Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the Chelsio FCoE driver for Linux. |
| 3 | * |
| 4 | * Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved. |
| 5 | * |
| 6 | * This software is available to you under a choice of one of two |
| 7 | * licenses. You may choose to be licensed under the terms of the GNU |
| 8 | * General Public License (GPL) Version 2, available from the file |
| 9 | * COPYING in the main directory of this source tree, or the |
| 10 | * OpenIB.org BSD license below: |
| 11 | * |
| 12 | * Redistribution and use in source and binary forms, with or |
| 13 | * without modification, are permitted provided that the following |
| 14 | * conditions are met: |
| 15 | * |
| 16 | * - Redistributions of source code must retain the above |
| 17 | * copyright notice, this list of conditions and the following |
| 18 | * disclaimer. |
| 19 | * |
| 20 | * - Redistributions in binary form must reproduce the above |
| 21 | * copyright notice, this list of conditions and the following |
| 22 | * disclaimer in the documentation and/or other materials |
| 23 | * provided with the distribution. |
| 24 | * |
| 25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 26 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 27 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 28 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 29 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 30 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 31 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 32 | * SOFTWARE. |
| 33 | */ |
| 34 | |
| 35 | #include <linux/kernel.h> |
| 36 | #include <linux/string.h> |
| 37 | #include <linux/delay.h> |
| 38 | #include <linux/module.h> |
| 39 | #include <linux/init.h> |
| 40 | #include <linux/pci.h> |
| 41 | #include <linux/mm.h> |
| 42 | #include <linux/jiffies.h> |
| 43 | #include <scsi/fc/fc_fs.h> |
| 44 | |
| 45 | #include "csio_init.h" |
| 46 | |
| 47 | static void |
| 48 | csio_vport_set_state(struct csio_lnode *ln); |
| 49 | |
| 50 | /* |
| 51 | * csio_reg_rnode - Register a remote port with FC transport. |
| 52 | * @rn: Rnode representing remote port. |
| 53 | * |
| 54 | * Call fc_remote_port_add() to register this remote port with FC transport. |
| 55 | * If remote port is Initiator OR Target OR both, change the role appropriately. |
| 56 | * |
| 57 | */ |
| 58 | void |
| 59 | csio_reg_rnode(struct csio_rnode *rn) |
| 60 | { |
| 61 | struct csio_lnode *ln = csio_rnode_to_lnode(rn); |
| 62 | struct Scsi_Host *shost = csio_ln_to_shost(ln); |
| 63 | struct fc_rport_identifiers ids; |
| 64 | struct fc_rport *rport; |
| 65 | struct csio_service_parms *sp; |
| 66 | |
| 67 | ids.node_name = wwn_to_u64(csio_rn_wwnn(rn)); |
| 68 | ids.port_name = wwn_to_u64(csio_rn_wwpn(rn)); |
| 69 | ids.port_id = rn->nport_id; |
| 70 | ids.roles = FC_RPORT_ROLE_UNKNOWN; |
| 71 | |
| 72 | if (rn->role & CSIO_RNFR_INITIATOR || rn->role & CSIO_RNFR_TARGET) { |
| 73 | rport = rn->rport; |
| 74 | CSIO_ASSERT(rport != NULL); |
| 75 | goto update_role; |
| 76 | } |
| 77 | |
| 78 | rn->rport = fc_remote_port_add(shost, 0, &ids); |
| 79 | if (!rn->rport) { |
| 80 | csio_ln_err(ln, "Failed to register rport = 0x%x.\n", |
| 81 | rn->nport_id); |
| 82 | return; |
| 83 | } |
| 84 | |
| 85 | ln->num_reg_rnodes++; |
| 86 | rport = rn->rport; |
| 87 | spin_lock_irq(shost->host_lock); |
| 88 | *((struct csio_rnode **)rport->dd_data) = rn; |
| 89 | spin_unlock_irq(shost->host_lock); |
| 90 | |
| 91 | sp = &rn->rn_sparm; |
Naresh Kumar Inna | 5036f0a | 2012-11-20 18:15:40 +0530 | [diff] [blame] | 92 | rport->maxframe_size = ntohs(sp->csp.sp_bb_data); |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 93 | if (ntohs(sp->clsp[2].cp_class) & FC_CPC_VALID) |
| 94 | rport->supported_classes = FC_COS_CLASS3; |
| 95 | else |
| 96 | rport->supported_classes = FC_COS_UNSPECIFIED; |
| 97 | update_role: |
| 98 | if (rn->role & CSIO_RNFR_INITIATOR) |
| 99 | ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR; |
| 100 | if (rn->role & CSIO_RNFR_TARGET) |
| 101 | ids.roles |= FC_RPORT_ROLE_FCP_TARGET; |
| 102 | |
| 103 | if (ids.roles != FC_RPORT_ROLE_UNKNOWN) |
| 104 | fc_remote_port_rolechg(rport, ids.roles); |
| 105 | |
| 106 | rn->scsi_id = rport->scsi_target_id; |
| 107 | |
| 108 | csio_ln_dbg(ln, "Remote port x%x role 0x%x registered\n", |
| 109 | rn->nport_id, ids.roles); |
| 110 | } |
| 111 | |
| 112 | /* |
| 113 | * csio_unreg_rnode - Unregister a remote port with FC transport. |
| 114 | * @rn: Rnode representing remote port. |
| 115 | * |
| 116 | * Call fc_remote_port_delete() to unregister this remote port with FC |
| 117 | * transport. |
| 118 | * |
| 119 | */ |
| 120 | void |
| 121 | csio_unreg_rnode(struct csio_rnode *rn) |
| 122 | { |
| 123 | struct csio_lnode *ln = csio_rnode_to_lnode(rn); |
| 124 | struct fc_rport *rport = rn->rport; |
| 125 | |
| 126 | rn->role &= ~(CSIO_RNFR_INITIATOR | CSIO_RNFR_TARGET); |
| 127 | fc_remote_port_delete(rport); |
| 128 | ln->num_reg_rnodes--; |
| 129 | |
| 130 | csio_ln_dbg(ln, "Remote port x%x un-registered\n", rn->nport_id); |
| 131 | } |
| 132 | |
| 133 | /* |
| 134 | * csio_lnode_async_event - Async events from local port. |
| 135 | * @ln: lnode representing local port. |
| 136 | * |
| 137 | * Async events from local node that FC transport/SCSI ML |
| 138 | * should be made aware of (Eg: RSCN). |
| 139 | */ |
| 140 | void |
| 141 | csio_lnode_async_event(struct csio_lnode *ln, enum csio_ln_fc_evt fc_evt) |
| 142 | { |
| 143 | switch (fc_evt) { |
| 144 | case CSIO_LN_FC_RSCN: |
| 145 | /* Get payload of rscn from ln */ |
| 146 | /* For each RSCN entry */ |
| 147 | /* |
| 148 | * fc_host_post_event(shost, |
| 149 | * fc_get_event_number(), |
| 150 | * FCH_EVT_RSCN, |
| 151 | * rscn_entry); |
| 152 | */ |
| 153 | break; |
| 154 | case CSIO_LN_FC_LINKUP: |
| 155 | /* send fc_host_post_event */ |
| 156 | /* set vport state */ |
| 157 | if (csio_is_npiv_ln(ln)) |
| 158 | csio_vport_set_state(ln); |
| 159 | |
| 160 | break; |
| 161 | case CSIO_LN_FC_LINKDOWN: |
| 162 | /* send fc_host_post_event */ |
| 163 | /* set vport state */ |
| 164 | if (csio_is_npiv_ln(ln)) |
| 165 | csio_vport_set_state(ln); |
| 166 | |
| 167 | break; |
| 168 | case CSIO_LN_FC_ATTRIB_UPDATE: |
| 169 | csio_fchost_attr_init(ln); |
| 170 | break; |
| 171 | default: |
| 172 | break; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | /* |
| 177 | * csio_fchost_attr_init - Initialize FC transport attributes |
| 178 | * @ln: Lnode. |
| 179 | * |
| 180 | */ |
| 181 | void |
| 182 | csio_fchost_attr_init(struct csio_lnode *ln) |
| 183 | { |
| 184 | struct Scsi_Host *shost = csio_ln_to_shost(ln); |
| 185 | |
| 186 | fc_host_node_name(shost) = wwn_to_u64(csio_ln_wwnn(ln)); |
| 187 | fc_host_port_name(shost) = wwn_to_u64(csio_ln_wwpn(ln)); |
| 188 | |
| 189 | fc_host_supported_classes(shost) = FC_COS_CLASS3; |
| 190 | fc_host_max_npiv_vports(shost) = |
| 191 | (csio_lnode_to_hw(ln))->fres_info.max_vnps; |
| 192 | fc_host_supported_speeds(shost) = FC_PORTSPEED_10GBIT | |
| 193 | FC_PORTSPEED_1GBIT; |
| 194 | |
Naresh Kumar Inna | 5036f0a | 2012-11-20 18:15:40 +0530 | [diff] [blame] | 195 | fc_host_maxframe_size(shost) = ntohs(ln->ln_sparm.csp.sp_bb_data); |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 196 | memset(fc_host_supported_fc4s(shost), 0, |
| 197 | sizeof(fc_host_supported_fc4s(shost))); |
| 198 | fc_host_supported_fc4s(shost)[7] = 1; |
| 199 | |
| 200 | memset(fc_host_active_fc4s(shost), 0, |
| 201 | sizeof(fc_host_active_fc4s(shost))); |
| 202 | fc_host_active_fc4s(shost)[7] = 1; |
| 203 | } |
| 204 | |
| 205 | /* |
| 206 | * csio_get_host_port_id - sysfs entries for nport_id is |
| 207 | * populated/cached from this function |
| 208 | */ |
| 209 | static void |
| 210 | csio_get_host_port_id(struct Scsi_Host *shost) |
| 211 | { |
| 212 | struct csio_lnode *ln = shost_priv(shost); |
| 213 | struct csio_hw *hw = csio_lnode_to_hw(ln); |
| 214 | |
| 215 | spin_lock_irq(&hw->lock); |
| 216 | fc_host_port_id(shost) = ln->nport_id; |
| 217 | spin_unlock_irq(&hw->lock); |
| 218 | } |
| 219 | |
| 220 | /* |
| 221 | * csio_get_port_type - Return FC local port type. |
| 222 | * @shost: scsi host. |
| 223 | * |
| 224 | */ |
| 225 | static void |
| 226 | csio_get_host_port_type(struct Scsi_Host *shost) |
| 227 | { |
| 228 | struct csio_lnode *ln = shost_priv(shost); |
| 229 | struct csio_hw *hw = csio_lnode_to_hw(ln); |
| 230 | |
| 231 | spin_lock_irq(&hw->lock); |
| 232 | if (csio_is_npiv_ln(ln)) |
| 233 | fc_host_port_type(shost) = FC_PORTTYPE_NPIV; |
| 234 | else |
| 235 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; |
| 236 | spin_unlock_irq(&hw->lock); |
| 237 | } |
| 238 | |
| 239 | /* |
| 240 | * csio_get_port_state - Return FC local port state. |
| 241 | * @shost: scsi host. |
| 242 | * |
| 243 | */ |
| 244 | static void |
| 245 | csio_get_host_port_state(struct Scsi_Host *shost) |
| 246 | { |
| 247 | struct csio_lnode *ln = shost_priv(shost); |
| 248 | struct csio_hw *hw = csio_lnode_to_hw(ln); |
| 249 | char state[16]; |
| 250 | |
| 251 | spin_lock_irq(&hw->lock); |
| 252 | |
| 253 | csio_lnode_state_to_str(ln, state); |
| 254 | if (!strcmp(state, "READY")) |
| 255 | fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; |
| 256 | else if (!strcmp(state, "OFFLINE")) |
| 257 | fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; |
| 258 | else |
| 259 | fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; |
| 260 | |
| 261 | spin_unlock_irq(&hw->lock); |
| 262 | } |
| 263 | |
| 264 | /* |
| 265 | * csio_get_host_speed - Return link speed to FC transport. |
| 266 | * @shost: scsi host. |
| 267 | * |
| 268 | */ |
| 269 | static void |
| 270 | csio_get_host_speed(struct Scsi_Host *shost) |
| 271 | { |
| 272 | struct csio_lnode *ln = shost_priv(shost); |
| 273 | struct csio_hw *hw = csio_lnode_to_hw(ln); |
| 274 | |
| 275 | spin_lock_irq(&hw->lock); |
| 276 | switch (hw->pport[ln->portid].link_speed) { |
| 277 | case FW_PORT_CAP_SPEED_1G: |
| 278 | fc_host_speed(shost) = FC_PORTSPEED_1GBIT; |
| 279 | break; |
| 280 | case FW_PORT_CAP_SPEED_10G: |
| 281 | fc_host_speed(shost) = FC_PORTSPEED_10GBIT; |
| 282 | break; |
| 283 | default: |
| 284 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; |
| 285 | break; |
| 286 | } |
| 287 | spin_unlock_irq(&hw->lock); |
| 288 | } |
| 289 | |
| 290 | /* |
| 291 | * csio_get_host_fabric_name - Return fabric name |
| 292 | * @shost: scsi host. |
| 293 | * |
| 294 | */ |
| 295 | static void |
| 296 | csio_get_host_fabric_name(struct Scsi_Host *shost) |
| 297 | { |
| 298 | struct csio_lnode *ln = shost_priv(shost); |
| 299 | struct csio_rnode *rn = NULL; |
| 300 | struct csio_hw *hw = csio_lnode_to_hw(ln); |
| 301 | |
| 302 | spin_lock_irq(&hw->lock); |
| 303 | rn = csio_rnode_lookup_portid(ln, FC_FID_FLOGI); |
| 304 | if (rn) |
| 305 | fc_host_fabric_name(shost) = wwn_to_u64(csio_rn_wwnn(rn)); |
| 306 | else |
| 307 | fc_host_fabric_name(shost) = 0; |
| 308 | spin_unlock_irq(&hw->lock); |
| 309 | } |
| 310 | |
| 311 | /* |
| 312 | * csio_get_host_speed - Return FC transport statistics. |
| 313 | * @ln: Lnode. |
| 314 | * |
| 315 | */ |
| 316 | static struct fc_host_statistics * |
| 317 | csio_get_stats(struct Scsi_Host *shost) |
| 318 | { |
| 319 | struct csio_lnode *ln = shost_priv(shost); |
| 320 | struct csio_hw *hw = csio_lnode_to_hw(ln); |
| 321 | struct fc_host_statistics *fhs = &ln->fch_stats; |
| 322 | struct fw_fcoe_port_stats fcoe_port_stats; |
| 323 | uint64_t seconds; |
| 324 | |
| 325 | memset(&fcoe_port_stats, 0, sizeof(struct fw_fcoe_port_stats)); |
| 326 | csio_get_phy_port_stats(hw, ln->portid, &fcoe_port_stats); |
| 327 | |
Naresh Kumar Inna | 5036f0a | 2012-11-20 18:15:40 +0530 | [diff] [blame] | 328 | fhs->tx_frames += (be64_to_cpu(fcoe_port_stats.tx_bcast_frames) + |
| 329 | be64_to_cpu(fcoe_port_stats.tx_mcast_frames) + |
| 330 | be64_to_cpu(fcoe_port_stats.tx_ucast_frames) + |
| 331 | be64_to_cpu(fcoe_port_stats.tx_offload_frames)); |
| 332 | fhs->tx_words += (be64_to_cpu(fcoe_port_stats.tx_bcast_bytes) + |
| 333 | be64_to_cpu(fcoe_port_stats.tx_mcast_bytes) + |
| 334 | be64_to_cpu(fcoe_port_stats.tx_ucast_bytes) + |
| 335 | be64_to_cpu(fcoe_port_stats.tx_offload_bytes)) / |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 336 | CSIO_WORD_TO_BYTE; |
Naresh Kumar Inna | 5036f0a | 2012-11-20 18:15:40 +0530 | [diff] [blame] | 337 | fhs->rx_frames += (be64_to_cpu(fcoe_port_stats.rx_bcast_frames) + |
| 338 | be64_to_cpu(fcoe_port_stats.rx_mcast_frames) + |
| 339 | be64_to_cpu(fcoe_port_stats.rx_ucast_frames)); |
| 340 | fhs->rx_words += (be64_to_cpu(fcoe_port_stats.rx_bcast_bytes) + |
| 341 | be64_to_cpu(fcoe_port_stats.rx_mcast_bytes) + |
| 342 | be64_to_cpu(fcoe_port_stats.rx_ucast_bytes)) / |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 343 | CSIO_WORD_TO_BYTE; |
Naresh Kumar Inna | 5036f0a | 2012-11-20 18:15:40 +0530 | [diff] [blame] | 344 | fhs->error_frames += be64_to_cpu(fcoe_port_stats.rx_err_frames); |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 345 | fhs->fcp_input_requests += ln->stats.n_input_requests; |
| 346 | fhs->fcp_output_requests += ln->stats.n_output_requests; |
| 347 | fhs->fcp_control_requests += ln->stats.n_control_requests; |
| 348 | fhs->fcp_input_megabytes += ln->stats.n_input_bytes >> 20; |
| 349 | fhs->fcp_output_megabytes += ln->stats.n_output_bytes >> 20; |
| 350 | fhs->link_failure_count = ln->stats.n_link_down; |
| 351 | /* Reset stats for the device */ |
| 352 | seconds = jiffies_to_msecs(jiffies) - hw->stats.n_reset_start; |
| 353 | do_div(seconds, 1000); |
| 354 | fhs->seconds_since_last_reset = seconds; |
| 355 | |
| 356 | return fhs; |
| 357 | } |
| 358 | |
| 359 | /* |
| 360 | * csio_set_rport_loss_tmo - Set the rport dev loss timeout |
| 361 | * @rport: fc rport. |
| 362 | * @timeout: new value for dev loss tmo. |
| 363 | * |
| 364 | * If timeout is non zero set the dev_loss_tmo to timeout, else set |
| 365 | * dev_loss_tmo to one. |
| 366 | */ |
| 367 | static void |
| 368 | csio_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout) |
| 369 | { |
| 370 | if (timeout) |
| 371 | rport->dev_loss_tmo = timeout; |
| 372 | else |
| 373 | rport->dev_loss_tmo = 1; |
| 374 | } |
| 375 | |
| 376 | static void |
| 377 | csio_vport_set_state(struct csio_lnode *ln) |
| 378 | { |
| 379 | struct fc_vport *fc_vport = ln->fc_vport; |
| 380 | struct csio_lnode *pln = ln->pln; |
| 381 | char state[16]; |
| 382 | |
| 383 | /* Set fc vport state based on phyiscal lnode */ |
| 384 | csio_lnode_state_to_str(pln, state); |
| 385 | if (strcmp(state, "READY")) { |
| 386 | fc_vport_set_state(fc_vport, FC_VPORT_LINKDOWN); |
| 387 | return; |
| 388 | } |
| 389 | |
| 390 | if (!(pln->flags & CSIO_LNF_NPIVSUPP)) { |
| 391 | fc_vport_set_state(fc_vport, FC_VPORT_NO_FABRIC_SUPP); |
| 392 | return; |
| 393 | } |
| 394 | |
| 395 | /* Set fc vport state based on virtual lnode */ |
| 396 | csio_lnode_state_to_str(ln, state); |
| 397 | if (strcmp(state, "READY")) { |
| 398 | fc_vport_set_state(fc_vport, FC_VPORT_LINKDOWN); |
| 399 | return; |
| 400 | } |
| 401 | fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE); |
| 402 | } |
| 403 | |
| 404 | static int |
| 405 | csio_fcoe_alloc_vnp(struct csio_hw *hw, struct csio_lnode *ln) |
| 406 | { |
| 407 | struct csio_lnode *pln; |
| 408 | struct csio_mb *mbp; |
| 409 | struct fw_fcoe_vnp_cmd *rsp; |
| 410 | int ret = 0; |
| 411 | int retry = 0; |
| 412 | |
| 413 | /* Issue VNP cmd to alloc vport */ |
| 414 | /* Allocate Mbox request */ |
| 415 | spin_lock_irq(&hw->lock); |
| 416 | mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); |
| 417 | if (!mbp) { |
| 418 | CSIO_INC_STATS(hw, n_err_nomem); |
| 419 | ret = -ENOMEM; |
| 420 | goto out; |
| 421 | } |
| 422 | |
| 423 | pln = ln->pln; |
| 424 | ln->fcf_flowid = pln->fcf_flowid; |
| 425 | ln->portid = pln->portid; |
| 426 | |
| 427 | csio_fcoe_vnp_alloc_init_mb(ln, mbp, CSIO_MB_DEFAULT_TMO, |
| 428 | pln->fcf_flowid, pln->vnp_flowid, 0, |
| 429 | csio_ln_wwnn(ln), csio_ln_wwpn(ln), NULL); |
| 430 | |
| 431 | for (retry = 0; retry < 3; retry++) { |
| 432 | /* FW is expected to complete vnp cmd in immediate mode |
| 433 | * without much delay. |
| 434 | * Otherwise, there will be increase in IO latency since HW |
| 435 | * lock is held till completion of vnp mbox cmd. |
| 436 | */ |
| 437 | ret = csio_mb_issue(hw, mbp); |
| 438 | if (ret != -EBUSY) |
| 439 | break; |
| 440 | |
| 441 | /* Retry if mbox returns busy */ |
| 442 | spin_unlock_irq(&hw->lock); |
| 443 | msleep(2000); |
| 444 | spin_lock_irq(&hw->lock); |
| 445 | } |
| 446 | |
| 447 | if (ret) { |
| 448 | csio_ln_err(ln, "Failed to issue mbox FCoE VNP command\n"); |
| 449 | goto out_free; |
| 450 | } |
| 451 | |
| 452 | /* Process Mbox response of VNP command */ |
| 453 | rsp = (struct fw_fcoe_vnp_cmd *)(mbp->mb); |
Hariprasad Shenai | e2ac962 | 2014-11-07 09:35:25 +0530 | [diff] [blame] | 454 | if (FW_CMD_RETVAL_G(ntohl(rsp->alloc_to_len16)) != FW_SUCCESS) { |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 455 | csio_ln_err(ln, "FCOE VNP ALLOC cmd returned 0x%x!\n", |
Hariprasad Shenai | e2ac962 | 2014-11-07 09:35:25 +0530 | [diff] [blame] | 456 | FW_CMD_RETVAL_G(ntohl(rsp->alloc_to_len16))); |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 457 | ret = -EINVAL; |
| 458 | goto out_free; |
| 459 | } |
| 460 | |
| 461 | ln->vnp_flowid = FW_FCOE_VNP_CMD_VNPI_GET( |
| 462 | ntohl(rsp->gen_wwn_to_vnpi)); |
| 463 | memcpy(csio_ln_wwnn(ln), rsp->vnport_wwnn, 8); |
| 464 | memcpy(csio_ln_wwpn(ln), rsp->vnport_wwpn, 8); |
| 465 | |
| 466 | csio_ln_dbg(ln, "FCOE VNPI: 0x%x\n", ln->vnp_flowid); |
| 467 | csio_ln_dbg(ln, "\tWWNN: %x%x%x%x%x%x%x%x\n", |
| 468 | ln->ln_sparm.wwnn[0], ln->ln_sparm.wwnn[1], |
| 469 | ln->ln_sparm.wwnn[2], ln->ln_sparm.wwnn[3], |
| 470 | ln->ln_sparm.wwnn[4], ln->ln_sparm.wwnn[5], |
| 471 | ln->ln_sparm.wwnn[6], ln->ln_sparm.wwnn[7]); |
| 472 | csio_ln_dbg(ln, "\tWWPN: %x%x%x%x%x%x%x%x\n", |
| 473 | ln->ln_sparm.wwpn[0], ln->ln_sparm.wwpn[1], |
| 474 | ln->ln_sparm.wwpn[2], ln->ln_sparm.wwpn[3], |
| 475 | ln->ln_sparm.wwpn[4], ln->ln_sparm.wwpn[5], |
| 476 | ln->ln_sparm.wwpn[6], ln->ln_sparm.wwpn[7]); |
| 477 | |
| 478 | out_free: |
| 479 | mempool_free(mbp, hw->mb_mempool); |
| 480 | out: |
| 481 | spin_unlock_irq(&hw->lock); |
| 482 | return ret; |
| 483 | } |
| 484 | |
| 485 | static int |
| 486 | csio_fcoe_free_vnp(struct csio_hw *hw, struct csio_lnode *ln) |
| 487 | { |
| 488 | struct csio_lnode *pln; |
| 489 | struct csio_mb *mbp; |
| 490 | struct fw_fcoe_vnp_cmd *rsp; |
| 491 | int ret = 0; |
| 492 | int retry = 0; |
| 493 | |
| 494 | /* Issue VNP cmd to free vport */ |
| 495 | /* Allocate Mbox request */ |
| 496 | |
| 497 | spin_lock_irq(&hw->lock); |
| 498 | mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC); |
| 499 | if (!mbp) { |
| 500 | CSIO_INC_STATS(hw, n_err_nomem); |
| 501 | ret = -ENOMEM; |
| 502 | goto out; |
| 503 | } |
| 504 | |
| 505 | pln = ln->pln; |
| 506 | |
| 507 | csio_fcoe_vnp_free_init_mb(ln, mbp, CSIO_MB_DEFAULT_TMO, |
| 508 | ln->fcf_flowid, ln->vnp_flowid, |
| 509 | NULL); |
| 510 | |
| 511 | for (retry = 0; retry < 3; retry++) { |
| 512 | ret = csio_mb_issue(hw, mbp); |
| 513 | if (ret != -EBUSY) |
| 514 | break; |
| 515 | |
| 516 | /* Retry if mbox returns busy */ |
| 517 | spin_unlock_irq(&hw->lock); |
| 518 | msleep(2000); |
| 519 | spin_lock_irq(&hw->lock); |
| 520 | } |
| 521 | |
| 522 | if (ret) { |
| 523 | csio_ln_err(ln, "Failed to issue mbox FCoE VNP command\n"); |
| 524 | goto out_free; |
| 525 | } |
| 526 | |
| 527 | /* Process Mbox response of VNP command */ |
| 528 | rsp = (struct fw_fcoe_vnp_cmd *)(mbp->mb); |
Hariprasad Shenai | e2ac962 | 2014-11-07 09:35:25 +0530 | [diff] [blame] | 529 | if (FW_CMD_RETVAL_G(ntohl(rsp->alloc_to_len16)) != FW_SUCCESS) { |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 530 | csio_ln_err(ln, "FCOE VNP FREE cmd returned 0x%x!\n", |
Hariprasad Shenai | e2ac962 | 2014-11-07 09:35:25 +0530 | [diff] [blame] | 531 | FW_CMD_RETVAL_G(ntohl(rsp->alloc_to_len16))); |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 532 | ret = -EINVAL; |
| 533 | } |
| 534 | |
| 535 | out_free: |
| 536 | mempool_free(mbp, hw->mb_mempool); |
| 537 | out: |
| 538 | spin_unlock_irq(&hw->lock); |
| 539 | return ret; |
| 540 | } |
| 541 | |
| 542 | static int |
| 543 | csio_vport_create(struct fc_vport *fc_vport, bool disable) |
| 544 | { |
| 545 | struct Scsi_Host *shost = fc_vport->shost; |
| 546 | struct csio_lnode *pln = shost_priv(shost); |
| 547 | struct csio_lnode *ln = NULL; |
| 548 | struct csio_hw *hw = csio_lnode_to_hw(pln); |
| 549 | uint8_t wwn[8]; |
| 550 | int ret = -1; |
| 551 | |
| 552 | ln = csio_shost_init(hw, &fc_vport->dev, false, pln); |
| 553 | if (!ln) |
| 554 | goto error; |
| 555 | |
| 556 | if (fc_vport->node_name != 0) { |
| 557 | u64_to_wwn(fc_vport->node_name, wwn); |
| 558 | |
| 559 | if (!CSIO_VALID_WWN(wwn)) { |
| 560 | csio_ln_err(ln, |
| 561 | "vport create failed. Invalid wwnn\n"); |
| 562 | goto error; |
| 563 | } |
| 564 | memcpy(csio_ln_wwnn(ln), wwn, 8); |
| 565 | } |
| 566 | |
| 567 | if (fc_vport->port_name != 0) { |
| 568 | u64_to_wwn(fc_vport->port_name, wwn); |
| 569 | |
| 570 | if (!CSIO_VALID_WWN(wwn)) { |
| 571 | csio_ln_err(ln, |
| 572 | "vport create failed. Invalid wwpn\n"); |
| 573 | goto error; |
| 574 | } |
| 575 | |
| 576 | if (csio_lnode_lookup_by_wwpn(hw, wwn)) { |
| 577 | csio_ln_err(ln, |
| 578 | "vport create failed. wwpn already exists\n"); |
| 579 | goto error; |
| 580 | } |
| 581 | memcpy(csio_ln_wwpn(ln), wwn, 8); |
| 582 | } |
| 583 | |
| 584 | fc_vport_set_state(fc_vport, FC_VPORT_INITIALIZING); |
| 585 | |
| 586 | if (csio_fcoe_alloc_vnp(hw, ln)) |
| 587 | goto error; |
| 588 | |
| 589 | *(struct csio_lnode **)fc_vport->dd_data = ln; |
| 590 | ln->fc_vport = fc_vport; |
| 591 | if (!fc_vport->node_name) |
| 592 | fc_vport->node_name = wwn_to_u64(csio_ln_wwnn(ln)); |
| 593 | if (!fc_vport->port_name) |
| 594 | fc_vport->port_name = wwn_to_u64(csio_ln_wwpn(ln)); |
| 595 | csio_fchost_attr_init(ln); |
| 596 | return 0; |
| 597 | error: |
| 598 | if (ln) |
| 599 | csio_shost_exit(ln); |
| 600 | |
| 601 | return ret; |
| 602 | } |
| 603 | |
| 604 | static int |
| 605 | csio_vport_delete(struct fc_vport *fc_vport) |
| 606 | { |
| 607 | struct csio_lnode *ln = *(struct csio_lnode **)fc_vport->dd_data; |
| 608 | struct Scsi_Host *shost = csio_ln_to_shost(ln); |
| 609 | struct csio_hw *hw = csio_lnode_to_hw(ln); |
| 610 | int rmv; |
| 611 | |
| 612 | spin_lock_irq(&hw->lock); |
| 613 | rmv = csio_is_hw_removing(hw); |
| 614 | spin_unlock_irq(&hw->lock); |
| 615 | |
| 616 | if (rmv) { |
| 617 | csio_shost_exit(ln); |
| 618 | return 0; |
| 619 | } |
| 620 | |
| 621 | /* Quiesce ios and send remove event to lnode */ |
| 622 | scsi_block_requests(shost); |
| 623 | spin_lock_irq(&hw->lock); |
| 624 | csio_scsim_cleanup_io_lnode(csio_hw_to_scsim(hw), ln); |
| 625 | csio_lnode_close(ln); |
| 626 | spin_unlock_irq(&hw->lock); |
| 627 | scsi_unblock_requests(shost); |
| 628 | |
| 629 | /* Free vnp */ |
| 630 | if (fc_vport->vport_state != FC_VPORT_DISABLED) |
| 631 | csio_fcoe_free_vnp(hw, ln); |
| 632 | |
| 633 | csio_shost_exit(ln); |
| 634 | return 0; |
| 635 | } |
| 636 | |
| 637 | static int |
| 638 | csio_vport_disable(struct fc_vport *fc_vport, bool disable) |
| 639 | { |
| 640 | struct csio_lnode *ln = *(struct csio_lnode **)fc_vport->dd_data; |
| 641 | struct Scsi_Host *shost = csio_ln_to_shost(ln); |
| 642 | struct csio_hw *hw = csio_lnode_to_hw(ln); |
| 643 | |
| 644 | /* disable vport */ |
| 645 | if (disable) { |
| 646 | /* Quiesce ios and send stop event to lnode */ |
| 647 | scsi_block_requests(shost); |
| 648 | spin_lock_irq(&hw->lock); |
| 649 | csio_scsim_cleanup_io_lnode(csio_hw_to_scsim(hw), ln); |
| 650 | csio_lnode_stop(ln); |
| 651 | spin_unlock_irq(&hw->lock); |
| 652 | scsi_unblock_requests(shost); |
| 653 | |
| 654 | /* Free vnp */ |
| 655 | csio_fcoe_free_vnp(hw, ln); |
| 656 | fc_vport_set_state(fc_vport, FC_VPORT_DISABLED); |
| 657 | csio_ln_err(ln, "vport disabled\n"); |
| 658 | return 0; |
| 659 | } else { |
| 660 | /* enable vport */ |
| 661 | fc_vport_set_state(fc_vport, FC_VPORT_INITIALIZING); |
| 662 | if (csio_fcoe_alloc_vnp(hw, ln)) { |
| 663 | csio_ln_err(ln, "vport enabled failed.\n"); |
| 664 | return -1; |
| 665 | } |
| 666 | csio_ln_err(ln, "vport enabled\n"); |
| 667 | return 0; |
| 668 | } |
| 669 | } |
| 670 | |
| 671 | static void |
| 672 | csio_dev_loss_tmo_callbk(struct fc_rport *rport) |
| 673 | { |
| 674 | struct csio_rnode *rn; |
| 675 | struct csio_hw *hw; |
| 676 | struct csio_lnode *ln; |
| 677 | |
| 678 | rn = *((struct csio_rnode **)rport->dd_data); |
| 679 | ln = csio_rnode_to_lnode(rn); |
| 680 | hw = csio_lnode_to_hw(ln); |
| 681 | |
| 682 | spin_lock_irq(&hw->lock); |
| 683 | |
| 684 | /* return if driver is being removed or same rnode comes back online */ |
| 685 | if (csio_is_hw_removing(hw) || csio_is_rnode_ready(rn)) |
| 686 | goto out; |
| 687 | |
| 688 | csio_ln_dbg(ln, "devloss timeout on rnode:%p portid:x%x flowid:x%x\n", |
| 689 | rn, rn->nport_id, csio_rn_flowid(rn)); |
| 690 | |
| 691 | CSIO_INC_STATS(ln, n_dev_loss_tmo); |
| 692 | |
| 693 | /* |
| 694 | * enqueue devloss event to event worker thread to serialize all |
| 695 | * rnode events. |
| 696 | */ |
| 697 | if (csio_enqueue_evt(hw, CSIO_EVT_DEV_LOSS, &rn, sizeof(rn))) { |
| 698 | CSIO_INC_STATS(hw, n_evt_drop); |
| 699 | goto out; |
| 700 | } |
| 701 | |
| 702 | if (!(hw->flags & CSIO_HWF_FWEVT_PENDING)) { |
| 703 | hw->flags |= CSIO_HWF_FWEVT_PENDING; |
| 704 | spin_unlock_irq(&hw->lock); |
| 705 | schedule_work(&hw->evtq_work); |
| 706 | return; |
| 707 | } |
| 708 | |
| 709 | out: |
| 710 | spin_unlock_irq(&hw->lock); |
| 711 | } |
| 712 | |
| 713 | /* FC transport functions template - Physical port */ |
| 714 | struct fc_function_template csio_fc_transport_funcs = { |
| 715 | .show_host_node_name = 1, |
| 716 | .show_host_port_name = 1, |
| 717 | .show_host_supported_classes = 1, |
| 718 | .show_host_supported_fc4s = 1, |
| 719 | .show_host_maxframe_size = 1, |
| 720 | |
| 721 | .get_host_port_id = csio_get_host_port_id, |
| 722 | .show_host_port_id = 1, |
| 723 | |
| 724 | .get_host_port_type = csio_get_host_port_type, |
| 725 | .show_host_port_type = 1, |
| 726 | |
| 727 | .get_host_port_state = csio_get_host_port_state, |
| 728 | .show_host_port_state = 1, |
| 729 | |
| 730 | .show_host_active_fc4s = 1, |
| 731 | .get_host_speed = csio_get_host_speed, |
| 732 | .show_host_speed = 1, |
| 733 | .get_host_fabric_name = csio_get_host_fabric_name, |
| 734 | .show_host_fabric_name = 1, |
| 735 | |
| 736 | .get_fc_host_stats = csio_get_stats, |
| 737 | |
| 738 | .dd_fcrport_size = sizeof(struct csio_rnode *), |
| 739 | .show_rport_maxframe_size = 1, |
| 740 | .show_rport_supported_classes = 1, |
| 741 | |
| 742 | .set_rport_dev_loss_tmo = csio_set_rport_loss_tmo, |
| 743 | .show_rport_dev_loss_tmo = 1, |
| 744 | |
| 745 | .show_starget_port_id = 1, |
| 746 | .show_starget_node_name = 1, |
| 747 | .show_starget_port_name = 1, |
| 748 | |
| 749 | .dev_loss_tmo_callbk = csio_dev_loss_tmo_callbk, |
| 750 | .dd_fcvport_size = sizeof(struct csio_lnode *), |
| 751 | |
| 752 | .vport_create = csio_vport_create, |
| 753 | .vport_disable = csio_vport_disable, |
| 754 | .vport_delete = csio_vport_delete, |
| 755 | }; |
| 756 | |
| 757 | /* FC transport functions template - Virtual port */ |
| 758 | struct fc_function_template csio_fc_transport_vport_funcs = { |
| 759 | .show_host_node_name = 1, |
| 760 | .show_host_port_name = 1, |
| 761 | .show_host_supported_classes = 1, |
| 762 | .show_host_supported_fc4s = 1, |
| 763 | .show_host_maxframe_size = 1, |
| 764 | |
| 765 | .get_host_port_id = csio_get_host_port_id, |
| 766 | .show_host_port_id = 1, |
| 767 | |
| 768 | .get_host_port_type = csio_get_host_port_type, |
| 769 | .show_host_port_type = 1, |
| 770 | |
| 771 | .get_host_port_state = csio_get_host_port_state, |
| 772 | .show_host_port_state = 1, |
| 773 | .show_host_active_fc4s = 1, |
| 774 | |
| 775 | .get_host_speed = csio_get_host_speed, |
| 776 | .show_host_speed = 1, |
| 777 | |
| 778 | .get_host_fabric_name = csio_get_host_fabric_name, |
| 779 | .show_host_fabric_name = 1, |
| 780 | |
| 781 | .get_fc_host_stats = csio_get_stats, |
| 782 | |
| 783 | .dd_fcrport_size = sizeof(struct csio_rnode *), |
| 784 | .show_rport_maxframe_size = 1, |
| 785 | .show_rport_supported_classes = 1, |
| 786 | |
| 787 | .set_rport_dev_loss_tmo = csio_set_rport_loss_tmo, |
| 788 | .show_rport_dev_loss_tmo = 1, |
| 789 | |
| 790 | .show_starget_port_id = 1, |
| 791 | .show_starget_node_name = 1, |
| 792 | .show_starget_port_name = 1, |
| 793 | |
| 794 | .dev_loss_tmo_callbk = csio_dev_loss_tmo_callbk, |
| 795 | |
| 796 | }; |