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Date: Tue, 7 Feb 2017 10:14:09 +0100 From: Steffen Klassert <steffen.klassert@...unet.com> To: <netdev@...r.kernel.org> CC: Steffen Klassert <steffen.klassert@...unet.com>, David Miller <davem@...emloft.net>, Eric Dumazet <eric.dumazet@...il.com>, "Sowmini Varadhan" <sowmini.varadhan@...cle.com>, Ilan Tayari <ilant@...lanox.com> Subject: [PATCH RFC ipsec-next 3/5] 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@...unet.com> --- include/linux/netdevice.h | 9 +++++++++ net/core/dev.c | 7 +++++++ net/xfrm/Kconfig | 4 ++++ 3 files changed, 20 insertions(+) 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..0f5e606 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 (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 -- 1.9.1
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