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Many changes in (mainly) kernel syncers.

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- BSD kernel syncer is now self-conscious and can learn alien routes
- important bugfix in BSD kernel syncer (crash after protocol restart)
- many minor changes and bugfixes in kernel syncers and neighbor cache
- direct protocol does not generate host and link local routes
- min_scope check is removed, all routes have SCOPE_UNIVERSE by default
- also fixes some remaining compiler warnings
This commit is contained in:
Ondrej Zajicek
2010-02-26 10:55:58 +01:00
parent e81b440f68
commit ff2857b03d
19 changed files with 279 additions and 298 deletions
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250
sysdep/bsd/krt-sock.c
View File

@@ -33,39 +33,8 @@
#include "lib/string.h"
#include "lib/socket.h"
#ifdef IPV6
#define HOST_MASK 128
#else
#define HOST_MASK 32
#endif
int rt_sock = 0;
#define CHECK_FAMILY(sa) \
((((struct sockaddr *)sa)->sa_family) == BIRD_AF)
static struct iface *
krt_temp_iface_index(struct krt_proto *p, unsigned index)
{
struct iface *i, *j;
WALK_LIST(i, p->scan.temp_ifs)
if (i->index == index)
return i;
i = mb_allocz(p->p.pool, sizeof(struct iface));
if (j = if_find_by_index(index))
{
strcpy(i->name, j->name);
i->addr = j->addr;
}
else
strcpy(i->name, "?");
i->index = index;
add_tail(&p->scan.temp_ifs, &i->n);
return i;
}
int
krt_capable(rte *e)
{
@@ -83,7 +52,7 @@ krt_capable(rte *e)
|| a->dest == RTD_UNREACHABLE
#endif
#ifdef RTF_BLACKHOLE
|| a->dest == RTD_BLACKHOLE /* FIXME Prohibited? */
|| a->dest == RTD_BLACKHOLE
#endif
);
}
@@ -96,6 +65,13 @@ krt_capable(rte *e)
l = ROUNDUP(((struct sockaddr *)&(u))->sa_len);\
memmove(body, &(u), l); body += l;}
#define GETADDR(p, F) \
bzero(p, sizeof(*p));\
if ((addrs & (F)) && ((struct sockaddr *)body)->sa_len) {\
unsigned int l = ROUNDUP(((struct sockaddr *)body)->sa_len);\
memcpy(p, body, (l > sizeof(*p) ? sizeof(*p) : l));\
body += l;}
static void
krt_sock_send(int cmd, rte *e)
{
@@ -108,7 +84,7 @@ krt_sock_send(int cmd, rte *e)
char *body = (char *)msg.buf;
sockaddr gate, mask, dst;
DBG("krt-sock: send %I/%d via %I", net->n.prefix, net->n.pxlen, a->gw);
DBG("krt-sock: send %I/%d via %I\n", net->n.prefix, net->n.pxlen, a->gw);
fill_in_sockaddr(&dst, net->n.prefix, 0);
fill_in_sockaddr(&mask, ipa_mkmask(net->n.pxlen), 0);
@@ -119,9 +95,9 @@ krt_sock_send(int cmd, rte *e)
msg.rtm.rtm_type = cmd;
msg.rtm.rtm_seq = msg_seq++;
msg.rtm.rtm_addrs = RTA_DST;
msg.rtm.rtm_flags = RTF_UP;
msg.rtm.rtm_flags = RTF_UP | RTF_PROTO1;
if (net->n.pxlen == HOST_MASK)
if (net->n.pxlen == MAX_PREFIX_LENGTH)
{
msg.rtm.rtm_flags |= RTF_HOST;
}
@@ -200,12 +176,12 @@ krt_sock_send(int cmd, rte *e)
msg.rtm.rtm_msglen = l;
if ((l = write(rt_sock, (char *)&msg, l)) < 0) {
log(L_ERR "KIF: error writting route to socket (%I/%d)", net->n.prefix, net->n.pxlen);
log(L_ERR "KIF: Error sending route %I/%d to kernel", net->n.prefix, net->n.pxlen);
}
}
void
krt_set_notify(struct krt_proto *p UNUSED, net *net UNUSED, rte *new, rte *old)
krt_set_notify(struct krt_proto *p UNUSED, net *net, rte *new, rte *old)
{
if (old)
{
@@ -258,68 +234,87 @@ krt_set_start(struct krt_proto *x, int first UNUSED)
bug("krt-sock: sk_open failed");
}
#define SKIP(ARG...) do { DBG("KRT: Ignoring route - " ARG); return; } while(0)
static void
krt_read_rt(struct ks_msg *msg, struct krt_proto *p, int scan)
{
sockaddr gate, mask, dst;
rta a;
rte *e;
net *net;
sockaddr dst, gate, mask;
ip_addr idst, igate, imask;
void *body = (char *)msg->buf;
int new = (msg->rtm.rtm_type == RTM_ADD);
int src;
char *errmsg = "KRT: Invalid route received";
int flags = msg->rtm.rtm_flags;
int addrs = msg->rtm.rtm_addrs;
int masklen = -1;
if (!(flags & RTF_UP))
{
DBG("Down.\n");
return;
}
if (!(flags & RTF_UP) && scan)
SKIP("not up in scan\n");
if (flags & RTF_HOST)
masklen = HOST_MASK;
if (!(flags & RTF_DONE) && !scan)
SKIP("not done in async\n");
if(!CHECK_FAMILY(body)) return;
if (flags & RTF_LLINFO)
SKIP("link-local\n");
if(msg->rtm.rtm_flags & RTF_LLINFO) return; /* ARPs etc. */
GETADDR(&dst, RTA_DST);
GETADDR(&gate, RTA_GATEWAY);
GETADDR(&mask, RTA_NETMASK);
#define GETADDR(p, F) \
bzero(p, sizeof(*p));\
if ((addrs & (F)) && ((struct sockaddr *)body)->sa_len) {\
unsigned int l = ROUNDUP(((struct sockaddr *)body)->sa_len);\
memcpy(p, body, (l > sizeof(*p) ? sizeof(*p) : l));\
body += l;}
if (sa_family_check(&dst))
get_sockaddr(&dst, &idst, NULL, 0);
else
SKIP("invalid DST");
GETADDR (&dst, RTA_DST);
GETADDR (&gate, RTA_GATEWAY);
GETADDR (&mask, RTA_NETMASK);
/* We will check later whether we have valid gateway addr */
if (sa_family_check(&gate))
get_sockaddr(&gate, &igate, NULL, 0);
else
igate = IPA_NONE;
idst = IPA_NONE;
igate = IPA_NONE;
imask = IPA_NONE;
get_sockaddr(&dst, &idst, NULL, 0);
if(CHECK_FAMILY(&gate)) get_sockaddr(&gate, &igate, NULL, 0);
/* We do not test family for RTA_NETMASK, because BSD sends us
some strange values, but interpreting them as IPv4/IPv6 works */
get_sockaddr(&mask, &imask, NULL, 0);
if (masklen < 0) masklen = ipa_mklen(imask);
int c = ipa_classify_net(idst);
if ((c < 0) || !(c & IADDR_HOST) || ((c & IADDR_SCOPE_MASK) <= SCOPE_LINK))
SKIP("strange class/scope\n");
int pxlen = (flags & RTF_HOST) ? MAX_PREFIX_LENGTH : ipa_mklen(imask);
if (pxlen < 0)
{ log(L_ERR "%s (%I) - netmask %I", errmsg, idst, imask); return; }
if ((flags & RTF_GATEWAY) && ipa_zero(igate))
{ log(L_ERR "%s (%I/%d) - missing gateway", errmsg, idst, pxlen); return; }
u32 self_mask = RTF_PROTO1;
u32 alien_mask = RTF_STATIC | RTF_PROTO1;
#ifdef RTF_PROTO2
alien_mask |= RTF_PROTO2;
#endif
#ifdef RTF_PROTO3
alien_mask |= RTF_PROTO3;
#endif
if (flags & (RTF_DYNAMIC | RTF_MODIFIED))
{
log(L_WARN "krt: Ignoring redirect to %I/%d via %I", idst, masklen, igate);
return;
}
src = KRT_SRC_REDIRECT;
else if (flags & self_mask)
{
if (!scan)
SKIP("echo\n");
src = KRT_SRC_BIRD;
}
else if (flags & alien_mask)
src = KRT_SRC_ALIEN;
else
src = KRT_SRC_KERNEL;
if (masklen < 0)
{
log(L_WARN "krt: Got invalid route from kernel!");
return;
}
net = net_get(p->p.table, idst, masklen);
net = net_get(p->p.table, idst, pxlen);
bzero(&a, sizeof(a));
@@ -333,56 +328,56 @@ krt_read_rt(struct ks_msg *msg, struct krt_proto *p, int scan)
a.iface = NULL;
a.eattrs = NULL;
a.dest = RTD_NONE;
if (flags & RTF_GATEWAY)
{
neighbor *ng = neigh_find(&p->p, &igate, 0);
if (ng && ng->scope)
a.iface = ng->iface;
else
{
log(L_WARN "Kernel told us to use non-neighbor %I for %I/%d", igate, net->n.prefix, net->n.pxlen);
return;
}
a.dest = RTD_ROUTER;
a.gw = igate;
}
else
{
a.dest = RTD_DEVICE;
a.gw = IPA_NONE;
a.iface = krt_temp_iface_index(p, msg->rtm.rtm_index);
}
/* reject/blackhole routes have also set RTF_GATEWAY,
we wil check them first. */
#ifdef RTF_REJECT
if(flags & RTF_REJECT) {
a.dest = RTD_UNREACHABLE;
a.gw = IPA_NONE;
goto done;
}
#endif
#ifdef RTF_BLACKHOLE
if(flags & RTF_BLACKHOLE) {
a.dest = RTD_BLACKHOLE;
a.gw = IPA_NONE;
goto done;
}
#endif
if (a.dest == RTD_NONE)
a.iface = if_find_by_index(msg->rtm.rtm_index);
if (!a.iface)
{
log(L_ERR "KRT: Received route %I/%d with unknown ifindex %u",
net->n.prefix, net->n.pxlen, msg->rtm.rtm_index);
return;
}
if (flags & RTF_GATEWAY)
{
log(L_WARN "Kernel reporting unknown route type to %I/%d", net->n.prefix, net->n.pxlen);
return;
neighbor *ng;
a.dest = RTD_ROUTER;
a.gw = igate;
ng = neigh_find2(&p->p, &a.gw, a.iface, 0);
if (!ng || (ng->scope == SCOPE_HOST))
{
log(L_ERR "KRT: Received route %I/%d with strange next-hop %I",
net->n.prefix, net->n.pxlen, a.gw);
return;
}
}
else
a.dest = RTD_DEVICE;
src = KRT_SRC_UNKNOWN; /* FIXME */
done:
e = rte_get_temp(&a);
e->net = net;
e->u.krt.src = src;
//e->u.krt.proto = i->rtm_protocol;
//e->u.krt.type = i->rtm_type;
/* These are probably too Linux-specific */
e->u.krt.proto = 0;
e->u.krt.type = 0;
e->u.krt.metric = 0;
if (scan)
@@ -471,6 +466,10 @@ krt_read_addr(struct ks_msg *msg)
int scope, masklen = -1;
int new = (ifam->ifam_type == RTM_NEWADDR);
/* Strange messages with zero (invalid) ifindex appear on OpenBSD */
if (ifam->ifam_index == 0)
return;
if(!(iface = if_find_by_index(ifam->ifam_index)))
{
log(L_ERR "KIF: Received address message for unknown interface %d", ifam->ifam_index);
@@ -486,7 +485,9 @@ krt_read_addr(struct ks_msg *msg)
GETADDR (&null, RTA_AUTHOR);
GETADDR (&brd, RTA_BRD);
if(!CHECK_FAMILY(&addr)) return; /* Some other family address */
/* Some other family address */
if (!sa_family_check(&addr))
return;
get_sockaddr(&addr, &iaddr, NULL, 0);
get_sockaddr(&mask, &imask, NULL, 0);
@@ -593,27 +594,27 @@ krt_sysctl_scan(struct proto *p, pool *pool, byte **buf, size_t *bl, int cmd)
mib[4] = cmd;
mib[5] = 0;
if( sysctl(mib, 6 , NULL , &needed, NULL, 0) < 0)
if (sysctl(mib, 6 , NULL , &needed, NULL, 0) < 0)
{
die("RT scan...");
}
obl = *bl;
while(needed > *bl) *bl *= 2;
while(needed < (*bl/2)) *bl /= 2;
while (needed > *bl) *bl *= 2;
while (needed < (*bl/2)) *bl /= 2;
if( (obl!=*bl) || !*buf)
if ((obl!=*bl) || !*buf)
{
if(*buf) mb_free(*buf);
if( (*buf = mb_alloc(pool, *bl)) == NULL ) die("RT scan buf alloc");
if (*buf) mb_free(*buf);
if ((*buf = mb_alloc(pool, *bl)) == NULL) die("RT scan buf alloc");
}
on = needed;
if( sysctl(mib, 6 , *buf, &needed, NULL, 0) < 0)
if (sysctl(mib, 6 , *buf, &needed, NULL, 0) < 0)
{
if(on != needed) return; /* The buffer size changed since last sysctl */
if (on != needed) return; /* The buffer size changed since last sysctl */
die("RT scan 2");
}
@@ -624,22 +625,23 @@ krt_sysctl_scan(struct proto *p, pool *pool, byte **buf, size_t *bl, int cmd)
}
}
static byte *krt_buffer = NULL;
static byte *kif_buffer = NULL;
static size_t krt_buflen = 32768;
static size_t kif_buflen = 4096;
void
krt_scan_fire(struct krt_proto *p)
{
static byte *buf = NULL;
static size_t bl = 32768;
krt_sysctl_scan((struct proto *)p , p->krt_pool, &buf, &bl, NET_RT_DUMP);
krt_sysctl_scan((struct proto *)p, p->krt_pool, &krt_buffer, &krt_buflen, NET_RT_DUMP);
}
void
krt_if_scan(struct kif_proto *p)
{
static byte *buf = NULL;
static size_t bl = 4096;
struct proto *P = (struct proto *)p;
if_start_update();
krt_sysctl_scan(P, P->pool, &buf, &bl, NET_RT_IFLIST);
krt_sysctl_scan(P, P->pool, &kif_buffer, &kif_buflen, NET_RT_IFLIST);
if_end_update();
}
@@ -652,7 +654,9 @@ krt_set_construct(struct krt_config *c UNUSED)
void
krt_set_shutdown(struct krt_proto *x UNUSED, int last UNUSED)
{
}
mb_free(krt_buffer);
krt_buffer = NULL;
}
void
krt_if_io_init(void)
@@ -672,5 +676,7 @@ krt_if_start(struct kif_proto *p UNUSED)
void
krt_if_shutdown(struct kif_proto *p UNUSED)
{
mb_free(kif_buffer);
kif_buffer = NULL;
}

2
sysdep/cf/bsd-v6.h
View File

@@ -9,7 +9,7 @@
#define IPV6
#define CONFIG_AUTO_ROUTES
#undef CONFIG_SELF_CONSCIOUS
#define CONFIG_SELF_CONSCIOUS
#undef CONFIG_MULTIPLE_TABLES
#undef CONFIG_UNIX_IFACE

2
sysdep/cf/bsd.h
View File

@@ -7,7 +7,7 @@
*/
#define CONFIG_AUTO_ROUTES
#undef CONFIG_SELF_CONSCIOUS
#define CONFIG_SELF_CONSCIOUS
#undef CONFIG_MULTIPLE_TABLES
#undef CONFIG_UNIX_IFACE

151
sysdep/linux/netlink/netlink.c
View File

@@ -52,7 +52,6 @@ struct nl_sock
static struct nl_sock nl_scan = {.fd = -1}; /* Netlink socket for synchronous scan */
static struct nl_sock nl_req = {.fd = -1}; /* Netlink socket for requests */
static void
nl_open_sock(struct nl_sock *nl)
{
@@ -555,23 +554,7 @@ krt_set_notify(struct krt_proto *p, net *n UNUSED, rte *new, rte *old)
nl_send_route(p, new, 1);
}
static struct iface *
krt_temp_iface(struct krt_proto *p, unsigned index)
{
struct iface *i, *j;
WALK_LIST(i, p->scan.temp_ifs)
if (i->index == index)
return i;
i = mb_allocz(p->p.pool, sizeof(struct iface));
if (j = if_find_by_index(index))
strcpy(i->name, j->name);
else
strcpy(i->name, "?");
i->index = index;
add_tail(&p->scan.temp_ifs, &i->n);
return i;
}
#define SKIP(ARG...) do { DBG("KRT: Ignoring route - " ARG); return; } while(0)
static void
nl_parse_route(struct nlmsghdr *h, int scan)
@@ -599,31 +582,7 @@ nl_parse_route(struct nlmsghdr *h, int scan)
#endif
(a[RTA_GATEWAY] && RTA_PAYLOAD(a[RTA_GATEWAY]) != sizeof(ip_addr)))
{
log(L_ERR "nl_parse_route: Malformed message received");
return;
}
p = nl_table_map[i->rtm_table]; /* Do we know this table? */
if (!p)
return;
#ifdef IPV6
if (a[RTA_IIF])
{
DBG("KRT: Ignoring route with IIF set\n");
return;
}
#else
if (i->rtm_tos != 0) /* We don't support TOS */
{
DBG("KRT: Ignoring route with TOS %02x\n", i->rtm_tos);
return;
}
#endif
if (scan && !new)
{
DBG("KRT: Ignoring route deletion\n");
log(L_ERR "KRT: Malformed message received");
return;
}
@@ -634,33 +593,57 @@ nl_parse_route(struct nlmsghdr *h, int scan)
}
else
dst = IPA_NONE;
if (a[RTA_OIF])
memcpy(&oif, RTA_DATA(a[RTA_OIF]), sizeof(oif));
else
oif = ~0;
DBG("Got %I/%d, type=%d, oif=%d, table=%d, prid=%d, proto=%s\n", dst, i->rtm_dst_len, i->rtm_type, oif, i->rtm_table, i->rtm_protocol, p->p.name);
DBG("KRT: Got %I/%d, type=%d, oif=%d, table=%d, prid=%d, proto=%s\n", dst, i->rtm_dst_len, i->rtm_type, oif, i->rtm_table, i->rtm_protocol, p->p.name);
p = nl_table_map[i->rtm_table]; /* Do we know this table? */
if (!p)
SKIP("unknown table %d", i->rtm_table);
#ifdef IPV6
if (a[RTA_IIF])
SKIP("IIF set\n");
#else
if (i->rtm_tos != 0) /* We don't support TOS */
SKIP("TOS %02x\n", i->rtm_tos);
#endif
if (scan && !new)
SKIP("RTM_DELROUTE in scan\n");
int c = ipa_classify_net(dst);
if ((c < 0) || !(c & IADDR_HOST) || ((c & IADDR_SCOPE_MASK) <= SCOPE_LINK))
SKIP("strange class/scope\n");
// ignore rtm_scope, it is not a real scope
// if (i->rtm_scope != RT_SCOPE_UNIVERSE)
// SKIP("scope %u\n", i->rtm_scope);
switch (i->rtm_protocol)
{
case RTPROT_UNSPEC:
SKIP("proto unspec\n");
case RTPROT_REDIRECT:
src = KRT_SRC_REDIRECT;
break;
case RTPROT_KERNEL:
DBG("Route originated in kernel, ignoring\n");
src = KRT_SRC_KERNEL;
return;
case RTPROT_BIRD:
#ifdef IPV6
case RTPROT_BOOT:
/* Current Linux kernels don't remember rtm_protocol for IPv6 routes and supply RTPROT_BOOT instead */
#endif
if (!scan)
{
DBG("Echo of our own route, ignoring\n");
return;
}
SKIP("echo\n");
src = KRT_SRC_BIRD;
break;
case RTPROT_BOOT:
default:
src = KRT_SRC_ALIEN;
}
@@ -679,52 +662,48 @@ nl_parse_route(struct nlmsghdr *h, int scan)
switch (i->rtm_type)
{
case RTN_UNICAST:
if (oif == ~0U)
ra.iface = if_find_by_index(oif);
if (!ra.iface)
{
log(L_ERR "KRT: Mysterious route with no OIF (%I/%d)", net->n.prefix, net->n.pxlen);
log(L_ERR "KRT: Received route %I/%d with unknown ifindex %u",
net->n.prefix, net->n.pxlen, oif);
return;
}
if (a[RTA_GATEWAY])
{
struct iface *ifa = if_find_by_index(oif);
neighbor *ng;
ra.dest = RTD_ROUTER;
memcpy(&ra.gw, RTA_DATA(a[RTA_GATEWAY]), sizeof(ra.gw));
ipa_ntoh(ra.gw);
if (i->rtm_flags & RTNH_F_ONLINK)
ng = neigh_find2(&p->p, &ra.gw, ra.iface,
(i->rtm_flags & RTNH_F_ONLINK) ? NEF_ONLINK : 0);
if (!ng || (ng->scope == SCOPE_HOST))
{
/* route with 'onlink' attribute */
ra.iface = if_find_by_index(oif);
if (ra.iface == NULL)
{
log(L_WARN "Kernel told us to use unknown interface %u for %I/%d",
oif, net->n.prefix, net->n.pxlen);
return;
}
}
else
{
ng = neigh_find2(&p->p, &ra.gw, ifa, 0);
if (ng && ng->scope)
{
if (ng->iface != ifa)
log(L_WARN "KRT: Route with unexpected iface for %I/%d", net->n.prefix, net->n.pxlen);
ra.iface = ng->iface;
}
else
{
log(L_WARN "Kernel told us to use non-neighbor %I for %I/%d", ra.gw, net->n.prefix, net->n.pxlen);
return;
}
log(L_ERR "KRT: Received route %I/%d with strange next-hop %I",
net->n.prefix, net->n.pxlen, ra.gw);
return;
}
}
else
{
ra.dest = RTD_DEVICE;
ra.iface = krt_temp_iface(p, oif);
/*
* In Linux IPv6, 'native' device routes have proto
* RTPROT_BOOT and not RTPROT_KERNEL (which they have in
* IPv4 and which is expected). We cannot distinguish
* 'native' and user defined device routes, so we ignore all
* such device routes and for consistency, we have the same
* behavior in IPv4. Anyway, users should use RTPROT_STATIC
* for their 'alien' routes.
*/
if (i->rtm_protocol == RTPROT_BOOT)
src = KRT_SRC_KERNEL;
}
break;
case RTN_BLACKHOLE:
ra.dest = RTD_BLACKHOLE;
@@ -737,13 +716,7 @@ nl_parse_route(struct nlmsghdr *h, int scan)
break;
/* FIXME: What about RTN_THROW? */
default:
DBG("KRT: Ignoring route with type=%d\n", i->rtm_type);
return;
}
if (i->rtm_scope != RT_SCOPE_UNIVERSE)
{
DBG("KRT: Ignoring route with scope=%d\n", i->rtm_scope);
SKIP("type %d\n", i->rtm_type);
return;
}

2
sysdep/unix/io.c
View File

@@ -663,7 +663,6 @@ get_sockaddr(struct sockaddr_in *sa, ip_addr *a, unsigned *port, int check)
static char *
sk_set_ttl_int(sock *s)
{
int one = 1;
#ifdef IPV6
if (setsockopt(s->fd, SOL_IPV6, IPV6_UNICAST_HOPS, &s->ttl, sizeof(s->ttl)) < 0)
return "IPV6_UNICAST_HOPS";
@@ -671,6 +670,7 @@ sk_set_ttl_int(sock *s)
if (setsockopt(s->fd, SOL_IP, IP_TTL, &s->ttl, sizeof(s->ttl)) < 0)
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

40
sysdep/unix/krt.c
View File

@@ -558,32 +558,30 @@ krt_got_route(struct krt_proto *p, rte *e)
rte *old;
net *net = e->net;
int verdict;
#ifdef KRT_ALLOW_LEARN
int src = e->u.krt.src;
#endif
#ifdef CONFIG_AUTO_ROUTES
if (e->attrs->dest == RTD_DEVICE)
#ifdef KRT_ALLOW_LEARN
switch (e->u.krt.src)
{
/* It's a device route. Probably a kernel-generated one. */
case KRT_SRC_KERNEL:
verdict = KRF_IGNORE;
goto sentenced;
}
#endif
#ifdef KRT_ALLOW_LEARN
if (src == KRT_SRC_ALIEN)
{
case KRT_SRC_REDIRECT:
verdict = KRF_DELETE;
goto sentenced;
case KRT_SRC_ALIEN:
if (KRT_CF->learn)
krt_learn_scan(p, e);
else
{
krt_trace_in_rl(&rl_alien_ignored, p, e, "alien route, ignored");
krt_trace_in_rl(&rl_alien_ignored, p, e, "[alien] ignored");
rte_free(e);
}
return;
}
#endif
/* The rest is for KRT_SRC_BIRD (or KRT_SRC_UNKNOWN) */
if (net->n.flags & KRF_VERDICT_MASK)
{
@@ -605,7 +603,7 @@ krt_got_route(struct krt_proto *p, rte *e)
else
verdict = KRF_DELETE;
sentenced:
sentenced:
krt_trace_in(p, e, ((char *[]) { "?", "seen", "will be updated", "will be removed", "ignored" }) [verdict]);
net->n.flags = (net->n.flags & ~KRF_VERDICT_MASK) | verdict;
if (verdict == KRF_UPDATE || verdict == KRF_DELETE)
@@ -680,19 +678,24 @@ krt_prune(struct krt_proto *p)
}
void
krt_got_route_async(struct krt_proto *p, rte *e, int new UNUSED)
krt_got_route_async(struct krt_proto *p, rte *e, int new)
{
net *net = e->net;
int src = e->u.krt.src;
switch (src)
switch (e->u.krt.src)
{
case KRT_SRC_BIRD:
ASSERT(0); /* Should be filtered by the back end */
case KRT_SRC_REDIRECT:
DBG("It's a redirect, kill him! Kill! Kill!\n");
krt_set_notify(p, net, NULL, e);
if (new)
{
krt_trace_in(p, e, "[redirect] deleting");
krt_set_notify(p, net, NULL, e);
}
/* If !new, it is probably echo of our deletion */
break;
#ifdef KRT_ALLOW_LEARN
case KRT_SRC_ALIEN:
if (KRT_CF->learn)
@@ -878,7 +881,6 @@ krt_init(struct proto_config *c)
p->p.accept_ra_types = RA_OPTIMAL;
p->p.rt_notify = krt_notify;
p->p.min_scope = SCOPE_HOST;
return &p->p;
}

1
sysdep/unix/krt.h
View File

@@ -83,6 +83,7 @@ void krt_got_route_async(struct krt_proto *p, struct rte *e, int new);
#define KRT_SRC_BIRD 0 /* Our route (not passed in async mode) */
#define KRT_SRC_REDIRECT 1 /* Redirect route, delete it */
#define KRT_SRC_ALIEN 2 /* Route installed by someone else */
#define KRT_SRC_KERNEL 3 /* Kernel routes, are ignored by krt syncer */
extern struct protocol proto_unix_iface;

4
sysdep/unix/unix.h
View File

@@ -9,6 +9,8 @@
#ifndef _BIRD_UNIX_H_
#define _BIRD_UNIX_H_
#include <sys/socket.h>
struct pool;
/* main.c */
@@ -29,10 +31,12 @@ volatile int async_shutdown_flag;
#define BIRD_PF PF_INET6
#define BIRD_AF AF_INET6
typedef struct sockaddr_in6 sockaddr;
static inline int sa_family_check(sockaddr *sa) { return sa->sin6_family == AF_INET6; }
#else
#define BIRD_PF PF_INET
#define BIRD_AF AF_INET
typedef struct sockaddr_in sockaddr;
static inline int sa_family_check(sockaddr *sa) { return sa->sin_family == AF_INET; }
#endif
#ifndef SUN_LEN