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net/mlx5e: Put the common XDP code into a function

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The same code that returns XDP frames and releases pages is used both in
mlx5e_poll_xdpsq_cq and mlx5e_free_xdpsq_descs. Create a function that
cleans up an MPWQE.

Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Maxim Mikityanskiy
2019-03-01 13:12:55 +02:00
committed by Saeed Mahameed
parent a708fb7b1f
commit 33e10924a0
1 changed files with 27 additions and 36 deletions
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63
drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
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@@ -275,12 +275,33 @@ static bool mlx5e_xmit_xdp_frame(struct mlx5e_xdpsq *sq, struct mlx5e_xdp_info *
return true;
}
static void mlx5e_free_xdpsq_desc(struct mlx5e_xdpsq *sq,
struct mlx5e_xdp_wqe_info *wi,
struct mlx5e_rq *rq,
bool recycle)
{
struct mlx5e_xdp_info_fifo *xdpi_fifo = &sq->db.xdpi_fifo;
u16 i;
for (i = 0; i < wi->num_pkts; i++) {
struct mlx5e_xdp_info xdpi = mlx5e_xdpi_fifo_pop(xdpi_fifo);
if (rq) {
/* XDP_TX */
mlx5e_page_release(rq, &xdpi.di, recycle);
} else {
/* XDP_REDIRECT */
dma_unmap_single(sq->pdev, xdpi.dma_addr,
xdpi.xdpf->len, DMA_TO_DEVICE);
xdp_return_frame(xdpi.xdpf);
}
}
}
bool mlx5e_poll_xdpsq_cq(struct mlx5e_cq *cq, struct mlx5e_rq *rq)
{
struct mlx5e_xdp_info_fifo *xdpi_fifo;
struct mlx5e_xdpsq *sq;
struct mlx5_cqe64 *cqe;
bool is_redirect;
u16 sqcc;
int i;
@@ -293,9 +314,6 @@ bool mlx5e_poll_xdpsq_cq(struct mlx5e_cq *cq, struct mlx5e_rq *rq)
if (!cqe)
return false;
is_redirect = !rq;
xdpi_fifo = &sq->db.xdpi_fifo;
/* sq->cc must be updated only after mlx5_cqwq_update_db_record(),
* otherwise a cq overrun may occur
*/
@@ -317,7 +335,7 @@ bool mlx5e_poll_xdpsq_cq(struct mlx5e_cq *cq, struct mlx5e_rq *rq)
do {
struct mlx5e_xdp_wqe_info *wi;
u16 ci, j;
u16 ci;
last_wqe = (sqcc == wqe_counter);
ci = mlx5_wq_cyc_ctr2ix(&sq->wq, sqcc);
@@ -325,19 +343,7 @@ bool mlx5e_poll_xdpsq_cq(struct mlx5e_cq *cq, struct mlx5e_rq *rq)
sqcc += wi->num_wqebbs;
for (j = 0; j < wi->num_pkts; j++) {
struct mlx5e_xdp_info xdpi =
mlx5e_xdpi_fifo_pop(xdpi_fifo);
if (is_redirect) {
dma_unmap_single(sq->pdev, xdpi.dma_addr,
xdpi.xdpf->len, DMA_TO_DEVICE);
xdp_return_frame(xdpi.xdpf);
} else {
/* Recycle RX page */
mlx5e_page_release(rq, &xdpi.di, true);
}
}
mlx5e_free_xdpsq_desc(sq, wi, rq, true);
} while (!last_wqe);
} while ((++i < MLX5E_TX_CQ_POLL_BUDGET) && (cqe = mlx5_cqwq_get_cqe(&cq->wq)));
@@ -354,31 +360,16 @@ 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)
{
struct mlx5e_xdp_info_fifo *xdpi_fifo = &sq->db.xdpi_fifo;
bool is_redirect = !rq;
while (sq->cc != sq->pc) {
struct mlx5e_xdp_wqe_info *wi;
u16 ci, i;
u16 ci;
ci = mlx5_wq_cyc_ctr2ix(&sq->wq, sq->cc);
wi = &sq->db.wqe_info[ci];
sq->cc += wi->num_wqebbs;
for (i = 0; i < wi->num_pkts; i++) {
struct mlx5e_xdp_info xdpi =
mlx5e_xdpi_fifo_pop(xdpi_fifo);
if (is_redirect) {
dma_unmap_single(sq->pdev, xdpi.dma_addr,
xdpi.xdpf->len, DMA_TO_DEVICE);
xdp_return_frame(xdpi.xdpf);
} else {
/* Recycle RX page */
mlx5e_page_release(rq, &xdpi.di, false);
}
}
mlx5e_free_xdpsq_desc(sq, wi, rq, false);
}
}