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Many changes in I/O and OSPF sockets and packet handling.

Browse Source 
I/O:
 - BSD: specify src addr on IP sockets by IP_HDRINCL
 - BSD: specify src addr on UDP sockets by IP_SENDSRCADDR
 - Linux: specify src addr on IP/UDP sockets by IP_PKTINFO
 - IPv6: specify src addr on IP/UDP sockets by IPV6_PKTINFO
 - Alternative SKF_BIND flag for binding to IP address
 - Allows IP/UDP sockets without tx_hook, on these
   sockets a packet is discarded when TX queue is full
 - Use consistently SOL_ for socket layer values.

OSPF:
 - Packet src addr is always explicitly set
 - Support for secondary addresses in BSD
 - Dynamic RX/TX buffers
 - Fixes some minor buffer overruns
 - Interface option 'tx length'
 - Names for vlink pseudoifaces (vlinkX)
 - Vlinks use separate socket for TX
 - Vlinks do not use fixed associated iface
 - Fixes TTL for direct unicast packets
 - Fixes DONTROUTE for OSPF sockets
 - Use ifa->ifname instead of ifa->iface->name
This commit is contained in:
Ondrej Zajicek 2014-02-06 17:46:01 +01:00
parent f48fa14214
commit 48e5f32db6
26 changed files with 701 additions and 449 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
doc/bird.sgml
View File

@ -2212,7 +2212,9 @@ protocol ospf <name> {
wait <num>; wait <num>;
dead count <num>; dead count <num>;
dead <num>; dead <num>;
secondary <switch>;
rx buffer [normal|large|<num>]; rx buffer [normal|large|<num>];
tx length <num>;
type [broadcast|bcast|pointopoint|ptp| type [broadcast|bcast|pointopoint|ptp|
nonbroadcast|nbma|pointomultipoint|ptmp]; nonbroadcast|nbma|pointomultipoint|ptmp];
strict nonbroadcast <switch>; strict nonbroadcast <switch>;
@ -2419,12 +2421,32 @@ protocol ospf <name> {
<tag>dead <M>num</M></tag> <tag>dead <M>num</M></tag>
When the router does not receive any messages from a neighbor in When the router does not receive any messages from a neighbor in
<m/dead/ seconds, it will consider the neighbor down. If both directives <m/dead/ seconds, it will consider the neighbor down. If both directives
<m/dead count/ and <m/dead/ are used, <m/dead/ has precendence. <cf/dead count/ and <cf/dead/ are used, <cf/dead/ has precendence.
<tag>secondary <M>switch</M></tag>
On BSD systems, older versions of BIRD supported OSPFv2 only for the
primary IP address of an interface, other IP ranges on the interface
were handled as stub networks. Since v1.4.1, regular operation on
secondary IP addresses is supported, but disabled by default for
compatibility. This option allows to enable it. The option is a
transitional measure, will be removed in the next major release as the
behavior will be changed. On Linux systems, the option is irrelevant, as
operation on non-primary addresses is already the regular behavior.
<tag>rx buffer <M>num</M></tag> <tag>rx buffer <M>num</M></tag>
This sets the size of buffer used for receiving packets. The buffer should This option allows to specify the size of buffers used for packet
be bigger than maximal size of any packets. Value NORMAL (default) processing. The buffer size should be bigger than maximal size of any
means 2*MTU, value LARGE means maximal allowed packet - 65535. packets. By default, buffers are dynamically resized as needed, but a
fixed value could be specified. Value <cf/large/ means maximal allowed
packet size - 65535.
<tag>tx length <M>num</M></tag>
Transmitted OSPF messages that contain large amount of information are
segmented to separate OSPF packets to avoid IP fragmentation. This
option specifies the soft ceiling for the length of generated OSPF
packets. Default value is the MTU of the network interface. Note that
larger OSPF packets may still be generated if underlying OSPF messages
cannot be splitted (e.g. when one large LSA is propagated).
<tag>type broadcast|bcast</tag> <tag>type broadcast|bcast</tag>
BIRD detects a type of a connected network automatically, but BIRD detects a type of a connected network automatically, but

17
lib/resource.c
View File

@ -157,13 +157,13 @@ rfree(void *res)
{ {
resource *r = res; resource *r = res;
if (r) if (!r)
{ return;
if (r->n.next)
rem_node(&r->n); if (r->n.next)
r->class->free(r); rem_node(&r->n);
xfree(r); r->class->free(r);
} xfree(r);
} }
/** /**
@ -408,6 +408,9 @@ mb_realloc(void *m, unsigned size)
void void
mb_free(void *m) mb_free(void *m)
{ {
if (!m)
return;
struct mblock *b = SKIP_BACK(struct mblock, data, m); struct mblock *b = SKIP_BACK(struct mblock, data, m);
rfree(b); rfree(b);
} }

18
lib/socket.h
View File

@ -57,6 +57,9 @@ int sk_open(sock *); /* Open socket */
int sk_send(sock *, unsigned len); /* Send data, <0=err, >0=ok, 0=sleep */ int sk_send(sock *, unsigned len); /* Send data, <0=err, >0=ok, 0=sleep */
int sk_send_to(sock *, unsigned len, ip_addr to, unsigned port); /* sk_send to given destination */ int sk_send_to(sock *, unsigned len, ip_addr to, unsigned port); /* sk_send to given destination */
void sk_reallocate(sock *); /* Free and allocate tbuf & rbuf */ void sk_reallocate(sock *); /* Free and allocate tbuf & rbuf */
void sk_set_rbsize(sock *s, uint val); /* Resize RX buffer */
void sk_set_tbsize(sock *s, uint val); /* Resize TX buffer, keeping content */
void sk_set_tbuf(sock *s, void *tbuf); /* Switch TX buffer, NULL-> return to internal */
void sk_dump_all(void); void sk_dump_all(void);
int sk_set_ttl(sock *s, int ttl); /* Set transmit TTL for given socket */ int sk_set_ttl(sock *s, int ttl); /* Set transmit TTL for given socket */
int sk_set_min_ttl(sock *s, int ttl); /* Set minimal accepted TTL for given socket */ int sk_set_min_ttl(sock *s, int ttl); /* Set minimal accepted TTL for given socket */
@ -89,10 +92,13 @@ extern int sk_priority_control; /* Suggested priority for control traffic, shoul
#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_RX 2 /* Report local address for RX packets */
#define SKF_LADDR_TX 4 /* Allow to specify local address for TX packets */ #define SKF_TTL_RX 4 /* Report TTL / Hop Limit for RX packets */
#define SKF_TTL_RX 8 /* Report TTL / Hop Limit for RX packets */ #define SKF_BIND 8 /* Bind datagram socket to given source address */
#define SKF_THREAD 0x100 /* Socked used in thread, Do not add to main loop */ #define SKF_THREAD 0x100 /* Socked used in thread, Do not add to main loop */
#define SKF_TRUNCATED 0x200 /* Received packet was truncated, set by IO layer */
#define SKF_HDRINCL 0x400 /* Used internally */
#define SKF_PKTINFO 0x800 /* Used internally */
/* /*
* Socket types SA SP DA DP IF TTL SendTo (?=may, -=must not, *=must) * Socket types SA SP DA DP IF TTL SendTo (?=may, -=must not, *=must)
@ -118,6 +124,14 @@ extern int sk_priority_control; /* Suggested priority for control traffic, shoul
* call sk_setup_multicast() to enable multicast on that socket, * call sk_setup_multicast() to enable multicast on that socket,
* and then use sk_join_group() and sk_leave_group() to manage * and then use sk_join_group() and sk_leave_group() to manage
* a set of received multicast groups. * a set of received multicast groups.
*
* For datagram (SK_UDP, SK_IP) sockets, there are two ways to handle
* source address. The socket could be bound to it using bind()
* syscall, but that also forbids the reception of multicast packets,
* or the address could be set on per-packet basis using platform
* dependent options (but these are not available in some corner
* cases). The first way is used when SKF_BIND is specified, the
* second way is used otherwise.
*/ */
#endif #endif

2
proto/bfd/packets.c
View File

@ -230,7 +230,7 @@ bfd_open_tx_sk(struct bfd_proto *p, ip_addr local, struct iface *ifa)
sk->tos = IP_PREC_INTERNET_CONTROL; sk->tos = IP_PREC_INTERNET_CONTROL;
sk->priority = sk_priority_control; sk->priority = sk_priority_control;
sk->ttl = ifa ? 255 : -1; sk->ttl = ifa ? 255 : -1;
sk->flags = SKF_THREAD; sk->flags = SKF_THREAD | SKF_BIND;
#ifdef IPV6 #ifdef IPV6
sk->flags |= SKF_V6ONLY; sk->flags |= SKF_V6ONLY;

11
proto/ospf/config.Y
View File

@ -131,7 +131,8 @@ CF_KEYWORDS(NONE, SIMPLE, AUTHENTICATION, STRICT, CRYPTOGRAPHIC, TTL, SECURITY)
CF_KEYWORDS(ELIGIBLE, POLL, NETWORKS, HIDDEN, VIRTUAL, CHECK, LINK, ONLY, BFD) CF_KEYWORDS(ELIGIBLE, POLL, NETWORKS, HIDDEN, VIRTUAL, CHECK, LINK, ONLY, BFD)
CF_KEYWORDS(RX, BUFFER, LARGE, NORMAL, STUBNET, HIDDEN, SUMMARY, TAG, EXTERNAL) CF_KEYWORDS(RX, BUFFER, LARGE, NORMAL, STUBNET, HIDDEN, SUMMARY, TAG, EXTERNAL)
CF_KEYWORDS(WAIT, DELAY, LSADB, ECMP, LIMIT, WEIGHT, NSSA, TRANSLATOR, STABILITY) CF_KEYWORDS(WAIT, DELAY, LSADB, ECMP, LIMIT, WEIGHT, NSSA, TRANSLATOR, STABILITY)
CF_KEYWORDS(GLOBAL, LSID, ROUTER, SELF, INSTANCE, REAL, NETMASK, TX, PRIORITY) CF_KEYWORDS(GLOBAL, LSID, ROUTER, SELF, INSTANCE, REAL, NETMASK, TX, PRIORITY, LENGTH)
CF_KEYWORDS(SECONDARY)
%type <t> opttext %type <t> opttext
%type <ld> lsadb_args %type <ld> lsadb_args
@ -302,14 +303,16 @@ ospf_iface_item:
| AUTHENTICATION NONE { OSPF_PATT->autype = OSPF_AUTH_NONE ; } | AUTHENTICATION NONE { OSPF_PATT->autype = OSPF_AUTH_NONE ; }
| AUTHENTICATION SIMPLE { OSPF_PATT->autype = OSPF_AUTH_SIMPLE ; } | AUTHENTICATION SIMPLE { OSPF_PATT->autype = OSPF_AUTH_SIMPLE ; }
| AUTHENTICATION CRYPTOGRAPHIC { OSPF_PATT->autype = OSPF_AUTH_CRYPT ; } | AUTHENTICATION CRYPTOGRAPHIC { OSPF_PATT->autype = OSPF_AUTH_CRYPT ; }
| RX BUFFER LARGE { OSPF_PATT->rxbuf = OSPF_RXBUF_LARGE ; } | RX BUFFER NORMAL { OSPF_PATT->rx_buffer = 0; }
| RX BUFFER NORMAL { OSPF_PATT->rxbuf = OSPF_RXBUF_NORMAL ; } | RX BUFFER LARGE { OSPF_PATT->rx_buffer = OSPF_MAX_PKT_SIZE; }
| 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"); } | RX BUFFER expr { OSPF_PATT->rx_buffer = $3; if (($3 < OSPF_MIN_PKT_SIZE) || ($3 > OSPF_MAX_PKT_SIZE)) cf_error("Buffer size must be in range 256-65535"); }
| TX tos { OSPF_PATT->tx_tos = $2; } | TX tos { OSPF_PATT->tx_tos = $2; }
| TX PRIORITY expr { OSPF_PATT->tx_priority = $3; } | TX PRIORITY expr { OSPF_PATT->tx_priority = $3; }
| TX LENGTH expr { OSPF_PATT->tx_length = $3; if (($3 < OSPF_MIN_PKT_SIZE) || ($3 > OSPF_MAX_PKT_SIZE)) cf_error("TX length must be in range 256-65535"); }
| TTL SECURITY bool { OSPF_PATT->ttl_security = $3; } | TTL SECURITY bool { OSPF_PATT->ttl_security = $3; }
| TTL SECURITY TX ONLY { OSPF_PATT->ttl_security = 2; } | TTL SECURITY TX ONLY { OSPF_PATT->ttl_security = 2; }
| BFD bool { OSPF_PATT->bfd = $2; cf_check_bfd($2); } | BFD bool { OSPF_PATT->bfd = $2; cf_check_bfd($2); }
| SECONDARY bool { OSPF_PATT->bsd_secondary = $2; }
| password_list | password_list
; ;

37
proto/ospf/dbdes.c
View File

@ -103,7 +103,7 @@ ospf_dbdes_send(struct ospf_neighbor *n, int next)
length = sizeof(struct ospf_dbdes_packet); length = sizeof(struct ospf_dbdes_packet);
op->length = htons(length); op->length = htons(length);
OSPF_PACKET(ospf_dump_dbdes, pkt, "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->ifname);
ospf_send_to(ifa, n->ip); ospf_send_to(ifa, n->ip);
break; break;
@ -115,7 +115,14 @@ ospf_dbdes_send(struct ospf_neighbor *n, int next)
snode *sn; snode *sn;
struct ospf_lsa_header *lsa; struct ospf_lsa_header *lsa;
pkt = n->ldbdes; if (n->ldd_bsize != ifa->tx_length)
{
mb_free(n->ldd_buffer);
n->ldd_buffer = mb_allocz(n->pool, ifa->tx_length);
n->ldd_bsize = ifa->tx_length;
}
pkt = n->ldd_buffer;
op = (struct ospf_packet *) pkt; op = (struct ospf_packet *) pkt;
ospf_pkt_fill_hdr(ifa, pkt, DBDES_P); ospf_pkt_fill_hdr(ifa, pkt, DBDES_P);
@ -124,7 +131,7 @@ ospf_dbdes_send(struct ospf_neighbor *n, int next)
pkt->options = hton_opt(oa->options); pkt->options = hton_opt(oa->options);
j = i = (ospf_pkt_maxsize(ifa) - sizeof(struct ospf_dbdes_packet)) / sizeof(struct ospf_lsa_header); /* Number of possible lsaheaders to send */ j = i = (ospf_pkt_maxsize(ifa) - sizeof(struct ospf_dbdes_packet)) / sizeof(struct ospf_lsa_header); /* Number of possible lsaheaders to send */
lsa = (n->ldbdes + sizeof(struct ospf_dbdes_packet)); lsa = (n->ldd_buffer + sizeof(struct ospf_dbdes_packet));
if (n->myimms.bit.m) if (n->myimms.bit.m)
{ {
@ -175,7 +182,7 @@ ospf_dbdes_send(struct ospf_neighbor *n, int next)
case NEIGHBOR_LOADING: case NEIGHBOR_LOADING:
case NEIGHBOR_FULL: case NEIGHBOR_FULL:
length = ntohs(((struct ospf_packet *) n->ldbdes)->length); length = n->ldd_buffer ? ntohs(((struct ospf_packet *) n->ldd_buffer)->length) : 0;
if (!length) if (!length)
{ {
@ -184,12 +191,13 @@ ospf_dbdes_send(struct ospf_neighbor *n, int next)
return; return;
} }
/* Copy last sent packet again */ /* Send last packet from ldd buffer */
pkt = ospf_tx_buffer(ifa);
memcpy(pkt, n->ldbdes, length);
OSPF_PACKET(ospf_dump_dbdes, pkt, "DBDES packet sent to %I via %s", n->ip, ifa->iface->name); OSPF_PACKET(ospf_dump_dbdes, n->ldd_buffer, "DBDES packet sent to %I via %s", n->ip, ifa->ifname);
sk_set_tbuf(ifa->sk, n->ldd_buffer);
ospf_send_to(ifa, n->ip); ospf_send_to(ifa, n->ip);
sk_set_tbuf(ifa->sk, NULL);
if(n->myimms.bit.ms) tm_start(n->rxmt_timer, n->ifa->rxmtint); /* Restart timer */ if(n->myimms.bit.ms) tm_start(n->rxmt_timer, n->ifa->rxmtint); /* Restart timer */
@ -262,7 +270,7 @@ ospf_dbdes_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
u32 ps_options = ntoh_opt(ps->options); u32 ps_options = ntoh_opt(ps->options);
u16 ps_iface_mtu = ntohs(ps->iface_mtu); u16 ps_iface_mtu = ntohs(ps->iface_mtu);
OSPF_PACKET(ospf_dump_dbdes, ps, "DBDES packet received from %I via %s", n->ip, ifa->iface->name); OSPF_PACKET(ospf_dump_dbdes, ps, "DBDES packet received from %I via %s", n->ip, ifa->ifname);
ospf_neigh_sm(n, INM_HELLOREC); ospf_neigh_sm(n, INM_HELLOREC);
@ -279,10 +287,10 @@ ospf_dbdes_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
return; return;
case NEIGHBOR_EXSTART: case NEIGHBOR_EXSTART:
if ((ps_iface_mtu != ifa->iface->mtu) && (ifa->type != OSPF_IT_VLINK) if ((ifa->type != OSPF_IT_VLINK) && (ps_iface_mtu != ifa->iface->mtu)
&& (ps_iface_mtu != 0) && (ifa->iface->mtu != 0)) && (ps_iface_mtu != 0) && (ifa->iface->mtu != 0))
log(L_WARN "OSPF: MTU mismatch with neighbour %I on interface %s (remote %d, local %d)", log(L_WARN "OSPF: MTU mismatch with neighbour %I on interface %s (remote %d, local %d)",
n->ip, ifa->iface->name, ps_iface_mtu, ifa->iface->mtu); n->ip, ifa->ifname, ps_iface_mtu, ifa->iface->mtu);
if ((ps->imms.bit.m && ps->imms.bit.ms && ps->imms.bit.i) if ((ps->imms.bit.m && ps->imms.bit.ms && ps->imms.bit.i)
&& (n->rid > po->router_id) && (size == sizeof(struct ospf_dbdes_packet))) && (n->rid > po->router_id) && (size == sizeof(struct ospf_dbdes_packet)))
@ -361,8 +369,8 @@ ospf_dbdes_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
{ {
if (ps_ddseq != n->dds) /* MASTER */ if (ps_ddseq != n->dds) /* MASTER */
{ {
OSPF_TRACE(D_PACKETS, OSPF_TRACE(D_PACKETS, "dbdes - sequence mismatch neighbor %I (master)",
"dbdes - sequence mismatch neighbor %I (master)", n->ip); n->ip);
ospf_neigh_sm(n, INM_SEQMIS); ospf_neigh_sm(n, INM_SEQMIS);
break; break;
} }
@ -383,8 +391,7 @@ ospf_dbdes_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
{ {
if (ps_ddseq != (n->dds + 1)) /* SLAVE */ if (ps_ddseq != (n->dds + 1)) /* SLAVE */
{ {
OSPF_TRACE(D_PACKETS, "dbdes - sequence mismatch neighbor %I (slave)", OSPF_TRACE(D_PACKETS, "dbdes - sequence mismatch neighbor %I (slave)", n->ip);
n->ip);
ospf_neigh_sm(n, INM_SEQMIS); ospf_neigh_sm(n, INM_SEQMIS);
break; break;
} }

21
proto/ospf/hello.c
View File

@ -61,8 +61,7 @@ ospf_hello_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
struct ospf_hello_packet *ps = (void *) ps_i; struct ospf_hello_packet *ps = (void *) ps_i;
OSPF_TRACE(D_PACKETS, "HELLO packet received from %I via %s%s", faddr, OSPF_TRACE(D_PACKETS, "HELLO packet received from %I via %s", faddr, ifa->ifname);
(ifa->type == OSPF_IT_VLINK ? "vlink-" : ""), ifa->iface->name);
#ifdef OSPFv2 #ifdef OSPFv2
ip_addr mask = ps->netmask; ip_addr mask = ps->netmask;
@ -120,8 +119,7 @@ ospf_hello_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
if (!nn && ifa->strictnbma) if (!nn && ifa->strictnbma)
{ {
log(L_WARN "Ignoring new neighbor: %I on %s", faddr, log(L_WARN "Ignoring new neighbor: %I on %s", faddr, ifa->ifname);
ifa->iface->name);
return; return;
} }
@ -129,8 +127,7 @@ ospf_hello_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
(((ps->priority == 0) && nn->eligible) || (((ps->priority == 0) && nn->eligible) ||
((ps->priority > 0) && !nn->eligible))) ((ps->priority > 0) && !nn->eligible)))
{ {
log(L_ERR "Eligibility mismatch for neighbor: %I on %s", log(L_ERR "Eligibility mismatch for neighbor: %I on %s", faddr, ifa->ifname);
faddr, ifa->iface->name);
return; return;
} }
@ -138,8 +135,7 @@ ospf_hello_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
nn->found = 1; nn->found = 1;
} }
OSPF_TRACE(D_EVENTS, "New neighbor found: %I on %s", faddr, OSPF_TRACE(D_EVENTS, "New neighbor found: %I on %s", faddr, ifa->ifname);
ifa->iface->name);
n = ospf_neighbor_new(ifa); n = ospf_neighbor_new(ifa);
@ -263,7 +259,7 @@ ospf_hello_send(struct ospf_iface *ifa, int kind, struct ospf_neighbor *dirn)
p = (struct proto *) (ifa->oa->po); p = (struct proto *) (ifa->oa->po);
DBG("%s: Hello/Poll timer fired on interface %s with IP %I\n", DBG("%s: Hello/Poll timer fired on interface %s with IP %I\n",
p->name, ifa->iface->name, ifa->addr->ip); p->name, ifa->ifname, ifa->addr->ip);
/* Now we should send a hello packet */ /* Now we should send a hello packet */
pkt = ospf_tx_buffer(ifa); pkt = ospf_tx_buffer(ifa);
@ -309,9 +305,9 @@ ospf_hello_send(struct ospf_iface *ifa, int kind, struct ospf_neighbor *dirn)
u32 *pp = (u32 *) (((u8 *) pkt) + sizeof(struct ospf_hello_packet)); u32 *pp = (u32 *) (((u8 *) pkt) + sizeof(struct ospf_hello_packet));
WALK_LIST(neigh, ifa->neigh_list) WALK_LIST(neigh, ifa->neigh_list)
{ {
if ((i+1) * sizeof(u32) + sizeof(struct ospf_hello_packet) > ospf_pkt_bufsize(ifa)) if ((i+1) * sizeof(u32) + sizeof(struct ospf_hello_packet) > ospf_pkt_maxsize(ifa))
{ {
log(L_WARN "%s: Too many neighbors on interface %s", p->name, ifa->iface->name); log(L_WARN "%s: Too many neighbors on interface %s", p->name, ifa->ifname);
break; break;
} }
*(pp + i) = htonl(neigh->rid); *(pp + i) = htonl(neigh->rid);
@ -376,6 +372,5 @@ ospf_hello_send(struct ospf_iface *ifa, int kind, struct ospf_neighbor *dirn)
bug("Bug in ospf_hello_send()"); bug("Bug in ospf_hello_send()");
} }
OSPF_TRACE(D_PACKETS, "HELLO packet sent via %s%s", OSPF_TRACE(D_PACKETS, "HELLO packet sent via %s", ifa->ifname);
(ifa->type == OSPF_IT_VLINK ? "vlink-" : ""), ifa->iface->name);
} }

353
proto/ospf/iface.c
View File

@ -36,29 +36,46 @@ wait_timer_hook(timer * timer)
struct ospf_iface *ifa = (struct ospf_iface *) timer->data; struct ospf_iface *ifa = (struct ospf_iface *) timer->data;
struct proto *p = &ifa->oa->po->proto; struct proto *p = &ifa->oa->po->proto;
OSPF_TRACE(D_EVENTS, "Wait timer fired on interface %s.", ifa->iface->name); OSPF_TRACE(D_EVENTS, "Wait timer fired on interface %s.", ifa->ifname);
ospf_iface_sm(ifa, ISM_WAITF); ospf_iface_sm(ifa, ISM_WAITF);
} }
static void ospf_iface_change_mtu(struct proto_ospf *po, struct ospf_iface *ifa); static inline uint
ifa_tx_length(struct ospf_iface *ifa)
u32
rxbufsize(struct ospf_iface *ifa)
{ {
switch(ifa->rxbuf) return ifa->cf->tx_length ?: ifa->iface->mtu;
{
case OSPF_RXBUF_NORMAL:
return (ifa->iface->mtu * 2);
break;
case OSPF_RXBUF_LARGE:
return OSPF_MAX_PKT_SIZE;
break;
default:
return ifa->rxbuf;
break;
}
} }
static inline uint
ifa_bufsize(struct ospf_iface *ifa)
{
uint bsize = ifa->cf->rx_buffer ?: ifa->iface->mtu;
return MAX(bsize, ifa->tx_length);
}
int
ospf_iface_assure_bufsize(struct ospf_iface *ifa, uint plen)
{
plen += SIZE_OF_IP_HEADER;
#ifdef OSPFv2
if (ifa->autype == OSPF_AUTH_CRYPT)
plen += OSPF_AUTH_CRYPT_SIZE;
#endif
if (plen <= ifa->sk->tbsize)
return 0;
if (ifa->cf->rx_buffer || (plen > 0xffff))
return -1;
plen = BIRD_ALIGN(plen, 1024);
plen = MIN(plen, 0xffff);
sk_set_tbsize(ifa->sk, plen);
return 1;
}
struct nbma_node * struct nbma_node *
find_nbma_node_in(list *nnl, ip_addr ip) find_nbma_node_in(list *nnl, ip_addr ip)
{ {
@ -69,27 +86,27 @@ find_nbma_node_in(list *nnl, ip_addr ip)
return NULL; return NULL;
} }
static int static int
ospf_sk_open(struct ospf_iface *ifa) ospf_sk_open(struct ospf_iface *ifa)
{ {
sock *sk = sk_new(ifa->pool); sock *sk = sk_new(ifa->pool);
sk->type = SK_IP; sk->type = SK_IP;
sk->dport = OSPF_PROTO; sk->dport = OSPF_PROTO;
sk->saddr = IPA_NONE; sk->saddr = ifa->addr->ip;
sk->iface = ifa->iface;
sk->tos = ifa->cf->tx_tos; sk->tos = ifa->cf->tx_tos;
sk->priority = ifa->cf->tx_priority; sk->priority = ifa->cf->tx_priority;
sk->rx_hook = ospf_rx_hook; sk->rx_hook = ospf_rx_hook;
sk->tx_hook = ospf_tx_hook; // sk->tx_hook = ospf_tx_hook;
sk->err_hook = ospf_err_hook; sk->err_hook = ospf_err_hook;
sk->iface = ifa->iface; sk->rbsize = sk->tbsize = ifa_bufsize(ifa);
sk->rbsize = rxbufsize(ifa);
sk->tbsize = rxbufsize(ifa);
sk->data = (void *) ifa; sk->data = (void *) ifa;
sk->flags = SKF_LADDR_RX | (ifa->check_ttl ? SKF_TTL_RX : 0); sk->flags = SKF_LADDR_RX | (ifa->check_ttl ? SKF_TTL_RX : 0);
sk->ttl = ifa->cf->ttl_security ? 255 : -1; sk->ttl = ifa->cf->ttl_security ? 255 : 1;
if (sk_open(sk) != 0) if (sk_open(sk) < 0)
goto err; goto err;
#ifdef OSPFv3 #ifdef OSPFv3
@ -98,28 +115,6 @@ ospf_sk_open(struct ospf_iface *ifa)
goto err; goto err;
#endif #endif
/*
* For OSPFv2: When sending a packet, it is important to have a
* proper source address. We expect that when we send one-hop
* unicast packets, OS chooses a source address according to the
* destination address (to be in the same prefix). We also expect
* that when we send multicast packets, OS uses the source address
* from sk->saddr registered to OS by sk_setup_multicast(). This
* behavior is needed to implement multiple virtual ifaces (struct
* ospf_iface) on one physical iface and is signalized by
* CONFIG_MC_PROPER_SRC.
*
* If this behavior is not available (for example on BSD), we create
* non-stub iface just for the primary IP address (see
* ospf_iface_stubby()) and we expect OS to use primary IP address
* as a source address for both unicast and multicast packets.
*
* FIXME: the primary IP address is currently just the
* lexicographically smallest address on an interface, it should be
* signalized by sysdep code which one is really the primary.
*/
sk->saddr = ifa->addr->ip;
if ((ifa->type == OSPF_IT_BCAST) || (ifa->type == OSPF_IT_PTP)) if ((ifa->type == OSPF_IT_BCAST) || (ifa->type == OSPF_IT_PTP))
{ {
if (ifa->cf->real_bcast) if (ifa->cf->real_bcast)
@ -132,7 +127,6 @@ ospf_sk_open(struct ospf_iface *ifa)
else else
{ {
ifa->all_routers = AllSPFRouters; ifa->all_routers = AllSPFRouters;
sk->ttl = ifa->cf->ttl_security ? 255 : 1;
if (sk_setup_multicast(sk) < 0) if (sk_setup_multicast(sk) < 0)
goto err; goto err;
@ -171,6 +165,42 @@ ospf_sk_leave_dr(struct ospf_iface *ifa)
ifa->sk_dr = 0; ifa->sk_dr = 0;
} }
void
ospf_open_vlink_sk(struct proto_ospf *po)
{
struct proto *p = &po->proto;
sock *sk = sk_new(po->proto.pool);
sk->type = SK_IP;
sk->dport = OSPF_PROTO;
/* FIXME: configurable tos/priority ? */
sk->tos = IP_PREC_INTERNET_CONTROL;
sk->priority = sk_priority_control;
sk->err_hook = ospf_verr_hook;
sk->rbsize = 0;
sk->tbsize = OSPF_VLINK_MTU;
sk->data = (void *) po;
sk->flags = 0;
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(sk, 12) < 0)
goto err;
#endif
po->vlink_sk = sk;
return;
err:
rfree(sk);
log(L_ERR "%s: Cannot open virtual link socket", p->name);
}
static void static void
ospf_iface_down(struct ospf_iface *ifa) ospf_iface_down(struct ospf_iface *ifa)
{ {
@ -183,10 +213,10 @@ ospf_iface_down(struct ospf_iface *ifa)
{ {
#ifdef OSPFv2 #ifdef OSPFv2
OSPF_TRACE(D_EVENTS, "Removing interface %s (%I/%d) from area %R", OSPF_TRACE(D_EVENTS, "Removing interface %s (%I/%d) from area %R",
ifa->iface->name, ifa->addr->prefix, ifa->addr->pxlen, ifa->oa->areaid); ifa->ifname, ifa->addr->prefix, ifa->addr->pxlen, ifa->oa->areaid);
#else #else
OSPF_TRACE(D_EVENTS, "Removing interface %s (IID %d) from area %R", OSPF_TRACE(D_EVENTS, "Removing interface %s (IID %d) from area %R",
ifa->iface->name, ifa->instance_id, ifa->oa->areaid); ifa->ifname, ifa->instance_id, ifa->oa->areaid);
#endif #endif
/* First of all kill all the related vlinks */ /* First of all kill all the related vlinks */
@ -215,9 +245,7 @@ ospf_iface_down(struct ospf_iface *ifa)
if (ifa->type == OSPF_IT_VLINK) if (ifa->type == OSPF_IT_VLINK)
{ {
ifa->vifa = NULL; ifa->vifa = NULL;
ifa->iface = NULL;
ifa->addr = NULL; ifa->addr = NULL;
ifa->sk = NULL;
ifa->cost = 0; ifa->cost = 0;
ifa->vip = IPA_NONE; ifa->vip = IPA_NONE;
} }
@ -276,7 +304,7 @@ ospf_iface_chstate(struct ospf_iface *ifa, u8 state)
ifa->vid, ospf_is[oldstate], ospf_is[state]); ifa->vid, ospf_is[oldstate], ospf_is[state]);
else else
OSPF_TRACE(D_EVENTS, "Changing state of iface %s from %s to %s", OSPF_TRACE(D_EVENTS, "Changing state of iface %s from %s to %s",
ifa->iface->name, ospf_is[oldstate], ospf_is[state]); ifa->ifname, ospf_is[oldstate], ospf_is[state]);
if ((ifa->type == OSPF_IT_BCAST) && !ifa->cf->real_bcast && ifa->sk) if ((ifa->type == OSPF_IT_BCAST) && !ifa->cf->real_bcast && ifa->sk)
{ {
@ -318,8 +346,7 @@ ospf_iface_chstate(struct ospf_iface *ifa, u8 state)
void void
ospf_iface_sm(struct ospf_iface *ifa, int event) ospf_iface_sm(struct ospf_iface *ifa, int event)
{ {
DBG("SM on %s %s. Event is '%s'\n", (ifa->type == OSPF_IT_VLINK) ? "vlink" : "iface", DBG("SM on iface %s. Event is '%s'\n", ifa->ifname, ospf_ism[event]);
ifa->iface ? ifa->iface->name : "(none)" , ospf_ism[event]);
switch (event) switch (event)
{ {
@ -436,7 +463,7 @@ ospf_iface_add(struct object_lock *lock)
/* Open socket if interface is not stub */ /* Open socket if interface is not stub */
if (! ifa->stub && ! ospf_sk_open(ifa)) if (! ifa->stub && ! ospf_sk_open(ifa))
{ {
log(L_ERR "%s: Socket open failed on interface %s, declaring as stub", p->name, ifa->iface->name); log(L_ERR "%s: Socket open failed on interface %s, declaring as stub", p->name, ifa->ifname);
ifa->ioprob = OSPF_I_SK; ifa->ioprob = OSPF_I_SK;
ifa->stub = 1; ifa->stub = 1;
} }
@ -469,9 +496,6 @@ add_nbma_node(struct ospf_iface *ifa, struct nbma_node *src, int found)
static int static int
ospf_iface_stubby(struct ospf_iface_patt *ip, struct ifa *addr) ospf_iface_stubby(struct ospf_iface_patt *ip, struct ifa *addr)
{ {
if (! addr)
return 0;
/* a host address */ /* a host address */
if (addr->flags & IA_HOST) if (addr->flags & IA_HOST)
return 1; return 1;
@ -481,12 +505,11 @@ ospf_iface_stubby(struct ospf_iface_patt *ip, struct ifa *addr)
return 1; return 1;
/* /*
* We cannot properly support multiple OSPF ifaces on real iface * For compatibility reasons on BSD systems, we force OSPF
* with multiple prefixes, therefore we force OSPF ifaces with * interfaces with non-primary IP prefixes to be stub.
* non-primary IP prefixes to be stub.
*/ */
#if defined(OSPFv2) && !defined(CONFIG_MC_PROPER_SRC) #if defined(OSPFv2) && !defined(CONFIG_MC_PROPER_SRC)
if (! (addr->flags & IA_PRIMARY)) if (!ip->bsd_secondary && !(addr->flags & IA_PRIMARY))
return 1; return 1;
#endif #endif
@ -497,25 +520,17 @@ void
ospf_iface_new(struct ospf_area *oa, struct ifa *addr, struct ospf_iface_patt *ip) ospf_iface_new(struct ospf_area *oa, struct ifa *addr, struct ospf_iface_patt *ip)
{ {
struct proto *p = &oa->po->proto; struct proto *p = &oa->po->proto;
struct iface *iface = addr ? addr->iface : NULL; struct iface *iface = addr->iface;
struct ospf_iface *ifa;
struct pool *pool; struct pool *pool;
struct ospf_iface *ifa;
struct nbma_node *nb;
struct object_lock *lock;
if (ip->type == OSPF_IT_VLINK)
OSPF_TRACE(D_EVENTS, "Adding vlink to %R via area %R", ip->vid, ip->voa);
else
{
#ifdef OSPFv2 #ifdef OSPFv2
OSPF_TRACE(D_EVENTS, "Adding interface %s (%I/%d) to area %R", OSPF_TRACE(D_EVENTS, "Adding interface %s (%I/%d) to area %R",
iface->name, addr->prefix, addr->pxlen, oa->areaid); iface->name, addr->prefix, addr->pxlen, oa->areaid);
#else #else
OSPF_TRACE(D_EVENTS, "Adding interface %s (IID %d) to area %R", OSPF_TRACE(D_EVENTS, "Adding interface %s (IID %d) to area %R",
iface->name, ip->instance_id, oa->areaid); iface->name, ip->instance_id, oa->areaid);
#endif #endif
}
pool = rp_new(p->pool, "OSPF Interface"); pool = rp_new(p->pool, "OSPF Interface");
ifa = mb_allocz(pool, sizeof(struct ospf_iface)); ifa = mb_allocz(pool, sizeof(struct ospf_iface));
@ -525,6 +540,9 @@ ospf_iface_new(struct ospf_area *oa, struct ifa *addr, struct ospf_iface_patt *i
ifa->cf = ip; ifa->cf = ip;
ifa->pool = pool; ifa->pool = pool;
ifa->iface_id = iface->index;
ifa->ifname = iface->name;
ifa->cost = ip->cost; ifa->cost = ip->cost;
ifa->rxmtint = ip->rxmtint; ifa->rxmtint = ip->rxmtint;
ifa->inftransdelay = ip->inftransdelay; ifa->inftransdelay = ip->inftransdelay;
@ -536,7 +554,8 @@ ospf_iface_new(struct ospf_area *oa, struct ifa *addr, struct ospf_iface_patt *i
ifa->deadint = ip->deadint; ifa->deadint = ip->deadint;
ifa->stub = ospf_iface_stubby(ip, addr); ifa->stub = ospf_iface_stubby(ip, addr);
ifa->ioprob = OSPF_I_OK; ifa->ioprob = OSPF_I_OK;
ifa->rxbuf = ip->rxbuf;
ifa->tx_length = ifa_tx_length(ifa);
ifa->check_link = ip->check_link; ifa->check_link = ip->check_link;
ifa->ecmp_weight = ip->ecmp_weight; ifa->ecmp_weight = ip->ecmp_weight;
ifa->check_ttl = (ip->ttl_security == 1); ifa->check_ttl = (ip->ttl_security == 1);
@ -545,7 +564,7 @@ ospf_iface_new(struct ospf_area *oa, struct ifa *addr, struct ospf_iface_patt *i
#ifdef OSPFv2 #ifdef OSPFv2
ifa->autype = ip->autype; ifa->autype = ip->autype;
ifa->passwords = ip->passwords; ifa->passwords = ip->passwords;
ifa->ptp_netmask = addr ? !(addr->flags & IA_PEER) : 0; ifa->ptp_netmask = !(addr->flags & IA_PEER);
if (ip->ptp_netmask < 2) if (ip->ptp_netmask < 2)
ifa->ptp_netmask = ip->ptp_netmask; ifa->ptp_netmask = ip->ptp_netmask;
#endif #endif
@ -554,6 +573,7 @@ ospf_iface_new(struct ospf_area *oa, struct ifa *addr, struct ospf_iface_patt *i
ifa->instance_id = ip->instance_id; ifa->instance_id = ip->instance_id;
#endif #endif
ifa->type = ospf_iface_classify(ip->type, addr); ifa->type = ospf_iface_classify(ip->type, addr);
/* Check validity of interface type */ /* Check validity of interface type */
@ -578,12 +598,12 @@ ospf_iface_new(struct ospf_area *oa, struct ifa *addr, struct ospf_iface_patt *i
log(L_WARN "%s: Cannot use interface %s as %s, forcing %s", log(L_WARN "%s: Cannot use interface %s as %s, forcing %s",
p->name, iface->name, ospf_it[old_type], ospf_it[ifa->type]); p->name, iface->name, ospf_it[old_type], ospf_it[ifa->type]);
/* Assign iface ID, for vlinks, this is ugly hack */
ifa->iface_id = (ifa->type != OSPF_IT_VLINK) ? iface->index : oa->po->last_vlink_id++;
ifa->state = OSPF_IS_DOWN;
init_list(&ifa->neigh_list); init_list(&ifa->neigh_list);
init_list(&ifa->nbma_list); init_list(&ifa->nbma_list);
struct nbma_node *nb;
WALK_LIST(nb, ip->nbma_list) WALK_LIST(nb, ip->nbma_list)
{ {
/* In OSPFv3, addr is link-local while configured neighbors could /* In OSPFv3, addr is link-local while configured neighbors could
@ -602,19 +622,8 @@ ospf_iface_new(struct ospf_area *oa, struct ifa *addr, struct ospf_iface_patt *i
add_nbma_node(ifa, nb, 0); add_nbma_node(ifa, nb, 0);
} }
ifa->state = OSPF_IS_DOWN;
add_tail(&oa->po->iface_list, NODE ifa); add_tail(&oa->po->iface_list, NODE ifa);
if (ifa->type == OSPF_IT_VLINK)
{
ifa->voa = ospf_find_area(oa->po, ip->voa);
ifa->vid = ip->vid;
ifa->hello_timer = tm_new_set(ifa->pool, hello_timer_hook, ifa, 0, ifa->helloint);
return; /* Don't lock, don't add sockets */
}
/* /*
* In some cases we allow more ospf_ifaces on one physical iface. * In some cases we allow more ospf_ifaces on one physical iface.
* In OSPFv2, if they use different IP address prefix. * In OSPFv2, if they use different IP address prefix.
@ -622,7 +631,7 @@ ospf_iface_new(struct ospf_area *oa, struct ifa *addr, struct ospf_iface_patt *i
* Therefore, we store such info to lock->addr field. * Therefore, we store such info to lock->addr field.
*/ */
lock = olock_new(pool); struct object_lock *lock = olock_new(pool);
#ifdef OSPFv2 #ifdef OSPFv2
lock->addr = ifa->addr->prefix; lock->addr = ifa->addr->prefix;
#else /* OSPFv3 */ #else /* OSPFv3 */
@ -637,6 +646,63 @@ ospf_iface_new(struct ospf_area *oa, struct ifa *addr, struct ospf_iface_patt *i
olock_acquire(lock); olock_acquire(lock);
} }
void
ospf_iface_new_vlink(struct proto_ospf *po, struct ospf_iface_patt *ip)
{
struct proto *p = &po->proto;
struct ospf_iface *ifa;
struct pool *pool;
if (!po->vlink_sk)
return;
OSPF_TRACE(D_EVENTS, "Adding vlink to %R via area %R", ip->vid, ip->voa);
/* Vlink ifname is stored just after the ospf_iface structure */
pool = rp_new(p->pool, "OSPF Vlink");
ifa = mb_allocz(pool, sizeof(struct ospf_iface) + 16);
ifa->oa = po->backbone;
ifa->cf = ip;
ifa->pool = pool;
/* Assign iface ID, for vlinks, this is ugly hack */
u32 vlink_id = po->last_vlink_id++;
ifa->iface_id = vlink_id + OSPF_VLINK_ID_OFFSET;
ifa->ifname = (void *) (ifa + 1);
bsprintf(ifa->ifname, "vlink%d", vlink_id);
ifa->voa = ospf_find_area(po, ip->voa);
ifa->vid = ip->vid;
ifa->sk = po->vlink_sk;
ifa->helloint = ip->helloint;
ifa->rxmtint = ip->rxmtint;
ifa->waitint = ip->waitint;
ifa->deadint = ip->deadint;
ifa->inftransdelay = ip->inftransdelay;
ifa->tx_length = OSPF_VLINK_MTU;
#ifdef OSPFv2
ifa->autype = ip->autype;
ifa->passwords = ip->passwords;
#endif
#ifdef OSPFv3
ifa->instance_id = ip->instance_id;
#endif
ifa->type = OSPF_IT_VLINK;
ifa->state = OSPF_IS_DOWN;
init_list(&ifa->neigh_list);
init_list(&ifa->nbma_list);
add_tail(&po->iface_list, NODE ifa);
ifa->hello_timer = tm_new_set(ifa->pool, hello_timer_hook, ifa, 0, ifa->helloint);
}
static void static void
ospf_iface_change_timer(timer *tm, unsigned val) ospf_iface_change_timer(timer *tm, unsigned val)
{ {
@ -653,12 +719,12 @@ int
ospf_iface_reconfigure(struct ospf_iface *ifa, struct ospf_iface_patt *new) ospf_iface_reconfigure(struct ospf_iface *ifa, struct ospf_iface_patt *new)
{ {
struct proto *p = &ifa->oa->po->proto; struct proto *p = &ifa->oa->po->proto;
struct nbma_node *nb, *nbx; struct ospf_iface_patt *old = ifa->cf;
char *ifname = (ifa->type != OSPF_IT_VLINK) ? ifa->iface->name : "vlink"; char *ifname = ifa->ifname;
/* Type could be changed in ospf_iface_new(), /* Type could be changed in ospf_iface_new(),
but if config values are same then also results are same */ but if config values are same then also results are same */
int old_type = ospf_iface_classify(ifa->cf->type, ifa->addr); int old_type = ospf_iface_classify(old->type, ifa->addr);
int new_type = ospf_iface_classify(new->type, ifa->addr); int new_type = ospf_iface_classify(new->type, ifa->addr);
if (old_type != new_type) if (old_type != new_type)
return 0; return 0;
@ -668,10 +734,10 @@ ospf_iface_reconfigure(struct ospf_iface *ifa, struct ospf_iface_patt *new)
return 0; return 0;
/* Change of these options would require to reset the iface socket */ /* Change of these options would require to reset the iface socket */
if ((new->real_bcast != ifa->cf->real_bcast) || if ((new->real_bcast != old->real_bcast) ||
(new->tx_tos != ifa->cf->tx_tos) || (new->tx_tos != old->tx_tos) ||
(new->tx_priority != ifa->cf->tx_priority) || (new->tx_priority != old->tx_priority) ||
(new->ttl_security != ifa->cf->ttl_security)) (new->ttl_security != old->ttl_security))
return 0; return 0;
ifa->cf = new; ifa->cf = new;
@ -775,6 +841,8 @@ ospf_iface_reconfigure(struct ospf_iface *ifa, struct ospf_iface_patt *new)
ifa->strictnbma = new->strictnbma; ifa->strictnbma = new->strictnbma;
} }
struct nbma_node *nb, *nbx;
/* NBMA LIST - remove or update old */ /* NBMA LIST - remove or update old */
WALK_LIST_DELSAFE(nb, nbx, ifa->nbma_list) WALK_LIST_DELSAFE(nb, nbx, ifa->nbma_list)
{ {
@ -817,13 +885,35 @@ ospf_iface_reconfigure(struct ospf_iface *ifa, struct ospf_iface_patt *new)
} }
} }
/* RX BUFF */ int update_buffers = 0;
if (ifa->rxbuf != new->rxbuf)
/* TX LENGTH */
if (old->tx_length != new->tx_length)
{ {
OSPF_TRACE(D_EVENTS, "Changing rxbuf interface %s from %d to %d", OSPF_TRACE(D_EVENTS, "Changing TX length on interface %s from %d to %d",
ifname, ifa->rxbuf, new->rxbuf); ifname, old->tx_length, new->tx_length);
ifa->rxbuf = new->rxbuf;
ospf_iface_change_mtu(ifa->oa->po, ifa); /* ifa cannot be vlink */
ifa->tx_length = ifa_tx_length(ifa);
update_buffers = 1;
}
/* RX BUFFER */
if (old->rx_buffer != new->rx_buffer)
{
OSPF_TRACE(D_EVENTS, "Changing buffer size on interface %s from %d to %d",
ifname, old->rx_buffer, new->rx_buffer);
/* ifa cannot be vlink */
update_buffers = 1;
}
/* Buffer size depends on both tx_length and rx_buffer options */
if (update_buffers && ifa->sk)
{
uint bsize = ifa_bufsize(ifa);
sk_set_rbsize(ifa->sk, bsize);
sk_set_tbsize(ifa->sk, bsize);
} }
/* LINK */ /* LINK */
@ -833,6 +923,7 @@ ospf_iface_reconfigure(struct ospf_iface *ifa, struct ospf_iface_patt *new)
new->check_link ? "Enabling" : "Disabling", ifname); new->check_link ? "Enabling" : "Disabling", ifname);
ifa->check_link = new->check_link; ifa->check_link = new->check_link;
/* ifa cannot be vlink */
if (!(ifa->iface->flags & IF_LINK_UP)) if (!(ifa->iface->flags & IF_LINK_UP))
ospf_iface_sm(ifa, ifa->check_link ? ISM_LOOP : ISM_UNLOOP); ospf_iface_sm(ifa, ifa->check_link ? ISM_LOOP : ISM_UNLOOP);
} }
@ -929,6 +1020,7 @@ ospf_iface_find_by_key(struct ospf_area *oa, struct ifa *a)
void void
ospf_ifaces_reconfigure(struct ospf_area *oa, struct ospf_area_config *nac) ospf_ifaces_reconfigure(struct ospf_area *oa, struct ospf_area_config *nac)
{ {
struct proto *p = &oa->po->proto;
struct ospf_iface_patt *ip; struct ospf_iface_patt *ip;
struct iface *iface; struct iface *iface;
struct ifa *a; struct ifa *a;
@ -956,6 +1048,8 @@ ospf_ifaces_reconfigure(struct ospf_area *oa, struct ospf_area_config *nac)
continue; continue;
/* Hard restart */ /* Hard restart */
log(L_INFO "%s: Restarting interface %s (%I/%d) in area %R",
p->name, ifa->ifname, a->prefix, a->pxlen, oa->areaid);
ospf_iface_shutdown(ifa); ospf_iface_shutdown(ifa);
ospf_iface_remove(ifa); ospf_iface_remove(ifa);
} }
@ -1062,6 +1156,7 @@ ospf_iface_find_by_key(struct ospf_area *oa, struct ifa *a, int iid)
void void
ospf_ifaces_reconfigure(struct ospf_area *oa, struct ospf_area_config *nac) ospf_ifaces_reconfigure(struct ospf_area *oa, struct ospf_area_config *nac)
{ {
struct proto *p = &oa->po->proto;
struct ospf_iface_patt *ip; struct ospf_iface_patt *ip;
struct iface *iface; struct iface *iface;
struct ifa *a; struct ifa *a;
@ -1092,6 +1187,8 @@ ospf_ifaces_reconfigure(struct ospf_area *oa, struct ospf_area_config *nac)
continue; continue;
/* Hard restart */ /* Hard restart */
log(L_INFO "%s: Restarting interface %s (IID %d) in area %R",
p->name, ifa->ifname, ifa->instance_id, oa->areaid);
ospf_iface_shutdown(ifa); ospf_iface_shutdown(ifa);
ospf_iface_remove(ifa); ospf_iface_remove(ifa);
} }
@ -1108,32 +1205,29 @@ static void
ospf_iface_change_mtu(struct proto_ospf *po, struct ospf_iface *ifa) ospf_iface_change_mtu(struct proto_ospf *po, struct ospf_iface *ifa)
{ {
struct proto *p = &po->proto; struct proto *p = &po->proto;
struct ospf_packet *op;
struct ospf_neighbor *n;
OSPF_TRACE(D_EVENTS, "Changing MTU on interface %s", ifa->iface->name);
if (ifa->sk) /* ifa is not vlink */
{
ifa->sk->rbsize = rxbufsize(ifa);
ifa->sk->tbsize = rxbufsize(ifa);
sk_reallocate(ifa->sk);
}
WALK_LIST(n, ifa->neigh_list) OSPF_TRACE(D_EVENTS, "Changing MTU on interface %s", ifa->ifname);
{
op = (struct ospf_packet *) n->ldbdes;
n->ldbdes = mb_allocz(n->pool, ifa->iface->mtu);
if (ntohs(op->length) <= ifa->iface->mtu) /* If the packet in old buffer is bigger, let it filled by zeros */ ifa->tx_length = ifa_tx_length(ifa);
memcpy(n->ldbdes, op, ifa->iface->mtu); /* If the packet is old is same or smaller, copy it */
mb_free(op); if (!ifa->sk)
} return;
/* We do not shrink dynamic buffers */
uint bsize = ifa_bufsize(ifa);
if (bsize > ifa->sk->rbsize)
sk_set_rbsize(ifa->sk, bsize);
if (bsize > ifa->sk->tbsize)
sk_set_tbsize(ifa->sk, bsize);
} }
static void static void
ospf_iface_notify(struct proto_ospf *po, unsigned flags, struct ospf_iface *ifa) ospf_iface_notify(struct proto_ospf *po, unsigned flags, struct ospf_iface *ifa)
{ {
/* ifa is not vlink */
if (flags & IF_CHANGE_DOWN) if (flags & IF_CHANGE_DOWN)
{ {
ospf_iface_remove(ifa); ospf_iface_remove(ifa);
@ -1163,7 +1257,7 @@ ospf_if_notify(struct proto *p, unsigned flags, struct iface *iface)
struct ospf_iface *ifa, *ifx; struct ospf_iface *ifa, *ifx;
WALK_LIST_DELSAFE(ifa, ifx, po->iface_list) WALK_LIST_DELSAFE(ifa, ifx, po->iface_list)
if ((ifa->type != OSPF_IT_VLINK) && (ifa->iface == iface)) if (ifa->iface == iface)
ospf_iface_notify(po, flags, ifa); ospf_iface_notify(po, flags, ifa);
/* We use here that even shutting down iface also shuts down /* We use here that even shutting down iface also shuts down
@ -1186,22 +1280,19 @@ ospf_iface_info(struct ospf_iface *ifa)
if (ifa->type == OSPF_IT_VLINK) if (ifa->type == OSPF_IT_VLINK)
{ {
cli_msg(-1015, "Virtual link to %R:", ifa->vid); cli_msg(-1015, "Virtual link %s to %R:", ifa->ifname, ifa->vid);
cli_msg(-1015, "\tPeer IP: %I", ifa->vip); cli_msg(-1015, "\tPeer IP: %I", ifa->vip);
cli_msg(-1015, "\tTransit area: %R (%u)", ifa->voa->areaid, cli_msg(-1015, "\tTransit area: %R (%u)", ifa->voa->areaid, ifa->voa->areaid);
ifa->voa->areaid);
cli_msg(-1015, "\tInterface: \"%s\"",
(ifa->iface ? ifa->iface->name : "(none)"));
} }
else else
{ {
#ifdef OSPFv2 #ifdef OSPFv2
if (ifa->addr->flags & IA_PEER) if (ifa->addr->flags & IA_PEER)
cli_msg(-1015, "Interface %s (peer %I)", ifa->iface->name, ifa->addr->opposite); cli_msg(-1015, "Interface %s (peer %I)", ifa->ifname, ifa->addr->opposite);
else else
cli_msg(-1015, "Interface %s (%I/%d)", ifa->iface->name, ifa->addr->prefix, ifa->addr->pxlen); cli_msg(-1015, "Interface %s (%I/%d)", ifa->ifname, ifa->addr->prefix, ifa->addr->pxlen);
#else /* OSPFv3 */ #else /* OSPFv3 */
cli_msg(-1015, "Interface %s (IID %d)", ifa->iface->name, ifa->instance_id); cli_msg(-1015, "Interface %s (IID %d)", ifa->ifname, ifa->instance_id);
#endif #endif
cli_msg(-1015, "\tType: %s%s", ospf_it[ifa->type], more); cli_msg(-1015, "\tType: %s%s", ospf_it[ifa->type], more);
cli_msg(-1015, "\tArea: %R (%u)", ifa->oa->areaid, ifa->oa->areaid); cli_msg(-1015, "\tArea: %R (%u)", ifa->oa->areaid, ifa->oa->areaid);

5
proto/ospf/iface.h
View File

@ -17,11 +17,16 @@ 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_ifa_notify(struct proto *p, unsigned flags, struct ifa *a);
void ospf_iface_info(struct ospf_iface *ifa); void ospf_iface_info(struct ospf_iface *ifa);
void ospf_iface_new(struct ospf_area *oa, struct ifa *addr, struct ospf_iface_patt *ip); void ospf_iface_new(struct ospf_area *oa, struct ifa *addr, struct ospf_iface_patt *ip);
void ospf_iface_new_vlink(struct proto_ospf *po, struct ospf_iface_patt *ip);
void ospf_iface_remove(struct ospf_iface *ifa); void ospf_iface_remove(struct ospf_iface *ifa);
void ospf_iface_shutdown(struct ospf_iface *ifa); void ospf_iface_shutdown(struct ospf_iface *ifa);
int ospf_iface_reconfigure(struct ospf_iface *ifa, struct ospf_iface_patt *new); int ospf_iface_reconfigure(struct ospf_iface *ifa, struct ospf_iface_patt *new);
void ospf_ifaces_reconfigure(struct ospf_area *oa, struct ospf_area_config *nac); void ospf_ifaces_reconfigure(struct ospf_area *oa, struct ospf_area_config *nac);
int ospf_iface_assure_bufsize(struct ospf_iface *ifa, uint plen);
void ospf_open_vlink_sk(struct proto_ospf *po);
struct nbma_node *find_nbma_node_in(list *nnl, ip_addr ip); struct nbma_node *find_nbma_node_in(list *nnl, ip_addr ip);
static inline struct nbma_node * static inline struct nbma_node *

6
proto/ospf/lsack.c
View File

@ -92,7 +92,7 @@ ospf_lsack_send(struct ospf_neighbor *n, int queue)
op->length = htons(len); op->length = htons(len);
DBG("Sending and continuing! Len=%u\n", len); DBG("Sending and continuing! Len=%u\n", len);
OSPF_PACKET(ospf_dump_lsack, pk, "LSACK packet sent via %s", ifa->iface->name); OSPF_PACKET(ospf_dump_lsack, pk, "LSACK packet sent via %s", ifa->ifname);
if (ifa->type == OSPF_IT_BCAST) if (ifa->type == OSPF_IT_BCAST)
{ {
@ -121,7 +121,7 @@ ospf_lsack_send(struct ospf_neighbor *n, int queue)
op->length = htons(len); op->length = htons(len);
DBG("Sending! Len=%u\n", len); DBG("Sending! Len=%u\n", len);
OSPF_PACKET(ospf_dump_lsack, pk, "LSACK packet sent via %s", ifa->iface->name); OSPF_PACKET(ospf_dump_lsack, pk, "LSACK packet sent via %s", ifa->ifname);
if (ifa->type == OSPF_IT_BCAST) if (ifa->type == OSPF_IT_BCAST)
{ {
@ -153,7 +153,7 @@ ospf_lsack_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
} }
struct ospf_lsack_packet *ps = (void *) ps_i; struct ospf_lsack_packet *ps = (void *) ps_i;
OSPF_PACKET(ospf_dump_lsack, ps, "LSACK packet received from %I via %s", n->ip, ifa->iface->name); OSPF_PACKET(ospf_dump_lsack, ps, "LSACK packet received from %I via %s", n->ip, ifa->ifname);
ospf_neigh_sm(n, INM_HELLOREC); ospf_neigh_sm(n, INM_HELLOREC);

4
proto/ospf/lsreq.c
View File

@ -82,7 +82,7 @@ ospf_lsreq_send(struct ospf_neighbor *n)
i) * sizeof(struct ospf_lsreq_header); i) * sizeof(struct ospf_lsreq_header);
op->length = htons(length); op->length = htons(length);
OSPF_PACKET(ospf_dump_lsreq, pk, "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->ifname);
ospf_send_to(n->ifa, n->ip); ospf_send_to(n->ifa, n->ip);
} }
@ -107,7 +107,7 @@ ospf_lsreq_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
} }
struct ospf_lsreq_packet *ps = (void *) ps_i; struct ospf_lsreq_packet *ps = (void *) ps_i;
OSPF_PACKET(ospf_dump_lsreq, ps, "LSREQ packet received from %I via %s", n->ip, ifa->iface->name); OSPF_PACKET(ospf_dump_lsreq, ps, "LSREQ packet received from %I via %s", n->ip, ifa->ifname);
if (n->state < NEIGHBOR_EXCHANGE) if (n->state < NEIGHBOR_EXCHANGE)
return; return;

32
proto/ospf/lsupd.c
View File

@ -278,22 +278,22 @@ ospf_lsupd_flood(struct proto_ospf *po,
struct ospf_packet *op; struct ospf_packet *op;
struct ospf_lsa_header *lh; struct ospf_lsa_header *lh;
/* Check iface buffer size */
uint len2 = sizeof(struct ospf_lsupd_packet) + (hn ? ntohs(hn->length) : hh->length);
if (ospf_iface_assure_bufsize(ifa, len2) < 0)
{
/* Cannot fit in a tx buffer, skip that iface */
log(L_ERR "OSPF: LSA too large to flood on %s (Type: %04x, Id: %R, Rt: %R)",
ifa->ifname, hh->type, hh->id, hh->rt);
continue;
}
pk = ospf_tx_buffer(ifa); pk = ospf_tx_buffer(ifa);
op = &pk->ospf_packet; op = &pk->ospf_packet;
ospf_pkt_fill_hdr(ifa, pk, LSUPD_P); ospf_pkt_fill_hdr(ifa, pk, LSUPD_P);
pk->lsano = htonl(1); pk->lsano = htonl(1);
/* Check iface buffer size */
int len2 = sizeof(struct ospf_lsupd_packet) + (hn ? ntohs(hn->length) : hh->length);
if (len2 > ospf_pkt_bufsize(ifa))
{
/* Cannot fit in a tx buffer, skip that iface */
log(L_ERR "OSPF: LSA too large to flood on %s (Type: %04x, Id: %R, Rt: %R)",
ifa->iface->name, hh->type, hh->id, hh->rt);
continue;
}
lh = (struct ospf_lsa_header *) (pk + 1); lh = (struct ospf_lsa_header *) (pk + 1);
/* Copy LSA into the packet */ /* Copy LSA into the packet */
@ -322,7 +322,7 @@ ospf_lsupd_flood(struct proto_ospf *po,
op->length = htons(len); op->length = htons(len);
OSPF_PACKET(ospf_dump_lsupd, pk, "LSUPD packet flooded via %s", ifa->iface->name); OSPF_PACKET(ospf_dump_lsupd, pk, "LSUPD packet flooded via %s", ifa->ifname);
switch (ifa->type) switch (ifa->type)
{ {
@ -406,7 +406,7 @@ ospf_lsupd_send_list(struct ospf_neighbor *n, list * l)
break; break;
/* LSA is larger than MTU, check buffer size */ /* LSA is larger than MTU, check buffer size */
if (len2 > ospf_pkt_bufsize(n->ifa)) if (ospf_iface_assure_bufsize(n->ifa, len2) < 0)
{ {
/* Cannot fit in a tx buffer, skip that */ /* Cannot fit in a tx buffer, skip that */
log(L_ERR "OSPF: LSA too large to send (Type: %04x, Id: %R, Rt: %R)", log(L_ERR "OSPF: LSA too large to send (Type: %04x, Id: %R, Rt: %R)",
@ -414,6 +414,10 @@ ospf_lsupd_send_list(struct ospf_neighbor *n, list * l)
lsr = NODE_NEXT(lsr); lsr = NODE_NEXT(lsr);
continue; continue;
} }
/* TX buffer could be reallocated */
pkt = ospf_tx_buffer(n->ifa);
buf = (void *) pkt;
} }
/* Copy the LSA to the packet */ /* Copy the LSA to the packet */
@ -432,7 +436,7 @@ ospf_lsupd_send_list(struct ospf_neighbor *n, list * l)
pkt->lsano = htonl(lsano); pkt->lsano = htonl(lsano);
pkt->ospf_packet.length = htons(len); pkt->ospf_packet.length = htons(len);
OSPF_PACKET(ospf_dump_lsupd, pkt, "LSUPD packet sent to %I via %s", OSPF_PACKET(ospf_dump_lsupd, pkt, "LSUPD packet sent to %I via %s",
n->ip, n->ifa->iface->name); n->ip, n->ifa->ifname);
ospf_send_to(n->ifa, n->ip); ospf_send_to(n->ifa, n->ip);
} }
} }
@ -455,7 +459,7 @@ ospf_lsupd_receive(struct ospf_packet *ps_i, struct ospf_iface *ifa,
} }
struct ospf_lsupd_packet *ps = (void *) ps_i; struct ospf_lsupd_packet *ps = (void *) ps_i;
OSPF_PACKET(ospf_dump_lsupd, ps, "LSUPD packet received from %I via %s", n->ip, ifa->iface->name); OSPF_PACKET(ospf_dump_lsupd, ps, "LSUPD packet received from %I via %s", n->ip, ifa->ifname);
if (n->state < NEIGHBOR_EXCHANGE) if (n->state < NEIGHBOR_EXCHANGE)
{ {

23
proto/ospf/neighbor.c
View File

@ -69,7 +69,6 @@ ospf_neighbor_new(struct ospf_iface *ifa)
add_tail(&ifa->neigh_list, NODE n); add_tail(&ifa->neigh_list, NODE n);
n->adj = 0; n->adj = 0;
n->csn = 0; n->csn = 0;
n->ldbdes = mb_allocz(pool, ifa->iface->mtu);
n->state = NEIGHBOR_DOWN; n->state = NEIGHBOR_DOWN;
init_lists(n); init_lists(n);
@ -286,10 +285,10 @@ can_do_adj(struct ospf_neighbor *n)
{ {
case OSPF_IS_DOWN: case OSPF_IS_DOWN:
case OSPF_IS_LOOP: case OSPF_IS_LOOP:
bug("%s: Iface %s in down state?", p->name, ifa->iface->name); bug("%s: Iface %s in down state?", p->name, ifa->ifname);
break; break;
case OSPF_IS_WAITING: case OSPF_IS_WAITING:
DBG("%s: Neighbor? on iface %s\n", p->name, ifa->iface->name); DBG("%s: Neighbor? on iface %s\n", p->name, ifa->ifname);
break; break;
case OSPF_IS_DROTHER: case OSPF_IS_DROTHER:
if (((n->rid == ifa->drid) || (n->rid == ifa->bdrid)) if (((n->rid == ifa->drid) || (n->rid == ifa->bdrid))
@ -303,15 +302,15 @@ can_do_adj(struct ospf_neighbor *n)
i = 1; i = 1;
break; break;
default: default:
bug("%s: Iface %s in unknown state?", p->name, ifa->iface->name); bug("%s: Iface %s in unknown state?", p->name, ifa->ifname);
break; break;
} }
break; break;
default: default:
bug("%s: Iface %s is unknown type?", p->name, ifa->iface->name); bug("%s: Iface %s is unknown type?", p->name, ifa->ifname);
break; break;
} }
DBG("%s: Iface %s can_do_adj=%d\n", p->name, ifa->iface->name, i); DBG("%s: Iface %s can_do_adj=%d\n", p->name, ifa->ifname, i);
return i; return i;
} }
@ -556,9 +555,8 @@ neighbor_timer_hook(timer * timer)
struct ospf_iface *ifa = n->ifa; struct ospf_iface *ifa = n->ifa;
struct proto *p = &ifa->oa->po->proto; struct proto *p = &ifa->oa->po->proto;
OSPF_TRACE(D_EVENTS, OSPF_TRACE(D_EVENTS, "Inactivity timer fired on interface %s for neighbor %I.",
"Inactivity timer fired on interface %s for neighbor %I.", ifa->ifname, n->ip);
ifa->iface->name, n->ip);
ospf_neigh_remove(n); ospf_neigh_remove(n);
} }
@ -591,7 +589,7 @@ ospf_neigh_bfd_hook(struct bfd_request *req)
if (req->down) if (req->down)
{ {
OSPF_TRACE(D_EVENTS, "BFD session down for %I on %s", OSPF_TRACE(D_EVENTS, "BFD session down for %I on %s",
n->ip, n->ifa->iface->name); n->ip, n->ifa->ifname);
ospf_neigh_remove(n); ospf_neigh_remove(n);
} }
@ -641,8 +639,7 @@ ospf_sh_neigh_info(struct ospf_neighbor *n)
pos = "ptp "; pos = "ptp ";
cli_msg(-1013, "%-1R\t%3u\t%s/%s\t%-5s\t%-10s %-1I", n->rid, n->priority, cli_msg(-1013, "%-1R\t%3u\t%s/%s\t%-5s\t%-10s %-1I", n->rid, n->priority,
ospf_ns[n->state], pos, etime, ospf_ns[n->state], pos, etime, ifa->ifname, n->ip);
(ifa->type == OSPF_IT_VLINK ? "vlink" : ifa->iface->name), n->ip);
} }
static void static void
@ -653,7 +650,7 @@ rxmt_timer_hook(timer * timer)
struct top_hash_entry *en; struct top_hash_entry *en;
DBG("%s: RXMT timer fired on interface %s for neigh: %I.\n", DBG("%s: RXMT timer fired on interface %s for neigh: %I.\n",
p->name, n->ifa->iface->name, n->ip); p->name, n->ifa->ifname, n->ip);
if(n->state < NEIGHBOR_EXSTART) return; if(n->state < NEIGHBOR_EXSTART) return;

20
proto/ospf/ospf.c
View File

@ -232,7 +232,6 @@ ospf_start(struct proto *p)
struct ospf_area_config *ac; struct ospf_area_config *ac;
po->router_id = proto_get_router_id(p->cf); po->router_id = proto_get_router_id(p->cf);
po->last_vlink_id = 0x80000000;
po->rfc1583 = c->rfc1583; po->rfc1583 = c->rfc1583;
po->stub_router = c->stub_router; po->stub_router = c->stub_router;
po->ebit = 0; po->ebit = 0;
@ -258,10 +257,13 @@ ospf_start(struct proto *p)
WALK_LIST(ac, c->area_list) WALK_LIST(ac, c->area_list)
ospf_area_add(po, ac, 0); ospf_area_add(po, ac, 0);
if (c->abr)
ospf_open_vlink_sk(po);
/* Add all virtual links */ /* Add all virtual links */
struct ospf_iface_patt *ic; struct ospf_iface_patt *ic;
WALK_LIST(ic, c->vlink_list) WALK_LIST(ic, c->vlink_list)
ospf_iface_new(po->backbone, NULL, ic); ospf_iface_new_vlink(po, ic);
return PS_UP; return PS_UP;
} }
@ -277,7 +279,7 @@ ospf_dump(struct proto *p)
WALK_LIST(ifa, po->iface_list) WALK_LIST(ifa, po->iface_list)
{ {
OSPF_TRACE(D_EVENTS, "Interface: %s", (ifa->iface ? ifa->iface->name : "(null)")); OSPF_TRACE(D_EVENTS, "Interface: %s", ifa->ifname);
OSPF_TRACE(D_EVENTS, "state: %u", ifa->state); OSPF_TRACE(D_EVENTS, "state: %u", ifa->state);
OSPF_TRACE(D_EVENTS, "DR: %R", ifa->drid); OSPF_TRACE(D_EVENTS, "DR: %R", ifa->drid);
OSPF_TRACE(D_EVENTS, "BDR: %R", ifa->bdrid); OSPF_TRACE(D_EVENTS, "BDR: %R", ifa->bdrid);
@ -381,7 +383,7 @@ schedule_net_lsa(struct ospf_iface *ifa)
{ {
struct proto *p = &ifa->oa->po->proto; struct proto *p = &ifa->oa->po->proto;
OSPF_TRACE(D_EVENTS, "Scheduling network-LSA origination for iface %s", ifa->iface->name); OSPF_TRACE(D_EVENTS, "Scheduling network-LSA origination for iface %s", ifa->ifname);
ifa->orignet = 1; ifa->orignet = 1;
} }
@ -391,7 +393,7 @@ schedule_link_lsa(struct ospf_iface *ifa)
{ {
struct proto *p = &ifa->oa->po->proto; struct proto *p = &ifa->oa->po->proto;
OSPF_TRACE(D_EVENTS, "Scheduling link-LSA origination for iface %s", ifa->iface->name); OSPF_TRACE(D_EVENTS, "Scheduling link-LSA origination for iface %s", ifa->ifname);
ifa->origlink = 1; ifa->origlink = 1;
} }
#endif #endif
@ -631,7 +633,7 @@ ospf_get_route_info(rte * rte, byte * buf, ea_list * attrs UNUSED)
{ {
char *type = "<bug>"; char *type = "<bug>";
switch(rte->attrs->source) switch (rte->attrs->source)
{ {
case RTS_OSPF: case RTS_OSPF:
type = "I"; type = "I";
@ -769,7 +771,7 @@ ospf_reconfigure(struct proto *p, struct proto_config *c)
if (ifa) if (ifa)
ospf_iface_reconfigure(ifa, ip); ospf_iface_reconfigure(ifa, ip);
else else
ospf_iface_new(po->backbone, NULL, ip); ospf_iface_new_vlink(po, ip);
} }
/* Delete remaining ifaces and areas */ /* Delete remaining ifaces and areas */
@ -808,7 +810,7 @@ ospf_sh_neigh(struct proto *p, char *iff)
cli_msg(-1013, "%-12s\t%3s\t%-15s\t%-5s\t%-10s %-12s", "Router ID", "Pri", cli_msg(-1013, "%-12s\t%3s\t%-15s\t%-5s\t%-10s %-12s", "Router ID", "Pri",
" State", "DTime", "Interface", "Router IP"); " State", "DTime", "Interface", "Router IP");
WALK_LIST(ifa, po->iface_list) WALK_LIST(ifa, po->iface_list)
if ((iff == NULL) || patmatch(iff, ifa->iface->name)) if ((iff == NULL) || patmatch(iff, ifa->ifname))
WALK_LIST(n, ifa->neigh_list) WALK_LIST(n, ifa->neigh_list)
ospf_sh_neigh_info(n); ospf_sh_neigh_info(n);
cli_msg(0, ""); cli_msg(0, "");
@ -917,7 +919,7 @@ ospf_sh_iface(struct proto *p, char *iff)
cli_msg(-1015, "%s:", p->name); cli_msg(-1015, "%s:", p->name);
WALK_LIST(ifa, po->iface_list) WALK_LIST(ifa, po->iface_list)
if ((iff == NULL) || patmatch(iff, ifa->iface->name)) if ((iff == NULL) || patmatch(iff, ifa->ifname))
ospf_iface_info(ifa); ospf_iface_info(ifa);
cli_msg(0, ""); cli_msg(0, "");
} }

28
proto/ospf/ospf.h
View File

@ -10,14 +10,8 @@
#define _BIRD_OSPF_H_ #define _BIRD_OSPF_H_
#define MAXNETS 10 #define MAXNETS 10
#define OSPF_MIN_PKT_SIZE 256
#define OSPF_MAX_PKT_SIZE 65535 #define OSPF_MAX_PKT_SIZE 65535
/*
* RFC 2328 says, maximum packet size is 65535 (IP packet size
* limit). Really a bit less for OSPF, because this contains also IP
* header. This could be too much for small systems, so I normally
* allocate 2*mtu (i found one cisco sending packets mtu+16). OSPF
* packets are almost always sent small enough to not be fragmented.
*/
#ifdef LOCAL_DEBUG #ifdef LOCAL_DEBUG
#define OSPF_FORCE_DEBUG 1 #define OSPF_FORCE_DEBUG 1
@ -78,6 +72,8 @@ do { if ((p->debug & D_PACKETS) || OSPF_FORCE_DEBUG) \
#define DEFAULT_ECMP_LIMIT 16 #define DEFAULT_ECMP_LIMIT 16
#define DEFAULT_TRANSINT 40 #define DEFAULT_TRANSINT 40
#define OSPF_VLINK_ID_OFFSET 0x80000000
struct ospf_config struct ospf_config
{ {
@ -179,12 +175,14 @@ struct ospf_area_config
struct ospf_iface struct ospf_iface
{ {
node n; node n;
struct iface *iface; /* Nest's iface, non-NULL (unless type OSPF_IT_VLINK) */ struct iface *iface; /* Nest's iface (NULL for vlinks) */
struct ifa *addr; /* IP prefix associated with that OSPF iface */ struct ifa *addr; /* IP prefix associated with that OSPF iface */
struct ospf_area *oa; struct ospf_area *oa;
struct ospf_iface_patt *cf; struct ospf_iface_patt *cf;
char *ifname; /* Interface name (iface->name), new one for vlinks */
pool *pool; pool *pool;
sock *sk; /* IP socket (for DD ...) */ sock *sk; /* IP socket */
list neigh_list; /* List of neigbours */ list neigh_list; /* List of neigbours */
u32 cost; /* Cost of iface */ u32 cost; /* Cost of iface */
u32 waitint; /* number of sec before changing state from wait */ u32 waitint; /* number of sec before changing state from wait */
@ -273,6 +271,7 @@ struct ospf_iface
u8 sk_dr; /* Socket is a member of DRouters group */ u8 sk_dr; /* Socket is a member of DRouters group */
u8 marked; /* Used in OSPF reconfigure */ u8 marked; /* Used in OSPF reconfigure */
u16 rxbuf; /* Buffer size */ u16 rxbuf; /* Buffer size */
u16 tx_length; /* Soft TX packet length limit, usually MTU */
u8 check_link; /* Whether iface link change is used */ u8 check_link; /* Whether iface link change is used */
u8 ecmp_weight; /* Weight used for ECMP */ u8 ecmp_weight; /* Weight used for ECMP */
u8 ptp_netmask; /* Send real netmask for P2P */ u8 ptp_netmask; /* Send real netmask for P2P */
@ -704,13 +703,14 @@ struct ospf_neighbor
slist lsrtl; /* Link state retransmission list */ slist lsrtl; /* Link state retransmission list */
siterator lsrti; siterator lsrti;
struct top_graph *lsrth; struct top_graph *lsrth;
void *ldbdes; /* Last database description packet */
timer *rxmt_timer; /* RXMT timer */ timer *rxmt_timer; /* RXMT timer */
list ackl[2]; list ackl[2];
#define ACKL_DIRECT 0 #define ACKL_DIRECT 0
#define ACKL_DELAY 1 #define ACKL_DELAY 1
timer *ackd_timer; /* Delayed ack timer */ timer *ackd_timer; /* Delayed ack timer */
struct bfd_request *bfd_req; /* BFD request, if BFD is used */ struct bfd_request *bfd_req; /* BFD request, if BFD is used */
void *ldd_buffer; /* Last database description packet */
u32 ldd_bsize; /* Buffer size for ldd_buffer */
u32 csn; /* Last received crypt seq number (for MD5) */ u32 csn; /* Last received crypt seq number (for MD5) */
}; };
@ -783,6 +783,7 @@ struct proto_ospf
void *lsab; /* LSA buffer used when originating router LSAs */ void *lsab; /* LSA buffer used when originating router LSAs */
int lsab_size, lsab_used; int lsab_size, lsab_used;
linpool *nhpool; /* Linpool used for next hops computed in SPF */ linpool *nhpool; /* Linpool used for next hops computed in SPF */
sock *vlink_sk; /* IP socket used for vlink TX */
u32 router_id; u32 router_id;
u32 last_vlink_id; /* Interface IDs for vlinks (starts at 0x80000000) */ u32 last_vlink_id; /* Interface IDs for vlinks (starts at 0x80000000) */
}; };
@ -806,9 +807,9 @@ struct ospf_iface_patt
u32 vid; u32 vid;
int tx_tos; int tx_tos;
int tx_priority; int tx_priority;
u16 rxbuf; u16 tx_length;
#define OSPF_RXBUF_NORMAL 0 u16 rx_buffer;
#define OSPF_RXBUF_LARGE 1
#define OSPF_RXBUF_MINSIZE 256 /* Minimal allowed size */ #define OSPF_RXBUF_MINSIZE 256 /* Minimal allowed size */
u16 autype; /* Not really used in OSPFv3 */ u16 autype; /* Not really used in OSPFv3 */
#define OSPF_AUTH_NONE 0 #define OSPF_AUTH_NONE 0
@ -822,6 +823,7 @@ struct ospf_iface_patt
u8 ptp_netmask; /* bool + 2 for unspecified */ u8 ptp_netmask; /* bool + 2 for unspecified */
u8 ttl_security; /* bool + 2 for TX only */ u8 ttl_security; /* bool + 2 for TX only */
u8 bfd; u8 bfd;
u8 bsd_secondary;
#ifdef OSPFv2 #ifdef OSPFv2
list *passwords; list *passwords;

54
proto/ospf/packet.c
View File

@ -39,7 +39,6 @@ ospf_pkt_fill_hdr(struct ospf_iface *ifa, void *buf, u8 h_type)
unsigned unsigned
ospf_pkt_maxsize(struct ospf_iface *ifa) ospf_pkt_maxsize(struct ospf_iface *ifa)
{ {
unsigned mtu = (ifa->type == OSPF_IT_VLINK) ? OSPF_VLINK_MTU : ifa->iface->mtu;
unsigned headers = SIZE_OF_IP_HEADER; unsigned headers = SIZE_OF_IP_HEADER;
#ifdef OSPFv2 #ifdef OSPFv2
@ -47,7 +46,7 @@ ospf_pkt_maxsize(struct ospf_iface *ifa)
headers += OSPF_AUTH_CRYPT_SIZE; headers += OSPF_AUTH_CRYPT_SIZE;
#endif #endif
return mtu - headers; return ifa->tx_length - headers;
} }
#ifdef OSPFv2 #ifdef OSPFv2
@ -263,7 +262,7 @@ ospf_rx_hook(sock *sk, int size)
return 1; return 1;
DBG("OSPF: RX hook called (iface %s, src %I, dst %I)\n", DBG("OSPF: RX hook called (iface %s, src %I, dst %I)\n",
sk->iface->name, sk->faddr, sk->laddr); sk->ifname, sk->faddr, sk->laddr);
/* Initially, the packet is associated with the 'master' iface */ /* Initially, the packet is associated with the 'master' iface */
struct ospf_iface *ifa = sk->data; struct ospf_iface *ifa = sk->data;
@ -321,22 +320,31 @@ ospf_rx_hook(sock *sk, int size)
return 1; return 1;
} }
int osize = ntohs(ps->length); uint plen = ntohs(ps->length);
if ((unsigned) osize < sizeof(struct ospf_packet)) if ((plen < sizeof(struct ospf_packet)) || ((plen % 4) != 0))
{ {
log(L_ERR "%s%I - too low value in size field (%u bytes)", mesg, sk->faddr, osize); log(L_ERR "%s%I - invalid length (%u)", mesg, sk->faddr, plen);
return 1; return 1;
} }
if ((osize > size) || ((osize % 4) != 0)) if (sk->flags & SKF_TRUNCATED)
{ {
log(L_ERR "%s%I - size field does not match (%d/%d)", mesg, sk->faddr, osize, size); log(L_WARN "%s%I - too large (%d/%d)", mesg, sk->faddr, plen, size);
/* If we have dynamic buffers and received truncated message, we expand RX buffer */
uint bs = plen + 256;
bs = BIRD_ALIGN(bs, 1024);
if (!ifa->cf->rx_buffer && (bs > sk->rbsize))
sk_set_rbsize(sk, bs);
return 1; return 1;
} }
if ((unsigned) size > sk->rbsize) if (plen > size)
{ {
log(L_ERR "%s%I - too large (%d vs %d)", mesg, sk->faddr, size, sk->rbsize); log(L_ERR "%s%I - size field does not match (%d/%d)", mesg, sk->faddr, plen, size);
return 1; return 1;
} }
@ -349,7 +357,7 @@ ospf_rx_hook(sock *sk, int size)
#ifdef OSPFv2 #ifdef OSPFv2
if ((ps->autype != htons(OSPF_AUTH_CRYPT)) && if ((ps->autype != htons(OSPF_AUTH_CRYPT)) &&
(!ipsum_verify(ps, 16, (void *) ps + sizeof(struct ospf_packet), (!ipsum_verify(ps, 16, (void *) ps + sizeof(struct ospf_packet),
osize - sizeof(struct ospf_packet), NULL))) plen - sizeof(struct ospf_packet), NULL)))
{ {
log(L_ERR "%s%I - bad checksum", mesg, sk->faddr); log(L_ERR "%s%I - bad checksum", mesg, sk->faddr);
return 1; return 1;
@ -448,7 +456,7 @@ ospf_rx_hook(sock *sk, int size)
if(!n && (ps->type != HELLO_P)) if(!n && (ps->type != HELLO_P))
{ {
log(L_WARN "OSPF: Received non-hello packet from unknown neighbor (src %I, iface %s)", log(L_WARN "OSPF: Received non-hello packet from unknown neighbor (src %I, iface %s)",
sk->faddr, ifa->iface->name); sk->faddr, ifa->ifname);
return 1; return 1;
} }
@ -495,20 +503,30 @@ ospf_rx_hook(sock *sk, int size)
return 1; return 1;
} }
/*
void void
ospf_tx_hook(sock * sk) ospf_tx_hook(sock * sk)
{ {
struct ospf_iface *ifa= (struct ospf_iface *) (sk->data); struct ospf_iface *ifa= (struct ospf_iface *) (sk->data);
// struct proto *p = (struct proto *) (ifa->oa->po); // struct proto *p = (struct proto *) (ifa->oa->po);
log(L_ERR "OSPF: TX hook called on %s", ifa->iface->name); log(L_ERR "OSPF: TX hook called on %s", ifa->ifname);
} }
*/
void void
ospf_err_hook(sock * sk, int err) ospf_err_hook(sock * sk, int err)
{ {
struct ospf_iface *ifa= (struct ospf_iface *) (sk->data); struct ospf_iface *ifa= (struct ospf_iface *) (sk->data);
// struct proto *p = (struct proto *) (ifa->oa->po); struct proto *p = &(ifa->oa->po->proto);
log(L_ERR "OSPF: Socket error on %s: %M", ifa->iface->name, err); log(L_ERR "%s: Socket error on %s: %M", p->name, ifa->ifname, err);
}
void
ospf_verr_hook(sock *sk, int err)
{
struct proto_ospf *po = (struct proto_ospf *) (sk->data);
struct proto *p = &po->proto;
log(L_ERR "%s: Vlink socket error: %M", p->name, err);
} }
void void
@ -543,9 +561,9 @@ ospf_send_to(struct ospf_iface *ifa, ip_addr dst)
#endif #endif
ospf_pkt_finalize(ifa, pkt); ospf_pkt_finalize(ifa, pkt);
if (sk->tbuf != sk->tpos)
log(L_ERR "Aiee, old packet was overwritten in TX buffer");
sk_send_to(sk, len, dst, 0); int done = sk_send_to(sk, len, dst, 0);
if (!done)
log(L_WARN "OSPF: TX queue full on %s", ifa->ifname);
} }

17
proto/ospf/packet.h
View File

@ -11,10 +11,11 @@
#define _BIRD_OSPF_PACKET_H_ #define _BIRD_OSPF_PACKET_H_
void ospf_pkt_fill_hdr(struct ospf_iface *ifa, void *buf, u8 h_type); void ospf_pkt_fill_hdr(struct ospf_iface *ifa, void *buf, u8 h_type);
unsigned ospf_pkt_maxsize(struct ospf_iface *ifa); uint ospf_pkt_maxsize(struct ospf_iface *ifa);
int ospf_rx_hook(sock * sk, int size); int ospf_rx_hook(sock * sk, int size);
void ospf_tx_hook(sock * sk); // void ospf_tx_hook(sock * sk);
void ospf_err_hook(sock * sk, int err); void ospf_err_hook(sock * sk, int err);
void ospf_verr_hook(sock *sk, int err);
void ospf_send_to_agt(struct ospf_iface *ifa, u8 state); void ospf_send_to_agt(struct ospf_iface *ifa, u8 state);
void ospf_send_to_bdr(struct ospf_iface *ifa); void ospf_send_to_bdr(struct ospf_iface *ifa);
void ospf_send_to(struct ospf_iface *ifa, ip_addr ip); void ospf_send_to(struct ospf_iface *ifa, ip_addr ip);
@ -23,17 +24,5 @@ static inline void ospf_send_to_all(struct ospf_iface *ifa) { ospf_send_to(ifa,
static inline void * ospf_tx_buffer(struct ospf_iface *ifa) { return ifa->sk->tbuf; } static inline void * ospf_tx_buffer(struct ospf_iface *ifa) { return ifa->sk->tbuf; }
static inline unsigned
ospf_pkt_bufsize(struct ospf_iface *ifa)
{
#ifdef OSPFv2
unsigned headers = (ifa->autype == OSPF_AUTH_CRYPT) ? OSPF_AUTH_CRYPT_SIZE : 0;
#else
unsigned headers = 0;
#endif
return ifa->sk->tbsize - headers;
}
#endif /* _BIRD_OSPF_PACKET_H_ */ #endif /* _BIRD_OSPF_PACKET_H_ */

38
proto/ospf/rt.c
View File

@ -1079,44 +1079,42 @@ ospf_check_vlinks(struct proto_ospf *po)
{ {
struct proto *p = &po->proto; struct proto *p = &po->proto;
struct ospf_iface *iface; struct ospf_iface *ifa;
WALK_LIST(iface, po->iface_list) WALK_LIST(ifa, po->iface_list)
{ {
if (iface->type == OSPF_IT_VLINK) if (ifa->type == OSPF_IT_VLINK)
{ {
struct top_hash_entry *tmp; struct top_hash_entry *tmp;
tmp = ospf_hash_find_rt(po->gr, iface->voa->areaid, iface->vid); tmp = ospf_hash_find_rt(po->gr, ifa->voa->areaid, ifa->vid);
if (tmp && (tmp->color == INSPF) && ipa_nonzero(tmp->lb) && tmp->nhs) if (tmp && (tmp->color == INSPF) && ipa_nonzero(tmp->lb) && tmp->nhs)
{ {
struct ospf_iface *nhi = ospf_iface_find(po, tmp->nhs->iface); struct ospf_iface *nhi = ospf_iface_find(po, tmp->nhs->iface);
if ((iface->state != OSPF_IS_PTP) if ((ifa->state != OSPF_IS_PTP)
|| (iface->vifa != nhi) || (ifa->vifa != nhi)
|| !ipa_equal(iface->vip, tmp->lb)) || !ipa_equal(ifa->vip, tmp->lb))
{ {
OSPF_TRACE(D_EVENTS, "Vlink peer %R found", tmp->lsa.id); OSPF_TRACE(D_EVENTS, "Vlink peer %R found", tmp->lsa.id);
ospf_iface_sm(iface, ISM_DOWN); ospf_iface_sm(ifa, ISM_DOWN);
iface->vifa = nhi; ifa->vifa = nhi;
iface->iface = nhi->iface; ifa->addr = nhi->addr;
iface->addr = nhi->addr; ifa->cost = tmp->dist;
iface->sk = nhi->sk; ifa->vip = tmp->lb;
iface->cost = tmp->dist; ospf_iface_sm(ifa, ISM_UP);
iface->vip = tmp->lb;
ospf_iface_sm(iface, ISM_UP);
} }
else if ((iface->state == OSPF_IS_PTP) && (iface->cost != tmp->dist)) else if ((ifa->state == OSPF_IS_PTP) && (ifa->cost != tmp->dist))
{ {
iface->cost = tmp->dist; ifa->cost = tmp->dist;
schedule_rt_lsa(po->backbone); schedule_rt_lsa(po->backbone);
} }
} }
else else
{ {
if (iface->state > OSPF_IS_DOWN) if (ifa->state > OSPF_IS_DOWN)
{ {
OSPF_TRACE(D_EVENTS, "Vlink peer %R lost", iface->vid); OSPF_TRACE(D_EVENTS, "Vlink peer %R lost", ifa->vid);
ospf_iface_sm(iface, ISM_DOWN); ospf_iface_sm(ifa, ISM_DOWN);
} }
} }
} }

23
proto/ospf/topology.c
View File

@ -306,7 +306,7 @@ originate_rt_lsa_body(struct ospf_area *oa, u16 *length)
break; break;
default: default:
log("Unknown interface type %s", ifa->iface->name); log("Unknown interface type %s", ifa->ifname);
break; break;
} }
@ -447,7 +447,7 @@ originate_rt_lsa_body(struct ospf_area *oa, u16 *length)
break; break;
default: default:
log("Unknown interface type %s", ifa->iface->name); log("Unknown interface type %s", ifa->ifname);
break; break;
} }
@ -596,8 +596,7 @@ originate_net_lsa(struct ospf_iface *ifa)
void *body; void *body;
OSPF_TRACE(D_EVENTS, "Originating network-LSA for iface %s", OSPF_TRACE(D_EVENTS, "Originating network-LSA for iface %s", ifa->ifname);
ifa->iface->name);
lsa.age = 0; lsa.age = 0;
lsa.type = LSA_T_NET; lsa.type = LSA_T_NET;
@ -628,8 +627,7 @@ flush_net_lsa(struct ospf_iface *ifa)
if (ifa->net_lsa == NULL) if (ifa->net_lsa == NULL)
return; return;
OSPF_TRACE(D_EVENTS, "Flushing network-LSA for iface %s", OSPF_TRACE(D_EVENTS, "Flushing network-LSA for iface %s", ifa->ifname);
ifa->iface->name);
ifa->net_lsa->lsa.sn += 1; ifa->net_lsa->lsa.sn += 1;
ifa->net_lsa->lsa.age = LSA_MAXAGE; ifa->net_lsa->lsa.age = LSA_MAXAGE;
lsasum_calculate(&ifa->net_lsa->lsa, ifa->net_lsa->lsa_body); lsasum_calculate(&ifa->net_lsa->lsa, ifa->net_lsa->lsa_body);
@ -1212,8 +1210,11 @@ originate_link_lsa(struct ospf_iface *ifa)
struct proto *p = &po->proto; struct proto *p = &po->proto;
void *body; void *body;
/* FIXME check for vlink and skip that? */ /* Vlinks do not have link-LSAs */
OSPF_TRACE(D_EVENTS, "Originating link-LSA for iface %s", ifa->iface->name); if (ifa->type == OSPF_IT_VLINK)
return;
OSPF_TRACE(D_EVENTS, "Originating link-LSA for iface %s", ifa->ifname);
lsa.age = 0; lsa.age = 0;
lsa.type = LSA_T_LINK; lsa.type = LSA_T_LINK;
@ -1498,8 +1499,7 @@ originate_prefix_net_lsa(struct ospf_iface *ifa)
struct ospf_lsa_header lsa; struct ospf_lsa_header lsa;
void *body; void *body;
OSPF_TRACE(D_EVENTS, "Originating network prefix-LSA for iface %s", OSPF_TRACE(D_EVENTS, "Originating network prefix-LSA for iface %s", ifa->ifname);
ifa->iface->name);
lsa.age = 0; lsa.age = 0;
lsa.type = LSA_T_PREFIX; lsa.type = LSA_T_PREFIX;
@ -1525,8 +1525,7 @@ flush_prefix_net_lsa(struct ospf_iface *ifa)
if (en == NULL) if (en == NULL)
return; return;
OSPF_TRACE(D_EVENTS, "Flushing network prefix-LSA for iface %s", OSPF_TRACE(D_EVENTS, "Flushing network prefix-LSA for iface %s", ifa->ifname);
ifa->iface->name);
en->lsa.sn += 1; en->lsa.sn += 1;
en->lsa.age = LSA_MAXAGE; en->lsa.age = LSA_MAXAGE;

4
proto/radv/packets.c
View File

@ -404,7 +404,7 @@ radv_sk_open(struct radv_iface *ifa)
sock *sk = sk_new(ifa->ra->p.pool); sock *sk = sk_new(ifa->ra->p.pool);
sk->type = SK_IP; sk->type = SK_IP;
sk->dport = ICMPV6_PROTO; sk->dport = ICMPV6_PROTO;
sk->saddr = IPA_NONE; sk->saddr = ifa->addr->ip;
sk->ttl = 255; /* Mandatory for Neighbor Discovery packets */ sk->ttl = 255; /* Mandatory for Neighbor Discovery packets */
sk->rx_hook = radv_rx_hook; sk->rx_hook = radv_rx_hook;
@ -419,8 +419,6 @@ radv_sk_open(struct radv_iface *ifa)
if (sk_open(sk) != 0) if (sk_open(sk) != 0)
goto err; goto err;
sk->saddr = ifa->addr->ip;
/* We want listen just to ICMPv6 messages of type RS and RA */ /* We want listen just to ICMPv6 messages of type RS and RA */
if (sk_set_icmp_filter(sk, ICMPV6_RS, ICMPV6_RA) < 0) if (sk_set_icmp_filter(sk, ICMPV6_RS, ICMPV6_RA) < 0)
goto err; goto err;

1
proto/rip/rip.c
View File

@ -717,7 +717,6 @@ new_iface(struct proto *p, struct iface *new, unsigned long flags, struct iface_
if (new) { if (new) {
if (new->addr->flags & IA_PEER) if (new->addr->flags & IA_PEER)
log( L_WARN "%s: rip is not defined over unnumbered links", p->name ); log( L_WARN "%s: rip is not defined over unnumbered links", p->name );
rif->sock->saddr = IPA_NONE;
if (rif->multicast) { if (rif->multicast) {
#ifndef IPV6 #ifndef IPV6
rif->sock->daddr = ipa_from_u32(0xe0000009); rif->sock->daddr = ipa_from_u32(0xe0000009);

53
sysdep/bsd/sysio.h
View File

@ -38,18 +38,13 @@ get_inaddr(ip_addr *a, struct in6_addr *ia)
ipa_ntoh(*a); ipa_ntoh(*a);
} }
static inline char *
sysio_bind_to_iface(sock *s)
{
/* Unfortunately not available */
return NULL;
}
#else #else
#include <net/if.h> #include <net/if.h>
#include <net/if_dl.h> #include <net/if_dl.h>
#include <netinet/in_systm.h> // Workaround for some BSDs
#include <netinet/ip.h>
static inline void static inline void
set_inaddr(struct in_addr * ia, ip_addr a) set_inaddr(struct in_addr * ia, ip_addr a)
@ -93,7 +88,7 @@ sysio_setup_multicast(sock *s)
static inline char * static inline char *
sysio_join_group(sock *s, ip_addr maddr) sysio_join_group(sock *s, ip_addr maddr)
{ {
struct ip_mreq mreq; struct ip_mreq mreq;
bzero(&mreq, sizeof(mreq)); bzero(&mreq, sizeof(mreq));
set_inaddr(&mreq.imr_interface, s->iface->addr->ip); set_inaddr(&mreq.imr_interface, s->iface->addr->ip);
@ -152,7 +147,7 @@ sysio_register_cmsgs(sock *s)
return NULL; return NULL;
} }
static void static inline void
sysio_process_rx_cmsgs(sock *s, struct msghdr *msg) sysio_process_rx_cmsgs(sock *s, struct msghdr *msg)
{ {
struct cmsghdr *cm; struct cmsghdr *cm;
@ -190,26 +185,17 @@ sysio_process_rx_cmsgs(sock *s, struct msghdr *msg)
} }
/* Unfortunately, IP_SENDSRCADDR does not work for raw IP sockets on BSD kernels */ /* Unfortunately, IP_SENDSRCADDR does not work for raw IP sockets on BSD kernels */
/*
static void static inline void
sysio_prepare_tx_cmsgs(sock *s, struct msghdr *msg, void *cbuf, size_t cbuflen) sysio_prepare_tx_cmsgs(sock *s, struct msghdr *msg, void *cbuf, size_t cbuflen)
{ {
#ifdef IP_SENDSRCADDR
struct cmsghdr *cm; struct cmsghdr *cm;
struct in_addr *sa; struct in_addr *sa;
if (!(s->flags & SKF_LADDR_TX))
return;
msg->msg_control = cbuf; msg->msg_control = cbuf;
msg->msg_controllen = cbuflen; msg->msg_controllen = cbuflen;
if (s->iface)
{
struct in_addr m;
set_inaddr(&m, s->saddr);
setsockopt(s->fd, IPPROTO_IP, IP_MULTICAST_IF, &m, sizeof(m));
}
cm = CMSG_FIRSTHDR(msg); cm = CMSG_FIRSTHDR(msg);
cm->cmsg_level = IPPROTO_IP; cm->cmsg_level = IPPROTO_IP;
cm->cmsg_type = IP_SENDSRCADDR; cm->cmsg_type = IP_SENDSRCADDR;
@ -219,8 +205,31 @@ sysio_prepare_tx_cmsgs(sock *s, struct msghdr *msg, void *cbuf, size_t cbuflen)
set_inaddr(sa, s->saddr); set_inaddr(sa, s->saddr);
msg->msg_controllen = cm->cmsg_len; msg->msg_controllen = cm->cmsg_len;
#endif
}
static void
fill_ip_header(sock *s, void *hdr, int dlen)
{
struct ip *ip = hdr;
bzero(ip, 20);
ip->ip_v = 4;
ip->ip_hl = 5;
ip->ip_tos = (s->tos < 0) ? 0 : s->tos;
ip->ip_len = 20 + dlen;
ip->ip_ttl = (s->ttl < 0) ? 64 : s->ttl;
ip->ip_p = s->dport;
set_inaddr(&ip->ip_src, s->saddr);
set_inaddr(&ip->ip_dst, s->daddr);
#ifdef __OpenBSD__
/* OpenBSD expects ip_len in network order, other BSDs expect host order */
ip->ip_len = htons(ip->ip_len);
#endif
} }
*/
#endif #endif

2
sysdep/cf/README
View File

@ -8,6 +8,8 @@ CONFIG_ALL_TABLES_AT_ONCE Kernel scanner wants to process all tables at once
CONFIG_MC_PROPER_SRC Multicast packets have source address according to socket saddr field CONFIG_MC_PROPER_SRC Multicast packets have source address according to socket saddr field
CONFIG_SKIP_MC_BIND Don't call bind on multicast socket (def for *BSD) CONFIG_SKIP_MC_BIND Don't call bind on multicast socket (def for *BSD)
CONFIG_NO_IFACE_BIND Bind to iface is not available, use workarounds (def for *BSD)
CONFIG_UNIX_DONTROUTE Use setsockopts DONTROUTE (undef for *BSD) CONFIG_UNIX_DONTROUTE Use setsockopts DONTROUTE (undef for *BSD)
CONFIG_USE_HDRINCL Use IP_HDRINCL instead of control messages for source address on raw IP sockets.
CONFIG_RESTRICTED_PRIVILEGES Implements restricted privileges using drop_uid() CONFIG_RESTRICTED_PRIVILEGES Implements restricted privileges using drop_uid()

1
sysdep/cf/bsd.h
View File

@ -12,6 +12,7 @@
#define CONFIG_SKIP_MC_BIND #define CONFIG_SKIP_MC_BIND
#define CONFIG_NO_IFACE_BIND #define CONFIG_NO_IFACE_BIND
#define CONFIG_USE_HDRINCL
/* /*
Link: sysdep/unix Link: sysdep/unix

56
sysdep/linux/sysio.h
View File

@ -30,17 +30,6 @@ get_inaddr(ip_addr *a, struct in6_addr *ia)
ipa_ntoh(*a); ipa_ntoh(*a);
} }
static inline char *
sysio_bind_to_iface(sock *s)
{
struct ifreq ifr;
strcpy(ifr.ifr_name, s->iface->name);
if (setsockopt(s->fd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr)) < 0)
return "SO_BINDTODEVICE";
return NULL;
}
#else #else
static inline void static inline void
@ -69,11 +58,10 @@ struct ip_mreqn
#endif #endif
static inline void fill_mreqn(struct ip_mreqn *m, struct iface *ifa, ip_addr saddr, ip_addr maddr) static inline void fill_mreqn(struct ip_mreqn *m, ip_addr maddr, struct iface *ifa)
{ {
bzero(m, sizeof(*m)); bzero(m, sizeof(*m));
m->imr_ifindex = ifa->index; m->imr_ifindex = ifa->index;
set_inaddr(&m->imr_address, saddr);
set_inaddr(&m->imr_multiaddr, maddr); set_inaddr(&m->imr_multiaddr, maddr);
} }
@ -90,16 +78,10 @@ sysio_setup_multicast(sock *s)
return "IP_MULTICAST_TTL"; return "IP_MULTICAST_TTL";
/* This defines where should we send _outgoing_ multicasts */ /* This defines where should we send _outgoing_ multicasts */
fill_mreqn(&m, s->iface, s->saddr, IPA_NONE); fill_mreqn(&m, IPA_NONE, s->iface);
if (setsockopt(s->fd, SOL_IP, IP_MULTICAST_IF, &m, sizeof(m)) < 0) if (setsockopt(s->fd, SOL_IP, IP_MULTICAST_IF, &m, sizeof(m)) < 0)
return "IP_MULTICAST_IF"; return "IP_MULTICAST_IF";
/* Is this necessary? */
struct ifreq ifr;
strcpy(ifr.ifr_name, s->iface->name);
if (setsockopt(s->fd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr)) < 0)
return "SO_BINDTODEVICE";
return NULL; return NULL;
} }
@ -109,7 +91,7 @@ sysio_join_group(sock *s, ip_addr maddr)
struct ip_mreqn m; struct ip_mreqn m;
/* And this one sets interface for _receiving_ multicasts from */ /* And this one sets interface for _receiving_ multicasts from */
fill_mreqn(&m, s->iface, s->saddr, maddr); fill_mreqn(&m, maddr, s->iface);
if (setsockopt(s->fd, SOL_IP, IP_ADD_MEMBERSHIP, &m, sizeof(m)) < 0) if (setsockopt(s->fd, SOL_IP, IP_ADD_MEMBERSHIP, &m, sizeof(m)) < 0)
return "IP_ADD_MEMBERSHIP"; return "IP_ADD_MEMBERSHIP";
@ -122,7 +104,7 @@ sysio_leave_group(sock *s, ip_addr maddr)
struct ip_mreqn m; struct ip_mreqn m;
/* And this one sets interface for _receiving_ multicasts from */ /* And this one sets interface for _receiving_ multicasts from */
fill_mreqn(&m, s->iface, s->saddr, maddr); fill_mreqn(&m, maddr, s->iface);
if (setsockopt(s->fd, SOL_IP, IP_DROP_MEMBERSHIP, &m, sizeof(m)) < 0) if (setsockopt(s->fd, SOL_IP, IP_DROP_MEMBERSHIP, &m, sizeof(m)) < 0)
return "IP_DROP_MEMBERSHIP"; return "IP_DROP_MEMBERSHIP";
@ -132,10 +114,7 @@ sysio_leave_group(sock *s, ip_addr maddr)
#endif #endif
#include <linux/socket.h> /* For the case that we have older libc headers */
#include <linux/tcp.h>
/* For the case that we have older kernel headers */
/* Copied from Linux kernel file include/linux/tcp.h */ /* Copied from Linux kernel file include/linux/tcp.h */
#ifndef TCP_MD5SIG #ifndef TCP_MD5SIG
@ -175,7 +154,7 @@ sk_set_md5_auth_int(sock *s, sockaddr *sa, char *passwd)
memcpy(&md5.tcpm_key, passwd, len); memcpy(&md5.tcpm_key, passwd, len);
} }
int rv = setsockopt(s->fd, IPPROTO_TCP, TCP_MD5SIG, &md5, sizeof(md5)); int rv = setsockopt(s->fd, SOL_TCP, TCP_MD5SIG, &md5, sizeof(md5));
if (rv < 0) if (rv < 0)
{ {
@ -203,11 +182,11 @@ sysio_register_cmsgs(sock *s)
int ok = 1; int ok = 1;
if ((s->flags & SKF_LADDR_RX) && if ((s->flags & SKF_LADDR_RX) &&
(setsockopt(s->fd, IPPROTO_IP, IP_PKTINFO, &ok, sizeof(ok)) < 0)) (setsockopt(s->fd, SOL_IP, IP_PKTINFO, &ok, sizeof(ok)) < 0))
return "IP_PKTINFO"; return "IP_PKTINFO";
if ((s->flags & SKF_TTL_RX) && if ((s->flags & SKF_TTL_RX) &&
(setsockopt(s->fd, IPPROTO_IP, IP_RECVTTL, &ok, sizeof(ok)) < 0)) (setsockopt(s->fd, SOL_IP, IP_RECVTTL, &ok, sizeof(ok)) < 0))
return "IP_RECVTTL"; return "IP_RECVTTL";
return NULL; return NULL;
@ -222,10 +201,10 @@ sysio_process_rx_cmsgs(sock *s, struct msghdr *msg)
for (cm = CMSG_FIRSTHDR(msg); cm != NULL; cm = CMSG_NXTHDR(msg, cm)) for (cm = CMSG_FIRSTHDR(msg); cm != NULL; cm = CMSG_NXTHDR(msg, cm))
{ {
if (cm->cmsg_level == IPPROTO_IP && cm->cmsg_type == IP_PKTINFO) if (cm->cmsg_level == SOL_IP && cm->cmsg_type == IP_PKTINFO)
pi = (struct in_pktinfo *) CMSG_DATA(cm); pi = (struct in_pktinfo *) CMSG_DATA(cm);
if (cm->cmsg_level == IPPROTO_IP && cm->cmsg_type == IP_TTL) if (cm->cmsg_level == SOL_IP && cm->cmsg_type == IP_TTL)
ttl = (int *) CMSG_DATA(cm); ttl = (int *) CMSG_DATA(cm);
} }
@ -249,31 +228,28 @@ sysio_process_rx_cmsgs(sock *s, struct msghdr *msg)
return; return;
} }
/*
static void static void
sysio_prepare_tx_cmsgs(sock *s, struct msghdr *msg, void *cbuf, size_t cbuflen) sysio_prepare_tx_cmsgs(sock *s, struct msghdr *msg, void *cbuf, size_t cbuflen)
{ {
struct cmsghdr *cm; struct cmsghdr *cm;
struct in_pktinfo *pi; struct in_pktinfo *pi;
if (!(s->flags & SKF_LADDR_TX))
return;
msg->msg_control = cbuf; msg->msg_control = cbuf;
msg->msg_controllen = cbuflen; msg->msg_controllen = cbuflen;
cm = CMSG_FIRSTHDR(msg); cm = CMSG_FIRSTHDR(msg);
cm->cmsg_level = IPPROTO_IP; cm->cmsg_level = SOL_IP;
cm->cmsg_type = IP_PKTINFO; cm->cmsg_type = IP_PKTINFO;
cm->cmsg_len = CMSG_LEN(sizeof(*pi)); cm->cmsg_len = CMSG_LEN(sizeof(*pi));
pi = (struct in_pktinfo *) CMSG_DATA(cm); pi = (struct in_pktinfo *) CMSG_DATA(cm);
set_inaddr(&pi->ipi_spec_dst, s->saddr);
pi->ipi_ifindex = s->iface ? s->iface->index : 0; pi->ipi_ifindex = s->iface ? s->iface->index : 0;
set_inaddr(&pi->ipi_spec_dst, s->saddr);
set_inaddr(&pi->ipi_addr, IPA_NONE);
msg->msg_controllen = cm->cmsg_len; msg->msg_controllen = cm->cmsg_len;
} }
*/
#endif #endif
@ -292,7 +268,7 @@ sysio_prepare_tx_cmsgs(sock *s, struct msghdr *msg, void *cbuf, size_t cbuflen)
static int static int
sk_set_min_ttl4(sock *s, int ttl) sk_set_min_ttl4(sock *s, int ttl)
{ {
if (setsockopt(s->fd, IPPROTO_IP, IP_MINTTL, &ttl, sizeof(ttl)) < 0) if (setsockopt(s->fd, SOL_IP, IP_MINTTL, &ttl, sizeof(ttl)) < 0)
{ {
if (errno == ENOPROTOOPT) if (errno == ENOPROTOOPT)
log(L_ERR "Kernel does not support IPv4 TTL security"); log(L_ERR "Kernel does not support IPv4 TTL security");
@ -310,7 +286,7 @@ sk_set_min_ttl4(sock *s, int ttl)
static int static int
sk_set_min_ttl6(sock *s, int ttl) sk_set_min_ttl6(sock *s, int ttl)
{ {
if (setsockopt(s->fd, IPPROTO_IPV6, IPV6_MINHOPCOUNT, &ttl, sizeof(ttl)) < 0) if (setsockopt(s->fd, SOL_IPV6, IPV6_MINHOPCOUNT, &ttl, sizeof(ttl)) < 0)
{ {
if (errno == ENOPROTOOPT) if (errno == ENOPROTOOPT)
log(L_ERR "Kernel does not support IPv6 TTL security"); log(L_ERR "Kernel does not support IPv6 TTL security");

292
sysdep/unix/io.c
View File

@ -23,6 +23,8 @@
#include <fcntl.h> #include <fcntl.h>
#include <errno.h> #include <errno.h>
#include <netinet/in.h> #include <netinet/in.h>
#include <netinet/tcp.h>
#include <netinet/udp.h>
#include <netinet/icmp6.h> #include <netinet/icmp6.h>
#include "nest/bird.h" #include "nest/bird.h"
@ -489,6 +491,11 @@ tm_format_datetime(char *x, struct timeformat *fmt_spec, bird_clock_t t)
#define SOL_IPV6 IPPROTO_IPV6 #define SOL_IPV6 IPPROTO_IPV6
#endif #endif
#ifndef SOL_ICMPV6
#define SOL_ICMPV6 IPPROTO_ICMPV6
#endif
static list sock_list; static list sock_list;
static struct birdsock *current_sock; static struct birdsock *current_sock;
static struct birdsock *stored_sock; static struct birdsock *stored_sock;
@ -552,6 +559,43 @@ sk_free(resource *r)
} }
} }
void
sk_set_rbsize(sock *s, uint val)
{
ASSERT(s->rbuf_alloc == s->rbuf);
if (s->rbsize == val)
return;
s->rbsize = val;
xfree(s->rbuf_alloc);
s->rbuf_alloc = xmalloc(val);
s->rpos = s->rbuf = s->rbuf_alloc;
}
void
sk_set_tbsize(sock *s, uint val)
{
ASSERT(s->tbuf_alloc == s->tbuf);
if (s->tbsize == val)
return;
byte *old_tbuf = s->tbuf;
s->tbsize = val;
s->tbuf = s->tbuf_alloc = xrealloc(s->tbuf_alloc, val);
s->tpos = s->tbuf + (s->tpos - old_tbuf);
s->ttx = s->tbuf + (s->ttx - old_tbuf);
}
void
sk_set_tbuf(sock *s, void *tbuf)
{
s->tbuf = tbuf ?: s->tbuf_alloc;
s->ttx = s->tpos = s->tbuf;
}
void void
sk_reallocate(sock *s) sk_reallocate(sock *s)
{ {
@ -703,11 +747,11 @@ sysio_register_cmsgs(sock *s)
int ok = 1; int ok = 1;
if ((s->flags & SKF_LADDR_RX) && if ((s->flags & SKF_LADDR_RX) &&
(setsockopt(s->fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &ok, sizeof(ok)) < 0)) (setsockopt(s->fd, SOL_IPV6, IPV6_RECVPKTINFO, &ok, sizeof(ok)) < 0))
return "IPV6_RECVPKTINFO"; return "IPV6_RECVPKTINFO";
if ((s->flags & SKF_TTL_RX) && if ((s->flags & SKF_TTL_RX) &&
(setsockopt(s->fd, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &ok, sizeof(ok)) < 0)) (setsockopt(s->fd, SOL_IPV6, IPV6_RECVHOPLIMIT, &ok, sizeof(ok)) < 0))
return "IPV6_RECVHOPLIMIT"; return "IPV6_RECVHOPLIMIT";
return NULL; return NULL;
@ -722,10 +766,10 @@ sysio_process_rx_cmsgs(sock *s, struct msghdr *msg)
for (cm = CMSG_FIRSTHDR(msg); cm != NULL; cm = CMSG_NXTHDR(msg, cm)) for (cm = CMSG_FIRSTHDR(msg); cm != NULL; cm = CMSG_NXTHDR(msg, cm))
{ {
if (cm->cmsg_level == IPPROTO_IPV6 && cm->cmsg_type == IPV6_PKTINFO) if (cm->cmsg_level == SOL_IPV6 && cm->cmsg_type == IPV6_PKTINFO)
pi = (struct in6_pktinfo *) CMSG_DATA(cm); pi = (struct in6_pktinfo *) CMSG_DATA(cm);
if (cm->cmsg_level == IPPROTO_IPV6 && cm->cmsg_type == IPV6_HOPLIMIT) if (cm->cmsg_level == SOL_IPV6 && cm->cmsg_type == IPV6_HOPLIMIT)
hlim = (int *) CMSG_DATA(cm); hlim = (int *) CMSG_DATA(cm);
} }
@ -749,32 +793,27 @@ sysio_process_rx_cmsgs(sock *s, struct msghdr *msg)
return; return;
} }
/*
static void static void
sysio_prepare_tx_cmsgs(sock *s, struct msghdr *msg, void *cbuf, size_t cbuflen) sysio_prepare_tx_cmsgs(sock *s, struct msghdr *msg, void *cbuf, size_t cbuflen)
{ {
struct cmsghdr *cm; struct cmsghdr *cm;
struct in6_pktinfo *pi; struct in6_pktinfo *pi;
if (!(s->flags & SKF_LADDR_TX))
return;
msg->msg_control = cbuf; msg->msg_control = cbuf;
msg->msg_controllen = cbuflen; msg->msg_controllen = cbuflen;
cm = CMSG_FIRSTHDR(msg); cm = CMSG_FIRSTHDR(msg);
cm->cmsg_level = IPPROTO_IPV6; cm->cmsg_level = SOL_IPV6;
cm->cmsg_type = IPV6_PKTINFO; cm->cmsg_type = IPV6_PKTINFO;
cm->cmsg_len = CMSG_LEN(sizeof(*pi)); cm->cmsg_len = CMSG_LEN(sizeof(*pi));
pi = (struct in6_pktinfo *) CMSG_DATA(cm); pi = (struct in6_pktinfo *) CMSG_DATA(cm);
set_inaddr(&pi->ipi6_addr, s->saddr);
pi->ipi6_ifindex = s->iface ? s->iface->index : 0; pi->ipi6_ifindex = s->iface ? s->iface->index : 0;
set_inaddr(&pi->ipi6_addr, s->saddr);
msg->msg_controllen = cm->cmsg_len; msg->msg_controllen = cm->cmsg_len;
return;
} }
*/
#endif #endif
static char * static char *
@ -786,11 +825,6 @@ sk_set_ttl_int(sock *s)
#else #else
if (setsockopt(s->fd, SOL_IP, IP_TTL, &s->ttl, sizeof(s->ttl)) < 0) if (setsockopt(s->fd, SOL_IP, IP_TTL, &s->ttl, sizeof(s->ttl)) < 0)
return "IP_TTL"; return "IP_TTL";
#ifdef CONFIG_UNIX_DONTROUTE
int one = 1;
if (s->ttl == 1 && setsockopt(s->fd, SOL_SOCKET, SO_DONTROUTE, &one, sizeof(one)) < 0)
return "SO_DONTROUTE";
#endif
#endif #endif
return NULL; return NULL;
} }
@ -801,6 +835,7 @@ sk_set_ttl_int(sock *s)
static char * static char *
sk_setup(sock *s) sk_setup(sock *s)
{ {
int one = 1;
int fd = s->fd; int fd = s->fd;
char *err = NULL; char *err = NULL;
@ -809,6 +844,41 @@ sk_setup(sock *s)
if (s->type == SK_UNIX) if (s->type == SK_UNIX)
return NULL; return NULL;
if (ipa_nonzero(s->saddr) && !(s->flags & SKF_BIND))
s->flags |= SKF_PKTINFO;
#ifdef CONFIG_USE_HDRINCL
if ((s->type == SK_IP) && (s->flags & SKF_PKTINFO))
{
s->flags &= ~SKF_PKTINFO;
s->flags |= SKF_HDRINCL;
if (setsockopt(fd, SOL_IP, IP_HDRINCL, &one, sizeof(one)) < 0)
ERR("IP_HDRINCL");
}
#endif
if (s->iface)
{
#ifdef SO_BINDTODEVICE
struct ifreq ifr;
strcpy(ifr.ifr_name, s->iface->name);
if (setsockopt(s->fd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr)) < 0)
ERR("SO_BINDTODEVICE");
#endif
#ifdef CONFIG_UNIX_DONTROUTE
if (setsockopt(s->fd, SOL_SOCKET, SO_DONTROUTE, &one, sizeof(one)) < 0)
ERR("SO_DONTROUTE");
#endif
}
if ((s->ttl >= 0) && (err = sk_set_ttl_int(s)))
goto bad;
if (err = sysio_register_cmsgs(s))
goto bad;
#ifdef IPV6 #ifdef IPV6
if ((s->tos >= 0) && setsockopt(fd, SOL_IPV6, IPV6_TCLASS, &s->tos, sizeof(s->tos)) < 0) if ((s->tos >= 0) && setsockopt(fd, SOL_IPV6, IPV6_TCLASS, &s->tos, sizeof(s->tos)) < 0)
WARN("IPV6_TCLASS"); WARN("IPV6_TCLASS");
@ -821,15 +891,10 @@ sk_setup(sock *s)
sk_set_priority(s, s->priority); sk_set_priority(s, s->priority);
#ifdef IPV6 #ifdef IPV6
int v = 1; if ((s->flags & SKF_V6ONLY) && setsockopt(fd, SOL_IPV6, IPV6_V6ONLY, &one, sizeof(one)) < 0)
if ((s->flags & SKF_V6ONLY) && setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &v, sizeof(v)) < 0)
WARN("IPV6_V6ONLY"); WARN("IPV6_V6ONLY");
#endif #endif
if ((s->ttl >= 0) && (err = sk_set_ttl_int(s)))
goto bad;
err = sysio_register_cmsgs(s);
bad: bad:
return err; return err;
} }
@ -926,7 +991,7 @@ sk_set_broadcast(sock *s, int enable)
int int
sk_set_ipv6_checksum(sock *s, int offset) sk_set_ipv6_checksum(sock *s, int offset)
{ {
if (setsockopt(s->fd, IPPROTO_IPV6, IPV6_CHECKSUM, &offset, sizeof(offset)) < 0) if (setsockopt(s->fd, SOL_IPV6, IPV6_CHECKSUM, &offset, sizeof(offset)) < 0)
{ {
log(L_ERR "sk_set_ipv6_checksum: IPV6_CHECKSUM: %m"); log(L_ERR "sk_set_ipv6_checksum: IPV6_CHECKSUM: %m");
return -1; return -1;
@ -945,7 +1010,7 @@ sk_set_icmp_filter(sock *s, int p1, int p2)
ICMP6_FILTER_SETPASS(p1, &f); ICMP6_FILTER_SETPASS(p1, &f);
ICMP6_FILTER_SETPASS(p2, &f); ICMP6_FILTER_SETPASS(p2, &f);
if (setsockopt(s->fd, IPPROTO_ICMPV6, ICMP6_FILTER, &f, sizeof(f)) < 0) if (setsockopt(s->fd, SOL_ICMPV6, ICMP6_FILTER, &f, sizeof(f)) < 0)
{ {
log(L_ERR "sk_setup_icmp_filter: ICMP6_FILTER: %m"); log(L_ERR "sk_setup_icmp_filter: ICMP6_FILTER: %m");
return -1; return -1;
@ -961,7 +1026,7 @@ sk_setup_multicast(sock *s)
int zero = 0; int zero = 0;
int index; int index;
ASSERT(s->iface && s->iface->addr); ASSERT(s->iface);
index = s->iface->index; index = s->iface->index;
if (setsockopt(s->fd, SOL_IPV6, IPV6_MULTICAST_HOPS, &s->ttl, sizeof(s->ttl)) < 0) if (setsockopt(s->fd, SOL_IPV6, IPV6_MULTICAST_HOPS, &s->ttl, sizeof(s->ttl)) < 0)
@ -971,9 +1036,6 @@ sk_setup_multicast(sock *s)
if (setsockopt(s->fd, SOL_IPV6, IPV6_MULTICAST_IF, &index, sizeof(index)) < 0) if (setsockopt(s->fd, SOL_IPV6, IPV6_MULTICAST_IF, &index, sizeof(index)) < 0)
ERR("IPV6_MULTICAST_IF"); ERR("IPV6_MULTICAST_IF");
if (err = sysio_bind_to_iface(s))
goto bad;
return 0; return 0;
bad: bad:
@ -981,18 +1043,17 @@ bad:
return -1; return -1;
} }
#ifdef CONFIG_IPV6_GLIBC_20
#define ipv6mr_interface ipv6mr_ifindex
#endif
int int
sk_join_group(sock *s, ip_addr maddr) sk_join_group(sock *s, ip_addr maddr)
{ {
struct ipv6_mreq mreq; struct ipv6_mreq mreq;
set_inaddr(&mreq.ipv6mr_multiaddr, maddr); set_inaddr(&mreq.ipv6mr_multiaddr, maddr);
#ifdef CONFIG_IPV6_GLIBC_20
mreq.ipv6mr_ifindex = s->iface->index;
#else
mreq.ipv6mr_interface = s->iface->index; mreq.ipv6mr_interface = s->iface->index;
#endif
if (setsockopt(s->fd, SOL_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) < 0) if (setsockopt(s->fd, SOL_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) < 0)
{ {
@ -1009,12 +1070,7 @@ sk_leave_group(sock *s, ip_addr maddr)
struct ipv6_mreq mreq; struct ipv6_mreq mreq;
set_inaddr(&mreq.ipv6mr_multiaddr, maddr); set_inaddr(&mreq.ipv6mr_multiaddr, maddr);
#ifdef CONFIG_IPV6_GLIBC_20
mreq.ipv6mr_ifindex = s->iface->index;
#else
mreq.ipv6mr_interface = s->iface->index; mreq.ipv6mr_interface = s->iface->index;
#endif
if (setsockopt(s->fd, SOL_IPV6, IPV6_LEAVE_GROUP, &mreq, sizeof(mreq)) < 0) if (setsockopt(s->fd, SOL_IPV6, IPV6_LEAVE_GROUP, &mreq, sizeof(mreq)) < 0)
{ {
@ -1032,7 +1088,7 @@ sk_setup_multicast(sock *s)
{ {
char *err; char *err;
ASSERT(s->iface && s->iface->addr); ASSERT(s->iface);
if (err = sysio_setup_multicast(s)) if (err = sysio_setup_multicast(s))
{ {
@ -1142,31 +1198,45 @@ int
sk_open(sock *s) sk_open(sock *s)
{ {
int fd; int fd;
sockaddr sa;
int one = 1; int one = 1;
int type = s->type; int do_bind = 0;
int has_src = ipa_nonzero(s->saddr) || s->sport; int bind_port = 0;
ip_addr bind_addr = IPA_NONE;
sockaddr sa;
char *err; char *err;
switch (type) switch (s->type)
{ {
case SK_TCP_ACTIVE: case SK_TCP_ACTIVE:
s->ttx = ""; /* Force s->ttx != s->tpos */ s->ttx = ""; /* Force s->ttx != s->tpos */
/* Fall thru */ /* Fall thru */
case SK_TCP_PASSIVE: case SK_TCP_PASSIVE:
fd = socket(BIRD_PF, SOCK_STREAM, IPPROTO_TCP); fd = socket(BIRD_PF, SOCK_STREAM, IPPROTO_TCP);
bind_port = s->sport;
bind_addr = s->saddr;
do_bind = bind_port || ipa_nonzero(bind_addr);
break; break;
case SK_UDP: case SK_UDP:
fd = socket(BIRD_PF, SOCK_DGRAM, IPPROTO_UDP); fd = socket(BIRD_PF, SOCK_DGRAM, IPPROTO_UDP);
bind_port = s->sport;
bind_addr = (s->flags & SKF_BIND) ? s->saddr : IPA_NONE;
do_bind = 1;
break; break;
case SK_IP: case SK_IP:
fd = socket(BIRD_PF, SOCK_RAW, s->dport); fd = socket(BIRD_PF, SOCK_RAW, s->dport);
bind_port = 0;
bind_addr = (s->flags & SKF_BIND) ? s->saddr : IPA_NONE;
do_bind = ipa_nonzero(bind_addr);
break; break;
case SK_MAGIC: case SK_MAGIC:
fd = s->fd; fd = s->fd;
break; break;
default: default:
bug("sk_open() called for invalid sock type %d", type); bug("sk_open() called for invalid sock type %d", s->type);
} }
if (fd < 0) if (fd < 0)
die("sk_open: socket: %m"); die("sk_open: socket: %m");
@ -1175,31 +1245,28 @@ sk_open(sock *s)
if (err = sk_setup(s)) if (err = sk_setup(s))
goto bad; goto bad;
if (has_src) if (do_bind)
{ {
int port; if (bind_port)
if (type == SK_IP)
port = 0;
else
{ {
port = s->sport;
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)) < 0) if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)) < 0)
ERR("SO_REUSEADDR"); ERR("SO_REUSEADDR");
#ifdef CONFIG_NO_IFACE_BIND #ifdef CONFIG_NO_IFACE_BIND
/* Workaround missing ability to bind to an iface */ /* Workaround missing ability to bind to an iface */
if ((type == SK_UDP) && s->iface && ipa_zero(s->saddr)) if ((s->type == SK_UDP) && s->iface && ipa_zero(bind_addr))
{ {
if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &one, sizeof(one)) < 0) if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &one, sizeof(one)) < 0)
ERR("SO_REUSEPORT"); ERR("SO_REUSEPORT");
} }
#endif #endif
} }
fill_in_sockaddr(&sa, s->saddr, s->iface, port);
fill_in_sockaddr(&sa, bind_addr, s->iface, bind_port);
if (bind(fd, (struct sockaddr *) &sa, sizeof(sa)) < 0) if (bind(fd, (struct sockaddr *) &sa, sizeof(sa)) < 0)
ERR("bind"); ERR("bind");
} }
fill_in_sockaddr(&sa, s->daddr, s->iface, s->dport); fill_in_sockaddr(&sa, s->daddr, s->iface, s->dport);
if (s->password) if (s->password)
@ -1209,7 +1276,7 @@ sk_open(sock *s)
goto bad_no_log; goto bad_no_log;
} }
switch (type) switch (s->type)
{ {
case SK_TCP_ACTIVE: case SK_TCP_ACTIVE:
if (connect(fd, (struct sockaddr *) &sa, sizeof(sa)) >= 0) if (connect(fd, (struct sockaddr *) &sa, sizeof(sa)) >= 0)
@ -1287,6 +1354,79 @@ sk_open_unix(sock *s, char *name)
die("Unable to create control socket %s", name); die("Unable to create control socket %s", name);
} }
static inline int
sk_sendmsg(sock *s)
{
struct iovec iov = {s->tbuf, s->tpos - s->tbuf};
byte cmsg_buf[CMSG_TX_SPACE];
sockaddr dst;
fill_in_sockaddr(&dst, s->daddr, s->iface, s->dport);
struct msghdr msg = {
.msg_name = &dst,
.msg_namelen = sizeof(dst),
.msg_iov = &iov,
.msg_iovlen = 1
};
#ifdef CONFIG_USE_HDRINCL
byte hdr[20];
struct iovec iov2[2] = { {hdr, 20}, iov };
if (s->flags & SKF_HDRINCL)
{
fill_ip_header(s, hdr, iov.iov_len);
msg.msg_iov = iov2;
msg.msg_iovlen = 2;
}
#endif
if (s->flags & SKF_PKTINFO)
sysio_prepare_tx_cmsgs(s, &msg, cmsg_buf, sizeof(cmsg_buf));
return sendmsg(s->fd, &msg, 0);
}
static inline int
sk_recvmsg(sock *s)
{
struct iovec iov = {s->rbuf, s->rbsize};
byte cmsg_buf[CMSG_RX_SPACE];
sockaddr src;
struct msghdr msg = {
.msg_name = &src,
.msg_namelen = sizeof(src),
.msg_iov = &iov,
.msg_iovlen = 1,
.msg_control = cmsg_buf,
.msg_controllen = sizeof(cmsg_buf),
.msg_flags = 0
};
int rv = recvmsg(s->fd, &msg, 0);
if (rv < 0)
return rv;
//ifdef IPV4
// if (cf_type == SK_IP)
// rv = ipv4_skip_header(pbuf, rv);
//endif
get_sockaddr(&src, &s->faddr, NULL, &s->fport, 1);
sysio_process_rx_cmsgs(s, &msg);
if (msg.msg_flags & MSG_TRUNC)
s->flags |= SKF_TRUNCATED;
else
s->flags &= ~SKF_TRUNCATED;
return rv;
}
static inline void reset_tx_buffer(sock *s) { s->ttx = s->tpos = s->tbuf; } static inline void reset_tx_buffer(sock *s) { s->ttx = s->tpos = s->tbuf; }
static int static int
@ -1323,20 +1463,7 @@ sk_maybe_write(sock *s)
if (s->tbuf == s->tpos) if (s->tbuf == s->tpos)
return 1; return 1;
sockaddr sa; e = sk_sendmsg(s);
fill_in_sockaddr(&sa, s->daddr, s->iface, s->dport);
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};
// sysio_prepare_tx_cmsgs(s, &msg, cmsg_buf, sizeof(cmsg_buf));
e = sendmsg(s->fd, &msg, 0);
if (e < 0) if (e < 0)
{ {
@ -1346,6 +1473,9 @@ sk_maybe_write(sock *s)
s->err_hook(s, errno); s->err_hook(s, errno);
return -1; return -1;
} }
if (!s->tx_hook)
reset_tx_buffer(s);
return 0; return 0;
} }
reset_tx_buffer(s); reset_tx_buffer(s);
@ -1408,12 +1538,15 @@ sk_send(sock *s, unsigned len)
* *
* This is a sk_send() replacement for connection-less packet sockets * This is a sk_send() replacement for connection-less packet sockets
* which allows destination of the packet to be chosen dynamically. * which allows destination of the packet to be chosen dynamically.
* Raw IP sockets should use 0 for @port.
*/ */
int int
sk_send_to(sock *s, unsigned len, ip_addr addr, unsigned port) sk_send_to(sock *s, unsigned len, ip_addr addr, unsigned port)
{ {
s->daddr = addr; s->daddr = addr;
s->dport = port; if (port)
s->dport = port;
s->ttx = s->tbuf; s->ttx = s->tbuf;
s->tpos = s->tbuf + len; s->tpos = s->tbuf + len;
return sk_maybe_write(s); return sk_maybe_write(s);
@ -1480,22 +1613,9 @@ sk_read(sock *s)
return s->rx_hook(s, 0); return s->rx_hook(s, 0);
default: default:
{ {
sockaddr sa;
int e; int e;
struct iovec iov = {s->rbuf, s->rbsize}; e = sk_recvmsg(s);
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) if (e < 0)
{ {
@ -1503,10 +1623,8 @@ sk_read(sock *s)
s->err_hook(s, errno); s->err_hook(s, errno);
return 0; return 0;
} }
s->rpos = s->rbuf + e;
get_sockaddr(&sa, &s->faddr, NULL, &s->fport, 1);
sysio_process_rx_cmsgs(s, &msg);
s->rpos = s->rbuf + e;
s->rx_hook(s, e); s->rx_hook(s, e);
return 1; return 1;
} }