From: Xueming Li Date: Thu, 23 Aug 2018 23:10:33 +0000 (+0800) Subject: net/mlx5: fix interrupt completion queue index wrapping X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=3afdf157fcedba15167ad03b187746bd6c73811f;p=dpdk.git net/mlx5: fix interrupt completion queue index wrapping Rxq cq_ci was 16 bits while hardware is expecting to wrap around 24 bits, this caused interrupt failure after burst of packets. Fixes: 43e9d9794cde ("net/mlx5: support upstream rdma-core") Cc: stable@dpdk.org Signed-off-by: Xueming Li Acked-by: Yongseok Koh --- diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c index 2d14f8a6ed..558e6b60ab 100644 --- a/drivers/net/mlx5/mlx5_rxtx.c +++ b/drivers/net/mlx5/mlx5_rxtx.c @@ -2097,7 +2097,7 @@ mlx5_rx_burst_mprq(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n) const unsigned int wq_mask = (1 << rxq->elts_n) - 1; volatile struct mlx5_cqe *cqe = &(*rxq->cqes)[rxq->cq_ci & cq_mask]; unsigned int i = 0; - uint16_t rq_ci = rxq->rq_ci; + uint32_t rq_ci = rxq->rq_ci; uint16_t consumed_strd = rxq->consumed_strd; struct mlx5_mprq_buf *buf = (*rxq->mprq_bufs)[rq_ci & wq_mask]; diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h index 48ed2b209a..d225b9c27f 100644 --- a/drivers/net/mlx5/mlx5_rxtx.h +++ b/drivers/net/mlx5/mlx5_rxtx.h @@ -97,10 +97,10 @@ struct mlx5_rxq_data { volatile uint32_t *rq_db; volatile uint32_t *cq_db; uint16_t port_id; - uint16_t rq_ci; + uint32_t rq_ci; uint16_t consumed_strd; /* Number of consumed strides in WQE. */ - uint16_t rq_pi; - uint16_t cq_ci; + uint32_t rq_pi; + uint32_t cq_ci; struct mlx5_mr_ctrl mr_ctrl; /* MR control descriptor. */ uint16_t mprq_max_memcpy_len; /* Maximum size of packet to memcpy. */ volatile void *wqes;