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Diffstat (limited to '')
| -rw-r--r-- | bfdd/bfdd_vty.c | 1059 |
1 files changed, 1059 insertions, 0 deletions
diff --git a/bfdd/bfdd_vty.c b/bfdd/bfdd_vty.c new file mode 100644 index 0000000..21429f0 --- /dev/null +++ b/bfdd/bfdd_vty.c @@ -0,0 +1,1059 @@ +/* + * BFD daemon code + * Copyright (C) 2018 Network Device Education Foundation, Inc. ("NetDEF") + * + * FRR is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * FRR is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with FRR; see the file COPYING. If not, write to the Free + * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + * 02111-1307, USA. + */ + +#include <zebra.h> + +#include "lib/command.h" +#include "lib/json.h" +#include "lib/log.h" +#include "lib/northbound_cli.h" +#include "lib/vty.h" + +#include "bfd.h" + +#ifndef VTYSH_EXTRACT_PL +#include "bfdd/bfdd_vty_clippy.c" +#endif + +/* + * Commands help string definitions. + */ +#define PEER_IPV4_STR "IPv4 peer address\n" +#define PEER_IPV6_STR "IPv6 peer address\n" +#define MHOP_STR "Configure multihop\n" +#define LOCAL_STR "Configure local address\n" +#define LOCAL_IPV4_STR "IPv4 local address\n" +#define LOCAL_IPV6_STR "IPv6 local address\n" +#define LOCAL_INTF_STR "Configure local interface name to use\n" + +/* + * Prototypes + */ +static int bfd_configure_peer(struct bfd_peer_cfg *bpc, bool mhop, + const struct sockaddr_any *peer, + const struct sockaddr_any *local, + const char *ifname, const char *vrfname, + char *ebuf, size_t ebuflen); + +static void _display_peer_header(struct vty *vty, struct bfd_session *bs); +static struct json_object *__display_peer_json(struct bfd_session *bs); +static struct json_object *_peer_json_header(struct bfd_session *bs); +static void _display_peer_json(struct vty *vty, struct bfd_session *bs); +static void _display_peer(struct vty *vty, struct bfd_session *bs); +static void _display_all_peers(struct vty *vty, char *vrfname, bool use_json); +static void _display_peer_iter(struct hash_bucket *hb, void *arg); +static void _display_peer_json_iter(struct hash_bucket *hb, void *arg); +static void _display_peer_counter(struct vty *vty, struct bfd_session *bs); +static struct json_object *__display_peer_counters_json(struct bfd_session *bs); +static void _display_peer_counters_json(struct vty *vty, struct bfd_session *bs); +static void _display_peer_counter_iter(struct hash_bucket *hb, void *arg); +static void _display_peer_counter_json_iter(struct hash_bucket *hb, void *arg); +static void _display_peers_counter(struct vty *vty, char *vrfname, bool use_json); +static void _display_rtt(uint32_t *min, uint32_t *avg, uint32_t *max, + struct bfd_session *bs); + +static struct bfd_session * +_find_peer_or_error(struct vty *vty, int argc, struct cmd_token **argv, + const char *label, const char *peer_str, + const char *local_str, const char *ifname, + const char *vrfname); + + +/* + * Show commands helper functions + */ +static void _display_peer_header(struct vty *vty, struct bfd_session *bs) +{ + char addr_buf[INET6_ADDRSTRLEN]; + + vty_out(vty, "\tpeer %s", + inet_ntop(bs->key.family, &bs->key.peer, addr_buf, + sizeof(addr_buf))); + + if (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH)) + vty_out(vty, " multihop"); + + if (memcmp(&bs->key.local, &zero_addr, sizeof(bs->key.local))) + vty_out(vty, " local-address %s", + inet_ntop(bs->key.family, &bs->key.local, addr_buf, + sizeof(addr_buf))); + + if (bs->key.vrfname[0]) + vty_out(vty, " vrf %s", bs->key.vrfname); + if (bs->key.ifname[0]) + vty_out(vty, " interface %s", bs->key.ifname); + vty_out(vty, "\n"); + + if (bs->pl) + vty_out(vty, "\t\tlabel: %s\n", bs->pl->pl_label); +} + +static void _display_peer(struct vty *vty, struct bfd_session *bs) +{ + char buf[256]; + time_t now; + uint32_t min = 0; + uint32_t avg = 0; + uint32_t max = 0; + + _display_peer_header(vty, bs); + + vty_out(vty, "\t\tID: %u\n", bs->discrs.my_discr); + vty_out(vty, "\t\tRemote ID: %u\n", bs->discrs.remote_discr); + if (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_PASSIVE)) + vty_out(vty, "\t\tPassive mode\n"); + else + vty_out(vty, "\t\tActive mode\n"); + if (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH)) + vty_out(vty, "\t\tMinimum TTL: %d\n", bs->mh_ttl); + + vty_out(vty, "\t\tStatus: "); + switch (bs->ses_state) { + case PTM_BFD_ADM_DOWN: + vty_out(vty, "shutdown\n"); + break; + case PTM_BFD_DOWN: + vty_out(vty, "down\n"); + + now = monotime(NULL); + integer2timestr(now - bs->downtime.tv_sec, buf, sizeof(buf)); + vty_out(vty, "\t\tDowntime: %s\n", buf); + break; + case PTM_BFD_INIT: + vty_out(vty, "init\n"); + break; + case PTM_BFD_UP: + vty_out(vty, "up\n"); + + now = monotime(NULL); + integer2timestr(now - bs->uptime.tv_sec, buf, sizeof(buf)); + vty_out(vty, "\t\tUptime: %s\n", buf); + break; + + default: + vty_out(vty, "unknown\n"); + break; + } + + vty_out(vty, "\t\tDiagnostics: %s\n", diag2str(bs->local_diag)); + vty_out(vty, "\t\tRemote diagnostics: %s\n", diag2str(bs->remote_diag)); + vty_out(vty, "\t\tPeer Type: %s\n", + CHECK_FLAG(bs->flags, BFD_SESS_FLAG_CONFIG) ? "configured" : "dynamic"); + _display_rtt(&min, &avg, &max, bs); + vty_out(vty, "\t\tRTT min/avg/max: %u/%u/%u usec\n", min, avg, max); + + vty_out(vty, "\t\tLocal timers:\n"); + vty_out(vty, "\t\t\tDetect-multiplier: %u\n", + bs->detect_mult); + vty_out(vty, "\t\t\tReceive interval: %ums\n", + bs->timers.required_min_rx / 1000); + vty_out(vty, "\t\t\tTransmission interval: %ums\n", + bs->timers.desired_min_tx / 1000); + if (bs->timers.required_min_echo_rx != 0) + vty_out(vty, "\t\t\tEcho receive interval: %ums\n", + bs->timers.required_min_echo_rx / 1000); + else + vty_out(vty, "\t\t\tEcho receive interval: disabled\n"); + if (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_ECHO)) + vty_out(vty, "\t\t\tEcho transmission interval: %ums\n", + bs->timers.desired_min_echo_tx / 1000); + else + vty_out(vty, "\t\t\tEcho transmission interval: disabled\n"); + + vty_out(vty, "\t\tRemote timers:\n"); + vty_out(vty, "\t\t\tDetect-multiplier: %u\n", + bs->remote_detect_mult); + vty_out(vty, "\t\t\tReceive interval: %ums\n", + bs->remote_timers.required_min_rx / 1000); + vty_out(vty, "\t\t\tTransmission interval: %ums\n", + bs->remote_timers.desired_min_tx / 1000); + if (bs->remote_timers.required_min_echo != 0) + vty_out(vty, "\t\t\tEcho receive interval: %ums\n", + bs->remote_timers.required_min_echo / 1000); + else + vty_out(vty, "\t\t\tEcho receive interval: disabled\n"); + + vty_out(vty, "\n"); +} + +static struct json_object *_peer_json_header(struct bfd_session *bs) +{ + struct json_object *jo = json_object_new_object(); + char addr_buf[INET6_ADDRSTRLEN]; + + if (bs->key.mhop) + json_object_boolean_true_add(jo, "multihop"); + else + json_object_boolean_false_add(jo, "multihop"); + + json_object_string_add(jo, "peer", + inet_ntop(bs->key.family, &bs->key.peer, + addr_buf, sizeof(addr_buf))); + if (memcmp(&bs->key.local, &zero_addr, sizeof(bs->key.local))) + json_object_string_add(jo, "local", + inet_ntop(bs->key.family, &bs->key.local, + addr_buf, sizeof(addr_buf))); + + if (bs->key.vrfname[0]) + json_object_string_add(jo, "vrf", bs->key.vrfname); + if (bs->key.ifname[0]) + json_object_string_add(jo, "interface", bs->key.ifname); + + if (bs->pl) + json_object_string_add(jo, "label", bs->pl->pl_label); + + return jo; +} + +static struct json_object *__display_peer_json(struct bfd_session *bs) +{ + struct json_object *jo = _peer_json_header(bs); + uint32_t min = 0; + uint32_t avg = 0; + uint32_t max = 0; + + json_object_int_add(jo, "id", bs->discrs.my_discr); + json_object_int_add(jo, "remote-id", bs->discrs.remote_discr); + json_object_boolean_add(jo, "passive-mode", + CHECK_FLAG(bs->flags, BFD_SESS_FLAG_PASSIVE)); + if (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH)) + json_object_int_add(jo, "minimum-ttl", bs->mh_ttl); + + switch (bs->ses_state) { + case PTM_BFD_ADM_DOWN: + json_object_string_add(jo, "status", "shutdown"); + break; + case PTM_BFD_DOWN: + json_object_string_add(jo, "status", "down"); + json_object_int_add(jo, "downtime", + monotime(NULL) - bs->downtime.tv_sec); + break; + case PTM_BFD_INIT: + json_object_string_add(jo, "status", "init"); + break; + case PTM_BFD_UP: + json_object_string_add(jo, "status", "up"); + json_object_int_add(jo, "uptime", + monotime(NULL) - bs->uptime.tv_sec); + break; + + default: + json_object_string_add(jo, "status", "unknown"); + break; + } + + json_object_string_add(jo, "diagnostic", diag2str(bs->local_diag)); + json_object_string_add(jo, "remote-diagnostic", + diag2str(bs->remote_diag)); + + json_object_int_add(jo, "receive-interval", + bs->timers.required_min_rx / 1000); + json_object_int_add(jo, "transmit-interval", + bs->timers.desired_min_tx / 1000); + json_object_int_add(jo, "echo-receive-interval", + bs->timers.required_min_echo_rx / 1000); + if (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_ECHO)) + json_object_int_add(jo, "echo-transmit-interval", + bs->timers.desired_min_echo_tx / 1000); + else + json_object_int_add(jo, "echo-transmit-interval", 0); + + json_object_int_add(jo, "detect-multiplier", bs->detect_mult); + + json_object_int_add(jo, "remote-receive-interval", + bs->remote_timers.required_min_rx / 1000); + json_object_int_add(jo, "remote-transmit-interval", + bs->remote_timers.desired_min_tx / 1000); + json_object_int_add(jo, "remote-echo-receive-interval", + bs->remote_timers.required_min_echo / 1000); + json_object_int_add(jo, "remote-detect-multiplier", + bs->remote_detect_mult); + + _display_rtt(&min, &avg, &max, bs); + json_object_int_add(jo, "rtt-min", min); + json_object_int_add(jo, "rtt-avg", avg); + json_object_int_add(jo, "rtt-max", max); + + return jo; +} + +static void _display_peer_json(struct vty *vty, struct bfd_session *bs) +{ + struct json_object *jo = __display_peer_json(bs); + + vty_json(vty, jo); +} + +struct bfd_vrf_tuple { + const char *vrfname; + struct vty *vty; + struct json_object *jo; +}; + +static void _display_peer_iter(struct hash_bucket *hb, void *arg) +{ + struct bfd_vrf_tuple *bvt = (struct bfd_vrf_tuple *)arg; + struct vty *vty; + struct bfd_session *bs = hb->data; + + if (!bvt) + return; + vty = bvt->vty; + + if (bvt->vrfname) { + if (!bs->key.vrfname[0] || + !strmatch(bs->key.vrfname, bvt->vrfname)) + return; + } + _display_peer(vty, bs); +} + +static void _display_peer_json_iter(struct hash_bucket *hb, void *arg) +{ + struct bfd_vrf_tuple *bvt = (struct bfd_vrf_tuple *)arg; + struct json_object *jo, *jon = NULL; + struct bfd_session *bs = hb->data; + + if (!bvt) + return; + jo = bvt->jo; + + if (bvt->vrfname) { + if (!bs->key.vrfname[0] || + !strmatch(bs->key.vrfname, bvt->vrfname)) + return; + } + + jon = __display_peer_json(bs); + if (jon == NULL) { + zlog_warn("%s: not enough memory", __func__); + return; + } + + json_object_array_add(jo, jon); +} + +static void _display_all_peers(struct vty *vty, char *vrfname, bool use_json) +{ + struct json_object *jo; + struct bfd_vrf_tuple bvt = {0}; + + bvt.vrfname = vrfname; + + if (!use_json) { + bvt.vty = vty; + vty_out(vty, "BFD Peers:\n"); + bfd_id_iterate(_display_peer_iter, &bvt); + return; + } + + jo = json_object_new_array(); + bvt.jo = jo; + bfd_id_iterate(_display_peer_json_iter, &bvt); + + vty_json(vty, jo); +} + +static void _display_peer_counter(struct vty *vty, struct bfd_session *bs) +{ + _display_peer_header(vty, bs); + + /* Ask data plane for updated counters. */ + if (bfd_dplane_update_session_counters(bs) == -1) + zlog_debug("%s: failed to update BFD session counters (%s)", + __func__, bs_to_string(bs)); + + vty_out(vty, "\t\tControl packet input: %" PRIu64 " packets\n", + bs->stats.rx_ctrl_pkt); + vty_out(vty, "\t\tControl packet output: %" PRIu64 " packets\n", + bs->stats.tx_ctrl_pkt); + vty_out(vty, "\t\tEcho packet input: %" PRIu64 " packets\n", + bs->stats.rx_echo_pkt); + vty_out(vty, "\t\tEcho packet output: %" PRIu64 " packets\n", + bs->stats.tx_echo_pkt); + vty_out(vty, "\t\tSession up events: %" PRIu64 "\n", + bs->stats.session_up); + vty_out(vty, "\t\tSession down events: %" PRIu64 "\n", + bs->stats.session_down); + vty_out(vty, "\t\tZebra notifications: %" PRIu64 "\n", + bs->stats.znotification); + vty_out(vty, "\n"); +} + +static struct json_object *__display_peer_counters_json(struct bfd_session *bs) +{ + struct json_object *jo = _peer_json_header(bs); + + /* Ask data plane for updated counters. */ + if (bfd_dplane_update_session_counters(bs) == -1) + zlog_debug("%s: failed to update BFD session counters (%s)", + __func__, bs_to_string(bs)); + + json_object_int_add(jo, "control-packet-input", bs->stats.rx_ctrl_pkt); + json_object_int_add(jo, "control-packet-output", bs->stats.tx_ctrl_pkt); + json_object_int_add(jo, "echo-packet-input", bs->stats.rx_echo_pkt); + json_object_int_add(jo, "echo-packet-output", bs->stats.tx_echo_pkt); + json_object_int_add(jo, "session-up", bs->stats.session_up); + json_object_int_add(jo, "session-down", bs->stats.session_down); + json_object_int_add(jo, "zebra-notifications", bs->stats.znotification); + + return jo; +} + +static void _display_peer_counters_json(struct vty *vty, struct bfd_session *bs) +{ + struct json_object *jo = __display_peer_counters_json(bs); + + vty_json(vty, jo); +} + +static void _display_peer_counter_iter(struct hash_bucket *hb, void *arg) +{ + struct bfd_vrf_tuple *bvt = arg; + struct vty *vty; + struct bfd_session *bs = hb->data; + + if (!bvt) + return; + vty = bvt->vty; + + if (bvt->vrfname) { + if (!bs->key.vrfname[0] || + !strmatch(bs->key.vrfname, bvt->vrfname)) + return; + } + + _display_peer_counter(vty, bs); +} + +static void _display_peer_counter_json_iter(struct hash_bucket *hb, void *arg) +{ + struct json_object *jo, *jon = NULL; + struct bfd_session *bs = hb->data; + struct bfd_vrf_tuple *bvt = arg; + + if (!bvt) + return; + jo = bvt->jo; + + if (bvt->vrfname) { + if (!bs->key.vrfname[0] || + !strmatch(bs->key.vrfname, bvt->vrfname)) + return; + } + + jon = __display_peer_counters_json(bs); + if (jon == NULL) { + zlog_warn("%s: not enough memory", __func__); + return; + } + + json_object_array_add(jo, jon); +} + +static void _display_peers_counter(struct vty *vty, char *vrfname, bool use_json) +{ + struct json_object *jo; + struct bfd_vrf_tuple bvt = {0}; + + bvt.vrfname = vrfname; + if (!use_json) { + bvt.vty = vty; + vty_out(vty, "BFD Peers:\n"); + bfd_id_iterate(_display_peer_counter_iter, &bvt); + return; + } + + jo = json_object_new_array(); + bvt.jo = jo; + bfd_id_iterate(_display_peer_counter_json_iter, &bvt); + + vty_json(vty, jo); +} + +static void _clear_peer_counter(struct bfd_session *bs) +{ + /* Clear only pkt stats, intention is not to loose system + events counters */ + bs->stats.rx_ctrl_pkt = 0; + bs->stats.tx_ctrl_pkt = 0; + bs->stats.rx_echo_pkt = 0; + bs->stats.tx_echo_pkt = 0; +} + +static void _display_peer_brief(struct vty *vty, struct bfd_session *bs) +{ + char addr_buf[INET6_ADDRSTRLEN]; + + vty_out(vty, "%-10u", bs->discrs.my_discr); + inet_ntop(bs->key.family, &bs->key.local, addr_buf, sizeof(addr_buf)); + vty_out(vty, " %-40s", addr_buf); + inet_ntop(bs->key.family, &bs->key.peer, addr_buf, sizeof(addr_buf)); + vty_out(vty, " %-40s", addr_buf); + vty_out(vty, "%-15s\n", state_list[bs->ses_state].str); +} + +static void _display_peer_brief_iter(struct hash_bucket *hb, void *arg) +{ + struct bfd_vrf_tuple *bvt = arg; + struct vty *vty; + struct bfd_session *bs = hb->data; + + if (!bvt) + return; + vty = bvt->vty; + + if (bvt->vrfname) { + if (!bs->key.vrfname[0] || + !strmatch(bs->key.vrfname, bvt->vrfname)) + return; + } + + _display_peer_brief(vty, bs); +} + +static void _display_peers_brief(struct vty *vty, const char *vrfname, bool use_json) +{ + struct json_object *jo; + struct bfd_vrf_tuple bvt = {0}; + + bvt.vrfname = vrfname; + + if (!use_json) { + bvt.vty = vty; + + vty_out(vty, "Session count: %lu\n", bfd_get_session_count()); + vty_out(vty, "%-10s", "SessionId"); + vty_out(vty, " %-40s", "LocalAddress"); + vty_out(vty, " %-40s", "PeerAddress"); + vty_out(vty, "%-15s\n", "Status"); + + vty_out(vty, "%-10s", "========="); + vty_out(vty, " %-40s", "============"); + vty_out(vty, " %-40s", "==========="); + vty_out(vty, "%-15s\n", "======"); + + bfd_id_iterate(_display_peer_brief_iter, &bvt); + return; + } + + jo = json_object_new_array(); + bvt.jo = jo; + + bfd_id_iterate(_display_peer_json_iter, &bvt); + + vty_json(vty, jo); +} + +static struct bfd_session * +_find_peer_or_error(struct vty *vty, int argc, struct cmd_token **argv, + const char *label, const char *peer_str, + const char *local_str, const char *ifname, + const char *vrfname) +{ + int idx; + bool mhop; + struct bfd_session *bs = NULL; + struct peer_label *pl; + struct bfd_peer_cfg bpc; + struct sockaddr_any psa, lsa, *lsap; + char errormsg[128]; + + /* Look up the BFD peer. */ + if (label) { + pl = pl_find(label); + if (pl) + bs = pl->pl_bs; + } else if (peer_str) { + strtosa(peer_str, &psa); + if (local_str) { + strtosa(local_str, &lsa); + lsap = &lsa; + } else + lsap = NULL; + + idx = 0; + mhop = argv_find(argv, argc, "multihop", &idx); + + if (bfd_configure_peer(&bpc, mhop, &psa, lsap, ifname, vrfname, + errormsg, sizeof(errormsg)) + != 0) { + vty_out(vty, "%% Invalid peer configuration: %s\n", + errormsg); + return NULL; + } + + bs = bs_peer_find(&bpc); + } else { + vty_out(vty, "%% Invalid arguments\n"); + return NULL; + } + + /* Find peer data. */ + if (bs == NULL) { + vty_out(vty, "%% Unable to find 'peer %s", + label ? label : peer_str); + if (ifname) + vty_out(vty, " interface %s", ifname); + if (local_str) + vty_out(vty, " local-address %s", local_str); + if (vrfname) + vty_out(vty, " vrf %s", vrfname); + vty_out(vty, "'\n"); + + return NULL; + } + + return bs; +} + +void _display_rtt(uint32_t *min, uint32_t *avg, uint32_t *max, + struct bfd_session *bs) +{ +#ifdef BFD_LINUX + uint8_t i; + uint32_t average = 0; + + if (bs->rtt_valid == 0) + return; + + *max = bs->rtt[0]; + *min = 1000; + *avg = 0; + + for (i = 0; i < bs->rtt_valid; i++) { + if (bs->rtt[i] < *min) + *min = bs->rtt[i]; + if (bs->rtt[i] > *max) + *max = bs->rtt[i]; + average += bs->rtt[i]; + } + *avg = average / bs->rtt_valid; + +#endif +} + +/* + * Show commands. + */ +DEFPY(bfd_show_peers, bfd_show_peers_cmd, "show bfd [vrf NAME] peers [json]", + SHOW_STR + "Bidirection Forwarding Detection\n" + VRF_CMD_HELP_STR + "BFD peers status\n" JSON_STR) +{ + char *vrf_name = NULL; + int idx_vrf = 0; + + if (argv_find(argv, argc, "vrf", &idx_vrf)) + vrf_name = argv[idx_vrf + 1]->arg; + + _display_all_peers(vty, vrf_name, use_json(argc, argv)); + + return CMD_SUCCESS; +} + +DEFPY(bfd_show_peer, bfd_show_peer_cmd, + "show bfd [vrf NAME$vrf_name] peer <WORD$label|<A.B.C.D|X:X::X:X>$peer [{multihop|local-address <A.B.C.D|X:X::X:X>$local|interface IFNAME$ifname}]> [json]", + SHOW_STR + "Bidirection Forwarding Detection\n" + VRF_CMD_HELP_STR + "BFD peers status\n" + "Peer label\n" PEER_IPV4_STR PEER_IPV6_STR MHOP_STR LOCAL_STR + LOCAL_IPV4_STR LOCAL_IPV6_STR INTERFACE_STR LOCAL_INTF_STR JSON_STR) +{ + struct bfd_session *bs; + + /* Look up the BFD peer. */ + bs = _find_peer_or_error(vty, argc, argv, label, peer_str, local_str, + ifname, vrf_name); + if (bs == NULL) + return CMD_WARNING_CONFIG_FAILED; + + if (use_json(argc, argv)) { + _display_peer_json(vty, bs); + } else { + vty_out(vty, "BFD Peer:\n"); + _display_peer(vty, bs); + } + + return CMD_SUCCESS; +} + +DEFPY(bfd_show_peer_counters, bfd_show_peer_counters_cmd, + "show bfd [vrf NAME$vrf_name] peer <WORD$label|<A.B.C.D|X:X::X:X>$peer [{multihop|local-address <A.B.C.D|X:X::X:X>$local|interface IFNAME$ifname}]> counters [json]", + SHOW_STR + "Bidirection Forwarding Detection\n" + VRF_CMD_HELP_STR + "BFD peers status\n" + "Peer label\n" + PEER_IPV4_STR + PEER_IPV6_STR + MHOP_STR + LOCAL_STR + LOCAL_IPV4_STR + LOCAL_IPV6_STR + INTERFACE_STR + LOCAL_INTF_STR + "Show BFD peer counters information\n" + JSON_STR) +{ + struct bfd_session *bs; + + /* Look up the BFD peer. */ + bs = _find_peer_or_error(vty, argc, argv, label, peer_str, local_str, + ifname, vrf_name); + if (bs == NULL) + return CMD_WARNING_CONFIG_FAILED; + + if (use_json(argc, argv)) + _display_peer_counters_json(vty, bs); + else + _display_peer_counter(vty, bs); + + return CMD_SUCCESS; +} + +DEFPY(bfd_show_peers_counters, bfd_show_peers_counters_cmd, + "show bfd [vrf NAME] peers counters [json]", + SHOW_STR + "Bidirection Forwarding Detection\n" + VRF_CMD_HELP_STR + "BFD peers status\n" + "Show BFD peer counters information\n" + JSON_STR) +{ + char *vrf_name = NULL; + int idx_vrf = 0; + + if (argv_find(argv, argc, "vrf", &idx_vrf)) + vrf_name = argv[idx_vrf + 1]->arg; + + _display_peers_counter(vty, vrf_name, use_json(argc, argv)); + + return CMD_SUCCESS; +} + +DEFPY(bfd_clear_peer_counters, bfd_clear_peer_counters_cmd, + "clear bfd [vrf <NAME$vrfname>] peer <WORD$label|<A.B.C.D|X:X::X:X>$peer [{multihop|local-address <A.B.C.D|X:X::X:X>$local|interface IFNAME$ifname}]> counters", + SHOW_STR + "Bidirection Forwarding Detection\n" + VRF_CMD_HELP_STR + "BFD peers status\n" + "Peer label\n" + PEER_IPV4_STR + PEER_IPV6_STR + MHOP_STR + LOCAL_STR + LOCAL_IPV4_STR + LOCAL_IPV6_STR + INTERFACE_STR + LOCAL_INTF_STR + "clear BFD peer counters information\n") +{ + struct bfd_session *bs; + + /* Look up the BFD peer. */ + bs = _find_peer_or_error(vty, argc, argv, label, peer_str, local_str, + ifname, vrfname); + if (bs == NULL) + return CMD_WARNING_CONFIG_FAILED; + + _clear_peer_counter(bs); + + return CMD_SUCCESS; +} + +DEFPY(bfd_show_peers_brief, bfd_show_peers_brief_cmd, + "show bfd [vrf <NAME$vrfname>] peers brief [json]", + SHOW_STR + "Bidirection Forwarding Detection\n" + VRF_CMD_HELP_STR + "BFD peers status\n" + "Show BFD peer information in tabular form\n" + JSON_STR) +{ + char *vrf_name = NULL; + int idx_vrf = 0; + + if (argv_find(argv, argc, "vrf", &idx_vrf)) + vrf_name = argv[idx_vrf + 1]->arg; + + _display_peers_brief(vty, vrf_name, use_json(argc, argv)); + + return CMD_SUCCESS; +} + +DEFPY(show_bfd_distributed, show_bfd_distributed_cmd, + "show bfd distributed", + SHOW_STR + "Bidirection Forwarding Detection\n" + "Show BFD data plane (distributed BFD) statistics\n") +{ + bfd_dplane_show_counters(vty); + return CMD_SUCCESS; +} + +DEFPY( + bfd_debug_distributed, bfd_debug_distributed_cmd, + "[no] debug bfd distributed", + NO_STR + DEBUG_STR + "Bidirection Forwarding Detection\n" + "BFD data plane (distributed BFD) debugging\n") +{ + bglobal.debug_dplane = !no; + return CMD_SUCCESS; +} + +DEFPY( + bfd_debug_peer, bfd_debug_peer_cmd, + "[no] debug bfd peer", + NO_STR + DEBUG_STR + "Bidirection Forwarding Detection\n" + "Peer events debugging\n") +{ + bglobal.debug_peer_event = !no; + return CMD_SUCCESS; +} + +DEFPY( + bfd_debug_zebra, bfd_debug_zebra_cmd, + "[no] debug bfd zebra", + NO_STR + DEBUG_STR + "Bidirection Forwarding Detection\n" + "Zebra events debugging\n") +{ + bglobal.debug_zebra = !no; + return CMD_SUCCESS; +} + +DEFPY( + bfd_debug_network, bfd_debug_network_cmd, + "[no] debug bfd network", + NO_STR + DEBUG_STR + "Bidirection Forwarding Detection\n" + "Network layer debugging\n") +{ + bglobal.debug_network = !no; + return CMD_SUCCESS; +} + +/* + * Function definitions. + */ + +/* + * Configuration rules: + * + * Single hop: + * peer + (interface name) + * + * Multi hop: + * peer + local + (optional vrf) + * + * Anything else is misconfiguration. + */ +static int bfd_configure_peer(struct bfd_peer_cfg *bpc, bool mhop, + const struct sockaddr_any *peer, + const struct sockaddr_any *local, + const char *ifname, const char *vrfname, + char *ebuf, size_t ebuflen) +{ + memset(bpc, 0, sizeof(*bpc)); + + /* Defaults */ + bpc->bpc_shutdown = false; + bpc->bpc_detectmultiplier = BPC_DEF_DETECTMULTIPLIER; + bpc->bpc_recvinterval = BPC_DEF_RECEIVEINTERVAL; + bpc->bpc_txinterval = BPC_DEF_TRANSMITINTERVAL; + bpc->bpc_echorecvinterval = BPC_DEF_ECHORECEIVEINTERVAL; + bpc->bpc_echotxinterval = BPC_DEF_ECHOTRANSMITINTERVAL; + bpc->bpc_lastevent = monotime(NULL); + + /* Safety check: when no error buf is provided len must be zero. */ + if (ebuf == NULL) + ebuflen = 0; + + /* Peer is always mandatory. */ + if (peer == NULL) { + snprintf(ebuf, ebuflen, "peer must not be empty"); + return -1; + } + + /* Validate address families. */ + if (peer->sa_sin.sin_family == AF_INET) { + if (local && local->sa_sin.sin_family != AF_INET) { + snprintf(ebuf, ebuflen, + "local is IPv6, but peer is IPv4"); + return -1; + } + + bpc->bpc_ipv4 = true; + } else if (peer->sa_sin.sin_family == AF_INET6) { + if (local && local->sa_sin.sin_family != AF_INET6) { + snprintf(ebuf, ebuflen, + "local is IPv4, but peer is IPv6"); + return -1; + } + + bpc->bpc_ipv4 = false; + } else { + snprintf(ebuf, ebuflen, "invalid peer address family"); + return -1; + } + + /* Copy local and/or peer addresses. */ + if (local) + bpc->bpc_local = *local; + + bpc->bpc_peer = *peer; + bpc->bpc_mhop = mhop; + + /* Handle interface specification configuration. */ + if (ifname) { + bpc->bpc_has_localif = true; + if (strlcpy(bpc->bpc_localif, ifname, sizeof(bpc->bpc_localif)) + > sizeof(bpc->bpc_localif)) { + snprintf(ebuf, ebuflen, "interface name too long"); + return -1; + } + } + + /* Handle VRF configuration. */ + if (vrfname) { + bpc->bpc_has_vrfname = true; + if (strlcpy(bpc->bpc_vrfname, vrfname, sizeof(bpc->bpc_vrfname)) + > sizeof(bpc->bpc_vrfname)) { + snprintf(ebuf, ebuflen, "vrf name too long"); + return -1; + } + } else { + bpc->bpc_has_vrfname = true; + strlcpy(bpc->bpc_vrfname, VRF_DEFAULT_NAME, sizeof(bpc->bpc_vrfname)); + } + + return 0; +} + +DEFUN_NOSH(show_debugging_bfd, + show_debugging_bfd_cmd, + "show debugging [bfd]", + SHOW_STR + DEBUG_STR + "BFD daemon\n") +{ + vty_out(vty, "BFD debugging status:\n"); + if (bglobal.debug_dplane) + vty_out(vty, " Distributed BFD debugging is on.\n"); + if (bglobal.debug_peer_event) + vty_out(vty, " Peer events debugging is on.\n"); + if (bglobal.debug_zebra) + vty_out(vty, " Zebra events debugging is on.\n"); + if (bglobal.debug_network) + vty_out(vty, " Network layer debugging is on.\n"); + + return CMD_SUCCESS; +} + +static int bfdd_write_config(struct vty *vty); +struct cmd_node bfd_node = { + .name = "bfd", + .node = BFD_NODE, + .parent_node = CONFIG_NODE, + .prompt = "%s(config-bfd)# ", + .config_write = bfdd_write_config, +}; + +struct cmd_node bfd_peer_node = { + .name = "bfd peer", + .node = BFD_PEER_NODE, + .parent_node = BFD_NODE, + .prompt = "%s(config-bfd-peer)# ", +}; + +static int bfdd_write_config(struct vty *vty) +{ + struct lyd_node *dnode; + int written = 0; + + if (bglobal.debug_dplane) { + vty_out(vty, "debug bfd distributed\n"); + written = 1; + } + + if (bglobal.debug_peer_event) { + vty_out(vty, "debug bfd peer\n"); + written = 1; + } + + if (bglobal.debug_zebra) { + vty_out(vty, "debug bfd zebra\n"); + written = 1; + } + + if (bglobal.debug_network) { + vty_out(vty, "debug bfd network\n"); + written = 1; + } + + dnode = yang_dnode_get(running_config->dnode, "/frr-bfdd:bfdd"); + if (dnode) { + nb_cli_show_dnode_cmds(vty, dnode, false); + written = 1; + } + + return written; +} + +void bfdd_vty_init(void) +{ + install_element(ENABLE_NODE, &bfd_show_peers_counters_cmd); + install_element(ENABLE_NODE, &bfd_show_peer_counters_cmd); + install_element(ENABLE_NODE, &bfd_clear_peer_counters_cmd); + install_element(ENABLE_NODE, &bfd_show_peers_cmd); + install_element(ENABLE_NODE, &bfd_show_peer_cmd); + install_element(ENABLE_NODE, &bfd_show_peers_brief_cmd); + install_element(ENABLE_NODE, &show_bfd_distributed_cmd); + install_element(ENABLE_NODE, &show_debugging_bfd_cmd); + + install_element(ENABLE_NODE, &bfd_debug_distributed_cmd); + install_element(ENABLE_NODE, &bfd_debug_peer_cmd); + install_element(ENABLE_NODE, &bfd_debug_zebra_cmd); + install_element(ENABLE_NODE, &bfd_debug_network_cmd); + + install_element(CONFIG_NODE, &bfd_debug_distributed_cmd); + install_element(CONFIG_NODE, &bfd_debug_peer_cmd); + install_element(CONFIG_NODE, &bfd_debug_zebra_cmd); + install_element(CONFIG_NODE, &bfd_debug_network_cmd); + + /* Install BFD node and commands. */ + install_node(&bfd_node); + install_default(BFD_NODE); + + /* Install BFD peer node. */ + install_node(&bfd_peer_node); + install_default(BFD_PEER_NODE); + + bfdd_cli_init(); +} |