13287e96aSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 261d8658bSDupuis, Chad /* 361d8658bSDupuis, Chad * QLogic FCoE Offload Driver 45d1c8b5bSChad Dupuis * Copyright (c) 2016-2018 Cavium Inc. 561d8658bSDupuis, Chad */ 661d8658bSDupuis, Chad #include "qedf.h" 761d8658bSDupuis, Chad 861d8658bSDupuis, Chad /* It's assumed that the lock is held when calling this function. */ 961d8658bSDupuis, Chad static int qedf_initiate_els(struct qedf_rport *fcport, unsigned int op, 1061d8658bSDupuis, Chad void *data, uint32_t data_len, 1161d8658bSDupuis, Chad void (*cb_func)(struct qedf_els_cb_arg *cb_arg), 1261d8658bSDupuis, Chad struct qedf_els_cb_arg *cb_arg, uint32_t timer_msec) 1361d8658bSDupuis, Chad { 14f3690a89SChad Dupuis struct qedf_ctx *qedf; 15f3690a89SChad Dupuis struct fc_lport *lport; 1661d8658bSDupuis, Chad struct qedf_ioreq *els_req; 1761d8658bSDupuis, Chad struct qedf_mp_req *mp_req; 1861d8658bSDupuis, Chad struct fc_frame_header *fc_hdr; 1921dd79e8STomer Tayar struct e4_fcoe_task_context *task; 2061d8658bSDupuis, Chad int rc = 0; 2161d8658bSDupuis, Chad uint32_t did, sid; 2261d8658bSDupuis, Chad uint16_t xid; 23be086e7cSMintz, Yuval struct fcoe_wqe *sqe; 24be086e7cSMintz, Yuval unsigned long flags; 25be086e7cSMintz, Yuval u16 sqe_idx; 2661d8658bSDupuis, Chad 27f3690a89SChad Dupuis if (!fcport) { 28f3690a89SChad Dupuis QEDF_ERR(NULL, "fcport is NULL"); 29f3690a89SChad Dupuis rc = -EINVAL; 30f3690a89SChad Dupuis goto els_err; 31f3690a89SChad Dupuis } 32f3690a89SChad Dupuis 33f3690a89SChad Dupuis qedf = fcport->qedf; 34f3690a89SChad Dupuis lport = qedf->lport; 35f3690a89SChad Dupuis 3661d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Sending ELS\n"); 3761d8658bSDupuis, Chad 3861d8658bSDupuis, Chad rc = fc_remote_port_chkready(fcport->rport); 3961d8658bSDupuis, Chad if (rc) { 4061d8658bSDupuis, Chad QEDF_ERR(&(qedf->dbg_ctx), "els 0x%x: rport not ready\n", op); 4161d8658bSDupuis, Chad rc = -EAGAIN; 4261d8658bSDupuis, Chad goto els_err; 4361d8658bSDupuis, Chad } 4461d8658bSDupuis, Chad if (lport->state != LPORT_ST_READY || !(lport->link_up)) { 4561d8658bSDupuis, Chad QEDF_ERR(&(qedf->dbg_ctx), "els 0x%x: link is not ready\n", 4661d8658bSDupuis, Chad op); 4761d8658bSDupuis, Chad rc = -EAGAIN; 4861d8658bSDupuis, Chad goto els_err; 4961d8658bSDupuis, Chad } 5061d8658bSDupuis, Chad 5157a3548aSChad Dupuis if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 5261d8658bSDupuis, Chad QEDF_ERR(&(qedf->dbg_ctx), "els 0x%x: fcport not ready\n", op); 5361d8658bSDupuis, Chad rc = -EINVAL; 5461d8658bSDupuis, Chad goto els_err; 5561d8658bSDupuis, Chad } 5661d8658bSDupuis, Chad 5761d8658bSDupuis, Chad els_req = qedf_alloc_cmd(fcport, QEDF_ELS); 5861d8658bSDupuis, Chad if (!els_req) { 59f1c43590SChad Dupuis QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_ELS, 60f1c43590SChad Dupuis "Failed to alloc ELS request 0x%x\n", op); 6161d8658bSDupuis, Chad rc = -ENOMEM; 6261d8658bSDupuis, Chad goto els_err; 6361d8658bSDupuis, Chad } 6461d8658bSDupuis, Chad 6561d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "initiate_els els_req = " 6661d8658bSDupuis, Chad "0x%p cb_arg = %p xid = %x\n", els_req, cb_arg, 6761d8658bSDupuis, Chad els_req->xid); 6861d8658bSDupuis, Chad els_req->sc_cmd = NULL; 6961d8658bSDupuis, Chad els_req->cmd_type = QEDF_ELS; 7061d8658bSDupuis, Chad els_req->fcport = fcport; 7161d8658bSDupuis, Chad els_req->cb_func = cb_func; 7261d8658bSDupuis, Chad cb_arg->io_req = els_req; 7361d8658bSDupuis, Chad cb_arg->op = op; 7461d8658bSDupuis, Chad els_req->cb_arg = cb_arg; 7561d8658bSDupuis, Chad els_req->data_xfer_len = data_len; 7661d8658bSDupuis, Chad 7761d8658bSDupuis, Chad /* Record which cpu this request is associated with */ 7861d8658bSDupuis, Chad els_req->cpu = smp_processor_id(); 7961d8658bSDupuis, Chad 8061d8658bSDupuis, Chad mp_req = (struct qedf_mp_req *)&(els_req->mp_req); 8161d8658bSDupuis, Chad rc = qedf_init_mp_req(els_req); 8261d8658bSDupuis, Chad if (rc) { 8361d8658bSDupuis, Chad QEDF_ERR(&(qedf->dbg_ctx), "ELS MP request init failed\n"); 8461d8658bSDupuis, Chad kref_put(&els_req->refcount, qedf_release_cmd); 8561d8658bSDupuis, Chad goto els_err; 8661d8658bSDupuis, Chad } else { 8761d8658bSDupuis, Chad rc = 0; 8861d8658bSDupuis, Chad } 8961d8658bSDupuis, Chad 9061d8658bSDupuis, Chad /* Fill ELS Payload */ 9161d8658bSDupuis, Chad if ((op >= ELS_LS_RJT) && (op <= ELS_AUTH_ELS)) { 9261d8658bSDupuis, Chad memcpy(mp_req->req_buf, data, data_len); 9361d8658bSDupuis, Chad } else { 9461d8658bSDupuis, Chad QEDF_ERR(&(qedf->dbg_ctx), "Invalid ELS op 0x%x\n", op); 9561d8658bSDupuis, Chad els_req->cb_func = NULL; 9661d8658bSDupuis, Chad els_req->cb_arg = NULL; 9761d8658bSDupuis, Chad kref_put(&els_req->refcount, qedf_release_cmd); 9861d8658bSDupuis, Chad rc = -EINVAL; 9961d8658bSDupuis, Chad } 10061d8658bSDupuis, Chad 10161d8658bSDupuis, Chad if (rc) 10261d8658bSDupuis, Chad goto els_err; 10361d8658bSDupuis, Chad 10461d8658bSDupuis, Chad /* Fill FC header */ 10561d8658bSDupuis, Chad fc_hdr = &(mp_req->req_fc_hdr); 10661d8658bSDupuis, Chad 10761d8658bSDupuis, Chad did = fcport->rdata->ids.port_id; 10861d8658bSDupuis, Chad sid = fcport->sid; 10961d8658bSDupuis, Chad 11087ea6bddSGustavo A. R. Silva __fc_fill_fc_hdr(fc_hdr, FC_RCTL_ELS_REQ, did, sid, 11161d8658bSDupuis, Chad FC_TYPE_ELS, FC_FC_FIRST_SEQ | FC_FC_END_SEQ | 11261d8658bSDupuis, Chad FC_FC_SEQ_INIT, 0); 11361d8658bSDupuis, Chad 11461d8658bSDupuis, Chad /* Obtain exchange id */ 11561d8658bSDupuis, Chad xid = els_req->xid; 11661d8658bSDupuis, Chad 117be086e7cSMintz, Yuval spin_lock_irqsave(&fcport->rport_lock, flags); 118be086e7cSMintz, Yuval 119be086e7cSMintz, Yuval sqe_idx = qedf_get_sqe_idx(fcport); 120be086e7cSMintz, Yuval sqe = &fcport->sq[sqe_idx]; 121be086e7cSMintz, Yuval memset(sqe, 0, sizeof(struct fcoe_wqe)); 122be086e7cSMintz, Yuval 12361d8658bSDupuis, Chad /* Initialize task context for this IO request */ 12461d8658bSDupuis, Chad task = qedf_get_task_mem(&qedf->tasks, xid); 125be086e7cSMintz, Yuval qedf_init_mp_task(els_req, task, sqe); 12661d8658bSDupuis, Chad 12761d8658bSDupuis, Chad /* Put timer on original I/O request */ 12861d8658bSDupuis, Chad if (timer_msec) 12961d8658bSDupuis, Chad qedf_cmd_timer_set(qedf, els_req, timer_msec); 13061d8658bSDupuis, Chad 13161d8658bSDupuis, Chad /* Ring doorbell */ 13261d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Ringing doorbell for ELS " 13361d8658bSDupuis, Chad "req\n"); 13461d8658bSDupuis, Chad qedf_ring_doorbell(fcport); 1355d5e5565SShyam Sundar set_bit(QEDF_CMD_OUTSTANDING, &els_req->flags); 1365d5e5565SShyam Sundar 137be086e7cSMintz, Yuval spin_unlock_irqrestore(&fcport->rport_lock, flags); 13861d8658bSDupuis, Chad els_err: 13961d8658bSDupuis, Chad return rc; 14061d8658bSDupuis, Chad } 14161d8658bSDupuis, Chad 14261d8658bSDupuis, Chad void qedf_process_els_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe, 14361d8658bSDupuis, Chad struct qedf_ioreq *els_req) 14461d8658bSDupuis, Chad { 14561d8658bSDupuis, Chad struct fcoe_cqe_midpath_info *mp_info; 14661d8658bSDupuis, Chad 14761d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Entered with xid = 0x%x" 14861d8658bSDupuis, Chad " cmd_type = %d.\n", els_req->xid, els_req->cmd_type); 14961d8658bSDupuis, Chad 1505d5e5565SShyam Sundar clear_bit(QEDF_CMD_OUTSTANDING, &els_req->flags); 1515d5e5565SShyam Sundar 15261d8658bSDupuis, Chad /* Kill the ELS timer */ 15361d8658bSDupuis, Chad cancel_delayed_work(&els_req->timeout_work); 15461d8658bSDupuis, Chad 15561d8658bSDupuis, Chad /* Get ELS response length from CQE */ 15661d8658bSDupuis, Chad mp_info = &cqe->cqe_info.midpath_info; 15761d8658bSDupuis, Chad els_req->mp_req.resp_len = mp_info->data_placement_size; 15861d8658bSDupuis, Chad 15961d8658bSDupuis, Chad /* Parse ELS response */ 16061d8658bSDupuis, Chad if ((els_req->cb_func) && (els_req->cb_arg)) { 16161d8658bSDupuis, Chad els_req->cb_func(els_req->cb_arg); 16261d8658bSDupuis, Chad els_req->cb_arg = NULL; 16361d8658bSDupuis, Chad } 16461d8658bSDupuis, Chad 16561d8658bSDupuis, Chad kref_put(&els_req->refcount, qedf_release_cmd); 16661d8658bSDupuis, Chad } 16761d8658bSDupuis, Chad 16861d8658bSDupuis, Chad static void qedf_rrq_compl(struct qedf_els_cb_arg *cb_arg) 16961d8658bSDupuis, Chad { 17061d8658bSDupuis, Chad struct qedf_ioreq *orig_io_req; 17161d8658bSDupuis, Chad struct qedf_ioreq *rrq_req; 17261d8658bSDupuis, Chad struct qedf_ctx *qedf; 17361d8658bSDupuis, Chad int refcount; 17461d8658bSDupuis, Chad 17561d8658bSDupuis, Chad rrq_req = cb_arg->io_req; 17661d8658bSDupuis, Chad qedf = rrq_req->fcport->qedf; 17761d8658bSDupuis, Chad 17861d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Entered.\n"); 17961d8658bSDupuis, Chad 18061d8658bSDupuis, Chad orig_io_req = cb_arg->aborted_io_req; 18161d8658bSDupuis, Chad 182e82e6ff7SSaurav Kashyap if (!orig_io_req) { 183e82e6ff7SSaurav Kashyap QEDF_ERR(&qedf->dbg_ctx, 184e82e6ff7SSaurav Kashyap "Original io_req is NULL, rrq_req = %p.\n", rrq_req); 18561d8658bSDupuis, Chad goto out_free; 186e82e6ff7SSaurav Kashyap } 18761d8658bSDupuis, Chad 18861d8658bSDupuis, Chad if (rrq_req->event != QEDF_IOREQ_EV_ELS_TMO && 18961d8658bSDupuis, Chad rrq_req->event != QEDF_IOREQ_EV_ELS_ERR_DETECT) 19061d8658bSDupuis, Chad cancel_delayed_work_sync(&orig_io_req->timeout_work); 19161d8658bSDupuis, Chad 1921afca6b5SDupuis, Chad refcount = kref_read(&orig_io_req->refcount); 19361d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "rrq_compl: orig io = %p," 19461d8658bSDupuis, Chad " orig xid = 0x%x, rrq_xid = 0x%x, refcount=%d\n", 19561d8658bSDupuis, Chad orig_io_req, orig_io_req->xid, rrq_req->xid, refcount); 19661d8658bSDupuis, Chad 19769ef2c69SSaurav Kashyap /* 19869ef2c69SSaurav Kashyap * This should return the aborted io_req to the command pool. Note that 19969ef2c69SSaurav Kashyap * we need to check the refcound in case the original request was 20069ef2c69SSaurav Kashyap * flushed but we get a completion on this xid. 20169ef2c69SSaurav Kashyap */ 20269ef2c69SSaurav Kashyap if (orig_io_req && refcount > 0) 20361d8658bSDupuis, Chad kref_put(&orig_io_req->refcount, qedf_release_cmd); 20461d8658bSDupuis, Chad 20561d8658bSDupuis, Chad out_free: 206adf48842SChad Dupuis /* 207adf48842SChad Dupuis * Release a reference to the rrq request if we timed out as the 208adf48842SChad Dupuis * rrq completion handler is called directly from the timeout handler 209adf48842SChad Dupuis * and not from els_compl where the reference would have normally been 210adf48842SChad Dupuis * released. 211adf48842SChad Dupuis */ 212adf48842SChad Dupuis if (rrq_req->event == QEDF_IOREQ_EV_ELS_TMO) 213adf48842SChad Dupuis kref_put(&rrq_req->refcount, qedf_release_cmd); 21461d8658bSDupuis, Chad kfree(cb_arg); 21561d8658bSDupuis, Chad } 21661d8658bSDupuis, Chad 21761d8658bSDupuis, Chad /* Assumes kref is already held by caller */ 21861d8658bSDupuis, Chad int qedf_send_rrq(struct qedf_ioreq *aborted_io_req) 21961d8658bSDupuis, Chad { 22061d8658bSDupuis, Chad 22161d8658bSDupuis, Chad struct fc_els_rrq rrq; 22261d8658bSDupuis, Chad struct qedf_rport *fcport; 22361d8658bSDupuis, Chad struct fc_lport *lport; 22461d8658bSDupuis, Chad struct qedf_els_cb_arg *cb_arg = NULL; 22561d8658bSDupuis, Chad struct qedf_ctx *qedf; 22661d8658bSDupuis, Chad uint32_t sid; 22761d8658bSDupuis, Chad uint32_t r_a_tov; 22861d8658bSDupuis, Chad int rc; 22969ef2c69SSaurav Kashyap int refcount; 23061d8658bSDupuis, Chad 23161d8658bSDupuis, Chad if (!aborted_io_req) { 23261d8658bSDupuis, Chad QEDF_ERR(NULL, "abort_io_req is NULL.\n"); 23361d8658bSDupuis, Chad return -EINVAL; 23461d8658bSDupuis, Chad } 23561d8658bSDupuis, Chad 23661d8658bSDupuis, Chad fcport = aborted_io_req->fcport; 23761d8658bSDupuis, Chad 23869ef2c69SSaurav Kashyap if (!fcport) { 23969ef2c69SSaurav Kashyap refcount = kref_read(&aborted_io_req->refcount); 24069ef2c69SSaurav Kashyap QEDF_ERR(NULL, 24169ef2c69SSaurav Kashyap "RRQ work was queued prior to a flush xid=0x%x, refcount=%d.\n", 24269ef2c69SSaurav Kashyap aborted_io_req->xid, refcount); 24369ef2c69SSaurav Kashyap kref_put(&aborted_io_req->refcount, qedf_release_cmd); 24469ef2c69SSaurav Kashyap return -EINVAL; 24569ef2c69SSaurav Kashyap } 24669ef2c69SSaurav Kashyap 24761d8658bSDupuis, Chad /* Check that fcport is still offloaded */ 24857a3548aSChad Dupuis if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 24961d8658bSDupuis, Chad QEDF_ERR(NULL, "fcport is no longer offloaded.\n"); 25061d8658bSDupuis, Chad return -EINVAL; 25161d8658bSDupuis, Chad } 25261d8658bSDupuis, Chad 25361d8658bSDupuis, Chad if (!fcport->qedf) { 25461d8658bSDupuis, Chad QEDF_ERR(NULL, "fcport->qedf is NULL.\n"); 25561d8658bSDupuis, Chad return -EINVAL; 25661d8658bSDupuis, Chad } 25761d8658bSDupuis, Chad 25861d8658bSDupuis, Chad qedf = fcport->qedf; 25969ef2c69SSaurav Kashyap 26069ef2c69SSaurav Kashyap /* 26169ef2c69SSaurav Kashyap * Sanity check that we can send a RRQ to make sure that refcount isn't 26269ef2c69SSaurav Kashyap * 0 26369ef2c69SSaurav Kashyap */ 26469ef2c69SSaurav Kashyap refcount = kref_read(&aborted_io_req->refcount); 26569ef2c69SSaurav Kashyap if (refcount != 1) { 26669ef2c69SSaurav Kashyap QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_ELS, 26769ef2c69SSaurav Kashyap "refcount for xid=%x io_req=%p refcount=%d is not 1.\n", 26869ef2c69SSaurav Kashyap aborted_io_req->xid, aborted_io_req, refcount); 26969ef2c69SSaurav Kashyap return -EINVAL; 27069ef2c69SSaurav Kashyap } 27169ef2c69SSaurav Kashyap 27261d8658bSDupuis, Chad lport = qedf->lport; 27361d8658bSDupuis, Chad sid = fcport->sid; 27461d8658bSDupuis, Chad r_a_tov = lport->r_a_tov; 27561d8658bSDupuis, Chad 27661d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Sending RRQ orig " 27761d8658bSDupuis, Chad "io = %p, orig_xid = 0x%x\n", aborted_io_req, 27861d8658bSDupuis, Chad aborted_io_req->xid); 27961d8658bSDupuis, Chad memset(&rrq, 0, sizeof(rrq)); 28061d8658bSDupuis, Chad 28161d8658bSDupuis, Chad cb_arg = kzalloc(sizeof(struct qedf_els_cb_arg), GFP_NOIO); 28261d8658bSDupuis, Chad if (!cb_arg) { 28361d8658bSDupuis, Chad QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate cb_arg for " 28461d8658bSDupuis, Chad "RRQ\n"); 28561d8658bSDupuis, Chad rc = -ENOMEM; 28661d8658bSDupuis, Chad goto rrq_err; 28761d8658bSDupuis, Chad } 28861d8658bSDupuis, Chad 28961d8658bSDupuis, Chad cb_arg->aborted_io_req = aborted_io_req; 29061d8658bSDupuis, Chad 29161d8658bSDupuis, Chad rrq.rrq_cmd = ELS_RRQ; 29261d8658bSDupuis, Chad hton24(rrq.rrq_s_id, sid); 29361d8658bSDupuis, Chad rrq.rrq_ox_id = htons(aborted_io_req->xid); 29461d8658bSDupuis, Chad rrq.rrq_rx_id = 29561d8658bSDupuis, Chad htons(aborted_io_req->task->tstorm_st_context.read_write.rx_id); 29661d8658bSDupuis, Chad 29761d8658bSDupuis, Chad rc = qedf_initiate_els(fcport, ELS_RRQ, &rrq, sizeof(rrq), 29861d8658bSDupuis, Chad qedf_rrq_compl, cb_arg, r_a_tov); 29961d8658bSDupuis, Chad 30061d8658bSDupuis, Chad rrq_err: 30161d8658bSDupuis, Chad if (rc) { 30261d8658bSDupuis, Chad QEDF_ERR(&(qedf->dbg_ctx), "RRQ failed - release orig io " 30361d8658bSDupuis, Chad "req 0x%x\n", aborted_io_req->xid); 30461d8658bSDupuis, Chad kfree(cb_arg); 30561d8658bSDupuis, Chad kref_put(&aborted_io_req->refcount, qedf_release_cmd); 30661d8658bSDupuis, Chad } 30761d8658bSDupuis, Chad return rc; 30861d8658bSDupuis, Chad } 30961d8658bSDupuis, Chad 31061d8658bSDupuis, Chad static void qedf_process_l2_frame_compl(struct qedf_rport *fcport, 31161d8658bSDupuis, Chad struct fc_frame *fp, 31261d8658bSDupuis, Chad u16 l2_oxid) 31361d8658bSDupuis, Chad { 31461d8658bSDupuis, Chad struct fc_lport *lport = fcport->qedf->lport; 31561d8658bSDupuis, Chad struct fc_frame_header *fh; 31661d8658bSDupuis, Chad u32 crc; 31761d8658bSDupuis, Chad 31861d8658bSDupuis, Chad fh = (struct fc_frame_header *)fc_frame_header_get(fp); 31961d8658bSDupuis, Chad 32061d8658bSDupuis, Chad /* Set the OXID we return to what libfc used */ 32161d8658bSDupuis, Chad if (l2_oxid != FC_XID_UNKNOWN) 32261d8658bSDupuis, Chad fh->fh_ox_id = htons(l2_oxid); 32361d8658bSDupuis, Chad 32461d8658bSDupuis, Chad /* Setup header fields */ 32561d8658bSDupuis, Chad fh->fh_r_ctl = FC_RCTL_ELS_REP; 32661d8658bSDupuis, Chad fh->fh_type = FC_TYPE_ELS; 32761d8658bSDupuis, Chad /* Last sequence, end sequence */ 32861d8658bSDupuis, Chad fh->fh_f_ctl[0] = 0x98; 32961d8658bSDupuis, Chad hton24(fh->fh_d_id, lport->port_id); 33061d8658bSDupuis, Chad hton24(fh->fh_s_id, fcport->rdata->ids.port_id); 33161d8658bSDupuis, Chad fh->fh_rx_id = 0xffff; 33261d8658bSDupuis, Chad 33361d8658bSDupuis, Chad /* Set frame attributes */ 33461d8658bSDupuis, Chad crc = fcoe_fc_crc(fp); 33561d8658bSDupuis, Chad fc_frame_init(fp); 33661d8658bSDupuis, Chad fr_dev(fp) = lport; 33761d8658bSDupuis, Chad fr_sof(fp) = FC_SOF_I3; 33861d8658bSDupuis, Chad fr_eof(fp) = FC_EOF_T; 33961d8658bSDupuis, Chad fr_crc(fp) = cpu_to_le32(~crc); 34061d8658bSDupuis, Chad 34161d8658bSDupuis, Chad /* Send completed request to libfc */ 34261d8658bSDupuis, Chad fc_exch_recv(lport, fp); 34361d8658bSDupuis, Chad } 34461d8658bSDupuis, Chad 34561d8658bSDupuis, Chad /* 34661d8658bSDupuis, Chad * In instances where an ELS command times out we may need to restart the 34761d8658bSDupuis, Chad * rport by logging out and then logging back in. 34861d8658bSDupuis, Chad */ 34961d8658bSDupuis, Chad void qedf_restart_rport(struct qedf_rport *fcport) 35061d8658bSDupuis, Chad { 35161d8658bSDupuis, Chad struct fc_lport *lport; 35261d8658bSDupuis, Chad struct fc_rport_priv *rdata; 35361d8658bSDupuis, Chad u32 port_id; 35478a8ab3cSHannes Reinecke unsigned long flags; 35561d8658bSDupuis, Chad 356e82e6ff7SSaurav Kashyap if (!fcport) { 357e82e6ff7SSaurav Kashyap QEDF_ERR(NULL, "fcport is NULL.\n"); 35861d8658bSDupuis, Chad return; 359e82e6ff7SSaurav Kashyap } 36061d8658bSDupuis, Chad 36178a8ab3cSHannes Reinecke spin_lock_irqsave(&fcport->rport_lock, flags); 36244c7c859SChad Dupuis if (test_bit(QEDF_RPORT_IN_RESET, &fcport->flags) || 36344c7c859SChad Dupuis !test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) || 36444c7c859SChad Dupuis test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) { 36544c7c859SChad Dupuis QEDF_ERR(&(fcport->qedf->dbg_ctx), "fcport %p already in reset or not offloaded.\n", 36644c7c859SChad Dupuis fcport); 36778a8ab3cSHannes Reinecke spin_unlock_irqrestore(&fcport->rport_lock, flags); 36844c7c859SChad Dupuis return; 36944c7c859SChad Dupuis } 37044c7c859SChad Dupuis 37144c7c859SChad Dupuis /* Set that we are now in reset */ 37244c7c859SChad Dupuis set_bit(QEDF_RPORT_IN_RESET, &fcport->flags); 37378a8ab3cSHannes Reinecke spin_unlock_irqrestore(&fcport->rport_lock, flags); 37444c7c859SChad Dupuis 37561d8658bSDupuis, Chad rdata = fcport->rdata; 37656efc304SHannes Reinecke if (rdata && !kref_get_unless_zero(&rdata->kref)) { 37756efc304SHannes Reinecke fcport->rdata = NULL; 37856efc304SHannes Reinecke rdata = NULL; 37956efc304SHannes Reinecke } 38056efc304SHannes Reinecke 38156efc304SHannes Reinecke if (rdata && rdata->rp_state == RPORT_ST_READY) { 38261d8658bSDupuis, Chad lport = fcport->qedf->lport; 38361d8658bSDupuis, Chad port_id = rdata->ids.port_id; 38461d8658bSDupuis, Chad QEDF_ERR(&(fcport->qedf->dbg_ctx), 38561d8658bSDupuis, Chad "LOGO port_id=%x.\n", port_id); 38661d8658bSDupuis, Chad fc_rport_logoff(rdata); 38756efc304SHannes Reinecke kref_put(&rdata->kref, fc_rport_destroy); 3886d1368e8SHannes Reinecke mutex_lock(&lport->disc.disc_mutex); 38961d8658bSDupuis, Chad /* Recreate the rport and log back in */ 39061d8658bSDupuis, Chad rdata = fc_rport_create(lport, port_id); 3916d1368e8SHannes Reinecke mutex_unlock(&lport->disc.disc_mutex); 392fbbef0daSDaniel Wagner if (rdata) 39361d8658bSDupuis, Chad fc_rport_login(rdata); 3946d1368e8SHannes Reinecke fcport->rdata = rdata; 39561d8658bSDupuis, Chad } 39644c7c859SChad Dupuis clear_bit(QEDF_RPORT_IN_RESET, &fcport->flags); 39761d8658bSDupuis, Chad } 39861d8658bSDupuis, Chad 39961d8658bSDupuis, Chad static void qedf_l2_els_compl(struct qedf_els_cb_arg *cb_arg) 40061d8658bSDupuis, Chad { 40161d8658bSDupuis, Chad struct qedf_ioreq *els_req; 40261d8658bSDupuis, Chad struct qedf_rport *fcport; 40361d8658bSDupuis, Chad struct qedf_mp_req *mp_req; 40461d8658bSDupuis, Chad struct fc_frame *fp; 40561d8658bSDupuis, Chad struct fc_frame_header *fh, *mp_fc_hdr; 40661d8658bSDupuis, Chad void *resp_buf, *fc_payload; 40761d8658bSDupuis, Chad u32 resp_len; 40861d8658bSDupuis, Chad u16 l2_oxid; 40961d8658bSDupuis, Chad 41061d8658bSDupuis, Chad l2_oxid = cb_arg->l2_oxid; 41161d8658bSDupuis, Chad els_req = cb_arg->io_req; 41261d8658bSDupuis, Chad 41361d8658bSDupuis, Chad if (!els_req) { 41461d8658bSDupuis, Chad QEDF_ERR(NULL, "els_req is NULL.\n"); 41561d8658bSDupuis, Chad goto free_arg; 41661d8658bSDupuis, Chad } 41761d8658bSDupuis, Chad 41861d8658bSDupuis, Chad /* 41961d8658bSDupuis, Chad * If we are flushing the command just free the cb_arg as none of the 42061d8658bSDupuis, Chad * response data will be valid. 42161d8658bSDupuis, Chad */ 422e82e6ff7SSaurav Kashyap if (els_req->event == QEDF_IOREQ_EV_ELS_FLUSH) { 423e82e6ff7SSaurav Kashyap QEDF_ERR(NULL, "els_req xid=0x%x event is flush.\n", 424e82e6ff7SSaurav Kashyap els_req->xid); 42561d8658bSDupuis, Chad goto free_arg; 426e82e6ff7SSaurav Kashyap } 42761d8658bSDupuis, Chad 42861d8658bSDupuis, Chad fcport = els_req->fcport; 42961d8658bSDupuis, Chad mp_req = &(els_req->mp_req); 43061d8658bSDupuis, Chad mp_fc_hdr = &(mp_req->resp_fc_hdr); 43161d8658bSDupuis, Chad resp_len = mp_req->resp_len; 43261d8658bSDupuis, Chad resp_buf = mp_req->resp_buf; 43361d8658bSDupuis, Chad 43461d8658bSDupuis, Chad /* 43561d8658bSDupuis, Chad * If a middle path ELS command times out, don't try to return 43661d8658bSDupuis, Chad * the command but rather do any internal cleanup and then libfc 43761d8658bSDupuis, Chad * timeout the command and clean up its internal resources. 43861d8658bSDupuis, Chad */ 43961d8658bSDupuis, Chad if (els_req->event == QEDF_IOREQ_EV_ELS_TMO) { 44061d8658bSDupuis, Chad /* 44161d8658bSDupuis, Chad * If ADISC times out, libfc will timeout the exchange and then 44261d8658bSDupuis, Chad * try to send a PLOGI which will timeout since the session is 44361d8658bSDupuis, Chad * still offloaded. Force libfc to logout the session which 44461d8658bSDupuis, Chad * will offload the connection and allow the PLOGI response to 44561d8658bSDupuis, Chad * flow over the LL2 path. 44661d8658bSDupuis, Chad */ 44761d8658bSDupuis, Chad if (cb_arg->op == ELS_ADISC) 44861d8658bSDupuis, Chad qedf_restart_rport(fcport); 44961d8658bSDupuis, Chad return; 45061d8658bSDupuis, Chad } 45161d8658bSDupuis, Chad 45261d8658bSDupuis, Chad if (sizeof(struct fc_frame_header) + resp_len > QEDF_PAGE_SIZE) { 45361d8658bSDupuis, Chad QEDF_ERR(&(fcport->qedf->dbg_ctx), "resp_len is " 45461d8658bSDupuis, Chad "beyond page size.\n"); 45561d8658bSDupuis, Chad goto free_arg; 45661d8658bSDupuis, Chad } 45761d8658bSDupuis, Chad 45861d8658bSDupuis, Chad fp = fc_frame_alloc(fcport->qedf->lport, resp_len); 45961d8658bSDupuis, Chad if (!fp) { 46061d8658bSDupuis, Chad QEDF_ERR(&(fcport->qedf->dbg_ctx), 46161d8658bSDupuis, Chad "fc_frame_alloc failure.\n"); 46261d8658bSDupuis, Chad return; 46361d8658bSDupuis, Chad } 46461d8658bSDupuis, Chad 46561d8658bSDupuis, Chad /* Copy frame header from firmware into fp */ 46661d8658bSDupuis, Chad fh = (struct fc_frame_header *)fc_frame_header_get(fp); 46761d8658bSDupuis, Chad memcpy(fh, mp_fc_hdr, sizeof(struct fc_frame_header)); 46861d8658bSDupuis, Chad 46961d8658bSDupuis, Chad /* Copy payload from firmware into fp */ 47061d8658bSDupuis, Chad fc_payload = fc_frame_payload_get(fp, resp_len); 47161d8658bSDupuis, Chad memcpy(fc_payload, resp_buf, resp_len); 47261d8658bSDupuis, Chad 47361d8658bSDupuis, Chad QEDF_INFO(&(fcport->qedf->dbg_ctx), QEDF_LOG_ELS, 47461d8658bSDupuis, Chad "Completing OX_ID 0x%x back to libfc.\n", l2_oxid); 47561d8658bSDupuis, Chad qedf_process_l2_frame_compl(fcport, fp, l2_oxid); 47661d8658bSDupuis, Chad 47761d8658bSDupuis, Chad free_arg: 47861d8658bSDupuis, Chad kfree(cb_arg); 47961d8658bSDupuis, Chad } 48061d8658bSDupuis, Chad 48161d8658bSDupuis, Chad int qedf_send_adisc(struct qedf_rport *fcport, struct fc_frame *fp) 48261d8658bSDupuis, Chad { 48361d8658bSDupuis, Chad struct fc_els_adisc *adisc; 48461d8658bSDupuis, Chad struct fc_frame_header *fh; 48561d8658bSDupuis, Chad struct fc_lport *lport = fcport->qedf->lport; 48661d8658bSDupuis, Chad struct qedf_els_cb_arg *cb_arg = NULL; 48761d8658bSDupuis, Chad struct qedf_ctx *qedf; 48861d8658bSDupuis, Chad uint32_t r_a_tov = lport->r_a_tov; 48961d8658bSDupuis, Chad int rc; 49061d8658bSDupuis, Chad 49161d8658bSDupuis, Chad qedf = fcport->qedf; 49261d8658bSDupuis, Chad fh = fc_frame_header_get(fp); 49361d8658bSDupuis, Chad 49461d8658bSDupuis, Chad cb_arg = kzalloc(sizeof(struct qedf_els_cb_arg), GFP_NOIO); 49561d8658bSDupuis, Chad if (!cb_arg) { 49661d8658bSDupuis, Chad QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate cb_arg for " 49761d8658bSDupuis, Chad "ADISC\n"); 49861d8658bSDupuis, Chad rc = -ENOMEM; 49961d8658bSDupuis, Chad goto adisc_err; 50061d8658bSDupuis, Chad } 50161d8658bSDupuis, Chad cb_arg->l2_oxid = ntohs(fh->fh_ox_id); 50261d8658bSDupuis, Chad 50361d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 50461d8658bSDupuis, Chad "Sending ADISC ox_id=0x%x.\n", cb_arg->l2_oxid); 50561d8658bSDupuis, Chad 50661d8658bSDupuis, Chad adisc = fc_frame_payload_get(fp, sizeof(*adisc)); 50761d8658bSDupuis, Chad 50861d8658bSDupuis, Chad rc = qedf_initiate_els(fcport, ELS_ADISC, adisc, sizeof(*adisc), 50961d8658bSDupuis, Chad qedf_l2_els_compl, cb_arg, r_a_tov); 51061d8658bSDupuis, Chad 51161d8658bSDupuis, Chad adisc_err: 51261d8658bSDupuis, Chad if (rc) { 51361d8658bSDupuis, Chad QEDF_ERR(&(qedf->dbg_ctx), "ADISC failed.\n"); 51461d8658bSDupuis, Chad kfree(cb_arg); 51561d8658bSDupuis, Chad } 51661d8658bSDupuis, Chad return rc; 51761d8658bSDupuis, Chad } 51861d8658bSDupuis, Chad 51961d8658bSDupuis, Chad static void qedf_srr_compl(struct qedf_els_cb_arg *cb_arg) 52061d8658bSDupuis, Chad { 52161d8658bSDupuis, Chad struct qedf_ioreq *orig_io_req; 52261d8658bSDupuis, Chad struct qedf_ioreq *srr_req; 52361d8658bSDupuis, Chad struct qedf_mp_req *mp_req; 52461d8658bSDupuis, Chad struct fc_frame_header *mp_fc_hdr, *fh; 52561d8658bSDupuis, Chad struct fc_frame *fp; 52661d8658bSDupuis, Chad void *resp_buf, *fc_payload; 52761d8658bSDupuis, Chad u32 resp_len; 52861d8658bSDupuis, Chad struct fc_lport *lport; 52961d8658bSDupuis, Chad struct qedf_ctx *qedf; 53061d8658bSDupuis, Chad int refcount; 53161d8658bSDupuis, Chad u8 opcode; 53261d8658bSDupuis, Chad 53361d8658bSDupuis, Chad srr_req = cb_arg->io_req; 53461d8658bSDupuis, Chad qedf = srr_req->fcport->qedf; 53561d8658bSDupuis, Chad lport = qedf->lport; 53661d8658bSDupuis, Chad 53761d8658bSDupuis, Chad orig_io_req = cb_arg->aborted_io_req; 53861d8658bSDupuis, Chad 539e82e6ff7SSaurav Kashyap if (!orig_io_req) { 540e82e6ff7SSaurav Kashyap QEDF_ERR(NULL, "orig_io_req is NULL.\n"); 54161d8658bSDupuis, Chad goto out_free; 542e82e6ff7SSaurav Kashyap } 54361d8658bSDupuis, Chad 54461d8658bSDupuis, Chad clear_bit(QEDF_CMD_SRR_SENT, &orig_io_req->flags); 54561d8658bSDupuis, Chad 54661d8658bSDupuis, Chad if (srr_req->event != QEDF_IOREQ_EV_ELS_TMO && 54761d8658bSDupuis, Chad srr_req->event != QEDF_IOREQ_EV_ELS_ERR_DETECT) 54861d8658bSDupuis, Chad cancel_delayed_work_sync(&orig_io_req->timeout_work); 54961d8658bSDupuis, Chad 5501afca6b5SDupuis, Chad refcount = kref_read(&orig_io_req->refcount); 55161d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Entered: orig_io=%p," 55261d8658bSDupuis, Chad " orig_io_xid=0x%x, rec_xid=0x%x, refcount=%d\n", 55361d8658bSDupuis, Chad orig_io_req, orig_io_req->xid, srr_req->xid, refcount); 55461d8658bSDupuis, Chad 55561d8658bSDupuis, Chad /* If a SRR times out, simply free resources */ 556e82e6ff7SSaurav Kashyap if (srr_req->event == QEDF_IOREQ_EV_ELS_TMO) { 557e82e6ff7SSaurav Kashyap QEDF_ERR(&qedf->dbg_ctx, 558e82e6ff7SSaurav Kashyap "ELS timeout rec_xid=0x%x.\n", srr_req->xid); 55947c4ccd3SChristophe JAILLET goto out_put; 560e82e6ff7SSaurav Kashyap } 56161d8658bSDupuis, Chad 56261d8658bSDupuis, Chad /* Normalize response data into struct fc_frame */ 56361d8658bSDupuis, Chad mp_req = &(srr_req->mp_req); 56461d8658bSDupuis, Chad mp_fc_hdr = &(mp_req->resp_fc_hdr); 56561d8658bSDupuis, Chad resp_len = mp_req->resp_len; 56661d8658bSDupuis, Chad resp_buf = mp_req->resp_buf; 56761d8658bSDupuis, Chad 56861d8658bSDupuis, Chad fp = fc_frame_alloc(lport, resp_len); 56961d8658bSDupuis, Chad if (!fp) { 57061d8658bSDupuis, Chad QEDF_ERR(&(qedf->dbg_ctx), 57161d8658bSDupuis, Chad "fc_frame_alloc failure.\n"); 57247c4ccd3SChristophe JAILLET goto out_put; 57361d8658bSDupuis, Chad } 57461d8658bSDupuis, Chad 57561d8658bSDupuis, Chad /* Copy frame header from firmware into fp */ 57661d8658bSDupuis, Chad fh = (struct fc_frame_header *)fc_frame_header_get(fp); 57761d8658bSDupuis, Chad memcpy(fh, mp_fc_hdr, sizeof(struct fc_frame_header)); 57861d8658bSDupuis, Chad 57961d8658bSDupuis, Chad /* Copy payload from firmware into fp */ 58061d8658bSDupuis, Chad fc_payload = fc_frame_payload_get(fp, resp_len); 58161d8658bSDupuis, Chad memcpy(fc_payload, resp_buf, resp_len); 58261d8658bSDupuis, Chad 58361d8658bSDupuis, Chad opcode = fc_frame_payload_op(fp); 58461d8658bSDupuis, Chad switch (opcode) { 58561d8658bSDupuis, Chad case ELS_LS_ACC: 58661d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 58761d8658bSDupuis, Chad "SRR success.\n"); 58861d8658bSDupuis, Chad break; 58961d8658bSDupuis, Chad case ELS_LS_RJT: 59061d8658bSDupuis, Chad QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_ELS, 59161d8658bSDupuis, Chad "SRR rejected.\n"); 59261d8658bSDupuis, Chad qedf_initiate_abts(orig_io_req, true); 59361d8658bSDupuis, Chad break; 59461d8658bSDupuis, Chad } 59561d8658bSDupuis, Chad 59661d8658bSDupuis, Chad fc_frame_free(fp); 59747c4ccd3SChristophe JAILLET out_put: 59861d8658bSDupuis, Chad /* Put reference for original command since SRR completed */ 59961d8658bSDupuis, Chad kref_put(&orig_io_req->refcount, qedf_release_cmd); 60047c4ccd3SChristophe JAILLET out_free: 60161d8658bSDupuis, Chad kfree(cb_arg); 60261d8658bSDupuis, Chad } 60361d8658bSDupuis, Chad 60461d8658bSDupuis, Chad static int qedf_send_srr(struct qedf_ioreq *orig_io_req, u32 offset, u8 r_ctl) 60561d8658bSDupuis, Chad { 60661d8658bSDupuis, Chad struct fcp_srr srr; 60761d8658bSDupuis, Chad struct qedf_ctx *qedf; 60861d8658bSDupuis, Chad struct qedf_rport *fcport; 60961d8658bSDupuis, Chad struct fc_lport *lport; 61061d8658bSDupuis, Chad struct qedf_els_cb_arg *cb_arg = NULL; 611cc23c661SYueHaibing u32 r_a_tov; 61261d8658bSDupuis, Chad int rc; 61361d8658bSDupuis, Chad 61461d8658bSDupuis, Chad if (!orig_io_req) { 61561d8658bSDupuis, Chad QEDF_ERR(NULL, "orig_io_req is NULL.\n"); 61661d8658bSDupuis, Chad return -EINVAL; 61761d8658bSDupuis, Chad } 61861d8658bSDupuis, Chad 61961d8658bSDupuis, Chad fcport = orig_io_req->fcport; 62061d8658bSDupuis, Chad 62161d8658bSDupuis, Chad /* Check that fcport is still offloaded */ 62257a3548aSChad Dupuis if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 62361d8658bSDupuis, Chad QEDF_ERR(NULL, "fcport is no longer offloaded.\n"); 62461d8658bSDupuis, Chad return -EINVAL; 62561d8658bSDupuis, Chad } 62661d8658bSDupuis, Chad 62761d8658bSDupuis, Chad if (!fcport->qedf) { 62861d8658bSDupuis, Chad QEDF_ERR(NULL, "fcport->qedf is NULL.\n"); 62961d8658bSDupuis, Chad return -EINVAL; 63061d8658bSDupuis, Chad } 63161d8658bSDupuis, Chad 63261d8658bSDupuis, Chad /* Take reference until SRR command completion */ 63361d8658bSDupuis, Chad kref_get(&orig_io_req->refcount); 63461d8658bSDupuis, Chad 63561d8658bSDupuis, Chad qedf = fcport->qedf; 63661d8658bSDupuis, Chad lport = qedf->lport; 63761d8658bSDupuis, Chad r_a_tov = lport->r_a_tov; 63861d8658bSDupuis, Chad 63961d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Sending SRR orig_io=%p, " 64061d8658bSDupuis, Chad "orig_xid=0x%x\n", orig_io_req, orig_io_req->xid); 64161d8658bSDupuis, Chad memset(&srr, 0, sizeof(srr)); 64261d8658bSDupuis, Chad 64361d8658bSDupuis, Chad cb_arg = kzalloc(sizeof(struct qedf_els_cb_arg), GFP_NOIO); 64461d8658bSDupuis, Chad if (!cb_arg) { 64561d8658bSDupuis, Chad QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate cb_arg for " 64661d8658bSDupuis, Chad "SRR\n"); 64761d8658bSDupuis, Chad rc = -ENOMEM; 64861d8658bSDupuis, Chad goto srr_err; 64961d8658bSDupuis, Chad } 65061d8658bSDupuis, Chad 65161d8658bSDupuis, Chad cb_arg->aborted_io_req = orig_io_req; 65261d8658bSDupuis, Chad 65361d8658bSDupuis, Chad srr.srr_op = ELS_SRR; 65461d8658bSDupuis, Chad srr.srr_ox_id = htons(orig_io_req->xid); 65561d8658bSDupuis, Chad srr.srr_rx_id = htons(orig_io_req->rx_id); 65661d8658bSDupuis, Chad srr.srr_rel_off = htonl(offset); 65761d8658bSDupuis, Chad srr.srr_r_ctl = r_ctl; 65861d8658bSDupuis, Chad 65961d8658bSDupuis, Chad rc = qedf_initiate_els(fcport, ELS_SRR, &srr, sizeof(srr), 66061d8658bSDupuis, Chad qedf_srr_compl, cb_arg, r_a_tov); 66161d8658bSDupuis, Chad 66261d8658bSDupuis, Chad srr_err: 66361d8658bSDupuis, Chad if (rc) { 66461d8658bSDupuis, Chad QEDF_ERR(&(qedf->dbg_ctx), "SRR failed - release orig_io_req" 66561d8658bSDupuis, Chad "=0x%x\n", orig_io_req->xid); 66661d8658bSDupuis, Chad kfree(cb_arg); 66761d8658bSDupuis, Chad /* If we fail to queue SRR, send ABTS to orig_io */ 66861d8658bSDupuis, Chad qedf_initiate_abts(orig_io_req, true); 66961d8658bSDupuis, Chad kref_put(&orig_io_req->refcount, qedf_release_cmd); 67061d8658bSDupuis, Chad } else 67161d8658bSDupuis, Chad /* Tell other threads that SRR is in progress */ 67261d8658bSDupuis, Chad set_bit(QEDF_CMD_SRR_SENT, &orig_io_req->flags); 67361d8658bSDupuis, Chad 67461d8658bSDupuis, Chad return rc; 67561d8658bSDupuis, Chad } 67661d8658bSDupuis, Chad 67761d8658bSDupuis, Chad static void qedf_initiate_seq_cleanup(struct qedf_ioreq *orig_io_req, 67861d8658bSDupuis, Chad u32 offset, u8 r_ctl) 67961d8658bSDupuis, Chad { 68061d8658bSDupuis, Chad struct qedf_rport *fcport; 68161d8658bSDupuis, Chad unsigned long flags; 68261d8658bSDupuis, Chad struct qedf_els_cb_arg *cb_arg; 683be086e7cSMintz, Yuval struct fcoe_wqe *sqe; 684be086e7cSMintz, Yuval u16 sqe_idx; 68561d8658bSDupuis, Chad 68661d8658bSDupuis, Chad fcport = orig_io_req->fcport; 68761d8658bSDupuis, Chad 68861d8658bSDupuis, Chad QEDF_INFO(&(fcport->qedf->dbg_ctx), QEDF_LOG_ELS, 68961d8658bSDupuis, Chad "Doing sequence cleanup for xid=0x%x offset=%u.\n", 69061d8658bSDupuis, Chad orig_io_req->xid, offset); 69161d8658bSDupuis, Chad 69261d8658bSDupuis, Chad cb_arg = kzalloc(sizeof(struct qedf_els_cb_arg), GFP_NOIO); 69361d8658bSDupuis, Chad if (!cb_arg) { 69461d8658bSDupuis, Chad QEDF_ERR(&(fcport->qedf->dbg_ctx), "Unable to allocate cb_arg " 69561d8658bSDupuis, Chad "for sequence cleanup\n"); 69661d8658bSDupuis, Chad return; 69761d8658bSDupuis, Chad } 69861d8658bSDupuis, Chad 69961d8658bSDupuis, Chad /* Get reference for cleanup request */ 70061d8658bSDupuis, Chad kref_get(&orig_io_req->refcount); 70161d8658bSDupuis, Chad 70261d8658bSDupuis, Chad orig_io_req->cmd_type = QEDF_SEQ_CLEANUP; 70361d8658bSDupuis, Chad cb_arg->offset = offset; 70461d8658bSDupuis, Chad cb_arg->r_ctl = r_ctl; 70561d8658bSDupuis, Chad orig_io_req->cb_arg = cb_arg; 70661d8658bSDupuis, Chad 70761d8658bSDupuis, Chad qedf_cmd_timer_set(fcport->qedf, orig_io_req, 70861d8658bSDupuis, Chad QEDF_CLEANUP_TIMEOUT * HZ); 70961d8658bSDupuis, Chad 71061d8658bSDupuis, Chad spin_lock_irqsave(&fcport->rport_lock, flags); 71161d8658bSDupuis, Chad 712be086e7cSMintz, Yuval sqe_idx = qedf_get_sqe_idx(fcport); 713be086e7cSMintz, Yuval sqe = &fcport->sq[sqe_idx]; 714be086e7cSMintz, Yuval memset(sqe, 0, sizeof(struct fcoe_wqe)); 715be086e7cSMintz, Yuval orig_io_req->task_params->sqe = sqe; 716be086e7cSMintz, Yuval 717be086e7cSMintz, Yuval init_initiator_sequence_recovery_fcoe_task(orig_io_req->task_params, 718be086e7cSMintz, Yuval offset); 71961d8658bSDupuis, Chad qedf_ring_doorbell(fcport); 72061d8658bSDupuis, Chad 72161d8658bSDupuis, Chad spin_unlock_irqrestore(&fcport->rport_lock, flags); 72261d8658bSDupuis, Chad } 72361d8658bSDupuis, Chad 72461d8658bSDupuis, Chad void qedf_process_seq_cleanup_compl(struct qedf_ctx *qedf, 72561d8658bSDupuis, Chad struct fcoe_cqe *cqe, struct qedf_ioreq *io_req) 72661d8658bSDupuis, Chad { 72761d8658bSDupuis, Chad int rc; 72861d8658bSDupuis, Chad struct qedf_els_cb_arg *cb_arg; 72961d8658bSDupuis, Chad 73061d8658bSDupuis, Chad cb_arg = io_req->cb_arg; 73161d8658bSDupuis, Chad 73261d8658bSDupuis, Chad /* If we timed out just free resources */ 733e82e6ff7SSaurav Kashyap if (io_req->event == QEDF_IOREQ_EV_ELS_TMO || !cqe) { 734e82e6ff7SSaurav Kashyap QEDF_ERR(&qedf->dbg_ctx, 735e82e6ff7SSaurav Kashyap "cqe is NULL or timeout event (0x%x)", io_req->event); 73661d8658bSDupuis, Chad goto free; 737e82e6ff7SSaurav Kashyap } 73861d8658bSDupuis, Chad 73961d8658bSDupuis, Chad /* Kill the timer we put on the request */ 74061d8658bSDupuis, Chad cancel_delayed_work_sync(&io_req->timeout_work); 74161d8658bSDupuis, Chad 74261d8658bSDupuis, Chad rc = qedf_send_srr(io_req, cb_arg->offset, cb_arg->r_ctl); 74361d8658bSDupuis, Chad if (rc) 74461d8658bSDupuis, Chad QEDF_ERR(&(qedf->dbg_ctx), "Unable to send SRR, I/O will " 74561d8658bSDupuis, Chad "abort, xid=0x%x.\n", io_req->xid); 74661d8658bSDupuis, Chad free: 74761d8658bSDupuis, Chad kfree(cb_arg); 74861d8658bSDupuis, Chad kref_put(&io_req->refcount, qedf_release_cmd); 74961d8658bSDupuis, Chad } 75061d8658bSDupuis, Chad 75161d8658bSDupuis, Chad static bool qedf_requeue_io_req(struct qedf_ioreq *orig_io_req) 75261d8658bSDupuis, Chad { 75361d8658bSDupuis, Chad struct qedf_rport *fcport; 75461d8658bSDupuis, Chad struct qedf_ioreq *new_io_req; 75561d8658bSDupuis, Chad unsigned long flags; 75661d8658bSDupuis, Chad bool rc = false; 75761d8658bSDupuis, Chad 75861d8658bSDupuis, Chad fcport = orig_io_req->fcport; 75961d8658bSDupuis, Chad if (!fcport) { 76061d8658bSDupuis, Chad QEDF_ERR(NULL, "fcport is NULL.\n"); 76161d8658bSDupuis, Chad goto out; 76261d8658bSDupuis, Chad } 76361d8658bSDupuis, Chad 76461d8658bSDupuis, Chad if (!orig_io_req->sc_cmd) { 76561d8658bSDupuis, Chad QEDF_ERR(&(fcport->qedf->dbg_ctx), "sc_cmd is NULL for " 76661d8658bSDupuis, Chad "xid=0x%x.\n", orig_io_req->xid); 76761d8658bSDupuis, Chad goto out; 76861d8658bSDupuis, Chad } 76961d8658bSDupuis, Chad 77061d8658bSDupuis, Chad new_io_req = qedf_alloc_cmd(fcport, QEDF_SCSI_CMD); 77161d8658bSDupuis, Chad if (!new_io_req) { 77261d8658bSDupuis, Chad QEDF_ERR(&(fcport->qedf->dbg_ctx), "Could not allocate new " 77361d8658bSDupuis, Chad "io_req.\n"); 77461d8658bSDupuis, Chad goto out; 77561d8658bSDupuis, Chad } 77661d8658bSDupuis, Chad 77761d8658bSDupuis, Chad new_io_req->sc_cmd = orig_io_req->sc_cmd; 77861d8658bSDupuis, Chad 77961d8658bSDupuis, Chad /* 78061d8658bSDupuis, Chad * This keeps the sc_cmd struct from being returned to the tape 78161d8658bSDupuis, Chad * driver and being requeued twice. We do need to put a reference 78261d8658bSDupuis, Chad * for the original I/O request since we will not do a SCSI completion 78361d8658bSDupuis, Chad * for it. 78461d8658bSDupuis, Chad */ 78561d8658bSDupuis, Chad orig_io_req->sc_cmd = NULL; 78661d8658bSDupuis, Chad kref_put(&orig_io_req->refcount, qedf_release_cmd); 78761d8658bSDupuis, Chad 78861d8658bSDupuis, Chad spin_lock_irqsave(&fcport->rport_lock, flags); 78961d8658bSDupuis, Chad 79061d8658bSDupuis, Chad /* kref for new command released in qedf_post_io_req on error */ 79161d8658bSDupuis, Chad if (qedf_post_io_req(fcport, new_io_req)) { 79261d8658bSDupuis, Chad QEDF_ERR(&(fcport->qedf->dbg_ctx), "Unable to post io_req\n"); 79361d8658bSDupuis, Chad /* Return SQE to pool */ 79461d8658bSDupuis, Chad atomic_inc(&fcport->free_sqes); 79561d8658bSDupuis, Chad } else { 79661d8658bSDupuis, Chad QEDF_INFO(&(fcport->qedf->dbg_ctx), QEDF_LOG_ELS, 79761d8658bSDupuis, Chad "Reissued SCSI command from orig_xid=0x%x on " 79861d8658bSDupuis, Chad "new_xid=0x%x.\n", orig_io_req->xid, new_io_req->xid); 79961d8658bSDupuis, Chad /* 80061d8658bSDupuis, Chad * Abort the original I/O but do not return SCSI command as 80161d8658bSDupuis, Chad * it has been reissued on another OX_ID. 80261d8658bSDupuis, Chad */ 80361d8658bSDupuis, Chad spin_unlock_irqrestore(&fcport->rport_lock, flags); 80461d8658bSDupuis, Chad qedf_initiate_abts(orig_io_req, false); 80561d8658bSDupuis, Chad goto out; 80661d8658bSDupuis, Chad } 80761d8658bSDupuis, Chad 80861d8658bSDupuis, Chad spin_unlock_irqrestore(&fcport->rport_lock, flags); 80961d8658bSDupuis, Chad out: 81061d8658bSDupuis, Chad return rc; 81161d8658bSDupuis, Chad } 81261d8658bSDupuis, Chad 81361d8658bSDupuis, Chad 81461d8658bSDupuis, Chad static void qedf_rec_compl(struct qedf_els_cb_arg *cb_arg) 81561d8658bSDupuis, Chad { 81661d8658bSDupuis, Chad struct qedf_ioreq *orig_io_req; 81761d8658bSDupuis, Chad struct qedf_ioreq *rec_req; 81861d8658bSDupuis, Chad struct qedf_mp_req *mp_req; 81961d8658bSDupuis, Chad struct fc_frame_header *mp_fc_hdr, *fh; 82061d8658bSDupuis, Chad struct fc_frame *fp; 82161d8658bSDupuis, Chad void *resp_buf, *fc_payload; 82261d8658bSDupuis, Chad u32 resp_len; 82361d8658bSDupuis, Chad struct fc_lport *lport; 82461d8658bSDupuis, Chad struct qedf_ctx *qedf; 82561d8658bSDupuis, Chad int refcount; 82661d8658bSDupuis, Chad enum fc_rctl r_ctl; 82761d8658bSDupuis, Chad struct fc_els_ls_rjt *rjt; 82861d8658bSDupuis, Chad struct fc_els_rec_acc *acc; 82961d8658bSDupuis, Chad u8 opcode; 83061d8658bSDupuis, Chad u32 offset, e_stat; 83161d8658bSDupuis, Chad struct scsi_cmnd *sc_cmd; 83261d8658bSDupuis, Chad bool srr_needed = false; 83361d8658bSDupuis, Chad 83461d8658bSDupuis, Chad rec_req = cb_arg->io_req; 83561d8658bSDupuis, Chad qedf = rec_req->fcport->qedf; 83661d8658bSDupuis, Chad lport = qedf->lport; 83761d8658bSDupuis, Chad 83861d8658bSDupuis, Chad orig_io_req = cb_arg->aborted_io_req; 83961d8658bSDupuis, Chad 840e82e6ff7SSaurav Kashyap if (!orig_io_req) { 841e82e6ff7SSaurav Kashyap QEDF_ERR(NULL, "orig_io_req is NULL.\n"); 84261d8658bSDupuis, Chad goto out_free; 843e82e6ff7SSaurav Kashyap } 84461d8658bSDupuis, Chad 84561d8658bSDupuis, Chad if (rec_req->event != QEDF_IOREQ_EV_ELS_TMO && 84661d8658bSDupuis, Chad rec_req->event != QEDF_IOREQ_EV_ELS_ERR_DETECT) 84761d8658bSDupuis, Chad cancel_delayed_work_sync(&orig_io_req->timeout_work); 84861d8658bSDupuis, Chad 8491afca6b5SDupuis, Chad refcount = kref_read(&orig_io_req->refcount); 85061d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Entered: orig_io=%p," 85161d8658bSDupuis, Chad " orig_io_xid=0x%x, rec_xid=0x%x, refcount=%d\n", 85261d8658bSDupuis, Chad orig_io_req, orig_io_req->xid, rec_req->xid, refcount); 85361d8658bSDupuis, Chad 85461d8658bSDupuis, Chad /* If a REC times out, free resources */ 855e82e6ff7SSaurav Kashyap if (rec_req->event == QEDF_IOREQ_EV_ELS_TMO) { 856e82e6ff7SSaurav Kashyap QEDF_ERR(&qedf->dbg_ctx, 857e82e6ff7SSaurav Kashyap "Got TMO event, orig_io_req %p orig_io_xid=0x%x.\n", 858e82e6ff7SSaurav Kashyap orig_io_req, orig_io_req->xid); 85947c4ccd3SChristophe JAILLET goto out_put; 860e82e6ff7SSaurav Kashyap } 86161d8658bSDupuis, Chad 86261d8658bSDupuis, Chad /* Normalize response data into struct fc_frame */ 86361d8658bSDupuis, Chad mp_req = &(rec_req->mp_req); 86461d8658bSDupuis, Chad mp_fc_hdr = &(mp_req->resp_fc_hdr); 86561d8658bSDupuis, Chad resp_len = mp_req->resp_len; 86661d8658bSDupuis, Chad acc = resp_buf = mp_req->resp_buf; 86761d8658bSDupuis, Chad 86861d8658bSDupuis, Chad fp = fc_frame_alloc(lport, resp_len); 86961d8658bSDupuis, Chad if (!fp) { 87061d8658bSDupuis, Chad QEDF_ERR(&(qedf->dbg_ctx), 87161d8658bSDupuis, Chad "fc_frame_alloc failure.\n"); 87247c4ccd3SChristophe JAILLET goto out_put; 87361d8658bSDupuis, Chad } 87461d8658bSDupuis, Chad 87561d8658bSDupuis, Chad /* Copy frame header from firmware into fp */ 87661d8658bSDupuis, Chad fh = (struct fc_frame_header *)fc_frame_header_get(fp); 87761d8658bSDupuis, Chad memcpy(fh, mp_fc_hdr, sizeof(struct fc_frame_header)); 87861d8658bSDupuis, Chad 87961d8658bSDupuis, Chad /* Copy payload from firmware into fp */ 88061d8658bSDupuis, Chad fc_payload = fc_frame_payload_get(fp, resp_len); 88161d8658bSDupuis, Chad memcpy(fc_payload, resp_buf, resp_len); 88261d8658bSDupuis, Chad 88361d8658bSDupuis, Chad opcode = fc_frame_payload_op(fp); 88461d8658bSDupuis, Chad if (opcode == ELS_LS_RJT) { 88561d8658bSDupuis, Chad rjt = fc_frame_payload_get(fp, sizeof(*rjt)); 8867fb8ff08SSaurav Kashyap if (!rjt) { 8877fb8ff08SSaurav Kashyap QEDF_ERR(&qedf->dbg_ctx, "payload get failed"); 8887fb8ff08SSaurav Kashyap goto out_free_frame; 8897fb8ff08SSaurav Kashyap } 8907fb8ff08SSaurav Kashyap 89161d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 89261d8658bSDupuis, Chad "Received LS_RJT for REC: er_reason=0x%x, " 89361d8658bSDupuis, Chad "er_explan=0x%x.\n", rjt->er_reason, rjt->er_explan); 89461d8658bSDupuis, Chad /* 89561d8658bSDupuis, Chad * The following response(s) mean that we need to reissue the 89661d8658bSDupuis, Chad * request on another exchange. We need to do this without 89761d8658bSDupuis, Chad * informing the upper layers lest it cause an application 89861d8658bSDupuis, Chad * error. 89961d8658bSDupuis, Chad */ 90061d8658bSDupuis, Chad if ((rjt->er_reason == ELS_RJT_LOGIC || 90161d8658bSDupuis, Chad rjt->er_reason == ELS_RJT_UNAB) && 90261d8658bSDupuis, Chad rjt->er_explan == ELS_EXPL_OXID_RXID) { 90361d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 90461d8658bSDupuis, Chad "Handle CMD LOST case.\n"); 90561d8658bSDupuis, Chad qedf_requeue_io_req(orig_io_req); 90661d8658bSDupuis, Chad } 90761d8658bSDupuis, Chad } else if (opcode == ELS_LS_ACC) { 90861d8658bSDupuis, Chad offset = ntohl(acc->reca_fc4value); 90961d8658bSDupuis, Chad e_stat = ntohl(acc->reca_e_stat); 91061d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 91161d8658bSDupuis, Chad "Received LS_ACC for REC: offset=0x%x, e_stat=0x%x.\n", 91261d8658bSDupuis, Chad offset, e_stat); 91361d8658bSDupuis, Chad if (e_stat & ESB_ST_SEQ_INIT) { 91461d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 91561d8658bSDupuis, Chad "Target has the seq init\n"); 91661d8658bSDupuis, Chad goto out_free_frame; 91761d8658bSDupuis, Chad } 91861d8658bSDupuis, Chad sc_cmd = orig_io_req->sc_cmd; 91961d8658bSDupuis, Chad if (!sc_cmd) { 92061d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 92161d8658bSDupuis, Chad "sc_cmd is NULL for xid=0x%x.\n", 92261d8658bSDupuis, Chad orig_io_req->xid); 92361d8658bSDupuis, Chad goto out_free_frame; 92461d8658bSDupuis, Chad } 92561d8658bSDupuis, Chad /* SCSI write case */ 92661d8658bSDupuis, Chad if (sc_cmd->sc_data_direction == DMA_TO_DEVICE) { 92761d8658bSDupuis, Chad if (offset == orig_io_req->data_xfer_len) { 92861d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 92961d8658bSDupuis, Chad "WRITE - response lost.\n"); 93061d8658bSDupuis, Chad r_ctl = FC_RCTL_DD_CMD_STATUS; 93161d8658bSDupuis, Chad srr_needed = true; 93261d8658bSDupuis, Chad offset = 0; 93361d8658bSDupuis, Chad } else { 93461d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 93561d8658bSDupuis, Chad "WRITE - XFER_RDY/DATA lost.\n"); 93661d8658bSDupuis, Chad r_ctl = FC_RCTL_DD_DATA_DESC; 93761d8658bSDupuis, Chad /* Use data from warning CQE instead of REC */ 93861d8658bSDupuis, Chad offset = orig_io_req->tx_buf_off; 93961d8658bSDupuis, Chad } 94061d8658bSDupuis, Chad /* SCSI read case */ 94161d8658bSDupuis, Chad } else { 94261d8658bSDupuis, Chad if (orig_io_req->rx_buf_off == 94361d8658bSDupuis, Chad orig_io_req->data_xfer_len) { 94461d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 94561d8658bSDupuis, Chad "READ - response lost.\n"); 94661d8658bSDupuis, Chad srr_needed = true; 94761d8658bSDupuis, Chad r_ctl = FC_RCTL_DD_CMD_STATUS; 94861d8658bSDupuis, Chad offset = 0; 94961d8658bSDupuis, Chad } else { 95061d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, 95161d8658bSDupuis, Chad "READ - DATA lost.\n"); 95261d8658bSDupuis, Chad /* 95361d8658bSDupuis, Chad * For read case we always set the offset to 0 95461d8658bSDupuis, Chad * for sequence recovery task. 95561d8658bSDupuis, Chad */ 95661d8658bSDupuis, Chad offset = 0; 95761d8658bSDupuis, Chad r_ctl = FC_RCTL_DD_SOL_DATA; 95861d8658bSDupuis, Chad } 95961d8658bSDupuis, Chad } 96061d8658bSDupuis, Chad 96161d8658bSDupuis, Chad if (srr_needed) 96261d8658bSDupuis, Chad qedf_send_srr(orig_io_req, offset, r_ctl); 96361d8658bSDupuis, Chad else 96461d8658bSDupuis, Chad qedf_initiate_seq_cleanup(orig_io_req, offset, r_ctl); 96561d8658bSDupuis, Chad } 96661d8658bSDupuis, Chad 96761d8658bSDupuis, Chad out_free_frame: 96861d8658bSDupuis, Chad fc_frame_free(fp); 96947c4ccd3SChristophe JAILLET out_put: 97061d8658bSDupuis, Chad /* Put reference for original command since REC completed */ 97161d8658bSDupuis, Chad kref_put(&orig_io_req->refcount, qedf_release_cmd); 97247c4ccd3SChristophe JAILLET out_free: 97361d8658bSDupuis, Chad kfree(cb_arg); 97461d8658bSDupuis, Chad } 97561d8658bSDupuis, Chad 97661d8658bSDupuis, Chad /* Assumes kref is already held by caller */ 97761d8658bSDupuis, Chad int qedf_send_rec(struct qedf_ioreq *orig_io_req) 97861d8658bSDupuis, Chad { 97961d8658bSDupuis, Chad 98061d8658bSDupuis, Chad struct fc_els_rec rec; 98161d8658bSDupuis, Chad struct qedf_rport *fcport; 98261d8658bSDupuis, Chad struct fc_lport *lport; 98361d8658bSDupuis, Chad struct qedf_els_cb_arg *cb_arg = NULL; 98461d8658bSDupuis, Chad struct qedf_ctx *qedf; 98561d8658bSDupuis, Chad uint32_t sid; 98661d8658bSDupuis, Chad uint32_t r_a_tov; 98761d8658bSDupuis, Chad int rc; 98861d8658bSDupuis, Chad 98961d8658bSDupuis, Chad if (!orig_io_req) { 99061d8658bSDupuis, Chad QEDF_ERR(NULL, "orig_io_req is NULL.\n"); 99161d8658bSDupuis, Chad return -EINVAL; 99261d8658bSDupuis, Chad } 99361d8658bSDupuis, Chad 99461d8658bSDupuis, Chad fcport = orig_io_req->fcport; 99561d8658bSDupuis, Chad 99661d8658bSDupuis, Chad /* Check that fcport is still offloaded */ 99761d8658bSDupuis, Chad if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { 99861d8658bSDupuis, Chad QEDF_ERR(NULL, "fcport is no longer offloaded.\n"); 99961d8658bSDupuis, Chad return -EINVAL; 100061d8658bSDupuis, Chad } 100161d8658bSDupuis, Chad 100261d8658bSDupuis, Chad if (!fcport->qedf) { 100361d8658bSDupuis, Chad QEDF_ERR(NULL, "fcport->qedf is NULL.\n"); 100461d8658bSDupuis, Chad return -EINVAL; 100561d8658bSDupuis, Chad } 100661d8658bSDupuis, Chad 100761d8658bSDupuis, Chad /* Take reference until REC command completion */ 100861d8658bSDupuis, Chad kref_get(&orig_io_req->refcount); 100961d8658bSDupuis, Chad 101061d8658bSDupuis, Chad qedf = fcport->qedf; 101161d8658bSDupuis, Chad lport = qedf->lport; 101261d8658bSDupuis, Chad sid = fcport->sid; 101361d8658bSDupuis, Chad r_a_tov = lport->r_a_tov; 101461d8658bSDupuis, Chad 101561d8658bSDupuis, Chad memset(&rec, 0, sizeof(rec)); 101661d8658bSDupuis, Chad 101761d8658bSDupuis, Chad cb_arg = kzalloc(sizeof(struct qedf_els_cb_arg), GFP_NOIO); 101861d8658bSDupuis, Chad if (!cb_arg) { 101961d8658bSDupuis, Chad QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate cb_arg for " 102061d8658bSDupuis, Chad "REC\n"); 102161d8658bSDupuis, Chad rc = -ENOMEM; 102261d8658bSDupuis, Chad goto rec_err; 102361d8658bSDupuis, Chad } 102461d8658bSDupuis, Chad 102561d8658bSDupuis, Chad cb_arg->aborted_io_req = orig_io_req; 102661d8658bSDupuis, Chad 102761d8658bSDupuis, Chad rec.rec_cmd = ELS_REC; 102861d8658bSDupuis, Chad hton24(rec.rec_s_id, sid); 102961d8658bSDupuis, Chad rec.rec_ox_id = htons(orig_io_req->xid); 103061d8658bSDupuis, Chad rec.rec_rx_id = 103161d8658bSDupuis, Chad htons(orig_io_req->task->tstorm_st_context.read_write.rx_id); 103261d8658bSDupuis, Chad 103361d8658bSDupuis, Chad QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Sending REC orig_io=%p, " 103461d8658bSDupuis, Chad "orig_xid=0x%x rx_id=0x%x\n", orig_io_req, 103561d8658bSDupuis, Chad orig_io_req->xid, rec.rec_rx_id); 103661d8658bSDupuis, Chad rc = qedf_initiate_els(fcport, ELS_REC, &rec, sizeof(rec), 103761d8658bSDupuis, Chad qedf_rec_compl, cb_arg, r_a_tov); 103861d8658bSDupuis, Chad 103961d8658bSDupuis, Chad rec_err: 104061d8658bSDupuis, Chad if (rc) { 104161d8658bSDupuis, Chad QEDF_ERR(&(qedf->dbg_ctx), "REC failed - release orig_io_req" 104261d8658bSDupuis, Chad "=0x%x\n", orig_io_req->xid); 104361d8658bSDupuis, Chad kfree(cb_arg); 104461d8658bSDupuis, Chad kref_put(&orig_io_req->refcount, qedf_release_cmd); 104561d8658bSDupuis, Chad } 104661d8658bSDupuis, Chad return rc; 104761d8658bSDupuis, Chad } 1048