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 988866a5d9SRobert Love #include "fc_libfc.h" 998866a5d9SRobert Love 10042e9a92fSRobert Love /* Fabric IDs to use for point-to-point mode, chosen on whims. */ 10142e9a92fSRobert Love #define FC_LOCAL_PTP_FID_LO 0x010101 10242e9a92fSRobert Love #define FC_LOCAL_PTP_FID_HI 0x010102 10342e9a92fSRobert Love 10442e9a92fSRobert Love #define DNS_DELAY 3 /* Discovery delay after RSCN (in seconds)*/ 10542e9a92fSRobert Love 10642e9a92fSRobert Love static void fc_lport_error(struct fc_lport *, struct fc_frame *); 10742e9a92fSRobert Love 10842e9a92fSRobert Love static void fc_lport_enter_reset(struct fc_lport *); 10942e9a92fSRobert Love static void fc_lport_enter_flogi(struct fc_lport *); 11042e9a92fSRobert Love static void fc_lport_enter_dns(struct fc_lport *); 11142e9a92fSRobert Love static void fc_lport_enter_rpn_id(struct fc_lport *); 11242e9a92fSRobert Love static void fc_lport_enter_rft_id(struct fc_lport *); 11342e9a92fSRobert Love static void fc_lport_enter_scr(struct fc_lport *); 11442e9a92fSRobert Love static void fc_lport_enter_ready(struct fc_lport *); 11542e9a92fSRobert Love static void fc_lport_enter_logo(struct fc_lport *); 11642e9a92fSRobert Love 11742e9a92fSRobert Love static const char *fc_lport_state_names[] = { 118b1d9fd55SJoe Eykholt [LPORT_ST_DISABLED] = "disabled", 11942e9a92fSRobert Love [LPORT_ST_FLOGI] = "FLOGI", 12042e9a92fSRobert Love [LPORT_ST_DNS] = "dNS", 12142e9a92fSRobert Love [LPORT_ST_RPN_ID] = "RPN_ID", 12242e9a92fSRobert Love [LPORT_ST_RFT_ID] = "RFT_ID", 12342e9a92fSRobert Love [LPORT_ST_SCR] = "SCR", 12442e9a92fSRobert Love [LPORT_ST_READY] = "Ready", 12542e9a92fSRobert Love [LPORT_ST_LOGO] = "LOGO", 12642e9a92fSRobert Love [LPORT_ST_RESET] = "reset", 12742e9a92fSRobert Love }; 12842e9a92fSRobert Love 12942e9a92fSRobert Love static int fc_frame_drop(struct fc_lport *lport, struct fc_frame *fp) 13042e9a92fSRobert Love { 13142e9a92fSRobert Love fc_frame_free(fp); 13242e9a92fSRobert Love return 0; 13342e9a92fSRobert Love } 13442e9a92fSRobert Love 13542e9a92fSRobert Love /** 13634f42a07SRobert Love * fc_lport_rport_callback() - Event handler for rport events 13742e9a92fSRobert Love * @lport: The lport which is receiving the event 1389fb9d328SJoe Eykholt * @rdata: private remote port data 13942e9a92fSRobert Love * @event: The event that occured 14042e9a92fSRobert Love * 14142e9a92fSRobert Love * Locking Note: The rport lock should not be held when calling 14242e9a92fSRobert Love * this function. 14342e9a92fSRobert Love */ 14442e9a92fSRobert Love static void fc_lport_rport_callback(struct fc_lport *lport, 1459fb9d328SJoe Eykholt struct fc_rport_priv *rdata, 14642e9a92fSRobert Love enum fc_rport_event event) 14742e9a92fSRobert Love { 1487414705eSRobert Love FC_LPORT_DBG(lport, "Received a %d event for port (%6x)\n", event, 149f211fa51SJoe Eykholt rdata->ids.port_id); 15042e9a92fSRobert Love 151b5cbf083SJoe Eykholt mutex_lock(&lport->lp_mutex); 15242e9a92fSRobert Love switch (event) { 1534c0f62b5SJoe Eykholt case RPORT_EV_READY: 15442e9a92fSRobert Love if (lport->state == LPORT_ST_DNS) { 1559fb9d328SJoe Eykholt lport->dns_rp = rdata; 15642e9a92fSRobert Love fc_lport_enter_rpn_id(lport); 15742e9a92fSRobert Love } else { 1584c0f62b5SJoe Eykholt FC_LPORT_DBG(lport, "Received an READY event " 1597414705eSRobert Love "on port (%6x) for the directory " 16042e9a92fSRobert Love "server, but the lport is not " 16142e9a92fSRobert Love "in the DNS state, it's in the " 162f211fa51SJoe Eykholt "%d state", rdata->ids.port_id, 16342e9a92fSRobert Love lport->state); 1649fb9d328SJoe Eykholt lport->tt.rport_logoff(rdata); 16542e9a92fSRobert Love } 16642e9a92fSRobert Love break; 16742e9a92fSRobert Love case RPORT_EV_LOGO: 16842e9a92fSRobert Love case RPORT_EV_FAILED: 16942e9a92fSRobert Love case RPORT_EV_STOP: 17042e9a92fSRobert Love lport->dns_rp = NULL; 17142e9a92fSRobert Love break; 17242e9a92fSRobert Love case RPORT_EV_NONE: 17342e9a92fSRobert Love break; 17442e9a92fSRobert Love } 175b5cbf083SJoe Eykholt mutex_unlock(&lport->lp_mutex); 17642e9a92fSRobert Love } 17742e9a92fSRobert Love 17842e9a92fSRobert Love /** 17934f42a07SRobert Love * fc_lport_state() - Return a string which represents the lport's state 18042e9a92fSRobert Love * @lport: The lport whose state is to converted to a string 18142e9a92fSRobert Love */ 18242e9a92fSRobert Love static const char *fc_lport_state(struct fc_lport *lport) 18342e9a92fSRobert Love { 18442e9a92fSRobert Love const char *cp; 18542e9a92fSRobert Love 18642e9a92fSRobert Love cp = fc_lport_state_names[lport->state]; 18742e9a92fSRobert Love if (!cp) 18842e9a92fSRobert Love cp = "unknown"; 18942e9a92fSRobert Love return cp; 19042e9a92fSRobert Love } 19142e9a92fSRobert Love 19242e9a92fSRobert Love /** 19334f42a07SRobert Love * fc_lport_ptp_setup() - Create an rport for point-to-point mode 19442e9a92fSRobert Love * @lport: The lport to attach the ptp rport to 19542e9a92fSRobert Love * @fid: The FID of the ptp rport 19642e9a92fSRobert Love * @remote_wwpn: The WWPN of the ptp rport 19742e9a92fSRobert Love * @remote_wwnn: The WWNN of the ptp rport 19842e9a92fSRobert Love */ 19942e9a92fSRobert Love static void fc_lport_ptp_setup(struct fc_lport *lport, 20042e9a92fSRobert Love u32 remote_fid, u64 remote_wwpn, 20142e9a92fSRobert Love u64 remote_wwnn) 20242e9a92fSRobert Love { 20348f00902SJoe Eykholt mutex_lock(&lport->disc.disc_mutex); 20448f00902SJoe Eykholt if (lport->ptp_rp) 20542e9a92fSRobert Love lport->tt.rport_logoff(lport->ptp_rp); 2069737e6a7SRobert Love lport->ptp_rp = lport->tt.rport_create(lport, remote_fid); 2079737e6a7SRobert Love lport->ptp_rp->ids.port_name = remote_wwpn; 2089737e6a7SRobert Love lport->ptp_rp->ids.node_name = remote_wwnn; 20948f00902SJoe Eykholt mutex_unlock(&lport->disc.disc_mutex); 21042e9a92fSRobert Love 21142e9a92fSRobert Love lport->tt.rport_login(lport->ptp_rp); 21242e9a92fSRobert Love 21342e9a92fSRobert Love fc_lport_enter_ready(lport); 21442e9a92fSRobert Love } 21542e9a92fSRobert Love 21642e9a92fSRobert Love void fc_get_host_port_type(struct Scsi_Host *shost) 21742e9a92fSRobert Love { 21842e9a92fSRobert Love /* TODO - currently just NPORT */ 21942e9a92fSRobert Love fc_host_port_type(shost) = FC_PORTTYPE_NPORT; 22042e9a92fSRobert Love } 22142e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_port_type); 22242e9a92fSRobert Love 22342e9a92fSRobert Love void fc_get_host_port_state(struct Scsi_Host *shost) 22442e9a92fSRobert Love { 22542e9a92fSRobert Love struct fc_lport *lp = shost_priv(shost); 22642e9a92fSRobert Love 2278faecddbSChris Leech mutex_lock(&lp->lp_mutex); 2288faecddbSChris Leech if (!lp->link_up) 2298faecddbSChris Leech fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; 23042e9a92fSRobert Love else 2318faecddbSChris Leech switch (lp->state) { 2328faecddbSChris Leech case LPORT_ST_READY: 2338faecddbSChris Leech fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; 2348faecddbSChris Leech break; 2358faecddbSChris Leech default: 23642e9a92fSRobert Love fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; 23742e9a92fSRobert Love } 2388faecddbSChris Leech mutex_unlock(&lp->lp_mutex); 2398faecddbSChris Leech } 24042e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_port_state); 24142e9a92fSRobert Love 24242e9a92fSRobert Love void fc_get_host_speed(struct Scsi_Host *shost) 24342e9a92fSRobert Love { 24442e9a92fSRobert Love struct fc_lport *lport = shost_priv(shost); 24542e9a92fSRobert Love 24642e9a92fSRobert Love fc_host_speed(shost) = lport->link_speed; 24742e9a92fSRobert Love } 24842e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_speed); 24942e9a92fSRobert Love 25042e9a92fSRobert Love struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost) 25142e9a92fSRobert Love { 25242e9a92fSRobert Love struct fc_host_statistics *fcoe_stats; 25342e9a92fSRobert Love struct fc_lport *lp = shost_priv(shost); 25442e9a92fSRobert Love struct timespec v0, v1; 255582b45bcSRobert Love unsigned int cpu; 25642e9a92fSRobert Love 25742e9a92fSRobert Love fcoe_stats = &lp->host_stats; 25842e9a92fSRobert Love memset(fcoe_stats, 0, sizeof(struct fc_host_statistics)); 25942e9a92fSRobert Love 26042e9a92fSRobert Love jiffies_to_timespec(jiffies, &v0); 26142e9a92fSRobert Love jiffies_to_timespec(lp->boot_time, &v1); 26242e9a92fSRobert Love fcoe_stats->seconds_since_last_reset = (v0.tv_sec - v1.tv_sec); 26342e9a92fSRobert Love 264582b45bcSRobert Love for_each_possible_cpu(cpu) { 265582b45bcSRobert Love struct fcoe_dev_stats *stats; 266582b45bcSRobert Love 267582b45bcSRobert Love stats = per_cpu_ptr(lp->dev_stats, cpu); 268582b45bcSRobert Love 26942e9a92fSRobert Love fcoe_stats->tx_frames += stats->TxFrames; 27042e9a92fSRobert Love fcoe_stats->tx_words += stats->TxWords; 27142e9a92fSRobert Love fcoe_stats->rx_frames += stats->RxFrames; 27242e9a92fSRobert Love fcoe_stats->rx_words += stats->RxWords; 27342e9a92fSRobert Love fcoe_stats->error_frames += stats->ErrorFrames; 27442e9a92fSRobert Love fcoe_stats->invalid_crc_count += stats->InvalidCRCCount; 27542e9a92fSRobert Love fcoe_stats->fcp_input_requests += stats->InputRequests; 27642e9a92fSRobert Love fcoe_stats->fcp_output_requests += stats->OutputRequests; 27742e9a92fSRobert Love fcoe_stats->fcp_control_requests += stats->ControlRequests; 27842e9a92fSRobert Love fcoe_stats->fcp_input_megabytes += stats->InputMegabytes; 27942e9a92fSRobert Love fcoe_stats->fcp_output_megabytes += stats->OutputMegabytes; 28042e9a92fSRobert Love fcoe_stats->link_failure_count += stats->LinkFailureCount; 28142e9a92fSRobert Love } 28242e9a92fSRobert Love fcoe_stats->lip_count = -1; 28342e9a92fSRobert Love fcoe_stats->nos_count = -1; 28442e9a92fSRobert Love fcoe_stats->loss_of_sync_count = -1; 28542e9a92fSRobert Love fcoe_stats->loss_of_signal_count = -1; 28642e9a92fSRobert Love fcoe_stats->prim_seq_protocol_err_count = -1; 28742e9a92fSRobert Love fcoe_stats->dumped_frames = -1; 28842e9a92fSRobert Love return fcoe_stats; 28942e9a92fSRobert Love } 29042e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_stats); 29142e9a92fSRobert Love 29242e9a92fSRobert Love /* 29342e9a92fSRobert Love * Fill in FLOGI command for request. 29442e9a92fSRobert Love */ 29542e9a92fSRobert Love static void 29642e9a92fSRobert Love fc_lport_flogi_fill(struct fc_lport *lport, struct fc_els_flogi *flogi, 29742e9a92fSRobert Love unsigned int op) 29842e9a92fSRobert Love { 29942e9a92fSRobert Love struct fc_els_csp *sp; 30042e9a92fSRobert Love struct fc_els_cssp *cp; 30142e9a92fSRobert Love 30242e9a92fSRobert Love memset(flogi, 0, sizeof(*flogi)); 30342e9a92fSRobert Love flogi->fl_cmd = (u8) op; 30442e9a92fSRobert Love put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn); 30542e9a92fSRobert Love put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn); 30642e9a92fSRobert Love sp = &flogi->fl_csp; 30742e9a92fSRobert Love sp->sp_hi_ver = 0x20; 30842e9a92fSRobert Love sp->sp_lo_ver = 0x20; 30942e9a92fSRobert Love sp->sp_bb_cred = htons(10); /* this gets set by gateway */ 31042e9a92fSRobert Love sp->sp_bb_data = htons((u16) lport->mfs); 31142e9a92fSRobert Love cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */ 31242e9a92fSRobert Love cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ); 31342e9a92fSRobert Love if (op != ELS_FLOGI) { 31442e9a92fSRobert Love sp->sp_features = htons(FC_SP_FT_CIRO); 31542e9a92fSRobert Love sp->sp_tot_seq = htons(255); /* seq. we accept */ 31642e9a92fSRobert Love sp->sp_rel_off = htons(0x1f); 31742e9a92fSRobert Love sp->sp_e_d_tov = htonl(lport->e_d_tov); 31842e9a92fSRobert Love 31942e9a92fSRobert Love cp->cp_rdfs = htons((u16) lport->mfs); 32042e9a92fSRobert Love cp->cp_con_seq = htons(255); 32142e9a92fSRobert Love cp->cp_open_seq = 1; 32242e9a92fSRobert Love } 32342e9a92fSRobert Love } 32442e9a92fSRobert Love 32542e9a92fSRobert Love /* 32642e9a92fSRobert Love * Add a supported FC-4 type. 32742e9a92fSRobert Love */ 32842e9a92fSRobert Love static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type) 32942e9a92fSRobert Love { 33042e9a92fSRobert Love __be32 *mp; 33142e9a92fSRobert Love 33242e9a92fSRobert Love mp = &lport->fcts.ff_type_map[type / FC_NS_BPW]; 33342e9a92fSRobert Love *mp = htonl(ntohl(*mp) | 1UL << (type % FC_NS_BPW)); 33442e9a92fSRobert Love } 33542e9a92fSRobert Love 33642e9a92fSRobert Love /** 33734f42a07SRobert Love * fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report. 33842e9a92fSRobert Love * @lport: Fibre Channel local port recieving the RLIR 33942e9a92fSRobert Love * @sp: current sequence in the RLIR exchange 34042e9a92fSRobert Love * @fp: RLIR request frame 34142e9a92fSRobert Love * 3421b69bc06SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 34342e9a92fSRobert Love * this function. 34442e9a92fSRobert Love */ 34542e9a92fSRobert Love static void fc_lport_recv_rlir_req(struct fc_seq *sp, struct fc_frame *fp, 34642e9a92fSRobert Love struct fc_lport *lport) 34742e9a92fSRobert Love { 3487414705eSRobert Love FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n", 34942e9a92fSRobert Love fc_lport_state(lport)); 35042e9a92fSRobert Love 35142e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); 35242e9a92fSRobert Love fc_frame_free(fp); 35342e9a92fSRobert Love } 35442e9a92fSRobert Love 35542e9a92fSRobert Love /** 35634f42a07SRobert Love * fc_lport_recv_echo_req() - Handle received ECHO request 35742e9a92fSRobert Love * @lport: Fibre Channel local port recieving the ECHO 35842e9a92fSRobert Love * @sp: current sequence in the ECHO exchange 35942e9a92fSRobert Love * @fp: ECHO request frame 36042e9a92fSRobert Love * 3611b69bc06SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 36242e9a92fSRobert Love * this function. 36342e9a92fSRobert Love */ 36442e9a92fSRobert Love static void fc_lport_recv_echo_req(struct fc_seq *sp, struct fc_frame *in_fp, 36542e9a92fSRobert Love struct fc_lport *lport) 36642e9a92fSRobert Love { 36742e9a92fSRobert Love struct fc_frame *fp; 36842e9a92fSRobert Love struct fc_exch *ep = fc_seq_exch(sp); 36942e9a92fSRobert Love unsigned int len; 37042e9a92fSRobert Love void *pp; 37142e9a92fSRobert Love void *dp; 37242e9a92fSRobert Love u32 f_ctl; 37342e9a92fSRobert Love 3741b69bc06SJoe Eykholt FC_LPORT_DBG(lport, "Received ECHO request while in state %s\n", 37542e9a92fSRobert Love fc_lport_state(lport)); 37642e9a92fSRobert Love 37742e9a92fSRobert Love len = fr_len(in_fp) - sizeof(struct fc_frame_header); 37842e9a92fSRobert Love pp = fc_frame_payload_get(in_fp, len); 37942e9a92fSRobert Love 38042e9a92fSRobert Love if (len < sizeof(__be32)) 38142e9a92fSRobert Love len = sizeof(__be32); 38242e9a92fSRobert Love 38342e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 38442e9a92fSRobert Love if (fp) { 38542e9a92fSRobert Love dp = fc_frame_payload_get(fp, len); 38642e9a92fSRobert Love memcpy(dp, pp, len); 3871b69bc06SJoe Eykholt *((__be32 *)dp) = htonl(ELS_LS_ACC << 24); 38842e9a92fSRobert Love sp = lport->tt.seq_start_next(sp); 38942e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; 39042e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 39142e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 39242e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 39342e9a92fSRobert Love } 39442e9a92fSRobert Love fc_frame_free(in_fp); 39542e9a92fSRobert Love } 39642e9a92fSRobert Love 39742e9a92fSRobert Love /** 3981b69bc06SJoe Eykholt * fc_lport_recv_rnid_req() - Handle received Request Node ID data request 3991b69bc06SJoe Eykholt * @sp: The sequence in the RNID exchange 4001b69bc06SJoe Eykholt * @fp: The RNID request frame 4011b69bc06SJoe Eykholt * @lport: The local port recieving the RNID 40242e9a92fSRobert Love * 4031b69bc06SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 40442e9a92fSRobert Love * this function. 40542e9a92fSRobert Love */ 40642e9a92fSRobert Love static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp, 40742e9a92fSRobert Love struct fc_lport *lport) 40842e9a92fSRobert Love { 40942e9a92fSRobert Love struct fc_frame *fp; 41042e9a92fSRobert Love struct fc_exch *ep = fc_seq_exch(sp); 41142e9a92fSRobert Love struct fc_els_rnid *req; 41242e9a92fSRobert Love struct { 41342e9a92fSRobert Love struct fc_els_rnid_resp rnid; 41442e9a92fSRobert Love struct fc_els_rnid_cid cid; 41542e9a92fSRobert Love struct fc_els_rnid_gen gen; 41642e9a92fSRobert Love } *rp; 41742e9a92fSRobert Love struct fc_seq_els_data rjt_data; 41842e9a92fSRobert Love u8 fmt; 41942e9a92fSRobert Love size_t len; 42042e9a92fSRobert Love u32 f_ctl; 42142e9a92fSRobert Love 4227414705eSRobert Love FC_LPORT_DBG(lport, "Received RNID request while in state %s\n", 42342e9a92fSRobert Love fc_lport_state(lport)); 42442e9a92fSRobert Love 42542e9a92fSRobert Love req = fc_frame_payload_get(in_fp, sizeof(*req)); 42642e9a92fSRobert Love if (!req) { 42742e9a92fSRobert Love rjt_data.fp = NULL; 42842e9a92fSRobert Love rjt_data.reason = ELS_RJT_LOGIC; 42942e9a92fSRobert Love rjt_data.explan = ELS_EXPL_NONE; 43042e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); 43142e9a92fSRobert Love } else { 43242e9a92fSRobert Love fmt = req->rnid_fmt; 43342e9a92fSRobert Love len = sizeof(*rp); 43442e9a92fSRobert Love if (fmt != ELS_RNIDF_GEN || 43542e9a92fSRobert Love ntohl(lport->rnid_gen.rnid_atype) == 0) { 43642e9a92fSRobert Love fmt = ELS_RNIDF_NONE; /* nothing to provide */ 43742e9a92fSRobert Love len -= sizeof(rp->gen); 43842e9a92fSRobert Love } 43942e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 44042e9a92fSRobert Love if (fp) { 44142e9a92fSRobert Love rp = fc_frame_payload_get(fp, len); 44242e9a92fSRobert Love memset(rp, 0, len); 44342e9a92fSRobert Love rp->rnid.rnid_cmd = ELS_LS_ACC; 44442e9a92fSRobert Love rp->rnid.rnid_fmt = fmt; 44542e9a92fSRobert Love rp->rnid.rnid_cid_len = sizeof(rp->cid); 44642e9a92fSRobert Love rp->cid.rnid_wwpn = htonll(lport->wwpn); 44742e9a92fSRobert Love rp->cid.rnid_wwnn = htonll(lport->wwnn); 44842e9a92fSRobert Love if (fmt == ELS_RNIDF_GEN) { 44942e9a92fSRobert Love rp->rnid.rnid_sid_len = sizeof(rp->gen); 45042e9a92fSRobert Love memcpy(&rp->gen, &lport->rnid_gen, 45142e9a92fSRobert Love sizeof(rp->gen)); 45242e9a92fSRobert Love } 45342e9a92fSRobert Love sp = lport->tt.seq_start_next(sp); 45442e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; 45542e9a92fSRobert Love f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; 45642e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 45742e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 45842e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 45942e9a92fSRobert Love } 46042e9a92fSRobert Love } 46142e9a92fSRobert Love fc_frame_free(in_fp); 46242e9a92fSRobert Love } 46342e9a92fSRobert Love 46442e9a92fSRobert Love /** 46534f42a07SRobert Love * fc_lport_recv_logo_req() - Handle received fabric LOGO request 46642e9a92fSRobert Love * @lport: Fibre Channel local port recieving the LOGO 46742e9a92fSRobert Love * @sp: current sequence in the LOGO exchange 46842e9a92fSRobert Love * @fp: LOGO request frame 46942e9a92fSRobert Love * 47042e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 47142e9a92fSRobert Love * this function. 47242e9a92fSRobert Love */ 47342e9a92fSRobert Love static void fc_lport_recv_logo_req(struct fc_seq *sp, struct fc_frame *fp, 47442e9a92fSRobert Love struct fc_lport *lport) 47542e9a92fSRobert Love { 47642e9a92fSRobert Love lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); 47742e9a92fSRobert Love fc_lport_enter_reset(lport); 47842e9a92fSRobert Love fc_frame_free(fp); 47942e9a92fSRobert Love } 48042e9a92fSRobert Love 48142e9a92fSRobert Love /** 48234f42a07SRobert Love * fc_fabric_login() - Start the lport state machine 48342e9a92fSRobert Love * @lport: The lport that should log into the fabric 48442e9a92fSRobert Love * 48542e9a92fSRobert Love * Locking Note: This function should not be called 48642e9a92fSRobert Love * with the lport lock held. 48742e9a92fSRobert Love */ 48842e9a92fSRobert Love int fc_fabric_login(struct fc_lport *lport) 48942e9a92fSRobert Love { 49042e9a92fSRobert Love int rc = -1; 49142e9a92fSRobert Love 49242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 493b1d9fd55SJoe Eykholt if (lport->state == LPORT_ST_DISABLED) { 49442e9a92fSRobert Love fc_lport_enter_reset(lport); 49542e9a92fSRobert Love rc = 0; 49642e9a92fSRobert Love } 49742e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 49842e9a92fSRobert Love 49942e9a92fSRobert Love return rc; 50042e9a92fSRobert Love } 50142e9a92fSRobert Love EXPORT_SYMBOL(fc_fabric_login); 50242e9a92fSRobert Love 50342e9a92fSRobert Love /** 5048faecddbSChris Leech * __fc_linkup() - Handler for transport linkup events 5058faecddbSChris Leech * @lport: The lport whose link is up 5068faecddbSChris Leech * 5078faecddbSChris Leech * Locking: must be called with the lp_mutex held 5088faecddbSChris Leech */ 5098faecddbSChris Leech void __fc_linkup(struct fc_lport *lport) 5108faecddbSChris Leech { 5118faecddbSChris Leech if (!lport->link_up) { 5128faecddbSChris Leech lport->link_up = 1; 5138faecddbSChris Leech 5148faecddbSChris Leech if (lport->state == LPORT_ST_RESET) 5158faecddbSChris Leech fc_lport_enter_flogi(lport); 5168faecddbSChris Leech } 5178faecddbSChris Leech } 5188faecddbSChris Leech 5198faecddbSChris Leech /** 52034f42a07SRobert Love * fc_linkup() - Handler for transport linkup events 52142e9a92fSRobert Love * @lport: The lport whose link is up 52242e9a92fSRobert Love */ 52342e9a92fSRobert Love void fc_linkup(struct fc_lport *lport) 52442e9a92fSRobert Love { 5257414705eSRobert Love printk(KERN_INFO "libfc: Link up on port (%6x)\n", 52642e9a92fSRobert Love fc_host_port_id(lport->host)); 52742e9a92fSRobert Love 52842e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 5298faecddbSChris Leech __fc_linkup(lport); 53042e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 53142e9a92fSRobert Love } 53242e9a92fSRobert Love EXPORT_SYMBOL(fc_linkup); 53342e9a92fSRobert Love 53442e9a92fSRobert Love /** 5358faecddbSChris Leech * __fc_linkdown() - Handler for transport linkdown events 5368faecddbSChris Leech * @lport: The lport whose link is down 5378faecddbSChris Leech * 5388faecddbSChris Leech * Locking: must be called with the lp_mutex held 5398faecddbSChris Leech */ 5408faecddbSChris Leech void __fc_linkdown(struct fc_lport *lport) 5418faecddbSChris Leech { 5428faecddbSChris Leech if (lport->link_up) { 5438faecddbSChris Leech lport->link_up = 0; 5448faecddbSChris Leech fc_lport_enter_reset(lport); 5458faecddbSChris Leech lport->tt.fcp_cleanup(lport); 5468faecddbSChris Leech } 5478faecddbSChris Leech } 5488faecddbSChris Leech 5498faecddbSChris Leech /** 55034f42a07SRobert Love * fc_linkdown() - Handler for transport linkdown events 55142e9a92fSRobert Love * @lport: The lport whose link is down 55242e9a92fSRobert Love */ 55342e9a92fSRobert Love void fc_linkdown(struct fc_lport *lport) 55442e9a92fSRobert Love { 5557414705eSRobert Love printk(KERN_INFO "libfc: Link down on port (%6x)\n", 55642e9a92fSRobert Love fc_host_port_id(lport->host)); 55742e9a92fSRobert Love 5588faecddbSChris Leech mutex_lock(&lport->lp_mutex); 5598faecddbSChris Leech __fc_linkdown(lport); 56042e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 56142e9a92fSRobert Love } 56242e9a92fSRobert Love EXPORT_SYMBOL(fc_linkdown); 56342e9a92fSRobert Love 56442e9a92fSRobert Love /** 56534f42a07SRobert Love * fc_fabric_logoff() - Logout of the fabric 56642e9a92fSRobert Love * @lport: fc_lport pointer to logoff the fabric 56742e9a92fSRobert Love * 56842e9a92fSRobert Love * Return value: 56942e9a92fSRobert Love * 0 for success, -1 for failure 57034f42a07SRobert Love */ 57142e9a92fSRobert Love int fc_fabric_logoff(struct fc_lport *lport) 57242e9a92fSRobert Love { 57342e9a92fSRobert Love lport->tt.disc_stop_final(lport); 57442e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 575a0fd2e49SAbhijeet Joglekar if (lport->dns_rp) 576a0fd2e49SAbhijeet Joglekar lport->tt.rport_logoff(lport->dns_rp); 577a0fd2e49SAbhijeet Joglekar mutex_unlock(&lport->lp_mutex); 578a0fd2e49SAbhijeet Joglekar lport->tt.rport_flush_queue(); 579a0fd2e49SAbhijeet Joglekar mutex_lock(&lport->lp_mutex); 58042e9a92fSRobert Love fc_lport_enter_logo(lport); 58142e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 582f7db2c15SSteve Ma cancel_delayed_work_sync(&lport->retry_work); 58342e9a92fSRobert Love return 0; 58442e9a92fSRobert Love } 58542e9a92fSRobert Love EXPORT_SYMBOL(fc_fabric_logoff); 58642e9a92fSRobert Love 58742e9a92fSRobert Love /** 58834f42a07SRobert Love * fc_lport_destroy() - unregister a fc_lport 58942e9a92fSRobert Love * @lport: fc_lport pointer to unregister 59042e9a92fSRobert Love * 59142e9a92fSRobert Love * Return value: 59242e9a92fSRobert Love * None 59342e9a92fSRobert Love * Note: 59442e9a92fSRobert Love * exit routine for fc_lport instance 59542e9a92fSRobert Love * clean-up all the allocated memory 59642e9a92fSRobert Love * and free up other system resources. 59742e9a92fSRobert Love * 59834f42a07SRobert Love */ 59942e9a92fSRobert Love int fc_lport_destroy(struct fc_lport *lport) 60042e9a92fSRobert Love { 601bbf15669SAbhijeet Joglekar mutex_lock(&lport->lp_mutex); 602b1d9fd55SJoe Eykholt lport->state = LPORT_ST_DISABLED; 603bbf15669SAbhijeet Joglekar lport->link_up = 0; 60442e9a92fSRobert Love lport->tt.frame_send = fc_frame_drop; 605bbf15669SAbhijeet Joglekar mutex_unlock(&lport->lp_mutex); 606bbf15669SAbhijeet Joglekar 60742e9a92fSRobert Love lport->tt.fcp_abort_io(lport); 608e9ba8b42SJoe Eykholt lport->tt.disc_stop_final(lport); 6091f6ff364SAbhijeet Joglekar lport->tt.exch_mgr_reset(lport, 0, 0); 61042e9a92fSRobert Love return 0; 61142e9a92fSRobert Love } 61242e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_destroy); 61342e9a92fSRobert Love 61442e9a92fSRobert Love /** 61534f42a07SRobert Love * fc_set_mfs() - sets up the mfs for the corresponding fc_lport 61642e9a92fSRobert Love * @lport: fc_lport pointer to unregister 61742e9a92fSRobert Love * @mfs: the new mfs for fc_lport 61842e9a92fSRobert Love * 61942e9a92fSRobert Love * Set mfs for the given fc_lport to the new mfs. 62042e9a92fSRobert Love * 62142e9a92fSRobert Love * Return: 0 for success 62234f42a07SRobert Love */ 62342e9a92fSRobert Love int fc_set_mfs(struct fc_lport *lport, u32 mfs) 62442e9a92fSRobert Love { 62542e9a92fSRobert Love unsigned int old_mfs; 62642e9a92fSRobert Love int rc = -EINVAL; 62742e9a92fSRobert Love 62842e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 62942e9a92fSRobert Love 63042e9a92fSRobert Love old_mfs = lport->mfs; 63142e9a92fSRobert Love 63242e9a92fSRobert Love if (mfs >= FC_MIN_MAX_FRAME) { 63342e9a92fSRobert Love mfs &= ~3; 63442e9a92fSRobert Love if (mfs > FC_MAX_FRAME) 63542e9a92fSRobert Love mfs = FC_MAX_FRAME; 63642e9a92fSRobert Love mfs -= sizeof(struct fc_frame_header); 63742e9a92fSRobert Love lport->mfs = mfs; 63842e9a92fSRobert Love rc = 0; 63942e9a92fSRobert Love } 64042e9a92fSRobert Love 64142e9a92fSRobert Love if (!rc && mfs < old_mfs) 64242e9a92fSRobert Love fc_lport_enter_reset(lport); 64342e9a92fSRobert Love 64442e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 64542e9a92fSRobert Love 64642e9a92fSRobert Love return rc; 64742e9a92fSRobert Love } 64842e9a92fSRobert Love EXPORT_SYMBOL(fc_set_mfs); 64942e9a92fSRobert Love 65042e9a92fSRobert Love /** 65134f42a07SRobert Love * fc_lport_disc_callback() - Callback for discovery events 65242e9a92fSRobert Love * @lport: FC local port 65342e9a92fSRobert Love * @event: The discovery event 65442e9a92fSRobert Love */ 65542e9a92fSRobert Love void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event) 65642e9a92fSRobert Love { 65742e9a92fSRobert Love switch (event) { 65842e9a92fSRobert Love case DISC_EV_SUCCESS: 6597414705eSRobert Love FC_LPORT_DBG(lport, "Discovery succeeded\n"); 66042e9a92fSRobert Love break; 66142e9a92fSRobert Love case DISC_EV_FAILED: 6627414705eSRobert Love printk(KERN_ERR "libfc: Discovery failed for port (%6x)\n", 66342e9a92fSRobert Love fc_host_port_id(lport->host)); 66442e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 66542e9a92fSRobert Love fc_lport_enter_reset(lport); 66642e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 66742e9a92fSRobert Love break; 66842e9a92fSRobert Love case DISC_EV_NONE: 66942e9a92fSRobert Love WARN_ON(1); 67042e9a92fSRobert Love break; 67142e9a92fSRobert Love } 67242e9a92fSRobert Love } 67342e9a92fSRobert Love 67442e9a92fSRobert Love /** 67534f42a07SRobert Love * fc_rport_enter_ready() - Enter the ready state and start discovery 67642e9a92fSRobert Love * @lport: Fibre Channel local port that is ready 67742e9a92fSRobert Love * 67842e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 67942e9a92fSRobert Love * this routine. 68042e9a92fSRobert Love */ 68142e9a92fSRobert Love static void fc_lport_enter_ready(struct fc_lport *lport) 68242e9a92fSRobert Love { 6837414705eSRobert Love FC_LPORT_DBG(lport, "Entered READY from state %s\n", 6847414705eSRobert Love fc_lport_state(lport)); 68542e9a92fSRobert Love 68642e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_READY); 6878faecddbSChris Leech if (lport->vport) 6888faecddbSChris Leech fc_vport_set_state(lport->vport, FC_VPORT_ACTIVE); 6898faecddbSChris Leech fc_vports_linkchange(lport); 69042e9a92fSRobert Love 69129d898e9SJoe Eykholt if (!lport->ptp_rp) 69242e9a92fSRobert Love lport->tt.disc_start(fc_lport_disc_callback, lport); 69342e9a92fSRobert Love } 69442e9a92fSRobert Love 69542e9a92fSRobert Love /** 69634f42a07SRobert Love * fc_lport_recv_flogi_req() - Receive a FLOGI request 69742e9a92fSRobert Love * @sp_in: The sequence the FLOGI is on 69842e9a92fSRobert Love * @rx_fp: The frame the FLOGI is in 69942e9a92fSRobert Love * @lport: The lport that recieved the request 70042e9a92fSRobert Love * 70142e9a92fSRobert Love * A received FLOGI request indicates a point-to-point connection. 70242e9a92fSRobert Love * Accept it with the common service parameters indicating our N port. 70342e9a92fSRobert Love * Set up to do a PLOGI if we have the higher-number WWPN. 70442e9a92fSRobert Love * 7051b69bc06SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 70642e9a92fSRobert Love * this function. 70742e9a92fSRobert Love */ 70842e9a92fSRobert Love static void fc_lport_recv_flogi_req(struct fc_seq *sp_in, 70942e9a92fSRobert Love struct fc_frame *rx_fp, 71042e9a92fSRobert Love struct fc_lport *lport) 71142e9a92fSRobert Love { 71242e9a92fSRobert Love struct fc_frame *fp; 71342e9a92fSRobert Love struct fc_frame_header *fh; 71442e9a92fSRobert Love struct fc_seq *sp; 71542e9a92fSRobert Love struct fc_exch *ep; 71642e9a92fSRobert Love struct fc_els_flogi *flp; 71742e9a92fSRobert Love struct fc_els_flogi *new_flp; 71842e9a92fSRobert Love u64 remote_wwpn; 71942e9a92fSRobert Love u32 remote_fid; 72042e9a92fSRobert Love u32 local_fid; 72142e9a92fSRobert Love u32 f_ctl; 72242e9a92fSRobert Love 7237414705eSRobert Love FC_LPORT_DBG(lport, "Received FLOGI request while in state %s\n", 72442e9a92fSRobert Love fc_lport_state(lport)); 72542e9a92fSRobert Love 72642e9a92fSRobert Love fh = fc_frame_header_get(rx_fp); 72742e9a92fSRobert Love remote_fid = ntoh24(fh->fh_s_id); 72842e9a92fSRobert Love flp = fc_frame_payload_get(rx_fp, sizeof(*flp)); 72942e9a92fSRobert Love if (!flp) 73042e9a92fSRobert Love goto out; 73142e9a92fSRobert Love remote_wwpn = get_unaligned_be64(&flp->fl_wwpn); 73242e9a92fSRobert Love if (remote_wwpn == lport->wwpn) { 7337414705eSRobert Love printk(KERN_WARNING "libfc: Received FLOGI from port " 7347414705eSRobert Love "with same WWPN %llx\n", remote_wwpn); 73542e9a92fSRobert Love goto out; 73642e9a92fSRobert Love } 7377414705eSRobert Love FC_LPORT_DBG(lport, "FLOGI from port WWPN %llx\n", remote_wwpn); 73842e9a92fSRobert Love 73942e9a92fSRobert Love /* 74042e9a92fSRobert Love * XXX what is the right thing to do for FIDs? 74142e9a92fSRobert Love * The originator might expect our S_ID to be 0xfffffe. 74242e9a92fSRobert Love * But if so, both of us could end up with the same FID. 74342e9a92fSRobert Love */ 74442e9a92fSRobert Love local_fid = FC_LOCAL_PTP_FID_LO; 74542e9a92fSRobert Love if (remote_wwpn < lport->wwpn) { 74642e9a92fSRobert Love local_fid = FC_LOCAL_PTP_FID_HI; 74742e9a92fSRobert Love if (!remote_fid || remote_fid == local_fid) 74842e9a92fSRobert Love remote_fid = FC_LOCAL_PTP_FID_LO; 74942e9a92fSRobert Love } else if (!remote_fid) { 75042e9a92fSRobert Love remote_fid = FC_LOCAL_PTP_FID_HI; 75142e9a92fSRobert Love } 75242e9a92fSRobert Love 75342e9a92fSRobert Love fc_host_port_id(lport->host) = local_fid; 75442e9a92fSRobert Love 75542e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(*flp)); 75642e9a92fSRobert Love if (fp) { 75742e9a92fSRobert Love sp = lport->tt.seq_start_next(fr_seq(rx_fp)); 75842e9a92fSRobert Love new_flp = fc_frame_payload_get(fp, sizeof(*flp)); 75942e9a92fSRobert Love fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI); 76042e9a92fSRobert Love new_flp->fl_cmd = (u8) ELS_LS_ACC; 76142e9a92fSRobert Love 76242e9a92fSRobert Love /* 76342e9a92fSRobert Love * Send the response. If this fails, the originator should 76442e9a92fSRobert Love * repeat the sequence. 76542e9a92fSRobert Love */ 76642e9a92fSRobert Love f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ; 76742e9a92fSRobert Love ep = fc_seq_exch(sp); 76842e9a92fSRobert Love fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, 76942e9a92fSRobert Love FC_TYPE_ELS, f_ctl, 0); 77042e9a92fSRobert Love lport->tt.seq_send(lport, sp, fp); 77142e9a92fSRobert Love 77242e9a92fSRobert Love } else { 77342e9a92fSRobert Love fc_lport_error(lport, fp); 77442e9a92fSRobert Love } 77542e9a92fSRobert Love fc_lport_ptp_setup(lport, remote_fid, remote_wwpn, 77642e9a92fSRobert Love get_unaligned_be64(&flp->fl_wwnn)); 77742e9a92fSRobert Love 77842e9a92fSRobert Love out: 77942e9a92fSRobert Love sp = fr_seq(rx_fp); 78042e9a92fSRobert Love fc_frame_free(rx_fp); 78142e9a92fSRobert Love } 78242e9a92fSRobert Love 78342e9a92fSRobert Love /** 78434f42a07SRobert Love * fc_lport_recv_req() - The generic lport request handler 78542e9a92fSRobert Love * @lport: The lport that received the request 78642e9a92fSRobert Love * @sp: The sequence the request is on 78742e9a92fSRobert Love * @fp: The frame the request is in 78842e9a92fSRobert Love * 78942e9a92fSRobert Love * This function will see if the lport handles the request or 79042e9a92fSRobert Love * if an rport should handle the request. 79142e9a92fSRobert Love * 79242e9a92fSRobert Love * Locking Note: This function should not be called with the lport 79342e9a92fSRobert Love * lock held becuase it will grab the lock. 79442e9a92fSRobert Love */ 79542e9a92fSRobert Love static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp, 79642e9a92fSRobert Love struct fc_frame *fp) 79742e9a92fSRobert Love { 79842e9a92fSRobert Love struct fc_frame_header *fh = fc_frame_header_get(fp); 79942e9a92fSRobert Love void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *); 80042e9a92fSRobert Love 80142e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 80242e9a92fSRobert Love 80342e9a92fSRobert Love /* 80442e9a92fSRobert Love * Handle special ELS cases like FLOGI, LOGO, and 80542e9a92fSRobert Love * RSCN here. These don't require a session. 80642e9a92fSRobert Love * Even if we had a session, it might not be ready. 80742e9a92fSRobert Love */ 808e9ba8b42SJoe Eykholt if (!lport->link_up) 809e9ba8b42SJoe Eykholt fc_frame_free(fp); 810e9ba8b42SJoe Eykholt else if (fh->fh_type == FC_TYPE_ELS && 811e9ba8b42SJoe Eykholt fh->fh_r_ctl == FC_RCTL_ELS_REQ) { 81242e9a92fSRobert Love /* 81342e9a92fSRobert Love * Check opcode. 81442e9a92fSRobert Love */ 815131203a1SJoe Eykholt recv = lport->tt.rport_recv_req; 81642e9a92fSRobert Love switch (fc_frame_payload_op(fp)) { 81742e9a92fSRobert Love case ELS_FLOGI: 81842e9a92fSRobert Love recv = fc_lport_recv_flogi_req; 81942e9a92fSRobert Love break; 82042e9a92fSRobert Love case ELS_LOGO: 82142e9a92fSRobert Love fh = fc_frame_header_get(fp); 82242e9a92fSRobert Love if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) 82342e9a92fSRobert Love recv = fc_lport_recv_logo_req; 82442e9a92fSRobert Love break; 82542e9a92fSRobert Love case ELS_RSCN: 82642e9a92fSRobert Love recv = lport->tt.disc_recv_req; 82742e9a92fSRobert Love break; 82842e9a92fSRobert Love case ELS_ECHO: 82942e9a92fSRobert Love recv = fc_lport_recv_echo_req; 83042e9a92fSRobert Love break; 83142e9a92fSRobert Love case ELS_RLIR: 83242e9a92fSRobert Love recv = fc_lport_recv_rlir_req; 83342e9a92fSRobert Love break; 83442e9a92fSRobert Love case ELS_RNID: 83542e9a92fSRobert Love recv = fc_lport_recv_rnid_req; 83642e9a92fSRobert Love break; 83742e9a92fSRobert Love } 83842e9a92fSRobert Love 83942e9a92fSRobert Love recv(sp, fp, lport); 84042e9a92fSRobert Love } else { 8417414705eSRobert Love FC_LPORT_DBG(lport, "dropping invalid frame (eof %x)\n", 8427414705eSRobert Love fr_eof(fp)); 84342e9a92fSRobert Love fc_frame_free(fp); 84442e9a92fSRobert Love } 84542e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 84642e9a92fSRobert Love 84742e9a92fSRobert Love /* 84842e9a92fSRobert Love * The common exch_done for all request may not be good 84942e9a92fSRobert Love * if any request requires longer hold on exhange. XXX 85042e9a92fSRobert Love */ 85142e9a92fSRobert Love lport->tt.exch_done(sp); 85242e9a92fSRobert Love } 85342e9a92fSRobert Love 85442e9a92fSRobert Love /** 85534f42a07SRobert Love * fc_lport_reset() - Reset an lport 85642e9a92fSRobert Love * @lport: The lport which should be reset 85742e9a92fSRobert Love * 85842e9a92fSRobert Love * Locking Note: This functions should not be called with the 85942e9a92fSRobert Love * lport lock held. 86042e9a92fSRobert Love */ 86142e9a92fSRobert Love int fc_lport_reset(struct fc_lport *lport) 86242e9a92fSRobert Love { 863f7db2c15SSteve Ma cancel_delayed_work_sync(&lport->retry_work); 86442e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 86542e9a92fSRobert Love fc_lport_enter_reset(lport); 86642e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 86742e9a92fSRobert Love return 0; 86842e9a92fSRobert Love } 86942e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_reset); 87042e9a92fSRobert Love 87142e9a92fSRobert Love /** 8721190d925SJoe Eykholt * fc_lport_reset_locked() - Reset the local port 87342e9a92fSRobert Love * @lport: Fibre Channel local port to be reset 87442e9a92fSRobert Love * 87542e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 87642e9a92fSRobert Love * this routine. 87742e9a92fSRobert Love */ 8781190d925SJoe Eykholt static void fc_lport_reset_locked(struct fc_lport *lport) 87942e9a92fSRobert Love { 88042e9a92fSRobert Love if (lport->dns_rp) 88142e9a92fSRobert Love lport->tt.rport_logoff(lport->dns_rp); 88242e9a92fSRobert Love 88342e9a92fSRobert Love lport->ptp_rp = NULL; 88442e9a92fSRobert Love 88542e9a92fSRobert Love lport->tt.disc_stop(lport); 88642e9a92fSRobert Love 8871f6ff364SAbhijeet Joglekar lport->tt.exch_mgr_reset(lport, 0, 0); 88842e9a92fSRobert Love fc_host_fabric_name(lport->host) = 0; 88942e9a92fSRobert Love fc_host_port_id(lport->host) = 0; 8901190d925SJoe Eykholt } 89142e9a92fSRobert Love 8921190d925SJoe Eykholt /** 8931190d925SJoe Eykholt * fc_lport_enter_reset() - Reset the local port 8941190d925SJoe Eykholt * @lport: Fibre Channel local port to be reset 8951190d925SJoe Eykholt * 8961190d925SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 8971190d925SJoe Eykholt * this routine. 8981190d925SJoe Eykholt */ 8991190d925SJoe Eykholt static void fc_lport_enter_reset(struct fc_lport *lport) 9001190d925SJoe Eykholt { 9011190d925SJoe Eykholt FC_LPORT_DBG(lport, "Entered RESET state from %s state\n", 9021190d925SJoe Eykholt fc_lport_state(lport)); 9031190d925SJoe Eykholt 9048faecddbSChris Leech if (lport->vport) { 9058faecddbSChris Leech if (lport->link_up) 9068faecddbSChris Leech fc_vport_set_state(lport->vport, FC_VPORT_INITIALIZING); 9078faecddbSChris Leech else 9088faecddbSChris Leech fc_vport_set_state(lport->vport, FC_VPORT_LINKDOWN); 9098faecddbSChris Leech } 9101190d925SJoe Eykholt fc_lport_state_enter(lport, LPORT_ST_RESET); 9118faecddbSChris Leech fc_vports_linkchange(lport); 9121190d925SJoe Eykholt fc_lport_reset_locked(lport); 913bc0e17f6SVasu Dev if (lport->link_up) 91442e9a92fSRobert Love fc_lport_enter_flogi(lport); 91542e9a92fSRobert Love } 91642e9a92fSRobert Love 91742e9a92fSRobert Love /** 9181190d925SJoe Eykholt * fc_lport_enter_disabled() - disable the local port 9191190d925SJoe Eykholt * @lport: Fibre Channel local port to be reset 9201190d925SJoe Eykholt * 9211190d925SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 9221190d925SJoe Eykholt * this routine. 9231190d925SJoe Eykholt */ 9241190d925SJoe Eykholt static void fc_lport_enter_disabled(struct fc_lport *lport) 9251190d925SJoe Eykholt { 9261190d925SJoe Eykholt FC_LPORT_DBG(lport, "Entered disabled state from %s state\n", 9271190d925SJoe Eykholt fc_lport_state(lport)); 9281190d925SJoe Eykholt 9291190d925SJoe Eykholt fc_lport_state_enter(lport, LPORT_ST_DISABLED); 9308faecddbSChris Leech fc_vports_linkchange(lport); 9311190d925SJoe Eykholt fc_lport_reset_locked(lport); 9321190d925SJoe Eykholt } 9331190d925SJoe Eykholt 9341190d925SJoe Eykholt /** 93534f42a07SRobert Love * fc_lport_error() - Handler for any errors 93642e9a92fSRobert Love * @lport: The fc_lport object 93742e9a92fSRobert Love * @fp: The frame pointer 93842e9a92fSRobert Love * 93942e9a92fSRobert Love * If the error was caused by a resource allocation failure 94042e9a92fSRobert Love * then wait for half a second and retry, otherwise retry 94142e9a92fSRobert Love * after the e_d_tov time. 94242e9a92fSRobert Love */ 94342e9a92fSRobert Love static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp) 94442e9a92fSRobert Love { 94542e9a92fSRobert Love unsigned long delay = 0; 9467414705eSRobert Love FC_LPORT_DBG(lport, "Error %ld in state %s, retries %d\n", 94742e9a92fSRobert Love PTR_ERR(fp), fc_lport_state(lport), 94842e9a92fSRobert Love lport->retry_count); 94942e9a92fSRobert Love 95042e9a92fSRobert Love if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) { 95142e9a92fSRobert Love /* 95242e9a92fSRobert Love * Memory allocation failure, or the exchange timed out. 95342e9a92fSRobert Love * Retry after delay 95442e9a92fSRobert Love */ 95542e9a92fSRobert Love if (lport->retry_count < lport->max_retry_count) { 95642e9a92fSRobert Love lport->retry_count++; 95742e9a92fSRobert Love if (!fp) 95842e9a92fSRobert Love delay = msecs_to_jiffies(500); 95942e9a92fSRobert Love else 96042e9a92fSRobert Love delay = msecs_to_jiffies(lport->e_d_tov); 96142e9a92fSRobert Love 96242e9a92fSRobert Love schedule_delayed_work(&lport->retry_work, delay); 96342e9a92fSRobert Love } else { 96442e9a92fSRobert Love switch (lport->state) { 965b1d9fd55SJoe Eykholt case LPORT_ST_DISABLED: 96642e9a92fSRobert Love case LPORT_ST_READY: 96742e9a92fSRobert Love case LPORT_ST_RESET: 96842e9a92fSRobert Love case LPORT_ST_RPN_ID: 96942e9a92fSRobert Love case LPORT_ST_RFT_ID: 97042e9a92fSRobert Love case LPORT_ST_SCR: 97142e9a92fSRobert Love case LPORT_ST_DNS: 97242e9a92fSRobert Love case LPORT_ST_FLOGI: 97342e9a92fSRobert Love case LPORT_ST_LOGO: 97442e9a92fSRobert Love fc_lport_enter_reset(lport); 97542e9a92fSRobert Love break; 97642e9a92fSRobert Love } 97742e9a92fSRobert Love } 97842e9a92fSRobert Love } 97942e9a92fSRobert Love } 98042e9a92fSRobert Love 98142e9a92fSRobert Love /** 98234f42a07SRobert Love * fc_lport_rft_id_resp() - Handle response to Register Fibre 98342e9a92fSRobert Love * Channel Types by ID (RPN_ID) request 98442e9a92fSRobert Love * @sp: current sequence in RPN_ID exchange 98542e9a92fSRobert Love * @fp: response frame 98642e9a92fSRobert Love * @lp_arg: Fibre Channel host port instance 98742e9a92fSRobert Love * 98842e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 98942e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 99042e9a92fSRobert Love * and then unlock the lport. 99142e9a92fSRobert Love */ 99242e9a92fSRobert Love static void fc_lport_rft_id_resp(struct fc_seq *sp, struct fc_frame *fp, 99342e9a92fSRobert Love void *lp_arg) 99442e9a92fSRobert Love { 99542e9a92fSRobert Love struct fc_lport *lport = lp_arg; 99642e9a92fSRobert Love struct fc_frame_header *fh; 99742e9a92fSRobert Love struct fc_ct_hdr *ct; 99842e9a92fSRobert Love 999f657d299SJoe Eykholt FC_LPORT_DBG(lport, "Received a RFT_ID %s\n", fc_els_resp_type(fp)); 1000f657d299SJoe Eykholt 100142e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 100242e9a92fSRobert Love return; 100342e9a92fSRobert Love 100442e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 100542e9a92fSRobert Love 100642e9a92fSRobert Love if (lport->state != LPORT_ST_RFT_ID) { 10077414705eSRobert Love FC_LPORT_DBG(lport, "Received a RFT_ID response, but in state " 10087414705eSRobert Love "%s\n", fc_lport_state(lport)); 100976f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 101076f6804eSAbhijeet Joglekar goto err; 101142e9a92fSRobert Love goto out; 101242e9a92fSRobert Love } 101342e9a92fSRobert Love 101476f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 101576f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 101676f6804eSAbhijeet Joglekar goto err; 101776f6804eSAbhijeet Joglekar } 101876f6804eSAbhijeet Joglekar 101942e9a92fSRobert Love fh = fc_frame_header_get(fp); 102042e9a92fSRobert Love ct = fc_frame_payload_get(fp, sizeof(*ct)); 102142e9a92fSRobert Love 102242e9a92fSRobert Love if (fh && ct && fh->fh_type == FC_TYPE_CT && 102342e9a92fSRobert Love ct->ct_fs_type == FC_FST_DIR && 102442e9a92fSRobert Love ct->ct_fs_subtype == FC_NS_SUBTYPE && 102542e9a92fSRobert Love ntohs(ct->ct_cmd) == FC_FS_ACC) 102642e9a92fSRobert Love fc_lport_enter_scr(lport); 102742e9a92fSRobert Love else 102842e9a92fSRobert Love fc_lport_error(lport, fp); 102942e9a92fSRobert Love out: 103042e9a92fSRobert Love fc_frame_free(fp); 103142e9a92fSRobert Love err: 103242e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 103342e9a92fSRobert Love } 103442e9a92fSRobert Love 103542e9a92fSRobert Love /** 103634f42a07SRobert Love * fc_lport_rpn_id_resp() - Handle response to Register Port 103742e9a92fSRobert Love * Name by ID (RPN_ID) request 103842e9a92fSRobert Love * @sp: current sequence in RPN_ID exchange 103942e9a92fSRobert Love * @fp: response frame 104042e9a92fSRobert Love * @lp_arg: Fibre Channel host port instance 104142e9a92fSRobert Love * 104242e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 104342e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 104442e9a92fSRobert Love * and then unlock the lport. 104542e9a92fSRobert Love */ 104642e9a92fSRobert Love static void fc_lport_rpn_id_resp(struct fc_seq *sp, struct fc_frame *fp, 104742e9a92fSRobert Love void *lp_arg) 104842e9a92fSRobert Love { 104942e9a92fSRobert Love struct fc_lport *lport = lp_arg; 105042e9a92fSRobert Love struct fc_frame_header *fh; 105142e9a92fSRobert Love struct fc_ct_hdr *ct; 105242e9a92fSRobert Love 1053f657d299SJoe Eykholt FC_LPORT_DBG(lport, "Received a RPN_ID %s\n", fc_els_resp_type(fp)); 1054f657d299SJoe Eykholt 105542e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 105642e9a92fSRobert Love return; 105742e9a92fSRobert Love 105842e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 105942e9a92fSRobert Love 106042e9a92fSRobert Love if (lport->state != LPORT_ST_RPN_ID) { 10617414705eSRobert Love FC_LPORT_DBG(lport, "Received a RPN_ID response, but in state " 10627414705eSRobert Love "%s\n", fc_lport_state(lport)); 106376f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 106476f6804eSAbhijeet Joglekar goto err; 106542e9a92fSRobert Love goto out; 106642e9a92fSRobert Love } 106742e9a92fSRobert Love 106876f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 106976f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 107076f6804eSAbhijeet Joglekar goto err; 107176f6804eSAbhijeet Joglekar } 107276f6804eSAbhijeet Joglekar 107342e9a92fSRobert Love fh = fc_frame_header_get(fp); 107442e9a92fSRobert Love ct = fc_frame_payload_get(fp, sizeof(*ct)); 107542e9a92fSRobert Love if (fh && ct && fh->fh_type == FC_TYPE_CT && 107642e9a92fSRobert Love ct->ct_fs_type == FC_FST_DIR && 107742e9a92fSRobert Love ct->ct_fs_subtype == FC_NS_SUBTYPE && 107842e9a92fSRobert Love ntohs(ct->ct_cmd) == FC_FS_ACC) 107942e9a92fSRobert Love fc_lport_enter_rft_id(lport); 108042e9a92fSRobert Love else 108142e9a92fSRobert Love fc_lport_error(lport, fp); 108242e9a92fSRobert Love 108342e9a92fSRobert Love out: 108442e9a92fSRobert Love fc_frame_free(fp); 108542e9a92fSRobert Love err: 108642e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 108742e9a92fSRobert Love } 108842e9a92fSRobert Love 108942e9a92fSRobert Love /** 109034f42a07SRobert Love * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request 109142e9a92fSRobert Love * @sp: current sequence in SCR exchange 109242e9a92fSRobert Love * @fp: response frame 109342e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the registration request 109442e9a92fSRobert Love * 109542e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 109642e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 109742e9a92fSRobert Love * and then unlock the lport. 109842e9a92fSRobert Love */ 109942e9a92fSRobert Love static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp, 110042e9a92fSRobert Love void *lp_arg) 110142e9a92fSRobert Love { 110242e9a92fSRobert Love struct fc_lport *lport = lp_arg; 110342e9a92fSRobert Love u8 op; 110442e9a92fSRobert Love 1105f657d299SJoe Eykholt FC_LPORT_DBG(lport, "Received a SCR %s\n", fc_els_resp_type(fp)); 1106f657d299SJoe Eykholt 110742e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 110842e9a92fSRobert Love return; 110942e9a92fSRobert Love 111042e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 111142e9a92fSRobert Love 111242e9a92fSRobert Love if (lport->state != LPORT_ST_SCR) { 11137414705eSRobert Love FC_LPORT_DBG(lport, "Received a SCR response, but in state " 11147414705eSRobert Love "%s\n", fc_lport_state(lport)); 111576f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 111676f6804eSAbhijeet Joglekar goto err; 111742e9a92fSRobert Love goto out; 111842e9a92fSRobert Love } 111942e9a92fSRobert Love 112076f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 112176f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 112276f6804eSAbhijeet Joglekar goto err; 112376f6804eSAbhijeet Joglekar } 112476f6804eSAbhijeet Joglekar 112542e9a92fSRobert Love op = fc_frame_payload_op(fp); 112642e9a92fSRobert Love if (op == ELS_LS_ACC) 112742e9a92fSRobert Love fc_lport_enter_ready(lport); 112842e9a92fSRobert Love else 112942e9a92fSRobert Love fc_lport_error(lport, fp); 113042e9a92fSRobert Love 113142e9a92fSRobert Love out: 113242e9a92fSRobert Love fc_frame_free(fp); 113342e9a92fSRobert Love err: 113442e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 113542e9a92fSRobert Love } 113642e9a92fSRobert Love 113742e9a92fSRobert Love /** 113834f42a07SRobert Love * fc_lport_enter_scr() - Send a State Change Register (SCR) request 113942e9a92fSRobert Love * @lport: Fibre Channel local port to register for state changes 114042e9a92fSRobert Love * 114142e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 114242e9a92fSRobert Love * this routine. 114342e9a92fSRobert Love */ 114442e9a92fSRobert Love static void fc_lport_enter_scr(struct fc_lport *lport) 114542e9a92fSRobert Love { 114642e9a92fSRobert Love struct fc_frame *fp; 114742e9a92fSRobert Love 11487414705eSRobert Love FC_LPORT_DBG(lport, "Entered SCR state from %s state\n", 11497414705eSRobert Love fc_lport_state(lport)); 115042e9a92fSRobert Love 115142e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_SCR); 115242e9a92fSRobert Love 115342e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr)); 115442e9a92fSRobert Love if (!fp) { 115542e9a92fSRobert Love fc_lport_error(lport, fp); 115642e9a92fSRobert Love return; 115742e9a92fSRobert Love } 115842e9a92fSRobert Love 1159a46f327aSJoe Eykholt if (!lport->tt.elsct_send(lport, FC_FID_FCTRL, fp, ELS_SCR, 116042e9a92fSRobert Love fc_lport_scr_resp, lport, lport->e_d_tov)) 11618f550f93SChris Leech fc_lport_error(lport, NULL); 116242e9a92fSRobert Love } 116342e9a92fSRobert Love 116442e9a92fSRobert Love /** 116534f42a07SRobert Love * fc_lport_enter_rft_id() - Register FC4-types with the name server 116642e9a92fSRobert Love * @lport: Fibre Channel local port to register 116742e9a92fSRobert Love * 116842e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 116942e9a92fSRobert Love * this routine. 117042e9a92fSRobert Love */ 117142e9a92fSRobert Love static void fc_lport_enter_rft_id(struct fc_lport *lport) 117242e9a92fSRobert Love { 117342e9a92fSRobert Love struct fc_frame *fp; 117442e9a92fSRobert Love struct fc_ns_fts *lps; 117542e9a92fSRobert Love int i; 117642e9a92fSRobert Love 11777414705eSRobert Love FC_LPORT_DBG(lport, "Entered RFT_ID state from %s state\n", 11787414705eSRobert Love fc_lport_state(lport)); 117942e9a92fSRobert Love 118042e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_RFT_ID); 118142e9a92fSRobert Love 118242e9a92fSRobert Love lps = &lport->fcts; 118342e9a92fSRobert Love i = sizeof(lps->ff_type_map) / sizeof(lps->ff_type_map[0]); 118442e9a92fSRobert Love while (--i >= 0) 118542e9a92fSRobert Love if (ntohl(lps->ff_type_map[i]) != 0) 118642e9a92fSRobert Love break; 118742e9a92fSRobert Love if (i < 0) { 118842e9a92fSRobert Love /* nothing to register, move on to SCR */ 118942e9a92fSRobert Love fc_lport_enter_scr(lport); 119042e9a92fSRobert Love return; 119142e9a92fSRobert Love } 119242e9a92fSRobert Love 119342e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + 119442e9a92fSRobert Love sizeof(struct fc_ns_rft)); 119542e9a92fSRobert Love if (!fp) { 119642e9a92fSRobert Love fc_lport_error(lport, fp); 119742e9a92fSRobert Love return; 119842e9a92fSRobert Love } 119942e9a92fSRobert Love 1200a46f327aSJoe Eykholt if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RFT_ID, 120142e9a92fSRobert Love fc_lport_rft_id_resp, 120242e9a92fSRobert Love lport, lport->e_d_tov)) 120342e9a92fSRobert Love fc_lport_error(lport, fp); 120442e9a92fSRobert Love } 120542e9a92fSRobert Love 120642e9a92fSRobert Love /** 120734f42a07SRobert Love * fc_rport_enter_rft_id() - Register port name with the name server 120842e9a92fSRobert Love * @lport: Fibre Channel local port to register 120942e9a92fSRobert Love * 121042e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 121142e9a92fSRobert Love * this routine. 121242e9a92fSRobert Love */ 121342e9a92fSRobert Love static void fc_lport_enter_rpn_id(struct fc_lport *lport) 121442e9a92fSRobert Love { 121542e9a92fSRobert Love struct fc_frame *fp; 121642e9a92fSRobert Love 12177414705eSRobert Love FC_LPORT_DBG(lport, "Entered RPN_ID state from %s state\n", 12187414705eSRobert Love fc_lport_state(lport)); 121942e9a92fSRobert Love 122042e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_RPN_ID); 122142e9a92fSRobert Love 122242e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + 122342e9a92fSRobert Love sizeof(struct fc_ns_rn_id)); 122442e9a92fSRobert Love if (!fp) { 122542e9a92fSRobert Love fc_lport_error(lport, fp); 122642e9a92fSRobert Love return; 122742e9a92fSRobert Love } 122842e9a92fSRobert Love 1229a46f327aSJoe Eykholt if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RPN_ID, 123042e9a92fSRobert Love fc_lport_rpn_id_resp, 123142e9a92fSRobert Love lport, lport->e_d_tov)) 12328f550f93SChris Leech fc_lport_error(lport, NULL); 123342e9a92fSRobert Love } 123442e9a92fSRobert Love 123542e9a92fSRobert Love static struct fc_rport_operations fc_lport_rport_ops = { 123642e9a92fSRobert Love .event_callback = fc_lport_rport_callback, 123742e9a92fSRobert Love }; 123842e9a92fSRobert Love 123942e9a92fSRobert Love /** 124034f42a07SRobert Love * fc_rport_enter_dns() - Create a rport to the name server 124142e9a92fSRobert Love * @lport: Fibre Channel local port requesting a rport for the name server 124242e9a92fSRobert Love * 124342e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 124442e9a92fSRobert Love * this routine. 124542e9a92fSRobert Love */ 124642e9a92fSRobert Love static void fc_lport_enter_dns(struct fc_lport *lport) 124742e9a92fSRobert Love { 1248ab28f1fdSJoe Eykholt struct fc_rport_priv *rdata; 124942e9a92fSRobert Love 12507414705eSRobert Love FC_LPORT_DBG(lport, "Entered DNS state from %s state\n", 12517414705eSRobert Love fc_lport_state(lport)); 125242e9a92fSRobert Love 125342e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_DNS); 125442e9a92fSRobert Love 125548f00902SJoe Eykholt mutex_lock(&lport->disc.disc_mutex); 12569737e6a7SRobert Love rdata = lport->tt.rport_create(lport, FC_FID_DIR_SERV); 125748f00902SJoe Eykholt mutex_unlock(&lport->disc.disc_mutex); 12589fb9d328SJoe Eykholt if (!rdata) 125942e9a92fSRobert Love goto err; 126042e9a92fSRobert Love 126142e9a92fSRobert Love rdata->ops = &fc_lport_rport_ops; 12629fb9d328SJoe Eykholt lport->tt.rport_login(rdata); 126342e9a92fSRobert Love return; 126442e9a92fSRobert Love 126542e9a92fSRobert Love err: 126642e9a92fSRobert Love fc_lport_error(lport, NULL); 126742e9a92fSRobert Love } 126842e9a92fSRobert Love 126942e9a92fSRobert Love /** 127034f42a07SRobert Love * fc_lport_timeout() - Handler for the retry_work timer. 127142e9a92fSRobert Love * @work: The work struct of the fc_lport 127242e9a92fSRobert Love */ 127342e9a92fSRobert Love static void fc_lport_timeout(struct work_struct *work) 127442e9a92fSRobert Love { 127542e9a92fSRobert Love struct fc_lport *lport = 127642e9a92fSRobert Love container_of(work, struct fc_lport, 127742e9a92fSRobert Love retry_work.work); 127842e9a92fSRobert Love 127942e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 128042e9a92fSRobert Love 128142e9a92fSRobert Love switch (lport->state) { 1282b1d9fd55SJoe Eykholt case LPORT_ST_DISABLED: 128342e9a92fSRobert Love WARN_ON(1); 128442e9a92fSRobert Love break; 128522655ac2SJoe Eykholt case LPORT_ST_READY: 128622655ac2SJoe Eykholt WARN_ON(1); 128722655ac2SJoe Eykholt break; 128822655ac2SJoe Eykholt case LPORT_ST_RESET: 128922655ac2SJoe Eykholt break; 129042e9a92fSRobert Love case LPORT_ST_FLOGI: 129142e9a92fSRobert Love fc_lport_enter_flogi(lport); 129242e9a92fSRobert Love break; 129342e9a92fSRobert Love case LPORT_ST_DNS: 129442e9a92fSRobert Love fc_lport_enter_dns(lport); 129542e9a92fSRobert Love break; 129642e9a92fSRobert Love case LPORT_ST_RPN_ID: 129742e9a92fSRobert Love fc_lport_enter_rpn_id(lport); 129842e9a92fSRobert Love break; 129942e9a92fSRobert Love case LPORT_ST_RFT_ID: 130042e9a92fSRobert Love fc_lport_enter_rft_id(lport); 130142e9a92fSRobert Love break; 130242e9a92fSRobert Love case LPORT_ST_SCR: 130342e9a92fSRobert Love fc_lport_enter_scr(lport); 130442e9a92fSRobert Love break; 130542e9a92fSRobert Love case LPORT_ST_LOGO: 130642e9a92fSRobert Love fc_lport_enter_logo(lport); 130742e9a92fSRobert Love break; 130842e9a92fSRobert Love } 130942e9a92fSRobert Love 131042e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 131142e9a92fSRobert Love } 131242e9a92fSRobert Love 131342e9a92fSRobert Love /** 131434f42a07SRobert Love * fc_lport_logo_resp() - Handle response to LOGO request 131542e9a92fSRobert Love * @sp: current sequence in LOGO exchange 131642e9a92fSRobert Love * @fp: response frame 131742e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the LOGO request 131842e9a92fSRobert Love * 131942e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 132042e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 132142e9a92fSRobert Love * and then unlock the lport. 132242e9a92fSRobert Love */ 132311b56188SChris Leech void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp, 132442e9a92fSRobert Love void *lp_arg) 132542e9a92fSRobert Love { 132642e9a92fSRobert Love struct fc_lport *lport = lp_arg; 132742e9a92fSRobert Love u8 op; 132842e9a92fSRobert Love 1329f657d299SJoe Eykholt FC_LPORT_DBG(lport, "Received a LOGO %s\n", fc_els_resp_type(fp)); 1330f657d299SJoe Eykholt 133142e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 133242e9a92fSRobert Love return; 133342e9a92fSRobert Love 133442e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 133542e9a92fSRobert Love 133642e9a92fSRobert Love if (lport->state != LPORT_ST_LOGO) { 13377414705eSRobert Love FC_LPORT_DBG(lport, "Received a LOGO response, but in state " 13387414705eSRobert Love "%s\n", fc_lport_state(lport)); 133976f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 134076f6804eSAbhijeet Joglekar goto err; 134142e9a92fSRobert Love goto out; 134242e9a92fSRobert Love } 134342e9a92fSRobert Love 134476f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 134576f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 134676f6804eSAbhijeet Joglekar goto err; 134776f6804eSAbhijeet Joglekar } 134876f6804eSAbhijeet Joglekar 134942e9a92fSRobert Love op = fc_frame_payload_op(fp); 135042e9a92fSRobert Love if (op == ELS_LS_ACC) 13511190d925SJoe Eykholt fc_lport_enter_disabled(lport); 135242e9a92fSRobert Love else 135342e9a92fSRobert Love fc_lport_error(lport, fp); 135442e9a92fSRobert Love 135542e9a92fSRobert Love out: 135642e9a92fSRobert Love fc_frame_free(fp); 135742e9a92fSRobert Love err: 135842e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 135942e9a92fSRobert Love } 136011b56188SChris Leech EXPORT_SYMBOL(fc_lport_logo_resp); 136142e9a92fSRobert Love 136242e9a92fSRobert Love /** 136334f42a07SRobert Love * fc_rport_enter_logo() - Logout of the fabric 136442e9a92fSRobert Love * @lport: Fibre Channel local port to be logged out 136542e9a92fSRobert Love * 136642e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 136742e9a92fSRobert Love * this routine. 136842e9a92fSRobert Love */ 136942e9a92fSRobert Love static void fc_lport_enter_logo(struct fc_lport *lport) 137042e9a92fSRobert Love { 137142e9a92fSRobert Love struct fc_frame *fp; 137242e9a92fSRobert Love struct fc_els_logo *logo; 137342e9a92fSRobert Love 13747414705eSRobert Love FC_LPORT_DBG(lport, "Entered LOGO state from %s state\n", 13757414705eSRobert Love fc_lport_state(lport)); 137642e9a92fSRobert Love 137742e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_LOGO); 13788faecddbSChris Leech fc_vports_linkchange(lport); 137942e9a92fSRobert Love 138042e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(*logo)); 138142e9a92fSRobert Love if (!fp) { 138242e9a92fSRobert Love fc_lport_error(lport, fp); 138342e9a92fSRobert Love return; 138442e9a92fSRobert Love } 138542e9a92fSRobert Love 1386a46f327aSJoe Eykholt if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, ELS_LOGO, 1387a46f327aSJoe Eykholt fc_lport_logo_resp, lport, lport->e_d_tov)) 13888f550f93SChris Leech fc_lport_error(lport, NULL); 138942e9a92fSRobert Love } 139042e9a92fSRobert Love 139142e9a92fSRobert Love /** 139234f42a07SRobert Love * fc_lport_flogi_resp() - Handle response to FLOGI request 139342e9a92fSRobert Love * @sp: current sequence in FLOGI exchange 139442e9a92fSRobert Love * @fp: response frame 139542e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the FLOGI request 139642e9a92fSRobert Love * 139742e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 139842e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 139942e9a92fSRobert Love * and then unlock the lport. 140042e9a92fSRobert Love */ 140111b56188SChris Leech void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, 140242e9a92fSRobert Love void *lp_arg) 140342e9a92fSRobert Love { 140442e9a92fSRobert Love struct fc_lport *lport = lp_arg; 140542e9a92fSRobert Love struct fc_frame_header *fh; 140642e9a92fSRobert Love struct fc_els_flogi *flp; 140742e9a92fSRobert Love u32 did; 140842e9a92fSRobert Love u16 csp_flags; 140942e9a92fSRobert Love unsigned int r_a_tov; 141042e9a92fSRobert Love unsigned int e_d_tov; 141142e9a92fSRobert Love u16 mfs; 141242e9a92fSRobert Love 1413f657d299SJoe Eykholt FC_LPORT_DBG(lport, "Received a FLOGI %s\n", fc_els_resp_type(fp)); 1414f657d299SJoe Eykholt 141542e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 141642e9a92fSRobert Love return; 141742e9a92fSRobert Love 141842e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 141942e9a92fSRobert Love 142042e9a92fSRobert Love if (lport->state != LPORT_ST_FLOGI) { 14217414705eSRobert Love FC_LPORT_DBG(lport, "Received a FLOGI response, but in state " 14227414705eSRobert Love "%s\n", fc_lport_state(lport)); 142376f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 142476f6804eSAbhijeet Joglekar goto err; 142542e9a92fSRobert Love goto out; 142642e9a92fSRobert Love } 142742e9a92fSRobert Love 142876f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 142976f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 143076f6804eSAbhijeet Joglekar goto err; 143176f6804eSAbhijeet Joglekar } 143276f6804eSAbhijeet Joglekar 143342e9a92fSRobert Love fh = fc_frame_header_get(fp); 143442e9a92fSRobert Love did = ntoh24(fh->fh_d_id); 143542e9a92fSRobert Love if (fc_frame_payload_op(fp) == ELS_LS_ACC && did != 0) { 143642e9a92fSRobert Love 14377414705eSRobert Love printk(KERN_INFO "libfc: Assigned FID (%6x) in FLOGI response\n", 14387414705eSRobert Love did); 143942e9a92fSRobert Love fc_host_port_id(lport->host) = did; 144042e9a92fSRobert Love 144142e9a92fSRobert Love flp = fc_frame_payload_get(fp, sizeof(*flp)); 144242e9a92fSRobert Love if (flp) { 144342e9a92fSRobert Love mfs = ntohs(flp->fl_csp.sp_bb_data) & 144442e9a92fSRobert Love FC_SP_BB_DATA_MASK; 144542e9a92fSRobert Love if (mfs >= FC_SP_MIN_MAX_PAYLOAD && 144642e9a92fSRobert Love mfs < lport->mfs) 144742e9a92fSRobert Love lport->mfs = mfs; 144842e9a92fSRobert Love csp_flags = ntohs(flp->fl_csp.sp_features); 144942e9a92fSRobert Love r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov); 145042e9a92fSRobert Love e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov); 145142e9a92fSRobert Love if (csp_flags & FC_SP_FT_EDTR) 145242e9a92fSRobert Love e_d_tov /= 1000000; 1453db36c06cSChris Leech 1454db36c06cSChris Leech lport->npiv_enabled = !!(csp_flags & FC_SP_FT_NPIV_ACC); 1455db36c06cSChris Leech 145642e9a92fSRobert Love if ((csp_flags & FC_SP_FT_FPORT) == 0) { 145742e9a92fSRobert Love if (e_d_tov > lport->e_d_tov) 145842e9a92fSRobert Love lport->e_d_tov = e_d_tov; 145942e9a92fSRobert Love lport->r_a_tov = 2 * e_d_tov; 14607414705eSRobert Love printk(KERN_INFO "libfc: Port (%6x) entered " 14617414705eSRobert Love "point to point mode\n", did); 146242e9a92fSRobert Love fc_lport_ptp_setup(lport, ntoh24(fh->fh_s_id), 146342e9a92fSRobert Love get_unaligned_be64( 146442e9a92fSRobert Love &flp->fl_wwpn), 146542e9a92fSRobert Love get_unaligned_be64( 146642e9a92fSRobert Love &flp->fl_wwnn)); 146742e9a92fSRobert Love } else { 146842e9a92fSRobert Love lport->e_d_tov = e_d_tov; 146942e9a92fSRobert Love lport->r_a_tov = r_a_tov; 147042e9a92fSRobert Love fc_host_fabric_name(lport->host) = 147142e9a92fSRobert Love get_unaligned_be64(&flp->fl_wwnn); 147242e9a92fSRobert Love fc_lport_enter_dns(lport); 147342e9a92fSRobert Love } 147442e9a92fSRobert Love } 147542e9a92fSRobert Love } else { 14767414705eSRobert Love FC_LPORT_DBG(lport, "Bad FLOGI response\n"); 147742e9a92fSRobert Love } 147842e9a92fSRobert Love 147942e9a92fSRobert Love out: 148042e9a92fSRobert Love fc_frame_free(fp); 148142e9a92fSRobert Love err: 148242e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 148342e9a92fSRobert Love } 148411b56188SChris Leech EXPORT_SYMBOL(fc_lport_flogi_resp); 148542e9a92fSRobert Love 148642e9a92fSRobert Love /** 148734f42a07SRobert Love * fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager 148842e9a92fSRobert Love * @lport: Fibre Channel local port to be logged in to the fabric 148942e9a92fSRobert Love * 149042e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 149142e9a92fSRobert Love * this routine. 149242e9a92fSRobert Love */ 149342e9a92fSRobert Love void fc_lport_enter_flogi(struct fc_lport *lport) 149442e9a92fSRobert Love { 149542e9a92fSRobert Love struct fc_frame *fp; 149642e9a92fSRobert Love 14977414705eSRobert Love FC_LPORT_DBG(lport, "Entered FLOGI state from %s state\n", 14987414705eSRobert Love fc_lport_state(lport)); 149942e9a92fSRobert Love 150042e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_FLOGI); 150142e9a92fSRobert Love 150242e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 150342e9a92fSRobert Love if (!fp) 150442e9a92fSRobert Love return fc_lport_error(lport, fp); 150542e9a92fSRobert Love 1506db36c06cSChris Leech if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, 1507db36c06cSChris Leech lport->vport ? ELS_FDISC : ELS_FLOGI, 150842e9a92fSRobert Love fc_lport_flogi_resp, lport, lport->e_d_tov)) 15098f550f93SChris Leech fc_lport_error(lport, NULL); 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 155642e9a92fSRobert Love return 0; 155742e9a92fSRobert Love } 155842e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_init); 1559