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IB/srp: Allow SRP disconnect through sysfs

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Make it possible to disconnect the IB RC connection used by the SRP
protocol to communicate with a target.

Have the SRP transport layer create a sysfs "delete" attribute for
initiator drivers that support this functionality.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: David Dillow <dillowda@ornl.gov>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Robert Jennings <rcj@linux.vnet.ibm.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Bart Van Assche
2011-09-16 20:41:13 +02:00
committed by Roland Dreier
parent 7e1265bfe7
commit dc1bdbd9b8
4 changed files with 46 additions and 1 deletions
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10
drivers/infiniband/ulp/srp/ib_srp.c
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@@ -549,6 +549,13 @@ static void srp_remove_work(struct work_struct *work)
srp_remove_target(target);
}
static void srp_rport_delete(struct srp_rport *rport)
{
struct srp_target_port *target = rport->lld_data;
srp_queue_remove_work(target);
}
static int srp_connect_target(struct srp_target_port *target)
{
int retries = 3;
@@ -1958,6 +1965,8 @@ static int srp_add_target(struct srp_host *host, struct srp_target_port *target)
return PTR_ERR(rport);
}
rport->lld_data = target;
spin_lock(&host->target_lock);
list_add_tail(&target->list, &host->target_list);
spin_unlock(&host->target_lock);
@@ -2524,6 +2533,7 @@ static void srp_remove_one(struct ib_device *device)
}
static struct srp_function_template ib_srp_transport_functions = {
.rport_delete = srp_rport_delete,
};
static int __init srp_init_module(void)