Commit ff2857b0 authored by Ondřej Zajíček's avatar Ondřej Zajíček

Many changes in (mainly) kernel syncers.

- 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
parent e81b440f
......@@ -824,7 +824,14 @@ defined by using the <cf>defined( <m>attribute</m> )</cf> operator.
Network the route is talking about. Read-only. (See the chapter about routing tables.)
<tag><m/enum/ scope</tag>
Address scope of the network (<cf/SCOPE_HOST/ for addresses local to this host, <cf/SCOPE_LINK/ for those specific for a physical link, <cf/SCOPE_SITE/ and <cf/SCOPE_ORGANIZATION/ for private addresses, <cf/SCOPE_UNIVERSE/ for globally visible addresses).
The scope of the route. Possible values: <cf/SCOPE_HOST/ for
routes local to this host, <cf/SCOPE_LINK/ for those specific
for a physical link, <cf/SCOPE_SITE/ and
<cf/SCOPE_ORGANIZATION/ for private routes and
<cf/SCOPE_UNIVERSE/ for globally visible routes. This
attribute is not interpreted by BIRD and can be used to mark
routes in filters. The default value for new routes is
<cf/SCOPE_UNIVERSE/.
<tag><m/int/ preference</tag>
Preference of the route. Valid values are 0-65535. (See the chapter about routing tables.)
......@@ -842,7 +849,11 @@ defined by using the <cf>defined( <m>attribute</m> )</cf> operator.
what protocol has told me about this route. Possible values: <cf/RTS_DUMMY/, <cf/RTS_STATIC/, <cf/RTS_INHERIT/, <cf/RTS_DEVICE/, <cf/RTS_STATIC_DEVICE/, <cf/RTS_REDIRECT/, <cf/RTS_RIP/, <cf/RTS_OSPF/, <cf/RTS_OSPF_IA/, <cf/RTS_OSPF_EXT/, <cf/RTS_BGP/, <cf/RTS_PIPE/.
<tag><m/enum/ cast</tag>
Route type (<cf/RTC_UNICAST/ for normal routes, <cf/RTC_BROADCAST/, <cf/RTC_MULTICAST/, <cf/RTC_ANYCAST/ for broadcast, multicast and anycast routes). Read-only.
Route type (Currently <cf/RTC_UNICAST/ for normal routes,
<cf/RTC_BROADCAST/, <cf/RTC_MULTICAST/, <cf/RTC_ANYCAST/ will
be used in the future for broadcast, multicast and anycast
routes). Read-only.
<tag><m/enum/ dest</tag>
Type of destination the packets should be sent to (<cf/RTD_ROUTER/ for forwarding to a neighboring router, <cf/RTD_NETWORK/ for routing to a directly-connected network, <cf/RTD_BLACKHOLE/ for packets to be silently discarded, <cf/RTD_UNREACHABLE/, <cf/RTD_PROHIBIT/ for packets that should be returned with ICMP host unreachable / ICMP administratively prohibited messages). Read-only.
......
......@@ -50,6 +50,10 @@ struct prefix {
};
#define ip_is_prefix(a,l) (!ipa_nonzero(ipa_and(a, ipa_not(ipa_mkmask(l)))))
#define ipa_zero(x) (!ipa_nonzero(x))
static inline int ipa_classify_net(ip_addr a)
{ return ipa_zero(a) ? (IADDR_HOST | SCOPE_UNIVERSE) : ipa_classify(a); }
/*
* Conversions between internal and string representation
......
......@@ -97,6 +97,7 @@ typedef struct neighbor {
} neighbor;
#define NEF_STICKY 1
#define NEF_ONLINK 2
neighbor *neigh_find(struct proto *, ip_addr *, unsigned flags);
neighbor *neigh_find2(struct proto *p, ip_addr *a, struct iface *ifa, unsigned flags);
......
......@@ -112,12 +112,12 @@ neighbor *
neigh_find2(struct proto *p, ip_addr *a, struct iface *ifa, unsigned flags)
{
neighbor *n;
int class, scope = SCOPE_HOST;
int class, scope = -1; ;
unsigned int h = neigh_hash(p, a);
struct iface *i;
WALK_LIST(n, neigh_hash_table[h]) /* Search the cache */
if (n->proto == p && ipa_equal(*a, n->addr))
if (n->proto == p && ipa_equal(*a, n->addr) && (!ifa || (ifa == n->iface)))
return n;
class = ipa_classify(*a);
......@@ -129,7 +129,12 @@ neigh_find2(struct proto *p, ip_addr *a, struct iface *ifa, unsigned flags)
return NULL; /* Bad scope or a somecast */
if (ifa)
scope = if_connected(a, ifa);
{
scope = if_connected(a, ifa);
if ((scope < 0) && (flags & NEF_ONLINK))
scope = class & IADDR_SCOPE_MASK;
}
else
WALK_LIST(i, iface_list)
if ((scope = if_connected(a, i)) >= 0)
......@@ -138,22 +143,28 @@ neigh_find2(struct proto *p, ip_addr *a, struct iface *ifa, unsigned flags)
break;
}
if (!ifa && !(flags & NEF_STICKY))
/* scope < 0 means i don't know neighbor */
/* scope >= 0 implies ifa != NULL */
if ((scope < 0) && !(flags & NEF_STICKY))
return NULL;
n = sl_alloc(neigh_slab);
n->addr = *a;
n->iface = ifa;
if (ifa)
if (scope >= 0)
{
add_tail(&neigh_hash_table[h], &n->n);
add_tail(&ifa->neighbors, &n->if_n);
}
else
{
/* sticky flag does not work for link-local neighbors;
fortunately, we don't use this combination */
add_tail(&sticky_neigh_list, &n->n);
ifa = NULL;
scope = 0;
}
n->iface = ifa;
n->proto = p;
n->data = NULL;
n->aux = 0;
......
......@@ -113,7 +113,6 @@ proto_new(struct proto_config *c, unsigned size)
p->table = c->table->table;
p->in_filter = c->in_filter;
p->out_filter = c->out_filter;
p->min_scope = SCOPE_SITE;
p->hash_key = random_u32();
c->proto = p;
return p;
......
......@@ -130,7 +130,6 @@ struct proto {
u32 debug; /* Debugging flags */
u32 mrtdump; /* MRTDump flags */
unsigned preference; /* Default route preference */
int min_scope; /* Minimal route scope accepted */
unsigned accept_ra_types; /* Which types of route announcements are accepted (RA_OPTIMAL or RA_ANY) */
unsigned disabled; /* Manually disabled */
unsigned proto_state; /* Protocol state machine (see below) */
......
......@@ -33,6 +33,10 @@ dev_ifa_notify(struct proto *p, unsigned c, struct ifa *ad)
!iface_patt_find(&P->iface_list, ad->iface))
/* Empty list is automagically treated as "*" */
return;
if (ad->scope <= SCOPE_LINK)
return;
if (c & IF_CHANGE_DOWN)
{
net *n;
......@@ -56,7 +60,7 @@ dev_ifa_notify(struct proto *p, unsigned c, struct ifa *ad)
bzero(&A, sizeof(A));
A.proto = p;
A.source = RTS_DEVICE;
A.scope = ad->scope;
A.scope = SCOPE_UNIVERSE;
A.cast = RTC_UNICAST;
A.dest = RTD_DEVICE;
A.iface = ad->iface;
......@@ -76,7 +80,6 @@ dev_init(struct proto_config *c)
struct proto *p = proto_new(c, sizeof(struct proto));
p->ifa_notify = dev_ifa_notify;
p->min_scope = SCOPE_HOST;
return p;
}
......
......@@ -158,7 +158,7 @@ rte_trace_out(unsigned int flag, struct proto *p, rte *e, char *msg)
}
static inline void
do_rte_announce(struct announce_hook *a, int type UNUSED, net *net, rte *new, rte *old, ea_list *tmpa, int class, int refeed)
do_rte_announce(struct announce_hook *a, int type UNUSED, net *net, rte *new, rte *old, ea_list *tmpa, int refeed)
{
struct proto *p = a->proto;
struct filter *filter = p->out_filter;
......@@ -183,13 +183,7 @@ do_rte_announce(struct announce_hook *a, int type UNUSED, net *net, rte *new, rt
stats->exp_updates_received++;
char *drop_reason = NULL;
if ((class & IADDR_SCOPE_MASK) < p->min_scope)
{
stats->exp_updates_rejected++;
drop_reason = "out of scope";
fast_exit_hack = 1;
}
else if ((ok = p->import_control ? p->import_control(p, &new, &tmpa, rte_update_pool) : 0) < 0)
if ((ok = p->import_control ? p->import_control(p, &new, &tmpa, rte_update_pool) : 0) < 0)
{
stats->exp_updates_rejected++;
drop_reason = "rejected by protocol";
......@@ -332,7 +326,6 @@ static void
rte_announce(rtable *tab, unsigned type, net *net, rte *new, rte *old, ea_list *tmpa)
{
struct announce_hook *a;
int class = ipa_classify(net->n.prefix);
if (type == RA_OPTIMAL)
{
......@@ -346,7 +339,7 @@ rte_announce(rtable *tab, unsigned type, net *net, rte *new, rte *old, ea_list *
{
ASSERT(a->proto->core_state == FS_HAPPY || a->proto->core_state == FS_FEEDING);
if (a->proto->accept_ra_types == type)
do_rte_announce(a, type, net, new, old, tmpa, class, 0);
do_rte_announce(a, type, net, new, old, tmpa, 0);
}
}
......@@ -362,33 +355,15 @@ rte_validate(rte *e)
n->n.prefix, n->n.pxlen, e->sender->name);
return 0;
}
if (n->n.pxlen)
c = ipa_classify_net(n->n.prefix);
if ((c < 0) || !(c & IADDR_HOST) || ((c & IADDR_SCOPE_MASK) <= SCOPE_LINK))
{
c = ipa_classify(n->n.prefix);
if (c < 0 || !(c & IADDR_HOST))
{
if (!ipa_nonzero(n->n.prefix))
{
/* Various default routes */
#ifdef IPV6
if (n->n.pxlen == 96)
#else
if (n->n.pxlen <= 1)
#endif
return 1;
}
log(L_WARN "Ignoring bogus route %I/%d received via %s",
n->n.prefix, n->n.pxlen, e->sender->name);
return 0;
}
if ((c & IADDR_SCOPE_MASK) < e->sender->min_scope)
{
log(L_WARN "Ignoring %s scope route %I/%d received from %I via %s",
ip_scope_text(c & IADDR_SCOPE_MASK),
n->n.prefix, n->n.pxlen, e->attrs->from, e->sender->name);
return 0;
}
log(L_WARN "Ignoring bogus route %I/%d received via %s",
n->n.prefix, n->n.pxlen, e->sender->name);
return 0;
}
return 1;
}
......@@ -1018,7 +993,7 @@ do_feed_baby(struct proto *p, int type, struct announce_hook *h, net *n, rte *e)
rte_update_lock();
tmpa = q->make_tmp_attrs ? q->make_tmp_attrs(e, rte_update_pool) : NULL;
do_rte_announce(h, type, n, e, p->refeeding ? e : NULL, tmpa, ipa_classify(n->n.prefix), p->refeeding);
do_rte_announce(h, type, n, e, p->refeeding ? e : NULL, tmpa, p->refeeding);
rte_update_unlock();
}
......@@ -1190,11 +1165,8 @@ rt_show_net(struct cli *c, net *n, struct rt_show_data *d)
if (p2 && p2 != p0) ok = 0;
if (ok && d->export_mode)
{
int class = ipa_classify(n->n.prefix);
int ic;
if ((class & IADDR_SCOPE_MASK) < p1->min_scope)
ok = 0;
else if ((ic = p1->import_control ? p1->import_control(p1, &e, &tmpa, rte_update_pool) : 0) < 0)
if ((ic = p1->import_control ? p1->import_control(p1, &e, &tmpa, rte_update_pool) : 0) < 0)
ok = 0;
else if (!ic && d->export_mode > 1)
{
......
......@@ -914,7 +914,6 @@ bgp_do_rx_update(struct bgp_conn *conn,
rta *a = NULL;
ip_addr prefix;
net *n;
rte e;
int err = 0, pxlen;
p->mp_reach_len = 0;
......@@ -936,8 +935,6 @@ bgp_do_rx_update(struct bgp_conn *conn,
DO_NLRI(mp_reach)
{
int i;
/* Create fake NEXT_HOP attribute */
if (len < 1 || (*x != 16 && *x != 32) || len < *x + 2)
goto bad;
......
......@@ -1234,7 +1234,6 @@ show_lsa_sum_rt(struct top_hash_entry *he)
static inline void
show_lsa_external(struct top_hash_entry *he)
{
struct ospf_lsa_header *lsa = &(he->lsa);
struct ospf_lsa_ext *ext = he->lsa_body;
char str_via[STD_ADDRESS_P_LENGTH + 8] = "";
char str_tag[16] = "";
......@@ -1245,7 +1244,7 @@ show_lsa_external(struct top_hash_entry *he)
rt_metric = ext->metric & METRIC_MASK;
ebit = ext->metric & LSA_EXT_EBIT;
#ifdef OSPFv2
ip = ipa_and(ipa_from_u32(lsa->id), ext->netmask);
ip = ipa_and(ipa_from_u32(he->lsa.id), ext->netmask);
pxlen = ipa_mklen(ext->netmask);
rt_fwaddr = ext->fwaddr;
rt_fwaddr_valid = !ipa_equal(rt_fwaddr, IPA_NONE);
......@@ -1282,10 +1281,7 @@ show_lsa_external(struct top_hash_entry *he)
static inline void
show_lsa_prefix(struct top_hash_entry *he, struct ospf_lsa_header *olsa)
{
struct ospf_lsa_header *lsa = &(he->lsa);
struct ospf_lsa_prefix *px = he->lsa_body;
struct ospf_lsa_ext *ext = he->lsa_body;
char *msg;
ip_addr pxa;
int pxlen;
u8 pxopts;
......@@ -1504,8 +1500,10 @@ ospf_sh_lsadb(struct proto *p)
break;
#ifdef OSPFv3
case LSA_SCOPE_LINK:
struct iface *ifa = if_find_by_index(hea[i]->domain);
cli_msg(-1017, "Link %s", (ifa != NULL) ? ifa->name : "?");
{
struct iface *ifa = if_find_by_index(hea[i]->domain);
cli_msg(-1017, "Link %s", (ifa != NULL) ? ifa->name : "?");
}
break;
#endif
}
......
......@@ -170,7 +170,7 @@ static void
process_prefixes(struct ospf_area *oa)
{
struct proto_ospf *po = oa->po;
struct proto *p = &po->proto;
// struct proto *p = &po->proto;
struct top_hash_entry *en, *src;
struct ospf_lsa_prefix *px;
ip_addr pxa;
......@@ -228,7 +228,6 @@ ospf_rt_spfa_rtlinks(struct ospf_area *oa, struct top_hash_entry *act, struct to
{
// struct proto *p = &oa->po->proto;
struct proto_ospf *po = oa->po;
orta nf;
u32 i;
struct ospf_lsa_rt *rt = en->lsa_body;
......@@ -249,6 +248,7 @@ ospf_rt_spfa_rtlinks(struct ospf_area *oa, struct top_hash_entry *act, struct to
*/
DBG("\n");
orta nf;
nf.type = RTS_OSPF;
nf.options = 0;
nf.metric1 = act->dist + rtl->metric;
......@@ -571,7 +571,7 @@ ospf_rt_sum_tr(struct ospf_area *oa)
type = ORT_NET;
re = (ort *) fib_find(&po->rtf, &ip, pxlen);
}
else if (en->lsa.type == LSA_T_SUM_RT)
else // en->lsa.type == LSA_T_SUM_RT
{
#ifdef OSPFv2
struct ospf_lsa_sum *ls = en->lsa_body;
......
This diff is collapsed.
......@@ -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
......
......@@ -7,7 +7,7 @@
*/
#define CONFIG_AUTO_ROUTES
#undef CONFIG_SELF_CONSCIOUS
#define CONFIG_SELF_CONSCIOUS
#undef CONFIG_MULTIPLE_TABLES
#undef CONFIG_UNIX_IFACE
......
......@@ -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)
{
/* 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, ra.iface,
(i->rtm_flags & RTNH_F_ONLINK) ? NEF_ONLINK : 0);
if (!ng || (ng->scope == SCOPE_HOST))
{
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;
}
......
......@@ -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
......
......@@ -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;
}
......
......@@ -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;
......
......@@ -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
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment