/* Update source selection. */
static int bgp_update_source(struct peer *peer)
{
struct interface *ifp;
union sockunion addr;
int ret = 0;
sockunion_init(&addr);
/* Source is specified with interface name. */
if (peer->update_if) {
ifp = if_lookup_by_name(peer->update_if, peer->bgp->vrf_id);
if (!ifp)
return -1;
if (bgp_update_address(ifp, &peer->su, &addr))
return -1;
ret = sockunion_bind(peer->fd, &addr, 0, &addr);
}
/* Source is specified with IP address. */
if (peer->update_source)
ret = sockunion_bind(peer->fd, peer->update_source, 0,
peer->update_source);
return ret;
}
/* Match function return 1 if match is success else return zero. */
route_map_result_t
route_match_interface (void *rule, struct prefix *prefix,
route_map_object_t type, void *object)
{
struct rip_info *rinfo;
struct interface *ifp;
char *ifname;
if (type == RMAP_RIP)
{
ifname = rule;
ifp = if_lookup_by_name(ifname);
if (!ifp)
return RMAP_NOMATCH;
rinfo = object;
if (rinfo->ifindex_out == ifp->ifindex)
return RMAP_MATCH;
else
return RMAP_NOMATCH;
}
return RMAP_NOMATCH;
}
/* Create new interface structure. */
struct interface *
if_create (const char *name, int namelen)
{
struct interface *ifp;
ifp = XCALLOC (MTYPE_IF, sizeof (struct interface));
ifp->ifindex = IFINDEX_INTERNAL;
assert (name);
assert (namelen <= INTERFACE_NAMSIZ); /* Need space for '\0' at end. */
strncpy (ifp->name, name, namelen);
ifp->name[namelen] = '\0';
if (if_lookup_by_name(ifp->name) == NULL)
listnode_add_sort (iflist, ifp);
else
zlog_err("if_create(%s): corruption detected -- interface with this "
"name exists already!", ifp->name);
ifp->connected = list_new ();
ifp->connected->del = (void (*) (void *)) connected_free;
if (if_master.if_new_hook)
(*if_master.if_new_hook) (ifp);
return ifp;
}
unsigned int ifname2ifindex (const char *name)
{
struct interface *ifp;
return ((ifp = if_lookup_by_name(name)) != NULL) ? ifp->ifIndex
: -1;
}
static int ldp_labelspace_read(int cmd, struct zclient *client,
zebra_size_t size) {
struct zapi_mpls_labelspace api;
struct interface *ifp;
struct ldp_interface *li;
int labelspace;
mpls_labelspace_stream_read(client->ibuf, &api);
ifp = if_lookup_by_name(api.ifname);
if (ifp) {
labelspace = ifp->mpls_labelspace;
ifp->mpls_labelspace = api.labelspace;
if (ifp->info) {
li = ifp->info;
if (api.labelspace < 0) {
if (li->configured == MPLS_BOOL_TRUE)
ldp_interface_shutdown (li);
} else {
if (labelspace >= 0) {
if (li->configured == MPLS_BOOL_TRUE)
ldp_interface_shutdown (li);
}
if (li->configured == MPLS_BOOL_TRUE)
ldp_interface_startup (li);
}
}
}
return 0;
}
/* Get interface by name if given name interface doesn't exist create
one. */
struct interface *if_get_by_name(const char *name)
{
struct interface *ifp;
return ((ifp = if_lookup_by_name(name)) != NULL) ? ifp :
if_create(name, strlen(name));
}
/*
* Read interface up/down msg (ZEBRA_INTERFACE_UP/ZEBRA_INTERFACE_DOWN)
* from zebra server. The format of this message is the same as
* that sent for ZEBRA_INTERFACE_ADD/ZEBRA_INTERFACE_DELETE (see
* comments for zebra_interface_add_read), except that no sockaddr_dl
* is sent at the tail of the message.
*/
struct interface_FOO *
zebra_interface_state_read (struct stream *s)
{
struct interface_FOO *ifp;
char ifname_tmp[INTERFACE_NAMSIZ];
/* Read interface name. */
stream_get (ifname_tmp, s, INTERFACE_NAMSIZ);
/* Lookup this by interface index. */
ifp = if_lookup_by_name (ifname_tmp);
/* If such interface does not exist, indicate an error */
if (! ifp)
return NULL;
/* Read interface's index. */
ifp->ifindex = stream_getl (s);
/* Read interface's value. */
ifp->status = stream_getc (s);
ifp->flags = stream_getl (s);
ifp->metric = stream_getl (s);
ifp->mtu = stream_getl (s);
ifp->mtu6 = stream_getl (s);
ifp->bandwidth = stream_getl (s);
return ifp;
}
static struct interface *zebra_interface_if_lookup(struct stream *s)
{
char ifname_tmp[INTERFACE_NAMSIZ];
/* Read interface name. */
stream_get(ifname_tmp, s, INTERFACE_NAMSIZ);
/* And look it up. */
return if_lookup_by_name(ifname_tmp, VRF_DEFAULT);
}
static void nhrp_interface_update_nbma(struct interface *ifp)
{
struct nhrp_interface *nifp = ifp->info, *nbmanifp = NULL;
struct interface *nbmaifp = NULL;
union sockunion nbma;
sockunion_family(&nbma) = AF_UNSPEC;
if (nifp->source)
nbmaifp = if_lookup_by_name(nifp->source);
switch (ifp->ll_type) {
case ZEBRA_LLT_IPGRE: {
struct in_addr saddr = {0};
netlink_gre_get_info(ifp->ifindex, &nifp->grekey, &nifp->linkidx, &saddr);
debugf(NHRP_DEBUG_IF, "%s: GRE: %x %x %x", ifp->name, nifp->grekey, nifp->linkidx, saddr.s_addr);
if (saddr.s_addr)
sockunion_set(&nbma, AF_INET, (u_char *) &saddr.s_addr, sizeof(saddr.s_addr));
else if (!nbmaifp && nifp->linkidx != IFINDEX_INTERNAL)
nbmaifp = if_lookup_by_index(nifp->linkidx);
}
break;
default:
break;
}
if (nbmaifp)
nbmanifp = nbmaifp->info;
if (nbmaifp != nifp->nbmaifp) {
if (nifp->nbmaifp)
notifier_del(&nifp->nbmanifp_notifier);
nifp->nbmaifp = nbmaifp;
if (nbmaifp) {
notifier_add(&nifp->nbmanifp_notifier, &nbmanifp->notifier_list, nhrp_interface_interface_notifier);
debugf(NHRP_DEBUG_IF, "%s: bound to %s", ifp->name, nbmaifp->name);
}
}
if (nbmaifp) {
if (sockunion_family(&nbma) == AF_UNSPEC)
nbma = nbmanifp->afi[AFI_IP].addr;
nhrp_interface_update_mtu(ifp, AFI_IP);
nhrp_interface_update_source(ifp);
}
if (!sockunion_same(&nbma, &nifp->nbma)) {
nifp->nbma = nbma;
nhrp_interface_update(nifp->ifp);
debugf(NHRP_DEBUG_IF, "%s: NBMA address changed", ifp->name);
notifier_call(&nifp->notifier_list, NOTIFY_INTERFACE_NBMA_CHANGED);
}
nhrp_interface_update(ifp);
}
struct interface * zebra_interface_if_lookup(struct stream *s) {
struct interface *ifp;
u_char ifname_tmp[INTERFACE_NAMSIZ];
/* Read interface name. */
stream_get(ifname_tmp, s, INTERFACE_NAMSIZ);
/* Lookup this by interface index. */
ifp = if_lookup_by_name(ifname_tmp);
/* If such interface does not exist, indicate an error */
if (!ifp) {
return NULL;
}
return ifp;
}
/* Match function should return 1 if match is success else return
zero. */
static route_map_result_t
route_match_interface (void *rule, struct prefix *prefix,
route_map_object_t type, void *object)
{
struct interface *ifp;
struct external_info *ei;
if (type == RMAP_OSPF)
{
ei = object;
ifp = if_lookup_by_name ((char *)rule);
if (ifp == NULL || ifp->ifindex != ei->ifindex)
return RMAP_NOMATCH;
return RMAP_MATCH;
}
return RMAP_NOMATCH;
}
void eigrp_if_rmap_update(struct if_rmap *if_rmap)
{
struct interface *ifp;
struct eigrp_interface *ei, *ei2;
struct listnode *node, *nnode;
struct route_map *rmap;
struct eigrp *e;
ifp = if_lookup_by_name(if_rmap->ifname);
if (ifp == NULL)
return;
ei = NULL;
e = eigrp_lookup();
for (ALL_LIST_ELEMENTS(e->eiflist, node, nnode, ei2)) {
if (strcmp(ei2->ifp->name, ifp->name) == 0) {
ei = ei2;
break;
}
}
if (if_rmap->routemap[IF_RMAP_IN]) {
rmap = route_map_lookup_by_name(if_rmap->routemap[IF_RMAP_IN]);
if (rmap)
ei->routemap[IF_RMAP_IN] = rmap;
else
ei->routemap[IF_RMAP_IN] = NULL;
} else
ei->routemap[EIGRP_FILTER_IN] = NULL;
if (if_rmap->routemap[IF_RMAP_OUT]) {
rmap = route_map_lookup_by_name(if_rmap->routemap[IF_RMAP_OUT]);
if (rmap)
ei->routemap[IF_RMAP_OUT] = rmap;
else
ei->routemap[IF_RMAP_OUT] = NULL;
} else
ei->routemap[EIGRP_FILTER_OUT] = NULL;
}
/* Update source selection. */
static void
bgp_update_source (struct peer *peer)
{
struct interface *ifp;
union sockunion addr;
/* Source is specified with interface name. */
if (peer->update_if)
{
ifp = if_lookup_by_name (peer->update_if);
if (! ifp)
return;
if (bgp_update_address (ifp, &peer->su, &addr))
return;
sockunion_bind (peer->fd, &addr, 0, &addr);
}
/* Source is specified with IP address. */
if (peer->update_source)
sockunion_bind (peer->fd, peer->update_source, 0, peer->update_source);
}
struct interface_FOO *
zebra_interface_add_read (struct stream *s)
{
struct interface_FOO *ifp;
char ifname_tmp[INTERFACE_NAMSIZ];
/* Read interface name. */
stream_get (ifname_tmp, s, INTERFACE_NAMSIZ);
/* Lookup this by interface name. */
ifp = if_lookup_by_name (ifname_tmp);
/* If such interface does not exist, make new one. */
if (! ifp)
ifp = if_create (ifname_tmp, INTERFACE_NAMSIZ);
/* Read interface's index. */
ifp->ifindex = stream_getl (s);
/* Read interface's value. */
ifp->status = stream_getc (s);
ifp->flags = stream_getl (s);
ifp->metric = stream_getl (s);
ifp->mtu = stream_getl (s);
ifp->mtu6 = stream_getl (s);
ifp->bandwidth = stream_getl (s);
#ifdef HAVE_SOCKADDR_DL
stream_get (&ifp->sdl, s, sizeof (ifp->sdl));
#else
ifp->hw_addr_len = stream_getl (s);
if (ifp->hw_addr_len)
stream_get (ifp->hw_addr, s, ifp->hw_addr_len);
#endif /* HAVE_SOCKADDR_DL */
return ifp;
}
/* Update source selection. */
static void
bgp_update_source (struct peer *peer)
{
struct interface *ifp;
struct in_addr *addr;
/* Source is specified with interface name. */
if (peer->update_if)
{
ifp = if_lookup_by_name (peer->update_if);
if (! ifp)
return;
addr = bgp_update_address (ifp);
if (! addr)
return;
bgp_bind_address (peer->fd, addr);
}
/* Source is specified with IP address. */
if (peer->update_source)
sockunion_bind (peer->fd, peer->update_source, 0, peer->update_source);
}
static int
netlink_link_change (struct sockaddr_nl *snl, struct nlmsghdr *h)
{
int len;
struct ifinfomsg *ifi;
struct rtattr *tb[IFLA_MAX + 1];
struct interface *ifp;
char *name;
ifi = NLMSG_DATA (h);
if (!(h->nlmsg_type == RTM_NEWLINK || h->nlmsg_type == RTM_DELLINK))
{
/* If this is not link add/delete message so print warning. */
zlog_warn ("netlink_link_change: wrong kernel message %d\n",
h->nlmsg_type);
return 0;
}
len = h->nlmsg_len - NLMSG_LENGTH (sizeof (struct ifinfomsg));
if (len < 0)
return -1;
/* Looking up interface name. */
memset (tb, 0, sizeof tb);
netlink_parse_rtattr (tb, IFLA_MAX, IFLA_RTA (ifi), len);
#ifdef IFLA_WIRELESS
/* check for wireless messages to ignore */
if ((tb[IFLA_WIRELESS] != NULL) && (ifi->ifi_change == 0))
{
if (IS_DEBUG_HA(kroute, KROUTE))
zlog_debug ("%s: ignoring IFLA_WIRELESS message", __func__);
return 0;
}
#endif /* IFLA_WIRELESS */
if (tb[IFLA_IFNAME] == NULL)
return -1;
name = (char *) RTA_DATA (tb[IFLA_IFNAME]);
/* Add interface. */
if (h->nlmsg_type == RTM_NEWLINK)
{
ifp = if_lookup_by_name (name);
if (ifp == NULL || !CHECK_FLAG (ifp->status, KROUTE_INTERFACE_ACTIVE))
{
if (ifp == NULL)
ifp = if_get_by_name (name);
set_ifindex(ifp, ifi->ifi_index);
ifp->flags = ifi->ifi_flags & 0x0000fffff;
ifp->mtu6 = ifp->mtu = *(int *) RTA_DATA (tb[IFLA_MTU]);
ifp->metric = 1;
netlink_interface_update_hw_addr (tb, ifp);
/* If new link is added. */
if_add_update (ifp);
}
else
{
/* Interface status change. */
set_ifindex(ifp, ifi->ifi_index);
ifp->mtu6 = ifp->mtu = *(int *) RTA_DATA (tb[IFLA_MTU]);
ifp->metric = 1;
netlink_interface_update_hw_addr (tb, ifp);
if (if_is_operative (ifp))
{
ifp->flags = ifi->ifi_flags & 0x0000fffff;
if (!if_is_operative (ifp))
if_down (ifp);
else
/* Must notify client daemons of new interface status. */
kroute_interface_up_update (ifp);
}
else
{
ifp->flags = ifi->ifi_flags & 0x0000fffff;
if (if_is_operative (ifp))
if_up (ifp);
}
}
}
else
{
/* RTM_DELLINK. */
ifp = if_lookup_by_name (name);
if (ifp == NULL)
{
zlog (NULL, LOG_WARNING, "interface %s is deleted but can't find",
name);
return 0;
}
if_delete_update (ifp);
}
return 0;
}
/**gjd : add for Distribute Product , for check interface exist or not
when add interface between master and viace board**/
struct interface *
check_interface_exist_by_name (const char *name)
{
return if_lookup_by_name(name);
}
/* BGP Peer TCP Socket bind to 'update-source' address
*
* Specify the TCP client's source IP address.
* This function must be called before calling connect().
* The source port is set to "any port"
* (i.e., picked by the kernel) unless a user specified it.
*/
s_int32_t
bpn_sock_bind_address (struct bgp_peer *peer,
pal_sock_handle_t sck_fd)
{
struct prefix *if_prefix;
struct interface *ifp;
union sockunion uaddr;
s_int32_t uaddr_len;
s_int32_t ret;
pal_mem_set (&uaddr, 0, sizeof (union sockunion));
uaddr_len = 0;
ret = 0;
/* Ifname is exist. */
if (peer->update_if)
{
ifp = if_lookup_by_name (&BGP_VR.owning_ivr->ifm,
peer->update_if);
if (! ifp)
{
ret = -1;
goto EXIT;
}
if_prefix = if_get_connected_address (ifp, peer->su.sa.sa_family);
if (! if_prefix)
{
ret = -1;
goto EXIT;
}
uaddr.sa.sa_family = if_prefix->family;
if (uaddr.sa.sa_family == AF_INET)
{
uaddr.sin.sin_family = AF_INET;
uaddr_len = sizeof (struct pal_sockaddr_in4);
#ifdef HAVE_SIN_LEN
uaddr.sin.sin_len = pal_hton16 (uaddr_len);
#endif /* HAVE_SIN_LEN */
IPV4_ADDR_COPY (&uaddr.sin.sin_addr, &if_prefix->u.prefix4);
if (peer->sock_port == BGP_PORT_DEFAULT)
uaddr.sin.sin_port =
bpn_get_port_any (AF_INET, SOCK_STREAM, &uaddr.sa);
else
uaddr.sin.sin_port = pal_hton16 (peer->sock_port);
}
#ifdef HAVE_IPV6
else if (BGP_CAP_HAVE_IPV6 && uaddr.sa.sa_family == AF_INET6)
{
uaddr.sin6.sin6_family = AF_INET6;
uaddr_len = sizeof (struct pal_sockaddr_in6);
#ifdef HAVE_SIN_LEN
uaddr.sin6.sin6_len = pal_hton16 (uaddr_len);
#endif /* HAVE_SIN_LEN */
IPV6_ADDR_COPY (&uaddr.sin6.sin6_addr, &if_prefix->u.prefix6);
if (peer->sock_port == BGP_PORT_DEFAULT)
uaddr.sin6.sin6_port =
bpn_get_port_any (AF_INET6, SOCK_STREAM, &uaddr.sa);
else
uaddr.sin6.sin6_port = pal_hton16 (peer->sock_port);
}
#endif /* HAVE_IPV6 */
else
{
if (BGP_DEBUG (events, EVENTS))
zlog_err (&BLG, "%s-%s [NETWORK] bind addr: socket (%d), "
"unknown update-interface family (%d)", peer->host,
BGP_PEER_DIR_STR (peer), sck_fd, uaddr.sa.sa_family);
ret = -1;
goto EXIT;
}
}
else if (peer->update_source)
{
uaddr.sa.sa_family = peer->update_source->sa.sa_family;
if (uaddr.sa.sa_family == AF_INET)
{
uaddr.sin.sin_family = AF_INET;
uaddr_len = sizeof (struct pal_sockaddr_in4);
if (peer->sock_port == BGP_PORT_DEFAULT)
uaddr.sin.sin_port =
bpn_get_port_any (AF_INET, SOCK_STREAM,
&peer->update_source->sa);
else
uaddr.sin.sin_port = pal_hton16 (peer->sock_port);
#ifdef HAVE_SIN_LEN
uaddr.sin.sin_len = pal_hton16 (uaddr_len);
#endif /* HAVE_SIN_LEN */
IPV4_ADDR_COPY (&uaddr.sin.sin_addr,
&peer->update_source->sin.sin_addr);
}
#ifdef HAVE_IPV6
else if (BGP_CAP_HAVE_IPV6 && uaddr.sa.sa_family == AF_INET6)
{
uaddr.sin6.sin6_family = AF_INET6;
uaddr_len = sizeof (struct pal_sockaddr_in6);
if (peer->sock_port == BGP_PORT_DEFAULT)
uaddr.sin6.sin6_port =
bpn_get_port_any (AF_INET6, SOCK_STREAM,
&peer->update_source->sa);
else
uaddr.sin.sin_port = pal_hton16 (peer->sock_port);
#ifdef HAVE_SIN_LEN
uaddr.sin6.sin6_len = pal_hton16 (uaddr_len);
#endif /* HAVE_SIN_LEN */
IPV6_ADDR_COPY (&uaddr.sin6.sin6_addr,
&peer->update_source->sin6.sin6_addr);
}
#endif /* HAVE_IPV6 */
else
{
if (BGP_DEBUG (events, EVENTS))
zlog_err (&BLG, "%s-%s [NETWORK] bind addr: socket (%d), "
"unknown update-address family (%d)", peer->host,
BGP_PEER_DIR_STR (peer), sck_fd, uaddr.sa.sa_family);
ret = -1;
goto EXIT;
}
}
if (uaddr_len)
{
ret = pal_sock_bind (sck_fd, (struct pal_sockaddr *) &uaddr, uaddr_len);
if (ret < 0)
if (BGP_DEBUG (events, EVENTS))
zlog_err (&BLG, "%s-%s [NETWORK] bind addr: socket (%d), bind"
" failed (%d-%s)", peer->host, BGP_PEER_DIR_STR (peer),
sck_fd, errno, pal_strerror (errno));
}
EXIT:
return ret;
}
/* active peer socket setup */
int pim_msdp_sock_connect(struct pim_msdp_peer *mp)
{
int rc;
if (PIM_DEBUG_MSDP_INTERNAL) {
zlog_debug("MSDP peer %s attempt connect%s", mp->key_str,
mp->fd < 0 ? "" : "(dup)");
}
/* if we have an existing connection we need to kill that one
* with this one */
if (mp->fd >= 0) {
if (PIM_DEBUG_MSDP_EVENTS) {
zlog_notice(
"msdp duplicate connect to %s nuke old connection",
mp->key_str);
}
pim_msdp_peer_stop_tcp_conn(mp, false /* chg_state */);
}
/* Make socket for the peer. */
mp->fd = sockunion_socket(&mp->su_peer);
if (mp->fd < 0) {
flog_err_sys(LIB_ERR_SOCKET,
"pim_msdp_socket socket failure: %s",
safe_strerror(errno));
return -1;
}
if (mp->pim->vrf_id != VRF_DEFAULT) {
struct interface *ifp =
if_lookup_by_name(mp->pim->vrf->name, mp->pim->vrf_id);
if (!ifp) {
flog_err(LIB_ERR_INTERFACE,
"%s: Unable to lookup vrf interface: %s",
__PRETTY_FUNCTION__, mp->pim->vrf->name);
return -1;
}
if (pim_socket_bind(mp->fd, ifp)) {
flog_err_sys(LIB_ERR_SOCKET,
"%s: Unable to bind to socket: %s",
__PRETTY_FUNCTION__, safe_strerror(errno));
close(mp->fd);
mp->fd = -1;
return -1;
}
}
set_nonblocking(mp->fd);
/* Set socket send buffer size */
pim_msdp_update_sock_send_buffer_size(mp->fd);
sockopt_reuseaddr(mp->fd);
sockopt_reuseport(mp->fd);
/* source bind */
rc = sockunion_bind(mp->fd, &mp->su_local, 0, &mp->su_local);
if (rc < 0) {
flog_err_sys(LIB_ERR_SOCKET,
"pim_msdp_socket connect bind failure: %s",
safe_strerror(errno));
close(mp->fd);
mp->fd = -1;
return rc;
}
/* Connect to the remote mp. */
return (sockunion_connect(mp->fd, &mp->su_peer,
htons(PIM_MSDP_TCP_PORT), 0));
}
/* global listener for the MSDP well know TCP port */
int pim_msdp_sock_listen(struct pim_instance *pim)
{
int sock;
int socklen;
struct sockaddr_in sin;
int rc;
struct pim_msdp_listener *listener = &pim->msdp.listener;
if (pim->msdp.flags & PIM_MSDPF_LISTENER) {
/* listener already setup */
return 0;
}
sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock < 0) {
flog_err_sys(LIB_ERR_SOCKET, "socket: %s",
safe_strerror(errno));
return sock;
}
memset(&sin, 0, sizeof(struct sockaddr_in));
sin.sin_family = AF_INET;
sin.sin_port = htons(PIM_MSDP_TCP_PORT);
socklen = sizeof(struct sockaddr_in);
#ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
sin.sin_len = socklen;
#endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */
sockopt_reuseaddr(sock);
sockopt_reuseport(sock);
if (pim->vrf_id != VRF_DEFAULT) {
struct interface *ifp =
if_lookup_by_name(pim->vrf->name, pim->vrf_id);
if (!ifp) {
flog_err(LIB_ERR_INTERFACE,
"%s: Unable to lookup vrf interface: %s",
__PRETTY_FUNCTION__, pim->vrf->name);
close(sock);
return -1;
}
if (pim_socket_bind(sock, ifp)) {
flog_err_sys(LIB_ERR_SOCKET,
"%s: Unable to bind to socket: %s",
__PRETTY_FUNCTION__, safe_strerror(errno));
close(sock);
return -1;
}
}
frr_elevate_privs(&pimd_privs) {
/* bind to well known TCP port */
rc = bind(sock, (struct sockaddr *)&sin, socklen);
}
if (rc < 0) {
flog_err_sys(LIB_ERR_SOCKET,
"pim_msdp_socket bind to port %d: %s",
ntohs(sin.sin_port), safe_strerror(errno));
close(sock);
return rc;
}
rc = listen(sock, 3 /* backlog */);
if (rc < 0) {
flog_err_sys(LIB_ERR_SOCKET, "pim_msdp_socket listen: %s",
safe_strerror(errno));
close(sock);
return rc;
}
/* add accept thread */
listener->fd = sock;
memcpy(&listener->su, &sin, socklen);
listener->thread = NULL;
thread_add_read(pim->msdp.master, pim_msdp_sock_accept, pim, sock,
&listener->thread);
pim->msdp.flags |= PIM_MSDPF_LISTENER;
return 0;
}
int
if_getaddrs ()
{
int ret;
struct ifaddrs *ifap;
struct ifaddrs *ifapfree;
struct interface *ifp;
int prefixlen;
ret = getifaddrs (&ifap);
if (ret != 0)
{
#ifdef BRCM_RIP_DEBUG
zlog_err ("getifaddrs(): %s", strerror (errno));
#endif
return -1;
}
for (ifapfree = ifap; ifap; ifap = ifap->ifa_next)
{
ifp = if_lookup_by_name (ifap->ifa_name);
if (ifp == NULL)
{
#ifdef BRCM_RIP_DEBUG
zlog_err ("if_getaddrs(): Can't lookup interface %s\n",
ifap->ifa_name);
#endif
continue;
}
if (ifap->ifa_addr->sa_family == AF_INET)
{
struct sockaddr_in *addr;
struct sockaddr_in *mask;
struct sockaddr_in *dest;
struct in_addr *dest_pnt;
addr = (struct sockaddr_in *) ifap->ifa_addr;
mask = (struct sockaddr_in *) ifap->ifa_netmask;
prefixlen = ip_masklen (mask->sin_addr);
dest_pnt = NULL;
if (ifap->ifa_flags & IFF_POINTOPOINT)
{
dest = (struct sockaddr_in *) ifap->ifa_dstaddr;
dest_pnt = &dest->sin_addr;
}
if (ifap->ifa_flags & IFF_BROADCAST)
{
dest = (struct sockaddr_in *) ifap->ifa_broadaddr;
dest_pnt = &dest->sin_addr;
}
connected_add_ipv4 (ifp, 0, &addr->sin_addr,
prefixlen, dest_pnt, NULL);
}
#ifdef HAVE_IPV6
if (ifap->ifa_addr->sa_family == AF_INET6)
{
struct sockaddr_in6 *addr;
struct sockaddr_in6 *mask;
struct sockaddr_in6 *dest;
struct in6_addr *dest_pnt;
addr = (struct sockaddr_in6 *) ifap->ifa_addr;
mask = (struct sockaddr_in6 *) ifap->ifa_netmask;
prefixlen = ip6_masklen (mask->sin6_addr);
dest_pnt = NULL;
if (ifap->ifa_flags & IFF_POINTOPOINT)
{
if (ifap->ifa_dstaddr)
{
dest = (struct sockaddr_in6 *) ifap->ifa_dstaddr;
dest_pnt = &dest->sin6_addr;
}
}
if (ifap->ifa_flags & IFF_BROADCAST)
{
if (ifap->ifa_broadaddr)
{
dest = (struct sockaddr_in6 *) ifap->ifa_broadaddr;
dest_pnt = &dest->sin6_addr;
}
}
connected_add_ipv6 (ifp, &addr->sin6_addr, prefixlen, dest_pnt);
}
#endif /* HAVE_IPV6 */
}
freeifaddrs (ifapfree);
return 0;
}
int
bgp_nexthop_set (union sockunion *local, union sockunion *remote,
struct bgp_nexthop *nexthop, struct peer *peer)
{
int ret = 0;
struct interface *ifp = NULL;
memset (nexthop, 0, sizeof (struct bgp_nexthop));
if (!local)
return -1;
if (!remote)
return -1;
if (local->sa.sa_family == AF_INET)
{
nexthop->v4 = local->sin.sin_addr;
if (peer->update_if)
ifp = if_lookup_by_name (peer->update_if);
else
ifp = if_lookup_by_ipv4_exact (&local->sin.sin_addr);
}
if (local->sa.sa_family == AF_INET6)
{
if (IN6_IS_ADDR_LINKLOCAL (&local->sin6.sin6_addr))
{
if (peer->ifname)
ifp = if_lookup_by_name (peer->ifname);
}
else if (peer->update_if)
ifp = if_lookup_by_name (peer->update_if);
else
ifp = if_lookup_by_ipv6_exact (&local->sin6.sin6_addr);
}
if (!ifp)
return -1;
nexthop->ifp = ifp;
/* IPv4 connection. */
if (local->sa.sa_family == AF_INET)
{
/* IPv6 nexthop*/
ret = if_get_ipv6_global (ifp, &nexthop->v6_global);
/* There is no global nexthop. */
if (!ret)
if_get_ipv6_local (ifp, &nexthop->v6_global);
else
if_get_ipv6_local (ifp, &nexthop->v6_local);
}
/* IPv6 connection. */
if (local->sa.sa_family == AF_INET6)
{
struct interface *direct = NULL;
/* IPv4 nexthop. */
ret = if_get_ipv4_address(ifp, &nexthop->v4);
if (!ret && peer->local_id.s_addr)
nexthop->v4 = peer->local_id;
/* Global address*/
if (! IN6_IS_ADDR_LINKLOCAL (&local->sin6.sin6_addr))
{
memcpy (&nexthop->v6_global, &local->sin6.sin6_addr,
IPV6_MAX_BYTELEN);
/* If directory connected set link-local address. */
direct = if_lookup_by_ipv6 (&remote->sin6.sin6_addr);
if (direct)
if_get_ipv6_local (ifp, &nexthop->v6_local);
}
else
/* Link-local address. */
{
ret = if_get_ipv6_global (ifp, &nexthop->v6_global);
/* If there is no global address. Set link-local address as
global. I know this break RFC specification... */
if (!ret)
memcpy (&nexthop->v6_global, &local->sin6.sin6_addr,
IPV6_MAX_BYTELEN);
else
memcpy (&nexthop->v6_local, &local->sin6.sin6_addr,
IPV6_MAX_BYTELEN);
}
}
if (IN6_IS_ADDR_LINKLOCAL (&local->sin6.sin6_addr) ||
if_lookup_by_ipv6 (&remote->sin6.sin6_addr))
peer->shared_network = 1;
else
peer->shared_network = 0;
/* KAME stack specific treatment. */
#ifdef KAME
if (IN6_IS_ADDR_LINKLOCAL (&nexthop->v6_global)
&& IN6_LINKLOCAL_IFINDEX (nexthop->v6_global))
{
SET_IN6_LINKLOCAL_IFINDEX (nexthop->v6_global, 0);
}
if (IN6_IS_ADDR_LINKLOCAL (&nexthop->v6_local)
&& IN6_LINKLOCAL_IFINDEX (nexthop->v6_local))
{
SET_IN6_LINKLOCAL_IFINDEX (nexthop->v6_local, 0);
}
#endif /* KAME */
return ret;
}
/* Get interface by name if given name interface doesn't exist create
one. */
struct interface * if_get_by_name (const char *name)
{
struct interface *ifp;
return ((ifp = if_lookup_by_name(name)) != NULL) ? ifp : NULL;
}
void eigrp_zebra_init(void)
{
struct zclient_options opt = {.receive_notify = false};
zclient = zclient_new_notify(master, &opt);
zclient_init(zclient, ZEBRA_ROUTE_EIGRP, 0, &eigrpd_privs);
zclient->zebra_connected = eigrp_zebra_connected;
zclient->router_id_update = eigrp_router_id_update_zebra;
zclient->interface_add = eigrp_interface_add;
zclient->interface_delete = eigrp_interface_delete;
zclient->interface_up = eigrp_interface_state_up;
zclient->interface_down = eigrp_interface_state_down;
zclient->interface_address_add = eigrp_interface_address_add;
zclient->interface_address_delete = eigrp_interface_address_delete;
zclient->redistribute_route_add = eigrp_zebra_read_route;
zclient->redistribute_route_del = eigrp_zebra_read_route;
zclient->route_notify_owner = eigrp_zebra_route_notify_owner;
}
/* Zebra route add and delete treatment. */
static int eigrp_zebra_read_route(int command, struct zclient *zclient,
zebra_size_t length, vrf_id_t vrf_id)
{
struct zapi_route api;
struct eigrp *eigrp;
if (zapi_route_decode(zclient->ibuf, &api) < 0)
return -1;
if (IPV4_NET127(ntohl(api.prefix.u.prefix4.s_addr)))
return 0;
eigrp = eigrp_lookup();
if (eigrp == NULL)
return 0;
if (command == ZEBRA_REDISTRIBUTE_ROUTE_ADD) {
} else /* if (command == ZEBRA_REDISTRIBUTE_ROUTE_DEL) */
{
}
return 0;
}
/* Inteface addition message from zebra. */
static int eigrp_interface_add(int command, struct zclient *zclient,
zebra_size_t length, vrf_id_t vrf_id)
{
struct interface *ifp;
struct eigrp_interface *ei;
ifp = zebra_interface_add_read(zclient->ibuf, vrf_id);
if (!ifp->info)
return 0;
ei = ifp->info;
ei->params.type = eigrp_default_iftype(ifp);
eigrp_if_update(ifp);
return 0;
}
static int eigrp_interface_delete(int command, struct zclient *zclient,
zebra_size_t length, vrf_id_t vrf_id)
{
struct interface *ifp;
struct stream *s;
s = zclient->ibuf;
/* zebra_interface_state_read () updates interface structure in iflist
*/
ifp = zebra_interface_state_read(s, vrf_id);
if (ifp == NULL)
return 0;
if (if_is_up(ifp))
zlog_warn("Zebra: got delete of %s, but interface is still up",
ifp->name);
if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE))
zlog_debug(
"Zebra: interface delete %s index %d flags %llx metric %d mtu %d",
ifp->name, ifp->ifindex, (unsigned long long)ifp->flags,
ifp->metric, ifp->mtu);
if (ifp->info)
eigrp_if_free(ifp->info, INTERFACE_DOWN_BY_ZEBRA);
if_set_index(ifp, IFINDEX_INTERNAL);
return 0;
}
static int eigrp_interface_address_add(int command, struct zclient *zclient,
zebra_size_t length, vrf_id_t vrf_id)
{
struct connected *c;
c = zebra_interface_address_read(command, zclient->ibuf, vrf_id);
if (c == NULL)
return 0;
if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE)) {
char buf[128];
prefix2str(c->address, buf, sizeof(buf));
zlog_debug("Zebra: interface %s address add %s", c->ifp->name,
buf);
}
eigrp_if_update(c->ifp);
return 0;
}
static int eigrp_interface_address_delete(int command, struct zclient *zclient,
zebra_size_t length, vrf_id_t vrf_id)
{
struct connected *c;
struct interface *ifp;
struct eigrp_interface *ei;
c = zebra_interface_address_read(command, zclient->ibuf, vrf_id);
if (c == NULL)
return 0;
if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE)) {
char buf[128];
prefix2str(c->address, buf, sizeof(buf));
zlog_debug("Zebra: interface %s address delete %s",
c->ifp->name, buf);
}
ifp = c->ifp;
ei = ifp->info;
if (!ei)
return 0;
/* Call interface hook functions to clean up */
eigrp_if_free(ei, INTERFACE_DOWN_BY_ZEBRA);
connected_free(c);
return 0;
}
static int eigrp_interface_state_up(int command, struct zclient *zclient,
zebra_size_t length, vrf_id_t vrf_id)
{
struct interface *ifp;
ifp = zebra_interface_if_lookup(zclient->ibuf);
if (ifp == NULL)
return 0;
/* Interface is already up. */
if (if_is_operative(ifp)) {
/* Temporarily keep ifp values. */
struct interface if_tmp;
memcpy(&if_tmp, ifp, sizeof(struct interface));
zebra_interface_if_set_value(zclient->ibuf, ifp);
if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE))
zlog_debug("Zebra: Interface[%s] state update.",
ifp->name);
if (if_tmp.bandwidth != ifp->bandwidth) {
if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE))
zlog_debug(
"Zebra: Interface[%s] bandwidth change %d -> %d.",
ifp->name, if_tmp.bandwidth,
ifp->bandwidth);
// eigrp_if_recalculate_output_cost (ifp);
}
if (if_tmp.mtu != ifp->mtu) {
if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE))
zlog_debug(
"Zebra: Interface[%s] MTU change %u -> %u.",
ifp->name, if_tmp.mtu, ifp->mtu);
/* Must reset the interface (simulate down/up) when MTU
* changes. */
eigrp_if_reset(ifp);
}
return 0;
}
zebra_interface_if_set_value(zclient->ibuf, ifp);
if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE))
zlog_debug("Zebra: Interface[%s] state change to up.",
ifp->name);
if (ifp->info)
eigrp_if_up(ifp->info);
return 0;
}
static int eigrp_interface_state_down(int command, struct zclient *zclient,
zebra_size_t length, vrf_id_t vrf_id)
{
struct interface *ifp;
ifp = zebra_interface_state_read(zclient->ibuf, vrf_id);
if (ifp == NULL)
return 0;
if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE))
zlog_debug("Zebra: Interface[%s] state change to down.",
ifp->name);
if (ifp->info)
eigrp_if_down(ifp->info);
return 0;
}
static struct interface *zebra_interface_if_lookup(struct stream *s)
{
char ifname_tmp[INTERFACE_NAMSIZ];
/* Read interface name. */
stream_get(ifname_tmp, s, INTERFACE_NAMSIZ);
/* And look it up. */
return if_lookup_by_name(ifname_tmp, VRF_DEFAULT);
}
/*
* Handle struct if_msghdr obtained from reading routing socket or
* sysctl (from interface_list). There may or may not be sockaddrs
* present after the header.
*/
int
ifm_read (struct if_msghdr *ifm)
{
struct interface *ifp = NULL;
char ifname[IFNAMSIZ];
short ifnlen = 0;
caddr_t *cp;
/* terminate ifname at head (for strnlen) and tail (for safety) */
ifname[IFNAMSIZ - 1] = '\0';
/* paranoia: sanity check structure */
if (ifm->ifm_msglen < sizeof(struct if_msghdr))
{
zlog_err ("ifm_read: ifm->ifm_msglen %d too short\n",
ifm->ifm_msglen);
return -1;
}
/*
* Check for a sockaddr_dl following the message. First, point to
* where a socakddr might be if one follows the message.
*/
cp = (void *)(ifm + 1);
#ifdef SUNOS_5
/*
* XXX This behavior should be narrowed to only the kernel versions
* for which the structures returned do not match the headers.
*
* if_msghdr_t on 64 bit kernels in Solaris 9 and earlier versions
* is 12 bytes larger than the 32 bit version.
*/
if (((struct sockaddr *) cp)->sa_family == AF_UNSPEC)
cp = cp + 12;
#endif
RTA_ADDR_GET (NULL, RTA_DST, ifm->ifm_addrs, cp);
RTA_ADDR_GET (NULL, RTA_GATEWAY, ifm->ifm_addrs, cp);
RTA_ATTR_GET (NULL, RTA_NETMASK, ifm->ifm_addrs, cp);
RTA_ADDR_GET (NULL, RTA_GENMASK, ifm->ifm_addrs, cp);
RTA_NAME_GET (ifname, RTA_IFP, ifm->ifm_addrs, cp, ifnlen);
RTA_ADDR_GET (NULL, RTA_IFA, ifm->ifm_addrs, cp);
RTA_ADDR_GET (NULL, RTA_AUTHOR, ifm->ifm_addrs, cp);
RTA_ADDR_GET (NULL, RTA_BRD, ifm->ifm_addrs, cp);
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug ("%s: sdl ifname %s", __func__, (ifnlen ? ifname : "(nil)"));
/*
* Look up on ifindex first, because ifindices are the primary handle for
* interfaces across the user/kernel boundary, for most systems. (Some
* messages, such as up/down status changes on NetBSD, do not include a
* sockaddr_dl).
*/
if ( (ifp = if_lookup_by_index (ifm->ifm_index)) != NULL )
{
/* we have an ifp, verify that the name matches as some systems,
* eg Solaris, have a 1:many association of ifindex:ifname
* if they dont match, we dont have the correct ifp and should
* set it back to NULL to let next check do lookup by name
*/
if (ifnlen && (strncmp (ifp->name, ifname, IFNAMSIZ) != 0) )
{
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug ("%s: ifp name %s doesnt match sdl name %s",
__func__, ifp->name, ifname);
ifp = NULL;
}
}
/*
* If we dont have an ifp, try looking up by name. Particularly as some
* systems (Solaris) have a 1:many mapping of ifindex:ifname - the ifname
* is therefore our unique handle to that interface.
*
* Interfaces specified in the configuration file for which the ifindex
* has not been determined will have ifindex == IFINDEX_INTERNAL, and such
* interfaces are found by this search, and then their ifindex values can
* be filled in.
*/
if ( (ifp == NULL) && ifnlen)
ifp = if_lookup_by_name (ifname);
/*
* If ifp still does not exist or has an invalid index (IFINDEX_INTERNAL),
* create or fill in an interface.
*/
if ((ifp == NULL) || (ifp->ifindex == IFINDEX_INTERNAL))
{
/*
* To create or fill in an interface, a sockaddr_dl (via
* RTA_IFP) is required.
*/
if (!ifnlen)
{
zlog_warn ("Interface index %d (new) missing ifname\n",
ifm->ifm_index);
return -1;
}
#ifndef RTM_IFANNOUNCE
/* Down->Down interface should be ignored here.
* See further comment below.
*/
if (!CHECK_FLAG (ifm->ifm_flags, IFF_UP))
return 0;
#endif /* !RTM_IFANNOUNCE */
if (ifp == NULL)
{
/* Interface that zebra was not previously aware of, so create. */
ifp = if_create (ifname, ifnlen);
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug ("%s: creating ifp for ifindex %d",
__func__, ifm->ifm_index);
}
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug ("%s: updated/created ifp, ifname %s, ifindex %d",
__func__, ifp->name, ifp->ifindex);
/*
* Fill in newly created interface structure, or larval
* structure with ifindex IFINDEX_INTERNAL.
*/
ifp->ifindex = ifm->ifm_index;
#ifdef HAVE_BSD_LINK_DETECT /* translate BSD kernel msg for link-state */
bsd_linkdetect_translate(ifm);
#endif /* HAVE_BSD_LINK_DETECT */
if_flags_update (ifp, ifm->ifm_flags);
#if defined(__bsdi__)
if_kvm_get_mtu (ifp);
#else
if_get_mtu (ifp);
#endif /* __bsdi__ */
if_get_metric (ifp);
if_add_update (ifp);
}
else
/*
* Interface structure exists. Adjust stored flags from
* notification. If interface has up->down or down->up
* transition, call state change routines (to adjust routes,
* notify routing daemons, etc.). (Other flag changes are stored
* but apparently do not trigger action.)
*/
{
if (ifp->ifindex != ifm->ifm_index)
{
zlog_warn ("%s: index mismatch, ifname %s, ifp index %d, "
"ifm index %d",
__func__, ifp->name, ifp->ifindex, ifm->ifm_index);
return -1;
}
#ifdef HAVE_BSD_LINK_DETECT /* translate BSD kernel msg for link-state */
bsd_linkdetect_translate(ifm);
#endif /* HAVE_BSD_LINK_DETECT */
/* update flags and handle operative->inoperative transition, if any */
if_flags_update (ifp, ifm->ifm_flags);
#ifndef RTM_IFANNOUNCE
if (!if_is_up (ifp))
{
/* No RTM_IFANNOUNCE on this platform, so we can never
* distinguish between ~IFF_UP and delete. We must presume
* it has been deleted.
* Eg, Solaris will not notify us of unplumb.
*
* XXX: Fixme - this should be runtime detected
* So that a binary compiled on a system with IFANNOUNCE
* will still behave correctly if run on a platform without
*/
if_delete_update (ifp);
}
#endif /* RTM_IFANNOUNCE */
if (if_is_up (ifp))
{
#if defined(__bsdi__)
if_kvm_get_mtu (ifp);
#else
if_get_mtu (ifp);
#endif /* __bsdi__ */
if_get_metric (ifp);
}
}
#ifdef HAVE_NET_RT_IFLIST
ifp->stats = ifm->ifm_data;
#endif /* HAVE_NET_RT_IFLIST */
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug ("%s: interface %s index %d",
__func__, ifp->name, ifp->ifindex);
return 0;
}
/*
* Obtain the BGP instance that the incoming connection should be processed
* against. This is important because more than one VRF could be using the
* same IP address space. The instance is got by obtaining the device to
* which the incoming connection is bound to. This could either be a VRF
* or it could be an interface, which in turn determines the VRF.
*/
static int bgp_get_instance_for_inc_conn(int sock, struct bgp **bgp_inst)
{
#ifndef SO_BINDTODEVICE
/* only Linux has SO_BINDTODEVICE, but we're in Linux-specific code here
* anyway since the assumption is that the interface name returned by
* getsockopt() is useful in identifying the VRF, particularly with
* Linux's
* VRF l3master device. The whole mechanism is specific to Linux, so...
* when other platforms add VRF support, this will need handling here as
* well. (or, some restructuring) */
*bgp_inst = bgp_get_default();
return !*bgp_inst;
#else
char name[VRF_NAMSIZ + 1];
socklen_t name_len = VRF_NAMSIZ;
struct bgp *bgp;
int rc;
struct listnode *node, *nnode;
*bgp_inst = NULL;
name[0] = '\0';
rc = getsockopt(sock, SOL_SOCKET, SO_BINDTODEVICE, name, &name_len);
if (rc != 0) {
#if defined(HAVE_CUMULUS)
flog_err(EC_LIB_SOCKET,
"[Error] BGP SO_BINDTODEVICE get failed (%s), sock %d",
safe_strerror(errno), sock);
return -1;
#endif
}
if (!strlen(name)) {
*bgp_inst = bgp_get_default();
return 0; /* default instance. */
}
/* First try match to instance; if that fails, check for interfaces. */
bgp = bgp_lookup_by_name(name);
if (bgp) {
if (!bgp->vrf_id) // unexpected
return -1;
*bgp_inst = bgp;
return 0;
}
/* TODO - This will be optimized once interfaces move into the NS */
for (ALL_LIST_ELEMENTS(bm->bgp, node, nnode, bgp)) {
struct interface *ifp;
if (bgp->inst_type == BGP_INSTANCE_TYPE_VIEW)
continue;
ifp = if_lookup_by_name(name, bgp->vrf_id);
if (ifp) {
*bgp_inst = bgp;
return 0;
}
}
/* We didn't match to either an instance or an interface. */
return -1;
#endif
}
int
netlink_link_change (struct sockaddr_nl *snl, struct nlmsghdr *h)
{
int len;
struct ifinfomsg *ifi;
struct rtattr *tb [IFLA_MAX + 1];
struct interface *ifp;
char *name;
ifi = NLMSG_DATA (h);
if (! (h->nlmsg_type == RTM_NEWLINK || h->nlmsg_type == RTM_DELLINK))
{
/* If this is not link add/delete message so print warning. */
zlog_warn ("netlink_link_change: wrong kernel message %d\n",
h->nlmsg_type);
return 0;
}
len = h->nlmsg_len - NLMSG_LENGTH (sizeof (struct ifinfomsg));
if (len < 0)
return -1;
/* Looking up interface name. */
memset (tb, 0, sizeof tb);
netlink_parse_rtattr (tb, IFLA_MAX, IFLA_RTA (ifi), len);
if (tb[IFLA_IFNAME] == NULL)
return -1;
name = (char *)RTA_DATA(tb[IFLA_IFNAME]);
/* Add interface. */
if (h->nlmsg_type == RTM_NEWLINK)
{
ifp = if_lookup_by_name (name);
if (ifp == NULL || ! CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE))
{
if (ifp == NULL)
ifp = if_get_by_name (name);
ifp->ifindex = ifi->ifi_index;
ifp->flags = ifi->ifi_flags & 0x0000fffff;
ifp->mtu = *(int *)RTA_DATA (tb[IFLA_MTU]);
ifp->metric = 1;
/* If new link is added. */
if_add_update(ifp);
}
else
{
/* Interface status change. */
ifp->ifindex = ifi->ifi_index;
ifp->mtu = *(int *)RTA_DATA (tb[IFLA_MTU]);
ifp->metric = 1;
if (if_is_up (ifp))
{
ifp->flags = ifi->ifi_flags & 0x0000fffff;
if (! if_is_up (ifp))
if_down (ifp);
}
else
{
ifp->flags = ifi->ifi_flags & 0x0000fffff;
if (if_is_up (ifp))
if_up (ifp);
}
}
}
else
{
/* RTM_DELLINK. */
ifp = if_lookup_by_name (name);
if (ifp == NULL)
{
zlog (NULL, LOG_WARNING, "interface %s is deleted but can't find",
ifp->name);
return 0;
}
if_delete_update (ifp);
}
return 0;
}
static int
if_getaddrs (void)
{
int ret;
struct ifaddrs *ifap;
struct ifaddrs *ifapfree;
struct interface *ifp;
int prefixlen;
ret = getifaddrs (&ifap);
if (ret != 0)
{
zlog_err ("getifaddrs(): %s", safe_strerror (errno));
return -1;
}
for (ifapfree = ifap; ifap; ifap = ifap->ifa_next)
{
if (ifap->ifa_addr == NULL)
{
zlog_err ("%s: nonsensical ifaddr with NULL ifa_addr, ifname %s",
__func__, (ifap->ifa_name ? ifap->ifa_name : "(null)"));
continue;
}
ifp = if_lookup_by_name (ifap->ifa_name);
if (ifp == NULL)
{
zlog_err ("if_getaddrs(): Can't lookup interface %s\n",
ifap->ifa_name);
continue;
}
if (ifap->ifa_addr->sa_family == AF_INET)
{
struct sockaddr_in *addr;
struct sockaddr_in *mask;
struct sockaddr_in *dest;
struct in_addr *dest_pnt;
addr = (struct sockaddr_in *) ifap->ifa_addr;
mask = (struct sockaddr_in *) ifap->ifa_netmask;
prefixlen = ip_masklen (mask->sin_addr);
dest_pnt = NULL;
if (ifap->ifa_flags & IFF_POINTOPOINT)
{
dest = (struct sockaddr_in *) ifap->ifa_dstaddr;
dest_pnt = &dest->sin_addr;
}
if (ifap->ifa_flags & IFF_BROADCAST)
{
dest = (struct sockaddr_in *) ifap->ifa_broadaddr;
dest_pnt = &dest->sin_addr;
}
connected_add_ipv4 (ifp, 0, &addr->sin_addr,
prefixlen, dest_pnt, NULL);
}
#ifdef HAVE_IPV6
if (ifap->ifa_addr->sa_family == AF_INET6)
{
struct sockaddr_in6 *addr;
struct sockaddr_in6 *mask;
struct sockaddr_in6 *dest;
struct in6_addr *dest_pnt;
addr = (struct sockaddr_in6 *) ifap->ifa_addr;
mask = (struct sockaddr_in6 *) ifap->ifa_netmask;
prefixlen = ip6_masklen (mask->sin6_addr);
dest_pnt = NULL;
if (ifap->ifa_flags & IFF_POINTOPOINT)
{
if (ifap->ifa_dstaddr)
{
dest = (struct sockaddr_in6 *) ifap->ifa_dstaddr;
dest_pnt = &dest->sin6_addr;
}
}
if (ifap->ifa_flags & IFF_BROADCAST)
{
if (ifap->ifa_broadaddr)
{
dest = (struct sockaddr_in6 *) ifap->ifa_broadaddr;
dest_pnt = &dest->sin6_addr;
}
}
#if defined(KAME)
if (IN6_IS_ADDR_LINKLOCAL(&addr->sin6_addr))
{
addr->sin6_scope_id =
ntohs(*(u_int16_t *)&addr->sin6_addr.s6_addr[2]);
addr->sin6_addr.s6_addr[2] = addr->sin6_addr.s6_addr[3] = 0;
}
#endif
connected_add_ipv6 (ifp, &addr->sin6_addr, prefixlen,
dest_pnt, NULL);
}
#endif /* HAVE_IPV6 */
}
freeifaddrs (ifapfree);
return 0;
}
