diff options
Diffstat (limited to 'target/linux/generic/backport-5.4/701-v5.5-net-core-use-listified-Rx-for-GRO_NORMAL-in-napi_gro.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/701-v5.5-net-core-use-listified-Rx-for-GRO_NORMAL-in-napi_gro.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/701-v5.5-net-core-use-listified-Rx-for-GRO_NORMAL-in-napi_gro.patch b/target/linux/generic/backport-5.4/701-v5.5-net-core-use-listified-Rx-for-GRO_NORMAL-in-napi_gro.patch new file mode 100644 index 0000000000..7be25f5338 --- /dev/null +++ b/target/linux/generic/backport-5.4/701-v5.5-net-core-use-listified-Rx-for-GRO_NORMAL-in-napi_gro.patch @@ -0,0 +1,51 @@ +From: Alexander Lobakin <alobakin@dlink.ru> +Date: Mon, 14 Oct 2019 11:00:33 +0300 +Subject: [PATCH] net: core: use listified Rx for GRO_NORMAL in + napi_gro_receive() + +Commit 323ebb61e32b4 ("net: use listified RX for handling GRO_NORMAL +skbs") made use of listified skb processing for the users of +napi_gro_frags(). +The same technique can be used in a way more common napi_gro_receive() +to speed up non-merged (GRO_NORMAL) skbs for a wide range of drivers +including gro_cells and mac80211 users. +This slightly changes the return value in cases where skb is being +dropped by the core stack, but it seems to have no impact on related +drivers' functionality. +gro_normal_batch is left untouched as it's very individual for every +single system configuration and might be tuned in manual order to +achieve an optimal performance. + +Signed-off-by: Alexander Lobakin <alobakin@dlink.ru> +Acked-by: Edward Cree <ecree@solarflare.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/net/core/dev.c ++++ b/net/core/dev.c +@@ -5601,12 +5601,13 @@ static void napi_skb_free_stolen_head(st + kmem_cache_free(skbuff_head_cache, skb); + } + +-static gro_result_t napi_skb_finish(gro_result_t ret, struct sk_buff *skb) ++static gro_result_t napi_skb_finish(struct napi_struct *napi, ++ struct sk_buff *skb, ++ gro_result_t ret) + { + switch (ret) { + case GRO_NORMAL: +- if (netif_receive_skb_internal(skb)) +- ret = GRO_DROP; ++ gro_normal_one(napi, skb); + break; + + case GRO_DROP: +@@ -5638,7 +5639,7 @@ gro_result_t napi_gro_receive(struct nap + + skb_gro_reset_offset(skb); + +- ret = napi_skb_finish(dev_gro_receive(napi, skb), skb); ++ ret = napi_skb_finish(napi, skb, dev_gro_receive(napi, skb)); + trace_napi_gro_receive_exit(ret); + + return ret; |