[mirror_frr.git] / vrrpd / vrrp_zebra.c

/*
 * VRRP Zebra interfacing.
 * Copyright (C) 2018-2019 Cumulus Networks, Inc.
 * Quentin Young
 *
 * This program 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 of the License, or (at your option)
 * any later version.
 *
 * This program 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 "lib/if.h"
#include "lib/linklist.h"
#include "lib/log.h"
#include "lib/prefix.h"
#include "lib/vty.h"
#include "lib/zclient.h"

#include "vrrp.h"
#include "vrrp_zebra.h"

static struct zclient *zclient = NULL;

static void vrrp_zebra_connected(struct zclient *zclient)
{
	fprintf(stderr, "Zclient connected\n");
	zclient_send_reg_requests(zclient, VRF_DEFAULT);
}

/* Router-id update message from zebra. */
static int vrrp_router_id_update_zebra(int command, struct zclient *zclient,
				       zebra_size_t length, vrf_id_t vrf_id)
{
	struct prefix router_id;

	zebra_router_id_update_read(zclient->ibuf, &router_id);

	return 0;
}

static int vrrp_zebra_if_add(int command, struct zclient *zclient,
			     zebra_size_t length, vrf_id_t vrf_id)
{
	struct interface *ifp;

	/*
	 * zebra api adds/dels interfaces using the same call
	 * interface_add_read below, see comments in lib/zclient.c
	 */
	ifp = zebra_interface_add_read(zclient->ibuf, vrf_id);
	if (!ifp)
		return 0;

	/* FIXME: handle subinterface creation here */

	return 0;
}

static int vrrp_zebra_if_del(int command, struct zclient *zclient,
			     zebra_size_t length, vrf_id_t vrf_id)
{
	struct interface *ifp;

	ifp = zebra_interface_state_read(zclient->ibuf, vrf_id);
	if (!ifp)
		return 0;

#if 0
	if (VRRP_DEBUG_ZEBRA) {
		zlog_debug(
			"%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d",
			__PRETTY_FUNCTION__, ifp->name, ifp->ifindex, vrf_id,
			(long)ifp->flags, ifp->metric, ifp->mtu,
			if_is_operative(ifp));
	}
#endif

	return 0;
}

static int vrrp_zebra_if_state_up(int command, struct zclient *zclient,
				  zebra_size_t length, vrf_id_t vrf_id)
{
	struct interface *ifp;

	/*
	 * zebra api notifies interface up/down events by using the same call
	 * zebra_interface_state_read below, see comments in lib/zclient.c ifp =
	 * zebra_interface_state_read(zclient->ibuf, vrf_id);
	 */
	ifp = zebra_interface_state_read(zclient->ibuf, vrf_id);
	if (!ifp)
		return 0;

#if 0
	if (VRRP_DEBUG_ZEBRA) {
		zlog_debug(
			"%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d",
			__PRETTY_FUNCTION__, ifp->name, ifp->ifindex, vrf_id,
			(long)ifp->flags, ifp->metric, ifp->mtu,
			if_is_operative(ifp));
	}
#endif

	return 0;
}

static int vrrp_zebra_if_state_down(int command, struct zclient *zclient,
				    zebra_size_t length, vrf_id_t vrf_id)
{
	struct interface *ifp;

	/*
	 * zebra api notifies interface up/down events by using the same call
	 * zebra_interface_state_read below, see comments in lib/zclient.c
	 */
	ifp = zebra_interface_state_read(zclient->ibuf, vrf_id);
	if (!ifp)
		return 0;

#if 0
	if (VRRP_DEBUG_ZEBRA) {
		zlog_debug(
			"%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d",
			__PRETTY_FUNCTION__, ifp->name, ifp->ifindex, vrf_id,
			(long)ifp->flags, ifp->metric, ifp->mtu,
			if_is_operative(ifp));
	}
#endif

	return 0;
}

#ifdef VRRP_DEBUG_IFADDR_DUMP
static void dump_if_address(struct interface *ifp)
{
	struct connected *ifc;
	struct listnode *node;

	zlog_debug("%s %s: interface %s addresses:", __FILE__,
		   __PRETTY_FUNCTION__, ifp->name);

	for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) {
		struct prefix *p = ifc->address;

		if (p->family != AF_INET)
			continue;

		zlog_debug("%s %s: interface %s address %s %s", __FILE__,
			   __PRETTY_FUNCTION__, ifp->name,
			   inet_ntoa(p->u.prefix4),
			   CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY)
				   ? "secondary"
				   : "primary");
	}
}
#endif

static int vrrp_zebra_if_address_add(int command, struct zclient *zclient,
				     zebra_size_t length, vrf_id_t vrf_id)
{
	struct connected *c;

	/*
	 * zebra api notifies address adds/dels events by using the same call
	 * interface_add_read below, see comments in lib/zclient.c
	 *
	 * zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD, ...)
	 * will add address to interface list by calling
	 * connected_add_by_prefix()
	 */
	c = zebra_interface_address_read(command, zclient->ibuf, vrf_id);
	if (!c)
		return 0;

#if 0
	if (VRRP_DEBUG_ZEBRA) {
		char buf[BUFSIZ];
		prefix2str(p, buf, BUFSIZ);
		zlog_debug("%s: %s(%u) connected IP address %s flags %u %s",
			   __PRETTY_FUNCTION__, c->ifp->name, vrf_id, buf,
			   c->flags,
			   CHECK_FLAG(c->flags, ZEBRA_IFA_SECONDARY)
				   ? "secondary"
				   : "primary");

	}
#endif

	return 0;
}

static int vrrp_zebra_if_address_del(int command, struct zclient *client,
				     zebra_size_t length, vrf_id_t vrf_id)
{
	struct connected *c;

	/*
	 * zebra api notifies address adds/dels events by using the same call
	 * interface_add_read below, see comments in lib/zclient.c
	 *
	 * zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE, ...)
	 * will remove address from interface list by calling
	 * connected_delete_by_prefix()
	 */
	c = zebra_interface_address_read(command, client->ibuf, vrf_id);
	if (!c)
		return 0;

	return 0;
}

void vrrp_zebra_radv_set(struct vrrp_router *r, bool enable)
{
	zclient_send_interface_radv_req(zclient, VRF_DEFAULT, r->mvl_ifp,
					enable, VRRP_RADV_INT);
}

void vrrp_zebra_init(void)
{
	/* Socket for receiving updates from Zebra daemon */
	zclient = zclient_new(master, &zclient_options_default);

	zclient->zebra_connected = vrrp_zebra_connected;
	zclient->router_id_update = vrrp_router_id_update_zebra;
	zclient->interface_add = vrrp_zebra_if_add;
	zclient->interface_delete = vrrp_zebra_if_del;
	zclient->interface_up = vrrp_zebra_if_state_up;
	zclient->interface_down = vrrp_zebra_if_state_down;
	zclient->interface_address_add = vrrp_zebra_if_address_add;
	zclient->interface_address_delete = vrrp_zebra_if_address_del;

	zclient_init(zclient, 0, 0, &vrrp_privs);

	zlog_notice("%s: zclient socket initialized", __PRETTY_FUNCTION__);
}
Commit	Line	Data
5435a2bf	1	/*
63d4bd12 QY	2	* VRRP Zebra interfacing.
	3	* Copyright (C) 2018-2019 Cumulus Networks, Inc.
	4	* Quentin Young
5435a2bf QY	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the Free
	8	* Software Foundation; either version 2 of the License, or (at your option)
	9	* any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful, but WITHOUT
	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	14	* more details.
	15	*
	16	* You should have received a copy of the GNU General Public License along
	17	* with this program; see the file COPYING; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20	#include <zebra.h>
	21
b6029d6a	22	#include "lib/if.h"
63d4bd12	23	#include "lib/linklist.h"
b6029d6a QY	24	#include "lib/log.h"
b6029d6a QY	25	#include "lib/prefix.h"
b6029d6a	26	#include "lib/vty.h"
63d4bd12	27	#include "lib/zclient.h"
5435a2bf	28
b6029d6a	29	#include "vrrp.h"
5435a2bf QY	30	#include "vrrp_zebra.h"
5435a2bf QY	31
b6029d6a QY	32	static struct zclient *zclient = NULL;
	33
	34	static void vrrp_zebra_connected(struct zclient *zclient)
	35	{
	36	fprintf(stderr, "Zclient connected\n");
	37	zclient_send_reg_requests(zclient, VRF_DEFAULT);
	38	}
	39
	40	/* Router-id update message from zebra. */
	41	static int vrrp_router_id_update_zebra(int command, struct zclient *zclient,
	42	zebra_size_t length, vrf_id_t vrf_id)
	43	{
	44	struct prefix router_id;
	45
	46	zebra_router_id_update_read(zclient->ibuf, &router_id);
	47
	48	return 0;
	49	}
	50
	51	static int vrrp_zebra_if_add(int command, struct zclient *zclient,
	52	zebra_size_t length, vrf_id_t vrf_id)
	53	{
	54	struct interface *ifp;
	55
	56	/*
	57	* zebra api adds/dels interfaces using the same call
	58	* interface_add_read below, see comments in lib/zclient.c
	59	*/
	60	ifp = zebra_interface_add_read(zclient->ibuf, vrf_id);
	61	if (!ifp)
	62	return 0;
	63
	64	/* FIXME: handle subinterface creation here */
	65
	66	return 0;
	67	}
	68
	69	static int vrrp_zebra_if_del(int command, struct zclient *zclient,
	70	zebra_size_t length, vrf_id_t vrf_id)
	71	{
	72	struct interface *ifp;
	73
	74	ifp = zebra_interface_state_read(zclient->ibuf, vrf_id);
	75	if (!ifp)
	76	return 0;
	77
	78	#if 0
	79	if (VRRP_DEBUG_ZEBRA) {
	80	zlog_debug(
	81	"%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d",
	82	__PRETTY_FUNCTION__, ifp->name, ifp->ifindex, vrf_id,
	83	(long)ifp->flags, ifp->metric, ifp->mtu,
	84	if_is_operative(ifp));
	85	}
	86	#endif
	87
	88	return 0;
	89	}
	90
	91	static int vrrp_zebra_if_state_up(int command, struct zclient *zclient,
	92	zebra_size_t length, vrf_id_t vrf_id)
	93	{
	94	struct interface *ifp;
	95
96	/*
97	* zebra api notifies interface up/down events by using the same call
98	* zebra_interface_state_read below, see comments in lib/zclient.c ifp =
99	* zebra_interface_state_read(zclient->ibuf, vrf_id);
100	*/
101	ifp = zebra_interface_state_read(zclient->ibuf, vrf_id);
102	if (!ifp)
103	return 0;
104
105	#if 0
106	if (VRRP_DEBUG_ZEBRA) {
107	zlog_debug(
108	"%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d",
109	__PRETTY_FUNCTION__, ifp->name, ifp->ifindex, vrf_id,
110	(long)ifp->flags, ifp->metric, ifp->mtu,
111	if_is_operative(ifp));
112	}
113	#endif
114
115	return 0;
116	}
117
118	static int vrrp_zebra_if_state_down(int command, struct zclient *zclient,
119	zebra_size_t length, vrf_id_t vrf_id)
120	{
121	struct interface *ifp;
122
123	/*
124	* zebra api notifies interface up/down events by using the same call
125	* zebra_interface_state_read below, see comments in lib/zclient.c
126	*/
127	ifp = zebra_interface_state_read(zclient->ibuf, vrf_id);
128	if (!ifp)
129	return 0;
130
131	#if 0
132	if (VRRP_DEBUG_ZEBRA) {
133	zlog_debug(
134	"%s: %s index %d(%u) flags %ld metric %d mtu %d operative %d",
135	__PRETTY_FUNCTION__, ifp->name, ifp->ifindex, vrf_id,
136	(long)ifp->flags, ifp->metric, ifp->mtu,
137	if_is_operative(ifp));
138	}
139	#endif
140
141	return 0;
142	}
143
144	#ifdef VRRP_DEBUG_IFADDR_DUMP
145	static void dump_if_address(struct interface *ifp)
146	{
147	struct connected *ifc;
148	struct listnode *node;
149
150	zlog_debug("%s %s: interface %s addresses:", __FILE__,
151	__PRETTY_FUNCTION__, ifp->name);
152
153	for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) {
154	struct prefix *p = ifc->address;
155
156	if (p->family != AF_INET)
157	continue;
158
159	zlog_debug("%s %s: interface %s address %s %s", __FILE__,
160	__PRETTY_FUNCTION__, ifp->name,
161	inet_ntoa(p->u.prefix4),
162	CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY)
163	? "secondary"
164	: "primary");
165	}
166	}
167	#endif
168
169	static int vrrp_zebra_if_address_add(int command, struct zclient *zclient,
170	zebra_size_t length, vrf_id_t vrf_id)
171	{
172	struct connected *c;
173
174	/*
175	* zebra api notifies address adds/dels events by using the same call
176	* interface_add_read below, see comments in lib/zclient.c
177	*
178	* zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD, ...)
179	* will add address to interface list by calling
180	* connected_add_by_prefix()
181	*/
182	c = zebra_interface_address_read(command, zclient->ibuf, vrf_id);
183	if (!c)
184	return 0;
185
186	#if 0
187	if (VRRP_DEBUG_ZEBRA) {
188	char buf[BUFSIZ];
189	prefix2str(p, buf, BUFSIZ);
190	zlog_debug("%s: %s(%u) connected IP address %s flags %u %s",
191	__PRETTY_FUNCTION__, c->ifp->name, vrf_id, buf,
192	c->flags,
193	CHECK_FLAG(c->flags, ZEBRA_IFA_SECONDARY)
194	? "secondary"
195	: "primary");
196
197	}
198	#endif
199
200	return 0;
201	}
202
203	static int vrrp_zebra_if_address_del(int command, struct zclient *client,
204	zebra_size_t length, vrf_id_t vrf_id)
205	{
206	struct connected *c;
207
208	/*
209	* zebra api notifies address adds/dels events by using the same call
210	* interface_add_read below, see comments in lib/zclient.c
211	*
212	* zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE, ...)
213	* will remove address from interface list by calling
214	* connected_delete_by_prefix()
215	*/
216	c = zebra_interface_address_read(command, client->ibuf, vrf_id);
217	if (!c)
218	return 0;
219
220	return 0;
221	}
5435a2bf	222
f3fe0047 QY	223	void vrrp_zebra_radv_set(struct vrrp_router *r, bool enable)
	224	{
	225	zclient_send_interface_radv_req(zclient, VRF_DEFAULT, r->mvl_ifp,
	226	enable, VRRP_RADV_INT);
	227	}
	228
5435a2bf QY	229	void vrrp_zebra_init(void)
5435a2bf QY	230	{
b6029d6a QY	231	/* Socket for receiving updates from Zebra daemon */
b6029d6a QY	232	zclient = zclient_new(master, &zclient_options_default);
5435a2bf	233
b6029d6a QY	234	zclient->zebra_connected = vrrp_zebra_connected;
	235	zclient->router_id_update = vrrp_router_id_update_zebra;
	236	zclient->interface_add = vrrp_zebra_if_add;
	237	zclient->interface_delete = vrrp_zebra_if_del;
	238	zclient->interface_up = vrrp_zebra_if_state_up;
	239	zclient->interface_down = vrrp_zebra_if_state_down;
	240	zclient->interface_address_add = vrrp_zebra_if_address_add;
	241	zclient->interface_address_delete = vrrp_zebra_if_address_del;
5435a2bf QY	242
5435a2bf QY	243	zclient_init(zclient, 0, 0, &vrrp_privs);
5435a2bf	244
b6029d6a QY	245	zlog_notice("%s: zclient socket initialized", __PRETTY_FUNCTION__);
b6029d6a QY	246	}