[mirror_frr.git] / pbrd / pbr_zebra.c

/*
 * Zebra connect code.
 * Copyright (C) 2018 Cumulus Networks, Inc.
 *               Donald Sharp
 *
 * FRR 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.
 *
 * FRR 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 "thread.h"
#include "command.h"
#include "network.h"
#include "prefix.h"
#include "routemap.h"
#include "table.h"
#include "stream.h"
#include "memory.h"
#include "zclient.h"
#include "filter.h"
#include "plist.h"
#include "log.h"
#include "nexthop.h"
#include "nexthop_group.h"

#include "pbr_nht.h"
#include "pbr_map.h"
#include "pbr_memory.h"
#include "pbr_zebra.h"
#include "pbr_debug.h"

DEFINE_MTYPE_STATIC(PBRD, PBR_INTERFACE, "PBR Interface")

/* Zebra structure to hold current status. */
struct zclient *zclient;

struct pbr_interface *pbr_if_new(struct interface *ifp)
{
	struct pbr_interface *pbr_ifp;

	zassert(ifp);
	zassert(!ifp->info);

	pbr_ifp = XCALLOC(MTYPE_PBR_INTERFACE, sizeof(*pbr_ifp));

	if (!pbr_ifp) {
		zlog_err("%s: PBR XCALLOC(%zu) failure", __PRETTY_FUNCTION__,
			 sizeof(*pbr_ifp));
		return 0;
	}

	ifp->info = pbr_ifp;
	return pbr_ifp;
}

/* Inteface addition message from zebra. */
static int interface_add(int command, struct zclient *zclient,
			       zebra_size_t length, vrf_id_t vrf_id)
{
	struct interface *ifp;

	ifp = zebra_interface_add_read(zclient->ibuf, vrf_id);

	if (!ifp)
		return 0;

	if (!ifp->info)
		pbr_if_new(ifp);

	return 0;
}

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

	s = zclient->ibuf;
	/* zebra_interface_state_read () updates interface structure in iflist
	 */
	ifp = zebra_interface_state_read(s, vrf_id);

	if (ifp == NULL)
		return 0;

	if_set_index(ifp, IFINDEX_INTERNAL);

	return 0;
}

static int interface_address_add(int command, struct zclient *zclient,
				 zebra_size_t length, vrf_id_t vrf_id)
{
	zebra_interface_address_read(command, zclient->ibuf, vrf_id);

	return 0;
}

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

	c = zebra_interface_address_read(command, zclient->ibuf, vrf_id);

	if (!c)
		return 0;

	connected_free(c);
	return 0;
}

static int interface_state_up(int command, struct zclient *zclient,
			      zebra_size_t length, vrf_id_t vrf_id)
{

	zebra_interface_state_read(zclient->ibuf, vrf_id);

	return 0;
}

static int interface_state_down(int command, struct zclient *zclient,
				zebra_size_t length, vrf_id_t vrf_id)
{

	zebra_interface_state_read(zclient->ibuf, vrf_id);

	return 0;
}

static int route_notify_owner(int command, struct zclient *zclient,
			      zebra_size_t length, vrf_id_t vrf_id)
{
	struct prefix p;
	enum zapi_route_notify_owner note;
	uint32_t table_id;
	char buf[PREFIX_STRLEN];

	prefix2str(&p, buf, sizeof(buf));

	if (!zapi_route_notify_decode(zclient->ibuf, &p, &table_id, &note))
		return -1;

	switch (note) {
	case ZAPI_ROUTE_FAIL_INSTALL:
		DEBUGD(&pbr_dbg_zebra,
		       "%s: [%s] Route install failure for table: %u",
		       __PRETTY_FUNCTION__, buf, table_id);
		break;
	case ZAPI_ROUTE_BETTER_ADMIN_WON:
		DEBUGD(&pbr_dbg_zebra,
		       "%s: [%s] Route better admin distance won for table: %u",
		       __PRETTY_FUNCTION__, buf, table_id);
		break;
	case ZAPI_ROUTE_INSTALLED:
		DEBUGD(&pbr_dbg_zebra,
		       "%s: [%s] Route installed succeeded for table: %u",
		       __PRETTY_FUNCTION__, buf, table_id);
		pbr_nht_route_installed_for_table(table_id);
		break;
	case ZAPI_ROUTE_REMOVED:
		DEBUGD(&pbr_dbg_zebra,
		       "%s: [%s] Route Removed succeeded for table: %u",
		       __PRETTY_FUNCTION__, buf, table_id);
		pbr_nht_route_removed_for_table(table_id);
		break;
	case ZAPI_ROUTE_REMOVE_FAIL:
		DEBUGD(&pbr_dbg_zebra,
		       "%s: [%s] Route remove fail for table: %u",
		       __PRETTY_FUNCTION__, buf, table_id);
		break;
	}

	return 0;
}

static int rule_notify_owner(int command, struct zclient *zclient,
			     zebra_size_t length, vrf_id_t vrf_id)
{
	uint32_t seqno, priority, unique;
	enum zapi_rule_notify_owner note;
	struct pbr_map_sequence *pbrms;
	struct pbr_map_interface *pmi;
	ifindex_t ifi;
	uint64_t installed;

	if (!zapi_rule_notify_decode(zclient->ibuf, &seqno, &priority, &unique,
				     &ifi, &note))
		return -1;

	pmi = NULL;
	pbrms = pbrms_lookup_unique(unique, ifi, &pmi);
	if (!pbrms) {
		DEBUGD(&pbr_dbg_zebra,
		       "%s: Failure to lookup pbrms based upon %u",
		       __PRETTY_FUNCTION__, unique);
		return 0;
	}

	installed = 1 << pmi->install_bit;

	switch (note) {
	case ZAPI_RULE_FAIL_INSTALL:
		DEBUGD(&pbr_dbg_zebra, "%s: Recieved RULE_FAIL_INSTALL",
		       __PRETTY_FUNCTION__);
		pbrms->installed &= ~installed;
		break;
	case ZAPI_RULE_INSTALLED:
		pbrms->installed |= installed;
		DEBUGD(&pbr_dbg_zebra, "%s: Recived RULE_INSTALLED",
		       __PRETTY_FUNCTION__);
		break;
	case ZAPI_RULE_REMOVED:
		pbrms->installed &= ~installed;
		DEBUGD(&pbr_dbg_zebra, "%s: Received RULE REMOVED",
		       __PRETTY_FUNCTION__);
		break;
	}

	return 0;
}

static void zebra_connected(struct zclient *zclient)
{
	zclient_send_reg_requests(zclient, VRF_DEFAULT);
}

static void route_add_helper(struct zapi_route *api, struct nexthop_group nhg,
			     uint8_t install_afi)
{
	struct zapi_nexthop *api_nh;
	struct nexthop *nhop;
	int i;

	api->prefix.family = install_afi;

	i = 0;
	for (ALL_NEXTHOPS(nhg, nhop)) {
		api_nh = &api->nexthops[i];
		api_nh->vrf_id = nhop->vrf_id;
		api_nh->type = nhop->type;
		switch (nhop->type) {
		case NEXTHOP_TYPE_IPV4:
			api_nh->gate.ipv4 = nhop->gate.ipv4;
			break;
		case NEXTHOP_TYPE_IPV4_IFINDEX:
			api_nh->gate.ipv4 = nhop->gate.ipv4;
			api_nh->ifindex = nhop->ifindex;
			break;
		case NEXTHOP_TYPE_IFINDEX:
			api_nh->ifindex = nhop->ifindex;
			break;
		case NEXTHOP_TYPE_IPV6:
			memcpy(&api_nh->gate.ipv6, &nhop->gate.ipv6, 16);
			break;
		case NEXTHOP_TYPE_IPV6_IFINDEX:
			api_nh->ifindex = nhop->ifindex;
			memcpy(&api_nh->gate.ipv6, &nhop->gate.ipv6, 16);
			break;
		case NEXTHOP_TYPE_BLACKHOLE:
			api_nh->bh_type = nhop->bh_type;
			break;
		}
		i++;
	}
	api->nexthop_num = i;

	zclient_route_send(ZEBRA_ROUTE_ADD, zclient, api);
}

/*
 * This function assumes a default route is being
 * installed into the appropriate tableid
 */
void route_add(struct pbr_nexthop_group_cache *pnhgc, struct nexthop_group nhg,
	       afi_t install_afi)
{
	struct zapi_route api;

	memset(&api, 0, sizeof(api));

	api.vrf_id = VRF_DEFAULT;
	api.type = ZEBRA_ROUTE_PBR;
	api.safi = SAFI_UNICAST;
	/*
	 * Sending a default route
	 */
	api.tableid = pnhgc->table_id;
	SET_FLAG(api.flags, ZEBRA_FLAG_ALLOW_RECURSION);
	SET_FLAG(api.message, ZAPI_MESSAGE_TABLEID);
	SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
	switch (install_afi) {
	case AFI_MAX:
		route_add_helper(&api, nhg, AF_INET);
		route_add_helper(&api, nhg, AF_INET6);
		break;
	case AFI_IP:
		route_add_helper(&api, nhg, AF_INET);
		break;
	case AFI_IP6:
		route_add_helper(&api, nhg, AF_INET6);
		break;
	case AFI_L2VPN:
		DEBUGD(&pbr_dbg_zebra,
		       "%s: Asked to install unsupported route type: L2VPN",
		       __PRETTY_FUNCTION__);
		break;
	}
}

/*
 * This function assumes a default route is being
 * removed from the appropriate tableid
 */
void route_delete(struct pbr_nexthop_group_cache *pnhgc, afi_t afi)
{
	struct zapi_route api;

	memset(&api, 0, sizeof(api));
	api.vrf_id = VRF_DEFAULT;
	api.type = ZEBRA_ROUTE_PBR;
	api.safi = SAFI_UNICAST;

	api.tableid = pnhgc->table_id;
	SET_FLAG(api.message, ZAPI_MESSAGE_TABLEID);

	switch (afi) {
	case AFI_IP:
		api.prefix.family = AF_INET;
		zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api);
		break;
	case AFI_IP6:
		api.prefix.family = AF_INET6;
		zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api);
		break;
	case AFI_MAX:
		api.prefix.family = AF_INET;
		zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api);
		api.prefix.family = AF_INET6;
		zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api);
		break;
	case AFI_L2VPN:
		DEBUGD(&pbr_dbg_zebra,
		       "%s: Asked to delete unsupported route type: L2VPN",
		       __PRETTY_FUNCTION__);
		break;
	}
}

static int pbr_zebra_nexthop_update(int command, struct zclient *zclient,
				    zebra_size_t length, vrf_id_t vrf_id)
{
	struct zapi_route nhr;
	char buf[PREFIX2STR_BUFFER];
	uint32_t i;

	zapi_nexthop_update_decode(zclient->ibuf, &nhr);

	if (DEBUG_MODE_CHECK(&pbr_dbg_zebra, DEBUG_MODE_ALL)) {

		DEBUGD(&pbr_dbg_zebra, "%s: Received Nexthop update: %s",
		       __PRETTY_FUNCTION__,
		       prefix2str(&nhr.prefix, buf, sizeof(buf)));

		DEBUGD(&pbr_dbg_zebra, "%s: (\tNexthops(%u)",
		       __PRETTY_FUNCTION__, nhr.nexthop_num);

		for (i = 0; i < nhr.nexthop_num; i++) {
			DEBUGD(&pbr_dbg_zebra,
			       "%s: \tType: %d: vrf: %d, ifindex: %d gate: %s",
			       __PRETTY_FUNCTION__, nhr.nexthops[i].type,
			       nhr.nexthops[i].vrf_id, nhr.nexthops[i].ifindex,
			       inet_ntoa(nhr.nexthops[i].gate.ipv4));
		}
	}

	pbr_nht_nexthop_update(&nhr);
	return 1;
}

extern struct zebra_privs_t pbr_privs;

void pbr_zebra_init(void)
{
	struct zclient_options opt = { .receive_notify = true };

	zclient = zclient_new_notify(master, &opt);

	zclient_init(zclient, ZEBRA_ROUTE_PBR, 0, &pbr_privs);
	zclient->zebra_connected = zebra_connected;
	zclient->interface_add = interface_add;
	zclient->interface_delete = interface_delete;
	zclient->interface_up = interface_state_up;
	zclient->interface_down = interface_state_down;
	zclient->interface_address_add = interface_address_add;
	zclient->interface_address_delete = interface_address_delete;
	zclient->route_notify_owner = route_notify_owner;
	zclient->rule_notify_owner = rule_notify_owner;
	zclient->nexthop_update = pbr_zebra_nexthop_update;
}

void pbr_send_rnh(struct nexthop *nhop, bool reg)
{
	uint32_t command;
	struct prefix p;

	command = (reg) ?
		ZEBRA_NEXTHOP_REGISTER : ZEBRA_NEXTHOP_UNREGISTER;

	memset(&p, 0, sizeof(p));
	switch (nhop->type) {
	case NEXTHOP_TYPE_IFINDEX:
	case NEXTHOP_TYPE_BLACKHOLE:
		return;
	case NEXTHOP_TYPE_IPV4:
	case NEXTHOP_TYPE_IPV4_IFINDEX:
		p.family = AF_INET;
		p.u.prefix4.s_addr = nhop->gate.ipv4.s_addr;
		p.prefixlen = 32;
		break;
	case NEXTHOP_TYPE_IPV6:
	case NEXTHOP_TYPE_IPV6_IFINDEX:
		p.family = AF_INET6;
		memcpy(&p.u.prefix6, &nhop->gate.ipv6, 16);
		p.prefixlen = 128;
		break;
	}

	if (zclient_send_rnh(zclient, command, &p,
			     false, nhop->vrf_id) < 0) {
		zlog_warn("%s: Failure to send nexthop to zebra",
			  __PRETTY_FUNCTION__);
	}
}

static void pbr_encode_pbr_map_sequence_prefix(struct stream *s,
					       struct prefix *p,
					       unsigned char  family)
{
	struct prefix any;

	if (!p) {
		memset(&any, 0, sizeof(any));
		any.family = family;
		p = &any;
	}

	stream_putc(s, p->family);
	stream_putc(s, p->prefixlen);
	stream_put(s, &p->u.prefix, prefix_blen(p));
}

static void pbr_encode_pbr_map_sequence(struct stream *s,
					struct pbr_map_sequence *pbrms,
					struct interface *ifp)
{
	unsigned char family;

	family = AF_INET;
	if (pbrms->family)
		family = pbrms->family;

	stream_putl(s, pbrms->seqno);
	stream_putl(s, pbrms->ruleno);
	stream_putl(s, pbrms->unique);
	pbr_encode_pbr_map_sequence_prefix(s, pbrms->src, family);
	stream_putw(s, 0);  /* src port */
	pbr_encode_pbr_map_sequence_prefix(s, pbrms->dst, family);
	stream_putw(s, 0);  /* dst port */
	if (pbrms->nhgrp_name)
		stream_putl(s, pbr_nht_get_table(pbrms->nhgrp_name));
	else if (pbrms->nhg)
		stream_putl(s, pbr_nht_get_table(pbrms->internal_nhg_name));
	stream_putl(s, ifp->ifindex);
}

void pbr_send_pbr_map(struct pbr_map_sequence *pbrms,
		      struct pbr_map_interface *pmi, bool install)
{
	struct pbr_map *pbrm = pbrms->parent;
	struct stream *s;
	uint64_t is_installed = (uint64_t)1 << pmi->install_bit;

	is_installed &= pbrms->installed;

	DEBUGD(&pbr_dbg_zebra, "%s: for %s %d(%" PRIu64 ")",
	       __PRETTY_FUNCTION__, pbrm->name, install, is_installed);

	/*
	 * If we are installed and asked to do so again
	 * just return.  If we are not installed and asked
	 * and asked to delete just return;
	 */
	if (install && is_installed)
		return;

	if (!install && !is_installed)
		return;

	s = zclient->obuf;
	stream_reset(s);

	zclient_create_header(s,
			      install ? ZEBRA_RULE_ADD : ZEBRA_RULE_DELETE,
			      VRF_DEFAULT);

	/*
	 * We are sending one item at a time at the moment
	 */
	stream_putl(s, 1);

	DEBUGD(&pbr_dbg_zebra, "%s: \t%s %s %d %s %u",
	       __PRETTY_FUNCTION__, install ? "Installing" : "Deleting",
	       pbrm->name, install, pmi->ifp->name, pmi->delete);

	pbr_encode_pbr_map_sequence(s, pbrms, pmi->ifp);

	stream_putw_at(s, 0, stream_get_endp(s));

	zclient_send_message(zclient);
}
Commit	Line	Data
e5c83d9b DS	1	/*
	2	* Zebra connect code.
	3	* Copyright (C) 2018 Cumulus Networks, Inc.
	4	* Donald Sharp
	5	*
	6	* FRR 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
	8	* Free Software Foundation; either version 2, or (at your option) any
	9	* later version.
	10	*
	11	* FRR is distributed in the hope that it will be useful, but
	12	* WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* General Public License for 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
	22	#include "thread.h"
	23	#include "command.h"
	24	#include "network.h"
	25	#include "prefix.h"
	26	#include "routemap.h"
	27	#include "table.h"
	28	#include "stream.h"
	29	#include "memory.h"
	30	#include "zclient.h"
	31	#include "filter.h"
	32	#include "plist.h"
	33	#include "log.h"
	34	#include "nexthop.h"
	35	#include "nexthop_group.h"
	36
	37	#include "pbr_nht.h"
	38	#include "pbr_map.h"
	39	#include "pbr_memory.h"
	40	#include "pbr_zebra.h"
	41	#include "pbr_debug.h"
	42
	43	DEFINE_MTYPE_STATIC(PBRD, PBR_INTERFACE, "PBR Interface")
	44
	45	/* Zebra structure to hold current status. */
d3765386	46	struct zclient *zclient;
e5c83d9b	47
b13e5ad6	48	struct pbr_interface pbr_if_new(struct interface ifp)
e5c83d9b DS	49	{
	50	struct pbr_interface *pbr_ifp;
	51
	52	zassert(ifp);
	53	zassert(!ifp->info);
	54
	55	pbr_ifp = XCALLOC(MTYPE_PBR_INTERFACE, sizeof(*pbr_ifp));
	56
	57	if (!pbr_ifp) {
	58	zlog_err("%s: PBR XCALLOC(%zu) failure", __PRETTY_FUNCTION__,
	59	sizeof(*pbr_ifp));
	60	return 0;
	61	}
	62
10a00758 DS	63	ifp->info = pbr_ifp;
10a00758 DS	64	return pbr_ifp;
e5c83d9b DS	65	}
	66
	67	/* Inteface addition message from zebra. */
	68	static int interface_add(int command, struct zclient *zclient,
	69	zebra_size_t length, vrf_id_t vrf_id)
	70	{
	71	struct interface *ifp;
	72
	73	ifp = zebra_interface_add_read(zclient->ibuf, vrf_id);
	74
	75	if (!ifp)
	76	return 0;
	77
10a00758 DS	78	if (!ifp->info)
10a00758 DS	79	pbr_if_new(ifp);
e5c83d9b DS	80
	81	return 0;
	82	}
	83
	84	static int interface_delete(int command, struct zclient *zclient,
	85	zebra_size_t length, vrf_id_t vrf_id)
	86	{
	87	struct interface *ifp;
	88	struct stream *s;
	89
	90	s = zclient->ibuf;
	91	/* zebra_interface_state_read () updates interface structure in iflist
	92	*/
	93	ifp = zebra_interface_state_read(s, vrf_id);
	94
	95	if (ifp == NULL)
	96	return 0;
	97
	98	if_set_index(ifp, IFINDEX_INTERNAL);
	99
	100	return 0;
	101	}
	102
	103	static int interface_address_add(int command, struct zclient *zclient,
	104	zebra_size_t length, vrf_id_t vrf_id)
	105	{
	106	zebra_interface_address_read(command, zclient->ibuf, vrf_id);
	107
	108	return 0;
	109	}
	110
	111	static int interface_address_delete(int command, struct zclient *zclient,
	112	zebra_size_t length, vrf_id_t vrf_id)
	113	{
	114	struct connected *c;
	115
	116	c = zebra_interface_address_read(command, zclient->ibuf, vrf_id);
	117
	118	if (!c)
	119	return 0;
	120
	121	connected_free(c);
	122	return 0;
	123	}
	124
	125	static int interface_state_up(int command, struct zclient *zclient,
	126	zebra_size_t length, vrf_id_t vrf_id)
	127	{
	128
d7b3ad40	129	zebra_interface_state_read(zclient->ibuf, vrf_id);
e5c83d9b DS	130
	131	return 0;
	132	}
	133
	134	static int interface_state_down(int command, struct zclient *zclient,
	135	zebra_size_t length, vrf_id_t vrf_id)
	136	{
	137
	138	zebra_interface_state_read(zclient->ibuf, vrf_id);
	139
	140	return 0;
	141	}
	142
	143	static int route_notify_owner(int command, struct zclient *zclient,
	144	zebra_size_t length, vrf_id_t vrf_id)
	145	{
	146	struct prefix p;
	147	enum zapi_route_notify_owner note;
	148	uint32_t table_id;
	149	char buf[PREFIX_STRLEN];
	150
	151	prefix2str(&p, buf, sizeof(buf));
	152
	153	if (!zapi_route_notify_decode(zclient->ibuf, &p, &table_id, &note))
	154	return -1;
	155
	156	switch (note) {
	157	case ZAPI_ROUTE_FAIL_INSTALL:
	158	DEBUGD(&pbr_dbg_zebra,
	159	"%s: [%s] Route install failure for table: %u",
	160	__PRETTY_FUNCTION__, buf, table_id);
	161	break;
	162	case ZAPI_ROUTE_BETTER_ADMIN_WON:
	163	DEBUGD(&pbr_dbg_zebra,
	164	"%s: [%s] Route better admin distance won for table: %u",
	165	__PRETTY_FUNCTION__, buf, table_id);
	166	break;
	167	case ZAPI_ROUTE_INSTALLED:
	168	DEBUGD(&pbr_dbg_zebra,
	169	"%s: [%s] Route installed succeeded for table: %u",
	170	__PRETTY_FUNCTION__, buf, table_id);
	171	pbr_nht_route_installed_for_table(table_id);
	172	break;
	173	case ZAPI_ROUTE_REMOVED:
	174	DEBUGD(&pbr_dbg_zebra,
	175	"%s: [%s] Route Removed succeeded for table: %u",
	176	__PRETTY_FUNCTION__, buf, table_id);
	177	pbr_nht_route_removed_for_table(table_id);
	178	break;
	179	case ZAPI_ROUTE_REMOVE_FAIL:
	180	DEBUGD(&pbr_dbg_zebra,
	181	"%s: [%s] Route remove fail for table: %u",
	182	__PRETTY_FUNCTION__, buf, table_id);
	183	break;
	184	}
	185
	186	return 0;
	187	}
	188
	189	static int rule_notify_owner(int command, struct zclient *zclient,
	190	zebra_size_t length, vrf_id_t vrf_id)
	191	{
	192	uint32_t seqno, priority, unique;
	193	enum zapi_rule_notify_owner note;
194	struct pbr_map_sequence *pbrms;
37c606ff	195	struct pbr_map_interface *pmi;
e5c83d9b	196	ifindex_t ifi;
37c606ff	197	uint64_t installed;
e5c83d9b DS	198
	199	if (!zapi_rule_notify_decode(zclient->ibuf, &seqno, &priority, &unique,
	200	&ifi, &note))
	201	return -1;
	202
37c606ff DS	203	pmi = NULL;
37c606ff DS	204	pbrms = pbrms_lookup_unique(unique, ifi, &pmi);
e5c83d9b DS	205	if (!pbrms) {
	206	DEBUGD(&pbr_dbg_zebra,
	207	"%s: Failure to lookup pbrms based upon %u",
	208	__PRETTY_FUNCTION__, unique);
	209	return 0;
	210	}
	211
37c606ff DS	212	installed = 1 << pmi->install_bit;
37c606ff DS	213
e5c83d9b DS	214	switch (note) {
	215	case ZAPI_RULE_FAIL_INSTALL:
	216	DEBUGD(&pbr_dbg_zebra, "%s: Recieved RULE_FAIL_INSTALL",
	217	__PRETTY_FUNCTION__);
37c606ff	218	pbrms->installed &= ~installed;
e5c83d9b DS	219	break;
e5c83d9b DS	220	case ZAPI_RULE_INSTALLED:
37c606ff	221	pbrms->installed \|= installed;
e5c83d9b DS	222	DEBUGD(&pbr_dbg_zebra, "%s: Recived RULE_INSTALLED",
	223	__PRETTY_FUNCTION__);
	224	break;
	225	case ZAPI_RULE_REMOVED:
0f03639d	226	pbrms->installed &= ~installed;
e5c83d9b DS	227	DEBUGD(&pbr_dbg_zebra, "%s: Received RULE REMOVED",
	228	__PRETTY_FUNCTION__);
	229	break;
	230	}
	231
	232	return 0;
	233	}
	234
	235	static void zebra_connected(struct zclient *zclient)
	236	{
	237	zclient_send_reg_requests(zclient, VRF_DEFAULT);
	238	}
	239
	240	static void route_add_helper(struct zapi_route *api, struct nexthop_group nhg,
	241	uint8_t install_afi)
	242	{
	243	struct zapi_nexthop *api_nh;
	244	struct nexthop *nhop;
	245	int i;
	246
	247	api->prefix.family = install_afi;
	248
	249	i = 0;
	250	for (ALL_NEXTHOPS(nhg, nhop)) {
	251	api_nh = &api->nexthops[i];
	252	api_nh->vrf_id = nhop->vrf_id;
	253	api_nh->type = nhop->type;
	254	switch (nhop->type) {
	255	case NEXTHOP_TYPE_IPV4:
	256	api_nh->gate.ipv4 = nhop->gate.ipv4;
	257	break;
	258	case NEXTHOP_TYPE_IPV4_IFINDEX:
	259	api_nh->gate.ipv4 = nhop->gate.ipv4;
	260	api_nh->ifindex = nhop->ifindex;
	261	break;
	262	case NEXTHOP_TYPE_IFINDEX:
	263	api_nh->ifindex = nhop->ifindex;
	264	break;
	265	case NEXTHOP_TYPE_IPV6:
	266	memcpy(&api_nh->gate.ipv6, &nhop->gate.ipv6, 16);
	267	break;
	268	case NEXTHOP_TYPE_IPV6_IFINDEX:
	269	api_nh->ifindex = nhop->ifindex;
	270	memcpy(&api_nh->gate.ipv6, &nhop->gate.ipv6, 16);
	271	break;
	272	case NEXTHOP_TYPE_BLACKHOLE:
	273	api_nh->bh_type = nhop->bh_type;
	274	break;
	275	}
	276	i++;
	277	}
	278	api->nexthop_num = i;
	279
	280	zclient_route_send(ZEBRA_ROUTE_ADD, zclient, api);
	281	}
	282
	283	/*
	284	* This function assumes a default route is being
	285	* installed into the appropriate tableid
	286	*/
	287	void route_add(struct pbr_nexthop_group_cache *pnhgc, struct nexthop_group nhg,
	288	afi_t install_afi)
	289	{
	290	struct zapi_route api;
291
292	memset(&api, 0, sizeof(api));
293
294	api.vrf_id = VRF_DEFAULT;
295	api.type = ZEBRA_ROUTE_PBR;
296	api.safi = SAFI_UNICAST;
297	/*
298	* Sending a default route
299	*/
300	api.tableid = pnhgc->table_id;
301	SET_FLAG(api.flags, ZEBRA_FLAG_ALLOW_RECURSION);
302	SET_FLAG(api.message, ZAPI_MESSAGE_TABLEID);
303	SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
304	switch (install_afi) {
305	case AFI_MAX:
306	route_add_helper(&api, nhg, AF_INET);
307	route_add_helper(&api, nhg, AF_INET6);
308	break;
309	case AFI_IP:
310	route_add_helper(&api, nhg, AF_INET);
311	break;
312	case AFI_IP6:
313	route_add_helper(&api, nhg, AF_INET6);
314	break;
315	case AFI_L2VPN:
316	DEBUGD(&pbr_dbg_zebra,
317	"%s: Asked to install unsupported route type: L2VPN",
318	__PRETTY_FUNCTION__);
319	break;
320	}
321	}
322
323	/*
324	* This function assumes a default route is being
325	* removed from the appropriate tableid
326	*/
327	void route_delete(struct pbr_nexthop_group_cache *pnhgc, afi_t afi)
328	{
329	struct zapi_route api;
330
331	memset(&api, 0, sizeof(api));
332	api.vrf_id = VRF_DEFAULT;
333	api.type = ZEBRA_ROUTE_PBR;
334	api.safi = SAFI_UNICAST;
335
336	api.tableid = pnhgc->table_id;
337	SET_FLAG(api.message, ZAPI_MESSAGE_TABLEID);
338
339	switch (afi) {
340	case AFI_IP:
341	api.prefix.family = AF_INET;
342	zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api);
343	break;
344	case AFI_IP6:
345	api.prefix.family = AF_INET6;
346	zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api);
347	break;
348	case AFI_MAX:
349	api.prefix.family = AF_INET;
350	zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api);
351	api.prefix.family = AF_INET6;
352	zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api);
353	break;
354	case AFI_L2VPN:
355	DEBUGD(&pbr_dbg_zebra,
356	"%s: Asked to delete unsupported route type: L2VPN",
357	__PRETTY_FUNCTION__);
358	break;
359	}
e5c83d9b DS	360	}
	361
	362	static int pbr_zebra_nexthop_update(int command, struct zclient *zclient,
	363	zebra_size_t length, vrf_id_t vrf_id)
	364	{
	365	struct zapi_route nhr;
	366	char buf[PREFIX2STR_BUFFER];
	367	uint32_t i;
	368
	369	zapi_nexthop_update_decode(zclient->ibuf, &nhr);
	370
	371	if (DEBUG_MODE_CHECK(&pbr_dbg_zebra, DEBUG_MODE_ALL)) {
	372
	373	DEBUGD(&pbr_dbg_zebra, "%s: Received Nexthop update: %s",
	374	__PRETTY_FUNCTION__,
	375	prefix2str(&nhr.prefix, buf, sizeof(buf)));
	376
	377	DEBUGD(&pbr_dbg_zebra, "%s: (\tNexthops(%u)",
	378	__PRETTY_FUNCTION__, nhr.nexthop_num);
	379
	380	for (i = 0; i < nhr.nexthop_num; i++) {
	381	DEBUGD(&pbr_dbg_zebra,
	382	"%s: \tType: %d: vrf: %d, ifindex: %d gate: %s",
	383	__PRETTY_FUNCTION__, nhr.nexthops[i].type,
	384	nhr.nexthops[i].vrf_id, nhr.nexthops[i].ifindex,
	385	inet_ntoa(nhr.nexthops[i].gate.ipv4));
	386	}
	387	}
	388
	389	pbr_nht_nexthop_update(&nhr);
	390	return 1;
	391	}
	392
	393	extern struct zebra_privs_t pbr_privs;
	394
	395	void pbr_zebra_init(void)
	396	{
	397	struct zclient_options opt = { .receive_notify = true };
	398
	399	zclient = zclient_new_notify(master, &opt);
	400
	401	zclient_init(zclient, ZEBRA_ROUTE_PBR, 0, &pbr_privs);
	402	zclient->zebra_connected = zebra_connected;
	403	zclient->interface_add = interface_add;
	404	zclient->interface_delete = interface_delete;
	405	zclient->interface_up = interface_state_up;
	406	zclient->interface_down = interface_state_down;
	407	zclient->interface_address_add = interface_address_add;
	408	zclient->interface_address_delete = interface_address_delete;
	409	zclient->route_notify_owner = route_notify_owner;
	410	zclient->rule_notify_owner = rule_notify_owner;
	411	zclient->nexthop_update = pbr_zebra_nexthop_update;
	412	}
	413
	414	void pbr_send_rnh(struct nexthop *nhop, bool reg)
	415	{
	416	uint32_t command;
	417	struct prefix p;
	418
	419	command = (reg) ?
	420	ZEBRA_NEXTHOP_REGISTER : ZEBRA_NEXTHOP_UNREGISTER;
	421
	422	memset(&p, 0, sizeof(p));
d3765386	423	switch (nhop->type) {
e5c83d9b DS	424	case NEXTHOP_TYPE_IFINDEX:
	425	case NEXTHOP_TYPE_BLACKHOLE:
	426	return;
	427	case NEXTHOP_TYPE_IPV4:
	428	case NEXTHOP_TYPE_IPV4_IFINDEX:
	429	p.family = AF_INET;
	430	p.u.prefix4.s_addr = nhop->gate.ipv4.s_addr;
	431	p.prefixlen = 32;
	432	break;
	433	case NEXTHOP_TYPE_IPV6:
	434	case NEXTHOP_TYPE_IPV6_IFINDEX:
	435	p.family = AF_INET6;
	436	memcpy(&p.u.prefix6, &nhop->gate.ipv6, 16);
	437	p.prefixlen = 128;
	438	break;
	439	}
	440
	441	if (zclient_send_rnh(zclient, command, &p,
	442	false, nhop->vrf_id) < 0) {
	443	zlog_warn("%s: Failure to send nexthop to zebra",
	444	__PRETTY_FUNCTION__);
	445	}
	446	}
	447
	448	static void pbr_encode_pbr_map_sequence_prefix(struct stream *s,
	449	struct prefix *p,
49027ce8	450	unsigned char family)
e5c83d9b DS	451	{
	452	struct prefix any;
	453
	454	if (!p) {
	455	memset(&any, 0, sizeof(any));
	456	any.family = family;
	457	p = &any;
	458	}
	459
	460	stream_putc(s, p->family);
	461	stream_putc(s, p->prefixlen);
	462	stream_put(s, &p->u.prefix, prefix_blen(p));
	463	}
	464
	465	static void pbr_encode_pbr_map_sequence(struct stream *s,
	466	struct pbr_map_sequence *pbrms,
	467	struct interface *ifp)
	468	{
49027ce8	469	unsigned char family;
e5c83d9b DS	470
e5c83d9b DS	471	family = AF_INET;
49027ce8 DS	472	if (pbrms->family)
49027ce8 DS	473	family = pbrms->family;
e5c83d9b DS	474
	475	stream_putl(s, pbrms->seqno);
	476	stream_putl(s, pbrms->ruleno);
	477	stream_putl(s, pbrms->unique);
	478	pbr_encode_pbr_map_sequence_prefix(s, pbrms->src, family);
	479	stream_putw(s, 0); /* src port */
	480	pbr_encode_pbr_map_sequence_prefix(s, pbrms->dst, family);
	481	stream_putw(s, 0); /* dst port */
	482	if (pbrms->nhgrp_name)
	483	stream_putl(s, pbr_nht_get_table(pbrms->nhgrp_name));
	484	else if (pbrms->nhg)
	485	stream_putl(s, pbr_nht_get_table(pbrms->internal_nhg_name));
	486	stream_putl(s, ifp->ifindex);
	487	}
	488
b13e5ad6 DS	489	void pbr_send_pbr_map(struct pbr_map_sequence *pbrms,
b13e5ad6 DS	490	struct pbr_map_interface *pmi, bool install)
e5c83d9b	491	{
b13e5ad6	492	struct pbr_map *pbrm = pbrms->parent;
e5c83d9b	493	struct stream *s;
10a00758	494	uint64_t is_installed = (uint64_t)1 << pmi->install_bit;
37c606ff DS	495
37c606ff DS	496	is_installed &= pbrms->installed;
e5c83d9b	497
37c606ff DS	498	DEBUGD(&pbr_dbg_zebra, "%s: for %s %d(%" PRIu64 ")",
37c606ff DS	499	__PRETTY_FUNCTION__, pbrm->name, install, is_installed);
9b71ea4b DS	500
	501	/*
	502	* If we are installed and asked to do so again
	503	* just return. If we are not installed and asked
	504	* and asked to delete just return;
	505	*/
37c606ff	506	if (install && is_installed)
9b71ea4b DS	507	return;
9b71ea4b DS	508
37c606ff	509	if (!install && !is_installed)
9b71ea4b	510	return;
e5c83d9b DS	511
	512	s = zclient->obuf;
	513	stream_reset(s);
	514
	515	zclient_create_header(s,
	516	install ? ZEBRA_RULE_ADD : ZEBRA_RULE_DELETE,
	517	VRF_DEFAULT);
	518
b13e5ad6 DS	519	/*
	520	* We are sending one item at a time at the moment
	521	*/
	522	stream_putl(s, 1);
e5c83d9b	523
b13e5ad6 DS	524	DEBUGD(&pbr_dbg_zebra, "%s: \t%s %s %d %s %u",
	525	__PRETTY_FUNCTION__, install ? "Installing" : "Deleting",
	526	pbrm->name, install, pmi->ifp->name, pmi->delete);
e5c83d9b	527
b13e5ad6	528	pbr_encode_pbr_map_sequence(s, pbrms, pmi->ifp);
e5c83d9b	529
e5c83d9b DS	530	stream_putw_at(s, 0, stream_get_endp(s));
e5c83d9b DS	531
e5c83d9b DS	532	zclient_send_message(zclient);
e5c83d9b DS	533	}