pim6d: IPv6-adjust iface primary/DR addrs

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>

pimd/pim_bsm.c

@@ -955,7 +955,7 @@ bool pim_bsm_new_nbr_fwd(struct pim_neighbor *neigh, struct interface *ifp)
 	pim_ifp = ifp->info;
 
 	/* DR only forwards BSM packet */
-	if (pim_ifp->pim_dr_addr.s_addr == pim_ifp->primary_address.s_addr) {
+	if (!pim_addr_cmp(pim_ifp->pim_dr_addr, pim_ifp->primary_address)) {
 		if (PIM_DEBUG_BSM)
 			zlog_debug(
 				"%s: It is not DR, so don't forward BSM packet",

pimd/pim_iface.c

@@ -299,27 +299,20 @@ static int detect_primary_address_change(struct interface *ifp,
 					 const char *caller)
 {
 	struct pim_interface *pim_ifp = ifp->info;
-	struct in_addr new_prim_addr;
+	pim_addr new_prim_addr;
 	int changed;
 
 	if (force_prim_as_any)
-		new_prim_addr.s_addr = INADDR_ANY;
+		new_prim_addr = PIMADDR_ANY;
 	else
 		new_prim_addr = pim_find_primary_addr(ifp);
 
-	changed = new_prim_addr.s_addr != pim_ifp->primary_address.s_addr;
+	changed = pim_addr_cmp(new_prim_addr, pim_ifp->primary_address);
 
-	if (PIM_DEBUG_ZEBRA) {
-		char new_prim_str[INET_ADDRSTRLEN];
-		char old_prim_str[INET_ADDRSTRLEN];
-		pim_inet4_dump("<new?>", new_prim_addr, new_prim_str,
-			       sizeof(new_prim_str));
-		pim_inet4_dump("<old?>", pim_ifp->primary_address, old_prim_str,
-			       sizeof(old_prim_str));
-		zlog_debug("%s: old=%s new=%s on interface %s: %s", __func__,
-			   old_prim_str, new_prim_str, ifp->name,
-			   changed ? "changed" : "unchanged");
-	}
+	if (PIM_DEBUG_ZEBRA)
+		zlog_debug("%s: old=%pPA new=%pPA on interface %s: %s",
+			   __func__, &pim_ifp->primary_address, &new_prim_addr,
+			   ifp->name, changed ? "changed" : "unchanged");
 
 	if (changed) {
 		/* Before updating pim_ifp send Hello time with 0 hold time */
@@ -401,19 +394,18 @@ static int pim_sec_addr_update(struct interface *ifp)
 	}
 
 	for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) {
-		struct prefix *p = ifc->address;
+		pim_addr addr = pim_addr_from_prefix(ifc->address);
 
-		if (p->u.prefix4.s_addr == INADDR_ANY) {
+		if (pim_addr_is_any(addr))
 			continue;
-		}
 
-		if (pim_ifp->primary_address.s_addr == p->u.prefix4.s_addr) {
+		if (!pim_addr_cmp(addr, pim_ifp->primary_address)) {
 			/* don't add the primary address into the secondary
 			 * address list */
 			continue;
 		}
 
-		if (pim_sec_addr_add(pim_ifp, p)) {
+		if (pim_sec_addr_add(pim_ifp, ifc->address)) {
 			changed = 1;
 		}
 	}
@@ -480,7 +472,7 @@ static void detect_address_change(struct interface *ifp, int force_prim_as_any,
 	 * address change on all of them when the lo address changes */
 }
 
-int pim_update_source_set(struct interface *ifp, struct in_addr source)
+int pim_update_source_set(struct interface *ifp, pim_addr source)
 {
 	struct pim_interface *pim_ifp = ifp->info;
 
@@ -488,7 +480,7 @@ int pim_update_source_set(struct interface *ifp, struct in_addr source)
 		return PIM_IFACE_NOT_FOUND;
 	}
 
-	if (pim_ifp->update_source.s_addr == source.s_addr) {
+	if (!pim_addr_cmp(pim_ifp->update_source, source)) {
 		return PIM_UPDATE_SOURCE_DUP;
 	}
 
@@ -827,11 +819,10 @@ void pim_if_addr_del_all_igmp(struct interface *ifp)
 	}
 }
 
-struct in_addr pim_find_primary_addr(struct interface *ifp)
+pim_addr pim_find_primary_addr(struct interface *ifp)
 {
 	struct connected *ifc;
 	struct listnode *node;
-	struct in_addr addr = {0};
 	int v4_addrs = 0;
 	int v6_addrs = 0;
 	struct pim_interface *pim_ifp = ifp->info;
@@ -841,28 +832,35 @@ struct in_addr pim_find_primary_addr(struct interface *ifp)
 	}
 
 	for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) {
-		struct prefix *p = ifc->address;
+		pim_addr addr;
 
-		if (p->family != AF_INET) {
+		switch (ifc->address->family) {
+		case AF_INET:
+			v4_addrs++;
+			break;
+		case AF_INET6:
 			v6_addrs++;
+			break;
+		default:
 			continue;
 		}
 
-		if (p->u.prefix4.s_addr == INADDR_ANY) {
-			zlog_warn(
-				"%s: null IPv4 address connected to interface %s",
-				__func__, ifp->name);
-			continue;
-		}
-
-		v4_addrs++;
-
 		if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY))
 			continue;
 
-		return p->u.prefix4;
+		if (ifc->address->family != PIM_AF)
+			continue;
+
+		addr = pim_addr_from_prefix(ifc->address);
+
+#if PIM_IPV == 6
+		if (!IN6_IS_ADDR_LINKLOCAL(&addr))
+			continue;
+#endif
+		return addr;
 	}
 
+#if PIM_IPV == 4
 	/*
 	 * If we have no v4_addrs and v6 is configured
 	 * We probably are using unnumbered
@@ -882,10 +880,8 @@ struct in_addr pim_find_primary_addr(struct interface *ifp)
 		if (lo_ifp && (lo_ifp != ifp))
 			return pim_find_primary_addr(lo_ifp);
 	}
-
-	addr.s_addr = PIM_NET_INADDR_ANY;
-
-	return addr;
+#endif
+	return PIMADDR_ANY;
 }
 
 static int pim_iface_next_vif_index(struct interface *ifp)
@@ -1466,7 +1462,7 @@ void pim_if_create_pimreg(struct pim_instance *pim)
 	}
 }
 
-struct prefix *pim_if_connected_to_source(struct interface *ifp, struct in_addr src)
+struct prefix *pim_if_connected_to_source(struct interface *ifp, pim_addr src)
 {
 	struct listnode *cnode;
 	struct connected *c;
@@ -1475,12 +1471,10 @@ struct prefix *pim_if_connected_to_source(struct interface *ifp, struct in_addr
 	if (!ifp)
 		return NULL;
 
-	p.family = AF_INET;
-	p.u.prefix4 = src;
-	p.prefixlen = IPV4_MAX_BITLEN;
+	pim_addr_to_prefix(&p, src);
 
 	for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, c)) {
-		if (c->address->family != AF_INET)
+		if (c->address->family != PIM_AF)
 			continue;
 		if (prefix_match(c->address, &p))
 			return c->address;

pimd/pim_iface.h

@@ -231,7 +231,7 @@ struct pim_neighbor *pim_if_find_neighbor(struct interface *ifp, pim_addr addr);
 long pim_if_t_suppressed_msec(struct interface *ifp);
 int pim_if_t_override_msec(struct interface *ifp);
 
-struct in_addr pim_find_primary_addr(struct interface *ifp);
+pim_addr pim_find_primary_addr(struct interface *ifp);
 
 ferr_r pim_if_igmp_join_add(struct interface *ifp, struct in_addr group_addr,
 			    struct in_addr source_addr);
@@ -251,8 +251,8 @@ void pim_if_update_assert_tracking_desired(struct interface *ifp);
 
 void pim_if_create_pimreg(struct pim_instance *pim);
 
-struct prefix *pim_if_connected_to_source(struct interface *ifp, struct in_addr src);
-int pim_update_source_set(struct interface *ifp, struct in_addr source);
+struct prefix *pim_if_connected_to_source(struct interface *ifp, pim_addr src);
+int pim_update_source_set(struct interface *ifp, pim_addr source);
 
 bool pim_if_is_vrf_device(struct interface *ifp);
 

pimd/pim_neighbor.c

@@ -107,7 +107,7 @@ static void dr_election_by_pri(struct interface *ifp)
 int pim_if_dr_election(struct interface *ifp)
 {
 	struct pim_interface *pim_ifp = ifp->info;
-	struct in_addr old_dr_addr;
+	pim_addr old_dr_addr;
 
 	++pim_ifp->pim_dr_election_count;
 
@@ -120,18 +120,13 @@ int pim_if_dr_election(struct interface *ifp)
 	}
 
 	/* DR changed ? */
-	if (old_dr_addr.s_addr != pim_ifp->pim_dr_addr.s_addr) {
+	if (pim_addr_cmp(old_dr_addr, pim_ifp->pim_dr_addr)) {
 
-		if (PIM_DEBUG_PIM_EVENTS) {
-			char dr_old_str[INET_ADDRSTRLEN];
-			char dr_new_str[INET_ADDRSTRLEN];
-			pim_inet4_dump("<old_dr?>", old_dr_addr, dr_old_str,
-				       sizeof(dr_old_str));
-			pim_inet4_dump("<new_dr?>", pim_ifp->pim_dr_addr,
-				       dr_new_str, sizeof(dr_new_str));
-			zlog_debug("%s: DR was %s now is %s on interface %s",
-				   __func__, dr_old_str, dr_new_str, ifp->name);
-		}
+		if (PIM_DEBUG_PIM_EVENTS)
+			zlog_debug(
+				"%s: DR was %pPA now is %pPA on interface %s",
+				__func__, &old_dr_addr, &pim_ifp->pim_dr_addr,
+				ifp->name);
 
 		pim_ifp->pim_dr_election_last =
 			pim_time_monotonic_sec(); /* timestamp */

pimd/pim_rp.c

@@ -322,9 +322,11 @@ static int pim_rp_check_interface_addrs(struct rp_info *rp_info,
 {
 	struct listnode *node;
 	struct pim_secondary_addr *sec_addr;
+	pim_addr rpf_addr;
 
-	if (pim_ifp->primary_address.s_addr
-	    == rp_info->rp.rpf_addr.u.prefix4.s_addr)
+	rpf_addr = pim_addr_from_prefix(&rp_info->rp.rpf_addr);
+
+	if (!pim_addr_cmp(pim_ifp->primary_address, rpf_addr))
 		return 1;
 
 	if (!pim_ifp->sec_addr_list) {

pimd/pim_vty.c

@@ -341,13 +341,9 @@ int pim_interface_config_write(struct vty *vty)
 
 				/* update source */
 				if (!pim_addr_is_any(pim_ifp->update_source)) {
-					char src_str[INET_ADDRSTRLEN];
-					pim_inet4_dump("<src?>",
-						       pim_ifp->update_source,
-						       src_str,
-						       sizeof(src_str));
-					vty_out(vty, " ip pim use-source %s\n",
-						src_str);
+					vty_out(vty,
+						" ip pim use-source %pPA\n",
+						&pim_ifp->update_source);
 					++writes;
 				}
 

pimd/pim_zebra.c

@@ -141,12 +141,14 @@ static int pim_zebra_if_address_add(ZAPI_CALLBACK_ARGS)
 #endif
 	}
 
-	if (!CHECK_FLAG(c->flags, ZEBRA_IFA_SECONDARY)) {
-		/* trying to add primary address */
+	if (p->family != PIM_AF)
+		SET_FLAG(c->flags, ZEBRA_IFA_SECONDARY);
+	else if (!CHECK_FLAG(c->flags, ZEBRA_IFA_SECONDARY)) {
+		/* trying to add primary address? */
+		pim_addr primary_addr = pim_find_primary_addr(c->ifp);
+		pim_addr addr = pim_addr_from_prefix(p);
 
-		struct in_addr primary_addr = pim_find_primary_addr(c->ifp);
-		if (p->family != AF_INET
-		    || primary_addr.s_addr != p->u.prefix4.s_addr) {
+		if (pim_addr_cmp(primary_addr, addr)) {
 			if (PIM_DEBUG_ZEBRA)
 				zlog_warn(
 					"%s: %s : forcing secondary flag on %pFX",