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authorPablo Neira Ayuso <pablo@netfilter.org>2013-02-10 18:56:56 +0100
committerPablo Neira Ayuso <pablo@netfilter.org>2013-02-19 02:48:05 +0100
commitb20ab9cc63ca4605aec154cf54faa8455749f3f6 (patch)
tree2948bf6e3ea7cd4e7b776895f1d059c15c3d914f /include/net
parent38124328fb3ea0b28451071bf3c7401e35c91020 (diff)
netfilter: nf_ct_helper: better logging for dropped packets
Connection tracking helpers have to drop packets under exceptional situations. Currently, the user gets the following logging message in case that happens: nf_ct_%s: dropping packet ... However, depending on the helper, there are different reasons why a packet can be dropped. This patch modifies the existing code to provide more specific error message in the scope of each helper to help users to debug the reason why the packet has been dropped, ie: nf_ct_%s: dropping packet: reason ... Thanks to Joe Perches for many formatting suggestions. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/netfilter/nf_conntrack_helper.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_conntrack_helper.h b/include/net/netfilter/nf_conntrack_helper.h
index ce27edf5757..26c4ae5bfbb 100644
--- a/include/net/netfilter/nf_conntrack_helper.h
+++ b/include/net/netfilter/nf_conntrack_helper.h
@@ -100,6 +100,10 @@ struct nf_ct_helper_expectfn {
void (*expectfn)(struct nf_conn *ct, struct nf_conntrack_expect *exp);
};
+__printf(3,4)
+void nf_ct_helper_log(struct sk_buff *skb, const struct nf_conn *ct,
+ const char *fmt, ...);
+
void nf_ct_helper_expectfn_register(struct nf_ct_helper_expectfn *n);
void nf_ct_helper_expectfn_unregister(struct nf_ct_helper_expectfn *n);
struct nf_ct_helper_expectfn *