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507d2737d6
Revert "zebra: unexpose label-manager util-funcs as static"
This reverts commit d3d9639d9a.
Signed-off-by: Pat Ruddy <pat@voltanet.io>
130 lines
4.3 KiB
C
130 lines
4.3 KiB
C
/*
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* Label Manager header
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*
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* Copyright (C) 2017 by Bingen Eguzkitza,
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* Volta Networks Inc.
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*
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* This file is part of FRRouting (FRR)
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*
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* FRR is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* FRR is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _LABEL_MANAGER_H
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#define _LABEL_MANAGER_H
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#include <stdint.h>
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#include "lib/linklist.h"
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#include "lib/thread.h"
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#include "lib/hook.h"
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#include "zebra/zserv.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define NO_PROTO 0
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/*
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* Label chunk struct
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* Client daemon which the chunk belongs to can be identified by a tuple of:
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* proto (daemon protocol) + instance + zapi session_id
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* If the client then passes a non-empty value to keep field when it requests
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* for chunks, the chunks won't be garbage collected and the client will be
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* responsible for releasing them.
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* Otherwise, if the keep field is not set (value 0) for the chunk, it will be
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* automatically released when the client disconnects or when it reconnects
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* (in case it died unexpectedly, we can know it's the same because it will have
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* the same proto+instance+session values)
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*/
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struct label_manager_chunk {
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uint8_t proto;
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unsigned short instance;
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uint32_t session_id;
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uint8_t keep;
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uint32_t start; /* First label of the chunk */
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uint32_t end; /* Last label of the chunk */
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};
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/* declare hooks for the basic API, so that it can be specialized or served
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* externally. Also declare a hook when those functions have been registered,
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* so that any external module wanting to replace those can react
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*/
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DECLARE_HOOK(lm_client_connect, (struct zserv *client, vrf_id_t vrf_id),
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(client, vrf_id));
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DECLARE_HOOK(lm_client_disconnect, (struct zserv *client), (client));
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DECLARE_HOOK(lm_get_chunk,
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(struct label_manager_chunk * *lmc, struct zserv *client,
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uint8_t keep, uint32_t size, uint32_t base, vrf_id_t vrf_id),
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(lmc, client, keep, size, base, vrf_id));
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DECLARE_HOOK(lm_release_chunk,
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(struct zserv *client, uint32_t start, uint32_t end),
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(client, start, end));
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DECLARE_HOOK(lm_cbs_inited, (), ());
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/* declare wrappers to be called in zapi_msg.c (as hooks must be called in
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* source file where they were defined)
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*/
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void lm_client_connect_call(struct zserv *client, vrf_id_t vrf_id);
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void lm_get_chunk_call(struct label_manager_chunk **lmc, struct zserv *client,
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uint8_t keep, uint32_t size, uint32_t base,
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vrf_id_t vrf_id);
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void lm_release_chunk_call(struct zserv *client, uint32_t start,
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uint32_t end);
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/* API for an external LM to return responses for requests */
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int lm_client_connect_response(uint8_t proto, uint16_t instance,
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uint32_t session_id, vrf_id_t vrf_id,
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uint8_t result);
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int lm_get_chunk_response(struct label_manager_chunk *lmc, struct zserv *client,
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vrf_id_t vrf_id);
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/* convenience function to allocate an lmc to be consumed by the above API */
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struct label_manager_chunk *
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create_label_chunk(uint8_t proto, unsigned short instance, uint32_t session_id,
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uint8_t keep, uint32_t start, uint32_t end);
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void delete_label_chunk(void *val);
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/* register/unregister callbacks for hooks */
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void lm_hooks_register(void);
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void lm_hooks_unregister(void);
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/*
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* Main label manager struct
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* Holds a linked list of label chunks.
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*/
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struct label_manager {
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struct list *lc_list;
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};
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void label_manager_init(void);
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struct label_manager_chunk *
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assign_label_chunk(uint8_t proto, unsigned short instance, uint32_t session_id,
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uint8_t keep, uint32_t size, uint32_t base);
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int release_label_chunk(uint8_t proto, unsigned short instance,
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uint32_t session_id, uint32_t start, uint32_t end);
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int lm_client_disconnect_cb(struct zserv *client);
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int release_daemon_label_chunks(struct zserv *client);
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void label_manager_close(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _LABEL_MANAGER_H */
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