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net: core: use listified Rx for GRO_NORMAL in napi_gro_receive() 

commit 6570bc79c0 upstream.

Commit 323ebb61e3 ("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>
Signed-off-by: Hyunsoon Kim <h10.kim@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Alexander Lobakin 2019-10-14 11:00:33 +03:00 committed by Greg Kroah-Hartman
parent df0c47585c
commit de53545e8d
1 changed files with 5 additions and 4 deletions
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9
net/core/dev.c
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@ -5602,12 +5602,13 @@ static void napi_skb_free_stolen_head(struct sk_buff *skb)
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:
@ -5639,7 +5640,7 @@ gro_result_t napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
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;