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itojun 2001-01-23 05:21:23 +00:00
parent 2f928e31d3
commit 8b3234d2f2
1 changed files with 29 additions and 27 deletions
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56
sys/netinet6/dest6.c
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@ -1,9 +1,10 @@
/* $NetBSD: dest6.c,v 1.7 2000/02/06 12:49:42 itojun Exp $ */
/* $NetBSD: dest6.c,v 1.8 2001/01/23 05:21:23 itojun Exp $ */
/* $KAME: dest6.c,v 1.14 2001/01/23 05:16:28 itojun Exp $ */
/*
* 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:
@ -15,7 +16,7 @@
* 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
@ -58,7 +59,7 @@ dest6_input(mp, offp, proto)
struct mbuf **mp;
int *offp, proto;
{
register struct mbuf *m = *mp;
struct mbuf *m = *mp;
int off = *offp, dstoptlen, optlen;
struct ip6_dest *dstopts;
u_int8_t *opt;
@ -88,34 +89,35 @@ dest6_input(mp, offp, proto)
/* 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;
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;
}
optlen = ip6_unknown_opt(opt, m,
opt - mtod(m, u_int8_t *));
if (optlen == -1)
return (IPPROTO_DONE);
optlen += 2;
break;
}
}
*offp = off;
return(dstopts->ip6d_nxt);
return (dstopts->ip6d_nxt);
bad:
m_freem(m);
return(IPPROTO_DONE);
return (IPPROTO_DONE);
}