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42e9a92f RL |
1 | /* |
2 | * Copyright(c) 2007 Intel Corporation. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., | |
15 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | * | |
17 | * Maintained at www.Open-FCoE.org | |
18 | */ | |
19 | ||
20 | /* | |
21 | * PORT LOCKING NOTES | |
22 | * | |
23 | * These comments only apply to the 'port code' which consists of the lport, | |
24 | * disc and rport blocks. | |
25 | * | |
26 | * MOTIVATION | |
27 | * | |
28 | * The lport, disc and rport blocks all have mutexes that are used to protect | |
29 | * those objects. The main motivation for these locks is to prevent from | |
30 | * having an lport reset just before we send a frame. In that scenario the | |
31 | * lport's FID would get set to zero and then we'd send a frame with an | |
32 | * invalid SID. We also need to ensure that states don't change unexpectedly | |
33 | * while processing another state. | |
34 | * | |
35 | * HEIRARCHY | |
36 | * | |
37 | * The following heirarchy defines the locking rules. A greater lock | |
38 | * may be held before acquiring a lesser lock, but a lesser lock should never | |
39 | * be held while attempting to acquire a greater lock. Here is the heirarchy- | |
40 | * | |
41 | * lport > disc, lport > rport, disc > rport | |
42 | * | |
43 | * CALLBACKS | |
44 | * | |
45 | * The callbacks cause complications with this scheme. There is a callback | |
46 | * from the rport (to either lport or disc) and a callback from disc | |
47 | * (to the lport). | |
48 | * | |
49 | * As rports exit the rport state machine a callback is made to the owner of | |
50 | * the rport to notify success or failure. Since the callback is likely to | |
51 | * cause the lport or disc to grab its lock we cannot hold the rport lock | |
52 | * while making the callback. To ensure that the rport is not free'd while | |
53 | * processing the callback the rport callbacks are serialized through a | |
54 | * single-threaded workqueue. An rport would never be free'd while in a | |
55 | * callback handler becuase no other rport work in this queue can be executed | |
56 | * at the same time. | |
57 | * | |
58 | * When discovery succeeds or fails a callback is made to the lport as | |
59 | * notification. Currently, succesful discovery causes the lport to take no | |
60 | * action. A failure will cause the lport to reset. There is likely a circular | |
61 | * locking problem with this implementation. | |
62 | */ | |
63 | ||
64 | /* | |
65 | * LPORT LOCKING | |
66 | * | |
67 | * The critical sections protected by the lport's mutex are quite broad and | |
68 | * may be improved upon in the future. The lport code and its locking doesn't | |
69 | * influence the I/O path, so excessive locking doesn't penalize I/O | |
70 | * performance. | |
71 | * | |
72 | * The strategy is to lock whenever processing a request or response. Note | |
73 | * that every _enter_* function corresponds to a state change. They generally | |
74 | * change the lports state and then send a request out on the wire. We lock | |
75 | * before calling any of these functions to protect that state change. This | |
76 | * means that the entry points into the lport block manage the locks while | |
77 | * the state machine can transition between states (i.e. _enter_* functions) | |
78 | * while always staying protected. | |
79 | * | |
80 | * When handling responses we also hold the lport mutex broadly. When the | |
81 | * lport receives the response frame it locks the mutex and then calls the | |
82 | * appropriate handler for the particuar response. Generally a response will | |
83 | * trigger a state change and so the lock must already be held. | |
84 | * | |
85 | * Retries also have to consider the locking. The retries occur from a work | |
86 | * context and the work function will lock the lport and then retry the state | |
87 | * (i.e. _enter_* function). | |
88 | */ | |
89 | ||
90 | #include <linux/timer.h> | |
91 | #include <asm/unaligned.h> | |
92 | ||
93 | #include <scsi/fc/fc_gs.h> | |
94 | ||
95 | #include <scsi/libfc.h> | |
96 | #include <scsi/fc_encode.h> | |
97 | ||
98 | /* Fabric IDs to use for point-to-point mode, chosen on whims. */ | |
99 | #define FC_LOCAL_PTP_FID_LO 0x010101 | |
100 | #define FC_LOCAL_PTP_FID_HI 0x010102 | |
101 | ||
102 | #define DNS_DELAY 3 /* Discovery delay after RSCN (in seconds)*/ | |
103 | ||
42e9a92f RL |
104 | static void fc_lport_error(struct fc_lport *, struct fc_frame *); |
105 | ||
106 | static void fc_lport_enter_reset(struct fc_lport *); | |
107 | static void fc_lport_enter_flogi(struct fc_lport *); | |
108 | static void fc_lport_enter_dns(struct fc_lport *); | |
109 | static void fc_lport_enter_rpn_id(struct fc_lport *); | |
110 | static void fc_lport_enter_rft_id(struct fc_lport *); | |
111 | static void fc_lport_enter_scr(struct fc_lport *); | |
112 | static void fc_lport_enter_ready(struct fc_lport *); | |
113 | static void fc_lport_enter_logo(struct fc_lport *); | |
114 | ||
115 | static const char *fc_lport_state_names[] = { | |
b1d9fd55 | 116 | [LPORT_ST_DISABLED] = "disabled", |
42e9a92f RL |
117 | [LPORT_ST_FLOGI] = "FLOGI", |
118 | [LPORT_ST_DNS] = "dNS", | |
119 | [LPORT_ST_RPN_ID] = "RPN_ID", | |
120 | [LPORT_ST_RFT_ID] = "RFT_ID", | |
121 | [LPORT_ST_SCR] = "SCR", | |
122 | [LPORT_ST_READY] = "Ready", | |
123 | [LPORT_ST_LOGO] = "LOGO", | |
124 | [LPORT_ST_RESET] = "reset", | |
125 | }; | |
126 | ||
127 | static int fc_frame_drop(struct fc_lport *lport, struct fc_frame *fp) | |
128 | { | |
129 | fc_frame_free(fp); | |
130 | return 0; | |
131 | } | |
132 | ||
133 | /** | |
34f42a07 | 134 | * fc_lport_rport_callback() - Event handler for rport events |
42e9a92f | 135 | * @lport: The lport which is receiving the event |
9fb9d328 | 136 | * @rdata: private remote port data |
42e9a92f RL |
137 | * @event: The event that occured |
138 | * | |
139 | * Locking Note: The rport lock should not be held when calling | |
140 | * this function. | |
141 | */ | |
142 | static void fc_lport_rport_callback(struct fc_lport *lport, | |
9fb9d328 | 143 | struct fc_rport_priv *rdata, |
42e9a92f RL |
144 | enum fc_rport_event event) |
145 | { | |
7414705e | 146 | FC_LPORT_DBG(lport, "Received a %d event for port (%6x)\n", event, |
f211fa51 | 147 | rdata->ids.port_id); |
42e9a92f | 148 | |
b5cbf083 | 149 | mutex_lock(&lport->lp_mutex); |
42e9a92f | 150 | switch (event) { |
4c0f62b5 | 151 | case RPORT_EV_READY: |
b5cbf083 JE |
152 | if (lport->state == LPORT_ST_DNS) { |
153 | lport->dns_rp = rdata; | |
154 | fc_lport_enter_rpn_id(lport); | |
155 | } else { | |
156 | FC_LPORT_DBG(lport, "Received an READY event " | |
157 | "on port (%6x) for the directory " | |
158 | "server, but the lport is not " | |
159 | "in the DNS state, it's in the " | |
160 | "%d state", rdata->ids.port_id, | |
161 | lport->state); | |
162 | lport->tt.rport_logoff(rdata); | |
163 | } | |
42e9a92f RL |
164 | break; |
165 | case RPORT_EV_LOGO: | |
166 | case RPORT_EV_FAILED: | |
167 | case RPORT_EV_STOP: | |
b5cbf083 | 168 | lport->dns_rp = NULL; |
42e9a92f RL |
169 | break; |
170 | case RPORT_EV_NONE: | |
171 | break; | |
172 | } | |
b5cbf083 | 173 | mutex_unlock(&lport->lp_mutex); |
42e9a92f RL |
174 | } |
175 | ||
176 | /** | |
34f42a07 | 177 | * fc_lport_state() - Return a string which represents the lport's state |
42e9a92f RL |
178 | * @lport: The lport whose state is to converted to a string |
179 | */ | |
180 | static const char *fc_lport_state(struct fc_lport *lport) | |
181 | { | |
182 | const char *cp; | |
183 | ||
184 | cp = fc_lport_state_names[lport->state]; | |
185 | if (!cp) | |
186 | cp = "unknown"; | |
187 | return cp; | |
188 | } | |
189 | ||
190 | /** | |
34f42a07 | 191 | * fc_lport_ptp_setup() - Create an rport for point-to-point mode |
42e9a92f RL |
192 | * @lport: The lport to attach the ptp rport to |
193 | * @fid: The FID of the ptp rport | |
194 | * @remote_wwpn: The WWPN of the ptp rport | |
195 | * @remote_wwnn: The WWNN of the ptp rport | |
196 | */ | |
197 | static void fc_lport_ptp_setup(struct fc_lport *lport, | |
198 | u32 remote_fid, u64 remote_wwpn, | |
199 | u64 remote_wwnn) | |
200 | { | |
48f00902 JE |
201 | mutex_lock(&lport->disc.disc_mutex); |
202 | if (lport->ptp_rp) | |
42e9a92f | 203 | lport->tt.rport_logoff(lport->ptp_rp); |
9737e6a7 RL |
204 | lport->ptp_rp = lport->tt.rport_create(lport, remote_fid); |
205 | lport->ptp_rp->ids.port_name = remote_wwpn; | |
206 | lport->ptp_rp->ids.node_name = remote_wwnn; | |
48f00902 | 207 | mutex_unlock(&lport->disc.disc_mutex); |
42e9a92f RL |
208 | |
209 | lport->tt.rport_login(lport->ptp_rp); | |
210 | ||
211 | fc_lport_enter_ready(lport); | |
212 | } | |
213 | ||
214 | void fc_get_host_port_type(struct Scsi_Host *shost) | |
215 | { | |
216 | /* TODO - currently just NPORT */ | |
217 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
218 | } | |
219 | EXPORT_SYMBOL(fc_get_host_port_type); | |
220 | ||
221 | void fc_get_host_port_state(struct Scsi_Host *shost) | |
222 | { | |
223 | struct fc_lport *lp = shost_priv(shost); | |
224 | ||
bc0e17f6 | 225 | if (lp->link_up) |
42e9a92f RL |
226 | fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; |
227 | else | |
228 | fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; | |
229 | } | |
230 | EXPORT_SYMBOL(fc_get_host_port_state); | |
231 | ||
232 | void fc_get_host_speed(struct Scsi_Host *shost) | |
233 | { | |
234 | struct fc_lport *lport = shost_priv(shost); | |
235 | ||
236 | fc_host_speed(shost) = lport->link_speed; | |
237 | } | |
238 | EXPORT_SYMBOL(fc_get_host_speed); | |
239 | ||
240 | struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost) | |
241 | { | |
42e9a92f RL |
242 | struct fc_host_statistics *fcoe_stats; |
243 | struct fc_lport *lp = shost_priv(shost); | |
244 | struct timespec v0, v1; | |
582b45bc | 245 | unsigned int cpu; |
42e9a92f RL |
246 | |
247 | fcoe_stats = &lp->host_stats; | |
248 | memset(fcoe_stats, 0, sizeof(struct fc_host_statistics)); | |
249 | ||
250 | jiffies_to_timespec(jiffies, &v0); | |
251 | jiffies_to_timespec(lp->boot_time, &v1); | |
252 | fcoe_stats->seconds_since_last_reset = (v0.tv_sec - v1.tv_sec); | |
253 | ||
582b45bc RL |
254 | for_each_possible_cpu(cpu) { |
255 | struct fcoe_dev_stats *stats; | |
256 | ||
257 | stats = per_cpu_ptr(lp->dev_stats, cpu); | |
258 | ||
42e9a92f RL |
259 | fcoe_stats->tx_frames += stats->TxFrames; |
260 | fcoe_stats->tx_words += stats->TxWords; | |
261 | fcoe_stats->rx_frames += stats->RxFrames; | |
262 | fcoe_stats->rx_words += stats->RxWords; | |
263 | fcoe_stats->error_frames += stats->ErrorFrames; | |
264 | fcoe_stats->invalid_crc_count += stats->InvalidCRCCount; | |
265 | fcoe_stats->fcp_input_requests += stats->InputRequests; | |
266 | fcoe_stats->fcp_output_requests += stats->OutputRequests; | |
267 | fcoe_stats->fcp_control_requests += stats->ControlRequests; | |
268 | fcoe_stats->fcp_input_megabytes += stats->InputMegabytes; | |
269 | fcoe_stats->fcp_output_megabytes += stats->OutputMegabytes; | |
270 | fcoe_stats->link_failure_count += stats->LinkFailureCount; | |
271 | } | |
272 | fcoe_stats->lip_count = -1; | |
273 | fcoe_stats->nos_count = -1; | |
274 | fcoe_stats->loss_of_sync_count = -1; | |
275 | fcoe_stats->loss_of_signal_count = -1; | |
276 | fcoe_stats->prim_seq_protocol_err_count = -1; | |
277 | fcoe_stats->dumped_frames = -1; | |
278 | return fcoe_stats; | |
279 | } | |
280 | EXPORT_SYMBOL(fc_get_host_stats); | |
281 | ||
282 | /* | |
283 | * Fill in FLOGI command for request. | |
284 | */ | |
285 | static void | |
286 | fc_lport_flogi_fill(struct fc_lport *lport, struct fc_els_flogi *flogi, | |
287 | unsigned int op) | |
288 | { | |
289 | struct fc_els_csp *sp; | |
290 | struct fc_els_cssp *cp; | |
291 | ||
292 | memset(flogi, 0, sizeof(*flogi)); | |
293 | flogi->fl_cmd = (u8) op; | |
294 | put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn); | |
295 | put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn); | |
296 | sp = &flogi->fl_csp; | |
297 | sp->sp_hi_ver = 0x20; | |
298 | sp->sp_lo_ver = 0x20; | |
299 | sp->sp_bb_cred = htons(10); /* this gets set by gateway */ | |
300 | sp->sp_bb_data = htons((u16) lport->mfs); | |
301 | cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */ | |
302 | cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ); | |
303 | if (op != ELS_FLOGI) { | |
304 | sp->sp_features = htons(FC_SP_FT_CIRO); | |
305 | sp->sp_tot_seq = htons(255); /* seq. we accept */ | |
306 | sp->sp_rel_off = htons(0x1f); | |
307 | sp->sp_e_d_tov = htonl(lport->e_d_tov); | |
308 | ||
309 | cp->cp_rdfs = htons((u16) lport->mfs); | |
310 | cp->cp_con_seq = htons(255); | |
311 | cp->cp_open_seq = 1; | |
312 | } | |
313 | } | |
314 | ||
315 | /* | |
316 | * Add a supported FC-4 type. | |
317 | */ | |
318 | static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type) | |
319 | { | |
320 | __be32 *mp; | |
321 | ||
322 | mp = &lport->fcts.ff_type_map[type / FC_NS_BPW]; | |
323 | *mp = htonl(ntohl(*mp) | 1UL << (type % FC_NS_BPW)); | |
324 | } | |
325 | ||
326 | /** | |
34f42a07 | 327 | * fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report. |
42e9a92f RL |
328 | * @lport: Fibre Channel local port recieving the RLIR |
329 | * @sp: current sequence in the RLIR exchange | |
330 | * @fp: RLIR request frame | |
331 | * | |
332 | * Locking Note: The lport lock is exected to be held before calling | |
333 | * this function. | |
334 | */ | |
335 | static void fc_lport_recv_rlir_req(struct fc_seq *sp, struct fc_frame *fp, | |
336 | struct fc_lport *lport) | |
337 | { | |
7414705e RL |
338 | FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n", |
339 | fc_lport_state(lport)); | |
42e9a92f RL |
340 | |
341 | lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); | |
342 | fc_frame_free(fp); | |
343 | } | |
344 | ||
345 | /** | |
34f42a07 | 346 | * fc_lport_recv_echo_req() - Handle received ECHO request |
42e9a92f RL |
347 | * @lport: Fibre Channel local port recieving the ECHO |
348 | * @sp: current sequence in the ECHO exchange | |
349 | * @fp: ECHO request frame | |
350 | * | |
351 | * Locking Note: The lport lock is exected to be held before calling | |
352 | * this function. | |
353 | */ | |
354 | static void fc_lport_recv_echo_req(struct fc_seq *sp, struct fc_frame *in_fp, | |
355 | struct fc_lport *lport) | |
356 | { | |
357 | struct fc_frame *fp; | |
358 | struct fc_exch *ep = fc_seq_exch(sp); | |
359 | unsigned int len; | |
360 | void *pp; | |
361 | void *dp; | |
362 | u32 f_ctl; | |
363 | ||
7414705e RL |
364 | FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n", |
365 | fc_lport_state(lport)); | |
42e9a92f RL |
366 | |
367 | len = fr_len(in_fp) - sizeof(struct fc_frame_header); | |
368 | pp = fc_frame_payload_get(in_fp, len); | |
369 | ||
370 | if (len < sizeof(__be32)) | |
371 | len = sizeof(__be32); | |
372 | ||
373 | fp = fc_frame_alloc(lport, len); | |
374 | if (fp) { | |
375 | dp = fc_frame_payload_get(fp, len); | |
376 | memcpy(dp, pp, len); | |
377 | *((u32 *)dp) = htonl(ELS_LS_ACC << 24); | |
378 | sp = lport->tt.seq_start_next(sp); | |
379 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; | |
380 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
381 | FC_TYPE_ELS, f_ctl, 0); | |
382 | lport->tt.seq_send(lport, sp, fp); | |
383 | } | |
384 | fc_frame_free(in_fp); | |
385 | } | |
386 | ||
387 | /** | |
34f42a07 | 388 | * fc_lport_recv_echo_req() - Handle received Request Node ID data request |
42e9a92f RL |
389 | * @lport: Fibre Channel local port recieving the RNID |
390 | * @sp: current sequence in the RNID exchange | |
391 | * @fp: RNID request frame | |
392 | * | |
393 | * Locking Note: The lport lock is exected to be held before calling | |
394 | * this function. | |
395 | */ | |
396 | static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp, | |
397 | struct fc_lport *lport) | |
398 | { | |
399 | struct fc_frame *fp; | |
400 | struct fc_exch *ep = fc_seq_exch(sp); | |
401 | struct fc_els_rnid *req; | |
402 | struct { | |
403 | struct fc_els_rnid_resp rnid; | |
404 | struct fc_els_rnid_cid cid; | |
405 | struct fc_els_rnid_gen gen; | |
406 | } *rp; | |
407 | struct fc_seq_els_data rjt_data; | |
408 | u8 fmt; | |
409 | size_t len; | |
410 | u32 f_ctl; | |
411 | ||
7414705e RL |
412 | FC_LPORT_DBG(lport, "Received RNID request while in state %s\n", |
413 | fc_lport_state(lport)); | |
42e9a92f RL |
414 | |
415 | req = fc_frame_payload_get(in_fp, sizeof(*req)); | |
416 | if (!req) { | |
417 | rjt_data.fp = NULL; | |
418 | rjt_data.reason = ELS_RJT_LOGIC; | |
419 | rjt_data.explan = ELS_EXPL_NONE; | |
420 | lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); | |
421 | } else { | |
422 | fmt = req->rnid_fmt; | |
423 | len = sizeof(*rp); | |
424 | if (fmt != ELS_RNIDF_GEN || | |
425 | ntohl(lport->rnid_gen.rnid_atype) == 0) { | |
426 | fmt = ELS_RNIDF_NONE; /* nothing to provide */ | |
427 | len -= sizeof(rp->gen); | |
428 | } | |
429 | fp = fc_frame_alloc(lport, len); | |
430 | if (fp) { | |
431 | rp = fc_frame_payload_get(fp, len); | |
432 | memset(rp, 0, len); | |
433 | rp->rnid.rnid_cmd = ELS_LS_ACC; | |
434 | rp->rnid.rnid_fmt = fmt; | |
435 | rp->rnid.rnid_cid_len = sizeof(rp->cid); | |
436 | rp->cid.rnid_wwpn = htonll(lport->wwpn); | |
437 | rp->cid.rnid_wwnn = htonll(lport->wwnn); | |
438 | if (fmt == ELS_RNIDF_GEN) { | |
439 | rp->rnid.rnid_sid_len = sizeof(rp->gen); | |
440 | memcpy(&rp->gen, &lport->rnid_gen, | |
441 | sizeof(rp->gen)); | |
442 | } | |
443 | sp = lport->tt.seq_start_next(sp); | |
444 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; | |
445 | f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; | |
446 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
447 | FC_TYPE_ELS, f_ctl, 0); | |
448 | lport->tt.seq_send(lport, sp, fp); | |
449 | } | |
450 | } | |
451 | fc_frame_free(in_fp); | |
452 | } | |
453 | ||
42e9a92f | 454 | /** |
34f42a07 | 455 | * fc_lport_recv_logo_req() - Handle received fabric LOGO request |
42e9a92f RL |
456 | * @lport: Fibre Channel local port recieving the LOGO |
457 | * @sp: current sequence in the LOGO exchange | |
458 | * @fp: LOGO request frame | |
459 | * | |
460 | * Locking Note: The lport lock is exected to be held before calling | |
461 | * this function. | |
462 | */ | |
463 | static void fc_lport_recv_logo_req(struct fc_seq *sp, struct fc_frame *fp, | |
464 | struct fc_lport *lport) | |
465 | { | |
466 | lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); | |
467 | fc_lport_enter_reset(lport); | |
468 | fc_frame_free(fp); | |
469 | } | |
470 | ||
471 | /** | |
34f42a07 | 472 | * fc_fabric_login() - Start the lport state machine |
42e9a92f RL |
473 | * @lport: The lport that should log into the fabric |
474 | * | |
475 | * Locking Note: This function should not be called | |
476 | * with the lport lock held. | |
477 | */ | |
478 | int fc_fabric_login(struct fc_lport *lport) | |
479 | { | |
480 | int rc = -1; | |
481 | ||
482 | mutex_lock(&lport->lp_mutex); | |
b1d9fd55 | 483 | if (lport->state == LPORT_ST_DISABLED) { |
42e9a92f RL |
484 | fc_lport_enter_reset(lport); |
485 | rc = 0; | |
486 | } | |
487 | mutex_unlock(&lport->lp_mutex); | |
488 | ||
489 | return rc; | |
490 | } | |
491 | EXPORT_SYMBOL(fc_fabric_login); | |
492 | ||
493 | /** | |
34f42a07 | 494 | * fc_linkup() - Handler for transport linkup events |
42e9a92f RL |
495 | * @lport: The lport whose link is up |
496 | */ | |
497 | void fc_linkup(struct fc_lport *lport) | |
498 | { | |
7414705e RL |
499 | printk(KERN_INFO "libfc: Link up on port (%6x)\n", |
500 | fc_host_port_id(lport->host)); | |
42e9a92f RL |
501 | |
502 | mutex_lock(&lport->lp_mutex); | |
bc0e17f6 VD |
503 | if (!lport->link_up) { |
504 | lport->link_up = 1; | |
42e9a92f RL |
505 | |
506 | if (lport->state == LPORT_ST_RESET) | |
507 | fc_lport_enter_flogi(lport); | |
508 | } | |
509 | mutex_unlock(&lport->lp_mutex); | |
510 | } | |
511 | EXPORT_SYMBOL(fc_linkup); | |
512 | ||
513 | /** | |
34f42a07 | 514 | * fc_linkdown() - Handler for transport linkdown events |
42e9a92f RL |
515 | * @lport: The lport whose link is down |
516 | */ | |
517 | void fc_linkdown(struct fc_lport *lport) | |
518 | { | |
519 | mutex_lock(&lport->lp_mutex); | |
7414705e RL |
520 | printk(KERN_INFO "libfc: Link down on port (%6x)\n", |
521 | fc_host_port_id(lport->host)); | |
42e9a92f | 522 | |
bc0e17f6 VD |
523 | if (lport->link_up) { |
524 | lport->link_up = 0; | |
42e9a92f RL |
525 | fc_lport_enter_reset(lport); |
526 | lport->tt.fcp_cleanup(lport); | |
527 | } | |
528 | mutex_unlock(&lport->lp_mutex); | |
529 | } | |
530 | EXPORT_SYMBOL(fc_linkdown); | |
531 | ||
42e9a92f | 532 | /** |
34f42a07 | 533 | * fc_fabric_logoff() - Logout of the fabric |
42e9a92f RL |
534 | * @lport: fc_lport pointer to logoff the fabric |
535 | * | |
536 | * Return value: | |
537 | * 0 for success, -1 for failure | |
34f42a07 | 538 | */ |
42e9a92f RL |
539 | int fc_fabric_logoff(struct fc_lport *lport) |
540 | { | |
541 | lport->tt.disc_stop_final(lport); | |
542 | mutex_lock(&lport->lp_mutex); | |
a0fd2e49 AJ |
543 | if (lport->dns_rp) |
544 | lport->tt.rport_logoff(lport->dns_rp); | |
545 | mutex_unlock(&lport->lp_mutex); | |
546 | lport->tt.rport_flush_queue(); | |
547 | mutex_lock(&lport->lp_mutex); | |
42e9a92f RL |
548 | fc_lport_enter_logo(lport); |
549 | mutex_unlock(&lport->lp_mutex); | |
f7db2c15 | 550 | cancel_delayed_work_sync(&lport->retry_work); |
42e9a92f RL |
551 | return 0; |
552 | } | |
553 | EXPORT_SYMBOL(fc_fabric_logoff); | |
554 | ||
555 | /** | |
34f42a07 | 556 | * fc_lport_destroy() - unregister a fc_lport |
42e9a92f RL |
557 | * @lport: fc_lport pointer to unregister |
558 | * | |
559 | * Return value: | |
560 | * None | |
561 | * Note: | |
562 | * exit routine for fc_lport instance | |
563 | * clean-up all the allocated memory | |
564 | * and free up other system resources. | |
565 | * | |
34f42a07 | 566 | */ |
42e9a92f RL |
567 | int fc_lport_destroy(struct fc_lport *lport) |
568 | { | |
bbf15669 | 569 | mutex_lock(&lport->lp_mutex); |
b1d9fd55 | 570 | lport->state = LPORT_ST_DISABLED; |
bbf15669 | 571 | lport->link_up = 0; |
42e9a92f | 572 | lport->tt.frame_send = fc_frame_drop; |
bbf15669 AJ |
573 | mutex_unlock(&lport->lp_mutex); |
574 | ||
42e9a92f | 575 | lport->tt.fcp_abort_io(lport); |
e9ba8b42 | 576 | lport->tt.disc_stop_final(lport); |
1f6ff364 | 577 | lport->tt.exch_mgr_reset(lport, 0, 0); |
42e9a92f RL |
578 | return 0; |
579 | } | |
580 | EXPORT_SYMBOL(fc_lport_destroy); | |
581 | ||
582 | /** | |
34f42a07 | 583 | * fc_set_mfs() - sets up the mfs for the corresponding fc_lport |
42e9a92f RL |
584 | * @lport: fc_lport pointer to unregister |
585 | * @mfs: the new mfs for fc_lport | |
586 | * | |
587 | * Set mfs for the given fc_lport to the new mfs. | |
588 | * | |
589 | * Return: 0 for success | |
34f42a07 | 590 | */ |
42e9a92f RL |
591 | int fc_set_mfs(struct fc_lport *lport, u32 mfs) |
592 | { | |
593 | unsigned int old_mfs; | |
594 | int rc = -EINVAL; | |
595 | ||
596 | mutex_lock(&lport->lp_mutex); | |
597 | ||
598 | old_mfs = lport->mfs; | |
599 | ||
600 | if (mfs >= FC_MIN_MAX_FRAME) { | |
601 | mfs &= ~3; | |
602 | if (mfs > FC_MAX_FRAME) | |
603 | mfs = FC_MAX_FRAME; | |
604 | mfs -= sizeof(struct fc_frame_header); | |
605 | lport->mfs = mfs; | |
606 | rc = 0; | |
607 | } | |
608 | ||
609 | if (!rc && mfs < old_mfs) | |
610 | fc_lport_enter_reset(lport); | |
611 | ||
612 | mutex_unlock(&lport->lp_mutex); | |
613 | ||
614 | return rc; | |
615 | } | |
616 | EXPORT_SYMBOL(fc_set_mfs); | |
617 | ||
618 | /** | |
34f42a07 | 619 | * fc_lport_disc_callback() - Callback for discovery events |
42e9a92f RL |
620 | * @lport: FC local port |
621 | * @event: The discovery event | |
622 | */ | |
623 | void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event) | |
624 | { | |
625 | switch (event) { | |
626 | case DISC_EV_SUCCESS: | |
7414705e | 627 | FC_LPORT_DBG(lport, "Discovery succeeded\n"); |
42e9a92f RL |
628 | break; |
629 | case DISC_EV_FAILED: | |
7414705e RL |
630 | printk(KERN_ERR "libfc: Discovery failed for port (%6x)\n", |
631 | fc_host_port_id(lport->host)); | |
42e9a92f RL |
632 | mutex_lock(&lport->lp_mutex); |
633 | fc_lport_enter_reset(lport); | |
634 | mutex_unlock(&lport->lp_mutex); | |
635 | break; | |
636 | case DISC_EV_NONE: | |
637 | WARN_ON(1); | |
638 | break; | |
639 | } | |
640 | } | |
641 | ||
642 | /** | |
34f42a07 | 643 | * fc_rport_enter_ready() - Enter the ready state and start discovery |
42e9a92f RL |
644 | * @lport: Fibre Channel local port that is ready |
645 | * | |
646 | * Locking Note: The lport lock is expected to be held before calling | |
647 | * this routine. | |
648 | */ | |
649 | static void fc_lport_enter_ready(struct fc_lport *lport) | |
650 | { | |
7414705e RL |
651 | FC_LPORT_DBG(lport, "Entered READY from state %s\n", |
652 | fc_lport_state(lport)); | |
42e9a92f RL |
653 | |
654 | fc_lport_state_enter(lport, LPORT_ST_READY); | |
655 | ||
29d898e9 JE |
656 | if (!lport->ptp_rp) |
657 | lport->tt.disc_start(fc_lport_disc_callback, lport); | |
42e9a92f RL |
658 | } |
659 | ||
660 | /** | |
34f42a07 | 661 | * fc_lport_recv_flogi_req() - Receive a FLOGI request |
42e9a92f RL |
662 | * @sp_in: The sequence the FLOGI is on |
663 | * @rx_fp: The frame the FLOGI is in | |
664 | * @lport: The lport that recieved the request | |
665 | * | |
666 | * A received FLOGI request indicates a point-to-point connection. | |
667 | * Accept it with the common service parameters indicating our N port. | |
668 | * Set up to do a PLOGI if we have the higher-number WWPN. | |
669 | * | |
670 | * Locking Note: The lport lock is exected to be held before calling | |
671 | * this function. | |
672 | */ | |
673 | static void fc_lport_recv_flogi_req(struct fc_seq *sp_in, | |
674 | struct fc_frame *rx_fp, | |
675 | struct fc_lport *lport) | |
676 | { | |
677 | struct fc_frame *fp; | |
678 | struct fc_frame_header *fh; | |
679 | struct fc_seq *sp; | |
680 | struct fc_exch *ep; | |
681 | struct fc_els_flogi *flp; | |
682 | struct fc_els_flogi *new_flp; | |
683 | u64 remote_wwpn; | |
684 | u32 remote_fid; | |
685 | u32 local_fid; | |
686 | u32 f_ctl; | |
687 | ||
7414705e RL |
688 | FC_LPORT_DBG(lport, "Received FLOGI request while in state %s\n", |
689 | fc_lport_state(lport)); | |
42e9a92f RL |
690 | |
691 | fh = fc_frame_header_get(rx_fp); | |
692 | remote_fid = ntoh24(fh->fh_s_id); | |
693 | flp = fc_frame_payload_get(rx_fp, sizeof(*flp)); | |
694 | if (!flp) | |
695 | goto out; | |
696 | remote_wwpn = get_unaligned_be64(&flp->fl_wwpn); | |
697 | if (remote_wwpn == lport->wwpn) { | |
7414705e RL |
698 | printk(KERN_WARNING "libfc: Received FLOGI from port " |
699 | "with same WWPN %llx\n", remote_wwpn); | |
42e9a92f RL |
700 | goto out; |
701 | } | |
7414705e | 702 | FC_LPORT_DBG(lport, "FLOGI from port WWPN %llx\n", remote_wwpn); |
42e9a92f RL |
703 | |
704 | /* | |
705 | * XXX what is the right thing to do for FIDs? | |
706 | * The originator might expect our S_ID to be 0xfffffe. | |
707 | * But if so, both of us could end up with the same FID. | |
708 | */ | |
709 | local_fid = FC_LOCAL_PTP_FID_LO; | |
710 | if (remote_wwpn < lport->wwpn) { | |
711 | local_fid = FC_LOCAL_PTP_FID_HI; | |
712 | if (!remote_fid || remote_fid == local_fid) | |
713 | remote_fid = FC_LOCAL_PTP_FID_LO; | |
714 | } else if (!remote_fid) { | |
715 | remote_fid = FC_LOCAL_PTP_FID_HI; | |
716 | } | |
717 | ||
718 | fc_host_port_id(lport->host) = local_fid; | |
719 | ||
720 | fp = fc_frame_alloc(lport, sizeof(*flp)); | |
721 | if (fp) { | |
722 | sp = lport->tt.seq_start_next(fr_seq(rx_fp)); | |
723 | new_flp = fc_frame_payload_get(fp, sizeof(*flp)); | |
724 | fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI); | |
725 | new_flp->fl_cmd = (u8) ELS_LS_ACC; | |
726 | ||
727 | /* | |
728 | * Send the response. If this fails, the originator should | |
729 | * repeat the sequence. | |
730 | */ | |
731 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; | |
732 | ep = fc_seq_exch(sp); | |
733 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
734 | FC_TYPE_ELS, f_ctl, 0); | |
735 | lport->tt.seq_send(lport, sp, fp); | |
736 | ||
737 | } else { | |
738 | fc_lport_error(lport, fp); | |
739 | } | |
740 | fc_lport_ptp_setup(lport, remote_fid, remote_wwpn, | |
741 | get_unaligned_be64(&flp->fl_wwnn)); | |
742 | ||
42e9a92f RL |
743 | out: |
744 | sp = fr_seq(rx_fp); | |
745 | fc_frame_free(rx_fp); | |
746 | } | |
747 | ||
748 | /** | |
34f42a07 | 749 | * fc_lport_recv_req() - The generic lport request handler |
42e9a92f RL |
750 | * @lport: The lport that received the request |
751 | * @sp: The sequence the request is on | |
752 | * @fp: The frame the request is in | |
753 | * | |
754 | * This function will see if the lport handles the request or | |
755 | * if an rport should handle the request. | |
756 | * | |
757 | * Locking Note: This function should not be called with the lport | |
758 | * lock held becuase it will grab the lock. | |
759 | */ | |
760 | static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp, | |
761 | struct fc_frame *fp) | |
762 | { | |
763 | struct fc_frame_header *fh = fc_frame_header_get(fp); | |
764 | void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *); | |
42e9a92f RL |
765 | |
766 | mutex_lock(&lport->lp_mutex); | |
767 | ||
768 | /* | |
769 | * Handle special ELS cases like FLOGI, LOGO, and | |
770 | * RSCN here. These don't require a session. | |
771 | * Even if we had a session, it might not be ready. | |
772 | */ | |
e9ba8b42 JE |
773 | if (!lport->link_up) |
774 | fc_frame_free(fp); | |
775 | else if (fh->fh_type == FC_TYPE_ELS && | |
776 | fh->fh_r_ctl == FC_RCTL_ELS_REQ) { | |
42e9a92f RL |
777 | /* |
778 | * Check opcode. | |
779 | */ | |
131203a1 | 780 | recv = lport->tt.rport_recv_req; |
42e9a92f RL |
781 | switch (fc_frame_payload_op(fp)) { |
782 | case ELS_FLOGI: | |
783 | recv = fc_lport_recv_flogi_req; | |
784 | break; | |
785 | case ELS_LOGO: | |
786 | fh = fc_frame_header_get(fp); | |
787 | if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) | |
788 | recv = fc_lport_recv_logo_req; | |
789 | break; | |
790 | case ELS_RSCN: | |
791 | recv = lport->tt.disc_recv_req; | |
792 | break; | |
793 | case ELS_ECHO: | |
794 | recv = fc_lport_recv_echo_req; | |
795 | break; | |
796 | case ELS_RLIR: | |
797 | recv = fc_lport_recv_rlir_req; | |
798 | break; | |
799 | case ELS_RNID: | |
800 | recv = fc_lport_recv_rnid_req; | |
801 | break; | |
42e9a92f RL |
802 | } |
803 | ||
131203a1 | 804 | recv(sp, fp, lport); |
42e9a92f | 805 | } else { |
7414705e RL |
806 | FC_LPORT_DBG(lport, "dropping invalid frame (eof %x)\n", |
807 | fr_eof(fp)); | |
42e9a92f RL |
808 | fc_frame_free(fp); |
809 | } | |
810 | mutex_unlock(&lport->lp_mutex); | |
811 | ||
812 | /* | |
813 | * The common exch_done for all request may not be good | |
814 | * if any request requires longer hold on exhange. XXX | |
815 | */ | |
816 | lport->tt.exch_done(sp); | |
817 | } | |
818 | ||
819 | /** | |
34f42a07 | 820 | * fc_lport_reset() - Reset an lport |
42e9a92f RL |
821 | * @lport: The lport which should be reset |
822 | * | |
823 | * Locking Note: This functions should not be called with the | |
824 | * lport lock held. | |
825 | */ | |
826 | int fc_lport_reset(struct fc_lport *lport) | |
827 | { | |
f7db2c15 | 828 | cancel_delayed_work_sync(&lport->retry_work); |
42e9a92f RL |
829 | mutex_lock(&lport->lp_mutex); |
830 | fc_lport_enter_reset(lport); | |
831 | mutex_unlock(&lport->lp_mutex); | |
832 | return 0; | |
833 | } | |
834 | EXPORT_SYMBOL(fc_lport_reset); | |
835 | ||
836 | /** | |
1190d925 | 837 | * fc_lport_reset_locked() - Reset the local port |
42e9a92f RL |
838 | * @lport: Fibre Channel local port to be reset |
839 | * | |
840 | * Locking Note: The lport lock is expected to be held before calling | |
841 | * this routine. | |
842 | */ | |
1190d925 | 843 | static void fc_lport_reset_locked(struct fc_lport *lport) |
42e9a92f | 844 | { |
42e9a92f RL |
845 | if (lport->dns_rp) |
846 | lport->tt.rport_logoff(lport->dns_rp); | |
847 | ||
48f00902 | 848 | lport->ptp_rp = NULL; |
42e9a92f RL |
849 | |
850 | lport->tt.disc_stop(lport); | |
851 | ||
1f6ff364 | 852 | lport->tt.exch_mgr_reset(lport, 0, 0); |
42e9a92f RL |
853 | fc_host_fabric_name(lport->host) = 0; |
854 | fc_host_port_id(lport->host) = 0; | |
1190d925 | 855 | } |
42e9a92f | 856 | |
1190d925 JE |
857 | /** |
858 | * fc_lport_enter_reset() - Reset the local port | |
859 | * @lport: Fibre Channel local port to be reset | |
860 | * | |
861 | * Locking Note: The lport lock is expected to be held before calling | |
862 | * this routine. | |
863 | */ | |
864 | static void fc_lport_enter_reset(struct fc_lport *lport) | |
865 | { | |
866 | FC_LPORT_DBG(lport, "Entered RESET state from %s state\n", | |
867 | fc_lport_state(lport)); | |
868 | ||
869 | fc_lport_state_enter(lport, LPORT_ST_RESET); | |
870 | fc_lport_reset_locked(lport); | |
bc0e17f6 | 871 | if (lport->link_up) |
42e9a92f RL |
872 | fc_lport_enter_flogi(lport); |
873 | } | |
874 | ||
1190d925 JE |
875 | /** |
876 | * fc_lport_enter_disabled() - disable the local port | |
877 | * @lport: Fibre Channel local port to be reset | |
878 | * | |
879 | * Locking Note: The lport lock is expected to be held before calling | |
880 | * this routine. | |
881 | */ | |
882 | static void fc_lport_enter_disabled(struct fc_lport *lport) | |
883 | { | |
884 | FC_LPORT_DBG(lport, "Entered disabled state from %s state\n", | |
885 | fc_lport_state(lport)); | |
886 | ||
887 | fc_lport_state_enter(lport, LPORT_ST_DISABLED); | |
888 | fc_lport_reset_locked(lport); | |
889 | } | |
890 | ||
42e9a92f | 891 | /** |
34f42a07 | 892 | * fc_lport_error() - Handler for any errors |
42e9a92f RL |
893 | * @lport: The fc_lport object |
894 | * @fp: The frame pointer | |
895 | * | |
896 | * If the error was caused by a resource allocation failure | |
897 | * then wait for half a second and retry, otherwise retry | |
898 | * after the e_d_tov time. | |
899 | */ | |
900 | static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp) | |
901 | { | |
902 | unsigned long delay = 0; | |
7414705e RL |
903 | FC_LPORT_DBG(lport, "Error %ld in state %s, retries %d\n", |
904 | PTR_ERR(fp), fc_lport_state(lport), | |
905 | lport->retry_count); | |
42e9a92f RL |
906 | |
907 | if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) { | |
908 | /* | |
909 | * Memory allocation failure, or the exchange timed out. | |
910 | * Retry after delay | |
911 | */ | |
912 | if (lport->retry_count < lport->max_retry_count) { | |
913 | lport->retry_count++; | |
914 | if (!fp) | |
915 | delay = msecs_to_jiffies(500); | |
916 | else | |
917 | delay = msecs_to_jiffies(lport->e_d_tov); | |
918 | ||
919 | schedule_delayed_work(&lport->retry_work, delay); | |
920 | } else { | |
921 | switch (lport->state) { | |
b1d9fd55 | 922 | case LPORT_ST_DISABLED: |
42e9a92f RL |
923 | case LPORT_ST_READY: |
924 | case LPORT_ST_RESET: | |
925 | case LPORT_ST_RPN_ID: | |
926 | case LPORT_ST_RFT_ID: | |
927 | case LPORT_ST_SCR: | |
928 | case LPORT_ST_DNS: | |
929 | case LPORT_ST_FLOGI: | |
930 | case LPORT_ST_LOGO: | |
931 | fc_lport_enter_reset(lport); | |
932 | break; | |
933 | } | |
934 | } | |
935 | } | |
936 | } | |
937 | ||
938 | /** | |
34f42a07 RL |
939 | * fc_lport_rft_id_resp() - Handle response to Register Fibre |
940 | * Channel Types by ID (RPN_ID) request | |
42e9a92f RL |
941 | * @sp: current sequence in RPN_ID exchange |
942 | * @fp: response frame | |
943 | * @lp_arg: Fibre Channel host port instance | |
944 | * | |
945 | * Locking Note: This function will be called without the lport lock | |
946 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
947 | * and then unlock the lport. | |
948 | */ | |
949 | static void fc_lport_rft_id_resp(struct fc_seq *sp, struct fc_frame *fp, | |
950 | void *lp_arg) | |
951 | { | |
952 | struct fc_lport *lport = lp_arg; | |
953 | struct fc_frame_header *fh; | |
954 | struct fc_ct_hdr *ct; | |
955 | ||
f657d299 JE |
956 | FC_LPORT_DBG(lport, "Received a RFT_ID %s\n", fc_els_resp_type(fp)); |
957 | ||
42e9a92f RL |
958 | if (fp == ERR_PTR(-FC_EX_CLOSED)) |
959 | return; | |
960 | ||
961 | mutex_lock(&lport->lp_mutex); | |
962 | ||
42e9a92f | 963 | if (lport->state != LPORT_ST_RFT_ID) { |
7414705e RL |
964 | FC_LPORT_DBG(lport, "Received a RFT_ID response, but in state " |
965 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
966 | if (IS_ERR(fp)) |
967 | goto err; | |
42e9a92f RL |
968 | goto out; |
969 | } | |
970 | ||
76f6804e AJ |
971 | if (IS_ERR(fp)) { |
972 | fc_lport_error(lport, fp); | |
973 | goto err; | |
974 | } | |
975 | ||
42e9a92f RL |
976 | fh = fc_frame_header_get(fp); |
977 | ct = fc_frame_payload_get(fp, sizeof(*ct)); | |
978 | ||
979 | if (fh && ct && fh->fh_type == FC_TYPE_CT && | |
980 | ct->ct_fs_type == FC_FST_DIR && | |
981 | ct->ct_fs_subtype == FC_NS_SUBTYPE && | |
982 | ntohs(ct->ct_cmd) == FC_FS_ACC) | |
983 | fc_lport_enter_scr(lport); | |
984 | else | |
985 | fc_lport_error(lport, fp); | |
986 | out: | |
987 | fc_frame_free(fp); | |
988 | err: | |
989 | mutex_unlock(&lport->lp_mutex); | |
990 | } | |
991 | ||
992 | /** | |
34f42a07 RL |
993 | * fc_lport_rpn_id_resp() - Handle response to Register Port |
994 | * Name by ID (RPN_ID) request | |
42e9a92f RL |
995 | * @sp: current sequence in RPN_ID exchange |
996 | * @fp: response frame | |
997 | * @lp_arg: Fibre Channel host port instance | |
998 | * | |
999 | * Locking Note: This function will be called without the lport lock | |
1000 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1001 | * and then unlock the lport. | |
1002 | */ | |
1003 | static void fc_lport_rpn_id_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1004 | void *lp_arg) | |
1005 | { | |
1006 | struct fc_lport *lport = lp_arg; | |
1007 | struct fc_frame_header *fh; | |
1008 | struct fc_ct_hdr *ct; | |
1009 | ||
f657d299 JE |
1010 | FC_LPORT_DBG(lport, "Received a RPN_ID %s\n", fc_els_resp_type(fp)); |
1011 | ||
42e9a92f RL |
1012 | if (fp == ERR_PTR(-FC_EX_CLOSED)) |
1013 | return; | |
1014 | ||
1015 | mutex_lock(&lport->lp_mutex); | |
1016 | ||
42e9a92f | 1017 | if (lport->state != LPORT_ST_RPN_ID) { |
7414705e RL |
1018 | FC_LPORT_DBG(lport, "Received a RPN_ID response, but in state " |
1019 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1020 | if (IS_ERR(fp)) |
1021 | goto err; | |
42e9a92f RL |
1022 | goto out; |
1023 | } | |
1024 | ||
76f6804e AJ |
1025 | if (IS_ERR(fp)) { |
1026 | fc_lport_error(lport, fp); | |
1027 | goto err; | |
1028 | } | |
1029 | ||
42e9a92f RL |
1030 | fh = fc_frame_header_get(fp); |
1031 | ct = fc_frame_payload_get(fp, sizeof(*ct)); | |
1032 | if (fh && ct && fh->fh_type == FC_TYPE_CT && | |
1033 | ct->ct_fs_type == FC_FST_DIR && | |
1034 | ct->ct_fs_subtype == FC_NS_SUBTYPE && | |
1035 | ntohs(ct->ct_cmd) == FC_FS_ACC) | |
1036 | fc_lport_enter_rft_id(lport); | |
1037 | else | |
1038 | fc_lport_error(lport, fp); | |
1039 | ||
1040 | out: | |
1041 | fc_frame_free(fp); | |
1042 | err: | |
1043 | mutex_unlock(&lport->lp_mutex); | |
1044 | } | |
1045 | ||
1046 | /** | |
34f42a07 | 1047 | * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request |
42e9a92f RL |
1048 | * @sp: current sequence in SCR exchange |
1049 | * @fp: response frame | |
1050 | * @lp_arg: Fibre Channel lport port instance that sent the registration request | |
1051 | * | |
1052 | * Locking Note: This function will be called without the lport lock | |
1053 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1054 | * and then unlock the lport. | |
1055 | */ | |
1056 | static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1057 | void *lp_arg) | |
1058 | { | |
1059 | struct fc_lport *lport = lp_arg; | |
1060 | u8 op; | |
1061 | ||
f657d299 JE |
1062 | FC_LPORT_DBG(lport, "Received a SCR %s\n", fc_els_resp_type(fp)); |
1063 | ||
42e9a92f RL |
1064 | if (fp == ERR_PTR(-FC_EX_CLOSED)) |
1065 | return; | |
1066 | ||
1067 | mutex_lock(&lport->lp_mutex); | |
1068 | ||
42e9a92f | 1069 | if (lport->state != LPORT_ST_SCR) { |
7414705e RL |
1070 | FC_LPORT_DBG(lport, "Received a SCR response, but in state " |
1071 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1072 | if (IS_ERR(fp)) |
1073 | goto err; | |
42e9a92f RL |
1074 | goto out; |
1075 | } | |
1076 | ||
76f6804e AJ |
1077 | if (IS_ERR(fp)) { |
1078 | fc_lport_error(lport, fp); | |
1079 | goto err; | |
1080 | } | |
1081 | ||
42e9a92f RL |
1082 | op = fc_frame_payload_op(fp); |
1083 | if (op == ELS_LS_ACC) | |
1084 | fc_lport_enter_ready(lport); | |
1085 | else | |
1086 | fc_lport_error(lport, fp); | |
1087 | ||
1088 | out: | |
1089 | fc_frame_free(fp); | |
1090 | err: | |
1091 | mutex_unlock(&lport->lp_mutex); | |
1092 | } | |
1093 | ||
1094 | /** | |
34f42a07 | 1095 | * fc_lport_enter_scr() - Send a State Change Register (SCR) request |
42e9a92f RL |
1096 | * @lport: Fibre Channel local port to register for state changes |
1097 | * | |
1098 | * Locking Note: The lport lock is expected to be held before calling | |
1099 | * this routine. | |
1100 | */ | |
1101 | static void fc_lport_enter_scr(struct fc_lport *lport) | |
1102 | { | |
1103 | struct fc_frame *fp; | |
1104 | ||
7414705e RL |
1105 | FC_LPORT_DBG(lport, "Entered SCR state from %s state\n", |
1106 | fc_lport_state(lport)); | |
42e9a92f RL |
1107 | |
1108 | fc_lport_state_enter(lport, LPORT_ST_SCR); | |
1109 | ||
1110 | fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr)); | |
1111 | if (!fp) { | |
1112 | fc_lport_error(lport, fp); | |
1113 | return; | |
1114 | } | |
1115 | ||
a46f327a | 1116 | if (!lport->tt.elsct_send(lport, FC_FID_FCTRL, fp, ELS_SCR, |
42e9a92f RL |
1117 | fc_lport_scr_resp, lport, lport->e_d_tov)) |
1118 | fc_lport_error(lport, fp); | |
1119 | } | |
1120 | ||
1121 | /** | |
34f42a07 | 1122 | * fc_lport_enter_rft_id() - Register FC4-types with the name server |
42e9a92f RL |
1123 | * @lport: Fibre Channel local port to register |
1124 | * | |
1125 | * Locking Note: The lport lock is expected to be held before calling | |
1126 | * this routine. | |
1127 | */ | |
1128 | static void fc_lport_enter_rft_id(struct fc_lport *lport) | |
1129 | { | |
1130 | struct fc_frame *fp; | |
1131 | struct fc_ns_fts *lps; | |
1132 | int i; | |
1133 | ||
7414705e RL |
1134 | FC_LPORT_DBG(lport, "Entered RFT_ID state from %s state\n", |
1135 | fc_lport_state(lport)); | |
42e9a92f RL |
1136 | |
1137 | fc_lport_state_enter(lport, LPORT_ST_RFT_ID); | |
1138 | ||
1139 | lps = &lport->fcts; | |
1140 | i = sizeof(lps->ff_type_map) / sizeof(lps->ff_type_map[0]); | |
1141 | while (--i >= 0) | |
1142 | if (ntohl(lps->ff_type_map[i]) != 0) | |
1143 | break; | |
1144 | if (i < 0) { | |
1145 | /* nothing to register, move on to SCR */ | |
1146 | fc_lport_enter_scr(lport); | |
1147 | return; | |
1148 | } | |
1149 | ||
1150 | fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + | |
1151 | sizeof(struct fc_ns_rft)); | |
1152 | if (!fp) { | |
1153 | fc_lport_error(lport, fp); | |
1154 | return; | |
1155 | } | |
1156 | ||
a46f327a | 1157 | if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RFT_ID, |
42e9a92f RL |
1158 | fc_lport_rft_id_resp, |
1159 | lport, lport->e_d_tov)) | |
1160 | fc_lport_error(lport, fp); | |
1161 | } | |
1162 | ||
1163 | /** | |
34f42a07 | 1164 | * fc_rport_enter_rft_id() - Register port name with the name server |
42e9a92f RL |
1165 | * @lport: Fibre Channel local port to register |
1166 | * | |
1167 | * Locking Note: The lport lock is expected to be held before calling | |
1168 | * this routine. | |
1169 | */ | |
1170 | static void fc_lport_enter_rpn_id(struct fc_lport *lport) | |
1171 | { | |
1172 | struct fc_frame *fp; | |
1173 | ||
7414705e RL |
1174 | FC_LPORT_DBG(lport, "Entered RPN_ID state from %s state\n", |
1175 | fc_lport_state(lport)); | |
42e9a92f RL |
1176 | |
1177 | fc_lport_state_enter(lport, LPORT_ST_RPN_ID); | |
1178 | ||
1179 | fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + | |
1180 | sizeof(struct fc_ns_rn_id)); | |
1181 | if (!fp) { | |
1182 | fc_lport_error(lport, fp); | |
1183 | return; | |
1184 | } | |
1185 | ||
a46f327a | 1186 | if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RPN_ID, |
42e9a92f RL |
1187 | fc_lport_rpn_id_resp, |
1188 | lport, lport->e_d_tov)) | |
1189 | fc_lport_error(lport, fp); | |
1190 | } | |
1191 | ||
1192 | static struct fc_rport_operations fc_lport_rport_ops = { | |
1193 | .event_callback = fc_lport_rport_callback, | |
1194 | }; | |
1195 | ||
1196 | /** | |
34f42a07 | 1197 | * fc_rport_enter_dns() - Create a rport to the name server |
42e9a92f RL |
1198 | * @lport: Fibre Channel local port requesting a rport for the name server |
1199 | * | |
1200 | * Locking Note: The lport lock is expected to be held before calling | |
1201 | * this routine. | |
1202 | */ | |
1203 | static void fc_lport_enter_dns(struct fc_lport *lport) | |
1204 | { | |
ab28f1fd | 1205 | struct fc_rport_priv *rdata; |
42e9a92f | 1206 | |
7414705e RL |
1207 | FC_LPORT_DBG(lport, "Entered DNS state from %s state\n", |
1208 | fc_lport_state(lport)); | |
42e9a92f RL |
1209 | |
1210 | fc_lport_state_enter(lport, LPORT_ST_DNS); | |
1211 | ||
48f00902 | 1212 | mutex_lock(&lport->disc.disc_mutex); |
9737e6a7 | 1213 | rdata = lport->tt.rport_create(lport, FC_FID_DIR_SERV); |
48f00902 | 1214 | mutex_unlock(&lport->disc.disc_mutex); |
9fb9d328 | 1215 | if (!rdata) |
42e9a92f RL |
1216 | goto err; |
1217 | ||
42e9a92f | 1218 | rdata->ops = &fc_lport_rport_ops; |
9fb9d328 | 1219 | lport->tt.rport_login(rdata); |
42e9a92f RL |
1220 | return; |
1221 | ||
1222 | err: | |
1223 | fc_lport_error(lport, NULL); | |
1224 | } | |
1225 | ||
1226 | /** | |
34f42a07 | 1227 | * fc_lport_timeout() - Handler for the retry_work timer. |
42e9a92f RL |
1228 | * @work: The work struct of the fc_lport |
1229 | */ | |
1230 | static void fc_lport_timeout(struct work_struct *work) | |
1231 | { | |
1232 | struct fc_lport *lport = | |
1233 | container_of(work, struct fc_lport, | |
1234 | retry_work.work); | |
1235 | ||
1236 | mutex_lock(&lport->lp_mutex); | |
1237 | ||
1238 | switch (lport->state) { | |
b1d9fd55 | 1239 | case LPORT_ST_DISABLED: |
42e9a92f RL |
1240 | case LPORT_ST_READY: |
1241 | case LPORT_ST_RESET: | |
1242 | WARN_ON(1); | |
1243 | break; | |
1244 | case LPORT_ST_FLOGI: | |
1245 | fc_lport_enter_flogi(lport); | |
1246 | break; | |
1247 | case LPORT_ST_DNS: | |
1248 | fc_lport_enter_dns(lport); | |
1249 | break; | |
1250 | case LPORT_ST_RPN_ID: | |
1251 | fc_lport_enter_rpn_id(lport); | |
1252 | break; | |
1253 | case LPORT_ST_RFT_ID: | |
1254 | fc_lport_enter_rft_id(lport); | |
1255 | break; | |
1256 | case LPORT_ST_SCR: | |
1257 | fc_lport_enter_scr(lport); | |
1258 | break; | |
1259 | case LPORT_ST_LOGO: | |
1260 | fc_lport_enter_logo(lport); | |
1261 | break; | |
1262 | } | |
1263 | ||
1264 | mutex_unlock(&lport->lp_mutex); | |
1265 | } | |
1266 | ||
1267 | /** | |
34f42a07 | 1268 | * fc_lport_logo_resp() - Handle response to LOGO request |
42e9a92f RL |
1269 | * @sp: current sequence in LOGO exchange |
1270 | * @fp: response frame | |
1271 | * @lp_arg: Fibre Channel lport port instance that sent the LOGO request | |
1272 | * | |
1273 | * Locking Note: This function will be called without the lport lock | |
1274 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1275 | * and then unlock the lport. | |
1276 | */ | |
1277 | static void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1278 | void *lp_arg) | |
1279 | { | |
1280 | struct fc_lport *lport = lp_arg; | |
1281 | u8 op; | |
1282 | ||
f657d299 JE |
1283 | FC_LPORT_DBG(lport, "Received a LOGO %s\n", fc_els_resp_type(fp)); |
1284 | ||
42e9a92f RL |
1285 | if (fp == ERR_PTR(-FC_EX_CLOSED)) |
1286 | return; | |
1287 | ||
1288 | mutex_lock(&lport->lp_mutex); | |
1289 | ||
42e9a92f | 1290 | if (lport->state != LPORT_ST_LOGO) { |
7414705e RL |
1291 | FC_LPORT_DBG(lport, "Received a LOGO response, but in state " |
1292 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1293 | if (IS_ERR(fp)) |
1294 | goto err; | |
42e9a92f RL |
1295 | goto out; |
1296 | } | |
1297 | ||
76f6804e AJ |
1298 | if (IS_ERR(fp)) { |
1299 | fc_lport_error(lport, fp); | |
1300 | goto err; | |
1301 | } | |
1302 | ||
42e9a92f RL |
1303 | op = fc_frame_payload_op(fp); |
1304 | if (op == ELS_LS_ACC) | |
1190d925 | 1305 | fc_lport_enter_disabled(lport); |
42e9a92f RL |
1306 | else |
1307 | fc_lport_error(lport, fp); | |
1308 | ||
1309 | out: | |
1310 | fc_frame_free(fp); | |
1311 | err: | |
1312 | mutex_unlock(&lport->lp_mutex); | |
1313 | } | |
1314 | ||
1315 | /** | |
34f42a07 | 1316 | * fc_rport_enter_logo() - Logout of the fabric |
42e9a92f RL |
1317 | * @lport: Fibre Channel local port to be logged out |
1318 | * | |
1319 | * Locking Note: The lport lock is expected to be held before calling | |
1320 | * this routine. | |
1321 | */ | |
1322 | static void fc_lport_enter_logo(struct fc_lport *lport) | |
1323 | { | |
1324 | struct fc_frame *fp; | |
1325 | struct fc_els_logo *logo; | |
1326 | ||
7414705e RL |
1327 | FC_LPORT_DBG(lport, "Entered LOGO state from %s state\n", |
1328 | fc_lport_state(lport)); | |
42e9a92f RL |
1329 | |
1330 | fc_lport_state_enter(lport, LPORT_ST_LOGO); | |
1331 | ||
42e9a92f RL |
1332 | fp = fc_frame_alloc(lport, sizeof(*logo)); |
1333 | if (!fp) { | |
1334 | fc_lport_error(lport, fp); | |
1335 | return; | |
1336 | } | |
1337 | ||
a46f327a JE |
1338 | if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, ELS_LOGO, |
1339 | fc_lport_logo_resp, lport, lport->e_d_tov)) | |
42e9a92f RL |
1340 | fc_lport_error(lport, fp); |
1341 | } | |
1342 | ||
1343 | /** | |
34f42a07 | 1344 | * fc_lport_flogi_resp() - Handle response to FLOGI request |
42e9a92f RL |
1345 | * @sp: current sequence in FLOGI exchange |
1346 | * @fp: response frame | |
1347 | * @lp_arg: Fibre Channel lport port instance that sent the FLOGI request | |
1348 | * | |
1349 | * Locking Note: This function will be called without the lport lock | |
1350 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1351 | * and then unlock the lport. | |
1352 | */ | |
1353 | static void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1354 | void *lp_arg) | |
1355 | { | |
1356 | struct fc_lport *lport = lp_arg; | |
1357 | struct fc_frame_header *fh; | |
1358 | struct fc_els_flogi *flp; | |
1359 | u32 did; | |
1360 | u16 csp_flags; | |
1361 | unsigned int r_a_tov; | |
1362 | unsigned int e_d_tov; | |
1363 | u16 mfs; | |
1364 | ||
f657d299 JE |
1365 | FC_LPORT_DBG(lport, "Received a FLOGI %s\n", fc_els_resp_type(fp)); |
1366 | ||
42e9a92f RL |
1367 | if (fp == ERR_PTR(-FC_EX_CLOSED)) |
1368 | return; | |
1369 | ||
1370 | mutex_lock(&lport->lp_mutex); | |
1371 | ||
42e9a92f | 1372 | if (lport->state != LPORT_ST_FLOGI) { |
7414705e RL |
1373 | FC_LPORT_DBG(lport, "Received a FLOGI response, but in state " |
1374 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1375 | if (IS_ERR(fp)) |
1376 | goto err; | |
42e9a92f RL |
1377 | goto out; |
1378 | } | |
1379 | ||
76f6804e AJ |
1380 | if (IS_ERR(fp)) { |
1381 | fc_lport_error(lport, fp); | |
1382 | goto err; | |
1383 | } | |
1384 | ||
42e9a92f RL |
1385 | fh = fc_frame_header_get(fp); |
1386 | did = ntoh24(fh->fh_d_id); | |
1387 | if (fc_frame_payload_op(fp) == ELS_LS_ACC && did != 0) { | |
1388 | ||
7414705e RL |
1389 | printk(KERN_INFO "libfc: Assigned FID (%6x) in FLOGI response\n", |
1390 | did); | |
42e9a92f RL |
1391 | fc_host_port_id(lport->host) = did; |
1392 | ||
1393 | flp = fc_frame_payload_get(fp, sizeof(*flp)); | |
1394 | if (flp) { | |
1395 | mfs = ntohs(flp->fl_csp.sp_bb_data) & | |
1396 | FC_SP_BB_DATA_MASK; | |
1397 | if (mfs >= FC_SP_MIN_MAX_PAYLOAD && | |
1398 | mfs < lport->mfs) | |
1399 | lport->mfs = mfs; | |
1400 | csp_flags = ntohs(flp->fl_csp.sp_features); | |
1401 | r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov); | |
1402 | e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov); | |
1403 | if (csp_flags & FC_SP_FT_EDTR) | |
1404 | e_d_tov /= 1000000; | |
1405 | if ((csp_flags & FC_SP_FT_FPORT) == 0) { | |
1406 | if (e_d_tov > lport->e_d_tov) | |
1407 | lport->e_d_tov = e_d_tov; | |
1408 | lport->r_a_tov = 2 * e_d_tov; | |
7414705e RL |
1409 | printk(KERN_INFO "libfc: Port (%6x) entered " |
1410 | "point to point mode\n", did); | |
42e9a92f RL |
1411 | fc_lport_ptp_setup(lport, ntoh24(fh->fh_s_id), |
1412 | get_unaligned_be64( | |
1413 | &flp->fl_wwpn), | |
1414 | get_unaligned_be64( | |
1415 | &flp->fl_wwnn)); | |
1416 | } else { | |
1417 | lport->e_d_tov = e_d_tov; | |
1418 | lport->r_a_tov = r_a_tov; | |
1419 | fc_host_fabric_name(lport->host) = | |
1420 | get_unaligned_be64(&flp->fl_wwnn); | |
1421 | fc_lport_enter_dns(lport); | |
1422 | } | |
1423 | } | |
42e9a92f | 1424 | } else { |
7414705e | 1425 | FC_LPORT_DBG(lport, "Bad FLOGI response\n"); |
42e9a92f RL |
1426 | } |
1427 | ||
1428 | out: | |
1429 | fc_frame_free(fp); | |
1430 | err: | |
1431 | mutex_unlock(&lport->lp_mutex); | |
1432 | } | |
1433 | ||
1434 | /** | |
34f42a07 | 1435 | * fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager |
42e9a92f RL |
1436 | * @lport: Fibre Channel local port to be logged in to the fabric |
1437 | * | |
1438 | * Locking Note: The lport lock is expected to be held before calling | |
1439 | * this routine. | |
1440 | */ | |
1441 | void fc_lport_enter_flogi(struct fc_lport *lport) | |
1442 | { | |
1443 | struct fc_frame *fp; | |
1444 | ||
7414705e RL |
1445 | FC_LPORT_DBG(lport, "Entered FLOGI state from %s state\n", |
1446 | fc_lport_state(lport)); | |
42e9a92f RL |
1447 | |
1448 | fc_lport_state_enter(lport, LPORT_ST_FLOGI); | |
1449 | ||
1450 | fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); | |
1451 | if (!fp) | |
1452 | return fc_lport_error(lport, fp); | |
1453 | ||
a46f327a | 1454 | if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, ELS_FLOGI, |
42e9a92f RL |
1455 | fc_lport_flogi_resp, lport, lport->e_d_tov)) |
1456 | fc_lport_error(lport, fp); | |
1457 | } | |
1458 | ||
1459 | /* Configure a fc_lport */ | |
1460 | int fc_lport_config(struct fc_lport *lport) | |
1461 | { | |
1462 | INIT_DELAYED_WORK(&lport->retry_work, fc_lport_timeout); | |
1463 | mutex_init(&lport->lp_mutex); | |
1464 | ||
b1d9fd55 | 1465 | fc_lport_state_enter(lport, LPORT_ST_DISABLED); |
42e9a92f RL |
1466 | |
1467 | fc_lport_add_fc4_type(lport, FC_TYPE_FCP); | |
1468 | fc_lport_add_fc4_type(lport, FC_TYPE_CT); | |
1469 | ||
1470 | return 0; | |
1471 | } | |
1472 | EXPORT_SYMBOL(fc_lport_config); | |
1473 | ||
1474 | int fc_lport_init(struct fc_lport *lport) | |
1475 | { | |
1476 | if (!lport->tt.lport_recv) | |
1477 | lport->tt.lport_recv = fc_lport_recv_req; | |
1478 | ||
1479 | if (!lport->tt.lport_reset) | |
1480 | lport->tt.lport_reset = fc_lport_reset; | |
1481 | ||
1482 | fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; | |
1483 | fc_host_node_name(lport->host) = lport->wwnn; | |
1484 | fc_host_port_name(lport->host) = lport->wwpn; | |
1485 | fc_host_supported_classes(lport->host) = FC_COS_CLASS3; | |
1486 | memset(fc_host_supported_fc4s(lport->host), 0, | |
1487 | sizeof(fc_host_supported_fc4s(lport->host))); | |
1488 | fc_host_supported_fc4s(lport->host)[2] = 1; | |
1489 | fc_host_supported_fc4s(lport->host)[7] = 1; | |
1490 | ||
1491 | /* This value is also unchanging */ | |
1492 | memset(fc_host_active_fc4s(lport->host), 0, | |
1493 | sizeof(fc_host_active_fc4s(lport->host))); | |
1494 | fc_host_active_fc4s(lport->host)[2] = 1; | |
1495 | fc_host_active_fc4s(lport->host)[7] = 1; | |
1496 | fc_host_maxframe_size(lport->host) = lport->mfs; | |
1497 | fc_host_supported_speeds(lport->host) = 0; | |
1498 | if (lport->link_supported_speeds & FC_PORTSPEED_1GBIT) | |
1499 | fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_1GBIT; | |
1500 | if (lport->link_supported_speeds & FC_PORTSPEED_10GBIT) | |
1501 | fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_10GBIT; | |
1502 | ||
96316099 | 1503 | INIT_LIST_HEAD(&lport->ema_list); |
42e9a92f RL |
1504 | return 0; |
1505 | } | |
1506 | EXPORT_SYMBOL(fc_lport_init); |