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authorIlan Tayari <ilant@mellanox.com>2017-04-14 10:07:39 +0200
committerSteffen Klassert <steffen.klassert@secunet.com>2017-04-14 10:07:39 +0200
commitf1bd7d659ef0ba0f18c6f6afe7bbbd2410acffa0 (patch)
treeeb0c800ea60b7701158ad68bc566f514ac11f15d /net/xfrm
parentf6e27114a60a0afdec40db1bf7f6da37b565745a (diff)
xfrm: Add encapsulation header offsets while SKB is not encrypted
Both esp4 and esp6 used to assume that the SKB payload is encrypted and therefore the inner_network and inner_transport offsets are not relevant. When doing crypto offload in the NIC, this is no longer the case and the NIC driver needs these offsets so it can do TX TCP checksum offloading. This patch sets the inner_network and inner_transport members of the SKB, as well as encapsulation, to reflect the actual positions of these headers, and removes them only once encryption is done on the payload. Signed-off-by: Ilan Tayari <ilant@mellanox.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/xfrm')
-rw-r--r--net/xfrm/xfrm_output.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index a15088613a6c..8c0b6722aaa8 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -205,6 +205,7 @@ int xfrm_output(struct sock *sk, struct sk_buff *skb)
int err;
secpath_reset(skb);
+ skb->encapsulation = 0;
if (xfrm_dev_offload_ok(skb, x)) {
struct sec_path *sp;
@@ -218,6 +219,7 @@ int xfrm_output(struct sock *sk, struct sk_buff *skb)
if (skb->sp)
secpath_put(skb->sp);
skb->sp = sp;
+ skb->encapsulation = 1;
sp->olen++;
sp->xvec[skb->sp->len++] = x;