diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h')
-rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h index 4456ad5cedf1..853f312cd757 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h @@ -11,6 +11,27 @@ #define INL_HDR_START_SZ (sizeof(((struct mlx5_wqe_eth_seg *)NULL)->inline_hdr.start)) +/* IPSEC inline data includes: + * 1. ESP trailer: up to 255 bytes of padding, 1 byte for pad length, 1 byte for + * next header. + * 2. ESP authentication data: 16 bytes for ICV. + */ +#define MLX5E_MAX_TX_IPSEC_DS DIV_ROUND_UP(sizeof(struct mlx5_wqe_inline_seg) + \ + 255 + 1 + 1 + 16, MLX5_SEND_WQE_DS) + +/* 366 should be big enough to cover all L2, L3 and L4 headers with possible + * encapsulations. + */ +#define MLX5E_MAX_TX_INLINE_DS DIV_ROUND_UP(366 - INL_HDR_START_SZ + VLAN_HLEN, \ + MLX5_SEND_WQE_DS) + +/* Sync the calculation with mlx5e_sq_calc_wqe_attr. */ +#define MLX5E_MAX_TX_WQEBBS DIV_ROUND_UP(MLX5E_TX_WQE_EMPTY_DS_COUNT + \ + MLX5E_MAX_TX_INLINE_DS + \ + MLX5E_MAX_TX_IPSEC_DS + \ + MAX_SKB_FRAGS + 1, \ + MLX5_SEND_WQEBB_NUM_DS) + #define MLX5E_RX_ERR_CQE(cqe) (get_cqe_opcode(cqe) != MLX5_CQE_RESP_SEND) static inline @@ -58,6 +79,12 @@ bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq, int napi_budget); void mlx5e_free_txqsq_descs(struct mlx5e_txqsq *sq); static inline bool +mlx5e_skb_fifo_has_room(struct mlx5e_skb_fifo *fifo) +{ + return (*fifo->pc - *fifo->cc) < fifo->mask; +} + +static inline bool mlx5e_wqc_has_room_for(struct mlx5_wq_cyc *wq, u16 cc, u16 pc, u16 n) { return (mlx5_wq_cyc_ctr2ix(wq, cc - pc) >= n) || (cc == pc); @@ -418,6 +445,8 @@ mlx5e_set_eseg_swp(struct sk_buff *skb, struct mlx5_wqe_eth_seg *eseg, static inline u16 mlx5e_stop_room_for_wqe(struct mlx5_core_dev *mdev, u16 wqe_size) { + WARN_ON_ONCE(PAGE_SIZE / MLX5_SEND_WQE_BB < mlx5e_get_max_sq_wqebbs(mdev)); + /* A WQE must not cross the page boundary, hence two conditions: * 1. Its size must not exceed the page size. * 2. If the WQE size is X, and the space remaining in a page is less @@ -430,7 +459,6 @@ static inline u16 mlx5e_stop_room_for_wqe(struct mlx5_core_dev *mdev, u16 wqe_si "wqe_size %u is greater than max SQ WQEBBs %u", wqe_size, mlx5e_get_max_sq_wqebbs(mdev)); - return MLX5E_STOP_ROOM(wqe_size); } |