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![Saurav Kashyap](/assets/img/avatar_default.png)
If FCoE is not configured, libfc/libfcoe keeps on retrying FLOGI and after 3 retries driver does a context reset and tries fipvlan again. This leads to context reset message flooding the logs. Hence ratelimit the message to prevent flooding the logs. Link: https://lore.kernel.org/r/20220117135311.6256-4-njavali@marvell.com Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Nilesh Javali <njavali@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
4164 lines
111 KiB
C
4164 lines
111 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* QLogic FCoE Offload Driver
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* Copyright (c) 2016-2018 Cavium Inc.
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/device.h>
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#include <linux/highmem.h>
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#include <linux/crc32.h>
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#include <linux/interrupt.h>
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#include <linux/list.h>
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#include <linux/kthread.h>
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#include <linux/phylink.h>
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#include <scsi/libfc.h>
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#include <scsi/scsi_host.h>
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#include <scsi/fc_frame.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/cpu.h>
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#include "qedf.h"
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#include "qedf_dbg.h"
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#include <uapi/linux/pci_regs.h>
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const struct qed_fcoe_ops *qed_ops;
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static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
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static void qedf_remove(struct pci_dev *pdev);
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static void qedf_shutdown(struct pci_dev *pdev);
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static void qedf_schedule_recovery_handler(void *dev);
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static void qedf_recovery_handler(struct work_struct *work);
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/*
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* Driver module parameters.
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*/
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static unsigned int qedf_dev_loss_tmo = 60;
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module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
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MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached "
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"remote ports (default 60)");
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uint qedf_debug = QEDF_LOG_INFO;
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module_param_named(debug, qedf_debug, uint, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
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" mask");
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static uint qedf_fipvlan_retries = 60;
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module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
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MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
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"before giving up (default 60)");
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static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
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module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
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MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
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"(default 1002).");
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static int qedf_default_prio = -1;
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module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
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MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE"
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" traffic (value between 0 and 7, default 3).");
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uint qedf_dump_frames;
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module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
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"(default off)");
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static uint qedf_queue_depth;
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module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
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MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
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"by the qedf driver. Default is 0 (use OS default).");
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uint qedf_io_tracing;
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module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
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"into trace buffer. (default off).");
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static uint qedf_max_lun = MAX_FIBRE_LUNS;
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module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
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MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
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"supports. (default 0xffffffff)");
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uint qedf_link_down_tmo;
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module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
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MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
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"link is down by N seconds.");
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bool qedf_retry_delay;
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module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
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"delay handling (default off).");
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static bool qedf_dcbx_no_wait;
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module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start "
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"sending FIP VLAN requests on link up (Default: off).");
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static uint qedf_dp_module;
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module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
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MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
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"qed module during probe.");
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static uint qedf_dp_level = QED_LEVEL_NOTICE;
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module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
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MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module "
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"during probe (0-3: 0 more verbose).");
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static bool qedf_enable_recovery = true;
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module_param_named(enable_recovery, qedf_enable_recovery,
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bool, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(enable_recovery, "Enable/disable recovery on driver/firmware "
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"interface level errors 0 = Disabled, 1 = Enabled (Default: 1).");
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struct workqueue_struct *qedf_io_wq;
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static struct fcoe_percpu_s qedf_global;
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static DEFINE_SPINLOCK(qedf_global_lock);
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static struct kmem_cache *qedf_io_work_cache;
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void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
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{
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int vlan_id_tmp = 0;
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vlan_id_tmp = vlan_id | (qedf->prio << VLAN_PRIO_SHIFT);
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qedf->vlan_id = vlan_id_tmp;
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QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
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"Setting vlan_id=0x%04x prio=%d.\n",
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vlan_id_tmp, qedf->prio);
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}
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/* Returns true if we have a valid vlan, false otherwise */
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static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
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{
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while (qedf->fipvlan_retries--) {
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/* This is to catch if link goes down during fipvlan retries */
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if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
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QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n");
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return false;
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}
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if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
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QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n");
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return false;
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}
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if (qedf->vlan_id > 0) {
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QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
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"vlan = 0x%x already set, calling ctlr_link_up.\n",
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qedf->vlan_id);
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if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
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fcoe_ctlr_link_up(&qedf->ctlr);
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return true;
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}
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QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
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"Retry %d.\n", qedf->fipvlan_retries);
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init_completion(&qedf->fipvlan_compl);
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qedf_fcoe_send_vlan_req(qedf);
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wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ);
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}
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return false;
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}
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static void qedf_handle_link_update(struct work_struct *work)
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{
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struct qedf_ctx *qedf =
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container_of(work, struct qedf_ctx, link_update.work);
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int rc;
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QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n",
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atomic_read(&qedf->link_state));
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if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
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rc = qedf_initiate_fipvlan_req(qedf);
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if (rc)
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return;
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if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
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QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
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"Link is down, resetting vlan_id.\n");
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qedf->vlan_id = 0;
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return;
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}
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/*
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* If we get here then we never received a repsonse to our
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* fip vlan request so set the vlan_id to the default and
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* tell FCoE that the link is up
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*/
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QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
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"response, falling back to default VLAN %d.\n",
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qedf_fallback_vlan);
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qedf_set_vlan_id(qedf, qedf_fallback_vlan);
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/*
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* Zero out data_src_addr so we'll update it with the new
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* lport port_id
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*/
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eth_zero_addr(qedf->data_src_addr);
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fcoe_ctlr_link_up(&qedf->ctlr);
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} else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
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/*
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* If we hit here and link_down_tmo_valid is still 1 it means
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* that link_down_tmo timed out so set it to 0 to make sure any
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* other readers have accurate state.
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*/
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atomic_set(&qedf->link_down_tmo_valid, 0);
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QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
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"Calling fcoe_ctlr_link_down().\n");
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fcoe_ctlr_link_down(&qedf->ctlr);
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if (qedf_wait_for_upload(qedf) == false)
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QEDF_ERR(&qedf->dbg_ctx,
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"Could not upload all sessions.\n");
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/* Reset the number of FIP VLAN retries */
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qedf->fipvlan_retries = qedf_fipvlan_retries;
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}
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}
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#define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1
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#define QEDF_FCOE_MAC_METHOD_FCF_MAP 2
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#define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3
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static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
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{
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u8 *granted_mac;
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struct fc_frame_header *fh = fc_frame_header_get(fp);
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u8 fc_map[3];
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int method = 0;
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/* Get granted MAC address from FIP FLOGI payload */
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granted_mac = fr_cb(fp)->granted_mac;
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/*
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* We set the source MAC for FCoE traffic based on the Granted MAC
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* address from the switch.
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*
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* If granted_mac is non-zero, we used that.
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* If the granted_mac is zeroed out, created the FCoE MAC based on
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* the sel_fcf->fc_map and the d_id fo the FLOGI frame.
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* If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
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* d_id of the FLOGI frame.
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*/
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if (!is_zero_ether_addr(granted_mac)) {
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ether_addr_copy(qedf->data_src_addr, granted_mac);
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method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
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} else if (qedf->ctlr.sel_fcf->fc_map != 0) {
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hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
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qedf->data_src_addr[0] = fc_map[0];
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qedf->data_src_addr[1] = fc_map[1];
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qedf->data_src_addr[2] = fc_map[2];
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qedf->data_src_addr[3] = fh->fh_d_id[0];
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qedf->data_src_addr[4] = fh->fh_d_id[1];
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qedf->data_src_addr[5] = fh->fh_d_id[2];
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method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
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} else {
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fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
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method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
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}
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QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
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"QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
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}
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static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
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void *arg)
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{
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struct fc_exch *exch = fc_seq_exch(seq);
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struct fc_lport *lport = exch->lp;
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struct qedf_ctx *qedf = lport_priv(lport);
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if (!qedf) {
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QEDF_ERR(NULL, "qedf is NULL.\n");
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return;
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}
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/*
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* If ERR_PTR is set then don't try to stat anything as it will cause
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* a crash when we access fp.
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*/
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if (IS_ERR(fp)) {
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QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
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"fp has IS_ERR() set.\n");
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goto skip_stat;
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}
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/* Log stats for FLOGI reject */
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if (fc_frame_payload_op(fp) == ELS_LS_RJT)
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qedf->flogi_failed++;
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else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
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/* Set the source MAC we will use for FCoE traffic */
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qedf_set_data_src_addr(qedf, fp);
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qedf->flogi_pending = 0;
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}
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/* Complete flogi_compl so we can proceed to sending ADISCs */
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complete(&qedf->flogi_compl);
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skip_stat:
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/* Report response to libfc */
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fc_lport_flogi_resp(seq, fp, lport);
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}
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static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
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struct fc_frame *fp, unsigned int op,
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void (*resp)(struct fc_seq *,
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struct fc_frame *,
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void *),
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void *arg, u32 timeout)
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{
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struct qedf_ctx *qedf = lport_priv(lport);
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/*
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* Intercept FLOGI for statistic purposes. Note we use the resp
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* callback to tell if this is really a flogi.
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*/
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if (resp == fc_lport_flogi_resp) {
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qedf->flogi_cnt++;
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if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) {
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schedule_delayed_work(&qedf->stag_work, 2);
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return NULL;
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}
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qedf->flogi_pending++;
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return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
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arg, timeout);
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}
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return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
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}
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int qedf_send_flogi(struct qedf_ctx *qedf)
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{
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struct fc_lport *lport;
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struct fc_frame *fp;
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lport = qedf->lport;
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if (!lport->tt.elsct_send) {
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QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n");
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return -EINVAL;
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}
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fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
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if (!fp) {
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QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
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return -ENOMEM;
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}
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QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
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"Sending FLOGI to reestablish session with switch.\n");
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lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
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ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
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init_completion(&qedf->flogi_compl);
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return 0;
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}
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/*
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* This function is called if link_down_tmo is in use. If we get a link up and
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* link_down_tmo has not expired then use just FLOGI/ADISC to recover our
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* sessions with targets. Otherwise, just call fcoe_ctlr_link_up().
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*/
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static void qedf_link_recovery(struct work_struct *work)
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{
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struct qedf_ctx *qedf =
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container_of(work, struct qedf_ctx, link_recovery.work);
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struct fc_lport *lport = qedf->lport;
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struct fc_rport_priv *rdata;
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bool rc;
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int retries = 30;
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int rval, i;
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struct list_head rdata_login_list;
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INIT_LIST_HEAD(&rdata_login_list);
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QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
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"Link down tmo did not expire.\n");
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/*
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* Essentially reset the fcoe_ctlr here without affecting the state
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* of the libfc structs.
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*/
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qedf->ctlr.state = FIP_ST_LINK_WAIT;
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fcoe_ctlr_link_down(&qedf->ctlr);
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/*
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* Bring the link up before we send the fipvlan request so libfcoe
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* can select a new fcf in parallel
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*/
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fcoe_ctlr_link_up(&qedf->ctlr);
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/* Since the link when down and up to verify which vlan we're on */
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qedf->fipvlan_retries = qedf_fipvlan_retries;
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rc = qedf_initiate_fipvlan_req(qedf);
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/* If getting the VLAN fails, set the VLAN to the fallback one */
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if (!rc)
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qedf_set_vlan_id(qedf, qedf_fallback_vlan);
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/*
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* We need to wait for an FCF to be selected due to the
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* fcoe_ctlr_link_up other the FLOGI will be rejected.
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*/
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while (retries > 0) {
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if (qedf->ctlr.sel_fcf) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"FCF reselected, proceeding with FLOGI.\n");
|
|
break;
|
|
}
|
|
msleep(500);
|
|
retries--;
|
|
}
|
|
|
|
if (retries < 1) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
|
|
"FCF selection.\n");
|
|
return;
|
|
}
|
|
|
|
rval = qedf_send_flogi(qedf);
|
|
if (rval)
|
|
return;
|
|
|
|
/* Wait for FLOGI completion before proceeding with sending ADISCs */
|
|
i = wait_for_completion_timeout(&qedf->flogi_compl,
|
|
qedf->lport->r_a_tov);
|
|
if (i == 0) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Call lport->tt.rport_login which will cause libfc to send an
|
|
* ADISC since the rport is in state ready.
|
|
*/
|
|
mutex_lock(&lport->disc.disc_mutex);
|
|
list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
|
|
if (kref_get_unless_zero(&rdata->kref)) {
|
|
fc_rport_login(rdata);
|
|
kref_put(&rdata->kref, fc_rport_destroy);
|
|
}
|
|
}
|
|
mutex_unlock(&lport->disc.disc_mutex);
|
|
}
|
|
|
|
static void qedf_update_link_speed(struct qedf_ctx *qedf,
|
|
struct qed_link_output *link)
|
|
{
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps);
|
|
struct fc_lport *lport = qedf->lport;
|
|
|
|
lport->link_speed = FC_PORTSPEED_UNKNOWN;
|
|
lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
|
|
|
|
/* Set fc_host link speed */
|
|
switch (link->speed) {
|
|
case 10000:
|
|
lport->link_speed = FC_PORTSPEED_10GBIT;
|
|
break;
|
|
case 25000:
|
|
lport->link_speed = FC_PORTSPEED_25GBIT;
|
|
break;
|
|
case 40000:
|
|
lport->link_speed = FC_PORTSPEED_40GBIT;
|
|
break;
|
|
case 50000:
|
|
lport->link_speed = FC_PORTSPEED_50GBIT;
|
|
break;
|
|
case 100000:
|
|
lport->link_speed = FC_PORTSPEED_100GBIT;
|
|
break;
|
|
case 20000:
|
|
lport->link_speed = FC_PORTSPEED_20GBIT;
|
|
break;
|
|
default:
|
|
lport->link_speed = FC_PORTSPEED_UNKNOWN;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Set supported link speed by querying the supported
|
|
* capabilities of the link.
|
|
*/
|
|
|
|
phylink_zero(sup_caps);
|
|
phylink_set(sup_caps, 10000baseT_Full);
|
|
phylink_set(sup_caps, 10000baseKX4_Full);
|
|
phylink_set(sup_caps, 10000baseR_FEC);
|
|
phylink_set(sup_caps, 10000baseCR_Full);
|
|
phylink_set(sup_caps, 10000baseSR_Full);
|
|
phylink_set(sup_caps, 10000baseLR_Full);
|
|
phylink_set(sup_caps, 10000baseLRM_Full);
|
|
phylink_set(sup_caps, 10000baseKR_Full);
|
|
|
|
if (linkmode_intersects(link->supported_caps, sup_caps))
|
|
lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
|
|
|
|
phylink_zero(sup_caps);
|
|
phylink_set(sup_caps, 25000baseKR_Full);
|
|
phylink_set(sup_caps, 25000baseCR_Full);
|
|
phylink_set(sup_caps, 25000baseSR_Full);
|
|
|
|
if (linkmode_intersects(link->supported_caps, sup_caps))
|
|
lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
|
|
|
|
phylink_zero(sup_caps);
|
|
phylink_set(sup_caps, 40000baseLR4_Full);
|
|
phylink_set(sup_caps, 40000baseKR4_Full);
|
|
phylink_set(sup_caps, 40000baseCR4_Full);
|
|
phylink_set(sup_caps, 40000baseSR4_Full);
|
|
|
|
if (linkmode_intersects(link->supported_caps, sup_caps))
|
|
lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
|
|
|
|
phylink_zero(sup_caps);
|
|
phylink_set(sup_caps, 50000baseKR2_Full);
|
|
phylink_set(sup_caps, 50000baseCR2_Full);
|
|
phylink_set(sup_caps, 50000baseSR2_Full);
|
|
|
|
if (linkmode_intersects(link->supported_caps, sup_caps))
|
|
lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
|
|
|
|
phylink_zero(sup_caps);
|
|
phylink_set(sup_caps, 100000baseKR4_Full);
|
|
phylink_set(sup_caps, 100000baseSR4_Full);
|
|
phylink_set(sup_caps, 100000baseCR4_Full);
|
|
phylink_set(sup_caps, 100000baseLR4_ER4_Full);
|
|
|
|
if (linkmode_intersects(link->supported_caps, sup_caps))
|
|
lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
|
|
|
|
phylink_zero(sup_caps);
|
|
phylink_set(sup_caps, 20000baseKR2_Full);
|
|
|
|
if (linkmode_intersects(link->supported_caps, sup_caps))
|
|
lport->link_supported_speeds |= FC_PORTSPEED_20GBIT;
|
|
|
|
if (lport->host && lport->host->shost_data)
|
|
fc_host_supported_speeds(lport->host) =
|
|
lport->link_supported_speeds;
|
|
}
|
|
|
|
static void qedf_bw_update(void *dev)
|
|
{
|
|
struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
|
|
struct qed_link_output link;
|
|
|
|
/* Get the latest status of the link */
|
|
qed_ops->common->get_link(qedf->cdev, &link);
|
|
|
|
if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"Ignore link update, driver getting unload.\n");
|
|
return;
|
|
}
|
|
|
|
if (link.link_up) {
|
|
if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
|
|
qedf_update_link_speed(qedf, &link);
|
|
else
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"Ignore bw update, link is down.\n");
|
|
|
|
} else {
|
|
QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n");
|
|
}
|
|
}
|
|
|
|
static void qedf_link_update(void *dev, struct qed_link_output *link)
|
|
{
|
|
struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
|
|
|
|
/*
|
|
* Prevent race where we're removing the module and we get link update
|
|
* for qed.
|
|
*/
|
|
if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"Ignore link update, driver getting unload.\n");
|
|
return;
|
|
}
|
|
|
|
if (link->link_up) {
|
|
if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
|
|
QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"Ignoring link up event as link is already up.\n");
|
|
return;
|
|
}
|
|
QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
|
|
link->speed / 1000);
|
|
|
|
/* Cancel any pending link down work */
|
|
cancel_delayed_work(&qedf->link_update);
|
|
|
|
atomic_set(&qedf->link_state, QEDF_LINK_UP);
|
|
qedf_update_link_speed(qedf, link);
|
|
|
|
if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE ||
|
|
qedf_dcbx_no_wait) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"DCBx done.\n");
|
|
if (atomic_read(&qedf->link_down_tmo_valid) > 0)
|
|
queue_delayed_work(qedf->link_update_wq,
|
|
&qedf->link_recovery, 0);
|
|
else
|
|
queue_delayed_work(qedf->link_update_wq,
|
|
&qedf->link_update, 0);
|
|
atomic_set(&qedf->link_down_tmo_valid, 0);
|
|
}
|
|
|
|
} else {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
|
|
|
|
atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
|
|
atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
|
|
/*
|
|
* Flag that we're waiting for the link to come back up before
|
|
* informing the fcoe layer of the event.
|
|
*/
|
|
if (qedf_link_down_tmo > 0) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"Starting link down tmo.\n");
|
|
atomic_set(&qedf->link_down_tmo_valid, 1);
|
|
}
|
|
qedf->vlan_id = 0;
|
|
qedf_update_link_speed(qedf, link);
|
|
queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
|
|
qedf_link_down_tmo * HZ);
|
|
}
|
|
}
|
|
|
|
|
|
static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
|
|
{
|
|
struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
|
|
u8 tmp_prio;
|
|
|
|
QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
|
|
"prio=%d.\n", get->operational.valid, get->operational.enabled,
|
|
get->operational.app_prio.fcoe);
|
|
|
|
if (get->operational.enabled && get->operational.valid) {
|
|
/* If DCBX was already negotiated on link up then just exit */
|
|
if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"DCBX already set on link up.\n");
|
|
return;
|
|
}
|
|
|
|
atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
|
|
|
|
/*
|
|
* Set the 8021q priority in the following manner:
|
|
*
|
|
* 1. If a modparam is set use that
|
|
* 2. If the value is not between 0..7 use the default
|
|
* 3. Use the priority we get from the DCBX app tag
|
|
*/
|
|
tmp_prio = get->operational.app_prio.fcoe;
|
|
if (qedf_default_prio > -1)
|
|
qedf->prio = qedf_default_prio;
|
|
else if (tmp_prio > 7) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"FIP/FCoE prio %d out of range, setting to %d.\n",
|
|
tmp_prio, QEDF_DEFAULT_PRIO);
|
|
qedf->prio = QEDF_DEFAULT_PRIO;
|
|
} else
|
|
qedf->prio = tmp_prio;
|
|
|
|
if (atomic_read(&qedf->link_state) == QEDF_LINK_UP &&
|
|
!qedf_dcbx_no_wait) {
|
|
if (atomic_read(&qedf->link_down_tmo_valid) > 0)
|
|
queue_delayed_work(qedf->link_update_wq,
|
|
&qedf->link_recovery, 0);
|
|
else
|
|
queue_delayed_work(qedf->link_update_wq,
|
|
&qedf->link_update, 0);
|
|
atomic_set(&qedf->link_down_tmo_valid, 0);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
static u32 qedf_get_login_failures(void *cookie)
|
|
{
|
|
struct qedf_ctx *qedf;
|
|
|
|
qedf = (struct qedf_ctx *)cookie;
|
|
return qedf->flogi_failed;
|
|
}
|
|
|
|
static struct qed_fcoe_cb_ops qedf_cb_ops = {
|
|
{
|
|
.link_update = qedf_link_update,
|
|
.bw_update = qedf_bw_update,
|
|
.schedule_recovery_handler = qedf_schedule_recovery_handler,
|
|
.dcbx_aen = qedf_dcbx_handler,
|
|
.get_generic_tlv_data = qedf_get_generic_tlv_data,
|
|
.get_protocol_tlv_data = qedf_get_protocol_tlv_data,
|
|
.schedule_hw_err_handler = qedf_schedule_hw_err_handler,
|
|
}
|
|
};
|
|
|
|
/*
|
|
* Various transport templates.
|
|
*/
|
|
|
|
static struct scsi_transport_template *qedf_fc_transport_template;
|
|
static struct scsi_transport_template *qedf_fc_vport_transport_template;
|
|
|
|
/*
|
|
* SCSI EH handlers
|
|
*/
|
|
static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
|
|
{
|
|
struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
|
|
struct fc_lport *lport;
|
|
struct qedf_ctx *qedf;
|
|
struct qedf_ioreq *io_req;
|
|
struct fc_rport_libfc_priv *rp = rport->dd_data;
|
|
struct fc_rport_priv *rdata;
|
|
struct qedf_rport *fcport = NULL;
|
|
int rc = FAILED;
|
|
int wait_count = 100;
|
|
int refcount = 0;
|
|
int rval;
|
|
int got_ref = 0;
|
|
|
|
lport = shost_priv(sc_cmd->device->host);
|
|
qedf = (struct qedf_ctx *)lport_priv(lport);
|
|
|
|
/* rport and tgt are allocated together, so tgt should be non-NULL */
|
|
fcport = (struct qedf_rport *)&rp[1];
|
|
rdata = fcport->rdata;
|
|
if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
|
|
QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd);
|
|
rc = SUCCESS;
|
|
goto out;
|
|
}
|
|
|
|
|
|
io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
|
|
if (!io_req) {
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n",
|
|
sc_cmd, sc_cmd->cmnd[0],
|
|
rdata->ids.port_id);
|
|
rc = SUCCESS;
|
|
goto drop_rdata_kref;
|
|
}
|
|
|
|
rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */
|
|
if (rval)
|
|
got_ref = 1;
|
|
|
|
/* If we got a valid io_req, confirm it belongs to this sc_cmd. */
|
|
if (!rval || io_req->sc_cmd != sc_cmd) {
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n",
|
|
io_req->sc_cmd, sc_cmd, rdata->ids.port_id);
|
|
|
|
goto drop_rdata_kref;
|
|
}
|
|
|
|
if (fc_remote_port_chkready(rport)) {
|
|
refcount = kref_read(&io_req->refcount);
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n",
|
|
io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0],
|
|
refcount, rdata->ids.port_id);
|
|
|
|
goto drop_rdata_kref;
|
|
}
|
|
|
|
rc = fc_block_scsi_eh(sc_cmd);
|
|
if (rc)
|
|
goto drop_rdata_kref;
|
|
|
|
if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"Connection uploading, xid=0x%x., port_id=%06x\n",
|
|
io_req->xid, rdata->ids.port_id);
|
|
while (io_req->sc_cmd && (wait_count != 0)) {
|
|
msleep(100);
|
|
wait_count--;
|
|
}
|
|
if (wait_count) {
|
|
QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n");
|
|
rc = SUCCESS;
|
|
} else {
|
|
QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n");
|
|
rc = FAILED;
|
|
}
|
|
goto drop_rdata_kref;
|
|
}
|
|
|
|
if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
|
|
QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n");
|
|
goto drop_rdata_kref;
|
|
}
|
|
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n",
|
|
io_req, sc_cmd, io_req->xid, io_req->fp_idx,
|
|
rdata->ids.port_id);
|
|
|
|
if (qedf->stop_io_on_error) {
|
|
qedf_stop_all_io(qedf);
|
|
rc = SUCCESS;
|
|
goto drop_rdata_kref;
|
|
}
|
|
|
|
init_completion(&io_req->abts_done);
|
|
rval = qedf_initiate_abts(io_req, true);
|
|
if (rval) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
|
|
/*
|
|
* If we fail to queue the ABTS then return this command to
|
|
* the SCSI layer as it will own and free the xid
|
|
*/
|
|
rc = SUCCESS;
|
|
qedf_scsi_done(qedf, io_req, DID_ERROR);
|
|
goto drop_rdata_kref;
|
|
}
|
|
|
|
wait_for_completion(&io_req->abts_done);
|
|
|
|
if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
|
|
io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
|
|
io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
|
|
/*
|
|
* If we get a reponse to the abort this is success from
|
|
* the perspective that all references to the command have
|
|
* been removed from the driver and firmware
|
|
*/
|
|
rc = SUCCESS;
|
|
} else {
|
|
/* If the abort and cleanup failed then return a failure */
|
|
rc = FAILED;
|
|
}
|
|
|
|
if (rc == SUCCESS)
|
|
QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
|
|
io_req->xid);
|
|
else
|
|
QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
|
|
io_req->xid);
|
|
|
|
drop_rdata_kref:
|
|
kref_put(&rdata->kref, fc_rport_destroy);
|
|
out:
|
|
if (got_ref)
|
|
kref_put(&io_req->refcount, qedf_release_cmd);
|
|
return rc;
|
|
}
|
|
|
|
static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
|
|
{
|
|
QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...",
|
|
sc_cmd->device->host->host_no, sc_cmd->device->id,
|
|
sc_cmd->device->lun);
|
|
return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
|
|
}
|
|
|
|
static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
|
|
{
|
|
QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ",
|
|
sc_cmd->device->host->host_no, sc_cmd->device->id,
|
|
sc_cmd->device->lun);
|
|
return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
|
|
}
|
|
|
|
bool qedf_wait_for_upload(struct qedf_ctx *qedf)
|
|
{
|
|
struct qedf_rport *fcport = NULL;
|
|
int wait_cnt = 120;
|
|
|
|
while (wait_cnt--) {
|
|
if (atomic_read(&qedf->num_offloads))
|
|
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
|
|
"Waiting for all uploads to complete num_offloads = 0x%x.\n",
|
|
atomic_read(&qedf->num_offloads));
|
|
else
|
|
return true;
|
|
msleep(500);
|
|
}
|
|
|
|
rcu_read_lock();
|
|
list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
|
|
if (fcport && test_bit(QEDF_RPORT_SESSION_READY,
|
|
&fcport->flags)) {
|
|
if (fcport->rdata)
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"Waiting for fcport %p portid=%06x.\n",
|
|
fcport, fcport->rdata->ids.port_id);
|
|
} else {
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"Waiting for fcport %p.\n", fcport);
|
|
}
|
|
}
|
|
rcu_read_unlock();
|
|
return false;
|
|
|
|
}
|
|
|
|
/* Performs soft reset of qedf_ctx by simulating a link down/up */
|
|
void qedf_ctx_soft_reset(struct fc_lport *lport)
|
|
{
|
|
struct qedf_ctx *qedf;
|
|
struct qed_link_output if_link;
|
|
|
|
if (lport->vport) {
|
|
printk_ratelimited("Cannot issue host reset on NPIV port.\n");
|
|
return;
|
|
}
|
|
|
|
qedf = lport_priv(lport);
|
|
|
|
qedf->flogi_pending = 0;
|
|
/* For host reset, essentially do a soft link up/down */
|
|
atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
|
|
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
|
|
"Queuing link down work.\n");
|
|
queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
|
|
0);
|
|
|
|
if (qedf_wait_for_upload(qedf) == false) {
|
|
QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
|
|
WARN_ON(atomic_read(&qedf->num_offloads));
|
|
}
|
|
|
|
/* Before setting link up query physical link state */
|
|
qed_ops->common->get_link(qedf->cdev, &if_link);
|
|
/* Bail if the physical link is not up */
|
|
if (!if_link.link_up) {
|
|
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
|
|
"Physical link is not up.\n");
|
|
return;
|
|
}
|
|
/* Flush and wait to make sure link down is processed */
|
|
flush_delayed_work(&qedf->link_update);
|
|
msleep(500);
|
|
|
|
atomic_set(&qedf->link_state, QEDF_LINK_UP);
|
|
qedf->vlan_id = 0;
|
|
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
|
|
"Queue link up work.\n");
|
|
queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
|
|
0);
|
|
}
|
|
|
|
/* Reset the host by gracefully logging out and then logging back in */
|
|
static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
|
|
{
|
|
struct fc_lport *lport;
|
|
struct qedf_ctx *qedf;
|
|
|
|
lport = shost_priv(sc_cmd->device->host);
|
|
qedf = lport_priv(lport);
|
|
|
|
if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
|
|
test_bit(QEDF_UNLOADING, &qedf->flags))
|
|
return FAILED;
|
|
|
|
QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
|
|
|
|
qedf_ctx_soft_reset(lport);
|
|
|
|
return SUCCESS;
|
|
}
|
|
|
|
static int qedf_slave_configure(struct scsi_device *sdev)
|
|
{
|
|
if (qedf_queue_depth) {
|
|
scsi_change_queue_depth(sdev, qedf_queue_depth);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct scsi_host_template qedf_host_template = {
|
|
.module = THIS_MODULE,
|
|
.name = QEDF_MODULE_NAME,
|
|
.this_id = -1,
|
|
.cmd_per_lun = 32,
|
|
.max_sectors = 0xffff,
|
|
.queuecommand = qedf_queuecommand,
|
|
.shost_groups = qedf_host_groups,
|
|
.eh_abort_handler = qedf_eh_abort,
|
|
.eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
|
|
.eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
|
|
.eh_host_reset_handler = qedf_eh_host_reset,
|
|
.slave_configure = qedf_slave_configure,
|
|
.dma_boundary = QED_HW_DMA_BOUNDARY,
|
|
.sg_tablesize = QEDF_MAX_BDS_PER_CMD,
|
|
.can_queue = FCOE_PARAMS_NUM_TASKS,
|
|
.change_queue_depth = scsi_change_queue_depth,
|
|
};
|
|
|
|
static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
|
|
{
|
|
int rc;
|
|
|
|
spin_lock(&qedf_global_lock);
|
|
rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
|
|
spin_unlock(&qedf_global_lock);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
|
|
{
|
|
struct qedf_rport *fcport;
|
|
struct fc_rport_priv *rdata;
|
|
|
|
rcu_read_lock();
|
|
list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
|
|
rdata = fcport->rdata;
|
|
if (rdata == NULL)
|
|
continue;
|
|
if (rdata->ids.port_id == port_id) {
|
|
rcu_read_unlock();
|
|
return fcport;
|
|
}
|
|
}
|
|
rcu_read_unlock();
|
|
|
|
/* Return NULL to caller to let them know fcport was not found */
|
|
return NULL;
|
|
}
|
|
|
|
/* Transmits an ELS frame over an offloaded session */
|
|
static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
|
|
{
|
|
struct fc_frame_header *fh;
|
|
int rc = 0;
|
|
|
|
fh = fc_frame_header_get(fp);
|
|
if ((fh->fh_type == FC_TYPE_ELS) &&
|
|
(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
|
|
switch (fc_frame_payload_op(fp)) {
|
|
case ELS_ADISC:
|
|
qedf_send_adisc(fcport, fp);
|
|
rc = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* qedf_xmit - qedf FCoE frame transmit function
|
|
*/
|
|
static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
|
|
{
|
|
struct fc_lport *base_lport;
|
|
struct qedf_ctx *qedf;
|
|
struct ethhdr *eh;
|
|
struct fcoe_crc_eof *cp;
|
|
struct sk_buff *skb;
|
|
struct fc_frame_header *fh;
|
|
struct fcoe_hdr *hp;
|
|
u8 sof, eof;
|
|
u32 crc;
|
|
unsigned int hlen, tlen, elen;
|
|
int wlen;
|
|
struct fc_stats *stats;
|
|
struct fc_lport *tmp_lport;
|
|
struct fc_lport *vn_port = NULL;
|
|
struct qedf_rport *fcport;
|
|
int rc;
|
|
u16 vlan_tci = 0;
|
|
|
|
qedf = (struct qedf_ctx *)lport_priv(lport);
|
|
|
|
fh = fc_frame_header_get(fp);
|
|
skb = fp_skb(fp);
|
|
|
|
/* Filter out traffic to other NPIV ports on the same host */
|
|
if (lport->vport)
|
|
base_lport = shost_priv(vport_to_shost(lport->vport));
|
|
else
|
|
base_lport = lport;
|
|
|
|
/* Flag if the destination is the base port */
|
|
if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
|
|
vn_port = base_lport;
|
|
} else {
|
|
/* Got through the list of vports attached to the base_lport
|
|
* and see if we have a match with the destination address.
|
|
*/
|
|
list_for_each_entry(tmp_lport, &base_lport->vports, list) {
|
|
if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
|
|
vn_port = tmp_lport;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
|
|
struct fc_rport_priv *rdata = NULL;
|
|
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
|
|
"Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
|
|
kfree_skb(skb);
|
|
rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
|
|
if (rdata) {
|
|
rdata->retries = lport->max_rport_retry_count;
|
|
kref_put(&rdata->kref, fc_rport_destroy);
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
/* End NPIV filtering */
|
|
|
|
if (!qedf->ctlr.sel_fcf) {
|
|
kfree_skb(skb);
|
|
return 0;
|
|
}
|
|
|
|
if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
|
|
QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
|
|
kfree_skb(skb);
|
|
return 0;
|
|
}
|
|
|
|
if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
|
|
QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
|
|
kfree_skb(skb);
|
|
return 0;
|
|
}
|
|
|
|
if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
|
|
if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
|
|
return 0;
|
|
}
|
|
|
|
/* Check to see if this needs to be sent on an offloaded session */
|
|
fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
|
|
|
|
if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
|
|
rc = qedf_xmit_l2_frame(fcport, fp);
|
|
/*
|
|
* If the frame was successfully sent over the middle path
|
|
* then do not try to also send it over the LL2 path
|
|
*/
|
|
if (rc)
|
|
return 0;
|
|
}
|
|
|
|
sof = fr_sof(fp);
|
|
eof = fr_eof(fp);
|
|
|
|
elen = sizeof(struct ethhdr);
|
|
hlen = sizeof(struct fcoe_hdr);
|
|
tlen = sizeof(struct fcoe_crc_eof);
|
|
wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
|
|
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
crc = fcoe_fc_crc(fp);
|
|
|
|
/* copy port crc and eof to the skb buff */
|
|
if (skb_is_nonlinear(skb)) {
|
|
skb_frag_t *frag;
|
|
|
|
if (qedf_get_paged_crc_eof(skb, tlen)) {
|
|
kfree_skb(skb);
|
|
return -ENOMEM;
|
|
}
|
|
frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
|
|
cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag);
|
|
} else {
|
|
cp = skb_put(skb, tlen);
|
|
}
|
|
|
|
memset(cp, 0, sizeof(*cp));
|
|
cp->fcoe_eof = eof;
|
|
cp->fcoe_crc32 = cpu_to_le32(~crc);
|
|
if (skb_is_nonlinear(skb)) {
|
|
kunmap_atomic(cp);
|
|
cp = NULL;
|
|
}
|
|
|
|
|
|
/* adjust skb network/transport offsets to match mac/fcoe/port */
|
|
skb_push(skb, elen + hlen);
|
|
skb_reset_mac_header(skb);
|
|
skb_reset_network_header(skb);
|
|
skb->mac_len = elen;
|
|
skb->protocol = htons(ETH_P_FCOE);
|
|
|
|
/*
|
|
* Add VLAN tag to non-offload FCoE frame based on current stored VLAN
|
|
* for FIP/FCoE traffic.
|
|
*/
|
|
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
|
|
|
|
/* fill up mac and fcoe headers */
|
|
eh = eth_hdr(skb);
|
|
eh->h_proto = htons(ETH_P_FCOE);
|
|
if (qedf->ctlr.map_dest)
|
|
fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
|
|
else
|
|
/* insert GW address */
|
|
ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
|
|
|
|
/* Set the source MAC address */
|
|
ether_addr_copy(eh->h_source, qedf->data_src_addr);
|
|
|
|
hp = (struct fcoe_hdr *)(eh + 1);
|
|
memset(hp, 0, sizeof(*hp));
|
|
if (FC_FCOE_VER)
|
|
FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
|
|
hp->fcoe_sof = sof;
|
|
|
|
/*update tx stats */
|
|
stats = per_cpu_ptr(lport->stats, get_cpu());
|
|
stats->TxFrames++;
|
|
stats->TxWords += wlen;
|
|
put_cpu();
|
|
|
|
/* Get VLAN ID from skb for printing purposes */
|
|
__vlan_hwaccel_get_tag(skb, &vlan_tci);
|
|
|
|
/* send down to lld */
|
|
fr_dev(fp) = lport;
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
|
|
"src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
|
|
ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
|
|
vlan_tci);
|
|
if (qedf_dump_frames)
|
|
print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
|
|
1, skb->data, skb->len, false);
|
|
rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
|
|
if (rc) {
|
|
QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc);
|
|
kfree_skb(skb);
|
|
return rc;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
|
|
{
|
|
int rval = 0;
|
|
u32 *pbl;
|
|
dma_addr_t page;
|
|
int num_pages;
|
|
|
|
/* Calculate appropriate queue and PBL sizes */
|
|
fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
|
|
fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
|
|
fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
|
|
sizeof(void *);
|
|
fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
|
|
|
|
fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
|
|
&fcport->sq_dma, GFP_KERNEL);
|
|
if (!fcport->sq) {
|
|
QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
|
|
rval = 1;
|
|
goto out;
|
|
}
|
|
|
|
fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
|
|
fcport->sq_pbl_size,
|
|
&fcport->sq_pbl_dma, GFP_KERNEL);
|
|
if (!fcport->sq_pbl) {
|
|
QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
|
|
rval = 1;
|
|
goto out_free_sq;
|
|
}
|
|
|
|
/* Create PBL */
|
|
num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
|
|
page = fcport->sq_dma;
|
|
pbl = (u32 *)fcport->sq_pbl;
|
|
|
|
while (num_pages--) {
|
|
*pbl = U64_LO(page);
|
|
pbl++;
|
|
*pbl = U64_HI(page);
|
|
pbl++;
|
|
page += QEDF_PAGE_SIZE;
|
|
}
|
|
|
|
return rval;
|
|
|
|
out_free_sq:
|
|
dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
|
|
fcport->sq_dma);
|
|
out:
|
|
return rval;
|
|
}
|
|
|
|
static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
|
|
{
|
|
if (fcport->sq_pbl)
|
|
dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
|
|
fcport->sq_pbl, fcport->sq_pbl_dma);
|
|
if (fcport->sq)
|
|
dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
|
|
fcport->sq, fcport->sq_dma);
|
|
}
|
|
|
|
static int qedf_offload_connection(struct qedf_ctx *qedf,
|
|
struct qedf_rport *fcport)
|
|
{
|
|
struct qed_fcoe_params_offload conn_info;
|
|
u32 port_id;
|
|
int rval;
|
|
uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
|
|
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
|
|
"portid=%06x.\n", fcport->rdata->ids.port_id);
|
|
rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
|
|
&fcport->fw_cid, &fcport->p_doorbell);
|
|
if (rval) {
|
|
QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
|
|
"for portid=%06x.\n", fcport->rdata->ids.port_id);
|
|
rval = 1; /* For some reason qed returns 0 on failure here */
|
|
goto out;
|
|
}
|
|
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
|
|
"fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
|
|
fcport->fw_cid, fcport->handle);
|
|
|
|
memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
|
|
|
|
/* Fill in the offload connection info */
|
|
conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
|
|
|
|
conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
|
|
conn_info.sq_next_page_addr =
|
|
(dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
|
|
|
|
/* Need to use our FCoE MAC for the offload session */
|
|
ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
|
|
|
|
ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
|
|
|
|
conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
|
|
conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov;
|
|
conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
|
|
conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
|
|
|
|
/* Set VLAN data */
|
|
conn_info.vlan_tag = qedf->vlan_id <<
|
|
FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
|
|
conn_info.vlan_tag |=
|
|
qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
|
|
conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
|
|
FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
|
|
|
|
/* Set host port source id */
|
|
port_id = fc_host_port_id(qedf->lport->host);
|
|
fcport->sid = port_id;
|
|
conn_info.s_id.addr_hi = (port_id & 0x000000FF);
|
|
conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
|
|
conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
|
|
|
|
conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
|
|
|
|
/* Set remote port destination id */
|
|
port_id = fcport->rdata->rport->port_id;
|
|
conn_info.d_id.addr_hi = (port_id & 0x000000FF);
|
|
conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
|
|
conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
|
|
|
|
conn_info.def_q_idx = 0; /* Default index for send queue? */
|
|
|
|
/* Set FC-TAPE specific flags if needed */
|
|
if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
|
|
"Enable CONF, REC for portid=%06x.\n",
|
|
fcport->rdata->ids.port_id);
|
|
conn_info.flags |= 1 <<
|
|
FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
|
|
conn_info.flags |=
|
|
((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
|
|
FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
|
|
}
|
|
|
|
rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
|
|
if (rval) {
|
|
QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
|
|
"for portid=%06x.\n", fcport->rdata->ids.port_id);
|
|
goto out_free_conn;
|
|
} else
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
|
|
"succeeded portid=%06x total_sqe=%d.\n",
|
|
fcport->rdata->ids.port_id, total_sqe);
|
|
|
|
spin_lock_init(&fcport->rport_lock);
|
|
atomic_set(&fcport->free_sqes, total_sqe);
|
|
return 0;
|
|
out_free_conn:
|
|
qed_ops->release_conn(qedf->cdev, fcport->handle);
|
|
out:
|
|
return rval;
|
|
}
|
|
|
|
#define QEDF_TERM_BUFF_SIZE 10
|
|
static void qedf_upload_connection(struct qedf_ctx *qedf,
|
|
struct qedf_rport *fcport)
|
|
{
|
|
void *term_params;
|
|
dma_addr_t term_params_dma;
|
|
|
|
/* Term params needs to be a DMA coherent buffer as qed shared the
|
|
* physical DMA address with the firmware. The buffer may be used in
|
|
* the receive path so we may eventually have to move this.
|
|
*/
|
|
term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
|
|
&term_params_dma, GFP_KERNEL);
|
|
if (!term_params)
|
|
return;
|
|
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
|
|
"port_id=%06x.\n", fcport->rdata->ids.port_id);
|
|
|
|
qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
|
|
qed_ops->release_conn(qedf->cdev, fcport->handle);
|
|
|
|
dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
|
|
term_params_dma);
|
|
}
|
|
|
|
static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
|
|
struct qedf_rport *fcport)
|
|
{
|
|
struct fc_rport_priv *rdata = fcport->rdata;
|
|
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
|
|
fcport->rdata->ids.port_id);
|
|
|
|
/* Flush any remaining i/o's before we upload the connection */
|
|
qedf_flush_active_ios(fcport, -1);
|
|
|
|
if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
|
|
qedf_upload_connection(qedf, fcport);
|
|
qedf_free_sq(qedf, fcport);
|
|
fcport->rdata = NULL;
|
|
fcport->qedf = NULL;
|
|
kref_put(&rdata->kref, fc_rport_destroy);
|
|
}
|
|
|
|
/*
|
|
* This event_callback is called after successful completion of libfc
|
|
* initiated target login. qedf can proceed with initiating the session
|
|
* establishment.
|
|
*/
|
|
static void qedf_rport_event_handler(struct fc_lport *lport,
|
|
struct fc_rport_priv *rdata,
|
|
enum fc_rport_event event)
|
|
{
|
|
struct qedf_ctx *qedf = lport_priv(lport);
|
|
struct fc_rport *rport = rdata->rport;
|
|
struct fc_rport_libfc_priv *rp;
|
|
struct qedf_rport *fcport;
|
|
u32 port_id;
|
|
int rval;
|
|
unsigned long flags;
|
|
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
|
|
"port_id = 0x%x\n", event, rdata->ids.port_id);
|
|
|
|
switch (event) {
|
|
case RPORT_EV_READY:
|
|
if (!rport) {
|
|
QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
|
|
break;
|
|
}
|
|
|
|
rp = rport->dd_data;
|
|
fcport = (struct qedf_rport *)&rp[1];
|
|
fcport->qedf = qedf;
|
|
|
|
if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
|
|
"portid=0x%x as max number of offloaded sessions "
|
|
"reached.\n", rdata->ids.port_id);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Don't try to offload the session again. Can happen when we
|
|
* get an ADISC
|
|
*/
|
|
if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
|
|
QEDF_WARN(&(qedf->dbg_ctx), "Session already "
|
|
"offloaded, portid=0x%x.\n",
|
|
rdata->ids.port_id);
|
|
return;
|
|
}
|
|
|
|
if (rport->port_id == FC_FID_DIR_SERV) {
|
|
/*
|
|
* qedf_rport structure doesn't exist for
|
|
* directory server.
|
|
* We should not come here, as lport will
|
|
* take care of fabric login
|
|
*/
|
|
QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
|
|
"exist for dir server port_id=%x\n",
|
|
rdata->ids.port_id);
|
|
break;
|
|
}
|
|
|
|
if (rdata->spp_type != FC_TYPE_FCP) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"Not offloading since spp type isn't FCP\n");
|
|
break;
|
|
}
|
|
if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"Not FCP target so not offloading\n");
|
|
break;
|
|
}
|
|
|
|
/* Initial reference held on entry, so this can't fail */
|
|
kref_get(&rdata->kref);
|
|
fcport->rdata = rdata;
|
|
fcport->rport = rport;
|
|
|
|
rval = qedf_alloc_sq(qedf, fcport);
|
|
if (rval) {
|
|
qedf_cleanup_fcport(qedf, fcport);
|
|
break;
|
|
}
|
|
|
|
/* Set device type */
|
|
if (rdata->flags & FC_RP_FLAGS_RETRY &&
|
|
rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
|
|
!(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
|
|
fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"portid=%06x is a TAPE device.\n",
|
|
rdata->ids.port_id);
|
|
} else {
|
|
fcport->dev_type = QEDF_RPORT_TYPE_DISK;
|
|
}
|
|
|
|
rval = qedf_offload_connection(qedf, fcport);
|
|
if (rval) {
|
|
qedf_cleanup_fcport(qedf, fcport);
|
|
break;
|
|
}
|
|
|
|
/* Add fcport to list of qedf_ctx list of offloaded ports */
|
|
spin_lock_irqsave(&qedf->hba_lock, flags);
|
|
list_add_rcu(&fcport->peers, &qedf->fcports);
|
|
spin_unlock_irqrestore(&qedf->hba_lock, flags);
|
|
|
|
/*
|
|
* Set the session ready bit to let everyone know that this
|
|
* connection is ready for I/O
|
|
*/
|
|
set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
|
|
atomic_inc(&qedf->num_offloads);
|
|
|
|
break;
|
|
case RPORT_EV_LOGO:
|
|
case RPORT_EV_FAILED:
|
|
case RPORT_EV_STOP:
|
|
port_id = rdata->ids.port_id;
|
|
if (port_id == FC_FID_DIR_SERV)
|
|
break;
|
|
|
|
if (rdata->spp_type != FC_TYPE_FCP) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"No action since spp type isn't FCP\n");
|
|
break;
|
|
}
|
|
if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"Not FCP target so no action\n");
|
|
break;
|
|
}
|
|
|
|
if (!rport) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"port_id=%x - rport notcreated Yet!!\n", port_id);
|
|
break;
|
|
}
|
|
rp = rport->dd_data;
|
|
/*
|
|
* Perform session upload. Note that rdata->peers is already
|
|
* removed from disc->rports list before we get this event.
|
|
*/
|
|
fcport = (struct qedf_rport *)&rp[1];
|
|
|
|
spin_lock_irqsave(&fcport->rport_lock, flags);
|
|
/* Only free this fcport if it is offloaded already */
|
|
if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) &&
|
|
!test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
|
|
&fcport->flags)) {
|
|
set_bit(QEDF_RPORT_UPLOADING_CONNECTION,
|
|
&fcport->flags);
|
|
spin_unlock_irqrestore(&fcport->rport_lock, flags);
|
|
qedf_cleanup_fcport(qedf, fcport);
|
|
/*
|
|
* Remove fcport to list of qedf_ctx list of offloaded
|
|
* ports
|
|
*/
|
|
spin_lock_irqsave(&qedf->hba_lock, flags);
|
|
list_del_rcu(&fcport->peers);
|
|
spin_unlock_irqrestore(&qedf->hba_lock, flags);
|
|
|
|
clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
|
|
&fcport->flags);
|
|
atomic_dec(&qedf->num_offloads);
|
|
} else {
|
|
spin_unlock_irqrestore(&fcport->rport_lock, flags);
|
|
}
|
|
break;
|
|
|
|
case RPORT_EV_NONE:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void qedf_abort_io(struct fc_lport *lport)
|
|
{
|
|
/* NO-OP but need to fill in the template */
|
|
}
|
|
|
|
static void qedf_fcp_cleanup(struct fc_lport *lport)
|
|
{
|
|
/*
|
|
* NO-OP but need to fill in template to prevent a NULL
|
|
* function pointer dereference during link down. I/Os
|
|
* will be flushed when port is uploaded.
|
|
*/
|
|
}
|
|
|
|
static struct libfc_function_template qedf_lport_template = {
|
|
.frame_send = qedf_xmit,
|
|
.fcp_abort_io = qedf_abort_io,
|
|
.fcp_cleanup = qedf_fcp_cleanup,
|
|
.rport_event_callback = qedf_rport_event_handler,
|
|
.elsct_send = qedf_elsct_send,
|
|
};
|
|
|
|
static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
|
|
{
|
|
fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO);
|
|
|
|
qedf->ctlr.send = qedf_fip_send;
|
|
qedf->ctlr.get_src_addr = qedf_get_src_mac;
|
|
ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
|
|
}
|
|
|
|
static void qedf_setup_fdmi(struct qedf_ctx *qedf)
|
|
{
|
|
struct fc_lport *lport = qedf->lport;
|
|
u8 buf[8];
|
|
int pos;
|
|
uint32_t i;
|
|
|
|
/*
|
|
* fdmi_enabled needs to be set for libfc
|
|
* to execute FDMI registration
|
|
*/
|
|
lport->fdmi_enabled = 1;
|
|
|
|
/*
|
|
* Setup the necessary fc_host attributes to that will be used to fill
|
|
* in the FDMI information.
|
|
*/
|
|
|
|
/* Get the PCI-e Device Serial Number Capability */
|
|
pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
|
|
if (pos) {
|
|
pos += 4;
|
|
for (i = 0; i < 8; i++)
|
|
pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
|
|
|
|
snprintf(fc_host_serial_number(lport->host),
|
|
FC_SERIAL_NUMBER_SIZE,
|
|
"%02X%02X%02X%02X%02X%02X%02X%02X",
|
|
buf[7], buf[6], buf[5], buf[4],
|
|
buf[3], buf[2], buf[1], buf[0]);
|
|
} else
|
|
snprintf(fc_host_serial_number(lport->host),
|
|
FC_SERIAL_NUMBER_SIZE, "Unknown");
|
|
|
|
snprintf(fc_host_manufacturer(lport->host),
|
|
FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc.");
|
|
|
|
if (qedf->pdev->device == QL45xxx) {
|
|
snprintf(fc_host_model(lport->host),
|
|
FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx");
|
|
|
|
snprintf(fc_host_model_description(lport->host),
|
|
FC_SYMBOLIC_NAME_SIZE, "%s",
|
|
"Marvell FastLinQ QL45xxx FCoE Adapter");
|
|
}
|
|
|
|
if (qedf->pdev->device == QL41xxx) {
|
|
snprintf(fc_host_model(lport->host),
|
|
FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx");
|
|
|
|
snprintf(fc_host_model_description(lport->host),
|
|
FC_SYMBOLIC_NAME_SIZE, "%s",
|
|
"Marvell FastLinQ QL41xxx FCoE Adapter");
|
|
}
|
|
|
|
snprintf(fc_host_hardware_version(lport->host),
|
|
FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision);
|
|
|
|
snprintf(fc_host_driver_version(lport->host),
|
|
FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION);
|
|
|
|
snprintf(fc_host_firmware_version(lport->host),
|
|
FC_VERSION_STRING_SIZE, "%d.%d.%d.%d",
|
|
FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
|
|
FW_ENGINEERING_VERSION);
|
|
|
|
snprintf(fc_host_vendor_identifier(lport->host),
|
|
FC_VENDOR_IDENTIFIER, "%s", "Marvell");
|
|
|
|
}
|
|
|
|
static int qedf_lport_setup(struct qedf_ctx *qedf)
|
|
{
|
|
struct fc_lport *lport = qedf->lport;
|
|
|
|
lport->link_up = 0;
|
|
lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
|
|
lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
|
|
lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
|
|
FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
|
|
lport->boot_time = jiffies;
|
|
lport->e_d_tov = 2 * 1000;
|
|
lport->r_a_tov = 10 * 1000;
|
|
|
|
/* Set NPIV support */
|
|
lport->does_npiv = 1;
|
|
fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
|
|
|
|
fc_set_wwnn(lport, qedf->wwnn);
|
|
fc_set_wwpn(lport, qedf->wwpn);
|
|
|
|
if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) {
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"fcoe_libfc_config failed.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Allocate the exchange manager */
|
|
fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS,
|
|
0xfffe, NULL);
|
|
|
|
if (fc_lport_init_stats(lport))
|
|
return -ENOMEM;
|
|
|
|
/* Finish lport config */
|
|
fc_lport_config(lport);
|
|
|
|
/* Set max frame size */
|
|
fc_set_mfs(lport, QEDF_MFS);
|
|
fc_host_maxframe_size(lport->host) = lport->mfs;
|
|
|
|
/* Set default dev_loss_tmo based on module parameter */
|
|
fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
|
|
|
|
/* Set symbolic node name */
|
|
if (qedf->pdev->device == QL45xxx)
|
|
snprintf(fc_host_symbolic_name(lport->host), 256,
|
|
"Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION);
|
|
|
|
if (qedf->pdev->device == QL41xxx)
|
|
snprintf(fc_host_symbolic_name(lport->host), 256,
|
|
"Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION);
|
|
|
|
qedf_setup_fdmi(qedf);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* NPIV functions
|
|
*/
|
|
|
|
static int qedf_vport_libfc_config(struct fc_vport *vport,
|
|
struct fc_lport *lport)
|
|
{
|
|
lport->link_up = 0;
|
|
lport->qfull = 0;
|
|
lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
|
|
lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
|
|
lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
|
|
FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
|
|
lport->boot_time = jiffies;
|
|
lport->e_d_tov = 2 * 1000;
|
|
lport->r_a_tov = 10 * 1000;
|
|
lport->does_npiv = 1; /* Temporary until we add NPIV support */
|
|
|
|
/* Allocate stats for vport */
|
|
if (fc_lport_init_stats(lport))
|
|
return -ENOMEM;
|
|
|
|
/* Finish lport config */
|
|
fc_lport_config(lport);
|
|
|
|
/* offload related configuration */
|
|
lport->crc_offload = 0;
|
|
lport->seq_offload = 0;
|
|
lport->lro_enabled = 0;
|
|
lport->lro_xid = 0;
|
|
lport->lso_max = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qedf_vport_create(struct fc_vport *vport, bool disabled)
|
|
{
|
|
struct Scsi_Host *shost = vport_to_shost(vport);
|
|
struct fc_lport *n_port = shost_priv(shost);
|
|
struct fc_lport *vn_port;
|
|
struct qedf_ctx *base_qedf = lport_priv(n_port);
|
|
struct qedf_ctx *vport_qedf;
|
|
|
|
char buf[32];
|
|
int rc = 0;
|
|
|
|
rc = fcoe_validate_vport_create(vport);
|
|
if (rc) {
|
|
fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
|
|
QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
|
|
"WWPN (0x%s) already exists.\n", buf);
|
|
return rc;
|
|
}
|
|
|
|
if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
|
|
QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
|
|
"because link is not up.\n");
|
|
return -EIO;
|
|
}
|
|
|
|
vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
|
|
if (!vn_port) {
|
|
QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
|
|
"for vport.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
|
|
QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
|
|
buf);
|
|
|
|
/* Copy some fields from base_qedf */
|
|
vport_qedf = lport_priv(vn_port);
|
|
memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
|
|
|
|
/* Set qedf data specific to this vport */
|
|
vport_qedf->lport = vn_port;
|
|
/* Use same hba_lock as base_qedf */
|
|
vport_qedf->hba_lock = base_qedf->hba_lock;
|
|
vport_qedf->pdev = base_qedf->pdev;
|
|
vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
|
|
init_completion(&vport_qedf->flogi_compl);
|
|
INIT_LIST_HEAD(&vport_qedf->fcports);
|
|
INIT_DELAYED_WORK(&vport_qedf->stag_work, qedf_stag_change_work);
|
|
|
|
rc = qedf_vport_libfc_config(vport, vn_port);
|
|
if (rc) {
|
|
QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
|
|
"for lport stats.\n");
|
|
goto err;
|
|
}
|
|
|
|
fc_set_wwnn(vn_port, vport->node_name);
|
|
fc_set_wwpn(vn_port, vport->port_name);
|
|
vport_qedf->wwnn = vn_port->wwnn;
|
|
vport_qedf->wwpn = vn_port->wwpn;
|
|
|
|
vn_port->host->transportt = qedf_fc_vport_transport_template;
|
|
vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS;
|
|
vn_port->host->max_lun = qedf_max_lun;
|
|
vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
|
|
vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
|
|
vn_port->host->max_id = QEDF_MAX_SESSIONS;
|
|
|
|
rc = scsi_add_host(vn_port->host, &vport->dev);
|
|
if (rc) {
|
|
QEDF_WARN(&base_qedf->dbg_ctx,
|
|
"Error adding Scsi_Host rc=0x%x.\n", rc);
|
|
goto err;
|
|
}
|
|
|
|
/* Set default dev_loss_tmo based on module parameter */
|
|
fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
|
|
|
|
/* Init libfc stuffs */
|
|
memcpy(&vn_port->tt, &qedf_lport_template,
|
|
sizeof(qedf_lport_template));
|
|
fc_exch_init(vn_port);
|
|
fc_elsct_init(vn_port);
|
|
fc_lport_init(vn_port);
|
|
fc_disc_init(vn_port);
|
|
fc_disc_config(vn_port, vn_port);
|
|
|
|
|
|
/* Allocate the exchange manager */
|
|
shost = vport_to_shost(vport);
|
|
n_port = shost_priv(shost);
|
|
fc_exch_mgr_list_clone(n_port, vn_port);
|
|
|
|
/* Set max frame size */
|
|
fc_set_mfs(vn_port, QEDF_MFS);
|
|
|
|
fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
|
|
|
|
if (disabled) {
|
|
fc_vport_set_state(vport, FC_VPORT_DISABLED);
|
|
} else {
|
|
vn_port->boot_time = jiffies;
|
|
fc_fabric_login(vn_port);
|
|
fc_vport_setlink(vn_port);
|
|
}
|
|
|
|
QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
|
|
vn_port);
|
|
|
|
/* Set up debug context for vport */
|
|
vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
|
|
vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
|
|
|
|
return 0;
|
|
|
|
err:
|
|
scsi_host_put(vn_port->host);
|
|
return rc;
|
|
}
|
|
|
|
static int qedf_vport_destroy(struct fc_vport *vport)
|
|
{
|
|
struct Scsi_Host *shost = vport_to_shost(vport);
|
|
struct fc_lport *n_port = shost_priv(shost);
|
|
struct fc_lport *vn_port = vport->dd_data;
|
|
struct qedf_ctx *qedf = lport_priv(vn_port);
|
|
|
|
if (!qedf) {
|
|
QEDF_ERR(NULL, "qedf is NULL.\n");
|
|
goto out;
|
|
}
|
|
|
|
/* Set unloading bit on vport qedf_ctx to prevent more I/O */
|
|
set_bit(QEDF_UNLOADING, &qedf->flags);
|
|
|
|
mutex_lock(&n_port->lp_mutex);
|
|
list_del(&vn_port->list);
|
|
mutex_unlock(&n_port->lp_mutex);
|
|
|
|
fc_fabric_logoff(vn_port);
|
|
fc_lport_destroy(vn_port);
|
|
|
|
/* Detach from scsi-ml */
|
|
fc_remove_host(vn_port->host);
|
|
scsi_remove_host(vn_port->host);
|
|
|
|
/*
|
|
* Only try to release the exchange manager if the vn_port
|
|
* configuration is complete.
|
|
*/
|
|
if (vn_port->state == LPORT_ST_READY)
|
|
fc_exch_mgr_free(vn_port);
|
|
|
|
/* Free memory used by statistical counters */
|
|
fc_lport_free_stats(vn_port);
|
|
|
|
/* Release Scsi_Host */
|
|
scsi_host_put(vn_port->host);
|
|
|
|
out:
|
|
return 0;
|
|
}
|
|
|
|
static int qedf_vport_disable(struct fc_vport *vport, bool disable)
|
|
{
|
|
struct fc_lport *lport = vport->dd_data;
|
|
|
|
if (disable) {
|
|
fc_vport_set_state(vport, FC_VPORT_DISABLED);
|
|
fc_fabric_logoff(lport);
|
|
} else {
|
|
lport->boot_time = jiffies;
|
|
fc_fabric_login(lport);
|
|
fc_vport_setlink(lport);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* During removal we need to wait for all the vports associated with a port
|
|
* to be destroyed so we avoid a race condition where libfc is still trying
|
|
* to reap vports while the driver remove function has already reaped the
|
|
* driver contexts associated with the physical port.
|
|
*/
|
|
static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
|
|
{
|
|
struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
|
|
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
|
|
"Entered.\n");
|
|
while (fc_host->npiv_vports_inuse > 0) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
|
|
"Waiting for all vports to be reaped.\n");
|
|
msleep(1000);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* qedf_fcoe_reset - Resets the fcoe
|
|
*
|
|
* @shost: shost the reset is from
|
|
*
|
|
* Returns: always 0
|
|
*/
|
|
static int qedf_fcoe_reset(struct Scsi_Host *shost)
|
|
{
|
|
struct fc_lport *lport = shost_priv(shost);
|
|
|
|
qedf_ctx_soft_reset(lport);
|
|
return 0;
|
|
}
|
|
|
|
static void qedf_get_host_port_id(struct Scsi_Host *shost)
|
|
{
|
|
struct fc_lport *lport = shost_priv(shost);
|
|
|
|
fc_host_port_id(shost) = lport->port_id;
|
|
}
|
|
|
|
static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
|
|
*shost)
|
|
{
|
|
struct fc_host_statistics *qedf_stats;
|
|
struct fc_lport *lport = shost_priv(shost);
|
|
struct qedf_ctx *qedf = lport_priv(lport);
|
|
struct qed_fcoe_stats *fw_fcoe_stats;
|
|
|
|
qedf_stats = fc_get_host_stats(shost);
|
|
|
|
/* We don't collect offload stats for specific NPIV ports */
|
|
if (lport->vport)
|
|
goto out;
|
|
|
|
fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
|
|
if (!fw_fcoe_stats) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
|
|
"fw_fcoe_stats.\n");
|
|
goto out;
|
|
}
|
|
|
|
mutex_lock(&qedf->stats_mutex);
|
|
|
|
/* Query firmware for offload stats */
|
|
qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
|
|
|
|
/*
|
|
* The expectation is that we add our offload stats to the stats
|
|
* being maintained by libfc each time the fc_get_host_status callback
|
|
* is invoked. The additions are not carried over for each call to
|
|
* the fc_get_host_stats callback.
|
|
*/
|
|
qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
|
|
fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
|
|
fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
|
|
qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
|
|
fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
|
|
fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
|
|
qedf_stats->fcp_input_megabytes +=
|
|
do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
|
|
qedf_stats->fcp_output_megabytes +=
|
|
do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
|
|
qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
|
|
qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
|
|
qedf_stats->invalid_crc_count +=
|
|
fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
|
|
qedf_stats->dumped_frames =
|
|
fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
|
|
qedf_stats->error_frames +=
|
|
fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
|
|
qedf_stats->fcp_input_requests += qedf->input_requests;
|
|
qedf_stats->fcp_output_requests += qedf->output_requests;
|
|
qedf_stats->fcp_control_requests += qedf->control_requests;
|
|
qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
|
|
qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
|
|
|
|
mutex_unlock(&qedf->stats_mutex);
|
|
kfree(fw_fcoe_stats);
|
|
out:
|
|
return qedf_stats;
|
|
}
|
|
|
|
static struct fc_function_template qedf_fc_transport_fn = {
|
|
.show_host_node_name = 1,
|
|
.show_host_port_name = 1,
|
|
.show_host_supported_classes = 1,
|
|
.show_host_supported_fc4s = 1,
|
|
.show_host_active_fc4s = 1,
|
|
.show_host_maxframe_size = 1,
|
|
|
|
.get_host_port_id = qedf_get_host_port_id,
|
|
.show_host_port_id = 1,
|
|
.show_host_supported_speeds = 1,
|
|
.get_host_speed = fc_get_host_speed,
|
|
.show_host_speed = 1,
|
|
.show_host_port_type = 1,
|
|
.get_host_port_state = fc_get_host_port_state,
|
|
.show_host_port_state = 1,
|
|
.show_host_symbolic_name = 1,
|
|
|
|
/*
|
|
* Tell FC transport to allocate enough space to store the backpointer
|
|
* for the associate qedf_rport struct.
|
|
*/
|
|
.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
|
|
sizeof(struct qedf_rport)),
|
|
.show_rport_maxframe_size = 1,
|
|
.show_rport_supported_classes = 1,
|
|
.show_host_fabric_name = 1,
|
|
.show_starget_node_name = 1,
|
|
.show_starget_port_name = 1,
|
|
.show_starget_port_id = 1,
|
|
.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
|
|
.show_rport_dev_loss_tmo = 1,
|
|
.get_fc_host_stats = qedf_fc_get_host_stats,
|
|
.issue_fc_host_lip = qedf_fcoe_reset,
|
|
.vport_create = qedf_vport_create,
|
|
.vport_delete = qedf_vport_destroy,
|
|
.vport_disable = qedf_vport_disable,
|
|
.bsg_request = fc_lport_bsg_request,
|
|
};
|
|
|
|
static struct fc_function_template qedf_fc_vport_transport_fn = {
|
|
.show_host_node_name = 1,
|
|
.show_host_port_name = 1,
|
|
.show_host_supported_classes = 1,
|
|
.show_host_supported_fc4s = 1,
|
|
.show_host_active_fc4s = 1,
|
|
.show_host_maxframe_size = 1,
|
|
.show_host_port_id = 1,
|
|
.show_host_supported_speeds = 1,
|
|
.get_host_speed = fc_get_host_speed,
|
|
.show_host_speed = 1,
|
|
.show_host_port_type = 1,
|
|
.get_host_port_state = fc_get_host_port_state,
|
|
.show_host_port_state = 1,
|
|
.show_host_symbolic_name = 1,
|
|
.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
|
|
sizeof(struct qedf_rport)),
|
|
.show_rport_maxframe_size = 1,
|
|
.show_rport_supported_classes = 1,
|
|
.show_host_fabric_name = 1,
|
|
.show_starget_node_name = 1,
|
|
.show_starget_port_name = 1,
|
|
.show_starget_port_id = 1,
|
|
.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
|
|
.show_rport_dev_loss_tmo = 1,
|
|
.get_fc_host_stats = fc_get_host_stats,
|
|
.issue_fc_host_lip = qedf_fcoe_reset,
|
|
.bsg_request = fc_lport_bsg_request,
|
|
};
|
|
|
|
static bool qedf_fp_has_work(struct qedf_fastpath *fp)
|
|
{
|
|
struct qedf_ctx *qedf = fp->qedf;
|
|
struct global_queue *que;
|
|
struct qed_sb_info *sb_info = fp->sb_info;
|
|
struct status_block *sb = sb_info->sb_virt;
|
|
u16 prod_idx;
|
|
|
|
/* Get the pointer to the global CQ this completion is on */
|
|
que = qedf->global_queues[fp->sb_id];
|
|
|
|
/* Be sure all responses have been written to PI */
|
|
rmb();
|
|
|
|
/* Get the current firmware producer index */
|
|
prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
|
|
|
|
return (que->cq_prod_idx != prod_idx);
|
|
}
|
|
|
|
/*
|
|
* Interrupt handler code.
|
|
*/
|
|
|
|
/* Process completion queue and copy CQE contents for deferred processesing
|
|
*
|
|
* Return true if we should wake the I/O thread, false if not.
|
|
*/
|
|
static bool qedf_process_completions(struct qedf_fastpath *fp)
|
|
{
|
|
struct qedf_ctx *qedf = fp->qedf;
|
|
struct qed_sb_info *sb_info = fp->sb_info;
|
|
struct status_block *sb = sb_info->sb_virt;
|
|
struct global_queue *que;
|
|
u16 prod_idx;
|
|
struct fcoe_cqe *cqe;
|
|
struct qedf_io_work *io_work;
|
|
int num_handled = 0;
|
|
unsigned int cpu;
|
|
struct qedf_ioreq *io_req = NULL;
|
|
u16 xid;
|
|
u16 new_cqes;
|
|
u32 comp_type;
|
|
|
|
/* Get the current firmware producer index */
|
|
prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
|
|
|
|
/* Get the pointer to the global CQ this completion is on */
|
|
que = qedf->global_queues[fp->sb_id];
|
|
|
|
/* Calculate the amount of new elements since last processing */
|
|
new_cqes = (prod_idx >= que->cq_prod_idx) ?
|
|
(prod_idx - que->cq_prod_idx) :
|
|
0x10000 - que->cq_prod_idx + prod_idx;
|
|
|
|
/* Save producer index */
|
|
que->cq_prod_idx = prod_idx;
|
|
|
|
while (new_cqes) {
|
|
fp->completions++;
|
|
num_handled++;
|
|
cqe = &que->cq[que->cq_cons_idx];
|
|
|
|
comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
|
|
FCOE_CQE_CQE_TYPE_MASK;
|
|
|
|
/*
|
|
* Process unsolicited CQEs directly in the interrupt handler
|
|
* sine we need the fastpath ID
|
|
*/
|
|
if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
|
|
"Unsolicated CQE.\n");
|
|
qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
|
|
/*
|
|
* Don't add a work list item. Increment consumer
|
|
* consumer index and move on.
|
|
*/
|
|
goto inc_idx;
|
|
}
|
|
|
|
xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
|
|
io_req = &qedf->cmd_mgr->cmds[xid];
|
|
|
|
/*
|
|
* Figure out which percpu thread we should queue this I/O
|
|
* on.
|
|
*/
|
|
if (!io_req)
|
|
/* If there is not io_req assocated with this CQE
|
|
* just queue it on CPU 0
|
|
*/
|
|
cpu = 0;
|
|
else {
|
|
cpu = io_req->cpu;
|
|
io_req->int_cpu = smp_processor_id();
|
|
}
|
|
|
|
io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
|
|
if (!io_work) {
|
|
QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
|
|
"work for I/O completion.\n");
|
|
continue;
|
|
}
|
|
memset(io_work, 0, sizeof(struct qedf_io_work));
|
|
|
|
INIT_WORK(&io_work->work, qedf_fp_io_handler);
|
|
|
|
/* Copy contents of CQE for deferred processing */
|
|
memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
|
|
|
|
io_work->qedf = fp->qedf;
|
|
io_work->fp = NULL; /* Only used for unsolicited frames */
|
|
|
|
queue_work_on(cpu, qedf_io_wq, &io_work->work);
|
|
|
|
inc_idx:
|
|
que->cq_cons_idx++;
|
|
if (que->cq_cons_idx == fp->cq_num_entries)
|
|
que->cq_cons_idx = 0;
|
|
new_cqes--;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/* MSI-X fastpath handler code */
|
|
static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
|
|
{
|
|
struct qedf_fastpath *fp = dev_id;
|
|
|
|
if (!fp) {
|
|
QEDF_ERR(NULL, "fp is null.\n");
|
|
return IRQ_HANDLED;
|
|
}
|
|
if (!fp->sb_info) {
|
|
QEDF_ERR(NULL, "fp->sb_info in null.");
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/*
|
|
* Disable interrupts for this status block while we process new
|
|
* completions
|
|
*/
|
|
qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
|
|
|
|
while (1) {
|
|
qedf_process_completions(fp);
|
|
|
|
if (qedf_fp_has_work(fp) == 0) {
|
|
/* Update the sb information */
|
|
qed_sb_update_sb_idx(fp->sb_info);
|
|
|
|
/* Check for more work */
|
|
rmb();
|
|
|
|
if (qedf_fp_has_work(fp) == 0) {
|
|
/* Re-enable interrupts */
|
|
qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
|
|
return IRQ_HANDLED;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Do we ever want to break out of above loop? */
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/* simd handler for MSI/INTa */
|
|
static void qedf_simd_int_handler(void *cookie)
|
|
{
|
|
/* Cookie is qedf_ctx struct */
|
|
struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
|
|
|
|
QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
|
|
}
|
|
|
|
#define QEDF_SIMD_HANDLER_NUM 0
|
|
static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
|
|
{
|
|
int i;
|
|
u16 vector_idx = 0;
|
|
u32 vector;
|
|
|
|
if (qedf->int_info.msix_cnt) {
|
|
for (i = 0; i < qedf->int_info.used_cnt; i++) {
|
|
vector_idx = i * qedf->dev_info.common.num_hwfns +
|
|
qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
|
|
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
|
|
"Freeing IRQ #%d vector_idx=%d.\n",
|
|
i, vector_idx);
|
|
vector = qedf->int_info.msix[vector_idx].vector;
|
|
synchronize_irq(vector);
|
|
irq_set_affinity_hint(vector, NULL);
|
|
irq_set_affinity_notifier(vector, NULL);
|
|
free_irq(vector, &qedf->fp_array[i]);
|
|
}
|
|
} else
|
|
qed_ops->common->simd_handler_clean(qedf->cdev,
|
|
QEDF_SIMD_HANDLER_NUM);
|
|
|
|
qedf->int_info.used_cnt = 0;
|
|
qed_ops->common->set_fp_int(qedf->cdev, 0);
|
|
}
|
|
|
|
static int qedf_request_msix_irq(struct qedf_ctx *qedf)
|
|
{
|
|
int i, rc, cpu;
|
|
u16 vector_idx = 0;
|
|
u32 vector;
|
|
|
|
cpu = cpumask_first(cpu_online_mask);
|
|
for (i = 0; i < qedf->num_queues; i++) {
|
|
vector_idx = i * qedf->dev_info.common.num_hwfns +
|
|
qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
|
|
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
|
|
"Requesting IRQ #%d vector_idx=%d.\n",
|
|
i, vector_idx);
|
|
vector = qedf->int_info.msix[vector_idx].vector;
|
|
rc = request_irq(vector, qedf_msix_handler, 0, "qedf",
|
|
&qedf->fp_array[i]);
|
|
|
|
if (rc) {
|
|
QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
|
|
qedf_sync_free_irqs(qedf);
|
|
return rc;
|
|
}
|
|
|
|
qedf->int_info.used_cnt++;
|
|
rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu));
|
|
cpu = cpumask_next(cpu, cpu_online_mask);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qedf_setup_int(struct qedf_ctx *qedf)
|
|
{
|
|
int rc = 0;
|
|
|
|
/*
|
|
* Learn interrupt configuration
|
|
*/
|
|
rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
|
|
if (rc <= 0)
|
|
return 0;
|
|
|
|
rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
|
|
if (rc)
|
|
return 0;
|
|
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
|
|
"0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
|
|
num_online_cpus());
|
|
|
|
if (qedf->int_info.msix_cnt)
|
|
return qedf_request_msix_irq(qedf);
|
|
|
|
qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
|
|
QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
|
|
qedf->int_info.used_cnt = 1;
|
|
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"Cannot load driver due to a lack of MSI-X vectors.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Main function for libfc frame reception */
|
|
static void qedf_recv_frame(struct qedf_ctx *qedf,
|
|
struct sk_buff *skb)
|
|
{
|
|
u32 fr_len;
|
|
struct fc_lport *lport;
|
|
struct fc_frame_header *fh;
|
|
struct fcoe_crc_eof crc_eof;
|
|
struct fc_frame *fp;
|
|
u8 *mac = NULL;
|
|
u8 *dest_mac = NULL;
|
|
struct fcoe_hdr *hp;
|
|
struct qedf_rport *fcport;
|
|
struct fc_lport *vn_port;
|
|
u32 f_ctl;
|
|
|
|
lport = qedf->lport;
|
|
if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
|
|
QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
if (skb_is_nonlinear(skb))
|
|
skb_linearize(skb);
|
|
mac = eth_hdr(skb)->h_source;
|
|
dest_mac = eth_hdr(skb)->h_dest;
|
|
|
|
/* Pull the header */
|
|
hp = (struct fcoe_hdr *)skb->data;
|
|
fh = (struct fc_frame_header *) skb_transport_header(skb);
|
|
skb_pull(skb, sizeof(struct fcoe_hdr));
|
|
fr_len = skb->len - sizeof(struct fcoe_crc_eof);
|
|
|
|
fp = (struct fc_frame *)skb;
|
|
fc_frame_init(fp);
|
|
fr_dev(fp) = lport;
|
|
fr_sof(fp) = hp->fcoe_sof;
|
|
if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
|
|
QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n");
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
fr_eof(fp) = crc_eof.fcoe_eof;
|
|
fr_crc(fp) = crc_eof.fcoe_crc32;
|
|
if (pskb_trim(skb, fr_len)) {
|
|
QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n");
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
fh = fc_frame_header_get(fp);
|
|
|
|
/*
|
|
* Invalid frame filters.
|
|
*/
|
|
|
|
if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
|
|
fh->fh_type == FC_TYPE_FCP) {
|
|
/* Drop FCP data. We dont this in L2 path */
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
|
|
fh->fh_type == FC_TYPE_ELS) {
|
|
switch (fc_frame_payload_op(fp)) {
|
|
case ELS_LOGO:
|
|
if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
|
|
/* drop non-FIP LOGO */
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
|
|
/* Drop incoming ABTS */
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
|
|
"FC frame d_id mismatch with MAC %pM.\n", dest_mac);
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
if (qedf->ctlr.state) {
|
|
if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
|
|
"Wrong source address: mac:%pM dest_addr:%pM.\n",
|
|
mac, qedf->ctlr.dest_addr);
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
}
|
|
|
|
vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
|
|
|
|
/*
|
|
* If the destination ID from the frame header does not match what we
|
|
* have on record for lport and the search for a NPIV port came up
|
|
* empty then this is not addressed to our port so simply drop it.
|
|
*/
|
|
if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
|
|
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
|
|
"Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n",
|
|
lport->port_id, ntoh24(fh->fh_d_id));
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
f_ctl = ntoh24(fh->fh_f_ctl);
|
|
if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
|
|
(f_ctl & FC_FC_EX_CTX)) {
|
|
/* Drop incoming ABTS response that has both SEQ/EX CTX set */
|
|
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
|
|
"Dropping ABTS response as both SEQ/EX CTX set.\n");
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* If a connection is uploading, drop incoming FCoE frames as there
|
|
* is a small window where we could try to return a frame while libfc
|
|
* is trying to clean things up.
|
|
*/
|
|
|
|
/* Get fcport associated with d_id if it exists */
|
|
fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
|
|
|
|
if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
|
|
&fcport->flags)) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
|
|
"Connection uploading, dropping fp=%p.\n", fp);
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
|
|
"skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
|
|
ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
|
|
fh->fh_type);
|
|
if (qedf_dump_frames)
|
|
print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
|
|
1, skb->data, skb->len, false);
|
|
fc_exch_recv(lport, fp);
|
|
}
|
|
|
|
static void qedf_ll2_process_skb(struct work_struct *work)
|
|
{
|
|
struct qedf_skb_work *skb_work =
|
|
container_of(work, struct qedf_skb_work, work);
|
|
struct qedf_ctx *qedf = skb_work->qedf;
|
|
struct sk_buff *skb = skb_work->skb;
|
|
struct ethhdr *eh;
|
|
|
|
if (!qedf) {
|
|
QEDF_ERR(NULL, "qedf is NULL\n");
|
|
goto err_out;
|
|
}
|
|
|
|
eh = (struct ethhdr *)skb->data;
|
|
|
|
/* Undo VLAN encapsulation */
|
|
if (eh->h_proto == htons(ETH_P_8021Q)) {
|
|
memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
|
|
eh = skb_pull(skb, VLAN_HLEN);
|
|
skb_reset_mac_header(skb);
|
|
}
|
|
|
|
/*
|
|
* Process either a FIP frame or FCoE frame based on the
|
|
* protocol value. If it's not either just drop the
|
|
* frame.
|
|
*/
|
|
if (eh->h_proto == htons(ETH_P_FIP)) {
|
|
qedf_fip_recv(qedf, skb);
|
|
goto out;
|
|
} else if (eh->h_proto == htons(ETH_P_FCOE)) {
|
|
__skb_pull(skb, ETH_HLEN);
|
|
qedf_recv_frame(qedf, skb);
|
|
goto out;
|
|
} else
|
|
goto err_out;
|
|
|
|
err_out:
|
|
kfree_skb(skb);
|
|
out:
|
|
kfree(skb_work);
|
|
return;
|
|
}
|
|
|
|
static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
|
|
u32 arg1, u32 arg2)
|
|
{
|
|
struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
|
|
struct qedf_skb_work *skb_work;
|
|
|
|
if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
|
|
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
|
|
"Dropping frame as link state is down.\n");
|
|
kfree_skb(skb);
|
|
return 0;
|
|
}
|
|
|
|
skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
|
|
if (!skb_work) {
|
|
QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
|
|
"dropping frame.\n");
|
|
kfree_skb(skb);
|
|
return 0;
|
|
}
|
|
|
|
INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
|
|
skb_work->skb = skb;
|
|
skb_work->qedf = qedf;
|
|
queue_work(qedf->ll2_recv_wq, &skb_work->work);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
|
|
.rx_cb = qedf_ll2_rx,
|
|
.tx_cb = NULL,
|
|
};
|
|
|
|
/* Main thread to process I/O completions */
|
|
void qedf_fp_io_handler(struct work_struct *work)
|
|
{
|
|
struct qedf_io_work *io_work =
|
|
container_of(work, struct qedf_io_work, work);
|
|
u32 comp_type;
|
|
|
|
/*
|
|
* Deferred part of unsolicited CQE sends
|
|
* frame to libfc.
|
|
*/
|
|
comp_type = (io_work->cqe.cqe_data >>
|
|
FCOE_CQE_CQE_TYPE_SHIFT) &
|
|
FCOE_CQE_CQE_TYPE_MASK;
|
|
if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
|
|
io_work->fp)
|
|
fc_exch_recv(io_work->qedf->lport, io_work->fp);
|
|
else
|
|
qedf_process_cqe(io_work->qedf, &io_work->cqe);
|
|
|
|
kfree(io_work);
|
|
}
|
|
|
|
static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
|
|
struct qed_sb_info *sb_info, u16 sb_id)
|
|
{
|
|
struct status_block *sb_virt;
|
|
dma_addr_t sb_phys;
|
|
int ret;
|
|
|
|
sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
|
|
sizeof(struct status_block), &sb_phys, GFP_KERNEL);
|
|
|
|
if (!sb_virt) {
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"Status block allocation failed for id = %d.\n",
|
|
sb_id);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
|
|
sb_id, QED_SB_TYPE_STORAGE);
|
|
|
|
if (ret) {
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"Status block initialization failed (0x%x) for id = %d.\n",
|
|
ret, sb_id);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
|
|
{
|
|
if (sb_info->sb_virt)
|
|
dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
|
|
(void *)sb_info->sb_virt, sb_info->sb_phys);
|
|
}
|
|
|
|
static void qedf_destroy_sb(struct qedf_ctx *qedf)
|
|
{
|
|
int id;
|
|
struct qedf_fastpath *fp = NULL;
|
|
|
|
for (id = 0; id < qedf->num_queues; id++) {
|
|
fp = &(qedf->fp_array[id]);
|
|
if (fp->sb_id == QEDF_SB_ID_NULL)
|
|
break;
|
|
qedf_free_sb(qedf, fp->sb_info);
|
|
kfree(fp->sb_info);
|
|
}
|
|
kfree(qedf->fp_array);
|
|
}
|
|
|
|
static int qedf_prepare_sb(struct qedf_ctx *qedf)
|
|
{
|
|
int id;
|
|
struct qedf_fastpath *fp;
|
|
int ret;
|
|
|
|
qedf->fp_array =
|
|
kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
|
|
GFP_KERNEL);
|
|
|
|
if (!qedf->fp_array) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
|
|
"failed.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
for (id = 0; id < qedf->num_queues; id++) {
|
|
fp = &(qedf->fp_array[id]);
|
|
fp->sb_id = QEDF_SB_ID_NULL;
|
|
fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
|
|
if (!fp->sb_info) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
|
|
"allocation failed.\n");
|
|
goto err;
|
|
}
|
|
ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
|
|
if (ret) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
|
|
"initialization failed.\n");
|
|
goto err;
|
|
}
|
|
fp->sb_id = id;
|
|
fp->qedf = qedf;
|
|
fp->cq_num_entries =
|
|
qedf->global_queues[id]->cq_mem_size /
|
|
sizeof(struct fcoe_cqe);
|
|
}
|
|
err:
|
|
return 0;
|
|
}
|
|
|
|
void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
|
|
{
|
|
u16 xid;
|
|
struct qedf_ioreq *io_req;
|
|
struct qedf_rport *fcport;
|
|
u32 comp_type;
|
|
|
|
comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
|
|
FCOE_CQE_CQE_TYPE_MASK;
|
|
|
|
xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
|
|
io_req = &qedf->cmd_mgr->cmds[xid];
|
|
|
|
/* Completion not for a valid I/O anymore so just return */
|
|
if (!io_req) {
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"io_req is NULL for xid=0x%x.\n", xid);
|
|
return;
|
|
}
|
|
|
|
fcport = io_req->fcport;
|
|
|
|
if (fcport == NULL) {
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"fcport is NULL for xid=0x%x io_req=%p.\n",
|
|
xid, io_req);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Check that fcport is offloaded. If it isn't then the spinlock
|
|
* isn't valid and shouldn't be taken. We should just return.
|
|
*/
|
|
if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"Session not offloaded yet, fcport = %p.\n", fcport);
|
|
return;
|
|
}
|
|
|
|
|
|
switch (comp_type) {
|
|
case FCOE_GOOD_COMPLETION_CQE_TYPE:
|
|
atomic_inc(&fcport->free_sqes);
|
|
switch (io_req->cmd_type) {
|
|
case QEDF_SCSI_CMD:
|
|
qedf_scsi_completion(qedf, cqe, io_req);
|
|
break;
|
|
case QEDF_ELS:
|
|
qedf_process_els_compl(qedf, cqe, io_req);
|
|
break;
|
|
case QEDF_TASK_MGMT_CMD:
|
|
qedf_process_tmf_compl(qedf, cqe, io_req);
|
|
break;
|
|
case QEDF_SEQ_CLEANUP:
|
|
qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
|
|
break;
|
|
}
|
|
break;
|
|
case FCOE_ERROR_DETECTION_CQE_TYPE:
|
|
atomic_inc(&fcport->free_sqes);
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
|
|
"Error detect CQE.\n");
|
|
qedf_process_error_detect(qedf, cqe, io_req);
|
|
break;
|
|
case FCOE_EXCH_CLEANUP_CQE_TYPE:
|
|
atomic_inc(&fcport->free_sqes);
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
|
|
"Cleanup CQE.\n");
|
|
qedf_process_cleanup_compl(qedf, cqe, io_req);
|
|
break;
|
|
case FCOE_ABTS_CQE_TYPE:
|
|
atomic_inc(&fcport->free_sqes);
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
|
|
"Abort CQE.\n");
|
|
qedf_process_abts_compl(qedf, cqe, io_req);
|
|
break;
|
|
case FCOE_DUMMY_CQE_TYPE:
|
|
atomic_inc(&fcport->free_sqes);
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
|
|
"Dummy CQE.\n");
|
|
break;
|
|
case FCOE_LOCAL_COMP_CQE_TYPE:
|
|
atomic_inc(&fcport->free_sqes);
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
|
|
"Local completion CQE.\n");
|
|
break;
|
|
case FCOE_WARNING_CQE_TYPE:
|
|
atomic_inc(&fcport->free_sqes);
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
|
|
"Warning CQE.\n");
|
|
qedf_process_warning_compl(qedf, cqe, io_req);
|
|
break;
|
|
case MAX_FCOE_CQE_TYPE:
|
|
atomic_inc(&fcport->free_sqes);
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
|
|
"Max FCoE CQE.\n");
|
|
break;
|
|
default:
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
|
|
"Default CQE.\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void qedf_free_bdq(struct qedf_ctx *qedf)
|
|
{
|
|
int i;
|
|
|
|
if (qedf->bdq_pbl_list)
|
|
dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
|
|
qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
|
|
|
|
if (qedf->bdq_pbl)
|
|
dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
|
|
qedf->bdq_pbl, qedf->bdq_pbl_dma);
|
|
|
|
for (i = 0; i < QEDF_BDQ_SIZE; i++) {
|
|
if (qedf->bdq[i].buf_addr) {
|
|
dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
|
|
qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void qedf_free_global_queues(struct qedf_ctx *qedf)
|
|
{
|
|
int i;
|
|
struct global_queue **gl = qedf->global_queues;
|
|
|
|
for (i = 0; i < qedf->num_queues; i++) {
|
|
if (!gl[i])
|
|
continue;
|
|
|
|
if (gl[i]->cq)
|
|
dma_free_coherent(&qedf->pdev->dev,
|
|
gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
|
|
if (gl[i]->cq_pbl)
|
|
dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
|
|
gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
|
|
|
|
kfree(gl[i]);
|
|
}
|
|
|
|
qedf_free_bdq(qedf);
|
|
}
|
|
|
|
static int qedf_alloc_bdq(struct qedf_ctx *qedf)
|
|
{
|
|
int i;
|
|
struct scsi_bd *pbl;
|
|
u64 *list;
|
|
dma_addr_t page;
|
|
|
|
/* Alloc dma memory for BDQ buffers */
|
|
for (i = 0; i < QEDF_BDQ_SIZE; i++) {
|
|
qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
|
|
QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
|
|
if (!qedf->bdq[i].buf_addr) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
|
|
"buffer %d.\n", i);
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
|
|
/* Alloc dma memory for BDQ page buffer list */
|
|
qedf->bdq_pbl_mem_size =
|
|
QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
|
|
qedf->bdq_pbl_mem_size =
|
|
ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
|
|
|
|
qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
|
|
qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
|
|
if (!qedf->bdq_pbl) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"BDQ PBL addr=0x%p dma=%pad\n",
|
|
qedf->bdq_pbl, &qedf->bdq_pbl_dma);
|
|
|
|
/*
|
|
* Populate BDQ PBL with physical and virtual address of individual
|
|
* BDQ buffers
|
|
*/
|
|
pbl = (struct scsi_bd *)qedf->bdq_pbl;
|
|
for (i = 0; i < QEDF_BDQ_SIZE; i++) {
|
|
pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
|
|
pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
|
|
pbl->opaque.fcoe_opaque.hi = 0;
|
|
/* Opaque lo data is an index into the BDQ array */
|
|
pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
|
|
pbl++;
|
|
}
|
|
|
|
/* Allocate list of PBL pages */
|
|
qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev,
|
|
QEDF_PAGE_SIZE,
|
|
&qedf->bdq_pbl_list_dma,
|
|
GFP_KERNEL);
|
|
if (!qedf->bdq_pbl_list) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/*
|
|
* Now populate PBL list with pages that contain pointers to the
|
|
* individual buffers.
|
|
*/
|
|
qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
|
|
QEDF_PAGE_SIZE;
|
|
list = (u64 *)qedf->bdq_pbl_list;
|
|
page = qedf->bdq_pbl_list_dma;
|
|
for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
|
|
*list = qedf->bdq_pbl_dma;
|
|
list++;
|
|
page += QEDF_PAGE_SIZE;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
|
|
{
|
|
u32 *list;
|
|
int i;
|
|
int status;
|
|
u32 *pbl;
|
|
dma_addr_t page;
|
|
int num_pages;
|
|
|
|
/* Allocate and map CQs, RQs */
|
|
/*
|
|
* Number of global queues (CQ / RQ). This should
|
|
* be <= number of available MSIX vectors for the PF
|
|
*/
|
|
if (!qedf->num_queues) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/*
|
|
* Make sure we allocated the PBL that will contain the physical
|
|
* addresses of our queues
|
|
*/
|
|
if (!qedf->p_cpuq) {
|
|
status = -EINVAL;
|
|
QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n");
|
|
goto mem_alloc_failure;
|
|
}
|
|
|
|
qedf->global_queues = kzalloc((sizeof(struct global_queue *)
|
|
* qedf->num_queues), GFP_KERNEL);
|
|
if (!qedf->global_queues) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
|
|
"queues array ptr memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"qedf->global_queues=%p.\n", qedf->global_queues);
|
|
|
|
/* Allocate DMA coherent buffers for BDQ */
|
|
status = qedf_alloc_bdq(qedf);
|
|
if (status) {
|
|
QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n");
|
|
goto mem_alloc_failure;
|
|
}
|
|
|
|
/* Allocate a CQ and an associated PBL for each MSI-X vector */
|
|
for (i = 0; i < qedf->num_queues; i++) {
|
|
qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
|
|
GFP_KERNEL);
|
|
if (!qedf->global_queues[i]) {
|
|
QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
|
|
"global queue %d.\n", i);
|
|
status = -ENOMEM;
|
|
goto mem_alloc_failure;
|
|
}
|
|
|
|
qedf->global_queues[i]->cq_mem_size =
|
|
FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
|
|
qedf->global_queues[i]->cq_mem_size =
|
|
ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
|
|
|
|
qedf->global_queues[i]->cq_pbl_size =
|
|
(qedf->global_queues[i]->cq_mem_size /
|
|
PAGE_SIZE) * sizeof(void *);
|
|
qedf->global_queues[i]->cq_pbl_size =
|
|
ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
|
|
|
|
qedf->global_queues[i]->cq =
|
|
dma_alloc_coherent(&qedf->pdev->dev,
|
|
qedf->global_queues[i]->cq_mem_size,
|
|
&qedf->global_queues[i]->cq_dma,
|
|
GFP_KERNEL);
|
|
|
|
if (!qedf->global_queues[i]->cq) {
|
|
QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
|
|
status = -ENOMEM;
|
|
goto mem_alloc_failure;
|
|
}
|
|
|
|
qedf->global_queues[i]->cq_pbl =
|
|
dma_alloc_coherent(&qedf->pdev->dev,
|
|
qedf->global_queues[i]->cq_pbl_size,
|
|
&qedf->global_queues[i]->cq_pbl_dma,
|
|
GFP_KERNEL);
|
|
|
|
if (!qedf->global_queues[i]->cq_pbl) {
|
|
QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
|
|
status = -ENOMEM;
|
|
goto mem_alloc_failure;
|
|
}
|
|
|
|
/* Create PBL */
|
|
num_pages = qedf->global_queues[i]->cq_mem_size /
|
|
QEDF_PAGE_SIZE;
|
|
page = qedf->global_queues[i]->cq_dma;
|
|
pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
|
|
|
|
while (num_pages--) {
|
|
*pbl = U64_LO(page);
|
|
pbl++;
|
|
*pbl = U64_HI(page);
|
|
pbl++;
|
|
page += QEDF_PAGE_SIZE;
|
|
}
|
|
/* Set the initial consumer index for cq */
|
|
qedf->global_queues[i]->cq_cons_idx = 0;
|
|
}
|
|
|
|
list = (u32 *)qedf->p_cpuq;
|
|
|
|
/*
|
|
* The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
|
|
* CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
|
|
* to the physical address which contains an array of pointers to
|
|
* the physical addresses of the specific queue pages.
|
|
*/
|
|
for (i = 0; i < qedf->num_queues; i++) {
|
|
*list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
|
|
list++;
|
|
*list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
|
|
list++;
|
|
*list = U64_LO(0);
|
|
list++;
|
|
*list = U64_HI(0);
|
|
list++;
|
|
}
|
|
|
|
return 0;
|
|
|
|
mem_alloc_failure:
|
|
qedf_free_global_queues(qedf);
|
|
return status;
|
|
}
|
|
|
|
static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
|
|
{
|
|
u8 sq_num_pbl_pages;
|
|
u32 sq_mem_size;
|
|
u32 cq_mem_size;
|
|
u32 cq_num_entries;
|
|
int rval;
|
|
|
|
/*
|
|
* The number of completion queues/fastpath interrupts/status blocks
|
|
* we allocation is the minimum off:
|
|
*
|
|
* Number of CPUs
|
|
* Number allocated by qed for our PCI function
|
|
*/
|
|
qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
|
|
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
|
|
qedf->num_queues);
|
|
|
|
qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev,
|
|
qedf->num_queues * sizeof(struct qedf_glbl_q_params),
|
|
&qedf->hw_p_cpuq, GFP_KERNEL);
|
|
|
|
if (!qedf->p_cpuq) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n");
|
|
return 1;
|
|
}
|
|
|
|
rval = qedf_alloc_global_queues(qedf);
|
|
if (rval) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
|
|
"failed.\n");
|
|
return 1;
|
|
}
|
|
|
|
/* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
|
|
sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
|
|
sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
|
|
sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
|
|
|
|
/* Calculate CQ num entries */
|
|
cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
|
|
cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
|
|
cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
|
|
|
|
memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
|
|
|
|
/* Setup the value for fcoe PF */
|
|
qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
|
|
qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
|
|
qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
|
|
(u64)qedf->hw_p_cpuq;
|
|
qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
|
|
|
|
qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
|
|
|
|
qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
|
|
qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
|
|
|
|
/* log_page_size: 12 for 4KB pages */
|
|
qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
|
|
|
|
qedf->pf_params.fcoe_pf_params.mtu = 9000;
|
|
qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
|
|
qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
|
|
|
|
/* BDQ address and size */
|
|
qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
|
|
qedf->bdq_pbl_list_dma;
|
|
qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
|
|
qedf->bdq_pbl_list_num_entries;
|
|
qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
|
|
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
|
|
qedf->bdq_pbl_list,
|
|
qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
|
|
qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
|
|
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"cq_num_entries=%d.\n",
|
|
qedf->pf_params.fcoe_pf_params.cq_num_entries);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Free DMA coherent memory for array of queue pointers we pass to qed */
|
|
static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
|
|
{
|
|
size_t size = 0;
|
|
|
|
if (qedf->p_cpuq) {
|
|
size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
|
|
dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq,
|
|
qedf->hw_p_cpuq);
|
|
}
|
|
|
|
qedf_free_global_queues(qedf);
|
|
|
|
kfree(qedf->global_queues);
|
|
}
|
|
|
|
/*
|
|
* PCI driver functions
|
|
*/
|
|
|
|
static const struct pci_device_id qedf_pci_tbl[] = {
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
|
|
{0}
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
|
|
|
|
static struct pci_driver qedf_pci_driver = {
|
|
.name = QEDF_MODULE_NAME,
|
|
.id_table = qedf_pci_tbl,
|
|
.probe = qedf_probe,
|
|
.remove = qedf_remove,
|
|
.shutdown = qedf_shutdown,
|
|
};
|
|
|
|
static int __qedf_probe(struct pci_dev *pdev, int mode)
|
|
{
|
|
int rc = -EINVAL;
|
|
struct fc_lport *lport;
|
|
struct qedf_ctx *qedf = NULL;
|
|
struct Scsi_Host *host;
|
|
bool is_vf = false;
|
|
struct qed_ll2_params params;
|
|
char host_buf[20];
|
|
struct qed_link_params link_params;
|
|
int status;
|
|
void *task_start, *task_end;
|
|
struct qed_slowpath_params slowpath_params;
|
|
struct qed_probe_params qed_params;
|
|
u16 retry_cnt = 10;
|
|
|
|
/*
|
|
* When doing error recovery we didn't reap the lport so don't try
|
|
* to reallocate it.
|
|
*/
|
|
retry_probe:
|
|
if (mode == QEDF_MODE_RECOVERY)
|
|
msleep(2000);
|
|
|
|
if (mode != QEDF_MODE_RECOVERY) {
|
|
lport = libfc_host_alloc(&qedf_host_template,
|
|
sizeof(struct qedf_ctx));
|
|
|
|
if (!lport) {
|
|
QEDF_ERR(NULL, "Could not allocate lport.\n");
|
|
rc = -ENOMEM;
|
|
goto err0;
|
|
}
|
|
|
|
fc_disc_init(lport);
|
|
|
|
/* Initialize qedf_ctx */
|
|
qedf = lport_priv(lport);
|
|
set_bit(QEDF_PROBING, &qedf->flags);
|
|
qedf->lport = lport;
|
|
qedf->ctlr.lp = lport;
|
|
qedf->pdev = pdev;
|
|
qedf->dbg_ctx.pdev = pdev;
|
|
qedf->dbg_ctx.host_no = lport->host->host_no;
|
|
spin_lock_init(&qedf->hba_lock);
|
|
INIT_LIST_HEAD(&qedf->fcports);
|
|
qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
|
|
atomic_set(&qedf->num_offloads, 0);
|
|
qedf->stop_io_on_error = false;
|
|
pci_set_drvdata(pdev, qedf);
|
|
init_completion(&qedf->fipvlan_compl);
|
|
mutex_init(&qedf->stats_mutex);
|
|
mutex_init(&qedf->flush_mutex);
|
|
qedf->flogi_pending = 0;
|
|
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
|
|
"QLogic FastLinQ FCoE Module qedf %s, "
|
|
"FW %d.%d.%d.%d\n", QEDF_VERSION,
|
|
FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
|
|
FW_ENGINEERING_VERSION);
|
|
} else {
|
|
/* Init pointers during recovery */
|
|
qedf = pci_get_drvdata(pdev);
|
|
set_bit(QEDF_PROBING, &qedf->flags);
|
|
lport = qedf->lport;
|
|
}
|
|
|
|
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n");
|
|
|
|
host = lport->host;
|
|
|
|
/* Allocate mempool for qedf_io_work structs */
|
|
qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
|
|
qedf_io_work_cache);
|
|
if (qedf->io_mempool == NULL) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
|
|
goto err1;
|
|
}
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
|
|
qedf->io_mempool);
|
|
|
|
sprintf(host_buf, "qedf_%u_link",
|
|
qedf->lport->host->host_no);
|
|
qedf->link_update_wq = create_workqueue(host_buf);
|
|
INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
|
|
INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
|
|
INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
|
|
INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work);
|
|
qedf->fipvlan_retries = qedf_fipvlan_retries;
|
|
/* Set a default prio in case DCBX doesn't converge */
|
|
if (qedf_default_prio > -1) {
|
|
/*
|
|
* This is the case where we pass a modparam in so we want to
|
|
* honor it even if dcbx doesn't converge.
|
|
*/
|
|
qedf->prio = qedf_default_prio;
|
|
} else
|
|
qedf->prio = QEDF_DEFAULT_PRIO;
|
|
|
|
/*
|
|
* Common probe. Takes care of basic hardware init and pci_*
|
|
* functions.
|
|
*/
|
|
memset(&qed_params, 0, sizeof(qed_params));
|
|
qed_params.protocol = QED_PROTOCOL_FCOE;
|
|
qed_params.dp_module = qedf_dp_module;
|
|
qed_params.dp_level = qedf_dp_level;
|
|
qed_params.is_vf = is_vf;
|
|
qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
|
|
if (!qedf->cdev) {
|
|
if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) {
|
|
QEDF_ERR(&qedf->dbg_ctx,
|
|
"Retry %d initialize hardware\n", retry_cnt);
|
|
retry_cnt--;
|
|
goto retry_probe;
|
|
}
|
|
QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n");
|
|
rc = -ENODEV;
|
|
goto err1;
|
|
}
|
|
|
|
/* Learn information crucial for qedf to progress */
|
|
rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
|
|
if (rc) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
|
|
goto err1;
|
|
}
|
|
|
|
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
|
|
"dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
|
|
qedf->dev_info.common.num_hwfns,
|
|
qed_ops->common->get_affin_hwfn_idx(qedf->cdev));
|
|
|
|
/* queue allocation code should come here
|
|
* order should be
|
|
* slowpath_start
|
|
* status block allocation
|
|
* interrupt registration (to get min number of queues)
|
|
* set_fcoe_pf_param
|
|
* qed_sp_fcoe_func_start
|
|
*/
|
|
rc = qedf_set_fcoe_pf_param(qedf);
|
|
if (rc) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
|
|
goto err2;
|
|
}
|
|
qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
|
|
|
|
/* Learn information crucial for qedf to progress */
|
|
rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
|
|
if (rc) {
|
|
QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n");
|
|
goto err2;
|
|
}
|
|
|
|
if (mode != QEDF_MODE_RECOVERY) {
|
|
qedf->devlink = qed_ops->common->devlink_register(qedf->cdev);
|
|
if (IS_ERR(qedf->devlink)) {
|
|
QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n");
|
|
rc = PTR_ERR(qedf->devlink);
|
|
qedf->devlink = NULL;
|
|
goto err2;
|
|
}
|
|
}
|
|
|
|
/* Record BDQ producer doorbell addresses */
|
|
qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
|
|
qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
|
|
qedf->bdq_secondary_prod);
|
|
|
|
qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
|
|
|
|
rc = qedf_prepare_sb(qedf);
|
|
if (rc) {
|
|
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
|
|
goto err2;
|
|
}
|
|
|
|
/* Start the Slowpath-process */
|
|
slowpath_params.int_mode = QED_INT_MODE_MSIX;
|
|
slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
|
|
slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
|
|
slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
|
|
slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
|
|
strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
|
|
rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
|
|
if (rc) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
|
|
goto err2;
|
|
}
|
|
|
|
/*
|
|
* update_pf_params needs to be called before and after slowpath
|
|
* start
|
|
*/
|
|
qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
|
|
|
|
/* Setup interrupts */
|
|
rc = qedf_setup_int(qedf);
|
|
if (rc) {
|
|
QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n");
|
|
goto err3;
|
|
}
|
|
|
|
rc = qed_ops->start(qedf->cdev, &qedf->tasks);
|
|
if (rc) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
|
|
goto err4;
|
|
}
|
|
task_start = qedf_get_task_mem(&qedf->tasks, 0);
|
|
task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
|
|
"end=%p block_size=%u.\n", task_start, task_end,
|
|
qedf->tasks.size);
|
|
|
|
/*
|
|
* We need to write the number of BDs in the BDQ we've preallocated so
|
|
* the f/w will do a prefetch and we'll get an unsolicited CQE when a
|
|
* packet arrives.
|
|
*/
|
|
qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"Writing %d to primary and secondary BDQ doorbell registers.\n",
|
|
qedf->bdq_prod_idx);
|
|
writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
|
|
readw(qedf->bdq_primary_prod);
|
|
writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
|
|
readw(qedf->bdq_secondary_prod);
|
|
|
|
qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
|
|
|
|
/* Now that the dev_info struct has been filled in set the MAC
|
|
* address
|
|
*/
|
|
ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
|
|
qedf->mac);
|
|
|
|
/*
|
|
* Set the WWNN and WWPN in the following way:
|
|
*
|
|
* If the info we get from qed is non-zero then use that to set the
|
|
* WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
|
|
* on the MAC address.
|
|
*/
|
|
if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"Setting WWPN and WWNN from qed dev_info.\n");
|
|
qedf->wwnn = qedf->dev_info.wwnn;
|
|
qedf->wwpn = qedf->dev_info.wwpn;
|
|
} else {
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
|
|
qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
|
|
qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
|
|
}
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx "
|
|
"WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
|
|
|
|
sprintf(host_buf, "host_%d", host->host_no);
|
|
qed_ops->common->set_name(qedf->cdev, host_buf);
|
|
|
|
/* Allocate cmd mgr */
|
|
qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
|
|
if (!qedf->cmd_mgr) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
|
|
rc = -ENOMEM;
|
|
goto err5;
|
|
}
|
|
|
|
if (mode != QEDF_MODE_RECOVERY) {
|
|
host->transportt = qedf_fc_transport_template;
|
|
host->max_lun = qedf_max_lun;
|
|
host->max_cmd_len = QEDF_MAX_CDB_LEN;
|
|
host->max_id = QEDF_MAX_SESSIONS;
|
|
host->can_queue = FCOE_PARAMS_NUM_TASKS;
|
|
rc = scsi_add_host(host, &pdev->dev);
|
|
if (rc) {
|
|
QEDF_WARN(&qedf->dbg_ctx,
|
|
"Error adding Scsi_Host rc=0x%x.\n", rc);
|
|
goto err6;
|
|
}
|
|
}
|
|
|
|
memset(¶ms, 0, sizeof(params));
|
|
params.mtu = QEDF_LL2_BUF_SIZE;
|
|
ether_addr_copy(params.ll2_mac_address, qedf->mac);
|
|
|
|
/* Start LL2 processing thread */
|
|
snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
|
|
qedf->ll2_recv_wq =
|
|
create_workqueue(host_buf);
|
|
if (!qedf->ll2_recv_wq) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
|
|
rc = -ENOMEM;
|
|
goto err7;
|
|
}
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
|
|
qedf_dbg_fops);
|
|
#endif
|
|
|
|
/* Start LL2 */
|
|
qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
|
|
rc = qed_ops->ll2->start(qedf->cdev, ¶ms);
|
|
if (rc) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
|
|
goto err7;
|
|
}
|
|
set_bit(QEDF_LL2_STARTED, &qedf->flags);
|
|
|
|
/* Set initial FIP/FCoE VLAN to NULL */
|
|
qedf->vlan_id = 0;
|
|
|
|
/*
|
|
* No need to setup fcoe_ctlr or fc_lport objects during recovery since
|
|
* they were not reaped during the unload process.
|
|
*/
|
|
if (mode != QEDF_MODE_RECOVERY) {
|
|
/* Setup imbedded fcoe controller */
|
|
qedf_fcoe_ctlr_setup(qedf);
|
|
|
|
/* Setup lport */
|
|
rc = qedf_lport_setup(qedf);
|
|
if (rc) {
|
|
QEDF_ERR(&(qedf->dbg_ctx),
|
|
"qedf_lport_setup failed.\n");
|
|
goto err7;
|
|
}
|
|
}
|
|
|
|
sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
|
|
qedf->timer_work_queue =
|
|
create_workqueue(host_buf);
|
|
if (!qedf->timer_work_queue) {
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
|
|
"workqueue.\n");
|
|
rc = -ENOMEM;
|
|
goto err7;
|
|
}
|
|
|
|
/* DPC workqueue is not reaped during recovery unload */
|
|
if (mode != QEDF_MODE_RECOVERY) {
|
|
sprintf(host_buf, "qedf_%u_dpc",
|
|
qedf->lport->host->host_no);
|
|
qedf->dpc_wq = create_workqueue(host_buf);
|
|
}
|
|
INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler);
|
|
|
|
/*
|
|
* GRC dump and sysfs parameters are not reaped during the recovery
|
|
* unload process.
|
|
*/
|
|
if (mode != QEDF_MODE_RECOVERY) {
|
|
qedf->grcdump_size =
|
|
qed_ops->common->dbg_all_data_size(qedf->cdev);
|
|
if (qedf->grcdump_size) {
|
|
rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
|
|
qedf->grcdump_size);
|
|
if (rc) {
|
|
QEDF_ERR(&(qedf->dbg_ctx),
|
|
"GRC Dump buffer alloc failed.\n");
|
|
qedf->grcdump = NULL;
|
|
}
|
|
|
|
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
|
|
"grcdump: addr=%p, size=%u.\n",
|
|
qedf->grcdump, qedf->grcdump_size);
|
|
}
|
|
qedf_create_sysfs_ctx_attr(qedf);
|
|
|
|
/* Initialize I/O tracing for this adapter */
|
|
spin_lock_init(&qedf->io_trace_lock);
|
|
qedf->io_trace_idx = 0;
|
|
}
|
|
|
|
init_completion(&qedf->flogi_compl);
|
|
|
|
status = qed_ops->common->update_drv_state(qedf->cdev, true);
|
|
if (status)
|
|
QEDF_ERR(&(qedf->dbg_ctx),
|
|
"Failed to send drv state to MFW.\n");
|
|
|
|
memset(&link_params, 0, sizeof(struct qed_link_params));
|
|
link_params.link_up = true;
|
|
status = qed_ops->common->set_link(qedf->cdev, &link_params);
|
|
if (status)
|
|
QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
|
|
|
|
/* Start/restart discovery */
|
|
if (mode == QEDF_MODE_RECOVERY)
|
|
fcoe_ctlr_link_up(&qedf->ctlr);
|
|
else
|
|
fc_fabric_login(lport);
|
|
|
|
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n");
|
|
|
|
clear_bit(QEDF_PROBING, &qedf->flags);
|
|
|
|
/* All good */
|
|
return 0;
|
|
|
|
err7:
|
|
if (qedf->ll2_recv_wq)
|
|
destroy_workqueue(qedf->ll2_recv_wq);
|
|
fc_remove_host(qedf->lport->host);
|
|
scsi_remove_host(qedf->lport->host);
|
|
#ifdef CONFIG_DEBUG_FS
|
|
qedf_dbg_host_exit(&(qedf->dbg_ctx));
|
|
#endif
|
|
err6:
|
|
qedf_cmd_mgr_free(qedf->cmd_mgr);
|
|
err5:
|
|
qed_ops->stop(qedf->cdev);
|
|
err4:
|
|
qedf_free_fcoe_pf_param(qedf);
|
|
qedf_sync_free_irqs(qedf);
|
|
err3:
|
|
qed_ops->common->slowpath_stop(qedf->cdev);
|
|
err2:
|
|
qed_ops->common->remove(qedf->cdev);
|
|
err1:
|
|
scsi_host_put(lport->host);
|
|
err0:
|
|
if (qedf) {
|
|
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n");
|
|
|
|
clear_bit(QEDF_PROBING, &qedf->flags);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
|
{
|
|
return __qedf_probe(pdev, QEDF_MODE_NORMAL);
|
|
}
|
|
|
|
static void __qedf_remove(struct pci_dev *pdev, int mode)
|
|
{
|
|
struct qedf_ctx *qedf;
|
|
int rc;
|
|
|
|
if (!pdev) {
|
|
QEDF_ERR(NULL, "pdev is NULL.\n");
|
|
return;
|
|
}
|
|
|
|
qedf = pci_get_drvdata(pdev);
|
|
|
|
/*
|
|
* Prevent race where we're in board disable work and then try to
|
|
* rmmod the module.
|
|
*/
|
|
if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
|
|
QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
|
|
return;
|
|
}
|
|
|
|
if (mode != QEDF_MODE_RECOVERY)
|
|
set_bit(QEDF_UNLOADING, &qedf->flags);
|
|
|
|
/* Logoff the fabric to upload all connections */
|
|
if (mode == QEDF_MODE_RECOVERY)
|
|
fcoe_ctlr_link_down(&qedf->ctlr);
|
|
else
|
|
fc_fabric_logoff(qedf->lport);
|
|
|
|
if (!qedf_wait_for_upload(qedf))
|
|
QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
qedf_dbg_host_exit(&(qedf->dbg_ctx));
|
|
#endif
|
|
|
|
/* Stop any link update handling */
|
|
cancel_delayed_work_sync(&qedf->link_update);
|
|
destroy_workqueue(qedf->link_update_wq);
|
|
qedf->link_update_wq = NULL;
|
|
|
|
if (qedf->timer_work_queue)
|
|
destroy_workqueue(qedf->timer_work_queue);
|
|
|
|
/* Stop Light L2 */
|
|
clear_bit(QEDF_LL2_STARTED, &qedf->flags);
|
|
qed_ops->ll2->stop(qedf->cdev);
|
|
if (qedf->ll2_recv_wq)
|
|
destroy_workqueue(qedf->ll2_recv_wq);
|
|
|
|
/* Stop fastpath */
|
|
qedf_sync_free_irqs(qedf);
|
|
qedf_destroy_sb(qedf);
|
|
|
|
/*
|
|
* During recovery don't destroy OS constructs that represent the
|
|
* physical port.
|
|
*/
|
|
if (mode != QEDF_MODE_RECOVERY) {
|
|
qedf_free_grc_dump_buf(&qedf->grcdump);
|
|
qedf_remove_sysfs_ctx_attr(qedf);
|
|
|
|
/* Remove all SCSI/libfc/libfcoe structures */
|
|
fcoe_ctlr_destroy(&qedf->ctlr);
|
|
fc_lport_destroy(qedf->lport);
|
|
fc_remove_host(qedf->lport->host);
|
|
scsi_remove_host(qedf->lport->host);
|
|
}
|
|
|
|
qedf_cmd_mgr_free(qedf->cmd_mgr);
|
|
|
|
if (mode != QEDF_MODE_RECOVERY) {
|
|
fc_exch_mgr_free(qedf->lport);
|
|
fc_lport_free_stats(qedf->lport);
|
|
|
|
/* Wait for all vports to be reaped */
|
|
qedf_wait_for_vport_destroy(qedf);
|
|
}
|
|
|
|
/*
|
|
* Now that all connections have been uploaded we can stop the
|
|
* rest of the qed operations
|
|
*/
|
|
qed_ops->stop(qedf->cdev);
|
|
|
|
if (mode != QEDF_MODE_RECOVERY) {
|
|
if (qedf->dpc_wq) {
|
|
/* Stop general DPC handling */
|
|
destroy_workqueue(qedf->dpc_wq);
|
|
qedf->dpc_wq = NULL;
|
|
}
|
|
}
|
|
|
|
/* Final shutdown for the board */
|
|
qedf_free_fcoe_pf_param(qedf);
|
|
if (mode != QEDF_MODE_RECOVERY) {
|
|
qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
|
|
pci_set_drvdata(pdev, NULL);
|
|
}
|
|
|
|
rc = qed_ops->common->update_drv_state(qedf->cdev, false);
|
|
if (rc)
|
|
QEDF_ERR(&(qedf->dbg_ctx),
|
|
"Failed to send drv state to MFW.\n");
|
|
|
|
if (mode != QEDF_MODE_RECOVERY && qedf->devlink) {
|
|
qed_ops->common->devlink_unregister(qedf->devlink);
|
|
qedf->devlink = NULL;
|
|
}
|
|
|
|
qed_ops->common->slowpath_stop(qedf->cdev);
|
|
qed_ops->common->remove(qedf->cdev);
|
|
|
|
mempool_destroy(qedf->io_mempool);
|
|
|
|
/* Only reap the Scsi_host on a real removal */
|
|
if (mode != QEDF_MODE_RECOVERY)
|
|
scsi_host_put(qedf->lport->host);
|
|
}
|
|
|
|
static void qedf_remove(struct pci_dev *pdev)
|
|
{
|
|
/* Check to make sure this function wasn't already disabled */
|
|
if (!atomic_read(&pdev->enable_cnt))
|
|
return;
|
|
|
|
__qedf_remove(pdev, QEDF_MODE_NORMAL);
|
|
}
|
|
|
|
void qedf_wq_grcdump(struct work_struct *work)
|
|
{
|
|
struct qedf_ctx *qedf =
|
|
container_of(work, struct qedf_ctx, grcdump_work.work);
|
|
|
|
QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
|
|
qedf_capture_grc_dump(qedf);
|
|
}
|
|
|
|
void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type)
|
|
{
|
|
struct qedf_ctx *qedf = dev;
|
|
|
|
QEDF_ERR(&(qedf->dbg_ctx),
|
|
"Hardware error handler scheduled, event=%d.\n",
|
|
err_type);
|
|
|
|
if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) {
|
|
QEDF_ERR(&(qedf->dbg_ctx),
|
|
"Already in recovery, not scheduling board disable work.\n");
|
|
return;
|
|
}
|
|
|
|
switch (err_type) {
|
|
case QED_HW_ERR_FAN_FAIL:
|
|
schedule_delayed_work(&qedf->board_disable_work, 0);
|
|
break;
|
|
case QED_HW_ERR_MFW_RESP_FAIL:
|
|
case QED_HW_ERR_HW_ATTN:
|
|
case QED_HW_ERR_DMAE_FAIL:
|
|
case QED_HW_ERR_FW_ASSERT:
|
|
/* Prevent HW attentions from being reasserted */
|
|
qed_ops->common->attn_clr_enable(qedf->cdev, true);
|
|
break;
|
|
case QED_HW_ERR_RAMROD_FAIL:
|
|
/* Prevent HW attentions from being reasserted */
|
|
qed_ops->common->attn_clr_enable(qedf->cdev, true);
|
|
|
|
if (qedf_enable_recovery && qedf->devlink)
|
|
qed_ops->common->report_fatal_error(qedf->devlink,
|
|
err_type);
|
|
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Protocol TLV handler
|
|
*/
|
|
void qedf_get_protocol_tlv_data(void *dev, void *data)
|
|
{
|
|
struct qedf_ctx *qedf = dev;
|
|
struct qed_mfw_tlv_fcoe *fcoe = data;
|
|
struct fc_lport *lport;
|
|
struct Scsi_Host *host;
|
|
struct fc_host_attrs *fc_host;
|
|
struct fc_host_statistics *hst;
|
|
|
|
if (!qedf) {
|
|
QEDF_ERR(NULL, "qedf is null.\n");
|
|
return;
|
|
}
|
|
|
|
if (test_bit(QEDF_PROBING, &qedf->flags)) {
|
|
QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n");
|
|
return;
|
|
}
|
|
|
|
lport = qedf->lport;
|
|
host = lport->host;
|
|
fc_host = shost_to_fc_host(host);
|
|
|
|
/* Force a refresh of the fc_host stats including offload stats */
|
|
hst = qedf_fc_get_host_stats(host);
|
|
|
|
fcoe->qos_pri_set = true;
|
|
fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
|
|
|
|
fcoe->ra_tov_set = true;
|
|
fcoe->ra_tov = lport->r_a_tov;
|
|
|
|
fcoe->ed_tov_set = true;
|
|
fcoe->ed_tov = lport->e_d_tov;
|
|
|
|
fcoe->npiv_state_set = true;
|
|
fcoe->npiv_state = 1; /* NPIV always enabled */
|
|
|
|
fcoe->num_npiv_ids_set = true;
|
|
fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
|
|
|
|
/* Certain attributes we only want to set if we've selected an FCF */
|
|
if (qedf->ctlr.sel_fcf) {
|
|
fcoe->switch_name_set = true;
|
|
u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
|
|
}
|
|
|
|
fcoe->port_state_set = true;
|
|
/* For qedf we're either link down or fabric attach */
|
|
if (lport->link_up)
|
|
fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
|
|
else
|
|
fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
|
|
|
|
fcoe->link_failures_set = true;
|
|
fcoe->link_failures = (u16)hst->link_failure_count;
|
|
|
|
fcoe->fcoe_txq_depth_set = true;
|
|
fcoe->fcoe_rxq_depth_set = true;
|
|
fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
|
|
fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
|
|
|
|
fcoe->fcoe_rx_frames_set = true;
|
|
fcoe->fcoe_rx_frames = hst->rx_frames;
|
|
|
|
fcoe->fcoe_tx_frames_set = true;
|
|
fcoe->fcoe_tx_frames = hst->tx_frames;
|
|
|
|
fcoe->fcoe_rx_bytes_set = true;
|
|
fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
|
|
|
|
fcoe->fcoe_tx_bytes_set = true;
|
|
fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
|
|
|
|
fcoe->crc_count_set = true;
|
|
fcoe->crc_count = hst->invalid_crc_count;
|
|
|
|
fcoe->tx_abts_set = true;
|
|
fcoe->tx_abts = hst->fcp_packet_aborts;
|
|
|
|
fcoe->tx_lun_rst_set = true;
|
|
fcoe->tx_lun_rst = qedf->lun_resets;
|
|
|
|
fcoe->abort_task_sets_set = true;
|
|
fcoe->abort_task_sets = qedf->packet_aborts;
|
|
|
|
fcoe->scsi_busy_set = true;
|
|
fcoe->scsi_busy = qedf->busy;
|
|
|
|
fcoe->scsi_tsk_full_set = true;
|
|
fcoe->scsi_tsk_full = qedf->task_set_fulls;
|
|
}
|
|
|
|
/* Deferred work function to perform soft context reset on STAG change */
|
|
void qedf_stag_change_work(struct work_struct *work)
|
|
{
|
|
struct qedf_ctx *qedf =
|
|
container_of(work, struct qedf_ctx, stag_work.work);
|
|
|
|
printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.",
|
|
dev_name(&qedf->pdev->dev), __func__, __LINE__,
|
|
qedf->dbg_ctx.host_no);
|
|
qedf_ctx_soft_reset(qedf->lport);
|
|
}
|
|
|
|
static void qedf_shutdown(struct pci_dev *pdev)
|
|
{
|
|
__qedf_remove(pdev, QEDF_MODE_NORMAL);
|
|
}
|
|
|
|
/*
|
|
* Recovery handler code
|
|
*/
|
|
static void qedf_schedule_recovery_handler(void *dev)
|
|
{
|
|
struct qedf_ctx *qedf = dev;
|
|
|
|
QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n");
|
|
schedule_delayed_work(&qedf->recovery_work, 0);
|
|
}
|
|
|
|
static void qedf_recovery_handler(struct work_struct *work)
|
|
{
|
|
struct qedf_ctx *qedf =
|
|
container_of(work, struct qedf_ctx, recovery_work.work);
|
|
|
|
if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags))
|
|
return;
|
|
|
|
/*
|
|
* Call common_ops->recovery_prolog to allow the MFW to quiesce
|
|
* any PCI transactions.
|
|
*/
|
|
qed_ops->common->recovery_prolog(qedf->cdev);
|
|
|
|
QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n");
|
|
__qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY);
|
|
/*
|
|
* Reset link and dcbx to down state since we will not get a link down
|
|
* event from the MFW but calling __qedf_remove will essentially be a
|
|
* link down event.
|
|
*/
|
|
atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
|
|
atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
|
|
__qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY);
|
|
clear_bit(QEDF_IN_RECOVERY, &qedf->flags);
|
|
QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n");
|
|
}
|
|
|
|
/* Generic TLV data callback */
|
|
void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
|
|
{
|
|
struct qedf_ctx *qedf;
|
|
|
|
if (!dev) {
|
|
QEDF_INFO(NULL, QEDF_LOG_EVT,
|
|
"dev is NULL so ignoring get_generic_tlv_data request.\n");
|
|
return;
|
|
}
|
|
qedf = (struct qedf_ctx *)dev;
|
|
|
|
memset(data, 0, sizeof(struct qed_generic_tlvs));
|
|
ether_addr_copy(data->mac[0], qedf->mac);
|
|
}
|
|
|
|
/*
|
|
* Module Init/Remove
|
|
*/
|
|
|
|
static int __init qedf_init(void)
|
|
{
|
|
int ret;
|
|
|
|
/* If debug=1 passed, set the default log mask */
|
|
if (qedf_debug == QEDF_LOG_DEFAULT)
|
|
qedf_debug = QEDF_DEFAULT_LOG_MASK;
|
|
|
|
/*
|
|
* Check that default prio for FIP/FCoE traffic is between 0..7 if a
|
|
* value has been set
|
|
*/
|
|
if (qedf_default_prio > -1)
|
|
if (qedf_default_prio > 7) {
|
|
qedf_default_prio = QEDF_DEFAULT_PRIO;
|
|
QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
|
|
QEDF_DEFAULT_PRIO);
|
|
}
|
|
|
|
/* Print driver banner */
|
|
QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
|
|
QEDF_VERSION);
|
|
|
|
/* Create kmem_cache for qedf_io_work structs */
|
|
qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
|
|
sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
|
|
if (qedf_io_work_cache == NULL) {
|
|
QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
|
|
goto err1;
|
|
}
|
|
QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
|
|
qedf_io_work_cache);
|
|
|
|
qed_ops = qed_get_fcoe_ops();
|
|
if (!qed_ops) {
|
|
QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
|
|
goto err1;
|
|
}
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
qedf_dbg_init("qedf");
|
|
#endif
|
|
|
|
qedf_fc_transport_template =
|
|
fc_attach_transport(&qedf_fc_transport_fn);
|
|
if (!qedf_fc_transport_template) {
|
|
QEDF_ERR(NULL, "Could not register with FC transport\n");
|
|
goto err2;
|
|
}
|
|
|
|
qedf_fc_vport_transport_template =
|
|
fc_attach_transport(&qedf_fc_vport_transport_fn);
|
|
if (!qedf_fc_vport_transport_template) {
|
|
QEDF_ERR(NULL, "Could not register vport template with FC "
|
|
"transport\n");
|
|
goto err3;
|
|
}
|
|
|
|
qedf_io_wq = create_workqueue("qedf_io_wq");
|
|
if (!qedf_io_wq) {
|
|
QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
|
|
goto err4;
|
|
}
|
|
|
|
qedf_cb_ops.get_login_failures = qedf_get_login_failures;
|
|
|
|
ret = pci_register_driver(&qedf_pci_driver);
|
|
if (ret) {
|
|
QEDF_ERR(NULL, "Failed to register driver\n");
|
|
goto err5;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err5:
|
|
destroy_workqueue(qedf_io_wq);
|
|
err4:
|
|
fc_release_transport(qedf_fc_vport_transport_template);
|
|
err3:
|
|
fc_release_transport(qedf_fc_transport_template);
|
|
err2:
|
|
#ifdef CONFIG_DEBUG_FS
|
|
qedf_dbg_exit();
|
|
#endif
|
|
qed_put_fcoe_ops();
|
|
err1:
|
|
return -EINVAL;
|
|
}
|
|
|
|
static void __exit qedf_cleanup(void)
|
|
{
|
|
pci_unregister_driver(&qedf_pci_driver);
|
|
|
|
destroy_workqueue(qedf_io_wq);
|
|
|
|
fc_release_transport(qedf_fc_vport_transport_template);
|
|
fc_release_transport(qedf_fc_transport_template);
|
|
#ifdef CONFIG_DEBUG_FS
|
|
qedf_dbg_exit();
|
|
#endif
|
|
qed_put_fcoe_ops();
|
|
|
|
kmem_cache_destroy(qedf_io_work_cache);
|
|
}
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module");
|
|
MODULE_AUTHOR("QLogic Corporation");
|
|
MODULE_VERSION(QEDF_VERSION);
|
|
module_init(qedf_init);
|
|
module_exit(qedf_cleanup);
|