mirror of
https://git.proxmox.com/git/mirror_frr
synced 2025-11-04 11:38:49 +00:00
600d28e311
According to RFC 5340 appendix A.4.1.1
0 1 2 3 4 5 6 7
+--+--+--+--+--+-+--+--+
| | | |DN| P|x|LA|NU|
+--+--+--+--+--+-+--+--+
Signed-off-by: ckishimo <carles.kishimoto@gmail.com>
94 lines
3.1 KiB
C
94 lines
3.1 KiB
C
/*
|
|
* Copyright (C) 2003 Yasuhiro Ohara
|
|
*
|
|
* This file is part of GNU Zebra.
|
|
*
|
|
* GNU Zebra is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2, or (at your option) any
|
|
* later version.
|
|
*
|
|
* GNU Zebra is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; see the file COPYING; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <zebra.h>
|
|
|
|
#include "log.h"
|
|
|
|
#include "ospf6_proto.h"
|
|
|
|
void ospf6_prefix_in6_addr(struct in6_addr *in6, const void *prefix_buf,
|
|
const struct ospf6_prefix *p)
|
|
{
|
|
ptrdiff_t in6_off = (caddr_t)p->addr - (caddr_t)prefix_buf;
|
|
|
|
memset(in6, 0, sizeof(struct in6_addr));
|
|
memcpy(in6, (uint8_t *)prefix_buf + in6_off,
|
|
OSPF6_PREFIX_SPACE(p->prefix_length));
|
|
}
|
|
|
|
void ospf6_prefix_apply_mask(struct ospf6_prefix *op)
|
|
{
|
|
uint8_t *pnt, mask;
|
|
int index, offset;
|
|
|
|
pnt = (uint8_t *)((caddr_t)op + sizeof(struct ospf6_prefix));
|
|
index = op->prefix_length / 8;
|
|
offset = op->prefix_length % 8;
|
|
mask = 0xff << (8 - offset);
|
|
|
|
if (index > 16) {
|
|
zlog_warn("Prefix length too long: %d", op->prefix_length);
|
|
return;
|
|
}
|
|
|
|
/* nonzero mask means no check for this byte because if it contains
|
|
* prefix bits it must be there for us to write */
|
|
if (mask)
|
|
pnt[index++] &= mask;
|
|
|
|
while (index < OSPF6_PREFIX_SPACE(op->prefix_length))
|
|
pnt[index++] = 0;
|
|
}
|
|
|
|
void ospf6_prefix_options_printbuf(uint8_t prefix_options, char *buf, int size)
|
|
{
|
|
const char *dn, *p, *mc, *la, *nu;
|
|
|
|
dn = (CHECK_FLAG(prefix_options, OSPF6_PREFIX_OPTION_DN) ? "DN" : "--");
|
|
p = (CHECK_FLAG(prefix_options, OSPF6_PREFIX_OPTION_P) ? "P" : "--");
|
|
mc = (CHECK_FLAG(prefix_options, OSPF6_PREFIX_OPTION_MC) ? "MC" : "--");
|
|
la = (CHECK_FLAG(prefix_options, OSPF6_PREFIX_OPTION_LA) ? "LA" : "--");
|
|
nu = (CHECK_FLAG(prefix_options, OSPF6_PREFIX_OPTION_NU) ? "NU" : "--");
|
|
snprintf(buf, size, "%s|%s|%s|%s|%s", dn, p, mc, la, nu);
|
|
}
|
|
|
|
void ospf6_capability_printbuf(char capability, char *buf, int size)
|
|
{
|
|
char w, v, e, b;
|
|
w = (capability & OSPF6_ROUTER_BIT_W ? 'W' : '-');
|
|
v = (capability & OSPF6_ROUTER_BIT_V ? 'V' : '-');
|
|
e = (capability & OSPF6_ROUTER_BIT_E ? 'E' : '-');
|
|
b = (capability & OSPF6_ROUTER_BIT_B ? 'B' : '-');
|
|
snprintf(buf, size, "----%c%c%c%c", w, v, e, b);
|
|
}
|
|
|
|
void ospf6_options_printbuf(uint8_t *options, char *buf, int size)
|
|
{
|
|
const char *dc, *r, *n, *mc, *e, *v6;
|
|
dc = (OSPF6_OPT_ISSET(options, OSPF6_OPT_DC) ? "DC" : "--");
|
|
r = (OSPF6_OPT_ISSET(options, OSPF6_OPT_R) ? "R" : "-");
|
|
n = (OSPF6_OPT_ISSET(options, OSPF6_OPT_N) ? "N" : "-");
|
|
mc = (OSPF6_OPT_ISSET(options, OSPF6_OPT_MC) ? "MC" : "--");
|
|
e = (OSPF6_OPT_ISSET(options, OSPF6_OPT_E) ? "E" : "-");
|
|
v6 = (OSPF6_OPT_ISSET(options, OSPF6_OPT_V6) ? "V6" : "--");
|
|
snprintf(buf, size, "%s|%s|%s|%s|%s|%s", dc, r, n, mc, e, v6);
|
|
}
|