diff options
author | Yoshinobu Inoue <shin@FreeBSD.org> | 1999-11-22 02:45:11 +0000 |
---|---|---|
committer | Yoshinobu Inoue <shin@FreeBSD.org> | 1999-11-22 02:45:11 +0000 |
commit | 82cd038d51e2fa970be77f4d59c56d3452fedec0 (patch) | |
tree | a147aa319428e26625f19209916c257b71cfd2e1 /sys/netinet6/dest6.c | |
parent | a7a9b4714df041a8a07e3fddbc0e21f8b816f13d (diff) | |
download | src-82cd038d51e2fa970be77f4d59c56d3452fedec0.tar.gz src-82cd038d51e2fa970be77f4d59c56d3452fedec0.zip |
KAME netinet6 basic part(no IPsec,no V6 Multicast Forwarding, no UDP/TCP
for IPv6 yet)
With this patch, you can assigne IPv6 addr automatically, and can reply to
IPv6 ping.
Reviewed by: freebsd-arch, cvs-committers
Obtained from: KAME project
Notes
Notes:
svn path=/head/; revision=53541
Diffstat (limited to 'sys/netinet6/dest6.c')
-rw-r--r-- | sys/netinet6/dest6.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/sys/netinet6/dest6.c b/sys/netinet6/dest6.c new file mode 100644 index 000000000000..403ed5de838e --- /dev/null +++ b/sys/netinet6/dest6.c @@ -0,0 +1,108 @@ +/* + * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/malloc.h> +#include <sys/mbuf.h> +#include <sys/domain.h> +#include <sys/protosw.h> +#include <sys/socket.h> +#include <sys/errno.h> +#include <sys/time.h> +#include <sys/kernel.h> + +#include <net/if.h> +#include <net/route.h> + +#include <netinet/in.h> +#include <netinet/in_var.h> +#include <netinet6/ip6.h> +#include <netinet6/ip6_var.h> +#include <netinet6/icmp6.h> + +/* + * Destination options header processing. + */ +int +dest6_input(mp, offp, proto) + struct mbuf **mp; + int *offp, proto; +{ + register struct mbuf *m = *mp; + int off = *offp, dstoptlen, optlen; + struct ip6_dest *dstopts; + u_int8_t *opt; + + /* validation of the length of the header */ + IP6_EXTHDR_CHECK(m, off, sizeof(*dstopts), IPPROTO_DONE); + dstopts = (struct ip6_dest *)(mtod(m, caddr_t) + off); + dstoptlen = (dstopts->ip6d_len + 1) << 3; + + IP6_EXTHDR_CHECK(m, off, dstoptlen, IPPROTO_DONE); + dstopts = (struct ip6_dest *)(mtod(m, caddr_t) + off); + off += dstoptlen; + dstoptlen -= sizeof(struct ip6_dest); + opt = (u_int8_t *)dstopts + sizeof(struct ip6_dest); + + /* search header for all options. */ + for (optlen = 0; dstoptlen > 0; dstoptlen -= optlen, opt += optlen) { + switch(*opt) { + case IP6OPT_PAD1: + optlen = 1; + break; + case IP6OPT_PADN: + if (dstoptlen < IP6OPT_MINLEN) { + ip6stat.ip6s_toosmall++; + goto bad; + } + optlen = *(opt + 1) + 2; + break; + default: /* unknown option */ + if (dstoptlen < IP6OPT_MINLEN) { + ip6stat.ip6s_toosmall++; + goto bad; + } + if ((optlen = ip6_unknown_opt(opt, m, + opt-mtod(m, u_int8_t *))) == -1) + return(IPPROTO_DONE); + optlen += 2; + break; + } + } + + *offp = off; + return(dstopts->ip6d_nxt); + + bad: + m_freem(m); + return(IPPROTO_DONE); +} |