From f93f3a70da9175b4641f93d466d779675eb83fa2 Mon Sep 17 00:00:00 2001 From: Sagi Grimberg Date: Wed, 19 Feb 2014 17:50:24 +0200 Subject: [PATCH] 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 Signed-off-by: Nicholas Bellinger --- drivers/infiniband/ulp/isert/ib_isert.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index 7206314..2eb07b9 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"); -- 2.7.4