[mirror_frr.git] / zebra / router-id.c

/*
 * Router ID for zebra daemon.
 *
 * Copyright (C) 2004 James R. Leu
 *
 * This file is part of Quagga routing suite.
 *
 * Quagga is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * Quagga is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; see the file COPYING; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <zebra.h>

#include "if.h"
#include "vty.h"
#include "sockunion.h"
#include "prefix.h"
#include "stream.h"
#include "command.h"
#include "memory.h"
#include "ioctl.h"
#include "connected.h"
#include "network.h"
#include "log.h"
#include "table.h"
#include "rib.h"
#include "vrf.h"

#include "zebra/zebra_router.h"
#include "zebra/zapi_msg.h"
#include "zebra/zebra_vrf.h"
#include "zebra/router-id.h"
#include "zebra/redistribute.h"

static struct connected *router_id_find_node(struct list *l,
					     struct connected *ifc)
{
	struct listnode *node;
	struct connected *c;

	for (ALL_LIST_ELEMENTS_RO(l, node, c))
		if (prefix_same(ifc->address, c->address))
			return c;

	return NULL;
}

static int router_id_bad_address(struct connected *ifc)
{
	/* non-redistributable addresses shouldn't be used for RIDs either */
	if (!zebra_check_addr(ifc->address))
		return 1;

	return 0;
}

static bool router_id_v6_is_any(struct prefix *p)
{
	return memcmp(&p->u.prefix6, &in6addr_any, sizeof(struct in6_addr))
	       == 0;
}

int router_id_get(afi_t afi, struct prefix *p, struct zebra_vrf *zvrf)
{
	struct listnode *node;
	struct connected *c;
	struct in6_addr *addr = NULL;

	switch (afi) {
	case AFI_IP:
		p->u.prefix4.s_addr = INADDR_ANY;
		p->family = AF_INET;
		p->prefixlen = 32;
		if (zvrf->rid_user_assigned.u.prefix4.s_addr != INADDR_ANY)
			p->u.prefix4.s_addr =
				zvrf->rid_user_assigned.u.prefix4.s_addr;
		else if (!list_isempty(zvrf->rid_lo_sorted_list)) {
			node = listtail(zvrf->rid_lo_sorted_list);
			c = listgetdata(node);
			p->u.prefix4.s_addr = c->address->u.prefix4.s_addr;
		} else if (!list_isempty(zvrf->rid_all_sorted_list)) {
			node = listtail(zvrf->rid_all_sorted_list);
			c = listgetdata(node);
			p->u.prefix4.s_addr = c->address->u.prefix4.s_addr;
		}
		return 0;
	case AFI_IP6:
		p->u.prefix6 = in6addr_any;
		p->family = AF_INET6;
		p->prefixlen = 128;
		if (!router_id_v6_is_any(&zvrf->rid6_user_assigned))
			addr = &zvrf->rid6_user_assigned.u.prefix6;
		else if (!list_isempty(zvrf->rid6_lo_sorted_list)) {
			node = listtail(zvrf->rid6_lo_sorted_list);
			c = listgetdata(node);
			addr = &c->address->u.prefix6;
		} else if (!list_isempty(zvrf->rid6_all_sorted_list)) {
			node = listtail(zvrf->rid6_all_sorted_list);
			c = listgetdata(node);
			addr = &c->address->u.prefix6;
		}
		if (addr)
			memcpy(&p->u.prefix6, addr, sizeof(struct in6_addr));
		return 0;
	default:
		return -1;
	}
}

static int router_id_set(afi_t afi, struct prefix *p, struct zebra_vrf *zvrf)
{
	struct prefix p2;
	struct listnode *node;
	struct zserv *client;

	switch (afi) {
	case AFI_IP:
		zvrf->rid_user_assigned.u.prefix4.s_addr = p->u.prefix4.s_addr;
		break;
	case AFI_IP6:
		zvrf->rid6_user_assigned.u.prefix6 = p->u.prefix6;
		break;
	default:
		return -1;
	}

	router_id_get(afi, &p2, zvrf);

	for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client))
		zsend_router_id_update(client, afi, &p2, zvrf->vrf->vrf_id);

	return 0;
}

void router_id_add_address(struct connected *ifc)
{
	struct list *l = NULL;
	struct listnode *node;
	struct prefix before;
	struct prefix after;
	struct zserv *client;
	struct zebra_vrf *zvrf = vrf_info_get(ifc->ifp->vrf_id);
	afi_t afi;
	struct list *rid_lo;
	struct list *rid_all;

	if (router_id_bad_address(ifc))
		return;

	switch (ifc->address->family) {
	case AF_INET:
		afi = AFI_IP;
		rid_lo = zvrf->rid_lo_sorted_list;
		rid_all = zvrf->rid_all_sorted_list;
		break;
	case AF_INET6:
		afi = AFI_IP6;
		rid_lo = zvrf->rid6_lo_sorted_list;
		rid_all = zvrf->rid6_all_sorted_list;
		break;
	default:
		return;
	}

	router_id_get(afi, &before, zvrf);

	l = if_is_loopback(ifc->ifp) ? rid_lo : rid_all;

	if (!router_id_find_node(l, ifc))
		listnode_add_sort(l, ifc);

	router_id_get(afi, &after, zvrf);

	if (prefix_same(&before, &after))
		return;

	for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client))
		zsend_router_id_update(client, afi, &after, zvrf_id(zvrf));
}

void router_id_del_address(struct connected *ifc)
{
	struct connected *c;
	struct list *l;
	struct prefix after;
	struct prefix before;
	struct listnode *node;
	struct zserv *client;
	struct zebra_vrf *zvrf = vrf_info_get(ifc->ifp->vrf_id);
	afi_t afi;
	struct list *rid_lo;
	struct list *rid_all;

	if (router_id_bad_address(ifc))
		return;

	switch (ifc->address->family) {
	case AF_INET:
		afi = AFI_IP;
		rid_lo = zvrf->rid_lo_sorted_list;
		rid_all = zvrf->rid_all_sorted_list;
		break;
	case AF_INET6:
		afi = AFI_IP6;
		rid_lo = zvrf->rid6_lo_sorted_list;
		rid_all = zvrf->rid6_all_sorted_list;
		break;
	default:
		return;
	}

	router_id_get(afi, &before, zvrf);

	if (if_is_loopback(ifc->ifp))
		l = rid_lo;
	else
		l = rid_all;

	if ((c = router_id_find_node(l, ifc)))
		listnode_delete(l, c);

	router_id_get(afi, &after, zvrf);

	if (prefix_same(&before, &after))
		return;

	for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client))
		zsend_router_id_update(client, afi, &after, zvrf_id(zvrf));
}

void router_id_write(struct vty *vty, struct zebra_vrf *zvrf)
{
	char space[2];

	memset(space, 0, sizeof(space));

	if (zvrf_id(zvrf) != VRF_DEFAULT)
		snprintf(space, sizeof(space), "%s", " ");

	if (zvrf->rid_user_assigned.u.prefix4.s_addr != INADDR_ANY) {
		vty_out(vty, "%sip router-id %pI4\n", space,
			&zvrf->rid_user_assigned.u.prefix4);
	}
	if (!router_id_v6_is_any(&zvrf->rid6_user_assigned)) {
		vty_out(vty, "%sipv6 router-id %pI6\n", space,
			&zvrf->rid_user_assigned.u.prefix6);
	}
}

DEFUN (ip_router_id,
       ip_router_id_cmd,
       "ip router-id A.B.C.D vrf NAME",
       IP_STR
       "Manually set the router-id\n"
       "IP address to use for router-id\n"
       VRF_CMD_HELP_STR)
{
	int idx = 0;
	struct prefix rid;
	vrf_id_t vrf_id;
	struct zebra_vrf *zvrf;

	argv_find(argv, argc, "A.B.C.D", &idx);

	if (!inet_pton(AF_INET, argv[idx]->arg, &rid.u.prefix4))
		return CMD_WARNING_CONFIG_FAILED;

	rid.prefixlen = 32;
	rid.family = AF_INET;

	argv_find(argv, argc, "NAME", &idx);
	VRF_GET_ID(vrf_id, argv[idx]->arg, false);

	zvrf = vrf_info_lookup(vrf_id);
	router_id_set(AFI_IP, &rid, zvrf);

	return CMD_SUCCESS;
}

ALIAS (ip_router_id,
       router_id_cmd,
       "router-id A.B.C.D vrf NAME",
       "Manually set the router-id\n"
       "IP address to use for router-id\n"
       VRF_CMD_HELP_STR);

DEFUN (ipv6_router_id,
       ipv6_router_id_cmd,
       "ipv6 router-id X:X::X:X vrf NAME",
       IPV6_STR
       "Manually set the router-id\n"
       "IPv6 address to use for router-id\n"
       VRF_CMD_HELP_STR)
{
	int idx = 0;
	struct prefix rid;
	vrf_id_t vrf_id;
	struct zebra_vrf *zvrf;

	argv_find(argv, argc, "X:X::X:X", &idx);

	if (!inet_pton(AF_INET6, argv[idx]->arg, &rid.u.prefix6))
		return CMD_WARNING_CONFIG_FAILED;

	rid.prefixlen = 128;
	rid.family = AF_INET6;

	argv_find(argv, argc, "NAME", &idx);
	VRF_GET_ID(vrf_id, argv[idx]->arg, false);

	zvrf = vrf_info_lookup(vrf_id);
	router_id_set(AFI_IP6, &rid, zvrf);

	return CMD_SUCCESS;
}


DEFUN (ip_router_id_in_vrf,
       ip_router_id_in_vrf_cmd,
       "ip router-id A.B.C.D",
       IP_STR
       "Manually set the router-id\n"
       "IP address to use for router-id\n")
{
	ZEBRA_DECLVAR_CONTEXT(vrf, zvrf);
	int idx = 0;
	struct prefix rid;

	argv_find(argv, argc, "A.B.C.D", &idx);

	if (!inet_pton(AF_INET, argv[idx]->arg, &rid.u.prefix4))
		return CMD_WARNING_CONFIG_FAILED;

	rid.prefixlen = 32;
	rid.family = AF_INET;

	router_id_set(AFI_IP, &rid, zvrf);

	return CMD_SUCCESS;
}

ALIAS (ip_router_id_in_vrf,
       router_id_in_vrf_cmd,
       "router-id A.B.C.D",
       "Manually set the router-id\n"
       "IP address to use for router-id\n");

DEFUN (ipv6_router_id_in_vrf,
       ipv6_router_id_in_vrf_cmd,
       "ipv6 router-id X:X::X:X",
       IP6_STR
       "Manually set the IPv6 router-id\n"
       "IPV6 address to use for router-id\n")
{
	ZEBRA_DECLVAR_CONTEXT(vrf, zvrf);
	int idx = 0;
	struct prefix rid;

	argv_find(argv, argc, "X:X::X:X", &idx);

	if (!inet_pton(AF_INET6, argv[idx]->arg, &rid.u.prefix6))
		return CMD_WARNING_CONFIG_FAILED;

	rid.prefixlen = 128;
	rid.family = AF_INET6;

	router_id_set(AFI_IP6, &rid, zvrf);

	return CMD_SUCCESS;
}

DEFUN (no_ip_router_id,
       no_ip_router_id_cmd,
       "no ip router-id [A.B.C.D vrf NAME]",
       NO_STR
       IP_STR
       "Remove the manually configured router-id\n"
       "IP address to use for router-id\n"
       VRF_CMD_HELP_STR)
{
	int idx = 0;
	struct prefix rid;
	vrf_id_t vrf_id = VRF_DEFAULT;
	struct zebra_vrf *zvrf;

	rid.u.prefix4.s_addr = 0;
	rid.prefixlen = 0;
	rid.family = AF_INET;

	if (argv_find(argv, argc, "NAME", &idx))
		VRF_GET_ID(vrf_id, argv[idx]->arg, false);

	zvrf = vrf_info_lookup(vrf_id);
	router_id_set(AFI_IP, &rid, zvrf);

	return CMD_SUCCESS;
}

ALIAS (no_ip_router_id,
       no_router_id_cmd,
       "no router-id [A.B.C.D vrf NAME]",
       NO_STR
       "Remove the manually configured router-id\n"
       "IP address to use for router-id\n"
       VRF_CMD_HELP_STR);

DEFUN (no_ipv6_router_id,
       no_ipv6_router_id_cmd,
       "no ipv6 router-id [X:X::X:X vrf NAME]",
       NO_STR
       IPV6_STR
       "Remove the manually configured IPv6 router-id\n"
       "IPv6 address to use for router-id\n"
       VRF_CMD_HELP_STR)
{
	int idx = 0;
	struct prefix rid;
	vrf_id_t vrf_id = VRF_DEFAULT;
	struct zebra_vrf *zvrf;

	memset(&rid, 0, sizeof(rid));
	rid.family = AF_INET;

	if (argv_find(argv, argc, "NAME", &idx))
		VRF_GET_ID(vrf_id, argv[idx]->arg, false);

	zvrf = vrf_info_lookup(vrf_id);
	router_id_set(AFI_IP6, &rid, zvrf);

	return CMD_SUCCESS;
}

DEFUN (no_ip_router_id_in_vrf,
       no_ip_router_id_in_vrf_cmd,
       "no ip router-id [A.B.C.D]",
       NO_STR
       IP_STR
       "Remove the manually configured router-id\n"
       "IP address to use for router-id\n")
{
	ZEBRA_DECLVAR_CONTEXT(vrf, zvrf);

	struct prefix rid;

	rid.u.prefix4.s_addr = 0;
	rid.prefixlen = 0;
	rid.family = AF_INET;

	router_id_set(AFI_IP, &rid, zvrf);

	return CMD_SUCCESS;
}

ALIAS (no_ip_router_id_in_vrf,
       no_router_id_in_vrf_cmd,
       "no router-id [A.B.C.D]",
       NO_STR
       "Remove the manually configured router-id\n"
       "IP address to use for router-id\n");

DEFUN (no_ipv6_router_id_in_vrf,
       no_ipv6_router_id_in_vrf_cmd,
       "no ipv6 router-id [X:X::X:X]",
       NO_STR
       IP6_STR
       "Remove the manually configured IPv6 router-id\n"
       "IPv6 address to use for router-id\n")
{
	ZEBRA_DECLVAR_CONTEXT(vrf, zvrf);

	struct prefix rid;

	memset(&rid, 0, sizeof(rid));
	rid.family = AF_INET;

	router_id_set(AFI_IP6, &rid, zvrf);

	return CMD_SUCCESS;
}

DEFUN (show_ip_router_id,
       show_ip_router_id_cmd,
       "show [ip|ipv6] router-id [vrf NAME]",
       SHOW_STR
       IP_STR
       IPV6_STR
       "Show the configured router-id\n"
       VRF_CMD_HELP_STR)
{
	int idx = 0;
	vrf_id_t vrf_id = VRF_DEFAULT;
	struct zebra_vrf *zvrf;
	const char *vrf_name = "default";
	char addr_name[INET6_ADDRSTRLEN];
	int is_ipv6 = 0;

	is_ipv6 = argv_find(argv, argc, "ipv6", &idx);

	if (argv_find(argv, argc, "NAME", &idx)) {
		VRF_GET_ID(vrf_id, argv[idx]->arg, false);
		vrf_name = argv[idx]->arg;
	}

	zvrf = vrf_info_get(vrf_id);

	if (zvrf != NULL) {
		if (is_ipv6) {
			if (router_id_v6_is_any(&zvrf->rid6_user_assigned))
				return CMD_SUCCESS;
			inet_ntop(AF_INET6, &zvrf->rid6_user_assigned.u.prefix6,
				  addr_name, sizeof(addr_name));
		} else {
			if (zvrf->rid_user_assigned.u.prefix4.s_addr
			    == INADDR_ANY)
				return CMD_SUCCESS;
			inet_ntop(AF_INET, &zvrf->rid_user_assigned.u.prefix4,
				  addr_name, sizeof(addr_name));
		}

		vty_out(vty, "zebra:\n");
		vty_out(vty, "     router-id %s vrf %s\n", addr_name, vrf_name);
	}

	return CMD_SUCCESS;
}

static int router_id_cmp(void *a, void *b)
{
	const struct connected *ifa = (const struct connected *)a;
	const struct connected *ifb = (const struct connected *)b;

	return IPV4_ADDR_CMP(&ifa->address->u.prefix4.s_addr,
			     &ifb->address->u.prefix4.s_addr);
}

static int router_id_v6_cmp(void *a, void *b)
{
	const struct connected *ifa = (const struct connected *)a;
	const struct connected *ifb = (const struct connected *)b;

	return IPV6_ADDR_CMP(&ifa->address->u.prefix6,
			     &ifb->address->u.prefix6);
}

void router_id_cmd_init(void)
{
	install_element(CONFIG_NODE, &ip_router_id_cmd);
	install_element(CONFIG_NODE, &router_id_cmd);
	install_element(CONFIG_NODE, &ipv6_router_id_cmd);
	install_element(CONFIG_NODE, &no_ip_router_id_cmd);
	install_element(CONFIG_NODE, &no_router_id_cmd);
	install_element(CONFIG_NODE, &ip_router_id_in_vrf_cmd);
	install_element(VRF_NODE, &ip_router_id_in_vrf_cmd);
	install_element(CONFIG_NODE, &router_id_in_vrf_cmd);
	install_element(VRF_NODE, &router_id_in_vrf_cmd);
	install_element(CONFIG_NODE, &ipv6_router_id_in_vrf_cmd);
	install_element(VRF_NODE, &ipv6_router_id_in_vrf_cmd);
	install_element(CONFIG_NODE, &no_ipv6_router_id_cmd);
	install_element(CONFIG_NODE, &no_ip_router_id_in_vrf_cmd);
	install_element(VRF_NODE, &no_ip_router_id_in_vrf_cmd);
	install_element(CONFIG_NODE, &no_router_id_in_vrf_cmd);
	install_element(VRF_NODE, &no_router_id_in_vrf_cmd);
	install_element(CONFIG_NODE, &no_ipv6_router_id_in_vrf_cmd);
	install_element(VRF_NODE, &no_ipv6_router_id_in_vrf_cmd);
	install_element(VIEW_NODE, &show_ip_router_id_cmd);
}

void router_id_init(struct zebra_vrf *zvrf)
{
	zvrf->rid_all_sorted_list = &zvrf->_rid_all_sorted_list;
	zvrf->rid_lo_sorted_list = &zvrf->_rid_lo_sorted_list;
	zvrf->rid6_all_sorted_list = &zvrf->_rid6_all_sorted_list;
	zvrf->rid6_lo_sorted_list = &zvrf->_rid6_lo_sorted_list;

	memset(zvrf->rid_all_sorted_list, 0,
	       sizeof(zvrf->_rid_all_sorted_list));
	memset(zvrf->rid_lo_sorted_list, 0, sizeof(zvrf->_rid_lo_sorted_list));
	memset(&zvrf->rid_user_assigned, 0, sizeof(zvrf->rid_user_assigned));
	memset(zvrf->rid6_all_sorted_list, 0,
	       sizeof(zvrf->_rid6_all_sorted_list));
	memset(zvrf->rid6_lo_sorted_list, 0,
	       sizeof(zvrf->_rid6_lo_sorted_list));
	memset(&zvrf->rid6_user_assigned, 0, sizeof(zvrf->rid6_user_assigned));

	zvrf->rid_all_sorted_list->cmp = router_id_cmp;
	zvrf->rid_lo_sorted_list->cmp = router_id_cmp;
	zvrf->rid6_all_sorted_list->cmp = router_id_v6_cmp;
	zvrf->rid6_lo_sorted_list->cmp = router_id_v6_cmp;

	zvrf->rid_user_assigned.family = AF_INET;
	zvrf->rid_user_assigned.prefixlen = 32;
	zvrf->rid6_user_assigned.family = AF_INET6;
	zvrf->rid6_user_assigned.prefixlen = 128;
}
Commit	Line	Data
18a6dce6	1	/*
	2	* Router ID for zebra daemon.
	3	*
d62a17ae	4	* Copyright (C) 2004 James R. Leu
18a6dce6	5	*
	6	* This file is part of Quagga routing suite.
	7	*
	8	* Quagga is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the
	10	* Free Software Foundation; either version 2, or (at your option) any
	11	* later version.
	12	*
	13	* Quagga is distributed in the hope that it will be useful, but
	14	* WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* General Public License for more details.
	17	*
896014f4 DL	18	* You should have received a copy of the GNU General Public License along
	19	* with this program; see the file COPYING; if not, write to the Free Software
	20	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18a6dce6	21	*/
	22
	23	#include <zebra.h>
	24
	25	#include "if.h"
	26	#include "vty.h"
	27	#include "sockunion.h"
	28	#include "prefix.h"
	29	#include "stream.h"
	30	#include "command.h"
	31	#include "memory.h"
	32	#include "ioctl.h"
	33	#include "connected.h"
	34	#include "network.h"
	35	#include "log.h"
	36	#include "table.h"
	37	#include "rib.h"
c6ffe645	38	#include "vrf.h"
18a6dce6	39
161e9ab7	40	#include "zebra/zebra_router.h"
bf094f69	41	#include "zebra/zapi_msg.h"
7c551956	42	#include "zebra/zebra_vrf.h"
a1ac18c4	43	#include "zebra/router-id.h"
6dc686a2	44	#include "zebra/redistribute.h"
18a6dce6	45
d62a17ae	46	static struct connected router_id_find_node(struct list l,
d62a17ae	47	struct connected *ifc)
18a6dce6	48	{
d62a17ae	49	struct listnode *node;
d62a17ae	50	struct connected *c;
18a6dce6	51
d62a17ae	52	for (ALL_LIST_ELEMENTS_RO(l, node, c))
	53	if (prefix_same(ifc->address, c->address))
	54	return c;
1eb8ef25	55
d62a17ae	56	return NULL;
18a6dce6	57	}
18a6dce6	58
d62a17ae	59	static int router_id_bad_address(struct connected *ifc)
18a6dce6	60	{
d62a17ae	61	/* non-redistributable addresses shouldn't be used for RIDs either */
	62	if (!zebra_check_addr(ifc->address))
	63	return 1;
	64
	65	return 0;
18a6dce6	66	}
18a6dce6	67
98a3fb0a SM	68	static bool router_id_v6_is_any(struct prefix *p)
	69	{
	70	return memcmp(&p->u.prefix6, &in6addr_any, sizeof(struct in6_addr))
	71	== 0;
	72	}
	73
	74	int router_id_get(afi_t afi, struct prefix p, struct zebra_vrf zvrf)
18a6dce6	75	{
d62a17ae	76	struct listnode *node;
d62a17ae	77	struct connected *c;
98a3fb0a SM	78	struct in6_addr *addr = NULL;
	79
	80	switch (afi) {
	81	case AFI_IP:
	82	p->u.prefix4.s_addr = INADDR_ANY;
	83	p->family = AF_INET;
	84	p->prefixlen = 32;
	85	if (zvrf->rid_user_assigned.u.prefix4.s_addr != INADDR_ANY)
	86	p->u.prefix4.s_addr =
	87	zvrf->rid_user_assigned.u.prefix4.s_addr;
	88	else if (!list_isempty(zvrf->rid_lo_sorted_list)) {
	89	node = listtail(zvrf->rid_lo_sorted_list);
	90	c = listgetdata(node);
	91	p->u.prefix4.s_addr = c->address->u.prefix4.s_addr;
	92	} else if (!list_isempty(zvrf->rid_all_sorted_list)) {
	93	node = listtail(zvrf->rid_all_sorted_list);
	94	c = listgetdata(node);
	95	p->u.prefix4.s_addr = c->address->u.prefix4.s_addr;
	96	}
	97	return 0;
	98	case AFI_IP6:
	99	p->u.prefix6 = in6addr_any;
	100	p->family = AF_INET6;
	101	p->prefixlen = 128;
	102	if (!router_id_v6_is_any(&zvrf->rid6_user_assigned))
	103	addr = &zvrf->rid6_user_assigned.u.prefix6;
	104	else if (!list_isempty(zvrf->rid6_lo_sorted_list)) {
	105	node = listtail(zvrf->rid6_lo_sorted_list);
	106	c = listgetdata(node);
	107	addr = &c->address->u.prefix6;
	108	} else if (!list_isempty(zvrf->rid6_all_sorted_list)) {
	109	node = listtail(zvrf->rid6_all_sorted_list);
	110	c = listgetdata(node);
	111	addr = &c->address->u.prefix6;
	112	}
	113	if (addr)
	114	memcpy(&p->u.prefix6, addr, sizeof(struct in6_addr));
	115	return 0;
	116	default:
	117	return -1;
d62a17ae	118	}
18a6dce6	119	}
18a6dce6	120
98a3fb0a	121	static int router_id_set(afi_t afi, struct prefix p, struct zebra_vrf zvrf)
18a6dce6	122	{
d62a17ae	123	struct prefix p2;
	124	struct listnode *node;
	125	struct zserv *client;
d62a17ae	126
98a3fb0a SM	127	switch (afi) {
	128	case AFI_IP:
	129	zvrf->rid_user_assigned.u.prefix4.s_addr = p->u.prefix4.s_addr;
	130	break;
	131	case AFI_IP6:
	132	zvrf->rid6_user_assigned.u.prefix6 = p->u.prefix6;
	133	break;
	134	default:
	135	return -1;
	136	}
d62a17ae	137
98a3fb0a	138	router_id_get(afi, &p2, zvrf);
d62a17ae	139
161e9ab7	140	for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client))
98a3fb0a SM	141	zsend_router_id_update(client, afi, &p2, zvrf->vrf->vrf_id);
	142
	143	return 0;
18a6dce6	144	}
18a6dce6	145
d62a17ae	146	void router_id_add_address(struct connected *ifc)
18a6dce6	147	{
d62a17ae	148	struct list *l = NULL;
	149	struct listnode *node;
	150	struct prefix before;
	151	struct prefix after;
	152	struct zserv *client;
a36898e7	153	struct zebra_vrf *zvrf = vrf_info_get(ifc->ifp->vrf_id);
98a3fb0a SM	154	afi_t afi;
	155	struct list *rid_lo;
	156	struct list *rid_all;
d62a17ae	157
	158	if (router_id_bad_address(ifc))
	159	return;
	160
98a3fb0a SM	161	switch (ifc->address->family) {
	162	case AF_INET:
	163	afi = AFI_IP;
	164	rid_lo = zvrf->rid_lo_sorted_list;
	165	rid_all = zvrf->rid_all_sorted_list;
	166	break;
	167	case AF_INET6:
	168	afi = AFI_IP6;
	169	rid_lo = zvrf->rid6_lo_sorted_list;
	170	rid_all = zvrf->rid6_all_sorted_list;
	171	break;
	172	default:
	173	return;
	174	}
d62a17ae	175
98a3fb0a SM	176	router_id_get(afi, &before, zvrf);
	177
	178	l = if_is_loopback(ifc->ifp) ? rid_lo : rid_all;
d62a17ae	179
	180	if (!router_id_find_node(l, ifc))
	181	listnode_add_sort(l, ifc);
	182
98a3fb0a	183	router_id_get(afi, &after, zvrf);
d62a17ae	184
	185	if (prefix_same(&before, &after))
	186	return;
	187
161e9ab7	188	for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client))
98a3fb0a	189	zsend_router_id_update(client, afi, &after, zvrf_id(zvrf));
18a6dce6	190	}
18a6dce6	191
d62a17ae	192	void router_id_del_address(struct connected *ifc)
18a6dce6	193	{
d62a17ae	194	struct connected *c;
	195	struct list *l;
	196	struct prefix after;
	197	struct prefix before;
	198	struct listnode *node;
	199	struct zserv *client;
a36898e7	200	struct zebra_vrf *zvrf = vrf_info_get(ifc->ifp->vrf_id);
98a3fb0a SM	201	afi_t afi;
	202	struct list *rid_lo;
	203	struct list *rid_all;
18a6dce6	204
d62a17ae	205	if (router_id_bad_address(ifc))
d62a17ae	206	return;
18a6dce6	207
98a3fb0a SM	208	switch (ifc->address->family) {
	209	case AF_INET:
	210	afi = AFI_IP;
	211	rid_lo = zvrf->rid_lo_sorted_list;
	212	rid_all = zvrf->rid_all_sorted_list;
	213	break;
	214	case AF_INET6:
	215	afi = AFI_IP6;
	216	rid_lo = zvrf->rid6_lo_sorted_list;
	217	rid_all = zvrf->rid6_all_sorted_list;
	218	break;
	219	default:
	220	return;
	221	}
	222
	223	router_id_get(afi, &before, zvrf);
18a6dce6	224
106935f6	225	if (if_is_loopback(ifc->ifp))
98a3fb0a	226	l = rid_lo;
d62a17ae	227	else
98a3fb0a	228	l = rid_all;
18a6dce6	229
d62a17ae	230	if ((c = router_id_find_node(l, ifc)))
d62a17ae	231	listnode_delete(l, c);
18a6dce6	232
98a3fb0a	233	router_id_get(afi, &after, zvrf);
18a6dce6	234
d62a17ae	235	if (prefix_same(&before, &after))
d62a17ae	236	return;
18a6dce6	237
161e9ab7	238	for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client))
98a3fb0a	239	zsend_router_id_update(client, afi, &after, zvrf_id(zvrf));
18a6dce6	240	}
18a6dce6	241
03fba42e	242	void router_id_write(struct vty vty, struct zebra_vrf zvrf)
18a6dce6	243	{
03fba42e DS	244	char space[2];
	245
	246	memset(space, 0, sizeof(space));
	247
	248	if (zvrf_id(zvrf) != VRF_DEFAULT)
	249	snprintf(space, sizeof(space), "%s", " ");
d62a17ae	250
03fba42e	251	if (zvrf->rid_user_assigned.u.prefix4.s_addr != INADDR_ANY) {
98a3fb0a SM	252	vty_out(vty, "%sip router-id %pI4\n", space,
	253	&zvrf->rid_user_assigned.u.prefix4);
	254	}
	255	if (!router_id_v6_is_any(&zvrf->rid6_user_assigned)) {
	256	vty_out(vty, "%sipv6 router-id %pI6\n", space,
	257	&zvrf->rid_user_assigned.u.prefix6);
03fba42e	258	}
18a6dce6	259	}
18a6dce6	260
98a3fb0a SM	261	DEFUN (ip_router_id,
	262	ip_router_id_cmd,
	263	"ip router-id A.B.C.D vrf NAME",
	264	IP_STR
18a6dce6	265	"Manually set the router-id\n"
98a3fb0a SM	266	"IP address to use for router-id\n"
98a3fb0a SM	267	VRF_CMD_HELP_STR)
18a6dce6	268	{
98a3fb0a SM	269	int idx = 0;
	270	struct prefix rid;
	271	vrf_id_t vrf_id;
03fba42e	272	struct zebra_vrf *zvrf;
92300491	273
98a3fb0a	274	argv_find(argv, argc, "A.B.C.D", &idx);
18a6dce6	275
98a3fb0a	276	if (!inet_pton(AF_INET, argv[idx]->arg, &rid.u.prefix4))
d62a17ae	277	return CMD_WARNING_CONFIG_FAILED;
18a6dce6	278
d62a17ae	279	rid.prefixlen = 32;
d62a17ae	280	rid.family = AF_INET;
18a6dce6	281
98a3fb0a SM	282	argv_find(argv, argc, "NAME", &idx);
98a3fb0a SM	283	VRF_GET_ID(vrf_id, argv[idx]->arg, false);
c6ffe645	284
03fba42e	285	zvrf = vrf_info_lookup(vrf_id);
98a3fb0a	286	router_id_set(AFI_IP, &rid, zvrf);
03fba42e DS	287
	288	return CMD_SUCCESS;
	289	}
	290
98a3fb0a SM	291	ALIAS (ip_router_id,
	292	router_id_cmd,
	293	"router-id A.B.C.D vrf NAME",
	294	"Manually set the router-id\n"
	295	"IP address to use for router-id\n"
	296	VRF_CMD_HELP_STR);
	297
	298	DEFUN (ipv6_router_id,
	299	ipv6_router_id_cmd,
	300	"ipv6 router-id X:X::X:X vrf NAME",
	301	IPV6_STR
	302	"Manually set the router-id\n"
	303	"IPv6 address to use for router-id\n"
	304	VRF_CMD_HELP_STR)
	305	{
	306	int idx = 0;
	307	struct prefix rid;
	308	vrf_id_t vrf_id;
	309	struct zebra_vrf *zvrf;
	310
	311	argv_find(argv, argc, "X:X::X:X", &idx);
	312
	313	if (!inet_pton(AF_INET6, argv[idx]->arg, &rid.u.prefix6))
	314	return CMD_WARNING_CONFIG_FAILED;
	315
	316	rid.prefixlen = 128;
	317	rid.family = AF_INET6;
	318
	319	argv_find(argv, argc, "NAME", &idx);
	320	VRF_GET_ID(vrf_id, argv[idx]->arg, false);
	321
	322	zvrf = vrf_info_lookup(vrf_id);
	323	router_id_set(AFI_IP6, &rid, zvrf);
	324
	325	return CMD_SUCCESS;
	326	}
	327
	328
	329	DEFUN (ip_router_id_in_vrf,
	330	ip_router_id_in_vrf_cmd,
	331	"ip router-id A.B.C.D",
	332	IP_STR
02c671af	333	"Manually set the router-id\n"
03fba42e DS	334	"IP address to use for router-id\n")
	335	{
	336	ZEBRA_DECLVAR_CONTEXT(vrf, zvrf);
98a3fb0a	337	int idx = 0;
03fba42e DS	338	struct prefix rid;
03fba42e DS	339
98a3fb0a SM	340	argv_find(argv, argc, "A.B.C.D", &idx);
	341
	342	if (!inet_pton(AF_INET, argv[idx]->arg, &rid.u.prefix4))
03fba42e DS	343	return CMD_WARNING_CONFIG_FAILED;
	344
	345	rid.prefixlen = 32;
	346	rid.family = AF_INET;
	347
98a3fb0a	348	router_id_set(AFI_IP, &rid, zvrf);
18a6dce6	349
d62a17ae	350	return CMD_SUCCESS;
18a6dce6	351	}
18a6dce6	352
98a3fb0a SM	353	ALIAS (ip_router_id_in_vrf,
	354	router_id_in_vrf_cmd,
	355	"router-id A.B.C.D",
	356	"Manually set the router-id\n"
	357	"IP address to use for router-id\n");
	358
	359	DEFUN (ipv6_router_id_in_vrf,
	360	ipv6_router_id_in_vrf_cmd,
	361	"ipv6 router-id X:X::X:X",
	362	IP6_STR
02c671af	363	"Manually set the IPv6 router-id\n"
98a3fb0a SM	364	"IPV6 address to use for router-id\n")
	365	{
	366	ZEBRA_DECLVAR_CONTEXT(vrf, zvrf);
	367	int idx = 0;
	368	struct prefix rid;
	369
	370	argv_find(argv, argc, "X:X::X:X", &idx);
	371
	372	if (!inet_pton(AF_INET6, argv[idx]->arg, &rid.u.prefix6))
	373	return CMD_WARNING_CONFIG_FAILED;
	374
	375	rid.prefixlen = 128;
	376	rid.family = AF_INET6;
	377
	378	router_id_set(AFI_IP6, &rid, zvrf);
	379
	380	return CMD_SUCCESS;
	381	}
	382
	383	DEFUN (no_ip_router_id,
	384	no_ip_router_id_cmd,
	385	"no ip router-id [A.B.C.D vrf NAME]",
18a6dce6	386	NO_STR
98a3fb0a	387	IP_STR
92300491	388	"Remove the manually configured router-id\n"
98a3fb0a SM	389	"IP address to use for router-id\n"
98a3fb0a SM	390	VRF_CMD_HELP_STR)
18a6dce6	391	{
98a3fb0a	392	int idx = 0;
d62a17ae	393	struct prefix rid;
d62a17ae	394	vrf_id_t vrf_id = VRF_DEFAULT;
03fba42e	395	struct zebra_vrf *zvrf;
18a6dce6	396
d62a17ae	397	rid.u.prefix4.s_addr = 0;
	398	rid.prefixlen = 0;
	399	rid.family = AF_INET;
18a6dce6	400
98a3fb0a SM	401	if (argv_find(argv, argc, "NAME", &idx))
98a3fb0a SM	402	VRF_GET_ID(vrf_id, argv[idx]->arg, false);
c6ffe645	403
98a3fb0a SM	404	zvrf = vrf_info_lookup(vrf_id);
98a3fb0a SM	405	router_id_set(AFI_IP, &rid, zvrf);
03fba42e DS	406
	407	return CMD_SUCCESS;
	408	}
	409
98a3fb0a SM	410	ALIAS (no_ip_router_id,
	411	no_router_id_cmd,
	412	"no router-id [A.B.C.D vrf NAME]",
	413	NO_STR
	414	"Remove the manually configured router-id\n"
	415	"IP address to use for router-id\n"
	416	VRF_CMD_HELP_STR);
	417
	418	DEFUN (no_ipv6_router_id,
	419	no_ipv6_router_id_cmd,
	420	"no ipv6 router-id [X:X::X:X vrf NAME]",
	421	NO_STR
	422	IPV6_STR
	423	"Remove the manually configured IPv6 router-id\n"
	424	"IPv6 address to use for router-id\n"
	425	VRF_CMD_HELP_STR)
	426	{
	427	int idx = 0;
	428	struct prefix rid;
	429	vrf_id_t vrf_id = VRF_DEFAULT;
	430	struct zebra_vrf *zvrf;
	431
	432	memset(&rid, 0, sizeof(rid));
	433	rid.family = AF_INET;
	434
	435	if (argv_find(argv, argc, "NAME", &idx))
	436	VRF_GET_ID(vrf_id, argv[idx]->arg, false);
	437
	438	zvrf = vrf_info_lookup(vrf_id);
	439	router_id_set(AFI_IP6, &rid, zvrf);
	440
	441	return CMD_SUCCESS;
	442	}
	443
	444	DEFUN (no_ip_router_id_in_vrf,
	445	no_ip_router_id_in_vrf_cmd,
	446	"no ip router-id [A.B.C.D]",
03fba42e	447	NO_STR
98a3fb0a	448	IP_STR
03fba42e DS	449	"Remove the manually configured router-id\n"
	450	"IP address to use for router-id\n")
	451	{
	452	ZEBRA_DECLVAR_CONTEXT(vrf, zvrf);
	453
	454	struct prefix rid;
	455
	456	rid.u.prefix4.s_addr = 0;
	457	rid.prefixlen = 0;
	458	rid.family = AF_INET;
	459
98a3fb0a	460	router_id_set(AFI_IP, &rid, zvrf);
18a6dce6	461
d62a17ae	462	return CMD_SUCCESS;
18a6dce6	463	}
18a6dce6	464
98a3fb0a SM	465	ALIAS (no_ip_router_id_in_vrf,
	466	no_router_id_in_vrf_cmd,
	467	"no router-id [A.B.C.D]",
	468	NO_STR
	469	"Remove the manually configured router-id\n"
	470	"IP address to use for router-id\n");
	471
	472	DEFUN (no_ipv6_router_id_in_vrf,
	473	no_ipv6_router_id_in_vrf_cmd,
	474	"no ipv6 router-id [X:X::X:X]",
	475	NO_STR
	476	IP6_STR
	477	"Remove the manually configured IPv6 router-id\n"
	478	"IPv6 address to use for router-id\n")
	479	{
	480	ZEBRA_DECLVAR_CONTEXT(vrf, zvrf);
	481
	482	struct prefix rid;
	483
	484	memset(&rid, 0, sizeof(rid));
	485	rid.family = AF_INET;
	486
	487	router_id_set(AFI_IP6, &rid, zvrf);
	488
	489	return CMD_SUCCESS;
	490	}
	491
	492	DEFUN (show_ip_router_id,
	493	show_ip_router_id_cmd,
	494	"show [ip\|ipv6] router-id [vrf NAME]",
13b01f2f	495	SHOW_STR
98a3fb0a SM	496	IP_STR
98a3fb0a SM	497	IPV6_STR
13b01f2f JAG	498	"Show the configured router-id\n"
	499	VRF_CMD_HELP_STR)
	500	{
98a3fb0a SM	501	int idx = 0;
	502	vrf_id_t vrf_id = VRF_DEFAULT;
	503	struct zebra_vrf *zvrf;
	504	const char *vrf_name = "default";
	505	char addr_name[INET6_ADDRSTRLEN];
	506	int is_ipv6 = 0;
13b01f2f	507
98a3fb0a	508	is_ipv6 = argv_find(argv, argc, "ipv6", &idx);
13b01f2f	509
98a3fb0a SM	510	if (argv_find(argv, argc, "NAME", &idx)) {
	511	VRF_GET_ID(vrf_id, argv[idx]->arg, false);
	512	vrf_name = argv[idx]->arg;
	513	}
13b01f2f	514
98a3fb0a	515	zvrf = vrf_info_get(vrf_id);
13b01f2f	516
98a3fb0a SM	517	if (zvrf != NULL) {
	518	if (is_ipv6) {
	519	if (router_id_v6_is_any(&zvrf->rid6_user_assigned))
	520	return CMD_SUCCESS;
	521	inet_ntop(AF_INET6, &zvrf->rid6_user_assigned.u.prefix6,
	522	addr_name, sizeof(addr_name));
	523	} else {
3a6290bd DA	524	if (zvrf->rid_user_assigned.u.prefix4.s_addr
3a6290bd DA	525	== INADDR_ANY)
98a3fb0a SM	526	return CMD_SUCCESS;
	527	inet_ntop(AF_INET, &zvrf->rid_user_assigned.u.prefix4,
	528	addr_name, sizeof(addr_name));
	529	}
	530
	531	vty_out(vty, "zebra:\n");
	532	vty_out(vty, " router-id %s vrf %s\n", addr_name, vrf_name);
	533	}
13b01f2f	534
98a3fb0a	535	return CMD_SUCCESS;
13b01f2f	536	}
813d4307	537
d62a17ae	538	static int router_id_cmp(void a, void b)
18a6dce6	539	{
d62a17ae	540	const struct connected ifa = (const struct connected )a;
d62a17ae	541	const struct connected ifb = (const struct connected )b;
18a6dce6	542
d62a17ae	543	return IPV4_ADDR_CMP(&ifa->address->u.prefix4.s_addr,
d62a17ae	544	&ifb->address->u.prefix4.s_addr);
18a6dce6	545	}
18a6dce6	546
98a3fb0a SM	547	static int router_id_v6_cmp(void a, void b)
	548	{
	549	const struct connected ifa = (const struct connected )a;
	550	const struct connected ifb = (const struct connected )b;
	551
	552	return IPV6_ADDR_CMP(&ifa->address->u.prefix6,
	553	&ifb->address->u.prefix6);
	554	}
	555
d62a17ae	556	void router_id_cmd_init(void)
18a6dce6	557	{
98a3fb0a	558	install_element(CONFIG_NODE, &ip_router_id_cmd);
d62a17ae	559	install_element(CONFIG_NODE, &router_id_cmd);
98a3fb0a SM	560	install_element(CONFIG_NODE, &ipv6_router_id_cmd);
98a3fb0a SM	561	install_element(CONFIG_NODE, &no_ip_router_id_cmd);
d62a17ae	562	install_element(CONFIG_NODE, &no_router_id_cmd);
98a3fb0a SM	563	install_element(CONFIG_NODE, &ip_router_id_in_vrf_cmd);
98a3fb0a SM	564	install_element(VRF_NODE, &ip_router_id_in_vrf_cmd);
03fba42e DS	565	install_element(CONFIG_NODE, &router_id_in_vrf_cmd);
03fba42e DS	566	install_element(VRF_NODE, &router_id_in_vrf_cmd);
98a3fb0a SM	567	install_element(CONFIG_NODE, &ipv6_router_id_in_vrf_cmd);
	568	install_element(VRF_NODE, &ipv6_router_id_in_vrf_cmd);
	569	install_element(CONFIG_NODE, &no_ipv6_router_id_cmd);
	570	install_element(CONFIG_NODE, &no_ip_router_id_in_vrf_cmd);
	571	install_element(VRF_NODE, &no_ip_router_id_in_vrf_cmd);
03fba42e DS	572	install_element(CONFIG_NODE, &no_router_id_in_vrf_cmd);
03fba42e DS	573	install_element(VRF_NODE, &no_router_id_in_vrf_cmd);
98a3fb0a SM	574	install_element(CONFIG_NODE, &no_ipv6_router_id_in_vrf_cmd);
	575	install_element(VRF_NODE, &no_ipv6_router_id_in_vrf_cmd);
	576	install_element(VIEW_NODE, &show_ip_router_id_cmd);
c6ffe645 FL	577	}
c6ffe645 FL	578
d62a17ae	579	void router_id_init(struct zebra_vrf *zvrf)
c6ffe645	580	{
d62a17ae	581	zvrf->rid_all_sorted_list = &zvrf->_rid_all_sorted_list;
d62a17ae	582	zvrf->rid_lo_sorted_list = &zvrf->_rid_lo_sorted_list;
98a3fb0a SM	583	zvrf->rid6_all_sorted_list = &zvrf->_rid6_all_sorted_list;
98a3fb0a SM	584	zvrf->rid6_lo_sorted_list = &zvrf->_rid6_lo_sorted_list;
18a6dce6	585
d62a17ae	586	memset(zvrf->rid_all_sorted_list, 0,
	587	sizeof(zvrf->_rid_all_sorted_list));
	588	memset(zvrf->rid_lo_sorted_list, 0, sizeof(zvrf->_rid_lo_sorted_list));
	589	memset(&zvrf->rid_user_assigned, 0, sizeof(zvrf->rid_user_assigned));
98a3fb0a SM	590	memset(zvrf->rid6_all_sorted_list, 0,
	591	sizeof(zvrf->_rid6_all_sorted_list));
	592	memset(zvrf->rid6_lo_sorted_list, 0,
	593	sizeof(zvrf->_rid6_lo_sorted_list));
	594	memset(&zvrf->rid6_user_assigned, 0, sizeof(zvrf->rid6_user_assigned));
18a6dce6	595
d62a17ae	596	zvrf->rid_all_sorted_list->cmp = router_id_cmp;
d62a17ae	597	zvrf->rid_lo_sorted_list->cmp = router_id_cmp;
98a3fb0a SM	598	zvrf->rid6_all_sorted_list->cmp = router_id_v6_cmp;
98a3fb0a SM	599	zvrf->rid6_lo_sorted_list->cmp = router_id_v6_cmp;
18a6dce6	600
d62a17ae	601	zvrf->rid_user_assigned.family = AF_INET;
d62a17ae	602	zvrf->rid_user_assigned.prefixlen = 32;
98a3fb0a SM	603	zvrf->rid6_user_assigned.family = AF_INET6;
98a3fb0a SM	604	zvrf->rid6_user_assigned.prefixlen = 128;
18a6dce6	605	}