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| author | Patrick McHardy <kaber@trash.net> | 2009-08-25 15:33:08 +0200 |
|---|---|---|
| committer | Patrick McHardy <kaber@trash.net> | 2009-08-25 15:33:08 +0200 |
| commit | 74f7a6552c8d76ffc5e11eb8d9d6c07238b9ae77 (patch) | |
| tree | 8ab3e8dd361de4d2f11536523aa5f0113272050e /net/ipv4 | |
| parent | f3abc9b963e004b8c96cd7fbee6fd905f2bfd620 (diff) | |
| download | linux-74f7a6552c8d76ffc5e11eb8d9d6c07238b9ae77.tar.bz2 | |
netfilter: nf_conntrack: log packets dropped by helpers
Log packets dropped by helpers using the netfilter logging API. This
is useful in combination with nfnetlink_log to analyze those packets
in userspace for debugging.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c index 9ac2fdc36ecc..aa95bb82ee6c 100644 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c @@ -26,6 +26,7 @@ #include <net/netfilter/ipv4/nf_conntrack_ipv4.h> #include <net/netfilter/nf_nat_helper.h> #include <net/netfilter/ipv4/nf_defrag_ipv4.h> +#include <net/netfilter/nf_log.h> int (*nf_nat_seq_adjust_hook)(struct sk_buff *skb, struct nf_conn *ct, @@ -113,8 +114,11 @@ static unsigned int ipv4_confirm(unsigned int hooknum, ret = helper->help(skb, skb_network_offset(skb) + ip_hdrlen(skb), ct, ctinfo); - if (ret != NF_ACCEPT) + if (ret != NF_ACCEPT) { + nf_log_packet(NFPROTO_IPV4, hooknum, skb, in, out, NULL, + "nf_ct_%s: dropping packet", helper->name); return ret; + } if (test_bit(IPS_SEQ_ADJUST_BIT, &ct->status)) { typeof(nf_nat_seq_adjust_hook) seq_adjust; |