From 99cc600cdd6f938633394523447378f7a43f4340 Mon Sep 17 00:00:00 2001 From: Bhanu Prakash Gollapudi Date: Sun, 23 Oct 2011 23:23:56 -0700 Subject: [SCSI] bnx2fc: Handle ABTS timeout during ulp timeout If the IO and the corresponding ABTS are not responded by a target, cleanup the IO and issue explicit logout when ulp timer expires while waiting for ABTS to complete. Wait for the session to be ready before returning to the SCSI layer. If the session is not ready let the SCSI-ml escalate the error recovery. Signed-off-by: Bhanu Prakash Gollapudi Signed-off-by: James Bottomley --- drivers/scsi/bnx2fc/bnx2fc_io.c | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) (limited to 'drivers/scsi/bnx2fc/bnx2fc_io.c') diff --git a/drivers/scsi/bnx2fc/bnx2fc_io.c b/drivers/scsi/bnx2fc/bnx2fc_io.c index 0c64d18..84a78af 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_io.c +++ b/drivers/scsi/bnx2fc/bnx2fc_io.c @@ -1103,7 +1103,10 @@ int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd) struct fc_rport_libfc_priv *rp = rport->dd_data; struct bnx2fc_cmd *io_req; struct fc_lport *lport; + struct fc_rport_priv *rdata; struct bnx2fc_rport *tgt; + int logo_issued; + int wait_cnt = 0; int rc = FAILED; @@ -1192,8 +1195,40 @@ int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd) } else { printk(KERN_ERR PFX "eh_abort: io_req (xid = 0x%x) " "already in abts processing\n", io_req->xid); + if (cancel_delayed_work(&io_req->timeout_work)) + kref_put(&io_req->refcount, + bnx2fc_cmd_release); /* drop timer hold */ + bnx2fc_initiate_cleanup(io_req); + + 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; + rdata = io_req->tgt->rdata; + logo_issued = test_and_set_bit(BNX2FC_FLAG_EXPL_LOGO, + &tgt->flags); kref_put(&io_req->refcount, bnx2fc_cmd_release); spin_unlock_bh(&tgt->tgt_lock); + + if (!logo_issued) { + BNX2FC_IO_DBG(io_req, "Expl logo - tgt flags = 0x%lx\n", + 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 session not recovered, let SCSI-ml + * escalate error recovery. + */ + if (wait_cnt++ > BNX2FC_RELOGIN_WAIT_CNT) + return FAILED; + } while (!test_bit(BNX2FC_FLAG_SESSION_READY, + &tgt->flags)); + } return SUCCESS; } if (rc == FAILED) { @@ -1275,6 +1310,8 @@ void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd *io_req, io_req->refcount.refcount.counter, io_req->cmd_type); bnx2fc_scsi_done(io_req, DID_ERROR); kref_put(&io_req->refcount, bnx2fc_cmd_release); + if (io_req->wait_for_comp) + complete(&io_req->tm_done); } void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req, -- cgit v1.1