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Commit 0e0fcef9 authored by Saurav Kashyap's avatar Saurav Kashyap Committed by Martin K. Petersen
Browse files

scsi: bnx2fc: Separate out completion flags and variables for abort and cleanup 



Separate out abort and cleanup flag and completion, to have better
understaning of what is getting processed.

Signed-off-by: default avatarSaurav Kashyap <skashyap@marvell.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent a92ac6ee

drivers/scsi/bnx2fc/bnx2fc.h

+4 −2
Original line number Diff line number Diff line
@@ -433,8 +433,10 @@ struct bnx2fc_cmd { 
	void (*cb_func)(struct bnx2fc_els_cb_arg *cb_arg);

	struct bnx2fc_els_cb_arg *cb_arg;

	struct delayed_work timeout_work; /* timer for ULP timeouts */

	struct completion tm_done;

	int wait_for_comp;

	struct completion abts_done;

	struct completion cleanup_done;

	int wait_for_abts_comp;

	int wait_for_cleanup_comp;

	u16 xid;

	struct fcoe_err_report_entry err_entry;

	struct fcoe_task_ctx_entry *task;

drivers/scsi/bnx2fc/bnx2fc_io.c

+32 −27
Original line number Diff line number Diff line
@@ -70,7 +70,7 @@ static void bnx2fc_cmd_timeout(struct work_struct *work) 
							&io_req->req_flags)) {

			/* Handle eh_abort timeout */

			BNX2FC_IO_DBG(io_req, "eh_abort timed out\n");

			complete(&io_req->tm_done);

			complete(&io_req->abts_done);

		} else if (test_bit(BNX2FC_FLAG_ISSUE_ABTS,

				    &io_req->req_flags)) {

			/* Handle internally generated ABTS timeout */
@@ -775,31 +775,32 @@ static int bnx2fc_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags) 
	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;

	init_completion(&io_req->abts_done);

	io_req->wait_for_abts_comp = 1;



	/* Ring doorbell */

	bnx2fc_ring_doorbell(tgt);

	spin_unlock_bh(&tgt->tgt_lock);



	rc = wait_for_completion_timeout(&io_req->tm_done,

	rc = wait_for_completion_timeout(&io_req->abts_done,

					 interface->tm_timeout * HZ);

	spin_lock_bh(&tgt->tgt_lock);



	io_req->wait_for_comp = 0;

	io_req->wait_for_abts_comp = 0;

	if (!(test_bit(BNX2FC_FLAG_TM_COMPL, &io_req->req_flags))) {

		set_bit(BNX2FC_FLAG_TM_TIMEOUT, &io_req->req_flags);

		if (io_req->on_tmf_queue) {

			list_del_init(&io_req->link);

			io_req->on_tmf_queue = 0;

		}

		io_req->wait_for_comp = 1;

		io_req->wait_for_cleanup_comp = 1;

		init_completion(&io_req->cleanup_done);

		bnx2fc_initiate_cleanup(io_req);

		spin_unlock_bh(&tgt->tgt_lock);

		rc = wait_for_completion_timeout(&io_req->tm_done,

		rc = wait_for_completion_timeout(&io_req->cleanup_done,

						 BNX2FC_FW_TIMEOUT);

		spin_lock_bh(&tgt->tgt_lock);

		io_req->wait_for_comp = 0;

		io_req->wait_for_cleanup_comp = 0;

		if (!rc)

			kref_put(&io_req->refcount, bnx2fc_cmd_release);

	}
@@ -1085,7 +1086,8 @@ static int bnx2fc_abts_cleanup(struct bnx2fc_cmd *io_req) 
	struct bnx2fc_rport *tgt = io_req->tgt;

	unsigned int time_left;



	io_req->wait_for_comp = 1;

	init_completion(&io_req->cleanup_done);

	io_req->wait_for_cleanup_comp = 1;

	bnx2fc_initiate_cleanup(io_req);



	spin_unlock_bh(&tgt->tgt_lock);
@@ -1094,9 +1096,8 @@ static int bnx2fc_abts_cleanup(struct bnx2fc_cmd *io_req) 
	 * Can't wait forever on cleanup response lest we let the SCSI error

	 * handler wait forever

	 */

	time_left = wait_for_completion_timeout(&io_req->tm_done,

	time_left = wait_for_completion_timeout(&io_req->cleanup_done,

						BNX2FC_FW_TIMEOUT);

	io_req->wait_for_comp = 0;

	if (!time_left) {

		BNX2FC_IO_DBG(io_req, "%s(): Wait for cleanup timed out.\n",

			      __func__);
@@ -1109,6 +1110,7 @@ static int bnx2fc_abts_cleanup(struct bnx2fc_cmd *io_req) 
	}



	spin_lock_bh(&tgt->tgt_lock);

	io_req->wait_for_cleanup_comp = 0;

	return SUCCESS;

}
@@ -1197,7 +1199,8 @@ int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd) 
	/* Move IO req to retire queue */

	list_add_tail(&io_req->link, &tgt->io_retire_queue);



	init_completion(&io_req->tm_done);

	init_completion(&io_req->abts_done);

	init_completion(&io_req->cleanup_done);



	if (test_and_set_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags)) {

		printk(KERN_ERR PFX "eh_abort: io_req (xid = 0x%x) "
@@ -1225,26 +1228,28 @@ int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd) 
		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;

	io_req->wait_for_abts_comp = 1;

	rc = bnx2fc_initiate_abts(io_req);

	if (rc == FAILED) {

		io_req->wait_for_cleanup_comp = 1;

		bnx2fc_initiate_cleanup(io_req);

		spin_unlock_bh(&tgt->tgt_lock);

		wait_for_completion(&io_req->tm_done);

		wait_for_completion(&io_req->cleanup_done);

		spin_lock_bh(&tgt->tgt_lock);

		io_req->wait_for_comp = 0;

		io_req->wait_for_cleanup_comp = 0;

		goto done;

	}

	spin_unlock_bh(&tgt->tgt_lock);



	/* Wait 2 * RA_TOV + 1 to be sure timeout function hasn't fired */

	time_left = wait_for_completion_timeout(&io_req->tm_done,

	time_left = wait_for_completion_timeout(&io_req->abts_done,

						(2 * rp->r_a_tov + 1) * HZ);

	if (time_left)

		BNX2FC_IO_DBG(io_req, "Timed out in eh_abort waiting for tm_done");

		BNX2FC_IO_DBG(io_req,

			      "Timed out in eh_abort waiting for abts_done");



	spin_lock_bh(&tgt->tgt_lock);

	io_req->wait_for_comp = 0;

	io_req->wait_for_abts_comp = 0;

	if (test_bit(BNX2FC_FLAG_IO_COMPL, &io_req->req_flags)) {

		BNX2FC_IO_DBG(io_req, "IO completed in a different context\n");

		rc = SUCCESS;
@@ -1321,8 +1326,8 @@ void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd *io_req, 
		   kref_read(&io_req->refcount), 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);

	if (io_req->wait_for_cleanup_comp)

		complete(&io_req->cleanup_done);

}



void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req,
@@ -1390,10 +1395,10 @@ void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req, 
	bnx2fc_cmd_timer_set(io_req, r_a_tov);



io_compl:

	if (io_req->wait_for_comp) {

	if (io_req->wait_for_abts_comp) {

		if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT,

				       &io_req->req_flags))

			complete(&io_req->tm_done);

			complete(&io_req->abts_done);

	} else {

		/*

		 * We end up here when ABTS is issued as
@@ -1577,9 +1582,9 @@ void bnx2fc_process_tm_compl(struct bnx2fc_cmd *io_req, 
	sc_cmd->scsi_done(sc_cmd);



	kref_put(&io_req->refcount, bnx2fc_cmd_release);

	if (io_req->wait_for_comp) {

	if (io_req->wait_for_abts_comp) {

		BNX2FC_IO_DBG(io_req, "tm_compl - wake up the waiter\n");

		complete(&io_req->tm_done);

		complete(&io_req->abts_done);

	}

}
@@ -1926,10 +1931,10 @@ void bnx2fc_process_scsi_cmd_compl(struct bnx2fc_cmd *io_req, 
		 * 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 (io_req->wait_for_abts_comp)

			if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT,

					       &io_req->req_flags))

				complete(&io_req->tm_done);

				complete(&io_req->abts_done);

	}



	bnx2fc_unmap_sg_list(io_req);

drivers/scsi/bnx2fc/bnx2fc_tgt.c

+5 −5
Original line number Diff line number Diff line
@@ -187,7 +187,7 @@ void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt) 
				/* Handle eh_abort timeout */

				BNX2FC_IO_DBG(io_req, "eh_abort for IO "

					      "cleaned up\n");

				complete(&io_req->tm_done);

				complete(&io_req->abts_done);

			}

			kref_put(&io_req->refcount,

				 bnx2fc_cmd_release); /* drop timer hold */
@@ -210,8 +210,8 @@ void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt) 
		list_del_init(&io_req->link);

		io_req->on_tmf_queue = 0;

		BNX2FC_IO_DBG(io_req, "tm_queue cleanup\n");

		if (io_req->wait_for_comp)

			complete(&io_req->tm_done);

		if (io_req->wait_for_abts_comp)

			complete(&io_req->abts_done);

	}



	list_for_each_entry_safe(io_req, tmp, &tgt->els_queue, link) {
@@ -251,8 +251,8 @@ void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt) 
				/* Handle eh_abort timeout */

				BNX2FC_IO_DBG(io_req, "eh_abort for IO "

					      "in retire_q\n");

				if (io_req->wait_for_comp)

					complete(&io_req->tm_done);

				if (io_req->wait_for_abts_comp)

					complete(&io_req->abts_done);

			}

			kref_put(&io_req->refcount, bnx2fc_cmd_release);

		}