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Merge pull request #3918 from opensourcerouting/bfd-bug-fixes

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bfdd: bug fixes
This commit is contained in:
Donald Sharp 2019-03-12 19:08:17 -04:00 committed by GitHub
commit 29d894affc
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GPG Key ID: 4AEE18F83AFDEB23
34 changed files with 1397 additions and 534 deletions
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543
bfdd/bfd.c
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@ -36,7 +36,9 @@ DEFINE_QOBJ_TYPE(bfd_session);
/*
* Prototypes
*/
static struct bfd_session *bs_peer_waiting_find(struct bfd_peer_cfg *bpc);
void gen_bfd_key(struct bfd_key *key, struct sockaddr_any *peer,
struct sockaddr_any *local, bool mhop, const char *ifname,
const char *vrfname);
static uint32_t ptm_bfd_gen_ID(void);
static void ptm_bfd_echo_xmt_TO(struct bfd_session *bfd);
@ -52,66 +54,47 @@ static void bs_down_handler(struct bfd_session *bs, int nstate);
static void bs_init_handler(struct bfd_session *bs, int nstate);
static void bs_up_handler(struct bfd_session *bs, int nstate);
/* Zeroed array with the size of an IPv6 address. */
struct in6_addr zero_addr;
/*
* Functions
*/
static struct bfd_session *bs_peer_waiting_find(struct bfd_peer_cfg *bpc)
void gen_bfd_key(struct bfd_key *key, struct sockaddr_any *peer,
struct sockaddr_any *local, bool mhop, const char *ifname,
const char *vrfname)
{
struct bfd_session_observer *bso;
struct bfd_session *bs = NULL;
bool is_shop, is_ipv4;
TAILQ_FOREACH(bso, &bglobal.bg_obslist, bso_entry) {
bs = bso->bso_bs;
is_shop = !BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH);
is_ipv4 = !BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_IPV6);
/* Quick checks first. */
if (is_shop != (!bpc->bpc_mhop))
continue;
if (is_ipv4 != bpc->bpc_ipv4)
continue;
/*
* Slow lookup without hash because we don't have all
* information yet.
*/
if (is_shop) {
if (strcmp(bs->ifname, bpc->bpc_localif))
continue;
if (memcmp(&bs->shop.peer, &bpc->bpc_peer,
sizeof(bs->shop.peer)))
continue;
break;
}
if (strcmp(bs->vrfname, bpc->bpc_vrfname))
continue;
if (memcmp(&bs->mhop.peer, &bpc->bpc_peer,
sizeof(bs->mhop.peer)))
continue;
if (memcmp(&bs->mhop.local, &bpc->bpc_local,
sizeof(bs->mhop.local)))
continue;
memset(key, 0, sizeof(*key));
switch (peer->sa_sin.sin_family) {
case AF_INET:
key->family = AF_INET;
memcpy(&key->peer, &peer->sa_sin.sin_addr,
sizeof(peer->sa_sin.sin_addr));
memcpy(&key->local, &local->sa_sin.sin_addr,
sizeof(local->sa_sin.sin_addr));
break;
case AF_INET6:
key->family = AF_INET6;
memcpy(&key->peer, &peer->sa_sin6.sin6_addr,
sizeof(peer->sa_sin6.sin6_addr));
memcpy(&key->local, &local->sa_sin6.sin6_addr,
sizeof(local->sa_sin6.sin6_addr));
break;
}
if (bso == NULL)
bs = NULL;
return bs;
key->mhop = mhop;
if (ifname && ifname[0])
strlcpy(key->ifname, ifname, sizeof(key->ifname));
if (vrfname && vrfname[0])
strlcpy(key->vrfname, vrfname, sizeof(key->vrfname));
}
struct bfd_session *bs_peer_find(struct bfd_peer_cfg *bpc)
{
struct bfd_session *bs;
struct peer_label *pl;
struct interface *ifp;
struct vrf *vrf;
struct bfd_mhop_key mhop;
struct bfd_shop_key shop;
struct bfd_key key;
/* Try to find label first. */
if (bpc->bpc_has_label) {
@ -123,38 +106,10 @@ struct bfd_session *bs_peer_find(struct bfd_peer_cfg *bpc)
}
/* Otherwise fallback to peer/local hash lookup. */
if (bpc->bpc_mhop) {
memset(&mhop, 0, sizeof(mhop));
mhop.peer = bpc->bpc_peer;
mhop.local = bpc->bpc_local;
if (bpc->bpc_has_vrfname) {
vrf = vrf_lookup_by_name(bpc->bpc_vrfname);
if (vrf == NULL)
return NULL;
gen_bfd_key(&key, &bpc->bpc_peer, &bpc->bpc_local, bpc->bpc_mhop,
bpc->bpc_localif, bpc->bpc_vrfname);
mhop.vrfid = vrf->vrf_id;
}
bs = bfd_mhop_lookup(mhop);
} else {
memset(&shop, 0, sizeof(shop));
shop.peer = bpc->bpc_peer;
if (bpc->bpc_has_localif) {
ifp = if_lookup_by_name_all_vrf(bpc->bpc_localif);
if (ifp == NULL)
return NULL;
shop.ifindex = ifp->ifindex;
}
bs = bfd_shop_lookup(shop);
}
if (bs != NULL)
return bs;
/* Search for entries that are incomplete. */
return bs_peer_waiting_find(bpc);
return bfd_key_lookup(key);
}
/*
@ -165,7 +120,6 @@ struct bfd_session *bs_peer_find(struct bfd_peer_cfg *bpc)
*/
int bfd_session_enable(struct bfd_session *bs)
{
struct sockaddr_in6 *sin6;
struct interface *ifp = NULL;
struct vrf *vrf = NULL;
int psock;
@ -174,8 +128,8 @@ int bfd_session_enable(struct bfd_session *bs)
* If the interface or VRF doesn't exist, then we must register
* the session but delay its start.
*/
if (bs->ifname[0] != 0) {
ifp = if_lookup_by_name_all_vrf(bs->ifname);
if (bs->key.ifname[0]) {
ifp = if_lookup_by_name_all_vrf(bs->key.ifname);
if (ifp == NULL) {
log_error(
"session-enable: specified interface doesn't exists.");
@ -184,15 +138,17 @@ int bfd_session_enable(struct bfd_session *bs)
vrf = vrf_lookup_by_id(ifp->vrf_id);
if (vrf == NULL) {
log_error("session-enable: specified VRF doesn't exists.");
log_error(
"session-enable: specified VRF doesn't exists.");
return 0;
}
}
if (bs->vrfname[0] != 0) {
vrf = vrf_lookup_by_name(bs->vrfname);
if (bs->key.vrfname[0]) {
vrf = vrf_lookup_by_name(bs->key.vrfname);
if (vrf == NULL) {
log_error("session-enable: specified VRF doesn't exists.");
log_error(
"session-enable: specified VRF doesn't exists.");
return 0;
}
}
@ -202,26 +158,15 @@ int bfd_session_enable(struct bfd_session *bs)
if (bs->vrf == NULL)
bs->vrf = vrf_lookup_by_id(VRF_DEFAULT);
if (bs->ifname[0] != 0 &&
BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH) == 0)
if (bs->key.ifname[0]
&& BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH) == 0)
bs->ifp = ifp;
/* Set the IPv6 scope id for link-local addresses. */
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_IPV6)) {
sin6 = &bs->mhop.peer.sa_sin6;
if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr))
sin6->sin6_scope_id = bs->ifp != NULL
? bs->ifp->ifindex
: IFINDEX_INTERNAL;
sin6 = &bs->mhop.local.sa_sin6;
if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr))
sin6->sin6_scope_id = bs->ifp != NULL
? bs->ifp->ifindex
: IFINDEX_INTERNAL;
bs->local_ip.sa_sin6 = *sin6;
bs->local_address.sa_sin6 = *sin6;
/* Sanity check: don't leak open sockets. */
if (bs->sock != -1) {
zlog_debug("session-enable: previous socket open");
close(bs->sock);
bs->sock = -1;
}
/*
@ -232,11 +177,11 @@ int bfd_session_enable(struct bfd_session *bs)
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_IPV6) == 0) {
psock = bp_peer_socket(bs);
if (psock == -1)
return -1;
return 0;
} else {
psock = bp_peer_socketv6(bs);
if (psock == -1)
return -1;
return 0;
}
/*
@ -247,25 +192,6 @@ int bfd_session_enable(struct bfd_session *bs)
bfd_recvtimer_update(bs);
ptm_bfd_start_xmt_timer(bs, false);
/* Registrate session into data structures. */
bs->discrs.my_discr = ptm_bfd_gen_ID();
bfd_id_insert(bs);
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH)) {
if (vrf != NULL)
bs->mhop.vrfid = vrf->vrf_id;
else
bs->mhop.vrfid = VRF_DEFAULT;
bfd_mhop_insert(bs);
} else {
if (ifp != NULL)
bs->shop.ifindex = ifp->ifindex;
else
bs->shop.ifindex = IFINDEX_INTERNAL;
bfd_shop_insert(bs);
}
return 0;
}
@ -288,13 +214,6 @@ void bfd_session_disable(struct bfd_session *bs)
bfd_echo_recvtimer_delete(bs);
bfd_xmttimer_delete(bs);
bfd_echo_xmttimer_delete(bs);
/* Unregister session from hashes to avoid unwanted activation. */
bfd_id_delete(bs->discrs.my_discr);
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH))
bfd_mhop_delete(bs->mhop);
else
bfd_shop_delete(bs->shop);
}
static uint32_t ptm_bfd_gen_ID(void)
@ -438,21 +357,20 @@ static struct bfd_session *bfd_find_disc(struct sockaddr_any *sa,
if (bs == NULL)
return NULL;
/* Remove unused fields. */
switch (sa->sa_sin.sin_family) {
switch (bs->key.family) {
case AF_INET:
sa->sa_sin.sin_port = 0;
if (memcmp(sa, &bs->shop.peer, sizeof(sa->sa_sin)) == 0)
return bs;
if (memcmp(&sa->sa_sin.sin_addr, &bs->key.peer,
sizeof(sa->sa_sin.sin_addr)))
return NULL;
break;
case AF_INET6:
sa->sa_sin6.sin6_port = 0;
if (memcmp(sa, &bs->shop.peer, sizeof(sa->sa_sin6)) == 0)
return bs;
if (memcmp(&sa->sa_sin6.sin6_addr, &bs->key.peer,
sizeof(sa->sa_sin6.sin6_addr)))
return NULL;
break;
}
return NULL;
return bs;
}
struct bfd_session *ptm_bfd_sess_find(struct bfd_pkt *cp,
@ -461,32 +379,30 @@ struct bfd_session *ptm_bfd_sess_find(struct bfd_pkt *cp,
ifindex_t ifindex, vrf_id_t vrfid,
bool is_mhop)
{
struct bfd_session *l_bfd = NULL;
struct bfd_mhop_key mhop;
struct bfd_shop_key shop;
struct interface *ifp;
struct vrf *vrf;
struct bfd_key key;
/* Find our session using the ID signaled by the remote end. */
if (cp->discrs.remote_discr)
return bfd_find_disc(peer, ntohl(cp->discrs.remote_discr));
/* Search for session without using discriminator. */
if (is_mhop) {
memset(&mhop, 0, sizeof(mhop));
mhop.peer = *peer;
mhop.local = *local;
mhop.vrfid = vrfid;
ifp = if_lookup_by_index(ifindex, vrfid);
if (vrfid == VRF_DEFAULT) {
/*
* Don't use the default vrf, otherwise we won't find
* sessions that doesn't specify it.
*/
vrf = NULL;
} else
vrf = vrf_lookup_by_id(vrfid);
l_bfd = bfd_mhop_lookup(mhop);
} else {
memset(&shop, 0, sizeof(shop));
shop.peer = *peer;
shop.ifindex = ifindex;
l_bfd = bfd_shop_lookup(shop);
}
gen_bfd_key(&key, peer, local, is_mhop, ifp ? ifp->name : NULL,
vrf ? vrf->name : NULL);
/* XXX maybe remoteDiscr should be checked for remoteHeard cases. */
return l_bfd;
return bfd_key_lookup(key);
}
int bfd_xmt_cb(struct thread *t)
@ -701,6 +617,9 @@ static void bfd_session_free(struct bfd_session *bs)
bfd_session_disable(bs);
bfd_key_delete(bs->key);
bfd_id_delete(bs->discrs.my_discr);
/* Remove observer if any. */
TAILQ_FOREACH(bso, &bglobal.bg_obslist, bso_entry) {
if (bso->bso_bs != bs)
@ -743,29 +662,47 @@ struct bfd_session *ptm_bfd_sess_new(struct bfd_peer_cfg *bpc)
* start. See `bfd_session_enable` for more information.
*/
if (bpc->bpc_has_localif)
strlcpy(bfd->ifname, bpc->bpc_localif, sizeof(bfd->ifname));
strlcpy(bfd->key.ifname, bpc->bpc_localif,
sizeof(bfd->key.ifname));
if (bpc->bpc_has_vrfname)
strlcpy(bfd->vrfname, bpc->bpc_vrfname, sizeof(bfd->vrfname));
/* Add observer if we have moving parts. */
if (bfd->ifname[0] || bfd->vrfname[0])
bs_observer_add(bfd);
strlcpy(bfd->key.vrfname, bpc->bpc_vrfname,
sizeof(bfd->key.vrfname));
/* Copy remaining data. */
if (bpc->bpc_ipv4 == false)
BFD_SET_FLAG(bfd->flags, BFD_SESS_FLAG_IPV6);
if (bpc->bpc_mhop) {
BFD_SET_FLAG(bfd->flags, BFD_SESS_FLAG_MH);
bfd->mhop.peer = bpc->bpc_peer;
bfd->mhop.local = bpc->bpc_local;
} else {
bfd->shop.peer = bpc->bpc_peer;
bfd->key.family = (bpc->bpc_ipv4) ? AF_INET : AF_INET6;
switch (bfd->key.family) {
case AF_INET:
memcpy(&bfd->key.peer, &bpc->bpc_peer.sa_sin.sin_addr,
sizeof(bpc->bpc_peer.sa_sin.sin_addr));
memcpy(&bfd->key.local, &bpc->bpc_local.sa_sin.sin_addr,
sizeof(bpc->bpc_local.sa_sin.sin_addr));
break;
case AF_INET6:
memcpy(&bfd->key.peer, &bpc->bpc_peer.sa_sin6.sin6_addr,
sizeof(bpc->bpc_peer.sa_sin6.sin6_addr));
memcpy(&bfd->key.local, &bpc->bpc_local.sa_sin6.sin6_addr,
sizeof(bpc->bpc_local.sa_sin6.sin6_addr));
break;
default:
assert(1);
break;
}
bfd->local_ip = bpc->bpc_local;
bfd->local_address = bpc->bpc_local;
if (bpc->bpc_mhop)
BFD_SET_FLAG(bfd->flags, BFD_SESS_FLAG_MH);
bfd->key.mhop = bpc->bpc_mhop;
/* Registrate session into data structures. */
bfd_key_insert(bfd);
bfd->discrs.my_discr = ptm_bfd_gen_ID();
bfd_id_insert(bfd);
/* Try to enable session and schedule for packet receive/send. */
if (bfd_session_enable(bfd) == -1) {
@ -774,6 +711,10 @@ struct bfd_session *ptm_bfd_sess_new(struct bfd_peer_cfg *bpc)
return NULL;
}
/* Add observer if we have moving parts. */
if (bfd->key.ifname[0] || bfd->key.vrfname[0] || bfd->sock == -1)
bs_observer_add(bfd);
/* Apply other configurations. */
_bfd_session_update(bfd, bpc);
@ -1219,35 +1160,26 @@ void integer2timestr(uint64_t time, char *buf, size_t buflen)
snprintf(buf, buflen, "%u second(s)", second);
}
const char *bs_to_string(struct bfd_session *bs)
const char *bs_to_string(const struct bfd_session *bs)
{
static char buf[256];
char addr_buf[INET6_ADDRSTRLEN];
int pos;
bool is_mhop = BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH);
pos = snprintf(buf, sizeof(buf), "mhop:%s", is_mhop ? "yes" : "no");
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH)) {
pos += snprintf(buf + pos, sizeof(buf) - pos,
" peer:%s local:%s", satostr(&bs->mhop.peer),
satostr(&bs->mhop.local));
if (bs->mhop.vrfid != VRF_DEFAULT)
snprintf(buf + pos, sizeof(buf) - pos, " vrf:%u",
bs->mhop.vrfid);
} else {
pos += snprintf(buf + pos, sizeof(buf) - pos, " peer:%s",
satostr(&bs->shop.peer));
if (bs->local_address.sa_sin.sin_family)
pos += snprintf(buf + pos, sizeof(buf) - pos,
" local:%s",
satostr(&bs->local_address));
if (bs->shop.ifindex)
snprintf(buf + pos, sizeof(buf) - pos, " ifindex:%u",
bs->shop.ifindex);
}
pos += snprintf(buf + pos, sizeof(buf) - pos, " peer:%s",
inet_ntop(bs->key.family, &bs->key.peer, addr_buf,
sizeof(addr_buf)));
pos += snprintf(buf + pos, sizeof(buf) - pos, " local:%s",
inet_ntop(bs->key.family, &bs->key.local, addr_buf,
sizeof(addr_buf)));
if (bs->key.vrfname[0])
pos += snprintf(buf + pos, sizeof(buf) - pos, " vrf:%s",
bs->key.vrfname);
if (bs->key.ifname[0])
pos += snprintf(buf + pos, sizeof(buf) - pos, " ifname:%s",
bs->key.ifname);
return buf;
}
@ -1259,12 +1191,20 @@ int bs_observer_add(struct bfd_session *bs)
bso->bso_bs = bs;
bso->bso_isinterface = !BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH);
if (bso->bso_isinterface)
strlcpy(bso->bso_entryname, bs->ifname,
strlcpy(bso->bso_entryname, bs->key.ifname,
sizeof(bso->bso_entryname));
else
strlcpy(bso->bso_entryname, bs->vrfname,
strlcpy(bso->bso_entryname, bs->key.vrfname,
sizeof(bso->bso_entryname));
/* Handle socket binding failures caused by missing local addresses. */
if (bs->sock == -1) {
bso->bso_isaddress = true;
bso->bso_addr.family = bs->key.family;
memcpy(&bso->bso_addr.u.prefix, &bs->key.local,
sizeof(bs->key.local));
}
TAILQ_INSERT_TAIL(&bglobal.bg_obslist, bso, bso_entry);
return 0;
@ -1276,21 +1216,59 @@ void bs_observer_del(struct bfd_session_observer *bso)
XFREE(MTYPE_BFDD_SESSION_OBSERVER, bso);
}
void bs_to_bpc(struct bfd_session *bs, struct bfd_peer_cfg *bpc)
{
memset(bpc, 0, sizeof(*bpc));
bpc->bpc_ipv4 = (bs->key.family == AF_INET);
bpc->bpc_mhop = bs->key.mhop;
switch (bs->key.family) {
case AF_INET:
bpc->bpc_peer.sa_sin.sin_family = AF_INET;
memcpy(&bpc->bpc_peer.sa_sin.sin_addr, &bs->key.peer,
sizeof(bpc->bpc_peer.sa_sin.sin_addr));
if (memcmp(&bs->key.local, &zero_addr, sizeof(bs->key.local))) {
bpc->bpc_local.sa_sin.sin_family = AF_INET6;
memcpy(&bpc->bpc_local.sa_sin.sin_addr, &bs->key.peer,
sizeof(bpc->bpc_local.sa_sin.sin_addr));
}
break;
case AF_INET6:
bpc->bpc_peer.sa_sin.sin_family = AF_INET6;
memcpy(&bpc->bpc_peer.sa_sin6.sin6_addr, &bs->key.peer,
sizeof(bpc->bpc_peer.sa_sin6.sin6_addr));
bpc->bpc_local.sa_sin6.sin6_family = AF_INET6;
memcpy(&bpc->bpc_local.sa_sin6.sin6_addr, &bs->key.peer,
sizeof(bpc->bpc_local.sa_sin6.sin6_addr));
break;
}
if (bs->key.ifname[0]) {
bpc->bpc_has_localif = true;
strlcpy(bpc->bpc_localif, bs->key.ifname,
sizeof(bpc->bpc_localif));
}
if (bs->key.vrfname[0]) {
bpc->bpc_has_vrfname = true;
strlcpy(bpc->bpc_vrfname, bs->key.vrfname,
sizeof(bpc->bpc_vrfname));
}
}
/*
* BFD hash data structures to find sessions.
*/
static struct hash *bfd_id_hash;
static struct hash *bfd_shop_hash;
static struct hash *bfd_mhop_hash;
static struct hash *bfd_key_hash;
static unsigned int bfd_id_hash_do(void *p);
static unsigned int bfd_shop_hash_do(void *p);
static unsigned int bfd_mhop_hash_do(void *p);
static void _shop_key(struct bfd_session *bs, const struct bfd_shop_key *shop);
static void _shop_key2(struct bfd_session *bs, const struct bfd_shop_key *shop);
static void _mhop_key(struct bfd_session *bs, const struct bfd_mhop_key *mhop);
static unsigned int bfd_key_hash_do(void *p);
static void _bfd_free(struct hash_bucket *hb,
void *arg __attribute__((__unused__)));
@ -1311,73 +1289,20 @@ static bool bfd_id_hash_cmp(const void *n1, const void *n2)
}
/* BFD hash for single hop. */
static unsigned int bfd_shop_hash_do(void *p)
static unsigned int bfd_key_hash_do(void *p)
{
struct bfd_session *bs = p;
return jhash(&bs->shop, sizeof(bs->shop), 0);
return jhash(&bs->key, sizeof(bs->key), 0);
}
static bool bfd_shop_hash_cmp(const void *n1, const void *n2)
static bool bfd_key_hash_cmp(const void *n1, const void *n2)
{
const struct bfd_session *bs1 = n1, *bs2 = n2;
return memcmp(&bs1->shop, &bs2->shop, sizeof(bs1->shop)) == 0;
return memcmp(&bs1->key, &bs2->key, sizeof(bs1->key)) == 0;
}
/* BFD hash for multi hop. */
static unsigned int bfd_mhop_hash_do(void *p)
{
struct bfd_session *bs = p;
return jhash(&bs->mhop, sizeof(bs->mhop), 0);
}
static bool bfd_mhop_hash_cmp(const void *n1, const void *n2)
{
const struct bfd_session *bs1 = n1, *bs2 = n2;
return memcmp(&bs1->mhop, &bs2->mhop, sizeof(bs1->mhop)) == 0;
}
/* Helper functions */
static void _shop_key(struct bfd_session *bs, const struct bfd_shop_key *shop)
{
bs->shop = *shop;
/* Remove unused fields. */
switch (bs->shop.peer.sa_sin.sin_family) {
case AF_INET:
bs->shop.peer.sa_sin.sin_port = 0;
break;
case AF_INET6:
bs->shop.peer.sa_sin6.sin6_port = 0;
break;
}
}
static void _shop_key2(struct bfd_session *bs, const struct bfd_shop_key *shop)
{
_shop_key(bs, shop);
bs->shop.ifindex = IFINDEX_INTERNAL;
}
static void _mhop_key(struct bfd_session *bs, const struct bfd_mhop_key *mhop)
{
bs->mhop = *mhop;
/* Remove unused fields. */
switch (bs->mhop.peer.sa_sin.sin_family) {
case AF_INET:
bs->mhop.peer.sa_sin.sin_port = 0;
bs->mhop.local.sa_sin.sin_port = 0;
break;
case AF_INET6:
bs->mhop.peer.sa_sin6.sin6_port = 0;
bs->mhop.local.sa_sin6.sin6_port = 0;
break;
}
}
/*
* Hash public interface / exported functions.
@ -1393,34 +1318,35 @@ struct bfd_session *bfd_id_lookup(uint32_t id)
return hash_lookup(bfd_id_hash, &bs);
}
struct bfd_session *bfd_shop_lookup(struct bfd_shop_key shop)
struct bfd_session *bfd_key_lookup(struct bfd_key key)
{
struct bfd_session bs, *bsp;
_shop_key(&bs, &shop);
bs.key = key;
bsp = hash_lookup(bfd_key_hash, &bs);
bsp = hash_lookup(bfd_shop_hash, &bs);
if (bsp == NULL && bs.shop.ifindex != 0) {
/*
* Since the local interface spec is optional, try
* searching the key without it as well.
*/
_shop_key2(&bs, &shop);
bsp = hash_lookup(bfd_shop_hash, &bs);
/* Handle cases where local-address is optional. */
if (bsp == NULL && bs.key.family == AF_INET) {
memset(&bs.key.local, 0, sizeof(bs.key.local));
bsp = hash_lookup(bfd_key_hash, &bs);
}
/* Handle cases where ifname is optional. */
bs.key = key;
if (bsp == NULL && bs.key.ifname[0]) {
memset(bs.key.ifname, 0, sizeof(bs.key.ifname));
bsp = hash_lookup(bfd_key_hash, &bs);
/* Handle cases where local-address and ifname are optional. */
if (bsp == NULL && bs.key.family == AF_INET) {
memset(&bs.key.local, 0, sizeof(bs.key.local));
bsp = hash_lookup(bfd_key_hash, &bs);
}
}
return bsp;
}
struct bfd_session *bfd_mhop_lookup(struct bfd_mhop_key mhop)
{
struct bfd_session bs;
_mhop_key(&bs, &mhop);
return hash_lookup(bfd_mhop_hash, &bs);
}
/*
* Delete functions.
*
@ -1440,31 +1366,18 @@ struct bfd_session *bfd_id_delete(uint32_t id)
return hash_release(bfd_id_hash, &bs);
}
struct bfd_session *bfd_shop_delete(struct bfd_shop_key shop)
struct bfd_session *bfd_key_delete(struct bfd_key key)
{
struct bfd_session bs, *bsp;
_shop_key(&bs, &shop);
bsp = hash_release(bfd_shop_hash, &bs);
if (bsp == NULL && shop.ifindex != 0) {
/*
* Since the local interface spec is optional, try
* searching the key without it as well.
*/
_shop_key2(&bs, &shop);
bsp = hash_release(bfd_shop_hash, &bs);
bs.key = key;
bsp = hash_lookup(bfd_key_hash, &bs);
if (bsp == NULL && key.ifname[0]) {
memset(bs.key.ifname, 0, sizeof(bs.key.ifname));
bsp = hash_lookup(bfd_key_hash, &bs);
}
return bsp;
}
struct bfd_session *bfd_mhop_delete(struct bfd_mhop_key mhop)
{
struct bfd_session bs;
_mhop_key(&bs, &mhop);
return hash_release(bfd_mhop_hash, &bs);
return hash_release(bfd_key_hash, bsp);
}
/* Iteration functions. */
@ -1473,14 +1386,9 @@ void bfd_id_iterate(hash_iter_func hif, void *arg)
hash_iterate(bfd_id_hash, hif, arg);
}
void bfd_shop_iterate(hash_iter_func hif, void *arg)
void bfd_key_iterate(hash_iter_func hif, void *arg)
{
hash_iterate(bfd_shop_hash, hif, arg);
}
void bfd_mhop_iterate(hash_iter_func hif, void *arg)
{
hash_iterate(bfd_mhop_hash, hif, arg);
hash_iterate(bfd_key_hash, hif, arg);
}
/*
@ -1494,24 +1402,17 @@ bool bfd_id_insert(struct bfd_session *bs)
return (hash_get(bfd_id_hash, bs, hash_alloc_intern) == bs);
}
bool bfd_shop_insert(struct bfd_session *bs)
bool bfd_key_insert(struct bfd_session *bs)
{
return (hash_get(bfd_shop_hash, bs, hash_alloc_intern) == bs);
}
bool bfd_mhop_insert(struct bfd_session *bs)
{
return (hash_get(bfd_mhop_hash, bs, hash_alloc_intern) == bs);
return (hash_get(bfd_key_hash, bs, hash_alloc_intern) == bs);
}
void bfd_initialize(void)
{
bfd_id_hash = hash_create(bfd_id_hash_do, bfd_id_hash_cmp,
"BFD discriminator hash");
bfd_shop_hash = hash_create(bfd_shop_hash_do, bfd_shop_hash_cmp,
"BFD single hop hash");
bfd_mhop_hash = hash_create(bfd_mhop_hash_do, bfd_mhop_hash_cmp,
"BFD multihop hop hash");
"BFD session discriminator hash");
bfd_key_hash = hash_create(bfd_key_hash_do, bfd_key_hash_cmp,
"BFD session hash");
}
static void _bfd_free(struct hash_bucket *hb,
@ -1532,11 +1433,9 @@ void bfd_shutdown(void)
* assert() here to make sure it really happened.
*/
bfd_id_iterate(_bfd_free, NULL);
assert(bfd_shop_hash->count == 0);
assert(bfd_mhop_hash->count == 0);
assert(bfd_key_hash->count == 0);
/* Now free the hashes themselves. */
hash_free(bfd_id_hash);
hash_free(bfd_shop_hash);
hash_free(bfd_mhop_hash);
hash_free(bfd_key_hash);
}

59
bfdd/bfd.h
View File

@ -173,15 +173,13 @@ enum bfd_session_flags {
#define BFD_CHECK_FLAG(field, flag) (field & flag)
/* BFD session hash keys */
struct bfd_shop_key {
struct sockaddr_any peer;
ifindex_t ifindex;
};
struct bfd_mhop_key {
struct sockaddr_any peer;
struct sockaddr_any local;
vrf_id_t vrfid;
struct bfd_key {
uint16_t family;
uint8_t mhop;
struct in6_addr peer;
struct in6_addr local;
char ifname[MAXNAMELEN];
char vrfname[MAXNAMELEN];
};
struct bfd_session_stats {
@ -227,19 +225,14 @@ struct bfd_session {
uint8_t polling;
/* This and the localDiscr are the keys to state info */
struct bfd_key key;
struct peer_label *pl;
union {
struct bfd_shop_key shop;
struct bfd_mhop_key mhop;
};
int sock;
struct sockaddr_any local_address;
struct sockaddr_any local_ip;
struct interface *ifp;
struct vrf *vrf;
char ifname[MAXNAMELEN];
char vrfname[MAXNAMELEN];
int sock;
/* BFD session flags */
enum bfd_session_flags flags;
@ -281,7 +274,11 @@ struct bfd_state_str_list {
struct bfd_session_observer {
struct bfd_session *bso_bs;
bool bso_isinterface;
char bso_entryname[MAXNAMELEN];
bool bso_isaddress;
union {
char bso_entryname[MAXNAMELEN];
struct prefix bso_addr;
};
TAILQ_ENTRY(bfd_session_observer) bso_entry;
};
@ -531,38 +528,28 @@ const char *satostr(struct sockaddr_any *sa);
const char *diag2str(uint8_t diag);
int strtosa(const char *addr, struct sockaddr_any *sa);
void integer2timestr(uint64_t time, char *buf, size_t buflen);
const char *bs_to_string(struct bfd_session *bs);
const char *bs_to_string(const struct bfd_session *bs);
int bs_observer_add(struct bfd_session *bs);
void bs_observer_del(struct bfd_session_observer *bso);
void bs_to_bpc(struct bfd_session *bs, struct bfd_peer_cfg *bpc);
/* BFD hash data structures interface */
void bfd_initialize(void);
void bfd_shutdown(void);
struct bfd_session *bfd_id_lookup(uint32_t id);
struct bfd_session *bfd_shop_lookup(struct bfd_shop_key shop);
struct bfd_session *bfd_mhop_lookup(struct bfd_mhop_key mhop);
struct bfd_vrf *bfd_vrf_lookup(int vrf_id);
struct bfd_iface *bfd_iface_lookup(const char *ifname);
struct bfd_session *bfd_key_lookup(struct bfd_key key);
struct bfd_session *bfd_id_delete(uint32_t id);
struct bfd_session *bfd_shop_delete(struct bfd_shop_key shop);
struct bfd_session *bfd_mhop_delete(struct bfd_mhop_key mhop);
struct bfd_vrf *bfd_vrf_delete(int vrf_id);
struct bfd_iface *bfd_iface_delete(const char *ifname);
struct bfd_session *bfd_key_delete(struct bfd_key key);
bool bfd_id_insert(struct bfd_session *bs);
bool bfd_shop_insert(struct bfd_session *bs);
bool bfd_mhop_insert(struct bfd_session *bs);
bool bfd_vrf_insert(struct bfd_vrf *vrf);
bool bfd_iface_insert(struct bfd_iface *iface);
bool bfd_key_insert(struct bfd_session *bs);
typedef void (*hash_iter_func)(struct hash_bucket *hb, void *arg);
void bfd_id_iterate(hash_iter_func hif, void *arg);
void bfd_shop_iterate(hash_iter_func hif, void *arg);
void bfd_mhop_iterate(hash_iter_func hif, void *arg);
void bfd_vrf_iterate(hash_iter_func hif, void *arg);
void bfd_iface_iterate(hash_iter_func hif, void *arg);
void bfd_key_iterate(hash_iter_func hif, void *arg);
/* Export callback functions for `event.c`. */
extern struct thread_master *master;
@ -572,6 +559,8 @@ int bfd_echo_recvtimer_cb(struct thread *t);
int bfd_xmt_cb(struct thread *t);
int bfd_echo_xmt_cb(struct thread *t);
extern struct in6_addr zero_addr;
/*
* bfdd_vty.c

60
bfdd/bfd_packet.c
View File

@ -79,7 +79,10 @@ int _ptm_bfd_send(struct bfd_session *bs, uint16_t *port, const void *data,
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_IPV6)) {
memset(&sin6, 0, sizeof(sin6));
sin6.sin6_family = AF_INET6;
sin6.sin6_addr = bs->shop.peer.sa_sin6.sin6_addr;
memcpy(&sin6.sin6_addr, &bs->key.peer, sizeof(sin6.sin6_addr));
if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr))
sin6.sin6_scope_id = bs->ifp->ifindex;
sin6.sin6_port =
(port) ? *port
: (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH))
@ -92,7 +95,7 @@ int _ptm_bfd_send(struct bfd_session *bs, uint16_t *port, const void *data,
} else {
memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_addr = bs->shop.peer.sa_sin.sin_addr;
memcpy(&sin.sin_addr, &bs->key.peer, sizeof(sin.sin_addr));
sin.sin_port =
(port) ? *port
: (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH))
@ -120,7 +123,7 @@ int _ptm_bfd_send(struct bfd_session *bs, uint16_t *port, const void *data,
void ptm_bfd_echo_snd(struct bfd_session *bfd)
{
struct sockaddr_any *sa;
struct sockaddr *sa;
socklen_t salen;
int sd;
struct bfd_echo_pkt bep;
@ -135,31 +138,34 @@ void ptm_bfd_echo_snd(struct bfd_session *bfd)
bep.len = BFD_ECHO_PKT_LEN;
bep.my_discr = htonl(bfd->discrs.my_discr);
sa = BFD_CHECK_FLAG(bfd->flags, BFD_SESS_FLAG_MH) ? &bfd->mhop.peer
: &bfd->shop.peer;
if (BFD_CHECK_FLAG(bfd->flags, BFD_SESS_FLAG_IPV6)) {
sd = bglobal.bg_echov6;
sin6 = sa->sa_sin6;
memset(&sin6, 0, sizeof(sin6));
memcpy(&sin6.sin6_addr, &bfd->key.peer, sizeof(sin6.sin6_addr));
if (bfd->ifp && IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr))
sin6.sin6_scope_id = bfd->ifp->ifindex;
sin6.sin6_port = htons(BFD_DEF_ECHO_PORT);
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
sin6.sin6_len = sizeof(sin6);
#endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */
sa = (struct sockaddr_any *)&sin6;
sa = (struct sockaddr *)&sin6;
salen = sizeof(sin6);
} else {
sd = bglobal.bg_echo;
sin = sa->sa_sin;
memset(&sin6, 0, sizeof(sin6));
memcpy(&sin.sin_addr, &bfd->key.peer, sizeof(sin.sin_addr));
sin.sin_port = htons(BFD_DEF_ECHO_PORT);
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
sin.sin_len = sizeof(sin);
#endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */
sa = (struct sockaddr_any *)&sin;
sa = (struct sockaddr *)&sin;
salen = sizeof(sin);
}
if (bp_udp_send(sd, BFD_TTL_VAL, (uint8_t *)&bep, sizeof(bep),
(struct sockaddr *)sa, salen)
if (bp_udp_send(sd, BFD_TTL_VAL, (uint8_t *)&bep, sizeof(bep), sa,
salen)
== -1)
return;
@ -602,8 +608,8 @@ int bfd_recv_cb(struct thread *t)
bfd->mh_ttl, BFD_TTL_VAL);
return 0;
}
} else if (bfd->local_ip.sa_sin.sin_family == AF_UNSPEC) {
bfd->local_ip = local;
} else if (bfd->local_address.sa_sin.sin_family == AF_UNSPEC) {
bfd->local_address = local;
}
/*
@ -917,25 +923,26 @@ int bp_peer_socket(const struct bfd_session *bs)
return -1;
}
if (bs->shop.ifindex != IFINDEX_INTERNAL) {
if (bp_bind_dev(sd, bs->ifp->name) != 0) {
if (bs->key.ifname[0]) {
if (bp_bind_dev(sd, bs->key.ifname) != 0) {
close(sd);
return -1;
}
} else if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH) &&
bs->mhop.vrfid != VRF_DEFAULT) {
if (bp_bind_dev(sd, bs->vrf->name) != 0) {
} else if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH)
&& bs->key.vrfname[0]) {
if (bp_bind_dev(sd, bs->key.vrfname) != 0) {
close(sd);
return -1;
}
}
/* Find an available source port in the proper range */
sin = bs->local_ip.sa_sin;
memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
sin.sin_len = sizeof(sin);
#endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */
memcpy(&sin.sin_addr, &bs->key.local, sizeof(sin.sin_addr));
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH) == 0)
sin.sin_addr.s_addr = INADDR_ANY;
@ -987,20 +994,23 @@ int bp_peer_socketv6(const struct bfd_session *bs)
}
/* Find an available source port in the proper range */
sin6 = bs->local_ip.sa_sin6;
memset(&sin6, 0, sizeof(sin6));
sin6.sin6_family = AF_INET6;
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
sin6.sin6_len = sizeof(sin6);
#endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */
memcpy(&sin6.sin6_addr, &bs->key.local, sizeof(sin6.sin6_addr));
if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr))
sin6.sin6_scope_id = bs->ifp->ifindex;
if (bs->shop.ifindex != IFINDEX_INTERNAL) {
if (bp_bind_dev(sd, bs->ifp->name) != 0) {
if (bs->key.ifname[0]) {
if (bp_bind_dev(sd, bs->key.ifname) != 0) {
close(sd);
return -1;
}
} else if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH) &&
bs->mhop.vrfid != VRF_DEFAULT) {
if (bp_bind_dev(sd, bs->vrf->name) != 0) {
} else if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH)
&& bs->key.vrfname[0]) {
if (bp_bind_dev(sd, bs->key.vrfname) != 0) {
close(sd);
return -1;
}

108
bfdd/bfdd_vty.c
View File

@ -79,7 +79,6 @@ _find_peer_or_error(struct vty *vty, int argc, struct cmd_token **argv,
const char *local_str, const char *ifname,
const char *vrfname);
/*
* Commands definition.
*/
@ -369,22 +368,25 @@ DEFPY(bfd_no_peer, bfd_no_peer_cmd,
*/
static void _display_peer_header(struct vty *vty, struct bfd_session *bs)
{
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH)) {
vty_out(vty, "\tpeer %s", satostr(&bs->mhop.peer));
char addr_buf[INET6_ADDRSTRLEN];
vty_out(vty, "\tpeer %s",
inet_ntop(bs->key.family, &bs->key.peer, addr_buf,
sizeof(addr_buf)));
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH))
vty_out(vty, " multihop");
vty_out(vty, " local-address %s", satostr(&bs->mhop.local));
if (bs->vrfname[0])
vty_out(vty, " vrf %s", bs->vrfname);
vty_out(vty, "\n");
} else {
vty_out(vty, "\tpeer %s", satostr(&bs->shop.peer));
if (bs->local_address.sa_sin.sin_family != AF_UNSPEC)
vty_out(vty, " local-address %s",
satostr(&bs->local_address));
if (bs->ifname[0])
vty_out(vty, " interface %s", bs->ifname);
vty_out(vty, "\n");
}
if (memcmp(&bs->key.local, &zero_addr, sizeof(bs->key.local)))
vty_out(vty, " local-address %s",
inet_ntop(bs->key.family, &bs->key.local, addr_buf,
sizeof(addr_buf)));
if (bs->key.vrfname[0])
vty_out(vty, " vrf %s", bs->key.vrfname);
if (bs->key.ifname[0])
vty_out(vty, " interface %s", bs->key.ifname);
vty_out(vty, "\n");
if (bs->pl)
vty_out(vty, "\t\tlabel: %s\n", bs->pl->pl_label);
@ -453,22 +455,25 @@ static void _display_peer(struct vty *vty, struct bfd_session *bs)
static struct json_object *_peer_json_header(struct bfd_session *bs)
{
struct json_object *jo = json_object_new_object();
char addr_buf[INET6_ADDRSTRLEN];
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH)) {
if (bs->key.mhop)
json_object_boolean_true_add(jo, "multihop");
json_object_string_add(jo, "peer", satostr(&bs->mhop.peer));
json_object_string_add(jo, "local", satostr(&bs->mhop.local));
if (bs->vrfname[0])
json_object_string_add(jo, "vrf", bs->vrfname);
} else {
else
json_object_boolean_false_add(jo, "multihop");
json_object_string_add(jo, "peer", satostr(&bs->shop.peer));
if (bs->local_address.sa_sin.sin_family != AF_UNSPEC)
json_object_string_add(jo, "local",
satostr(&bs->local_address));
if (bs->ifname[0])
json_object_string_add(jo, "interface", bs->ifname);
}
json_object_string_add(jo, "peer",
inet_ntop(bs->key.family, &bs->key.peer,
addr_buf, sizeof(addr_buf)));
if (memcmp(&bs->key.local, &zero_addr, sizeof(bs->key.local)))
json_object_string_add(jo, "local",
inet_ntop(bs->key.family, &bs->key.local,
addr_buf, sizeof(addr_buf)));
if (bs->key.vrfname[0])
json_object_string_add(jo, "vrf", bs->key.vrfname);
if (bs->key.ifname[0])
json_object_string_add(jo, "interface", bs->key.ifname);
if (bs->pl)
json_object_string_add(jo, "label", bs->pl->pl_label);
@ -916,25 +921,29 @@ static int bfdd_write_config(struct vty *vty)
static void _bfdd_peer_write_config(struct vty *vty, struct bfd_session *bs)
{
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH)) {
vty_out(vty, " peer %s", satostr(&bs->mhop.peer));
char addr_buf[INET6_ADDRSTRLEN];
vty_out(vty, " peer %s",
inet_ntop(bs->key.family, &bs->key.peer, addr_buf,
sizeof(addr_buf)));
if (bs->key.mhop)
vty_out(vty, " multihop");
vty_out(vty, " local-address %s", satostr(&bs->mhop.local));
if (bs->vrfname[0])
vty_out(vty, " vrf %s", bs->vrfname);
vty_out(vty, "\n");
} else {
vty_out(vty, " peer %s", satostr(&bs->shop.peer));
if (bs->local_address.sa_sin.sin_family != AF_UNSPEC)
vty_out(vty, " local-address %s",
satostr(&bs->local_address));
if (bs->ifname[0])
vty_out(vty, " interface %s", bs->ifname);
vty_out(vty, "\n");
}
if (memcmp(&bs->key.local, &zero_addr, sizeof(bs->key.local)))
vty_out(vty, " local-address %s",
inet_ntop(bs->key.family, &bs->key.local, addr_buf,
sizeof(addr_buf)));
if (bs->key.vrfname[0])
vty_out(vty, " vrf %s", bs->key.vrfname);
if (bs->key.ifname[0])
vty_out(vty, " interface %s", bs->key.ifname);
vty_out(vty, "\n");
if (bs->sock == -1)
vty_out(vty, " ! vrf or interface doesn't exist\n");
vty_out(vty,
" ! vrf, interface or local-address doesn't exist\n");
if (bs->detect_mult != BPC_DEF_DETECTMULTIPLIER)
vty_out(vty, " detect-multiplier %d\n", bs->detect_mult);
@ -980,16 +989,7 @@ static void _bfdd_peer_write_config_iter(struct hash_bucket *hb, void *arg)
static int bfdd_peer_write_config(struct vty *vty)
{
struct bfd_session_observer *bso;
bfd_id_iterate(_bfdd_peer_write_config_iter, vty);
TAILQ_FOREACH(bso, &bglobal.bg_obslist, bso_entry) {
/* Only print disabled sessions here. */
if (bso->bso_bs->sock != -1)
continue;
_bfdd_peer_write_config(vty, bso->bso_bs);
}
return 1;
}

46
bfdd/config.c
View File

@ -309,24 +309,7 @@ static int parse_peer_label_config(struct json_object *jo,
log_debug("\tpeer-label: %s", sval);
/* Translate the label into BFD address keys. */
bpc->bpc_ipv4 = !BFD_CHECK_FLAG(pl->pl_bs->flags, BFD_SESS_FLAG_IPV6);
bpc->bpc_mhop = BFD_CHECK_FLAG(pl->pl_bs->flags, BFD_SESS_FLAG_MH);
if (bpc->bpc_mhop) {
bpc->bpc_peer = pl->pl_bs->mhop.peer;
bpc->bpc_local = pl->pl_bs->mhop.local;
if (pl->pl_bs->mhop.vrfid != VRF_DEFAULT) {
bpc->bpc_has_vrfname = true;
strlcpy(bpc->bpc_vrfname, pl->pl_bs->vrf->name,
sizeof(bpc->bpc_vrfname));
}
} else {
bpc->bpc_peer = pl->pl_bs->shop.peer;
if (pl->pl_bs->ifname[0]) {
bpc->bpc_has_localif = true;
strlcpy(bpc->bpc_localif, pl->pl_bs->ifname,
sizeof(bpc->bpc_localif));
}
}
bs_to_bpc(pl->pl_bs, bpc);
return 0;
}
@ -519,6 +502,8 @@ int config_notify_request(struct bfd_control_socket *bcs, const char *jsonstr,
static int json_object_add_peer(struct json_object *jo, struct bfd_session *bs)
{
char addr_buf[INET6_ADDRSTRLEN];
/* Add peer 'key' information. */
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_IPV6))
json_object_boolean_true_add(jo, "ipv6");
@ -528,21 +513,26 @@ static int json_object_add_peer(struct json_object *jo, struct bfd_session *bs)
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH)) {
json_object_boolean_true_add(jo, "multihop");
json_object_string_add(jo, "peer-address",
satostr(&bs->mhop.peer));
inet_ntop(bs->key.family, &bs->key.peer,
addr_buf, sizeof(addr_buf)));
json_object_string_add(jo, "local-address",
satostr(&bs->mhop.local));
if (bs->vrfname[0])
json_object_string_add(jo, "vrf-name", bs->vrfname);
inet_ntop(bs->key.family, &bs->key.local,
addr_buf, sizeof(addr_buf)));
if (bs->key.vrfname[0])
json_object_string_add(jo, "vrf-name", bs->key.vrfname);
} else {
json_object_boolean_false_add(jo, "multihop");
json_object_string_add(jo, "peer-address",
satostr(&bs->shop.peer));
if (bs->local_address.sa_sin.sin_family != AF_UNSPEC)
json_object_string_add(jo, "local-address",
satostr(&bs->local_address));
if (bs->ifname[0])
inet_ntop(bs->key.family, &bs->key.peer,
addr_buf, sizeof(addr_buf)));
if (memcmp(&bs->key.local, &zero_addr, sizeof(bs->key.local)))
json_object_string_add(
jo, "local-address",
inet_ntop(bs->key.family, &bs->key.local,
addr_buf, sizeof(addr_buf)));
if (bs->key.ifname[0])
json_object_string_add(jo, "local-interface",
bs->ifname);
bs->key.ifname);
}
if (bs->pl)

129
bfdd/ptm_adapter.c
View File

@ -55,7 +55,7 @@ static struct zclient *zclient;
/*
* Prototypes
*/
static int _ptm_msg_address(struct stream *msg, struct sockaddr_any *sa);
static int _ptm_msg_address(struct stream *msg, int family, const void *addr);
static void _ptm_msg_read_address(struct stream *msg, struct sockaddr_any *sa);
static int _ptm_msg_read(struct stream *msg, int command,
@ -127,24 +127,24 @@ static void debug_printbpc(const char *func, unsigned int line,
#define DEBUG_PRINTBPC(bpc)
#endif /* BFD_DEBUG */
static int _ptm_msg_address(struct stream *msg, struct sockaddr_any *sa)
static int _ptm_msg_address(struct stream *msg, int family, const void *addr)
{
switch (sa->sa_sin.sin_family) {
stream_putc(msg, family);
switch (family) {
case AF_INET:
stream_putc(msg, sa->sa_sin.sin_family);
stream_put_in_addr(msg, &sa->sa_sin.sin_addr);
stream_put(msg, addr, sizeof(struct in_addr));
stream_putc(msg, 32);
break;
case AF_INET6:
stream_putc(msg, sa->sa_sin6.sin6_family);
stream_put(msg, &sa->sa_sin6.sin6_addr,
sizeof(sa->sa_sin6.sin6_addr));
stream_put(msg, addr, sizeof(struct in6_addr));
stream_putc(msg, 128);
break;
default:
return -1;
assert(0);
break;
}
return 0;
@ -153,7 +153,6 @@ static int _ptm_msg_address(struct stream *msg, struct sockaddr_any *sa)
int ptm_bfd_notify(struct bfd_session *bs)
{
struct stream *msg;
struct sockaddr_any sac;
bs->stats.znotification++;
@ -195,10 +194,7 @@ int ptm_bfd_notify(struct bfd_session *bs)
stream_putl(msg, IFINDEX_INTERNAL);
/* BFD destination prefix information. */
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH))
_ptm_msg_address(msg, &bs->mhop.peer);
else
_ptm_msg_address(msg, &bs->shop.peer);
_ptm_msg_address(msg, bs->key.family, &bs->key.peer);
/* BFD status */
switch (bs->ses_state) {
@ -218,34 +214,7 @@ int ptm_bfd_notify(struct bfd_session *bs)
}
/* BFD source prefix information. */
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH)) {
_ptm_msg_address(msg, &bs->mhop.local);
} else {
if (bs->local_address.sa_sin.sin_family)
_ptm_msg_address(msg, &bs->local_address);
else if (bs->local_address.sa_sin.sin_family)
_ptm_msg_address(msg, &bs->local_ip);
else {
sac = bs->shop.peer;
switch (sac.sa_sin.sin_family) {
case AF_INET:
memset(&sac.sa_sin.sin_addr, 0,
sizeof(sac.sa_sin.sin_family));
break;
case AF_INET6:
memset(&sac.sa_sin6.sin6_addr, 0,
sizeof(sac.sa_sin6.sin6_family));
break;
default:
assert(false);
break;
}
/* No local address found yet, so send zeroes. */
_ptm_msg_address(msg, &sac);
}
}
_ptm_msg_address(msg, bs->key.family, &bs->key.local);
/* Write packet size. */
stream_putw_at(msg, 0, stream_get_endp(msg));
@ -290,7 +259,6 @@ stream_failure:
static int _ptm_msg_read(struct stream *msg, int command,
struct bfd_peer_cfg *bpc, struct ptm_client **pc)
{
struct interface *ifp;
uint32_t pid;
uint8_t ttl __attribute__((unused));
size_t ifnamelen;
@ -385,31 +353,6 @@ static int _ptm_msg_read(struct stream *msg, int command,
if (bpc->bpc_has_localif) {
STREAM_GET(bpc->bpc_localif, msg, ifnamelen);
bpc->bpc_localif[ifnamelen] = 0;
/*
* IPv6 link-local addresses must use scope id,
* otherwise the session lookup will always fail
* and we'll have multiple sessions showing up.
*
* This problem only happens with single hop
* since it is not possible to have link-local
* address for multi hop sessions.
*/
if (bpc->bpc_ipv4 == false
&& IN6_IS_ADDR_LINKLOCAL(
&bpc->bpc_peer.sa_sin6.sin6_addr)) {
ifp = if_lookup_by_name_all_vrf(
bpc->bpc_localif);
if (ifp == NULL) {
log_error(
"ptm-read: interface %s doesn't exists",
bpc->bpc_localif);
return -1;
}
bpc->bpc_peer.sa_sin6.sin6_scope_id =
ifp->ifindex;
}
}
}
@ -608,7 +551,7 @@ static void bfdd_sessions_enable_interface(struct interface *ifp)
/* Interface name mismatch. */
bs = bso->bso_bs;
if (strcmp(ifp->name, bs->ifname))
if (strcmp(ifp->name, bs->key.ifname))
continue;
/* Skip enabled sessions. */
if (bs->sock != -1)
@ -630,7 +573,7 @@ static void bfdd_sessions_disable_interface(struct interface *ifp)
/* Interface name mismatch. */
bs = bso->bso_bs;
if (strcmp(ifp->name, bs->ifname))
if (strcmp(ifp->name, bs->key.ifname))
continue;
/* Skip disabled sessions. */
if (bs->sock == -1)
@ -691,6 +634,48 @@ static int bfdd_interface_vrf_update(int command __attribute__((__unused__)),
return 0;
}
static void bfdd_sessions_enable_address(struct connected *ifc)
{
struct bfd_session_observer *bso;
struct bfd_session *bs;
struct prefix prefix;
TAILQ_FOREACH(bso, &bglobal.bg_obslist, bso_entry) {
if (bso->bso_isaddress == false)
continue;
/* Skip enabled sessions. */
bs = bso->bso_bs;
if (bs->sock != -1)
continue;
/* Check address. */
prefix = bso->bso_addr;
prefix.prefixlen = ifc->address->prefixlen;
if (prefix_cmp(&prefix, ifc->address))
continue;
/* Try to enable it. */
bfd_session_enable(bs);
}
}
static int bfdd_interface_address_update(int cmd, struct zclient *zc,
zebra_size_t len
__attribute__((__unused__)),
vrf_id_t vrfid)
{
struct connected *ifc;
ifc = zebra_interface_address_read(cmd, zc->ibuf, vrfid);
if (ifc == NULL)
return 0;
bfdd_sessions_enable_address(ifc);
return 0;
}
void bfdd_zclient_init(struct zebra_privs_t *bfdd_priv)
{
zclient = zclient_new(master, &zclient_options_default);
@ -713,6 +698,10 @@ void bfdd_zclient_init(struct zebra_privs_t *bfdd_priv)
/* Learn about interface VRF. */
zclient->interface_vrf_update = bfdd_interface_vrf_update;
/* Learn about new addresses being registered. */
zclient->interface_address_add = bfdd_interface_address_update;
zclient->interface_address_delete = bfdd_interface_address_update;
}
void bfdd_zclient_stop(void)

0
tests/topotests/bfd-topo2/__init__.py Normal file
View File

5
tests/topotests/bfd-topo2/r1/bfdd.conf Normal file
View File

@ -0,0 +1,5 @@
bfd
peer 2001:db8:4::1 multihop local-address 2001:db8:1::1
no shutdown
!
!

13
tests/topotests/bfd-topo2/r1/bgpd.conf Normal file
View File

@ -0,0 +1,13 @@
router bgp 101
bgp router-id 10.254.254.1
neighbor r2g peer-group
neighbor r2g remote-as external
neighbor r2g bfd
neighbor r1-eth0 interface peer-group r2g
address-family ipv4 unicast
redistribute connected
exit-address-family
address-family ipv6 unicast
neighbor r2g activate
exit-address-family
!

68
tests/topotests/bfd-topo2/r1/ipv4_routes.json Normal file
View File

@ -0,0 +1,68 @@
{
"10.0.3.0/24": [
{
"distance": 20,
"protocol": "bgp",
"internalFlags": 8,
"metric": 0,
"selected": true,
"installed": true,
"prefix": "10.0.3.0/24",
"internalStatus": 34,
"nexthops": [
{
"interfaceName": "r1-eth0",
"interfaceIndex": 2,
"fib": true,
"flags": 3,
"active": true,
"afi": "ipv6"
}
]
}
],
"10.254.254.2/32": [
{
"distance": 20,
"protocol": "bgp",
"internalFlags": 8,
"metric": 0,
"selected": true,
"installed": true,
"prefix": "10.254.254.2/32",
"internalStatus": 34,
"nexthops": [
{
"interfaceName": "r1-eth0",
"interfaceIndex": 2,
"fib": true,
"flags": 3,
"active": true,
"afi": "ipv6"
}
]
}
],
"10.254.254.1/32": [
{
"distance": 0,
"protocol": "connected",
"internalFlags": 8,
"metric": 0,
"selected": true,
"installed": true,
"prefix": "10.254.254.1/32",
"internalStatus": 32,
"nexthops": [
{
"directlyConnected": true,
"interfaceName": "lo",
"interfaceIndex": 1,
"fib": true,
"flags": 3,
"active": true
}
]
}
]
}

63
tests/topotests/bfd-topo2/r1/ipv6_routes.json Normal file
View File

@ -0,0 +1,63 @@
{
"2001:db8:4::/64": [
{
"distance": 20,
"protocol": "bgp",
"internalFlags": 8,
"metric": 0,
"selected": true,
"installed": true,
"prefix": "2001:db8:4::/64",
"internalStatus": 34,
"nexthops": [
{
"interfaceName": "r1-eth0",
"interfaceIndex": 2,
"fib": true,
"flags": 3,
"active": true,
"afi": "ipv6"
}
]
}
],
"2001:db8:1::/64": [
{
"distance": 20,
"protocol": "bgp",
"internalFlags": 0,
"metric": 0,
"internalStatus": 2,
"prefix": "2001:db8:1::/64",
"nexthops": [
{
"interfaceName": "r1-eth0",
"interfaceIndex": 2,
"flags": 1,
"active": true,
"afi": "ipv6"
}
]
},
{
"distance": 0,
"protocol": "connected",
"internalFlags": 8,
"metric": 0,
"selected": true,
"installed": true,
"prefix": "2001:db8:1::/64",
"internalStatus": 32,
"nexthops": [
{
"directlyConnected": true,
"interfaceName": "r1-eth0",
"interfaceIndex": 2,
"fib": true,
"flags": 3,
"active": true
}
]
}
]
}

29
tests/topotests/bfd-topo2/r1/peers.json Normal file
View File

@ -0,0 +1,29 @@
[
{
"multihop":true,
"peer":"2001:db8:4::1",
"local":"2001:db8:1::1",
"status":"up",
"diagnostic":"ok",
"remote-diagnostic":"ok",
"receive-interval":300,
"transmit-interval":300,
"echo-interval":0,
"remote-receive-interval":300,
"remote-transmit-interval":300,
"remote-echo-interval":50
},
{
"multihop":false,
"interface":"r1-eth0",
"status":"up",
"diagnostic":"ok",
"remote-diagnostic":"ok",
"receive-interval":300,
"transmit-interval":300,
"echo-interval":0,
"remote-receive-interval":300,
"remote-transmit-interval":300,
"remote-echo-interval":50
}
]

6
tests/topotests/bfd-topo2/r1/zebra.conf Normal file
View File

@ -0,0 +1,6 @@
interface lo
ip address 10.254.254.1/32
!
interface r1-eth0
ipv6 address 2001:db8:1::1/64
!

16
tests/topotests/bfd-topo2/r2/bgpd.conf Normal file
View File

@ -0,0 +1,16 @@
router bgp 102
bgp router-id 10.254.254.2
neighbor r2g peer-group
neighbor r2g remote-as external
neighbor r2g bfd
neighbor r2-eth0 interface peer-group r2g
!
address-family ipv4 unicast
redistribute connected
exit-address-family
!
address-family ipv6 unicast
redistribute connected
neighbor r2g activate
exit-address-family
!

108
tests/topotests/bfd-topo2/r2/ipv4_routes.json Normal file
View File

@ -0,0 +1,108 @@
{
"10.0.3.0/24": [
{
"distance": 110,
"protocol": "ospf",
"internalFlags": 0,
"metric": 10,
"internalStatus": 2,
"prefix": "10.0.3.0/24",
"nexthops": [
{
"active": true,
"directlyConnected": true,
"flags": 1,
"interfaceIndex": 3,
"interfaceName": "r2-eth1"
}
]
},
{
"distance": 0,
"protocol": "connected",
"internalFlags": 8,
"metric": 0,
"selected": true,
"installed": true,
"prefix": "10.0.3.0/24",
"internalStatus": 32,
"nexthops": [
{
"directlyConnected": true,
"interfaceName": "r2-eth1",
"interfaceIndex": 3,
"fib": true,
"flags": 3,
"active": true
}
]
}
],
"10.254.254.3/32": [
{
"distance": 110,
"protocol": "ospf",
"internalFlags": 8,
"metric": 20,
"selected": true,
"installed": true,
"prefix": "10.254.254.3/32",
"internalStatus": 34,
"nexthops": [
{
"interfaceName": "r2-eth1",
"ip": "10.0.3.1",
"interfaceIndex": 3,
"fib": true,
"flags": 3,
"active": true,
"afi": "ipv4"
}
]
}
],
"10.254.254.2/32": [
{
"distance": 0,
"protocol": "connected",
"internalFlags": 8,
"metric": 0,
"selected": true,
"installed": true,
"prefix": "10.254.254.2/32",
"internalStatus": 32,
"nexthops": [
{
"directlyConnected": true,
"interfaceName": "lo",
"interfaceIndex": 1,
"fib": true,
"flags": 3,
"active": true
}
]
}
],
"10.254.254.1/32": [
{
"distance": 20,
"protocol": "bgp",
"internalFlags": 8,
"metric": 0,
"selected": true,
"installed": true,
"prefix": "10.254.254.1/32",
"internalStatus": 34,
"nexthops": [
{
"interfaceName": "r2-eth0",
"interfaceIndex": 2,
"fib": true,
"flags": 3,
"active": true,
"afi": "ipv6"
}
]
}
]
}

63
tests/topotests/bfd-topo2/r2/ipv6_routes.json Normal file
View File

@ -0,0 +1,63 @@
{
"2001:db8:4::/64": [
{
"distance": 110,
"protocol": "ospf6",
"internalFlags": 0,
"metric": 10,
"internalStatus": 2,
"prefix": "2001:db8:4::/64",
"nexthops": [
{
"active": true,
"directlyConnected": true,
"flags": 1,
"interfaceIndex": 4,
"interfaceName": "r2-eth2"
}
]
},
{
"distance": 0,
"protocol": "connected",
"internalFlags": 8,
"metric": 0,
"selected": true,
"installed": true,
"prefix": "2001:db8:4::/64",
"internalStatus": 32,
"nexthops": [
{
"directlyConnected": true,
"interfaceName": "r2-eth2",
"interfaceIndex": 4,
"fib": true,
"flags": 3,
"active": true
}
]
}
],
"2001:db8:1::/64": [
{
"distance": 0,
"protocol": "connected",
"internalFlags": 8,
"metric": 0,
"selected": true,
"installed": true,
"prefix": "2001:db8:1::/64",
"internalStatus": 32,
"nexthops": [
{
"directlyConnected": true,
"interfaceName": "r2-eth0",
"interfaceIndex": 2,
"fib": true,
"flags": 3,
"active": true
}
]
}
]
}

9
tests/topotests/bfd-topo2/r2/ospf6d.conf Normal file
View File

@ -0,0 +1,9 @@
interface r2-eth2
ipv6 ospf6 bfd
!
router ospf6
ospf6 router-id 10.254.254.2
redistribute connected
redistribute bgp
interface r2-eth2 area 0.0.0.1
!

9
tests/topotests/bfd-topo2/r2/ospfd.conf Normal file
View File

@ -0,0 +1,9 @@
interface r2-eth1
ip ospf area 0.0.0.1
ip ospf bfd
!
router ospf
ospf router-id 10.254.254.2
redistribute connected
redistribute bgp
!

42
tests/topotests/bfd-topo2/r2/peers.json Normal file
View File

@ -0,0 +1,42 @@
[
{
"status": "up",
"transmit-interval": 300,
"remote-receive-interval": 300,
"echo-interval": 0,
"diagnostic": "ok",
"multihop": false,
"interface": "r2-eth0",
"remote-transmit-interval": 300,
"receive-interval": 300,
"remote-echo-interval": 50,
"remote-diagnostic": "ok"
},
{
"status": "up",
"transmit-interval": 300,
"remote-receive-interval": 300,
"echo-interval": 0,
"diagnostic": "ok",
"multihop": false,
"interface": "r2-eth2",
"remote-transmit-interval": 300,
"receive-interval": 300,
"remote-echo-interval": 50,
"remote-diagnostic": "ok"
},
{
"status": "up",
"transmit-interval": 300,
"remote-receive-interval": 300,
"echo-interval": 0,
"diagnostic": "ok",
"multihop": false,
"interface": "r2-eth1",
"remote-transmit-interval": 300,
"receive-interval": 300,
"remote-echo-interval": 50,
"remote-diagnostic": "ok",
"peer": "10.0.3.1"
}
]

15
tests/topotests/bfd-topo2/r2/zebra.conf Normal file
View File

@ -0,0 +1,15 @@
ip forwarding
ipv6 forwarding
!
interface lo
ip address 10.254.254.2/32
!
interface r2-eth0
ipv6 address 2001:db8:1::2/64
!
interface r2-eth1
ip address 10.0.3.2/24
!
interface r2-eth2
ipv6 address 2001:db8:4::2/64
!

109
tests/topotests/bfd-topo2/r3/ipv4_routes.json Normal file
View File

@ -0,0 +1,109 @@
{
"10.0.3.0/24": [
{
"distance": 110,
"protocol": "ospf",
"internalFlags": 0,
"metric": 10,
"internalStatus": 0,
"prefix": "10.0.3.0/24",
"nexthops": [
{
"active": true,
"directlyConnected": true,
"flags": 1,
"interfaceIndex": 2,
"interfaceName": "r3-eth0"
}
]
},
{
"distance": 0,
"protocol": "connected",
"internalFlags": 8,
"metric": 0,
"selected": true,
"installed": true,
"prefix": "10.0.3.0/24",
"internalStatus": 32,
"nexthops": [
{
"directlyConnected": true,
"interfaceName": "r3-eth0",
"interfaceIndex": 2,
"fib": true,
"flags": 3,
"active": true
}
]
}
],
"10.254.254.3/32": [
{
"distance": 0,
"protocol": "connected",
"internalFlags": 8,
"metric": 0,
"selected": true,
"installed": true,
"prefix": "10.254.254.3/32",
"internalStatus": 32,
"nexthops": [
{
"directlyConnected": true,
"interfaceName": "lo",
"interfaceIndex": 1,
"fib": true,
"flags": 3,
"active": true
}
]
}
],
"10.254.254.2/32": [
{
"distance": 110,
"protocol": "ospf",
"internalFlags": 8,
"metric": 20,
"selected": true,
"installed": true,
"prefix": "10.254.254.2/32",
"internalStatus": 34,
"nexthops": [
{
"interfaceName": "r3-eth0",
"ip": "10.0.3.2",
"interfaceIndex": 2,
"fib": true,
"flags": 3,
"active": true,
"afi": "ipv4"
}
]
}
],
"10.254.254.1/32": [
{
"distance": 110,
"protocol": "ospf",
"internalFlags": 8,
"metric": 20,
"selected": true,
"installed": true,
"prefix": "10.254.254.1/32",
"internalStatus": 34,
"nexthops": [
{
"interfaceName": "r3-eth0",
"ip": "10.0.3.2",
"interfaceIndex": 2,
"fib": true,
"flags": 3,
"active": true,
"afi": "ipv4"
}
]
}
]
}

2
tests/topotests/bfd-topo2/r3/ipv6_routes.json Normal file
View File

@ -0,0 +1,2 @@
{
}

8
tests/topotests/bfd-topo2/r3/ospfd.conf Normal file
View File

@ -0,0 +1,8 @@
interface r3-eth0
ip ospf area 0.0.0.1
ip ospf bfd
!
router ospf
ospf router-id 10.254.254.3
redistribute connected
!

16
tests/topotests/bfd-topo2/r3/peers.json Normal file
View File

@ -0,0 +1,16 @@
[
{
"status": "up",
"transmit-interval": 300,
"remote-receive-interval": 300,
"echo-interval": 0,
"diagnostic": "ok",
"multihop": false,
"interface": "r3-eth0",
"remote-transmit-interval": 300,
"receive-interval": 300,
"remote-echo-interval": 50,
"remote-diagnostic": "ok",
"peer": "10.0.3.2"
}
]

6
tests/topotests/bfd-topo2/r3/zebra.conf Normal file
View File

@ -0,0 +1,6 @@
interface lo
ip address 10.254.254.3/32
!
interface r3-eth0
ip address 10.0.3.1/24
!

5
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bfd
peer 2001:db8:1::1 multihop local-address 2001:db8:4::1
no shutdown
!
!

24
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{
"10.254.254.4/32": [
{
"distance": 0,
"protocol": "connected",
"internalFlags": 8,
"metric": 0,
"selected": true,
"installed": true,
"prefix": "10.254.254.4/32",
"internalStatus": 32,
"nexthops": [
{
"directlyConnected": true,
"interfaceName": "lo",
"interfaceIndex": 1,
"fib": true,
"flags": 3,
"active": true
}
]
}
]
}

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{
"2001:db8:4::/64": [
{
"distance": 110,
"protocol": "ospf6",
"internalFlags": 0,
"metric": 10,
"internalStatus": 2,
"prefix": "2001:db8:4::/64",
"nexthops": [
{
"active": true,
"directlyConnected": true,
"flags": 1,
"interfaceIndex": 2,
"interfaceName": "r4-eth0"
}
]
},
{
"distance": 0,
"protocol": "connected",
"internalFlags": 8,
"metric": 0,
"selected": true,
"installed": true,
"prefix": "2001:db8:4::/64",
"internalStatus": 32,
"nexthops": [
{
"directlyConnected": true,
"interfaceName": "r4-eth0",
"interfaceIndex": 2,
"fib": true,
"flags": 3,
"active": true
}
]
}
],
"2001:db8:1::/64": [
{
"distance": 110,
"protocol": "ospf6",
"internalFlags": 8,
"metric": 10,
"selected": true,
"installed": true,
"prefix": "2001:db8:1::/64",
"internalStatus": 34,
"nexthops": [
{
"interfaceName": "r4-eth0",
"interfaceIndex": 2,
"fib": true,
"flags": 3,
"active": true,
"afi": "ipv6"
}
]
}
]
}

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interface r4-eth0
ipv6 ospf6 bfd
!
router ospf6
ospf6 router-id 10.254.254.4
redistribute connected
interface r4-eth0 area 0.0.0.1
!

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[
{
"multihop":true,
"peer":"2001:db8:1::1",
"local":"2001:db8:4::1",
"status":"up",
"diagnostic":"ok",
"remote-diagnostic":"ok",
"receive-interval":300,
"transmit-interval":300,
"echo-interval":0,
"remote-receive-interval":300,
"remote-transmit-interval":300,
"remote-echo-interval":50
},
{
"multihop":false,
"interface":"r4-eth0",
"status":"up",
"diagnostic":"ok",
"remote-diagnostic":"ok",
"receive-interval":300,
"transmit-interval":300,
"echo-interval":0,
"remote-receive-interval":300,
"remote-transmit-interval":300,
"remote-echo-interval":50
}
]

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interface lo
ip address 10.254.254.4/32
!
interface r4-eth0
ipv6 address 2001:db8:4::1/64
!

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## Color coding:
#########################
## Main FRR: #f08080 red
## Switches: #d0e0d0 gray
## RIP: #19e3d9 Cyan
## RIPng: #fcb314 dark yellow
## OSPFv2: #32b835 Green
## OSPFv3: #19e3d9 Cyan
## ISIS IPv4 #fcb314 dark yellow
## ISIS IPv6 #9a81ec purple
## BGP IPv4 #eee3d3 beige
## BGP IPv6 #fdff00 yellow
##### Colors (see http://www.color-hex.com/)
graph template {
label="bfd-topo2";
# Routers
r1 [
shape=doubleoctagon,
label="r1",
fillcolor="#f08080",
style=filled,
];
r2 [
shape=doubleoctagon
label="r2",
fillcolor="#f08080",
style=filled,
];
r3 [
shape=doubleoctagon
label="r3",
fillcolor="#f08080",
style=filled,
];
r4 [
shape=doubleoctagon
label="r4",
fillcolor="#f08080",
style=filled,
];
# Switches
sw1 [
shape=oval,
label="sw1\n2001:db8:1::/64",
fillcolor="#d0e0d0",
style=filled,
];
sw2 [
shape=oval,
label="sw2\n10.0.3.0/24",
fillcolor="#d0e0d0",
style=filled,
];
sw3 [
shape=oval,
label="sw3\n2001:db8:4::/64",
fillcolor="#d0e0d0",
style=filled,
];
# Connections
r1 -- sw1 [label="eth0"];
r2 -- sw1 [label="eth0"];
r2 -- sw2 [label="eth1"];
r3 -- sw2 [label="eth0"];
r2 -- sw3 [label="eth2"];
r4 -- sw3 [label="eth0"];
}

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#!/usr/bin/env python
#
# test_bfd_topo2.py
# Part of NetDEF Topology Tests
#
# Copyright (c) 2019 by
# Network Device Education Foundation, Inc. ("NetDEF")
#
# Permission to use, copy, modify, and/or distribute this software
# for any purpose with or without fee is hereby granted, provided
# that the above copyright notice and this permission notice appear
# in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
#
"""
test_bfd_topo2.py: Test the FRR/Quagga BFD daemon with multihop and BGP
unnumbered.
"""
import os
import sys
import json
from functools import partial
import pytest
# Save the Current Working Directory to find configuration files.
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, '../'))
# pylint: disable=C0413
# Import topogen and topotest helpers
from lib import topotest
from lib.topogen import Topogen, TopoRouter, get_topogen
from lib.topolog import logger
# Required to instantiate the topology builder class.
from mininet.topo import Topo
class BFDTopo(Topo):
"Test topology builder"
def build(self, *_args, **_opts):
"Build function"
tgen = get_topogen(self)
# Create 4 routers.
for routern in range(1, 5):
tgen.add_router('r{}'.format(routern))
switch = tgen.add_switch('s1')
switch.add_link(tgen.gears['r1'])
switch.add_link(tgen.gears['r2'])
switch = tgen.add_switch('s2')
switch.add_link(tgen.gears['r2'])
switch.add_link(tgen.gears['r3'])
switch = tgen.add_switch('s3')
switch.add_link(tgen.gears['r2'])
switch.add_link(tgen.gears['r4'])
def setup_module(mod):
"Sets up the pytest environment"
tgen = Topogen(BFDTopo, mod.__name__)
tgen.start_topology()
router_list = tgen.routers()
for rname, router in router_list.iteritems():
router.load_config(
TopoRouter.RD_ZEBRA,
os.path.join(CWD, '{}/zebra.conf'.format(rname))
)
router.load_config(
TopoRouter.RD_BFD,
os.path.join(CWD, '{}/bfdd.conf'.format(rname))
)
router.load_config(
TopoRouter.RD_BGP,
os.path.join(CWD, '{}/bgpd.conf'.format(rname))
)
router.load_config(
TopoRouter.RD_OSPF,
os.path.join(CWD, '{}/ospfd.conf'.format(rname))
)
router.load_config(
TopoRouter.RD_OSPF6,
os.path.join(CWD, '{}/ospf6d.conf'.format(rname))
)
# Initialize all routers.
tgen.start_router()
# Verify that we are using the proper version and that the BFD
# daemon exists.
for router in router_list.values():
# Check for Version
if router.has_version('<', '5.1'):
tgen.set_error('Unsupported FRR version')
break
def teardown_module(_mod):
"Teardown the pytest environment"
tgen = get_topogen()
tgen.stop_topology()
def test_protocols_convergence():
"""
Assert that all protocols have converged before checking for the BFD
statuses as they depend on it.
"""
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
# Check IPv4 routing tables.
logger.info("Checking IPv4 routes for convergence")
for router in tgen.routers().values():
json_file = '{}/{}/ipv4_routes.json'.format(CWD, router.name)
if not os.path.isfile(json_file):
logger.info('skipping file {}'.format(json_file))
continue
expected = json.loads(open(json_file).read())
test_func = partial(topotest.router_json_cmp,
router, 'show ip route json', expected)
_, result = topotest.run_and_expect(test_func, None, count=160,
wait=0.5)
assertmsg = '"{}" JSON output mismatches'.format(router.name)
assert result is None, assertmsg
# Check IPv6 routing tables.
logger.info("Checking IPv6 routes for convergence")
for router in tgen.routers().values():
json_file = '{}/{}/ipv6_routes.json'.format(CWD, router.name)
if not os.path.isfile(json_file):
logger.info('skipping file {}'.format(json_file))
continue
expected = json.loads(open(json_file).read())
test_func = partial(topotest.router_json_cmp,
router, 'show ipv6 route json', expected)
_, result = topotest.run_and_expect(test_func, None, count=160,
wait=0.5)
assertmsg = '"{}" JSON output mismatches'.format(router.name)
assert result is None, assertmsg
def test_bfd_connection():
"Assert that the BFD peers can find themselves."
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
logger.info('waiting for bfd peers to go up')
for router in tgen.routers().values():
json_file = '{}/{}/peers.json'.format(CWD, router.name)
expected = json.loads(open(json_file).read())
test_func = partial(topotest.router_json_cmp,
router, 'show bfd peers json', expected)
_, result = topotest.run_and_expect(test_func, None, count=8, wait=0.5)
assertmsg = '"{}" JSON output mismatches'.format(router.name)
assert result is None, assertmsg
def test_memory_leak():
"Run the memory leak test and report results."
tgen = get_topogen()
if not tgen.is_memleak_enabled():
pytest.skip('Memory leak test/report is disabled')
tgen.report_memory_leaks()
if __name__ == '__main__':
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))