diff options
| 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/ipv4/xfrm4_input.c | |
| parent | 54ef207ac8f7a17d677082157a29f4df8499dc81 (diff) | |
| download | lwn-7785bba299a8dc8fe8390a0183dad3cafb3f1d80.tar.gz lwn-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/ipv4/xfrm4_input.c')
| -rw-r--r-- | net/ipv4/xfrm4_input.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/ipv4/xfrm4_input.c b/net/ipv4/xfrm4_input.c index 62e1e72db461..1fc684111ce6 100644 --- a/net/ipv4/xfrm4_input.c +++ b/net/ipv4/xfrm4_input.c @@ -40,6 +40,7 @@ drop: int xfrm4_transport_finish(struct sk_buff *skb, int async) { + struct xfrm_offload *xo = xfrm_offload(skb); struct iphdr *iph = ip_hdr(skb); iph->protocol = XFRM_MODE_SKB_CB(skb)->protocol; @@ -53,6 +54,11 @@ int xfrm4_transport_finish(struct sk_buff *skb, int async) iph->tot_len = htons(skb->len); ip_send_check(iph); + if (xo && (xo->flags & XFRM_GRO)) { + skb_mac_header_rebuild(skb); + return 0; + } + NF_HOOK(NFPROTO_IPV4, NF_INET_PRE_ROUTING, dev_net(skb->dev), NULL, skb, skb->dev, NULL, xfrm4_rcv_encap_finish); |