struct bfd_session *bs_peer_find(struct bfd_peer_cfg *bpc)
{
- struct bfd_session *bs;
- struct peer_label *pl;
struct bfd_key key;
- /* Try to find label first. */
- if (bpc->bpc_has_label) {
- pl = pl_find(bpc->bpc_label);
- if (pl != NULL) {
- bs = pl->pl_bs;
- return bs;
- }
- }
-
/* Otherwise fallback to peer/local hash lookup. */
gen_bfd_key(&key, &bpc->bpc_peer, &bpc->bpc_local, bpc->bpc_mhop,
bpc->bpc_localif, bpc->bpc_vrfname);
bs->ifp = ifp;
/* Attempt to use data plane. */
- if (bglobal.bg_use_dplane && bfd_dplane_add_session(bs) == 0) {
- control_notify_config(BCM_NOTIFY_CONFIG_ADD, bs);
+ if (bglobal.bg_use_dplane && bfd_dplane_add_session(bs) == 0)
return 0;
- }
/* Sanity check: don't leak open sockets. */
if (bs->sock != -1) {
/* Start sending control packets with poll bit immediately. */
ptm_bfd_snd(bfd, 0);
- control_notify(bfd, bfd->ses_state);
+ ptm_bfd_notify(bfd, bfd->ses_state);
if (old_state != bfd->ses_state) {
bfd->stats.session_up++;
/* only signal clients when going from up->down state */
if (old_state == PTM_BFD_UP)
- control_notify(bfd, PTM_BFD_DOWN);
+ ptm_bfd_notify(bfd, PTM_BFD_DOWN);
/* Stop echo packet transmission if they are active */
if (CHECK_FLAG(bfd->flags, BFD_SESS_FLAG_ECHO_ACTIVE))
return bs;
}
-int bfd_session_update_label(struct bfd_session *bs, const char *nlabel)
-{
- /* New label treatment:
- * - Check if the label is taken;
- * - Try to allocate the memory for it and register;
- */
- if (bs->pl == NULL) {
- if (pl_find(nlabel) != NULL) {
- /* Someone is already using it. */
- return -1;
- }
-
- pl_new(nlabel, bs);
-
- return 0;
- }
-
- /*
- * Test label change consistency:
- * - Do nothing if it's the same label;
- * - Check if the future label is already taken;
- * - Change label;
- */
- if (strcmp(nlabel, bs->pl->pl_label) == 0)
- return -1;
- if (pl_find(nlabel) != NULL)
- return -1;
-
- strlcpy(bs->pl->pl_label, nlabel, sizeof(bs->pl->pl_label));
- return 0;
-}
-
static void _bfd_session_update(struct bfd_session *bs,
struct bfd_peer_cfg *bpc)
{
bs->peer_profile.min_echo_tx = bs->timers.desired_min_echo_tx;
}
- if (bpc->bpc_has_label)
- bfd_session_update_label(bs, bpc->bpc_label);
-
if (bpc->bpc_cbit)
SET_FLAG(bs->flags, BFD_SESS_FLAG_CBIT);
else
_bfd_session_update(bs, bpc);
- control_notify_config(BCM_NOTIFY_CONFIG_UPDATE, bs);
-
return 0;
}
if (bso != NULL)
bs_observer_del(bso);
- pl_free(bs->pl);
-
XFREE(MTYPE_BFDD_PROFILE, bs->profile_name);
XFREE(MTYPE_BFDD_CONFIG, bs);
}
if (bglobal.debug_peer_event)
zlog_debug("session-new: %s", bs_to_string(bfd));
- control_notify_config(BCM_NOTIFY_CONFIG_ADD, bfd);
-
return bfd;
}
if (bglobal.debug_peer_event)
zlog_debug("%s: %s", __func__, bs_to_string(bs));
- control_notify_config(BCM_NOTIFY_CONFIG_DELETE, bs);
-
bfd_session_free(bs);
return 0;
* When using demand mode we must disable the detection timer
* for lost control packets.
*/
- if (bs->demand_mode) {
- /* Notify watchers about changed timers. */
- control_notify_config(BCM_NOTIFY_CONFIG_UPDATE, bs);
+ if (bs->demand_mode)
return;
- }
/*
* Calculate transmission time based on new timers.
/* Apply new transmission timer immediately. */
ptm_bfd_start_xmt_timer(bs, false);
-
- /* Notify watchers about changed timers. */
- control_notify_config(BCM_NOTIFY_CONFIG_UPDATE, bs);
}
void bs_set_slow_timers(struct bfd_session *bs)
if (bs->bdc) {
bs->ses_state = PTM_BFD_ADM_DOWN;
bfd_dplane_update_session(bs);
- control_notify(bs, bs->ses_state);
+ ptm_bfd_notify(bs, bs->ses_state);
return;
}
/* Change and notify state change. */
bs->ses_state = PTM_BFD_ADM_DOWN;
- control_notify(bs, bs->ses_state);
+ ptm_bfd_notify(bs, bs->ses_state);
/* Don't try to send packets with a disabled session. */
if (bs->sock != -1)
if (bs->bdc) {
bs->ses_state = PTM_BFD_DOWN;
bfd_dplane_update_session(bs);
- control_notify(bs, bs->ses_state);
+ ptm_bfd_notify(bs, bs->ses_state);
return;
}
/* Change and notify state change. */
bs->ses_state = PTM_BFD_DOWN;
- control_notify(bs, bs->ses_state);
+ ptm_bfd_notify(bs, bs->ses_state);
/* Enable timers if non passive, otherwise stop them. */
if (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_PASSIVE)) {
#include "lib/queue.h"
#include "lib/vrf.h"
-#include "bfdctl.h"
-
#ifdef BFD_DEBUG
#define BFDD_JSON_CONV_OPTIONS (JSON_C_TO_STRING_PRETTY)
#else
#define BFDD_JSON_CONV_OPTIONS (0)
#endif
+#ifndef MAXNAMELEN
+#define MAXNAMELEN 32
+#endif
+
+#define BPC_DEF_DETECTMULTIPLIER 3
+#define BPC_DEF_RECEIVEINTERVAL 300 /* milliseconds */
+#define BPC_DEF_TRANSMITINTERVAL 300 /* milliseconds */
+#define BPC_DEF_ECHORECEIVEINTERVAL 50 /* milliseconds */
+#define BPC_DEF_ECHOTRANSMITINTERVAL 50 /* milliseconds */
+
DECLARE_MGROUP(BFDD);
-DECLARE_MTYPE(BFDD_CONTROL);
-DECLARE_MTYPE(BFDD_NOTIFICATION);
+DECLARE_MTYPE(BFDD_CLIENT);
+DECLARE_MTYPE(BFDD_CLIENT_NOTIFICATION);
+
+struct sockaddr_any {
+ union {
+ struct sockaddr_in sa_sin;
+ struct sockaddr_in6 sa_sin6;
+ };
+};
+
+struct bfd_peer_cfg {
+ bool bpc_mhop;
+ bool bpc_ipv4;
+ struct sockaddr_any bpc_peer;
+ struct sockaddr_any bpc_local;
+
+ bool bpc_has_localif;
+ char bpc_localif[MAXNAMELEN + 1];
+
+ bool bpc_has_vrfname;
+ char bpc_vrfname[MAXNAMELEN + 1];
+
+ bool bpc_has_detectmultiplier;
+ uint8_t bpc_detectmultiplier;
+
+ bool bpc_has_recvinterval;
+ uint64_t bpc_recvinterval;
+
+ bool bpc_has_txinterval;
+ uint64_t bpc_txinterval;
-#define BFDD_SOCK_NAME "%s/bfdd.sock", frr_runstatedir
+ bool bpc_has_echorecvinterval;
+ uint64_t bpc_echorecvinterval;
+
+ bool bpc_has_echotxinterval;
+ uint64_t bpc_echotxinterval;
+
+ bool bpc_has_minimum_ttl;
+ uint8_t bpc_minimum_ttl;
+
+ bool bpc_echo;
+ bool bpc_createonly;
+ bool bpc_shutdown;
+
+ bool bpc_cbit;
+ bool bpc_passive;
+
+ bool bpc_has_profile;
+ char bpc_profile[64];
+};
/* bfd Authentication Type. */
#define BFD_AUTH_NULL 0
/** Profile list type. */
TAILQ_HEAD(bfdproflist, bfd_profile);
-/* bfd_session shortcut label forwarding. */
-struct peer_label;
-
struct bfd_config_timers {
uint32_t desired_min_tx;
uint32_t required_min_rx;
uint64_t rtt[BFD_RTT_SAMPLE]; /* RRT in usec for echo to be looped */
};
-struct peer_label {
- TAILQ_ENTRY(peer_label) pl_entry;
-
- struct bfd_session *pl_bs;
- char pl_label[MAXNAMELEN];
-};
-TAILQ_HEAD(pllist, peer_label);
-
struct bfd_diag_str_list {
const char *str;
int type;
#define BFD_DEF_ECHO_PORT 3785
#define BFD_DEF_MHOP_DEST_PORT 4784
-/*
- * control.c
- *
- * Daemon control code to speak with local consumers.
- */
-
-/* See 'bfdctrl.h' for client protocol definitions. */
-
-struct bfd_control_buffer {
- size_t bcb_left;
- size_t bcb_pos;
- union {
- struct bfd_control_msg *bcb_bcm;
- uint8_t *bcb_buf;
- };
-};
-
-struct bfd_control_queue {
- TAILQ_ENTRY(bfd_control_queue) bcq_entry;
-
- struct bfd_control_buffer bcq_bcb;
-};
-TAILQ_HEAD(bcqueue, bfd_control_queue);
-
-struct bfd_notify_peer {
- TAILQ_ENTRY(bfd_notify_peer) bnp_entry;
-
- struct bfd_session *bnp_bs;
-};
-TAILQ_HEAD(bnplist, bfd_notify_peer);
-
-struct bfd_control_socket {
- TAILQ_ENTRY(bfd_control_socket) bcs_entry;
-
- int bcs_sd;
- struct event *bcs_ev;
- struct event *bcs_outev;
- struct bcqueue bcs_bcqueue;
-
- /* Notification data */
- uint64_t bcs_notify;
- struct bnplist bcs_bnplist;
-
- enum bc_msg_version bcs_version;
- enum bc_msg_type bcs_type;
-
- /* Message buffering */
- struct bfd_control_buffer bcs_bin;
- struct bfd_control_buffer *bcs_bout;
-};
-TAILQ_HEAD(bcslist, bfd_control_socket);
-
-int control_init(const char *path);
-void control_shutdown(void);
-int control_notify(struct bfd_session *bs, uint8_t notify_state);
-int control_notify_config(const char *op, struct bfd_session *bs);
-void control_accept(struct event *t);
-
/*
* bfdd.c
struct bfd_global {
int bg_csock;
struct event *bg_csockev;
- struct bcslist bg_bcslist;
-
- struct pllist bg_pllist;
struct obslist bg_obslist;
void socket_close(int *s);
-/*
- * config.c
- *
- * Contains the code related with loading/reloading configuration.
- */
-int parse_config(const char *fname);
-int config_request_add(const char *jsonstr);
-int config_request_del(const char *jsonstr);
-char *config_response(const char *status, const char *error);
-char *config_notify(struct bfd_session *bs);
-char *config_notify_config(const char *op, struct bfd_session *bs);
-
-typedef int (*bpc_handle)(struct bfd_peer_cfg *, void *arg);
-int config_notify_request(struct bfd_control_socket *bcs, const char *jsonstr,
- bpc_handle bh);
-
-struct peer_label *pl_new(const char *label, struct bfd_session *bs);
-struct peer_label *pl_find(const char *label);
-void pl_free(struct peer_label *pl);
-
-
/*
* logging - alias to zebra log
*/
bool is_mhop);
struct bfd_session *bs_peer_find(struct bfd_peer_cfg *bpc);
-int bfd_session_update_label(struct bfd_session *bs, const char *nlabel);
void bfd_set_polling(struct bfd_session *bs);
void bs_state_handler(struct bfd_session *bs, int nstate);
void bs_echo_timer_handler(struct bfd_session *bs);
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*********************************************************************
- * Copyright 2017-2018 Network Device Education Foundation, Inc. ("NetDEF")
- *
- * bfdctl.h: all BFDd control socket protocol definitions.
- *
- * Authors
- * -------
- * Rafael Zalamena <rzalamena@opensourcerouting.org>
- */
-
-#ifndef _BFDCTRL_H_
-#define _BFDCTRL_H_
-
-#include <netinet/in.h>
-
-#include <stdbool.h>
-#include <stdint.h>
-
-/*
- * Auxiliary definitions
- */
-struct sockaddr_any {
- union {
- struct sockaddr_in sa_sin;
- struct sockaddr_in6 sa_sin6;
- };
-};
-
-#ifndef MAXNAMELEN
-#define MAXNAMELEN 32
-#endif
-
-#define BPC_DEF_DETECTMULTIPLIER 3
-#define BPC_DEF_RECEIVEINTERVAL 300 /* milliseconds */
-#define BPC_DEF_TRANSMITINTERVAL 300 /* milliseconds */
-#define BPC_DEF_ECHORECEIVEINTERVAL 50 /* milliseconds */
-#define BPC_DEF_ECHOTRANSMITINTERVAL 50 /* milliseconds */
-
-/* Peer status */
-enum bfd_peer_status {
- BPS_SHUTDOWN = 0, /* == PTM_BFD_ADM_DOWN, "adm-down" */
- BPS_DOWN = 1, /* == PTM_BFD_DOWN, "down" */
- BPS_INIT = 2, /* == PTM_BFD_INIT, "init" */
- BPS_UP = 3, /* == PTM_BFD_UP, "up" */
-};
-
-struct bfd_peer_cfg {
- bool bpc_mhop;
- bool bpc_ipv4;
- struct sockaddr_any bpc_peer;
- struct sockaddr_any bpc_local;
-
- bool bpc_has_label;
- char bpc_label[MAXNAMELEN];
-
- bool bpc_has_localif;
- char bpc_localif[MAXNAMELEN + 1];
-
- bool bpc_has_vrfname;
- char bpc_vrfname[MAXNAMELEN + 1];
-
- bool bpc_has_detectmultiplier;
- uint8_t bpc_detectmultiplier;
-
- bool bpc_has_recvinterval;
- uint64_t bpc_recvinterval;
-
- bool bpc_has_txinterval;
- uint64_t bpc_txinterval;
-
- bool bpc_has_echorecvinterval;
- uint64_t bpc_echorecvinterval;
-
- bool bpc_has_echotxinterval;
- uint64_t bpc_echotxinterval;
-
- bool bpc_has_minimum_ttl;
- uint8_t bpc_minimum_ttl;
-
- bool bpc_echo;
- bool bpc_createonly;
- bool bpc_shutdown;
-
- bool bpc_cbit;
- bool bpc_passive;
-
- bool bpc_has_profile;
- char bpc_profile[64];
-
- /* Status information */
- enum bfd_peer_status bpc_bps;
- uint32_t bpc_id;
- uint32_t bpc_remoteid;
- uint8_t bpc_diag;
- uint8_t bpc_remotediag;
- uint8_t bpc_remote_detectmultiplier;
- uint64_t bpc_remote_recvinterval;
- uint64_t bpc_remote_txinterval;
- uint64_t bpc_remote_echointerval;
- uint64_t bpc_lastevent;
-};
-
-
-/*
- * Protocol definitions
- */
-enum bc_msg_version {
- BMV_VERSION_1 = 1,
-};
-
-enum bc_msg_type {
- BMT_RESPONSE = 1,
- BMT_REQUEST_ADD = 2,
- BMT_REQUEST_DEL = 3,
- BMT_NOTIFY = 4,
- BMT_NOTIFY_ADD = 5,
- BMT_NOTIFY_DEL = 6,
-};
-
-/* Notify flags to use with bcm_notify. */
-#define BCM_NOTIFY_ALL ((uint64_t)-1)
-#define BCM_NOTIFY_PEER_STATE (1ULL << 0)
-#define BCM_NOTIFY_CONFIG (1ULL << 1)
-#define BCM_NOTIFY_NONE 0
-
-/* Response 'status' definitions. */
-#define BCM_RESPONSE_OK "ok"
-#define BCM_RESPONSE_ERROR "error"
-
-/* Notify operation. */
-#define BCM_NOTIFY_PEER_STATUS "status"
-#define BCM_NOTIFY_CONFIG_ADD "add"
-#define BCM_NOTIFY_CONFIG_DELETE "delete"
-#define BCM_NOTIFY_CONFIG_UPDATE "update"
-
-/* Notification special ID. */
-#define BCM_NOTIFY_ID 0
-
-struct bfd_control_msg {
- /* Total length without the header. */
- uint32_t bcm_length;
- /*
- * Message request/response id.
- * All requests will have a correspondent response with the
- * same id.
- */
- uint16_t bcm_id;
- /* Message type. */
- uint8_t bcm_type;
- /* Message version. */
- uint8_t bcm_ver;
- /* Message payload. */
- uint8_t bcm_data[0];
-};
-
-#endif
* FRR related code.
*/
DEFINE_MGROUP(BFDD, "Bidirectional Forwarding Detection Daemon");
-DEFINE_MTYPE(BFDD, BFDD_CONTROL, "control socket memory");
-DEFINE_MTYPE(BFDD, BFDD_NOTIFICATION, "control notification data");
+DEFINE_MTYPE(BFDD, BFDD_CLIENT, "BFD client data");
+DEFINE_MTYPE(BFDD, BFDD_CLIENT_NOTIFICATION, "BFD client notification data");
/* Master of threads. */
struct event_loop *master;
/* Stop receiving message from zebra. */
bfdd_zclient_stop();
- /* Shutdown controller to avoid receiving anymore commands. */
- control_shutdown();
-
/* Shutdown and free all protocol related memory. */
bfd_shutdown();
);
/* clang-format on */
-#define OPTION_CTLSOCK 1001
#define OPTION_DPLANEADDR 2000
static const struct option longopts[] = {
- {"bfdctl", required_argument, NULL, OPTION_CTLSOCK},
{"dplaneaddr", required_argument, NULL, OPTION_DPLANEADDR},
{0}
};
.cap_num_i = 0,
};
- TAILQ_INIT(&bglobal.bg_bcslist);
TAILQ_INIT(&bglobal.bg_obslist);
memcpy(&bglobal.bfdd_privs, &bfdd_privs,
int main(int argc, char *argv[])
{
- char ctl_path[512], dplane_addr[512];
- bool ctlsockused = false;
+ char dplane_addr[512];
int opt;
bglobal.bg_use_dplane = false;
frr_preinit(&bfdd_di, argc, argv);
frr_opt_add("", longopts,
- " --bfdctl Specify bfdd control socket\n"
" --dplaneaddr Specify BFD data plane address\n");
while (true) {
break;
switch (opt) {
- case OPTION_CTLSOCK:
- strlcpy(ctl_path, optarg, sizeof(ctl_path));
- ctlsockused = true;
- break;
case OPTION_DPLANEADDR:
strlcpy(dplane_addr, optarg, sizeof(dplane_addr));
bglobal.bg_use_dplane = true;
}
}
- if (!ctlsockused)
- snprintf(ctl_path, sizeof(ctl_path), BFDD_SOCK_NAME);
-
/* Initialize FRR infrastructure. */
master = frr_init();
- /* Initialize control socket. */
- control_init(ctl_path);
-
/* Initialize BFD data structures. */
bfd_initialize();
/* Initialize zebra connection. */
bfdd_zclient_init(&bglobal.bfdd_privs);
- event_add_read(master, control_accept, NULL, bglobal.bg_csock,
- &bglobal.bg_csockev);
-
/* Install commands. */
bfdd_vty_init();
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)
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;
}
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) {
+ if (peer_str) {
strtosa(peer_str, &psa);
if (local_str) {
strtosa(local_str, &lsa);
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)
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*********************************************************************
- * Copyright 2017-2018 Network Device Education Foundation, Inc. ("NetDEF")
- *
- * config.c: implements the BFD daemon configuration handling.
- *
- * Authors
- * -------
- * Rafael Zalamena <rzalamena@opensourcerouting.org>
- */
-
-#include <zebra.h>
-
-#include <string.h>
-
-#include "lib/json.h"
-
-#include "bfd.h"
-
-DEFINE_MTYPE_STATIC(BFDD, BFDD_LABEL, "long-lived label memory");
-
-/*
- * Definitions
- */
-enum peer_list_type {
- PLT_IPV4,
- PLT_IPV6,
- PLT_LABEL,
-};
-
-
-/*
- * Prototypes
- */
-static int parse_config_json(struct json_object *jo, bpc_handle h, void *arg);
-static int parse_list(struct json_object *jo, enum peer_list_type plt,
- bpc_handle h, void *arg);
-static int parse_peer_config(struct json_object *jo, struct bfd_peer_cfg *bpc);
-static int parse_peer_label_config(struct json_object *jo,
- struct bfd_peer_cfg *bpc);
-
-static int config_add(struct bfd_peer_cfg *bpc, void *arg);
-static int config_del(struct bfd_peer_cfg *bpc, void *arg);
-
-static int json_object_add_peer(struct json_object *jo, struct bfd_session *bs);
-
-
-/*
- * Implementation
- */
-static int config_add(struct bfd_peer_cfg *bpc,
- void *arg __attribute__((unused)))
-{
- return ptm_bfd_sess_new(bpc) == NULL;
-}
-
-static int config_del(struct bfd_peer_cfg *bpc,
- void *arg __attribute__((unused)))
-{
- return ptm_bfd_sess_del(bpc) != 0;
-}
-
-static int parse_config_json(struct json_object *jo, bpc_handle h, void *arg)
-{
- const char *key, *sval;
- struct json_object *jo_val;
- struct json_object_iterator joi, join;
- int error = 0;
-
- JSON_FOREACH (jo, joi, join) {
- key = json_object_iter_peek_name(&joi);
- jo_val = json_object_iter_peek_value(&joi);
-
- if (strcmp(key, "ipv4") == 0) {
- error += parse_list(jo_val, PLT_IPV4, h, arg);
- } else if (strcmp(key, "ipv6") == 0) {
- error += parse_list(jo_val, PLT_IPV6, h, arg);
- } else if (strcmp(key, "label") == 0) {
- error += parse_list(jo_val, PLT_LABEL, h, arg);
- } else {
- sval = json_object_get_string(jo_val);
- zlog_warn("%s:%d invalid configuration: %s", __func__,
- __LINE__, sval);
- error++;
- }
- }
-
- /*
- * Our callers never call free() on json_object and only expect
- * the return value, so lets free() it here.
- */
- json_object_put(jo);
-
- return error;
-}
-
-int parse_config(const char *fname)
-{
- struct json_object *jo;
-
- jo = json_object_from_file(fname);
- if (jo == NULL)
- return -1;
-
- return parse_config_json(jo, config_add, NULL);
-}
-
-static int parse_list(struct json_object *jo, enum peer_list_type plt,
- bpc_handle h, void *arg)
-{
- struct json_object *jo_val;
- struct bfd_peer_cfg bpc;
- int allen, idx;
- int error = 0, result;
-
- allen = json_object_array_length(jo);
- for (idx = 0; idx < allen; idx++) {
- jo_val = json_object_array_get_idx(jo, idx);
-
- /* Set defaults. */
- memset(&bpc, 0, sizeof(bpc));
- bpc.bpc_detectmultiplier = BFD_DEFDETECTMULT;
- bpc.bpc_recvinterval = BFD_DEFREQUIREDMINRX;
- bpc.bpc_txinterval = BFD_DEFDESIREDMINTX;
- bpc.bpc_echorecvinterval = BFD_DEF_REQ_MIN_ECHO_RX;
- bpc.bpc_echotxinterval = BFD_DEF_DES_MIN_ECHO_TX;
-
- switch (plt) {
- case PLT_IPV4:
- zlog_debug("ipv4 peers %d:", allen);
- bpc.bpc_ipv4 = true;
- break;
- case PLT_IPV6:
- zlog_debug("ipv6 peers %d:", allen);
- bpc.bpc_ipv4 = false;
- break;
- case PLT_LABEL:
- zlog_debug("label peers %d:", allen);
- if (parse_peer_label_config(jo_val, &bpc) != 0) {
- error++;
- continue;
- }
- break;
-
- default:
- error++;
- zlog_err("%s:%d: unsupported peer type", __func__,
- __LINE__);
- break;
- }
-
- result = parse_peer_config(jo_val, &bpc);
- error += result;
- if (result == 0)
- error += (h(&bpc, arg) != 0);
- }
-
- return error;
-}
-
-static int parse_peer_config(struct json_object *jo, struct bfd_peer_cfg *bpc)
-{
- const char *key, *sval;
- struct json_object *jo_val;
- struct json_object_iterator joi, join;
- int family_type = (bpc->bpc_ipv4) ? AF_INET : AF_INET6;
- int error = 0;
-
- zlog_debug(" peer: %s", bpc->bpc_ipv4 ? "ipv4" : "ipv6");
-
- JSON_FOREACH (jo, joi, join) {
- key = json_object_iter_peek_name(&joi);
- jo_val = json_object_iter_peek_value(&joi);
-
- if (strcmp(key, "multihop") == 0) {
- bpc->bpc_mhop = json_object_get_boolean(jo_val);
- zlog_debug(" multihop: %s",
- bpc->bpc_mhop ? "true" : "false");
- } else if (strcmp(key, "peer-address") == 0) {
- sval = json_object_get_string(jo_val);
- if (strtosa(sval, &bpc->bpc_peer) != 0
- || bpc->bpc_peer.sa_sin.sin_family != family_type) {
- zlog_debug(
- "%s:%d failed to parse peer-address '%s'",
- __func__, __LINE__, sval);
- error++;
- }
- zlog_debug(" peer-address: %s", sval);
- } else if (strcmp(key, "local-address") == 0) {
- sval = json_object_get_string(jo_val);
- if (strtosa(sval, &bpc->bpc_local) != 0
- || bpc->bpc_local.sa_sin.sin_family
- != family_type) {
- zlog_debug(
- "%s:%d failed to parse local-address '%s'",
- __func__, __LINE__, sval);
- error++;
- }
- zlog_debug(" local-address: %s", sval);
- } else if (strcmp(key, "local-interface") == 0) {
- bpc->bpc_has_localif = true;
- sval = json_object_get_string(jo_val);
- if (strlcpy(bpc->bpc_localif, sval,
- sizeof(bpc->bpc_localif))
- > sizeof(bpc->bpc_localif)) {
- zlog_debug(
- " local-interface: %s (truncated)",
- sval);
- error++;
- } else {
- zlog_debug(" local-interface: %s", sval);
- }
- } else if (strcmp(key, "vrf-name") == 0) {
- bpc->bpc_has_vrfname = true;
- sval = json_object_get_string(jo_val);
- if (strlcpy(bpc->bpc_vrfname, sval,
- sizeof(bpc->bpc_vrfname))
- > sizeof(bpc->bpc_vrfname)) {
- zlog_debug(" vrf-name: %s (truncated)",
- sval);
- error++;
- } else {
- zlog_debug(" vrf-name: %s", sval);
- }
- } else if (strcmp(key, "detect-multiplier") == 0) {
- bpc->bpc_detectmultiplier =
- json_object_get_int64(jo_val);
- bpc->bpc_has_detectmultiplier = true;
- zlog_debug(" detect-multiplier: %u",
- bpc->bpc_detectmultiplier);
- } else if (strcmp(key, "receive-interval") == 0) {
- bpc->bpc_recvinterval = json_object_get_int64(jo_val);
- bpc->bpc_has_recvinterval = true;
- zlog_debug(" receive-interval: %" PRIu64,
- bpc->bpc_recvinterval);
- } else if (strcmp(key, "transmit-interval") == 0) {
- bpc->bpc_txinterval = json_object_get_int64(jo_val);
- bpc->bpc_has_txinterval = true;
- zlog_debug(" transmit-interval: %" PRIu64,
- bpc->bpc_txinterval);
- } else if (strcmp(key, "echo-receive-interval") == 0) {
- bpc->bpc_echorecvinterval = json_object_get_int64(jo_val);
- bpc->bpc_has_echorecvinterval = true;
- zlog_debug(" echo-receive-interval: %" PRIu64,
- bpc->bpc_echorecvinterval);
- } else if (strcmp(key, "echo-transmit-interval") == 0) {
- bpc->bpc_echotxinterval = json_object_get_int64(jo_val);
- bpc->bpc_has_echotxinterval = true;
- zlog_debug(" echo-transmit-interval: %" PRIu64,
- bpc->bpc_echotxinterval);
- } else if (strcmp(key, "create-only") == 0) {
- bpc->bpc_createonly = json_object_get_boolean(jo_val);
- zlog_debug(" create-only: %s",
- bpc->bpc_createonly ? "true" : "false");
- } else if (strcmp(key, "shutdown") == 0) {
- bpc->bpc_shutdown = json_object_get_boolean(jo_val);
- zlog_debug(" shutdown: %s",
- bpc->bpc_shutdown ? "true" : "false");
- } else if (strcmp(key, "echo-mode") == 0) {
- bpc->bpc_echo = json_object_get_boolean(jo_val);
- zlog_debug(" echo-mode: %s",
- bpc->bpc_echo ? "true" : "false");
- } else if (strcmp(key, "label") == 0) {
- bpc->bpc_has_label = true;
- sval = json_object_get_string(jo_val);
- if (strlcpy(bpc->bpc_label, sval,
- sizeof(bpc->bpc_label))
- > sizeof(bpc->bpc_label)) {
- zlog_debug(" label: %s (truncated)",
- sval);
- error++;
- } else {
- zlog_debug(" label: %s", sval);
- }
- } else {
- sval = json_object_get_string(jo_val);
- zlog_warn("%s:%d invalid configuration: '%s: %s'",
- __func__, __LINE__, key, sval);
- error++;
- }
- }
-
- if (bpc->bpc_peer.sa_sin.sin_family == 0) {
- zlog_debug("%s:%d no peer address provided", __func__,
- __LINE__);
- error++;
- }
-
- return error;
-}
-
-static int parse_peer_label_config(struct json_object *jo,
- struct bfd_peer_cfg *bpc)
-{
- struct peer_label *pl;
- struct json_object *label;
- const char *sval;
-
- /* Get label and translate it to BFD daemon key. */
- if (!json_object_object_get_ex(jo, "label", &label))
- return 1;
-
- sval = json_object_get_string(label);
-
- pl = pl_find(sval);
- if (pl == NULL)
- return 1;
-
- zlog_debug(" peer-label: %s", sval);
-
- /* Translate the label into BFD address keys. */
- bs_to_bpc(pl->pl_bs, bpc);
-
- return 0;
-}
-
-
-/*
- * Control socket JSON parsing.
- */
-int config_request_add(const char *jsonstr)
-{
- struct json_object *jo;
-
- jo = json_tokener_parse(jsonstr);
- if (jo == NULL)
- return -1;
-
- return parse_config_json(jo, config_add, NULL);
-}
-
-int config_request_del(const char *jsonstr)
-{
- struct json_object *jo;
-
- jo = json_tokener_parse(jsonstr);
- if (jo == NULL)
- return -1;
-
- return parse_config_json(jo, config_del, NULL);
-}
-
-char *config_response(const char *status, const char *error)
-{
- struct json_object *resp, *jo;
- char *jsonstr;
-
- resp = json_object_new_object();
- if (resp == NULL)
- return NULL;
-
- /* Add 'status' response key. */
- jo = json_object_new_string(status);
- if (jo == NULL) {
- json_object_put(resp);
- return NULL;
- }
-
- json_object_object_add(resp, "status", jo);
-
- /* Add 'error' response key. */
- if (error != NULL) {
- jo = json_object_new_string(error);
- if (jo == NULL) {
- json_object_put(resp);
- return NULL;
- }
-
- json_object_object_add(resp, "error", jo);
- }
-
- /* Generate JSON response. */
- jsonstr = XSTRDUP(
- MTYPE_BFDD_NOTIFICATION,
- json_object_to_json_string_ext(resp, BFDD_JSON_CONV_OPTIONS));
- json_object_put(resp);
-
- return jsonstr;
-}
-
-char *config_notify(struct bfd_session *bs)
-{
- struct json_object *resp;
- char *jsonstr;
- time_t now;
-
- resp = json_object_new_object();
- if (resp == NULL)
- return NULL;
-
- json_object_string_add(resp, "op", BCM_NOTIFY_PEER_STATUS);
-
- json_object_add_peer(resp, bs);
-
- /* Add status information */
- json_object_int_add(resp, "id", bs->discrs.my_discr);
- json_object_int_add(resp, "remote-id", bs->discrs.my_discr);
-
- switch (bs->ses_state) {
- case PTM_BFD_UP:
- json_object_string_add(resp, "state", "up");
-
- now = monotime(NULL);
- json_object_int_add(resp, "uptime", now - bs->uptime.tv_sec);
- break;
- case PTM_BFD_ADM_DOWN:
- json_object_string_add(resp, "state", "adm-down");
- break;
- case PTM_BFD_DOWN:
- json_object_string_add(resp, "state", "down");
-
- now = monotime(NULL);
- json_object_int_add(resp, "downtime",
- now - bs->downtime.tv_sec);
- break;
- case PTM_BFD_INIT:
- json_object_string_add(resp, "state", "init");
- break;
-
- default:
- json_object_string_add(resp, "state", "unknown");
- break;
- }
-
- json_object_int_add(resp, "diagnostics", bs->local_diag);
- json_object_int_add(resp, "remote-diagnostics", bs->remote_diag);
-
- /* Generate JSON response. */
- jsonstr = XSTRDUP(
- MTYPE_BFDD_NOTIFICATION,
- json_object_to_json_string_ext(resp, BFDD_JSON_CONV_OPTIONS));
- json_object_put(resp);
-
- return jsonstr;
-}
-
-char *config_notify_config(const char *op, struct bfd_session *bs)
-{
- struct json_object *resp;
- char *jsonstr;
-
- resp = json_object_new_object();
- if (resp == NULL)
- return NULL;
-
- json_object_string_add(resp, "op", op);
-
- json_object_add_peer(resp, bs);
-
- /* On peer deletion we don't need to add any additional information. */
- if (strcmp(op, BCM_NOTIFY_CONFIG_DELETE) == 0)
- goto skip_config;
-
- json_object_int_add(resp, "detect-multiplier", bs->detect_mult);
- json_object_int_add(resp, "receive-interval",
- bs->timers.required_min_rx / 1000);
- json_object_int_add(resp, "transmit-interval",
- bs->timers.desired_min_tx / 1000);
- json_object_int_add(resp, "echo-receive-interval",
- bs->timers.required_min_echo_rx / 1000);
- json_object_int_add(resp, "echo-transmit-interval",
- bs->timers.desired_min_echo_tx / 1000);
-
- json_object_int_add(resp, "remote-detect-multiplier",
- bs->remote_detect_mult);
- json_object_int_add(resp, "remote-receive-interval",
- bs->remote_timers.required_min_rx / 1000);
- json_object_int_add(resp, "remote-transmit-interval",
- bs->remote_timers.desired_min_tx / 1000);
- json_object_int_add(resp, "remote-echo-receive-interval",
- bs->remote_timers.required_min_echo / 1000);
-
- if (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_ECHO))
- json_object_boolean_true_add(resp, "echo-mode");
- else
- json_object_boolean_false_add(resp, "echo-mode");
-
- if (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_SHUTDOWN))
- json_object_boolean_true_add(resp, "shutdown");
- else
- json_object_boolean_false_add(resp, "shutdown");
-
-skip_config:
- /* Generate JSON response. */
- jsonstr = XSTRDUP(
- MTYPE_BFDD_NOTIFICATION,
- json_object_to_json_string_ext(resp, BFDD_JSON_CONV_OPTIONS));
- json_object_put(resp);
-
- return jsonstr;
-}
-
-int config_notify_request(struct bfd_control_socket *bcs, const char *jsonstr,
- bpc_handle bh)
-{
- struct json_object *jo;
-
- jo = json_tokener_parse(jsonstr);
- if (jo == NULL)
- return -1;
-
- return parse_config_json(jo, bh, bcs);
-}
-
-static int json_object_add_peer(struct json_object *jo, struct bfd_session *bs)
-{
- char addr_buf[INET6_ADDRSTRLEN];
-
- /* Add peer 'key' information. */
- if (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_IPV6))
- json_object_boolean_true_add(jo, "ipv6");
- else
- json_object_boolean_false_add(jo, "ipv6");
-
- if (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_MH)) {
- json_object_boolean_true_add(jo, "multihop");
- json_object_string_add(jo, "peer-address",
- inet_ntop(bs->key.family, &bs->key.peer,
- addr_buf, sizeof(addr_buf)));
- json_object_string_add(jo, "local-address",
- inet_ntop(bs->key.family, &bs->key.local,
- addr_buf, sizeof(addr_buf)));
- if (bs->key.vrfname[0])
- json_object_string_add(jo, "vrf-name", bs->key.vrfname);
- } else {
- json_object_boolean_false_add(jo, "multihop");
- json_object_string_add(jo, "peer-address",
- 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-address",
- inet_ntop(bs->key.family, &bs->key.local,
- addr_buf, sizeof(addr_buf)));
- if (bs->key.ifname[0])
- json_object_string_add(jo, "local-interface",
- bs->key.ifname);
- }
-
- if (bs->pl)
- json_object_string_add(jo, "label", bs->pl->pl_label);
-
- return 0;
-}
-
-
-/*
- * Label handling
- */
-struct peer_label *pl_find(const char *label)
-{
- struct peer_label *pl;
-
- TAILQ_FOREACH (pl, &bglobal.bg_pllist, pl_entry) {
- if (strcmp(pl->pl_label, label) != 0)
- continue;
-
- return pl;
- }
-
- return NULL;
-}
-
-struct peer_label *pl_new(const char *label, struct bfd_session *bs)
-{
- struct peer_label *pl;
-
- pl = XCALLOC(MTYPE_BFDD_LABEL, sizeof(*pl));
-
- if (strlcpy(pl->pl_label, label, sizeof(pl->pl_label))
- > sizeof(pl->pl_label))
- zlog_warn("%s:%d: label was truncated", __func__, __LINE__);
-
- pl->pl_bs = bs;
- bs->pl = pl;
-
- TAILQ_INSERT_HEAD(&bglobal.bg_pllist, pl, pl_entry);
-
- return pl;
-}
-
-void pl_free(struct peer_label *pl)
-{
- if (pl == NULL)
- return;
-
- /* Remove the pointer back. */
- pl->pl_bs->pl = NULL;
-
- TAILQ_REMOVE(&bglobal.bg_pllist, pl, pl_entry);
- XFREE(MTYPE_BFDD_LABEL, pl);
-}
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*********************************************************************
- * Copyright 2017-2018 Network Device Education Foundation, Inc. ("NetDEF")
- *
- * control.c: implements the BFD daemon control socket. It will be used
- * to talk with clients daemon/scripts/consumers.
- *
- * Authors
- * -------
- * Rafael Zalamena <rzalamena@opensourcerouting.org>
- */
-
-#include <zebra.h>
-
-#include <fcntl.h>
-#include <sys/stat.h>
-
-#include <sys/un.h>
-
-#include "bfd.h"
-
-/*
- * Prototypes
- */
-static int sock_set_nonblock(int fd);
-struct bfd_control_queue *control_queue_new(struct bfd_control_socket *bcs);
-static void control_queue_free(struct bfd_control_socket *bcs,
- struct bfd_control_queue *bcq);
-static int control_queue_dequeue(struct bfd_control_socket *bcs);
-static int control_queue_enqueue(struct bfd_control_socket *bcs,
- struct bfd_control_msg *bcm);
-static int control_queue_enqueue_first(struct bfd_control_socket *bcs,
- struct bfd_control_msg *bcm);
-struct bfd_notify_peer *control_notifypeer_new(struct bfd_control_socket *bcs,
- struct bfd_session *bs);
-static void control_notifypeer_free(struct bfd_control_socket *bcs,
- struct bfd_notify_peer *bnp);
-struct bfd_notify_peer *control_notifypeer_find(struct bfd_control_socket *bcs,
- struct bfd_session *bs);
-
-
-struct bfd_control_socket *control_new(int sd);
-static void control_free(struct bfd_control_socket *bcs);
-static void control_reset_buf(struct bfd_control_buffer *bcb);
-static void control_read(struct event *t);
-static void control_write(struct event *t);
-
-static void control_handle_request_add(struct bfd_control_socket *bcs,
- struct bfd_control_msg *bcm);
-static void control_handle_request_del(struct bfd_control_socket *bcs,
- struct bfd_control_msg *bcm);
-static int notify_add_cb(struct bfd_peer_cfg *bpc, void *arg);
-static int notify_del_cb(struct bfd_peer_cfg *bpc, void *arg);
-static void control_handle_notify_add(struct bfd_control_socket *bcs,
- struct bfd_control_msg *bcm);
-static void control_handle_notify_del(struct bfd_control_socket *bcs,
- struct bfd_control_msg *bcm);
-static void _control_handle_notify(struct hash_bucket *hb, void *arg);
-static void control_handle_notify(struct bfd_control_socket *bcs,
- struct bfd_control_msg *bcm);
-static void control_response(struct bfd_control_socket *bcs, uint16_t id,
- const char *status, const char *error);
-
-static void _control_notify_config(struct bfd_control_socket *bcs,
- const char *op, struct bfd_session *bs);
-static void _control_notify(struct bfd_control_socket *bcs,
- struct bfd_session *bs);
-
-
-/*
- * Functions
- */
-static int sock_set_nonblock(int fd)
-{
- int flags;
-
- flags = fcntl(fd, F_GETFL, 0);
- if (flags == -1) {
- zlog_warn("%s: fcntl F_GETFL: %s", __func__, strerror(errno));
- return -1;
- }
-
- flags |= O_NONBLOCK;
- if (fcntl(fd, F_SETFL, flags) == -1) {
- zlog_warn("%s: fcntl F_SETFL: %s", __func__, strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
-int control_init(const char *path)
-{
- int sd;
- mode_t umval;
- struct sockaddr_un sun_ = {
- .sun_family = AF_UNIX,
- };
-
- assert(path);
-
- strlcpy(sun_.sun_path, path, sizeof(sun_.sun_path));
-
- /* Remove previously created sockets. */
- unlink(sun_.sun_path);
-
- sd = socket(AF_UNIX, SOCK_STREAM, PF_UNSPEC);
- if (sd == -1) {
- zlog_err("%s: socket: %s", __func__, strerror(errno));
- return -1;
- }
-
- umval = umask(0);
- if (bind(sd, (struct sockaddr *)&sun_, sizeof(sun_)) == -1) {
- zlog_err("%s: bind: %s", __func__, strerror(errno));
- close(sd);
- return -1;
- }
- umask(umval);
-
- if (listen(sd, SOMAXCONN) == -1) {
- zlog_err("%s: listen: %s", __func__, strerror(errno));
- close(sd);
- return -1;
- }
-
- sock_set_nonblock(sd);
-
- bglobal.bg_csock = sd;
-
- return 0;
-}
-
-void control_shutdown(void)
-{
- struct bfd_control_socket *bcs;
-
- event_cancel(&bglobal.bg_csockev);
-
- socket_close(&bglobal.bg_csock);
-
- while (!TAILQ_EMPTY(&bglobal.bg_bcslist)) {
- bcs = TAILQ_FIRST(&bglobal.bg_bcslist);
- control_free(bcs);
- }
-}
-
-void control_accept(struct event *t)
-{
- int csock, sd = EVENT_FD(t);
-
- csock = accept(sd, NULL, 0);
- if (csock == -1) {
- zlog_warn("%s: accept: %s", __func__, strerror(errno));
- return;
- }
-
- control_new(csock);
-
- event_add_read(master, control_accept, NULL, sd, &bglobal.bg_csockev);
-}
-
-
-/*
- * Client handling
- */
-struct bfd_control_socket *control_new(int sd)
-{
- struct bfd_control_socket *bcs;
-
- bcs = XCALLOC(MTYPE_BFDD_CONTROL, sizeof(*bcs));
-
- /* Disable notifications by default. */
- bcs->bcs_notify = 0;
-
- bcs->bcs_sd = sd;
- event_add_read(master, control_read, bcs, sd, &bcs->bcs_ev);
-
- TAILQ_INIT(&bcs->bcs_bcqueue);
- TAILQ_INIT(&bcs->bcs_bnplist);
- TAILQ_INSERT_TAIL(&bglobal.bg_bcslist, bcs, bcs_entry);
-
- return bcs;
-}
-
-static void control_free(struct bfd_control_socket *bcs)
-{
- struct bfd_control_queue *bcq;
- struct bfd_notify_peer *bnp;
-
- event_cancel(&(bcs->bcs_ev));
- event_cancel(&(bcs->bcs_outev));
-
- close(bcs->bcs_sd);
-
- TAILQ_REMOVE(&bglobal.bg_bcslist, bcs, bcs_entry);
-
- /* Empty output queue. */
- while (!TAILQ_EMPTY(&bcs->bcs_bcqueue)) {
- bcq = TAILQ_FIRST(&bcs->bcs_bcqueue);
- control_queue_free(bcs, bcq);
- }
-
- /* Empty notification list. */
- while (!TAILQ_EMPTY(&bcs->bcs_bnplist)) {
- bnp = TAILQ_FIRST(&bcs->bcs_bnplist);
- control_notifypeer_free(bcs, bnp);
- }
-
- control_reset_buf(&bcs->bcs_bin);
- XFREE(MTYPE_BFDD_CONTROL, bcs);
-}
-
-struct bfd_notify_peer *control_notifypeer_new(struct bfd_control_socket *bcs,
- struct bfd_session *bs)
-{
- struct bfd_notify_peer *bnp;
-
- bnp = control_notifypeer_find(bcs, bs);
- if (bnp)
- return bnp;
-
- bnp = XCALLOC(MTYPE_BFDD_CONTROL, sizeof(*bnp));
-
- TAILQ_INSERT_TAIL(&bcs->bcs_bnplist, bnp, bnp_entry);
- bnp->bnp_bs = bs;
- bs->refcount++;
-
- return bnp;
-}
-
-static void control_notifypeer_free(struct bfd_control_socket *bcs,
- struct bfd_notify_peer *bnp)
-{
- TAILQ_REMOVE(&bcs->bcs_bnplist, bnp, bnp_entry);
- bnp->bnp_bs->refcount--;
- XFREE(MTYPE_BFDD_CONTROL, bnp);
-}
-
-struct bfd_notify_peer *control_notifypeer_find(struct bfd_control_socket *bcs,
- struct bfd_session *bs)
-{
- struct bfd_notify_peer *bnp;
-
- TAILQ_FOREACH (bnp, &bcs->bcs_bnplist, bnp_entry) {
- if (bnp->bnp_bs == bs)
- return bnp;
- }
-
- return NULL;
-}
-
-struct bfd_control_queue *control_queue_new(struct bfd_control_socket *bcs)
-{
- struct bfd_control_queue *bcq;
-
- bcq = XCALLOC(MTYPE_BFDD_NOTIFICATION, sizeof(*bcq));
-
- control_reset_buf(&bcq->bcq_bcb);
- TAILQ_INSERT_TAIL(&bcs->bcs_bcqueue, bcq, bcq_entry);
-
- return bcq;
-}
-
-static void control_queue_free(struct bfd_control_socket *bcs,
- struct bfd_control_queue *bcq)
-{
- control_reset_buf(&bcq->bcq_bcb);
- TAILQ_REMOVE(&bcs->bcs_bcqueue, bcq, bcq_entry);
- XFREE(MTYPE_BFDD_NOTIFICATION, bcq);
-}
-
-static int control_queue_dequeue(struct bfd_control_socket *bcs)
-{
- struct bfd_control_queue *bcq;
-
- /* List is empty, nothing to do. */
- if (TAILQ_EMPTY(&bcs->bcs_bcqueue))
- goto empty_list;
-
- bcq = TAILQ_FIRST(&bcs->bcs_bcqueue);
- control_queue_free(bcs, bcq);
-
- /* Get the next buffer to send. */
- if (TAILQ_EMPTY(&bcs->bcs_bcqueue))
- goto empty_list;
-
- bcq = TAILQ_FIRST(&bcs->bcs_bcqueue);
- bcs->bcs_bout = &bcq->bcq_bcb;
-
- bcs->bcs_outev = NULL;
- event_add_write(master, control_write, bcs, bcs->bcs_sd,
- &bcs->bcs_outev);
-
- return 1;
-
-empty_list:
- event_cancel(&(bcs->bcs_outev));
- bcs->bcs_bout = NULL;
- return 0;
-}
-
-static int control_queue_enqueue(struct bfd_control_socket *bcs,
- struct bfd_control_msg *bcm)
-{
- struct bfd_control_queue *bcq;
- struct bfd_control_buffer *bcb;
-
- bcq = control_queue_new(bcs);
-
- bcb = &bcq->bcq_bcb;
- bcb->bcb_left = sizeof(struct bfd_control_msg) + ntohl(bcm->bcm_length);
- bcb->bcb_pos = 0;
- bcb->bcb_bcm = bcm;
-
- /* If this is the first item, then dequeue and start using it. */
- if (bcs->bcs_bout == NULL) {
- bcs->bcs_bout = bcb;
-
- /* New messages, active write events. */
- event_add_write(master, control_write, bcs, bcs->bcs_sd,
- &bcs->bcs_outev);
- }
-
- return 0;
-}
-
-static int control_queue_enqueue_first(struct bfd_control_socket *bcs,
- struct bfd_control_msg *bcm)
-{
- struct bfd_control_queue *bcq, *bcqn;
- struct bfd_control_buffer *bcb;
-
- /* Enqueue it somewhere. */
- if (control_queue_enqueue(bcs, bcm) == -1)
- return -1;
-
- /*
- * The item is either the first or the last. So we must first
- * check the best case where the item is already the first.
- */
- bcq = TAILQ_FIRST(&bcs->bcs_bcqueue);
- bcb = &bcq->bcq_bcb;
- if (bcm == bcb->bcb_bcm)
- return 0;
-
- /*
- * The item was not the first, so it is the last. We'll try to
- * assign it to the head of the queue, however if there is a
- * transfer in progress, then we have to make the item as the
- * next one.
- *
- * Interrupting the transfer of in progress message will cause
- * the client to lose track of the message position/data.
- */
- bcqn = TAILQ_LAST(&bcs->bcs_bcqueue, bcqueue);
- TAILQ_REMOVE(&bcs->bcs_bcqueue, bcqn, bcq_entry);
- if (bcb->bcb_pos != 0) {
- /*
- * First position is already being sent, insert into
- * second position.
- */
- TAILQ_INSERT_AFTER(&bcs->bcs_bcqueue, bcq, bcqn, bcq_entry);
- } else {
- /*
- * Old message didn't start being sent, we still have
- * time to put this one in the head of the queue.
- */
- TAILQ_INSERT_HEAD(&bcs->bcs_bcqueue, bcqn, bcq_entry);
- bcb = &bcqn->bcq_bcb;
- bcs->bcs_bout = bcb;
- }
-
- return 0;
-}
-
-static void control_reset_buf(struct bfd_control_buffer *bcb)
-{
- /* Get ride of old data. */
- XFREE(MTYPE_BFDD_NOTIFICATION, bcb->bcb_buf);
- bcb->bcb_pos = 0;
- bcb->bcb_left = 0;
-}
-
-static void control_read(struct event *t)
-{
- struct bfd_control_socket *bcs = EVENT_ARG(t);
- struct bfd_control_buffer *bcb = &bcs->bcs_bin;
- int sd = bcs->bcs_sd;
- struct bfd_control_msg bcm;
- ssize_t bread;
- size_t plen;
-
- /*
- * Check if we have already downloaded message content, if so then skip
- * to
- * download the rest of it and process.
- *
- * Otherwise download a new message header and allocate the necessary
- * memory.
- */
- if (bcb->bcb_buf != NULL)
- goto skip_header;
-
- bread = read(sd, &bcm, sizeof(bcm));
- if (bread == 0) {
- control_free(bcs);
- return;
- }
- if (bread < 0) {
- if (errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR)
- goto schedule_next_read;
-
- zlog_warn("%s: read: %s", __func__, strerror(errno));
- control_free(bcs);
- return;
- }
-
- /* Validate header fields. */
- plen = ntohl(bcm.bcm_length);
- if (plen < 2) {
- zlog_debug("%s: client closed due small message length: %d",
- __func__, bcm.bcm_length);
- control_free(bcs);
- return;
- }
-
-#define FRR_BFD_MAXLEN 10 * 1024
-
- if (plen > FRR_BFD_MAXLEN) {
- zlog_debug("%s: client closed, invalid message length: %d",
- __func__, bcm.bcm_length);
- control_free(bcs);
- return;
- }
-
- if (bcm.bcm_ver != BMV_VERSION_1) {
- zlog_debug("%s: client closed due bad version: %d", __func__,
- bcm.bcm_ver);
- control_free(bcs);
- return;
- }
-
- /* Prepare the buffer to load the message. */
- bcs->bcs_version = bcm.bcm_ver;
- bcs->bcs_type = bcm.bcm_type;
-
- bcb->bcb_pos = sizeof(bcm);
- bcb->bcb_left = plen;
- bcb->bcb_buf = XMALLOC(MTYPE_BFDD_NOTIFICATION,
- sizeof(bcm) + bcb->bcb_left + 1);
- if (bcb->bcb_buf == NULL) {
- zlog_warn("%s: not enough memory for message size: %zu",
- __func__, bcb->bcb_left);
- control_free(bcs);
- return;
- }
-
- memcpy(bcb->bcb_buf, &bcm, sizeof(bcm));
-
- /* Terminate data string with NULL for later processing. */
- bcb->bcb_buf[sizeof(bcm) + bcb->bcb_left] = 0;
-
-skip_header:
- /* Download the remaining data of the message and process it. */
- bread = read(sd, &bcb->bcb_buf[bcb->bcb_pos], bcb->bcb_left);
- if (bread == 0) {
- control_free(bcs);
- return;
- }
- if (bread < 0) {
- if (errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR)
- goto schedule_next_read;
-
- zlog_warn("%s: read: %s", __func__, strerror(errno));
- control_free(bcs);
- return;
- }
-
- bcb->bcb_pos += bread;
- bcb->bcb_left -= bread;
- /* We need more data, return to wait more. */
- if (bcb->bcb_left > 0)
- goto schedule_next_read;
-
- switch (bcb->bcb_bcm->bcm_type) {
- case BMT_REQUEST_ADD:
- control_handle_request_add(bcs, bcb->bcb_bcm);
- break;
- case BMT_REQUEST_DEL:
- control_handle_request_del(bcs, bcb->bcb_bcm);
- break;
- case BMT_NOTIFY:
- control_handle_notify(bcs, bcb->bcb_bcm);
- break;
- case BMT_NOTIFY_ADD:
- control_handle_notify_add(bcs, bcb->bcb_bcm);
- break;
- case BMT_NOTIFY_DEL:
- control_handle_notify_del(bcs, bcb->bcb_bcm);
- break;
-
- default:
- zlog_debug("%s: unhandled message type: %d", __func__,
- bcb->bcb_bcm->bcm_type);
- control_response(bcs, bcb->bcb_bcm->bcm_id, BCM_RESPONSE_ERROR,
- "invalid message type");
- break;
- }
-
- bcs->bcs_version = 0;
- bcs->bcs_type = 0;
- control_reset_buf(bcb);
-
-schedule_next_read:
- bcs->bcs_ev = NULL;
- event_add_read(master, control_read, bcs, sd, &bcs->bcs_ev);
-}
-
-static void control_write(struct event *t)
-{
- struct bfd_control_socket *bcs = EVENT_ARG(t);
- struct bfd_control_buffer *bcb = bcs->bcs_bout;
- int sd = bcs->bcs_sd;
- ssize_t bwrite;
-
- bwrite = write(sd, &bcb->bcb_buf[bcb->bcb_pos], bcb->bcb_left);
- if (bwrite == 0) {
- control_free(bcs);
- return;
- }
- if (bwrite < 0) {
- if (errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR) {
- bcs->bcs_outev = NULL;
- event_add_write(master, control_write, bcs, bcs->bcs_sd,
- &bcs->bcs_outev);
- return;
- }
-
- zlog_warn("%s: write: %s", __func__, strerror(errno));
- control_free(bcs);
- return;
- }
-
- bcb->bcb_pos += bwrite;
- bcb->bcb_left -= bwrite;
- if (bcb->bcb_left > 0) {
- bcs->bcs_outev = NULL;
- event_add_write(master, control_write, bcs, bcs->bcs_sd,
- &bcs->bcs_outev);
- return;
- }
-
- control_queue_dequeue(bcs);
-}
-
-
-/*
- * Message processing
- */
-static void control_handle_request_add(struct bfd_control_socket *bcs,
- struct bfd_control_msg *bcm)
-{
- const char *json = (const char *)bcm->bcm_data;
-
- if (config_request_add(json) == 0)
- control_response(bcs, bcm->bcm_id, BCM_RESPONSE_OK, NULL);
- else
- control_response(bcs, bcm->bcm_id, BCM_RESPONSE_ERROR,
- "request add failed");
-}
-
-static void control_handle_request_del(struct bfd_control_socket *bcs,
- struct bfd_control_msg *bcm)
-{
- const char *json = (const char *)bcm->bcm_data;
-
- if (config_request_del(json) == 0)
- control_response(bcs, bcm->bcm_id, BCM_RESPONSE_OK, NULL);
- else
- control_response(bcs, bcm->bcm_id, BCM_RESPONSE_ERROR,
- "request del failed");
-}
-
-static struct bfd_session *_notify_find_peer(struct bfd_peer_cfg *bpc)
-{
- struct peer_label *pl;
-
- if (bpc->bpc_has_label) {
- pl = pl_find(bpc->bpc_label);
- if (pl)
- return pl->pl_bs;
- }
-
- return bs_peer_find(bpc);
-}
-
-static void _control_handle_notify(struct hash_bucket *hb, void *arg)
-{
- struct bfd_control_socket *bcs = arg;
- struct bfd_session *bs = hb->data;
-
- /* Notify peer configuration. */
- if (bcs->bcs_notify & BCM_NOTIFY_CONFIG)
- _control_notify_config(bcs, BCM_NOTIFY_CONFIG_ADD, bs);
-
- /* Notify peer status. */
- if (bcs->bcs_notify & BCM_NOTIFY_PEER_STATE)
- _control_notify(bcs, bs);
-}
-
-static void control_handle_notify(struct bfd_control_socket *bcs,
- struct bfd_control_msg *bcm)
-{
- memcpy(&bcs->bcs_notify, bcm->bcm_data, sizeof(bcs->bcs_notify));
-
- control_response(bcs, bcm->bcm_id, BCM_RESPONSE_OK, NULL);
-
- /*
- * If peer asked for notification configuration, send everything that
- * was configured until the moment to sync up.
- */
- if (bcs->bcs_notify & (BCM_NOTIFY_CONFIG | BCM_NOTIFY_PEER_STATE))
- bfd_id_iterate(_control_handle_notify, bcs);
-}
-
-static int notify_add_cb(struct bfd_peer_cfg *bpc, void *arg)
-{
- struct bfd_control_socket *bcs = arg;
- struct bfd_session *bs = _notify_find_peer(bpc);
-
- if (bs == NULL)
- return -1;
-
- control_notifypeer_new(bcs, bs);
-
- /* Notify peer status. */
- _control_notify(bcs, bs);
-
- return 0;
-}
-
-static int notify_del_cb(struct bfd_peer_cfg *bpc, void *arg)
-{
- struct bfd_control_socket *bcs = arg;
- struct bfd_session *bs = _notify_find_peer(bpc);
- struct bfd_notify_peer *bnp;
-
- if (bs == NULL)
- return -1;
-
- bnp = control_notifypeer_find(bcs, bs);
- if (bnp)
- control_notifypeer_free(bcs, bnp);
-
- return 0;
-}
-
-static void control_handle_notify_add(struct bfd_control_socket *bcs,
- struct bfd_control_msg *bcm)
-{
- const char *json = (const char *)bcm->bcm_data;
-
- if (config_notify_request(bcs, json, notify_add_cb) == 0) {
- control_response(bcs, bcm->bcm_id, BCM_RESPONSE_OK, NULL);
- return;
- }
-
- control_response(bcs, bcm->bcm_id, BCM_RESPONSE_ERROR,
- "failed to parse notify data");
-}
-
-static void control_handle_notify_del(struct bfd_control_socket *bcs,
- struct bfd_control_msg *bcm)
-{
- const char *json = (const char *)bcm->bcm_data;
-
- if (config_notify_request(bcs, json, notify_del_cb) == 0) {
- control_response(bcs, bcm->bcm_id, BCM_RESPONSE_OK, NULL);
- return;
- }
-
- control_response(bcs, bcm->bcm_id, BCM_RESPONSE_ERROR,
- "failed to parse notify data");
-}
-
-
-/*
- * Internal functions used by the BFD daemon.
- */
-static void control_response(struct bfd_control_socket *bcs, uint16_t id,
- const char *status, const char *error)
-{
- struct bfd_control_msg *bcm;
- char *jsonstr;
- size_t jsonstrlen;
-
- /* Generate JSON response. */
- jsonstr = config_response(status, error);
- if (jsonstr == NULL) {
- zlog_warn("%s: config_response: failed to get JSON str",
- __func__);
- return;
- }
-
- /* Allocate data and answer. */
- jsonstrlen = strlen(jsonstr);
- bcm = XMALLOC(MTYPE_BFDD_NOTIFICATION,
- sizeof(struct bfd_control_msg) + jsonstrlen);
-
- bcm->bcm_length = htonl(jsonstrlen);
- bcm->bcm_ver = BMV_VERSION_1;
- bcm->bcm_type = BMT_RESPONSE;
- bcm->bcm_id = id;
- memcpy(bcm->bcm_data, jsonstr, jsonstrlen);
- XFREE(MTYPE_BFDD_NOTIFICATION, jsonstr);
-
- control_queue_enqueue_first(bcs, bcm);
-}
-
-static void _control_notify(struct bfd_control_socket *bcs,
- struct bfd_session *bs)
-{
- struct bfd_control_msg *bcm;
- char *jsonstr;
- size_t jsonstrlen;
-
- /* Generate JSON response. */
- jsonstr = config_notify(bs);
- if (jsonstr == NULL) {
- zlog_warn("%s: config_notify: failed to get JSON str",
- __func__);
- return;
- }
-
- /* Allocate data and answer. */
- jsonstrlen = strlen(jsonstr);
- bcm = XMALLOC(MTYPE_BFDD_NOTIFICATION,
- sizeof(struct bfd_control_msg) + jsonstrlen);
-
- bcm->bcm_length = htonl(jsonstrlen);
- bcm->bcm_ver = BMV_VERSION_1;
- bcm->bcm_type = BMT_NOTIFY;
- bcm->bcm_id = htons(BCM_NOTIFY_ID);
- memcpy(bcm->bcm_data, jsonstr, jsonstrlen);
- XFREE(MTYPE_BFDD_NOTIFICATION, jsonstr);
-
- control_queue_enqueue(bcs, bcm);
-}
-
-int control_notify(struct bfd_session *bs, uint8_t notify_state)
-{
- struct bfd_control_socket *bcs;
- struct bfd_notify_peer *bnp;
-
- /* Notify zebra listeners as well. */
- ptm_bfd_notify(bs, notify_state);
-
- /*
- * PERFORMANCE: reuse the bfd_control_msg allocated data for
- * all control sockets to avoid wasting memory.
- */
- TAILQ_FOREACH (bcs, &bglobal.bg_bcslist, bcs_entry) {
- /*
- * Test for all notifications first, then search for
- * specific peers.
- */
- if ((bcs->bcs_notify & BCM_NOTIFY_PEER_STATE) == 0) {
- bnp = control_notifypeer_find(bcs, bs);
- /*
- * If the notification is not configured here,
- * don't send it.
- */
- if (bnp == NULL)
- continue;
- }
-
- _control_notify(bcs, bs);
- }
-
- return 0;
-}
-
-static void _control_notify_config(struct bfd_control_socket *bcs,
- const char *op, struct bfd_session *bs)
-{
- struct bfd_control_msg *bcm;
- char *jsonstr;
- size_t jsonstrlen;
-
- /* Generate JSON response. */
- jsonstr = config_notify_config(op, bs);
- if (jsonstr == NULL) {
- zlog_warn("%s: config_notify_config: failed to get JSON str",
- __func__);
- return;
- }
-
- /* Allocate data and answer. */
- jsonstrlen = strlen(jsonstr);
- bcm = XMALLOC(MTYPE_BFDD_NOTIFICATION,
- sizeof(struct bfd_control_msg) + jsonstrlen);
-
- bcm->bcm_length = htonl(jsonstrlen);
- bcm->bcm_ver = BMV_VERSION_1;
- bcm->bcm_type = BMT_NOTIFY;
- bcm->bcm_id = htons(BCM_NOTIFY_ID);
- memcpy(bcm->bcm_data, jsonstr, jsonstrlen);
- XFREE(MTYPE_BFDD_NOTIFICATION, jsonstr);
-
- control_queue_enqueue(bcs, bcm);
-}
-
-int control_notify_config(const char *op, struct bfd_session *bs)
-{
- struct bfd_control_socket *bcs;
- struct bfd_notify_peer *bnp;
-
- /* Remove the control sockets notification for this peer. */
- if (strcmp(op, BCM_NOTIFY_CONFIG_DELETE) == 0 && bs->refcount > 0) {
- TAILQ_FOREACH (bcs, &bglobal.bg_bcslist, bcs_entry) {
- bnp = control_notifypeer_find(bcs, bs);
- if (bnp)
- control_notifypeer_free(bcs, bnp);
- }
- }
-
- /*
- * PERFORMANCE: reuse the bfd_control_msg allocated data for
- * all control sockets to avoid wasting memory.
- */
- TAILQ_FOREACH (bcs, &bglobal.bg_bcslist, bcs_entry) {
- /*
- * Test for all notifications first, then search for
- * specific peers.
- */
- if ((bcs->bcs_notify & BCM_NOTIFY_CONFIG) == 0)
- continue;
-
- _control_notify_config(bcs, op, bs);
- }
-
- return 0;
-}
bs->remote_timers.required_min_echo = ntohl(state->required_echo_rx);
/* Notify and update counters. */
- control_notify(bs, bs->ses_state);
+ ptm_bfd_notify(bs, bs->ses_state);
/* No state change. */
if (old_state == bs->ses_state)
"ptm-del-session: [%s] session refcount is zero but it was configured by CLI",
bs_to_string(bs));
} else {
- control_notify_config(BCM_NOTIFY_CONFIG_DELETE, bs);
bfd_session_free(bs);
}
}
return pc;
/* Allocate the client data and save it. */
- pc = XCALLOC(MTYPE_BFDD_CONTROL, sizeof(*pc));
+ pc = XCALLOC(MTYPE_BFDD_CLIENT, sizeof(*pc));
pc->pc_pid = pid;
TAILQ_INSERT_HEAD(&pcqueue, pc, pc_entry);
pcn_free(pcn);
}
- XFREE(MTYPE_BFDD_CONTROL, pc);
+ XFREE(MTYPE_BFDD_CLIENT, pc);
}
static void pc_free_all(void)
return pcn;
/* Save the client notification data. */
- pcn = XCALLOC(MTYPE_BFDD_NOTIFICATION, sizeof(*pcn));
+ pcn = XCALLOC(MTYPE_BFDD_CLIENT_NOTIFICATION, sizeof(*pcn));
TAILQ_INSERT_HEAD(&pc->pc_pcnqueue, pcn, pcn_entry);
pcn->pcn_pc = pc;
pcn->pcn_pc = NULL;
TAILQ_REMOVE(&pc->pc_pcnqueue, pcn, pcn_entry);
- XFREE(MTYPE_BFDD_NOTIFICATION, pcn);
+ XFREE(MTYPE_BFDD_CLIENT_NOTIFICATION, pcn);
}
bfdd/bfdd_vty.c \
bfdd/bfdd_cli.c \
bfdd/bfd_packet.c \
- bfdd/config.c \
- bfdd/control.c \
bfdd/dplane.c \
bfdd/event.c \
bfdd/ptm_adapter.c \
# end
noinst_HEADERS += \
- bfdd/bfdctl.h \
bfdd/bfdd_nb.h \
bfdd/bfd.h \
# end
-f $SNAP_DATA/bfdd.conf \
--pid_file $SNAP_DATA/bfdd.pid \
--socket $SNAP_DATA/zsock \
- --vty_socket $SNAP_DATA \
- --bfdctl $SNAP_DATA/bfdd.sock
+ --vty_socket $SNAP_DATA
- network-bind
- network-control
bfdd-debug:
- command: sbin/bfdd -f $SNAP_DATA/bfdd.conf --pid_file $SNAP_DATA/bfdd.pid --socket $SNAP_DATA/zsock --vty_socket $SNAP_DATA --bfdctl $SNAP_DATA/bfdd.sock
+ command: sbin/bfdd -f $SNAP_DATA/bfdd.conf --pid_file $SNAP_DATA/bfdd.pid --socket $SNAP_DATA/zsock --vty_socket $SNAP_DATA
plugs:
- network
- network-bind
projects / matthieu / frr.git / commitdiff