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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 | ||
8866a5d9 RL |
98 | #include "fc_libfc.h" |
99 | ||
42e9a92f RL |
100 | /* Fabric IDs to use for point-to-point mode, chosen on whims. */ |
101 | #define FC_LOCAL_PTP_FID_LO 0x010101 | |
102 | #define FC_LOCAL_PTP_FID_HI 0x010102 | |
103 | ||
104 | #define DNS_DELAY 3 /* Discovery delay after RSCN (in seconds)*/ | |
105 | ||
42e9a92f RL |
106 | static void fc_lport_error(struct fc_lport *, struct fc_frame *); |
107 | ||
108 | static void fc_lport_enter_reset(struct fc_lport *); | |
109 | static void fc_lport_enter_flogi(struct fc_lport *); | |
110 | static void fc_lport_enter_dns(struct fc_lport *); | |
111 | static void fc_lport_enter_rpn_id(struct fc_lport *); | |
112 | static void fc_lport_enter_rft_id(struct fc_lport *); | |
113 | static void fc_lport_enter_scr(struct fc_lport *); | |
114 | static void fc_lport_enter_ready(struct fc_lport *); | |
115 | static void fc_lport_enter_logo(struct fc_lport *); | |
116 | ||
117 | static const char *fc_lport_state_names[] = { | |
b1d9fd55 | 118 | [LPORT_ST_DISABLED] = "disabled", |
42e9a92f RL |
119 | [LPORT_ST_FLOGI] = "FLOGI", |
120 | [LPORT_ST_DNS] = "dNS", | |
121 | [LPORT_ST_RPN_ID] = "RPN_ID", | |
122 | [LPORT_ST_RFT_ID] = "RFT_ID", | |
123 | [LPORT_ST_SCR] = "SCR", | |
124 | [LPORT_ST_READY] = "Ready", | |
125 | [LPORT_ST_LOGO] = "LOGO", | |
126 | [LPORT_ST_RESET] = "reset", | |
127 | }; | |
128 | ||
129 | static int fc_frame_drop(struct fc_lport *lport, struct fc_frame *fp) | |
130 | { | |
131 | fc_frame_free(fp); | |
132 | return 0; | |
133 | } | |
134 | ||
135 | /** | |
34f42a07 | 136 | * fc_lport_rport_callback() - Event handler for rport events |
42e9a92f | 137 | * @lport: The lport which is receiving the event |
9fb9d328 | 138 | * @rdata: private remote port data |
42e9a92f RL |
139 | * @event: The event that occured |
140 | * | |
141 | * Locking Note: The rport lock should not be held when calling | |
142 | * this function. | |
143 | */ | |
144 | static void fc_lport_rport_callback(struct fc_lport *lport, | |
9fb9d328 | 145 | struct fc_rport_priv *rdata, |
42e9a92f RL |
146 | enum fc_rport_event event) |
147 | { | |
7414705e | 148 | FC_LPORT_DBG(lport, "Received a %d event for port (%6x)\n", event, |
f211fa51 | 149 | rdata->ids.port_id); |
42e9a92f | 150 | |
b5cbf083 | 151 | mutex_lock(&lport->lp_mutex); |
42e9a92f | 152 | switch (event) { |
4c0f62b5 | 153 | case RPORT_EV_READY: |
b5cbf083 JE |
154 | if (lport->state == LPORT_ST_DNS) { |
155 | lport->dns_rp = rdata; | |
156 | fc_lport_enter_rpn_id(lport); | |
157 | } else { | |
158 | FC_LPORT_DBG(lport, "Received an READY event " | |
159 | "on port (%6x) for the directory " | |
160 | "server, but the lport is not " | |
161 | "in the DNS state, it's in the " | |
162 | "%d state", rdata->ids.port_id, | |
163 | lport->state); | |
164 | lport->tt.rport_logoff(rdata); | |
165 | } | |
42e9a92f RL |
166 | break; |
167 | case RPORT_EV_LOGO: | |
168 | case RPORT_EV_FAILED: | |
169 | case RPORT_EV_STOP: | |
b5cbf083 | 170 | lport->dns_rp = NULL; |
42e9a92f RL |
171 | break; |
172 | case RPORT_EV_NONE: | |
173 | break; | |
174 | } | |
b5cbf083 | 175 | mutex_unlock(&lport->lp_mutex); |
42e9a92f RL |
176 | } |
177 | ||
178 | /** | |
34f42a07 | 179 | * fc_lport_state() - Return a string which represents the lport's state |
42e9a92f RL |
180 | * @lport: The lport whose state is to converted to a string |
181 | */ | |
182 | static const char *fc_lport_state(struct fc_lport *lport) | |
183 | { | |
184 | const char *cp; | |
185 | ||
186 | cp = fc_lport_state_names[lport->state]; | |
187 | if (!cp) | |
188 | cp = "unknown"; | |
189 | return cp; | |
190 | } | |
191 | ||
192 | /** | |
34f42a07 | 193 | * fc_lport_ptp_setup() - Create an rport for point-to-point mode |
42e9a92f RL |
194 | * @lport: The lport to attach the ptp rport to |
195 | * @fid: The FID of the ptp rport | |
196 | * @remote_wwpn: The WWPN of the ptp rport | |
197 | * @remote_wwnn: The WWNN of the ptp rport | |
198 | */ | |
199 | static void fc_lport_ptp_setup(struct fc_lport *lport, | |
200 | u32 remote_fid, u64 remote_wwpn, | |
201 | u64 remote_wwnn) | |
202 | { | |
48f00902 JE |
203 | mutex_lock(&lport->disc.disc_mutex); |
204 | if (lport->ptp_rp) | |
42e9a92f | 205 | lport->tt.rport_logoff(lport->ptp_rp); |
9737e6a7 RL |
206 | lport->ptp_rp = lport->tt.rport_create(lport, remote_fid); |
207 | lport->ptp_rp->ids.port_name = remote_wwpn; | |
208 | lport->ptp_rp->ids.node_name = remote_wwnn; | |
48f00902 | 209 | mutex_unlock(&lport->disc.disc_mutex); |
42e9a92f RL |
210 | |
211 | lport->tt.rport_login(lport->ptp_rp); | |
212 | ||
213 | fc_lport_enter_ready(lport); | |
214 | } | |
215 | ||
216 | void fc_get_host_port_type(struct Scsi_Host *shost) | |
217 | { | |
218 | /* TODO - currently just NPORT */ | |
219 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
220 | } | |
221 | EXPORT_SYMBOL(fc_get_host_port_type); | |
222 | ||
223 | void fc_get_host_port_state(struct Scsi_Host *shost) | |
224 | { | |
225 | struct fc_lport *lp = shost_priv(shost); | |
226 | ||
8faecddb CL |
227 | mutex_lock(&lp->lp_mutex); |
228 | if (!lp->link_up) | |
229 | fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; | |
42e9a92f | 230 | else |
8faecddb CL |
231 | switch (lp->state) { |
232 | case LPORT_ST_READY: | |
233 | fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; | |
234 | break; | |
235 | default: | |
236 | fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; | |
237 | } | |
238 | mutex_unlock(&lp->lp_mutex); | |
42e9a92f RL |
239 | } |
240 | EXPORT_SYMBOL(fc_get_host_port_state); | |
241 | ||
242 | void fc_get_host_speed(struct Scsi_Host *shost) | |
243 | { | |
244 | struct fc_lport *lport = shost_priv(shost); | |
245 | ||
246 | fc_host_speed(shost) = lport->link_speed; | |
247 | } | |
248 | EXPORT_SYMBOL(fc_get_host_speed); | |
249 | ||
250 | struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost) | |
251 | { | |
42e9a92f RL |
252 | struct fc_host_statistics *fcoe_stats; |
253 | struct fc_lport *lp = shost_priv(shost); | |
254 | struct timespec v0, v1; | |
582b45bc | 255 | unsigned int cpu; |
42e9a92f RL |
256 | |
257 | fcoe_stats = &lp->host_stats; | |
258 | memset(fcoe_stats, 0, sizeof(struct fc_host_statistics)); | |
259 | ||
260 | jiffies_to_timespec(jiffies, &v0); | |
261 | jiffies_to_timespec(lp->boot_time, &v1); | |
262 | fcoe_stats->seconds_since_last_reset = (v0.tv_sec - v1.tv_sec); | |
263 | ||
582b45bc RL |
264 | for_each_possible_cpu(cpu) { |
265 | struct fcoe_dev_stats *stats; | |
266 | ||
267 | stats = per_cpu_ptr(lp->dev_stats, cpu); | |
268 | ||
42e9a92f RL |
269 | fcoe_stats->tx_frames += stats->TxFrames; |
270 | fcoe_stats->tx_words += stats->TxWords; | |
271 | fcoe_stats->rx_frames += stats->RxFrames; | |
272 | fcoe_stats->rx_words += stats->RxWords; | |
273 | fcoe_stats->error_frames += stats->ErrorFrames; | |
274 | fcoe_stats->invalid_crc_count += stats->InvalidCRCCount; | |
275 | fcoe_stats->fcp_input_requests += stats->InputRequests; | |
276 | fcoe_stats->fcp_output_requests += stats->OutputRequests; | |
277 | fcoe_stats->fcp_control_requests += stats->ControlRequests; | |
278 | fcoe_stats->fcp_input_megabytes += stats->InputMegabytes; | |
279 | fcoe_stats->fcp_output_megabytes += stats->OutputMegabytes; | |
280 | fcoe_stats->link_failure_count += stats->LinkFailureCount; | |
281 | } | |
282 | fcoe_stats->lip_count = -1; | |
283 | fcoe_stats->nos_count = -1; | |
284 | fcoe_stats->loss_of_sync_count = -1; | |
285 | fcoe_stats->loss_of_signal_count = -1; | |
286 | fcoe_stats->prim_seq_protocol_err_count = -1; | |
287 | fcoe_stats->dumped_frames = -1; | |
288 | return fcoe_stats; | |
289 | } | |
290 | EXPORT_SYMBOL(fc_get_host_stats); | |
291 | ||
292 | /* | |
293 | * Fill in FLOGI command for request. | |
294 | */ | |
295 | static void | |
296 | fc_lport_flogi_fill(struct fc_lport *lport, struct fc_els_flogi *flogi, | |
297 | unsigned int op) | |
298 | { | |
299 | struct fc_els_csp *sp; | |
300 | struct fc_els_cssp *cp; | |
301 | ||
302 | memset(flogi, 0, sizeof(*flogi)); | |
303 | flogi->fl_cmd = (u8) op; | |
304 | put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn); | |
305 | put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn); | |
306 | sp = &flogi->fl_csp; | |
307 | sp->sp_hi_ver = 0x20; | |
308 | sp->sp_lo_ver = 0x20; | |
309 | sp->sp_bb_cred = htons(10); /* this gets set by gateway */ | |
310 | sp->sp_bb_data = htons((u16) lport->mfs); | |
311 | cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */ | |
312 | cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ); | |
313 | if (op != ELS_FLOGI) { | |
314 | sp->sp_features = htons(FC_SP_FT_CIRO); | |
315 | sp->sp_tot_seq = htons(255); /* seq. we accept */ | |
316 | sp->sp_rel_off = htons(0x1f); | |
317 | sp->sp_e_d_tov = htonl(lport->e_d_tov); | |
318 | ||
319 | cp->cp_rdfs = htons((u16) lport->mfs); | |
320 | cp->cp_con_seq = htons(255); | |
321 | cp->cp_open_seq = 1; | |
322 | } | |
323 | } | |
324 | ||
325 | /* | |
326 | * Add a supported FC-4 type. | |
327 | */ | |
328 | static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type) | |
329 | { | |
330 | __be32 *mp; | |
331 | ||
332 | mp = &lport->fcts.ff_type_map[type / FC_NS_BPW]; | |
333 | *mp = htonl(ntohl(*mp) | 1UL << (type % FC_NS_BPW)); | |
334 | } | |
335 | ||
336 | /** | |
34f42a07 | 337 | * fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report. |
42e9a92f RL |
338 | * @lport: Fibre Channel local port recieving the RLIR |
339 | * @sp: current sequence in the RLIR exchange | |
340 | * @fp: RLIR request frame | |
341 | * | |
1b69bc06 | 342 | * Locking Note: The lport lock is expected to be held before calling |
42e9a92f RL |
343 | * this function. |
344 | */ | |
345 | static void fc_lport_recv_rlir_req(struct fc_seq *sp, struct fc_frame *fp, | |
346 | struct fc_lport *lport) | |
347 | { | |
7414705e RL |
348 | FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n", |
349 | fc_lport_state(lport)); | |
42e9a92f RL |
350 | |
351 | lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); | |
352 | fc_frame_free(fp); | |
353 | } | |
354 | ||
355 | /** | |
34f42a07 | 356 | * fc_lport_recv_echo_req() - Handle received ECHO request |
42e9a92f RL |
357 | * @lport: Fibre Channel local port recieving the ECHO |
358 | * @sp: current sequence in the ECHO exchange | |
359 | * @fp: ECHO request frame | |
360 | * | |
1b69bc06 | 361 | * Locking Note: The lport lock is expected to be held before calling |
42e9a92f RL |
362 | * this function. |
363 | */ | |
364 | static void fc_lport_recv_echo_req(struct fc_seq *sp, struct fc_frame *in_fp, | |
365 | struct fc_lport *lport) | |
366 | { | |
367 | struct fc_frame *fp; | |
368 | struct fc_exch *ep = fc_seq_exch(sp); | |
369 | unsigned int len; | |
370 | void *pp; | |
371 | void *dp; | |
372 | u32 f_ctl; | |
373 | ||
1b69bc06 | 374 | FC_LPORT_DBG(lport, "Received ECHO request while in state %s\n", |
7414705e | 375 | fc_lport_state(lport)); |
42e9a92f RL |
376 | |
377 | len = fr_len(in_fp) - sizeof(struct fc_frame_header); | |
378 | pp = fc_frame_payload_get(in_fp, len); | |
379 | ||
380 | if (len < sizeof(__be32)) | |
381 | len = sizeof(__be32); | |
382 | ||
383 | fp = fc_frame_alloc(lport, len); | |
384 | if (fp) { | |
385 | dp = fc_frame_payload_get(fp, len); | |
386 | memcpy(dp, pp, len); | |
1b69bc06 | 387 | *((__be32 *)dp) = htonl(ELS_LS_ACC << 24); |
42e9a92f RL |
388 | sp = lport->tt.seq_start_next(sp); |
389 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; | |
390 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
391 | FC_TYPE_ELS, f_ctl, 0); | |
392 | lport->tt.seq_send(lport, sp, fp); | |
393 | } | |
394 | fc_frame_free(in_fp); | |
395 | } | |
396 | ||
397 | /** | |
1b69bc06 JE |
398 | * fc_lport_recv_rnid_req() - Handle received Request Node ID data request |
399 | * @sp: The sequence in the RNID exchange | |
400 | * @fp: The RNID request frame | |
401 | * @lport: The local port recieving the RNID | |
42e9a92f | 402 | * |
1b69bc06 | 403 | * Locking Note: The lport lock is expected to be held before calling |
42e9a92f RL |
404 | * this function. |
405 | */ | |
406 | static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp, | |
407 | struct fc_lport *lport) | |
408 | { | |
409 | struct fc_frame *fp; | |
410 | struct fc_exch *ep = fc_seq_exch(sp); | |
411 | struct fc_els_rnid *req; | |
412 | struct { | |
413 | struct fc_els_rnid_resp rnid; | |
414 | struct fc_els_rnid_cid cid; | |
415 | struct fc_els_rnid_gen gen; | |
416 | } *rp; | |
417 | struct fc_seq_els_data rjt_data; | |
418 | u8 fmt; | |
419 | size_t len; | |
420 | u32 f_ctl; | |
421 | ||
7414705e RL |
422 | FC_LPORT_DBG(lport, "Received RNID request while in state %s\n", |
423 | fc_lport_state(lport)); | |
42e9a92f RL |
424 | |
425 | req = fc_frame_payload_get(in_fp, sizeof(*req)); | |
426 | if (!req) { | |
427 | rjt_data.fp = NULL; | |
428 | rjt_data.reason = ELS_RJT_LOGIC; | |
429 | rjt_data.explan = ELS_EXPL_NONE; | |
430 | lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); | |
431 | } else { | |
432 | fmt = req->rnid_fmt; | |
433 | len = sizeof(*rp); | |
434 | if (fmt != ELS_RNIDF_GEN || | |
435 | ntohl(lport->rnid_gen.rnid_atype) == 0) { | |
436 | fmt = ELS_RNIDF_NONE; /* nothing to provide */ | |
437 | len -= sizeof(rp->gen); | |
438 | } | |
439 | fp = fc_frame_alloc(lport, len); | |
440 | if (fp) { | |
441 | rp = fc_frame_payload_get(fp, len); | |
442 | memset(rp, 0, len); | |
443 | rp->rnid.rnid_cmd = ELS_LS_ACC; | |
444 | rp->rnid.rnid_fmt = fmt; | |
445 | rp->rnid.rnid_cid_len = sizeof(rp->cid); | |
446 | rp->cid.rnid_wwpn = htonll(lport->wwpn); | |
447 | rp->cid.rnid_wwnn = htonll(lport->wwnn); | |
448 | if (fmt == ELS_RNIDF_GEN) { | |
449 | rp->rnid.rnid_sid_len = sizeof(rp->gen); | |
450 | memcpy(&rp->gen, &lport->rnid_gen, | |
451 | sizeof(rp->gen)); | |
452 | } | |
453 | sp = lport->tt.seq_start_next(sp); | |
454 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; | |
455 | f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; | |
456 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
457 | FC_TYPE_ELS, f_ctl, 0); | |
458 | lport->tt.seq_send(lport, sp, fp); | |
459 | } | |
460 | } | |
461 | fc_frame_free(in_fp); | |
462 | } | |
463 | ||
42e9a92f | 464 | /** |
34f42a07 | 465 | * fc_lport_recv_logo_req() - Handle received fabric LOGO request |
42e9a92f RL |
466 | * @lport: Fibre Channel local port recieving the LOGO |
467 | * @sp: current sequence in the LOGO exchange | |
468 | * @fp: LOGO request frame | |
469 | * | |
470 | * Locking Note: The lport lock is exected to be held before calling | |
471 | * this function. | |
472 | */ | |
473 | static void fc_lport_recv_logo_req(struct fc_seq *sp, struct fc_frame *fp, | |
474 | struct fc_lport *lport) | |
475 | { | |
476 | lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); | |
477 | fc_lport_enter_reset(lport); | |
478 | fc_frame_free(fp); | |
479 | } | |
480 | ||
481 | /** | |
34f42a07 | 482 | * fc_fabric_login() - Start the lport state machine |
42e9a92f RL |
483 | * @lport: The lport that should log into the fabric |
484 | * | |
485 | * Locking Note: This function should not be called | |
486 | * with the lport lock held. | |
487 | */ | |
488 | int fc_fabric_login(struct fc_lport *lport) | |
489 | { | |
490 | int rc = -1; | |
491 | ||
492 | mutex_lock(&lport->lp_mutex); | |
b1d9fd55 | 493 | if (lport->state == LPORT_ST_DISABLED) { |
42e9a92f RL |
494 | fc_lport_enter_reset(lport); |
495 | rc = 0; | |
496 | } | |
497 | mutex_unlock(&lport->lp_mutex); | |
498 | ||
499 | return rc; | |
500 | } | |
501 | EXPORT_SYMBOL(fc_fabric_login); | |
502 | ||
503 | /** | |
8faecddb | 504 | * __fc_linkup() - Handler for transport linkup events |
42e9a92f | 505 | * @lport: The lport whose link is up |
8faecddb CL |
506 | * |
507 | * Locking: must be called with the lp_mutex held | |
42e9a92f | 508 | */ |
8faecddb | 509 | void __fc_linkup(struct fc_lport *lport) |
42e9a92f | 510 | { |
bc0e17f6 VD |
511 | if (!lport->link_up) { |
512 | lport->link_up = 1; | |
42e9a92f RL |
513 | |
514 | if (lport->state == LPORT_ST_RESET) | |
515 | fc_lport_enter_flogi(lport); | |
516 | } | |
8faecddb CL |
517 | } |
518 | ||
519 | /** | |
520 | * fc_linkup() - Handler for transport linkup events | |
521 | * @lport: The lport whose link is up | |
522 | */ | |
523 | void fc_linkup(struct fc_lport *lport) | |
524 | { | |
525 | printk(KERN_INFO "libfc: Link up on port (%6x)\n", | |
526 | fc_host_port_id(lport->host)); | |
527 | ||
528 | mutex_lock(&lport->lp_mutex); | |
529 | __fc_linkup(lport); | |
42e9a92f RL |
530 | mutex_unlock(&lport->lp_mutex); |
531 | } | |
532 | EXPORT_SYMBOL(fc_linkup); | |
533 | ||
534 | /** | |
8faecddb | 535 | * __fc_linkdown() - Handler for transport linkdown events |
42e9a92f | 536 | * @lport: The lport whose link is down |
8faecddb CL |
537 | * |
538 | * Locking: must be called with the lp_mutex held | |
42e9a92f | 539 | */ |
8faecddb | 540 | void __fc_linkdown(struct fc_lport *lport) |
42e9a92f | 541 | { |
bc0e17f6 VD |
542 | if (lport->link_up) { |
543 | lport->link_up = 0; | |
42e9a92f RL |
544 | fc_lport_enter_reset(lport); |
545 | lport->tt.fcp_cleanup(lport); | |
546 | } | |
8faecddb CL |
547 | } |
548 | ||
549 | /** | |
550 | * fc_linkdown() - Handler for transport linkdown events | |
551 | * @lport: The lport whose link is down | |
552 | */ | |
553 | void fc_linkdown(struct fc_lport *lport) | |
554 | { | |
555 | printk(KERN_INFO "libfc: Link down on port (%6x)\n", | |
556 | fc_host_port_id(lport->host)); | |
557 | ||
558 | mutex_lock(&lport->lp_mutex); | |
559 | __fc_linkdown(lport); | |
42e9a92f RL |
560 | mutex_unlock(&lport->lp_mutex); |
561 | } | |
562 | EXPORT_SYMBOL(fc_linkdown); | |
563 | ||
42e9a92f | 564 | /** |
34f42a07 | 565 | * fc_fabric_logoff() - Logout of the fabric |
42e9a92f RL |
566 | * @lport: fc_lport pointer to logoff the fabric |
567 | * | |
568 | * Return value: | |
569 | * 0 for success, -1 for failure | |
34f42a07 | 570 | */ |
42e9a92f RL |
571 | int fc_fabric_logoff(struct fc_lport *lport) |
572 | { | |
573 | lport->tt.disc_stop_final(lport); | |
574 | mutex_lock(&lport->lp_mutex); | |
a0fd2e49 AJ |
575 | if (lport->dns_rp) |
576 | lport->tt.rport_logoff(lport->dns_rp); | |
577 | mutex_unlock(&lport->lp_mutex); | |
578 | lport->tt.rport_flush_queue(); | |
579 | mutex_lock(&lport->lp_mutex); | |
42e9a92f RL |
580 | fc_lport_enter_logo(lport); |
581 | mutex_unlock(&lport->lp_mutex); | |
f7db2c15 | 582 | cancel_delayed_work_sync(&lport->retry_work); |
42e9a92f RL |
583 | return 0; |
584 | } | |
585 | EXPORT_SYMBOL(fc_fabric_logoff); | |
586 | ||
587 | /** | |
34f42a07 | 588 | * fc_lport_destroy() - unregister a fc_lport |
42e9a92f RL |
589 | * @lport: fc_lport pointer to unregister |
590 | * | |
591 | * Return value: | |
592 | * None | |
593 | * Note: | |
594 | * exit routine for fc_lport instance | |
595 | * clean-up all the allocated memory | |
596 | * and free up other system resources. | |
597 | * | |
34f42a07 | 598 | */ |
42e9a92f RL |
599 | int fc_lport_destroy(struct fc_lport *lport) |
600 | { | |
bbf15669 | 601 | mutex_lock(&lport->lp_mutex); |
b1d9fd55 | 602 | lport->state = LPORT_ST_DISABLED; |
bbf15669 | 603 | lport->link_up = 0; |
42e9a92f | 604 | lport->tt.frame_send = fc_frame_drop; |
bbf15669 AJ |
605 | mutex_unlock(&lport->lp_mutex); |
606 | ||
42e9a92f | 607 | lport->tt.fcp_abort_io(lport); |
e9ba8b42 | 608 | lport->tt.disc_stop_final(lport); |
1f6ff364 | 609 | lport->tt.exch_mgr_reset(lport, 0, 0); |
42e9a92f RL |
610 | return 0; |
611 | } | |
612 | EXPORT_SYMBOL(fc_lport_destroy); | |
613 | ||
614 | /** | |
34f42a07 | 615 | * fc_set_mfs() - sets up the mfs for the corresponding fc_lport |
42e9a92f RL |
616 | * @lport: fc_lport pointer to unregister |
617 | * @mfs: the new mfs for fc_lport | |
618 | * | |
619 | * Set mfs for the given fc_lport to the new mfs. | |
620 | * | |
621 | * Return: 0 for success | |
34f42a07 | 622 | */ |
42e9a92f RL |
623 | int fc_set_mfs(struct fc_lport *lport, u32 mfs) |
624 | { | |
625 | unsigned int old_mfs; | |
626 | int rc = -EINVAL; | |
627 | ||
628 | mutex_lock(&lport->lp_mutex); | |
629 | ||
630 | old_mfs = lport->mfs; | |
631 | ||
632 | if (mfs >= FC_MIN_MAX_FRAME) { | |
633 | mfs &= ~3; | |
634 | if (mfs > FC_MAX_FRAME) | |
635 | mfs = FC_MAX_FRAME; | |
636 | mfs -= sizeof(struct fc_frame_header); | |
637 | lport->mfs = mfs; | |
638 | rc = 0; | |
639 | } | |
640 | ||
641 | if (!rc && mfs < old_mfs) | |
642 | fc_lport_enter_reset(lport); | |
643 | ||
644 | mutex_unlock(&lport->lp_mutex); | |
645 | ||
646 | return rc; | |
647 | } | |
648 | EXPORT_SYMBOL(fc_set_mfs); | |
649 | ||
650 | /** | |
34f42a07 | 651 | * fc_lport_disc_callback() - Callback for discovery events |
42e9a92f RL |
652 | * @lport: FC local port |
653 | * @event: The discovery event | |
654 | */ | |
655 | void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event) | |
656 | { | |
657 | switch (event) { | |
658 | case DISC_EV_SUCCESS: | |
7414705e | 659 | FC_LPORT_DBG(lport, "Discovery succeeded\n"); |
42e9a92f RL |
660 | break; |
661 | case DISC_EV_FAILED: | |
7414705e RL |
662 | printk(KERN_ERR "libfc: Discovery failed for port (%6x)\n", |
663 | fc_host_port_id(lport->host)); | |
42e9a92f RL |
664 | mutex_lock(&lport->lp_mutex); |
665 | fc_lport_enter_reset(lport); | |
666 | mutex_unlock(&lport->lp_mutex); | |
667 | break; | |
668 | case DISC_EV_NONE: | |
669 | WARN_ON(1); | |
670 | break; | |
671 | } | |
672 | } | |
673 | ||
674 | /** | |
34f42a07 | 675 | * fc_rport_enter_ready() - Enter the ready state and start discovery |
42e9a92f RL |
676 | * @lport: Fibre Channel local port that is ready |
677 | * | |
678 | * Locking Note: The lport lock is expected to be held before calling | |
679 | * this routine. | |
680 | */ | |
681 | static void fc_lport_enter_ready(struct fc_lport *lport) | |
682 | { | |
7414705e RL |
683 | FC_LPORT_DBG(lport, "Entered READY from state %s\n", |
684 | fc_lport_state(lport)); | |
42e9a92f RL |
685 | |
686 | fc_lport_state_enter(lport, LPORT_ST_READY); | |
8faecddb CL |
687 | if (lport->vport) |
688 | fc_vport_set_state(lport->vport, FC_VPORT_ACTIVE); | |
689 | fc_vports_linkchange(lport); | |
42e9a92f | 690 | |
29d898e9 JE |
691 | if (!lport->ptp_rp) |
692 | lport->tt.disc_start(fc_lport_disc_callback, lport); | |
42e9a92f RL |
693 | } |
694 | ||
695 | /** | |
34f42a07 | 696 | * fc_lport_recv_flogi_req() - Receive a FLOGI request |
42e9a92f RL |
697 | * @sp_in: The sequence the FLOGI is on |
698 | * @rx_fp: The frame the FLOGI is in | |
699 | * @lport: The lport that recieved the request | |
700 | * | |
701 | * A received FLOGI request indicates a point-to-point connection. | |
702 | * Accept it with the common service parameters indicating our N port. | |
703 | * Set up to do a PLOGI if we have the higher-number WWPN. | |
704 | * | |
1b69bc06 | 705 | * Locking Note: The lport lock is expected to be held before calling |
42e9a92f RL |
706 | * this function. |
707 | */ | |
708 | static void fc_lport_recv_flogi_req(struct fc_seq *sp_in, | |
709 | struct fc_frame *rx_fp, | |
710 | struct fc_lport *lport) | |
711 | { | |
712 | struct fc_frame *fp; | |
713 | struct fc_frame_header *fh; | |
714 | struct fc_seq *sp; | |
715 | struct fc_exch *ep; | |
716 | struct fc_els_flogi *flp; | |
717 | struct fc_els_flogi *new_flp; | |
718 | u64 remote_wwpn; | |
719 | u32 remote_fid; | |
720 | u32 local_fid; | |
721 | u32 f_ctl; | |
722 | ||
7414705e RL |
723 | FC_LPORT_DBG(lport, "Received FLOGI request while in state %s\n", |
724 | fc_lport_state(lport)); | |
42e9a92f RL |
725 | |
726 | fh = fc_frame_header_get(rx_fp); | |
727 | remote_fid = ntoh24(fh->fh_s_id); | |
728 | flp = fc_frame_payload_get(rx_fp, sizeof(*flp)); | |
729 | if (!flp) | |
730 | goto out; | |
731 | remote_wwpn = get_unaligned_be64(&flp->fl_wwpn); | |
732 | if (remote_wwpn == lport->wwpn) { | |
7414705e RL |
733 | printk(KERN_WARNING "libfc: Received FLOGI from port " |
734 | "with same WWPN %llx\n", remote_wwpn); | |
42e9a92f RL |
735 | goto out; |
736 | } | |
7414705e | 737 | FC_LPORT_DBG(lport, "FLOGI from port WWPN %llx\n", remote_wwpn); |
42e9a92f RL |
738 | |
739 | /* | |
740 | * XXX what is the right thing to do for FIDs? | |
741 | * The originator might expect our S_ID to be 0xfffffe. | |
742 | * But if so, both of us could end up with the same FID. | |
743 | */ | |
744 | local_fid = FC_LOCAL_PTP_FID_LO; | |
745 | if (remote_wwpn < lport->wwpn) { | |
746 | local_fid = FC_LOCAL_PTP_FID_HI; | |
747 | if (!remote_fid || remote_fid == local_fid) | |
748 | remote_fid = FC_LOCAL_PTP_FID_LO; | |
749 | } else if (!remote_fid) { | |
750 | remote_fid = FC_LOCAL_PTP_FID_HI; | |
751 | } | |
752 | ||
753 | fc_host_port_id(lport->host) = local_fid; | |
754 | ||
755 | fp = fc_frame_alloc(lport, sizeof(*flp)); | |
756 | if (fp) { | |
757 | sp = lport->tt.seq_start_next(fr_seq(rx_fp)); | |
758 | new_flp = fc_frame_payload_get(fp, sizeof(*flp)); | |
759 | fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI); | |
760 | new_flp->fl_cmd = (u8) ELS_LS_ACC; | |
761 | ||
762 | /* | |
763 | * Send the response. If this fails, the originator should | |
764 | * repeat the sequence. | |
765 | */ | |
766 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; | |
767 | ep = fc_seq_exch(sp); | |
768 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
769 | FC_TYPE_ELS, f_ctl, 0); | |
770 | lport->tt.seq_send(lport, sp, fp); | |
771 | ||
772 | } else { | |
773 | fc_lport_error(lport, fp); | |
774 | } | |
775 | fc_lport_ptp_setup(lport, remote_fid, remote_wwpn, | |
776 | get_unaligned_be64(&flp->fl_wwnn)); | |
777 | ||
42e9a92f RL |
778 | out: |
779 | sp = fr_seq(rx_fp); | |
780 | fc_frame_free(rx_fp); | |
781 | } | |
782 | ||
783 | /** | |
34f42a07 | 784 | * fc_lport_recv_req() - The generic lport request handler |
42e9a92f RL |
785 | * @lport: The lport that received the request |
786 | * @sp: The sequence the request is on | |
787 | * @fp: The frame the request is in | |
788 | * | |
789 | * This function will see if the lport handles the request or | |
790 | * if an rport should handle the request. | |
791 | * | |
792 | * Locking Note: This function should not be called with the lport | |
793 | * lock held becuase it will grab the lock. | |
794 | */ | |
795 | static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp, | |
796 | struct fc_frame *fp) | |
797 | { | |
798 | struct fc_frame_header *fh = fc_frame_header_get(fp); | |
799 | void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *); | |
42e9a92f RL |
800 | |
801 | mutex_lock(&lport->lp_mutex); | |
802 | ||
803 | /* | |
804 | * Handle special ELS cases like FLOGI, LOGO, and | |
805 | * RSCN here. These don't require a session. | |
806 | * Even if we had a session, it might not be ready. | |
807 | */ | |
e9ba8b42 JE |
808 | if (!lport->link_up) |
809 | fc_frame_free(fp); | |
810 | else if (fh->fh_type == FC_TYPE_ELS && | |
811 | fh->fh_r_ctl == FC_RCTL_ELS_REQ) { | |
42e9a92f RL |
812 | /* |
813 | * Check opcode. | |
814 | */ | |
131203a1 | 815 | recv = lport->tt.rport_recv_req; |
42e9a92f RL |
816 | switch (fc_frame_payload_op(fp)) { |
817 | case ELS_FLOGI: | |
818 | recv = fc_lport_recv_flogi_req; | |
819 | break; | |
820 | case ELS_LOGO: | |
821 | fh = fc_frame_header_get(fp); | |
822 | if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) | |
823 | recv = fc_lport_recv_logo_req; | |
824 | break; | |
825 | case ELS_RSCN: | |
826 | recv = lport->tt.disc_recv_req; | |
827 | break; | |
828 | case ELS_ECHO: | |
829 | recv = fc_lport_recv_echo_req; | |
830 | break; | |
831 | case ELS_RLIR: | |
832 | recv = fc_lport_recv_rlir_req; | |
833 | break; | |
834 | case ELS_RNID: | |
835 | recv = fc_lport_recv_rnid_req; | |
836 | break; | |
42e9a92f RL |
837 | } |
838 | ||
131203a1 | 839 | recv(sp, fp, lport); |
42e9a92f | 840 | } else { |
7414705e RL |
841 | FC_LPORT_DBG(lport, "dropping invalid frame (eof %x)\n", |
842 | fr_eof(fp)); | |
42e9a92f RL |
843 | fc_frame_free(fp); |
844 | } | |
845 | mutex_unlock(&lport->lp_mutex); | |
846 | ||
847 | /* | |
848 | * The common exch_done for all request may not be good | |
849 | * if any request requires longer hold on exhange. XXX | |
850 | */ | |
851 | lport->tt.exch_done(sp); | |
852 | } | |
853 | ||
854 | /** | |
34f42a07 | 855 | * fc_lport_reset() - Reset an lport |
42e9a92f RL |
856 | * @lport: The lport which should be reset |
857 | * | |
858 | * Locking Note: This functions should not be called with the | |
859 | * lport lock held. | |
860 | */ | |
861 | int fc_lport_reset(struct fc_lport *lport) | |
862 | { | |
f7db2c15 | 863 | cancel_delayed_work_sync(&lport->retry_work); |
42e9a92f RL |
864 | mutex_lock(&lport->lp_mutex); |
865 | fc_lport_enter_reset(lport); | |
866 | mutex_unlock(&lport->lp_mutex); | |
867 | return 0; | |
868 | } | |
869 | EXPORT_SYMBOL(fc_lport_reset); | |
870 | ||
871 | /** | |
1190d925 | 872 | * fc_lport_reset_locked() - Reset the local port |
42e9a92f RL |
873 | * @lport: Fibre Channel local port to be reset |
874 | * | |
875 | * Locking Note: The lport lock is expected to be held before calling | |
876 | * this routine. | |
877 | */ | |
1190d925 | 878 | static void fc_lport_reset_locked(struct fc_lport *lport) |
42e9a92f | 879 | { |
42e9a92f RL |
880 | if (lport->dns_rp) |
881 | lport->tt.rport_logoff(lport->dns_rp); | |
882 | ||
48f00902 | 883 | lport->ptp_rp = NULL; |
42e9a92f RL |
884 | |
885 | lport->tt.disc_stop(lport); | |
886 | ||
1f6ff364 | 887 | lport->tt.exch_mgr_reset(lport, 0, 0); |
42e9a92f RL |
888 | fc_host_fabric_name(lport->host) = 0; |
889 | fc_host_port_id(lport->host) = 0; | |
1190d925 | 890 | } |
42e9a92f | 891 | |
1190d925 JE |
892 | /** |
893 | * fc_lport_enter_reset() - Reset the local port | |
894 | * @lport: Fibre Channel local port to be reset | |
895 | * | |
896 | * Locking Note: The lport lock is expected to be held before calling | |
897 | * this routine. | |
898 | */ | |
899 | static void fc_lport_enter_reset(struct fc_lport *lport) | |
900 | { | |
901 | FC_LPORT_DBG(lport, "Entered RESET state from %s state\n", | |
902 | fc_lport_state(lport)); | |
903 | ||
8faecddb CL |
904 | if (lport->vport) { |
905 | if (lport->link_up) | |
906 | fc_vport_set_state(lport->vport, FC_VPORT_INITIALIZING); | |
907 | else | |
908 | fc_vport_set_state(lport->vport, FC_VPORT_LINKDOWN); | |
909 | } | |
1190d925 | 910 | fc_lport_state_enter(lport, LPORT_ST_RESET); |
8faecddb | 911 | fc_vports_linkchange(lport); |
1190d925 | 912 | fc_lport_reset_locked(lport); |
bc0e17f6 | 913 | if (lport->link_up) |
42e9a92f RL |
914 | fc_lport_enter_flogi(lport); |
915 | } | |
916 | ||
1190d925 JE |
917 | /** |
918 | * fc_lport_enter_disabled() - disable the local port | |
919 | * @lport: Fibre Channel local port to be reset | |
920 | * | |
921 | * Locking Note: The lport lock is expected to be held before calling | |
922 | * this routine. | |
923 | */ | |
924 | static void fc_lport_enter_disabled(struct fc_lport *lport) | |
925 | { | |
926 | FC_LPORT_DBG(lport, "Entered disabled state from %s state\n", | |
927 | fc_lport_state(lport)); | |
928 | ||
929 | fc_lport_state_enter(lport, LPORT_ST_DISABLED); | |
8faecddb | 930 | fc_vports_linkchange(lport); |
1190d925 JE |
931 | fc_lport_reset_locked(lport); |
932 | } | |
933 | ||
42e9a92f | 934 | /** |
34f42a07 | 935 | * fc_lport_error() - Handler for any errors |
42e9a92f RL |
936 | * @lport: The fc_lport object |
937 | * @fp: The frame pointer | |
938 | * | |
939 | * If the error was caused by a resource allocation failure | |
940 | * then wait for half a second and retry, otherwise retry | |
941 | * after the e_d_tov time. | |
942 | */ | |
943 | static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp) | |
944 | { | |
945 | unsigned long delay = 0; | |
7414705e RL |
946 | FC_LPORT_DBG(lport, "Error %ld in state %s, retries %d\n", |
947 | PTR_ERR(fp), fc_lport_state(lport), | |
948 | lport->retry_count); | |
42e9a92f RL |
949 | |
950 | if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) { | |
951 | /* | |
952 | * Memory allocation failure, or the exchange timed out. | |
953 | * Retry after delay | |
954 | */ | |
955 | if (lport->retry_count < lport->max_retry_count) { | |
956 | lport->retry_count++; | |
957 | if (!fp) | |
958 | delay = msecs_to_jiffies(500); | |
959 | else | |
960 | delay = msecs_to_jiffies(lport->e_d_tov); | |
961 | ||
962 | schedule_delayed_work(&lport->retry_work, delay); | |
963 | } else { | |
964 | switch (lport->state) { | |
b1d9fd55 | 965 | case LPORT_ST_DISABLED: |
42e9a92f RL |
966 | case LPORT_ST_READY: |
967 | case LPORT_ST_RESET: | |
968 | case LPORT_ST_RPN_ID: | |
969 | case LPORT_ST_RFT_ID: | |
970 | case LPORT_ST_SCR: | |
971 | case LPORT_ST_DNS: | |
972 | case LPORT_ST_FLOGI: | |
973 | case LPORT_ST_LOGO: | |
974 | fc_lport_enter_reset(lport); | |
975 | break; | |
976 | } | |
977 | } | |
978 | } | |
979 | } | |
980 | ||
981 | /** | |
34f42a07 RL |
982 | * fc_lport_rft_id_resp() - Handle response to Register Fibre |
983 | * Channel Types by ID (RPN_ID) request | |
42e9a92f RL |
984 | * @sp: current sequence in RPN_ID exchange |
985 | * @fp: response frame | |
986 | * @lp_arg: Fibre Channel host port instance | |
987 | * | |
988 | * Locking Note: This function will be called without the lport lock | |
989 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
990 | * and then unlock the lport. | |
991 | */ | |
992 | static void fc_lport_rft_id_resp(struct fc_seq *sp, struct fc_frame *fp, | |
993 | void *lp_arg) | |
994 | { | |
995 | struct fc_lport *lport = lp_arg; | |
996 | struct fc_frame_header *fh; | |
997 | struct fc_ct_hdr *ct; | |
998 | ||
f657d299 JE |
999 | FC_LPORT_DBG(lport, "Received a RFT_ID %s\n", fc_els_resp_type(fp)); |
1000 | ||
42e9a92f RL |
1001 | if (fp == ERR_PTR(-FC_EX_CLOSED)) |
1002 | return; | |
1003 | ||
1004 | mutex_lock(&lport->lp_mutex); | |
1005 | ||
42e9a92f | 1006 | if (lport->state != LPORT_ST_RFT_ID) { |
7414705e RL |
1007 | FC_LPORT_DBG(lport, "Received a RFT_ID response, but in state " |
1008 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1009 | if (IS_ERR(fp)) |
1010 | goto err; | |
42e9a92f RL |
1011 | goto out; |
1012 | } | |
1013 | ||
76f6804e AJ |
1014 | if (IS_ERR(fp)) { |
1015 | fc_lport_error(lport, fp); | |
1016 | goto err; | |
1017 | } | |
1018 | ||
42e9a92f RL |
1019 | fh = fc_frame_header_get(fp); |
1020 | ct = fc_frame_payload_get(fp, sizeof(*ct)); | |
1021 | ||
1022 | if (fh && ct && fh->fh_type == FC_TYPE_CT && | |
1023 | ct->ct_fs_type == FC_FST_DIR && | |
1024 | ct->ct_fs_subtype == FC_NS_SUBTYPE && | |
1025 | ntohs(ct->ct_cmd) == FC_FS_ACC) | |
1026 | fc_lport_enter_scr(lport); | |
1027 | else | |
1028 | fc_lport_error(lport, fp); | |
1029 | out: | |
1030 | fc_frame_free(fp); | |
1031 | err: | |
1032 | mutex_unlock(&lport->lp_mutex); | |
1033 | } | |
1034 | ||
1035 | /** | |
34f42a07 RL |
1036 | * fc_lport_rpn_id_resp() - Handle response to Register Port |
1037 | * Name by ID (RPN_ID) request | |
42e9a92f RL |
1038 | * @sp: current sequence in RPN_ID exchange |
1039 | * @fp: response frame | |
1040 | * @lp_arg: Fibre Channel host port instance | |
1041 | * | |
1042 | * Locking Note: This function will be called without the lport lock | |
1043 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1044 | * and then unlock the lport. | |
1045 | */ | |
1046 | static void fc_lport_rpn_id_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1047 | void *lp_arg) | |
1048 | { | |
1049 | struct fc_lport *lport = lp_arg; | |
1050 | struct fc_frame_header *fh; | |
1051 | struct fc_ct_hdr *ct; | |
1052 | ||
f657d299 JE |
1053 | FC_LPORT_DBG(lport, "Received a RPN_ID %s\n", fc_els_resp_type(fp)); |
1054 | ||
42e9a92f RL |
1055 | if (fp == ERR_PTR(-FC_EX_CLOSED)) |
1056 | return; | |
1057 | ||
1058 | mutex_lock(&lport->lp_mutex); | |
1059 | ||
42e9a92f | 1060 | if (lport->state != LPORT_ST_RPN_ID) { |
7414705e RL |
1061 | FC_LPORT_DBG(lport, "Received a RPN_ID response, but in state " |
1062 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1063 | if (IS_ERR(fp)) |
1064 | goto err; | |
42e9a92f RL |
1065 | goto out; |
1066 | } | |
1067 | ||
76f6804e AJ |
1068 | if (IS_ERR(fp)) { |
1069 | fc_lport_error(lport, fp); | |
1070 | goto err; | |
1071 | } | |
1072 | ||
42e9a92f RL |
1073 | fh = fc_frame_header_get(fp); |
1074 | ct = fc_frame_payload_get(fp, sizeof(*ct)); | |
1075 | if (fh && ct && fh->fh_type == FC_TYPE_CT && | |
1076 | ct->ct_fs_type == FC_FST_DIR && | |
1077 | ct->ct_fs_subtype == FC_NS_SUBTYPE && | |
1078 | ntohs(ct->ct_cmd) == FC_FS_ACC) | |
1079 | fc_lport_enter_rft_id(lport); | |
1080 | else | |
1081 | fc_lport_error(lport, fp); | |
1082 | ||
1083 | out: | |
1084 | fc_frame_free(fp); | |
1085 | err: | |
1086 | mutex_unlock(&lport->lp_mutex); | |
1087 | } | |
1088 | ||
1089 | /** | |
34f42a07 | 1090 | * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request |
42e9a92f RL |
1091 | * @sp: current sequence in SCR exchange |
1092 | * @fp: response frame | |
1093 | * @lp_arg: Fibre Channel lport port instance that sent the registration request | |
1094 | * | |
1095 | * Locking Note: This function will be called without the lport lock | |
1096 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1097 | * and then unlock the lport. | |
1098 | */ | |
1099 | static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1100 | void *lp_arg) | |
1101 | { | |
1102 | struct fc_lport *lport = lp_arg; | |
1103 | u8 op; | |
1104 | ||
f657d299 JE |
1105 | FC_LPORT_DBG(lport, "Received a SCR %s\n", fc_els_resp_type(fp)); |
1106 | ||
42e9a92f RL |
1107 | if (fp == ERR_PTR(-FC_EX_CLOSED)) |
1108 | return; | |
1109 | ||
1110 | mutex_lock(&lport->lp_mutex); | |
1111 | ||
42e9a92f | 1112 | if (lport->state != LPORT_ST_SCR) { |
7414705e RL |
1113 | FC_LPORT_DBG(lport, "Received a SCR response, but in state " |
1114 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1115 | if (IS_ERR(fp)) |
1116 | goto err; | |
42e9a92f RL |
1117 | goto out; |
1118 | } | |
1119 | ||
76f6804e AJ |
1120 | if (IS_ERR(fp)) { |
1121 | fc_lport_error(lport, fp); | |
1122 | goto err; | |
1123 | } | |
1124 | ||
42e9a92f RL |
1125 | op = fc_frame_payload_op(fp); |
1126 | if (op == ELS_LS_ACC) | |
1127 | fc_lport_enter_ready(lport); | |
1128 | else | |
1129 | fc_lport_error(lport, fp); | |
1130 | ||
1131 | out: | |
1132 | fc_frame_free(fp); | |
1133 | err: | |
1134 | mutex_unlock(&lport->lp_mutex); | |
1135 | } | |
1136 | ||
1137 | /** | |
34f42a07 | 1138 | * fc_lport_enter_scr() - Send a State Change Register (SCR) request |
42e9a92f RL |
1139 | * @lport: Fibre Channel local port to register for state changes |
1140 | * | |
1141 | * Locking Note: The lport lock is expected to be held before calling | |
1142 | * this routine. | |
1143 | */ | |
1144 | static void fc_lport_enter_scr(struct fc_lport *lport) | |
1145 | { | |
1146 | struct fc_frame *fp; | |
1147 | ||
7414705e RL |
1148 | FC_LPORT_DBG(lport, "Entered SCR state from %s state\n", |
1149 | fc_lport_state(lport)); | |
42e9a92f RL |
1150 | |
1151 | fc_lport_state_enter(lport, LPORT_ST_SCR); | |
1152 | ||
1153 | fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr)); | |
1154 | if (!fp) { | |
1155 | fc_lport_error(lport, fp); | |
1156 | return; | |
1157 | } | |
1158 | ||
a46f327a | 1159 | if (!lport->tt.elsct_send(lport, FC_FID_FCTRL, fp, ELS_SCR, |
42e9a92f | 1160 | fc_lport_scr_resp, lport, lport->e_d_tov)) |
8f550f93 | 1161 | fc_lport_error(lport, NULL); |
42e9a92f RL |
1162 | } |
1163 | ||
1164 | /** | |
34f42a07 | 1165 | * fc_lport_enter_rft_id() - Register FC4-types with the name server |
42e9a92f RL |
1166 | * @lport: Fibre Channel local port to register |
1167 | * | |
1168 | * Locking Note: The lport lock is expected to be held before calling | |
1169 | * this routine. | |
1170 | */ | |
1171 | static void fc_lport_enter_rft_id(struct fc_lport *lport) | |
1172 | { | |
1173 | struct fc_frame *fp; | |
1174 | struct fc_ns_fts *lps; | |
1175 | int i; | |
1176 | ||
7414705e RL |
1177 | FC_LPORT_DBG(lport, "Entered RFT_ID state from %s state\n", |
1178 | fc_lport_state(lport)); | |
42e9a92f RL |
1179 | |
1180 | fc_lport_state_enter(lport, LPORT_ST_RFT_ID); | |
1181 | ||
1182 | lps = &lport->fcts; | |
1183 | i = sizeof(lps->ff_type_map) / sizeof(lps->ff_type_map[0]); | |
1184 | while (--i >= 0) | |
1185 | if (ntohl(lps->ff_type_map[i]) != 0) | |
1186 | break; | |
1187 | if (i < 0) { | |
1188 | /* nothing to register, move on to SCR */ | |
1189 | fc_lport_enter_scr(lport); | |
1190 | return; | |
1191 | } | |
1192 | ||
1193 | fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + | |
1194 | sizeof(struct fc_ns_rft)); | |
1195 | if (!fp) { | |
1196 | fc_lport_error(lport, fp); | |
1197 | return; | |
1198 | } | |
1199 | ||
a46f327a | 1200 | if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RFT_ID, |
42e9a92f RL |
1201 | fc_lport_rft_id_resp, |
1202 | lport, lport->e_d_tov)) | |
1203 | fc_lport_error(lport, fp); | |
1204 | } | |
1205 | ||
1206 | /** | |
34f42a07 | 1207 | * fc_rport_enter_rft_id() - Register port name with the name server |
42e9a92f RL |
1208 | * @lport: Fibre Channel local port to register |
1209 | * | |
1210 | * Locking Note: The lport lock is expected to be held before calling | |
1211 | * this routine. | |
1212 | */ | |
1213 | static void fc_lport_enter_rpn_id(struct fc_lport *lport) | |
1214 | { | |
1215 | struct fc_frame *fp; | |
1216 | ||
7414705e RL |
1217 | FC_LPORT_DBG(lport, "Entered RPN_ID state from %s state\n", |
1218 | fc_lport_state(lport)); | |
42e9a92f RL |
1219 | |
1220 | fc_lport_state_enter(lport, LPORT_ST_RPN_ID); | |
1221 | ||
1222 | fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + | |
1223 | sizeof(struct fc_ns_rn_id)); | |
1224 | if (!fp) { | |
1225 | fc_lport_error(lport, fp); | |
1226 | return; | |
1227 | } | |
1228 | ||
a46f327a | 1229 | if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RPN_ID, |
42e9a92f RL |
1230 | fc_lport_rpn_id_resp, |
1231 | lport, lport->e_d_tov)) | |
8f550f93 | 1232 | fc_lport_error(lport, NULL); |
42e9a92f RL |
1233 | } |
1234 | ||
1235 | static struct fc_rport_operations fc_lport_rport_ops = { | |
1236 | .event_callback = fc_lport_rport_callback, | |
1237 | }; | |
1238 | ||
1239 | /** | |
34f42a07 | 1240 | * fc_rport_enter_dns() - Create a rport to the name server |
42e9a92f RL |
1241 | * @lport: Fibre Channel local port requesting a rport for the name server |
1242 | * | |
1243 | * Locking Note: The lport lock is expected to be held before calling | |
1244 | * this routine. | |
1245 | */ | |
1246 | static void fc_lport_enter_dns(struct fc_lport *lport) | |
1247 | { | |
ab28f1fd | 1248 | struct fc_rport_priv *rdata; |
42e9a92f | 1249 | |
7414705e RL |
1250 | FC_LPORT_DBG(lport, "Entered DNS state from %s state\n", |
1251 | fc_lport_state(lport)); | |
42e9a92f RL |
1252 | |
1253 | fc_lport_state_enter(lport, LPORT_ST_DNS); | |
1254 | ||
48f00902 | 1255 | mutex_lock(&lport->disc.disc_mutex); |
9737e6a7 | 1256 | rdata = lport->tt.rport_create(lport, FC_FID_DIR_SERV); |
48f00902 | 1257 | mutex_unlock(&lport->disc.disc_mutex); |
9fb9d328 | 1258 | if (!rdata) |
42e9a92f RL |
1259 | goto err; |
1260 | ||
42e9a92f | 1261 | rdata->ops = &fc_lport_rport_ops; |
9fb9d328 | 1262 | lport->tt.rport_login(rdata); |
42e9a92f RL |
1263 | return; |
1264 | ||
1265 | err: | |
1266 | fc_lport_error(lport, NULL); | |
1267 | } | |
1268 | ||
1269 | /** | |
34f42a07 | 1270 | * fc_lport_timeout() - Handler for the retry_work timer. |
42e9a92f RL |
1271 | * @work: The work struct of the fc_lport |
1272 | */ | |
1273 | static void fc_lport_timeout(struct work_struct *work) | |
1274 | { | |
1275 | struct fc_lport *lport = | |
1276 | container_of(work, struct fc_lport, | |
1277 | retry_work.work); | |
1278 | ||
1279 | mutex_lock(&lport->lp_mutex); | |
1280 | ||
1281 | switch (lport->state) { | |
b1d9fd55 | 1282 | case LPORT_ST_DISABLED: |
22655ac2 JE |
1283 | WARN_ON(1); |
1284 | break; | |
42e9a92f | 1285 | case LPORT_ST_READY: |
42e9a92f RL |
1286 | WARN_ON(1); |
1287 | break; | |
22655ac2 JE |
1288 | case LPORT_ST_RESET: |
1289 | break; | |
42e9a92f RL |
1290 | case LPORT_ST_FLOGI: |
1291 | fc_lport_enter_flogi(lport); | |
1292 | break; | |
1293 | case LPORT_ST_DNS: | |
1294 | fc_lport_enter_dns(lport); | |
1295 | break; | |
1296 | case LPORT_ST_RPN_ID: | |
1297 | fc_lport_enter_rpn_id(lport); | |
1298 | break; | |
1299 | case LPORT_ST_RFT_ID: | |
1300 | fc_lport_enter_rft_id(lport); | |
1301 | break; | |
1302 | case LPORT_ST_SCR: | |
1303 | fc_lport_enter_scr(lport); | |
1304 | break; | |
1305 | case LPORT_ST_LOGO: | |
1306 | fc_lport_enter_logo(lport); | |
1307 | break; | |
1308 | } | |
1309 | ||
1310 | mutex_unlock(&lport->lp_mutex); | |
1311 | } | |
1312 | ||
1313 | /** | |
34f42a07 | 1314 | * fc_lport_logo_resp() - Handle response to LOGO request |
42e9a92f RL |
1315 | * @sp: current sequence in LOGO exchange |
1316 | * @fp: response frame | |
1317 | * @lp_arg: Fibre Channel lport port instance that sent the LOGO request | |
1318 | * | |
1319 | * Locking Note: This function will be called without the lport lock | |
1320 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1321 | * and then unlock the lport. | |
1322 | */ | |
11b56188 | 1323 | void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp, |
42e9a92f RL |
1324 | void *lp_arg) |
1325 | { | |
1326 | struct fc_lport *lport = lp_arg; | |
1327 | u8 op; | |
1328 | ||
f657d299 JE |
1329 | FC_LPORT_DBG(lport, "Received a LOGO %s\n", fc_els_resp_type(fp)); |
1330 | ||
42e9a92f RL |
1331 | if (fp == ERR_PTR(-FC_EX_CLOSED)) |
1332 | return; | |
1333 | ||
1334 | mutex_lock(&lport->lp_mutex); | |
1335 | ||
42e9a92f | 1336 | if (lport->state != LPORT_ST_LOGO) { |
7414705e RL |
1337 | FC_LPORT_DBG(lport, "Received a LOGO response, but in state " |
1338 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1339 | if (IS_ERR(fp)) |
1340 | goto err; | |
42e9a92f RL |
1341 | goto out; |
1342 | } | |
1343 | ||
76f6804e AJ |
1344 | if (IS_ERR(fp)) { |
1345 | fc_lport_error(lport, fp); | |
1346 | goto err; | |
1347 | } | |
1348 | ||
42e9a92f RL |
1349 | op = fc_frame_payload_op(fp); |
1350 | if (op == ELS_LS_ACC) | |
1190d925 | 1351 | fc_lport_enter_disabled(lport); |
42e9a92f RL |
1352 | else |
1353 | fc_lport_error(lport, fp); | |
1354 | ||
1355 | out: | |
1356 | fc_frame_free(fp); | |
1357 | err: | |
1358 | mutex_unlock(&lport->lp_mutex); | |
1359 | } | |
11b56188 | 1360 | EXPORT_SYMBOL(fc_lport_logo_resp); |
42e9a92f RL |
1361 | |
1362 | /** | |
34f42a07 | 1363 | * fc_rport_enter_logo() - Logout of the fabric |
42e9a92f RL |
1364 | * @lport: Fibre Channel local port to be logged out |
1365 | * | |
1366 | * Locking Note: The lport lock is expected to be held before calling | |
1367 | * this routine. | |
1368 | */ | |
1369 | static void fc_lport_enter_logo(struct fc_lport *lport) | |
1370 | { | |
1371 | struct fc_frame *fp; | |
1372 | struct fc_els_logo *logo; | |
1373 | ||
7414705e RL |
1374 | FC_LPORT_DBG(lport, "Entered LOGO state from %s state\n", |
1375 | fc_lport_state(lport)); | |
42e9a92f RL |
1376 | |
1377 | fc_lport_state_enter(lport, LPORT_ST_LOGO); | |
8faecddb | 1378 | fc_vports_linkchange(lport); |
42e9a92f | 1379 | |
42e9a92f RL |
1380 | fp = fc_frame_alloc(lport, sizeof(*logo)); |
1381 | if (!fp) { | |
1382 | fc_lport_error(lport, fp); | |
1383 | return; | |
1384 | } | |
1385 | ||
a46f327a JE |
1386 | if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, ELS_LOGO, |
1387 | fc_lport_logo_resp, lport, lport->e_d_tov)) | |
8f550f93 | 1388 | fc_lport_error(lport, NULL); |
42e9a92f RL |
1389 | } |
1390 | ||
1391 | /** | |
34f42a07 | 1392 | * fc_lport_flogi_resp() - Handle response to FLOGI request |
42e9a92f RL |
1393 | * @sp: current sequence in FLOGI exchange |
1394 | * @fp: response frame | |
1395 | * @lp_arg: Fibre Channel lport port instance that sent the FLOGI request | |
1396 | * | |
1397 | * Locking Note: This function will be called without the lport lock | |
1398 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1399 | * and then unlock the lport. | |
1400 | */ | |
11b56188 | 1401 | void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, |
42e9a92f RL |
1402 | void *lp_arg) |
1403 | { | |
1404 | struct fc_lport *lport = lp_arg; | |
1405 | struct fc_frame_header *fh; | |
1406 | struct fc_els_flogi *flp; | |
1407 | u32 did; | |
1408 | u16 csp_flags; | |
1409 | unsigned int r_a_tov; | |
1410 | unsigned int e_d_tov; | |
1411 | u16 mfs; | |
1412 | ||
f657d299 JE |
1413 | FC_LPORT_DBG(lport, "Received a FLOGI %s\n", fc_els_resp_type(fp)); |
1414 | ||
42e9a92f RL |
1415 | if (fp == ERR_PTR(-FC_EX_CLOSED)) |
1416 | return; | |
1417 | ||
1418 | mutex_lock(&lport->lp_mutex); | |
1419 | ||
42e9a92f | 1420 | if (lport->state != LPORT_ST_FLOGI) { |
7414705e RL |
1421 | FC_LPORT_DBG(lport, "Received a FLOGI response, but in state " |
1422 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1423 | if (IS_ERR(fp)) |
1424 | goto err; | |
42e9a92f RL |
1425 | goto out; |
1426 | } | |
1427 | ||
76f6804e AJ |
1428 | if (IS_ERR(fp)) { |
1429 | fc_lport_error(lport, fp); | |
1430 | goto err; | |
1431 | } | |
1432 | ||
42e9a92f RL |
1433 | fh = fc_frame_header_get(fp); |
1434 | did = ntoh24(fh->fh_d_id); | |
1435 | if (fc_frame_payload_op(fp) == ELS_LS_ACC && did != 0) { | |
1436 | ||
7414705e RL |
1437 | printk(KERN_INFO "libfc: Assigned FID (%6x) in FLOGI response\n", |
1438 | did); | |
42e9a92f RL |
1439 | fc_host_port_id(lport->host) = did; |
1440 | ||
1441 | flp = fc_frame_payload_get(fp, sizeof(*flp)); | |
1442 | if (flp) { | |
1443 | mfs = ntohs(flp->fl_csp.sp_bb_data) & | |
1444 | FC_SP_BB_DATA_MASK; | |
1445 | if (mfs >= FC_SP_MIN_MAX_PAYLOAD && | |
1446 | mfs < lport->mfs) | |
1447 | lport->mfs = mfs; | |
1448 | csp_flags = ntohs(flp->fl_csp.sp_features); | |
1449 | r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov); | |
1450 | e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov); | |
1451 | if (csp_flags & FC_SP_FT_EDTR) | |
1452 | e_d_tov /= 1000000; | |
db36c06c CL |
1453 | |
1454 | lport->npiv_enabled = !!(csp_flags & FC_SP_FT_NPIV_ACC); | |
1455 | ||
42e9a92f RL |
1456 | if ((csp_flags & FC_SP_FT_FPORT) == 0) { |
1457 | if (e_d_tov > lport->e_d_tov) | |
1458 | lport->e_d_tov = e_d_tov; | |
1459 | lport->r_a_tov = 2 * e_d_tov; | |
7414705e RL |
1460 | printk(KERN_INFO "libfc: Port (%6x) entered " |
1461 | "point to point mode\n", did); | |
42e9a92f RL |
1462 | fc_lport_ptp_setup(lport, ntoh24(fh->fh_s_id), |
1463 | get_unaligned_be64( | |
1464 | &flp->fl_wwpn), | |
1465 | get_unaligned_be64( | |
1466 | &flp->fl_wwnn)); | |
1467 | } else { | |
1468 | lport->e_d_tov = e_d_tov; | |
1469 | lport->r_a_tov = r_a_tov; | |
1470 | fc_host_fabric_name(lport->host) = | |
1471 | get_unaligned_be64(&flp->fl_wwnn); | |
1472 | fc_lport_enter_dns(lport); | |
1473 | } | |
1474 | } | |
42e9a92f | 1475 | } else { |
7414705e | 1476 | FC_LPORT_DBG(lport, "Bad FLOGI response\n"); |
42e9a92f RL |
1477 | } |
1478 | ||
1479 | out: | |
1480 | fc_frame_free(fp); | |
1481 | err: | |
1482 | mutex_unlock(&lport->lp_mutex); | |
1483 | } | |
11b56188 | 1484 | EXPORT_SYMBOL(fc_lport_flogi_resp); |
42e9a92f RL |
1485 | |
1486 | /** | |
34f42a07 | 1487 | * fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager |
42e9a92f RL |
1488 | * @lport: Fibre Channel local port to be logged in to the fabric |
1489 | * | |
1490 | * Locking Note: The lport lock is expected to be held before calling | |
1491 | * this routine. | |
1492 | */ | |
1493 | void fc_lport_enter_flogi(struct fc_lport *lport) | |
1494 | { | |
1495 | struct fc_frame *fp; | |
1496 | ||
7414705e RL |
1497 | FC_LPORT_DBG(lport, "Entered FLOGI state from %s state\n", |
1498 | fc_lport_state(lport)); | |
42e9a92f RL |
1499 | |
1500 | fc_lport_state_enter(lport, LPORT_ST_FLOGI); | |
1501 | ||
1502 | fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); | |
1503 | if (!fp) | |
1504 | return fc_lport_error(lport, fp); | |
1505 | ||
db36c06c CL |
1506 | if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, |
1507 | lport->vport ? ELS_FDISC : ELS_FLOGI, | |
42e9a92f | 1508 | fc_lport_flogi_resp, lport, lport->e_d_tov)) |
8f550f93 | 1509 | fc_lport_error(lport, NULL); |
42e9a92f RL |
1510 | } |
1511 | ||
1512 | /* Configure a fc_lport */ | |
1513 | int fc_lport_config(struct fc_lport *lport) | |
1514 | { | |
1515 | INIT_DELAYED_WORK(&lport->retry_work, fc_lport_timeout); | |
1516 | mutex_init(&lport->lp_mutex); | |
1517 | ||
b1d9fd55 | 1518 | fc_lport_state_enter(lport, LPORT_ST_DISABLED); |
42e9a92f RL |
1519 | |
1520 | fc_lport_add_fc4_type(lport, FC_TYPE_FCP); | |
1521 | fc_lport_add_fc4_type(lport, FC_TYPE_CT); | |
1522 | ||
1523 | return 0; | |
1524 | } | |
1525 | EXPORT_SYMBOL(fc_lport_config); | |
1526 | ||
1527 | int fc_lport_init(struct fc_lport *lport) | |
1528 | { | |
1529 | if (!lport->tt.lport_recv) | |
1530 | lport->tt.lport_recv = fc_lport_recv_req; | |
1531 | ||
1532 | if (!lport->tt.lport_reset) | |
1533 | lport->tt.lport_reset = fc_lport_reset; | |
1534 | ||
1535 | fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; | |
1536 | fc_host_node_name(lport->host) = lport->wwnn; | |
1537 | fc_host_port_name(lport->host) = lport->wwpn; | |
1538 | fc_host_supported_classes(lport->host) = FC_COS_CLASS3; | |
1539 | memset(fc_host_supported_fc4s(lport->host), 0, | |
1540 | sizeof(fc_host_supported_fc4s(lport->host))); | |
1541 | fc_host_supported_fc4s(lport->host)[2] = 1; | |
1542 | fc_host_supported_fc4s(lport->host)[7] = 1; | |
1543 | ||
1544 | /* This value is also unchanging */ | |
1545 | memset(fc_host_active_fc4s(lport->host), 0, | |
1546 | sizeof(fc_host_active_fc4s(lport->host))); | |
1547 | fc_host_active_fc4s(lport->host)[2] = 1; | |
1548 | fc_host_active_fc4s(lport->host)[7] = 1; | |
1549 | fc_host_maxframe_size(lport->host) = lport->mfs; | |
1550 | fc_host_supported_speeds(lport->host) = 0; | |
1551 | if (lport->link_supported_speeds & FC_PORTSPEED_1GBIT) | |
1552 | fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_1GBIT; | |
1553 | if (lport->link_supported_speeds & FC_PORTSPEED_10GBIT) | |
1554 | fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_10GBIT; | |
1555 | ||
1556 | return 0; | |
1557 | } | |
1558 | EXPORT_SYMBOL(fc_lport_init); |