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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
/*
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* Copyright (C) 2003 Yasuhiro Ohara
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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 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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* 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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#include <zebra.h>
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#include "log.h"
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#include "ospf6_proto.h"
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void ospf6_prefix_in6_addr(struct in6_addr *in6, const void *prefix_buf,
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const struct ospf6_prefix *p)
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{
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ptrdiff_t in6_off = (caddr_t)p->addr - (caddr_t)prefix_buf;
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memset(in6, 0, sizeof(struct in6_addr));
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memcpy(in6, (uint8_t *)prefix_buf + in6_off,
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OSPF6_PREFIX_SPACE(p->prefix_length));
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}
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void ospf6_prefix_apply_mask(struct ospf6_prefix *op)
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{
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uint8_t *pnt, mask;
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int index, offset;
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pnt = (uint8_t *)((caddr_t)op + sizeof(struct ospf6_prefix));
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index = op->prefix_length / 8;
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offset = op->prefix_length % 8;
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mask = 0xff << (8 - offset);
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if (index > 16) {
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zlog_warn("Prefix length too long: %d", op->prefix_length);
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return;
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}
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/* nonzero mask means no check for this byte because if it contains
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* prefix bits it must be there for us to write */
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if (mask)
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pnt[index++] &= mask;
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while (index < OSPF6_PREFIX_SPACE(op->prefix_length))
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pnt[index++] = 0;
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}
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void ospf6_prefix_options_printbuf(uint8_t prefix_options, char *buf, int size)
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{
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const char *dn, *p, *mc, *la, *nu;
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dn = (CHECK_FLAG(prefix_options, OSPF6_PREFIX_OPTION_DN) ? "DN" : "--");
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p = (CHECK_FLAG(prefix_options, OSPF6_PREFIX_OPTION_P) ? "P" : "--");
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mc = (CHECK_FLAG(prefix_options, OSPF6_PREFIX_OPTION_MC) ? "MC" : "--");
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la = (CHECK_FLAG(prefix_options, OSPF6_PREFIX_OPTION_LA) ? "LA" : "--");
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nu = (CHECK_FLAG(prefix_options, OSPF6_PREFIX_OPTION_NU) ? "NU" : "--");
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snprintf(buf, size, "%s|%s|%s|%s|%s", dn, p, mc, la, nu);
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}
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void ospf6_capability_printbuf(char capability, char *buf, int size)
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{
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char w, v, e, b;
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w = (capability & OSPF6_ROUTER_BIT_W ? 'W' : '-');
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v = (capability & OSPF6_ROUTER_BIT_V ? 'V' : '-');
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e = (capability & OSPF6_ROUTER_BIT_E ? 'E' : '-');
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b = (capability & OSPF6_ROUTER_BIT_B ? 'B' : '-');
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snprintf(buf, size, "----%c%c%c%c", w, v, e, b);
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}
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void ospf6_options_printbuf(uint8_t *options, char *buf, int size)
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{
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const char *dc, *r, *n, *mc, *e, *v6;
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dc = (OSPF6_OPT_ISSET(options, OSPF6_OPT_DC) ? "DC" : "--");
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r = (OSPF6_OPT_ISSET(options, OSPF6_OPT_R) ? "R" : "-");
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n = (OSPF6_OPT_ISSET(options, OSPF6_OPT_N) ? "N" : "-");
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mc = (OSPF6_OPT_ISSET(options, OSPF6_OPT_MC) ? "MC" : "--");
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e = (OSPF6_OPT_ISSET(options, OSPF6_OPT_E) ? "E" : "-");
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v6 = (OSPF6_OPT_ISSET(options, OSPF6_OPT_V6) ? "V6" : "--");
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snprintf(buf, size, "%s|%s|%s|%s|%s|%s", dc, r, n, mc, e, v6);
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}
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