142e9a92fSRobert Love /* 242e9a92fSRobert Love * Copyright(c) 2007 Intel Corporation. All rights reserved. 342e9a92fSRobert Love * 442e9a92fSRobert Love * This program is free software; you can redistribute it and/or modify it 542e9a92fSRobert Love * under the terms and conditions of the GNU General Public License, 642e9a92fSRobert Love * version 2, as published by the Free Software Foundation. 742e9a92fSRobert Love * 842e9a92fSRobert Love * This program is distributed in the hope it will be useful, but WITHOUT 942e9a92fSRobert Love * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1042e9a92fSRobert Love * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 1142e9a92fSRobert Love * more details. 1242e9a92fSRobert Love * 1342e9a92fSRobert Love * You should have received a copy of the GNU General Public License along with 1442e9a92fSRobert Love * this program; if not, write to the Free Software Foundation, Inc., 1542e9a92fSRobert Love * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 1642e9a92fSRobert Love * 1742e9a92fSRobert Love * Maintained at www.Open-FCoE.org 1842e9a92fSRobert Love */ 1942e9a92fSRobert Love 2042e9a92fSRobert Love /* 2142e9a92fSRobert Love * PORT LOCKING NOTES 2242e9a92fSRobert Love * 2342e9a92fSRobert Love * These comments only apply to the 'port code' which consists of the lport, 2442e9a92fSRobert Love * disc and rport blocks. 2542e9a92fSRobert Love * 2642e9a92fSRobert Love * MOTIVATION 2742e9a92fSRobert Love * 2842e9a92fSRobert Love * The lport, disc and rport blocks all have mutexes that are used to protect 2942e9a92fSRobert Love * those objects. The main motivation for these locks is to prevent from 3042e9a92fSRobert Love * having an lport reset just before we send a frame. In that scenario the 3142e9a92fSRobert Love * lport's FID would get set to zero and then we'd send a frame with an 3242e9a92fSRobert Love * invalid SID. We also need to ensure that states don't change unexpectedly 3342e9a92fSRobert Love * while processing another state. 3442e9a92fSRobert Love * 35732bee7aSUwe Kleine-König * HIERARCHY 3642e9a92fSRobert Love * 37732bee7aSUwe Kleine-König * The following hierarchy defines the locking rules. A greater lock 3842e9a92fSRobert Love * may be held before acquiring a lesser lock, but a lesser lock should never 39732bee7aSUwe Kleine-König * be held while attempting to acquire a greater lock. Here is the hierarchy- 4042e9a92fSRobert Love * 4142e9a92fSRobert Love * lport > disc, lport > rport, disc > rport 4242e9a92fSRobert Love * 4342e9a92fSRobert Love * CALLBACKS 4442e9a92fSRobert Love * 4542e9a92fSRobert Love * The callbacks cause complications with this scheme. There is a callback 4642e9a92fSRobert Love * from the rport (to either lport or disc) and a callback from disc 4742e9a92fSRobert Love * (to the lport). 4842e9a92fSRobert Love * 4942e9a92fSRobert Love * As rports exit the rport state machine a callback is made to the owner of 5042e9a92fSRobert Love * the rport to notify success or failure. Since the callback is likely to 5142e9a92fSRobert Love * cause the lport or disc to grab its lock we cannot hold the rport lock 5242e9a92fSRobert Love * while making the callback. To ensure that the rport is not free'd while 5342e9a92fSRobert Love * processing the callback the rport callbacks are serialized through a 5442e9a92fSRobert Love * single-threaded workqueue. An rport would never be free'd while in a 5525985edcSLucas De Marchi * callback handler because no other rport work in this queue can be executed 5642e9a92fSRobert Love * at the same time. 5742e9a92fSRobert Love * 5842e9a92fSRobert Love * When discovery succeeds or fails a callback is made to the lport as 59af901ca1SAndré Goddard Rosa * notification. Currently, successful discovery causes the lport to take no 6042e9a92fSRobert Love * action. A failure will cause the lport to reset. There is likely a circular 6142e9a92fSRobert Love * locking problem with this implementation. 6242e9a92fSRobert Love */ 6342e9a92fSRobert Love 6442e9a92fSRobert Love /* 6542e9a92fSRobert Love * LPORT LOCKING 6642e9a92fSRobert Love * 6742e9a92fSRobert Love * The critical sections protected by the lport's mutex are quite broad and 6842e9a92fSRobert Love * may be improved upon in the future. The lport code and its locking doesn't 6942e9a92fSRobert Love * influence the I/O path, so excessive locking doesn't penalize I/O 7042e9a92fSRobert Love * performance. 7142e9a92fSRobert Love * 7242e9a92fSRobert Love * The strategy is to lock whenever processing a request or response. Note 7342e9a92fSRobert Love * that every _enter_* function corresponds to a state change. They generally 7442e9a92fSRobert Love * change the lports state and then send a request out on the wire. We lock 7542e9a92fSRobert Love * before calling any of these functions to protect that state change. This 7642e9a92fSRobert Love * means that the entry points into the lport block manage the locks while 7742e9a92fSRobert Love * the state machine can transition between states (i.e. _enter_* functions) 7842e9a92fSRobert Love * while always staying protected. 7942e9a92fSRobert Love * 8042e9a92fSRobert Love * When handling responses we also hold the lport mutex broadly. When the 8142e9a92fSRobert Love * lport receives the response frame it locks the mutex and then calls the 8242e9a92fSRobert Love * appropriate handler for the particuar response. Generally a response will 8342e9a92fSRobert Love * trigger a state change and so the lock must already be held. 8442e9a92fSRobert Love * 8542e9a92fSRobert Love * Retries also have to consider the locking. The retries occur from a work 8642e9a92fSRobert Love * context and the work function will lock the lport and then retry the state 8742e9a92fSRobert Love * (i.e. _enter_* function). 8842e9a92fSRobert Love */ 8942e9a92fSRobert Love 9042e9a92fSRobert Love #include <linux/timer.h> 9177a2b73aSVasu Dev #include <linux/delay.h> 92acf3368fSPaul Gortmaker #include <linux/module.h> 935a0e3ad6STejun Heo #include <linux/slab.h> 9442e9a92fSRobert Love #include <asm/unaligned.h> 9542e9a92fSRobert Love 9642e9a92fSRobert Love #include <scsi/fc/fc_gs.h> 9742e9a92fSRobert Love 9842e9a92fSRobert Love #include <scsi/libfc.h> 9942e9a92fSRobert Love #include <scsi/fc_encode.h> 100a51ab396SSteve Ma #include <linux/scatterlist.h> 10142e9a92fSRobert Love 1028866a5d9SRobert Love #include "fc_libfc.h" 1038866a5d9SRobert Love 10442e9a92fSRobert Love /* Fabric IDs to use for point-to-point mode, chosen on whims. */ 10542e9a92fSRobert Love #define FC_LOCAL_PTP_FID_LO 0x010101 10642e9a92fSRobert Love #define FC_LOCAL_PTP_FID_HI 0x010102 10742e9a92fSRobert Love 10842e9a92fSRobert Love #define DNS_DELAY 3 /* Discovery delay after RSCN (in seconds)*/ 10942e9a92fSRobert Love 11042e9a92fSRobert Love static void fc_lport_error(struct fc_lport *, struct fc_frame *); 11142e9a92fSRobert Love 11242e9a92fSRobert Love static void fc_lport_enter_reset(struct fc_lport *); 11342e9a92fSRobert Love static void fc_lport_enter_flogi(struct fc_lport *); 11442e9a92fSRobert Love static void fc_lport_enter_dns(struct fc_lport *); 115c914f7d1SChris Leech static void fc_lport_enter_ns(struct fc_lport *, enum fc_lport_state); 11642e9a92fSRobert Love static void fc_lport_enter_scr(struct fc_lport *); 11742e9a92fSRobert Love static void fc_lport_enter_ready(struct fc_lport *); 11842e9a92fSRobert Love static void fc_lport_enter_logo(struct fc_lport *); 119d78c317fSNeerav Parikh static void fc_lport_enter_fdmi(struct fc_lport *lport); 120d78c317fSNeerav Parikh static void fc_lport_enter_ms(struct fc_lport *, enum fc_lport_state); 12142e9a92fSRobert Love 12242e9a92fSRobert Love static const char *fc_lport_state_names[] = { 123b1d9fd55SJoe Eykholt [LPORT_ST_DISABLED] = "disabled", 12442e9a92fSRobert Love [LPORT_ST_FLOGI] = "FLOGI", 12542e9a92fSRobert Love [LPORT_ST_DNS] = "dNS", 126c9c7bd7aSChris Leech [LPORT_ST_RNN_ID] = "RNN_ID", 1275baa17c3SChris Leech [LPORT_ST_RSNN_NN] = "RSNN_NN", 128c9866a54SChris Leech [LPORT_ST_RSPN_ID] = "RSPN_ID", 12942e9a92fSRobert Love [LPORT_ST_RFT_ID] = "RFT_ID", 130ab593b18SJoe Eykholt [LPORT_ST_RFF_ID] = "RFF_ID", 131d78c317fSNeerav Parikh [LPORT_ST_FDMI] = "FDMI", 132d78c317fSNeerav Parikh [LPORT_ST_RHBA] = "RHBA", 133d78c317fSNeerav Parikh [LPORT_ST_RPA] = "RPA", 134d78c317fSNeerav Parikh [LPORT_ST_DHBA] = "DHBA", 135d78c317fSNeerav Parikh [LPORT_ST_DPRT] = "DPRT", 13642e9a92fSRobert Love [LPORT_ST_SCR] = "SCR", 13742e9a92fSRobert Love [LPORT_ST_READY] = "Ready", 13842e9a92fSRobert Love [LPORT_ST_LOGO] = "LOGO", 13942e9a92fSRobert Love [LPORT_ST_RESET] = "reset", 14042e9a92fSRobert Love }; 14142e9a92fSRobert Love 142a51ab396SSteve Ma /** 143a51ab396SSteve Ma * struct fc_bsg_info - FC Passthrough managemet structure 144a51ab396SSteve Ma * @job: The passthrough job 145a51ab396SSteve Ma * @lport: The local port to pass through a command 146a51ab396SSteve Ma * @rsp_code: The expected response code 147a51ab396SSteve Ma * @sg: job->reply_payload.sg_list 148a51ab396SSteve Ma * @nents: job->reply_payload.sg_cnt 149a51ab396SSteve Ma * @offset: The offset into the response data 150a51ab396SSteve Ma */ 151a51ab396SSteve Ma struct fc_bsg_info { 152a51ab396SSteve Ma struct fc_bsg_job *job; 153a51ab396SSteve Ma struct fc_lport *lport; 154a51ab396SSteve Ma u16 rsp_code; 155a51ab396SSteve Ma struct scatterlist *sg; 156a51ab396SSteve Ma u32 nents; 157a51ab396SSteve Ma size_t offset; 158a51ab396SSteve Ma }; 159a51ab396SSteve Ma 1603a3b42bfSRobert Love /** 1613a3b42bfSRobert Love * fc_frame_drop() - Dummy frame handler 1623a3b42bfSRobert Love * @lport: The local port the frame was received on 1633a3b42bfSRobert Love * @fp: The received frame 1643a3b42bfSRobert Love */ 16542e9a92fSRobert Love static int fc_frame_drop(struct fc_lport *lport, struct fc_frame *fp) 16642e9a92fSRobert Love { 16742e9a92fSRobert Love fc_frame_free(fp); 16842e9a92fSRobert Love return 0; 16942e9a92fSRobert Love } 17042e9a92fSRobert Love 17142e9a92fSRobert Love /** 17234f42a07SRobert Love * fc_lport_rport_callback() - Event handler for rport events 17342e9a92fSRobert Love * @lport: The lport which is receiving the event 1749fb9d328SJoe Eykholt * @rdata: private remote port data 17525985edcSLucas De Marchi * @event: The event that occurred 17642e9a92fSRobert Love * 17742e9a92fSRobert Love * Locking Note: The rport lock should not be held when calling 17842e9a92fSRobert Love * this function. 17942e9a92fSRobert Love */ 18042e9a92fSRobert Love static void fc_lport_rport_callback(struct fc_lport *lport, 1819fb9d328SJoe Eykholt struct fc_rport_priv *rdata, 18242e9a92fSRobert Love enum fc_rport_event event) 18342e9a92fSRobert Love { 184ce8b5df0SChris Leech FC_LPORT_DBG(lport, "Received a %d event for port (%6.6x)\n", event, 185f211fa51SJoe Eykholt rdata->ids.port_id); 18642e9a92fSRobert Love 187b5cbf083SJoe Eykholt mutex_lock(&lport->lp_mutex); 18842e9a92fSRobert Love switch (event) { 1894c0f62b5SJoe Eykholt case RPORT_EV_READY: 19042e9a92fSRobert Love if (lport->state == LPORT_ST_DNS) { 1913a3b42bfSRobert Love lport->dns_rdata = rdata; 192c914f7d1SChris Leech fc_lport_enter_ns(lport, LPORT_ST_RNN_ID); 193d78c317fSNeerav Parikh } else if (lport->state == LPORT_ST_FDMI) { 194d78c317fSNeerav Parikh lport->ms_rdata = rdata; 195d78c317fSNeerav Parikh fc_lport_enter_ms(lport, LPORT_ST_DHBA); 19642e9a92fSRobert Love } else { 1974c0f62b5SJoe Eykholt FC_LPORT_DBG(lport, "Received an READY event " 198ce8b5df0SChris Leech "on port (%6.6x) for the directory " 19942e9a92fSRobert Love "server, but the lport is not " 200d78c317fSNeerav Parikh "in the DNS or FDMI state, it's in the " 201f211fa51SJoe Eykholt "%d state", rdata->ids.port_id, 20242e9a92fSRobert Love lport->state); 2039fb9d328SJoe Eykholt lport->tt.rport_logoff(rdata); 20442e9a92fSRobert Love } 20542e9a92fSRobert Love break; 20642e9a92fSRobert Love case RPORT_EV_LOGO: 20742e9a92fSRobert Love case RPORT_EV_FAILED: 20842e9a92fSRobert Love case RPORT_EV_STOP: 209d78c317fSNeerav Parikh if (rdata->ids.port_id == FC_FID_DIR_SERV) 2103a3b42bfSRobert Love lport->dns_rdata = NULL; 211d78c317fSNeerav Parikh else if (rdata->ids.port_id == FC_FID_MGMT_SERV) 212d78c317fSNeerav Parikh lport->ms_rdata = NULL; 21342e9a92fSRobert Love break; 21442e9a92fSRobert Love case RPORT_EV_NONE: 21542e9a92fSRobert Love break; 21642e9a92fSRobert Love } 217b5cbf083SJoe Eykholt mutex_unlock(&lport->lp_mutex); 21842e9a92fSRobert Love } 21942e9a92fSRobert Love 22042e9a92fSRobert Love /** 22134f42a07SRobert Love * fc_lport_state() - Return a string which represents the lport's state 22242e9a92fSRobert Love * @lport: The lport whose state is to converted to a string 22342e9a92fSRobert Love */ 22442e9a92fSRobert Love static const char *fc_lport_state(struct fc_lport *lport) 22542e9a92fSRobert Love { 22642e9a92fSRobert Love const char *cp; 22742e9a92fSRobert Love 22842e9a92fSRobert Love cp = fc_lport_state_names[lport->state]; 22942e9a92fSRobert Love if (!cp) 23042e9a92fSRobert Love cp = "unknown"; 23142e9a92fSRobert Love return cp; 23242e9a92fSRobert Love } 23342e9a92fSRobert Love 23442e9a92fSRobert Love /** 23534f42a07SRobert Love * fc_lport_ptp_setup() - Create an rport for point-to-point mode 23642e9a92fSRobert Love * @lport: The lport to attach the ptp rport to 2373a3b42bfSRobert Love * @remote_fid: The FID of the ptp rport 23842e9a92fSRobert Love * @remote_wwpn: The WWPN of the ptp rport 23942e9a92fSRobert Love * @remote_wwnn: The WWNN of the ptp rport 24042e9a92fSRobert Love */ 24142e9a92fSRobert Love static void fc_lport_ptp_setup(struct fc_lport *lport, 24242e9a92fSRobert Love u32 remote_fid, u64 remote_wwpn, 24342e9a92fSRobert Love u64 remote_wwnn) 24442e9a92fSRobert Love { 24548f00902SJoe Eykholt mutex_lock(&lport->disc.disc_mutex); 2462f2ac4a0SJoe Eykholt if (lport->ptp_rdata) { 2473a3b42bfSRobert Love lport->tt.rport_logoff(lport->ptp_rdata); 2482f2ac4a0SJoe Eykholt kref_put(&lport->ptp_rdata->kref, lport->tt.rport_destroy); 2492f2ac4a0SJoe Eykholt } 2503a3b42bfSRobert Love lport->ptp_rdata = lport->tt.rport_create(lport, remote_fid); 2512f2ac4a0SJoe Eykholt kref_get(&lport->ptp_rdata->kref); 2523a3b42bfSRobert Love lport->ptp_rdata->ids.port_name = remote_wwpn; 2533a3b42bfSRobert Love lport->ptp_rdata->ids.node_name = remote_wwnn; 25448f00902SJoe Eykholt mutex_unlock(&lport->disc.disc_mutex); 25542e9a92fSRobert Love 2563a3b42bfSRobert Love lport->tt.rport_login(lport->ptp_rdata); 25742e9a92fSRobert Love 25842e9a92fSRobert Love fc_lport_enter_ready(lport); 25942e9a92fSRobert Love } 26042e9a92fSRobert Love 2613a3b42bfSRobert Love /** 2623a3b42bfSRobert Love * fc_get_host_port_state() - Return the port state of the given Scsi_Host 2633a3b42bfSRobert Love * @shost: The SCSI host whose port state is to be determined 2643a3b42bfSRobert Love */ 26542e9a92fSRobert Love void fc_get_host_port_state(struct Scsi_Host *shost) 26642e9a92fSRobert Love { 2673a3b42bfSRobert Love struct fc_lport *lport = shost_priv(shost); 26842e9a92fSRobert Love 2693a3b42bfSRobert Love mutex_lock(&lport->lp_mutex); 2703a3b42bfSRobert Love if (!lport->link_up) 2718faecddbSChris Leech fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; 27242e9a92fSRobert Love else 2733a3b42bfSRobert Love switch (lport->state) { 2748faecddbSChris Leech case LPORT_ST_READY: 2758faecddbSChris Leech fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; 2768faecddbSChris Leech break; 2778faecddbSChris Leech default: 27842e9a92fSRobert Love fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; 27942e9a92fSRobert Love } 2803a3b42bfSRobert Love mutex_unlock(&lport->lp_mutex); 2818faecddbSChris Leech } 28242e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_port_state); 28342e9a92fSRobert Love 2843a3b42bfSRobert Love /** 2853a3b42bfSRobert Love * fc_get_host_speed() - Return the speed of the given Scsi_Host 2863a3b42bfSRobert Love * @shost: The SCSI host whose port speed is to be determined 2873a3b42bfSRobert Love */ 28842e9a92fSRobert Love void fc_get_host_speed(struct Scsi_Host *shost) 28942e9a92fSRobert Love { 29042e9a92fSRobert Love struct fc_lport *lport = shost_priv(shost); 29142e9a92fSRobert Love 29242e9a92fSRobert Love fc_host_speed(shost) = lport->link_speed; 29342e9a92fSRobert Love } 29442e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_speed); 29542e9a92fSRobert Love 2963a3b42bfSRobert Love /** 2973a3b42bfSRobert Love * fc_get_host_stats() - Return the Scsi_Host's statistics 2983a3b42bfSRobert Love * @shost: The SCSI host whose statistics are to be returned 2993a3b42bfSRobert Love */ 30042e9a92fSRobert Love struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost) 30142e9a92fSRobert Love { 3021bd49b48SVasu Dev struct fc_host_statistics *fc_stats; 3033a3b42bfSRobert Love struct fc_lport *lport = shost_priv(shost); 30442e9a92fSRobert Love struct timespec v0, v1; 305582b45bcSRobert Love unsigned int cpu; 3065f0e385fSJoe Eykholt u64 fcp_in_bytes = 0; 3075f0e385fSJoe Eykholt u64 fcp_out_bytes = 0; 30842e9a92fSRobert Love 3091bd49b48SVasu Dev fc_stats = &lport->host_stats; 3101bd49b48SVasu Dev memset(fc_stats, 0, sizeof(struct fc_host_statistics)); 31142e9a92fSRobert Love 31242e9a92fSRobert Love jiffies_to_timespec(jiffies, &v0); 3133a3b42bfSRobert Love jiffies_to_timespec(lport->boot_time, &v1); 3141bd49b48SVasu Dev fc_stats->seconds_since_last_reset = (v0.tv_sec - v1.tv_sec); 31542e9a92fSRobert Love 316582b45bcSRobert Love for_each_possible_cpu(cpu) { 3171bd49b48SVasu Dev struct fc_stats *stats; 318582b45bcSRobert Love 3191bd49b48SVasu Dev stats = per_cpu_ptr(lport->stats, cpu); 320582b45bcSRobert Love 3211bd49b48SVasu Dev fc_stats->tx_frames += stats->TxFrames; 3221bd49b48SVasu Dev fc_stats->tx_words += stats->TxWords; 3231bd49b48SVasu Dev fc_stats->rx_frames += stats->RxFrames; 3241bd49b48SVasu Dev fc_stats->rx_words += stats->RxWords; 3251bd49b48SVasu Dev fc_stats->error_frames += stats->ErrorFrames; 3261bd49b48SVasu Dev fc_stats->invalid_crc_count += stats->InvalidCRCCount; 3271bd49b48SVasu Dev fc_stats->fcp_input_requests += stats->InputRequests; 3281bd49b48SVasu Dev fc_stats->fcp_output_requests += stats->OutputRequests; 3291bd49b48SVasu Dev fc_stats->fcp_control_requests += stats->ControlRequests; 3305f0e385fSJoe Eykholt fcp_in_bytes += stats->InputBytes; 3315f0e385fSJoe Eykholt fcp_out_bytes += stats->OutputBytes; 3321bd49b48SVasu Dev fc_stats->link_failure_count += stats->LinkFailureCount; 33342e9a92fSRobert Love } 3341bd49b48SVasu Dev fc_stats->fcp_input_megabytes = div_u64(fcp_in_bytes, 1000000); 3351bd49b48SVasu Dev fc_stats->fcp_output_megabytes = div_u64(fcp_out_bytes, 1000000); 3361bd49b48SVasu Dev fc_stats->lip_count = -1; 3371bd49b48SVasu Dev fc_stats->nos_count = -1; 3381bd49b48SVasu Dev fc_stats->loss_of_sync_count = -1; 3391bd49b48SVasu Dev fc_stats->loss_of_signal_count = -1; 3401bd49b48SVasu Dev fc_stats->prim_seq_protocol_err_count = -1; 3411bd49b48SVasu Dev fc_stats->dumped_frames = -1; 3421bd49b48SVasu Dev return fc_stats; 34342e9a92fSRobert Love } 34442e9a92fSRobert Love EXPORT_SYMBOL(fc_get_host_stats); 34542e9a92fSRobert Love 3463a3b42bfSRobert Love /** 3473a3b42bfSRobert Love * fc_lport_flogi_fill() - Fill in FLOGI command for request 3483a3b42bfSRobert Love * @lport: The local port the FLOGI is for 3493a3b42bfSRobert Love * @flogi: The FLOGI command 3503a3b42bfSRobert Love * @op: The opcode 35142e9a92fSRobert Love */ 3523a3b42bfSRobert Love static void fc_lport_flogi_fill(struct fc_lport *lport, 3533a3b42bfSRobert Love struct fc_els_flogi *flogi, 35442e9a92fSRobert Love unsigned int op) 35542e9a92fSRobert Love { 35642e9a92fSRobert Love struct fc_els_csp *sp; 35742e9a92fSRobert Love struct fc_els_cssp *cp; 35842e9a92fSRobert Love 35942e9a92fSRobert Love memset(flogi, 0, sizeof(*flogi)); 36042e9a92fSRobert Love flogi->fl_cmd = (u8) op; 36142e9a92fSRobert Love put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn); 36242e9a92fSRobert Love put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn); 36342e9a92fSRobert Love sp = &flogi->fl_csp; 36442e9a92fSRobert Love sp->sp_hi_ver = 0x20; 36542e9a92fSRobert Love sp->sp_lo_ver = 0x20; 36642e9a92fSRobert Love sp->sp_bb_cred = htons(10); /* this gets set by gateway */ 36742e9a92fSRobert Love sp->sp_bb_data = htons((u16) lport->mfs); 36842e9a92fSRobert Love cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */ 36942e9a92fSRobert Love cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ); 37042e9a92fSRobert Love if (op != ELS_FLOGI) { 37142e9a92fSRobert Love sp->sp_features = htons(FC_SP_FT_CIRO); 37242e9a92fSRobert Love sp->sp_tot_seq = htons(255); /* seq. we accept */ 37342e9a92fSRobert Love sp->sp_rel_off = htons(0x1f); 37442e9a92fSRobert Love sp->sp_e_d_tov = htonl(lport->e_d_tov); 37542e9a92fSRobert Love 37642e9a92fSRobert Love cp->cp_rdfs = htons((u16) lport->mfs); 37742e9a92fSRobert Love cp->cp_con_seq = htons(255); 37842e9a92fSRobert Love cp->cp_open_seq = 1; 37942e9a92fSRobert Love } 38042e9a92fSRobert Love } 38142e9a92fSRobert Love 3823a3b42bfSRobert Love /** 3833a3b42bfSRobert Love * fc_lport_add_fc4_type() - Add a supported FC-4 type to a local port 3843a3b42bfSRobert Love * @lport: The local port to add a new FC-4 type to 3853a3b42bfSRobert Love * @type: The new FC-4 type 38642e9a92fSRobert Love */ 38742e9a92fSRobert Love static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type) 38842e9a92fSRobert Love { 38942e9a92fSRobert Love __be32 *mp; 39042e9a92fSRobert Love 39142e9a92fSRobert Love mp = &lport->fcts.ff_type_map[type / FC_NS_BPW]; 39242e9a92fSRobert Love *mp = htonl(ntohl(*mp) | 1UL << (type % FC_NS_BPW)); 39342e9a92fSRobert Love } 39442e9a92fSRobert Love 39542e9a92fSRobert Love /** 39634f42a07SRobert Love * fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report. 39725985edcSLucas De Marchi * @lport: Fibre Channel local port receiving the RLIR 39892261156SJoe Eykholt * @fp: The RLIR request frame 39942e9a92fSRobert Love * 4001b69bc06SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 40142e9a92fSRobert Love * this function. 40242e9a92fSRobert Love */ 40392261156SJoe Eykholt static void fc_lport_recv_rlir_req(struct fc_lport *lport, struct fc_frame *fp) 40442e9a92fSRobert Love { 4057414705eSRobert Love FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n", 40642e9a92fSRobert Love fc_lport_state(lport)); 40742e9a92fSRobert Love 40892261156SJoe Eykholt lport->tt.seq_els_rsp_send(fp, ELS_LS_ACC, NULL); 40942e9a92fSRobert Love fc_frame_free(fp); 41042e9a92fSRobert Love } 41142e9a92fSRobert Love 41242e9a92fSRobert Love /** 41334f42a07SRobert Love * fc_lport_recv_echo_req() - Handle received ECHO request 41425985edcSLucas De Marchi * @lport: The local port receiving the ECHO 41592261156SJoe Eykholt * @fp: ECHO request frame 41642e9a92fSRobert Love * 4171b69bc06SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 41842e9a92fSRobert Love * this function. 41942e9a92fSRobert Love */ 42092261156SJoe Eykholt static void fc_lport_recv_echo_req(struct fc_lport *lport, 42192261156SJoe Eykholt struct fc_frame *in_fp) 42242e9a92fSRobert Love { 42342e9a92fSRobert Love struct fc_frame *fp; 42442e9a92fSRobert Love unsigned int len; 42542e9a92fSRobert Love void *pp; 42642e9a92fSRobert Love void *dp; 42742e9a92fSRobert Love 4281b69bc06SJoe Eykholt FC_LPORT_DBG(lport, "Received ECHO request while in state %s\n", 42942e9a92fSRobert Love fc_lport_state(lport)); 43042e9a92fSRobert Love 43142e9a92fSRobert Love len = fr_len(in_fp) - sizeof(struct fc_frame_header); 43242e9a92fSRobert Love pp = fc_frame_payload_get(in_fp, len); 43342e9a92fSRobert Love 43442e9a92fSRobert Love if (len < sizeof(__be32)) 43542e9a92fSRobert Love len = sizeof(__be32); 43642e9a92fSRobert Love 43742e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 43842e9a92fSRobert Love if (fp) { 43942e9a92fSRobert Love dp = fc_frame_payload_get(fp, len); 44042e9a92fSRobert Love memcpy(dp, pp, len); 4411b69bc06SJoe Eykholt *((__be32 *)dp) = htonl(ELS_LS_ACC << 24); 44224f089e2SJoe Eykholt fc_fill_reply_hdr(fp, in_fp, FC_RCTL_ELS_REP, 0); 44324f089e2SJoe Eykholt lport->tt.frame_send(lport, fp); 44442e9a92fSRobert Love } 44542e9a92fSRobert Love fc_frame_free(in_fp); 44642e9a92fSRobert Love } 44742e9a92fSRobert Love 44842e9a92fSRobert Love /** 4491b69bc06SJoe Eykholt * fc_lport_recv_rnid_req() - Handle received Request Node ID data request 45025985edcSLucas De Marchi * @lport: The local port receiving the RNID 45192261156SJoe Eykholt * @fp: The RNID request frame 45242e9a92fSRobert Love * 4531b69bc06SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 45442e9a92fSRobert Love * this function. 45542e9a92fSRobert Love */ 45692261156SJoe Eykholt static void fc_lport_recv_rnid_req(struct fc_lport *lport, 45792261156SJoe Eykholt struct fc_frame *in_fp) 45842e9a92fSRobert Love { 45942e9a92fSRobert Love struct fc_frame *fp; 46042e9a92fSRobert Love struct fc_els_rnid *req; 46142e9a92fSRobert Love struct { 46242e9a92fSRobert Love struct fc_els_rnid_resp rnid; 46342e9a92fSRobert Love struct fc_els_rnid_cid cid; 46442e9a92fSRobert Love struct fc_els_rnid_gen gen; 46542e9a92fSRobert Love } *rp; 46642e9a92fSRobert Love struct fc_seq_els_data rjt_data; 46742e9a92fSRobert Love u8 fmt; 46842e9a92fSRobert Love size_t len; 46942e9a92fSRobert Love 4707414705eSRobert Love FC_LPORT_DBG(lport, "Received RNID request while in state %s\n", 47142e9a92fSRobert Love fc_lport_state(lport)); 47242e9a92fSRobert Love 47342e9a92fSRobert Love req = fc_frame_payload_get(in_fp, sizeof(*req)); 47442e9a92fSRobert Love if (!req) { 47542e9a92fSRobert Love rjt_data.reason = ELS_RJT_LOGIC; 47642e9a92fSRobert Love rjt_data.explan = ELS_EXPL_NONE; 47792261156SJoe Eykholt lport->tt.seq_els_rsp_send(in_fp, ELS_LS_RJT, &rjt_data); 47842e9a92fSRobert Love } else { 47942e9a92fSRobert Love fmt = req->rnid_fmt; 48042e9a92fSRobert Love len = sizeof(*rp); 48142e9a92fSRobert Love if (fmt != ELS_RNIDF_GEN || 48242e9a92fSRobert Love ntohl(lport->rnid_gen.rnid_atype) == 0) { 48342e9a92fSRobert Love fmt = ELS_RNIDF_NONE; /* nothing to provide */ 48442e9a92fSRobert Love len -= sizeof(rp->gen); 48542e9a92fSRobert Love } 48642e9a92fSRobert Love fp = fc_frame_alloc(lport, len); 48742e9a92fSRobert Love if (fp) { 48842e9a92fSRobert Love rp = fc_frame_payload_get(fp, len); 48942e9a92fSRobert Love memset(rp, 0, len); 49042e9a92fSRobert Love rp->rnid.rnid_cmd = ELS_LS_ACC; 49142e9a92fSRobert Love rp->rnid.rnid_fmt = fmt; 49242e9a92fSRobert Love rp->rnid.rnid_cid_len = sizeof(rp->cid); 49342e9a92fSRobert Love rp->cid.rnid_wwpn = htonll(lport->wwpn); 49442e9a92fSRobert Love rp->cid.rnid_wwnn = htonll(lport->wwnn); 49542e9a92fSRobert Love if (fmt == ELS_RNIDF_GEN) { 49642e9a92fSRobert Love rp->rnid.rnid_sid_len = sizeof(rp->gen); 49742e9a92fSRobert Love memcpy(&rp->gen, &lport->rnid_gen, 49842e9a92fSRobert Love sizeof(rp->gen)); 49942e9a92fSRobert Love } 50024f089e2SJoe Eykholt fc_fill_reply_hdr(fp, in_fp, FC_RCTL_ELS_REP, 0); 50124f089e2SJoe Eykholt lport->tt.frame_send(lport, fp); 50242e9a92fSRobert Love } 50342e9a92fSRobert Love } 50442e9a92fSRobert Love fc_frame_free(in_fp); 50542e9a92fSRobert Love } 50642e9a92fSRobert Love 50742e9a92fSRobert Love /** 50834f42a07SRobert Love * fc_lport_recv_logo_req() - Handle received fabric LOGO request 50925985edcSLucas De Marchi * @lport: The local port receiving the LOGO 51092261156SJoe Eykholt * @fp: The LOGO request frame 51142e9a92fSRobert Love * 51242e9a92fSRobert Love * Locking Note: The lport lock is exected to be held before calling 51342e9a92fSRobert Love * this function. 51442e9a92fSRobert Love */ 51592261156SJoe Eykholt static void fc_lport_recv_logo_req(struct fc_lport *lport, struct fc_frame *fp) 51642e9a92fSRobert Love { 51792261156SJoe Eykholt lport->tt.seq_els_rsp_send(fp, ELS_LS_ACC, NULL); 51842e9a92fSRobert Love fc_lport_enter_reset(lport); 51942e9a92fSRobert Love fc_frame_free(fp); 52042e9a92fSRobert Love } 52142e9a92fSRobert Love 52242e9a92fSRobert Love /** 52334f42a07SRobert Love * fc_fabric_login() - Start the lport state machine 5243a3b42bfSRobert Love * @lport: The local port that should log into the fabric 52542e9a92fSRobert Love * 52642e9a92fSRobert Love * Locking Note: This function should not be called 52742e9a92fSRobert Love * with the lport lock held. 52842e9a92fSRobert Love */ 52942e9a92fSRobert Love int fc_fabric_login(struct fc_lport *lport) 53042e9a92fSRobert Love { 53142e9a92fSRobert Love int rc = -1; 53242e9a92fSRobert Love 53342e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 53455a66d3cSVasu Dev if (lport->state == LPORT_ST_DISABLED || 53555a66d3cSVasu Dev lport->state == LPORT_ST_LOGO) { 53655a66d3cSVasu Dev fc_lport_state_enter(lport, LPORT_ST_RESET); 53742e9a92fSRobert Love fc_lport_enter_reset(lport); 53842e9a92fSRobert Love rc = 0; 53942e9a92fSRobert Love } 54042e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 54142e9a92fSRobert Love 54242e9a92fSRobert Love return rc; 54342e9a92fSRobert Love } 54442e9a92fSRobert Love EXPORT_SYMBOL(fc_fabric_login); 54542e9a92fSRobert Love 54642e9a92fSRobert Love /** 5478faecddbSChris Leech * __fc_linkup() - Handler for transport linkup events 5488faecddbSChris Leech * @lport: The lport whose link is up 5498faecddbSChris Leech * 5508faecddbSChris Leech * Locking: must be called with the lp_mutex held 5518faecddbSChris Leech */ 5528faecddbSChris Leech void __fc_linkup(struct fc_lport *lport) 5538faecddbSChris Leech { 5548faecddbSChris Leech if (!lport->link_up) { 5558faecddbSChris Leech lport->link_up = 1; 5568faecddbSChris Leech 5578faecddbSChris Leech if (lport->state == LPORT_ST_RESET) 5588faecddbSChris Leech fc_lport_enter_flogi(lport); 5598faecddbSChris Leech } 5608faecddbSChris Leech } 5618faecddbSChris Leech 5628faecddbSChris Leech /** 56334f42a07SRobert Love * fc_linkup() - Handler for transport linkup events 5643a3b42bfSRobert Love * @lport: The local port whose link is up 56542e9a92fSRobert Love */ 56642e9a92fSRobert Love void fc_linkup(struct fc_lport *lport) 56742e9a92fSRobert Love { 568ce8b5df0SChris Leech printk(KERN_INFO "host%d: libfc: Link up on port (%6.6x)\n", 5697b2787ecSRobert Love lport->host->host_no, lport->port_id); 57042e9a92fSRobert Love 57142e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 5728faecddbSChris Leech __fc_linkup(lport); 57342e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 57442e9a92fSRobert Love } 57542e9a92fSRobert Love EXPORT_SYMBOL(fc_linkup); 57642e9a92fSRobert Love 57742e9a92fSRobert Love /** 5788faecddbSChris Leech * __fc_linkdown() - Handler for transport linkdown events 5798faecddbSChris Leech * @lport: The lport whose link is down 5808faecddbSChris Leech * 5818faecddbSChris Leech * Locking: must be called with the lp_mutex held 5828faecddbSChris Leech */ 5838faecddbSChris Leech void __fc_linkdown(struct fc_lport *lport) 5848faecddbSChris Leech { 5858faecddbSChris Leech if (lport->link_up) { 5868faecddbSChris Leech lport->link_up = 0; 5878faecddbSChris Leech fc_lport_enter_reset(lport); 5888faecddbSChris Leech lport->tt.fcp_cleanup(lport); 5898faecddbSChris Leech } 5908faecddbSChris Leech } 5918faecddbSChris Leech 5928faecddbSChris Leech /** 59334f42a07SRobert Love * fc_linkdown() - Handler for transport linkdown events 5943a3b42bfSRobert Love * @lport: The local port whose link is down 59542e9a92fSRobert Love */ 59642e9a92fSRobert Love void fc_linkdown(struct fc_lport *lport) 59742e9a92fSRobert Love { 598ce8b5df0SChris Leech printk(KERN_INFO "host%d: libfc: Link down on port (%6.6x)\n", 5997b2787ecSRobert Love lport->host->host_no, lport->port_id); 60042e9a92fSRobert Love 6018faecddbSChris Leech mutex_lock(&lport->lp_mutex); 6028faecddbSChris Leech __fc_linkdown(lport); 60342e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 60442e9a92fSRobert Love } 60542e9a92fSRobert Love EXPORT_SYMBOL(fc_linkdown); 60642e9a92fSRobert Love 60742e9a92fSRobert Love /** 60834f42a07SRobert Love * fc_fabric_logoff() - Logout of the fabric 6093a3b42bfSRobert Love * @lport: The local port to logoff the fabric 61042e9a92fSRobert Love * 61142e9a92fSRobert Love * Return value: 61242e9a92fSRobert Love * 0 for success, -1 for failure 61334f42a07SRobert Love */ 61442e9a92fSRobert Love int fc_fabric_logoff(struct fc_lport *lport) 61542e9a92fSRobert Love { 61642e9a92fSRobert Love lport->tt.disc_stop_final(lport); 61742e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 6183a3b42bfSRobert Love if (lport->dns_rdata) 6193a3b42bfSRobert Love lport->tt.rport_logoff(lport->dns_rdata); 620a0fd2e49SAbhijeet Joglekar mutex_unlock(&lport->lp_mutex); 621a0fd2e49SAbhijeet Joglekar lport->tt.rport_flush_queue(); 622a0fd2e49SAbhijeet Joglekar mutex_lock(&lport->lp_mutex); 62342e9a92fSRobert Love fc_lport_enter_logo(lport); 62442e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 625f7db2c15SSteve Ma cancel_delayed_work_sync(&lport->retry_work); 62642e9a92fSRobert Love return 0; 62742e9a92fSRobert Love } 62842e9a92fSRobert Love EXPORT_SYMBOL(fc_fabric_logoff); 62942e9a92fSRobert Love 63042e9a92fSRobert Love /** 6313a3b42bfSRobert Love * fc_lport_destroy() - Unregister a fc_lport 6323a3b42bfSRobert Love * @lport: The local port to unregister 63342e9a92fSRobert Love * 63442e9a92fSRobert Love * Note: 63542e9a92fSRobert Love * exit routine for fc_lport instance 63642e9a92fSRobert Love * clean-up all the allocated memory 63742e9a92fSRobert Love * and free up other system resources. 63842e9a92fSRobert Love * 63934f42a07SRobert Love */ 64042e9a92fSRobert Love int fc_lport_destroy(struct fc_lport *lport) 64142e9a92fSRobert Love { 642bbf15669SAbhijeet Joglekar mutex_lock(&lport->lp_mutex); 643b1d9fd55SJoe Eykholt lport->state = LPORT_ST_DISABLED; 644bbf15669SAbhijeet Joglekar lport->link_up = 0; 64542e9a92fSRobert Love lport->tt.frame_send = fc_frame_drop; 646bbf15669SAbhijeet Joglekar mutex_unlock(&lport->lp_mutex); 647bbf15669SAbhijeet Joglekar 64842e9a92fSRobert Love lport->tt.fcp_abort_io(lport); 649e9ba8b42SJoe Eykholt lport->tt.disc_stop_final(lport); 6501f6ff364SAbhijeet Joglekar lport->tt.exch_mgr_reset(lport, 0, 0); 651061446a1SVasu Dev cancel_delayed_work_sync(&lport->retry_work); 65270d53b04SJoe Eykholt fc_fc4_del_lport(lport); 65342e9a92fSRobert Love return 0; 65442e9a92fSRobert Love } 65542e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_destroy); 65642e9a92fSRobert Love 65742e9a92fSRobert Love /** 6583a3b42bfSRobert Love * fc_set_mfs() - Set the maximum frame size for a local port 6593a3b42bfSRobert Love * @lport: The local port to set the MFS for 6603a3b42bfSRobert Love * @mfs: The new MFS 66134f42a07SRobert Love */ 66242e9a92fSRobert Love int fc_set_mfs(struct fc_lport *lport, u32 mfs) 66342e9a92fSRobert Love { 66442e9a92fSRobert Love unsigned int old_mfs; 66542e9a92fSRobert Love int rc = -EINVAL; 66642e9a92fSRobert Love 66742e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 66842e9a92fSRobert Love 66942e9a92fSRobert Love old_mfs = lport->mfs; 67042e9a92fSRobert Love 67142e9a92fSRobert Love if (mfs >= FC_MIN_MAX_FRAME) { 67242e9a92fSRobert Love mfs &= ~3; 67342e9a92fSRobert Love if (mfs > FC_MAX_FRAME) 67442e9a92fSRobert Love mfs = FC_MAX_FRAME; 67542e9a92fSRobert Love mfs -= sizeof(struct fc_frame_header); 67642e9a92fSRobert Love lport->mfs = mfs; 67742e9a92fSRobert Love rc = 0; 67842e9a92fSRobert Love } 67942e9a92fSRobert Love 68042e9a92fSRobert Love if (!rc && mfs < old_mfs) 68142e9a92fSRobert Love fc_lport_enter_reset(lport); 68242e9a92fSRobert Love 68342e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 68442e9a92fSRobert Love 68542e9a92fSRobert Love return rc; 68642e9a92fSRobert Love } 68742e9a92fSRobert Love EXPORT_SYMBOL(fc_set_mfs); 68842e9a92fSRobert Love 68942e9a92fSRobert Love /** 69034f42a07SRobert Love * fc_lport_disc_callback() - Callback for discovery events 6913a3b42bfSRobert Love * @lport: The local port receiving the event 69242e9a92fSRobert Love * @event: The discovery event 69342e9a92fSRobert Love */ 694c6b21c93SBart Van Assche static void fc_lport_disc_callback(struct fc_lport *lport, 695c6b21c93SBart Van Assche enum fc_disc_event event) 69642e9a92fSRobert Love { 69742e9a92fSRobert Love switch (event) { 69842e9a92fSRobert Love case DISC_EV_SUCCESS: 6997414705eSRobert Love FC_LPORT_DBG(lport, "Discovery succeeded\n"); 70042e9a92fSRobert Love break; 70142e9a92fSRobert Love case DISC_EV_FAILED: 702e6d8a1b0SJoe Eykholt printk(KERN_ERR "host%d: libfc: " 703ce8b5df0SChris Leech "Discovery failed for port (%6.6x)\n", 7047b2787ecSRobert Love lport->host->host_no, lport->port_id); 70542e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 70642e9a92fSRobert Love fc_lport_enter_reset(lport); 70742e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 70842e9a92fSRobert Love break; 70942e9a92fSRobert Love case DISC_EV_NONE: 71042e9a92fSRobert Love WARN_ON(1); 71142e9a92fSRobert Love break; 71242e9a92fSRobert Love } 71342e9a92fSRobert Love } 71442e9a92fSRobert Love 71542e9a92fSRobert Love /** 71634f42a07SRobert Love * fc_rport_enter_ready() - Enter the ready state and start discovery 7173a3b42bfSRobert Love * @lport: The local port that is ready 71842e9a92fSRobert Love * 71942e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 72042e9a92fSRobert Love * this routine. 72142e9a92fSRobert Love */ 72242e9a92fSRobert Love static void fc_lport_enter_ready(struct fc_lport *lport) 72342e9a92fSRobert Love { 7247414705eSRobert Love FC_LPORT_DBG(lport, "Entered READY from state %s\n", 7257414705eSRobert Love fc_lport_state(lport)); 72642e9a92fSRobert Love 72742e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_READY); 7288faecddbSChris Leech if (lport->vport) 7298faecddbSChris Leech fc_vport_set_state(lport->vport, FC_VPORT_ACTIVE); 7308faecddbSChris Leech fc_vports_linkchange(lport); 73142e9a92fSRobert Love 7323a3b42bfSRobert Love if (!lport->ptp_rdata) 73342e9a92fSRobert Love lport->tt.disc_start(fc_lport_disc_callback, lport); 73442e9a92fSRobert Love } 73542e9a92fSRobert Love 73642e9a92fSRobert Love /** 737093bb6a2SJoe Eykholt * fc_lport_set_port_id() - set the local port Port ID 738093bb6a2SJoe Eykholt * @lport: The local port which will have its Port ID set. 739093bb6a2SJoe Eykholt * @port_id: The new port ID. 740093bb6a2SJoe Eykholt * @fp: The frame containing the incoming request, or NULL. 741093bb6a2SJoe Eykholt * 742093bb6a2SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 743093bb6a2SJoe Eykholt * this function. 744093bb6a2SJoe Eykholt */ 745093bb6a2SJoe Eykholt static void fc_lport_set_port_id(struct fc_lport *lport, u32 port_id, 746093bb6a2SJoe Eykholt struct fc_frame *fp) 747093bb6a2SJoe Eykholt { 748093bb6a2SJoe Eykholt if (port_id) 749ce8b5df0SChris Leech printk(KERN_INFO "host%d: Assigned Port ID %6.6x\n", 750093bb6a2SJoe Eykholt lport->host->host_no, port_id); 751093bb6a2SJoe Eykholt 7527b2787ecSRobert Love lport->port_id = port_id; 7537b2787ecSRobert Love 7547b2787ecSRobert Love /* Update the fc_host */ 755093bb6a2SJoe Eykholt fc_host_port_id(lport->host) = port_id; 7567b2787ecSRobert Love 757093bb6a2SJoe Eykholt if (lport->tt.lport_set_port_id) 758093bb6a2SJoe Eykholt lport->tt.lport_set_port_id(lport, port_id, fp); 759093bb6a2SJoe Eykholt } 760093bb6a2SJoe Eykholt 761093bb6a2SJoe Eykholt /** 7623726f358SJoe Eykholt * fc_lport_set_port_id() - set the local port Port ID for point-to-multipoint 7633726f358SJoe Eykholt * @lport: The local port which will have its Port ID set. 7643726f358SJoe Eykholt * @port_id: The new port ID. 7653726f358SJoe Eykholt * 7663726f358SJoe Eykholt * Called by the lower-level driver when transport sets the local port_id. 7673726f358SJoe Eykholt * This is used in VN_port to VN_port mode for FCoE, and causes FLOGI and 7683726f358SJoe Eykholt * discovery to be skipped. 7693726f358SJoe Eykholt */ 7703726f358SJoe Eykholt void fc_lport_set_local_id(struct fc_lport *lport, u32 port_id) 7713726f358SJoe Eykholt { 7723726f358SJoe Eykholt mutex_lock(&lport->lp_mutex); 7733726f358SJoe Eykholt 7743726f358SJoe Eykholt fc_lport_set_port_id(lport, port_id, NULL); 7753726f358SJoe Eykholt 7763726f358SJoe Eykholt switch (lport->state) { 7773726f358SJoe Eykholt case LPORT_ST_RESET: 7783726f358SJoe Eykholt case LPORT_ST_FLOGI: 7793726f358SJoe Eykholt if (port_id) 7803726f358SJoe Eykholt fc_lport_enter_ready(lport); 7813726f358SJoe Eykholt break; 7823726f358SJoe Eykholt default: 7833726f358SJoe Eykholt break; 7843726f358SJoe Eykholt } 7853726f358SJoe Eykholt mutex_unlock(&lport->lp_mutex); 7863726f358SJoe Eykholt } 7873726f358SJoe Eykholt EXPORT_SYMBOL(fc_lport_set_local_id); 7883726f358SJoe Eykholt 7893726f358SJoe Eykholt /** 79034f42a07SRobert Love * fc_lport_recv_flogi_req() - Receive a FLOGI request 79125985edcSLucas De Marchi * @lport: The local port that received the request 79292261156SJoe Eykholt * @rx_fp: The FLOGI frame 79342e9a92fSRobert Love * 79442e9a92fSRobert Love * A received FLOGI request indicates a point-to-point connection. 79542e9a92fSRobert Love * Accept it with the common service parameters indicating our N port. 79642e9a92fSRobert Love * Set up to do a PLOGI if we have the higher-number WWPN. 79742e9a92fSRobert Love * 7981b69bc06SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 79942e9a92fSRobert Love * this function. 80042e9a92fSRobert Love */ 80192261156SJoe Eykholt static void fc_lport_recv_flogi_req(struct fc_lport *lport, 80292261156SJoe Eykholt struct fc_frame *rx_fp) 80342e9a92fSRobert Love { 80442e9a92fSRobert Love struct fc_frame *fp; 80524f089e2SJoe Eykholt struct fc_frame_header *fh; 80642e9a92fSRobert Love struct fc_els_flogi *flp; 80742e9a92fSRobert Love struct fc_els_flogi *new_flp; 80842e9a92fSRobert Love u64 remote_wwpn; 80942e9a92fSRobert Love u32 remote_fid; 81042e9a92fSRobert Love u32 local_fid; 81142e9a92fSRobert Love 8127414705eSRobert Love FC_LPORT_DBG(lport, "Received FLOGI request while in state %s\n", 81342e9a92fSRobert Love fc_lport_state(lport)); 81442e9a92fSRobert Love 815251748a9SJoe Eykholt remote_fid = fc_frame_sid(rx_fp); 81642e9a92fSRobert Love flp = fc_frame_payload_get(rx_fp, sizeof(*flp)); 81742e9a92fSRobert Love if (!flp) 81842e9a92fSRobert Love goto out; 81942e9a92fSRobert Love remote_wwpn = get_unaligned_be64(&flp->fl_wwpn); 82042e9a92fSRobert Love if (remote_wwpn == lport->wwpn) { 821e6d8a1b0SJoe Eykholt printk(KERN_WARNING "host%d: libfc: Received FLOGI from port " 8229f8f3aa6SChris Leech "with same WWPN %16.16llx\n", 823e6d8a1b0SJoe Eykholt lport->host->host_no, remote_wwpn); 82442e9a92fSRobert Love goto out; 82542e9a92fSRobert Love } 8269f8f3aa6SChris Leech FC_LPORT_DBG(lport, "FLOGI from port WWPN %16.16llx\n", remote_wwpn); 82742e9a92fSRobert Love 82842e9a92fSRobert Love /* 82942e9a92fSRobert Love * XXX what is the right thing to do for FIDs? 83042e9a92fSRobert Love * The originator might expect our S_ID to be 0xfffffe. 83142e9a92fSRobert Love * But if so, both of us could end up with the same FID. 83242e9a92fSRobert Love */ 83342e9a92fSRobert Love local_fid = FC_LOCAL_PTP_FID_LO; 83442e9a92fSRobert Love if (remote_wwpn < lport->wwpn) { 83542e9a92fSRobert Love local_fid = FC_LOCAL_PTP_FID_HI; 83642e9a92fSRobert Love if (!remote_fid || remote_fid == local_fid) 83742e9a92fSRobert Love remote_fid = FC_LOCAL_PTP_FID_LO; 83842e9a92fSRobert Love } else if (!remote_fid) { 83942e9a92fSRobert Love remote_fid = FC_LOCAL_PTP_FID_HI; 84042e9a92fSRobert Love } 84142e9a92fSRobert Love 842093bb6a2SJoe Eykholt fc_lport_set_port_id(lport, local_fid, rx_fp); 84342e9a92fSRobert Love 84442e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(*flp)); 84542e9a92fSRobert Love if (fp) { 84642e9a92fSRobert Love new_flp = fc_frame_payload_get(fp, sizeof(*flp)); 84742e9a92fSRobert Love fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI); 84842e9a92fSRobert Love new_flp->fl_cmd = (u8) ELS_LS_ACC; 84942e9a92fSRobert Love 85042e9a92fSRobert Love /* 85142e9a92fSRobert Love * Send the response. If this fails, the originator should 85242e9a92fSRobert Love * repeat the sequence. 85342e9a92fSRobert Love */ 85424f089e2SJoe Eykholt fc_fill_reply_hdr(fp, rx_fp, FC_RCTL_ELS_REP, 0); 85524f089e2SJoe Eykholt fh = fc_frame_header_get(fp); 85624f089e2SJoe Eykholt hton24(fh->fh_s_id, local_fid); 85724f089e2SJoe Eykholt hton24(fh->fh_d_id, remote_fid); 85824f089e2SJoe Eykholt lport->tt.frame_send(lport, fp); 85942e9a92fSRobert Love 86042e9a92fSRobert Love } else { 86142e9a92fSRobert Love fc_lport_error(lport, fp); 86242e9a92fSRobert Love } 86342e9a92fSRobert Love fc_lport_ptp_setup(lport, remote_fid, remote_wwpn, 86442e9a92fSRobert Love get_unaligned_be64(&flp->fl_wwnn)); 86542e9a92fSRobert Love out: 86642e9a92fSRobert Love fc_frame_free(rx_fp); 86742e9a92fSRobert Love } 86842e9a92fSRobert Love 86942e9a92fSRobert Love /** 87096ad8464SJoe Eykholt * fc_lport_recv_els_req() - The generic lport ELS request handler 8713a3b42bfSRobert Love * @lport: The local port that received the request 8723a3b42bfSRobert Love * @fp: The request frame 87342e9a92fSRobert Love * 87442e9a92fSRobert Love * This function will see if the lport handles the request or 87542e9a92fSRobert Love * if an rport should handle the request. 87642e9a92fSRobert Love * 87742e9a92fSRobert Love * Locking Note: This function should not be called with the lport 87825985edcSLucas De Marchi * lock held because it will grab the lock. 87942e9a92fSRobert Love */ 88096ad8464SJoe Eykholt static void fc_lport_recv_els_req(struct fc_lport *lport, 88196ad8464SJoe Eykholt struct fc_frame *fp) 88242e9a92fSRobert Love { 88392261156SJoe Eykholt void (*recv)(struct fc_lport *, struct fc_frame *); 88442e9a92fSRobert Love 88542e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 88642e9a92fSRobert Love 88742e9a92fSRobert Love /* 88842e9a92fSRobert Love * Handle special ELS cases like FLOGI, LOGO, and 88942e9a92fSRobert Love * RSCN here. These don't require a session. 89042e9a92fSRobert Love * Even if we had a session, it might not be ready. 89142e9a92fSRobert Love */ 892e9ba8b42SJoe Eykholt if (!lport->link_up) 893e9ba8b42SJoe Eykholt fc_frame_free(fp); 89496ad8464SJoe Eykholt else { 89542e9a92fSRobert Love /* 89642e9a92fSRobert Love * Check opcode. 89742e9a92fSRobert Love */ 898131203a1SJoe Eykholt recv = lport->tt.rport_recv_req; 89942e9a92fSRobert Love switch (fc_frame_payload_op(fp)) { 90042e9a92fSRobert Love case ELS_FLOGI: 901a7b12a27SJoe Eykholt if (!lport->point_to_multipoint) 90242e9a92fSRobert Love recv = fc_lport_recv_flogi_req; 90342e9a92fSRobert Love break; 90442e9a92fSRobert Love case ELS_LOGO: 905251748a9SJoe Eykholt if (fc_frame_sid(fp) == FC_FID_FLOGI) 90642e9a92fSRobert Love recv = fc_lport_recv_logo_req; 90742e9a92fSRobert Love break; 90842e9a92fSRobert Love case ELS_RSCN: 90942e9a92fSRobert Love recv = lport->tt.disc_recv_req; 91042e9a92fSRobert Love break; 91142e9a92fSRobert Love case ELS_ECHO: 91242e9a92fSRobert Love recv = fc_lport_recv_echo_req; 91342e9a92fSRobert Love break; 91442e9a92fSRobert Love case ELS_RLIR: 91542e9a92fSRobert Love recv = fc_lport_recv_rlir_req; 91642e9a92fSRobert Love break; 91742e9a92fSRobert Love case ELS_RNID: 91842e9a92fSRobert Love recv = fc_lport_recv_rnid_req; 91942e9a92fSRobert Love break; 92042e9a92fSRobert Love } 92142e9a92fSRobert Love 92292261156SJoe Eykholt recv(lport, fp); 92342e9a92fSRobert Love } 92442e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 92542e9a92fSRobert Love } 92642e9a92fSRobert Love 92796ad8464SJoe Eykholt static int fc_lport_els_prli(struct fc_rport_priv *rdata, u32 spp_len, 92896ad8464SJoe Eykholt const struct fc_els_spp *spp_in, 92996ad8464SJoe Eykholt struct fc_els_spp *spp_out) 93096ad8464SJoe Eykholt { 93196ad8464SJoe Eykholt return FC_SPP_RESP_INVL; 93296ad8464SJoe Eykholt } 93396ad8464SJoe Eykholt 93496ad8464SJoe Eykholt struct fc4_prov fc_lport_els_prov = { 93596ad8464SJoe Eykholt .prli = fc_lport_els_prli, 93696ad8464SJoe Eykholt .recv = fc_lport_recv_els_req, 93796ad8464SJoe Eykholt }; 93896ad8464SJoe Eykholt 93996ad8464SJoe Eykholt /** 94096ad8464SJoe Eykholt * fc_lport_recv_req() - The generic lport request handler 94196ad8464SJoe Eykholt * @lport: The lport that received the request 94296ad8464SJoe Eykholt * @fp: The frame the request is in 94396ad8464SJoe Eykholt * 94496ad8464SJoe Eykholt * Locking Note: This function should not be called with the lport 94525985edcSLucas De Marchi * lock held because it may grab the lock. 94696ad8464SJoe Eykholt */ 94796ad8464SJoe Eykholt static void fc_lport_recv_req(struct fc_lport *lport, 94896ad8464SJoe Eykholt struct fc_frame *fp) 94996ad8464SJoe Eykholt { 95096ad8464SJoe Eykholt struct fc_frame_header *fh = fc_frame_header_get(fp); 95196ad8464SJoe Eykholt struct fc_seq *sp = fr_seq(fp); 95296ad8464SJoe Eykholt struct fc4_prov *prov; 95396ad8464SJoe Eykholt 95496ad8464SJoe Eykholt /* 95596ad8464SJoe Eykholt * Use RCU read lock and module_lock to be sure module doesn't 95696ad8464SJoe Eykholt * deregister and get unloaded while we're calling it. 95796ad8464SJoe Eykholt * try_module_get() is inlined and accepts a NULL parameter. 95896ad8464SJoe Eykholt * Only ELSes and FCP target ops should come through here. 95996ad8464SJoe Eykholt * The locking is unfortunate, and a better scheme is being sought. 96096ad8464SJoe Eykholt */ 96196ad8464SJoe Eykholt 96296ad8464SJoe Eykholt rcu_read_lock(); 96396ad8464SJoe Eykholt if (fh->fh_type >= FC_FC4_PROV_SIZE) 96496ad8464SJoe Eykholt goto drop; 96596ad8464SJoe Eykholt prov = rcu_dereference(fc_passive_prov[fh->fh_type]); 96696ad8464SJoe Eykholt if (!prov || !try_module_get(prov->module)) 96796ad8464SJoe Eykholt goto drop; 96896ad8464SJoe Eykholt rcu_read_unlock(); 96996ad8464SJoe Eykholt prov->recv(lport, fp); 97096ad8464SJoe Eykholt module_put(prov->module); 97196ad8464SJoe Eykholt return; 97296ad8464SJoe Eykholt drop: 97396ad8464SJoe Eykholt rcu_read_unlock(); 97496ad8464SJoe Eykholt FC_LPORT_DBG(lport, "dropping unexpected frame type %x\n", fh->fh_type); 97596ad8464SJoe Eykholt fc_frame_free(fp); 97696ad8464SJoe Eykholt lport->tt.exch_done(sp); 97796ad8464SJoe Eykholt } 97896ad8464SJoe Eykholt 97942e9a92fSRobert Love /** 9803a3b42bfSRobert Love * fc_lport_reset() - Reset a local port 9813a3b42bfSRobert Love * @lport: The local port which should be reset 98242e9a92fSRobert Love * 98342e9a92fSRobert Love * Locking Note: This functions should not be called with the 98442e9a92fSRobert Love * lport lock held. 98542e9a92fSRobert Love */ 98642e9a92fSRobert Love int fc_lport_reset(struct fc_lport *lport) 98742e9a92fSRobert Love { 988f7db2c15SSteve Ma cancel_delayed_work_sync(&lport->retry_work); 98942e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 99042e9a92fSRobert Love fc_lport_enter_reset(lport); 99142e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 99242e9a92fSRobert Love return 0; 99342e9a92fSRobert Love } 99442e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_reset); 99542e9a92fSRobert Love 99642e9a92fSRobert Love /** 9973a3b42bfSRobert Love * fc_lport_reset_locked() - Reset the local port w/ the lport lock held 9983a3b42bfSRobert Love * @lport: The local port to be reset 99942e9a92fSRobert Love * 100042e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 100142e9a92fSRobert Love * this routine. 100242e9a92fSRobert Love */ 10031190d925SJoe Eykholt static void fc_lport_reset_locked(struct fc_lport *lport) 100442e9a92fSRobert Love { 10053a3b42bfSRobert Love if (lport->dns_rdata) 10063a3b42bfSRobert Love lport->tt.rport_logoff(lport->dns_rdata); 100742e9a92fSRobert Love 10082f2ac4a0SJoe Eykholt if (lport->ptp_rdata) { 10092f2ac4a0SJoe Eykholt lport->tt.rport_logoff(lport->ptp_rdata); 10102f2ac4a0SJoe Eykholt kref_put(&lport->ptp_rdata->kref, lport->tt.rport_destroy); 10113a3b42bfSRobert Love lport->ptp_rdata = NULL; 10122f2ac4a0SJoe Eykholt } 101342e9a92fSRobert Love 101442e9a92fSRobert Love lport->tt.disc_stop(lport); 101542e9a92fSRobert Love 10161f6ff364SAbhijeet Joglekar lport->tt.exch_mgr_reset(lport, 0, 0); 101742e9a92fSRobert Love fc_host_fabric_name(lport->host) = 0; 1018093bb6a2SJoe Eykholt 10193726f358SJoe Eykholt if (lport->port_id && (!lport->point_to_multipoint || !lport->link_up)) 1020093bb6a2SJoe Eykholt fc_lport_set_port_id(lport, 0, NULL); 10211190d925SJoe Eykholt } 102242e9a92fSRobert Love 10231190d925SJoe Eykholt /** 10241190d925SJoe Eykholt * fc_lport_enter_reset() - Reset the local port 10253a3b42bfSRobert Love * @lport: The local port to be reset 10261190d925SJoe Eykholt * 10271190d925SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 10281190d925SJoe Eykholt * this routine. 10291190d925SJoe Eykholt */ 10301190d925SJoe Eykholt static void fc_lport_enter_reset(struct fc_lport *lport) 10311190d925SJoe Eykholt { 10321190d925SJoe Eykholt FC_LPORT_DBG(lport, "Entered RESET state from %s state\n", 10331190d925SJoe Eykholt fc_lport_state(lport)); 10341190d925SJoe Eykholt 103555a66d3cSVasu Dev if (lport->state == LPORT_ST_DISABLED || lport->state == LPORT_ST_LOGO) 103655a66d3cSVasu Dev return; 103755a66d3cSVasu Dev 10388faecddbSChris Leech if (lport->vport) { 10398faecddbSChris Leech if (lport->link_up) 10408faecddbSChris Leech fc_vport_set_state(lport->vport, FC_VPORT_INITIALIZING); 10418faecddbSChris Leech else 10428faecddbSChris Leech fc_vport_set_state(lport->vport, FC_VPORT_LINKDOWN); 10438faecddbSChris Leech } 10441190d925SJoe Eykholt fc_lport_state_enter(lport, LPORT_ST_RESET); 10459b7d1613SVasu Dev fc_host_post_event(lport->host, fc_get_event_number(), 10469b7d1613SVasu Dev FCH_EVT_LIPRESET, 0); 10478faecddbSChris Leech fc_vports_linkchange(lport); 10481190d925SJoe Eykholt fc_lport_reset_locked(lport); 1049b6e3c840SVasu Dev if (lport->link_up) 105042e9a92fSRobert Love fc_lport_enter_flogi(lport); 105142e9a92fSRobert Love } 105242e9a92fSRobert Love 105342e9a92fSRobert Love /** 10543a3b42bfSRobert Love * fc_lport_enter_disabled() - Disable the local port 10553a3b42bfSRobert Love * @lport: The local port to be reset 10561190d925SJoe Eykholt * 10571190d925SJoe Eykholt * Locking Note: The lport lock is expected to be held before calling 10581190d925SJoe Eykholt * this routine. 10591190d925SJoe Eykholt */ 10601190d925SJoe Eykholt static void fc_lport_enter_disabled(struct fc_lport *lport) 10611190d925SJoe Eykholt { 10621190d925SJoe Eykholt FC_LPORT_DBG(lport, "Entered disabled state from %s state\n", 10631190d925SJoe Eykholt fc_lport_state(lport)); 10641190d925SJoe Eykholt 10651190d925SJoe Eykholt fc_lport_state_enter(lport, LPORT_ST_DISABLED); 10668faecddbSChris Leech fc_vports_linkchange(lport); 10671190d925SJoe Eykholt fc_lport_reset_locked(lport); 10681190d925SJoe Eykholt } 10691190d925SJoe Eykholt 10701190d925SJoe Eykholt /** 107134f42a07SRobert Love * fc_lport_error() - Handler for any errors 10723a3b42bfSRobert Love * @lport: The local port that the error was on 10733a3b42bfSRobert Love * @fp: The error code encoded in a frame pointer 107442e9a92fSRobert Love * 107542e9a92fSRobert Love * If the error was caused by a resource allocation failure 107642e9a92fSRobert Love * then wait for half a second and retry, otherwise retry 107742e9a92fSRobert Love * after the e_d_tov time. 107842e9a92fSRobert Love */ 107942e9a92fSRobert Love static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp) 108042e9a92fSRobert Love { 108142e9a92fSRobert Love unsigned long delay = 0; 10827414705eSRobert Love FC_LPORT_DBG(lport, "Error %ld in state %s, retries %d\n", 108342e9a92fSRobert Love PTR_ERR(fp), fc_lport_state(lport), 108442e9a92fSRobert Love lport->retry_count); 108542e9a92fSRobert Love 10867f985231SBhanu Prakash Gollapudi if (PTR_ERR(fp) == -FC_EX_CLOSED) 10877f985231SBhanu Prakash Gollapudi return; 10887f985231SBhanu Prakash Gollapudi 108942e9a92fSRobert Love /* 10907f985231SBhanu Prakash Gollapudi * Memory allocation failure, or the exchange timed out 10917f985231SBhanu Prakash Gollapudi * or we received LS_RJT. 109242e9a92fSRobert Love * Retry after delay 109342e9a92fSRobert Love */ 109442e9a92fSRobert Love if (lport->retry_count < lport->max_retry_count) { 109542e9a92fSRobert Love lport->retry_count++; 109642e9a92fSRobert Love if (!fp) 109742e9a92fSRobert Love delay = msecs_to_jiffies(500); 109842e9a92fSRobert Love else 109942e9a92fSRobert Love delay = msecs_to_jiffies(lport->e_d_tov); 110042e9a92fSRobert Love 110142e9a92fSRobert Love schedule_delayed_work(&lport->retry_work, delay); 11027f985231SBhanu Prakash Gollapudi } else 110342e9a92fSRobert Love fc_lport_enter_reset(lport); 110442e9a92fSRobert Love } 110542e9a92fSRobert Love 110642e9a92fSRobert Love /** 11077cccc157SChris Leech * fc_lport_ns_resp() - Handle response to a name server 11087cccc157SChris Leech * registration exchange 11097cccc157SChris Leech * @sp: current sequence in exchange 111042e9a92fSRobert Love * @fp: response frame 111142e9a92fSRobert Love * @lp_arg: Fibre Channel host port instance 111242e9a92fSRobert Love * 111342e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 11143a3b42bfSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error() 111542e9a92fSRobert Love * and then unlock the lport. 111642e9a92fSRobert Love */ 11177cccc157SChris Leech static void fc_lport_ns_resp(struct fc_seq *sp, struct fc_frame *fp, 111842e9a92fSRobert Love void *lp_arg) 111942e9a92fSRobert Love { 112042e9a92fSRobert Love struct fc_lport *lport = lp_arg; 112142e9a92fSRobert Love struct fc_frame_header *fh; 112242e9a92fSRobert Love struct fc_ct_hdr *ct; 112342e9a92fSRobert Love 11247cccc157SChris Leech FC_LPORT_DBG(lport, "Received a ns %s\n", fc_els_resp_type(fp)); 1125f657d299SJoe Eykholt 112642e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 112742e9a92fSRobert Love return; 112842e9a92fSRobert Love 112942e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 113042e9a92fSRobert Love 1131ab593b18SJoe Eykholt if (lport->state < LPORT_ST_RNN_ID || lport->state > LPORT_ST_RFF_ID) { 11327cccc157SChris Leech FC_LPORT_DBG(lport, "Received a name server response, " 11337cccc157SChris Leech "but in state %s\n", fc_lport_state(lport)); 113476f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 113576f6804eSAbhijeet Joglekar goto err; 113642e9a92fSRobert Love goto out; 113742e9a92fSRobert Love } 113842e9a92fSRobert Love 113976f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 114076f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 114176f6804eSAbhijeet Joglekar goto err; 114276f6804eSAbhijeet Joglekar } 114376f6804eSAbhijeet Joglekar 114442e9a92fSRobert Love fh = fc_frame_header_get(fp); 114542e9a92fSRobert Love ct = fc_frame_payload_get(fp, sizeof(*ct)); 114642e9a92fSRobert Love 114742e9a92fSRobert Love if (fh && ct && fh->fh_type == FC_TYPE_CT && 114842e9a92fSRobert Love ct->ct_fs_type == FC_FST_DIR && 114942e9a92fSRobert Love ct->ct_fs_subtype == FC_NS_SUBTYPE && 115042e9a92fSRobert Love ntohs(ct->ct_cmd) == FC_FS_ACC) 11517cccc157SChris Leech switch (lport->state) { 11527cccc157SChris Leech case LPORT_ST_RNN_ID: 1153c914f7d1SChris Leech fc_lport_enter_ns(lport, LPORT_ST_RSNN_NN); 11547cccc157SChris Leech break; 11557cccc157SChris Leech case LPORT_ST_RSNN_NN: 1156c914f7d1SChris Leech fc_lport_enter_ns(lport, LPORT_ST_RSPN_ID); 11577cccc157SChris Leech break; 11587cccc157SChris Leech case LPORT_ST_RSPN_ID: 1159c914f7d1SChris Leech fc_lport_enter_ns(lport, LPORT_ST_RFT_ID); 11607cccc157SChris Leech break; 11617cccc157SChris Leech case LPORT_ST_RFT_ID: 1162ab593b18SJoe Eykholt fc_lport_enter_ns(lport, LPORT_ST_RFF_ID); 1163ab593b18SJoe Eykholt break; 1164ab593b18SJoe Eykholt case LPORT_ST_RFF_ID: 1165d78c317fSNeerav Parikh if (lport->fdmi_enabled) 1166d78c317fSNeerav Parikh fc_lport_enter_fdmi(lport); 1167d78c317fSNeerav Parikh else 11687cccc157SChris Leech fc_lport_enter_scr(lport); 11697cccc157SChris Leech break; 11707cccc157SChris Leech default: 11717cccc157SChris Leech /* should have already been caught by state checks */ 11727cccc157SChris Leech break; 11737cccc157SChris Leech } 1174c9c7bd7aSChris Leech else 1175c9c7bd7aSChris Leech fc_lport_error(lport, fp); 1176c9c7bd7aSChris Leech out: 1177c9c7bd7aSChris Leech fc_frame_free(fp); 1178c9c7bd7aSChris Leech err: 1179c9c7bd7aSChris Leech mutex_unlock(&lport->lp_mutex); 1180c9c7bd7aSChris Leech } 1181c9c7bd7aSChris Leech 1182c9c7bd7aSChris Leech /** 1183d78c317fSNeerav Parikh * fc_lport_ms_resp() - Handle response to a management server 1184d78c317fSNeerav Parikh * exchange 1185d78c317fSNeerav Parikh * @sp: current sequence in exchange 1186d78c317fSNeerav Parikh * @fp: response frame 1187d78c317fSNeerav Parikh * @lp_arg: Fibre Channel host port instance 1188d78c317fSNeerav Parikh * 1189d78c317fSNeerav Parikh * Locking Note: This function will be called without the lport lock 1190d78c317fSNeerav Parikh * held, but it will lock, call an _enter_* function or fc_lport_error() 1191d78c317fSNeerav Parikh * and then unlock the lport. 1192d78c317fSNeerav Parikh */ 1193d78c317fSNeerav Parikh static void fc_lport_ms_resp(struct fc_seq *sp, struct fc_frame *fp, 1194d78c317fSNeerav Parikh void *lp_arg) 1195d78c317fSNeerav Parikh { 1196d78c317fSNeerav Parikh struct fc_lport *lport = lp_arg; 1197d78c317fSNeerav Parikh struct fc_frame_header *fh; 1198d78c317fSNeerav Parikh struct fc_ct_hdr *ct; 1199d78c317fSNeerav Parikh 1200d78c317fSNeerav Parikh FC_LPORT_DBG(lport, "Received a ms %s\n", fc_els_resp_type(fp)); 1201d78c317fSNeerav Parikh 1202d78c317fSNeerav Parikh if (fp == ERR_PTR(-FC_EX_CLOSED)) 1203d78c317fSNeerav Parikh return; 1204d78c317fSNeerav Parikh 1205d78c317fSNeerav Parikh mutex_lock(&lport->lp_mutex); 1206d78c317fSNeerav Parikh 1207d78c317fSNeerav Parikh if (lport->state < LPORT_ST_RHBA || lport->state > LPORT_ST_DPRT) { 1208d78c317fSNeerav Parikh FC_LPORT_DBG(lport, "Received a management server response, " 1209d78c317fSNeerav Parikh "but in state %s\n", fc_lport_state(lport)); 1210d78c317fSNeerav Parikh if (IS_ERR(fp)) 1211d78c317fSNeerav Parikh goto err; 1212d78c317fSNeerav Parikh goto out; 1213d78c317fSNeerav Parikh } 1214d78c317fSNeerav Parikh 1215d78c317fSNeerav Parikh if (IS_ERR(fp)) { 1216d78c317fSNeerav Parikh fc_lport_error(lport, fp); 1217d78c317fSNeerav Parikh goto err; 1218d78c317fSNeerav Parikh } 1219d78c317fSNeerav Parikh 1220d78c317fSNeerav Parikh fh = fc_frame_header_get(fp); 1221d78c317fSNeerav Parikh ct = fc_frame_payload_get(fp, sizeof(*ct)); 1222d78c317fSNeerav Parikh 1223d78c317fSNeerav Parikh if (fh && ct && fh->fh_type == FC_TYPE_CT && 1224d78c317fSNeerav Parikh ct->ct_fs_type == FC_FST_MGMT && 1225d78c317fSNeerav Parikh ct->ct_fs_subtype == FC_FDMI_SUBTYPE) { 1226d78c317fSNeerav Parikh FC_LPORT_DBG(lport, "Received a management server response, " 1227d78c317fSNeerav Parikh "reason=%d explain=%d\n", 1228d78c317fSNeerav Parikh ct->ct_reason, 1229d78c317fSNeerav Parikh ct->ct_explan); 1230d78c317fSNeerav Parikh 1231d78c317fSNeerav Parikh switch (lport->state) { 1232d78c317fSNeerav Parikh case LPORT_ST_RHBA: 1233d78c317fSNeerav Parikh if (ntohs(ct->ct_cmd) == FC_FS_ACC) 1234d78c317fSNeerav Parikh fc_lport_enter_ms(lport, LPORT_ST_RPA); 1235d78c317fSNeerav Parikh else /* Error Skip RPA */ 1236d78c317fSNeerav Parikh fc_lport_enter_scr(lport); 1237d78c317fSNeerav Parikh break; 1238d78c317fSNeerav Parikh case LPORT_ST_RPA: 1239d78c317fSNeerav Parikh fc_lport_enter_scr(lport); 1240d78c317fSNeerav Parikh break; 1241d78c317fSNeerav Parikh case LPORT_ST_DPRT: 1242d78c317fSNeerav Parikh fc_lport_enter_ms(lport, LPORT_ST_RHBA); 1243d78c317fSNeerav Parikh break; 1244d78c317fSNeerav Parikh case LPORT_ST_DHBA: 1245d78c317fSNeerav Parikh fc_lport_enter_ms(lport, LPORT_ST_DPRT); 1246d78c317fSNeerav Parikh break; 1247d78c317fSNeerav Parikh default: 1248d78c317fSNeerav Parikh /* should have already been caught by state checks */ 1249d78c317fSNeerav Parikh break; 1250d78c317fSNeerav Parikh } 1251d78c317fSNeerav Parikh } else { 1252d78c317fSNeerav Parikh /* Invalid Frame? */ 1253d78c317fSNeerav Parikh fc_lport_error(lport, fp); 1254d78c317fSNeerav Parikh } 1255d78c317fSNeerav Parikh out: 1256d78c317fSNeerav Parikh fc_frame_free(fp); 1257d78c317fSNeerav Parikh err: 1258d78c317fSNeerav Parikh mutex_unlock(&lport->lp_mutex); 1259d78c317fSNeerav Parikh } 1260d78c317fSNeerav Parikh 1261d78c317fSNeerav Parikh /** 126234f42a07SRobert Love * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request 126342e9a92fSRobert Love * @sp: current sequence in SCR exchange 126442e9a92fSRobert Love * @fp: response frame 126542e9a92fSRobert Love * @lp_arg: Fibre Channel lport port instance that sent the registration request 126642e9a92fSRobert Love * 126742e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 126842e9a92fSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error 126942e9a92fSRobert Love * and then unlock the lport. 127042e9a92fSRobert Love */ 127142e9a92fSRobert Love static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp, 127242e9a92fSRobert Love void *lp_arg) 127342e9a92fSRobert Love { 127442e9a92fSRobert Love struct fc_lport *lport = lp_arg; 127542e9a92fSRobert Love u8 op; 127642e9a92fSRobert Love 1277f657d299SJoe Eykholt FC_LPORT_DBG(lport, "Received a SCR %s\n", fc_els_resp_type(fp)); 1278f657d299SJoe Eykholt 127942e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 128042e9a92fSRobert Love return; 128142e9a92fSRobert Love 128242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 128342e9a92fSRobert Love 128442e9a92fSRobert Love if (lport->state != LPORT_ST_SCR) { 12857414705eSRobert Love FC_LPORT_DBG(lport, "Received a SCR response, but in state " 12867414705eSRobert Love "%s\n", fc_lport_state(lport)); 128776f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 128876f6804eSAbhijeet Joglekar goto err; 128942e9a92fSRobert Love goto out; 129042e9a92fSRobert Love } 129142e9a92fSRobert Love 129276f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 129376f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 129476f6804eSAbhijeet Joglekar goto err; 129576f6804eSAbhijeet Joglekar } 129676f6804eSAbhijeet Joglekar 129742e9a92fSRobert Love op = fc_frame_payload_op(fp); 129842e9a92fSRobert Love if (op == ELS_LS_ACC) 129942e9a92fSRobert Love fc_lport_enter_ready(lport); 130042e9a92fSRobert Love else 130142e9a92fSRobert Love fc_lport_error(lport, fp); 130242e9a92fSRobert Love 130342e9a92fSRobert Love out: 130442e9a92fSRobert Love fc_frame_free(fp); 130542e9a92fSRobert Love err: 130642e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 130742e9a92fSRobert Love } 130842e9a92fSRobert Love 130942e9a92fSRobert Love /** 13103a3b42bfSRobert Love * fc_lport_enter_scr() - Send a SCR (State Change Register) request 13113a3b42bfSRobert Love * @lport: The local port to register for state changes 131242e9a92fSRobert Love * 131342e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 131442e9a92fSRobert Love * this routine. 131542e9a92fSRobert Love */ 131642e9a92fSRobert Love static void fc_lport_enter_scr(struct fc_lport *lport) 131742e9a92fSRobert Love { 131842e9a92fSRobert Love struct fc_frame *fp; 131942e9a92fSRobert Love 13207414705eSRobert Love FC_LPORT_DBG(lport, "Entered SCR state from %s state\n", 13217414705eSRobert Love fc_lport_state(lport)); 132242e9a92fSRobert Love 132342e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_SCR); 132442e9a92fSRobert Love 132542e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr)); 132642e9a92fSRobert Love if (!fp) { 132742e9a92fSRobert Love fc_lport_error(lport, fp); 132842e9a92fSRobert Love return; 132942e9a92fSRobert Love } 133042e9a92fSRobert Love 1331a46f327aSJoe Eykholt if (!lport->tt.elsct_send(lport, FC_FID_FCTRL, fp, ELS_SCR, 1332b94f8951SJoe Eykholt fc_lport_scr_resp, lport, 1333b94f8951SJoe Eykholt 2 * lport->r_a_tov)) 13348f550f93SChris Leech fc_lport_error(lport, NULL); 133542e9a92fSRobert Love } 133642e9a92fSRobert Love 133742e9a92fSRobert Love /** 1338c914f7d1SChris Leech * fc_lport_enter_ns() - register some object with the name server 133942e9a92fSRobert Love * @lport: Fibre Channel local port to register 134042e9a92fSRobert Love * 134142e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 134242e9a92fSRobert Love * this routine. 134342e9a92fSRobert Love */ 1344c914f7d1SChris Leech static void fc_lport_enter_ns(struct fc_lport *lport, enum fc_lport_state state) 134542e9a92fSRobert Love { 134642e9a92fSRobert Love struct fc_frame *fp; 1347c914f7d1SChris Leech enum fc_ns_req cmd; 1348c914f7d1SChris Leech int size = sizeof(struct fc_ct_hdr); 1349c914f7d1SChris Leech size_t len; 135042e9a92fSRobert Love 1351c914f7d1SChris Leech FC_LPORT_DBG(lport, "Entered %s state from %s state\n", 1352c914f7d1SChris Leech fc_lport_state_names[state], 13537414705eSRobert Love fc_lport_state(lport)); 135442e9a92fSRobert Love 1355c914f7d1SChris Leech fc_lport_state_enter(lport, state); 135642e9a92fSRobert Love 1357c914f7d1SChris Leech switch (state) { 1358c914f7d1SChris Leech case LPORT_ST_RNN_ID: 1359c914f7d1SChris Leech cmd = FC_NS_RNN_ID; 1360c914f7d1SChris Leech size += sizeof(struct fc_ns_rn_id); 136142e9a92fSRobert Love break; 1362c914f7d1SChris Leech case LPORT_ST_RSNN_NN: 1363c9866a54SChris Leech len = strnlen(fc_host_symbolic_name(lport->host), 255); 1364c914f7d1SChris Leech /* if there is no symbolic name, skip to RFT_ID */ 1365c914f7d1SChris Leech if (!len) 1366c914f7d1SChris Leech return fc_lport_enter_ns(lport, LPORT_ST_RFT_ID); 1367c914f7d1SChris Leech cmd = FC_NS_RSNN_NN; 1368c914f7d1SChris Leech size += sizeof(struct fc_ns_rsnn) + len; 1369c914f7d1SChris Leech break; 1370c914f7d1SChris Leech case LPORT_ST_RSPN_ID: 13715baa17c3SChris Leech len = strnlen(fc_host_symbolic_name(lport->host), 255); 1372c914f7d1SChris Leech /* if there is no symbolic name, skip to RFT_ID */ 1373c914f7d1SChris Leech if (!len) 1374c914f7d1SChris Leech return fc_lport_enter_ns(lport, LPORT_ST_RFT_ID); 1375c914f7d1SChris Leech cmd = FC_NS_RSPN_ID; 1376c914f7d1SChris Leech size += sizeof(struct fc_ns_rspn) + len; 1377c914f7d1SChris Leech break; 1378c914f7d1SChris Leech case LPORT_ST_RFT_ID: 1379c914f7d1SChris Leech cmd = FC_NS_RFT_ID; 1380c914f7d1SChris Leech size += sizeof(struct fc_ns_rft); 1381c914f7d1SChris Leech break; 1382ab593b18SJoe Eykholt case LPORT_ST_RFF_ID: 1383ab593b18SJoe Eykholt cmd = FC_NS_RFF_ID; 1384ab593b18SJoe Eykholt size += sizeof(struct fc_ns_rff_id); 1385ab593b18SJoe Eykholt break; 1386c914f7d1SChris Leech default: 1387c914f7d1SChris Leech fc_lport_error(lport, NULL); 1388c914f7d1SChris Leech return; 1389c914f7d1SChris Leech } 1390c914f7d1SChris Leech 1391c914f7d1SChris Leech fp = fc_frame_alloc(lport, size); 13925baa17c3SChris Leech if (!fp) { 13935baa17c3SChris Leech fc_lport_error(lport, fp); 13945baa17c3SChris Leech return; 13955baa17c3SChris Leech } 13965baa17c3SChris Leech 1397c914f7d1SChris Leech if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, cmd, 13987cccc157SChris Leech fc_lport_ns_resp, 1399b94f8951SJoe Eykholt lport, 3 * lport->r_a_tov)) 1400c9c7bd7aSChris Leech fc_lport_error(lport, fp); 1401c9c7bd7aSChris Leech } 1402c9c7bd7aSChris Leech 140342e9a92fSRobert Love static struct fc_rport_operations fc_lport_rport_ops = { 140442e9a92fSRobert Love .event_callback = fc_lport_rport_callback, 140542e9a92fSRobert Love }; 140642e9a92fSRobert Love 140742e9a92fSRobert Love /** 14083a3b42bfSRobert Love * fc_rport_enter_dns() - Create a fc_rport for the name server 14093a3b42bfSRobert Love * @lport: The local port requesting a remote port for the name server 141042e9a92fSRobert Love * 141142e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 141242e9a92fSRobert Love * this routine. 141342e9a92fSRobert Love */ 141442e9a92fSRobert Love static void fc_lport_enter_dns(struct fc_lport *lport) 141542e9a92fSRobert Love { 1416ab28f1fdSJoe Eykholt struct fc_rport_priv *rdata; 141742e9a92fSRobert Love 14187414705eSRobert Love FC_LPORT_DBG(lport, "Entered DNS state from %s state\n", 14197414705eSRobert Love fc_lport_state(lport)); 142042e9a92fSRobert Love 142142e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_DNS); 142242e9a92fSRobert Love 142348f00902SJoe Eykholt mutex_lock(&lport->disc.disc_mutex); 14249737e6a7SRobert Love rdata = lport->tt.rport_create(lport, FC_FID_DIR_SERV); 142548f00902SJoe Eykholt mutex_unlock(&lport->disc.disc_mutex); 14269fb9d328SJoe Eykholt if (!rdata) 142742e9a92fSRobert Love goto err; 142842e9a92fSRobert Love 142942e9a92fSRobert Love rdata->ops = &fc_lport_rport_ops; 14309fb9d328SJoe Eykholt lport->tt.rport_login(rdata); 143142e9a92fSRobert Love return; 143242e9a92fSRobert Love 143342e9a92fSRobert Love err: 143442e9a92fSRobert Love fc_lport_error(lport, NULL); 143542e9a92fSRobert Love } 143642e9a92fSRobert Love 143742e9a92fSRobert Love /** 1438d78c317fSNeerav Parikh * fc_lport_enter_ms() - management server commands 1439d78c317fSNeerav Parikh * @lport: Fibre Channel local port to register 1440d78c317fSNeerav Parikh * 1441d78c317fSNeerav Parikh * Locking Note: The lport lock is expected to be held before calling 1442d78c317fSNeerav Parikh * this routine. 1443d78c317fSNeerav Parikh */ 1444d78c317fSNeerav Parikh static void fc_lport_enter_ms(struct fc_lport *lport, enum fc_lport_state state) 1445d78c317fSNeerav Parikh { 1446d78c317fSNeerav Parikh struct fc_frame *fp; 1447d78c317fSNeerav Parikh enum fc_fdmi_req cmd; 1448d78c317fSNeerav Parikh int size = sizeof(struct fc_ct_hdr); 1449d78c317fSNeerav Parikh size_t len; 1450d78c317fSNeerav Parikh int numattrs; 1451d78c317fSNeerav Parikh 1452d78c317fSNeerav Parikh FC_LPORT_DBG(lport, "Entered %s state from %s state\n", 1453d78c317fSNeerav Parikh fc_lport_state_names[state], 1454d78c317fSNeerav Parikh fc_lport_state(lport)); 1455d78c317fSNeerav Parikh 1456d78c317fSNeerav Parikh fc_lport_state_enter(lport, state); 1457d78c317fSNeerav Parikh 1458d78c317fSNeerav Parikh switch (state) { 1459d78c317fSNeerav Parikh case LPORT_ST_RHBA: 1460d78c317fSNeerav Parikh cmd = FC_FDMI_RHBA; 1461d78c317fSNeerav Parikh /* Number of HBA Attributes */ 1462d78c317fSNeerav Parikh numattrs = 10; 1463d78c317fSNeerav Parikh len = sizeof(struct fc_fdmi_rhba); 1464d78c317fSNeerav Parikh len -= sizeof(struct fc_fdmi_attr_entry); 1465d78c317fSNeerav Parikh len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN); 1466d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_NODENAME_LEN; 1467d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_MANUFACTURER_LEN; 1468d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN; 1469d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_MODEL_LEN; 1470d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_MODELDESCR_LEN; 1471d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN; 1472d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN; 1473d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN; 1474d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN; 1475d78c317fSNeerav Parikh len += FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN; 1476d78c317fSNeerav Parikh 1477d78c317fSNeerav Parikh size += len; 1478d78c317fSNeerav Parikh break; 1479d78c317fSNeerav Parikh case LPORT_ST_RPA: 1480d78c317fSNeerav Parikh cmd = FC_FDMI_RPA; 1481d78c317fSNeerav Parikh /* Number of Port Attributes */ 1482d78c317fSNeerav Parikh numattrs = 6; 1483d78c317fSNeerav Parikh len = sizeof(struct fc_fdmi_rpa); 1484d78c317fSNeerav Parikh len -= sizeof(struct fc_fdmi_attr_entry); 1485d78c317fSNeerav Parikh len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN); 1486d78c317fSNeerav Parikh len += FC_FDMI_PORT_ATTR_FC4TYPES_LEN; 1487d78c317fSNeerav Parikh len += FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN; 1488d78c317fSNeerav Parikh len += FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN; 1489d78c317fSNeerav Parikh len += FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN; 1490d78c317fSNeerav Parikh len += FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN; 1491d78c317fSNeerav Parikh len += FC_FDMI_PORT_ATTR_HOSTNAME_LEN; 1492d78c317fSNeerav Parikh 1493d78c317fSNeerav Parikh size += len; 1494d78c317fSNeerav Parikh break; 1495d78c317fSNeerav Parikh case LPORT_ST_DPRT: 1496d78c317fSNeerav Parikh cmd = FC_FDMI_DPRT; 1497d78c317fSNeerav Parikh len = sizeof(struct fc_fdmi_dprt); 1498d78c317fSNeerav Parikh size += len; 1499d78c317fSNeerav Parikh break; 1500d78c317fSNeerav Parikh case LPORT_ST_DHBA: 1501d78c317fSNeerav Parikh cmd = FC_FDMI_DHBA; 1502d78c317fSNeerav Parikh len = sizeof(struct fc_fdmi_dhba); 1503d78c317fSNeerav Parikh size += len; 1504d78c317fSNeerav Parikh break; 1505d78c317fSNeerav Parikh default: 1506d78c317fSNeerav Parikh fc_lport_error(lport, NULL); 1507d78c317fSNeerav Parikh return; 1508d78c317fSNeerav Parikh } 1509d78c317fSNeerav Parikh 1510d78c317fSNeerav Parikh FC_LPORT_DBG(lport, "Cmd=0x%x Len %d size %d\n", 1511d78c317fSNeerav Parikh cmd, (int)len, size); 1512d78c317fSNeerav Parikh fp = fc_frame_alloc(lport, size); 1513d78c317fSNeerav Parikh if (!fp) { 1514d78c317fSNeerav Parikh fc_lport_error(lport, fp); 1515d78c317fSNeerav Parikh return; 1516d78c317fSNeerav Parikh } 1517d78c317fSNeerav Parikh 1518d78c317fSNeerav Parikh if (!lport->tt.elsct_send(lport, FC_FID_MGMT_SERV, fp, cmd, 1519d78c317fSNeerav Parikh fc_lport_ms_resp, 1520d78c317fSNeerav Parikh lport, 3 * lport->r_a_tov)) 1521d78c317fSNeerav Parikh fc_lport_error(lport, fp); 1522d78c317fSNeerav Parikh } 1523d78c317fSNeerav Parikh 1524d78c317fSNeerav Parikh /** 1525d78c317fSNeerav Parikh * fc_rport_enter_fdmi() - Create a fc_rport for the management server 1526d78c317fSNeerav Parikh * @lport: The local port requesting a remote port for the management server 1527d78c317fSNeerav Parikh * 1528d78c317fSNeerav Parikh * Locking Note: The lport lock is expected to be held before calling 1529d78c317fSNeerav Parikh * this routine. 1530d78c317fSNeerav Parikh */ 1531d78c317fSNeerav Parikh static void fc_lport_enter_fdmi(struct fc_lport *lport) 1532d78c317fSNeerav Parikh { 1533d78c317fSNeerav Parikh struct fc_rport_priv *rdata; 1534d78c317fSNeerav Parikh 1535d78c317fSNeerav Parikh FC_LPORT_DBG(lport, "Entered FDMI state from %s state\n", 1536d78c317fSNeerav Parikh fc_lport_state(lport)); 1537d78c317fSNeerav Parikh 1538d78c317fSNeerav Parikh fc_lport_state_enter(lport, LPORT_ST_FDMI); 1539d78c317fSNeerav Parikh 1540d78c317fSNeerav Parikh mutex_lock(&lport->disc.disc_mutex); 1541d78c317fSNeerav Parikh rdata = lport->tt.rport_create(lport, FC_FID_MGMT_SERV); 1542d78c317fSNeerav Parikh mutex_unlock(&lport->disc.disc_mutex); 1543d78c317fSNeerav Parikh if (!rdata) 1544d78c317fSNeerav Parikh goto err; 1545d78c317fSNeerav Parikh 1546d78c317fSNeerav Parikh rdata->ops = &fc_lport_rport_ops; 1547d78c317fSNeerav Parikh lport->tt.rport_login(rdata); 1548d78c317fSNeerav Parikh return; 1549d78c317fSNeerav Parikh 1550d78c317fSNeerav Parikh err: 1551d78c317fSNeerav Parikh fc_lport_error(lport, NULL); 1552d78c317fSNeerav Parikh } 1553d78c317fSNeerav Parikh 1554d78c317fSNeerav Parikh /** 15553a3b42bfSRobert Love * fc_lport_timeout() - Handler for the retry_work timer 15563a3b42bfSRobert Love * @work: The work struct of the local port 155742e9a92fSRobert Love */ 155842e9a92fSRobert Love static void fc_lport_timeout(struct work_struct *work) 155942e9a92fSRobert Love { 156042e9a92fSRobert Love struct fc_lport *lport = 156142e9a92fSRobert Love container_of(work, struct fc_lport, 156242e9a92fSRobert Love retry_work.work); 156342e9a92fSRobert Love 156442e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 156542e9a92fSRobert Love 156642e9a92fSRobert Love switch (lport->state) { 1567b1d9fd55SJoe Eykholt case LPORT_ST_DISABLED: 156842e9a92fSRobert Love break; 156922655ac2SJoe Eykholt case LPORT_ST_READY: 157022655ac2SJoe Eykholt break; 157122655ac2SJoe Eykholt case LPORT_ST_RESET: 157222655ac2SJoe Eykholt break; 157342e9a92fSRobert Love case LPORT_ST_FLOGI: 157442e9a92fSRobert Love fc_lport_enter_flogi(lport); 157542e9a92fSRobert Love break; 157642e9a92fSRobert Love case LPORT_ST_DNS: 157742e9a92fSRobert Love fc_lport_enter_dns(lport); 157842e9a92fSRobert Love break; 1579c9c7bd7aSChris Leech case LPORT_ST_RNN_ID: 15805baa17c3SChris Leech case LPORT_ST_RSNN_NN: 1581c9866a54SChris Leech case LPORT_ST_RSPN_ID: 158242e9a92fSRobert Love case LPORT_ST_RFT_ID: 1583ab593b18SJoe Eykholt case LPORT_ST_RFF_ID: 1584c914f7d1SChris Leech fc_lport_enter_ns(lport, lport->state); 158542e9a92fSRobert Love break; 1586d78c317fSNeerav Parikh case LPORT_ST_FDMI: 1587d78c317fSNeerav Parikh fc_lport_enter_fdmi(lport); 1588d78c317fSNeerav Parikh break; 1589d78c317fSNeerav Parikh case LPORT_ST_RHBA: 1590d78c317fSNeerav Parikh case LPORT_ST_RPA: 1591d78c317fSNeerav Parikh case LPORT_ST_DHBA: 1592d78c317fSNeerav Parikh case LPORT_ST_DPRT: 1593d78c317fSNeerav Parikh fc_lport_enter_ms(lport, lport->state); 1594d78c317fSNeerav Parikh break; 159542e9a92fSRobert Love case LPORT_ST_SCR: 159642e9a92fSRobert Love fc_lport_enter_scr(lport); 159742e9a92fSRobert Love break; 159842e9a92fSRobert Love case LPORT_ST_LOGO: 159942e9a92fSRobert Love fc_lport_enter_logo(lport); 160042e9a92fSRobert Love break; 160142e9a92fSRobert Love } 160242e9a92fSRobert Love 160342e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 160442e9a92fSRobert Love } 160542e9a92fSRobert Love 160642e9a92fSRobert Love /** 160734f42a07SRobert Love * fc_lport_logo_resp() - Handle response to LOGO request 16083a3b42bfSRobert Love * @sp: The sequence that the LOGO was on 16093a3b42bfSRobert Love * @fp: The LOGO frame 16103a3b42bfSRobert Love * @lp_arg: The lport port that received the LOGO request 161142e9a92fSRobert Love * 161242e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 16133a3b42bfSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error() 161442e9a92fSRobert Love * and then unlock the lport. 161542e9a92fSRobert Love */ 161611b56188SChris Leech void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp, 161742e9a92fSRobert Love void *lp_arg) 161842e9a92fSRobert Love { 161942e9a92fSRobert Love struct fc_lport *lport = lp_arg; 162042e9a92fSRobert Love u8 op; 162142e9a92fSRobert Love 1622f657d299SJoe Eykholt FC_LPORT_DBG(lport, "Received a LOGO %s\n", fc_els_resp_type(fp)); 1623f657d299SJoe Eykholt 162442e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 162542e9a92fSRobert Love return; 162642e9a92fSRobert Love 162742e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 162842e9a92fSRobert Love 162942e9a92fSRobert Love if (lport->state != LPORT_ST_LOGO) { 16307414705eSRobert Love FC_LPORT_DBG(lport, "Received a LOGO response, but in state " 16317414705eSRobert Love "%s\n", fc_lport_state(lport)); 163276f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 163376f6804eSAbhijeet Joglekar goto err; 163442e9a92fSRobert Love goto out; 163542e9a92fSRobert Love } 163642e9a92fSRobert Love 163776f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 163876f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 163976f6804eSAbhijeet Joglekar goto err; 164076f6804eSAbhijeet Joglekar } 164176f6804eSAbhijeet Joglekar 164242e9a92fSRobert Love op = fc_frame_payload_op(fp); 164342e9a92fSRobert Love if (op == ELS_LS_ACC) 16441190d925SJoe Eykholt fc_lport_enter_disabled(lport); 164542e9a92fSRobert Love else 164642e9a92fSRobert Love fc_lport_error(lport, fp); 164742e9a92fSRobert Love 164842e9a92fSRobert Love out: 164942e9a92fSRobert Love fc_frame_free(fp); 165042e9a92fSRobert Love err: 165142e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 165242e9a92fSRobert Love } 165311b56188SChris Leech EXPORT_SYMBOL(fc_lport_logo_resp); 165442e9a92fSRobert Love 165542e9a92fSRobert Love /** 165634f42a07SRobert Love * fc_rport_enter_logo() - Logout of the fabric 16573a3b42bfSRobert Love * @lport: The local port to be logged out 165842e9a92fSRobert Love * 165942e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 166042e9a92fSRobert Love * this routine. 166142e9a92fSRobert Love */ 166242e9a92fSRobert Love static void fc_lport_enter_logo(struct fc_lport *lport) 166342e9a92fSRobert Love { 166442e9a92fSRobert Love struct fc_frame *fp; 166542e9a92fSRobert Love struct fc_els_logo *logo; 166642e9a92fSRobert Love 16677414705eSRobert Love FC_LPORT_DBG(lport, "Entered LOGO state from %s state\n", 16687414705eSRobert Love fc_lport_state(lport)); 166942e9a92fSRobert Love 167042e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_LOGO); 16718faecddbSChris Leech fc_vports_linkchange(lport); 167242e9a92fSRobert Love 167342e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(*logo)); 167442e9a92fSRobert Love if (!fp) { 167542e9a92fSRobert Love fc_lport_error(lport, fp); 167642e9a92fSRobert Love return; 167742e9a92fSRobert Love } 167842e9a92fSRobert Love 1679a46f327aSJoe Eykholt if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, ELS_LOGO, 1680b94f8951SJoe Eykholt fc_lport_logo_resp, lport, 1681b94f8951SJoe Eykholt 2 * lport->r_a_tov)) 16828f550f93SChris Leech fc_lport_error(lport, NULL); 168342e9a92fSRobert Love } 168442e9a92fSRobert Love 168542e9a92fSRobert Love /** 168634f42a07SRobert Love * fc_lport_flogi_resp() - Handle response to FLOGI request 16873a3b42bfSRobert Love * @sp: The sequence that the FLOGI was on 16883a3b42bfSRobert Love * @fp: The FLOGI response frame 16893a3b42bfSRobert Love * @lp_arg: The lport port that received the FLOGI response 169042e9a92fSRobert Love * 169142e9a92fSRobert Love * Locking Note: This function will be called without the lport lock 16923a3b42bfSRobert Love * held, but it will lock, call an _enter_* function or fc_lport_error() 169342e9a92fSRobert Love * and then unlock the lport. 169442e9a92fSRobert Love */ 169511b56188SChris Leech void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, 169642e9a92fSRobert Love void *lp_arg) 169742e9a92fSRobert Love { 169842e9a92fSRobert Love struct fc_lport *lport = lp_arg; 1699907c07d4SVasu Dev struct fc_frame_header *fh; 170042e9a92fSRobert Love struct fc_els_flogi *flp; 170142e9a92fSRobert Love u32 did; 170242e9a92fSRobert Love u16 csp_flags; 170342e9a92fSRobert Love unsigned int r_a_tov; 170442e9a92fSRobert Love unsigned int e_d_tov; 170542e9a92fSRobert Love u16 mfs; 170642e9a92fSRobert Love 1707f657d299SJoe Eykholt FC_LPORT_DBG(lport, "Received a FLOGI %s\n", fc_els_resp_type(fp)); 1708f657d299SJoe Eykholt 170942e9a92fSRobert Love if (fp == ERR_PTR(-FC_EX_CLOSED)) 171042e9a92fSRobert Love return; 171142e9a92fSRobert Love 171242e9a92fSRobert Love mutex_lock(&lport->lp_mutex); 171342e9a92fSRobert Love 171442e9a92fSRobert Love if (lport->state != LPORT_ST_FLOGI) { 17157414705eSRobert Love FC_LPORT_DBG(lport, "Received a FLOGI response, but in state " 17167414705eSRobert Love "%s\n", fc_lport_state(lport)); 171776f6804eSAbhijeet Joglekar if (IS_ERR(fp)) 171876f6804eSAbhijeet Joglekar goto err; 171942e9a92fSRobert Love goto out; 172042e9a92fSRobert Love } 172142e9a92fSRobert Love 172276f6804eSAbhijeet Joglekar if (IS_ERR(fp)) { 172376f6804eSAbhijeet Joglekar fc_lport_error(lport, fp); 172476f6804eSAbhijeet Joglekar goto err; 172576f6804eSAbhijeet Joglekar } 172676f6804eSAbhijeet Joglekar 1727907c07d4SVasu Dev fh = fc_frame_header_get(fp); 1728251748a9SJoe Eykholt did = fc_frame_did(fp); 1729907c07d4SVasu Dev if (fh->fh_r_ctl != FC_RCTL_ELS_REP || did == 0 || 1730907c07d4SVasu Dev fc_frame_payload_op(fp) != ELS_LS_ACC) { 1731907c07d4SVasu Dev FC_LPORT_DBG(lport, "FLOGI not accepted or bad response\n"); 1732907c07d4SVasu Dev fc_lport_error(lport, fp); 1733907c07d4SVasu Dev goto err; 1734907c07d4SVasu Dev } 1735907c07d4SVasu Dev 173642e9a92fSRobert Love flp = fc_frame_payload_get(fp, sizeof(*flp)); 1737907c07d4SVasu Dev if (!flp) { 1738907c07d4SVasu Dev FC_LPORT_DBG(lport, "FLOGI bad response\n"); 1739907c07d4SVasu Dev fc_lport_error(lport, fp); 1740907c07d4SVasu Dev goto err; 1741907c07d4SVasu Dev } 1742907c07d4SVasu Dev 174342e9a92fSRobert Love mfs = ntohs(flp->fl_csp.sp_bb_data) & 174442e9a92fSRobert Love FC_SP_BB_DATA_MASK; 174593f90e51SVasu Dev 174693f90e51SVasu Dev if (mfs < FC_SP_MIN_MAX_PAYLOAD || mfs > FC_SP_MAX_MAX_PAYLOAD) { 174773d67aa4SVasu Dev FC_LPORT_DBG(lport, "FLOGI bad mfs:%hu response, " 174873d67aa4SVasu Dev "lport->mfs:%hu\n", mfs, lport->mfs); 174973d67aa4SVasu Dev fc_lport_error(lport, fp); 175073d67aa4SVasu Dev goto err; 175173d67aa4SVasu Dev } 175273d67aa4SVasu Dev 175393f90e51SVasu Dev if (mfs <= lport->mfs) { 175493f90e51SVasu Dev lport->mfs = mfs; 175593f90e51SVasu Dev fc_host_maxframe_size(lport->host) = mfs; 175693f90e51SVasu Dev } 175793f90e51SVasu Dev 175842e9a92fSRobert Love csp_flags = ntohs(flp->fl_csp.sp_features); 175942e9a92fSRobert Love r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov); 176042e9a92fSRobert Love e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov); 176142e9a92fSRobert Love if (csp_flags & FC_SP_FT_EDTR) 176242e9a92fSRobert Love e_d_tov /= 1000000; 1763db36c06cSChris Leech 1764db36c06cSChris Leech lport->npiv_enabled = !!(csp_flags & FC_SP_FT_NPIV_ACC); 1765db36c06cSChris Leech 176642e9a92fSRobert Love if ((csp_flags & FC_SP_FT_FPORT) == 0) { 176742e9a92fSRobert Love if (e_d_tov > lport->e_d_tov) 176842e9a92fSRobert Love lport->e_d_tov = e_d_tov; 176942e9a92fSRobert Love lport->r_a_tov = 2 * e_d_tov; 1770093bb6a2SJoe Eykholt fc_lport_set_port_id(lport, did, fp); 1771e6d8a1b0SJoe Eykholt printk(KERN_INFO "host%d: libfc: " 1772ce8b5df0SChris Leech "Port (%6.6x) entered " 1773e6d8a1b0SJoe Eykholt "point-to-point mode\n", 1774e6d8a1b0SJoe Eykholt lport->host->host_no, did); 1775251748a9SJoe Eykholt fc_lport_ptp_setup(lport, fc_frame_sid(fp), 177642e9a92fSRobert Love get_unaligned_be64( 177742e9a92fSRobert Love &flp->fl_wwpn), 177842e9a92fSRobert Love get_unaligned_be64( 177942e9a92fSRobert Love &flp->fl_wwnn)); 178042e9a92fSRobert Love } else { 178142e9a92fSRobert Love lport->e_d_tov = e_d_tov; 178242e9a92fSRobert Love lport->r_a_tov = r_a_tov; 178342e9a92fSRobert Love fc_host_fabric_name(lport->host) = 178442e9a92fSRobert Love get_unaligned_be64(&flp->fl_wwnn); 1785093bb6a2SJoe Eykholt fc_lport_set_port_id(lport, did, fp); 178642e9a92fSRobert Love fc_lport_enter_dns(lport); 178742e9a92fSRobert Love } 178842e9a92fSRobert Love 178942e9a92fSRobert Love out: 179042e9a92fSRobert Love fc_frame_free(fp); 179142e9a92fSRobert Love err: 179242e9a92fSRobert Love mutex_unlock(&lport->lp_mutex); 179342e9a92fSRobert Love } 179411b56188SChris Leech EXPORT_SYMBOL(fc_lport_flogi_resp); 179542e9a92fSRobert Love 179642e9a92fSRobert Love /** 179734f42a07SRobert Love * fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager 179842e9a92fSRobert Love * @lport: Fibre Channel local port to be logged in to the fabric 179942e9a92fSRobert Love * 180042e9a92fSRobert Love * Locking Note: The lport lock is expected to be held before calling 180142e9a92fSRobert Love * this routine. 180242e9a92fSRobert Love */ 1803c6b21c93SBart Van Assche static void fc_lport_enter_flogi(struct fc_lport *lport) 180442e9a92fSRobert Love { 180542e9a92fSRobert Love struct fc_frame *fp; 180642e9a92fSRobert Love 18077414705eSRobert Love FC_LPORT_DBG(lport, "Entered FLOGI state from %s state\n", 18087414705eSRobert Love fc_lport_state(lport)); 180942e9a92fSRobert Love 181042e9a92fSRobert Love fc_lport_state_enter(lport, LPORT_ST_FLOGI); 181142e9a92fSRobert Love 18123726f358SJoe Eykholt if (lport->point_to_multipoint) { 18133726f358SJoe Eykholt if (lport->port_id) 18143726f358SJoe Eykholt fc_lport_enter_ready(lport); 18153726f358SJoe Eykholt return; 18163726f358SJoe Eykholt } 18173726f358SJoe Eykholt 181842e9a92fSRobert Love fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); 181942e9a92fSRobert Love if (!fp) 182042e9a92fSRobert Love return fc_lport_error(lport, fp); 182142e9a92fSRobert Love 1822db36c06cSChris Leech if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, 1823db36c06cSChris Leech lport->vport ? ELS_FDISC : ELS_FLOGI, 1824b94f8951SJoe Eykholt fc_lport_flogi_resp, lport, 1825b94f8951SJoe Eykholt lport->vport ? 2 * lport->r_a_tov : 1826b94f8951SJoe Eykholt lport->e_d_tov)) 18278f550f93SChris Leech fc_lport_error(lport, NULL); 182842e9a92fSRobert Love } 182942e9a92fSRobert Love 18303a3b42bfSRobert Love /** 18313a3b42bfSRobert Love * fc_lport_config() - Configure a fc_lport 18323a3b42bfSRobert Love * @lport: The local port to be configured 18333a3b42bfSRobert Love */ 183442e9a92fSRobert Love int fc_lport_config(struct fc_lport *lport) 183542e9a92fSRobert Love { 183642e9a92fSRobert Love INIT_DELAYED_WORK(&lport->retry_work, fc_lport_timeout); 183742e9a92fSRobert Love mutex_init(&lport->lp_mutex); 183842e9a92fSRobert Love 1839b1d9fd55SJoe Eykholt fc_lport_state_enter(lport, LPORT_ST_DISABLED); 184042e9a92fSRobert Love 184142e9a92fSRobert Love fc_lport_add_fc4_type(lport, FC_TYPE_FCP); 184242e9a92fSRobert Love fc_lport_add_fc4_type(lport, FC_TYPE_CT); 1843acc1a921SKiran Patil fc_fc4_conf_lport_params(lport, FC_TYPE_FCP); 184442e9a92fSRobert Love 184542e9a92fSRobert Love return 0; 184642e9a92fSRobert Love } 184742e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_config); 184842e9a92fSRobert Love 18493a3b42bfSRobert Love /** 18503a3b42bfSRobert Love * fc_lport_init() - Initialize the lport layer for a local port 18513a3b42bfSRobert Love * @lport: The local port to initialize the exchange layer for 18523a3b42bfSRobert Love */ 185342e9a92fSRobert Love int fc_lport_init(struct fc_lport *lport) 185442e9a92fSRobert Love { 185542e9a92fSRobert Love if (!lport->tt.lport_recv) 185642e9a92fSRobert Love lport->tt.lport_recv = fc_lport_recv_req; 185742e9a92fSRobert Love 185842e9a92fSRobert Love if (!lport->tt.lport_reset) 185942e9a92fSRobert Love lport->tt.lport_reset = fc_lport_reset; 186042e9a92fSRobert Love 186142e9a92fSRobert Love fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; 186242e9a92fSRobert Love fc_host_node_name(lport->host) = lport->wwnn; 186342e9a92fSRobert Love fc_host_port_name(lport->host) = lport->wwpn; 186442e9a92fSRobert Love fc_host_supported_classes(lport->host) = FC_COS_CLASS3; 186542e9a92fSRobert Love memset(fc_host_supported_fc4s(lport->host), 0, 186642e9a92fSRobert Love sizeof(fc_host_supported_fc4s(lport->host))); 186742e9a92fSRobert Love fc_host_supported_fc4s(lport->host)[2] = 1; 186842e9a92fSRobert Love fc_host_supported_fc4s(lport->host)[7] = 1; 186942e9a92fSRobert Love 187042e9a92fSRobert Love /* This value is also unchanging */ 187142e9a92fSRobert Love memset(fc_host_active_fc4s(lport->host), 0, 187242e9a92fSRobert Love sizeof(fc_host_active_fc4s(lport->host))); 187342e9a92fSRobert Love fc_host_active_fc4s(lport->host)[2] = 1; 187442e9a92fSRobert Love fc_host_active_fc4s(lport->host)[7] = 1; 187542e9a92fSRobert Love fc_host_maxframe_size(lport->host) = lport->mfs; 187642e9a92fSRobert Love fc_host_supported_speeds(lport->host) = 0; 187742e9a92fSRobert Love if (lport->link_supported_speeds & FC_PORTSPEED_1GBIT) 187842e9a92fSRobert Love fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_1GBIT; 187942e9a92fSRobert Love if (lport->link_supported_speeds & FC_PORTSPEED_10GBIT) 188042e9a92fSRobert Love fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_10GBIT; 188170d53b04SJoe Eykholt fc_fc4_add_lport(lport); 188242e9a92fSRobert Love 188342e9a92fSRobert Love return 0; 188442e9a92fSRobert Love } 188542e9a92fSRobert Love EXPORT_SYMBOL(fc_lport_init); 1886a51ab396SSteve Ma 1887a51ab396SSteve Ma /** 18883a3b42bfSRobert Love * fc_lport_bsg_resp() - The common response handler for FC Passthrough requests 18893a3b42bfSRobert Love * @sp: The sequence for the FC Passthrough response 18903a3b42bfSRobert Love * @fp: The response frame 18913a3b42bfSRobert Love * @info_arg: The BSG info that the response is for 1892a51ab396SSteve Ma */ 1893a51ab396SSteve Ma static void fc_lport_bsg_resp(struct fc_seq *sp, struct fc_frame *fp, 1894a51ab396SSteve Ma void *info_arg) 1895a51ab396SSteve Ma { 1896a51ab396SSteve Ma struct fc_bsg_info *info = info_arg; 1897a51ab396SSteve Ma struct fc_bsg_job *job = info->job; 1898a51ab396SSteve Ma struct fc_lport *lport = info->lport; 1899a51ab396SSteve Ma struct fc_frame_header *fh; 1900a51ab396SSteve Ma size_t len; 1901a51ab396SSteve Ma void *buf; 1902a51ab396SSteve Ma 1903a51ab396SSteve Ma if (IS_ERR(fp)) { 1904a51ab396SSteve Ma job->reply->result = (PTR_ERR(fp) == -FC_EX_CLOSED) ? 1905a51ab396SSteve Ma -ECONNABORTED : -ETIMEDOUT; 1906a51ab396SSteve Ma job->reply_len = sizeof(uint32_t); 1907a51ab396SSteve Ma job->state_flags |= FC_RQST_STATE_DONE; 1908a51ab396SSteve Ma job->job_done(job); 1909a51ab396SSteve Ma kfree(info); 1910a51ab396SSteve Ma return; 1911a51ab396SSteve Ma } 1912a51ab396SSteve Ma 1913a51ab396SSteve Ma mutex_lock(&lport->lp_mutex); 1914a51ab396SSteve Ma fh = fc_frame_header_get(fp); 1915a51ab396SSteve Ma len = fr_len(fp) - sizeof(*fh); 1916a51ab396SSteve Ma buf = fc_frame_payload_get(fp, 0); 1917a51ab396SSteve Ma 1918a51ab396SSteve Ma if (fr_sof(fp) == FC_SOF_I3 && !ntohs(fh->fh_seq_cnt)) { 1919a51ab396SSteve Ma /* Get the response code from the first frame payload */ 1920a51ab396SSteve Ma unsigned short cmd = (info->rsp_code == FC_FS_ACC) ? 1921a51ab396SSteve Ma ntohs(((struct fc_ct_hdr *)buf)->ct_cmd) : 1922a51ab396SSteve Ma (unsigned short)fc_frame_payload_op(fp); 1923a51ab396SSteve Ma 1924a51ab396SSteve Ma /* Save the reply status of the job */ 1925a51ab396SSteve Ma job->reply->reply_data.ctels_reply.status = 1926a51ab396SSteve Ma (cmd == info->rsp_code) ? 1927a51ab396SSteve Ma FC_CTELS_STATUS_OK : FC_CTELS_STATUS_REJECT; 1928a51ab396SSteve Ma } 1929a51ab396SSteve Ma 1930a51ab396SSteve Ma job->reply->reply_payload_rcv_len += 1931a51ab396SSteve Ma fc_copy_buffer_to_sglist(buf, len, info->sg, &info->nents, 193277dfce07SCong Wang &info->offset, NULL); 1933a51ab396SSteve Ma 1934a51ab396SSteve Ma if (fr_eof(fp) == FC_EOF_T && 1935a51ab396SSteve Ma (ntoh24(fh->fh_f_ctl) & (FC_FC_LAST_SEQ | FC_FC_END_SEQ)) == 1936a51ab396SSteve Ma (FC_FC_LAST_SEQ | FC_FC_END_SEQ)) { 1937a51ab396SSteve Ma if (job->reply->reply_payload_rcv_len > 1938a51ab396SSteve Ma job->reply_payload.payload_len) 1939a51ab396SSteve Ma job->reply->reply_payload_rcv_len = 1940a51ab396SSteve Ma job->reply_payload.payload_len; 1941a51ab396SSteve Ma job->reply->result = 0; 1942a51ab396SSteve Ma job->state_flags |= FC_RQST_STATE_DONE; 1943a51ab396SSteve Ma job->job_done(job); 1944a51ab396SSteve Ma kfree(info); 1945a51ab396SSteve Ma } 1946a51ab396SSteve Ma fc_frame_free(fp); 1947a51ab396SSteve Ma mutex_unlock(&lport->lp_mutex); 1948a51ab396SSteve Ma } 1949a51ab396SSteve Ma 1950a51ab396SSteve Ma /** 19513a3b42bfSRobert Love * fc_lport_els_request() - Send ELS passthrough request 19523a3b42bfSRobert Love * @job: The BSG Passthrough job 1953a51ab396SSteve Ma * @lport: The local port sending the request 19543a3b42bfSRobert Love * @did: The destination port id 1955a51ab396SSteve Ma * 1956a51ab396SSteve Ma * Locking Note: The lport lock is expected to be held before calling 1957a51ab396SSteve Ma * this routine. 1958a51ab396SSteve Ma */ 1959a51ab396SSteve Ma static int fc_lport_els_request(struct fc_bsg_job *job, 1960a51ab396SSteve Ma struct fc_lport *lport, 1961a51ab396SSteve Ma u32 did, u32 tov) 1962a51ab396SSteve Ma { 1963a51ab396SSteve Ma struct fc_bsg_info *info; 1964a51ab396SSteve Ma struct fc_frame *fp; 1965a51ab396SSteve Ma struct fc_frame_header *fh; 1966a51ab396SSteve Ma char *pp; 1967a51ab396SSteve Ma int len; 1968a51ab396SSteve Ma 196970d919fbSYi Zou fp = fc_frame_alloc(lport, job->request_payload.payload_len); 1970a51ab396SSteve Ma if (!fp) 1971a51ab396SSteve Ma return -ENOMEM; 1972a51ab396SSteve Ma 1973a51ab396SSteve Ma len = job->request_payload.payload_len; 1974a51ab396SSteve Ma pp = fc_frame_payload_get(fp, len); 1975a51ab396SSteve Ma 1976a51ab396SSteve Ma sg_copy_to_buffer(job->request_payload.sg_list, 1977a51ab396SSteve Ma job->request_payload.sg_cnt, 1978a51ab396SSteve Ma pp, len); 1979a51ab396SSteve Ma 1980a51ab396SSteve Ma fh = fc_frame_header_get(fp); 1981a51ab396SSteve Ma fh->fh_r_ctl = FC_RCTL_ELS_REQ; 1982a51ab396SSteve Ma hton24(fh->fh_d_id, did); 19837b2787ecSRobert Love hton24(fh->fh_s_id, lport->port_id); 1984a51ab396SSteve Ma fh->fh_type = FC_TYPE_ELS; 198524f089e2SJoe Eykholt hton24(fh->fh_f_ctl, FC_FCTL_REQ); 1986a51ab396SSteve Ma fh->fh_cs_ctl = 0; 1987a51ab396SSteve Ma fh->fh_df_ctl = 0; 1988a51ab396SSteve Ma fh->fh_parm_offset = 0; 1989a51ab396SSteve Ma 1990a51ab396SSteve Ma info = kzalloc(sizeof(struct fc_bsg_info), GFP_KERNEL); 1991a51ab396SSteve Ma if (!info) { 1992a51ab396SSteve Ma fc_frame_free(fp); 1993a51ab396SSteve Ma return -ENOMEM; 1994a51ab396SSteve Ma } 1995a51ab396SSteve Ma 1996a51ab396SSteve Ma info->job = job; 1997a51ab396SSteve Ma info->lport = lport; 1998a51ab396SSteve Ma info->rsp_code = ELS_LS_ACC; 1999a51ab396SSteve Ma info->nents = job->reply_payload.sg_cnt; 2000a51ab396SSteve Ma info->sg = job->reply_payload.sg_list; 2001a51ab396SSteve Ma 2002a51ab396SSteve Ma if (!lport->tt.exch_seq_send(lport, fp, fc_lport_bsg_resp, 200372e0daadSHillf Danton NULL, info, tov)) { 200472e0daadSHillf Danton kfree(info); 2005a51ab396SSteve Ma return -ECOMM; 200672e0daadSHillf Danton } 2007a51ab396SSteve Ma return 0; 2008a51ab396SSteve Ma } 2009a51ab396SSteve Ma 2010a51ab396SSteve Ma /** 20113a3b42bfSRobert Love * fc_lport_ct_request() - Send CT Passthrough request 20123a3b42bfSRobert Love * @job: The BSG Passthrough job 2013a51ab396SSteve Ma * @lport: The local port sending the request 2014a51ab396SSteve Ma * @did: The destination FC-ID 20153a3b42bfSRobert Love * @tov: The timeout period to wait for the response 2016a51ab396SSteve Ma * 2017a51ab396SSteve Ma * Locking Note: The lport lock is expected to be held before calling 2018a51ab396SSteve Ma * this routine. 2019a51ab396SSteve Ma */ 2020a51ab396SSteve Ma static int fc_lport_ct_request(struct fc_bsg_job *job, 2021a51ab396SSteve Ma struct fc_lport *lport, u32 did, u32 tov) 2022a51ab396SSteve Ma { 2023a51ab396SSteve Ma struct fc_bsg_info *info; 2024a51ab396SSteve Ma struct fc_frame *fp; 2025a51ab396SSteve Ma struct fc_frame_header *fh; 2026a51ab396SSteve Ma struct fc_ct_req *ct; 2027a51ab396SSteve Ma size_t len; 2028a51ab396SSteve Ma 2029a51ab396SSteve Ma fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + 2030a51ab396SSteve Ma job->request_payload.payload_len); 2031a51ab396SSteve Ma if (!fp) 2032a51ab396SSteve Ma return -ENOMEM; 2033a51ab396SSteve Ma 2034a51ab396SSteve Ma len = job->request_payload.payload_len; 2035a51ab396SSteve Ma ct = fc_frame_payload_get(fp, len); 2036a51ab396SSteve Ma 2037a51ab396SSteve Ma sg_copy_to_buffer(job->request_payload.sg_list, 2038a51ab396SSteve Ma job->request_payload.sg_cnt, 2039a51ab396SSteve Ma ct, len); 2040a51ab396SSteve Ma 2041a51ab396SSteve Ma fh = fc_frame_header_get(fp); 2042a51ab396SSteve Ma fh->fh_r_ctl = FC_RCTL_DD_UNSOL_CTL; 2043a51ab396SSteve Ma hton24(fh->fh_d_id, did); 20447b2787ecSRobert Love hton24(fh->fh_s_id, lport->port_id); 2045a51ab396SSteve Ma fh->fh_type = FC_TYPE_CT; 204624f089e2SJoe Eykholt hton24(fh->fh_f_ctl, FC_FCTL_REQ); 2047a51ab396SSteve Ma fh->fh_cs_ctl = 0; 2048a51ab396SSteve Ma fh->fh_df_ctl = 0; 2049a51ab396SSteve Ma fh->fh_parm_offset = 0; 2050a51ab396SSteve Ma 2051a51ab396SSteve Ma info = kzalloc(sizeof(struct fc_bsg_info), GFP_KERNEL); 2052a51ab396SSteve Ma if (!info) { 2053a51ab396SSteve Ma fc_frame_free(fp); 2054a51ab396SSteve Ma return -ENOMEM; 2055a51ab396SSteve Ma } 2056a51ab396SSteve Ma 2057a51ab396SSteve Ma info->job = job; 2058a51ab396SSteve Ma info->lport = lport; 2059a51ab396SSteve Ma info->rsp_code = FC_FS_ACC; 2060a51ab396SSteve Ma info->nents = job->reply_payload.sg_cnt; 2061a51ab396SSteve Ma info->sg = job->reply_payload.sg_list; 2062a51ab396SSteve Ma 2063a51ab396SSteve Ma if (!lport->tt.exch_seq_send(lport, fp, fc_lport_bsg_resp, 20642d6dfb00SHillf Danton NULL, info, tov)) { 20652d6dfb00SHillf Danton kfree(info); 2066a51ab396SSteve Ma return -ECOMM; 20672d6dfb00SHillf Danton } 2068a51ab396SSteve Ma return 0; 2069a51ab396SSteve Ma } 2070a51ab396SSteve Ma 2071a51ab396SSteve Ma /** 2072a51ab396SSteve Ma * fc_lport_bsg_request() - The common entry point for sending 20733a3b42bfSRobert Love * FC Passthrough requests 20743a3b42bfSRobert Love * @job: The BSG passthrough job 2075a51ab396SSteve Ma */ 2076a51ab396SSteve Ma int fc_lport_bsg_request(struct fc_bsg_job *job) 2077a51ab396SSteve Ma { 2078a51ab396SSteve Ma struct request *rsp = job->req->next_rq; 2079a51ab396SSteve Ma struct Scsi_Host *shost = job->shost; 2080a51ab396SSteve Ma struct fc_lport *lport = shost_priv(shost); 2081a51ab396SSteve Ma struct fc_rport *rport; 2082a51ab396SSteve Ma struct fc_rport_priv *rdata; 2083a51ab396SSteve Ma int rc = -EINVAL; 2084a51ab396SSteve Ma u32 did; 2085a51ab396SSteve Ma 2086a51ab396SSteve Ma job->reply->reply_payload_rcv_len = 0; 2087b248df30SHugh Daschbach if (rsp) 2088a51ab396SSteve Ma rsp->resid_len = job->reply_payload.payload_len; 2089a51ab396SSteve Ma 2090a51ab396SSteve Ma mutex_lock(&lport->lp_mutex); 2091a51ab396SSteve Ma 2092a51ab396SSteve Ma switch (job->request->msgcode) { 2093a51ab396SSteve Ma case FC_BSG_RPT_ELS: 2094a51ab396SSteve Ma rport = job->rport; 2095a51ab396SSteve Ma if (!rport) 2096a51ab396SSteve Ma break; 2097a51ab396SSteve Ma 2098a51ab396SSteve Ma rdata = rport->dd_data; 2099a51ab396SSteve Ma rc = fc_lport_els_request(job, lport, rport->port_id, 2100a51ab396SSteve Ma rdata->e_d_tov); 2101a51ab396SSteve Ma break; 2102a51ab396SSteve Ma 2103a51ab396SSteve Ma case FC_BSG_RPT_CT: 2104a51ab396SSteve Ma rport = job->rport; 2105a51ab396SSteve Ma if (!rport) 2106a51ab396SSteve Ma break; 2107a51ab396SSteve Ma 2108a51ab396SSteve Ma rdata = rport->dd_data; 2109a51ab396SSteve Ma rc = fc_lport_ct_request(job, lport, rport->port_id, 2110a51ab396SSteve Ma rdata->e_d_tov); 2111a51ab396SSteve Ma break; 2112a51ab396SSteve Ma 2113a51ab396SSteve Ma case FC_BSG_HST_CT: 2114a51ab396SSteve Ma did = ntoh24(job->request->rqst_data.h_ct.port_id); 2115a51ab396SSteve Ma if (did == FC_FID_DIR_SERV) 21163a3b42bfSRobert Love rdata = lport->dns_rdata; 2117a51ab396SSteve Ma else 2118a51ab396SSteve Ma rdata = lport->tt.rport_lookup(lport, did); 2119a51ab396SSteve Ma 2120a51ab396SSteve Ma if (!rdata) 2121a51ab396SSteve Ma break; 2122a51ab396SSteve Ma 2123a51ab396SSteve Ma rc = fc_lport_ct_request(job, lport, did, rdata->e_d_tov); 2124a51ab396SSteve Ma break; 2125a51ab396SSteve Ma 2126a51ab396SSteve Ma case FC_BSG_HST_ELS_NOLOGIN: 2127a51ab396SSteve Ma did = ntoh24(job->request->rqst_data.h_els.port_id); 2128a51ab396SSteve Ma rc = fc_lport_els_request(job, lport, did, lport->e_d_tov); 2129a51ab396SSteve Ma break; 2130a51ab396SSteve Ma } 2131a51ab396SSteve Ma 2132a51ab396SSteve Ma mutex_unlock(&lport->lp_mutex); 2133a51ab396SSteve Ma return rc; 2134a51ab396SSteve Ma } 2135a51ab396SSteve Ma EXPORT_SYMBOL(fc_lport_bsg_request); 2136