Add parsing function for raw hardware header

This patch adds support for the parsing of NFULA_HWTYPE, NFULA_HWHEADER,
and NFULA_HWLEN part of the NFLOG message. This permits to have a ULOG
like behaviour but thanks to NFULA_HWTYPE we will be able to parse the
message cleanly in userspace.

Signed-off-by: Eric Leblond <eric@inl.fr>
Signed-off-by: Patrick McHardy <kaber@trash.net>

1 files changed, 16 insertions, 0 deletions

diff --git a/src/libnetfilter_log.c b/src/libnetfilter_log.c
index 2019b0c..6c0936e 100644
--- a/src/libnetfilter_log.c
+++ b/src/libnetfilter_log.c
@@ -385,6 +385,22 @@ struct nfulnl_msg_packet_hdr *nflog_get_msg_packet_hdr(struct nflog_data *nfad)
 					 struct nfulnl_msg_packet_hdr);
 }
 
+
+u_int16_t nflog_get_hwtype(struct nflog_data *nfad)
+{
+	return ntohs(nfnl_get_data(nfad->nfa, NFULA_HWTYPE, u_int16_t));
+}
+
+u_int16_t nflog_get_msg_packet_hwhdrlen(struct nflog_data *nfad)
+{
+	return ntohs(nfnl_get_data(nfad->nfa, NFULA_HWLEN, u_int16_t));
+}
+
+char *nflog_get_msg_packet_hwhdr(struct nflog_data *nfad)
+{
+	return nfnl_get_pointer_to_data(nfad->nfa, NFULA_HWHEADER, char);
+}
+
 u_int32_t nflog_get_nfmark(struct nflog_data *nfad)
 {
 	return ntohl(nfnl_get_data(nfad->nfa, NFULA_MARK, u_int32_t));