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authorBart Van Assche <bvanassche@acm.org>2011-09-16 22:41:13 +0400
committerRoland Dreier <roland@purestorage.com>2012-12-01 05:40:33 +0400
commitdc1bdbd9b8a077018d82230bc378f1bcfd8adba8 (patch)
treee6484d9d378a0bad8a4f7057ae29d4164b33278e /drivers/infiniband
parent7e1265bfe75f0ef1a9f5cfde202df68b7e35a53f (diff)
downloadlinux-dc1bdbd9b8a077018d82230bc378f1bcfd8adba8.tar.xz
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>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/ulp/srp/ib_srp.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 84d9298ed989..d5088ce78290 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -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)