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extensions: fix ipv6_find_hdr upstream change fallout

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Upstream commit v3.5-rc1~109^2~138^2~4 ("netfilter: ip6_tables: add
flags parameter to ipv6_find_hdr()") changed the offset parameter of
ipv6_find_hdr() to be an input-output value. Moreover, if it is
non-zero, it MUST point to a valid IPv6 header embedded in the
packet.
This commit is contained in:
Florian Westphal
2012-07-20 17:28:38 +02:00
committed by Jan Engelhardt
parent 5f6cbbc663
commit 37e3a543a9
4 changed files with 7 additions and 4 deletions
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3
extensions/xt_length2.c
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@@ -203,7 +203,8 @@ length2_mt6(const struct sk_buff *skb, struct xt_action_param *par)
const struct xt_length_mtinfo2 *info = par->matchinfo;
const struct ipv6hdr *iph = ipv6_hdr(skb);
unsigned int len = 0, l4proto;
unsigned int thoff = par->thoff;
/* par->thoff would only set if ip6tables -p was used; so just use 0 */
unsigned int thoff = 0;
bool hit = true;
if (info->flags & XT_LENGTH_LAYER3) {