From mboxrd@z Thu Jan 1 00:00:00 1970 From: Saeed Mahameed Subject: [net-next 05/16] net/mlx5: Make get_cqe routine not ethernet-specific Date: Tue, 27 Jun 2017 17:28:45 +0300 Message-ID: <20170627142856.9448-6-saeedm@mellanox.com> References: <20170627142856.9448-1-saeedm@mellanox.com> Cc: netdev@vger.kernel.org, Leon Romanovsky , Ilan Tayari , Boris Pismenny , Yevgeny Kliteynik , Yossi Kuperman , Steffen Klassert , Sowmini Varadhan , Saeed Mahameed To: "David S. Miller" Return-path: Received: from mail-il-dmz.mellanox.com ([193.47.165.129]:50482 "EHLO mellanox.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752660AbdF0OaK (ORCPT ); Tue, 27 Jun 2017 10:30:10 -0400 In-Reply-To: <20170627142856.9448-1-saeedm@mellanox.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Ilan Tayari Move mlx5e_get_cqe routine to wq.h and rename it to mlx5_cqwq_get_cqe. This allows it to be used by other CQ users outside of the ethernet driver code. A later patch in this patchset will make use of it from FPGA code for the FPGA high-speed connection. Signed-off-by: Ilan Tayari Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/en.h | 1 - drivers/net/ethernet/mellanox/mlx5/core/en_rx.c | 4 ++-- drivers/net/ethernet/mellanox/mlx5/core/en_tx.c | 2 +- drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c | 19 +------------------ drivers/net/ethernet/mellanox/mlx5/core/wq.h | 17 +++++++++++++++++ 5 files changed, 21 insertions(+), 22 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h index eef0a50e2388..f93f44d1d1cf 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h @@ -833,7 +833,6 @@ void mlx5e_dealloc_rx_wqe(struct mlx5e_rq *rq, u16 ix); void mlx5e_dealloc_rx_mpwqe(struct mlx5e_rq *rq, u16 ix); void mlx5e_post_rx_mpwqe(struct mlx5e_rq *rq); void mlx5e_free_rx_mpwqe(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi); -struct mlx5_cqe64 *mlx5e_get_cqe(struct mlx5e_cq *cq); void mlx5e_rx_am(struct mlx5e_rq *rq); void mlx5e_rx_am_work(struct work_struct *work); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c index 5f3c138c948d..574a96279340 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c @@ -996,7 +996,7 @@ int mlx5e_poll_rx_cq(struct mlx5e_cq *cq, int budget) work_done += mlx5e_decompress_cqes_cont(rq, cq, 0, budget); for (; work_done < budget; work_done++) { - struct mlx5_cqe64 *cqe = mlx5e_get_cqe(cq); + struct mlx5_cqe64 *cqe = mlx5_cqwq_get_cqe(&cq->wq); if (!cqe) break; @@ -1050,7 +1050,7 @@ bool mlx5e_poll_xdpsq_cq(struct mlx5e_cq *cq) u16 wqe_counter; bool last_wqe; - cqe = mlx5e_get_cqe(cq); + cqe = mlx5_cqwq_get_cqe(&cq->wq); if (!cqe) break; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c index 0433d69429f3..ccec3b00e17c 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c @@ -409,7 +409,7 @@ bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq, int napi_budget) u16 wqe_counter; bool last_wqe; - cqe = mlx5e_get_cqe(cq); + cqe = mlx5_cqwq_get_cqe(&cq->wq); if (!cqe) break; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c index 5ca6714e3e02..92db28a9ed43 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c @@ -32,23 +32,6 @@ #include "en.h" -struct mlx5_cqe64 *mlx5e_get_cqe(struct mlx5e_cq *cq) -{ - struct mlx5_cqwq *wq = &cq->wq; - u32 ci = mlx5_cqwq_get_ci(wq); - struct mlx5_cqe64 *cqe = mlx5_cqwq_get_wqe(wq, ci); - u8 cqe_ownership_bit = cqe->op_own & MLX5_CQE_OWNER_MASK; - u8 sw_ownership_val = mlx5_cqwq_get_wrap_cnt(wq) & 1; - - if (cqe_ownership_bit != sw_ownership_val) - return NULL; - - /* ensure cqe content is read after cqe ownership bit */ - dma_rmb(); - - return cqe; -} - static inline void mlx5e_poll_ico_single_cqe(struct mlx5e_cq *cq, struct mlx5e_icosq *sq, struct mlx5_cqe64 *cqe, @@ -89,7 +72,7 @@ static void mlx5e_poll_ico_cq(struct mlx5e_cq *cq) if (unlikely(!test_bit(MLX5E_SQ_STATE_ENABLED, &sq->state))) return; - cqe = mlx5e_get_cqe(cq); + cqe = mlx5_cqwq_get_cqe(&cq->wq); if (likely(!cqe)) return; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/wq.h b/drivers/net/ethernet/mellanox/mlx5/core/wq.h index d8afed898c31..9ded5d40ce6b 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/wq.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/wq.h @@ -34,6 +34,7 @@ #define __MLX5_WQ_H__ #include +#include struct mlx5_wq_param { int linear; @@ -146,6 +147,22 @@ static inline void mlx5_cqwq_update_db_record(struct mlx5_cqwq *wq) *wq->db = cpu_to_be32(wq->cc & 0xffffff); } +static inline struct mlx5_cqe64 *mlx5_cqwq_get_cqe(struct mlx5_cqwq *wq) +{ + u32 ci = mlx5_cqwq_get_ci(wq); + struct mlx5_cqe64 *cqe = mlx5_cqwq_get_wqe(wq, ci); + u8 cqe_ownership_bit = cqe->op_own & MLX5_CQE_OWNER_MASK; + u8 sw_ownership_val = mlx5_cqwq_get_wrap_cnt(wq) & 1; + + if (cqe_ownership_bit != sw_ownership_val) + return NULL; + + /* ensure cqe content is read after cqe ownership bit */ + dma_rmb(); + + return cqe; +} + static inline int mlx5_wq_ll_is_full(struct mlx5_wq_ll *wq) { return wq->cur_sz == wq->sz_m1; -- 2.11.0