diff options
Diffstat (limited to 'net/netfilter/nf_conntrack_helper.c')
| -rw-r--r-- | net/netfilter/nf_conntrack_helper.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c index 2f380f7..c08768d 100644 --- a/net/netfilter/nf_conntrack_helper.c +++ b/net/netfilter/nf_conntrack_helper.c @@ -28,6 +28,7 @@ #include <net/netfilter/nf_conntrack_helper.h> #include <net/netfilter/nf_conntrack_core.h> #include <net/netfilter/nf_conntrack_extend.h> +#include <net/netfilter/nf_log.h> static DEFINE_MUTEX(nf_ct_helper_mutex); struct hlist_head *nf_ct_helper_hash __read_mostly; @@ -332,6 +333,24 @@ nf_ct_helper_expectfn_find_by_symbol(const void *symbol) } EXPORT_SYMBOL_GPL(nf_ct_helper_expectfn_find_by_symbol); +__printf(3, 4) +void nf_ct_helper_log(struct sk_buff *skb, const struct nf_conn *ct, + const char *fmt, ...) +{ + const struct nf_conn_help *help; + const struct nf_conntrack_helper *helper; + + /* Called from the helper function, this call never fails */ + help = nfct_help(ct); + + /* rcu_read_lock()ed by nf_hook_slow */ + helper = rcu_dereference(help->helper); + + nf_log_packet(nf_ct_l3num(ct), 0, skb, NULL, NULL, NULL, + "nf_ct_%s: dropping packet: %s ", helper->name, fmt); +} +EXPORT_SYMBOL_GPL(nf_ct_helper_log); + int nf_conntrack_helper_register(struct nf_conntrack_helper *me) { int ret = 0; |