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[project/odhcpd.git] / src / ndp.c

diff --git a/src/ndp.c b/src/ndp.c
index 6021db960af9dc503fc1ad9cf87695f7837fb97a..28aaa664d32df1786333dedc9b0de9aa5be55c17 100644 (file)
--- a/src/ndp.c
+++ b/src/ndp.c
@@ -41,7 +41,7 @@ static void handle_solicit(void *addr, void *data, size_t len,
 
 static int ping_socket = -1;
 
-// Filter ICMPv6 messages of type neighbor soliciation
+/* Filter ICMPv6 messages of type neighbor soliciation */
 static struct sock_filter bpf[] = {
        BPF_STMT(BPF_LD | BPF_B | BPF_ABS, offsetof(struct ip6_hdr, ip6_nxt)),
        BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, IPPROTO_ICMPV6, 0, 3),
@@ -54,13 +54,13 @@ static struct sock_filter bpf[] = {
 static const struct sock_fprog bpf_prog = {sizeof(bpf) / sizeof(*bpf), bpf};
 static struct netevent_handler ndp_netevent_handler = { .cb = ndp_netevent_cb, };
 
-// Initialize NDP-proxy
+/* Initialize NDP-proxy */
 int ndp_init(void)
 {
        struct icmp6_filter filt;
        int val = 2, ret = 0;
 
-       // Open ICMPv6 socket
+       /* Open ICMPv6 socket */
        ping_socket = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_ICMPV6);
        if (ping_socket < 0) {
                syslog(LOG_ERR, "socket(AF_INET6): %m");
@@ -75,7 +75,7 @@ int ndp_init(void)
                goto out;
        }
 
-       // This is required by RFC 4861
+       /* This is required by RFC 4861 */
        val = 255;
        if (setsockopt(ping_socket, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
                                &val, sizeof(val)) < 0) {
@@ -91,7 +91,7 @@ int ndp_init(void)
                goto out;
        }
 
-       // Filter all packages, we only want to send
+       /* Filter all packages, we only want to send */
        ICMP6_FILTER_SETBLOCKALL(&filt);
        if (setsockopt(ping_socket, IPPROTO_ICMPV6, ICMP6_FILTER,
                                &filt, sizeof(filt)) < 0) {
@@ -192,7 +192,7 @@ int ndp_setup_interface(struct interface *iface, bool enable)
                iface->ndp_event.handle_dgram = handle_solicit;
                odhcpd_register(&iface->ndp_event);
 
-               // If we already were enabled dump is unnecessary, if not do dump
+               /* If we already were enabled dump is unnecessary, if not do dump */
                if (!dump_neigh)
                        netlink_dump_neigh_table(false);
                else
@@ -259,8 +259,8 @@ static void ndp_netevent_cb(unsigned long event, struct netevent_handler_info *i
        }
 }
 
-// Send an ICMP-ECHO. This is less for actually pinging but for the
-// neighbor cache to be kept up-to-date.
+/* Send an ICMP-ECHO. This is less for actually pinging but for the
+ * neighbor cache to be kept up-to-date. */
 static void ping6(struct in6_addr *addr,
                const struct interface *iface)
 {
@@ -277,7 +277,7 @@ static void ping6(struct in6_addr *addr,
        netlink_setup_route(addr, 128, iface->ifindex, NULL, 128, false);
 }
 
-// Handle solicitations
+/* Handle solicitations */
 static void handle_solicit(void *addr, void *data, size_t len,
                struct interface *iface, _unused void *dest)
 {
@@ -287,12 +287,12 @@ static void handle_solicit(void *addr, void *data, size_t len,
        char ipbuf[INET6_ADDRSTRLEN];
        uint8_t mac[6];
 
-       // Solicitation is for duplicate address detection
+       /* Solicitation is for duplicate address detection */
        bool ns_is_dad = IN6_IS_ADDR_UNSPECIFIED(&ip6->ip6_src);
 
-       // Don't process solicit messages on non relay interfaces
-       // Don't forward any non-DAD solicitation for external ifaces
-       // TODO: check if we should even forward DADs for them
+       /* Don't process solicit messages on non relay interfaces
+        * Don't forward any non-DAD solicitation for external ifaces
+        * TODO: check if we should even forward DADs for them */
        if (iface->ndp != MODE_RELAY || (iface->external && !ns_is_dad))
                return;
 
@@ -302,14 +302,14 @@ static void handle_solicit(void *addr, void *data, size_t len,
        if (IN6_IS_ADDR_LINKLOCAL(&req->nd_ns_target) ||
                        IN6_IS_ADDR_LOOPBACK(&req->nd_ns_target) ||
                        IN6_IS_ADDR_MULTICAST(&req->nd_ns_target))
-               return; // Invalid target
+               return; /* Invalid target */
 
        inet_ntop(AF_INET6, &req->nd_ns_target, ipbuf, sizeof(ipbuf));
        syslog(LOG_DEBUG, "Got a NS for %s%%%s", ipbuf, iface->ifname);
 
        odhcpd_get_mac(iface, mac);
        if (!memcmp(ll->sll_addr, mac, sizeof(mac)))
-               return; // Looped back
+               return; /* Looped back */
 
        struct interface *c;
        list_for_each_entry(c, &interfaces, head)
@@ -318,7 +318,7 @@ static void handle_solicit(void *addr, void *data, size_t len,
                        ping6(&req->nd_ns_target, c);
 }
 
-// Use rtnetlink to modify kernel routes
+/* Use rtnetlink to modify kernel routes */
 static void setup_route(struct in6_addr *addr, struct interface *iface, bool add)
 {
        char ipbuf[INET6_ADDRSTRLEN];