static int
zsend_ipv4_import_lookup (struct zserv *client, struct prefix_ipv4 *p)
{
struct stream *s;
struct rib *rib;
unsigned long nump;
u_char num;
struct nexthop *nexthop;
/* Lookup nexthop. */
rib = rib_lookup_ipv4 (p);
/* Get output stream. */
s = client->obuf;
stream_reset (s);
/* Fill in result. */
stream_putw (s, 0);
stream_putc (s, ZEBRA_IPV4_IMPORT_LOOKUP);
stream_put_in_addr (s, &p->prefix);
if (rib)
{
stream_putl (s, rib->metric);
num = 0;
nump = s->putp;
stream_putc (s, 0);
for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next)
if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB))
{
stream_putc (s, nexthop->type);
switch (nexthop->type)
{
case ZEBRA_NEXTHOP_IPV4:
stream_put_in_addr (s, &nexthop->gate.ipv4);
break;
case ZEBRA_NEXTHOP_IFINDEX:
case ZEBRA_NEXTHOP_IFNAME:
stream_putl (s, nexthop->ifindex);
break;
default:
/* do nothing */
break;
}
num++;
}
stream_putc_at (s, nump, num);
}
else
{
stream_putl (s, 0);
stream_putc (s, 0);
}
stream_putw_at (s, 0, stream_get_endp (s));
zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
return 0;
}
struct bgp_nexthop_cache *
zlookup_query (struct in_addr addr)
{
int ret;
struct stream *s;
/* Check socket. */
if (zlookup->sock < 0)
return NULL;
s = zlookup->obuf;
stream_reset (s);
zclient_create_header (s, ZEBRA_IPV4_NEXTHOP_LOOKUP);
stream_put_in_addr (s, &addr);
stream_putw_at (s, 0, stream_get_endp (s));
ret = writen (zlookup->sock, s->data, stream_get_endp (s));
if (ret < 0)
{
zlog_err ("can't write to zlookup->sock");
close (zlookup->sock);
zlookup->sock = -1;
return NULL;
}
if (ret == 0)
{
zlog_err ("zlookup->sock connection closed");
close (zlookup->sock);
zlookup->sock = -1;
return NULL;
}
return zlookup_read ();
}
/*
* "xdr_encode"-like interface that allows daemon (client) to send
* a message to zebra server for a route that needs to be
* added/deleted to the kernel. Info about the route is specified
* by the caller in a struct zapi_ipv4. zapi_ipv4_read() then writes
* the info down the zclient socket using the stream_* functions.
*
* The corresponding read ("xdr_decode") function on the server
* side is zread_ipv4_add()/zread_ipv4_delete().
*
* 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 1 2 3 4 5 6 7 8 9 A B C D E F
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Length (2) | Command | Route Type |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | ZEBRA Flags | Message Flags | Prefix length |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Destination IPv4 Prefix for route |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Nexthop count |
* +-+-+-+-+-+-+-+-+
*
*
* A number of IPv4 nexthop(s) or nexthop interface index(es) are then
* described, as per the Nexthop count. Each nexthop described as:
*
* +-+-+-+-+-+-+-+-+
* | Nexthop Type | Set to one of ZEBRA_NEXTHOP_*
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | IPv4 Nexthop address or Interface Index number |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
* Alternatively, if the flags field has ZEBRA_FLAG_BLACKHOLE or
* ZEBRA_FLAG_REJECT is set then Nexthop count is set to 1, then _no_
* nexthop information is provided, and the message describes a prefix
* to blackhole or reject route.
*
* If ZAPI_MESSAGE_DISTANCE is set, the distance value is written as a 1
* byte value.
*
* If ZAPI_MESSAGE_METRIC is set, the metric value is written as an 8
* byte value.
*
* XXX: No attention paid to alignment.
*/
int
zapi_ipv4_route (u_char cmd, struct zclient *zclient, struct prefix_ipv4 *p,
struct zapi_ipv4 *api)
{
int i;
int psize;
struct stream *s;
/* Reset stream. */
s = zclient->obuf;
stream_reset (s);
zclient_create_header (s, cmd);
/* Put type and nexthop. */
stream_putc (s, api->type);
stream_putc (s, api->flags);
stream_putc (s, api->message);
stream_putw (s, api->safi);
/* Put prefix information. */
psize = PSIZE (p->prefixlen);
stream_putc (s, p->prefixlen);
stream_write (s, (u_char *) & p->prefix, psize);
/* Nexthop, ifindex, distance and metric information. */
if (CHECK_FLAG (api->message, ZAPI_MESSAGE_NEXTHOP))
{
if (CHECK_FLAG (api->flags, ZEBRA_FLAG_BLACKHOLE))
{
stream_putc (s, 1);
stream_putc (s, ZEBRA_NEXTHOP_BLACKHOLE);
/* XXX assert(api->nexthop_num == 0); */
/* XXX assert(api->ifindex_num == 0); */
}
else
stream_putc (s, api->nexthop_num + api->ifindex_num);
for (i = 0; i < api->nexthop_num; i++)
{
stream_putc (s, ZEBRA_NEXTHOP_IPV4);
stream_put_in_addr (s, api->nexthop[i]);
}
for (i = 0; i < api->ifindex_num; i++)
{
stream_putc (s, ZEBRA_NEXTHOP_IFINDEX);
stream_putl (s, api->ifindex[i]);
}
}
if (CHECK_FLAG (api->message, ZAPI_MESSAGE_DISTANCE))
stream_putc (s, api->distance);
if (CHECK_FLAG (api->message, ZAPI_MESSAGE_METRIC))
stream_putl (s, api->metric);
/* Put length at the first point of the stream. */
stream_putw_at (s, 0, stream_get_endp (s));
return zclient_send_message(zclient);
}
void zebra_ipmr_route_stats(ZAPI_HANDLER_ARGS)
{
struct mcast_route_data mroute;
struct stream *s;
int suc = -1;
memset(&mroute, 0, sizeof(mroute));
STREAM_GET(&mroute.sg.src, msg, 4);
STREAM_GET(&mroute.sg.grp, msg, 4);
STREAM_GETL(msg, mroute.ifindex);
if (IS_ZEBRA_DEBUG_KERNEL) {
char sbuf[40];
char gbuf[40];
strlcpy(sbuf, inet_ntoa(mroute.sg.src), sizeof(sbuf));
strlcpy(gbuf, inet_ntoa(mroute.sg.grp), sizeof(gbuf));
zlog_debug("Asking for (%s,%s) mroute information", sbuf, gbuf);
}
suc = kernel_get_ipmr_sg_stats(zvrf, &mroute);
stream_failure:
s = stream_new(ZEBRA_MAX_PACKET_SIZ);
stream_reset(s);
zclient_create_header(s, ZEBRA_IPMR_ROUTE_STATS, zvrf_id(zvrf));
stream_put_in_addr(s, &mroute.sg.src);
stream_put_in_addr(s, &mroute.sg.grp);
stream_put(s, &mroute.lastused, sizeof(mroute.lastused));
stream_putl(s, suc);
stream_putw_at(s, 0, stream_get_endp(s));
zserv_send_message(client, s);
}
static int zclient_lookup_nexthop_once(struct zclient *zlookup,
struct pim_zlookup_nexthop nexthop_tab[],
const int tab_size,
struct in_addr addr)
{
struct stream *s;
int ret;
if (PIM_DEBUG_ZEBRA) {
char addr_str[100];
pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
zlog_debug("%s: addr=%s",
__PRETTY_FUNCTION__,
addr_str);
}
/* Check socket. */
if (zlookup->sock < 0) {
zlog_err("%s %s: zclient lookup socket is not connected",
__FILE__, __PRETTY_FUNCTION__);
zclient_lookup_failed(zlookup);
return -1;
}
s = zlookup->obuf;
stream_reset(s);
zclient_create_header(s, ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB);
stream_put_in_addr(s, &addr);
stream_putw_at(s, 0, stream_get_endp(s));
ret = writen(zlookup->sock, s->data, stream_get_endp(s));
if (ret < 0) {
zlog_err("%s %s: writen() failure writing to zclient lookup socket",
__FILE__, __PRETTY_FUNCTION__);
zclient_lookup_failed(zlookup);
return -2;
}
if (ret == 0) {
zlog_err("%s %s: connection closed on zclient lookup socket",
__FILE__, __PRETTY_FUNCTION__);
zclient_lookup_failed(zlookup);
return -3;
}
return zclient_read_nexthop(zlookup, nexthop_tab,
tab_size, addr);
}
size_t
zebra_interface_link_params_write (struct stream *s, struct interface *ifp)
{
size_t w;
struct if_link_params *iflp;
int i;
if (s == NULL || ifp == NULL || ifp->link_params == NULL)
return 0;
iflp = ifp->link_params;
w = 0;
w += stream_putl (s, iflp->lp_status);
w += stream_putl (s, iflp->te_metric);
w += stream_putf (s, iflp->max_bw);
w += stream_putf (s, iflp->max_rsv_bw);
w += stream_putl (s, MAX_CLASS_TYPE);
for (i = 0; i < MAX_CLASS_TYPE; i++)
w += stream_putf (s, iflp->unrsv_bw[i]);
w += stream_putl (s, iflp->admin_grp);
w += stream_putl (s, iflp->rmt_as);
w += stream_put_in_addr (s, &iflp->rmt_ip);
w += stream_putl (s, iflp->av_delay);
w += stream_putl (s, iflp->min_delay);
w += stream_putl (s, iflp->max_delay);
w += stream_putl (s, iflp->delay_var);
w += stream_putf (s, iflp->pkt_loss);
w += stream_putf (s, iflp->res_bw);
w += stream_putf (s, iflp->ava_bw);
w += stream_putf (s, iflp->use_bw);
return w;
}
static int
bgp_import_check (struct prefix *p, u_int32_t *igpmetric,
struct in_addr *igpnexthop)
{
struct stream *s;
int ret;
u_int16_t length, command;
u_char version, marker;
int nbytes;
struct in_addr addr;
struct in_addr nexthop;
u_int32_t metric = 0;
u_char nexthop_num;
u_char nexthop_type;
/* If lookup connection is not available return valid. */
if (zlookup->sock < 0)
{
if (igpmetric)
*igpmetric = 0;
return 1;
}
/* Send query to the lookup connection */
s = zlookup->obuf;
stream_reset (s);
zclient_create_header (s, ZEBRA_IPV4_IMPORT_LOOKUP);
stream_putc (s, p->prefixlen);
stream_put_in_addr (s, &p->u.prefix4);
stream_putw_at (s, 0, stream_get_endp (s));
/* Write the packet. */
ret = writen (zlookup->sock, s->data, stream_get_endp (s));
if (ret < 0)
{
zlog_err ("can't write to zlookup->sock");
close (zlookup->sock);
zlookup->sock = -1;
return 1;
}
if (ret == 0)
{
zlog_err ("zlookup->sock connection closed");
close (zlookup->sock);
zlookup->sock = -1;
return 1;
}
/* Get result. */
stream_reset (s);
/* Fetch length. */
nbytes = stream_read (s, zlookup->sock, 2);
length = stream_getw (s);
/* Fetch whole data. */
nbytes = stream_read (s, zlookup->sock, length - 2);
marker = stream_getc (s);
version = stream_getc (s);
if (version != ZSERV_VERSION || marker != ZEBRA_HEADER_MARKER)
{
zlog_err("%s: socket %d version mismatch, marker %d, version %d",
__func__, zlookup->sock, marker, version);
return 0;
}
command = stream_getw (s);
addr.s_addr = stream_get_ipv4 (s);
metric = stream_getl (s);
nexthop_num = stream_getc (s);
/* Set IGP metric value. */
if (igpmetric)
*igpmetric = metric;
/* If there is nexthop then this is active route. */
if (nexthop_num)
{
nexthop.s_addr = 0;
nexthop_type = stream_getc (s);
if (nexthop_type == ZEBRA_NEXTHOP_IPV4)
{
nexthop.s_addr = stream_get_ipv4 (s);
if (igpnexthop)
*igpnexthop = nexthop;
}
else
*igpnexthop = nexthop;
return 1;
}
else
return 0;
}
static void
bgp_dump_routes_index_table(struct bgp *bgp)
{
struct peer *peer;
struct listnode *node;
uint16_t peerno = 0;
struct stream *obuf;
obuf = bgp_dump_obuf;
stream_reset (obuf);
/* MRT header */
bgp_dump_header (obuf, MSG_TABLE_DUMP_V2, TABLE_DUMP_V2_PEER_INDEX_TABLE,
BGP_DUMP_ROUTES);
/* Collector BGP ID */
stream_put_in_addr (obuf, &bgp->router_id);
/* View name */
if(bgp->name)
{
stream_putw (obuf, strlen(bgp->name));
stream_put(obuf, bgp->name, strlen(bgp->name));
}
else
{
stream_putw(obuf, 0);
}
/* Peer count */
stream_putw (obuf, listcount(bgp->peer));
/* Walk down all peers */
for(ALL_LIST_ELEMENTS_RO (bgp->peer, node, peer))
{
/* Peer's type */
if (sockunion_family(&peer->su) == AF_INET)
{
stream_putc (obuf, TABLE_DUMP_V2_PEER_INDEX_TABLE_AS4+TABLE_DUMP_V2_PEER_INDEX_TABLE_IP);
}
else if (sockunion_family(&peer->su) == AF_INET6)
{
stream_putc (obuf, TABLE_DUMP_V2_PEER_INDEX_TABLE_AS4+TABLE_DUMP_V2_PEER_INDEX_TABLE_IP6);
}
/* Peer's BGP ID */
stream_put_in_addr (obuf, &peer->remote_id);
/* Peer's IP address */
if (sockunion_family(&peer->su) == AF_INET)
{
stream_put_in_addr (obuf, &peer->su.sin.sin_addr);
}
else if (sockunion_family(&peer->su) == AF_INET6)
{
stream_write (obuf, (u_char *)&peer->su.sin6.sin6_addr,
IPV6_MAX_BYTELEN);
}
/* Peer's AS number. */
/* Note that, as this is an AS4 compliant quagga, the RIB is always AS4 */
stream_putl (obuf, peer->as);
/* Store the peer number for this peer */
peer->table_dump_index = peerno;
peerno++;
}
bgp_dump_set_size(obuf, MSG_TABLE_DUMP_V2);
fwrite (STREAM_DATA (obuf), stream_get_endp (obuf), 1, bgp_dump_routes.fp);
fflush (bgp_dump_routes.fp);
}
void
isis_zebra_route_add_ipv4 (struct prefix *prefix,
struct isis_route_info *route_info)
{
u_char message, flags;
int psize;
struct stream *stream;
struct isis_nexthop *nexthop;
struct listnode *node;
if (CHECK_FLAG (route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNC))
return;
if (zclient->redist[ZEBRA_ROUTE_ISIS])
{
message = 0;
flags = 0;
SET_FLAG (message, ZAPI_MESSAGE_NEXTHOP);
SET_FLAG (message, ZAPI_MESSAGE_METRIC);
#if 0
SET_FLAG (message, ZAPI_MESSAGE_DISTANCE);
#endif
stream = zclient->obuf;
stream_reset (stream);
/* Length place holder. */
stream_putw (stream, 0);
/* command */
stream_putc (stream, ZEBRA_IPV4_ROUTE_ADD);
/* type */
stream_putc (stream, ZEBRA_ROUTE_ISIS);
/* flags */
stream_putc (stream, flags);
/* message */
stream_putc (stream, message);
/* prefix information */
psize = PSIZE (prefix->prefixlen);
stream_putc (stream, prefix->prefixlen);
stream_write (stream, (u_char *) & prefix->u.prefix4, psize);
stream_putc (stream, listcount (route_info->nexthops));
/* Nexthop, ifindex, distance and metric information */
for (node = listhead (route_info->nexthops); node; nextnode (node))
{
nexthop = getdata (node);
/* FIXME: can it be ? */
if (nexthop->ip.s_addr != INADDR_ANY)
{
stream_putc (stream, ZEBRA_NEXTHOP_IPV4);
stream_put_in_addr (stream, &nexthop->ip);
}
else
{
stream_putc (stream, ZEBRA_NEXTHOP_IFINDEX);
stream_putl (stream, nexthop->ifindex);
}
}
#if 0
if (CHECK_FLAG (message, ZAPI_MESSAGE_DISTANCE))
stream_putc (stream, route_info->depth);
#endif
if (CHECK_FLAG (message, ZAPI_MESSAGE_METRIC))
stream_putl (stream, route_info->cost);
stream_putw_at (stream, 0, stream_get_endp (stream));
writen (zclient->sock, stream->data, stream_get_endp (stream));
}
}
void
ospf_zebra_add (struct prefix_ipv4 *p, struct ospf_route *or)
{
u_char message;
u_char distance;
u_char flags;
int psize;
struct stream *s;
struct ospf_path *path;
struct listnode *node;
if (zclient->redist[ZEBRA_ROUTE_OSPF])
{
message = 0;
flags = 0;
/* OSPF pass nexthop and metric */
SET_FLAG (message, ZAPI_MESSAGE_NEXTHOP);
SET_FLAG (message, ZAPI_MESSAGE_METRIC);
/* Distance value. */
distance = ospf_distance_apply (p, or);
if (distance)
SET_FLAG (message, ZAPI_MESSAGE_DISTANCE);
/* Make packet. */
s = zclient->obuf;
stream_reset (s);
/* Put command, type, flags, message. */
zclient_create_header (s, ZEBRA_IPV4_ROUTE_ADD);
stream_putc (s, ZEBRA_ROUTE_OSPF);
stream_putc (s, flags);
stream_putc (s, message);
stream_putw (s, SAFI_UNICAST);
/* Put prefix information. */
psize = PSIZE (p->prefixlen);
stream_putc (s, p->prefixlen);
stream_write (s, (u_char *) & p->prefix, psize);
/* Nexthop count. */
stream_putc (s, or->paths->count);
/* Nexthop, ifindex, distance and metric information. */
for (ALL_LIST_ELEMENTS_RO (or->paths, node, path))
{
if (path->nexthop.s_addr != INADDR_ANY &&
path->ifindex != 0)
{
stream_putc (s, ZEBRA_NEXTHOP_IPV4_IFINDEX);
stream_put_in_addr (s, &path->nexthop);
stream_putl (s, path->ifindex);
}
else if (path->nexthop.s_addr != INADDR_ANY)
{
stream_putc (s, ZEBRA_NEXTHOP_IPV4);
stream_put_in_addr (s, &path->nexthop);
}
else
{
stream_putc (s, ZEBRA_NEXTHOP_IFINDEX);
if (path->ifindex)
stream_putl (s, path->ifindex);
else
stream_putl (s, 0);
}
if (IS_DEBUG_OSPF (zebra, ZEBRA_REDISTRIBUTE))
{
char buf[2][INET_ADDRSTRLEN];
zlog_debug("Zebra: Route add %s/%d nexthop %s",
inet_ntop(AF_INET, &p->prefix,
buf[0], sizeof(buf[0])),
p->prefixlen,
inet_ntop(AF_INET, &path->nexthop,
buf[1], sizeof(buf[1])));
}
}
if (CHECK_FLAG (message, ZAPI_MESSAGE_DISTANCE))
stream_putc (s, distance);
if (CHECK_FLAG (message, ZAPI_MESSAGE_METRIC))
{
if (or->path_type == OSPF_PATH_TYPE1_EXTERNAL)
stream_putl (s, or->cost + or->u.ext.type2_cost);
else if (or->path_type == OSPF_PATH_TYPE2_EXTERNAL)
stream_putl (s, or->u.ext.type2_cost);
else
stream_putl (s, or->cost);
}
stream_putw_at (s, 0, stream_get_endp (s));
zclient_send_message(zclient);
}
/*
* The zebra server sends the clients a ZEBRA_IPV4_ROUTE_ADD or a
* ZEBRA_IPV6_ROUTE_ADD via zsend_route_multipath in the following
* situations:
* - when the client starts up, and requests default information
* by sending a ZEBRA_REDISTRIBUTE_DEFAULT_ADD to the zebra server, in the
* - case of rip, ripngd, ospfd and ospf6d, when the client sends a
* ZEBRA_REDISTRIBUTE_ADD as a result of the "redistribute" vty cmd,
* - when the zebra server redistributes routes after it updates its rib
*
* The zebra server sends clients a ZEBRA_IPV4_ROUTE_DELETE or a
* ZEBRA_IPV6_ROUTE_DELETE via zsend_route_multipath when:
* - a "ip route" or "ipv6 route" vty command is issued, a prefix is
* - deleted from zebra's rib, and this info
* has to be redistributed to the clients
*
* XXX The ZEBRA_IPV*_ROUTE_ADD message is also sent by the client to the
* zebra server when the client wants to tell the zebra server to add a
* route to the kernel (zapi_ipv4_add etc. ). Since it's essentially the
* same message being sent back and forth, this function and
* zapi_ipv{4,6}_{add, delete} should be re-written to avoid code
* duplication.
*/
int
zsend_route_multipath (int cmd, struct zserv *client, struct prefix *p,
struct rib *rib)
{
int psize;
struct stream *s;
struct nexthop *nexthop;
unsigned long nhnummark = 0;
int nhnum = 0;
u_char zapi_flags = ZAPI_MESSAGE_NEXTHOP | ZAPI_MESSAGE_IFINDEX;
s = client->obuf;
stream_reset (s);
/* Place holder for size. */
stream_putw (s, 0);
/* Put command, type and nexthop. */
stream_putc (s, cmd);
stream_putc (s, rib->type);
stream_putc (s, rib->flags);
/*
* XXX no need to set ZAPI_MESSAGE_NEXTHOP if we are going to
* send empty nexthop?
*/
if (cmd == ZEBRA_IPV4_ROUTE_ADD || ZEBRA_IPV6_ROUTE_ADD)
zapi_flags |= ZAPI_MESSAGE_METRIC;
stream_putc (s, zapi_flags);
/* Prefix. */
psize = PSIZE (p->prefixlen);
stream_putc (s, p->prefixlen);
stream_write (s, (u_char *) & p->u.prefix, psize);
/*
* XXX The message format sent by zebra below does not match the format
* of the corresponding message expected by the zebra server
* itself (e.g., see zread_ipv4_add). The nexthop_num is not set correctly,
* (is there a bug on the client side if more than one segment is sent?)
* nexthop ZEBRA_NEXTHOP_IPV4 is never set, ZEBRA_NEXTHOP_IFINDEX
* is hard-coded.
*/
/* Nexthop */
for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next)
{
if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB))
{
nhnummark = stream_get_putp (s);
stream_putc (s, 1); /* placeholder */
nhnum++;
switch(nexthop->type)
{
case NEXTHOP_TYPE_IPV4:
case NEXTHOP_TYPE_IPV4_IFINDEX:
stream_put_in_addr (s, &nexthop->gate.ipv4);
break;
#ifdef HAVE_IPV6
case NEXTHOP_TYPE_IPV6:
case NEXTHOP_TYPE_IPV6_IFINDEX:
case NEXTHOP_TYPE_IPV6_IFNAME:
stream_write (s, (u_char *) &nexthop->gate.ipv6, 16);
break;
#endif
default:
if (cmd == ZEBRA_IPV4_ROUTE_ADD
|| cmd == ZEBRA_IPV4_ROUTE_DELETE)
{
struct in_addr empty;
memset (&empty, 0, sizeof (struct in_addr));
stream_write (s, (u_char *) &empty, IPV4_MAX_BYTELEN);
}
else
{
struct in6_addr empty;
memset (&empty, 0, sizeof (struct in6_addr));
stream_write (s, (u_char *) &empty, IPV6_MAX_BYTELEN);
}
}
/* Interface index. */
stream_putc (s, 1);
stream_putl (s, nexthop->ifindex);
break;
}
}
/* Metric */
stream_putl (s, rib->metric);
/* Write next-hop number */
if (nhnummark)
stream_putc_at (s, nhnummark, nhnum);
/* Write packet size. */
stream_putw_at (s, 0, stream_get_endp (s));
zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
return 0;
}
void
bgp_dump_routes_entry (struct prefix *p, struct bgp_info *info, int afi,
int type, unsigned int seq)
{
struct stream *obuf;
struct attr *attr;
struct peer *peer;
int plen;
int safi = 0;
/* Make dump stream. */
obuf = bgp_dump_obuf;
stream_reset (obuf);
attr = info->attr;
peer = info->peer;
/* We support MRT's old format. */
if (type == MSG_TABLE_DUMP)
{
bgp_dump_header (obuf, MSG_TABLE_DUMP, afi);
stream_putw (obuf, 0); /* View # */
stream_putw (obuf, seq); /* Sequence number. */
}
else
{
bgp_dump_header (obuf, MSG_PROTOCOL_BGP4MP, BGP4MP_ENTRY);
stream_putl (obuf, info->uptime); /* Time Last Change */
stream_putw (obuf, afi); /* Address Family */
stream_putc (obuf, safi); /* SAFI */
}
if (afi == AFI_IP)
{
if (type == MSG_TABLE_DUMP)
{
/* Prefix */
stream_put_in_addr (obuf, &p->u.prefix4);
stream_putc (obuf, p->prefixlen);
/* Status */
stream_putc (obuf, 1);
/* Originated */
stream_putl (obuf, info->uptime);
/* Peer's IP address */
stream_put_in_addr (obuf, &peer->su.sin.sin_addr);
/* Peer's AS number. */
stream_putw (obuf, peer->as);
/* Dump attribute. */
bgp_dump_routes_attr (obuf, attr, p);
}
else
{
/* Next-Hop-Len */
stream_putc (obuf, IPV4_MAX_BYTELEN);
stream_put_in_addr (obuf, &attr->nexthop);
stream_putc (obuf, p->prefixlen);
plen = PSIZE (p->prefixlen);
stream_put (obuf, &p->u.prefix4, plen);
bgp_dump_routes_attr (obuf, attr, p);
}
}
#ifdef HAVE_IPV6
else if (afi == AFI_IP6)
{
if (type == MSG_TABLE_DUMP)
{
/* Prefix */
stream_write (obuf, (u_char *)&p->u.prefix6, IPV6_MAX_BYTELEN);
stream_putc (obuf, p->prefixlen);
/* Status */
stream_putc (obuf, 1);
/* Originated */
stream_putl (obuf, info->uptime);
/* Peer's IP address */
stream_write (obuf, (u_char *)&peer->su.sin6.sin6_addr,
IPV6_MAX_BYTELEN);
/* Peer's AS number. */
stream_putw (obuf, peer->as);
/* Dump attribute. */
bgp_dump_routes_attr (obuf, attr, p);
}
else
{
;
}
}
#endif /* HAVE_IPV6 */
/* Set length. */
bgp_dump_set_size (obuf, type);
fwrite (STREAM_DATA (obuf), stream_get_putp (obuf), 1, bgp_dump_routes.fp);
fflush (bgp_dump_routes.fp);
}
static void
isis_zebra_route_add_ipv4 (struct prefix *prefix,
struct isis_route_info *route_info)
{
u_char message, flags;
int psize;
struct stream *stream;
struct isis_nexthop *nexthop;
struct listnode *node;
if (CHECK_FLAG (route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNCED))
return;
if (vrf_bitmap_check (zclient->redist[ZEBRA_ROUTE_ISIS], VRF_DEFAULT))
{
message = 0;
flags = 0;
SET_FLAG (message, ZAPI_MESSAGE_NEXTHOP);
SET_FLAG (message, ZAPI_MESSAGE_METRIC);
#if 0
SET_FLAG (message, ZAPI_MESSAGE_DISTANCE);
#endif
stream = zclient->obuf;
stream_reset (stream);
zclient_create_header (stream, ZEBRA_IPV4_ROUTE_ADD, VRF_DEFAULT);
/* type */
stream_putc (stream, ZEBRA_ROUTE_ISIS);
/* flags */
stream_putc (stream, flags);
/* message */
stream_putc (stream, message);
/* SAFI */
stream_putw (stream, SAFI_UNICAST);
/* prefix information */
psize = PSIZE (prefix->prefixlen);
stream_putc (stream, prefix->prefixlen);
stream_write (stream, (u_char *) & prefix->u.prefix4, psize);
stream_putc (stream, listcount (route_info->nexthops));
/* Nexthop, ifindex, distance and metric information */
for (ALL_LIST_ELEMENTS_RO (route_info->nexthops, node, nexthop))
{
/* FIXME: can it be ? */
if (nexthop->ip.s_addr != INADDR_ANY)
{
stream_putc (stream, ZEBRA_NEXTHOP_IPV4);
stream_put_in_addr (stream, &nexthop->ip);
}
else
{
stream_putc (stream, ZEBRA_NEXTHOP_IFINDEX);
stream_putl (stream, nexthop->ifindex);
}
}
#if 0
if (CHECK_FLAG (message, ZAPI_MESSAGE_DISTANCE))
stream_putc (stream, route_info->depth);
#endif
if (CHECK_FLAG (message, ZAPI_MESSAGE_METRIC))
stream_putl (stream, route_info->cost);
stream_putw_at (stream, 0, stream_get_endp (stream));
zclient_send_message(zclient);
SET_FLAG (route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_SYNCED);
UNSET_FLAG (route_info->flag, ISIS_ROUTE_FLAG_ZEBRA_RESYNC);
}
static int
send_client (struct rnh *rnh, struct zserv *client, vrf_id_t vrf_id)
{
struct stream *s;
struct rib *rib;
unsigned long nump;
u_char num;
struct nexthop *nexthop;
struct route_node *rn;
rn = rnh->node;
rib = rnh->state;
/* Get output stream. */
s = client->obuf;
stream_reset (s);
zserv_create_header (s, ZEBRA_NEXTHOP_UPDATE, vrf_id);
stream_putw(s, rn->p.family);
stream_put_prefix (s, &rn->p);
if (rib)
{
stream_putl (s, rib->metric);
num = 0;
nump = stream_get_endp(s);
stream_putc (s, 0);
for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next)
if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB) &&
! CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE) &&
CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE))
{
stream_putc (s, nexthop->type);
switch (nexthop->type)
{
case ZEBRA_NEXTHOP_IPV4:
stream_put_in_addr (s, &nexthop->gate.ipv4);
break;
case ZEBRA_NEXTHOP_IFINDEX:
case ZEBRA_NEXTHOP_IFNAME:
stream_putl (s, nexthop->ifindex);
break;
case ZEBRA_NEXTHOP_IPV4_IFINDEX:
case ZEBRA_NEXTHOP_IPV4_IFNAME:
stream_put_in_addr (s, &nexthop->gate.ipv4);
stream_putl (s, nexthop->ifindex);
break;
#ifdef HAVE_IPV6
case ZEBRA_NEXTHOP_IPV6:
stream_put (s, &nexthop->gate.ipv6, 16);
break;
case ZEBRA_NEXTHOP_IPV6_IFINDEX:
case ZEBRA_NEXTHOP_IPV6_IFNAME:
stream_put (s, &nexthop->gate.ipv6, 16);
stream_putl (s, nexthop->ifindex);
break;
#endif /* HAVE_IPV6 */
default:
/* do nothing */
break;
}
num++;
}
stream_putc_at (s, nump, num);
}
else
{
stream_putl (s, 0);
stream_putc (s, 0);
}
stream_putw_at (s, 0, stream_get_endp (s));
client->nh_last_upd_time = quagga_time(NULL);
client->last_write_cmd = ZEBRA_NEXTHOP_UPDATE;
return zebra_server_send_message(client);
}
static int
zsend_ipv4_nexthop_lookup (struct zserv *client, struct in_addr addr)
{
struct stream *s;
struct rib *rib;
unsigned long nump;
u_char num;
struct nexthop *nexthop;
/* Lookup nexthop. */
rib = rib_match_ipv4 (addr);
/* Get output stream. */
s = client->obuf;
stream_reset (s);
/* Fill in result. */
zserv_create_header (s, ZEBRA_IPV4_NEXTHOP_LOOKUP);
stream_put_in_addr (s, &addr);
if (rib)
{
if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
zlog_debug("%s: Matching rib entry found.", __func__);
stream_putl (s, rib->metric);
num = 0;
nump = stream_get_endp(s);
stream_putc (s, 0);
for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next)
if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB))
{
stream_putc (s, nexthop->type);
switch (nexthop->type)
{
case ZEBRA_NEXTHOP_IPV4:
stream_put_in_addr (s, &nexthop->gate.ipv4);
break;
case ZEBRA_NEXTHOP_IPV4_IFINDEX:
stream_put_in_addr (s, &nexthop->gate.ipv4);
stream_putl (s, nexthop->ifindex);
break;
case ZEBRA_NEXTHOP_IFINDEX:
case ZEBRA_NEXTHOP_IFNAME:
stream_putl (s, nexthop->ifindex);
break;
default:
/* do nothing */
break;
}
num++;
}
stream_putc_at (s, nump, num);
}
else
{
if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
zlog_debug("%s: No matching rib entry found.", __func__);
stream_putl (s, 0);
stream_putc (s, 0);
}
stream_putw_at (s, 0, stream_get_endp (s));
return zebra_server_send_message(client);
}
/*
* "xdr_encode"-like interface that allows daemon (client) to send
* a message to zebra server for a route that needs to be
* added/deleted to the kernel. Info about the route is specified
* by the caller in a struct zapi_ipv4. zapi_ipv4_read() then writes
* the info down the zclient socket using the stream_* functions.
*
* The corresponding read ("xdr_decode") function on the server
* side is zread_ipv4_add()/zread_ipv4_delete().
*
* 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 1 2 3 4 5 6 7 8 9 A B C D E F
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Length (2) | Command | Route Type |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | ZEBRA Flags | Message Flags | Prefix length |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Destination IPv4 Prefix for route |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Nexthop count |
* +-+-+-+-+-+-+-+-+
*
*
* A number of IPv4 nexthop(s) or nexthop interface index(es) are then
* described, as per the Nexthop count. Each nexthop described as:
*
* +-+-+-+-+-+-+-+-+
* | Nexthop Type | Set to one of ZEBRA_NEXTHOP_*
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | IPv4 Nexthop address or Interface Index number |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
* Alternatively, if the flags field has ZEBRA_FLAG_BLACKHOLE or
* ZEBRA_FLAG_REJECT is set then Nexthop count is set to 1, then _no_
* nexthop information is provided, and the message describes a prefix
* to blackhole or reject route.
*
* The original struct zapi_ipv4, zapi_ipv4_route() and zread_ipv4_*()
* infrastructure was built around the traditional (32-bit "gate OR
* ifindex") nexthop data unit. A special encoding can be used to feed
* onlink (64-bit "gate AND ifindex") nexthops into zapi_ipv4_route()
* using the same zapi_ipv4 structure. This is done by setting zapi_ipv4
* fields as follows:
* - .message |= ZAPI_MESSAGE_NEXTHOP | ZAPI_MESSAGE_ONLINK
* - .nexthop_num == .ifindex_num
* - .nexthop and .ifindex are filled with gate and ifindex parts of
* each compound nexthop, both in the same order
*
* zapi_ipv4_route() will produce two nexthop data units for each such
* interleaved 64-bit nexthop. On the zserv side of the socket it will be
* mapped to a singlle NEXTHOP_TYPE_IPV4_IFINDEX_OL RIB nexthop structure.
*
* If ZAPI_MESSAGE_DISTANCE is set, the distance value is written as a 1
* byte value.
*
* If ZAPI_MESSAGE_METRIC is set, the metric value is written as an 8
* byte value.
*
* XXX: No attention paid to alignment.
*/
int
zapi_ipv4_route (u_char cmd, struct zclient *zclient, struct prefix_ipv4 *p,
struct zapi_ipv4 *api)
{
int i;
int psize;
struct stream *s;
/* Reset stream. */
s = zclient->obuf;
stream_reset (s);
zclient_create_header (s, cmd);
/* Put type and nexthop. */
stream_putc (s, api->type);
stream_putc (s, api->flags);
stream_putc (s, api->message);
stream_putw (s, api->safi);
/* Put prefix information. */
psize = PSIZE (p->prefixlen);
stream_putc (s, p->prefixlen);
stream_write (s, (u_char *) & p->prefix, psize);
/* Nexthop, ifindex, distance and metric information. */
/* ZAPI_MESSAGE_ONLINK implies interleaving */
if (CHECK_FLAG (api->message, ZAPI_MESSAGE_ONLINK))
{
/* ZAPI_MESSAGE_NEXTHOP is required for proper receiving */
assert (CHECK_FLAG (api->message, ZAPI_MESSAGE_NEXTHOP));
/* 64-bit data units, interleaved between nexthop[] and ifindex[] */
assert (api->nexthop_num == api->ifindex_num);
stream_putc (s, api->nexthop_num * 2);
for (i = 0; i < api->nexthop_num; i++)
{
stream_putc (s, ZEBRA_NEXTHOP_IPV4_ONLINK);
stream_put_in_addr (s, api->nexthop[i]);
stream_putc (s, ZEBRA_NEXTHOP_IFINDEX);
stream_putl (s, api->ifindex[i]);
}
}
else if (CHECK_FLAG (api->message, ZAPI_MESSAGE_NEXTHOP))
{
/* traditional 32-bit data units */
if (CHECK_FLAG (api->flags, ZEBRA_FLAG_BLACKHOLE | ZEBRA_FLAG_REJECT))
{
stream_putc (s, 1);
stream_putc (s, ZEBRA_NEXTHOP_BLACKHOLE);
/* XXX assert(api->nexthop_num == 0); */
/* XXX assert(api->ifindex_num == 0); */
}
else
stream_putc (s, api->nexthop_num + api->ifindex_num);
for (i = 0; i < api->nexthop_num; i++)
{
stream_putc (s, ZEBRA_NEXTHOP_IPV4);
stream_put_in_addr (s, api->nexthop[i]);
}
for (i = 0; i < api->ifindex_num; i++)
{
stream_putc (s, ZEBRA_NEXTHOP_IFINDEX);
stream_putl (s, api->ifindex[i]);
}
}
if (CHECK_FLAG (api->message, ZAPI_MESSAGE_DISTANCE))
stream_putc (s, api->distance);
if (CHECK_FLAG (api->message, ZAPI_MESSAGE_METRIC))
stream_putl (s, api->metric);
/* Put length at the first point of the stream. */
stream_putw_at (s, 0, stream_get_endp (s));
return zclient_send_message(zclient);
}