From 5c17ae217ad13463f821c3bab774335777da9c33 Mon Sep 17 00:00:00 2001 From: Bhanu Prakash Gollapudi Date: Thu, 7 Jun 2012 02:19:35 -0700 Subject: [SCSI] bnx2fc: Improve error recovery by handling parity errors During parity errors, the ramrods are not issued to FW. bnx2fc waits for the timeout value, and proceeds with cleaning up the IOs. Since we are already out-of-sync with FW, cleanup commands timeout too, and do not get the completion. This operation takes 36 secs for each session to upload causing huge delays. To fix this, bnx2fc now gets a PARITY_ERROR from cnic driver, and upon failure, the driver does not issue any commands to the FW and finishes the upload process sooner. Signed-off-by: Bhanu Prakash Gollapudi Signed-off-by: James Bottomley --- drivers/scsi/bnx2fc/bnx2fc_tgt.c | 25 ++++++++++++++++++++----- 1 file changed, 20 insertions(+), 5 deletions(-) (limited to 'drivers/scsi/bnx2fc/bnx2fc_tgt.c') diff --git a/drivers/scsi/bnx2fc/bnx2fc_tgt.c b/drivers/scsi/bnx2fc/bnx2fc_tgt.c index 082a25c3117e..85ffdeaa3b85 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_tgt.c +++ b/drivers/scsi/bnx2fc/bnx2fc_tgt.c @@ -181,8 +181,14 @@ void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt) set_bit(BNX2FC_FLAG_IO_COMPL, &io_req->req_flags); set_bit(BNX2FC_FLAG_IO_CLEANUP, &io_req->req_flags); - rc = bnx2fc_initiate_cleanup(io_req); - BUG_ON(rc); + + /* Do not issue cleanup when disable request failed */ + if (test_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags)) + bnx2fc_process_cleanup_compl(io_req, io_req->task, 0); + else { + rc = bnx2fc_initiate_cleanup(io_req); + BUG_ON(rc); + } } list_for_each_safe(list, tmp, &tgt->active_tm_queue) { @@ -212,8 +218,13 @@ void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt) io_req->cb_arg = NULL; } - rc = bnx2fc_initiate_cleanup(io_req); - BUG_ON(rc); + /* Do not issue cleanup when disable request failed */ + if (test_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags)) + bnx2fc_process_cleanup_compl(io_req, io_req->task, 0); + else { + rc = bnx2fc_initiate_cleanup(io_req); + BUG_ON(rc); + } } list_for_each_safe(list, tmp, &tgt->io_retire_queue) { @@ -321,9 +332,13 @@ static void bnx2fc_upload_session(struct fcoe_port *port, del_timer_sync(&tgt->upld_timer); - } else + } else if (test_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags)) { + printk(KERN_ERR PFX "ERROR!! DISABLE req failed, destroy" + " not sent to FW\n"); + } else { printk(KERN_ERR PFX "ERROR!! DISABLE req timed out, destroy" " not sent to FW\n"); + } /* Free session resources */ bnx2fc_free_session_resc(hba, tgt); -- cgit v1.2.3