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41 lines
1.0 KiB
41 lines
1.0 KiB
From 676cf8a61ed240d0a86d471ef419f45ba35dba80 Mon Sep 17 00:00:00 2001 |
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From: Denis Ovsienko <infrastation@yandex.ru> |
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Date: Thu, 5 Dec 2013 14:54:14 +0400 |
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Subject: [PATCH] NFLOG: don't crash trying to filter at link layer |
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Before: |
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@ tcpdump -i nflog icmp |
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tcpdump: WARNING: SIOCGIFADDR: nflog: No such device |
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Aborted (core dumped) |
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After: |
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@ tcpdump -i nflog icmp |
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tcpdump: WARNING: SIOCGIFADDR: nflog: No such device |
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tcpdump: NFLOG link-layer type filtering not implemented |
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--- |
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gencode.c | 7 +++++++ |
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1 file changed, 7 insertions(+) |
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diff --git a/gencode.c b/gencode.c |
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index 7bb07fb..d58ea30 100644 |
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--- a/gencode.c |
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+++ b/gencode.c |
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@@ -3410,6 +3410,13 @@ gen_linktype(proto) |
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case DLT_AX25_KISS: |
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bpf_error("AX.25 link-layer type filtering not implemented"); |
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+ |
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+ case DLT_NFLOG: |
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+ /* Using the fixed-size NFLOG header it is possible to tell only |
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+ * the address family of the packet, other meaningful data is |
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+ * either missing or behind TLVs. |
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+ */ |
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+ bpf_error("NFLOG link-layer type filtering not implemented"); |
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} |
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/* |
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-- |
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1.8.4.2 |
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