void (*err_hook)(struct birdsock *, int); /* errno or zero if EOF */
- ip_addr faddr; /* For packet protocols: source of current packet */
- unsigned fport;
+ /* Information about received datagrams (UDP, RAW), valid in rx_hook */
+ ip_addr faddr, laddr; /* src (From) and dst (Local) address of the datagram */
+ unsigned fport; /* src port of the datagram */
+ unsigned lifindex; /* local interface that received the datagram */
+ /* laddr and lifindex are valid only if SKF_LADDR_RX flag is set to request it */
int fd; /* System-dependent data */
node n;
/* Socket flags */
-#define SKF_V6ONLY 1 /* Use IPV6_V6ONLY socket option */
+#define SKF_V6ONLY 1 /* Use IPV6_V6ONLY socket option */
+#define SKF_LADDR_RX 2 /* Report local address for RX packets */
+#define SKF_LADDR_TX 4 /* Allow to specify local address for TX packets */
/*
{ proto_xxable($3, XX_RELOAD_OUT); } ;
CF_CLI_HELP(DEBUG, ..., [[Control protocol debugging via BIRD logs]])
-CF_CLI(DEBUG, proto_patt debug_mask, (<protocol> | <pattern> | all) (all | off | { states | routes | filters | events | packets }), [[Control protocol debugging via BIRD logs]])
+CF_CLI(DEBUG, proto_patt debug_mask, (<protocol> | <pattern> | all) (all | off | { states | routes | filters | interfaces | events | packets }), [[Control protocol debugging via BIRD logs]])
{ proto_debug($2, 0, $3); }
;
{
case NEIGHBOR_EXSTART: /* Send empty packets */
n->myimms.bit.i = 1;
- pkt = (struct ospf_dbdes_packet *) (ifa->sk->tbuf);
- op = (struct ospf_packet *) pkt;
+ pkt = ospf_tx_buffer();
+ op = &pkt->ospf_packet;
ospf_pkt_fill_hdr(ifa, pkt, DBDES_P);
pkt->iface_mtu = htons(ifa->iface->mtu);
pkt->options = hton_opt(oa->options);
}
/* Copy last sent packet again */
- memcpy(ifa->sk->tbuf, n->ldbdes, length);
+ pkt = ospf_tx_buffer();
+ memcpy(pkt, n->ldbdes, length);
- OSPF_PACKET(ospf_dump_dbdes, (struct ospf_dbdes_packet *) ifa->sk->tbuf,
- "DBDES packet sent to %I via %s", n->ip, ifa->iface->name);
+ OSPF_PACKET(ospf_dump_dbdes, pkt, "DBDES packet sent to %I via %s", n->ip, ifa->iface->name);
ospf_send_to(ifa, n->ip);
if(n->myimms.bit.ms) tm_start(n->rxmt_timer, n->ifa->rxmtint); /* Restart timer */
{
struct proto_ospf *po = ifa->oa->po;
struct proto *p = &po->proto;
- char *beg = "Bad OSPF HELLO packet from ", *rec = " received: ";
+ char *beg = "OSPF: Bad HELLO packet from ";
unsigned int size, i, twoway, oldpriority, eligible, peers;
u32 olddr, oldbdr, oldiface_id, tmp;
u32 *pnrid;
size = ntohs(ps_i->length);
if (size < sizeof(struct ospf_hello_packet))
{
- log(L_ERR "%s%I - too short (%u B)", beg, faddr, size);
+ log(L_ERR "%s%I - too short (%u B)", beg, faddr, size);
return;
}
#ifdef OSPFv2
ip_addr mask = ps->netmask;
ipa_ntoh(mask);
- if (ifa->type != OSPF_IT_VLINK)
- {
- char *msg = L_WARN "Received HELLO packet %s (%I) is inconsistent "
- "with the primary address of interface %s.";
-
- if ((ifa->type != OSPF_IT_PTP) &&
- !ipa_equal(mask, ipa_mkmask(ifa->iface->addr->pxlen)))
- {
- if (!n) log(msg, "netmask", mask, ifa->iface->name);
- return;
- }
-
- /* This check is not specified in RFC 2328, but it is needed
- * to handle the case when there is more IP networks on one
- * physical network (which is not handled in RFC 2328).
- * We allow OSPF on primary IP address only and ignore HELLO packets
- * with secondary addresses (which are sent for example by Quagga.
- */
- if ((ifa->iface->addr->flags & IA_UNNUMBERED) ?
- !ipa_equal(faddr, ifa->iface->addr->opposite) :
- !ipa_equal(ipa_and(faddr,mask), ifa->iface->addr->prefix))
- {
- if (!n) log(msg, "address", faddr, ifa->iface->name);
- return;
- }
- }
+ if ((ifa->type != OSPF_IT_VLINK) &&
+ (ifa->type != OSPF_IT_PTP) &&
+ !ipa_equal(mask, ipa_mkmask(ifa->addr->pxlen)))
+ {
+ log(L_ERR "%s%I - netmask mismatch (%I)", beg, faddr, mask);
+ return;
+ }
#endif
tmp = ntohs(ps->helloint);
if (tmp != ifa->helloint)
{
- log(L_ERR "%s%I%shello interval mismatch (%d).", beg, faddr, rec, tmp);
+ log(L_ERR "%s%I - hello interval mismatch (%d)", beg, faddr, tmp);
return;
}
#endif
if (tmp != ifa->dead)
{
- log(L_ERR "%s%I%sdead interval mismatch (%d).", beg, faddr, rec, tmp);
+ log(L_ERR "%s%I - dead interval mismatch (%d)", beg, faddr, tmp);
return;
}
tmp = !(ps->options & OPT_E);
if (tmp != ifa->oa->stub)
{
- log(L_ERR "%s%I%sstub area flag mismatch (%d).", beg, faddr, rec, tmp);
+ log(L_ERR "%s%I - stub area flag mismatch (%d)", beg, faddr, tmp);
return;
}
}
if ((found == 0) && (ifa->strictnbma))
{
- log(L_WARN "Ignoring new neighbor: %I on %s.", faddr,
+ log(L_WARN "Ignoring new neighbor: %I on %s", faddr,
ifa->iface->name);
return;
}
}
}
}
- OSPF_TRACE(D_EVENTS, "New neighbor found: %I on %s.", faddr,
+ OSPF_TRACE(D_EVENTS, "New neighbor found: %I on %s", faddr,
ifa->iface->name);
n = ospf_neighbor_new(ifa);
p->name, ifa->iface->name);
/* Now we should send a hello packet */
- pkt = (struct ospf_hello_packet *) (ifa->sk->tbuf);
- op = (struct ospf_packet *) pkt;
+ pkt = ospf_tx_buffer();
+ op = &pkt->ospf_packet;
/* Now fill ospf_hello header */
ospf_pkt_fill_hdr(ifa, pkt, HELLO_P);
#ifdef OSPFv2
- pkt->netmask = ipa_mkmask(ifa->iface->addr->pxlen);
+ pkt->netmask = ipa_mkmask(ifa->addr->pxlen);
ipa_hton(pkt->netmask);
if ((ifa->type == OSPF_IT_VLINK) || (ifa->type == OSPF_IT_PTP))
pkt->netmask = IPA_NONE;
}
}
-static sock *
-ospf_open_socket(struct ospf_iface *ifa, int mc)
+static int
+ospf_sk_open(struct ospf_iface *ifa, int mc)
{
- sock *ipsk;
+ sock *sk;
struct proto *p = &ifa->oa->po->proto;
- ipsk = sk_new(p->pool);
- ipsk->type = SK_IP;
- ipsk->dport = OSPF_PROTO;
+ sk = sk_new(p->pool);
+ sk->type = SK_IP;
+ sk->dport = OSPF_PROTO;
#ifdef OSPFv2
/*
*
* We want such filter in the vlink (non-mc) socket.
*/
- ipsk->saddr = mc ? IPA_NONE : ifa->iface->addr->ip;
+ sk->saddr = mc ? IPA_NONE : ifa->addr->ip;
#else /* OSPFv3 */
- ipsk->saddr = ifa->lladdr;
+ sk->saddr = ifa->addr->ip; /* link-local addr */
#endif
- ipsk->tos = IP_PREC_INTERNET_CONTROL;
- ipsk->ttl = 1;
+ sk->tos = IP_PREC_INTERNET_CONTROL;
+ sk->ttl = 1;
if (ifa->type == OSPF_IT_VLINK)
- ipsk->ttl = 255;
- ipsk->rx_hook = ospf_rx_hook;
- ipsk->tx_hook = ospf_tx_hook;
- ipsk->err_hook = ospf_err_hook;
- ipsk->iface = ifa->iface;
- ipsk->rbsize = rxbufsize(ifa);
- ipsk->tbsize = ifa->iface->mtu;
- ipsk->data = (void *) ifa;
- if (sk_open(ipsk) != 0)
+ sk->ttl = 255;
+ sk->rx_hook = ospf_rx_hook;
+ sk->tx_hook = ospf_tx_hook;
+ sk->err_hook = ospf_err_hook;
+ sk->iface = ifa->iface;
+ sk->rbsize = rxbufsize(ifa);
+ sk->tbsize = ifa->iface->mtu;
+ sk->data = (void *) ifa;
+ sk->flags = SKF_LADDR_RX;
+
+ if (sk_open(sk) != 0)
goto err;
#ifdef OSPFv3
/* 12 is an offset of the checksum in an OSPF packet */
- if (sk_set_ipv6_checksum(ipsk, 12) < 0)
+ if (sk_set_ipv6_checksum(sk, 12) < 0)
goto err;
#endif
- if (mc)
- {
- if (sk_setup_multicast(ipsk) < 0)
- goto err;
-
- if (sk_join_group(ipsk, AllSPFRouters) < 0)
- goto err;
- }
+ if (mc && (sk_setup_multicast(sk) < 0))
+ goto err;
- return ipsk;
+ ifa->sk = sk;
+ ifa->sk_spf = 0;
+ ifa->sk_dr = 0;
+ return 1;
err:
- rfree(ipsk);
- return NULL;
+ rfree(sk);
+ return 0;
+}
+
+static inline void
+ospf_sk_join_spf(struct ospf_iface *ifa)
+{
+ if (ifa->sk_spf)
+ return;
+
+ sk_join_group(ifa->sk, AllSPFRouters);
+ ifa->sk_spf = 1;
+}
+
+static inline void
+ospf_sk_join_dr(struct ospf_iface *ifa)
+{
+ if (ifa->sk_dr)
+ return;
+
+ sk_join_group(ifa->sk, AllDRouters);
+ ifa->sk_dr = 1;
+}
+
+static inline void
+ospf_sk_leave_spf(struct ospf_iface *ifa)
+{
+ if (!ifa->sk_spf)
+ return;
+
+ sk_leave_group(ifa->sk, AllSPFRouters);
+ ifa->sk_spf = 0;
+}
+
+static inline void
+ospf_sk_leave_dr(struct ospf_iface *ifa)
+{
+ if (!ifa->sk_dr)
+ return;
+
+ sk_leave_group(ifa->sk, AllDRouters);
+ ifa->sk_dr = 0;
+}
+
+static inline void
+ospf_sk_close(struct ospf_iface *ifa)
+{
+ ASSERT(ifa->sk);
+
+ rfree(ifa->sk);
+ ifa->sk = NULL;
}
"Changing state of virtual link %R from \"%s\" into \"%s\".",
ifa->vid, ospf_is[oldstate], ospf_is[state]);
if (state == OSPF_IS_PTP)
- {
- ifa->sk = ospf_open_socket(ifa, 0);
- }
+ ospf_sk_open(ifa, 0);
+ if (state == OSPF_IS_DOWN)
+ ospf_sk_close(ifa);
}
else
{
{
if ((ifa->type != OSPF_IT_NBMA) && (ifa->ioprob == OSPF_I_OK) &&
((state == OSPF_IS_BACKUP) || (state == OSPF_IS_DR)))
- {
- if (!ifa->dr_up == 0)
- {
- /* FIXME some error handing ? */
- sk_join_group(ifa->sk, AllDRouters);
- ifa->dr_up = 1;
- }
- }
- else if (ifa->dr_up)
- {
- sk_leave_group(ifa->sk, AllDRouters);
- ifa->dr_up = 0;
- }
+ 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;
ifa->net_lsa = NULL;
}
}
+ // FIXME flushling of link LSA
}
}
}
struct proto *p = &po->proto;
struct ospf_iface *iff;
+ OSPF_TRACE(D_EVENTS, "Removing interface %s", ifa->iface->name);
+
/* First of all kill all the related vlinks */
if (ifa->type != OSPF_IT_VLINK)
{
WALK_LIST(iff, po->iface_list)
{
if ((iff->type == OSPF_IT_VLINK) && (iff->iface == ifa->iface))
- ospf_iface_down(iff);
+ ospf_iface_sm(iff, ISM_DOWN);
}
}
ospf_neigh_remove(n);
}
- rfree(ifa->sk);
- ifa->sk = NULL;
-
if (ifa->type == OSPF_IT_VLINK)
{
ifa->iface = NULL;
}
else
{
+ ospf_sk_close(ifa);
rfree(ifa->wait_timer);
rfree(ifa->hello_timer);
rfree(ifa->poll_timer);
case ISM_DOWN:
ospf_iface_chstate(ifa, OSPF_IS_DOWN);
ospf_iface_down(ifa);
- schedule_link_lsa(ifa);
schedule_rt_lsa(oa);
break;
- case ISM_LOOP: /* Useless? */
+ /*
+ case ISM_LOOP:
ospf_iface_chstate(ifa, OSPF_IS_LOOP);
- ospf_iface_down(ifa);
- schedule_rt_lsa(ifa->oa);
break;
case ISM_UNLOOP:
ospf_iface_chstate(ifa, OSPF_IS_DOWN);
- schedule_rt_lsa(ifa->oa);
break;
+ */
default:
bug("OSPF_I_SM - Unknown event?");
break;
}
-#if 0
-static sock *
-ospf_open_mc_socket(struct ospf_iface *ifa)
-{
- sock *mcsk;
- struct proto *p = &ifa->oa->po->proto;
-
- mcsk = sk_new(p->pool);
- mcsk->type = SK_IP_MC;
- mcsk->sport = 0;
- mcsk->dport = OSPF_PROTO;
-
-#ifdef OSPFv2
- mcsk->saddr = AllSPFRouters;
-#else /* OSPFv3 */
- // mcsk->saddr = AllSPFRouters;
- mcsk->saddr = ifa->lladdr;
-#endif
-
- mcsk->daddr = AllSPFRouters;
- mcsk->tos = IP_PREC_INTERNET_CONTROL;
- mcsk->ttl = 1;
- mcsk->rx_hook = ospf_rx_hook;
- mcsk->tx_hook = ospf_tx_hook;
- mcsk->err_hook = ospf_err_hook;
- mcsk->iface = ifa->iface;
- mcsk->rbsize = rxbufsize(ifa);
- mcsk->tbsize = ifa->iface->mtu;
- mcsk->data = (void *) ifa;
- if (sk_open(mcsk) != 0)
- {
- DBG("%s: SK_OPEN: mc open failed.\n", p->name);
- return (NULL);
- }
- DBG("%s: SK_OPEN: mc opened.\n", p->name);
- return (mcsk);
-}
-#endif
-
u8
ospf_iface_clasify(struct iface * ifa)
{
ifa->ioprob = OSPF_I_OK;
- ifa->sk = ospf_open_socket(ifa, ifa->type != OSPF_IT_NBMA);
- if (ifa->sk == NULL)
+ ospf_sk_open(ifa, 1);
+ if (ifa->type != OSPF_IT_NBMA)
+ ospf_sk_join_spf(ifa);
+
+ if (0)
{
- log("%s: Huh? could not open ip socket on interface %s?", p->name,
+ log(L_ERR "%s: Huh? could not open ip socket on interface %s?", p->name,
iface->name);
- log("%s: Declaring as stub.", p->name);
+ log(L_ERR "%s: Declaring as stub.", p->name);
ifa->stub = 1;
ifa->ioprob += OSPF_I_IP;
}
struct object_lock *lock;
struct ospf_area *oa;
+ 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->iface = iface;
#ifdef OSPFv2
ifa->autype = ip->autype;
ifa->passwords = ip->passwords;
+ ifa->addr = iface->addr;
#endif
#ifdef OSPFv3
ifa->instance_id = ip->instance_id;
- ifa->lladdr = IPA_NONE;
+ ifa->addr = NULL;
/* Find link-local address */
if (ifa->type != OSPF_IT_VLINK)
WALK_LIST(a, iface->addrs)
if (a->scope == SCOPE_LINK)
{
- ifa->lladdr = a->ip;
+ ifa->addr = a;
break;
}
- if (! ipa_nonzero(ifa->lladdr))
+ if (! ifa->addr)
log(L_WARN "%s: Missing link local address on interface %s", p->name, iface->name);
}
#endif
}
if (ip)
- {
- OSPF_TRACE(D_EVENTS, "Using interface %s.", iface->name);
ospf_iface_new(po, iface, ac, ip);
- }
}
if (flags & IF_CHANGE_DOWN)
{
if ((ifa = ospf_iface_find((struct proto_ospf *) p, iface)) != NULL)
- {
- OSPF_TRACE(D_EVENTS, "Killing interface %s.", iface->name);
ospf_iface_sm(ifa, ISM_DOWN);
- }
}
if (flags & IF_CHANGE_MTU)
{
init_list(&ifa->neigh_list);
hello_timer_hook(ifa->hello_timer);
+ ospf_sk_close(ifa);
}
if (EMPTY_LIST(n->ackl[queue]))
return;
- pk = (struct ospf_lsack_packet *) ifa->sk->tbuf;
- op = (struct ospf_packet *) ifa->sk->tbuf;
+ pk = ospf_tx_buffer();
+ op = &pk->ospf_packet;
ospf_pkt_fill_hdr(n->ifa, pk, LSACK_P);
h = pk->lsh;
op->length = htons(len);
DBG("Sending and continuing! Len=%u\n", len);
- OSPF_PACKET(ospf_dump_lsack, (struct ospf_lsack_packet *) ifa->sk->tbuf,
- "LSACK packet sent via %s", ifa->iface->name);
+ OSPF_PACKET(ospf_dump_lsack, pk, "LSACK packet sent via %s", ifa->iface->name);
if (ifa->type == OSPF_IT_BCAST)
{
op->length = htons(len);
DBG("Sending! Len=%u\n", len);
- OSPF_PACKET(ospf_dump_lsack, (struct ospf_lsack_packet *) ifa->sk->tbuf,
- "LSACK packet sent via %s", ifa->iface->name);
+ OSPF_PACKET(ospf_dump_lsack, pk, "LSACK packet sent via %s", ifa->iface->name);
if (ifa->type == OSPF_IT_BCAST)
{
int i, j;
struct proto *p = &n->ifa->oa->po->proto;
- pk = (struct ospf_lsreq_packet *) n->ifa->sk->tbuf;
- op = (struct ospf_packet *) n->ifa->sk->tbuf;
+ pk = ospf_tx_buffer();
+ op = &pk->ospf_packet;
ospf_pkt_fill_hdr(n->ifa, pk, LSREQ_P);
i) * sizeof(struct ospf_lsreq_header);
op->length = htons(length);
- OSPF_PACKET(ospf_dump_lsreq, (struct ospf_lsreq_packet *) n->ifa->sk->tbuf,
- "LSREQ packet sent to %I via %s", n->ip, n->ifa->iface->name);
+ OSPF_PACKET(ospf_dump_lsreq, pk, "LSREQ packet sent to %I via %s", n->ip, n->ifa->iface->name);
ospf_send_to(n->ifa, n->ip);
}
struct ospf_packet *op;
struct ospf_lsa_header *lh;
- pk = (struct ospf_lsupd_packet *) ifa->sk->tbuf;
- op = (struct ospf_packet *) ifa->sk->tbuf;
+ pk = ospf_tx_buffer();
+ op = &pk->ospf_packet;
ospf_pkt_fill_hdr(ifa, pk, LSUPD_P);
pk->lsano = htonl(1);
op->length = htons(len);
- OSPF_PACKET(ospf_dump_lsupd, (struct ospf_lsupd_packet *) ifa->sk->tbuf,
- "LSUPD packet flooded via %s", ifa->iface->name);
+ OSPF_PACKET(ospf_dump_lsupd, pk, "LSUPD packet flooded via %s", ifa->iface->name);
switch (ifa->type)
{
if (EMPTY_LIST(*l))
return;
- pk = (struct ospf_lsupd_packet *) n->ifa->sk->tbuf;
- op = (struct ospf_packet *) n->ifa->sk->tbuf;
-
DBG("LSupd: 1st packet\n");
+ pk= ospf_tx_buffer();
+ op = &pk->ospf_packet;
+
ospf_pkt_fill_hdr(n->ifa, pk, LSUPD_P);
len = sizeof(struct ospf_lsupd_packet);
lsano = 0;
pk->lsano = htonl(lsano);
op->length = htons(len);
- OSPF_PACKET(ospf_dump_lsupd, (struct ospf_lsupd_packet *) n->ifa->sk->tbuf,
- "LSUPD packet sent to %I via %s", n->ip, n->ifa->iface->name);
+ OSPF_PACKET(ospf_dump_lsupd, pk, "LSUPD packet sent to %I via %s", n->ip, n->ifa->iface->name);
ospf_send_to(n->ifa, n->ip);
DBG("LSupd: next packet\n");
pk->lsano = htonl(lsano);
op->length = htons(len);
- OSPF_PACKET(ospf_dump_lsupd, (struct ospf_lsupd_packet *) n->ifa->sk->tbuf,
- "LSUPD packet sent to %I via %s", n->ip, n->ifa->iface->name);
+ OSPF_PACKET(ospf_dump_lsupd, pk, "LSUPD packet sent to %I via %s", n->ip, n->ifa->iface->name);
ospf_send_to(n->ifa, n->ip);
}
}
unsigned int size = ntohs(ps_i->length);
if (size < (sizeof(struct ospf_lsupd_packet) + sizeof(struct ospf_lsa_header)))
{
- log(L_ERR "Bad OSPF LSUPD packet from %I - too short (%u B)", n->ip, size);
+ log(L_ERR "OSPF: Bad LSUPD packet from %I - too short (%u B)", n->ip, size);
return;
}
{
if (!nifa->iface)
continue;
- if (ipa_equal(nifa->iface->addr->ip, ipa_from_u32(lsatmp.id)))
+ if (ipa_equal(nifa->addr->ip, ipa_from_u32(lsatmp.id)))
{
self = 1;
break;
me.state = NEIGHBOR_2WAY;
me.rid = myid;
me.priority = ifa->priority;
+ me.ip = ifa->addr->ip;
#ifdef OSPFv2
- me.ip = ifa->iface->addr->ip;
me.dr = ipa_to_u32(ifa->drip);
me.bdr = ipa_to_u32(ifa->bdrip);
#else /* OSPFv3 */
- me.ip = ifa->lladdr;
me.dr = ifa->drid;
me.bdr = ifa->bdrid;
me.iface_id = ifa->iface->index;
OSPF_TRACE(D_EVENTS, "Shutdown requested");
/* And send to all my neighbors 1WAY */
- WALK_LIST(ifa, po->iface_list) ospf_iface_shutdown(ifa);
+ WALK_LIST(ifa, po->iface_list)
+ if (ifa->state > OSPF_IS_DOWN)
+ ospf_iface_shutdown(ifa);
return PS_DOWN;
}
lsa_get_ipv6_prefix(ls->prefix, &ip, &pxlen, &pxopts, &rest);
#endif
- cli_msg(-1016, "\t\txnetwork %I/%d", ip, pxlen);
+ cli_msg(-1016, "\t\txnetwork %I/%d metric %u", ip, pxlen, ls->metric);
}
static inline void
options = ls->options & OPTIONS_MASK;
#endif
- cli_msg(-1016, "\t\txrouter %R", dst_rid);
+ cli_msg(-1016, "\t\txrouter %R metric %u", dst_rid, ls->metric);
}
{
node n;
struct iface *iface; /* Nest's iface */
+ struct ifa *addr;
struct ospf_area *oa;
struct object_lock *lock;
sock *sk; /* IP socket (for DD ...) */
u32 dr_iface_id; /* if drid is valid, this is iface_id of DR (for connecting network) */
u8 instance_id; /* Used to differentiate between more OSPF
instances on one interface */
- ip_addr lladdr; /* Used link-local addr */
#endif
u8 type; /* OSPF view of type */
#endif
int fadj; /* Number of full adjacent neigh */
list nbma_list;
- u8 priority; /* A router priority for DR election */
+ u8 priority; /* A router priority for DR election */
u8 ioprob;
- u8 dr_up; /* Socket is a member of DRouters group */
+ u8 sk_spf; /* Socket is a member of SPFRouters group */
+ u8 sk_dr; /* Socket is a member of DRouters group */
u32 rxbuf;
};
#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 /* Loop indicated */
+// #define ISM_UNLOOP 5 /* Unloop indicated */
#define ISM_DOWN 6 /* Interface down */
/* Definitions for neighbor state machine */
static int
ospf_pkt_checkauth(struct ospf_neighbor *n, struct ospf_iface *ifa, struct ospf_packet *pkt, int size)
{ return 1; }
+
+#endif
+
+static struct ospf_iface *
+find_matching_iface(struct ospf_packet *ps, unsigned ifindex, ip_addr faddr)
+{
+ u32 areaid = ntohl(ps->areaid);
+ u32 rid = ntohl(ps->routerid);
+ node *nd;
+
+ /* First, we will try to match real ifaces */
+ WALK_LIST(nd, ospf_ifaces)
+ {
+ struct ospf_iface *ifa = SKIP_BACK(struct ospf_iface, sk_node, nd);
+ struct ifa *addr = ifa->addr;
+
+ if ((ifa->iface->index == ifindex) &&
+ (ifa->oa->areaid == areaid) &&
+#ifdef OSPFv2
+ ((addr->flags & IA_UNNUMBERED) ?
+ ipa_equal(faddr, addr->opposite) :
+ ipa_in_net(faddr, addr->prefix, addr->pxlen))
+#else /* OSPFv3 */
+ (ifa->instance_id == ps->instance_id)
#endif
+ )
+ return ifa;
+ }
+
+ /* Second, we will try to match vlinks */
+
+ if (areaid != 0)
+ return NULL;
+
+ /* FIXME: There should be some more checks to distinquish parallel
+ vlinks to the same ABR. */
+
+ WALK_LIST(nd, ospf_vlinks)
+ {
+ struct ospf_iface *ifa = SKIP_BACK(struct ospf_iface, sk_node, nd);
+
+ if ((ifa->vid == rid)
+#ifdef OSPFv3
+ && (ifa->instance_id == ps->instance_id)
+#endif
+ )
+ return ifa;
+ }
+
+ return NULL;
+}
/**
* ospf_rx_hook
- * @sk: socket we received the packet. Its ignored.
+ * @sk: socket we received the packet.
* @size: size of the packet
*
* This is the entry point for messages from neighbors. Many checks (like
* non generic functions.
*/
int
-ospf_rx_hook(sock * sk, int size)
+ospf_rx_hook(sock *sk, int size)
{
- struct ospf_packet *ps;
- struct ospf_iface *ifa = (struct ospf_iface *) (sk->data);
- struct proto_ospf *po = ifa->oa->po;
- struct proto *p = &po->proto;
- struct ospf_neighbor *n;
- int osize;
- char *mesg = "Bad OSPF packet from ";
- struct ospf_iface *iff;
+ char *mesg = "OSPF: Bad packet from ";
- if (ifa->stub)
- return (1);
+ DBG("OSPF: RX_Hook called (from %I)\n", sk->faddr);
- ps = (struct ospf_packet *) ip_skip_header(sk->rbuf, &size);
+ /* First, we check packet size, checksum, and the protocol version */
+ struct ospf_packet *ps = (struct ospf_packet *) ip_skip_header(sk->rbuf, &size);
if (ps == NULL)
{
return 1;
}
- /* We receive packets related to vlinks even on non-vlink sockets */
- if ((ifa->oa->areaid != 0) && (ntohl(ps->areaid) == 0))
- {
- WALK_LIST(iff, po->iface_list)
- {
- if ((iff->type == OSPF_IT_VLINK) && (iff->iface == ifa->iface) &&
- (iff->voa = ifa->oa) && ipa_equal(sk->faddr, iff->vip))
- {
- return 1; /* Packet is for VLINK */
- }
- }
- }
-
- DBG("%s: RX_Hook called on interface %s.\n", p->name, sk->iface->name);
-
if ((unsigned) size < sizeof(struct ospf_packet))
{
log(L_ERR "%s%I - too short (%u bytes)", mesg, sk->faddr, size);
return 1;
}
- osize = ntohs(ps->length);
+ int osize = ntohs(ps->length);
if ((osize > size) || ((osize % 4) != 0))
{
log(L_ERR "%s%I - size field does not match (%d/%d)", mesg, sk->faddr, osize, size);
return 1;
}
+ if ((unsigned) size > sk->rbsize)
+ {
+ log(L_ERR "%s%I - too large (%d vs %d)", mesg, sk->faddr, size, sk->rbsize);
+ return 1;
+ }
+
if (ps->version != OSPF_VERSION)
{
log(L_ERR "%s%I - version %u", mesg, sk->faddr, ps->version);
}
#endif
- if (ntohl(ps->areaid) != ifa->oa->areaid)
+
+ /* Now, we would like to associate the packet with an OSPF iface */
+ struct ospf_iface *ifa = find_matching_iface(ps, sk->lifindex, sk->faddr);
+ if (ifa == NULL)
{
- log(L_ERR "%s%I - different area (%u)", mesg, sk->faddr, ntohl(ps->areaid));
+ /* We limit logging of unmatched packets as it may be perfectly OK */
+ if (unmatched_count < 8)
+ {
+ struct iface *ifc = if_find_by_index(sk->lifindex);
+ log(L_WARN "OSPF: Received unmatched packet (src %I, iface %s, rtid %R, area %R)",
+ sk->faddr, ifc ? ifc->name : "?", ntohl(ps->routerid), ntohl(ps->areaid));
+ unmatched_count++;
+ }
+
return 1;
}
- /* FIXME - handling of instance id should be better */
-#ifdef OSPFv3
- if (ps->instance_id != ifa->instance_id)
- {
- log(L_ERR "%s%I - different instance (%u)", mesg, sk->faddr, ps->instance_id);
+ struct proto_ospf *po = ifa->oa->po;
+ struct proto *p = &po->proto;
+
+ if (ifa->stub) /* This shouldn't happen */
+ return 1;
+
+ if (ipa_equal(sk->laddr, AllDRouters) && (ifa->sk_dr == 0))
return 1;
- }
-#endif
if (ntohl(ps->routerid) == po->router_id)
{
return 1;
}
- if ((unsigned) size > sk->rbsize)
- {
- log(L_ERR "%s%I - packet is too large (%d vs %d)",
- mesg, sk->faddr, size, sk->rbsize);
- return 1;
- }
-
/* This is deviation from RFC 2328 - neighbours should be identified by
* IP address on broadcast and NBMA networks.
*/
- n = find_neigh(ifa, ntohl(ps->routerid));
+ struct ospf_neighbor *n = find_neigh(ifa, ntohl(ps->routerid));
if(!n && (ps->type != HELLO_P))
{
- OSPF_TRACE(D_PACKETS, "Received non-hello packet from uknown neighbor (%I)", sk->faddr);
+ log(L_WARN "OSPF: Received non-hello packet from uknown neighbor (src %I, iface %s)",
+ sk->faddr, ifa->iface->name);
return 1;
}
void
ospf_tx_hook(sock * sk)
{
- struct ospf_iface *ifa= (struct ospf_iface *) (sk->data);
- struct proto *p = (struct proto *) (ifa->oa->po);
- log(L_ERR "%s: TX_Hook called on interface %s\n", p->name, sk->iface->name);
+// struct ospf_iface *ifa= (struct ospf_iface *) (sk->data);
+// struct proto *p = (struct proto *) (ifa->oa->po);
+ log(L_ERR "OSPF: TX_Hook called");
}
void
ospf_err_hook(sock * sk, int err)
{
- struct ospf_iface *ifa= (struct ospf_iface *) (sk->data);
- struct proto *p = (struct proto *) (ifa->oa->po);
- log(L_ERR "%s: Err_Hook called on interface %s with err=%d\n",
- p->name, sk->iface->name, err);
+// struct ospf_iface *ifa= (struct ospf_iface *) (sk->data);
+// struct proto *p = (struct proto *) (ifa->oa->po);
+ log(L_ERR "OSPF: Socket error: %m", err);
}
void
{
struct ospf_neighbor *n;
- WALK_LIST(n, ifa->neigh_list) if (n->state >= state)
- ospf_send_to(ifa, n->ip);
+ WALK_LIST(n, ifa->neigh_list)
+ if (n->state >= state)
+ ospf_send_to(ifa, n->ip);
}
void
}
void
-ospf_send_to(struct ospf_iface *ifa, ip_addr ip)
+ospf_send_to(struct ospf_iface *ifa, ip_addr dst)
{
sock *sk = ifa->sk;
struct ospf_packet *pkt = (struct ospf_packet *) sk->tbuf;
ospf_pkt_finalize(ifa, pkt);
if (sk->tbuf != sk->tpos)
- log(L_ERR "Aiee, old packet was overwritted in TX buffer");
+ log(L_ERR "Aiee, old packet was overwritten in TX buffer");
- if (ipa_equal(ip, IPA_NONE))
- sk_send(sk, len);
- else
- sk_send_to(sk, len, ip, OSPF_PROTO);
+ sk_send_to(sk, len, dst, 0);
}
void ospf_send_to_bdr(struct ospf_iface *ifa);
void ospf_send_to(struct ospf_iface *ifa, ip_addr ip);
+static inline void * ospf_tx_buffer() { return ospf_socket->tbuf; }
#endif /* _BIRD_OSPF_PACKET_H_ */
WALK_LIST(iff, po->iface_list) /* Try to find corresponding interface */
{
+ // FIXME this is broken
if (iff->iface && (iff->type != OSPF_IT_VLINK) &&
- (rtl->id == (ipa_to_u32(ipa_mkmask(iff->iface->addr->pxlen))
- & ipa_to_u32(iff->iface->addr->prefix)))) /* No VLINK and IP must match */
+ (rtl->id == (ipa_to_u32(ipa_mkmask(iff->addr->pxlen))
+ & ipa_to_u32(iff->addr->prefix)))) /* No VLINK and IP must match */
{
nf.ifa = iff;
break;
OSPF_TRACE(D_EVENTS, "Vlink peer %R found", tmp->lsa.id);
ospf_iface_sm(iface, ISM_DOWN);
iface->iface = tmp->nhi->iface;
+ iface->addr = iface->iface->addr;
iface->vip = tmp->lb;
ospf_iface_sm(iface, ISM_UP);
}
if (iface->state > OSPF_IS_DOWN)
{
OSPF_TRACE(D_EVENTS, "Vlink peer %R lost", iface->vid);
- ospf_iface_sm(iface, ISM_DOWN);
+ ospf_iface_sm(iface, ISM_DOWN);
}
}
}
metric = ls->metric & METRIC_MASK;
options = 0;
type = ORT_NET;
- re = (ort *) fib_find(&po->rtf, &ip, pxlen);
+ re = fib_find(&po->rtf, &ip, pxlen);
}
else if (en->lsa.type == LSA_T_SUM_RT)
{
metric = ls->metric & METRIC_MASK;
options |= ORTA_ASBR;
type = ORT_ROUTER;
- re = (ort *) fib_find(&bb->rtr, &ip, pxlen);
+ re = fib_find(&bb->rtr, &ip, pxlen);
}
/* 16.3 (1b) */
continue;
/* 16.3 (3) */
- if (!re) continue;
+ if (!re || !re->n.type) continue;
if (re->n.oa->areaid != 0) continue;
if ((re->n.type != RTS_OSPF) && (re->n.type != RTS_OSPF_IA)) continue;
/* 16.3. (4) */
abrip = ipa_from_rid(en->lsa.rt);
abr = fib_find(&oa->rtr, &abrip, MAX_PREFIX_LENGTH);
- if (!abr) continue;
+ if (!abr || !abr->n.type) continue;
nf.type = re->n.type;
nf.options = options;
/* Page 169 (4) */
abrip = ipa_from_rid(en->lsa.rt);
- if (!(abr = (ort *) fib_find(&oa->rtr, &abrip, MAX_PREFIX_LENGTH))) continue;
+
+ abr = (ort *) fib_find(&oa->rtr, &abrip, MAX_PREFIX_LENGTH);
+ if (!abr || !abr->n.type) continue;
if (abr->n.metric1 == LSINFINITY) continue;
if (!(abr->n.options & ORTA_ABR)) continue;
WALK_LIST(atmp, po->area_list)
{
nfh = fib_find(&atmp->rtr, &rtid, MAX_PREFIX_LENGTH);
- if (nfh == NULL) continue;
+ if (!nfh || !nfh->n.type) continue;
if (nf1 == NULL) nf1 = nfh;
else if (ri_better(po, &nfh->n, NULL, &nf1->n, NULL, po->rfc1583)) nf1 = nfh;
}
WALK_LIST(ifa, po->iface_list)
{
- int master = 0;
+ int net_lsa = 0;
if ((ifa->type == OSPF_IT_VLINK) && (ifa->voa == oa) &&
(!EMPTY_LIST(ifa->neigh_list)))
ln = lsab_alloc(po, sizeof(struct ospf_lsa_rt_link));
ln->type = LSART_PTP;
ln->id = neigh->rid;
- ln->data = (ifa->iface->addr->flags & IA_UNNUMBERED) ?
- ifa->iface->index : ipa_to_u32(ifa->iface->addr->ip);
+ ln->data = (ifa->addr->flags & IA_UNNUMBERED) ?
+ ifa->iface->index : ipa_to_u32(ifa->addr->ip);
ln->metric = ifa->cost;
ln->padding = 0;
i++;
- master = 1;
}
break;
ln = lsab_alloc(po, sizeof(struct ospf_lsa_rt_link));
ln->type = LSART_NET;
ln->id = ipa_to_u32(ifa->drip);
- ln->data = ipa_to_u32(ifa->iface->addr->ip);
+ ln->data = ipa_to_u32(ifa->addr->ip);
ln->metric = ifa->cost;
ln->padding = 0;
i++;
- master = 1;
+ net_lsa = 1;
}
break;
ln = lsab_alloc(po, sizeof(struct ospf_lsa_rt_link));
ln->type = LSART_VLNK;
ln->id = neigh->rid;
- ln->data = ipa_to_u32(ifa->iface->addr->ip);
+ ln->data = ipa_to_u32(ifa->addr->ip);
ln->metric = ifa->cost;
ln->padding = 0;
i++;
- master = 1;
}
break;
struct ifa *a;
WALK_LIST(a, ifa->iface->addrs)
{
- if (((a == ifa->iface->addr) && master) ||
+ if (((a == ifa->addr) && net_lsa) ||
(a->flags & IA_SECONDARY) ||
(a->flags & IA_UNNUMBERED) ||
configured_stubnet(oa, a))
continue;
-
ln = lsab_alloc(po, sizeof(struct ospf_lsa_rt_link));
ln->type = LSART_STUB;
ln->id = ipa_to_u32(a->prefix);
+ nodes * sizeof(u32));
#ifdef OSPFv2
- net->netmask = ipa_mkmask(ifa->iface->addr->pxlen);
+ net->netmask = ipa_mkmask(ifa->addr->pxlen);
#endif
#ifdef OSPFv3
#ifdef OSPFv2
lsa.options = ifa->oa->options;
- lsa.id = ipa_to_u32(ifa->iface->addr->ip);
+ lsa.id = ipa_to_u32(ifa->addr->ip);
#else /* OSPFv3 */
lsa.id = ifa->iface->index;
#endif
struct proto_ospf *po = oa->po;
struct proto *p = &po->proto;
struct top_hash_entry *en;
- u32 dom = oa->areaid;
+ u32 dom = oa->areaid;
+ u32 rid = ipa_to_rid(fn->prefix);
struct ospf_lsa_header lsa;
void *body;
OSPF_TRACE(D_EVENTS, "Originating rt-summary-LSA for %R (metric %d)",
- lsa.id, metric);
+ rid, metric);
lsa.age = 0;
#ifdef OSPFv2
#endif
lsa.type = LSA_T_SUM_RT;
/* In OSPFv3, LSA ID is meaningless, but we still use Router ID of ASBR */
- lsa.id = ipa_to_rid(fn->prefix);
+ lsa.id = rid;
lsa.rt = po->router_id;
lsa.sn = LSA_INITSEQNO;
ASSERT(po->lsab_used == 0);
ll = lsab_allocz(po, sizeof(struct ospf_lsa_link));
ll->options = ifa->oa->options | (ifa->priority << 24);
- ll->lladdr = ifa->lladdr;
+ ll->lladdr = ifa->addr->ip;
ll = NULL; /* buffer might be reallocated later */
struct ifa *a;
static inline void
set_inaddr(struct in6_addr * ia, ip_addr a)
{
- ipa_hton(a);
- memcpy(ia, &a, sizeof(a));
+ ipa_hton(a);
+ memcpy(ia, &a, sizeof(a));
+}
+
+static inline void
+get_inaddr(ip_addr *a, struct in6_addr *ia)
+{
+ memcpy(a, ia, sizeof(*a));
+ ipa_ntoh(*a);
}
#else
#include <net/if.h>
+#include <net/if_dl.h>
static inline void
set_inaddr(struct in_addr * ia, ip_addr a)
{
- ipa_hton(a);
- memcpy(&ia->s_addr, &a, sizeof(a));
+ ipa_hton(a);
+ memcpy(&ia->s_addr, &a, sizeof(a));
+}
+
+static inline void
+get_inaddr(ip_addr *a, struct in_addr *ia)
+{
+ memcpy(a, &ia->s_addr, sizeof(*a));
+ ipa_ntoh(*a);
}
+
+/* BSD Multicast handling for IPv4 */
+
static inline char *
sysio_setup_multicast(sock *s)
{
return NULL;
}
+
+/* BSD RX/TX packet info handling for IPv4 */
+/* it uses IP_RECVDSTADDR / IP_RECVIF socket options instead of IP_PKTINFO */
+
+#define CMSG_RX_SPACE (CMSG_SPACE(sizeof(struct in_addr)) + CMSG_SPACE(sizeof(struct sockaddr_dl)))
+#define CMSG_TX_SPACE CMSG_SPACE(sizeof(struct in_addr))
+
+static char *
+sysio_register_cmsgs(sock *s)
+{
+ int ok = 1;
+ if (s->flags & SKF_LADDR_RX)
+ {
+ if (setsockopt(s->fd, IPPROTO_IP, IP_RECVDSTADDR, &ok, sizeof(ok)) < 0)
+ return "IP_RECVDSTADDR";
+
+ if (setsockopt(s->fd, IPPROTO_IP, IP_RECVIF, &ok, sizeof(ok)) < 0)
+ return "IP_RECVIF";
+ }
+
+ return NULL;
+}
+
+static void
+sysio_process_rx_cmsgs(sock *s, struct msghdr *msg)
+{
+ struct cmsghdr *cm;
+
+ if (!(s->flags & SKF_LADDR_RX))
+ return;
+
+ s->laddr = IPA_NONE;
+ s->lifindex = 0;
+
+ for (cm = CMSG_FIRSTHDR(msg); cm != NULL; cm = CMSG_NXTHDR(msg, cm))
+ {
+ if (cm->cmsg_level == IPPROTO_IP && cm->cmsg_type == IP_RECVDSTADDR)
+ {
+ struct in_addr *ra = (struct in_addr *) CMSG_DATA(cm);
+ get_inaddr(&s->laddr, ra);
+ }
+
+ if (cm->cmsg_level == IPPROTO_IP && cm->cmsg_type == IP_RECVIF)
+ {
+ struct sockaddr_dl *ri = (struct sockaddr_dl *) CMSG_DATA(cm);
+ s->lifindex = ri->sdl_index;
+ }
+ }
+
+ // log(L_WARN "RX %I %d", s->laddr, s->lifindex);
+}
+
+
+void
+sysio_prepare_tx_cmsgs(sock *s, struct msghdr *msg)
+{
+ struct cmsghdr *cm;
+ struct in_addr *sa;
+
+ if (!(s->flags & SKF_LADDR_TX))
+ {
+ msg->msg_controllen = 0;
+ return;
+ }
+
+ if (s->iface)
+ {
+ struct in_addr m;
+// set_inaddr(&m, s->iface->addr->ip);
+ set_inaddr(&m, s->saddr);
+ setsockopt(s->fd, IPPROTO_IP, IP_MULTICAST_IF, &m, sizeof(m));
+ }
+
+ cm = CMSG_FIRSTHDR(msg);
+ cm->cmsg_level = IPPROTO_IP;
+ cm->cmsg_type = IP_SENDSRCADDR;
+ cm->cmsg_len = CMSG_LEN(sizeof(*sa));
+
+ sa = (struct in_addr *) CMSG_DATA(cm);
+ set_inaddr(sa, s->saddr);
+
+ msg->msg_controllen = cm->cmsg_len;
+}
+
#endif
memcpy(ia, &a, sizeof(a));
}
+static inline void
+get_inaddr(ip_addr *a, struct in6_addr *ia)
+{
+ memcpy(a, ia, sizeof(*a));
+ ipa_ntoh(*a);
+}
+
#else
#include <net/if.h>
memcpy(&ia->s_addr, &a, sizeof(a));
}
+static inline void
+get_inaddr(ip_addr *a, struct in_addr *ia)
+{
+ memcpy(a, &ia->s_addr, sizeof(*a));
+ ipa_ntoh(*a);
+}
+
/*
* Multicasting in Linux systems is a real mess. Not only different kernels
* have different interfaces, but also different libc's export it in different
return rv;
}
+
+
+#ifndef IPV6
+
+/* RX/TX packet info handling for IPv4 */
+/* Mostly similar to standardized IPv6 code */
+
+#define CMSG_RX_SPACE CMSG_SPACE(sizeof(struct in_pktinfo))
+#define CMSG_TX_SPACE CMSG_SPACE(sizeof(struct in_pktinfo))
+
+static char *
+sysio_register_cmsgs(sock *s)
+{
+ int ok = 1;
+ if ((s->flags & SKF_LADDR_RX) &&
+ setsockopt(s->fd, IPPROTO_IP, IP_PKTINFO, &ok, sizeof(ok)) < 0)
+ return "IP_PKTINFO";
+
+ return NULL;
+}
+
+static void
+sysio_process_rx_cmsgs(sock *s, struct msghdr *msg)
+{
+ struct cmsghdr *cm;
+ struct in_pktinfo *pi = NULL;
+
+ if (!(s->flags & SKF_LADDR_RX))
+ return;
+
+ for (cm = CMSG_FIRSTHDR(msg); cm != NULL; cm = CMSG_NXTHDR(msg, cm))
+ {
+ if (cm->cmsg_level == IPPROTO_IP && cm->cmsg_type == IP_PKTINFO)
+ pi = (struct in_pktinfo *) CMSG_DATA(cm);
+ }
+
+ if (!pi)
+ {
+ s->laddr = IPA_NONE;
+ s->lifindex = 0;
+ return;
+ }
+
+ get_inaddr(&s->laddr, &pi->ipi_addr);
+ s->lifindex = pi->ipi_ifindex;
+ return;
+}
+
+
+void
+sysio_prepare_tx_cmsgs(sock *s, struct msghdr *msg)
+{
+ struct cmsghdr *cm;
+ struct in_pktinfo *pi;
+
+ if (!(s->flags & SKF_LADDR_TX))
+ {
+ msg->msg_controllen = 0;
+ return;
+ }
+
+ cm = CMSG_FIRSTHDR(msg);
+ cm->cmsg_level = IPPROTO_IP;
+ cm->cmsg_type = IP_PKTINFO;
+ cm->cmsg_len = CMSG_LEN(sizeof(*pi));
+
+ pi = (struct in_pktinfo *) CMSG_DATA(cm);
+ set_inaddr(&pi->ipi_spec_dst, s->saddr);
+ pi->ipi_ifindex = s->iface ? s->iface->index : 0;
+
+ msg->msg_controllen = cm->cmsg_len;
+}
+#endif
sk_setup(sock *s)
{
int fd = s->fd;
- char *err;
+ char *err = NULL;
if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
ERR("fcntl(O_NONBLOCK)");
if (s->ttl >= 0)
err = sk_set_ttl_int(s);
- else
- err = NULL;
+ sysio_register_cmsgs(s);
bad:
return err;
}
return 0;
}
+/* PKTINFO handling is also standardized in IPv6 */
+#define CMSG_RX_SPACE CMSG_SPACE(sizeof(struct in6_pktinfo))
+
+static char *
+sysio_register_cmsgs(sock *s)
+{
+ int ok = 1;
+ if ((s->flags & SKF_LADDR_RX) &&
+ setsockopt(s->fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &ok, sizeof(ok)) < 0)
+ return "IPV6_RECVPKTINFO";
+
+ return NULL;
+}
+
+void
+sysio_process_rx_cmsgs(sock *s, struct msghdr *msg)
+{
+ struct cmsghdr *cm;
+ struct in6_pktinfo *pi = NULL;
+
+ if (!(s->flags & SKF_LADDR_RX))
+ return;
+
+ for (cm = CMSG_FIRSTHDR(msg); cm != NULL; cm = CMSG_NXTHDR(msg, cm))
+ {
+ if (cm->cmsg_level == IPPROTO_IPV6 && cm->cmsg_type == IPV6_PKTINFO)
+ pi = (struct in6_pktinfo *) CMSG_DATA(cm);
+ }
+
+ if (!pi)
+ {
+ s->laddr = IPA_NONE;
+ s->lifindex = 0;
+ return;
+ }
+
+ get_inaddr(&s->laddr, &pi->ipi6_addr);
+ s->lifindex = pi->ipi6_ifindex;
+ return;
+}
+
+void
+sysio_prepare_tx_cmsgs(sock *s, struct msghdr *msg)
+{
+ struct cmsghdr *cm;
+ struct in6_pktinfo *pi;
+
+ if (!(s->flags & SKF_LADDR_TX))
+ {
+ msg->msg_controllen = 0;
+ return;
+ }
+
+ cm = CMSG_FIRSTHDR(msg);
+ cm->cmsg_level = IPPROTO_IPV6;
+ cm->cmsg_type = PIV6_PKTINFO;
+ cm->cmsg_len = CMSG_LEN(sizeof(*pi));
+
+ pi = (struct in6_pktinfo *) CMSG_DATA(cm);
+ set_inaddr(&pi->ipi6_addr, s->saddr);
+ pi->ipi6_ifindex = s->iface ? s->iface->index : 0;
+
+ msg->msg_controllen = cmsg->cmsg_len;
+ return;
+}
+
#else /* IPV4 */
int
return -1;
}
+static inline void reset_tx_buffer(sock *s) { s->ttx = s->tpos = s->tbuf; }
+
static int
sk_maybe_write(sock *s)
{
{
if (errno != EINTR && errno != EAGAIN)
{
- s->ttx = s->tpos; /* empty tx buffer */
+ reset_tx_buffer(s);
s->err_hook(s, errno);
return -1;
}
}
s->ttx += e;
}
- s->ttx = s->tpos = s->tbuf;
+ reset_tx_buffer(s);
return 1;
case SK_UDP:
case SK_IP:
{
- sockaddr sa;
-
if (s->tbuf == s->tpos)
return 1;
- fill_in_sockaddr(&sa, s->faddr, s->fport);
+ sockaddr sa;
+ fill_in_sockaddr(&sa, s->daddr, s->dport);
fill_in_sockifa(&sa, s->iface);
- e = sendto(s->fd, s->tbuf, s->tpos - s->tbuf, 0, (struct sockaddr *) &sa, sizeof(sa));
+
+ struct iovec iov = {s->tbuf, s->tpos - s->tbuf};
+ byte cmsg_buf[CMSG_TX_SPACE];
+
+ struct msghdr msg = {
+ .msg_name = &sa,
+ .msg_namelen = sizeof(sa),
+ .msg_iov = &iov,
+ .msg_iovlen = 1,
+ .msg_control = cmsg_buf,
+ .msg_controllen = sizeof(cmsg_buf),
+ .msg_flags = 0};
+
+ sysio_prepare_tx_cmsgs(s, &msg);
+ e = sendmsg(s->fd, &msg, 0);
+
if (e < 0)
{
if (errno != EINTR && errno != EAGAIN)
{
- s->ttx = s->tpos; /* empty tx buffer */
+ reset_tx_buffer(s);
s->err_hook(s, errno);
return -1;
}
return 0;
}
- s->tpos = s->tbuf;
+ reset_tx_buffer(s);
return 1;
}
default:
int
sk_send(sock *s, unsigned len)
{
- s->faddr = s->daddr;
- s->fport = s->dport;
s->ttx = s->tbuf;
s->tpos = s->tbuf + len;
return sk_maybe_write(s);
int
sk_send_to(sock *s, unsigned len, ip_addr addr, unsigned port)
{
- s->faddr = addr;
- s->fport = port;
+ s->daddr = addr;
+ s->dport = port;
s->ttx = s->tbuf;
s->tpos = s->tbuf + len;
return sk_maybe_write(s);
}
+/*
+int
+sk_send_full(sock *s, unsigned len, struct iface *ifa,
+ ip_addr saddr, ip_addr daddr, unsigned dport)
+{
+ s->iface = ifa;
+ s->saddr = saddr;
+ s->daddr = daddr;
+ s->dport = dport;
+ s->ttx = s->tbuf;
+ s->tpos = s->tbuf + len;
+ return sk_maybe_write(s);
+}
+*/
+
static int
sk_read(sock *s)
{
default:
{
sockaddr sa;
- int al = sizeof(sa);
- int e = recvfrom(s->fd, s->rbuf, s->rbsize, 0, (struct sockaddr *) &sa, &al);
+ int e;
+
+ struct iovec iov = {s->rbuf, s->rbsize};
+ byte cmsg_buf[CMSG_RX_SPACE];
+
+ struct msghdr msg = {
+ .msg_name = &sa,
+ .msg_namelen = sizeof(sa),
+ .msg_iov = &iov,
+ .msg_iovlen = 1,
+ .msg_control = cmsg_buf,
+ .msg_controllen = sizeof(cmsg_buf),
+ .msg_flags = 0};
+
+ e = recvmsg(s->fd, &msg, 0);
if (e < 0)
{
}
s->rpos = s->rbuf + e;
get_sockaddr(&sa, &s->faddr, &s->fport, 1);
+ sysio_process_rx_cmsgs(s, &msg);
+
s->rx_hook(s, e);
return 1;
}
projects / thirdparty / bird.git / commitdiff
