IB/srp: Allow SRP disconnect through sysfs
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>
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 84d9298..d5088ce7 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -549,6 +549,13 @@
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 @@
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 struct srp_function_template ib_srp_transport_functions = {
+ .rport_delete = srp_rport_delete,
};
static int __init srp_init_module(void)