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-rw-r--r--bgpd/bgp_route.c27
-rw-r--r--bgpd/bgp_route.h8
-rw-r--r--bgpd/bgp_zebra.c8
-rw-r--r--ripd/rip_interface.c20
-rw-r--r--ripd/rip_routemap.c8
-rw-r--r--ripd/rip_zebra.c25
-rw-r--r--ripd/ripd.c83
-rw-r--r--ripd/ripd.h14
8 files changed, 122 insertions, 71 deletions
diff --git a/bgpd/bgp_route.c b/bgpd/bgp_route.c
index a1c891fc66..0fb650c149 100644
--- a/bgpd/bgp_route.c
+++ b/bgpd/bgp_route.c
@@ -6148,8 +6148,9 @@ DEFUN (no_ipv6_aggregate_address,
/* Redistribute route treatment. */
void bgp_redistribute_add(struct bgp *bgp, struct prefix *p,
- const union g_addr *nexthop, unsigned int ifindex,
- u_int32_t metric, u_char type, u_short instance,
+ const union g_addr *nexthop, ifindex_t ifindex,
+ enum nexthop_types_t nhtype, uint32_t metric,
+ u_char type, u_short instance,
route_tag_t tag)
{
struct bgp_info *new;
@@ -6164,15 +6165,31 @@ void bgp_redistribute_add(struct bgp *bgp, struct prefix *p,
/* Make default attribute. */
bgp_attr_default_set(&attr, BGP_ORIGIN_INCOMPLETE);
- if (nexthop) {
+
+ switch(nhtype) {
+ case NEXTHOP_TYPE_IFINDEX:
+ break;
+ case NEXTHOP_TYPE_IPV4:
+ case NEXTHOP_TYPE_IPV4_IFINDEX:
+ attr.nexthop = nexthop->ipv4;
+ break;
+ case NEXTHOP_TYPE_IPV6:
+ case NEXTHOP_TYPE_IPV6_IFINDEX:
+ attr.mp_nexthop_global = nexthop->ipv6;
+ attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV6_GLOBAL;
+ break;
+ case NEXTHOP_TYPE_BLACKHOLE:
switch (p->family) {
case AF_INET:
- attr.nexthop = nexthop->ipv4;
+ attr.nexthop.s_addr = INADDR_ANY;
break;
case AF_INET6:
- attr.mp_nexthop_global = nexthop->ipv6;
+ memset(&attr.mp_nexthop_global, 0,
+ sizeof(attr.mp_nexthop_global));
attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV6_GLOBAL;
+ break;
}
+ break;
}
attr.nh_ifindex = ifindex;
diff --git a/bgpd/bgp_route.h b/bgpd/bgp_route.h
index 6fbeed8963..085de3fabb 100644
--- a/bgpd/bgp_route.h
+++ b/bgpd/bgp_route.h
@@ -328,9 +328,11 @@ extern int bgp_nlri_parse_ip(struct peer *, struct attr *, struct bgp_nlri *);
extern int bgp_maximum_prefix_overflow(struct peer *, afi_t, safi_t, int);
-extern void bgp_redistribute_add(struct bgp *, struct prefix *,
- const union g_addr *, unsigned int ifindex,
- u_int32_t, u_char, u_short, route_tag_t);
+extern void bgp_redistribute_add(struct bgp *bgp, struct prefix *p,
+ const union g_addr *nexthop, ifindex_t ifindex,
+ enum nexthop_types_t nhtype, uint32_t metric,
+ u_char type, u_short instance,
+ route_tag_t tag);
extern void bgp_redistribute_delete(struct bgp *, struct prefix *, u_char,
u_short);
extern void bgp_redistribute_withdraw(struct bgp *, afi_t, int, u_short);
diff --git a/bgpd/bgp_zebra.c b/bgpd/bgp_zebra.c
index bec7050226..b6bf008bae 100644
--- a/bgpd/bgp_zebra.c
+++ b/bgpd/bgp_zebra.c
@@ -524,9 +524,10 @@ static int bgp_interface_vrf_update(int command, struct zclient *zclient,
static int zebra_read_route(int command, struct zclient *zclient,
zebra_size_t length, vrf_id_t vrf_id)
{
+ enum nexthop_types_t nhtype;
struct zapi_route api;
union g_addr nexthop;
- unsigned int ifindex;
+ ifindex_t ifindex;
int add, i;
struct bgp *bgp;
@@ -548,6 +549,7 @@ static int zebra_read_route(int command, struct zclient *zclient,
nexthop = api.nexthops[0].gate;
ifindex = api.nexthops[0].ifindex;
+ nhtype = api.nexthops[0].type;
add = (command == ZEBRA_REDISTRIBUTE_ROUTE_ADD);
if (add) {
@@ -568,8 +570,8 @@ static int zebra_read_route(int command, struct zclient *zclient,
/* Now perform the add/update. */
bgp_redistribute_add(bgp, &api.prefix, &nexthop, ifindex,
- api.metric, api.type, api.instance,
- api.tag);
+ nhtype, api.metric, api.type,
+ api.instance, api.tag);
} else {
bgp_redistribute_delete(bgp, &api.prefix, api.type,
api.instance);
diff --git a/ripd/rip_interface.c b/ripd/rip_interface.c
index a997ca5f2e..d20954037d 100644
--- a/ripd/rip_interface.c
+++ b/ripd/rip_interface.c
@@ -559,7 +559,7 @@ int rip_if_down(struct interface *ifp)
if ((list = rp->info) != NULL)
for (ALL_LIST_ELEMENTS(list, listnode, nextnode,
rinfo))
- if (rinfo->ifindex == ifp->ifindex)
+ if (rinfo->nh.ifindex == ifp->ifindex)
rip_ecmp_delete(rinfo);
ri = ifp->info;
@@ -591,6 +591,7 @@ void rip_if_down_all()
static void rip_apply_address_add(struct connected *ifc)
{
struct prefix_ipv4 address;
+ struct nexthop nh;
struct prefix *p;
if (!rip)
@@ -602,18 +603,22 @@ static void rip_apply_address_add(struct connected *ifc)
p = ifc->address;
memset(&address, 0, sizeof(address));
+ memset(&nh, 0, sizeof(nh));
+
address.family = p->family;
address.prefix = p->u.prefix4;
address.prefixlen = p->prefixlen;
apply_mask_ipv4(&address);
+ nh.ifindex = ifc->ifp->ifindex;
+ nh.type = NEXTHOP_TYPE_IFINDEX;
+
/* Check if this interface is RIP enabled or not
or Check if this address's prefix is RIP enabled */
if ((rip_enable_if_lookup(ifc->ifp->name) >= 0)
|| (rip_enable_network_lookup2(ifc) >= 0))
rip_redistribute_add(ZEBRA_ROUTE_CONNECT, RIP_ROUTE_INTERFACE,
- &address, ifc->ifp->ifindex, NULL, 0, 0,
- 0);
+ &address, &nh, 0, 0, 0);
}
int rip_interface_address_add(int command, struct zclient *zclient,
@@ -879,6 +884,9 @@ static void rip_connect_set(struct interface *ifp, int set)
struct listnode *node, *nnode;
struct connected *connected;
struct prefix_ipv4 address;
+ struct nexthop nh;
+
+ memset(&nh, 0, sizeof(nh));
for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, connected)) {
struct prefix *p;
@@ -892,6 +900,8 @@ static void rip_connect_set(struct interface *ifp, int set)
address.prefixlen = p->prefixlen;
apply_mask_ipv4(&address);
+ nh.ifindex = connected->ifp->ifindex;
+ nh.type = NEXTHOP_TYPE_IFINDEX;
if (set) {
/* Check once more wether this prefix is within a
* "network IF_OR_PREF" one */
@@ -900,7 +910,7 @@ static void rip_connect_set(struct interface *ifp, int set)
rip_redistribute_add(
ZEBRA_ROUTE_CONNECT,
RIP_ROUTE_INTERFACE, &address,
- connected->ifp->ifindex, NULL, 0, 0, 0);
+ &nh, 0, 0, 0);
} else {
rip_redistribute_delete(ZEBRA_ROUTE_CONNECT,
RIP_ROUTE_INTERFACE, &address,
@@ -909,7 +919,7 @@ static void rip_connect_set(struct interface *ifp, int set)
rip_redistribute_add(
ZEBRA_ROUTE_CONNECT,
RIP_ROUTE_REDISTRIBUTE, &address,
- connected->ifp->ifindex, NULL, 0, 0, 0);
+ &nh, 0, 0, 0);
}
}
}
diff --git a/ripd/rip_routemap.c b/ripd/rip_routemap.c
index ad9f8cf80b..a37effa23c 100644
--- a/ripd/rip_routemap.c
+++ b/ripd/rip_routemap.c
@@ -129,7 +129,7 @@ static route_map_result_t route_match_interface(void *rule,
rinfo = object;
if (rinfo->ifindex_out == ifp->ifindex
- || rinfo->ifindex == ifp->ifindex)
+ || rinfo->nh.ifindex == ifp->ifindex)
return RMAP_MATCH;
else
return RMAP_NOMATCH;
@@ -171,7 +171,8 @@ static route_map_result_t route_match_ip_next_hop(void *rule,
rinfo = object;
p.family = AF_INET;
p.prefix =
- (rinfo->nexthop.s_addr) ? rinfo->nexthop : rinfo->from;
+ (rinfo->nh.gate.ipv4.s_addr) ?
+ rinfo->nh.gate.ipv4 : rinfo->from;
p.prefixlen = IPV4_MAX_BITLEN;
alist = access_list_lookup(AFI_IP, (char *)rule);
@@ -217,7 +218,8 @@ route_match_ip_next_hop_prefix_list(void *rule, struct prefix *prefix,
rinfo = object;
p.family = AF_INET;
p.prefix =
- (rinfo->nexthop.s_addr) ? rinfo->nexthop : rinfo->from;
+ (rinfo->nh.gate.ipv4.s_addr) ?
+ rinfo->nh.gate.ipv4 : rinfo->from;
p.prefixlen = IPV4_MAX_BITLEN;
plist = prefix_list_lookup(AFI_IP, (char *)rule);
diff --git a/ripd/rip_zebra.c b/ripd/rip_zebra.c
index 3772f6223e..e479e2474d 100644
--- a/ripd/rip_zebra.c
+++ b/ripd/rip_zebra.c
@@ -56,7 +56,7 @@ static void rip_zebra_ipv4_send(struct route_node *rp, u_char cmd)
if (count >= MULTIPATH_NUM)
break;
api_nh = &api.nexthops[count];
- api_nh->gate.ipv4 = rinfo->nexthop;
+ api_nh->gate = rinfo->nh.gate;
api_nh->type = NEXTHOP_TYPE_IPV4;
if (cmd == ZEBRA_ROUTE_ADD)
SET_FLAG(rinfo->flags, RIP_RTF_FIB);
@@ -121,8 +121,7 @@ static int rip_zebra_read_route(int command, struct zclient *zclient,
zebra_size_t length, vrf_id_t vrf_id)
{
struct zapi_route api;
- struct in_addr nexthop;
- unsigned long ifindex;
+ struct nexthop nh;
if (!rip)
return 0;
@@ -130,19 +129,21 @@ static int rip_zebra_read_route(int command, struct zclient *zclient,
if (zapi_route_decode(zclient->ibuf, &api) < 0)
return -1;
- nexthop = api.nexthops[0].gate.ipv4;
- ifindex = api.nexthops[0].ifindex;
+ memset(&nh, 0, sizeof(nh));
+ nh.type = api.nexthops[0].type;
+ nh.gate.ipv4 = api.nexthops[0].gate.ipv4;
+ nh.ifindex = api.nexthops[0].ifindex;
/* Then fetch IPv4 prefixes. */
if (command == ZEBRA_REDISTRIBUTE_ROUTE_ADD)
rip_redistribute_add(api.type, RIP_ROUTE_REDISTRIBUTE,
- (struct prefix_ipv4 *)&api.prefix, ifindex,
- &nexthop, api.metric, api.distance,
+ (struct prefix_ipv4 *)&api.prefix, &nh,
+ api.metric, api.distance,
api.tag);
else if (command == ZEBRA_REDISTRIBUTE_ROUTE_DEL)
rip_redistribute_delete(api.type, RIP_ROUTE_REDISTRIBUTE,
(struct prefix_ipv4 *)&api.prefix,
- ifindex);
+ nh.ifindex);
return 0;
}
@@ -501,15 +502,19 @@ DEFUN (rip_default_information_originate,
"Distribute a default route\n")
{
struct prefix_ipv4 p;
+ struct nexthop nh;
if (!rip->default_information) {
memset(&p, 0, sizeof(struct prefix_ipv4));
+ memset(&nh, 0, sizeof(nh));
+
p.family = AF_INET;
+ nh.type = NEXTHOP_TYPE_IPV4;
rip->default_information = 1;
- rip_redistribute_add(ZEBRA_ROUTE_RIP, RIP_ROUTE_DEFAULT, &p, 0,
- NULL, 0, 0, 0);
+ rip_redistribute_add(ZEBRA_ROUTE_RIP, RIP_ROUTE_DEFAULT, &p,
+ &nh, 0, 0, 0);
}
return CMD_SUCCESS;
diff --git a/ripd/ripd.c b/ripd/ripd.c
index aece5d03cd..b5cbc96bc3 100644
--- a/ripd/ripd.c
+++ b/ripd/ripd.c
@@ -424,9 +424,10 @@ static void rip_rte_process(struct rte *rte, struct sockaddr_in *from,
memset(&newinfo, 0, sizeof(newinfo));
newinfo.type = ZEBRA_ROUTE_RIP;
newinfo.sub_type = RIP_ROUTE_RTE;
- newinfo.nexthop = rte->nexthop;
+ newinfo.nh.gate.ipv4 = rte->nexthop;
newinfo.from = from->sin_addr;
- newinfo.ifindex = ifp->ifindex;
+ newinfo.nh.ifindex = ifp->ifindex;
+ newinfo.nh.type = NEXTHOP_TYPE_IPV4_IFINDEX;
newinfo.metric = rte->metric;
newinfo.metric_out = rte->metric; /* XXX */
newinfo.tag = ntohs(rte->tag); /* XXX */
@@ -488,7 +489,8 @@ static void rip_rte_process(struct rte *rte, struct sockaddr_in *from,
rp = route_node_get(rip->table, (struct prefix *)&p);
newinfo.rp = rp;
- newinfo.nexthop = *nexthop;
+ newinfo.nh.gate.ipv4 = *nexthop;
+ newinfo.nh.type = NEXTHOP_TYPE_IPV4;
newinfo.metric = rte->metric;
newinfo.tag = ntohs(rte->tag);
newinfo.distance = rip_distance_apply(&newinfo);
@@ -505,7 +507,7 @@ static void rip_rte_process(struct rte *rte, struct sockaddr_in *from,
break;
if (IPV4_ADDR_SAME(&rinfo->from, &from->sin_addr)
- && IPV4_ADDR_SAME(&rinfo->nexthop, nexthop))
+ && IPV4_ADDR_SAME(&rinfo->nh.gate.ipv4, nexthop))
break;
if (!listnextnode(node)) {
@@ -567,7 +569,7 @@ static void rip_rte_process(struct rte *rte, struct sockaddr_in *from,
/* Only routes directly connected to an interface
* (nexthop == 0)
* may have a valid NULL distance */
- if (rinfo->nexthop.s_addr != 0)
+ if (rinfo->nh.gate.ipv4.s_addr != 0)
old_dist = old_dist
? old_dist
: ZEBRA_RIP_DISTANCE_DEFAULT;
@@ -602,7 +604,7 @@ static void rip_rte_process(struct rte *rte, struct sockaddr_in *from,
If this datagram is from the same router as the existing
route, reinitialize the timeout. */
same = (IPV4_ADDR_SAME(&rinfo->from, &from->sin_addr)
- && (rinfo->ifindex == ifp->ifindex));
+ && (rinfo->nh.ifindex == ifp->ifindex));
old_dist = rinfo->distance ? rinfo->distance
: ZEBRA_RIP_DISTANCE_DEFAULT;
@@ -1461,7 +1463,7 @@ static int rip_send_packet(u_char *buf, int size, struct sockaddr_in *to,
/* Add redistributed route to RIP table. */
void rip_redistribute_add(int type, int sub_type, struct prefix_ipv4 *p,
- ifindex_t ifindex, struct in_addr *nexthop,
+ struct nexthop *nh,
unsigned int metric, unsigned char distance,
route_tag_t tag)
{
@@ -1480,15 +1482,13 @@ void rip_redistribute_add(int type, int sub_type, struct prefix_ipv4 *p,
memset(&newinfo, 0, sizeof(struct rip_info));
newinfo.type = type;
newinfo.sub_type = sub_type;
- newinfo.ifindex = ifindex;
newinfo.metric = 1;
newinfo.external_metric = metric;
newinfo.distance = distance;
if (tag <= UINT16_MAX) /* RIP only supports 16 bit tags */
newinfo.tag = tag;
newinfo.rp = rp;
- if (nexthop)
- newinfo.nexthop = *nexthop;
+ newinfo.nh = *nh;
if ((list = rp->info) != NULL && listcount(list) != 0) {
rinfo = listgetdata(listhead(list));
@@ -1512,23 +1512,15 @@ void rip_redistribute_add(int type, int sub_type, struct prefix_ipv4 *p,
}
}
- rinfo = rip_ecmp_replace(&newinfo);
+ (void)rip_ecmp_replace(&newinfo);
route_unlock_node(rp);
} else
- rinfo = rip_ecmp_add(&newinfo);
+ (void)rip_ecmp_add(&newinfo);
if (IS_RIP_DEBUG_EVENT) {
- if (!nexthop)
- zlog_debug(
- "Redistribute new prefix %s/%d on the interface %s",
- inet_ntoa(p->prefix), p->prefixlen,
- ifindex2ifname(ifindex, VRF_DEFAULT));
- else
- zlog_debug(
- "Redistribute new prefix %s/%d with nexthop %s on the interface %s",
- inet_ntoa(p->prefix), p->prefixlen,
- inet_ntoa(rinfo->nexthop),
- ifindex2ifname(ifindex, VRF_DEFAULT));
+ zlog_debug(
+ "Redistribute new prefix %s/%d",
+ inet_ntoa(p->prefix), p->prefixlen);
}
rip_event(RIP_TRIGGERED_UPDATE, 0);
@@ -1554,7 +1546,7 @@ void rip_redistribute_delete(int type, int sub_type, struct prefix_ipv4 *p,
rinfo = listgetdata(listhead(list));
if (rinfo != NULL && rinfo->type == type
&& rinfo->sub_type == sub_type
- && rinfo->ifindex == ifindex) {
+ && rinfo->nh.ifindex == ifindex) {
/* Perform poisoned reverse. */
rinfo->metric = RIP_METRIC_INFINITY;
RIP_TIMER_ON(rinfo->t_garbage_collect,
@@ -1565,7 +1557,7 @@ void rip_redistribute_delete(int type, int sub_type, struct prefix_ipv4 *p,
if (IS_RIP_DEBUG_EVENT)
zlog_debug(
- "Poisone %s/%d on the interface %s with an "
+ "Poison %s/%d on the interface %s with an "
"infinity metric [delete]",
inet_ntoa(p->prefix),
p->prefixlen,
@@ -2201,7 +2193,7 @@ void rip_output_process(struct connected *ifc, struct sockaddr_in *to,
for (ALL_LIST_ELEMENTS_RO(list, listnode,
tmp_rinfo))
if (tmp_rinfo->type == ZEBRA_ROUTE_RIP
- && tmp_rinfo->ifindex
+ && tmp_rinfo->nh.ifindex
== ifc->ifp->ifindex) {
suppress = 1;
break;
@@ -2233,8 +2225,8 @@ void rip_output_process(struct connected *ifc, struct sockaddr_in *to,
* to avoid an IGP multi-level recursive look-up.
* see (4.4)
*/
- if (rinfo->ifindex == ifc->ifp->ifindex)
- rinfo->nexthop_out = rinfo->nexthop;
+ if (rinfo->nh.ifindex == ifc->ifp->ifindex)
+ rinfo->nexthop_out = rinfo->nh.gate.ipv4;
/* Interface route-map */
if (ri->routemap[RIP_FILTER_OUT]) {
@@ -2326,7 +2318,7 @@ void rip_output_process(struct connected *ifc, struct sockaddr_in *to,
for (ALL_LIST_ELEMENTS_RO(list, listnode,
tmp_rinfo))
if (tmp_rinfo->type == ZEBRA_ROUTE_RIP
- && tmp_rinfo->ifindex
+ && tmp_rinfo->nh.ifindex
== ifc->ifp->ifindex)
rinfo->metric_out =
RIP_METRIC_INFINITY;
@@ -2647,8 +2639,9 @@ void rip_redistribute_withdraw(int type)
"Poisone %s/%d on the interface %s with an infinity metric [withdraw]",
inet_ntoa(p->prefix),
p->prefixlen,
- ifindex2ifname(rinfo->ifindex,
- VRF_DEFAULT));
+ ifindex2ifname(
+ rinfo->nh.ifindex,
+ VRF_DEFAULT));
}
rip_event(RIP_TRIGGERED_UPDATE, 0);
@@ -2861,9 +2854,13 @@ DEFUN (rip_route,
{
int idx_ipv4_prefixlen = 1;
int ret;
+ struct nexthop nh;
struct prefix_ipv4 p;
struct route_node *node;
+ memset(&nh, 0, sizeof(nh));
+ nh.type = NEXTHOP_TYPE_IPV4;
+
ret = str2prefix_ipv4(argv[idx_ipv4_prefixlen]->arg, &p);
if (ret < 0) {
vty_out(vty, "Malformed address\n");
@@ -2882,7 +2879,7 @@ DEFUN (rip_route,
node->info = (void *)1;
- rip_redistribute_add(ZEBRA_ROUTE_RIP, RIP_ROUTE_STATIC, &p, 0, NULL, 0,
+ rip_redistribute_add(ZEBRA_ROUTE_RIP, RIP_ROUTE_STATIC, &p, &nh, 0,
0, 0);
return CMD_SUCCESS;
@@ -3454,14 +3451,30 @@ DEFUN (show_ip_rip,
if (len > 0)
vty_out(vty, "%*s", len, " ");
- if (rinfo->nexthop.s_addr)
+ switch(rinfo->nh.type) {
+ case NEXTHOP_TYPE_IPV4:
+ case NEXTHOP_TYPE_IPV4_IFINDEX:
vty_out(vty, "%-20s %2d ",
- inet_ntoa(rinfo->nexthop),
+ inet_ntoa(rinfo->nh.gate.ipv4),
rinfo->metric);
- else
+ break;
+ case NEXTHOP_TYPE_IFINDEX:
vty_out(vty,
"0.0.0.0 %2d ",
rinfo->metric);
+ break;
+ case NEXTHOP_TYPE_BLACKHOLE:
+ vty_out(vty,
+ "blackhole %2d ",
+ rinfo->metric);
+ break;
+ case NEXTHOP_TYPE_IPV6:
+ case NEXTHOP_TYPE_IPV6_IFINDEX:
+ vty_out(vty,
+ "V6 Address Hidden %2d ",
+ rinfo->metric);
+ break;
+ }
/* Route which exist in kernel routing table. */
if ((rinfo->type == ZEBRA_ROUTE_RIP)
diff --git a/ripd/ripd.h b/ripd/ripd.h
index ae34ed3f48..9a9c081bf9 100644
--- a/ripd/ripd.h
+++ b/ripd/ripd.h
@@ -23,6 +23,7 @@
#include "qobj.h"
#include "hook.h"
+#include "nexthop.h"
#include "rip_memory.h"
/* RIP version number. */
@@ -194,12 +195,9 @@ struct rip_info {
int sub_type;
/* RIP nexthop. */
- struct in_addr nexthop;
+ struct nexthop nh;
struct in_addr from;
- /* Which interface does this route come from. */
- ifindex_t ifindex;
-
/* Metric of this route. */
u_int32_t metric;
@@ -387,9 +385,11 @@ extern int rip_request_send(struct sockaddr_in *, struct interface *, u_char,
extern int rip_neighbor_lookup(struct sockaddr_in *);
extern int rip_redistribute_check(int);
-extern void rip_redistribute_add(int, int, struct prefix_ipv4 *, ifindex_t,
- struct in_addr *, unsigned int, unsigned char,
- route_tag_t);
+extern void rip_redistribute_add(int type, int sub_type,
+ struct prefix_ipv4 *p,
+ struct nexthop *nh,
+ unsigned int metric, unsigned char distance,
+ route_tag_t tag);
extern void rip_redistribute_delete(int, int, struct prefix_ipv4 *, ifindex_t);
extern void rip_redistribute_withdraw(int);
extern void rip_zebra_ipv4_add(struct route_node *);