From 121e89275471dccbd5b252e40ad6a823fa0527f7 Mon Sep 17 00:00:00 2001 From: Tariq Toukan Date: Tue, 12 Dec 2017 15:46:49 +0200 Subject: net/mlx5e: Refactor RQ XDP_TX indication Make the xdp_xmit indication available for Striding RQ by taking it out of the type-specific union. This refactor is a preparation for a downstream patch that adds XDP support over Striding RQ. In addition, use a bitmap instead of a boolean for possible future flags. Signed-off-by: Tariq Toukan Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/en.h | 6 +++++- drivers/net/ethernet/mellanox/mlx5/core/en_rx.c | 8 +++----- 2 files changed, 8 insertions(+), 6 deletions(-) (limited to 'drivers/net') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h index d26dd4bc89f4..a6ca54393bb6 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h @@ -479,6 +479,10 @@ typedef struct sk_buff * typedef bool (*mlx5e_fp_post_rx_wqes)(struct mlx5e_rq *rq); typedef void (*mlx5e_fp_dealloc_wqe)(struct mlx5e_rq*, u16); +enum mlx5e_rq_flag { + MLX5E_RQ_FLAG_XDP_XMIT = BIT(0), +}; + struct mlx5e_rq { /* data path */ struct mlx5_wq_ll wq; @@ -489,7 +493,6 @@ struct mlx5e_rq { u32 frag_sz; /* max possible skb frag_sz */ union { bool page_reuse; - bool xdp_xmit; }; } wqe; struct { @@ -528,6 +531,7 @@ struct mlx5e_rq { struct bpf_prog *xdp_prog; unsigned int hw_mtu; struct mlx5e_xdpsq xdpsq; + DECLARE_BITMAP(flags, 8); /* control */ struct mlx5_wq_ctrl wq_ctrl; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c index 07db8a58d0a2..a827571deb85 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c @@ -788,7 +788,7 @@ static inline bool mlx5e_xmit_xdp_frame(struct mlx5e_rq *rq, /* move page to reference to sq responsibility, * and mark so it's not put back in page-cache. */ - rq->wqe.xdp_xmit = true; + __set_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags); /* non-atomic */ sq->db.di[pi] = *di; sq->pc++; @@ -913,9 +913,8 @@ void mlx5e_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe) skb = skb_from_cqe(rq, cqe, wi, cqe_bcnt); if (!skb) { /* probably for XDP */ - if (rq->wqe.xdp_xmit) { + if (__test_and_clear_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags)) { wi->di.page = NULL; - rq->wqe.xdp_xmit = false; /* do not return page to cache, it will be returned on XDP_TX completion */ goto wq_ll_pop; } @@ -955,9 +954,8 @@ void mlx5e_handle_rx_cqe_rep(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe) skb = skb_from_cqe(rq, cqe, wi, cqe_bcnt); if (!skb) { - if (rq->wqe.xdp_xmit) { + if (__test_and_clear_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags)) { wi->di.page = NULL; - rq->wqe.xdp_xmit = false; /* do not return page to cache, it will be returned on XDP_TX completion */ goto wq_ll_pop; } -- cgit v1.2.3-59-g8ed1b