Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2010 Cisco Systems, Inc. |
| 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 | |
| 18 | /* XXX TBD some includes may be extraneous */ |
| 19 | |
| 20 | #include <linux/module.h> |
| 21 | #include <linux/moduleparam.h> |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 22 | #include <linux/utsname.h> |
| 23 | #include <linux/init.h> |
| 24 | #include <linux/slab.h> |
| 25 | #include <linux/kthread.h> |
| 26 | #include <linux/types.h> |
| 27 | #include <linux/string.h> |
| 28 | #include <linux/configfs.h> |
| 29 | #include <linux/ctype.h> |
| 30 | #include <linux/hash.h> |
| 31 | #include <linux/rcupdate.h> |
| 32 | #include <linux/rculist.h> |
| 33 | #include <linux/kref.h> |
| 34 | #include <asm/unaligned.h> |
| 35 | #include <scsi/scsi.h> |
| 36 | #include <scsi/scsi_host.h> |
| 37 | #include <scsi/scsi_device.h> |
| 38 | #include <scsi/scsi_cmnd.h> |
| 39 | #include <scsi/libfc.h> |
| 40 | |
| 41 | #include <target/target_core_base.h> |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 42 | #include <target/target_core_fabric.h> |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 43 | #include <target/target_core_configfs.h> |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 44 | #include <target/configfs_macros.h> |
| 45 | |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 46 | #include "tcm_fc.h" |
| 47 | |
| 48 | static void ft_sess_delete_all(struct ft_tport *); |
| 49 | |
| 50 | /* |
| 51 | * Lookup or allocate target local port. |
| 52 | * Caller holds ft_lport_lock. |
| 53 | */ |
| 54 | static struct ft_tport *ft_tport_create(struct fc_lport *lport) |
| 55 | { |
| 56 | struct ft_tpg *tpg; |
| 57 | struct ft_tport *tport; |
| 58 | int i; |
| 59 | |
Mark Rustad | 863555b | 2012-06-26 15:57:30 -0700 | [diff] [blame] | 60 | tport = rcu_dereference_protected(lport->prov[FC_TYPE_FCP], |
| 61 | lockdep_is_held(&ft_lport_lock)); |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 62 | if (tport && tport->tpg) |
| 63 | return tport; |
| 64 | |
| 65 | tpg = ft_lport_find_tpg(lport); |
| 66 | if (!tpg) |
| 67 | return NULL; |
| 68 | |
| 69 | if (tport) { |
| 70 | tport->tpg = tpg; |
| 71 | return tport; |
| 72 | } |
| 73 | |
| 74 | tport = kzalloc(sizeof(*tport), GFP_KERNEL); |
| 75 | if (!tport) |
| 76 | return NULL; |
| 77 | |
| 78 | tport->lport = lport; |
| 79 | tport->tpg = tpg; |
| 80 | tpg->tport = tport; |
| 81 | for (i = 0; i < FT_SESS_HASH_SIZE; i++) |
| 82 | INIT_HLIST_HEAD(&tport->hash[i]); |
| 83 | |
| 84 | rcu_assign_pointer(lport->prov[FC_TYPE_FCP], tport); |
| 85 | return tport; |
| 86 | } |
| 87 | |
| 88 | /* |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 89 | * Delete a target local port. |
| 90 | * Caller holds ft_lport_lock. |
| 91 | */ |
| 92 | static void ft_tport_delete(struct ft_tport *tport) |
| 93 | { |
| 94 | struct fc_lport *lport; |
| 95 | struct ft_tpg *tpg; |
| 96 | |
| 97 | ft_sess_delete_all(tport); |
| 98 | lport = tport->lport; |
| 99 | BUG_ON(tport != lport->prov[FC_TYPE_FCP]); |
| 100 | rcu_assign_pointer(lport->prov[FC_TYPE_FCP], NULL); |
| 101 | |
| 102 | tpg = tport->tpg; |
| 103 | if (tpg) { |
| 104 | tpg->tport = NULL; |
| 105 | tport->tpg = NULL; |
| 106 | } |
Paul E. McKenney | a6c76da | 2012-01-06 17:02:13 -0800 | [diff] [blame] | 107 | kfree_rcu(tport, rcu); |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 108 | } |
| 109 | |
| 110 | /* |
| 111 | * Add local port. |
| 112 | * Called thru fc_lport_iterate(). |
| 113 | */ |
| 114 | void ft_lport_add(struct fc_lport *lport, void *arg) |
| 115 | { |
| 116 | mutex_lock(&ft_lport_lock); |
| 117 | ft_tport_create(lport); |
| 118 | mutex_unlock(&ft_lport_lock); |
| 119 | } |
| 120 | |
| 121 | /* |
| 122 | * Delete local port. |
| 123 | * Called thru fc_lport_iterate(). |
| 124 | */ |
| 125 | void ft_lport_del(struct fc_lport *lport, void *arg) |
| 126 | { |
| 127 | struct ft_tport *tport; |
| 128 | |
| 129 | mutex_lock(&ft_lport_lock); |
| 130 | tport = lport->prov[FC_TYPE_FCP]; |
| 131 | if (tport) |
| 132 | ft_tport_delete(tport); |
| 133 | mutex_unlock(&ft_lport_lock); |
| 134 | } |
| 135 | |
| 136 | /* |
| 137 | * Notification of local port change from libfc. |
| 138 | * Create or delete local port and associated tport. |
| 139 | */ |
| 140 | int ft_lport_notify(struct notifier_block *nb, unsigned long event, void *arg) |
| 141 | { |
| 142 | struct fc_lport *lport = arg; |
| 143 | |
| 144 | switch (event) { |
| 145 | case FC_LPORT_EV_ADD: |
| 146 | ft_lport_add(lport, NULL); |
| 147 | break; |
| 148 | case FC_LPORT_EV_DEL: |
| 149 | ft_lport_del(lport, NULL); |
| 150 | break; |
| 151 | } |
| 152 | return NOTIFY_DONE; |
| 153 | } |
| 154 | |
| 155 | /* |
| 156 | * Hash function for FC_IDs. |
| 157 | */ |
| 158 | static u32 ft_sess_hash(u32 port_id) |
| 159 | { |
| 160 | return hash_32(port_id, FT_SESS_HASH_BITS); |
| 161 | } |
| 162 | |
| 163 | /* |
| 164 | * Find session in local port. |
| 165 | * Sessions and hash lists are RCU-protected. |
| 166 | * A reference is taken which must be eventually freed. |
| 167 | */ |
| 168 | static struct ft_sess *ft_sess_get(struct fc_lport *lport, u32 port_id) |
| 169 | { |
| 170 | struct ft_tport *tport; |
| 171 | struct hlist_head *head; |
| 172 | struct hlist_node *pos; |
| 173 | struct ft_sess *sess; |
| 174 | |
| 175 | rcu_read_lock(); |
| 176 | tport = rcu_dereference(lport->prov[FC_TYPE_FCP]); |
| 177 | if (!tport) |
| 178 | goto out; |
| 179 | |
| 180 | head = &tport->hash[ft_sess_hash(port_id)]; |
| 181 | hlist_for_each_entry_rcu(sess, pos, head, hash) { |
| 182 | if (sess->port_id == port_id) { |
| 183 | kref_get(&sess->kref); |
| 184 | rcu_read_unlock(); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 185 | pr_debug("port_id %x found %p\n", port_id, sess); |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 186 | return sess; |
| 187 | } |
| 188 | } |
| 189 | out: |
| 190 | rcu_read_unlock(); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 191 | pr_debug("port_id %x not found\n", port_id); |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 192 | return NULL; |
| 193 | } |
| 194 | |
| 195 | /* |
| 196 | * Allocate session and enter it in the hash for the local port. |
| 197 | * Caller holds ft_lport_lock. |
| 198 | */ |
| 199 | static struct ft_sess *ft_sess_create(struct ft_tport *tport, u32 port_id, |
| 200 | struct ft_node_acl *acl) |
| 201 | { |
| 202 | struct ft_sess *sess; |
| 203 | struct hlist_head *head; |
| 204 | struct hlist_node *pos; |
| 205 | |
| 206 | head = &tport->hash[ft_sess_hash(port_id)]; |
| 207 | hlist_for_each_entry_rcu(sess, pos, head, hash) |
| 208 | if (sess->port_id == port_id) |
| 209 | return sess; |
| 210 | |
| 211 | sess = kzalloc(sizeof(*sess), GFP_KERNEL); |
| 212 | if (!sess) |
| 213 | return NULL; |
| 214 | |
| 215 | sess->se_sess = transport_init_session(); |
Dan Carpenter | 552523d | 2011-06-15 09:41:33 -0700 | [diff] [blame] | 216 | if (IS_ERR(sess->se_sess)) { |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 217 | kfree(sess); |
| 218 | return NULL; |
| 219 | } |
| 220 | sess->se_sess->se_node_acl = &acl->se_node_acl; |
| 221 | sess->tport = tport; |
| 222 | sess->port_id = port_id; |
| 223 | kref_init(&sess->kref); /* ref for table entry */ |
| 224 | hlist_add_head_rcu(&sess->hash, head); |
| 225 | tport->sess_count++; |
| 226 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 227 | pr_debug("port_id %x sess %p\n", port_id, sess); |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 228 | |
| 229 | transport_register_session(&tport->tpg->se_tpg, &acl->se_node_acl, |
| 230 | sess->se_sess, sess); |
| 231 | return sess; |
| 232 | } |
| 233 | |
| 234 | /* |
| 235 | * Unhash the session. |
| 236 | * Caller holds ft_lport_lock. |
| 237 | */ |
| 238 | static void ft_sess_unhash(struct ft_sess *sess) |
| 239 | { |
| 240 | struct ft_tport *tport = sess->tport; |
| 241 | |
| 242 | hlist_del_rcu(&sess->hash); |
| 243 | BUG_ON(!tport->sess_count); |
| 244 | tport->sess_count--; |
| 245 | sess->port_id = -1; |
| 246 | sess->params = 0; |
| 247 | } |
| 248 | |
| 249 | /* |
| 250 | * Delete session from hash. |
| 251 | * Caller holds ft_lport_lock. |
| 252 | */ |
| 253 | static struct ft_sess *ft_sess_delete(struct ft_tport *tport, u32 port_id) |
| 254 | { |
| 255 | struct hlist_head *head; |
| 256 | struct hlist_node *pos; |
| 257 | struct ft_sess *sess; |
| 258 | |
| 259 | head = &tport->hash[ft_sess_hash(port_id)]; |
| 260 | hlist_for_each_entry_rcu(sess, pos, head, hash) { |
| 261 | if (sess->port_id == port_id) { |
| 262 | ft_sess_unhash(sess); |
| 263 | return sess; |
| 264 | } |
| 265 | } |
| 266 | return NULL; |
| 267 | } |
| 268 | |
| 269 | /* |
| 270 | * Delete all sessions from tport. |
| 271 | * Caller holds ft_lport_lock. |
| 272 | */ |
| 273 | static void ft_sess_delete_all(struct ft_tport *tport) |
| 274 | { |
| 275 | struct hlist_head *head; |
| 276 | struct hlist_node *pos; |
| 277 | struct ft_sess *sess; |
| 278 | |
| 279 | for (head = tport->hash; |
| 280 | head < &tport->hash[FT_SESS_HASH_SIZE]; head++) { |
| 281 | hlist_for_each_entry_rcu(sess, pos, head, hash) { |
| 282 | ft_sess_unhash(sess); |
| 283 | transport_deregister_session_configfs(sess->se_sess); |
| 284 | ft_sess_put(sess); /* release from table */ |
| 285 | } |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | /* |
| 290 | * TCM ops for sessions. |
| 291 | */ |
| 292 | |
| 293 | /* |
| 294 | * Determine whether session is allowed to be shutdown in the current context. |
| 295 | * Returns non-zero if the session should be shutdown. |
| 296 | */ |
| 297 | int ft_sess_shutdown(struct se_session *se_sess) |
| 298 | { |
| 299 | struct ft_sess *sess = se_sess->fabric_sess_ptr; |
| 300 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 301 | pr_debug("port_id %x\n", sess->port_id); |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 302 | return 1; |
| 303 | } |
| 304 | |
| 305 | /* |
| 306 | * Remove session and send PRLO. |
| 307 | * This is called when the ACL is being deleted or queue depth is changing. |
| 308 | */ |
| 309 | void ft_sess_close(struct se_session *se_sess) |
| 310 | { |
| 311 | struct ft_sess *sess = se_sess->fabric_sess_ptr; |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 312 | u32 port_id; |
| 313 | |
| 314 | mutex_lock(&ft_lport_lock); |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 315 | port_id = sess->port_id; |
| 316 | if (port_id == -1) { |
Dan Carpenter | 7c7cf3b | 2011-06-13 23:08:46 +0300 | [diff] [blame] | 317 | mutex_unlock(&ft_lport_lock); |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 318 | return; |
| 319 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 320 | pr_debug("port_id %x\n", port_id); |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 321 | ft_sess_unhash(sess); |
| 322 | mutex_unlock(&ft_lport_lock); |
| 323 | transport_deregister_session_configfs(se_sess); |
| 324 | ft_sess_put(sess); |
| 325 | /* XXX Send LOGO or PRLO */ |
| 326 | synchronize_rcu(); /* let transport deregister happen */ |
| 327 | } |
| 328 | |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 329 | u32 ft_sess_get_index(struct se_session *se_sess) |
| 330 | { |
| 331 | struct ft_sess *sess = se_sess->fabric_sess_ptr; |
| 332 | |
| 333 | return sess->port_id; /* XXX TBD probably not what is needed */ |
| 334 | } |
| 335 | |
| 336 | u32 ft_sess_get_port_name(struct se_session *se_sess, |
| 337 | unsigned char *buf, u32 len) |
| 338 | { |
| 339 | struct ft_sess *sess = se_sess->fabric_sess_ptr; |
| 340 | |
| 341 | return ft_format_wwn(buf, len, sess->port_name); |
| 342 | } |
| 343 | |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 344 | /* |
| 345 | * libfc ops involving sessions. |
| 346 | */ |
| 347 | |
| 348 | static int ft_prli_locked(struct fc_rport_priv *rdata, u32 spp_len, |
| 349 | const struct fc_els_spp *rspp, struct fc_els_spp *spp) |
| 350 | { |
| 351 | struct ft_tport *tport; |
| 352 | struct ft_sess *sess; |
| 353 | struct ft_node_acl *acl; |
| 354 | u32 fcp_parm; |
| 355 | |
| 356 | tport = ft_tport_create(rdata->local_port); |
| 357 | if (!tport) |
| 358 | return 0; /* not a target for this local port */ |
| 359 | |
| 360 | acl = ft_acl_get(tport->tpg, rdata); |
| 361 | if (!acl) |
| 362 | return 0; |
| 363 | |
| 364 | if (!rspp) |
| 365 | goto fill; |
| 366 | |
| 367 | if (rspp->spp_flags & (FC_SPP_OPA_VAL | FC_SPP_RPA_VAL)) |
| 368 | return FC_SPP_RESP_NO_PA; |
| 369 | |
| 370 | /* |
| 371 | * If both target and initiator bits are off, the SPP is invalid. |
| 372 | */ |
| 373 | fcp_parm = ntohl(rspp->spp_params); |
| 374 | if (!(fcp_parm & (FCP_SPPF_INIT_FCN | FCP_SPPF_TARG_FCN))) |
| 375 | return FC_SPP_RESP_INVL; |
| 376 | |
| 377 | /* |
| 378 | * Create session (image pair) only if requested by |
| 379 | * EST_IMG_PAIR flag and if the requestor is an initiator. |
| 380 | */ |
| 381 | if (rspp->spp_flags & FC_SPP_EST_IMG_PAIR) { |
| 382 | spp->spp_flags |= FC_SPP_EST_IMG_PAIR; |
| 383 | if (!(fcp_parm & FCP_SPPF_INIT_FCN)) |
| 384 | return FC_SPP_RESP_CONF; |
| 385 | sess = ft_sess_create(tport, rdata->ids.port_id, acl); |
| 386 | if (!sess) |
| 387 | return FC_SPP_RESP_RES; |
| 388 | if (!sess->params) |
| 389 | rdata->prli_count++; |
| 390 | sess->params = fcp_parm; |
| 391 | sess->port_name = rdata->ids.port_name; |
| 392 | sess->max_frame = rdata->maxframe_size; |
| 393 | |
| 394 | /* XXX TBD - clearing actions. unit attn, see 4.10 */ |
| 395 | } |
| 396 | |
| 397 | /* |
| 398 | * OR in our service parameters with other provider (initiator), if any. |
| 399 | * TBD XXX - indicate RETRY capability? |
| 400 | */ |
| 401 | fill: |
| 402 | fcp_parm = ntohl(spp->spp_params); |
| 403 | spp->spp_params = htonl(fcp_parm | FCP_SPPF_TARG_FCN); |
| 404 | return FC_SPP_RESP_ACK; |
| 405 | } |
| 406 | |
| 407 | /** |
| 408 | * tcm_fcp_prli() - Handle incoming or outgoing PRLI for the FCP target |
| 409 | * @rdata: remote port private |
| 410 | * @spp_len: service parameter page length |
| 411 | * @rspp: received service parameter page (NULL for outgoing PRLI) |
| 412 | * @spp: response service parameter page |
| 413 | * |
| 414 | * Returns spp response code. |
| 415 | */ |
| 416 | static int ft_prli(struct fc_rport_priv *rdata, u32 spp_len, |
| 417 | const struct fc_els_spp *rspp, struct fc_els_spp *spp) |
| 418 | { |
| 419 | int ret; |
| 420 | |
| 421 | mutex_lock(&ft_lport_lock); |
| 422 | ret = ft_prli_locked(rdata, spp_len, rspp, spp); |
| 423 | mutex_unlock(&ft_lport_lock); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 424 | pr_debug("port_id %x flags %x ret %x\n", |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 425 | rdata->ids.port_id, rspp ? rspp->spp_flags : 0, ret); |
| 426 | return ret; |
| 427 | } |
| 428 | |
| 429 | static void ft_sess_rcu_free(struct rcu_head *rcu) |
| 430 | { |
| 431 | struct ft_sess *sess = container_of(rcu, struct ft_sess, rcu); |
| 432 | |
| 433 | transport_deregister_session(sess->se_sess); |
| 434 | kfree(sess); |
| 435 | } |
| 436 | |
| 437 | static void ft_sess_free(struct kref *kref) |
| 438 | { |
| 439 | struct ft_sess *sess = container_of(kref, struct ft_sess, kref); |
| 440 | |
| 441 | call_rcu(&sess->rcu, ft_sess_rcu_free); |
| 442 | } |
| 443 | |
| 444 | void ft_sess_put(struct ft_sess *sess) |
| 445 | { |
| 446 | int sess_held = atomic_read(&sess->kref.refcount); |
| 447 | |
| 448 | BUG_ON(!sess_held); |
| 449 | kref_put(&sess->kref, ft_sess_free); |
| 450 | } |
| 451 | |
| 452 | static void ft_prlo(struct fc_rport_priv *rdata) |
| 453 | { |
| 454 | struct ft_sess *sess; |
| 455 | struct ft_tport *tport; |
| 456 | |
| 457 | mutex_lock(&ft_lport_lock); |
Denis Efremov | 08a16208 | 2012-08-18 16:10:31 +0400 | [diff] [blame] | 458 | tport = rcu_dereference_protected(rdata->local_port->prov[FC_TYPE_FCP], |
| 459 | lockdep_is_held(&ft_lport_lock)); |
| 460 | |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 461 | if (!tport) { |
| 462 | mutex_unlock(&ft_lport_lock); |
| 463 | return; |
| 464 | } |
| 465 | sess = ft_sess_delete(tport, rdata->ids.port_id); |
| 466 | if (!sess) { |
| 467 | mutex_unlock(&ft_lport_lock); |
| 468 | return; |
| 469 | } |
| 470 | mutex_unlock(&ft_lport_lock); |
| 471 | transport_deregister_session_configfs(sess->se_sess); |
| 472 | ft_sess_put(sess); /* release from table */ |
| 473 | rdata->prli_count--; |
| 474 | /* XXX TBD - clearing actions. unit attn, see 4.10 */ |
| 475 | } |
| 476 | |
| 477 | /* |
| 478 | * Handle incoming FCP request. |
| 479 | * Caller has verified that the frame is type FCP. |
| 480 | */ |
| 481 | static void ft_recv(struct fc_lport *lport, struct fc_frame *fp) |
| 482 | { |
| 483 | struct ft_sess *sess; |
| 484 | u32 sid = fc_frame_sid(fp); |
| 485 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 486 | pr_debug("sid %x\n", sid); |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 487 | |
| 488 | sess = ft_sess_get(lport, sid); |
| 489 | if (!sess) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 490 | pr_debug("sid %x sess lookup failed\n", sid); |
Kiran Patil | 3699d92 | 2011-04-18 16:24:14 -0700 | [diff] [blame] | 491 | /* TBD XXX - if FCP_CMND, send PRLO */ |
| 492 | fc_frame_free(fp); |
| 493 | return; |
| 494 | } |
| 495 | ft_recv_req(sess, fp); /* must do ft_sess_put() */ |
| 496 | } |
| 497 | |
| 498 | /* |
| 499 | * Provider ops for libfc. |
| 500 | */ |
| 501 | struct fc4_prov ft_prov = { |
| 502 | .prli = ft_prli, |
| 503 | .prlo = ft_prlo, |
| 504 | .recv = ft_recv, |
| 505 | .module = THIS_MODULE, |
| 506 | }; |