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-rw-r--r--TODO2
-rw-r--r--bird.conf9
-rw-r--r--sysdep/linux/krt-scan.Y6
-rw-r--r--sysdep/linux/krt-scan.c94
-rw-r--r--sysdep/linux/krt-scan.h5
-rw-r--r--sysdep/unix/Modules2
-rw-r--r--sysdep/unix/krt-iface.Y30
-rw-r--r--sysdep/unix/krt-iface.h16
-rw-r--r--sysdep/unix/krt-set.c74
-rw-r--r--sysdep/unix/krt.h9
-rw-r--r--sysdep/unix/sync-if.c38
-rw-r--r--sysdep/unix/sync-rt.c3
12 files changed, 212 insertions, 76 deletions
diff --git a/TODO b/TODO
index 6298a53..476506f 100644
--- a/TODO
+++ b/TODO
@@ -16,9 +16,11 @@ Core
- default preferences of protocols: prefer BGP over OSPF/RIP external routes?
- secondary addresses -> subinterfaces
- check if all protocols set proper packet priorities and TTL's.
+
- better default protocol names
- config: comments at end of line -> explicit ';' needed?
- remove post-config hooks?
+- command-line arguments: name of config file
- static: check validity of route destination?
- static: device routes
diff --git a/bird.conf b/bird.conf
index 1d1c39a..6411a56 100644
--- a/bird.conf
+++ b/bird.conf
@@ -20,13 +20,18 @@ protocol device {
protocol kernel {
# disabled
- learn; # Learn all routes from the kernel
+# learn; # Learn all routes from the kernel
scan time 10; # Scan kernel tables every 10 seconds
+# route scan time 20; # But routes only every 20 seconds
}
protocol static {
# disabled
+ route 0.0.0.0/0 via 62.168.0.13
+ route 62.168.0.0/25 reject
# route 10.0.0.0/8 reject
-# route 10.1.0.0:255.255.255.0 via 62.168.0.3
+# route 10.1.1.0:255.255.255.0 via 62.168.0.3
+# route 10.1.2.0:255.255.255.0 via 62.168.0.3
+# route 10.1.3.0:255.255.255.0 via 62.168.0.4
# route 10.2.0.0/24 via "arc0"
}
diff --git a/sysdep/linux/krt-scan.Y b/sysdep/linux/krt-scan.Y
index fcdcfe6..d02df11 100644
--- a/sysdep/linux/krt-scan.Y
+++ b/sysdep/linux/krt-scan.Y
@@ -12,7 +12,7 @@ CF_HDR
CF_DECLS
-CF_KEYWORDS(LEARN, SCAN, TIME)
+CF_KEYWORDS(LEARN, ROUTE, SCAN, TIME)
CF_GRAMMAR
@@ -22,9 +22,9 @@ krt_scan_item:
LEARN bool {
((struct krt_proto *) this_proto)->scanopt.learn = $2;
}
- | SCAN TIME expr {
+ | ROUTE SCAN TIME expr {
/* Scan time of 0 means scan on startup only */
- ((struct krt_proto *) this_proto)->scanopt.recurrence = $3;
+ ((struct krt_proto *) this_proto)->scanopt.scan_time = $4;
}
;
diff --git a/sysdep/linux/krt-scan.c b/sysdep/linux/krt-scan.c
index 7dd6415..9801f8a 100644
--- a/sysdep/linux/krt-scan.c
+++ b/sysdep/linux/krt-scan.c
@@ -8,6 +8,7 @@
#include <string.h>
#include <stdio.h>
+#include <ctype.h>
#include <fcntl.h>
#include <unistd.h>
#include <net/route.h>
@@ -28,6 +29,22 @@ static int krt_scan_fd = -1;
/* FIXME: Filtering */
+struct iface *
+krt_temp_iface(struct krt_proto *x, char *name)
+{
+ SCANOPT;
+ struct iface *i;
+
+ WALK_LIST(i, p->temp_ifs)
+ if (!strcmp(i->name, name))
+ return i;
+ i = mb_alloc(x->p.pool, sizeof(struct iface));
+ bzero(i, sizeof(*i));
+ strcpy(i->name, name);
+ add_tail(&p->temp_ifs, &i->n);
+ return i;
+}
+
static int
krt_uptodate(rte *k, rte *e)
{
@@ -35,10 +52,15 @@ krt_uptodate(rte *k, rte *e)
if (ka->dest != ea->dest)
return 0;
- if (ka->dest == RTD_ROUTER && !ipa_equal(ka->gw, ea->gw))
- return 0;
- /* FIXME: Device routes */
- return 1;
+ switch (ka->dest)
+ {
+ case RTD_ROUTER:
+ return ipa_equal(ka->gw, ea->gw);
+ case RTD_DEVICE:
+ return !strcmp(ka->iface->name, ea->iface->name);
+ default:
+ return 1;
+ }
}
static void
@@ -76,7 +98,10 @@ krt_parse_entry(byte *ent, struct krt_proto *p)
DBG("Got %I/%d via %I flags %x\n", dest, masklen, gw, flags);
if (!(flags & RTF_UP))
- return;
+ {
+ DBG("Down.\n");
+ return;
+ }
if (flags & RTF_HOST)
masklen = 32;
if (flags & (RTF_DYNAMIC | RTF_MODIFIED)) /* Redirect route */
@@ -86,6 +111,13 @@ krt_parse_entry(byte *ent, struct krt_proto *p)
}
net = net_get(&master_table, 0, dest, masklen);
+ if (net->n.flags)
+ {
+ /* Route to this destination was already seen. Strange, but it happens... */
+ DBG("Already seen.\n");
+ return;
+ }
+
a.proto = &p->p;
a.source = RTS_INHERIT;
a.scope = SCOPE_UNIVERSE;
@@ -102,7 +134,7 @@ krt_parse_entry(byte *ent, struct krt_proto *p)
a.iface = ng->iface;
else
/* FIXME: Remove this warning? */
- log(L_WARN "Kernel told us to use non-neighbor %I for %I/%d\n", gw, net->n.prefix, net->n.pxlen);
+ log(L_WARN "Kernel told us to use non-neighbor %I for %I/%d", gw, net->n.prefix, net->n.pxlen);
a.dest = RTD_ROUTER;
a.gw = gw;
}
@@ -111,10 +143,15 @@ krt_parse_entry(byte *ent, struct krt_proto *p)
a.dest = RTD_UNREACHABLE;
a.gw = IPA_NONE;
}
+ else if (isalpha(iface[0]))
+ {
+ a.dest = RTD_DEVICE;
+ a.gw = IPA_NONE;
+ a.iface = krt_temp_iface(p, iface);
+ }
else
{
- /* FIXME: Should support interface routes? */
- /* FIXME: What about systems not generating their own if routes? (see CONFIG_AUTO_ROUTES) */
+ log(L_WARN "Kernel reporting unknown route type to %I/%d", net->n.prefix, net->n.pxlen);
return;
}
@@ -135,13 +172,14 @@ krt_parse_entry(byte *ent, struct krt_proto *p)
else
verdict = KRF_DELETE;
- DBG("krt_parse_entry: verdict %d\n", verdict);
+ DBG("krt_parse_entry: verdict=%s\n", ((char *[]) { "CREATE", "SEEN", "UPDATE", "DELETE", "LEARN" }) [verdict]);
net->n.flags = verdict;
if (verdict != KRF_SEEN)
{
/* Get a cached copy of attributes and link the route */
- e->attrs = rta_lookup(e->attrs);
+ a.source = RTS_DUMMY;
+ e->attrs = rta_lookup(&a);
e->next = net->routes;
net->routes = e;
}
@@ -155,7 +193,7 @@ krt_scan_proc(struct krt_proto *p)
byte buf[32768];
int l, seen_hdr;
- DBG("Scanning kernel table...\n");
+ DBG("Scanning kernel routing table...\n");
if (krt_scan_fd < 0)
{
krt_scan_fd = open("/proc/net/route", O_RDONLY);
@@ -263,13 +301,18 @@ krt_prune(struct krt_proto *p)
FIB_WALK_END;
}
-static void
-krt_scan_fire(timer *t)
+void
+krt_scan_ifaces_done(struct krt_proto *x)
{
- struct krt_proto *p = t->data;
+ SCANOPT;
- if (krt_scan_proc(p))
- krt_prune(p);
+ p->accum_time += x->ifopt.scan_time;
+ if (p->scan_time && p->accum_time >= p->scan_time)
+ {
+ p->accum_time %= p->scan_time;
+ if (krt_scan_proc(x))
+ krt_prune(x);
+ }
}
void
@@ -277,30 +320,21 @@ krt_scan_preconfig(struct krt_proto *x)
{
SCANOPT;
- p->recurrence = 60;
+ p->scan_time = 1;
p->learn = 0;
+ init_list(&p->temp_ifs);
}
void
krt_scan_start(struct krt_proto *x)
{
SCANOPT;
- timer *t = tm_new(x->p.pool);
-
- p->timer = t;
- t->hook = krt_scan_fire;
- t->data = x;
- t->recurrent = p->recurrence;
- krt_scan_fire(t);
- if (t->recurrent)
- tm_start(t, t->recurrent);
+
+ /* Force krt scan after first interface scan */
+ p->accum_time = p->scan_time - x->ifopt.scan_time;
}
void
krt_scan_shutdown(struct krt_proto *x)
{
- SCANOPT;
-
- tm_stop(p->timer);
- /* FIXME: Remove all krt's? */
}
diff --git a/sysdep/linux/krt-scan.h b/sysdep/linux/krt-scan.h
index 18073e2..fe41d46 100644
--- a/sysdep/linux/krt-scan.h
+++ b/sysdep/linux/krt-scan.h
@@ -10,9 +10,10 @@
#define _BIRD_KRT_SCAN_H_
struct krt_scan_params {
- int recurrence; /* How often should we scan krt, 0=only on startup */
int learn; /* Should we learn routes from the kernel? */
- struct timer *timer;
+ list temp_ifs; /* Temporary interfaces */
+ int scan_time; /* How often should we scan krt, 0=only on startup */
+ int accum_time; /* Accumulated scanning time */
};
#endif
diff --git a/sysdep/unix/Modules b/sysdep/unix/Modules
index 441c3f0..f6db6d3 100644
--- a/sysdep/unix/Modules
+++ b/sysdep/unix/Modules
@@ -9,3 +9,5 @@ krt.Y
krt.h
krt-set.c
krt-set.h
+krt-iface.h
+krt-iface.Y
diff --git a/sysdep/unix/krt-iface.Y b/sysdep/unix/krt-iface.Y
new file mode 100644
index 0000000..becb70c
--- /dev/null
+++ b/sysdep/unix/krt-iface.Y
@@ -0,0 +1,30 @@
+/*
+ * BIRD -- UNIX Interface Syncer Configuration
+ *
+ * (c) 1998 Martin Mares <mj@ucw.cz>
+ *
+ * Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+CF_HDR
+
+#include "lib/krt-scan.h"
+
+CF_DECLS
+
+CF_KEYWORDS(LEARN, ROUTE, SCAN, TIME)
+
+CF_GRAMMAR
+
+CF_ADDTO(kern_proto, kern_proto krt_if_item ';')
+
+krt_if_item:
+ SCAN TIME expr {
+ /* Scan time of 0 means scan on startup only */
+ ((struct krt_proto *) this_proto)->ifopt.scan_time = $3;
+ }
+ ;
+
+CF_CODE
+
+CF_END
diff --git a/sysdep/unix/krt-iface.h b/sysdep/unix/krt-iface.h
new file mode 100644
index 0000000..95cfff8
--- /dev/null
+++ b/sysdep/unix/krt-iface.h
@@ -0,0 +1,16 @@
+/*
+ * BIRD -- Unix Kernel Interface Syncer -- Setting Parameters
+ *
+ * (c) 1998 Martin Mares <mj@ucw.cz>
+ *
+ * Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+#ifndef _BIRD_KRT_IFACE_H_
+#define _BIRD_KRT_IFACE_H_
+
+struct krt_if_params {
+ int scan_time;
+};
+
+#endif
diff --git a/sysdep/unix/krt-set.c b/sysdep/unix/krt-set.c
index 8bc2df1..33d5bca 100644
--- a/sysdep/unix/krt-set.c
+++ b/sysdep/unix/krt-set.c
@@ -29,9 +29,7 @@ krt_capable(rte *e)
return
a->cast == RTC_UNICAST &&
(a->dest == RTD_ROUTER
-#ifndef CONFIG_AUTO_ROUTES
|| a->dest == RTD_DEVICE
-#endif
#ifdef RTF_REJECT
|| a->dest == RTD_UNREACHABLE
#endif
@@ -39,38 +37,25 @@ krt_capable(rte *e)
!a->tos;
}
-void
-krt_remove_route(rte *old)
+static inline int
+krt_capable_op(rte *e)
{
- net *net = old->net;
- struct rtentry re;
+ rta *a = e->attrs;
- if (!krt_capable(old) || old->attrs->source == RTS_INHERIT)
- {
- DBG("krt_remove_route(ignored %I/%d)\n", net->n.prefix, net->n.pxlen);
- return;
- }
- DBG("krt_remove_route(%I/%d)\n", net->n.prefix, net->n.pxlen);
- bzero(&re, sizeof(re));
- fill_in_sockaddr((struct sockaddr_in *) &re.rt_dst, net->n.prefix, 0);
- fill_in_sockaddr((struct sockaddr_in *) &re.rt_genmask, ipa_mkmask(net->n.pxlen), 0);
- if (ioctl(if_scan_sock, SIOCDELRT, &re) < 0)
- log(L_ERR "SIOCDELRT(%I/%d): %m", net->n.prefix, net->n.pxlen);
+#ifdef CONFIG_AUTO_ROUTES
+ if (a->dest == RTD_ROUTER && a->source == RTS_DEVICE)
+ return 0;
+#endif
+ return krt_capable(e);
}
-void
-krt_add_route(rte *new)
+static void
+krt_ioctl(int ioc, rte *e, char *name)
{
- net *net = new->net;
+ net *net = e->net;
struct rtentry re;
- rta *a = new->attrs;
+ rta *a = e->attrs;
- if (!krt_capable(new) || new->attrs->source == RTS_INHERIT)
- {
- DBG("krt_add_route(ignored %I/%d)\n", net->n.prefix, net->n.pxlen);
- return;
- }
- DBG("krt_add_route(%I/%d)\n", net->n.prefix, net->n.pxlen);
bzero(&re, sizeof(re));
fill_in_sockaddr((struct sockaddr_in *) &re.rt_dst, net->n.prefix, 0);
fill_in_sockaddr((struct sockaddr_in *) &re.rt_genmask, ipa_mkmask(net->n.pxlen), 0);
@@ -83,11 +68,9 @@ krt_add_route(rte *new)
fill_in_sockaddr((struct sockaddr_in *) &re.rt_gateway, a->gw, 0);
re.rt_flags |= RTF_GATEWAY;
break;
-#ifndef CONFIG_AUTO_ROUTES
case RTD_DEVICE:
re.rt_dev = a->iface->name;
break;
-#endif
#ifdef RTF_REJECT
case RTD_UNREACHABLE:
re.rt_flags |= RTF_REJECT;
@@ -97,8 +80,36 @@ krt_add_route(rte *new)
die("krt set: unknown flags, but not filtered");
}
- if (ioctl(if_scan_sock, SIOCADDRT, &re) < 0)
- log(L_ERR "SIOCADDRT(%I/%d): %m", net->n.prefix, net->n.pxlen);
+ if (ioctl(if_scan_sock, ioc, &re) < 0)
+ log(L_ERR "%s(%I/%d): %m", name, net->n.prefix, net->n.pxlen);
+}
+
+void
+krt_remove_route(rte *old)
+{
+ net *net = old->net;
+
+ if (!krt_capable_op(old))
+ {
+ DBG("krt_remove_route(ignored %I/%d)\n", net->n.prefix, net->n.pxlen);
+ return;
+ }
+ DBG("krt_remove_route(%I/%d)\n", net->n.prefix, net->n.pxlen);
+ krt_ioctl(SIOCDELRT, old, "SIOCDELRT");
+}
+
+void
+krt_add_route(rte *new)
+{
+ net *net = new->net;
+
+ if (!krt_capable_op(new))
+ {
+ DBG("krt_add_route(ignored %I/%d)\n", net->n.prefix, net->n.pxlen);
+ return;
+ }
+ DBG("krt_add_route(%I/%d)\n", net->n.prefix, net->n.pxlen);
+ krt_ioctl(SIOCADDRT, new, "SIOCADDRT");
}
void
@@ -119,4 +130,3 @@ krt_set_preconfig(struct krt_proto *x)
die("krt set: missing socket");
x->p.rt_notify = krt_set_notify;
}
-
diff --git a/sysdep/unix/krt.h b/sysdep/unix/krt.h
index aae5bd5..4ea88d5 100644
--- a/sysdep/unix/krt.h
+++ b/sysdep/unix/krt.h
@@ -11,6 +11,7 @@
#include "lib/krt-scan.h"
#include "lib/krt-set.h"
+#include "lib/krt-iface.h"
/* Flags stored in net->n.flags */
@@ -28,6 +29,7 @@ struct krt_proto {
struct proto p;
struct krt_set_params setopt;
struct krt_scan_params scanopt;
+ struct krt_if_params ifopt;
};
extern struct proto *cf_krt_proto;
@@ -37,9 +39,16 @@ extern struct proto *cf_krt_proto;
void krt_scan_preconfig(struct krt_proto *);
void krt_scan_start(struct krt_proto *);
void krt_scan_shutdown(struct krt_proto *);
+void krt_scan_ifaces_done(struct krt_proto *);
/* krt-set.c */
void krt_set_preconfig(struct krt_proto *);
+/* sync-if.c */
+
+void krt_if_preconfig(struct krt_proto *);
+void krt_if_start(struct krt_proto *);
+void krt_if_shutdown(struct krt_proto *);
+
#endif
diff --git a/sysdep/unix/sync-if.c b/sysdep/unix/sync-if.c
index 76426e7..70a2c0c 100644
--- a/sysdep/unix/sync-if.c
+++ b/sysdep/unix/sync-if.c
@@ -17,12 +17,14 @@
#include "nest/bird.h"
#include "nest/iface.h"
+#include "nest/route.h"
+#include "nest/protocol.h"
#include "lib/timer.h"
+#include "lib/krt.h"
#include "unix.h"
int if_scan_sock;
-int if_scan_period = 60;
static timer *if_scan_timer;
@@ -131,8 +133,9 @@ scan_if(timer *t)
struct ifconf ic;
static int last_ifbuf_size = 4*sizeof(struct ifreq);
int res;
+ struct krt_proto *p = t->data;
- DBG("Scanning interfaces...\n");
+ DBG("It's interface scan time...\n");
for(;;)
{
if (last_ifbuf_size)
@@ -165,6 +168,32 @@ scan_if(timer *t)
DBG("Increased ifconf buffer size to %d\n", last_ifbuf_size);
#endif
}
+ krt_scan_ifaces_done(p);
+}
+
+void
+krt_if_start(struct krt_proto *p)
+{
+ if_scan_timer = tm_new(&root_pool);
+ if_scan_timer->hook = scan_if;
+ if_scan_timer->data = p;
+ if_scan_timer->recurrent = p->ifopt.scan_time;
+ scan_if(if_scan_timer);
+ tm_start(if_scan_timer, p->ifopt.scan_time);
+}
+
+void
+krt_if_preconfig(struct krt_proto *p)
+{
+ p->ifopt.scan_time = 60;
+}
+
+void
+krt_if_shutdown(struct krt_proto *p)
+{
+ tm_stop(if_scan_timer);
+ rfree(if_scan_timer);
+ /* FIXME: What should we do with interfaces? */
}
void
@@ -174,9 +203,4 @@ scan_if_init(void)
DBG("Using socket %d for interface and route scanning\n", if_scan_sock);
if (if_scan_sock < 0)
die("Cannot create scanning socket: %m");
- scan_if(NULL);
- if_scan_timer = tm_new(&root_pool);
- if_scan_timer->hook = scan_if;
- if_scan_timer->recurrent = if_scan_period;
- tm_start(if_scan_timer, if_scan_period);
}
diff --git a/sysdep/unix/sync-rt.c b/sysdep/unix/sync-rt.c
index 169494e..dc79118 100644
--- a/sysdep/unix/sync-rt.c
+++ b/sysdep/unix/sync-rt.c
@@ -30,6 +30,7 @@ krt_start(struct proto *P)
{
struct krt_proto *p = (struct krt_proto *) P;
krt_scan_start(p);
+ krt_if_start(p);
}
void
@@ -37,6 +38,7 @@ krt_shutdown(struct proto *P, int time)
{
struct krt_proto *p = (struct krt_proto *) P;
krt_scan_shutdown(p);
+ krt_if_shutdown(p);
}
void
@@ -50,6 +52,7 @@ krt_preconfig(struct protocol *x)
p->p.shutdown = krt_shutdown;
krt_scan_preconfig(p);
krt_set_preconfig(p);
+ krt_if_preconfig(p);
}
struct protocol proto_unix_kernel = {
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-19 17:22:04 +0200