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-rw-r--r--filter/filter.c4
-rw-r--r--lib/birdlib.h8
-rw-r--r--proto/bgp/bgp.h4
-rw-r--r--proto/bgp/packets.c9
-rw-r--r--sysdep/linux/netlink/netlink.c4
-rw-r--r--sysdep/unix/krt.c22
-rw-r--r--sysdep/unix/log.c32
7 files changed, 68 insertions, 15 deletions
diff --git a/filter/filter.c b/filter/filter.c
index 9e75f17..785a087 100644
--- a/filter/filter.c
+++ b/filter/filter.c
@@ -281,8 +281,10 @@ rta_cow(void)
}
}
+static struct rate_limit rl_runtime_err;
+
#define runtime(x) do { \
- log( L_ERR "filters, line %d: %s", what->lineno, x); \
+ log_rl(&rl_runtime_err, L_ERR "filters, line %d: %s", what->lineno, x); \
res.type = T_RETURN; \
res.val.i = F_ERROR; \
return res; \
diff --git a/lib/birdlib.h b/lib/birdlib.h
index 93f25fb..b7cd6b4 100644
--- a/lib/birdlib.h
+++ b/lib/birdlib.h
@@ -9,6 +9,8 @@
#ifndef _BIRD_BIRDLIB_H_
#define _BIRD_BIRDLIB_H_
+#include "timer.h"
+
/* Ugly structure offset handling macros */
#define OFFSETOF(s, i) ((unsigned int)&((s *)0)->i)
@@ -33,8 +35,14 @@
/* Logging and dying */
+struct rate_limit {
+ bird_clock_t timestamp;
+ int count;
+};
+
#define log log_msg
void log_msg(char *msg, ...);
+void log_rl(struct rate_limit *rl, char *msg, ...);
void die(char *msg, ...) NORET;
void bug(char *msg, ...) NORET;
diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h
index b706caf..b0ead9d 100644
--- a/proto/bgp/bgp.h
+++ b/proto/bgp/bgp.h
@@ -139,6 +139,10 @@ void bgp_store_error(struct bgp_proto *p, struct bgp_conn *c, u8 class, u32 code
#define BGP_TRACE(flags, msg, args...) do { if ((p->p.debug & flags) || BGP_FORCE_DEBUG) \
log(L_TRACE "%s: " msg, p->p.name , ## args ); } while(0)
+#define BGP_TRACE_RL(rl, flags, msg, args...) do { if ((p->p.debug & flags) || BGP_FORCE_DEBUG) \
+ log_rl(rl, L_TRACE "%s: " msg, p->p.name , ## args ); } while(0)
+
+
/* attrs.c */
void bgp_attach_attr(struct ea_list **to, struct linpool *pool, unsigned attr, uintptr_t val);
diff --git a/proto/bgp/packets.c b/proto/bgp/packets.c
index 27c0755..fe7472b 100644
--- a/proto/bgp/packets.c
+++ b/proto/bgp/packets.c
@@ -21,6 +21,8 @@
#include "bgp.h"
+static struct rate_limit rl_rcv_update, rl_snd_update;
+
static byte *
bgp_create_notification(struct bgp_conn *conn, byte *buf)
{
@@ -175,7 +177,7 @@ bgp_create_update(struct bgp_conn *conn, byte *buf)
}
if (wd_size || r_size)
{
- BGP_TRACE(D_PACKETS, "Sending UPDATE");
+ BGP_TRACE_RL(&rl_snd_update, D_PACKETS, "Sending UPDATE");
return w;
}
else
@@ -282,7 +284,7 @@ bgp_create_update(struct bgp_conn *conn, byte *buf)
lp_flush(bgp_linpool);
if (size)
{
- BGP_TRACE(D_PACKETS, "Sending UPDATE");
+ BGP_TRACE_RL(&rl_snd_update, D_PACKETS, "Sending UPDATE");
return w;
}
else
@@ -762,7 +764,8 @@ bgp_rx_update(struct bgp_conn *conn, byte *pkt, int len)
byte *withdrawn, *attrs, *nlri;
int withdrawn_len, attr_len, nlri_len;
- BGP_TRACE(D_PACKETS, "Got UPDATE");
+ BGP_TRACE_RL(&rl_rcv_update, D_PACKETS, "Got UPDATE");
+
if (conn->state != BS_ESTABLISHED)
{ bgp_error(conn, 5, 0, NULL, 0); return; }
bgp_start_timer(conn->hold_timer, conn->hold_time);
diff --git a/sysdep/linux/netlink/netlink.c b/sysdep/linux/netlink/netlink.c
index 08817ca..734247e 100644
--- a/sysdep/linux/netlink/netlink.c
+++ b/sysdep/linux/netlink/netlink.c
@@ -129,6 +129,8 @@ nl_get_reply(void)
}
}
+static struct rate_limit rl_netlink_err;
+
static int
nl_error(struct nlmsghdr *h)
{
@@ -143,7 +145,7 @@ nl_error(struct nlmsghdr *h)
e = (struct nlmsgerr *) NLMSG_DATA(h);
ec = -e->error;
if (ec)
- log(L_WARN "Netlink: %s", strerror(ec));
+ log_rl(&rl_netlink_err, L_WARN "Netlink: %s", strerror(ec));
return ec;
}
diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c
index fded9ab..816eb44 100644
--- a/sysdep/unix/krt.c
+++ b/sysdep/unix/krt.c
@@ -183,18 +183,18 @@ struct protocol proto_unix_iface = {
* Tracing of routes
*/
-static void
-krt_trace_in_print(struct krt_proto *p, rte *e, char *msg)
+static inline void
+krt_trace_in(struct krt_proto *p, rte *e, char *msg)
{
- DBG("KRT: %I/%d: %s\n", e->net->n.prefix, e->net->n.pxlen, msg);
- log(L_TRACE "%s: %I/%d: %s", p->p.name, e->net->n.prefix, e->net->n.pxlen, msg);
+ if (p->p.debug & D_PACKETS)
+ log(L_TRACE "%s: %I/%d: %s", p->p.name, e->net->n.prefix, e->net->n.pxlen, msg);
}
static inline void
-krt_trace_in(struct krt_proto *p, rte *e, char *msg)
+krt_trace_in_rl(struct rate_limit *rl, struct krt_proto *p, rte *e, char *msg)
{
if (p->p.debug & D_PACKETS)
- krt_trace_in_print(p, e, msg);
+ log_rl(rl, L_TRACE "%s: %I/%d: %s", p->p.name, e->net->n.prefix, e->net->n.pxlen, msg);
}
/*
@@ -203,6 +203,8 @@ krt_trace_in(struct krt_proto *p, rte *e, char *msg)
#ifdef KRT_ALLOW_LEARN
+static struct rate_limit rl_alien_seen, rl_alien_updated, rl_alien_created, rl_alien_ignored;
+
static inline int
krt_same_key(rte *a, rte *b)
{
@@ -249,20 +251,20 @@ krt_learn_scan(struct krt_proto *p, rte *e)
{
if (krt_uptodate(m, e))
{
- krt_trace_in(p, e, "[alien] seen");
+ krt_trace_in_rl(&rl_alien_seen, p, e, "[alien] seen");
rte_free(e);
m->u.krt.seen = 1;
}
else
{
- krt_trace_in(p, e, "[alien] updated");
+ krt_trace_in_rl(&rl_alien_updated, p, e, "[alien] updated");
*mm = m->next;
rte_free(m);
m = NULL;
}
}
else
- krt_trace_in(p, e, "[alien] created");
+ krt_trace_in_rl(&rl_alien_created, p, e, "[alien] created");
if (!m)
{
e->attrs = rta_lookup(e->attrs);
@@ -516,7 +518,7 @@ krt_got_route(struct krt_proto *p, rte *e)
krt_learn_scan(p, e);
else
{
- krt_trace_in(p, e, "alien route, ignored");
+ krt_trace_in_rl(&rl_alien_ignored, p, e, "alien route, ignored");
rte_free(e);
}
return;
diff --git a/sysdep/unix/log.c b/sysdep/unix/log.c
index 08711e1..eb08309 100644
--- a/sysdep/unix/log.c
+++ b/sysdep/unix/log.c
@@ -30,6 +30,9 @@ static FILE *dbgf = NULL;
static list *current_log_list;
static list init_log_list;
+bird_clock_t rate_limit_time = 5;
+int rate_limit_count = 5;
+
#ifdef HAVE_SYSLOG
#include <sys/syslog.h>
@@ -126,6 +129,35 @@ log_msg(char *msg, ...)
va_end(args);
}
+void
+log_rl(struct rate_limit *rl, char *msg, ...)
+{
+ int class = 1;
+ va_list args;
+
+ bird_clock_t delta = now - rl->timestamp;
+ if ((0 <= delta) && (delta < rate_limit_time))
+ {
+ rl->count++;
+ }
+ else
+ {
+ rl->timestamp = now;
+ rl->count = 1;
+ }
+
+ if (rl->count > rate_limit_count)
+ return;
+
+ va_start(args, msg);
+ if (*msg >= 1 && *msg <= 8)
+ class = *msg++;
+ vlog(class, msg, args);
+ if (rl->count == rate_limit_count)
+ vlog(class, "...", args);
+ va_end(args);
+}
+
/**
* bug - report an internal error
* @msg: a printf-like error message
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-15 08:09:31 +0200