| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * QLogic FCoE Offload Driver |
| * Copyright (c) 2016-2018 Cavium Inc. |
| */ |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/pci.h> |
| #include <linux/device.h> |
| #include <linux/highmem.h> |
| #include <linux/crc32.h> |
| #include <linux/interrupt.h> |
| #include <linux/list.h> |
| #include <linux/kthread.h> |
| #include <linux/phylink.h> |
| #include <scsi/libfc.h> |
| #include <scsi/scsi_host.h> |
| #include <scsi/fc_frame.h> |
| #include <linux/if_ether.h> |
| #include <linux/if_vlan.h> |
| #include <linux/cpu.h> |
| #include "qedf.h" |
| #include "qedf_dbg.h" |
| #include <uapi/linux/pci_regs.h> |
| |
| const struct qed_fcoe_ops *qed_ops; |
| |
| static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id); |
| static void qedf_remove(struct pci_dev *pdev); |
| static void qedf_shutdown(struct pci_dev *pdev); |
| static void qedf_schedule_recovery_handler(void *dev); |
| static void qedf_recovery_handler(struct work_struct *work); |
| |
| /* |
| * Driver module parameters. |
| */ |
| static unsigned int qedf_dev_loss_tmo = 60; |
| module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO); |
| MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached " |
| "remote ports (default 60)"); |
| |
| uint qedf_debug = QEDF_LOG_INFO; |
| module_param_named(debug, qedf_debug, uint, S_IRUGO); |
| MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging" |
| " mask"); |
| |
| static uint qedf_fipvlan_retries = 60; |
| module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO); |
| MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt " |
| "before giving up (default 60)"); |
| |
| static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN; |
| module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO); |
| MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails " |
| "(default 1002)."); |
| |
| static int qedf_default_prio = -1; |
| module_param_named(default_prio, qedf_default_prio, int, S_IRUGO); |
| MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE" |
| " traffic (value between 0 and 7, default 3)."); |
| |
| uint qedf_dump_frames; |
| module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames " |
| "(default off)"); |
| |
| static uint qedf_queue_depth; |
| module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO); |
| MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered " |
| "by the qedf driver. Default is 0 (use OS default)."); |
| |
| uint qedf_io_tracing; |
| module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions " |
| "into trace buffer. (default off)."); |
| |
| static uint qedf_max_lun = MAX_FIBRE_LUNS; |
| module_param_named(max_lun, qedf_max_lun, int, S_IRUGO); |
| MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver " |
| "supports. (default 0xffffffff)"); |
| |
| uint qedf_link_down_tmo; |
| module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO); |
| MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the " |
| "link is down by N seconds."); |
| |
| bool qedf_retry_delay; |
| module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry " |
| "delay handling (default off)."); |
| |
| static bool qedf_dcbx_no_wait; |
| module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start " |
| "sending FIP VLAN requests on link up (Default: off)."); |
| |
| static uint qedf_dp_module; |
| module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO); |
| MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed " |
| "qed module during probe."); |
| |
| static uint qedf_dp_level = QED_LEVEL_NOTICE; |
| module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO); |
| MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module " |
| "during probe (0-3: 0 more verbose)."); |
| |
| struct workqueue_struct *qedf_io_wq; |
| |
| static struct fcoe_percpu_s qedf_global; |
| static DEFINE_SPINLOCK(qedf_global_lock); |
| |
| static struct kmem_cache *qedf_io_work_cache; |
| |
| void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id) |
| { |
| int vlan_id_tmp = 0; |
| |
| vlan_id_tmp = vlan_id | (qedf->prio << VLAN_PRIO_SHIFT); |
| qedf->vlan_id = vlan_id_tmp; |
| QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, |
| "Setting vlan_id=0x%04x prio=%d.\n", |
| vlan_id_tmp, qedf->prio); |
| } |
| |
| /* Returns true if we have a valid vlan, false otherwise */ |
| static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) |
| { |
| |
| while (qedf->fipvlan_retries--) { |
| /* This is to catch if link goes down during fipvlan retries */ |
| if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { |
| QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n"); |
| return false; |
| } |
| |
| if (test_bit(QEDF_UNLOADING, &qedf->flags)) { |
| QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n"); |
| return false; |
| } |
| |
| if (qedf->vlan_id > 0) { |
| QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, |
| "vlan = 0x%x already set, calling ctlr_link_up.\n", |
| qedf->vlan_id); |
| if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) |
| fcoe_ctlr_link_up(&qedf->ctlr); |
| return true; |
| } |
| |
| QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
| "Retry %d.\n", qedf->fipvlan_retries); |
| init_completion(&qedf->fipvlan_compl); |
| qedf_fcoe_send_vlan_req(qedf); |
| wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ); |
| } |
| |
| return false; |
| } |
| |
| static void qedf_handle_link_update(struct work_struct *work) |
| { |
| struct qedf_ctx *qedf = |
| container_of(work, struct qedf_ctx, link_update.work); |
| int rc; |
| |
| QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n", |
| atomic_read(&qedf->link_state)); |
| |
| if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { |
| rc = qedf_initiate_fipvlan_req(qedf); |
| if (rc) |
| return; |
| |
| if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { |
| QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, |
| "Link is down, resetting vlan_id.\n"); |
| qedf->vlan_id = 0; |
| return; |
| } |
| |
| /* |
| * If we get here then we never received a repsonse to our |
| * fip vlan request so set the vlan_id to the default and |
| * tell FCoE that the link is up |
| */ |
| QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN " |
| "response, falling back to default VLAN %d.\n", |
| qedf_fallback_vlan); |
| qedf_set_vlan_id(qedf, qedf_fallback_vlan); |
| |
| /* |
| * Zero out data_src_addr so we'll update it with the new |
| * lport port_id |
| */ |
| eth_zero_addr(qedf->data_src_addr); |
| fcoe_ctlr_link_up(&qedf->ctlr); |
| } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { |
| /* |
| * If we hit here and link_down_tmo_valid is still 1 it means |
| * that link_down_tmo timed out so set it to 0 to make sure any |
| * other readers have accurate state. |
| */ |
| atomic_set(&qedf->link_down_tmo_valid, 0); |
| QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
| "Calling fcoe_ctlr_link_down().\n"); |
| fcoe_ctlr_link_down(&qedf->ctlr); |
| if (qedf_wait_for_upload(qedf) == false) |
| QEDF_ERR(&qedf->dbg_ctx, |
| "Could not upload all sessions.\n"); |
| /* Reset the number of FIP VLAN retries */ |
| qedf->fipvlan_retries = qedf_fipvlan_retries; |
| } |
| } |
| |
| #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1 |
| #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2 |
| #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3 |
| static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp) |
| { |
| u8 *granted_mac; |
| struct fc_frame_header *fh = fc_frame_header_get(fp); |
| u8 fc_map[3]; |
| int method = 0; |
| |
| /* Get granted MAC address from FIP FLOGI payload */ |
| granted_mac = fr_cb(fp)->granted_mac; |
| |
| /* |
| * We set the source MAC for FCoE traffic based on the Granted MAC |
| * address from the switch. |
| * |
| * If granted_mac is non-zero, we used that. |
| * If the granted_mac is zeroed out, created the FCoE MAC based on |
| * the sel_fcf->fc_map and the d_id fo the FLOGI frame. |
| * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the |
| * d_id of the FLOGI frame. |
| */ |
| if (!is_zero_ether_addr(granted_mac)) { |
| ether_addr_copy(qedf->data_src_addr, granted_mac); |
| method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC; |
| } else if (qedf->ctlr.sel_fcf->fc_map != 0) { |
| hton24(fc_map, qedf->ctlr.sel_fcf->fc_map); |
| qedf->data_src_addr[0] = fc_map[0]; |
| qedf->data_src_addr[1] = fc_map[1]; |
| qedf->data_src_addr[2] = fc_map[2]; |
| qedf->data_src_addr[3] = fh->fh_d_id[0]; |
| qedf->data_src_addr[4] = fh->fh_d_id[1]; |
| qedf->data_src_addr[5] = fh->fh_d_id[2]; |
| method = QEDF_FCOE_MAC_METHOD_FCF_MAP; |
| } else { |
| fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id); |
| method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC; |
| } |
| |
| QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
| "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method); |
| } |
| |
| static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, |
| void *arg) |
| { |
| struct fc_exch *exch = fc_seq_exch(seq); |
| struct fc_lport *lport = exch->lp; |
| struct qedf_ctx *qedf = lport_priv(lport); |
| |
| if (!qedf) { |
| QEDF_ERR(NULL, "qedf is NULL.\n"); |
| return; |
| } |
| |
| /* |
| * If ERR_PTR is set then don't try to stat anything as it will cause |
| * a crash when we access fp. |
| */ |
| if (IS_ERR(fp)) { |
| QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, |
| "fp has IS_ERR() set.\n"); |
| goto skip_stat; |
| } |
| |
| /* Log stats for FLOGI reject */ |
| if (fc_frame_payload_op(fp) == ELS_LS_RJT) |
| qedf->flogi_failed++; |
| else if (fc_frame_payload_op(fp) == ELS_LS_ACC) { |
| /* Set the source MAC we will use for FCoE traffic */ |
| qedf_set_data_src_addr(qedf, fp); |
| qedf->flogi_pending = 0; |
| } |
| |
| /* Complete flogi_compl so we can proceed to sending ADISCs */ |
| complete(&qedf->flogi_compl); |
| |
| skip_stat: |
| /* Report response to libfc */ |
| fc_lport_flogi_resp(seq, fp, lport); |
| } |
| |
| static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did, |
| struct fc_frame *fp, unsigned int op, |
| void (*resp)(struct fc_seq *, |
| struct fc_frame *, |
| void *), |
| void *arg, u32 timeout) |
| { |
| struct qedf_ctx *qedf = lport_priv(lport); |
| |
| /* |
| * Intercept FLOGI for statistic purposes. Note we use the resp |
| * callback to tell if this is really a flogi. |
| */ |
| if (resp == fc_lport_flogi_resp) { |
| qedf->flogi_cnt++; |
| if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) { |
| schedule_delayed_work(&qedf->stag_work, 2); |
| return NULL; |
| } |
| qedf->flogi_pending++; |
| return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp, |
| arg, timeout); |
| } |
| |
| return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); |
| } |
| |
| int qedf_send_flogi(struct qedf_ctx *qedf) |
| { |
| struct fc_lport *lport; |
| struct fc_frame *fp; |
| |
| lport = qedf->lport; |
| |
| if (!lport->tt.elsct_send) { |
| QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n"); |
| return -EINVAL; |
| } |
| |
| fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); |
| if (!fp) { |
| QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n"); |
| return -ENOMEM; |
| } |
| |
| QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, |
| "Sending FLOGI to reestablish session with switch.\n"); |
| lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, |
| ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov); |
| |
| init_completion(&qedf->flogi_compl); |
| |
| return 0; |
| } |
| |
| /* |
| * This function is called if link_down_tmo is in use. If we get a link up and |
| * link_down_tmo has not expired then use just FLOGI/ADISC to recover our |
| * sessions with targets. Otherwise, just call fcoe_ctlr_link_up(). |
| */ |
| static void qedf_link_recovery(struct work_struct *work) |
| { |
| struct qedf_ctx *qedf = |
| container_of(work, struct qedf_ctx, link_recovery.work); |
| struct fc_lport *lport = qedf->lport; |
| struct fc_rport_priv *rdata; |
| bool rc; |
| int retries = 30; |
| int rval, i; |
| struct list_head rdata_login_list; |
| |
| INIT_LIST_HEAD(&rdata_login_list); |
| |
| QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
| "Link down tmo did not expire.\n"); |
| |
| /* |
| * Essentially reset the fcoe_ctlr here without affecting the state |
| * of the libfc structs. |
| */ |
| qedf->ctlr.state = FIP_ST_LINK_WAIT; |
| fcoe_ctlr_link_down(&qedf->ctlr); |
| |
| /* |
| * Bring the link up before we send the fipvlan request so libfcoe |
| * can select a new fcf in parallel |
| */ |
| fcoe_ctlr_link_up(&qedf->ctlr); |
| |
| /* Since the link when down and up to verify which vlan we're on */ |
| qedf->fipvlan_retries = qedf_fipvlan_retries; |
| rc = qedf_initiate_fipvlan_req(qedf); |
| /* If getting the VLAN fails, set the VLAN to the fallback one */ |
| if (!rc) |
| qedf_set_vlan_id(qedf, qedf_fallback_vlan); |
| |
| /* |
| * We need to wait for an FCF to be selected due to the |
| * fcoe_ctlr_link_up other the FLOGI will be rejected. |
| */ |
| while (retries > 0) { |
| 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; |
| |
| 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, |
| } |
| }; |
| |
| /* |
| * 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 = 1; |
| 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) { |
| QEDF_ERR(NULL, "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_attrs = qedf_host_attrs, |
| .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 / 20; |
| 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); |
| |
| 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 (!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; |
| struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host); |
| u64 dsn; |
| |
| /* |
| * 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 */ |
| dsn = pci_get_dsn(qedf->pdev); |
| if (dsn) |
| snprintf(fc_host->serial_number, |
| sizeof(fc_host->serial_number), "%016llX", dsn); |
| else |
| snprintf(fc_host->serial_number, |
| sizeof(fc_host->serial_number), "Unknown"); |
| |
| snprintf(fc_host->manufacturer, |
| sizeof(fc_host->manufacturer), "%s", "Cavium Inc."); |
| |
| snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000"); |
| |
| snprintf(fc_host->model_description, sizeof(fc_host->model_description), |
| "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller" |
| "(FCoE)"); |
| |
| snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version), |
| "Rev %d", qedf->pdev->revision); |
| |
| snprintf(fc_host->driver_version, sizeof(fc_host->driver_version), |
| "%s", QEDF_VERSION); |
| |
| snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version), |
| "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION, |
| FW_REVISION_VERSION, FW_ENGINEERING_VERSION); |
| } |
| |
| 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 */ |
| snprintf(fc_host_symbolic_name(lport->host), 256, |
| "QLogic %s v%s", QEDF_MODULE_NAME, 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); |
| goto err1; |
| } |
| |
| 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"); |
| rc = -EIO; |
| goto err1; |
| } |
| |
| 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"); |
| rc = -ENOMEM; |
| goto err1; |
| } |
| |
| 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); |
| |
| 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 err2; |
| } |
| |
| 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; |
| |
| 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 err2; |
| } |
| |
| /* 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; |
| |
| err2: |
| scsi_host_put(vn_port->host); |
| err1: |
| 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 */ |
| if (vn_port->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_e4 *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_e4 *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_e4 *sb_virt; |
| dma_addr_t sb_phys; |
| int ret; |
| |
| sb_virt = dma_alloc_coherent(&qedf->pdev->dev, |
| sizeof(struct status_block_e4), &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 = 0, rc; |
| 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 1; |
| } |
| |
| /* |
| * Make sure we allocated the PBL that will contain the physical |
| * addresses of our queues |
| */ |
| if (!qedf->p_cpuq) { |
| status = 1; |
| 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 */ |
| rc = qedf_alloc_bdq(qedf); |
| if (rc) { |
| 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; |
| |
| /* |
| * When doing error recovery we didn't reap the lport so don't try |
| * to reallocate it. |
| */ |
| 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) { |
| 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; |
| } |
| |
| /* 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->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) == false) |
| 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"); |
| |
| 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); |
| } |
| |
| /* |
| * 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); |
| |
| if (!qedf) { |
| QEDF_ERR(NULL, "qedf is NULL"); |
| return; |
| } |
| QEDF_ERR(&qedf->dbg_ctx, "Performing software context reset.\n"); |
| 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); |