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declare ip6_hdr_pseudo (for kernel only) and use it for TCP MD5 signature

This commit is contained in:
itojun 2004-04-26 05:15:47 +00:00
parent ff04be0dcd
commit f103f9aee9
2 changed files with 25 additions and 15 deletions
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16
sys/netinet/ip6.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: ip6.h,v 1.16 2003/08/07 16:33:11 agc Exp $ */
/* $NetBSD: ip6.h,v 1.17 2004/04/26 05:15:47 itojun Exp $ */
/* $KAME: ip6.h,v 1.45 2003/06/05 04:46:38 keiichi Exp $ */
/*
@ -108,6 +108,20 @@ struct ip6_hdr {
#define IP6TOS_ECT 0x02 /* ECN-capable transport */
#endif
#ifdef _KERNEL
/*
* for IPv6 pseudo header checksum
* XXX nonstandard
*/
struct ip6_hdr_pseudo {
struct in6_addr ip6ph_src;
struct in6_addr ip6ph_dst;
u_int32_t ip6ph_len;
u_int8_t ip6ph_zero[3];
u_int8_t ip6ph_nxt;
} __attribute__((__packed__));
#endif
/*
* Extension Headers
*/

24
sys/netinet/tcp_subr.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: tcp_subr.c,v 1.168 2004/04/26 05:05:49 itojun Exp $ */
/* $NetBSD: tcp_subr.c,v 1.169 2004/04/26 05:15:47 itojun Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@ -98,7 +98,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: tcp_subr.c,v 1.168 2004/04/26 05:05:49 itojun Exp $");
__KERNEL_RCSID(0, "$NetBSD: tcp_subr.c,v 1.169 2004/04/26 05:15:47 itojun Exp $");
#include "opt_inet.h"
#include "opt_ipsec.h"
@ -1666,12 +1666,7 @@ tcp_signature_compute(struct mbuf *m, struct tcphdr *th, int thoff,
u_int16_t savecsum;
struct ippseudo ippseudo;
struct ip6_ext ip6e;
struct {
struct in6_addr src, dst;
u_int32_t len;
u_int8_t zero[3];
u_int8_t nxt;
} ip6pseudo;
struct ip6_hdr_pseudo ip6pseudo;
u_int8_t nxt;
KASSERT(m != NULL /*, ("NULL mbuf chain")*/);
@ -1761,12 +1756,13 @@ found:
htons(len + sizeof(struct tcphdr) + optlen);
MD5Update(&ctx, (char *)&ippseudo, sizeof(ippseudo));
} else {
ip6pseudo.src = ip6->ip6_src;
in6_clearscope(&ip6pseudo.src);
ip6pseudo.dst = ip6->ip6_dst;
in6_clearscope(&ip6pseudo.dst);
ip6pseudo.len = htonl(len + sizeof(struct tcphdr) + optlen);
ip6pseudo.nxt = IPPROTO_TCP;
ip6pseudo.ip6ph_src = ip6->ip6_src;
in6_clearscope(&ip6pseudo.ip6ph_src);
ip6pseudo.ip6ph_dst = ip6->ip6_dst;
in6_clearscope(&ip6pseudo.ip6ph_dst);
ip6pseudo.ip6ph_len =
htonl(len + sizeof(struct tcphdr) + optlen);
ip6pseudo.ip6ph_nxt = IPPROTO_TCP;
MD5Update(&ctx, (char *)&ip6pseudo, sizeof(ip6pseudo));
}