tcp, udp: Allow binding ports in init namespace to both tap and loopback

Traffic with loopback source address will be forwarded to the direct
loopback connection in the namespace, and the tap interface is used
for the rest.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/util.h b/util.h
index 1c11474..90d7f7c 100644
--- a/util.h
+++ b/util.h
@@ -115,11 +115,17 @@ void debug(const char *format, ...);
 #include <linux/ip.h>
 #include <limits.h>
 
+enum bind_type {
+	BIND_ANY = 0,
+	BIND_LOOPBACK,
+	BIND_EXT,
+};
+
 struct ctx;
 
 char *ipv6_l4hdr(struct ipv6hdr *ip6h, uint8_t *proto);
-int sock_l4(struct ctx *c, int af, uint8_t proto, uint16_t port, int lo,
-	    uint32_t data);
+int sock_l4(struct ctx *c, int af, uint8_t proto, uint16_t port,
+	    enum bind_type bind_addr, uint32_t data);
 int timespec_diff_ms(struct timespec *a, struct timespec *b);
 void bitmap_set(uint8_t *map, int bit);
 void bitmap_clear(uint8_t *map, int bit);