142e9a92fSRobert Love /* 242e9a92fSRobert Love * Copyright(c) 2007 Intel Corporation. All rights reserved. 342e9a92fSRobert Love * 442e9a92fSRobert Love * This program is free software; you can redistribute it and/or modify it 542e9a92fSRobert Love * under the terms and conditions of the GNU General Public License, 642e9a92fSRobert Love * version 2, as published by the Free Software Foundation. 742e9a92fSRobert Love * 842e9a92fSRobert Love * This program is distributed in the hope it will be useful, but WITHOUT 942e9a92fSRobert Love * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1042e9a92fSRobert Love * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 1142e9a92fSRobert Love * more details. 1242e9a92fSRobert Love * 1342e9a92fSRobert Love * You should have received a copy of the GNU General Public License along with 1442e9a92fSRobert Love * this program; if not, write to the Free Software Foundation, Inc., 1542e9a92fSRobert Love * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 1642e9a92fSRobert Love * 1742e9a92fSRobert Love * Maintained at www.Open-FCoE.org 1842e9a92fSRobert Love */ 1942e9a92fSRobert Love 2042e9a92fSRobert Love /* 2142e9a92fSRobert Love * PORT LOCKING NOTES 2242e9a92fSRobert Love * 2342e9a92fSRobert Love * These comments only apply to the 'port code' which consists of the lport, 2442e9a92fSRobert Love * disc and rport blocks. 2542e9a92fSRobert Love * 2642e9a92fSRobert Love * MOTIVATION 2742e9a92fSRobert Love * 2842e9a92fSRobert Love * The lport, disc and rport blocks all have mutexes that are used to protect 2942e9a92fSRobert Love * those objects. The main motivation for these locks is to prevent from 3042e9a92fSRobert Love * having an lport reset just before we send a frame. In that scenario the 3142e9a92fSRobert Love * lport's FID would get set to zero and then we'd send a frame with an 3242e9a92fSRobert Love * invalid SID. We also need to ensure that states don't change unexpectedly 3342e9a92fSRobert Love * while processing another state. 3442e9a92fSRobert Love * 3542e9a92fSRobert Love * HEIRARCHY 3642e9a92fSRobert Love * 3742e9a92fSRobert Love * The following heirarchy defines the locking rules. A greater lock 3842e9a92fSRobert Love * may be held before acquiring a lesser lock, but a lesser lock should never 3942e9a92fSRobert Love * be held while attempting to acquire a greater lock. Here is the heirarchy- 4042e9a92fSRobert Love * 4142e9a92fSRobert Love * lport > disc, lport > rport, disc > rport 4242e9a92fSRobert Love * 4342e9a92fSRobert Love * CALLBACKS 4442e9a92fSRobert Love * 4542e9a92fSRobert Love * The callbacks cause complications with this scheme. There is a callback 4642e9a92fSRobert Love * from the rport (to either lport or disc) and a callback from disc 4742e9a92fSRobert Love * (to the lport). 4842e9a92fSRobert Love * 4942e9a92fSRobert Love * As rports exit the rport state machine a callback is made to the owner of 5042e9a92fSRobert Love * the rport to notify success or failure. Since the callback is likely to 5142e9a92fSRobert Love * cause the lport or disc to grab its lock we cannot hold the rport lock 5242e9a92fSRobert Love * while making the callback. To ensure that the rport is not free'd while 5342e9a92fSRobert Love * processing the callback the rport callbacks are serialized through a 5442e9a92fSRobert Love * single-threaded workqueue. An rport would never be free'd while in a 5542e9a92fSRobert Love * callback handler becuase no other rport work in this queue can be executed 5642e9a92fSRobert Love * at the same time. 5742e9a92fSRobert Love * 5842e9a92fSRobert Love * When discovery succeeds or fails a callback is made to the lport as 5942e9a92fSRobert Love * notification. Currently, succesful discovery causes the lport to take no 6042e9a92fSRobert Love * action. A failure will cause the lport to reset. There is likely a circular 6142e9a92fSRobert Love * locking problem with this implementation. 6242e9a92fSRobert Love */ 6342e9a92fSRobert Love 6442e9a92fSRobert Love /* 6542e9a92fSRobert Love * LPORT LOCKING 6642e9a92fSRobert Love * 6742e9a92fSRobert Love * The critical sections protected by the lport's mutex are quite broad and 6842e9a92fSRobert Love * may be improved upon in the future. The lport code and its locking doesn't 6942e9a92fSRobert Love * influence the I/O path, so excessive locking doesn't penalize I/O 7042e9a92fSRobert Love * performance. 7142e9a92fSRobert Love * 7242e9a92fSRobert Love * The strategy is to lock whenever processing a request or response. Note 7342e9a92fSRobert Love * that every _enter_* function corresponds to a state change. They generally 7442e9a92fSRobert Love * change the lports state and then send a request out on the wire. We lock 7542e9a92fSRobert Love * before calling any of these functions to protect that state change. This 7642e9a92fSRobert Love * means that the entry points into the lport block manage the locks while 7742e9a92fSRobert Love * the state machine can transition between states (i.e. _enter_* functions) 7842e9a92fSRobert Love * while always staying protected. 7942e9a92fSRobert Love * 8042e9a92fSRobert Love * When handling responses we also hold the lport mutex broadly. When the 8142e9a92fSRobert Love * lport receives the response frame it locks the mutex and then calls the 8242e9a92fSRobert Love * appropriate handler for the particuar response. Generally a response will 8342e9a92fSRobert Love * trigger a state change and so the lock must already be held. 8442e9a92fSRobert Love * 8542e9a92fSRobert Love * Retries also have to consider the locking. The retries occur from a work 8642e9a92fSRobert Love * context and the work function will lock the lport and then retry the state 8742e9a92fSRobert Love * (i.e. _enter_* function). 8842e9a92fSRobert Love */ 8942e9a92fSRobert Love 9042e9a92fSRobert Love #include <linux/timer.h> 9142e9a92fSRobert Love #include <asm/unaligned.h> 9242e9a92fSRobert Love 9342e9a92fSRobert Love #include <scsi/fc/fc_gs.h> 9442e9a92fSRobert Love 9542e9a92fSRobert Love #include <scsi/libfc.h> 9642e9a92fSRobert Love #include <scsi/fc_encode.h> 9742e9a92fSRobert Love 9842e9a92fSRobert Love /* Fabric IDs to use for point-to-point mode, chosen on whims. */ 9942e9a92fSRobert Love #define FC_LOCAL_PTP_FID_LO 0x010101 10042e9a92fSRobert Love #define FC_LOCAL_PTP_FID_HI 0x010102 10142e9a92fSRobert Love 10242e9a92fSRobert Love #define DNS_DELAY 3 /* Discovery delay after RSCN (in seconds)*/ 10342e9a92fSRobert Love 10442e9a92fSRobert Love static int fc_lport_debug; 10542e9a92fSRobert Love 10642e9a92fSRobert Love #define FC_DEBUG_LPORT(fmt...) \ 10742e9a92fSRobert Love do { \ 10842e9a92fSRobert Love if (fc_lport_debug) \ 10942e9a92fSRobert Love FC_DBG(fmt); \ 11042e9a92fSRobert Love } while (0) 11142e9a92fSRobert Love 11242e9a92fSRobert Love static void fc_lport_error(struct fc_lport *, struct fc_frame *); 11342e9a92fSRobert Love 11442e9a92fSRobert Love static void fc_lport_enter_reset(struct fc_lport *); 11542e9a92fSRobert Love static void fc_lport_enter_flogi(struct fc_lport *); 11642e9a92fSRobert Love static void fc_lport_enter_dns(struct fc_lport *); 11742e9a92fSRobert Love static void fc_lport_enter_rpn_id(struct fc_lport *); 11842e9a92fSRobert Love static void fc_lport_enter_rft_id(struct fc_lport *); 11942e9a92fSRobert Love static void fc_lport_enter_scr(struct fc_lport *); 12042e9a92fSRobert Love static void fc_lport_enter_ready(struct fc_lport *); 12142e9a92fSRobert Love static void fc_lport_enter_logo(struct fc_lport *); 12242e9a92fSRobert Love 12342e9a92fSRobert Love static const char *fc_lport_state_names[] = { 12442e9a92fSRobert Love [LPORT_ST_NONE] = "none", 12542e9a92fSRobert Love [LPORT_ST_FLOGI] = "FLOGI", 12642e9a92fSRobert Love [LPORT_ST_DNS] = "dNS", 12742e9a92fSRobert Love [LPORT_ST_RPN_ID] = "RPN_ID", 12842e9a92fSRobert Love [LPORT_ST_RFT_ID] = "RFT_ID", 12942e9a92fSRobert Love [LPORT_ST_SCR] = "SCR", 13042e9a92fSRobert Love [LPORT_ST_READY] = "Ready", 13142e9a92fSRobert Love [LPORT_ST_LOGO] = "LOGO", 13242e9a92fSRobert Love [LPORT_ST_RESET] = "reset", 13342e9a92fSRobert Love }; 13442e9a92fSRobert Love 13542e9a92fSRobert Love static int fc_frame_drop(struct fc_lport *lport, struct fc_frame *fp) 13642e9a92fSRobert Love { 13742e9a92fSRobert Love fc_frame_free(fp); 13842e9a92fSRobert Love return 0; 13942e9a92fSRobert Love } 14042e9a92fSRobert Love 14142e9a92fSRobert Love /** 14234f42a07SRobert Love * fc_lport_rport_callback() - Event handler for rport events 14342e9a92fSRobert Love * @lport: The lport which is receiving the event 14442e9a92fSRobert Love * @rport: The rport which the event has occured on 14542e9a92fSRobert Love * @event: The event that occured 14642e9a92fSRobert Love * 14742e9a92fSRobert Love * Locking Note: The rport lock should not be held when calling 14842e9a92fSRobert Love * this function. 14942e9a92fSRobert Love */ 15042e9a92fSRobert Love static void fc_lport_rport_callback(struct fc_lport *lport, 15142e9a92fSRobert Love struct fc_rport *rport, 15242e9a92fSRobert Love enum fc_rport_event event) 15342e9a92fSRobert Love { 15442e9a92fSRobert Love FC_DEBUG_LPORT("Received a %d event for port (%6x)\n", event, 15542e9a92fSRobert Love rport->port_id); 15642e9a92fSRobert Love 15742e9a92fSRobert Love switch (event) { 15842e9a92fSRobert Love case RPORT_EV_CREATED: 15942e9a92fSRobert Love if (rport->port_id == FC_FID_DIR_SERV) { 16042e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 16142e9a92fSRobert Love if (lport->state == LPORT_ST_DNS) { 16242e9a92fSRobert Love lport->dns_rp = rport; 16342e9a92fSRobert Love fc_lport_enter_rpn_id(lport); 16442e9a92fSRobert Love } else { 16542e9a92fSRobert Love FC_DEBUG_LPORT("Received an CREATED event on " 16642e9a92fSRobert Love "port (%6x) for the directory " 16742e9a92fSRobert Love "server, but the lport is not " 16842e9a92fSRobert Love "in the DNS state, it's in the " 16942e9a92fSRobert Love "%d state", rport->port_id, 17042e9a92fSRobert Love lport->state); 17142e9a92fSRobert Love lport->tt.rport_logoff(rport); 17242e9a92fSRobert Love } 17342e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 17442e9a92fSRobert Love } else 17542e9a92fSRobert Love FC_DEBUG_LPORT("Received an event for port (%6x) " 17642e9a92fSRobert Love "which is not the directory server\n", 17742e9a92fSRobert Love rport->port_id); 17842e9a92fSRobert Love break; 17942e9a92fSRobert Love case RPORT_EV_LOGO: 18042e9a92fSRobert Love case RPORT_EV_FAILED: 18142e9a92fSRobert Love case RPORT_EV_STOP: 18242e9a92fSRobert Love if (rport->port_id == FC_FID_DIR_SERV) { 18342e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 18442e9a92fSRobert Love lport->dns_rp = NULL; 18542e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 18642e9a92fSRobert Love 18742e9a92fSRobert Love } else 18842e9a92fSRobert Love FC_DEBUG_LPORT("Received an event for port (%6x) " 18942e9a92fSRobert Love "which is not the directory server\n", 19042e9a92fSRobert Love rport->port_id); 19142e9a92fSRobert Love break; 19242e9a92fSRobert Love case RPORT_EV_NONE: 19342e9a92fSRobert Love break; 19442e9a92fSRobert Love } 19542e9a92fSRobert Love } 19642e9a92fSRobert Love 19742e9a92fSRobert Love /** 19834f42a07SRobert Love * fc_lport_state() - Return a string which represents the lport's state 19942e9a92fSRobert Love * @lport: The lport whose state is to converted to a string 20042e9a92fSRobert Love */ 20142e9a92fSRobert Love static const char *fc_lport_state(struct fc_lport *lport) 20242e9a92fSRobert Love { 20342e9a92fSRobert Love const char *cp; 20442e9a92fSRobert Love 20542e9a92fSRobert Love cp = fc_lport_state_names[lport->state]; 20642e9a92fSRobert Love if (!cp) 20742e9a92fSRobert Love cp = "unknown"; 20842e9a92fSRobert Love return cp; 20942e9a92fSRobert Love } 21042e9a92fSRobert Love 21142e9a92fSRobert Love /** 21234f42a07SRobert Love * fc_lport_ptp_setup() - Create an rport for point-to-point mode 21342e9a92fSRobert Love * @lport: The lport to attach the ptp rport to 21442e9a92fSRobert Love * @fid: The FID of the ptp rport 21542e9a92fSRobert Love * @remote_wwpn: The WWPN of the ptp rport 21642e9a92fSRobert Love * @remote_wwnn: The WWNN of the ptp rport 21742e9a92fSRobert Love */ 21842e9a92fSRobert Love static void fc_lport_ptp_setup(struct fc_lport *lport, 21942e9a92fSRobert Love u32 remote_fid, u64 remote_wwpn, 22042e9a92fSRobert Love u64 remote_wwnn) 22142e9a92fSRobert Love { 22242e9a92fSRobert Love struct fc_disc_port dp; 22342e9a92fSRobert Love 22442e9a92fSRobert Love dp.lp = lport; 22542e9a92fSRobert Love dp.ids.port_id = remote_fid; 22642e9a92fSRobert Love dp.ids.port_name = remote_wwpn; 22742e9a92fSRobert Love dp.ids.node_name = remote_wwnn; 22842e9a92fSRobert Love dp.ids.roles = FC_RPORT_ROLE_UNKNOWN; 22942e9a92fSRobert Love 23042e9a92fSRobert Love if (lport->ptp_rp) { 23142e9a92fSRobert Love lport->tt.rport_logoff(lport->ptp_rp); 23242e9a92fSRobert Love lport->ptp_rp = NULL; 23342e9a92fSRobert Love } 23442e9a92fSRobert Love 2355101ff99SRobert Love lport->ptp_rp = lport->tt.rport_create(&dp); 23642e9a92fSRobert Love 23742e9a92fSRobert Love lport->tt.rport_login(lport->ptp_rp); 23842e9a92fSRobert Love 23942e9a92fSRobert Love fc_lport_enter_ready(lport); 24042e9a92fSRobert Love } 24142e9a92fSRobert Love 24242e9a92fSRobert Love void fc_get_host_port_type(struct Scsi_Host *shost) 24342e9a92fSRobert Love { 24442e9a92fSRobert Love /* TODO - currently just NPORT */ 24542e9a92fSRobert Love fc_host_port_type(shost) = FC_PORTTYPE_NPORT; 24642e9a92fSRobert Love } 24742e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_port_type); 24842e9a92fSRobert Love 24942e9a92fSRobert Love void fc_get_host_port_state(struct Scsi_Host *shost) 25042e9a92fSRobert Love { 25142e9a92fSRobert Love struct fc_lport *lp = shost_priv(shost); 25242e9a92fSRobert Love 253bc0e17f6SVasu Dev if (lp->link_up) 25442e9a92fSRobert Love fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; 25542e9a92fSRobert Love else 25642e9a92fSRobert Love fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; 25742e9a92fSRobert Love } 25842e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_port_state); 25942e9a92fSRobert Love 26042e9a92fSRobert Love void fc_get_host_speed(struct Scsi_Host *shost) 26142e9a92fSRobert Love { 26242e9a92fSRobert Love struct fc_lport *lport = shost_priv(shost); 26342e9a92fSRobert Love 26442e9a92fSRobert Love fc_host_speed(shost) = lport->link_speed; 26542e9a92fSRobert Love } 26642e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_speed); 26742e9a92fSRobert Love 26842e9a92fSRobert Love struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost) 26942e9a92fSRobert Love { 27042e9a92fSRobert Love struct fc_host_statistics *fcoe_stats; 27142e9a92fSRobert Love struct fc_lport *lp = shost_priv(shost); 27242e9a92fSRobert Love struct timespec v0, v1; 273582b45bcSRobert Love unsigned int cpu; 27442e9a92fSRobert Love 27542e9a92fSRobert Love fcoe_stats = &lp->host_stats; 27642e9a92fSRobert Love memset(fcoe_stats, 0, sizeof(struct fc_host_statistics)); 27742e9a92fSRobert Love 27842e9a92fSRobert Love jiffies_to_timespec(jiffies, &v0); 27942e9a92fSRobert Love jiffies_to_timespec(lp->boot_time, &v1); 28042e9a92fSRobert Love fcoe_stats->seconds_since_last_reset = (v0.tv_sec - v1.tv_sec); 28142e9a92fSRobert Love 282582b45bcSRobert Love for_each_possible_cpu(cpu) { 283582b45bcSRobert Love struct fcoe_dev_stats *stats; 284582b45bcSRobert Love 285582b45bcSRobert Love stats = per_cpu_ptr(lp->dev_stats, cpu); 286582b45bcSRobert Love 28742e9a92fSRobert Love fcoe_stats->tx_frames += stats->TxFrames; 28842e9a92fSRobert Love fcoe_stats->tx_words += stats->TxWords; 28942e9a92fSRobert Love fcoe_stats->rx_frames += stats->RxFrames; 29042e9a92fSRobert Love fcoe_stats->rx_words += stats->RxWords; 29142e9a92fSRobert Love fcoe_stats->error_frames += stats->ErrorFrames; 29242e9a92fSRobert Love fcoe_stats->invalid_crc_count += stats->InvalidCRCCount; 29342e9a92fSRobert Love fcoe_stats->fcp_input_requests += stats->InputRequests; 29442e9a92fSRobert Love fcoe_stats->fcp_output_requests += stats->OutputRequests; 29542e9a92fSRobert Love fcoe_stats->fcp_control_requests += stats->ControlRequests; 29642e9a92fSRobert Love fcoe_stats->fcp_input_megabytes += stats->InputMegabytes; 29742e9a92fSRobert Love fcoe_stats->fcp_output_megabytes += stats->OutputMegabytes; 29842e9a92fSRobert Love fcoe_stats->link_failure_count += stats->LinkFailureCount; 29942e9a92fSRobert Love } 30042e9a92fSRobert Love fcoe_stats->lip_count = -1; 30142e9a92fSRobert Love fcoe_stats->nos_count = -1; 30242e9a92fSRobert Love fcoe_stats->loss_of_sync_count = -1; 30342e9a92fSRobert Love fcoe_stats->loss_of_signal_count = -1; 30442e9a92fSRobert Love fcoe_stats->prim_seq_protocol_err_count = -1; 30542e9a92fSRobert Love fcoe_stats->dumped_frames = -1; 30642e9a92fSRobert Love return fcoe_stats; 30742e9a92fSRobert Love } 30842e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_stats); 30942e9a92fSRobert Love 31042e9a92fSRobert Love /* 31142e9a92fSRobert Love * Fill in FLOGI command for request. 31242e9a92fSRobert Love */ 31342e9a92fSRobert Love static void 31442e9a92fSRobert Love fc_lport_flogi_fill(struct fc_lport *lport, struct fc_els_flogi *flogi, 31542e9a92fSRobert Love unsigned int op) 31642e9a92fSRobert Love { 31742e9a92fSRobert Love struct fc_els_csp *sp; 31842e9a92fSRobert Love struct fc_els_cssp *cp; 31942e9a92fSRobert Love 32042e9a92fSRobert Love memset(flogi, 0, sizeof(*flogi)); 32142e9a92fSRobert Love flogi->fl_cmd = (u8) op; 32242e9a92fSRobert Love put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn); 32342e9a92fSRobert Love put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn); 32442e9a92fSRobert Love sp = &flogi->fl_csp; 32542e9a92fSRobert Love sp->sp_hi_ver = 0x20; 32642e9a92fSRobert Love sp->sp_lo_ver = 0x20; 32742e9a92fSRobert Love sp->sp_bb_cred = htons(10); /* this gets set by gateway */ 32842e9a92fSRobert Love sp->sp_bb_data = htons((u16) lport->mfs); 32942e9a92fSRobert Love cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */ 33042e9a92fSRobert Love cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ); 33142e9a92fSRobert Love if (op != ELS_FLOGI) { 33242e9a92fSRobert Love sp->sp_features = htons(FC_SP_FT_CIRO); 33342e9a92fSRobert Love sp->sp_tot_seq = htons(255); /* seq. we accept */ 33442e9a92fSRobert Love sp->sp_rel_off = htons(0x1f); 33542e9a92fSRobert Love sp->sp_e_d_tov = htonl(lport->e_d_tov); 33642e9a92fSRobert Love 33742e9a92fSRobert Love cp->cp_rdfs = htons((u16) lport->mfs); 33842e9a92fSRobert Love cp->cp_con_seq = htons(255); 33942e9a92fSRobert Love cp->cp_open_seq = 1; 34042e9a92fSRobert Love } 34142e9a92fSRobert Love } 34242e9a92fSRobert Love 34342e9a92fSRobert Love /* 34442e9a92fSRobert Love * Add a supported FC-4 type. 34542e9a92fSRobert Love */ 34642e9a92fSRobert Love static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type) 34742e9a92fSRobert Love { 34842e9a92fSRobert Love __be32 *mp; 34942e9a92fSRobert Love 35042e9a92fSRobert Love mp = &lport->fcts.ff_type_map[type / FC_NS_BPW]; 35142e9a92fSRobert Love *mp = htonl(ntohl(*mp) | 1UL << (type % FC_NS_BPW)); 35242e9a92fSRobert Love } 35342e9a92fSRobert Love 35442e9a92fSRobert Love /** 35534f42a07SRobert Love * fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report. 35642e9a92fSRobert Love * @lport: Fibre Channel local port recieving the RLIR 35742e9a92fSRobert Love * @sp: current sequence in the RLIR exchange 35842e9a92fSRobert Love * @fp: RLIR request frame 35942e9a92fSRobert Love * 36042e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 36142e9a92fSRobert Love * this function. 36242e9a92fSRobert Love */ 36342e9a92fSRobert Love static void fc_lport_recv_rlir_req(struct fc_seq *sp, struct fc_frame *fp, 36442e9a92fSRobert Love struct fc_lport *lport) 36542e9a92fSRobert Love { 36642e9a92fSRobert Love FC_DEBUG_LPORT("Received RLIR request while in state %s\n", 36742e9a92fSRobert Love fc_lport_state(lport)); 36842e9a92fSRobert Love 36942e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); 37042e9a92fSRobert Love fc_frame_free(fp); 37142e9a92fSRobert Love } 37242e9a92fSRobert Love 37342e9a92fSRobert Love /** 37434f42a07SRobert Love * fc_lport_recv_echo_req() - Handle received ECHO request 37542e9a92fSRobert Love * @lport: Fibre Channel local port recieving the ECHO 37642e9a92fSRobert Love * @sp: current sequence in the ECHO exchange 37742e9a92fSRobert Love * @fp: ECHO request frame 37842e9a92fSRobert Love * 37942e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 38042e9a92fSRobert Love * this function. 38142e9a92fSRobert Love */ 38242e9a92fSRobert Love static void fc_lport_recv_echo_req(struct fc_seq *sp, struct fc_frame *in_fp, 38342e9a92fSRobert Love struct fc_lport *lport) 38442e9a92fSRobert Love { 38542e9a92fSRobert Love struct fc_frame *fp; 38642e9a92fSRobert Love struct fc_exch *ep = fc_seq_exch(sp); 38742e9a92fSRobert Love unsigned int len; 38842e9a92fSRobert Love void *pp; 38942e9a92fSRobert Love void *dp; 39042e9a92fSRobert Love u32 f_ctl; 39142e9a92fSRobert Love 39242e9a92fSRobert Love FC_DEBUG_LPORT("Received RLIR request while in state %s\n", 39342e9a92fSRobert Love fc_lport_state(lport)); 39442e9a92fSRobert Love 39542e9a92fSRobert Love len = fr_len(in_fp) - sizeof(struct fc_frame_header); 39642e9a92fSRobert Love pp = fc_frame_payload_get(in_fp, len); 39742e9a92fSRobert Love 39842e9a92fSRobert Love if (len < sizeof(__be32)) 39942e9a92fSRobert Love len = sizeof(__be32); 40042e9a92fSRobert Love 40142e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 40242e9a92fSRobert Love if (fp) { 40342e9a92fSRobert Love dp = fc_frame_payload_get(fp, len); 40442e9a92fSRobert Love memcpy(dp, pp, len); 40542e9a92fSRobert Love *((u32 *)dp) = htonl(ELS_LS_ACC << 24); 40642e9a92fSRobert Love sp = lport->tt.seq_start_next(sp); 40742e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; 40842e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 40942e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 41042e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 41142e9a92fSRobert Love } 41242e9a92fSRobert Love fc_frame_free(in_fp); 41342e9a92fSRobert Love } 41442e9a92fSRobert Love 41542e9a92fSRobert Love /** 41634f42a07SRobert Love * fc_lport_recv_echo_req() - Handle received Request Node ID data request 41742e9a92fSRobert Love * @lport: Fibre Channel local port recieving the RNID 41842e9a92fSRobert Love * @sp: current sequence in the RNID exchange 41942e9a92fSRobert Love * @fp: RNID request frame 42042e9a92fSRobert Love * 42142e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 42242e9a92fSRobert Love * this function. 42342e9a92fSRobert Love */ 42442e9a92fSRobert Love static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp, 42542e9a92fSRobert Love struct fc_lport *lport) 42642e9a92fSRobert Love { 42742e9a92fSRobert Love struct fc_frame *fp; 42842e9a92fSRobert Love struct fc_exch *ep = fc_seq_exch(sp); 42942e9a92fSRobert Love struct fc_els_rnid *req; 43042e9a92fSRobert Love struct { 43142e9a92fSRobert Love struct fc_els_rnid_resp rnid; 43242e9a92fSRobert Love struct fc_els_rnid_cid cid; 43342e9a92fSRobert Love struct fc_els_rnid_gen gen; 43442e9a92fSRobert Love } *rp; 43542e9a92fSRobert Love struct fc_seq_els_data rjt_data; 43642e9a92fSRobert Love u8 fmt; 43742e9a92fSRobert Love size_t len; 43842e9a92fSRobert Love u32 f_ctl; 43942e9a92fSRobert Love 44042e9a92fSRobert Love FC_DEBUG_LPORT("Received RNID request while in state %s\n", 44142e9a92fSRobert Love fc_lport_state(lport)); 44242e9a92fSRobert Love 44342e9a92fSRobert Love req = fc_frame_payload_get(in_fp, sizeof(*req)); 44442e9a92fSRobert Love if (!req) { 44542e9a92fSRobert Love rjt_data.fp = NULL; 44642e9a92fSRobert Love rjt_data.reason = ELS_RJT_LOGIC; 44742e9a92fSRobert Love rjt_data.explan = ELS_EXPL_NONE; 44842e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); 44942e9a92fSRobert Love } else { 45042e9a92fSRobert Love fmt = req->rnid_fmt; 45142e9a92fSRobert Love len = sizeof(*rp); 45242e9a92fSRobert Love if (fmt != ELS_RNIDF_GEN || 45342e9a92fSRobert Love ntohl(lport->rnid_gen.rnid_atype) == 0) { 45442e9a92fSRobert Love fmt = ELS_RNIDF_NONE; /* nothing to provide */ 45542e9a92fSRobert Love len -= sizeof(rp->gen); 45642e9a92fSRobert Love } 45742e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 45842e9a92fSRobert Love if (fp) { 45942e9a92fSRobert Love rp = fc_frame_payload_get(fp, len); 46042e9a92fSRobert Love memset(rp, 0, len); 46142e9a92fSRobert Love rp->rnid.rnid_cmd = ELS_LS_ACC; 46242e9a92fSRobert Love rp->rnid.rnid_fmt = fmt; 46342e9a92fSRobert Love rp->rnid.rnid_cid_len = sizeof(rp->cid); 46442e9a92fSRobert Love rp->cid.rnid_wwpn = htonll(lport->wwpn); 46542e9a92fSRobert Love rp->cid.rnid_wwnn = htonll(lport->wwnn); 46642e9a92fSRobert Love if (fmt == ELS_RNIDF_GEN) { 46742e9a92fSRobert Love rp->rnid.rnid_sid_len = sizeof(rp->gen); 46842e9a92fSRobert Love memcpy(&rp->gen, &lport->rnid_gen, 46942e9a92fSRobert Love sizeof(rp->gen)); 47042e9a92fSRobert Love } 47142e9a92fSRobert Love sp = lport->tt.seq_start_next(sp); 47242e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; 47342e9a92fSRobert Love f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; 47442e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 47542e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 47642e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 47742e9a92fSRobert Love } 47842e9a92fSRobert Love } 47942e9a92fSRobert Love fc_frame_free(in_fp); 48042e9a92fSRobert Love } 48142e9a92fSRobert Love 48242e9a92fSRobert Love /** 48334f42a07SRobert Love * fc_lport_recv_adisc_req() - Handle received Address Discovery Request 48442e9a92fSRobert Love * @lport: Fibre Channel local port recieving the ADISC 48542e9a92fSRobert Love * @sp: current sequence in the ADISC exchange 48642e9a92fSRobert Love * @fp: ADISC request frame 48742e9a92fSRobert Love * 48842e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 48942e9a92fSRobert Love * this function. 49042e9a92fSRobert Love */ 49142e9a92fSRobert Love static void fc_lport_recv_adisc_req(struct fc_seq *sp, struct fc_frame *in_fp, 49242e9a92fSRobert Love struct fc_lport *lport) 49342e9a92fSRobert Love { 49442e9a92fSRobert Love struct fc_frame *fp; 49542e9a92fSRobert Love struct fc_exch *ep = fc_seq_exch(sp); 49642e9a92fSRobert Love struct fc_els_adisc *req, *rp; 49742e9a92fSRobert Love struct fc_seq_els_data rjt_data; 49842e9a92fSRobert Love size_t len; 49942e9a92fSRobert Love u32 f_ctl; 50042e9a92fSRobert Love 50142e9a92fSRobert Love FC_DEBUG_LPORT("Received ADISC request while in state %s\n", 50242e9a92fSRobert Love fc_lport_state(lport)); 50342e9a92fSRobert Love 50442e9a92fSRobert Love req = fc_frame_payload_get(in_fp, sizeof(*req)); 50542e9a92fSRobert Love if (!req) { 50642e9a92fSRobert Love rjt_data.fp = NULL; 50742e9a92fSRobert Love rjt_data.reason = ELS_RJT_LOGIC; 50842e9a92fSRobert Love rjt_data.explan = ELS_EXPL_NONE; 50942e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); 51042e9a92fSRobert Love } else { 51142e9a92fSRobert Love len = sizeof(*rp); 51242e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 51342e9a92fSRobert Love if (fp) { 51442e9a92fSRobert Love rp = fc_frame_payload_get(fp, len); 51542e9a92fSRobert Love memset(rp, 0, len); 51642e9a92fSRobert Love rp->adisc_cmd = ELS_LS_ACC; 51742e9a92fSRobert Love rp->adisc_wwpn = htonll(lport->wwpn); 51842e9a92fSRobert Love rp->adisc_wwnn = htonll(lport->wwnn); 51942e9a92fSRobert Love hton24(rp->adisc_port_id, 52042e9a92fSRobert Love fc_host_port_id(lport->host)); 52142e9a92fSRobert Love sp = lport->tt.seq_start_next(sp); 52242e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; 52342e9a92fSRobert Love f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; 52442e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 52542e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 52642e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 52742e9a92fSRobert Love } 52842e9a92fSRobert Love } 52942e9a92fSRobert Love fc_frame_free(in_fp); 53042e9a92fSRobert Love } 53142e9a92fSRobert Love 53242e9a92fSRobert Love /** 53334f42a07SRobert Love * fc_lport_recv_logo_req() - Handle received fabric LOGO request 53442e9a92fSRobert Love * @lport: Fibre Channel local port recieving the LOGO 53542e9a92fSRobert Love * @sp: current sequence in the LOGO exchange 53642e9a92fSRobert Love * @fp: LOGO request frame 53742e9a92fSRobert Love * 53842e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 53942e9a92fSRobert Love * this function. 54042e9a92fSRobert Love */ 54142e9a92fSRobert Love static void fc_lport_recv_logo_req(struct fc_seq *sp, struct fc_frame *fp, 54242e9a92fSRobert Love struct fc_lport *lport) 54342e9a92fSRobert Love { 54442e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); 54542e9a92fSRobert Love fc_lport_enter_reset(lport); 54642e9a92fSRobert Love fc_frame_free(fp); 54742e9a92fSRobert Love } 54842e9a92fSRobert Love 54942e9a92fSRobert Love /** 55034f42a07SRobert Love * fc_fabric_login() - Start the lport state machine 55142e9a92fSRobert Love * @lport: The lport that should log into the fabric 55242e9a92fSRobert Love * 55342e9a92fSRobert Love * Locking Note: This function should not be called 55442e9a92fSRobert Love * with the lport lock held. 55542e9a92fSRobert Love */ 55642e9a92fSRobert Love int fc_fabric_login(struct fc_lport *lport) 55742e9a92fSRobert Love { 55842e9a92fSRobert Love int rc = -1; 55942e9a92fSRobert Love 56042e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 56142e9a92fSRobert Love if (lport->state == LPORT_ST_NONE) { 56242e9a92fSRobert Love fc_lport_enter_reset(lport); 56342e9a92fSRobert Love rc = 0; 56442e9a92fSRobert Love } 56542e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 56642e9a92fSRobert Love 56742e9a92fSRobert Love return rc; 56842e9a92fSRobert Love } 56942e9a92fSRobert Love EXPORT_SYMBOL(fc_fabric_login); 57042e9a92fSRobert Love 57142e9a92fSRobert Love /** 57234f42a07SRobert Love * fc_linkup() - Handler for transport linkup events 57342e9a92fSRobert Love * @lport: The lport whose link is up 57442e9a92fSRobert Love */ 57542e9a92fSRobert Love void fc_linkup(struct fc_lport *lport) 57642e9a92fSRobert Love { 57742e9a92fSRobert Love FC_DEBUG_LPORT("Link is up for port (%6x)\n", 57842e9a92fSRobert Love fc_host_port_id(lport->host)); 57942e9a92fSRobert Love 58042e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 581bc0e17f6SVasu Dev if (!lport->link_up) { 582bc0e17f6SVasu Dev lport->link_up = 1; 58342e9a92fSRobert Love 58442e9a92fSRobert Love if (lport->state == LPORT_ST_RESET) 58542e9a92fSRobert Love fc_lport_enter_flogi(lport); 58642e9a92fSRobert Love } 58742e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 58842e9a92fSRobert Love } 58942e9a92fSRobert Love EXPORT_SYMBOL(fc_linkup); 59042e9a92fSRobert Love 59142e9a92fSRobert Love /** 59234f42a07SRobert Love * fc_linkdown() - Handler for transport linkdown events 59342e9a92fSRobert Love * @lport: The lport whose link is down 59442e9a92fSRobert Love */ 59542e9a92fSRobert Love void fc_linkdown(struct fc_lport *lport) 59642e9a92fSRobert Love { 59742e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 59842e9a92fSRobert Love FC_DEBUG_LPORT("Link is down for port (%6x)\n", 59942e9a92fSRobert Love fc_host_port_id(lport->host)); 60042e9a92fSRobert Love 601bc0e17f6SVasu Dev if (lport->link_up) { 602bc0e17f6SVasu Dev lport->link_up = 0; 60342e9a92fSRobert Love fc_lport_enter_reset(lport); 60442e9a92fSRobert Love lport->tt.fcp_cleanup(lport); 60542e9a92fSRobert Love } 60642e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 60742e9a92fSRobert Love } 60842e9a92fSRobert Love EXPORT_SYMBOL(fc_linkdown); 60942e9a92fSRobert Love 61042e9a92fSRobert Love /** 61134f42a07SRobert Love * fc_fabric_logoff() - Logout of the fabric 61242e9a92fSRobert Love * @lport: fc_lport pointer to logoff the fabric 61342e9a92fSRobert Love * 61442e9a92fSRobert Love * Return value: 61542e9a92fSRobert Love * 0 for success, -1 for failure 61634f42a07SRobert Love */ 61742e9a92fSRobert Love int fc_fabric_logoff(struct fc_lport *lport) 61842e9a92fSRobert Love { 61942e9a92fSRobert Love lport->tt.disc_stop_final(lport); 62042e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 621a0fd2e49SAbhijeet Joglekar if (lport->dns_rp) 622a0fd2e49SAbhijeet Joglekar lport->tt.rport_logoff(lport->dns_rp); 623a0fd2e49SAbhijeet Joglekar mutex_unlock(&lport->lp_mutex); 624a0fd2e49SAbhijeet Joglekar lport->tt.rport_flush_queue(); 625a0fd2e49SAbhijeet Joglekar mutex_lock(&lport->lp_mutex); 62642e9a92fSRobert Love fc_lport_enter_logo(lport); 62742e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 628f7db2c15SSteve Ma cancel_delayed_work_sync(&lport->retry_work); 62942e9a92fSRobert Love return 0; 63042e9a92fSRobert Love } 63142e9a92fSRobert Love EXPORT_SYMBOL(fc_fabric_logoff); 63242e9a92fSRobert Love 63342e9a92fSRobert Love /** 63434f42a07SRobert Love * fc_lport_destroy() - unregister a fc_lport 63542e9a92fSRobert Love * @lport: fc_lport pointer to unregister 63642e9a92fSRobert Love * 63742e9a92fSRobert Love * Return value: 63842e9a92fSRobert Love * None 63942e9a92fSRobert Love * Note: 64042e9a92fSRobert Love * exit routine for fc_lport instance 64142e9a92fSRobert Love * clean-up all the allocated memory 64242e9a92fSRobert Love * and free up other system resources. 64342e9a92fSRobert Love * 64434f42a07SRobert Love */ 64542e9a92fSRobert Love int fc_lport_destroy(struct fc_lport *lport) 64642e9a92fSRobert Love { 64742e9a92fSRobert Love lport->tt.frame_send = fc_frame_drop; 64842e9a92fSRobert Love lport->tt.fcp_abort_io(lport); 6491f6ff364SAbhijeet Joglekar lport->tt.exch_mgr_reset(lport, 0, 0); 65042e9a92fSRobert Love return 0; 65142e9a92fSRobert Love } 65242e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_destroy); 65342e9a92fSRobert Love 65442e9a92fSRobert Love /** 65534f42a07SRobert Love * fc_set_mfs() - sets up the mfs for the corresponding fc_lport 65642e9a92fSRobert Love * @lport: fc_lport pointer to unregister 65742e9a92fSRobert Love * @mfs: the new mfs for fc_lport 65842e9a92fSRobert Love * 65942e9a92fSRobert Love * Set mfs for the given fc_lport to the new mfs. 66042e9a92fSRobert Love * 66142e9a92fSRobert Love * Return: 0 for success 66234f42a07SRobert Love */ 66342e9a92fSRobert Love int fc_set_mfs(struct fc_lport *lport, u32 mfs) 66442e9a92fSRobert Love { 66542e9a92fSRobert Love unsigned int old_mfs; 66642e9a92fSRobert Love int rc = -EINVAL; 66742e9a92fSRobert Love 66842e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 66942e9a92fSRobert Love 67042e9a92fSRobert Love old_mfs = lport->mfs; 67142e9a92fSRobert Love 67242e9a92fSRobert Love if (mfs >= FC_MIN_MAX_FRAME) { 67342e9a92fSRobert Love mfs &= ~3; 67442e9a92fSRobert Love if (mfs > FC_MAX_FRAME) 67542e9a92fSRobert Love mfs = FC_MAX_FRAME; 67642e9a92fSRobert Love mfs -= sizeof(struct fc_frame_header); 67742e9a92fSRobert Love lport->mfs = mfs; 67842e9a92fSRobert Love rc = 0; 67942e9a92fSRobert Love } 68042e9a92fSRobert Love 68142e9a92fSRobert Love if (!rc && mfs < old_mfs) 68242e9a92fSRobert Love fc_lport_enter_reset(lport); 68342e9a92fSRobert Love 68442e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 68542e9a92fSRobert Love 68642e9a92fSRobert Love return rc; 68742e9a92fSRobert Love } 68842e9a92fSRobert Love EXPORT_SYMBOL(fc_set_mfs); 68942e9a92fSRobert Love 69042e9a92fSRobert Love /** 69134f42a07SRobert Love * fc_lport_disc_callback() - Callback for discovery events 69242e9a92fSRobert Love * @lport: FC local port 69342e9a92fSRobert Love * @event: The discovery event 69442e9a92fSRobert Love */ 69542e9a92fSRobert Love void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event) 69642e9a92fSRobert Love { 69742e9a92fSRobert Love switch (event) { 69842e9a92fSRobert Love case DISC_EV_SUCCESS: 69942e9a92fSRobert Love FC_DEBUG_LPORT("Got a SUCCESS event for port (%6x)\n", 70042e9a92fSRobert Love fc_host_port_id(lport->host)); 70142e9a92fSRobert Love break; 70242e9a92fSRobert Love case DISC_EV_FAILED: 70342e9a92fSRobert Love FC_DEBUG_LPORT("Got a FAILED event for port (%6x)\n", 70442e9a92fSRobert Love fc_host_port_id(lport->host)); 70542e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 70642e9a92fSRobert Love fc_lport_enter_reset(lport); 70742e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 70842e9a92fSRobert Love break; 70942e9a92fSRobert Love case DISC_EV_NONE: 71042e9a92fSRobert Love WARN_ON(1); 71142e9a92fSRobert Love break; 71242e9a92fSRobert Love } 71342e9a92fSRobert Love } 71442e9a92fSRobert Love 71542e9a92fSRobert Love /** 71634f42a07SRobert Love * fc_rport_enter_ready() - Enter the ready state and start discovery 71742e9a92fSRobert Love * @lport: Fibre Channel local port that is ready 71842e9a92fSRobert Love * 71942e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 72042e9a92fSRobert Love * this routine. 72142e9a92fSRobert Love */ 72242e9a92fSRobert Love static void fc_lport_enter_ready(struct fc_lport *lport) 72342e9a92fSRobert Love { 72442e9a92fSRobert Love FC_DEBUG_LPORT("Port (%6x) entered Ready from state %s\n", 72542e9a92fSRobert Love fc_host_port_id(lport->host), fc_lport_state(lport)); 72642e9a92fSRobert Love 72742e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_READY); 72842e9a92fSRobert Love 72942e9a92fSRobert Love lport->tt.disc_start(fc_lport_disc_callback, lport); 73042e9a92fSRobert Love } 73142e9a92fSRobert Love 73242e9a92fSRobert Love /** 73334f42a07SRobert Love * fc_lport_recv_flogi_req() - Receive a FLOGI request 73442e9a92fSRobert Love * @sp_in: The sequence the FLOGI is on 73542e9a92fSRobert Love * @rx_fp: The frame the FLOGI is in 73642e9a92fSRobert Love * @lport: The lport that recieved the request 73742e9a92fSRobert Love * 73842e9a92fSRobert Love * A received FLOGI request indicates a point-to-point connection. 73942e9a92fSRobert Love * Accept it with the common service parameters indicating our N port. 74042e9a92fSRobert Love * Set up to do a PLOGI if we have the higher-number WWPN. 74142e9a92fSRobert Love * 74242e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 74342e9a92fSRobert Love * this function. 74442e9a92fSRobert Love */ 74542e9a92fSRobert Love static void fc_lport_recv_flogi_req(struct fc_seq *sp_in, 74642e9a92fSRobert Love struct fc_frame *rx_fp, 74742e9a92fSRobert Love struct fc_lport *lport) 74842e9a92fSRobert Love { 74942e9a92fSRobert Love struct fc_frame *fp; 75042e9a92fSRobert Love struct fc_frame_header *fh; 75142e9a92fSRobert Love struct fc_seq *sp; 75242e9a92fSRobert Love struct fc_exch *ep; 75342e9a92fSRobert Love struct fc_els_flogi *flp; 75442e9a92fSRobert Love struct fc_els_flogi *new_flp; 75542e9a92fSRobert Love u64 remote_wwpn; 75642e9a92fSRobert Love u32 remote_fid; 75742e9a92fSRobert Love u32 local_fid; 75842e9a92fSRobert Love u32 f_ctl; 75942e9a92fSRobert Love 76042e9a92fSRobert Love FC_DEBUG_LPORT("Received FLOGI request while in state %s\n", 76142e9a92fSRobert Love fc_lport_state(lport)); 76242e9a92fSRobert Love 76342e9a92fSRobert Love fh = fc_frame_header_get(rx_fp); 76442e9a92fSRobert Love remote_fid = ntoh24(fh->fh_s_id); 76542e9a92fSRobert Love flp = fc_frame_payload_get(rx_fp, sizeof(*flp)); 76642e9a92fSRobert Love if (!flp) 76742e9a92fSRobert Love goto out; 76842e9a92fSRobert Love remote_wwpn = get_unaligned_be64(&flp->fl_wwpn); 76942e9a92fSRobert Love if (remote_wwpn == lport->wwpn) { 77042e9a92fSRobert Love FC_DBG("FLOGI from port with same WWPN %llx " 7716e7490c7SFUJITA Tomonori "possible configuration error\n", 7726e7490c7SFUJITA Tomonori (unsigned long long)remote_wwpn); 77342e9a92fSRobert Love goto out; 77442e9a92fSRobert Love } 7756e7490c7SFUJITA Tomonori FC_DBG("FLOGI from port WWPN %llx\n", (unsigned long long)remote_wwpn); 77642e9a92fSRobert Love 77742e9a92fSRobert Love /* 77842e9a92fSRobert Love * XXX what is the right thing to do for FIDs? 77942e9a92fSRobert Love * The originator might expect our S_ID to be 0xfffffe. 78042e9a92fSRobert Love * But if so, both of us could end up with the same FID. 78142e9a92fSRobert Love */ 78242e9a92fSRobert Love local_fid = FC_LOCAL_PTP_FID_LO; 78342e9a92fSRobert Love if (remote_wwpn < lport->wwpn) { 78442e9a92fSRobert Love local_fid = FC_LOCAL_PTP_FID_HI; 78542e9a92fSRobert Love if (!remote_fid || remote_fid == local_fid) 78642e9a92fSRobert Love remote_fid = FC_LOCAL_PTP_FID_LO; 78742e9a92fSRobert Love } else if (!remote_fid) { 78842e9a92fSRobert Love remote_fid = FC_LOCAL_PTP_FID_HI; 78942e9a92fSRobert Love } 79042e9a92fSRobert Love 79142e9a92fSRobert Love fc_host_port_id(lport->host) = local_fid; 79242e9a92fSRobert Love 79342e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(*flp)); 79442e9a92fSRobert Love if (fp) { 79542e9a92fSRobert Love sp = lport->tt.seq_start_next(fr_seq(rx_fp)); 79642e9a92fSRobert Love new_flp = fc_frame_payload_get(fp, sizeof(*flp)); 79742e9a92fSRobert Love fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI); 79842e9a92fSRobert Love new_flp->fl_cmd = (u8) ELS_LS_ACC; 79942e9a92fSRobert Love 80042e9a92fSRobert Love /* 80142e9a92fSRobert Love * Send the response. If this fails, the originator should 80242e9a92fSRobert Love * repeat the sequence. 80342e9a92fSRobert Love */ 80442e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; 80542e9a92fSRobert Love ep = fc_seq_exch(sp); 80642e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 80742e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 80842e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 80942e9a92fSRobert Love 81042e9a92fSRobert Love } else { 81142e9a92fSRobert Love fc_lport_error(lport, fp); 81242e9a92fSRobert Love } 81342e9a92fSRobert Love fc_lport_ptp_setup(lport, remote_fid, remote_wwpn, 81442e9a92fSRobert Love get_unaligned_be64(&flp->fl_wwnn)); 81542e9a92fSRobert Love 81642e9a92fSRobert Love lport->tt.disc_start(fc_lport_disc_callback, lport); 81742e9a92fSRobert Love 81842e9a92fSRobert Love out: 81942e9a92fSRobert Love sp = fr_seq(rx_fp); 82042e9a92fSRobert Love fc_frame_free(rx_fp); 82142e9a92fSRobert Love } 82242e9a92fSRobert Love 82342e9a92fSRobert Love /** 82434f42a07SRobert Love * fc_lport_recv_req() - The generic lport request handler 82542e9a92fSRobert Love * @lport: The lport that received the request 82642e9a92fSRobert Love * @sp: The sequence the request is on 82742e9a92fSRobert Love * @fp: The frame the request is in 82842e9a92fSRobert Love * 82942e9a92fSRobert Love * This function will see if the lport handles the request or 83042e9a92fSRobert Love * if an rport should handle the request. 83142e9a92fSRobert Love * 83242e9a92fSRobert Love * Locking Note: This function should not be called with the lport 83342e9a92fSRobert Love * lock held becuase it will grab the lock. 83442e9a92fSRobert Love */ 83542e9a92fSRobert Love static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp, 83642e9a92fSRobert Love struct fc_frame *fp) 83742e9a92fSRobert Love { 83842e9a92fSRobert Love struct fc_frame_header *fh = fc_frame_header_get(fp); 83942e9a92fSRobert Love void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *); 84042e9a92fSRobert Love struct fc_rport *rport; 84142e9a92fSRobert Love u32 s_id; 84242e9a92fSRobert Love u32 d_id; 84342e9a92fSRobert Love struct fc_seq_els_data rjt_data; 84442e9a92fSRobert Love 84542e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 84642e9a92fSRobert Love 84742e9a92fSRobert Love /* 84842e9a92fSRobert Love * Handle special ELS cases like FLOGI, LOGO, and 84942e9a92fSRobert Love * RSCN here. These don't require a session. 85042e9a92fSRobert Love * Even if we had a session, it might not be ready. 85142e9a92fSRobert Love */ 85242e9a92fSRobert Love if (fh->fh_type == FC_TYPE_ELS && fh->fh_r_ctl == FC_RCTL_ELS_REQ) { 85342e9a92fSRobert Love /* 85442e9a92fSRobert Love * Check opcode. 85542e9a92fSRobert Love */ 85642e9a92fSRobert Love recv = NULL; 85742e9a92fSRobert Love switch (fc_frame_payload_op(fp)) { 85842e9a92fSRobert Love case ELS_FLOGI: 85942e9a92fSRobert Love recv = fc_lport_recv_flogi_req; 86042e9a92fSRobert Love break; 86142e9a92fSRobert Love case ELS_LOGO: 86242e9a92fSRobert Love fh = fc_frame_header_get(fp); 86342e9a92fSRobert Love if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) 86442e9a92fSRobert Love recv = fc_lport_recv_logo_req; 86542e9a92fSRobert Love break; 86642e9a92fSRobert Love case ELS_RSCN: 86742e9a92fSRobert Love recv = lport->tt.disc_recv_req; 86842e9a92fSRobert Love break; 86942e9a92fSRobert Love case ELS_ECHO: 87042e9a92fSRobert Love recv = fc_lport_recv_echo_req; 87142e9a92fSRobert Love break; 87242e9a92fSRobert Love case ELS_RLIR: 87342e9a92fSRobert Love recv = fc_lport_recv_rlir_req; 87442e9a92fSRobert Love break; 87542e9a92fSRobert Love case ELS_RNID: 87642e9a92fSRobert Love recv = fc_lport_recv_rnid_req; 87742e9a92fSRobert Love break; 87842e9a92fSRobert Love case ELS_ADISC: 87942e9a92fSRobert Love recv = fc_lport_recv_adisc_req; 88042e9a92fSRobert Love break; 88142e9a92fSRobert Love } 88242e9a92fSRobert Love 88342e9a92fSRobert Love if (recv) 88442e9a92fSRobert Love recv(sp, fp, lport); 88542e9a92fSRobert Love else { 88642e9a92fSRobert Love /* 88742e9a92fSRobert Love * Find session. 88842e9a92fSRobert Love * If this is a new incoming PLOGI, we won't find it. 88942e9a92fSRobert Love */ 89042e9a92fSRobert Love s_id = ntoh24(fh->fh_s_id); 89142e9a92fSRobert Love d_id = ntoh24(fh->fh_d_id); 89242e9a92fSRobert Love 89342e9a92fSRobert Love rport = lport->tt.rport_lookup(lport, s_id); 89442e9a92fSRobert Love if (rport) 89542e9a92fSRobert Love lport->tt.rport_recv_req(sp, fp, rport); 89642e9a92fSRobert Love else { 89742e9a92fSRobert Love rjt_data.fp = NULL; 89842e9a92fSRobert Love rjt_data.reason = ELS_RJT_UNAB; 89942e9a92fSRobert Love rjt_data.explan = ELS_EXPL_NONE; 90042e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, 90142e9a92fSRobert Love ELS_LS_RJT, 90242e9a92fSRobert Love &rjt_data); 90342e9a92fSRobert Love fc_frame_free(fp); 90442e9a92fSRobert Love } 90542e9a92fSRobert Love } 90642e9a92fSRobert Love } else { 90742e9a92fSRobert Love FC_DBG("dropping invalid frame (eof %x)\n", fr_eof(fp)); 90842e9a92fSRobert Love fc_frame_free(fp); 90942e9a92fSRobert Love } 91042e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 91142e9a92fSRobert Love 91242e9a92fSRobert Love /* 91342e9a92fSRobert Love * The common exch_done for all request may not be good 91442e9a92fSRobert Love * if any request requires longer hold on exhange. XXX 91542e9a92fSRobert Love */ 91642e9a92fSRobert Love lport->tt.exch_done(sp); 91742e9a92fSRobert Love } 91842e9a92fSRobert Love 91942e9a92fSRobert Love /** 92034f42a07SRobert Love * fc_lport_reset() - Reset an lport 92142e9a92fSRobert Love * @lport: The lport which should be reset 92242e9a92fSRobert Love * 92342e9a92fSRobert Love * Locking Note: This functions should not be called with the 92442e9a92fSRobert Love * lport lock held. 92542e9a92fSRobert Love */ 92642e9a92fSRobert Love int fc_lport_reset(struct fc_lport *lport) 92742e9a92fSRobert Love { 928f7db2c15SSteve Ma cancel_delayed_work_sync(&lport->retry_work); 92942e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 93042e9a92fSRobert Love fc_lport_enter_reset(lport); 93142e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 93242e9a92fSRobert Love return 0; 93342e9a92fSRobert Love } 93442e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_reset); 93542e9a92fSRobert Love 93642e9a92fSRobert Love /** 93734f42a07SRobert Love * fc_rport_enter_reset() - Reset the local port 93842e9a92fSRobert Love * @lport: Fibre Channel local port to be reset 93942e9a92fSRobert Love * 94042e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 94142e9a92fSRobert Love * this routine. 94242e9a92fSRobert Love */ 94342e9a92fSRobert Love static void fc_lport_enter_reset(struct fc_lport *lport) 94442e9a92fSRobert Love { 94542e9a92fSRobert Love FC_DEBUG_LPORT("Port (%6x) entered RESET state from %s state\n", 94642e9a92fSRobert Love fc_host_port_id(lport->host), fc_lport_state(lport)); 94742e9a92fSRobert Love 94842e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_RESET); 94942e9a92fSRobert Love 95042e9a92fSRobert Love if (lport->dns_rp) 95142e9a92fSRobert Love lport->tt.rport_logoff(lport->dns_rp); 95242e9a92fSRobert Love 95342e9a92fSRobert Love if (lport->ptp_rp) { 95442e9a92fSRobert Love lport->tt.rport_logoff(lport->ptp_rp); 95542e9a92fSRobert Love lport->ptp_rp = NULL; 95642e9a92fSRobert Love } 95742e9a92fSRobert Love 95842e9a92fSRobert Love lport->tt.disc_stop(lport); 95942e9a92fSRobert Love 9601f6ff364SAbhijeet Joglekar lport->tt.exch_mgr_reset(lport, 0, 0); 96142e9a92fSRobert Love fc_host_fabric_name(lport->host) = 0; 96242e9a92fSRobert Love fc_host_port_id(lport->host) = 0; 96342e9a92fSRobert Love 964bc0e17f6SVasu Dev if (lport->link_up) 96542e9a92fSRobert Love fc_lport_enter_flogi(lport); 96642e9a92fSRobert Love } 96742e9a92fSRobert Love 96842e9a92fSRobert Love /** 96934f42a07SRobert Love * fc_lport_error() - Handler for any errors 97042e9a92fSRobert Love * @lport: The fc_lport object 97142e9a92fSRobert Love * @fp: The frame pointer 97242e9a92fSRobert Love * 97342e9a92fSRobert Love * If the error was caused by a resource allocation failure 97442e9a92fSRobert Love * then wait for half a second and retry, otherwise retry 97542e9a92fSRobert Love * after the e_d_tov time. 97642e9a92fSRobert Love */ 97742e9a92fSRobert Love static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp) 97842e9a92fSRobert Love { 97942e9a92fSRobert Love unsigned long delay = 0; 98042e9a92fSRobert Love FC_DEBUG_LPORT("Error %ld in state %s, retries %d\n", 98142e9a92fSRobert Love PTR_ERR(fp), fc_lport_state(lport), 98242e9a92fSRobert Love lport->retry_count); 98342e9a92fSRobert Love 98442e9a92fSRobert Love if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) { 98542e9a92fSRobert Love /* 98642e9a92fSRobert Love * Memory allocation failure, or the exchange timed out. 98742e9a92fSRobert Love * Retry after delay 98842e9a92fSRobert Love */ 98942e9a92fSRobert Love if (lport->retry_count < lport->max_retry_count) { 99042e9a92fSRobert Love lport->retry_count++; 99142e9a92fSRobert Love if (!fp) 99242e9a92fSRobert Love delay = msecs_to_jiffies(500); 99342e9a92fSRobert Love else 99442e9a92fSRobert Love delay = msecs_to_jiffies(lport->e_d_tov); 99542e9a92fSRobert Love 99642e9a92fSRobert Love schedule_delayed_work(&lport->retry_work, delay); 99742e9a92fSRobert Love } else { 99842e9a92fSRobert Love switch (lport->state) { 99942e9a92fSRobert Love case LPORT_ST_NONE: 100042e9a92fSRobert Love case LPORT_ST_READY: 100142e9a92fSRobert Love case LPORT_ST_RESET: 100242e9a92fSRobert Love case LPORT_ST_RPN_ID: 100342e9a92fSRobert Love case LPORT_ST_RFT_ID: 100442e9a92fSRobert Love case LPORT_ST_SCR: 100542e9a92fSRobert Love case LPORT_ST_DNS: 100642e9a92fSRobert Love case LPORT_ST_FLOGI: 100742e9a92fSRobert Love case LPORT_ST_LOGO: 100842e9a92fSRobert Love fc_lport_enter_reset(lport); 100942e9a92fSRobert Love break; 101042e9a92fSRobert Love } 101142e9a92fSRobert Love } 101242e9a92fSRobert Love } 101342e9a92fSRobert Love } 101442e9a92fSRobert Love 101542e9a92fSRobert Love /** 101634f42a07SRobert Love * fc_lport_rft_id_resp() - Handle response to Register Fibre 101742e9a92fSRobert Love * Channel Types by ID (RPN_ID) request 101842e9a92fSRobert Love * @sp: current sequence in RPN_ID exchange 101942e9a92fSRobert Love * @fp: response frame 102042e9a92fSRobert Love * @lp_arg: Fibre Channel host port instance 102142e9a92fSRobert Love * 102242e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 102342e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 102442e9a92fSRobert Love * and then unlock the lport. 102542e9a92fSRobert Love */ 102642e9a92fSRobert Love static void fc_lport_rft_id_resp(struct fc_seq *sp, struct fc_frame *fp, 102742e9a92fSRobert Love void *lp_arg) 102842e9a92fSRobert Love { 102942e9a92fSRobert Love struct fc_lport *lport = lp_arg; 103042e9a92fSRobert Love struct fc_frame_header *fh; 103142e9a92fSRobert Love struct fc_ct_hdr *ct; 103242e9a92fSRobert Love 103342e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 103442e9a92fSRobert Love return; 103542e9a92fSRobert Love 103642e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 103742e9a92fSRobert Love 103842e9a92fSRobert Love FC_DEBUG_LPORT("Received a RFT_ID response\n"); 103942e9a92fSRobert Love 104042e9a92fSRobert Love if (lport->state != LPORT_ST_RFT_ID) { 104142e9a92fSRobert Love FC_DBG("Received a RFT_ID response, but in state %s\n", 104242e9a92fSRobert Love fc_lport_state(lport)); 104376f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 104476f6804eSAbhijeet Joglekar goto err; 104542e9a92fSRobert Love goto out; 104642e9a92fSRobert Love } 104742e9a92fSRobert Love 104876f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 104976f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 105076f6804eSAbhijeet Joglekar goto err; 105176f6804eSAbhijeet Joglekar } 105276f6804eSAbhijeet Joglekar 105342e9a92fSRobert Love fh = fc_frame_header_get(fp); 105442e9a92fSRobert Love ct = fc_frame_payload_get(fp, sizeof(*ct)); 105542e9a92fSRobert Love 105642e9a92fSRobert Love if (fh && ct && fh->fh_type == FC_TYPE_CT && 105742e9a92fSRobert Love ct->ct_fs_type == FC_FST_DIR && 105842e9a92fSRobert Love ct->ct_fs_subtype == FC_NS_SUBTYPE && 105942e9a92fSRobert Love ntohs(ct->ct_cmd) == FC_FS_ACC) 106042e9a92fSRobert Love fc_lport_enter_scr(lport); 106142e9a92fSRobert Love else 106242e9a92fSRobert Love fc_lport_error(lport, fp); 106342e9a92fSRobert Love out: 106442e9a92fSRobert Love fc_frame_free(fp); 106542e9a92fSRobert Love err: 106642e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 106742e9a92fSRobert Love } 106842e9a92fSRobert Love 106942e9a92fSRobert Love /** 107034f42a07SRobert Love * fc_lport_rpn_id_resp() - Handle response to Register Port 107142e9a92fSRobert Love * Name by ID (RPN_ID) request 107242e9a92fSRobert Love * @sp: current sequence in RPN_ID exchange 107342e9a92fSRobert Love * @fp: response frame 107442e9a92fSRobert Love * @lp_arg: Fibre Channel host port instance 107542e9a92fSRobert Love * 107642e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 107742e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 107842e9a92fSRobert Love * and then unlock the lport. 107942e9a92fSRobert Love */ 108042e9a92fSRobert Love static void fc_lport_rpn_id_resp(struct fc_seq *sp, struct fc_frame *fp, 108142e9a92fSRobert Love void *lp_arg) 108242e9a92fSRobert Love { 108342e9a92fSRobert Love struct fc_lport *lport = lp_arg; 108442e9a92fSRobert Love struct fc_frame_header *fh; 108542e9a92fSRobert Love struct fc_ct_hdr *ct; 108642e9a92fSRobert Love 108742e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 108842e9a92fSRobert Love return; 108942e9a92fSRobert Love 109042e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 109142e9a92fSRobert Love 109242e9a92fSRobert Love FC_DEBUG_LPORT("Received a RPN_ID response\n"); 109342e9a92fSRobert Love 109442e9a92fSRobert Love if (lport->state != LPORT_ST_RPN_ID) { 109542e9a92fSRobert Love FC_DBG("Received a RPN_ID response, but in state %s\n", 109642e9a92fSRobert Love fc_lport_state(lport)); 109776f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 109876f6804eSAbhijeet Joglekar goto err; 109942e9a92fSRobert Love goto out; 110042e9a92fSRobert Love } 110142e9a92fSRobert Love 110276f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 110376f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 110476f6804eSAbhijeet Joglekar goto err; 110576f6804eSAbhijeet Joglekar } 110676f6804eSAbhijeet Joglekar 110742e9a92fSRobert Love fh = fc_frame_header_get(fp); 110842e9a92fSRobert Love ct = fc_frame_payload_get(fp, sizeof(*ct)); 110942e9a92fSRobert Love if (fh && ct && fh->fh_type == FC_TYPE_CT && 111042e9a92fSRobert Love ct->ct_fs_type == FC_FST_DIR && 111142e9a92fSRobert Love ct->ct_fs_subtype == FC_NS_SUBTYPE && 111242e9a92fSRobert Love ntohs(ct->ct_cmd) == FC_FS_ACC) 111342e9a92fSRobert Love fc_lport_enter_rft_id(lport); 111442e9a92fSRobert Love else 111542e9a92fSRobert Love fc_lport_error(lport, fp); 111642e9a92fSRobert Love 111742e9a92fSRobert Love out: 111842e9a92fSRobert Love fc_frame_free(fp); 111942e9a92fSRobert Love err: 112042e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 112142e9a92fSRobert Love } 112242e9a92fSRobert Love 112342e9a92fSRobert Love /** 112434f42a07SRobert Love * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request 112542e9a92fSRobert Love * @sp: current sequence in SCR exchange 112642e9a92fSRobert Love * @fp: response frame 112742e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the registration request 112842e9a92fSRobert Love * 112942e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 113042e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 113142e9a92fSRobert Love * and then unlock the lport. 113242e9a92fSRobert Love */ 113342e9a92fSRobert Love static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp, 113442e9a92fSRobert Love void *lp_arg) 113542e9a92fSRobert Love { 113642e9a92fSRobert Love struct fc_lport *lport = lp_arg; 113742e9a92fSRobert Love u8 op; 113842e9a92fSRobert Love 113942e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 114042e9a92fSRobert Love return; 114142e9a92fSRobert Love 114242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 114342e9a92fSRobert Love 114442e9a92fSRobert Love FC_DEBUG_LPORT("Received a SCR response\n"); 114542e9a92fSRobert Love 114642e9a92fSRobert Love if (lport->state != LPORT_ST_SCR) { 114742e9a92fSRobert Love FC_DBG("Received a SCR response, but in state %s\n", 114842e9a92fSRobert Love fc_lport_state(lport)); 114976f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 115076f6804eSAbhijeet Joglekar goto err; 115142e9a92fSRobert Love goto out; 115242e9a92fSRobert Love } 115342e9a92fSRobert Love 115476f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 115576f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 115676f6804eSAbhijeet Joglekar goto err; 115776f6804eSAbhijeet Joglekar } 115876f6804eSAbhijeet Joglekar 115942e9a92fSRobert Love op = fc_frame_payload_op(fp); 116042e9a92fSRobert Love if (op == ELS_LS_ACC) 116142e9a92fSRobert Love fc_lport_enter_ready(lport); 116242e9a92fSRobert Love else 116342e9a92fSRobert Love fc_lport_error(lport, fp); 116442e9a92fSRobert Love 116542e9a92fSRobert Love out: 116642e9a92fSRobert Love fc_frame_free(fp); 116742e9a92fSRobert Love err: 116842e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 116942e9a92fSRobert Love } 117042e9a92fSRobert Love 117142e9a92fSRobert Love /** 117234f42a07SRobert Love * fc_lport_enter_scr() - Send a State Change Register (SCR) request 117342e9a92fSRobert Love * @lport: Fibre Channel local port to register for state changes 117442e9a92fSRobert Love * 117542e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 117642e9a92fSRobert Love * this routine. 117742e9a92fSRobert Love */ 117842e9a92fSRobert Love static void fc_lport_enter_scr(struct fc_lport *lport) 117942e9a92fSRobert Love { 118042e9a92fSRobert Love struct fc_frame *fp; 118142e9a92fSRobert Love 118242e9a92fSRobert Love FC_DEBUG_LPORT("Port (%6x) entered SCR state from %s state\n", 118342e9a92fSRobert Love fc_host_port_id(lport->host), fc_lport_state(lport)); 118442e9a92fSRobert Love 118542e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_SCR); 118642e9a92fSRobert Love 118742e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr)); 118842e9a92fSRobert Love if (!fp) { 118942e9a92fSRobert Love fc_lport_error(lport, fp); 119042e9a92fSRobert Love return; 119142e9a92fSRobert Love } 119242e9a92fSRobert Love 119342e9a92fSRobert Love if (!lport->tt.elsct_send(lport, NULL, fp, ELS_SCR, 119442e9a92fSRobert Love fc_lport_scr_resp, lport, lport->e_d_tov)) 119542e9a92fSRobert Love fc_lport_error(lport, fp); 119642e9a92fSRobert Love } 119742e9a92fSRobert Love 119842e9a92fSRobert Love /** 119934f42a07SRobert Love * fc_lport_enter_rft_id() - Register FC4-types with the name server 120042e9a92fSRobert Love * @lport: Fibre Channel local port to register 120142e9a92fSRobert Love * 120242e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 120342e9a92fSRobert Love * this routine. 120442e9a92fSRobert Love */ 120542e9a92fSRobert Love static void fc_lport_enter_rft_id(struct fc_lport *lport) 120642e9a92fSRobert Love { 120742e9a92fSRobert Love struct fc_frame *fp; 120842e9a92fSRobert Love struct fc_ns_fts *lps; 120942e9a92fSRobert Love int i; 121042e9a92fSRobert Love 121142e9a92fSRobert Love FC_DEBUG_LPORT("Port (%6x) entered RFT_ID state from %s state\n", 121242e9a92fSRobert Love fc_host_port_id(lport->host), fc_lport_state(lport)); 121342e9a92fSRobert Love 121442e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_RFT_ID); 121542e9a92fSRobert Love 121642e9a92fSRobert Love lps = &lport->fcts; 121742e9a92fSRobert Love i = sizeof(lps->ff_type_map) / sizeof(lps->ff_type_map[0]); 121842e9a92fSRobert Love while (--i >= 0) 121942e9a92fSRobert Love if (ntohl(lps->ff_type_map[i]) != 0) 122042e9a92fSRobert Love break; 122142e9a92fSRobert Love if (i < 0) { 122242e9a92fSRobert Love /* nothing to register, move on to SCR */ 122342e9a92fSRobert Love fc_lport_enter_scr(lport); 122442e9a92fSRobert Love return; 122542e9a92fSRobert Love } 122642e9a92fSRobert Love 122742e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + 122842e9a92fSRobert Love sizeof(struct fc_ns_rft)); 122942e9a92fSRobert Love if (!fp) { 123042e9a92fSRobert Love fc_lport_error(lport, fp); 123142e9a92fSRobert Love return; 123242e9a92fSRobert Love } 123342e9a92fSRobert Love 123442e9a92fSRobert Love if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RFT_ID, 123542e9a92fSRobert Love fc_lport_rft_id_resp, 123642e9a92fSRobert Love lport, lport->e_d_tov)) 123742e9a92fSRobert Love fc_lport_error(lport, fp); 123842e9a92fSRobert Love } 123942e9a92fSRobert Love 124042e9a92fSRobert Love /** 124134f42a07SRobert Love * fc_rport_enter_rft_id() - Register port name with the name server 124242e9a92fSRobert Love * @lport: Fibre Channel local port to register 124342e9a92fSRobert Love * 124442e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 124542e9a92fSRobert Love * this routine. 124642e9a92fSRobert Love */ 124742e9a92fSRobert Love static void fc_lport_enter_rpn_id(struct fc_lport *lport) 124842e9a92fSRobert Love { 124942e9a92fSRobert Love struct fc_frame *fp; 125042e9a92fSRobert Love 125142e9a92fSRobert Love FC_DEBUG_LPORT("Port (%6x) entered RPN_ID state from %s state\n", 125242e9a92fSRobert Love fc_host_port_id(lport->host), fc_lport_state(lport)); 125342e9a92fSRobert Love 125442e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_RPN_ID); 125542e9a92fSRobert Love 125642e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + 125742e9a92fSRobert Love sizeof(struct fc_ns_rn_id)); 125842e9a92fSRobert Love if (!fp) { 125942e9a92fSRobert Love fc_lport_error(lport, fp); 126042e9a92fSRobert Love return; 126142e9a92fSRobert Love } 126242e9a92fSRobert Love 126342e9a92fSRobert Love if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RPN_ID, 126442e9a92fSRobert Love fc_lport_rpn_id_resp, 126542e9a92fSRobert Love lport, lport->e_d_tov)) 126642e9a92fSRobert Love fc_lport_error(lport, fp); 126742e9a92fSRobert Love } 126842e9a92fSRobert Love 126942e9a92fSRobert Love static struct fc_rport_operations fc_lport_rport_ops = { 127042e9a92fSRobert Love .event_callback = fc_lport_rport_callback, 127142e9a92fSRobert Love }; 127242e9a92fSRobert Love 127342e9a92fSRobert Love /** 127434f42a07SRobert Love * fc_rport_enter_dns() - Create a rport to the name server 127542e9a92fSRobert Love * @lport: Fibre Channel local port requesting a rport for the name server 127642e9a92fSRobert Love * 127742e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 127842e9a92fSRobert Love * this routine. 127942e9a92fSRobert Love */ 128042e9a92fSRobert Love static void fc_lport_enter_dns(struct fc_lport *lport) 128142e9a92fSRobert Love { 128242e9a92fSRobert Love struct fc_rport *rport; 128342e9a92fSRobert Love struct fc_rport_libfc_priv *rdata; 128442e9a92fSRobert Love struct fc_disc_port dp; 128542e9a92fSRobert Love 128642e9a92fSRobert Love dp.ids.port_id = FC_FID_DIR_SERV; 128742e9a92fSRobert Love dp.ids.port_name = -1; 128842e9a92fSRobert Love dp.ids.node_name = -1; 128942e9a92fSRobert Love dp.ids.roles = FC_RPORT_ROLE_UNKNOWN; 129042e9a92fSRobert Love dp.lp = lport; 129142e9a92fSRobert Love 129242e9a92fSRobert Love FC_DEBUG_LPORT("Port (%6x) entered DNS state from %s state\n", 129342e9a92fSRobert Love fc_host_port_id(lport->host), fc_lport_state(lport)); 129442e9a92fSRobert Love 129542e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_DNS); 129642e9a92fSRobert Love 12975101ff99SRobert Love rport = lport->tt.rport_create(&dp); 129842e9a92fSRobert Love if (!rport) 129942e9a92fSRobert Love goto err; 130042e9a92fSRobert Love 130142e9a92fSRobert Love rdata = rport->dd_data; 130242e9a92fSRobert Love rdata->ops = &fc_lport_rport_ops; 130342e9a92fSRobert Love lport->tt.rport_login(rport); 130442e9a92fSRobert Love return; 130542e9a92fSRobert Love 130642e9a92fSRobert Love err: 130742e9a92fSRobert Love fc_lport_error(lport, NULL); 130842e9a92fSRobert Love } 130942e9a92fSRobert Love 131042e9a92fSRobert Love /** 131134f42a07SRobert Love * fc_lport_timeout() - Handler for the retry_work timer. 131242e9a92fSRobert Love * @work: The work struct of the fc_lport 131342e9a92fSRobert Love */ 131442e9a92fSRobert Love static void fc_lport_timeout(struct work_struct *work) 131542e9a92fSRobert Love { 131642e9a92fSRobert Love struct fc_lport *lport = 131742e9a92fSRobert Love container_of(work, struct fc_lport, 131842e9a92fSRobert Love retry_work.work); 131942e9a92fSRobert Love 132042e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 132142e9a92fSRobert Love 132242e9a92fSRobert Love switch (lport->state) { 132342e9a92fSRobert Love case LPORT_ST_NONE: 132442e9a92fSRobert Love case LPORT_ST_READY: 132542e9a92fSRobert Love case LPORT_ST_RESET: 132642e9a92fSRobert Love WARN_ON(1); 132742e9a92fSRobert Love break; 132842e9a92fSRobert Love case LPORT_ST_FLOGI: 132942e9a92fSRobert Love fc_lport_enter_flogi(lport); 133042e9a92fSRobert Love break; 133142e9a92fSRobert Love case LPORT_ST_DNS: 133242e9a92fSRobert Love fc_lport_enter_dns(lport); 133342e9a92fSRobert Love break; 133442e9a92fSRobert Love case LPORT_ST_RPN_ID: 133542e9a92fSRobert Love fc_lport_enter_rpn_id(lport); 133642e9a92fSRobert Love break; 133742e9a92fSRobert Love case LPORT_ST_RFT_ID: 133842e9a92fSRobert Love fc_lport_enter_rft_id(lport); 133942e9a92fSRobert Love break; 134042e9a92fSRobert Love case LPORT_ST_SCR: 134142e9a92fSRobert Love fc_lport_enter_scr(lport); 134242e9a92fSRobert Love break; 134342e9a92fSRobert Love case LPORT_ST_LOGO: 134442e9a92fSRobert Love fc_lport_enter_logo(lport); 134542e9a92fSRobert Love break; 134642e9a92fSRobert Love } 134742e9a92fSRobert Love 134842e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 134942e9a92fSRobert Love } 135042e9a92fSRobert Love 135142e9a92fSRobert Love /** 135234f42a07SRobert Love * fc_lport_logo_resp() - Handle response to LOGO request 135342e9a92fSRobert Love * @sp: current sequence in LOGO exchange 135442e9a92fSRobert Love * @fp: response frame 135542e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the LOGO request 135642e9a92fSRobert Love * 135742e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 135842e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 135942e9a92fSRobert Love * and then unlock the lport. 136042e9a92fSRobert Love */ 136142e9a92fSRobert Love static void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp, 136242e9a92fSRobert Love void *lp_arg) 136342e9a92fSRobert Love { 136442e9a92fSRobert Love struct fc_lport *lport = lp_arg; 136542e9a92fSRobert Love u8 op; 136642e9a92fSRobert Love 136742e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 136842e9a92fSRobert Love return; 136942e9a92fSRobert Love 137042e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 137142e9a92fSRobert Love 137242e9a92fSRobert Love FC_DEBUG_LPORT("Received a LOGO response\n"); 137342e9a92fSRobert Love 137442e9a92fSRobert Love if (lport->state != LPORT_ST_LOGO) { 137542e9a92fSRobert Love FC_DBG("Received a LOGO response, but in state %s\n", 137642e9a92fSRobert Love fc_lport_state(lport)); 137776f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 137876f6804eSAbhijeet Joglekar goto err; 137942e9a92fSRobert Love goto out; 138042e9a92fSRobert Love } 138142e9a92fSRobert Love 138276f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 138376f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 138476f6804eSAbhijeet Joglekar goto err; 138576f6804eSAbhijeet Joglekar } 138676f6804eSAbhijeet Joglekar 138742e9a92fSRobert Love op = fc_frame_payload_op(fp); 138842e9a92fSRobert Love if (op == ELS_LS_ACC) 138942e9a92fSRobert Love fc_lport_enter_reset(lport); 139042e9a92fSRobert Love else 139142e9a92fSRobert Love fc_lport_error(lport, fp); 139242e9a92fSRobert Love 139342e9a92fSRobert Love out: 139442e9a92fSRobert Love fc_frame_free(fp); 139542e9a92fSRobert Love err: 139642e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 139742e9a92fSRobert Love } 139842e9a92fSRobert Love 139942e9a92fSRobert Love /** 140034f42a07SRobert Love * fc_rport_enter_logo() - Logout of the fabric 140142e9a92fSRobert Love * @lport: Fibre Channel local port to be logged out 140242e9a92fSRobert Love * 140342e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 140442e9a92fSRobert Love * this routine. 140542e9a92fSRobert Love */ 140642e9a92fSRobert Love static void fc_lport_enter_logo(struct fc_lport *lport) 140742e9a92fSRobert Love { 140842e9a92fSRobert Love struct fc_frame *fp; 140942e9a92fSRobert Love struct fc_els_logo *logo; 141042e9a92fSRobert Love 141142e9a92fSRobert Love FC_DEBUG_LPORT("Port (%6x) entered LOGO state from %s state\n", 141242e9a92fSRobert Love fc_host_port_id(lport->host), fc_lport_state(lport)); 141342e9a92fSRobert Love 141442e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_LOGO); 141542e9a92fSRobert Love 141642e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(*logo)); 141742e9a92fSRobert Love if (!fp) { 141842e9a92fSRobert Love fc_lport_error(lport, fp); 141942e9a92fSRobert Love return; 142042e9a92fSRobert Love } 142142e9a92fSRobert Love 142242e9a92fSRobert Love if (!lport->tt.elsct_send(lport, NULL, fp, ELS_LOGO, fc_lport_logo_resp, 142342e9a92fSRobert Love lport, lport->e_d_tov)) 142442e9a92fSRobert Love fc_lport_error(lport, fp); 142542e9a92fSRobert Love } 142642e9a92fSRobert Love 142742e9a92fSRobert Love /** 142834f42a07SRobert Love * fc_lport_flogi_resp() - Handle response to FLOGI request 142942e9a92fSRobert Love * @sp: current sequence in FLOGI exchange 143042e9a92fSRobert Love * @fp: response frame 143142e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the FLOGI request 143242e9a92fSRobert Love * 143342e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 143442e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 143542e9a92fSRobert Love * and then unlock the lport. 143642e9a92fSRobert Love */ 143742e9a92fSRobert Love static void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, 143842e9a92fSRobert Love void *lp_arg) 143942e9a92fSRobert Love { 144042e9a92fSRobert Love struct fc_lport *lport = lp_arg; 144142e9a92fSRobert Love struct fc_frame_header *fh; 144242e9a92fSRobert Love struct fc_els_flogi *flp; 144342e9a92fSRobert Love u32 did; 144442e9a92fSRobert Love u16 csp_flags; 144542e9a92fSRobert Love unsigned int r_a_tov; 144642e9a92fSRobert Love unsigned int e_d_tov; 144742e9a92fSRobert Love u16 mfs; 144842e9a92fSRobert Love 144942e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 145042e9a92fSRobert Love return; 145142e9a92fSRobert Love 145242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 145342e9a92fSRobert Love 145442e9a92fSRobert Love FC_DEBUG_LPORT("Received a FLOGI response\n"); 145542e9a92fSRobert Love 145642e9a92fSRobert Love if (lport->state != LPORT_ST_FLOGI) { 145742e9a92fSRobert Love FC_DBG("Received a FLOGI response, but in state %s\n", 145842e9a92fSRobert Love fc_lport_state(lport)); 145976f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 146076f6804eSAbhijeet Joglekar goto err; 146142e9a92fSRobert Love goto out; 146242e9a92fSRobert Love } 146342e9a92fSRobert Love 146476f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 146576f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 146676f6804eSAbhijeet Joglekar goto err; 146776f6804eSAbhijeet Joglekar } 146876f6804eSAbhijeet Joglekar 146942e9a92fSRobert Love fh = fc_frame_header_get(fp); 147042e9a92fSRobert Love did = ntoh24(fh->fh_d_id); 147142e9a92fSRobert Love if (fc_frame_payload_op(fp) == ELS_LS_ACC && did != 0) { 147242e9a92fSRobert Love 147342e9a92fSRobert Love FC_DEBUG_LPORT("Assigned fid %x\n", did); 147442e9a92fSRobert Love fc_host_port_id(lport->host) = did; 147542e9a92fSRobert Love 147642e9a92fSRobert Love flp = fc_frame_payload_get(fp, sizeof(*flp)); 147742e9a92fSRobert Love if (flp) { 147842e9a92fSRobert Love mfs = ntohs(flp->fl_csp.sp_bb_data) & 147942e9a92fSRobert Love FC_SP_BB_DATA_MASK; 148042e9a92fSRobert Love if (mfs >= FC_SP_MIN_MAX_PAYLOAD && 148142e9a92fSRobert Love mfs < lport->mfs) 148242e9a92fSRobert Love lport->mfs = mfs; 148342e9a92fSRobert Love csp_flags = ntohs(flp->fl_csp.sp_features); 148442e9a92fSRobert Love r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov); 148542e9a92fSRobert Love e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov); 148642e9a92fSRobert Love if (csp_flags & FC_SP_FT_EDTR) 148742e9a92fSRobert Love e_d_tov /= 1000000; 148842e9a92fSRobert Love if ((csp_flags & FC_SP_FT_FPORT) == 0) { 148942e9a92fSRobert Love if (e_d_tov > lport->e_d_tov) 149042e9a92fSRobert Love lport->e_d_tov = e_d_tov; 149142e9a92fSRobert Love lport->r_a_tov = 2 * e_d_tov; 149242e9a92fSRobert Love FC_DBG("Point-to-Point mode\n"); 149342e9a92fSRobert Love fc_lport_ptp_setup(lport, ntoh24(fh->fh_s_id), 149442e9a92fSRobert Love get_unaligned_be64( 149542e9a92fSRobert Love &flp->fl_wwpn), 149642e9a92fSRobert Love get_unaligned_be64( 149742e9a92fSRobert Love &flp->fl_wwnn)); 149842e9a92fSRobert Love } else { 149942e9a92fSRobert Love lport->e_d_tov = e_d_tov; 150042e9a92fSRobert Love lport->r_a_tov = r_a_tov; 150142e9a92fSRobert Love fc_host_fabric_name(lport->host) = 150242e9a92fSRobert Love get_unaligned_be64(&flp->fl_wwnn); 150342e9a92fSRobert Love fc_lport_enter_dns(lport); 150442e9a92fSRobert Love } 150542e9a92fSRobert Love } 150642e9a92fSRobert Love 150742e9a92fSRobert Love if (flp) { 150842e9a92fSRobert Love csp_flags = ntohs(flp->fl_csp.sp_features); 150942e9a92fSRobert Love if ((csp_flags & FC_SP_FT_FPORT) == 0) { 151042e9a92fSRobert Love lport->tt.disc_start(fc_lport_disc_callback, 151142e9a92fSRobert Love lport); 151242e9a92fSRobert Love } 151342e9a92fSRobert Love } 151442e9a92fSRobert Love } else { 151542e9a92fSRobert Love FC_DBG("bad FLOGI response\n"); 151642e9a92fSRobert Love } 151742e9a92fSRobert Love 151842e9a92fSRobert Love out: 151942e9a92fSRobert Love fc_frame_free(fp); 152042e9a92fSRobert Love err: 152142e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 152242e9a92fSRobert Love } 152342e9a92fSRobert Love 152442e9a92fSRobert Love /** 152534f42a07SRobert Love * fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager 152642e9a92fSRobert Love * @lport: Fibre Channel local port to be logged in to the fabric 152742e9a92fSRobert Love * 152842e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 152942e9a92fSRobert Love * this routine. 153042e9a92fSRobert Love */ 153142e9a92fSRobert Love void fc_lport_enter_flogi(struct fc_lport *lport) 153242e9a92fSRobert Love { 153342e9a92fSRobert Love struct fc_frame *fp; 153442e9a92fSRobert Love 153542e9a92fSRobert Love FC_DEBUG_LPORT("Processing FLOGI state\n"); 153642e9a92fSRobert Love 153742e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_FLOGI); 153842e9a92fSRobert Love 153942e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 154042e9a92fSRobert Love if (!fp) 154142e9a92fSRobert Love return fc_lport_error(lport, fp); 154242e9a92fSRobert Love 154342e9a92fSRobert Love if (!lport->tt.elsct_send(lport, NULL, fp, ELS_FLOGI, 154442e9a92fSRobert Love fc_lport_flogi_resp, lport, lport->e_d_tov)) 154542e9a92fSRobert Love fc_lport_error(lport, fp); 154642e9a92fSRobert Love } 154742e9a92fSRobert Love 154842e9a92fSRobert Love /* Configure a fc_lport */ 154942e9a92fSRobert Love int fc_lport_config(struct fc_lport *lport) 155042e9a92fSRobert Love { 155142e9a92fSRobert Love INIT_DELAYED_WORK(&lport->retry_work, fc_lport_timeout); 155242e9a92fSRobert Love mutex_init(&lport->lp_mutex); 155342e9a92fSRobert Love 155442e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_NONE); 155542e9a92fSRobert Love 155642e9a92fSRobert Love fc_lport_add_fc4_type(lport, FC_TYPE_FCP); 155742e9a92fSRobert Love fc_lport_add_fc4_type(lport, FC_TYPE_CT); 155842e9a92fSRobert Love 155942e9a92fSRobert Love return 0; 156042e9a92fSRobert Love } 156142e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_config); 156242e9a92fSRobert Love 156342e9a92fSRobert Love int fc_lport_init(struct fc_lport *lport) 156442e9a92fSRobert Love { 156542e9a92fSRobert Love if (!lport->tt.lport_recv) 156642e9a92fSRobert Love lport->tt.lport_recv = fc_lport_recv_req; 156742e9a92fSRobert Love 156842e9a92fSRobert Love if (!lport->tt.lport_reset) 156942e9a92fSRobert Love lport->tt.lport_reset = fc_lport_reset; 157042e9a92fSRobert Love 157142e9a92fSRobert Love fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 157242e9a92fSRobert Love fc_host_node_name(lport->host) = lport->wwnn; 157342e9a92fSRobert Love fc_host_port_name(lport->host) = lport->wwpn; 157442e9a92fSRobert Love fc_host_supported_classes(lport->host) = FC_COS_CLASS3; 157542e9a92fSRobert Love memset(fc_host_supported_fc4s(lport->host), 0, 157642e9a92fSRobert Love sizeof(fc_host_supported_fc4s(lport->host))); 157742e9a92fSRobert Love fc_host_supported_fc4s(lport->host)[2] = 1; 157842e9a92fSRobert Love fc_host_supported_fc4s(lport->host)[7] = 1; 157942e9a92fSRobert Love 158042e9a92fSRobert Love /* This value is also unchanging */ 158142e9a92fSRobert Love memset(fc_host_active_fc4s(lport->host), 0, 158242e9a92fSRobert Love sizeof(fc_host_active_fc4s(lport->host))); 158342e9a92fSRobert Love fc_host_active_fc4s(lport->host)[2] = 1; 158442e9a92fSRobert Love fc_host_active_fc4s(lport->host)[7] = 1; 158542e9a92fSRobert Love fc_host_maxframe_size(lport->host) = lport->mfs; 158642e9a92fSRobert Love fc_host_supported_speeds(lport->host) = 0; 158742e9a92fSRobert Love if (lport->link_supported_speeds & FC_PORTSPEED_1GBIT) 158842e9a92fSRobert Love fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_1GBIT; 158942e9a92fSRobert Love if (lport->link_supported_speeds & FC_PORTSPEED_10GBIT) 159042e9a92fSRobert Love fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_10GBIT; 159142e9a92fSRobert Love 159242e9a92fSRobert Love return 0; 159342e9a92fSRobert Love } 159442e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_init); 1595