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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2017-02-15 09:40:00 +0100 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2017-02-15 11:04:11 +0100 |
| commit | 7785bba299a8dc8fe8390a0183dad3cafb3f1d80 (patch) | |
| tree | 33c29b31f0e66433b340998aa822bebe322aa116 /net/ipv6/xfrm6_input.c | |
| parent | 54ef207ac8f7a17d677082157a29f4df8499dc81 (diff) | |
| download | blackbird-op-linux-7785bba299a8dc8fe8390a0183dad3cafb3f1d80.tar.gz blackbird-op-linux-7785bba299a8dc8fe8390a0183dad3cafb3f1d80.zip | |
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/ipv6/xfrm6_input.c')
| -rw-r--r-- | net/ipv6/xfrm6_input.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/net/ipv6/xfrm6_input.c b/net/ipv6/xfrm6_input.c index 662fb2c3e765..08a807b29298 100644 --- a/net/ipv6/xfrm6_input.c +++ b/net/ipv6/xfrm6_input.c @@ -33,6 +33,8 @@ EXPORT_SYMBOL(xfrm6_rcv_spi); int xfrm6_transport_finish(struct sk_buff *skb, int async) { + struct xfrm_offload *xo = xfrm_offload(skb); + skb_network_header(skb)[IP6CB(skb)->nhoff] = XFRM_MODE_SKB_CB(skb)->protocol; @@ -44,6 +46,11 @@ int xfrm6_transport_finish(struct sk_buff *skb, int async) ipv6_hdr(skb)->payload_len = htons(skb->len); __skb_push(skb, skb->data - skb_network_header(skb)); + if (xo && (xo->flags & XFRM_GRO)) { + skb_mac_header_rebuild(skb); + return -1; + } + NF_HOOK(NFPROTO_IPV6, NF_INET_PRE_ROUTING, dev_net(skb->dev), NULL, skb, skb->dev, NULL, ip6_rcv_finish); |
