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42e9a92f RL |
1 | /* |
2 | * Copyright(c) 2007 Intel Corporation. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., | |
15 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | * | |
17 | * Maintained at www.Open-FCoE.org | |
18 | */ | |
19 | ||
20 | /* | |
21 | * PORT LOCKING NOTES | |
22 | * | |
23 | * These comments only apply to the 'port code' which consists of the lport, | |
24 | * disc and rport blocks. | |
25 | * | |
26 | * MOTIVATION | |
27 | * | |
28 | * The lport, disc and rport blocks all have mutexes that are used to protect | |
29 | * those objects. The main motivation for these locks is to prevent from | |
30 | * having an lport reset just before we send a frame. In that scenario the | |
31 | * lport's FID would get set to zero and then we'd send a frame with an | |
32 | * invalid SID. We also need to ensure that states don't change unexpectedly | |
33 | * while processing another state. | |
34 | * | |
35 | * HEIRARCHY | |
36 | * | |
37 | * The following heirarchy defines the locking rules. A greater lock | |
38 | * may be held before acquiring a lesser lock, but a lesser lock should never | |
39 | * be held while attempting to acquire a greater lock. Here is the heirarchy- | |
40 | * | |
41 | * lport > disc, lport > rport, disc > rport | |
42 | * | |
43 | * CALLBACKS | |
44 | * | |
45 | * The callbacks cause complications with this scheme. There is a callback | |
46 | * from the rport (to either lport or disc) and a callback from disc | |
47 | * (to the lport). | |
48 | * | |
49 | * As rports exit the rport state machine a callback is made to the owner of | |
50 | * the rport to notify success or failure. Since the callback is likely to | |
51 | * cause the lport or disc to grab its lock we cannot hold the rport lock | |
52 | * while making the callback. To ensure that the rport is not free'd while | |
53 | * processing the callback the rport callbacks are serialized through a | |
54 | * single-threaded workqueue. An rport would never be free'd while in a | |
55 | * callback handler becuase no other rport work in this queue can be executed | |
56 | * at the same time. | |
57 | * | |
58 | * When discovery succeeds or fails a callback is made to the lport as | |
59 | * notification. Currently, succesful discovery causes the lport to take no | |
60 | * action. A failure will cause the lport to reset. There is likely a circular | |
61 | * locking problem with this implementation. | |
62 | */ | |
63 | ||
64 | /* | |
65 | * LPORT LOCKING | |
66 | * | |
67 | * The critical sections protected by the lport's mutex are quite broad and | |
68 | * may be improved upon in the future. The lport code and its locking doesn't | |
69 | * influence the I/O path, so excessive locking doesn't penalize I/O | |
70 | * performance. | |
71 | * | |
72 | * The strategy is to lock whenever processing a request or response. Note | |
73 | * that every _enter_* function corresponds to a state change. They generally | |
74 | * change the lports state and then send a request out on the wire. We lock | |
75 | * before calling any of these functions to protect that state change. This | |
76 | * means that the entry points into the lport block manage the locks while | |
77 | * the state machine can transition between states (i.e. _enter_* functions) | |
78 | * while always staying protected. | |
79 | * | |
80 | * When handling responses we also hold the lport mutex broadly. When the | |
81 | * lport receives the response frame it locks the mutex and then calls the | |
82 | * appropriate handler for the particuar response. Generally a response will | |
83 | * trigger a state change and so the lock must already be held. | |
84 | * | |
85 | * Retries also have to consider the locking. The retries occur from a work | |
86 | * context and the work function will lock the lport and then retry the state | |
87 | * (i.e. _enter_* function). | |
88 | */ | |
89 | ||
90 | #include <linux/timer.h> | |
91 | #include <asm/unaligned.h> | |
92 | ||
93 | #include <scsi/fc/fc_gs.h> | |
94 | ||
95 | #include <scsi/libfc.h> | |
96 | #include <scsi/fc_encode.h> | |
97 | ||
98 | /* Fabric IDs to use for point-to-point mode, chosen on whims. */ | |
99 | #define FC_LOCAL_PTP_FID_LO 0x010101 | |
100 | #define FC_LOCAL_PTP_FID_HI 0x010102 | |
101 | ||
102 | #define DNS_DELAY 3 /* Discovery delay after RSCN (in seconds)*/ | |
103 | ||
42e9a92f RL |
104 | static void fc_lport_error(struct fc_lport *, struct fc_frame *); |
105 | ||
106 | static void fc_lport_enter_reset(struct fc_lport *); | |
107 | static void fc_lport_enter_flogi(struct fc_lport *); | |
108 | static void fc_lport_enter_dns(struct fc_lport *); | |
109 | static void fc_lport_enter_rpn_id(struct fc_lport *); | |
110 | static void fc_lport_enter_rft_id(struct fc_lport *); | |
111 | static void fc_lport_enter_scr(struct fc_lport *); | |
112 | static void fc_lport_enter_ready(struct fc_lport *); | |
113 | static void fc_lport_enter_logo(struct fc_lport *); | |
114 | ||
115 | static const char *fc_lport_state_names[] = { | |
b1d9fd55 | 116 | [LPORT_ST_DISABLED] = "disabled", |
42e9a92f RL |
117 | [LPORT_ST_FLOGI] = "FLOGI", |
118 | [LPORT_ST_DNS] = "dNS", | |
119 | [LPORT_ST_RPN_ID] = "RPN_ID", | |
120 | [LPORT_ST_RFT_ID] = "RFT_ID", | |
121 | [LPORT_ST_SCR] = "SCR", | |
122 | [LPORT_ST_READY] = "Ready", | |
123 | [LPORT_ST_LOGO] = "LOGO", | |
124 | [LPORT_ST_RESET] = "reset", | |
125 | }; | |
126 | ||
127 | static int fc_frame_drop(struct fc_lport *lport, struct fc_frame *fp) | |
128 | { | |
129 | fc_frame_free(fp); | |
130 | return 0; | |
131 | } | |
132 | ||
133 | /** | |
34f42a07 | 134 | * fc_lport_rport_callback() - Event handler for rport events |
42e9a92f RL |
135 | * @lport: The lport which is receiving the event |
136 | * @rport: The rport which the event has occured on | |
137 | * @event: The event that occured | |
138 | * | |
139 | * Locking Note: The rport lock should not be held when calling | |
140 | * this function. | |
141 | */ | |
142 | static void fc_lport_rport_callback(struct fc_lport *lport, | |
143 | struct fc_rport *rport, | |
144 | enum fc_rport_event event) | |
145 | { | |
7414705e RL |
146 | FC_LPORT_DBG(lport, "Received a %d event for port (%6x)\n", event, |
147 | rport->port_id); | |
42e9a92f RL |
148 | |
149 | switch (event) { | |
150 | case RPORT_EV_CREATED: | |
151 | if (rport->port_id == FC_FID_DIR_SERV) { | |
152 | mutex_lock(&lport->lp_mutex); | |
153 | if (lport->state == LPORT_ST_DNS) { | |
154 | lport->dns_rp = rport; | |
155 | fc_lport_enter_rpn_id(lport); | |
156 | } else { | |
7414705e RL |
157 | FC_LPORT_DBG(lport, "Received an CREATED event " |
158 | "on port (%6x) for the directory " | |
159 | "server, but the lport is not " | |
160 | "in the DNS state, it's in the " | |
161 | "%d state", rport->port_id, | |
162 | lport->state); | |
42e9a92f RL |
163 | lport->tt.rport_logoff(rport); |
164 | } | |
165 | mutex_unlock(&lport->lp_mutex); | |
166 | } else | |
7414705e RL |
167 | FC_LPORT_DBG(lport, "Received an event for port (%6x) " |
168 | "which is not the directory server\n", | |
169 | rport->port_id); | |
42e9a92f RL |
170 | break; |
171 | case RPORT_EV_LOGO: | |
172 | case RPORT_EV_FAILED: | |
173 | case RPORT_EV_STOP: | |
174 | if (rport->port_id == FC_FID_DIR_SERV) { | |
175 | mutex_lock(&lport->lp_mutex); | |
176 | lport->dns_rp = NULL; | |
177 | mutex_unlock(&lport->lp_mutex); | |
178 | ||
179 | } else | |
7414705e RL |
180 | FC_LPORT_DBG(lport, "Received an event for port (%6x) " |
181 | "which is not the directory server\n", | |
182 | rport->port_id); | |
42e9a92f RL |
183 | break; |
184 | case RPORT_EV_NONE: | |
185 | break; | |
186 | } | |
187 | } | |
188 | ||
189 | /** | |
34f42a07 | 190 | * fc_lport_state() - Return a string which represents the lport's state |
42e9a92f RL |
191 | * @lport: The lport whose state is to converted to a string |
192 | */ | |
193 | static const char *fc_lport_state(struct fc_lport *lport) | |
194 | { | |
195 | const char *cp; | |
196 | ||
197 | cp = fc_lport_state_names[lport->state]; | |
198 | if (!cp) | |
199 | cp = "unknown"; | |
200 | return cp; | |
201 | } | |
202 | ||
203 | /** | |
34f42a07 | 204 | * fc_lport_ptp_setup() - Create an rport for point-to-point mode |
42e9a92f RL |
205 | * @lport: The lport to attach the ptp rport to |
206 | * @fid: The FID of the ptp rport | |
207 | * @remote_wwpn: The WWPN of the ptp rport | |
208 | * @remote_wwnn: The WWNN of the ptp rport | |
209 | */ | |
210 | static void fc_lport_ptp_setup(struct fc_lport *lport, | |
211 | u32 remote_fid, u64 remote_wwpn, | |
212 | u64 remote_wwnn) | |
213 | { | |
214 | struct fc_disc_port dp; | |
215 | ||
216 | dp.lp = lport; | |
217 | dp.ids.port_id = remote_fid; | |
218 | dp.ids.port_name = remote_wwpn; | |
219 | dp.ids.node_name = remote_wwnn; | |
220 | dp.ids.roles = FC_RPORT_ROLE_UNKNOWN; | |
221 | ||
222 | if (lport->ptp_rp) { | |
223 | lport->tt.rport_logoff(lport->ptp_rp); | |
224 | lport->ptp_rp = NULL; | |
225 | } | |
226 | ||
5101ff99 | 227 | lport->ptp_rp = lport->tt.rport_create(&dp); |
42e9a92f RL |
228 | |
229 | lport->tt.rport_login(lport->ptp_rp); | |
230 | ||
231 | fc_lport_enter_ready(lport); | |
232 | } | |
233 | ||
234 | void fc_get_host_port_type(struct Scsi_Host *shost) | |
235 | { | |
236 | /* TODO - currently just NPORT */ | |
237 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
238 | } | |
239 | EXPORT_SYMBOL(fc_get_host_port_type); | |
240 | ||
241 | void fc_get_host_port_state(struct Scsi_Host *shost) | |
242 | { | |
243 | struct fc_lport *lp = shost_priv(shost); | |
244 | ||
bc0e17f6 | 245 | if (lp->link_up) |
42e9a92f RL |
246 | fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; |
247 | else | |
248 | fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; | |
249 | } | |
250 | EXPORT_SYMBOL(fc_get_host_port_state); | |
251 | ||
252 | void fc_get_host_speed(struct Scsi_Host *shost) | |
253 | { | |
254 | struct fc_lport *lport = shost_priv(shost); | |
255 | ||
256 | fc_host_speed(shost) = lport->link_speed; | |
257 | } | |
258 | EXPORT_SYMBOL(fc_get_host_speed); | |
259 | ||
260 | struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost) | |
261 | { | |
42e9a92f RL |
262 | struct fc_host_statistics *fcoe_stats; |
263 | struct fc_lport *lp = shost_priv(shost); | |
264 | struct timespec v0, v1; | |
582b45bc | 265 | unsigned int cpu; |
42e9a92f RL |
266 | |
267 | fcoe_stats = &lp->host_stats; | |
268 | memset(fcoe_stats, 0, sizeof(struct fc_host_statistics)); | |
269 | ||
270 | jiffies_to_timespec(jiffies, &v0); | |
271 | jiffies_to_timespec(lp->boot_time, &v1); | |
272 | fcoe_stats->seconds_since_last_reset = (v0.tv_sec - v1.tv_sec); | |
273 | ||
582b45bc RL |
274 | for_each_possible_cpu(cpu) { |
275 | struct fcoe_dev_stats *stats; | |
276 | ||
277 | stats = per_cpu_ptr(lp->dev_stats, cpu); | |
278 | ||
42e9a92f RL |
279 | fcoe_stats->tx_frames += stats->TxFrames; |
280 | fcoe_stats->tx_words += stats->TxWords; | |
281 | fcoe_stats->rx_frames += stats->RxFrames; | |
282 | fcoe_stats->rx_words += stats->RxWords; | |
283 | fcoe_stats->error_frames += stats->ErrorFrames; | |
284 | fcoe_stats->invalid_crc_count += stats->InvalidCRCCount; | |
285 | fcoe_stats->fcp_input_requests += stats->InputRequests; | |
286 | fcoe_stats->fcp_output_requests += stats->OutputRequests; | |
287 | fcoe_stats->fcp_control_requests += stats->ControlRequests; | |
288 | fcoe_stats->fcp_input_megabytes += stats->InputMegabytes; | |
289 | fcoe_stats->fcp_output_megabytes += stats->OutputMegabytes; | |
290 | fcoe_stats->link_failure_count += stats->LinkFailureCount; | |
291 | } | |
292 | fcoe_stats->lip_count = -1; | |
293 | fcoe_stats->nos_count = -1; | |
294 | fcoe_stats->loss_of_sync_count = -1; | |
295 | fcoe_stats->loss_of_signal_count = -1; | |
296 | fcoe_stats->prim_seq_protocol_err_count = -1; | |
297 | fcoe_stats->dumped_frames = -1; | |
298 | return fcoe_stats; | |
299 | } | |
300 | EXPORT_SYMBOL(fc_get_host_stats); | |
301 | ||
302 | /* | |
303 | * Fill in FLOGI command for request. | |
304 | */ | |
305 | static void | |
306 | fc_lport_flogi_fill(struct fc_lport *lport, struct fc_els_flogi *flogi, | |
307 | unsigned int op) | |
308 | { | |
309 | struct fc_els_csp *sp; | |
310 | struct fc_els_cssp *cp; | |
311 | ||
312 | memset(flogi, 0, sizeof(*flogi)); | |
313 | flogi->fl_cmd = (u8) op; | |
314 | put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn); | |
315 | put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn); | |
316 | sp = &flogi->fl_csp; | |
317 | sp->sp_hi_ver = 0x20; | |
318 | sp->sp_lo_ver = 0x20; | |
319 | sp->sp_bb_cred = htons(10); /* this gets set by gateway */ | |
320 | sp->sp_bb_data = htons((u16) lport->mfs); | |
321 | cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */ | |
322 | cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ); | |
323 | if (op != ELS_FLOGI) { | |
324 | sp->sp_features = htons(FC_SP_FT_CIRO); | |
325 | sp->sp_tot_seq = htons(255); /* seq. we accept */ | |
326 | sp->sp_rel_off = htons(0x1f); | |
327 | sp->sp_e_d_tov = htonl(lport->e_d_tov); | |
328 | ||
329 | cp->cp_rdfs = htons((u16) lport->mfs); | |
330 | cp->cp_con_seq = htons(255); | |
331 | cp->cp_open_seq = 1; | |
332 | } | |
333 | } | |
334 | ||
335 | /* | |
336 | * Add a supported FC-4 type. | |
337 | */ | |
338 | static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type) | |
339 | { | |
340 | __be32 *mp; | |
341 | ||
342 | mp = &lport->fcts.ff_type_map[type / FC_NS_BPW]; | |
343 | *mp = htonl(ntohl(*mp) | 1UL << (type % FC_NS_BPW)); | |
344 | } | |
345 | ||
346 | /** | |
34f42a07 | 347 | * fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report. |
42e9a92f RL |
348 | * @lport: Fibre Channel local port recieving the RLIR |
349 | * @sp: current sequence in the RLIR exchange | |
350 | * @fp: RLIR request frame | |
351 | * | |
352 | * Locking Note: The lport lock is exected to be held before calling | |
353 | * this function. | |
354 | */ | |
355 | static void fc_lport_recv_rlir_req(struct fc_seq *sp, struct fc_frame *fp, | |
356 | struct fc_lport *lport) | |
357 | { | |
7414705e RL |
358 | FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n", |
359 | fc_lport_state(lport)); | |
42e9a92f RL |
360 | |
361 | lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); | |
362 | fc_frame_free(fp); | |
363 | } | |
364 | ||
365 | /** | |
34f42a07 | 366 | * fc_lport_recv_echo_req() - Handle received ECHO request |
42e9a92f RL |
367 | * @lport: Fibre Channel local port recieving the ECHO |
368 | * @sp: current sequence in the ECHO exchange | |
369 | * @fp: ECHO request frame | |
370 | * | |
371 | * Locking Note: The lport lock is exected to be held before calling | |
372 | * this function. | |
373 | */ | |
374 | static void fc_lport_recv_echo_req(struct fc_seq *sp, struct fc_frame *in_fp, | |
375 | struct fc_lport *lport) | |
376 | { | |
377 | struct fc_frame *fp; | |
378 | struct fc_exch *ep = fc_seq_exch(sp); | |
379 | unsigned int len; | |
380 | void *pp; | |
381 | void *dp; | |
382 | u32 f_ctl; | |
383 | ||
7414705e RL |
384 | FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n", |
385 | fc_lport_state(lport)); | |
42e9a92f RL |
386 | |
387 | len = fr_len(in_fp) - sizeof(struct fc_frame_header); | |
388 | pp = fc_frame_payload_get(in_fp, len); | |
389 | ||
390 | if (len < sizeof(__be32)) | |
391 | len = sizeof(__be32); | |
392 | ||
393 | fp = fc_frame_alloc(lport, len); | |
394 | if (fp) { | |
395 | dp = fc_frame_payload_get(fp, len); | |
396 | memcpy(dp, pp, len); | |
397 | *((u32 *)dp) = htonl(ELS_LS_ACC << 24); | |
398 | sp = lport->tt.seq_start_next(sp); | |
399 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; | |
400 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
401 | FC_TYPE_ELS, f_ctl, 0); | |
402 | lport->tt.seq_send(lport, sp, fp); | |
403 | } | |
404 | fc_frame_free(in_fp); | |
405 | } | |
406 | ||
407 | /** | |
34f42a07 | 408 | * fc_lport_recv_echo_req() - Handle received Request Node ID data request |
42e9a92f RL |
409 | * @lport: Fibre Channel local port recieving the RNID |
410 | * @sp: current sequence in the RNID exchange | |
411 | * @fp: RNID request frame | |
412 | * | |
413 | * Locking Note: The lport lock is exected to be held before calling | |
414 | * this function. | |
415 | */ | |
416 | static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp, | |
417 | struct fc_lport *lport) | |
418 | { | |
419 | struct fc_frame *fp; | |
420 | struct fc_exch *ep = fc_seq_exch(sp); | |
421 | struct fc_els_rnid *req; | |
422 | struct { | |
423 | struct fc_els_rnid_resp rnid; | |
424 | struct fc_els_rnid_cid cid; | |
425 | struct fc_els_rnid_gen gen; | |
426 | } *rp; | |
427 | struct fc_seq_els_data rjt_data; | |
428 | u8 fmt; | |
429 | size_t len; | |
430 | u32 f_ctl; | |
431 | ||
7414705e RL |
432 | FC_LPORT_DBG(lport, "Received RNID request while in state %s\n", |
433 | fc_lport_state(lport)); | |
42e9a92f RL |
434 | |
435 | req = fc_frame_payload_get(in_fp, sizeof(*req)); | |
436 | if (!req) { | |
437 | rjt_data.fp = NULL; | |
438 | rjt_data.reason = ELS_RJT_LOGIC; | |
439 | rjt_data.explan = ELS_EXPL_NONE; | |
440 | lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); | |
441 | } else { | |
442 | fmt = req->rnid_fmt; | |
443 | len = sizeof(*rp); | |
444 | if (fmt != ELS_RNIDF_GEN || | |
445 | ntohl(lport->rnid_gen.rnid_atype) == 0) { | |
446 | fmt = ELS_RNIDF_NONE; /* nothing to provide */ | |
447 | len -= sizeof(rp->gen); | |
448 | } | |
449 | fp = fc_frame_alloc(lport, len); | |
450 | if (fp) { | |
451 | rp = fc_frame_payload_get(fp, len); | |
452 | memset(rp, 0, len); | |
453 | rp->rnid.rnid_cmd = ELS_LS_ACC; | |
454 | rp->rnid.rnid_fmt = fmt; | |
455 | rp->rnid.rnid_cid_len = sizeof(rp->cid); | |
456 | rp->cid.rnid_wwpn = htonll(lport->wwpn); | |
457 | rp->cid.rnid_wwnn = htonll(lport->wwnn); | |
458 | if (fmt == ELS_RNIDF_GEN) { | |
459 | rp->rnid.rnid_sid_len = sizeof(rp->gen); | |
460 | memcpy(&rp->gen, &lport->rnid_gen, | |
461 | sizeof(rp->gen)); | |
462 | } | |
463 | sp = lport->tt.seq_start_next(sp); | |
464 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; | |
465 | f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; | |
466 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
467 | FC_TYPE_ELS, f_ctl, 0); | |
468 | lport->tt.seq_send(lport, sp, fp); | |
469 | } | |
470 | } | |
471 | fc_frame_free(in_fp); | |
472 | } | |
473 | ||
474 | /** | |
34f42a07 | 475 | * fc_lport_recv_adisc_req() - Handle received Address Discovery Request |
42e9a92f RL |
476 | * @lport: Fibre Channel local port recieving the ADISC |
477 | * @sp: current sequence in the ADISC exchange | |
478 | * @fp: ADISC request frame | |
479 | * | |
480 | * Locking Note: The lport lock is expected to be held before calling | |
481 | * this function. | |
482 | */ | |
483 | static void fc_lport_recv_adisc_req(struct fc_seq *sp, struct fc_frame *in_fp, | |
484 | struct fc_lport *lport) | |
485 | { | |
486 | struct fc_frame *fp; | |
487 | struct fc_exch *ep = fc_seq_exch(sp); | |
488 | struct fc_els_adisc *req, *rp; | |
489 | struct fc_seq_els_data rjt_data; | |
490 | size_t len; | |
491 | u32 f_ctl; | |
492 | ||
7414705e RL |
493 | FC_LPORT_DBG(lport, "Received ADISC request while in state %s\n", |
494 | fc_lport_state(lport)); | |
42e9a92f RL |
495 | |
496 | req = fc_frame_payload_get(in_fp, sizeof(*req)); | |
497 | if (!req) { | |
498 | rjt_data.fp = NULL; | |
499 | rjt_data.reason = ELS_RJT_LOGIC; | |
500 | rjt_data.explan = ELS_EXPL_NONE; | |
501 | lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); | |
502 | } else { | |
503 | len = sizeof(*rp); | |
504 | fp = fc_frame_alloc(lport, len); | |
505 | if (fp) { | |
506 | rp = fc_frame_payload_get(fp, len); | |
507 | memset(rp, 0, len); | |
508 | rp->adisc_cmd = ELS_LS_ACC; | |
509 | rp->adisc_wwpn = htonll(lport->wwpn); | |
510 | rp->adisc_wwnn = htonll(lport->wwnn); | |
511 | hton24(rp->adisc_port_id, | |
512 | fc_host_port_id(lport->host)); | |
513 | sp = lport->tt.seq_start_next(sp); | |
514 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; | |
515 | f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; | |
516 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
517 | FC_TYPE_ELS, f_ctl, 0); | |
518 | lport->tt.seq_send(lport, sp, fp); | |
519 | } | |
520 | } | |
521 | fc_frame_free(in_fp); | |
522 | } | |
523 | ||
524 | /** | |
34f42a07 | 525 | * fc_lport_recv_logo_req() - Handle received fabric LOGO request |
42e9a92f RL |
526 | * @lport: Fibre Channel local port recieving the LOGO |
527 | * @sp: current sequence in the LOGO exchange | |
528 | * @fp: LOGO request frame | |
529 | * | |
530 | * Locking Note: The lport lock is exected to be held before calling | |
531 | * this function. | |
532 | */ | |
533 | static void fc_lport_recv_logo_req(struct fc_seq *sp, struct fc_frame *fp, | |
534 | struct fc_lport *lport) | |
535 | { | |
536 | lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); | |
537 | fc_lport_enter_reset(lport); | |
538 | fc_frame_free(fp); | |
539 | } | |
540 | ||
541 | /** | |
34f42a07 | 542 | * fc_fabric_login() - Start the lport state machine |
42e9a92f RL |
543 | * @lport: The lport that should log into the fabric |
544 | * | |
545 | * Locking Note: This function should not be called | |
546 | * with the lport lock held. | |
547 | */ | |
548 | int fc_fabric_login(struct fc_lport *lport) | |
549 | { | |
550 | int rc = -1; | |
551 | ||
552 | mutex_lock(&lport->lp_mutex); | |
b1d9fd55 | 553 | if (lport->state == LPORT_ST_DISABLED) { |
42e9a92f RL |
554 | fc_lport_enter_reset(lport); |
555 | rc = 0; | |
556 | } | |
557 | mutex_unlock(&lport->lp_mutex); | |
558 | ||
559 | return rc; | |
560 | } | |
561 | EXPORT_SYMBOL(fc_fabric_login); | |
562 | ||
563 | /** | |
34f42a07 | 564 | * fc_linkup() - Handler for transport linkup events |
42e9a92f RL |
565 | * @lport: The lport whose link is up |
566 | */ | |
567 | void fc_linkup(struct fc_lport *lport) | |
568 | { | |
7414705e RL |
569 | printk(KERN_INFO "libfc: Link up on port (%6x)\n", |
570 | fc_host_port_id(lport->host)); | |
42e9a92f RL |
571 | |
572 | mutex_lock(&lport->lp_mutex); | |
bc0e17f6 VD |
573 | if (!lport->link_up) { |
574 | lport->link_up = 1; | |
42e9a92f RL |
575 | |
576 | if (lport->state == LPORT_ST_RESET) | |
577 | fc_lport_enter_flogi(lport); | |
578 | } | |
579 | mutex_unlock(&lport->lp_mutex); | |
580 | } | |
581 | EXPORT_SYMBOL(fc_linkup); | |
582 | ||
583 | /** | |
34f42a07 | 584 | * fc_linkdown() - Handler for transport linkdown events |
42e9a92f RL |
585 | * @lport: The lport whose link is down |
586 | */ | |
587 | void fc_linkdown(struct fc_lport *lport) | |
588 | { | |
589 | mutex_lock(&lport->lp_mutex); | |
7414705e RL |
590 | printk(KERN_INFO "libfc: Link down on port (%6x)\n", |
591 | fc_host_port_id(lport->host)); | |
42e9a92f | 592 | |
bc0e17f6 VD |
593 | if (lport->link_up) { |
594 | lport->link_up = 0; | |
42e9a92f RL |
595 | fc_lport_enter_reset(lport); |
596 | lport->tt.fcp_cleanup(lport); | |
597 | } | |
598 | mutex_unlock(&lport->lp_mutex); | |
599 | } | |
600 | EXPORT_SYMBOL(fc_linkdown); | |
601 | ||
42e9a92f | 602 | /** |
34f42a07 | 603 | * fc_fabric_logoff() - Logout of the fabric |
42e9a92f RL |
604 | * @lport: fc_lport pointer to logoff the fabric |
605 | * | |
606 | * Return value: | |
607 | * 0 for success, -1 for failure | |
34f42a07 | 608 | */ |
42e9a92f RL |
609 | int fc_fabric_logoff(struct fc_lport *lport) |
610 | { | |
611 | lport->tt.disc_stop_final(lport); | |
612 | mutex_lock(&lport->lp_mutex); | |
a0fd2e49 AJ |
613 | if (lport->dns_rp) |
614 | lport->tt.rport_logoff(lport->dns_rp); | |
615 | mutex_unlock(&lport->lp_mutex); | |
616 | lport->tt.rport_flush_queue(); | |
617 | mutex_lock(&lport->lp_mutex); | |
42e9a92f RL |
618 | fc_lport_enter_logo(lport); |
619 | mutex_unlock(&lport->lp_mutex); | |
f7db2c15 | 620 | cancel_delayed_work_sync(&lport->retry_work); |
42e9a92f RL |
621 | return 0; |
622 | } | |
623 | EXPORT_SYMBOL(fc_fabric_logoff); | |
624 | ||
625 | /** | |
34f42a07 | 626 | * fc_lport_destroy() - unregister a fc_lport |
42e9a92f RL |
627 | * @lport: fc_lport pointer to unregister |
628 | * | |
629 | * Return value: | |
630 | * None | |
631 | * Note: | |
632 | * exit routine for fc_lport instance | |
633 | * clean-up all the allocated memory | |
634 | * and free up other system resources. | |
635 | * | |
34f42a07 | 636 | */ |
42e9a92f RL |
637 | int fc_lport_destroy(struct fc_lport *lport) |
638 | { | |
bbf15669 | 639 | mutex_lock(&lport->lp_mutex); |
b1d9fd55 | 640 | lport->state = LPORT_ST_DISABLED; |
bbf15669 | 641 | lport->link_up = 0; |
42e9a92f | 642 | lport->tt.frame_send = fc_frame_drop; |
bbf15669 AJ |
643 | mutex_unlock(&lport->lp_mutex); |
644 | ||
42e9a92f | 645 | lport->tt.fcp_abort_io(lport); |
1f6ff364 | 646 | lport->tt.exch_mgr_reset(lport, 0, 0); |
42e9a92f RL |
647 | return 0; |
648 | } | |
649 | EXPORT_SYMBOL(fc_lport_destroy); | |
650 | ||
651 | /** | |
34f42a07 | 652 | * fc_set_mfs() - sets up the mfs for the corresponding fc_lport |
42e9a92f RL |
653 | * @lport: fc_lport pointer to unregister |
654 | * @mfs: the new mfs for fc_lport | |
655 | * | |
656 | * Set mfs for the given fc_lport to the new mfs. | |
657 | * | |
658 | * Return: 0 for success | |
34f42a07 | 659 | */ |
42e9a92f RL |
660 | int fc_set_mfs(struct fc_lport *lport, u32 mfs) |
661 | { | |
662 | unsigned int old_mfs; | |
663 | int rc = -EINVAL; | |
664 | ||
665 | mutex_lock(&lport->lp_mutex); | |
666 | ||
667 | old_mfs = lport->mfs; | |
668 | ||
669 | if (mfs >= FC_MIN_MAX_FRAME) { | |
670 | mfs &= ~3; | |
671 | if (mfs > FC_MAX_FRAME) | |
672 | mfs = FC_MAX_FRAME; | |
673 | mfs -= sizeof(struct fc_frame_header); | |
674 | lport->mfs = mfs; | |
675 | rc = 0; | |
676 | } | |
677 | ||
678 | if (!rc && mfs < old_mfs) | |
679 | fc_lport_enter_reset(lport); | |
680 | ||
681 | mutex_unlock(&lport->lp_mutex); | |
682 | ||
683 | return rc; | |
684 | } | |
685 | EXPORT_SYMBOL(fc_set_mfs); | |
686 | ||
687 | /** | |
34f42a07 | 688 | * fc_lport_disc_callback() - Callback for discovery events |
42e9a92f RL |
689 | * @lport: FC local port |
690 | * @event: The discovery event | |
691 | */ | |
692 | void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event) | |
693 | { | |
694 | switch (event) { | |
695 | case DISC_EV_SUCCESS: | |
7414705e | 696 | FC_LPORT_DBG(lport, "Discovery succeeded\n"); |
42e9a92f RL |
697 | break; |
698 | case DISC_EV_FAILED: | |
7414705e RL |
699 | printk(KERN_ERR "libfc: Discovery failed for port (%6x)\n", |
700 | fc_host_port_id(lport->host)); | |
42e9a92f RL |
701 | mutex_lock(&lport->lp_mutex); |
702 | fc_lport_enter_reset(lport); | |
703 | mutex_unlock(&lport->lp_mutex); | |
704 | break; | |
705 | case DISC_EV_NONE: | |
706 | WARN_ON(1); | |
707 | break; | |
708 | } | |
709 | } | |
710 | ||
711 | /** | |
34f42a07 | 712 | * fc_rport_enter_ready() - Enter the ready state and start discovery |
42e9a92f RL |
713 | * @lport: Fibre Channel local port that is ready |
714 | * | |
715 | * Locking Note: The lport lock is expected to be held before calling | |
716 | * this routine. | |
717 | */ | |
718 | static void fc_lport_enter_ready(struct fc_lport *lport) | |
719 | { | |
7414705e RL |
720 | FC_LPORT_DBG(lport, "Entered READY from state %s\n", |
721 | fc_lport_state(lport)); | |
42e9a92f RL |
722 | |
723 | fc_lport_state_enter(lport, LPORT_ST_READY); | |
724 | ||
725 | lport->tt.disc_start(fc_lport_disc_callback, lport); | |
726 | } | |
727 | ||
728 | /** | |
34f42a07 | 729 | * fc_lport_recv_flogi_req() - Receive a FLOGI request |
42e9a92f RL |
730 | * @sp_in: The sequence the FLOGI is on |
731 | * @rx_fp: The frame the FLOGI is in | |
732 | * @lport: The lport that recieved the request | |
733 | * | |
734 | * A received FLOGI request indicates a point-to-point connection. | |
735 | * Accept it with the common service parameters indicating our N port. | |
736 | * Set up to do a PLOGI if we have the higher-number WWPN. | |
737 | * | |
738 | * Locking Note: The lport lock is exected to be held before calling | |
739 | * this function. | |
740 | */ | |
741 | static void fc_lport_recv_flogi_req(struct fc_seq *sp_in, | |
742 | struct fc_frame *rx_fp, | |
743 | struct fc_lport *lport) | |
744 | { | |
745 | struct fc_frame *fp; | |
746 | struct fc_frame_header *fh; | |
747 | struct fc_seq *sp; | |
748 | struct fc_exch *ep; | |
749 | struct fc_els_flogi *flp; | |
750 | struct fc_els_flogi *new_flp; | |
751 | u64 remote_wwpn; | |
752 | u32 remote_fid; | |
753 | u32 local_fid; | |
754 | u32 f_ctl; | |
755 | ||
7414705e RL |
756 | FC_LPORT_DBG(lport, "Received FLOGI request while in state %s\n", |
757 | fc_lport_state(lport)); | |
42e9a92f RL |
758 | |
759 | fh = fc_frame_header_get(rx_fp); | |
760 | remote_fid = ntoh24(fh->fh_s_id); | |
761 | flp = fc_frame_payload_get(rx_fp, sizeof(*flp)); | |
762 | if (!flp) | |
763 | goto out; | |
764 | remote_wwpn = get_unaligned_be64(&flp->fl_wwpn); | |
765 | if (remote_wwpn == lport->wwpn) { | |
7414705e RL |
766 | printk(KERN_WARNING "libfc: Received FLOGI from port " |
767 | "with same WWPN %llx\n", remote_wwpn); | |
42e9a92f RL |
768 | goto out; |
769 | } | |
7414705e | 770 | FC_LPORT_DBG(lport, "FLOGI from port WWPN %llx\n", 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 { | |
7414705e RL |
902 | FC_LPORT_DBG(lport, "dropping invalid frame (eof %x)\n", |
903 | fr_eof(fp)); | |
42e9a92f RL |
904 | fc_frame_free(fp); |
905 | } | |
906 | mutex_unlock(&lport->lp_mutex); | |
907 | ||
908 | /* | |
909 | * The common exch_done for all request may not be good | |
910 | * if any request requires longer hold on exhange. XXX | |
911 | */ | |
912 | lport->tt.exch_done(sp); | |
913 | } | |
914 | ||
915 | /** | |
34f42a07 | 916 | * fc_lport_reset() - Reset an lport |
42e9a92f RL |
917 | * @lport: The lport which should be reset |
918 | * | |
919 | * Locking Note: This functions should not be called with the | |
920 | * lport lock held. | |
921 | */ | |
922 | int fc_lport_reset(struct fc_lport *lport) | |
923 | { | |
f7db2c15 | 924 | cancel_delayed_work_sync(&lport->retry_work); |
42e9a92f RL |
925 | mutex_lock(&lport->lp_mutex); |
926 | fc_lport_enter_reset(lport); | |
927 | mutex_unlock(&lport->lp_mutex); | |
928 | return 0; | |
929 | } | |
930 | EXPORT_SYMBOL(fc_lport_reset); | |
931 | ||
932 | /** | |
34f42a07 | 933 | * fc_rport_enter_reset() - Reset the local port |
42e9a92f RL |
934 | * @lport: Fibre Channel local port to be reset |
935 | * | |
936 | * Locking Note: The lport lock is expected to be held before calling | |
937 | * this routine. | |
938 | */ | |
939 | static void fc_lport_enter_reset(struct fc_lport *lport) | |
940 | { | |
7414705e RL |
941 | FC_LPORT_DBG(lport, "Entered RESET state from %s state\n", |
942 | fc_lport_state(lport)); | |
42e9a92f RL |
943 | |
944 | fc_lport_state_enter(lport, LPORT_ST_RESET); | |
945 | ||
946 | if (lport->dns_rp) | |
947 | lport->tt.rport_logoff(lport->dns_rp); | |
948 | ||
949 | if (lport->ptp_rp) { | |
950 | lport->tt.rport_logoff(lport->ptp_rp); | |
951 | lport->ptp_rp = NULL; | |
952 | } | |
953 | ||
954 | lport->tt.disc_stop(lport); | |
955 | ||
1f6ff364 | 956 | lport->tt.exch_mgr_reset(lport, 0, 0); |
42e9a92f RL |
957 | fc_host_fabric_name(lport->host) = 0; |
958 | fc_host_port_id(lport->host) = 0; | |
959 | ||
bc0e17f6 | 960 | if (lport->link_up) |
42e9a92f RL |
961 | fc_lport_enter_flogi(lport); |
962 | } | |
963 | ||
964 | /** | |
34f42a07 | 965 | * fc_lport_error() - Handler for any errors |
42e9a92f RL |
966 | * @lport: The fc_lport object |
967 | * @fp: The frame pointer | |
968 | * | |
969 | * If the error was caused by a resource allocation failure | |
970 | * then wait for half a second and retry, otherwise retry | |
971 | * after the e_d_tov time. | |
972 | */ | |
973 | static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp) | |
974 | { | |
975 | unsigned long delay = 0; | |
7414705e RL |
976 | FC_LPORT_DBG(lport, "Error %ld in state %s, retries %d\n", |
977 | PTR_ERR(fp), fc_lport_state(lport), | |
978 | lport->retry_count); | |
42e9a92f RL |
979 | |
980 | if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) { | |
981 | /* | |
982 | * Memory allocation failure, or the exchange timed out. | |
983 | * Retry after delay | |
984 | */ | |
985 | if (lport->retry_count < lport->max_retry_count) { | |
986 | lport->retry_count++; | |
987 | if (!fp) | |
988 | delay = msecs_to_jiffies(500); | |
989 | else | |
990 | delay = msecs_to_jiffies(lport->e_d_tov); | |
991 | ||
992 | schedule_delayed_work(&lport->retry_work, delay); | |
993 | } else { | |
994 | switch (lport->state) { | |
b1d9fd55 | 995 | case LPORT_ST_DISABLED: |
42e9a92f RL |
996 | case LPORT_ST_READY: |
997 | case LPORT_ST_RESET: | |
998 | case LPORT_ST_RPN_ID: | |
999 | case LPORT_ST_RFT_ID: | |
1000 | case LPORT_ST_SCR: | |
1001 | case LPORT_ST_DNS: | |
1002 | case LPORT_ST_FLOGI: | |
1003 | case LPORT_ST_LOGO: | |
1004 | fc_lport_enter_reset(lport); | |
1005 | break; | |
1006 | } | |
1007 | } | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | /** | |
34f42a07 RL |
1012 | * fc_lport_rft_id_resp() - Handle response to Register Fibre |
1013 | * Channel Types by ID (RPN_ID) request | |
42e9a92f RL |
1014 | * @sp: current sequence in RPN_ID exchange |
1015 | * @fp: response frame | |
1016 | * @lp_arg: Fibre Channel host port instance | |
1017 | * | |
1018 | * Locking Note: This function will be called without the lport lock | |
1019 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1020 | * and then unlock the lport. | |
1021 | */ | |
1022 | static void fc_lport_rft_id_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1023 | void *lp_arg) | |
1024 | { | |
1025 | struct fc_lport *lport = lp_arg; | |
1026 | struct fc_frame_header *fh; | |
1027 | struct fc_ct_hdr *ct; | |
1028 | ||
1029 | if (fp == ERR_PTR(-FC_EX_CLOSED)) | |
1030 | return; | |
1031 | ||
1032 | mutex_lock(&lport->lp_mutex); | |
1033 | ||
7414705e | 1034 | FC_LPORT_DBG(lport, "Received a RFT_ID response\n"); |
42e9a92f RL |
1035 | |
1036 | if (lport->state != LPORT_ST_RFT_ID) { | |
7414705e RL |
1037 | FC_LPORT_DBG(lport, "Received a RFT_ID response, but in state " |
1038 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1039 | if (IS_ERR(fp)) |
1040 | goto err; | |
42e9a92f RL |
1041 | goto out; |
1042 | } | |
1043 | ||
76f6804e AJ |
1044 | if (IS_ERR(fp)) { |
1045 | fc_lport_error(lport, fp); | |
1046 | goto err; | |
1047 | } | |
1048 | ||
42e9a92f RL |
1049 | fh = fc_frame_header_get(fp); |
1050 | ct = fc_frame_payload_get(fp, sizeof(*ct)); | |
1051 | ||
1052 | if (fh && ct && fh->fh_type == FC_TYPE_CT && | |
1053 | ct->ct_fs_type == FC_FST_DIR && | |
1054 | ct->ct_fs_subtype == FC_NS_SUBTYPE && | |
1055 | ntohs(ct->ct_cmd) == FC_FS_ACC) | |
1056 | fc_lport_enter_scr(lport); | |
1057 | else | |
1058 | fc_lport_error(lport, fp); | |
1059 | out: | |
1060 | fc_frame_free(fp); | |
1061 | err: | |
1062 | mutex_unlock(&lport->lp_mutex); | |
1063 | } | |
1064 | ||
1065 | /** | |
34f42a07 RL |
1066 | * fc_lport_rpn_id_resp() - Handle response to Register Port |
1067 | * Name by ID (RPN_ID) request | |
42e9a92f RL |
1068 | * @sp: current sequence in RPN_ID exchange |
1069 | * @fp: response frame | |
1070 | * @lp_arg: Fibre Channel host port instance | |
1071 | * | |
1072 | * Locking Note: This function will be called without the lport lock | |
1073 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1074 | * and then unlock the lport. | |
1075 | */ | |
1076 | static void fc_lport_rpn_id_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1077 | void *lp_arg) | |
1078 | { | |
1079 | struct fc_lport *lport = lp_arg; | |
1080 | struct fc_frame_header *fh; | |
1081 | struct fc_ct_hdr *ct; | |
1082 | ||
1083 | if (fp == ERR_PTR(-FC_EX_CLOSED)) | |
1084 | return; | |
1085 | ||
1086 | mutex_lock(&lport->lp_mutex); | |
1087 | ||
7414705e | 1088 | FC_LPORT_DBG(lport, "Received a RPN_ID response\n"); |
42e9a92f RL |
1089 | |
1090 | if (lport->state != LPORT_ST_RPN_ID) { | |
7414705e RL |
1091 | FC_LPORT_DBG(lport, "Received a RPN_ID response, but in state " |
1092 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1093 | if (IS_ERR(fp)) |
1094 | goto err; | |
42e9a92f RL |
1095 | goto out; |
1096 | } | |
1097 | ||
76f6804e AJ |
1098 | if (IS_ERR(fp)) { |
1099 | fc_lport_error(lport, fp); | |
1100 | goto err; | |
1101 | } | |
1102 | ||
42e9a92f RL |
1103 | fh = fc_frame_header_get(fp); |
1104 | ct = fc_frame_payload_get(fp, sizeof(*ct)); | |
1105 | if (fh && ct && fh->fh_type == FC_TYPE_CT && | |
1106 | ct->ct_fs_type == FC_FST_DIR && | |
1107 | ct->ct_fs_subtype == FC_NS_SUBTYPE && | |
1108 | ntohs(ct->ct_cmd) == FC_FS_ACC) | |
1109 | fc_lport_enter_rft_id(lport); | |
1110 | else | |
1111 | fc_lport_error(lport, fp); | |
1112 | ||
1113 | out: | |
1114 | fc_frame_free(fp); | |
1115 | err: | |
1116 | mutex_unlock(&lport->lp_mutex); | |
1117 | } | |
1118 | ||
1119 | /** | |
34f42a07 | 1120 | * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request |
42e9a92f RL |
1121 | * @sp: current sequence in SCR exchange |
1122 | * @fp: response frame | |
1123 | * @lp_arg: Fibre Channel lport port instance that sent the registration request | |
1124 | * | |
1125 | * Locking Note: This function will be called without the lport lock | |
1126 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1127 | * and then unlock the lport. | |
1128 | */ | |
1129 | static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1130 | void *lp_arg) | |
1131 | { | |
1132 | struct fc_lport *lport = lp_arg; | |
1133 | u8 op; | |
1134 | ||
1135 | if (fp == ERR_PTR(-FC_EX_CLOSED)) | |
1136 | return; | |
1137 | ||
1138 | mutex_lock(&lport->lp_mutex); | |
1139 | ||
7414705e | 1140 | FC_LPORT_DBG(lport, "Received a SCR response\n"); |
42e9a92f RL |
1141 | |
1142 | if (lport->state != LPORT_ST_SCR) { | |
7414705e RL |
1143 | FC_LPORT_DBG(lport, "Received a SCR response, but in state " |
1144 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1145 | if (IS_ERR(fp)) |
1146 | goto err; | |
42e9a92f RL |
1147 | goto out; |
1148 | } | |
1149 | ||
76f6804e AJ |
1150 | if (IS_ERR(fp)) { |
1151 | fc_lport_error(lport, fp); | |
1152 | goto err; | |
1153 | } | |
1154 | ||
42e9a92f RL |
1155 | op = fc_frame_payload_op(fp); |
1156 | if (op == ELS_LS_ACC) | |
1157 | fc_lport_enter_ready(lport); | |
1158 | else | |
1159 | fc_lport_error(lport, fp); | |
1160 | ||
1161 | out: | |
1162 | fc_frame_free(fp); | |
1163 | err: | |
1164 | mutex_unlock(&lport->lp_mutex); | |
1165 | } | |
1166 | ||
1167 | /** | |
34f42a07 | 1168 | * fc_lport_enter_scr() - Send a State Change Register (SCR) request |
42e9a92f RL |
1169 | * @lport: Fibre Channel local port to register for state changes |
1170 | * | |
1171 | * Locking Note: The lport lock is expected to be held before calling | |
1172 | * this routine. | |
1173 | */ | |
1174 | static void fc_lport_enter_scr(struct fc_lport *lport) | |
1175 | { | |
1176 | struct fc_frame *fp; | |
1177 | ||
7414705e RL |
1178 | FC_LPORT_DBG(lport, "Entered SCR state from %s state\n", |
1179 | fc_lport_state(lport)); | |
42e9a92f RL |
1180 | |
1181 | fc_lport_state_enter(lport, LPORT_ST_SCR); | |
1182 | ||
1183 | fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr)); | |
1184 | if (!fp) { | |
1185 | fc_lport_error(lport, fp); | |
1186 | return; | |
1187 | } | |
1188 | ||
1189 | if (!lport->tt.elsct_send(lport, NULL, fp, ELS_SCR, | |
1190 | fc_lport_scr_resp, lport, lport->e_d_tov)) | |
1191 | fc_lport_error(lport, fp); | |
1192 | } | |
1193 | ||
1194 | /** | |
34f42a07 | 1195 | * fc_lport_enter_rft_id() - Register FC4-types with the name server |
42e9a92f RL |
1196 | * @lport: Fibre Channel local port to register |
1197 | * | |
1198 | * Locking Note: The lport lock is expected to be held before calling | |
1199 | * this routine. | |
1200 | */ | |
1201 | static void fc_lport_enter_rft_id(struct fc_lport *lport) | |
1202 | { | |
1203 | struct fc_frame *fp; | |
1204 | struct fc_ns_fts *lps; | |
1205 | int i; | |
1206 | ||
7414705e RL |
1207 | FC_LPORT_DBG(lport, "Entered RFT_ID state from %s state\n", |
1208 | fc_lport_state(lport)); | |
42e9a92f RL |
1209 | |
1210 | fc_lport_state_enter(lport, LPORT_ST_RFT_ID); | |
1211 | ||
1212 | lps = &lport->fcts; | |
1213 | i = sizeof(lps->ff_type_map) / sizeof(lps->ff_type_map[0]); | |
1214 | while (--i >= 0) | |
1215 | if (ntohl(lps->ff_type_map[i]) != 0) | |
1216 | break; | |
1217 | if (i < 0) { | |
1218 | /* nothing to register, move on to SCR */ | |
1219 | fc_lport_enter_scr(lport); | |
1220 | return; | |
1221 | } | |
1222 | ||
1223 | fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + | |
1224 | sizeof(struct fc_ns_rft)); | |
1225 | if (!fp) { | |
1226 | fc_lport_error(lport, fp); | |
1227 | return; | |
1228 | } | |
1229 | ||
1230 | if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RFT_ID, | |
1231 | fc_lport_rft_id_resp, | |
1232 | lport, lport->e_d_tov)) | |
1233 | fc_lport_error(lport, fp); | |
1234 | } | |
1235 | ||
1236 | /** | |
34f42a07 | 1237 | * fc_rport_enter_rft_id() - Register port name with the name server |
42e9a92f RL |
1238 | * @lport: Fibre Channel local port to register |
1239 | * | |
1240 | * Locking Note: The lport lock is expected to be held before calling | |
1241 | * this routine. | |
1242 | */ | |
1243 | static void fc_lport_enter_rpn_id(struct fc_lport *lport) | |
1244 | { | |
1245 | struct fc_frame *fp; | |
1246 | ||
7414705e RL |
1247 | FC_LPORT_DBG(lport, "Entered RPN_ID state from %s state\n", |
1248 | fc_lport_state(lport)); | |
42e9a92f RL |
1249 | |
1250 | fc_lport_state_enter(lport, LPORT_ST_RPN_ID); | |
1251 | ||
1252 | fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + | |
1253 | sizeof(struct fc_ns_rn_id)); | |
1254 | if (!fp) { | |
1255 | fc_lport_error(lport, fp); | |
1256 | return; | |
1257 | } | |
1258 | ||
1259 | if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RPN_ID, | |
1260 | fc_lport_rpn_id_resp, | |
1261 | lport, lport->e_d_tov)) | |
1262 | fc_lport_error(lport, fp); | |
1263 | } | |
1264 | ||
1265 | static struct fc_rport_operations fc_lport_rport_ops = { | |
1266 | .event_callback = fc_lport_rport_callback, | |
1267 | }; | |
1268 | ||
1269 | /** | |
34f42a07 | 1270 | * fc_rport_enter_dns() - Create a rport to the name server |
42e9a92f RL |
1271 | * @lport: Fibre Channel local port requesting a rport for the name server |
1272 | * | |
1273 | * Locking Note: The lport lock is expected to be held before calling | |
1274 | * this routine. | |
1275 | */ | |
1276 | static void fc_lport_enter_dns(struct fc_lport *lport) | |
1277 | { | |
1278 | struct fc_rport *rport; | |
1279 | struct fc_rport_libfc_priv *rdata; | |
1280 | struct fc_disc_port dp; | |
1281 | ||
1282 | dp.ids.port_id = FC_FID_DIR_SERV; | |
1283 | dp.ids.port_name = -1; | |
1284 | dp.ids.node_name = -1; | |
1285 | dp.ids.roles = FC_RPORT_ROLE_UNKNOWN; | |
1286 | dp.lp = lport; | |
1287 | ||
7414705e RL |
1288 | FC_LPORT_DBG(lport, "Entered DNS state from %s state\n", |
1289 | fc_lport_state(lport)); | |
42e9a92f RL |
1290 | |
1291 | fc_lport_state_enter(lport, LPORT_ST_DNS); | |
1292 | ||
5101ff99 | 1293 | rport = lport->tt.rport_create(&dp); |
42e9a92f RL |
1294 | if (!rport) |
1295 | goto err; | |
1296 | ||
1297 | rdata = rport->dd_data; | |
1298 | rdata->ops = &fc_lport_rport_ops; | |
1299 | lport->tt.rport_login(rport); | |
1300 | return; | |
1301 | ||
1302 | err: | |
1303 | fc_lport_error(lport, NULL); | |
1304 | } | |
1305 | ||
1306 | /** | |
34f42a07 | 1307 | * fc_lport_timeout() - Handler for the retry_work timer. |
42e9a92f RL |
1308 | * @work: The work struct of the fc_lport |
1309 | */ | |
1310 | static void fc_lport_timeout(struct work_struct *work) | |
1311 | { | |
1312 | struct fc_lport *lport = | |
1313 | container_of(work, struct fc_lport, | |
1314 | retry_work.work); | |
1315 | ||
1316 | mutex_lock(&lport->lp_mutex); | |
1317 | ||
1318 | switch (lport->state) { | |
b1d9fd55 | 1319 | case LPORT_ST_DISABLED: |
42e9a92f RL |
1320 | case LPORT_ST_READY: |
1321 | case LPORT_ST_RESET: | |
1322 | WARN_ON(1); | |
1323 | break; | |
1324 | case LPORT_ST_FLOGI: | |
1325 | fc_lport_enter_flogi(lport); | |
1326 | break; | |
1327 | case LPORT_ST_DNS: | |
1328 | fc_lport_enter_dns(lport); | |
1329 | break; | |
1330 | case LPORT_ST_RPN_ID: | |
1331 | fc_lport_enter_rpn_id(lport); | |
1332 | break; | |
1333 | case LPORT_ST_RFT_ID: | |
1334 | fc_lport_enter_rft_id(lport); | |
1335 | break; | |
1336 | case LPORT_ST_SCR: | |
1337 | fc_lport_enter_scr(lport); | |
1338 | break; | |
1339 | case LPORT_ST_LOGO: | |
1340 | fc_lport_enter_logo(lport); | |
1341 | break; | |
1342 | } | |
1343 | ||
1344 | mutex_unlock(&lport->lp_mutex); | |
1345 | } | |
1346 | ||
1347 | /** | |
34f42a07 | 1348 | * fc_lport_logo_resp() - Handle response to LOGO request |
42e9a92f RL |
1349 | * @sp: current sequence in LOGO exchange |
1350 | * @fp: response frame | |
1351 | * @lp_arg: Fibre Channel lport port instance that sent the LOGO request | |
1352 | * | |
1353 | * Locking Note: This function will be called without the lport lock | |
1354 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1355 | * and then unlock the lport. | |
1356 | */ | |
1357 | static void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1358 | void *lp_arg) | |
1359 | { | |
1360 | struct fc_lport *lport = lp_arg; | |
1361 | u8 op; | |
1362 | ||
1363 | if (fp == ERR_PTR(-FC_EX_CLOSED)) | |
1364 | return; | |
1365 | ||
1366 | mutex_lock(&lport->lp_mutex); | |
1367 | ||
7414705e | 1368 | FC_LPORT_DBG(lport, "Received a LOGO response\n"); |
42e9a92f RL |
1369 | |
1370 | if (lport->state != LPORT_ST_LOGO) { | |
7414705e RL |
1371 | FC_LPORT_DBG(lport, "Received a LOGO response, but in state " |
1372 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1373 | if (IS_ERR(fp)) |
1374 | goto err; | |
42e9a92f RL |
1375 | goto out; |
1376 | } | |
1377 | ||
76f6804e AJ |
1378 | if (IS_ERR(fp)) { |
1379 | fc_lport_error(lport, fp); | |
1380 | goto err; | |
1381 | } | |
1382 | ||
42e9a92f RL |
1383 | op = fc_frame_payload_op(fp); |
1384 | if (op == ELS_LS_ACC) | |
1385 | fc_lport_enter_reset(lport); | |
1386 | else | |
1387 | fc_lport_error(lport, fp); | |
1388 | ||
1389 | out: | |
1390 | fc_frame_free(fp); | |
1391 | err: | |
1392 | mutex_unlock(&lport->lp_mutex); | |
1393 | } | |
1394 | ||
1395 | /** | |
34f42a07 | 1396 | * fc_rport_enter_logo() - Logout of the fabric |
42e9a92f RL |
1397 | * @lport: Fibre Channel local port to be logged out |
1398 | * | |
1399 | * Locking Note: The lport lock is expected to be held before calling | |
1400 | * this routine. | |
1401 | */ | |
1402 | static void fc_lport_enter_logo(struct fc_lport *lport) | |
1403 | { | |
1404 | struct fc_frame *fp; | |
1405 | struct fc_els_logo *logo; | |
1406 | ||
7414705e RL |
1407 | FC_LPORT_DBG(lport, "Entered LOGO state from %s state\n", |
1408 | fc_lport_state(lport)); | |
42e9a92f RL |
1409 | |
1410 | fc_lport_state_enter(lport, LPORT_ST_LOGO); | |
1411 | ||
42e9a92f RL |
1412 | fp = fc_frame_alloc(lport, sizeof(*logo)); |
1413 | if (!fp) { | |
1414 | fc_lport_error(lport, fp); | |
1415 | return; | |
1416 | } | |
1417 | ||
1418 | if (!lport->tt.elsct_send(lport, NULL, fp, ELS_LOGO, fc_lport_logo_resp, | |
1419 | lport, lport->e_d_tov)) | |
1420 | fc_lport_error(lport, fp); | |
1421 | } | |
1422 | ||
1423 | /** | |
34f42a07 | 1424 | * fc_lport_flogi_resp() - Handle response to FLOGI request |
42e9a92f RL |
1425 | * @sp: current sequence in FLOGI exchange |
1426 | * @fp: response frame | |
1427 | * @lp_arg: Fibre Channel lport port instance that sent the FLOGI request | |
1428 | * | |
1429 | * Locking Note: This function will be called without the lport lock | |
1430 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1431 | * and then unlock the lport. | |
1432 | */ | |
1433 | static void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1434 | void *lp_arg) | |
1435 | { | |
1436 | struct fc_lport *lport = lp_arg; | |
1437 | struct fc_frame_header *fh; | |
1438 | struct fc_els_flogi *flp; | |
1439 | u32 did; | |
1440 | u16 csp_flags; | |
1441 | unsigned int r_a_tov; | |
1442 | unsigned int e_d_tov; | |
1443 | u16 mfs; | |
1444 | ||
1445 | if (fp == ERR_PTR(-FC_EX_CLOSED)) | |
1446 | return; | |
1447 | ||
1448 | mutex_lock(&lport->lp_mutex); | |
1449 | ||
7414705e | 1450 | FC_LPORT_DBG(lport, "Received a FLOGI response\n"); |
42e9a92f RL |
1451 | |
1452 | if (lport->state != LPORT_ST_FLOGI) { | |
7414705e RL |
1453 | FC_LPORT_DBG(lport, "Received a FLOGI response, but in state " |
1454 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1455 | if (IS_ERR(fp)) |
1456 | goto err; | |
42e9a92f RL |
1457 | goto out; |
1458 | } | |
1459 | ||
76f6804e AJ |
1460 | if (IS_ERR(fp)) { |
1461 | fc_lport_error(lport, fp); | |
1462 | goto err; | |
1463 | } | |
1464 | ||
42e9a92f RL |
1465 | fh = fc_frame_header_get(fp); |
1466 | did = ntoh24(fh->fh_d_id); | |
1467 | if (fc_frame_payload_op(fp) == ELS_LS_ACC && did != 0) { | |
1468 | ||
7414705e RL |
1469 | printk(KERN_INFO "libfc: Assigned FID (%6x) in FLOGI response\n", |
1470 | did); | |
42e9a92f RL |
1471 | fc_host_port_id(lport->host) = did; |
1472 | ||
1473 | flp = fc_frame_payload_get(fp, sizeof(*flp)); | |
1474 | if (flp) { | |
1475 | mfs = ntohs(flp->fl_csp.sp_bb_data) & | |
1476 | FC_SP_BB_DATA_MASK; | |
1477 | if (mfs >= FC_SP_MIN_MAX_PAYLOAD && | |
1478 | mfs < lport->mfs) | |
1479 | lport->mfs = mfs; | |
1480 | csp_flags = ntohs(flp->fl_csp.sp_features); | |
1481 | r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov); | |
1482 | e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov); | |
1483 | if (csp_flags & FC_SP_FT_EDTR) | |
1484 | e_d_tov /= 1000000; | |
1485 | if ((csp_flags & FC_SP_FT_FPORT) == 0) { | |
1486 | if (e_d_tov > lport->e_d_tov) | |
1487 | lport->e_d_tov = e_d_tov; | |
1488 | lport->r_a_tov = 2 * e_d_tov; | |
7414705e RL |
1489 | printk(KERN_INFO "libfc: Port (%6x) entered " |
1490 | "point to point mode\n", did); | |
42e9a92f RL |
1491 | fc_lport_ptp_setup(lport, ntoh24(fh->fh_s_id), |
1492 | get_unaligned_be64( | |
1493 | &flp->fl_wwpn), | |
1494 | get_unaligned_be64( | |
1495 | &flp->fl_wwnn)); | |
1496 | } else { | |
1497 | lport->e_d_tov = e_d_tov; | |
1498 | lport->r_a_tov = r_a_tov; | |
1499 | fc_host_fabric_name(lport->host) = | |
1500 | get_unaligned_be64(&flp->fl_wwnn); | |
1501 | fc_lport_enter_dns(lport); | |
1502 | } | |
1503 | } | |
1504 | ||
1505 | if (flp) { | |
1506 | csp_flags = ntohs(flp->fl_csp.sp_features); | |
1507 | if ((csp_flags & FC_SP_FT_FPORT) == 0) { | |
1508 | lport->tt.disc_start(fc_lport_disc_callback, | |
1509 | lport); | |
1510 | } | |
1511 | } | |
1512 | } else { | |
7414705e | 1513 | FC_LPORT_DBG(lport, "Bad FLOGI response\n"); |
42e9a92f RL |
1514 | } |
1515 | ||
1516 | out: | |
1517 | fc_frame_free(fp); | |
1518 | err: | |
1519 | mutex_unlock(&lport->lp_mutex); | |
1520 | } | |
1521 | ||
1522 | /** | |
34f42a07 | 1523 | * fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager |
42e9a92f RL |
1524 | * @lport: Fibre Channel local port to be logged in to the fabric |
1525 | * | |
1526 | * Locking Note: The lport lock is expected to be held before calling | |
1527 | * this routine. | |
1528 | */ | |
1529 | void fc_lport_enter_flogi(struct fc_lport *lport) | |
1530 | { | |
1531 | struct fc_frame *fp; | |
1532 | ||
7414705e RL |
1533 | FC_LPORT_DBG(lport, "Entered FLOGI state from %s state\n", |
1534 | fc_lport_state(lport)); | |
42e9a92f RL |
1535 | |
1536 | fc_lport_state_enter(lport, LPORT_ST_FLOGI); | |
1537 | ||
1538 | fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); | |
1539 | if (!fp) | |
1540 | return fc_lport_error(lport, fp); | |
1541 | ||
1542 | if (!lport->tt.elsct_send(lport, NULL, fp, ELS_FLOGI, | |
1543 | fc_lport_flogi_resp, lport, lport->e_d_tov)) | |
1544 | fc_lport_error(lport, fp); | |
1545 | } | |
1546 | ||
1547 | /* Configure a fc_lport */ | |
1548 | int fc_lport_config(struct fc_lport *lport) | |
1549 | { | |
1550 | INIT_DELAYED_WORK(&lport->retry_work, fc_lport_timeout); | |
1551 | mutex_init(&lport->lp_mutex); | |
1552 | ||
b1d9fd55 | 1553 | fc_lport_state_enter(lport, LPORT_ST_DISABLED); |
42e9a92f RL |
1554 | |
1555 | fc_lport_add_fc4_type(lport, FC_TYPE_FCP); | |
1556 | fc_lport_add_fc4_type(lport, FC_TYPE_CT); | |
1557 | ||
1558 | return 0; | |
1559 | } | |
1560 | EXPORT_SYMBOL(fc_lport_config); | |
1561 | ||
1562 | int fc_lport_init(struct fc_lport *lport) | |
1563 | { | |
1564 | if (!lport->tt.lport_recv) | |
1565 | lport->tt.lport_recv = fc_lport_recv_req; | |
1566 | ||
1567 | if (!lport->tt.lport_reset) | |
1568 | lport->tt.lport_reset = fc_lport_reset; | |
1569 | ||
1570 | fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; | |
1571 | fc_host_node_name(lport->host) = lport->wwnn; | |
1572 | fc_host_port_name(lport->host) = lport->wwpn; | |
1573 | fc_host_supported_classes(lport->host) = FC_COS_CLASS3; | |
1574 | memset(fc_host_supported_fc4s(lport->host), 0, | |
1575 | sizeof(fc_host_supported_fc4s(lport->host))); | |
1576 | fc_host_supported_fc4s(lport->host)[2] = 1; | |
1577 | fc_host_supported_fc4s(lport->host)[7] = 1; | |
1578 | ||
1579 | /* This value is also unchanging */ | |
1580 | memset(fc_host_active_fc4s(lport->host), 0, | |
1581 | sizeof(fc_host_active_fc4s(lport->host))); | |
1582 | fc_host_active_fc4s(lport->host)[2] = 1; | |
1583 | fc_host_active_fc4s(lport->host)[7] = 1; | |
1584 | fc_host_maxframe_size(lport->host) = lport->mfs; | |
1585 | fc_host_supported_speeds(lport->host) = 0; | |
1586 | if (lport->link_supported_speeds & FC_PORTSPEED_1GBIT) | |
1587 | fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_1GBIT; | |
1588 | if (lport->link_supported_speeds & FC_PORTSPEED_10GBIT) | |
1589 | fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_10GBIT; | |
1590 | ||
1591 | return 0; | |
1592 | } | |
1593 | EXPORT_SYMBOL(fc_lport_init); |