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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 *); | |
c914f7d1 | 111 | static void fc_lport_enter_ns(struct fc_lport *, enum fc_lport_state); |
42e9a92f RL |
112 | static void fc_lport_enter_scr(struct fc_lport *); |
113 | static void fc_lport_enter_ready(struct fc_lport *); | |
114 | static void fc_lport_enter_logo(struct fc_lport *); | |
115 | ||
116 | static const char *fc_lport_state_names[] = { | |
b1d9fd55 | 117 | [LPORT_ST_DISABLED] = "disabled", |
42e9a92f RL |
118 | [LPORT_ST_FLOGI] = "FLOGI", |
119 | [LPORT_ST_DNS] = "dNS", | |
c9c7bd7a | 120 | [LPORT_ST_RNN_ID] = "RNN_ID", |
5baa17c3 | 121 | [LPORT_ST_RSNN_NN] = "RSNN_NN", |
c9866a54 | 122 | [LPORT_ST_RSPN_ID] = "RSPN_ID", |
42e9a92f RL |
123 | [LPORT_ST_RFT_ID] = "RFT_ID", |
124 | [LPORT_ST_SCR] = "SCR", | |
125 | [LPORT_ST_READY] = "Ready", | |
126 | [LPORT_ST_LOGO] = "LOGO", | |
127 | [LPORT_ST_RESET] = "reset", | |
128 | }; | |
129 | ||
130 | static int fc_frame_drop(struct fc_lport *lport, struct fc_frame *fp) | |
131 | { | |
132 | fc_frame_free(fp); | |
133 | return 0; | |
134 | } | |
135 | ||
136 | /** | |
34f42a07 | 137 | * fc_lport_rport_callback() - Event handler for rport events |
42e9a92f | 138 | * @lport: The lport which is receiving the event |
9fb9d328 | 139 | * @rdata: private remote port data |
42e9a92f RL |
140 | * @event: The event that occured |
141 | * | |
142 | * Locking Note: The rport lock should not be held when calling | |
143 | * this function. | |
144 | */ | |
145 | static void fc_lport_rport_callback(struct fc_lport *lport, | |
9fb9d328 | 146 | struct fc_rport_priv *rdata, |
42e9a92f RL |
147 | enum fc_rport_event event) |
148 | { | |
7414705e | 149 | FC_LPORT_DBG(lport, "Received a %d event for port (%6x)\n", event, |
f211fa51 | 150 | rdata->ids.port_id); |
42e9a92f | 151 | |
b5cbf083 | 152 | mutex_lock(&lport->lp_mutex); |
42e9a92f | 153 | switch (event) { |
4c0f62b5 | 154 | case RPORT_EV_READY: |
b5cbf083 JE |
155 | if (lport->state == LPORT_ST_DNS) { |
156 | lport->dns_rp = rdata; | |
c914f7d1 | 157 | fc_lport_enter_ns(lport, LPORT_ST_RNN_ID); |
b5cbf083 JE |
158 | } else { |
159 | FC_LPORT_DBG(lport, "Received an READY event " | |
160 | "on port (%6x) for the directory " | |
161 | "server, but the lport is not " | |
162 | "in the DNS state, it's in the " | |
163 | "%d state", rdata->ids.port_id, | |
164 | lport->state); | |
165 | lport->tt.rport_logoff(rdata); | |
166 | } | |
42e9a92f RL |
167 | break; |
168 | case RPORT_EV_LOGO: | |
169 | case RPORT_EV_FAILED: | |
170 | case RPORT_EV_STOP: | |
b5cbf083 | 171 | lport->dns_rp = NULL; |
42e9a92f RL |
172 | break; |
173 | case RPORT_EV_NONE: | |
174 | break; | |
175 | } | |
b5cbf083 | 176 | mutex_unlock(&lport->lp_mutex); |
42e9a92f RL |
177 | } |
178 | ||
179 | /** | |
34f42a07 | 180 | * fc_lport_state() - Return a string which represents the lport's state |
42e9a92f RL |
181 | * @lport: The lport whose state is to converted to a string |
182 | */ | |
183 | static const char *fc_lport_state(struct fc_lport *lport) | |
184 | { | |
185 | const char *cp; | |
186 | ||
187 | cp = fc_lport_state_names[lport->state]; | |
188 | if (!cp) | |
189 | cp = "unknown"; | |
190 | return cp; | |
191 | } | |
192 | ||
193 | /** | |
34f42a07 | 194 | * fc_lport_ptp_setup() - Create an rport for point-to-point mode |
42e9a92f RL |
195 | * @lport: The lport to attach the ptp rport to |
196 | * @fid: The FID of the ptp rport | |
197 | * @remote_wwpn: The WWPN of the ptp rport | |
198 | * @remote_wwnn: The WWNN of the ptp rport | |
199 | */ | |
200 | static void fc_lport_ptp_setup(struct fc_lport *lport, | |
201 | u32 remote_fid, u64 remote_wwpn, | |
202 | u64 remote_wwnn) | |
203 | { | |
48f00902 JE |
204 | mutex_lock(&lport->disc.disc_mutex); |
205 | if (lport->ptp_rp) | |
42e9a92f | 206 | lport->tt.rport_logoff(lport->ptp_rp); |
9737e6a7 RL |
207 | lport->ptp_rp = lport->tt.rport_create(lport, remote_fid); |
208 | lport->ptp_rp->ids.port_name = remote_wwpn; | |
209 | lport->ptp_rp->ids.node_name = remote_wwnn; | |
48f00902 | 210 | mutex_unlock(&lport->disc.disc_mutex); |
42e9a92f RL |
211 | |
212 | lport->tt.rport_login(lport->ptp_rp); | |
213 | ||
214 | fc_lport_enter_ready(lport); | |
215 | } | |
216 | ||
217 | void fc_get_host_port_type(struct Scsi_Host *shost) | |
218 | { | |
219 | /* TODO - currently just NPORT */ | |
220 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
221 | } | |
222 | EXPORT_SYMBOL(fc_get_host_port_type); | |
223 | ||
224 | void fc_get_host_port_state(struct Scsi_Host *shost) | |
225 | { | |
226 | struct fc_lport *lp = shost_priv(shost); | |
227 | ||
8faecddb CL |
228 | mutex_lock(&lp->lp_mutex); |
229 | if (!lp->link_up) | |
230 | fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; | |
42e9a92f | 231 | else |
8faecddb CL |
232 | switch (lp->state) { |
233 | case LPORT_ST_READY: | |
234 | fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; | |
235 | break; | |
236 | default: | |
237 | fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; | |
238 | } | |
239 | mutex_unlock(&lp->lp_mutex); | |
42e9a92f RL |
240 | } |
241 | EXPORT_SYMBOL(fc_get_host_port_state); | |
242 | ||
243 | void fc_get_host_speed(struct Scsi_Host *shost) | |
244 | { | |
245 | struct fc_lport *lport = shost_priv(shost); | |
246 | ||
247 | fc_host_speed(shost) = lport->link_speed; | |
248 | } | |
249 | EXPORT_SYMBOL(fc_get_host_speed); | |
250 | ||
251 | struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost) | |
252 | { | |
42e9a92f RL |
253 | struct fc_host_statistics *fcoe_stats; |
254 | struct fc_lport *lp = shost_priv(shost); | |
255 | struct timespec v0, v1; | |
582b45bc | 256 | unsigned int cpu; |
42e9a92f RL |
257 | |
258 | fcoe_stats = &lp->host_stats; | |
259 | memset(fcoe_stats, 0, sizeof(struct fc_host_statistics)); | |
260 | ||
261 | jiffies_to_timespec(jiffies, &v0); | |
262 | jiffies_to_timespec(lp->boot_time, &v1); | |
263 | fcoe_stats->seconds_since_last_reset = (v0.tv_sec - v1.tv_sec); | |
264 | ||
582b45bc RL |
265 | for_each_possible_cpu(cpu) { |
266 | struct fcoe_dev_stats *stats; | |
267 | ||
268 | stats = per_cpu_ptr(lp->dev_stats, cpu); | |
269 | ||
42e9a92f RL |
270 | fcoe_stats->tx_frames += stats->TxFrames; |
271 | fcoe_stats->tx_words += stats->TxWords; | |
272 | fcoe_stats->rx_frames += stats->RxFrames; | |
273 | fcoe_stats->rx_words += stats->RxWords; | |
274 | fcoe_stats->error_frames += stats->ErrorFrames; | |
275 | fcoe_stats->invalid_crc_count += stats->InvalidCRCCount; | |
276 | fcoe_stats->fcp_input_requests += stats->InputRequests; | |
277 | fcoe_stats->fcp_output_requests += stats->OutputRequests; | |
278 | fcoe_stats->fcp_control_requests += stats->ControlRequests; | |
279 | fcoe_stats->fcp_input_megabytes += stats->InputMegabytes; | |
280 | fcoe_stats->fcp_output_megabytes += stats->OutputMegabytes; | |
281 | fcoe_stats->link_failure_count += stats->LinkFailureCount; | |
282 | } | |
283 | fcoe_stats->lip_count = -1; | |
284 | fcoe_stats->nos_count = -1; | |
285 | fcoe_stats->loss_of_sync_count = -1; | |
286 | fcoe_stats->loss_of_signal_count = -1; | |
287 | fcoe_stats->prim_seq_protocol_err_count = -1; | |
288 | fcoe_stats->dumped_frames = -1; | |
289 | return fcoe_stats; | |
290 | } | |
291 | EXPORT_SYMBOL(fc_get_host_stats); | |
292 | ||
293 | /* | |
294 | * Fill in FLOGI command for request. | |
295 | */ | |
296 | static void | |
297 | fc_lport_flogi_fill(struct fc_lport *lport, struct fc_els_flogi *flogi, | |
298 | unsigned int op) | |
299 | { | |
300 | struct fc_els_csp *sp; | |
301 | struct fc_els_cssp *cp; | |
302 | ||
303 | memset(flogi, 0, sizeof(*flogi)); | |
304 | flogi->fl_cmd = (u8) op; | |
305 | put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn); | |
306 | put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn); | |
307 | sp = &flogi->fl_csp; | |
308 | sp->sp_hi_ver = 0x20; | |
309 | sp->sp_lo_ver = 0x20; | |
310 | sp->sp_bb_cred = htons(10); /* this gets set by gateway */ | |
311 | sp->sp_bb_data = htons((u16) lport->mfs); | |
312 | cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */ | |
313 | cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ); | |
314 | if (op != ELS_FLOGI) { | |
315 | sp->sp_features = htons(FC_SP_FT_CIRO); | |
316 | sp->sp_tot_seq = htons(255); /* seq. we accept */ | |
317 | sp->sp_rel_off = htons(0x1f); | |
318 | sp->sp_e_d_tov = htonl(lport->e_d_tov); | |
319 | ||
320 | cp->cp_rdfs = htons((u16) lport->mfs); | |
321 | cp->cp_con_seq = htons(255); | |
322 | cp->cp_open_seq = 1; | |
323 | } | |
324 | } | |
325 | ||
326 | /* | |
327 | * Add a supported FC-4 type. | |
328 | */ | |
329 | static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type) | |
330 | { | |
331 | __be32 *mp; | |
332 | ||
333 | mp = &lport->fcts.ff_type_map[type / FC_NS_BPW]; | |
334 | *mp = htonl(ntohl(*mp) | 1UL << (type % FC_NS_BPW)); | |
335 | } | |
336 | ||
337 | /** | |
34f42a07 | 338 | * fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report. |
42e9a92f RL |
339 | * @lport: Fibre Channel local port recieving the RLIR |
340 | * @sp: current sequence in the RLIR exchange | |
341 | * @fp: RLIR request frame | |
342 | * | |
1b69bc06 | 343 | * Locking Note: The lport lock is expected to be held before calling |
42e9a92f RL |
344 | * this function. |
345 | */ | |
346 | static void fc_lport_recv_rlir_req(struct fc_seq *sp, struct fc_frame *fp, | |
347 | struct fc_lport *lport) | |
348 | { | |
7414705e RL |
349 | FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n", |
350 | fc_lport_state(lport)); | |
42e9a92f RL |
351 | |
352 | lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); | |
353 | fc_frame_free(fp); | |
354 | } | |
355 | ||
356 | /** | |
34f42a07 | 357 | * fc_lport_recv_echo_req() - Handle received ECHO request |
42e9a92f RL |
358 | * @lport: Fibre Channel local port recieving the ECHO |
359 | * @sp: current sequence in the ECHO exchange | |
360 | * @fp: ECHO request frame | |
361 | * | |
1b69bc06 | 362 | * Locking Note: The lport lock is expected to be held before calling |
42e9a92f RL |
363 | * this function. |
364 | */ | |
365 | static void fc_lport_recv_echo_req(struct fc_seq *sp, struct fc_frame *in_fp, | |
366 | struct fc_lport *lport) | |
367 | { | |
368 | struct fc_frame *fp; | |
369 | struct fc_exch *ep = fc_seq_exch(sp); | |
370 | unsigned int len; | |
371 | void *pp; | |
372 | void *dp; | |
373 | u32 f_ctl; | |
374 | ||
1b69bc06 | 375 | FC_LPORT_DBG(lport, "Received ECHO request while in state %s\n", |
7414705e | 376 | fc_lport_state(lport)); |
42e9a92f RL |
377 | |
378 | len = fr_len(in_fp) - sizeof(struct fc_frame_header); | |
379 | pp = fc_frame_payload_get(in_fp, len); | |
380 | ||
381 | if (len < sizeof(__be32)) | |
382 | len = sizeof(__be32); | |
383 | ||
384 | fp = fc_frame_alloc(lport, len); | |
385 | if (fp) { | |
386 | dp = fc_frame_payload_get(fp, len); | |
387 | memcpy(dp, pp, len); | |
1b69bc06 | 388 | *((__be32 *)dp) = htonl(ELS_LS_ACC << 24); |
42e9a92f RL |
389 | sp = lport->tt.seq_start_next(sp); |
390 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; | |
391 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
392 | FC_TYPE_ELS, f_ctl, 0); | |
393 | lport->tt.seq_send(lport, sp, fp); | |
394 | } | |
395 | fc_frame_free(in_fp); | |
396 | } | |
397 | ||
398 | /** | |
1b69bc06 JE |
399 | * fc_lport_recv_rnid_req() - Handle received Request Node ID data request |
400 | * @sp: The sequence in the RNID exchange | |
401 | * @fp: The RNID request frame | |
402 | * @lport: The local port recieving the RNID | |
42e9a92f | 403 | * |
1b69bc06 | 404 | * Locking Note: The lport lock is expected to be held before calling |
42e9a92f RL |
405 | * this function. |
406 | */ | |
407 | static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp, | |
408 | struct fc_lport *lport) | |
409 | { | |
410 | struct fc_frame *fp; | |
411 | struct fc_exch *ep = fc_seq_exch(sp); | |
412 | struct fc_els_rnid *req; | |
413 | struct { | |
414 | struct fc_els_rnid_resp rnid; | |
415 | struct fc_els_rnid_cid cid; | |
416 | struct fc_els_rnid_gen gen; | |
417 | } *rp; | |
418 | struct fc_seq_els_data rjt_data; | |
419 | u8 fmt; | |
420 | size_t len; | |
421 | u32 f_ctl; | |
422 | ||
7414705e RL |
423 | FC_LPORT_DBG(lport, "Received RNID request while in state %s\n", |
424 | fc_lport_state(lport)); | |
42e9a92f RL |
425 | |
426 | req = fc_frame_payload_get(in_fp, sizeof(*req)); | |
427 | if (!req) { | |
428 | rjt_data.fp = NULL; | |
429 | rjt_data.reason = ELS_RJT_LOGIC; | |
430 | rjt_data.explan = ELS_EXPL_NONE; | |
431 | lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); | |
432 | } else { | |
433 | fmt = req->rnid_fmt; | |
434 | len = sizeof(*rp); | |
435 | if (fmt != ELS_RNIDF_GEN || | |
436 | ntohl(lport->rnid_gen.rnid_atype) == 0) { | |
437 | fmt = ELS_RNIDF_NONE; /* nothing to provide */ | |
438 | len -= sizeof(rp->gen); | |
439 | } | |
440 | fp = fc_frame_alloc(lport, len); | |
441 | if (fp) { | |
442 | rp = fc_frame_payload_get(fp, len); | |
443 | memset(rp, 0, len); | |
444 | rp->rnid.rnid_cmd = ELS_LS_ACC; | |
445 | rp->rnid.rnid_fmt = fmt; | |
446 | rp->rnid.rnid_cid_len = sizeof(rp->cid); | |
447 | rp->cid.rnid_wwpn = htonll(lport->wwpn); | |
448 | rp->cid.rnid_wwnn = htonll(lport->wwnn); | |
449 | if (fmt == ELS_RNIDF_GEN) { | |
450 | rp->rnid.rnid_sid_len = sizeof(rp->gen); | |
451 | memcpy(&rp->gen, &lport->rnid_gen, | |
452 | sizeof(rp->gen)); | |
453 | } | |
454 | sp = lport->tt.seq_start_next(sp); | |
455 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; | |
456 | f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; | |
457 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
458 | FC_TYPE_ELS, f_ctl, 0); | |
459 | lport->tt.seq_send(lport, sp, fp); | |
460 | } | |
461 | } | |
462 | fc_frame_free(in_fp); | |
463 | } | |
464 | ||
42e9a92f | 465 | /** |
34f42a07 | 466 | * fc_lport_recv_logo_req() - Handle received fabric LOGO request |
42e9a92f RL |
467 | * @lport: Fibre Channel local port recieving the LOGO |
468 | * @sp: current sequence in the LOGO exchange | |
469 | * @fp: LOGO request frame | |
470 | * | |
471 | * Locking Note: The lport lock is exected to be held before calling | |
472 | * this function. | |
473 | */ | |
474 | static void fc_lport_recv_logo_req(struct fc_seq *sp, struct fc_frame *fp, | |
475 | struct fc_lport *lport) | |
476 | { | |
477 | lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); | |
478 | fc_lport_enter_reset(lport); | |
479 | fc_frame_free(fp); | |
480 | } | |
481 | ||
482 | /** | |
34f42a07 | 483 | * fc_fabric_login() - Start the lport state machine |
42e9a92f RL |
484 | * @lport: The lport that should log into the fabric |
485 | * | |
486 | * Locking Note: This function should not be called | |
487 | * with the lport lock held. | |
488 | */ | |
489 | int fc_fabric_login(struct fc_lport *lport) | |
490 | { | |
491 | int rc = -1; | |
492 | ||
493 | mutex_lock(&lport->lp_mutex); | |
b1d9fd55 | 494 | if (lport->state == LPORT_ST_DISABLED) { |
42e9a92f RL |
495 | fc_lport_enter_reset(lport); |
496 | rc = 0; | |
497 | } | |
498 | mutex_unlock(&lport->lp_mutex); | |
499 | ||
500 | return rc; | |
501 | } | |
502 | EXPORT_SYMBOL(fc_fabric_login); | |
503 | ||
504 | /** | |
8faecddb | 505 | * __fc_linkup() - Handler for transport linkup events |
42e9a92f | 506 | * @lport: The lport whose link is up |
8faecddb CL |
507 | * |
508 | * Locking: must be called with the lp_mutex held | |
42e9a92f | 509 | */ |
8faecddb | 510 | void __fc_linkup(struct fc_lport *lport) |
42e9a92f | 511 | { |
bc0e17f6 VD |
512 | if (!lport->link_up) { |
513 | lport->link_up = 1; | |
42e9a92f RL |
514 | |
515 | if (lport->state == LPORT_ST_RESET) | |
516 | fc_lport_enter_flogi(lport); | |
517 | } | |
8faecddb CL |
518 | } |
519 | ||
520 | /** | |
521 | * fc_linkup() - Handler for transport linkup events | |
522 | * @lport: The lport whose link is up | |
523 | */ | |
524 | void fc_linkup(struct fc_lport *lport) | |
525 | { | |
526 | printk(KERN_INFO "libfc: Link up on port (%6x)\n", | |
527 | fc_host_port_id(lport->host)); | |
528 | ||
529 | mutex_lock(&lport->lp_mutex); | |
530 | __fc_linkup(lport); | |
42e9a92f RL |
531 | mutex_unlock(&lport->lp_mutex); |
532 | } | |
533 | EXPORT_SYMBOL(fc_linkup); | |
534 | ||
535 | /** | |
8faecddb | 536 | * __fc_linkdown() - Handler for transport linkdown events |
42e9a92f | 537 | * @lport: The lport whose link is down |
8faecddb CL |
538 | * |
539 | * Locking: must be called with the lp_mutex held | |
42e9a92f | 540 | */ |
8faecddb | 541 | void __fc_linkdown(struct fc_lport *lport) |
42e9a92f | 542 | { |
bc0e17f6 VD |
543 | if (lport->link_up) { |
544 | lport->link_up = 0; | |
42e9a92f RL |
545 | fc_lport_enter_reset(lport); |
546 | lport->tt.fcp_cleanup(lport); | |
547 | } | |
8faecddb CL |
548 | } |
549 | ||
550 | /** | |
551 | * fc_linkdown() - Handler for transport linkdown events | |
552 | * @lport: The lport whose link is down | |
553 | */ | |
554 | void fc_linkdown(struct fc_lport *lport) | |
555 | { | |
556 | printk(KERN_INFO "libfc: Link down on port (%6x)\n", | |
557 | fc_host_port_id(lport->host)); | |
558 | ||
559 | mutex_lock(&lport->lp_mutex); | |
560 | __fc_linkdown(lport); | |
42e9a92f RL |
561 | mutex_unlock(&lport->lp_mutex); |
562 | } | |
563 | EXPORT_SYMBOL(fc_linkdown); | |
564 | ||
42e9a92f | 565 | /** |
34f42a07 | 566 | * fc_fabric_logoff() - Logout of the fabric |
42e9a92f RL |
567 | * @lport: fc_lport pointer to logoff the fabric |
568 | * | |
569 | * Return value: | |
570 | * 0 for success, -1 for failure | |
34f42a07 | 571 | */ |
42e9a92f RL |
572 | int fc_fabric_logoff(struct fc_lport *lport) |
573 | { | |
574 | lport->tt.disc_stop_final(lport); | |
575 | mutex_lock(&lport->lp_mutex); | |
a0fd2e49 AJ |
576 | if (lport->dns_rp) |
577 | lport->tt.rport_logoff(lport->dns_rp); | |
578 | mutex_unlock(&lport->lp_mutex); | |
579 | lport->tt.rport_flush_queue(); | |
580 | mutex_lock(&lport->lp_mutex); | |
42e9a92f RL |
581 | fc_lport_enter_logo(lport); |
582 | mutex_unlock(&lport->lp_mutex); | |
f7db2c15 | 583 | cancel_delayed_work_sync(&lport->retry_work); |
42e9a92f RL |
584 | return 0; |
585 | } | |
586 | EXPORT_SYMBOL(fc_fabric_logoff); | |
587 | ||
588 | /** | |
34f42a07 | 589 | * fc_lport_destroy() - unregister a fc_lport |
42e9a92f RL |
590 | * @lport: fc_lport pointer to unregister |
591 | * | |
592 | * Return value: | |
593 | * None | |
594 | * Note: | |
595 | * exit routine for fc_lport instance | |
596 | * clean-up all the allocated memory | |
597 | * and free up other system resources. | |
598 | * | |
34f42a07 | 599 | */ |
42e9a92f RL |
600 | int fc_lport_destroy(struct fc_lport *lport) |
601 | { | |
bbf15669 | 602 | mutex_lock(&lport->lp_mutex); |
b1d9fd55 | 603 | lport->state = LPORT_ST_DISABLED; |
bbf15669 | 604 | lport->link_up = 0; |
42e9a92f | 605 | lport->tt.frame_send = fc_frame_drop; |
bbf15669 AJ |
606 | mutex_unlock(&lport->lp_mutex); |
607 | ||
42e9a92f | 608 | lport->tt.fcp_abort_io(lport); |
e9ba8b42 | 609 | lport->tt.disc_stop_final(lport); |
1f6ff364 | 610 | lport->tt.exch_mgr_reset(lport, 0, 0); |
42e9a92f RL |
611 | return 0; |
612 | } | |
613 | EXPORT_SYMBOL(fc_lport_destroy); | |
614 | ||
615 | /** | |
34f42a07 | 616 | * fc_set_mfs() - sets up the mfs for the corresponding fc_lport |
42e9a92f RL |
617 | * @lport: fc_lport pointer to unregister |
618 | * @mfs: the new mfs for fc_lport | |
619 | * | |
620 | * Set mfs for the given fc_lport to the new mfs. | |
621 | * | |
622 | * Return: 0 for success | |
34f42a07 | 623 | */ |
42e9a92f RL |
624 | int fc_set_mfs(struct fc_lport *lport, u32 mfs) |
625 | { | |
626 | unsigned int old_mfs; | |
627 | int rc = -EINVAL; | |
628 | ||
629 | mutex_lock(&lport->lp_mutex); | |
630 | ||
631 | old_mfs = lport->mfs; | |
632 | ||
633 | if (mfs >= FC_MIN_MAX_FRAME) { | |
634 | mfs &= ~3; | |
635 | if (mfs > FC_MAX_FRAME) | |
636 | mfs = FC_MAX_FRAME; | |
637 | mfs -= sizeof(struct fc_frame_header); | |
638 | lport->mfs = mfs; | |
639 | rc = 0; | |
640 | } | |
641 | ||
642 | if (!rc && mfs < old_mfs) | |
643 | fc_lport_enter_reset(lport); | |
644 | ||
645 | mutex_unlock(&lport->lp_mutex); | |
646 | ||
647 | return rc; | |
648 | } | |
649 | EXPORT_SYMBOL(fc_set_mfs); | |
650 | ||
651 | /** | |
34f42a07 | 652 | * fc_lport_disc_callback() - Callback for discovery events |
42e9a92f RL |
653 | * @lport: FC local port |
654 | * @event: The discovery event | |
655 | */ | |
656 | void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event) | |
657 | { | |
658 | switch (event) { | |
659 | case DISC_EV_SUCCESS: | |
7414705e | 660 | FC_LPORT_DBG(lport, "Discovery succeeded\n"); |
42e9a92f RL |
661 | break; |
662 | case DISC_EV_FAILED: | |
7414705e RL |
663 | printk(KERN_ERR "libfc: Discovery failed for port (%6x)\n", |
664 | fc_host_port_id(lport->host)); | |
42e9a92f RL |
665 | mutex_lock(&lport->lp_mutex); |
666 | fc_lport_enter_reset(lport); | |
667 | mutex_unlock(&lport->lp_mutex); | |
668 | break; | |
669 | case DISC_EV_NONE: | |
670 | WARN_ON(1); | |
671 | break; | |
672 | } | |
673 | } | |
674 | ||
675 | /** | |
34f42a07 | 676 | * fc_rport_enter_ready() - Enter the ready state and start discovery |
42e9a92f RL |
677 | * @lport: Fibre Channel local port that is ready |
678 | * | |
679 | * Locking Note: The lport lock is expected to be held before calling | |
680 | * this routine. | |
681 | */ | |
682 | static void fc_lport_enter_ready(struct fc_lport *lport) | |
683 | { | |
7414705e RL |
684 | FC_LPORT_DBG(lport, "Entered READY from state %s\n", |
685 | fc_lport_state(lport)); | |
42e9a92f RL |
686 | |
687 | fc_lport_state_enter(lport, LPORT_ST_READY); | |
8faecddb CL |
688 | if (lport->vport) |
689 | fc_vport_set_state(lport->vport, FC_VPORT_ACTIVE); | |
690 | fc_vports_linkchange(lport); | |
42e9a92f | 691 | |
29d898e9 JE |
692 | if (!lport->ptp_rp) |
693 | lport->tt.disc_start(fc_lport_disc_callback, lport); | |
42e9a92f RL |
694 | } |
695 | ||
696 | /** | |
34f42a07 | 697 | * fc_lport_recv_flogi_req() - Receive a FLOGI request |
42e9a92f RL |
698 | * @sp_in: The sequence the FLOGI is on |
699 | * @rx_fp: The frame the FLOGI is in | |
700 | * @lport: The lport that recieved the request | |
701 | * | |
702 | * A received FLOGI request indicates a point-to-point connection. | |
703 | * Accept it with the common service parameters indicating our N port. | |
704 | * Set up to do a PLOGI if we have the higher-number WWPN. | |
705 | * | |
1b69bc06 | 706 | * Locking Note: The lport lock is expected to be held before calling |
42e9a92f RL |
707 | * this function. |
708 | */ | |
709 | static void fc_lport_recv_flogi_req(struct fc_seq *sp_in, | |
710 | struct fc_frame *rx_fp, | |
711 | struct fc_lport *lport) | |
712 | { | |
713 | struct fc_frame *fp; | |
714 | struct fc_frame_header *fh; | |
715 | struct fc_seq *sp; | |
716 | struct fc_exch *ep; | |
717 | struct fc_els_flogi *flp; | |
718 | struct fc_els_flogi *new_flp; | |
719 | u64 remote_wwpn; | |
720 | u32 remote_fid; | |
721 | u32 local_fid; | |
722 | u32 f_ctl; | |
723 | ||
7414705e RL |
724 | FC_LPORT_DBG(lport, "Received FLOGI request while in state %s\n", |
725 | fc_lport_state(lport)); | |
42e9a92f RL |
726 | |
727 | fh = fc_frame_header_get(rx_fp); | |
728 | remote_fid = ntoh24(fh->fh_s_id); | |
729 | flp = fc_frame_payload_get(rx_fp, sizeof(*flp)); | |
730 | if (!flp) | |
731 | goto out; | |
732 | remote_wwpn = get_unaligned_be64(&flp->fl_wwpn); | |
733 | if (remote_wwpn == lport->wwpn) { | |
7414705e RL |
734 | printk(KERN_WARNING "libfc: Received FLOGI from port " |
735 | "with same WWPN %llx\n", remote_wwpn); | |
42e9a92f RL |
736 | goto out; |
737 | } | |
7414705e | 738 | FC_LPORT_DBG(lport, "FLOGI from port WWPN %llx\n", remote_wwpn); |
42e9a92f RL |
739 | |
740 | /* | |
741 | * XXX what is the right thing to do for FIDs? | |
742 | * The originator might expect our S_ID to be 0xfffffe. | |
743 | * But if so, both of us could end up with the same FID. | |
744 | */ | |
745 | local_fid = FC_LOCAL_PTP_FID_LO; | |
746 | if (remote_wwpn < lport->wwpn) { | |
747 | local_fid = FC_LOCAL_PTP_FID_HI; | |
748 | if (!remote_fid || remote_fid == local_fid) | |
749 | remote_fid = FC_LOCAL_PTP_FID_LO; | |
750 | } else if (!remote_fid) { | |
751 | remote_fid = FC_LOCAL_PTP_FID_HI; | |
752 | } | |
753 | ||
754 | fc_host_port_id(lport->host) = local_fid; | |
755 | ||
756 | fp = fc_frame_alloc(lport, sizeof(*flp)); | |
757 | if (fp) { | |
758 | sp = lport->tt.seq_start_next(fr_seq(rx_fp)); | |
759 | new_flp = fc_frame_payload_get(fp, sizeof(*flp)); | |
760 | fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI); | |
761 | new_flp->fl_cmd = (u8) ELS_LS_ACC; | |
762 | ||
763 | /* | |
764 | * Send the response. If this fails, the originator should | |
765 | * repeat the sequence. | |
766 | */ | |
767 | f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; | |
768 | ep = fc_seq_exch(sp); | |
769 | fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, | |
770 | FC_TYPE_ELS, f_ctl, 0); | |
771 | lport->tt.seq_send(lport, sp, fp); | |
772 | ||
773 | } else { | |
774 | fc_lport_error(lport, fp); | |
775 | } | |
776 | fc_lport_ptp_setup(lport, remote_fid, remote_wwpn, | |
777 | get_unaligned_be64(&flp->fl_wwnn)); | |
778 | ||
42e9a92f RL |
779 | out: |
780 | sp = fr_seq(rx_fp); | |
781 | fc_frame_free(rx_fp); | |
782 | } | |
783 | ||
784 | /** | |
34f42a07 | 785 | * fc_lport_recv_req() - The generic lport request handler |
42e9a92f RL |
786 | * @lport: The lport that received the request |
787 | * @sp: The sequence the request is on | |
788 | * @fp: The frame the request is in | |
789 | * | |
790 | * This function will see if the lport handles the request or | |
791 | * if an rport should handle the request. | |
792 | * | |
793 | * Locking Note: This function should not be called with the lport | |
794 | * lock held becuase it will grab the lock. | |
795 | */ | |
796 | static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp, | |
797 | struct fc_frame *fp) | |
798 | { | |
799 | struct fc_frame_header *fh = fc_frame_header_get(fp); | |
800 | void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *); | |
42e9a92f RL |
801 | |
802 | mutex_lock(&lport->lp_mutex); | |
803 | ||
804 | /* | |
805 | * Handle special ELS cases like FLOGI, LOGO, and | |
806 | * RSCN here. These don't require a session. | |
807 | * Even if we had a session, it might not be ready. | |
808 | */ | |
e9ba8b42 JE |
809 | if (!lport->link_up) |
810 | fc_frame_free(fp); | |
811 | else if (fh->fh_type == FC_TYPE_ELS && | |
812 | fh->fh_r_ctl == FC_RCTL_ELS_REQ) { | |
42e9a92f RL |
813 | /* |
814 | * Check opcode. | |
815 | */ | |
131203a1 | 816 | recv = lport->tt.rport_recv_req; |
42e9a92f RL |
817 | switch (fc_frame_payload_op(fp)) { |
818 | case ELS_FLOGI: | |
819 | recv = fc_lport_recv_flogi_req; | |
820 | break; | |
821 | case ELS_LOGO: | |
822 | fh = fc_frame_header_get(fp); | |
823 | if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) | |
824 | recv = fc_lport_recv_logo_req; | |
825 | break; | |
826 | case ELS_RSCN: | |
827 | recv = lport->tt.disc_recv_req; | |
828 | break; | |
829 | case ELS_ECHO: | |
830 | recv = fc_lport_recv_echo_req; | |
831 | break; | |
832 | case ELS_RLIR: | |
833 | recv = fc_lport_recv_rlir_req; | |
834 | break; | |
835 | case ELS_RNID: | |
836 | recv = fc_lport_recv_rnid_req; | |
837 | break; | |
42e9a92f RL |
838 | } |
839 | ||
131203a1 | 840 | recv(sp, fp, lport); |
42e9a92f | 841 | } else { |
7414705e RL |
842 | FC_LPORT_DBG(lport, "dropping invalid frame (eof %x)\n", |
843 | fr_eof(fp)); | |
42e9a92f RL |
844 | fc_frame_free(fp); |
845 | } | |
846 | mutex_unlock(&lport->lp_mutex); | |
847 | ||
848 | /* | |
849 | * The common exch_done for all request may not be good | |
850 | * if any request requires longer hold on exhange. XXX | |
851 | */ | |
852 | lport->tt.exch_done(sp); | |
853 | } | |
854 | ||
855 | /** | |
34f42a07 | 856 | * fc_lport_reset() - Reset an lport |
42e9a92f RL |
857 | * @lport: The lport which should be reset |
858 | * | |
859 | * Locking Note: This functions should not be called with the | |
860 | * lport lock held. | |
861 | */ | |
862 | int fc_lport_reset(struct fc_lport *lport) | |
863 | { | |
f7db2c15 | 864 | cancel_delayed_work_sync(&lport->retry_work); |
42e9a92f RL |
865 | mutex_lock(&lport->lp_mutex); |
866 | fc_lport_enter_reset(lport); | |
867 | mutex_unlock(&lport->lp_mutex); | |
868 | return 0; | |
869 | } | |
870 | EXPORT_SYMBOL(fc_lport_reset); | |
871 | ||
872 | /** | |
1190d925 | 873 | * fc_lport_reset_locked() - Reset the local port |
42e9a92f RL |
874 | * @lport: Fibre Channel local port to be reset |
875 | * | |
876 | * Locking Note: The lport lock is expected to be held before calling | |
877 | * this routine. | |
878 | */ | |
1190d925 | 879 | static void fc_lport_reset_locked(struct fc_lport *lport) |
42e9a92f | 880 | { |
42e9a92f RL |
881 | if (lport->dns_rp) |
882 | lport->tt.rport_logoff(lport->dns_rp); | |
883 | ||
48f00902 | 884 | lport->ptp_rp = NULL; |
42e9a92f RL |
885 | |
886 | lport->tt.disc_stop(lport); | |
887 | ||
1f6ff364 | 888 | lport->tt.exch_mgr_reset(lport, 0, 0); |
42e9a92f RL |
889 | fc_host_fabric_name(lport->host) = 0; |
890 | fc_host_port_id(lport->host) = 0; | |
1190d925 | 891 | } |
42e9a92f | 892 | |
1190d925 JE |
893 | /** |
894 | * fc_lport_enter_reset() - Reset the local port | |
895 | * @lport: Fibre Channel local port to be reset | |
896 | * | |
897 | * Locking Note: The lport lock is expected to be held before calling | |
898 | * this routine. | |
899 | */ | |
900 | static void fc_lport_enter_reset(struct fc_lport *lport) | |
901 | { | |
902 | FC_LPORT_DBG(lport, "Entered RESET state from %s state\n", | |
903 | fc_lport_state(lport)); | |
904 | ||
8faecddb CL |
905 | if (lport->vport) { |
906 | if (lport->link_up) | |
907 | fc_vport_set_state(lport->vport, FC_VPORT_INITIALIZING); | |
908 | else | |
909 | fc_vport_set_state(lport->vport, FC_VPORT_LINKDOWN); | |
910 | } | |
1190d925 | 911 | fc_lport_state_enter(lport, LPORT_ST_RESET); |
8faecddb | 912 | fc_vports_linkchange(lport); |
1190d925 | 913 | fc_lport_reset_locked(lport); |
bc0e17f6 | 914 | if (lport->link_up) |
42e9a92f RL |
915 | fc_lport_enter_flogi(lport); |
916 | } | |
917 | ||
1190d925 JE |
918 | /** |
919 | * fc_lport_enter_disabled() - disable the local port | |
920 | * @lport: Fibre Channel local port to be reset | |
921 | * | |
922 | * Locking Note: The lport lock is expected to be held before calling | |
923 | * this routine. | |
924 | */ | |
925 | static void fc_lport_enter_disabled(struct fc_lport *lport) | |
926 | { | |
927 | FC_LPORT_DBG(lport, "Entered disabled state from %s state\n", | |
928 | fc_lport_state(lport)); | |
929 | ||
930 | fc_lport_state_enter(lport, LPORT_ST_DISABLED); | |
8faecddb | 931 | fc_vports_linkchange(lport); |
1190d925 JE |
932 | fc_lport_reset_locked(lport); |
933 | } | |
934 | ||
42e9a92f | 935 | /** |
34f42a07 | 936 | * fc_lport_error() - Handler for any errors |
42e9a92f RL |
937 | * @lport: The fc_lport object |
938 | * @fp: The frame pointer | |
939 | * | |
940 | * If the error was caused by a resource allocation failure | |
941 | * then wait for half a second and retry, otherwise retry | |
942 | * after the e_d_tov time. | |
943 | */ | |
944 | static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp) | |
945 | { | |
946 | unsigned long delay = 0; | |
7414705e RL |
947 | FC_LPORT_DBG(lport, "Error %ld in state %s, retries %d\n", |
948 | PTR_ERR(fp), fc_lport_state(lport), | |
949 | lport->retry_count); | |
42e9a92f RL |
950 | |
951 | if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) { | |
952 | /* | |
953 | * Memory allocation failure, or the exchange timed out. | |
954 | * Retry after delay | |
955 | */ | |
956 | if (lport->retry_count < lport->max_retry_count) { | |
957 | lport->retry_count++; | |
958 | if (!fp) | |
959 | delay = msecs_to_jiffies(500); | |
960 | else | |
961 | delay = msecs_to_jiffies(lport->e_d_tov); | |
962 | ||
963 | schedule_delayed_work(&lport->retry_work, delay); | |
964 | } else { | |
965 | switch (lport->state) { | |
b1d9fd55 | 966 | case LPORT_ST_DISABLED: |
42e9a92f RL |
967 | case LPORT_ST_READY: |
968 | case LPORT_ST_RESET: | |
c9c7bd7a | 969 | case LPORT_ST_RNN_ID: |
5baa17c3 | 970 | case LPORT_ST_RSNN_NN: |
c9866a54 | 971 | case LPORT_ST_RSPN_ID: |
42e9a92f RL |
972 | case LPORT_ST_RFT_ID: |
973 | case LPORT_ST_SCR: | |
974 | case LPORT_ST_DNS: | |
975 | case LPORT_ST_FLOGI: | |
976 | case LPORT_ST_LOGO: | |
977 | fc_lport_enter_reset(lport); | |
978 | break; | |
979 | } | |
980 | } | |
981 | } | |
982 | } | |
983 | ||
984 | /** | |
7cccc157 CL |
985 | * fc_lport_ns_resp() - Handle response to a name server |
986 | * registration exchange | |
987 | * @sp: current sequence in exchange | |
42e9a92f RL |
988 | * @fp: response frame |
989 | * @lp_arg: Fibre Channel host port instance | |
990 | * | |
991 | * Locking Note: This function will be called without the lport lock | |
992 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
993 | * and then unlock the lport. | |
994 | */ | |
7cccc157 CL |
995 | static void fc_lport_ns_resp(struct fc_seq *sp, struct fc_frame *fp, |
996 | void *lp_arg) | |
42e9a92f RL |
997 | { |
998 | struct fc_lport *lport = lp_arg; | |
999 | struct fc_frame_header *fh; | |
1000 | struct fc_ct_hdr *ct; | |
1001 | ||
7cccc157 | 1002 | FC_LPORT_DBG(lport, "Received a ns %s\n", fc_els_resp_type(fp)); |
f657d299 | 1003 | |
42e9a92f RL |
1004 | if (fp == ERR_PTR(-FC_EX_CLOSED)) |
1005 | return; | |
1006 | ||
1007 | mutex_lock(&lport->lp_mutex); | |
1008 | ||
7cccc157 CL |
1009 | if (lport->state < LPORT_ST_RNN_ID || lport->state > LPORT_ST_RFT_ID) { |
1010 | FC_LPORT_DBG(lport, "Received a name server response, " | |
1011 | "but in state %s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1012 | if (IS_ERR(fp)) |
1013 | goto err; | |
42e9a92f RL |
1014 | goto out; |
1015 | } | |
1016 | ||
76f6804e AJ |
1017 | if (IS_ERR(fp)) { |
1018 | fc_lport_error(lport, fp); | |
1019 | goto err; | |
1020 | } | |
1021 | ||
42e9a92f RL |
1022 | fh = fc_frame_header_get(fp); |
1023 | ct = fc_frame_payload_get(fp, sizeof(*ct)); | |
1024 | ||
1025 | if (fh && ct && fh->fh_type == FC_TYPE_CT && | |
1026 | ct->ct_fs_type == FC_FST_DIR && | |
1027 | ct->ct_fs_subtype == FC_NS_SUBTYPE && | |
1028 | ntohs(ct->ct_cmd) == FC_FS_ACC) | |
7cccc157 CL |
1029 | switch (lport->state) { |
1030 | case LPORT_ST_RNN_ID: | |
c914f7d1 | 1031 | fc_lport_enter_ns(lport, LPORT_ST_RSNN_NN); |
7cccc157 CL |
1032 | break; |
1033 | case LPORT_ST_RSNN_NN: | |
c914f7d1 | 1034 | fc_lport_enter_ns(lport, LPORT_ST_RSPN_ID); |
7cccc157 CL |
1035 | break; |
1036 | case LPORT_ST_RSPN_ID: | |
c914f7d1 | 1037 | fc_lport_enter_ns(lport, LPORT_ST_RFT_ID); |
7cccc157 CL |
1038 | break; |
1039 | case LPORT_ST_RFT_ID: | |
1040 | fc_lport_enter_scr(lport); | |
1041 | break; | |
1042 | default: | |
1043 | /* should have already been caught by state checks */ | |
1044 | break; | |
1045 | } | |
c9c7bd7a CL |
1046 | else |
1047 | fc_lport_error(lport, fp); | |
c9c7bd7a CL |
1048 | out: |
1049 | fc_frame_free(fp); | |
1050 | err: | |
1051 | mutex_unlock(&lport->lp_mutex); | |
1052 | } | |
1053 | ||
42e9a92f | 1054 | /** |
34f42a07 | 1055 | * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request |
42e9a92f RL |
1056 | * @sp: current sequence in SCR exchange |
1057 | * @fp: response frame | |
1058 | * @lp_arg: Fibre Channel lport port instance that sent the registration request | |
1059 | * | |
1060 | * Locking Note: This function will be called without the lport lock | |
1061 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1062 | * and then unlock the lport. | |
1063 | */ | |
1064 | static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp, | |
1065 | void *lp_arg) | |
1066 | { | |
1067 | struct fc_lport *lport = lp_arg; | |
1068 | u8 op; | |
1069 | ||
f657d299 JE |
1070 | FC_LPORT_DBG(lport, "Received a SCR %s\n", fc_els_resp_type(fp)); |
1071 | ||
42e9a92f RL |
1072 | if (fp == ERR_PTR(-FC_EX_CLOSED)) |
1073 | return; | |
1074 | ||
1075 | mutex_lock(&lport->lp_mutex); | |
1076 | ||
42e9a92f | 1077 | if (lport->state != LPORT_ST_SCR) { |
7414705e RL |
1078 | FC_LPORT_DBG(lport, "Received a SCR response, but in state " |
1079 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1080 | if (IS_ERR(fp)) |
1081 | goto err; | |
42e9a92f RL |
1082 | goto out; |
1083 | } | |
1084 | ||
76f6804e AJ |
1085 | if (IS_ERR(fp)) { |
1086 | fc_lport_error(lport, fp); | |
1087 | goto err; | |
1088 | } | |
1089 | ||
42e9a92f RL |
1090 | op = fc_frame_payload_op(fp); |
1091 | if (op == ELS_LS_ACC) | |
1092 | fc_lport_enter_ready(lport); | |
1093 | else | |
1094 | fc_lport_error(lport, fp); | |
1095 | ||
1096 | out: | |
1097 | fc_frame_free(fp); | |
1098 | err: | |
1099 | mutex_unlock(&lport->lp_mutex); | |
1100 | } | |
1101 | ||
1102 | /** | |
34f42a07 | 1103 | * fc_lport_enter_scr() - Send a State Change Register (SCR) request |
42e9a92f RL |
1104 | * @lport: Fibre Channel local port to register for state changes |
1105 | * | |
1106 | * Locking Note: The lport lock is expected to be held before calling | |
1107 | * this routine. | |
1108 | */ | |
1109 | static void fc_lport_enter_scr(struct fc_lport *lport) | |
1110 | { | |
1111 | struct fc_frame *fp; | |
1112 | ||
7414705e RL |
1113 | FC_LPORT_DBG(lport, "Entered SCR state from %s state\n", |
1114 | fc_lport_state(lport)); | |
42e9a92f RL |
1115 | |
1116 | fc_lport_state_enter(lport, LPORT_ST_SCR); | |
1117 | ||
1118 | fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr)); | |
1119 | if (!fp) { | |
1120 | fc_lport_error(lport, fp); | |
1121 | return; | |
1122 | } | |
1123 | ||
a46f327a | 1124 | if (!lport->tt.elsct_send(lport, FC_FID_FCTRL, fp, ELS_SCR, |
42e9a92f | 1125 | fc_lport_scr_resp, lport, lport->e_d_tov)) |
8f550f93 | 1126 | fc_lport_error(lport, NULL); |
42e9a92f RL |
1127 | } |
1128 | ||
1129 | /** | |
c914f7d1 | 1130 | * fc_lport_enter_ns() - register some object with the name server |
42e9a92f RL |
1131 | * @lport: Fibre Channel local port to register |
1132 | * | |
1133 | * Locking Note: The lport lock is expected to be held before calling | |
1134 | * this routine. | |
1135 | */ | |
c914f7d1 | 1136 | static void fc_lport_enter_ns(struct fc_lport *lport, enum fc_lport_state state) |
c9866a54 CL |
1137 | { |
1138 | struct fc_frame *fp; | |
c914f7d1 CL |
1139 | enum fc_ns_req cmd; |
1140 | int size = sizeof(struct fc_ct_hdr); | |
c9866a54 CL |
1141 | size_t len; |
1142 | ||
c914f7d1 CL |
1143 | FC_LPORT_DBG(lport, "Entered %s state from %s state\n", |
1144 | fc_lport_state_names[state], | |
c9866a54 CL |
1145 | fc_lport_state(lport)); |
1146 | ||
c914f7d1 | 1147 | fc_lport_state_enter(lport, state); |
c9866a54 | 1148 | |
c914f7d1 CL |
1149 | switch (state) { |
1150 | case LPORT_ST_RNN_ID: | |
1151 | cmd = FC_NS_RNN_ID; | |
1152 | size += sizeof(struct fc_ns_rn_id); | |
1153 | break; | |
1154 | case LPORT_ST_RSNN_NN: | |
1155 | len = strnlen(fc_host_symbolic_name(lport->host), 255); | |
1156 | /* if there is no symbolic name, skip to RFT_ID */ | |
1157 | if (!len) | |
1158 | return fc_lport_enter_ns(lport, LPORT_ST_RFT_ID); | |
1159 | cmd = FC_NS_RSNN_NN; | |
1160 | size += sizeof(struct fc_ns_rsnn) + len; | |
1161 | break; | |
1162 | case LPORT_ST_RSPN_ID: | |
1163 | len = strnlen(fc_host_symbolic_name(lport->host), 255); | |
1164 | /* if there is no symbolic name, skip to RFT_ID */ | |
1165 | if (!len) | |
1166 | return fc_lport_enter_ns(lport, LPORT_ST_RFT_ID); | |
1167 | cmd = FC_NS_RSPN_ID; | |
1168 | size += sizeof(struct fc_ns_rspn) + len; | |
1169 | break; | |
1170 | case LPORT_ST_RFT_ID: | |
1171 | cmd = FC_NS_RFT_ID; | |
1172 | size += sizeof(struct fc_ns_rft); | |
1173 | break; | |
1174 | default: | |
1175 | fc_lport_error(lport, NULL); | |
5baa17c3 CL |
1176 | return; |
1177 | } | |
1178 | ||
c914f7d1 | 1179 | fp = fc_frame_alloc(lport, size); |
c9c7bd7a CL |
1180 | if (!fp) { |
1181 | fc_lport_error(lport, fp); | |
1182 | return; | |
1183 | } | |
1184 | ||
c914f7d1 | 1185 | if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, cmd, |
7cccc157 | 1186 | fc_lport_ns_resp, |
c9c7bd7a CL |
1187 | lport, lport->e_d_tov)) |
1188 | fc_lport_error(lport, fp); | |
1189 | } | |
1190 | ||
42e9a92f RL |
1191 | static struct fc_rport_operations fc_lport_rport_ops = { |
1192 | .event_callback = fc_lport_rport_callback, | |
1193 | }; | |
1194 | ||
1195 | /** | |
34f42a07 | 1196 | * fc_rport_enter_dns() - Create a rport to the name server |
42e9a92f RL |
1197 | * @lport: Fibre Channel local port requesting a rport for the name server |
1198 | * | |
1199 | * Locking Note: The lport lock is expected to be held before calling | |
1200 | * this routine. | |
1201 | */ | |
1202 | static void fc_lport_enter_dns(struct fc_lport *lport) | |
1203 | { | |
ab28f1fd | 1204 | struct fc_rport_priv *rdata; |
42e9a92f | 1205 | |
7414705e RL |
1206 | FC_LPORT_DBG(lport, "Entered DNS state from %s state\n", |
1207 | fc_lport_state(lport)); | |
42e9a92f RL |
1208 | |
1209 | fc_lport_state_enter(lport, LPORT_ST_DNS); | |
1210 | ||
48f00902 | 1211 | mutex_lock(&lport->disc.disc_mutex); |
9737e6a7 | 1212 | rdata = lport->tt.rport_create(lport, FC_FID_DIR_SERV); |
48f00902 | 1213 | mutex_unlock(&lport->disc.disc_mutex); |
9fb9d328 | 1214 | if (!rdata) |
42e9a92f RL |
1215 | goto err; |
1216 | ||
42e9a92f | 1217 | rdata->ops = &fc_lport_rport_ops; |
9fb9d328 | 1218 | lport->tt.rport_login(rdata); |
42e9a92f RL |
1219 | return; |
1220 | ||
1221 | err: | |
1222 | fc_lport_error(lport, NULL); | |
1223 | } | |
1224 | ||
1225 | /** | |
34f42a07 | 1226 | * fc_lport_timeout() - Handler for the retry_work timer. |
42e9a92f RL |
1227 | * @work: The work struct of the fc_lport |
1228 | */ | |
1229 | static void fc_lport_timeout(struct work_struct *work) | |
1230 | { | |
1231 | struct fc_lport *lport = | |
1232 | container_of(work, struct fc_lport, | |
1233 | retry_work.work); | |
1234 | ||
1235 | mutex_lock(&lport->lp_mutex); | |
1236 | ||
1237 | switch (lport->state) { | |
b1d9fd55 | 1238 | case LPORT_ST_DISABLED: |
22655ac2 JE |
1239 | WARN_ON(1); |
1240 | break; | |
42e9a92f | 1241 | case LPORT_ST_READY: |
42e9a92f RL |
1242 | WARN_ON(1); |
1243 | break; | |
22655ac2 JE |
1244 | case LPORT_ST_RESET: |
1245 | break; | |
42e9a92f RL |
1246 | case LPORT_ST_FLOGI: |
1247 | fc_lport_enter_flogi(lport); | |
1248 | break; | |
1249 | case LPORT_ST_DNS: | |
1250 | fc_lport_enter_dns(lport); | |
1251 | break; | |
c9c7bd7a | 1252 | case LPORT_ST_RNN_ID: |
5baa17c3 | 1253 | case LPORT_ST_RSNN_NN: |
c9866a54 | 1254 | case LPORT_ST_RSPN_ID: |
42e9a92f | 1255 | case LPORT_ST_RFT_ID: |
c914f7d1 | 1256 | fc_lport_enter_ns(lport, lport->state); |
42e9a92f RL |
1257 | break; |
1258 | case LPORT_ST_SCR: | |
1259 | fc_lport_enter_scr(lport); | |
1260 | break; | |
1261 | case LPORT_ST_LOGO: | |
1262 | fc_lport_enter_logo(lport); | |
1263 | break; | |
1264 | } | |
1265 | ||
1266 | mutex_unlock(&lport->lp_mutex); | |
1267 | } | |
1268 | ||
1269 | /** | |
34f42a07 | 1270 | * fc_lport_logo_resp() - Handle response to LOGO request |
42e9a92f RL |
1271 | * @sp: current sequence in LOGO exchange |
1272 | * @fp: response frame | |
1273 | * @lp_arg: Fibre Channel lport port instance that sent the LOGO request | |
1274 | * | |
1275 | * Locking Note: This function will be called without the lport lock | |
1276 | * held, but it will lock, call an _enter_* function or fc_lport_error | |
1277 | * and then unlock the lport. | |
1278 | */ | |
11b56188 | 1279 | void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp, |
42e9a92f RL |
1280 | void *lp_arg) |
1281 | { | |
1282 | struct fc_lport *lport = lp_arg; | |
1283 | u8 op; | |
1284 | ||
f657d299 JE |
1285 | FC_LPORT_DBG(lport, "Received a LOGO %s\n", fc_els_resp_type(fp)); |
1286 | ||
42e9a92f RL |
1287 | if (fp == ERR_PTR(-FC_EX_CLOSED)) |
1288 | return; | |
1289 | ||
1290 | mutex_lock(&lport->lp_mutex); | |
1291 | ||
42e9a92f | 1292 | if (lport->state != LPORT_ST_LOGO) { |
7414705e RL |
1293 | FC_LPORT_DBG(lport, "Received a LOGO response, but in state " |
1294 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1295 | if (IS_ERR(fp)) |
1296 | goto err; | |
42e9a92f RL |
1297 | goto out; |
1298 | } | |
1299 | ||
76f6804e AJ |
1300 | if (IS_ERR(fp)) { |
1301 | fc_lport_error(lport, fp); | |
1302 | goto err; | |
1303 | } | |
1304 | ||
42e9a92f RL |
1305 | op = fc_frame_payload_op(fp); |
1306 | if (op == ELS_LS_ACC) | |
1190d925 | 1307 | fc_lport_enter_disabled(lport); |
42e9a92f RL |
1308 | else |
1309 | fc_lport_error(lport, fp); | |
1310 | ||
1311 | out: | |
1312 | fc_frame_free(fp); | |
1313 | err: | |
1314 | mutex_unlock(&lport->lp_mutex); | |
1315 | } | |
11b56188 | 1316 | EXPORT_SYMBOL(fc_lport_logo_resp); |
42e9a92f RL |
1317 | |
1318 | /** | |
34f42a07 | 1319 | * fc_rport_enter_logo() - Logout of the fabric |
42e9a92f RL |
1320 | * @lport: Fibre Channel local port to be logged out |
1321 | * | |
1322 | * Locking Note: The lport lock is expected to be held before calling | |
1323 | * this routine. | |
1324 | */ | |
1325 | static void fc_lport_enter_logo(struct fc_lport *lport) | |
1326 | { | |
1327 | struct fc_frame *fp; | |
1328 | struct fc_els_logo *logo; | |
1329 | ||
7414705e RL |
1330 | FC_LPORT_DBG(lport, "Entered LOGO state from %s state\n", |
1331 | fc_lport_state(lport)); | |
42e9a92f RL |
1332 | |
1333 | fc_lport_state_enter(lport, LPORT_ST_LOGO); | |
8faecddb | 1334 | fc_vports_linkchange(lport); |
42e9a92f | 1335 | |
42e9a92f RL |
1336 | fp = fc_frame_alloc(lport, sizeof(*logo)); |
1337 | if (!fp) { | |
1338 | fc_lport_error(lport, fp); | |
1339 | return; | |
1340 | } | |
1341 | ||
a46f327a JE |
1342 | if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, ELS_LOGO, |
1343 | fc_lport_logo_resp, lport, lport->e_d_tov)) | |
8f550f93 | 1344 | fc_lport_error(lport, NULL); |
42e9a92f RL |
1345 | } |
1346 | ||
1347 | /** | |
34f42a07 | 1348 | * fc_lport_flogi_resp() - Handle response to FLOGI request |
42e9a92f RL |
1349 | * @sp: current sequence in FLOGI exchange |
1350 | * @fp: response frame | |
1351 | * @lp_arg: Fibre Channel lport port instance that sent the FLOGI 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 | */ | |
11b56188 | 1357 | void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, |
42e9a92f RL |
1358 | void *lp_arg) |
1359 | { | |
1360 | struct fc_lport *lport = lp_arg; | |
1361 | struct fc_frame_header *fh; | |
1362 | struct fc_els_flogi *flp; | |
1363 | u32 did; | |
1364 | u16 csp_flags; | |
1365 | unsigned int r_a_tov; | |
1366 | unsigned int e_d_tov; | |
1367 | u16 mfs; | |
1368 | ||
f657d299 JE |
1369 | FC_LPORT_DBG(lport, "Received a FLOGI %s\n", fc_els_resp_type(fp)); |
1370 | ||
42e9a92f RL |
1371 | if (fp == ERR_PTR(-FC_EX_CLOSED)) |
1372 | return; | |
1373 | ||
1374 | mutex_lock(&lport->lp_mutex); | |
1375 | ||
42e9a92f | 1376 | if (lport->state != LPORT_ST_FLOGI) { |
7414705e RL |
1377 | FC_LPORT_DBG(lport, "Received a FLOGI response, but in state " |
1378 | "%s\n", fc_lport_state(lport)); | |
76f6804e AJ |
1379 | if (IS_ERR(fp)) |
1380 | goto err; | |
42e9a92f RL |
1381 | goto out; |
1382 | } | |
1383 | ||
76f6804e AJ |
1384 | if (IS_ERR(fp)) { |
1385 | fc_lport_error(lport, fp); | |
1386 | goto err; | |
1387 | } | |
1388 | ||
42e9a92f RL |
1389 | fh = fc_frame_header_get(fp); |
1390 | did = ntoh24(fh->fh_d_id); | |
1391 | if (fc_frame_payload_op(fp) == ELS_LS_ACC && did != 0) { | |
1392 | ||
7414705e RL |
1393 | printk(KERN_INFO "libfc: Assigned FID (%6x) in FLOGI response\n", |
1394 | did); | |
42e9a92f RL |
1395 | fc_host_port_id(lport->host) = did; |
1396 | ||
1397 | flp = fc_frame_payload_get(fp, sizeof(*flp)); | |
1398 | if (flp) { | |
1399 | mfs = ntohs(flp->fl_csp.sp_bb_data) & | |
1400 | FC_SP_BB_DATA_MASK; | |
1401 | if (mfs >= FC_SP_MIN_MAX_PAYLOAD && | |
1402 | mfs < lport->mfs) | |
1403 | lport->mfs = mfs; | |
1404 | csp_flags = ntohs(flp->fl_csp.sp_features); | |
1405 | r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov); | |
1406 | e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov); | |
1407 | if (csp_flags & FC_SP_FT_EDTR) | |
1408 | e_d_tov /= 1000000; | |
db36c06c CL |
1409 | |
1410 | lport->npiv_enabled = !!(csp_flags & FC_SP_FT_NPIV_ACC); | |
1411 | ||
42e9a92f RL |
1412 | if ((csp_flags & FC_SP_FT_FPORT) == 0) { |
1413 | if (e_d_tov > lport->e_d_tov) | |
1414 | lport->e_d_tov = e_d_tov; | |
1415 | lport->r_a_tov = 2 * e_d_tov; | |
7414705e RL |
1416 | printk(KERN_INFO "libfc: Port (%6x) entered " |
1417 | "point to point mode\n", did); | |
42e9a92f RL |
1418 | fc_lport_ptp_setup(lport, ntoh24(fh->fh_s_id), |
1419 | get_unaligned_be64( | |
1420 | &flp->fl_wwpn), | |
1421 | get_unaligned_be64( | |
1422 | &flp->fl_wwnn)); | |
1423 | } else { | |
1424 | lport->e_d_tov = e_d_tov; | |
1425 | lport->r_a_tov = r_a_tov; | |
1426 | fc_host_fabric_name(lport->host) = | |
1427 | get_unaligned_be64(&flp->fl_wwnn); | |
1428 | fc_lport_enter_dns(lport); | |
1429 | } | |
1430 | } | |
42e9a92f | 1431 | } else { |
7414705e | 1432 | FC_LPORT_DBG(lport, "Bad FLOGI response\n"); |
42e9a92f RL |
1433 | } |
1434 | ||
1435 | out: | |
1436 | fc_frame_free(fp); | |
1437 | err: | |
1438 | mutex_unlock(&lport->lp_mutex); | |
1439 | } | |
11b56188 | 1440 | EXPORT_SYMBOL(fc_lport_flogi_resp); |
42e9a92f RL |
1441 | |
1442 | /** | |
34f42a07 | 1443 | * fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager |
42e9a92f RL |
1444 | * @lport: Fibre Channel local port to be logged in to the fabric |
1445 | * | |
1446 | * Locking Note: The lport lock is expected to be held before calling | |
1447 | * this routine. | |
1448 | */ | |
1449 | void fc_lport_enter_flogi(struct fc_lport *lport) | |
1450 | { | |
1451 | struct fc_frame *fp; | |
1452 | ||
7414705e RL |
1453 | FC_LPORT_DBG(lport, "Entered FLOGI state from %s state\n", |
1454 | fc_lport_state(lport)); | |
42e9a92f RL |
1455 | |
1456 | fc_lport_state_enter(lport, LPORT_ST_FLOGI); | |
1457 | ||
1458 | fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); | |
1459 | if (!fp) | |
1460 | return fc_lport_error(lport, fp); | |
1461 | ||
db36c06c CL |
1462 | if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, |
1463 | lport->vport ? ELS_FDISC : ELS_FLOGI, | |
42e9a92f | 1464 | fc_lport_flogi_resp, lport, lport->e_d_tov)) |
8f550f93 | 1465 | fc_lport_error(lport, NULL); |
42e9a92f RL |
1466 | } |
1467 | ||
1468 | /* Configure a fc_lport */ | |
1469 | int fc_lport_config(struct fc_lport *lport) | |
1470 | { | |
1471 | INIT_DELAYED_WORK(&lport->retry_work, fc_lport_timeout); | |
1472 | mutex_init(&lport->lp_mutex); | |
1473 | ||
b1d9fd55 | 1474 | fc_lport_state_enter(lport, LPORT_ST_DISABLED); |
42e9a92f RL |
1475 | |
1476 | fc_lport_add_fc4_type(lport, FC_TYPE_FCP); | |
1477 | fc_lport_add_fc4_type(lport, FC_TYPE_CT); | |
1478 | ||
1479 | return 0; | |
1480 | } | |
1481 | EXPORT_SYMBOL(fc_lport_config); | |
1482 | ||
1483 | int fc_lport_init(struct fc_lport *lport) | |
1484 | { | |
1485 | if (!lport->tt.lport_recv) | |
1486 | lport->tt.lport_recv = fc_lport_recv_req; | |
1487 | ||
1488 | if (!lport->tt.lport_reset) | |
1489 | lport->tt.lport_reset = fc_lport_reset; | |
1490 | ||
1491 | fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; | |
1492 | fc_host_node_name(lport->host) = lport->wwnn; | |
1493 | fc_host_port_name(lport->host) = lport->wwpn; | |
1494 | fc_host_supported_classes(lport->host) = FC_COS_CLASS3; | |
1495 | memset(fc_host_supported_fc4s(lport->host), 0, | |
1496 | sizeof(fc_host_supported_fc4s(lport->host))); | |
1497 | fc_host_supported_fc4s(lport->host)[2] = 1; | |
1498 | fc_host_supported_fc4s(lport->host)[7] = 1; | |
1499 | ||
1500 | /* This value is also unchanging */ | |
1501 | memset(fc_host_active_fc4s(lport->host), 0, | |
1502 | sizeof(fc_host_active_fc4s(lport->host))); | |
1503 | fc_host_active_fc4s(lport->host)[2] = 1; | |
1504 | fc_host_active_fc4s(lport->host)[7] = 1; | |
1505 | fc_host_maxframe_size(lport->host) = lport->mfs; | |
1506 | fc_host_supported_speeds(lport->host) = 0; | |
1507 | if (lport->link_supported_speeds & FC_PORTSPEED_1GBIT) | |
1508 | fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_1GBIT; | |
1509 | if (lport->link_supported_speeds & FC_PORTSPEED_10GBIT) | |
1510 | fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_10GBIT; | |
1511 | ||
1512 | return 0; | |
1513 | } | |
1514 | EXPORT_SYMBOL(fc_lport_init); |