1a61127c2SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 242e9a92fSRobert Love /* 342e9a92fSRobert Love * Copyright(c) 2007 Intel Corporation. All rights reserved. 442e9a92fSRobert Love * 542e9a92fSRobert Love * Maintained at www.Open-FCoE.org 642e9a92fSRobert Love */ 742e9a92fSRobert Love 842e9a92fSRobert Love /* 942e9a92fSRobert Love * PORT LOCKING NOTES 1042e9a92fSRobert Love * 1142e9a92fSRobert Love * These comments only apply to the 'port code' which consists of the lport, 1242e9a92fSRobert Love * disc and rport blocks. 1342e9a92fSRobert Love * 1442e9a92fSRobert Love * MOTIVATION 1542e9a92fSRobert Love * 1642e9a92fSRobert Love * The lport, disc and rport blocks all have mutexes that are used to protect 1742e9a92fSRobert Love * those objects. The main motivation for these locks is to prevent from 1842e9a92fSRobert Love * having an lport reset just before we send a frame. In that scenario the 1942e9a92fSRobert Love * lport's FID would get set to zero and then we'd send a frame with an 2042e9a92fSRobert Love * invalid SID. We also need to ensure that states don't change unexpectedly 2142e9a92fSRobert Love * while processing another state. 2242e9a92fSRobert Love * 23732bee7aSUwe Kleine-König * HIERARCHY 2442e9a92fSRobert Love * 25732bee7aSUwe Kleine-König * The following hierarchy defines the locking rules. A greater lock 2642e9a92fSRobert Love * may be held before acquiring a lesser lock, but a lesser lock should never 27732bee7aSUwe Kleine-König * be held while attempting to acquire a greater lock. Here is the hierarchy- 2842e9a92fSRobert Love * 2942e9a92fSRobert Love * lport > disc, lport > rport, disc > rport 3042e9a92fSRobert Love * 3142e9a92fSRobert Love * CALLBACKS 3242e9a92fSRobert Love * 3342e9a92fSRobert Love * The callbacks cause complications with this scheme. There is a callback 3442e9a92fSRobert Love * from the rport (to either lport or disc) and a callback from disc 3542e9a92fSRobert Love * (to the lport). 3642e9a92fSRobert Love * 3742e9a92fSRobert Love * As rports exit the rport state machine a callback is made to the owner of 3842e9a92fSRobert Love * the rport to notify success or failure. Since the callback is likely to 3942e9a92fSRobert Love * cause the lport or disc to grab its lock we cannot hold the rport lock 4042e9a92fSRobert Love * while making the callback. To ensure that the rport is not free'd while 4142e9a92fSRobert Love * processing the callback the rport callbacks are serialized through a 4242e9a92fSRobert Love * single-threaded workqueue. An rport would never be free'd while in a 4325985edcSLucas De Marchi * callback handler because no other rport work in this queue can be executed 4442e9a92fSRobert Love * at the same time. 4542e9a92fSRobert Love * 4642e9a92fSRobert Love * When discovery succeeds or fails a callback is made to the lport as 47af901ca1SAndré Goddard Rosa * notification. Currently, successful discovery causes the lport to take no 4842e9a92fSRobert Love * action. A failure will cause the lport to reset. There is likely a circular 4942e9a92fSRobert Love * locking problem with this implementation. 5042e9a92fSRobert Love */ 5142e9a92fSRobert Love 5242e9a92fSRobert Love /* 5342e9a92fSRobert Love * LPORT LOCKING 5442e9a92fSRobert Love * 5542e9a92fSRobert Love * The critical sections protected by the lport's mutex are quite broad and 5642e9a92fSRobert Love * may be improved upon in the future. The lport code and its locking doesn't 5742e9a92fSRobert Love * influence the I/O path, so excessive locking doesn't penalize I/O 5842e9a92fSRobert Love * performance. 5942e9a92fSRobert Love * 6042e9a92fSRobert Love * The strategy is to lock whenever processing a request or response. Note 6142e9a92fSRobert Love * that every _enter_* function corresponds to a state change. They generally 6242e9a92fSRobert Love * change the lports state and then send a request out on the wire. We lock 6342e9a92fSRobert Love * before calling any of these functions to protect that state change. This 6442e9a92fSRobert Love * means that the entry points into the lport block manage the locks while 6542e9a92fSRobert Love * the state machine can transition between states (i.e. _enter_* functions) 6642e9a92fSRobert Love * while always staying protected. 6742e9a92fSRobert Love * 6842e9a92fSRobert Love * When handling responses we also hold the lport mutex broadly. When the 6942e9a92fSRobert Love * lport receives the response frame it locks the mutex and then calls the 7042e9a92fSRobert Love * appropriate handler for the particuar response. Generally a response will 7142e9a92fSRobert Love * trigger a state change and so the lock must already be held. 7242e9a92fSRobert Love * 7342e9a92fSRobert Love * Retries also have to consider the locking. The retries occur from a work 7442e9a92fSRobert Love * context and the work function will lock the lport and then retry the state 7542e9a92fSRobert Love * (i.e. _enter_* function). 7642e9a92fSRobert Love */ 7742e9a92fSRobert Love 7842e9a92fSRobert Love #include <linux/timer.h> 7977a2b73aSVasu Dev #include <linux/delay.h> 80acf3368fSPaul Gortmaker #include <linux/module.h> 815a0e3ad6STejun Heo #include <linux/slab.h> 8242e9a92fSRobert Love #include <asm/unaligned.h> 8342e9a92fSRobert Love 8442e9a92fSRobert Love #include <scsi/fc/fc_gs.h> 8542e9a92fSRobert Love 8642e9a92fSRobert Love #include <scsi/libfc.h> 87a51ab396SSteve Ma #include <linux/scatterlist.h> 8842e9a92fSRobert Love 89e31ac898SArnd Bergmann #include "fc_encode.h" 908866a5d9SRobert Love #include "fc_libfc.h" 918866a5d9SRobert Love 9242e9a92fSRobert Love /* Fabric IDs to use for point-to-point mode, chosen on whims. */ 9342e9a92fSRobert Love #define FC_LOCAL_PTP_FID_LO 0x010101 9442e9a92fSRobert Love #define FC_LOCAL_PTP_FID_HI 0x010102 9542e9a92fSRobert Love 9642e9a92fSRobert Love #define DNS_DELAY 3 /* Discovery delay after RSCN (in seconds)*/ 97*0726af6bSJaved Hasan #define MAX_CT_PAYLOAD 2048 98*0726af6bSJaved Hasan #define DISCOVERED_PORTS 4 99*0726af6bSJaved Hasan #define NUMBER_OF_PORTS 1 10042e9a92fSRobert Love 10142e9a92fSRobert Love static void fc_lport_error(struct fc_lport *, struct fc_frame *); 10242e9a92fSRobert Love 10342e9a92fSRobert Love static void fc_lport_enter_reset(struct fc_lport *); 10442e9a92fSRobert Love static void fc_lport_enter_flogi(struct fc_lport *); 10542e9a92fSRobert Love static void fc_lport_enter_dns(struct fc_lport *); 106c914f7d1SChris Leech static void fc_lport_enter_ns(struct fc_lport *, enum fc_lport_state); 10742e9a92fSRobert Love static void fc_lport_enter_scr(struct fc_lport *); 10842e9a92fSRobert Love static void fc_lport_enter_ready(struct fc_lport *); 10942e9a92fSRobert Love static void fc_lport_enter_logo(struct fc_lport *); 110d78c317fSNeerav Parikh static void fc_lport_enter_fdmi(struct fc_lport *lport); 111d78c317fSNeerav Parikh static void fc_lport_enter_ms(struct fc_lport *, enum fc_lport_state); 11242e9a92fSRobert Love 11342e9a92fSRobert Love static const char *fc_lport_state_names[] = { 114b1d9fd55SJoe Eykholt [LPORT_ST_DISABLED] = "disabled", 11542e9a92fSRobert Love [LPORT_ST_FLOGI] = "FLOGI", 11642e9a92fSRobert Love [LPORT_ST_DNS] = "dNS", 117c9c7bd7aSChris Leech [LPORT_ST_RNN_ID] = "RNN_ID", 1185baa17c3SChris Leech [LPORT_ST_RSNN_NN] = "RSNN_NN", 119c9866a54SChris Leech [LPORT_ST_RSPN_ID] = "RSPN_ID", 12042e9a92fSRobert Love [LPORT_ST_RFT_ID] = "RFT_ID", 121ab593b18SJoe Eykholt [LPORT_ST_RFF_ID] = "RFF_ID", 122d78c317fSNeerav Parikh [LPORT_ST_FDMI] = "FDMI", 123d78c317fSNeerav Parikh [LPORT_ST_RHBA] = "RHBA", 124d78c317fSNeerav Parikh [LPORT_ST_RPA] = "RPA", 125d78c317fSNeerav Parikh [LPORT_ST_DHBA] = "DHBA", 126d78c317fSNeerav Parikh [LPORT_ST_DPRT] = "DPRT", 12742e9a92fSRobert Love [LPORT_ST_SCR] = "SCR", 12842e9a92fSRobert Love [LPORT_ST_READY] = "Ready", 12942e9a92fSRobert Love [LPORT_ST_LOGO] = "LOGO", 13042e9a92fSRobert Love [LPORT_ST_RESET] = "reset", 13142e9a92fSRobert Love }; 13242e9a92fSRobert Love 133a51ab396SSteve Ma /** 134a51ab396SSteve Ma * struct fc_bsg_info - FC Passthrough managemet structure 135a51ab396SSteve Ma * @job: The passthrough job 136a51ab396SSteve Ma * @lport: The local port to pass through a command 137a51ab396SSteve Ma * @rsp_code: The expected response code 138a51ab396SSteve Ma * @sg: job->reply_payload.sg_list 139a51ab396SSteve Ma * @nents: job->reply_payload.sg_cnt 140a51ab396SSteve Ma * @offset: The offset into the response data 141a51ab396SSteve Ma */ 142a51ab396SSteve Ma struct fc_bsg_info { 14375cc8cfcSJohannes Thumshirn struct bsg_job *job; 144a51ab396SSteve Ma struct fc_lport *lport; 145a51ab396SSteve Ma u16 rsp_code; 146a51ab396SSteve Ma struct scatterlist *sg; 147a51ab396SSteve Ma u32 nents; 148a51ab396SSteve Ma size_t offset; 149a51ab396SSteve Ma }; 150a51ab396SSteve Ma 1513a3b42bfSRobert Love /** 1523a3b42bfSRobert Love * fc_frame_drop() - Dummy frame handler 1533a3b42bfSRobert Love * @lport: The local port the frame was received on 1543a3b42bfSRobert Love * @fp: The received frame 1553a3b42bfSRobert Love */ 15642e9a92fSRobert Love static int fc_frame_drop(struct fc_lport *lport, struct fc_frame *fp) 15742e9a92fSRobert Love { 15842e9a92fSRobert Love fc_frame_free(fp); 15942e9a92fSRobert Love return 0; 16042e9a92fSRobert Love } 16142e9a92fSRobert Love 16242e9a92fSRobert Love /** 16334f42a07SRobert Love * fc_lport_rport_callback() - Event handler for rport events 16442e9a92fSRobert Love * @lport: The lport which is receiving the event 1659fb9d328SJoe Eykholt * @rdata: private remote port data 16625985edcSLucas De Marchi * @event: The event that occurred 16742e9a92fSRobert Love * 16842e9a92fSRobert Love * Locking Note: The rport lock should not be held when calling 16942e9a92fSRobert Love * this function. 17042e9a92fSRobert Love */ 17142e9a92fSRobert Love static void fc_lport_rport_callback(struct fc_lport *lport, 1729fb9d328SJoe Eykholt struct fc_rport_priv *rdata, 17342e9a92fSRobert Love enum fc_rport_event event) 17442e9a92fSRobert Love { 175ce8b5df0SChris Leech FC_LPORT_DBG(lport, "Received a %d event for port (%6.6x)\n", event, 176f211fa51SJoe Eykholt rdata->ids.port_id); 17742e9a92fSRobert Love 178b5cbf083SJoe Eykholt mutex_lock(&lport->lp_mutex); 17942e9a92fSRobert Love switch (event) { 1804c0f62b5SJoe Eykholt case RPORT_EV_READY: 18142e9a92fSRobert Love if (lport->state == LPORT_ST_DNS) { 1823a3b42bfSRobert Love lport->dns_rdata = rdata; 183c914f7d1SChris Leech fc_lport_enter_ns(lport, LPORT_ST_RNN_ID); 184d78c317fSNeerav Parikh } else if (lport->state == LPORT_ST_FDMI) { 185d78c317fSNeerav Parikh lport->ms_rdata = rdata; 186d78c317fSNeerav Parikh fc_lport_enter_ms(lport, LPORT_ST_DHBA); 18742e9a92fSRobert Love } else { 1884c0f62b5SJoe Eykholt FC_LPORT_DBG(lport, "Received an READY event " 189ce8b5df0SChris Leech "on port (%6.6x) for the directory " 19042e9a92fSRobert Love "server, but the lport is not " 191d78c317fSNeerav Parikh "in the DNS or FDMI state, it's in the " 192f211fa51SJoe Eykholt "%d state", rdata->ids.port_id, 19342e9a92fSRobert Love lport->state); 194c96c792aSHannes Reinecke fc_rport_logoff(rdata); 19542e9a92fSRobert Love } 19642e9a92fSRobert Love break; 19742e9a92fSRobert Love case RPORT_EV_LOGO: 19842e9a92fSRobert Love case RPORT_EV_FAILED: 19942e9a92fSRobert Love case RPORT_EV_STOP: 200d78c317fSNeerav Parikh if (rdata->ids.port_id == FC_FID_DIR_SERV) 2013a3b42bfSRobert Love lport->dns_rdata = NULL; 202d78c317fSNeerav Parikh else if (rdata->ids.port_id == FC_FID_MGMT_SERV) 203d78c317fSNeerav Parikh lport->ms_rdata = NULL; 20442e9a92fSRobert Love break; 20542e9a92fSRobert Love case RPORT_EV_NONE: 20642e9a92fSRobert Love break; 20742e9a92fSRobert Love } 208b5cbf083SJoe Eykholt mutex_unlock(&lport->lp_mutex); 20942e9a92fSRobert Love } 21042e9a92fSRobert Love 21142e9a92fSRobert Love /** 21234f42a07SRobert Love * fc_lport_state() - Return a string which represents the lport's state 21342e9a92fSRobert Love * @lport: The lport whose state is to converted to a string 21442e9a92fSRobert Love */ 21542e9a92fSRobert Love static const char *fc_lport_state(struct fc_lport *lport) 21642e9a92fSRobert Love { 21742e9a92fSRobert Love const char *cp; 21842e9a92fSRobert Love 21942e9a92fSRobert Love cp = fc_lport_state_names[lport->state]; 22042e9a92fSRobert Love if (!cp) 22142e9a92fSRobert Love cp = "unknown"; 22242e9a92fSRobert Love return cp; 22342e9a92fSRobert Love } 22442e9a92fSRobert Love 22542e9a92fSRobert Love /** 22634f42a07SRobert Love * fc_lport_ptp_setup() - Create an rport for point-to-point mode 22742e9a92fSRobert Love * @lport: The lport to attach the ptp rport to 2283a3b42bfSRobert Love * @remote_fid: The FID of the ptp rport 22942e9a92fSRobert Love * @remote_wwpn: The WWPN of the ptp rport 23042e9a92fSRobert Love * @remote_wwnn: The WWNN of the ptp rport 23142e9a92fSRobert Love */ 23242e9a92fSRobert Love static void fc_lport_ptp_setup(struct fc_lport *lport, 23342e9a92fSRobert Love u32 remote_fid, u64 remote_wwpn, 23442e9a92fSRobert Love u64 remote_wwnn) 23542e9a92fSRobert Love { 236ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 237ee35624eSHannes Reinecke 2382f2ac4a0SJoe Eykholt if (lport->ptp_rdata) { 239c96c792aSHannes Reinecke fc_rport_logoff(lport->ptp_rdata); 240944ef968SHannes Reinecke kref_put(&lport->ptp_rdata->kref, fc_rport_destroy); 2412f2ac4a0SJoe Eykholt } 242a407c593SHannes Reinecke mutex_lock(&lport->disc.disc_mutex); 2432580064bSHannes Reinecke lport->ptp_rdata = fc_rport_create(lport, remote_fid); 2442f2ac4a0SJoe Eykholt kref_get(&lport->ptp_rdata->kref); 2453a3b42bfSRobert Love lport->ptp_rdata->ids.port_name = remote_wwpn; 2463a3b42bfSRobert Love lport->ptp_rdata->ids.node_name = remote_wwnn; 24748f00902SJoe Eykholt mutex_unlock(&lport->disc.disc_mutex); 24842e9a92fSRobert Love 24905d7d3b0SHannes Reinecke fc_rport_login(lport->ptp_rdata); 25042e9a92fSRobert Love 25142e9a92fSRobert Love fc_lport_enter_ready(lport); 25242e9a92fSRobert Love } 25342e9a92fSRobert Love 2543a3b42bfSRobert Love /** 2553a3b42bfSRobert Love * fc_get_host_port_state() - Return the port state of the given Scsi_Host 2563a3b42bfSRobert Love * @shost: The SCSI host whose port state is to be determined 2573a3b42bfSRobert Love */ 25842e9a92fSRobert Love void fc_get_host_port_state(struct Scsi_Host *shost) 25942e9a92fSRobert Love { 2603a3b42bfSRobert Love struct fc_lport *lport = shost_priv(shost); 26142e9a92fSRobert Love 2623a3b42bfSRobert Love mutex_lock(&lport->lp_mutex); 2633a3b42bfSRobert Love if (!lport->link_up) 2648faecddbSChris Leech fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; 26542e9a92fSRobert Love else 2663a3b42bfSRobert Love switch (lport->state) { 2678faecddbSChris Leech case LPORT_ST_READY: 2688faecddbSChris Leech fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; 2698faecddbSChris Leech break; 2708faecddbSChris Leech default: 27142e9a92fSRobert Love fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; 27242e9a92fSRobert Love } 2733a3b42bfSRobert Love mutex_unlock(&lport->lp_mutex); 2748faecddbSChris Leech } 27542e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_port_state); 27642e9a92fSRobert Love 2773a3b42bfSRobert Love /** 2783a3b42bfSRobert Love * fc_get_host_speed() - Return the speed of the given Scsi_Host 2793a3b42bfSRobert Love * @shost: The SCSI host whose port speed is to be determined 2803a3b42bfSRobert Love */ 28142e9a92fSRobert Love void fc_get_host_speed(struct Scsi_Host *shost) 28242e9a92fSRobert Love { 28342e9a92fSRobert Love struct fc_lport *lport = shost_priv(shost); 28442e9a92fSRobert Love 28542e9a92fSRobert Love fc_host_speed(shost) = lport->link_speed; 28642e9a92fSRobert Love } 28742e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_speed); 28842e9a92fSRobert Love 2893a3b42bfSRobert Love /** 2903a3b42bfSRobert Love * fc_get_host_stats() - Return the Scsi_Host's statistics 2913a3b42bfSRobert Love * @shost: The SCSI host whose statistics are to be returned 2923a3b42bfSRobert Love */ 29342e9a92fSRobert Love struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost) 29442e9a92fSRobert Love { 2951bd49b48SVasu Dev struct fc_host_statistics *fc_stats; 2963a3b42bfSRobert Love struct fc_lport *lport = shost_priv(shost); 297582b45bcSRobert Love unsigned int cpu; 2985f0e385fSJoe Eykholt u64 fcp_in_bytes = 0; 2995f0e385fSJoe Eykholt u64 fcp_out_bytes = 0; 30042e9a92fSRobert Love 3011bd49b48SVasu Dev fc_stats = &lport->host_stats; 3021bd49b48SVasu Dev memset(fc_stats, 0, sizeof(struct fc_host_statistics)); 30342e9a92fSRobert Love 304208da78eSJohannes Thumshirn fc_stats->seconds_since_last_reset = (jiffies - lport->boot_time) / HZ; 30542e9a92fSRobert Love 306582b45bcSRobert Love for_each_possible_cpu(cpu) { 3071bd49b48SVasu Dev struct fc_stats *stats; 308582b45bcSRobert Love 3091bd49b48SVasu Dev stats = per_cpu_ptr(lport->stats, cpu); 310582b45bcSRobert Love 3111bd49b48SVasu Dev fc_stats->tx_frames += stats->TxFrames; 3121bd49b48SVasu Dev fc_stats->tx_words += stats->TxWords; 3131bd49b48SVasu Dev fc_stats->rx_frames += stats->RxFrames; 3141bd49b48SVasu Dev fc_stats->rx_words += stats->RxWords; 3151bd49b48SVasu Dev fc_stats->error_frames += stats->ErrorFrames; 3161bd49b48SVasu Dev fc_stats->invalid_crc_count += stats->InvalidCRCCount; 3171bd49b48SVasu Dev fc_stats->fcp_input_requests += stats->InputRequests; 3181bd49b48SVasu Dev fc_stats->fcp_output_requests += stats->OutputRequests; 3191bd49b48SVasu Dev fc_stats->fcp_control_requests += stats->ControlRequests; 3205f0e385fSJoe Eykholt fcp_in_bytes += stats->InputBytes; 3215f0e385fSJoe Eykholt fcp_out_bytes += stats->OutputBytes; 3224e5fae7aSVasu Dev fc_stats->fcp_packet_alloc_failures += stats->FcpPktAllocFails; 3234e5fae7aSVasu Dev fc_stats->fcp_packet_aborts += stats->FcpPktAborts; 3244e5fae7aSVasu Dev fc_stats->fcp_frame_alloc_failures += stats->FcpFrameAllocFails; 3251bd49b48SVasu Dev fc_stats->link_failure_count += stats->LinkFailureCount; 32642e9a92fSRobert Love } 3271bd49b48SVasu Dev fc_stats->fcp_input_megabytes = div_u64(fcp_in_bytes, 1000000); 3281bd49b48SVasu Dev fc_stats->fcp_output_megabytes = div_u64(fcp_out_bytes, 1000000); 3291bd49b48SVasu Dev fc_stats->lip_count = -1; 3301bd49b48SVasu Dev fc_stats->nos_count = -1; 3311bd49b48SVasu Dev fc_stats->loss_of_sync_count = -1; 3321bd49b48SVasu Dev fc_stats->loss_of_signal_count = -1; 3331bd49b48SVasu Dev fc_stats->prim_seq_protocol_err_count = -1; 3341bd49b48SVasu Dev fc_stats->dumped_frames = -1; 3354e5fae7aSVasu Dev 3364e5fae7aSVasu Dev /* update exches stats */ 3374e5fae7aSVasu Dev fc_exch_update_stats(lport); 3384e5fae7aSVasu Dev 3391bd49b48SVasu Dev return fc_stats; 34042e9a92fSRobert Love } 34142e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_stats); 34242e9a92fSRobert Love 3433a3b42bfSRobert Love /** 3443a3b42bfSRobert Love * fc_lport_flogi_fill() - Fill in FLOGI command for request 3453a3b42bfSRobert Love * @lport: The local port the FLOGI is for 3463a3b42bfSRobert Love * @flogi: The FLOGI command 3473a3b42bfSRobert Love * @op: The opcode 34842e9a92fSRobert Love */ 3493a3b42bfSRobert Love static void fc_lport_flogi_fill(struct fc_lport *lport, 3503a3b42bfSRobert Love struct fc_els_flogi *flogi, 35142e9a92fSRobert Love unsigned int op) 35242e9a92fSRobert Love { 35342e9a92fSRobert Love struct fc_els_csp *sp; 35442e9a92fSRobert Love struct fc_els_cssp *cp; 35542e9a92fSRobert Love 35642e9a92fSRobert Love memset(flogi, 0, sizeof(*flogi)); 35742e9a92fSRobert Love flogi->fl_cmd = (u8) op; 35842e9a92fSRobert Love put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn); 35942e9a92fSRobert Love put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn); 36042e9a92fSRobert Love sp = &flogi->fl_csp; 36142e9a92fSRobert Love sp->sp_hi_ver = 0x20; 36242e9a92fSRobert Love sp->sp_lo_ver = 0x20; 36342e9a92fSRobert Love sp->sp_bb_cred = htons(10); /* this gets set by gateway */ 36442e9a92fSRobert Love sp->sp_bb_data = htons((u16) lport->mfs); 36542e9a92fSRobert Love cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */ 36642e9a92fSRobert Love cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ); 36742e9a92fSRobert Love if (op != ELS_FLOGI) { 36842e9a92fSRobert Love sp->sp_features = htons(FC_SP_FT_CIRO); 36942e9a92fSRobert Love sp->sp_tot_seq = htons(255); /* seq. we accept */ 37042e9a92fSRobert Love sp->sp_rel_off = htons(0x1f); 37142e9a92fSRobert Love sp->sp_e_d_tov = htonl(lport->e_d_tov); 37242e9a92fSRobert Love 37342e9a92fSRobert Love cp->cp_rdfs = htons((u16) lport->mfs); 37442e9a92fSRobert Love cp->cp_con_seq = htons(255); 37542e9a92fSRobert Love cp->cp_open_seq = 1; 37642e9a92fSRobert Love } 37742e9a92fSRobert Love } 37842e9a92fSRobert Love 3793a3b42bfSRobert Love /** 3803a3b42bfSRobert Love * fc_lport_add_fc4_type() - Add a supported FC-4 type to a local port 3813a3b42bfSRobert Love * @lport: The local port to add a new FC-4 type to 3823a3b42bfSRobert Love * @type: The new FC-4 type 38342e9a92fSRobert Love */ 38442e9a92fSRobert Love static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type) 38542e9a92fSRobert Love { 38642e9a92fSRobert Love __be32 *mp; 38742e9a92fSRobert Love 38842e9a92fSRobert Love mp = &lport->fcts.ff_type_map[type / FC_NS_BPW]; 38942e9a92fSRobert Love *mp = htonl(ntohl(*mp) | 1UL << (type % FC_NS_BPW)); 39042e9a92fSRobert Love } 39142e9a92fSRobert Love 39242e9a92fSRobert Love /** 39334f42a07SRobert Love * fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report. 39425985edcSLucas De Marchi * @lport: Fibre Channel local port receiving the RLIR 39592261156SJoe Eykholt * @fp: The RLIR request frame 39642e9a92fSRobert Love */ 39792261156SJoe Eykholt static void fc_lport_recv_rlir_req(struct fc_lport *lport, struct fc_frame *fp) 39842e9a92fSRobert Love { 399ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 400ee35624eSHannes Reinecke 4017414705eSRobert Love FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n", 40242e9a92fSRobert Love fc_lport_state(lport)); 40342e9a92fSRobert Love 4047ab24dd1SHannes Reinecke fc_seq_els_rsp_send(fp, ELS_LS_ACC, NULL); 40542e9a92fSRobert Love fc_frame_free(fp); 40642e9a92fSRobert Love } 40742e9a92fSRobert Love 40842e9a92fSRobert Love /** 40934f42a07SRobert Love * fc_lport_recv_echo_req() - Handle received ECHO request 41025985edcSLucas De Marchi * @lport: The local port receiving the ECHO 4119865a04dSLee Jones * @in_fp: ECHO request frame 41242e9a92fSRobert Love */ 41392261156SJoe Eykholt static void fc_lport_recv_echo_req(struct fc_lport *lport, 41492261156SJoe Eykholt struct fc_frame *in_fp) 41542e9a92fSRobert Love { 41642e9a92fSRobert Love struct fc_frame *fp; 41742e9a92fSRobert Love unsigned int len; 41842e9a92fSRobert Love void *pp; 41942e9a92fSRobert Love void *dp; 42042e9a92fSRobert Love 421ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 422ee35624eSHannes Reinecke 4231b69bc06SJoe Eykholt FC_LPORT_DBG(lport, "Received ECHO request while in state %s\n", 42442e9a92fSRobert Love fc_lport_state(lport)); 42542e9a92fSRobert Love 42642e9a92fSRobert Love len = fr_len(in_fp) - sizeof(struct fc_frame_header); 42742e9a92fSRobert Love pp = fc_frame_payload_get(in_fp, len); 42842e9a92fSRobert Love 42942e9a92fSRobert Love if (len < sizeof(__be32)) 43042e9a92fSRobert Love len = sizeof(__be32); 43142e9a92fSRobert Love 43242e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 43342e9a92fSRobert Love if (fp) { 43442e9a92fSRobert Love dp = fc_frame_payload_get(fp, len); 43542e9a92fSRobert Love memcpy(dp, pp, len); 4361b69bc06SJoe Eykholt *((__be32 *)dp) = htonl(ELS_LS_ACC << 24); 43724f089e2SJoe Eykholt fc_fill_reply_hdr(fp, in_fp, FC_RCTL_ELS_REP, 0); 43824f089e2SJoe Eykholt lport->tt.frame_send(lport, fp); 43942e9a92fSRobert Love } 44042e9a92fSRobert Love fc_frame_free(in_fp); 44142e9a92fSRobert Love } 44242e9a92fSRobert Love 44342e9a92fSRobert Love /** 4441b69bc06SJoe Eykholt * fc_lport_recv_rnid_req() - Handle received Request Node ID data request 44525985edcSLucas De Marchi * @lport: The local port receiving the RNID 4469865a04dSLee Jones * @in_fp: The RNID request frame 44742e9a92fSRobert Love */ 44892261156SJoe Eykholt static void fc_lport_recv_rnid_req(struct fc_lport *lport, 44992261156SJoe Eykholt struct fc_frame *in_fp) 45042e9a92fSRobert Love { 45142e9a92fSRobert Love struct fc_frame *fp; 45242e9a92fSRobert Love struct fc_els_rnid *req; 45342e9a92fSRobert Love struct { 45442e9a92fSRobert Love struct fc_els_rnid_resp rnid; 45542e9a92fSRobert Love struct fc_els_rnid_cid cid; 45642e9a92fSRobert Love struct fc_els_rnid_gen gen; 45742e9a92fSRobert Love } *rp; 45842e9a92fSRobert Love struct fc_seq_els_data rjt_data; 45942e9a92fSRobert Love u8 fmt; 46042e9a92fSRobert Love size_t len; 46142e9a92fSRobert Love 462ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 463ee35624eSHannes Reinecke 4647414705eSRobert Love FC_LPORT_DBG(lport, "Received RNID request while in state %s\n", 46542e9a92fSRobert Love fc_lport_state(lport)); 46642e9a92fSRobert Love 46742e9a92fSRobert Love req = fc_frame_payload_get(in_fp, sizeof(*req)); 46842e9a92fSRobert Love if (!req) { 46942e9a92fSRobert Love rjt_data.reason = ELS_RJT_LOGIC; 47042e9a92fSRobert Love rjt_data.explan = ELS_EXPL_NONE; 4717ab24dd1SHannes Reinecke fc_seq_els_rsp_send(in_fp, ELS_LS_RJT, &rjt_data); 47242e9a92fSRobert Love } else { 47342e9a92fSRobert Love fmt = req->rnid_fmt; 47442e9a92fSRobert Love len = sizeof(*rp); 47542e9a92fSRobert Love if (fmt != ELS_RNIDF_GEN || 47642e9a92fSRobert Love ntohl(lport->rnid_gen.rnid_atype) == 0) { 47742e9a92fSRobert Love fmt = ELS_RNIDF_NONE; /* nothing to provide */ 47842e9a92fSRobert Love len -= sizeof(rp->gen); 47942e9a92fSRobert Love } 48042e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 48142e9a92fSRobert Love if (fp) { 48242e9a92fSRobert Love rp = fc_frame_payload_get(fp, len); 48342e9a92fSRobert Love memset(rp, 0, len); 48442e9a92fSRobert Love rp->rnid.rnid_cmd = ELS_LS_ACC; 48542e9a92fSRobert Love rp->rnid.rnid_fmt = fmt; 48642e9a92fSRobert Love rp->rnid.rnid_cid_len = sizeof(rp->cid); 48742e9a92fSRobert Love rp->cid.rnid_wwpn = htonll(lport->wwpn); 48842e9a92fSRobert Love rp->cid.rnid_wwnn = htonll(lport->wwnn); 48942e9a92fSRobert Love if (fmt == ELS_RNIDF_GEN) { 49042e9a92fSRobert Love rp->rnid.rnid_sid_len = sizeof(rp->gen); 49142e9a92fSRobert Love memcpy(&rp->gen, &lport->rnid_gen, 49242e9a92fSRobert Love sizeof(rp->gen)); 49342e9a92fSRobert Love } 49424f089e2SJoe Eykholt fc_fill_reply_hdr(fp, in_fp, FC_RCTL_ELS_REP, 0); 49524f089e2SJoe Eykholt lport->tt.frame_send(lport, fp); 49642e9a92fSRobert Love } 49742e9a92fSRobert Love } 49842e9a92fSRobert Love fc_frame_free(in_fp); 49942e9a92fSRobert Love } 50042e9a92fSRobert Love 50142e9a92fSRobert Love /** 50234f42a07SRobert Love * fc_lport_recv_logo_req() - Handle received fabric LOGO request 50325985edcSLucas De Marchi * @lport: The local port receiving the LOGO 50492261156SJoe Eykholt * @fp: The LOGO request frame 50542e9a92fSRobert Love */ 50692261156SJoe Eykholt static void fc_lport_recv_logo_req(struct fc_lport *lport, struct fc_frame *fp) 50742e9a92fSRobert Love { 508ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 509ee35624eSHannes Reinecke 5107ab24dd1SHannes Reinecke fc_seq_els_rsp_send(fp, ELS_LS_ACC, NULL); 51142e9a92fSRobert Love fc_lport_enter_reset(lport); 51242e9a92fSRobert Love fc_frame_free(fp); 51342e9a92fSRobert Love } 51442e9a92fSRobert Love 51542e9a92fSRobert Love /** 51634f42a07SRobert Love * fc_fabric_login() - Start the lport state machine 5173a3b42bfSRobert Love * @lport: The local port that should log into the fabric 51842e9a92fSRobert Love * 51942e9a92fSRobert Love * Locking Note: This function should not be called 52042e9a92fSRobert Love * with the lport lock held. 52142e9a92fSRobert Love */ 52242e9a92fSRobert Love int fc_fabric_login(struct fc_lport *lport) 52342e9a92fSRobert Love { 52442e9a92fSRobert Love int rc = -1; 52542e9a92fSRobert Love 52642e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 52755a66d3cSVasu Dev if (lport->state == LPORT_ST_DISABLED || 52855a66d3cSVasu Dev lport->state == LPORT_ST_LOGO) { 52955a66d3cSVasu Dev fc_lport_state_enter(lport, LPORT_ST_RESET); 53042e9a92fSRobert Love fc_lport_enter_reset(lport); 53142e9a92fSRobert Love rc = 0; 53242e9a92fSRobert Love } 53342e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 53442e9a92fSRobert Love 53542e9a92fSRobert Love return rc; 53642e9a92fSRobert Love } 53742e9a92fSRobert Love EXPORT_SYMBOL(fc_fabric_login); 53842e9a92fSRobert Love 53942e9a92fSRobert Love /** 5408faecddbSChris Leech * __fc_linkup() - Handler for transport linkup events 5418faecddbSChris Leech * @lport: The lport whose link is up 5428faecddbSChris Leech */ 5438faecddbSChris Leech void __fc_linkup(struct fc_lport *lport) 5448faecddbSChris Leech { 545ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 546ee35624eSHannes Reinecke 5478faecddbSChris Leech if (!lport->link_up) { 5488faecddbSChris Leech lport->link_up = 1; 5498faecddbSChris Leech 5508faecddbSChris Leech if (lport->state == LPORT_ST_RESET) 5518faecddbSChris Leech fc_lport_enter_flogi(lport); 5528faecddbSChris Leech } 5538faecddbSChris Leech } 5548faecddbSChris Leech 5558faecddbSChris Leech /** 55634f42a07SRobert Love * fc_linkup() - Handler for transport linkup events 5573a3b42bfSRobert Love * @lport: The local port whose link is up 55842e9a92fSRobert Love */ 55942e9a92fSRobert Love void fc_linkup(struct fc_lport *lport) 56042e9a92fSRobert Love { 561ce8b5df0SChris Leech printk(KERN_INFO "host%d: libfc: Link up on port (%6.6x)\n", 5627b2787ecSRobert Love lport->host->host_no, lport->port_id); 56342e9a92fSRobert Love 56442e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 5658faecddbSChris Leech __fc_linkup(lport); 56642e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 56742e9a92fSRobert Love } 56842e9a92fSRobert Love EXPORT_SYMBOL(fc_linkup); 56942e9a92fSRobert Love 57042e9a92fSRobert Love /** 5718faecddbSChris Leech * __fc_linkdown() - Handler for transport linkdown events 5728faecddbSChris Leech * @lport: The lport whose link is down 5738faecddbSChris Leech */ 5748faecddbSChris Leech void __fc_linkdown(struct fc_lport *lport) 5758faecddbSChris Leech { 576ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 577ee35624eSHannes Reinecke 5788faecddbSChris Leech if (lport->link_up) { 5798faecddbSChris Leech lport->link_up = 0; 5808faecddbSChris Leech fc_lport_enter_reset(lport); 5818faecddbSChris Leech lport->tt.fcp_cleanup(lport); 5828faecddbSChris Leech } 5838faecddbSChris Leech } 5848faecddbSChris Leech 5858faecddbSChris Leech /** 58634f42a07SRobert Love * fc_linkdown() - Handler for transport linkdown events 5873a3b42bfSRobert Love * @lport: The local port whose link is down 58842e9a92fSRobert Love */ 58942e9a92fSRobert Love void fc_linkdown(struct fc_lport *lport) 59042e9a92fSRobert Love { 591ce8b5df0SChris Leech printk(KERN_INFO "host%d: libfc: Link down on port (%6.6x)\n", 5927b2787ecSRobert Love lport->host->host_no, lport->port_id); 59342e9a92fSRobert Love 5948faecddbSChris Leech mutex_lock(&lport->lp_mutex); 5958faecddbSChris Leech __fc_linkdown(lport); 59642e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 59742e9a92fSRobert Love } 59842e9a92fSRobert Love EXPORT_SYMBOL(fc_linkdown); 59942e9a92fSRobert Love 60042e9a92fSRobert Love /** 60134f42a07SRobert Love * fc_fabric_logoff() - Logout of the fabric 6023a3b42bfSRobert Love * @lport: The local port to logoff the fabric 60342e9a92fSRobert Love * 60442e9a92fSRobert Love * Return value: 60542e9a92fSRobert Love * 0 for success, -1 for failure 60634f42a07SRobert Love */ 60742e9a92fSRobert Love int fc_fabric_logoff(struct fc_lport *lport) 60842e9a92fSRobert Love { 60942e9a92fSRobert Love lport->tt.disc_stop_final(lport); 61042e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 6113a3b42bfSRobert Love if (lport->dns_rdata) 612c96c792aSHannes Reinecke fc_rport_logoff(lport->dns_rdata); 613a0fd2e49SAbhijeet Joglekar mutex_unlock(&lport->lp_mutex); 6145922a957SHannes Reinecke fc_rport_flush_queue(); 615a0fd2e49SAbhijeet Joglekar mutex_lock(&lport->lp_mutex); 61642e9a92fSRobert Love fc_lport_enter_logo(lport); 61742e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 618f7db2c15SSteve Ma cancel_delayed_work_sync(&lport->retry_work); 61942e9a92fSRobert Love return 0; 62042e9a92fSRobert Love } 62142e9a92fSRobert Love EXPORT_SYMBOL(fc_fabric_logoff); 62242e9a92fSRobert Love 62342e9a92fSRobert Love /** 6243a3b42bfSRobert Love * fc_lport_destroy() - Unregister a fc_lport 6253a3b42bfSRobert Love * @lport: The local port to unregister 62642e9a92fSRobert Love * 62742e9a92fSRobert Love * Note: 62842e9a92fSRobert Love * exit routine for fc_lport instance 62942e9a92fSRobert Love * clean-up all the allocated memory 63042e9a92fSRobert Love * and free up other system resources. 63142e9a92fSRobert Love * 63234f42a07SRobert Love */ 63342e9a92fSRobert Love int fc_lport_destroy(struct fc_lport *lport) 63442e9a92fSRobert Love { 635bbf15669SAbhijeet Joglekar mutex_lock(&lport->lp_mutex); 636b1d9fd55SJoe Eykholt lport->state = LPORT_ST_DISABLED; 637bbf15669SAbhijeet Joglekar lport->link_up = 0; 63842e9a92fSRobert Love lport->tt.frame_send = fc_frame_drop; 639bbf15669SAbhijeet Joglekar mutex_unlock(&lport->lp_mutex); 640bbf15669SAbhijeet Joglekar 64142e9a92fSRobert Love lport->tt.fcp_abort_io(lport); 642e9ba8b42SJoe Eykholt lport->tt.disc_stop_final(lport); 6431f6ff364SAbhijeet Joglekar lport->tt.exch_mgr_reset(lport, 0, 0); 644061446a1SVasu Dev cancel_delayed_work_sync(&lport->retry_work); 64570d53b04SJoe Eykholt fc_fc4_del_lport(lport); 64642e9a92fSRobert Love return 0; 64742e9a92fSRobert Love } 64842e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_destroy); 64942e9a92fSRobert Love 65042e9a92fSRobert Love /** 6513a3b42bfSRobert Love * fc_set_mfs() - Set the maximum frame size for a local port 6523a3b42bfSRobert Love * @lport: The local port to set the MFS for 6533a3b42bfSRobert Love * @mfs: The new MFS 65434f42a07SRobert Love */ 65542e9a92fSRobert Love int fc_set_mfs(struct fc_lport *lport, u32 mfs) 65642e9a92fSRobert Love { 65742e9a92fSRobert Love unsigned int old_mfs; 65842e9a92fSRobert Love int rc = -EINVAL; 65942e9a92fSRobert Love 66042e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 66142e9a92fSRobert Love 66242e9a92fSRobert Love old_mfs = lport->mfs; 66342e9a92fSRobert Love 66442e9a92fSRobert Love if (mfs >= FC_MIN_MAX_FRAME) { 66542e9a92fSRobert Love mfs &= ~3; 66642e9a92fSRobert Love if (mfs > FC_MAX_FRAME) 66742e9a92fSRobert Love mfs = FC_MAX_FRAME; 66842e9a92fSRobert Love mfs -= sizeof(struct fc_frame_header); 66942e9a92fSRobert Love lport->mfs = mfs; 67042e9a92fSRobert Love rc = 0; 67142e9a92fSRobert Love } 67242e9a92fSRobert Love 67342e9a92fSRobert Love if (!rc && mfs < old_mfs) 67442e9a92fSRobert Love fc_lport_enter_reset(lport); 67542e9a92fSRobert Love 67642e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 67742e9a92fSRobert Love 67842e9a92fSRobert Love return rc; 67942e9a92fSRobert Love } 68042e9a92fSRobert Love EXPORT_SYMBOL(fc_set_mfs); 68142e9a92fSRobert Love 68242e9a92fSRobert Love /** 68334f42a07SRobert Love * fc_lport_disc_callback() - Callback for discovery events 6843a3b42bfSRobert Love * @lport: The local port receiving the event 68542e9a92fSRobert Love * @event: The discovery event 68642e9a92fSRobert Love */ 687c6b21c93SBart Van Assche static void fc_lport_disc_callback(struct fc_lport *lport, 688c6b21c93SBart Van Assche enum fc_disc_event event) 68942e9a92fSRobert Love { 69042e9a92fSRobert Love switch (event) { 69142e9a92fSRobert Love case DISC_EV_SUCCESS: 6927414705eSRobert Love FC_LPORT_DBG(lport, "Discovery succeeded\n"); 69342e9a92fSRobert Love break; 69442e9a92fSRobert Love case DISC_EV_FAILED: 695e6d8a1b0SJoe Eykholt printk(KERN_ERR "host%d: libfc: " 696ce8b5df0SChris Leech "Discovery failed for port (%6.6x)\n", 6977b2787ecSRobert Love lport->host->host_no, lport->port_id); 69842e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 69942e9a92fSRobert Love fc_lport_enter_reset(lport); 70042e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 70142e9a92fSRobert Love break; 70242e9a92fSRobert Love case DISC_EV_NONE: 70342e9a92fSRobert Love WARN_ON(1); 70442e9a92fSRobert Love break; 70542e9a92fSRobert Love } 70642e9a92fSRobert Love } 70742e9a92fSRobert Love 70842e9a92fSRobert Love /** 7094a4db603SLee Jones * fc_lport_enter_ready() - Enter the ready state and start discovery 7103a3b42bfSRobert Love * @lport: The local port that is ready 71142e9a92fSRobert Love */ 71242e9a92fSRobert Love static void fc_lport_enter_ready(struct fc_lport *lport) 71342e9a92fSRobert Love { 714ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 715ee35624eSHannes Reinecke 7167414705eSRobert Love FC_LPORT_DBG(lport, "Entered READY from state %s\n", 7177414705eSRobert Love fc_lport_state(lport)); 71842e9a92fSRobert Love 71942e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_READY); 7208faecddbSChris Leech if (lport->vport) 7218faecddbSChris Leech fc_vport_set_state(lport->vport, FC_VPORT_ACTIVE); 7228faecddbSChris Leech fc_vports_linkchange(lport); 72342e9a92fSRobert Love 7243a3b42bfSRobert Love if (!lport->ptp_rdata) 72542e9a92fSRobert Love lport->tt.disc_start(fc_lport_disc_callback, lport); 72642e9a92fSRobert Love } 72742e9a92fSRobert Love 72842e9a92fSRobert Love /** 729093bb6a2SJoe Eykholt * fc_lport_set_port_id() - set the local port Port ID 730093bb6a2SJoe Eykholt * @lport: The local port which will have its Port ID set. 731093bb6a2SJoe Eykholt * @port_id: The new port ID. 732093bb6a2SJoe Eykholt * @fp: The frame containing the incoming request, or NULL. 733093bb6a2SJoe Eykholt */ 734093bb6a2SJoe Eykholt static void fc_lport_set_port_id(struct fc_lport *lport, u32 port_id, 735093bb6a2SJoe Eykholt struct fc_frame *fp) 736093bb6a2SJoe Eykholt { 737ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 738ee35624eSHannes Reinecke 739093bb6a2SJoe Eykholt if (port_id) 740ce8b5df0SChris Leech printk(KERN_INFO "host%d: Assigned Port ID %6.6x\n", 741093bb6a2SJoe Eykholt lport->host->host_no, port_id); 742093bb6a2SJoe Eykholt 7437b2787ecSRobert Love lport->port_id = port_id; 7447b2787ecSRobert Love 7457b2787ecSRobert Love /* Update the fc_host */ 746093bb6a2SJoe Eykholt fc_host_port_id(lport->host) = port_id; 7477b2787ecSRobert Love 748093bb6a2SJoe Eykholt if (lport->tt.lport_set_port_id) 749093bb6a2SJoe Eykholt lport->tt.lport_set_port_id(lport, port_id, fp); 750093bb6a2SJoe Eykholt } 751093bb6a2SJoe Eykholt 752093bb6a2SJoe Eykholt /** 7534a4db603SLee Jones * fc_lport_set_local_id() - set the local port Port ID for point-to-multipoint 7543726f358SJoe Eykholt * @lport: The local port which will have its Port ID set. 7553726f358SJoe Eykholt * @port_id: The new port ID. 7563726f358SJoe Eykholt * 7573726f358SJoe Eykholt * Called by the lower-level driver when transport sets the local port_id. 7583726f358SJoe Eykholt * This is used in VN_port to VN_port mode for FCoE, and causes FLOGI and 7593726f358SJoe Eykholt * discovery to be skipped. 7603726f358SJoe Eykholt */ 7613726f358SJoe Eykholt void fc_lport_set_local_id(struct fc_lport *lport, u32 port_id) 7623726f358SJoe Eykholt { 7633726f358SJoe Eykholt mutex_lock(&lport->lp_mutex); 7643726f358SJoe Eykholt 7653726f358SJoe Eykholt fc_lport_set_port_id(lport, port_id, NULL); 7663726f358SJoe Eykholt 7673726f358SJoe Eykholt switch (lport->state) { 7683726f358SJoe Eykholt case LPORT_ST_RESET: 7693726f358SJoe Eykholt case LPORT_ST_FLOGI: 7703726f358SJoe Eykholt if (port_id) 7713726f358SJoe Eykholt fc_lport_enter_ready(lport); 7723726f358SJoe Eykholt break; 7733726f358SJoe Eykholt default: 7743726f358SJoe Eykholt break; 7753726f358SJoe Eykholt } 7763726f358SJoe Eykholt mutex_unlock(&lport->lp_mutex); 7773726f358SJoe Eykholt } 7783726f358SJoe Eykholt EXPORT_SYMBOL(fc_lport_set_local_id); 7793726f358SJoe Eykholt 7803726f358SJoe Eykholt /** 78134f42a07SRobert Love * fc_lport_recv_flogi_req() - Receive a FLOGI request 78225985edcSLucas De Marchi * @lport: The local port that received the request 78392261156SJoe Eykholt * @rx_fp: The FLOGI frame 78442e9a92fSRobert Love * 78542e9a92fSRobert Love * A received FLOGI request indicates a point-to-point connection. 78642e9a92fSRobert Love * Accept it with the common service parameters indicating our N port. 78742e9a92fSRobert Love * Set up to do a PLOGI if we have the higher-number WWPN. 78842e9a92fSRobert Love */ 78992261156SJoe Eykholt static void fc_lport_recv_flogi_req(struct fc_lport *lport, 79092261156SJoe Eykholt struct fc_frame *rx_fp) 79142e9a92fSRobert Love { 79242e9a92fSRobert Love struct fc_frame *fp; 79324f089e2SJoe Eykholt struct fc_frame_header *fh; 79442e9a92fSRobert Love struct fc_els_flogi *flp; 79542e9a92fSRobert Love struct fc_els_flogi *new_flp; 79642e9a92fSRobert Love u64 remote_wwpn; 79742e9a92fSRobert Love u32 remote_fid; 79842e9a92fSRobert Love u32 local_fid; 79942e9a92fSRobert Love 800ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 801ee35624eSHannes Reinecke 8027414705eSRobert Love FC_LPORT_DBG(lport, "Received FLOGI request while in state %s\n", 80342e9a92fSRobert Love fc_lport_state(lport)); 80442e9a92fSRobert Love 805251748a9SJoe Eykholt remote_fid = fc_frame_sid(rx_fp); 80642e9a92fSRobert Love flp = fc_frame_payload_get(rx_fp, sizeof(*flp)); 80742e9a92fSRobert Love if (!flp) 80842e9a92fSRobert Love goto out; 80942e9a92fSRobert Love remote_wwpn = get_unaligned_be64(&flp->fl_wwpn); 81042e9a92fSRobert Love if (remote_wwpn == lport->wwpn) { 811e6d8a1b0SJoe Eykholt printk(KERN_WARNING "host%d: libfc: Received FLOGI from port " 8129f8f3aa6SChris Leech "with same WWPN %16.16llx\n", 813e6d8a1b0SJoe Eykholt lport->host->host_no, remote_wwpn); 81442e9a92fSRobert Love goto out; 81542e9a92fSRobert Love } 8169f8f3aa6SChris Leech FC_LPORT_DBG(lport, "FLOGI from port WWPN %16.16llx\n", remote_wwpn); 81742e9a92fSRobert Love 81842e9a92fSRobert Love /* 81942e9a92fSRobert Love * XXX what is the right thing to do for FIDs? 82042e9a92fSRobert Love * The originator might expect our S_ID to be 0xfffffe. 82142e9a92fSRobert Love * But if so, both of us could end up with the same FID. 82242e9a92fSRobert Love */ 82342e9a92fSRobert Love local_fid = FC_LOCAL_PTP_FID_LO; 82442e9a92fSRobert Love if (remote_wwpn < lport->wwpn) { 82542e9a92fSRobert Love local_fid = FC_LOCAL_PTP_FID_HI; 82642e9a92fSRobert Love if (!remote_fid || remote_fid == local_fid) 82742e9a92fSRobert Love remote_fid = FC_LOCAL_PTP_FID_LO; 82842e9a92fSRobert Love } else if (!remote_fid) { 82942e9a92fSRobert Love remote_fid = FC_LOCAL_PTP_FID_HI; 83042e9a92fSRobert Love } 83142e9a92fSRobert Love 832093bb6a2SJoe Eykholt fc_lport_set_port_id(lport, local_fid, rx_fp); 83342e9a92fSRobert Love 83442e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(*flp)); 83542e9a92fSRobert Love if (fp) { 83642e9a92fSRobert Love new_flp = fc_frame_payload_get(fp, sizeof(*flp)); 83742e9a92fSRobert Love fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI); 83842e9a92fSRobert Love new_flp->fl_cmd = (u8) ELS_LS_ACC; 83942e9a92fSRobert Love 84042e9a92fSRobert Love /* 84142e9a92fSRobert Love * Send the response. If this fails, the originator should 84242e9a92fSRobert Love * repeat the sequence. 84342e9a92fSRobert Love */ 84424f089e2SJoe Eykholt fc_fill_reply_hdr(fp, rx_fp, FC_RCTL_ELS_REP, 0); 84524f089e2SJoe Eykholt fh = fc_frame_header_get(fp); 84624f089e2SJoe Eykholt hton24(fh->fh_s_id, local_fid); 84724f089e2SJoe Eykholt hton24(fh->fh_d_id, remote_fid); 84824f089e2SJoe Eykholt lport->tt.frame_send(lport, fp); 84942e9a92fSRobert Love 85042e9a92fSRobert Love } else { 85142e9a92fSRobert Love fc_lport_error(lport, fp); 85242e9a92fSRobert Love } 85342e9a92fSRobert Love fc_lport_ptp_setup(lport, remote_fid, remote_wwpn, 85442e9a92fSRobert Love get_unaligned_be64(&flp->fl_wwnn)); 85542e9a92fSRobert Love out: 85642e9a92fSRobert Love fc_frame_free(rx_fp); 85742e9a92fSRobert Love } 85842e9a92fSRobert Love 85942e9a92fSRobert Love /** 86096ad8464SJoe Eykholt * fc_lport_recv_els_req() - The generic lport ELS request handler 8613a3b42bfSRobert Love * @lport: The local port that received the request 8623a3b42bfSRobert Love * @fp: The request frame 86342e9a92fSRobert Love * 86442e9a92fSRobert Love * This function will see if the lport handles the request or 86542e9a92fSRobert Love * if an rport should handle the request. 86642e9a92fSRobert Love * 86742e9a92fSRobert Love * Locking Note: This function should not be called with the lport 86825985edcSLucas De Marchi * lock held because it will grab the lock. 86942e9a92fSRobert Love */ 87096ad8464SJoe Eykholt static void fc_lport_recv_els_req(struct fc_lport *lport, 87196ad8464SJoe Eykholt struct fc_frame *fp) 87242e9a92fSRobert Love { 87342e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 87442e9a92fSRobert Love 87542e9a92fSRobert Love /* 87642e9a92fSRobert Love * Handle special ELS cases like FLOGI, LOGO, and 87742e9a92fSRobert Love * RSCN here. These don't require a session. 87842e9a92fSRobert Love * Even if we had a session, it might not be ready. 87942e9a92fSRobert Love */ 880e9ba8b42SJoe Eykholt if (!lport->link_up) 881e9ba8b42SJoe Eykholt fc_frame_free(fp); 88296ad8464SJoe Eykholt else { 88342e9a92fSRobert Love /* 88442e9a92fSRobert Love * Check opcode. 88542e9a92fSRobert Love */ 88642e9a92fSRobert Love switch (fc_frame_payload_op(fp)) { 88742e9a92fSRobert Love case ELS_FLOGI: 888a7b12a27SJoe Eykholt if (!lport->point_to_multipoint) 889fcabb09eSJohannes Thumshirn fc_lport_recv_flogi_req(lport, fp); 890fe55e795SMartin Wilck else 891fe55e795SMartin Wilck fc_rport_recv_req(lport, fp); 89242e9a92fSRobert Love break; 89342e9a92fSRobert Love case ELS_LOGO: 894251748a9SJoe Eykholt if (fc_frame_sid(fp) == FC_FID_FLOGI) 895fcabb09eSJohannes Thumshirn fc_lport_recv_logo_req(lport, fp); 896fe55e795SMartin Wilck else 897fe55e795SMartin Wilck fc_rport_recv_req(lport, fp); 89842e9a92fSRobert Love break; 89942e9a92fSRobert Love case ELS_RSCN: 900fcabb09eSJohannes Thumshirn lport->tt.disc_recv_req(lport, fp); 90142e9a92fSRobert Love break; 90242e9a92fSRobert Love case ELS_ECHO: 903fcabb09eSJohannes Thumshirn fc_lport_recv_echo_req(lport, fp); 90442e9a92fSRobert Love break; 90542e9a92fSRobert Love case ELS_RLIR: 906fcabb09eSJohannes Thumshirn fc_lport_recv_rlir_req(lport, fp); 90742e9a92fSRobert Love break; 90842e9a92fSRobert Love case ELS_RNID: 909fcabb09eSJohannes Thumshirn fc_lport_recv_rnid_req(lport, fp); 910fcabb09eSJohannes Thumshirn break; 911fcabb09eSJohannes Thumshirn default: 912fcabb09eSJohannes Thumshirn fc_rport_recv_req(lport, fp); 91342e9a92fSRobert Love break; 91442e9a92fSRobert Love } 91542e9a92fSRobert Love } 91642e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 91742e9a92fSRobert Love } 91842e9a92fSRobert Love 91996ad8464SJoe Eykholt static int fc_lport_els_prli(struct fc_rport_priv *rdata, u32 spp_len, 92096ad8464SJoe Eykholt const struct fc_els_spp *spp_in, 92196ad8464SJoe Eykholt struct fc_els_spp *spp_out) 92296ad8464SJoe Eykholt { 92396ad8464SJoe Eykholt return FC_SPP_RESP_INVL; 92496ad8464SJoe Eykholt } 92596ad8464SJoe Eykholt 92696ad8464SJoe Eykholt struct fc4_prov fc_lport_els_prov = { 92796ad8464SJoe Eykholt .prli = fc_lport_els_prli, 92896ad8464SJoe Eykholt .recv = fc_lport_recv_els_req, 92996ad8464SJoe Eykholt }; 93096ad8464SJoe Eykholt 93196ad8464SJoe Eykholt /** 932c5cb444cSHannes Reinecke * fc_lport_recv() - The generic lport request handler 93396ad8464SJoe Eykholt * @lport: The lport that received the request 93496ad8464SJoe Eykholt * @fp: The frame the request is in 93596ad8464SJoe Eykholt * 93696ad8464SJoe Eykholt * Locking Note: This function should not be called with the lport 93725985edcSLucas De Marchi * lock held because it may grab the lock. 93896ad8464SJoe Eykholt */ 939c5cb444cSHannes Reinecke void fc_lport_recv(struct fc_lport *lport, struct fc_frame *fp) 94096ad8464SJoe Eykholt { 94196ad8464SJoe Eykholt struct fc_frame_header *fh = fc_frame_header_get(fp); 94296ad8464SJoe Eykholt struct fc_seq *sp = fr_seq(fp); 94396ad8464SJoe Eykholt struct fc4_prov *prov; 94496ad8464SJoe Eykholt 94596ad8464SJoe Eykholt /* 94696ad8464SJoe Eykholt * Use RCU read lock and module_lock to be sure module doesn't 94796ad8464SJoe Eykholt * deregister and get unloaded while we're calling it. 94896ad8464SJoe Eykholt * try_module_get() is inlined and accepts a NULL parameter. 94996ad8464SJoe Eykholt * Only ELSes and FCP target ops should come through here. 95096ad8464SJoe Eykholt * The locking is unfortunate, and a better scheme is being sought. 95196ad8464SJoe Eykholt */ 95296ad8464SJoe Eykholt 95396ad8464SJoe Eykholt rcu_read_lock(); 95496ad8464SJoe Eykholt if (fh->fh_type >= FC_FC4_PROV_SIZE) 95596ad8464SJoe Eykholt goto drop; 95696ad8464SJoe Eykholt prov = rcu_dereference(fc_passive_prov[fh->fh_type]); 95796ad8464SJoe Eykholt if (!prov || !try_module_get(prov->module)) 95896ad8464SJoe Eykholt goto drop; 95996ad8464SJoe Eykholt rcu_read_unlock(); 96096ad8464SJoe Eykholt prov->recv(lport, fp); 96196ad8464SJoe Eykholt module_put(prov->module); 96296ad8464SJoe Eykholt return; 96396ad8464SJoe Eykholt drop: 96496ad8464SJoe Eykholt rcu_read_unlock(); 96596ad8464SJoe Eykholt FC_LPORT_DBG(lport, "dropping unexpected frame type %x\n", fh->fh_type); 96696ad8464SJoe Eykholt fc_frame_free(fp); 967db95fc00SYi Zou if (sp) 968768c72ccSHannes Reinecke fc_exch_done(sp); 96996ad8464SJoe Eykholt } 970c5cb444cSHannes Reinecke EXPORT_SYMBOL(fc_lport_recv); 97196ad8464SJoe Eykholt 97242e9a92fSRobert Love /** 9733a3b42bfSRobert Love * fc_lport_reset() - Reset a local port 9743a3b42bfSRobert Love * @lport: The local port which should be reset 97542e9a92fSRobert Love * 97642e9a92fSRobert Love * Locking Note: This functions should not be called with the 97742e9a92fSRobert Love * lport lock held. 97842e9a92fSRobert Love */ 97942e9a92fSRobert Love int fc_lport_reset(struct fc_lport *lport) 98042e9a92fSRobert Love { 981f7db2c15SSteve Ma cancel_delayed_work_sync(&lport->retry_work); 98242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 98342e9a92fSRobert Love fc_lport_enter_reset(lport); 98442e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 98542e9a92fSRobert Love return 0; 98642e9a92fSRobert Love } 98742e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_reset); 98842e9a92fSRobert Love 98942e9a92fSRobert Love /** 9903a3b42bfSRobert Love * fc_lport_reset_locked() - Reset the local port w/ the lport lock held 9913a3b42bfSRobert Love * @lport: The local port to be reset 99242e9a92fSRobert Love */ 9931190d925SJoe Eykholt static void fc_lport_reset_locked(struct fc_lport *lport) 99442e9a92fSRobert Love { 995ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 996ee35624eSHannes Reinecke 997a407c593SHannes Reinecke if (lport->dns_rdata) { 998c96c792aSHannes Reinecke fc_rport_logoff(lport->dns_rdata); 999a407c593SHannes Reinecke lport->dns_rdata = NULL; 1000a407c593SHannes Reinecke } 100142e9a92fSRobert Love 10022f2ac4a0SJoe Eykholt if (lport->ptp_rdata) { 1003c96c792aSHannes Reinecke fc_rport_logoff(lport->ptp_rdata); 1004944ef968SHannes Reinecke kref_put(&lport->ptp_rdata->kref, fc_rport_destroy); 10053a3b42bfSRobert Love lport->ptp_rdata = NULL; 10062f2ac4a0SJoe Eykholt } 100742e9a92fSRobert Love 100842e9a92fSRobert Love lport->tt.disc_stop(lport); 100942e9a92fSRobert Love 10101f6ff364SAbhijeet Joglekar lport->tt.exch_mgr_reset(lport, 0, 0); 101142e9a92fSRobert Love fc_host_fabric_name(lport->host) = 0; 1012093bb6a2SJoe Eykholt 10133726f358SJoe Eykholt if (lport->port_id && (!lport->point_to_multipoint || !lport->link_up)) 1014093bb6a2SJoe Eykholt fc_lport_set_port_id(lport, 0, NULL); 10151190d925SJoe Eykholt } 101642e9a92fSRobert Love 10171190d925SJoe Eykholt /** 10181190d925SJoe Eykholt * fc_lport_enter_reset() - Reset the local port 10193a3b42bfSRobert Love * @lport: The local port to be reset 10201190d925SJoe Eykholt */ 10211190d925SJoe Eykholt static void fc_lport_enter_reset(struct fc_lport *lport) 10221190d925SJoe Eykholt { 1023ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 1024ee35624eSHannes Reinecke 10251190d925SJoe Eykholt FC_LPORT_DBG(lport, "Entered RESET state from %s state\n", 10261190d925SJoe Eykholt fc_lport_state(lport)); 10271190d925SJoe Eykholt 102855a66d3cSVasu Dev if (lport->state == LPORT_ST_DISABLED || lport->state == LPORT_ST_LOGO) 102955a66d3cSVasu Dev return; 103055a66d3cSVasu Dev 10318faecddbSChris Leech if (lport->vport) { 10328faecddbSChris Leech if (lport->link_up) 10338faecddbSChris Leech fc_vport_set_state(lport->vport, FC_VPORT_INITIALIZING); 10348faecddbSChris Leech else 10358faecddbSChris Leech fc_vport_set_state(lport->vport, FC_VPORT_LINKDOWN); 10368faecddbSChris Leech } 10371190d925SJoe Eykholt fc_lport_state_enter(lport, LPORT_ST_RESET); 10389b7d1613SVasu Dev fc_host_post_event(lport->host, fc_get_event_number(), 10399b7d1613SVasu Dev FCH_EVT_LIPRESET, 0); 10408faecddbSChris Leech fc_vports_linkchange(lport); 10411190d925SJoe Eykholt fc_lport_reset_locked(lport); 1042b6e3c840SVasu Dev if (lport->link_up) 104342e9a92fSRobert Love fc_lport_enter_flogi(lport); 104442e9a92fSRobert Love } 104542e9a92fSRobert Love 104642e9a92fSRobert Love /** 10473a3b42bfSRobert Love * fc_lport_enter_disabled() - Disable the local port 10483a3b42bfSRobert Love * @lport: The local port to be reset 10491190d925SJoe Eykholt */ 10501190d925SJoe Eykholt static void fc_lport_enter_disabled(struct fc_lport *lport) 10511190d925SJoe Eykholt { 1052ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 1053ee35624eSHannes Reinecke 10541190d925SJoe Eykholt FC_LPORT_DBG(lport, "Entered disabled state from %s state\n", 10551190d925SJoe Eykholt fc_lport_state(lport)); 10561190d925SJoe Eykholt 10571190d925SJoe Eykholt fc_lport_state_enter(lport, LPORT_ST_DISABLED); 10588faecddbSChris Leech fc_vports_linkchange(lport); 10591190d925SJoe Eykholt fc_lport_reset_locked(lport); 10601190d925SJoe Eykholt } 10611190d925SJoe Eykholt 10621190d925SJoe Eykholt /** 106334f42a07SRobert Love * fc_lport_error() - Handler for any errors 10643a3b42bfSRobert Love * @lport: The local port that the error was on 10653a3b42bfSRobert Love * @fp: The error code encoded in a frame pointer 106642e9a92fSRobert Love * 106742e9a92fSRobert Love * If the error was caused by a resource allocation failure 106842e9a92fSRobert Love * then wait for half a second and retry, otherwise retry 106942e9a92fSRobert Love * after the e_d_tov time. 107042e9a92fSRobert Love */ 107142e9a92fSRobert Love static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp) 107242e9a92fSRobert Love { 107342e9a92fSRobert Love unsigned long delay = 0; 10747414705eSRobert Love FC_LPORT_DBG(lport, "Error %ld in state %s, retries %d\n", 1075b20d9bfdSBart Van Assche IS_ERR(fp) ? -PTR_ERR(fp) : 0, fc_lport_state(lport), 107642e9a92fSRobert Love lport->retry_count); 107742e9a92fSRobert Love 10787f985231SBhanu Prakash Gollapudi if (PTR_ERR(fp) == -FC_EX_CLOSED) 10797f985231SBhanu Prakash Gollapudi return; 10807f985231SBhanu Prakash Gollapudi 108142e9a92fSRobert Love /* 10827f985231SBhanu Prakash Gollapudi * Memory allocation failure, or the exchange timed out 10837f985231SBhanu Prakash Gollapudi * or we received LS_RJT. 108442e9a92fSRobert Love * Retry after delay 108542e9a92fSRobert Love */ 108642e9a92fSRobert Love if (lport->retry_count < lport->max_retry_count) { 108742e9a92fSRobert Love lport->retry_count++; 108842e9a92fSRobert Love if (!fp) 108942e9a92fSRobert Love delay = msecs_to_jiffies(500); 109042e9a92fSRobert Love else 109142e9a92fSRobert Love delay = msecs_to_jiffies(lport->e_d_tov); 109242e9a92fSRobert Love 109342e9a92fSRobert Love schedule_delayed_work(&lport->retry_work, delay); 10947f985231SBhanu Prakash Gollapudi } else 109542e9a92fSRobert Love fc_lport_enter_reset(lport); 109642e9a92fSRobert Love } 109742e9a92fSRobert Love 109842e9a92fSRobert Love /** 10997cccc157SChris Leech * fc_lport_ns_resp() - Handle response to a name server 11007cccc157SChris Leech * registration exchange 11017cccc157SChris Leech * @sp: current sequence in exchange 110242e9a92fSRobert Love * @fp: response frame 110342e9a92fSRobert Love * @lp_arg: Fibre Channel host port instance 110442e9a92fSRobert Love * 110542e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 11063a3b42bfSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error() 110742e9a92fSRobert Love * and then unlock the lport. 110842e9a92fSRobert Love */ 11097cccc157SChris Leech static void fc_lport_ns_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 struct fc_frame_header *fh; 111442e9a92fSRobert Love struct fc_ct_hdr *ct; 111542e9a92fSRobert Love 11167cccc157SChris Leech FC_LPORT_DBG(lport, "Received a ns %s\n", fc_els_resp_type(fp)); 1117f657d299SJoe Eykholt 111842e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 111942e9a92fSRobert Love return; 112042e9a92fSRobert Love 112142e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 112242e9a92fSRobert Love 1123ab593b18SJoe Eykholt if (lport->state < LPORT_ST_RNN_ID || lport->state > LPORT_ST_RFF_ID) { 11247cccc157SChris Leech FC_LPORT_DBG(lport, "Received a name server response, " 11257cccc157SChris Leech "but in state %s\n", fc_lport_state(lport)); 112676f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 112776f6804eSAbhijeet Joglekar goto err; 112842e9a92fSRobert Love goto out; 112942e9a92fSRobert Love } 113042e9a92fSRobert Love 113176f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 113276f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 113376f6804eSAbhijeet Joglekar goto err; 113476f6804eSAbhijeet Joglekar } 113576f6804eSAbhijeet Joglekar 113642e9a92fSRobert Love fh = fc_frame_header_get(fp); 113742e9a92fSRobert Love ct = fc_frame_payload_get(fp, sizeof(*ct)); 113842e9a92fSRobert Love 113942e9a92fSRobert Love if (fh && ct && fh->fh_type == FC_TYPE_CT && 114042e9a92fSRobert Love ct->ct_fs_type == FC_FST_DIR && 114142e9a92fSRobert Love ct->ct_fs_subtype == FC_NS_SUBTYPE && 114242e9a92fSRobert Love ntohs(ct->ct_cmd) == FC_FS_ACC) 11437cccc157SChris Leech switch (lport->state) { 11447cccc157SChris Leech case LPORT_ST_RNN_ID: 1145c914f7d1SChris Leech fc_lport_enter_ns(lport, LPORT_ST_RSNN_NN); 11467cccc157SChris Leech break; 11477cccc157SChris Leech case LPORT_ST_RSNN_NN: 1148c914f7d1SChris Leech fc_lport_enter_ns(lport, LPORT_ST_RSPN_ID); 11497cccc157SChris Leech break; 11507cccc157SChris Leech case LPORT_ST_RSPN_ID: 1151c914f7d1SChris Leech fc_lport_enter_ns(lport, LPORT_ST_RFT_ID); 11527cccc157SChris Leech break; 11537cccc157SChris Leech case LPORT_ST_RFT_ID: 1154ab593b18SJoe Eykholt fc_lport_enter_ns(lport, LPORT_ST_RFF_ID); 1155ab593b18SJoe Eykholt break; 1156ab593b18SJoe Eykholt case LPORT_ST_RFF_ID: 1157d78c317fSNeerav Parikh if (lport->fdmi_enabled) 1158d78c317fSNeerav Parikh fc_lport_enter_fdmi(lport); 1159d78c317fSNeerav Parikh else 11607cccc157SChris Leech fc_lport_enter_scr(lport); 11617cccc157SChris Leech break; 11627cccc157SChris Leech default: 11637cccc157SChris Leech /* should have already been caught by state checks */ 11647cccc157SChris Leech break; 11657cccc157SChris Leech } 1166c9c7bd7aSChris Leech else 1167c9c7bd7aSChris Leech fc_lport_error(lport, fp); 1168c9c7bd7aSChris Leech out: 1169c9c7bd7aSChris Leech fc_frame_free(fp); 1170c9c7bd7aSChris Leech err: 1171c9c7bd7aSChris Leech mutex_unlock(&lport->lp_mutex); 1172c9c7bd7aSChris Leech } 1173c9c7bd7aSChris Leech 1174c9c7bd7aSChris Leech /** 1175d78c317fSNeerav Parikh * fc_lport_ms_resp() - Handle response to a management server 1176d78c317fSNeerav Parikh * exchange 1177d78c317fSNeerav Parikh * @sp: current sequence in exchange 1178d78c317fSNeerav Parikh * @fp: response frame 1179d78c317fSNeerav Parikh * @lp_arg: Fibre Channel host port instance 1180d78c317fSNeerav Parikh * 1181d78c317fSNeerav Parikh * Locking Note: This function will be called without the lport lock 1182d78c317fSNeerav Parikh * held, but it will lock, call an _enter_* function or fc_lport_error() 1183d78c317fSNeerav Parikh * and then unlock the lport. 1184d78c317fSNeerav Parikh */ 1185d78c317fSNeerav Parikh static void fc_lport_ms_resp(struct fc_seq *sp, struct fc_frame *fp, 1186d78c317fSNeerav Parikh void *lp_arg) 1187d78c317fSNeerav Parikh { 1188d78c317fSNeerav Parikh struct fc_lport *lport = lp_arg; 1189d78c317fSNeerav Parikh struct fc_frame_header *fh; 1190d78c317fSNeerav Parikh struct fc_ct_hdr *ct; 1191d78c317fSNeerav Parikh 1192d78c317fSNeerav Parikh FC_LPORT_DBG(lport, "Received a ms %s\n", fc_els_resp_type(fp)); 1193d78c317fSNeerav Parikh 1194d78c317fSNeerav Parikh if (fp == ERR_PTR(-FC_EX_CLOSED)) 1195d78c317fSNeerav Parikh return; 1196d78c317fSNeerav Parikh 1197d78c317fSNeerav Parikh mutex_lock(&lport->lp_mutex); 1198d78c317fSNeerav Parikh 1199d78c317fSNeerav Parikh if (lport->state < LPORT_ST_RHBA || lport->state > LPORT_ST_DPRT) { 1200d78c317fSNeerav Parikh FC_LPORT_DBG(lport, "Received a management server response, " 1201d78c317fSNeerav Parikh "but in state %s\n", fc_lport_state(lport)); 1202d78c317fSNeerav Parikh if (IS_ERR(fp)) 1203d78c317fSNeerav Parikh goto err; 1204d78c317fSNeerav Parikh goto out; 1205d78c317fSNeerav Parikh } 1206d78c317fSNeerav Parikh 1207d78c317fSNeerav Parikh if (IS_ERR(fp)) { 1208d78c317fSNeerav Parikh fc_lport_error(lport, fp); 1209d78c317fSNeerav Parikh goto err; 1210d78c317fSNeerav Parikh } 1211d78c317fSNeerav Parikh 1212d78c317fSNeerav Parikh fh = fc_frame_header_get(fp); 1213d78c317fSNeerav Parikh ct = fc_frame_payload_get(fp, sizeof(*ct)); 1214d78c317fSNeerav Parikh 1215d78c317fSNeerav Parikh if (fh && ct && fh->fh_type == FC_TYPE_CT && 1216d78c317fSNeerav Parikh ct->ct_fs_type == FC_FST_MGMT && 1217d78c317fSNeerav Parikh ct->ct_fs_subtype == FC_FDMI_SUBTYPE) { 1218d78c317fSNeerav Parikh FC_LPORT_DBG(lport, "Received a management server response, " 1219d78c317fSNeerav Parikh "reason=%d explain=%d\n", 1220d78c317fSNeerav Parikh ct->ct_reason, 1221d78c317fSNeerav Parikh ct->ct_explan); 1222d78c317fSNeerav Parikh 1223d78c317fSNeerav Parikh switch (lport->state) { 1224d78c317fSNeerav Parikh case LPORT_ST_RHBA: 1225d78c317fSNeerav Parikh if (ntohs(ct->ct_cmd) == FC_FS_ACC) 1226d78c317fSNeerav Parikh fc_lport_enter_ms(lport, LPORT_ST_RPA); 1227d78c317fSNeerav Parikh else /* Error Skip RPA */ 1228d78c317fSNeerav Parikh fc_lport_enter_scr(lport); 1229d78c317fSNeerav Parikh break; 1230d78c317fSNeerav Parikh case LPORT_ST_RPA: 1231d78c317fSNeerav Parikh fc_lport_enter_scr(lport); 1232d78c317fSNeerav Parikh break; 1233d78c317fSNeerav Parikh case LPORT_ST_DPRT: 1234d78c317fSNeerav Parikh fc_lport_enter_ms(lport, LPORT_ST_RHBA); 1235d78c317fSNeerav Parikh break; 1236d78c317fSNeerav Parikh case LPORT_ST_DHBA: 1237d78c317fSNeerav Parikh fc_lport_enter_ms(lport, LPORT_ST_DPRT); 1238d78c317fSNeerav Parikh break; 1239d78c317fSNeerav Parikh default: 1240d78c317fSNeerav Parikh /* should have already been caught by state checks */ 1241d78c317fSNeerav Parikh break; 1242d78c317fSNeerav Parikh } 1243d78c317fSNeerav Parikh } else { 1244d78c317fSNeerav Parikh /* Invalid Frame? */ 1245d78c317fSNeerav Parikh fc_lport_error(lport, fp); 1246d78c317fSNeerav Parikh } 1247d78c317fSNeerav Parikh out: 1248d78c317fSNeerav Parikh fc_frame_free(fp); 1249d78c317fSNeerav Parikh err: 1250d78c317fSNeerav Parikh mutex_unlock(&lport->lp_mutex); 1251d78c317fSNeerav Parikh } 1252d78c317fSNeerav Parikh 1253d78c317fSNeerav Parikh /** 125434f42a07SRobert Love * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request 125542e9a92fSRobert Love * @sp: current sequence in SCR exchange 125642e9a92fSRobert Love * @fp: response frame 125742e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the registration request 125842e9a92fSRobert Love * 125942e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 126042e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 126142e9a92fSRobert Love * and then unlock the lport. 126242e9a92fSRobert Love */ 126342e9a92fSRobert Love static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp, 126442e9a92fSRobert Love void *lp_arg) 126542e9a92fSRobert Love { 126642e9a92fSRobert Love struct fc_lport *lport = lp_arg; 126742e9a92fSRobert Love u8 op; 126842e9a92fSRobert Love 1269f657d299SJoe Eykholt FC_LPORT_DBG(lport, "Received a SCR %s\n", fc_els_resp_type(fp)); 1270f657d299SJoe Eykholt 127142e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 127242e9a92fSRobert Love return; 127342e9a92fSRobert Love 127442e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 127542e9a92fSRobert Love 127642e9a92fSRobert Love if (lport->state != LPORT_ST_SCR) { 12777414705eSRobert Love FC_LPORT_DBG(lport, "Received a SCR response, but in state " 12787414705eSRobert Love "%s\n", fc_lport_state(lport)); 127976f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 128076f6804eSAbhijeet Joglekar goto err; 128142e9a92fSRobert Love goto out; 128242e9a92fSRobert Love } 128342e9a92fSRobert Love 128476f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 128576f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 128676f6804eSAbhijeet Joglekar goto err; 128776f6804eSAbhijeet Joglekar } 128876f6804eSAbhijeet Joglekar 128942e9a92fSRobert Love op = fc_frame_payload_op(fp); 129042e9a92fSRobert Love if (op == ELS_LS_ACC) 129142e9a92fSRobert Love fc_lport_enter_ready(lport); 129242e9a92fSRobert Love else 129342e9a92fSRobert Love fc_lport_error(lport, fp); 129442e9a92fSRobert Love 129542e9a92fSRobert Love out: 129642e9a92fSRobert Love fc_frame_free(fp); 129742e9a92fSRobert Love err: 129842e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 129942e9a92fSRobert Love } 130042e9a92fSRobert Love 130142e9a92fSRobert Love /** 13023a3b42bfSRobert Love * fc_lport_enter_scr() - Send a SCR (State Change Register) request 13033a3b42bfSRobert Love * @lport: The local port to register for state changes 130442e9a92fSRobert Love */ 130542e9a92fSRobert Love static void fc_lport_enter_scr(struct fc_lport *lport) 130642e9a92fSRobert Love { 130742e9a92fSRobert Love struct fc_frame *fp; 130842e9a92fSRobert Love 1309ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 1310ee35624eSHannes Reinecke 13117414705eSRobert Love FC_LPORT_DBG(lport, "Entered SCR state from %s state\n", 13127414705eSRobert Love fc_lport_state(lport)); 131342e9a92fSRobert Love 131442e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_SCR); 131542e9a92fSRobert Love 131642e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr)); 131742e9a92fSRobert Love if (!fp) { 131842e9a92fSRobert Love fc_lport_error(lport, fp); 131942e9a92fSRobert Love return; 132042e9a92fSRobert Love } 132142e9a92fSRobert Love 1322a46f327aSJoe Eykholt if (!lport->tt.elsct_send(lport, FC_FID_FCTRL, fp, ELS_SCR, 1323b94f8951SJoe Eykholt fc_lport_scr_resp, lport, 1324b94f8951SJoe Eykholt 2 * lport->r_a_tov)) 13258f550f93SChris Leech fc_lport_error(lport, NULL); 132642e9a92fSRobert Love } 132742e9a92fSRobert Love 132842e9a92fSRobert Love /** 1329c914f7d1SChris Leech * fc_lport_enter_ns() - register some object with the name server 133042e9a92fSRobert Love * @lport: Fibre Channel local port to register 13319865a04dSLee Jones * @state: Local port state 133242e9a92fSRobert Love */ 1333c914f7d1SChris Leech static void fc_lport_enter_ns(struct fc_lport *lport, enum fc_lport_state state) 133442e9a92fSRobert Love { 133542e9a92fSRobert Love struct fc_frame *fp; 1336c914f7d1SChris Leech enum fc_ns_req cmd; 1337c914f7d1SChris Leech int size = sizeof(struct fc_ct_hdr); 1338c914f7d1SChris Leech size_t len; 133942e9a92fSRobert Love 1340ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 1341ee35624eSHannes Reinecke 1342c914f7d1SChris Leech FC_LPORT_DBG(lport, "Entered %s state from %s state\n", 1343c914f7d1SChris Leech fc_lport_state_names[state], 13447414705eSRobert Love fc_lport_state(lport)); 134542e9a92fSRobert Love 1346c914f7d1SChris Leech fc_lport_state_enter(lport, state); 134742e9a92fSRobert Love 1348c914f7d1SChris Leech switch (state) { 1349c914f7d1SChris Leech case LPORT_ST_RNN_ID: 1350c914f7d1SChris Leech cmd = FC_NS_RNN_ID; 1351c914f7d1SChris Leech size += sizeof(struct fc_ns_rn_id); 135242e9a92fSRobert Love break; 1353c914f7d1SChris Leech case LPORT_ST_RSNN_NN: 1354c9866a54SChris Leech len = strnlen(fc_host_symbolic_name(lport->host), 255); 1355c914f7d1SChris Leech /* if there is no symbolic name, skip to RFT_ID */ 1356c914f7d1SChris Leech if (!len) 1357c914f7d1SChris Leech return fc_lport_enter_ns(lport, LPORT_ST_RFT_ID); 1358c914f7d1SChris Leech cmd = FC_NS_RSNN_NN; 1359c914f7d1SChris Leech size += sizeof(struct fc_ns_rsnn) + len; 1360c914f7d1SChris Leech break; 1361c914f7d1SChris Leech case LPORT_ST_RSPN_ID: 13625baa17c3SChris Leech len = strnlen(fc_host_symbolic_name(lport->host), 255); 1363c914f7d1SChris Leech /* if there is no symbolic name, skip to RFT_ID */ 1364c914f7d1SChris Leech if (!len) 1365c914f7d1SChris Leech return fc_lport_enter_ns(lport, LPORT_ST_RFT_ID); 1366c914f7d1SChris Leech cmd = FC_NS_RSPN_ID; 1367c914f7d1SChris Leech size += sizeof(struct fc_ns_rspn) + len; 1368c914f7d1SChris Leech break; 1369c914f7d1SChris Leech case LPORT_ST_RFT_ID: 1370c914f7d1SChris Leech cmd = FC_NS_RFT_ID; 1371c914f7d1SChris Leech size += sizeof(struct fc_ns_rft); 1372c914f7d1SChris Leech break; 1373ab593b18SJoe Eykholt case LPORT_ST_RFF_ID: 1374ab593b18SJoe Eykholt cmd = FC_NS_RFF_ID; 1375ab593b18SJoe Eykholt size += sizeof(struct fc_ns_rff_id); 1376ab593b18SJoe Eykholt break; 1377c914f7d1SChris Leech default: 1378c914f7d1SChris Leech fc_lport_error(lport, NULL); 1379c914f7d1SChris Leech return; 1380c914f7d1SChris Leech } 1381c914f7d1SChris Leech 1382c914f7d1SChris Leech fp = fc_frame_alloc(lport, size); 13835baa17c3SChris Leech if (!fp) { 13845baa17c3SChris Leech fc_lport_error(lport, fp); 13855baa17c3SChris Leech return; 13865baa17c3SChris Leech } 13875baa17c3SChris Leech 1388c914f7d1SChris Leech if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, cmd, 13897cccc157SChris Leech fc_lport_ns_resp, 1390b94f8951SJoe Eykholt lport, 3 * lport->r_a_tov)) 1391c9c7bd7aSChris Leech fc_lport_error(lport, fp); 1392c9c7bd7aSChris Leech } 1393c9c7bd7aSChris Leech 139442e9a92fSRobert Love static struct fc_rport_operations fc_lport_rport_ops = { 139542e9a92fSRobert Love .event_callback = fc_lport_rport_callback, 139642e9a92fSRobert Love }; 139742e9a92fSRobert Love 139842e9a92fSRobert Love /** 13994a4db603SLee Jones * fc_lport_enter_dns() - Create a fc_rport for the name server 14003a3b42bfSRobert Love * @lport: The local port requesting a remote port for the name server 140142e9a92fSRobert Love */ 140242e9a92fSRobert Love static void fc_lport_enter_dns(struct fc_lport *lport) 140342e9a92fSRobert Love { 1404ab28f1fdSJoe Eykholt struct fc_rport_priv *rdata; 140542e9a92fSRobert Love 1406ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 1407ee35624eSHannes Reinecke 14087414705eSRobert Love FC_LPORT_DBG(lport, "Entered DNS state from %s state\n", 14097414705eSRobert Love fc_lport_state(lport)); 141042e9a92fSRobert Love 141142e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_DNS); 141242e9a92fSRobert Love 141348f00902SJoe Eykholt mutex_lock(&lport->disc.disc_mutex); 14142580064bSHannes Reinecke rdata = fc_rport_create(lport, FC_FID_DIR_SERV); 141548f00902SJoe Eykholt mutex_unlock(&lport->disc.disc_mutex); 14169fb9d328SJoe Eykholt if (!rdata) 141742e9a92fSRobert Love goto err; 141842e9a92fSRobert Love 141942e9a92fSRobert Love rdata->ops = &fc_lport_rport_ops; 142005d7d3b0SHannes Reinecke fc_rport_login(rdata); 142142e9a92fSRobert Love return; 142242e9a92fSRobert Love 142342e9a92fSRobert Love err: 142442e9a92fSRobert Love fc_lport_error(lport, NULL); 142542e9a92fSRobert Love } 142642e9a92fSRobert Love 142742e9a92fSRobert Love /** 1428d78c317fSNeerav Parikh * fc_lport_enter_ms() - management server commands 1429d78c317fSNeerav Parikh * @lport: Fibre Channel local port to register 14309865a04dSLee Jones * @state: Local port state 1431d78c317fSNeerav Parikh */ 1432d78c317fSNeerav Parikh static void fc_lport_enter_ms(struct fc_lport *lport, enum fc_lport_state state) 1433d78c317fSNeerav Parikh { 1434d78c317fSNeerav Parikh struct fc_frame *fp; 1435d78c317fSNeerav Parikh enum fc_fdmi_req cmd; 1436d78c317fSNeerav Parikh int size = sizeof(struct fc_ct_hdr); 1437d78c317fSNeerav Parikh size_t len; 1438d78c317fSNeerav Parikh int numattrs; 1439d78c317fSNeerav Parikh 1440ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 1441ee35624eSHannes Reinecke 1442d78c317fSNeerav Parikh FC_LPORT_DBG(lport, "Entered %s state from %s state\n", 1443d78c317fSNeerav Parikh fc_lport_state_names[state], 1444d78c317fSNeerav Parikh fc_lport_state(lport)); 1445d78c317fSNeerav Parikh 1446d78c317fSNeerav Parikh fc_lport_state_enter(lport, state); 1447d78c317fSNeerav Parikh 1448d78c317fSNeerav Parikh switch (state) { 1449d78c317fSNeerav Parikh case LPORT_ST_RHBA: 1450d78c317fSNeerav Parikh cmd = FC_FDMI_RHBA; 1451d78c317fSNeerav Parikh /* Number of HBA Attributes */ 1452d78c317fSNeerav Parikh numattrs = 10; 1453d78c317fSNeerav Parikh len = sizeof(struct fc_fdmi_rhba); 1454d78c317fSNeerav Parikh len -= sizeof(struct fc_fdmi_attr_entry); 1455d78c317fSNeerav Parikh len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN); 1456d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_NODENAME_LEN; 1457d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_MANUFACTURER_LEN; 1458d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN; 1459d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_MODEL_LEN; 1460d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_MODELDESCR_LEN; 1461d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN; 1462d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN; 1463d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN; 1464d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN; 1465d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN; 1466d78c317fSNeerav Parikh 1467d78c317fSNeerav Parikh size += len; 1468d78c317fSNeerav Parikh break; 1469d78c317fSNeerav Parikh case LPORT_ST_RPA: 1470d78c317fSNeerav Parikh cmd = FC_FDMI_RPA; 1471d78c317fSNeerav Parikh /* Number of Port Attributes */ 1472d78c317fSNeerav Parikh numattrs = 6; 1473d78c317fSNeerav Parikh len = sizeof(struct fc_fdmi_rpa); 1474d78c317fSNeerav Parikh len -= sizeof(struct fc_fdmi_attr_entry); 1475d78c317fSNeerav Parikh len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN); 1476d78c317fSNeerav Parikh len += FC_FDMI_PORT_ATTR_FC4TYPES_LEN; 1477d78c317fSNeerav Parikh len += FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN; 1478d78c317fSNeerav Parikh len += FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN; 1479d78c317fSNeerav Parikh len += FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN; 1480d78c317fSNeerav Parikh len += FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN; 1481d78c317fSNeerav Parikh len += FC_FDMI_PORT_ATTR_HOSTNAME_LEN; 1482d78c317fSNeerav Parikh 1483d78c317fSNeerav Parikh size += len; 1484d78c317fSNeerav Parikh break; 1485d78c317fSNeerav Parikh case LPORT_ST_DPRT: 1486d78c317fSNeerav Parikh cmd = FC_FDMI_DPRT; 1487d78c317fSNeerav Parikh len = sizeof(struct fc_fdmi_dprt); 1488d78c317fSNeerav Parikh size += len; 1489d78c317fSNeerav Parikh break; 1490d78c317fSNeerav Parikh case LPORT_ST_DHBA: 1491d78c317fSNeerav Parikh cmd = FC_FDMI_DHBA; 1492d78c317fSNeerav Parikh len = sizeof(struct fc_fdmi_dhba); 1493d78c317fSNeerav Parikh size += len; 1494d78c317fSNeerav Parikh break; 1495d78c317fSNeerav Parikh default: 1496d78c317fSNeerav Parikh fc_lport_error(lport, NULL); 1497d78c317fSNeerav Parikh return; 1498d78c317fSNeerav Parikh } 1499d78c317fSNeerav Parikh 1500d78c317fSNeerav Parikh FC_LPORT_DBG(lport, "Cmd=0x%x Len %d size %d\n", 1501d78c317fSNeerav Parikh cmd, (int)len, size); 1502d78c317fSNeerav Parikh fp = fc_frame_alloc(lport, size); 1503d78c317fSNeerav Parikh if (!fp) { 1504d78c317fSNeerav Parikh fc_lport_error(lport, fp); 1505d78c317fSNeerav Parikh return; 1506d78c317fSNeerav Parikh } 1507d78c317fSNeerav Parikh 1508d78c317fSNeerav Parikh if (!lport->tt.elsct_send(lport, FC_FID_MGMT_SERV, fp, cmd, 1509d78c317fSNeerav Parikh fc_lport_ms_resp, 1510d78c317fSNeerav Parikh lport, 3 * lport->r_a_tov)) 1511d78c317fSNeerav Parikh fc_lport_error(lport, fp); 1512d78c317fSNeerav Parikh } 1513d78c317fSNeerav Parikh 1514d78c317fSNeerav Parikh /** 15154a4db603SLee Jones * fc_lport_enter_fdmi() - Create a fc_rport for the management server 1516d78c317fSNeerav Parikh * @lport: The local port requesting a remote port for the management server 1517d78c317fSNeerav Parikh */ 1518d78c317fSNeerav Parikh static void fc_lport_enter_fdmi(struct fc_lport *lport) 1519d78c317fSNeerav Parikh { 1520d78c317fSNeerav Parikh struct fc_rport_priv *rdata; 1521d78c317fSNeerav Parikh 1522ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 1523ee35624eSHannes Reinecke 1524d78c317fSNeerav Parikh FC_LPORT_DBG(lport, "Entered FDMI state from %s state\n", 1525d78c317fSNeerav Parikh fc_lport_state(lport)); 1526d78c317fSNeerav Parikh 1527d78c317fSNeerav Parikh fc_lport_state_enter(lport, LPORT_ST_FDMI); 1528d78c317fSNeerav Parikh 1529d78c317fSNeerav Parikh mutex_lock(&lport->disc.disc_mutex); 15302580064bSHannes Reinecke rdata = fc_rport_create(lport, FC_FID_MGMT_SERV); 1531d78c317fSNeerav Parikh mutex_unlock(&lport->disc.disc_mutex); 1532d78c317fSNeerav Parikh if (!rdata) 1533d78c317fSNeerav Parikh goto err; 1534d78c317fSNeerav Parikh 1535d78c317fSNeerav Parikh rdata->ops = &fc_lport_rport_ops; 153605d7d3b0SHannes Reinecke fc_rport_login(rdata); 1537d78c317fSNeerav Parikh return; 1538d78c317fSNeerav Parikh 1539d78c317fSNeerav Parikh err: 1540d78c317fSNeerav Parikh fc_lport_error(lport, NULL); 1541d78c317fSNeerav Parikh } 1542d78c317fSNeerav Parikh 1543d78c317fSNeerav Parikh /** 15443a3b42bfSRobert Love * fc_lport_timeout() - Handler for the retry_work timer 15453a3b42bfSRobert Love * @work: The work struct of the local port 154642e9a92fSRobert Love */ 154742e9a92fSRobert Love static void fc_lport_timeout(struct work_struct *work) 154842e9a92fSRobert Love { 154942e9a92fSRobert Love struct fc_lport *lport = 155042e9a92fSRobert Love container_of(work, struct fc_lport, 155142e9a92fSRobert Love retry_work.work); 155242e9a92fSRobert Love 155342e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 155442e9a92fSRobert Love 155542e9a92fSRobert Love switch (lport->state) { 1556b1d9fd55SJoe Eykholt case LPORT_ST_DISABLED: 155742e9a92fSRobert Love break; 155822655ac2SJoe Eykholt case LPORT_ST_READY: 155922655ac2SJoe Eykholt break; 156022655ac2SJoe Eykholt case LPORT_ST_RESET: 156122655ac2SJoe Eykholt break; 156242e9a92fSRobert Love case LPORT_ST_FLOGI: 156342e9a92fSRobert Love fc_lport_enter_flogi(lport); 156442e9a92fSRobert Love break; 156542e9a92fSRobert Love case LPORT_ST_DNS: 156642e9a92fSRobert Love fc_lport_enter_dns(lport); 156742e9a92fSRobert Love break; 1568c9c7bd7aSChris Leech case LPORT_ST_RNN_ID: 15695baa17c3SChris Leech case LPORT_ST_RSNN_NN: 1570c9866a54SChris Leech case LPORT_ST_RSPN_ID: 157142e9a92fSRobert Love case LPORT_ST_RFT_ID: 1572ab593b18SJoe Eykholt case LPORT_ST_RFF_ID: 1573c914f7d1SChris Leech fc_lport_enter_ns(lport, lport->state); 157442e9a92fSRobert Love break; 1575d78c317fSNeerav Parikh case LPORT_ST_FDMI: 1576d78c317fSNeerav Parikh fc_lport_enter_fdmi(lport); 1577d78c317fSNeerav Parikh break; 1578d78c317fSNeerav Parikh case LPORT_ST_RHBA: 1579d78c317fSNeerav Parikh case LPORT_ST_RPA: 1580d78c317fSNeerav Parikh case LPORT_ST_DHBA: 1581d78c317fSNeerav Parikh case LPORT_ST_DPRT: 1582ac166d2fSVasu Dev FC_LPORT_DBG(lport, "Skipping lport state %s to SCR\n", 1583ac166d2fSVasu Dev fc_lport_state(lport)); 1584df561f66SGustavo A. R. Silva fallthrough; 158542e9a92fSRobert Love case LPORT_ST_SCR: 158642e9a92fSRobert Love fc_lport_enter_scr(lport); 158742e9a92fSRobert Love break; 158842e9a92fSRobert Love case LPORT_ST_LOGO: 158942e9a92fSRobert Love fc_lport_enter_logo(lport); 159042e9a92fSRobert Love break; 159142e9a92fSRobert Love } 159242e9a92fSRobert Love 159342e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 159442e9a92fSRobert Love } 159542e9a92fSRobert Love 159642e9a92fSRobert Love /** 159734f42a07SRobert Love * fc_lport_logo_resp() - Handle response to LOGO request 15983a3b42bfSRobert Love * @sp: The sequence that the LOGO was on 15993a3b42bfSRobert Love * @fp: The LOGO frame 16003a3b42bfSRobert Love * @lp_arg: The lport port that received the LOGO request 160142e9a92fSRobert Love * 160242e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 16033a3b42bfSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error() 160442e9a92fSRobert Love * and then unlock the lport. 160542e9a92fSRobert Love */ 160611b56188SChris Leech void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp, 160742e9a92fSRobert Love void *lp_arg) 160842e9a92fSRobert Love { 160942e9a92fSRobert Love struct fc_lport *lport = lp_arg; 161042e9a92fSRobert Love u8 op; 161142e9a92fSRobert Love 1612f657d299SJoe Eykholt FC_LPORT_DBG(lport, "Received a LOGO %s\n", fc_els_resp_type(fp)); 1613f657d299SJoe Eykholt 161442e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 161542e9a92fSRobert Love return; 161642e9a92fSRobert Love 161742e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 161842e9a92fSRobert Love 161942e9a92fSRobert Love if (lport->state != LPORT_ST_LOGO) { 16207414705eSRobert Love FC_LPORT_DBG(lport, "Received a LOGO response, but in state " 16217414705eSRobert Love "%s\n", fc_lport_state(lport)); 162276f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 162376f6804eSAbhijeet Joglekar goto err; 162442e9a92fSRobert Love goto out; 162542e9a92fSRobert Love } 162642e9a92fSRobert Love 162776f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 162876f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 162976f6804eSAbhijeet Joglekar goto err; 163076f6804eSAbhijeet Joglekar } 163176f6804eSAbhijeet Joglekar 163242e9a92fSRobert Love op = fc_frame_payload_op(fp); 163342e9a92fSRobert Love if (op == ELS_LS_ACC) 16341190d925SJoe Eykholt fc_lport_enter_disabled(lport); 163542e9a92fSRobert Love else 163642e9a92fSRobert Love fc_lport_error(lport, fp); 163742e9a92fSRobert Love 163842e9a92fSRobert Love out: 163942e9a92fSRobert Love fc_frame_free(fp); 164042e9a92fSRobert Love err: 164142e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 164242e9a92fSRobert Love } 164311b56188SChris Leech EXPORT_SYMBOL(fc_lport_logo_resp); 164442e9a92fSRobert Love 164542e9a92fSRobert Love /** 16464a4db603SLee Jones * fc_lport_enter_logo() - Logout of the fabric 16473a3b42bfSRobert Love * @lport: The local port to be logged out 164842e9a92fSRobert Love */ 164942e9a92fSRobert Love static void fc_lport_enter_logo(struct fc_lport *lport) 165042e9a92fSRobert Love { 165142e9a92fSRobert Love struct fc_frame *fp; 165242e9a92fSRobert Love struct fc_els_logo *logo; 165342e9a92fSRobert Love 1654ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 1655ee35624eSHannes Reinecke 16567414705eSRobert Love FC_LPORT_DBG(lport, "Entered LOGO state from %s state\n", 16577414705eSRobert Love fc_lport_state(lport)); 165842e9a92fSRobert Love 165942e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_LOGO); 16608faecddbSChris Leech fc_vports_linkchange(lport); 166142e9a92fSRobert Love 166242e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(*logo)); 166342e9a92fSRobert Love if (!fp) { 166442e9a92fSRobert Love fc_lport_error(lport, fp); 166542e9a92fSRobert Love return; 166642e9a92fSRobert Love } 166742e9a92fSRobert Love 1668a46f327aSJoe Eykholt if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, ELS_LOGO, 1669b94f8951SJoe Eykholt fc_lport_logo_resp, lport, 1670b94f8951SJoe Eykholt 2 * lport->r_a_tov)) 16718f550f93SChris Leech fc_lport_error(lport, NULL); 167242e9a92fSRobert Love } 167342e9a92fSRobert Love 167442e9a92fSRobert Love /** 167534f42a07SRobert Love * fc_lport_flogi_resp() - Handle response to FLOGI request 16763a3b42bfSRobert Love * @sp: The sequence that the FLOGI was on 16773a3b42bfSRobert Love * @fp: The FLOGI response frame 16783a3b42bfSRobert Love * @lp_arg: The lport port that received the FLOGI response 167942e9a92fSRobert Love * 168042e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 16813a3b42bfSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error() 168242e9a92fSRobert Love * and then unlock the lport. 168342e9a92fSRobert Love */ 168411b56188SChris Leech void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, 168542e9a92fSRobert Love void *lp_arg) 168642e9a92fSRobert Love { 168742e9a92fSRobert Love struct fc_lport *lport = lp_arg; 1688907c07d4SVasu Dev struct fc_frame_header *fh; 168942e9a92fSRobert Love struct fc_els_flogi *flp; 169042e9a92fSRobert Love u32 did; 169142e9a92fSRobert Love u16 csp_flags; 169242e9a92fSRobert Love unsigned int r_a_tov; 169342e9a92fSRobert Love unsigned int e_d_tov; 169442e9a92fSRobert Love u16 mfs; 169542e9a92fSRobert Love 1696f657d299SJoe Eykholt FC_LPORT_DBG(lport, "Received a FLOGI %s\n", fc_els_resp_type(fp)); 1697f657d299SJoe Eykholt 169842e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 169942e9a92fSRobert Love return; 170042e9a92fSRobert Love 170142e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 170242e9a92fSRobert Love 170342e9a92fSRobert Love if (lport->state != LPORT_ST_FLOGI) { 17047414705eSRobert Love FC_LPORT_DBG(lport, "Received a FLOGI response, but in state " 17057414705eSRobert Love "%s\n", fc_lport_state(lport)); 170676f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 170776f6804eSAbhijeet Joglekar goto err; 170842e9a92fSRobert Love goto out; 170942e9a92fSRobert Love } 171042e9a92fSRobert Love 171176f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 171276f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 171376f6804eSAbhijeet Joglekar goto err; 171476f6804eSAbhijeet Joglekar } 171576f6804eSAbhijeet Joglekar 1716907c07d4SVasu Dev fh = fc_frame_header_get(fp); 1717251748a9SJoe Eykholt did = fc_frame_did(fp); 1718907c07d4SVasu Dev if (fh->fh_r_ctl != FC_RCTL_ELS_REP || did == 0 || 1719907c07d4SVasu Dev fc_frame_payload_op(fp) != ELS_LS_ACC) { 1720907c07d4SVasu Dev FC_LPORT_DBG(lport, "FLOGI not accepted or bad response\n"); 1721907c07d4SVasu Dev fc_lport_error(lport, fp); 17225d8fc4a9SMing Lu goto out; 1723907c07d4SVasu Dev } 1724907c07d4SVasu Dev 172542e9a92fSRobert Love flp = fc_frame_payload_get(fp, sizeof(*flp)); 1726907c07d4SVasu Dev if (!flp) { 1727907c07d4SVasu Dev FC_LPORT_DBG(lport, "FLOGI bad response\n"); 1728907c07d4SVasu Dev fc_lport_error(lport, fp); 17295d8fc4a9SMing Lu goto out; 1730907c07d4SVasu Dev } 1731907c07d4SVasu Dev 173242e9a92fSRobert Love mfs = ntohs(flp->fl_csp.sp_bb_data) & 173342e9a92fSRobert Love FC_SP_BB_DATA_MASK; 173493f90e51SVasu Dev 173593f90e51SVasu Dev if (mfs < FC_SP_MIN_MAX_PAYLOAD || mfs > FC_SP_MAX_MAX_PAYLOAD) { 173673d67aa4SVasu Dev FC_LPORT_DBG(lport, "FLOGI bad mfs:%hu response, " 173790d66978SBart Van Assche "lport->mfs:%u\n", mfs, lport->mfs); 173873d67aa4SVasu Dev fc_lport_error(lport, fp); 17395d8fc4a9SMing Lu goto out; 174073d67aa4SVasu Dev } 174173d67aa4SVasu Dev 174293f90e51SVasu Dev if (mfs <= lport->mfs) { 174393f90e51SVasu Dev lport->mfs = mfs; 174493f90e51SVasu Dev fc_host_maxframe_size(lport->host) = mfs; 174593f90e51SVasu Dev } 174693f90e51SVasu Dev 174742e9a92fSRobert Love csp_flags = ntohs(flp->fl_csp.sp_features); 174842e9a92fSRobert Love r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov); 174942e9a92fSRobert Love e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov); 175042e9a92fSRobert Love if (csp_flags & FC_SP_FT_EDTR) 175142e9a92fSRobert Love e_d_tov /= 1000000; 1752db36c06cSChris Leech 1753db36c06cSChris Leech lport->npiv_enabled = !!(csp_flags & FC_SP_FT_NPIV_ACC); 1754db36c06cSChris Leech 175542e9a92fSRobert Love if ((csp_flags & FC_SP_FT_FPORT) == 0) { 175642e9a92fSRobert Love if (e_d_tov > lport->e_d_tov) 175742e9a92fSRobert Love lport->e_d_tov = e_d_tov; 175876e72ad1SHannes Reinecke lport->r_a_tov = 2 * lport->e_d_tov; 1759093bb6a2SJoe Eykholt fc_lport_set_port_id(lport, did, fp); 1760e6d8a1b0SJoe Eykholt printk(KERN_INFO "host%d: libfc: " 1761ce8b5df0SChris Leech "Port (%6.6x) entered " 1762e6d8a1b0SJoe Eykholt "point-to-point mode\n", 1763e6d8a1b0SJoe Eykholt lport->host->host_no, did); 1764251748a9SJoe Eykholt fc_lport_ptp_setup(lport, fc_frame_sid(fp), 176542e9a92fSRobert Love get_unaligned_be64( 176642e9a92fSRobert Love &flp->fl_wwpn), 176742e9a92fSRobert Love get_unaligned_be64( 176842e9a92fSRobert Love &flp->fl_wwnn)); 176942e9a92fSRobert Love } else { 177076e72ad1SHannes Reinecke if (e_d_tov > lport->e_d_tov) 177142e9a92fSRobert Love lport->e_d_tov = e_d_tov; 177276e72ad1SHannes Reinecke if (r_a_tov > lport->r_a_tov) 177342e9a92fSRobert Love lport->r_a_tov = r_a_tov; 177442e9a92fSRobert Love fc_host_fabric_name(lport->host) = 177542e9a92fSRobert Love get_unaligned_be64(&flp->fl_wwnn); 1776093bb6a2SJoe Eykholt fc_lport_set_port_id(lport, did, fp); 177742e9a92fSRobert Love fc_lport_enter_dns(lport); 177842e9a92fSRobert Love } 177942e9a92fSRobert Love 178042e9a92fSRobert Love out: 178142e9a92fSRobert Love fc_frame_free(fp); 178242e9a92fSRobert Love err: 178342e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 178442e9a92fSRobert Love } 178511b56188SChris Leech EXPORT_SYMBOL(fc_lport_flogi_resp); 178642e9a92fSRobert Love 178742e9a92fSRobert Love /** 17884a4db603SLee Jones * fc_lport_enter_flogi() - Send a FLOGI request to the fabric manager 178942e9a92fSRobert Love * @lport: Fibre Channel local port to be logged in to the fabric 179042e9a92fSRobert Love */ 1791c6b21c93SBart Van Assche static void fc_lport_enter_flogi(struct fc_lport *lport) 179242e9a92fSRobert Love { 179342e9a92fSRobert Love struct fc_frame *fp; 179442e9a92fSRobert Love 1795ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 1796ee35624eSHannes Reinecke 17977414705eSRobert Love FC_LPORT_DBG(lport, "Entered FLOGI state from %s state\n", 17987414705eSRobert Love fc_lport_state(lport)); 179942e9a92fSRobert Love 180042e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_FLOGI); 180142e9a92fSRobert Love 18023726f358SJoe Eykholt if (lport->point_to_multipoint) { 18033726f358SJoe Eykholt if (lport->port_id) 18043726f358SJoe Eykholt fc_lport_enter_ready(lport); 18053726f358SJoe Eykholt return; 18063726f358SJoe Eykholt } 18073726f358SJoe Eykholt 180842e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 180942e9a92fSRobert Love if (!fp) 181042e9a92fSRobert Love return fc_lport_error(lport, fp); 181142e9a92fSRobert Love 1812db36c06cSChris Leech if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, 1813db36c06cSChris Leech lport->vport ? ELS_FDISC : ELS_FLOGI, 1814b94f8951SJoe Eykholt fc_lport_flogi_resp, lport, 1815b94f8951SJoe Eykholt lport->vport ? 2 * lport->r_a_tov : 1816b94f8951SJoe Eykholt lport->e_d_tov)) 18178f550f93SChris Leech fc_lport_error(lport, NULL); 181842e9a92fSRobert Love } 181942e9a92fSRobert Love 18203a3b42bfSRobert Love /** 18213a3b42bfSRobert Love * fc_lport_config() - Configure a fc_lport 18223a3b42bfSRobert Love * @lport: The local port to be configured 18233a3b42bfSRobert Love */ 182442e9a92fSRobert Love int fc_lport_config(struct fc_lport *lport) 182542e9a92fSRobert Love { 182642e9a92fSRobert Love INIT_DELAYED_WORK(&lport->retry_work, fc_lport_timeout); 182742e9a92fSRobert Love mutex_init(&lport->lp_mutex); 182842e9a92fSRobert Love 1829b1d9fd55SJoe Eykholt fc_lport_state_enter(lport, LPORT_ST_DISABLED); 183042e9a92fSRobert Love 183142e9a92fSRobert Love fc_lport_add_fc4_type(lport, FC_TYPE_FCP); 183242e9a92fSRobert Love fc_lport_add_fc4_type(lport, FC_TYPE_CT); 1833acc1a921SKiran Patil fc_fc4_conf_lport_params(lport, FC_TYPE_FCP); 183442e9a92fSRobert Love 183542e9a92fSRobert Love return 0; 183642e9a92fSRobert Love } 183742e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_config); 183842e9a92fSRobert Love 18393a3b42bfSRobert Love /** 18403a3b42bfSRobert Love * fc_lport_init() - Initialize the lport layer for a local port 18413a3b42bfSRobert Love * @lport: The local port to initialize the exchange layer for 18423a3b42bfSRobert Love */ 184342e9a92fSRobert Love int fc_lport_init(struct fc_lport *lport) 184442e9a92fSRobert Love { 184542e9a92fSRobert Love fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 184642e9a92fSRobert Love fc_host_node_name(lport->host) = lport->wwnn; 184742e9a92fSRobert Love fc_host_port_name(lport->host) = lport->wwpn; 184842e9a92fSRobert Love fc_host_supported_classes(lport->host) = FC_COS_CLASS3; 184942e9a92fSRobert Love memset(fc_host_supported_fc4s(lport->host), 0, 185042e9a92fSRobert Love sizeof(fc_host_supported_fc4s(lport->host))); 185142e9a92fSRobert Love fc_host_supported_fc4s(lport->host)[2] = 1; 185242e9a92fSRobert Love fc_host_supported_fc4s(lport->host)[7] = 1; 185342e9a92fSRobert Love 185442e9a92fSRobert Love /* This value is also unchanging */ 185542e9a92fSRobert Love memset(fc_host_active_fc4s(lport->host), 0, 185642e9a92fSRobert Love sizeof(fc_host_active_fc4s(lport->host))); 185742e9a92fSRobert Love fc_host_active_fc4s(lport->host)[2] = 1; 185842e9a92fSRobert Love fc_host_active_fc4s(lport->host)[7] = 1; 185942e9a92fSRobert Love fc_host_maxframe_size(lport->host) = lport->mfs; 186042e9a92fSRobert Love fc_host_supported_speeds(lport->host) = 0; 186142e9a92fSRobert Love if (lport->link_supported_speeds & FC_PORTSPEED_1GBIT) 186242e9a92fSRobert Love fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_1GBIT; 186342e9a92fSRobert Love if (lport->link_supported_speeds & FC_PORTSPEED_10GBIT) 186442e9a92fSRobert Love fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_10GBIT; 1865*0726af6bSJaved Hasan if (lport->link_supported_speeds & FC_PORTSPEED_40GBIT) 1866*0726af6bSJaved Hasan fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_40GBIT; 1867*0726af6bSJaved Hasan if (lport->link_supported_speeds & FC_PORTSPEED_100GBIT) 1868*0726af6bSJaved Hasan fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_100GBIT; 1869*0726af6bSJaved Hasan if (lport->link_supported_speeds & FC_PORTSPEED_25GBIT) 1870*0726af6bSJaved Hasan fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_25GBIT; 1871*0726af6bSJaved Hasan if (lport->link_supported_speeds & FC_PORTSPEED_50GBIT) 1872*0726af6bSJaved Hasan fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_50GBIT; 1873*0726af6bSJaved Hasan if (lport->link_supported_speeds & FC_PORTSPEED_100GBIT) 1874*0726af6bSJaved Hasan fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_100GBIT; 1875*0726af6bSJaved Hasan 187670d53b04SJoe Eykholt fc_fc4_add_lport(lport); 187742e9a92fSRobert Love 1878*0726af6bSJaved Hasan fc_host_num_discovered_ports(lport->host) = DISCOVERED_PORTS; 1879*0726af6bSJaved Hasan fc_host_port_state(lport->host) = FC_PORTSTATE_ONLINE; 1880*0726af6bSJaved Hasan fc_host_max_ct_payload(lport->host) = MAX_CT_PAYLOAD; 1881*0726af6bSJaved Hasan fc_host_num_ports(lport->host) = NUMBER_OF_PORTS; 1882*0726af6bSJaved Hasan fc_host_bootbios_state(lport->host) = 0X00000000; 1883*0726af6bSJaved Hasan snprintf(fc_host_bootbios_version(lport->host), 1884*0726af6bSJaved Hasan FC_SYMBOLIC_NAME_SIZE, "%s", "Unknown"); 1885*0726af6bSJaved Hasan 188642e9a92fSRobert Love return 0; 188742e9a92fSRobert Love } 188842e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_init); 1889a51ab396SSteve Ma 1890a51ab396SSteve Ma /** 18913a3b42bfSRobert Love * fc_lport_bsg_resp() - The common response handler for FC Passthrough requests 18923a3b42bfSRobert Love * @sp: The sequence for the FC Passthrough response 18933a3b42bfSRobert Love * @fp: The response frame 18943a3b42bfSRobert Love * @info_arg: The BSG info that the response is for 1895a51ab396SSteve Ma */ 1896a51ab396SSteve Ma static void fc_lport_bsg_resp(struct fc_seq *sp, struct fc_frame *fp, 1897a51ab396SSteve Ma void *info_arg) 1898a51ab396SSteve Ma { 1899a51ab396SSteve Ma struct fc_bsg_info *info = info_arg; 190075cc8cfcSJohannes Thumshirn struct bsg_job *job = info->job; 190101e0e15cSJohannes Thumshirn struct fc_bsg_reply *bsg_reply = job->reply; 1902a51ab396SSteve Ma struct fc_lport *lport = info->lport; 1903a51ab396SSteve Ma struct fc_frame_header *fh; 1904a51ab396SSteve Ma size_t len; 1905a51ab396SSteve Ma void *buf; 1906a51ab396SSteve Ma 1907a51ab396SSteve Ma if (IS_ERR(fp)) { 190801e0e15cSJohannes Thumshirn bsg_reply->result = (PTR_ERR(fp) == -FC_EX_CLOSED) ? 1909a51ab396SSteve Ma -ECONNABORTED : -ETIMEDOUT; 1910a51ab396SSteve Ma job->reply_len = sizeof(uint32_t); 191106548160SJohannes Thumshirn bsg_job_done(job, bsg_reply->result, 19121abaede7SJohannes Thumshirn bsg_reply->reply_payload_rcv_len); 1913a51ab396SSteve Ma kfree(info); 1914a51ab396SSteve Ma return; 1915a51ab396SSteve Ma } 1916a51ab396SSteve Ma 1917a51ab396SSteve Ma mutex_lock(&lport->lp_mutex); 1918a51ab396SSteve Ma fh = fc_frame_header_get(fp); 1919a51ab396SSteve Ma len = fr_len(fp) - sizeof(*fh); 1920a51ab396SSteve Ma buf = fc_frame_payload_get(fp, 0); 1921a51ab396SSteve Ma 1922a51ab396SSteve Ma if (fr_sof(fp) == FC_SOF_I3 && !ntohs(fh->fh_seq_cnt)) { 1923a51ab396SSteve Ma /* Get the response code from the first frame payload */ 1924a51ab396SSteve Ma unsigned short cmd = (info->rsp_code == FC_FS_ACC) ? 1925a51ab396SSteve Ma ntohs(((struct fc_ct_hdr *)buf)->ct_cmd) : 1926a51ab396SSteve Ma (unsigned short)fc_frame_payload_op(fp); 1927a51ab396SSteve Ma 1928a51ab396SSteve Ma /* Save the reply status of the job */ 192901e0e15cSJohannes Thumshirn bsg_reply->reply_data.ctels_reply.status = 1930a51ab396SSteve Ma (cmd == info->rsp_code) ? 1931a51ab396SSteve Ma FC_CTELS_STATUS_OK : FC_CTELS_STATUS_REJECT; 1932a51ab396SSteve Ma } 1933a51ab396SSteve Ma 193401e0e15cSJohannes Thumshirn bsg_reply->reply_payload_rcv_len += 1935a51ab396SSteve Ma fc_copy_buffer_to_sglist(buf, len, info->sg, &info->nents, 193677dfce07SCong Wang &info->offset, NULL); 1937a51ab396SSteve Ma 1938a51ab396SSteve Ma if (fr_eof(fp) == FC_EOF_T && 1939a51ab396SSteve Ma (ntoh24(fh->fh_f_ctl) & (FC_FC_LAST_SEQ | FC_FC_END_SEQ)) == 1940a51ab396SSteve Ma (FC_FC_LAST_SEQ | FC_FC_END_SEQ)) { 194101e0e15cSJohannes Thumshirn if (bsg_reply->reply_payload_rcv_len > 1942a51ab396SSteve Ma job->reply_payload.payload_len) 194301e0e15cSJohannes Thumshirn bsg_reply->reply_payload_rcv_len = 1944a51ab396SSteve Ma job->reply_payload.payload_len; 194501e0e15cSJohannes Thumshirn bsg_reply->result = 0; 194606548160SJohannes Thumshirn bsg_job_done(job, bsg_reply->result, 19471abaede7SJohannes Thumshirn bsg_reply->reply_payload_rcv_len); 1948a51ab396SSteve Ma kfree(info); 1949a51ab396SSteve Ma } 1950a51ab396SSteve Ma fc_frame_free(fp); 1951a51ab396SSteve Ma mutex_unlock(&lport->lp_mutex); 1952a51ab396SSteve Ma } 1953a51ab396SSteve Ma 1954a51ab396SSteve Ma /** 19553a3b42bfSRobert Love * fc_lport_els_request() - Send ELS passthrough request 19563a3b42bfSRobert Love * @job: The BSG Passthrough job 1957a51ab396SSteve Ma * @lport: The local port sending the request 19583a3b42bfSRobert Love * @did: The destination port id 19599865a04dSLee Jones * @tov: The timeout period (in ms) 1960a51ab396SSteve Ma */ 196175cc8cfcSJohannes Thumshirn static int fc_lport_els_request(struct bsg_job *job, 1962a51ab396SSteve Ma struct fc_lport *lport, 1963a51ab396SSteve Ma u32 did, u32 tov) 1964a51ab396SSteve Ma { 1965a51ab396SSteve Ma struct fc_bsg_info *info; 1966a51ab396SSteve Ma struct fc_frame *fp; 1967a51ab396SSteve Ma struct fc_frame_header *fh; 1968a51ab396SSteve Ma char *pp; 1969a51ab396SSteve Ma int len; 1970a51ab396SSteve Ma 1971ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 1972ee35624eSHannes Reinecke 197370d919fbSYi Zou fp = fc_frame_alloc(lport, job->request_payload.payload_len); 1974a51ab396SSteve Ma if (!fp) 1975a51ab396SSteve Ma return -ENOMEM; 1976a51ab396SSteve Ma 1977a51ab396SSteve Ma len = job->request_payload.payload_len; 1978a51ab396SSteve Ma pp = fc_frame_payload_get(fp, len); 1979a51ab396SSteve Ma 1980a51ab396SSteve Ma sg_copy_to_buffer(job->request_payload.sg_list, 1981a51ab396SSteve Ma job->request_payload.sg_cnt, 1982a51ab396SSteve Ma pp, len); 1983a51ab396SSteve Ma 1984a51ab396SSteve Ma fh = fc_frame_header_get(fp); 1985a51ab396SSteve Ma fh->fh_r_ctl = FC_RCTL_ELS_REQ; 1986a51ab396SSteve Ma hton24(fh->fh_d_id, did); 19877b2787ecSRobert Love hton24(fh->fh_s_id, lport->port_id); 1988a51ab396SSteve Ma fh->fh_type = FC_TYPE_ELS; 198924f089e2SJoe Eykholt hton24(fh->fh_f_ctl, FC_FCTL_REQ); 1990a51ab396SSteve Ma fh->fh_cs_ctl = 0; 1991a51ab396SSteve Ma fh->fh_df_ctl = 0; 1992a51ab396SSteve Ma fh->fh_parm_offset = 0; 1993a51ab396SSteve Ma 1994a51ab396SSteve Ma info = kzalloc(sizeof(struct fc_bsg_info), GFP_KERNEL); 1995a51ab396SSteve Ma if (!info) { 1996a51ab396SSteve Ma fc_frame_free(fp); 1997a51ab396SSteve Ma return -ENOMEM; 1998a51ab396SSteve Ma } 1999a51ab396SSteve Ma 2000a51ab396SSteve Ma info->job = job; 2001a51ab396SSteve Ma info->lport = lport; 2002a51ab396SSteve Ma info->rsp_code = ELS_LS_ACC; 2003a51ab396SSteve Ma info->nents = job->reply_payload.sg_cnt; 2004a51ab396SSteve Ma info->sg = job->reply_payload.sg_list; 2005a51ab396SSteve Ma 20063afd2d15SHannes Reinecke if (!fc_exch_seq_send(lport, fp, fc_lport_bsg_resp, 200772e0daadSHillf Danton NULL, info, tov)) { 200872e0daadSHillf Danton kfree(info); 2009a51ab396SSteve Ma return -ECOMM; 201072e0daadSHillf Danton } 2011a51ab396SSteve Ma return 0; 2012a51ab396SSteve Ma } 2013a51ab396SSteve Ma 2014a51ab396SSteve Ma /** 20153a3b42bfSRobert Love * fc_lport_ct_request() - Send CT Passthrough request 20163a3b42bfSRobert Love * @job: The BSG Passthrough job 2017a51ab396SSteve Ma * @lport: The local port sending the request 2018a51ab396SSteve Ma * @did: The destination FC-ID 20193a3b42bfSRobert Love * @tov: The timeout period to wait for the response 2020a51ab396SSteve Ma */ 202175cc8cfcSJohannes Thumshirn static int fc_lport_ct_request(struct bsg_job *job, 2022a51ab396SSteve Ma struct fc_lport *lport, u32 did, u32 tov) 2023a51ab396SSteve Ma { 2024a51ab396SSteve Ma struct fc_bsg_info *info; 2025a51ab396SSteve Ma struct fc_frame *fp; 2026a51ab396SSteve Ma struct fc_frame_header *fh; 2027a51ab396SSteve Ma struct fc_ct_req *ct; 2028a51ab396SSteve Ma size_t len; 2029a51ab396SSteve Ma 2030ee35624eSHannes Reinecke lockdep_assert_held(&lport->lp_mutex); 2031ee35624eSHannes Reinecke 2032a51ab396SSteve Ma fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + 2033a51ab396SSteve Ma job->request_payload.payload_len); 2034a51ab396SSteve Ma if (!fp) 2035a51ab396SSteve Ma return -ENOMEM; 2036a51ab396SSteve Ma 2037a51ab396SSteve Ma len = job->request_payload.payload_len; 2038a51ab396SSteve Ma ct = fc_frame_payload_get(fp, len); 2039a51ab396SSteve Ma 2040a51ab396SSteve Ma sg_copy_to_buffer(job->request_payload.sg_list, 2041a51ab396SSteve Ma job->request_payload.sg_cnt, 2042a51ab396SSteve Ma ct, len); 2043a51ab396SSteve Ma 2044a51ab396SSteve Ma fh = fc_frame_header_get(fp); 2045a51ab396SSteve Ma fh->fh_r_ctl = FC_RCTL_DD_UNSOL_CTL; 2046a51ab396SSteve Ma hton24(fh->fh_d_id, did); 20477b2787ecSRobert Love hton24(fh->fh_s_id, lport->port_id); 2048a51ab396SSteve Ma fh->fh_type = FC_TYPE_CT; 204924f089e2SJoe Eykholt hton24(fh->fh_f_ctl, FC_FCTL_REQ); 2050a51ab396SSteve Ma fh->fh_cs_ctl = 0; 2051a51ab396SSteve Ma fh->fh_df_ctl = 0; 2052a51ab396SSteve Ma fh->fh_parm_offset = 0; 2053a51ab396SSteve Ma 2054a51ab396SSteve Ma info = kzalloc(sizeof(struct fc_bsg_info), GFP_KERNEL); 2055a51ab396SSteve Ma if (!info) { 2056a51ab396SSteve Ma fc_frame_free(fp); 2057a51ab396SSteve Ma return -ENOMEM; 2058a51ab396SSteve Ma } 2059a51ab396SSteve Ma 2060a51ab396SSteve Ma info->job = job; 2061a51ab396SSteve Ma info->lport = lport; 2062a51ab396SSteve Ma info->rsp_code = FC_FS_ACC; 2063a51ab396SSteve Ma info->nents = job->reply_payload.sg_cnt; 2064a51ab396SSteve Ma info->sg = job->reply_payload.sg_list; 2065a51ab396SSteve Ma 20663afd2d15SHannes Reinecke if (!fc_exch_seq_send(lport, fp, fc_lport_bsg_resp, 20672d6dfb00SHillf Danton NULL, info, tov)) { 20682d6dfb00SHillf Danton kfree(info); 2069a51ab396SSteve Ma return -ECOMM; 20702d6dfb00SHillf Danton } 2071a51ab396SSteve Ma return 0; 2072a51ab396SSteve Ma } 2073a51ab396SSteve Ma 2074a51ab396SSteve Ma /** 2075a51ab396SSteve Ma * fc_lport_bsg_request() - The common entry point for sending 20763a3b42bfSRobert Love * FC Passthrough requests 20773a3b42bfSRobert Love * @job: The BSG passthrough job 2078a51ab396SSteve Ma */ 207975cc8cfcSJohannes Thumshirn int fc_lport_bsg_request(struct bsg_job *job) 2080a51ab396SSteve Ma { 208101e0e15cSJohannes Thumshirn struct fc_bsg_request *bsg_request = job->request; 208201e0e15cSJohannes Thumshirn struct fc_bsg_reply *bsg_reply = job->reply; 2083cd21c605SJohannes Thumshirn struct Scsi_Host *shost = fc_bsg_to_shost(job); 2084a51ab396SSteve Ma struct fc_lport *lport = shost_priv(shost); 2085a51ab396SSteve Ma struct fc_rport *rport; 2086a51ab396SSteve Ma struct fc_rport_priv *rdata; 2087a51ab396SSteve Ma int rc = -EINVAL; 2088baa6719fSHannes Reinecke u32 did, tov; 2089a51ab396SSteve Ma 209001e0e15cSJohannes Thumshirn bsg_reply->reply_payload_rcv_len = 0; 2091a51ab396SSteve Ma 2092a51ab396SSteve Ma mutex_lock(&lport->lp_mutex); 2093a51ab396SSteve Ma 209401e0e15cSJohannes Thumshirn switch (bsg_request->msgcode) { 2095a51ab396SSteve Ma case FC_BSG_RPT_ELS: 20961d69b122SJohannes Thumshirn rport = fc_bsg_to_rport(job); 2097a51ab396SSteve Ma if (!rport) 2098a51ab396SSteve Ma break; 2099a51ab396SSteve Ma 2100a51ab396SSteve Ma rdata = rport->dd_data; 2101a51ab396SSteve Ma rc = fc_lport_els_request(job, lport, rport->port_id, 2102a51ab396SSteve Ma rdata->e_d_tov); 2103a51ab396SSteve Ma break; 2104a51ab396SSteve Ma 2105a51ab396SSteve Ma case FC_BSG_RPT_CT: 21061d69b122SJohannes Thumshirn rport = fc_bsg_to_rport(job); 2107a51ab396SSteve Ma if (!rport) 2108a51ab396SSteve Ma break; 2109a51ab396SSteve Ma 2110a51ab396SSteve Ma rdata = rport->dd_data; 2111a51ab396SSteve Ma rc = fc_lport_ct_request(job, lport, rport->port_id, 2112a51ab396SSteve Ma rdata->e_d_tov); 2113a51ab396SSteve Ma break; 2114a51ab396SSteve Ma 2115a51ab396SSteve Ma case FC_BSG_HST_CT: 211601e0e15cSJohannes Thumshirn did = ntoh24(bsg_request->rqst_data.h_ct.port_id); 2117baa6719fSHannes Reinecke if (did == FC_FID_DIR_SERV) { 21183a3b42bfSRobert Love rdata = lport->dns_rdata; 2119a51ab396SSteve Ma if (!rdata) 2120a51ab396SSteve Ma break; 2121baa6719fSHannes Reinecke tov = rdata->e_d_tov; 2122baa6719fSHannes Reinecke } else { 2123e87b7777SHannes Reinecke rdata = fc_rport_lookup(lport, did); 2124baa6719fSHannes Reinecke if (!rdata) 2125baa6719fSHannes Reinecke break; 2126baa6719fSHannes Reinecke tov = rdata->e_d_tov; 2127944ef968SHannes Reinecke kref_put(&rdata->kref, fc_rport_destroy); 2128baa6719fSHannes Reinecke } 2129a51ab396SSteve Ma 2130baa6719fSHannes Reinecke rc = fc_lport_ct_request(job, lport, did, tov); 2131a51ab396SSteve Ma break; 2132a51ab396SSteve Ma 2133a51ab396SSteve Ma case FC_BSG_HST_ELS_NOLOGIN: 213401e0e15cSJohannes Thumshirn did = ntoh24(bsg_request->rqst_data.h_els.port_id); 2135a51ab396SSteve Ma rc = fc_lport_els_request(job, lport, did, lport->e_d_tov); 2136a51ab396SSteve Ma break; 2137a51ab396SSteve Ma } 2138a51ab396SSteve Ma 2139a51ab396SSteve Ma mutex_unlock(&lport->lp_mutex); 2140a51ab396SSteve Ma return rc; 2141a51ab396SSteve Ma } 2142a51ab396SSteve Ma EXPORT_SYMBOL(fc_lport_bsg_request); 2143