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Index: head/sys/net/if.c
===================================================================
--- head/sys/net/if.c
+++ head/sys/net/if.c
@@ -4263,6 +4263,55 @@
return (((struct ifnet *)ifp)->if_mtu);
}
+/*
+ * Methods for drivers to access interface unicast and multicast
+ * link level addresses. Driver shall not know 'struct ifaddr' neither
+ * 'struct ifmultiaddr'.
+ */
+u_int
+if_foreach_lladdr(if_t ifp, iflladdr_cb_t cb, void *cb_arg)
+{
+ struct epoch_tracker et;
+ struct ifaddr *ifa;
+ u_int count;
+
+ MPASS(cb);
+
+ count = 0;
+ NET_EPOCH_ENTER(et);
+ CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
+ if (ifa->ifa_addr->sa_family != AF_LINK)
+ continue;
+ count += (*cb)(cb_arg, (struct sockaddr_dl *)ifa->ifa_addr,
+ count);
+ }
+ NET_EPOCH_EXIT(et);
+
+ return (count);
+}
+
+u_int
+if_foreach_llmaddr(if_t ifp, iflladdr_cb_t cb, void *cb_arg)
+{
+ struct epoch_tracker et;
+ struct ifmultiaddr *ifma;
+ u_int count;
+
+ MPASS(cb);
+
+ count = 0;
+ NET_EPOCH_ENTER(et);
+ CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
+ if (ifma->ifma_addr->sa_family != AF_LINK)
+ continue;
+ count += (*cb)(cb_arg, (struct sockaddr_dl *)ifma->ifma_addr,
+ count);
+ }
+ NET_EPOCH_EXIT(et);
+
+ return (count);
+}
+
int
if_setsoftc(if_t ifp, void *softc)
{
Index: head/sys/net/if_var.h
===================================================================
--- head/sys/net/if_var.h
+++ head/sys/net/if_var.h
@@ -765,11 +765,20 @@
void if_etherbpfmtap(if_t ifp, struct mbuf *m);
void if_vlancap(if_t ifp);
-int if_setupmultiaddr(if_t ifp, void *mta, int *cnt, int max);
-int if_multiaddr_array(if_t ifp, void *mta, int *cnt, int max);
+/*
+ * Traversing through interface address lists.
+ */
+struct sockaddr_dl;
+typedef u_int iflladdr_cb_t(void *, struct sockaddr_dl *, u_int);
+u_int if_foreach_lladdr(if_t, iflladdr_cb_t, void *);
+u_int if_foreach_llmaddr(if_t, iflladdr_cb_t, void *);
int if_multiaddr_count(if_t ifp, int max);
+/* Obsoleted multicast management functions. */
+int if_setupmultiaddr(if_t ifp, void *mta, int *cnt, int max);
+int if_multiaddr_array(if_t ifp, void *mta, int *cnt, int max);
int if_multi_apply(struct ifnet *ifp, int (*filter)(void *, struct ifmultiaddr *, int), void *arg);
+
int if_getamcount(if_t ifp);
struct ifaddr * if_getifaddr(if_t ifp);

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