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RD may be built based on an AS number. Like for the AS, the RD may use the AS notation. The two below examples can illustrate: RD 1.1:20 stands for an AS4B:NN RD with AS4B=65536 in dot format. RD 0.1:20 stands for an AS2B:NNNN RD with AS2B=0.1 in dot+ format. This commit adds the asnotation mode to prefix_rd2str() API so as to pick up the relevant display. Two new printfrr extensions are available to display the RD with the two above display methods. - The pRDD extension stands for dot asnotation format - The pRDE extension stands for dot+ asnotation format. - The pRD extension has been renamed to pRDP extension The code is changed each time '%pRD' printf extension is called. Possibly, the asnotation may change the output, then a macro defines the asnotation mode to use. A side effect of forging the mode to use is that the string could not be concatenated with other strings in vty_out and snprintfrr. Those functions have been called multiple times. When zlog_debug needs to display the RD with some other string, the prefix_rd2str() old API is used instead of the printf extension. Some code has been kept untouched: - code related to running-config. Actually, wherever an RD is displayed, its configured name should be dumped. - bgp rfapi code - bgp evpn multihoming code (partially done), since the logic is missing to get the asnotation of 'struct bgp_evpn_es'. Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
/*
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* AS number structure
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* Copyright 2022 6WIND
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2, or (at your
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* option) any later version.
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*
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* GNU Zebra 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 _FRR_ASN_H
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#define _FRR_ASN_H
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#include "zebra.h"
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#include "command_match.h"
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#include "json.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define ASN_STRING_MAX_SIZE 12
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enum asnotation_mode {
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ASNOTATION_PLAIN = 0,
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ASNOTATION_DOT,
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ASNOTATION_DOTPLUS,
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ASNOTATION_UNDEFINED,
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};
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typedef uint32_t as_t;
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extern bool asn_str2asn(const char *asstring, as_t *asn);
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extern const char *asn_asn2asplain(as_t asn);
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extern const char *asn_str2asn_parse(const char *asstring, as_t *asn,
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bool *found_ptr);
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extern enum match_type asn_str2asn_match(const char *str);
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extern bool asn_str2asn_notation(const char *asstring, as_t *asn,
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enum asnotation_mode *asnotation);
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extern const char *asn_mode2str(enum asnotation_mode asnotation);
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void asn_asn2json_array(json_object *jseg_list, as_t asn,
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enum asnotation_mode asnotation);
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void asn_asn2json(json_object *jseg_list, const char *attr,
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as_t asn, enum asnotation_mode asnotation);
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extern char *asn_asn2string(const as_t *as, char *buf, size_t len,
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enum asnotation_mode asnotation);
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/* display AS in appropriate format */
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#ifdef _FRR_ATTRIBUTE_PRINTFRR
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#pragma FRR printfrr_ext "%pASP" (as_t *)
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#pragma FRR printfrr_ext "%pASD" (as_t *)
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#pragma FRR printfrr_ext "%pASE" (as_t *)
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#endif
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#define ASN_FORMAT(mode) \
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((mode == ASNOTATION_DOT) ? "%pASD" : \
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((mode == ASNOTATION_DOTPLUS) ? "%pASE" : \
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"%pASP"))
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#define ASN_FORMAT_SPACE(mode) \
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((mode == ASNOTATION_DOT) ? "%10pASD" : \
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((mode == ASNOTATION_DOTPLUS) ? "%10pASE" : \
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"%10pASP"))
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/* for test */
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extern void asn_relax_as_zero(bool relax);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _FRR_ASN_H */
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