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-rw-r--r--proto/bfd/bfd.c20
-rw-r--r--proto/bfd/bfd.h8
-rw-r--r--proto/bfd/io.c44
-rw-r--r--proto/bfd/io.h12
-rw-r--r--proto/bfd/packets.c44
5 files changed, 88 insertions, 40 deletions
diff --git a/proto/bfd/bfd.c b/proto/bfd/bfd.c
index 6e38102b..3e2af9d5 100644
--- a/proto/bfd/bfd.c
+++ b/proto/bfd/bfd.c
@@ -17,6 +17,9 @@
#define HASH_IP_EQ(a,b) ipa_equal(a,b)
#define HASH_IP_FN(k) ipa_hash(k)
+
+const char *bfd_state_names[] = { "AdminDown", "Down", "Init", "Up" };
+
static inline void bfd_notify_kick(struct bfd_proto *p);
static void
@@ -28,7 +31,7 @@ bfd_session_update_state(struct bfd_session *s, uint state, uint diag)
if (s->loc_state == state)
return;
- //TRACE(D_EVENTS, "Session changed %I %d %d", s->addr, state, diag);
+ TRACE(D_EVENTS, "Session changed %I %d %d", s->addr, state, diag);
debug("STATE %I %d %d %d\n", s->addr, s->loc_state, state, diag);
bfd_lock_sessions(p);
@@ -547,8 +550,6 @@ bfd_start(struct proto *P)
init_list(&p->sock_list);
- birdloop_mask_wakeups(p->loop);
-
init_list(&p->notify_list);
bfd_notify_init(p);
@@ -561,7 +562,7 @@ bfd_start(struct proto *P)
WALK_LIST(n, cf->neigh_list)
bfd_start_neighbor(p, n);
- birdloop_unmask_wakeups(p->loop);
+ birdloop_start(p->loop);
return PS_UP;
}
@@ -572,6 +573,13 @@ bfd_shutdown(struct proto *P)
{
struct bfd_proto *p = (struct bfd_proto *) P;
+ birdloop_stop(p->loop);
+
+ /* FIXME: This is hack */
+ birdloop_enter(p->loop);
+ rfree(p->tpool);
+ birdloop_leave(p->loop);
+
return PS_DOWN;
}
@@ -661,8 +669,8 @@ bfd_show_sessions(struct proto *P)
tx_int = (MAX(s->des_min_tx_int, s->rem_min_rx_int) TO_MS);
timeout = (MAX(s->req_min_rx_int, s->rem_min_tx_int) TO_MS) * s->rem_detect_mult;
- cli_msg(-1013, "%I\t%s\t%d %d\t%u\t%u",
- s->addr, ifname, state, diag, tx_int, timeout);
+ cli_msg(-1013, "%I\t%s\t%s %d\t%u\t%u",
+ s->addr, ifname, bfd_state_names[state], diag, tx_int, timeout);
}
HASH_WALK_END;
diff --git a/proto/bfd/bfd.h b/proto/bfd/bfd.h
index 97ccb507..66c6ed17 100644
--- a/proto/bfd/bfd.h
+++ b/proto/bfd/bfd.h
@@ -27,9 +27,9 @@
#define BFD_ECHO_PORT 3785
#define BFD_MULTI_CTL_PORT 4784
-#define BFD_DEFAULT_MIN_RX_INT (10 MS)
-#define BFD_DEFAULT_MIN_TX_INT (100 MS)
-#define BFD_DEFAULT_IDLE_TX_INT (1 S)
+#define BFD_DEFAULT_MIN_RX_INT (10 _MS)
+#define BFD_DEFAULT_MIN_TX_INT (100 _MS)
+#define BFD_DEFAULT_IDLE_TX_INT (1 _S)
#define BFD_DEFAULT_MULTIPLIER 5
@@ -127,6 +127,7 @@ struct bfd_session
};
+extern const char *bfd_state_names[];
#define BFD_STATE_ADMIN_DOWN 0
#define BFD_STATE_DOWN 1
@@ -146,6 +147,7 @@ struct bfd_session
#define BFD_POLL_TX 1
#define BFD_POLL_RX 2
+#define BFD_FLAGS 0x3f
#define BFD_FLAG_POLL (1 << 5)
#define BFD_FLAG_FINAL (1 << 4)
#define BFD_FLAG_CPI (1 << 3)
diff --git a/proto/bfd/io.c b/proto/bfd/io.c
index c5f2d1b0..2c1f7b03 100644
--- a/proto/bfd/io.c
+++ b/proto/bfd/io.c
@@ -35,6 +35,7 @@ struct birdloop
btime real_time;
u8 use_monotonic_clock;
+ u8 stop_called;
u8 poll_active;
u8 wakeup_masked;
int wakeup_fds[2];
@@ -85,7 +86,7 @@ times_init(struct birdloop *loop)
rv = clock_gettime(CLOCK_MONOTONIC, &ts);
if (rv < 0)
{
- // log(L_WARN "Monotonic clock is missing");
+ log(L_WARN "Monotonic clock is missing");
loop->use_monotonic_clock = 0;
loop->last_time = 0;
@@ -94,13 +95,11 @@ times_init(struct birdloop *loop)
return;
}
- /*
if ((ts.tv_sec < 0) || (((s64) ts.tv_sec) > ((s64) 1 << 40)))
log(L_WARN "Monotonic clock is crazy");
- */
loop->use_monotonic_clock = 1;
- loop->last_time = (ts.tv_sec S) + (ts.tv_nsec / 1000);
+ loop->last_time = ((s64) ts.tv_sec S) + (ts.tv_nsec / 1000);
loop->real_time = 0;
}
@@ -114,12 +113,10 @@ times_update_pri(struct birdloop *loop)
if (rv < 0)
die("clock_gettime: %m");
- btime new_time = (ts.tv_sec S) + (ts.tv_nsec / 1000);
+ btime new_time = ((s64) ts.tv_sec S) + (ts.tv_nsec / 1000);
- /*
if (new_time < loop->last_time)
log(L_ERR "Monotonic clock is broken");
- */
loop->last_time = new_time;
loop->real_time = 0;
@@ -135,15 +132,13 @@ times_update_alt(struct birdloop *loop)
if (rv < 0)
die("gettimeofday: %m");
- btime new_time = (tv.tv_sec S) + tv.tv_usec;
+ btime new_time = ((s64) tv.tv_sec S) + tv.tv_usec;
btime delta = new_time - loop->real_time;
if ((delta < 0) || (delta > (60 S)))
{
- /*
if (loop->real_time)
log(L_WARN "Time jump, delta %d us", (int) delta);
- */
delta = 100 MS;
}
@@ -621,14 +616,31 @@ birdloop_new(pool *p)
timers_init(loop);
sockets_init(loop);
+ return loop;
+}
+void
+birdloop_start(struct birdloop *loop)
+{
int rv = pthread_create(&loop->thread, NULL, birdloop_main, loop);
- if (rv < 0)
- die("pthread_create(): %m");
+ if (rv)
+ die("pthread_create(): %M", rv);
+}
- return loop;
+void
+birdloop_stop(struct birdloop *loop)
+{
+ pthread_mutex_lock(&loop->mutex);
+ loop->stop_called = 1;
+ wakeup_do_kick(loop);
+ pthread_mutex_unlock(&loop->mutex);
+
+ int rv = pthread_join(loop->thread, NULL);
+ if (rv)
+ die("pthread_join(): %M", rv);
}
+
void
birdloop_enter(struct birdloop *loop)
{
@@ -707,12 +719,18 @@ birdloop_main(void *arg)
if (loop->close_scheduled)
sockets_close_fds(loop);
+ if (loop->stop_called)
+ break;
+
if (rv)
sockets_fire(loop);
timers_fire(loop);
}
+ loop->stop_called = 0;
+ pthread_mutex_unlock(&loop->mutex);
+
return NULL;
}
diff --git a/proto/bfd/io.h b/proto/bfd/io.h
index c186ba2b..4f7c678d 100644
--- a/proto/bfd/io.h
+++ b/proto/bfd/io.h
@@ -15,16 +15,6 @@
// #include "lib/timer.h"
-#define S *1000000
-#define MS *1000
-#define US *1
-#define TO_S /1000000
-#define TO_MS /1000
-#define TO_US /1
-
-
-typedef s64 btime;
-
typedef struct timer2
{
resource r;
@@ -89,6 +79,8 @@ void sk_stop(sock *s);
struct birdloop *birdloop_new(pool *p);
+void birdloop_start(struct birdloop *loop);
+void birdloop_stop(struct birdloop *loop);
void birdloop_enter(struct birdloop *loop);
void birdloop_leave(struct birdloop *loop);
void birdloop_mask_wakeups(struct birdloop *loop);
diff --git a/proto/bfd/packets.c b/proto/bfd/packets.c
index 8f7a1f65..0e24114b 100644
--- a/proto/bfd/packets.c
+++ b/proto/bfd/packets.c
@@ -20,8 +20,8 @@ struct bfd_ctl_packet
u32 req_min_echo_rx_int;
};
-#define BFD_BASE_LEN sizeof(struct bfd_ctl_packet)
-
+#define BFD_BASE_LEN sizeof(struct bfd_ctl_packet)
+#define BFD_MAX_LEN 64
static inline u8 bfd_pack_vdiag(u8 version, u8 diag)
{ return (version << 5) | diag; }
@@ -43,11 +43,28 @@ static inline void bfd_pkt_set_state(struct bfd_ctl_packet *pkt, u8 val)
{ pkt->flags = val << 6; }
+char *
+bfd_format_flags(u8 flags, char *buf)
+{
+ char *bp = buf;
+ if (flags & BFD_FLAGS) *bp++ = ' ';
+ if (flags & BFD_FLAG_POLL) *bp++ = 'P';
+ if (flags & BFD_FLAG_FINAL) *bp++ = 'F';
+ if (flags & BFD_FLAG_CPI) *bp++ = 'C';
+ if (flags & BFD_FLAG_AP) *bp++ = 'A';
+ if (flags & BFD_FLAG_DEMAND) *bp++ = 'D';
+ if (flags & BFD_FLAG_MULTIPOINT) *bp++ = 'M';
+ *bp = 0;
+
+ return buf;
+}
+
void
bfd_send_ctl(struct bfd_proto *p, struct bfd_session *s, int final)
{
sock *sk = s->bsock->sk;
struct bfd_ctl_packet *pkt = (struct bfd_ctl_packet *) sk->tbuf;
+ char fb[8];
pkt->vdiag = bfd_pack_vdiag(1, s->loc_diag);
pkt->flags = bfd_pack_flags(s->loc_state, 0);
@@ -65,7 +82,10 @@ bfd_send_ctl(struct bfd_proto *p, struct bfd_session *s, int final)
pkt->flags |= BFD_FLAG_POLL;
if (sk->tbuf != sk->tpos)
- log(L_ERR "%s: old packet was overwritten in TX buffer", p->p.name);
+ log(L_WARN "%s: Old packet overwritten in TX buffer", p->p.name);
+
+ TRACE(D_PACKETS, "Sending CTL to %I [%s%s]", s->addr,
+ bfd_state_names[s->loc_state], bfd_format_flags(pkt->flags, fb));
sk_send_to(sk, pkt->length, s->addr, sk->dport);
}
@@ -79,6 +99,10 @@ bfd_rx_hook(sock *sk, int len)
struct bfd_ctl_packet *pkt = (struct bfd_ctl_packet *) sk->rbuf;
const char *err_dsc = NULL;
uint err_val = 0;
+ char fb[8];
+
+ if ((sk->sport == BFD_CONTROL_PORT) && (sk->ttl < 255))
+ DROP("wrong TTL", sk->ttl);
if (len < BFD_BASE_LEN)
DROP("too short", len);
@@ -93,7 +117,8 @@ bfd_rx_hook(sock *sk, int len)
if (pkt->detect_mult == 0)
DROP("invalid detect mult", 0);
- if (pkt->flags & BFD_FLAG_MULTIPOINT)
+ if ((pkt->flags & BFD_FLAG_MULTIPOINT) ||
+ ((pkt->flags & BFD_FLAG_POLL) && (pkt->flags & BFD_FLAG_FINAL)))
DROP("invalid flags", pkt->flags);
if (pkt->snd_id == 0)
@@ -107,7 +132,7 @@ bfd_rx_hook(sock *sk, int len)
s = bfd_find_session_by_id(p, id);
if (!s)
- DROP("unknown session", id);
+ DROP("unknown session id", id);
}
else
{
@@ -138,11 +163,14 @@ bfd_rx_hook(sock *sk, int len)
s->rem_min_rx_int = ntohl(pkt->req_min_rx_int);
s->rem_detect_mult = pkt->detect_mult;
+ TRACE(D_PACKETS, "CTL received from %I [%s%s]", sk->faddr,
+ bfd_state_names[s->rem_state], bfd_format_flags(pkt->flags, fb));
+
bfd_session_process_ctl(s, pkt->flags, old_tx_int, old_rx_int);
return 1;
drop:
- // log(L_WARN "%s: Bad packet from %I - %s (%u)", p->p.name, sk->faddr, err_dsc, err_val);
+ log(L_REMOTE "%s: Bad packet from %I - %s (%u)", p->p.name, sk->faddr, err_dsc, err_val);
return 1;
}
@@ -161,7 +189,7 @@ bfd_open_rx_sk(struct bfd_proto *p, int multihop)
sk->sport = !multihop ? BFD_CONTROL_PORT : BFD_MULTI_CTL_PORT;
sk->data = p;
- sk->rbsize = 64; // XXX
+ sk->rbsize = BFD_MAX_LEN;
sk->rx_hook = bfd_rx_hook;
sk->err_hook = bfd_err_hook;
@@ -195,7 +223,7 @@ bfd_open_tx_sk(struct bfd_proto *p, ip_addr local, struct iface *ifa)
sk->iface = ifa;
sk->data = p;
- sk->tbsize = 64; // XXX
+ sk->tbsize = BFD_MAX_LEN;
sk->err_hook = bfd_err_hook;
/* TODO: configurable ToS, priority and TTL security */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 08:48:43 +0000