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author | 2019-05-10 11:43:46 -0700 | |
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committer | 2019-05-10 11:43:46 -0700 | |
commit | 2a267e7c41aa88215de2b542de797d03d16ecdfd (patch) | |
tree | b949270835e304c8b60a40cde1b2c2e19c13b33a /drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h | |
parent | Input: libps2 - mark expected switch fall-through (diff) | |
parent | Linux 5.1 (diff) | |
download | linux-dev-2a267e7c41aa88215de2b542de797d03d16ecdfd.tar.xz linux-dev-2a267e7c41aa88215de2b542de797d03d16ecdfd.zip |
Merge tag 'v5.1' into next
Sync up with mainline to bring in the latest APIs.
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h')
-rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h | 75 |
1 files changed, 63 insertions, 12 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h index 6dfab045925f..553956cadc8a 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h @@ -34,30 +34,81 @@ #include "en.h" -#define MLX5E_XDP_MAX_MTU ((int)(PAGE_SIZE - \ - MLX5_SKB_FRAG_SZ(XDP_PACKET_HEADROOM))) #define MLX5E_XDP_MIN_INLINE (ETH_HLEN + VLAN_HLEN) -#define MLX5E_XDP_TX_DS_COUNT \ - ((sizeof(struct mlx5e_tx_wqe) / MLX5_SEND_WQE_DS) + 1 /* SG DS */) +#define MLX5E_XDP_TX_EMPTY_DS_COUNT \ + (sizeof(struct mlx5e_tx_wqe) / MLX5_SEND_WQE_DS) +#define MLX5E_XDP_TX_DS_COUNT (MLX5E_XDP_TX_EMPTY_DS_COUNT + 1 /* SG DS */) +int mlx5e_xdp_max_mtu(struct mlx5e_params *params); bool mlx5e_xdp_handle(struct mlx5e_rq *rq, struct mlx5e_dma_info *di, void *va, u16 *rx_headroom, u32 *len); -bool mlx5e_poll_xdpsq_cq(struct mlx5e_cq *cq); -void mlx5e_free_xdpsq_descs(struct mlx5e_xdpsq *sq); - -bool mlx5e_xmit_xdp_frame(struct mlx5e_xdpsq *sq, struct mlx5e_xdp_info *xdpi); +bool mlx5e_poll_xdpsq_cq(struct mlx5e_cq *cq, struct mlx5e_rq *rq); +void mlx5e_free_xdpsq_descs(struct mlx5e_xdpsq *sq, struct mlx5e_rq *rq); +void mlx5e_set_xmit_fp(struct mlx5e_xdpsq *sq, bool is_mpw); +void mlx5e_xdp_rx_poll_complete(struct mlx5e_rq *rq); int mlx5e_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames, u32 flags); +static inline void mlx5e_xdp_tx_enable(struct mlx5e_priv *priv) +{ + set_bit(MLX5E_STATE_XDP_TX_ENABLED, &priv->state); +} + +static inline void mlx5e_xdp_tx_disable(struct mlx5e_priv *priv) +{ + clear_bit(MLX5E_STATE_XDP_TX_ENABLED, &priv->state); + /* let other device's napi(s) see our new state */ + synchronize_rcu(); +} + +static inline bool mlx5e_xdp_tx_is_enabled(struct mlx5e_priv *priv) +{ + return test_bit(MLX5E_STATE_XDP_TX_ENABLED, &priv->state); +} + static inline void mlx5e_xmit_xdp_doorbell(struct mlx5e_xdpsq *sq) { + if (sq->doorbell_cseg) { + mlx5e_notify_hw(&sq->wq, sq->pc, sq->uar_map, sq->doorbell_cseg); + sq->doorbell_cseg = NULL; + } +} + +static inline void +mlx5e_xdp_mpwqe_add_dseg(struct mlx5e_xdpsq *sq, dma_addr_t dma_addr, u16 dma_len) +{ + struct mlx5e_xdp_mpwqe *session = &sq->mpwqe; + struct mlx5_wqe_data_seg *dseg = + (struct mlx5_wqe_data_seg *)session->wqe + session->ds_count++; + + dseg->addr = cpu_to_be64(dma_addr); + dseg->byte_count = cpu_to_be32(dma_len); + dseg->lkey = sq->mkey_be; +} + +static inline void mlx5e_xdpsq_fetch_wqe(struct mlx5e_xdpsq *sq, + struct mlx5e_tx_wqe **wqe) +{ struct mlx5_wq_cyc *wq = &sq->wq; - struct mlx5e_tx_wqe *wqe; - u16 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc - 1); /* last pi */ + u16 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc); - wqe = mlx5_wq_cyc_get_wqe(wq, pi); + *wqe = mlx5_wq_cyc_get_wqe(wq, pi); + memset(*wqe, 0, sizeof(**wqe)); +} - mlx5e_notify_hw(wq, sq->pc, sq->uar_map, &wqe->ctrl); +static inline void +mlx5e_xdpi_fifo_push(struct mlx5e_xdp_info_fifo *fifo, + struct mlx5e_xdp_info *xi) +{ + u32 i = (*fifo->pc)++ & fifo->mask; + + fifo->xi[i] = *xi; +} + +static inline struct mlx5e_xdp_info +mlx5e_xdpi_fifo_pop(struct mlx5e_xdp_info_fifo *fifo) +{ + return fifo->xi[(*fifo->cc)++ & fifo->mask]; } #endif |