diff options
| author | Sagi Grimberg <sagig@mellanox.com> | 2014-04-29 10:13:47 (GMT) |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-05-16 00:09:11 (GMT) |
| commit | 14f4b54fe38f3a8f8392a50b951c8aa43b63687a (patch) | |
| tree | 7aa8efa8e5b927d58803bf896843388320666c1c /drivers/infiniband/ulp | |
| parent | 531b7bf4bd795d9a09eac92504322a472c010bc8 (diff) | |
| download | linux-14f4b54fe38f3a8f8392a50b951c8aa43b63687a.tar.xz | |
Target/iscsi,iser: Avoid accepting transport connections during stop stage
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.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/infiniband/ulp')
| -rw-r--r-- | drivers/infiniband/ulp/isert/ib_isert.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index 826eaf5..a171046 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -562,7 +562,15 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) struct isert_device *device; struct ib_device *ib_dev = cma_id->device; int ret = 0; - u8 pi_support = np->tpg_np->tpg->tpg_attrib.t10_pi; + u8 pi_support; + + 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); @@ -653,6 +661,7 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) goto out_mr; } + pi_support = np->tpg_np->tpg->tpg_attrib.t10_pi; if (pi_support && !device->pi_capable) { pr_err("Protection information requested but not supported\n"); ret = -EINVAL; |