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build: avoid use of unexported functions

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Fixes: "WARNING 'ipv6_find_hdr' [xt_TARPIT.ko] not found" in
<= linux-2.6.37.
This commit is contained in:
Jan Engelhardt
2012-07-16 05:36:41 +02:00
parent 4a8aab6aed
commit a2676585da
2 changed files with 8 additions and 6 deletions
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3
doc/changelog.txt
View File

@@ -4,6 +4,9 @@ HEAD
Fixes:
- build: export missing functions
(fixes: "WARNING 'xtnu_ipv6_find_hdr' [xt_TARPIT.ko] not found")
- build: avoid use of unexported functions
(fixes: "WARNING 'ipv6_find_hdr' [xt_TARPIT.ko] not found"
in <= linux-2.6.37)
v1.44 (2012-07-15)

11
extensions/xt_TARPIT.c
View File

@@ -374,16 +374,15 @@ static void tarpit_tcp6(struct sk_buff *oldskb, unsigned int hook,
ip6h->daddr = oip6h->saddr;
/* Adjust IP TTL */
if (mode == XTTARPIT_HONEYPOT)
if (mode == XTTARPIT_HONEYPOT) {
ip6h->hop_limit = 128;
else
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
} else {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 38)
ip6h->hop_limit = ip6_dst_hoplimit(skb_dst(nskb));
#else
ip6h->hop_limit = dst_metric(dst, RTAX_HOPLIMIT);
if (ip6h->hop_limit < 0)
ip6h->hop_limit = ipv6_get_hoplimit((skb_dst(nskb))->dev).
ip6h->hop_limit = dst_metric(skb_dst(nskb), RTAX_HOPLIMIT);
#endif
}
tcph = (struct tcphdr *)(skb_network_header(nskb) +
sizeof(struct ipv6hdr));