From 281216177a407f78cfd650ee4391afc487577193 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Mon, 18 Jun 2007 22:30:15 -0700 Subject: [PATCH] [XFRM]: Fix MTU calculation for non-ESP SAs My IPsec MTU optimization patch introduced a regression in MTU calculation for non-ESP SAs, the SA's header_len needs to be subtracted from the MTU if the transform doesn't provide a ->get_mtu() function. Reported-and-tested-by: Marco Berizzi Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- net/xfrm/xfrm_state.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index 85f3f43a6cca..dfacb9c2a6e3 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -1729,7 +1729,7 @@ int xfrm_state_mtu(struct xfrm_state *x, int mtu) x->type && x->type->get_mtu) res = x->type->get_mtu(x, mtu); else - res = mtu; + res = mtu - x->props.header_len; spin_unlock_bh(&x->lock); return res; }