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![Jakub Kicinski](/assets/img/avatar_default.png)
Drivers should call the TSO setting helper, GSO is controllable by user space. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2223 lines
55 KiB
C
2223 lines
55 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/module.h>
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#include <linux/moduleparam.h>
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#include <linux/bitops.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/etherdevice.h>
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#include <linux/ip.h>
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#include <linux/in.h>
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#include <linux/ipv6.h>
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#include <linux/inetdevice.h>
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#include <linux/igmp.h>
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#include <linux/slab.h>
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#include <linux/if_ether.h>
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#include <linux/if_vlan.h>
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#include <linux/skbuff.h>
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#include <net/ip.h>
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#include <net/arp.h>
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#include <net/route.h>
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#include <net/ipv6.h>
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#include <net/ip6_route.h>
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#include <net/iucv/af_iucv.h>
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#include <linux/hashtable.h>
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#include "qeth_l3.h"
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static int qeth_l3_register_addr_entry(struct qeth_card *,
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struct qeth_ipaddr *);
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static int qeth_l3_deregister_addr_entry(struct qeth_card *,
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struct qeth_ipaddr *);
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int qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const u8 *addr,
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char *buf)
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{
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if (proto == QETH_PROT_IPV4)
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return sprintf(buf, "%pI4", addr);
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else
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return sprintf(buf, "%pI6", addr);
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}
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static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
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struct qeth_ipaddr *query)
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{
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u32 key = qeth_l3_ipaddr_hash(query);
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struct qeth_ipaddr *addr;
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if (query->is_multicast) {
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hash_for_each_possible(card->rx_mode_addrs, addr, hnode, key)
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if (qeth_l3_addr_match_ip(addr, query))
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return addr;
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} else {
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hash_for_each_possible(card->ip_htable, addr, hnode, key)
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if (qeth_l3_addr_match_ip(addr, query))
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return addr;
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}
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return NULL;
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}
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static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
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{
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int i, j;
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u8 octet;
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for (i = 0; i < len; ++i) {
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octet = addr[i];
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for (j = 7; j >= 0; --j) {
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bits[i*8 + j] = octet & 1;
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octet >>= 1;
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}
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}
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}
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static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
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struct qeth_ipaddr *addr)
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{
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struct qeth_ipato_entry *ipatoe;
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u8 addr_bits[128] = {0, };
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u8 ipatoe_bits[128] = {0, };
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int rc = 0;
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if (!card->ipato.enabled)
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return false;
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if (addr->type != QETH_IP_TYPE_NORMAL)
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return false;
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qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
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(addr->proto == QETH_PROT_IPV4) ? 4 : 16);
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list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
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if (addr->proto != ipatoe->proto)
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continue;
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qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
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(ipatoe->proto == QETH_PROT_IPV4) ?
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4 : 16);
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rc = !memcmp(addr_bits, ipatoe_bits, ipatoe->mask_bits);
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if (rc)
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break;
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}
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/* invert? */
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if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
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rc = !rc;
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else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
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rc = !rc;
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return rc;
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}
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static int qeth_l3_delete_ip(struct qeth_card *card,
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struct qeth_ipaddr *tmp_addr)
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{
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int rc = 0;
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struct qeth_ipaddr *addr;
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if (tmp_addr->type == QETH_IP_TYPE_RXIP)
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QETH_CARD_TEXT(card, 2, "delrxip");
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else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
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QETH_CARD_TEXT(card, 2, "delvipa");
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else
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QETH_CARD_TEXT(card, 2, "delip");
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if (tmp_addr->proto == QETH_PROT_IPV4)
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QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
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else {
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QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
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QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
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}
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addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
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if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
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return -ENOENT;
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addr->ref_counter--;
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if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
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return rc;
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if (qeth_card_hw_is_reachable(card))
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rc = qeth_l3_deregister_addr_entry(card, addr);
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hash_del(&addr->hnode);
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kfree(addr);
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return rc;
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}
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static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
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{
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int rc = 0;
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struct qeth_ipaddr *addr;
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char buf[40];
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if (tmp_addr->type == QETH_IP_TYPE_RXIP)
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QETH_CARD_TEXT(card, 2, "addrxip");
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else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
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QETH_CARD_TEXT(card, 2, "addvipa");
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else
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QETH_CARD_TEXT(card, 2, "addip");
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if (tmp_addr->proto == QETH_PROT_IPV4)
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QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
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else {
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QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
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QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
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}
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addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
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if (addr) {
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if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
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return -EADDRINUSE;
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if (qeth_l3_addr_match_all(addr, tmp_addr)) {
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addr->ref_counter++;
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return 0;
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}
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qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
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buf);
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dev_warn(&card->gdev->dev,
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"Registering IP address %s failed\n", buf);
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return -EADDRINUSE;
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} else {
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addr = kmemdup(tmp_addr, sizeof(*tmp_addr), GFP_KERNEL);
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if (!addr)
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return -ENOMEM;
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if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
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QETH_CARD_TEXT(card, 2, "tkovaddr");
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addr->ipato = 1;
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}
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hash_add(card->ip_htable, &addr->hnode,
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qeth_l3_ipaddr_hash(addr));
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if (!qeth_card_hw_is_reachable(card)) {
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addr->disp_flag = QETH_DISP_ADDR_ADD;
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return 0;
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}
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rc = qeth_l3_register_addr_entry(card, addr);
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if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) {
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addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
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} else {
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hash_del(&addr->hnode);
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kfree(addr);
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}
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}
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return rc;
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}
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static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr,
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bool add)
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{
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int rc;
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mutex_lock(&card->ip_lock);
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rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr);
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mutex_unlock(&card->ip_lock);
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return rc;
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}
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static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card)
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{
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struct qeth_ipaddr *addr;
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struct hlist_node *tmp;
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int i;
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hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) {
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hash_del(&addr->hnode);
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kfree(addr);
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}
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}
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static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
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{
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struct qeth_ipaddr *addr;
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struct hlist_node *tmp;
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int i;
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QETH_CARD_TEXT(card, 4, "clearip");
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mutex_lock(&card->ip_lock);
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hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
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if (!recover) {
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hash_del(&addr->hnode);
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kfree(addr);
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continue;
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}
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addr->disp_flag = QETH_DISP_ADDR_ADD;
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}
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mutex_unlock(&card->ip_lock);
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}
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static void qeth_l3_recover_ip(struct qeth_card *card)
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{
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struct qeth_ipaddr *addr;
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struct hlist_node *tmp;
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int i;
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int rc;
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QETH_CARD_TEXT(card, 4, "recovrip");
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mutex_lock(&card->ip_lock);
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hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
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if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
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rc = qeth_l3_register_addr_entry(card, addr);
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if (!rc) {
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addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
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} else {
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hash_del(&addr->hnode);
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kfree(addr);
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}
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}
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}
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mutex_unlock(&card->ip_lock);
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}
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static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply,
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unsigned long data)
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{
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struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
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switch (cmd->hdr.return_code) {
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case IPA_RC_SUCCESS:
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return 0;
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case IPA_RC_DUPLICATE_IP_ADDRESS:
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return -EADDRINUSE;
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case IPA_RC_MC_ADDR_NOT_FOUND:
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return -ENOENT;
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case IPA_RC_LAN_OFFLINE:
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return -ENETDOWN;
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default:
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return -EIO;
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}
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}
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static int qeth_l3_send_setdelmc(struct qeth_card *card,
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struct qeth_ipaddr *addr,
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enum qeth_ipa_cmds ipacmd)
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{
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struct qeth_cmd_buffer *iob;
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struct qeth_ipa_cmd *cmd;
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QETH_CARD_TEXT(card, 4, "setdelmc");
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iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
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IPA_DATA_SIZEOF(setdelipm));
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if (!iob)
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return -ENOMEM;
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cmd = __ipa_cmd(iob);
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if (addr->proto == QETH_PROT_IPV6) {
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cmd->data.setdelipm.ip = addr->u.a6.addr;
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ipv6_eth_mc_map(&addr->u.a6.addr, cmd->data.setdelipm.mac);
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} else {
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cmd->data.setdelipm.ip.s6_addr32[3] = addr->u.a4.addr;
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ip_eth_mc_map(addr->u.a4.addr, cmd->data.setdelipm.mac);
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}
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return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
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}
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static void qeth_l3_set_ipv6_prefix(struct in6_addr *prefix, unsigned int len)
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{
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unsigned int i = 0;
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while (len && i < 4) {
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int mask_len = min_t(int, len, 32);
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prefix->s6_addr32[i] = inet_make_mask(mask_len);
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len -= mask_len;
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i++;
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}
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}
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static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
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{
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switch (addr->type) {
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case QETH_IP_TYPE_RXIP:
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return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
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case QETH_IP_TYPE_VIPA:
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return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
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QETH_IPA_DELIP_VIPA_FLAG;
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default:
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return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
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}
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}
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static int qeth_l3_send_setdelip(struct qeth_card *card,
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struct qeth_ipaddr *addr,
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enum qeth_ipa_cmds ipacmd)
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{
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struct qeth_cmd_buffer *iob;
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struct qeth_ipa_cmd *cmd;
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u32 flags;
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QETH_CARD_TEXT(card, 4, "setdelip");
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iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
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IPA_DATA_SIZEOF(setdelip6));
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if (!iob)
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return -ENOMEM;
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cmd = __ipa_cmd(iob);
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flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
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QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
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if (addr->proto == QETH_PROT_IPV6) {
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cmd->data.setdelip6.addr = addr->u.a6.addr;
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qeth_l3_set_ipv6_prefix(&cmd->data.setdelip6.prefix,
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addr->u.a6.pfxlen);
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cmd->data.setdelip6.flags = flags;
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} else {
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cmd->data.setdelip4.addr = addr->u.a4.addr;
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cmd->data.setdelip4.mask = addr->u.a4.mask;
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cmd->data.setdelip4.flags = flags;
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}
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return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
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}
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static int qeth_l3_send_setrouting(struct qeth_card *card,
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enum qeth_routing_types type, enum qeth_prot_versions prot)
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{
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int rc;
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struct qeth_ipa_cmd *cmd;
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struct qeth_cmd_buffer *iob;
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QETH_CARD_TEXT(card, 4, "setroutg");
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iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETRTG, prot,
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IPA_DATA_SIZEOF(setrtg));
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if (!iob)
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return -ENOMEM;
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cmd = __ipa_cmd(iob);
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cmd->data.setrtg.type = (type);
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rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
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return rc;
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}
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static int qeth_l3_correct_routing_type(struct qeth_card *card,
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enum qeth_routing_types *type, enum qeth_prot_versions prot)
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{
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if (IS_IQD(card)) {
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switch (*type) {
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case NO_ROUTER:
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case PRIMARY_CONNECTOR:
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case SECONDARY_CONNECTOR:
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case MULTICAST_ROUTER:
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return 0;
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default:
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goto out_inval;
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}
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} else {
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switch (*type) {
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case NO_ROUTER:
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case PRIMARY_ROUTER:
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case SECONDARY_ROUTER:
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return 0;
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case MULTICAST_ROUTER:
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if (qeth_is_ipafunc_supported(card, prot,
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IPA_OSA_MC_ROUTER))
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return 0;
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goto out_inval;
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default:
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goto out_inval;
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}
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}
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out_inval:
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*type = NO_ROUTER;
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return -EINVAL;
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}
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int qeth_l3_setrouting_v4(struct qeth_card *card)
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{
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int rc;
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QETH_CARD_TEXT(card, 3, "setrtg4");
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rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
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QETH_PROT_IPV4);
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if (rc)
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return rc;
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rc = qeth_l3_send_setrouting(card, card->options.route4.type,
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QETH_PROT_IPV4);
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if (rc) {
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card->options.route4.type = NO_ROUTER;
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QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
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rc, CARD_DEVID(card));
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}
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return rc;
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}
|
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|
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int qeth_l3_setrouting_v6(struct qeth_card *card)
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{
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int rc = 0;
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QETH_CARD_TEXT(card, 3, "setrtg6");
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if (!qeth_is_supported(card, IPA_IPV6))
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return 0;
|
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rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
|
|
QETH_PROT_IPV6);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = qeth_l3_send_setrouting(card, card->options.route6.type,
|
|
QETH_PROT_IPV6);
|
|
if (rc) {
|
|
card->options.route6.type = NO_ROUTER;
|
|
QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
|
|
rc, CARD_DEVID(card));
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* IP address takeover related functions
|
|
*/
|
|
|
|
/*
|
|
* qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
|
|
*
|
|
* Caller must hold ip_lock.
|
|
*/
|
|
void qeth_l3_update_ipato(struct qeth_card *card)
|
|
{
|
|
struct qeth_ipaddr *addr;
|
|
unsigned int i;
|
|
|
|
hash_for_each(card->ip_htable, i, addr, hnode) {
|
|
if (addr->type != QETH_IP_TYPE_NORMAL)
|
|
continue;
|
|
addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
|
|
}
|
|
}
|
|
|
|
static void qeth_l3_clear_ipato_list(struct qeth_card *card)
|
|
{
|
|
struct qeth_ipato_entry *ipatoe, *tmp;
|
|
|
|
mutex_lock(&card->ip_lock);
|
|
|
|
list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
|
|
list_del(&ipatoe->entry);
|
|
kfree(ipatoe);
|
|
}
|
|
|
|
qeth_l3_update_ipato(card);
|
|
mutex_unlock(&card->ip_lock);
|
|
}
|
|
|
|
int qeth_l3_add_ipato_entry(struct qeth_card *card,
|
|
struct qeth_ipato_entry *new)
|
|
{
|
|
struct qeth_ipato_entry *ipatoe;
|
|
int rc = 0;
|
|
|
|
QETH_CARD_TEXT(card, 2, "addipato");
|
|
|
|
mutex_lock(&card->ip_lock);
|
|
|
|
list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
|
|
if (ipatoe->proto != new->proto)
|
|
continue;
|
|
if (!memcmp(ipatoe->addr, new->addr,
|
|
(ipatoe->proto == QETH_PROT_IPV4) ? 4 : 16) &&
|
|
(ipatoe->mask_bits == new->mask_bits)) {
|
|
rc = -EEXIST;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!rc) {
|
|
list_add_tail(&new->entry, &card->ipato.entries);
|
|
qeth_l3_update_ipato(card);
|
|
}
|
|
|
|
mutex_unlock(&card->ip_lock);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int qeth_l3_del_ipato_entry(struct qeth_card *card,
|
|
enum qeth_prot_versions proto, u8 *addr,
|
|
unsigned int mask_bits)
|
|
{
|
|
struct qeth_ipato_entry *ipatoe, *tmp;
|
|
int rc = -ENOENT;
|
|
|
|
QETH_CARD_TEXT(card, 2, "delipato");
|
|
|
|
mutex_lock(&card->ip_lock);
|
|
|
|
list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
|
|
if (ipatoe->proto != proto)
|
|
continue;
|
|
if (!memcmp(ipatoe->addr, addr,
|
|
(proto == QETH_PROT_IPV4) ? 4 : 16) &&
|
|
(ipatoe->mask_bits == mask_bits)) {
|
|
list_del(&ipatoe->entry);
|
|
qeth_l3_update_ipato(card);
|
|
kfree(ipatoe);
|
|
rc = 0;
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&card->ip_lock);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
|
|
enum qeth_ip_types type,
|
|
enum qeth_prot_versions proto)
|
|
{
|
|
struct qeth_ipaddr addr;
|
|
|
|
qeth_l3_init_ipaddr(&addr, type, proto);
|
|
if (proto == QETH_PROT_IPV4)
|
|
memcpy(&addr.u.a4.addr, ip, 4);
|
|
else
|
|
memcpy(&addr.u.a6.addr, ip, 16);
|
|
|
|
return qeth_l3_modify_ip(card, &addr, add);
|
|
}
|
|
|
|
int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
|
|
{
|
|
struct qeth_ipaddr addr;
|
|
unsigned int i;
|
|
|
|
qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
|
|
addr.u.a6.addr.s6_addr[0] = 0xfe;
|
|
addr.u.a6.addr.s6_addr[1] = 0x80;
|
|
for (i = 0; i < 8; i++)
|
|
addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
|
|
|
|
return qeth_l3_modify_ip(card, &addr, add);
|
|
}
|
|
|
|
static int qeth_l3_register_addr_entry(struct qeth_card *card,
|
|
struct qeth_ipaddr *addr)
|
|
{
|
|
char buf[50];
|
|
int rc = 0;
|
|
int cnt = 3;
|
|
|
|
if (card->options.sniffer)
|
|
return 0;
|
|
|
|
if (addr->proto == QETH_PROT_IPV4) {
|
|
QETH_CARD_TEXT(card, 2, "setaddr4");
|
|
QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
|
|
} else if (addr->proto == QETH_PROT_IPV6) {
|
|
QETH_CARD_TEXT(card, 2, "setaddr6");
|
|
QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
|
|
QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
|
|
} else {
|
|
QETH_CARD_TEXT(card, 2, "setaddr?");
|
|
QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
|
|
}
|
|
do {
|
|
if (addr->is_multicast)
|
|
rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
|
|
else
|
|
rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
|
|
if (rc)
|
|
QETH_CARD_TEXT(card, 2, "failed");
|
|
} while ((--cnt > 0) && rc);
|
|
if (rc) {
|
|
QETH_CARD_TEXT(card, 2, "FAILED");
|
|
qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
|
|
dev_warn(&card->gdev->dev,
|
|
"Registering IP address %s failed\n", buf);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
|
|
struct qeth_ipaddr *addr)
|
|
{
|
|
int rc = 0;
|
|
|
|
if (card->options.sniffer)
|
|
return 0;
|
|
|
|
if (addr->proto == QETH_PROT_IPV4) {
|
|
QETH_CARD_TEXT(card, 2, "deladdr4");
|
|
QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
|
|
} else if (addr->proto == QETH_PROT_IPV6) {
|
|
QETH_CARD_TEXT(card, 2, "deladdr6");
|
|
QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
|
|
QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
|
|
} else {
|
|
QETH_CARD_TEXT(card, 2, "deladdr?");
|
|
QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
|
|
}
|
|
if (addr->is_multicast)
|
|
rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
|
|
else
|
|
rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
|
|
if (rc)
|
|
QETH_CARD_TEXT(card, 2, "failed");
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_l3_setadapter_parms(struct qeth_card *card)
|
|
{
|
|
int rc = 0;
|
|
|
|
QETH_CARD_TEXT(card, 2, "setadprm");
|
|
|
|
if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
|
|
rc = qeth_setadpparms_change_macaddr(card);
|
|
if (rc)
|
|
dev_warn(&card->gdev->dev, "Reading the adapter MAC"
|
|
" address failed\n");
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
|
|
{
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 3, "ipaarp");
|
|
|
|
if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
|
|
dev_info(&card->gdev->dev,
|
|
"ARP processing not supported on %s!\n",
|
|
netdev_name(card->dev));
|
|
return 0;
|
|
}
|
|
rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
|
|
IPA_CMD_ASS_START, NULL);
|
|
if (rc) {
|
|
dev_warn(&card->gdev->dev,
|
|
"Starting ARP processing support for %s failed\n",
|
|
netdev_name(card->dev));
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
|
|
{
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 3, "stsrcmac");
|
|
|
|
if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
|
|
dev_info(&card->gdev->dev,
|
|
"Inbound source MAC-address not supported on %s\n",
|
|
netdev_name(card->dev));
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
|
|
IPA_CMD_ASS_START, NULL);
|
|
if (rc)
|
|
dev_warn(&card->gdev->dev,
|
|
"Starting source MAC-address support for %s failed\n",
|
|
netdev_name(card->dev));
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
|
|
{
|
|
int rc = 0;
|
|
|
|
QETH_CARD_TEXT(card, 3, "strtvlan");
|
|
|
|
if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
|
|
dev_info(&card->gdev->dev,
|
|
"VLAN not supported on %s\n", netdev_name(card->dev));
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
|
|
IPA_CMD_ASS_START, NULL);
|
|
if (rc) {
|
|
dev_warn(&card->gdev->dev,
|
|
"Starting VLAN support for %s failed\n",
|
|
netdev_name(card->dev));
|
|
} else {
|
|
dev_info(&card->gdev->dev, "VLAN enabled\n");
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
|
|
{
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 3, "stmcast");
|
|
|
|
if (!qeth_is_supported(card, IPA_MULTICASTING)) {
|
|
dev_info(&card->gdev->dev,
|
|
"Multicast not supported on %s\n",
|
|
netdev_name(card->dev));
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
|
|
IPA_CMD_ASS_START, NULL);
|
|
if (rc) {
|
|
dev_warn(&card->gdev->dev,
|
|
"Starting multicast support for %s failed\n",
|
|
netdev_name(card->dev));
|
|
} else {
|
|
dev_info(&card->gdev->dev, "Multicast enabled\n");
|
|
card->dev->flags |= IFF_MULTICAST;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
|
|
{
|
|
u32 ipv6_data = 3;
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 3, "softipv6");
|
|
|
|
if (IS_IQD(card))
|
|
goto out;
|
|
|
|
rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START,
|
|
&ipv6_data);
|
|
if (rc) {
|
|
dev_err(&card->gdev->dev,
|
|
"Activating IPv6 support for %s failed\n",
|
|
netdev_name(card->dev));
|
|
return rc;
|
|
}
|
|
rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START,
|
|
NULL);
|
|
if (rc) {
|
|
dev_err(&card->gdev->dev,
|
|
"Activating IPv6 support for %s failed\n",
|
|
netdev_name(card->dev));
|
|
return rc;
|
|
}
|
|
rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
|
|
IPA_CMD_ASS_START, NULL);
|
|
if (rc) {
|
|
dev_warn(&card->gdev->dev,
|
|
"Enabling the passthrough mode for %s failed\n",
|
|
netdev_name(card->dev));
|
|
return rc;
|
|
}
|
|
out:
|
|
dev_info(&card->gdev->dev, "IPV6 enabled\n");
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
|
|
{
|
|
QETH_CARD_TEXT(card, 3, "strtipv6");
|
|
|
|
if (!qeth_is_supported(card, IPA_IPV6)) {
|
|
dev_info(&card->gdev->dev,
|
|
"IPv6 not supported on %s\n", netdev_name(card->dev));
|
|
return 0;
|
|
}
|
|
return qeth_l3_softsetup_ipv6(card);
|
|
}
|
|
|
|
static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
|
|
{
|
|
u32 filter_data = 1;
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 3, "stbrdcst");
|
|
card->info.broadcast_capable = 0;
|
|
if (!qeth_is_supported(card, IPA_FILTERING)) {
|
|
dev_info(&card->gdev->dev,
|
|
"Broadcast not supported on %s\n",
|
|
netdev_name(card->dev));
|
|
rc = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
|
|
IPA_CMD_ASS_START, NULL);
|
|
if (rc) {
|
|
dev_warn(&card->gdev->dev,
|
|
"Enabling broadcast filtering for %s failed\n",
|
|
netdev_name(card->dev));
|
|
goto out;
|
|
}
|
|
|
|
rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
|
|
IPA_CMD_ASS_CONFIGURE, &filter_data);
|
|
if (rc) {
|
|
dev_warn(&card->gdev->dev,
|
|
"Setting up broadcast filtering for %s failed\n",
|
|
netdev_name(card->dev));
|
|
goto out;
|
|
}
|
|
card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
|
|
dev_info(&card->gdev->dev, "Broadcast enabled\n");
|
|
rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
|
|
IPA_CMD_ASS_ENABLE, &filter_data);
|
|
if (rc) {
|
|
dev_warn(&card->gdev->dev,
|
|
"Setting up broadcast echo filtering for %s failed\n",
|
|
netdev_name(card->dev));
|
|
goto out;
|
|
}
|
|
card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
|
|
out:
|
|
if (card->info.broadcast_capable)
|
|
card->dev->flags |= IFF_BROADCAST;
|
|
else
|
|
card->dev->flags &= ~IFF_BROADCAST;
|
|
return rc;
|
|
}
|
|
|
|
static void qeth_l3_start_ipassists(struct qeth_card *card)
|
|
{
|
|
QETH_CARD_TEXT(card, 3, "strtipas");
|
|
|
|
qeth_l3_start_ipa_arp_processing(card); /* go on*/
|
|
qeth_l3_start_ipa_source_mac(card); /* go on*/
|
|
qeth_l3_start_ipa_vlan(card); /* go on*/
|
|
qeth_l3_start_ipa_multicast(card); /* go on*/
|
|
qeth_l3_start_ipa_ipv6(card); /* go on*/
|
|
qeth_l3_start_ipa_broadcast(card); /* go on*/
|
|
}
|
|
|
|
static int qeth_l3_iqd_read_initial_mac_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)
|
|
return -EIO;
|
|
if (!is_valid_ether_addr(cmd->data.create_destroy_addr.mac_addr))
|
|
return -EADDRNOTAVAIL;
|
|
|
|
eth_hw_addr_set(card->dev, cmd->data.create_destroy_addr.mac_addr);
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
|
|
{
|
|
int rc = 0;
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT(card, 2, "hsrmac");
|
|
|
|
iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
|
|
IPA_DATA_SIZEOF(create_destroy_addr));
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
|
|
NULL);
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply, unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
|
|
u16 *uid = reply->param;
|
|
|
|
if (cmd->hdr.return_code == 0) {
|
|
*uid = cmd->data.create_destroy_addr.uid;
|
|
return 0;
|
|
}
|
|
|
|
dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n");
|
|
return -EIO;
|
|
}
|
|
|
|
static u16 qeth_l3_get_unique_id(struct qeth_card *card, u16 uid)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT(card, 2, "guniqeid");
|
|
|
|
if (!qeth_is_supported(card, IPA_IPV6))
|
|
goto out;
|
|
|
|
iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
|
|
IPA_DATA_SIZEOF(create_destroy_addr));
|
|
if (!iob)
|
|
goto out;
|
|
|
|
__ipa_cmd(iob)->data.create_destroy_addr.uid = uid;
|
|
qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, &uid);
|
|
|
|
out:
|
|
return uid;
|
|
}
|
|
|
|
static int
|
|
qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
|
|
unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd;
|
|
__u16 rc;
|
|
|
|
QETH_CARD_TEXT(card, 2, "diastrcb");
|
|
|
|
cmd = (struct qeth_ipa_cmd *)data;
|
|
rc = cmd->hdr.return_code;
|
|
if (rc)
|
|
QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
|
|
switch (cmd->data.diagass.action) {
|
|
case QETH_DIAGS_CMD_TRACE_QUERY:
|
|
break;
|
|
case QETH_DIAGS_CMD_TRACE_DISABLE:
|
|
switch (rc) {
|
|
case 0:
|
|
case IPA_RC_INVALID_SUBCMD:
|
|
card->info.promisc_mode = SET_PROMISC_MODE_OFF;
|
|
dev_info(&card->gdev->dev, "The HiperSockets network "
|
|
"traffic analyzer is deactivated\n");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
case QETH_DIAGS_CMD_TRACE_ENABLE:
|
|
switch (rc) {
|
|
case 0:
|
|
card->info.promisc_mode = SET_PROMISC_MODE_ON;
|
|
dev_info(&card->gdev->dev, "The HiperSockets network "
|
|
"traffic analyzer is activated\n");
|
|
break;
|
|
case IPA_RC_HARDWARE_AUTH_ERROR:
|
|
dev_warn(&card->gdev->dev, "The device is not "
|
|
"authorized to run as a HiperSockets network "
|
|
"traffic analyzer\n");
|
|
break;
|
|
case IPA_RC_TRACE_ALREADY_ACTIVE:
|
|
dev_warn(&card->gdev->dev, "A HiperSockets "
|
|
"network traffic analyzer is already "
|
|
"active in the HiperSockets LAN\n");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n",
|
|
cmd->data.diagass.action, CARD_DEVID(card));
|
|
}
|
|
|
|
return rc ? -EIO : 0;
|
|
}
|
|
|
|
static int
|
|
qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
struct qeth_ipa_cmd *cmd;
|
|
|
|
QETH_CARD_TEXT(card, 2, "diagtrac");
|
|
|
|
iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRACE, 0);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
cmd = __ipa_cmd(iob);
|
|
cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
|
|
cmd->data.diagass.action = diags_cmd;
|
|
return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
|
|
}
|
|
|
|
static int qeth_l3_add_mcast_rtnl(struct net_device *dev, int vid, void *arg)
|
|
{
|
|
struct qeth_card *card = arg;
|
|
struct inet6_dev *in6_dev;
|
|
struct in_device *in4_dev;
|
|
struct qeth_ipaddr *ipm;
|
|
struct qeth_ipaddr tmp;
|
|
struct ip_mc_list *im4;
|
|
struct ifmcaddr6 *im6;
|
|
|
|
QETH_CARD_TEXT(card, 4, "addmc");
|
|
|
|
if (!dev || !(dev->flags & IFF_UP))
|
|
goto out;
|
|
|
|
in4_dev = __in_dev_get_rtnl(dev);
|
|
if (!in4_dev)
|
|
goto walk_ipv6;
|
|
|
|
qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
|
|
tmp.disp_flag = QETH_DISP_ADDR_ADD;
|
|
tmp.is_multicast = 1;
|
|
|
|
for (im4 = rtnl_dereference(in4_dev->mc_list); im4 != NULL;
|
|
im4 = rtnl_dereference(im4->next_rcu)) {
|
|
tmp.u.a4.addr = im4->multiaddr;
|
|
|
|
ipm = qeth_l3_find_addr_by_ip(card, &tmp);
|
|
if (ipm) {
|
|
/* for mcast, by-IP match means full match */
|
|
ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
|
|
continue;
|
|
}
|
|
|
|
ipm = kmemdup(&tmp, sizeof(tmp), GFP_KERNEL);
|
|
if (!ipm)
|
|
continue;
|
|
|
|
hash_add(card->rx_mode_addrs, &ipm->hnode,
|
|
qeth_l3_ipaddr_hash(ipm));
|
|
}
|
|
|
|
walk_ipv6:
|
|
if (!qeth_is_supported(card, IPA_IPV6))
|
|
goto out;
|
|
|
|
in6_dev = __in6_dev_get(dev);
|
|
if (!in6_dev)
|
|
goto out;
|
|
|
|
qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
|
|
tmp.disp_flag = QETH_DISP_ADDR_ADD;
|
|
tmp.is_multicast = 1;
|
|
|
|
for (im6 = rtnl_dereference(in6_dev->mc_list);
|
|
im6;
|
|
im6 = rtnl_dereference(im6->next)) {
|
|
tmp.u.a6.addr = im6->mca_addr;
|
|
|
|
ipm = qeth_l3_find_addr_by_ip(card, &tmp);
|
|
if (ipm) {
|
|
/* for mcast, by-IP match means full match */
|
|
ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
|
|
continue;
|
|
}
|
|
|
|
ipm = kmemdup(&tmp, sizeof(tmp), GFP_ATOMIC);
|
|
if (!ipm)
|
|
continue;
|
|
|
|
hash_add(card->rx_mode_addrs, &ipm->hnode,
|
|
qeth_l3_ipaddr_hash(ipm));
|
|
|
|
}
|
|
|
|
out:
|
|
return 0;
|
|
}
|
|
|
|
static void qeth_l3_set_promisc_mode(struct qeth_card *card)
|
|
{
|
|
bool enable = card->dev->flags & IFF_PROMISC;
|
|
|
|
if (card->info.promisc_mode == enable)
|
|
return;
|
|
|
|
if (IS_VM_NIC(card)) { /* Guestlan trace */
|
|
if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
|
|
qeth_setadp_promisc_mode(card, enable);
|
|
} else if (card->options.sniffer && /* HiperSockets trace */
|
|
qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
|
|
if (enable) {
|
|
QETH_CARD_TEXT(card, 3, "+promisc");
|
|
qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
|
|
} else {
|
|
QETH_CARD_TEXT(card, 3, "-promisc");
|
|
qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void qeth_l3_rx_mode_work(struct work_struct *work)
|
|
{
|
|
struct qeth_card *card = container_of(work, struct qeth_card,
|
|
rx_mode_work);
|
|
struct qeth_ipaddr *addr;
|
|
struct hlist_node *tmp;
|
|
int i, rc;
|
|
|
|
QETH_CARD_TEXT(card, 3, "setmulti");
|
|
|
|
if (!card->options.sniffer) {
|
|
rtnl_lock();
|
|
qeth_l3_add_mcast_rtnl(card->dev, 0, card);
|
|
if (qeth_is_supported(card, IPA_FULL_VLAN))
|
|
vlan_for_each(card->dev, qeth_l3_add_mcast_rtnl, card);
|
|
rtnl_unlock();
|
|
|
|
hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) {
|
|
switch (addr->disp_flag) {
|
|
case QETH_DISP_ADDR_DELETE:
|
|
rc = qeth_l3_deregister_addr_entry(card, addr);
|
|
if (!rc || rc == -ENOENT) {
|
|
hash_del(&addr->hnode);
|
|
kfree(addr);
|
|
}
|
|
break;
|
|
case QETH_DISP_ADDR_ADD:
|
|
rc = qeth_l3_register_addr_entry(card, addr);
|
|
if (rc && rc != -ENETDOWN) {
|
|
hash_del(&addr->hnode);
|
|
kfree(addr);
|
|
break;
|
|
}
|
|
fallthrough;
|
|
default:
|
|
/* for next call to set_rx_mode(): */
|
|
addr->disp_flag = QETH_DISP_ADDR_DELETE;
|
|
}
|
|
}
|
|
}
|
|
|
|
qeth_l3_set_promisc_mode(card);
|
|
}
|
|
|
|
static int qeth_l3_arp_makerc(u16 rc)
|
|
{
|
|
switch (rc) {
|
|
case IPA_RC_SUCCESS:
|
|
return 0;
|
|
case QETH_IPA_ARP_RC_NOTSUPP:
|
|
case QETH_IPA_ARP_RC_Q_NOTSUPP:
|
|
return -EOPNOTSUPP;
|
|
case QETH_IPA_ARP_RC_OUT_OF_RANGE:
|
|
return -EINVAL;
|
|
case QETH_IPA_ARP_RC_Q_NO_DATA:
|
|
return -ENOENT;
|
|
default:
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply,
|
|
unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
|
|
|
|
qeth_setassparms_cb(card, reply, data);
|
|
return qeth_l3_arp_makerc(cmd->hdr.return_code);
|
|
}
|
|
|
|
static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 3, "arpstnoe");
|
|
|
|
/*
|
|
* currently GuestLAN only supports the ARP assist function
|
|
* IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
|
|
* thus we say EOPNOTSUPP for this ARP function
|
|
*/
|
|
if (IS_VM_NIC(card))
|
|
return -EOPNOTSUPP;
|
|
if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
|
|
IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
|
|
SETASS_DATA_SIZEOF(flags_32bit),
|
|
QETH_PROT_IPV4);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
__ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries;
|
|
rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
|
|
if (rc)
|
|
QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n",
|
|
CARD_DEVID(card), rc);
|
|
return rc;
|
|
}
|
|
|
|
static __u32 get_arp_entry_size(struct qeth_card *card,
|
|
struct qeth_arp_query_data *qdata,
|
|
struct qeth_arp_entrytype *type, __u8 strip_entries)
|
|
{
|
|
__u32 rc;
|
|
__u8 is_hsi;
|
|
|
|
is_hsi = qdata->reply_bits == 5;
|
|
if (type->ip == QETHARP_IP_ADDR_V4) {
|
|
QETH_CARD_TEXT(card, 4, "arpev4");
|
|
if (strip_entries) {
|
|
rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
|
|
sizeof(struct qeth_arp_qi_entry7_short);
|
|
} else {
|
|
rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
|
|
sizeof(struct qeth_arp_qi_entry7);
|
|
}
|
|
} else if (type->ip == QETHARP_IP_ADDR_V6) {
|
|
QETH_CARD_TEXT(card, 4, "arpev6");
|
|
if (strip_entries) {
|
|
rc = is_hsi ?
|
|
sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
|
|
sizeof(struct qeth_arp_qi_entry7_short_ipv6);
|
|
} else {
|
|
rc = is_hsi ?
|
|
sizeof(struct qeth_arp_qi_entry5_ipv6) :
|
|
sizeof(struct qeth_arp_qi_entry7_ipv6);
|
|
}
|
|
} else {
|
|
QETH_CARD_TEXT(card, 4, "arpinv");
|
|
rc = 0;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
|
|
{
|
|
return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
|
|
(type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
|
|
}
|
|
|
|
static int qeth_l3_arp_query_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply, unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd;
|
|
struct qeth_arp_query_data *qdata;
|
|
struct qeth_arp_query_info *qinfo;
|
|
int e;
|
|
int entrybytes_done;
|
|
int stripped_bytes;
|
|
__u8 do_strip_entries;
|
|
|
|
QETH_CARD_TEXT(card, 3, "arpquecb");
|
|
|
|
qinfo = (struct qeth_arp_query_info *) reply->param;
|
|
cmd = (struct qeth_ipa_cmd *) data;
|
|
QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
|
|
if (cmd->hdr.return_code) {
|
|
QETH_CARD_TEXT(card, 4, "arpcberr");
|
|
QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
|
|
return qeth_l3_arp_makerc(cmd->hdr.return_code);
|
|
}
|
|
if (cmd->data.setassparms.hdr.return_code) {
|
|
cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
|
|
QETH_CARD_TEXT(card, 4, "setaperr");
|
|
QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
|
|
return qeth_l3_arp_makerc(cmd->hdr.return_code);
|
|
}
|
|
qdata = &cmd->data.setassparms.data.query_arp;
|
|
QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
|
|
|
|
do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
|
|
stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
|
|
entrybytes_done = 0;
|
|
for (e = 0; e < qdata->no_entries; ++e) {
|
|
char *cur_entry;
|
|
__u32 esize;
|
|
struct qeth_arp_entrytype *etype;
|
|
|
|
cur_entry = &qdata->data + entrybytes_done;
|
|
etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
|
|
if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
|
|
QETH_CARD_TEXT(card, 4, "pmis");
|
|
QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
|
|
break;
|
|
}
|
|
esize = get_arp_entry_size(card, qdata, etype,
|
|
do_strip_entries);
|
|
QETH_CARD_TEXT_(card, 5, "esz%i", esize);
|
|
if (!esize)
|
|
break;
|
|
|
|
if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
|
|
QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC);
|
|
memset(qinfo->udata, 0, 4);
|
|
return -ENOSPC;
|
|
}
|
|
|
|
memcpy(qinfo->udata + qinfo->udata_offset,
|
|
&qdata->data + entrybytes_done + stripped_bytes,
|
|
esize);
|
|
entrybytes_done += esize + stripped_bytes;
|
|
qinfo->udata_offset += esize;
|
|
++qinfo->no_entries;
|
|
}
|
|
/* check if all replies received ... */
|
|
if (cmd->data.setassparms.hdr.seq_no <
|
|
cmd->data.setassparms.hdr.number_of_replies)
|
|
return 1;
|
|
QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
|
|
memcpy(qinfo->udata, &qinfo->no_entries, 4);
|
|
/* keep STRIP_ENTRIES flag so the user program can distinguish
|
|
* stripped entries from normal ones */
|
|
if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
|
|
qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
|
|
memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
|
|
QETH_CARD_TEXT_(card, 4, "rc%i", 0);
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
|
|
enum qeth_prot_versions prot,
|
|
struct qeth_arp_query_info *qinfo)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
struct qeth_ipa_cmd *cmd;
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
|
|
|
|
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
|
|
IPA_CMD_ASS_ARP_QUERY_INFO,
|
|
SETASS_DATA_SIZEOF(query_arp), prot);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
cmd = __ipa_cmd(iob);
|
|
cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
|
|
rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo);
|
|
if (rc)
|
|
QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n",
|
|
CARD_DEVID(card), rc);
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
|
|
{
|
|
struct qeth_arp_query_info qinfo = {0, };
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 3, "arpquery");
|
|
|
|
if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
|
|
IPA_ARP_PROCESSING)) {
|
|
QETH_CARD_TEXT(card, 3, "arpqnsup");
|
|
rc = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
/* get size of userspace buffer and mask_bits -> 6 bytes */
|
|
if (copy_from_user(&qinfo, udata, 6)) {
|
|
rc = -EFAULT;
|
|
goto out;
|
|
}
|
|
qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
|
|
if (!qinfo.udata) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
|
|
rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
|
|
if (rc) {
|
|
if (copy_to_user(udata, qinfo.udata, 4))
|
|
rc = -EFAULT;
|
|
goto free_and_out;
|
|
}
|
|
if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
|
|
/* fails in case of GuestLAN QDIO mode */
|
|
qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
|
|
}
|
|
if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
|
|
QETH_CARD_TEXT(card, 4, "qactf");
|
|
rc = -EFAULT;
|
|
goto free_and_out;
|
|
}
|
|
QETH_CARD_TEXT(card, 4, "qacts");
|
|
|
|
free_and_out:
|
|
kfree(qinfo.udata);
|
|
out:
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_l3_arp_modify_entry(struct qeth_card *card,
|
|
struct qeth_arp_cache_entry *entry,
|
|
enum qeth_arp_process_subcmds arp_cmd)
|
|
{
|
|
struct qeth_arp_cache_entry *cmd_entry;
|
|
struct qeth_cmd_buffer *iob;
|
|
int rc;
|
|
|
|
if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY)
|
|
QETH_CARD_TEXT(card, 3, "arpadd");
|
|
else
|
|
QETH_CARD_TEXT(card, 3, "arpdel");
|
|
|
|
/*
|
|
* currently GuestLAN only supports the ARP assist function
|
|
* IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
|
|
* thus we say EOPNOTSUPP for this ARP function
|
|
*/
|
|
if (IS_VM_NIC(card))
|
|
return -EOPNOTSUPP;
|
|
if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd,
|
|
SETASS_DATA_SIZEOF(arp_entry),
|
|
QETH_PROT_IPV4);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry;
|
|
ether_addr_copy(cmd_entry->macaddr, entry->macaddr);
|
|
memcpy(cmd_entry->ipaddr, entry->ipaddr, 4);
|
|
rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
|
|
if (rc)
|
|
QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n",
|
|
arp_cmd, CARD_DEVID(card), rc);
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_l3_arp_flush_cache(struct qeth_card *card)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
int rc;
|
|
|
|
QETH_CARD_TEXT(card, 3, "arpflush");
|
|
|
|
/*
|
|
* currently GuestLAN only supports the ARP assist function
|
|
* IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
|
|
* thus we say EOPNOTSUPP for this ARP function
|
|
*/
|
|
if (IS_VM_NIC(card) || IS_IQD(card))
|
|
return -EOPNOTSUPP;
|
|
if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
|
|
IPA_CMD_ASS_ARP_FLUSH_CACHE, 0,
|
|
QETH_PROT_IPV4);
|
|
if (!iob)
|
|
return -ENOMEM;
|
|
|
|
rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
|
|
if (rc)
|
|
QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n",
|
|
CARD_DEVID(card), rc);
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_l3_ndo_siocdevprivate(struct net_device *dev, struct ifreq *rq,
|
|
void __user *data, int cmd)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
struct qeth_arp_cache_entry arp_entry;
|
|
enum qeth_arp_process_subcmds arp_cmd;
|
|
int rc = 0;
|
|
|
|
switch (cmd) {
|
|
case SIOC_QETH_ARP_SET_NO_ENTRIES:
|
|
if (!capable(CAP_NET_ADMIN)) {
|
|
rc = -EPERM;
|
|
break;
|
|
}
|
|
rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
|
|
break;
|
|
case SIOC_QETH_ARP_QUERY_INFO:
|
|
if (!capable(CAP_NET_ADMIN)) {
|
|
rc = -EPERM;
|
|
break;
|
|
}
|
|
rc = qeth_l3_arp_query(card, data);
|
|
break;
|
|
case SIOC_QETH_ARP_ADD_ENTRY:
|
|
case SIOC_QETH_ARP_REMOVE_ENTRY:
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
if (copy_from_user(&arp_entry, data, sizeof(arp_entry)))
|
|
return -EFAULT;
|
|
|
|
arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ?
|
|
IPA_CMD_ASS_ARP_ADD_ENTRY :
|
|
IPA_CMD_ASS_ARP_REMOVE_ENTRY;
|
|
return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd);
|
|
case SIOC_QETH_ARP_FLUSH_CACHE:
|
|
if (!capable(CAP_NET_ADMIN)) {
|
|
rc = -EPERM;
|
|
break;
|
|
}
|
|
rc = qeth_l3_arp_flush_cache(card);
|
|
break;
|
|
default:
|
|
rc = qeth_siocdevprivate(dev, rq, data, cmd);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst,
|
|
__be16 proto)
|
|
{
|
|
struct neighbour *n = NULL;
|
|
|
|
if (dst)
|
|
n = dst_neigh_lookup_skb(dst, skb);
|
|
|
|
if (n) {
|
|
int cast_type = n->type;
|
|
|
|
neigh_release(n);
|
|
if ((cast_type == RTN_BROADCAST) ||
|
|
(cast_type == RTN_MULTICAST) ||
|
|
(cast_type == RTN_ANYCAST))
|
|
return cast_type;
|
|
return RTN_UNICAST;
|
|
}
|
|
|
|
/* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
|
|
switch (proto) {
|
|
case htons(ETH_P_IP):
|
|
if (ipv4_is_lbcast(ip_hdr(skb)->daddr))
|
|
return RTN_BROADCAST;
|
|
return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
|
|
RTN_MULTICAST : RTN_UNICAST;
|
|
case htons(ETH_P_IPV6):
|
|
return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
|
|
RTN_MULTICAST : RTN_UNICAST;
|
|
case htons(ETH_P_AF_IUCV):
|
|
return RTN_UNICAST;
|
|
default:
|
|
/* OSA only: ... and MAC address */
|
|
return qeth_get_ether_cast_type(skb);
|
|
}
|
|
}
|
|
|
|
static int qeth_l3_get_cast_type(struct sk_buff *skb, __be16 proto)
|
|
{
|
|
struct dst_entry *dst;
|
|
int cast_type;
|
|
|
|
rcu_read_lock();
|
|
dst = qeth_dst_check_rcu(skb, proto);
|
|
cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto);
|
|
rcu_read_unlock();
|
|
|
|
return cast_type;
|
|
}
|
|
|
|
static u8 qeth_l3_cast_type_to_flag(int cast_type)
|
|
{
|
|
if (cast_type == RTN_MULTICAST)
|
|
return QETH_CAST_MULTICAST;
|
|
if (cast_type == RTN_ANYCAST)
|
|
return QETH_CAST_ANYCAST;
|
|
if (cast_type == RTN_BROADCAST)
|
|
return QETH_CAST_BROADCAST;
|
|
return QETH_CAST_UNICAST;
|
|
}
|
|
|
|
static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
|
|
struct qeth_hdr *hdr, struct sk_buff *skb,
|
|
__be16 proto, unsigned int data_len)
|
|
{
|
|
struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
|
|
struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
|
|
struct qeth_card *card = queue->card;
|
|
struct dst_entry *dst;
|
|
int cast_type;
|
|
|
|
hdr->hdr.l3.length = data_len;
|
|
|
|
if (skb_is_gso(skb)) {
|
|
hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
|
|
} else {
|
|
hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
|
|
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL) {
|
|
qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, proto);
|
|
/* some HW requires combined L3+L4 csum offload: */
|
|
if (proto == htons(ETH_P_IP))
|
|
hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
|
|
}
|
|
}
|
|
|
|
if (proto == htons(ETH_P_IP) || IS_IQD(card)) {
|
|
/* NETIF_F_HW_VLAN_CTAG_TX */
|
|
if (skb_vlan_tag_present(skb)) {
|
|
hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
|
|
hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
|
|
}
|
|
} else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
|
|
hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
|
|
hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
|
|
}
|
|
|
|
rcu_read_lock();
|
|
dst = qeth_dst_check_rcu(skb, proto);
|
|
|
|
if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ)
|
|
cast_type = RTN_UNICAST;
|
|
else
|
|
cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto);
|
|
l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type);
|
|
|
|
switch (proto) {
|
|
case htons(ETH_P_IP):
|
|
l3_hdr->next_hop.addr.s6_addr32[3] =
|
|
qeth_next_hop_v4_rcu(skb, dst);
|
|
break;
|
|
case htons(ETH_P_IPV6):
|
|
l3_hdr->next_hop.addr = *qeth_next_hop_v6_rcu(skb, dst);
|
|
|
|
hdr->hdr.l3.flags |= QETH_HDR_IPV6;
|
|
if (!IS_IQD(card))
|
|
hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
|
|
break;
|
|
case htons(ETH_P_AF_IUCV):
|
|
l3_hdr->next_hop.addr.s6_addr16[0] = htons(0xfe80);
|
|
memcpy(&l3_hdr->next_hop.addr.s6_addr32[2],
|
|
iucv_trans_hdr(skb)->destUserID, 8);
|
|
l3_hdr->flags |= QETH_HDR_IPV6;
|
|
break;
|
|
default:
|
|
/* OSA only: */
|
|
l3_hdr->flags |= QETH_HDR_PASSTHRU;
|
|
}
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
static void qeth_l3_fixup_headers(struct sk_buff *skb)
|
|
{
|
|
struct iphdr *iph = ip_hdr(skb);
|
|
|
|
/* this is safe, IPv6 traffic takes a different path */
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL)
|
|
iph->check = 0;
|
|
if (skb_is_gso(skb)) {
|
|
iph->tot_len = 0;
|
|
tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
|
|
iph->daddr, 0);
|
|
}
|
|
}
|
|
|
|
static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
|
|
struct qeth_qdio_out_q *queue, __be16 proto)
|
|
{
|
|
unsigned int hw_hdr_len;
|
|
int rc;
|
|
|
|
/* re-use the L2 header area for the HW header: */
|
|
hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
|
|
sizeof(struct qeth_hdr);
|
|
rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
|
|
if (rc)
|
|
return rc;
|
|
skb_pull(skb, ETH_HLEN);
|
|
|
|
qeth_l3_fixup_headers(skb);
|
|
return qeth_xmit(card, skb, queue, proto, qeth_l3_fill_header);
|
|
}
|
|
|
|
static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
|
|
struct net_device *dev)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
__be16 proto = vlan_get_protocol(skb);
|
|
u16 txq = skb_get_queue_mapping(skb);
|
|
struct qeth_qdio_out_q *queue;
|
|
int rc;
|
|
|
|
if (!skb_is_gso(skb))
|
|
qdisc_skb_cb(skb)->pkt_len = skb->len;
|
|
if (IS_IQD(card)) {
|
|
queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)];
|
|
|
|
if (card->options.sniffer)
|
|
goto tx_drop;
|
|
|
|
switch (proto) {
|
|
case htons(ETH_P_AF_IUCV):
|
|
if (card->options.cq != QETH_CQ_ENABLED)
|
|
goto tx_drop;
|
|
break;
|
|
case htons(ETH_P_IP):
|
|
case htons(ETH_P_IPV6):
|
|
if (card->options.cq == QETH_CQ_ENABLED)
|
|
goto tx_drop;
|
|
break;
|
|
default:
|
|
goto tx_drop;
|
|
}
|
|
} else {
|
|
queue = card->qdio.out_qs[txq];
|
|
}
|
|
|
|
if (!(dev->flags & IFF_BROADCAST) &&
|
|
qeth_l3_get_cast_type(skb, proto) == RTN_BROADCAST)
|
|
goto tx_drop;
|
|
|
|
if (proto == htons(ETH_P_IP) || IS_IQD(card))
|
|
rc = qeth_l3_xmit(card, skb, queue, proto);
|
|
else
|
|
rc = qeth_xmit(card, skb, queue, proto, qeth_l3_fill_header);
|
|
|
|
if (!rc)
|
|
return NETDEV_TX_OK;
|
|
|
|
tx_drop:
|
|
QETH_TXQ_STAT_INC(queue, tx_dropped);
|
|
kfree_skb(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static void qeth_l3_set_rx_mode(struct net_device *dev)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
|
|
schedule_work(&card->rx_mode_work);
|
|
}
|
|
|
|
/*
|
|
* we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
|
|
* NOARP on the netdevice is no option because it also turns off neighbor
|
|
* solicitation. For IPv4 we install a neighbor_setup function. We don't want
|
|
* arp resolution but we want the hard header (packet socket will work
|
|
* e.g. tcpdump)
|
|
*/
|
|
static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
|
|
{
|
|
n->nud_state = NUD_NOARP;
|
|
memcpy(n->ha, "FAKELL", 6);
|
|
n->output = n->ops->connected_output;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
|
|
{
|
|
if (np->tbl->family == AF_INET)
|
|
np->neigh_setup = qeth_l3_neigh_setup_noarp;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
|
|
struct net_device *dev,
|
|
netdev_features_t features)
|
|
{
|
|
if (vlan_get_protocol(skb) != htons(ETH_P_IP))
|
|
features &= ~NETIF_F_HW_VLAN_CTAG_TX;
|
|
return qeth_features_check(skb, dev, features);
|
|
}
|
|
|
|
static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
|
|
struct net_device *sb_dev)
|
|
{
|
|
__be16 proto = vlan_get_protocol(skb);
|
|
|
|
return qeth_iqd_select_queue(dev, skb,
|
|
qeth_l3_get_cast_type(skb, proto), sb_dev);
|
|
}
|
|
|
|
static const struct net_device_ops qeth_l3_netdev_ops = {
|
|
.ndo_open = qeth_open,
|
|
.ndo_stop = qeth_stop,
|
|
.ndo_get_stats64 = qeth_get_stats64,
|
|
.ndo_start_xmit = qeth_l3_hard_start_xmit,
|
|
.ndo_select_queue = qeth_l3_iqd_select_queue,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_set_rx_mode = qeth_l3_set_rx_mode,
|
|
.ndo_eth_ioctl = qeth_do_ioctl,
|
|
.ndo_siocdevprivate = qeth_l3_ndo_siocdevprivate,
|
|
.ndo_fix_features = qeth_fix_features,
|
|
.ndo_set_features = qeth_set_features,
|
|
.ndo_tx_timeout = qeth_tx_timeout,
|
|
};
|
|
|
|
static const struct net_device_ops qeth_l3_osa_netdev_ops = {
|
|
.ndo_open = qeth_open,
|
|
.ndo_stop = qeth_stop,
|
|
.ndo_get_stats64 = qeth_get_stats64,
|
|
.ndo_start_xmit = qeth_l3_hard_start_xmit,
|
|
.ndo_features_check = qeth_l3_osa_features_check,
|
|
.ndo_select_queue = qeth_osa_select_queue,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_set_rx_mode = qeth_l3_set_rx_mode,
|
|
.ndo_eth_ioctl = qeth_do_ioctl,
|
|
.ndo_siocdevprivate = qeth_l3_ndo_siocdevprivate,
|
|
.ndo_fix_features = qeth_fix_features,
|
|
.ndo_set_features = qeth_set_features,
|
|
.ndo_tx_timeout = qeth_tx_timeout,
|
|
.ndo_neigh_setup = qeth_l3_neigh_setup,
|
|
};
|
|
|
|
static int qeth_l3_setup_netdev(struct qeth_card *card)
|
|
{
|
|
struct net_device *dev = card->dev;
|
|
unsigned int headroom;
|
|
int rc;
|
|
|
|
if (IS_OSD(card) || IS_OSX(card)) {
|
|
card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
|
|
|
|
/*IPv6 address autoconfiguration stuff*/
|
|
dev->dev_id = qeth_l3_get_unique_id(card, dev->dev_id);
|
|
|
|
if (!IS_VM_NIC(card)) {
|
|
card->dev->features |= NETIF_F_SG;
|
|
card->dev->hw_features |= NETIF_F_TSO |
|
|
NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
|
|
card->dev->vlan_features |= NETIF_F_TSO |
|
|
NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
|
|
}
|
|
|
|
if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
|
|
card->dev->hw_features |= NETIF_F_IPV6_CSUM;
|
|
card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
|
|
}
|
|
if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
|
|
card->dev->hw_features |= NETIF_F_TSO6;
|
|
card->dev->vlan_features |= NETIF_F_TSO6;
|
|
}
|
|
|
|
/* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */
|
|
if (card->dev->hw_features & NETIF_F_TSO6)
|
|
headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
|
|
else if (card->dev->hw_features & NETIF_F_TSO)
|
|
headroom = sizeof(struct qeth_hdr_tso);
|
|
else
|
|
headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
|
|
} else if (IS_IQD(card)) {
|
|
card->dev->flags |= IFF_NOARP;
|
|
card->dev->netdev_ops = &qeth_l3_netdev_ops;
|
|
headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
|
|
|
|
rc = qeth_l3_iqd_read_initial_mac(card);
|
|
if (rc)
|
|
return rc;
|
|
} else
|
|
return -ENODEV;
|
|
|
|
card->dev->needed_headroom = headroom;
|
|
card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
|
|
NETIF_F_HW_VLAN_CTAG_RX;
|
|
|
|
netif_keep_dst(card->dev);
|
|
if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
|
|
netif_set_tso_max_size(card->dev,
|
|
PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
|
|
|
|
netif_napi_add(card->dev, &card->napi, qeth_poll, NAPI_POLL_WEIGHT);
|
|
return register_netdev(card->dev);
|
|
}
|
|
|
|
static const struct device_type qeth_l3_devtype = {
|
|
.name = "qeth_layer3",
|
|
.groups = qeth_l3_attr_groups,
|
|
};
|
|
|
|
static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
|
|
{
|
|
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
|
|
int rc;
|
|
|
|
hash_init(card->ip_htable);
|
|
mutex_init(&card->ip_lock);
|
|
card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0,
|
|
dev_name(&gdev->dev));
|
|
if (!card->cmd_wq)
|
|
return -ENOMEM;
|
|
|
|
if (gdev->dev.type) {
|
|
rc = device_add_groups(&gdev->dev, qeth_l3_attr_groups);
|
|
if (rc) {
|
|
destroy_workqueue(card->cmd_wq);
|
|
return rc;
|
|
}
|
|
} else {
|
|
gdev->dev.type = &qeth_l3_devtype;
|
|
}
|
|
|
|
INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work);
|
|
return 0;
|
|
}
|
|
|
|
static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
|
|
{
|
|
struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
|
|
|
|
if (cgdev->dev.type != &qeth_l3_devtype)
|
|
device_remove_groups(&cgdev->dev, qeth_l3_attr_groups);
|
|
|
|
qeth_set_allowed_threads(card, 0, 1);
|
|
wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
|
|
|
|
if (cgdev->state == CCWGROUP_ONLINE)
|
|
qeth_set_offline(card, card->discipline, false);
|
|
|
|
if (card->dev->reg_state == NETREG_REGISTERED)
|
|
unregister_netdev(card->dev);
|
|
|
|
destroy_workqueue(card->cmd_wq);
|
|
qeth_l3_clear_ip_htable(card, 0);
|
|
qeth_l3_clear_ipato_list(card);
|
|
}
|
|
|
|
static int qeth_l3_set_online(struct qeth_card *card, bool carrier_ok)
|
|
{
|
|
struct net_device *dev = card->dev;
|
|
int rc = 0;
|
|
|
|
/* softsetup */
|
|
QETH_CARD_TEXT(card, 2, "softsetp");
|
|
|
|
rc = qeth_l3_setadapter_parms(card);
|
|
if (rc)
|
|
QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
|
|
if (!card->options.sniffer) {
|
|
qeth_l3_start_ipassists(card);
|
|
|
|
rc = qeth_l3_setrouting_v4(card);
|
|
if (rc)
|
|
QETH_CARD_TEXT_(card, 2, "4err%04x", rc);
|
|
rc = qeth_l3_setrouting_v6(card);
|
|
if (rc)
|
|
QETH_CARD_TEXT_(card, 2, "5err%04x", rc);
|
|
}
|
|
|
|
card->state = CARD_STATE_SOFTSETUP;
|
|
|
|
qeth_set_allowed_threads(card, 0xffffffff, 0);
|
|
qeth_l3_recover_ip(card);
|
|
|
|
if (dev->reg_state != NETREG_REGISTERED) {
|
|
rc = qeth_l3_setup_netdev(card);
|
|
if (rc)
|
|
goto err_setup;
|
|
|
|
if (carrier_ok)
|
|
netif_carrier_on(dev);
|
|
} else {
|
|
rtnl_lock();
|
|
rc = qeth_set_real_num_tx_queues(card,
|
|
qeth_tx_actual_queues(card));
|
|
if (rc) {
|
|
rtnl_unlock();
|
|
goto err_set_queues;
|
|
}
|
|
|
|
if (carrier_ok)
|
|
netif_carrier_on(dev);
|
|
else
|
|
netif_carrier_off(dev);
|
|
|
|
netif_device_attach(dev);
|
|
qeth_enable_hw_features(dev);
|
|
|
|
if (card->info.open_when_online) {
|
|
card->info.open_when_online = 0;
|
|
dev_open(dev, NULL);
|
|
}
|
|
rtnl_unlock();
|
|
}
|
|
return 0;
|
|
|
|
err_set_queues:
|
|
err_setup:
|
|
qeth_set_allowed_threads(card, 0, 1);
|
|
card->state = CARD_STATE_DOWN;
|
|
qeth_l3_clear_ip_htable(card, 1);
|
|
return rc;
|
|
}
|
|
|
|
static void qeth_l3_set_offline(struct qeth_card *card)
|
|
{
|
|
qeth_set_allowed_threads(card, 0, 1);
|
|
qeth_l3_drain_rx_mode_cache(card);
|
|
|
|
if (card->options.sniffer &&
|
|
(card->info.promisc_mode == SET_PROMISC_MODE_ON))
|
|
qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
|
|
|
|
if (card->state == CARD_STATE_SOFTSETUP) {
|
|
card->state = CARD_STATE_DOWN;
|
|
qeth_l3_clear_ip_htable(card, 1);
|
|
}
|
|
}
|
|
|
|
/* Returns zero if the command is successfully "consumed" */
|
|
static int qeth_l3_control_event(struct qeth_card *card,
|
|
struct qeth_ipa_cmd *cmd)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
const struct qeth_discipline qeth_l3_discipline = {
|
|
.setup = qeth_l3_probe_device,
|
|
.remove = qeth_l3_remove_device,
|
|
.set_online = qeth_l3_set_online,
|
|
.set_offline = qeth_l3_set_offline,
|
|
.control_event_handler = qeth_l3_control_event,
|
|
};
|
|
EXPORT_SYMBOL_GPL(qeth_l3_discipline);
|
|
|
|
static int qeth_l3_handle_ip_event(struct qeth_card *card,
|
|
struct qeth_ipaddr *addr,
|
|
unsigned long event)
|
|
{
|
|
switch (event) {
|
|
case NETDEV_UP:
|
|
qeth_l3_modify_ip(card, addr, true);
|
|
return NOTIFY_OK;
|
|
case NETDEV_DOWN:
|
|
qeth_l3_modify_ip(card, addr, false);
|
|
return NOTIFY_OK;
|
|
default:
|
|
return NOTIFY_DONE;
|
|
}
|
|
}
|
|
|
|
struct qeth_l3_ip_event_work {
|
|
struct work_struct work;
|
|
struct qeth_card *card;
|
|
struct qeth_ipaddr addr;
|
|
};
|
|
|
|
#define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work)
|
|
|
|
static void qeth_l3_add_ip_worker(struct work_struct *work)
|
|
{
|
|
struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
|
|
|
|
qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true);
|
|
kfree(work);
|
|
}
|
|
|
|
static void qeth_l3_delete_ip_worker(struct work_struct *work)
|
|
{
|
|
struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
|
|
|
|
qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false);
|
|
kfree(work);
|
|
}
|
|
|
|
static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
|
|
{
|
|
if (is_vlan_dev(dev))
|
|
dev = vlan_dev_real_dev(dev);
|
|
if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
|
|
dev->netdev_ops == &qeth_l3_netdev_ops)
|
|
return (struct qeth_card *) dev->ml_priv;
|
|
return NULL;
|
|
}
|
|
|
|
static int qeth_l3_ip_event(struct notifier_block *this,
|
|
unsigned long event, void *ptr)
|
|
{
|
|
struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
|
|
struct net_device *dev = ifa->ifa_dev->dev;
|
|
struct qeth_ipaddr addr;
|
|
struct qeth_card *card;
|
|
|
|
card = qeth_l3_get_card_from_dev(dev);
|
|
if (!card)
|
|
return NOTIFY_DONE;
|
|
QETH_CARD_TEXT(card, 3, "ipevent");
|
|
|
|
qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
|
|
addr.u.a4.addr = ifa->ifa_address;
|
|
addr.u.a4.mask = ifa->ifa_mask;
|
|
|
|
return qeth_l3_handle_ip_event(card, &addr, event);
|
|
}
|
|
|
|
static struct notifier_block qeth_l3_ip_notifier = {
|
|
qeth_l3_ip_event,
|
|
NULL,
|
|
};
|
|
|
|
static int qeth_l3_ip6_event(struct notifier_block *this,
|
|
unsigned long event, void *ptr)
|
|
{
|
|
struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
|
|
struct net_device *dev = ifa->idev->dev;
|
|
struct qeth_l3_ip_event_work *ip_work;
|
|
struct qeth_card *card;
|
|
|
|
if (event != NETDEV_UP && event != NETDEV_DOWN)
|
|
return NOTIFY_DONE;
|
|
|
|
card = qeth_l3_get_card_from_dev(dev);
|
|
if (!card)
|
|
return NOTIFY_DONE;
|
|
QETH_CARD_TEXT(card, 3, "ip6event");
|
|
if (!qeth_is_supported(card, IPA_IPV6))
|
|
return NOTIFY_DONE;
|
|
|
|
ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC);
|
|
if (!ip_work)
|
|
return NOTIFY_DONE;
|
|
|
|
if (event == NETDEV_UP)
|
|
INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker);
|
|
else
|
|
INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker);
|
|
|
|
ip_work->card = card;
|
|
qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL,
|
|
QETH_PROT_IPV6);
|
|
ip_work->addr.u.a6.addr = ifa->addr;
|
|
ip_work->addr.u.a6.pfxlen = ifa->prefix_len;
|
|
|
|
queue_work(card->cmd_wq, &ip_work->work);
|
|
return NOTIFY_OK;
|
|
}
|
|
|
|
static struct notifier_block qeth_l3_ip6_notifier = {
|
|
qeth_l3_ip6_event,
|
|
NULL,
|
|
};
|
|
|
|
static int qeth_l3_register_notifiers(void)
|
|
{
|
|
int rc;
|
|
|
|
QETH_DBF_TEXT(SETUP, 5, "regnotif");
|
|
rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
|
|
if (rc)
|
|
return rc;
|
|
rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
|
|
if (rc) {
|
|
unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
|
|
return rc;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void qeth_l3_unregister_notifiers(void)
|
|
{
|
|
QETH_DBF_TEXT(SETUP, 5, "unregnot");
|
|
WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
|
|
WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
|
|
}
|
|
|
|
static int __init qeth_l3_init(void)
|
|
{
|
|
pr_info("register layer 3 discipline\n");
|
|
return qeth_l3_register_notifiers();
|
|
}
|
|
|
|
static void __exit qeth_l3_exit(void)
|
|
{
|
|
qeth_l3_unregister_notifiers();
|
|
pr_info("unregister layer 3 discipline\n");
|
|
}
|
|
|
|
module_init(qeth_l3_init);
|
|
module_exit(qeth_l3_exit);
|
|
MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
|
|
MODULE_DESCRIPTION("qeth layer 3 discipline");
|
|
MODULE_LICENSE("GPL");
|