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d8b87afe7c
It doesn't make much sense for a hash function to modify its argument, so const the hash input. BGP does it in a couple places, those cast away the const. Not great but not any worse than it was. Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
84 lines
2.9 KiB
C
84 lines
2.9 KiB
C
/* BGP Large Communities Attribute.
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*
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* Copyright (C) 2016 Keyur Patel <keyur@arrcus.com>
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*
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* This file is part of FreeRangeRouting (FRR).
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*
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* FRR is free software; you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2, or (at your option) any later version.
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*
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* FRR is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* 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 _QUAGGA_BGP_LCOMMUNITY_H
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#define _QUAGGA_BGP_LCOMMUNITY_H
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#include "lib/json.h"
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#include "bgpd/bgp_route.h"
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/* Large Communities value is twelve octets long. */
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#define LCOMMUNITY_SIZE 12
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/* Large Communities attribute. */
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struct lcommunity {
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/* Reference counter. */
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unsigned long refcnt;
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/* Size of Extended Communities attribute. */
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int size;
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/* Large Communities value. */
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uint8_t *val;
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/* Large Communities as a json object */
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json_object *json;
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/* Human readable format string. */
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char *str;
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};
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/* Large community value is 12 octets. */
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struct lcommunity_val {
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char val[LCOMMUNITY_SIZE];
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};
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#define lcom_length(X) ((X)->size * LCOMMUNITY_SIZE)
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extern void lcommunity_init(void);
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extern void lcommunity_finish(void);
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extern void lcommunity_free(struct lcommunity **);
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extern struct lcommunity *lcommunity_parse(uint8_t *, unsigned short);
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extern struct lcommunity *lcommunity_dup(struct lcommunity *);
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extern struct lcommunity *lcommunity_merge(struct lcommunity *,
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struct lcommunity *);
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extern struct lcommunity *lcommunity_uniq_sort(struct lcommunity *);
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extern struct lcommunity *lcommunity_intern(struct lcommunity *);
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extern bool lcommunity_cmp(const void *arg1, const void *arg2);
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extern void lcommunity_unintern(struct lcommunity **);
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extern unsigned int lcommunity_hash_make(const void *);
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extern struct hash *lcommunity_hash(void);
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extern struct lcommunity *lcommunity_str2com(const char *);
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extern int lcommunity_match(const struct lcommunity *,
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const struct lcommunity *);
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extern char *lcommunity_str(struct lcommunity *, bool make_json);
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extern int lcommunity_include(struct lcommunity *lcom, uint8_t *ptr);
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extern void lcommunity_del_val(struct lcommunity *lcom, uint8_t *ptr);
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extern void bgp_compute_aggregate_lcommunity(
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struct bgp_aggregate *aggregate,
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struct lcommunity *lcommunity);
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extern void bgp_remove_lcommunity_from_aggregate(
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struct bgp_aggregate *aggregate,
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struct lcommunity *lcommunity);
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extern void bgp_aggr_lcommunity_remove(void *arg);
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#endif /* _QUAGGA_BGP_LCOMMUNITY_H */
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