Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 2110f9bf authored by Or Gerlitz's avatar Or Gerlitz Committed by Roland Dreier
Browse files

IB/iser: Add asynchronous event handler 



Add handler to handle events such as port up and down.  This is useful
when testing high-availability schemes such as multi-pathing.

Signed-off-by: default avatarOr Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 0eddb519

drivers/infiniband/ulp/iser/iscsi_iser.h

+1 −0
Original line number Diff line number Diff line
@@ -232,6 +232,7 @@ struct iser_device { 
	struct ib_cq	             *tx_cq;

	struct ib_mr	             *mr;

	struct tasklet_struct	     cq_tasklet;

	struct ib_event_handler      event_handler;

	struct list_head             ig_list; /* entry in ig devices list */

	int                          refcount;

};

drivers/infiniband/ulp/iser/iser_verbs.c

+15 −1
Original line number Diff line number Diff line
@@ -54,6 +54,13 @@ static void iser_qp_event_callback(struct ib_event *cause, void *context) 
	iser_err("got qp event %d\n",cause->event);

}



static void iser_event_handler(struct ib_event_handler *handler,

				struct ib_event *event)

{

	iser_err("async event %d on device %s port %d\n", event->event,

		event->device->name, event->element.port_num);

}



/**

 * iser_create_device_ib_res - creates Protection Domain (PD), Completion

 * Queue (CQ), DMA Memory Region (DMA MR) with the device associated with
@@ -96,8 +103,15 @@ static int iser_create_device_ib_res(struct iser_device *device) 
	if (IS_ERR(device->mr))

		goto dma_mr_err;



	INIT_IB_EVENT_HANDLER(&device->event_handler, device->ib_device,

				iser_event_handler);

	if (ib_register_event_handler(&device->event_handler))

		goto handler_err;



	return 0;



handler_err:

	ib_dereg_mr(device->mr);

dma_mr_err:

	tasklet_kill(&device->cq_tasklet);

cq_arm_err:
@@ -120,7 +134,7 @@ static void iser_free_device_ib_res(struct iser_device *device) 
	BUG_ON(device->mr == NULL);



	tasklet_kill(&device->cq_tasklet);



	(void)ib_unregister_event_handler(&device->event_handler);

	(void)ib_dereg_mr(device->mr);

	(void)ib_destroy_cq(device->tx_cq);

	(void)ib_destroy_cq(device->rx_cq);