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netfilter: xt_TCPMSS: correct return value in tcpmss_mangle_packet 

commit 1205e1fa615805c9efa97303b552cf445965752a upstream.

In commit b396966c4 (netfilter: xt_TCPMSS: Fix missing fragmentation handling),
I attempted to add safe fragment handling to xt_TCPMSS.  However, Andy Padavan
of Project N56U correctly points out that returning XT_CONTINUE in this
function does not work.  The callers (tcpmss_tg[46]) expect to receive a value
of 0 in order to return XT_CONTINUE.

Signed-off-by: Phil Oester <kernel@linuxace.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
This commit is contained in:
Phil Oester 2013-09-01 08:32:21 -07:00 committed by syphyr
parent da5a9a34d0
commit 763893af4f
1 changed files with 1 additions and 1 deletions
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2
net/netfilter/xt_TCPMSS.c
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@ -59,7 +59,7 @@ tcpmss_mangle_packet(struct sk_buff *skb,
/* This is a fragment, no TCP header is available */
if (par->fragoff != 0)
return XT_CONTINUE;
return 0;
if (!skb_make_writable(skb, skb->len))
return -1;