mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
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aafcea0542
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27840 3c298f89-4303-0410-b956-a3cf2f4a3e73
17 lines
607 B
Diff
17 lines
607 B
Diff
--- a/net/ipv4/netfilter/ip_tables.c
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+++ b/net/ipv4/netfilter/ip_tables.c
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@@ -93,9 +93,11 @@ ip_packet_match(const struct iphdr *ip,
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if (ipinfo->flags & IPT_F_NO_DEF_MATCH)
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return true;
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- if (FWINV((ip->saddr&ipinfo->smsk.s_addr) != ipinfo->src.s_addr,
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+ if (FWINV(ipinfo->smsk.s_addr &&
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+ (ip->saddr&ipinfo->smsk.s_addr) != ipinfo->src.s_addr,
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IPT_INV_SRCIP) ||
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- FWINV((ip->daddr&ipinfo->dmsk.s_addr) != ipinfo->dst.s_addr,
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+ FWINV(ipinfo->smsk.s_addr &&
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+ (ip->daddr&ipinfo->dmsk.s_addr) != ipinfo->dst.s_addr,
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IPT_INV_DSTIP)) {
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dprintf("Source or dest mismatch.\n");
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