IB/iser: Return error code when PDUs may not be sent

iSER limits the number of outstanding PDUs to send. When this threshold
is reached, it should return an error code (-ENOBUFS) instead of setting
the suspend_tx bit (which should be used only by libiscsi).

Signed-off-by: Erez Zilber <erezz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c
index 9b2041e25d5..dd221eda3ea 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.c
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.c
@@ -177,7 +177,7 @@ iscsi_iser_mtask_xmit(struct iscsi_conn *conn,
          * - if yes, the mtask is recycled at iscsi_complete_pdu
          * - if no,  the mtask is recycled at iser_snd_completion
          */
-        if (error && error != -EAGAIN)
+        if (error && error != -ENOBUFS)
                 iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
 
         return error;
@@ -241,7 +241,7 @@ iscsi_iser_ctask_xmit(struct iscsi_conn *conn,
                 error = iscsi_iser_ctask_xmit_unsol_data(conn, ctask);
 
  iscsi_iser_ctask_xmit_exit:
-        if (error && error != -EAGAIN)
+        if (error && error != -ENOBUFS)
                 iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
         return error;
 }