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 1369fb9d328SJoe Eykholt * @rdata: private remote port data 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, 1439fb9d328SJoe Eykholt struct fc_rport_priv *rdata, 14442e9a92fSRobert Love enum fc_rport_event event) 14542e9a92fSRobert Love { 1467414705eSRobert Love FC_LPORT_DBG(lport, "Received a %d event for port (%6x)\n", event, 147f211fa51SJoe Eykholt rdata->ids.port_id); 14842e9a92fSRobert Love 149b5cbf083SJoe Eykholt mutex_lock(&lport->lp_mutex); 15042e9a92fSRobert Love switch (event) { 1514c0f62b5SJoe Eykholt case RPORT_EV_READY: 15242e9a92fSRobert Love if (lport->state == LPORT_ST_DNS) { 1539fb9d328SJoe Eykholt lport->dns_rp = rdata; 15442e9a92fSRobert Love fc_lport_enter_rpn_id(lport); 15542e9a92fSRobert Love } else { 1564c0f62b5SJoe Eykholt FC_LPORT_DBG(lport, "Received an READY event " 1577414705eSRobert Love "on port (%6x) for the directory " 15842e9a92fSRobert Love "server, but the lport is not " 15942e9a92fSRobert Love "in the DNS state, it's in the " 160f211fa51SJoe Eykholt "%d state", rdata->ids.port_id, 16142e9a92fSRobert Love lport->state); 1629fb9d328SJoe Eykholt lport->tt.rport_logoff(rdata); 16342e9a92fSRobert Love } 16442e9a92fSRobert Love break; 16542e9a92fSRobert Love case RPORT_EV_LOGO: 16642e9a92fSRobert Love case RPORT_EV_FAILED: 16742e9a92fSRobert Love case RPORT_EV_STOP: 16842e9a92fSRobert Love lport->dns_rp = NULL; 16942e9a92fSRobert Love break; 17042e9a92fSRobert Love case RPORT_EV_NONE: 17142e9a92fSRobert Love break; 17242e9a92fSRobert Love } 173b5cbf083SJoe Eykholt mutex_unlock(&lport->lp_mutex); 17442e9a92fSRobert Love } 17542e9a92fSRobert Love 17642e9a92fSRobert Love /** 17734f42a07SRobert Love * fc_lport_state() - Return a string which represents the lport's state 17842e9a92fSRobert Love * @lport: The lport whose state is to converted to a string 17942e9a92fSRobert Love */ 18042e9a92fSRobert Love static const char *fc_lport_state(struct fc_lport *lport) 18142e9a92fSRobert Love { 18242e9a92fSRobert Love const char *cp; 18342e9a92fSRobert Love 18442e9a92fSRobert Love cp = fc_lport_state_names[lport->state]; 18542e9a92fSRobert Love if (!cp) 18642e9a92fSRobert Love cp = "unknown"; 18742e9a92fSRobert Love return cp; 18842e9a92fSRobert Love } 18942e9a92fSRobert Love 19042e9a92fSRobert Love /** 19134f42a07SRobert Love * fc_lport_ptp_setup() - Create an rport for point-to-point mode 19242e9a92fSRobert Love * @lport: The lport to attach the ptp rport to 19342e9a92fSRobert Love * @fid: The FID of the ptp rport 19442e9a92fSRobert Love * @remote_wwpn: The WWPN of the ptp rport 19542e9a92fSRobert Love * @remote_wwnn: The WWNN of the ptp rport 19642e9a92fSRobert Love */ 19742e9a92fSRobert Love static void fc_lport_ptp_setup(struct fc_lport *lport, 19842e9a92fSRobert Love u32 remote_fid, u64 remote_wwpn, 19942e9a92fSRobert Love u64 remote_wwnn) 20042e9a92fSRobert Love { 20148f00902SJoe Eykholt mutex_lock(&lport->disc.disc_mutex); 20248f00902SJoe Eykholt if (lport->ptp_rp) 20342e9a92fSRobert Love lport->tt.rport_logoff(lport->ptp_rp); 2049737e6a7SRobert Love lport->ptp_rp = lport->tt.rport_create(lport, remote_fid); 2059737e6a7SRobert Love lport->ptp_rp->ids.port_name = remote_wwpn; 2069737e6a7SRobert Love lport->ptp_rp->ids.node_name = remote_wwnn; 20748f00902SJoe Eykholt mutex_unlock(&lport->disc.disc_mutex); 20842e9a92fSRobert Love 20942e9a92fSRobert Love lport->tt.rport_login(lport->ptp_rp); 21042e9a92fSRobert Love 21142e9a92fSRobert Love fc_lport_enter_ready(lport); 21242e9a92fSRobert Love } 21342e9a92fSRobert Love 21442e9a92fSRobert Love void fc_get_host_port_type(struct Scsi_Host *shost) 21542e9a92fSRobert Love { 21642e9a92fSRobert Love /* TODO - currently just NPORT */ 21742e9a92fSRobert Love fc_host_port_type(shost) = FC_PORTTYPE_NPORT; 21842e9a92fSRobert Love } 21942e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_port_type); 22042e9a92fSRobert Love 22142e9a92fSRobert Love void fc_get_host_port_state(struct Scsi_Host *shost) 22242e9a92fSRobert Love { 22342e9a92fSRobert Love struct fc_lport *lp = shost_priv(shost); 22442e9a92fSRobert Love 225bc0e17f6SVasu Dev if (lp->link_up) 22642e9a92fSRobert Love fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; 22742e9a92fSRobert Love else 22842e9a92fSRobert Love fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; 22942e9a92fSRobert Love } 23042e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_port_state); 23142e9a92fSRobert Love 23242e9a92fSRobert Love void fc_get_host_speed(struct Scsi_Host *shost) 23342e9a92fSRobert Love { 23442e9a92fSRobert Love struct fc_lport *lport = shost_priv(shost); 23542e9a92fSRobert Love 23642e9a92fSRobert Love fc_host_speed(shost) = lport->link_speed; 23742e9a92fSRobert Love } 23842e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_speed); 23942e9a92fSRobert Love 24042e9a92fSRobert Love struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost) 24142e9a92fSRobert Love { 24242e9a92fSRobert Love struct fc_host_statistics *fcoe_stats; 24342e9a92fSRobert Love struct fc_lport *lp = shost_priv(shost); 24442e9a92fSRobert Love struct timespec v0, v1; 245582b45bcSRobert Love unsigned int cpu; 24642e9a92fSRobert Love 24742e9a92fSRobert Love fcoe_stats = &lp->host_stats; 24842e9a92fSRobert Love memset(fcoe_stats, 0, sizeof(struct fc_host_statistics)); 24942e9a92fSRobert Love 25042e9a92fSRobert Love jiffies_to_timespec(jiffies, &v0); 25142e9a92fSRobert Love jiffies_to_timespec(lp->boot_time, &v1); 25242e9a92fSRobert Love fcoe_stats->seconds_since_last_reset = (v0.tv_sec - v1.tv_sec); 25342e9a92fSRobert Love 254582b45bcSRobert Love for_each_possible_cpu(cpu) { 255582b45bcSRobert Love struct fcoe_dev_stats *stats; 256582b45bcSRobert Love 257582b45bcSRobert Love stats = per_cpu_ptr(lp->dev_stats, cpu); 258582b45bcSRobert Love 25942e9a92fSRobert Love fcoe_stats->tx_frames += stats->TxFrames; 26042e9a92fSRobert Love fcoe_stats->tx_words += stats->TxWords; 26142e9a92fSRobert Love fcoe_stats->rx_frames += stats->RxFrames; 26242e9a92fSRobert Love fcoe_stats->rx_words += stats->RxWords; 26342e9a92fSRobert Love fcoe_stats->error_frames += stats->ErrorFrames; 26442e9a92fSRobert Love fcoe_stats->invalid_crc_count += stats->InvalidCRCCount; 26542e9a92fSRobert Love fcoe_stats->fcp_input_requests += stats->InputRequests; 26642e9a92fSRobert Love fcoe_stats->fcp_output_requests += stats->OutputRequests; 26742e9a92fSRobert Love fcoe_stats->fcp_control_requests += stats->ControlRequests; 26842e9a92fSRobert Love fcoe_stats->fcp_input_megabytes += stats->InputMegabytes; 26942e9a92fSRobert Love fcoe_stats->fcp_output_megabytes += stats->OutputMegabytes; 27042e9a92fSRobert Love fcoe_stats->link_failure_count += stats->LinkFailureCount; 27142e9a92fSRobert Love } 27242e9a92fSRobert Love fcoe_stats->lip_count = -1; 27342e9a92fSRobert Love fcoe_stats->nos_count = -1; 27442e9a92fSRobert Love fcoe_stats->loss_of_sync_count = -1; 27542e9a92fSRobert Love fcoe_stats->loss_of_signal_count = -1; 27642e9a92fSRobert Love fcoe_stats->prim_seq_protocol_err_count = -1; 27742e9a92fSRobert Love fcoe_stats->dumped_frames = -1; 27842e9a92fSRobert Love return fcoe_stats; 27942e9a92fSRobert Love } 28042e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_stats); 28142e9a92fSRobert Love 28242e9a92fSRobert Love /* 28342e9a92fSRobert Love * Fill in FLOGI command for request. 28442e9a92fSRobert Love */ 28542e9a92fSRobert Love static void 28642e9a92fSRobert Love fc_lport_flogi_fill(struct fc_lport *lport, struct fc_els_flogi *flogi, 28742e9a92fSRobert Love unsigned int op) 28842e9a92fSRobert Love { 28942e9a92fSRobert Love struct fc_els_csp *sp; 29042e9a92fSRobert Love struct fc_els_cssp *cp; 29142e9a92fSRobert Love 29242e9a92fSRobert Love memset(flogi, 0, sizeof(*flogi)); 29342e9a92fSRobert Love flogi->fl_cmd = (u8) op; 29442e9a92fSRobert Love put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn); 29542e9a92fSRobert Love put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn); 29642e9a92fSRobert Love sp = &flogi->fl_csp; 29742e9a92fSRobert Love sp->sp_hi_ver = 0x20; 29842e9a92fSRobert Love sp->sp_lo_ver = 0x20; 29942e9a92fSRobert Love sp->sp_bb_cred = htons(10); /* this gets set by gateway */ 30042e9a92fSRobert Love sp->sp_bb_data = htons((u16) lport->mfs); 30142e9a92fSRobert Love cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */ 30242e9a92fSRobert Love cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ); 30342e9a92fSRobert Love if (op != ELS_FLOGI) { 30442e9a92fSRobert Love sp->sp_features = htons(FC_SP_FT_CIRO); 30542e9a92fSRobert Love sp->sp_tot_seq = htons(255); /* seq. we accept */ 30642e9a92fSRobert Love sp->sp_rel_off = htons(0x1f); 30742e9a92fSRobert Love sp->sp_e_d_tov = htonl(lport->e_d_tov); 30842e9a92fSRobert Love 30942e9a92fSRobert Love cp->cp_rdfs = htons((u16) lport->mfs); 31042e9a92fSRobert Love cp->cp_con_seq = htons(255); 31142e9a92fSRobert Love cp->cp_open_seq = 1; 31242e9a92fSRobert Love } 31342e9a92fSRobert Love } 31442e9a92fSRobert Love 31542e9a92fSRobert Love /* 31642e9a92fSRobert Love * Add a supported FC-4 type. 31742e9a92fSRobert Love */ 31842e9a92fSRobert Love static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type) 31942e9a92fSRobert Love { 32042e9a92fSRobert Love __be32 *mp; 32142e9a92fSRobert Love 32242e9a92fSRobert Love mp = &lport->fcts.ff_type_map[type / FC_NS_BPW]; 32342e9a92fSRobert Love *mp = htonl(ntohl(*mp) | 1UL << (type % FC_NS_BPW)); 32442e9a92fSRobert Love } 32542e9a92fSRobert Love 32642e9a92fSRobert Love /** 32734f42a07SRobert Love * fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report. 32842e9a92fSRobert Love * @lport: Fibre Channel local port recieving the RLIR 32942e9a92fSRobert Love * @sp: current sequence in the RLIR exchange 33042e9a92fSRobert Love * @fp: RLIR request frame 33142e9a92fSRobert Love * 33242e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 33342e9a92fSRobert Love * this function. 33442e9a92fSRobert Love */ 33542e9a92fSRobert Love static void fc_lport_recv_rlir_req(struct fc_seq *sp, struct fc_frame *fp, 33642e9a92fSRobert Love struct fc_lport *lport) 33742e9a92fSRobert Love { 3387414705eSRobert Love FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n", 33942e9a92fSRobert Love fc_lport_state(lport)); 34042e9a92fSRobert Love 34142e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); 34242e9a92fSRobert Love fc_frame_free(fp); 34342e9a92fSRobert Love } 34442e9a92fSRobert Love 34542e9a92fSRobert Love /** 34634f42a07SRobert Love * fc_lport_recv_echo_req() - Handle received ECHO request 34742e9a92fSRobert Love * @lport: Fibre Channel local port recieving the ECHO 34842e9a92fSRobert Love * @sp: current sequence in the ECHO exchange 34942e9a92fSRobert Love * @fp: ECHO request frame 35042e9a92fSRobert Love * 35142e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 35242e9a92fSRobert Love * this function. 35342e9a92fSRobert Love */ 35442e9a92fSRobert Love static void fc_lport_recv_echo_req(struct fc_seq *sp, struct fc_frame *in_fp, 35542e9a92fSRobert Love struct fc_lport *lport) 35642e9a92fSRobert Love { 35742e9a92fSRobert Love struct fc_frame *fp; 35842e9a92fSRobert Love struct fc_exch *ep = fc_seq_exch(sp); 35942e9a92fSRobert Love unsigned int len; 36042e9a92fSRobert Love void *pp; 36142e9a92fSRobert Love void *dp; 36242e9a92fSRobert Love u32 f_ctl; 36342e9a92fSRobert Love 3647414705eSRobert Love FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n", 36542e9a92fSRobert Love fc_lport_state(lport)); 36642e9a92fSRobert Love 36742e9a92fSRobert Love len = fr_len(in_fp) - sizeof(struct fc_frame_header); 36842e9a92fSRobert Love pp = fc_frame_payload_get(in_fp, len); 36942e9a92fSRobert Love 37042e9a92fSRobert Love if (len < sizeof(__be32)) 37142e9a92fSRobert Love len = sizeof(__be32); 37242e9a92fSRobert Love 37342e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 37442e9a92fSRobert Love if (fp) { 37542e9a92fSRobert Love dp = fc_frame_payload_get(fp, len); 37642e9a92fSRobert Love memcpy(dp, pp, len); 37742e9a92fSRobert Love *((u32 *)dp) = htonl(ELS_LS_ACC << 24); 37842e9a92fSRobert Love sp = lport->tt.seq_start_next(sp); 37942e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; 38042e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 38142e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 38242e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 38342e9a92fSRobert Love } 38442e9a92fSRobert Love fc_frame_free(in_fp); 38542e9a92fSRobert Love } 38642e9a92fSRobert Love 38742e9a92fSRobert Love /** 38834f42a07SRobert Love * fc_lport_recv_echo_req() - Handle received Request Node ID data request 38942e9a92fSRobert Love * @lport: Fibre Channel local port recieving the RNID 39042e9a92fSRobert Love * @sp: current sequence in the RNID exchange 39142e9a92fSRobert Love * @fp: RNID request frame 39242e9a92fSRobert Love * 39342e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 39442e9a92fSRobert Love * this function. 39542e9a92fSRobert Love */ 39642e9a92fSRobert Love static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp, 39742e9a92fSRobert Love struct fc_lport *lport) 39842e9a92fSRobert Love { 39942e9a92fSRobert Love struct fc_frame *fp; 40042e9a92fSRobert Love struct fc_exch *ep = fc_seq_exch(sp); 40142e9a92fSRobert Love struct fc_els_rnid *req; 40242e9a92fSRobert Love struct { 40342e9a92fSRobert Love struct fc_els_rnid_resp rnid; 40442e9a92fSRobert Love struct fc_els_rnid_cid cid; 40542e9a92fSRobert Love struct fc_els_rnid_gen gen; 40642e9a92fSRobert Love } *rp; 40742e9a92fSRobert Love struct fc_seq_els_data rjt_data; 40842e9a92fSRobert Love u8 fmt; 40942e9a92fSRobert Love size_t len; 41042e9a92fSRobert Love u32 f_ctl; 41142e9a92fSRobert Love 4127414705eSRobert Love FC_LPORT_DBG(lport, "Received RNID request while in state %s\n", 41342e9a92fSRobert Love fc_lport_state(lport)); 41442e9a92fSRobert Love 41542e9a92fSRobert Love req = fc_frame_payload_get(in_fp, sizeof(*req)); 41642e9a92fSRobert Love if (!req) { 41742e9a92fSRobert Love rjt_data.fp = NULL; 41842e9a92fSRobert Love rjt_data.reason = ELS_RJT_LOGIC; 41942e9a92fSRobert Love rjt_data.explan = ELS_EXPL_NONE; 42042e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); 42142e9a92fSRobert Love } else { 42242e9a92fSRobert Love fmt = req->rnid_fmt; 42342e9a92fSRobert Love len = sizeof(*rp); 42442e9a92fSRobert Love if (fmt != ELS_RNIDF_GEN || 42542e9a92fSRobert Love ntohl(lport->rnid_gen.rnid_atype) == 0) { 42642e9a92fSRobert Love fmt = ELS_RNIDF_NONE; /* nothing to provide */ 42742e9a92fSRobert Love len -= sizeof(rp->gen); 42842e9a92fSRobert Love } 42942e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 43042e9a92fSRobert Love if (fp) { 43142e9a92fSRobert Love rp = fc_frame_payload_get(fp, len); 43242e9a92fSRobert Love memset(rp, 0, len); 43342e9a92fSRobert Love rp->rnid.rnid_cmd = ELS_LS_ACC; 43442e9a92fSRobert Love rp->rnid.rnid_fmt = fmt; 43542e9a92fSRobert Love rp->rnid.rnid_cid_len = sizeof(rp->cid); 43642e9a92fSRobert Love rp->cid.rnid_wwpn = htonll(lport->wwpn); 43742e9a92fSRobert Love rp->cid.rnid_wwnn = htonll(lport->wwnn); 43842e9a92fSRobert Love if (fmt == ELS_RNIDF_GEN) { 43942e9a92fSRobert Love rp->rnid.rnid_sid_len = sizeof(rp->gen); 44042e9a92fSRobert Love memcpy(&rp->gen, &lport->rnid_gen, 44142e9a92fSRobert Love sizeof(rp->gen)); 44242e9a92fSRobert Love } 44342e9a92fSRobert Love sp = lport->tt.seq_start_next(sp); 44442e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; 44542e9a92fSRobert Love f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; 44642e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 44742e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 44842e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 44942e9a92fSRobert Love } 45042e9a92fSRobert Love } 45142e9a92fSRobert Love fc_frame_free(in_fp); 45242e9a92fSRobert Love } 45342e9a92fSRobert Love 45442e9a92fSRobert Love /** 45534f42a07SRobert Love * fc_lport_recv_adisc_req() - Handle received Address Discovery Request 45642e9a92fSRobert Love * @lport: Fibre Channel local port recieving the ADISC 45742e9a92fSRobert Love * @sp: current sequence in the ADISC exchange 45842e9a92fSRobert Love * @fp: ADISC request frame 45942e9a92fSRobert Love * 46042e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 46142e9a92fSRobert Love * this function. 46242e9a92fSRobert Love */ 46342e9a92fSRobert Love static void fc_lport_recv_adisc_req(struct fc_seq *sp, struct fc_frame *in_fp, 46442e9a92fSRobert Love struct fc_lport *lport) 46542e9a92fSRobert Love { 46642e9a92fSRobert Love struct fc_frame *fp; 46742e9a92fSRobert Love struct fc_exch *ep = fc_seq_exch(sp); 46842e9a92fSRobert Love struct fc_els_adisc *req, *rp; 46942e9a92fSRobert Love struct fc_seq_els_data rjt_data; 47042e9a92fSRobert Love size_t len; 47142e9a92fSRobert Love u32 f_ctl; 47242e9a92fSRobert Love 4737414705eSRobert Love FC_LPORT_DBG(lport, "Received ADISC request while in state %s\n", 47442e9a92fSRobert Love fc_lport_state(lport)); 47542e9a92fSRobert Love 47642e9a92fSRobert Love req = fc_frame_payload_get(in_fp, sizeof(*req)); 47742e9a92fSRobert Love if (!req) { 47842e9a92fSRobert Love rjt_data.fp = NULL; 47942e9a92fSRobert Love rjt_data.reason = ELS_RJT_LOGIC; 48042e9a92fSRobert Love rjt_data.explan = ELS_EXPL_NONE; 48142e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); 48242e9a92fSRobert Love } else { 48342e9a92fSRobert Love len = sizeof(*rp); 48442e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 48542e9a92fSRobert Love if (fp) { 48642e9a92fSRobert Love rp = fc_frame_payload_get(fp, len); 48742e9a92fSRobert Love memset(rp, 0, len); 48842e9a92fSRobert Love rp->adisc_cmd = ELS_LS_ACC; 48942e9a92fSRobert Love rp->adisc_wwpn = htonll(lport->wwpn); 49042e9a92fSRobert Love rp->adisc_wwnn = htonll(lport->wwnn); 49142e9a92fSRobert Love hton24(rp->adisc_port_id, 49242e9a92fSRobert Love fc_host_port_id(lport->host)); 49342e9a92fSRobert Love sp = lport->tt.seq_start_next(sp); 49442e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; 49542e9a92fSRobert Love f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; 49642e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 49742e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 49842e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 49942e9a92fSRobert Love } 50042e9a92fSRobert Love } 50142e9a92fSRobert Love fc_frame_free(in_fp); 50242e9a92fSRobert Love } 50342e9a92fSRobert Love 50442e9a92fSRobert Love /** 50534f42a07SRobert Love * fc_lport_recv_logo_req() - Handle received fabric LOGO request 50642e9a92fSRobert Love * @lport: Fibre Channel local port recieving the LOGO 50742e9a92fSRobert Love * @sp: current sequence in the LOGO exchange 50842e9a92fSRobert Love * @fp: LOGO request frame 50942e9a92fSRobert Love * 51042e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 51142e9a92fSRobert Love * this function. 51242e9a92fSRobert Love */ 51342e9a92fSRobert Love static void fc_lport_recv_logo_req(struct fc_seq *sp, struct fc_frame *fp, 51442e9a92fSRobert Love struct fc_lport *lport) 51542e9a92fSRobert Love { 51642e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); 51742e9a92fSRobert Love fc_lport_enter_reset(lport); 51842e9a92fSRobert Love fc_frame_free(fp); 51942e9a92fSRobert Love } 52042e9a92fSRobert Love 52142e9a92fSRobert Love /** 52234f42a07SRobert Love * fc_fabric_login() - Start the lport state machine 52342e9a92fSRobert Love * @lport: The lport that should log into the fabric 52442e9a92fSRobert Love * 52542e9a92fSRobert Love * Locking Note: This function should not be called 52642e9a92fSRobert Love * with the lport lock held. 52742e9a92fSRobert Love */ 52842e9a92fSRobert Love int fc_fabric_login(struct fc_lport *lport) 52942e9a92fSRobert Love { 53042e9a92fSRobert Love int rc = -1; 53142e9a92fSRobert Love 53242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 533b1d9fd55SJoe Eykholt if (lport->state == LPORT_ST_DISABLED) { 53442e9a92fSRobert Love fc_lport_enter_reset(lport); 53542e9a92fSRobert Love rc = 0; 53642e9a92fSRobert Love } 53742e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 53842e9a92fSRobert Love 53942e9a92fSRobert Love return rc; 54042e9a92fSRobert Love } 54142e9a92fSRobert Love EXPORT_SYMBOL(fc_fabric_login); 54242e9a92fSRobert Love 54342e9a92fSRobert Love /** 54434f42a07SRobert Love * fc_linkup() - Handler for transport linkup events 54542e9a92fSRobert Love * @lport: The lport whose link is up 54642e9a92fSRobert Love */ 54742e9a92fSRobert Love void fc_linkup(struct fc_lport *lport) 54842e9a92fSRobert Love { 5497414705eSRobert Love printk(KERN_INFO "libfc: Link up on port (%6x)\n", 55042e9a92fSRobert Love fc_host_port_id(lport->host)); 55142e9a92fSRobert Love 55242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 553bc0e17f6SVasu Dev if (!lport->link_up) { 554bc0e17f6SVasu Dev lport->link_up = 1; 55542e9a92fSRobert Love 55642e9a92fSRobert Love if (lport->state == LPORT_ST_RESET) 55742e9a92fSRobert Love fc_lport_enter_flogi(lport); 55842e9a92fSRobert Love } 55942e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 56042e9a92fSRobert Love } 56142e9a92fSRobert Love EXPORT_SYMBOL(fc_linkup); 56242e9a92fSRobert Love 56342e9a92fSRobert Love /** 56434f42a07SRobert Love * fc_linkdown() - Handler for transport linkdown events 56542e9a92fSRobert Love * @lport: The lport whose link is down 56642e9a92fSRobert Love */ 56742e9a92fSRobert Love void fc_linkdown(struct fc_lport *lport) 56842e9a92fSRobert Love { 56942e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 5707414705eSRobert Love printk(KERN_INFO "libfc: Link down on port (%6x)\n", 57142e9a92fSRobert Love fc_host_port_id(lport->host)); 57242e9a92fSRobert Love 573bc0e17f6SVasu Dev if (lport->link_up) { 574bc0e17f6SVasu Dev lport->link_up = 0; 57542e9a92fSRobert Love fc_lport_enter_reset(lport); 57642e9a92fSRobert Love lport->tt.fcp_cleanup(lport); 57742e9a92fSRobert Love } 57842e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 57942e9a92fSRobert Love } 58042e9a92fSRobert Love EXPORT_SYMBOL(fc_linkdown); 58142e9a92fSRobert Love 58242e9a92fSRobert Love /** 58334f42a07SRobert Love * fc_fabric_logoff() - Logout of the fabric 58442e9a92fSRobert Love * @lport: fc_lport pointer to logoff the fabric 58542e9a92fSRobert Love * 58642e9a92fSRobert Love * Return value: 58742e9a92fSRobert Love * 0 for success, -1 for failure 58834f42a07SRobert Love */ 58942e9a92fSRobert Love int fc_fabric_logoff(struct fc_lport *lport) 59042e9a92fSRobert Love { 59142e9a92fSRobert Love lport->tt.disc_stop_final(lport); 59242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 593a0fd2e49SAbhijeet Joglekar if (lport->dns_rp) 594a0fd2e49SAbhijeet Joglekar lport->tt.rport_logoff(lport->dns_rp); 595a0fd2e49SAbhijeet Joglekar mutex_unlock(&lport->lp_mutex); 596a0fd2e49SAbhijeet Joglekar lport->tt.rport_flush_queue(); 597a0fd2e49SAbhijeet Joglekar mutex_lock(&lport->lp_mutex); 59842e9a92fSRobert Love fc_lport_enter_logo(lport); 59942e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 600f7db2c15SSteve Ma cancel_delayed_work_sync(&lport->retry_work); 60142e9a92fSRobert Love return 0; 60242e9a92fSRobert Love } 60342e9a92fSRobert Love EXPORT_SYMBOL(fc_fabric_logoff); 60442e9a92fSRobert Love 60542e9a92fSRobert Love /** 60634f42a07SRobert Love * fc_lport_destroy() - unregister a fc_lport 60742e9a92fSRobert Love * @lport: fc_lport pointer to unregister 60842e9a92fSRobert Love * 60942e9a92fSRobert Love * Return value: 61042e9a92fSRobert Love * None 61142e9a92fSRobert Love * Note: 61242e9a92fSRobert Love * exit routine for fc_lport instance 61342e9a92fSRobert Love * clean-up all the allocated memory 61442e9a92fSRobert Love * and free up other system resources. 61542e9a92fSRobert Love * 61634f42a07SRobert Love */ 61742e9a92fSRobert Love int fc_lport_destroy(struct fc_lport *lport) 61842e9a92fSRobert Love { 619bbf15669SAbhijeet Joglekar mutex_lock(&lport->lp_mutex); 620b1d9fd55SJoe Eykholt lport->state = LPORT_ST_DISABLED; 621bbf15669SAbhijeet Joglekar lport->link_up = 0; 62242e9a92fSRobert Love lport->tt.frame_send = fc_frame_drop; 623bbf15669SAbhijeet Joglekar mutex_unlock(&lport->lp_mutex); 624bbf15669SAbhijeet Joglekar 62542e9a92fSRobert Love lport->tt.fcp_abort_io(lport); 626e9ba8b42SJoe Eykholt lport->tt.disc_stop_final(lport); 6271f6ff364SAbhijeet Joglekar lport->tt.exch_mgr_reset(lport, 0, 0); 62842e9a92fSRobert Love return 0; 62942e9a92fSRobert Love } 63042e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_destroy); 63142e9a92fSRobert Love 63242e9a92fSRobert Love /** 63334f42a07SRobert Love * fc_set_mfs() - sets up the mfs for the corresponding fc_lport 63442e9a92fSRobert Love * @lport: fc_lport pointer to unregister 63542e9a92fSRobert Love * @mfs: the new mfs for fc_lport 63642e9a92fSRobert Love * 63742e9a92fSRobert Love * Set mfs for the given fc_lport to the new mfs. 63842e9a92fSRobert Love * 63942e9a92fSRobert Love * Return: 0 for success 64034f42a07SRobert Love */ 64142e9a92fSRobert Love int fc_set_mfs(struct fc_lport *lport, u32 mfs) 64242e9a92fSRobert Love { 64342e9a92fSRobert Love unsigned int old_mfs; 64442e9a92fSRobert Love int rc = -EINVAL; 64542e9a92fSRobert Love 64642e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 64742e9a92fSRobert Love 64842e9a92fSRobert Love old_mfs = lport->mfs; 64942e9a92fSRobert Love 65042e9a92fSRobert Love if (mfs >= FC_MIN_MAX_FRAME) { 65142e9a92fSRobert Love mfs &= ~3; 65242e9a92fSRobert Love if (mfs > FC_MAX_FRAME) 65342e9a92fSRobert Love mfs = FC_MAX_FRAME; 65442e9a92fSRobert Love mfs -= sizeof(struct fc_frame_header); 65542e9a92fSRobert Love lport->mfs = mfs; 65642e9a92fSRobert Love rc = 0; 65742e9a92fSRobert Love } 65842e9a92fSRobert Love 65942e9a92fSRobert Love if (!rc && mfs < old_mfs) 66042e9a92fSRobert Love fc_lport_enter_reset(lport); 66142e9a92fSRobert Love 66242e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 66342e9a92fSRobert Love 66442e9a92fSRobert Love return rc; 66542e9a92fSRobert Love } 66642e9a92fSRobert Love EXPORT_SYMBOL(fc_set_mfs); 66742e9a92fSRobert Love 66842e9a92fSRobert Love /** 66934f42a07SRobert Love * fc_lport_disc_callback() - Callback for discovery events 67042e9a92fSRobert Love * @lport: FC local port 67142e9a92fSRobert Love * @event: The discovery event 67242e9a92fSRobert Love */ 67342e9a92fSRobert Love void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event) 67442e9a92fSRobert Love { 67542e9a92fSRobert Love switch (event) { 67642e9a92fSRobert Love case DISC_EV_SUCCESS: 6777414705eSRobert Love FC_LPORT_DBG(lport, "Discovery succeeded\n"); 67842e9a92fSRobert Love break; 67942e9a92fSRobert Love case DISC_EV_FAILED: 6807414705eSRobert Love printk(KERN_ERR "libfc: Discovery failed for port (%6x)\n", 68142e9a92fSRobert Love fc_host_port_id(lport->host)); 68242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 68342e9a92fSRobert Love fc_lport_enter_reset(lport); 68442e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 68542e9a92fSRobert Love break; 68642e9a92fSRobert Love case DISC_EV_NONE: 68742e9a92fSRobert Love WARN_ON(1); 68842e9a92fSRobert Love break; 68942e9a92fSRobert Love } 69042e9a92fSRobert Love } 69142e9a92fSRobert Love 69242e9a92fSRobert Love /** 69334f42a07SRobert Love * fc_rport_enter_ready() - Enter the ready state and start discovery 69442e9a92fSRobert Love * @lport: Fibre Channel local port that is ready 69542e9a92fSRobert Love * 69642e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 69742e9a92fSRobert Love * this routine. 69842e9a92fSRobert Love */ 69942e9a92fSRobert Love static void fc_lport_enter_ready(struct fc_lport *lport) 70042e9a92fSRobert Love { 7017414705eSRobert Love FC_LPORT_DBG(lport, "Entered READY from state %s\n", 7027414705eSRobert Love fc_lport_state(lport)); 70342e9a92fSRobert Love 70442e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_READY); 70542e9a92fSRobert Love 70629d898e9SJoe Eykholt if (!lport->ptp_rp) 70742e9a92fSRobert Love lport->tt.disc_start(fc_lport_disc_callback, lport); 70842e9a92fSRobert Love } 70942e9a92fSRobert Love 71042e9a92fSRobert Love /** 71134f42a07SRobert Love * fc_lport_recv_flogi_req() - Receive a FLOGI request 71242e9a92fSRobert Love * @sp_in: The sequence the FLOGI is on 71342e9a92fSRobert Love * @rx_fp: The frame the FLOGI is in 71442e9a92fSRobert Love * @lport: The lport that recieved the request 71542e9a92fSRobert Love * 71642e9a92fSRobert Love * A received FLOGI request indicates a point-to-point connection. 71742e9a92fSRobert Love * Accept it with the common service parameters indicating our N port. 71842e9a92fSRobert Love * Set up to do a PLOGI if we have the higher-number WWPN. 71942e9a92fSRobert Love * 72042e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 72142e9a92fSRobert Love * this function. 72242e9a92fSRobert Love */ 72342e9a92fSRobert Love static void fc_lport_recv_flogi_req(struct fc_seq *sp_in, 72442e9a92fSRobert Love struct fc_frame *rx_fp, 72542e9a92fSRobert Love struct fc_lport *lport) 72642e9a92fSRobert Love { 72742e9a92fSRobert Love struct fc_frame *fp; 72842e9a92fSRobert Love struct fc_frame_header *fh; 72942e9a92fSRobert Love struct fc_seq *sp; 73042e9a92fSRobert Love struct fc_exch *ep; 73142e9a92fSRobert Love struct fc_els_flogi *flp; 73242e9a92fSRobert Love struct fc_els_flogi *new_flp; 73342e9a92fSRobert Love u64 remote_wwpn; 73442e9a92fSRobert Love u32 remote_fid; 73542e9a92fSRobert Love u32 local_fid; 73642e9a92fSRobert Love u32 f_ctl; 73742e9a92fSRobert Love 7387414705eSRobert Love FC_LPORT_DBG(lport, "Received FLOGI request while in state %s\n", 73942e9a92fSRobert Love fc_lport_state(lport)); 74042e9a92fSRobert Love 74142e9a92fSRobert Love fh = fc_frame_header_get(rx_fp); 74242e9a92fSRobert Love remote_fid = ntoh24(fh->fh_s_id); 74342e9a92fSRobert Love flp = fc_frame_payload_get(rx_fp, sizeof(*flp)); 74442e9a92fSRobert Love if (!flp) 74542e9a92fSRobert Love goto out; 74642e9a92fSRobert Love remote_wwpn = get_unaligned_be64(&flp->fl_wwpn); 74742e9a92fSRobert Love if (remote_wwpn == lport->wwpn) { 7487414705eSRobert Love printk(KERN_WARNING "libfc: Received FLOGI from port " 7497414705eSRobert Love "with same WWPN %llx\n", remote_wwpn); 75042e9a92fSRobert Love goto out; 75142e9a92fSRobert Love } 7527414705eSRobert Love FC_LPORT_DBG(lport, "FLOGI from port WWPN %llx\n", remote_wwpn); 75342e9a92fSRobert Love 75442e9a92fSRobert Love /* 75542e9a92fSRobert Love * XXX what is the right thing to do for FIDs? 75642e9a92fSRobert Love * The originator might expect our S_ID to be 0xfffffe. 75742e9a92fSRobert Love * But if so, both of us could end up with the same FID. 75842e9a92fSRobert Love */ 75942e9a92fSRobert Love local_fid = FC_LOCAL_PTP_FID_LO; 76042e9a92fSRobert Love if (remote_wwpn < lport->wwpn) { 76142e9a92fSRobert Love local_fid = FC_LOCAL_PTP_FID_HI; 76242e9a92fSRobert Love if (!remote_fid || remote_fid == local_fid) 76342e9a92fSRobert Love remote_fid = FC_LOCAL_PTP_FID_LO; 76442e9a92fSRobert Love } else if (!remote_fid) { 76542e9a92fSRobert Love remote_fid = FC_LOCAL_PTP_FID_HI; 76642e9a92fSRobert Love } 76742e9a92fSRobert Love 76842e9a92fSRobert Love fc_host_port_id(lport->host) = local_fid; 76942e9a92fSRobert Love 77042e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(*flp)); 77142e9a92fSRobert Love if (fp) { 77242e9a92fSRobert Love sp = lport->tt.seq_start_next(fr_seq(rx_fp)); 77342e9a92fSRobert Love new_flp = fc_frame_payload_get(fp, sizeof(*flp)); 77442e9a92fSRobert Love fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI); 77542e9a92fSRobert Love new_flp->fl_cmd = (u8) ELS_LS_ACC; 77642e9a92fSRobert Love 77742e9a92fSRobert Love /* 77842e9a92fSRobert Love * Send the response. If this fails, the originator should 77942e9a92fSRobert Love * repeat the sequence. 78042e9a92fSRobert Love */ 78142e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; 78242e9a92fSRobert Love ep = fc_seq_exch(sp); 78342e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 78442e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 78542e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 78642e9a92fSRobert Love 78742e9a92fSRobert Love } else { 78842e9a92fSRobert Love fc_lport_error(lport, fp); 78942e9a92fSRobert Love } 79042e9a92fSRobert Love fc_lport_ptp_setup(lport, remote_fid, remote_wwpn, 79142e9a92fSRobert Love get_unaligned_be64(&flp->fl_wwnn)); 79242e9a92fSRobert Love 79342e9a92fSRobert Love out: 79442e9a92fSRobert Love sp = fr_seq(rx_fp); 79542e9a92fSRobert Love fc_frame_free(rx_fp); 79642e9a92fSRobert Love } 79742e9a92fSRobert Love 79842e9a92fSRobert Love /** 79934f42a07SRobert Love * fc_lport_recv_req() - The generic lport request handler 80042e9a92fSRobert Love * @lport: The lport that received the request 80142e9a92fSRobert Love * @sp: The sequence the request is on 80242e9a92fSRobert Love * @fp: The frame the request is in 80342e9a92fSRobert Love * 80442e9a92fSRobert Love * This function will see if the lport handles the request or 80542e9a92fSRobert Love * if an rport should handle the request. 80642e9a92fSRobert Love * 80742e9a92fSRobert Love * Locking Note: This function should not be called with the lport 80842e9a92fSRobert Love * lock held becuase it will grab the lock. 80942e9a92fSRobert Love */ 81042e9a92fSRobert Love static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp, 81142e9a92fSRobert Love struct fc_frame *fp) 81242e9a92fSRobert Love { 81342e9a92fSRobert Love struct fc_frame_header *fh = fc_frame_header_get(fp); 81442e9a92fSRobert Love void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *); 81542e9a92fSRobert Love 81642e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 81742e9a92fSRobert Love 81842e9a92fSRobert Love /* 81942e9a92fSRobert Love * Handle special ELS cases like FLOGI, LOGO, and 82042e9a92fSRobert Love * RSCN here. These don't require a session. 82142e9a92fSRobert Love * Even if we had a session, it might not be ready. 82242e9a92fSRobert Love */ 823e9ba8b42SJoe Eykholt if (!lport->link_up) 824e9ba8b42SJoe Eykholt fc_frame_free(fp); 825e9ba8b42SJoe Eykholt else if (fh->fh_type == FC_TYPE_ELS && 826e9ba8b42SJoe Eykholt fh->fh_r_ctl == FC_RCTL_ELS_REQ) { 82742e9a92fSRobert Love /* 82842e9a92fSRobert Love * Check opcode. 82942e9a92fSRobert Love */ 830131203a1SJoe Eykholt recv = lport->tt.rport_recv_req; 83142e9a92fSRobert Love switch (fc_frame_payload_op(fp)) { 83242e9a92fSRobert Love case ELS_FLOGI: 83342e9a92fSRobert Love recv = fc_lport_recv_flogi_req; 83442e9a92fSRobert Love break; 83542e9a92fSRobert Love case ELS_LOGO: 83642e9a92fSRobert Love fh = fc_frame_header_get(fp); 83742e9a92fSRobert Love if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) 83842e9a92fSRobert Love recv = fc_lport_recv_logo_req; 83942e9a92fSRobert Love break; 84042e9a92fSRobert Love case ELS_RSCN: 84142e9a92fSRobert Love recv = lport->tt.disc_recv_req; 84242e9a92fSRobert Love break; 84342e9a92fSRobert Love case ELS_ECHO: 84442e9a92fSRobert Love recv = fc_lport_recv_echo_req; 84542e9a92fSRobert Love break; 84642e9a92fSRobert Love case ELS_RLIR: 84742e9a92fSRobert Love recv = fc_lport_recv_rlir_req; 84842e9a92fSRobert Love break; 84942e9a92fSRobert Love case ELS_RNID: 85042e9a92fSRobert Love recv = fc_lport_recv_rnid_req; 85142e9a92fSRobert Love break; 85242e9a92fSRobert Love case ELS_ADISC: 85342e9a92fSRobert Love recv = fc_lport_recv_adisc_req; 85442e9a92fSRobert Love break; 85542e9a92fSRobert Love } 85642e9a92fSRobert Love 85742e9a92fSRobert Love recv(sp, fp, lport); 85842e9a92fSRobert Love } else { 8597414705eSRobert Love FC_LPORT_DBG(lport, "dropping invalid frame (eof %x)\n", 8607414705eSRobert Love fr_eof(fp)); 86142e9a92fSRobert Love fc_frame_free(fp); 86242e9a92fSRobert Love } 86342e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 86442e9a92fSRobert Love 86542e9a92fSRobert Love /* 86642e9a92fSRobert Love * The common exch_done for all request may not be good 86742e9a92fSRobert Love * if any request requires longer hold on exhange. XXX 86842e9a92fSRobert Love */ 86942e9a92fSRobert Love lport->tt.exch_done(sp); 87042e9a92fSRobert Love } 87142e9a92fSRobert Love 87242e9a92fSRobert Love /** 87334f42a07SRobert Love * fc_lport_reset() - Reset an lport 87442e9a92fSRobert Love * @lport: The lport which should be reset 87542e9a92fSRobert Love * 87642e9a92fSRobert Love * Locking Note: This functions should not be called with the 87742e9a92fSRobert Love * lport lock held. 87842e9a92fSRobert Love */ 87942e9a92fSRobert Love int fc_lport_reset(struct fc_lport *lport) 88042e9a92fSRobert Love { 881f7db2c15SSteve Ma cancel_delayed_work_sync(&lport->retry_work); 88242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 88342e9a92fSRobert Love fc_lport_enter_reset(lport); 88442e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 88542e9a92fSRobert Love return 0; 88642e9a92fSRobert Love } 88742e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_reset); 88842e9a92fSRobert Love 88942e9a92fSRobert Love /** 8901190d925SJoe Eykholt * fc_lport_reset_locked() - Reset the local port 89142e9a92fSRobert Love * @lport: Fibre Channel local port to be reset 89242e9a92fSRobert Love * 89342e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 89442e9a92fSRobert Love * this routine. 89542e9a92fSRobert Love */ 8961190d925SJoe Eykholt static void fc_lport_reset_locked(struct fc_lport *lport) 89742e9a92fSRobert Love { 89842e9a92fSRobert Love if (lport->dns_rp) 89942e9a92fSRobert Love lport->tt.rport_logoff(lport->dns_rp); 90042e9a92fSRobert Love 90142e9a92fSRobert Love lport->ptp_rp = NULL; 90242e9a92fSRobert Love 90342e9a92fSRobert Love lport->tt.disc_stop(lport); 90442e9a92fSRobert Love 9051f6ff364SAbhijeet Joglekar lport->tt.exch_mgr_reset(lport, 0, 0); 90642e9a92fSRobert Love fc_host_fabric_name(lport->host) = 0; 90742e9a92fSRobert Love fc_host_port_id(lport->host) = 0; 9081190d925SJoe Eykholt } 90942e9a92fSRobert Love 9101190d925SJoe Eykholt /** 9111190d925SJoe Eykholt * fc_lport_enter_reset() - Reset the local port 9121190d925SJoe Eykholt * @lport: Fibre Channel local port to be reset 9131190d925SJoe Eykholt * 9141190d925SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 9151190d925SJoe Eykholt * this routine. 9161190d925SJoe Eykholt */ 9171190d925SJoe Eykholt static void fc_lport_enter_reset(struct fc_lport *lport) 9181190d925SJoe Eykholt { 9191190d925SJoe Eykholt FC_LPORT_DBG(lport, "Entered RESET state from %s state\n", 9201190d925SJoe Eykholt fc_lport_state(lport)); 9211190d925SJoe Eykholt 9221190d925SJoe Eykholt fc_lport_state_enter(lport, LPORT_ST_RESET); 9231190d925SJoe Eykholt fc_lport_reset_locked(lport); 924bc0e17f6SVasu Dev if (lport->link_up) 92542e9a92fSRobert Love fc_lport_enter_flogi(lport); 92642e9a92fSRobert Love } 92742e9a92fSRobert Love 92842e9a92fSRobert Love /** 9291190d925SJoe Eykholt * fc_lport_enter_disabled() - disable the local port 9301190d925SJoe Eykholt * @lport: Fibre Channel local port to be reset 9311190d925SJoe Eykholt * 9321190d925SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 9331190d925SJoe Eykholt * this routine. 9341190d925SJoe Eykholt */ 9351190d925SJoe Eykholt static void fc_lport_enter_disabled(struct fc_lport *lport) 9361190d925SJoe Eykholt { 9371190d925SJoe Eykholt FC_LPORT_DBG(lport, "Entered disabled state from %s state\n", 9381190d925SJoe Eykholt fc_lport_state(lport)); 9391190d925SJoe Eykholt 9401190d925SJoe Eykholt fc_lport_state_enter(lport, LPORT_ST_DISABLED); 9411190d925SJoe Eykholt fc_lport_reset_locked(lport); 9421190d925SJoe Eykholt } 9431190d925SJoe Eykholt 9441190d925SJoe Eykholt /** 94534f42a07SRobert Love * fc_lport_error() - Handler for any errors 94642e9a92fSRobert Love * @lport: The fc_lport object 94742e9a92fSRobert Love * @fp: The frame pointer 94842e9a92fSRobert Love * 94942e9a92fSRobert Love * If the error was caused by a resource allocation failure 95042e9a92fSRobert Love * then wait for half a second and retry, otherwise retry 95142e9a92fSRobert Love * after the e_d_tov time. 95242e9a92fSRobert Love */ 95342e9a92fSRobert Love static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp) 95442e9a92fSRobert Love { 95542e9a92fSRobert Love unsigned long delay = 0; 9567414705eSRobert Love FC_LPORT_DBG(lport, "Error %ld in state %s, retries %d\n", 95742e9a92fSRobert Love PTR_ERR(fp), fc_lport_state(lport), 95842e9a92fSRobert Love lport->retry_count); 95942e9a92fSRobert Love 96042e9a92fSRobert Love if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) { 96142e9a92fSRobert Love /* 96242e9a92fSRobert Love * Memory allocation failure, or the exchange timed out. 96342e9a92fSRobert Love * Retry after delay 96442e9a92fSRobert Love */ 96542e9a92fSRobert Love if (lport->retry_count < lport->max_retry_count) { 96642e9a92fSRobert Love lport->retry_count++; 96742e9a92fSRobert Love if (!fp) 96842e9a92fSRobert Love delay = msecs_to_jiffies(500); 96942e9a92fSRobert Love else 97042e9a92fSRobert Love delay = msecs_to_jiffies(lport->e_d_tov); 97142e9a92fSRobert Love 97242e9a92fSRobert Love schedule_delayed_work(&lport->retry_work, delay); 97342e9a92fSRobert Love } else { 97442e9a92fSRobert Love switch (lport->state) { 975b1d9fd55SJoe Eykholt case LPORT_ST_DISABLED: 97642e9a92fSRobert Love case LPORT_ST_READY: 97742e9a92fSRobert Love case LPORT_ST_RESET: 97842e9a92fSRobert Love case LPORT_ST_RPN_ID: 97942e9a92fSRobert Love case LPORT_ST_RFT_ID: 98042e9a92fSRobert Love case LPORT_ST_SCR: 98142e9a92fSRobert Love case LPORT_ST_DNS: 98242e9a92fSRobert Love case LPORT_ST_FLOGI: 98342e9a92fSRobert Love case LPORT_ST_LOGO: 98442e9a92fSRobert Love fc_lport_enter_reset(lport); 98542e9a92fSRobert Love break; 98642e9a92fSRobert Love } 98742e9a92fSRobert Love } 98842e9a92fSRobert Love } 98942e9a92fSRobert Love } 99042e9a92fSRobert Love 99142e9a92fSRobert Love /** 99234f42a07SRobert Love * fc_lport_rft_id_resp() - Handle response to Register Fibre 99342e9a92fSRobert Love * Channel Types by ID (RPN_ID) request 99442e9a92fSRobert Love * @sp: current sequence in RPN_ID exchange 99542e9a92fSRobert Love * @fp: response frame 99642e9a92fSRobert Love * @lp_arg: Fibre Channel host port instance 99742e9a92fSRobert Love * 99842e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 99942e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 100042e9a92fSRobert Love * and then unlock the lport. 100142e9a92fSRobert Love */ 100242e9a92fSRobert Love static void fc_lport_rft_id_resp(struct fc_seq *sp, struct fc_frame *fp, 100342e9a92fSRobert Love void *lp_arg) 100442e9a92fSRobert Love { 100542e9a92fSRobert Love struct fc_lport *lport = lp_arg; 100642e9a92fSRobert Love struct fc_frame_header *fh; 100742e9a92fSRobert Love struct fc_ct_hdr *ct; 100842e9a92fSRobert Love 1009f657d299SJoe Eykholt FC_LPORT_DBG(lport, "Received a RFT_ID %s\n", fc_els_resp_type(fp)); 1010f657d299SJoe Eykholt 101142e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 101242e9a92fSRobert Love return; 101342e9a92fSRobert Love 101442e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 101542e9a92fSRobert Love 101642e9a92fSRobert Love if (lport->state != LPORT_ST_RFT_ID) { 10177414705eSRobert Love FC_LPORT_DBG(lport, "Received a RFT_ID response, but in state " 10187414705eSRobert Love "%s\n", fc_lport_state(lport)); 101976f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 102076f6804eSAbhijeet Joglekar goto err; 102142e9a92fSRobert Love goto out; 102242e9a92fSRobert Love } 102342e9a92fSRobert Love 102476f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 102576f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 102676f6804eSAbhijeet Joglekar goto err; 102776f6804eSAbhijeet Joglekar } 102876f6804eSAbhijeet Joglekar 102942e9a92fSRobert Love fh = fc_frame_header_get(fp); 103042e9a92fSRobert Love ct = fc_frame_payload_get(fp, sizeof(*ct)); 103142e9a92fSRobert Love 103242e9a92fSRobert Love if (fh && ct && fh->fh_type == FC_TYPE_CT && 103342e9a92fSRobert Love ct->ct_fs_type == FC_FST_DIR && 103442e9a92fSRobert Love ct->ct_fs_subtype == FC_NS_SUBTYPE && 103542e9a92fSRobert Love ntohs(ct->ct_cmd) == FC_FS_ACC) 103642e9a92fSRobert Love fc_lport_enter_scr(lport); 103742e9a92fSRobert Love else 103842e9a92fSRobert Love fc_lport_error(lport, fp); 103942e9a92fSRobert Love out: 104042e9a92fSRobert Love fc_frame_free(fp); 104142e9a92fSRobert Love err: 104242e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 104342e9a92fSRobert Love } 104442e9a92fSRobert Love 104542e9a92fSRobert Love /** 104634f42a07SRobert Love * fc_lport_rpn_id_resp() - Handle response to Register Port 104742e9a92fSRobert Love * Name by ID (RPN_ID) request 104842e9a92fSRobert Love * @sp: current sequence in RPN_ID exchange 104942e9a92fSRobert Love * @fp: response frame 105042e9a92fSRobert Love * @lp_arg: Fibre Channel host port instance 105142e9a92fSRobert Love * 105242e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 105342e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 105442e9a92fSRobert Love * and then unlock the lport. 105542e9a92fSRobert Love */ 105642e9a92fSRobert Love static void fc_lport_rpn_id_resp(struct fc_seq *sp, struct fc_frame *fp, 105742e9a92fSRobert Love void *lp_arg) 105842e9a92fSRobert Love { 105942e9a92fSRobert Love struct fc_lport *lport = lp_arg; 106042e9a92fSRobert Love struct fc_frame_header *fh; 106142e9a92fSRobert Love struct fc_ct_hdr *ct; 106242e9a92fSRobert Love 1063f657d299SJoe Eykholt FC_LPORT_DBG(lport, "Received a RPN_ID %s\n", fc_els_resp_type(fp)); 1064f657d299SJoe Eykholt 106542e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 106642e9a92fSRobert Love return; 106742e9a92fSRobert Love 106842e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 106942e9a92fSRobert Love 107042e9a92fSRobert Love if (lport->state != LPORT_ST_RPN_ID) { 10717414705eSRobert Love FC_LPORT_DBG(lport, "Received a RPN_ID response, but in state " 10727414705eSRobert Love "%s\n", fc_lport_state(lport)); 107376f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 107476f6804eSAbhijeet Joglekar goto err; 107542e9a92fSRobert Love goto out; 107642e9a92fSRobert Love } 107742e9a92fSRobert Love 107876f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 107976f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 108076f6804eSAbhijeet Joglekar goto err; 108176f6804eSAbhijeet Joglekar } 108276f6804eSAbhijeet Joglekar 108342e9a92fSRobert Love fh = fc_frame_header_get(fp); 108442e9a92fSRobert Love ct = fc_frame_payload_get(fp, sizeof(*ct)); 108542e9a92fSRobert Love if (fh && ct && fh->fh_type == FC_TYPE_CT && 108642e9a92fSRobert Love ct->ct_fs_type == FC_FST_DIR && 108742e9a92fSRobert Love ct->ct_fs_subtype == FC_NS_SUBTYPE && 108842e9a92fSRobert Love ntohs(ct->ct_cmd) == FC_FS_ACC) 108942e9a92fSRobert Love fc_lport_enter_rft_id(lport); 109042e9a92fSRobert Love else 109142e9a92fSRobert Love fc_lport_error(lport, fp); 109242e9a92fSRobert Love 109342e9a92fSRobert Love out: 109442e9a92fSRobert Love fc_frame_free(fp); 109542e9a92fSRobert Love err: 109642e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 109742e9a92fSRobert Love } 109842e9a92fSRobert Love 109942e9a92fSRobert Love /** 110034f42a07SRobert Love * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request 110142e9a92fSRobert Love * @sp: current sequence in SCR exchange 110242e9a92fSRobert Love * @fp: response frame 110342e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the registration request 110442e9a92fSRobert Love * 110542e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 110642e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 110742e9a92fSRobert Love * and then unlock the lport. 110842e9a92fSRobert Love */ 110942e9a92fSRobert Love static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp, 111042e9a92fSRobert Love void *lp_arg) 111142e9a92fSRobert Love { 111242e9a92fSRobert Love struct fc_lport *lport = lp_arg; 111342e9a92fSRobert Love u8 op; 111442e9a92fSRobert Love 1115f657d299SJoe Eykholt FC_LPORT_DBG(lport, "Received a SCR %s\n", fc_els_resp_type(fp)); 1116f657d299SJoe Eykholt 111742e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 111842e9a92fSRobert Love return; 111942e9a92fSRobert Love 112042e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 112142e9a92fSRobert Love 112242e9a92fSRobert Love if (lport->state != LPORT_ST_SCR) { 11237414705eSRobert Love FC_LPORT_DBG(lport, "Received a SCR response, but in state " 11247414705eSRobert Love "%s\n", fc_lport_state(lport)); 112576f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 112676f6804eSAbhijeet Joglekar goto err; 112742e9a92fSRobert Love goto out; 112842e9a92fSRobert Love } 112942e9a92fSRobert Love 113076f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 113176f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 113276f6804eSAbhijeet Joglekar goto err; 113376f6804eSAbhijeet Joglekar } 113476f6804eSAbhijeet Joglekar 113542e9a92fSRobert Love op = fc_frame_payload_op(fp); 113642e9a92fSRobert Love if (op == ELS_LS_ACC) 113742e9a92fSRobert Love fc_lport_enter_ready(lport); 113842e9a92fSRobert Love else 113942e9a92fSRobert Love fc_lport_error(lport, fp); 114042e9a92fSRobert Love 114142e9a92fSRobert Love out: 114242e9a92fSRobert Love fc_frame_free(fp); 114342e9a92fSRobert Love err: 114442e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 114542e9a92fSRobert Love } 114642e9a92fSRobert Love 114742e9a92fSRobert Love /** 114834f42a07SRobert Love * fc_lport_enter_scr() - Send a State Change Register (SCR) request 114942e9a92fSRobert Love * @lport: Fibre Channel local port to register for state changes 115042e9a92fSRobert Love * 115142e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 115242e9a92fSRobert Love * this routine. 115342e9a92fSRobert Love */ 115442e9a92fSRobert Love static void fc_lport_enter_scr(struct fc_lport *lport) 115542e9a92fSRobert Love { 115642e9a92fSRobert Love struct fc_frame *fp; 115742e9a92fSRobert Love 11587414705eSRobert Love FC_LPORT_DBG(lport, "Entered SCR state from %s state\n", 11597414705eSRobert Love fc_lport_state(lport)); 116042e9a92fSRobert Love 116142e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_SCR); 116242e9a92fSRobert Love 116342e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr)); 116442e9a92fSRobert Love if (!fp) { 116542e9a92fSRobert Love fc_lport_error(lport, fp); 116642e9a92fSRobert Love return; 116742e9a92fSRobert Love } 116842e9a92fSRobert Love 1169a46f327aSJoe Eykholt if (!lport->tt.elsct_send(lport, FC_FID_FCTRL, fp, ELS_SCR, 117042e9a92fSRobert Love fc_lport_scr_resp, lport, lport->e_d_tov)) 117142e9a92fSRobert Love fc_lport_error(lport, fp); 117242e9a92fSRobert Love } 117342e9a92fSRobert Love 117442e9a92fSRobert Love /** 117534f42a07SRobert Love * fc_lport_enter_rft_id() - Register FC4-types with the name server 117642e9a92fSRobert Love * @lport: Fibre Channel local port to register 117742e9a92fSRobert Love * 117842e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 117942e9a92fSRobert Love * this routine. 118042e9a92fSRobert Love */ 118142e9a92fSRobert Love static void fc_lport_enter_rft_id(struct fc_lport *lport) 118242e9a92fSRobert Love { 118342e9a92fSRobert Love struct fc_frame *fp; 118442e9a92fSRobert Love struct fc_ns_fts *lps; 118542e9a92fSRobert Love int i; 118642e9a92fSRobert Love 11877414705eSRobert Love FC_LPORT_DBG(lport, "Entered RFT_ID state from %s state\n", 11887414705eSRobert Love fc_lport_state(lport)); 118942e9a92fSRobert Love 119042e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_RFT_ID); 119142e9a92fSRobert Love 119242e9a92fSRobert Love lps = &lport->fcts; 119342e9a92fSRobert Love i = sizeof(lps->ff_type_map) / sizeof(lps->ff_type_map[0]); 119442e9a92fSRobert Love while (--i >= 0) 119542e9a92fSRobert Love if (ntohl(lps->ff_type_map[i]) != 0) 119642e9a92fSRobert Love break; 119742e9a92fSRobert Love if (i < 0) { 119842e9a92fSRobert Love /* nothing to register, move on to SCR */ 119942e9a92fSRobert Love fc_lport_enter_scr(lport); 120042e9a92fSRobert Love return; 120142e9a92fSRobert Love } 120242e9a92fSRobert Love 120342e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + 120442e9a92fSRobert Love sizeof(struct fc_ns_rft)); 120542e9a92fSRobert Love if (!fp) { 120642e9a92fSRobert Love fc_lport_error(lport, fp); 120742e9a92fSRobert Love return; 120842e9a92fSRobert Love } 120942e9a92fSRobert Love 1210a46f327aSJoe Eykholt if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RFT_ID, 121142e9a92fSRobert Love fc_lport_rft_id_resp, 121242e9a92fSRobert Love lport, lport->e_d_tov)) 121342e9a92fSRobert Love fc_lport_error(lport, fp); 121442e9a92fSRobert Love } 121542e9a92fSRobert Love 121642e9a92fSRobert Love /** 121734f42a07SRobert Love * fc_rport_enter_rft_id() - Register port name with the name server 121842e9a92fSRobert Love * @lport: Fibre Channel local port to register 121942e9a92fSRobert Love * 122042e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 122142e9a92fSRobert Love * this routine. 122242e9a92fSRobert Love */ 122342e9a92fSRobert Love static void fc_lport_enter_rpn_id(struct fc_lport *lport) 122442e9a92fSRobert Love { 122542e9a92fSRobert Love struct fc_frame *fp; 122642e9a92fSRobert Love 12277414705eSRobert Love FC_LPORT_DBG(lport, "Entered RPN_ID state from %s state\n", 12287414705eSRobert Love fc_lport_state(lport)); 122942e9a92fSRobert Love 123042e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_RPN_ID); 123142e9a92fSRobert Love 123242e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + 123342e9a92fSRobert Love sizeof(struct fc_ns_rn_id)); 123442e9a92fSRobert Love if (!fp) { 123542e9a92fSRobert Love fc_lport_error(lport, fp); 123642e9a92fSRobert Love return; 123742e9a92fSRobert Love } 123842e9a92fSRobert Love 1239a46f327aSJoe Eykholt if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RPN_ID, 124042e9a92fSRobert Love fc_lport_rpn_id_resp, 124142e9a92fSRobert Love lport, lport->e_d_tov)) 124242e9a92fSRobert Love fc_lport_error(lport, fp); 124342e9a92fSRobert Love } 124442e9a92fSRobert Love 124542e9a92fSRobert Love static struct fc_rport_operations fc_lport_rport_ops = { 124642e9a92fSRobert Love .event_callback = fc_lport_rport_callback, 124742e9a92fSRobert Love }; 124842e9a92fSRobert Love 124942e9a92fSRobert Love /** 125034f42a07SRobert Love * fc_rport_enter_dns() - Create a rport to the name server 125142e9a92fSRobert Love * @lport: Fibre Channel local port requesting a rport for the name server 125242e9a92fSRobert Love * 125342e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 125442e9a92fSRobert Love * this routine. 125542e9a92fSRobert Love */ 125642e9a92fSRobert Love static void fc_lport_enter_dns(struct fc_lport *lport) 125742e9a92fSRobert Love { 1258ab28f1fdSJoe Eykholt struct fc_rport_priv *rdata; 125942e9a92fSRobert Love 12607414705eSRobert Love FC_LPORT_DBG(lport, "Entered DNS state from %s state\n", 12617414705eSRobert Love fc_lport_state(lport)); 126242e9a92fSRobert Love 126342e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_DNS); 126442e9a92fSRobert Love 126548f00902SJoe Eykholt mutex_lock(&lport->disc.disc_mutex); 12669737e6a7SRobert Love rdata = lport->tt.rport_create(lport, FC_FID_DIR_SERV); 126748f00902SJoe Eykholt mutex_unlock(&lport->disc.disc_mutex); 12689fb9d328SJoe Eykholt if (!rdata) 126942e9a92fSRobert Love goto err; 127042e9a92fSRobert Love 127142e9a92fSRobert Love rdata->ops = &fc_lport_rport_ops; 12729fb9d328SJoe Eykholt lport->tt.rport_login(rdata); 127342e9a92fSRobert Love return; 127442e9a92fSRobert Love 127542e9a92fSRobert Love err: 127642e9a92fSRobert Love fc_lport_error(lport, NULL); 127742e9a92fSRobert Love } 127842e9a92fSRobert Love 127942e9a92fSRobert Love /** 128034f42a07SRobert Love * fc_lport_timeout() - Handler for the retry_work timer. 128142e9a92fSRobert Love * @work: The work struct of the fc_lport 128242e9a92fSRobert Love */ 128342e9a92fSRobert Love static void fc_lport_timeout(struct work_struct *work) 128442e9a92fSRobert Love { 128542e9a92fSRobert Love struct fc_lport *lport = 128642e9a92fSRobert Love container_of(work, struct fc_lport, 128742e9a92fSRobert Love retry_work.work); 128842e9a92fSRobert Love 128942e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 129042e9a92fSRobert Love 129142e9a92fSRobert Love switch (lport->state) { 1292b1d9fd55SJoe Eykholt case LPORT_ST_DISABLED: 129342e9a92fSRobert Love case LPORT_ST_READY: 129442e9a92fSRobert Love case LPORT_ST_RESET: 129542e9a92fSRobert Love WARN_ON(1); 129642e9a92fSRobert Love break; 129742e9a92fSRobert Love case LPORT_ST_FLOGI: 129842e9a92fSRobert Love fc_lport_enter_flogi(lport); 129942e9a92fSRobert Love break; 130042e9a92fSRobert Love case LPORT_ST_DNS: 130142e9a92fSRobert Love fc_lport_enter_dns(lport); 130242e9a92fSRobert Love break; 130342e9a92fSRobert Love case LPORT_ST_RPN_ID: 130442e9a92fSRobert Love fc_lport_enter_rpn_id(lport); 130542e9a92fSRobert Love break; 130642e9a92fSRobert Love case LPORT_ST_RFT_ID: 130742e9a92fSRobert Love fc_lport_enter_rft_id(lport); 130842e9a92fSRobert Love break; 130942e9a92fSRobert Love case LPORT_ST_SCR: 131042e9a92fSRobert Love fc_lport_enter_scr(lport); 131142e9a92fSRobert Love break; 131242e9a92fSRobert Love case LPORT_ST_LOGO: 131342e9a92fSRobert Love fc_lport_enter_logo(lport); 131442e9a92fSRobert Love break; 131542e9a92fSRobert Love } 131642e9a92fSRobert Love 131742e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 131842e9a92fSRobert Love } 131942e9a92fSRobert Love 132042e9a92fSRobert Love /** 132134f42a07SRobert Love * fc_lport_logo_resp() - Handle response to LOGO request 132242e9a92fSRobert Love * @sp: current sequence in LOGO exchange 132342e9a92fSRobert Love * @fp: response frame 132442e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the LOGO request 132542e9a92fSRobert Love * 132642e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 132742e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 132842e9a92fSRobert Love * and then unlock the lport. 132942e9a92fSRobert Love */ 133042e9a92fSRobert Love static void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp, 133142e9a92fSRobert Love void *lp_arg) 133242e9a92fSRobert Love { 133342e9a92fSRobert Love struct fc_lport *lport = lp_arg; 133442e9a92fSRobert Love u8 op; 133542e9a92fSRobert Love 1336f657d299SJoe Eykholt FC_LPORT_DBG(lport, "Received a LOGO %s\n", fc_els_resp_type(fp)); 1337f657d299SJoe Eykholt 133842e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 133942e9a92fSRobert Love return; 134042e9a92fSRobert Love 134142e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 134242e9a92fSRobert Love 134342e9a92fSRobert Love if (lport->state != LPORT_ST_LOGO) { 13447414705eSRobert Love FC_LPORT_DBG(lport, "Received a LOGO response, but in state " 13457414705eSRobert Love "%s\n", fc_lport_state(lport)); 134676f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 134776f6804eSAbhijeet Joglekar goto err; 134842e9a92fSRobert Love goto out; 134942e9a92fSRobert Love } 135042e9a92fSRobert Love 135176f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 135276f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 135376f6804eSAbhijeet Joglekar goto err; 135476f6804eSAbhijeet Joglekar } 135576f6804eSAbhijeet Joglekar 135642e9a92fSRobert Love op = fc_frame_payload_op(fp); 135742e9a92fSRobert Love if (op == ELS_LS_ACC) 13581190d925SJoe Eykholt fc_lport_enter_disabled(lport); 135942e9a92fSRobert Love else 136042e9a92fSRobert Love fc_lport_error(lport, fp); 136142e9a92fSRobert Love 136242e9a92fSRobert Love out: 136342e9a92fSRobert Love fc_frame_free(fp); 136442e9a92fSRobert Love err: 136542e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 136642e9a92fSRobert Love } 136742e9a92fSRobert Love 136842e9a92fSRobert Love /** 136934f42a07SRobert Love * fc_rport_enter_logo() - Logout of the fabric 137042e9a92fSRobert Love * @lport: Fibre Channel local port to be logged out 137142e9a92fSRobert Love * 137242e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 137342e9a92fSRobert Love * this routine. 137442e9a92fSRobert Love */ 137542e9a92fSRobert Love static void fc_lport_enter_logo(struct fc_lport *lport) 137642e9a92fSRobert Love { 137742e9a92fSRobert Love struct fc_frame *fp; 137842e9a92fSRobert Love struct fc_els_logo *logo; 137942e9a92fSRobert Love 13807414705eSRobert Love FC_LPORT_DBG(lport, "Entered LOGO state from %s state\n", 13817414705eSRobert Love fc_lport_state(lport)); 138242e9a92fSRobert Love 138342e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_LOGO); 138442e9a92fSRobert Love 138542e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(*logo)); 138642e9a92fSRobert Love if (!fp) { 138742e9a92fSRobert Love fc_lport_error(lport, fp); 138842e9a92fSRobert Love return; 138942e9a92fSRobert Love } 139042e9a92fSRobert Love 1391a46f327aSJoe Eykholt if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, ELS_LOGO, 1392a46f327aSJoe Eykholt fc_lport_logo_resp, lport, lport->e_d_tov)) 139342e9a92fSRobert Love fc_lport_error(lport, fp); 139442e9a92fSRobert Love } 139542e9a92fSRobert Love 139642e9a92fSRobert Love /** 139734f42a07SRobert Love * fc_lport_flogi_resp() - Handle response to FLOGI request 139842e9a92fSRobert Love * @sp: current sequence in FLOGI exchange 139942e9a92fSRobert Love * @fp: response frame 140042e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the FLOGI request 140142e9a92fSRobert Love * 140242e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 140342e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 140442e9a92fSRobert Love * and then unlock the lport. 140542e9a92fSRobert Love */ 140642e9a92fSRobert Love static void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, 140742e9a92fSRobert Love void *lp_arg) 140842e9a92fSRobert Love { 140942e9a92fSRobert Love struct fc_lport *lport = lp_arg; 141042e9a92fSRobert Love struct fc_frame_header *fh; 141142e9a92fSRobert Love struct fc_els_flogi *flp; 141242e9a92fSRobert Love u32 did; 141342e9a92fSRobert Love u16 csp_flags; 141442e9a92fSRobert Love unsigned int r_a_tov; 141542e9a92fSRobert Love unsigned int e_d_tov; 141642e9a92fSRobert Love u16 mfs; 141742e9a92fSRobert Love 1418f657d299SJoe Eykholt FC_LPORT_DBG(lport, "Received a FLOGI %s\n", fc_els_resp_type(fp)); 1419f657d299SJoe Eykholt 142042e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 142142e9a92fSRobert Love return; 142242e9a92fSRobert Love 142342e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 142442e9a92fSRobert Love 142542e9a92fSRobert Love if (lport->state != LPORT_ST_FLOGI) { 14267414705eSRobert Love FC_LPORT_DBG(lport, "Received a FLOGI response, but in state " 14277414705eSRobert Love "%s\n", fc_lport_state(lport)); 142876f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 142976f6804eSAbhijeet Joglekar goto err; 143042e9a92fSRobert Love goto out; 143142e9a92fSRobert Love } 143242e9a92fSRobert Love 143376f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 143476f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 143576f6804eSAbhijeet Joglekar goto err; 143676f6804eSAbhijeet Joglekar } 143776f6804eSAbhijeet Joglekar 143842e9a92fSRobert Love fh = fc_frame_header_get(fp); 143942e9a92fSRobert Love did = ntoh24(fh->fh_d_id); 144042e9a92fSRobert Love if (fc_frame_payload_op(fp) == ELS_LS_ACC && did != 0) { 144142e9a92fSRobert Love 14427414705eSRobert Love printk(KERN_INFO "libfc: Assigned FID (%6x) in FLOGI response\n", 14437414705eSRobert Love did); 144442e9a92fSRobert Love fc_host_port_id(lport->host) = did; 144542e9a92fSRobert Love 144642e9a92fSRobert Love flp = fc_frame_payload_get(fp, sizeof(*flp)); 144742e9a92fSRobert Love if (flp) { 144842e9a92fSRobert Love mfs = ntohs(flp->fl_csp.sp_bb_data) & 144942e9a92fSRobert Love FC_SP_BB_DATA_MASK; 145042e9a92fSRobert Love if (mfs >= FC_SP_MIN_MAX_PAYLOAD && 145142e9a92fSRobert Love mfs < lport->mfs) 145242e9a92fSRobert Love lport->mfs = mfs; 145342e9a92fSRobert Love csp_flags = ntohs(flp->fl_csp.sp_features); 145442e9a92fSRobert Love r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov); 145542e9a92fSRobert Love e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov); 145642e9a92fSRobert Love if (csp_flags & FC_SP_FT_EDTR) 145742e9a92fSRobert Love e_d_tov /= 1000000; 145842e9a92fSRobert Love if ((csp_flags & FC_SP_FT_FPORT) == 0) { 145942e9a92fSRobert Love if (e_d_tov > lport->e_d_tov) 146042e9a92fSRobert Love lport->e_d_tov = e_d_tov; 146142e9a92fSRobert Love lport->r_a_tov = 2 * e_d_tov; 14627414705eSRobert Love printk(KERN_INFO "libfc: Port (%6x) entered " 14637414705eSRobert Love "point to point mode\n", did); 146442e9a92fSRobert Love fc_lport_ptp_setup(lport, ntoh24(fh->fh_s_id), 146542e9a92fSRobert Love get_unaligned_be64( 146642e9a92fSRobert Love &flp->fl_wwpn), 146742e9a92fSRobert Love get_unaligned_be64( 146842e9a92fSRobert Love &flp->fl_wwnn)); 146942e9a92fSRobert Love } else { 147042e9a92fSRobert Love lport->e_d_tov = e_d_tov; 147142e9a92fSRobert Love lport->r_a_tov = r_a_tov; 147242e9a92fSRobert Love fc_host_fabric_name(lport->host) = 147342e9a92fSRobert Love get_unaligned_be64(&flp->fl_wwnn); 147442e9a92fSRobert Love fc_lport_enter_dns(lport); 147542e9a92fSRobert Love } 147642e9a92fSRobert Love } 147742e9a92fSRobert Love } else { 14787414705eSRobert Love FC_LPORT_DBG(lport, "Bad FLOGI response\n"); 147942e9a92fSRobert Love } 148042e9a92fSRobert Love 148142e9a92fSRobert Love out: 148242e9a92fSRobert Love fc_frame_free(fp); 148342e9a92fSRobert Love err: 148442e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 148542e9a92fSRobert Love } 148642e9a92fSRobert Love 148742e9a92fSRobert Love /** 148834f42a07SRobert Love * fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager 148942e9a92fSRobert Love * @lport: Fibre Channel local port to be logged in to the fabric 149042e9a92fSRobert Love * 149142e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 149242e9a92fSRobert Love * this routine. 149342e9a92fSRobert Love */ 149442e9a92fSRobert Love void fc_lport_enter_flogi(struct fc_lport *lport) 149542e9a92fSRobert Love { 149642e9a92fSRobert Love struct fc_frame *fp; 149742e9a92fSRobert Love 14987414705eSRobert Love FC_LPORT_DBG(lport, "Entered FLOGI state from %s state\n", 14997414705eSRobert Love fc_lport_state(lport)); 150042e9a92fSRobert Love 150142e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_FLOGI); 150242e9a92fSRobert Love 150342e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 150442e9a92fSRobert Love if (!fp) 150542e9a92fSRobert Love return fc_lport_error(lport, fp); 150642e9a92fSRobert Love 1507a46f327aSJoe Eykholt if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, ELS_FLOGI, 150842e9a92fSRobert Love fc_lport_flogi_resp, lport, lport->e_d_tov)) 150942e9a92fSRobert Love fc_lport_error(lport, fp); 151042e9a92fSRobert Love } 151142e9a92fSRobert Love 151242e9a92fSRobert Love /* Configure a fc_lport */ 151342e9a92fSRobert Love int fc_lport_config(struct fc_lport *lport) 151442e9a92fSRobert Love { 151542e9a92fSRobert Love INIT_DELAYED_WORK(&lport->retry_work, fc_lport_timeout); 151642e9a92fSRobert Love mutex_init(&lport->lp_mutex); 151742e9a92fSRobert Love 1518b1d9fd55SJoe Eykholt fc_lport_state_enter(lport, LPORT_ST_DISABLED); 151942e9a92fSRobert Love 152042e9a92fSRobert Love fc_lport_add_fc4_type(lport, FC_TYPE_FCP); 152142e9a92fSRobert Love fc_lport_add_fc4_type(lport, FC_TYPE_CT); 152242e9a92fSRobert Love 152342e9a92fSRobert Love return 0; 152442e9a92fSRobert Love } 152542e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_config); 152642e9a92fSRobert Love 152742e9a92fSRobert Love int fc_lport_init(struct fc_lport *lport) 152842e9a92fSRobert Love { 152942e9a92fSRobert Love if (!lport->tt.lport_recv) 153042e9a92fSRobert Love lport->tt.lport_recv = fc_lport_recv_req; 153142e9a92fSRobert Love 153242e9a92fSRobert Love if (!lport->tt.lport_reset) 153342e9a92fSRobert Love lport->tt.lport_reset = fc_lport_reset; 153442e9a92fSRobert Love 153542e9a92fSRobert Love fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 153642e9a92fSRobert Love fc_host_node_name(lport->host) = lport->wwnn; 153742e9a92fSRobert Love fc_host_port_name(lport->host) = lport->wwpn; 153842e9a92fSRobert Love fc_host_supported_classes(lport->host) = FC_COS_CLASS3; 153942e9a92fSRobert Love memset(fc_host_supported_fc4s(lport->host), 0, 154042e9a92fSRobert Love sizeof(fc_host_supported_fc4s(lport->host))); 154142e9a92fSRobert Love fc_host_supported_fc4s(lport->host)[2] = 1; 154242e9a92fSRobert Love fc_host_supported_fc4s(lport->host)[7] = 1; 154342e9a92fSRobert Love 154442e9a92fSRobert Love /* This value is also unchanging */ 154542e9a92fSRobert Love memset(fc_host_active_fc4s(lport->host), 0, 154642e9a92fSRobert Love sizeof(fc_host_active_fc4s(lport->host))); 154742e9a92fSRobert Love fc_host_active_fc4s(lport->host)[2] = 1; 154842e9a92fSRobert Love fc_host_active_fc4s(lport->host)[7] = 1; 154942e9a92fSRobert Love fc_host_maxframe_size(lport->host) = lport->mfs; 155042e9a92fSRobert Love fc_host_supported_speeds(lport->host) = 0; 155142e9a92fSRobert Love if (lport->link_supported_speeds & FC_PORTSPEED_1GBIT) 155242e9a92fSRobert Love fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_1GBIT; 155342e9a92fSRobert Love if (lport->link_supported_speeds & FC_PORTSPEED_10GBIT) 155442e9a92fSRobert Love fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_10GBIT; 155542e9a92fSRobert Love 155696316099SVasu Dev INIT_LIST_HEAD(&lport->ema_list); 155742e9a92fSRobert Love return 0; 155842e9a92fSRobert Love } 155942e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_init); 1560