2011-02-04 13:10:34 -07:00
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/* bnx2fc_io.c: Broadcom NetXtreme II Linux FCoE offload driver.
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* IO manager and SCSI IO processing.
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*
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2011-07-27 12:32:13 -06:00
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* Copyright (c) 2008 - 2011 Broadcom Corporation
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2011-02-04 13:10:34 -07:00
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation.
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*
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* Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
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*/
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#include "bnx2fc.h"
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2011-03-17 18:13:29 -06:00
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#define RESERVE_FREE_LIST_INDEX num_possible_cpus()
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2011-02-04 13:10:34 -07:00
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static int bnx2fc_split_bd(struct bnx2fc_cmd *io_req, u64 addr, int sg_len,
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int bd_index);
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static int bnx2fc_map_sg(struct bnx2fc_cmd *io_req);
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2011-09-19 17:52:13 -06:00
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static int bnx2fc_build_bd_list_from_sg(struct bnx2fc_cmd *io_req);
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2011-02-04 13:10:34 -07:00
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static void bnx2fc_unmap_sg_list(struct bnx2fc_cmd *io_req);
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static void bnx2fc_free_mp_resc(struct bnx2fc_cmd *io_req);
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static void bnx2fc_parse_fcp_rsp(struct bnx2fc_cmd *io_req,
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struct fcoe_fcp_rsp_payload *fcp_rsp,
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u8 num_rq);
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void bnx2fc_cmd_timer_set(struct bnx2fc_cmd *io_req,
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unsigned int timer_msec)
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{
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2011-07-26 15:51:39 -06:00
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struct bnx2fc_interface *interface = io_req->port->priv;
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2011-02-04 13:10:34 -07:00
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2011-07-26 15:51:39 -06:00
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if (queue_delayed_work(interface->timer_work_queue,
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&io_req->timeout_work,
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msecs_to_jiffies(timer_msec)))
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2011-02-04 13:10:34 -07:00
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kref_get(&io_req->refcount);
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}
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static void bnx2fc_cmd_timeout(struct work_struct *work)
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{
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struct bnx2fc_cmd *io_req = container_of(work, struct bnx2fc_cmd,
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timeout_work.work);
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struct fc_lport *lport;
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struct fc_rport_priv *rdata;
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u8 cmd_type = io_req->cmd_type;
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struct bnx2fc_rport *tgt = io_req->tgt;
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int logo_issued;
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int rc;
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BNX2FC_IO_DBG(io_req, "cmd_timeout, cmd_type = %d,"
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"req_flags = %lx\n", cmd_type, io_req->req_flags);
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spin_lock_bh(&tgt->tgt_lock);
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if (test_and_clear_bit(BNX2FC_FLAG_ISSUE_RRQ, &io_req->req_flags)) {
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clear_bit(BNX2FC_FLAG_RETIRE_OXID, &io_req->req_flags);
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/*
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* ideally we should hold the io_req until RRQ complets,
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* and release io_req from timeout hold.
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*/
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spin_unlock_bh(&tgt->tgt_lock);
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bnx2fc_send_rrq(io_req);
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return;
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}
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if (test_and_clear_bit(BNX2FC_FLAG_RETIRE_OXID, &io_req->req_flags)) {
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BNX2FC_IO_DBG(io_req, "IO ready for reuse now\n");
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goto done;
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}
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switch (cmd_type) {
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case BNX2FC_SCSI_CMD:
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if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT,
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&io_req->req_flags)) {
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/* Handle eh_abort timeout */
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BNX2FC_IO_DBG(io_req, "eh_abort timed out\n");
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complete(&io_req->tm_done);
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} else if (test_bit(BNX2FC_FLAG_ISSUE_ABTS,
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&io_req->req_flags)) {
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/* Handle internally generated ABTS timeout */
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BNX2FC_IO_DBG(io_req, "ABTS timed out refcnt = %d\n",
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io_req->refcount.refcount.counter);
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if (!(test_and_set_bit(BNX2FC_FLAG_ABTS_DONE,
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&io_req->req_flags))) {
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lport = io_req->port->lport;
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rdata = io_req->tgt->rdata;
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logo_issued = test_and_set_bit(
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BNX2FC_FLAG_EXPL_LOGO,
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&tgt->flags);
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kref_put(&io_req->refcount, bnx2fc_cmd_release);
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spin_unlock_bh(&tgt->tgt_lock);
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/* Explicitly logo the target */
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if (!logo_issued) {
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BNX2FC_IO_DBG(io_req, "Explicit "
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"logo - tgt flags = 0x%lx\n",
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tgt->flags);
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mutex_lock(&lport->disc.disc_mutex);
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lport->tt.rport_logoff(rdata);
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mutex_unlock(&lport->disc.disc_mutex);
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}
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return;
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}
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} else {
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/* Hanlde IO timeout */
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BNX2FC_IO_DBG(io_req, "IO timed out. issue ABTS\n");
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if (test_and_set_bit(BNX2FC_FLAG_IO_COMPL,
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&io_req->req_flags)) {
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BNX2FC_IO_DBG(io_req, "IO completed before "
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" timer expiry\n");
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goto done;
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}
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if (!test_and_set_bit(BNX2FC_FLAG_ISSUE_ABTS,
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&io_req->req_flags)) {
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rc = bnx2fc_initiate_abts(io_req);
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if (rc == SUCCESS)
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goto done;
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/*
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* Explicitly logo the target if
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* abts initiation fails
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*/
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lport = io_req->port->lport;
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rdata = io_req->tgt->rdata;
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logo_issued = test_and_set_bit(
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BNX2FC_FLAG_EXPL_LOGO,
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&tgt->flags);
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kref_put(&io_req->refcount, bnx2fc_cmd_release);
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spin_unlock_bh(&tgt->tgt_lock);
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if (!logo_issued) {
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BNX2FC_IO_DBG(io_req, "Explicit "
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"logo - tgt flags = 0x%lx\n",
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tgt->flags);
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mutex_lock(&lport->disc.disc_mutex);
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lport->tt.rport_logoff(rdata);
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mutex_unlock(&lport->disc.disc_mutex);
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}
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return;
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} else {
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BNX2FC_IO_DBG(io_req, "IO already in "
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"ABTS processing\n");
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}
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}
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break;
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case BNX2FC_ELS:
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if (test_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags)) {
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BNX2FC_IO_DBG(io_req, "ABTS for ELS timed out\n");
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if (!test_and_set_bit(BNX2FC_FLAG_ABTS_DONE,
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&io_req->req_flags)) {
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lport = io_req->port->lport;
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rdata = io_req->tgt->rdata;
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logo_issued = test_and_set_bit(
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BNX2FC_FLAG_EXPL_LOGO,
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&tgt->flags);
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kref_put(&io_req->refcount, bnx2fc_cmd_release);
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spin_unlock_bh(&tgt->tgt_lock);
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/* Explicitly logo the target */
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if (!logo_issued) {
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BNX2FC_IO_DBG(io_req, "Explicitly logo"
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"(els)\n");
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mutex_lock(&lport->disc.disc_mutex);
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lport->tt.rport_logoff(rdata);
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mutex_unlock(&lport->disc.disc_mutex);
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}
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return;
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}
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} else {
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/*
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* Handle ELS timeout.
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* tgt_lock is used to sync compl path and timeout
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* path. If els compl path is processing this IO, we
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* have nothing to do here, just release the timer hold
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*/
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BNX2FC_IO_DBG(io_req, "ELS timed out\n");
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if (test_and_set_bit(BNX2FC_FLAG_ELS_DONE,
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&io_req->req_flags))
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goto done;
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/* Indicate the cb_func that this ELS is timed out */
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set_bit(BNX2FC_FLAG_ELS_TIMEOUT, &io_req->req_flags);
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if ((io_req->cb_func) && (io_req->cb_arg)) {
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io_req->cb_func(io_req->cb_arg);
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io_req->cb_arg = NULL;
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}
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}
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break;
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default:
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printk(KERN_ERR PFX "cmd_timeout: invalid cmd_type %d\n",
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cmd_type);
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break;
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}
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done:
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/* release the cmd that was held when timer was set */
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kref_put(&io_req->refcount, bnx2fc_cmd_release);
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spin_unlock_bh(&tgt->tgt_lock);
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}
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static void bnx2fc_scsi_done(struct bnx2fc_cmd *io_req, int err_code)
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{
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/* Called with host lock held */
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struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
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/*
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* active_cmd_queue may have other command types as well,
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* and during flush operation, we want to error back only
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* scsi commands.
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*/
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if (io_req->cmd_type != BNX2FC_SCSI_CMD)
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return;
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BNX2FC_IO_DBG(io_req, "scsi_done. err_code = 0x%x\n", err_code);
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2011-07-27 12:32:06 -06:00
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if (test_bit(BNX2FC_FLAG_CMD_LOST, &io_req->req_flags)) {
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/* Do not call scsi done for this IO */
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return;
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}
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2011-02-04 13:10:34 -07:00
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bnx2fc_unmap_sg_list(io_req);
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io_req->sc_cmd = NULL;
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if (!sc_cmd) {
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printk(KERN_ERR PFX "scsi_done - sc_cmd NULL. "
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"IO(0x%x) already cleaned up\n",
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io_req->xid);
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return;
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}
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sc_cmd->result = err_code << 16;
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BNX2FC_IO_DBG(io_req, "sc=%p, result=0x%x, retries=%d, allowed=%d\n",
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sc_cmd, host_byte(sc_cmd->result), sc_cmd->retries,
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sc_cmd->allowed);
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scsi_set_resid(sc_cmd, scsi_bufflen(sc_cmd));
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sc_cmd->SCp.ptr = NULL;
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sc_cmd->scsi_done(sc_cmd);
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}
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struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba,
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u16 min_xid, u16 max_xid)
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{
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struct bnx2fc_cmd_mgr *cmgr;
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struct io_bdt *bdt_info;
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struct bnx2fc_cmd *io_req;
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size_t len;
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u32 mem_size;
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u16 xid;
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int i;
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2011-03-17 18:13:29 -06:00
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int num_ios, num_pri_ios;
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2011-02-04 13:10:34 -07:00
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size_t bd_tbl_sz;
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2011-03-17 18:13:29 -06:00
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int arr_sz = num_possible_cpus() + 1;
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2011-02-04 13:10:34 -07:00
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if (max_xid <= min_xid || max_xid == FC_XID_UNKNOWN) {
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printk(KERN_ERR PFX "cmd_mgr_alloc: Invalid min_xid 0x%x \
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and max_xid 0x%x\n", min_xid, max_xid);
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return NULL;
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}
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BNX2FC_MISC_DBG("min xid 0x%x, max xid 0x%x\n", min_xid, max_xid);
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num_ios = max_xid - min_xid + 1;
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len = (num_ios * (sizeof(struct bnx2fc_cmd *)));
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len += sizeof(struct bnx2fc_cmd_mgr);
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cmgr = kzalloc(len, GFP_KERNEL);
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if (!cmgr) {
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printk(KERN_ERR PFX "failed to alloc cmgr\n");
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return NULL;
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}
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cmgr->free_list = kzalloc(sizeof(*cmgr->free_list) *
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2011-03-17 18:13:29 -06:00
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arr_sz, GFP_KERNEL);
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2011-02-04 13:10:34 -07:00
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if (!cmgr->free_list) {
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printk(KERN_ERR PFX "failed to alloc free_list\n");
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goto mem_err;
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}
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cmgr->free_list_lock = kzalloc(sizeof(*cmgr->free_list_lock) *
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2011-03-17 18:13:29 -06:00
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arr_sz, GFP_KERNEL);
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2011-02-04 13:10:34 -07:00
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if (!cmgr->free_list_lock) {
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printk(KERN_ERR PFX "failed to alloc free_list_lock\n");
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goto mem_err;
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}
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cmgr->hba = hba;
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cmgr->cmds = (struct bnx2fc_cmd **)(cmgr + 1);
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2011-03-17 18:13:29 -06:00
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for (i = 0; i < arr_sz; i++) {
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2011-02-04 13:10:34 -07:00
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INIT_LIST_HEAD(&cmgr->free_list[i]);
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spin_lock_init(&cmgr->free_list_lock[i]);
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}
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2011-03-17 18:13:29 -06:00
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/*
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* Pre-allocated pool of bnx2fc_cmds.
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* Last entry in the free list array is the free list
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* of slow path requests.
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*/
|
2011-02-04 13:10:34 -07:00
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xid = BNX2FC_MIN_XID;
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2011-03-17 18:13:29 -06:00
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num_pri_ios = num_ios - BNX2FC_ELSTM_XIDS;
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2011-02-04 13:10:34 -07:00
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for (i = 0; i < num_ios; i++) {
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io_req = kzalloc(sizeof(*io_req), GFP_KERNEL);
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if (!io_req) {
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printk(KERN_ERR PFX "failed to alloc io_req\n");
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goto mem_err;
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}
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INIT_LIST_HEAD(&io_req->link);
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INIT_DELAYED_WORK(&io_req->timeout_work, bnx2fc_cmd_timeout);
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io_req->xid = xid++;
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2011-03-17 18:13:29 -06:00
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if (i < num_pri_ios)
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list_add_tail(&io_req->link,
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&cmgr->free_list[io_req->xid %
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num_possible_cpus()]);
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else
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list_add_tail(&io_req->link,
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&cmgr->free_list[num_possible_cpus()]);
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2011-02-04 13:10:34 -07:00
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io_req++;
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|
}
|
|
|
|
|
|
|
|
/* Allocate pool of io_bdts - one for each bnx2fc_cmd */
|
|
|
|
mem_size = num_ios * sizeof(struct io_bdt *);
|
|
|
|
cmgr->io_bdt_pool = kmalloc(mem_size, GFP_KERNEL);
|
|
|
|
if (!cmgr->io_bdt_pool) {
|
|
|
|
printk(KERN_ERR PFX "failed to alloc io_bdt_pool\n");
|
|
|
|
goto mem_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
mem_size = sizeof(struct io_bdt);
|
|
|
|
for (i = 0; i < num_ios; i++) {
|
|
|
|
cmgr->io_bdt_pool[i] = kmalloc(mem_size, GFP_KERNEL);
|
|
|
|
if (!cmgr->io_bdt_pool[i]) {
|
|
|
|
printk(KERN_ERR PFX "failed to alloc "
|
|
|
|
"io_bdt_pool[%d]\n", i);
|
|
|
|
goto mem_err;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Allocate an map fcoe_bdt_ctx structures */
|
|
|
|
bd_tbl_sz = BNX2FC_MAX_BDS_PER_CMD * sizeof(struct fcoe_bd_ctx);
|
|
|
|
for (i = 0; i < num_ios; i++) {
|
|
|
|
bdt_info = cmgr->io_bdt_pool[i];
|
|
|
|
bdt_info->bd_tbl = dma_alloc_coherent(&hba->pcidev->dev,
|
|
|
|
bd_tbl_sz,
|
|
|
|
&bdt_info->bd_tbl_dma,
|
|
|
|
GFP_KERNEL);
|
|
|
|
if (!bdt_info->bd_tbl) {
|
|
|
|
printk(KERN_ERR PFX "failed to alloc "
|
|
|
|
"bdt_tbl[%d]\n", i);
|
|
|
|
goto mem_err;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return cmgr;
|
|
|
|
|
|
|
|
mem_err:
|
|
|
|
bnx2fc_cmd_mgr_free(cmgr);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr *cmgr)
|
|
|
|
{
|
|
|
|
struct io_bdt *bdt_info;
|
|
|
|
struct bnx2fc_hba *hba = cmgr->hba;
|
|
|
|
size_t bd_tbl_sz;
|
|
|
|
u16 min_xid = BNX2FC_MIN_XID;
|
|
|
|
u16 max_xid = BNX2FC_MAX_XID;
|
|
|
|
int num_ios;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
num_ios = max_xid - min_xid + 1;
|
|
|
|
|
|
|
|
/* Free fcoe_bdt_ctx structures */
|
|
|
|
if (!cmgr->io_bdt_pool)
|
|
|
|
goto free_cmd_pool;
|
|
|
|
|
|
|
|
bd_tbl_sz = BNX2FC_MAX_BDS_PER_CMD * sizeof(struct fcoe_bd_ctx);
|
|
|
|
for (i = 0; i < num_ios; i++) {
|
|
|
|
bdt_info = cmgr->io_bdt_pool[i];
|
|
|
|
if (bdt_info->bd_tbl) {
|
|
|
|
dma_free_coherent(&hba->pcidev->dev, bd_tbl_sz,
|
|
|
|
bdt_info->bd_tbl,
|
|
|
|
bdt_info->bd_tbl_dma);
|
|
|
|
bdt_info->bd_tbl = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Destroy io_bdt pool */
|
|
|
|
for (i = 0; i < num_ios; i++) {
|
|
|
|
kfree(cmgr->io_bdt_pool[i]);
|
|
|
|
cmgr->io_bdt_pool[i] = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
kfree(cmgr->io_bdt_pool);
|
|
|
|
cmgr->io_bdt_pool = NULL;
|
|
|
|
|
|
|
|
free_cmd_pool:
|
|
|
|
kfree(cmgr->free_list_lock);
|
|
|
|
|
|
|
|
/* Destroy cmd pool */
|
|
|
|
if (!cmgr->free_list)
|
|
|
|
goto free_cmgr;
|
|
|
|
|
2011-03-17 18:13:29 -06:00
|
|
|
for (i = 0; i < num_possible_cpus() + 1; i++) {
|
2012-06-07 03:19:36 -06:00
|
|
|
struct bnx2fc_cmd *tmp, *io_req;
|
2011-02-04 13:10:34 -07:00
|
|
|
|
2012-06-07 03:19:36 -06:00
|
|
|
list_for_each_entry_safe(io_req, tmp,
|
|
|
|
&cmgr->free_list[i], link) {
|
2011-02-04 13:10:34 -07:00
|
|
|
list_del(&io_req->link);
|
|
|
|
kfree(io_req);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
kfree(cmgr->free_list);
|
|
|
|
free_cmgr:
|
|
|
|
/* Free command manager itself */
|
|
|
|
kfree(cmgr);
|
|
|
|
}
|
|
|
|
|
|
|
|
struct bnx2fc_cmd *bnx2fc_elstm_alloc(struct bnx2fc_rport *tgt, int type)
|
|
|
|
{
|
|
|
|
struct fcoe_port *port = tgt->port;
|
2011-07-26 15:51:39 -06:00
|
|
|
struct bnx2fc_interface *interface = port->priv;
|
|
|
|
struct bnx2fc_cmd_mgr *cmd_mgr = interface->hba->cmd_mgr;
|
2011-02-04 13:10:34 -07:00
|
|
|
struct bnx2fc_cmd *io_req;
|
|
|
|
struct list_head *listp;
|
|
|
|
struct io_bdt *bd_tbl;
|
2011-03-17 18:13:29 -06:00
|
|
|
int index = RESERVE_FREE_LIST_INDEX;
|
2011-06-14 05:33:44 -06:00
|
|
|
u32 free_sqes;
|
2011-02-04 13:10:34 -07:00
|
|
|
u32 max_sqes;
|
|
|
|
u16 xid;
|
|
|
|
|
|
|
|
max_sqes = tgt->max_sqes;
|
|
|
|
switch (type) {
|
|
|
|
case BNX2FC_TASK_MGMT_CMD:
|
|
|
|
max_sqes = BNX2FC_TM_MAX_SQES;
|
|
|
|
break;
|
|
|
|
case BNX2FC_ELS:
|
|
|
|
max_sqes = BNX2FC_ELS_MAX_SQES;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* NOTE: Free list insertions and deletions are protected with
|
|
|
|
* cmgr lock
|
|
|
|
*/
|
2011-03-17 18:13:29 -06:00
|
|
|
spin_lock_bh(&cmd_mgr->free_list_lock[index]);
|
2011-06-14 05:33:44 -06:00
|
|
|
free_sqes = atomic_read(&tgt->free_sqes);
|
2011-03-17 18:13:29 -06:00
|
|
|
if ((list_empty(&(cmd_mgr->free_list[index]))) ||
|
2011-06-14 05:33:44 -06:00
|
|
|
(tgt->num_active_ios.counter >= max_sqes) ||
|
|
|
|
(free_sqes + max_sqes <= BNX2FC_SQ_WQES_MAX)) {
|
2011-02-04 13:10:34 -07:00
|
|
|
BNX2FC_TGT_DBG(tgt, "No free els_tm cmds available "
|
|
|
|
"ios(%d):sqes(%d)\n",
|
|
|
|
tgt->num_active_ios.counter, tgt->max_sqes);
|
2011-03-17 18:13:29 -06:00
|
|
|
if (list_empty(&(cmd_mgr->free_list[index])))
|
2011-02-04 13:10:34 -07:00
|
|
|
printk(KERN_ERR PFX "elstm_alloc: list_empty\n");
|
2011-03-17 18:13:29 -06:00
|
|
|
spin_unlock_bh(&cmd_mgr->free_list_lock[index]);
|
2011-02-04 13:10:34 -07:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
listp = (struct list_head *)
|
2011-03-17 18:13:29 -06:00
|
|
|
cmd_mgr->free_list[index].next;
|
2011-02-04 13:10:34 -07:00
|
|
|
list_del_init(listp);
|
|
|
|
io_req = (struct bnx2fc_cmd *) listp;
|
|
|
|
xid = io_req->xid;
|
|
|
|
cmd_mgr->cmds[xid] = io_req;
|
|
|
|
atomic_inc(&tgt->num_active_ios);
|
2011-06-14 05:33:44 -06:00
|
|
|
atomic_dec(&tgt->free_sqes);
|
2011-03-17 18:13:29 -06:00
|
|
|
spin_unlock_bh(&cmd_mgr->free_list_lock[index]);
|
2011-02-04 13:10:34 -07:00
|
|
|
|
|
|
|
INIT_LIST_HEAD(&io_req->link);
|
|
|
|
|
|
|
|
io_req->port = port;
|
|
|
|
io_req->cmd_mgr = cmd_mgr;
|
|
|
|
io_req->req_flags = 0;
|
|
|
|
io_req->cmd_type = type;
|
|
|
|
|
|
|
|
/* Bind io_bdt for this io_req */
|
|
|
|
/* Have a static link between io_req and io_bdt_pool */
|
|
|
|
bd_tbl = io_req->bd_tbl = cmd_mgr->io_bdt_pool[xid];
|
|
|
|
bd_tbl->io_req = io_req;
|
|
|
|
|
|
|
|
/* Hold the io_req against deletion */
|
|
|
|
kref_init(&io_req->refcount);
|
|
|
|
return io_req;
|
|
|
|
}
|
2011-07-26 15:51:39 -06:00
|
|
|
|
|
|
|
struct bnx2fc_cmd *bnx2fc_cmd_alloc(struct bnx2fc_rport *tgt)
|
2011-02-04 13:10:34 -07:00
|
|
|
{
|
|
|
|
struct fcoe_port *port = tgt->port;
|
2011-07-26 15:51:39 -06:00
|
|
|
struct bnx2fc_interface *interface = port->priv;
|
|
|
|
struct bnx2fc_cmd_mgr *cmd_mgr = interface->hba->cmd_mgr;
|
2011-02-04 13:10:34 -07:00
|
|
|
struct bnx2fc_cmd *io_req;
|
|
|
|
struct list_head *listp;
|
|
|
|
struct io_bdt *bd_tbl;
|
2011-06-14 05:33:44 -06:00
|
|
|
u32 free_sqes;
|
2011-02-04 13:10:34 -07:00
|
|
|
u32 max_sqes;
|
|
|
|
u16 xid;
|
2011-03-17 18:13:29 -06:00
|
|
|
int index = get_cpu();
|
2011-02-04 13:10:34 -07:00
|
|
|
|
|
|
|
max_sqes = BNX2FC_SCSI_MAX_SQES;
|
|
|
|
/*
|
|
|
|
* NOTE: Free list insertions and deletions are protected with
|
|
|
|
* cmgr lock
|
|
|
|
*/
|
2011-03-17 18:13:29 -06:00
|
|
|
spin_lock_bh(&cmd_mgr->free_list_lock[index]);
|
2011-06-14 05:33:44 -06:00
|
|
|
free_sqes = atomic_read(&tgt->free_sqes);
|
2011-03-17 18:13:29 -06:00
|
|
|
if ((list_empty(&cmd_mgr->free_list[index])) ||
|
2011-06-14 05:33:44 -06:00
|
|
|
(tgt->num_active_ios.counter >= max_sqes) ||
|
|
|
|
(free_sqes + max_sqes <= BNX2FC_SQ_WQES_MAX)) {
|
2011-03-17 18:13:29 -06:00
|
|
|
spin_unlock_bh(&cmd_mgr->free_list_lock[index]);
|
|
|
|
put_cpu();
|
2011-02-04 13:10:34 -07:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
listp = (struct list_head *)
|
2011-03-17 18:13:29 -06:00
|
|
|
cmd_mgr->free_list[index].next;
|
2011-02-04 13:10:34 -07:00
|
|
|
list_del_init(listp);
|
|
|
|
io_req = (struct bnx2fc_cmd *) listp;
|
|
|
|
xid = io_req->xid;
|
|
|
|
cmd_mgr->cmds[xid] = io_req;
|
|
|
|
atomic_inc(&tgt->num_active_ios);
|
2011-06-14 05:33:44 -06:00
|
|
|
atomic_dec(&tgt->free_sqes);
|
2011-03-17 18:13:29 -06:00
|
|
|
spin_unlock_bh(&cmd_mgr->free_list_lock[index]);
|
|
|
|
put_cpu();
|
2011-02-04 13:10:34 -07:00
|
|
|
|
|
|
|
INIT_LIST_HEAD(&io_req->link);
|
|
|
|
|
|
|
|
io_req->port = port;
|
|
|
|
io_req->cmd_mgr = cmd_mgr;
|
|
|
|
io_req->req_flags = 0;
|
|
|
|
|
|
|
|
/* Bind io_bdt for this io_req */
|
|
|
|
/* Have a static link between io_req and io_bdt_pool */
|
|
|
|
bd_tbl = io_req->bd_tbl = cmd_mgr->io_bdt_pool[xid];
|
|
|
|
bd_tbl->io_req = io_req;
|
|
|
|
|
|
|
|
/* Hold the io_req against deletion */
|
|
|
|
kref_init(&io_req->refcount);
|
|
|
|
return io_req;
|
|
|
|
}
|
|
|
|
|
|
|
|
void bnx2fc_cmd_release(struct kref *ref)
|
|
|
|
{
|
|
|
|
struct bnx2fc_cmd *io_req = container_of(ref,
|
|
|
|
struct bnx2fc_cmd, refcount);
|
|
|
|
struct bnx2fc_cmd_mgr *cmd_mgr = io_req->cmd_mgr;
|
2011-03-17 18:13:29 -06:00
|
|
|
int index;
|
|
|
|
|
|
|
|
if (io_req->cmd_type == BNX2FC_SCSI_CMD)
|
|
|
|
index = io_req->xid % num_possible_cpus();
|
|
|
|
else
|
|
|
|
index = RESERVE_FREE_LIST_INDEX;
|
2011-02-04 13:10:34 -07:00
|
|
|
|
2011-03-17 18:13:29 -06:00
|
|
|
|
|
|
|
spin_lock_bh(&cmd_mgr->free_list_lock[index]);
|
2011-02-04 13:10:34 -07:00
|
|
|
if (io_req->cmd_type != BNX2FC_SCSI_CMD)
|
|
|
|
bnx2fc_free_mp_resc(io_req);
|
|
|
|
cmd_mgr->cmds[io_req->xid] = NULL;
|
|
|
|
/* Delete IO from retire queue */
|
|
|
|
list_del_init(&io_req->link);
|
|
|
|
/* Add it to the free list */
|
|
|
|
list_add(&io_req->link,
|
2011-03-17 18:13:29 -06:00
|
|
|
&cmd_mgr->free_list[index]);
|
2011-02-04 13:10:34 -07:00
|
|
|
atomic_dec(&io_req->tgt->num_active_ios);
|
2011-03-17 18:13:29 -06:00
|
|
|
spin_unlock_bh(&cmd_mgr->free_list_lock[index]);
|
|
|
|
|
2011-02-04 13:10:34 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
static void bnx2fc_free_mp_resc(struct bnx2fc_cmd *io_req)
|
|
|
|
{
|
|
|
|
struct bnx2fc_mp_req *mp_req = &(io_req->mp_req);
|
2011-07-26 15:51:39 -06:00
|
|
|
struct bnx2fc_interface *interface = io_req->port->priv;
|
|
|
|
struct bnx2fc_hba *hba = interface->hba;
|
2011-02-04 13:10:34 -07:00
|
|
|
size_t sz = sizeof(struct fcoe_bd_ctx);
|
|
|
|
|
|
|
|
/* clear tm flags */
|
|
|
|
mp_req->tm_flags = 0;
|
|
|
|
if (mp_req->mp_req_bd) {
|
|
|
|
dma_free_coherent(&hba->pcidev->dev, sz,
|
|
|
|
mp_req->mp_req_bd,
|
|
|
|
mp_req->mp_req_bd_dma);
|
|
|
|
mp_req->mp_req_bd = NULL;
|
|
|
|
}
|
|
|
|
if (mp_req->mp_resp_bd) {
|
|
|
|
dma_free_coherent(&hba->pcidev->dev, sz,
|
|
|
|
mp_req->mp_resp_bd,
|
|
|
|
mp_req->mp_resp_bd_dma);
|
|
|
|
mp_req->mp_resp_bd = NULL;
|
|
|
|
}
|
|
|
|
if (mp_req->req_buf) {
|
|
|
|
dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
|
|
|
|
mp_req->req_buf,
|
|
|
|
mp_req->req_buf_dma);
|
|
|
|
mp_req->req_buf = NULL;
|
|
|
|
}
|
|
|
|
if (mp_req->resp_buf) {
|
|
|
|
dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
|
|
|
|
mp_req->resp_buf,
|
|
|
|
mp_req->resp_buf_dma);
|
|
|
|
mp_req->resp_buf = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
int bnx2fc_init_mp_req(struct bnx2fc_cmd *io_req)
|
|
|
|
{
|
|
|
|
struct bnx2fc_mp_req *mp_req;
|
|
|
|
struct fcoe_bd_ctx *mp_req_bd;
|
|
|
|
struct fcoe_bd_ctx *mp_resp_bd;
|
2011-07-26 15:51:39 -06:00
|
|
|
struct bnx2fc_interface *interface = io_req->port->priv;
|
|
|
|
struct bnx2fc_hba *hba = interface->hba;
|
2011-02-04 13:10:34 -07:00
|
|
|
dma_addr_t addr;
|
|
|
|
size_t sz;
|
|
|
|
|
|
|
|
mp_req = (struct bnx2fc_mp_req *)&(io_req->mp_req);
|
|
|
|
memset(mp_req, 0, sizeof(struct bnx2fc_mp_req));
|
|
|
|
|
|
|
|
mp_req->req_len = sizeof(struct fcp_cmnd);
|
|
|
|
io_req->data_xfer_len = mp_req->req_len;
|
|
|
|
mp_req->req_buf = dma_alloc_coherent(&hba->pcidev->dev, PAGE_SIZE,
|
|
|
|
&mp_req->req_buf_dma,
|
|
|
|
GFP_ATOMIC);
|
|
|
|
if (!mp_req->req_buf) {
|
|
|
|
printk(KERN_ERR PFX "unable to alloc MP req buffer\n");
|
|
|
|
bnx2fc_free_mp_resc(io_req);
|
|
|
|
return FAILED;
|
|
|
|
}
|
|
|
|
|
|
|
|
mp_req->resp_buf = dma_alloc_coherent(&hba->pcidev->dev, PAGE_SIZE,
|
|
|
|
&mp_req->resp_buf_dma,
|
|
|
|
GFP_ATOMIC);
|
|
|
|
if (!mp_req->resp_buf) {
|
|
|
|
printk(KERN_ERR PFX "unable to alloc TM resp buffer\n");
|
|
|
|
bnx2fc_free_mp_resc(io_req);
|
|
|
|
return FAILED;
|
|
|
|
}
|
|
|
|
memset(mp_req->req_buf, 0, PAGE_SIZE);
|
|
|
|
memset(mp_req->resp_buf, 0, PAGE_SIZE);
|
|
|
|
|
|
|
|
/* Allocate and map mp_req_bd and mp_resp_bd */
|
|
|
|
sz = sizeof(struct fcoe_bd_ctx);
|
|
|
|
mp_req->mp_req_bd = dma_alloc_coherent(&hba->pcidev->dev, sz,
|
|
|
|
&mp_req->mp_req_bd_dma,
|
|
|
|
GFP_ATOMIC);
|
|
|
|
if (!mp_req->mp_req_bd) {
|
|
|
|
printk(KERN_ERR PFX "unable to alloc MP req bd\n");
|
|
|
|
bnx2fc_free_mp_resc(io_req);
|
|
|
|
return FAILED;
|
|
|
|
}
|
|
|
|
mp_req->mp_resp_bd = dma_alloc_coherent(&hba->pcidev->dev, sz,
|
|
|
|
&mp_req->mp_resp_bd_dma,
|
|
|
|
GFP_ATOMIC);
|
2013-01-21 06:02:49 -07:00
|
|
|
if (!mp_req->mp_resp_bd) {
|
2011-02-04 13:10:34 -07:00
|
|
|
printk(KERN_ERR PFX "unable to alloc MP resp bd\n");
|
|
|
|
bnx2fc_free_mp_resc(io_req);
|
|
|
|
return FAILED;
|
|
|
|
}
|
|
|
|
/* Fill bd table */
|
|
|
|
addr = mp_req->req_buf_dma;
|
|
|
|
mp_req_bd = mp_req->mp_req_bd;
|
|
|
|
mp_req_bd->buf_addr_lo = (u32)addr & 0xffffffff;
|
|
|
|
mp_req_bd->buf_addr_hi = (u32)((u64)addr >> 32);
|
|
|
|
mp_req_bd->buf_len = PAGE_SIZE;
|
|
|
|
mp_req_bd->flags = 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* MP buffer is either a task mgmt command or an ELS.
|
|
|
|
* So the assumption is that it consumes a single bd
|
|
|
|
* entry in the bd table
|
|
|
|
*/
|
|
|
|
mp_resp_bd = mp_req->mp_resp_bd;
|
|
|
|
addr = mp_req->resp_buf_dma;
|
|
|
|
mp_resp_bd->buf_addr_lo = (u32)addr & 0xffffffff;
|
|
|
|
mp_resp_bd->buf_addr_hi = (u32)((u64)addr >> 32);
|
|
|
|
mp_resp_bd->buf_len = PAGE_SIZE;
|
|
|
|
mp_resp_bd->flags = 0;
|
|
|
|
|
|
|
|
return SUCCESS;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int bnx2fc_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags)
|
|
|
|
{
|
|
|
|
struct fc_lport *lport;
|
2012-12-21 20:40:28 -07:00
|
|
|
struct fc_rport *rport;
|
|
|
|
struct fc_rport_libfc_priv *rp;
|
2011-02-04 13:10:34 -07:00
|
|
|
struct fcoe_port *port;
|
2011-07-26 15:51:39 -06:00
|
|
|
struct bnx2fc_interface *interface;
|
2011-02-04 13:10:34 -07:00
|
|
|
struct bnx2fc_rport *tgt;
|
|
|
|
struct bnx2fc_cmd *io_req;
|
|
|
|
struct bnx2fc_mp_req *tm_req;
|
|
|
|
struct fcoe_task_ctx_entry *task;
|
|
|
|
struct fcoe_task_ctx_entry *task_page;
|
|
|
|
struct Scsi_Host *host = sc_cmd->device->host;
|
|
|
|
struct fc_frame_header *fc_hdr;
|
|
|
|
struct fcp_cmnd *fcp_cmnd;
|
|
|
|
int task_idx, index;
|
|
|
|
int rc = SUCCESS;
|
|
|
|
u16 xid;
|
|
|
|
u32 sid, did;
|
|
|
|
unsigned long start = jiffies;
|
|
|
|
|
|
|
|
lport = shost_priv(host);
|
2012-12-21 20:40:28 -07:00
|
|
|
rport = starget_to_rport(scsi_target(sc_cmd->device));
|
2011-02-04 13:10:34 -07:00
|
|
|
port = lport_priv(lport);
|
2011-07-26 15:51:39 -06:00
|
|
|
interface = port->priv;
|
2011-02-04 13:10:34 -07:00
|
|
|
|
|
|
|
if (rport == NULL) {
|
2011-06-28 00:30:53 -06:00
|
|
|
printk(KERN_ERR PFX "device_reset: rport is NULL\n");
|
2011-02-04 13:10:34 -07:00
|
|
|
rc = FAILED;
|
|
|
|
goto tmf_err;
|
|
|
|
}
|
2012-12-21 20:40:28 -07:00
|
|
|
rp = rport->dd_data;
|
2011-02-04 13:10:34 -07:00
|
|
|
|
|
|
|
rc = fc_block_scsi_eh(sc_cmd);
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
|
|
|
|
if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
|
|
|
|
printk(KERN_ERR PFX "device_reset: link is not ready\n");
|
|
|
|
rc = FAILED;
|
|
|
|
goto tmf_err;
|
|
|
|
}
|
|
|
|
/* rport and tgt are allocated together, so tgt should be non-NULL */
|
|
|
|
tgt = (struct bnx2fc_rport *)&rp[1];
|
|
|
|
|
|
|
|
if (!(test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
|
|
|
|
printk(KERN_ERR PFX "device_reset: tgt not offloaded\n");
|
|
|
|
rc = FAILED;
|
|
|
|
goto tmf_err;
|
|
|
|
}
|
|
|
|
retry_tmf:
|
|
|
|
io_req = bnx2fc_elstm_alloc(tgt, BNX2FC_TASK_MGMT_CMD);
|
|
|
|
if (!io_req) {
|
|
|
|
if (time_after(jiffies, start + HZ)) {
|
|
|
|
printk(KERN_ERR PFX "tmf: Failed TMF");
|
|
|
|
rc = FAILED;
|
|
|
|
goto tmf_err;
|
|
|
|
}
|
|
|
|
msleep(20);
|
|
|
|
goto retry_tmf;
|
|
|
|
}
|
|
|
|
/* Initialize rest of io_req fields */
|
|
|
|
io_req->sc_cmd = sc_cmd;
|
|
|
|
io_req->port = port;
|
|
|
|
io_req->tgt = tgt;
|
|
|
|
|
|
|
|
tm_req = (struct bnx2fc_mp_req *)&(io_req->mp_req);
|
|
|
|
|
|
|
|
rc = bnx2fc_init_mp_req(io_req);
|
|
|
|
if (rc == FAILED) {
|
|
|
|
printk(KERN_ERR PFX "Task mgmt MP request init failed\n");
|
2011-07-27 12:32:10 -06:00
|
|
|
spin_lock_bh(&tgt->tgt_lock);
|
2011-02-04 13:10:34 -07:00
|
|
|
kref_put(&io_req->refcount, bnx2fc_cmd_release);
|
2011-07-27 12:32:10 -06:00
|
|
|
spin_unlock_bh(&tgt->tgt_lock);
|
2011-02-04 13:10:34 -07:00
|
|
|
goto tmf_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Set TM flags */
|
|
|
|
io_req->io_req_flags = 0;
|
|
|
|
tm_req->tm_flags = tm_flags;
|
|
|
|
|
|
|
|
/* Fill FCP_CMND */
|
|
|
|
bnx2fc_build_fcp_cmnd(io_req, (struct fcp_cmnd *)tm_req->req_buf);
|
|
|
|
fcp_cmnd = (struct fcp_cmnd *)tm_req->req_buf;
|
|
|
|
memset(fcp_cmnd->fc_cdb, 0, sc_cmd->cmd_len);
|
|
|
|
fcp_cmnd->fc_dl = 0;
|
|
|
|
|
|
|
|
/* Fill FC header */
|
|
|
|
fc_hdr = &(tm_req->req_fc_hdr);
|
|
|
|
sid = tgt->sid;
|
|
|
|
did = rport->port_id;
|
|
|
|
__fc_fill_fc_hdr(fc_hdr, FC_RCTL_DD_UNSOL_CMD, did, sid,
|
|
|
|
FC_TYPE_FCP, FC_FC_FIRST_SEQ | FC_FC_END_SEQ |
|
|
|
|
FC_FC_SEQ_INIT, 0);
|
|
|
|
/* Obtain exchange id */
|
|
|
|
xid = io_req->xid;
|
|
|
|
|
|
|
|
BNX2FC_TGT_DBG(tgt, "Initiate TMF - xid = 0x%x\n", xid);
|
|
|
|
task_idx = xid/BNX2FC_TASKS_PER_PAGE;
|
|
|
|
index = xid % BNX2FC_TASKS_PER_PAGE;
|
|
|
|
|
|
|
|
/* Initialize task context for this IO request */
|
2011-07-26 15:51:39 -06:00
|
|
|
task_page = (struct fcoe_task_ctx_entry *)
|
|
|
|
interface->hba->task_ctx[task_idx];
|
2011-02-04 13:10:34 -07:00
|
|
|
task = &(task_page[index]);
|
|
|
|
bnx2fc_init_mp_task(io_req, task);
|
|
|
|
|
|
|
|
sc_cmd->SCp.ptr = (char *)io_req;
|
|
|
|
|
|
|
|
/* Obtain free SQ entry */
|
|
|
|
spin_lock_bh(&tgt->tgt_lock);
|
|
|
|
bnx2fc_add_2_sq(tgt, xid);
|
|
|
|
|
|
|
|
/* Enqueue the io_req to active_tm_queue */
|
|
|
|
io_req->on_tmf_queue = 1;
|
|
|
|
list_add_tail(&io_req->link, &tgt->active_tm_queue);
|
|
|
|
|
|
|
|
init_completion(&io_req->tm_done);
|
|
|
|
io_req->wait_for_comp = 1;
|
|
|
|
|
|
|
|
/* Ring doorbell */
|
|
|
|
bnx2fc_ring_doorbell(tgt);
|
|
|
|
spin_unlock_bh(&tgt->tgt_lock);
|
|
|
|
|
|
|
|
rc = wait_for_completion_timeout(&io_req->tm_done,
|
|
|
|
BNX2FC_TM_TIMEOUT * HZ);
|
|
|
|
spin_lock_bh(&tgt->tgt_lock);
|
|
|
|
|
|
|
|
io_req->wait_for_comp = 0;
|
2012-04-24 16:26:03 -06:00
|
|
|
if (!(test_bit(BNX2FC_FLAG_TM_COMPL, &io_req->req_flags))) {
|
2011-02-04 13:10:34 -07:00
|
|
|
set_bit(BNX2FC_FLAG_TM_TIMEOUT, &io_req->req_flags);
|
2012-04-24 16:26:03 -06:00
|
|
|
if (io_req->on_tmf_queue) {
|
|
|
|
list_del_init(&io_req->link);
|
|
|
|
io_req->on_tmf_queue = 0;
|
|
|
|
}
|
|
|
|
io_req->wait_for_comp = 1;
|
|
|
|
bnx2fc_initiate_cleanup(io_req);
|
|
|
|
spin_unlock_bh(&tgt->tgt_lock);
|
|
|
|
rc = wait_for_completion_timeout(&io_req->tm_done,
|
|
|
|
BNX2FC_FW_TIMEOUT);
|
|
|
|
spin_lock_bh(&tgt->tgt_lock);
|
|
|
|
io_req->wait_for_comp = 0;
|
|
|
|
if (!rc)
|
|
|
|
kref_put(&io_req->refcount, bnx2fc_cmd_release);
|
|
|
|
}
|
2011-02-04 13:10:34 -07:00
|
|
|
|
|
|
|
spin_unlock_bh(&tgt->tgt_lock);
|
|
|
|
|
|
|
|
if (!rc) {
|
2011-06-28 00:30:53 -06:00
|
|
|
BNX2FC_TGT_DBG(tgt, "task mgmt command failed...\n");
|
2011-02-04 13:10:34 -07:00
|
|
|
rc = FAILED;
|
|
|
|
} else {
|
2011-06-28 00:30:53 -06:00
|
|
|
BNX2FC_TGT_DBG(tgt, "task mgmt command success...\n");
|
2011-02-04 13:10:34 -07:00
|
|
|
rc = SUCCESS;
|
|
|
|
}
|
|
|
|
tmf_err:
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
int bnx2fc_initiate_abts(struct bnx2fc_cmd *io_req)
|
|
|
|
{
|
|
|
|
struct fc_lport *lport;
|
|
|
|
struct bnx2fc_rport *tgt = io_req->tgt;
|
|
|
|
struct fc_rport *rport = tgt->rport;
|
|
|
|
struct fc_rport_priv *rdata = tgt->rdata;
|
2011-07-26 15:51:39 -06:00
|
|
|
struct bnx2fc_interface *interface;
|
2011-02-04 13:10:34 -07:00
|
|
|
struct fcoe_port *port;
|
|
|
|
struct bnx2fc_cmd *abts_io_req;
|
|
|
|
struct fcoe_task_ctx_entry *task;
|
|
|
|
struct fcoe_task_ctx_entry *task_page;
|
|
|
|
struct fc_frame_header *fc_hdr;
|
|
|
|
struct bnx2fc_mp_req *abts_req;
|
|
|
|
int task_idx, index;
|
|
|
|
u32 sid, did;
|
|
|
|
u16 xid;
|
|
|
|
int rc = SUCCESS;
|
|
|
|
u32 r_a_tov = rdata->r_a_tov;
|
|
|
|
|
|
|
|
/* called with tgt_lock held */
|
|
|
|
BNX2FC_IO_DBG(io_req, "Entered bnx2fc_initiate_abts\n");
|
|
|
|
|
|
|
|
port = io_req->port;
|
2011-07-26 15:51:39 -06:00
|
|
|
interface = port->priv;
|
2011-02-04 13:10:34 -07:00
|
|
|
lport = port->lport;
|
|
|
|
|
|
|
|
if (!test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags)) {
|
|
|
|
printk(KERN_ERR PFX "initiate_abts: tgt not offloaded\n");
|
|
|
|
rc = FAILED;
|
|
|
|
goto abts_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (rport == NULL) {
|
2011-06-28 00:30:53 -06:00
|
|
|
printk(KERN_ERR PFX "initiate_abts: rport is NULL\n");
|
2011-02-04 13:10:34 -07:00
|
|
|
rc = FAILED;
|
|
|
|
goto abts_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
|
|
|
|
printk(KERN_ERR PFX "initiate_abts: link is not ready\n");
|
|
|
|
rc = FAILED;
|
|
|
|
goto abts_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
abts_io_req = bnx2fc_elstm_alloc(tgt, BNX2FC_ABTS);
|
|
|
|
if (!abts_io_req) {
|
|
|
|
printk(KERN_ERR PFX "abts: couldnt allocate cmd\n");
|
|
|
|
rc = FAILED;
|
|
|
|
goto abts_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Initialize rest of io_req fields */
|
|
|
|
abts_io_req->sc_cmd = NULL;
|
|
|
|
abts_io_req->port = port;
|
|
|
|
abts_io_req->tgt = tgt;
|
|
|
|
abts_io_req->data_xfer_len = 0; /* No data transfer for ABTS */
|
|
|
|
|
|
|
|
abts_req = (struct bnx2fc_mp_req *)&(abts_io_req->mp_req);
|
|
|
|
memset(abts_req, 0, sizeof(struct bnx2fc_mp_req));
|
|
|
|
|
|
|
|
/* Fill FC header */
|
|
|
|
fc_hdr = &(abts_req->req_fc_hdr);
|
|
|
|
|
|
|
|
/* Obtain oxid and rxid for the original exchange to be aborted */
|
|
|
|
fc_hdr->fh_ox_id = htons(io_req->xid);
|
2011-06-14 05:33:44 -06:00
|
|
|
fc_hdr->fh_rx_id = htons(io_req->task->rxwr_txrd.var_ctx.rx_id);
|
2011-02-04 13:10:34 -07:00
|
|
|
|
|
|
|
sid = tgt->sid;
|
|
|
|
did = rport->port_id;
|
|
|
|
|
|
|
|
__fc_fill_fc_hdr(fc_hdr, FC_RCTL_BA_ABTS, did, sid,
|
|
|
|
FC_TYPE_BLS, FC_FC_FIRST_SEQ | FC_FC_END_SEQ |
|
|
|
|
FC_FC_SEQ_INIT, 0);
|
|
|
|
|
|
|
|
xid = abts_io_req->xid;
|
|
|
|
BNX2FC_IO_DBG(abts_io_req, "ABTS io_req\n");
|
|
|
|
task_idx = xid/BNX2FC_TASKS_PER_PAGE;
|
|
|
|
index = xid % BNX2FC_TASKS_PER_PAGE;
|
|
|
|
|
|
|
|
/* Initialize task context for this IO request */
|
2011-07-26 15:51:39 -06:00
|
|
|
task_page = (struct fcoe_task_ctx_entry *)
|
|
|
|
interface->hba->task_ctx[task_idx];
|
2011-02-04 13:10:34 -07:00
|
|
|
task = &(task_page[index]);
|
|
|
|
bnx2fc_init_mp_task(abts_io_req, task);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ABTS task is a temporary task that will be cleaned up
|
|
|
|
* irrespective of ABTS response. We need to start the timer
|
|
|
|
* for the original exchange, as the CQE is posted for the original
|
|
|
|
* IO request.
|
|
|
|
*
|
|
|
|
* Timer for ABTS is started only when it is originated by a
|
|
|
|
* TM request. For the ABTS issued as part of ULP timeout,
|
|
|
|
* scsi-ml maintains the timers.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* if (test_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags))*/
|
|
|
|
bnx2fc_cmd_timer_set(io_req, 2 * r_a_tov);
|
|
|
|
|
|
|
|
/* Obtain free SQ entry */
|
|
|
|
bnx2fc_add_2_sq(tgt, xid);
|
|
|
|
|
|
|
|
/* Ring doorbell */
|
|
|
|
bnx2fc_ring_doorbell(tgt);
|
|
|
|
|
|
|
|
abts_err:
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
2011-07-27 12:32:05 -06:00
|
|
|
int bnx2fc_initiate_seq_cleanup(struct bnx2fc_cmd *orig_io_req, u32 offset,
|
|
|
|
enum fc_rctl r_ctl)
|
|
|
|
{
|
|
|
|
struct fc_lport *lport;
|
|
|
|
struct bnx2fc_rport *tgt = orig_io_req->tgt;
|
|
|
|
struct bnx2fc_interface *interface;
|
|
|
|
struct fcoe_port *port;
|
|
|
|
struct bnx2fc_cmd *seq_clnp_req;
|
|
|
|
struct fcoe_task_ctx_entry *task;
|
|
|
|
struct fcoe_task_ctx_entry *task_page;
|
|
|
|
struct bnx2fc_els_cb_arg *cb_arg = NULL;
|
|
|
|
int task_idx, index;
|
|
|
|
u16 xid;
|
|
|
|
int rc = 0;
|
|
|
|
|
|
|
|
BNX2FC_IO_DBG(orig_io_req, "bnx2fc_initiate_seq_cleanup xid = 0x%x\n",
|
|
|
|
orig_io_req->xid);
|
|
|
|
kref_get(&orig_io_req->refcount);
|
|
|
|
|
|
|
|
port = orig_io_req->port;
|
|
|
|
interface = port->priv;
|
|
|
|
lport = port->lport;
|
|
|
|
|
|
|
|
cb_arg = kzalloc(sizeof(struct bnx2fc_els_cb_arg), GFP_ATOMIC);
|
|
|
|
if (!cb_arg) {
|
|
|
|
printk(KERN_ERR PFX "Unable to alloc cb_arg for seq clnup\n");
|
|
|
|
rc = -ENOMEM;
|
|
|
|
goto cleanup_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
seq_clnp_req = bnx2fc_elstm_alloc(tgt, BNX2FC_SEQ_CLEANUP);
|
|
|
|
if (!seq_clnp_req) {
|
|
|
|
printk(KERN_ERR PFX "cleanup: couldnt allocate cmd\n");
|
|
|
|
rc = -ENOMEM;
|
|
|
|
kfree(cb_arg);
|
|
|
|
goto cleanup_err;
|
|
|
|
}
|
|
|
|
/* Initialize rest of io_req fields */
|
|
|
|
seq_clnp_req->sc_cmd = NULL;
|
|
|
|
seq_clnp_req->port = port;
|
|
|
|
seq_clnp_req->tgt = tgt;
|
|
|
|
seq_clnp_req->data_xfer_len = 0; /* No data transfer for cleanup */
|
|
|
|
|
|
|
|
xid = seq_clnp_req->xid;
|
|
|
|
|
|
|
|
task_idx = xid/BNX2FC_TASKS_PER_PAGE;
|
|
|
|
index = xid % BNX2FC_TASKS_PER_PAGE;
|
|
|
|
|
|
|
|
/* Initialize task context for this IO request */
|
|
|
|
task_page = (struct fcoe_task_ctx_entry *)
|
|
|
|
interface->hba->task_ctx[task_idx];
|
|
|
|
task = &(task_page[index]);
|
|
|
|
cb_arg->aborted_io_req = orig_io_req;
|
|
|
|
cb_arg->io_req = seq_clnp_req;
|
|
|
|
cb_arg->r_ctl = r_ctl;
|
|
|
|
cb_arg->offset = offset;
|
|
|
|
seq_clnp_req->cb_arg = cb_arg;
|
|
|
|
|
|
|
|
printk(KERN_ERR PFX "call init_seq_cleanup_task\n");
|
|
|
|
bnx2fc_init_seq_cleanup_task(seq_clnp_req, task, orig_io_req, offset);
|
|
|
|
|
|
|
|
/* Obtain free SQ entry */
|
|
|
|
bnx2fc_add_2_sq(tgt, xid);
|
|
|
|
|
|
|
|
/* Ring doorbell */
|
|
|
|
bnx2fc_ring_doorbell(tgt);
|
|
|
|
cleanup_err:
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
2011-02-04 13:10:34 -07:00
|
|
|
int bnx2fc_initiate_cleanup(struct bnx2fc_cmd *io_req)
|
|
|
|
{
|
|
|
|
struct fc_lport *lport;
|
|
|
|
struct bnx2fc_rport *tgt = io_req->tgt;
|
2011-07-26 15:51:39 -06:00
|
|
|
struct bnx2fc_interface *interface;
|
2011-02-04 13:10:34 -07:00
|
|
|
struct fcoe_port *port;
|
|
|
|
struct bnx2fc_cmd *cleanup_io_req;
|
|
|
|
struct fcoe_task_ctx_entry *task;
|
|
|
|
struct fcoe_task_ctx_entry *task_page;
|
|
|
|
int task_idx, index;
|
|
|
|
u16 xid, orig_xid;
|
|
|
|
int rc = 0;
|
|
|
|
|
|
|
|
/* ASSUMPTION: called with tgt_lock held */
|
|
|
|
BNX2FC_IO_DBG(io_req, "Entered bnx2fc_initiate_cleanup\n");
|
|
|
|
|
|
|
|
port = io_req->port;
|
2011-07-26 15:51:39 -06:00
|
|
|
interface = port->priv;
|
2011-02-04 13:10:34 -07:00
|
|
|
lport = port->lport;
|
|
|
|
|
|
|
|
cleanup_io_req = bnx2fc_elstm_alloc(tgt, BNX2FC_CLEANUP);
|
|
|
|
if (!cleanup_io_req) {
|
|
|
|
printk(KERN_ERR PFX "cleanup: couldnt allocate cmd\n");
|
|
|
|
rc = -1;
|
|
|
|
goto cleanup_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Initialize rest of io_req fields */
|
|
|
|
cleanup_io_req->sc_cmd = NULL;
|
|
|
|
cleanup_io_req->port = port;
|
|
|
|
cleanup_io_req->tgt = tgt;
|
|
|
|
cleanup_io_req->data_xfer_len = 0; /* No data transfer for cleanup */
|
|
|
|
|
|
|
|
xid = cleanup_io_req->xid;
|
|
|
|
|
|
|
|
task_idx = xid/BNX2FC_TASKS_PER_PAGE;
|
|
|
|
index = xid % BNX2FC_TASKS_PER_PAGE;
|
|
|
|
|
|
|
|
/* Initialize task context for this IO request */
|
2011-07-26 15:51:39 -06:00
|
|
|
task_page = (struct fcoe_task_ctx_entry *)
|
|
|
|
interface->hba->task_ctx[task_idx];
|
2011-02-04 13:10:34 -07:00
|
|
|
task = &(task_page[index]);
|
|
|
|
orig_xid = io_req->xid;
|
|
|
|
|
|
|
|
BNX2FC_IO_DBG(io_req, "CLEANUP io_req xid = 0x%x\n", xid);
|
|
|
|
|
|
|
|
bnx2fc_init_cleanup_task(cleanup_io_req, task, orig_xid);
|
|
|
|
|
|
|
|
/* Obtain free SQ entry */
|
|
|
|
bnx2fc_add_2_sq(tgt, xid);
|
|
|
|
|
|
|
|
/* Ring doorbell */
|
|
|
|
bnx2fc_ring_doorbell(tgt);
|
|
|
|
|
|
|
|
cleanup_err:
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* bnx2fc_eh_target_reset: Reset a target
|
|
|
|
*
|
|
|
|
* @sc_cmd: SCSI command
|
|
|
|
*
|
|
|
|
* Set from SCSI host template to send task mgmt command to the target
|
|
|
|
* and wait for the response
|
|
|
|
*/
|
|
|
|
int bnx2fc_eh_target_reset(struct scsi_cmnd *sc_cmd)
|
|
|
|
{
|
|
|
|
return bnx2fc_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* bnx2fc_eh_device_reset - Reset a single LUN
|
|
|
|
*
|
|
|
|
* @sc_cmd: SCSI command
|
|
|
|
*
|
|
|
|
* Set from SCSI host template to send task mgmt command to the target
|
|
|
|
* and wait for the response
|
|
|
|
*/
|
|
|
|
int bnx2fc_eh_device_reset(struct scsi_cmnd *sc_cmd)
|
|
|
|
{
|
|
|
|
return bnx2fc_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
|
|
|
|
}
|
|
|
|
|
2012-04-24 16:26:02 -06:00
|
|
|
int bnx2fc_expl_logo(struct fc_lport *lport, struct bnx2fc_cmd *io_req)
|
|
|
|
{
|
|
|
|
struct bnx2fc_rport *tgt = io_req->tgt;
|
|
|
|
struct fc_rport_priv *rdata = tgt->rdata;
|
|
|
|
int logo_issued;
|
|
|
|
int rc = SUCCESS;
|
|
|
|
int wait_cnt = 0;
|
|
|
|
|
|
|
|
BNX2FC_IO_DBG(io_req, "Expl logo - tgt flags = 0x%lx\n",
|
|
|
|
tgt->flags);
|
|
|
|
logo_issued = test_and_set_bit(BNX2FC_FLAG_EXPL_LOGO,
|
|
|
|
&tgt->flags);
|
|
|
|
io_req->wait_for_comp = 1;
|
|
|
|
bnx2fc_initiate_cleanup(io_req);
|
|
|
|
|
|
|
|
spin_unlock_bh(&tgt->tgt_lock);
|
|
|
|
|
|
|
|
wait_for_completion(&io_req->tm_done);
|
|
|
|
|
|
|
|
io_req->wait_for_comp = 0;
|
|
|
|
/*
|
|
|
|
* release the reference taken in eh_abort to allow the
|
|
|
|
* target to re-login after flushing IOs
|
|
|
|
*/
|
|
|
|
kref_put(&io_req->refcount, bnx2fc_cmd_release);
|
|
|
|
|
|
|
|
if (!logo_issued) {
|
|
|
|
clear_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags);
|
|
|
|
mutex_lock(&lport->disc.disc_mutex);
|
|
|
|
lport->tt.rport_logoff(rdata);
|
|
|
|
mutex_unlock(&lport->disc.disc_mutex);
|
|
|
|
do {
|
|
|
|
msleep(BNX2FC_RELOGIN_WAIT_TIME);
|
|
|
|
if (wait_cnt++ > BNX2FC_RELOGIN_WAIT_CNT) {
|
|
|
|
rc = FAILED;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
} while (!test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags));
|
|
|
|
}
|
|
|
|
spin_lock_bh(&tgt->tgt_lock);
|
|
|
|
return rc;
|
|
|
|
}
|
2011-02-04 13:10:34 -07:00
|
|
|
/**
|
|
|
|
* bnx2fc_eh_abort - eh_abort_handler api to abort an outstanding
|
|
|
|
* SCSI command
|
|
|
|
*
|
|
|
|
* @sc_cmd: SCSI_ML command pointer
|
|
|
|
*
|
|
|
|
* SCSI abort request handler
|
|
|
|
*/
|
|
|
|
int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd)
|
|
|
|
{
|
|
|
|
struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
|
|
|
|
struct fc_rport_libfc_priv *rp = rport->dd_data;
|
|
|
|
struct bnx2fc_cmd *io_req;
|
|
|
|
struct fc_lport *lport;
|
|
|
|
struct bnx2fc_rport *tgt;
|
|
|
|
int rc = FAILED;
|
|
|
|
|
|
|
|
|
|
|
|
rc = fc_block_scsi_eh(sc_cmd);
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
|
|
|
|
lport = shost_priv(sc_cmd->device->host);
|
|
|
|
if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) {
|
2011-06-28 00:30:53 -06:00
|
|
|
printk(KERN_ERR PFX "eh_abort: link not ready\n");
|
2011-02-04 13:10:34 -07:00
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
tgt = (struct bnx2fc_rport *)&rp[1];
|
|
|
|
|
|
|
|
BNX2FC_TGT_DBG(tgt, "Entered bnx2fc_eh_abort\n");
|
|
|
|
|
|
|
|
spin_lock_bh(&tgt->tgt_lock);
|
|
|
|
io_req = (struct bnx2fc_cmd *)sc_cmd->SCp.ptr;
|
|
|
|
if (!io_req) {
|
|
|
|
/* Command might have just completed */
|
|
|
|
printk(KERN_ERR PFX "eh_abort: io_req is NULL\n");
|
|
|
|
spin_unlock_bh(&tgt->tgt_lock);
|
|
|
|
return SUCCESS;
|
|
|
|
}
|
|
|
|
BNX2FC_IO_DBG(io_req, "eh_abort - refcnt = %d\n",
|
|
|
|
io_req->refcount.refcount.counter);
|
|
|
|
|
|
|
|
/* Hold IO request across abort processing */
|
|
|
|
kref_get(&io_req->refcount);
|
|
|
|
|
|
|
|
BUG_ON(tgt != io_req->tgt);
|
|
|
|
|
|
|
|
/* Remove the io_req from the active_q. */
|
|
|
|
/*
|
|
|
|
* Task Mgmt functions (LUN RESET & TGT RESET) will not
|
|
|
|
* issue an ABTS on this particular IO req, as the
|
|
|
|
* io_req is no longer in the active_q.
|
|
|
|
*/
|
|
|
|
if (tgt->flush_in_prog) {
|
2011-06-28 00:30:53 -06:00
|
|
|
printk(KERN_ERR PFX "eh_abort: io_req (xid = 0x%x) "
|
2011-02-04 13:10:34 -07:00
|
|
|
"flush in progress\n", io_req->xid);
|
|
|
|
kref_put(&io_req->refcount, bnx2fc_cmd_release);
|
|
|
|
spin_unlock_bh(&tgt->tgt_lock);
|
|
|
|
return SUCCESS;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (io_req->on_active_queue == 0) {
|
2011-06-28 00:30:53 -06:00
|
|
|
printk(KERN_ERR PFX "eh_abort: io_req (xid = 0x%x) "
|
2011-02-04 13:10:34 -07:00
|
|
|
"not on active_q\n", io_req->xid);
|
|
|
|
/*
|
|
|
|
* This condition can happen only due to the FW bug,
|
|
|
|
* where we do not receive cleanup response from
|
|
|
|
* the FW. Handle this case gracefully by erroring
|
|
|
|
* back the IO request to SCSI-ml
|
|
|
|
*/
|
|
|
|
bnx2fc_scsi_done(io_req, DID_ABORT);
|
|
|
|
|
|
|
|
kref_put(&io_req->refcount, bnx2fc_cmd_release);
|
|
|
|
spin_unlock_bh(&tgt->tgt_lock);
|
|
|
|
return SUCCESS;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Only eh_abort processing will remove the IO from
|
|
|
|
* active_cmd_q before processing the request. this is
|
|
|
|
* done to avoid race conditions between IOs aborted
|
|
|
|
* as part of task management completion and eh_abort
|
|
|
|
* processing
|
|
|
|
*/
|
|
|
|
list_del_init(&io_req->link);
|
|
|
|
io_req->on_active_queue = 0;
|
|
|
|
/* Move IO req to retire queue */
|
|
|
|
list_add_tail(&io_req->link, &tgt->io_retire_queue);
|
|
|
|
|
|
|
|
init_completion(&io_req->tm_done);
|
|
|
|
|
2012-04-24 16:26:02 -06:00
|
|
|
if (test_and_set_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags)) {
|
2011-06-28 00:30:53 -06:00
|
|
|
printk(KERN_ERR PFX "eh_abort: io_req (xid = 0x%x) "
|
2011-02-04 13:10:34 -07:00
|
|
|
"already in abts processing\n", io_req->xid);
|
2011-10-24 00:23:56 -06:00
|
|
|
if (cancel_delayed_work(&io_req->timeout_work))
|
|
|
|
kref_put(&io_req->refcount,
|
|
|
|
bnx2fc_cmd_release); /* drop timer hold */
|
2012-04-24 16:26:02 -06:00
|
|
|
rc = bnx2fc_expl_logo(lport, io_req);
|
|
|
|
goto out;
|
|
|
|
}
|
2011-10-24 00:23:56 -06:00
|
|
|
|
2012-04-24 16:26:02 -06:00
|
|
|
/* Cancel the current timer running on this io_req */
|
|
|
|
if (cancel_delayed_work(&io_req->timeout_work))
|
|
|
|
kref_put(&io_req->refcount,
|
|
|
|
bnx2fc_cmd_release); /* drop timer hold */
|
|
|
|
set_bit(BNX2FC_FLAG_EH_ABORT, &io_req->req_flags);
|
|
|
|
io_req->wait_for_comp = 1;
|
|
|
|
rc = bnx2fc_initiate_abts(io_req);
|
|
|
|
if (rc == FAILED) {
|
|
|
|
bnx2fc_initiate_cleanup(io_req);
|
2011-10-24 00:23:56 -06:00
|
|
|
spin_unlock_bh(&tgt->tgt_lock);
|
|
|
|
wait_for_completion(&io_req->tm_done);
|
|
|
|
spin_lock_bh(&tgt->tgt_lock);
|
|
|
|
io_req->wait_for_comp = 0;
|
2012-04-24 16:26:02 -06:00
|
|
|
goto done;
|
2011-02-04 13:10:34 -07:00
|
|
|
}
|
|
|
|
spin_unlock_bh(&tgt->tgt_lock);
|
|
|
|
|
|
|
|
wait_for_completion(&io_req->tm_done);
|
|
|
|
|
|
|
|
spin_lock_bh(&tgt->tgt_lock);
|
|
|
|
io_req->wait_for_comp = 0;
|
|
|
|
if (!(test_and_set_bit(BNX2FC_FLAG_ABTS_DONE,
|
|
|
|
&io_req->req_flags))) {
|
|
|
|
/* Let the scsi-ml try to recover this command */
|
|
|
|
printk(KERN_ERR PFX "abort failed, xid = 0x%x\n",
|
|
|
|
io_req->xid);
|
2012-04-24 16:26:02 -06:00
|
|
|
rc = bnx2fc_expl_logo(lport, io_req);
|
|
|
|
goto out;
|
2011-02-04 13:10:34 -07:00
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* We come here even when there was a race condition
|
|
|
|
* between timeout and abts completion, and abts
|
|
|
|
* completion happens just in time.
|
|
|
|
*/
|
|
|
|
BNX2FC_IO_DBG(io_req, "abort succeeded\n");
|
|
|
|
rc = SUCCESS;
|
|
|
|
bnx2fc_scsi_done(io_req, DID_ABORT);
|
|
|
|
kref_put(&io_req->refcount, bnx2fc_cmd_release);
|
|
|
|
}
|
2012-04-24 16:26:02 -06:00
|
|
|
done:
|
2011-02-04 13:10:34 -07:00
|
|
|
/* release the reference taken in eh_abort */
|
|
|
|
kref_put(&io_req->refcount, bnx2fc_cmd_release);
|
2012-04-24 16:26:02 -06:00
|
|
|
out:
|
2011-02-04 13:10:34 -07:00
|
|
|
spin_unlock_bh(&tgt->tgt_lock);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
2011-07-27 12:32:05 -06:00
|
|
|
void bnx2fc_process_seq_cleanup_compl(struct bnx2fc_cmd *seq_clnp_req,
|
|
|
|
struct fcoe_task_ctx_entry *task,
|
|
|
|
u8 rx_state)
|
|
|
|
{
|
|
|
|
struct bnx2fc_els_cb_arg *cb_arg = seq_clnp_req->cb_arg;
|
|
|
|
struct bnx2fc_cmd *orig_io_req = cb_arg->aborted_io_req;
|
|
|
|
u32 offset = cb_arg->offset;
|
|
|
|
enum fc_rctl r_ctl = cb_arg->r_ctl;
|
|
|
|
int rc = 0;
|
|
|
|
struct bnx2fc_rport *tgt = orig_io_req->tgt;
|
|
|
|
|
|
|
|
BNX2FC_IO_DBG(orig_io_req, "Entered process_cleanup_compl xid = 0x%x"
|
|
|
|
"cmd_type = %d\n",
|
|
|
|
seq_clnp_req->xid, seq_clnp_req->cmd_type);
|
|
|
|
|
|
|
|
if (rx_state == FCOE_TASK_RX_STATE_IGNORED_SEQUENCE_CLEANUP) {
|
|
|
|
printk(KERN_ERR PFX "seq cleanup ignored - xid = 0x%x\n",
|
|
|
|
seq_clnp_req->xid);
|
|
|
|
goto free_cb_arg;
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_unlock_bh(&tgt->tgt_lock);
|
|
|
|
rc = bnx2fc_send_srr(orig_io_req, offset, r_ctl);
|
|
|
|
spin_lock_bh(&tgt->tgt_lock);
|
|
|
|
|
|
|
|
if (rc)
|
|
|
|
printk(KERN_ERR PFX "clnup_compl: Unable to send SRR"
|
|
|
|
" IO will abort\n");
|
|
|
|
seq_clnp_req->cb_arg = NULL;
|
|
|
|
kref_put(&orig_io_req->refcount, bnx2fc_cmd_release);
|
|
|
|
free_cb_arg:
|
|
|
|
kfree(cb_arg);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2011-02-04 13:10:34 -07:00
|
|
|
void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd *io_req,
|
|
|
|
struct fcoe_task_ctx_entry *task,
|
|
|
|
u8 num_rq)
|
|
|
|
{
|
|
|
|
BNX2FC_IO_DBG(io_req, "Entered process_cleanup_compl "
|
|
|
|
"refcnt = %d, cmd_type = %d\n",
|
|
|
|
io_req->refcount.refcount.counter, io_req->cmd_type);
|
|
|
|
bnx2fc_scsi_done(io_req, DID_ERROR);
|
|
|
|
kref_put(&io_req->refcount, bnx2fc_cmd_release);
|
2011-10-24 00:23:56 -06:00
|
|
|
if (io_req->wait_for_comp)
|
|
|
|
complete(&io_req->tm_done);
|
2011-02-04 13:10:34 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req,
|
|
|
|
struct fcoe_task_ctx_entry *task,
|
|
|
|
u8 num_rq)
|
|
|
|
{
|
|
|
|
u32 r_ctl;
|
|
|
|
u32 r_a_tov = FC_DEF_R_A_TOV;
|
|
|
|
u8 issue_rrq = 0;
|
|
|
|
struct bnx2fc_rport *tgt = io_req->tgt;
|
|
|
|
|
|
|
|
BNX2FC_IO_DBG(io_req, "Entered process_abts_compl xid = 0x%x"
|
|
|
|
"refcnt = %d, cmd_type = %d\n",
|
|
|
|
io_req->xid,
|
|
|
|
io_req->refcount.refcount.counter, io_req->cmd_type);
|
|
|
|
|
|
|
|
if (test_and_set_bit(BNX2FC_FLAG_ABTS_DONE,
|
|
|
|
&io_req->req_flags)) {
|
|
|
|
BNX2FC_IO_DBG(io_req, "Timer context finished processing"
|
|
|
|
" this io\n");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Do not issue RRQ as this IO is already cleanedup */
|
|
|
|
if (test_and_set_bit(BNX2FC_FLAG_IO_CLEANUP,
|
|
|
|
&io_req->req_flags))
|
|
|
|
goto io_compl;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* For ABTS issued due to SCSI eh_abort_handler, timeout
|
|
|
|
* values are maintained by scsi-ml itself. Cancel timeout
|
|
|
|
* in case ABTS issued as part of task management function
|
|
|
|
* or due to FW error.
|
|
|
|
*/
|
|
|
|
if (test_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags))
|
|
|
|
if (cancel_delayed_work(&io_req->timeout_work))
|
|
|
|
kref_put(&io_req->refcount,
|
|
|
|
bnx2fc_cmd_release); /* drop timer hold */
|
|
|
|
|
2011-06-14 05:33:44 -06:00
|
|
|
r_ctl = (u8)task->rxwr_only.union_ctx.comp_info.abts_rsp.r_ctl;
|
2011-02-04 13:10:34 -07:00
|
|
|
|
|
|
|
switch (r_ctl) {
|
|
|
|
case FC_RCTL_BA_ACC:
|
|
|
|
/*
|
|
|
|
* Dont release this cmd yet. It will be relesed
|
|
|
|
* after we get RRQ response
|
|
|
|
*/
|
|
|
|
BNX2FC_IO_DBG(io_req, "ABTS response - ACC Send RRQ\n");
|
|
|
|
issue_rrq = 1;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case FC_RCTL_BA_RJT:
|
|
|
|
BNX2FC_IO_DBG(io_req, "ABTS response - RJT\n");
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
printk(KERN_ERR PFX "Unknown ABTS response\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (issue_rrq) {
|
|
|
|
BNX2FC_IO_DBG(io_req, "Issue RRQ after R_A_TOV\n");
|
|
|
|
set_bit(BNX2FC_FLAG_ISSUE_RRQ, &io_req->req_flags);
|
|
|
|
}
|
|
|
|
set_bit(BNX2FC_FLAG_RETIRE_OXID, &io_req->req_flags);
|
|
|
|
bnx2fc_cmd_timer_set(io_req, r_a_tov);
|
|
|
|
|
|
|
|
io_compl:
|
|
|
|
if (io_req->wait_for_comp) {
|
|
|
|
if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT,
|
|
|
|
&io_req->req_flags))
|
|
|
|
complete(&io_req->tm_done);
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* We end up here when ABTS is issued as
|
|
|
|
* in asynchronous context, i.e., as part
|
|
|
|
* of task management completion, or
|
|
|
|
* when FW error is received or when the
|
|
|
|
* ABTS is issued when the IO is timed
|
|
|
|
* out.
|
|
|
|
*/
|
|
|
|
|
|
|
|
if (io_req->on_active_queue) {
|
|
|
|
list_del_init(&io_req->link);
|
|
|
|
io_req->on_active_queue = 0;
|
|
|
|
/* Move IO req to retire queue */
|
|
|
|
list_add_tail(&io_req->link, &tgt->io_retire_queue);
|
|
|
|
}
|
|
|
|
bnx2fc_scsi_done(io_req, DID_ERROR);
|
|
|
|
kref_put(&io_req->refcount, bnx2fc_cmd_release);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void bnx2fc_lun_reset_cmpl(struct bnx2fc_cmd *io_req)
|
|
|
|
{
|
|
|
|
struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
|
|
|
|
struct bnx2fc_rport *tgt = io_req->tgt;
|
2012-06-07 03:19:36 -06:00
|
|
|
struct bnx2fc_cmd *cmd, *tmp;
|
2011-02-04 13:10:34 -07:00
|
|
|
int tm_lun = sc_cmd->device->lun;
|
|
|
|
int rc = 0;
|
|
|
|
int lun;
|
|
|
|
|
|
|
|
/* called with tgt_lock held */
|
|
|
|
BNX2FC_IO_DBG(io_req, "Entered bnx2fc_lun_reset_cmpl\n");
|
|
|
|
/*
|
|
|
|
* Walk thru the active_ios queue and ABORT the IO
|
|
|
|
* that matches with the LUN that was reset
|
|
|
|
*/
|
2012-06-07 03:19:36 -06:00
|
|
|
list_for_each_entry_safe(cmd, tmp, &tgt->active_cmd_queue, link) {
|
2011-02-04 13:10:34 -07:00
|
|
|
BNX2FC_TGT_DBG(tgt, "LUN RST cmpl: scan for pending IOs\n");
|
|
|
|
lun = cmd->sc_cmd->device->lun;
|
|
|
|
if (lun == tm_lun) {
|
|
|
|
/* Initiate ABTS on this cmd */
|
|
|
|
if (!test_and_set_bit(BNX2FC_FLAG_ISSUE_ABTS,
|
|
|
|
&cmd->req_flags)) {
|
|
|
|
/* cancel the IO timeout */
|
|
|
|
if (cancel_delayed_work(&io_req->timeout_work))
|
|
|
|
kref_put(&io_req->refcount,
|
|
|
|
bnx2fc_cmd_release);
|
|
|
|
/* timer hold */
|
|
|
|
rc = bnx2fc_initiate_abts(cmd);
|
2011-03-30 19:57:33 -06:00
|
|
|
/* abts shouldn't fail in this context */
|
2011-02-04 13:10:34 -07:00
|
|
|
WARN_ON(rc != SUCCESS);
|
|
|
|
} else
|
|
|
|
printk(KERN_ERR PFX "lun_rst: abts already in"
|
|
|
|
" progress for this IO 0x%x\n",
|
|
|
|
cmd->xid);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void bnx2fc_tgt_reset_cmpl(struct bnx2fc_cmd *io_req)
|
|
|
|
{
|
|
|
|
struct bnx2fc_rport *tgt = io_req->tgt;
|
2012-06-07 03:19:36 -06:00
|
|
|
struct bnx2fc_cmd *cmd, *tmp;
|
2011-02-04 13:10:34 -07:00
|
|
|
int rc = 0;
|
|
|
|
|
|
|
|
/* called with tgt_lock held */
|
|
|
|
BNX2FC_IO_DBG(io_req, "Entered bnx2fc_tgt_reset_cmpl\n");
|
|
|
|
/*
|
|
|
|
* Walk thru the active_ios queue and ABORT the IO
|
|
|
|
* that matches with the LUN that was reset
|
|
|
|
*/
|
2012-06-07 03:19:36 -06:00
|
|
|
list_for_each_entry_safe(cmd, tmp, &tgt->active_cmd_queue, link) {
|
2011-02-04 13:10:34 -07:00
|
|
|
BNX2FC_TGT_DBG(tgt, "TGT RST cmpl: scan for pending IOs\n");
|
|
|
|
/* Initiate ABTS */
|
|
|
|
if (!test_and_set_bit(BNX2FC_FLAG_ISSUE_ABTS,
|
|
|
|
&cmd->req_flags)) {
|
|
|
|
/* cancel the IO timeout */
|
|
|
|
if (cancel_delayed_work(&io_req->timeout_work))
|
|
|
|
kref_put(&io_req->refcount,
|
|
|
|
bnx2fc_cmd_release); /* timer hold */
|
|
|
|
rc = bnx2fc_initiate_abts(cmd);
|
2011-03-30 19:57:33 -06:00
|
|
|
/* abts shouldn't fail in this context */
|
2011-02-04 13:10:34 -07:00
|
|
|
WARN_ON(rc != SUCCESS);
|
|
|
|
|
|
|
|
} else
|
|
|
|
printk(KERN_ERR PFX "tgt_rst: abts already in progress"
|
|
|
|
" for this IO 0x%x\n", cmd->xid);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void bnx2fc_process_tm_compl(struct bnx2fc_cmd *io_req,
|
|
|
|
struct fcoe_task_ctx_entry *task, u8 num_rq)
|
|
|
|
{
|
|
|
|
struct bnx2fc_mp_req *tm_req;
|
|
|
|
struct fc_frame_header *fc_hdr;
|
|
|
|
struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
|
|
|
|
u64 *hdr;
|
|
|
|
u64 *temp_hdr;
|
|
|
|
void *rsp_buf;
|
|
|
|
|
|
|
|
/* Called with tgt_lock held */
|
|
|
|
BNX2FC_IO_DBG(io_req, "Entered process_tm_compl\n");
|
|
|
|
|
|
|
|
if (!(test_bit(BNX2FC_FLAG_TM_TIMEOUT, &io_req->req_flags)))
|
|
|
|
set_bit(BNX2FC_FLAG_TM_COMPL, &io_req->req_flags);
|
|
|
|
else {
|
|
|
|
/* TM has already timed out and we got
|
|
|
|
* delayed completion. Ignore completion
|
|
|
|
* processing.
|
|
|
|
*/
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
tm_req = &(io_req->mp_req);
|
|
|
|
fc_hdr = &(tm_req->resp_fc_hdr);
|
|
|
|
hdr = (u64 *)fc_hdr;
|
|
|
|
temp_hdr = (u64 *)
|
2011-06-14 05:33:44 -06:00
|
|
|
&task->rxwr_only.union_ctx.comp_info.mp_rsp.fc_hdr;
|
2011-02-04 13:10:34 -07:00
|
|
|
hdr[0] = cpu_to_be64(temp_hdr[0]);
|
|
|
|
hdr[1] = cpu_to_be64(temp_hdr[1]);
|
|
|
|
hdr[2] = cpu_to_be64(temp_hdr[2]);
|
|
|
|
|
2011-06-14 05:33:44 -06:00
|
|
|
tm_req->resp_len =
|
|
|
|
task->rxwr_only.union_ctx.comp_info.mp_rsp.mp_payload_len;
|
2011-02-04 13:10:34 -07:00
|
|
|
|
|
|
|
rsp_buf = tm_req->resp_buf;
|
|
|
|
|
|
|
|
if (fc_hdr->fh_r_ctl == FC_RCTL_DD_CMD_STATUS) {
|
|
|
|
bnx2fc_parse_fcp_rsp(io_req,
|
|
|
|
(struct fcoe_fcp_rsp_payload *)
|
|
|
|
rsp_buf, num_rq);
|
|
|
|
if (io_req->fcp_rsp_code == 0) {
|
|
|
|
/* TM successful */
|
|
|
|
if (tm_req->tm_flags & FCP_TMF_LUN_RESET)
|
|
|
|
bnx2fc_lun_reset_cmpl(io_req);
|
|
|
|
else if (tm_req->tm_flags & FCP_TMF_TGT_RESET)
|
|
|
|
bnx2fc_tgt_reset_cmpl(io_req);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
printk(KERN_ERR PFX "tmf's fc_hdr r_ctl = 0x%x\n",
|
|
|
|
fc_hdr->fh_r_ctl);
|
|
|
|
}
|
|
|
|
if (!sc_cmd->SCp.ptr) {
|
2011-06-28 00:30:53 -06:00
|
|
|
printk(KERN_ERR PFX "tm_compl: SCp.ptr is NULL\n");
|
2011-02-04 13:10:34 -07:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
switch (io_req->fcp_status) {
|
|
|
|
case FC_GOOD:
|
|
|
|
if (io_req->cdb_status == 0) {
|
|
|
|
/* Good IO completion */
|
|
|
|
sc_cmd->result = DID_OK << 16;
|
|
|
|
} else {
|
|
|
|
/* Transport status is good, SCSI status not good */
|
|
|
|
sc_cmd->result = (DID_OK << 16) | io_req->cdb_status;
|
|
|
|
}
|
|
|
|
if (io_req->fcp_resid)
|
|
|
|
scsi_set_resid(sc_cmd, io_req->fcp_resid);
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
BNX2FC_IO_DBG(io_req, "process_tm_compl: fcp_status = %d\n",
|
|
|
|
io_req->fcp_status);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
sc_cmd = io_req->sc_cmd;
|
|
|
|
io_req->sc_cmd = NULL;
|
|
|
|
|
|
|
|
/* check if the io_req exists in tgt's tmf_q */
|
|
|
|
if (io_req->on_tmf_queue) {
|
|
|
|
|
|
|
|
list_del_init(&io_req->link);
|
|
|
|
io_req->on_tmf_queue = 0;
|
|
|
|
} else {
|
|
|
|
|
2011-06-28 00:30:53 -06:00
|
|
|
printk(KERN_ERR PFX "Command not on active_cmd_queue!\n");
|
2011-02-04 13:10:34 -07:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
sc_cmd->SCp.ptr = NULL;
|
|
|
|
sc_cmd->scsi_done(sc_cmd);
|
|
|
|
|
|
|
|
kref_put(&io_req->refcount, bnx2fc_cmd_release);
|
|
|
|
if (io_req->wait_for_comp) {
|
|
|
|
BNX2FC_IO_DBG(io_req, "tm_compl - wake up the waiter\n");
|
|
|
|
complete(&io_req->tm_done);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int bnx2fc_split_bd(struct bnx2fc_cmd *io_req, u64 addr, int sg_len,
|
|
|
|
int bd_index)
|
|
|
|
{
|
|
|
|
struct fcoe_bd_ctx *bd = io_req->bd_tbl->bd_tbl;
|
|
|
|
int frag_size, sg_frags;
|
|
|
|
|
|
|
|
sg_frags = 0;
|
|
|
|
while (sg_len) {
|
|
|
|
if (sg_len >= BNX2FC_BD_SPLIT_SZ)
|
|
|
|
frag_size = BNX2FC_BD_SPLIT_SZ;
|
|
|
|
else
|
|
|
|
frag_size = sg_len;
|
|
|
|
bd[bd_index + sg_frags].buf_addr_lo = addr & 0xffffffff;
|
|
|
|
bd[bd_index + sg_frags].buf_addr_hi = addr >> 32;
|
|
|
|
bd[bd_index + sg_frags].buf_len = (u16)frag_size;
|
|
|
|
bd[bd_index + sg_frags].flags = 0;
|
|
|
|
|
|
|
|
addr += (u64) frag_size;
|
|
|
|
sg_frags++;
|
|
|
|
sg_len -= frag_size;
|
|
|
|
}
|
|
|
|
return sg_frags;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
static int bnx2fc_map_sg(struct bnx2fc_cmd *io_req)
|
|
|
|
{
|
2011-09-19 17:52:12 -06:00
|
|
|
struct bnx2fc_interface *interface = io_req->port->priv;
|
|
|
|
struct bnx2fc_hba *hba = interface->hba;
|
2011-02-04 13:10:34 -07:00
|
|
|
struct scsi_cmnd *sc = io_req->sc_cmd;
|
|
|
|
struct fcoe_bd_ctx *bd = io_req->bd_tbl->bd_tbl;
|
|
|
|
struct scatterlist *sg;
|
|
|
|
int byte_count = 0;
|
|
|
|
int sg_count = 0;
|
|
|
|
int bd_count = 0;
|
|
|
|
int sg_frags;
|
|
|
|
unsigned int sg_len;
|
|
|
|
u64 addr;
|
|
|
|
int i;
|
|
|
|
|
2011-09-19 17:52:12 -06:00
|
|
|
sg_count = dma_map_sg(&hba->pcidev->dev, scsi_sglist(sc),
|
|
|
|
scsi_sg_count(sc), sc->sc_data_direction);
|
2011-02-04 13:10:34 -07:00
|
|
|
scsi_for_each_sg(sc, sg, sg_count, i) {
|
|
|
|
sg_len = sg_dma_len(sg);
|
|
|
|
addr = sg_dma_address(sg);
|
|
|
|
if (sg_len > BNX2FC_MAX_BD_LEN) {
|
|
|
|
sg_frags = bnx2fc_split_bd(io_req, addr, sg_len,
|
|
|
|
bd_count);
|
|
|
|
} else {
|
|
|
|
|
|
|
|
sg_frags = 1;
|
|
|
|
bd[bd_count].buf_addr_lo = addr & 0xffffffff;
|
|
|
|
bd[bd_count].buf_addr_hi = addr >> 32;
|
|
|
|
bd[bd_count].buf_len = (u16)sg_len;
|
|
|
|
bd[bd_count].flags = 0;
|
|
|
|
}
|
|
|
|
bd_count += sg_frags;
|
|
|
|
byte_count += sg_len;
|
|
|
|
}
|
|
|
|
if (byte_count != scsi_bufflen(sc))
|
|
|
|
printk(KERN_ERR PFX "byte_count = %d != scsi_bufflen = %d, "
|
|
|
|
"task_id = 0x%x\n", byte_count, scsi_bufflen(sc),
|
|
|
|
io_req->xid);
|
|
|
|
return bd_count;
|
|
|
|
}
|
|
|
|
|
2011-09-19 17:52:13 -06:00
|
|
|
static int bnx2fc_build_bd_list_from_sg(struct bnx2fc_cmd *io_req)
|
2011-02-04 13:10:34 -07:00
|
|
|
{
|
|
|
|
struct scsi_cmnd *sc = io_req->sc_cmd;
|
|
|
|
struct fcoe_bd_ctx *bd = io_req->bd_tbl->bd_tbl;
|
|
|
|
int bd_count;
|
|
|
|
|
2011-09-19 17:52:13 -06:00
|
|
|
if (scsi_sg_count(sc)) {
|
2011-02-04 13:10:34 -07:00
|
|
|
bd_count = bnx2fc_map_sg(io_req);
|
2011-09-19 17:52:13 -06:00
|
|
|
if (bd_count == 0)
|
|
|
|
return -ENOMEM;
|
|
|
|
} else {
|
2011-02-04 13:10:34 -07:00
|
|
|
bd_count = 0;
|
|
|
|
bd[0].buf_addr_lo = bd[0].buf_addr_hi = 0;
|
|
|
|
bd[0].buf_len = bd[0].flags = 0;
|
|
|
|
}
|
|
|
|
io_req->bd_tbl->bd_valid = bd_count;
|
2011-09-19 17:52:13 -06:00
|
|
|
|
|
|
|
return 0;
|
2011-02-04 13:10:34 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
static void bnx2fc_unmap_sg_list(struct bnx2fc_cmd *io_req)
|
|
|
|
{
|
|
|
|
struct scsi_cmnd *sc = io_req->sc_cmd;
|
|
|
|
|
|
|
|
if (io_req->bd_tbl->bd_valid && sc) {
|
|
|
|
scsi_dma_unmap(sc);
|
|
|
|
io_req->bd_tbl->bd_valid = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd *io_req,
|
|
|
|
struct fcp_cmnd *fcp_cmnd)
|
|
|
|
{
|
|
|
|
struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
|
|
|
|
char tag[2];
|
|
|
|
|
|
|
|
memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd));
|
|
|
|
|
2012-01-19 14:39:11 -07:00
|
|
|
int_to_scsilun(sc_cmd->device->lun, &fcp_cmnd->fc_lun);
|
2011-02-04 13:10:34 -07:00
|
|
|
|
|
|
|
fcp_cmnd->fc_dl = htonl(io_req->data_xfer_len);
|
|
|
|
memcpy(fcp_cmnd->fc_cdb, sc_cmd->cmnd, sc_cmd->cmd_len);
|
|
|
|
|
|
|
|
fcp_cmnd->fc_cmdref = 0;
|
|
|
|
fcp_cmnd->fc_pri_ta = 0;
|
|
|
|
fcp_cmnd->fc_tm_flags = io_req->mp_req.tm_flags;
|
|
|
|
fcp_cmnd->fc_flags = io_req->io_req_flags;
|
|
|
|
|
|
|
|
if (scsi_populate_tag_msg(sc_cmd, tag)) {
|
|
|
|
switch (tag[0]) {
|
|
|
|
case HEAD_OF_QUEUE_TAG:
|
|
|
|
fcp_cmnd->fc_pri_ta = FCP_PTA_HEADQ;
|
|
|
|
break;
|
|
|
|
case ORDERED_QUEUE_TAG:
|
|
|
|
fcp_cmnd->fc_pri_ta = FCP_PTA_ORDERED;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
fcp_cmnd->fc_pri_ta = FCP_PTA_SIMPLE;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
fcp_cmnd->fc_pri_ta = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void bnx2fc_parse_fcp_rsp(struct bnx2fc_cmd *io_req,
|
|
|
|
struct fcoe_fcp_rsp_payload *fcp_rsp,
|
|
|
|
u8 num_rq)
|
|
|
|
{
|
|
|
|
struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
|
|
|
|
struct bnx2fc_rport *tgt = io_req->tgt;
|
|
|
|
u8 rsp_flags = fcp_rsp->fcp_flags.flags;
|
|
|
|
u32 rq_buff_len = 0;
|
|
|
|
int i;
|
|
|
|
unsigned char *rq_data;
|
|
|
|
unsigned char *dummy;
|
|
|
|
int fcp_sns_len = 0;
|
|
|
|
int fcp_rsp_len = 0;
|
|
|
|
|
|
|
|
io_req->fcp_status = FC_GOOD;
|
|
|
|
io_req->fcp_resid = fcp_rsp->fcp_resid;
|
|
|
|
|
|
|
|
io_req->scsi_comp_flags = rsp_flags;
|
|
|
|
CMD_SCSI_STATUS(sc_cmd) = io_req->cdb_status =
|
|
|
|
fcp_rsp->scsi_status_code;
|
|
|
|
|
|
|
|
/* Fetch fcp_rsp_info and fcp_sns_info if available */
|
|
|
|
if (num_rq) {
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We do not anticipate num_rq >1, as the linux defined
|
|
|
|
* SCSI_SENSE_BUFFERSIZE is 96 bytes + 8 bytes of FCP_RSP_INFO
|
|
|
|
* 256 bytes of single rq buffer is good enough to hold this.
|
|
|
|
*/
|
|
|
|
|
|
|
|
if (rsp_flags &
|
|
|
|
FCOE_FCP_RSP_FLAGS_FCP_RSP_LEN_VALID) {
|
|
|
|
fcp_rsp_len = rq_buff_len
|
|
|
|
= fcp_rsp->fcp_rsp_len;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (rsp_flags &
|
|
|
|
FCOE_FCP_RSP_FLAGS_FCP_SNS_LEN_VALID) {
|
|
|
|
fcp_sns_len = fcp_rsp->fcp_sns_len;
|
|
|
|
rq_buff_len += fcp_rsp->fcp_sns_len;
|
|
|
|
}
|
|
|
|
|
|
|
|
io_req->fcp_rsp_len = fcp_rsp_len;
|
|
|
|
io_req->fcp_sns_len = fcp_sns_len;
|
|
|
|
|
|
|
|
if (rq_buff_len > num_rq * BNX2FC_RQ_BUF_SZ) {
|
|
|
|
/* Invalid sense sense length. */
|
2011-06-28 00:30:53 -06:00
|
|
|
printk(KERN_ERR PFX "invalid sns length %d\n",
|
2011-02-04 13:10:34 -07:00
|
|
|
rq_buff_len);
|
|
|
|
/* reset rq_buff_len */
|
|
|
|
rq_buff_len = num_rq * BNX2FC_RQ_BUF_SZ;
|
|
|
|
}
|
|
|
|
|
|
|
|
rq_data = bnx2fc_get_next_rqe(tgt, 1);
|
|
|
|
|
|
|
|
if (num_rq > 1) {
|
|
|
|
/* We do not need extra sense data */
|
|
|
|
for (i = 1; i < num_rq; i++)
|
|
|
|
dummy = bnx2fc_get_next_rqe(tgt, 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* fetch fcp_rsp_code */
|
|
|
|
if ((fcp_rsp_len == 4) || (fcp_rsp_len == 8)) {
|
|
|
|
/* Only for task management function */
|
|
|
|
io_req->fcp_rsp_code = rq_data[3];
|
|
|
|
printk(KERN_ERR PFX "fcp_rsp_code = %d\n",
|
|
|
|
io_req->fcp_rsp_code);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* fetch sense data */
|
|
|
|
rq_data += fcp_rsp_len;
|
|
|
|
|
|
|
|
if (fcp_sns_len > SCSI_SENSE_BUFFERSIZE) {
|
|
|
|
printk(KERN_ERR PFX "Truncating sense buffer\n");
|
|
|
|
fcp_sns_len = SCSI_SENSE_BUFFERSIZE;
|
|
|
|
}
|
|
|
|
|
2012-09-03 12:50:30 -06:00
|
|
|
memset(sc_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
|
2011-02-04 13:10:34 -07:00
|
|
|
if (fcp_sns_len)
|
|
|
|
memcpy(sc_cmd->sense_buffer, rq_data, fcp_sns_len);
|
|
|
|
|
|
|
|
/* return RQ entries */
|
|
|
|
for (i = 0; i < num_rq; i++)
|
|
|
|
bnx2fc_return_rqe(tgt, 1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* bnx2fc_queuecommand - Queuecommand function of the scsi template
|
|
|
|
*
|
|
|
|
* @host: The Scsi_Host the command was issued to
|
|
|
|
* @sc_cmd: struct scsi_cmnd to be executed
|
|
|
|
*
|
|
|
|
* This is the IO strategy routine, called by SCSI-ML
|
|
|
|
**/
|
|
|
|
int bnx2fc_queuecommand(struct Scsi_Host *host,
|
|
|
|
struct scsi_cmnd *sc_cmd)
|
|
|
|
{
|
|
|
|
struct fc_lport *lport = shost_priv(host);
|
|
|
|
struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
|
|
|
|
struct fc_rport_libfc_priv *rp = rport->dd_data;
|
|
|
|
struct bnx2fc_rport *tgt;
|
|
|
|
struct bnx2fc_cmd *io_req;
|
|
|
|
int rc = 0;
|
|
|
|
int rval;
|
|
|
|
|
|
|
|
rval = fc_remote_port_chkready(rport);
|
|
|
|
if (rval) {
|
|
|
|
sc_cmd->result = rval;
|
|
|
|
sc_cmd->scsi_done(sc_cmd);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) {
|
|
|
|
rc = SCSI_MLQUEUE_HOST_BUSY;
|
|
|
|
goto exit_qcmd;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* rport and tgt are allocated together, so tgt should be non-NULL */
|
|
|
|
tgt = (struct bnx2fc_rport *)&rp[1];
|
|
|
|
|
|
|
|
if (!test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags)) {
|
|
|
|
/*
|
|
|
|
* Session is not offloaded yet. Let SCSI-ml retry
|
|
|
|
* the command.
|
|
|
|
*/
|
|
|
|
rc = SCSI_MLQUEUE_TARGET_BUSY;
|
|
|
|
goto exit_qcmd;
|
|
|
|
}
|
|
|
|
|
|
|
|
io_req = bnx2fc_cmd_alloc(tgt);
|
|
|
|
if (!io_req) {
|
|
|
|
rc = SCSI_MLQUEUE_HOST_BUSY;
|
|
|
|
goto exit_qcmd;
|
|
|
|
}
|
|
|
|
io_req->sc_cmd = sc_cmd;
|
|
|
|
|
|
|
|
if (bnx2fc_post_io_req(tgt, io_req)) {
|
|
|
|
printk(KERN_ERR PFX "Unable to post io_req\n");
|
|
|
|
rc = SCSI_MLQUEUE_HOST_BUSY;
|
|
|
|
goto exit_qcmd;
|
|
|
|
}
|
|
|
|
exit_qcmd:
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
void bnx2fc_process_scsi_cmd_compl(struct bnx2fc_cmd *io_req,
|
|
|
|
struct fcoe_task_ctx_entry *task,
|
|
|
|
u8 num_rq)
|
|
|
|
{
|
|
|
|
struct fcoe_fcp_rsp_payload *fcp_rsp;
|
|
|
|
struct bnx2fc_rport *tgt = io_req->tgt;
|
|
|
|
struct scsi_cmnd *sc_cmd;
|
|
|
|
struct Scsi_Host *host;
|
|
|
|
|
|
|
|
|
|
|
|
/* scsi_cmd_cmpl is called with tgt lock held */
|
|
|
|
|
|
|
|
if (test_and_set_bit(BNX2FC_FLAG_IO_COMPL, &io_req->req_flags)) {
|
|
|
|
/* we will not receive ABTS response for this IO */
|
|
|
|
BNX2FC_IO_DBG(io_req, "Timer context finished processing "
|
|
|
|
"this scsi cmd\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Cancel the timeout_work, as we received IO completion */
|
|
|
|
if (cancel_delayed_work(&io_req->timeout_work))
|
|
|
|
kref_put(&io_req->refcount,
|
|
|
|
bnx2fc_cmd_release); /* drop timer hold */
|
|
|
|
|
|
|
|
sc_cmd = io_req->sc_cmd;
|
|
|
|
if (sc_cmd == NULL) {
|
|
|
|
printk(KERN_ERR PFX "scsi_cmd_compl - sc_cmd is NULL\n");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Fetch fcp_rsp from task context and perform cmd completion */
|
|
|
|
fcp_rsp = (struct fcoe_fcp_rsp_payload *)
|
2011-06-14 05:33:44 -06:00
|
|
|
&(task->rxwr_only.union_ctx.comp_info.fcp_rsp.payload);
|
2011-02-04 13:10:34 -07:00
|
|
|
|
|
|
|
/* parse fcp_rsp and obtain sense data from RQ if available */
|
|
|
|
bnx2fc_parse_fcp_rsp(io_req, fcp_rsp, num_rq);
|
|
|
|
|
|
|
|
host = sc_cmd->device->host;
|
|
|
|
if (!sc_cmd->SCp.ptr) {
|
|
|
|
printk(KERN_ERR PFX "SCp.ptr is NULL\n");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (io_req->on_active_queue) {
|
|
|
|
list_del_init(&io_req->link);
|
|
|
|
io_req->on_active_queue = 0;
|
|
|
|
/* Move IO req to retire queue */
|
|
|
|
list_add_tail(&io_req->link, &tgt->io_retire_queue);
|
|
|
|
} else {
|
|
|
|
/* This should not happen, but could have been pulled
|
|
|
|
* by bnx2fc_flush_active_ios(), or during a race
|
|
|
|
* between command abort and (late) completion.
|
|
|
|
*/
|
|
|
|
BNX2FC_IO_DBG(io_req, "xid not on active_cmd_queue\n");
|
|
|
|
if (io_req->wait_for_comp)
|
|
|
|
if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT,
|
|
|
|
&io_req->req_flags))
|
|
|
|
complete(&io_req->tm_done);
|
|
|
|
}
|
|
|
|
|
|
|
|
bnx2fc_unmap_sg_list(io_req);
|
2011-05-27 12:47:26 -06:00
|
|
|
io_req->sc_cmd = NULL;
|
2011-02-04 13:10:34 -07:00
|
|
|
|
|
|
|
switch (io_req->fcp_status) {
|
|
|
|
case FC_GOOD:
|
|
|
|
if (io_req->cdb_status == 0) {
|
|
|
|
/* Good IO completion */
|
|
|
|
sc_cmd->result = DID_OK << 16;
|
|
|
|
} else {
|
|
|
|
/* Transport status is good, SCSI status not good */
|
|
|
|
BNX2FC_IO_DBG(io_req, "scsi_cmpl: cdb_status = %d"
|
|
|
|
" fcp_resid = 0x%x\n",
|
|
|
|
io_req->cdb_status, io_req->fcp_resid);
|
|
|
|
sc_cmd->result = (DID_OK << 16) | io_req->cdb_status;
|
|
|
|
}
|
|
|
|
if (io_req->fcp_resid)
|
|
|
|
scsi_set_resid(sc_cmd, io_req->fcp_resid);
|
|
|
|
break;
|
|
|
|
default:
|
2011-06-28 00:30:53 -06:00
|
|
|
printk(KERN_ERR PFX "scsi_cmd_compl: fcp_status = %d\n",
|
2011-02-04 13:10:34 -07:00
|
|
|
io_req->fcp_status);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
sc_cmd->SCp.ptr = NULL;
|
|
|
|
sc_cmd->scsi_done(sc_cmd);
|
|
|
|
kref_put(&io_req->refcount, bnx2fc_cmd_release);
|
|
|
|
}
|
|
|
|
|
2011-07-27 12:32:06 -06:00
|
|
|
int bnx2fc_post_io_req(struct bnx2fc_rport *tgt,
|
2011-02-04 13:10:34 -07:00
|
|
|
struct bnx2fc_cmd *io_req)
|
|
|
|
{
|
|
|
|
struct fcoe_task_ctx_entry *task;
|
|
|
|
struct fcoe_task_ctx_entry *task_page;
|
|
|
|
struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
|
|
|
|
struct fcoe_port *port = tgt->port;
|
2011-07-26 15:51:39 -06:00
|
|
|
struct bnx2fc_interface *interface = port->priv;
|
|
|
|
struct bnx2fc_hba *hba = interface->hba;
|
2011-02-04 13:10:34 -07:00
|
|
|
struct fc_lport *lport = port->lport;
|
2012-05-25 11:26:43 -06:00
|
|
|
struct fc_stats *stats;
|
2011-02-04 13:10:34 -07:00
|
|
|
int task_idx, index;
|
|
|
|
u16 xid;
|
|
|
|
|
|
|
|
/* Initialize rest of io_req fields */
|
|
|
|
io_req->cmd_type = BNX2FC_SCSI_CMD;
|
|
|
|
io_req->port = port;
|
|
|
|
io_req->tgt = tgt;
|
|
|
|
io_req->data_xfer_len = scsi_bufflen(sc_cmd);
|
|
|
|
sc_cmd->SCp.ptr = (char *)io_req;
|
|
|
|
|
2012-05-25 11:26:43 -06:00
|
|
|
stats = per_cpu_ptr(lport->stats, get_cpu());
|
2011-02-04 13:10:34 -07:00
|
|
|
if (sc_cmd->sc_data_direction == DMA_FROM_DEVICE) {
|
|
|
|
io_req->io_req_flags = BNX2FC_READ;
|
|
|
|
stats->InputRequests++;
|
|
|
|
stats->InputBytes += io_req->data_xfer_len;
|
|
|
|
} else if (sc_cmd->sc_data_direction == DMA_TO_DEVICE) {
|
|
|
|
io_req->io_req_flags = BNX2FC_WRITE;
|
|
|
|
stats->OutputRequests++;
|
|
|
|
stats->OutputBytes += io_req->data_xfer_len;
|
|
|
|
} else {
|
|
|
|
io_req->io_req_flags = 0;
|
|
|
|
stats->ControlRequests++;
|
|
|
|
}
|
|
|
|
put_cpu();
|
|
|
|
|
|
|
|
xid = io_req->xid;
|
|
|
|
|
|
|
|
/* Build buffer descriptor list for firmware from sg list */
|
2011-09-19 17:52:13 -06:00
|
|
|
if (bnx2fc_build_bd_list_from_sg(io_req)) {
|
|
|
|
printk(KERN_ERR PFX "BD list creation failed\n");
|
|
|
|
spin_lock_bh(&tgt->tgt_lock);
|
|
|
|
kref_put(&io_req->refcount, bnx2fc_cmd_release);
|
|
|
|
spin_unlock_bh(&tgt->tgt_lock);
|
|
|
|
return -EAGAIN;
|
|
|
|
}
|
2011-02-04 13:10:34 -07:00
|
|
|
|
|
|
|
task_idx = xid / BNX2FC_TASKS_PER_PAGE;
|
|
|
|
index = xid % BNX2FC_TASKS_PER_PAGE;
|
|
|
|
|
|
|
|
/* Initialize task context for this IO request */
|
|
|
|
task_page = (struct fcoe_task_ctx_entry *) hba->task_ctx[task_idx];
|
|
|
|
task = &(task_page[index]);
|
|
|
|
bnx2fc_init_task(io_req, task);
|
|
|
|
|
|
|
|
spin_lock_bh(&tgt->tgt_lock);
|
|
|
|
|
|
|
|
if (tgt->flush_in_prog) {
|
|
|
|
printk(KERN_ERR PFX "Flush in progress..Host Busy\n");
|
|
|
|
kref_put(&io_req->refcount, bnx2fc_cmd_release);
|
|
|
|
spin_unlock_bh(&tgt->tgt_lock);
|
|
|
|
return -EAGAIN;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags)) {
|
|
|
|
printk(KERN_ERR PFX "Session not ready...post_io\n");
|
|
|
|
kref_put(&io_req->refcount, bnx2fc_cmd_release);
|
|
|
|
spin_unlock_bh(&tgt->tgt_lock);
|
|
|
|
return -EAGAIN;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Time IO req */
|
2011-07-26 15:51:40 -06:00
|
|
|
if (tgt->io_timeout)
|
|
|
|
bnx2fc_cmd_timer_set(io_req, BNX2FC_IO_TIMEOUT);
|
2011-02-04 13:10:34 -07:00
|
|
|
/* Obtain free SQ entry */
|
|
|
|
bnx2fc_add_2_sq(tgt, xid);
|
|
|
|
|
|
|
|
/* Enqueue the io_req to active_cmd_queue */
|
|
|
|
|
|
|
|
io_req->on_active_queue = 1;
|
|
|
|
/* move io_req from pending_queue to active_queue */
|
|
|
|
list_add_tail(&io_req->link, &tgt->active_cmd_queue);
|
|
|
|
|
|
|
|
/* Ring doorbell */
|
|
|
|
bnx2fc_ring_doorbell(tgt);
|
|
|
|
spin_unlock_bh(&tgt->tgt_lock);
|
|
|
|
return 0;
|
|
|
|
}
|