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net: Prepare gro for packet consuming gro callbacks 

The upcomming IPsec ESP gro callbacks will consume the skb,
so prepare for that.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Steffen Klassert 2017-02-15 09:39:44 +01:00
parent 5f114163f2
commit 25393d3fc0
3 changed files with 20 additions and 0 deletions
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9
include/linux/netdevice.h
View File

@ -352,6 +352,7 @@ enum gro_result {
GRO_HELD,
GRO_NORMAL,
GRO_DROP,
GRO_CONSUMED,
};
typedef enum gro_result gro_result_t;
@ -2661,10 +2662,18 @@ static inline void skb_gro_remcsum_cleanup(struct sk_buff *skb,
remcsum_unadjust((__sum16 *)ptr, grc->delta);
}
#ifdef CONFIG_XFRM_OFFLOAD
static inline void skb_gro_flush_final(struct sk_buff *skb, struct sk_buff **pp, int flush)
{
if (PTR_ERR(pp) != -EINPROGRESS)
NAPI_GRO_CB(skb)->flush |= flush;
}
#else
static inline void skb_gro_flush_final(struct sk_buff *skb, struct sk_buff **pp, int flush)
{
NAPI_GRO_CB(skb)->flush |= flush;
}
#endif
static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev,
unsigned short type,

7
net/core/dev.c
View File

@ -4505,6 +4505,11 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
if (&ptype->list == head)
goto normal;
if (IS_ERR(pp) && PTR_ERR(pp) == -EINPROGRESS) {
ret = GRO_CONSUMED;
goto ok;
}
same_flow = NAPI_GRO_CB(skb)->same_flow;
ret = NAPI_GRO_CB(skb)->free ? GRO_MERGED_FREE : GRO_MERGED;
@ -4609,6 +4614,7 @@ static gro_result_t napi_skb_finish(gro_result_t ret, struct sk_buff *skb)
case GRO_HELD:
case GRO_MERGED:
case GRO_CONSUMED:
break;
}
@ -4680,6 +4686,7 @@ static gro_result_t napi_frags_finish(struct napi_struct *napi,
break;
case GRO_MERGED:
case GRO_CONSUMED:
break;
}

4
net/xfrm/Kconfig
View File

@ -5,6 +5,10 @@ config XFRM
bool
depends on NET
config XFRM_OFFLOAD
bool
depends on XFRM
config XFRM_ALGO
tristate
select XFRM