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scsi: qedf: Modify abort and tmf handler to handle edge condition and flush

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An I/O can be in any state when flush is called, it can be in abort,
waiting for abort, RRQ send and waiting or TMF send.

 - HZ can be different on different architecture, correctly set abort
   timeout value.

 - Flush can complete the I/Os prematurely, handle refcount for aborted
   I/Os and for which RRQ is pending.

 - Differentiate LUN/TARGET reset, as cleanup needs to be send to firmware
   accordingly.

 - Add flush mutex to sync cleanup call from abort and flush routine.

 - Clear abort/outstanding bit on timeout.

Signed-off-by: Shyam Sundar <shyam.sundar@marvell.com>
Signed-off-by: Chad Dupuis <cdupuis@marvell.com>
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Saurav Kashyap 2019-03-26 00:38:38 -07:00 committed by Martin K. Petersen
parent 5d5e55659b
commit 69ef2c6925
4 changed files with 276 additions and 67 deletions
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10
drivers/scsi/qedf/qedf.h
View File

@ -49,8 +49,8 @@
sizeof(struct fc_frame_header))
#define QEDF_MAX_NPIV 64
#define QEDF_TM_TIMEOUT 10
#define QEDF_ABORT_TIMEOUT 10
#define QEDF_CLEANUP_TIMEOUT 10
#define QEDF_ABORT_TIMEOUT (10 * 1000)
#define QEDF_CLEANUP_TIMEOUT 1
#define QEDF_MAX_CDB_LEN 16
#define UPSTREAM_REMOVE 1
@ -82,6 +82,7 @@ struct qedf_els_cb_arg {
};
enum qedf_ioreq_event {
QEDF_IOREQ_EV_NONE,
QEDF_IOREQ_EV_ABORT_SUCCESS,
QEDF_IOREQ_EV_ABORT_FAILED,
QEDF_IOREQ_EV_SEND_RRQ,
@ -182,7 +183,10 @@ struct qedf_rport {
#define QEDF_RPORT_SESSION_READY 1
#define QEDF_RPORT_UPLOADING_CONNECTION 2
#define QEDF_RPORT_IN_RESET 3
#define QEDF_RPORT_IN_LUN_RESET 4
#define QEDF_RPORT_IN_TARGET_RESET 5
unsigned long flags;
int lun_reset_lun;
unsigned long retry_delay_timestamp;
struct fc_rport *rport;
struct fc_rport_priv *rdata;
@ -395,6 +399,8 @@ struct qedf_ctx {
u8 target_resets;
u8 task_set_fulls;
u8 busy;
/* Used for flush routine */
struct mutex flush_mutex;
};
struct io_bdt {

31
drivers/scsi/qedf/qedf_els.c
View File

@ -201,8 +201,12 @@ static void qedf_rrq_compl(struct qedf_els_cb_arg *cb_arg)
" orig xid = 0x%x, rrq_xid = 0x%x, refcount=%d\n",
orig_io_req, orig_io_req->xid, rrq_req->xid, refcount);
/* This should return the aborted io_req to the command pool */
if (orig_io_req)
/*
* This should return the aborted io_req to the command pool. Note that
* we need to check the refcound in case the original request was
* flushed but we get a completion on this xid.
*/
if (orig_io_req && refcount > 0)
kref_put(&orig_io_req->refcount, qedf_release_cmd);
out_free:
@ -229,6 +233,7 @@ int qedf_send_rrq(struct qedf_ioreq *aborted_io_req)
uint32_t sid;
uint32_t r_a_tov;
int rc;
int refcount;
if (!aborted_io_req) {
QEDF_ERR(NULL, "abort_io_req is NULL.\n");
@ -237,6 +242,15 @@ int qedf_send_rrq(struct qedf_ioreq *aborted_io_req)
fcport = aborted_io_req->fcport;
if (!fcport) {
refcount = kref_read(&aborted_io_req->refcount);
QEDF_ERR(NULL,
"RRQ work was queued prior to a flush xid=0x%x, refcount=%d.\n",
aborted_io_req->xid, refcount);
kref_put(&aborted_io_req->refcount, qedf_release_cmd);
return -EINVAL;
}
/* Check that fcport is still offloaded */
if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
QEDF_ERR(NULL, "fcport is no longer offloaded.\n");
@ -249,6 +263,19 @@ int qedf_send_rrq(struct qedf_ioreq *aborted_io_req)
}
qedf = fcport->qedf;
/*
* Sanity check that we can send a RRQ to make sure that refcount isn't
* 0
*/
refcount = kref_read(&aborted_io_req->refcount);
if (refcount != 1) {
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_ELS,
"refcount for xid=%x io_req=%p refcount=%d is not 1.\n",
aborted_io_req->xid, aborted_io_req, refcount);
return -EINVAL;
}
lport = qedf->lport;
sid = fcport->sid;
r_a_tov = lport->r_a_tov;

178
drivers/scsi/qedf/qedf_io.c
View File

@ -43,8 +43,9 @@ static void qedf_cmd_timeout(struct work_struct *work)
switch (io_req->cmd_type) {
case QEDF_ABTS:
if (qedf == NULL) {
QEDF_INFO(NULL, QEDF_LOG_IO, "qedf is NULL for xid=0x%x.\n",
io_req->xid);
QEDF_INFO(NULL, QEDF_LOG_IO,
"qedf is NULL for ABTS xid=0x%x.\n",
io_req->xid);
return;
}
@ -61,6 +62,9 @@ static void qedf_cmd_timeout(struct work_struct *work)
*/
kref_put(&io_req->refcount, qedf_release_cmd);
/* Clear in abort bit now that we're done with the command */
clear_bit(QEDF_CMD_IN_ABORT, &io_req->flags);
/*
* Now that the original I/O and the ABTS are complete see
* if we need to reconnect to the target.
@ -68,6 +72,15 @@ static void qedf_cmd_timeout(struct work_struct *work)
qedf_restart_rport(fcport);
break;
case QEDF_ELS:
if (!qedf) {
QEDF_INFO(NULL, QEDF_LOG_IO,
"qedf is NULL for ELS xid=0x%x.\n",
io_req->xid);
return;
}
/* ELS request no longer outstanding since it timed out */
clear_bit(QEDF_CMD_OUTSTANDING, &io_req->flags);
kref_get(&io_req->refcount);
/*
* Don't attempt to clean an ELS timeout as any subseqeunt
@ -1137,6 +1150,19 @@ void qedf_scsi_completion(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
fcport = io_req->fcport;
/*
* When flush is active, let the cmds be completed from the cleanup
* context
*/
if (test_bit(QEDF_RPORT_IN_TARGET_RESET, &fcport->flags) ||
(test_bit(QEDF_RPORT_IN_LUN_RESET, &fcport->flags) &&
sc_cmd->device->lun == (u64)fcport->lun_reset_lun)) {
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
"Dropping good completion xid=0x%x as fcport is flushing",
io_req->xid);
return;
}
qedf_parse_fcp_rsp(io_req, fcp_rsp);
qedf_unmap_sg_list(qedf, io_req);
@ -1720,15 +1746,23 @@ int qedf_initiate_abts(struct qedf_ioreq *io_req, bool return_scsi_cmd_on_abts)
unsigned long flags;
struct fcoe_wqe *sqe;
u16 sqe_idx;
int refcount = 0;
/* Sanity check qedf_rport before dereferencing any pointers */
if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
QEDF_ERR(NULL, "tgt not offloaded\n");
rc = 1;
goto abts_err;
goto out;
}
rdata = fcport->rdata;
if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
QEDF_ERR(&qedf->dbg_ctx, "stale rport\n");
rc = 1;
goto out;
}
r_a_tov = rdata->r_a_tov;
qedf = fcport->qedf;
lport = qedf->lport;
@ -1736,20 +1770,20 @@ int qedf_initiate_abts(struct qedf_ioreq *io_req, bool return_scsi_cmd_on_abts)
if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
QEDF_ERR(&(qedf->dbg_ctx), "link is not ready\n");
rc = 1;
goto abts_err;
goto out;
}
if (atomic_read(&qedf->link_down_tmo_valid) > 0) {
QEDF_ERR(&(qedf->dbg_ctx), "link_down_tmo active.\n");
rc = 1;
goto abts_err;
goto out;
}
/* Ensure room on SQ */
if (!atomic_read(&fcport->free_sqes)) {
QEDF_ERR(&(qedf->dbg_ctx), "No SQ entries available\n");
rc = 1;
goto abts_err;
goto out;
}
if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
@ -1774,18 +1808,17 @@ int qedf_initiate_abts(struct qedf_ioreq *io_req, bool return_scsi_cmd_on_abts)
qedf->control_requests++;
qedf->packet_aborts++;
/* Set the return CPU to be the same as the request one */
io_req->cpu = smp_processor_id();
/* Set the command type to abort */
io_req->cmd_type = QEDF_ABTS;
io_req->return_scsi_cmd_on_abts = return_scsi_cmd_on_abts;
set_bit(QEDF_CMD_IN_ABORT, &io_req->flags);
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_SCSI_TM, "ABTS io_req xid = "
"0x%x\n", xid);
refcount = kref_read(&io_req->refcount);
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_SCSI_TM,
"ABTS io_req xid = 0x%x refcount=%d\n",
xid, refcount);
qedf_cmd_timer_set(qedf, io_req, QEDF_ABORT_TIMEOUT * HZ);
qedf_cmd_timer_set(qedf, io_req, QEDF_ABORT_TIMEOUT);
spin_lock_irqsave(&fcport->rport_lock, flags);
@ -1799,13 +1832,6 @@ int qedf_initiate_abts(struct qedf_ioreq *io_req, bool return_scsi_cmd_on_abts)
spin_unlock_irqrestore(&fcport->rport_lock, flags);
return rc;
abts_err:
/*
* If the ABTS task fails to queue then we need to cleanup the
* task at the firmware.
*/
qedf_initiate_cleanup(io_req, return_scsi_cmd_on_abts);
out:
return rc;
}
@ -1815,25 +1841,59 @@ void qedf_process_abts_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
{
uint32_t r_ctl;
uint16_t xid;
int rc;
struct qedf_rport *fcport = io_req->fcport;
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_SCSI_TM, "Entered with xid = "
"0x%x cmd_type = %d\n", io_req->xid, io_req->cmd_type);
cancel_delayed_work(&io_req->timeout_work);
xid = io_req->xid;
r_ctl = cqe->cqe_info.abts_info.r_ctl;
/* This was added at a point when we were scheduling abts_compl &
* cleanup_compl on different CPUs and there was a possibility of
* the io_req to be freed from the other context before we got here.
*/
if (!fcport) {
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
"Dropping ABTS completion xid=0x%x as fcport is NULL",
io_req->xid);
return;
}
/*
* When flush is active, let the cmds be completed from the cleanup
* context
*/
if (test_bit(QEDF_RPORT_IN_TARGET_RESET, &fcport->flags) ||
test_bit(QEDF_RPORT_IN_LUN_RESET, &fcport->flags)) {
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO,
"Dropping ABTS completion xid=0x%x as fcport is flushing",
io_req->xid);
return;
}
if (!cancel_delayed_work(&io_req->timeout_work)) {
QEDF_ERR(&qedf->dbg_ctx,
"Wasn't able to cancel abts timeout work.\n");
}
switch (r_ctl) {
case FC_RCTL_BA_ACC:
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_SCSI_TM,
"ABTS response - ACC Send RRQ after R_A_TOV\n");
io_req->event = QEDF_IOREQ_EV_ABORT_SUCCESS;
rc = kref_get_unless_zero(&io_req->refcount);
if (!rc) {
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_SCSI_TM,
"kref is already zero so ABTS was already completed or flushed xid=0x%x.\n",
io_req->xid);
return;
}
/*
* Dont release this cmd yet. It will be relesed
* after we get RRQ response
*/
kref_get(&io_req->refcount);
queue_delayed_work(qedf->dpc_wq, &io_req->rrq_work,
msecs_to_jiffies(qedf->lport->r_a_tov));
break;
@ -2106,6 +2166,7 @@ static int qedf_execute_tmf(struct qedf_rport *fcport, struct scsi_cmnd *sc_cmd,
int rc = 0;
uint16_t xid;
int tmo = 0;
int lun = 0;
unsigned long flags;
struct fcoe_wqe *sqe;
u16 sqe_idx;
@ -2115,6 +2176,7 @@ static int qedf_execute_tmf(struct qedf_rport *fcport, struct scsi_cmnd *sc_cmd,
return FAILED;
}
lun = (int)sc_cmd->device->lun;
if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
QEDF_ERR(&(qedf->dbg_ctx), "fcport not offloaded\n");
rc = FAILED;
@ -2141,7 +2203,7 @@ static int qedf_execute_tmf(struct qedf_rport *fcport, struct scsi_cmnd *sc_cmd,
io_req->fcport = fcport;
io_req->cmd_type = QEDF_TASK_MGMT_CMD;
/* Set the return CPU to be the same as the request one */
/* Record which cpu this request is associated with */
io_req->cpu = smp_processor_id();
/* Set TM flags */
@ -2150,7 +2212,7 @@ static int qedf_execute_tmf(struct qedf_rport *fcport, struct scsi_cmnd *sc_cmd,
io_req->tm_flags = tm_flags;
/* Default is to return a SCSI command when an error occurs */
io_req->return_scsi_cmd_on_abts = true;
io_req->return_scsi_cmd_on_abts = false;
/* Obtain exchange id */
xid = io_req->xid;
@ -2174,12 +2236,16 @@ static int qedf_execute_tmf(struct qedf_rport *fcport, struct scsi_cmnd *sc_cmd,
spin_unlock_irqrestore(&fcport->rport_lock, flags);
set_bit(QEDF_CMD_OUTSTANDING, &io_req->flags);
tmo = wait_for_completion_timeout(&io_req->tm_done,
QEDF_TM_TIMEOUT * HZ);
if (!tmo) {
rc = FAILED;
QEDF_ERR(&(qedf->dbg_ctx), "wait for tm_cmpl timeout!\n");
/* Clear outstanding bit since command timed out */
clear_bit(QEDF_CMD_OUTSTANDING, &io_req->flags);
io_req->sc_cmd = NULL;
} else {
/* Check TMF response code */
if (io_req->fcp_rsp_code == 0)
@ -2187,14 +2253,25 @@ static int qedf_execute_tmf(struct qedf_rport *fcport, struct scsi_cmnd *sc_cmd,
else
rc = FAILED;
}
/*
* Double check that fcport has not gone into an uploading state before
* executing the command flush for the LUN/target.
*/
if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
QEDF_ERR(&qedf->dbg_ctx,
"fcport is uploading, not executing flush.\n");
goto no_flush;
}
/* We do not need this io_req any more */
kref_put(&io_req->refcount, qedf_release_cmd);
if (tm_flags == FCP_TMF_LUN_RESET)
qedf_flush_active_ios(fcport, (int)sc_cmd->device->lun);
qedf_flush_active_ios(fcport, lun);
else
qedf_flush_active_ios(fcport, -1);
kref_put(&io_req->refcount, qedf_release_cmd);
no_flush:
if (rc != SUCCESS) {
QEDF_ERR(&(qedf->dbg_ctx), "task mgmt command failed...\n");
rc = FAILED;
@ -2215,22 +2292,57 @@ int qedf_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags)
struct fc_lport *lport;
int rc = SUCCESS;
int rval;
struct qedf_ioreq *io_req = NULL;
int ref_cnt = 0;
struct fc_rport_priv *rdata = fcport->rdata;
QEDF_ERR(NULL,
"tm_flags 0x%x sc_cmd %p op = 0x%02x target_id = 0x%x lun=%d\n",
tm_flags, sc_cmd, sc_cmd->cmnd[0], rport->scsi_target_id,
(int)sc_cmd->device->lun);
if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
QEDF_ERR(NULL, "stale rport\n");
return FAILED;
}
QEDF_ERR(NULL, "portid=%06x tm_flags =%s\n", rdata->ids.port_id,
(tm_flags == FCP_TMF_TGT_RESET) ? "TARGET RESET" :
"LUN RESET");
if (sc_cmd->SCp.ptr) {
io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
ref_cnt = kref_read(&io_req->refcount);
QEDF_ERR(NULL,
"orig io_req = %p xid = 0x%x ref_cnt = %d.\n",
io_req, io_req->xid, ref_cnt);
}
rval = fc_remote_port_chkready(rport);
if (rval) {
QEDF_ERR(NULL, "device_reset rport not ready\n");
rc = FAILED;
goto tmf_err;
}
if (fcport == NULL) {
rc = fc_block_scsi_eh(sc_cmd);
if (rc)
return rc;
if (!fcport) {
QEDF_ERR(NULL, "device_reset: rport is NULL\n");
rc = FAILED;
goto tmf_err;
}
qedf = fcport->qedf;
if (!qedf) {
QEDF_ERR(NULL, "qedf is NULL.\n");
rc = FAILED;
goto tmf_err;
}
lport = qedf->lport;
if (test_bit(QEDF_UNLOADING, &qedf->flags) ||
@ -2245,6 +2357,12 @@ int qedf_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags)
goto tmf_err;
}
if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
QEDF_ERR(&qedf->dbg_ctx, "fcport is uploading.\n");
rc = FAILED;
goto tmf_err;
}
rc = qedf_execute_tmf(fcport, sc_cmd, tm_flags);
tmf_err:
@ -2256,6 +2374,8 @@ void qedf_process_tmf_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
{
struct fcoe_cqe_rsp_info *fcp_rsp;
clear_bit(QEDF_CMD_OUTSTANDING, &io_req->flags);
fcp_rsp = &cqe->cqe_info.rsp_info;
qedf_parse_fcp_rsp(io_req, fcp_rsp);

124
drivers/scsi/qedf/qedf_main.c
View File

@ -615,50 +615,113 @@ static struct scsi_transport_template *qedf_fc_vport_transport_template;
static int qedf_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 qedf_rport *fcport;
struct fc_lport *lport;
struct qedf_ctx *qedf;
struct qedf_ioreq *io_req;
struct fc_rport_libfc_priv *rp = rport->dd_data;
struct fc_rport_priv *rdata;
struct qedf_rport *fcport = NULL;
int rc = FAILED;
int wait_count = 100;
int refcount = 0;
int rval;
if (fc_remote_port_chkready(rport)) {
QEDF_ERR(NULL, "rport not ready\n");
goto out;
}
int got_ref = 0;
lport = shost_priv(sc_cmd->device->host);
qedf = (struct qedf_ctx *)lport_priv(lport);
if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) {
QEDF_ERR(&(qedf->dbg_ctx), "link not ready.\n");
/* rport and tgt are allocated together, so tgt should be non-NULL */
fcport = (struct qedf_rport *)&rp[1];
rdata = fcport->rdata;
if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd);
rc = 1;
goto out;
}
fcport = (struct qedf_rport *)&rp[1];
io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
if (!io_req) {
QEDF_ERR(&(qedf->dbg_ctx), "io_req is NULL.\n");
QEDF_ERR(&qedf->dbg_ctx,
"sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n",
sc_cmd, sc_cmd->cmnd[0],
rdata->ids.port_id);
rc = SUCCESS;
goto out;
goto drop_rdata_kref;
}
QEDF_ERR(&(qedf->dbg_ctx), "Aborting io_req sc_cmd=%p xid=0x%x "
"fp_idx=%d.\n", sc_cmd, io_req->xid, io_req->fp_idx);
rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */
if (rval)
got_ref = 1;
/* If we got a valid io_req, confirm it belongs to this sc_cmd. */
if (!rval || io_req->sc_cmd != sc_cmd) {
QEDF_ERR(&qedf->dbg_ctx,
"Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n",
io_req->sc_cmd, sc_cmd, rdata->ids.port_id);
goto drop_rdata_kref;
}
if (fc_remote_port_chkready(rport)) {
refcount = kref_read(&io_req->refcount);
QEDF_ERR(&qedf->dbg_ctx,
"rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n",
io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0],
refcount, rdata->ids.port_id);
goto drop_rdata_kref;
}
rc = fc_block_scsi_eh(sc_cmd);
if (rc)
goto drop_rdata_kref;
if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
QEDF_ERR(&qedf->dbg_ctx,
"Connection uploading, xid=0x%x., port_id=%06x\n",
io_req->xid, rdata->ids.port_id);
while (io_req->sc_cmd && (wait_count != 0)) {
msleep(100);
wait_count--;
}
if (wait_count) {
QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n");
rc = SUCCESS;
} else {
QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n");
rc = FAILED;
}
goto drop_rdata_kref;
}
if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n");
goto drop_rdata_kref;
}
QEDF_ERR(&qedf->dbg_ctx,
"Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n",
io_req, sc_cmd, io_req->xid, io_req->fp_idx,
rdata->ids.port_id);
if (qedf->stop_io_on_error) {
qedf_stop_all_io(qedf);
rc = SUCCESS;
goto out;
goto drop_rdata_kref;
}
init_completion(&io_req->abts_done);
rval = qedf_initiate_abts(io_req, true);
if (rval) {
QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
goto out;
/*
* If we fail to queue the ABTS then return this command to
* the SCSI layer as it will own and free the xid
*/
rc = SUCCESS;
qedf_scsi_done(qedf, io_req, DID_ERROR);
goto drop_rdata_kref;
}
wait_for_completion(&io_req->abts_done);
@ -684,19 +747,27 @@ static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
io_req->xid);
drop_rdata_kref:
kref_put(&rdata->kref, fc_rport_destroy);
out:
if (got_ref)
kref_put(&io_req->refcount, qedf_release_cmd);
return rc;
}
static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
{
QEDF_ERR(NULL, "TARGET RESET Issued...");
QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...",
sc_cmd->device->host->host_no, sc_cmd->device->id,
sc_cmd->device->lun);
return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
}
static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
{
QEDF_ERR(NULL, "LUN RESET Issued...\n");
QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ",
sc_cmd->device->host->host_no, sc_cmd->device->id,
sc_cmd->device->lun);
return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
}
@ -740,22 +811,6 @@ static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
{
struct fc_lport *lport;
struct qedf_ctx *qedf;
struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
struct fc_rport_libfc_priv *rp = rport->dd_data;
struct qedf_rport *fcport = (struct qedf_rport *)&rp[1];
int rval;
rval = fc_remote_port_chkready(rport);
if (rval) {
QEDF_ERR(NULL, "device_reset rport not ready\n");
return FAILED;
}
if (fcport == NULL) {
QEDF_ERR(NULL, "device_reset: rport is NULL\n");
return FAILED;
}
lport = shost_priv(sc_cmd->device->host);
qedf = lport_priv(lport);
@ -3007,6 +3062,7 @@ static int __qedf_probe(struct pci_dev *pdev, int mode)
pci_set_drvdata(pdev, qedf);
init_completion(&qedf->fipvlan_compl);
mutex_init(&qedf->stats_mutex);
mutex_init(&qedf->flush_mutex);
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
"QLogic FastLinQ FCoE Module qedf %s, "