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net/mlx5e: XDP, Slight enhancement for WQE fetch function

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Instead of passing an output param, let function return the
WQE pointer.
In addition, pass &pi so it gets its value in the function,
and save the redundant assignment that comes after it.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Tariq Toukan 2019-07-14 17:50:51 +03:00 committed by Saeed Mahameed
parent 6c085a8aab
commit 7cf6f811b7
2 changed files with 9 additions and 8 deletions
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4
drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
View File

@ -187,14 +187,12 @@ static void mlx5e_xdp_mpwqe_session_start(struct mlx5e_xdpsq *sq)
if (unlikely(contig_wqebbs < MLX5_SEND_WQE_MAX_WQEBBS))
mlx5e_fill_xdpsq_frag_edge(sq, wq, pi, contig_wqebbs);
mlx5e_xdpsq_fetch_wqe(sq, &session->wqe);
session->wqe = mlx5e_xdpsq_fetch_wqe(sq, &pi);
prefetchw(session->wqe->data);
session->ds_count = MLX5E_XDP_TX_EMPTY_DS_COUNT;
session->pkt_count = 0;
pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc);
mlx5e_xdp_update_inline_state(sq);
stats->mpwqe++;

13
drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h
View File

@ -190,14 +190,17 @@ mlx5e_xdp_mpwqe_add_dseg(struct mlx5e_xdpsq *sq,
session->ds_count++;
}
static inline void mlx5e_xdpsq_fetch_wqe(struct mlx5e_xdpsq *sq,
struct mlx5e_tx_wqe **wqe)
static inline struct mlx5e_tx_wqe *
mlx5e_xdpsq_fetch_wqe(struct mlx5e_xdpsq *sq, u16 *pi)
{
struct mlx5_wq_cyc *wq = &sq->wq;
u16 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc);
struct mlx5e_tx_wqe *wqe;
*wqe = mlx5_wq_cyc_get_wqe(wq, pi);
memset(*wqe, 0, sizeof(**wqe));
*pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc);
wqe = mlx5_wq_cyc_get_wqe(wq, *pi);
memset(wqe, 0, sizeof(*wqe));
return wqe;
}
static inline void