Commit 53ee9142 authored by Tariq Toukan's avatar Tariq Toukan Committed by Saeed Mahameed
Browse files

net/mlx5e: Switch to using napi_build_skb() 



Use napi_build_skb() which uses NAPI percpu caches to obtain
skbuff_head instead of inplace allocation.

napi_build_skb() calls napi_skb_cache_get(), which returns a cached
skb, or allocates a bulk of NAPI_SKB_CACHE_BULK (16) if cache is empty.

Performance test:
TCP single stream, single ring, single core, default MTU (1500B).

Before: 26.5 Gbits/sec
After:  30.1 Gbits/sec (+13.6%)

Signed-off-by: default avatarTariq Toukan <tariqt@nvidia.com>
Reviewed-by: default avatarGal Pressman <gal@nvidia.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@nvidia.com>
Reviewed-by: default avatarMaciej Fijalkowski <maciej.fijalkowski@intel.com>
Reviewed-by: default avatarAlexander Lobakin <aleksander.lobakin@intel.com>
parent 675f176b

drivers/net/ethernet/mellanox/mlx5/core/en_rx.c

+1 −1
Original line number Diff line number Diff line
@@ -1556,7 +1556,7 @@ struct sk_buff *mlx5e_build_linear_skb(struct mlx5e_rq *rq, void *va, 
				       u32 frag_size, u16 headroom,

				       u32 cqe_bcnt, u32 metasize)

{

	struct sk_buff *skb = build_skb(va, frag_size);

	struct sk_buff *skb = napi_build_skb(va, frag_size);



	if (unlikely(!skb)) {

		rq->stats->buff_alloc_err++;