Jerry/bird
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Adds support for iface link detection to OSPF.

Browse source
This commit is contained in:
Ondrej Zajicek 2010-11-13 14:19:23 +01:00
parent fe181e7c63
commit d9e7e1b13d
6 changed files with 203 additions and 171 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
proto/ospf/config.Y
View file

@ -192,13 +192,14 @@ ospf_iface_item:
| TYPE POINTOPOINT { OSPF_PATT->type = OSPF_IT_PTP ; }
| STRICT NONBROADCAST bool { OSPF_PATT->strictnbma = $3 ; }
| STUB bool { OSPF_PATT->stub = $2 ; }
| LINK bool { OSPF_PATT->use_link = $2 ; }
| NEIGHBORS '{' ipa_list '}'
| AUTHENTICATION NONE { OSPF_PATT->autype = OSPF_AUTH_NONE ; }
| AUTHENTICATION SIMPLE { OSPF_PATT->autype = OSPF_AUTH_SIMPLE ; }
| AUTHENTICATION CRYPTOGRAPHIC { OSPF_PATT->autype = OSPF_AUTH_CRYPT ; }
| RX BUFFER LARGE { OSPF_PATT->rxbuf = OSPF_RXBUF_LARGE ; }
| RX BUFFER NORMAL { OSPF_PATT->rxbuf = OSPF_RXBUF_NORMAL ; }
| RX BUFFER expr { OSPF_PATT->rxbuf = $3 ; if ($3 < OSPF_RXBUF_MINSIZE) cf_error("Buffer size is too small") ; }
| RX BUFFER expr { OSPF_PATT->rxbuf = $3 ; if (($3 < OSPF_RXBUF_MINSIZE) || ($3 > OSPF_MAX_PKT_SIZE)) cf_error("Buffer size must be in range 256-65535"); }
| password_list
;
@ -275,6 +276,7 @@ ospf_iface_start:
OSPF_PATT->type = OSPF_IT_UNDEF;
OSPF_PATT->strictnbma = 0;
OSPF_PATT->stub = 0;
OSPF_PATT->use_link = 1;
init_list(&OSPF_PATT->nbma_list);
OSPF_PATT->autype = OSPF_AUTH_NONE;
reset_passwords();

257
proto/ospf/iface.c
View file

@ -60,10 +60,7 @@ rxbufsize(struct ospf_iface *ifa)
static int
ospf_sk_open(struct ospf_iface *ifa)
{
sock *sk;
struct proto *p = &ifa->oa->po->proto;
sk = sk_new(p->pool);
sock *sk = sk_new(ifa->pool);
sk->type = SK_IP;
sk->dport = OSPF_PROTO;
sk->saddr = IPA_NONE;
@ -162,72 +159,6 @@ ospf_sk_leave_dr(struct ospf_iface *ifa)
ifa->sk_dr = 0;
}
static inline void
ospf_sk_close(struct ospf_iface *ifa)
{
ASSERT(ifa->sk);
rfree(ifa->sk);
ifa->sk = NULL;
}
/**
* ospf_iface_chstate - handle changes of interface state
* @ifa: OSPF interface
* @state: new state
*
* Many actions must be taken according to interface state changes. New network
* LSAs must be originated, flushed, new multicast sockets to listen for messages for
* %ALLDROUTERS have to be opened, etc.
*/
void
ospf_iface_chstate(struct ospf_iface *ifa, u8 state)
{
struct proto_ospf *po = ifa->oa->po;
struct proto *p = &po->proto;
u8 oldstate = ifa->state;
if (oldstate != state)
{
ifa->state = state;
if (ifa->type == OSPF_IT_VLINK)
{
OSPF_TRACE(D_EVENTS,
"Changing state of virtual link %R from \"%s\" into \"%s\".",
ifa->vid, ospf_is[oldstate], ospf_is[state]);
}
else
{
OSPF_TRACE(D_EVENTS,
"Changing state of iface: %s from \"%s\" into \"%s\".",
ifa->iface->name, ospf_is[oldstate], ospf_is[state]);
if (ifa->iface->flags & IF_MULTICAST)
{
if ((ifa->type != OSPF_IT_NBMA) && (ifa->ioprob == OSPF_I_OK) &&
((state == OSPF_IS_BACKUP) || (state == OSPF_IS_DR)))
ospf_sk_join_dr(ifa);
else
ospf_sk_leave_dr(ifa);
if ((oldstate == OSPF_IS_DR) && (ifa->net_lsa != NULL))
{
ifa->net_lsa->lsa.age = LSA_MAXAGE;
if (state >= OSPF_IS_WAITING)
{
ospf_lsupd_flush_nlsa(po, ifa->net_lsa);
}
if (can_flush_lsa(po))
flush_lsa(ifa->net_lsa, po);
ifa->net_lsa = NULL;
}
}
// FIXME flushling of link LSA
}
}
}
static void
ospf_iface_down(struct ospf_iface *ifa)
{
@ -254,6 +185,15 @@ ospf_iface_down(struct ospf_iface *ifa)
ospf_neigh_remove(n);
}
if (ifa->hello_timer)
tm_stop(ifa->hello_timer);
if (ifa->poll_timer)
tm_stop(ifa->poll_timer);
if (ifa->wait_timer)
tm_stop(ifa->wait_timer);
if (ifa->type == OSPF_IT_VLINK)
{
ifa->vifa = NULL;
@ -262,18 +202,70 @@ ospf_iface_down(struct ospf_iface *ifa)
ifa->sk = NULL;
ifa->cost = 0;
ifa->vip = IPA_NONE;
return;
}
else
}
static void
ospf_iface_remove(struct ospf_iface *ifa)
{
ospf_sk_close(ifa);
rfree(ifa->wait_timer);
rfree(ifa->hello_timer);
rfree(ifa->poll_timer);
rfree(ifa->lock);
ospf_iface_sm(ifa, ISM_DOWN);
rem_node(NODE ifa);
mb_free(ifa);
rfree(ifa->pool);
}
/**
* ospf_iface_chstate - handle changes of interface state
* @ifa: OSPF interface
* @state: new state
*
* Many actions must be taken according to interface state changes. New network
* LSAs must be originated, flushed, new multicast sockets to listen for messages for
* %ALLDROUTERS have to be opened, etc.
*/
void
ospf_iface_chstate(struct ospf_iface *ifa, u8 state)
{
struct proto_ospf *po = ifa->oa->po;
struct proto *p = &po->proto;
u8 oldstate = ifa->state;
if (oldstate == state)
return;
ifa->state = state;
if (ifa->type == OSPF_IT_VLINK)
OSPF_TRACE(D_EVENTS, "Changing state of virtual link %R from %s to %s",
ifa->vid, ospf_is[oldstate], ospf_is[state]);
else
OSPF_TRACE(D_EVENTS, "Changing state of iface %s from %s to %s",
ifa->iface->name, ospf_is[oldstate], ospf_is[state]);
if (ifa->type == OSPF_IT_BCAST)
{
if ((state == OSPF_IS_BACKUP) || (state == OSPF_IS_DR))
ospf_sk_join_dr(ifa);
else
ospf_sk_leave_dr(ifa);
}
if ((oldstate == OSPF_IS_DR) && (ifa->net_lsa != NULL))
{
ifa->net_lsa->lsa.age = LSA_MAXAGE;
if (state >= OSPF_IS_WAITING)
ospf_lsupd_flush_nlsa(po, ifa->net_lsa);
if (can_flush_lsa(po))
flush_lsa(ifa->net_lsa, po);
ifa->net_lsa = NULL;
}
if ((oldstate > OSPF_IS_LOOP) && (state <= OSPF_IS_LOOP))
ospf_iface_down(ifa);
schedule_rt_lsa(ifa->oa);
// FIXME flushling of link LSA
}
/**
@ -281,21 +273,22 @@ ospf_iface_down(struct ospf_iface *ifa)
* @ifa: OSPF interface
* @event: event comming to state machine
*
* This fully respects 9.3 of RFC 2328 except we don't use %LOOP state of
* interface.
* This fully respects 9.3 of RFC 2328 except we have slightly
* different handling of %DOWN and %LOOP state. We remove intefaces
* that are %DOWN. %DOWN state is used when an interface is waiting
* for a lock. %LOOP state is used when an interface does not have a
* link.
*/
void
ospf_iface_sm(struct ospf_iface *ifa, int event)
{
struct ospf_area *oa = ifa->oa;
DBG("SM on %s %s. Event is '%s'\n", (ifa->type == OSPF_IT_VLINK) ? "vlink" : "iface",
ifa->iface ? ifa->iface->name : "(none)" , ospf_ism[event]);
switch (event)
{
case ISM_UP:
if (ifa->state == OSPF_IS_DOWN)
if (ifa->state <= OSPF_IS_LOOP)
{
/* Now, nothing should be adjacent */
if ((ifa->type == OSPF_IT_PTP) || (ifa->type == OSPF_IT_VLINK))
@ -319,10 +312,10 @@ ospf_iface_sm(struct ospf_iface *ifa, int event)
tm_start(ifa->poll_timer, ifa->pollint);
hello_timer_hook(ifa->hello_timer);
}
schedule_link_lsa(ifa);
schedule_rt_lsa(ifa->oa);
}
break;
case ISM_BACKS:
case ISM_WAITF:
if (ifa->state == OSPF_IS_WAITING)
@ -330,6 +323,7 @@ ospf_iface_sm(struct ospf_iface *ifa, int event)
bdr_election(ifa);
}
break;
case ISM_NEICH:
if ((ifa->state == OSPF_IS_DROTHER) || (ifa->state == OSPF_IS_DR) ||
(ifa->state == OSPF_IS_BACKUP))
@ -338,19 +332,22 @@ ospf_iface_sm(struct ospf_iface *ifa, int event)
schedule_rt_lsa(ifa->oa);
}
break;
case ISM_DOWN:
ospf_iface_chstate(ifa, OSPF_IS_DOWN);
ospf_iface_down(ifa);
schedule_rt_lsa(oa);
break;
/*
case ISM_LOOP:
if (ifa->sk && ifa->use_link)
ospf_iface_chstate(ifa, OSPF_IS_LOOP);
break;
case ISM_UNLOOP:
/* Immediate go UP */
if (ifa->state == OSPF_IS_LOOP)
ospf_iface_sm(ifa, ISM_UP);
break;
case ISM_DOWN:
ospf_iface_chstate(ifa, OSPF_IS_DOWN);
break;
*/
default:
bug("OSPF_I_SM - Unknown event?");
break;
@ -391,8 +388,6 @@ ospf_iface_add(struct object_lock *lock)
struct proto_ospf *po = ifa->oa->po;
struct proto *p = &po->proto;
ifa->lock = lock;
if (ospf_sk_open(ifa))
{
if (ifa->type != OSPF_IT_NBMA)
@ -405,8 +400,8 @@ ospf_iface_add(struct object_lock *lock)
ifa->stub = 1;
}
ifa->state = OSPF_IS_DOWN;
ospf_iface_sm(ifa, ISM_UP);
/* Do iface UP, unless there is no link and we use link detection */
ospf_iface_sm(ifa, (ifa->use_link && !(ifa->iface->flags & IF_LINK_UP)) ? ISM_LOOP : ISM_UP);
}
void
@ -414,6 +409,7 @@ ospf_iface_new(struct proto_ospf *po, struct iface *iface, struct ifa *addr,
struct ospf_area_config *ac, struct ospf_iface_patt *ip)
{
struct proto *p = &po->proto;
struct pool *pool = rp_new(p->pool, "OSPF Interface");
struct ospf_iface *ifa;
struct nbma_node *nbma, *nb;
struct object_lock *lock;
@ -422,9 +418,10 @@ ospf_iface_new(struct proto_ospf *po, struct iface *iface, struct ifa *addr,
if (ip->type != OSPF_IT_VLINK)
OSPF_TRACE(D_EVENTS, "Adding interface %s", iface->name);
ifa = mb_allocz(p->pool, sizeof(struct ospf_iface));
ifa = mb_allocz(pool, sizeof(struct ospf_iface));
ifa->iface = iface;
ifa->addr = addr;
ifa->pool = pool;
ifa->cost = ip->cost;
ifa->rxmtint = ip->rxmtint;
@ -438,6 +435,7 @@ ospf_iface_new(struct proto_ospf *po, struct iface *iface, struct ifa *addr,
ifa->stub = ospf_iface_stubby(ip, addr);
ifa->ioprob = OSPF_I_OK;
ifa->rxbuf = ip->rxbuf;
ifa->use_link = ip->use_link;
#ifdef OSPFv2
ifa->autype = ip->autype;
@ -475,40 +473,41 @@ ospf_iface_new(struct proto_ospf *po, struct iface *iface, struct ifa *addr,
if (!ipa_in_net(nb->ip, addr->prefix, addr->pxlen))
continue;
nbma = mb_alloc(p->pool, sizeof(struct nbma_node));
nbma = mb_alloc(pool, sizeof(struct nbma_node));
nbma->ip = nb->ip;
nbma->eligible = nb->eligible;
add_tail(&ifa->nbma_list, NODE nbma);
}
/* Add hello timer */
ifa->hello_timer = tm_new(p->pool);
DBG("%s: Installing hello timer. (%u)\n", p->name, ifa->helloint);
ifa->hello_timer = tm_new(pool);
ifa->hello_timer->data = ifa;
ifa->hello_timer->randomize = 0;
ifa->hello_timer->hook = hello_timer_hook;
ifa->hello_timer->recurrent = ifa->helloint;
DBG("%s: Installing hello timer. (%u)\n", p->name, ifa->helloint);
if (ifa->type == OSPF_IT_NBMA)
{
ifa->poll_timer = tm_new(p->pool);
DBG("%s: Installing poll timer. (%u)\n", p->name, ifa->pollint);
ifa->poll_timer = tm_new(pool);
ifa->poll_timer->data = ifa;
ifa->poll_timer->randomize = 0;
ifa->poll_timer->hook = poll_timer_hook;
ifa->poll_timer->recurrent = ifa->pollint;
DBG("%s: Installing poll timer. (%u)\n", p->name, ifa->pollint);
}
else
ifa->poll_timer = NULL;
ifa->wait_timer = tm_new(p->pool);
if ((ifa->type == OSPF_IT_BCAST) || (ifa->type == OSPF_IT_NBMA))
{
DBG("%s: Installing wait timer. (%u)\n", p->name, ifa->waitint);
ifa->wait_timer = tm_new(pool);
ifa->wait_timer->data = ifa;
ifa->wait_timer->randomize = 0;
ifa->wait_timer->hook = wait_timer_hook;
ifa->wait_timer->recurrent = 0;
DBG("%s: Installing wait timer. (%u)\n", p->name, ifa->waitint);
add_tail(&((struct proto_ospf *) p)->iface_list, NODE ifa);
}
ifa->state = OSPF_IS_DOWN;
add_tail(&po->iface_list, NODE ifa);
ifa->oa = NULL;
WALK_LIST(oa, po->area_list)
@ -539,7 +538,7 @@ ospf_iface_new(struct proto_ospf *po, struct iface *iface, struct ifa *addr,
* Therefore, we store such info to lock->addr field.
*/
lock = olock_new(p->pool);
lock = olock_new(pool);
#ifdef OSPFv2
lock->addr = ifa->addr->prefix;
#else /* OSPFv3 */
@ -597,7 +596,7 @@ ospf_ifa_notify(struct proto *p, unsigned flags, struct ifa *a)
WALK_LIST_DELSAFE(ifa, ifx, po->iface_list)
{
if ((ifa->type != OSPF_IT_VLINK) && (ifa->addr == a))
ospf_iface_sm(ifa, ISM_DOWN);
ospf_iface_remove(ifa);
/* See a note in ospf_iface_notify() */
}
}
@ -675,7 +674,7 @@ ospf_ifa_notify(struct proto *p, unsigned flags, struct ifa *a)
WALK_LIST_DELSAFE(ifa, ifx, po->iface_list)
{
if ((ifa->type != OSPF_IT_VLINK) && (ifa->addr == a))
ospf_iface_sm(ifa, ISM_DOWN);
ospf_iface_remove(ifa);
/* See a note in ospf_iface_notify() */
}
}
@ -725,36 +724,44 @@ ospf_iface_change_mtu(struct proto_ospf *po, struct ospf_iface *ifa)
}
}
static void
ospf_iface_notify(struct proto_ospf *po, unsigned flags, struct ospf_iface *ifa)
{
if (flags & IF_CHANGE_DOWN)
{
ospf_iface_remove(ifa);
return;
}
if (flags & IF_CHANGE_LINK)
ospf_iface_sm(ifa, (ifa->iface->flags & IF_LINK_UP) ? ISM_UNLOOP : ISM_LOOP);
if (flags & IF_CHANGE_MTU)
ospf_iface_change_mtu(po, ifa);
}
void
ospf_iface_notify(struct proto *p, unsigned flags, struct iface *iface)
ospf_if_notify(struct proto *p, unsigned flags, struct iface *iface)
{
struct proto_ospf *po = (struct proto_ospf *) p;
DBG("%s: If notify called\n", p->name);
if (iface->flags & IF_IGNORE)
return;
if (flags & IF_CHANGE_DOWN)
{
/* Going up means that there are no such ifaces yet */
if (flags & IF_CHANGE_UP)
return;
struct ospf_iface *ifa, *ifx;
WALK_LIST_DELSAFE(ifa, ifx, po->iface_list)
if ((ifa->type != OSPF_IT_VLINK) && (ifa->iface == iface))
ospf_iface_sm(ifa, ISM_DOWN);
ospf_iface_notify(po, flags, ifa);
/* We use here that even shutting down iface also shuts down
the vlinks, but vlinks are not freed and stays in the
iface_list even when down */
}
if (flags & IF_CHANGE_MTU)
{
struct ospf_iface *ifa;
WALK_LIST(ifa, po->iface_list)
if ((ifa->type != OSPF_IT_VLINK) && (ifa->iface == iface))
ospf_iface_change_mtu(po, ifa);
}
}
void
ospf_iface_info(struct ospf_iface *ifa)
{

2
proto/ospf/iface.h
View file

@ -13,7 +13,7 @@
void ospf_iface_chstate(struct ospf_iface *ifa, u8 state);
void ospf_iface_sm(struct ospf_iface *ifa, int event);
struct ospf_iface *ospf_iface_find(struct proto_ospf *p, struct iface *what);
void ospf_iface_notify(struct proto *p, unsigned flags, struct iface *iface);
void ospf_if_notify(struct proto *p, unsigned flags, struct iface *iface);
void ospf_ifa_notify(struct proto *p, unsigned flags, struct ifa *a);
void ospf_iface_info(struct ospf_iface *ifa);
void ospf_iface_shutdown(struct ospf_iface *ifa);

17
proto/ospf/ospf.c
View file

@ -269,7 +269,7 @@ ospf_init(struct proto_config *c)
p->reload_routes = ospf_reload_routes;
p->accept_ra_types = RA_OPTIMAL;
p->rt_notify = ospf_rt_notify;
p->if_notify = ospf_iface_notify;
p->if_notify = ospf_if_notify;
p->ifa_notify = ospf_ifa_notify;
p->rte_better = ospf_rte_better;
p->rte_same = ospf_rte_same;
@ -728,7 +728,7 @@ ospf_reconfigure(struct proto *p, struct proto_config *c)
}
/* POLL TIMER */
if (oldip->pollint != newip->pollint)
if ((oldip->pollint != newip->pollint) && ifa->poll_timer)
{
ifa->pollint = newip->helloint;
ifa->poll_timer->recurrent = ifa->pollint;
@ -758,6 +758,15 @@ ospf_reconfigure(struct proto *p, struct proto_config *c)
ospf_iface_change_mtu(po, ifa);
}
/* LINK */
if (oldip->use_link != newip->use_link)
{
ifa->use_link = newip->use_link;
if (!(ifa->iface->flags & IF_LINK_UP))
ospf_iface_sm(ifa, ifa->use_link ? ISM_LOOP : ISM_UNLOOP);
}
/* strict nbma */
if ((oldip->strictnbma == 0) && (newip->strictnbma != 0))
{
@ -819,7 +828,7 @@ ospf_reconfigure(struct proto *p, struct proto_config *c)
}
/* WAIT */
if (oldip->waitint != newip->waitint)
if ((oldip->waitint != newip->waitint) && ifa->wait_timer)
{
ifa->waitint = newip->waitint;
if (ifa->wait_timer->expires != 0)
@ -890,7 +899,7 @@ ospf_reconfigure(struct proto *p, struct proto_config *c)
}
if (!found)
{
nb1 = mb_alloc(p->pool, sizeof(struct nbma_node));
nb1 = mb_alloc(ifa->pool, sizeof(struct nbma_node));
nb1->ip = nb2->ip;
nb1->eligible = nb2->eligible;
add_tail(&ifa->nbma_list, NODE nb1);

16
proto/ospf/ospf.h
View file

@ -162,7 +162,7 @@ struct ospf_iface
struct iface *iface; /* Nest's iface */
struct ifa *addr; /* IP prefix associated with that OSPF iface */
struct ospf_area *oa;
struct object_lock *lock;
pool *pool;
sock *sk; /* IP socket (for DD ...) */
list neigh_list; /* List of neigbours */
u32 cost; /* Cost of iface */
@ -187,8 +187,8 @@ struct ospf_iface
#endif
ip_addr drip; /* Designated router */
u32 drid;
ip_addr bdrip; /* Backup DR */
u32 drid;
u32 bdrid;
#ifdef OSPFv3
@ -207,7 +207,7 @@ struct ospf_iface
u8 stub; /* Inactive interface */
u8 state; /* Interface state machine */
#define OSPF_IS_DOWN 0 /* Not working */
#define OSPF_IS_LOOP 1 /* Should never happen */
#define OSPF_IS_LOOP 1 /* Iface with no link */
#define OSPF_IS_WAITING 2 /* Waiting for Wait timer */
#define OSPF_IS_PTP 3 /* PTP operational */
#define OSPF_IS_DROTHER 4 /* I'm on BCAST or NBMA and I'm not DR */
@ -243,7 +243,8 @@ struct ospf_iface
#define OSPF_I_LL 2 /* Missing link-local address (OSPFv3) */
u8 sk_spf; /* Socket is a member of SPFRouters group */
u8 sk_dr; /* Socket is a member of DRouters group */
u32 rxbuf;
u16 rxbuf; /* Buffer size */
u8 use_link; /* Whether iface link change is used */
};
struct ospf_md5
@ -678,8 +679,8 @@ struct ospf_neighbor
#define ISM_WAITF 1 /* Wait timer fired */
#define ISM_BACKS 2 /* Backup seen */
#define ISM_NEICH 3 /* Neighbor change */
// #define ISM_LOOP 4 /* Loop indicated */
// #define ISM_UNLOOP 5 /* Unloop indicated */
#define ISM_LOOP 4 /* Link down */
#define ISM_UNLOOP 5 /* Link up */
#define ISM_DOWN 6 /* Interface down */
/* Definitions for neighbor state machine */
@ -751,7 +752,8 @@ struct ospf_iface_patt
u32 strictnbma;
u32 stub;
u32 vid;
u32 rxbuf;
u16 rxbuf;
u8 use_link;
#define OSPF_RXBUF_NORMAL 0
#define OSPF_RXBUF_LARGE 1
#define OSPF_RXBUF_MINSIZE 256 /* Minimal allowed size */

44
proto/ospf/topology.c
View file

@ -241,9 +241,6 @@ originate_rt_lsa_body(struct ospf_area *oa, u16 *length)
if ((ifa->oa != oa) || (ifa->state == OSPF_IS_DOWN))
continue;
/* BIRD does not support interface loops */
ASSERT(ifa->state != OSPF_IS_LOOP);
switch (ifa->type)
{
case OSPF_IT_PTP: /* RFC2328 - 12.4.1.1 */
@ -303,11 +300,24 @@ originate_rt_lsa_body(struct ospf_area *oa, u16 *length)
continue;
ln = lsab_alloc(po, sizeof(struct ospf_lsa_rt_link));
if (ifa->state == OSPF_IS_LOOP)
{
/* Host stub entry */
ln->type = LSART_STUB;
ln->id = ipa_to_u32(ifa->addr->ip);
ln->data = 0xffffffff;
ln->metric = 0;
ln->padding = 0;
}
else
{
/* Network stub entry */
ln->type = LSART_STUB;
ln->id = ipa_to_u32(ifa->addr->prefix);
ln->data = ipa_to_u32(ipa_mkmask(ifa->addr->pxlen));
ln->metric = ifa->cost;
ln->padding = 0;
}
i++;
}
@ -384,9 +394,6 @@ originate_rt_lsa_body(struct ospf_area *oa, u16 *length)
if ((ifa->oa != oa) || (ifa->state == OSPF_IS_DOWN))
continue;
/* BIRD does not support interface loops */
ASSERT(ifa->state != OSPF_IS_LOOP);
/* RFC5340 - 4.4.3.2 */
switch (ifa->type)
{
@ -1144,6 +1151,13 @@ update_link_lsa(struct ospf_iface *ifa)
ifa->origlink = 0;
}
static inline void
lsa_put_prefix(struct proto_ospf *po, ip_addr prefix, u32 pxlen, u32 cost)
{
put_ipv6_prefix(lsab_alloc(po, IPV6_PREFIX_SPACE(pxlen)), prefix, pxlen,
(pxlen < MAX_PREFIX_LENGTH) ? 0 : OPT_PX_LA, cost);
}
static void *
originate_prefix_rt_lsa_body(struct ospf_area *oa, u16 *length)
{
@ -1154,7 +1168,6 @@ originate_prefix_rt_lsa_body(struct ospf_area *oa, u16 *length)
int host_addr = 0;
int net_lsa;
int i = 0;
u8 flags;
ASSERT(po->lsab_used == 0);
lp = lsab_allocz(po, sizeof(struct ospf_lsa_prefix));
@ -1189,12 +1202,14 @@ originate_prefix_rt_lsa_body(struct ospf_area *oa, u16 *length)
configured_stubnet(oa, a))
continue;
flags = (a->pxlen < MAX_PREFIX_LENGTH) ? 0 : OPT_PX_LA;
put_ipv6_prefix(lsab_alloc(po, IPV6_PREFIX_SPACE(a->pxlen)),
a->ip, a->pxlen, flags, ifa->cost);
if (ifa->state == OSPF_IS_LOOP)
lsa_put_prefix(po, a->ip, MAX_PREFIX_LENGTH, 0);
else
lsa_put_prefix(po, a->prefix, a->pxlen, ifa->cost);
i++;
if (flags & OPT_PX_LA)
if ((ifa->state == OSPF_IS_LOOP) ||
(a->pxlen == MAX_PREFIX_LENGTH))
host_addr = 1;
}
}
@ -1203,8 +1218,7 @@ originate_prefix_rt_lsa_body(struct ospf_area *oa, u16 *length)
which will be used as a vlink endpoint. */
if (oa->ac && !EMPTY_LIST(oa->ac->vlink_list) && !host_addr && vlink_addr)
{
put_ipv6_prefix(lsab_alloc(po, IPV6_PREFIX_SPACE(MAX_PREFIX_LENGTH)),
vlink_addr->ip, MAX_PREFIX_LENGTH, OPT_PX_LA, 0);
lsa_put_prefix(po, vlink_addr->ip, MAX_PREFIX_LENGTH, 0);
i++;
}
@ -1213,9 +1227,7 @@ originate_prefix_rt_lsa_body(struct ospf_area *oa, u16 *length)
WALK_LIST(sn, oa->ac->stubnet_list)
if (!sn->hidden)
{
flags = (sn->px.len < MAX_PREFIX_LENGTH) ? 0 : OPT_PX_LA;
put_ipv6_prefix(lsab_alloc(po, IPV6_PREFIX_SPACE(sn->px.len)),
sn->px.addr, sn->px.len, flags, sn->cost);
lsa_put_prefix(po, sn->px.addr, sn->px.len, sn->cost);
i++;
}