net/mlx5e: Refactor retrival of skb from rx completion element (cqe)
Factor the relevant code into a static inline helper (skb_from_cqe)
doing that.
Move the call to napi_gro_receive to be carried out just
after mlx5e_complete_rx_cqe returns.
Both changes are to be used for the VF representor as well
in the next commit.
This patch doesn't change any functionality.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
index 0a81bd3..e836e47 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
@@ -629,7 +629,6 @@
rq->stats.packets++;
rq->stats.bytes += cqe_bcnt;
mlx5e_build_rx_skb(cqe, cqe_bcnt, rq, skb);
- napi_gro_receive(rq->cq.napi, skb);
}
static inline void mlx5e_xmit_xdp_doorbell(struct mlx5e_sq *sq)
@@ -733,20 +732,15 @@
}
}
-void mlx5e_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
+static inline
+struct sk_buff *skb_from_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe,
+ u16 wqe_counter, u32 cqe_bcnt)
{
struct bpf_prog *xdp_prog = READ_ONCE(rq->xdp_prog);
struct mlx5e_dma_info *di;
- struct mlx5e_rx_wqe *wqe;
- __be16 wqe_counter_be;
struct sk_buff *skb;
- u16 wqe_counter;
void *va, *data;
- u32 cqe_bcnt;
- wqe_counter_be = cqe->wqe_counter;
- wqe_counter = be16_to_cpu(wqe_counter_be);
- wqe = mlx5_wq_ll_get_wqe(&rq->wq, wqe_counter);
di = &rq->dma_info[wqe_counter];
va = page_address(di->page);
data = va + MLX5_RX_HEADROOM;
@@ -757,22 +751,21 @@
rq->buff.wqe_sz,
DMA_FROM_DEVICE);
prefetch(data);
- cqe_bcnt = be32_to_cpu(cqe->byte_cnt);
if (unlikely((cqe->op_own >> 4) != MLX5_CQE_RESP_SEND)) {
rq->stats.wqe_err++;
mlx5e_page_release(rq, di, true);
- goto wq_ll_pop;
+ return NULL;
}
if (mlx5e_xdp_handle(rq, xdp_prog, di, data, cqe_bcnt))
- goto wq_ll_pop; /* page/packet was consumed by XDP */
+ return NULL; /* page/packet was consumed by XDP */
skb = build_skb(va, RQ_PAGE_SIZE(rq));
if (unlikely(!skb)) {
rq->stats.buff_alloc_err++;
mlx5e_page_release(rq, di, true);
- goto wq_ll_pop;
+ return NULL;
}
/* queue up for recycling ..*/
@@ -782,7 +775,28 @@
skb_reserve(skb, MLX5_RX_HEADROOM);
skb_put(skb, cqe_bcnt);
+ return skb;
+}
+
+void mlx5e_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
+{
+ struct mlx5e_rx_wqe *wqe;
+ __be16 wqe_counter_be;
+ struct sk_buff *skb;
+ u16 wqe_counter;
+ u32 cqe_bcnt;
+
+ wqe_counter_be = cqe->wqe_counter;
+ wqe_counter = be16_to_cpu(wqe_counter_be);
+ wqe = mlx5_wq_ll_get_wqe(&rq->wq, wqe_counter);
+ cqe_bcnt = be32_to_cpu(cqe->byte_cnt);
+
+ skb = skb_from_cqe(rq, cqe, wqe_counter, cqe_bcnt);
+ if (!skb)
+ goto wq_ll_pop;
+
mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb);
+ napi_gro_receive(rq->cq.napi, skb);
wq_ll_pop:
mlx5_wq_ll_pop(&rq->wq, wqe_counter_be,
@@ -861,6 +875,7 @@
mlx5e_mpwqe_fill_rx_skb(rq, cqe, wi, cqe_bcnt, skb);
mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb);
+ napi_gro_receive(rq->cq.napi, skb);
mpwrq_cqe_out:
if (likely(wi->consumed_strides < rq->mpwqe_num_strides))