add unicast listener sockets

Signed-off-by: John Crispin <blogic@openwrt.org>

diff --git a/interface.c b/interface.c
index 2a695a1..bb4282f 100644 (file)
--- a/interface.c
+++ b/interface.c
@@ -335,7 +335,8 @@ reconnect_socket4(struct uloop_timeout *timeout)
        struct interface *iface = container_of(timeout, struct interface, reconnect);
        int yes = 1;
 
-       iface->fd.fd = usock(USOCK_UDP | USOCK_SERVER | USOCK_NONBLOCK | USOCK_IPV4ONLY, iface->mcast_addr, "5353");
+       iface->fd.fd = usock(USOCK_UDP | USOCK_SERVER | USOCK_NONBLOCK | USOCK_IPV4ONLY,
+               (iface->multicast) ? (iface->mcast_addr) : (iface->v4_addrs), "5353");
        if (iface->fd.fd < 0) {
                fprintf(stderr, "failed to add listener %s: %s\n", iface->mcast_addr, strerror(errno));
                goto retry;
@@ -350,7 +351,7 @@ reconnect_socket4(struct uloop_timeout *timeout)
        if (setsockopt(iface->fd.fd, IPPROTO_IP, IP_PKTINFO, &yes, sizeof(yes)) < 0)
                fprintf(stderr, "ioctl failed: IP_PKTINFO\n");
 
-       if (interface_mcast_setup4(iface)) {
+       if (iface->multicast && interface_mcast_setup4(iface)) {
                iface->fd.fd = -1;
                goto retry;
        }
@@ -392,7 +393,7 @@ reconnect_socket6(struct uloop_timeout *timeout)
        if (setsockopt(iface->fd.fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) < 0)
                fprintf(stderr, "ioctl failed: SO_REUSEADDR\n");
 
-       if (interface_socket_setup6(iface)) {
+       if (iface->multicast && interface_socket_setup6(iface)) {
                iface->fd.fd = -1;
                goto retry;
        }
@@ -436,7 +437,7 @@ iface_update_cb(struct vlist_tree *tree, struct vlist_node *node_new,
        }
 }
 
-static struct interface* _interface_add(const char *name, int v6)
+static struct interface* _interface_add(const char *name, int multicast, int v6)
 {
        struct interface *iface;
        char *name_buf;
@@ -451,6 +452,7 @@ static struct interface* _interface_add(const char *name, int v6)
        iface->id = id_buf;
        iface->ifindex = if_nametoindex(name);
        iface->fd.fd = -1;
+       iface->multicast = multicast;
        iface->v6 = v6;
        if (v6)
                iface->mcast_addr = MCAST_ADDR6;
@@ -470,7 +472,7 @@ error:
 
 int interface_add(const char *name)
 {
-       struct interface *v4 = NULL, *v6 = NULL;
+       struct interface *v4 = NULL, *v6 = NULL, *unicast;
        struct ifaddrs *ifap, *ifa;
 
        getifaddrs(&ifap);
@@ -484,12 +486,20 @@ int interface_add(const char *name)
                        if (cfg_proto && (cfg_proto != 4))
                                continue;
 
-                       v4 = _interface_add(name, 0);
+                       v4 = _interface_add(name, 1, 0);
                        if (!v4)
                                continue;
 
                        sa = (struct sockaddr_in *) ifa->ifa_addr;
                        memcpy(&v4->v4_addr, &sa->sin_addr, sizeof(v4->v4_addr));
+                       inet_ntop(AF_INET, &sa->sin_addr, v4->v4_addrs, sizeof(v4->v4_addrs));
+
+                       unicast = _interface_add(name, 0, 0);
+                       if (!unicast)
+                               continue;
+
+                       memcpy(&unicast->v4_addr, &sa->sin_addr, sizeof(unicast->v4_addr));
+                       inet_ntop(AF_INET, &sa->sin_addr, unicast->v4_addrs, sizeof(unicast->v4_addrs));
                }
 
                if (ifa->ifa_addr->sa_family == AF_INET6 && !v6) {
@@ -503,10 +513,18 @@ int interface_add(const char *name)
                        if (memcmp(&sa6->sin6_addr, &ll_prefix, 2))
                                continue;
 
-                       v6 = _interface_add(name, 1);
+                       v6 = _interface_add(name, 1, 1);
                        if (!v6)
                                continue;
                        memcpy(&v6->v6_addr, &sa6->sin6_addr, sizeof(v6->v6_addr));
+                       inet_ntop(AF_INET6, &sa6->sin6_addr, v6->v6_addrs, sizeof(v6->v6_addrs));
+
+                       unicast = _interface_add(name, 0, 1);
+                       if (!unicast)
+                               continue;
+
+                       memcpy(&unicast->v6_addr, &sa6->sin6_addr, sizeof(unicast->v6_addr));
+                       inet_ntop(AF_INET6, &sa6->sin6_addr, unicast->v6_addrs, sizeof(unicast->v6_addrs));
                }
        }
 

diff --git a/interface.h b/interface.h
index fcbc3e6..2f7aea4 100644 (file)
--- a/interface.h
+++ b/interface.h
@@ -34,9 +34,13 @@ struct interface {
        struct uloop_timeout reconnect;
 
        int v6;
+       int multicast;
        int ifindex;
+
        struct in_addr v4_addr;
        struct in6_addr v6_addr;
+       char v4_addrs[16];
+       char v6_addrs[64];
 
        struct uloop_timeout announce_timer;
        int announce_state;