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 /** 14242e9a92fSRobert 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 /** 19842e9a92fSRobert 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 /** 21242e9a92fSRobert 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 23542e9a92fSRobert Love lport->ptp_rp = fc_rport_rogue_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 25342e9a92fSRobert Love if ((lp->link_status & FC_LINK_UP) == FC_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 int i; 27142e9a92fSRobert Love struct fc_host_statistics *fcoe_stats; 27242e9a92fSRobert Love struct fc_lport *lp = shost_priv(shost); 27342e9a92fSRobert Love struct timespec v0, v1; 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 28242e9a92fSRobert Love for_each_online_cpu(i) { 28342e9a92fSRobert Love struct fcoe_dev_stats *stats = lp->dev_stats[i]; 28442e9a92fSRobert Love if (stats == NULL) 28542e9a92fSRobert Love continue; 28642e9a92fSRobert Love fcoe_stats->tx_frames += stats->TxFrames; 28742e9a92fSRobert Love fcoe_stats->tx_words += stats->TxWords; 28842e9a92fSRobert Love fcoe_stats->rx_frames += stats->RxFrames; 28942e9a92fSRobert Love fcoe_stats->rx_words += stats->RxWords; 29042e9a92fSRobert Love fcoe_stats->error_frames += stats->ErrorFrames; 29142e9a92fSRobert Love fcoe_stats->invalid_crc_count += stats->InvalidCRCCount; 29242e9a92fSRobert Love fcoe_stats->fcp_input_requests += stats->InputRequests; 29342e9a92fSRobert Love fcoe_stats->fcp_output_requests += stats->OutputRequests; 29442e9a92fSRobert Love fcoe_stats->fcp_control_requests += stats->ControlRequests; 29542e9a92fSRobert Love fcoe_stats->fcp_input_megabytes += stats->InputMegabytes; 29642e9a92fSRobert Love fcoe_stats->fcp_output_megabytes += stats->OutputMegabytes; 29742e9a92fSRobert Love fcoe_stats->link_failure_count += stats->LinkFailureCount; 29842e9a92fSRobert Love } 29942e9a92fSRobert Love fcoe_stats->lip_count = -1; 30042e9a92fSRobert Love fcoe_stats->nos_count = -1; 30142e9a92fSRobert Love fcoe_stats->loss_of_sync_count = -1; 30242e9a92fSRobert Love fcoe_stats->loss_of_signal_count = -1; 30342e9a92fSRobert Love fcoe_stats->prim_seq_protocol_err_count = -1; 30442e9a92fSRobert Love fcoe_stats->dumped_frames = -1; 30542e9a92fSRobert Love return fcoe_stats; 30642e9a92fSRobert Love } 30742e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_stats); 30842e9a92fSRobert Love 30942e9a92fSRobert Love /* 31042e9a92fSRobert Love * Fill in FLOGI command for request. 31142e9a92fSRobert Love */ 31242e9a92fSRobert Love static void 31342e9a92fSRobert Love fc_lport_flogi_fill(struct fc_lport *lport, struct fc_els_flogi *flogi, 31442e9a92fSRobert Love unsigned int op) 31542e9a92fSRobert Love { 31642e9a92fSRobert Love struct fc_els_csp *sp; 31742e9a92fSRobert Love struct fc_els_cssp *cp; 31842e9a92fSRobert Love 31942e9a92fSRobert Love memset(flogi, 0, sizeof(*flogi)); 32042e9a92fSRobert Love flogi->fl_cmd = (u8) op; 32142e9a92fSRobert Love put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn); 32242e9a92fSRobert Love put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn); 32342e9a92fSRobert Love sp = &flogi->fl_csp; 32442e9a92fSRobert Love sp->sp_hi_ver = 0x20; 32542e9a92fSRobert Love sp->sp_lo_ver = 0x20; 32642e9a92fSRobert Love sp->sp_bb_cred = htons(10); /* this gets set by gateway */ 32742e9a92fSRobert Love sp->sp_bb_data = htons((u16) lport->mfs); 32842e9a92fSRobert Love cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */ 32942e9a92fSRobert Love cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ); 33042e9a92fSRobert Love if (op != ELS_FLOGI) { 33142e9a92fSRobert Love sp->sp_features = htons(FC_SP_FT_CIRO); 33242e9a92fSRobert Love sp->sp_tot_seq = htons(255); /* seq. we accept */ 33342e9a92fSRobert Love sp->sp_rel_off = htons(0x1f); 33442e9a92fSRobert Love sp->sp_e_d_tov = htonl(lport->e_d_tov); 33542e9a92fSRobert Love 33642e9a92fSRobert Love cp->cp_rdfs = htons((u16) lport->mfs); 33742e9a92fSRobert Love cp->cp_con_seq = htons(255); 33842e9a92fSRobert Love cp->cp_open_seq = 1; 33942e9a92fSRobert Love } 34042e9a92fSRobert Love } 34142e9a92fSRobert Love 34242e9a92fSRobert Love /* 34342e9a92fSRobert Love * Add a supported FC-4 type. 34442e9a92fSRobert Love */ 34542e9a92fSRobert Love static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type) 34642e9a92fSRobert Love { 34742e9a92fSRobert Love __be32 *mp; 34842e9a92fSRobert Love 34942e9a92fSRobert Love mp = &lport->fcts.ff_type_map[type / FC_NS_BPW]; 35042e9a92fSRobert Love *mp = htonl(ntohl(*mp) | 1UL << (type % FC_NS_BPW)); 35142e9a92fSRobert Love } 35242e9a92fSRobert Love 35342e9a92fSRobert Love /** 35442e9a92fSRobert Love * fc_lport_recv_rlir_req - Handle received Registered Link Incident Report. 35542e9a92fSRobert Love * @lport: Fibre Channel local port recieving the RLIR 35642e9a92fSRobert Love * @sp: current sequence in the RLIR exchange 35742e9a92fSRobert Love * @fp: RLIR request frame 35842e9a92fSRobert Love * 35942e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 36042e9a92fSRobert Love * this function. 36142e9a92fSRobert Love */ 36242e9a92fSRobert Love static void fc_lport_recv_rlir_req(struct fc_seq *sp, struct fc_frame *fp, 36342e9a92fSRobert Love struct fc_lport *lport) 36442e9a92fSRobert Love { 36542e9a92fSRobert Love FC_DEBUG_LPORT("Received RLIR request while in state %s\n", 36642e9a92fSRobert Love fc_lport_state(lport)); 36742e9a92fSRobert Love 36842e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); 36942e9a92fSRobert Love fc_frame_free(fp); 37042e9a92fSRobert Love } 37142e9a92fSRobert Love 37242e9a92fSRobert Love /** 37342e9a92fSRobert Love * fc_lport_recv_echo_req - Handle received ECHO request 37442e9a92fSRobert Love * @lport: Fibre Channel local port recieving the ECHO 37542e9a92fSRobert Love * @sp: current sequence in the ECHO exchange 37642e9a92fSRobert Love * @fp: ECHO request frame 37742e9a92fSRobert Love * 37842e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 37942e9a92fSRobert Love * this function. 38042e9a92fSRobert Love */ 38142e9a92fSRobert Love static void fc_lport_recv_echo_req(struct fc_seq *sp, struct fc_frame *in_fp, 38242e9a92fSRobert Love struct fc_lport *lport) 38342e9a92fSRobert Love { 38442e9a92fSRobert Love struct fc_frame *fp; 38542e9a92fSRobert Love struct fc_exch *ep = fc_seq_exch(sp); 38642e9a92fSRobert Love unsigned int len; 38742e9a92fSRobert Love void *pp; 38842e9a92fSRobert Love void *dp; 38942e9a92fSRobert Love u32 f_ctl; 39042e9a92fSRobert Love 39142e9a92fSRobert Love FC_DEBUG_LPORT("Received RLIR request while in state %s\n", 39242e9a92fSRobert Love fc_lport_state(lport)); 39342e9a92fSRobert Love 39442e9a92fSRobert Love len = fr_len(in_fp) - sizeof(struct fc_frame_header); 39542e9a92fSRobert Love pp = fc_frame_payload_get(in_fp, len); 39642e9a92fSRobert Love 39742e9a92fSRobert Love if (len < sizeof(__be32)) 39842e9a92fSRobert Love len = sizeof(__be32); 39942e9a92fSRobert Love 40042e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 40142e9a92fSRobert Love if (fp) { 40242e9a92fSRobert Love dp = fc_frame_payload_get(fp, len); 40342e9a92fSRobert Love memcpy(dp, pp, len); 40442e9a92fSRobert Love *((u32 *)dp) = htonl(ELS_LS_ACC << 24); 40542e9a92fSRobert Love sp = lport->tt.seq_start_next(sp); 40642e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; 40742e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 40842e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 40942e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 41042e9a92fSRobert Love } 41142e9a92fSRobert Love fc_frame_free(in_fp); 41242e9a92fSRobert Love } 41342e9a92fSRobert Love 41442e9a92fSRobert Love /** 41542e9a92fSRobert Love * fc_lport_recv_echo_req - Handle received Request Node ID data request 41642e9a92fSRobert Love * @lport: Fibre Channel local port recieving the RNID 41742e9a92fSRobert Love * @sp: current sequence in the RNID exchange 41842e9a92fSRobert Love * @fp: RNID request frame 41942e9a92fSRobert Love * 42042e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 42142e9a92fSRobert Love * this function. 42242e9a92fSRobert Love */ 42342e9a92fSRobert Love static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp, 42442e9a92fSRobert Love struct fc_lport *lport) 42542e9a92fSRobert Love { 42642e9a92fSRobert Love struct fc_frame *fp; 42742e9a92fSRobert Love struct fc_exch *ep = fc_seq_exch(sp); 42842e9a92fSRobert Love struct fc_els_rnid *req; 42942e9a92fSRobert Love struct { 43042e9a92fSRobert Love struct fc_els_rnid_resp rnid; 43142e9a92fSRobert Love struct fc_els_rnid_cid cid; 43242e9a92fSRobert Love struct fc_els_rnid_gen gen; 43342e9a92fSRobert Love } *rp; 43442e9a92fSRobert Love struct fc_seq_els_data rjt_data; 43542e9a92fSRobert Love u8 fmt; 43642e9a92fSRobert Love size_t len; 43742e9a92fSRobert Love u32 f_ctl; 43842e9a92fSRobert Love 43942e9a92fSRobert Love FC_DEBUG_LPORT("Received RNID request while in state %s\n", 44042e9a92fSRobert Love fc_lport_state(lport)); 44142e9a92fSRobert Love 44242e9a92fSRobert Love req = fc_frame_payload_get(in_fp, sizeof(*req)); 44342e9a92fSRobert Love if (!req) { 44442e9a92fSRobert Love rjt_data.fp = NULL; 44542e9a92fSRobert Love rjt_data.reason = ELS_RJT_LOGIC; 44642e9a92fSRobert Love rjt_data.explan = ELS_EXPL_NONE; 44742e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); 44842e9a92fSRobert Love } else { 44942e9a92fSRobert Love fmt = req->rnid_fmt; 45042e9a92fSRobert Love len = sizeof(*rp); 45142e9a92fSRobert Love if (fmt != ELS_RNIDF_GEN || 45242e9a92fSRobert Love ntohl(lport->rnid_gen.rnid_atype) == 0) { 45342e9a92fSRobert Love fmt = ELS_RNIDF_NONE; /* nothing to provide */ 45442e9a92fSRobert Love len -= sizeof(rp->gen); 45542e9a92fSRobert Love } 45642e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 45742e9a92fSRobert Love if (fp) { 45842e9a92fSRobert Love rp = fc_frame_payload_get(fp, len); 45942e9a92fSRobert Love memset(rp, 0, len); 46042e9a92fSRobert Love rp->rnid.rnid_cmd = ELS_LS_ACC; 46142e9a92fSRobert Love rp->rnid.rnid_fmt = fmt; 46242e9a92fSRobert Love rp->rnid.rnid_cid_len = sizeof(rp->cid); 46342e9a92fSRobert Love rp->cid.rnid_wwpn = htonll(lport->wwpn); 46442e9a92fSRobert Love rp->cid.rnid_wwnn = htonll(lport->wwnn); 46542e9a92fSRobert Love if (fmt == ELS_RNIDF_GEN) { 46642e9a92fSRobert Love rp->rnid.rnid_sid_len = sizeof(rp->gen); 46742e9a92fSRobert Love memcpy(&rp->gen, &lport->rnid_gen, 46842e9a92fSRobert Love sizeof(rp->gen)); 46942e9a92fSRobert Love } 47042e9a92fSRobert Love sp = lport->tt.seq_start_next(sp); 47142e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; 47242e9a92fSRobert Love f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; 47342e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 47442e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 47542e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 47642e9a92fSRobert Love } 47742e9a92fSRobert Love } 47842e9a92fSRobert Love fc_frame_free(in_fp); 47942e9a92fSRobert Love } 48042e9a92fSRobert Love 48142e9a92fSRobert Love /** 48242e9a92fSRobert Love * fc_lport_recv_adisc_req - Handle received Address Discovery Request 48342e9a92fSRobert Love * @lport: Fibre Channel local port recieving the ADISC 48442e9a92fSRobert Love * @sp: current sequence in the ADISC exchange 48542e9a92fSRobert Love * @fp: ADISC request frame 48642e9a92fSRobert Love * 48742e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 48842e9a92fSRobert Love * this function. 48942e9a92fSRobert Love */ 49042e9a92fSRobert Love static void fc_lport_recv_adisc_req(struct fc_seq *sp, struct fc_frame *in_fp, 49142e9a92fSRobert Love struct fc_lport *lport) 49242e9a92fSRobert Love { 49342e9a92fSRobert Love struct fc_frame *fp; 49442e9a92fSRobert Love struct fc_exch *ep = fc_seq_exch(sp); 49542e9a92fSRobert Love struct fc_els_adisc *req, *rp; 49642e9a92fSRobert Love struct fc_seq_els_data rjt_data; 49742e9a92fSRobert Love size_t len; 49842e9a92fSRobert Love u32 f_ctl; 49942e9a92fSRobert Love 50042e9a92fSRobert Love FC_DEBUG_LPORT("Received ADISC request while in state %s\n", 50142e9a92fSRobert Love fc_lport_state(lport)); 50242e9a92fSRobert Love 50342e9a92fSRobert Love req = fc_frame_payload_get(in_fp, sizeof(*req)); 50442e9a92fSRobert Love if (!req) { 50542e9a92fSRobert Love rjt_data.fp = NULL; 50642e9a92fSRobert Love rjt_data.reason = ELS_RJT_LOGIC; 50742e9a92fSRobert Love rjt_data.explan = ELS_EXPL_NONE; 50842e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); 50942e9a92fSRobert Love } else { 51042e9a92fSRobert Love len = sizeof(*rp); 51142e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 51242e9a92fSRobert Love if (fp) { 51342e9a92fSRobert Love rp = fc_frame_payload_get(fp, len); 51442e9a92fSRobert Love memset(rp, 0, len); 51542e9a92fSRobert Love rp->adisc_cmd = ELS_LS_ACC; 51642e9a92fSRobert Love rp->adisc_wwpn = htonll(lport->wwpn); 51742e9a92fSRobert Love rp->adisc_wwnn = htonll(lport->wwnn); 51842e9a92fSRobert Love hton24(rp->adisc_port_id, 51942e9a92fSRobert Love fc_host_port_id(lport->host)); 52042e9a92fSRobert Love sp = lport->tt.seq_start_next(sp); 52142e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; 52242e9a92fSRobert Love f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; 52342e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 52442e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 52542e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 52642e9a92fSRobert Love } 52742e9a92fSRobert Love } 52842e9a92fSRobert Love fc_frame_free(in_fp); 52942e9a92fSRobert Love } 53042e9a92fSRobert Love 53142e9a92fSRobert Love /** 53242e9a92fSRobert Love * fc_lport_recv_logo_req - Handle received fabric LOGO request 53342e9a92fSRobert Love * @lport: Fibre Channel local port recieving the LOGO 53442e9a92fSRobert Love * @sp: current sequence in the LOGO exchange 53542e9a92fSRobert Love * @fp: LOGO request frame 53642e9a92fSRobert Love * 53742e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 53842e9a92fSRobert Love * this function. 53942e9a92fSRobert Love */ 54042e9a92fSRobert Love static void fc_lport_recv_logo_req(struct fc_seq *sp, struct fc_frame *fp, 54142e9a92fSRobert Love struct fc_lport *lport) 54242e9a92fSRobert Love { 54342e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); 54442e9a92fSRobert Love fc_lport_enter_reset(lport); 54542e9a92fSRobert Love fc_frame_free(fp); 54642e9a92fSRobert Love } 54742e9a92fSRobert Love 54842e9a92fSRobert Love /** 54942e9a92fSRobert Love * fc_fabric_login - Start the lport state machine 55042e9a92fSRobert Love * @lport: The lport that should log into the fabric 55142e9a92fSRobert Love * 55242e9a92fSRobert Love * Locking Note: This function should not be called 55342e9a92fSRobert Love * with the lport lock held. 55442e9a92fSRobert Love */ 55542e9a92fSRobert Love int fc_fabric_login(struct fc_lport *lport) 55642e9a92fSRobert Love { 55742e9a92fSRobert Love int rc = -1; 55842e9a92fSRobert Love 55942e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 56042e9a92fSRobert Love if (lport->state == LPORT_ST_NONE) { 56142e9a92fSRobert Love fc_lport_enter_reset(lport); 56242e9a92fSRobert Love rc = 0; 56342e9a92fSRobert Love } 56442e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 56542e9a92fSRobert Love 56642e9a92fSRobert Love return rc; 56742e9a92fSRobert Love } 56842e9a92fSRobert Love EXPORT_SYMBOL(fc_fabric_login); 56942e9a92fSRobert Love 57042e9a92fSRobert Love /** 57142e9a92fSRobert Love * fc_linkup - Handler for transport linkup events 57242e9a92fSRobert Love * @lport: The lport whose link is up 57342e9a92fSRobert Love */ 57442e9a92fSRobert Love void fc_linkup(struct fc_lport *lport) 57542e9a92fSRobert Love { 57642e9a92fSRobert Love FC_DEBUG_LPORT("Link is up for port (%6x)\n", 57742e9a92fSRobert Love fc_host_port_id(lport->host)); 57842e9a92fSRobert Love 57942e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 58042e9a92fSRobert Love if ((lport->link_status & FC_LINK_UP) != FC_LINK_UP) { 58142e9a92fSRobert Love lport->link_status |= FC_LINK_UP; 58242e9a92fSRobert Love 58342e9a92fSRobert Love if (lport->state == LPORT_ST_RESET) 58442e9a92fSRobert Love fc_lport_enter_flogi(lport); 58542e9a92fSRobert Love } 58642e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 58742e9a92fSRobert Love } 58842e9a92fSRobert Love EXPORT_SYMBOL(fc_linkup); 58942e9a92fSRobert Love 59042e9a92fSRobert Love /** 59142e9a92fSRobert Love * fc_linkdown - Handler for transport linkdown events 59242e9a92fSRobert Love * @lport: The lport whose link is down 59342e9a92fSRobert Love */ 59442e9a92fSRobert Love void fc_linkdown(struct fc_lport *lport) 59542e9a92fSRobert Love { 59642e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 59742e9a92fSRobert Love FC_DEBUG_LPORT("Link is down for port (%6x)\n", 59842e9a92fSRobert Love fc_host_port_id(lport->host)); 59942e9a92fSRobert Love 60042e9a92fSRobert Love if ((lport->link_status & FC_LINK_UP) == FC_LINK_UP) { 60142e9a92fSRobert Love lport->link_status &= ~(FC_LINK_UP); 60242e9a92fSRobert Love fc_lport_enter_reset(lport); 60342e9a92fSRobert Love lport->tt.fcp_cleanup(lport); 60442e9a92fSRobert Love } 60542e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 60642e9a92fSRobert Love } 60742e9a92fSRobert Love EXPORT_SYMBOL(fc_linkdown); 60842e9a92fSRobert Love 60942e9a92fSRobert Love /** 61042e9a92fSRobert Love * fc_pause - Pause the flow of frames 61142e9a92fSRobert Love * @lport: The lport to be paused 61242e9a92fSRobert Love */ 61342e9a92fSRobert Love void fc_pause(struct fc_lport *lport) 61442e9a92fSRobert Love { 61542e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 61642e9a92fSRobert Love lport->link_status |= FC_PAUSE; 61742e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 61842e9a92fSRobert Love } 61942e9a92fSRobert Love EXPORT_SYMBOL(fc_pause); 62042e9a92fSRobert Love 62142e9a92fSRobert Love /** 62242e9a92fSRobert Love * fc_unpause - Unpause the flow of frames 62342e9a92fSRobert Love * @lport: The lport to be unpaused 62442e9a92fSRobert Love */ 62542e9a92fSRobert Love void fc_unpause(struct fc_lport *lport) 62642e9a92fSRobert Love { 62742e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 62842e9a92fSRobert Love lport->link_status &= ~(FC_PAUSE); 62942e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 63042e9a92fSRobert Love } 63142e9a92fSRobert Love EXPORT_SYMBOL(fc_unpause); 63242e9a92fSRobert Love 63342e9a92fSRobert Love /** 63442e9a92fSRobert Love * fc_fabric_logoff - Logout of the fabric 63542e9a92fSRobert Love * @lport: fc_lport pointer to logoff the fabric 63642e9a92fSRobert Love * 63742e9a92fSRobert Love * Return value: 63842e9a92fSRobert Love * 0 for success, -1 for failure 63942e9a92fSRobert Love **/ 64042e9a92fSRobert Love int fc_fabric_logoff(struct fc_lport *lport) 64142e9a92fSRobert Love { 64242e9a92fSRobert Love lport->tt.disc_stop_final(lport); 64342e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 64442e9a92fSRobert Love fc_lport_enter_logo(lport); 64542e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 64642e9a92fSRobert Love return 0; 64742e9a92fSRobert Love } 64842e9a92fSRobert Love EXPORT_SYMBOL(fc_fabric_logoff); 64942e9a92fSRobert Love 65042e9a92fSRobert Love /** 65142e9a92fSRobert Love * fc_lport_destroy - unregister a fc_lport 65242e9a92fSRobert Love * @lport: fc_lport pointer to unregister 65342e9a92fSRobert Love * 65442e9a92fSRobert Love * Return value: 65542e9a92fSRobert Love * None 65642e9a92fSRobert Love * Note: 65742e9a92fSRobert Love * exit routine for fc_lport instance 65842e9a92fSRobert Love * clean-up all the allocated memory 65942e9a92fSRobert Love * and free up other system resources. 66042e9a92fSRobert Love * 66142e9a92fSRobert Love **/ 66242e9a92fSRobert Love int fc_lport_destroy(struct fc_lport *lport) 66342e9a92fSRobert Love { 66442e9a92fSRobert Love lport->tt.frame_send = fc_frame_drop; 66542e9a92fSRobert Love lport->tt.fcp_abort_io(lport); 66642e9a92fSRobert Love lport->tt.exch_mgr_reset(lport->emp, 0, 0); 66742e9a92fSRobert Love return 0; 66842e9a92fSRobert Love } 66942e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_destroy); 67042e9a92fSRobert Love 67142e9a92fSRobert Love /** 67242e9a92fSRobert Love * fc_set_mfs - sets up the mfs for the corresponding fc_lport 67342e9a92fSRobert Love * @lport: fc_lport pointer to unregister 67442e9a92fSRobert Love * @mfs: the new mfs for fc_lport 67542e9a92fSRobert Love * 67642e9a92fSRobert Love * Set mfs for the given fc_lport to the new mfs. 67742e9a92fSRobert Love * 67842e9a92fSRobert Love * Return: 0 for success 67942e9a92fSRobert Love * 68042e9a92fSRobert Love **/ 68142e9a92fSRobert Love int fc_set_mfs(struct fc_lport *lport, u32 mfs) 68242e9a92fSRobert Love { 68342e9a92fSRobert Love unsigned int old_mfs; 68442e9a92fSRobert Love int rc = -EINVAL; 68542e9a92fSRobert Love 68642e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 68742e9a92fSRobert Love 68842e9a92fSRobert Love old_mfs = lport->mfs; 68942e9a92fSRobert Love 69042e9a92fSRobert Love if (mfs >= FC_MIN_MAX_FRAME) { 69142e9a92fSRobert Love mfs &= ~3; 69242e9a92fSRobert Love if (mfs > FC_MAX_FRAME) 69342e9a92fSRobert Love mfs = FC_MAX_FRAME; 69442e9a92fSRobert Love mfs -= sizeof(struct fc_frame_header); 69542e9a92fSRobert Love lport->mfs = mfs; 69642e9a92fSRobert Love rc = 0; 69742e9a92fSRobert Love } 69842e9a92fSRobert Love 69942e9a92fSRobert Love if (!rc && mfs < old_mfs) 70042e9a92fSRobert Love fc_lport_enter_reset(lport); 70142e9a92fSRobert Love 70242e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 70342e9a92fSRobert Love 70442e9a92fSRobert Love return rc; 70542e9a92fSRobert Love } 70642e9a92fSRobert Love EXPORT_SYMBOL(fc_set_mfs); 70742e9a92fSRobert Love 70842e9a92fSRobert Love /** 70942e9a92fSRobert Love * fc_lport_disc_callback - Callback for discovery events 71042e9a92fSRobert Love * @lport: FC local port 71142e9a92fSRobert Love * @event: The discovery event 71242e9a92fSRobert Love */ 71342e9a92fSRobert Love void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event) 71442e9a92fSRobert Love { 71542e9a92fSRobert Love switch (event) { 71642e9a92fSRobert Love case DISC_EV_SUCCESS: 71742e9a92fSRobert Love FC_DEBUG_LPORT("Got a SUCCESS event for port (%6x)\n", 71842e9a92fSRobert Love fc_host_port_id(lport->host)); 71942e9a92fSRobert Love break; 72042e9a92fSRobert Love case DISC_EV_FAILED: 72142e9a92fSRobert Love FC_DEBUG_LPORT("Got a FAILED event for port (%6x)\n", 72242e9a92fSRobert Love fc_host_port_id(lport->host)); 72342e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 72442e9a92fSRobert Love fc_lport_enter_reset(lport); 72542e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 72642e9a92fSRobert Love break; 72742e9a92fSRobert Love case DISC_EV_NONE: 72842e9a92fSRobert Love WARN_ON(1); 72942e9a92fSRobert Love break; 73042e9a92fSRobert Love } 73142e9a92fSRobert Love } 73242e9a92fSRobert Love 73342e9a92fSRobert Love /** 73442e9a92fSRobert Love * fc_rport_enter_ready - Enter the ready state and start discovery 73542e9a92fSRobert Love * @lport: Fibre Channel local port that is ready 73642e9a92fSRobert Love * 73742e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 73842e9a92fSRobert Love * this routine. 73942e9a92fSRobert Love */ 74042e9a92fSRobert Love static void fc_lport_enter_ready(struct fc_lport *lport) 74142e9a92fSRobert Love { 74242e9a92fSRobert Love FC_DEBUG_LPORT("Port (%6x) entered Ready from state %s\n", 74342e9a92fSRobert Love fc_host_port_id(lport->host), fc_lport_state(lport)); 74442e9a92fSRobert Love 74542e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_READY); 74642e9a92fSRobert Love 74742e9a92fSRobert Love lport->tt.disc_start(fc_lport_disc_callback, lport); 74842e9a92fSRobert Love } 74942e9a92fSRobert Love 75042e9a92fSRobert Love /** 75142e9a92fSRobert Love * fc_lport_recv_flogi_req - Receive a FLOGI request 75242e9a92fSRobert Love * @sp_in: The sequence the FLOGI is on 75342e9a92fSRobert Love * @rx_fp: The frame the FLOGI is in 75442e9a92fSRobert Love * @lport: The lport that recieved the request 75542e9a92fSRobert Love * 75642e9a92fSRobert Love * A received FLOGI request indicates a point-to-point connection. 75742e9a92fSRobert Love * Accept it with the common service parameters indicating our N port. 75842e9a92fSRobert Love * Set up to do a PLOGI if we have the higher-number WWPN. 75942e9a92fSRobert Love * 76042e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 76142e9a92fSRobert Love * this function. 76242e9a92fSRobert Love */ 76342e9a92fSRobert Love static void fc_lport_recv_flogi_req(struct fc_seq *sp_in, 76442e9a92fSRobert Love struct fc_frame *rx_fp, 76542e9a92fSRobert Love struct fc_lport *lport) 76642e9a92fSRobert Love { 76742e9a92fSRobert Love struct fc_frame *fp; 76842e9a92fSRobert Love struct fc_frame_header *fh; 76942e9a92fSRobert Love struct fc_seq *sp; 77042e9a92fSRobert Love struct fc_exch *ep; 77142e9a92fSRobert Love struct fc_els_flogi *flp; 77242e9a92fSRobert Love struct fc_els_flogi *new_flp; 77342e9a92fSRobert Love u64 remote_wwpn; 77442e9a92fSRobert Love u32 remote_fid; 77542e9a92fSRobert Love u32 local_fid; 77642e9a92fSRobert Love u32 f_ctl; 77742e9a92fSRobert Love 77842e9a92fSRobert Love FC_DEBUG_LPORT("Received FLOGI request while in state %s\n", 77942e9a92fSRobert Love fc_lport_state(lport)); 78042e9a92fSRobert Love 78142e9a92fSRobert Love fh = fc_frame_header_get(rx_fp); 78242e9a92fSRobert Love remote_fid = ntoh24(fh->fh_s_id); 78342e9a92fSRobert Love flp = fc_frame_payload_get(rx_fp, sizeof(*flp)); 78442e9a92fSRobert Love if (!flp) 78542e9a92fSRobert Love goto out; 78642e9a92fSRobert Love remote_wwpn = get_unaligned_be64(&flp->fl_wwpn); 78742e9a92fSRobert Love if (remote_wwpn == lport->wwpn) { 78842e9a92fSRobert Love FC_DBG("FLOGI from port with same WWPN %llx " 78942e9a92fSRobert Love "possible configuration error\n", remote_wwpn); 79042e9a92fSRobert Love goto out; 79142e9a92fSRobert Love } 79242e9a92fSRobert Love FC_DBG("FLOGI from port WWPN %llx\n", remote_wwpn); 79342e9a92fSRobert Love 79442e9a92fSRobert Love /* 79542e9a92fSRobert Love * XXX what is the right thing to do for FIDs? 79642e9a92fSRobert Love * The originator might expect our S_ID to be 0xfffffe. 79742e9a92fSRobert Love * But if so, both of us could end up with the same FID. 79842e9a92fSRobert Love */ 79942e9a92fSRobert Love local_fid = FC_LOCAL_PTP_FID_LO; 80042e9a92fSRobert Love if (remote_wwpn < lport->wwpn) { 80142e9a92fSRobert Love local_fid = FC_LOCAL_PTP_FID_HI; 80242e9a92fSRobert Love if (!remote_fid || remote_fid == local_fid) 80342e9a92fSRobert Love remote_fid = FC_LOCAL_PTP_FID_LO; 80442e9a92fSRobert Love } else if (!remote_fid) { 80542e9a92fSRobert Love remote_fid = FC_LOCAL_PTP_FID_HI; 80642e9a92fSRobert Love } 80742e9a92fSRobert Love 80842e9a92fSRobert Love fc_host_port_id(lport->host) = local_fid; 80942e9a92fSRobert Love 81042e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(*flp)); 81142e9a92fSRobert Love if (fp) { 81242e9a92fSRobert Love sp = lport->tt.seq_start_next(fr_seq(rx_fp)); 81342e9a92fSRobert Love new_flp = fc_frame_payload_get(fp, sizeof(*flp)); 81442e9a92fSRobert Love fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI); 81542e9a92fSRobert Love new_flp->fl_cmd = (u8) ELS_LS_ACC; 81642e9a92fSRobert Love 81742e9a92fSRobert Love /* 81842e9a92fSRobert Love * Send the response. If this fails, the originator should 81942e9a92fSRobert Love * repeat the sequence. 82042e9a92fSRobert Love */ 82142e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; 82242e9a92fSRobert Love ep = fc_seq_exch(sp); 82342e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 82442e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 82542e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 82642e9a92fSRobert Love 82742e9a92fSRobert Love } else { 82842e9a92fSRobert Love fc_lport_error(lport, fp); 82942e9a92fSRobert Love } 83042e9a92fSRobert Love fc_lport_ptp_setup(lport, remote_fid, remote_wwpn, 83142e9a92fSRobert Love get_unaligned_be64(&flp->fl_wwnn)); 83242e9a92fSRobert Love 83342e9a92fSRobert Love lport->tt.disc_start(fc_lport_disc_callback, lport); 83442e9a92fSRobert Love 83542e9a92fSRobert Love out: 83642e9a92fSRobert Love sp = fr_seq(rx_fp); 83742e9a92fSRobert Love fc_frame_free(rx_fp); 83842e9a92fSRobert Love } 83942e9a92fSRobert Love 84042e9a92fSRobert Love /** 84142e9a92fSRobert Love * fc_lport_recv_req - The generic lport request handler 84242e9a92fSRobert Love * @lport: The lport that received the request 84342e9a92fSRobert Love * @sp: The sequence the request is on 84442e9a92fSRobert Love * @fp: The frame the request is in 84542e9a92fSRobert Love * 84642e9a92fSRobert Love * This function will see if the lport handles the request or 84742e9a92fSRobert Love * if an rport should handle the request. 84842e9a92fSRobert Love * 84942e9a92fSRobert Love * Locking Note: This function should not be called with the lport 85042e9a92fSRobert Love * lock held becuase it will grab the lock. 85142e9a92fSRobert Love */ 85242e9a92fSRobert Love static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp, 85342e9a92fSRobert Love struct fc_frame *fp) 85442e9a92fSRobert Love { 85542e9a92fSRobert Love struct fc_frame_header *fh = fc_frame_header_get(fp); 85642e9a92fSRobert Love void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *); 85742e9a92fSRobert Love struct fc_rport *rport; 85842e9a92fSRobert Love u32 s_id; 85942e9a92fSRobert Love u32 d_id; 86042e9a92fSRobert Love struct fc_seq_els_data rjt_data; 86142e9a92fSRobert Love 86242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 86342e9a92fSRobert Love 86442e9a92fSRobert Love /* 86542e9a92fSRobert Love * Handle special ELS cases like FLOGI, LOGO, and 86642e9a92fSRobert Love * RSCN here. These don't require a session. 86742e9a92fSRobert Love * Even if we had a session, it might not be ready. 86842e9a92fSRobert Love */ 86942e9a92fSRobert Love if (fh->fh_type == FC_TYPE_ELS && fh->fh_r_ctl == FC_RCTL_ELS_REQ) { 87042e9a92fSRobert Love /* 87142e9a92fSRobert Love * Check opcode. 87242e9a92fSRobert Love */ 87342e9a92fSRobert Love recv = NULL; 87442e9a92fSRobert Love switch (fc_frame_payload_op(fp)) { 87542e9a92fSRobert Love case ELS_FLOGI: 87642e9a92fSRobert Love recv = fc_lport_recv_flogi_req; 87742e9a92fSRobert Love break; 87842e9a92fSRobert Love case ELS_LOGO: 87942e9a92fSRobert Love fh = fc_frame_header_get(fp); 88042e9a92fSRobert Love if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) 88142e9a92fSRobert Love recv = fc_lport_recv_logo_req; 88242e9a92fSRobert Love break; 88342e9a92fSRobert Love case ELS_RSCN: 88442e9a92fSRobert Love recv = lport->tt.disc_recv_req; 88542e9a92fSRobert Love break; 88642e9a92fSRobert Love case ELS_ECHO: 88742e9a92fSRobert Love recv = fc_lport_recv_echo_req; 88842e9a92fSRobert Love break; 88942e9a92fSRobert Love case ELS_RLIR: 89042e9a92fSRobert Love recv = fc_lport_recv_rlir_req; 89142e9a92fSRobert Love break; 89242e9a92fSRobert Love case ELS_RNID: 89342e9a92fSRobert Love recv = fc_lport_recv_rnid_req; 89442e9a92fSRobert Love break; 89542e9a92fSRobert Love case ELS_ADISC: 89642e9a92fSRobert Love recv = fc_lport_recv_adisc_req; 89742e9a92fSRobert Love break; 89842e9a92fSRobert Love } 89942e9a92fSRobert Love 90042e9a92fSRobert Love if (recv) 90142e9a92fSRobert Love recv(sp, fp, lport); 90242e9a92fSRobert Love else { 90342e9a92fSRobert Love /* 90442e9a92fSRobert Love * Find session. 90542e9a92fSRobert Love * If this is a new incoming PLOGI, we won't find it. 90642e9a92fSRobert Love */ 90742e9a92fSRobert Love s_id = ntoh24(fh->fh_s_id); 90842e9a92fSRobert Love d_id = ntoh24(fh->fh_d_id); 90942e9a92fSRobert Love 91042e9a92fSRobert Love rport = lport->tt.rport_lookup(lport, s_id); 91142e9a92fSRobert Love if (rport) 91242e9a92fSRobert Love lport->tt.rport_recv_req(sp, fp, rport); 91342e9a92fSRobert Love else { 91442e9a92fSRobert Love rjt_data.fp = NULL; 91542e9a92fSRobert Love rjt_data.reason = ELS_RJT_UNAB; 91642e9a92fSRobert Love rjt_data.explan = ELS_EXPL_NONE; 91742e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, 91842e9a92fSRobert Love ELS_LS_RJT, 91942e9a92fSRobert Love &rjt_data); 92042e9a92fSRobert Love fc_frame_free(fp); 92142e9a92fSRobert Love } 92242e9a92fSRobert Love } 92342e9a92fSRobert Love } else { 92442e9a92fSRobert Love FC_DBG("dropping invalid frame (eof %x)\n", fr_eof(fp)); 92542e9a92fSRobert Love fc_frame_free(fp); 92642e9a92fSRobert Love } 92742e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 92842e9a92fSRobert Love 92942e9a92fSRobert Love /* 93042e9a92fSRobert Love * The common exch_done for all request may not be good 93142e9a92fSRobert Love * if any request requires longer hold on exhange. XXX 93242e9a92fSRobert Love */ 93342e9a92fSRobert Love lport->tt.exch_done(sp); 93442e9a92fSRobert Love } 93542e9a92fSRobert Love 93642e9a92fSRobert Love /** 93742e9a92fSRobert Love * fc_lport_reset - Reset an lport 93842e9a92fSRobert Love * @lport: The lport which should be reset 93942e9a92fSRobert Love * 94042e9a92fSRobert Love * Locking Note: This functions should not be called with the 94142e9a92fSRobert Love * lport lock held. 94242e9a92fSRobert Love */ 94342e9a92fSRobert Love int fc_lport_reset(struct fc_lport *lport) 94442e9a92fSRobert Love { 94542e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 94642e9a92fSRobert Love fc_lport_enter_reset(lport); 94742e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 94842e9a92fSRobert Love return 0; 94942e9a92fSRobert Love } 95042e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_reset); 95142e9a92fSRobert Love 95242e9a92fSRobert Love /** 95342e9a92fSRobert Love * fc_rport_enter_reset - Reset the local port 95442e9a92fSRobert Love * @lport: Fibre Channel local port to be reset 95542e9a92fSRobert Love * 95642e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 95742e9a92fSRobert Love * this routine. 95842e9a92fSRobert Love */ 95942e9a92fSRobert Love static void fc_lport_enter_reset(struct fc_lport *lport) 96042e9a92fSRobert Love { 96142e9a92fSRobert Love FC_DEBUG_LPORT("Port (%6x) entered RESET state from %s state\n", 96242e9a92fSRobert Love fc_host_port_id(lport->host), fc_lport_state(lport)); 96342e9a92fSRobert Love 96442e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_RESET); 96542e9a92fSRobert Love 96642e9a92fSRobert Love if (lport->dns_rp) 96742e9a92fSRobert Love lport->tt.rport_logoff(lport->dns_rp); 96842e9a92fSRobert Love 96942e9a92fSRobert Love if (lport->ptp_rp) { 97042e9a92fSRobert Love lport->tt.rport_logoff(lport->ptp_rp); 97142e9a92fSRobert Love lport->ptp_rp = NULL; 97242e9a92fSRobert Love } 97342e9a92fSRobert Love 97442e9a92fSRobert Love lport->tt.disc_stop(lport); 97542e9a92fSRobert Love 97642e9a92fSRobert Love lport->tt.exch_mgr_reset(lport->emp, 0, 0); 97742e9a92fSRobert Love fc_host_fabric_name(lport->host) = 0; 97842e9a92fSRobert Love fc_host_port_id(lport->host) = 0; 97942e9a92fSRobert Love 98042e9a92fSRobert Love if ((lport->link_status & FC_LINK_UP) == FC_LINK_UP) 98142e9a92fSRobert Love fc_lport_enter_flogi(lport); 98242e9a92fSRobert Love } 98342e9a92fSRobert Love 98442e9a92fSRobert Love /** 98542e9a92fSRobert Love * fc_lport_error - Handler for any errors 98642e9a92fSRobert Love * @lport: The fc_lport object 98742e9a92fSRobert Love * @fp: The frame pointer 98842e9a92fSRobert Love * 98942e9a92fSRobert Love * If the error was caused by a resource allocation failure 99042e9a92fSRobert Love * then wait for half a second and retry, otherwise retry 99142e9a92fSRobert Love * after the e_d_tov time. 99242e9a92fSRobert Love */ 99342e9a92fSRobert Love static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp) 99442e9a92fSRobert Love { 99542e9a92fSRobert Love unsigned long delay = 0; 99642e9a92fSRobert Love FC_DEBUG_LPORT("Error %ld in state %s, retries %d\n", 99742e9a92fSRobert Love PTR_ERR(fp), fc_lport_state(lport), 99842e9a92fSRobert Love lport->retry_count); 99942e9a92fSRobert Love 100042e9a92fSRobert Love if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) { 100142e9a92fSRobert Love /* 100242e9a92fSRobert Love * Memory allocation failure, or the exchange timed out. 100342e9a92fSRobert Love * Retry after delay 100442e9a92fSRobert Love */ 100542e9a92fSRobert Love if (lport->retry_count < lport->max_retry_count) { 100642e9a92fSRobert Love lport->retry_count++; 100742e9a92fSRobert Love if (!fp) 100842e9a92fSRobert Love delay = msecs_to_jiffies(500); 100942e9a92fSRobert Love else 101042e9a92fSRobert Love delay = msecs_to_jiffies(lport->e_d_tov); 101142e9a92fSRobert Love 101242e9a92fSRobert Love schedule_delayed_work(&lport->retry_work, delay); 101342e9a92fSRobert Love } else { 101442e9a92fSRobert Love switch (lport->state) { 101542e9a92fSRobert Love case LPORT_ST_NONE: 101642e9a92fSRobert Love case LPORT_ST_READY: 101742e9a92fSRobert Love case LPORT_ST_RESET: 101842e9a92fSRobert Love case LPORT_ST_RPN_ID: 101942e9a92fSRobert Love case LPORT_ST_RFT_ID: 102042e9a92fSRobert Love case LPORT_ST_SCR: 102142e9a92fSRobert Love case LPORT_ST_DNS: 102242e9a92fSRobert Love case LPORT_ST_FLOGI: 102342e9a92fSRobert Love case LPORT_ST_LOGO: 102442e9a92fSRobert Love fc_lport_enter_reset(lport); 102542e9a92fSRobert Love break; 102642e9a92fSRobert Love } 102742e9a92fSRobert Love } 102842e9a92fSRobert Love } 102942e9a92fSRobert Love } 103042e9a92fSRobert Love 103142e9a92fSRobert Love /** 103242e9a92fSRobert Love * fc_lport_rft_id_resp - Handle response to Register Fibre 103342e9a92fSRobert Love * Channel Types by ID (RPN_ID) request 103442e9a92fSRobert Love * @sp: current sequence in RPN_ID exchange 103542e9a92fSRobert Love * @fp: response frame 103642e9a92fSRobert Love * @lp_arg: Fibre Channel host port instance 103742e9a92fSRobert Love * 103842e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 103942e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 104042e9a92fSRobert Love * and then unlock the lport. 104142e9a92fSRobert Love */ 104242e9a92fSRobert Love static void fc_lport_rft_id_resp(struct fc_seq *sp, struct fc_frame *fp, 104342e9a92fSRobert Love void *lp_arg) 104442e9a92fSRobert Love { 104542e9a92fSRobert Love struct fc_lport *lport = lp_arg; 104642e9a92fSRobert Love struct fc_frame_header *fh; 104742e9a92fSRobert Love struct fc_ct_hdr *ct; 104842e9a92fSRobert Love 104942e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 105042e9a92fSRobert Love return; 105142e9a92fSRobert Love 105242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 105342e9a92fSRobert Love 105442e9a92fSRobert Love FC_DEBUG_LPORT("Received a RFT_ID response\n"); 105542e9a92fSRobert Love 105642e9a92fSRobert Love if (lport->state != LPORT_ST_RFT_ID) { 105742e9a92fSRobert Love FC_DBG("Received a RFT_ID response, but in state %s\n", 105842e9a92fSRobert Love fc_lport_state(lport)); 105942e9a92fSRobert Love goto out; 106042e9a92fSRobert Love } 106142e9a92fSRobert Love 106242e9a92fSRobert Love if (IS_ERR(fp)) { 106342e9a92fSRobert Love fc_lport_error(lport, fp); 106442e9a92fSRobert Love goto err; 106542e9a92fSRobert Love } 106642e9a92fSRobert Love 106742e9a92fSRobert Love fh = fc_frame_header_get(fp); 106842e9a92fSRobert Love ct = fc_frame_payload_get(fp, sizeof(*ct)); 106942e9a92fSRobert Love 107042e9a92fSRobert Love if (fh && ct && fh->fh_type == FC_TYPE_CT && 107142e9a92fSRobert Love ct->ct_fs_type == FC_FST_DIR && 107242e9a92fSRobert Love ct->ct_fs_subtype == FC_NS_SUBTYPE && 107342e9a92fSRobert Love ntohs(ct->ct_cmd) == FC_FS_ACC) 107442e9a92fSRobert Love fc_lport_enter_scr(lport); 107542e9a92fSRobert Love else 107642e9a92fSRobert Love fc_lport_error(lport, fp); 107742e9a92fSRobert Love out: 107842e9a92fSRobert Love fc_frame_free(fp); 107942e9a92fSRobert Love err: 108042e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 108142e9a92fSRobert Love } 108242e9a92fSRobert Love 108342e9a92fSRobert Love /** 108442e9a92fSRobert Love * fc_lport_rpn_id_resp - Handle response to Register Port 108542e9a92fSRobert Love * Name by ID (RPN_ID) request 108642e9a92fSRobert Love * @sp: current sequence in RPN_ID exchange 108742e9a92fSRobert Love * @fp: response frame 108842e9a92fSRobert Love * @lp_arg: Fibre Channel host port instance 108942e9a92fSRobert Love * 109042e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 109142e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 109242e9a92fSRobert Love * and then unlock the lport. 109342e9a92fSRobert Love */ 109442e9a92fSRobert Love static void fc_lport_rpn_id_resp(struct fc_seq *sp, struct fc_frame *fp, 109542e9a92fSRobert Love void *lp_arg) 109642e9a92fSRobert Love { 109742e9a92fSRobert Love struct fc_lport *lport = lp_arg; 109842e9a92fSRobert Love struct fc_frame_header *fh; 109942e9a92fSRobert Love struct fc_ct_hdr *ct; 110042e9a92fSRobert Love 110142e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 110242e9a92fSRobert Love return; 110342e9a92fSRobert Love 110442e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 110542e9a92fSRobert Love 110642e9a92fSRobert Love FC_DEBUG_LPORT("Received a RPN_ID response\n"); 110742e9a92fSRobert Love 110842e9a92fSRobert Love if (lport->state != LPORT_ST_RPN_ID) { 110942e9a92fSRobert Love FC_DBG("Received a RPN_ID response, but in state %s\n", 111042e9a92fSRobert Love fc_lport_state(lport)); 111142e9a92fSRobert Love goto out; 111242e9a92fSRobert Love } 111342e9a92fSRobert Love 111442e9a92fSRobert Love if (IS_ERR(fp)) { 111542e9a92fSRobert Love fc_lport_error(lport, fp); 111642e9a92fSRobert Love goto err; 111742e9a92fSRobert Love } 111842e9a92fSRobert Love 111942e9a92fSRobert Love fh = fc_frame_header_get(fp); 112042e9a92fSRobert Love ct = fc_frame_payload_get(fp, sizeof(*ct)); 112142e9a92fSRobert Love if (fh && ct && fh->fh_type == FC_TYPE_CT && 112242e9a92fSRobert Love ct->ct_fs_type == FC_FST_DIR && 112342e9a92fSRobert Love ct->ct_fs_subtype == FC_NS_SUBTYPE && 112442e9a92fSRobert Love ntohs(ct->ct_cmd) == FC_FS_ACC) 112542e9a92fSRobert Love fc_lport_enter_rft_id(lport); 112642e9a92fSRobert Love else 112742e9a92fSRobert Love fc_lport_error(lport, fp); 112842e9a92fSRobert Love 112942e9a92fSRobert Love out: 113042e9a92fSRobert Love fc_frame_free(fp); 113142e9a92fSRobert Love err: 113242e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 113342e9a92fSRobert Love } 113442e9a92fSRobert Love 113542e9a92fSRobert Love /** 113642e9a92fSRobert Love * fc_lport_scr_resp - Handle response to State Change Register (SCR) request 113742e9a92fSRobert Love * @sp: current sequence in SCR exchange 113842e9a92fSRobert Love * @fp: response frame 113942e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the registration request 114042e9a92fSRobert Love * 114142e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 114242e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 114342e9a92fSRobert Love * and then unlock the lport. 114442e9a92fSRobert Love */ 114542e9a92fSRobert Love static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp, 114642e9a92fSRobert Love void *lp_arg) 114742e9a92fSRobert Love { 114842e9a92fSRobert Love struct fc_lport *lport = lp_arg; 114942e9a92fSRobert Love u8 op; 115042e9a92fSRobert Love 115142e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 115242e9a92fSRobert Love return; 115342e9a92fSRobert Love 115442e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 115542e9a92fSRobert Love 115642e9a92fSRobert Love FC_DEBUG_LPORT("Received a SCR response\n"); 115742e9a92fSRobert Love 115842e9a92fSRobert Love if (lport->state != LPORT_ST_SCR) { 115942e9a92fSRobert Love FC_DBG("Received a SCR response, but in state %s\n", 116042e9a92fSRobert Love fc_lport_state(lport)); 116142e9a92fSRobert Love goto out; 116242e9a92fSRobert Love } 116342e9a92fSRobert Love 116442e9a92fSRobert Love if (IS_ERR(fp)) { 116542e9a92fSRobert Love fc_lport_error(lport, fp); 116642e9a92fSRobert Love goto err; 116742e9a92fSRobert Love } 116842e9a92fSRobert Love 116942e9a92fSRobert Love op = fc_frame_payload_op(fp); 117042e9a92fSRobert Love if (op == ELS_LS_ACC) 117142e9a92fSRobert Love fc_lport_enter_ready(lport); 117242e9a92fSRobert Love else 117342e9a92fSRobert Love fc_lport_error(lport, fp); 117442e9a92fSRobert Love 117542e9a92fSRobert Love out: 117642e9a92fSRobert Love fc_frame_free(fp); 117742e9a92fSRobert Love err: 117842e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 117942e9a92fSRobert Love } 118042e9a92fSRobert Love 118142e9a92fSRobert Love /** 118242e9a92fSRobert Love * fc_lport_enter_scr - Send a State Change Register (SCR) request 118342e9a92fSRobert Love * @lport: Fibre Channel local port to register for state changes 118442e9a92fSRobert Love * 118542e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 118642e9a92fSRobert Love * this routine. 118742e9a92fSRobert Love */ 118842e9a92fSRobert Love static void fc_lport_enter_scr(struct fc_lport *lport) 118942e9a92fSRobert Love { 119042e9a92fSRobert Love struct fc_frame *fp; 119142e9a92fSRobert Love 119242e9a92fSRobert Love FC_DEBUG_LPORT("Port (%6x) entered SCR state from %s state\n", 119342e9a92fSRobert Love fc_host_port_id(lport->host), fc_lport_state(lport)); 119442e9a92fSRobert Love 119542e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_SCR); 119642e9a92fSRobert Love 119742e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr)); 119842e9a92fSRobert Love if (!fp) { 119942e9a92fSRobert Love fc_lport_error(lport, fp); 120042e9a92fSRobert Love return; 120142e9a92fSRobert Love } 120242e9a92fSRobert Love 120342e9a92fSRobert Love if (!lport->tt.elsct_send(lport, NULL, fp, ELS_SCR, 120442e9a92fSRobert Love fc_lport_scr_resp, lport, lport->e_d_tov)) 120542e9a92fSRobert Love fc_lport_error(lport, fp); 120642e9a92fSRobert Love } 120742e9a92fSRobert Love 120842e9a92fSRobert Love /** 120942e9a92fSRobert Love * fc_lport_enter_rft_id - Register FC4-types with the name server 121042e9a92fSRobert Love * @lport: Fibre Channel local port to register 121142e9a92fSRobert Love * 121242e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 121342e9a92fSRobert Love * this routine. 121442e9a92fSRobert Love */ 121542e9a92fSRobert Love static void fc_lport_enter_rft_id(struct fc_lport *lport) 121642e9a92fSRobert Love { 121742e9a92fSRobert Love struct fc_frame *fp; 121842e9a92fSRobert Love struct fc_ns_fts *lps; 121942e9a92fSRobert Love int i; 122042e9a92fSRobert Love 122142e9a92fSRobert Love FC_DEBUG_LPORT("Port (%6x) entered RFT_ID state from %s state\n", 122242e9a92fSRobert Love fc_host_port_id(lport->host), fc_lport_state(lport)); 122342e9a92fSRobert Love 122442e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_RFT_ID); 122542e9a92fSRobert Love 122642e9a92fSRobert Love lps = &lport->fcts; 122742e9a92fSRobert Love i = sizeof(lps->ff_type_map) / sizeof(lps->ff_type_map[0]); 122842e9a92fSRobert Love while (--i >= 0) 122942e9a92fSRobert Love if (ntohl(lps->ff_type_map[i]) != 0) 123042e9a92fSRobert Love break; 123142e9a92fSRobert Love if (i < 0) { 123242e9a92fSRobert Love /* nothing to register, move on to SCR */ 123342e9a92fSRobert Love fc_lport_enter_scr(lport); 123442e9a92fSRobert Love return; 123542e9a92fSRobert Love } 123642e9a92fSRobert Love 123742e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + 123842e9a92fSRobert Love sizeof(struct fc_ns_rft)); 123942e9a92fSRobert Love if (!fp) { 124042e9a92fSRobert Love fc_lport_error(lport, fp); 124142e9a92fSRobert Love return; 124242e9a92fSRobert Love } 124342e9a92fSRobert Love 124442e9a92fSRobert Love if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RFT_ID, 124542e9a92fSRobert Love fc_lport_rft_id_resp, 124642e9a92fSRobert Love lport, lport->e_d_tov)) 124742e9a92fSRobert Love fc_lport_error(lport, fp); 124842e9a92fSRobert Love } 124942e9a92fSRobert Love 125042e9a92fSRobert Love /** 125142e9a92fSRobert Love * fc_rport_enter_rft_id - Register port name with the name server 125242e9a92fSRobert Love * @lport: Fibre Channel local port to register 125342e9a92fSRobert Love * 125442e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 125542e9a92fSRobert Love * this routine. 125642e9a92fSRobert Love */ 125742e9a92fSRobert Love static void fc_lport_enter_rpn_id(struct fc_lport *lport) 125842e9a92fSRobert Love { 125942e9a92fSRobert Love struct fc_frame *fp; 126042e9a92fSRobert Love 126142e9a92fSRobert Love FC_DEBUG_LPORT("Port (%6x) entered RPN_ID state from %s state\n", 126242e9a92fSRobert Love fc_host_port_id(lport->host), fc_lport_state(lport)); 126342e9a92fSRobert Love 126442e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_RPN_ID); 126542e9a92fSRobert Love 126642e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + 126742e9a92fSRobert Love sizeof(struct fc_ns_rn_id)); 126842e9a92fSRobert Love if (!fp) { 126942e9a92fSRobert Love fc_lport_error(lport, fp); 127042e9a92fSRobert Love return; 127142e9a92fSRobert Love } 127242e9a92fSRobert Love 127342e9a92fSRobert Love if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RPN_ID, 127442e9a92fSRobert Love fc_lport_rpn_id_resp, 127542e9a92fSRobert Love lport, lport->e_d_tov)) 127642e9a92fSRobert Love fc_lport_error(lport, fp); 127742e9a92fSRobert Love } 127842e9a92fSRobert Love 127942e9a92fSRobert Love static struct fc_rport_operations fc_lport_rport_ops = { 128042e9a92fSRobert Love .event_callback = fc_lport_rport_callback, 128142e9a92fSRobert Love }; 128242e9a92fSRobert Love 128342e9a92fSRobert Love /** 128442e9a92fSRobert Love * fc_rport_enter_dns - Create a rport to the name server 128542e9a92fSRobert Love * @lport: Fibre Channel local port requesting a rport for the name server 128642e9a92fSRobert Love * 128742e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 128842e9a92fSRobert Love * this routine. 128942e9a92fSRobert Love */ 129042e9a92fSRobert Love static void fc_lport_enter_dns(struct fc_lport *lport) 129142e9a92fSRobert Love { 129242e9a92fSRobert Love struct fc_rport *rport; 129342e9a92fSRobert Love struct fc_rport_libfc_priv *rdata; 129442e9a92fSRobert Love struct fc_disc_port dp; 129542e9a92fSRobert Love 129642e9a92fSRobert Love dp.ids.port_id = FC_FID_DIR_SERV; 129742e9a92fSRobert Love dp.ids.port_name = -1; 129842e9a92fSRobert Love dp.ids.node_name = -1; 129942e9a92fSRobert Love dp.ids.roles = FC_RPORT_ROLE_UNKNOWN; 130042e9a92fSRobert Love dp.lp = lport; 130142e9a92fSRobert Love 130242e9a92fSRobert Love FC_DEBUG_LPORT("Port (%6x) entered DNS state from %s state\n", 130342e9a92fSRobert Love fc_host_port_id(lport->host), fc_lport_state(lport)); 130442e9a92fSRobert Love 130542e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_DNS); 130642e9a92fSRobert Love 130742e9a92fSRobert Love rport = fc_rport_rogue_create(&dp); 130842e9a92fSRobert Love if (!rport) 130942e9a92fSRobert Love goto err; 131042e9a92fSRobert Love 131142e9a92fSRobert Love rdata = rport->dd_data; 131242e9a92fSRobert Love rdata->ops = &fc_lport_rport_ops; 131342e9a92fSRobert Love lport->tt.rport_login(rport); 131442e9a92fSRobert Love return; 131542e9a92fSRobert Love 131642e9a92fSRobert Love err: 131742e9a92fSRobert Love fc_lport_error(lport, NULL); 131842e9a92fSRobert Love } 131942e9a92fSRobert Love 132042e9a92fSRobert Love /** 132142e9a92fSRobert Love * fc_lport_timeout - Handler for the retry_work timer. 132242e9a92fSRobert Love * @work: The work struct of the fc_lport 132342e9a92fSRobert Love */ 132442e9a92fSRobert Love static void fc_lport_timeout(struct work_struct *work) 132542e9a92fSRobert Love { 132642e9a92fSRobert Love struct fc_lport *lport = 132742e9a92fSRobert Love container_of(work, struct fc_lport, 132842e9a92fSRobert Love retry_work.work); 132942e9a92fSRobert Love 133042e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 133142e9a92fSRobert Love 133242e9a92fSRobert Love switch (lport->state) { 133342e9a92fSRobert Love case LPORT_ST_NONE: 133442e9a92fSRobert Love case LPORT_ST_READY: 133542e9a92fSRobert Love case LPORT_ST_RESET: 133642e9a92fSRobert Love WARN_ON(1); 133742e9a92fSRobert Love break; 133842e9a92fSRobert Love case LPORT_ST_FLOGI: 133942e9a92fSRobert Love fc_lport_enter_flogi(lport); 134042e9a92fSRobert Love break; 134142e9a92fSRobert Love case LPORT_ST_DNS: 134242e9a92fSRobert Love fc_lport_enter_dns(lport); 134342e9a92fSRobert Love break; 134442e9a92fSRobert Love case LPORT_ST_RPN_ID: 134542e9a92fSRobert Love fc_lport_enter_rpn_id(lport); 134642e9a92fSRobert Love break; 134742e9a92fSRobert Love case LPORT_ST_RFT_ID: 134842e9a92fSRobert Love fc_lport_enter_rft_id(lport); 134942e9a92fSRobert Love break; 135042e9a92fSRobert Love case LPORT_ST_SCR: 135142e9a92fSRobert Love fc_lport_enter_scr(lport); 135242e9a92fSRobert Love break; 135342e9a92fSRobert Love case LPORT_ST_LOGO: 135442e9a92fSRobert Love fc_lport_enter_logo(lport); 135542e9a92fSRobert Love break; 135642e9a92fSRobert Love } 135742e9a92fSRobert Love 135842e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 135942e9a92fSRobert Love } 136042e9a92fSRobert Love 136142e9a92fSRobert Love /** 136242e9a92fSRobert Love * fc_lport_logo_resp - Handle response to LOGO request 136342e9a92fSRobert Love * @sp: current sequence in LOGO exchange 136442e9a92fSRobert Love * @fp: response frame 136542e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the LOGO request 136642e9a92fSRobert Love * 136742e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 136842e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 136942e9a92fSRobert Love * and then unlock the lport. 137042e9a92fSRobert Love */ 137142e9a92fSRobert Love static void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp, 137242e9a92fSRobert Love void *lp_arg) 137342e9a92fSRobert Love { 137442e9a92fSRobert Love struct fc_lport *lport = lp_arg; 137542e9a92fSRobert Love u8 op; 137642e9a92fSRobert Love 137742e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 137842e9a92fSRobert Love return; 137942e9a92fSRobert Love 138042e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 138142e9a92fSRobert Love 138242e9a92fSRobert Love FC_DEBUG_LPORT("Received a LOGO response\n"); 138342e9a92fSRobert Love 138442e9a92fSRobert Love if (lport->state != LPORT_ST_LOGO) { 138542e9a92fSRobert Love FC_DBG("Received a LOGO response, but in state %s\n", 138642e9a92fSRobert Love fc_lport_state(lport)); 138742e9a92fSRobert Love goto out; 138842e9a92fSRobert Love } 138942e9a92fSRobert Love 139042e9a92fSRobert Love if (IS_ERR(fp)) { 139142e9a92fSRobert Love fc_lport_error(lport, fp); 139242e9a92fSRobert Love goto err; 139342e9a92fSRobert Love } 139442e9a92fSRobert Love 139542e9a92fSRobert Love op = fc_frame_payload_op(fp); 139642e9a92fSRobert Love if (op == ELS_LS_ACC) 139742e9a92fSRobert Love fc_lport_enter_reset(lport); 139842e9a92fSRobert Love else 139942e9a92fSRobert Love fc_lport_error(lport, fp); 140042e9a92fSRobert Love 140142e9a92fSRobert Love out: 140242e9a92fSRobert Love fc_frame_free(fp); 140342e9a92fSRobert Love err: 140442e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 140542e9a92fSRobert Love } 140642e9a92fSRobert Love 140742e9a92fSRobert Love /** 140842e9a92fSRobert Love * fc_rport_enter_logo - Logout of the fabric 140942e9a92fSRobert Love * @lport: Fibre Channel local port to be logged out 141042e9a92fSRobert Love * 141142e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 141242e9a92fSRobert Love * this routine. 141342e9a92fSRobert Love */ 141442e9a92fSRobert Love static void fc_lport_enter_logo(struct fc_lport *lport) 141542e9a92fSRobert Love { 141642e9a92fSRobert Love struct fc_frame *fp; 141742e9a92fSRobert Love struct fc_els_logo *logo; 141842e9a92fSRobert Love 141942e9a92fSRobert Love FC_DEBUG_LPORT("Port (%6x) entered LOGO state from %s state\n", 142042e9a92fSRobert Love fc_host_port_id(lport->host), fc_lport_state(lport)); 142142e9a92fSRobert Love 142242e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_LOGO); 142342e9a92fSRobert Love 142442e9a92fSRobert Love /* DNS session should be closed so we can release it here */ 142542e9a92fSRobert Love if (lport->dns_rp) 142642e9a92fSRobert Love lport->tt.rport_logoff(lport->dns_rp); 142742e9a92fSRobert Love 142842e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(*logo)); 142942e9a92fSRobert Love if (!fp) { 143042e9a92fSRobert Love fc_lport_error(lport, fp); 143142e9a92fSRobert Love return; 143242e9a92fSRobert Love } 143342e9a92fSRobert Love 143442e9a92fSRobert Love if (!lport->tt.elsct_send(lport, NULL, fp, ELS_LOGO, fc_lport_logo_resp, 143542e9a92fSRobert Love lport, lport->e_d_tov)) 143642e9a92fSRobert Love fc_lport_error(lport, fp); 143742e9a92fSRobert Love } 143842e9a92fSRobert Love 143942e9a92fSRobert Love /** 144042e9a92fSRobert Love * fc_lport_flogi_resp - Handle response to FLOGI request 144142e9a92fSRobert Love * @sp: current sequence in FLOGI exchange 144242e9a92fSRobert Love * @fp: response frame 144342e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the FLOGI request 144442e9a92fSRobert Love * 144542e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 144642e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 144742e9a92fSRobert Love * and then unlock the lport. 144842e9a92fSRobert Love */ 144942e9a92fSRobert Love static void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, 145042e9a92fSRobert Love void *lp_arg) 145142e9a92fSRobert Love { 145242e9a92fSRobert Love struct fc_lport *lport = lp_arg; 145342e9a92fSRobert Love struct fc_frame_header *fh; 145442e9a92fSRobert Love struct fc_els_flogi *flp; 145542e9a92fSRobert Love u32 did; 145642e9a92fSRobert Love u16 csp_flags; 145742e9a92fSRobert Love unsigned int r_a_tov; 145842e9a92fSRobert Love unsigned int e_d_tov; 145942e9a92fSRobert Love u16 mfs; 146042e9a92fSRobert Love 146142e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 146242e9a92fSRobert Love return; 146342e9a92fSRobert Love 146442e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 146542e9a92fSRobert Love 146642e9a92fSRobert Love FC_DEBUG_LPORT("Received a FLOGI response\n"); 146742e9a92fSRobert Love 146842e9a92fSRobert Love if (lport->state != LPORT_ST_FLOGI) { 146942e9a92fSRobert Love FC_DBG("Received a FLOGI response, but in state %s\n", 147042e9a92fSRobert Love fc_lport_state(lport)); 147142e9a92fSRobert Love goto out; 147242e9a92fSRobert Love } 147342e9a92fSRobert Love 147442e9a92fSRobert Love if (IS_ERR(fp)) { 147542e9a92fSRobert Love fc_lport_error(lport, fp); 147642e9a92fSRobert Love goto err; 147742e9a92fSRobert Love } 147842e9a92fSRobert Love 147942e9a92fSRobert Love fh = fc_frame_header_get(fp); 148042e9a92fSRobert Love did = ntoh24(fh->fh_d_id); 148142e9a92fSRobert Love if (fc_frame_payload_op(fp) == ELS_LS_ACC && did != 0) { 148242e9a92fSRobert Love 148342e9a92fSRobert Love FC_DEBUG_LPORT("Assigned fid %x\n", did); 148442e9a92fSRobert Love fc_host_port_id(lport->host) = did; 148542e9a92fSRobert Love 148642e9a92fSRobert Love flp = fc_frame_payload_get(fp, sizeof(*flp)); 148742e9a92fSRobert Love if (flp) { 148842e9a92fSRobert Love mfs = ntohs(flp->fl_csp.sp_bb_data) & 148942e9a92fSRobert Love FC_SP_BB_DATA_MASK; 149042e9a92fSRobert Love if (mfs >= FC_SP_MIN_MAX_PAYLOAD && 149142e9a92fSRobert Love mfs < lport->mfs) 149242e9a92fSRobert Love lport->mfs = mfs; 149342e9a92fSRobert Love csp_flags = ntohs(flp->fl_csp.sp_features); 149442e9a92fSRobert Love r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov); 149542e9a92fSRobert Love e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov); 149642e9a92fSRobert Love if (csp_flags & FC_SP_FT_EDTR) 149742e9a92fSRobert Love e_d_tov /= 1000000; 149842e9a92fSRobert Love if ((csp_flags & FC_SP_FT_FPORT) == 0) { 149942e9a92fSRobert Love if (e_d_tov > lport->e_d_tov) 150042e9a92fSRobert Love lport->e_d_tov = e_d_tov; 150142e9a92fSRobert Love lport->r_a_tov = 2 * e_d_tov; 150242e9a92fSRobert Love FC_DBG("Point-to-Point mode\n"); 150342e9a92fSRobert Love fc_lport_ptp_setup(lport, ntoh24(fh->fh_s_id), 150442e9a92fSRobert Love get_unaligned_be64( 150542e9a92fSRobert Love &flp->fl_wwpn), 150642e9a92fSRobert Love get_unaligned_be64( 150742e9a92fSRobert Love &flp->fl_wwnn)); 150842e9a92fSRobert Love } else { 150942e9a92fSRobert Love lport->e_d_tov = e_d_tov; 151042e9a92fSRobert Love lport->r_a_tov = r_a_tov; 151142e9a92fSRobert Love fc_host_fabric_name(lport->host) = 151242e9a92fSRobert Love get_unaligned_be64(&flp->fl_wwnn); 151342e9a92fSRobert Love fc_lport_enter_dns(lport); 151442e9a92fSRobert Love } 151542e9a92fSRobert Love } 151642e9a92fSRobert Love 151742e9a92fSRobert Love if (flp) { 151842e9a92fSRobert Love csp_flags = ntohs(flp->fl_csp.sp_features); 151942e9a92fSRobert Love if ((csp_flags & FC_SP_FT_FPORT) == 0) { 152042e9a92fSRobert Love lport->tt.disc_start(fc_lport_disc_callback, 152142e9a92fSRobert Love lport); 152242e9a92fSRobert Love } 152342e9a92fSRobert Love } 152442e9a92fSRobert Love } else { 152542e9a92fSRobert Love FC_DBG("bad FLOGI response\n"); 152642e9a92fSRobert Love } 152742e9a92fSRobert Love 152842e9a92fSRobert Love out: 152942e9a92fSRobert Love fc_frame_free(fp); 153042e9a92fSRobert Love err: 153142e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 153242e9a92fSRobert Love } 153342e9a92fSRobert Love 153442e9a92fSRobert Love /** 153542e9a92fSRobert Love * fc_rport_enter_flogi - Send a FLOGI request to the fabric manager 153642e9a92fSRobert Love * @lport: Fibre Channel local port to be logged in to the fabric 153742e9a92fSRobert Love * 153842e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 153942e9a92fSRobert Love * this routine. 154042e9a92fSRobert Love */ 154142e9a92fSRobert Love void fc_lport_enter_flogi(struct fc_lport *lport) 154242e9a92fSRobert Love { 154342e9a92fSRobert Love struct fc_frame *fp; 154442e9a92fSRobert Love 154542e9a92fSRobert Love FC_DEBUG_LPORT("Processing FLOGI state\n"); 154642e9a92fSRobert Love 154742e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_FLOGI); 154842e9a92fSRobert Love 154942e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 155042e9a92fSRobert Love if (!fp) 155142e9a92fSRobert Love return fc_lport_error(lport, fp); 155242e9a92fSRobert Love 155342e9a92fSRobert Love if (!lport->tt.elsct_send(lport, NULL, fp, ELS_FLOGI, 155442e9a92fSRobert Love fc_lport_flogi_resp, lport, lport->e_d_tov)) 155542e9a92fSRobert Love fc_lport_error(lport, fp); 155642e9a92fSRobert Love } 155742e9a92fSRobert Love 155842e9a92fSRobert Love /* Configure a fc_lport */ 155942e9a92fSRobert Love int fc_lport_config(struct fc_lport *lport) 156042e9a92fSRobert Love { 156142e9a92fSRobert Love INIT_DELAYED_WORK(&lport->retry_work, fc_lport_timeout); 156242e9a92fSRobert Love mutex_init(&lport->lp_mutex); 156342e9a92fSRobert Love 156442e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_NONE); 156542e9a92fSRobert Love 156642e9a92fSRobert Love fc_lport_add_fc4_type(lport, FC_TYPE_FCP); 156742e9a92fSRobert Love fc_lport_add_fc4_type(lport, FC_TYPE_CT); 156842e9a92fSRobert Love 156942e9a92fSRobert Love return 0; 157042e9a92fSRobert Love } 157142e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_config); 157242e9a92fSRobert Love 157342e9a92fSRobert Love int fc_lport_init(struct fc_lport *lport) 157442e9a92fSRobert Love { 157542e9a92fSRobert Love if (!lport->tt.lport_recv) 157642e9a92fSRobert Love lport->tt.lport_recv = fc_lport_recv_req; 157742e9a92fSRobert Love 157842e9a92fSRobert Love if (!lport->tt.lport_reset) 157942e9a92fSRobert Love lport->tt.lport_reset = fc_lport_reset; 158042e9a92fSRobert Love 158142e9a92fSRobert Love fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 158242e9a92fSRobert Love fc_host_node_name(lport->host) = lport->wwnn; 158342e9a92fSRobert Love fc_host_port_name(lport->host) = lport->wwpn; 158442e9a92fSRobert Love fc_host_supported_classes(lport->host) = FC_COS_CLASS3; 158542e9a92fSRobert Love memset(fc_host_supported_fc4s(lport->host), 0, 158642e9a92fSRobert Love sizeof(fc_host_supported_fc4s(lport->host))); 158742e9a92fSRobert Love fc_host_supported_fc4s(lport->host)[2] = 1; 158842e9a92fSRobert Love fc_host_supported_fc4s(lport->host)[7] = 1; 158942e9a92fSRobert Love 159042e9a92fSRobert Love /* This value is also unchanging */ 159142e9a92fSRobert Love memset(fc_host_active_fc4s(lport->host), 0, 159242e9a92fSRobert Love sizeof(fc_host_active_fc4s(lport->host))); 159342e9a92fSRobert Love fc_host_active_fc4s(lport->host)[2] = 1; 159442e9a92fSRobert Love fc_host_active_fc4s(lport->host)[7] = 1; 159542e9a92fSRobert Love fc_host_maxframe_size(lport->host) = lport->mfs; 159642e9a92fSRobert Love fc_host_supported_speeds(lport->host) = 0; 159742e9a92fSRobert Love if (lport->link_supported_speeds & FC_PORTSPEED_1GBIT) 159842e9a92fSRobert Love fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_1GBIT; 159942e9a92fSRobert Love if (lport->link_supported_speeds & FC_PORTSPEED_10GBIT) 160042e9a92fSRobert Love fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_10GBIT; 160142e9a92fSRobert Love 160242e9a92fSRobert Love return 0; 160342e9a92fSRobert Love } 160442e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_init); 1605