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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2017-02-15 11:40:00 +0300 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2017-02-15 13:04:11 +0300 |
| commit | 7785bba299a8dc8fe8390a0183dad3cafb3f1d80 (patch) | |
| tree | 33c29b31f0e66433b340998aa822bebe322aa116 /net/ipv4/xfrm4_mode_transport.c | |
| parent | 54ef207ac8f7a17d677082157a29f4df8499dc81 (diff) | |
| download | linux-7785bba299a8dc8fe8390a0183dad3cafb3f1d80.tar.xz | |
esp: Add a software GRO codepath
This patch adds GRO ifrastructure and callbacks for ESP on
ipv4 and ipv6.
In case the GRO layer detects an ESP packet, the
esp{4,6}_gro_receive() function does a xfrm state lookup
and calls the xfrm input layer if it finds a matching state.
The packet will be decapsulated and reinjected it into layer 2.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv4/xfrm4_mode_transport.c')
| -rw-r--r-- | net/ipv4/xfrm4_mode_transport.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv4/xfrm4_mode_transport.c b/net/ipv4/xfrm4_mode_transport.c index fd840c7d75ea..4acc0508c5eb 100644 --- a/net/ipv4/xfrm4_mode_transport.c +++ b/net/ipv4/xfrm4_mode_transport.c @@ -43,6 +43,7 @@ static int xfrm4_transport_output(struct xfrm_state *x, struct sk_buff *skb) static int xfrm4_transport_input(struct xfrm_state *x, struct sk_buff *skb) { int ihl = skb->data - skb_transport_header(skb); + struct xfrm_offload *xo = xfrm_offload(skb); if (skb->transport_header != skb->network_header) { memmove(skb_transport_header(skb), @@ -50,7 +51,8 @@ static int xfrm4_transport_input(struct xfrm_state *x, struct sk_buff *skb) skb->network_header = skb->transport_header; } ip_hdr(skb)->tot_len = htons(skb->len + ihl); - skb_reset_transport_header(skb); + if (!xo || !(xo->flags & XFRM_GRO)) + skb_reset_transport_header(skb); return 0; } |