diff options
Diffstat (limited to 'zebra/zapi_msg.c')
| -rw-r--r-- | zebra/zapi_msg.c | 2947 |
1 files changed, 2947 insertions, 0 deletions
diff --git a/zebra/zapi_msg.c b/zebra/zapi_msg.c new file mode 100644 index 0000000000..2c22dff84b --- /dev/null +++ b/zebra/zapi_msg.c @@ -0,0 +1,2947 @@ +/* + * Zebra API server. + * Portions: + * Copyright (C) 1997-1999 Kunihiro Ishiguro + * Copyright (C) 2015-2018 Cumulus Networks, Inc. + * et al. + * + * 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 <libgen.h> + +#include "lib/prefix.h" +#include "lib/command.h" +#include "lib/if.h" +#include "lib/thread.h" +#include "lib/stream.h" +#include "lib/memory.h" +#include "lib/table.h" +#include "lib/network.h" +#include "lib/sockunion.h" +#include "lib/log.h" +#include "lib/zclient.h" +#include "lib/privs.h" +#include "lib/network.h" +#include "lib/buffer.h" +#include "lib/nexthop.h" +#include "lib/vrf.h" +#include "lib/libfrr.h" +#include "lib/sockopt.h" + +#include "zebra/rib.h" +#include "zebra/zebra_memory.h" +#include "zebra/zebra_ns.h" +#include "zebra/zebra_vrf.h" +#include "zebra/router-id.h" +#include "zebra/redistribute.h" +#include "zebra/debug.h" +#include "zebra/zebra_rnh.h" +#include "zebra/rt_netlink.h" +#include "zebra/interface.h" +#include "zebra/zebra_ptm.h" +#include "zebra/rtadv.h" +#include "zebra/zebra_mpls.h" +#include "zebra/zebra_mroute.h" +#include "zebra/label_manager.h" +#include "zebra/zebra_vxlan.h" +#include "zebra/rt.h" +#include "zebra/zebra_pbr.h" +#include "zebra/table_manager.h" +#include "zebra/zapi_msg.h" + +/* Encoding helpers -------------------------------------------------------- */ + +static void zserv_encode_interface(struct stream *s, struct interface *ifp) +{ + /* Interface information. */ + stream_put(s, ifp->name, INTERFACE_NAMSIZ); + stream_putl(s, ifp->ifindex); + stream_putc(s, ifp->status); + stream_putq(s, ifp->flags); + stream_putc(s, ifp->ptm_enable); + stream_putc(s, ifp->ptm_status); + stream_putl(s, ifp->metric); + stream_putl(s, ifp->speed); + stream_putl(s, ifp->mtu); + stream_putl(s, ifp->mtu6); + stream_putl(s, ifp->bandwidth); + stream_putl(s, ifp->ll_type); + stream_putl(s, ifp->hw_addr_len); + if (ifp->hw_addr_len) + stream_put(s, ifp->hw_addr, ifp->hw_addr_len); + + /* Then, Traffic Engineering parameters if any */ + if (HAS_LINK_PARAMS(ifp) && IS_LINK_PARAMS_SET(ifp->link_params)) { + stream_putc(s, 1); + zebra_interface_link_params_write(s, ifp); + } else + stream_putc(s, 0); + + /* Write packet size. */ + stream_putw_at(s, 0, stream_get_endp(s)); +} + +static void zserv_encode_vrf(struct stream *s, struct zebra_vrf *zvrf) +{ + struct vrf_data data; + const char *netns_name = zvrf_ns_name(zvrf); + + data.l.table_id = zvrf->table_id; + + if (netns_name) + strlcpy(data.l.netns_name, basename((char *)netns_name), + NS_NAMSIZ); + else + memset(data.l.netns_name, 0, NS_NAMSIZ); + /* Pass the tableid and the netns NAME */ + stream_put(s, &data, sizeof(struct vrf_data)); + /* Interface information. */ + stream_put(s, zvrf_name(zvrf), VRF_NAMSIZ); + /* Write packet size. */ + stream_putw_at(s, 0, stream_get_endp(s)); +} + +static int zserv_encode_nexthop(struct stream *s, struct nexthop *nexthop) +{ + stream_putc(s, nexthop->type); + switch (nexthop->type) { + case NEXTHOP_TYPE_IPV4: + case NEXTHOP_TYPE_IPV4_IFINDEX: + stream_put_in_addr(s, &nexthop->gate.ipv4); + stream_putl(s, nexthop->ifindex); + break; + case NEXTHOP_TYPE_IPV6: + stream_put(s, &nexthop->gate.ipv6, 16); + break; + case NEXTHOP_TYPE_IPV6_IFINDEX: + stream_put(s, &nexthop->gate.ipv6, 16); + stream_putl(s, nexthop->ifindex); + break; + case NEXTHOP_TYPE_IFINDEX: + stream_putl(s, nexthop->ifindex); + break; + default: + /* do nothing */ + break; + } + return 1; +} + +/* Send handlers ----------------------------------------------------------- */ + +/* Interface is added. Send ZEBRA_INTERFACE_ADD to client. */ +/* + * This function is called in the following situations: + * - in response to a 3-byte ZEBRA_INTERFACE_ADD request + * from the client. + * - at startup, when zebra figures out the available interfaces + * - when an interface is added (where support for + * RTM_IFANNOUNCE or AF_NETLINK sockets is available), or when + * an interface is marked IFF_UP (i.e., an RTM_IFINFO message is + * received) + */ +int zsend_interface_add(struct zserv *client, struct interface *ifp) +{ + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, ZEBRA_INTERFACE_ADD, ifp->vrf_id); + zserv_encode_interface(s, ifp); + + client->ifadd_cnt++; + return zebra_server_send_message(client, s); +} + +/* Interface deletion from zebra daemon. */ +int zsend_interface_delete(struct zserv *client, struct interface *ifp) +{ + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, ZEBRA_INTERFACE_DELETE, ifp->vrf_id); + zserv_encode_interface(s, ifp); + + client->ifdel_cnt++; + return zebra_server_send_message(client, s); +} + +int zsend_vrf_add(struct zserv *client, struct zebra_vrf *zvrf) +{ + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, ZEBRA_VRF_ADD, zvrf_id(zvrf)); + zserv_encode_vrf(s, zvrf); + + client->vrfadd_cnt++; + return zebra_server_send_message(client, s); +} + +/* VRF deletion from zebra daemon. */ +int zsend_vrf_delete(struct zserv *client, struct zebra_vrf *zvrf) + +{ + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, ZEBRA_VRF_DELETE, zvrf_id(zvrf)); + zserv_encode_vrf(s, zvrf); + + client->vrfdel_cnt++; + return zebra_server_send_message(client, s); +} + +int zsend_interface_link_params(struct zserv *client, struct interface *ifp) +{ + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + /* Check this client need interface information. */ + if (!client->ifinfo) { + stream_free(s); + return 0; + } + + if (!ifp->link_params) { + stream_free(s); + return 0; + } + + zclient_create_header(s, ZEBRA_INTERFACE_LINK_PARAMS, ifp->vrf_id); + + /* Add Interface Index */ + stream_putl(s, ifp->ifindex); + + /* Then TE Link Parameters */ + if (zebra_interface_link_params_write(s, ifp) == 0) { + stream_free(s); + return 0; + } + + /* Write packet size. */ + stream_putw_at(s, 0, stream_get_endp(s)); + + return zebra_server_send_message(client, s); +} + +/* Interface address is added/deleted. Send ZEBRA_INTERFACE_ADDRESS_ADD or + * ZEBRA_INTERFACE_ADDRESS_DELETE to the client. + * + * A ZEBRA_INTERFACE_ADDRESS_ADD is sent in the following situations: + * - in response to a 3-byte ZEBRA_INTERFACE_ADD request + * from the client, after the ZEBRA_INTERFACE_ADD has been + * sent from zebra to the client + * - redistribute new address info to all clients in the following situations + * - at startup, when zebra figures out the available interfaces + * - when an interface is added (where support for + * RTM_IFANNOUNCE or AF_NETLINK sockets is available), or when + * an interface is marked IFF_UP (i.e., an RTM_IFINFO message is + * received) + * - for the vty commands "ip address A.B.C.D/M [<secondary>|<label LINE>]" + * and "no bandwidth <1-10000000>", "ipv6 address X:X::X:X/M" + * - when an RTM_NEWADDR message is received from the kernel, + * + * The call tree that triggers ZEBRA_INTERFACE_ADDRESS_DELETE: + * + * zsend_interface_address(DELETE) + * ^ + * | + * zebra_interface_address_delete_update + * ^ ^ ^ + * | | if_delete_update + * | | + * ip_address_uninstall connected_delete_ipv4 + * [ipv6_addresss_uninstall] [connected_delete_ipv6] + * ^ ^ + * | | + * | RTM_NEWADDR on routing/netlink socket + * | + * vty commands: + * "no ip address A.B.C.D/M [label LINE]" + * "no ip address A.B.C.D/M secondary" + * ["no ipv6 address X:X::X:X/M"] + * + */ +int zsend_interface_address(int cmd, struct zserv *client, + struct interface *ifp, struct connected *ifc) +{ + int blen; + struct prefix *p; + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, cmd, ifp->vrf_id); + stream_putl(s, ifp->ifindex); + + /* Interface address flag. */ + stream_putc(s, ifc->flags); + + /* Prefix information. */ + p = ifc->address; + stream_putc(s, p->family); + blen = prefix_blen(p); + stream_put(s, &p->u.prefix, blen); + + /* + * XXX gnu version does not send prefixlen for + * ZEBRA_INTERFACE_ADDRESS_DELETE + * but zebra_interface_address_delete_read() in the gnu version + * expects to find it + */ + stream_putc(s, p->prefixlen); + + /* Destination. */ + p = ifc->destination; + if (p) + stream_put(s, &p->u.prefix, blen); + else + stream_put(s, NULL, blen); + + /* Write packet size. */ + stream_putw_at(s, 0, stream_get_endp(s)); + + client->connected_rt_add_cnt++; + return zebra_server_send_message(client, s); +} + +static int zsend_interface_nbr_address(int cmd, struct zserv *client, + struct interface *ifp, + struct nbr_connected *ifc) +{ + int blen; + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + struct prefix *p; + + zclient_create_header(s, cmd, ifp->vrf_id); + stream_putl(s, ifp->ifindex); + + /* Prefix information. */ + p = ifc->address; + stream_putc(s, p->family); + blen = prefix_blen(p); + stream_put(s, &p->u.prefix, blen); + + /* + * XXX gnu version does not send prefixlen for + * ZEBRA_INTERFACE_ADDRESS_DELETE + * but zebra_interface_address_delete_read() in the gnu version + * expects to find it + */ + stream_putc(s, p->prefixlen); + + /* Write packet size. */ + stream_putw_at(s, 0, stream_get_endp(s)); + + return zebra_server_send_message(client, s); +} + +/* Interface address addition. */ +static void zebra_interface_nbr_address_add_update(struct interface *ifp, + struct nbr_connected *ifc) +{ + struct listnode *node, *nnode; + struct zserv *client; + struct prefix *p; + + if (IS_ZEBRA_DEBUG_EVENT) { + char buf[INET6_ADDRSTRLEN]; + + p = ifc->address; + zlog_debug( + "MESSAGE: ZEBRA_INTERFACE_NBR_ADDRESS_ADD %s/%d on %s", + inet_ntop(p->family, &p->u.prefix, buf, + INET6_ADDRSTRLEN), + p->prefixlen, ifc->ifp->name); + } + + for (ALL_LIST_ELEMENTS(zebrad.client_list, node, nnode, client)) + zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_ADD, + client, ifp, ifc); +} + +/* Interface address deletion. */ +static void zebra_interface_nbr_address_delete_update(struct interface *ifp, + struct nbr_connected *ifc) +{ + struct listnode *node, *nnode; + struct zserv *client; + struct prefix *p; + + if (IS_ZEBRA_DEBUG_EVENT) { + char buf[INET6_ADDRSTRLEN]; + + p = ifc->address; + zlog_debug( + "MESSAGE: ZEBRA_INTERFACE_NBR_ADDRESS_DELETE %s/%d on %s", + inet_ntop(p->family, &p->u.prefix, buf, + INET6_ADDRSTRLEN), + p->prefixlen, ifc->ifp->name); + } + + for (ALL_LIST_ELEMENTS(zebrad.client_list, node, nnode, client)) + zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_DELETE, + client, ifp, ifc); +} + +/* Send addresses on interface to client */ +int zsend_interface_addresses(struct zserv *client, struct interface *ifp) +{ + struct listnode *cnode, *cnnode; + struct connected *c; + struct nbr_connected *nc; + + /* Send interface addresses. */ + for (ALL_LIST_ELEMENTS(ifp->connected, cnode, cnnode, c)) { + if (!CHECK_FLAG(c->conf, ZEBRA_IFC_REAL)) + continue; + + if (zsend_interface_address(ZEBRA_INTERFACE_ADDRESS_ADD, client, + ifp, c) + < 0) + return -1; + } + + /* Send interface neighbors. */ + for (ALL_LIST_ELEMENTS(ifp->nbr_connected, cnode, cnnode, nc)) { + if (zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_ADD, + client, ifp, nc) + < 0) + return -1; + } + + return 0; +} + +/* Notify client about interface moving from one VRF to another. + * Whether client is interested in old and new VRF is checked by caller. + */ +int zsend_interface_vrf_update(struct zserv *client, struct interface *ifp, + vrf_id_t vrf_id) +{ + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, ZEBRA_INTERFACE_VRF_UPDATE, ifp->vrf_id); + + /* Fill in the ifIndex of the interface and its new VRF (id) */ + stream_putl(s, ifp->ifindex); + stream_putl(s, vrf_id); + + /* Write packet size. */ + stream_putw_at(s, 0, stream_get_endp(s)); + + client->if_vrfchg_cnt++; + return zebra_server_send_message(client, s); +} + +/* Add new nbr connected IPv6 address */ +void nbr_connected_add_ipv6(struct interface *ifp, struct in6_addr *address) +{ + struct nbr_connected *ifc; + struct prefix p; + + p.family = AF_INET6; + IPV6_ADDR_COPY(&p.u.prefix, address); + p.prefixlen = IPV6_MAX_PREFIXLEN; + + if (!(ifc = listnode_head(ifp->nbr_connected))) { + /* new addition */ + ifc = nbr_connected_new(); + ifc->address = prefix_new(); + ifc->ifp = ifp; + listnode_add(ifp->nbr_connected, ifc); + } + + prefix_copy(ifc->address, &p); + + zebra_interface_nbr_address_add_update(ifp, ifc); + + if_nbr_ipv6ll_to_ipv4ll_neigh_update(ifp, address, 1); +} + +void nbr_connected_delete_ipv6(struct interface *ifp, struct in6_addr *address) +{ + struct nbr_connected *ifc; + struct prefix p; + + p.family = AF_INET6; + IPV6_ADDR_COPY(&p.u.prefix, address); + p.prefixlen = IPV6_MAX_PREFIXLEN; + + ifc = nbr_connected_check(ifp, &p); + if (!ifc) + return; + + listnode_delete(ifp->nbr_connected, ifc); + + zebra_interface_nbr_address_delete_update(ifp, ifc); + + if_nbr_ipv6ll_to_ipv4ll_neigh_update(ifp, address, 0); + + nbr_connected_free(ifc); +} + +/* + * The cmd passed to zsend_interface_update may be ZEBRA_INTERFACE_UP or + * ZEBRA_INTERFACE_DOWN. + * + * The ZEBRA_INTERFACE_UP message is sent from the zebra server to + * the clients in one of 2 situations: + * - an if_up is detected e.g., as a result of an RTM_IFINFO message + * - a vty command modifying the bandwidth of an interface is received. + * The ZEBRA_INTERFACE_DOWN message is sent when an if_down is detected. + */ +int zsend_interface_update(int cmd, struct zserv *client, struct interface *ifp) +{ + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, cmd, ifp->vrf_id); + zserv_encode_interface(s, ifp); + + if (cmd == ZEBRA_INTERFACE_UP) + client->ifup_cnt++; + else + client->ifdown_cnt++; + + return zebra_server_send_message(client, s); +} + +int zsend_redistribute_route(int cmd, struct zserv *client, struct prefix *p, + struct prefix *src_p, struct route_entry *re) +{ + struct zapi_route api; + struct zapi_nexthop *api_nh; + struct nexthop *nexthop; + int count = 0; + + memset(&api, 0, sizeof(api)); + api.vrf_id = re->vrf_id; + api.type = re->type; + api.instance = re->instance; + api.flags = re->flags; + + /* Prefix. */ + api.prefix = *p; + if (src_p) { + SET_FLAG(api.message, ZAPI_MESSAGE_SRCPFX); + memcpy(&api.src_prefix, src_p, sizeof(api.src_prefix)); + } + + /* Nexthops. */ + if (re->nexthop_active_num) { + SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP); + api.nexthop_num = re->nexthop_active_num; + } + for (nexthop = re->ng.nexthop; nexthop; nexthop = nexthop->next) { + if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) + continue; + + api_nh = &api.nexthops[count]; + api_nh->vrf_id = nexthop->vrf_id; + api_nh->type = nexthop->type; + switch (nexthop->type) { + case NEXTHOP_TYPE_BLACKHOLE: + api_nh->bh_type = nexthop->bh_type; + break; + case NEXTHOP_TYPE_IPV4: + api_nh->gate.ipv4 = nexthop->gate.ipv4; + break; + case NEXTHOP_TYPE_IPV4_IFINDEX: + api_nh->gate.ipv4 = nexthop->gate.ipv4; + api_nh->ifindex = nexthop->ifindex; + break; + case NEXTHOP_TYPE_IFINDEX: + api_nh->ifindex = nexthop->ifindex; + break; + case NEXTHOP_TYPE_IPV6: + api_nh->gate.ipv6 = nexthop->gate.ipv6; + break; + case NEXTHOP_TYPE_IPV6_IFINDEX: + api_nh->gate.ipv6 = nexthop->gate.ipv6; + api_nh->ifindex = nexthop->ifindex; + } + count++; + } + + /* Attributes. */ + SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE); + api.distance = re->distance; + SET_FLAG(api.message, ZAPI_MESSAGE_METRIC); + api.metric = re->metric; + if (re->tag) { + SET_FLAG(api.message, ZAPI_MESSAGE_TAG); + api.tag = re->tag; + } + SET_FLAG(api.message, ZAPI_MESSAGE_MTU); + api.mtu = re->mtu; + + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + /* Encode route and send. */ + if (zapi_route_encode(cmd, s, &api) < 0) { + stream_free(s); + return -1; + } + + if (IS_ZEBRA_DEBUG_SEND) { + char buf_prefix[PREFIX_STRLEN]; + prefix2str(&api.prefix, buf_prefix, sizeof(buf_prefix)); + + zlog_debug("%s: %s to client %s: type %s, vrf_id %d, p %s", + __func__, zserv_command_string(cmd), + zebra_route_string(client->proto), + zebra_route_string(api.type), api.vrf_id, + buf_prefix); + } + return zebra_server_send_message(client, s); +} + +/* + * Modified version of zsend_ipv4_nexthop_lookup(): Query unicast rib if + * nexthop is not found on mrib. Returns both route metric and protocol + * distance. + */ +static int zsend_ipv4_nexthop_lookup_mrib(struct zserv *client, + struct in_addr addr, + struct route_entry *re, + struct zebra_vrf *zvrf) +{ + struct stream *s; + unsigned long nump; + uint8_t num; + struct nexthop *nexthop; + + /* Get output stream. */ + s = stream_new(ZEBRA_MAX_PACKET_SIZ); + stream_reset(s); + + /* Fill in result. */ + zclient_create_header(s, ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB, zvrf_id(zvrf)); + stream_put_in_addr(s, &addr); + + if (re) { + stream_putc(s, re->distance); + stream_putl(s, re->metric); + num = 0; + nump = stream_get_endp( + s); /* remember position for nexthop_num */ + stream_putc(s, 0); /* reserve room for nexthop_num */ + /* Only non-recursive routes are elegible to resolve the nexthop + * we + * are looking up. Therefore, we will just iterate over the top + * chain of nexthops. */ + for (nexthop = re->ng.nexthop; nexthop; nexthop = nexthop->next) + if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) + num += zserv_encode_nexthop(s, nexthop); + + stream_putc_at(s, nump, num); /* store nexthop_num */ + } else { + stream_putc(s, 0); /* distance */ + stream_putl(s, 0); /* metric */ + stream_putc(s, 0); /* nexthop_num */ + } + + stream_putw_at(s, 0, stream_get_endp(s)); + + return zebra_server_send_message(client, s); +} + +int zsend_route_notify_owner(struct route_entry *re, struct prefix *p, + enum zapi_route_notify_owner note) +{ + struct zserv *client; + struct stream *s; + uint8_t blen; + + client = zebra_find_client(re->type, re->instance); + if (!client || !client->notify_owner) { + if (IS_ZEBRA_DEBUG_PACKET) { + char buff[PREFIX_STRLEN]; + + zlog_debug( + "Not Notifying Owner: %u about prefix %s(%u) %d vrf: %u", + re->type, prefix2str(p, buff, sizeof(buff)), + re->table, note, re->vrf_id); + } + return 0; + } + + if (IS_ZEBRA_DEBUG_PACKET) { + char buff[PREFIX_STRLEN]; + + zlog_debug("Notifying Owner: %u about prefix %s(%u) %d vrf: %u", + re->type, prefix2str(p, buff, sizeof(buff)), + re->table, note, re->vrf_id); + } + + s = stream_new(ZEBRA_MAX_PACKET_SIZ); + stream_reset(s); + + zclient_create_header(s, ZEBRA_ROUTE_NOTIFY_OWNER, re->vrf_id); + + stream_put(s, ¬e, sizeof(note)); + + stream_putc(s, p->family); + + blen = prefix_blen(p); + stream_putc(s, p->prefixlen); + stream_put(s, &p->u.prefix, blen); + + stream_putl(s, re->table); + + stream_putw_at(s, 0, stream_get_endp(s)); + + return zebra_server_send_message(client, s); +} + +void zsend_rule_notify_owner(struct zebra_pbr_rule *rule, + enum zapi_rule_notify_owner note) +{ + struct listnode *node; + struct zserv *client; + struct stream *s; + + if (IS_ZEBRA_DEBUG_PACKET) + zlog_debug("%s: Notifying %u", __PRETTY_FUNCTION__, + rule->rule.unique); + + for (ALL_LIST_ELEMENTS_RO(zebrad.client_list, node, client)) { + if (rule->sock == client->sock) + break; + } + + if (!client) + return; + + s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, ZEBRA_RULE_NOTIFY_OWNER, VRF_DEFAULT); + stream_put(s, ¬e, sizeof(note)); + stream_putl(s, rule->rule.seq); + stream_putl(s, rule->rule.priority); + stream_putl(s, rule->rule.unique); + if (rule->ifp) + stream_putl(s, rule->ifp->ifindex); + else + stream_putl(s, 0); + + stream_putw_at(s, 0, stream_get_endp(s)); + + zebra_server_send_message(client, s); +} + +void zsend_ipset_notify_owner(struct zebra_pbr_ipset *ipset, + enum zapi_ipset_notify_owner note) +{ + struct listnode *node; + struct zserv *client; + struct stream *s; + + if (IS_ZEBRA_DEBUG_PACKET) + zlog_debug("%s: Notifying %u", __PRETTY_FUNCTION__, + ipset->unique); + + for (ALL_LIST_ELEMENTS_RO(zebrad.client_list, node, client)) { + if (ipset->sock == client->sock) + break; + } + + if (!client) + return; + + s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, ZEBRA_IPSET_NOTIFY_OWNER, VRF_DEFAULT); + stream_put(s, ¬e, sizeof(note)); + stream_putl(s, ipset->unique); + stream_put(s, ipset->ipset_name, ZEBRA_IPSET_NAME_SIZE); + stream_putw_at(s, 0, stream_get_endp(s)); + + zebra_server_send_message(client, s); +} + +void zsend_ipset_entry_notify_owner(struct zebra_pbr_ipset_entry *ipset, + enum zapi_ipset_entry_notify_owner note) +{ + struct listnode *node; + struct zserv *client; + struct stream *s; + + if (IS_ZEBRA_DEBUG_PACKET) + zlog_debug("%s: Notifying %u", __PRETTY_FUNCTION__, + ipset->unique); + + for (ALL_LIST_ELEMENTS_RO(zebrad.client_list, node, client)) { + if (ipset->sock == client->sock) + break; + } + + if (!client) + return; + + s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, ZEBRA_IPSET_ENTRY_NOTIFY_OWNER, VRF_DEFAULT); + stream_put(s, ¬e, sizeof(note)); + stream_putl(s, ipset->unique); + stream_put(s, ipset->backpointer->ipset_name, ZEBRA_IPSET_NAME_SIZE); + stream_putw_at(s, 0, stream_get_endp(s)); + + zebra_server_send_message(client, s); +} + +void zsend_iptable_notify_owner(struct zebra_pbr_iptable *iptable, + enum zapi_iptable_notify_owner note) +{ + struct listnode *node; + struct zserv *client; + struct stream *s; + + if (IS_ZEBRA_DEBUG_PACKET) + zlog_debug("%s: Notifying %u", __PRETTY_FUNCTION__, + iptable->unique); + + for (ALL_LIST_ELEMENTS_RO(zebrad.client_list, node, client)) { + if (iptable->sock == client->sock) + break; + } + + if (!client) + return; + + s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, ZEBRA_IPTABLE_NOTIFY_OWNER, VRF_DEFAULT); + stream_put(s, ¬e, sizeof(note)); + stream_putl(s, iptable->unique); + stream_putw_at(s, 0, stream_get_endp(s)); + + zebra_server_send_message(client, s); +} + +/* Router-id is updated. Send ZEBRA_ROUTER_ID_ADD to client. */ +int zsend_router_id_update(struct zserv *client, struct prefix *p, + vrf_id_t vrf_id) +{ + int blen; + + /* Check this client need interface information. */ + if (!vrf_bitmap_check(client->ridinfo, vrf_id)) + return 0; + + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + /* Message type. */ + zclient_create_header(s, ZEBRA_ROUTER_ID_UPDATE, vrf_id); + + /* Prefix information. */ + stream_putc(s, p->family); + blen = prefix_blen(p); + stream_put(s, &p->u.prefix, blen); + stream_putc(s, p->prefixlen); + + /* Write packet size. */ + stream_putw_at(s, 0, stream_get_endp(s)); + + return zebra_server_send_message(client, s); +} + +/* + * Function used by Zebra to send a PW status update to LDP daemon + */ +int zsend_pw_update(struct zserv *client, struct zebra_pw *pw) +{ + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, ZEBRA_PW_STATUS_UPDATE, pw->vrf_id); + stream_write(s, pw->ifname, IF_NAMESIZE); + stream_putl(s, pw->ifindex); + stream_putl(s, pw->status); + + /* Put length at the first point of the stream. */ + stream_putw_at(s, 0, stream_get_endp(s)); + + return zebra_server_send_message(client, s); +} + +/* Send response to a get label chunk request to client */ +static int zsend_assign_label_chunk_response(struct zserv *client, + vrf_id_t vrf_id, + struct label_manager_chunk *lmc) +{ + int ret; + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, ZEBRA_GET_LABEL_CHUNK, vrf_id); + + if (lmc) { + /* keep */ + stream_putc(s, lmc->keep); + /* start and end labels */ + stream_putl(s, lmc->start); + stream_putl(s, lmc->end); + } + + /* Write packet size. */ + stream_putw_at(s, 0, stream_get_endp(s)); + + ret = writen(client->sock, s->data, stream_get_endp(s)); + stream_free(s); + return ret; +} + +/* Send response to a label manager connect request to client */ +static int zsend_label_manager_connect_response(struct zserv *client, + vrf_id_t vrf_id, + unsigned short result) +{ + int ret; + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, ZEBRA_LABEL_MANAGER_CONNECT, vrf_id); + + /* result */ + stream_putc(s, result); + + /* Write packet size. */ + stream_putw_at(s, 0, stream_get_endp(s)); + + ret = writen(client->sock, s->data, stream_get_endp(s)); + stream_free(s); + + return ret; +} + +/* Send response to a get table chunk request to client */ +static int zsend_assign_table_chunk_response(struct zserv *client, + vrf_id_t vrf_id, + struct table_manager_chunk *tmc) +{ + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, ZEBRA_GET_TABLE_CHUNK, vrf_id); + + if (tmc) { + /* start and end labels */ + stream_putl(s, tmc->start); + stream_putl(s, tmc->end); + } + + /* Write packet size. */ + stream_putw_at(s, 0, stream_get_endp(s)); + + return zebra_server_send_message(client, s); +} + +static int zsend_table_manager_connect_response(struct zserv *client, + vrf_id_t vrf_id, + uint16_t result) +{ + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, ZEBRA_TABLE_MANAGER_CONNECT, vrf_id); + + /* result */ + stream_putc(s, result); + + stream_putw_at(s, 0, stream_get_endp(s)); + + return zebra_server_send_message(client, s); +} + +/* Inbound message handling ------------------------------------------------ */ + +int cmd2type[] = { + [ZEBRA_NEXTHOP_REGISTER] = RNH_NEXTHOP_TYPE, + [ZEBRA_NEXTHOP_UNREGISTER] = RNH_NEXTHOP_TYPE, + [ZEBRA_IMPORT_ROUTE_REGISTER] = RNH_IMPORT_CHECK_TYPE, + [ZEBRA_IMPORT_ROUTE_UNREGISTER] = RNH_IMPORT_CHECK_TYPE, +}; + +/* Nexthop register */ +static void zread_rnh_register(ZAPI_HANDLER_ARGS) +{ + struct rnh *rnh; + struct stream *s; + struct prefix p; + unsigned short l = 0; + uint8_t flags = 0; + uint16_t type = cmd2type[hdr->command]; + + if (IS_ZEBRA_DEBUG_NHT) + zlog_debug( + "rnh_register msg from client %s: hdr->length=%d, type=%s vrf=%u\n", + zebra_route_string(client->proto), hdr->length, + (type == RNH_NEXTHOP_TYPE) ? "nexthop" : "route", + zvrf->vrf->vrf_id); + + s = msg; + + client->nh_reg_time = monotime(NULL); + + while (l < hdr->length) { + STREAM_GETC(s, flags); + STREAM_GETW(s, p.family); + STREAM_GETC(s, p.prefixlen); + l += 4; + if (p.family == AF_INET) { + if (p.prefixlen > IPV4_MAX_BITLEN) { + zlog_warn( + "%s: Specified prefix hdr->length %d is too large for a v4 address", + __PRETTY_FUNCTION__, p.prefixlen); + return; + } + STREAM_GET(&p.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN); + l += IPV4_MAX_BYTELEN; + } else if (p.family == AF_INET6) { + if (p.prefixlen > IPV6_MAX_BITLEN) { + zlog_warn( + "%s: Specified prefix hdr->length %d is to large for a v6 address", + __PRETTY_FUNCTION__, p.prefixlen); + return; + } + STREAM_GET(&p.u.prefix6, s, IPV6_MAX_BYTELEN); + l += IPV6_MAX_BYTELEN; + } else { + zlog_err( + "rnh_register: Received unknown family type %d\n", + p.family); + return; + } + rnh = zebra_add_rnh(&p, zvrf_id(zvrf), type); + if (type == RNH_NEXTHOP_TYPE) { + if (flags + && !CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED)) + SET_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED); + else if (!flags + && CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED)) + UNSET_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED); + } else if (type == RNH_IMPORT_CHECK_TYPE) { + if (flags + && !CHECK_FLAG(rnh->flags, ZEBRA_NHT_EXACT_MATCH)) + SET_FLAG(rnh->flags, ZEBRA_NHT_EXACT_MATCH); + else if (!flags + && CHECK_FLAG(rnh->flags, + ZEBRA_NHT_EXACT_MATCH)) + UNSET_FLAG(rnh->flags, ZEBRA_NHT_EXACT_MATCH); + } + + zebra_add_rnh_client(rnh, client, type, zvrf_id(zvrf)); + /* Anything not AF_INET/INET6 has been filtered out above */ + zebra_evaluate_rnh(zvrf_id(zvrf), p.family, 1, type, &p); + } + +stream_failure: + return; +} + +/* Nexthop register */ +static void zread_rnh_unregister(ZAPI_HANDLER_ARGS) +{ + struct rnh *rnh; + struct stream *s; + struct prefix p; + unsigned short l = 0; + uint16_t type = cmd2type[hdr->command]; + + if (IS_ZEBRA_DEBUG_NHT) + zlog_debug( + "rnh_unregister msg from client %s: hdr->length=%d vrf: %u\n", + zebra_route_string(client->proto), hdr->length, + zvrf->vrf->vrf_id); + + s = msg; + + while (l < hdr->length) { + uint8_t flags; + + STREAM_GETC(s, flags); + if (flags != 0) + goto stream_failure; + + STREAM_GETW(s, p.family); + STREAM_GETC(s, p.prefixlen); + l += 4; + if (p.family == AF_INET) { + if (p.prefixlen > IPV4_MAX_BITLEN) { + zlog_warn( + "%s: Specified prefix hdr->length %d is to large for a v4 address", + __PRETTY_FUNCTION__, p.prefixlen); + return; + } + STREAM_GET(&p.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN); + l += IPV4_MAX_BYTELEN; + } else if (p.family == AF_INET6) { + if (p.prefixlen > IPV6_MAX_BITLEN) { + zlog_warn( + "%s: Specified prefix hdr->length %d is to large for a v6 address", + __PRETTY_FUNCTION__, p.prefixlen); + return; + } + STREAM_GET(&p.u.prefix6, s, IPV6_MAX_BYTELEN); + l += IPV6_MAX_BYTELEN; + } else { + zlog_err( + "rnh_register: Received unknown family type %d\n", + p.family); + return; + } + rnh = zebra_lookup_rnh(&p, zvrf_id(zvrf), type); + if (rnh) { + client->nh_dereg_time = monotime(NULL); + zebra_remove_rnh_client(rnh, client, type); + } + } +stream_failure: + return; +} + +#define ZEBRA_MIN_FEC_LENGTH 5 + +/* FEC register */ +static void zread_fec_register(ZAPI_HANDLER_ARGS) +{ + struct stream *s; + unsigned short l = 0; + struct prefix p; + uint16_t flags; + uint32_t label_index = MPLS_INVALID_LABEL_INDEX; + + s = msg; + zvrf = vrf_info_lookup(VRF_DEFAULT); + if (!zvrf) + return; // unexpected + + /* + * The minimum amount of data that can be sent for one fec + * registration + */ + if (hdr->length < ZEBRA_MIN_FEC_LENGTH) { + zlog_err( + "fec_register: Received a fec register of hdr->length %d, it is of insufficient size to properly decode", + hdr->length); + return; + } + + while (l < hdr->length) { + STREAM_GETW(s, flags); + memset(&p, 0, sizeof(p)); + STREAM_GETW(s, p.family); + if (p.family != AF_INET && p.family != AF_INET6) { + zlog_err( + "fec_register: Received unknown family type %d\n", + p.family); + return; + } + STREAM_GETC(s, p.prefixlen); + if ((p.family == AF_INET && p.prefixlen > IPV4_MAX_BITLEN) + || (p.family == AF_INET6 + && p.prefixlen > IPV6_MAX_BITLEN)) { + zlog_warn( + "%s: Specified prefix hdr->length: %d is to long for %d", + __PRETTY_FUNCTION__, p.prefixlen, p.family); + return; + } + l += 5; + STREAM_GET(&p.u.prefix, s, PSIZE(p.prefixlen)); + l += PSIZE(p.prefixlen); + if (flags & ZEBRA_FEC_REGISTER_LABEL_INDEX) { + STREAM_GETL(s, label_index); + l += 4; + } else + label_index = MPLS_INVALID_LABEL_INDEX; + zebra_mpls_fec_register(zvrf, &p, label_index, client); + } + +stream_failure: + return; +} + +/* FEC unregister */ +static void zread_fec_unregister(ZAPI_HANDLER_ARGS) +{ + struct stream *s; + unsigned short l = 0; + struct prefix p; + uint16_t flags; + + s = msg; + zvrf = vrf_info_lookup(VRF_DEFAULT); + if (!zvrf) + return; // unexpected + + /* + * The minimum amount of data that can be sent for one + * fec unregistration + */ + if (hdr->length < ZEBRA_MIN_FEC_LENGTH) { + zlog_err( + "fec_unregister: Received a fec unregister of hdr->length %d, it is of insufficient size to properly decode", + hdr->length); + return; + } + + while (l < hdr->length) { + STREAM_GETW(s, flags); + if (flags != 0) + goto stream_failure; + + memset(&p, 0, sizeof(p)); + STREAM_GETW(s, p.family); + if (p.family != AF_INET && p.family != AF_INET6) { + zlog_err( + "fec_unregister: Received unknown family type %d\n", + p.family); + return; + } + STREAM_GETC(s, p.prefixlen); + if ((p.family == AF_INET && p.prefixlen > IPV4_MAX_BITLEN) + || (p.family == AF_INET6 + && p.prefixlen > IPV6_MAX_BITLEN)) { + zlog_warn( + "%s: Received prefix hdr->length %d which is greater than %d can support", + __PRETTY_FUNCTION__, p.prefixlen, p.family); + return; + } + l += 5; + STREAM_GET(&p.u.prefix, s, PSIZE(p.prefixlen)); + l += PSIZE(p.prefixlen); + zebra_mpls_fec_unregister(zvrf, &p, client); + } + +stream_failure: + return; +} + + +/* + * Register zebra server interface information. + * Send current all interface and address information. + */ +static void zread_interface_add(ZAPI_HANDLER_ARGS) +{ + struct vrf *vrf; + struct interface *ifp; + + /* Interface information is needed. */ + vrf_bitmap_set(client->ifinfo, zvrf_id(zvrf)); + + RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { + FOR_ALL_INTERFACES (vrf, ifp) { + /* Skip pseudo interface. */ + if (!CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE)) + continue; + + zsend_interface_add(client, ifp); + zsend_interface_addresses(client, ifp); + } + } +} + +/* Unregister zebra server interface information. */ +static void zread_interface_delete(ZAPI_HANDLER_ARGS) +{ + vrf_bitmap_unset(client->ifinfo, zvrf_id(zvrf)); +} + +void zserv_nexthop_num_warn(const char *caller, const struct prefix *p, + const unsigned int nexthop_num) +{ + if (nexthop_num > multipath_num) { + char buff[PREFIX2STR_BUFFER]; + prefix2str(p, buff, sizeof(buff)); + zlog_warn( + "%s: Prefix %s has %d nexthops, but we can only use the first %d", + caller, buff, nexthop_num, multipath_num); + } +} + +static void zread_route_add(ZAPI_HANDLER_ARGS) +{ + struct stream *s; + struct zapi_route api; + struct zapi_nexthop *api_nh; + afi_t afi; + struct prefix_ipv6 *src_p = NULL; + struct route_entry *re; + struct nexthop *nexthop = NULL; + int i, ret; + vrf_id_t vrf_id = 0; + struct ipaddr vtep_ip; + + s = msg; + if (zapi_route_decode(s, &api) < 0) { + if (IS_ZEBRA_DEBUG_RECV) + zlog_debug("%s: Unable to decode zapi_route sent", + __PRETTY_FUNCTION__); + return; + } + + if (IS_ZEBRA_DEBUG_RECV) { + char buf_prefix[PREFIX_STRLEN]; + prefix2str(&api.prefix, buf_prefix, sizeof(buf_prefix)); + zlog_debug("%s: p=%s, ZAPI_MESSAGE_LABEL: %sset, flags=0x%x", + __func__, buf_prefix, + (CHECK_FLAG(api.message, ZAPI_MESSAGE_LABEL) ? "" + : "un"), + api.flags); + } + + /* Allocate new route. */ + vrf_id = zvrf_id(zvrf); + re = XCALLOC(MTYPE_RE, sizeof(struct route_entry)); + re->type = api.type; + re->instance = api.instance; + re->flags = api.flags; + re->uptime = time(NULL); + re->vrf_id = vrf_id; + if (api.tableid && vrf_id == VRF_DEFAULT) + re->table = api.tableid; + else + re->table = zvrf->table_id; + + /* + * TBD should _all_ of the nexthop add operations use + * api_nh->vrf_id instead of re->vrf_id ? I only changed + * for cases NEXTHOP_TYPE_IPV4 and NEXTHOP_TYPE_IPV6. + */ + if (CHECK_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP)) { + for (i = 0; i < api.nexthop_num; i++) { + api_nh = &api.nexthops[i]; + ifindex_t ifindex = 0; + + if (IS_ZEBRA_DEBUG_RECV) { + zlog_debug("nh type %d", api_nh->type); + } + + switch (api_nh->type) { + case NEXTHOP_TYPE_IFINDEX: + nexthop = route_entry_nexthop_ifindex_add( + re, api_nh->ifindex, api_nh->vrf_id); + break; + case NEXTHOP_TYPE_IPV4: + if (IS_ZEBRA_DEBUG_RECV) { + char nhbuf[INET6_ADDRSTRLEN] = {0}; + inet_ntop(AF_INET, &api_nh->gate.ipv4, + nhbuf, INET6_ADDRSTRLEN); + zlog_debug("%s: nh=%s, vrf_id=%d", + __func__, nhbuf, + api_nh->vrf_id); + } + nexthop = route_entry_nexthop_ipv4_add( + re, &api_nh->gate.ipv4, NULL, + api_nh->vrf_id); + break; + case NEXTHOP_TYPE_IPV4_IFINDEX: + + memset(&vtep_ip, 0, sizeof(struct ipaddr)); + if (CHECK_FLAG(api.flags, + ZEBRA_FLAG_EVPN_ROUTE)) { + ifindex = get_l3vni_svi_ifindex(vrf_id); + } else { + ifindex = api_nh->ifindex; + } + + if (IS_ZEBRA_DEBUG_RECV) { + char nhbuf[INET6_ADDRSTRLEN] = {0}; + inet_ntop(AF_INET, &api_nh->gate.ipv4, + nhbuf, INET6_ADDRSTRLEN); + zlog_debug( + "%s: nh=%s, vrf_id=%d (re->vrf_id=%d), ifindex=%d", + __func__, nhbuf, api_nh->vrf_id, + re->vrf_id, ifindex); + } + nexthop = route_entry_nexthop_ipv4_ifindex_add( + re, &api_nh->gate.ipv4, NULL, ifindex, + api_nh->vrf_id); + + /* if this an EVPN route entry, + * program the nh as neigh + */ + if (CHECK_FLAG(api.flags, + ZEBRA_FLAG_EVPN_ROUTE)) { + SET_FLAG(nexthop->flags, + NEXTHOP_FLAG_EVPN_RVTEP); + vtep_ip.ipa_type = IPADDR_V4; + memcpy(&(vtep_ip.ipaddr_v4), + &(api_nh->gate.ipv4), + sizeof(struct in_addr)); + zebra_vxlan_evpn_vrf_route_add( + vrf_id, &api.rmac, &vtep_ip, + &api.prefix); + } + break; + case NEXTHOP_TYPE_IPV6: + nexthop = route_entry_nexthop_ipv6_add( + re, &api_nh->gate.ipv6, api_nh->vrf_id); + break; + case NEXTHOP_TYPE_IPV6_IFINDEX: + memset(&vtep_ip, 0, sizeof(struct ipaddr)); + if (CHECK_FLAG(api.flags, + ZEBRA_FLAG_EVPN_ROUTE)) { + ifindex = get_l3vni_svi_ifindex(vrf_id); + } else { + ifindex = api_nh->ifindex; + } + + nexthop = route_entry_nexthop_ipv6_ifindex_add( + re, &api_nh->gate.ipv6, ifindex, + api_nh->vrf_id); + + /* if this an EVPN route entry, + * program the nh as neigh + */ + if (CHECK_FLAG(api.flags, + ZEBRA_FLAG_EVPN_ROUTE)) { + SET_FLAG(nexthop->flags, + NEXTHOP_FLAG_EVPN_RVTEP); + vtep_ip.ipa_type = IPADDR_V6; + memcpy(&vtep_ip.ipaddr_v6, + &(api_nh->gate.ipv6), + sizeof(struct in6_addr)); + zebra_vxlan_evpn_vrf_route_add( + vrf_id, &api.rmac, &vtep_ip, + &api.prefix); + } + break; + case NEXTHOP_TYPE_BLACKHOLE: + nexthop = route_entry_nexthop_blackhole_add( + re, api_nh->bh_type); + break; + } + + if (!nexthop) { + zlog_warn( + "%s: Nexthops Specified: %d but we failed to properly create one", + __PRETTY_FUNCTION__, api.nexthop_num); + nexthops_free(re->ng.nexthop); + XFREE(MTYPE_RE, re); + return; + } + /* MPLS labels for BGP-LU or Segment Routing */ + if (CHECK_FLAG(api.message, ZAPI_MESSAGE_LABEL) + && api_nh->type != NEXTHOP_TYPE_IFINDEX + && api_nh->type != NEXTHOP_TYPE_BLACKHOLE) { + enum lsp_types_t label_type; + + label_type = + lsp_type_from_re_type(client->proto); + + if (IS_ZEBRA_DEBUG_RECV) { + zlog_debug( + "%s: adding %d labels of type %d (1st=%u)", + __func__, api_nh->label_num, + label_type, api_nh->labels[0]); + } + + nexthop_add_labels(nexthop, label_type, + api_nh->label_num, + &api_nh->labels[0]); + } + } + } + + if (CHECK_FLAG(api.message, ZAPI_MESSAGE_DISTANCE)) + re->distance = api.distance; + if (CHECK_FLAG(api.message, ZAPI_MESSAGE_METRIC)) + re->metric = api.metric; + if (CHECK_FLAG(api.message, ZAPI_MESSAGE_TAG)) + re->tag = api.tag; + if (CHECK_FLAG(api.message, ZAPI_MESSAGE_MTU)) + re->mtu = api.mtu; + + afi = family2afi(api.prefix.family); + if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) { + zlog_warn("%s: Received SRC Prefix but afi is not v6", + __PRETTY_FUNCTION__); + nexthops_free(re->ng.nexthop); + XFREE(MTYPE_RE, re); + return; + } + if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) + src_p = &api.src_prefix; + + ret = rib_add_multipath(afi, api.safi, &api.prefix, src_p, re); + + /* Stats */ + switch (api.prefix.family) { + case AF_INET: + if (ret > 0) + client->v4_route_add_cnt++; + else if (ret < 0) + client->v4_route_upd8_cnt++; + break; + case AF_INET6: + if (ret > 0) + client->v6_route_add_cnt++; + else if (ret < 0) + client->v6_route_upd8_cnt++; + break; + } +} + +static void zread_route_del(ZAPI_HANDLER_ARGS) +{ + struct stream *s; + struct zapi_route api; + afi_t afi; + struct prefix_ipv6 *src_p = NULL; + uint32_t table_id; + + s = msg; + if (zapi_route_decode(s, &api) < 0) + return; + + afi = family2afi(api.prefix.family); + if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) { + zlog_warn("%s: Received a src prefix while afi is not v6", + __PRETTY_FUNCTION__); + return; + } + if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) + src_p = &api.src_prefix; + + if (api.vrf_id == VRF_DEFAULT && api.tableid != 0) + table_id = api.tableid; + else + table_id = zvrf->table_id; + + rib_delete(afi, api.safi, zvrf_id(zvrf), api.type, api.instance, + api.flags, &api.prefix, src_p, NULL, table_id, api.metric, + false, &api.rmac); + + /* Stats */ + switch (api.prefix.family) { + case AF_INET: + client->v4_route_del_cnt++; + break; + case AF_INET6: + client->v6_route_del_cnt++; + break; + } +} + +/* This function support multiple nexthop. */ +/* + * Parse the ZEBRA_IPV4_ROUTE_ADD sent from client. Update re and + * add kernel route. + */ +static void zread_ipv4_add(ZAPI_HANDLER_ARGS) +{ + int i; + struct route_entry *re; + struct prefix p; + uint8_t message; + struct in_addr nhop_addr; + uint8_t nexthop_num; + uint8_t nexthop_type; + struct stream *s; + ifindex_t ifindex; + safi_t safi; + int ret; + enum lsp_types_t label_type = ZEBRA_LSP_NONE; + mpls_label_t label; + struct nexthop *nexthop; + enum blackhole_type bh_type = BLACKHOLE_NULL; + + /* Get input stream. */ + s = msg; + + /* Allocate new re. */ + re = XCALLOC(MTYPE_RE, sizeof(struct route_entry)); + + /* Type, flags, message. */ + STREAM_GETC(s, re->type); + if (re->type > ZEBRA_ROUTE_MAX) { + zlog_warn("%s: Specified route type %d is not a legal value\n", + __PRETTY_FUNCTION__, re->type); + XFREE(MTYPE_RE, re); + return; + } + STREAM_GETW(s, re->instance); + STREAM_GETL(s, re->flags); + STREAM_GETC(s, message); + STREAM_GETW(s, safi); + re->uptime = time(NULL); + + /* IPv4 prefix. */ + memset(&p, 0, sizeof(struct prefix_ipv4)); + p.family = AF_INET; + STREAM_GETC(s, p.prefixlen); + if (p.prefixlen > IPV4_MAX_BITLEN) { + zlog_warn( + "%s: Specified prefix length %d is greater than what v4 can be", + __PRETTY_FUNCTION__, p.prefixlen); + XFREE(MTYPE_RE, re); + return; + } + STREAM_GET(&p.u.prefix4, s, PSIZE(p.prefixlen)); + + /* VRF ID */ + re->vrf_id = zvrf_id(zvrf); + + /* Nexthop parse. */ + if (CHECK_FLAG(message, ZAPI_MESSAGE_NEXTHOP)) { + STREAM_GETC(s, nexthop_num); + zserv_nexthop_num_warn(__func__, (const struct prefix *)&p, + nexthop_num); + + if (CHECK_FLAG(message, ZAPI_MESSAGE_LABEL)) + label_type = lsp_type_from_re_type(client->proto); + + for (i = 0; i < nexthop_num; i++) { + STREAM_GETC(s, nexthop_type); + + switch (nexthop_type) { + case NEXTHOP_TYPE_IFINDEX: + STREAM_GETL(s, ifindex); + route_entry_nexthop_ifindex_add(re, ifindex, + re->vrf_id); + break; + case NEXTHOP_TYPE_IPV4: + STREAM_GET(&nhop_addr.s_addr, s, + IPV4_MAX_BYTELEN); + nexthop = route_entry_nexthop_ipv4_add( + re, &nhop_addr, NULL, re->vrf_id); + /* For labeled-unicast, each nexthop is followed + * by label. */ + if (CHECK_FLAG(message, ZAPI_MESSAGE_LABEL)) { + STREAM_GETL(s, label); + nexthop_add_labels(nexthop, label_type, + 1, &label); + } + break; + case NEXTHOP_TYPE_IPV4_IFINDEX: + STREAM_GET(&nhop_addr.s_addr, s, + IPV4_MAX_BYTELEN); + STREAM_GETL(s, ifindex); + route_entry_nexthop_ipv4_ifindex_add( + re, &nhop_addr, NULL, ifindex, + re->vrf_id); + break; + case NEXTHOP_TYPE_IPV6: + zlog_warn( + "%s: Please use ZEBRA_ROUTE_ADD if you want to pass v6 nexthops", + __PRETTY_FUNCTION__); + nexthops_free(re->ng.nexthop); + XFREE(MTYPE_RE, re); + return; + break; + case NEXTHOP_TYPE_BLACKHOLE: + route_entry_nexthop_blackhole_add(re, bh_type); + break; + default: + zlog_warn( + "%s: Specified nexthop type: %d does not exist", + __PRETTY_FUNCTION__, nexthop_type); + nexthops_free(re->ng.nexthop); + XFREE(MTYPE_RE, re); + return; + } + } + } + + /* Distance. */ + if (CHECK_FLAG(message, ZAPI_MESSAGE_DISTANCE)) + STREAM_GETC(s, re->distance); + + /* Metric. */ + if (CHECK_FLAG(message, ZAPI_MESSAGE_METRIC)) + STREAM_GETL(s, re->metric); + + /* Tag */ + if (CHECK_FLAG(message, ZAPI_MESSAGE_TAG)) + STREAM_GETL(s, re->tag); + else + re->tag = 0; + + if (CHECK_FLAG(message, ZAPI_MESSAGE_MTU)) + STREAM_GETL(s, re->mtu); + else + re->mtu = 0; + + /* Table */ + re->table = zvrf->table_id; + + ret = rib_add_multipath(AFI_IP, safi, &p, NULL, re); + + /* Stats */ + if (ret > 0) + client->v4_route_add_cnt++; + else if (ret < 0) + client->v4_route_upd8_cnt++; + + return; + +stream_failure: + nexthops_free(re->ng.nexthop); + XFREE(MTYPE_RE, re); +} + +/* Zebra server IPv4 prefix delete function. */ +static void zread_ipv4_delete(ZAPI_HANDLER_ARGS) +{ + struct stream *s; + struct zapi_ipv4 api; + struct prefix p; + uint32_t table_id; + + s = msg; + + /* Type, flags, message. */ + STREAM_GETC(s, api.type); + STREAM_GETW(s, api.instance); + STREAM_GETL(s, api.flags); + STREAM_GETC(s, api.message); + STREAM_GETW(s, api.safi); + + /* IPv4 prefix. */ + memset(&p, 0, sizeof(struct prefix)); + p.family = AF_INET; + STREAM_GETC(s, p.prefixlen); + if (p.prefixlen > IPV4_MAX_BITLEN) { + zlog_warn("%s: Passed in prefixlen %d is impossible", + __PRETTY_FUNCTION__, p.prefixlen); + return; + } + STREAM_GET(&p.u.prefix4, s, PSIZE(p.prefixlen)); + + table_id = zvrf->table_id; + + rib_delete(AFI_IP, api.safi, zvrf_id(zvrf), api.type, api.instance, + api.flags, &p, NULL, NULL, table_id, 0, false, NULL); + client->v4_route_del_cnt++; + +stream_failure: + return; +} + +/* MRIB Nexthop lookup for IPv4. */ +static void zread_ipv4_nexthop_lookup_mrib(ZAPI_HANDLER_ARGS) +{ + struct in_addr addr; + struct route_entry *re; + + STREAM_GET(&addr.s_addr, msg, IPV4_MAX_BYTELEN); + re = rib_match_ipv4_multicast(zvrf_id(zvrf), addr, NULL); + zsend_ipv4_nexthop_lookup_mrib(client, addr, re, zvrf); + +stream_failure: + return; +} + +/* Zebra server IPv6 prefix add function. */ +static void zread_ipv4_route_ipv6_nexthop_add(ZAPI_HANDLER_ARGS) +{ + unsigned int i; + struct stream *s; + struct in6_addr nhop_addr; + struct route_entry *re; + uint8_t message; + uint8_t nexthop_num; + uint8_t nexthop_type; + struct prefix p; + safi_t safi; + static struct in6_addr nexthops[MULTIPATH_NUM]; + static unsigned int ifindices[MULTIPATH_NUM]; + int ret; + static mpls_label_t labels[MULTIPATH_NUM]; + enum lsp_types_t label_type = ZEBRA_LSP_NONE; + mpls_label_t label; + struct nexthop *nexthop; + enum blackhole_type bh_type = BLACKHOLE_NULL; + + /* Get input stream. */ + s = msg; + + memset(&nhop_addr, 0, sizeof(struct in6_addr)); + + /* Allocate new re. */ + re = XCALLOC(MTYPE_RE, sizeof(struct route_entry)); + + /* Type, flags, message. */ + STREAM_GETC(s, re->type); + if (re->type > ZEBRA_ROUTE_MAX) { + zlog_warn("%s: Specified route type: %d is not a legal value\n", + __PRETTY_FUNCTION__, re->type); + XFREE(MTYPE_RE, re); + return; + } + STREAM_GETW(s, re->instance); + STREAM_GETL(s, re->flags); + STREAM_GETC(s, message); + STREAM_GETW(s, safi); + re->uptime = time(NULL); + + /* IPv4 prefix. */ + memset(&p, 0, sizeof(struct prefix_ipv4)); + p.family = AF_INET; + STREAM_GETC(s, p.prefixlen); + if (p.prefixlen > IPV4_MAX_BITLEN) { + zlog_warn( + "%s: Prefix Length %d is greater than what a v4 address can use", + __PRETTY_FUNCTION__, p.prefixlen); + XFREE(MTYPE_RE, re); + return; + } + STREAM_GET(&p.u.prefix4, s, PSIZE(p.prefixlen)); + + /* VRF ID */ + re->vrf_id = zvrf_id(zvrf); + + /* We need to give nh-addr, nh-ifindex with the same next-hop object + * to the re to ensure that IPv6 multipathing works; need to coalesce + * these. Clients should send the same number of paired set of + * next-hop-addr/next-hop-ifindices. */ + if (CHECK_FLAG(message, ZAPI_MESSAGE_NEXTHOP)) { + unsigned int nh_count = 0; + unsigned int if_count = 0; + unsigned int max_nh_if = 0; + + STREAM_GETC(s, nexthop_num); + zserv_nexthop_num_warn(__func__, (const struct prefix *)&p, + nexthop_num); + + if (CHECK_FLAG(message, ZAPI_MESSAGE_LABEL)) + label_type = lsp_type_from_re_type(client->proto); + + for (i = 0; i < nexthop_num; i++) { + STREAM_GETC(s, nexthop_type); + + switch (nexthop_type) { + case NEXTHOP_TYPE_IPV6: + STREAM_GET(&nhop_addr, s, 16); + if (nh_count < MULTIPATH_NUM) { + /* For labeled-unicast, each nexthop is + * followed by label. */ + if (CHECK_FLAG(message, + ZAPI_MESSAGE_LABEL)) { + STREAM_GETL(s, label); + labels[nh_count] = label; + } + nexthops[nh_count] = nhop_addr; + nh_count++; + } + break; + case NEXTHOP_TYPE_IFINDEX: + if (if_count < multipath_num) { + STREAM_GETL(s, ifindices[if_count++]); + } + break; + case NEXTHOP_TYPE_BLACKHOLE: + route_entry_nexthop_blackhole_add(re, bh_type); + break; + default: + zlog_warn( + "%s: Please use ZEBRA_ROUTE_ADD if you want to pass non v6 nexthops", + __PRETTY_FUNCTION__); + nexthops_free(re->ng.nexthop); + XFREE(MTYPE_RE, re); + return; + } + } + + max_nh_if = (nh_count > if_count) ? nh_count : if_count; + for (i = 0; i < max_nh_if; i++) { + if ((i < nh_count) + && !IN6_IS_ADDR_UNSPECIFIED(&nexthops[i])) { + if ((i < if_count) && ifindices[i]) + nexthop = + route_entry_nexthop_ipv6_ifindex_add( + re, &nexthops[i], + ifindices[i], + re->vrf_id); + else + nexthop = route_entry_nexthop_ipv6_add( + re, &nexthops[i], re->vrf_id); + + if (CHECK_FLAG(message, ZAPI_MESSAGE_LABEL)) + nexthop_add_labels(nexthop, label_type, + 1, &labels[i]); + } else { + if ((i < if_count) && ifindices[i]) + route_entry_nexthop_ifindex_add( + re, ifindices[i], re->vrf_id); + } + } + } + + /* Distance. */ + if (CHECK_FLAG(message, ZAPI_MESSAGE_DISTANCE)) + STREAM_GETC(s, re->distance); + + /* Metric. */ + if (CHECK_FLAG(message, ZAPI_MESSAGE_METRIC)) + STREAM_GETL(s, re->metric); + + /* Tag */ + if (CHECK_FLAG(message, ZAPI_MESSAGE_TAG)) + STREAM_GETL(s, re->tag); + else + re->tag = 0; + + if (CHECK_FLAG(message, ZAPI_MESSAGE_MTU)) + STREAM_GETL(s, re->mtu); + else + re->mtu = 0; + + /* Table */ + re->table = zvrf->table_id; + + ret = rib_add_multipath(AFI_IP6, safi, &p, NULL, re); + /* Stats */ + if (ret > 0) + client->v4_route_add_cnt++; + else if (ret < 0) + client->v4_route_upd8_cnt++; + + return; + +stream_failure: + nexthops_free(re->ng.nexthop); + XFREE(MTYPE_RE, re); +} + +static void zread_ipv6_add(ZAPI_HANDLER_ARGS) +{ + unsigned int i; + struct stream *s; + struct in6_addr nhop_addr; + ifindex_t ifindex; + struct route_entry *re; + uint8_t message; + uint8_t nexthop_num; + uint8_t nexthop_type; + struct prefix p; + struct prefix_ipv6 src_p, *src_pp; + safi_t safi; + static struct in6_addr nexthops[MULTIPATH_NUM]; + static unsigned int ifindices[MULTIPATH_NUM]; + int ret; + static mpls_label_t labels[MULTIPATH_NUM]; + enum lsp_types_t label_type = ZEBRA_LSP_NONE; + mpls_label_t label; + struct nexthop *nexthop; + enum blackhole_type bh_type = BLACKHOLE_NULL; + + /* Get input stream. */ + s = msg; + + memset(&nhop_addr, 0, sizeof(struct in6_addr)); + + /* Allocate new re. */ + re = XCALLOC(MTYPE_RE, sizeof(struct route_entry)); + + /* Type, flags, message. */ + STREAM_GETC(s, re->type); + if (re->type > ZEBRA_ROUTE_MAX) { + zlog_warn("%s: Specified route type: %d is not a legal value\n", + __PRETTY_FUNCTION__, re->type); + XFREE(MTYPE_RE, re); + return; + } + STREAM_GETW(s, re->instance); + STREAM_GETL(s, re->flags); + STREAM_GETC(s, message); + STREAM_GETW(s, safi); + re->uptime = time(NULL); + + /* IPv6 prefix. */ + memset(&p, 0, sizeof(p)); + p.family = AF_INET6; + STREAM_GETC(s, p.prefixlen); + if (p.prefixlen > IPV6_MAX_BITLEN) { + zlog_warn( + "%s: Specified prefix length %d is to large for v6 prefix", + __PRETTY_FUNCTION__, p.prefixlen); + XFREE(MTYPE_RE, re); + return; + } + STREAM_GET(&p.u.prefix6, s, PSIZE(p.prefixlen)); + + if (CHECK_FLAG(message, ZAPI_MESSAGE_SRCPFX)) { + memset(&src_p, 0, sizeof(src_p)); + src_p.family = AF_INET6; + STREAM_GETC(s, src_p.prefixlen); + if (src_p.prefixlen > IPV6_MAX_BITLEN) { + zlog_warn( + "%s: Specified src prefix length %d is to large for v6 prefix", + __PRETTY_FUNCTION__, src_p.prefixlen); + XFREE(MTYPE_RE, re); + return; + } + STREAM_GET(&src_p.prefix, s, PSIZE(src_p.prefixlen)); + src_pp = &src_p; + } else + src_pp = NULL; + + /* VRF ID */ + re->vrf_id = zvrf_id(zvrf); + + /* We need to give nh-addr, nh-ifindex with the same next-hop object + * to the re to ensure that IPv6 multipathing works; need to coalesce + * these. Clients should send the same number of paired set of + * next-hop-addr/next-hop-ifindices. */ + if (CHECK_FLAG(message, ZAPI_MESSAGE_NEXTHOP)) { + unsigned int nh_count = 0; + unsigned int if_count = 0; + unsigned int max_nh_if = 0; + + STREAM_GETC(s, nexthop_num); + zserv_nexthop_num_warn(__func__, (const struct prefix *)&p, + nexthop_num); + + if (CHECK_FLAG(message, ZAPI_MESSAGE_LABEL)) + label_type = lsp_type_from_re_type(client->proto); + + for (i = 0; i < nexthop_num; i++) { + STREAM_GETC(s, nexthop_type); + + switch (nexthop_type) { + case NEXTHOP_TYPE_IPV6: + STREAM_GET(&nhop_addr, s, 16); + if (nh_count < MULTIPATH_NUM) { + /* For labeled-unicast, each nexthop is + * followed by label. */ + if (CHECK_FLAG(message, + ZAPI_MESSAGE_LABEL)) { + STREAM_GETL(s, label); + labels[nh_count] = label; + } + nexthops[nh_count++] = nhop_addr; + } + break; + case NEXTHOP_TYPE_IPV6_IFINDEX: + STREAM_GET(&nhop_addr, s, 16); + STREAM_GETL(s, ifindex); + route_entry_nexthop_ipv6_ifindex_add( + re, &nhop_addr, ifindex, re->vrf_id); + break; + case NEXTHOP_TYPE_IFINDEX: + if (if_count < multipath_num) { + STREAM_GETL(s, ifindices[if_count++]); + } + break; + case NEXTHOP_TYPE_BLACKHOLE: + route_entry_nexthop_blackhole_add(re, bh_type); + break; + default: + zlog_warn( + "%s: Please use ZEBRA_ROUTE_ADD if you want to pass non v6 nexthops", + __PRETTY_FUNCTION__); + nexthops_free(re->ng.nexthop); + XFREE(MTYPE_RE, re); + return; + } + } + + max_nh_if = (nh_count > if_count) ? nh_count : if_count; + for (i = 0; i < max_nh_if; i++) { + if ((i < nh_count) + && !IN6_IS_ADDR_UNSPECIFIED(&nexthops[i])) { + if ((i < if_count) && ifindices[i]) + nexthop = + route_entry_nexthop_ipv6_ifindex_add( + re, &nexthops[i], + ifindices[i], + re->vrf_id); + else + nexthop = route_entry_nexthop_ipv6_add( + re, &nexthops[i], re->vrf_id); + if (CHECK_FLAG(message, ZAPI_MESSAGE_LABEL)) + nexthop_add_labels(nexthop, label_type, + 1, &labels[i]); + } else { + if ((i < if_count) && ifindices[i]) + route_entry_nexthop_ifindex_add( + re, ifindices[i], re->vrf_id); + } + } + } + + /* Distance. */ + if (CHECK_FLAG(message, ZAPI_MESSAGE_DISTANCE)) + STREAM_GETC(s, re->distance); + + /* Metric. */ + if (CHECK_FLAG(message, ZAPI_MESSAGE_METRIC)) + STREAM_GETL(s, re->metric); + + /* Tag */ + if (CHECK_FLAG(message, ZAPI_MESSAGE_TAG)) + STREAM_GETL(s, re->tag); + else + re->tag = 0; + + if (CHECK_FLAG(message, ZAPI_MESSAGE_MTU)) + STREAM_GETL(s, re->mtu); + else + re->mtu = 0; + + re->table = zvrf->table_id; + + ret = rib_add_multipath(AFI_IP6, safi, &p, src_pp, re); + /* Stats */ + if (ret > 0) + client->v6_route_add_cnt++; + else if (ret < 0) + client->v6_route_upd8_cnt++; + + return; + +stream_failure: + nexthops_free(re->ng.nexthop); + XFREE(MTYPE_RE, re); +} + +/* Zebra server IPv6 prefix delete function. */ +static void zread_ipv6_delete(ZAPI_HANDLER_ARGS) +{ + struct stream *s; + struct zapi_ipv6 api; + struct prefix p; + struct prefix_ipv6 src_p, *src_pp; + + s = msg; + + /* Type, flags, message. */ + STREAM_GETC(s, api.type); + STREAM_GETW(s, api.instance); + STREAM_GETL(s, api.flags); + STREAM_GETC(s, api.message); + STREAM_GETW(s, api.safi); + + /* IPv4 prefix. */ + memset(&p, 0, sizeof(struct prefix)); + p.family = AF_INET6; + STREAM_GETC(s, p.prefixlen); + STREAM_GET(&p.u.prefix6, s, PSIZE(p.prefixlen)); + + if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) { + memset(&src_p, 0, sizeof(struct prefix_ipv6)); + src_p.family = AF_INET6; + STREAM_GETC(s, src_p.prefixlen); + STREAM_GET(&src_p.prefix, s, PSIZE(src_p.prefixlen)); + src_pp = &src_p; + } else + src_pp = NULL; + + rib_delete(AFI_IP6, api.safi, zvrf_id(zvrf), api.type, api.instance, + api.flags, &p, src_pp, NULL, client->rtm_table, 0, false, + NULL); + + client->v6_route_del_cnt++; + +stream_failure: + return; +} + +/* Register zebra server router-id information. Send current router-id */ +static void zread_router_id_add(ZAPI_HANDLER_ARGS) +{ + struct prefix p; + + /* Router-id information is needed. */ + vrf_bitmap_set(client->ridinfo, zvrf_id(zvrf)); + + router_id_get(&p, zvrf_id(zvrf)); + + zsend_router_id_update(client, &p, zvrf_id(zvrf)); +} + +/* Unregister zebra server router-id information. */ +static void zread_router_id_delete(ZAPI_HANDLER_ARGS) +{ + vrf_bitmap_unset(client->ridinfo, zvrf_id(zvrf)); +} + +static void zsend_capabilities(struct zserv *client, struct zebra_vrf *zvrf) +{ + struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, ZEBRA_CAPABILITIES, zvrf->vrf->vrf_id); + stream_putc(s, mpls_enabled); + stream_putl(s, multipath_num); + + stream_putw_at(s, 0, stream_get_endp(s)); + zebra_server_send_message(client, s); +} + +/* Tie up route-type and client->sock */ +static void zread_hello(ZAPI_HANDLER_ARGS) +{ + /* type of protocol (lib/zebra.h) */ + uint8_t proto; + unsigned short instance; + uint8_t notify; + + STREAM_GETC(msg, proto); + STREAM_GETW(msg, instance); + STREAM_GETC(msg, notify); + if (notify) + client->notify_owner = true; + + /* accept only dynamic routing protocols */ + if ((proto < ZEBRA_ROUTE_MAX) && (proto > ZEBRA_ROUTE_STATIC)) { + zlog_notice( + "client %d says hello and bids fair to announce only %s routes vrf=%u", + client->sock, zebra_route_string(proto), + zvrf->vrf->vrf_id); + if (instance) + zlog_notice("client protocol instance %d", instance); + + client->proto = proto; + client->instance = instance; + } + + zsend_capabilities(client, zvrf); +stream_failure: + return; +} + +/* Unregister all information in a VRF. */ +static void zread_vrf_unregister(ZAPI_HANDLER_ARGS) +{ + int i; + afi_t afi; + + for (afi = AFI_IP; afi < AFI_MAX; afi++) + for (i = 0; i < ZEBRA_ROUTE_MAX; i++) + vrf_bitmap_unset(client->redist[afi][i], zvrf_id(zvrf)); + vrf_bitmap_unset(client->redist_default, zvrf_id(zvrf)); + vrf_bitmap_unset(client->ifinfo, zvrf_id(zvrf)); + vrf_bitmap_unset(client->ridinfo, zvrf_id(zvrf)); +} + +static void zread_mpls_labels(ZAPI_HANDLER_ARGS) +{ + struct stream *s; + enum lsp_types_t type; + struct prefix prefix; + enum nexthop_types_t gtype; + union g_addr gate; + ifindex_t ifindex; + mpls_label_t in_label, out_label; + uint8_t distance; + + /* Get input stream. */ + s = msg; + + /* Get data. */ + STREAM_GETC(s, type); + STREAM_GETL(s, prefix.family); + switch (prefix.family) { + case AF_INET: + STREAM_GET(&prefix.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN); + STREAM_GETC(s, prefix.prefixlen); + if (prefix.prefixlen > IPV4_MAX_BITLEN) { + zlog_warn( + "%s: Specified prefix length %d is greater than a v4 address can support", + __PRETTY_FUNCTION__, prefix.prefixlen); + return; + } + STREAM_GET(&gate.ipv4.s_addr, s, IPV4_MAX_BYTELEN); + break; + case AF_INET6: + STREAM_GET(&prefix.u.prefix6, s, 16); + STREAM_GETC(s, prefix.prefixlen); + if (prefix.prefixlen > IPV6_MAX_BITLEN) { + zlog_warn( + "%s: Specified prefix length %d is greater than a v6 address can support", + __PRETTY_FUNCTION__, prefix.prefixlen); + return; + } + STREAM_GET(&gate.ipv6, s, 16); + break; + default: + zlog_warn("%s: Specified AF %d is not supported for this call", + __PRETTY_FUNCTION__, prefix.family); + return; + } + STREAM_GETL(s, ifindex); + STREAM_GETC(s, distance); + STREAM_GETL(s, in_label); + STREAM_GETL(s, out_label); + + switch (prefix.family) { + case AF_INET: + if (ifindex) + gtype = NEXTHOP_TYPE_IPV4_IFINDEX; + else + gtype = NEXTHOP_TYPE_IPV4; + break; + case AF_INET6: + if (ifindex) + gtype = NEXTHOP_TYPE_IPV6_IFINDEX; + else + gtype = NEXTHOP_TYPE_IPV6; + break; + default: + return; + } + + if (!mpls_enabled) + return; + + if (hdr->command == ZEBRA_MPLS_LABELS_ADD) { + mpls_lsp_install(zvrf, type, in_label, out_label, gtype, &gate, + ifindex); + mpls_ftn_update(1, zvrf, type, &prefix, gtype, &gate, ifindex, + distance, out_label); + } else if (hdr->command == ZEBRA_MPLS_LABELS_DELETE) { + mpls_lsp_uninstall(zvrf, type, in_label, gtype, &gate, ifindex); + mpls_ftn_update(0, zvrf, type, &prefix, gtype, &gate, ifindex, + distance, out_label); + } +stream_failure: + return; +} + +/* Send response to a table manager connect request to client */ +static void zread_table_manager_connect(struct zserv *client, + struct stream *msg, vrf_id_t vrf_id) +{ + struct stream *s; + uint8_t proto; + uint16_t instance; + + s = msg; + + /* Get data. */ + STREAM_GETC(s, proto); + STREAM_GETW(s, instance); + + /* accept only dynamic routing protocols */ + if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) { + zlog_err("client %d has wrong protocol %s", client->sock, + zebra_route_string(proto)); + zsend_table_manager_connect_response(client, vrf_id, 1); + return; + } + zlog_notice("client %d with vrf %u instance %u connected as %s", + client->sock, vrf_id, instance, zebra_route_string(proto)); + client->proto = proto; + client->instance = instance; + + /* + * Release previous labels of same protocol and instance. + * This is done in case it restarted from an unexpected shutdown. + */ + release_daemon_table_chunks(proto, instance); + + zsend_table_manager_connect_response(client, vrf_id, 0); + +stream_failure: + return; +} + +static void zread_label_manager_connect(struct zserv *client, + struct stream *msg, vrf_id_t vrf_id) +{ + struct stream *s; + /* type of protocol (lib/zebra.h) */ + uint8_t proto; + unsigned short instance; + + /* Get input stream. */ + s = msg; + + /* Get data. */ + STREAM_GETC(s, proto); + STREAM_GETW(s, instance); + + /* accept only dynamic routing protocols */ + if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) { + zlog_err("client %d has wrong protocol %s", client->sock, + zebra_route_string(proto)); + zsend_label_manager_connect_response(client, vrf_id, 1); + return; + } + zlog_notice("client %d with vrf %u instance %u connected as %s", + client->sock, vrf_id, instance, zebra_route_string(proto)); + client->proto = proto; + client->instance = instance; + + /* + Release previous labels of same protocol and instance. + This is done in case it restarted from an unexpected shutdown. + */ + release_daemon_label_chunks(proto, instance); + + zlog_debug( + " Label Manager client connected: sock %d, proto %s, vrf %u instance %u", + client->sock, zebra_route_string(proto), vrf_id, instance); + /* send response back */ + zsend_label_manager_connect_response(client, vrf_id, 0); + +stream_failure: + return; +} + +static void zread_get_label_chunk(struct zserv *client, struct stream *msg, + vrf_id_t vrf_id) +{ + struct stream *s; + uint8_t keep; + uint32_t size; + struct label_manager_chunk *lmc; + + /* Get input stream. */ + s = msg; + + /* Get data. */ + STREAM_GETC(s, keep); + STREAM_GETL(s, size); + + lmc = assign_label_chunk(client->proto, client->instance, keep, size); + if (!lmc) + zlog_err("%s: Unable to assign Label Chunk of size %u", + __func__, size); + else + zlog_debug("Assigned Label Chunk %u - %u to %u", lmc->start, + lmc->end, keep); + /* send response back */ + zsend_assign_label_chunk_response(client, vrf_id, lmc); + +stream_failure: + return; +} + +static void zread_release_label_chunk(struct zserv *client, struct stream *msg) +{ + struct stream *s; + uint32_t start, end; + + /* Get input stream. */ + s = msg; + + /* Get data. */ + STREAM_GETL(s, start); + STREAM_GETL(s, end); + + release_label_chunk(client->proto, client->instance, start, end); + +stream_failure: + return; +} +static void zread_label_manager_request(ZAPI_HANDLER_ARGS) +{ + /* to avoid sending other messages like ZERBA_INTERFACE_UP */ + if (hdr->command == ZEBRA_LABEL_MANAGER_CONNECT) + client->is_synchronous = 1; + + /* external label manager */ + if (lm_is_external) + zread_relay_label_manager_request(hdr->command, client, + zvrf_id(zvrf)); + /* this is a label manager */ + else { + if (hdr->command == ZEBRA_LABEL_MANAGER_CONNECT) + zread_label_manager_connect(client, msg, zvrf_id(zvrf)); + else { + /* Sanity: don't allow 'unidentified' requests */ + if (!client->proto) { + zlog_err( + "Got label request from an unidentified client"); + return; + } + if (hdr->command == ZEBRA_GET_LABEL_CHUNK) + zread_get_label_chunk(client, msg, + zvrf_id(zvrf)); + else if (hdr->command == ZEBRA_RELEASE_LABEL_CHUNK) + zread_release_label_chunk(client, msg); + } + } +} + +static void zread_get_table_chunk(struct zserv *client, struct stream *msg, + vrf_id_t vrf_id) +{ + struct stream *s; + uint32_t size; + struct table_manager_chunk *tmc; + + /* Get input stream. */ + s = msg; + + /* Get data. */ + STREAM_GETL(s, size); + + tmc = assign_table_chunk(client->proto, client->instance, size); + if (!tmc) + zlog_err("%s: Unable to assign Table Chunk of size %u", + __func__, size); + else + zlog_debug("Assigned Table Chunk %u - %u", tmc->start, + tmc->end); + /* send response back */ + zsend_assign_table_chunk_response(client, vrf_id, tmc); + +stream_failure: + return; +} + +static void zread_release_table_chunk(struct zserv *client, struct stream *msg) +{ + struct stream *s; + uint32_t start, end; + + /* Get input stream. */ + s = msg; + + /* Get data. */ + STREAM_GETL(s, start); + STREAM_GETL(s, end); + + release_table_chunk(client->proto, client->instance, start, end); + +stream_failure: + return; +} + +static void zread_table_manager_request(ZAPI_HANDLER_ARGS) +{ + /* to avoid sending other messages like ZERBA_INTERFACE_UP */ + if (hdr->command == ZEBRA_TABLE_MANAGER_CONNECT) + zread_table_manager_connect(client, msg, zvrf_id(zvrf)); + else { + /* Sanity: don't allow 'unidentified' requests */ + if (!client->proto) { + zlog_err( + "Got table request from an unidentified client"); + return; + } + if (hdr->command == ZEBRA_GET_TABLE_CHUNK) + zread_get_table_chunk(client, msg, zvrf_id(zvrf)); + else if (hdr->command == ZEBRA_RELEASE_TABLE_CHUNK) + zread_release_table_chunk(client, msg); + } +} + +static void zread_pseudowire(ZAPI_HANDLER_ARGS) +{ + struct stream *s; + char ifname[IF_NAMESIZE]; + ifindex_t ifindex; + int type; + int af; + union g_addr nexthop; + uint32_t local_label; + uint32_t remote_label; + uint8_t flags; + union pw_protocol_fields data; + uint8_t protocol; + struct zebra_pw *pw; + + /* Get input stream. */ + s = msg; + + /* Get data. */ + STREAM_GET(ifname, s, IF_NAMESIZE); + STREAM_GETL(s, ifindex); + STREAM_GETL(s, type); + STREAM_GETL(s, af); + switch (af) { + case AF_INET: + STREAM_GET(&nexthop.ipv4.s_addr, s, IPV4_MAX_BYTELEN); + break; + case AF_INET6: + STREAM_GET(&nexthop.ipv6, s, 16); + break; + default: + return; + } + STREAM_GETL(s, local_label); + STREAM_GETL(s, remote_label); + STREAM_GETC(s, flags); + STREAM_GET(&data, s, sizeof(data)); + protocol = client->proto; + + pw = zebra_pw_find(zvrf, ifname); + switch (hdr->command) { + case ZEBRA_PW_ADD: + if (pw) { + zlog_warn("%s: pseudowire %s already exists [%s]", + __func__, ifname, + zserv_command_string(hdr->command)); + return; + } + + zebra_pw_add(zvrf, ifname, protocol, client); + break; + case ZEBRA_PW_DELETE: + if (!pw) { + zlog_warn("%s: pseudowire %s not found [%s]", __func__, + ifname, zserv_command_string(hdr->command)); + return; + } + + zebra_pw_del(zvrf, pw); + break; + case ZEBRA_PW_SET: + case ZEBRA_PW_UNSET: + if (!pw) { + zlog_warn("%s: pseudowire %s not found [%s]", __func__, + ifname, zserv_command_string(hdr->command)); + return; + } + + switch (hdr->command) { + case ZEBRA_PW_SET: + pw->enabled = 1; + break; + case ZEBRA_PW_UNSET: + pw->enabled = 0; + break; + } + + zebra_pw_change(pw, ifindex, type, af, &nexthop, local_label, + remote_label, flags, &data); + break; + } + +stream_failure: + return; +} + +static void zread_interface_set_master(ZAPI_HANDLER_ARGS) +{ + struct interface *master; + struct interface *slave; + struct stream *s = msg; + int ifindex; + vrf_id_t vrf_id; + + STREAM_GETL(s, vrf_id); + STREAM_GETL(s, ifindex); + master = if_lookup_by_index(ifindex, vrf_id); + + STREAM_GETL(s, vrf_id); + STREAM_GETL(s, ifindex); + slave = if_lookup_by_index(ifindex, vrf_id); + + if (!master || !slave) + return; + + kernel_interface_set_master(master, slave); + +stream_failure: + return; +} + + +static void zread_vrf_label(ZAPI_HANDLER_ARGS) +{ + struct interface *ifp; + mpls_label_t nlabel; + afi_t afi; + struct stream *s; + struct zebra_vrf *def_zvrf; + enum lsp_types_t ltype; + + s = msg; + STREAM_GETL(s, nlabel); + STREAM_GETC(s, afi); + if (nlabel == zvrf->label[afi]) { + /* + * Nothing to do here move along + */ + return; + } + + STREAM_GETC(s, ltype); + + if (zvrf->vrf->vrf_id != VRF_DEFAULT) + ifp = if_lookup_by_name(zvrf->vrf->name, zvrf->vrf->vrf_id); + else + ifp = if_lookup_by_name("lo", VRF_DEFAULT); + + if (!ifp) { + zlog_debug("Unable to find specified Interface for %s", + zvrf->vrf->name); + return; + } + + def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); + + if (zvrf->label[afi] != MPLS_LABEL_NONE) { + afi_t scrubber; + bool really_remove; + + really_remove = true; + for (scrubber = AFI_IP; scrubber < AFI_MAX; scrubber++) { + if (scrubber == afi) + continue; + + if (zvrf->label[scrubber] == MPLS_LABEL_NONE) + continue; + + if (zvrf->label[afi] == zvrf->label[scrubber]) { + really_remove = false; + break; + } + } + + if (really_remove) + mpls_lsp_uninstall(def_zvrf, ltype, zvrf->label[afi], + NEXTHOP_TYPE_IFINDEX, NULL, + ifp->ifindex); + } + + if (nlabel != MPLS_LABEL_NONE) + mpls_lsp_install(def_zvrf, ltype, nlabel, + MPLS_LABEL_IMPLICIT_NULL, NEXTHOP_TYPE_IFINDEX, + NULL, ifp->ifindex); + + zvrf->label[afi] = nlabel; +stream_failure: + return; +} + +static inline void zread_rule(ZAPI_HANDLER_ARGS) +{ + struct zebra_pbr_rule zpr; + struct stream *s; + uint32_t total, i; + ifindex_t ifindex; + + s = msg; + STREAM_GETL(s, total); + + for (i = 0; i < total; i++) { + memset(&zpr, 0, sizeof(zpr)); + + zpr.sock = client->sock; + zpr.rule.vrf_id = hdr->vrf_id; + STREAM_GETL(s, zpr.rule.seq); + STREAM_GETL(s, zpr.rule.priority); + STREAM_GETL(s, zpr.rule.unique); + STREAM_GETC(s, zpr.rule.filter.src_ip.family); + STREAM_GETC(s, zpr.rule.filter.src_ip.prefixlen); + STREAM_GET(&zpr.rule.filter.src_ip.u.prefix, s, + prefix_blen(&zpr.rule.filter.src_ip)); + STREAM_GETW(s, zpr.rule.filter.src_port); + STREAM_GETC(s, zpr.rule.filter.dst_ip.family); + STREAM_GETC(s, zpr.rule.filter.dst_ip.prefixlen); + STREAM_GET(&zpr.rule.filter.dst_ip.u.prefix, s, + prefix_blen(&zpr.rule.filter.dst_ip)); + STREAM_GETW(s, zpr.rule.filter.dst_port); + STREAM_GETL(s, zpr.rule.filter.fwmark); + STREAM_GETL(s, zpr.rule.action.table); + STREAM_GETL(s, ifindex); + + if (ifindex) { + zpr.ifp = if_lookup_by_index(ifindex, VRF_UNKNOWN); + if (!zpr.ifp) { + zlog_debug("Failed to lookup ifindex: %u", + ifindex); + return; + } + } + + if (!is_default_prefix(&zpr.rule.filter.src_ip)) + zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_IP; + + if (!is_default_prefix(&zpr.rule.filter.dst_ip)) + zpr.rule.filter.filter_bm |= PBR_FILTER_DST_IP; + + if (zpr.rule.filter.src_port) + zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_PORT; + + if (zpr.rule.filter.dst_port) + zpr.rule.filter.filter_bm |= PBR_FILTER_DST_PORT; + + if (zpr.rule.filter.fwmark) + zpr.rule.filter.filter_bm |= PBR_FILTER_FWMARK; + + if (hdr->command == ZEBRA_RULE_ADD) + zebra_pbr_add_rule(zvrf->zns, &zpr); + else + zebra_pbr_del_rule(zvrf->zns, &zpr); + } + +stream_failure: + return; +} + +static inline void zread_ipset(ZAPI_HANDLER_ARGS) +{ + struct zebra_pbr_ipset zpi; + struct stream *s; + uint32_t total, i; + + s = msg; + STREAM_GETL(s, total); + + for (i = 0; i < total; i++) { + memset(&zpi, 0, sizeof(zpi)); + + zpi.sock = client->sock; + STREAM_GETL(s, zpi.unique); + STREAM_GETL(s, zpi.type); + STREAM_GET(&zpi.ipset_name, s, ZEBRA_IPSET_NAME_SIZE); + + if (hdr->command == ZEBRA_IPSET_CREATE) + zebra_pbr_create_ipset(zvrf->zns, &zpi); + else + zebra_pbr_destroy_ipset(zvrf->zns, &zpi); + } + +stream_failure: + return; +} + +static inline void zread_ipset_entry(ZAPI_HANDLER_ARGS) +{ + struct zebra_pbr_ipset_entry zpi; + struct zebra_pbr_ipset ipset; + struct stream *s; + uint32_t total, i; + + s = msg; + STREAM_GETL(s, total); + + for (i = 0; i < total; i++) { + memset(&zpi, 0, sizeof(zpi)); + memset(&ipset, 0, sizeof(ipset)); + + zpi.sock = client->sock; + STREAM_GETL(s, zpi.unique); + STREAM_GET(&ipset.ipset_name, s, ZEBRA_IPSET_NAME_SIZE); + STREAM_GETC(s, zpi.src.family); + STREAM_GETC(s, zpi.src.prefixlen); + STREAM_GET(&zpi.src.u.prefix, s, prefix_blen(&zpi.src)); + STREAM_GETC(s, zpi.dst.family); + STREAM_GETC(s, zpi.dst.prefixlen); + STREAM_GET(&zpi.dst.u.prefix, s, prefix_blen(&zpi.dst)); + + if (!is_default_prefix(&zpi.src)) + zpi.filter_bm |= PBR_FILTER_SRC_IP; + + if (!is_default_prefix(&zpi.dst)) + zpi.filter_bm |= PBR_FILTER_DST_IP; + + /* calculate backpointer */ + zpi.backpointer = zebra_pbr_lookup_ipset_pername( + zvrf->zns, ipset.ipset_name); + if (hdr->command == ZEBRA_IPSET_ENTRY_ADD) + zebra_pbr_add_ipset_entry(zvrf->zns, &zpi); + else + zebra_pbr_del_ipset_entry(zvrf->zns, &zpi); + } + +stream_failure: + return; +} + +static inline void zread_iptable(ZAPI_HANDLER_ARGS) +{ + struct zebra_pbr_iptable zpi; + struct stream *s; + + s = msg; + + memset(&zpi, 0, sizeof(zpi)); + + zpi.sock = client->sock; + STREAM_GETL(s, zpi.unique); + STREAM_GETL(s, zpi.type); + STREAM_GETL(s, zpi.filter_bm); + STREAM_GETL(s, zpi.action); + STREAM_GETL(s, zpi.fwmark); + STREAM_GET(&zpi.ipset_name, s, ZEBRA_IPSET_NAME_SIZE); + + if (hdr->command == ZEBRA_IPTABLE_ADD) + zebra_pbr_add_iptable(zvrf->zns, &zpi); + else + zebra_pbr_del_iptable(zvrf->zns, &zpi); +stream_failure: + return; +} + +void (*zserv_handlers[])(ZAPI_HANDLER_ARGS) = { + [ZEBRA_ROUTER_ID_ADD] = zread_router_id_add, + [ZEBRA_ROUTER_ID_DELETE] = zread_router_id_delete, + [ZEBRA_INTERFACE_ADD] = zread_interface_add, + [ZEBRA_INTERFACE_DELETE] = zread_interface_delete, + [ZEBRA_ROUTE_ADD] = zread_route_add, + [ZEBRA_ROUTE_DELETE] = zread_route_del, + [ZEBRA_IPV4_ROUTE_ADD] = zread_ipv4_add, + [ZEBRA_IPV4_ROUTE_DELETE] = zread_ipv4_delete, + [ZEBRA_IPV4_ROUTE_IPV6_NEXTHOP_ADD] = zread_ipv4_route_ipv6_nexthop_add, + [ZEBRA_IPV6_ROUTE_ADD] = zread_ipv6_add, + [ZEBRA_IPV6_ROUTE_DELETE] = zread_ipv6_delete, + [ZEBRA_REDISTRIBUTE_ADD] = zebra_redistribute_add, + [ZEBRA_REDISTRIBUTE_DELETE] = zebra_redistribute_delete, + [ZEBRA_REDISTRIBUTE_DEFAULT_ADD] = zebra_redistribute_default_add, + [ZEBRA_REDISTRIBUTE_DEFAULT_DELETE] = zebra_redistribute_default_delete, + [ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB] = zread_ipv4_nexthop_lookup_mrib, + [ZEBRA_HELLO] = zread_hello, + [ZEBRA_NEXTHOP_REGISTER] = zread_rnh_register, + [ZEBRA_NEXTHOP_UNREGISTER] = zread_rnh_unregister, + [ZEBRA_IMPORT_ROUTE_REGISTER] = zread_rnh_register, + [ZEBRA_IMPORT_ROUTE_UNREGISTER] = zread_rnh_unregister, + [ZEBRA_BFD_DEST_UPDATE] = zebra_ptm_bfd_dst_register, + [ZEBRA_BFD_DEST_REGISTER] = zebra_ptm_bfd_dst_register, + [ZEBRA_BFD_DEST_DEREGISTER] = zebra_ptm_bfd_dst_deregister, + [ZEBRA_VRF_UNREGISTER] = zread_vrf_unregister, + [ZEBRA_VRF_LABEL] = zread_vrf_label, + [ZEBRA_BFD_CLIENT_REGISTER] = zebra_ptm_bfd_client_register, +#if defined(HAVE_RTADV) + [ZEBRA_INTERFACE_ENABLE_RADV] = zebra_interface_radv_enable, + [ZEBRA_INTERFACE_DISABLE_RADV] = zebra_interface_radv_disable, +#else + [ZEBRA_INTERFACE_ENABLE_RADV] = NULL, + [ZEBRA_INTERFACE_DISABLE_RADV] = NULL, +#endif + [ZEBRA_MPLS_LABELS_ADD] = zread_mpls_labels, + [ZEBRA_MPLS_LABELS_DELETE] = zread_mpls_labels, + [ZEBRA_IPMR_ROUTE_STATS] = zebra_ipmr_route_stats, + [ZEBRA_LABEL_MANAGER_CONNECT] = zread_label_manager_request, + [ZEBRA_GET_LABEL_CHUNK] = zread_label_manager_request, + [ZEBRA_RELEASE_LABEL_CHUNK] = zread_label_manager_request, + [ZEBRA_FEC_REGISTER] = zread_fec_register, + [ZEBRA_FEC_UNREGISTER] = zread_fec_unregister, + [ZEBRA_ADVERTISE_DEFAULT_GW] = zebra_vxlan_advertise_gw_macip, + [ZEBRA_ADVERTISE_SUBNET] = zebra_vxlan_advertise_subnet, + [ZEBRA_ADVERTISE_ALL_VNI] = zebra_vxlan_advertise_all_vni, + [ZEBRA_REMOTE_VTEP_ADD] = zebra_vxlan_remote_vtep_add, + [ZEBRA_REMOTE_VTEP_DEL] = zebra_vxlan_remote_vtep_del, + [ZEBRA_REMOTE_MACIP_ADD] = zebra_vxlan_remote_macip_add, + [ZEBRA_REMOTE_MACIP_DEL] = zebra_vxlan_remote_macip_del, + [ZEBRA_INTERFACE_SET_MASTER] = zread_interface_set_master, + [ZEBRA_PW_ADD] = zread_pseudowire, + [ZEBRA_PW_DELETE] = zread_pseudowire, + [ZEBRA_PW_SET] = zread_pseudowire, + [ZEBRA_PW_UNSET] = zread_pseudowire, + [ZEBRA_RULE_ADD] = zread_rule, + [ZEBRA_RULE_DELETE] = zread_rule, + [ZEBRA_TABLE_MANAGER_CONNECT] = zread_table_manager_request, + [ZEBRA_GET_TABLE_CHUNK] = zread_table_manager_request, + [ZEBRA_RELEASE_TABLE_CHUNK] = zread_table_manager_request, + [ZEBRA_IPSET_CREATE] = zread_ipset, + [ZEBRA_IPSET_DESTROY] = zread_ipset, + [ZEBRA_IPSET_ENTRY_ADD] = zread_ipset_entry, + [ZEBRA_IPSET_ENTRY_DELETE] = zread_ipset_entry, + [ZEBRA_IPTABLE_ADD] = zread_iptable, + [ZEBRA_IPTABLE_DELETE] = zread_iptable, +}; + +void zserv_handle_commands(struct zserv *client, struct zmsghdr *hdr, + struct stream *msg, struct zebra_vrf *zvrf) +{ + if (hdr->command > array_size(zserv_handlers) + || zserv_handlers[hdr->command] == NULL) + zlog_info("Zebra received unknown command %d", hdr->command); + else + zserv_handlers[hdr->command](client, hdr, msg, zvrf); + + stream_free(msg); +} |