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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* MGMTD Backend Client Connection Adapter
*
* Copyright (C) 2021 Vmware, Inc.
* Pushpasis Sarkar <spushpasis@vmware.com>
* Copyright (c) 2023, LabN Consulting, L.L.C.
*/
#ifndef _FRR_MGMTD_BE_ADAPTER_H_
#define _FRR_MGMTD_BE_ADAPTER_H_
#include "mgmt_be_client.h"
#include "mgmt_msg.h"
#include "mgmtd/mgmt_defines.h"
#include "mgmtd/mgmt_ds.h"
#define MGMTD_BE_CONN_INIT_DELAY_MSEC 50
#define MGMTD_FIND_ADAPTER_BY_INDEX(adapter_index) \
mgmt_adaptr_ref[adapter_index]
enum mgmt_be_req_type {
MGMTD_BE_REQ_NONE = 0,
MGMTD_BE_REQ_CFG_VALIDATE,
MGMTD_BE_REQ_CFG_APPLY,
MGMTD_BE_REQ_DATA_GET_ELEM,
MGMTD_BE_REQ_DATA_GET_NEXT
};
struct mgmt_be_cfgreq {
Mgmtd__YangCfgDataReq **cfgdata_reqs;
size_t num_reqs;
};
struct mgmt_be_datareq {
Mgmtd__YangGetDataReq **getdata_reqs;
size_t num_reqs;
};
PREDECL_LIST(mgmt_be_adapters);
PREDECL_LIST(mgmt_txn_badapters);
struct mgmt_be_client_adapter {
struct msg_conn *conn;
struct event *conn_init_ev;
enum mgmt_be_client_id id;
uint32_t flags;
char name[MGMTD_CLIENT_NAME_MAX_LEN];
uint8_t num_xpath_reg;
char xpath_reg[MGMTD_MAX_NUM_XPATH_REG][MGMTD_MAX_XPATH_LEN];
int refcount;
/*
* List of config items that should be sent to the
* backend during re/connect. This is temporarily
* created and then freed-up as soon as the initial
* config items has been applied onto the backend.
*/
struct nb_config_cbs cfg_chgs;
struct mgmt_be_adapters_item list_linkage;
};
#define MGMTD_BE_ADAPTER_FLAGS_CFG_SYNCED (1U << 0)
DECLARE_LIST(mgmt_be_adapters, struct mgmt_be_client_adapter, list_linkage);
/*
* MGMT_SUBSCR_xxx - flags for subscription types for xpaths registrations
*
* MGMT_SUBSCR_VALIDATE_CFG :: the client should be asked to validate config
* MGMT_SUBSCR_NOTIFY_CFG :: the client should be notified of config changes
* MGMT_SUBSCR_OPER_OWN :: the client owns the given oeprational state
*/
#define MGMT_SUBSCR_VALIDATE_CFG 0x1
#define MGMT_SUBSCR_NOTIFY_CFG 0x2
#define MGMT_SUBSCR_OPER_OWN 0x4
#define MGMT_SUBSCR_ALL 0x7
struct mgmt_be_client_subscr_info {
uint xpath_subscr[MGMTD_BE_CLIENT_ID_MAX];
};
/* Initialise backend adapter module. */
extern void mgmt_be_adapter_init(struct event_loop *tm);
/* Destroy the backend adapter module. */
extern void mgmt_be_adapter_destroy(void);
/* Acquire lock for backend adapter. */
extern void mgmt_be_adapter_lock(struct mgmt_be_client_adapter *adapter);
/* Remove lock from backend adapter. */
extern void mgmt_be_adapter_unlock(struct mgmt_be_client_adapter **adapter);
/* Create backend adapter. */
extern struct msg_conn *mgmt_be_create_adapter(int conn_fd,
union sockunion *su);
/* Fetch backend adapter given an adapter name. */
extern struct mgmt_be_client_adapter *
mgmt_be_get_adapter_by_name(const char *name);
/* Fetch backend adapter given an client ID. */
extern struct mgmt_be_client_adapter *
mgmt_be_get_adapter_by_id(enum mgmt_be_client_id id);
/* Fetch backend adapter config. */
extern int mgmt_be_get_adapter_config(struct mgmt_be_client_adapter *adapter,
struct nb_config_cbs **cfg_chgs);
/* Create/destroy a transaction. */
extern int mgmt_be_send_txn_req(struct mgmt_be_client_adapter *adapter,
uint64_t txn_id, bool create);
/*
* Send config data create request to backend client.
*
* adaptr
* Backend adapter information.
*
* txn_id
* Unique transaction identifier.
*
* batch_id
* Request batch ID.
*
* cfgdata_reqs
* An array of pointer to Mgmtd__YangCfgDataReq.
*
* num_reqs
* Length of the cfgdata_reqs array.
*
* end_of_data
* TRUE if the data from last batch, FALSE otherwise.
*
* Returns:
* 0 on success, -1 on failure.
*/
extern int mgmt_be_send_cfgdata_req(struct mgmt_be_client_adapter *adapter,
uint64_t txn_id, uint64_t batch_id,
Mgmtd__YangCfgDataReq **cfgdata_reqs,
size_t num_reqs, bool end_of_data);
/*
* Send config apply request to backend client.
*
* adapter
* Backend adapter information.
*
* txn_id
* Unique transaction identifier.
*
* Returns:
* 0 on success, -1 on failure.
*/
extern int mgmt_be_send_cfgapply_req(struct mgmt_be_client_adapter *adapter,
uint64_t txn_id);
/*
* Dump backend adapter status to vty.
*/
extern void mgmt_be_adapter_status_write(struct vty *vty);
/*
* Dump xpath registry for each backend client to vty.
*/
extern void mgmt_be_xpath_register_write(struct vty *vty);
/**
* Lookup the clients which are subscribed to a given `xpath`
* and the way they are subscribed.
*
* Args:
* xpath - the xpath to check for subscription information.
* subscr_info - An array of uint indexed by client id
* each eleemnt holds the subscription info
* for that client.
*/
extern void mgmt_be_get_subscr_info_for_xpath(
const char *xpath, struct mgmt_be_client_subscr_info *subscr_info);
/*
* Dump backend client information for a given xpath to vty.
*/
extern void mgmt_be_xpath_subscr_info_write(struct vty *vty,
const char *xpath);
#endif /* _FRR_MGMTD_BE_ADAPTER_H_ */
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