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 void fc_lport_error(struct fc_lport *, struct fc_frame *); 10542e9a92fSRobert Love 10642e9a92fSRobert Love static void fc_lport_enter_reset(struct fc_lport *); 10742e9a92fSRobert Love static void fc_lport_enter_flogi(struct fc_lport *); 10842e9a92fSRobert Love static void fc_lport_enter_dns(struct fc_lport *); 10942e9a92fSRobert Love static void fc_lport_enter_rpn_id(struct fc_lport *); 11042e9a92fSRobert Love static void fc_lport_enter_rft_id(struct fc_lport *); 11142e9a92fSRobert Love static void fc_lport_enter_scr(struct fc_lport *); 11242e9a92fSRobert Love static void fc_lport_enter_ready(struct fc_lport *); 11342e9a92fSRobert Love static void fc_lport_enter_logo(struct fc_lport *); 11442e9a92fSRobert Love 11542e9a92fSRobert Love static const char *fc_lport_state_names[] = { 116b1d9fd55SJoe Eykholt [LPORT_ST_DISABLED] = "disabled", 11742e9a92fSRobert Love [LPORT_ST_FLOGI] = "FLOGI", 11842e9a92fSRobert Love [LPORT_ST_DNS] = "dNS", 11942e9a92fSRobert Love [LPORT_ST_RPN_ID] = "RPN_ID", 12042e9a92fSRobert Love [LPORT_ST_RFT_ID] = "RFT_ID", 12142e9a92fSRobert Love [LPORT_ST_SCR] = "SCR", 12242e9a92fSRobert Love [LPORT_ST_READY] = "Ready", 12342e9a92fSRobert Love [LPORT_ST_LOGO] = "LOGO", 12442e9a92fSRobert Love [LPORT_ST_RESET] = "reset", 12542e9a92fSRobert Love }; 12642e9a92fSRobert Love 12742e9a92fSRobert Love static int fc_frame_drop(struct fc_lport *lport, struct fc_frame *fp) 12842e9a92fSRobert Love { 12942e9a92fSRobert Love fc_frame_free(fp); 13042e9a92fSRobert Love return 0; 13142e9a92fSRobert Love } 13242e9a92fSRobert Love 13342e9a92fSRobert Love /** 13434f42a07SRobert Love * fc_lport_rport_callback() - Event handler for rport events 13542e9a92fSRobert Love * @lport: The lport which is receiving the event 13642e9a92fSRobert Love * @rport: The rport which the event has occured on 13742e9a92fSRobert Love * @event: The event that occured 13842e9a92fSRobert Love * 13942e9a92fSRobert Love * Locking Note: The rport lock should not be held when calling 14042e9a92fSRobert Love * this function. 14142e9a92fSRobert Love */ 14242e9a92fSRobert Love static void fc_lport_rport_callback(struct fc_lport *lport, 14342e9a92fSRobert Love struct fc_rport *rport, 14442e9a92fSRobert Love enum fc_rport_event event) 14542e9a92fSRobert Love { 1467414705eSRobert Love FC_LPORT_DBG(lport, "Received a %d event for port (%6x)\n", event, 14742e9a92fSRobert Love rport->port_id); 14842e9a92fSRobert Love 14942e9a92fSRobert Love switch (event) { 15042e9a92fSRobert Love case RPORT_EV_CREATED: 15142e9a92fSRobert Love if (rport->port_id == FC_FID_DIR_SERV) { 15242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 15342e9a92fSRobert Love if (lport->state == LPORT_ST_DNS) { 15442e9a92fSRobert Love lport->dns_rp = rport; 15542e9a92fSRobert Love fc_lport_enter_rpn_id(lport); 15642e9a92fSRobert Love } else { 1577414705eSRobert Love FC_LPORT_DBG(lport, "Received an CREATED event " 1587414705eSRobert Love "on port (%6x) for the directory " 15942e9a92fSRobert Love "server, but the lport is not " 16042e9a92fSRobert Love "in the DNS state, it's in the " 16142e9a92fSRobert Love "%d state", rport->port_id, 16242e9a92fSRobert Love lport->state); 16342e9a92fSRobert Love lport->tt.rport_logoff(rport); 16442e9a92fSRobert Love } 16542e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 16642e9a92fSRobert Love } else 1677414705eSRobert Love FC_LPORT_DBG(lport, "Received an event for port (%6x) " 16842e9a92fSRobert Love "which is not the directory server\n", 16942e9a92fSRobert Love rport->port_id); 17042e9a92fSRobert Love break; 17142e9a92fSRobert Love case RPORT_EV_LOGO: 17242e9a92fSRobert Love case RPORT_EV_FAILED: 17342e9a92fSRobert Love case RPORT_EV_STOP: 17442e9a92fSRobert Love if (rport->port_id == FC_FID_DIR_SERV) { 17542e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 17642e9a92fSRobert Love lport->dns_rp = NULL; 17742e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 17842e9a92fSRobert Love 17942e9a92fSRobert Love } else 1807414705eSRobert Love FC_LPORT_DBG(lport, "Received an event for port (%6x) " 18142e9a92fSRobert Love "which is not the directory server\n", 18242e9a92fSRobert Love rport->port_id); 18342e9a92fSRobert Love break; 18442e9a92fSRobert Love case RPORT_EV_NONE: 18542e9a92fSRobert Love break; 18642e9a92fSRobert Love } 18742e9a92fSRobert Love } 18842e9a92fSRobert Love 18942e9a92fSRobert Love /** 19034f42a07SRobert Love * fc_lport_state() - Return a string which represents the lport's state 19142e9a92fSRobert Love * @lport: The lport whose state is to converted to a string 19242e9a92fSRobert Love */ 19342e9a92fSRobert Love static const char *fc_lport_state(struct fc_lport *lport) 19442e9a92fSRobert Love { 19542e9a92fSRobert Love const char *cp; 19642e9a92fSRobert Love 19742e9a92fSRobert Love cp = fc_lport_state_names[lport->state]; 19842e9a92fSRobert Love if (!cp) 19942e9a92fSRobert Love cp = "unknown"; 20042e9a92fSRobert Love return cp; 20142e9a92fSRobert Love } 20242e9a92fSRobert Love 20342e9a92fSRobert Love /** 20434f42a07SRobert Love * fc_lport_ptp_setup() - Create an rport for point-to-point mode 20542e9a92fSRobert Love * @lport: The lport to attach the ptp rport to 20642e9a92fSRobert Love * @fid: The FID of the ptp rport 20742e9a92fSRobert Love * @remote_wwpn: The WWPN of the ptp rport 20842e9a92fSRobert Love * @remote_wwnn: The WWNN of the ptp rport 20942e9a92fSRobert Love */ 21042e9a92fSRobert Love static void fc_lport_ptp_setup(struct fc_lport *lport, 21142e9a92fSRobert Love u32 remote_fid, u64 remote_wwpn, 21242e9a92fSRobert Love u64 remote_wwnn) 21342e9a92fSRobert Love { 21442e9a92fSRobert Love struct fc_disc_port dp; 21542e9a92fSRobert Love 21642e9a92fSRobert Love dp.lp = lport; 21742e9a92fSRobert Love dp.ids.port_id = remote_fid; 21842e9a92fSRobert Love dp.ids.port_name = remote_wwpn; 21942e9a92fSRobert Love dp.ids.node_name = remote_wwnn; 22042e9a92fSRobert Love dp.ids.roles = FC_RPORT_ROLE_UNKNOWN; 22142e9a92fSRobert Love 22242e9a92fSRobert Love if (lport->ptp_rp) { 22342e9a92fSRobert Love lport->tt.rport_logoff(lport->ptp_rp); 22442e9a92fSRobert Love lport->ptp_rp = NULL; 22542e9a92fSRobert Love } 22642e9a92fSRobert Love 2275101ff99SRobert Love lport->ptp_rp = lport->tt.rport_create(&dp); 22842e9a92fSRobert Love 22942e9a92fSRobert Love lport->tt.rport_login(lport->ptp_rp); 23042e9a92fSRobert Love 23142e9a92fSRobert Love fc_lport_enter_ready(lport); 23242e9a92fSRobert Love } 23342e9a92fSRobert Love 23442e9a92fSRobert Love void fc_get_host_port_type(struct Scsi_Host *shost) 23542e9a92fSRobert Love { 23642e9a92fSRobert Love /* TODO - currently just NPORT */ 23742e9a92fSRobert Love fc_host_port_type(shost) = FC_PORTTYPE_NPORT; 23842e9a92fSRobert Love } 23942e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_port_type); 24042e9a92fSRobert Love 24142e9a92fSRobert Love void fc_get_host_port_state(struct Scsi_Host *shost) 24242e9a92fSRobert Love { 24342e9a92fSRobert Love struct fc_lport *lp = shost_priv(shost); 24442e9a92fSRobert Love 245bc0e17f6SVasu Dev if (lp->link_up) 24642e9a92fSRobert Love fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; 24742e9a92fSRobert Love else 24842e9a92fSRobert Love fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; 24942e9a92fSRobert Love } 25042e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_port_state); 25142e9a92fSRobert Love 25242e9a92fSRobert Love void fc_get_host_speed(struct Scsi_Host *shost) 25342e9a92fSRobert Love { 25442e9a92fSRobert Love struct fc_lport *lport = shost_priv(shost); 25542e9a92fSRobert Love 25642e9a92fSRobert Love fc_host_speed(shost) = lport->link_speed; 25742e9a92fSRobert Love } 25842e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_speed); 25942e9a92fSRobert Love 26042e9a92fSRobert Love struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost) 26142e9a92fSRobert Love { 26242e9a92fSRobert Love struct fc_host_statistics *fcoe_stats; 26342e9a92fSRobert Love struct fc_lport *lp = shost_priv(shost); 26442e9a92fSRobert Love struct timespec v0, v1; 265582b45bcSRobert Love unsigned int cpu; 26642e9a92fSRobert Love 26742e9a92fSRobert Love fcoe_stats = &lp->host_stats; 26842e9a92fSRobert Love memset(fcoe_stats, 0, sizeof(struct fc_host_statistics)); 26942e9a92fSRobert Love 27042e9a92fSRobert Love jiffies_to_timespec(jiffies, &v0); 27142e9a92fSRobert Love jiffies_to_timespec(lp->boot_time, &v1); 27242e9a92fSRobert Love fcoe_stats->seconds_since_last_reset = (v0.tv_sec - v1.tv_sec); 27342e9a92fSRobert Love 274582b45bcSRobert Love for_each_possible_cpu(cpu) { 275582b45bcSRobert Love struct fcoe_dev_stats *stats; 276582b45bcSRobert Love 277582b45bcSRobert Love stats = per_cpu_ptr(lp->dev_stats, cpu); 278582b45bcSRobert Love 27942e9a92fSRobert Love fcoe_stats->tx_frames += stats->TxFrames; 28042e9a92fSRobert Love fcoe_stats->tx_words += stats->TxWords; 28142e9a92fSRobert Love fcoe_stats->rx_frames += stats->RxFrames; 28242e9a92fSRobert Love fcoe_stats->rx_words += stats->RxWords; 28342e9a92fSRobert Love fcoe_stats->error_frames += stats->ErrorFrames; 28442e9a92fSRobert Love fcoe_stats->invalid_crc_count += stats->InvalidCRCCount; 28542e9a92fSRobert Love fcoe_stats->fcp_input_requests += stats->InputRequests; 28642e9a92fSRobert Love fcoe_stats->fcp_output_requests += stats->OutputRequests; 28742e9a92fSRobert Love fcoe_stats->fcp_control_requests += stats->ControlRequests; 28842e9a92fSRobert Love fcoe_stats->fcp_input_megabytes += stats->InputMegabytes; 28942e9a92fSRobert Love fcoe_stats->fcp_output_megabytes += stats->OutputMegabytes; 29042e9a92fSRobert Love fcoe_stats->link_failure_count += stats->LinkFailureCount; 29142e9a92fSRobert Love } 29242e9a92fSRobert Love fcoe_stats->lip_count = -1; 29342e9a92fSRobert Love fcoe_stats->nos_count = -1; 29442e9a92fSRobert Love fcoe_stats->loss_of_sync_count = -1; 29542e9a92fSRobert Love fcoe_stats->loss_of_signal_count = -1; 29642e9a92fSRobert Love fcoe_stats->prim_seq_protocol_err_count = -1; 29742e9a92fSRobert Love fcoe_stats->dumped_frames = -1; 29842e9a92fSRobert Love return fcoe_stats; 29942e9a92fSRobert Love } 30042e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_stats); 30142e9a92fSRobert Love 30242e9a92fSRobert Love /* 30342e9a92fSRobert Love * Fill in FLOGI command for request. 30442e9a92fSRobert Love */ 30542e9a92fSRobert Love static void 30642e9a92fSRobert Love fc_lport_flogi_fill(struct fc_lport *lport, struct fc_els_flogi *flogi, 30742e9a92fSRobert Love unsigned int op) 30842e9a92fSRobert Love { 30942e9a92fSRobert Love struct fc_els_csp *sp; 31042e9a92fSRobert Love struct fc_els_cssp *cp; 31142e9a92fSRobert Love 31242e9a92fSRobert Love memset(flogi, 0, sizeof(*flogi)); 31342e9a92fSRobert Love flogi->fl_cmd = (u8) op; 31442e9a92fSRobert Love put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn); 31542e9a92fSRobert Love put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn); 31642e9a92fSRobert Love sp = &flogi->fl_csp; 31742e9a92fSRobert Love sp->sp_hi_ver = 0x20; 31842e9a92fSRobert Love sp->sp_lo_ver = 0x20; 31942e9a92fSRobert Love sp->sp_bb_cred = htons(10); /* this gets set by gateway */ 32042e9a92fSRobert Love sp->sp_bb_data = htons((u16) lport->mfs); 32142e9a92fSRobert Love cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */ 32242e9a92fSRobert Love cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ); 32342e9a92fSRobert Love if (op != ELS_FLOGI) { 32442e9a92fSRobert Love sp->sp_features = htons(FC_SP_FT_CIRO); 32542e9a92fSRobert Love sp->sp_tot_seq = htons(255); /* seq. we accept */ 32642e9a92fSRobert Love sp->sp_rel_off = htons(0x1f); 32742e9a92fSRobert Love sp->sp_e_d_tov = htonl(lport->e_d_tov); 32842e9a92fSRobert Love 32942e9a92fSRobert Love cp->cp_rdfs = htons((u16) lport->mfs); 33042e9a92fSRobert Love cp->cp_con_seq = htons(255); 33142e9a92fSRobert Love cp->cp_open_seq = 1; 33242e9a92fSRobert Love } 33342e9a92fSRobert Love } 33442e9a92fSRobert Love 33542e9a92fSRobert Love /* 33642e9a92fSRobert Love * Add a supported FC-4 type. 33742e9a92fSRobert Love */ 33842e9a92fSRobert Love static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type) 33942e9a92fSRobert Love { 34042e9a92fSRobert Love __be32 *mp; 34142e9a92fSRobert Love 34242e9a92fSRobert Love mp = &lport->fcts.ff_type_map[type / FC_NS_BPW]; 34342e9a92fSRobert Love *mp = htonl(ntohl(*mp) | 1UL << (type % FC_NS_BPW)); 34442e9a92fSRobert Love } 34542e9a92fSRobert Love 34642e9a92fSRobert Love /** 34734f42a07SRobert Love * fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report. 34842e9a92fSRobert Love * @lport: Fibre Channel local port recieving the RLIR 34942e9a92fSRobert Love * @sp: current sequence in the RLIR exchange 35042e9a92fSRobert Love * @fp: RLIR request frame 35142e9a92fSRobert Love * 35242e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 35342e9a92fSRobert Love * this function. 35442e9a92fSRobert Love */ 35542e9a92fSRobert Love static void fc_lport_recv_rlir_req(struct fc_seq *sp, struct fc_frame *fp, 35642e9a92fSRobert Love struct fc_lport *lport) 35742e9a92fSRobert Love { 3587414705eSRobert Love FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n", 35942e9a92fSRobert Love fc_lport_state(lport)); 36042e9a92fSRobert Love 36142e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); 36242e9a92fSRobert Love fc_frame_free(fp); 36342e9a92fSRobert Love } 36442e9a92fSRobert Love 36542e9a92fSRobert Love /** 36634f42a07SRobert Love * fc_lport_recv_echo_req() - Handle received ECHO request 36742e9a92fSRobert Love * @lport: Fibre Channel local port recieving the ECHO 36842e9a92fSRobert Love * @sp: current sequence in the ECHO exchange 36942e9a92fSRobert Love * @fp: ECHO request frame 37042e9a92fSRobert Love * 37142e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 37242e9a92fSRobert Love * this function. 37342e9a92fSRobert Love */ 37442e9a92fSRobert Love static void fc_lport_recv_echo_req(struct fc_seq *sp, struct fc_frame *in_fp, 37542e9a92fSRobert Love struct fc_lport *lport) 37642e9a92fSRobert Love { 37742e9a92fSRobert Love struct fc_frame *fp; 37842e9a92fSRobert Love struct fc_exch *ep = fc_seq_exch(sp); 37942e9a92fSRobert Love unsigned int len; 38042e9a92fSRobert Love void *pp; 38142e9a92fSRobert Love void *dp; 38242e9a92fSRobert Love u32 f_ctl; 38342e9a92fSRobert Love 3847414705eSRobert Love FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n", 38542e9a92fSRobert Love fc_lport_state(lport)); 38642e9a92fSRobert Love 38742e9a92fSRobert Love len = fr_len(in_fp) - sizeof(struct fc_frame_header); 38842e9a92fSRobert Love pp = fc_frame_payload_get(in_fp, len); 38942e9a92fSRobert Love 39042e9a92fSRobert Love if (len < sizeof(__be32)) 39142e9a92fSRobert Love len = sizeof(__be32); 39242e9a92fSRobert Love 39342e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 39442e9a92fSRobert Love if (fp) { 39542e9a92fSRobert Love dp = fc_frame_payload_get(fp, len); 39642e9a92fSRobert Love memcpy(dp, pp, len); 39742e9a92fSRobert Love *((u32 *)dp) = htonl(ELS_LS_ACC << 24); 39842e9a92fSRobert Love sp = lport->tt.seq_start_next(sp); 39942e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; 40042e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 40142e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 40242e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 40342e9a92fSRobert Love } 40442e9a92fSRobert Love fc_frame_free(in_fp); 40542e9a92fSRobert Love } 40642e9a92fSRobert Love 40742e9a92fSRobert Love /** 40834f42a07SRobert Love * fc_lport_recv_echo_req() - Handle received Request Node ID data request 40942e9a92fSRobert Love * @lport: Fibre Channel local port recieving the RNID 41042e9a92fSRobert Love * @sp: current sequence in the RNID exchange 41142e9a92fSRobert Love * @fp: RNID request frame 41242e9a92fSRobert Love * 41342e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 41442e9a92fSRobert Love * this function. 41542e9a92fSRobert Love */ 41642e9a92fSRobert Love static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp, 41742e9a92fSRobert Love struct fc_lport *lport) 41842e9a92fSRobert Love { 41942e9a92fSRobert Love struct fc_frame *fp; 42042e9a92fSRobert Love struct fc_exch *ep = fc_seq_exch(sp); 42142e9a92fSRobert Love struct fc_els_rnid *req; 42242e9a92fSRobert Love struct { 42342e9a92fSRobert Love struct fc_els_rnid_resp rnid; 42442e9a92fSRobert Love struct fc_els_rnid_cid cid; 42542e9a92fSRobert Love struct fc_els_rnid_gen gen; 42642e9a92fSRobert Love } *rp; 42742e9a92fSRobert Love struct fc_seq_els_data rjt_data; 42842e9a92fSRobert Love u8 fmt; 42942e9a92fSRobert Love size_t len; 43042e9a92fSRobert Love u32 f_ctl; 43142e9a92fSRobert Love 4327414705eSRobert Love FC_LPORT_DBG(lport, "Received RNID request while in state %s\n", 43342e9a92fSRobert Love fc_lport_state(lport)); 43442e9a92fSRobert Love 43542e9a92fSRobert Love req = fc_frame_payload_get(in_fp, sizeof(*req)); 43642e9a92fSRobert Love if (!req) { 43742e9a92fSRobert Love rjt_data.fp = NULL; 43842e9a92fSRobert Love rjt_data.reason = ELS_RJT_LOGIC; 43942e9a92fSRobert Love rjt_data.explan = ELS_EXPL_NONE; 44042e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); 44142e9a92fSRobert Love } else { 44242e9a92fSRobert Love fmt = req->rnid_fmt; 44342e9a92fSRobert Love len = sizeof(*rp); 44442e9a92fSRobert Love if (fmt != ELS_RNIDF_GEN || 44542e9a92fSRobert Love ntohl(lport->rnid_gen.rnid_atype) == 0) { 44642e9a92fSRobert Love fmt = ELS_RNIDF_NONE; /* nothing to provide */ 44742e9a92fSRobert Love len -= sizeof(rp->gen); 44842e9a92fSRobert Love } 44942e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 45042e9a92fSRobert Love if (fp) { 45142e9a92fSRobert Love rp = fc_frame_payload_get(fp, len); 45242e9a92fSRobert Love memset(rp, 0, len); 45342e9a92fSRobert Love rp->rnid.rnid_cmd = ELS_LS_ACC; 45442e9a92fSRobert Love rp->rnid.rnid_fmt = fmt; 45542e9a92fSRobert Love rp->rnid.rnid_cid_len = sizeof(rp->cid); 45642e9a92fSRobert Love rp->cid.rnid_wwpn = htonll(lport->wwpn); 45742e9a92fSRobert Love rp->cid.rnid_wwnn = htonll(lport->wwnn); 45842e9a92fSRobert Love if (fmt == ELS_RNIDF_GEN) { 45942e9a92fSRobert Love rp->rnid.rnid_sid_len = sizeof(rp->gen); 46042e9a92fSRobert Love memcpy(&rp->gen, &lport->rnid_gen, 46142e9a92fSRobert Love sizeof(rp->gen)); 46242e9a92fSRobert Love } 46342e9a92fSRobert Love sp = lport->tt.seq_start_next(sp); 46442e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; 46542e9a92fSRobert Love f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; 46642e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 46742e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 46842e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 46942e9a92fSRobert Love } 47042e9a92fSRobert Love } 47142e9a92fSRobert Love fc_frame_free(in_fp); 47242e9a92fSRobert Love } 47342e9a92fSRobert Love 47442e9a92fSRobert Love /** 47534f42a07SRobert Love * fc_lport_recv_adisc_req() - Handle received Address Discovery Request 47642e9a92fSRobert Love * @lport: Fibre Channel local port recieving the ADISC 47742e9a92fSRobert Love * @sp: current sequence in the ADISC exchange 47842e9a92fSRobert Love * @fp: ADISC request frame 47942e9a92fSRobert Love * 48042e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 48142e9a92fSRobert Love * this function. 48242e9a92fSRobert Love */ 48342e9a92fSRobert Love static void fc_lport_recv_adisc_req(struct fc_seq *sp, struct fc_frame *in_fp, 48442e9a92fSRobert Love struct fc_lport *lport) 48542e9a92fSRobert Love { 48642e9a92fSRobert Love struct fc_frame *fp; 48742e9a92fSRobert Love struct fc_exch *ep = fc_seq_exch(sp); 48842e9a92fSRobert Love struct fc_els_adisc *req, *rp; 48942e9a92fSRobert Love struct fc_seq_els_data rjt_data; 49042e9a92fSRobert Love size_t len; 49142e9a92fSRobert Love u32 f_ctl; 49242e9a92fSRobert Love 4937414705eSRobert Love FC_LPORT_DBG(lport, "Received ADISC request while in state %s\n", 49442e9a92fSRobert Love fc_lport_state(lport)); 49542e9a92fSRobert Love 49642e9a92fSRobert Love req = fc_frame_payload_get(in_fp, sizeof(*req)); 49742e9a92fSRobert Love if (!req) { 49842e9a92fSRobert Love rjt_data.fp = NULL; 49942e9a92fSRobert Love rjt_data.reason = ELS_RJT_LOGIC; 50042e9a92fSRobert Love rjt_data.explan = ELS_EXPL_NONE; 50142e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); 50242e9a92fSRobert Love } else { 50342e9a92fSRobert Love len = sizeof(*rp); 50442e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 50542e9a92fSRobert Love if (fp) { 50642e9a92fSRobert Love rp = fc_frame_payload_get(fp, len); 50742e9a92fSRobert Love memset(rp, 0, len); 50842e9a92fSRobert Love rp->adisc_cmd = ELS_LS_ACC; 50942e9a92fSRobert Love rp->adisc_wwpn = htonll(lport->wwpn); 51042e9a92fSRobert Love rp->adisc_wwnn = htonll(lport->wwnn); 51142e9a92fSRobert Love hton24(rp->adisc_port_id, 51242e9a92fSRobert Love fc_host_port_id(lport->host)); 51342e9a92fSRobert Love sp = lport->tt.seq_start_next(sp); 51442e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; 51542e9a92fSRobert Love f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; 51642e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 51742e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 51842e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 51942e9a92fSRobert Love } 52042e9a92fSRobert Love } 52142e9a92fSRobert Love fc_frame_free(in_fp); 52242e9a92fSRobert Love } 52342e9a92fSRobert Love 52442e9a92fSRobert Love /** 52534f42a07SRobert Love * fc_lport_recv_logo_req() - Handle received fabric LOGO request 52642e9a92fSRobert Love * @lport: Fibre Channel local port recieving the LOGO 52742e9a92fSRobert Love * @sp: current sequence in the LOGO exchange 52842e9a92fSRobert Love * @fp: LOGO request frame 52942e9a92fSRobert Love * 53042e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 53142e9a92fSRobert Love * this function. 53242e9a92fSRobert Love */ 53342e9a92fSRobert Love static void fc_lport_recv_logo_req(struct fc_seq *sp, struct fc_frame *fp, 53442e9a92fSRobert Love struct fc_lport *lport) 53542e9a92fSRobert Love { 53642e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); 53742e9a92fSRobert Love fc_lport_enter_reset(lport); 53842e9a92fSRobert Love fc_frame_free(fp); 53942e9a92fSRobert Love } 54042e9a92fSRobert Love 54142e9a92fSRobert Love /** 54234f42a07SRobert Love * fc_fabric_login() - Start the lport state machine 54342e9a92fSRobert Love * @lport: The lport that should log into the fabric 54442e9a92fSRobert Love * 54542e9a92fSRobert Love * Locking Note: This function should not be called 54642e9a92fSRobert Love * with the lport lock held. 54742e9a92fSRobert Love */ 54842e9a92fSRobert Love int fc_fabric_login(struct fc_lport *lport) 54942e9a92fSRobert Love { 55042e9a92fSRobert Love int rc = -1; 55142e9a92fSRobert Love 55242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 553b1d9fd55SJoe Eykholt if (lport->state == LPORT_ST_DISABLED) { 55442e9a92fSRobert Love fc_lport_enter_reset(lport); 55542e9a92fSRobert Love rc = 0; 55642e9a92fSRobert Love } 55742e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 55842e9a92fSRobert Love 55942e9a92fSRobert Love return rc; 56042e9a92fSRobert Love } 56142e9a92fSRobert Love EXPORT_SYMBOL(fc_fabric_login); 56242e9a92fSRobert Love 56342e9a92fSRobert Love /** 56434f42a07SRobert Love * fc_linkup() - Handler for transport linkup events 56542e9a92fSRobert Love * @lport: The lport whose link is up 56642e9a92fSRobert Love */ 56742e9a92fSRobert Love void fc_linkup(struct fc_lport *lport) 56842e9a92fSRobert Love { 5697414705eSRobert Love printk(KERN_INFO "libfc: Link up on port (%6x)\n", 57042e9a92fSRobert Love fc_host_port_id(lport->host)); 57142e9a92fSRobert Love 57242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 573bc0e17f6SVasu Dev if (!lport->link_up) { 574bc0e17f6SVasu Dev lport->link_up = 1; 57542e9a92fSRobert Love 57642e9a92fSRobert Love if (lport->state == LPORT_ST_RESET) 57742e9a92fSRobert Love fc_lport_enter_flogi(lport); 57842e9a92fSRobert Love } 57942e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 58042e9a92fSRobert Love } 58142e9a92fSRobert Love EXPORT_SYMBOL(fc_linkup); 58242e9a92fSRobert Love 58342e9a92fSRobert Love /** 58434f42a07SRobert Love * fc_linkdown() - Handler for transport linkdown events 58542e9a92fSRobert Love * @lport: The lport whose link is down 58642e9a92fSRobert Love */ 58742e9a92fSRobert Love void fc_linkdown(struct fc_lport *lport) 58842e9a92fSRobert Love { 58942e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 5907414705eSRobert Love printk(KERN_INFO "libfc: Link down on port (%6x)\n", 59142e9a92fSRobert Love fc_host_port_id(lport->host)); 59242e9a92fSRobert Love 593bc0e17f6SVasu Dev if (lport->link_up) { 594bc0e17f6SVasu Dev lport->link_up = 0; 59542e9a92fSRobert Love fc_lport_enter_reset(lport); 59642e9a92fSRobert Love lport->tt.fcp_cleanup(lport); 59742e9a92fSRobert Love } 59842e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 59942e9a92fSRobert Love } 60042e9a92fSRobert Love EXPORT_SYMBOL(fc_linkdown); 60142e9a92fSRobert Love 60242e9a92fSRobert Love /** 60334f42a07SRobert Love * fc_fabric_logoff() - Logout of the fabric 60442e9a92fSRobert Love * @lport: fc_lport pointer to logoff the fabric 60542e9a92fSRobert Love * 60642e9a92fSRobert Love * Return value: 60742e9a92fSRobert Love * 0 for success, -1 for failure 60834f42a07SRobert Love */ 60942e9a92fSRobert Love int fc_fabric_logoff(struct fc_lport *lport) 61042e9a92fSRobert Love { 61142e9a92fSRobert Love lport->tt.disc_stop_final(lport); 61242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 613a0fd2e49SAbhijeet Joglekar if (lport->dns_rp) 614a0fd2e49SAbhijeet Joglekar lport->tt.rport_logoff(lport->dns_rp); 615a0fd2e49SAbhijeet Joglekar mutex_unlock(&lport->lp_mutex); 616a0fd2e49SAbhijeet Joglekar lport->tt.rport_flush_queue(); 617a0fd2e49SAbhijeet Joglekar mutex_lock(&lport->lp_mutex); 61842e9a92fSRobert Love fc_lport_enter_logo(lport); 61942e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 620f7db2c15SSteve Ma cancel_delayed_work_sync(&lport->retry_work); 62142e9a92fSRobert Love return 0; 62242e9a92fSRobert Love } 62342e9a92fSRobert Love EXPORT_SYMBOL(fc_fabric_logoff); 62442e9a92fSRobert Love 62542e9a92fSRobert Love /** 62634f42a07SRobert Love * fc_lport_destroy() - unregister a fc_lport 62742e9a92fSRobert Love * @lport: fc_lport pointer to unregister 62842e9a92fSRobert Love * 62942e9a92fSRobert Love * Return value: 63042e9a92fSRobert Love * None 63142e9a92fSRobert Love * Note: 63242e9a92fSRobert Love * exit routine for fc_lport instance 63342e9a92fSRobert Love * clean-up all the allocated memory 63442e9a92fSRobert Love * and free up other system resources. 63542e9a92fSRobert Love * 63634f42a07SRobert Love */ 63742e9a92fSRobert Love int fc_lport_destroy(struct fc_lport *lport) 63842e9a92fSRobert Love { 639bbf15669SAbhijeet Joglekar mutex_lock(&lport->lp_mutex); 640b1d9fd55SJoe Eykholt lport->state = LPORT_ST_DISABLED; 641bbf15669SAbhijeet Joglekar lport->link_up = 0; 64242e9a92fSRobert Love lport->tt.frame_send = fc_frame_drop; 643bbf15669SAbhijeet Joglekar mutex_unlock(&lport->lp_mutex); 644bbf15669SAbhijeet Joglekar 64542e9a92fSRobert Love lport->tt.fcp_abort_io(lport); 6461f6ff364SAbhijeet Joglekar lport->tt.exch_mgr_reset(lport, 0, 0); 64742e9a92fSRobert Love return 0; 64842e9a92fSRobert Love } 64942e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_destroy); 65042e9a92fSRobert Love 65142e9a92fSRobert Love /** 65234f42a07SRobert Love * fc_set_mfs() - sets up the mfs for the corresponding fc_lport 65342e9a92fSRobert Love * @lport: fc_lport pointer to unregister 65442e9a92fSRobert Love * @mfs: the new mfs for fc_lport 65542e9a92fSRobert Love * 65642e9a92fSRobert Love * Set mfs for the given fc_lport to the new mfs. 65742e9a92fSRobert Love * 65842e9a92fSRobert Love * Return: 0 for success 65934f42a07SRobert Love */ 66042e9a92fSRobert Love int fc_set_mfs(struct fc_lport *lport, u32 mfs) 66142e9a92fSRobert Love { 66242e9a92fSRobert Love unsigned int old_mfs; 66342e9a92fSRobert Love int rc = -EINVAL; 66442e9a92fSRobert Love 66542e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 66642e9a92fSRobert Love 66742e9a92fSRobert Love old_mfs = lport->mfs; 66842e9a92fSRobert Love 66942e9a92fSRobert Love if (mfs >= FC_MIN_MAX_FRAME) { 67042e9a92fSRobert Love mfs &= ~3; 67142e9a92fSRobert Love if (mfs > FC_MAX_FRAME) 67242e9a92fSRobert Love mfs = FC_MAX_FRAME; 67342e9a92fSRobert Love mfs -= sizeof(struct fc_frame_header); 67442e9a92fSRobert Love lport->mfs = mfs; 67542e9a92fSRobert Love rc = 0; 67642e9a92fSRobert Love } 67742e9a92fSRobert Love 67842e9a92fSRobert Love if (!rc && mfs < old_mfs) 67942e9a92fSRobert Love fc_lport_enter_reset(lport); 68042e9a92fSRobert Love 68142e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 68242e9a92fSRobert Love 68342e9a92fSRobert Love return rc; 68442e9a92fSRobert Love } 68542e9a92fSRobert Love EXPORT_SYMBOL(fc_set_mfs); 68642e9a92fSRobert Love 68742e9a92fSRobert Love /** 68834f42a07SRobert Love * fc_lport_disc_callback() - Callback for discovery events 68942e9a92fSRobert Love * @lport: FC local port 69042e9a92fSRobert Love * @event: The discovery event 69142e9a92fSRobert Love */ 69242e9a92fSRobert Love void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event) 69342e9a92fSRobert Love { 69442e9a92fSRobert Love switch (event) { 69542e9a92fSRobert Love case DISC_EV_SUCCESS: 6967414705eSRobert Love FC_LPORT_DBG(lport, "Discovery succeeded\n"); 69742e9a92fSRobert Love break; 69842e9a92fSRobert Love case DISC_EV_FAILED: 6997414705eSRobert Love printk(KERN_ERR "libfc: Discovery failed for port (%6x)\n", 70042e9a92fSRobert Love fc_host_port_id(lport->host)); 70142e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 70242e9a92fSRobert Love fc_lport_enter_reset(lport); 70342e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 70442e9a92fSRobert Love break; 70542e9a92fSRobert Love case DISC_EV_NONE: 70642e9a92fSRobert Love WARN_ON(1); 70742e9a92fSRobert Love break; 70842e9a92fSRobert Love } 70942e9a92fSRobert Love } 71042e9a92fSRobert Love 71142e9a92fSRobert Love /** 71234f42a07SRobert Love * fc_rport_enter_ready() - Enter the ready state and start discovery 71342e9a92fSRobert Love * @lport: Fibre Channel local port that is ready 71442e9a92fSRobert Love * 71542e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 71642e9a92fSRobert Love * this routine. 71742e9a92fSRobert Love */ 71842e9a92fSRobert Love static void fc_lport_enter_ready(struct fc_lport *lport) 71942e9a92fSRobert Love { 7207414705eSRobert Love FC_LPORT_DBG(lport, "Entered READY from state %s\n", 7217414705eSRobert Love fc_lport_state(lport)); 72242e9a92fSRobert Love 72342e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_READY); 72442e9a92fSRobert Love 72542e9a92fSRobert Love lport->tt.disc_start(fc_lport_disc_callback, lport); 72642e9a92fSRobert Love } 72742e9a92fSRobert Love 72842e9a92fSRobert Love /** 72934f42a07SRobert Love * fc_lport_recv_flogi_req() - Receive a FLOGI request 73042e9a92fSRobert Love * @sp_in: The sequence the FLOGI is on 73142e9a92fSRobert Love * @rx_fp: The frame the FLOGI is in 73242e9a92fSRobert Love * @lport: The lport that recieved the request 73342e9a92fSRobert Love * 73442e9a92fSRobert Love * A received FLOGI request indicates a point-to-point connection. 73542e9a92fSRobert Love * Accept it with the common service parameters indicating our N port. 73642e9a92fSRobert Love * Set up to do a PLOGI if we have the higher-number WWPN. 73742e9a92fSRobert Love * 73842e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 73942e9a92fSRobert Love * this function. 74042e9a92fSRobert Love */ 74142e9a92fSRobert Love static void fc_lport_recv_flogi_req(struct fc_seq *sp_in, 74242e9a92fSRobert Love struct fc_frame *rx_fp, 74342e9a92fSRobert Love struct fc_lport *lport) 74442e9a92fSRobert Love { 74542e9a92fSRobert Love struct fc_frame *fp; 74642e9a92fSRobert Love struct fc_frame_header *fh; 74742e9a92fSRobert Love struct fc_seq *sp; 74842e9a92fSRobert Love struct fc_exch *ep; 74942e9a92fSRobert Love struct fc_els_flogi *flp; 75042e9a92fSRobert Love struct fc_els_flogi *new_flp; 75142e9a92fSRobert Love u64 remote_wwpn; 75242e9a92fSRobert Love u32 remote_fid; 75342e9a92fSRobert Love u32 local_fid; 75442e9a92fSRobert Love u32 f_ctl; 75542e9a92fSRobert Love 7567414705eSRobert Love FC_LPORT_DBG(lport, "Received FLOGI request while in state %s\n", 75742e9a92fSRobert Love fc_lport_state(lport)); 75842e9a92fSRobert Love 75942e9a92fSRobert Love fh = fc_frame_header_get(rx_fp); 76042e9a92fSRobert Love remote_fid = ntoh24(fh->fh_s_id); 76142e9a92fSRobert Love flp = fc_frame_payload_get(rx_fp, sizeof(*flp)); 76242e9a92fSRobert Love if (!flp) 76342e9a92fSRobert Love goto out; 76442e9a92fSRobert Love remote_wwpn = get_unaligned_be64(&flp->fl_wwpn); 76542e9a92fSRobert Love if (remote_wwpn == lport->wwpn) { 7667414705eSRobert Love printk(KERN_WARNING "libfc: Received FLOGI from port " 7677414705eSRobert Love "with same WWPN %llx\n", remote_wwpn); 76842e9a92fSRobert Love goto out; 76942e9a92fSRobert Love } 7707414705eSRobert Love FC_LPORT_DBG(lport, "FLOGI from port WWPN %llx\n", remote_wwpn); 77142e9a92fSRobert Love 77242e9a92fSRobert Love /* 77342e9a92fSRobert Love * XXX what is the right thing to do for FIDs? 77442e9a92fSRobert Love * The originator might expect our S_ID to be 0xfffffe. 77542e9a92fSRobert Love * But if so, both of us could end up with the same FID. 77642e9a92fSRobert Love */ 77742e9a92fSRobert Love local_fid = FC_LOCAL_PTP_FID_LO; 77842e9a92fSRobert Love if (remote_wwpn < lport->wwpn) { 77942e9a92fSRobert Love local_fid = FC_LOCAL_PTP_FID_HI; 78042e9a92fSRobert Love if (!remote_fid || remote_fid == local_fid) 78142e9a92fSRobert Love remote_fid = FC_LOCAL_PTP_FID_LO; 78242e9a92fSRobert Love } else if (!remote_fid) { 78342e9a92fSRobert Love remote_fid = FC_LOCAL_PTP_FID_HI; 78442e9a92fSRobert Love } 78542e9a92fSRobert Love 78642e9a92fSRobert Love fc_host_port_id(lport->host) = local_fid; 78742e9a92fSRobert Love 78842e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(*flp)); 78942e9a92fSRobert Love if (fp) { 79042e9a92fSRobert Love sp = lport->tt.seq_start_next(fr_seq(rx_fp)); 79142e9a92fSRobert Love new_flp = fc_frame_payload_get(fp, sizeof(*flp)); 79242e9a92fSRobert Love fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI); 79342e9a92fSRobert Love new_flp->fl_cmd = (u8) ELS_LS_ACC; 79442e9a92fSRobert Love 79542e9a92fSRobert Love /* 79642e9a92fSRobert Love * Send the response. If this fails, the originator should 79742e9a92fSRobert Love * repeat the sequence. 79842e9a92fSRobert Love */ 79942e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; 80042e9a92fSRobert Love ep = fc_seq_exch(sp); 80142e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 80242e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 80342e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 80442e9a92fSRobert Love 80542e9a92fSRobert Love } else { 80642e9a92fSRobert Love fc_lport_error(lport, fp); 80742e9a92fSRobert Love } 80842e9a92fSRobert Love fc_lport_ptp_setup(lport, remote_fid, remote_wwpn, 80942e9a92fSRobert Love get_unaligned_be64(&flp->fl_wwnn)); 81042e9a92fSRobert Love 81142e9a92fSRobert Love lport->tt.disc_start(fc_lport_disc_callback, lport); 81242e9a92fSRobert Love 81342e9a92fSRobert Love out: 81442e9a92fSRobert Love sp = fr_seq(rx_fp); 81542e9a92fSRobert Love fc_frame_free(rx_fp); 81642e9a92fSRobert Love } 81742e9a92fSRobert Love 81842e9a92fSRobert Love /** 81934f42a07SRobert Love * fc_lport_recv_req() - The generic lport request handler 82042e9a92fSRobert Love * @lport: The lport that received the request 82142e9a92fSRobert Love * @sp: The sequence the request is on 82242e9a92fSRobert Love * @fp: The frame the request is in 82342e9a92fSRobert Love * 82442e9a92fSRobert Love * This function will see if the lport handles the request or 82542e9a92fSRobert Love * if an rport should handle the request. 82642e9a92fSRobert Love * 82742e9a92fSRobert Love * Locking Note: This function should not be called with the lport 82842e9a92fSRobert Love * lock held becuase it will grab the lock. 82942e9a92fSRobert Love */ 83042e9a92fSRobert Love static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp, 83142e9a92fSRobert Love struct fc_frame *fp) 83242e9a92fSRobert Love { 83342e9a92fSRobert Love struct fc_frame_header *fh = fc_frame_header_get(fp); 83442e9a92fSRobert Love void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *); 83542e9a92fSRobert Love struct fc_rport *rport; 83642e9a92fSRobert Love u32 s_id; 83742e9a92fSRobert Love u32 d_id; 83842e9a92fSRobert Love struct fc_seq_els_data rjt_data; 83942e9a92fSRobert Love 84042e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 84142e9a92fSRobert Love 84242e9a92fSRobert Love /* 84342e9a92fSRobert Love * Handle special ELS cases like FLOGI, LOGO, and 84442e9a92fSRobert Love * RSCN here. These don't require a session. 84542e9a92fSRobert Love * Even if we had a session, it might not be ready. 84642e9a92fSRobert Love */ 84742e9a92fSRobert Love if (fh->fh_type == FC_TYPE_ELS && fh->fh_r_ctl == FC_RCTL_ELS_REQ) { 84842e9a92fSRobert Love /* 84942e9a92fSRobert Love * Check opcode. 85042e9a92fSRobert Love */ 85142e9a92fSRobert Love recv = NULL; 85242e9a92fSRobert Love switch (fc_frame_payload_op(fp)) { 85342e9a92fSRobert Love case ELS_FLOGI: 85442e9a92fSRobert Love recv = fc_lport_recv_flogi_req; 85542e9a92fSRobert Love break; 85642e9a92fSRobert Love case ELS_LOGO: 85742e9a92fSRobert Love fh = fc_frame_header_get(fp); 85842e9a92fSRobert Love if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) 85942e9a92fSRobert Love recv = fc_lport_recv_logo_req; 86042e9a92fSRobert Love break; 86142e9a92fSRobert Love case ELS_RSCN: 86242e9a92fSRobert Love recv = lport->tt.disc_recv_req; 86342e9a92fSRobert Love break; 86442e9a92fSRobert Love case ELS_ECHO: 86542e9a92fSRobert Love recv = fc_lport_recv_echo_req; 86642e9a92fSRobert Love break; 86742e9a92fSRobert Love case ELS_RLIR: 86842e9a92fSRobert Love recv = fc_lport_recv_rlir_req; 86942e9a92fSRobert Love break; 87042e9a92fSRobert Love case ELS_RNID: 87142e9a92fSRobert Love recv = fc_lport_recv_rnid_req; 87242e9a92fSRobert Love break; 87342e9a92fSRobert Love case ELS_ADISC: 87442e9a92fSRobert Love recv = fc_lport_recv_adisc_req; 87542e9a92fSRobert Love break; 87642e9a92fSRobert Love } 87742e9a92fSRobert Love 87842e9a92fSRobert Love if (recv) 87942e9a92fSRobert Love recv(sp, fp, lport); 88042e9a92fSRobert Love else { 88142e9a92fSRobert Love /* 88242e9a92fSRobert Love * Find session. 88342e9a92fSRobert Love * If this is a new incoming PLOGI, we won't find it. 88442e9a92fSRobert Love */ 88542e9a92fSRobert Love s_id = ntoh24(fh->fh_s_id); 88642e9a92fSRobert Love d_id = ntoh24(fh->fh_d_id); 88742e9a92fSRobert Love 88842e9a92fSRobert Love rport = lport->tt.rport_lookup(lport, s_id); 88942e9a92fSRobert Love if (rport) 89042e9a92fSRobert Love lport->tt.rport_recv_req(sp, fp, rport); 89142e9a92fSRobert Love else { 89242e9a92fSRobert Love rjt_data.fp = NULL; 89342e9a92fSRobert Love rjt_data.reason = ELS_RJT_UNAB; 89442e9a92fSRobert Love rjt_data.explan = ELS_EXPL_NONE; 89542e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, 89642e9a92fSRobert Love ELS_LS_RJT, 89742e9a92fSRobert Love &rjt_data); 89842e9a92fSRobert Love fc_frame_free(fp); 89942e9a92fSRobert Love } 90042e9a92fSRobert Love } 90142e9a92fSRobert Love } else { 9027414705eSRobert Love FC_LPORT_DBG(lport, "dropping invalid frame (eof %x)\n", 9037414705eSRobert Love fr_eof(fp)); 90442e9a92fSRobert Love fc_frame_free(fp); 90542e9a92fSRobert Love } 90642e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 90742e9a92fSRobert Love 90842e9a92fSRobert Love /* 90942e9a92fSRobert Love * The common exch_done for all request may not be good 91042e9a92fSRobert Love * if any request requires longer hold on exhange. XXX 91142e9a92fSRobert Love */ 91242e9a92fSRobert Love lport->tt.exch_done(sp); 91342e9a92fSRobert Love } 91442e9a92fSRobert Love 91542e9a92fSRobert Love /** 91634f42a07SRobert Love * fc_lport_reset() - Reset an lport 91742e9a92fSRobert Love * @lport: The lport which should be reset 91842e9a92fSRobert Love * 91942e9a92fSRobert Love * Locking Note: This functions should not be called with the 92042e9a92fSRobert Love * lport lock held. 92142e9a92fSRobert Love */ 92242e9a92fSRobert Love int fc_lport_reset(struct fc_lport *lport) 92342e9a92fSRobert Love { 924f7db2c15SSteve Ma cancel_delayed_work_sync(&lport->retry_work); 92542e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 92642e9a92fSRobert Love fc_lport_enter_reset(lport); 92742e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 92842e9a92fSRobert Love return 0; 92942e9a92fSRobert Love } 93042e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_reset); 93142e9a92fSRobert Love 93242e9a92fSRobert Love /** 9331190d925SJoe Eykholt * fc_lport_reset_locked() - Reset the local port 93442e9a92fSRobert Love * @lport: Fibre Channel local port to be reset 93542e9a92fSRobert Love * 93642e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 93742e9a92fSRobert Love * this routine. 93842e9a92fSRobert Love */ 9391190d925SJoe Eykholt static void fc_lport_reset_locked(struct fc_lport *lport) 94042e9a92fSRobert Love { 94142e9a92fSRobert Love if (lport->dns_rp) 94242e9a92fSRobert Love lport->tt.rport_logoff(lport->dns_rp); 94342e9a92fSRobert Love 94442e9a92fSRobert Love if (lport->ptp_rp) { 94542e9a92fSRobert Love lport->tt.rport_logoff(lport->ptp_rp); 94642e9a92fSRobert Love lport->ptp_rp = NULL; 94742e9a92fSRobert Love } 94842e9a92fSRobert Love 94942e9a92fSRobert Love lport->tt.disc_stop(lport); 95042e9a92fSRobert Love 9511f6ff364SAbhijeet Joglekar lport->tt.exch_mgr_reset(lport, 0, 0); 95242e9a92fSRobert Love fc_host_fabric_name(lport->host) = 0; 95342e9a92fSRobert Love fc_host_port_id(lport->host) = 0; 9541190d925SJoe Eykholt } 95542e9a92fSRobert Love 9561190d925SJoe Eykholt /** 9571190d925SJoe Eykholt * fc_lport_enter_reset() - Reset the local port 9581190d925SJoe Eykholt * @lport: Fibre Channel local port to be reset 9591190d925SJoe Eykholt * 9601190d925SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 9611190d925SJoe Eykholt * this routine. 9621190d925SJoe Eykholt */ 9631190d925SJoe Eykholt static void fc_lport_enter_reset(struct fc_lport *lport) 9641190d925SJoe Eykholt { 9651190d925SJoe Eykholt FC_LPORT_DBG(lport, "Entered RESET state from %s state\n", 9661190d925SJoe Eykholt fc_lport_state(lport)); 9671190d925SJoe Eykholt 9681190d925SJoe Eykholt fc_lport_state_enter(lport, LPORT_ST_RESET); 9691190d925SJoe Eykholt fc_lport_reset_locked(lport); 970bc0e17f6SVasu Dev if (lport->link_up) 97142e9a92fSRobert Love fc_lport_enter_flogi(lport); 97242e9a92fSRobert Love } 97342e9a92fSRobert Love 97442e9a92fSRobert Love /** 9751190d925SJoe Eykholt * fc_lport_enter_disabled() - disable the local port 9761190d925SJoe Eykholt * @lport: Fibre Channel local port to be reset 9771190d925SJoe Eykholt * 9781190d925SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 9791190d925SJoe Eykholt * this routine. 9801190d925SJoe Eykholt */ 9811190d925SJoe Eykholt static void fc_lport_enter_disabled(struct fc_lport *lport) 9821190d925SJoe Eykholt { 9831190d925SJoe Eykholt FC_LPORT_DBG(lport, "Entered disabled state from %s state\n", 9841190d925SJoe Eykholt fc_lport_state(lport)); 9851190d925SJoe Eykholt 9861190d925SJoe Eykholt fc_lport_state_enter(lport, LPORT_ST_DISABLED); 9871190d925SJoe Eykholt fc_lport_reset_locked(lport); 9881190d925SJoe Eykholt } 9891190d925SJoe Eykholt 9901190d925SJoe Eykholt /** 99134f42a07SRobert Love * fc_lport_error() - Handler for any errors 99242e9a92fSRobert Love * @lport: The fc_lport object 99342e9a92fSRobert Love * @fp: The frame pointer 99442e9a92fSRobert Love * 99542e9a92fSRobert Love * If the error was caused by a resource allocation failure 99642e9a92fSRobert Love * then wait for half a second and retry, otherwise retry 99742e9a92fSRobert Love * after the e_d_tov time. 99842e9a92fSRobert Love */ 99942e9a92fSRobert Love static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp) 100042e9a92fSRobert Love { 100142e9a92fSRobert Love unsigned long delay = 0; 10027414705eSRobert Love FC_LPORT_DBG(lport, "Error %ld in state %s, retries %d\n", 100342e9a92fSRobert Love PTR_ERR(fp), fc_lport_state(lport), 100442e9a92fSRobert Love lport->retry_count); 100542e9a92fSRobert Love 100642e9a92fSRobert Love if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) { 100742e9a92fSRobert Love /* 100842e9a92fSRobert Love * Memory allocation failure, or the exchange timed out. 100942e9a92fSRobert Love * Retry after delay 101042e9a92fSRobert Love */ 101142e9a92fSRobert Love if (lport->retry_count < lport->max_retry_count) { 101242e9a92fSRobert Love lport->retry_count++; 101342e9a92fSRobert Love if (!fp) 101442e9a92fSRobert Love delay = msecs_to_jiffies(500); 101542e9a92fSRobert Love else 101642e9a92fSRobert Love delay = msecs_to_jiffies(lport->e_d_tov); 101742e9a92fSRobert Love 101842e9a92fSRobert Love schedule_delayed_work(&lport->retry_work, delay); 101942e9a92fSRobert Love } else { 102042e9a92fSRobert Love switch (lport->state) { 1021b1d9fd55SJoe Eykholt case LPORT_ST_DISABLED: 102242e9a92fSRobert Love case LPORT_ST_READY: 102342e9a92fSRobert Love case LPORT_ST_RESET: 102442e9a92fSRobert Love case LPORT_ST_RPN_ID: 102542e9a92fSRobert Love case LPORT_ST_RFT_ID: 102642e9a92fSRobert Love case LPORT_ST_SCR: 102742e9a92fSRobert Love case LPORT_ST_DNS: 102842e9a92fSRobert Love case LPORT_ST_FLOGI: 102942e9a92fSRobert Love case LPORT_ST_LOGO: 103042e9a92fSRobert Love fc_lport_enter_reset(lport); 103142e9a92fSRobert Love break; 103242e9a92fSRobert Love } 103342e9a92fSRobert Love } 103442e9a92fSRobert Love } 103542e9a92fSRobert Love } 103642e9a92fSRobert Love 103742e9a92fSRobert Love /** 103834f42a07SRobert Love * fc_lport_rft_id_resp() - Handle response to Register Fibre 103942e9a92fSRobert Love * Channel Types by ID (RPN_ID) request 104042e9a92fSRobert Love * @sp: current sequence in RPN_ID exchange 104142e9a92fSRobert Love * @fp: response frame 104242e9a92fSRobert Love * @lp_arg: Fibre Channel host port instance 104342e9a92fSRobert Love * 104442e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 104542e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 104642e9a92fSRobert Love * and then unlock the lport. 104742e9a92fSRobert Love */ 104842e9a92fSRobert Love static void fc_lport_rft_id_resp(struct fc_seq *sp, struct fc_frame *fp, 104942e9a92fSRobert Love void *lp_arg) 105042e9a92fSRobert Love { 105142e9a92fSRobert Love struct fc_lport *lport = lp_arg; 105242e9a92fSRobert Love struct fc_frame_header *fh; 105342e9a92fSRobert Love struct fc_ct_hdr *ct; 105442e9a92fSRobert Love 105542e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 105642e9a92fSRobert Love return; 105742e9a92fSRobert Love 105842e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 105942e9a92fSRobert Love 10607414705eSRobert Love FC_LPORT_DBG(lport, "Received a RFT_ID response\n"); 106142e9a92fSRobert Love 106242e9a92fSRobert Love if (lport->state != LPORT_ST_RFT_ID) { 10637414705eSRobert Love FC_LPORT_DBG(lport, "Received a RFT_ID response, but in state " 10647414705eSRobert Love "%s\n", fc_lport_state(lport)); 106576f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 106676f6804eSAbhijeet Joglekar goto err; 106742e9a92fSRobert Love goto out; 106842e9a92fSRobert Love } 106942e9a92fSRobert Love 107076f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 107176f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 107276f6804eSAbhijeet Joglekar goto err; 107376f6804eSAbhijeet Joglekar } 107476f6804eSAbhijeet Joglekar 107542e9a92fSRobert Love fh = fc_frame_header_get(fp); 107642e9a92fSRobert Love ct = fc_frame_payload_get(fp, sizeof(*ct)); 107742e9a92fSRobert Love 107842e9a92fSRobert Love if (fh && ct && fh->fh_type == FC_TYPE_CT && 107942e9a92fSRobert Love ct->ct_fs_type == FC_FST_DIR && 108042e9a92fSRobert Love ct->ct_fs_subtype == FC_NS_SUBTYPE && 108142e9a92fSRobert Love ntohs(ct->ct_cmd) == FC_FS_ACC) 108242e9a92fSRobert Love fc_lport_enter_scr(lport); 108342e9a92fSRobert Love else 108442e9a92fSRobert Love fc_lport_error(lport, fp); 108542e9a92fSRobert Love out: 108642e9a92fSRobert Love fc_frame_free(fp); 108742e9a92fSRobert Love err: 108842e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 108942e9a92fSRobert Love } 109042e9a92fSRobert Love 109142e9a92fSRobert Love /** 109234f42a07SRobert Love * fc_lport_rpn_id_resp() - Handle response to Register Port 109342e9a92fSRobert Love * Name by ID (RPN_ID) request 109442e9a92fSRobert Love * @sp: current sequence in RPN_ID exchange 109542e9a92fSRobert Love * @fp: response frame 109642e9a92fSRobert Love * @lp_arg: Fibre Channel host port instance 109742e9a92fSRobert Love * 109842e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 109942e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 110042e9a92fSRobert Love * and then unlock the lport. 110142e9a92fSRobert Love */ 110242e9a92fSRobert Love static void fc_lport_rpn_id_resp(struct fc_seq *sp, struct fc_frame *fp, 110342e9a92fSRobert Love void *lp_arg) 110442e9a92fSRobert Love { 110542e9a92fSRobert Love struct fc_lport *lport = lp_arg; 110642e9a92fSRobert Love struct fc_frame_header *fh; 110742e9a92fSRobert Love struct fc_ct_hdr *ct; 110842e9a92fSRobert Love 110942e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 111042e9a92fSRobert Love return; 111142e9a92fSRobert Love 111242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 111342e9a92fSRobert Love 11147414705eSRobert Love FC_LPORT_DBG(lport, "Received a RPN_ID response\n"); 111542e9a92fSRobert Love 111642e9a92fSRobert Love if (lport->state != LPORT_ST_RPN_ID) { 11177414705eSRobert Love FC_LPORT_DBG(lport, "Received a RPN_ID response, but in state " 11187414705eSRobert Love "%s\n", fc_lport_state(lport)); 111976f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 112076f6804eSAbhijeet Joglekar goto err; 112142e9a92fSRobert Love goto out; 112242e9a92fSRobert Love } 112342e9a92fSRobert Love 112476f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 112576f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 112676f6804eSAbhijeet Joglekar goto err; 112776f6804eSAbhijeet Joglekar } 112876f6804eSAbhijeet Joglekar 112942e9a92fSRobert Love fh = fc_frame_header_get(fp); 113042e9a92fSRobert Love ct = fc_frame_payload_get(fp, sizeof(*ct)); 113142e9a92fSRobert Love if (fh && ct && fh->fh_type == FC_TYPE_CT && 113242e9a92fSRobert Love ct->ct_fs_type == FC_FST_DIR && 113342e9a92fSRobert Love ct->ct_fs_subtype == FC_NS_SUBTYPE && 113442e9a92fSRobert Love ntohs(ct->ct_cmd) == FC_FS_ACC) 113542e9a92fSRobert Love fc_lport_enter_rft_id(lport); 113642e9a92fSRobert Love else 113742e9a92fSRobert Love fc_lport_error(lport, fp); 113842e9a92fSRobert Love 113942e9a92fSRobert Love out: 114042e9a92fSRobert Love fc_frame_free(fp); 114142e9a92fSRobert Love err: 114242e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 114342e9a92fSRobert Love } 114442e9a92fSRobert Love 114542e9a92fSRobert Love /** 114634f42a07SRobert Love * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request 114742e9a92fSRobert Love * @sp: current sequence in SCR exchange 114842e9a92fSRobert Love * @fp: response frame 114942e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the registration request 115042e9a92fSRobert Love * 115142e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 115242e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 115342e9a92fSRobert Love * and then unlock the lport. 115442e9a92fSRobert Love */ 115542e9a92fSRobert Love static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp, 115642e9a92fSRobert Love void *lp_arg) 115742e9a92fSRobert Love { 115842e9a92fSRobert Love struct fc_lport *lport = lp_arg; 115942e9a92fSRobert Love u8 op; 116042e9a92fSRobert Love 116142e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 116242e9a92fSRobert Love return; 116342e9a92fSRobert Love 116442e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 116542e9a92fSRobert Love 11667414705eSRobert Love FC_LPORT_DBG(lport, "Received a SCR response\n"); 116742e9a92fSRobert Love 116842e9a92fSRobert Love if (lport->state != LPORT_ST_SCR) { 11697414705eSRobert Love FC_LPORT_DBG(lport, "Received a SCR response, but in state " 11707414705eSRobert Love "%s\n", fc_lport_state(lport)); 117176f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 117276f6804eSAbhijeet Joglekar goto err; 117342e9a92fSRobert Love goto out; 117442e9a92fSRobert Love } 117542e9a92fSRobert Love 117676f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 117776f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 117876f6804eSAbhijeet Joglekar goto err; 117976f6804eSAbhijeet Joglekar } 118076f6804eSAbhijeet Joglekar 118142e9a92fSRobert Love op = fc_frame_payload_op(fp); 118242e9a92fSRobert Love if (op == ELS_LS_ACC) 118342e9a92fSRobert Love fc_lport_enter_ready(lport); 118442e9a92fSRobert Love else 118542e9a92fSRobert Love fc_lport_error(lport, fp); 118642e9a92fSRobert Love 118742e9a92fSRobert Love out: 118842e9a92fSRobert Love fc_frame_free(fp); 118942e9a92fSRobert Love err: 119042e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 119142e9a92fSRobert Love } 119242e9a92fSRobert Love 119342e9a92fSRobert Love /** 119434f42a07SRobert Love * fc_lport_enter_scr() - Send a State Change Register (SCR) request 119542e9a92fSRobert Love * @lport: Fibre Channel local port to register for state changes 119642e9a92fSRobert Love * 119742e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 119842e9a92fSRobert Love * this routine. 119942e9a92fSRobert Love */ 120042e9a92fSRobert Love static void fc_lport_enter_scr(struct fc_lport *lport) 120142e9a92fSRobert Love { 120242e9a92fSRobert Love struct fc_frame *fp; 120342e9a92fSRobert Love 12047414705eSRobert Love FC_LPORT_DBG(lport, "Entered SCR state from %s state\n", 12057414705eSRobert Love fc_lport_state(lport)); 120642e9a92fSRobert Love 120742e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_SCR); 120842e9a92fSRobert Love 120942e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr)); 121042e9a92fSRobert Love if (!fp) { 121142e9a92fSRobert Love fc_lport_error(lport, fp); 121242e9a92fSRobert Love return; 121342e9a92fSRobert Love } 121442e9a92fSRobert Love 121542e9a92fSRobert Love if (!lport->tt.elsct_send(lport, NULL, fp, ELS_SCR, 121642e9a92fSRobert Love fc_lport_scr_resp, lport, lport->e_d_tov)) 121742e9a92fSRobert Love fc_lport_error(lport, fp); 121842e9a92fSRobert Love } 121942e9a92fSRobert Love 122042e9a92fSRobert Love /** 122134f42a07SRobert Love * fc_lport_enter_rft_id() - Register FC4-types with the name server 122242e9a92fSRobert Love * @lport: Fibre Channel local port to register 122342e9a92fSRobert Love * 122442e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 122542e9a92fSRobert Love * this routine. 122642e9a92fSRobert Love */ 122742e9a92fSRobert Love static void fc_lport_enter_rft_id(struct fc_lport *lport) 122842e9a92fSRobert Love { 122942e9a92fSRobert Love struct fc_frame *fp; 123042e9a92fSRobert Love struct fc_ns_fts *lps; 123142e9a92fSRobert Love int i; 123242e9a92fSRobert Love 12337414705eSRobert Love FC_LPORT_DBG(lport, "Entered RFT_ID state from %s state\n", 12347414705eSRobert Love fc_lport_state(lport)); 123542e9a92fSRobert Love 123642e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_RFT_ID); 123742e9a92fSRobert Love 123842e9a92fSRobert Love lps = &lport->fcts; 123942e9a92fSRobert Love i = sizeof(lps->ff_type_map) / sizeof(lps->ff_type_map[0]); 124042e9a92fSRobert Love while (--i >= 0) 124142e9a92fSRobert Love if (ntohl(lps->ff_type_map[i]) != 0) 124242e9a92fSRobert Love break; 124342e9a92fSRobert Love if (i < 0) { 124442e9a92fSRobert Love /* nothing to register, move on to SCR */ 124542e9a92fSRobert Love fc_lport_enter_scr(lport); 124642e9a92fSRobert Love return; 124742e9a92fSRobert Love } 124842e9a92fSRobert Love 124942e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + 125042e9a92fSRobert Love sizeof(struct fc_ns_rft)); 125142e9a92fSRobert Love if (!fp) { 125242e9a92fSRobert Love fc_lport_error(lport, fp); 125342e9a92fSRobert Love return; 125442e9a92fSRobert Love } 125542e9a92fSRobert Love 125642e9a92fSRobert Love if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RFT_ID, 125742e9a92fSRobert Love fc_lport_rft_id_resp, 125842e9a92fSRobert Love lport, lport->e_d_tov)) 125942e9a92fSRobert Love fc_lport_error(lport, fp); 126042e9a92fSRobert Love } 126142e9a92fSRobert Love 126242e9a92fSRobert Love /** 126334f42a07SRobert Love * fc_rport_enter_rft_id() - Register port name with the name server 126442e9a92fSRobert Love * @lport: Fibre Channel local port to register 126542e9a92fSRobert Love * 126642e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 126742e9a92fSRobert Love * this routine. 126842e9a92fSRobert Love */ 126942e9a92fSRobert Love static void fc_lport_enter_rpn_id(struct fc_lport *lport) 127042e9a92fSRobert Love { 127142e9a92fSRobert Love struct fc_frame *fp; 127242e9a92fSRobert Love 12737414705eSRobert Love FC_LPORT_DBG(lport, "Entered RPN_ID state from %s state\n", 12747414705eSRobert Love fc_lport_state(lport)); 127542e9a92fSRobert Love 127642e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_RPN_ID); 127742e9a92fSRobert Love 127842e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + 127942e9a92fSRobert Love sizeof(struct fc_ns_rn_id)); 128042e9a92fSRobert Love if (!fp) { 128142e9a92fSRobert Love fc_lport_error(lport, fp); 128242e9a92fSRobert Love return; 128342e9a92fSRobert Love } 128442e9a92fSRobert Love 128542e9a92fSRobert Love if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RPN_ID, 128642e9a92fSRobert Love fc_lport_rpn_id_resp, 128742e9a92fSRobert Love lport, lport->e_d_tov)) 128842e9a92fSRobert Love fc_lport_error(lport, fp); 128942e9a92fSRobert Love } 129042e9a92fSRobert Love 129142e9a92fSRobert Love static struct fc_rport_operations fc_lport_rport_ops = { 129242e9a92fSRobert Love .event_callback = fc_lport_rport_callback, 129342e9a92fSRobert Love }; 129442e9a92fSRobert Love 129542e9a92fSRobert Love /** 129634f42a07SRobert Love * fc_rport_enter_dns() - Create a rport to the name server 129742e9a92fSRobert Love * @lport: Fibre Channel local port requesting a rport for the name server 129842e9a92fSRobert Love * 129942e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 130042e9a92fSRobert Love * this routine. 130142e9a92fSRobert Love */ 130242e9a92fSRobert Love static void fc_lport_enter_dns(struct fc_lport *lport) 130342e9a92fSRobert Love { 130442e9a92fSRobert Love struct fc_rport *rport; 130542e9a92fSRobert Love struct fc_rport_libfc_priv *rdata; 130642e9a92fSRobert Love struct fc_disc_port dp; 130742e9a92fSRobert Love 130842e9a92fSRobert Love dp.ids.port_id = FC_FID_DIR_SERV; 130942e9a92fSRobert Love dp.ids.port_name = -1; 131042e9a92fSRobert Love dp.ids.node_name = -1; 131142e9a92fSRobert Love dp.ids.roles = FC_RPORT_ROLE_UNKNOWN; 131242e9a92fSRobert Love dp.lp = lport; 131342e9a92fSRobert Love 13147414705eSRobert Love FC_LPORT_DBG(lport, "Entered DNS state from %s state\n", 13157414705eSRobert Love fc_lport_state(lport)); 131642e9a92fSRobert Love 131742e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_DNS); 131842e9a92fSRobert Love 13195101ff99SRobert Love rport = lport->tt.rport_create(&dp); 132042e9a92fSRobert Love if (!rport) 132142e9a92fSRobert Love goto err; 132242e9a92fSRobert Love 132342e9a92fSRobert Love rdata = rport->dd_data; 132442e9a92fSRobert Love rdata->ops = &fc_lport_rport_ops; 132542e9a92fSRobert Love lport->tt.rport_login(rport); 132642e9a92fSRobert Love return; 132742e9a92fSRobert Love 132842e9a92fSRobert Love err: 132942e9a92fSRobert Love fc_lport_error(lport, NULL); 133042e9a92fSRobert Love } 133142e9a92fSRobert Love 133242e9a92fSRobert Love /** 133334f42a07SRobert Love * fc_lport_timeout() - Handler for the retry_work timer. 133442e9a92fSRobert Love * @work: The work struct of the fc_lport 133542e9a92fSRobert Love */ 133642e9a92fSRobert Love static void fc_lport_timeout(struct work_struct *work) 133742e9a92fSRobert Love { 133842e9a92fSRobert Love struct fc_lport *lport = 133942e9a92fSRobert Love container_of(work, struct fc_lport, 134042e9a92fSRobert Love retry_work.work); 134142e9a92fSRobert Love 134242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 134342e9a92fSRobert Love 134442e9a92fSRobert Love switch (lport->state) { 1345b1d9fd55SJoe Eykholt case LPORT_ST_DISABLED: 134642e9a92fSRobert Love case LPORT_ST_READY: 134742e9a92fSRobert Love case LPORT_ST_RESET: 134842e9a92fSRobert Love WARN_ON(1); 134942e9a92fSRobert Love break; 135042e9a92fSRobert Love case LPORT_ST_FLOGI: 135142e9a92fSRobert Love fc_lport_enter_flogi(lport); 135242e9a92fSRobert Love break; 135342e9a92fSRobert Love case LPORT_ST_DNS: 135442e9a92fSRobert Love fc_lport_enter_dns(lport); 135542e9a92fSRobert Love break; 135642e9a92fSRobert Love case LPORT_ST_RPN_ID: 135742e9a92fSRobert Love fc_lport_enter_rpn_id(lport); 135842e9a92fSRobert Love break; 135942e9a92fSRobert Love case LPORT_ST_RFT_ID: 136042e9a92fSRobert Love fc_lport_enter_rft_id(lport); 136142e9a92fSRobert Love break; 136242e9a92fSRobert Love case LPORT_ST_SCR: 136342e9a92fSRobert Love fc_lport_enter_scr(lport); 136442e9a92fSRobert Love break; 136542e9a92fSRobert Love case LPORT_ST_LOGO: 136642e9a92fSRobert Love fc_lport_enter_logo(lport); 136742e9a92fSRobert Love break; 136842e9a92fSRobert Love } 136942e9a92fSRobert Love 137042e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 137142e9a92fSRobert Love } 137242e9a92fSRobert Love 137342e9a92fSRobert Love /** 137434f42a07SRobert Love * fc_lport_logo_resp() - Handle response to LOGO request 137542e9a92fSRobert Love * @sp: current sequence in LOGO exchange 137642e9a92fSRobert Love * @fp: response frame 137742e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the LOGO request 137842e9a92fSRobert Love * 137942e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 138042e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 138142e9a92fSRobert Love * and then unlock the lport. 138242e9a92fSRobert Love */ 138342e9a92fSRobert Love static void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp, 138442e9a92fSRobert Love void *lp_arg) 138542e9a92fSRobert Love { 138642e9a92fSRobert Love struct fc_lport *lport = lp_arg; 138742e9a92fSRobert Love u8 op; 138842e9a92fSRobert Love 138942e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 139042e9a92fSRobert Love return; 139142e9a92fSRobert Love 139242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 139342e9a92fSRobert Love 13947414705eSRobert Love FC_LPORT_DBG(lport, "Received a LOGO response\n"); 139542e9a92fSRobert Love 139642e9a92fSRobert Love if (lport->state != LPORT_ST_LOGO) { 13977414705eSRobert Love FC_LPORT_DBG(lport, "Received a LOGO response, but in state " 13987414705eSRobert Love "%s\n", fc_lport_state(lport)); 139976f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 140076f6804eSAbhijeet Joglekar goto err; 140142e9a92fSRobert Love goto out; 140242e9a92fSRobert Love } 140342e9a92fSRobert Love 140476f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 140576f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 140676f6804eSAbhijeet Joglekar goto err; 140776f6804eSAbhijeet Joglekar } 140876f6804eSAbhijeet Joglekar 140942e9a92fSRobert Love op = fc_frame_payload_op(fp); 141042e9a92fSRobert Love if (op == ELS_LS_ACC) 14111190d925SJoe Eykholt fc_lport_enter_disabled(lport); 141242e9a92fSRobert Love else 141342e9a92fSRobert Love fc_lport_error(lport, fp); 141442e9a92fSRobert Love 141542e9a92fSRobert Love out: 141642e9a92fSRobert Love fc_frame_free(fp); 141742e9a92fSRobert Love err: 141842e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 141942e9a92fSRobert Love } 142042e9a92fSRobert Love 142142e9a92fSRobert Love /** 142234f42a07SRobert Love * fc_rport_enter_logo() - Logout of the fabric 142342e9a92fSRobert Love * @lport: Fibre Channel local port to be logged out 142442e9a92fSRobert Love * 142542e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 142642e9a92fSRobert Love * this routine. 142742e9a92fSRobert Love */ 142842e9a92fSRobert Love static void fc_lport_enter_logo(struct fc_lport *lport) 142942e9a92fSRobert Love { 143042e9a92fSRobert Love struct fc_frame *fp; 143142e9a92fSRobert Love struct fc_els_logo *logo; 143242e9a92fSRobert Love 14337414705eSRobert Love FC_LPORT_DBG(lport, "Entered LOGO state from %s state\n", 14347414705eSRobert Love fc_lport_state(lport)); 143542e9a92fSRobert Love 143642e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_LOGO); 143742e9a92fSRobert Love 143842e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(*logo)); 143942e9a92fSRobert Love if (!fp) { 144042e9a92fSRobert Love fc_lport_error(lport, fp); 144142e9a92fSRobert Love return; 144242e9a92fSRobert Love } 144342e9a92fSRobert Love 144442e9a92fSRobert Love if (!lport->tt.elsct_send(lport, NULL, fp, ELS_LOGO, fc_lport_logo_resp, 144542e9a92fSRobert Love lport, lport->e_d_tov)) 144642e9a92fSRobert Love fc_lport_error(lport, fp); 144742e9a92fSRobert Love } 144842e9a92fSRobert Love 144942e9a92fSRobert Love /** 145034f42a07SRobert Love * fc_lport_flogi_resp() - Handle response to FLOGI request 145142e9a92fSRobert Love * @sp: current sequence in FLOGI exchange 145242e9a92fSRobert Love * @fp: response frame 145342e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the FLOGI request 145442e9a92fSRobert Love * 145542e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 145642e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 145742e9a92fSRobert Love * and then unlock the lport. 145842e9a92fSRobert Love */ 145942e9a92fSRobert Love static void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, 146042e9a92fSRobert Love void *lp_arg) 146142e9a92fSRobert Love { 146242e9a92fSRobert Love struct fc_lport *lport = lp_arg; 146342e9a92fSRobert Love struct fc_frame_header *fh; 146442e9a92fSRobert Love struct fc_els_flogi *flp; 146542e9a92fSRobert Love u32 did; 146642e9a92fSRobert Love u16 csp_flags; 146742e9a92fSRobert Love unsigned int r_a_tov; 146842e9a92fSRobert Love unsigned int e_d_tov; 146942e9a92fSRobert Love u16 mfs; 147042e9a92fSRobert Love 147142e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 147242e9a92fSRobert Love return; 147342e9a92fSRobert Love 147442e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 147542e9a92fSRobert Love 14767414705eSRobert Love FC_LPORT_DBG(lport, "Received a FLOGI response\n"); 147742e9a92fSRobert Love 147842e9a92fSRobert Love if (lport->state != LPORT_ST_FLOGI) { 14797414705eSRobert Love FC_LPORT_DBG(lport, "Received a FLOGI response, but in state " 14807414705eSRobert Love "%s\n", fc_lport_state(lport)); 148176f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 148276f6804eSAbhijeet Joglekar goto err; 148342e9a92fSRobert Love goto out; 148442e9a92fSRobert Love } 148542e9a92fSRobert Love 148676f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 148776f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 148876f6804eSAbhijeet Joglekar goto err; 148976f6804eSAbhijeet Joglekar } 149076f6804eSAbhijeet Joglekar 149142e9a92fSRobert Love fh = fc_frame_header_get(fp); 149242e9a92fSRobert Love did = ntoh24(fh->fh_d_id); 149342e9a92fSRobert Love if (fc_frame_payload_op(fp) == ELS_LS_ACC && did != 0) { 149442e9a92fSRobert Love 14957414705eSRobert Love printk(KERN_INFO "libfc: Assigned FID (%6x) in FLOGI response\n", 14967414705eSRobert Love did); 149742e9a92fSRobert Love fc_host_port_id(lport->host) = did; 149842e9a92fSRobert Love 149942e9a92fSRobert Love flp = fc_frame_payload_get(fp, sizeof(*flp)); 150042e9a92fSRobert Love if (flp) { 150142e9a92fSRobert Love mfs = ntohs(flp->fl_csp.sp_bb_data) & 150242e9a92fSRobert Love FC_SP_BB_DATA_MASK; 150342e9a92fSRobert Love if (mfs >= FC_SP_MIN_MAX_PAYLOAD && 150442e9a92fSRobert Love mfs < lport->mfs) 150542e9a92fSRobert Love lport->mfs = mfs; 150642e9a92fSRobert Love csp_flags = ntohs(flp->fl_csp.sp_features); 150742e9a92fSRobert Love r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov); 150842e9a92fSRobert Love e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov); 150942e9a92fSRobert Love if (csp_flags & FC_SP_FT_EDTR) 151042e9a92fSRobert Love e_d_tov /= 1000000; 151142e9a92fSRobert Love if ((csp_flags & FC_SP_FT_FPORT) == 0) { 151242e9a92fSRobert Love if (e_d_tov > lport->e_d_tov) 151342e9a92fSRobert Love lport->e_d_tov = e_d_tov; 151442e9a92fSRobert Love lport->r_a_tov = 2 * e_d_tov; 15157414705eSRobert Love printk(KERN_INFO "libfc: Port (%6x) entered " 15167414705eSRobert Love "point to point mode\n", did); 151742e9a92fSRobert Love fc_lport_ptp_setup(lport, ntoh24(fh->fh_s_id), 151842e9a92fSRobert Love get_unaligned_be64( 151942e9a92fSRobert Love &flp->fl_wwpn), 152042e9a92fSRobert Love get_unaligned_be64( 152142e9a92fSRobert Love &flp->fl_wwnn)); 152242e9a92fSRobert Love } else { 152342e9a92fSRobert Love lport->e_d_tov = e_d_tov; 152442e9a92fSRobert Love lport->r_a_tov = r_a_tov; 152542e9a92fSRobert Love fc_host_fabric_name(lport->host) = 152642e9a92fSRobert Love get_unaligned_be64(&flp->fl_wwnn); 152742e9a92fSRobert Love fc_lport_enter_dns(lport); 152842e9a92fSRobert Love } 152942e9a92fSRobert Love } 153042e9a92fSRobert Love 153142e9a92fSRobert Love if (flp) { 153242e9a92fSRobert Love csp_flags = ntohs(flp->fl_csp.sp_features); 153342e9a92fSRobert Love if ((csp_flags & FC_SP_FT_FPORT) == 0) { 153442e9a92fSRobert Love lport->tt.disc_start(fc_lport_disc_callback, 153542e9a92fSRobert Love lport); 153642e9a92fSRobert Love } 153742e9a92fSRobert Love } 153842e9a92fSRobert Love } else { 15397414705eSRobert Love FC_LPORT_DBG(lport, "Bad FLOGI response\n"); 154042e9a92fSRobert Love } 154142e9a92fSRobert Love 154242e9a92fSRobert Love out: 154342e9a92fSRobert Love fc_frame_free(fp); 154442e9a92fSRobert Love err: 154542e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 154642e9a92fSRobert Love } 154742e9a92fSRobert Love 154842e9a92fSRobert Love /** 154934f42a07SRobert Love * fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager 155042e9a92fSRobert Love * @lport: Fibre Channel local port to be logged in to the fabric 155142e9a92fSRobert Love * 155242e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 155342e9a92fSRobert Love * this routine. 155442e9a92fSRobert Love */ 155542e9a92fSRobert Love void fc_lport_enter_flogi(struct fc_lport *lport) 155642e9a92fSRobert Love { 155742e9a92fSRobert Love struct fc_frame *fp; 155842e9a92fSRobert Love 15597414705eSRobert Love FC_LPORT_DBG(lport, "Entered FLOGI state from %s state\n", 15607414705eSRobert Love fc_lport_state(lport)); 156142e9a92fSRobert Love 156242e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_FLOGI); 156342e9a92fSRobert Love 156442e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 156542e9a92fSRobert Love if (!fp) 156642e9a92fSRobert Love return fc_lport_error(lport, fp); 156742e9a92fSRobert Love 156842e9a92fSRobert Love if (!lport->tt.elsct_send(lport, NULL, fp, ELS_FLOGI, 156942e9a92fSRobert Love fc_lport_flogi_resp, lport, lport->e_d_tov)) 157042e9a92fSRobert Love fc_lport_error(lport, fp); 157142e9a92fSRobert Love } 157242e9a92fSRobert Love 157342e9a92fSRobert Love /* Configure a fc_lport */ 157442e9a92fSRobert Love int fc_lport_config(struct fc_lport *lport) 157542e9a92fSRobert Love { 157642e9a92fSRobert Love INIT_DELAYED_WORK(&lport->retry_work, fc_lport_timeout); 157742e9a92fSRobert Love mutex_init(&lport->lp_mutex); 157842e9a92fSRobert Love 1579b1d9fd55SJoe Eykholt fc_lport_state_enter(lport, LPORT_ST_DISABLED); 158042e9a92fSRobert Love 158142e9a92fSRobert Love fc_lport_add_fc4_type(lport, FC_TYPE_FCP); 158242e9a92fSRobert Love fc_lport_add_fc4_type(lport, FC_TYPE_CT); 158342e9a92fSRobert Love 158442e9a92fSRobert Love return 0; 158542e9a92fSRobert Love } 158642e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_config); 158742e9a92fSRobert Love 158842e9a92fSRobert Love int fc_lport_init(struct fc_lport *lport) 158942e9a92fSRobert Love { 159042e9a92fSRobert Love if (!lport->tt.lport_recv) 159142e9a92fSRobert Love lport->tt.lport_recv = fc_lport_recv_req; 159242e9a92fSRobert Love 159342e9a92fSRobert Love if (!lport->tt.lport_reset) 159442e9a92fSRobert Love lport->tt.lport_reset = fc_lport_reset; 159542e9a92fSRobert Love 159642e9a92fSRobert Love fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 159742e9a92fSRobert Love fc_host_node_name(lport->host) = lport->wwnn; 159842e9a92fSRobert Love fc_host_port_name(lport->host) = lport->wwpn; 159942e9a92fSRobert Love fc_host_supported_classes(lport->host) = FC_COS_CLASS3; 160042e9a92fSRobert Love memset(fc_host_supported_fc4s(lport->host), 0, 160142e9a92fSRobert Love sizeof(fc_host_supported_fc4s(lport->host))); 160242e9a92fSRobert Love fc_host_supported_fc4s(lport->host)[2] = 1; 160342e9a92fSRobert Love fc_host_supported_fc4s(lport->host)[7] = 1; 160442e9a92fSRobert Love 160542e9a92fSRobert Love /* This value is also unchanging */ 160642e9a92fSRobert Love memset(fc_host_active_fc4s(lport->host), 0, 160742e9a92fSRobert Love sizeof(fc_host_active_fc4s(lport->host))); 160842e9a92fSRobert Love fc_host_active_fc4s(lport->host)[2] = 1; 160942e9a92fSRobert Love fc_host_active_fc4s(lport->host)[7] = 1; 161042e9a92fSRobert Love fc_host_maxframe_size(lport->host) = lport->mfs; 161142e9a92fSRobert Love fc_host_supported_speeds(lport->host) = 0; 161242e9a92fSRobert Love if (lport->link_supported_speeds & FC_PORTSPEED_1GBIT) 161342e9a92fSRobert Love fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_1GBIT; 161442e9a92fSRobert Love if (lport->link_supported_speeds & FC_PORTSPEED_10GBIT) 161542e9a92fSRobert Love fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_10GBIT; 161642e9a92fSRobert Love 161742e9a92fSRobert Love return 0; 161842e9a92fSRobert Love } 161942e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_init); 1620