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xfrm: Separate ESP handling from segmentation for GRO packets.

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We change the ESP GSO handlers to only segment the packets.
The ESP handling and encryption is defered to validate_xmit_xfrm()
where this is done for non GRO packets too. This makes the code
more robust and prepares for asynchronous crypto handling.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Steffen Klassert
2017-12-20 10:41:31 +01:00
parent f39a5c01c3
commit 3dca3f38cf
7 changed files with 129 additions and 132 deletions
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5
net/ipv4/xfrm4_mode_tunnel.c
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@@ -105,18 +105,15 @@ static struct sk_buff *xfrm4_mode_tunnel_gso_segment(struct xfrm_state *x,
{
__skb_push(skb, skb->mac_len);
return skb_mac_gso_segment(skb, features);
}
static void xfrm4_mode_tunnel_xmit(struct xfrm_state *x, struct sk_buff *skb)
{
struct xfrm_offload *xo = xfrm_offload(skb);
if (xo->flags & XFRM_GSO_SEGMENT) {
skb->network_header = skb->network_header - x->props.header_len;
if (xo->flags & XFRM_GSO_SEGMENT)
skb->transport_header = skb->network_header +
sizeof(struct iphdr);
}
skb_reset_mac_len(skb);
pskb_pull(skb, skb->mac_len + x->props.header_len);