pimd: don't break with missing SO_BINDTODEVICE

This effectively a partial revert of commit 61ea395...
"pimd: Bind pim sockets to interface they are associated with"

Note this isn't really a proper fix, it just clears the build breakage
on BSD without improving the usage of multiple sockets.

Reported-by: Martin Winter <mwinter@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>

diff --git a/pimd/pim_sock.c b/pimd/pim_sock.c
index a2e166f79677b011af76df95fbf265c5a4604a83..e04cd4157531a53988b44580650698ab9882a943 100644 (file)
--- a/pimd/pim_sock.c
+++ b/pimd/pim_sock.c
@@ -79,6 +79,7 @@ int pim_socket_mcast(int protocol, struct in_addr ifaddr, int ifindex, int loop)
     return PIM_SOCK_ERR_SOCKET;
   }
 
+#ifdef SO_BINDTODEVICE
   if (protocol == IPPROTO_PIM)
     {
       int ret;
@@ -104,7 +105,10 @@ int pim_socket_mcast(int protocol, struct in_addr ifaddr, int ifindex, int loop)
          return PIM_SOCK_ERR_BIND;
        }
     }
-
+#else
+  /* XXX: use IP_PKTINFO / IP_RECVIF to emulate behaviour?  Or change to
+   * only use 1 socket for all interfaces? */
+#endif
 
   /* Needed to obtain destination address from recvmsg() */
   {