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bgpd: add basic packet-related tracepoints
Add tracepoints for: - packet pushed to internal rx queue - packet dequeued from rx queue and processed Signed-off-by: Quentin Young <qlyoung@nvidia.com>
This commit is contained in:
Quentin Young
parent
87879a5ecb
commit
d9a03c5736
@ -39,6 +39,7 @@
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#include "bgpd/bgp_errors.h" // for expanded error reference information
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#include "bgpd/bgp_fsm.h" // for BGP_EVENT_ADD, bgp_event
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#include "bgpd/bgp_packet.h" // for bgp_notify_send_with_data, bgp_notify...
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#include "bgpd/bgp_trace.h" // for tracepoints
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#include "bgpd/bgpd.h" // for peer, BGP_MARKER_SIZE, bgp_master, bm
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/* clang-format on */
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@ -235,6 +236,7 @@ static int bgp_process_reads(struct thread *thread)
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stream_set_endp(pkt, pktsize);
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frr_with_mutex(&peer->io_mtx) {
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tracepoint(frr_bgp, packet_read, peer, pkt);
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stream_fifo_push(peer->ibuf, pkt);
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}
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@ -63,6 +63,7 @@
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#include "bgpd/bgp_io.h"
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#include "bgpd/bgp_keepalives.h"
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#include "bgpd/bgp_flowspec.h"
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#include "bgpd/bgp_trace.h"
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DEFINE_HOOK(bgp_packet_dump,
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(struct peer *peer, uint8_t type, bgp_size_t size,
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@ -2366,6 +2367,7 @@ int bgp_process_packet(struct thread *thread)
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*/
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switch (type) {
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case BGP_MSG_OPEN:
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tracepoint(frr_bgp, open_process, peer, size);
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atomic_fetch_add_explicit(&peer->open_in, 1,
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memory_order_relaxed);
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mprc = bgp_open_receive(peer, size);
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@ -2376,6 +2378,7 @@ int bgp_process_packet(struct thread *thread)
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__func__, peer->host);
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break;
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case BGP_MSG_UPDATE:
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tracepoint(frr_bgp, update_process, peer, size);
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atomic_fetch_add_explicit(&peer->update_in, 1,
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memory_order_relaxed);
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peer->readtime = monotime(NULL);
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@ -2387,6 +2390,7 @@ int bgp_process_packet(struct thread *thread)
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__func__, peer->host);
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break;
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case BGP_MSG_NOTIFY:
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tracepoint(frr_bgp, notification_process, peer, size);
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atomic_fetch_add_explicit(&peer->notify_in, 1,
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memory_order_relaxed);
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mprc = bgp_notify_receive(peer, size);
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@ -2397,6 +2401,7 @@ int bgp_process_packet(struct thread *thread)
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__func__, peer->host);
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break;
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case BGP_MSG_KEEPALIVE:
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tracepoint(frr_bgp, keepalive_process, peer, size);
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peer->readtime = monotime(NULL);
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atomic_fetch_add_explicit(&peer->keepalive_in, 1,
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memory_order_relaxed);
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@ -2409,6 +2414,7 @@ int bgp_process_packet(struct thread *thread)
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break;
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case BGP_MSG_ROUTE_REFRESH_NEW:
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case BGP_MSG_ROUTE_REFRESH_OLD:
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tracepoint(frr_bgp, refresh_process, peer, size);
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atomic_fetch_add_explicit(&peer->refresh_in, 1,
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memory_order_relaxed);
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mprc = bgp_route_refresh_receive(peer, size);
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@ -2419,6 +2425,7 @@ int bgp_process_packet(struct thread *thread)
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__func__, peer->host);
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break;
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case BGP_MSG_CAPABILITY:
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tracepoint(frr_bgp, capability_process, peer, size);
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atomic_fetch_add_explicit(&peer->dynamic_cap_in, 1,
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memory_order_relaxed);
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mprc = bgp_capability_receive(peer, size);
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4
bgpd/bgp_trace.c
Normal file
4
bgpd/bgp_trace.c
Normal file
@ -0,0 +1,4 @@
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#define TRACEPOINT_CREATE_PROBES
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#define TRACEPOINT_DEFINE
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#include "bgp_trace.h"
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88
bgpd/bgp_trace.h
Normal file
88
bgpd/bgp_trace.h
Normal file
@ -0,0 +1,88 @@
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/* Tracing for BGP
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*
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* Copyright (C) 2020 NVIDIA Corporation
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* Quentin Young
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#if !defined(_BGP_TRACE_H) || defined(TRACEPOINT_HEADER_MULTI_READ)
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#define _BGP_TRACE_H
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef HAVE_LTTNG
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#undef TRACEPOINT_PROVIDER
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#define TRACEPOINT_PROVIDER frr_bgp
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#undef TRACEPOINT_INCLUDE
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#define TRACEPOINT_INCLUDE "bgpd/bgp_trace.h"
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#include <lttng/tracepoint.h>
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#include "bgpd/bgpd.h"
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#include "lib/stream.h"
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/* clang-format off */
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TRACEPOINT_EVENT_CLASS(
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frr_bgp,
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packet_process,
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TP_ARGS(struct peer *, peer, bgp_size_t, size),
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TP_FIELDS(
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ctf_string(peer, peer->host ? peer->host : "(unknown peer)")
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)
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)
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#define PKT_PROCESS_TRACEPOINT_INSTANCE(name) \
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TRACEPOINT_EVENT_INSTANCE( \
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frr_bgp, packet_process, name, \
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TP_ARGS(struct peer *, peer, bgp_size_t, size)) \
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TRACEPOINT_LOGLEVEL(frr_bgp, name, TRACE_INFO)
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PKT_PROCESS_TRACEPOINT_INSTANCE(open_process)
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PKT_PROCESS_TRACEPOINT_INSTANCE(keepalive_process)
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PKT_PROCESS_TRACEPOINT_INSTANCE(update_process)
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PKT_PROCESS_TRACEPOINT_INSTANCE(notification_process)
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PKT_PROCESS_TRACEPOINT_INSTANCE(capability_process)
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PKT_PROCESS_TRACEPOINT_INSTANCE(refresh_process)
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TRACEPOINT_EVENT(
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frr_bgp,
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packet_read,
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TP_ARGS(struct peer *, peer, struct stream *, pkt),
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TP_FIELDS(
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ctf_string(peer, peer->host ? peer->host : "(unknown peer)")
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ctf_integer(size_t, size, STREAM_READABLE(pkt))
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ctf_sequence_hex(uint8_t, packet, pkt->data, size_t, STREAM_READABLE(pkt))
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)
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)
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#include <lttng/tracepoint-event.h>
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#else /* HAVE_LTTNG */
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#define tracepoint(...)
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#define tracef(...)
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#define tracelog(...)
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#define tracepoint_enabled(...) true
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#endif /* HAVE_LTTNG */
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#endif /* _BGP_TRACE_H */
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@ -104,6 +104,7 @@ bgpd_libbgp_a_SOURCES = \
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bgpd/bgpd.c \
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bgpd/bgp_nb.c \
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bgpd/bgp_nb_config.c \
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bgpd/bgp_trace.c \
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# end
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if ENABLE_BGP_VNC
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@ -178,6 +179,7 @@ noinst_HEADERS += \
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bgpd/bgp_zebra.h \
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bgpd/bgpd.h \
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bgpd/bgp_nb.h \
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bgpd/bgp_trace.h \
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\
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bgpd/rfapi/bgp_rfapi_cfg.h \
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bgpd/rfapi/rfapi_import.h \
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@ -208,8 +210,8 @@ bgpd_bgpd_CFLAGS = $(AM_CFLAGS)
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bgpd_bgp_btoa_CFLAGS = $(AM_CFLAGS)
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# RFPLDADD is set in bgpd/rfp-example/librfp/subdir.am
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bgpd_bgpd_LDADD = bgpd/libbgp.a $(RFPLDADD) lib/libfrr.la $(LIBCAP) $(LIBM)
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bgpd_bgp_btoa_LDADD = bgpd/libbgp.a $(RFPLDADD) lib/libfrr.la $(LIBCAP) $(LIBM)
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bgpd_bgpd_LDADD = bgpd/libbgp.a $(RFPLDADD) lib/libfrr.la $(LIBCAP) $(LIBM) $(UST_LIBS)
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bgpd_bgp_btoa_LDADD = bgpd/libbgp.a $(RFPLDADD) lib/libfrr.la $(LIBCAP) $(LIBM) $(UST_LIBS)
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bgpd_bgpd_snmp_la_SOURCES = bgpd/bgp_snmp.c
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bgpd_bgpd_snmp_la_CFLAGS = $(WERROR) $(SNMP_CFLAGS) -std=gnu99
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