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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 | ||
104 | static int fc_lport_debug; | |
105 | ||
106 | #define FC_DEBUG_LPORT(fmt...) \ | |
107 | do { \ | |
108 | if (fc_lport_debug) \ | |
109 | FC_DBG(fmt); \ | |
110 | } while (0) | |
111 | ||
112 | static void fc_lport_error(struct fc_lport *, struct fc_frame *); | |
113 | ||
114 | static void fc_lport_enter_reset(struct fc_lport *); | |
115 | static void fc_lport_enter_flogi(struct fc_lport *); | |
116 | static void fc_lport_enter_dns(struct fc_lport *); | |
117 | static void fc_lport_enter_rpn_id(struct fc_lport *); | |
118 | static void fc_lport_enter_rft_id(struct fc_lport *); | |
119 | static void fc_lport_enter_scr(struct fc_lport *); | |
120 | static void fc_lport_enter_ready(struct fc_lport *); | |
121 | static void fc_lport_enter_logo(struct fc_lport *); | |
122 | ||
123 | static const char *fc_lport_state_names[] = { | |
124 | [LPORT_ST_NONE] = "none", | |
125 | [LPORT_ST_FLOGI] = "FLOGI", | |
126 | [LPORT_ST_DNS] = "dNS", | |
127 | [LPORT_ST_RPN_ID] = "RPN_ID", | |
128 | [LPORT_ST_RFT_ID] = "RFT_ID", | |
129 | [LPORT_ST_SCR] = "SCR", | |
130 | [LPORT_ST_READY] = "Ready", | |
131 | [LPORT_ST_LOGO] = "LOGO", | |
132 | [LPORT_ST_RESET] = "reset", | |
133 | }; | |
134 | ||
135 | static int fc_frame_drop(struct fc_lport *lport, struct fc_frame *fp) | |
136 | { | |
137 | fc_frame_free(fp); | |
138 | return 0; | |
139 | } | |
140 | ||
141 | /** | |
34f42a07 | 142 | * fc_lport_rport_callback() - Event handler for rport events |
42e9a92f RL |
143 | * @lport: The lport which is receiving the event |
144 | * @rport: The rport which the event has occured on | |
145 | * @event: The event that occured | |
146 | * | |
147 | * Locking Note: The rport lock should not be held when calling | |
148 | * this function. | |
149 | */ | |
150 | static void fc_lport_rport_callback(struct fc_lport *lport, | |
151 | struct fc_rport *rport, | |
152 | enum fc_rport_event event) | |
153 | { | |
154 | FC_DEBUG_LPORT("Received a %d event for port (%6x)\n", event, | |
155 | rport->port_id); | |
156 | ||
157 | switch (event) { | |
158 | case RPORT_EV_CREATED: | |
159 | if (rport->port_id == FC_FID_DIR_SERV) { | |
160 | mutex_lock(&lport->lp_mutex); | |
161 | if (lport->state == LPORT_ST_DNS) { | |
162 | lport->dns_rp = rport; | |
163 | fc_lport_enter_rpn_id(lport); | |
164 | } else { | |
165 | FC_DEBUG_LPORT("Received an CREATED event on " | |
166 | "port (%6x) for the directory " | |
167 | "server, but the lport is not " | |
168 | "in the DNS state, it's in the " | |
169 | "%d state", rport->port_id, | |
170 | lport->state); | |
171 | lport->tt.rport_logoff(rport); | |
172 | } | |
173 | mutex_unlock(&lport->lp_mutex); | |
174 | } else | |
175 | FC_DEBUG_LPORT("Received an event for port (%6x) " | |
176 | "which is not the directory server\n", | |
177 | rport->port_id); | |
178 | break; | |
179 | case RPORT_EV_LOGO: | |
180 | case RPORT_EV_FAILED: | |
181 | case RPORT_EV_STOP: | |
182 | if (rport->port_id == FC_FID_DIR_SERV) { | |
183 | mutex_lock(&lport->lp_mutex); | |
184 | lport->dns_rp = NULL; | |
185 | mutex_unlock(&lport->lp_mutex); | |
186 | ||
187 | } else | |
188 | FC_DEBUG_LPORT("Received an event for port (%6x) " | |
189 | "which is not the directory server\n", | |
190 | rport->port_id); | |
191 | break; | |
192 | case RPORT_EV_NONE: | |
193 | break; | |
194 | } | |
195 | } | |
196 | ||
197 | /** | |
34f42a07 | 198 | * fc_lport_state() - Return a string which represents the lport's state |
42e9a92f RL |
199 | * @lport: The lport whose state is to converted to a string |
200 | */ | |
201 | static const char *fc_lport_state(struct fc_lport *lport) | |
202 | { | |
203 | const char *cp; | |
204 | ||
205 | cp = fc_lport_state_names[lport->state]; | |
206 | if (!cp) | |
207 | cp = "unknown"; | |
208 | return cp; | |
209 | } | |
210 | ||
211 | /** | |
34f42a07 | 212 | * fc_lport_ptp_setup() - Create an rport for point-to-point mode |
42e9a92f RL |
213 | * @lport: The lport to attach the ptp rport to |
214 | * @fid: The FID of the ptp rport | |
215 | * @remote_wwpn: The WWPN of the ptp rport | |
216 | * @remote_wwnn: The WWNN of the ptp rport | |
217 | */ | |
218 | static void fc_lport_ptp_setup(struct fc_lport *lport, | |
219 | u32 remote_fid, u64 remote_wwpn, | |
220 | u64 remote_wwnn) | |
221 | { | |
222 | struct fc_disc_port dp; | |
223 | ||
224 | dp.lp = lport; | |
225 | dp.ids.port_id = remote_fid; | |
226 | dp.ids.port_name = remote_wwpn; | |
227 | dp.ids.node_name = remote_wwnn; | |
228 | dp.ids.roles = FC_RPORT_ROLE_UNKNOWN; | |
229 | ||
230 | if (lport->ptp_rp) { | |
231 | lport->tt.rport_logoff(lport->ptp_rp); | |
232 | lport->ptp_rp = NULL; | |
233 | } | |
234 | ||
5101ff99 | 235 | lport->ptp_rp = lport->tt.rport_create(&dp); |
42e9a92f RL |
236 | |
237 | lport->tt.rport_login(lport->ptp_rp); | |
238 | ||
239 | fc_lport_enter_ready(lport); | |
240 | } | |
241 | ||
242 | void fc_get_host_port_type(struct Scsi_Host *shost) | |
243 | { | |
244 | /* TODO - currently just NPORT */ | |
245 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
246 | } | |
247 | EXPORT_SYMBOL(fc_get_host_port_type); | |
248 | ||
249 | void fc_get_host_port_state(struct Scsi_Host *shost) | |
250 | { | |
251 | struct fc_lport *lp = shost_priv(shost); | |
252 | ||
bc0e17f6 | 253 | if (lp->link_up) |
42e9a92f RL |
254 | fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; |
255 | else | |
256 | fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; | |
257 | } | |
258 | EXPORT_SYMBOL(fc_get_host_port_state); | |
259 | ||
260 | void fc_get_host_speed(struct Scsi_Host *shost) | |
261 | { | |
262 | struct fc_lport *lport = shost_priv(shost); | |
263 | ||
264 | fc_host_speed(shost) = lport->link_speed; | |
265 | } | |
266 | EXPORT_SYMBOL(fc_get_host_speed); | |
267 | ||
268 | struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost) | |
269 | { | |
42e9a92f RL |
270 | struct fc_host_statistics *fcoe_stats; |
271 | struct fc_lport *lp = shost_priv(shost); | |
272 | struct timespec v0, v1; | |
582b45bc | 273 | unsigned int cpu; |
42e9a92f RL |
274 | |
275 | fcoe_stats = &lp->host_stats; | |
276 | memset(fcoe_stats, 0, sizeof(struct fc_host_statistics)); | |
277 | ||
278 | jiffies_to_timespec(jiffies, &v0); | |
279 | jiffies_to_timespec(lp->boot_time, &v1); | |
280 | fcoe_stats->seconds_since_last_reset = (v0.tv_sec - v1.tv_sec); | |
281 | ||
582b45bc RL |
282 | for_each_possible_cpu(cpu) { |
283 | struct fcoe_dev_stats *stats; | |
284 | ||
285 | stats = per_cpu_ptr(lp->dev_stats, cpu); | |
286 | ||
42e9a92f RL |
287 | fcoe_stats->tx_frames += stats->TxFrames; |
288 | fcoe_stats->tx_words += stats->TxWords; | |
289 | fcoe_stats->rx_frames += stats->RxFrames; | |
290 | fcoe_stats->rx_words += stats->RxWords; | |
291 | fcoe_stats->error_frames += stats->ErrorFrames; | |
292 | fcoe_stats->invalid_crc_count += stats->InvalidCRCCount; | |
293 | fcoe_stats->fcp_input_requests += stats->InputRequests; | |
294 | fcoe_stats->fcp_output_requests += stats->OutputRequests; | |
295 | fcoe_stats->fcp_control_requests += stats->ControlRequests; | |
296 | fcoe_stats->fcp_input_megabytes += stats->InputMegabytes; | |
297 | fcoe_stats->fcp_output_megabytes += stats->OutputMegabytes; | |
298 | fcoe_stats->link_failure_count += stats->LinkFailureCount; | |
299 | } | |
300 | fcoe_stats->lip_count = -1; | |
301 | fcoe_stats->nos_count = -1; | |
302 | fcoe_stats->loss_of_sync_count = -1; | |
303 | fcoe_stats->loss_of_signal_count = -1; | |
304 | fcoe_stats->prim_seq_protocol_err_count = -1; | |
305 | fcoe_stats->dumped_frames = -1; | |
306 | return fcoe_stats; | |
307 | } | |
308 | EXPORT_SYMBOL(fc_get_host_stats); | |
309 | ||
310 | /* | |
311 | * Fill in FLOGI command for request. | |
312 | */ | |
313 | static void | |
314 | fc_lport_flogi_fill(struct fc_lport *lport, struct fc_els_flogi *flogi, | |
315 | unsigned int op) | |
316 | { | |
317 | struct fc_els_csp *sp; | |
318 | struct fc_els_cssp *cp; | |
319 | ||
320 | memset(flogi, 0, sizeof(*flogi)); | |
321 | flogi->fl_cmd = (u8) op; | |
322 | put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn); | |
323 | put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn); | |
324 | sp = &flogi->fl_csp; | |
325 | sp->sp_hi_ver = 0x20; | |
326 | sp->sp_lo_ver = 0x20; | |
327 | sp->sp_bb_cred = htons(10); /* this gets set by gateway */ | |
328 | sp->sp_bb_data = htons((u16) lport->mfs); | |
329 | cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */ | |
330 | cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ); | |
331 | if (op != ELS_FLOGI) { | |
332 | sp->sp_features = htons(FC_SP_FT_CIRO); | |
333 | sp->sp_tot_seq = htons(255); /* seq. we accept */ | |
334 | sp->sp_rel_off = htons(0x1f); | |
335 | sp->sp_e_d_tov = htonl(lport->e_d_tov); | |
336 | ||
337 | cp->cp_rdfs = htons((u16) lport->mfs); | |
338 | cp->cp_con_seq = htons(255); | |
339 | cp->cp_open_seq = 1; | |
340 | } | |
341 | } | |
342 | ||
343 | /* | |
344 | * Add a supported FC-4 type. | |
345 | */ | |
346 | static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type) | |
347 | { | |
348 | __be32 *mp; | |
349 | ||
350 | mp = &lport->fcts.ff_type_map[type / FC_NS_BPW]; | |
351 | *mp = htonl(ntohl(*mp) | 1UL << (type % FC_NS_BPW)); | |
352 | } | |
353 | ||
354 | /** | |
34f42a07 | 355 | * fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report. |
42e9a92f RL |
356 | * @lport: Fibre Channel local port recieving the RLIR |
357 | * @sp: current sequence in the RLIR exchange | |
358 | * @fp: RLIR request frame | |
359 | * | |
360 | * Locking Note: The lport lock is exected to be held before calling | |
361 | * this function. | |
362 | */ | |
363 | static void fc_lport_recv_rlir_req(struct fc_seq *sp, struct fc_frame *fp, | |
364 | struct fc_lport *lport) | |
365 | { | |
366 | FC_DEBUG_LPORT("Received RLIR request while in state %s\n", | |
367 | fc_lport_state(lport)); | |
368 | ||
369 | lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); | |
370 | fc_frame_free(fp); | |
371 | } | |
372 | ||
373 | /** | |
34f42a07 | 374 | * fc_lport_recv_echo_req() - Handle received ECHO request |
42e9a92f RL |
375 | * @lport: Fibre Channel local port recieving the ECHO |
376 | * @sp: current sequence in the ECHO exchange | |
377 | * @fp: ECHO request frame | |
378 | * | |
379 | * Locking Note: The lport lock is exected to be held before calling | |
380 | * this function. | |
381 | */ | |
382 | static void fc_lport_recv_echo_req(struct fc_seq *sp, struct fc_frame *in_fp, | |
383 | struct fc_lport *lport) | |
384 | { | |
385 | struct fc_frame *fp; | |
386 | struct fc_exch *ep = fc_seq_exch(sp); | |
387 | unsigned int len; | |
388 | void *pp; | |
389 | void *dp; | |
390 | u32 f_ctl; | |
391 | ||
392 | FC_DEBUG_LPORT("Received RLIR request while in state %s\n", | |
393 | fc_lport_state(lport)); | |
394 | ||
395 | len = fr_len(in_fp) - sizeof(struct fc_frame_header); | |
396 | pp = fc_frame_payload_get(in_fp, len); | |
397 | ||
398 | if (len < sizeof(__be32)) | |
399 | len = sizeof(__be32); | |
400 | ||
401 | fp = fc_frame_alloc(lport, len); | |
402 | if (fp) { | |
403 | dp = fc_frame_payload_get(fp, len); | |
404 | memcpy(dp, pp, len); | |
405 | *((u32 *)dp) = htonl(ELS_LS_ACC << 24); | |
406 | sp = lport->tt.seq_start_next(sp); | |
407 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; | |
408 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
409 | FC_TYPE_ELS, f_ctl, 0); | |
410 | lport->tt.seq_send(lport, sp, fp); | |
411 | } | |
412 | fc_frame_free(in_fp); | |
413 | } | |
414 | ||
415 | /** | |
34f42a07 | 416 | * fc_lport_recv_echo_req() - Handle received Request Node ID data request |
42e9a92f RL |
417 | * @lport: Fibre Channel local port recieving the RNID |
418 | * @sp: current sequence in the RNID exchange | |
419 | * @fp: RNID request frame | |
420 | * | |
421 | * Locking Note: The lport lock is exected to be held before calling | |
422 | * this function. | |
423 | */ | |
424 | static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp, | |
425 | struct fc_lport *lport) | |
426 | { | |
427 | struct fc_frame *fp; | |
428 | struct fc_exch *ep = fc_seq_exch(sp); | |
429 | struct fc_els_rnid *req; | |
430 | struct { | |
431 | struct fc_els_rnid_resp rnid; | |
432 | struct fc_els_rnid_cid cid; | |
433 | struct fc_els_rnid_gen gen; | |
434 | } *rp; | |
435 | struct fc_seq_els_data rjt_data; | |
436 | u8 fmt; | |
437 | size_t len; | |
438 | u32 f_ctl; | |
439 | ||
440 | FC_DEBUG_LPORT("Received RNID request while in state %s\n", | |
441 | fc_lport_state(lport)); | |
442 | ||
443 | req = fc_frame_payload_get(in_fp, sizeof(*req)); | |
444 | if (!req) { | |
445 | rjt_data.fp = NULL; | |
446 | rjt_data.reason = ELS_RJT_LOGIC; | |
447 | rjt_data.explan = ELS_EXPL_NONE; | |
448 | lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); | |
449 | } else { | |
450 | fmt = req->rnid_fmt; | |
451 | len = sizeof(*rp); | |
452 | if (fmt != ELS_RNIDF_GEN || | |
453 | ntohl(lport->rnid_gen.rnid_atype) == 0) { | |
454 | fmt = ELS_RNIDF_NONE; /* nothing to provide */ | |
455 | len -= sizeof(rp->gen); | |
456 | } | |
457 | fp = fc_frame_alloc(lport, len); | |
458 | if (fp) { | |
459 | rp = fc_frame_payload_get(fp, len); | |
460 | memset(rp, 0, len); | |
461 | rp->rnid.rnid_cmd = ELS_LS_ACC; | |
462 | rp->rnid.rnid_fmt = fmt; | |
463 | rp->rnid.rnid_cid_len = sizeof(rp->cid); | |
464 | rp->cid.rnid_wwpn = htonll(lport->wwpn); | |
465 | rp->cid.rnid_wwnn = htonll(lport->wwnn); | |
466 | if (fmt == ELS_RNIDF_GEN) { | |
467 | rp->rnid.rnid_sid_len = sizeof(rp->gen); | |
468 | memcpy(&rp->gen, &lport->rnid_gen, | |
469 | sizeof(rp->gen)); | |
470 | } | |
471 | sp = lport->tt.seq_start_next(sp); | |
472 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; | |
473 | f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; | |
474 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
475 | FC_TYPE_ELS, f_ctl, 0); | |
476 | lport->tt.seq_send(lport, sp, fp); | |
477 | } | |
478 | } | |
479 | fc_frame_free(in_fp); | |
480 | } | |
481 | ||
482 | /** | |
34f42a07 | 483 | * fc_lport_recv_adisc_req() - Handle received Address Discovery Request |
42e9a92f RL |
484 | * @lport: Fibre Channel local port recieving the ADISC |
485 | * @sp: current sequence in the ADISC exchange | |
486 | * @fp: ADISC request frame | |
487 | * | |
488 | * Locking Note: The lport lock is expected to be held before calling | |
489 | * this function. | |
490 | */ | |
491 | static void fc_lport_recv_adisc_req(struct fc_seq *sp, struct fc_frame *in_fp, | |
492 | struct fc_lport *lport) | |
493 | { | |
494 | struct fc_frame *fp; | |
495 | struct fc_exch *ep = fc_seq_exch(sp); | |
496 | struct fc_els_adisc *req, *rp; | |
497 | struct fc_seq_els_data rjt_data; | |
498 | size_t len; | |
499 | u32 f_ctl; | |
500 | ||
501 | FC_DEBUG_LPORT("Received ADISC request while in state %s\n", | |
502 | fc_lport_state(lport)); | |
503 | ||
504 | req = fc_frame_payload_get(in_fp, sizeof(*req)); | |
505 | if (!req) { | |
506 | rjt_data.fp = NULL; | |
507 | rjt_data.reason = ELS_RJT_LOGIC; | |
508 | rjt_data.explan = ELS_EXPL_NONE; | |
509 | lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); | |
510 | } else { | |
511 | len = sizeof(*rp); | |
512 | fp = fc_frame_alloc(lport, len); | |
513 | if (fp) { | |
514 | rp = fc_frame_payload_get(fp, len); | |
515 | memset(rp, 0, len); | |
516 | rp->adisc_cmd = ELS_LS_ACC; | |
517 | rp->adisc_wwpn = htonll(lport->wwpn); | |
518 | rp->adisc_wwnn = htonll(lport->wwnn); | |
519 | hton24(rp->adisc_port_id, | |
520 | fc_host_port_id(lport->host)); | |
521 | sp = lport->tt.seq_start_next(sp); | |
522 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; | |
523 | f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; | |
524 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
525 | FC_TYPE_ELS, f_ctl, 0); | |
526 | lport->tt.seq_send(lport, sp, fp); | |
527 | } | |
528 | } | |
529 | fc_frame_free(in_fp); | |
530 | } | |
531 | ||
532 | /** | |
34f42a07 | 533 | * fc_lport_recv_logo_req() - Handle received fabric LOGO request |
42e9a92f RL |
534 | * @lport: Fibre Channel local port recieving the LOGO |
535 | * @sp: current sequence in the LOGO exchange | |
536 | * @fp: LOGO request frame | |
537 | * | |
538 | * Locking Note: The lport lock is exected to be held before calling | |
539 | * this function. | |
540 | */ | |
541 | static void fc_lport_recv_logo_req(struct fc_seq *sp, struct fc_frame *fp, | |
542 | struct fc_lport *lport) | |
543 | { | |
544 | lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); | |
545 | fc_lport_enter_reset(lport); | |
546 | fc_frame_free(fp); | |
547 | } | |
548 | ||
549 | /** | |
34f42a07 | 550 | * fc_fabric_login() - Start the lport state machine |
42e9a92f RL |
551 | * @lport: The lport that should log into the fabric |
552 | * | |
553 | * Locking Note: This function should not be called | |
554 | * with the lport lock held. | |
555 | */ | |
556 | int fc_fabric_login(struct fc_lport *lport) | |
557 | { | |
558 | int rc = -1; | |
559 | ||
560 | mutex_lock(&lport->lp_mutex); | |
561 | if (lport->state == LPORT_ST_NONE) { | |
562 | fc_lport_enter_reset(lport); | |
563 | rc = 0; | |
564 | } | |
565 | mutex_unlock(&lport->lp_mutex); | |
566 | ||
567 | return rc; | |
568 | } | |
569 | EXPORT_SYMBOL(fc_fabric_login); | |
570 | ||
571 | /** | |
34f42a07 | 572 | * fc_linkup() - Handler for transport linkup events |
42e9a92f RL |
573 | * @lport: The lport whose link is up |
574 | */ | |
575 | void fc_linkup(struct fc_lport *lport) | |
576 | { | |
577 | FC_DEBUG_LPORT("Link is up for port (%6x)\n", | |
578 | fc_host_port_id(lport->host)); | |
579 | ||
580 | mutex_lock(&lport->lp_mutex); | |
bc0e17f6 VD |
581 | if (!lport->link_up) { |
582 | lport->link_up = 1; | |
42e9a92f RL |
583 | |
584 | if (lport->state == LPORT_ST_RESET) | |
585 | fc_lport_enter_flogi(lport); | |
586 | } | |
587 | mutex_unlock(&lport->lp_mutex); | |
588 | } | |
589 | EXPORT_SYMBOL(fc_linkup); | |
590 | ||
591 | /** | |
34f42a07 | 592 | * fc_linkdown() - Handler for transport linkdown events |
42e9a92f RL |
593 | * @lport: The lport whose link is down |
594 | */ | |
595 | void fc_linkdown(struct fc_lport *lport) | |
596 | { | |
597 | mutex_lock(&lport->lp_mutex); | |
598 | FC_DEBUG_LPORT("Link is down for port (%6x)\n", | |
599 | fc_host_port_id(lport->host)); | |
600 | ||
bc0e17f6 VD |
601 | if (lport->link_up) { |
602 | lport->link_up = 0; | |
42e9a92f RL |
603 | fc_lport_enter_reset(lport); |
604 | lport->tt.fcp_cleanup(lport); | |
605 | } | |
606 | mutex_unlock(&lport->lp_mutex); | |
607 | } | |
608 | EXPORT_SYMBOL(fc_linkdown); | |
609 | ||
42e9a92f | 610 | /** |
34f42a07 | 611 | * fc_fabric_logoff() - Logout of the fabric |
42e9a92f RL |
612 | * @lport: fc_lport pointer to logoff the fabric |
613 | * | |
614 | * Return value: | |
615 | * 0 for success, -1 for failure | |
34f42a07 | 616 | */ |
42e9a92f RL |
617 | int fc_fabric_logoff(struct fc_lport *lport) |
618 | { | |
619 | lport->tt.disc_stop_final(lport); | |
620 | mutex_lock(&lport->lp_mutex); | |
621 | fc_lport_enter_logo(lport); | |
622 | mutex_unlock(&lport->lp_mutex); | |
f7db2c15 | 623 | cancel_delayed_work_sync(&lport->retry_work); |
42e9a92f RL |
624 | return 0; |
625 | } | |
626 | EXPORT_SYMBOL(fc_fabric_logoff); | |
627 | ||
628 | /** | |
34f42a07 | 629 | * fc_lport_destroy() - unregister a fc_lport |
42e9a92f RL |
630 | * @lport: fc_lport pointer to unregister |
631 | * | |
632 | * Return value: | |
633 | * None | |
634 | * Note: | |
635 | * exit routine for fc_lport instance | |
636 | * clean-up all the allocated memory | |
637 | * and free up other system resources. | |
638 | * | |
34f42a07 | 639 | */ |
42e9a92f RL |
640 | int fc_lport_destroy(struct fc_lport *lport) |
641 | { | |
642 | lport->tt.frame_send = fc_frame_drop; | |
643 | lport->tt.fcp_abort_io(lport); | |
1f6ff364 | 644 | lport->tt.exch_mgr_reset(lport, 0, 0); |
42e9a92f RL |
645 | return 0; |
646 | } | |
647 | EXPORT_SYMBOL(fc_lport_destroy); | |
648 | ||
649 | /** | |
34f42a07 | 650 | * fc_set_mfs() - sets up the mfs for the corresponding fc_lport |
42e9a92f RL |
651 | * @lport: fc_lport pointer to unregister |
652 | * @mfs: the new mfs for fc_lport | |
653 | * | |
654 | * Set mfs for the given fc_lport to the new mfs. | |
655 | * | |
656 | * Return: 0 for success | |
34f42a07 | 657 | */ |
42e9a92f RL |
658 | int fc_set_mfs(struct fc_lport *lport, u32 mfs) |
659 | { | |
660 | unsigned int old_mfs; | |
661 | int rc = -EINVAL; | |
662 | ||
663 | mutex_lock(&lport->lp_mutex); | |
664 | ||
665 | old_mfs = lport->mfs; | |
666 | ||
667 | if (mfs >= FC_MIN_MAX_FRAME) { | |
668 | mfs &= ~3; | |
669 | if (mfs > FC_MAX_FRAME) | |
670 | mfs = FC_MAX_FRAME; | |
671 | mfs -= sizeof(struct fc_frame_header); | |
672 | lport->mfs = mfs; | |
673 | rc = 0; | |
674 | } | |
675 | ||
676 | if (!rc && mfs < old_mfs) | |
677 | fc_lport_enter_reset(lport); | |
678 | ||
679 | mutex_unlock(&lport->lp_mutex); | |
680 | ||
681 | return rc; | |
682 | } | |
683 | EXPORT_SYMBOL(fc_set_mfs); | |
684 | ||
685 | /** | |
34f42a07 | 686 | * fc_lport_disc_callback() - Callback for discovery events |
42e9a92f RL |
687 | * @lport: FC local port |
688 | * @event: The discovery event | |
689 | */ | |
690 | void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event) | |
691 | { | |
692 | switch (event) { | |
693 | case DISC_EV_SUCCESS: | |
694 | FC_DEBUG_LPORT("Got a SUCCESS event for port (%6x)\n", | |
695 | fc_host_port_id(lport->host)); | |
696 | break; | |
697 | case DISC_EV_FAILED: | |
698 | FC_DEBUG_LPORT("Got a FAILED event for port (%6x)\n", | |
699 | fc_host_port_id(lport->host)); | |
700 | mutex_lock(&lport->lp_mutex); | |
701 | fc_lport_enter_reset(lport); | |
702 | mutex_unlock(&lport->lp_mutex); | |
703 | break; | |
704 | case DISC_EV_NONE: | |
705 | WARN_ON(1); | |
706 | break; | |
707 | } | |
708 | } | |
709 | ||
710 | /** | |
34f42a07 | 711 | * fc_rport_enter_ready() - Enter the ready state and start discovery |
42e9a92f RL |
712 | * @lport: Fibre Channel local port that is ready |
713 | * | |
714 | * Locking Note: The lport lock is expected to be held before calling | |
715 | * this routine. | |
716 | */ | |
717 | static void fc_lport_enter_ready(struct fc_lport *lport) | |
718 | { | |
719 | FC_DEBUG_LPORT("Port (%6x) entered Ready from state %s\n", | |
720 | fc_host_port_id(lport->host), fc_lport_state(lport)); | |
721 | ||
722 | fc_lport_state_enter(lport, LPORT_ST_READY); | |
723 | ||
724 | lport->tt.disc_start(fc_lport_disc_callback, lport); | |
725 | } | |
726 | ||
727 | /** | |
34f42a07 | 728 | * fc_lport_recv_flogi_req() - Receive a FLOGI request |
42e9a92f RL |
729 | * @sp_in: The sequence the FLOGI is on |
730 | * @rx_fp: The frame the FLOGI is in | |
731 | * @lport: The lport that recieved the request | |
732 | * | |
733 | * A received FLOGI request indicates a point-to-point connection. | |
734 | * Accept it with the common service parameters indicating our N port. | |
735 | * Set up to do a PLOGI if we have the higher-number WWPN. | |
736 | * | |
737 | * Locking Note: The lport lock is exected to be held before calling | |
738 | * this function. | |
739 | */ | |
740 | static void fc_lport_recv_flogi_req(struct fc_seq *sp_in, | |
741 | struct fc_frame *rx_fp, | |
742 | struct fc_lport *lport) | |
743 | { | |
744 | struct fc_frame *fp; | |
745 | struct fc_frame_header *fh; | |
746 | struct fc_seq *sp; | |
747 | struct fc_exch *ep; | |
748 | struct fc_els_flogi *flp; | |
749 | struct fc_els_flogi *new_flp; | |
750 | u64 remote_wwpn; | |
751 | u32 remote_fid; | |
752 | u32 local_fid; | |
753 | u32 f_ctl; | |
754 | ||
755 | FC_DEBUG_LPORT("Received FLOGI request while in state %s\n", | |
756 | fc_lport_state(lport)); | |
757 | ||
758 | fh = fc_frame_header_get(rx_fp); | |
759 | remote_fid = ntoh24(fh->fh_s_id); | |
760 | flp = fc_frame_payload_get(rx_fp, sizeof(*flp)); | |
761 | if (!flp) | |
762 | goto out; | |
763 | remote_wwpn = get_unaligned_be64(&flp->fl_wwpn); | |
764 | if (remote_wwpn == lport->wwpn) { | |
765 | FC_DBG("FLOGI from port with same WWPN %llx " | |
6e7490c7 FT |
766 | "possible configuration error\n", |
767 | (unsigned long long)remote_wwpn); | |
42e9a92f RL |
768 | goto out; |
769 | } | |
6e7490c7 | 770 | FC_DBG("FLOGI from port WWPN %llx\n", (unsigned long long)remote_wwpn); |
42e9a92f RL |
771 | |
772 | /* | |
773 | * XXX what is the right thing to do for FIDs? | |
774 | * The originator might expect our S_ID to be 0xfffffe. | |
775 | * But if so, both of us could end up with the same FID. | |
776 | */ | |
777 | local_fid = FC_LOCAL_PTP_FID_LO; | |
778 | if (remote_wwpn < lport->wwpn) { | |
779 | local_fid = FC_LOCAL_PTP_FID_HI; | |
780 | if (!remote_fid || remote_fid == local_fid) | |
781 | remote_fid = FC_LOCAL_PTP_FID_LO; | |
782 | } else if (!remote_fid) { | |
783 | remote_fid = FC_LOCAL_PTP_FID_HI; | |
784 | } | |
785 | ||
786 | fc_host_port_id(lport->host) = local_fid; | |
787 | ||
788 | fp = fc_frame_alloc(lport, sizeof(*flp)); | |
789 | if (fp) { | |
790 | sp = lport->tt.seq_start_next(fr_seq(rx_fp)); | |
791 | new_flp = fc_frame_payload_get(fp, sizeof(*flp)); | |
792 | fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI); | |
793 | new_flp->fl_cmd = (u8) ELS_LS_ACC; | |
794 | ||
795 | /* | |
796 | * Send the response. If this fails, the originator should | |
797 | * repeat the sequence. | |
798 | */ | |
799 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; | |
800 | ep = fc_seq_exch(sp); | |
801 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
802 | FC_TYPE_ELS, f_ctl, 0); | |
803 | lport->tt.seq_send(lport, sp, fp); | |
804 | ||
805 | } else { | |
806 | fc_lport_error(lport, fp); | |
807 | } | |
808 | fc_lport_ptp_setup(lport, remote_fid, remote_wwpn, | |
809 | get_unaligned_be64(&flp->fl_wwnn)); | |
810 | ||
811 | lport->tt.disc_start(fc_lport_disc_callback, lport); | |
812 | ||
813 | out: | |
814 | sp = fr_seq(rx_fp); | |
815 | fc_frame_free(rx_fp); | |
816 | } | |
817 | ||
818 | /** | |
34f42a07 | 819 | * fc_lport_recv_req() - The generic lport request handler |
42e9a92f RL |
820 | * @lport: The lport that received the request |
821 | * @sp: The sequence the request is on | |
822 | * @fp: The frame the request is in | |
823 | * | |
824 | * This function will see if the lport handles the request or | |
825 | * if an rport should handle the request. | |
826 | * | |
827 | * Locking Note: This function should not be called with the lport | |
828 | * lock held becuase it will grab the lock. | |
829 | */ | |
830 | static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp, | |
831 | struct fc_frame *fp) | |
832 | { | |
833 | struct fc_frame_header *fh = fc_frame_header_get(fp); | |
834 | void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *); | |
835 | struct fc_rport *rport; | |
836 | u32 s_id; | |
837 | u32 d_id; | |
838 | struct fc_seq_els_data rjt_data; | |
839 | ||
840 | mutex_lock(&lport->lp_mutex); | |
841 | ||
842 | /* | |
843 | * Handle special ELS cases like FLOGI, LOGO, and | |
844 | * RSCN here. These don't require a session. | |
845 | * Even if we had a session, it might not be ready. | |
846 | */ | |
847 | if (fh->fh_type == FC_TYPE_ELS && fh->fh_r_ctl == FC_RCTL_ELS_REQ) { | |
848 | /* | |
849 | * Check opcode. | |
850 | */ | |
851 | recv = NULL; | |
852 | switch (fc_frame_payload_op(fp)) { | |
853 | case ELS_FLOGI: | |
854 | recv = fc_lport_recv_flogi_req; | |
855 | break; | |
856 | case ELS_LOGO: | |
857 | fh = fc_frame_header_get(fp); | |
858 | if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) | |
859 | recv = fc_lport_recv_logo_req; | |
860 | break; | |
861 | case ELS_RSCN: | |
862 | recv = lport->tt.disc_recv_req; | |
863 | break; | |
864 | case ELS_ECHO: | |
865 | recv = fc_lport_recv_echo_req; | |
866 | break; | |
867 | case ELS_RLIR: | |
868 | recv = fc_lport_recv_rlir_req; | |
869 | break; | |
870 | case ELS_RNID: | |
871 | recv = fc_lport_recv_rnid_req; | |
872 | break; | |
873 | case ELS_ADISC: | |
874 | recv = fc_lport_recv_adisc_req; | |
875 | break; | |
876 | } | |
877 | ||
878 | if (recv) | |
879 | recv(sp, fp, lport); | |
880 | else { | |
881 | /* | |
882 | * Find session. | |
883 | * If this is a new incoming PLOGI, we won't find it. | |
884 | */ | |
885 | s_id = ntoh24(fh->fh_s_id); | |
886 | d_id = ntoh24(fh->fh_d_id); | |
887 | ||
888 | rport = lport->tt.rport_lookup(lport, s_id); | |
889 | if (rport) | |
890 | lport->tt.rport_recv_req(sp, fp, rport); | |
891 | else { | |
892 | rjt_data.fp = NULL; | |
893 | rjt_data.reason = ELS_RJT_UNAB; | |
894 | rjt_data.explan = ELS_EXPL_NONE; | |
895 | lport->tt.seq_els_rsp_send(sp, | |
896 | ELS_LS_RJT, | |
897 | &rjt_data); | |
898 | fc_frame_free(fp); | |
899 | } | |
900 | } | |
901 | } else { | |
902 | FC_DBG("dropping invalid frame (eof %x)\n", fr_eof(fp)); | |
903 | fc_frame_free(fp); | |
904 | } | |
905 | mutex_unlock(&lport->lp_mutex); | |
906 | ||
907 | /* | |
908 | * The common exch_done for all request may not be good | |
909 | * if any request requires longer hold on exhange. XXX | |
910 | */ | |
911 | lport->tt.exch_done(sp); | |
912 | } | |
913 | ||
914 | /** | |
34f42a07 | 915 | * fc_lport_reset() - Reset an lport |
42e9a92f RL |
916 | * @lport: The lport which should be reset |
917 | * | |
918 | * Locking Note: This functions should not be called with the | |
919 | * lport lock held. | |
920 | */ | |
921 | int fc_lport_reset(struct fc_lport *lport) | |
922 | { | |
f7db2c15 | 923 | cancel_delayed_work_sync(&lport->retry_work); |
42e9a92f RL |
924 | mutex_lock(&lport->lp_mutex); |
925 | fc_lport_enter_reset(lport); | |
926 | mutex_unlock(&lport->lp_mutex); | |
927 | return 0; | |
928 | } | |
929 | EXPORT_SYMBOL(fc_lport_reset); | |
930 | ||
931 | /** | |
34f42a07 | 932 | * fc_rport_enter_reset() - Reset the local port |
42e9a92f RL |
933 | * @lport: Fibre Channel local port to be reset |
934 | * | |
935 | * Locking Note: The lport lock is expected to be held before calling | |
936 | * this routine. | |
937 | */ | |
938 | static void fc_lport_enter_reset(struct fc_lport *lport) | |
939 | { | |
940 | FC_DEBUG_LPORT("Port (%6x) entered RESET state from %s state\n", | |
941 | fc_host_port_id(lport->host), fc_lport_state(lport)); | |
942 | ||
943 | fc_lport_state_enter(lport, LPORT_ST_RESET); | |
944 | ||
945 | if (lport->dns_rp) | |
946 | lport->tt.rport_logoff(lport->dns_rp); | |
947 | ||
948 | if (lport->ptp_rp) { | |
949 | lport->tt.rport_logoff(lport->ptp_rp); | |
950 | lport->ptp_rp = NULL; | |
951 | } | |
952 | ||
953 | lport->tt.disc_stop(lport); | |
954 | ||
1f6ff364 | 955 | lport->tt.exch_mgr_reset(lport, 0, 0); |
42e9a92f RL |
956 | fc_host_fabric_name(lport->host) = 0; |
957 | fc_host_port_id(lport->host) = 0; | |
958 | ||
bc0e17f6 | 959 | if (lport->link_up) |
42e9a92f RL |
960 | fc_lport_enter_flogi(lport); |
961 | } | |
962 | ||
963 | /** | |
34f42a07 | 964 | * fc_lport_error() - Handler for any errors |
42e9a92f RL |
965 | * @lport: The fc_lport object |
966 | * @fp: The frame pointer | |
967 | * | |
968 | * If the error was caused by a resource allocation failure | |
969 | * then wait for half a second and retry, otherwise retry | |
970 | * after the e_d_tov time. | |
971 | */ | |
972 | static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp) | |
973 | { | |
974 | unsigned long delay = 0; | |
975 | FC_DEBUG_LPORT("Error %ld in state %s, retries %d\n", | |
976 | PTR_ERR(fp), fc_lport_state(lport), | |
977 | lport->retry_count); | |
978 | ||
979 | if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) { | |
980 | /* | |
981 | * Memory allocation failure, or the exchange timed out. | |
982 | * Retry after delay | |
983 | */ | |
984 | if (lport->retry_count < lport->max_retry_count) { | |
985 | lport->retry_count++; | |
986 | if (!fp) | |
987 | delay = msecs_to_jiffies(500); | |
988 | else | |
989 | delay = msecs_to_jiffies(lport->e_d_tov); | |
990 | ||
991 | schedule_delayed_work(&lport->retry_work, delay); | |
992 | } else { | |
993 | switch (lport->state) { | |
994 | case LPORT_ST_NONE: | |
995 | case LPORT_ST_READY: | |
996 | case LPORT_ST_RESET: | |
997 | case LPORT_ST_RPN_ID: | |
998 | case LPORT_ST_RFT_ID: | |
999 | case LPORT_ST_SCR: | |
1000 | case LPORT_ST_DNS: | |
1001 | case LPORT_ST_FLOGI: | |
1002 | case LPORT_ST_LOGO: | |
1003 | fc_lport_enter_reset(lport); | |
1004 | break; | |
1005 | } | |
1006 | } | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | /** | |
34f42a07 RL |
1011 | * fc_lport_rft_id_resp() - Handle response to Register Fibre |
1012 | * Channel Types by ID (RPN_ID) request | |
42e9a92f RL |
1013 | * @sp: current sequence in RPN_ID exchange |
1014 | * @fp: response frame | |
1015 | * @lp_arg: Fibre Channel host port instance | |
1016 | * | |
1017 | * Locking Note: This function will be called without the lport lock | |
1018 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1019 | * and then unlock the lport. | |
1020 | */ | |
1021 | static void fc_lport_rft_id_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1022 | void *lp_arg) | |
1023 | { | |
1024 | struct fc_lport *lport = lp_arg; | |
1025 | struct fc_frame_header *fh; | |
1026 | struct fc_ct_hdr *ct; | |
1027 | ||
1028 | if (fp == ERR_PTR(-FC_EX_CLOSED)) | |
1029 | return; | |
1030 | ||
1031 | mutex_lock(&lport->lp_mutex); | |
1032 | ||
1033 | FC_DEBUG_LPORT("Received a RFT_ID response\n"); | |
1034 | ||
efaf5c08 RL |
1035 | if (IS_ERR(fp)) { |
1036 | fc_lport_error(lport, fp); | |
1037 | goto err; | |
1038 | } | |
1039 | ||
42e9a92f RL |
1040 | if (lport->state != LPORT_ST_RFT_ID) { |
1041 | FC_DBG("Received a RFT_ID response, but in state %s\n", | |
1042 | fc_lport_state(lport)); | |
1043 | goto out; | |
1044 | } | |
1045 | ||
42e9a92f RL |
1046 | fh = fc_frame_header_get(fp); |
1047 | ct = fc_frame_payload_get(fp, sizeof(*ct)); | |
1048 | ||
1049 | if (fh && ct && fh->fh_type == FC_TYPE_CT && | |
1050 | ct->ct_fs_type == FC_FST_DIR && | |
1051 | ct->ct_fs_subtype == FC_NS_SUBTYPE && | |
1052 | ntohs(ct->ct_cmd) == FC_FS_ACC) | |
1053 | fc_lport_enter_scr(lport); | |
1054 | else | |
1055 | fc_lport_error(lport, fp); | |
1056 | out: | |
1057 | fc_frame_free(fp); | |
1058 | err: | |
1059 | mutex_unlock(&lport->lp_mutex); | |
1060 | } | |
1061 | ||
1062 | /** | |
34f42a07 RL |
1063 | * fc_lport_rpn_id_resp() - Handle response to Register Port |
1064 | * Name by ID (RPN_ID) request | |
42e9a92f RL |
1065 | * @sp: current sequence in RPN_ID exchange |
1066 | * @fp: response frame | |
1067 | * @lp_arg: Fibre Channel host port instance | |
1068 | * | |
1069 | * Locking Note: This function will be called without the lport lock | |
1070 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1071 | * and then unlock the lport. | |
1072 | */ | |
1073 | static void fc_lport_rpn_id_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1074 | void *lp_arg) | |
1075 | { | |
1076 | struct fc_lport *lport = lp_arg; | |
1077 | struct fc_frame_header *fh; | |
1078 | struct fc_ct_hdr *ct; | |
1079 | ||
1080 | if (fp == ERR_PTR(-FC_EX_CLOSED)) | |
1081 | return; | |
1082 | ||
1083 | mutex_lock(&lport->lp_mutex); | |
1084 | ||
1085 | FC_DEBUG_LPORT("Received a RPN_ID response\n"); | |
1086 | ||
efaf5c08 RL |
1087 | if (IS_ERR(fp)) { |
1088 | fc_lport_error(lport, fp); | |
1089 | goto err; | |
1090 | } | |
1091 | ||
42e9a92f RL |
1092 | if (lport->state != LPORT_ST_RPN_ID) { |
1093 | FC_DBG("Received a RPN_ID response, but in state %s\n", | |
1094 | fc_lport_state(lport)); | |
1095 | goto out; | |
1096 | } | |
1097 | ||
42e9a92f RL |
1098 | fh = fc_frame_header_get(fp); |
1099 | ct = fc_frame_payload_get(fp, sizeof(*ct)); | |
1100 | if (fh && ct && fh->fh_type == FC_TYPE_CT && | |
1101 | ct->ct_fs_type == FC_FST_DIR && | |
1102 | ct->ct_fs_subtype == FC_NS_SUBTYPE && | |
1103 | ntohs(ct->ct_cmd) == FC_FS_ACC) | |
1104 | fc_lport_enter_rft_id(lport); | |
1105 | else | |
1106 | fc_lport_error(lport, fp); | |
1107 | ||
1108 | out: | |
1109 | fc_frame_free(fp); | |
1110 | err: | |
1111 | mutex_unlock(&lport->lp_mutex); | |
1112 | } | |
1113 | ||
1114 | /** | |
34f42a07 | 1115 | * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request |
42e9a92f RL |
1116 | * @sp: current sequence in SCR exchange |
1117 | * @fp: response frame | |
1118 | * @lp_arg: Fibre Channel lport port instance that sent the registration request | |
1119 | * | |
1120 | * Locking Note: This function will be called without the lport lock | |
1121 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1122 | * and then unlock the lport. | |
1123 | */ | |
1124 | static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1125 | void *lp_arg) | |
1126 | { | |
1127 | struct fc_lport *lport = lp_arg; | |
1128 | u8 op; | |
1129 | ||
1130 | if (fp == ERR_PTR(-FC_EX_CLOSED)) | |
1131 | return; | |
1132 | ||
1133 | mutex_lock(&lport->lp_mutex); | |
1134 | ||
1135 | FC_DEBUG_LPORT("Received a SCR response\n"); | |
1136 | ||
efaf5c08 RL |
1137 | if (IS_ERR(fp)) { |
1138 | fc_lport_error(lport, fp); | |
1139 | goto err; | |
1140 | } | |
1141 | ||
42e9a92f RL |
1142 | if (lport->state != LPORT_ST_SCR) { |
1143 | FC_DBG("Received a SCR response, but in state %s\n", | |
1144 | fc_lport_state(lport)); | |
1145 | goto out; | |
1146 | } | |
1147 | ||
42e9a92f RL |
1148 | op = fc_frame_payload_op(fp); |
1149 | if (op == ELS_LS_ACC) | |
1150 | fc_lport_enter_ready(lport); | |
1151 | else | |
1152 | fc_lport_error(lport, fp); | |
1153 | ||
1154 | out: | |
1155 | fc_frame_free(fp); | |
1156 | err: | |
1157 | mutex_unlock(&lport->lp_mutex); | |
1158 | } | |
1159 | ||
1160 | /** | |
34f42a07 | 1161 | * fc_lport_enter_scr() - Send a State Change Register (SCR) request |
42e9a92f RL |
1162 | * @lport: Fibre Channel local port to register for state changes |
1163 | * | |
1164 | * Locking Note: The lport lock is expected to be held before calling | |
1165 | * this routine. | |
1166 | */ | |
1167 | static void fc_lport_enter_scr(struct fc_lport *lport) | |
1168 | { | |
1169 | struct fc_frame *fp; | |
1170 | ||
1171 | FC_DEBUG_LPORT("Port (%6x) entered SCR state from %s state\n", | |
1172 | fc_host_port_id(lport->host), fc_lport_state(lport)); | |
1173 | ||
1174 | fc_lport_state_enter(lport, LPORT_ST_SCR); | |
1175 | ||
1176 | fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr)); | |
1177 | if (!fp) { | |
1178 | fc_lport_error(lport, fp); | |
1179 | return; | |
1180 | } | |
1181 | ||
1182 | if (!lport->tt.elsct_send(lport, NULL, fp, ELS_SCR, | |
1183 | fc_lport_scr_resp, lport, lport->e_d_tov)) | |
1184 | fc_lport_error(lport, fp); | |
1185 | } | |
1186 | ||
1187 | /** | |
34f42a07 | 1188 | * fc_lport_enter_rft_id() - Register FC4-types with the name server |
42e9a92f RL |
1189 | * @lport: Fibre Channel local port to register |
1190 | * | |
1191 | * Locking Note: The lport lock is expected to be held before calling | |
1192 | * this routine. | |
1193 | */ | |
1194 | static void fc_lport_enter_rft_id(struct fc_lport *lport) | |
1195 | { | |
1196 | struct fc_frame *fp; | |
1197 | struct fc_ns_fts *lps; | |
1198 | int i; | |
1199 | ||
1200 | FC_DEBUG_LPORT("Port (%6x) entered RFT_ID state from %s state\n", | |
1201 | fc_host_port_id(lport->host), fc_lport_state(lport)); | |
1202 | ||
1203 | fc_lport_state_enter(lport, LPORT_ST_RFT_ID); | |
1204 | ||
1205 | lps = &lport->fcts; | |
1206 | i = sizeof(lps->ff_type_map) / sizeof(lps->ff_type_map[0]); | |
1207 | while (--i >= 0) | |
1208 | if (ntohl(lps->ff_type_map[i]) != 0) | |
1209 | break; | |
1210 | if (i < 0) { | |
1211 | /* nothing to register, move on to SCR */ | |
1212 | fc_lport_enter_scr(lport); | |
1213 | return; | |
1214 | } | |
1215 | ||
1216 | fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + | |
1217 | sizeof(struct fc_ns_rft)); | |
1218 | if (!fp) { | |
1219 | fc_lport_error(lport, fp); | |
1220 | return; | |
1221 | } | |
1222 | ||
1223 | if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RFT_ID, | |
1224 | fc_lport_rft_id_resp, | |
1225 | lport, lport->e_d_tov)) | |
1226 | fc_lport_error(lport, fp); | |
1227 | } | |
1228 | ||
1229 | /** | |
34f42a07 | 1230 | * fc_rport_enter_rft_id() - Register port name with the name server |
42e9a92f RL |
1231 | * @lport: Fibre Channel local port to register |
1232 | * | |
1233 | * Locking Note: The lport lock is expected to be held before calling | |
1234 | * this routine. | |
1235 | */ | |
1236 | static void fc_lport_enter_rpn_id(struct fc_lport *lport) | |
1237 | { | |
1238 | struct fc_frame *fp; | |
1239 | ||
1240 | FC_DEBUG_LPORT("Port (%6x) entered RPN_ID state from %s state\n", | |
1241 | fc_host_port_id(lport->host), fc_lport_state(lport)); | |
1242 | ||
1243 | fc_lport_state_enter(lport, LPORT_ST_RPN_ID); | |
1244 | ||
1245 | fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + | |
1246 | sizeof(struct fc_ns_rn_id)); | |
1247 | if (!fp) { | |
1248 | fc_lport_error(lport, fp); | |
1249 | return; | |
1250 | } | |
1251 | ||
1252 | if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RPN_ID, | |
1253 | fc_lport_rpn_id_resp, | |
1254 | lport, lport->e_d_tov)) | |
1255 | fc_lport_error(lport, fp); | |
1256 | } | |
1257 | ||
1258 | static struct fc_rport_operations fc_lport_rport_ops = { | |
1259 | .event_callback = fc_lport_rport_callback, | |
1260 | }; | |
1261 | ||
1262 | /** | |
34f42a07 | 1263 | * fc_rport_enter_dns() - Create a rport to the name server |
42e9a92f RL |
1264 | * @lport: Fibre Channel local port requesting a rport for the name server |
1265 | * | |
1266 | * Locking Note: The lport lock is expected to be held before calling | |
1267 | * this routine. | |
1268 | */ | |
1269 | static void fc_lport_enter_dns(struct fc_lport *lport) | |
1270 | { | |
1271 | struct fc_rport *rport; | |
1272 | struct fc_rport_libfc_priv *rdata; | |
1273 | struct fc_disc_port dp; | |
1274 | ||
1275 | dp.ids.port_id = FC_FID_DIR_SERV; | |
1276 | dp.ids.port_name = -1; | |
1277 | dp.ids.node_name = -1; | |
1278 | dp.ids.roles = FC_RPORT_ROLE_UNKNOWN; | |
1279 | dp.lp = lport; | |
1280 | ||
1281 | FC_DEBUG_LPORT("Port (%6x) entered DNS state from %s state\n", | |
1282 | fc_host_port_id(lport->host), fc_lport_state(lport)); | |
1283 | ||
1284 | fc_lport_state_enter(lport, LPORT_ST_DNS); | |
1285 | ||
5101ff99 | 1286 | rport = lport->tt.rport_create(&dp); |
42e9a92f RL |
1287 | if (!rport) |
1288 | goto err; | |
1289 | ||
1290 | rdata = rport->dd_data; | |
1291 | rdata->ops = &fc_lport_rport_ops; | |
1292 | lport->tt.rport_login(rport); | |
1293 | return; | |
1294 | ||
1295 | err: | |
1296 | fc_lport_error(lport, NULL); | |
1297 | } | |
1298 | ||
1299 | /** | |
34f42a07 | 1300 | * fc_lport_timeout() - Handler for the retry_work timer. |
42e9a92f RL |
1301 | * @work: The work struct of the fc_lport |
1302 | */ | |
1303 | static void fc_lport_timeout(struct work_struct *work) | |
1304 | { | |
1305 | struct fc_lport *lport = | |
1306 | container_of(work, struct fc_lport, | |
1307 | retry_work.work); | |
1308 | ||
1309 | mutex_lock(&lport->lp_mutex); | |
1310 | ||
1311 | switch (lport->state) { | |
1312 | case LPORT_ST_NONE: | |
1313 | case LPORT_ST_READY: | |
1314 | case LPORT_ST_RESET: | |
1315 | WARN_ON(1); | |
1316 | break; | |
1317 | case LPORT_ST_FLOGI: | |
1318 | fc_lport_enter_flogi(lport); | |
1319 | break; | |
1320 | case LPORT_ST_DNS: | |
1321 | fc_lport_enter_dns(lport); | |
1322 | break; | |
1323 | case LPORT_ST_RPN_ID: | |
1324 | fc_lport_enter_rpn_id(lport); | |
1325 | break; | |
1326 | case LPORT_ST_RFT_ID: | |
1327 | fc_lport_enter_rft_id(lport); | |
1328 | break; | |
1329 | case LPORT_ST_SCR: | |
1330 | fc_lport_enter_scr(lport); | |
1331 | break; | |
1332 | case LPORT_ST_LOGO: | |
1333 | fc_lport_enter_logo(lport); | |
1334 | break; | |
1335 | } | |
1336 | ||
1337 | mutex_unlock(&lport->lp_mutex); | |
1338 | } | |
1339 | ||
1340 | /** | |
34f42a07 | 1341 | * fc_lport_logo_resp() - Handle response to LOGO request |
42e9a92f RL |
1342 | * @sp: current sequence in LOGO exchange |
1343 | * @fp: response frame | |
1344 | * @lp_arg: Fibre Channel lport port instance that sent the LOGO request | |
1345 | * | |
1346 | * Locking Note: This function will be called without the lport lock | |
1347 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1348 | * and then unlock the lport. | |
1349 | */ | |
1350 | static void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1351 | void *lp_arg) | |
1352 | { | |
1353 | struct fc_lport *lport = lp_arg; | |
1354 | u8 op; | |
1355 | ||
1356 | if (fp == ERR_PTR(-FC_EX_CLOSED)) | |
1357 | return; | |
1358 | ||
1359 | mutex_lock(&lport->lp_mutex); | |
1360 | ||
1361 | FC_DEBUG_LPORT("Received a LOGO response\n"); | |
1362 | ||
efaf5c08 RL |
1363 | if (IS_ERR(fp)) { |
1364 | fc_lport_error(lport, fp); | |
1365 | goto err; | |
1366 | } | |
1367 | ||
42e9a92f RL |
1368 | if (lport->state != LPORT_ST_LOGO) { |
1369 | FC_DBG("Received a LOGO response, but in state %s\n", | |
1370 | fc_lport_state(lport)); | |
1371 | goto out; | |
1372 | } | |
1373 | ||
42e9a92f RL |
1374 | op = fc_frame_payload_op(fp); |
1375 | if (op == ELS_LS_ACC) | |
1376 | fc_lport_enter_reset(lport); | |
1377 | else | |
1378 | fc_lport_error(lport, fp); | |
1379 | ||
1380 | out: | |
1381 | fc_frame_free(fp); | |
1382 | err: | |
1383 | mutex_unlock(&lport->lp_mutex); | |
1384 | } | |
1385 | ||
1386 | /** | |
34f42a07 | 1387 | * fc_rport_enter_logo() - Logout of the fabric |
42e9a92f RL |
1388 | * @lport: Fibre Channel local port to be logged out |
1389 | * | |
1390 | * Locking Note: The lport lock is expected to be held before calling | |
1391 | * this routine. | |
1392 | */ | |
1393 | static void fc_lport_enter_logo(struct fc_lport *lport) | |
1394 | { | |
1395 | struct fc_frame *fp; | |
1396 | struct fc_els_logo *logo; | |
1397 | ||
1398 | FC_DEBUG_LPORT("Port (%6x) entered LOGO state from %s state\n", | |
1399 | fc_host_port_id(lport->host), fc_lport_state(lport)); | |
1400 | ||
1401 | fc_lport_state_enter(lport, LPORT_ST_LOGO); | |
1402 | ||
1403 | /* DNS session should be closed so we can release it here */ | |
1404 | if (lport->dns_rp) | |
1405 | lport->tt.rport_logoff(lport->dns_rp); | |
1406 | ||
1407 | fp = fc_frame_alloc(lport, sizeof(*logo)); | |
1408 | if (!fp) { | |
1409 | fc_lport_error(lport, fp); | |
1410 | return; | |
1411 | } | |
1412 | ||
1413 | if (!lport->tt.elsct_send(lport, NULL, fp, ELS_LOGO, fc_lport_logo_resp, | |
1414 | lport, lport->e_d_tov)) | |
1415 | fc_lport_error(lport, fp); | |
1416 | } | |
1417 | ||
1418 | /** | |
34f42a07 | 1419 | * fc_lport_flogi_resp() - Handle response to FLOGI request |
42e9a92f RL |
1420 | * @sp: current sequence in FLOGI exchange |
1421 | * @fp: response frame | |
1422 | * @lp_arg: Fibre Channel lport port instance that sent the FLOGI request | |
1423 | * | |
1424 | * Locking Note: This function will be called without the lport lock | |
1425 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1426 | * and then unlock the lport. | |
1427 | */ | |
1428 | static void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1429 | void *lp_arg) | |
1430 | { | |
1431 | struct fc_lport *lport = lp_arg; | |
1432 | struct fc_frame_header *fh; | |
1433 | struct fc_els_flogi *flp; | |
1434 | u32 did; | |
1435 | u16 csp_flags; | |
1436 | unsigned int r_a_tov; | |
1437 | unsigned int e_d_tov; | |
1438 | u16 mfs; | |
1439 | ||
1440 | if (fp == ERR_PTR(-FC_EX_CLOSED)) | |
1441 | return; | |
1442 | ||
1443 | mutex_lock(&lport->lp_mutex); | |
1444 | ||
1445 | FC_DEBUG_LPORT("Received a FLOGI response\n"); | |
1446 | ||
efaf5c08 RL |
1447 | if (IS_ERR(fp)) { |
1448 | fc_lport_error(lport, fp); | |
1449 | goto err; | |
1450 | } | |
1451 | ||
42e9a92f RL |
1452 | if (lport->state != LPORT_ST_FLOGI) { |
1453 | FC_DBG("Received a FLOGI response, but in state %s\n", | |
1454 | fc_lport_state(lport)); | |
1455 | goto out; | |
1456 | } | |
1457 | ||
42e9a92f RL |
1458 | fh = fc_frame_header_get(fp); |
1459 | did = ntoh24(fh->fh_d_id); | |
1460 | if (fc_frame_payload_op(fp) == ELS_LS_ACC && did != 0) { | |
1461 | ||
1462 | FC_DEBUG_LPORT("Assigned fid %x\n", did); | |
1463 | fc_host_port_id(lport->host) = did; | |
1464 | ||
1465 | flp = fc_frame_payload_get(fp, sizeof(*flp)); | |
1466 | if (flp) { | |
1467 | mfs = ntohs(flp->fl_csp.sp_bb_data) & | |
1468 | FC_SP_BB_DATA_MASK; | |
1469 | if (mfs >= FC_SP_MIN_MAX_PAYLOAD && | |
1470 | mfs < lport->mfs) | |
1471 | lport->mfs = mfs; | |
1472 | csp_flags = ntohs(flp->fl_csp.sp_features); | |
1473 | r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov); | |
1474 | e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov); | |
1475 | if (csp_flags & FC_SP_FT_EDTR) | |
1476 | e_d_tov /= 1000000; | |
1477 | if ((csp_flags & FC_SP_FT_FPORT) == 0) { | |
1478 | if (e_d_tov > lport->e_d_tov) | |
1479 | lport->e_d_tov = e_d_tov; | |
1480 | lport->r_a_tov = 2 * e_d_tov; | |
1481 | FC_DBG("Point-to-Point mode\n"); | |
1482 | fc_lport_ptp_setup(lport, ntoh24(fh->fh_s_id), | |
1483 | get_unaligned_be64( | |
1484 | &flp->fl_wwpn), | |
1485 | get_unaligned_be64( | |
1486 | &flp->fl_wwnn)); | |
1487 | } else { | |
1488 | lport->e_d_tov = e_d_tov; | |
1489 | lport->r_a_tov = r_a_tov; | |
1490 | fc_host_fabric_name(lport->host) = | |
1491 | get_unaligned_be64(&flp->fl_wwnn); | |
1492 | fc_lport_enter_dns(lport); | |
1493 | } | |
1494 | } | |
1495 | ||
1496 | if (flp) { | |
1497 | csp_flags = ntohs(flp->fl_csp.sp_features); | |
1498 | if ((csp_flags & FC_SP_FT_FPORT) == 0) { | |
1499 | lport->tt.disc_start(fc_lport_disc_callback, | |
1500 | lport); | |
1501 | } | |
1502 | } | |
1503 | } else { | |
1504 | FC_DBG("bad FLOGI response\n"); | |
1505 | } | |
1506 | ||
1507 | out: | |
1508 | fc_frame_free(fp); | |
1509 | err: | |
1510 | mutex_unlock(&lport->lp_mutex); | |
1511 | } | |
1512 | ||
1513 | /** | |
34f42a07 | 1514 | * fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager |
42e9a92f RL |
1515 | * @lport: Fibre Channel local port to be logged in to the fabric |
1516 | * | |
1517 | * Locking Note: The lport lock is expected to be held before calling | |
1518 | * this routine. | |
1519 | */ | |
1520 | void fc_lport_enter_flogi(struct fc_lport *lport) | |
1521 | { | |
1522 | struct fc_frame *fp; | |
1523 | ||
1524 | FC_DEBUG_LPORT("Processing FLOGI state\n"); | |
1525 | ||
1526 | fc_lport_state_enter(lport, LPORT_ST_FLOGI); | |
1527 | ||
1528 | fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); | |
1529 | if (!fp) | |
1530 | return fc_lport_error(lport, fp); | |
1531 | ||
1532 | if (!lport->tt.elsct_send(lport, NULL, fp, ELS_FLOGI, | |
1533 | fc_lport_flogi_resp, lport, lport->e_d_tov)) | |
1534 | fc_lport_error(lport, fp); | |
1535 | } | |
1536 | ||
1537 | /* Configure a fc_lport */ | |
1538 | int fc_lport_config(struct fc_lport *lport) | |
1539 | { | |
1540 | INIT_DELAYED_WORK(&lport->retry_work, fc_lport_timeout); | |
1541 | mutex_init(&lport->lp_mutex); | |
1542 | ||
1543 | fc_lport_state_enter(lport, LPORT_ST_NONE); | |
1544 | ||
1545 | fc_lport_add_fc4_type(lport, FC_TYPE_FCP); | |
1546 | fc_lport_add_fc4_type(lport, FC_TYPE_CT); | |
1547 | ||
1548 | return 0; | |
1549 | } | |
1550 | EXPORT_SYMBOL(fc_lport_config); | |
1551 | ||
1552 | int fc_lport_init(struct fc_lport *lport) | |
1553 | { | |
1554 | if (!lport->tt.lport_recv) | |
1555 | lport->tt.lport_recv = fc_lport_recv_req; | |
1556 | ||
1557 | if (!lport->tt.lport_reset) | |
1558 | lport->tt.lport_reset = fc_lport_reset; | |
1559 | ||
1560 | fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; | |
1561 | fc_host_node_name(lport->host) = lport->wwnn; | |
1562 | fc_host_port_name(lport->host) = lport->wwpn; | |
1563 | fc_host_supported_classes(lport->host) = FC_COS_CLASS3; | |
1564 | memset(fc_host_supported_fc4s(lport->host), 0, | |
1565 | sizeof(fc_host_supported_fc4s(lport->host))); | |
1566 | fc_host_supported_fc4s(lport->host)[2] = 1; | |
1567 | fc_host_supported_fc4s(lport->host)[7] = 1; | |
1568 | ||
1569 | /* This value is also unchanging */ | |
1570 | memset(fc_host_active_fc4s(lport->host), 0, | |
1571 | sizeof(fc_host_active_fc4s(lport->host))); | |
1572 | fc_host_active_fc4s(lport->host)[2] = 1; | |
1573 | fc_host_active_fc4s(lport->host)[7] = 1; | |
1574 | fc_host_maxframe_size(lport->host) = lport->mfs; | |
1575 | fc_host_supported_speeds(lport->host) = 0; | |
1576 | if (lport->link_supported_speeds & FC_PORTSPEED_1GBIT) | |
1577 | fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_1GBIT; | |
1578 | if (lport->link_supported_speeds & FC_PORTSPEED_10GBIT) | |
1579 | fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_10GBIT; | |
1580 | ||
1581 | return 0; | |
1582 | } | |
1583 | EXPORT_SYMBOL(fc_lport_init); |