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authorSagi Grimberg <sagig@mellanox.com>2014-02-19 17:50:24 +0200
committerNicholas Bellinger <nab@linux-iscsi.org>2014-04-07 01:48:46 -0700
commitf93f3a70da9175b4641f93d466d779675eb83fa2 (patch)
tree98a7a3315ceda22991895b35ea401dea3b57428e /drivers/infiniband
parentd3e125dac1f4fd983bb6d8d654f152f243f7c953 (diff)
downloadlinux-f93f3a70da9175b4641f93d466d779675eb83fa2.tar.bz2
IB/isert: Accept RDMA_WRITE completions
In case of protected transactions, we will need to check the protection status of the transaction before sending SCSI response. So be ready for RDMA_WRITE completions. currently we don't ask for these completions, but for T10-PI we will. Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/ulp/isert/ib_isert.c19
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index 72063147933c..2eb07b943ed9 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -51,6 +51,8 @@ isert_unreg_rdma(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn);
static int
isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
struct isert_rdma_wr *wr);
+static int
+isert_put_response(struct iscsi_conn *conn, struct iscsi_cmd *cmd);
static void
isert_qp_event_callback(struct ib_event *e, void *context)
@@ -1652,6 +1654,18 @@ isert_completion_put(struct iser_tx_desc *tx_desc, struct isert_cmd *isert_cmd,
}
static void
+isert_completion_rdma_write(struct iser_tx_desc *tx_desc,
+ struct isert_cmd *isert_cmd)
+{
+ struct iscsi_cmd *cmd = isert_cmd->iscsi_cmd;
+ struct isert_conn *isert_conn = isert_cmd->conn;
+ struct isert_device *device = isert_conn->conn_device;
+
+ device->unreg_rdma_mem(isert_cmd, isert_conn);
+ isert_put_response(isert_conn->conn, cmd);
+}
+
+static void
isert_completion_rdma_read(struct iser_tx_desc *tx_desc,
struct isert_cmd *isert_cmd)
{
@@ -1773,8 +1787,9 @@ __isert_send_completion(struct iser_tx_desc *tx_desc,
isert_conn, ib_dev);
break;
case ISER_IB_RDMA_WRITE:
- pr_err("isert_send_completion: Got ISER_IB_RDMA_WRITE\n");
- dump_stack();
+ pr_debug("isert_send_completion: Got ISER_IB_RDMA_WRITE\n");
+ atomic_dec(&isert_conn->post_send_buf_count);
+ isert_completion_rdma_write(tx_desc, isert_cmd);
break;
case ISER_IB_RDMA_READ:
pr_debug("isert_send_completion: Got ISER_IB_RDMA_READ:\n");