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authorLi RongQing <roy.qing.li@gmail.com>2012-12-28 12:07:16 +0400
committerSteffen Klassert <steffen.klassert@secunet.com>2013-01-08 15:41:30 +0400
commit7143dfac692cd25d48a24dbe8323bc17af95b4ec (patch)
treeb7bd65be7b147b50b4c09f9c1523ed7097586750 /net/ipv4/esp4.c
parentc7e2e1d72ed7707239d20525e0ebcad7e3303659 (diff)
downloadlinux-7143dfac692cd25d48a24dbe8323bc17af95b4ec.tar.xz
ah4/esp4: set transport header correctly for IPsec tunnel mode.
IPsec tunnel does not set ECN field to CE in inner header when the ECN field in the outer header is CE, and the ECN field in the inner header is ECT(0) or ECT(1). The cause is ipip_hdr() does not return the correct address of inner header since skb->transport-header is not the inner header after esp_input_done2(), or ah_input(). Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv4/esp4.c')
-rw-r--r--net/ipv4/esp4.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index b61e9deb7c7e..fd26ff4f3eac 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -346,7 +346,10 @@ static int esp_input_done2(struct sk_buff *skb, int err)
pskb_trim(skb, skb->len - alen - padlen - 2);
__skb_pull(skb, hlen);
- skb_set_transport_header(skb, -ihl);
+ if (x->props.mode == XFRM_MODE_TUNNEL)
+ skb_reset_transport_header(skb);
+ else
+ skb_set_transport_header(skb, -ihl);
err = nexthdr[1];