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sharp_zebra.c
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Zebra connect code.
* Copyright (C) Cumulus Networks, Inc.
* Donald Sharp
*/
#include <zebra.h>
#include "frrevent.h"
#include "command.h"
#include "network.h"
#include "prefix.h"
#include "stream.h"
#include "memory.h"
#include "zclient.h"
#include "nexthop.h"
#include "nexthop_group.h"
#include "link_state.h"
#include "tc.h"
#include "sharp_globals.h"
#include "sharp_nht.h"
#include "sharp_zebra.h"
/* Zebra structure to hold current status. */
struct zclient *zclient = NULL;
/* For registering threads. */
extern struct event_loop *master;
/* Privs info */
extern struct zebra_privs_t sharp_privs;
DEFINE_MTYPE_STATIC(SHARPD, ZC, "Test zclients");
/* Struct to hold list of test zclients */
struct sharp_zclient {
struct sharp_zclient *prev;
struct sharp_zclient *next;
struct zclient *client;
};
/* Head of test zclient list */
static struct sharp_zclient *sharp_clients_head;
static int sharp_opaque_handler(ZAPI_CALLBACK_ARGS);
/* Utility to add a test zclient struct to the list */
static void add_zclient(struct zclient *client)
{
struct sharp_zclient *node;
node = XCALLOC(MTYPE_ZC, sizeof(struct sharp_zclient));
node->client = client;
node->next = sharp_clients_head;
if (sharp_clients_head)
sharp_clients_head->prev = node;
sharp_clients_head = node;
}
/* Interface addition message from zebra. */
static int sharp_ifp_create(struct interface *ifp)
{
return 0;
}
static int sharp_ifp_destroy(struct interface *ifp)
{
return 0;
}
static int interface_address_add(ZAPI_CALLBACK_ARGS)
{
zebra_interface_address_read(cmd, zclient->ibuf, vrf_id);
return 0;
}
static int interface_address_delete(ZAPI_CALLBACK_ARGS)
{
struct connected *c;
c = zebra_interface_address_read(cmd, zclient->ibuf, vrf_id);
if (!c)
return 0;
connected_free(&c);
return 0;
}
static int sharp_ifp_up(struct interface *ifp)
{
return 0;
}
static int sharp_ifp_down(struct interface *ifp)
{
return 0;
}
int sharp_install_lsps_helper(bool install_p, bool update_p,
const struct prefix *p, uint8_t type,
int instance, uint32_t in_label,
const struct nexthop_group *nhg,
const struct nexthop_group *backup_nhg)
{
struct zapi_labels zl = {};
struct zapi_nexthop *znh;
const struct nexthop *nh;
int i, cmd, ret;
zl.type = ZEBRA_LSP_SHARP;
zl.local_label = in_label;
if (p) {
SET_FLAG(zl.message, ZAPI_LABELS_FTN);
prefix_copy(&zl.route.prefix, p);
zl.route.type = type;
zl.route.instance = instance;
}
/* List of nexthops is optional for delete */
i = 0;
if (nhg) {
for (ALL_NEXTHOPS_PTR(nhg, nh)) {
znh = &zl.nexthops[i];
/* Must have labels to be useful */
if (nh->nh_label == NULL ||
nh->nh_label->num_labels == 0)
continue;
if (nh->type == NEXTHOP_TYPE_IFINDEX ||
nh->type == NEXTHOP_TYPE_BLACKHOLE)
/* Hmm - can't really deal with these types */
continue;
ret = zapi_nexthop_from_nexthop(znh, nh);
if (ret < 0)
return -1;
i++;
if (i >= MULTIPATH_NUM)
break;
}
}
/* Whoops - no nexthops isn't very useful for install */
if (i == 0 && install_p)
return -1;
zl.nexthop_num = i;
/* Add optional backup nexthop info. Since these are used by index,
* we can't just skip over an invalid backup nexthop: we will
* invalidate the entire operation.
*/
if (backup_nhg != NULL) {
i = 0;
for (ALL_NEXTHOPS_PTR(backup_nhg, nh)) {
znh = &zl.backup_nexthops[i];
/* Must have labels to be useful */
if (nh->nh_label == NULL ||
nh->nh_label->num_labels == 0)
return -1;
if (nh->type == NEXTHOP_TYPE_IFINDEX ||
nh->type == NEXTHOP_TYPE_BLACKHOLE)
/* Hmm - can't really deal with these types */
return -1;
ret = zapi_nexthop_from_nexthop(znh, nh);
if (ret < 0)
return -1;
i++;
if (i >= MULTIPATH_NUM)
break;
}
if (i > 0)
SET_FLAG(zl.message, ZAPI_LABELS_HAS_BACKUPS);
zl.backup_nexthop_num = i;
}
if (install_p) {
if (update_p)
cmd = ZEBRA_MPLS_LABELS_REPLACE;
else
cmd = ZEBRA_MPLS_LABELS_ADD;
} else {
cmd = ZEBRA_MPLS_LABELS_DELETE;
}
if (zebra_send_mpls_labels(zclient, cmd, &zl) == ZCLIENT_SEND_FAILURE)
return -1;
return 0;
}
enum where_to_restart {
SHARP_INSTALL_ROUTES_RESTART,
SHARP_DELETE_ROUTES_RESTART,
};
struct buffer_delay {
struct prefix p;
uint32_t count;
uint32_t routes;
vrf_id_t vrf_id;
uint8_t instance;
uint32_t nhgid;
uint32_t flags;
const struct nexthop_group *nhg;
const struct nexthop_group *backup_nhg;
enum where_to_restart restart;
char *opaque;
} wb;
/*
* route_add - Encodes a route to zebra
*
* This function returns true when the route was buffered
* by the underlying stream system
*/
static bool route_add(const struct prefix *p, vrf_id_t vrf_id, uint8_t instance,
uint32_t nhgid, const struct nexthop_group *nhg,
const struct nexthop_group *backup_nhg, uint32_t flags,
char *opaque)
{
struct zapi_route api;
struct zapi_nexthop *api_nh;
struct nexthop *nh;
int i = 0;
memset(&api, 0, sizeof(api));
api.vrf_id = vrf_id;
api.type = ZEBRA_ROUTE_SHARP;
api.instance = instance;
api.safi = SAFI_UNICAST;
memcpy(&api.prefix, p, sizeof(*p));
api.flags = flags;
/* Only send via ID if nhgroup has been successfully installed */
if (nhgid && sharp_nhgroup_id_is_installed(nhgid)) {
zapi_route_set_nhg_id(&api, &nhgid);
} else {
SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
for (ALL_NEXTHOPS_PTR(nhg, nh)) {
/* Check if we set a VNI label */
if (nh->nh_label &&
(nh->nh_label_type == ZEBRA_LSP_EVPN))
SET_FLAG(api.flags, ZEBRA_FLAG_EVPN_ROUTE);
api_nh = &api.nexthops[i];
zapi_nexthop_from_nexthop(api_nh, nh);
i++;
}
api.nexthop_num = i;
}
/* Include backup nexthops, if present */
if (backup_nhg && backup_nhg->nexthop) {
SET_FLAG(api.message, ZAPI_MESSAGE_BACKUP_NEXTHOPS);
i = 0;
for (ALL_NEXTHOPS_PTR(backup_nhg, nh)) {
api_nh = &api.backup_nexthops[i];
zapi_backup_nexthop_from_nexthop(api_nh, nh);
i++;
}
api.backup_nexthop_num = i;
}
if (strlen(opaque)) {
SET_FLAG(api.message, ZAPI_MESSAGE_OPAQUE);
api.opaque.length = strlen(opaque) + 1;
assert(api.opaque.length <= ZAPI_MESSAGE_OPAQUE_LENGTH);
memcpy(api.opaque.data, opaque, api.opaque.length);
}
if (zclient_route_send(ZEBRA_ROUTE_ADD, zclient, &api) ==
ZCLIENT_SEND_BUFFERED)
return true;
else
return false;
}
/*
* route_delete - Encodes a route for deletion to zebra
*
* This function returns true when the route sent was
* buffered by the underlying stream system.
*/
static bool route_delete(struct prefix *p, vrf_id_t vrf_id, uint8_t instance)
{
struct zapi_route api;
memset(&api, 0, sizeof(api));
api.vrf_id = vrf_id;
api.type = ZEBRA_ROUTE_SHARP;
api.safi = SAFI_UNICAST;
api.instance = instance;
memcpy(&api.prefix, p, sizeof(*p));
if (zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api) ==
ZCLIENT_SEND_BUFFERED)
return true;
else
return false;
}
static void sharp_install_routes_restart(struct prefix *p, uint32_t count,
vrf_id_t vrf_id, uint8_t instance,
uint32_t nhgid,
const struct nexthop_group *nhg,
const struct nexthop_group *backup_nhg,
uint32_t routes, uint32_t flags,
char *opaque)
{
uint32_t temp, i;
bool v4 = false;
if (p->family == AF_INET) {
v4 = true;
temp = ntohl(p->u.prefix4.s_addr);
} else
temp = ntohl(p->u.val32[3]);
for (i = count; i < routes; i++) {
bool buffered = route_add(p, vrf_id, (uint8_t)instance, nhgid,
nhg, backup_nhg, flags, opaque);
if (v4)
p->u.prefix4.s_addr = htonl(++temp);
else
p->u.val32[3] = htonl(++temp);
if (buffered) {
wb.p = *p;
wb.count = i + 1;
wb.routes = routes;
wb.vrf_id = vrf_id;
wb.instance = instance;
wb.nhgid = nhgid;
wb.nhg = nhg;
wb.flags = flags;
wb.backup_nhg = backup_nhg;
wb.opaque = opaque;
wb.restart = SHARP_INSTALL_ROUTES_RESTART;
return;
}
}
}
void sharp_install_routes_helper(struct prefix *p, vrf_id_t vrf_id,
uint8_t instance, uint32_t nhgid,
const struct nexthop_group *nhg,
const struct nexthop_group *backup_nhg,
uint32_t routes, uint32_t flags, char *opaque)
{
zlog_debug("Inserting %u routes", routes);
/* Only use backup route/nexthops if present */
if (backup_nhg && (backup_nhg->nexthop == NULL))
backup_nhg = NULL;
monotime(&sg.r.t_start);
sharp_install_routes_restart(p, 0, vrf_id, instance, nhgid, nhg,
backup_nhg, routes, flags, opaque);
}
static void sharp_remove_routes_restart(struct prefix *p, uint32_t count,
vrf_id_t vrf_id, uint8_t instance,
uint32_t routes)
{
uint32_t temp, i;
bool v4 = false;
if (p->family == AF_INET) {
v4 = true;
temp = ntohl(p->u.prefix4.s_addr);
} else
temp = ntohl(p->u.val32[3]);
for (i = count; i < routes; i++) {
bool buffered = route_delete(p, vrf_id, (uint8_t)instance);
if (v4)
p->u.prefix4.s_addr = htonl(++temp);
else
p->u.val32[3] = htonl(++temp);
if (buffered) {
wb.p = *p;
wb.count = i + 1;
wb.vrf_id = vrf_id;
wb.instance = instance;
wb.routes = routes;
wb.restart = SHARP_DELETE_ROUTES_RESTART;
return;
}
}
}
void sharp_remove_routes_helper(struct prefix *p, vrf_id_t vrf_id,
uint8_t instance, uint32_t routes)
{
zlog_debug("Removing %u routes", routes);
monotime(&sg.r.t_start);
sharp_remove_routes_restart(p, 0, vrf_id, instance, routes);
}
static void handle_repeated(bool installed)
{
struct prefix p = sg.r.orig_prefix;
sg.r.repeat--;
if (sg.r.repeat <= 0)
return;
if (installed) {
sg.r.removed_routes = 0;
sharp_remove_routes_helper(&p, sg.r.vrf_id, sg.r.inst,
sg.r.total_routes);
}
if (!installed) {
sg.r.installed_routes = 0;
sharp_install_routes_helper(
&p, sg.r.vrf_id, sg.r.inst, sg.r.nhgid,
&sg.r.nhop_group, &sg.r.backup_nhop_group,
sg.r.total_routes, sg.r.flags, sg.r.opaque);
}
}
static void sharp_zclient_buffer_ready(void)
{
switch (wb.restart) {
case SHARP_INSTALL_ROUTES_RESTART:
sharp_install_routes_restart(
&wb.p, wb.count, wb.vrf_id, wb.instance, wb.nhgid,
wb.nhg, wb.backup_nhg, wb.routes, wb.flags, wb.opaque);
return;
case SHARP_DELETE_ROUTES_RESTART:
sharp_remove_routes_restart(&wb.p, wb.count, wb.vrf_id,
wb.instance, wb.routes);
return;
}
}
static int route_notify_owner(ZAPI_CALLBACK_ARGS)
{
struct timeval r;
struct prefix p;
enum zapi_route_notify_owner note;
uint32_t table;
if (!zapi_route_notify_decode(zclient->ibuf, &p, &table, ¬e, NULL,
NULL))
return -1;
switch (note) {
case ZAPI_ROUTE_INSTALLED:
sg.r.installed_routes++;
if (sg.r.total_routes == sg.r.installed_routes) {
monotime(&sg.r.t_end);
timersub(&sg.r.t_end, &sg.r.t_start, &r);
zlog_debug("Installed All Items %jd.%ld",
(intmax_t)r.tv_sec, (long)r.tv_usec);
handle_repeated(true);
}
break;
case ZAPI_ROUTE_FAIL_INSTALL:
zlog_debug("Failed install of route");
break;
case ZAPI_ROUTE_BETTER_ADMIN_WON:
zlog_debug("Better Admin Distance won over us");
break;
case ZAPI_ROUTE_REMOVED:
sg.r.removed_routes++;
if (sg.r.total_routes == sg.r.removed_routes) {
monotime(&sg.r.t_end);
timersub(&sg.r.t_end, &sg.r.t_start, &r);
zlog_debug("Removed all Items %jd.%ld",
(intmax_t)r.tv_sec, (long)r.tv_usec);
handle_repeated(false);
}
break;
case ZAPI_ROUTE_REMOVE_FAIL:
zlog_debug("Route removal Failure");
break;
}
return 0;
}
static void zebra_connected(struct zclient *zclient)
{
zebra_route_notify_send(ZEBRA_ROUTE_NOTIFY_REQUEST, zclient, true);
zclient_send_reg_requests(zclient, VRF_DEFAULT);
/*
* Do not actually turn this on yet
* This is just the start of the infrastructure needed here
* This can be fixed at a later time.
*
* zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient, AFI_IP,
* ZEBRA_ROUTE_ALL, 0, VRF_DEFAULT);
*/
}
void vrf_label_add(vrf_id_t vrf_id, afi_t afi, mpls_label_t label)
{
zclient_send_vrf_label(zclient, vrf_id, afi, label, ZEBRA_LSP_SHARP);
}
void nhg_add(uint32_t id, const struct nexthop_group *nhg,
const struct nexthop_group *backup_nhg)
{
struct zapi_nhg api_nhg = {};
struct zapi_nexthop *api_nh;
struct nexthop *nh;
bool is_valid = true;
api_nhg.id = id;
api_nhg.resilience = nhg->nhgr;
for (ALL_NEXTHOPS_PTR(nhg, nh)) {
if (api_nhg.nexthop_num >= MULTIPATH_NUM) {
zlog_warn(
"%s: number of nexthops greater than max multipath size, truncating",
__func__);
break;
}
/* Unresolved nexthops will lead to failure - only send
* nexthops that zebra will consider valid.
*/
if (nh->ifindex == 0)
continue;
api_nh = &api_nhg.nexthops[api_nhg.nexthop_num];
zapi_nexthop_from_nexthop(api_nh, nh);
api_nhg.nexthop_num++;
}
if (api_nhg.nexthop_num == 0) {
if (sharp_nhgroup_id_is_installed(id)) {
zlog_debug("%s: nhg %u: no nexthops, deleting nexthop group", __func__,
id);
zclient_nhg_send(zclient, ZEBRA_NHG_DEL, &api_nhg);
return;
}
zlog_debug("%s: nhg %u not sent: no valid nexthops", __func__,
id);
is_valid = false;
goto done;
}
if (backup_nhg) {
for (ALL_NEXTHOPS_PTR(backup_nhg, nh)) {
if (api_nhg.backup_nexthop_num >= MULTIPATH_NUM) {
zlog_warn(
"%s: number of backup nexthops greater than max multipath size, truncating",
__func__);
break;
}
/* Unresolved nexthop: will be rejected by zebra.
* That causes a problem, since the primary nexthops
* rely on array indexing into the backup nexthops. If
* that array isn't valid, the backup indexes won't be
* valid.
*/
if (nh->ifindex == 0) {
zlog_debug("%s: nhg %u: invalid backup nexthop",
__func__, id);
is_valid = false;
break;
}
api_nh = &api_nhg.backup_nexthops
[api_nhg.backup_nexthop_num];
zapi_backup_nexthop_from_nexthop(api_nh, nh);
api_nhg.backup_nexthop_num++;
}
}
done:
if (is_valid)
zclient_nhg_send(zclient, ZEBRA_NHG_ADD, &api_nhg);
}
void nhg_del(uint32_t id)
{
struct zapi_nhg api_nhg = {};
api_nhg.id = id;
zclient_nhg_send(zclient, ZEBRA_NHG_DEL, &api_nhg);
}
void sharp_zebra_nexthop_watch(struct prefix *p, vrf_id_t vrf_id, bool import,
bool watch, bool connected)
{
int command;
command = ZEBRA_NEXTHOP_REGISTER;
if (!watch)
command = ZEBRA_NEXTHOP_UNREGISTER;
if (zclient_send_rnh(zclient, command, p, SAFI_UNICAST, connected,
false, vrf_id) == ZCLIENT_SEND_FAILURE)
zlog_warn("%s: Failure to send nexthop to zebra", __func__);
}
static int sharp_debug_nexthops(struct zapi_route *api)
{
int i;
if (api->nexthop_num == 0) {
zlog_debug(" Not installed");
return 0;
}
for (i = 0; i < api->nexthop_num; i++) {
struct zapi_nexthop *znh = &api->nexthops[i];
switch (znh->type) {
case NEXTHOP_TYPE_IPV4_IFINDEX:
case NEXTHOP_TYPE_IPV4:
zlog_debug(
" Nexthop %pI4, type: %d, ifindex: %d, vrf: %d, label_num: %d",
&znh->gate.ipv4.s_addr, znh->type, znh->ifindex,
znh->vrf_id, znh->label_num);
break;
case NEXTHOP_TYPE_IPV6_IFINDEX:
case NEXTHOP_TYPE_IPV6:
zlog_debug(
" Nexthop %pI6, type: %d, ifindex: %d, vrf: %d, label_num: %d",
&znh->gate.ipv6, znh->type, znh->ifindex,
znh->vrf_id, znh->label_num);
break;
case NEXTHOP_TYPE_IFINDEX:
zlog_debug(" Nexthop IFINDEX: %d, ifindex: %d",
znh->type, znh->ifindex);
break;
case NEXTHOP_TYPE_BLACKHOLE:
zlog_debug(" Nexthop blackhole");
break;
}
}
return i;
}
static void sharp_nexthop_update(struct vrf *vrf, struct prefix *matched,
struct zapi_route *nhr)
{
struct sharp_nh_tracker *nht;
zlog_debug("Received update for %pFX actual match: %pFX metric: %u",
matched, &nhr->prefix, nhr->metric);
nht = sharp_nh_tracker_get(matched);
nht->nhop_num = nhr->nexthop_num;
nht->updates++;
sharp_debug_nexthops(nhr);
}
static int sharp_redistribute_route(ZAPI_CALLBACK_ARGS)
{
struct zapi_route api;
if (zapi_route_decode(zclient->ibuf, &api) < 0)
zlog_warn("%s: Decode of redistribute failed: %d", __func__,
ZEBRA_REDISTRIBUTE_ROUTE_ADD);
zlog_debug("%s: %pFX (%s)", zserv_command_string(cmd), &api.prefix,
zebra_route_string(api.type));
sharp_debug_nexthops(&api);
return 0;
}
void sharp_redistribute_vrf(struct vrf *vrf, int type, bool turn_on)
{
zebra_redistribute_send(turn_on ? ZEBRA_REDISTRIBUTE_ADD
: ZEBRA_REDISTRIBUTE_DELETE,
zclient, AFI_IP, type, 0, vrf->vrf_id);
}
static zclient_handler *const sharp_opaque_handlers[] = {
[ZEBRA_OPAQUE_MESSAGE] = sharp_opaque_handler,
};
/* Add a zclient with a specified session id, for testing. */
int sharp_zclient_create(uint32_t session_id)
{
struct zclient *client;
struct sharp_zclient *node;
/* Check for duplicates */
for (node = sharp_clients_head; node != NULL; node = node->next) {
if (node->client->session_id == session_id)
return -1;
}
client = zclient_new(master, &zclient_options_default,
sharp_opaque_handlers,
array_size(sharp_opaque_handlers));
client->sock = -1;
client->session_id = session_id;
zclient_init(client, ZEBRA_ROUTE_SHARP, 0, &sharp_privs);
/* Enqueue on the list of test clients */
add_zclient(client);
return 0;
}
/* Delete one of the extra test zclients */
int sharp_zclient_delete(uint32_t session_id)
{
struct sharp_zclient *node;
/* Search for session */
for (node = sharp_clients_head; node != NULL; node = node->next) {
if (node->client->session_id == session_id) {
/* Dequeue from list */
if (node->next)
node->next->prev = node->prev;
if (node->prev)
node->prev->next = node->next;
if (node == sharp_clients_head)
sharp_clients_head = node->next;
/* Clean up zclient */
zclient_stop(node->client);
zclient_free(node->client);
/* Free memory */
XFREE(MTYPE_ZC, node);
break;
}
}
return 0;
}
static const char *const type2txt[] = {"Generic", "Vertex", "Edge", "Subnet"};
static const char *const status2txt[] = {"Unknown", "New", "Update",
"Delete", "Sync", "Orphan"};
/* Handler for opaque messages */
static int sharp_opaque_handler(ZAPI_CALLBACK_ARGS)
{
struct stream *s;
struct zapi_opaque_msg info;
struct ls_element *lse;
s = zclient->ibuf;
if (zclient_opaque_decode(s, &info) != 0)
return -1;
zlog_debug("%s: [%u] received opaque type %u", __func__,
zclient->session_id, info.type);
if (info.type == LINK_STATE_UPDATE) {
lse = ls_stream2ted(sg.ted, s, true);
if (lse) {
zlog_debug(" |- Got %s %s from Link State Database",
status2txt[lse->status],
type2txt[lse->type]);
lse->status = SYNC;
} else
zlog_debug(
"%s: Error to convert Stream into Link State",
__func__);
}
return 0;
}
/* Handler for opaque notification messages */
static int sharp_opq_notify_handler(ZAPI_CALLBACK_ARGS)
{
struct stream *s;
struct zapi_opaque_notif_info info;
s = zclient->ibuf;
if (zclient_opaque_notif_decode(s, &info) != 0)
return -1;
if (info.reg)
zlog_debug("%s: received opaque notification REG, type %u => %d/%d/%d",
__func__, info.msg_type, info.proto, info.instance,
info.session_id);
else
zlog_debug("%s: received opaque notification UNREG, type %u",
__func__, info.msg_type);
return 0;
}
/*
* Send OPAQUE messages, using subtype 'type'.
*/
void sharp_opaque_send(uint32_t type, uint32_t proto, uint32_t instance,
uint32_t session_id, uint32_t count)
{
uint8_t buf[32];
int ret;
uint32_t i;
/* Prepare a small payload */
for (i = 0; i < sizeof(buf); i++) {
if (type < 255)
buf[i] = type;
else
buf[i] = 255;
}
/* Send some messages - broadcast and unicast are supported */
for (i = 0; i < count; i++) {
if (proto == 0)
ret = zclient_send_opaque(zclient, type, buf,
sizeof(buf));
else
ret = zclient_send_opaque_unicast(zclient, type, proto,
instance, session_id,
buf, sizeof(buf));
if (ret == ZCLIENT_SEND_FAILURE) {
zlog_debug("%s: send_opaque() failed => %d", __func__,
ret);
break;
}
}
}
/*
* Register/unregister for opaque notifications from zebra about 'type'.
*/
void sharp_zebra_opaque_notif_reg(bool is_reg, uint32_t type)
{
if (is_reg)
zclient_opaque_request_notify(zclient, type);
else
zclient_opaque_drop_notify(zclient, type);
}
/*
* Send OPAQUE registration messages, using subtype 'type'.
*/
void sharp_opaque_reg_send(bool is_reg, uint32_t proto, uint32_t instance,
uint32_t session_id, uint32_t type)
{
struct stream *s;
s = zclient->obuf;
stream_reset(s);
if (is_reg)
zclient_create_header(s, ZEBRA_OPAQUE_REGISTER, VRF_DEFAULT);
else
zclient_create_header(s, ZEBRA_OPAQUE_UNREGISTER, VRF_DEFAULT);
/* Send sub-type */
stream_putl(s, type);
/* Add zclient info */
stream_putc(s, proto);
stream_putw(s, instance);
stream_putl(s, session_id);
/* Put length at the first point of the stream. */
stream_putw_at(s, 0, stream_get_endp(s));
(void)zclient_send_message(zclient);
}
/* Link State registration */
void sharp_zebra_register_te(void)
{
/* First register to received Link State Update messages */
zclient_register_opaque(zclient, LINK_STATE_UPDATE);
/* Then, request initial TED with SYNC message */
ls_request_sync(zclient);
}
void sharp_zebra_send_arp(const struct interface *ifp, const struct prefix *p)
{
zclient_send_neigh_discovery_req(zclient, ifp, p);
}
static int nhg_notify_owner(ZAPI_CALLBACK_ARGS)
{
enum zapi_nhg_notify_owner note;
uint32_t id;
if (!zapi_nhg_notify_decode(zclient->ibuf, &id, ¬e))
return -1;
switch (note) {
case ZAPI_NHG_INSTALLED:
sharp_nhgroup_id_set_installed(id, true);
zlog_debug("Installed nhg %u", id);
break;
case ZAPI_NHG_FAIL_INSTALL:
zlog_debug("Failed install of nhg %u", id);
break;
case ZAPI_NHG_REMOVED:
sharp_nhgroup_id_set_installed(id, false);
zlog_debug("Removed nhg %u", id);
break;
case ZAPI_NHG_REMOVE_FAIL:
zlog_debug("Failed removal of nhg %u", id);
break;
}
return 0;
}
int sharp_zebra_srv6_manager_get_locator_chunk(const char *locator_name)
{
return srv6_manager_get_locator_chunk(zclient, locator_name);
}
int sharp_zebra_srv6_manager_release_locator_chunk(const char *locator_name)
{
return srv6_manager_release_locator_chunk(zclient, locator_name);
}
static int sharp_zebra_process_srv6_locator_chunk(ZAPI_CALLBACK_ARGS)
{
struct stream *s = NULL;
struct srv6_locator_chunk s6c = {};
struct listnode *node, *nnode;
struct sharp_srv6_locator *loc;
s = zclient->ibuf;
zapi_srv6_locator_chunk_decode(s, &s6c);
for (ALL_LIST_ELEMENTS(sg.srv6_locators, node, nnode, loc)) {
struct prefix_ipv6 *chunk = NULL;
struct listnode *chunk_node;
struct prefix_ipv6 *c;
if (strcmp(loc->name, s6c.locator_name) != 0) {
zlog_err("%s: Locator name unmatch %s:%s", __func__,
loc->name, s6c.locator_name);
continue;
}
for (ALL_LIST_ELEMENTS_RO(loc->chunks, chunk_node, c))
if (!prefix_cmp(c, &s6c.prefix))
return 0;
chunk = prefix_ipv6_new();
*chunk = s6c.prefix;
listnode_add(loc->chunks, chunk);
return 0;
}
zlog_err("%s: can't get locator_chunk!!", __func__);
return 0;
}
static int sharp_zebra_process_neigh(ZAPI_CALLBACK_ARGS)
{
union sockunion addr = {}, lladdr = {};
struct zapi_neigh_ip api = {};
struct interface *ifp;
zlog_debug("Received a neighbor event");
zclient_neigh_ip_decode(zclient->ibuf, &api);