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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2020 NetDEF, Inc.
*/
#ifndef _PATH_PCEP_CONTROLLER_H_
#define _PATH_PCEP_CONTROLLER_H_
#include "pathd/path_pcep.h"
struct ctrl_state;
struct pcc_state;
enum pcep_main_event_type {
PCEP_MAIN_EVENT_UNDEFINED = 0,
PCEP_MAIN_EVENT_START_SYNC,
PCEP_MAIN_EVENT_INITIATE_CANDIDATE,
PCEP_MAIN_EVENT_UPDATE_CANDIDATE,
PCEP_MAIN_EVENT_REMOVE_CANDIDATE_LSP,
};
typedef int (*pcep_main_event_handler_t)(enum pcep_main_event_type type,
int pcc_id, void *payload);
typedef void (*pcep_refine_callback_t)(struct ctrl_state *ctrl_state,
struct pcc_state *pcc_state,
struct path *path, void *payload);
enum pcep_pathd_event_type {
PCEP_PATH_UNDEFINED = 0,
PCEP_PATH_CREATED,
PCEP_PATH_UPDATED,
PCEP_PATH_REMOVED
};
struct ctrl_state {
struct thread_master *main;
struct thread_master *self;
pcep_main_event_handler_t main_event_handler;
struct pcc_opts *pcc_opts;
int pcc_count;
int pcc_last_id;
struct pcc_state *pcc[MAX_PCC];
};
/* Timer handling data structures */
enum pcep_ctrl_timeout_type { TO_UNDEFINED, TO_COMPUTATION_REQUEST, TO_MAX };
enum pcep_ctrl_timer_type {
TM_UNDEFINED,
TM_RECONNECT_PCC,
TM_PCEPLIB_TIMER,
TM_TIMEOUT,
TM_CALCULATE_BEST_PCE,
TM_SESSION_TIMEOUT_PCC,
TM_MAX
};
struct pcep_ctrl_timer_data {
struct ctrl_state *ctrl_state;
enum pcep_ctrl_timer_type timer_type;
enum pcep_ctrl_timeout_type timeout_type;
int pcc_id;
void *payload;
};
/* Socket handling data structures */
enum pcep_ctrl_socket_type { SOCK_PCEPLIB = 1 };
struct pcep_ctrl_socket_data {
struct ctrl_state *ctrl_state;
enum pcep_ctrl_socket_type type;
bool is_read;
int fd;
int pcc_id;
void *payload;
};
typedef void (*pcep_ctrl_thread_callback)(struct event *);
/* PCC connection information, populated in a thread-safe
* manner with pcep_ctrl_get_pcc_info() */
struct pcep_pcc_info {
struct ctrl_state *ctrl_state; /* will be NULL when returned */
char pce_name[64];
int pcc_id;
struct ipaddr pcc_addr;
uint16_t pcc_port;
int status;
short msd;
uint32_t next_reqid;
uint32_t next_plspid;
bool is_best_multi_pce;
bool previous_best;
uint8_t precedence;
};
/* Functions called from the main thread */
int pcep_ctrl_initialize(struct thread_master *main_thread,
struct frr_pthread **fpt,
pcep_main_event_handler_t event_handler);
int pcep_ctrl_finalize(struct frr_pthread **fpt);
int pcep_ctrl_update_pcc_options(struct frr_pthread *fpt,
struct pcc_opts *opts);
int pcep_ctrl_update_pce_options(struct frr_pthread *fpt,
struct pce_opts *opts);
int pcep_ctrl_remove_pcc(struct frr_pthread *fpt, struct pce_opts *pce_opts);
int pcep_ctrl_reset_pcc_session(struct frr_pthread *fpt, char *pce_name);
int pcep_ctrl_pathd_event(struct frr_pthread *fpt,
enum pcep_pathd_event_type type, struct path *path);
int pcep_ctrl_sync_path(struct frr_pthread *fpt, int pcc_id, struct path *path);
int pcep_ctrl_sync_done(struct frr_pthread *fpt, int pcc_id);
struct counters_group *pcep_ctrl_get_counters(struct frr_pthread *fpt,
int pcc_id);
pcep_session *pcep_ctrl_get_pcep_session(struct frr_pthread *fpt, int pcc_id);
struct pcep_pcc_info *pcep_ctrl_get_pcc_info(struct frr_pthread *fpt,
const char *pce_name);
/* Asynchronously send a report. The caller is giving away the path structure,
* it shouldn't be allocated on the stack. If `pcc_id` is `0` the report is
* sent by all PCCs. The parameter is_stable is used to hint whether the status
* will soon change, this is used to ensure all report updates are sent even
* when missing status update events */
int pcep_ctrl_send_report(struct frr_pthread *fpt, int pcc_id,
struct path *path, bool is_stable);
int pcep_ctrl_send_error(struct frr_pthread *fpt, int pcc_id,
struct pcep_error *error);
/* Functions called from the controller thread */
void pcep_thread_start_sync(struct ctrl_state *ctrl_state, int pcc_id);
void pcep_thread_update_path(struct ctrl_state *ctrl_state, int pcc_id,
struct path *path);
void pcep_thread_initiate_path(struct ctrl_state *ctrl_state, int pcc_id,
struct path *path);
void pcep_thread_cancel_timer(struct event **thread);
void pcep_thread_schedule_reconnect(struct ctrl_state *ctrl_state, int pcc_id,
int retry_count, struct event **thread);
void pcep_thread_schedule_timeout(struct ctrl_state *ctrl_state, int pcc_id,
enum pcep_ctrl_timeout_type type,
uint32_t delay, void *param,
struct event **thread);
void pcep_thread_schedule_session_timeout(struct ctrl_state *ctrl_state,
int pcc_id, int delay,
struct event **thread);
void pcep_thread_remove_candidate_path_segments(struct ctrl_state *ctrl_state,
struct pcc_state *pcc_state);
void pcep_thread_schedule_sync_best_pce(struct ctrl_state *ctrl_state,
int pcc_id, int delay,
struct event **thread);
void pcep_thread_schedule_pceplib_timer(struct ctrl_state *ctrl_state,
int delay, void *payload,
struct event **thread,
pcep_ctrl_thread_callback cb);
int pcep_thread_socket_read(void *fpt, void **thread, int fd, void *payload,
pcep_ctrl_thread_callback cb);
int pcep_thread_socket_write(void *fpt, void **thread, int fd, void *payload,
pcep_ctrl_thread_callback cb);
int pcep_thread_send_ctrl_event(void *fpt, void *payload,
pcep_ctrl_thread_callback cb);
void pcep_thread_pcep_event(struct event *thread);
int pcep_thread_pcc_count(struct ctrl_state *ctrl_state);
/* Called by the PCC to refine a path in the main thread */
int pcep_thread_refine_path(struct ctrl_state *ctrl_state, int pcc_id,
pcep_refine_callback_t cb, struct path *path,
void *payload);
#endif // _PATH_PCEP_CONTROLLER_H_
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