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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); | |
a0fd2e49 AJ |
621 | if (lport->dns_rp) |
622 | lport->tt.rport_logoff(lport->dns_rp); | |
623 | mutex_unlock(&lport->lp_mutex); | |
624 | lport->tt.rport_flush_queue(); | |
625 | mutex_lock(&lport->lp_mutex); | |
42e9a92f RL |
626 | fc_lport_enter_logo(lport); |
627 | mutex_unlock(&lport->lp_mutex); | |
f7db2c15 | 628 | cancel_delayed_work_sync(&lport->retry_work); |
42e9a92f RL |
629 | return 0; |
630 | } | |
631 | EXPORT_SYMBOL(fc_fabric_logoff); | |
632 | ||
633 | /** | |
34f42a07 | 634 | * fc_lport_destroy() - unregister a fc_lport |
42e9a92f RL |
635 | * @lport: fc_lport pointer to unregister |
636 | * | |
637 | * Return value: | |
638 | * None | |
639 | * Note: | |
640 | * exit routine for fc_lport instance | |
641 | * clean-up all the allocated memory | |
642 | * and free up other system resources. | |
643 | * | |
34f42a07 | 644 | */ |
42e9a92f RL |
645 | int fc_lport_destroy(struct fc_lport *lport) |
646 | { | |
bbf15669 AJ |
647 | mutex_lock(&lport->lp_mutex); |
648 | lport->state = LPORT_ST_NONE; | |
649 | lport->link_up = 0; | |
42e9a92f | 650 | lport->tt.frame_send = fc_frame_drop; |
bbf15669 AJ |
651 | mutex_unlock(&lport->lp_mutex); |
652 | ||
42e9a92f | 653 | lport->tt.fcp_abort_io(lport); |
1f6ff364 | 654 | lport->tt.exch_mgr_reset(lport, 0, 0); |
42e9a92f RL |
655 | return 0; |
656 | } | |
657 | EXPORT_SYMBOL(fc_lport_destroy); | |
658 | ||
659 | /** | |
34f42a07 | 660 | * fc_set_mfs() - sets up the mfs for the corresponding fc_lport |
42e9a92f RL |
661 | * @lport: fc_lport pointer to unregister |
662 | * @mfs: the new mfs for fc_lport | |
663 | * | |
664 | * Set mfs for the given fc_lport to the new mfs. | |
665 | * | |
666 | * Return: 0 for success | |
34f42a07 | 667 | */ |
42e9a92f RL |
668 | int fc_set_mfs(struct fc_lport *lport, u32 mfs) |
669 | { | |
670 | unsigned int old_mfs; | |
671 | int rc = -EINVAL; | |
672 | ||
673 | mutex_lock(&lport->lp_mutex); | |
674 | ||
675 | old_mfs = lport->mfs; | |
676 | ||
677 | if (mfs >= FC_MIN_MAX_FRAME) { | |
678 | mfs &= ~3; | |
679 | if (mfs > FC_MAX_FRAME) | |
680 | mfs = FC_MAX_FRAME; | |
681 | mfs -= sizeof(struct fc_frame_header); | |
682 | lport->mfs = mfs; | |
683 | rc = 0; | |
684 | } | |
685 | ||
686 | if (!rc && mfs < old_mfs) | |
687 | fc_lport_enter_reset(lport); | |
688 | ||
689 | mutex_unlock(&lport->lp_mutex); | |
690 | ||
691 | return rc; | |
692 | } | |
693 | EXPORT_SYMBOL(fc_set_mfs); | |
694 | ||
695 | /** | |
34f42a07 | 696 | * fc_lport_disc_callback() - Callback for discovery events |
42e9a92f RL |
697 | * @lport: FC local port |
698 | * @event: The discovery event | |
699 | */ | |
700 | void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event) | |
701 | { | |
702 | switch (event) { | |
703 | case DISC_EV_SUCCESS: | |
704 | FC_DEBUG_LPORT("Got a SUCCESS event for port (%6x)\n", | |
705 | fc_host_port_id(lport->host)); | |
706 | break; | |
707 | case DISC_EV_FAILED: | |
708 | FC_DEBUG_LPORT("Got a FAILED event for port (%6x)\n", | |
709 | fc_host_port_id(lport->host)); | |
710 | mutex_lock(&lport->lp_mutex); | |
711 | fc_lport_enter_reset(lport); | |
712 | mutex_unlock(&lport->lp_mutex); | |
713 | break; | |
714 | case DISC_EV_NONE: | |
715 | WARN_ON(1); | |
716 | break; | |
717 | } | |
718 | } | |
719 | ||
720 | /** | |
34f42a07 | 721 | * fc_rport_enter_ready() - Enter the ready state and start discovery |
42e9a92f RL |
722 | * @lport: Fibre Channel local port that is ready |
723 | * | |
724 | * Locking Note: The lport lock is expected to be held before calling | |
725 | * this routine. | |
726 | */ | |
727 | static void fc_lport_enter_ready(struct fc_lport *lport) | |
728 | { | |
729 | FC_DEBUG_LPORT("Port (%6x) entered Ready from state %s\n", | |
730 | fc_host_port_id(lport->host), fc_lport_state(lport)); | |
731 | ||
732 | fc_lport_state_enter(lport, LPORT_ST_READY); | |
733 | ||
734 | lport->tt.disc_start(fc_lport_disc_callback, lport); | |
735 | } | |
736 | ||
737 | /** | |
34f42a07 | 738 | * fc_lport_recv_flogi_req() - Receive a FLOGI request |
42e9a92f RL |
739 | * @sp_in: The sequence the FLOGI is on |
740 | * @rx_fp: The frame the FLOGI is in | |
741 | * @lport: The lport that recieved the request | |
742 | * | |
743 | * A received FLOGI request indicates a point-to-point connection. | |
744 | * Accept it with the common service parameters indicating our N port. | |
745 | * Set up to do a PLOGI if we have the higher-number WWPN. | |
746 | * | |
747 | * Locking Note: The lport lock is exected to be held before calling | |
748 | * this function. | |
749 | */ | |
750 | static void fc_lport_recv_flogi_req(struct fc_seq *sp_in, | |
751 | struct fc_frame *rx_fp, | |
752 | struct fc_lport *lport) | |
753 | { | |
754 | struct fc_frame *fp; | |
755 | struct fc_frame_header *fh; | |
756 | struct fc_seq *sp; | |
757 | struct fc_exch *ep; | |
758 | struct fc_els_flogi *flp; | |
759 | struct fc_els_flogi *new_flp; | |
760 | u64 remote_wwpn; | |
761 | u32 remote_fid; | |
762 | u32 local_fid; | |
763 | u32 f_ctl; | |
764 | ||
765 | FC_DEBUG_LPORT("Received FLOGI request while in state %s\n", | |
766 | fc_lport_state(lport)); | |
767 | ||
768 | fh = fc_frame_header_get(rx_fp); | |
769 | remote_fid = ntoh24(fh->fh_s_id); | |
770 | flp = fc_frame_payload_get(rx_fp, sizeof(*flp)); | |
771 | if (!flp) | |
772 | goto out; | |
773 | remote_wwpn = get_unaligned_be64(&flp->fl_wwpn); | |
774 | if (remote_wwpn == lport->wwpn) { | |
775 | FC_DBG("FLOGI from port with same WWPN %llx " | |
6e7490c7 FT |
776 | "possible configuration error\n", |
777 | (unsigned long long)remote_wwpn); | |
42e9a92f RL |
778 | goto out; |
779 | } | |
6e7490c7 | 780 | FC_DBG("FLOGI from port WWPN %llx\n", (unsigned long long)remote_wwpn); |
42e9a92f RL |
781 | |
782 | /* | |
783 | * XXX what is the right thing to do for FIDs? | |
784 | * The originator might expect our S_ID to be 0xfffffe. | |
785 | * But if so, both of us could end up with the same FID. | |
786 | */ | |
787 | local_fid = FC_LOCAL_PTP_FID_LO; | |
788 | if (remote_wwpn < lport->wwpn) { | |
789 | local_fid = FC_LOCAL_PTP_FID_HI; | |
790 | if (!remote_fid || remote_fid == local_fid) | |
791 | remote_fid = FC_LOCAL_PTP_FID_LO; | |
792 | } else if (!remote_fid) { | |
793 | remote_fid = FC_LOCAL_PTP_FID_HI; | |
794 | } | |
795 | ||
796 | fc_host_port_id(lport->host) = local_fid; | |
797 | ||
798 | fp = fc_frame_alloc(lport, sizeof(*flp)); | |
799 | if (fp) { | |
800 | sp = lport->tt.seq_start_next(fr_seq(rx_fp)); | |
801 | new_flp = fc_frame_payload_get(fp, sizeof(*flp)); | |
802 | fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI); | |
803 | new_flp->fl_cmd = (u8) ELS_LS_ACC; | |
804 | ||
805 | /* | |
806 | * Send the response. If this fails, the originator should | |
807 | * repeat the sequence. | |
808 | */ | |
809 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; | |
810 | ep = fc_seq_exch(sp); | |
811 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
812 | FC_TYPE_ELS, f_ctl, 0); | |
813 | lport->tt.seq_send(lport, sp, fp); | |
814 | ||
815 | } else { | |
816 | fc_lport_error(lport, fp); | |
817 | } | |
818 | fc_lport_ptp_setup(lport, remote_fid, remote_wwpn, | |
819 | get_unaligned_be64(&flp->fl_wwnn)); | |
820 | ||
821 | lport->tt.disc_start(fc_lport_disc_callback, lport); | |
822 | ||
823 | out: | |
824 | sp = fr_seq(rx_fp); | |
825 | fc_frame_free(rx_fp); | |
826 | } | |
827 | ||
828 | /** | |
34f42a07 | 829 | * fc_lport_recv_req() - The generic lport request handler |
42e9a92f RL |
830 | * @lport: The lport that received the request |
831 | * @sp: The sequence the request is on | |
832 | * @fp: The frame the request is in | |
833 | * | |
834 | * This function will see if the lport handles the request or | |
835 | * if an rport should handle the request. | |
836 | * | |
837 | * Locking Note: This function should not be called with the lport | |
838 | * lock held becuase it will grab the lock. | |
839 | */ | |
840 | static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp, | |
841 | struct fc_frame *fp) | |
842 | { | |
843 | struct fc_frame_header *fh = fc_frame_header_get(fp); | |
844 | void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *); | |
845 | struct fc_rport *rport; | |
846 | u32 s_id; | |
847 | u32 d_id; | |
848 | struct fc_seq_els_data rjt_data; | |
849 | ||
850 | mutex_lock(&lport->lp_mutex); | |
851 | ||
852 | /* | |
853 | * Handle special ELS cases like FLOGI, LOGO, and | |
854 | * RSCN here. These don't require a session. | |
855 | * Even if we had a session, it might not be ready. | |
856 | */ | |
857 | if (fh->fh_type == FC_TYPE_ELS && fh->fh_r_ctl == FC_RCTL_ELS_REQ) { | |
858 | /* | |
859 | * Check opcode. | |
860 | */ | |
861 | recv = NULL; | |
862 | switch (fc_frame_payload_op(fp)) { | |
863 | case ELS_FLOGI: | |
864 | recv = fc_lport_recv_flogi_req; | |
865 | break; | |
866 | case ELS_LOGO: | |
867 | fh = fc_frame_header_get(fp); | |
868 | if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) | |
869 | recv = fc_lport_recv_logo_req; | |
870 | break; | |
871 | case ELS_RSCN: | |
872 | recv = lport->tt.disc_recv_req; | |
873 | break; | |
874 | case ELS_ECHO: | |
875 | recv = fc_lport_recv_echo_req; | |
876 | break; | |
877 | case ELS_RLIR: | |
878 | recv = fc_lport_recv_rlir_req; | |
879 | break; | |
880 | case ELS_RNID: | |
881 | recv = fc_lport_recv_rnid_req; | |
882 | break; | |
883 | case ELS_ADISC: | |
884 | recv = fc_lport_recv_adisc_req; | |
885 | break; | |
886 | } | |
887 | ||
888 | if (recv) | |
889 | recv(sp, fp, lport); | |
890 | else { | |
891 | /* | |
892 | * Find session. | |
893 | * If this is a new incoming PLOGI, we won't find it. | |
894 | */ | |
895 | s_id = ntoh24(fh->fh_s_id); | |
896 | d_id = ntoh24(fh->fh_d_id); | |
897 | ||
898 | rport = lport->tt.rport_lookup(lport, s_id); | |
899 | if (rport) | |
900 | lport->tt.rport_recv_req(sp, fp, rport); | |
901 | else { | |
902 | rjt_data.fp = NULL; | |
903 | rjt_data.reason = ELS_RJT_UNAB; | |
904 | rjt_data.explan = ELS_EXPL_NONE; | |
905 | lport->tt.seq_els_rsp_send(sp, | |
906 | ELS_LS_RJT, | |
907 | &rjt_data); | |
908 | fc_frame_free(fp); | |
909 | } | |
910 | } | |
911 | } else { | |
912 | FC_DBG("dropping invalid frame (eof %x)\n", fr_eof(fp)); | |
913 | fc_frame_free(fp); | |
914 | } | |
915 | mutex_unlock(&lport->lp_mutex); | |
916 | ||
917 | /* | |
918 | * The common exch_done for all request may not be good | |
919 | * if any request requires longer hold on exhange. XXX | |
920 | */ | |
921 | lport->tt.exch_done(sp); | |
922 | } | |
923 | ||
924 | /** | |
34f42a07 | 925 | * fc_lport_reset() - Reset an lport |
42e9a92f RL |
926 | * @lport: The lport which should be reset |
927 | * | |
928 | * Locking Note: This functions should not be called with the | |
929 | * lport lock held. | |
930 | */ | |
931 | int fc_lport_reset(struct fc_lport *lport) | |
932 | { | |
f7db2c15 | 933 | cancel_delayed_work_sync(&lport->retry_work); |
42e9a92f RL |
934 | mutex_lock(&lport->lp_mutex); |
935 | fc_lport_enter_reset(lport); | |
936 | mutex_unlock(&lport->lp_mutex); | |
937 | return 0; | |
938 | } | |
939 | EXPORT_SYMBOL(fc_lport_reset); | |
940 | ||
941 | /** | |
34f42a07 | 942 | * fc_rport_enter_reset() - Reset the local port |
42e9a92f RL |
943 | * @lport: Fibre Channel local port to be reset |
944 | * | |
945 | * Locking Note: The lport lock is expected to be held before calling | |
946 | * this routine. | |
947 | */ | |
948 | static void fc_lport_enter_reset(struct fc_lport *lport) | |
949 | { | |
950 | FC_DEBUG_LPORT("Port (%6x) entered RESET state from %s state\n", | |
951 | fc_host_port_id(lport->host), fc_lport_state(lport)); | |
952 | ||
953 | fc_lport_state_enter(lport, LPORT_ST_RESET); | |
954 | ||
955 | if (lport->dns_rp) | |
956 | lport->tt.rport_logoff(lport->dns_rp); | |
957 | ||
958 | if (lport->ptp_rp) { | |
959 | lport->tt.rport_logoff(lport->ptp_rp); | |
960 | lport->ptp_rp = NULL; | |
961 | } | |
962 | ||
963 | lport->tt.disc_stop(lport); | |
964 | ||
1f6ff364 | 965 | lport->tt.exch_mgr_reset(lport, 0, 0); |
42e9a92f RL |
966 | fc_host_fabric_name(lport->host) = 0; |
967 | fc_host_port_id(lport->host) = 0; | |
968 | ||
bc0e17f6 | 969 | if (lport->link_up) |
42e9a92f RL |
970 | fc_lport_enter_flogi(lport); |
971 | } | |
972 | ||
973 | /** | |
34f42a07 | 974 | * fc_lport_error() - Handler for any errors |
42e9a92f RL |
975 | * @lport: The fc_lport object |
976 | * @fp: The frame pointer | |
977 | * | |
978 | * If the error was caused by a resource allocation failure | |
979 | * then wait for half a second and retry, otherwise retry | |
980 | * after the e_d_tov time. | |
981 | */ | |
982 | static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp) | |
983 | { | |
984 | unsigned long delay = 0; | |
985 | FC_DEBUG_LPORT("Error %ld in state %s, retries %d\n", | |
986 | PTR_ERR(fp), fc_lport_state(lport), | |
987 | lport->retry_count); | |
988 | ||
989 | if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) { | |
990 | /* | |
991 | * Memory allocation failure, or the exchange timed out. | |
992 | * Retry after delay | |
993 | */ | |
994 | if (lport->retry_count < lport->max_retry_count) { | |
995 | lport->retry_count++; | |
996 | if (!fp) | |
997 | delay = msecs_to_jiffies(500); | |
998 | else | |
999 | delay = msecs_to_jiffies(lport->e_d_tov); | |
1000 | ||
1001 | schedule_delayed_work(&lport->retry_work, delay); | |
1002 | } else { | |
1003 | switch (lport->state) { | |
1004 | case LPORT_ST_NONE: | |
1005 | case LPORT_ST_READY: | |
1006 | case LPORT_ST_RESET: | |
1007 | case LPORT_ST_RPN_ID: | |
1008 | case LPORT_ST_RFT_ID: | |
1009 | case LPORT_ST_SCR: | |
1010 | case LPORT_ST_DNS: | |
1011 | case LPORT_ST_FLOGI: | |
1012 | case LPORT_ST_LOGO: | |
1013 | fc_lport_enter_reset(lport); | |
1014 | break; | |
1015 | } | |
1016 | } | |
1017 | } | |
1018 | } | |
1019 | ||
1020 | /** | |
34f42a07 RL |
1021 | * fc_lport_rft_id_resp() - Handle response to Register Fibre |
1022 | * Channel Types by ID (RPN_ID) request | |
42e9a92f RL |
1023 | * @sp: current sequence in RPN_ID exchange |
1024 | * @fp: response frame | |
1025 | * @lp_arg: Fibre Channel host port instance | |
1026 | * | |
1027 | * Locking Note: This function will be called without the lport lock | |
1028 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1029 | * and then unlock the lport. | |
1030 | */ | |
1031 | static void fc_lport_rft_id_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1032 | void *lp_arg) | |
1033 | { | |
1034 | struct fc_lport *lport = lp_arg; | |
1035 | struct fc_frame_header *fh; | |
1036 | struct fc_ct_hdr *ct; | |
1037 | ||
1038 | if (fp == ERR_PTR(-FC_EX_CLOSED)) | |
1039 | return; | |
1040 | ||
1041 | mutex_lock(&lport->lp_mutex); | |
1042 | ||
1043 | FC_DEBUG_LPORT("Received a RFT_ID response\n"); | |
1044 | ||
1045 | if (lport->state != LPORT_ST_RFT_ID) { | |
1046 | FC_DBG("Received a RFT_ID response, but in state %s\n", | |
1047 | fc_lport_state(lport)); | |
76f6804e AJ |
1048 | if (IS_ERR(fp)) |
1049 | goto err; | |
42e9a92f RL |
1050 | goto out; |
1051 | } | |
1052 | ||
76f6804e AJ |
1053 | if (IS_ERR(fp)) { |
1054 | fc_lport_error(lport, fp); | |
1055 | goto err; | |
1056 | } | |
1057 | ||
42e9a92f RL |
1058 | fh = fc_frame_header_get(fp); |
1059 | ct = fc_frame_payload_get(fp, sizeof(*ct)); | |
1060 | ||
1061 | if (fh && ct && fh->fh_type == FC_TYPE_CT && | |
1062 | ct->ct_fs_type == FC_FST_DIR && | |
1063 | ct->ct_fs_subtype == FC_NS_SUBTYPE && | |
1064 | ntohs(ct->ct_cmd) == FC_FS_ACC) | |
1065 | fc_lport_enter_scr(lport); | |
1066 | else | |
1067 | fc_lport_error(lport, fp); | |
1068 | out: | |
1069 | fc_frame_free(fp); | |
1070 | err: | |
1071 | mutex_unlock(&lport->lp_mutex); | |
1072 | } | |
1073 | ||
1074 | /** | |
34f42a07 RL |
1075 | * fc_lport_rpn_id_resp() - Handle response to Register Port |
1076 | * Name by ID (RPN_ID) request | |
42e9a92f RL |
1077 | * @sp: current sequence in RPN_ID exchange |
1078 | * @fp: response frame | |
1079 | * @lp_arg: Fibre Channel host port instance | |
1080 | * | |
1081 | * Locking Note: This function will be called without the lport lock | |
1082 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1083 | * and then unlock the lport. | |
1084 | */ | |
1085 | static void fc_lport_rpn_id_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1086 | void *lp_arg) | |
1087 | { | |
1088 | struct fc_lport *lport = lp_arg; | |
1089 | struct fc_frame_header *fh; | |
1090 | struct fc_ct_hdr *ct; | |
1091 | ||
1092 | if (fp == ERR_PTR(-FC_EX_CLOSED)) | |
1093 | return; | |
1094 | ||
1095 | mutex_lock(&lport->lp_mutex); | |
1096 | ||
1097 | FC_DEBUG_LPORT("Received a RPN_ID response\n"); | |
1098 | ||
1099 | if (lport->state != LPORT_ST_RPN_ID) { | |
1100 | FC_DBG("Received a RPN_ID response, but in state %s\n", | |
1101 | fc_lport_state(lport)); | |
76f6804e AJ |
1102 | if (IS_ERR(fp)) |
1103 | goto err; | |
42e9a92f RL |
1104 | goto out; |
1105 | } | |
1106 | ||
76f6804e AJ |
1107 | if (IS_ERR(fp)) { |
1108 | fc_lport_error(lport, fp); | |
1109 | goto err; | |
1110 | } | |
1111 | ||
42e9a92f RL |
1112 | fh = fc_frame_header_get(fp); |
1113 | ct = fc_frame_payload_get(fp, sizeof(*ct)); | |
1114 | if (fh && ct && fh->fh_type == FC_TYPE_CT && | |
1115 | ct->ct_fs_type == FC_FST_DIR && | |
1116 | ct->ct_fs_subtype == FC_NS_SUBTYPE && | |
1117 | ntohs(ct->ct_cmd) == FC_FS_ACC) | |
1118 | fc_lport_enter_rft_id(lport); | |
1119 | else | |
1120 | fc_lport_error(lport, fp); | |
1121 | ||
1122 | out: | |
1123 | fc_frame_free(fp); | |
1124 | err: | |
1125 | mutex_unlock(&lport->lp_mutex); | |
1126 | } | |
1127 | ||
1128 | /** | |
34f42a07 | 1129 | * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request |
42e9a92f RL |
1130 | * @sp: current sequence in SCR exchange |
1131 | * @fp: response frame | |
1132 | * @lp_arg: Fibre Channel lport port instance that sent the registration request | |
1133 | * | |
1134 | * Locking Note: This function will be called without the lport lock | |
1135 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1136 | * and then unlock the lport. | |
1137 | */ | |
1138 | static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1139 | void *lp_arg) | |
1140 | { | |
1141 | struct fc_lport *lport = lp_arg; | |
1142 | u8 op; | |
1143 | ||
1144 | if (fp == ERR_PTR(-FC_EX_CLOSED)) | |
1145 | return; | |
1146 | ||
1147 | mutex_lock(&lport->lp_mutex); | |
1148 | ||
1149 | FC_DEBUG_LPORT("Received a SCR response\n"); | |
1150 | ||
1151 | if (lport->state != LPORT_ST_SCR) { | |
1152 | FC_DBG("Received a SCR response, but in state %s\n", | |
1153 | fc_lport_state(lport)); | |
76f6804e AJ |
1154 | if (IS_ERR(fp)) |
1155 | goto err; | |
42e9a92f RL |
1156 | goto out; |
1157 | } | |
1158 | ||
76f6804e AJ |
1159 | if (IS_ERR(fp)) { |
1160 | fc_lport_error(lport, fp); | |
1161 | goto err; | |
1162 | } | |
1163 | ||
42e9a92f RL |
1164 | op = fc_frame_payload_op(fp); |
1165 | if (op == ELS_LS_ACC) | |
1166 | fc_lport_enter_ready(lport); | |
1167 | else | |
1168 | fc_lport_error(lport, fp); | |
1169 | ||
1170 | out: | |
1171 | fc_frame_free(fp); | |
1172 | err: | |
1173 | mutex_unlock(&lport->lp_mutex); | |
1174 | } | |
1175 | ||
1176 | /** | |
34f42a07 | 1177 | * fc_lport_enter_scr() - Send a State Change Register (SCR) request |
42e9a92f RL |
1178 | * @lport: Fibre Channel local port to register for state changes |
1179 | * | |
1180 | * Locking Note: The lport lock is expected to be held before calling | |
1181 | * this routine. | |
1182 | */ | |
1183 | static void fc_lport_enter_scr(struct fc_lport *lport) | |
1184 | { | |
1185 | struct fc_frame *fp; | |
1186 | ||
1187 | FC_DEBUG_LPORT("Port (%6x) entered SCR state from %s state\n", | |
1188 | fc_host_port_id(lport->host), fc_lport_state(lport)); | |
1189 | ||
1190 | fc_lport_state_enter(lport, LPORT_ST_SCR); | |
1191 | ||
1192 | fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr)); | |
1193 | if (!fp) { | |
1194 | fc_lport_error(lport, fp); | |
1195 | return; | |
1196 | } | |
1197 | ||
1198 | if (!lport->tt.elsct_send(lport, NULL, fp, ELS_SCR, | |
1199 | fc_lport_scr_resp, lport, lport->e_d_tov)) | |
1200 | fc_lport_error(lport, fp); | |
1201 | } | |
1202 | ||
1203 | /** | |
34f42a07 | 1204 | * fc_lport_enter_rft_id() - Register FC4-types with the name server |
42e9a92f RL |
1205 | * @lport: Fibre Channel local port to register |
1206 | * | |
1207 | * Locking Note: The lport lock is expected to be held before calling | |
1208 | * this routine. | |
1209 | */ | |
1210 | static void fc_lport_enter_rft_id(struct fc_lport *lport) | |
1211 | { | |
1212 | struct fc_frame *fp; | |
1213 | struct fc_ns_fts *lps; | |
1214 | int i; | |
1215 | ||
1216 | FC_DEBUG_LPORT("Port (%6x) entered RFT_ID state from %s state\n", | |
1217 | fc_host_port_id(lport->host), fc_lport_state(lport)); | |
1218 | ||
1219 | fc_lport_state_enter(lport, LPORT_ST_RFT_ID); | |
1220 | ||
1221 | lps = &lport->fcts; | |
1222 | i = sizeof(lps->ff_type_map) / sizeof(lps->ff_type_map[0]); | |
1223 | while (--i >= 0) | |
1224 | if (ntohl(lps->ff_type_map[i]) != 0) | |
1225 | break; | |
1226 | if (i < 0) { | |
1227 | /* nothing to register, move on to SCR */ | |
1228 | fc_lport_enter_scr(lport); | |
1229 | return; | |
1230 | } | |
1231 | ||
1232 | fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + | |
1233 | sizeof(struct fc_ns_rft)); | |
1234 | if (!fp) { | |
1235 | fc_lport_error(lport, fp); | |
1236 | return; | |
1237 | } | |
1238 | ||
1239 | if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RFT_ID, | |
1240 | fc_lport_rft_id_resp, | |
1241 | lport, lport->e_d_tov)) | |
1242 | fc_lport_error(lport, fp); | |
1243 | } | |
1244 | ||
1245 | /** | |
34f42a07 | 1246 | * fc_rport_enter_rft_id() - Register port name with the name server |
42e9a92f RL |
1247 | * @lport: Fibre Channel local port to register |
1248 | * | |
1249 | * Locking Note: The lport lock is expected to be held before calling | |
1250 | * this routine. | |
1251 | */ | |
1252 | static void fc_lport_enter_rpn_id(struct fc_lport *lport) | |
1253 | { | |
1254 | struct fc_frame *fp; | |
1255 | ||
1256 | FC_DEBUG_LPORT("Port (%6x) entered RPN_ID state from %s state\n", | |
1257 | fc_host_port_id(lport->host), fc_lport_state(lport)); | |
1258 | ||
1259 | fc_lport_state_enter(lport, LPORT_ST_RPN_ID); | |
1260 | ||
1261 | fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + | |
1262 | sizeof(struct fc_ns_rn_id)); | |
1263 | if (!fp) { | |
1264 | fc_lport_error(lport, fp); | |
1265 | return; | |
1266 | } | |
1267 | ||
1268 | if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RPN_ID, | |
1269 | fc_lport_rpn_id_resp, | |
1270 | lport, lport->e_d_tov)) | |
1271 | fc_lport_error(lport, fp); | |
1272 | } | |
1273 | ||
1274 | static struct fc_rport_operations fc_lport_rport_ops = { | |
1275 | .event_callback = fc_lport_rport_callback, | |
1276 | }; | |
1277 | ||
1278 | /** | |
34f42a07 | 1279 | * fc_rport_enter_dns() - Create a rport to the name server |
42e9a92f RL |
1280 | * @lport: Fibre Channel local port requesting a rport for the name server |
1281 | * | |
1282 | * Locking Note: The lport lock is expected to be held before calling | |
1283 | * this routine. | |
1284 | */ | |
1285 | static void fc_lport_enter_dns(struct fc_lport *lport) | |
1286 | { | |
1287 | struct fc_rport *rport; | |
1288 | struct fc_rport_libfc_priv *rdata; | |
1289 | struct fc_disc_port dp; | |
1290 | ||
1291 | dp.ids.port_id = FC_FID_DIR_SERV; | |
1292 | dp.ids.port_name = -1; | |
1293 | dp.ids.node_name = -1; | |
1294 | dp.ids.roles = FC_RPORT_ROLE_UNKNOWN; | |
1295 | dp.lp = lport; | |
1296 | ||
1297 | FC_DEBUG_LPORT("Port (%6x) entered DNS state from %s state\n", | |
1298 | fc_host_port_id(lport->host), fc_lport_state(lport)); | |
1299 | ||
1300 | fc_lport_state_enter(lport, LPORT_ST_DNS); | |
1301 | ||
5101ff99 | 1302 | rport = lport->tt.rport_create(&dp); |
42e9a92f RL |
1303 | if (!rport) |
1304 | goto err; | |
1305 | ||
1306 | rdata = rport->dd_data; | |
1307 | rdata->ops = &fc_lport_rport_ops; | |
1308 | lport->tt.rport_login(rport); | |
1309 | return; | |
1310 | ||
1311 | err: | |
1312 | fc_lport_error(lport, NULL); | |
1313 | } | |
1314 | ||
1315 | /** | |
34f42a07 | 1316 | * fc_lport_timeout() - Handler for the retry_work timer. |
42e9a92f RL |
1317 | * @work: The work struct of the fc_lport |
1318 | */ | |
1319 | static void fc_lport_timeout(struct work_struct *work) | |
1320 | { | |
1321 | struct fc_lport *lport = | |
1322 | container_of(work, struct fc_lport, | |
1323 | retry_work.work); | |
1324 | ||
1325 | mutex_lock(&lport->lp_mutex); | |
1326 | ||
1327 | switch (lport->state) { | |
1328 | case LPORT_ST_NONE: | |
1329 | case LPORT_ST_READY: | |
1330 | case LPORT_ST_RESET: | |
1331 | WARN_ON(1); | |
1332 | break; | |
1333 | case LPORT_ST_FLOGI: | |
1334 | fc_lport_enter_flogi(lport); | |
1335 | break; | |
1336 | case LPORT_ST_DNS: | |
1337 | fc_lport_enter_dns(lport); | |
1338 | break; | |
1339 | case LPORT_ST_RPN_ID: | |
1340 | fc_lport_enter_rpn_id(lport); | |
1341 | break; | |
1342 | case LPORT_ST_RFT_ID: | |
1343 | fc_lport_enter_rft_id(lport); | |
1344 | break; | |
1345 | case LPORT_ST_SCR: | |
1346 | fc_lport_enter_scr(lport); | |
1347 | break; | |
1348 | case LPORT_ST_LOGO: | |
1349 | fc_lport_enter_logo(lport); | |
1350 | break; | |
1351 | } | |
1352 | ||
1353 | mutex_unlock(&lport->lp_mutex); | |
1354 | } | |
1355 | ||
1356 | /** | |
34f42a07 | 1357 | * fc_lport_logo_resp() - Handle response to LOGO request |
42e9a92f RL |
1358 | * @sp: current sequence in LOGO exchange |
1359 | * @fp: response frame | |
1360 | * @lp_arg: Fibre Channel lport port instance that sent the LOGO request | |
1361 | * | |
1362 | * Locking Note: This function will be called without the lport lock | |
1363 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1364 | * and then unlock the lport. | |
1365 | */ | |
1366 | static void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1367 | void *lp_arg) | |
1368 | { | |
1369 | struct fc_lport *lport = lp_arg; | |
1370 | u8 op; | |
1371 | ||
1372 | if (fp == ERR_PTR(-FC_EX_CLOSED)) | |
1373 | return; | |
1374 | ||
1375 | mutex_lock(&lport->lp_mutex); | |
1376 | ||
1377 | FC_DEBUG_LPORT("Received a LOGO response\n"); | |
1378 | ||
1379 | if (lport->state != LPORT_ST_LOGO) { | |
1380 | FC_DBG("Received a LOGO response, but in state %s\n", | |
1381 | fc_lport_state(lport)); | |
76f6804e AJ |
1382 | if (IS_ERR(fp)) |
1383 | goto err; | |
42e9a92f RL |
1384 | goto out; |
1385 | } | |
1386 | ||
76f6804e AJ |
1387 | if (IS_ERR(fp)) { |
1388 | fc_lport_error(lport, fp); | |
1389 | goto err; | |
1390 | } | |
1391 | ||
42e9a92f RL |
1392 | op = fc_frame_payload_op(fp); |
1393 | if (op == ELS_LS_ACC) | |
1394 | fc_lport_enter_reset(lport); | |
1395 | else | |
1396 | fc_lport_error(lport, fp); | |
1397 | ||
1398 | out: | |
1399 | fc_frame_free(fp); | |
1400 | err: | |
1401 | mutex_unlock(&lport->lp_mutex); | |
1402 | } | |
1403 | ||
1404 | /** | |
34f42a07 | 1405 | * fc_rport_enter_logo() - Logout of the fabric |
42e9a92f RL |
1406 | * @lport: Fibre Channel local port to be logged out |
1407 | * | |
1408 | * Locking Note: The lport lock is expected to be held before calling | |
1409 | * this routine. | |
1410 | */ | |
1411 | static void fc_lport_enter_logo(struct fc_lport *lport) | |
1412 | { | |
1413 | struct fc_frame *fp; | |
1414 | struct fc_els_logo *logo; | |
1415 | ||
1416 | FC_DEBUG_LPORT("Port (%6x) entered LOGO state from %s state\n", | |
1417 | fc_host_port_id(lport->host), fc_lport_state(lport)); | |
1418 | ||
1419 | fc_lport_state_enter(lport, LPORT_ST_LOGO); | |
1420 | ||
42e9a92f RL |
1421 | fp = fc_frame_alloc(lport, sizeof(*logo)); |
1422 | if (!fp) { | |
1423 | fc_lport_error(lport, fp); | |
1424 | return; | |
1425 | } | |
1426 | ||
1427 | if (!lport->tt.elsct_send(lport, NULL, fp, ELS_LOGO, fc_lport_logo_resp, | |
1428 | lport, lport->e_d_tov)) | |
1429 | fc_lport_error(lport, fp); | |
1430 | } | |
1431 | ||
1432 | /** | |
34f42a07 | 1433 | * fc_lport_flogi_resp() - Handle response to FLOGI request |
42e9a92f RL |
1434 | * @sp: current sequence in FLOGI exchange |
1435 | * @fp: response frame | |
1436 | * @lp_arg: Fibre Channel lport port instance that sent the FLOGI request | |
1437 | * | |
1438 | * Locking Note: This function will be called without the lport lock | |
1439 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1440 | * and then unlock the lport. | |
1441 | */ | |
1442 | static void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1443 | void *lp_arg) | |
1444 | { | |
1445 | struct fc_lport *lport = lp_arg; | |
1446 | struct fc_frame_header *fh; | |
1447 | struct fc_els_flogi *flp; | |
1448 | u32 did; | |
1449 | u16 csp_flags; | |
1450 | unsigned int r_a_tov; | |
1451 | unsigned int e_d_tov; | |
1452 | u16 mfs; | |
1453 | ||
1454 | if (fp == ERR_PTR(-FC_EX_CLOSED)) | |
1455 | return; | |
1456 | ||
1457 | mutex_lock(&lport->lp_mutex); | |
1458 | ||
1459 | FC_DEBUG_LPORT("Received a FLOGI response\n"); | |
1460 | ||
1461 | if (lport->state != LPORT_ST_FLOGI) { | |
1462 | FC_DBG("Received a FLOGI response, but in state %s\n", | |
1463 | fc_lport_state(lport)); | |
76f6804e AJ |
1464 | if (IS_ERR(fp)) |
1465 | goto err; | |
42e9a92f RL |
1466 | goto out; |
1467 | } | |
1468 | ||
76f6804e AJ |
1469 | if (IS_ERR(fp)) { |
1470 | fc_lport_error(lport, fp); | |
1471 | goto err; | |
1472 | } | |
1473 | ||
42e9a92f RL |
1474 | fh = fc_frame_header_get(fp); |
1475 | did = ntoh24(fh->fh_d_id); | |
1476 | if (fc_frame_payload_op(fp) == ELS_LS_ACC && did != 0) { | |
1477 | ||
1478 | FC_DEBUG_LPORT("Assigned fid %x\n", did); | |
1479 | fc_host_port_id(lport->host) = did; | |
1480 | ||
1481 | flp = fc_frame_payload_get(fp, sizeof(*flp)); | |
1482 | if (flp) { | |
1483 | mfs = ntohs(flp->fl_csp.sp_bb_data) & | |
1484 | FC_SP_BB_DATA_MASK; | |
1485 | if (mfs >= FC_SP_MIN_MAX_PAYLOAD && | |
1486 | mfs < lport->mfs) | |
1487 | lport->mfs = mfs; | |
1488 | csp_flags = ntohs(flp->fl_csp.sp_features); | |
1489 | r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov); | |
1490 | e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov); | |
1491 | if (csp_flags & FC_SP_FT_EDTR) | |
1492 | e_d_tov /= 1000000; | |
1493 | if ((csp_flags & FC_SP_FT_FPORT) == 0) { | |
1494 | if (e_d_tov > lport->e_d_tov) | |
1495 | lport->e_d_tov = e_d_tov; | |
1496 | lport->r_a_tov = 2 * e_d_tov; | |
1497 | FC_DBG("Point-to-Point mode\n"); | |
1498 | fc_lport_ptp_setup(lport, ntoh24(fh->fh_s_id), | |
1499 | get_unaligned_be64( | |
1500 | &flp->fl_wwpn), | |
1501 | get_unaligned_be64( | |
1502 | &flp->fl_wwnn)); | |
1503 | } else { | |
1504 | lport->e_d_tov = e_d_tov; | |
1505 | lport->r_a_tov = r_a_tov; | |
1506 | fc_host_fabric_name(lport->host) = | |
1507 | get_unaligned_be64(&flp->fl_wwnn); | |
1508 | fc_lport_enter_dns(lport); | |
1509 | } | |
1510 | } | |
1511 | ||
1512 | if (flp) { | |
1513 | csp_flags = ntohs(flp->fl_csp.sp_features); | |
1514 | if ((csp_flags & FC_SP_FT_FPORT) == 0) { | |
1515 | lport->tt.disc_start(fc_lport_disc_callback, | |
1516 | lport); | |
1517 | } | |
1518 | } | |
1519 | } else { | |
1520 | FC_DBG("bad FLOGI response\n"); | |
1521 | } | |
1522 | ||
1523 | out: | |
1524 | fc_frame_free(fp); | |
1525 | err: | |
1526 | mutex_unlock(&lport->lp_mutex); | |
1527 | } | |
1528 | ||
1529 | /** | |
34f42a07 | 1530 | * fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager |
42e9a92f RL |
1531 | * @lport: Fibre Channel local port to be logged in to the fabric |
1532 | * | |
1533 | * Locking Note: The lport lock is expected to be held before calling | |
1534 | * this routine. | |
1535 | */ | |
1536 | void fc_lport_enter_flogi(struct fc_lport *lport) | |
1537 | { | |
1538 | struct fc_frame *fp; | |
1539 | ||
1540 | FC_DEBUG_LPORT("Processing FLOGI state\n"); | |
1541 | ||
1542 | fc_lport_state_enter(lport, LPORT_ST_FLOGI); | |
1543 | ||
1544 | fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); | |
1545 | if (!fp) | |
1546 | return fc_lport_error(lport, fp); | |
1547 | ||
1548 | if (!lport->tt.elsct_send(lport, NULL, fp, ELS_FLOGI, | |
1549 | fc_lport_flogi_resp, lport, lport->e_d_tov)) | |
1550 | fc_lport_error(lport, fp); | |
1551 | } | |
1552 | ||
1553 | /* Configure a fc_lport */ | |
1554 | int fc_lport_config(struct fc_lport *lport) | |
1555 | { | |
1556 | INIT_DELAYED_WORK(&lport->retry_work, fc_lport_timeout); | |
1557 | mutex_init(&lport->lp_mutex); | |
1558 | ||
1559 | fc_lport_state_enter(lport, LPORT_ST_NONE); | |
1560 | ||
1561 | fc_lport_add_fc4_type(lport, FC_TYPE_FCP); | |
1562 | fc_lport_add_fc4_type(lport, FC_TYPE_CT); | |
1563 | ||
1564 | return 0; | |
1565 | } | |
1566 | EXPORT_SYMBOL(fc_lport_config); | |
1567 | ||
1568 | int fc_lport_init(struct fc_lport *lport) | |
1569 | { | |
1570 | if (!lport->tt.lport_recv) | |
1571 | lport->tt.lport_recv = fc_lport_recv_req; | |
1572 | ||
1573 | if (!lport->tt.lport_reset) | |
1574 | lport->tt.lport_reset = fc_lport_reset; | |
1575 | ||
1576 | fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; | |
1577 | fc_host_node_name(lport->host) = lport->wwnn; | |
1578 | fc_host_port_name(lport->host) = lport->wwpn; | |
1579 | fc_host_supported_classes(lport->host) = FC_COS_CLASS3; | |
1580 | memset(fc_host_supported_fc4s(lport->host), 0, | |
1581 | sizeof(fc_host_supported_fc4s(lport->host))); | |
1582 | fc_host_supported_fc4s(lport->host)[2] = 1; | |
1583 | fc_host_supported_fc4s(lport->host)[7] = 1; | |
1584 | ||
1585 | /* This value is also unchanging */ | |
1586 | memset(fc_host_active_fc4s(lport->host), 0, | |
1587 | sizeof(fc_host_active_fc4s(lport->host))); | |
1588 | fc_host_active_fc4s(lport->host)[2] = 1; | |
1589 | fc_host_active_fc4s(lport->host)[7] = 1; | |
1590 | fc_host_maxframe_size(lport->host) = lport->mfs; | |
1591 | fc_host_supported_speeds(lport->host) = 0; | |
1592 | if (lport->link_supported_speeds & FC_PORTSPEED_1GBIT) | |
1593 | fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_1GBIT; | |
1594 | if (lport->link_supported_speeds & FC_PORTSPEED_10GBIT) | |
1595 | fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_10GBIT; | |
1596 | ||
1597 | return 0; | |
1598 | } | |
1599 | EXPORT_SYMBOL(fc_lport_init); |