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authorSteffen Klassert <steffen.klassert@secunet.com>2017-02-15 09:39:44 +0100
committerSteffen Klassert <steffen.klassert@secunet.com>2017-02-15 09:39:44 +0100
commit25393d3fc055b76587fcc91627aee8c345400c3a (patch)
tree79405b1081d20494137ea9c4058073e98e75259d
parent5f114163f2f5eb2edbb49c4d3e0b405c7a8a7e2a (diff)
downloadop-kernel-dev-25393d3fc055b76587fcc91627aee8c345400c3a.zip
op-kernel-dev-25393d3fc055b76587fcc91627aee8c345400c3a.tar.gz
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>
-rw-r--r--include/linux/netdevice.h9
-rw-r--r--net/core/dev.c7
-rw-r--r--net/xfrm/Kconfig4
3 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index f9da3ac..9e5d1cd 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -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,
diff --git a/net/core/dev.c b/net/core/dev.c
index 3e1a601..64efbb9 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -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;
}
diff --git a/net/xfrm/Kconfig b/net/xfrm/Kconfig
index bda1a13..a484451 100644
--- a/net/xfrm/Kconfig
+++ b/net/xfrm/Kconfig
@@ -5,6 +5,10 @@ config XFRM
bool
depends on NET
+config XFRM_OFFLOAD
+ bool
+ depends on XFRM
+
config XFRM_ALGO
tristate
select XFRM
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