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![Jakub Kicinski](/assets/img/avatar_default.png)
Switch net callers to the new API not requiring the NAPI_POLL_WEIGHT argument. Acked-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Alex Elder <elder@linaro.org> Acked-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Acked-by: Alexandra Winter <wintera@linux.ibm.com> Link: https://lore.kernel.org/r/20220504163725.550782-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
7229 lines
188 KiB
C
7229 lines
188 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright IBM Corp. 2007, 2009
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* Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
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* Frank Pavlic <fpavlic@de.ibm.com>,
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* Thomas Spatzier <tspat@de.ibm.com>,
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* Frank Blaschka <frank.blaschka@de.ibm.com>
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*/
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#define KMSG_COMPONENT "qeth"
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#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
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#include <linux/compat.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/log2.h>
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#include <linux/io.h>
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#include <linux/ip.h>
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#include <linux/tcp.h>
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#include <linux/mii.h>
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#include <linux/mm.h>
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#include <linux/kthread.h>
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#include <linux/slab.h>
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#include <linux/if_vlan.h>
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#include <linux/netdevice.h>
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#include <linux/netdev_features.h>
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#include <linux/rcutree.h>
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#include <linux/skbuff.h>
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#include <linux/vmalloc.h>
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#include <net/iucv/af_iucv.h>
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#include <net/dsfield.h>
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#include <net/sock.h>
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#include <asm/ebcdic.h>
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#include <asm/chpid.h>
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#include <asm/sysinfo.h>
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#include <asm/diag.h>
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#include <asm/cio.h>
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#include <asm/ccwdev.h>
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#include <asm/cpcmd.h>
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#include "qeth_core.h"
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struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
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/* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
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/* N P A M L V H */
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[QETH_DBF_SETUP] = {"qeth_setup",
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8, 1, 8, 5, &debug_hex_ascii_view, NULL},
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[QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
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&debug_sprintf_view, NULL},
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[QETH_DBF_CTRL] = {"qeth_control",
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8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
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};
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EXPORT_SYMBOL_GPL(qeth_dbf);
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static struct kmem_cache *qeth_core_header_cache;
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static struct kmem_cache *qeth_qdio_outbuf_cache;
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static struct kmem_cache *qeth_qaob_cache;
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static struct device *qeth_core_root_dev;
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static struct dentry *qeth_debugfs_root;
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static struct lock_class_key qdio_out_skb_queue_key;
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static void qeth_issue_next_read_cb(struct qeth_card *card,
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struct qeth_cmd_buffer *iob,
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unsigned int data_length);
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static int qeth_qdio_establish(struct qeth_card *);
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static void qeth_free_qdio_queues(struct qeth_card *card);
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static const char *qeth_get_cardname(struct qeth_card *card)
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{
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if (IS_VM_NIC(card)) {
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switch (card->info.type) {
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case QETH_CARD_TYPE_OSD:
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return " Virtual NIC QDIO";
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case QETH_CARD_TYPE_IQD:
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return " Virtual NIC Hiper";
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case QETH_CARD_TYPE_OSM:
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return " Virtual NIC QDIO - OSM";
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case QETH_CARD_TYPE_OSX:
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return " Virtual NIC QDIO - OSX";
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default:
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return " unknown";
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}
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} else {
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switch (card->info.type) {
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case QETH_CARD_TYPE_OSD:
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return " OSD Express";
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case QETH_CARD_TYPE_IQD:
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return " HiperSockets";
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case QETH_CARD_TYPE_OSM:
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return " OSM QDIO";
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case QETH_CARD_TYPE_OSX:
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return " OSX QDIO";
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default:
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return " unknown";
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}
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}
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return " n/a";
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}
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/* max length to be returned: 14 */
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const char *qeth_get_cardname_short(struct qeth_card *card)
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{
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if (IS_VM_NIC(card)) {
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switch (card->info.type) {
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case QETH_CARD_TYPE_OSD:
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return "Virt.NIC QDIO";
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case QETH_CARD_TYPE_IQD:
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return "Virt.NIC Hiper";
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case QETH_CARD_TYPE_OSM:
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return "Virt.NIC OSM";
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case QETH_CARD_TYPE_OSX:
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return "Virt.NIC OSX";
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default:
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return "unknown";
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}
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} else {
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switch (card->info.type) {
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case QETH_CARD_TYPE_OSD:
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switch (card->info.link_type) {
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case QETH_LINK_TYPE_FAST_ETH:
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return "OSD_100";
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case QETH_LINK_TYPE_HSTR:
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return "HSTR";
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case QETH_LINK_TYPE_GBIT_ETH:
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return "OSD_1000";
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case QETH_LINK_TYPE_10GBIT_ETH:
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return "OSD_10GIG";
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case QETH_LINK_TYPE_25GBIT_ETH:
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return "OSD_25GIG";
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case QETH_LINK_TYPE_LANE_ETH100:
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return "OSD_FE_LANE";
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case QETH_LINK_TYPE_LANE_TR:
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return "OSD_TR_LANE";
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case QETH_LINK_TYPE_LANE_ETH1000:
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return "OSD_GbE_LANE";
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case QETH_LINK_TYPE_LANE:
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return "OSD_ATM_LANE";
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default:
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return "OSD_Express";
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}
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case QETH_CARD_TYPE_IQD:
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return "HiperSockets";
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case QETH_CARD_TYPE_OSM:
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return "OSM_1000";
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case QETH_CARD_TYPE_OSX:
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return "OSX_10GIG";
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default:
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return "unknown";
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}
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}
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return "n/a";
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}
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void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
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int clear_start_mask)
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{
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unsigned long flags;
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spin_lock_irqsave(&card->thread_mask_lock, flags);
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card->thread_allowed_mask = threads;
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if (clear_start_mask)
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card->thread_start_mask &= threads;
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spin_unlock_irqrestore(&card->thread_mask_lock, flags);
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wake_up(&card->wait_q);
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}
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EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
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int qeth_threads_running(struct qeth_card *card, unsigned long threads)
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{
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unsigned long flags;
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int rc = 0;
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spin_lock_irqsave(&card->thread_mask_lock, flags);
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rc = (card->thread_running_mask & threads);
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spin_unlock_irqrestore(&card->thread_mask_lock, flags);
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return rc;
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}
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EXPORT_SYMBOL_GPL(qeth_threads_running);
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static void qeth_clear_working_pool_list(struct qeth_card *card)
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{
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struct qeth_buffer_pool_entry *pool_entry, *tmp;
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struct qeth_qdio_q *queue = card->qdio.in_q;
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unsigned int i;
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QETH_CARD_TEXT(card, 5, "clwrklst");
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list_for_each_entry_safe(pool_entry, tmp,
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&card->qdio.in_buf_pool.entry_list, list)
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list_del(&pool_entry->list);
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for (i = 0; i < ARRAY_SIZE(queue->bufs); i++)
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queue->bufs[i].pool_entry = NULL;
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}
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static void qeth_free_pool_entry(struct qeth_buffer_pool_entry *entry)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(entry->elements); i++) {
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if (entry->elements[i])
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__free_page(entry->elements[i]);
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}
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kfree(entry);
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}
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static void qeth_free_buffer_pool(struct qeth_card *card)
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{
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struct qeth_buffer_pool_entry *entry, *tmp;
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list_for_each_entry_safe(entry, tmp, &card->qdio.init_pool.entry_list,
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init_list) {
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list_del(&entry->init_list);
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qeth_free_pool_entry(entry);
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}
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}
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static struct qeth_buffer_pool_entry *qeth_alloc_pool_entry(unsigned int pages)
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{
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struct qeth_buffer_pool_entry *entry;
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unsigned int i;
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entry = kzalloc(sizeof(*entry), GFP_KERNEL);
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if (!entry)
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return NULL;
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for (i = 0; i < pages; i++) {
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entry->elements[i] = __dev_alloc_page(GFP_KERNEL);
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if (!entry->elements[i]) {
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qeth_free_pool_entry(entry);
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return NULL;
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}
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}
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return entry;
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}
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static int qeth_alloc_buffer_pool(struct qeth_card *card)
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{
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unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
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unsigned int i;
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QETH_CARD_TEXT(card, 5, "alocpool");
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for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
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struct qeth_buffer_pool_entry *entry;
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entry = qeth_alloc_pool_entry(buf_elements);
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if (!entry) {
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qeth_free_buffer_pool(card);
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return -ENOMEM;
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}
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list_add(&entry->init_list, &card->qdio.init_pool.entry_list);
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}
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return 0;
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}
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int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count)
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{
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unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
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struct qeth_qdio_buffer_pool *pool = &card->qdio.init_pool;
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struct qeth_buffer_pool_entry *entry, *tmp;
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int delta = count - pool->buf_count;
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LIST_HEAD(entries);
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QETH_CARD_TEXT(card, 2, "realcbp");
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/* Defer until pool is allocated: */
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if (list_empty(&pool->entry_list))
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goto out;
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/* Remove entries from the pool: */
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while (delta < 0) {
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entry = list_first_entry(&pool->entry_list,
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struct qeth_buffer_pool_entry,
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init_list);
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list_del(&entry->init_list);
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qeth_free_pool_entry(entry);
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delta++;
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}
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/* Allocate additional entries: */
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while (delta > 0) {
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entry = qeth_alloc_pool_entry(buf_elements);
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if (!entry) {
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list_for_each_entry_safe(entry, tmp, &entries,
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init_list) {
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list_del(&entry->init_list);
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qeth_free_pool_entry(entry);
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}
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return -ENOMEM;
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}
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list_add(&entry->init_list, &entries);
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delta--;
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}
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list_splice(&entries, &pool->entry_list);
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out:
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card->qdio.in_buf_pool.buf_count = count;
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pool->buf_count = count;
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return 0;
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}
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EXPORT_SYMBOL_GPL(qeth_resize_buffer_pool);
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static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
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{
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if (!q)
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return;
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qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
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kfree(q);
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}
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static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
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{
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struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
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int i;
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if (!q)
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return NULL;
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if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
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kfree(q);
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return NULL;
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}
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for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
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q->bufs[i].buffer = q->qdio_bufs[i];
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QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
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return q;
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}
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static int qeth_cq_init(struct qeth_card *card)
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{
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int rc;
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if (card->options.cq == QETH_CQ_ENABLED) {
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QETH_CARD_TEXT(card, 2, "cqinit");
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qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
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QDIO_MAX_BUFFERS_PER_Q);
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card->qdio.c_q->next_buf_to_init = 127;
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rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 1, 0, 127);
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if (rc) {
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QETH_CARD_TEXT_(card, 2, "1err%d", rc);
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goto out;
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}
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}
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rc = 0;
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out:
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return rc;
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}
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static int qeth_alloc_cq(struct qeth_card *card)
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{
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if (card->options.cq == QETH_CQ_ENABLED) {
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QETH_CARD_TEXT(card, 2, "cqon");
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card->qdio.c_q = qeth_alloc_qdio_queue();
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if (!card->qdio.c_q) {
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dev_err(&card->gdev->dev, "Failed to create completion queue\n");
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return -ENOMEM;
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}
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} else {
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QETH_CARD_TEXT(card, 2, "nocq");
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card->qdio.c_q = NULL;
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}
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return 0;
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}
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static void qeth_free_cq(struct qeth_card *card)
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{
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if (card->qdio.c_q) {
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qeth_free_qdio_queue(card->qdio.c_q);
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card->qdio.c_q = NULL;
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}
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}
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static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
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int delayed)
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{
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enum iucv_tx_notify n;
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switch (sbalf15) {
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case 0:
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n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
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break;
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case 4:
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case 16:
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case 17:
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case 18:
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n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
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TX_NOTIFY_UNREACHABLE;
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break;
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default:
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n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
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TX_NOTIFY_GENERALERROR;
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break;
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}
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return n;
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}
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static void qeth_put_cmd(struct qeth_cmd_buffer *iob)
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{
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if (refcount_dec_and_test(&iob->ref_count)) {
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kfree(iob->data);
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kfree(iob);
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}
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}
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static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
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void *data)
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{
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ccw->cmd_code = cmd_code;
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ccw->flags = flags | CCW_FLAG_SLI;
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ccw->count = len;
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ccw->cda = (__u32)virt_to_phys(data);
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}
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|
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static int __qeth_issue_next_read(struct qeth_card *card)
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{
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struct qeth_cmd_buffer *iob = card->read_cmd;
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struct qeth_channel *channel = iob->channel;
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struct ccw1 *ccw = __ccw_from_cmd(iob);
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int rc;
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QETH_CARD_TEXT(card, 5, "issnxrd");
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if (channel->state != CH_STATE_UP)
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return -EIO;
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memset(iob->data, 0, iob->length);
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qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
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iob->callback = qeth_issue_next_read_cb;
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/* keep the cmd alive after completion: */
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qeth_get_cmd(iob);
|
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|
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QETH_CARD_TEXT(card, 6, "noirqpnd");
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rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
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if (!rc) {
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channel->active_cmd = iob;
|
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} else {
|
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QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
|
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rc, CARD_DEVID(card));
|
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qeth_unlock_channel(card, channel);
|
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qeth_put_cmd(iob);
|
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card->read_or_write_problem = 1;
|
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qeth_schedule_recovery(card);
|
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}
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return rc;
|
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}
|
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|
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static int qeth_issue_next_read(struct qeth_card *card)
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{
|
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int ret;
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spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
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ret = __qeth_issue_next_read(card);
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spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
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|
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return ret;
|
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}
|
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|
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static void qeth_enqueue_cmd(struct qeth_card *card,
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struct qeth_cmd_buffer *iob)
|
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{
|
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spin_lock_irq(&card->lock);
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list_add_tail(&iob->list_entry, &card->cmd_waiter_list);
|
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spin_unlock_irq(&card->lock);
|
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}
|
|
|
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static void qeth_dequeue_cmd(struct qeth_card *card,
|
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struct qeth_cmd_buffer *iob)
|
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{
|
|
spin_lock_irq(&card->lock);
|
|
list_del(&iob->list_entry);
|
|
spin_unlock_irq(&card->lock);
|
|
}
|
|
|
|
static void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason)
|
|
{
|
|
iob->rc = reason;
|
|
complete(&iob->done);
|
|
}
|
|
|
|
static void qeth_flush_local_addrs4(struct qeth_card *card)
|
|
{
|
|
struct qeth_local_addr *addr;
|
|
struct hlist_node *tmp;
|
|
unsigned int i;
|
|
|
|
spin_lock_irq(&card->local_addrs4_lock);
|
|
hash_for_each_safe(card->local_addrs4, i, tmp, addr, hnode) {
|
|
hash_del_rcu(&addr->hnode);
|
|
kfree_rcu(addr, rcu);
|
|
}
|
|
spin_unlock_irq(&card->local_addrs4_lock);
|
|
}
|
|
|
|
static void qeth_flush_local_addrs6(struct qeth_card *card)
|
|
{
|
|
struct qeth_local_addr *addr;
|
|
struct hlist_node *tmp;
|
|
unsigned int i;
|
|
|
|
spin_lock_irq(&card->local_addrs6_lock);
|
|
hash_for_each_safe(card->local_addrs6, i, tmp, addr, hnode) {
|
|
hash_del_rcu(&addr->hnode);
|
|
kfree_rcu(addr, rcu);
|
|
}
|
|
spin_unlock_irq(&card->local_addrs6_lock);
|
|
}
|
|
|
|
static void qeth_flush_local_addrs(struct qeth_card *card)
|
|
{
|
|
qeth_flush_local_addrs4(card);
|
|
qeth_flush_local_addrs6(card);
|
|
}
|
|
|
|
static void qeth_add_local_addrs4(struct qeth_card *card,
|
|
struct qeth_ipacmd_local_addrs4 *cmd)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (cmd->addr_length !=
|
|
sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
|
|
dev_err_ratelimited(&card->gdev->dev,
|
|
"Dropped IPv4 ADD LOCAL ADDR event with bad length %u\n",
|
|
cmd->addr_length);
|
|
return;
|
|
}
|
|
|
|
spin_lock(&card->local_addrs4_lock);
|
|
for (i = 0; i < cmd->count; i++) {
|
|
unsigned int key = ipv4_addr_hash(cmd->addrs[i].addr);
|
|
struct qeth_local_addr *addr;
|
|
bool duplicate = false;
|
|
|
|
hash_for_each_possible(card->local_addrs4, addr, hnode, key) {
|
|
if (addr->addr.s6_addr32[3] == cmd->addrs[i].addr) {
|
|
duplicate = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (duplicate)
|
|
continue;
|
|
|
|
addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
|
|
if (!addr) {
|
|
dev_err(&card->gdev->dev,
|
|
"Failed to allocate local addr object. Traffic to %pI4 might suffer.\n",
|
|
&cmd->addrs[i].addr);
|
|
continue;
|
|
}
|
|
|
|
ipv6_addr_set(&addr->addr, 0, 0, 0, cmd->addrs[i].addr);
|
|
hash_add_rcu(card->local_addrs4, &addr->hnode, key);
|
|
}
|
|
spin_unlock(&card->local_addrs4_lock);
|
|
}
|
|
|
|
static void qeth_add_local_addrs6(struct qeth_card *card,
|
|
struct qeth_ipacmd_local_addrs6 *cmd)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (cmd->addr_length !=
|
|
sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
|
|
dev_err_ratelimited(&card->gdev->dev,
|
|
"Dropped IPv6 ADD LOCAL ADDR event with bad length %u\n",
|
|
cmd->addr_length);
|
|
return;
|
|
}
|
|
|
|
spin_lock(&card->local_addrs6_lock);
|
|
for (i = 0; i < cmd->count; i++) {
|
|
u32 key = ipv6_addr_hash(&cmd->addrs[i].addr);
|
|
struct qeth_local_addr *addr;
|
|
bool duplicate = false;
|
|
|
|
hash_for_each_possible(card->local_addrs6, addr, hnode, key) {
|
|
if (ipv6_addr_equal(&addr->addr, &cmd->addrs[i].addr)) {
|
|
duplicate = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (duplicate)
|
|
continue;
|
|
|
|
addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
|
|
if (!addr) {
|
|
dev_err(&card->gdev->dev,
|
|
"Failed to allocate local addr object. Traffic to %pI6c might suffer.\n",
|
|
&cmd->addrs[i].addr);
|
|
continue;
|
|
}
|
|
|
|
addr->addr = cmd->addrs[i].addr;
|
|
hash_add_rcu(card->local_addrs6, &addr->hnode, key);
|
|
}
|
|
spin_unlock(&card->local_addrs6_lock);
|
|
}
|
|
|
|
static void qeth_del_local_addrs4(struct qeth_card *card,
|
|
struct qeth_ipacmd_local_addrs4 *cmd)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (cmd->addr_length !=
|
|
sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
|
|
dev_err_ratelimited(&card->gdev->dev,
|
|
"Dropped IPv4 DEL LOCAL ADDR event with bad length %u\n",
|
|
cmd->addr_length);
|
|
return;
|
|
}
|
|
|
|
spin_lock(&card->local_addrs4_lock);
|
|
for (i = 0; i < cmd->count; i++) {
|
|
struct qeth_ipacmd_local_addr4 *addr = &cmd->addrs[i];
|
|
unsigned int key = ipv4_addr_hash(addr->addr);
|
|
struct qeth_local_addr *tmp;
|
|
|
|
hash_for_each_possible(card->local_addrs4, tmp, hnode, key) {
|
|
if (tmp->addr.s6_addr32[3] == addr->addr) {
|
|
hash_del_rcu(&tmp->hnode);
|
|
kfree_rcu(tmp, rcu);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
spin_unlock(&card->local_addrs4_lock);
|
|
}
|
|
|
|
static void qeth_del_local_addrs6(struct qeth_card *card,
|
|
struct qeth_ipacmd_local_addrs6 *cmd)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (cmd->addr_length !=
|
|
sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
|
|
dev_err_ratelimited(&card->gdev->dev,
|
|
"Dropped IPv6 DEL LOCAL ADDR event with bad length %u\n",
|
|
cmd->addr_length);
|
|
return;
|
|
}
|
|
|
|
spin_lock(&card->local_addrs6_lock);
|
|
for (i = 0; i < cmd->count; i++) {
|
|
struct qeth_ipacmd_local_addr6 *addr = &cmd->addrs[i];
|
|
u32 key = ipv6_addr_hash(&addr->addr);
|
|
struct qeth_local_addr *tmp;
|
|
|
|
hash_for_each_possible(card->local_addrs6, tmp, hnode, key) {
|
|
if (ipv6_addr_equal(&tmp->addr, &addr->addr)) {
|
|
hash_del_rcu(&tmp->hnode);
|
|
kfree_rcu(tmp, rcu);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
spin_unlock(&card->local_addrs6_lock);
|
|
}
|
|
|
|
static bool qeth_next_hop_is_local_v4(struct qeth_card *card,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct qeth_local_addr *tmp;
|
|
bool is_local = false;
|
|
unsigned int key;
|
|
__be32 next_hop;
|
|
|
|
if (hash_empty(card->local_addrs4))
|
|
return false;
|
|
|
|
rcu_read_lock();
|
|
next_hop = qeth_next_hop_v4_rcu(skb,
|
|
qeth_dst_check_rcu(skb, htons(ETH_P_IP)));
|
|
key = ipv4_addr_hash(next_hop);
|
|
|
|
hash_for_each_possible_rcu(card->local_addrs4, tmp, hnode, key) {
|
|
if (tmp->addr.s6_addr32[3] == next_hop) {
|
|
is_local = true;
|
|
break;
|
|
}
|
|
}
|
|
rcu_read_unlock();
|
|
|
|
return is_local;
|
|
}
|
|
|
|
static bool qeth_next_hop_is_local_v6(struct qeth_card *card,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct qeth_local_addr *tmp;
|
|
struct in6_addr *next_hop;
|
|
bool is_local = false;
|
|
u32 key;
|
|
|
|
if (hash_empty(card->local_addrs6))
|
|
return false;
|
|
|
|
rcu_read_lock();
|
|
next_hop = qeth_next_hop_v6_rcu(skb,
|
|
qeth_dst_check_rcu(skb, htons(ETH_P_IPV6)));
|
|
key = ipv6_addr_hash(next_hop);
|
|
|
|
hash_for_each_possible_rcu(card->local_addrs6, tmp, hnode, key) {
|
|
if (ipv6_addr_equal(&tmp->addr, next_hop)) {
|
|
is_local = true;
|
|
break;
|
|
}
|
|
}
|
|
rcu_read_unlock();
|
|
|
|
return is_local;
|
|
}
|
|
|
|
static int qeth_debugfs_local_addr_show(struct seq_file *m, void *v)
|
|
{
|
|
struct qeth_card *card = m->private;
|
|
struct qeth_local_addr *tmp;
|
|
unsigned int i;
|
|
|
|
rcu_read_lock();
|
|
hash_for_each_rcu(card->local_addrs4, i, tmp, hnode)
|
|
seq_printf(m, "%pI4\n", &tmp->addr.s6_addr32[3]);
|
|
hash_for_each_rcu(card->local_addrs6, i, tmp, hnode)
|
|
seq_printf(m, "%pI6c\n", &tmp->addr);
|
|
rcu_read_unlock();
|
|
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_SHOW_ATTRIBUTE(qeth_debugfs_local_addr);
|
|
|
|
static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
|
|
struct qeth_card *card)
|
|
{
|
|
const char *ipa_name;
|
|
int com = cmd->hdr.command;
|
|
|
|
ipa_name = qeth_get_ipa_cmd_name(com);
|
|
|
|
if (rc)
|
|
QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
|
|
ipa_name, com, CARD_DEVID(card), rc,
|
|
qeth_get_ipa_msg(rc));
|
|
else
|
|
QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
|
|
ipa_name, com, CARD_DEVID(card));
|
|
}
|
|
|
|
static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
|
|
struct qeth_ipa_cmd *cmd)
|
|
{
|
|
QETH_CARD_TEXT(card, 5, "chkipad");
|
|
|
|
if (IS_IPA_REPLY(cmd)) {
|
|
if (cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
|
|
qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
|
|
return cmd;
|
|
}
|
|
|
|
/* handle unsolicited event: */
|
|
switch (cmd->hdr.command) {
|
|
case IPA_CMD_STOPLAN:
|
|
if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
|
|
dev_err(&card->gdev->dev,
|
|
"Adjacent port of interface %s is no longer in reflective relay mode, trigger recovery\n",
|
|
netdev_name(card->dev));
|
|
/* Set offline, then probably fail to set online: */
|
|
qeth_schedule_recovery(card);
|
|
} else {
|
|
/* stay online for subsequent STARTLAN */
|
|
dev_warn(&card->gdev->dev,
|
|
"The link for interface %s on CHPID 0x%X failed\n",
|
|
netdev_name(card->dev), card->info.chpid);
|
|
qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
|
|
netif_carrier_off(card->dev);
|
|
}
|
|
return NULL;
|
|
case IPA_CMD_STARTLAN:
|
|
dev_info(&card->gdev->dev,
|
|
"The link for %s on CHPID 0x%X has been restored\n",
|
|
netdev_name(card->dev), card->info.chpid);
|
|
if (card->info.hwtrap)
|
|
card->info.hwtrap = 2;
|
|
qeth_schedule_recovery(card);
|
|
return NULL;
|
|
case IPA_CMD_SETBRIDGEPORT_IQD:
|
|
case IPA_CMD_SETBRIDGEPORT_OSA:
|
|
case IPA_CMD_ADDRESS_CHANGE_NOTIF:
|
|
if (card->discipline->control_event_handler(card, cmd))
|
|
return cmd;
|
|
return NULL;
|
|
case IPA_CMD_REGISTER_LOCAL_ADDR:
|
|
if (cmd->hdr.prot_version == QETH_PROT_IPV4)
|
|
qeth_add_local_addrs4(card, &cmd->data.local_addrs4);
|
|
else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
|
|
qeth_add_local_addrs6(card, &cmd->data.local_addrs6);
|
|
|
|
QETH_CARD_TEXT(card, 3, "irla");
|
|
return NULL;
|
|
case IPA_CMD_UNREGISTER_LOCAL_ADDR:
|
|
if (cmd->hdr.prot_version == QETH_PROT_IPV4)
|
|
qeth_del_local_addrs4(card, &cmd->data.local_addrs4);
|
|
else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
|
|
qeth_del_local_addrs6(card, &cmd->data.local_addrs6);
|
|
|
|
QETH_CARD_TEXT(card, 3, "urla");
|
|
return NULL;
|
|
default:
|
|
QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
|
|
return cmd;
|
|
}
|
|
}
|
|
|
|
static void qeth_clear_ipacmd_list(struct qeth_card *card)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
unsigned long flags;
|
|
|
|
QETH_CARD_TEXT(card, 4, "clipalst");
|
|
|
|
spin_lock_irqsave(&card->lock, flags);
|
|
list_for_each_entry(iob, &card->cmd_waiter_list, list_entry)
|
|
qeth_notify_cmd(iob, -ECANCELED);
|
|
spin_unlock_irqrestore(&card->lock, flags);
|
|
}
|
|
|
|
static int qeth_check_idx_response(struct qeth_card *card,
|
|
unsigned char *buffer)
|
|
{
|
|
QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
|
|
if ((buffer[2] & QETH_IDX_TERMINATE_MASK) == QETH_IDX_TERMINATE) {
|
|
QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
|
|
buffer[4]);
|
|
QETH_CARD_TEXT(card, 2, "ckidxres");
|
|
QETH_CARD_TEXT(card, 2, " idxterm");
|
|
QETH_CARD_TEXT_(card, 2, "rc%x", buffer[4]);
|
|
if (buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT ||
|
|
buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT_VM) {
|
|
dev_err(&card->gdev->dev,
|
|
"The device does not support the configured transport mode\n");
|
|
return -EPROTONOSUPPORT;
|
|
}
|
|
return -EIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void qeth_release_buffer_cb(struct qeth_card *card,
|
|
struct qeth_cmd_buffer *iob,
|
|
unsigned int data_length)
|
|
{
|
|
qeth_put_cmd(iob);
|
|
}
|
|
|
|
static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
|
|
{
|
|
qeth_notify_cmd(iob, rc);
|
|
qeth_put_cmd(iob);
|
|
}
|
|
|
|
static struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
|
|
unsigned int length,
|
|
unsigned int ccws, long timeout)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
if (length > QETH_BUFSIZE)
|
|
return NULL;
|
|
|
|
iob = kzalloc(sizeof(*iob), GFP_KERNEL);
|
|
if (!iob)
|
|
return NULL;
|
|
|
|
iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
|
|
GFP_KERNEL | GFP_DMA);
|
|
if (!iob->data) {
|
|
kfree(iob);
|
|
return NULL;
|
|
}
|
|
|
|
init_completion(&iob->done);
|
|
spin_lock_init(&iob->lock);
|
|
refcount_set(&iob->ref_count, 1);
|
|
iob->channel = channel;
|
|
iob->timeout = timeout;
|
|
iob->length = length;
|
|
return iob;
|
|
}
|
|
|
|
static void qeth_issue_next_read_cb(struct qeth_card *card,
|
|
struct qeth_cmd_buffer *iob,
|
|
unsigned int data_length)
|
|
{
|
|
struct qeth_cmd_buffer *request = NULL;
|
|
struct qeth_ipa_cmd *cmd = NULL;
|
|
struct qeth_reply *reply = NULL;
|
|
struct qeth_cmd_buffer *tmp;
|
|
unsigned long flags;
|
|
int rc = 0;
|
|
|
|
QETH_CARD_TEXT(card, 4, "sndctlcb");
|
|
rc = qeth_check_idx_response(card, iob->data);
|
|
switch (rc) {
|
|
case 0:
|
|
break;
|
|
case -EIO:
|
|
qeth_schedule_recovery(card);
|
|
fallthrough;
|
|
default:
|
|
qeth_clear_ipacmd_list(card);
|
|
goto err_idx;
|
|
}
|
|
|
|
cmd = __ipa_reply(iob);
|
|
if (cmd) {
|
|
cmd = qeth_check_ipa_data(card, cmd);
|
|
if (!cmd)
|
|
goto out;
|
|
}
|
|
|
|
/* match against pending cmd requests */
|
|
spin_lock_irqsave(&card->lock, flags);
|
|
list_for_each_entry(tmp, &card->cmd_waiter_list, list_entry) {
|
|
if (tmp->match && tmp->match(tmp, iob)) {
|
|
request = tmp;
|
|
/* take the object outside the lock */
|
|
qeth_get_cmd(request);
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&card->lock, flags);
|
|
|
|
if (!request)
|
|
goto out;
|
|
|
|
reply = &request->reply;
|
|
if (!reply->callback) {
|
|
rc = 0;
|
|
goto no_callback;
|
|
}
|
|
|
|
spin_lock_irqsave(&request->lock, flags);
|
|
if (request->rc)
|
|
/* Bail out when the requestor has already left: */
|
|
rc = request->rc;
|
|
else
|
|
rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
|
|
(unsigned long)iob);
|
|
spin_unlock_irqrestore(&request->lock, flags);
|
|
|
|
no_callback:
|
|
if (rc <= 0)
|
|
qeth_notify_cmd(request, rc);
|
|
qeth_put_cmd(request);
|
|
out:
|
|
memcpy(&card->seqno.pdu_hdr_ack,
|
|
QETH_PDU_HEADER_SEQ_NO(iob->data),
|
|
QETH_SEQ_NO_LENGTH);
|
|
__qeth_issue_next_read(card);
|
|
err_idx:
|
|
qeth_put_cmd(iob);
|
|
}
|
|
|
|
static int qeth_set_thread_start_bit(struct qeth_card *card,
|
|
unsigned long thread)
|
|
{
|
|
unsigned long flags;
|
|
int rc = 0;
|
|
|
|
spin_lock_irqsave(&card->thread_mask_lock, flags);
|
|
if (!(card->thread_allowed_mask & thread))
|
|
rc = -EPERM;
|
|
else if (card->thread_start_mask & thread)
|
|
rc = -EBUSY;
|
|
else
|
|
card->thread_start_mask |= thread;
|
|
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void qeth_clear_thread_start_bit(struct qeth_card *card,
|
|
unsigned long thread)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&card->thread_mask_lock, flags);
|
|
card->thread_start_mask &= ~thread;
|
|
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
|
|
wake_up(&card->wait_q);
|
|
}
|
|
|
|
static void qeth_clear_thread_running_bit(struct qeth_card *card,
|
|
unsigned long thread)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&card->thread_mask_lock, flags);
|
|
card->thread_running_mask &= ~thread;
|
|
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
|
|
wake_up_all(&card->wait_q);
|
|
}
|
|
|
|
static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
|
|
{
|
|
unsigned long flags;
|
|
int rc = 0;
|
|
|
|
spin_lock_irqsave(&card->thread_mask_lock, flags);
|
|
if (card->thread_start_mask & thread) {
|
|
if ((card->thread_allowed_mask & thread) &&
|
|
!(card->thread_running_mask & thread)) {
|
|
rc = 1;
|
|
card->thread_start_mask &= ~thread;
|
|
card->thread_running_mask |= thread;
|
|
} else
|
|
rc = -EPERM;
|
|
}
|
|
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
|
|
{
|
|
int rc = 0;
|
|
|
|
wait_event(card->wait_q,
|
|
(rc = __qeth_do_run_thread(card, thread)) >= 0);
|
|
return rc;
|
|
}
|
|
|
|
int qeth_schedule_recovery(struct qeth_card *card)
|
|
{
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 2, "startrec");
|
|
|
|
rc = qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD);
|
|
if (!rc)
|
|
schedule_work(&card->kernel_thread_starter);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
|
|
struct irb *irb)
|
|
{
|
|
int dstat, cstat;
|
|
char *sense;
|
|
|
|
sense = (char *) irb->ecw;
|
|
cstat = irb->scsw.cmd.cstat;
|
|
dstat = irb->scsw.cmd.dstat;
|
|
|
|
if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
|
|
SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
|
|
SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
|
|
QETH_CARD_TEXT(card, 2, "CGENCHK");
|
|
dev_warn(&cdev->dev, "The qeth device driver "
|
|
"failed to recover an error on the device\n");
|
|
QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
|
|
CCW_DEVID(cdev), dstat, cstat);
|
|
print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
|
|
16, 1, irb, 64, 1);
|
|
return -EIO;
|
|
}
|
|
|
|
if (dstat & DEV_STAT_UNIT_CHECK) {
|
|
if (sense[SENSE_RESETTING_EVENT_BYTE] &
|
|
SENSE_RESETTING_EVENT_FLAG) {
|
|
QETH_CARD_TEXT(card, 2, "REVIND");
|
|
return -EIO;
|
|
}
|
|
if (sense[SENSE_COMMAND_REJECT_BYTE] &
|
|
SENSE_COMMAND_REJECT_FLAG) {
|
|
QETH_CARD_TEXT(card, 2, "CMDREJi");
|
|
return -EIO;
|
|
}
|
|
if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
|
|
QETH_CARD_TEXT(card, 2, "AFFE");
|
|
return -EIO;
|
|
}
|
|
if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
|
|
QETH_CARD_TEXT(card, 2, "ZEROSEN");
|
|
return 0;
|
|
}
|
|
QETH_CARD_TEXT(card, 2, "DGENCHK");
|
|
return -EIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
|
|
struct irb *irb)
|
|
{
|
|
if (!IS_ERR(irb))
|
|
return 0;
|
|
|
|
switch (PTR_ERR(irb)) {
|
|
case -EIO:
|
|
QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
|
|
CCW_DEVID(cdev));
|
|
QETH_CARD_TEXT(card, 2, "ckirberr");
|
|
QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
|
|
return -EIO;
|
|
case -ETIMEDOUT:
|
|
dev_warn(&cdev->dev, "A hardware operation timed out"
|
|
" on the device\n");
|
|
QETH_CARD_TEXT(card, 2, "ckirberr");
|
|
QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
|
|
return -ETIMEDOUT;
|
|
default:
|
|
QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
|
|
PTR_ERR(irb), CCW_DEVID(cdev));
|
|
QETH_CARD_TEXT(card, 2, "ckirberr");
|
|
QETH_CARD_TEXT(card, 2, " rc???");
|
|
return PTR_ERR(irb);
|
|
}
|
|
}
|
|
|
|
static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
|
|
struct irb *irb)
|
|
{
|
|
int rc;
|
|
int cstat, dstat;
|
|
struct qeth_cmd_buffer *iob = NULL;
|
|
struct ccwgroup_device *gdev;
|
|
struct qeth_channel *channel;
|
|
struct qeth_card *card;
|
|
|
|
/* while we hold the ccwdev lock, this stays valid: */
|
|
gdev = dev_get_drvdata(&cdev->dev);
|
|
card = dev_get_drvdata(&gdev->dev);
|
|
|
|
QETH_CARD_TEXT(card, 5, "irq");
|
|
|
|
if (card->read.ccwdev == cdev) {
|
|
channel = &card->read;
|
|
QETH_CARD_TEXT(card, 5, "read");
|
|
} else if (card->write.ccwdev == cdev) {
|
|
channel = &card->write;
|
|
QETH_CARD_TEXT(card, 5, "write");
|
|
} else {
|
|
channel = &card->data;
|
|
QETH_CARD_TEXT(card, 5, "data");
|
|
}
|
|
|
|
if (intparm == 0) {
|
|
QETH_CARD_TEXT(card, 5, "irqunsol");
|
|
} else if ((addr_t)intparm != (addr_t)channel->active_cmd) {
|
|
QETH_CARD_TEXT(card, 5, "irqunexp");
|
|
|
|
dev_err(&cdev->dev,
|
|
"Received IRQ with intparm %lx, expected %px\n",
|
|
intparm, channel->active_cmd);
|
|
if (channel->active_cmd)
|
|
qeth_cancel_cmd(channel->active_cmd, -EIO);
|
|
} else {
|
|
iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
|
|
}
|
|
|
|
qeth_unlock_channel(card, channel);
|
|
|
|
rc = qeth_check_irb_error(card, cdev, irb);
|
|
if (rc) {
|
|
/* IO was terminated, free its resources. */
|
|
if (iob)
|
|
qeth_cancel_cmd(iob, rc);
|
|
return;
|
|
}
|
|
|
|
if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) {
|
|
channel->state = CH_STATE_STOPPED;
|
|
wake_up(&card->wait_q);
|
|
}
|
|
|
|
if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
|
|
channel->state = CH_STATE_HALTED;
|
|
wake_up(&card->wait_q);
|
|
}
|
|
|
|
if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC |
|
|
SCSW_FCTL_HALT_FUNC))) {
|
|
qeth_cancel_cmd(iob, -ECANCELED);
|
|
iob = NULL;
|
|
}
|
|
|
|
cstat = irb->scsw.cmd.cstat;
|
|
dstat = irb->scsw.cmd.dstat;
|
|
|
|
if ((dstat & DEV_STAT_UNIT_EXCEP) ||
|
|
(dstat & DEV_STAT_UNIT_CHECK) ||
|
|
(cstat)) {
|
|
if (irb->esw.esw0.erw.cons) {
|
|
dev_warn(&channel->ccwdev->dev,
|
|
"The qeth device driver failed to recover "
|
|
"an error on the device\n");
|
|
QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
|
|
CCW_DEVID(channel->ccwdev), cstat,
|
|
dstat);
|
|
print_hex_dump(KERN_WARNING, "qeth: irb ",
|
|
DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
|
|
print_hex_dump(KERN_WARNING, "qeth: sense data ",
|
|
DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
|
|
}
|
|
|
|
rc = qeth_get_problem(card, cdev, irb);
|
|
if (rc) {
|
|
card->read_or_write_problem = 1;
|
|
if (iob)
|
|
qeth_cancel_cmd(iob, rc);
|
|
qeth_clear_ipacmd_list(card);
|
|
qeth_schedule_recovery(card);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (iob) {
|
|
/* sanity check: */
|
|
if (irb->scsw.cmd.count > iob->length) {
|
|
qeth_cancel_cmd(iob, -EIO);
|
|
return;
|
|
}
|
|
if (iob->callback)
|
|
iob->callback(card, iob,
|
|
iob->length - irb->scsw.cmd.count);
|
|
}
|
|
}
|
|
|
|
static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
|
|
struct qeth_qdio_out_buffer *buf,
|
|
enum iucv_tx_notify notification)
|
|
{
|
|
struct sk_buff *skb;
|
|
|
|
skb_queue_walk(&buf->skb_list, skb) {
|
|
struct sock *sk = skb->sk;
|
|
|
|
QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
|
|
QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
|
|
if (sk && sk->sk_family == PF_IUCV)
|
|
iucv_sk(sk)->sk_txnotify(sk, notification);
|
|
}
|
|
}
|
|
|
|
static void qeth_tx_complete_buf(struct qeth_qdio_out_q *queue,
|
|
struct qeth_qdio_out_buffer *buf, bool error,
|
|
int budget)
|
|
{
|
|
struct sk_buff *skb;
|
|
|
|
/* Empty buffer? */
|
|
if (buf->next_element_to_fill == 0)
|
|
return;
|
|
|
|
QETH_TXQ_STAT_INC(queue, bufs);
|
|
QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
|
|
if (error) {
|
|
QETH_TXQ_STAT_ADD(queue, tx_errors, buf->frames);
|
|
} else {
|
|
QETH_TXQ_STAT_ADD(queue, tx_packets, buf->frames);
|
|
QETH_TXQ_STAT_ADD(queue, tx_bytes, buf->bytes);
|
|
}
|
|
|
|
while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
|
|
unsigned int bytes = qdisc_pkt_len(skb);
|
|
bool is_tso = skb_is_gso(skb);
|
|
unsigned int packets;
|
|
|
|
packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
|
|
if (!error) {
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL)
|
|
QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
|
|
if (skb_is_nonlinear(skb))
|
|
QETH_TXQ_STAT_INC(queue, skbs_sg);
|
|
if (is_tso) {
|
|
QETH_TXQ_STAT_INC(queue, skbs_tso);
|
|
QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
|
|
}
|
|
}
|
|
|
|
napi_consume_skb(skb, budget);
|
|
}
|
|
}
|
|
|
|
static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
|
|
struct qeth_qdio_out_buffer *buf,
|
|
bool error, int budget)
|
|
{
|
|
int i;
|
|
|
|
/* is PCI flag set on buffer? */
|
|
if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) {
|
|
atomic_dec(&queue->set_pci_flags_count);
|
|
QETH_TXQ_STAT_INC(queue, completion_irq);
|
|
}
|
|
|
|
qeth_tx_complete_buf(queue, buf, error, budget);
|
|
|
|
for (i = 0; i < queue->max_elements; ++i) {
|
|
void *data = phys_to_virt(buf->buffer->element[i].addr);
|
|
|
|
if (__test_and_clear_bit(i, buf->from_kmem_cache) && data)
|
|
kmem_cache_free(qeth_core_header_cache, data);
|
|
}
|
|
|
|
qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
|
|
buf->next_element_to_fill = 0;
|
|
buf->frames = 0;
|
|
buf->bytes = 0;
|
|
atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
|
|
}
|
|
|
|
static void qeth_free_out_buf(struct qeth_qdio_out_buffer *buf)
|
|
{
|
|
if (buf->aob)
|
|
kmem_cache_free(qeth_qaob_cache, buf->aob);
|
|
kmem_cache_free(qeth_qdio_outbuf_cache, buf);
|
|
}
|
|
|
|
static void qeth_tx_complete_pending_bufs(struct qeth_card *card,
|
|
struct qeth_qdio_out_q *queue,
|
|
bool drain, int budget)
|
|
{
|
|
struct qeth_qdio_out_buffer *buf, *tmp;
|
|
|
|
list_for_each_entry_safe(buf, tmp, &queue->pending_bufs, list_entry) {
|
|
struct qeth_qaob_priv1 *priv;
|
|
struct qaob *aob = buf->aob;
|
|
enum iucv_tx_notify notify;
|
|
unsigned int i;
|
|
|
|
priv = (struct qeth_qaob_priv1 *)&aob->user1;
|
|
if (drain || READ_ONCE(priv->state) == QETH_QAOB_DONE) {
|
|
QETH_CARD_TEXT(card, 5, "fp");
|
|
QETH_CARD_TEXT_(card, 5, "%lx", (long) buf);
|
|
|
|
notify = drain ? TX_NOTIFY_GENERALERROR :
|
|
qeth_compute_cq_notification(aob->aorc, 1);
|
|
qeth_notify_skbs(queue, buf, notify);
|
|
qeth_tx_complete_buf(queue, buf, drain, budget);
|
|
|
|
for (i = 0;
|
|
i < aob->sb_count && i < queue->max_elements;
|
|
i++) {
|
|
void *data = phys_to_virt(aob->sba[i]);
|
|
|
|
if (test_bit(i, buf->from_kmem_cache) && data)
|
|
kmem_cache_free(qeth_core_header_cache,
|
|
data);
|
|
}
|
|
|
|
list_del(&buf->list_entry);
|
|
qeth_free_out_buf(buf);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
|
|
{
|
|
int j;
|
|
|
|
qeth_tx_complete_pending_bufs(q->card, q, true, 0);
|
|
|
|
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
|
|
if (!q->bufs[j])
|
|
continue;
|
|
|
|
qeth_clear_output_buffer(q, q->bufs[j], true, 0);
|
|
if (free) {
|
|
qeth_free_out_buf(q->bufs[j]);
|
|
q->bufs[j] = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void qeth_drain_output_queues(struct qeth_card *card)
|
|
{
|
|
int i;
|
|
|
|
QETH_CARD_TEXT(card, 2, "clearqdbf");
|
|
/* clear outbound buffers to free skbs */
|
|
for (i = 0; i < card->qdio.no_out_queues; ++i) {
|
|
if (card->qdio.out_qs[i])
|
|
qeth_drain_output_queue(card->qdio.out_qs[i], false);
|
|
}
|
|
}
|
|
|
|
static void qeth_osa_set_output_queues(struct qeth_card *card, bool single)
|
|
{
|
|
unsigned int max = single ? 1 : card->dev->num_tx_queues;
|
|
|
|
if (card->qdio.no_out_queues == max)
|
|
return;
|
|
|
|
if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
|
|
qeth_free_qdio_queues(card);
|
|
|
|
if (max == 1 && card->qdio.do_prio_queueing != QETH_PRIOQ_DEFAULT)
|
|
dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
|
|
|
|
card->qdio.no_out_queues = max;
|
|
}
|
|
|
|
static int qeth_update_from_chp_desc(struct qeth_card *card)
|
|
{
|
|
struct ccw_device *ccwdev;
|
|
struct channel_path_desc_fmt0 *chp_dsc;
|
|
|
|
QETH_CARD_TEXT(card, 2, "chp_desc");
|
|
|
|
ccwdev = card->data.ccwdev;
|
|
chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
|
|
if (!chp_dsc)
|
|
return -ENOMEM;
|
|
|
|
card->info.func_level = 0x4100 + chp_dsc->desc;
|
|
|
|
if (IS_OSD(card) || IS_OSX(card))
|
|
/* CHPP field bit 6 == 1 -> single queue */
|
|
qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
|
|
|
|
kfree(chp_dsc);
|
|
QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
|
|
QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
|
|
return 0;
|
|
}
|
|
|
|
static void qeth_init_qdio_info(struct qeth_card *card)
|
|
{
|
|
QETH_CARD_TEXT(card, 4, "intqdinf");
|
|
atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
|
|
card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
|
|
card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
|
|
|
|
/* inbound */
|
|
card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
|
|
if (IS_IQD(card))
|
|
card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
|
|
else
|
|
card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
|
|
card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
|
|
INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
|
|
INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
|
|
}
|
|
|
|
static void qeth_set_initial_options(struct qeth_card *card)
|
|
{
|
|
card->options.route4.type = NO_ROUTER;
|
|
card->options.route6.type = NO_ROUTER;
|
|
card->options.isolation = ISOLATION_MODE_NONE;
|
|
card->options.cq = QETH_CQ_DISABLED;
|
|
card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
|
|
}
|
|
|
|
static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
|
|
{
|
|
unsigned long flags;
|
|
int rc = 0;
|
|
|
|
spin_lock_irqsave(&card->thread_mask_lock, flags);
|
|
QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
|
|
(u8) card->thread_start_mask,
|
|
(u8) card->thread_allowed_mask,
|
|
(u8) card->thread_running_mask);
|
|
rc = (card->thread_start_mask & thread);
|
|
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_do_reset(void *data);
|
|
static void qeth_start_kernel_thread(struct work_struct *work)
|
|
{
|
|
struct task_struct *ts;
|
|
struct qeth_card *card = container_of(work, struct qeth_card,
|
|
kernel_thread_starter);
|
|
QETH_CARD_TEXT(card, 2, "strthrd");
|
|
|
|
if (card->read.state != CH_STATE_UP &&
|
|
card->write.state != CH_STATE_UP)
|
|
return;
|
|
if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
|
|
ts = kthread_run(qeth_do_reset, card, "qeth_recover");
|
|
if (IS_ERR(ts)) {
|
|
qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
|
|
qeth_clear_thread_running_bit(card,
|
|
QETH_RECOVER_THREAD);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void qeth_buffer_reclaim_work(struct work_struct *);
|
|
static void qeth_setup_card(struct qeth_card *card)
|
|
{
|
|
QETH_CARD_TEXT(card, 2, "setupcrd");
|
|
|
|
card->info.type = CARD_RDEV(card)->id.driver_info;
|
|
card->state = CARD_STATE_DOWN;
|
|
spin_lock_init(&card->lock);
|
|
spin_lock_init(&card->thread_mask_lock);
|
|
mutex_init(&card->conf_mutex);
|
|
mutex_init(&card->discipline_mutex);
|
|
INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
|
|
INIT_LIST_HEAD(&card->cmd_waiter_list);
|
|
init_waitqueue_head(&card->wait_q);
|
|
qeth_set_initial_options(card);
|
|
/* IP address takeover */
|
|
INIT_LIST_HEAD(&card->ipato.entries);
|
|
qeth_init_qdio_info(card);
|
|
INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
|
|
hash_init(card->rx_mode_addrs);
|
|
hash_init(card->local_addrs4);
|
|
hash_init(card->local_addrs6);
|
|
spin_lock_init(&card->local_addrs4_lock);
|
|
spin_lock_init(&card->local_addrs6_lock);
|
|
}
|
|
|
|
static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
|
|
{
|
|
struct qeth_card *card = container_of(slr, struct qeth_card,
|
|
qeth_service_level);
|
|
if (card->info.mcl_level[0])
|
|
seq_printf(m, "qeth: %s firmware level %s\n",
|
|
CARD_BUS_ID(card), card->info.mcl_level);
|
|
}
|
|
|
|
static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
|
|
{
|
|
struct qeth_card *card;
|
|
|
|
QETH_DBF_TEXT(SETUP, 2, "alloccrd");
|
|
card = kzalloc(sizeof(*card), GFP_KERNEL);
|
|
if (!card)
|
|
goto out;
|
|
QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
|
|
|
|
card->gdev = gdev;
|
|
dev_set_drvdata(&gdev->dev, card);
|
|
CARD_RDEV(card) = gdev->cdev[0];
|
|
CARD_WDEV(card) = gdev->cdev[1];
|
|
CARD_DDEV(card) = gdev->cdev[2];
|
|
|
|
card->event_wq = alloc_ordered_workqueue("%s_event", 0,
|
|
dev_name(&gdev->dev));
|
|
if (!card->event_wq)
|
|
goto out_wq;
|
|
|
|
card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
|
|
if (!card->read_cmd)
|
|
goto out_read_cmd;
|
|
|
|
card->debugfs = debugfs_create_dir(dev_name(&gdev->dev),
|
|
qeth_debugfs_root);
|
|
debugfs_create_file("local_addrs", 0400, card->debugfs, card,
|
|
&qeth_debugfs_local_addr_fops);
|
|
|
|
card->qeth_service_level.seq_print = qeth_core_sl_print;
|
|
register_service_level(&card->qeth_service_level);
|
|
return card;
|
|
|
|
out_read_cmd:
|
|
destroy_workqueue(card->event_wq);
|
|
out_wq:
|
|
dev_set_drvdata(&gdev->dev, NULL);
|
|
kfree(card);
|
|
out:
|
|
return NULL;
|
|
}
|
|
|
|
static int qeth_clear_channel(struct qeth_card *card,
|
|
struct qeth_channel *channel)
|
|
{
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 3, "clearch");
|
|
spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
|
|
rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd);
|
|
spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
|
|
|
|
if (rc)
|
|
return rc;
|
|
rc = wait_event_interruptible_timeout(card->wait_q,
|
|
channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
|
|
if (rc == -ERESTARTSYS)
|
|
return rc;
|
|
if (channel->state != CH_STATE_STOPPED)
|
|
return -ETIME;
|
|
channel->state = CH_STATE_DOWN;
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_halt_channel(struct qeth_card *card,
|
|
struct qeth_channel *channel)
|
|
{
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 3, "haltch");
|
|
spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
|
|
rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd);
|
|
spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
|
|
|
|
if (rc)
|
|
return rc;
|
|
rc = wait_event_interruptible_timeout(card->wait_q,
|
|
channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
|
|
if (rc == -ERESTARTSYS)
|
|
return rc;
|
|
if (channel->state != CH_STATE_HALTED)
|
|
return -ETIME;
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_stop_channel(struct qeth_channel *channel)
|
|
{
|
|
struct ccw_device *cdev = channel->ccwdev;
|
|
int rc;
|
|
|
|
rc = ccw_device_set_offline(cdev);
|
|
|
|
spin_lock_irq(get_ccwdev_lock(cdev));
|
|
if (channel->active_cmd)
|
|
dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n",
|
|
channel->active_cmd);
|
|
|
|
cdev->handler = NULL;
|
|
spin_unlock_irq(get_ccwdev_lock(cdev));
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_start_channel(struct qeth_channel *channel)
|
|
{
|
|
struct ccw_device *cdev = channel->ccwdev;
|
|
int rc;
|
|
|
|
channel->state = CH_STATE_DOWN;
|
|
xchg(&channel->active_cmd, NULL);
|
|
|
|
spin_lock_irq(get_ccwdev_lock(cdev));
|
|
cdev->handler = qeth_irq;
|
|
spin_unlock_irq(get_ccwdev_lock(cdev));
|
|
|
|
rc = ccw_device_set_online(cdev);
|
|
if (rc)
|
|
goto err;
|
|
|
|
return 0;
|
|
|
|
err:
|
|
spin_lock_irq(get_ccwdev_lock(cdev));
|
|
cdev->handler = NULL;
|
|
spin_unlock_irq(get_ccwdev_lock(cdev));
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_halt_channels(struct qeth_card *card)
|
|
{
|
|
int rc1 = 0, rc2 = 0, rc3 = 0;
|
|
|
|
QETH_CARD_TEXT(card, 3, "haltchs");
|
|
rc1 = qeth_halt_channel(card, &card->read);
|
|
rc2 = qeth_halt_channel(card, &card->write);
|
|
rc3 = qeth_halt_channel(card, &card->data);
|
|
if (rc1)
|
|
return rc1;
|
|
if (rc2)
|
|
return rc2;
|
|
return rc3;
|
|
}
|
|
|
|
static int qeth_clear_channels(struct qeth_card *card)
|
|
{
|
|
int rc1 = 0, rc2 = 0, rc3 = 0;
|
|
|
|
QETH_CARD_TEXT(card, 3, "clearchs");
|
|
rc1 = qeth_clear_channel(card, &card->read);
|
|
rc2 = qeth_clear_channel(card, &card->write);
|
|
rc3 = qeth_clear_channel(card, &card->data);
|
|
if (rc1)
|
|
return rc1;
|
|
if (rc2)
|
|
return rc2;
|
|
return rc3;
|
|
}
|
|
|
|
static int qeth_clear_halt_card(struct qeth_card *card, int halt)
|
|
{
|
|
int rc = 0;
|
|
|
|
QETH_CARD_TEXT(card, 3, "clhacrd");
|
|
|
|
if (halt)
|
|
rc = qeth_halt_channels(card);
|
|
if (rc)
|
|
return rc;
|
|
return qeth_clear_channels(card);
|
|
}
|
|
|
|
static int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
|
|
{
|
|
int rc = 0;
|
|
|
|
QETH_CARD_TEXT(card, 3, "qdioclr");
|
|
switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
|
|
QETH_QDIO_CLEANING)) {
|
|
case QETH_QDIO_ESTABLISHED:
|
|
if (IS_IQD(card))
|
|
rc = qdio_shutdown(CARD_DDEV(card),
|
|
QDIO_FLAG_CLEANUP_USING_HALT);
|
|
else
|
|
rc = qdio_shutdown(CARD_DDEV(card),
|
|
QDIO_FLAG_CLEANUP_USING_CLEAR);
|
|
if (rc)
|
|
QETH_CARD_TEXT_(card, 3, "1err%d", rc);
|
|
atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
|
|
break;
|
|
case QETH_QDIO_CLEANING:
|
|
return rc;
|
|
default:
|
|
break;
|
|
}
|
|
rc = qeth_clear_halt_card(card, use_halt);
|
|
if (rc)
|
|
QETH_CARD_TEXT_(card, 3, "2err%d", rc);
|
|
return rc;
|
|
}
|
|
|
|
static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
|
|
{
|
|
enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
|
|
struct diag26c_vnic_resp *response = NULL;
|
|
struct diag26c_vnic_req *request = NULL;
|
|
struct ccw_dev_id id;
|
|
char userid[80];
|
|
int rc = 0;
|
|
|
|
QETH_CARD_TEXT(card, 2, "vmlayer");
|
|
|
|
cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
|
|
if (rc)
|
|
goto out;
|
|
|
|
request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
|
|
response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
|
|
if (!request || !response) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
ccw_device_get_id(CARD_RDEV(card), &id);
|
|
request->resp_buf_len = sizeof(*response);
|
|
request->resp_version = DIAG26C_VERSION6_VM65918;
|
|
request->req_format = DIAG26C_VNIC_INFO;
|
|
ASCEBC(userid, 8);
|
|
memcpy(&request->sys_name, userid, 8);
|
|
request->devno = id.devno;
|
|
|
|
QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
|
|
rc = diag26c(request, response, DIAG26C_PORT_VNIC);
|
|
QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
|
|
if (rc)
|
|
goto out;
|
|
QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
|
|
|
|
if (request->resp_buf_len < sizeof(*response) ||
|
|
response->version != request->resp_version) {
|
|
rc = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
if (response->protocol == VNIC_INFO_PROT_L2)
|
|
disc = QETH_DISCIPLINE_LAYER2;
|
|
else if (response->protocol == VNIC_INFO_PROT_L3)
|
|
disc = QETH_DISCIPLINE_LAYER3;
|
|
|
|
out:
|
|
kfree(response);
|
|
kfree(request);
|
|
if (rc)
|
|
QETH_CARD_TEXT_(card, 2, "err%x", rc);
|
|
return disc;
|
|
}
|
|
|
|
/* Determine whether the device requires a specific layer discipline */
|
|
static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
|
|
{
|
|
enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
|
|
|
|
if (IS_OSM(card))
|
|
disc = QETH_DISCIPLINE_LAYER2;
|
|
else if (IS_VM_NIC(card))
|
|
disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
|
|
qeth_vm_detect_layer(card);
|
|
|
|
switch (disc) {
|
|
case QETH_DISCIPLINE_LAYER2:
|
|
QETH_CARD_TEXT(card, 3, "force l2");
|
|
break;
|
|
case QETH_DISCIPLINE_LAYER3:
|
|
QETH_CARD_TEXT(card, 3, "force l3");
|
|
break;
|
|
default:
|
|
QETH_CARD_TEXT(card, 3, "force no");
|
|
}
|
|
|
|
return disc;
|
|
}
|
|
|
|
static void qeth_set_blkt_defaults(struct qeth_card *card)
|
|
{
|
|
QETH_CARD_TEXT(card, 2, "cfgblkt");
|
|
|
|
if (card->info.use_v1_blkt) {
|
|
card->info.blkt.time_total = 0;
|
|
card->info.blkt.inter_packet = 0;
|
|
card->info.blkt.inter_packet_jumbo = 0;
|
|
} else {
|
|
card->info.blkt.time_total = 250;
|
|
card->info.blkt.inter_packet = 5;
|
|
card->info.blkt.inter_packet_jumbo = 15;
|
|
}
|
|
}
|
|
|
|
static void qeth_idx_init(struct qeth_card *card)
|
|
{
|
|
memset(&card->seqno, 0, sizeof(card->seqno));
|
|
|
|
card->token.issuer_rm_w = 0x00010103UL;
|
|
card->token.cm_filter_w = 0x00010108UL;
|
|
card->token.cm_connection_w = 0x0001010aUL;
|
|
card->token.ulp_filter_w = 0x0001010bUL;
|
|
card->token.ulp_connection_w = 0x0001010dUL;
|
|
|
|
switch (card->info.type) {
|
|
case QETH_CARD_TYPE_IQD:
|
|
card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
|
|
break;
|
|
case QETH_CARD_TYPE_OSD:
|
|
card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void qeth_idx_finalize_cmd(struct qeth_card *card,
|
|
struct qeth_cmd_buffer *iob)
|
|
{
|
|
memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
|
|
QETH_SEQ_NO_LENGTH);
|
|
if (iob->channel == &card->write)
|
|
card->seqno.trans_hdr++;
|
|
}
|
|
|
|
static int qeth_peer_func_level(int level)
|
|
{
|
|
if ((level & 0xff) == 8)
|
|
return (level & 0xff) + 0x400;
|
|
if (((level >> 8) & 3) == 1)
|
|
return (level & 0xff) + 0x200;
|
|
return level;
|
|
}
|
|
|
|
static void qeth_mpc_finalize_cmd(struct qeth_card *card,
|
|
struct qeth_cmd_buffer *iob)
|
|
{
|
|
qeth_idx_finalize_cmd(card, iob);
|
|
|
|
memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
|
|
&card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
|
|
card->seqno.pdu_hdr++;
|
|
memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
|
|
&card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
|
|
|
|
iob->callback = qeth_release_buffer_cb;
|
|
}
|
|
|
|
static bool qeth_mpc_match_reply(struct qeth_cmd_buffer *iob,
|
|
struct qeth_cmd_buffer *reply)
|
|
{
|
|
/* MPC cmds are issued strictly in sequence. */
|
|
return !IS_IPA(reply->data);
|
|
}
|
|
|
|
static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
|
|
const void *data,
|
|
unsigned int data_length)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
|
|
if (!iob)
|
|
return NULL;
|
|
|
|
memcpy(iob->data, data, data_length);
|
|
qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
|
|
iob->data);
|
|
iob->finalize = qeth_mpc_finalize_cmd;
|
|
iob->match = qeth_mpc_match_reply;
|
|
return iob;
|
|
}
|
|
|
|
/**
|
|
* qeth_send_control_data() - send control command to the card
|
|
* @card: qeth_card structure pointer
|
|
* @iob: qeth_cmd_buffer pointer
|
|
* @reply_cb: callback function pointer
|
|
* cb_card: pointer to the qeth_card structure
|
|
* cb_reply: pointer to the qeth_reply structure
|
|
* cb_cmd: pointer to the original iob for non-IPA
|
|
* commands, or to the qeth_ipa_cmd structure
|
|
* for the IPA commands.
|
|
* @reply_param: private pointer passed to the callback
|
|
*
|
|
* Callback function gets called one or more times, with cb_cmd
|
|
* pointing to the response returned by the hardware. Callback
|
|
* function must return
|
|
* > 0 if more reply blocks are expected,
|
|
* 0 if the last or only reply block is received, and
|
|
* < 0 on error.
|
|
* Callback function can get the value of the reply_param pointer from the
|
|
* field 'param' of the structure qeth_reply.
|
|
*/
|
|
|
|
static int qeth_send_control_data(struct qeth_card *card,
|
|
struct qeth_cmd_buffer *iob,
|
|
int (*reply_cb)(struct qeth_card *cb_card,
|
|
struct qeth_reply *cb_reply,
|
|
unsigned long cb_cmd),
|
|
void *reply_param)
|
|
{
|
|
struct qeth_channel *channel = iob->channel;
|
|
struct qeth_reply *reply = &iob->reply;
|
|
long timeout = iob->timeout;
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 2, "sendctl");
|
|
|
|
reply->callback = reply_cb;
|
|
reply->param = reply_param;
|
|
|
|
timeout = wait_event_interruptible_timeout(card->wait_q,
|
|
qeth_trylock_channel(channel, iob),
|
|
timeout);
|
|
if (timeout <= 0) {
|
|
qeth_put_cmd(iob);
|
|
return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
|
|
}
|
|
|
|
if (iob->finalize)
|
|
iob->finalize(card, iob);
|
|
QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
|
|
|
|
qeth_enqueue_cmd(card, iob);
|
|
|
|
/* This pairs with iob->callback, and keeps the iob alive after IO: */
|
|
qeth_get_cmd(iob);
|
|
|
|
QETH_CARD_TEXT(card, 6, "noirqpnd");
|
|
spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
|
|
rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
|
|
(addr_t) iob, 0, 0, timeout);
|
|
spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
|
|
if (rc) {
|
|
QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
|
|
CARD_DEVID(card), rc);
|
|
QETH_CARD_TEXT_(card, 2, " err%d", rc);
|
|
qeth_dequeue_cmd(card, iob);
|
|
qeth_put_cmd(iob);
|
|
qeth_unlock_channel(card, channel);
|
|
goto out;
|
|
}
|
|
|
|
timeout = wait_for_completion_interruptible_timeout(&iob->done,
|
|
timeout);
|
|
if (timeout <= 0)
|
|
rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
|
|
|
|
qeth_dequeue_cmd(card, iob);
|
|
|
|
if (reply_cb) {
|
|
/* Wait until the callback for a late reply has completed: */
|
|
spin_lock_irq(&iob->lock);
|
|
if (rc)
|
|
/* Zap any callback that's still pending: */
|
|
iob->rc = rc;
|
|
spin_unlock_irq(&iob->lock);
|
|
}
|
|
|
|
if (!rc)
|
|
rc = iob->rc;
|
|
|
|
out:
|
|
qeth_put_cmd(iob);
|
|
return rc;
|
|
}
|
|
|
|
struct qeth_node_desc {
|
|
struct node_descriptor nd1;
|
|
struct node_descriptor nd2;
|
|
struct node_descriptor nd3;
|
|
};
|
|
|
|
static void qeth_read_conf_data_cb(struct qeth_card *card,
|
|
struct qeth_cmd_buffer *iob,
|
|
unsigned int data_length)
|
|
{
|
|
struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
|
|
int rc = 0;
|
|
u8 *tag;
|
|
|
|
QETH_CARD_TEXT(card, 2, "cfgunit");
|
|
|
|
if (data_length < sizeof(*nd)) {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
|
|
nd->nd1.plant[1] == _ascebc['M'];
|
|
tag = (u8 *)&nd->nd1.tag;
|
|
card->info.chpid = tag[0];
|
|
card->info.unit_addr2 = tag[1];
|
|
|
|
tag = (u8 *)&nd->nd2.tag;
|
|
card->info.cula = tag[1];
|
|
|
|
card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
|
|
nd->nd3.model[1] == 0xF0 &&
|
|
nd->nd3.model[2] >= 0xF1 &&
|
|
nd->nd3.model[2] <= 0xF4;
|
|
|
|
out:
|
|
qeth_notify_cmd(iob, rc);
|
|
qeth_put_cmd(iob);
|
|
}
|
|
|
|
static int qeth_read_conf_data(struct qeth_card *card)
|
|
{
|
|
struct qeth_channel *channel = &card->data;
|
|
struct qeth_cmd_buffer *iob;
|
|
struct ciw *ciw;
|
|
|
|
/* scan for RCD command in extended SenseID data */
|
|
ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
|
|
if (!ciw || ciw->cmd == 0)
|
|
return -EOPNOTSUPP;
|
|
if (ciw->count < sizeof(struct qeth_node_desc))
|
|
return -EINVAL;
|
|
|
|
iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
iob->callback = qeth_read_conf_data_cb;
|
|
qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
|
|
iob->data);
|
|
|
|
return qeth_send_control_data(card, iob, NULL, NULL);
|
|
}
|
|
|
|
static int qeth_idx_check_activate_response(struct qeth_card *card,
|
|
struct qeth_channel *channel,
|
|
struct qeth_cmd_buffer *iob)
|
|
{
|
|
int rc;
|
|
|
|
rc = qeth_check_idx_response(card, iob->data);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
|
|
return 0;
|
|
|
|
/* negative reply: */
|
|
QETH_CARD_TEXT_(card, 2, "idxneg%c",
|
|
QETH_IDX_ACT_CAUSE_CODE(iob->data));
|
|
|
|
switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
|
|
case QETH_IDX_ACT_ERR_EXCL:
|
|
dev_err(&channel->ccwdev->dev,
|
|
"The adapter is used exclusively by another host\n");
|
|
return -EBUSY;
|
|
case QETH_IDX_ACT_ERR_AUTH:
|
|
case QETH_IDX_ACT_ERR_AUTH_USER:
|
|
dev_err(&channel->ccwdev->dev,
|
|
"Setting the device online failed because of insufficient authorization\n");
|
|
return -EPERM;
|
|
default:
|
|
QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
|
|
CCW_DEVID(channel->ccwdev));
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
|
|
struct qeth_cmd_buffer *iob,
|
|
unsigned int data_length)
|
|
{
|
|
struct qeth_channel *channel = iob->channel;
|
|
u16 peer_level;
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 2, "idxrdcb");
|
|
|
|
rc = qeth_idx_check_activate_response(card, channel, iob);
|
|
if (rc)
|
|
goto out;
|
|
|
|
memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
|
|
if (peer_level != qeth_peer_func_level(card->info.func_level)) {
|
|
QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
|
|
CCW_DEVID(channel->ccwdev),
|
|
card->info.func_level, peer_level);
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
memcpy(&card->token.issuer_rm_r,
|
|
QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
|
|
QETH_MPC_TOKEN_LENGTH);
|
|
memcpy(&card->info.mcl_level[0],
|
|
QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
|
|
|
|
out:
|
|
qeth_notify_cmd(iob, rc);
|
|
qeth_put_cmd(iob);
|
|
}
|
|
|
|
static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
|
|
struct qeth_cmd_buffer *iob,
|
|
unsigned int data_length)
|
|
{
|
|
struct qeth_channel *channel = iob->channel;
|
|
u16 peer_level;
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 2, "idxwrcb");
|
|
|
|
rc = qeth_idx_check_activate_response(card, channel, iob);
|
|
if (rc)
|
|
goto out;
|
|
|
|
memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
|
|
if ((peer_level & ~0x0100) !=
|
|
qeth_peer_func_level(card->info.func_level)) {
|
|
QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
|
|
CCW_DEVID(channel->ccwdev),
|
|
card->info.func_level, peer_level);
|
|
rc = -EINVAL;
|
|
}
|
|
|
|
out:
|
|
qeth_notify_cmd(iob, rc);
|
|
qeth_put_cmd(iob);
|
|
}
|
|
|
|
static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
|
|
struct qeth_cmd_buffer *iob)
|
|
{
|
|
u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
|
|
u8 port = ((u8)card->dev->dev_port) | 0x80;
|
|
struct ccw1 *ccw = __ccw_from_cmd(iob);
|
|
|
|
qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
|
|
iob->data);
|
|
qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
|
|
iob->finalize = qeth_idx_finalize_cmd;
|
|
|
|
port |= QETH_IDX_ACT_INVAL_FRAME;
|
|
memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
|
|
memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
|
|
&card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
|
|
memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
|
|
&card->info.func_level, 2);
|
|
memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &card->info.ddev_devno, 2);
|
|
memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
|
|
}
|
|
|
|
static int qeth_idx_activate_read_channel(struct qeth_card *card)
|
|
{
|
|
struct qeth_channel *channel = &card->read;
|
|
struct qeth_cmd_buffer *iob;
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 2, "idxread");
|
|
|
|
iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
|
|
qeth_idx_setup_activate_cmd(card, iob);
|
|
iob->callback = qeth_idx_activate_read_channel_cb;
|
|
|
|
rc = qeth_send_control_data(card, iob, NULL, NULL);
|
|
if (rc)
|
|
return rc;
|
|
|
|
channel->state = CH_STATE_UP;
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_idx_activate_write_channel(struct qeth_card *card)
|
|
{
|
|
struct qeth_channel *channel = &card->write;
|
|
struct qeth_cmd_buffer *iob;
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 2, "idxwrite");
|
|
|
|
iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
|
|
qeth_idx_setup_activate_cmd(card, iob);
|
|
iob->callback = qeth_idx_activate_write_channel_cb;
|
|
|
|
rc = qeth_send_control_data(card, iob, NULL, NULL);
|
|
if (rc)
|
|
return rc;
|
|
|
|
channel->state = CH_STATE_UP;
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
|
|
unsigned long data)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT(card, 2, "cmenblcb");
|
|
|
|
iob = (struct qeth_cmd_buffer *) data;
|
|
memcpy(&card->token.cm_filter_r,
|
|
QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
|
|
QETH_MPC_TOKEN_LENGTH);
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_cm_enable(struct qeth_card *card)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT(card, 2, "cmenable");
|
|
|
|
iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
|
|
&card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
|
|
memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
|
|
&card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
|
|
|
|
return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
|
|
}
|
|
|
|
static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
|
|
unsigned long data)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT(card, 2, "cmsetpcb");
|
|
|
|
iob = (struct qeth_cmd_buffer *) data;
|
|
memcpy(&card->token.cm_connection_r,
|
|
QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
|
|
QETH_MPC_TOKEN_LENGTH);
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_cm_setup(struct qeth_card *card)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT(card, 2, "cmsetup");
|
|
|
|
iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
|
|
&card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
|
|
memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
|
|
&card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
|
|
memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
|
|
&card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
|
|
return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
|
|
}
|
|
|
|
static bool qeth_is_supported_link_type(struct qeth_card *card, u8 link_type)
|
|
{
|
|
if (link_type == QETH_LINK_TYPE_LANE_TR ||
|
|
link_type == QETH_LINK_TYPE_HSTR) {
|
|
dev_err(&card->gdev->dev, "Unsupported Token Ring device\n");
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
|
|
{
|
|
struct net_device *dev = card->dev;
|
|
unsigned int new_mtu;
|
|
|
|
if (!max_mtu) {
|
|
/* IQD needs accurate max MTU to set up its RX buffers: */
|
|
if (IS_IQD(card))
|
|
return -EINVAL;
|
|
/* tolerate quirky HW: */
|
|
max_mtu = ETH_MAX_MTU;
|
|
}
|
|
|
|
rtnl_lock();
|
|
if (IS_IQD(card)) {
|
|
/* move any device with default MTU to new max MTU: */
|
|
new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
|
|
|
|
/* adjust RX buffer size to new max MTU: */
|
|
card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
|
|
if (dev->max_mtu && dev->max_mtu != max_mtu)
|
|
qeth_free_qdio_queues(card);
|
|
} else {
|
|
if (dev->mtu)
|
|
new_mtu = dev->mtu;
|
|
/* default MTUs for first setup: */
|
|
else if (IS_LAYER2(card))
|
|
new_mtu = ETH_DATA_LEN;
|
|
else
|
|
new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
|
|
}
|
|
|
|
dev->max_mtu = max_mtu;
|
|
dev->mtu = min(new_mtu, max_mtu);
|
|
rtnl_unlock();
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_get_mtu_outof_framesize(int framesize)
|
|
{
|
|
switch (framesize) {
|
|
case 0x4000:
|
|
return 8192;
|
|
case 0x6000:
|
|
return 16384;
|
|
case 0xa000:
|
|
return 32768;
|
|
case 0xffff:
|
|
return 57344;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
|
|
unsigned long data)
|
|
{
|
|
__u16 mtu, framesize;
|
|
__u16 len;
|
|
struct qeth_cmd_buffer *iob;
|
|
u8 link_type = 0;
|
|
|
|
QETH_CARD_TEXT(card, 2, "ulpenacb");
|
|
|
|
iob = (struct qeth_cmd_buffer *) data;
|
|
memcpy(&card->token.ulp_filter_r,
|
|
QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
|
|
QETH_MPC_TOKEN_LENGTH);
|
|
if (IS_IQD(card)) {
|
|
memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
|
|
mtu = qeth_get_mtu_outof_framesize(framesize);
|
|
} else {
|
|
mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
|
|
}
|
|
*(u16 *)reply->param = mtu;
|
|
|
|
memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
|
|
if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
|
|
memcpy(&link_type,
|
|
QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
|
|
if (!qeth_is_supported_link_type(card, link_type))
|
|
return -EPROTONOSUPPORT;
|
|
}
|
|
|
|
card->info.link_type = link_type;
|
|
QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
|
|
return 0;
|
|
}
|
|
|
|
static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
|
|
{
|
|
return IS_LAYER2(card) ? QETH_MPC_PROT_L2 : QETH_MPC_PROT_L3;
|
|
}
|
|
|
|
static int qeth_ulp_enable(struct qeth_card *card)
|
|
{
|
|
u8 prot_type = qeth_mpc_select_prot_type(card);
|
|
struct qeth_cmd_buffer *iob;
|
|
u16 max_mtu;
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 2, "ulpenabl");
|
|
|
|
iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
*(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
|
|
memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
|
|
memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
|
|
&card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
|
|
memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
|
|
&card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
|
|
rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
|
|
if (rc)
|
|
return rc;
|
|
return qeth_update_max_mtu(card, max_mtu);
|
|
}
|
|
|
|
static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
|
|
unsigned long data)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT(card, 2, "ulpstpcb");
|
|
|
|
iob = (struct qeth_cmd_buffer *) data;
|
|
memcpy(&card->token.ulp_connection_r,
|
|
QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
|
|
QETH_MPC_TOKEN_LENGTH);
|
|
if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
|
|
3)) {
|
|
QETH_CARD_TEXT(card, 2, "olmlimit");
|
|
dev_err(&card->gdev->dev, "A connection could not be "
|
|
"established because of an OLM limit\n");
|
|
return -EMLINK;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_ulp_setup(struct qeth_card *card)
|
|
{
|
|
__u16 temp;
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT(card, 2, "ulpsetup");
|
|
|
|
iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
|
|
&card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
|
|
memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
|
|
&card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
|
|
memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
|
|
&card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
|
|
|
|
memcpy(QETH_ULP_SETUP_CUA(iob->data), &card->info.ddev_devno, 2);
|
|
temp = (card->info.cula << 8) + card->info.unit_addr2;
|
|
memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
|
|
return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
|
|
}
|
|
|
|
static int qeth_alloc_out_buf(struct qeth_qdio_out_q *q, unsigned int bidx,
|
|
gfp_t gfp)
|
|
{
|
|
struct qeth_qdio_out_buffer *newbuf;
|
|
|
|
newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, gfp);
|
|
if (!newbuf)
|
|
return -ENOMEM;
|
|
|
|
newbuf->buffer = q->qdio_bufs[bidx];
|
|
skb_queue_head_init(&newbuf->skb_list);
|
|
lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
|
|
atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
|
|
q->bufs[bidx] = newbuf;
|
|
return 0;
|
|
}
|
|
|
|
static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
|
|
{
|
|
if (!q)
|
|
return;
|
|
|
|
qeth_drain_output_queue(q, true);
|
|
qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
|
|
kfree(q);
|
|
}
|
|
|
|
static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
|
|
{
|
|
struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
|
|
unsigned int i;
|
|
|
|
if (!q)
|
|
return NULL;
|
|
|
|
if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q))
|
|
goto err_qdio_bufs;
|
|
|
|
for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
|
|
if (qeth_alloc_out_buf(q, i, GFP_KERNEL))
|
|
goto err_out_bufs;
|
|
}
|
|
|
|
return q;
|
|
|
|
err_out_bufs:
|
|
while (i > 0)
|
|
qeth_free_out_buf(q->bufs[--i]);
|
|
qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
|
|
err_qdio_bufs:
|
|
kfree(q);
|
|
return NULL;
|
|
}
|
|
|
|
static void qeth_tx_completion_timer(struct timer_list *timer)
|
|
{
|
|
struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
|
|
|
|
napi_schedule(&queue->napi);
|
|
QETH_TXQ_STAT_INC(queue, completion_timer);
|
|
}
|
|
|
|
static int qeth_alloc_qdio_queues(struct qeth_card *card)
|
|
{
|
|
unsigned int i;
|
|
|
|
QETH_CARD_TEXT(card, 2, "allcqdbf");
|
|
|
|
if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
|
|
QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
|
|
return 0;
|
|
|
|
/* inbound buffer pool */
|
|
if (qeth_alloc_buffer_pool(card))
|
|
goto out_buffer_pool;
|
|
|
|
/* outbound */
|
|
for (i = 0; i < card->qdio.no_out_queues; ++i) {
|
|
struct qeth_qdio_out_q *queue;
|
|
|
|
queue = qeth_alloc_output_queue();
|
|
if (!queue)
|
|
goto out_freeoutq;
|
|
QETH_CARD_TEXT_(card, 2, "outq %i", i);
|
|
QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
|
|
card->qdio.out_qs[i] = queue;
|
|
queue->card = card;
|
|
queue->queue_no = i;
|
|
INIT_LIST_HEAD(&queue->pending_bufs);
|
|
spin_lock_init(&queue->lock);
|
|
timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
|
|
if (IS_IQD(card)) {
|
|
queue->coalesce_usecs = QETH_TX_COALESCE_USECS;
|
|
queue->max_coalesced_frames = QETH_TX_MAX_COALESCED_FRAMES;
|
|
queue->rescan_usecs = QETH_TX_TIMER_USECS;
|
|
} else {
|
|
queue->coalesce_usecs = USEC_PER_SEC;
|
|
queue->max_coalesced_frames = 0;
|
|
queue->rescan_usecs = 10 * USEC_PER_SEC;
|
|
}
|
|
queue->priority = QETH_QIB_PQUE_PRIO_DEFAULT;
|
|
}
|
|
|
|
/* completion */
|
|
if (qeth_alloc_cq(card))
|
|
goto out_freeoutq;
|
|
|
|
return 0;
|
|
|
|
out_freeoutq:
|
|
while (i > 0) {
|
|
qeth_free_output_queue(card->qdio.out_qs[--i]);
|
|
card->qdio.out_qs[i] = NULL;
|
|
}
|
|
qeth_free_buffer_pool(card);
|
|
out_buffer_pool:
|
|
atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static void qeth_free_qdio_queues(struct qeth_card *card)
|
|
{
|
|
int i, j;
|
|
|
|
if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
|
|
QETH_QDIO_UNINITIALIZED)
|
|
return;
|
|
|
|
qeth_free_cq(card);
|
|
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
|
|
if (card->qdio.in_q->bufs[j].rx_skb) {
|
|
consume_skb(card->qdio.in_q->bufs[j].rx_skb);
|
|
card->qdio.in_q->bufs[j].rx_skb = NULL;
|
|
}
|
|
}
|
|
|
|
/* inbound buffer pool */
|
|
qeth_free_buffer_pool(card);
|
|
/* free outbound qdio_qs */
|
|
for (i = 0; i < card->qdio.no_out_queues; i++) {
|
|
qeth_free_output_queue(card->qdio.out_qs[i]);
|
|
card->qdio.out_qs[i] = NULL;
|
|
}
|
|
}
|
|
|
|
static void qeth_fill_qib_parms(struct qeth_card *card,
|
|
struct qeth_qib_parms *parms)
|
|
{
|
|
struct qeth_qdio_out_q *queue;
|
|
unsigned int i;
|
|
|
|
parms->pcit_magic[0] = 'P';
|
|
parms->pcit_magic[1] = 'C';
|
|
parms->pcit_magic[2] = 'I';
|
|
parms->pcit_magic[3] = 'T';
|
|
ASCEBC(parms->pcit_magic, sizeof(parms->pcit_magic));
|
|
parms->pcit_a = QETH_PCI_THRESHOLD_A(card);
|
|
parms->pcit_b = QETH_PCI_THRESHOLD_B(card);
|
|
parms->pcit_c = QETH_PCI_TIMER_VALUE(card);
|
|
|
|
parms->blkt_magic[0] = 'B';
|
|
parms->blkt_magic[1] = 'L';
|
|
parms->blkt_magic[2] = 'K';
|
|
parms->blkt_magic[3] = 'T';
|
|
ASCEBC(parms->blkt_magic, sizeof(parms->blkt_magic));
|
|
parms->blkt_total = card->info.blkt.time_total;
|
|
parms->blkt_inter_packet = card->info.blkt.inter_packet;
|
|
parms->blkt_inter_packet_jumbo = card->info.blkt.inter_packet_jumbo;
|
|
|
|
/* Prio-queueing implicitly uses the default priorities: */
|
|
if (qeth_uses_tx_prio_queueing(card) || card->qdio.no_out_queues == 1)
|
|
return;
|
|
|
|
parms->pque_magic[0] = 'P';
|
|
parms->pque_magic[1] = 'Q';
|
|
parms->pque_magic[2] = 'U';
|
|
parms->pque_magic[3] = 'E';
|
|
ASCEBC(parms->pque_magic, sizeof(parms->pque_magic));
|
|
parms->pque_order = QETH_QIB_PQUE_ORDER_RR;
|
|
parms->pque_units = QETH_QIB_PQUE_UNITS_SBAL;
|
|
|
|
qeth_for_each_output_queue(card, queue, i)
|
|
parms->pque_priority[i] = queue->priority;
|
|
}
|
|
|
|
static int qeth_qdio_activate(struct qeth_card *card)
|
|
{
|
|
QETH_CARD_TEXT(card, 3, "qdioact");
|
|
return qdio_activate(CARD_DDEV(card));
|
|
}
|
|
|
|
static int qeth_dm_act(struct qeth_card *card)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT(card, 2, "dmact");
|
|
|
|
iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
|
|
&card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
|
|
memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
|
|
&card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
|
|
return qeth_send_control_data(card, iob, NULL, NULL);
|
|
}
|
|
|
|
static int qeth_mpc_initialize(struct qeth_card *card)
|
|
{
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 2, "mpcinit");
|
|
|
|
rc = qeth_issue_next_read(card);
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "1err%d", rc);
|
|
return rc;
|
|
}
|
|
rc = qeth_cm_enable(card);
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "2err%d", rc);
|
|
return rc;
|
|
}
|
|
rc = qeth_cm_setup(card);
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "3err%d", rc);
|
|
return rc;
|
|
}
|
|
rc = qeth_ulp_enable(card);
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "4err%d", rc);
|
|
return rc;
|
|
}
|
|
rc = qeth_ulp_setup(card);
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "5err%d", rc);
|
|
return rc;
|
|
}
|
|
rc = qeth_alloc_qdio_queues(card);
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "5err%d", rc);
|
|
return rc;
|
|
}
|
|
rc = qeth_qdio_establish(card);
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "6err%d", rc);
|
|
qeth_free_qdio_queues(card);
|
|
return rc;
|
|
}
|
|
rc = qeth_qdio_activate(card);
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "7err%d", rc);
|
|
return rc;
|
|
}
|
|
rc = qeth_dm_act(card);
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "8err%d", rc);
|
|
return rc;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void qeth_print_status_message(struct qeth_card *card)
|
|
{
|
|
switch (card->info.type) {
|
|
case QETH_CARD_TYPE_OSD:
|
|
case QETH_CARD_TYPE_OSM:
|
|
case QETH_CARD_TYPE_OSX:
|
|
/* VM will use a non-zero first character
|
|
* to indicate a HiperSockets like reporting
|
|
* of the level OSA sets the first character to zero
|
|
* */
|
|
if (!card->info.mcl_level[0]) {
|
|
sprintf(card->info.mcl_level, "%02x%02x",
|
|
card->info.mcl_level[2],
|
|
card->info.mcl_level[3]);
|
|
break;
|
|
}
|
|
fallthrough;
|
|
case QETH_CARD_TYPE_IQD:
|
|
if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
|
|
card->info.mcl_level[0] = (char) _ebcasc[(__u8)
|
|
card->info.mcl_level[0]];
|
|
card->info.mcl_level[1] = (char) _ebcasc[(__u8)
|
|
card->info.mcl_level[1]];
|
|
card->info.mcl_level[2] = (char) _ebcasc[(__u8)
|
|
card->info.mcl_level[2]];
|
|
card->info.mcl_level[3] = (char) _ebcasc[(__u8)
|
|
card->info.mcl_level[3]];
|
|
card->info.mcl_level[QETH_MCL_LENGTH] = 0;
|
|
}
|
|
break;
|
|
default:
|
|
memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
|
|
}
|
|
dev_info(&card->gdev->dev,
|
|
"Device is a%s card%s%s%s\nwith link type %s.\n",
|
|
qeth_get_cardname(card),
|
|
(card->info.mcl_level[0]) ? " (level: " : "",
|
|
(card->info.mcl_level[0]) ? card->info.mcl_level : "",
|
|
(card->info.mcl_level[0]) ? ")" : "",
|
|
qeth_get_cardname_short(card));
|
|
}
|
|
|
|
static void qeth_initialize_working_pool_list(struct qeth_card *card)
|
|
{
|
|
struct qeth_buffer_pool_entry *entry;
|
|
|
|
QETH_CARD_TEXT(card, 5, "inwrklst");
|
|
|
|
list_for_each_entry(entry,
|
|
&card->qdio.init_pool.entry_list, init_list) {
|
|
qeth_put_buffer_pool_entry(card, entry);
|
|
}
|
|
}
|
|
|
|
static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
|
|
struct qeth_card *card)
|
|
{
|
|
struct qeth_buffer_pool_entry *entry;
|
|
int i, free;
|
|
|
|
if (list_empty(&card->qdio.in_buf_pool.entry_list))
|
|
return NULL;
|
|
|
|
list_for_each_entry(entry, &card->qdio.in_buf_pool.entry_list, list) {
|
|
free = 1;
|
|
for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
|
|
if (page_count(entry->elements[i]) > 1) {
|
|
free = 0;
|
|
break;
|
|
}
|
|
}
|
|
if (free) {
|
|
list_del_init(&entry->list);
|
|
return entry;
|
|
}
|
|
}
|
|
|
|
/* no free buffer in pool so take first one and swap pages */
|
|
entry = list_first_entry(&card->qdio.in_buf_pool.entry_list,
|
|
struct qeth_buffer_pool_entry, list);
|
|
for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
|
|
if (page_count(entry->elements[i]) > 1) {
|
|
struct page *page = dev_alloc_page();
|
|
|
|
if (!page)
|
|
return NULL;
|
|
|
|
__free_page(entry->elements[i]);
|
|
entry->elements[i] = page;
|
|
QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
|
|
}
|
|
}
|
|
list_del_init(&entry->list);
|
|
return entry;
|
|
}
|
|
|
|
static int qeth_init_input_buffer(struct qeth_card *card,
|
|
struct qeth_qdio_buffer *buf)
|
|
{
|
|
struct qeth_buffer_pool_entry *pool_entry = buf->pool_entry;
|
|
int i;
|
|
|
|
if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
|
|
buf->rx_skb = netdev_alloc_skb(card->dev,
|
|
ETH_HLEN +
|
|
sizeof(struct ipv6hdr));
|
|
if (!buf->rx_skb)
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if (!pool_entry) {
|
|
pool_entry = qeth_find_free_buffer_pool_entry(card);
|
|
if (!pool_entry)
|
|
return -ENOBUFS;
|
|
|
|
buf->pool_entry = pool_entry;
|
|
}
|
|
|
|
/*
|
|
* since the buffer is accessed only from the input_tasklet
|
|
* there shouldn't be a need to synchronize; also, since we use
|
|
* the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
|
|
* buffers
|
|
*/
|
|
for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
|
|
buf->buffer->element[i].length = PAGE_SIZE;
|
|
buf->buffer->element[i].addr =
|
|
page_to_phys(pool_entry->elements[i]);
|
|
if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
|
|
buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
|
|
else
|
|
buf->buffer->element[i].eflags = 0;
|
|
buf->buffer->element[i].sflags = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card,
|
|
struct qeth_qdio_out_q *queue)
|
|
{
|
|
if (!IS_IQD(card) ||
|
|
qeth_iqd_is_mcast_queue(card, queue) ||
|
|
card->options.cq == QETH_CQ_ENABLED ||
|
|
qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd))
|
|
return 1;
|
|
|
|
return card->ssqd.mmwc ? card->ssqd.mmwc : 1;
|
|
}
|
|
|
|
static int qeth_init_qdio_queues(struct qeth_card *card)
|
|
{
|
|
unsigned int rx_bufs = card->qdio.in_buf_pool.buf_count;
|
|
unsigned int i;
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 2, "initqdqs");
|
|
|
|
/* inbound queue */
|
|
qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
|
|
memset(&card->rx, 0, sizeof(struct qeth_rx));
|
|
|
|
qeth_initialize_working_pool_list(card);
|
|
/*give only as many buffers to hardware as we have buffer pool entries*/
|
|
for (i = 0; i < rx_bufs; i++) {
|
|
rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
|
|
card->qdio.in_q->next_buf_to_init = QDIO_BUFNR(rx_bufs);
|
|
rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 0, 0, rx_bufs);
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "1err%d", rc);
|
|
return rc;
|
|
}
|
|
|
|
/* completion */
|
|
rc = qeth_cq_init(card);
|
|
if (rc) {
|
|
return rc;
|
|
}
|
|
|
|
/* outbound queue */
|
|
for (i = 0; i < card->qdio.no_out_queues; ++i) {
|
|
struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
|
|
|
|
qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
|
|
queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
|
|
queue->next_buf_to_fill = 0;
|
|
queue->do_pack = 0;
|
|
queue->prev_hdr = NULL;
|
|
queue->coalesced_frames = 0;
|
|
queue->bulk_start = 0;
|
|
queue->bulk_count = 0;
|
|
queue->bulk_max = qeth_tx_select_bulk_max(card, queue);
|
|
atomic_set(&queue->used_buffers, 0);
|
|
atomic_set(&queue->set_pci_flags_count, 0);
|
|
netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void qeth_ipa_finalize_cmd(struct qeth_card *card,
|
|
struct qeth_cmd_buffer *iob)
|
|
{
|
|
qeth_mpc_finalize_cmd(card, iob);
|
|
|
|
/* override with IPA-specific values: */
|
|
__ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
|
|
}
|
|
|
|
static void qeth_prepare_ipa_cmd(struct qeth_card *card,
|
|
struct qeth_cmd_buffer *iob, u16 cmd_length)
|
|
{
|
|
u8 prot_type = qeth_mpc_select_prot_type(card);
|
|
u16 total_length = iob->length;
|
|
|
|
qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
|
|
iob->data);
|
|
iob->finalize = qeth_ipa_finalize_cmd;
|
|
|
|
memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
|
|
memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
|
|
memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
|
|
memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
|
|
memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
|
|
memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
|
|
&card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
|
|
memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
|
|
}
|
|
|
|
static bool qeth_ipa_match_reply(struct qeth_cmd_buffer *iob,
|
|
struct qeth_cmd_buffer *reply)
|
|
{
|
|
struct qeth_ipa_cmd *ipa_reply = __ipa_reply(reply);
|
|
|
|
return ipa_reply && (__ipa_cmd(iob)->hdr.seqno == ipa_reply->hdr.seqno);
|
|
}
|
|
|
|
struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
|
|
enum qeth_ipa_cmds cmd_code,
|
|
enum qeth_prot_versions prot,
|
|
unsigned int data_length)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
struct qeth_ipacmd_hdr *hdr;
|
|
|
|
data_length += offsetof(struct qeth_ipa_cmd, data);
|
|
iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
|
|
QETH_IPA_TIMEOUT);
|
|
if (!iob)
|
|
return NULL;
|
|
|
|
qeth_prepare_ipa_cmd(card, iob, data_length);
|
|
iob->match = qeth_ipa_match_reply;
|
|
|
|
hdr = &__ipa_cmd(iob)->hdr;
|
|
hdr->command = cmd_code;
|
|
hdr->initiator = IPA_CMD_INITIATOR_HOST;
|
|
/* hdr->seqno is set by qeth_send_control_data() */
|
|
hdr->adapter_type = QETH_LINK_TYPE_FAST_ETH;
|
|
hdr->rel_adapter_no = (u8) card->dev->dev_port;
|
|
hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
|
|
hdr->param_count = 1;
|
|
hdr->prot_version = prot;
|
|
return iob;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
|
|
|
|
static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply, unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
|
|
|
|
return (cmd->hdr.return_code) ? -EIO : 0;
|
|
}
|
|
|
|
/*
|
|
* qeth_send_ipa_cmd() - send an IPA command
|
|
*
|
|
* See qeth_send_control_data() for explanation of the arguments.
|
|
*/
|
|
|
|
int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
|
|
int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
|
|
unsigned long),
|
|
void *reply_param)
|
|
{
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 4, "sendipa");
|
|
|
|
if (card->read_or_write_problem) {
|
|
qeth_put_cmd(iob);
|
|
return -EIO;
|
|
}
|
|
|
|
if (reply_cb == NULL)
|
|
reply_cb = qeth_send_ipa_cmd_cb;
|
|
rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
|
|
if (rc == -ETIME) {
|
|
qeth_clear_ipacmd_list(card);
|
|
qeth_schedule_recovery(card);
|
|
}
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
|
|
|
|
static int qeth_send_startlan_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply, unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
|
|
|
|
if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
|
|
return -ENETDOWN;
|
|
|
|
return (cmd->hdr.return_code) ? -EIO : 0;
|
|
}
|
|
|
|
static int qeth_send_startlan(struct qeth_card *card)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT(card, 2, "strtlan");
|
|
|
|
iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
|
|
}
|
|
|
|
static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
|
|
{
|
|
if (!cmd->hdr.return_code)
|
|
cmd->hdr.return_code =
|
|
cmd->data.setadapterparms.hdr.return_code;
|
|
return cmd->hdr.return_code;
|
|
}
|
|
|
|
static int qeth_query_setadapterparms_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply, unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
|
|
struct qeth_query_cmds_supp *query_cmd;
|
|
|
|
QETH_CARD_TEXT(card, 3, "quyadpcb");
|
|
if (qeth_setadpparms_inspect_rc(cmd))
|
|
return -EIO;
|
|
|
|
query_cmd = &cmd->data.setadapterparms.data.query_cmds_supp;
|
|
if (query_cmd->lan_type & 0x7f) {
|
|
if (!qeth_is_supported_link_type(card, query_cmd->lan_type))
|
|
return -EPROTONOSUPPORT;
|
|
|
|
card->info.link_type = query_cmd->lan_type;
|
|
QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
|
|
}
|
|
|
|
card->options.adp.supported = query_cmd->supported_cmds;
|
|
return 0;
|
|
}
|
|
|
|
static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
|
|
enum qeth_ipa_setadp_cmd adp_cmd,
|
|
unsigned int data_length)
|
|
{
|
|
struct qeth_ipacmd_setadpparms_hdr *hdr;
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
|
|
data_length +
|
|
offsetof(struct qeth_ipacmd_setadpparms,
|
|
data));
|
|
if (!iob)
|
|
return NULL;
|
|
|
|
hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
|
|
hdr->cmdlength = sizeof(*hdr) + data_length;
|
|
hdr->command_code = adp_cmd;
|
|
hdr->used_total = 1;
|
|
hdr->seq_no = 1;
|
|
return iob;
|
|
}
|
|
|
|
static int qeth_query_setadapterparms(struct qeth_card *card)
|
|
{
|
|
int rc;
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT(card, 3, "queryadp");
|
|
iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
|
|
SETADP_DATA_SIZEOF(query_cmds_supp));
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_query_ipassists_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply, unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd;
|
|
|
|
QETH_CARD_TEXT(card, 2, "qipasscb");
|
|
|
|
cmd = (struct qeth_ipa_cmd *) data;
|
|
|
|
switch (cmd->hdr.return_code) {
|
|
case IPA_RC_SUCCESS:
|
|
break;
|
|
case IPA_RC_NOTSUPP:
|
|
case IPA_RC_L2_UNSUPPORTED_CMD:
|
|
QETH_CARD_TEXT(card, 2, "ipaunsup");
|
|
card->options.ipa4.supported |= IPA_SETADAPTERPARMS;
|
|
card->options.ipa6.supported |= IPA_SETADAPTERPARMS;
|
|
return -EOPNOTSUPP;
|
|
default:
|
|
QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
|
|
CARD_DEVID(card), cmd->hdr.return_code);
|
|
return -EIO;
|
|
}
|
|
|
|
if (cmd->hdr.prot_version == QETH_PROT_IPV4)
|
|
card->options.ipa4 = cmd->hdr.assists;
|
|
else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
|
|
card->options.ipa6 = cmd->hdr.assists;
|
|
else
|
|
QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
|
|
CARD_DEVID(card));
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_query_ipassists(struct qeth_card *card,
|
|
enum qeth_prot_versions prot)
|
|
{
|
|
int rc;
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
|
|
iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_query_switch_attributes_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply, unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
|
|
struct qeth_query_switch_attributes *attrs;
|
|
struct qeth_switch_info *sw_info;
|
|
|
|
QETH_CARD_TEXT(card, 2, "qswiatcb");
|
|
if (qeth_setadpparms_inspect_rc(cmd))
|
|
return -EIO;
|
|
|
|
sw_info = (struct qeth_switch_info *)reply->param;
|
|
attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
|
|
sw_info->capabilities = attrs->capabilities;
|
|
sw_info->settings = attrs->settings;
|
|
QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
|
|
sw_info->settings);
|
|
return 0;
|
|
}
|
|
|
|
int qeth_query_switch_attributes(struct qeth_card *card,
|
|
struct qeth_switch_info *sw_info)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT(card, 2, "qswiattr");
|
|
if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
|
|
return -EOPNOTSUPP;
|
|
if (!netif_carrier_ok(card->dev))
|
|
return -ENOMEDIUM;
|
|
iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
return qeth_send_ipa_cmd(card, iob,
|
|
qeth_query_switch_attributes_cb, sw_info);
|
|
}
|
|
|
|
struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
|
|
enum qeth_diags_cmds sub_cmd,
|
|
unsigned int data_length)
|
|
{
|
|
struct qeth_ipacmd_diagass *cmd;
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
|
|
DIAG_HDR_LEN + data_length);
|
|
if (!iob)
|
|
return NULL;
|
|
|
|
cmd = &__ipa_cmd(iob)->data.diagass;
|
|
cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
|
|
cmd->subcmd = sub_cmd;
|
|
return iob;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
|
|
|
|
static int qeth_query_setdiagass_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply, unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
|
|
u16 rc = cmd->hdr.return_code;
|
|
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
|
|
return -EIO;
|
|
}
|
|
|
|
card->info.diagass_support = cmd->data.diagass.ext;
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_query_setdiagass(struct qeth_card *card)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT(card, 2, "qdiagass");
|
|
iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
|
|
}
|
|
|
|
static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
|
|
{
|
|
unsigned long info = get_zeroed_page(GFP_KERNEL);
|
|
struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
|
|
struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
|
|
struct ccw_dev_id ccwid;
|
|
int level;
|
|
|
|
tid->chpid = card->info.chpid;
|
|
ccw_device_get_id(CARD_RDEV(card), &ccwid);
|
|
tid->ssid = ccwid.ssid;
|
|
tid->devno = ccwid.devno;
|
|
if (!info)
|
|
return;
|
|
level = stsi(NULL, 0, 0, 0);
|
|
if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
|
|
tid->lparnr = info222->lpar_number;
|
|
if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
|
|
EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
|
|
memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
|
|
}
|
|
free_page(info);
|
|
}
|
|
|
|
static int qeth_hw_trap_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply, unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
|
|
u16 rc = cmd->hdr.return_code;
|
|
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
|
|
return -EIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
struct qeth_ipa_cmd *cmd;
|
|
|
|
QETH_CARD_TEXT(card, 2, "diagtrap");
|
|
iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
cmd = __ipa_cmd(iob);
|
|
cmd->data.diagass.type = 1;
|
|
cmd->data.diagass.action = action;
|
|
switch (action) {
|
|
case QETH_DIAGS_TRAP_ARM:
|
|
cmd->data.diagass.options = 0x0003;
|
|
cmd->data.diagass.ext = 0x00010000 +
|
|
sizeof(struct qeth_trap_id);
|
|
qeth_get_trap_id(card,
|
|
(struct qeth_trap_id *)cmd->data.diagass.cdata);
|
|
break;
|
|
case QETH_DIAGS_TRAP_DISARM:
|
|
cmd->data.diagass.options = 0x0001;
|
|
break;
|
|
case QETH_DIAGS_TRAP_CAPTURE:
|
|
break;
|
|
}
|
|
return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
|
|
}
|
|
|
|
static int qeth_check_qdio_errors(struct qeth_card *card,
|
|
struct qdio_buffer *buf,
|
|
unsigned int qdio_error,
|
|
const char *dbftext)
|
|
{
|
|
if (qdio_error) {
|
|
QETH_CARD_TEXT(card, 2, dbftext);
|
|
QETH_CARD_TEXT_(card, 2, " F15=%02X",
|
|
buf->element[15].sflags);
|
|
QETH_CARD_TEXT_(card, 2, " F14=%02X",
|
|
buf->element[14].sflags);
|
|
QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
|
|
if ((buf->element[15].sflags) == 0x12) {
|
|
QETH_CARD_STAT_INC(card, rx_fifo_errors);
|
|
return 0;
|
|
} else
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static unsigned int qeth_rx_refill_queue(struct qeth_card *card,
|
|
unsigned int count)
|
|
{
|
|
struct qeth_qdio_q *queue = card->qdio.in_q;
|
|
struct list_head *lh;
|
|
int i;
|
|
int rc;
|
|
int newcount = 0;
|
|
|
|
/* only requeue at a certain threshold to avoid SIGAs */
|
|
if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
|
|
for (i = queue->next_buf_to_init;
|
|
i < queue->next_buf_to_init + count; ++i) {
|
|
if (qeth_init_input_buffer(card,
|
|
&queue->bufs[QDIO_BUFNR(i)])) {
|
|
break;
|
|
} else {
|
|
newcount++;
|
|
}
|
|
}
|
|
|
|
if (newcount < count) {
|
|
/* we are in memory shortage so we switch back to
|
|
traditional skb allocation and drop packages */
|
|
atomic_set(&card->force_alloc_skb, 3);
|
|
count = newcount;
|
|
} else {
|
|
atomic_add_unless(&card->force_alloc_skb, -1, 0);
|
|
}
|
|
|
|
if (!count) {
|
|
i = 0;
|
|
list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
|
|
i++;
|
|
if (i == card->qdio.in_buf_pool.buf_count) {
|
|
QETH_CARD_TEXT(card, 2, "qsarbw");
|
|
schedule_delayed_work(
|
|
&card->buffer_reclaim_work,
|
|
QETH_RECLAIM_WORK_TIME);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 0,
|
|
queue->next_buf_to_init,
|
|
count);
|
|
if (rc) {
|
|
QETH_CARD_TEXT(card, 2, "qinberr");
|
|
}
|
|
queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init +
|
|
count);
|
|
return count;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void qeth_buffer_reclaim_work(struct work_struct *work)
|
|
{
|
|
struct qeth_card *card = container_of(to_delayed_work(work),
|
|
struct qeth_card,
|
|
buffer_reclaim_work);
|
|
|
|
local_bh_disable();
|
|
napi_schedule(&card->napi);
|
|
/* kick-start the NAPI softirq: */
|
|
local_bh_enable();
|
|
}
|
|
|
|
static void qeth_handle_send_error(struct qeth_card *card,
|
|
struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
|
|
{
|
|
int sbalf15 = buffer->buffer->element[15].sflags;
|
|
|
|
QETH_CARD_TEXT(card, 6, "hdsnderr");
|
|
qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
|
|
|
|
if (!qdio_err)
|
|
return;
|
|
|
|
if ((sbalf15 >= 15) && (sbalf15 <= 31))
|
|
return;
|
|
|
|
QETH_CARD_TEXT(card, 1, "lnkfail");
|
|
QETH_CARD_TEXT_(card, 1, "%04x %02x",
|
|
(u16)qdio_err, (u8)sbalf15);
|
|
}
|
|
|
|
/**
|
|
* qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
|
|
* @queue: queue to check for packing buffer
|
|
*
|
|
* Returns number of buffers that were prepared for flush.
|
|
*/
|
|
static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
|
|
{
|
|
struct qeth_qdio_out_buffer *buffer;
|
|
|
|
buffer = queue->bufs[queue->next_buf_to_fill];
|
|
if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
|
|
(buffer->next_element_to_fill > 0)) {
|
|
/* it's a packing buffer */
|
|
atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
|
|
queue->next_buf_to_fill =
|
|
QDIO_BUFNR(queue->next_buf_to_fill + 1);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Switched to packing state if the number of used buffers on a queue
|
|
* reaches a certain limit.
|
|
*/
|
|
static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
|
|
{
|
|
if (!queue->do_pack) {
|
|
if (atomic_read(&queue->used_buffers)
|
|
>= QETH_HIGH_WATERMARK_PACK){
|
|
/* switch non-PACKING -> PACKING */
|
|
QETH_CARD_TEXT(queue->card, 6, "np->pack");
|
|
QETH_TXQ_STAT_INC(queue, packing_mode_switch);
|
|
queue->do_pack = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Switches from packing to non-packing mode. If there is a packing
|
|
* buffer on the queue this buffer will be prepared to be flushed.
|
|
* In that case 1 is returned to inform the caller. If no buffer
|
|
* has to be flushed, zero is returned.
|
|
*/
|
|
static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
|
|
{
|
|
if (queue->do_pack) {
|
|
if (atomic_read(&queue->used_buffers)
|
|
<= QETH_LOW_WATERMARK_PACK) {
|
|
/* switch PACKING -> non-PACKING */
|
|
QETH_CARD_TEXT(queue->card, 6, "pack->np");
|
|
QETH_TXQ_STAT_INC(queue, packing_mode_switch);
|
|
queue->do_pack = 0;
|
|
return qeth_prep_flush_pack_buffer(queue);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
|
|
int count)
|
|
{
|
|
struct qeth_qdio_out_buffer *buf = queue->bufs[index];
|
|
struct qeth_card *card = queue->card;
|
|
unsigned int frames, usecs;
|
|
struct qaob *aob = NULL;
|
|
int rc;
|
|
int i;
|
|
|
|
for (i = index; i < index + count; ++i) {
|
|
unsigned int bidx = QDIO_BUFNR(i);
|
|
struct sk_buff *skb;
|
|
|
|
buf = queue->bufs[bidx];
|
|
buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
|
|
SBAL_EFLAGS_LAST_ENTRY;
|
|
queue->coalesced_frames += buf->frames;
|
|
|
|
if (IS_IQD(card)) {
|
|
skb_queue_walk(&buf->skb_list, skb)
|
|
skb_tx_timestamp(skb);
|
|
}
|
|
}
|
|
|
|
if (IS_IQD(card)) {
|
|
if (card->options.cq == QETH_CQ_ENABLED &&
|
|
!qeth_iqd_is_mcast_queue(card, queue) &&
|
|
count == 1) {
|
|
if (!buf->aob)
|
|
buf->aob = kmem_cache_zalloc(qeth_qaob_cache,
|
|
GFP_ATOMIC);
|
|
if (buf->aob) {
|
|
struct qeth_qaob_priv1 *priv;
|
|
|
|
aob = buf->aob;
|
|
priv = (struct qeth_qaob_priv1 *)&aob->user1;
|
|
priv->state = QETH_QAOB_ISSUED;
|
|
priv->queue_no = queue->queue_no;
|
|
}
|
|
}
|
|
} else {
|
|
if (!queue->do_pack) {
|
|
if ((atomic_read(&queue->used_buffers) >=
|
|
(QETH_HIGH_WATERMARK_PACK -
|
|
QETH_WATERMARK_PACK_FUZZ)) &&
|
|
!atomic_read(&queue->set_pci_flags_count)) {
|
|
/* it's likely that we'll go to packing
|
|
* mode soon */
|
|
atomic_inc(&queue->set_pci_flags_count);
|
|
buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
|
|
}
|
|
} else {
|
|
if (!atomic_read(&queue->set_pci_flags_count)) {
|
|
/*
|
|
* there's no outstanding PCI any more, so we
|
|
* have to request a PCI to be sure the the PCI
|
|
* will wake at some time in the future then we
|
|
* can flush packed buffers that might still be
|
|
* hanging around, which can happen if no
|
|
* further send was requested by the stack
|
|
*/
|
|
atomic_inc(&queue->set_pci_flags_count);
|
|
buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
|
|
}
|
|
}
|
|
}
|
|
|
|
QETH_TXQ_STAT_INC(queue, doorbell);
|
|
rc = qdio_add_bufs_to_output_queue(CARD_DDEV(card), queue->queue_no,
|
|
index, count, aob);
|
|
|
|
switch (rc) {
|
|
case 0:
|
|
case -ENOBUFS:
|
|
/* ignore temporary SIGA errors without busy condition */
|
|
|
|
/* Fake the TX completion interrupt: */
|
|
frames = READ_ONCE(queue->max_coalesced_frames);
|
|
usecs = READ_ONCE(queue->coalesce_usecs);
|
|
|
|
if (frames && queue->coalesced_frames >= frames) {
|
|
napi_schedule(&queue->napi);
|
|
queue->coalesced_frames = 0;
|
|
QETH_TXQ_STAT_INC(queue, coal_frames);
|
|
} else if (qeth_use_tx_irqs(card) &&
|
|
atomic_read(&queue->used_buffers) >= 32) {
|
|
/* Old behaviour carried over from the qdio layer: */
|
|
napi_schedule(&queue->napi);
|
|
QETH_TXQ_STAT_INC(queue, coal_frames);
|
|
} else if (usecs) {
|
|
qeth_tx_arm_timer(queue, usecs);
|
|
}
|
|
|
|
break;
|
|
default:
|
|
QETH_CARD_TEXT(queue->card, 2, "flushbuf");
|
|
QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
|
|
QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
|
|
QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
|
|
QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
|
|
|
|
/* this must not happen under normal circumstances. if it
|
|
* happens something is really wrong -> recover */
|
|
qeth_schedule_recovery(queue->card);
|
|
}
|
|
}
|
|
|
|
static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
|
|
{
|
|
qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count);
|
|
|
|
queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count);
|
|
queue->prev_hdr = NULL;
|
|
queue->bulk_count = 0;
|
|
}
|
|
|
|
static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
|
|
{
|
|
/*
|
|
* check if weed have to switch to non-packing mode or if
|
|
* we have to get a pci flag out on the queue
|
|
*/
|
|
if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
|
|
!atomic_read(&queue->set_pci_flags_count)) {
|
|
unsigned int index, flush_cnt;
|
|
|
|
spin_lock(&queue->lock);
|
|
|
|
index = queue->next_buf_to_fill;
|
|
|
|
flush_cnt = qeth_switch_to_nonpacking_if_needed(queue);
|
|
if (!flush_cnt && !atomic_read(&queue->set_pci_flags_count))
|
|
flush_cnt = qeth_prep_flush_pack_buffer(queue);
|
|
|
|
if (flush_cnt) {
|
|
qeth_flush_buffers(queue, index, flush_cnt);
|
|
QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
|
|
}
|
|
|
|
spin_unlock(&queue->lock);
|
|
}
|
|
}
|
|
|
|
static void qeth_qdio_poll(struct ccw_device *cdev, unsigned long card_ptr)
|
|
{
|
|
struct qeth_card *card = (struct qeth_card *)card_ptr;
|
|
|
|
napi_schedule_irqoff(&card->napi);
|
|
}
|
|
|
|
int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
|
|
{
|
|
int rc;
|
|
|
|
if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
|
|
rc = -1;
|
|
goto out;
|
|
} else {
|
|
if (card->options.cq == cq) {
|
|
rc = 0;
|
|
goto out;
|
|
}
|
|
|
|
qeth_free_qdio_queues(card);
|
|
card->options.cq = cq;
|
|
rc = 0;
|
|
}
|
|
out:
|
|
return rc;
|
|
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_configure_cq);
|
|
|
|
static void qeth_qdio_handle_aob(struct qeth_card *card, struct qaob *aob)
|
|
{
|
|
struct qeth_qaob_priv1 *priv = (struct qeth_qaob_priv1 *)&aob->user1;
|
|
unsigned int queue_no = priv->queue_no;
|
|
|
|
BUILD_BUG_ON(sizeof(*priv) > ARRAY_SIZE(aob->user1));
|
|
|
|
if (xchg(&priv->state, QETH_QAOB_DONE) == QETH_QAOB_PENDING &&
|
|
queue_no < card->qdio.no_out_queues)
|
|
napi_schedule(&card->qdio.out_qs[queue_no]->napi);
|
|
}
|
|
|
|
static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
|
|
unsigned int queue, int first_element,
|
|
int count)
|
|
{
|
|
struct qeth_qdio_q *cq = card->qdio.c_q;
|
|
int i;
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
|
|
QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
|
|
QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
|
|
|
|
if (qdio_err) {
|
|
netif_tx_stop_all_queues(card->dev);
|
|
qeth_schedule_recovery(card);
|
|
return;
|
|
}
|
|
|
|
for (i = first_element; i < first_element + count; ++i) {
|
|
struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)];
|
|
int e = 0;
|
|
|
|
while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
|
|
buffer->element[e].addr) {
|
|
unsigned long phys_aob_addr = buffer->element[e].addr;
|
|
|
|
qeth_qdio_handle_aob(card, phys_to_virt(phys_aob_addr));
|
|
++e;
|
|
}
|
|
qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
|
|
}
|
|
rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), queue,
|
|
cq->next_buf_to_init, count);
|
|
if (rc) {
|
|
dev_warn(&card->gdev->dev,
|
|
"QDIO reported an error, rc=%i\n", rc);
|
|
QETH_CARD_TEXT(card, 2, "qcqherr");
|
|
}
|
|
|
|
cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count);
|
|
}
|
|
|
|
static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
|
|
unsigned int qdio_err, int queue,
|
|
int first_elem, int count,
|
|
unsigned long card_ptr)
|
|
{
|
|
struct qeth_card *card = (struct qeth_card *)card_ptr;
|
|
|
|
QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
|
|
QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
|
|
|
|
if (qdio_err)
|
|
qeth_schedule_recovery(card);
|
|
}
|
|
|
|
static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
|
|
unsigned int qdio_error, int __queue,
|
|
int first_element, int count,
|
|
unsigned long card_ptr)
|
|
{
|
|
struct qeth_card *card = (struct qeth_card *) card_ptr;
|
|
|
|
QETH_CARD_TEXT(card, 2, "achkcond");
|
|
netif_tx_stop_all_queues(card->dev);
|
|
qeth_schedule_recovery(card);
|
|
}
|
|
|
|
/*
|
|
* Note: Function assumes that we have 4 outbound queues.
|
|
*/
|
|
static int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
|
|
{
|
|
struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
|
|
u8 tos;
|
|
|
|
switch (card->qdio.do_prio_queueing) {
|
|
case QETH_PRIO_Q_ING_TOS:
|
|
case QETH_PRIO_Q_ING_PREC:
|
|
switch (vlan_get_protocol(skb)) {
|
|
case htons(ETH_P_IP):
|
|
tos = ipv4_get_dsfield(ip_hdr(skb));
|
|
break;
|
|
case htons(ETH_P_IPV6):
|
|
tos = ipv6_get_dsfield(ipv6_hdr(skb));
|
|
break;
|
|
default:
|
|
return card->qdio.default_out_queue;
|
|
}
|
|
if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
|
|
return ~tos >> 6 & 3;
|
|
if (tos & IPTOS_MINCOST)
|
|
return 3;
|
|
if (tos & IPTOS_RELIABILITY)
|
|
return 2;
|
|
if (tos & IPTOS_THROUGHPUT)
|
|
return 1;
|
|
if (tos & IPTOS_LOWDELAY)
|
|
return 0;
|
|
break;
|
|
case QETH_PRIO_Q_ING_SKB:
|
|
if (skb->priority > 5)
|
|
return 0;
|
|
return ~skb->priority >> 1 & 3;
|
|
case QETH_PRIO_Q_ING_VLAN:
|
|
if (veth->h_vlan_proto == htons(ETH_P_8021Q))
|
|
return ~ntohs(veth->h_vlan_TCI) >>
|
|
(VLAN_PRIO_SHIFT + 1) & 3;
|
|
break;
|
|
case QETH_PRIO_Q_ING_FIXED:
|
|
return card->qdio.default_out_queue;
|
|
default:
|
|
break;
|
|
}
|
|
return card->qdio.default_out_queue;
|
|
}
|
|
|
|
/**
|
|
* qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
|
|
* @skb: SKB address
|
|
*
|
|
* Returns the number of pages, and thus QDIO buffer elements, needed to cover
|
|
* fragmented part of the SKB. Returns zero for linear SKB.
|
|
*/
|
|
static int qeth_get_elements_for_frags(struct sk_buff *skb)
|
|
{
|
|
int cnt, elements = 0;
|
|
|
|
for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
|
|
skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
|
|
|
|
elements += qeth_get_elements_for_range(
|
|
(addr_t)skb_frag_address(frag),
|
|
(addr_t)skb_frag_address(frag) + skb_frag_size(frag));
|
|
}
|
|
return elements;
|
|
}
|
|
|
|
/**
|
|
* qeth_count_elements() - Counts the number of QDIO buffer elements needed
|
|
* to transmit an skb.
|
|
* @skb: the skb to operate on.
|
|
* @data_offset: skip this part of the skb's linear data
|
|
*
|
|
* Returns the number of pages, and thus QDIO buffer elements, needed to map the
|
|
* skb's data (both its linear part and paged fragments).
|
|
*/
|
|
static unsigned int qeth_count_elements(struct sk_buff *skb,
|
|
unsigned int data_offset)
|
|
{
|
|
unsigned int elements = qeth_get_elements_for_frags(skb);
|
|
addr_t end = (addr_t)skb->data + skb_headlen(skb);
|
|
addr_t start = (addr_t)skb->data + data_offset;
|
|
|
|
if (start != end)
|
|
elements += qeth_get_elements_for_range(start, end);
|
|
return elements;
|
|
}
|
|
|
|
#define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
|
|
MAX_TCP_HEADER)
|
|
|
|
/**
|
|
* qeth_add_hw_header() - add a HW header to an skb.
|
|
* @queue: TX queue that the skb will be placed on.
|
|
* @skb: skb that the HW header should be added to.
|
|
* @hdr: double pointer to a qeth_hdr. When returning with >= 0,
|
|
* it contains a valid pointer to a qeth_hdr.
|
|
* @hdr_len: length of the HW header.
|
|
* @proto_len: length of protocol headers that need to be in same page as the
|
|
* HW header.
|
|
* @elements: returns the required number of buffer elements for this skb.
|
|
*
|
|
* Returns the pushed length. If the header can't be pushed on
|
|
* (eg. because it would cross a page boundary), it is allocated from
|
|
* the cache instead and 0 is returned.
|
|
* The number of needed buffer elements is returned in @elements.
|
|
* Error to create the hdr is indicated by returning with < 0.
|
|
*/
|
|
static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
|
|
struct sk_buff *skb, struct qeth_hdr **hdr,
|
|
unsigned int hdr_len, unsigned int proto_len,
|
|
unsigned int *elements)
|
|
{
|
|
gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0);
|
|
const unsigned int contiguous = proto_len ? proto_len : 1;
|
|
const unsigned int max_elements = queue->max_elements;
|
|
unsigned int __elements;
|
|
addr_t start, end;
|
|
bool push_ok;
|
|
int rc;
|
|
|
|
check_layout:
|
|
start = (addr_t)skb->data - hdr_len;
|
|
end = (addr_t)skb->data;
|
|
|
|
if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
|
|
/* Push HW header into same page as first protocol header. */
|
|
push_ok = true;
|
|
/* ... but TSO always needs a separate element for headers: */
|
|
if (skb_is_gso(skb))
|
|
__elements = 1 + qeth_count_elements(skb, proto_len);
|
|
else
|
|
__elements = qeth_count_elements(skb, 0);
|
|
} else if (!proto_len && PAGE_ALIGNED(skb->data)) {
|
|
/* Push HW header into preceding page, flush with skb->data. */
|
|
push_ok = true;
|
|
__elements = 1 + qeth_count_elements(skb, 0);
|
|
} else {
|
|
/* Use header cache, copy protocol headers up. */
|
|
push_ok = false;
|
|
__elements = 1 + qeth_count_elements(skb, proto_len);
|
|
}
|
|
|
|
/* Compress skb to fit into one IO buffer: */
|
|
if (__elements > max_elements) {
|
|
if (!skb_is_nonlinear(skb)) {
|
|
/* Drop it, no easy way of shrinking it further. */
|
|
QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
|
|
max_elements, __elements, skb->len);
|
|
return -E2BIG;
|
|
}
|
|
|
|
rc = skb_linearize(skb);
|
|
if (rc) {
|
|
QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
|
|
return rc;
|
|
}
|
|
|
|
QETH_TXQ_STAT_INC(queue, skbs_linearized);
|
|
/* Linearization changed the layout, re-evaluate: */
|
|
goto check_layout;
|
|
}
|
|
|
|
*elements = __elements;
|
|
/* Add the header: */
|
|
if (push_ok) {
|
|
*hdr = skb_push(skb, hdr_len);
|
|
return hdr_len;
|
|
}
|
|
|
|
/* Fall back to cache element with known-good alignment: */
|
|
if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
|
|
return -E2BIG;
|
|
*hdr = kmem_cache_alloc(qeth_core_header_cache, gfp);
|
|
if (!*hdr)
|
|
return -ENOMEM;
|
|
/* Copy protocol headers behind HW header: */
|
|
skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
|
|
return 0;
|
|
}
|
|
|
|
static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
|
|
struct sk_buff *curr_skb,
|
|
struct qeth_hdr *curr_hdr)
|
|
{
|
|
struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
|
|
struct qeth_hdr *prev_hdr = queue->prev_hdr;
|
|
|
|
if (!prev_hdr)
|
|
return true;
|
|
|
|
/* All packets must have the same target: */
|
|
if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
|
|
struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
|
|
|
|
return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
|
|
eth_hdr(curr_skb)->h_dest) &&
|
|
qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
|
|
}
|
|
|
|
return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
|
|
qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
|
|
}
|
|
|
|
/**
|
|
* qeth_fill_buffer() - map skb into an output buffer
|
|
* @buf: buffer to transport the skb
|
|
* @skb: skb to map into the buffer
|
|
* @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
|
|
* from qeth_core_header_cache.
|
|
* @offset: when mapping the skb, start at skb->data + offset
|
|
* @hd_len: if > 0, build a dedicated header element of this size
|
|
*/
|
|
static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
|
|
struct sk_buff *skb, struct qeth_hdr *hdr,
|
|
unsigned int offset, unsigned int hd_len)
|
|
{
|
|
struct qdio_buffer *buffer = buf->buffer;
|
|
int element = buf->next_element_to_fill;
|
|
int length = skb_headlen(skb) - offset;
|
|
char *data = skb->data + offset;
|
|
unsigned int elem_length, cnt;
|
|
bool is_first_elem = true;
|
|
|
|
__skb_queue_tail(&buf->skb_list, skb);
|
|
|
|
/* build dedicated element for HW Header */
|
|
if (hd_len) {
|
|
is_first_elem = false;
|
|
|
|
buffer->element[element].addr = virt_to_phys(hdr);
|
|
buffer->element[element].length = hd_len;
|
|
buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
|
|
|
|
/* HW header is allocated from cache: */
|
|
if ((void *)hdr != skb->data)
|
|
__set_bit(element, buf->from_kmem_cache);
|
|
/* HW header was pushed and is contiguous with linear part: */
|
|
else if (length > 0 && !PAGE_ALIGNED(data) &&
|
|
(data == (char *)hdr + hd_len))
|
|
buffer->element[element].eflags |=
|
|
SBAL_EFLAGS_CONTIGUOUS;
|
|
|
|
element++;
|
|
}
|
|
|
|
/* map linear part into buffer element(s) */
|
|
while (length > 0) {
|
|
elem_length = min_t(unsigned int, length,
|
|
PAGE_SIZE - offset_in_page(data));
|
|
|
|
buffer->element[element].addr = virt_to_phys(data);
|
|
buffer->element[element].length = elem_length;
|
|
length -= elem_length;
|
|
if (is_first_elem) {
|
|
is_first_elem = false;
|
|
if (length || skb_is_nonlinear(skb))
|
|
/* skb needs additional elements */
|
|
buffer->element[element].eflags =
|
|
SBAL_EFLAGS_FIRST_FRAG;
|
|
else
|
|
buffer->element[element].eflags = 0;
|
|
} else {
|
|
buffer->element[element].eflags =
|
|
SBAL_EFLAGS_MIDDLE_FRAG;
|
|
}
|
|
|
|
data += elem_length;
|
|
element++;
|
|
}
|
|
|
|
/* map page frags into buffer element(s) */
|
|
for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
|
|
skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
|
|
|
|
data = skb_frag_address(frag);
|
|
length = skb_frag_size(frag);
|
|
while (length > 0) {
|
|
elem_length = min_t(unsigned int, length,
|
|
PAGE_SIZE - offset_in_page(data));
|
|
|
|
buffer->element[element].addr = virt_to_phys(data);
|
|
buffer->element[element].length = elem_length;
|
|
buffer->element[element].eflags =
|
|
SBAL_EFLAGS_MIDDLE_FRAG;
|
|
|
|
length -= elem_length;
|
|
data += elem_length;
|
|
element++;
|
|
}
|
|
}
|
|
|
|
if (buffer->element[element - 1].eflags)
|
|
buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
|
|
buf->next_element_to_fill = element;
|
|
return element;
|
|
}
|
|
|
|
static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
|
|
struct sk_buff *skb, unsigned int elements,
|
|
struct qeth_hdr *hdr, unsigned int offset,
|
|
unsigned int hd_len)
|
|
{
|
|
unsigned int bytes = qdisc_pkt_len(skb);
|
|
struct qeth_qdio_out_buffer *buffer;
|
|
unsigned int next_element;
|
|
struct netdev_queue *txq;
|
|
bool stopped = false;
|
|
bool flush;
|
|
|
|
buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)];
|
|
txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
|
|
|
|
/* Just a sanity check, the wake/stop logic should ensure that we always
|
|
* get a free buffer.
|
|
*/
|
|
if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
|
|
return -EBUSY;
|
|
|
|
flush = !qeth_iqd_may_bulk(queue, skb, hdr);
|
|
|
|
if (flush ||
|
|
(buffer->next_element_to_fill + elements > queue->max_elements)) {
|
|
if (buffer->next_element_to_fill > 0) {
|
|
atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
|
|
queue->bulk_count++;
|
|
}
|
|
|
|
if (queue->bulk_count >= queue->bulk_max)
|
|
flush = true;
|
|
|
|
if (flush)
|
|
qeth_flush_queue(queue);
|
|
|
|
buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start +
|
|
queue->bulk_count)];
|
|
|
|
/* Sanity-check again: */
|
|
if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
|
|
return -EBUSY;
|
|
}
|
|
|
|
if (buffer->next_element_to_fill == 0 &&
|
|
atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
|
|
/* If a TX completion happens right _here_ and misses to wake
|
|
* the txq, then our re-check below will catch the race.
|
|
*/
|
|
QETH_TXQ_STAT_INC(queue, stopped);
|
|
netif_tx_stop_queue(txq);
|
|
stopped = true;
|
|
}
|
|
|
|
next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
|
|
buffer->bytes += bytes;
|
|
buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
|
|
queue->prev_hdr = hdr;
|
|
|
|
flush = __netdev_tx_sent_queue(txq, bytes,
|
|
!stopped && netdev_xmit_more());
|
|
|
|
if (flush || next_element >= queue->max_elements) {
|
|
atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
|
|
queue->bulk_count++;
|
|
|
|
if (queue->bulk_count >= queue->bulk_max)
|
|
flush = true;
|
|
|
|
if (flush)
|
|
qeth_flush_queue(queue);
|
|
}
|
|
|
|
if (stopped && !qeth_out_queue_is_full(queue))
|
|
netif_tx_start_queue(txq);
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_do_send_packet(struct qeth_card *card,
|
|
struct qeth_qdio_out_q *queue,
|
|
struct sk_buff *skb, struct qeth_hdr *hdr,
|
|
unsigned int offset, unsigned int hd_len,
|
|
unsigned int elements_needed)
|
|
{
|
|
unsigned int start_index = queue->next_buf_to_fill;
|
|
struct qeth_qdio_out_buffer *buffer;
|
|
unsigned int next_element;
|
|
struct netdev_queue *txq;
|
|
bool stopped = false;
|
|
int flush_count = 0;
|
|
int do_pack = 0;
|
|
int rc = 0;
|
|
|
|
buffer = queue->bufs[queue->next_buf_to_fill];
|
|
|
|
/* Just a sanity check, the wake/stop logic should ensure that we always
|
|
* get a free buffer.
|
|
*/
|
|
if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
|
|
return -EBUSY;
|
|
|
|
txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
|
|
|
|
/* check if we need to switch packing state of this queue */
|
|
qeth_switch_to_packing_if_needed(queue);
|
|
if (queue->do_pack) {
|
|
do_pack = 1;
|
|
/* does packet fit in current buffer? */
|
|
if (buffer->next_element_to_fill + elements_needed >
|
|
queue->max_elements) {
|
|
/* ... no -> set state PRIMED */
|
|
atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
|
|
flush_count++;
|
|
queue->next_buf_to_fill =
|
|
QDIO_BUFNR(queue->next_buf_to_fill + 1);
|
|
buffer = queue->bufs[queue->next_buf_to_fill];
|
|
|
|
/* We stepped forward, so sanity-check again: */
|
|
if (atomic_read(&buffer->state) !=
|
|
QETH_QDIO_BUF_EMPTY) {
|
|
qeth_flush_buffers(queue, start_index,
|
|
flush_count);
|
|
rc = -EBUSY;
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (buffer->next_element_to_fill == 0 &&
|
|
atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
|
|
/* If a TX completion happens right _here_ and misses to wake
|
|
* the txq, then our re-check below will catch the race.
|
|
*/
|
|
QETH_TXQ_STAT_INC(queue, stopped);
|
|
netif_tx_stop_queue(txq);
|
|
stopped = true;
|
|
}
|
|
|
|
next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
|
|
buffer->bytes += qdisc_pkt_len(skb);
|
|
buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
|
|
|
|
if (queue->do_pack)
|
|
QETH_TXQ_STAT_INC(queue, skbs_pack);
|
|
if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
|
|
flush_count++;
|
|
atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
|
|
queue->next_buf_to_fill =
|
|
QDIO_BUFNR(queue->next_buf_to_fill + 1);
|
|
}
|
|
|
|
if (flush_count)
|
|
qeth_flush_buffers(queue, start_index, flush_count);
|
|
|
|
out:
|
|
if (do_pack)
|
|
QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
|
|
|
|
if (stopped && !qeth_out_queue_is_full(queue))
|
|
netif_tx_start_queue(txq);
|
|
return rc;
|
|
}
|
|
|
|
static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
|
|
unsigned int payload_len, struct sk_buff *skb,
|
|
unsigned int proto_len)
|
|
{
|
|
struct qeth_hdr_ext_tso *ext = &hdr->ext;
|
|
|
|
ext->hdr_tot_len = sizeof(*ext);
|
|
ext->imb_hdr_no = 1;
|
|
ext->hdr_type = 1;
|
|
ext->hdr_version = 1;
|
|
ext->hdr_len = 28;
|
|
ext->payload_len = payload_len;
|
|
ext->mss = skb_shinfo(skb)->gso_size;
|
|
ext->dg_hdr_len = proto_len;
|
|
}
|
|
|
|
int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
|
|
struct qeth_qdio_out_q *queue, __be16 proto,
|
|
void (*fill_header)(struct qeth_qdio_out_q *queue,
|
|
struct qeth_hdr *hdr, struct sk_buff *skb,
|
|
__be16 proto, unsigned int data_len))
|
|
{
|
|
unsigned int proto_len, hw_hdr_len;
|
|
unsigned int frame_len = skb->len;
|
|
bool is_tso = skb_is_gso(skb);
|
|
unsigned int data_offset = 0;
|
|
struct qeth_hdr *hdr = NULL;
|
|
unsigned int hd_len = 0;
|
|
unsigned int elements;
|
|
int push_len, rc;
|
|
|
|
if (is_tso) {
|
|
hw_hdr_len = sizeof(struct qeth_hdr_tso);
|
|
proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
|
|
} else {
|
|
hw_hdr_len = sizeof(struct qeth_hdr);
|
|
proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
|
|
}
|
|
|
|
rc = skb_cow_head(skb, hw_hdr_len);
|
|
if (rc)
|
|
return rc;
|
|
|
|
push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
|
|
&elements);
|
|
if (push_len < 0)
|
|
return push_len;
|
|
if (is_tso || !push_len) {
|
|
/* HW header needs its own buffer element. */
|
|
hd_len = hw_hdr_len + proto_len;
|
|
data_offset = push_len + proto_len;
|
|
}
|
|
memset(hdr, 0, hw_hdr_len);
|
|
fill_header(queue, hdr, skb, proto, frame_len);
|
|
if (is_tso)
|
|
qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
|
|
frame_len - proto_len, skb, proto_len);
|
|
|
|
if (IS_IQD(card)) {
|
|
rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
|
|
hd_len);
|
|
} else {
|
|
/* TODO: drop skb_orphan() once TX completion is fast enough */
|
|
skb_orphan(skb);
|
|
spin_lock(&queue->lock);
|
|
rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
|
|
hd_len, elements);
|
|
spin_unlock(&queue->lock);
|
|
}
|
|
|
|
if (rc && !push_len)
|
|
kmem_cache_free(qeth_core_header_cache, hdr);
|
|
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_xmit);
|
|
|
|
static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply, unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
|
|
struct qeth_ipacmd_setadpparms *setparms;
|
|
|
|
QETH_CARD_TEXT(card, 4, "prmadpcb");
|
|
|
|
setparms = &(cmd->data.setadapterparms);
|
|
if (qeth_setadpparms_inspect_rc(cmd)) {
|
|
QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
|
|
setparms->data.mode = SET_PROMISC_MODE_OFF;
|
|
}
|
|
card->info.promisc_mode = setparms->data.mode;
|
|
return (cmd->hdr.return_code) ? -EIO : 0;
|
|
}
|
|
|
|
void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
|
|
{
|
|
enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
|
|
SET_PROMISC_MODE_OFF;
|
|
struct qeth_cmd_buffer *iob;
|
|
struct qeth_ipa_cmd *cmd;
|
|
|
|
QETH_CARD_TEXT(card, 4, "setprom");
|
|
QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
|
|
|
|
iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
|
|
SETADP_DATA_SIZEOF(mode));
|
|
if (!iob)
|
|
return;
|
|
cmd = __ipa_cmd(iob);
|
|
cmd->data.setadapterparms.data.mode = mode;
|
|
qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
|
|
|
|
static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply, unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
|
|
struct qeth_ipacmd_setadpparms *adp_cmd;
|
|
|
|
QETH_CARD_TEXT(card, 4, "chgmaccb");
|
|
if (qeth_setadpparms_inspect_rc(cmd))
|
|
return -EIO;
|
|
|
|
adp_cmd = &cmd->data.setadapterparms;
|
|
if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
|
|
return -EADDRNOTAVAIL;
|
|
|
|
if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
|
|
!(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
|
|
return -EADDRNOTAVAIL;
|
|
|
|
eth_hw_addr_set(card->dev, adp_cmd->data.change_addr.addr);
|
|
return 0;
|
|
}
|
|
|
|
int qeth_setadpparms_change_macaddr(struct qeth_card *card)
|
|
{
|
|
int rc;
|
|
struct qeth_cmd_buffer *iob;
|
|
struct qeth_ipa_cmd *cmd;
|
|
|
|
QETH_CARD_TEXT(card, 4, "chgmac");
|
|
|
|
iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
|
|
SETADP_DATA_SIZEOF(change_addr));
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
cmd = __ipa_cmd(iob);
|
|
cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
|
|
cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
|
|
ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
|
|
card->dev->dev_addr);
|
|
rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
|
|
NULL);
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
|
|
|
|
static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply, unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
|
|
struct qeth_set_access_ctrl *access_ctrl_req;
|
|
|
|
QETH_CARD_TEXT(card, 4, "setaccb");
|
|
|
|
access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
|
|
QETH_CARD_TEXT_(card, 2, "rc=%d",
|
|
cmd->data.setadapterparms.hdr.return_code);
|
|
if (cmd->data.setadapterparms.hdr.return_code !=
|
|
SET_ACCESS_CTRL_RC_SUCCESS)
|
|
QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
|
|
access_ctrl_req->subcmd_code, CARD_DEVID(card),
|
|
cmd->data.setadapterparms.hdr.return_code);
|
|
switch (qeth_setadpparms_inspect_rc(cmd)) {
|
|
case SET_ACCESS_CTRL_RC_SUCCESS:
|
|
if (access_ctrl_req->subcmd_code == ISOLATION_MODE_NONE)
|
|
dev_info(&card->gdev->dev,
|
|
"QDIO data connection isolation is deactivated\n");
|
|
else
|
|
dev_info(&card->gdev->dev,
|
|
"QDIO data connection isolation is activated\n");
|
|
return 0;
|
|
case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
|
|
QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
|
|
CARD_DEVID(card));
|
|
return 0;
|
|
case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
|
|
QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
|
|
CARD_DEVID(card));
|
|
return 0;
|
|
case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
|
|
dev_err(&card->gdev->dev, "Adapter does not "
|
|
"support QDIO data connection isolation\n");
|
|
return -EOPNOTSUPP;
|
|
case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
|
|
dev_err(&card->gdev->dev,
|
|
"Adapter is dedicated. "
|
|
"QDIO data connection isolation not supported\n");
|
|
return -EOPNOTSUPP;
|
|
case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
|
|
dev_err(&card->gdev->dev,
|
|
"TSO does not permit QDIO data connection isolation\n");
|
|
return -EPERM;
|
|
case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
|
|
dev_err(&card->gdev->dev, "The adjacent switch port does not "
|
|
"support reflective relay mode\n");
|
|
return -EOPNOTSUPP;
|
|
case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
|
|
dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
|
|
"enabled at the adjacent switch port");
|
|
return -EREMOTEIO;
|
|
case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
|
|
dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
|
|
"at the adjacent switch failed\n");
|
|
/* benign error while disabling ISOLATION_MODE_FWD */
|
|
return 0;
|
|
default:
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
|
|
enum qeth_ipa_isolation_modes mode)
|
|
{
|
|
int rc;
|
|
struct qeth_cmd_buffer *iob;
|
|
struct qeth_ipa_cmd *cmd;
|
|
struct qeth_set_access_ctrl *access_ctrl_req;
|
|
|
|
QETH_CARD_TEXT(card, 4, "setacctl");
|
|
|
|
if (!qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
|
|
dev_err(&card->gdev->dev,
|
|
"Adapter does not support QDIO data connection isolation\n");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
|
|
SETADP_DATA_SIZEOF(set_access_ctrl));
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
cmd = __ipa_cmd(iob);
|
|
access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
|
|
access_ctrl_req->subcmd_code = mode;
|
|
|
|
rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
|
|
NULL);
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
|
|
QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
|
|
rc, CARD_DEVID(card));
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue)
|
|
{
|
|
struct qeth_card *card;
|
|
|
|
card = dev->ml_priv;
|
|
QETH_CARD_TEXT(card, 4, "txtimeo");
|
|
qeth_schedule_recovery(card);
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_tx_timeout);
|
|
|
|
static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
int rc = 0;
|
|
|
|
switch (regnum) {
|
|
case MII_BMCR: /* Basic mode control register */
|
|
rc = BMCR_FULLDPLX;
|
|
if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
|
|
(card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
|
|
(card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
|
|
rc |= BMCR_SPEED100;
|
|
break;
|
|
case MII_BMSR: /* Basic mode status register */
|
|
rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
|
|
BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
|
|
BMSR_100BASE4;
|
|
break;
|
|
case MII_PHYSID1: /* PHYS ID 1 */
|
|
rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
|
|
dev->dev_addr[2];
|
|
rc = (rc >> 5) & 0xFFFF;
|
|
break;
|
|
case MII_PHYSID2: /* PHYS ID 2 */
|
|
rc = (dev->dev_addr[2] << 10) & 0xFFFF;
|
|
break;
|
|
case MII_ADVERTISE: /* Advertisement control reg */
|
|
rc = ADVERTISE_ALL;
|
|
break;
|
|
case MII_LPA: /* Link partner ability reg */
|
|
rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
|
|
LPA_100BASE4 | LPA_LPACK;
|
|
break;
|
|
case MII_EXPANSION: /* Expansion register */
|
|
break;
|
|
case MII_DCOUNTER: /* disconnect counter */
|
|
break;
|
|
case MII_FCSCOUNTER: /* false carrier counter */
|
|
break;
|
|
case MII_NWAYTEST: /* N-way auto-neg test register */
|
|
break;
|
|
case MII_RERRCOUNTER: /* rx error counter */
|
|
rc = card->stats.rx_length_errors +
|
|
card->stats.rx_frame_errors +
|
|
card->stats.rx_fifo_errors;
|
|
break;
|
|
case MII_SREVISION: /* silicon revision */
|
|
break;
|
|
case MII_RESV1: /* reserved 1 */
|
|
break;
|
|
case MII_LBRERROR: /* loopback, rx, bypass error */
|
|
break;
|
|
case MII_PHYADDR: /* physical address */
|
|
break;
|
|
case MII_RESV2: /* reserved 2 */
|
|
break;
|
|
case MII_TPISTATUS: /* TPI status for 10mbps */
|
|
break;
|
|
case MII_NCONFIG: /* network interface config */
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_snmp_command_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply, unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
|
|
struct qeth_arp_query_info *qinfo = reply->param;
|
|
struct qeth_ipacmd_setadpparms *adp_cmd;
|
|
unsigned int data_len;
|
|
void *snmp_data;
|
|
|
|
QETH_CARD_TEXT(card, 3, "snpcmdcb");
|
|
|
|
if (cmd->hdr.return_code) {
|
|
QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
|
|
return -EIO;
|
|
}
|
|
if (cmd->data.setadapterparms.hdr.return_code) {
|
|
cmd->hdr.return_code =
|
|
cmd->data.setadapterparms.hdr.return_code;
|
|
QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
|
|
return -EIO;
|
|
}
|
|
|
|
adp_cmd = &cmd->data.setadapterparms;
|
|
data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
|
|
if (adp_cmd->hdr.seq_no == 1) {
|
|
snmp_data = &adp_cmd->data.snmp;
|
|
} else {
|
|
snmp_data = &adp_cmd->data.snmp.request;
|
|
data_len -= offsetof(struct qeth_snmp_cmd, request);
|
|
}
|
|
|
|
/* check if there is enough room in userspace */
|
|
if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
|
|
QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
|
|
return -ENOSPC;
|
|
}
|
|
QETH_CARD_TEXT_(card, 4, "snore%i",
|
|
cmd->data.setadapterparms.hdr.used_total);
|
|
QETH_CARD_TEXT_(card, 4, "sseqn%i",
|
|
cmd->data.setadapterparms.hdr.seq_no);
|
|
/*copy entries to user buffer*/
|
|
memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
|
|
qinfo->udata_offset += data_len;
|
|
|
|
if (cmd->data.setadapterparms.hdr.seq_no <
|
|
cmd->data.setadapterparms.hdr.used_total)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
|
|
{
|
|
struct qeth_snmp_ureq __user *ureq;
|
|
struct qeth_cmd_buffer *iob;
|
|
unsigned int req_len;
|
|
struct qeth_arp_query_info qinfo = {0, };
|
|
int rc = 0;
|
|
|
|
QETH_CARD_TEXT(card, 3, "snmpcmd");
|
|
|
|
if (IS_VM_NIC(card))
|
|
return -EOPNOTSUPP;
|
|
|
|
if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
|
|
IS_LAYER3(card))
|
|
return -EOPNOTSUPP;
|
|
|
|
ureq = (struct qeth_snmp_ureq __user *) udata;
|
|
if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
|
|
get_user(req_len, &ureq->hdr.req_len))
|
|
return -EFAULT;
|
|
|
|
/* Sanitize user input, to avoid overflows in iob size calculation: */
|
|
if (req_len > QETH_BUFSIZE)
|
|
return -EINVAL;
|
|
|
|
iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
|
|
&ureq->cmd, req_len)) {
|
|
qeth_put_cmd(iob);
|
|
return -EFAULT;
|
|
}
|
|
|
|
qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
|
|
if (!qinfo.udata) {
|
|
qeth_put_cmd(iob);
|
|
return -ENOMEM;
|
|
}
|
|
qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
|
|
|
|
rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
|
|
if (rc)
|
|
QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
|
|
CARD_DEVID(card), rc);
|
|
else {
|
|
if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
|
|
rc = -EFAULT;
|
|
}
|
|
|
|
kfree(qinfo.udata);
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply,
|
|
unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
|
|
struct qeth_qoat_priv *priv = reply->param;
|
|
int resdatalen;
|
|
|
|
QETH_CARD_TEXT(card, 3, "qoatcb");
|
|
if (qeth_setadpparms_inspect_rc(cmd))
|
|
return -EIO;
|
|
|
|
resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
|
|
|
|
if (resdatalen > (priv->buffer_len - priv->response_len))
|
|
return -ENOSPC;
|
|
|
|
memcpy(priv->buffer + priv->response_len,
|
|
&cmd->data.setadapterparms.hdr, resdatalen);
|
|
priv->response_len += resdatalen;
|
|
|
|
if (cmd->data.setadapterparms.hdr.seq_no <
|
|
cmd->data.setadapterparms.hdr.used_total)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
|
|
{
|
|
int rc = 0;
|
|
struct qeth_cmd_buffer *iob;
|
|
struct qeth_ipa_cmd *cmd;
|
|
struct qeth_query_oat *oat_req;
|
|
struct qeth_query_oat_data oat_data;
|
|
struct qeth_qoat_priv priv;
|
|
void __user *tmp;
|
|
|
|
QETH_CARD_TEXT(card, 3, "qoatcmd");
|
|
|
|
if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&oat_data, udata, sizeof(oat_data)))
|
|
return -EFAULT;
|
|
|
|
priv.buffer_len = oat_data.buffer_len;
|
|
priv.response_len = 0;
|
|
priv.buffer = vzalloc(oat_data.buffer_len);
|
|
if (!priv.buffer)
|
|
return -ENOMEM;
|
|
|
|
iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
|
|
SETADP_DATA_SIZEOF(query_oat));
|
|
if (!iob) {
|
|
rc = -ENOMEM;
|
|
goto out_free;
|
|
}
|
|
cmd = __ipa_cmd(iob);
|
|
oat_req = &cmd->data.setadapterparms.data.query_oat;
|
|
oat_req->subcmd_code = oat_data.command;
|
|
|
|
rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, &priv);
|
|
if (!rc) {
|
|
tmp = is_compat_task() ? compat_ptr(oat_data.ptr) :
|
|
u64_to_user_ptr(oat_data.ptr);
|
|
oat_data.response_len = priv.response_len;
|
|
|
|
if (copy_to_user(tmp, priv.buffer, priv.response_len) ||
|
|
copy_to_user(udata, &oat_data, sizeof(oat_data)))
|
|
rc = -EFAULT;
|
|
}
|
|
|
|
out_free:
|
|
vfree(priv.buffer);
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_query_card_info_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply, unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
|
|
struct qeth_link_info *link_info = reply->param;
|
|
struct qeth_query_card_info *card_info;
|
|
|
|
QETH_CARD_TEXT(card, 2, "qcrdincb");
|
|
if (qeth_setadpparms_inspect_rc(cmd))
|
|
return -EIO;
|
|
|
|
card_info = &cmd->data.setadapterparms.data.card_info;
|
|
netdev_dbg(card->dev,
|
|
"card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
|
|
card_info->card_type, card_info->port_mode,
|
|
card_info->port_speed);
|
|
|
|
switch (card_info->port_mode) {
|
|
case CARD_INFO_PORTM_FULLDUPLEX:
|
|
link_info->duplex = DUPLEX_FULL;
|
|
break;
|
|
case CARD_INFO_PORTM_HALFDUPLEX:
|
|
link_info->duplex = DUPLEX_HALF;
|
|
break;
|
|
default:
|
|
link_info->duplex = DUPLEX_UNKNOWN;
|
|
}
|
|
|
|
switch (card_info->card_type) {
|
|
case CARD_INFO_TYPE_1G_COPPER_A:
|
|
case CARD_INFO_TYPE_1G_COPPER_B:
|
|
link_info->speed = SPEED_1000;
|
|
link_info->port = PORT_TP;
|
|
break;
|
|
case CARD_INFO_TYPE_1G_FIBRE_A:
|
|
case CARD_INFO_TYPE_1G_FIBRE_B:
|
|
link_info->speed = SPEED_1000;
|
|
link_info->port = PORT_FIBRE;
|
|
break;
|
|
case CARD_INFO_TYPE_10G_FIBRE_A:
|
|
case CARD_INFO_TYPE_10G_FIBRE_B:
|
|
link_info->speed = SPEED_10000;
|
|
link_info->port = PORT_FIBRE;
|
|
break;
|
|
default:
|
|
switch (card_info->port_speed) {
|
|
case CARD_INFO_PORTS_10M:
|
|
link_info->speed = SPEED_10;
|
|
break;
|
|
case CARD_INFO_PORTS_100M:
|
|
link_info->speed = SPEED_100;
|
|
break;
|
|
case CARD_INFO_PORTS_1G:
|
|
link_info->speed = SPEED_1000;
|
|
break;
|
|
case CARD_INFO_PORTS_10G:
|
|
link_info->speed = SPEED_10000;
|
|
break;
|
|
case CARD_INFO_PORTS_25G:
|
|
link_info->speed = SPEED_25000;
|
|
break;
|
|
default:
|
|
link_info->speed = SPEED_UNKNOWN;
|
|
}
|
|
|
|
link_info->port = PORT_OTHER;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int qeth_query_card_info(struct qeth_card *card,
|
|
struct qeth_link_info *link_info)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT(card, 2, "qcrdinfo");
|
|
if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
|
|
return -EOPNOTSUPP;
|
|
iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, link_info);
|
|
}
|
|
|
|
static int qeth_init_link_info_oat_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply_priv,
|
|
unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
|
|
struct qeth_link_info *link_info = reply_priv->param;
|
|
struct qeth_query_oat_physical_if *phys_if;
|
|
struct qeth_query_oat_reply *reply;
|
|
|
|
if (qeth_setadpparms_inspect_rc(cmd))
|
|
return -EIO;
|
|
|
|
/* Multi-part reply is unexpected, don't bother: */
|
|
if (cmd->data.setadapterparms.hdr.used_total > 1)
|
|
return -EINVAL;
|
|
|
|
/* Expect the reply to start with phys_if data: */
|
|
reply = &cmd->data.setadapterparms.data.query_oat.reply[0];
|
|
if (reply->type != QETH_QOAT_REPLY_TYPE_PHYS_IF ||
|
|
reply->length < sizeof(*reply))
|
|
return -EINVAL;
|
|
|
|
phys_if = &reply->phys_if;
|
|
|
|
switch (phys_if->speed_duplex) {
|
|
case QETH_QOAT_PHYS_SPEED_10M_HALF:
|
|
link_info->speed = SPEED_10;
|
|
link_info->duplex = DUPLEX_HALF;
|
|
break;
|
|
case QETH_QOAT_PHYS_SPEED_10M_FULL:
|
|
link_info->speed = SPEED_10;
|
|
link_info->duplex = DUPLEX_FULL;
|
|
break;
|
|
case QETH_QOAT_PHYS_SPEED_100M_HALF:
|
|
link_info->speed = SPEED_100;
|
|
link_info->duplex = DUPLEX_HALF;
|
|
break;
|
|
case QETH_QOAT_PHYS_SPEED_100M_FULL:
|
|
link_info->speed = SPEED_100;
|
|
link_info->duplex = DUPLEX_FULL;
|
|
break;
|
|
case QETH_QOAT_PHYS_SPEED_1000M_HALF:
|
|
link_info->speed = SPEED_1000;
|
|
link_info->duplex = DUPLEX_HALF;
|
|
break;
|
|
case QETH_QOAT_PHYS_SPEED_1000M_FULL:
|
|
link_info->speed = SPEED_1000;
|
|
link_info->duplex = DUPLEX_FULL;
|
|
break;
|
|
case QETH_QOAT_PHYS_SPEED_10G_FULL:
|
|
link_info->speed = SPEED_10000;
|
|
link_info->duplex = DUPLEX_FULL;
|
|
break;
|
|
case QETH_QOAT_PHYS_SPEED_25G_FULL:
|
|
link_info->speed = SPEED_25000;
|
|
link_info->duplex = DUPLEX_FULL;
|
|
break;
|
|
case QETH_QOAT_PHYS_SPEED_UNKNOWN:
|
|
default:
|
|
link_info->speed = SPEED_UNKNOWN;
|
|
link_info->duplex = DUPLEX_UNKNOWN;
|
|
break;
|
|
}
|
|
|
|
switch (phys_if->media_type) {
|
|
case QETH_QOAT_PHYS_MEDIA_COPPER:
|
|
link_info->port = PORT_TP;
|
|
link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
|
|
break;
|
|
case QETH_QOAT_PHYS_MEDIA_FIBRE_SHORT:
|
|
link_info->port = PORT_FIBRE;
|
|
link_info->link_mode = QETH_LINK_MODE_FIBRE_SHORT;
|
|
break;
|
|
case QETH_QOAT_PHYS_MEDIA_FIBRE_LONG:
|
|
link_info->port = PORT_FIBRE;
|
|
link_info->link_mode = QETH_LINK_MODE_FIBRE_LONG;
|
|
break;
|
|
default:
|
|
link_info->port = PORT_OTHER;
|
|
link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void qeth_init_link_info(struct qeth_card *card)
|
|
{
|
|
card->info.link_info.duplex = DUPLEX_FULL;
|
|
|
|
if (IS_IQD(card) || IS_VM_NIC(card)) {
|
|
card->info.link_info.speed = SPEED_10000;
|
|
card->info.link_info.port = PORT_FIBRE;
|
|
card->info.link_info.link_mode = QETH_LINK_MODE_FIBRE_SHORT;
|
|
} else {
|
|
switch (card->info.link_type) {
|
|
case QETH_LINK_TYPE_FAST_ETH:
|
|
case QETH_LINK_TYPE_LANE_ETH100:
|
|
card->info.link_info.speed = SPEED_100;
|
|
card->info.link_info.port = PORT_TP;
|
|
break;
|
|
case QETH_LINK_TYPE_GBIT_ETH:
|
|
case QETH_LINK_TYPE_LANE_ETH1000:
|
|
card->info.link_info.speed = SPEED_1000;
|
|
card->info.link_info.port = PORT_FIBRE;
|
|
break;
|
|
case QETH_LINK_TYPE_10GBIT_ETH:
|
|
card->info.link_info.speed = SPEED_10000;
|
|
card->info.link_info.port = PORT_FIBRE;
|
|
break;
|
|
case QETH_LINK_TYPE_25GBIT_ETH:
|
|
card->info.link_info.speed = SPEED_25000;
|
|
card->info.link_info.port = PORT_FIBRE;
|
|
break;
|
|
default:
|
|
dev_info(&card->gdev->dev, "Unknown link type %x\n",
|
|
card->info.link_type);
|
|
card->info.link_info.speed = SPEED_UNKNOWN;
|
|
card->info.link_info.port = PORT_OTHER;
|
|
}
|
|
|
|
card->info.link_info.link_mode = QETH_LINK_MODE_UNKNOWN;
|
|
}
|
|
|
|
/* Get more accurate data via QUERY OAT: */
|
|
if (qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
|
|
struct qeth_link_info link_info;
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
|
|
SETADP_DATA_SIZEOF(query_oat));
|
|
if (iob) {
|
|
struct qeth_ipa_cmd *cmd = __ipa_cmd(iob);
|
|
struct qeth_query_oat *oat_req;
|
|
|
|
oat_req = &cmd->data.setadapterparms.data.query_oat;
|
|
oat_req->subcmd_code = QETH_QOAT_SCOPE_INTERFACE;
|
|
|
|
if (!qeth_send_ipa_cmd(card, iob,
|
|
qeth_init_link_info_oat_cb,
|
|
&link_info)) {
|
|
if (link_info.speed != SPEED_UNKNOWN)
|
|
card->info.link_info.speed = link_info.speed;
|
|
if (link_info.duplex != DUPLEX_UNKNOWN)
|
|
card->info.link_info.duplex = link_info.duplex;
|
|
if (link_info.port != PORT_OTHER)
|
|
card->info.link_info.port = link_info.port;
|
|
if (link_info.link_mode != QETH_LINK_MODE_UNKNOWN)
|
|
card->info.link_info.link_mode = link_info.link_mode;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* qeth_vm_request_mac() - Request a hypervisor-managed MAC address
|
|
* @card: pointer to a qeth_card
|
|
*
|
|
* Returns
|
|
* 0, if a MAC address has been set for the card's netdevice
|
|
* a return code, for various error conditions
|
|
*/
|
|
int qeth_vm_request_mac(struct qeth_card *card)
|
|
{
|
|
struct diag26c_mac_resp *response;
|
|
struct diag26c_mac_req *request;
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 2, "vmreqmac");
|
|
|
|
request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
|
|
response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
|
|
if (!request || !response) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
request->resp_buf_len = sizeof(*response);
|
|
request->resp_version = DIAG26C_VERSION2;
|
|
request->op_code = DIAG26C_GET_MAC;
|
|
request->devno = card->info.ddev_devno;
|
|
|
|
QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
|
|
rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
|
|
QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
|
|
if (rc)
|
|
goto out;
|
|
QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
|
|
|
|
if (request->resp_buf_len < sizeof(*response) ||
|
|
response->version != request->resp_version) {
|
|
rc = -EIO;
|
|
QETH_CARD_TEXT(card, 2, "badresp");
|
|
QETH_CARD_HEX(card, 2, &request->resp_buf_len,
|
|
sizeof(request->resp_buf_len));
|
|
} else if (!is_valid_ether_addr(response->mac)) {
|
|
rc = -EINVAL;
|
|
QETH_CARD_TEXT(card, 2, "badmac");
|
|
QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
|
|
} else {
|
|
eth_hw_addr_set(card->dev, response->mac);
|
|
}
|
|
|
|
out:
|
|
kfree(response);
|
|
kfree(request);
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
|
|
|
|
static void qeth_determine_capabilities(struct qeth_card *card)
|
|
{
|
|
struct qeth_channel *channel = &card->data;
|
|
struct ccw_device *ddev = channel->ccwdev;
|
|
int rc;
|
|
int ddev_offline = 0;
|
|
|
|
QETH_CARD_TEXT(card, 2, "detcapab");
|
|
if (!ddev->online) {
|
|
ddev_offline = 1;
|
|
rc = qeth_start_channel(channel);
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "3err%d", rc);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
rc = qeth_read_conf_data(card);
|
|
if (rc) {
|
|
QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
|
|
CARD_DEVID(card), rc);
|
|
QETH_CARD_TEXT_(card, 2, "5err%d", rc);
|
|
goto out_offline;
|
|
}
|
|
|
|
rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
|
|
if (rc)
|
|
QETH_CARD_TEXT_(card, 2, "6err%d", rc);
|
|
|
|
QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
|
|
QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
|
|
QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
|
|
QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
|
|
QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
|
|
if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
|
|
((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
|
|
((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
|
|
dev_info(&card->gdev->dev,
|
|
"Completion Queueing supported\n");
|
|
} else {
|
|
card->options.cq = QETH_CQ_NOTAVAILABLE;
|
|
}
|
|
|
|
out_offline:
|
|
if (ddev_offline == 1)
|
|
qeth_stop_channel(channel);
|
|
out:
|
|
return;
|
|
}
|
|
|
|
static void qeth_read_ccw_conf_data(struct qeth_card *card)
|
|
{
|
|
struct qeth_card_info *info = &card->info;
|
|
struct ccw_device *cdev = CARD_DDEV(card);
|
|
struct ccw_dev_id dev_id;
|
|
|
|
QETH_CARD_TEXT(card, 2, "ccwconfd");
|
|
ccw_device_get_id(cdev, &dev_id);
|
|
|
|
info->ddev_devno = dev_id.devno;
|
|
info->ids_valid = !ccw_device_get_cssid(cdev, &info->cssid) &&
|
|
!ccw_device_get_iid(cdev, &info->iid) &&
|
|
!ccw_device_get_chid(cdev, 0, &info->chid);
|
|
info->ssid = dev_id.ssid;
|
|
|
|
dev_info(&card->gdev->dev, "CHID: %x CHPID: %x\n",
|
|
info->chid, info->chpid);
|
|
|
|
QETH_CARD_TEXT_(card, 3, "devn%x", info->ddev_devno);
|
|
QETH_CARD_TEXT_(card, 3, "cssid:%x", info->cssid);
|
|
QETH_CARD_TEXT_(card, 3, "iid:%x", info->iid);
|
|
QETH_CARD_TEXT_(card, 3, "ssid:%x", info->ssid);
|
|
QETH_CARD_TEXT_(card, 3, "chpid:%x", info->chpid);
|
|
QETH_CARD_TEXT_(card, 3, "chid:%x", info->chid);
|
|
QETH_CARD_TEXT_(card, 3, "idval%x", info->ids_valid);
|
|
}
|
|
|
|
static int qeth_qdio_establish(struct qeth_card *card)
|
|
{
|
|
struct qdio_buffer **out_sbal_ptrs[QETH_MAX_OUT_QUEUES];
|
|
struct qdio_buffer **in_sbal_ptrs[QETH_MAX_IN_QUEUES];
|
|
struct qeth_qib_parms *qib_parms = NULL;
|
|
struct qdio_initialize init_data;
|
|
unsigned int no_input_qs = 1;
|
|
unsigned int i;
|
|
int rc = 0;
|
|
|
|
QETH_CARD_TEXT(card, 2, "qdioest");
|
|
|
|
if (!IS_IQD(card) && !IS_VM_NIC(card)) {
|
|
qib_parms = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL);
|
|
if (!qib_parms)
|
|
return -ENOMEM;
|
|
|
|
qeth_fill_qib_parms(card, qib_parms);
|
|
}
|
|
|
|
in_sbal_ptrs[0] = card->qdio.in_q->qdio_bufs;
|
|
if (card->options.cq == QETH_CQ_ENABLED) {
|
|
in_sbal_ptrs[1] = card->qdio.c_q->qdio_bufs;
|
|
no_input_qs++;
|
|
}
|
|
|
|
for (i = 0; i < card->qdio.no_out_queues; i++)
|
|
out_sbal_ptrs[i] = card->qdio.out_qs[i]->qdio_bufs;
|
|
|
|
memset(&init_data, 0, sizeof(struct qdio_initialize));
|
|
init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
|
|
QDIO_QETH_QFMT;
|
|
init_data.qib_param_field_format = 0;
|
|
init_data.qib_param_field = (void *)qib_parms;
|
|
init_data.no_input_qs = no_input_qs;
|
|
init_data.no_output_qs = card->qdio.no_out_queues;
|
|
init_data.input_handler = qeth_qdio_input_handler;
|
|
init_data.output_handler = qeth_qdio_output_handler;
|
|
init_data.irq_poll = qeth_qdio_poll;
|
|
init_data.int_parm = (unsigned long) card;
|
|
init_data.input_sbal_addr_array = in_sbal_ptrs;
|
|
init_data.output_sbal_addr_array = out_sbal_ptrs;
|
|
|
|
if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
|
|
QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
|
|
rc = qdio_allocate(CARD_DDEV(card), init_data.no_input_qs,
|
|
init_data.no_output_qs);
|
|
if (rc) {
|
|
atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
|
|
goto out;
|
|
}
|
|
rc = qdio_establish(CARD_DDEV(card), &init_data);
|
|
if (rc) {
|
|
atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
|
|
qdio_free(CARD_DDEV(card));
|
|
}
|
|
}
|
|
|
|
switch (card->options.cq) {
|
|
case QETH_CQ_ENABLED:
|
|
dev_info(&card->gdev->dev, "Completion Queue support enabled");
|
|
break;
|
|
case QETH_CQ_DISABLED:
|
|
dev_info(&card->gdev->dev, "Completion Queue support disabled");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
out:
|
|
kfree(qib_parms);
|
|
return rc;
|
|
}
|
|
|
|
static void qeth_core_free_card(struct qeth_card *card)
|
|
{
|
|
QETH_CARD_TEXT(card, 2, "freecrd");
|
|
|
|
unregister_service_level(&card->qeth_service_level);
|
|
debugfs_remove_recursive(card->debugfs);
|
|
qeth_put_cmd(card->read_cmd);
|
|
destroy_workqueue(card->event_wq);
|
|
dev_set_drvdata(&card->gdev->dev, NULL);
|
|
kfree(card);
|
|
}
|
|
|
|
static void qeth_trace_features(struct qeth_card *card)
|
|
{
|
|
QETH_CARD_TEXT(card, 2, "features");
|
|
QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
|
|
QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
|
|
QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
|
|
QETH_CARD_HEX(card, 2, &card->info.diagass_support,
|
|
sizeof(card->info.diagass_support));
|
|
}
|
|
|
|
static struct ccw_device_id qeth_ids[] = {
|
|
{CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
|
|
.driver_info = QETH_CARD_TYPE_OSD},
|
|
{CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
|
|
.driver_info = QETH_CARD_TYPE_IQD},
|
|
{CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
|
|
.driver_info = QETH_CARD_TYPE_OSM},
|
|
#ifdef CONFIG_QETH_OSX
|
|
{CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
|
|
.driver_info = QETH_CARD_TYPE_OSX},
|
|
#endif
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(ccw, qeth_ids);
|
|
|
|
static struct ccw_driver qeth_ccw_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "qeth",
|
|
},
|
|
.ids = qeth_ids,
|
|
.probe = ccwgroup_probe_ccwdev,
|
|
.remove = ccwgroup_remove_ccwdev,
|
|
};
|
|
|
|
static int qeth_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
|
|
{
|
|
int retries = 3;
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 2, "hrdsetup");
|
|
atomic_set(&card->force_alloc_skb, 0);
|
|
rc = qeth_update_from_chp_desc(card);
|
|
if (rc)
|
|
return rc;
|
|
retry:
|
|
if (retries < 3)
|
|
QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
|
|
CARD_DEVID(card));
|
|
rc = qeth_qdio_clear_card(card, !IS_IQD(card));
|
|
qeth_stop_channel(&card->data);
|
|
qeth_stop_channel(&card->write);
|
|
qeth_stop_channel(&card->read);
|
|
qdio_free(CARD_DDEV(card));
|
|
|
|
rc = qeth_start_channel(&card->read);
|
|
if (rc)
|
|
goto retriable;
|
|
rc = qeth_start_channel(&card->write);
|
|
if (rc)
|
|
goto retriable;
|
|
rc = qeth_start_channel(&card->data);
|
|
if (rc)
|
|
goto retriable;
|
|
retriable:
|
|
if (rc == -ERESTARTSYS) {
|
|
QETH_CARD_TEXT(card, 2, "break1");
|
|
return rc;
|
|
} else if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "1err%d", rc);
|
|
if (--retries < 0)
|
|
goto out;
|
|
else
|
|
goto retry;
|
|
}
|
|
|
|
qeth_determine_capabilities(card);
|
|
qeth_read_ccw_conf_data(card);
|
|
qeth_idx_init(card);
|
|
|
|
rc = qeth_idx_activate_read_channel(card);
|
|
if (rc == -EINTR) {
|
|
QETH_CARD_TEXT(card, 2, "break2");
|
|
return rc;
|
|
} else if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "3err%d", rc);
|
|
if (--retries < 0)
|
|
goto out;
|
|
else
|
|
goto retry;
|
|
}
|
|
|
|
rc = qeth_idx_activate_write_channel(card);
|
|
if (rc == -EINTR) {
|
|
QETH_CARD_TEXT(card, 2, "break3");
|
|
return rc;
|
|
} else if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "4err%d", rc);
|
|
if (--retries < 0)
|
|
goto out;
|
|
else
|
|
goto retry;
|
|
}
|
|
card->read_or_write_problem = 0;
|
|
rc = qeth_mpc_initialize(card);
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "5err%d", rc);
|
|
goto out;
|
|
}
|
|
|
|
rc = qeth_send_startlan(card);
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "6err%d", rc);
|
|
if (rc == -ENETDOWN) {
|
|
dev_warn(&card->gdev->dev, "The LAN is offline\n");
|
|
*carrier_ok = false;
|
|
} else {
|
|
goto out;
|
|
}
|
|
} else {
|
|
*carrier_ok = true;
|
|
}
|
|
|
|
card->options.ipa4.supported = 0;
|
|
card->options.ipa6.supported = 0;
|
|
card->options.adp.supported = 0;
|
|
card->options.sbp.supported_funcs = 0;
|
|
card->info.diagass_support = 0;
|
|
rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
|
|
if (rc == -ENOMEM)
|
|
goto out;
|
|
if (qeth_is_supported(card, IPA_IPV6)) {
|
|
rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
|
|
if (rc == -ENOMEM)
|
|
goto out;
|
|
}
|
|
if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
|
|
rc = qeth_query_setadapterparms(card);
|
|
if (rc < 0) {
|
|
QETH_CARD_TEXT_(card, 2, "7err%d", rc);
|
|
goto out;
|
|
}
|
|
}
|
|
if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
|
|
rc = qeth_query_setdiagass(card);
|
|
if (rc)
|
|
QETH_CARD_TEXT_(card, 2, "8err%d", rc);
|
|
}
|
|
|
|
qeth_trace_features(card);
|
|
|
|
if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
|
|
(card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
|
|
card->info.hwtrap = 0;
|
|
|
|
if (card->options.isolation != ISOLATION_MODE_NONE) {
|
|
rc = qeth_setadpparms_set_access_ctrl(card,
|
|
card->options.isolation);
|
|
if (rc)
|
|
goto out;
|
|
}
|
|
|
|
qeth_init_link_info(card);
|
|
|
|
rc = qeth_init_qdio_queues(card);
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "9err%d", rc);
|
|
goto out;
|
|
}
|
|
|
|
return 0;
|
|
out:
|
|
dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
|
|
"an error on the device\n");
|
|
QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
|
|
CARD_DEVID(card), rc);
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_set_online(struct qeth_card *card,
|
|
const struct qeth_discipline *disc)
|
|
{
|
|
bool carrier_ok;
|
|
int rc;
|
|
|
|
mutex_lock(&card->conf_mutex);
|
|
QETH_CARD_TEXT(card, 2, "setonlin");
|
|
|
|
rc = qeth_hardsetup_card(card, &carrier_ok);
|
|
if (rc) {
|
|
QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
|
|
rc = -ENODEV;
|
|
goto err_hardsetup;
|
|
}
|
|
|
|
qeth_print_status_message(card);
|
|
|
|
if (card->dev->reg_state != NETREG_REGISTERED)
|
|
/* no need for locking / error handling at this early stage: */
|
|
qeth_set_real_num_tx_queues(card, qeth_tx_actual_queues(card));
|
|
|
|
rc = disc->set_online(card, carrier_ok);
|
|
if (rc)
|
|
goto err_online;
|
|
|
|
/* let user_space know that device is online */
|
|
kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
|
|
|
|
mutex_unlock(&card->conf_mutex);
|
|
return 0;
|
|
|
|
err_online:
|
|
err_hardsetup:
|
|
qeth_qdio_clear_card(card, 0);
|
|
qeth_clear_working_pool_list(card);
|
|
qeth_flush_local_addrs(card);
|
|
|
|
qeth_stop_channel(&card->data);
|
|
qeth_stop_channel(&card->write);
|
|
qeth_stop_channel(&card->read);
|
|
qdio_free(CARD_DDEV(card));
|
|
|
|
mutex_unlock(&card->conf_mutex);
|
|
return rc;
|
|
}
|
|
|
|
int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc,
|
|
bool resetting)
|
|
{
|
|
int rc, rc2, rc3;
|
|
|
|
mutex_lock(&card->conf_mutex);
|
|
QETH_CARD_TEXT(card, 3, "setoffl");
|
|
|
|
if ((!resetting && card->info.hwtrap) || card->info.hwtrap == 2) {
|
|
qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
|
|
card->info.hwtrap = 1;
|
|
}
|
|
|
|
/* cancel any stalled cmd that might block the rtnl: */
|
|
qeth_clear_ipacmd_list(card);
|
|
|
|
rtnl_lock();
|
|
card->info.open_when_online = card->dev->flags & IFF_UP;
|
|
dev_close(card->dev);
|
|
netif_device_detach(card->dev);
|
|
netif_carrier_off(card->dev);
|
|
rtnl_unlock();
|
|
|
|
cancel_work_sync(&card->rx_mode_work);
|
|
|
|
disc->set_offline(card);
|
|
|
|
qeth_qdio_clear_card(card, 0);
|
|
qeth_drain_output_queues(card);
|
|
qeth_clear_working_pool_list(card);
|
|
qeth_flush_local_addrs(card);
|
|
card->info.promisc_mode = 0;
|
|
|
|
rc = qeth_stop_channel(&card->data);
|
|
rc2 = qeth_stop_channel(&card->write);
|
|
rc3 = qeth_stop_channel(&card->read);
|
|
if (!rc)
|
|
rc = (rc2) ? rc2 : rc3;
|
|
if (rc)
|
|
QETH_CARD_TEXT_(card, 2, "1err%d", rc);
|
|
qdio_free(CARD_DDEV(card));
|
|
|
|
/* let user_space know that device is offline */
|
|
kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
|
|
|
|
mutex_unlock(&card->conf_mutex);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_set_offline);
|
|
|
|
static int qeth_do_reset(void *data)
|
|
{
|
|
const struct qeth_discipline *disc;
|
|
struct qeth_card *card = data;
|
|
int rc;
|
|
|
|
/* Lock-free, other users will block until we are done. */
|
|
disc = card->discipline;
|
|
|
|
QETH_CARD_TEXT(card, 2, "recover1");
|
|
if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
|
|
return 0;
|
|
QETH_CARD_TEXT(card, 2, "recover2");
|
|
dev_warn(&card->gdev->dev,
|
|
"A recovery process has been started for the device\n");
|
|
|
|
qeth_set_offline(card, disc, true);
|
|
rc = qeth_set_online(card, disc);
|
|
if (!rc) {
|
|
dev_info(&card->gdev->dev,
|
|
"Device successfully recovered!\n");
|
|
} else {
|
|
qeth_set_offline(card, disc, true);
|
|
ccwgroup_set_offline(card->gdev, false);
|
|
dev_warn(&card->gdev->dev,
|
|
"The qeth device driver failed to recover an error on the device\n");
|
|
}
|
|
qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
|
|
qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
|
|
return 0;
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_QETH_L3)
|
|
static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
|
|
struct qeth_hdr *hdr)
|
|
{
|
|
struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
|
|
struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
|
|
struct net_device *dev = skb->dev;
|
|
|
|
if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
|
|
dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
|
|
"FAKELL", skb->len);
|
|
return;
|
|
}
|
|
|
|
if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) {
|
|
u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
|
|
ETH_P_IP;
|
|
unsigned char tg_addr[ETH_ALEN];
|
|
|
|
skb_reset_network_header(skb);
|
|
switch (l3_hdr->flags & QETH_HDR_CAST_MASK) {
|
|
case QETH_CAST_MULTICAST:
|
|
if (prot == ETH_P_IP)
|
|
ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
|
|
else
|
|
ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
|
|
QETH_CARD_STAT_INC(card, rx_multicast);
|
|
break;
|
|
case QETH_CAST_BROADCAST:
|
|
ether_addr_copy(tg_addr, dev->broadcast);
|
|
QETH_CARD_STAT_INC(card, rx_multicast);
|
|
break;
|
|
default:
|
|
if (card->options.sniffer)
|
|
skb->pkt_type = PACKET_OTHERHOST;
|
|
ether_addr_copy(tg_addr, dev->dev_addr);
|
|
}
|
|
|
|
if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
|
|
dev_hard_header(skb, dev, prot, tg_addr,
|
|
&l3_hdr->next_hop.rx.src_mac, skb->len);
|
|
else
|
|
dev_hard_header(skb, dev, prot, tg_addr, "FAKELL",
|
|
skb->len);
|
|
}
|
|
|
|
/* copy VLAN tag from hdr into skb */
|
|
if (!card->options.sniffer &&
|
|
(l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
|
|
QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
|
|
u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
|
|
l3_hdr->vlan_id :
|
|
l3_hdr->next_hop.rx.vlan_id;
|
|
|
|
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
|
|
bool uses_frags, bool is_cso)
|
|
{
|
|
struct napi_struct *napi = &card->napi;
|
|
|
|
if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) {
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
QETH_CARD_STAT_INC(card, rx_skb_csum);
|
|
} else {
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
}
|
|
|
|
QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
|
|
QETH_CARD_STAT_INC(card, rx_packets);
|
|
if (skb_is_nonlinear(skb)) {
|
|
QETH_CARD_STAT_INC(card, rx_sg_skbs);
|
|
QETH_CARD_STAT_ADD(card, rx_sg_frags,
|
|
skb_shinfo(skb)->nr_frags);
|
|
}
|
|
|
|
if (uses_frags) {
|
|
napi_gro_frags(napi);
|
|
} else {
|
|
skb->protocol = eth_type_trans(skb, skb->dev);
|
|
napi_gro_receive(napi, skb);
|
|
}
|
|
}
|
|
|
|
static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len)
|
|
{
|
|
struct page *page = virt_to_page(data);
|
|
unsigned int next_frag;
|
|
|
|
next_frag = skb_shinfo(skb)->nr_frags;
|
|
get_page(page);
|
|
skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len,
|
|
data_len);
|
|
}
|
|
|
|
static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
|
|
{
|
|
return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
|
|
}
|
|
|
|
static int qeth_extract_skb(struct qeth_card *card,
|
|
struct qeth_qdio_buffer *qethbuffer, u8 *element_no,
|
|
int *__offset)
|
|
{
|
|
struct qeth_priv *priv = netdev_priv(card->dev);
|
|
struct qdio_buffer *buffer = qethbuffer->buffer;
|
|
struct napi_struct *napi = &card->napi;
|
|
struct qdio_buffer_element *element;
|
|
unsigned int linear_len = 0;
|
|
bool uses_frags = false;
|
|
int offset = *__offset;
|
|
bool use_rx_sg = false;
|
|
unsigned int headroom;
|
|
struct qeth_hdr *hdr;
|
|
struct sk_buff *skb;
|
|
int skb_len = 0;
|
|
bool is_cso;
|
|
|
|
element = &buffer->element[*element_no];
|
|
|
|
next_packet:
|
|
/* qeth_hdr must not cross element boundaries */
|
|
while (element->length < offset + sizeof(struct qeth_hdr)) {
|
|
if (qeth_is_last_sbale(element))
|
|
return -ENODATA;
|
|
element++;
|
|
offset = 0;
|
|
}
|
|
|
|
hdr = phys_to_virt(element->addr) + offset;
|
|
offset += sizeof(*hdr);
|
|
skb = NULL;
|
|
|
|
switch (hdr->hdr.l2.id) {
|
|
case QETH_HEADER_TYPE_LAYER2:
|
|
skb_len = hdr->hdr.l2.pkt_length;
|
|
is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ;
|
|
|
|
linear_len = ETH_HLEN;
|
|
headroom = 0;
|
|
break;
|
|
case QETH_HEADER_TYPE_LAYER3:
|
|
skb_len = hdr->hdr.l3.length;
|
|
is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ;
|
|
|
|
if (!IS_LAYER3(card)) {
|
|
QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
|
|
goto walk_packet;
|
|
}
|
|
|
|
if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
|
|
linear_len = ETH_HLEN;
|
|
headroom = 0;
|
|
break;
|
|
}
|
|
|
|
if (hdr->hdr.l3.flags & QETH_HDR_IPV6)
|
|
linear_len = sizeof(struct ipv6hdr);
|
|
else
|
|
linear_len = sizeof(struct iphdr);
|
|
headroom = ETH_HLEN;
|
|
break;
|
|
default:
|
|
if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL)
|
|
QETH_CARD_STAT_INC(card, rx_frame_errors);
|
|
else
|
|
QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
|
|
|
|
/* Can't determine packet length, drop the whole buffer. */
|
|
return -EPROTONOSUPPORT;
|
|
}
|
|
|
|
if (skb_len < linear_len) {
|
|
QETH_CARD_STAT_INC(card, rx_dropped_runt);
|
|
goto walk_packet;
|
|
}
|
|
|
|
use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
|
|
(skb_len > READ_ONCE(priv->rx_copybreak) &&
|
|
!atomic_read(&card->force_alloc_skb));
|
|
|
|
if (use_rx_sg) {
|
|
/* QETH_CQ_ENABLED only: */
|
|
if (qethbuffer->rx_skb &&
|
|
skb_tailroom(qethbuffer->rx_skb) >= linear_len + headroom) {
|
|
skb = qethbuffer->rx_skb;
|
|
qethbuffer->rx_skb = NULL;
|
|
goto use_skb;
|
|
}
|
|
|
|
skb = napi_get_frags(napi);
|
|
if (!skb) {
|
|
/* -ENOMEM, no point in falling back further. */
|
|
QETH_CARD_STAT_INC(card, rx_dropped_nomem);
|
|
goto walk_packet;
|
|
}
|
|
|
|
if (skb_tailroom(skb) >= linear_len + headroom) {
|
|
uses_frags = true;
|
|
goto use_skb;
|
|
}
|
|
|
|
netdev_info_once(card->dev,
|
|
"Insufficient linear space in NAPI frags skb, need %u but have %u\n",
|
|
linear_len + headroom, skb_tailroom(skb));
|
|
/* Shouldn't happen. Don't optimize, fall back to linear skb. */
|
|
}
|
|
|
|
linear_len = skb_len;
|
|
skb = napi_alloc_skb(napi, linear_len + headroom);
|
|
if (!skb) {
|
|
QETH_CARD_STAT_INC(card, rx_dropped_nomem);
|
|
goto walk_packet;
|
|
}
|
|
|
|
use_skb:
|
|
if (headroom)
|
|
skb_reserve(skb, headroom);
|
|
walk_packet:
|
|
while (skb_len) {
|
|
int data_len = min(skb_len, (int)(element->length - offset));
|
|
char *data = phys_to_virt(element->addr) + offset;
|
|
|
|
skb_len -= data_len;
|
|
offset += data_len;
|
|
|
|
/* Extract data from current element: */
|
|
if (skb && data_len) {
|
|
if (linear_len) {
|
|
unsigned int copy_len;
|
|
|
|
copy_len = min_t(unsigned int, linear_len,
|
|
data_len);
|
|
|
|
skb_put_data(skb, data, copy_len);
|
|
linear_len -= copy_len;
|
|
data_len -= copy_len;
|
|
data += copy_len;
|
|
}
|
|
|
|
if (data_len)
|
|
qeth_create_skb_frag(skb, data, data_len);
|
|
}
|
|
|
|
/* Step forward to next element: */
|
|
if (skb_len) {
|
|
if (qeth_is_last_sbale(element)) {
|
|
QETH_CARD_TEXT(card, 4, "unexeob");
|
|
QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
|
|
if (skb) {
|
|
if (uses_frags)
|
|
napi_free_frags(napi);
|
|
else
|
|
kfree_skb(skb);
|
|
QETH_CARD_STAT_INC(card,
|
|
rx_length_errors);
|
|
}
|
|
return -EMSGSIZE;
|
|
}
|
|
element++;
|
|
offset = 0;
|
|
}
|
|
}
|
|
|
|
/* This packet was skipped, go get another one: */
|
|
if (!skb)
|
|
goto next_packet;
|
|
|
|
*element_no = element - &buffer->element[0];
|
|
*__offset = offset;
|
|
|
|
#if IS_ENABLED(CONFIG_QETH_L3)
|
|
if (hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER3)
|
|
qeth_l3_rebuild_skb(card, skb, hdr);
|
|
#endif
|
|
|
|
qeth_receive_skb(card, skb, uses_frags, is_cso);
|
|
return 0;
|
|
}
|
|
|
|
static unsigned int qeth_extract_skbs(struct qeth_card *card, int budget,
|
|
struct qeth_qdio_buffer *buf, bool *done)
|
|
{
|
|
unsigned int work_done = 0;
|
|
|
|
while (budget) {
|
|
if (qeth_extract_skb(card, buf, &card->rx.buf_element,
|
|
&card->rx.e_offset)) {
|
|
*done = true;
|
|
break;
|
|
}
|
|
|
|
work_done++;
|
|
budget--;
|
|
}
|
|
|
|
return work_done;
|
|
}
|
|
|
|
static unsigned int qeth_rx_poll(struct qeth_card *card, int budget)
|
|
{
|
|
struct qeth_rx *ctx = &card->rx;
|
|
unsigned int work_done = 0;
|
|
|
|
while (budget > 0) {
|
|
struct qeth_qdio_buffer *buffer;
|
|
unsigned int skbs_done = 0;
|
|
bool done = false;
|
|
|
|
/* Fetch completed RX buffers: */
|
|
if (!card->rx.b_count) {
|
|
card->rx.qdio_err = 0;
|
|
card->rx.b_count =
|
|
qdio_inspect_input_queue(CARD_DDEV(card), 0,
|
|
&card->rx.b_index,
|
|
&card->rx.qdio_err);
|
|
if (card->rx.b_count <= 0) {
|
|
card->rx.b_count = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Process one completed RX buffer: */
|
|
buffer = &card->qdio.in_q->bufs[card->rx.b_index];
|
|
if (!(card->rx.qdio_err &&
|
|
qeth_check_qdio_errors(card, buffer->buffer,
|
|
card->rx.qdio_err, "qinerr")))
|
|
skbs_done = qeth_extract_skbs(card, budget, buffer,
|
|
&done);
|
|
else
|
|
done = true;
|
|
|
|
work_done += skbs_done;
|
|
budget -= skbs_done;
|
|
|
|
if (done) {
|
|
QETH_CARD_STAT_INC(card, rx_bufs);
|
|
qeth_put_buffer_pool_entry(card, buffer->pool_entry);
|
|
buffer->pool_entry = NULL;
|
|
card->rx.b_count--;
|
|
ctx->bufs_refill++;
|
|
ctx->bufs_refill -= qeth_rx_refill_queue(card,
|
|
ctx->bufs_refill);
|
|
|
|
/* Step forward to next buffer: */
|
|
card->rx.b_index = QDIO_BUFNR(card->rx.b_index + 1);
|
|
card->rx.buf_element = 0;
|
|
card->rx.e_offset = 0;
|
|
}
|
|
}
|
|
|
|
return work_done;
|
|
}
|
|
|
|
static void qeth_cq_poll(struct qeth_card *card)
|
|
{
|
|
unsigned int work_done = 0;
|
|
|
|
while (work_done < QDIO_MAX_BUFFERS_PER_Q) {
|
|
unsigned int start, error;
|
|
int completed;
|
|
|
|
completed = qdio_inspect_input_queue(CARD_DDEV(card), 1, &start,
|
|
&error);
|
|
if (completed <= 0)
|
|
return;
|
|
|
|
qeth_qdio_cq_handler(card, error, 1, start, completed);
|
|
work_done += completed;
|
|
}
|
|
}
|
|
|
|
int qeth_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct qeth_card *card = container_of(napi, struct qeth_card, napi);
|
|
unsigned int work_done;
|
|
|
|
work_done = qeth_rx_poll(card, budget);
|
|
|
|
if (qeth_use_tx_irqs(card)) {
|
|
struct qeth_qdio_out_q *queue;
|
|
unsigned int i;
|
|
|
|
qeth_for_each_output_queue(card, queue, i) {
|
|
if (!qeth_out_queue_is_empty(queue))
|
|
napi_schedule(&queue->napi);
|
|
}
|
|
}
|
|
|
|
if (card->options.cq == QETH_CQ_ENABLED)
|
|
qeth_cq_poll(card);
|
|
|
|
if (budget) {
|
|
struct qeth_rx *ctx = &card->rx;
|
|
|
|
/* Process any substantial refill backlog: */
|
|
ctx->bufs_refill -= qeth_rx_refill_queue(card, ctx->bufs_refill);
|
|
|
|
/* Exhausted the RX budget. Keep IRQ disabled, we get called again. */
|
|
if (work_done >= budget)
|
|
return work_done;
|
|
}
|
|
|
|
if (napi_complete_done(napi, work_done) &&
|
|
qdio_start_irq(CARD_DDEV(card)))
|
|
napi_schedule(napi);
|
|
|
|
return work_done;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_poll);
|
|
|
|
static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
|
|
unsigned int bidx, unsigned int qdio_error,
|
|
int budget)
|
|
{
|
|
struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
|
|
u8 sflags = buffer->buffer->element[15].sflags;
|
|
struct qeth_card *card = queue->card;
|
|
bool error = !!qdio_error;
|
|
|
|
if (qdio_error == QDIO_ERROR_SLSB_PENDING) {
|
|
struct qaob *aob = buffer->aob;
|
|
struct qeth_qaob_priv1 *priv;
|
|
enum iucv_tx_notify notify;
|
|
|
|
if (!aob) {
|
|
netdev_WARN_ONCE(card->dev,
|
|
"Pending TX buffer %#x without QAOB on TX queue %u\n",
|
|
bidx, queue->queue_no);
|
|
qeth_schedule_recovery(card);
|
|
return;
|
|
}
|
|
|
|
QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
|
|
|
|
priv = (struct qeth_qaob_priv1 *)&aob->user1;
|
|
/* QAOB hasn't completed yet: */
|
|
if (xchg(&priv->state, QETH_QAOB_PENDING) != QETH_QAOB_DONE) {
|
|
qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
|
|
|
|
/* Prepare the queue slot for immediate re-use: */
|
|
qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
|
|
if (qeth_alloc_out_buf(queue, bidx, GFP_ATOMIC)) {
|
|
QETH_CARD_TEXT(card, 2, "outofbuf");
|
|
qeth_schedule_recovery(card);
|
|
}
|
|
|
|
list_add(&buffer->list_entry, &queue->pending_bufs);
|
|
/* Skip clearing the buffer: */
|
|
return;
|
|
}
|
|
|
|
/* QAOB already completed: */
|
|
notify = qeth_compute_cq_notification(aob->aorc, 0);
|
|
qeth_notify_skbs(queue, buffer, notify);
|
|
error = !!aob->aorc;
|
|
memset(aob, 0, sizeof(*aob));
|
|
} else if (card->options.cq == QETH_CQ_ENABLED) {
|
|
qeth_notify_skbs(queue, buffer,
|
|
qeth_compute_cq_notification(sflags, 0));
|
|
}
|
|
|
|
qeth_clear_output_buffer(queue, buffer, error, budget);
|
|
}
|
|
|
|
static int qeth_tx_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
|
|
unsigned int queue_no = queue->queue_no;
|
|
struct qeth_card *card = queue->card;
|
|
struct net_device *dev = card->dev;
|
|
unsigned int work_done = 0;
|
|
struct netdev_queue *txq;
|
|
|
|
if (IS_IQD(card))
|
|
txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
|
|
else
|
|
txq = netdev_get_tx_queue(dev, queue_no);
|
|
|
|
while (1) {
|
|
unsigned int start, error, i;
|
|
unsigned int packets = 0;
|
|
unsigned int bytes = 0;
|
|
int completed;
|
|
|
|
qeth_tx_complete_pending_bufs(card, queue, false, budget);
|
|
|
|
if (qeth_out_queue_is_empty(queue)) {
|
|
napi_complete(napi);
|
|
return 0;
|
|
}
|
|
|
|
/* Give the CPU a breather: */
|
|
if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
|
|
QETH_TXQ_STAT_INC(queue, completion_yield);
|
|
if (napi_complete_done(napi, 0))
|
|
napi_schedule(napi);
|
|
return 0;
|
|
}
|
|
|
|
completed = qdio_inspect_output_queue(CARD_DDEV(card), queue_no,
|
|
&start, &error);
|
|
if (completed <= 0) {
|
|
/* Ensure we see TX completion for pending work: */
|
|
if (napi_complete_done(napi, 0) &&
|
|
!atomic_read(&queue->set_pci_flags_count))
|
|
qeth_tx_arm_timer(queue, queue->rescan_usecs);
|
|
return 0;
|
|
}
|
|
|
|
for (i = start; i < start + completed; i++) {
|
|
struct qeth_qdio_out_buffer *buffer;
|
|
unsigned int bidx = QDIO_BUFNR(i);
|
|
|
|
buffer = queue->bufs[bidx];
|
|
packets += buffer->frames;
|
|
bytes += buffer->bytes;
|
|
|
|
qeth_handle_send_error(card, buffer, error);
|
|
if (IS_IQD(card))
|
|
qeth_iqd_tx_complete(queue, bidx, error, budget);
|
|
else
|
|
qeth_clear_output_buffer(queue, buffer, error,
|
|
budget);
|
|
}
|
|
|
|
atomic_sub(completed, &queue->used_buffers);
|
|
work_done += completed;
|
|
if (IS_IQD(card))
|
|
netdev_tx_completed_queue(txq, packets, bytes);
|
|
else
|
|
qeth_check_outbound_queue(queue);
|
|
|
|
/* xmit may have observed the full-condition, but not yet
|
|
* stopped the txq. In which case the code below won't trigger.
|
|
* So before returning, xmit will re-check the txq's fill level
|
|
* and wake it up if needed.
|
|
*/
|
|
if (netif_tx_queue_stopped(txq) &&
|
|
!qeth_out_queue_is_full(queue))
|
|
netif_tx_wake_queue(txq);
|
|
}
|
|
}
|
|
|
|
static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
|
|
{
|
|
if (!cmd->hdr.return_code)
|
|
cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
|
|
return cmd->hdr.return_code;
|
|
}
|
|
|
|
static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply,
|
|
unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
|
|
struct qeth_ipa_caps *caps = reply->param;
|
|
|
|
if (qeth_setassparms_inspect_rc(cmd))
|
|
return -EIO;
|
|
|
|
caps->supported = cmd->data.setassparms.data.caps.supported;
|
|
caps->enabled = cmd->data.setassparms.data.caps.enabled;
|
|
return 0;
|
|
}
|
|
|
|
int qeth_setassparms_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply, unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
|
|
|
|
QETH_CARD_TEXT(card, 4, "defadpcb");
|
|
|
|
if (cmd->hdr.return_code)
|
|
return -EIO;
|
|
|
|
cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
|
|
if (cmd->hdr.prot_version == QETH_PROT_IPV4)
|
|
card->options.ipa4.enabled = cmd->hdr.assists.enabled;
|
|
if (cmd->hdr.prot_version == QETH_PROT_IPV6)
|
|
card->options.ipa6.enabled = cmd->hdr.assists.enabled;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
|
|
|
|
struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
|
|
enum qeth_ipa_funcs ipa_func,
|
|
u16 cmd_code,
|
|
unsigned int data_length,
|
|
enum qeth_prot_versions prot)
|
|
{
|
|
struct qeth_ipacmd_setassparms *setassparms;
|
|
struct qeth_ipacmd_setassparms_hdr *hdr;
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT(card, 4, "getasscm");
|
|
iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
|
|
data_length +
|
|
offsetof(struct qeth_ipacmd_setassparms,
|
|
data));
|
|
if (!iob)
|
|
return NULL;
|
|
|
|
setassparms = &__ipa_cmd(iob)->data.setassparms;
|
|
setassparms->assist_no = ipa_func;
|
|
|
|
hdr = &setassparms->hdr;
|
|
hdr->length = sizeof(*hdr) + data_length;
|
|
hdr->command_code = cmd_code;
|
|
return iob;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
|
|
|
|
int qeth_send_simple_setassparms_prot(struct qeth_card *card,
|
|
enum qeth_ipa_funcs ipa_func,
|
|
u16 cmd_code, u32 *data,
|
|
enum qeth_prot_versions prot)
|
|
{
|
|
unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
|
|
iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
if (data)
|
|
__ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
|
|
return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
|
|
|
|
static void qeth_unregister_dbf_views(void)
|
|
{
|
|
int x;
|
|
|
|
for (x = 0; x < QETH_DBF_INFOS; x++) {
|
|
debug_unregister(qeth_dbf[x].id);
|
|
qeth_dbf[x].id = NULL;
|
|
}
|
|
}
|
|
|
|
void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
|
|
{
|
|
char dbf_txt_buf[32];
|
|
va_list args;
|
|
|
|
if (!debug_level_enabled(id, level))
|
|
return;
|
|
va_start(args, fmt);
|
|
vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
|
|
va_end(args);
|
|
debug_text_event(id, level, dbf_txt_buf);
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
|
|
|
|
static int qeth_register_dbf_views(void)
|
|
{
|
|
int ret;
|
|
int x;
|
|
|
|
for (x = 0; x < QETH_DBF_INFOS; x++) {
|
|
/* register the areas */
|
|
qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
|
|
qeth_dbf[x].pages,
|
|
qeth_dbf[x].areas,
|
|
qeth_dbf[x].len);
|
|
if (qeth_dbf[x].id == NULL) {
|
|
qeth_unregister_dbf_views();
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* register a view */
|
|
ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
|
|
if (ret) {
|
|
qeth_unregister_dbf_views();
|
|
return ret;
|
|
}
|
|
|
|
/* set a passing level */
|
|
debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */
|
|
|
|
int qeth_setup_discipline(struct qeth_card *card,
|
|
enum qeth_discipline_id discipline)
|
|
{
|
|
int rc;
|
|
|
|
mutex_lock(&qeth_mod_mutex);
|
|
switch (discipline) {
|
|
case QETH_DISCIPLINE_LAYER3:
|
|
card->discipline = try_then_request_module(
|
|
symbol_get(qeth_l3_discipline), "qeth_l3");
|
|
break;
|
|
case QETH_DISCIPLINE_LAYER2:
|
|
card->discipline = try_then_request_module(
|
|
symbol_get(qeth_l2_discipline), "qeth_l2");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
mutex_unlock(&qeth_mod_mutex);
|
|
|
|
if (!card->discipline) {
|
|
dev_err(&card->gdev->dev, "There is no kernel module to "
|
|
"support discipline %d\n", discipline);
|
|
return -EINVAL;
|
|
}
|
|
|
|
rc = card->discipline->setup(card->gdev);
|
|
if (rc) {
|
|
if (discipline == QETH_DISCIPLINE_LAYER2)
|
|
symbol_put(qeth_l2_discipline);
|
|
else
|
|
symbol_put(qeth_l3_discipline);
|
|
card->discipline = NULL;
|
|
|
|
return rc;
|
|
}
|
|
|
|
card->options.layer = discipline;
|
|
return 0;
|
|
}
|
|
|
|
void qeth_remove_discipline(struct qeth_card *card)
|
|
{
|
|
card->discipline->remove(card->gdev);
|
|
|
|
if (IS_LAYER2(card))
|
|
symbol_put(qeth_l2_discipline);
|
|
else
|
|
symbol_put(qeth_l3_discipline);
|
|
card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
|
|
card->discipline = NULL;
|
|
}
|
|
|
|
static const struct device_type qeth_generic_devtype = {
|
|
.name = "qeth_generic",
|
|
};
|
|
|
|
#define DBF_NAME_LEN 20
|
|
|
|
struct qeth_dbf_entry {
|
|
char dbf_name[DBF_NAME_LEN];
|
|
debug_info_t *dbf_info;
|
|
struct list_head dbf_list;
|
|
};
|
|
|
|
static LIST_HEAD(qeth_dbf_list);
|
|
static DEFINE_MUTEX(qeth_dbf_list_mutex);
|
|
|
|
static debug_info_t *qeth_get_dbf_entry(char *name)
|
|
{
|
|
struct qeth_dbf_entry *entry;
|
|
debug_info_t *rc = NULL;
|
|
|
|
mutex_lock(&qeth_dbf_list_mutex);
|
|
list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
|
|
if (strcmp(entry->dbf_name, name) == 0) {
|
|
rc = entry->dbf_info;
|
|
break;
|
|
}
|
|
}
|
|
mutex_unlock(&qeth_dbf_list_mutex);
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
|
|
{
|
|
struct qeth_dbf_entry *new_entry;
|
|
|
|
card->debug = debug_register(name, 2, 1, 8);
|
|
if (!card->debug) {
|
|
QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
|
|
goto err;
|
|
}
|
|
if (debug_register_view(card->debug, &debug_hex_ascii_view))
|
|
goto err_dbg;
|
|
new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
|
|
if (!new_entry)
|
|
goto err_dbg;
|
|
strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
|
|
new_entry->dbf_info = card->debug;
|
|
mutex_lock(&qeth_dbf_list_mutex);
|
|
list_add(&new_entry->dbf_list, &qeth_dbf_list);
|
|
mutex_unlock(&qeth_dbf_list_mutex);
|
|
|
|
return 0;
|
|
|
|
err_dbg:
|
|
debug_unregister(card->debug);
|
|
err:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static void qeth_clear_dbf_list(void)
|
|
{
|
|
struct qeth_dbf_entry *entry, *tmp;
|
|
|
|
mutex_lock(&qeth_dbf_list_mutex);
|
|
list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
|
|
list_del(&entry->dbf_list);
|
|
debug_unregister(entry->dbf_info);
|
|
kfree(entry);
|
|
}
|
|
mutex_unlock(&qeth_dbf_list_mutex);
|
|
}
|
|
|
|
static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
|
|
{
|
|
struct net_device *dev;
|
|
struct qeth_priv *priv;
|
|
|
|
switch (card->info.type) {
|
|
case QETH_CARD_TYPE_IQD:
|
|
dev = alloc_netdev_mqs(sizeof(*priv), "hsi%d", NET_NAME_UNKNOWN,
|
|
ether_setup, QETH_MAX_OUT_QUEUES, 1);
|
|
break;
|
|
case QETH_CARD_TYPE_OSM:
|
|
dev = alloc_etherdev(sizeof(*priv));
|
|
break;
|
|
default:
|
|
dev = alloc_etherdev_mqs(sizeof(*priv), QETH_MAX_OUT_QUEUES, 1);
|
|
}
|
|
|
|
if (!dev)
|
|
return NULL;
|
|
|
|
priv = netdev_priv(dev);
|
|
priv->rx_copybreak = QETH_RX_COPYBREAK;
|
|
priv->tx_wanted_queues = IS_IQD(card) ? QETH_IQD_MIN_TXQ : 1;
|
|
|
|
dev->ml_priv = card;
|
|
dev->watchdog_timeo = QETH_TX_TIMEOUT;
|
|
dev->min_mtu = 576;
|
|
/* initialized when device first goes online: */
|
|
dev->max_mtu = 0;
|
|
dev->mtu = 0;
|
|
SET_NETDEV_DEV(dev, &card->gdev->dev);
|
|
netif_carrier_off(dev);
|
|
|
|
dev->ethtool_ops = &qeth_ethtool_ops;
|
|
dev->priv_flags &= ~IFF_TX_SKB_SHARING;
|
|
dev->hw_features |= NETIF_F_SG;
|
|
dev->vlan_features |= NETIF_F_SG;
|
|
if (IS_IQD(card))
|
|
dev->features |= NETIF_F_SG;
|
|
|
|
return dev;
|
|
}
|
|
|
|
struct net_device *qeth_clone_netdev(struct net_device *orig)
|
|
{
|
|
struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
|
|
|
|
if (!clone)
|
|
return NULL;
|
|
|
|
clone->dev_port = orig->dev_port;
|
|
return clone;
|
|
}
|
|
|
|
static int qeth_core_probe_device(struct ccwgroup_device *gdev)
|
|
{
|
|
struct qeth_card *card;
|
|
struct device *dev;
|
|
int rc;
|
|
enum qeth_discipline_id enforced_disc;
|
|
char dbf_name[DBF_NAME_LEN];
|
|
|
|
QETH_DBF_TEXT(SETUP, 2, "probedev");
|
|
|
|
dev = &gdev->dev;
|
|
if (!get_device(dev))
|
|
return -ENODEV;
|
|
|
|
QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
|
|
|
|
card = qeth_alloc_card(gdev);
|
|
if (!card) {
|
|
QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
|
|
rc = -ENOMEM;
|
|
goto err_dev;
|
|
}
|
|
|
|
snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
|
|
dev_name(&gdev->dev));
|
|
card->debug = qeth_get_dbf_entry(dbf_name);
|
|
if (!card->debug) {
|
|
rc = qeth_add_dbf_entry(card, dbf_name);
|
|
if (rc)
|
|
goto err_card;
|
|
}
|
|
|
|
qeth_setup_card(card);
|
|
card->dev = qeth_alloc_netdev(card);
|
|
if (!card->dev) {
|
|
rc = -ENOMEM;
|
|
goto err_card;
|
|
}
|
|
|
|
qeth_determine_capabilities(card);
|
|
qeth_set_blkt_defaults(card);
|
|
|
|
card->qdio.in_q = qeth_alloc_qdio_queue();
|
|
if (!card->qdio.in_q) {
|
|
rc = -ENOMEM;
|
|
goto err_rx_queue;
|
|
}
|
|
|
|
card->qdio.no_out_queues = card->dev->num_tx_queues;
|
|
rc = qeth_update_from_chp_desc(card);
|
|
if (rc)
|
|
goto err_chp_desc;
|
|
|
|
gdev->dev.groups = qeth_dev_groups;
|
|
|
|
enforced_disc = qeth_enforce_discipline(card);
|
|
switch (enforced_disc) {
|
|
case QETH_DISCIPLINE_UNDETERMINED:
|
|
gdev->dev.type = &qeth_generic_devtype;
|
|
break;
|
|
default:
|
|
card->info.layer_enforced = true;
|
|
/* It's so early that we don't need the discipline_mutex yet. */
|
|
rc = qeth_setup_discipline(card, enforced_disc);
|
|
if (rc)
|
|
goto err_setup_disc;
|
|
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_setup_disc:
|
|
err_chp_desc:
|
|
qeth_free_qdio_queue(card->qdio.in_q);
|
|
err_rx_queue:
|
|
free_netdev(card->dev);
|
|
err_card:
|
|
qeth_core_free_card(card);
|
|
err_dev:
|
|
put_device(dev);
|
|
return rc;
|
|
}
|
|
|
|
static void qeth_core_remove_device(struct ccwgroup_device *gdev)
|
|
{
|
|
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
|
|
|
|
QETH_CARD_TEXT(card, 2, "removedv");
|
|
|
|
mutex_lock(&card->discipline_mutex);
|
|
if (card->discipline)
|
|
qeth_remove_discipline(card);
|
|
mutex_unlock(&card->discipline_mutex);
|
|
|
|
qeth_free_qdio_queues(card);
|
|
|
|
qeth_free_qdio_queue(card->qdio.in_q);
|
|
free_netdev(card->dev);
|
|
qeth_core_free_card(card);
|
|
put_device(&gdev->dev);
|
|
}
|
|
|
|
static int qeth_core_set_online(struct ccwgroup_device *gdev)
|
|
{
|
|
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
|
|
int rc = 0;
|
|
enum qeth_discipline_id def_discipline;
|
|
|
|
mutex_lock(&card->discipline_mutex);
|
|
if (!card->discipline) {
|
|
def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
|
|
QETH_DISCIPLINE_LAYER2;
|
|
rc = qeth_setup_discipline(card, def_discipline);
|
|
if (rc)
|
|
goto err;
|
|
}
|
|
|
|
rc = qeth_set_online(card, card->discipline);
|
|
|
|
err:
|
|
mutex_unlock(&card->discipline_mutex);
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_core_set_offline(struct ccwgroup_device *gdev)
|
|
{
|
|
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
|
|
int rc;
|
|
|
|
mutex_lock(&card->discipline_mutex);
|
|
rc = qeth_set_offline(card, card->discipline, false);
|
|
mutex_unlock(&card->discipline_mutex);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void qeth_core_shutdown(struct ccwgroup_device *gdev)
|
|
{
|
|
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
|
|
|
|
qeth_set_allowed_threads(card, 0, 1);
|
|
if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
|
|
qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
|
|
qeth_qdio_clear_card(card, 0);
|
|
qeth_drain_output_queues(card);
|
|
qdio_free(CARD_DDEV(card));
|
|
}
|
|
|
|
static ssize_t group_store(struct device_driver *ddrv, const char *buf,
|
|
size_t count)
|
|
{
|
|
int err;
|
|
|
|
err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
|
|
buf);
|
|
|
|
return err ? err : count;
|
|
}
|
|
static DRIVER_ATTR_WO(group);
|
|
|
|
static struct attribute *qeth_drv_attrs[] = {
|
|
&driver_attr_group.attr,
|
|
NULL,
|
|
};
|
|
static struct attribute_group qeth_drv_attr_group = {
|
|
.attrs = qeth_drv_attrs,
|
|
};
|
|
static const struct attribute_group *qeth_drv_attr_groups[] = {
|
|
&qeth_drv_attr_group,
|
|
NULL,
|
|
};
|
|
|
|
static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
|
|
.driver = {
|
|
.groups = qeth_drv_attr_groups,
|
|
.owner = THIS_MODULE,
|
|
.name = "qeth",
|
|
},
|
|
.ccw_driver = &qeth_ccw_driver,
|
|
.setup = qeth_core_probe_device,
|
|
.remove = qeth_core_remove_device,
|
|
.set_online = qeth_core_set_online,
|
|
.set_offline = qeth_core_set_offline,
|
|
.shutdown = qeth_core_shutdown,
|
|
};
|
|
|
|
int qeth_siocdevprivate(struct net_device *dev, struct ifreq *rq, void __user *data, int cmd)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
int rc = 0;
|
|
|
|
switch (cmd) {
|
|
case SIOC_QETH_ADP_SET_SNMP_CONTROL:
|
|
rc = qeth_snmp_command(card, data);
|
|
break;
|
|
case SIOC_QETH_GET_CARD_TYPE:
|
|
if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
|
|
!IS_VM_NIC(card))
|
|
return 1;
|
|
return 0;
|
|
case SIOC_QETH_QUERY_OAT:
|
|
rc = qeth_query_oat_command(card, data);
|
|
break;
|
|
default:
|
|
rc = -EOPNOTSUPP;
|
|
}
|
|
if (rc)
|
|
QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_siocdevprivate);
|
|
|
|
int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
struct mii_ioctl_data *mii_data;
|
|
int rc = 0;
|
|
|
|
switch (cmd) {
|
|
case SIOCGMIIPHY:
|
|
mii_data = if_mii(rq);
|
|
mii_data->phy_id = 0;
|
|
break;
|
|
case SIOCGMIIREG:
|
|
mii_data = if_mii(rq);
|
|
if (mii_data->phy_id != 0)
|
|
rc = -EINVAL;
|
|
else
|
|
mii_data->val_out = qeth_mdio_read(dev,
|
|
mii_data->phy_id, mii_data->reg_num);
|
|
break;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
if (rc)
|
|
QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_do_ioctl);
|
|
|
|
static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
|
|
unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
|
|
u32 *features = reply->param;
|
|
|
|
if (qeth_setassparms_inspect_rc(cmd))
|
|
return -EIO;
|
|
|
|
*features = cmd->data.setassparms.data.flags_32bit;
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
|
|
enum qeth_prot_versions prot)
|
|
{
|
|
return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
|
|
NULL, prot);
|
|
}
|
|
|
|
static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
|
|
enum qeth_prot_versions prot, u8 *lp2lp)
|
|
{
|
|
u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
|
|
struct qeth_cmd_buffer *iob;
|
|
struct qeth_ipa_caps caps;
|
|
u32 features;
|
|
int rc;
|
|
|
|
/* some L3 HW requires combined L3+L4 csum offload: */
|
|
if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
|
|
cstype == IPA_OUTBOUND_CHECKSUM)
|
|
required_features |= QETH_IPA_CHECKSUM_IP_HDR;
|
|
|
|
iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
|
|
prot);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if ((required_features & features) != required_features) {
|
|
qeth_set_csum_off(card, cstype, prot);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
|
|
SETASS_DATA_SIZEOF(flags_32bit),
|
|
prot);
|
|
if (!iob) {
|
|
qeth_set_csum_off(card, cstype, prot);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if (features & QETH_IPA_CHECKSUM_LP2LP)
|
|
required_features |= QETH_IPA_CHECKSUM_LP2LP;
|
|
__ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
|
|
rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
|
|
if (rc) {
|
|
qeth_set_csum_off(card, cstype, prot);
|
|
return rc;
|
|
}
|
|
|
|
if (!qeth_ipa_caps_supported(&caps, required_features) ||
|
|
!qeth_ipa_caps_enabled(&caps, required_features)) {
|
|
qeth_set_csum_off(card, cstype, prot);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
|
|
cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
|
|
|
|
if (lp2lp)
|
|
*lp2lp = qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
|
|
enum qeth_prot_versions prot, u8 *lp2lp)
|
|
{
|
|
return on ? qeth_set_csum_on(card, cstype, prot, lp2lp) :
|
|
qeth_set_csum_off(card, cstype, prot);
|
|
}
|
|
|
|
static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
|
|
unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
|
|
struct qeth_tso_start_data *tso_data = reply->param;
|
|
|
|
if (qeth_setassparms_inspect_rc(cmd))
|
|
return -EIO;
|
|
|
|
tso_data->mss = cmd->data.setassparms.data.tso.mss;
|
|
tso_data->supported = cmd->data.setassparms.data.tso.supported;
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_set_tso_off(struct qeth_card *card,
|
|
enum qeth_prot_versions prot)
|
|
{
|
|
return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
|
|
IPA_CMD_ASS_STOP, NULL, prot);
|
|
}
|
|
|
|
static int qeth_set_tso_on(struct qeth_card *card,
|
|
enum qeth_prot_versions prot)
|
|
{
|
|
struct qeth_tso_start_data tso_data;
|
|
struct qeth_cmd_buffer *iob;
|
|
struct qeth_ipa_caps caps;
|
|
int rc;
|
|
|
|
iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
|
|
IPA_CMD_ASS_START, 0, prot);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
|
|
qeth_set_tso_off(card, prot);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
|
|
IPA_CMD_ASS_ENABLE,
|
|
SETASS_DATA_SIZEOF(caps), prot);
|
|
if (!iob) {
|
|
qeth_set_tso_off(card, prot);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* enable TSO capability */
|
|
__ipa_cmd(iob)->data.setassparms.data.caps.enabled =
|
|
QETH_IPA_LARGE_SEND_TCP;
|
|
rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
|
|
if (rc) {
|
|
qeth_set_tso_off(card, prot);
|
|
return rc;
|
|
}
|
|
|
|
if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
|
|
!qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
|
|
qeth_set_tso_off(card, prot);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
|
|
tso_data.mss);
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
|
|
enum qeth_prot_versions prot)
|
|
{
|
|
return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
|
|
}
|
|
|
|
static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
|
|
{
|
|
int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
|
|
int rc_ipv6;
|
|
|
|
if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
|
|
rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
|
|
QETH_PROT_IPV4, NULL);
|
|
if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
|
|
/* no/one Offload Assist available, so the rc is trivial */
|
|
return rc_ipv4;
|
|
|
|
rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
|
|
QETH_PROT_IPV6, NULL);
|
|
|
|
if (on)
|
|
/* enable: success if any Assist is active */
|
|
return (rc_ipv6) ? rc_ipv4 : 0;
|
|
|
|
/* disable: failure if any Assist is still active */
|
|
return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
|
|
}
|
|
|
|
/**
|
|
* qeth_enable_hw_features() - (Re-)Enable HW functions for device features
|
|
* @dev: a net_device
|
|
*/
|
|
void qeth_enable_hw_features(struct net_device *dev)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
netdev_features_t features;
|
|
|
|
features = dev->features;
|
|
/* force-off any feature that might need an IPA sequence.
|
|
* netdev_update_features() will restart them.
|
|
*/
|
|
dev->features &= ~dev->hw_features;
|
|
/* toggle VLAN filter, so that VIDs are re-programmed: */
|
|
if (IS_LAYER2(card) && IS_VM_NIC(card)) {
|
|
dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
|
|
dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
|
|
}
|
|
netdev_update_features(dev);
|
|
if (features != dev->features)
|
|
dev_warn(&card->gdev->dev,
|
|
"Device recovery failed to restore all offload features\n");
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
|
|
|
|
static void qeth_check_restricted_features(struct qeth_card *card,
|
|
netdev_features_t changed,
|
|
netdev_features_t actual)
|
|
{
|
|
netdev_features_t ipv6_features = NETIF_F_TSO6;
|
|
netdev_features_t ipv4_features = NETIF_F_TSO;
|
|
|
|
if (!card->info.has_lp2lp_cso_v6)
|
|
ipv6_features |= NETIF_F_IPV6_CSUM;
|
|
if (!card->info.has_lp2lp_cso_v4)
|
|
ipv4_features |= NETIF_F_IP_CSUM;
|
|
|
|
if ((changed & ipv6_features) && !(actual & ipv6_features))
|
|
qeth_flush_local_addrs6(card);
|
|
if ((changed & ipv4_features) && !(actual & ipv4_features))
|
|
qeth_flush_local_addrs4(card);
|
|
}
|
|
|
|
int qeth_set_features(struct net_device *dev, netdev_features_t features)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
netdev_features_t changed = dev->features ^ features;
|
|
int rc = 0;
|
|
|
|
QETH_CARD_TEXT(card, 2, "setfeat");
|
|
QETH_CARD_HEX(card, 2, &features, sizeof(features));
|
|
|
|
if ((changed & NETIF_F_IP_CSUM)) {
|
|
rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
|
|
IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4,
|
|
&card->info.has_lp2lp_cso_v4);
|
|
if (rc)
|
|
changed ^= NETIF_F_IP_CSUM;
|
|
}
|
|
if (changed & NETIF_F_IPV6_CSUM) {
|
|
rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
|
|
IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6,
|
|
&card->info.has_lp2lp_cso_v6);
|
|
if (rc)
|
|
changed ^= NETIF_F_IPV6_CSUM;
|
|
}
|
|
if (changed & NETIF_F_RXCSUM) {
|
|
rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
|
|
if (rc)
|
|
changed ^= NETIF_F_RXCSUM;
|
|
}
|
|
if (changed & NETIF_F_TSO) {
|
|
rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
|
|
QETH_PROT_IPV4);
|
|
if (rc)
|
|
changed ^= NETIF_F_TSO;
|
|
}
|
|
if (changed & NETIF_F_TSO6) {
|
|
rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
|
|
QETH_PROT_IPV6);
|
|
if (rc)
|
|
changed ^= NETIF_F_TSO6;
|
|
}
|
|
|
|
qeth_check_restricted_features(card, dev->features ^ features,
|
|
dev->features ^ changed);
|
|
|
|
/* everything changed successfully? */
|
|
if ((dev->features ^ features) == changed)
|
|
return 0;
|
|
/* something went wrong. save changed features and return error */
|
|
dev->features ^= changed;
|
|
return -EIO;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_set_features);
|
|
|
|
netdev_features_t qeth_fix_features(struct net_device *dev,
|
|
netdev_features_t features)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
|
|
QETH_CARD_TEXT(card, 2, "fixfeat");
|
|
if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
|
|
features &= ~NETIF_F_IP_CSUM;
|
|
if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
|
|
features &= ~NETIF_F_IPV6_CSUM;
|
|
if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
|
|
!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
|
|
features &= ~NETIF_F_RXCSUM;
|
|
if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
|
|
features &= ~NETIF_F_TSO;
|
|
if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
|
|
features &= ~NETIF_F_TSO6;
|
|
|
|
QETH_CARD_HEX(card, 2, &features, sizeof(features));
|
|
return features;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_fix_features);
|
|
|
|
netdev_features_t qeth_features_check(struct sk_buff *skb,
|
|
struct net_device *dev,
|
|
netdev_features_t features)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
|
|
/* Traffic with local next-hop is not eligible for some offloads: */
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL &&
|
|
READ_ONCE(card->options.isolation) != ISOLATION_MODE_FWD) {
|
|
netdev_features_t restricted = 0;
|
|
|
|
if (skb_is_gso(skb) && !netif_needs_gso(skb, features))
|
|
restricted |= NETIF_F_ALL_TSO;
|
|
|
|
switch (vlan_get_protocol(skb)) {
|
|
case htons(ETH_P_IP):
|
|
if (!card->info.has_lp2lp_cso_v4)
|
|
restricted |= NETIF_F_IP_CSUM;
|
|
|
|
if (restricted && qeth_next_hop_is_local_v4(card, skb))
|
|
features &= ~restricted;
|
|
break;
|
|
case htons(ETH_P_IPV6):
|
|
if (!card->info.has_lp2lp_cso_v6)
|
|
restricted |= NETIF_F_IPV6_CSUM;
|
|
|
|
if (restricted && qeth_next_hop_is_local_v6(card, skb))
|
|
features &= ~restricted;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* GSO segmentation builds skbs with
|
|
* a (small) linear part for the headers, and
|
|
* page frags for the data.
|
|
* Compared to a linear skb, the header-only part consumes an
|
|
* additional buffer element. This reduces buffer utilization, and
|
|
* hurts throughput. So compress small segments into one element.
|
|
*/
|
|
if (netif_needs_gso(skb, features)) {
|
|
/* match skb_segment(): */
|
|
unsigned int doffset = skb->data - skb_mac_header(skb);
|
|
unsigned int hsize = skb_shinfo(skb)->gso_size;
|
|
unsigned int hroom = skb_headroom(skb);
|
|
|
|
/* linearize only if resulting skb allocations are order-0: */
|
|
if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
|
|
features &= ~NETIF_F_SG;
|
|
}
|
|
|
|
return vlan_features_check(skb, features);
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_features_check);
|
|
|
|
void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
struct qeth_qdio_out_q *queue;
|
|
unsigned int i;
|
|
|
|
QETH_CARD_TEXT(card, 5, "getstat");
|
|
|
|
stats->rx_packets = card->stats.rx_packets;
|
|
stats->rx_bytes = card->stats.rx_bytes;
|
|
stats->rx_errors = card->stats.rx_length_errors +
|
|
card->stats.rx_frame_errors +
|
|
card->stats.rx_fifo_errors;
|
|
stats->rx_dropped = card->stats.rx_dropped_nomem +
|
|
card->stats.rx_dropped_notsupp +
|
|
card->stats.rx_dropped_runt;
|
|
stats->multicast = card->stats.rx_multicast;
|
|
stats->rx_length_errors = card->stats.rx_length_errors;
|
|
stats->rx_frame_errors = card->stats.rx_frame_errors;
|
|
stats->rx_fifo_errors = card->stats.rx_fifo_errors;
|
|
|
|
for (i = 0; i < card->qdio.no_out_queues; i++) {
|
|
queue = card->qdio.out_qs[i];
|
|
|
|
stats->tx_packets += queue->stats.tx_packets;
|
|
stats->tx_bytes += queue->stats.tx_bytes;
|
|
stats->tx_errors += queue->stats.tx_errors;
|
|
stats->tx_dropped += queue->stats.tx_dropped;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_get_stats64);
|
|
|
|
#define TC_IQD_UCAST 0
|
|
static void qeth_iqd_set_prio_tc_map(struct net_device *dev,
|
|
unsigned int ucast_txqs)
|
|
{
|
|
unsigned int prio;
|
|
|
|
/* IQD requires mcast traffic to be placed on a dedicated queue, and
|
|
* qeth_iqd_select_queue() deals with this.
|
|
* For unicast traffic, we defer the queue selection to the stack.
|
|
* By installing a trivial prio map that spans over only the unicast
|
|
* queues, we can encourage the stack to spread the ucast traffic evenly
|
|
* without selecting the mcast queue.
|
|
*/
|
|
|
|
/* One traffic class, spanning over all active ucast queues: */
|
|
netdev_set_num_tc(dev, 1);
|
|
netdev_set_tc_queue(dev, TC_IQD_UCAST, ucast_txqs,
|
|
QETH_IQD_MIN_UCAST_TXQ);
|
|
|
|
/* Map all priorities to this traffic class: */
|
|
for (prio = 0; prio <= TC_BITMASK; prio++)
|
|
netdev_set_prio_tc_map(dev, prio, TC_IQD_UCAST);
|
|
}
|
|
|
|
int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count)
|
|
{
|
|
struct net_device *dev = card->dev;
|
|
int rc;
|
|
|
|
/* Per netif_setup_tc(), adjust the mapping first: */
|
|
if (IS_IQD(card))
|
|
qeth_iqd_set_prio_tc_map(dev, count - 1);
|
|
|
|
rc = netif_set_real_num_tx_queues(dev, count);
|
|
|
|
if (rc && IS_IQD(card))
|
|
qeth_iqd_set_prio_tc_map(dev, dev->real_num_tx_queues - 1);
|
|
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_set_real_num_tx_queues);
|
|
|
|
u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
|
|
u8 cast_type, struct net_device *sb_dev)
|
|
{
|
|
u16 txq;
|
|
|
|
if (cast_type != RTN_UNICAST)
|
|
return QETH_IQD_MCAST_TXQ;
|
|
if (dev->real_num_tx_queues == QETH_IQD_MIN_TXQ)
|
|
return QETH_IQD_MIN_UCAST_TXQ;
|
|
|
|
txq = netdev_pick_tx(dev, skb, sb_dev);
|
|
return (txq == QETH_IQD_MCAST_TXQ) ? QETH_IQD_MIN_UCAST_TXQ : txq;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
|
|
|
|
u16 qeth_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
|
|
struct net_device *sb_dev)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
|
|
if (qeth_uses_tx_prio_queueing(card))
|
|
return qeth_get_priority_queue(card, skb);
|
|
|
|
return netdev_pick_tx(dev, skb, sb_dev);
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_osa_select_queue);
|
|
|
|
int qeth_open(struct net_device *dev)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
struct qeth_qdio_out_q *queue;
|
|
unsigned int i;
|
|
|
|
QETH_CARD_TEXT(card, 4, "qethopen");
|
|
|
|
card->data.state = CH_STATE_UP;
|
|
netif_tx_start_all_queues(dev);
|
|
|
|
local_bh_disable();
|
|
qeth_for_each_output_queue(card, queue, i) {
|
|
netif_napi_add_tx(dev, &queue->napi, qeth_tx_poll);
|
|
napi_enable(&queue->napi);
|
|
napi_schedule(&queue->napi);
|
|
}
|
|
|
|
napi_enable(&card->napi);
|
|
napi_schedule(&card->napi);
|
|
/* kick-start the NAPI softirq: */
|
|
local_bh_enable();
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_open);
|
|
|
|
int qeth_stop(struct net_device *dev)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
struct qeth_qdio_out_q *queue;
|
|
unsigned int i;
|
|
|
|
QETH_CARD_TEXT(card, 4, "qethstop");
|
|
|
|
napi_disable(&card->napi);
|
|
cancel_delayed_work_sync(&card->buffer_reclaim_work);
|
|
qdio_stop_irq(CARD_DDEV(card));
|
|
|
|
/* Quiesce the NAPI instances: */
|
|
qeth_for_each_output_queue(card, queue, i)
|
|
napi_disable(&queue->napi);
|
|
|
|
/* Stop .ndo_start_xmit, might still access queue->napi. */
|
|
netif_tx_disable(dev);
|
|
|
|
qeth_for_each_output_queue(card, queue, i) {
|
|
del_timer_sync(&queue->timer);
|
|
/* Queues may get re-allocated, so remove the NAPIs. */
|
|
netif_napi_del(&queue->napi);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(qeth_stop);
|
|
|
|
static int __init qeth_core_init(void)
|
|
{
|
|
int rc;
|
|
|
|
pr_info("loading core functions\n");
|
|
|
|
qeth_debugfs_root = debugfs_create_dir("qeth", NULL);
|
|
|
|
rc = qeth_register_dbf_views();
|
|
if (rc)
|
|
goto dbf_err;
|
|
qeth_core_root_dev = root_device_register("qeth");
|
|
rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
|
|
if (rc)
|
|
goto register_err;
|
|
qeth_core_header_cache =
|
|
kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
|
|
roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
|
|
0, NULL);
|
|
if (!qeth_core_header_cache) {
|
|
rc = -ENOMEM;
|
|
goto slab_err;
|
|
}
|
|
qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
|
|
sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
|
|
if (!qeth_qdio_outbuf_cache) {
|
|
rc = -ENOMEM;
|
|
goto cqslab_err;
|
|
}
|
|
|
|
qeth_qaob_cache = kmem_cache_create("qeth_qaob",
|
|
sizeof(struct qaob),
|
|
sizeof(struct qaob),
|
|
0, NULL);
|
|
if (!qeth_qaob_cache) {
|
|
rc = -ENOMEM;
|
|
goto qaob_err;
|
|
}
|
|
|
|
rc = ccw_driver_register(&qeth_ccw_driver);
|
|
if (rc)
|
|
goto ccw_err;
|
|
rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
|
|
if (rc)
|
|
goto ccwgroup_err;
|
|
|
|
return 0;
|
|
|
|
ccwgroup_err:
|
|
ccw_driver_unregister(&qeth_ccw_driver);
|
|
ccw_err:
|
|
kmem_cache_destroy(qeth_qaob_cache);
|
|
qaob_err:
|
|
kmem_cache_destroy(qeth_qdio_outbuf_cache);
|
|
cqslab_err:
|
|
kmem_cache_destroy(qeth_core_header_cache);
|
|
slab_err:
|
|
root_device_unregister(qeth_core_root_dev);
|
|
register_err:
|
|
qeth_unregister_dbf_views();
|
|
dbf_err:
|
|
debugfs_remove_recursive(qeth_debugfs_root);
|
|
pr_err("Initializing the qeth device driver failed\n");
|
|
return rc;
|
|
}
|
|
|
|
static void __exit qeth_core_exit(void)
|
|
{
|
|
qeth_clear_dbf_list();
|
|
ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
|
|
ccw_driver_unregister(&qeth_ccw_driver);
|
|
kmem_cache_destroy(qeth_qaob_cache);
|
|
kmem_cache_destroy(qeth_qdio_outbuf_cache);
|
|
kmem_cache_destroy(qeth_core_header_cache);
|
|
root_device_unregister(qeth_core_root_dev);
|
|
qeth_unregister_dbf_views();
|
|
debugfs_remove_recursive(qeth_debugfs_root);
|
|
pr_info("core functions removed\n");
|
|
}
|
|
|
|
module_init(qeth_core_init);
|
|
module_exit(qeth_core_exit);
|
|
MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
|
|
MODULE_DESCRIPTION("qeth core functions");
|
|
MODULE_LICENSE("GPL");
|