Block the SCSI host while reconnecting instead of representing the reconnect activity as a distinct SRP target state.
Signed-off-by: Bart Van Assche <[email protected]> Cc: David Dillow <[email protected]> Cc: Roland Dreier <[email protected]> --- drivers/infiniband/ulp/srp/ib_srp.c | 16 ++++++++-------- drivers/infiniband/ulp/srp/ib_srp.h | 1 - 2 files changed, 8 insertions(+), 9 deletions(-) diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index 6279343..04fbc43 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -610,13 +610,16 @@ static void srp_reset_req(struct srp_target_port *target, struct srp_request *re static int srp_reconnect_target(struct srp_target_port *target) { + struct Scsi_Host *shost = target->scsi_host; struct ib_qp_attr qp_attr; struct ib_wc wc; int i, ret; - if (!srp_change_state(target, SRP_TARGET_LIVE, SRP_TARGET_CONNECTING)) + if (target->state != SRP_TARGET_LIVE) return -EAGAIN; + scsi_target_block(&shost->shost_gendev); + srp_disconnect_target(target); /* * Now get a new local CM ID so that we avoid confusing the @@ -654,8 +657,7 @@ static int srp_reconnect_target(struct srp_target_port *target) if (ret) goto err; - if (!srp_change_state(target, SRP_TARGET_CONNECTING, SRP_TARGET_LIVE)) - ret = -EAGAIN; + scsi_target_unblock(&shost->shost_gendev); return ret; @@ -673,13 +675,15 @@ err: * the flush_scheduled_work() in srp_remove_one(). */ spin_lock_irq(&target->lock); - if (target->state == SRP_TARGET_CONNECTING) { + if (target->state == SRP_TARGET_LIVE) { target->state = SRP_TARGET_DEAD; INIT_WORK(&target->work, srp_remove_work); queue_work(ib_wq, &target->work); } spin_unlock_irq(&target->lock); + scsi_target_unblock(&shost->shost_gendev); + return ret; } @@ -1268,9 +1272,6 @@ static int srp_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scmnd) unsigned long flags; int len; - if (target->state == SRP_TARGET_CONNECTING) - goto err; - if (target->state == SRP_TARGET_DEAD || target->state == SRP_TARGET_REMOVED) { scmnd->result = DID_BAD_TARGET << 16; @@ -1334,7 +1335,6 @@ err_iu: err_unlock: spin_unlock_irqrestore(&target->lock, flags); -err: return SCSI_MLQUEUE_HOST_BUSY; } diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h index f0daeb3..02dc3ac 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.h +++ b/drivers/infiniband/ulp/srp/ib_srp.h @@ -80,7 +80,6 @@ enum { enum srp_target_state { SRP_TARGET_LIVE, - SRP_TARGET_CONNECTING, SRP_TARGET_DEAD, SRP_TARGET_REMOVED }; -- 1.7.7 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
