Merge branch 'master' into int-new

filter/filter.c

@@ -587,7 +587,8 @@ val_format_str(struct f_val v) {
 static struct tbf rl_runtime_err = TBF_DEFAULT_LOG_LIMITS;
 
 #define runtime(fmt, ...) do { \
-    log_rl(&rl_runtime_err, L_ERR "filters, line %d: " fmt, what->lineno, ##__VA_ARGS__); \
+    if (!(f_flags & FF_SILENT)) \
+      log_rl(&rl_runtime_err, L_ERR "filters, line %d: " fmt, what->lineno, ##__VA_ARGS__); \
     res.type = T_RETURN; \
     res.val.i = F_ERROR; \
     return res; \
@@ -903,7 +904,8 @@ interpret(struct f_inst *what)
     break;
   case P('p',','):
     ONEARG;
-    if (what->a2.i == F_NOP || (what->a2.i != F_NONL && what->a1.p))
+    if ((what->a2.i == F_NOP || (what->a2.i != F_NONL && what->a1.p)) &&
+	!(f_flags & FF_SILENT))
       log_commit(*L_INFO, &f_buf);
 
     switch (what->a2.i) {
@@ -1793,7 +1795,8 @@ f_run(struct filter *filter, struct rte **rte, struct ea_list **tmp_attrs, struc
 
 
   if (res.type != T_RETURN) {
-    log_rl(&rl_runtime_err, L_ERR "Filter %s did not return accept nor reject. Make up your mind", filter->name);
+    if (!(f_flags & FF_SILENT))
+      log_rl(&rl_runtime_err, L_ERR "Filter %s did not return accept nor reject. Make up your mind", filter->name);
     return F_ERROR;
   }
   DBG( "done (%u)\n", res.val.i );

filter/filter.h

@@ -208,6 +208,7 @@ struct f_trie
 #define NEW_F_VAL struct f_val * val; val = cfg_alloc(sizeof(struct f_val));
 
 #define FF_FORCE_TMPATTR 1		/* Force all attributes to be temporary */
+#define FF_SILENT 2			/* Silent filter execution */
 
 /* Bird Tests */
 struct f_bt_test_suite {

nest/rt-show.c

@@ -156,7 +156,8 @@ rt_show_net(struct cli *c, net *n, struct rt_show_data *d)
 	       * command may change the export filter and do not update routes.
 	       */
 	      int do_export = (ic > 0) ||
-		(f_run(ec->out_filter, &e, &tmpa, c->show_pool, FF_FORCE_TMPATTR) <= F_ACCEPT);
+		(f_run(ec->out_filter, &e, &tmpa, c->show_pool,
+		       FF_FORCE_TMPATTR | FF_SILENT) <= F_ACCEPT);
 
 	      if (do_export != (d->export_mode == RSEM_EXPORT))
 		goto skip;

nest/rt-table.c

@@ -387,7 +387,8 @@ export_filter_(struct channel *c, rte *rt0, rte **rt_free, ea_list **tmpa, linpo
     }
 
   v = filter && ((filter == FILTER_REJECT) ||
-		 (f_run(filter, &rt, tmpa, pool, FF_FORCE_TMPATTR) > F_ACCEPT));
+		 (f_run(filter, &rt, tmpa, pool,
+			FF_FORCE_TMPATTR | (silent ? FF_SILENT : 0)) > F_ACCEPT));
   if (v)
     {
       if (silent)
@@ -1419,7 +1420,8 @@ rt_examine(rtable *t, net_addr *a, struct proto *p, struct filter *filter)
   ea_list *tmpa = rte_make_tmp_attrs(rt, rte_update_pool);
   int v = p->import_control ? p->import_control(p, &rt, &tmpa, rte_update_pool) : 0;
   if (v == RIC_PROCESS)
-    v = (f_run(filter, &rt, &tmpa, rte_update_pool, FF_FORCE_TMPATTR) <= F_ACCEPT);
+    v = (f_run(filter, &rt, &tmpa, rte_update_pool,
+	       FF_FORCE_TMPATTR | FF_SILENT) <= F_ACCEPT);
 
    /* Discard temporary rte */
   if (rt != n->routes)

proto/bgp/bgp.h

@@ -118,6 +118,7 @@ struct bgp_config {
   unsigned error_delay_time_min;	/* Time to wait after an error is detected */
   unsigned error_delay_time_max;
   unsigned disable_after_error;		/* Disable the protocol when error is detected */
+  u32 disable_after_cease;		/* Disable it when cease is received, bitfield */
 
   char *password;			/* Password used for MD5 authentication */
   int check_link;			/* Use iface link state for liveness detection */

proto/bgp/config.Y

@@ -32,6 +32,12 @@ CF_KEYWORDS(BGP, LOCAL, NEIGHBOR, AS, HOLD, TIME, CONNECT, RETRY, KEEPALIVE,
 
 %type <i32> bgp_afi
 
+CF_KEYWORDS(CEASE, PREFIX, LIMIT, HIT, ADMINISTRATIVE, SHUTDOWN, RESET, PEER,
+	CONFIGURATION, CHANGE, DECONFIGURED, CONNECTION, REJECTED, COLLISION,
+	OUT, OF, RESOURCES)
+
+%type<i> bgp_cease_mask bgp_cease_list bgp_cease_flag
+
 CF_GRAMMAR
 
 CF_ADDTO(proto, bgp_proto '}' )
@@ -74,6 +80,29 @@ bgp_nbr_opts:
  | bgp_nbr_opts AS expr { BGP_CFG->remote_as = $3; }
  ;
 
+bgp_cease_mask:
+   /* true -> all except connection collision */
+   bool { $$ = $1 ? ~(1 << 7) : 0; }
+ | '{' bgp_cease_list '}' { $$ = $2; }
+ ;
+
+bgp_cease_list:
+   bgp_cease_flag
+ | bgp_cease_list ',' bgp_cease_flag { $$ = $1 | $3; }
+ ;
+
+bgp_cease_flag:
+   CEASE			{ $$ = 1 << 0; }
+ | PREFIX LIMIT HIT		{ $$ = 1 << 1; }
+ | ADMINISTRATIVE SHUTDOWN	{ $$ = 1 << 2; }
+ | PEER DECONFIGURED		{ $$ = 1 << 3; }
+ | ADMINISTRATIVE RESET		{ $$ = 1 << 4; }
+ | CONNECTION REJECTED		{ $$ = 1 << 5; }
+ | CONFIGURATION CHANGE		{ $$ = 1 << 6; }
+ | CONNECTION COLLISION		{ $$ = 1 << 7; }
+ | OUT OF RESOURCES		{ $$ = 1 << 8; }
+ ;
+
 bgp_proto:
    bgp_proto_start proto_name '{'
  | bgp_proto proto_item ';'
@@ -117,6 +146,7 @@ bgp_proto:
  | bgp_proto ERROR FORGET TIME expr ';' { BGP_CFG->error_amnesia_time = $5; }
  | bgp_proto ERROR WAIT TIME expr ',' expr ';' { BGP_CFG->error_delay_time_min = $5; BGP_CFG->error_delay_time_max = $7; }
  | bgp_proto DISABLE AFTER ERROR bool ';' { BGP_CFG->disable_after_error = $5; }
+ | bgp_proto DISABLE AFTER CEASE bgp_cease_mask ';' { BGP_CFG->disable_after_cease = $5; }
  | bgp_proto ENABLE ROUTE REFRESH bool ';' { BGP_CFG->enable_refresh = $5; }
  | bgp_proto ENABLE AS4 bool ';' { BGP_CFG->enable_as4 = $4; }
  | bgp_proto ENABLE EXTENDED MESSAGES bool ';' { BGP_CFG->enable_extended_messages = $5; }

proto/bgp/packets.c

@@ -2772,6 +2772,16 @@ bgp_rx_notification(struct bgp_conn *conn, byte *pkt, uint len)
     bgp_update_startup_delay(p);
     bgp_stop(p, 0, NULL, 0);
   }
+  else
+  {
+    uint subcode_bit = 1 << ((subcode <= 8) ? subcode : 0);
+    if (p->cf->disable_after_cease & subcode_bit)
+    {
+      log(L_INFO "%s: Disabled after Cease notification", p->p.name);
+      p->startup_delay = 0;
+      p->p.disabled = 1;
+    }
+  }
 }
 
 static void

sysdep/unix/io.c

@@ -958,10 +958,6 @@ sk_setup(sock *s)
 #endif
   }
 
-  if (s->priority >= 0)
-    if (sk_set_priority(s, s->priority) < 0)
-      return -1;
-
   if (sk_is_ipv4(s))
   {
     if (s->flags & SKF_LADDR_RX)
@@ -1012,6 +1008,11 @@ sk_setup(sock *s)
 	return -1;
   }
 
+  /* Must be after sk_set_tos4() as setting ToS on Linux also mangles priority */
+  if (s->priority >= 0)
+    if (sk_set_priority(s, s->priority) < 0)
+      return -1;
+
   return 0;
 }
 

sysdep/unix/krt.c

@@ -578,7 +578,7 @@ krt_export_net(struct krt_proto *p, net *net, rte **rt_free, ea_list **tmpa)
   if (filter == FILTER_ACCEPT)
     goto accept;
 
-  if (f_run(filter, &rt, tmpa, krt_filter_lp, FF_FORCE_TMPATTR) > F_ACCEPT)
+  if (f_run(filter, &rt, tmpa, krt_filter_lp, FF_FORCE_TMPATTR | FF_SILENT) > F_ACCEPT)
     goto reject;