Commit | Line | Data |
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e6550b3e | 1 | // SPDX-License-Identifier: GPL-2.0-only |
5df6d737 AJ |
2 | /* |
3 | * Copyright 2008 Cisco Systems, Inc. All rights reserved. | |
4 | * Copyright 2007 Nuova Systems, Inc. All rights reserved. | |
5df6d737 AJ |
5 | */ |
6 | #include <linux/errno.h> | |
7 | #include <linux/pci.h> | |
5a0e3ad6 | 8 | #include <linux/slab.h> |
5df6d737 AJ |
9 | #include <linux/skbuff.h> |
10 | #include <linux/interrupt.h> | |
11 | #include <linux/spinlock.h> | |
12 | #include <linux/if_ether.h> | |
13 | #include <linux/if_vlan.h> | |
14 | #include <linux/workqueue.h> | |
78112e55 | 15 | #include <scsi/fc/fc_fip.h> |
5df6d737 AJ |
16 | #include <scsi/fc/fc_els.h> |
17 | #include <scsi/fc/fc_fcoe.h> | |
18 | #include <scsi/fc_frame.h> | |
19 | #include <scsi/libfc.h> | |
20 | #include "fnic_io.h" | |
21 | #include "fnic.h" | |
d3c995f1 | 22 | #include "fnic_fip.h" |
5df6d737 AJ |
23 | #include "cq_enet_desc.h" |
24 | #include "cq_exch_desc.h" | |
25 | ||
86001f24 | 26 | static u8 fcoe_all_fcfs[ETH_ALEN] = FIP_ALL_FCF_MACS; |
d3c995f1 | 27 | struct workqueue_struct *fnic_fip_queue; |
5df6d737 AJ |
28 | struct workqueue_struct *fnic_event_queue; |
29 | ||
78112e55 | 30 | static void fnic_set_eth_mode(struct fnic *); |
d3c995f1 HP |
31 | static void fnic_fcoe_send_vlan_req(struct fnic *fnic); |
32 | static void fnic_fcoe_start_fcf_disc(struct fnic *fnic); | |
33 | static void fnic_fcoe_process_vlan_resp(struct fnic *fnic, struct sk_buff *); | |
34 | static int fnic_fcoe_vlan_check(struct fnic *fnic, u16 flag); | |
35 | static int fnic_fcoe_handle_fip_frame(struct fnic *fnic, struct sk_buff *skb); | |
78112e55 | 36 | |
5df6d737 AJ |
37 | void fnic_handle_link(struct work_struct *work) |
38 | { | |
39 | struct fnic *fnic = container_of(work, struct fnic, link_work); | |
40 | unsigned long flags; | |
41 | int old_link_status; | |
42 | u32 old_link_down_cnt; | |
90302e95 | 43 | u64 old_port_speed, new_port_speed; |
5df6d737 AJ |
44 | |
45 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
46 | ||
f9e2beb9 KTK |
47 | fnic->link_events = 1; /* less work to just set everytime*/ |
48 | ||
5df6d737 AJ |
49 | if (fnic->stop_rx_link_events) { |
50 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
51 | return; | |
52 | } | |
53 | ||
54 | old_link_down_cnt = fnic->link_down_cnt; | |
55 | old_link_status = fnic->link_status; | |
90302e95 JP |
56 | old_port_speed = atomic64_read( |
57 | &fnic->fnic_stats.misc_stats.current_port_speed); | |
58 | ||
5df6d737 AJ |
59 | fnic->link_status = vnic_dev_link_status(fnic->vdev); |
60 | fnic->link_down_cnt = vnic_dev_link_down_cnt(fnic->vdev); | |
61 | ||
90302e95 | 62 | new_port_speed = vnic_dev_port_speed(fnic->vdev); |
d948e638 | 63 | atomic64_set(&fnic->fnic_stats.misc_stats.current_port_speed, |
90302e95 JP |
64 | new_port_speed); |
65 | if (old_port_speed != new_port_speed) | |
875d4eda | 66 | FNIC_MAIN_DBG(KERN_INFO, fnic->lport->host, |
90302e95 JP |
67 | "Current vnic speed set to : %llu\n", |
68 | new_port_speed); | |
d948e638 | 69 | |
c22fa50b SK |
70 | switch (vnic_dev_port_speed(fnic->vdev)) { |
71 | case DCEM_PORTSPEED_10G: | |
72 | fc_host_speed(fnic->lport->host) = FC_PORTSPEED_10GBIT; | |
73 | fnic->lport->link_supported_speeds = FC_PORTSPEED_10GBIT; | |
74 | break; | |
c01461a6 SK |
75 | case DCEM_PORTSPEED_20G: |
76 | fc_host_speed(fnic->lport->host) = FC_PORTSPEED_20GBIT; | |
77 | fnic->lport->link_supported_speeds = FC_PORTSPEED_20GBIT; | |
78 | break; | |
c22fa50b SK |
79 | case DCEM_PORTSPEED_25G: |
80 | fc_host_speed(fnic->lport->host) = FC_PORTSPEED_25GBIT; | |
81 | fnic->lport->link_supported_speeds = FC_PORTSPEED_25GBIT; | |
82 | break; | |
83 | case DCEM_PORTSPEED_40G: | |
84 | case DCEM_PORTSPEED_4x10G: | |
85 | fc_host_speed(fnic->lport->host) = FC_PORTSPEED_40GBIT; | |
86 | fnic->lport->link_supported_speeds = FC_PORTSPEED_40GBIT; | |
87 | break; | |
88 | case DCEM_PORTSPEED_100G: | |
89 | fc_host_speed(fnic->lport->host) = FC_PORTSPEED_100GBIT; | |
90 | fnic->lport->link_supported_speeds = FC_PORTSPEED_100GBIT; | |
91 | break; | |
92 | default: | |
93 | fc_host_speed(fnic->lport->host) = FC_PORTSPEED_UNKNOWN; | |
94 | fnic->lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN; | |
95 | break; | |
96 | } | |
97 | ||
5df6d737 | 98 | if (old_link_status == fnic->link_status) { |
abb14148 | 99 | if (!fnic->link_status) { |
5df6d737 AJ |
100 | /* DOWN -> DOWN */ |
101 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
abb14148 HS |
102 | fnic_fc_trace_set_data(fnic->lport->host->host_no, |
103 | FNIC_FC_LE, "Link Status: DOWN->DOWN", | |
104 | strlen("Link Status: DOWN->DOWN")); | |
105 | } else { | |
5df6d737 AJ |
106 | if (old_link_down_cnt != fnic->link_down_cnt) { |
107 | /* UP -> DOWN -> UP */ | |
108 | fnic->lport->host_stats.link_failure_count++; | |
109 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
abb14148 HS |
110 | fnic_fc_trace_set_data( |
111 | fnic->lport->host->host_no, | |
112 | FNIC_FC_LE, | |
113 | "Link Status:UP_DOWN_UP", | |
114 | strlen("Link_Status:UP_DOWN_UP") | |
115 | ); | |
5df6d737 AJ |
116 | FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, |
117 | "link down\n"); | |
78112e55 | 118 | fcoe_ctlr_link_down(&fnic->ctlr); |
d3c995f1 HP |
119 | if (fnic->config.flags & VFCF_FIP_CAPABLE) { |
120 | /* start FCoE VLAN discovery */ | |
abb14148 HS |
121 | fnic_fc_trace_set_data( |
122 | fnic->lport->host->host_no, | |
123 | FNIC_FC_LE, | |
124 | "Link Status: UP_DOWN_UP_VLAN", | |
125 | strlen( | |
126 | "Link Status: UP_DOWN_UP_VLAN") | |
127 | ); | |
d3c995f1 HP |
128 | fnic_fcoe_send_vlan_req(fnic); |
129 | return; | |
130 | } | |
5df6d737 AJ |
131 | FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, |
132 | "link up\n"); | |
78112e55 | 133 | fcoe_ctlr_link_up(&fnic->ctlr); |
86001f24 | 134 | } else { |
5df6d737 AJ |
135 | /* UP -> UP */ |
136 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
abb14148 HS |
137 | fnic_fc_trace_set_data( |
138 | fnic->lport->host->host_no, FNIC_FC_LE, | |
139 | "Link Status: UP_UP", | |
140 | strlen("Link Status: UP_UP")); | |
86001f24 | 141 | } |
5df6d737 AJ |
142 | } |
143 | } else if (fnic->link_status) { | |
144 | /* DOWN -> UP */ | |
145 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
d3c995f1 HP |
146 | if (fnic->config.flags & VFCF_FIP_CAPABLE) { |
147 | /* start FCoE VLAN discovery */ | |
5ef104b7 JC |
148 | fnic_fc_trace_set_data(fnic->lport->host->host_no, |
149 | FNIC_FC_LE, "Link Status: DOWN_UP_VLAN", | |
150 | strlen("Link Status: DOWN_UP_VLAN")); | |
d3c995f1 | 151 | fnic_fcoe_send_vlan_req(fnic); |
5ef104b7 | 152 | |
d3c995f1 HP |
153 | return; |
154 | } | |
5ef104b7 | 155 | |
5df6d737 | 156 | FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "link up\n"); |
abb14148 | 157 | fnic_fc_trace_set_data(fnic->lport->host->host_no, FNIC_FC_LE, |
5ef104b7 | 158 | "Link Status: DOWN_UP", strlen("Link Status: DOWN_UP")); |
78112e55 | 159 | fcoe_ctlr_link_up(&fnic->ctlr); |
5df6d737 AJ |
160 | } else { |
161 | /* UP -> DOWN */ | |
162 | fnic->lport->host_stats.link_failure_count++; | |
163 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
164 | FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "link down\n"); | |
abb14148 HS |
165 | fnic_fc_trace_set_data( |
166 | fnic->lport->host->host_no, FNIC_FC_LE, | |
167 | "Link Status: UP_DOWN", | |
168 | strlen("Link Status: UP_DOWN")); | |
0ee7b871 HS |
169 | if (fnic->config.flags & VFCF_FIP_CAPABLE) { |
170 | FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, | |
171 | "deleting fip-timer during link-down\n"); | |
172 | del_timer_sync(&fnic->fip_timer); | |
173 | } | |
78112e55 | 174 | fcoe_ctlr_link_down(&fnic->ctlr); |
5df6d737 AJ |
175 | } |
176 | ||
177 | } | |
178 | ||
179 | /* | |
180 | * This function passes incoming fabric frames to libFC | |
181 | */ | |
182 | void fnic_handle_frame(struct work_struct *work) | |
183 | { | |
184 | struct fnic *fnic = container_of(work, struct fnic, frame_work); | |
185 | struct fc_lport *lp = fnic->lport; | |
186 | unsigned long flags; | |
187 | struct sk_buff *skb; | |
188 | struct fc_frame *fp; | |
189 | ||
190 | while ((skb = skb_dequeue(&fnic->frame_queue))) { | |
191 | ||
192 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
193 | if (fnic->stop_rx_link_events) { | |
194 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
195 | dev_kfree_skb(skb); | |
196 | return; | |
197 | } | |
198 | fp = (struct fc_frame *)skb; | |
78112e55 JE |
199 | |
200 | /* | |
201 | * If we're in a transitional state, just re-queue and return. | |
202 | * The queue will be serviced when we get to a stable state. | |
203 | */ | |
204 | if (fnic->state != FNIC_IN_FC_MODE && | |
205 | fnic->state != FNIC_IN_ETH_MODE) { | |
206 | skb_queue_head(&fnic->frame_queue, skb); | |
207 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
208 | return; | |
5df6d737 AJ |
209 | } |
210 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
211 | ||
52ff878c | 212 | fc_exch_recv(lp, fp); |
5df6d737 | 213 | } |
5df6d737 AJ |
214 | } |
215 | ||
d3c995f1 HP |
216 | void fnic_fcoe_evlist_free(struct fnic *fnic) |
217 | { | |
218 | struct fnic_event *fevt = NULL; | |
219 | struct fnic_event *next = NULL; | |
220 | unsigned long flags; | |
221 | ||
222 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
223 | if (list_empty(&fnic->evlist)) { | |
224 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
225 | return; | |
226 | } | |
227 | ||
228 | list_for_each_entry_safe(fevt, next, &fnic->evlist, list) { | |
229 | list_del(&fevt->list); | |
230 | kfree(fevt); | |
231 | } | |
232 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
233 | } | |
234 | ||
235 | void fnic_handle_event(struct work_struct *work) | |
236 | { | |
237 | struct fnic *fnic = container_of(work, struct fnic, event_work); | |
238 | struct fnic_event *fevt = NULL; | |
239 | struct fnic_event *next = NULL; | |
240 | unsigned long flags; | |
241 | ||
242 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
243 | if (list_empty(&fnic->evlist)) { | |
244 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
245 | return; | |
246 | } | |
247 | ||
248 | list_for_each_entry_safe(fevt, next, &fnic->evlist, list) { | |
249 | if (fnic->stop_rx_link_events) { | |
250 | list_del(&fevt->list); | |
251 | kfree(fevt); | |
252 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
253 | return; | |
254 | } | |
255 | /* | |
256 | * If we're in a transitional state, just re-queue and return. | |
257 | * The queue will be serviced when we get to a stable state. | |
258 | */ | |
259 | if (fnic->state != FNIC_IN_FC_MODE && | |
260 | fnic->state != FNIC_IN_ETH_MODE) { | |
261 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
262 | return; | |
263 | } | |
264 | ||
265 | list_del(&fevt->list); | |
266 | switch (fevt->event) { | |
267 | case FNIC_EVT_START_VLAN_DISC: | |
268 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
269 | fnic_fcoe_send_vlan_req(fnic); | |
270 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
271 | break; | |
272 | case FNIC_EVT_START_FCF_DISC: | |
273 | FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, | |
274 | "Start FCF Discovery\n"); | |
275 | fnic_fcoe_start_fcf_disc(fnic); | |
276 | break; | |
277 | default: | |
278 | FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, | |
279 | "Unknown event 0x%x\n", fevt->event); | |
280 | break; | |
281 | } | |
282 | kfree(fevt); | |
283 | } | |
284 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
285 | } | |
286 | ||
287 | /** | |
2efd8631 | 288 | * is_fnic_fip_flogi_reject() - Check if the Received FIP FLOGI frame is rejected |
d3c995f1 HP |
289 | * @fip: The FCoE controller that received the frame |
290 | * @skb: The received FIP frame | |
291 | * | |
292 | * Returns non-zero if the frame is rejected with unsupported cmd with | |
293 | * insufficient resource els explanation. | |
294 | */ | |
295 | static inline int is_fnic_fip_flogi_reject(struct fcoe_ctlr *fip, | |
296 | struct sk_buff *skb) | |
297 | { | |
298 | struct fc_lport *lport = fip->lp; | |
299 | struct fip_header *fiph; | |
300 | struct fc_frame_header *fh = NULL; | |
301 | struct fip_desc *desc; | |
302 | struct fip_encaps *els; | |
d3c995f1 HP |
303 | u16 op; |
304 | u8 els_op; | |
305 | u8 sub; | |
306 | ||
d3c995f1 HP |
307 | size_t rlen; |
308 | size_t dlen = 0; | |
309 | ||
310 | if (skb_linearize(skb)) | |
311 | return 0; | |
312 | ||
313 | if (skb->len < sizeof(*fiph)) | |
314 | return 0; | |
315 | ||
316 | fiph = (struct fip_header *)skb->data; | |
317 | op = ntohs(fiph->fip_op); | |
318 | sub = fiph->fip_subcode; | |
319 | ||
320 | if (op != FIP_OP_LS) | |
321 | return 0; | |
322 | ||
323 | if (sub != FIP_SC_REP) | |
324 | return 0; | |
325 | ||
326 | rlen = ntohs(fiph->fip_dl_len) * 4; | |
327 | if (rlen + sizeof(*fiph) > skb->len) | |
328 | return 0; | |
329 | ||
330 | desc = (struct fip_desc *)(fiph + 1); | |
331 | dlen = desc->fip_dlen * FIP_BPW; | |
332 | ||
333 | if (desc->fip_dtype == FIP_DT_FLOGI) { | |
334 | ||
d3c995f1 HP |
335 | if (dlen < sizeof(*els) + sizeof(*fh) + 1) |
336 | return 0; | |
337 | ||
d3c995f1 HP |
338 | els = (struct fip_encaps *)desc; |
339 | fh = (struct fc_frame_header *)(els + 1); | |
d3c995f1 HP |
340 | |
341 | if (!fh) | |
342 | return 0; | |
343 | ||
344 | /* | |
345 | * ELS command code, reason and explanation should be = Reject, | |
346 | * unsupported command and insufficient resource | |
347 | */ | |
348 | els_op = *(u8 *)(fh + 1); | |
349 | if (els_op == ELS_LS_RJT) { | |
350 | shost_printk(KERN_INFO, lport->host, | |
351 | "Flogi Request Rejected by Switch\n"); | |
352 | return 1; | |
353 | } | |
354 | shost_printk(KERN_INFO, lport->host, | |
355 | "Flogi Request Accepted by Switch\n"); | |
356 | } | |
357 | return 0; | |
358 | } | |
359 | ||
360 | static void fnic_fcoe_send_vlan_req(struct fnic *fnic) | |
361 | { | |
362 | struct fcoe_ctlr *fip = &fnic->ctlr; | |
67125b02 | 363 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
d3c995f1 HP |
364 | struct sk_buff *skb; |
365 | char *eth_fr; | |
d3c995f1 HP |
366 | struct fip_vlan *vlan; |
367 | u64 vlan_tov; | |
368 | ||
369 | fnic_fcoe_reset_vlans(fnic); | |
370 | fnic->set_vlan(fnic, 0); | |
b43abcbb SK |
371 | |
372 | if (printk_ratelimit()) | |
373 | FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, | |
374 | "Sending VLAN request...\n"); | |
375 | ||
d3c995f1 HP |
376 | skb = dev_alloc_skb(sizeof(struct fip_vlan)); |
377 | if (!skb) | |
378 | return; | |
379 | ||
d3c995f1 HP |
380 | eth_fr = (char *)skb->data; |
381 | vlan = (struct fip_vlan *)eth_fr; | |
382 | ||
383 | memset(vlan, 0, sizeof(*vlan)); | |
384 | memcpy(vlan->eth.h_source, fip->ctl_src_addr, ETH_ALEN); | |
385 | memcpy(vlan->eth.h_dest, fcoe_all_fcfs, ETH_ALEN); | |
386 | vlan->eth.h_proto = htons(ETH_P_FIP); | |
387 | ||
388 | vlan->fip.fip_ver = FIP_VER_ENCAPS(FIP_VER); | |
389 | vlan->fip.fip_op = htons(FIP_OP_VLAN); | |
b8e1aa3c | 390 | vlan->fip.fip_subcode = FIP_SC_VL_REQ; |
d3c995f1 HP |
391 | vlan->fip.fip_dl_len = htons(sizeof(vlan->desc) / FIP_BPW); |
392 | ||
393 | vlan->desc.mac.fd_desc.fip_dtype = FIP_DT_MAC; | |
394 | vlan->desc.mac.fd_desc.fip_dlen = sizeof(vlan->desc.mac) / FIP_BPW; | |
395 | memcpy(&vlan->desc.mac.fd_mac, fip->ctl_src_addr, ETH_ALEN); | |
396 | ||
397 | vlan->desc.wwnn.fd_desc.fip_dtype = FIP_DT_NAME; | |
398 | vlan->desc.wwnn.fd_desc.fip_dlen = sizeof(vlan->desc.wwnn) / FIP_BPW; | |
399 | put_unaligned_be64(fip->lp->wwnn, &vlan->desc.wwnn.fd_wwn); | |
67125b02 | 400 | atomic64_inc(&fnic_stats->vlan_stats.vlan_disc_reqs); |
d3c995f1 HP |
401 | |
402 | skb_put(skb, sizeof(*vlan)); | |
403 | skb->protocol = htons(ETH_P_FIP); | |
404 | skb_reset_mac_header(skb); | |
405 | skb_reset_network_header(skb); | |
406 | fip->send(fip, skb); | |
407 | ||
408 | /* set a timer so that we can retry if there no response */ | |
409 | vlan_tov = jiffies + msecs_to_jiffies(FCOE_CTLR_FIPVLAN_TOV); | |
410 | mod_timer(&fnic->fip_timer, round_jiffies(vlan_tov)); | |
411 | } | |
412 | ||
413 | static void fnic_fcoe_process_vlan_resp(struct fnic *fnic, struct sk_buff *skb) | |
414 | { | |
415 | struct fcoe_ctlr *fip = &fnic->ctlr; | |
416 | struct fip_header *fiph; | |
417 | struct fip_desc *desc; | |
67125b02 | 418 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
d3c995f1 HP |
419 | u16 vid; |
420 | size_t rlen; | |
421 | size_t dlen; | |
422 | struct fcoe_vlan *vlan; | |
423 | u64 sol_time; | |
424 | unsigned long flags; | |
425 | ||
426 | FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, | |
427 | "Received VLAN response...\n"); | |
428 | ||
429 | fiph = (struct fip_header *) skb->data; | |
430 | ||
431 | FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, | |
432 | "Received VLAN response... OP 0x%x SUB_OP 0x%x\n", | |
433 | ntohs(fiph->fip_op), fiph->fip_subcode); | |
434 | ||
435 | rlen = ntohs(fiph->fip_dl_len) * 4; | |
436 | fnic_fcoe_reset_vlans(fnic); | |
437 | spin_lock_irqsave(&fnic->vlans_lock, flags); | |
438 | desc = (struct fip_desc *)(fiph + 1); | |
439 | while (rlen > 0) { | |
440 | dlen = desc->fip_dlen * FIP_BPW; | |
441 | switch (desc->fip_dtype) { | |
442 | case FIP_DT_VLAN: | |
443 | vid = ntohs(((struct fip_vlan_desc *)desc)->fd_vlan); | |
444 | shost_printk(KERN_INFO, fnic->lport->host, | |
445 | "process_vlan_resp: FIP VLAN %d\n", vid); | |
dbc1ebe7 | 446 | vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC); |
d3c995f1 HP |
447 | if (!vlan) { |
448 | /* retry from timer */ | |
449 | spin_unlock_irqrestore(&fnic->vlans_lock, | |
450 | flags); | |
451 | goto out; | |
452 | } | |
d3c995f1 HP |
453 | vlan->vid = vid & 0x0fff; |
454 | vlan->state = FIP_VLAN_AVAIL; | |
455 | list_add_tail(&vlan->list, &fnic->vlans); | |
456 | break; | |
457 | } | |
458 | desc = (struct fip_desc *)((char *)desc + dlen); | |
459 | rlen -= dlen; | |
460 | } | |
461 | ||
462 | /* any VLAN descriptors present ? */ | |
463 | if (list_empty(&fnic->vlans)) { | |
464 | /* retry from timer */ | |
67125b02 | 465 | atomic64_inc(&fnic_stats->vlan_stats.resp_withno_vlanID); |
d3c995f1 HP |
466 | FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, |
467 | "No VLAN descriptors in FIP VLAN response\n"); | |
468 | spin_unlock_irqrestore(&fnic->vlans_lock, flags); | |
469 | goto out; | |
470 | } | |
471 | ||
472 | vlan = list_first_entry(&fnic->vlans, struct fcoe_vlan, list); | |
473 | fnic->set_vlan(fnic, vlan->vid); | |
474 | vlan->state = FIP_VLAN_SENT; /* sent now */ | |
475 | vlan->sol_count++; | |
476 | spin_unlock_irqrestore(&fnic->vlans_lock, flags); | |
477 | ||
478 | /* start the solicitation */ | |
479 | fcoe_ctlr_link_up(fip); | |
480 | ||
481 | sol_time = jiffies + msecs_to_jiffies(FCOE_CTLR_START_DELAY); | |
482 | mod_timer(&fnic->fip_timer, round_jiffies(sol_time)); | |
483 | out: | |
484 | return; | |
485 | } | |
486 | ||
487 | static void fnic_fcoe_start_fcf_disc(struct fnic *fnic) | |
488 | { | |
489 | unsigned long flags; | |
490 | struct fcoe_vlan *vlan; | |
491 | u64 sol_time; | |
492 | ||
493 | spin_lock_irqsave(&fnic->vlans_lock, flags); | |
494 | vlan = list_first_entry(&fnic->vlans, struct fcoe_vlan, list); | |
495 | fnic->set_vlan(fnic, vlan->vid); | |
496 | vlan->state = FIP_VLAN_SENT; /* sent now */ | |
497 | vlan->sol_count = 1; | |
498 | spin_unlock_irqrestore(&fnic->vlans_lock, flags); | |
499 | ||
500 | /* start the solicitation */ | |
501 | fcoe_ctlr_link_up(&fnic->ctlr); | |
502 | ||
503 | sol_time = jiffies + msecs_to_jiffies(FCOE_CTLR_START_DELAY); | |
504 | mod_timer(&fnic->fip_timer, round_jiffies(sol_time)); | |
505 | } | |
506 | ||
507 | static int fnic_fcoe_vlan_check(struct fnic *fnic, u16 flag) | |
508 | { | |
509 | unsigned long flags; | |
510 | struct fcoe_vlan *fvlan; | |
511 | ||
512 | spin_lock_irqsave(&fnic->vlans_lock, flags); | |
513 | if (list_empty(&fnic->vlans)) { | |
514 | spin_unlock_irqrestore(&fnic->vlans_lock, flags); | |
515 | return -EINVAL; | |
516 | } | |
517 | ||
518 | fvlan = list_first_entry(&fnic->vlans, struct fcoe_vlan, list); | |
519 | if (fvlan->state == FIP_VLAN_USED) { | |
520 | spin_unlock_irqrestore(&fnic->vlans_lock, flags); | |
521 | return 0; | |
522 | } | |
523 | ||
524 | if (fvlan->state == FIP_VLAN_SENT) { | |
525 | fvlan->state = FIP_VLAN_USED; | |
526 | spin_unlock_irqrestore(&fnic->vlans_lock, flags); | |
527 | return 0; | |
528 | } | |
529 | spin_unlock_irqrestore(&fnic->vlans_lock, flags); | |
530 | return -EINVAL; | |
531 | } | |
532 | ||
533 | static void fnic_event_enq(struct fnic *fnic, enum fnic_evt ev) | |
534 | { | |
535 | struct fnic_event *fevt; | |
536 | unsigned long flags; | |
537 | ||
538 | fevt = kmalloc(sizeof(*fevt), GFP_ATOMIC); | |
539 | if (!fevt) | |
540 | return; | |
541 | ||
542 | fevt->fnic = fnic; | |
543 | fevt->event = ev; | |
544 | ||
545 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
546 | list_add_tail(&fevt->list, &fnic->evlist); | |
547 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
548 | ||
549 | schedule_work(&fnic->event_work); | |
550 | } | |
551 | ||
552 | static int fnic_fcoe_handle_fip_frame(struct fnic *fnic, struct sk_buff *skb) | |
553 | { | |
554 | struct fip_header *fiph; | |
555 | int ret = 1; | |
556 | u16 op; | |
557 | u8 sub; | |
558 | ||
559 | if (!skb || !(skb->data)) | |
560 | return -1; | |
561 | ||
562 | if (skb_linearize(skb)) | |
563 | goto drop; | |
564 | ||
565 | fiph = (struct fip_header *)skb->data; | |
566 | op = ntohs(fiph->fip_op); | |
567 | sub = fiph->fip_subcode; | |
568 | ||
569 | if (FIP_VER_DECAPS(fiph->fip_ver) != FIP_VER) | |
570 | goto drop; | |
571 | ||
572 | if (ntohs(fiph->fip_dl_len) * FIP_BPW + sizeof(*fiph) > skb->len) | |
573 | goto drop; | |
574 | ||
575 | if (op == FIP_OP_DISC && sub == FIP_SC_ADV) { | |
576 | if (fnic_fcoe_vlan_check(fnic, ntohs(fiph->fip_flags))) | |
577 | goto drop; | |
578 | /* pass it on to fcoe */ | |
579 | ret = 1; | |
6a551c11 | 580 | } else if (op == FIP_OP_VLAN && sub == FIP_SC_VL_NOTE) { |
d3c995f1 HP |
581 | /* set the vlan as used */ |
582 | fnic_fcoe_process_vlan_resp(fnic, skb); | |
583 | ret = 0; | |
584 | } else if (op == FIP_OP_CTRL && sub == FIP_SC_CLR_VLINK) { | |
585 | /* received CVL request, restart vlan disc */ | |
586 | fnic_event_enq(fnic, FNIC_EVT_START_VLAN_DISC); | |
587 | /* pass it on to fcoe */ | |
588 | ret = 1; | |
589 | } | |
590 | drop: | |
591 | return ret; | |
592 | } | |
593 | ||
594 | void fnic_handle_fip_frame(struct work_struct *work) | |
595 | { | |
596 | struct fnic *fnic = container_of(work, struct fnic, fip_frame_work); | |
67125b02 | 597 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
d3c995f1 HP |
598 | unsigned long flags; |
599 | struct sk_buff *skb; | |
600 | struct ethhdr *eh; | |
601 | ||
602 | while ((skb = skb_dequeue(&fnic->fip_frame_queue))) { | |
603 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
604 | if (fnic->stop_rx_link_events) { | |
605 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
606 | dev_kfree_skb(skb); | |
607 | return; | |
608 | } | |
609 | /* | |
610 | * If we're in a transitional state, just re-queue and return. | |
611 | * The queue will be serviced when we get to a stable state. | |
612 | */ | |
613 | if (fnic->state != FNIC_IN_FC_MODE && | |
614 | fnic->state != FNIC_IN_ETH_MODE) { | |
615 | skb_queue_head(&fnic->fip_frame_queue, skb); | |
616 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
617 | return; | |
618 | } | |
619 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
620 | eh = (struct ethhdr *)skb->data; | |
621 | if (eh->h_proto == htons(ETH_P_FIP)) { | |
622 | skb_pull(skb, sizeof(*eh)); | |
623 | if (fnic_fcoe_handle_fip_frame(fnic, skb) <= 0) { | |
624 | dev_kfree_skb(skb); | |
625 | continue; | |
626 | } | |
627 | /* | |
628 | * If there's FLOGI rejects - clear all | |
629 | * fcf's & restart from scratch | |
630 | */ | |
631 | if (is_fnic_fip_flogi_reject(&fnic->ctlr, skb)) { | |
67125b02 HP |
632 | atomic64_inc( |
633 | &fnic_stats->vlan_stats.flogi_rejects); | |
d3c995f1 HP |
634 | shost_printk(KERN_INFO, fnic->lport->host, |
635 | "Trigger a Link down - VLAN Disc\n"); | |
636 | fcoe_ctlr_link_down(&fnic->ctlr); | |
637 | /* start FCoE VLAN discovery */ | |
638 | fnic_fcoe_send_vlan_req(fnic); | |
639 | dev_kfree_skb(skb); | |
640 | continue; | |
641 | } | |
642 | fcoe_ctlr_recv(&fnic->ctlr, skb); | |
643 | continue; | |
644 | } | |
645 | } | |
646 | } | |
647 | ||
78112e55 JE |
648 | /** |
649 | * fnic_import_rq_eth_pkt() - handle received FCoE or FIP frame. | |
650 | * @fnic: fnic instance. | |
651 | * @skb: Ethernet Frame. | |
652 | */ | |
653 | static inline int fnic_import_rq_eth_pkt(struct fnic *fnic, struct sk_buff *skb) | |
5df6d737 AJ |
654 | { |
655 | struct fc_frame *fp; | |
656 | struct ethhdr *eh; | |
5df6d737 AJ |
657 | struct fcoe_hdr *fcoe_hdr; |
658 | struct fcoe_crc_eof *ft; | |
5df6d737 | 659 | |
78112e55 JE |
660 | /* |
661 | * Undo VLAN encapsulation if present. | |
662 | */ | |
5df6d737 | 663 | eh = (struct ethhdr *)skb->data; |
78112e55 JE |
664 | if (eh->h_proto == htons(ETH_P_8021Q)) { |
665 | memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); | |
af72868b | 666 | eh = skb_pull(skb, VLAN_HLEN); |
78112e55 JE |
667 | skb_reset_mac_header(skb); |
668 | } | |
669 | if (eh->h_proto == htons(ETH_P_FIP)) { | |
d7fadce3 HP |
670 | if (!(fnic->config.flags & VFCF_FIP_CAPABLE)) { |
671 | printk(KERN_ERR "Dropped FIP frame, as firmware " | |
672 | "uses non-FIP mode, Enable FIP " | |
673 | "using UCSM\n"); | |
674 | goto drop; | |
675 | } | |
abb14148 HS |
676 | if ((fnic_fc_trace_set_data(fnic->lport->host->host_no, |
677 | FNIC_FC_RECV|0x80, (char *)skb->data, skb->len)) != 0) { | |
678 | printk(KERN_ERR "fnic ctlr frame trace error!!!"); | |
679 | } | |
d3c995f1 HP |
680 | skb_queue_tail(&fnic->fip_frame_queue, skb); |
681 | queue_work(fnic_fip_queue, &fnic->fip_frame_work); | |
78112e55 JE |
682 | return 1; /* let caller know packet was used */ |
683 | } | |
684 | if (eh->h_proto != htons(ETH_P_FCOE)) | |
685 | goto drop; | |
686 | skb_set_network_header(skb, sizeof(*eh)); | |
687 | skb_pull(skb, sizeof(*eh)); | |
5df6d737 AJ |
688 | |
689 | fcoe_hdr = (struct fcoe_hdr *)skb->data; | |
690 | if (FC_FCOE_DECAPS_VER(fcoe_hdr) != FC_FCOE_VER) | |
78112e55 | 691 | goto drop; |
5df6d737 AJ |
692 | |
693 | fp = (struct fc_frame *)skb; | |
694 | fc_frame_init(fp); | |
695 | fr_sof(fp) = fcoe_hdr->fcoe_sof; | |
696 | skb_pull(skb, sizeof(struct fcoe_hdr)); | |
78112e55 | 697 | skb_reset_transport_header(skb); |
5df6d737 | 698 | |
78112e55 | 699 | ft = (struct fcoe_crc_eof *)(skb->data + skb->len - sizeof(*ft)); |
5df6d737 | 700 | fr_eof(fp) = ft->fcoe_eof; |
78112e55 | 701 | skb_trim(skb, skb->len - sizeof(*ft)); |
5df6d737 | 702 | return 0; |
78112e55 JE |
703 | drop: |
704 | dev_kfree_skb_irq(skb); | |
705 | return -1; | |
5df6d737 AJ |
706 | } |
707 | ||
78112e55 JE |
708 | /** |
709 | * fnic_update_mac_locked() - set data MAC address and filters. | |
710 | * @fnic: fnic instance. | |
711 | * @new: newly-assigned FCoE MAC address. | |
712 | * | |
713 | * Called with the fnic lock held. | |
714 | */ | |
715 | void fnic_update_mac_locked(struct fnic *fnic, u8 *new) | |
5df6d737 | 716 | { |
78112e55 JE |
717 | u8 *ctl = fnic->ctlr.ctl_src_addr; |
718 | u8 *data = fnic->data_src_addr; | |
5df6d737 | 719 | |
78112e55 JE |
720 | if (is_zero_ether_addr(new)) |
721 | new = ctl; | |
6942df7f | 722 | if (ether_addr_equal(data, new)) |
78112e55 JE |
723 | return; |
724 | FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "update_mac %pM\n", new); | |
6942df7f | 725 | if (!is_zero_ether_addr(data) && !ether_addr_equal(data, ctl)) |
78112e55 JE |
726 | vnic_dev_del_addr(fnic->vdev, data); |
727 | memcpy(data, new, ETH_ALEN); | |
6942df7f | 728 | if (!ether_addr_equal(new, ctl)) |
78112e55 JE |
729 | vnic_dev_add_addr(fnic->vdev, new); |
730 | } | |
5df6d737 | 731 | |
78112e55 JE |
732 | /** |
733 | * fnic_update_mac() - set data MAC address and filters. | |
734 | * @lport: local port. | |
735 | * @new: newly-assigned FCoE MAC address. | |
736 | */ | |
737 | void fnic_update_mac(struct fc_lport *lport, u8 *new) | |
738 | { | |
739 | struct fnic *fnic = lport_priv(lport); | |
5df6d737 | 740 | |
78112e55 JE |
741 | spin_lock_irq(&fnic->fnic_lock); |
742 | fnic_update_mac_locked(fnic, new); | |
743 | spin_unlock_irq(&fnic->fnic_lock); | |
744 | } | |
5df6d737 | 745 | |
78112e55 JE |
746 | /** |
747 | * fnic_set_port_id() - set the port_ID after successful FLOGI. | |
748 | * @lport: local port. | |
749 | * @port_id: assigned FC_ID. | |
750 | * @fp: received frame containing the FLOGI accept or NULL. | |
751 | * | |
752 | * This is called from libfc when a new FC_ID has been assigned. | |
753 | * This causes us to reset the firmware to FC_MODE and setup the new MAC | |
754 | * address and FC_ID. | |
755 | * | |
756 | * It is also called with FC_ID 0 when we're logged off. | |
757 | * | |
758 | * If the FC_ID is due to point-to-point, fp may be NULL. | |
759 | */ | |
760 | void fnic_set_port_id(struct fc_lport *lport, u32 port_id, struct fc_frame *fp) | |
761 | { | |
762 | struct fnic *fnic = lport_priv(lport); | |
763 | u8 *mac; | |
764 | int ret; | |
5df6d737 | 765 | |
78112e55 JE |
766 | FNIC_FCS_DBG(KERN_DEBUG, lport->host, "set port_id %x fp %p\n", |
767 | port_id, fp); | |
5df6d737 | 768 | |
78112e55 JE |
769 | /* |
770 | * If we're clearing the FC_ID, change to use the ctl_src_addr. | |
771 | * Set ethernet mode to send FLOGI. | |
772 | */ | |
773 | if (!port_id) { | |
774 | fnic_update_mac(lport, fnic->ctlr.ctl_src_addr); | |
775 | fnic_set_eth_mode(fnic); | |
776 | return; | |
777 | } | |
5df6d737 | 778 | |
78112e55 JE |
779 | if (fp) { |
780 | mac = fr_cb(fp)->granted_mac; | |
781 | if (is_zero_ether_addr(mac)) { | |
782 | /* non-FIP - FLOGI already accepted - ignore return */ | |
783 | fcoe_ctlr_recv_flogi(&fnic->ctlr, lport, fp); | |
5df6d737 | 784 | } |
78112e55 JE |
785 | fnic_update_mac(lport, mac); |
786 | } | |
5df6d737 | 787 | |
78112e55 JE |
788 | /* Change state to reflect transition to FC mode */ |
789 | spin_lock_irq(&fnic->fnic_lock); | |
790 | if (fnic->state == FNIC_IN_ETH_MODE || fnic->state == FNIC_IN_FC_MODE) | |
5df6d737 | 791 | fnic->state = FNIC_IN_ETH_TRANS_FC_MODE; |
78112e55 | 792 | else { |
5df6d737 AJ |
793 | FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, |
794 | "Unexpected fnic state %s while" | |
795 | " processing flogi resp\n", | |
796 | fnic_state_to_str(fnic->state)); | |
78112e55 JE |
797 | spin_unlock_irq(&fnic->fnic_lock); |
798 | return; | |
5df6d737 | 799 | } |
78112e55 | 800 | spin_unlock_irq(&fnic->fnic_lock); |
5df6d737 AJ |
801 | |
802 | /* | |
78112e55 JE |
803 | * Send FLOGI registration to firmware to set up FC mode. |
804 | * The new address will be set up when registration completes. | |
5df6d737 | 805 | */ |
78112e55 | 806 | ret = fnic_flogi_reg_handler(fnic, port_id); |
5df6d737 AJ |
807 | |
808 | if (ret < 0) { | |
78112e55 | 809 | spin_lock_irq(&fnic->fnic_lock); |
5df6d737 AJ |
810 | if (fnic->state == FNIC_IN_ETH_TRANS_FC_MODE) |
811 | fnic->state = FNIC_IN_ETH_MODE; | |
78112e55 | 812 | spin_unlock_irq(&fnic->fnic_lock); |
5df6d737 | 813 | } |
5df6d737 AJ |
814 | } |
815 | ||
816 | static void fnic_rq_cmpl_frame_recv(struct vnic_rq *rq, struct cq_desc | |
817 | *cq_desc, struct vnic_rq_buf *buf, | |
818 | int skipped __attribute__((unused)), | |
819 | void *opaque) | |
820 | { | |
821 | struct fnic *fnic = vnic_dev_priv(rq->vdev); | |
822 | struct sk_buff *skb; | |
823 | struct fc_frame *fp; | |
67125b02 | 824 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
5df6d737 AJ |
825 | u8 type, color, eop, sop, ingress_port, vlan_stripped; |
826 | u8 fcoe = 0, fcoe_sof, fcoe_eof; | |
827 | u8 fcoe_fc_crc_ok = 1, fcoe_enc_error = 0; | |
828 | u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok; | |
829 | u8 ipv6, ipv4, ipv4_fragment, rss_type, csum_not_calc; | |
830 | u8 fcs_ok = 1, packet_error = 0; | |
831 | u16 q_number, completed_index, bytes_written = 0, vlan, checksum; | |
832 | u32 rss_hash; | |
833 | u16 exchange_id, tmpl; | |
834 | u8 sof = 0; | |
835 | u8 eof = 0; | |
836 | u32 fcp_bytes_written = 0; | |
837 | unsigned long flags; | |
838 | ||
7f9b0f77 CH |
839 | dma_unmap_single(&fnic->pdev->dev, buf->dma_addr, buf->len, |
840 | DMA_FROM_DEVICE); | |
5df6d737 | 841 | skb = buf->os_buf; |
78112e55 | 842 | fp = (struct fc_frame *)skb; |
5df6d737 AJ |
843 | buf->os_buf = NULL; |
844 | ||
845 | cq_desc_dec(cq_desc, &type, &color, &q_number, &completed_index); | |
846 | if (type == CQ_DESC_TYPE_RQ_FCP) { | |
847 | cq_fcp_rq_desc_dec((struct cq_fcp_rq_desc *)cq_desc, | |
848 | &type, &color, &q_number, &completed_index, | |
849 | &eop, &sop, &fcoe_fc_crc_ok, &exchange_id, | |
850 | &tmpl, &fcp_bytes_written, &sof, &eof, | |
851 | &ingress_port, &packet_error, | |
852 | &fcoe_enc_error, &fcs_ok, &vlan_stripped, | |
853 | &vlan); | |
78112e55 JE |
854 | skb_trim(skb, fcp_bytes_written); |
855 | fr_sof(fp) = sof; | |
856 | fr_eof(fp) = eof; | |
5df6d737 AJ |
857 | |
858 | } else if (type == CQ_DESC_TYPE_RQ_ENET) { | |
859 | cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc, | |
860 | &type, &color, &q_number, &completed_index, | |
861 | &ingress_port, &fcoe, &eop, &sop, | |
862 | &rss_type, &csum_not_calc, &rss_hash, | |
863 | &bytes_written, &packet_error, | |
864 | &vlan_stripped, &vlan, &checksum, | |
865 | &fcoe_sof, &fcoe_fc_crc_ok, | |
866 | &fcoe_enc_error, &fcoe_eof, | |
867 | &tcp_udp_csum_ok, &udp, &tcp, | |
868 | &ipv4_csum_ok, &ipv6, &ipv4, | |
869 | &ipv4_fragment, &fcs_ok); | |
78112e55 JE |
870 | skb_trim(skb, bytes_written); |
871 | if (!fcs_ok) { | |
67125b02 | 872 | atomic64_inc(&fnic_stats->misc_stats.frame_errors); |
78112e55 JE |
873 | FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, |
874 | "fcs error. dropping packet.\n"); | |
875 | goto drop; | |
876 | } | |
877 | if (fnic_import_rq_eth_pkt(fnic, skb)) | |
878 | return; | |
5df6d737 AJ |
879 | |
880 | } else { | |
881 | /* wrong CQ type*/ | |
882 | shost_printk(KERN_ERR, fnic->lport->host, | |
883 | "fnic rq_cmpl wrong cq type x%x\n", type); | |
884 | goto drop; | |
885 | } | |
886 | ||
887 | if (!fcs_ok || packet_error || !fcoe_fc_crc_ok || fcoe_enc_error) { | |
67125b02 | 888 | atomic64_inc(&fnic_stats->misc_stats.frame_errors); |
5df6d737 AJ |
889 | FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, |
890 | "fnic rq_cmpl fcoe x%x fcsok x%x" | |
891 | " pkterr x%x fcoe_fc_crc_ok x%x, fcoe_enc_err" | |
892 | " x%x\n", | |
893 | fcoe, fcs_ok, packet_error, | |
894 | fcoe_fc_crc_ok, fcoe_enc_error); | |
895 | goto drop; | |
896 | } | |
897 | ||
5df6d737 AJ |
898 | spin_lock_irqsave(&fnic->fnic_lock, flags); |
899 | if (fnic->stop_rx_link_events) { | |
900 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
901 | goto drop; | |
902 | } | |
5df6d737 AJ |
903 | fr_dev(fp) = fnic->lport; |
904 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
abb14148 HS |
905 | if ((fnic_fc_trace_set_data(fnic->lport->host->host_no, FNIC_FC_RECV, |
906 | (char *)skb->data, skb->len)) != 0) { | |
907 | printk(KERN_ERR "fnic ctlr frame trace error!!!"); | |
908 | } | |
5df6d737 AJ |
909 | |
910 | skb_queue_tail(&fnic->frame_queue, skb); | |
911 | queue_work(fnic_event_queue, &fnic->frame_work); | |
912 | ||
913 | return; | |
914 | drop: | |
915 | dev_kfree_skb_irq(skb); | |
916 | } | |
917 | ||
918 | static int fnic_rq_cmpl_handler_cont(struct vnic_dev *vdev, | |
919 | struct cq_desc *cq_desc, u8 type, | |
920 | u16 q_number, u16 completed_index, | |
921 | void *opaque) | |
922 | { | |
923 | struct fnic *fnic = vnic_dev_priv(vdev); | |
924 | ||
925 | vnic_rq_service(&fnic->rq[q_number], cq_desc, completed_index, | |
926 | VNIC_RQ_RETURN_DESC, fnic_rq_cmpl_frame_recv, | |
927 | NULL); | |
928 | return 0; | |
929 | } | |
930 | ||
931 | int fnic_rq_cmpl_handler(struct fnic *fnic, int rq_work_to_do) | |
932 | { | |
933 | unsigned int tot_rq_work_done = 0, cur_work_done; | |
934 | unsigned int i; | |
935 | int err; | |
936 | ||
937 | for (i = 0; i < fnic->rq_count; i++) { | |
938 | cur_work_done = vnic_cq_service(&fnic->cq[i], rq_work_to_do, | |
939 | fnic_rq_cmpl_handler_cont, | |
940 | NULL); | |
941 | if (cur_work_done) { | |
942 | err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame); | |
943 | if (err) | |
944 | shost_printk(KERN_ERR, fnic->lport->host, | |
25985edc | 945 | "fnic_alloc_rq_frame can't alloc" |
5df6d737 AJ |
946 | " frame\n"); |
947 | } | |
948 | tot_rq_work_done += cur_work_done; | |
949 | } | |
950 | ||
951 | return tot_rq_work_done; | |
952 | } | |
953 | ||
954 | /* | |
955 | * This function is called once at init time to allocate and fill RQ | |
956 | * buffers. Subsequently, it is called in the interrupt context after RQ | |
957 | * buffer processing to replenish the buffers in the RQ | |
958 | */ | |
959 | int fnic_alloc_rq_frame(struct vnic_rq *rq) | |
960 | { | |
961 | struct fnic *fnic = vnic_dev_priv(rq->vdev); | |
962 | struct sk_buff *skb; | |
963 | u16 len; | |
964 | dma_addr_t pa; | |
fd6ddfa4 | 965 | int r; |
5df6d737 AJ |
966 | |
967 | len = FC_FRAME_HEADROOM + FC_MAX_FRAME + FC_FRAME_TAILROOM; | |
968 | skb = dev_alloc_skb(len); | |
969 | if (!skb) { | |
970 | FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, | |
971 | "Unable to allocate RQ sk_buff\n"); | |
972 | return -ENOMEM; | |
973 | } | |
974 | skb_reset_mac_header(skb); | |
975 | skb_reset_transport_header(skb); | |
976 | skb_reset_network_header(skb); | |
977 | skb_put(skb, len); | |
7f9b0f77 CH |
978 | pa = dma_map_single(&fnic->pdev->dev, skb->data, len, DMA_FROM_DEVICE); |
979 | if (dma_mapping_error(&fnic->pdev->dev, pa)) { | |
dd7328e4 | 980 | r = -ENOMEM; |
fd6ddfa4 ML |
981 | printk(KERN_ERR "PCI mapping failed with error %d\n", r); |
982 | goto free_skb; | |
983 | } | |
984 | ||
5df6d737 AJ |
985 | fnic_queue_rq_desc(rq, skb, pa, len); |
986 | return 0; | |
fd6ddfa4 ML |
987 | |
988 | free_skb: | |
989 | kfree_skb(skb); | |
990 | return r; | |
5df6d737 AJ |
991 | } |
992 | ||
993 | void fnic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf) | |
994 | { | |
995 | struct fc_frame *fp = buf->os_buf; | |
996 | struct fnic *fnic = vnic_dev_priv(rq->vdev); | |
997 | ||
7f9b0f77 CH |
998 | dma_unmap_single(&fnic->pdev->dev, buf->dma_addr, buf->len, |
999 | DMA_FROM_DEVICE); | |
5df6d737 AJ |
1000 | |
1001 | dev_kfree_skb(fp_skb(fp)); | |
1002 | buf->os_buf = NULL; | |
1003 | } | |
1004 | ||
78112e55 JE |
1005 | /** |
1006 | * fnic_eth_send() - Send Ethernet frame. | |
1007 | * @fip: fcoe_ctlr instance. | |
1008 | * @skb: Ethernet Frame, FIP, without VLAN encapsulation. | |
1009 | */ | |
1010 | void fnic_eth_send(struct fcoe_ctlr *fip, struct sk_buff *skb) | |
5df6d737 | 1011 | { |
78112e55 JE |
1012 | struct fnic *fnic = fnic_from_ctlr(fip); |
1013 | struct vnic_wq *wq = &fnic->wq[0]; | |
1014 | dma_addr_t pa; | |
1015 | struct ethhdr *eth_hdr; | |
1016 | struct vlan_ethhdr *vlan_hdr; | |
1017 | unsigned long flags; | |
1018 | ||
1019 | if (!fnic->vlan_hw_insert) { | |
1020 | eth_hdr = (struct ethhdr *)skb_mac_header(skb); | |
d58ff351 | 1021 | vlan_hdr = skb_push(skb, sizeof(*vlan_hdr) - sizeof(*eth_hdr)); |
78112e55 JE |
1022 | memcpy(vlan_hdr, eth_hdr, 2 * ETH_ALEN); |
1023 | vlan_hdr->h_vlan_proto = htons(ETH_P_8021Q); | |
1024 | vlan_hdr->h_vlan_encapsulated_proto = eth_hdr->h_proto; | |
1025 | vlan_hdr->h_vlan_TCI = htons(fnic->vlan_id); | |
abb14148 HS |
1026 | if ((fnic_fc_trace_set_data(fnic->lport->host->host_no, |
1027 | FNIC_FC_SEND|0x80, (char *)eth_hdr, skb->len)) != 0) { | |
1028 | printk(KERN_ERR "fnic ctlr frame trace error!!!"); | |
1029 | } | |
1030 | } else { | |
1031 | if ((fnic_fc_trace_set_data(fnic->lport->host->host_no, | |
1032 | FNIC_FC_SEND|0x80, (char *)skb->data, skb->len)) != 0) { | |
1033 | printk(KERN_ERR "fnic ctlr frame trace error!!!"); | |
1034 | } | |
78112e55 JE |
1035 | } |
1036 | ||
7f9b0f77 CH |
1037 | pa = dma_map_single(&fnic->pdev->dev, skb->data, skb->len, |
1038 | DMA_TO_DEVICE); | |
1039 | if (dma_mapping_error(&fnic->pdev->dev, pa)) { | |
1040 | printk(KERN_ERR "DMA mapping failed\n"); | |
fd6ddfa4 | 1041 | goto free_skb; |
78112e55 JE |
1042 | } |
1043 | ||
fd6ddfa4 ML |
1044 | spin_lock_irqsave(&fnic->wq_lock[0], flags); |
1045 | if (!vnic_wq_desc_avail(wq)) | |
1046 | goto irq_restore; | |
1047 | ||
78112e55 | 1048 | fnic_queue_wq_eth_desc(wq, skb, pa, skb->len, |
c0773b7c HP |
1049 | 0 /* hw inserts cos value */, |
1050 | fnic->vlan_id, 1); | |
78112e55 | 1051 | spin_unlock_irqrestore(&fnic->wq_lock[0], flags); |
fd6ddfa4 ML |
1052 | return; |
1053 | ||
1054 | irq_restore: | |
1055 | spin_unlock_irqrestore(&fnic->wq_lock[0], flags); | |
7f9b0f77 | 1056 | dma_unmap_single(&fnic->pdev->dev, pa, skb->len, DMA_TO_DEVICE); |
fd6ddfa4 ML |
1057 | free_skb: |
1058 | kfree_skb(skb); | |
5df6d737 AJ |
1059 | } |
1060 | ||
78112e55 JE |
1061 | /* |
1062 | * Send FC frame. | |
1063 | */ | |
1064 | static int fnic_send_frame(struct fnic *fnic, struct fc_frame *fp) | |
5df6d737 AJ |
1065 | { |
1066 | struct vnic_wq *wq = &fnic->wq[0]; | |
1067 | struct sk_buff *skb; | |
1068 | dma_addr_t pa; | |
1069 | struct ethhdr *eth_hdr; | |
1070 | struct vlan_ethhdr *vlan_hdr; | |
1071 | struct fcoe_hdr *fcoe_hdr; | |
1072 | struct fc_frame_header *fh; | |
1073 | u32 tot_len, eth_hdr_len; | |
1074 | int ret = 0; | |
1075 | unsigned long flags; | |
1076 | ||
1077 | fh = fc_frame_header_get(fp); | |
1078 | skb = fp_skb(fp); | |
1079 | ||
78112e55 JE |
1080 | if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ) && |
1081 | fcoe_ctlr_els_send(&fnic->ctlr, fnic->lport, skb)) | |
1082 | return 0; | |
1083 | ||
5df6d737 AJ |
1084 | if (!fnic->vlan_hw_insert) { |
1085 | eth_hdr_len = sizeof(*vlan_hdr) + sizeof(*fcoe_hdr); | |
d58ff351 | 1086 | vlan_hdr = skb_push(skb, eth_hdr_len); |
5df6d737 AJ |
1087 | eth_hdr = (struct ethhdr *)vlan_hdr; |
1088 | vlan_hdr->h_vlan_proto = htons(ETH_P_8021Q); | |
1089 | vlan_hdr->h_vlan_encapsulated_proto = htons(ETH_P_FCOE); | |
1090 | vlan_hdr->h_vlan_TCI = htons(fnic->vlan_id); | |
1091 | fcoe_hdr = (struct fcoe_hdr *)(vlan_hdr + 1); | |
1092 | } else { | |
1093 | eth_hdr_len = sizeof(*eth_hdr) + sizeof(*fcoe_hdr); | |
d58ff351 | 1094 | eth_hdr = skb_push(skb, eth_hdr_len); |
5df6d737 AJ |
1095 | eth_hdr->h_proto = htons(ETH_P_FCOE); |
1096 | fcoe_hdr = (struct fcoe_hdr *)(eth_hdr + 1); | |
1097 | } | |
1098 | ||
78112e55 | 1099 | if (fnic->ctlr.map_dest) |
5df6d737 | 1100 | fc_fcoe_set_mac(eth_hdr->h_dest, fh->fh_d_id); |
78112e55 JE |
1101 | else |
1102 | memcpy(eth_hdr->h_dest, fnic->ctlr.dest_addr, ETH_ALEN); | |
1103 | memcpy(eth_hdr->h_source, fnic->data_src_addr, ETH_ALEN); | |
5df6d737 AJ |
1104 | |
1105 | tot_len = skb->len; | |
1106 | BUG_ON(tot_len % 4); | |
1107 | ||
1108 | memset(fcoe_hdr, 0, sizeof(*fcoe_hdr)); | |
1109 | fcoe_hdr->fcoe_sof = fr_sof(fp); | |
1110 | if (FC_FCOE_VER) | |
1111 | FC_FCOE_ENCAPS_VER(fcoe_hdr, FC_FCOE_VER); | |
1112 | ||
7f9b0f77 CH |
1113 | pa = dma_map_single(&fnic->pdev->dev, eth_hdr, tot_len, DMA_TO_DEVICE); |
1114 | if (dma_mapping_error(&fnic->pdev->dev, pa)) { | |
dd7328e4 | 1115 | ret = -ENOMEM; |
fd6ddfa4 ML |
1116 | printk(KERN_ERR "DMA map failed with error %d\n", ret); |
1117 | goto free_skb_on_err; | |
1118 | } | |
1119 | ||
abb14148 HS |
1120 | if ((fnic_fc_trace_set_data(fnic->lport->host->host_no, FNIC_FC_SEND, |
1121 | (char *)eth_hdr, tot_len)) != 0) { | |
1122 | printk(KERN_ERR "fnic ctlr frame trace error!!!"); | |
1123 | } | |
1124 | ||
5df6d737 AJ |
1125 | spin_lock_irqsave(&fnic->wq_lock[0], flags); |
1126 | ||
1127 | if (!vnic_wq_desc_avail(wq)) { | |
7f9b0f77 | 1128 | dma_unmap_single(&fnic->pdev->dev, pa, tot_len, DMA_TO_DEVICE); |
5df6d737 | 1129 | ret = -1; |
fd6ddfa4 | 1130 | goto irq_restore; |
5df6d737 AJ |
1131 | } |
1132 | ||
1133 | fnic_queue_wq_desc(wq, skb, pa, tot_len, fr_eof(fp), | |
c0773b7c HP |
1134 | 0 /* hw inserts cos value */, |
1135 | fnic->vlan_id, 1, 1, 1); | |
fd6ddfa4 ML |
1136 | |
1137 | irq_restore: | |
5df6d737 AJ |
1138 | spin_unlock_irqrestore(&fnic->wq_lock[0], flags); |
1139 | ||
fd6ddfa4 | 1140 | free_skb_on_err: |
5df6d737 AJ |
1141 | if (ret) |
1142 | dev_kfree_skb_any(fp_skb(fp)); | |
1143 | ||
1144 | return ret; | |
1145 | } | |
1146 | ||
1147 | /* | |
1148 | * fnic_send | |
1149 | * Routine to send a raw frame | |
1150 | */ | |
1151 | int fnic_send(struct fc_lport *lp, struct fc_frame *fp) | |
1152 | { | |
1153 | struct fnic *fnic = lport_priv(lp); | |
5df6d737 | 1154 | unsigned long flags; |
5df6d737 AJ |
1155 | |
1156 | if (fnic->in_remove) { | |
1157 | dev_kfree_skb(fp_skb(fp)); | |
78112e55 | 1158 | return -1; |
5df6d737 AJ |
1159 | } |
1160 | ||
78112e55 JE |
1161 | /* |
1162 | * Queue frame if in a transitional state. | |
1163 | * This occurs while registering the Port_ID / MAC address after FLOGI. | |
1164 | */ | |
1165 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
1166 | if (fnic->state != FNIC_IN_FC_MODE && fnic->state != FNIC_IN_ETH_MODE) { | |
1167 | skb_queue_tail(&fnic->tx_queue, fp_skb(fp)); | |
1168 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
1169 | return 0; | |
1170 | } | |
1171 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
5df6d737 | 1172 | |
78112e55 JE |
1173 | return fnic_send_frame(fnic, fp); |
1174 | } | |
5df6d737 | 1175 | |
78112e55 JE |
1176 | /** |
1177 | * fnic_flush_tx() - send queued frames. | |
1178 | * @fnic: fnic device | |
1179 | * | |
1180 | * Send frames that were waiting to go out in FC or Ethernet mode. | |
1181 | * Whenever changing modes we purge queued frames, so these frames should | |
1182 | * be queued for the stable mode that we're in, either FC or Ethernet. | |
1183 | * | |
1184 | * Called without fnic_lock held. | |
1185 | */ | |
1186 | void fnic_flush_tx(struct fnic *fnic) | |
1187 | { | |
1188 | struct sk_buff *skb; | |
1189 | struct fc_frame *fp; | |
5df6d737 | 1190 | |
d9e9ab56 | 1191 | while ((skb = skb_dequeue(&fnic->tx_queue))) { |
78112e55 JE |
1192 | fp = (struct fc_frame *)skb; |
1193 | fnic_send_frame(fnic, fp); | |
1194 | } | |
1195 | } | |
5df6d737 | 1196 | |
78112e55 JE |
1197 | /** |
1198 | * fnic_set_eth_mode() - put fnic into ethernet mode. | |
1199 | * @fnic: fnic device | |
1200 | * | |
1201 | * Called without fnic lock held. | |
1202 | */ | |
1203 | static void fnic_set_eth_mode(struct fnic *fnic) | |
1204 | { | |
1205 | unsigned long flags; | |
1206 | enum fnic_state old_state; | |
1207 | int ret; | |
1208 | ||
1209 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
1210 | again: | |
5df6d737 AJ |
1211 | old_state = fnic->state; |
1212 | switch (old_state) { | |
1213 | case FNIC_IN_FC_MODE: | |
1214 | case FNIC_IN_ETH_TRANS_FC_MODE: | |
1215 | default: | |
1216 | fnic->state = FNIC_IN_FC_TRANS_ETH_MODE; | |
5df6d737 AJ |
1217 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); |
1218 | ||
5df6d737 AJ |
1219 | ret = fnic_fw_reset_handler(fnic); |
1220 | ||
1221 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
1222 | if (fnic->state != FNIC_IN_FC_TRANS_ETH_MODE) | |
1223 | goto again; | |
78112e55 | 1224 | if (ret) |
5df6d737 | 1225 | fnic->state = old_state; |
5df6d737 AJ |
1226 | break; |
1227 | ||
1228 | case FNIC_IN_FC_TRANS_ETH_MODE: | |
5df6d737 | 1229 | case FNIC_IN_ETH_MODE: |
5df6d737 AJ |
1230 | break; |
1231 | } | |
78112e55 | 1232 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); |
5df6d737 AJ |
1233 | } |
1234 | ||
1235 | static void fnic_wq_complete_frame_send(struct vnic_wq *wq, | |
1236 | struct cq_desc *cq_desc, | |
1237 | struct vnic_wq_buf *buf, void *opaque) | |
1238 | { | |
1239 | struct sk_buff *skb = buf->os_buf; | |
1240 | struct fc_frame *fp = (struct fc_frame *)skb; | |
1241 | struct fnic *fnic = vnic_dev_priv(wq->vdev); | |
1242 | ||
7f9b0f77 CH |
1243 | dma_unmap_single(&fnic->pdev->dev, buf->dma_addr, buf->len, |
1244 | DMA_TO_DEVICE); | |
5df6d737 AJ |
1245 | dev_kfree_skb_irq(fp_skb(fp)); |
1246 | buf->os_buf = NULL; | |
1247 | } | |
1248 | ||
1249 | static int fnic_wq_cmpl_handler_cont(struct vnic_dev *vdev, | |
1250 | struct cq_desc *cq_desc, u8 type, | |
1251 | u16 q_number, u16 completed_index, | |
1252 | void *opaque) | |
1253 | { | |
1254 | struct fnic *fnic = vnic_dev_priv(vdev); | |
1255 | unsigned long flags; | |
1256 | ||
1257 | spin_lock_irqsave(&fnic->wq_lock[q_number], flags); | |
1258 | vnic_wq_service(&fnic->wq[q_number], cq_desc, completed_index, | |
1259 | fnic_wq_complete_frame_send, NULL); | |
1260 | spin_unlock_irqrestore(&fnic->wq_lock[q_number], flags); | |
1261 | ||
1262 | return 0; | |
1263 | } | |
1264 | ||
1265 | int fnic_wq_cmpl_handler(struct fnic *fnic, int work_to_do) | |
1266 | { | |
1267 | unsigned int wq_work_done = 0; | |
1268 | unsigned int i; | |
1269 | ||
1270 | for (i = 0; i < fnic->raw_wq_count; i++) { | |
1271 | wq_work_done += vnic_cq_service(&fnic->cq[fnic->rq_count+i], | |
1272 | work_to_do, | |
1273 | fnic_wq_cmpl_handler_cont, | |
1274 | NULL); | |
1275 | } | |
1276 | ||
1277 | return wq_work_done; | |
1278 | } | |
1279 | ||
1280 | ||
1281 | void fnic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf) | |
1282 | { | |
1283 | struct fc_frame *fp = buf->os_buf; | |
1284 | struct fnic *fnic = vnic_dev_priv(wq->vdev); | |
1285 | ||
7f9b0f77 CH |
1286 | dma_unmap_single(&fnic->pdev->dev, buf->dma_addr, buf->len, |
1287 | DMA_TO_DEVICE); | |
5df6d737 AJ |
1288 | |
1289 | dev_kfree_skb(fp_skb(fp)); | |
1290 | buf->os_buf = NULL; | |
1291 | } | |
d3c995f1 HP |
1292 | |
1293 | void fnic_fcoe_reset_vlans(struct fnic *fnic) | |
1294 | { | |
1295 | unsigned long flags; | |
1296 | struct fcoe_vlan *vlan; | |
1297 | struct fcoe_vlan *next; | |
1298 | ||
1299 | /* | |
1300 | * indicate a link down to fcoe so that all fcf's are free'd | |
1301 | * might not be required since we did this before sending vlan | |
1302 | * discovery request | |
1303 | */ | |
1304 | spin_lock_irqsave(&fnic->vlans_lock, flags); | |
1305 | if (!list_empty(&fnic->vlans)) { | |
1306 | list_for_each_entry_safe(vlan, next, &fnic->vlans, list) { | |
1307 | list_del(&vlan->list); | |
1308 | kfree(vlan); | |
1309 | } | |
1310 | } | |
1311 | spin_unlock_irqrestore(&fnic->vlans_lock, flags); | |
1312 | } | |
1313 | ||
1314 | void fnic_handle_fip_timer(struct fnic *fnic) | |
1315 | { | |
1316 | unsigned long flags; | |
1317 | struct fcoe_vlan *vlan; | |
67125b02 | 1318 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
d3c995f1 HP |
1319 | u64 sol_time; |
1320 | ||
1321 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
1322 | if (fnic->stop_rx_link_events) { | |
1323 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
1324 | return; | |
1325 | } | |
1326 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
1327 | ||
1917d42d | 1328 | if (fnic->ctlr.mode == FIP_MODE_NON_FIP) |
d3c995f1 HP |
1329 | return; |
1330 | ||
1331 | spin_lock_irqsave(&fnic->vlans_lock, flags); | |
1332 | if (list_empty(&fnic->vlans)) { | |
d3c995f1 | 1333 | spin_unlock_irqrestore(&fnic->vlans_lock, flags); |
b43abcbb | 1334 | /* no vlans available, try again */ |
d2478dd2 LD |
1335 | if (unlikely(fnic_log_level & FNIC_FCS_LOGGING)) |
1336 | if (printk_ratelimit()) | |
1337 | shost_printk(KERN_DEBUG, fnic->lport->host, | |
1338 | "Start VLAN Discovery\n"); | |
d3c995f1 HP |
1339 | fnic_event_enq(fnic, FNIC_EVT_START_VLAN_DISC); |
1340 | return; | |
1341 | } | |
1342 | ||
1343 | vlan = list_first_entry(&fnic->vlans, struct fcoe_vlan, list); | |
90b3a938 | 1344 | FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, |
d3c995f1 HP |
1345 | "fip_timer: vlan %d state %d sol_count %d\n", |
1346 | vlan->vid, vlan->state, vlan->sol_count); | |
1347 | switch (vlan->state) { | |
1348 | case FIP_VLAN_USED: | |
1349 | FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, | |
1350 | "FIP VLAN is selected for FC transaction\n"); | |
1351 | spin_unlock_irqrestore(&fnic->vlans_lock, flags); | |
1352 | break; | |
1353 | case FIP_VLAN_FAILED: | |
d3c995f1 | 1354 | spin_unlock_irqrestore(&fnic->vlans_lock, flags); |
b43abcbb | 1355 | /* if all vlans are in failed state, restart vlan disc */ |
d2478dd2 LD |
1356 | if (unlikely(fnic_log_level & FNIC_FCS_LOGGING)) |
1357 | if (printk_ratelimit()) | |
1358 | shost_printk(KERN_DEBUG, fnic->lport->host, | |
1359 | "Start VLAN Discovery\n"); | |
d3c995f1 HP |
1360 | fnic_event_enq(fnic, FNIC_EVT_START_VLAN_DISC); |
1361 | break; | |
1362 | case FIP_VLAN_SENT: | |
1363 | if (vlan->sol_count >= FCOE_CTLR_MAX_SOL) { | |
1364 | /* | |
1365 | * no response on this vlan, remove from the list. | |
1366 | * Try the next vlan | |
1367 | */ | |
90b3a938 | 1368 | FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, |
d3c995f1 HP |
1369 | "Dequeue this VLAN ID %d from list\n", |
1370 | vlan->vid); | |
1371 | list_del(&vlan->list); | |
1372 | kfree(vlan); | |
1373 | vlan = NULL; | |
1374 | if (list_empty(&fnic->vlans)) { | |
1375 | /* we exhausted all vlans, restart vlan disc */ | |
1376 | spin_unlock_irqrestore(&fnic->vlans_lock, | |
1377 | flags); | |
90b3a938 | 1378 | FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, |
d3c995f1 HP |
1379 | "fip_timer: vlan list empty, " |
1380 | "trigger vlan disc\n"); | |
1381 | fnic_event_enq(fnic, FNIC_EVT_START_VLAN_DISC); | |
1382 | return; | |
1383 | } | |
1384 | /* check the next vlan */ | |
1385 | vlan = list_first_entry(&fnic->vlans, struct fcoe_vlan, | |
1386 | list); | |
1387 | fnic->set_vlan(fnic, vlan->vid); | |
1388 | vlan->state = FIP_VLAN_SENT; /* sent now */ | |
1389 | } | |
1390 | spin_unlock_irqrestore(&fnic->vlans_lock, flags); | |
67125b02 | 1391 | atomic64_inc(&fnic_stats->vlan_stats.sol_expiry_count); |
d3c995f1 HP |
1392 | vlan->sol_count++; |
1393 | sol_time = jiffies + msecs_to_jiffies | |
1394 | (FCOE_CTLR_START_DELAY); | |
1395 | mod_timer(&fnic->fip_timer, round_jiffies(sol_time)); | |
1396 | break; | |
1397 | } | |
1398 | } |