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- /*
- * Copyright 2008 Cisco Systems, Inc. All rights reserved.
- * Copyright 2007 Nuova Systems, Inc. All rights reserved.
- *
- * This program is free software; you may redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
- #include <linux/errno.h>
- #include <linux/pci.h>
- #include <linux/slab.h>
- #include <linux/skbuff.h>
- #include <linux/interrupt.h>
- #include <linux/spinlock.h>
- #include <linux/if_ether.h>
- #include <linux/if_vlan.h>
- #include <linux/workqueue.h>
- #include <scsi/fc/fc_fip.h>
- #include <scsi/fc/fc_els.h>
- #include <scsi/fc/fc_fcoe.h>
- #include <scsi/fc_frame.h>
- #include <scsi/libfc.h>
- #include "fnic_io.h"
- #include "fnic.h"
- #include "fnic_fip.h"
- #include "cq_enet_desc.h"
- #include "cq_exch_desc.h"
- static u8 fcoe_all_fcfs[ETH_ALEN] = FIP_ALL_FCF_MACS;
- struct workqueue_struct *fnic_fip_queue;
- struct workqueue_struct *fnic_event_queue;
- static void fnic_set_eth_mode(struct fnic *);
- static void fnic_fcoe_send_vlan_req(struct fnic *fnic);
- static void fnic_fcoe_start_fcf_disc(struct fnic *fnic);
- static void fnic_fcoe_process_vlan_resp(struct fnic *fnic, struct sk_buff *);
- static int fnic_fcoe_vlan_check(struct fnic *fnic, u16 flag);
- static int fnic_fcoe_handle_fip_frame(struct fnic *fnic, struct sk_buff *skb);
- void fnic_handle_link(struct work_struct *work)
- {
- struct fnic *fnic = container_of(work, struct fnic, link_work);
- unsigned long flags;
- int old_link_status;
- u32 old_link_down_cnt;
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- if (fnic->stop_rx_link_events) {
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- return;
- }
- old_link_down_cnt = fnic->link_down_cnt;
- old_link_status = fnic->link_status;
- fnic->link_status = vnic_dev_link_status(fnic->vdev);
- fnic->link_down_cnt = vnic_dev_link_down_cnt(fnic->vdev);
- switch (vnic_dev_port_speed(fnic->vdev)) {
- case DCEM_PORTSPEED_10G:
- fc_host_speed(fnic->lport->host) = FC_PORTSPEED_10GBIT;
- fnic->lport->link_supported_speeds = FC_PORTSPEED_10GBIT;
- break;
- case DCEM_PORTSPEED_25G:
- fc_host_speed(fnic->lport->host) = FC_PORTSPEED_25GBIT;
- fnic->lport->link_supported_speeds = FC_PORTSPEED_25GBIT;
- break;
- case DCEM_PORTSPEED_40G:
- case DCEM_PORTSPEED_4x10G:
- fc_host_speed(fnic->lport->host) = FC_PORTSPEED_40GBIT;
- fnic->lport->link_supported_speeds = FC_PORTSPEED_40GBIT;
- break;
- case DCEM_PORTSPEED_100G:
- fc_host_speed(fnic->lport->host) = FC_PORTSPEED_100GBIT;
- fnic->lport->link_supported_speeds = FC_PORTSPEED_100GBIT;
- break;
- default:
- fc_host_speed(fnic->lport->host) = FC_PORTSPEED_UNKNOWN;
- fnic->lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
- break;
- }
- if (old_link_status == fnic->link_status) {
- if (!fnic->link_status) {
- /* DOWN -> DOWN */
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- fnic_fc_trace_set_data(fnic->lport->host->host_no,
- FNIC_FC_LE, "Link Status: DOWN->DOWN",
- strlen("Link Status: DOWN->DOWN"));
- } else {
- if (old_link_down_cnt != fnic->link_down_cnt) {
- /* UP -> DOWN -> UP */
- fnic->lport->host_stats.link_failure_count++;
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- fnic_fc_trace_set_data(
- fnic->lport->host->host_no,
- FNIC_FC_LE,
- "Link Status:UP_DOWN_UP",
- strlen("Link_Status:UP_DOWN_UP")
- );
- FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
- "link down\n");
- fcoe_ctlr_link_down(&fnic->ctlr);
- if (fnic->config.flags & VFCF_FIP_CAPABLE) {
- /* start FCoE VLAN discovery */
- fnic_fc_trace_set_data(
- fnic->lport->host->host_no,
- FNIC_FC_LE,
- "Link Status: UP_DOWN_UP_VLAN",
- strlen(
- "Link Status: UP_DOWN_UP_VLAN")
- );
- fnic_fcoe_send_vlan_req(fnic);
- return;
- }
- FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
- "link up\n");
- fcoe_ctlr_link_up(&fnic->ctlr);
- } else {
- /* UP -> UP */
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- fnic_fc_trace_set_data(
- fnic->lport->host->host_no, FNIC_FC_LE,
- "Link Status: UP_UP",
- strlen("Link Status: UP_UP"));
- }
- }
- } else if (fnic->link_status) {
- /* DOWN -> UP */
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- if (fnic->config.flags & VFCF_FIP_CAPABLE) {
- /* start FCoE VLAN discovery */
- fnic_fc_trace_set_data(
- fnic->lport->host->host_no,
- FNIC_FC_LE, "Link Status: DOWN_UP_VLAN",
- strlen("Link Status: DOWN_UP_VLAN"));
- fnic_fcoe_send_vlan_req(fnic);
- return;
- }
- FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "link up\n");
- fnic_fc_trace_set_data(fnic->lport->host->host_no, FNIC_FC_LE,
- "Link Status: DOWN_UP", strlen("Link Status: DOWN_UP"));
- fcoe_ctlr_link_up(&fnic->ctlr);
- } else {
- /* UP -> DOWN */
- fnic->lport->host_stats.link_failure_count++;
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "link down\n");
- fnic_fc_trace_set_data(
- fnic->lport->host->host_no, FNIC_FC_LE,
- "Link Status: UP_DOWN",
- strlen("Link Status: UP_DOWN"));
- if (fnic->config.flags & VFCF_FIP_CAPABLE) {
- FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
- "deleting fip-timer during link-down\n");
- del_timer_sync(&fnic->fip_timer);
- }
- fcoe_ctlr_link_down(&fnic->ctlr);
- }
- }
- /*
- * This function passes incoming fabric frames to libFC
- */
- void fnic_handle_frame(struct work_struct *work)
- {
- struct fnic *fnic = container_of(work, struct fnic, frame_work);
- struct fc_lport *lp = fnic->lport;
- unsigned long flags;
- struct sk_buff *skb;
- struct fc_frame *fp;
- while ((skb = skb_dequeue(&fnic->frame_queue))) {
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- if (fnic->stop_rx_link_events) {
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- dev_kfree_skb(skb);
- return;
- }
- fp = (struct fc_frame *)skb;
- /*
- * If we're in a transitional state, just re-queue and return.
- * The queue will be serviced when we get to a stable state.
- */
- if (fnic->state != FNIC_IN_FC_MODE &&
- fnic->state != FNIC_IN_ETH_MODE) {
- skb_queue_head(&fnic->frame_queue, skb);
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- return;
- }
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- fc_exch_recv(lp, fp);
- }
- }
- void fnic_fcoe_evlist_free(struct fnic *fnic)
- {
- struct fnic_event *fevt = NULL;
- struct fnic_event *next = NULL;
- unsigned long flags;
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- if (list_empty(&fnic->evlist)) {
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- return;
- }
- list_for_each_entry_safe(fevt, next, &fnic->evlist, list) {
- list_del(&fevt->list);
- kfree(fevt);
- }
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- }
- void fnic_handle_event(struct work_struct *work)
- {
- struct fnic *fnic = container_of(work, struct fnic, event_work);
- struct fnic_event *fevt = NULL;
- struct fnic_event *next = NULL;
- unsigned long flags;
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- if (list_empty(&fnic->evlist)) {
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- return;
- }
- list_for_each_entry_safe(fevt, next, &fnic->evlist, list) {
- if (fnic->stop_rx_link_events) {
- list_del(&fevt->list);
- kfree(fevt);
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- return;
- }
- /*
- * If we're in a transitional state, just re-queue and return.
- * The queue will be serviced when we get to a stable state.
- */
- if (fnic->state != FNIC_IN_FC_MODE &&
- fnic->state != FNIC_IN_ETH_MODE) {
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- return;
- }
- list_del(&fevt->list);
- switch (fevt->event) {
- case FNIC_EVT_START_VLAN_DISC:
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- fnic_fcoe_send_vlan_req(fnic);
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- break;
- case FNIC_EVT_START_FCF_DISC:
- FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
- "Start FCF Discovery\n");
- fnic_fcoe_start_fcf_disc(fnic);
- break;
- default:
- FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
- "Unknown event 0x%x\n", fevt->event);
- break;
- }
- kfree(fevt);
- }
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- }
- /**
- * Check if the Received FIP FLOGI frame is rejected
- * @fip: The FCoE controller that received the frame
- * @skb: The received FIP frame
- *
- * Returns non-zero if the frame is rejected with unsupported cmd with
- * insufficient resource els explanation.
- */
- static inline int is_fnic_fip_flogi_reject(struct fcoe_ctlr *fip,
- struct sk_buff *skb)
- {
- struct fc_lport *lport = fip->lp;
- struct fip_header *fiph;
- struct fc_frame_header *fh = NULL;
- struct fip_desc *desc;
- struct fip_encaps *els;
- enum fip_desc_type els_dtype = 0;
- u16 op;
- u8 els_op;
- u8 sub;
- size_t els_len = 0;
- size_t rlen;
- size_t dlen = 0;
- if (skb_linearize(skb))
- return 0;
- if (skb->len < sizeof(*fiph))
- return 0;
- fiph = (struct fip_header *)skb->data;
- op = ntohs(fiph->fip_op);
- sub = fiph->fip_subcode;
- if (op != FIP_OP_LS)
- return 0;
- if (sub != FIP_SC_REP)
- return 0;
- rlen = ntohs(fiph->fip_dl_len) * 4;
- if (rlen + sizeof(*fiph) > skb->len)
- return 0;
- desc = (struct fip_desc *)(fiph + 1);
- dlen = desc->fip_dlen * FIP_BPW;
- if (desc->fip_dtype == FIP_DT_FLOGI) {
- if (dlen < sizeof(*els) + sizeof(*fh) + 1)
- return 0;
- els_len = dlen - sizeof(*els);
- els = (struct fip_encaps *)desc;
- fh = (struct fc_frame_header *)(els + 1);
- els_dtype = desc->fip_dtype;
- if (!fh)
- return 0;
- /*
- * ELS command code, reason and explanation should be = Reject,
- * unsupported command and insufficient resource
- */
- els_op = *(u8 *)(fh + 1);
- if (els_op == ELS_LS_RJT) {
- shost_printk(KERN_INFO, lport->host,
- "Flogi Request Rejected by Switch\n");
- return 1;
- }
- shost_printk(KERN_INFO, lport->host,
- "Flogi Request Accepted by Switch\n");
- }
- return 0;
- }
- static void fnic_fcoe_send_vlan_req(struct fnic *fnic)
- {
- struct fcoe_ctlr *fip = &fnic->ctlr;
- struct fnic_stats *fnic_stats = &fnic->fnic_stats;
- struct sk_buff *skb;
- char *eth_fr;
- int fr_len;
- struct fip_vlan *vlan;
- u64 vlan_tov;
- fnic_fcoe_reset_vlans(fnic);
- fnic->set_vlan(fnic, 0);
- if (printk_ratelimit())
- FNIC_FCS_DBG(KERN_INFO, fnic->lport->host,
- "Sending VLAN request...\n");
- skb = dev_alloc_skb(sizeof(struct fip_vlan));
- if (!skb)
- return;
- fr_len = sizeof(*vlan);
- eth_fr = (char *)skb->data;
- vlan = (struct fip_vlan *)eth_fr;
- memset(vlan, 0, sizeof(*vlan));
- memcpy(vlan->eth.h_source, fip->ctl_src_addr, ETH_ALEN);
- memcpy(vlan->eth.h_dest, fcoe_all_fcfs, ETH_ALEN);
- vlan->eth.h_proto = htons(ETH_P_FIP);
- vlan->fip.fip_ver = FIP_VER_ENCAPS(FIP_VER);
- vlan->fip.fip_op = htons(FIP_OP_VLAN);
- vlan->fip.fip_subcode = FIP_SC_VL_REQ;
- vlan->fip.fip_dl_len = htons(sizeof(vlan->desc) / FIP_BPW);
- vlan->desc.mac.fd_desc.fip_dtype = FIP_DT_MAC;
- vlan->desc.mac.fd_desc.fip_dlen = sizeof(vlan->desc.mac) / FIP_BPW;
- memcpy(&vlan->desc.mac.fd_mac, fip->ctl_src_addr, ETH_ALEN);
- vlan->desc.wwnn.fd_desc.fip_dtype = FIP_DT_NAME;
- vlan->desc.wwnn.fd_desc.fip_dlen = sizeof(vlan->desc.wwnn) / FIP_BPW;
- put_unaligned_be64(fip->lp->wwnn, &vlan->desc.wwnn.fd_wwn);
- atomic64_inc(&fnic_stats->vlan_stats.vlan_disc_reqs);
- skb_put(skb, sizeof(*vlan));
- skb->protocol = htons(ETH_P_FIP);
- skb_reset_mac_header(skb);
- skb_reset_network_header(skb);
- fip->send(fip, skb);
- /* set a timer so that we can retry if there no response */
- vlan_tov = jiffies + msecs_to_jiffies(FCOE_CTLR_FIPVLAN_TOV);
- mod_timer(&fnic->fip_timer, round_jiffies(vlan_tov));
- }
- static void fnic_fcoe_process_vlan_resp(struct fnic *fnic, struct sk_buff *skb)
- {
- struct fcoe_ctlr *fip = &fnic->ctlr;
- struct fip_header *fiph;
- struct fip_desc *desc;
- struct fnic_stats *fnic_stats = &fnic->fnic_stats;
- u16 vid;
- size_t rlen;
- size_t dlen;
- struct fcoe_vlan *vlan;
- u64 sol_time;
- unsigned long flags;
- FNIC_FCS_DBG(KERN_INFO, fnic->lport->host,
- "Received VLAN response...\n");
- fiph = (struct fip_header *) skb->data;
- FNIC_FCS_DBG(KERN_INFO, fnic->lport->host,
- "Received VLAN response... OP 0x%x SUB_OP 0x%x\n",
- ntohs(fiph->fip_op), fiph->fip_subcode);
- rlen = ntohs(fiph->fip_dl_len) * 4;
- fnic_fcoe_reset_vlans(fnic);
- spin_lock_irqsave(&fnic->vlans_lock, flags);
- desc = (struct fip_desc *)(fiph + 1);
- while (rlen > 0) {
- dlen = desc->fip_dlen * FIP_BPW;
- switch (desc->fip_dtype) {
- case FIP_DT_VLAN:
- vid = ntohs(((struct fip_vlan_desc *)desc)->fd_vlan);
- shost_printk(KERN_INFO, fnic->lport->host,
- "process_vlan_resp: FIP VLAN %d\n", vid);
- vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC);
- if (!vlan) {
- /* retry from timer */
- spin_unlock_irqrestore(&fnic->vlans_lock,
- flags);
- goto out;
- }
- vlan->vid = vid & 0x0fff;
- vlan->state = FIP_VLAN_AVAIL;
- list_add_tail(&vlan->list, &fnic->vlans);
- break;
- }
- desc = (struct fip_desc *)((char *)desc + dlen);
- rlen -= dlen;
- }
- /* any VLAN descriptors present ? */
- if (list_empty(&fnic->vlans)) {
- /* retry from timer */
- atomic64_inc(&fnic_stats->vlan_stats.resp_withno_vlanID);
- FNIC_FCS_DBG(KERN_INFO, fnic->lport->host,
- "No VLAN descriptors in FIP VLAN response\n");
- spin_unlock_irqrestore(&fnic->vlans_lock, flags);
- goto out;
- }
- vlan = list_first_entry(&fnic->vlans, struct fcoe_vlan, list);
- fnic->set_vlan(fnic, vlan->vid);
- vlan->state = FIP_VLAN_SENT; /* sent now */
- vlan->sol_count++;
- spin_unlock_irqrestore(&fnic->vlans_lock, flags);
- /* start the solicitation */
- fcoe_ctlr_link_up(fip);
- sol_time = jiffies + msecs_to_jiffies(FCOE_CTLR_START_DELAY);
- mod_timer(&fnic->fip_timer, round_jiffies(sol_time));
- out:
- return;
- }
- static void fnic_fcoe_start_fcf_disc(struct fnic *fnic)
- {
- unsigned long flags;
- struct fcoe_vlan *vlan;
- u64 sol_time;
- spin_lock_irqsave(&fnic->vlans_lock, flags);
- vlan = list_first_entry(&fnic->vlans, struct fcoe_vlan, list);
- fnic->set_vlan(fnic, vlan->vid);
- vlan->state = FIP_VLAN_SENT; /* sent now */
- vlan->sol_count = 1;
- spin_unlock_irqrestore(&fnic->vlans_lock, flags);
- /* start the solicitation */
- fcoe_ctlr_link_up(&fnic->ctlr);
- sol_time = jiffies + msecs_to_jiffies(FCOE_CTLR_START_DELAY);
- mod_timer(&fnic->fip_timer, round_jiffies(sol_time));
- }
- static int fnic_fcoe_vlan_check(struct fnic *fnic, u16 flag)
- {
- unsigned long flags;
- struct fcoe_vlan *fvlan;
- spin_lock_irqsave(&fnic->vlans_lock, flags);
- if (list_empty(&fnic->vlans)) {
- spin_unlock_irqrestore(&fnic->vlans_lock, flags);
- return -EINVAL;
- }
- fvlan = list_first_entry(&fnic->vlans, struct fcoe_vlan, list);
- if (fvlan->state == FIP_VLAN_USED) {
- spin_unlock_irqrestore(&fnic->vlans_lock, flags);
- return 0;
- }
- if (fvlan->state == FIP_VLAN_SENT) {
- fvlan->state = FIP_VLAN_USED;
- spin_unlock_irqrestore(&fnic->vlans_lock, flags);
- return 0;
- }
- spin_unlock_irqrestore(&fnic->vlans_lock, flags);
- return -EINVAL;
- }
- static void fnic_event_enq(struct fnic *fnic, enum fnic_evt ev)
- {
- struct fnic_event *fevt;
- unsigned long flags;
- fevt = kmalloc(sizeof(*fevt), GFP_ATOMIC);
- if (!fevt)
- return;
- fevt->fnic = fnic;
- fevt->event = ev;
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- list_add_tail(&fevt->list, &fnic->evlist);
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- schedule_work(&fnic->event_work);
- }
- static int fnic_fcoe_handle_fip_frame(struct fnic *fnic, struct sk_buff *skb)
- {
- struct fip_header *fiph;
- int ret = 1;
- u16 op;
- u8 sub;
- if (!skb || !(skb->data))
- return -1;
- if (skb_linearize(skb))
- goto drop;
- fiph = (struct fip_header *)skb->data;
- op = ntohs(fiph->fip_op);
- sub = fiph->fip_subcode;
- if (FIP_VER_DECAPS(fiph->fip_ver) != FIP_VER)
- goto drop;
- if (ntohs(fiph->fip_dl_len) * FIP_BPW + sizeof(*fiph) > skb->len)
- goto drop;
- if (op == FIP_OP_DISC && sub == FIP_SC_ADV) {
- if (fnic_fcoe_vlan_check(fnic, ntohs(fiph->fip_flags)))
- goto drop;
- /* pass it on to fcoe */
- ret = 1;
- } else if (op == FIP_OP_VLAN && sub == FIP_SC_VL_NOTE) {
- /* set the vlan as used */
- fnic_fcoe_process_vlan_resp(fnic, skb);
- ret = 0;
- } else if (op == FIP_OP_CTRL && sub == FIP_SC_CLR_VLINK) {
- /* received CVL request, restart vlan disc */
- fnic_event_enq(fnic, FNIC_EVT_START_VLAN_DISC);
- /* pass it on to fcoe */
- ret = 1;
- }
- drop:
- return ret;
- }
- void fnic_handle_fip_frame(struct work_struct *work)
- {
- struct fnic *fnic = container_of(work, struct fnic, fip_frame_work);
- struct fnic_stats *fnic_stats = &fnic->fnic_stats;
- unsigned long flags;
- struct sk_buff *skb;
- struct ethhdr *eh;
- while ((skb = skb_dequeue(&fnic->fip_frame_queue))) {
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- if (fnic->stop_rx_link_events) {
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- dev_kfree_skb(skb);
- return;
- }
- /*
- * If we're in a transitional state, just re-queue and return.
- * The queue will be serviced when we get to a stable state.
- */
- if (fnic->state != FNIC_IN_FC_MODE &&
- fnic->state != FNIC_IN_ETH_MODE) {
- skb_queue_head(&fnic->fip_frame_queue, skb);
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- return;
- }
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- eh = (struct ethhdr *)skb->data;
- if (eh->h_proto == htons(ETH_P_FIP)) {
- skb_pull(skb, sizeof(*eh));
- if (fnic_fcoe_handle_fip_frame(fnic, skb) <= 0) {
- dev_kfree_skb(skb);
- continue;
- }
- /*
- * If there's FLOGI rejects - clear all
- * fcf's & restart from scratch
- */
- if (is_fnic_fip_flogi_reject(&fnic->ctlr, skb)) {
- atomic64_inc(
- &fnic_stats->vlan_stats.flogi_rejects);
- shost_printk(KERN_INFO, fnic->lport->host,
- "Trigger a Link down - VLAN Disc\n");
- fcoe_ctlr_link_down(&fnic->ctlr);
- /* start FCoE VLAN discovery */
- fnic_fcoe_send_vlan_req(fnic);
- dev_kfree_skb(skb);
- continue;
- }
- fcoe_ctlr_recv(&fnic->ctlr, skb);
- continue;
- }
- }
- }
- /**
- * fnic_import_rq_eth_pkt() - handle received FCoE or FIP frame.
- * @fnic: fnic instance.
- * @skb: Ethernet Frame.
- */
- static inline int fnic_import_rq_eth_pkt(struct fnic *fnic, struct sk_buff *skb)
- {
- struct fc_frame *fp;
- struct ethhdr *eh;
- struct fcoe_hdr *fcoe_hdr;
- struct fcoe_crc_eof *ft;
- /*
- * Undo VLAN encapsulation if present.
- */
- eh = (struct ethhdr *)skb->data;
- 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);
- }
- if (eh->h_proto == htons(ETH_P_FIP)) {
- if (!(fnic->config.flags & VFCF_FIP_CAPABLE)) {
- printk(KERN_ERR "Dropped FIP frame, as firmware "
- "uses non-FIP mode, Enable FIP "
- "using UCSM\n");
- goto drop;
- }
- if ((fnic_fc_trace_set_data(fnic->lport->host->host_no,
- FNIC_FC_RECV|0x80, (char *)skb->data, skb->len)) != 0) {
- printk(KERN_ERR "fnic ctlr frame trace error!!!");
- }
- skb_queue_tail(&fnic->fip_frame_queue, skb);
- queue_work(fnic_fip_queue, &fnic->fip_frame_work);
- return 1; /* let caller know packet was used */
- }
- if (eh->h_proto != htons(ETH_P_FCOE))
- goto drop;
- skb_set_network_header(skb, sizeof(*eh));
- skb_pull(skb, sizeof(*eh));
- fcoe_hdr = (struct fcoe_hdr *)skb->data;
- if (FC_FCOE_DECAPS_VER(fcoe_hdr) != FC_FCOE_VER)
- goto drop;
- fp = (struct fc_frame *)skb;
- fc_frame_init(fp);
- fr_sof(fp) = fcoe_hdr->fcoe_sof;
- skb_pull(skb, sizeof(struct fcoe_hdr));
- skb_reset_transport_header(skb);
- ft = (struct fcoe_crc_eof *)(skb->data + skb->len - sizeof(*ft));
- fr_eof(fp) = ft->fcoe_eof;
- skb_trim(skb, skb->len - sizeof(*ft));
- return 0;
- drop:
- dev_kfree_skb_irq(skb);
- return -1;
- }
- /**
- * fnic_update_mac_locked() - set data MAC address and filters.
- * @fnic: fnic instance.
- * @new: newly-assigned FCoE MAC address.
- *
- * Called with the fnic lock held.
- */
- void fnic_update_mac_locked(struct fnic *fnic, u8 *new)
- {
- u8 *ctl = fnic->ctlr.ctl_src_addr;
- u8 *data = fnic->data_src_addr;
- if (is_zero_ether_addr(new))
- new = ctl;
- if (ether_addr_equal(data, new))
- return;
- FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "update_mac %pM\n", new);
- if (!is_zero_ether_addr(data) && !ether_addr_equal(data, ctl))
- vnic_dev_del_addr(fnic->vdev, data);
- memcpy(data, new, ETH_ALEN);
- if (!ether_addr_equal(new, ctl))
- vnic_dev_add_addr(fnic->vdev, new);
- }
- /**
- * fnic_update_mac() - set data MAC address and filters.
- * @lport: local port.
- * @new: newly-assigned FCoE MAC address.
- */
- void fnic_update_mac(struct fc_lport *lport, u8 *new)
- {
- struct fnic *fnic = lport_priv(lport);
- spin_lock_irq(&fnic->fnic_lock);
- fnic_update_mac_locked(fnic, new);
- spin_unlock_irq(&fnic->fnic_lock);
- }
- /**
- * fnic_set_port_id() - set the port_ID after successful FLOGI.
- * @lport: local port.
- * @port_id: assigned FC_ID.
- * @fp: received frame containing the FLOGI accept or NULL.
- *
- * This is called from libfc when a new FC_ID has been assigned.
- * This causes us to reset the firmware to FC_MODE and setup the new MAC
- * address and FC_ID.
- *
- * It is also called with FC_ID 0 when we're logged off.
- *
- * If the FC_ID is due to point-to-point, fp may be NULL.
- */
- void fnic_set_port_id(struct fc_lport *lport, u32 port_id, struct fc_frame *fp)
- {
- struct fnic *fnic = lport_priv(lport);
- u8 *mac;
- int ret;
- FNIC_FCS_DBG(KERN_DEBUG, lport->host, "set port_id %x fp %p\n",
- port_id, fp);
- /*
- * If we're clearing the FC_ID, change to use the ctl_src_addr.
- * Set ethernet mode to send FLOGI.
- */
- if (!port_id) {
- fnic_update_mac(lport, fnic->ctlr.ctl_src_addr);
- fnic_set_eth_mode(fnic);
- return;
- }
- if (fp) {
- mac = fr_cb(fp)->granted_mac;
- if (is_zero_ether_addr(mac)) {
- /* non-FIP - FLOGI already accepted - ignore return */
- fcoe_ctlr_recv_flogi(&fnic->ctlr, lport, fp);
- }
- fnic_update_mac(lport, mac);
- }
- /* Change state to reflect transition to FC mode */
- spin_lock_irq(&fnic->fnic_lock);
- if (fnic->state == FNIC_IN_ETH_MODE || fnic->state == FNIC_IN_FC_MODE)
- fnic->state = FNIC_IN_ETH_TRANS_FC_MODE;
- else {
- FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
- "Unexpected fnic state %s while"
- " processing flogi resp\n",
- fnic_state_to_str(fnic->state));
- spin_unlock_irq(&fnic->fnic_lock);
- return;
- }
- spin_unlock_irq(&fnic->fnic_lock);
- /*
- * Send FLOGI registration to firmware to set up FC mode.
- * The new address will be set up when registration completes.
- */
- ret = fnic_flogi_reg_handler(fnic, port_id);
- if (ret < 0) {
- spin_lock_irq(&fnic->fnic_lock);
- if (fnic->state == FNIC_IN_ETH_TRANS_FC_MODE)
- fnic->state = FNIC_IN_ETH_MODE;
- spin_unlock_irq(&fnic->fnic_lock);
- }
- }
- static void fnic_rq_cmpl_frame_recv(struct vnic_rq *rq, struct cq_desc
- *cq_desc, struct vnic_rq_buf *buf,
- int skipped __attribute__((unused)),
- void *opaque)
- {
- struct fnic *fnic = vnic_dev_priv(rq->vdev);
- struct sk_buff *skb;
- struct fc_frame *fp;
- struct fnic_stats *fnic_stats = &fnic->fnic_stats;
- unsigned int eth_hdrs_stripped;
- u8 type, color, eop, sop, ingress_port, vlan_stripped;
- u8 fcoe = 0, fcoe_sof, fcoe_eof;
- u8 fcoe_fc_crc_ok = 1, fcoe_enc_error = 0;
- u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok;
- u8 ipv6, ipv4, ipv4_fragment, rss_type, csum_not_calc;
- u8 fcs_ok = 1, packet_error = 0;
- u16 q_number, completed_index, bytes_written = 0, vlan, checksum;
- u32 rss_hash;
- u16 exchange_id, tmpl;
- u8 sof = 0;
- u8 eof = 0;
- u32 fcp_bytes_written = 0;
- unsigned long flags;
- pci_unmap_single(fnic->pdev, buf->dma_addr, buf->len,
- PCI_DMA_FROMDEVICE);
- skb = buf->os_buf;
- fp = (struct fc_frame *)skb;
- buf->os_buf = NULL;
- cq_desc_dec(cq_desc, &type, &color, &q_number, &completed_index);
- if (type == CQ_DESC_TYPE_RQ_FCP) {
- cq_fcp_rq_desc_dec((struct cq_fcp_rq_desc *)cq_desc,
- &type, &color, &q_number, &completed_index,
- &eop, &sop, &fcoe_fc_crc_ok, &exchange_id,
- &tmpl, &fcp_bytes_written, &sof, &eof,
- &ingress_port, &packet_error,
- &fcoe_enc_error, &fcs_ok, &vlan_stripped,
- &vlan);
- eth_hdrs_stripped = 1;
- skb_trim(skb, fcp_bytes_written);
- fr_sof(fp) = sof;
- fr_eof(fp) = eof;
- } else if (type == CQ_DESC_TYPE_RQ_ENET) {
- cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc,
- &type, &color, &q_number, &completed_index,
- &ingress_port, &fcoe, &eop, &sop,
- &rss_type, &csum_not_calc, &rss_hash,
- &bytes_written, &packet_error,
- &vlan_stripped, &vlan, &checksum,
- &fcoe_sof, &fcoe_fc_crc_ok,
- &fcoe_enc_error, &fcoe_eof,
- &tcp_udp_csum_ok, &udp, &tcp,
- &ipv4_csum_ok, &ipv6, &ipv4,
- &ipv4_fragment, &fcs_ok);
- eth_hdrs_stripped = 0;
- skb_trim(skb, bytes_written);
- if (!fcs_ok) {
- atomic64_inc(&fnic_stats->misc_stats.frame_errors);
- FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
- "fcs error. dropping packet.\n");
- goto drop;
- }
- if (fnic_import_rq_eth_pkt(fnic, skb))
- return;
- } else {
- /* wrong CQ type*/
- shost_printk(KERN_ERR, fnic->lport->host,
- "fnic rq_cmpl wrong cq type x%x\n", type);
- goto drop;
- }
- if (!fcs_ok || packet_error || !fcoe_fc_crc_ok || fcoe_enc_error) {
- atomic64_inc(&fnic_stats->misc_stats.frame_errors);
- FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
- "fnic rq_cmpl fcoe x%x fcsok x%x"
- " pkterr x%x fcoe_fc_crc_ok x%x, fcoe_enc_err"
- " x%x\n",
- fcoe, fcs_ok, packet_error,
- fcoe_fc_crc_ok, fcoe_enc_error);
- goto drop;
- }
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- if (fnic->stop_rx_link_events) {
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- goto drop;
- }
- fr_dev(fp) = fnic->lport;
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- if ((fnic_fc_trace_set_data(fnic->lport->host->host_no, FNIC_FC_RECV,
- (char *)skb->data, skb->len)) != 0) {
- printk(KERN_ERR "fnic ctlr frame trace error!!!");
- }
- skb_queue_tail(&fnic->frame_queue, skb);
- queue_work(fnic_event_queue, &fnic->frame_work);
- return;
- drop:
- dev_kfree_skb_irq(skb);
- }
- static int fnic_rq_cmpl_handler_cont(struct vnic_dev *vdev,
- struct cq_desc *cq_desc, u8 type,
- u16 q_number, u16 completed_index,
- void *opaque)
- {
- struct fnic *fnic = vnic_dev_priv(vdev);
- vnic_rq_service(&fnic->rq[q_number], cq_desc, completed_index,
- VNIC_RQ_RETURN_DESC, fnic_rq_cmpl_frame_recv,
- NULL);
- return 0;
- }
- int fnic_rq_cmpl_handler(struct fnic *fnic, int rq_work_to_do)
- {
- unsigned int tot_rq_work_done = 0, cur_work_done;
- unsigned int i;
- int err;
- for (i = 0; i < fnic->rq_count; i++) {
- cur_work_done = vnic_cq_service(&fnic->cq[i], rq_work_to_do,
- fnic_rq_cmpl_handler_cont,
- NULL);
- if (cur_work_done) {
- err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
- if (err)
- shost_printk(KERN_ERR, fnic->lport->host,
- "fnic_alloc_rq_frame can't alloc"
- " frame\n");
- }
- tot_rq_work_done += cur_work_done;
- }
- return tot_rq_work_done;
- }
- /*
- * This function is called once at init time to allocate and fill RQ
- * buffers. Subsequently, it is called in the interrupt context after RQ
- * buffer processing to replenish the buffers in the RQ
- */
- int fnic_alloc_rq_frame(struct vnic_rq *rq)
- {
- struct fnic *fnic = vnic_dev_priv(rq->vdev);
- struct sk_buff *skb;
- u16 len;
- dma_addr_t pa;
- int r;
- len = FC_FRAME_HEADROOM + FC_MAX_FRAME + FC_FRAME_TAILROOM;
- skb = dev_alloc_skb(len);
- if (!skb) {
- FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
- "Unable to allocate RQ sk_buff\n");
- return -ENOMEM;
- }
- skb_reset_mac_header(skb);
- skb_reset_transport_header(skb);
- skb_reset_network_header(skb);
- skb_put(skb, len);
- pa = pci_map_single(fnic->pdev, skb->data, len, PCI_DMA_FROMDEVICE);
- if (pci_dma_mapping_error(fnic->pdev, pa)) {
- r = -ENOMEM;
- printk(KERN_ERR "PCI mapping failed with error %d\n", r);
- goto free_skb;
- }
- fnic_queue_rq_desc(rq, skb, pa, len);
- return 0;
- free_skb:
- kfree_skb(skb);
- return r;
- }
- void fnic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf)
- {
- struct fc_frame *fp = buf->os_buf;
- struct fnic *fnic = vnic_dev_priv(rq->vdev);
- pci_unmap_single(fnic->pdev, buf->dma_addr, buf->len,
- PCI_DMA_FROMDEVICE);
- dev_kfree_skb(fp_skb(fp));
- buf->os_buf = NULL;
- }
- /**
- * fnic_eth_send() - Send Ethernet frame.
- * @fip: fcoe_ctlr instance.
- * @skb: Ethernet Frame, FIP, without VLAN encapsulation.
- */
- void fnic_eth_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
- {
- struct fnic *fnic = fnic_from_ctlr(fip);
- struct vnic_wq *wq = &fnic->wq[0];
- dma_addr_t pa;
- struct ethhdr *eth_hdr;
- struct vlan_ethhdr *vlan_hdr;
- unsigned long flags;
- int r;
- if (!fnic->vlan_hw_insert) {
- eth_hdr = (struct ethhdr *)skb_mac_header(skb);
- vlan_hdr = skb_push(skb, sizeof(*vlan_hdr) - sizeof(*eth_hdr));
- memcpy(vlan_hdr, eth_hdr, 2 * ETH_ALEN);
- vlan_hdr->h_vlan_proto = htons(ETH_P_8021Q);
- vlan_hdr->h_vlan_encapsulated_proto = eth_hdr->h_proto;
- vlan_hdr->h_vlan_TCI = htons(fnic->vlan_id);
- if ((fnic_fc_trace_set_data(fnic->lport->host->host_no,
- FNIC_FC_SEND|0x80, (char *)eth_hdr, skb->len)) != 0) {
- printk(KERN_ERR "fnic ctlr frame trace error!!!");
- }
- } else {
- if ((fnic_fc_trace_set_data(fnic->lport->host->host_no,
- FNIC_FC_SEND|0x80, (char *)skb->data, skb->len)) != 0) {
- printk(KERN_ERR "fnic ctlr frame trace error!!!");
- }
- }
- pa = pci_map_single(fnic->pdev, skb->data, skb->len, PCI_DMA_TODEVICE);
- r = pci_dma_mapping_error(fnic->pdev, pa);
- if (r) {
- printk(KERN_ERR "PCI mapping failed with error %d\n", r);
- goto free_skb;
- }
- spin_lock_irqsave(&fnic->wq_lock[0], flags);
- if (!vnic_wq_desc_avail(wq))
- goto irq_restore;
- fnic_queue_wq_eth_desc(wq, skb, pa, skb->len,
- 0 /* hw inserts cos value */,
- fnic->vlan_id, 1);
- spin_unlock_irqrestore(&fnic->wq_lock[0], flags);
- return;
- irq_restore:
- spin_unlock_irqrestore(&fnic->wq_lock[0], flags);
- pci_unmap_single(fnic->pdev, pa, skb->len, PCI_DMA_TODEVICE);
- free_skb:
- kfree_skb(skb);
- }
- /*
- * Send FC frame.
- */
- static int fnic_send_frame(struct fnic *fnic, struct fc_frame *fp)
- {
- struct vnic_wq *wq = &fnic->wq[0];
- struct sk_buff *skb;
- dma_addr_t pa;
- struct ethhdr *eth_hdr;
- struct vlan_ethhdr *vlan_hdr;
- struct fcoe_hdr *fcoe_hdr;
- struct fc_frame_header *fh;
- u32 tot_len, eth_hdr_len;
- int ret = 0;
- unsigned long flags;
- fh = fc_frame_header_get(fp);
- skb = fp_skb(fp);
- if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ) &&
- fcoe_ctlr_els_send(&fnic->ctlr, fnic->lport, skb))
- return 0;
- if (!fnic->vlan_hw_insert) {
- eth_hdr_len = sizeof(*vlan_hdr) + sizeof(*fcoe_hdr);
- vlan_hdr = skb_push(skb, eth_hdr_len);
- eth_hdr = (struct ethhdr *)vlan_hdr;
- vlan_hdr->h_vlan_proto = htons(ETH_P_8021Q);
- vlan_hdr->h_vlan_encapsulated_proto = htons(ETH_P_FCOE);
- vlan_hdr->h_vlan_TCI = htons(fnic->vlan_id);
- fcoe_hdr = (struct fcoe_hdr *)(vlan_hdr + 1);
- } else {
- eth_hdr_len = sizeof(*eth_hdr) + sizeof(*fcoe_hdr);
- eth_hdr = skb_push(skb, eth_hdr_len);
- eth_hdr->h_proto = htons(ETH_P_FCOE);
- fcoe_hdr = (struct fcoe_hdr *)(eth_hdr + 1);
- }
- if (fnic->ctlr.map_dest)
- fc_fcoe_set_mac(eth_hdr->h_dest, fh->fh_d_id);
- else
- memcpy(eth_hdr->h_dest, fnic->ctlr.dest_addr, ETH_ALEN);
- memcpy(eth_hdr->h_source, fnic->data_src_addr, ETH_ALEN);
- tot_len = skb->len;
- BUG_ON(tot_len % 4);
- memset(fcoe_hdr, 0, sizeof(*fcoe_hdr));
- fcoe_hdr->fcoe_sof = fr_sof(fp);
- if (FC_FCOE_VER)
- FC_FCOE_ENCAPS_VER(fcoe_hdr, FC_FCOE_VER);
- pa = pci_map_single(fnic->pdev, eth_hdr, tot_len, PCI_DMA_TODEVICE);
- if (pci_dma_mapping_error(fnic->pdev, pa)) {
- ret = -ENOMEM;
- printk(KERN_ERR "DMA map failed with error %d\n", ret);
- goto free_skb_on_err;
- }
- if ((fnic_fc_trace_set_data(fnic->lport->host->host_no, FNIC_FC_SEND,
- (char *)eth_hdr, tot_len)) != 0) {
- printk(KERN_ERR "fnic ctlr frame trace error!!!");
- }
- spin_lock_irqsave(&fnic->wq_lock[0], flags);
- if (!vnic_wq_desc_avail(wq)) {
- pci_unmap_single(fnic->pdev, pa,
- tot_len, PCI_DMA_TODEVICE);
- ret = -1;
- goto irq_restore;
- }
- fnic_queue_wq_desc(wq, skb, pa, tot_len, fr_eof(fp),
- 0 /* hw inserts cos value */,
- fnic->vlan_id, 1, 1, 1);
- irq_restore:
- spin_unlock_irqrestore(&fnic->wq_lock[0], flags);
- free_skb_on_err:
- if (ret)
- dev_kfree_skb_any(fp_skb(fp));
- return ret;
- }
- /*
- * fnic_send
- * Routine to send a raw frame
- */
- int fnic_send(struct fc_lport *lp, struct fc_frame *fp)
- {
- struct fnic *fnic = lport_priv(lp);
- unsigned long flags;
- if (fnic->in_remove) {
- dev_kfree_skb(fp_skb(fp));
- return -1;
- }
- /*
- * Queue frame if in a transitional state.
- * This occurs while registering the Port_ID / MAC address after FLOGI.
- */
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- if (fnic->state != FNIC_IN_FC_MODE && fnic->state != FNIC_IN_ETH_MODE) {
- skb_queue_tail(&fnic->tx_queue, fp_skb(fp));
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- return 0;
- }
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- return fnic_send_frame(fnic, fp);
- }
- /**
- * fnic_flush_tx() - send queued frames.
- * @fnic: fnic device
- *
- * Send frames that were waiting to go out in FC or Ethernet mode.
- * Whenever changing modes we purge queued frames, so these frames should
- * be queued for the stable mode that we're in, either FC or Ethernet.
- *
- * Called without fnic_lock held.
- */
- void fnic_flush_tx(struct fnic *fnic)
- {
- struct sk_buff *skb;
- struct fc_frame *fp;
- while ((skb = skb_dequeue(&fnic->tx_queue))) {
- fp = (struct fc_frame *)skb;
- fnic_send_frame(fnic, fp);
- }
- }
- /**
- * fnic_set_eth_mode() - put fnic into ethernet mode.
- * @fnic: fnic device
- *
- * Called without fnic lock held.
- */
- static void fnic_set_eth_mode(struct fnic *fnic)
- {
- unsigned long flags;
- enum fnic_state old_state;
- int ret;
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- again:
- old_state = fnic->state;
- switch (old_state) {
- case FNIC_IN_FC_MODE:
- case FNIC_IN_ETH_TRANS_FC_MODE:
- default:
- fnic->state = FNIC_IN_FC_TRANS_ETH_MODE;
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- ret = fnic_fw_reset_handler(fnic);
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- if (fnic->state != FNIC_IN_FC_TRANS_ETH_MODE)
- goto again;
- if (ret)
- fnic->state = old_state;
- break;
- case FNIC_IN_FC_TRANS_ETH_MODE:
- case FNIC_IN_ETH_MODE:
- break;
- }
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- }
- static void fnic_wq_complete_frame_send(struct vnic_wq *wq,
- struct cq_desc *cq_desc,
- struct vnic_wq_buf *buf, void *opaque)
- {
- struct sk_buff *skb = buf->os_buf;
- struct fc_frame *fp = (struct fc_frame *)skb;
- struct fnic *fnic = vnic_dev_priv(wq->vdev);
- pci_unmap_single(fnic->pdev, buf->dma_addr,
- buf->len, PCI_DMA_TODEVICE);
- dev_kfree_skb_irq(fp_skb(fp));
- buf->os_buf = NULL;
- }
- static int fnic_wq_cmpl_handler_cont(struct vnic_dev *vdev,
- struct cq_desc *cq_desc, u8 type,
- u16 q_number, u16 completed_index,
- void *opaque)
- {
- struct fnic *fnic = vnic_dev_priv(vdev);
- unsigned long flags;
- spin_lock_irqsave(&fnic->wq_lock[q_number], flags);
- vnic_wq_service(&fnic->wq[q_number], cq_desc, completed_index,
- fnic_wq_complete_frame_send, NULL);
- spin_unlock_irqrestore(&fnic->wq_lock[q_number], flags);
- return 0;
- }
- int fnic_wq_cmpl_handler(struct fnic *fnic, int work_to_do)
- {
- unsigned int wq_work_done = 0;
- unsigned int i;
- for (i = 0; i < fnic->raw_wq_count; i++) {
- wq_work_done += vnic_cq_service(&fnic->cq[fnic->rq_count+i],
- work_to_do,
- fnic_wq_cmpl_handler_cont,
- NULL);
- }
- return wq_work_done;
- }
- void fnic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf)
- {
- struct fc_frame *fp = buf->os_buf;
- struct fnic *fnic = vnic_dev_priv(wq->vdev);
- pci_unmap_single(fnic->pdev, buf->dma_addr,
- buf->len, PCI_DMA_TODEVICE);
- dev_kfree_skb(fp_skb(fp));
- buf->os_buf = NULL;
- }
- void fnic_fcoe_reset_vlans(struct fnic *fnic)
- {
- unsigned long flags;
- struct fcoe_vlan *vlan;
- struct fcoe_vlan *next;
- /*
- * indicate a link down to fcoe so that all fcf's are free'd
- * might not be required since we did this before sending vlan
- * discovery request
- */
- spin_lock_irqsave(&fnic->vlans_lock, flags);
- if (!list_empty(&fnic->vlans)) {
- list_for_each_entry_safe(vlan, next, &fnic->vlans, list) {
- list_del(&vlan->list);
- kfree(vlan);
- }
- }
- spin_unlock_irqrestore(&fnic->vlans_lock, flags);
- }
- void fnic_handle_fip_timer(struct fnic *fnic)
- {
- unsigned long flags;
- struct fcoe_vlan *vlan;
- struct fnic_stats *fnic_stats = &fnic->fnic_stats;
- u64 sol_time;
- spin_lock_irqsave(&fnic->fnic_lock, flags);
- if (fnic->stop_rx_link_events) {
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- return;
- }
- spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- if (fnic->ctlr.mode == FIP_MODE_NON_FIP)
- return;
- spin_lock_irqsave(&fnic->vlans_lock, flags);
- if (list_empty(&fnic->vlans)) {
- spin_unlock_irqrestore(&fnic->vlans_lock, flags);
- /* no vlans available, try again */
- if (printk_ratelimit())
- FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
- "Start VLAN Discovery\n");
- fnic_event_enq(fnic, FNIC_EVT_START_VLAN_DISC);
- return;
- }
- vlan = list_first_entry(&fnic->vlans, struct fcoe_vlan, list);
- shost_printk(KERN_DEBUG, fnic->lport->host,
- "fip_timer: vlan %d state %d sol_count %d\n",
- vlan->vid, vlan->state, vlan->sol_count);
- switch (vlan->state) {
- case FIP_VLAN_USED:
- FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
- "FIP VLAN is selected for FC transaction\n");
- spin_unlock_irqrestore(&fnic->vlans_lock, flags);
- break;
- case FIP_VLAN_FAILED:
- spin_unlock_irqrestore(&fnic->vlans_lock, flags);
- /* if all vlans are in failed state, restart vlan disc */
- if (printk_ratelimit())
- FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
- "Start VLAN Discovery\n");
- fnic_event_enq(fnic, FNIC_EVT_START_VLAN_DISC);
- break;
- case FIP_VLAN_SENT:
- if (vlan->sol_count >= FCOE_CTLR_MAX_SOL) {
- /*
- * no response on this vlan, remove from the list.
- * Try the next vlan
- */
- shost_printk(KERN_INFO, fnic->lport->host,
- "Dequeue this VLAN ID %d from list\n",
- vlan->vid);
- list_del(&vlan->list);
- kfree(vlan);
- vlan = NULL;
- if (list_empty(&fnic->vlans)) {
- /* we exhausted all vlans, restart vlan disc */
- spin_unlock_irqrestore(&fnic->vlans_lock,
- flags);
- shost_printk(KERN_INFO, fnic->lport->host,
- "fip_timer: vlan list empty, "
- "trigger vlan disc\n");
- fnic_event_enq(fnic, FNIC_EVT_START_VLAN_DISC);
- return;
- }
- /* check the next vlan */
- vlan = list_first_entry(&fnic->vlans, struct fcoe_vlan,
- list);
- fnic->set_vlan(fnic, vlan->vid);
- vlan->state = FIP_VLAN_SENT; /* sent now */
- }
- spin_unlock_irqrestore(&fnic->vlans_lock, flags);
- atomic64_inc(&fnic_stats->vlan_stats.sol_expiry_count);
- vlan->sol_count++;
- sol_time = jiffies + msecs_to_jiffies
- (FCOE_CTLR_START_DELAY);
- mod_timer(&fnic->fip_timer, round_jiffies(sol_time));
- break;
- }
- }
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