From 9bb4ca68fc48eea618b1af1c1cde2a251ae32d1b Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Thu, 27 Feb 2014 07:02:48 -0800 Subject: [PATCH] iser-target: Ignore completions for FRWRs in isert_cq_tx_work This patch changes IB_WR_FAST_REG_MR + IB_WR_LOCAL_INV related work requests to include a ISER_FRWR_LI_WRID value in order to signal isert_cq_tx_work() that these requests should be ignored. This is necessary because even though IB_SEND_SIGNALED is not set for either work request, during a QP failure event the work requests will be returned with exception status from the TX completion queue. v2 changes: - Rename ISER_FRWR_LI_WRID -> ISER_FASTREG_LI_WRID (Sagi) Acked-by: Sagi Grimberg Cc: Or Gerlitz Cc: #3.12+ Signed-off-by: Nicholas Bellinger --- drivers/infiniband/ulp/isert/ib_isert.c | 8 ++++++-- drivers/infiniband/ulp/isert/ib_isert.h | 1 + 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index a70b0cf2b4c8..614a6ef6a79d 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -1751,8 +1751,10 @@ isert_cq_tx_work(struct work_struct *work) pr_debug("TX wc.status: 0x%08x\n", wc.status); pr_debug("TX wc.vendor_err: 0x%08x\n", wc.vendor_err); - atomic_dec(&isert_conn->post_send_buf_count); - isert_cq_tx_comp_err(tx_desc, isert_conn); + if (wc.wr_id != ISER_FASTREG_LI_WRID) { + atomic_dec(&isert_conn->post_send_buf_count); + isert_cq_tx_comp_err(tx_desc, isert_conn); + } } } @@ -2213,6 +2215,7 @@ isert_fast_reg_mr(struct fast_reg_descriptor *fr_desc, if (!fr_desc->valid) { memset(&inv_wr, 0, sizeof(inv_wr)); + inv_wr.wr_id = ISER_FASTREG_LI_WRID; inv_wr.opcode = IB_WR_LOCAL_INV; inv_wr.ex.invalidate_rkey = fr_desc->data_mr->rkey; wr = &inv_wr; @@ -2223,6 +2226,7 @@ isert_fast_reg_mr(struct fast_reg_descriptor *fr_desc, /* Prepare FASTREG WR */ memset(&fr_wr, 0, sizeof(fr_wr)); + fr_wr.wr_id = ISER_FASTREG_LI_WRID; fr_wr.opcode = IB_WR_FAST_REG_MR; fr_wr.wr.fast_reg.iova_start = fr_desc->data_frpl->page_list[0] + page_off; diff --git a/drivers/infiniband/ulp/isert/ib_isert.h b/drivers/infiniband/ulp/isert/ib_isert.h index 41e799ff8ecc..10be55a3185e 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.h +++ b/drivers/infiniband/ulp/isert/ib_isert.h @@ -6,6 +6,7 @@ #define ISERT_RDMA_LISTEN_BACKLOG 10 #define ISCSI_ISER_SG_TABLESIZE 256 +#define ISER_FASTREG_LI_WRID 0xffffffffffffffffULL enum isert_desc_type { ISCSI_TX_CONTROL, -- 2.20.1