util: Add sock_get_hwaddr

And use it in econserv, instead of the hardcoded lookup for tap0.

1 files changed, 2 insertions, 0 deletions

diff --git a/util.h b/util.h
index 4d0e27d..e033e21 100644
--- a/util.h
+++ b/util.h
@@ -15,6 +15,8 @@ uint32_t
 sock_get_peer_ipv4_addr(int fd);
 uint32_t
 sock_get_netmask(int fd);
+uint8_t *
+sock_get_hwaddr(int fd);
 
 void
 set_ip(uint8_t *ipbuf, uint32_t ip);