path: root/drivers/infiniband
diff options
authorSagi Grimberg <sagig@mellanox.com>2014-04-29 13:13:47 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-06-16 13:42:53 -0700
commitc2334086a4bb352c85c4dc9bb18d23586329fb08 (patch)
tree4ca6083035eaf61edd95e208313837c0e3c1d427 /drivers/infiniband
parented6b7164b4a932f91630da7dadaa1aeb33029d25 (diff)
Target/iscsi,iser: Avoid accepting transport connections during stop stage
commit 14f4b54fe38f3a8f8392a50b951c8aa43b63687a upstream. When the target is in stop stage, iSER transport initiates RDMA disconnects. The iSER initiator may wish to establish a new connection over the still existing network portal. In this case iSER transport should not accept and resume new RDMA connections. In order to learn that, iscsi_np is added with enabled flag so the iSER transport can check when deciding weather to accept and resume a new connection request. The iscsi_np is enabled after successful transport setup, and disabled before iscsi_np login threads are cleaned up. (Fix up context changes for v3.10.y - nab) Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/infiniband')
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index bae20f8bb034..144999918022 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -382,6 +382,14 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
struct ib_device *ib_dev = cma_id->device;
int ret = 0;
+ spin_lock_bh(&np->np_thread_lock);
+ if (!np->enabled) {
+ spin_unlock_bh(&np->np_thread_lock);
+ pr_debug("iscsi_np is not enabled, reject connect request\n");
+ return rdma_reject(cma_id, NULL, 0);
+ }
+ spin_unlock_bh(&np->np_thread_lock);
pr_debug("Entering isert_connect_request cma_id: %p, context: %p\n",
cma_id, cma_id->context);