Changeset 83781a22 in mainline for uspace/lib/c/generic/inet/addr.c

Timestamp:

2013-07-25T13:20:03Z (12 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

ccdc63e

Parents:

b323a3a

Message:

setup NIC multicast address filter based on the configured IPv6 addresses
(multicast functionality is required for NDP)

File:

• uspace/lib/c/generic/inet/addr.c (modified) (2 diffs)

uspace/lib/c/generic/inet/addr.c

@@ -52 +52 @@
 };
 
+static const addr48_t inet_addr48_solicited_node = {
+        0x33, 0x33, 0xff, 0, 0, 0
+};
+
 static const inet_addr_t inet_addr_any_addr = {
         .family = AF_INET,
@@ -72 +76 @@
 }
 
+int addr48_compare(const addr48_t a, const addr48_t b)
+{
+        return memcmp(a, b, 6);
+}
+
 int addr128_compare(const addr128_t a, const addr128_t b)
 {
         return memcmp(a, b, 16);
+}
+
+/** Compute solicited node MAC multicast address from target IPv6 address
+ *
+ * @param ip  Target IPv6 address
+ * @param mac Solicited MAC address to be assigned
+ *
+ */
+void addr48_solicited_node(const addr128_t ip, addr48_t mac)
+{
+        memcpy(mac, inet_addr48_solicited_node, 3);
+        memcpy(mac + 3, ip + 13, 3);
 }