bgpd: initial batch of evpn lttng tracepoints

Low overhead bgp-evpn TPs have been added which push data out in a binary
format -
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
root@switch:~# lttng list --userspace |grep "frr_bgp:evpn"
      frr_bgp:evpn_mh_nh_rmac_zsend (loglevel: TRACE_DEBUG_LINE (13)) (type: tracepoint)
      frr_bgp:evpn_mh_nh_zsend (loglevel: TRACE_INFO (6)) (type: tracepoint)
      frr_bgp:evpn_mh_nhg_zsend (loglevel: TRACE_INFO (6)) (type: tracepoint)
      frr_bgp:evpn_mh_vtep_zsend (loglevel: TRACE_INFO (6)) (type: tracepoint)
      frr_bgp:evpn_bum_vtep_zsend (loglevel: TRACE_INFO (6)) (type: tracepoint)
      frr_bgp:evpn_mac_ip_zsend (loglevel: TRACE_INFO (6)) (type: tracepoint)
root@switch:~#
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

In addition to the tracepoints a babeltrace python plugin for pretty
printing (binary data is converted into grepable strings). Sample usage -
frr_babeltrace.py trace_path

Sample tracepoint output -
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
1. frr_bgp: evpn_mac_ip_zsend
frr_bgp:evpn_mac_ip_zsend {'action': 'add', 'vni': 1007, 'mac': '00:02:00:00:00:04', 'ip': 'fe80::202:ff:fe00:4', 'vtep': '27.0.0.15', 'esi': '03:44:38:39:ff:ff:01:00:00:02'}

2. frr_bgp: evpn_mh_vtep_zsend
frr_bgp:evpn_mh_vtep_zsend {'action': 'add', 'esi': '03:44:38:39:ff:ff:01:00:00:02', 'vtep': '27.0.0.16'}

3. frr_bgp: evpn_mh_nhg_zsend
frr_bgp:evpn_mh_nhg_zsend {'action': 'add', 'type': 'v4', 'nhg': 74999998, 'esi': '03:44:38:39:ff:ff:01:00:00:02', 'vrf': 85}

4. frr_bgp: evpn_mh_nh_zsend
frr_bgp:evpn_mh_nh_zsend {'nhg': 74999998, 'vtep': '27.0.0.16', 'svi': 93}

5. frr_bgp: evpn_mh_nh_rmac_zsend
frr_bgp:evpn_mh_nh_rmac_zsend {'action': 'add', 'vrf': 85, 'nh': '::ffff:1b00:12', 'rmac': '00:02:00:00:00:50'}
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Signed-off-by: Anuradha Karuppiah <anuradhak@nvidia.com>

1 files changed, 90 insertions, 0 deletions

diff --git a/bgpd/bgp_trace.h b/bgpd/bgp_trace.h
index 303e06c9c9..1b740d69b5 100644
--- a/bgpd/bgp_trace.h
+++ b/bgpd/bgp_trace.h
@@ -35,6 +35,9 @@
 
 #include "bgpd/bgpd.h"
 #include "lib/stream.h"
+#include "bgpd/bgp_evpn_private.h"
+#include "bgpd/bgp_evpn_mh.h"
+
 
 /* clang-format off */
 
@@ -243,6 +246,93 @@ TRACEPOINT_EVENT(
 )
 TRACEPOINT_LOGLEVEL(frr_bgp, bgp_dest_unlock, TRACE_INFO)
 
+TRACEPOINT_EVENT(
+	frr_bgp,
+	evpn_mac_ip_zsend,
+	TP_ARGS(int, add, struct bgpevpn *, vpn,
+		const struct prefix_evpn *, pfx,
+		struct in_addr, vtep, esi_t *, esi),
+	TP_FIELDS(
+		ctf_string(action, add ? "add" : "del")
+		ctf_integer(vni_t, vni, vpn->vni)
+		ctf_array(unsigned char, mac, &pfx->prefix.macip_addr.mac,
+			sizeof(struct ethaddr))
+		ctf_array(unsigned char, ip, &pfx->prefix.macip_addr.ip,
+			sizeof(struct ipaddr))
+		ctf_integer_network_hex(unsigned int, vtep, vtep.s_addr)
+		ctf_array(unsigned char, esi, esi, sizeof(esi_t))
+	)
+)
+TRACEPOINT_LOGLEVEL(frr_bgp, evpn_mac_ip_zsend, TRACE_INFO)
+
+TRACEPOINT_EVENT(
+	frr_bgp,
+	evpn_bum_vtep_zsend,
+	TP_ARGS(int, add, struct bgpevpn *, vpn,
+		const struct prefix_evpn *, pfx),
+	TP_FIELDS(
+		ctf_string(action, add ? "add" : "del")
+		ctf_integer(vni_t, vni, vpn->vni)
+		ctf_integer_network_hex(unsigned int, vtep,
+			pfx->prefix.imet_addr.ip.ipaddr_v4.s_addr)
+	)
+)
+TRACEPOINT_LOGLEVEL(frr_bgp, evpn_bum_vtep_zsend, TRACE_INFO)
+
+TRACEPOINT_EVENT(
+	frr_bgp,
+	evpn_mh_vtep_zsend,
+	TP_ARGS(bool, add, struct bgp_evpn_es *, es,
+		struct bgp_evpn_es_vtep *, es_vtep),
+	TP_FIELDS(
+		ctf_string(action, add ? "add" : "del")
+		ctf_string(esi, es->esi_str)
+		ctf_string(vtep, es_vtep->vtep_str)
+	)
+)
+TRACEPOINT_LOGLEVEL(frr_bgp, evpn_mh_vtep_zsend, TRACE_INFO)
+
+TRACEPOINT_EVENT(
+	frr_bgp,
+	evpn_mh_nhg_zsend,
+	TP_ARGS(bool, add, bool, type_v4, uint32_t, nhg_id,
+		struct bgp_evpn_es_vrf *, es_vrf),
+	TP_FIELDS(
+		ctf_string(action, add ? "add" : "del")
+		ctf_string(type, type_v4 ? "v4" : "v6")
+		ctf_integer(unsigned int, nhg, nhg_id)
+		ctf_string(esi, es_vrf->es->esi_str)
+		ctf_integer(int, vrf, es_vrf->bgp_vrf->vrf_id)
+	)
+)
+TRACEPOINT_LOGLEVEL(frr_bgp, evpn_mh_nhg_zsend, TRACE_INFO)
+
+TRACEPOINT_EVENT(
+	frr_bgp,
+	evpn_mh_nh_zsend,
+	TP_ARGS(uint32_t, nhg_id, struct bgp_evpn_es_vtep *, vtep,
+		struct bgp_evpn_es_vrf *, es_vrf),
+	TP_FIELDS(
+		ctf_integer(unsigned int, nhg, nhg_id)
+		ctf_string(vtep, vtep->vtep_str)
+		ctf_integer(int, svi, es_vrf->bgp_vrf->l3vni_svi_ifindex)
+	)
+)
+TRACEPOINT_LOGLEVEL(frr_bgp, evpn_mh_nh_zsend, TRACE_INFO)
+
+TRACEPOINT_EVENT(
+	frr_bgp,
+	evpn_mh_nh_rmac_zsend,
+	TP_ARGS(bool, add, struct bgp_evpn_nh *, nh),
+	TP_FIELDS(
+		ctf_string(action, add ? "add" : "del")
+		ctf_integer(int, vrf, nh->bgp_vrf->vrf_id)
+		ctf_string(nh, nh->nh_str)
+		ctf_array(unsigned char, rmac, &nh->rmac,
+			sizeof(struct ethaddr))
+	)
+)
+TRACEPOINT_LOGLEVEL(frr_bgp, evpn_nh_rmac_zsend, TRACE_INFO)
 /* clang-format on */
 
 #include <lttng/tracepoint-event.h>