conntrackd: add support for IPv6 kernel-space filtering via BSF

This patch adds the missing support to filter IPv6 from kernel-space
by means of the BSF API that libnetfilter_conntrack provides.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/cidr.c b/src/cidr.c
index d43dabc..91025b6 100644
--- a/src/cidr.c
+++ b/src/cidr.c
@@ -57,3 +57,14 @@ void ipv6_cidr2mask_net(uint8_t cidr, uint32_t *res)
 		res[i] = htonl(res[i]);
 }
 
+/* I need this function because I initially defined an IPv6 address as
+ * uint32 u[4]. Using char u[16] instead would allow to remove this. */
+void ipv6_addr2addr_host(uint32_t *addr, uint32_t *res)
+{
+	int i;
+
+	memset(res, 0, sizeof(uint32_t)*4);
+	for (i = 0;  i < 4; i++) {
+		res[i] = ntohl(addr[i]);
+	}
+}