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authorSteffen Klassert <steffen.klassert@secunet.com>2017-04-14 10:07:49 +0200
committerSteffen Klassert <steffen.klassert@secunet.com>2017-04-14 10:07:49 +0200
commitbcd1f8a45e7d5804e4f7bd78a91348cfce3cb74a (patch)
tree16bbfdf78347e85972881ae8de3c32c7a775fff2 /net/ipv6/esp6_offload.c
parentf1bd7d659ef0ba0f18c6f6afe7bbbd2410acffa0 (diff)
downloadlinux-stericsson-bcd1f8a45e7d5804e4f7bd78a91348cfce3cb74a.tar.gz
xfrm: Prepare the GRO codepath for hardware offloading.
On IPsec hardware offloading, we already get a secpath with valid state attached when the packet enters the GRO handlers. So check for hardware offload and skip the state lookup in this case. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv6/esp6_offload.c')
-rw-r--r--net/ipv6/esp6_offload.c42
1 files changed, 23 insertions, 19 deletions
diff --git a/net/ipv6/esp6_offload.c b/net/ipv6/esp6_offload.c
index 06e972135ab0..1cceeee7cc33 100644
--- a/net/ipv6/esp6_offload.c
+++ b/net/ipv6/esp6_offload.c
@@ -45,27 +45,31 @@ static struct sk_buff **esp6_gro_receive(struct sk_buff **head,
if ((err = xfrm_parse_spi(skb, IPPROTO_ESP, &spi, &seq)) != 0)
goto out;
- err = secpath_set(skb);
- if (err)
- goto out;
-
- if (skb->sp->len == XFRM_MAX_DEPTH)
- goto out;
-
- x = xfrm_state_lookup(dev_net(skb->dev), skb->mark,
- (xfrm_address_t *)&ipv6_hdr(skb)->daddr,
- spi, IPPROTO_ESP, AF_INET6);
- if (!x)
- goto out;
-
- skb->sp->xvec[skb->sp->len++] = x;
- skb->sp->olen++;
-
xo = xfrm_offload(skb);
- if (!xo) {
- xfrm_state_put(x);
- goto out;
+ if (!xo || !(xo->flags & CRYPTO_DONE)) {
+ err = secpath_set(skb);
+ if (err)
+ goto out;
+
+ if (skb->sp->len == XFRM_MAX_DEPTH)
+ goto out;
+
+ x = xfrm_state_lookup(dev_net(skb->dev), skb->mark,
+ (xfrm_address_t *)&ipv6_hdr(skb)->daddr,
+ spi, IPPROTO_ESP, AF_INET6);
+ if (!x)
+ goto out;
+
+ skb->sp->xvec[skb->sp->len++] = x;
+ skb->sp->olen++;
+
+ xo = xfrm_offload(skb);
+ if (!xo) {
+ xfrm_state_put(x);
+ goto out;
+ }
}
+
xo->flags |= XFRM_GRO;
XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip6 = NULL;