BMP protocol support

Initial implementation of a basic subset of the BMP (BGP Monitoring
Protocol, RFC 7854) from Akamai team. Submitted for further review
and improvement.

1 files changed, 90 insertions, 0 deletions

diff --git a/proto/bmp/config.Y b/proto/bmp/config.Y
new file mode 100644
index 00000000..df7822ea
--- /dev/null
+++ b/proto/bmp/config.Y
@@ -0,0 +1,90 @@
+/*
+ *	BIRD -- The BGP Monitoring Protocol (BMP)
+ *
+ *	(c) 2020 Akamai Technologies, Inc. (Pawel Maslanka, pmaslank@akamai.com)
+ *
+ *	Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+CF_HDR
+
+#include "proto/bmp/bmp.h"
+
+CF_DEFINES
+
+#define BMP_CFG ((struct bmp_config *) this_proto)
+
+CF_DECLS
+
+CF_KEYWORDS(BMP, DESCRIPTION, ENABLED, IN, IP, MONITORING, NAME, PORT,
+  PRE_POLICY, POST_POLICY, RIB, STATION, SYSTEM)
+
+CF_GRAMMAR
+
+proto: bmp_proto '}' ;
+
+bmp_proto_start: proto_start BMP {
+     this_proto = proto_config_new(&proto_bmp, $1);
+     BMP_CFG->disabled = false;
+     BMP_CFG->station_ip = IPA_NONE4;
+     BMP_CFG->station_port = 0;
+     BMP_CFG->sys_descr = "Not defined";
+     BMP_CFG->sys_name = "Not defined";
+     BMP_CFG->monitoring_rib_in_pre_policy = false;
+     BMP_CFG->monitoring_rib_in_post_policy = false;
+     BMP_CFG->monitoring_rib_local = false;
+   }
+ ;
+
+bmp_station_address:
+   /* empty */
+ | bmp_station_address IP ipa {
+     if (!BMP_CFG->disabled)
+       if (ipa_zero($3))
+         cf_error("Invalid BMP monitoring station IP address");
+     BMP_CFG->station_ip = $3;
+   }
+ | bmp_station_address PORT expr {
+     if (($3 < 1) || ($3 > 65535))
+       cf_error("Invalid BMP monitoring station port number");
+     BMP_CFG->station_port = $3;
+   }
+ ;
+
+bmp_proto:
+   bmp_proto_start proto_name '{'
+ | bmp_proto proto_item ';'
+ | bmp_proto ENABLED bool ';' {
+     BMP_CFG->disabled = $3;
+   }
+ | bmp_proto STATION ADDRESS bmp_station_address ';'
+ | bmp_proto SYSTEM DESCRIPTION text ';' {
+     if (!$4 || (strlen($4) == 0))
+       cf_error("String is empty");
+     else if (strlen($4) > 255)
+       cf_error("Invalid string length");
+     BMP_CFG->sys_descr = $4;
+   }
+ | bmp_proto SYSTEM NAME text ';' {
+     if (!$4 || (strlen($4) == 0))
+       cf_error("String is empty");
+     else if (strlen($4) > 255)
+       cf_error("Invalid string length");
+     BMP_CFG->sys_name = $4;
+   }
+ | bmp_proto MONITORING RIB IN PRE_POLICY bool ';' {
+     BMP_CFG->monitoring_rib_in_pre_policy = $6;
+   }
+ | bmp_proto MONITORING RIB IN POST_POLICY bool ';' {
+     BMP_CFG->monitoring_rib_in_post_policy = $6;
+   }
+ | bmp_proto MONITORING RIB LOCAL bool ';' {
+     BMP_CFG->monitoring_rib_local = $5;
+   }
+ | bmp_proto DISABLED bool ';' {
+     BMP_CFG->disabled = $3; }
+ ;
+
+CF_CODE
+
+CF_END