netfilter: restore rule tracing via nfnetlink_log

[cascardo/linux.git] / net / netfilter / nf_log.c

diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c
index 0d8448f..675d12c 100644 (file)
--- a/net/netfilter/nf_log.c
+++ b/net/netfilter/nf_log.c
@@ -212,6 +212,30 @@ void nf_log_packet(struct net *net,
 }
 EXPORT_SYMBOL(nf_log_packet);
 
+void nf_log_trace(struct net *net,
+                 u_int8_t pf,
+                 unsigned int hooknum,
+                 const struct sk_buff *skb,
+                 const struct net_device *in,
+                 const struct net_device *out,
+                 const struct nf_loginfo *loginfo, const char *fmt, ...)
+{
+       va_list args;
+       char prefix[NF_LOG_PREFIXLEN];
+       const struct nf_logger *logger;
+
+       rcu_read_lock();
+       logger = rcu_dereference(net->nf.nf_loggers[pf]);
+       if (logger) {
+               va_start(args, fmt);
+               vsnprintf(prefix, sizeof(prefix), fmt, args);
+               va_end(args);
+               logger->logfn(net, pf, hooknum, skb, in, out, loginfo, prefix);
+       }
+       rcu_read_unlock();
+}
+EXPORT_SYMBOL(nf_log_trace);
+
 #define S_SIZE (1024 - (sizeof(unsigned int) + 1))
 
 struct nf_log_buf {