ib_isert: Avoid duplicate iscsit_increment_maxcmdsn call

This patch avoids a duplicate iscsit_increment_maxcmdsn() call for
ISER_IB_RDMA_WRITE within isert_map_rdma() + isert_reg_rdma_frwr(),
which will already be occuring once during isert_put_datain() ->
iscsit_build_rsp_pdu() operation.

It also removes the local conn->stat_sn assignment + increment,
and changes the third parameter to iscsit_build_rsp_pdu() to
signal this should be done by iscsi_target_mode code.

Tested-by: Moussa Ba <moussaba@micron.com>
Cc: <stable@vger.kernel.org> # v3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index bbd86e8..5661075 100644 (file)
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -2029,8 +2029,6 @@ isert_map_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
 
        if (wr->iser_ib_op == ISER_IB_RDMA_WRITE) {
                data_left = se_cmd->data_length;
-               iscsit_increment_maxcmdsn(cmd, conn->sess);
-               cmd->stat_sn = conn->stat_sn++;
        } else {
                sg_off = cmd->write_data_done / PAGE_SIZE;
                data_left = se_cmd->data_length - cmd->write_data_done;
@@ -2242,8 +2240,6 @@ isert_reg_rdma_frwr(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
 
        if (wr->iser_ib_op == ISER_IB_RDMA_WRITE) {
                data_left = se_cmd->data_length;
-               iscsit_increment_maxcmdsn(cmd, conn->sess);
-               cmd->stat_sn = conn->stat_sn++;
        } else {
                sg_off = cmd->write_data_done / PAGE_SIZE;
                data_left = se_cmd->data_length - cmd->write_data_done;
@@ -2352,7 +2348,7 @@ isert_put_datain(struct iscsi_conn *conn, struct iscsi_cmd *cmd)
         * Build isert_conn->tx_desc for iSCSI response PDU and attach
         */
        isert_create_send_desc(isert_conn, isert_cmd, &isert_cmd->tx_desc);
-       iscsit_build_rsp_pdu(cmd, conn, false, (struct iscsi_scsi_rsp *)
+       iscsit_build_rsp_pdu(cmd, conn, true, (struct iscsi_scsi_rsp *)
                             &isert_cmd->tx_desc.iscsi_header);
        isert_init_tx_hdrs(isert_conn, &isert_cmd->tx_desc);
        isert_init_send_wr(isert_conn, isert_cmd,