| Message ID | 20110606064847.GD31505@secunet.com |
|---|---|
| State | Accepted, archived |
| Delegated to: | David Miller |
| Headers | show |
From: Steffen Klassert <steffen.klassert@secunet.com> Date: Mon, 6 Jun 2011 08:48:47 +0200 > We assume that transhdrlen is positive on the first fragment > which is wrong for raw packets. So we don't add exthdrlen to the > packet size for raw packets. This leads to a reallocation on IPsec > because we have not enough headroom on the skb to place the IPsec > headers. This patch fixes this by adding exthdrlen to the packet > size whenever the send queue of the socket is empty. This issue was > introduced with git commit 1470ddf7 (inet: Remove explicit write > references to sk/inet in ip_append_data) > > Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index a16859b..6b894d4 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -799,7 +799,9 @@ static int __ip_append_data(struct sock *sk, int csummode = CHECKSUM_NONE; struct rtable *rt = (struct rtable *)cork->dst; - exthdrlen = transhdrlen ? rt->dst.header_len : 0; + skb = skb_peek_tail(queue); + + exthdrlen = !skb ? rt->dst.header_len : 0; length += exthdrlen; transhdrlen += exthdrlen; mtu = cork->fragsize; @@ -825,8 +827,6 @@ static int __ip_append_data(struct sock *sk, !exthdrlen) csummode = CHECKSUM_PARTIAL; - skb = skb_peek_tail(queue); - cork->length += length; if (((length > mtu) || (skb && skb_is_gso(skb))) && (sk->sk_protocol == IPPROTO_UDP) &&
We assume that transhdrlen is positive on the first fragment which is wrong for raw packets. So we don't add exthdrlen to the packet size for raw packets. This leads to a reallocation on IPsec because we have not enough headroom on the skb to place the IPsec headers. This patch fixes this by adding exthdrlen to the packet size whenever the send queue of the socket is empty. This issue was introduced with git commit 1470ddf7 (inet: Remove explicit write references to sk/inet in ip_append_data) Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> --- net/ipv4/ip_output.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-)