2002-10-16 02:10:08 +00:00
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/* $FreeBSD$ */
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/* $OpenBSD: ip_ah.c,v 1.63 2001/06/26 06:18:58 angelos Exp $ */
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2005-01-07 01:45:51 +00:00
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/*-
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2002-10-16 02:10:08 +00:00
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* The authors of this code are John Ioannidis (ji@tla.org),
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* Angelos D. Keromytis (kermit@csd.uch.gr) and
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* Niels Provos (provos@physnet.uni-hamburg.de).
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*
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* The original version of this code was written by John Ioannidis
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* for BSD/OS in Athens, Greece, in November 1995.
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*
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* Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
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* by Angelos D. Keromytis.
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*
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* Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis
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* and Niels Provos.
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*
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* Additional features in 1999 by Angelos D. Keromytis and Niklas Hallqvist.
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*
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* Copyright (c) 1995, 1996, 1997, 1998, 1999 by John Ioannidis,
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* Angelos D. Keromytis and Niels Provos.
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* Copyright (c) 1999 Niklas Hallqvist.
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* Copyright (c) 2001 Angelos D. Keromytis.
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*
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* Permission to use, copy, and modify this software with or without fee
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* is hereby granted, provided that this entire notice is included in
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* all copies of any software which is or includes a copy or
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* modification of this software.
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* You may use this code under the GNU public license if you so wish. Please
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* contribute changes back to the authors under this freer than GPL license
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* so that we may further the use of strong encryption without limitations to
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* all.
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*
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* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
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* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
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* MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
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* PURPOSE.
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*/
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#include "opt_inet.h"
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#include "opt_inet6.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/syslog.h>
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#include <sys/kernel.h>
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#include <sys/sysctl.h>
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#include <net/if.h>
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Build on Jeff Roberson's linker-set based dynamic per-CPU allocator
(DPCPU), as suggested by Peter Wemm, and implement a new per-virtual
network stack memory allocator. Modify vnet to use the allocator
instead of monolithic global container structures (vinet, ...). This
change solves many binary compatibility problems associated with
VIMAGE, and restores ELF symbols for virtualized global variables.
Each virtualized global variable exists as a "reference copy", and also
once per virtual network stack. Virtualized global variables are
tagged at compile-time, placing the in a special linker set, which is
loaded into a contiguous region of kernel memory. Virtualized global
variables in the base kernel are linked as normal, but those in modules
are copied and relocated to a reserved portion of the kernel's vnet
region with the help of a the kernel linker.
Virtualized global variables exist in per-vnet memory set up when the
network stack instance is created, and are initialized statically from
the reference copy. Run-time access occurs via an accessor macro, which
converts from the current vnet and requested symbol to a per-vnet
address. When "options VIMAGE" is not compiled into the kernel, normal
global ELF symbols will be used instead and indirection is avoided.
This change restores static initialization for network stack global
variables, restores support for non-global symbols and types, eliminates
the need for many subsystem constructors, eliminates large per-subsystem
structures that caused many binary compatibility issues both for
monitoring applications (netstat) and kernel modules, removes the
per-function INIT_VNET_*() macros throughout the stack, eliminates the
need for vnet_symmap ksym(2) munging, and eliminates duplicate
definitions of virtualized globals under VIMAGE_GLOBALS.
Bump __FreeBSD_version and update UPDATING.
Portions submitted by: bz
Reviewed by: bz, zec
Discussed with: gnn, jamie, jeff, jhb, julian, sam
Suggested by: peter
Approved by: re (kensmith)
2009-07-14 22:48:30 +00:00
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#include <net/vnet.h>
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2002-10-16 02:10:08 +00:00
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip_ecn.h>
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#include <netinet/ip6.h>
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#include <net/route.h>
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#include <netipsec/ipsec.h>
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#include <netipsec/ah.h>
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#include <netipsec/ah_var.h>
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#include <netipsec/xform.h>
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#ifdef INET6
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#include <netinet6/ip6_var.h>
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#include <netipsec/ipsec6.h>
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#include <netinet6/ip6_ecn.h>
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#endif
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#include <netipsec/key.h>
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#include <netipsec/key_debug.h>
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#include <opencrypto/cryptodev.h>
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/*
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* Return header size in bytes. The old protocol did not support
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* the replay counter; the new protocol always includes the counter.
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*/
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#define HDRSIZE(sav) \
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(((sav)->flags & SADB_X_EXT_OLD) ? \
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sizeof (struct ah) : sizeof (struct ah) + sizeof (u_int32_t))
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/*
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* Return authenticator size in bytes. The old protocol is known
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2006-05-17 18:30:28 +00:00
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* to use a fixed 16-byte authenticator. The new algorithm use 12-byte
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* authenticator.
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2002-10-16 02:10:08 +00:00
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*/
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2011-02-18 09:40:13 +00:00
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#define AUTHSIZE(sav) ah_authsize(sav)
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2002-10-16 02:10:08 +00:00
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|
Build on Jeff Roberson's linker-set based dynamic per-CPU allocator
(DPCPU), as suggested by Peter Wemm, and implement a new per-virtual
network stack memory allocator. Modify vnet to use the allocator
instead of monolithic global container structures (vinet, ...). This
change solves many binary compatibility problems associated with
VIMAGE, and restores ELF symbols for virtualized global variables.
Each virtualized global variable exists as a "reference copy", and also
once per virtual network stack. Virtualized global variables are
tagged at compile-time, placing the in a special linker set, which is
loaded into a contiguous region of kernel memory. Virtualized global
variables in the base kernel are linked as normal, but those in modules
are copied and relocated to a reserved portion of the kernel's vnet
region with the help of a the kernel linker.
Virtualized global variables exist in per-vnet memory set up when the
network stack instance is created, and are initialized statically from
the reference copy. Run-time access occurs via an accessor macro, which
converts from the current vnet and requested symbol to a per-vnet
address. When "options VIMAGE" is not compiled into the kernel, normal
global ELF symbols will be used instead and indirection is avoided.
This change restores static initialization for network stack global
variables, restores support for non-global symbols and types, eliminates
the need for many subsystem constructors, eliminates large per-subsystem
structures that caused many binary compatibility issues both for
monitoring applications (netstat) and kernel modules, removes the
per-function INIT_VNET_*() macros throughout the stack, eliminates the
need for vnet_symmap ksym(2) munging, and eliminates duplicate
definitions of virtualized globals under VIMAGE_GLOBALS.
Bump __FreeBSD_version and update UPDATING.
Portions submitted by: bz
Reviewed by: bz, zec
Discussed with: gnn, jamie, jeff, jhb, julian, sam
Suggested by: peter
Approved by: re (kensmith)
2009-07-14 22:48:30 +00:00
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VNET_DEFINE(int, ah_enable) = 1; /* control flow of packets with AH */
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VNET_DEFINE(int, ah_cleartos) = 1; /* clear ip_tos when doing AH calc */
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VNET_DEFINE(struct ahstat, ahstat);
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2002-10-16 02:10:08 +00:00
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2011-04-27 19:28:42 +00:00
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#ifdef INET
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2002-10-16 02:10:08 +00:00
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SYSCTL_DECL(_net_inet_ah);
|
Build on Jeff Roberson's linker-set based dynamic per-CPU allocator
(DPCPU), as suggested by Peter Wemm, and implement a new per-virtual
network stack memory allocator. Modify vnet to use the allocator
instead of monolithic global container structures (vinet, ...). This
change solves many binary compatibility problems associated with
VIMAGE, and restores ELF symbols for virtualized global variables.
Each virtualized global variable exists as a "reference copy", and also
once per virtual network stack. Virtualized global variables are
tagged at compile-time, placing the in a special linker set, which is
loaded into a contiguous region of kernel memory. Virtualized global
variables in the base kernel are linked as normal, but those in modules
are copied and relocated to a reserved portion of the kernel's vnet
region with the help of a the kernel linker.
Virtualized global variables exist in per-vnet memory set up when the
network stack instance is created, and are initialized statically from
the reference copy. Run-time access occurs via an accessor macro, which
converts from the current vnet and requested symbol to a per-vnet
address. When "options VIMAGE" is not compiled into the kernel, normal
global ELF symbols will be used instead and indirection is avoided.
This change restores static initialization for network stack global
variables, restores support for non-global symbols and types, eliminates
the need for many subsystem constructors, eliminates large per-subsystem
structures that caused many binary compatibility issues both for
monitoring applications (netstat) and kernel modules, removes the
per-function INIT_VNET_*() macros throughout the stack, eliminates the
need for vnet_symmap ksym(2) munging, and eliminates duplicate
definitions of virtualized globals under VIMAGE_GLOBALS.
Bump __FreeBSD_version and update UPDATING.
Portions submitted by: bz
Reviewed by: bz, zec
Discussed with: gnn, jamie, jeff, jhb, julian, sam
Suggested by: peter
Approved by: re (kensmith)
2009-07-14 22:48:30 +00:00
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SYSCTL_VNET_INT(_net_inet_ah, OID_AUTO,
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ah_enable, CTLFLAG_RW, &VNET_NAME(ah_enable), 0, "");
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SYSCTL_VNET_INT(_net_inet_ah, OID_AUTO,
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ah_cleartos, CTLFLAG_RW, &VNET_NAME(ah_cleartos), 0, "");
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SYSCTL_VNET_STRUCT(_net_inet_ah, IPSECCTL_STATS,
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stats, CTLFLAG_RD, &VNET_NAME(ahstat), ahstat, "");
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2011-04-27 19:28:42 +00:00
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#endif
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2002-10-16 02:10:08 +00:00
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static unsigned char ipseczeroes[256]; /* larger than an ip6 extension hdr */
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static int ah_input_cb(struct cryptop*);
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static int ah_output_cb(struct cryptop*);
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2011-02-18 09:40:13 +00:00
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static int
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ah_authsize(struct secasvar *sav)
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{
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IPSEC_ASSERT(sav != NULL, ("%s: sav == NULL", __func__));
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if (sav->flags & SADB_X_EXT_OLD)
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return 16;
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switch (sav->alg_auth) {
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case SADB_X_AALG_SHA2_256:
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return 16;
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case SADB_X_AALG_SHA2_384:
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return 24;
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case SADB_X_AALG_SHA2_512:
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return 32;
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default:
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return AH_HMAC_HASHLEN;
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}
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/* NOTREACHED */
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}
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2002-10-16 02:10:08 +00:00
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/*
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* NB: this is public for use by the PF_KEY support.
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*/
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struct auth_hash *
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ah_algorithm_lookup(int alg)
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{
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2007-07-01 11:41:27 +00:00
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if (alg > SADB_AALG_MAX)
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2002-10-16 02:10:08 +00:00
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return NULL;
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switch (alg) {
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case SADB_X_AALG_NULL:
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return &auth_hash_null;
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case SADB_AALG_MD5HMAC:
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2006-05-17 18:30:28 +00:00
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return &auth_hash_hmac_md5;
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2002-10-16 02:10:08 +00:00
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case SADB_AALG_SHA1HMAC:
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2006-05-17 18:30:28 +00:00
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return &auth_hash_hmac_sha1;
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2002-10-16 02:10:08 +00:00
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case SADB_X_AALG_RIPEMD160HMAC:
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2006-05-17 18:30:28 +00:00
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return &auth_hash_hmac_ripemd_160;
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2002-10-16 02:10:08 +00:00
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case SADB_X_AALG_MD5:
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return &auth_hash_key_md5;
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case SADB_X_AALG_SHA:
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return &auth_hash_key_sha1;
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case SADB_X_AALG_SHA2_256:
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return &auth_hash_hmac_sha2_256;
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case SADB_X_AALG_SHA2_384:
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return &auth_hash_hmac_sha2_384;
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case SADB_X_AALG_SHA2_512:
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return &auth_hash_hmac_sha2_512;
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}
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return NULL;
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}
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size_t
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ah_hdrsiz(struct secasvar *sav)
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{
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size_t size;
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if (sav != NULL) {
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int authsize;
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2003-09-29 22:57:43 +00:00
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IPSEC_ASSERT(sav->tdb_authalgxform != NULL, ("null xform"));
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2002-10-16 02:10:08 +00:00
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/*XXX not right for null algorithm--does it matter??*/
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authsize = AUTHSIZE(sav);
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size = roundup(authsize, sizeof (u_int32_t)) + HDRSIZE(sav);
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} else {
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/* default guess */
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size = sizeof (struct ah) + sizeof (u_int32_t) + 16;
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}
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return size;
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}
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/*
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* NB: public for use by esp_init.
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*/
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int
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ah_init0(struct secasvar *sav, struct xformsw *xsp, struct cryptoini *cria)
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{
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struct auth_hash *thash;
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int keylen;
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thash = ah_algorithm_lookup(sav->alg_auth);
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if (thash == NULL) {
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2003-09-29 22:57:43 +00:00
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DPRINTF(("%s: unsupported authentication algorithm %u\n",
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__func__, sav->alg_auth));
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2002-10-16 02:10:08 +00:00
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return EINVAL;
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}
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/*
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* Verify the replay state block allocation is consistent with
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* the protocol type. We check here so we can make assumptions
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* later during protocol processing.
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*/
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/* NB: replay state is setup elsewhere (sigh) */
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if (((sav->flags&SADB_X_EXT_OLD) == 0) ^ (sav->replay != NULL)) {
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2003-09-29 22:57:43 +00:00
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DPRINTF(("%s: replay state block inconsistency, "
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"%s algorithm %s replay state\n", __func__,
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2002-10-16 02:10:08 +00:00
|
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(sav->flags & SADB_X_EXT_OLD) ? "old" : "new",
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sav->replay == NULL ? "without" : "with"));
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return EINVAL;
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}
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if (sav->key_auth == NULL) {
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2003-09-29 22:57:43 +00:00
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DPRINTF(("%s: no authentication key for %s algorithm\n",
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__func__, thash->name));
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2002-10-16 02:10:08 +00:00
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return EINVAL;
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}
|
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keylen = _KEYLEN(sav->key_auth);
|
|
|
|
if (keylen != thash->keysize && thash->keysize != 0) {
|
2003-09-29 22:57:43 +00:00
|
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|
DPRINTF(("%s: invalid keylength %d, algorithm %s requires "
|
|
|
|
"keysize %d\n", __func__,
|
2002-10-16 02:10:08 +00:00
|
|
|
keylen, thash->name, thash->keysize));
|
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|
return EINVAL;
|
|
|
|
}
|
|
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|
|
|
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|
sav->tdb_xform = xsp;
|
|
|
|
sav->tdb_authalgxform = thash;
|
|
|
|
|
|
|
|
/* Initialize crypto session. */
|
|
|
|
bzero(cria, sizeof (*cria));
|
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|
|
cria->cri_alg = sav->tdb_authalgxform->type;
|
|
|
|
cria->cri_klen = _KEYBITS(sav->key_auth);
|
2006-03-25 13:38:52 +00:00
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|
cria->cri_key = sav->key_auth->key_data;
|
2006-05-17 18:30:28 +00:00
|
|
|
cria->cri_mlen = AUTHSIZE(sav);
|
2002-10-16 02:10:08 +00:00
|
|
|
|
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|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ah_init() is called when an SPI is being set up.
|
|
|
|
*/
|
|
|
|
static int
|
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|
|
ah_init(struct secasvar *sav, struct xformsw *xsp)
|
|
|
|
{
|
|
|
|
struct cryptoini cria;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
error = ah_init0(sav, xsp, &cria);
|
|
|
|
return error ? error :
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
crypto_newsession(&sav->tdb_cryptoid, &cria, V_crypto_support);
|
2002-10-16 02:10:08 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Paranoia.
|
|
|
|
*
|
|
|
|
* NB: public for use by esp_zeroize (XXX).
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
ah_zeroize(struct secasvar *sav)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (sav->key_auth)
|
2006-03-25 13:38:52 +00:00
|
|
|
bzero(sav->key_auth->key_data, _KEYLEN(sav->key_auth));
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
err = crypto_freesession(sav->tdb_cryptoid);
|
|
|
|
sav->tdb_cryptoid = 0;
|
|
|
|
sav->tdb_authalgxform = NULL;
|
|
|
|
sav->tdb_xform = NULL;
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Massage IPv4/IPv6 headers for AH processing.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
ah_massage_headers(struct mbuf **m0, int proto, int skip, int alg, int out)
|
|
|
|
{
|
|
|
|
struct mbuf *m = *m0;
|
|
|
|
unsigned char *ptr;
|
|
|
|
int off, count;
|
|
|
|
|
|
|
|
#ifdef INET
|
|
|
|
struct ip *ip;
|
|
|
|
#endif /* INET */
|
|
|
|
|
|
|
|
#ifdef INET6
|
|
|
|
struct ip6_ext *ip6e;
|
|
|
|
struct ip6_hdr ip6;
|
|
|
|
int alloc, len, ad;
|
|
|
|
#endif /* INET6 */
|
|
|
|
|
|
|
|
switch (proto) {
|
|
|
|
#ifdef INET
|
|
|
|
case AF_INET:
|
|
|
|
/*
|
|
|
|
* This is the least painful way of dealing with IPv4 header
|
|
|
|
* and option processing -- just make sure they're in
|
|
|
|
* contiguous memory.
|
|
|
|
*/
|
|
|
|
*m0 = m = m_pullup(m, skip);
|
|
|
|
if (m == NULL) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: m_pullup failed\n", __func__));
|
2002-10-16 02:10:08 +00:00
|
|
|
return ENOBUFS;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Fix the IP header */
|
|
|
|
ip = mtod(m, struct ip *);
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
if (V_ah_cleartos)
|
2002-10-16 02:10:08 +00:00
|
|
|
ip->ip_tos = 0;
|
|
|
|
ip->ip_ttl = 0;
|
|
|
|
ip->ip_sum = 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* On input, fix ip_len which has been byte-swapped
|
|
|
|
* at ip_input().
|
|
|
|
*/
|
|
|
|
if (!out) {
|
|
|
|
ip->ip_len = htons(ip->ip_len + skip);
|
|
|
|
|
|
|
|
if (alg == CRYPTO_MD5_KPDK || alg == CRYPTO_SHA1_KPDK)
|
|
|
|
ip->ip_off = htons(ip->ip_off & IP_DF);
|
|
|
|
else
|
|
|
|
ip->ip_off = 0;
|
|
|
|
} else {
|
|
|
|
if (alg == CRYPTO_MD5_KPDK || alg == CRYPTO_SHA1_KPDK)
|
|
|
|
ip->ip_off = htons(ntohs(ip->ip_off) & IP_DF);
|
|
|
|
else
|
|
|
|
ip->ip_off = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
ptr = mtod(m, unsigned char *) + sizeof(struct ip);
|
|
|
|
|
|
|
|
/* IPv4 option processing */
|
|
|
|
for (off = sizeof(struct ip); off < skip;) {
|
|
|
|
if (ptr[off] == IPOPT_EOL || ptr[off] == IPOPT_NOP ||
|
|
|
|
off + 1 < skip)
|
|
|
|
;
|
|
|
|
else {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: illegal IPv4 option length for "
|
|
|
|
"option %d\n", __func__, ptr[off]));
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
m_freem(m);
|
|
|
|
return EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (ptr[off]) {
|
|
|
|
case IPOPT_EOL:
|
|
|
|
off = skip; /* End the loop. */
|
|
|
|
break;
|
|
|
|
|
|
|
|
case IPOPT_NOP:
|
|
|
|
off++;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case IPOPT_SECURITY: /* 0x82 */
|
|
|
|
case 0x85: /* Extended security. */
|
|
|
|
case 0x86: /* Commercial security. */
|
|
|
|
case 0x94: /* Router alert */
|
|
|
|
case 0x95: /* RFC1770 */
|
|
|
|
/* Sanity check for option length. */
|
|
|
|
if (ptr[off + 1] < 2) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: illegal IPv4 option "
|
|
|
|
"length for option %d\n",
|
|
|
|
__func__, ptr[off]));
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
m_freem(m);
|
|
|
|
return EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
off += ptr[off + 1];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case IPOPT_LSRR:
|
|
|
|
case IPOPT_SSRR:
|
|
|
|
/* Sanity check for option length. */
|
|
|
|
if (ptr[off + 1] < 2) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: illegal IPv4 option "
|
|
|
|
"length for option %d\n",
|
|
|
|
__func__, ptr[off]));
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
m_freem(m);
|
|
|
|
return EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* On output, if we have either of the
|
|
|
|
* source routing options, we should
|
|
|
|
* swap the destination address of the
|
|
|
|
* IP header with the last address
|
|
|
|
* specified in the option, as that is
|
|
|
|
* what the destination's IP header
|
|
|
|
* will look like.
|
|
|
|
*/
|
|
|
|
if (out)
|
|
|
|
bcopy(ptr + off + ptr[off + 1] -
|
|
|
|
sizeof(struct in_addr),
|
|
|
|
&(ip->ip_dst), sizeof(struct in_addr));
|
|
|
|
|
|
|
|
/* Fall through */
|
|
|
|
default:
|
|
|
|
/* Sanity check for option length. */
|
|
|
|
if (ptr[off + 1] < 2) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: illegal IPv4 option "
|
|
|
|
"length for option %d\n",
|
|
|
|
__func__, ptr[off]));
|
2002-10-16 02:10:08 +00:00
|
|
|
m_freem(m);
|
|
|
|
return EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Zeroize all other options. */
|
|
|
|
count = ptr[off + 1];
|
|
|
|
bcopy(ipseczeroes, ptr, count);
|
|
|
|
off += count;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Sanity check. */
|
|
|
|
if (off > skip) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: malformed IPv4 options header\n",
|
|
|
|
__func__));
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
m_freem(m);
|
|
|
|
return EINVAL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
#endif /* INET */
|
|
|
|
|
|
|
|
#ifdef INET6
|
|
|
|
case AF_INET6: /* Ugly... */
|
|
|
|
/* Copy and "cook" the IPv6 header. */
|
|
|
|
m_copydata(m, 0, sizeof(ip6), (caddr_t) &ip6);
|
|
|
|
|
|
|
|
/* We don't do IPv6 Jumbograms. */
|
|
|
|
if (ip6.ip6_plen == 0) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: unsupported IPv6 jumbogram\n", __func__));
|
2002-10-16 02:10:08 +00:00
|
|
|
m_freem(m);
|
|
|
|
return EMSGSIZE;
|
|
|
|
}
|
|
|
|
|
|
|
|
ip6.ip6_flow = 0;
|
|
|
|
ip6.ip6_hlim = 0;
|
|
|
|
ip6.ip6_vfc &= ~IPV6_VERSION_MASK;
|
|
|
|
ip6.ip6_vfc |= IPV6_VERSION;
|
|
|
|
|
|
|
|
/* Scoped address handling. */
|
|
|
|
if (IN6_IS_SCOPE_LINKLOCAL(&ip6.ip6_src))
|
|
|
|
ip6.ip6_src.s6_addr16[1] = 0;
|
|
|
|
if (IN6_IS_SCOPE_LINKLOCAL(&ip6.ip6_dst))
|
|
|
|
ip6.ip6_dst.s6_addr16[1] = 0;
|
|
|
|
|
|
|
|
/* Done with IPv6 header. */
|
|
|
|
m_copyback(m, 0, sizeof(struct ip6_hdr), (caddr_t) &ip6);
|
|
|
|
|
|
|
|
/* Let's deal with the remaining headers (if any). */
|
|
|
|
if (skip - sizeof(struct ip6_hdr) > 0) {
|
|
|
|
if (m->m_len <= skip) {
|
|
|
|
ptr = (unsigned char *) malloc(
|
|
|
|
skip - sizeof(struct ip6_hdr),
|
|
|
|
M_XDATA, M_NOWAIT);
|
|
|
|
if (ptr == NULL) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: failed to allocate memory"
|
|
|
|
"for IPv6 headers\n",__func__));
|
2002-10-16 02:10:08 +00:00
|
|
|
m_freem(m);
|
|
|
|
return ENOBUFS;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Copy all the protocol headers after
|
|
|
|
* the IPv6 header.
|
|
|
|
*/
|
|
|
|
m_copydata(m, sizeof(struct ip6_hdr),
|
|
|
|
skip - sizeof(struct ip6_hdr), ptr);
|
|
|
|
alloc = 1;
|
|
|
|
} else {
|
|
|
|
/* No need to allocate memory. */
|
|
|
|
ptr = mtod(m, unsigned char *) +
|
|
|
|
sizeof(struct ip6_hdr);
|
|
|
|
alloc = 0;
|
|
|
|
}
|
|
|
|
} else
|
|
|
|
break;
|
|
|
|
|
|
|
|
off = ip6.ip6_nxt & 0xff; /* Next header type. */
|
|
|
|
|
|
|
|
for (len = 0; len < skip - sizeof(struct ip6_hdr);)
|
|
|
|
switch (off) {
|
|
|
|
case IPPROTO_HOPOPTS:
|
|
|
|
case IPPROTO_DSTOPTS:
|
|
|
|
ip6e = (struct ip6_ext *) (ptr + len);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Process the mutable/immutable
|
|
|
|
* options -- borrows heavily from the
|
|
|
|
* KAME code.
|
|
|
|
*/
|
|
|
|
for (count = len + sizeof(struct ip6_ext);
|
|
|
|
count < len + ((ip6e->ip6e_len + 1) << 3);) {
|
|
|
|
if (ptr[count] == IP6OPT_PAD1) {
|
|
|
|
count++;
|
|
|
|
continue; /* Skip padding. */
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Sanity check. */
|
|
|
|
if (count > len +
|
|
|
|
((ip6e->ip6e_len + 1) << 3)) {
|
|
|
|
m_freem(m);
|
|
|
|
|
|
|
|
/* Free, if we allocated. */
|
|
|
|
if (alloc)
|
2008-10-23 15:53:51 +00:00
|
|
|
free(ptr, M_XDATA);
|
2002-10-16 02:10:08 +00:00
|
|
|
return EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
ad = ptr[count + 1];
|
|
|
|
|
|
|
|
/* If mutable option, zeroize. */
|
|
|
|
if (ptr[count] & IP6OPT_MUTABLE)
|
|
|
|
bcopy(ipseczeroes, ptr + count,
|
|
|
|
ptr[count + 1]);
|
|
|
|
|
|
|
|
count += ad;
|
|
|
|
|
|
|
|
/* Sanity check. */
|
|
|
|
if (count >
|
|
|
|
skip - sizeof(struct ip6_hdr)) {
|
|
|
|
m_freem(m);
|
|
|
|
|
|
|
|
/* Free, if we allocated. */
|
|
|
|
if (alloc)
|
2008-10-23 15:53:51 +00:00
|
|
|
free(ptr, M_XDATA);
|
2002-10-16 02:10:08 +00:00
|
|
|
return EINVAL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Advance. */
|
|
|
|
len += ((ip6e->ip6e_len + 1) << 3);
|
|
|
|
off = ip6e->ip6e_nxt;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case IPPROTO_ROUTING:
|
|
|
|
/*
|
|
|
|
* Always include routing headers in
|
|
|
|
* computation.
|
|
|
|
*/
|
|
|
|
ip6e = (struct ip6_ext *) (ptr + len);
|
|
|
|
len += ((ip6e->ip6e_len + 1) << 3);
|
|
|
|
off = ip6e->ip6e_nxt;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: unexpected IPv6 header type %d",
|
|
|
|
__func__, off));
|
2002-10-16 02:10:08 +00:00
|
|
|
if (alloc)
|
2008-10-23 15:53:51 +00:00
|
|
|
free(ptr, M_XDATA);
|
2002-10-16 02:10:08 +00:00
|
|
|
m_freem(m);
|
|
|
|
return EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Copyback and free, if we allocated. */
|
|
|
|
if (alloc) {
|
|
|
|
m_copyback(m, sizeof(struct ip6_hdr),
|
|
|
|
skip - sizeof(struct ip6_hdr), ptr);
|
|
|
|
free(ptr, M_XDATA);
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
#endif /* INET6 */
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ah_input() gets called to verify that an input packet
|
|
|
|
* passes authentication.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
ah_input(struct mbuf *m, struct secasvar *sav, int skip, int protoff)
|
|
|
|
{
|
|
|
|
struct auth_hash *ahx;
|
|
|
|
struct tdb_ident *tdbi;
|
|
|
|
struct tdb_crypto *tc;
|
|
|
|
struct m_tag *mtag;
|
|
|
|
struct newah *ah;
|
|
|
|
int hl, rplen, authsize;
|
|
|
|
|
|
|
|
struct cryptodesc *crda;
|
|
|
|
struct cryptop *crp;
|
|
|
|
|
2003-09-29 22:57:43 +00:00
|
|
|
IPSEC_ASSERT(sav != NULL, ("null SA"));
|
|
|
|
IPSEC_ASSERT(sav->key_auth != NULL, ("null authentication key"));
|
|
|
|
IPSEC_ASSERT(sav->tdb_authalgxform != NULL,
|
|
|
|
("null authentication xform"));
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
/* Figure out header size. */
|
|
|
|
rplen = HDRSIZE(sav);
|
|
|
|
|
|
|
|
/* XXX don't pullup, just copy header */
|
|
|
|
IP6_EXTHDR_GET(ah, struct newah *, m, skip, rplen);
|
|
|
|
if (ah == NULL) {
|
|
|
|
DPRINTF(("ah_input: cannot pullup header\n"));
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_hdrops++; /*XXX*/
|
2002-10-16 02:10:08 +00:00
|
|
|
m_freem(m);
|
|
|
|
return ENOBUFS;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check replay window, if applicable. */
|
|
|
|
if (sav->replay && !ipsec_chkreplay(ntohl(ah->ah_seq), sav)) {
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_replay++;
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: packet replay failure: %s\n", __func__,
|
2002-10-16 02:10:08 +00:00
|
|
|
ipsec_logsastr(sav)));
|
|
|
|
m_freem(m);
|
|
|
|
return ENOBUFS;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Verify AH header length. */
|
|
|
|
hl = ah->ah_len * sizeof (u_int32_t);
|
|
|
|
ahx = sav->tdb_authalgxform;
|
|
|
|
authsize = AUTHSIZE(sav);
|
|
|
|
if (hl != authsize + rplen - sizeof (struct ah)) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: bad authenticator length %u (expecting %lu)"
|
|
|
|
" for packet in SA %s/%08lx\n", __func__,
|
2002-10-16 02:10:08 +00:00
|
|
|
hl, (u_long) (authsize + rplen - sizeof (struct ah)),
|
|
|
|
ipsec_address(&sav->sah->saidx.dst),
|
|
|
|
(u_long) ntohl(sav->spi)));
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_badauthl++;
|
2002-10-16 02:10:08 +00:00
|
|
|
m_freem(m);
|
|
|
|
return EACCES;
|
|
|
|
}
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_ibytes += m->m_pkthdr.len - skip - hl;
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
/* Get crypto descriptors. */
|
|
|
|
crp = crypto_getreq(1);
|
|
|
|
if (crp == NULL) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: failed to acquire crypto descriptor\n",__func__));
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_crypto++;
|
2002-10-16 02:10:08 +00:00
|
|
|
m_freem(m);
|
|
|
|
return ENOBUFS;
|
|
|
|
}
|
|
|
|
|
|
|
|
crda = crp->crp_desc;
|
2003-09-29 22:57:43 +00:00
|
|
|
IPSEC_ASSERT(crda != NULL, ("null crypto descriptor"));
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
crda->crd_skip = 0;
|
|
|
|
crda->crd_len = m->m_pkthdr.len;
|
|
|
|
crda->crd_inject = skip + rplen;
|
|
|
|
|
|
|
|
/* Authentication operation. */
|
|
|
|
crda->crd_alg = ahx->type;
|
|
|
|
crda->crd_klen = _KEYBITS(sav->key_auth);
|
2006-03-25 13:38:52 +00:00
|
|
|
crda->crd_key = sav->key_auth->key_data;
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
/* Find out if we've already done crypto. */
|
|
|
|
for (mtag = m_tag_find(m, PACKET_TAG_IPSEC_IN_CRYPTO_DONE, NULL);
|
|
|
|
mtag != NULL;
|
|
|
|
mtag = m_tag_find(m, PACKET_TAG_IPSEC_IN_CRYPTO_DONE, mtag)) {
|
|
|
|
tdbi = (struct tdb_ident *) (mtag + 1);
|
|
|
|
if (tdbi->proto == sav->sah->saidx.proto &&
|
|
|
|
tdbi->spi == sav->spi &&
|
|
|
|
!bcmp(&tdbi->dst, &sav->sah->saidx.dst,
|
|
|
|
sizeof (union sockaddr_union)))
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Allocate IPsec-specific opaque crypto info. */
|
|
|
|
if (mtag == NULL) {
|
|
|
|
tc = (struct tdb_crypto *) malloc(sizeof (struct tdb_crypto) +
|
|
|
|
skip + rplen + authsize, M_XDATA, M_NOWAIT|M_ZERO);
|
|
|
|
} else {
|
|
|
|
/* Hash verification has already been done successfully. */
|
|
|
|
tc = (struct tdb_crypto *) malloc(sizeof (struct tdb_crypto),
|
|
|
|
M_XDATA, M_NOWAIT|M_ZERO);
|
|
|
|
}
|
|
|
|
if (tc == NULL) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: failed to allocate tdb_crypto\n", __func__));
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_crypto++;
|
2002-10-16 02:10:08 +00:00
|
|
|
crypto_freereq(crp);
|
|
|
|
m_freem(m);
|
|
|
|
return ENOBUFS;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Only save information if crypto processing is needed. */
|
|
|
|
if (mtag == NULL) {
|
|
|
|
int error;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Save the authenticator, the skipped portion of the packet,
|
|
|
|
* and the AH header.
|
|
|
|
*/
|
|
|
|
m_copydata(m, 0, skip + rplen + authsize, (caddr_t)(tc+1));
|
|
|
|
|
|
|
|
/* Zeroize the authenticator on the packet. */
|
|
|
|
m_copyback(m, skip + rplen, authsize, ipseczeroes);
|
|
|
|
|
|
|
|
/* "Massage" the packet headers for crypto processing. */
|
|
|
|
error = ah_massage_headers(&m, sav->sah->saidx.dst.sa.sa_family,
|
|
|
|
skip, ahx->type, 0);
|
|
|
|
if (error != 0) {
|
|
|
|
/* NB: mbuf is free'd by ah_massage_headers */
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_hdrops++;
|
2002-10-16 02:10:08 +00:00
|
|
|
free(tc, M_XDATA);
|
|
|
|
crypto_freereq(crp);
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Crypto operation descriptor. */
|
|
|
|
crp->crp_ilen = m->m_pkthdr.len; /* Total input length. */
|
2003-06-30 05:09:32 +00:00
|
|
|
crp->crp_flags = CRYPTO_F_IMBUF | CRYPTO_F_CBIFSYNC;
|
2002-10-16 02:10:08 +00:00
|
|
|
crp->crp_buf = (caddr_t) m;
|
|
|
|
crp->crp_callback = ah_input_cb;
|
|
|
|
crp->crp_sid = sav->tdb_cryptoid;
|
|
|
|
crp->crp_opaque = (caddr_t) tc;
|
|
|
|
|
|
|
|
/* These are passed as-is to the callback. */
|
|
|
|
tc->tc_spi = sav->spi;
|
|
|
|
tc->tc_dst = sav->sah->saidx.dst;
|
|
|
|
tc->tc_proto = sav->sah->saidx.proto;
|
|
|
|
tc->tc_nxt = ah->ah_nxt;
|
|
|
|
tc->tc_protoff = protoff;
|
|
|
|
tc->tc_skip = skip;
|
|
|
|
tc->tc_ptr = (caddr_t) mtag; /* Save the mtag we've identified. */
|
2011-03-31 15:23:32 +00:00
|
|
|
KEY_ADDREFSA(sav);
|
|
|
|
tc->tc_sav = sav;
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
if (mtag == NULL)
|
|
|
|
return crypto_dispatch(crp);
|
|
|
|
else
|
|
|
|
return ah_input_cb(crp);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* AH input callback from the crypto driver.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
ah_input_cb(struct cryptop *crp)
|
|
|
|
{
|
|
|
|
int rplen, error, skip, protoff;
|
|
|
|
unsigned char calc[AH_ALEN_MAX];
|
|
|
|
struct mbuf *m;
|
|
|
|
struct cryptodesc *crd;
|
|
|
|
struct auth_hash *ahx;
|
|
|
|
struct tdb_crypto *tc;
|
|
|
|
struct m_tag *mtag;
|
|
|
|
struct secasvar *sav;
|
|
|
|
struct secasindex *saidx;
|
|
|
|
u_int8_t nxt;
|
|
|
|
caddr_t ptr;
|
2003-09-01 05:35:55 +00:00
|
|
|
int authsize;
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
crd = crp->crp_desc;
|
|
|
|
|
|
|
|
tc = (struct tdb_crypto *) crp->crp_opaque;
|
2003-09-29 22:57:43 +00:00
|
|
|
IPSEC_ASSERT(tc != NULL, ("null opaque crypto data area!"));
|
2002-10-16 02:10:08 +00:00
|
|
|
skip = tc->tc_skip;
|
|
|
|
nxt = tc->tc_nxt;
|
|
|
|
protoff = tc->tc_protoff;
|
|
|
|
mtag = (struct m_tag *) tc->tc_ptr;
|
|
|
|
m = (struct mbuf *) crp->crp_buf;
|
|
|
|
|
2011-03-31 15:23:32 +00:00
|
|
|
sav = tc->tc_sav;
|
|
|
|
IPSEC_ASSERT(sav != NULL, ("null SA!"));
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
saidx = &sav->sah->saidx;
|
2003-09-29 22:57:43 +00:00
|
|
|
IPSEC_ASSERT(saidx->dst.sa.sa_family == AF_INET ||
|
2002-10-16 02:10:08 +00:00
|
|
|
saidx->dst.sa.sa_family == AF_INET6,
|
2003-09-29 22:57:43 +00:00
|
|
|
("unexpected protocol family %u", saidx->dst.sa.sa_family));
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
ahx = (struct auth_hash *) sav->tdb_authalgxform;
|
|
|
|
|
|
|
|
/* Check for crypto errors. */
|
|
|
|
if (crp->crp_etype) {
|
|
|
|
if (sav->tdb_cryptoid != 0)
|
|
|
|
sav->tdb_cryptoid = crp->crp_sid;
|
|
|
|
|
2006-03-23 23:26:34 +00:00
|
|
|
if (crp->crp_etype == EAGAIN) {
|
|
|
|
error = crypto_dispatch(crp);
|
|
|
|
return error;
|
|
|
|
}
|
2002-10-16 02:10:08 +00:00
|
|
|
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_noxform++;
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: crypto error %d\n", __func__, crp->crp_etype));
|
2002-10-16 02:10:08 +00:00
|
|
|
error = crp->crp_etype;
|
|
|
|
goto bad;
|
|
|
|
} else {
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_hist[sav->alg_auth]++;
|
2002-10-16 02:10:08 +00:00
|
|
|
crypto_freereq(crp); /* No longer needed. */
|
|
|
|
crp = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Shouldn't happen... */
|
|
|
|
if (m == NULL) {
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_crypto++;
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: bogus returned buffer from crypto\n", __func__));
|
2002-10-16 02:10:08 +00:00
|
|
|
error = EINVAL;
|
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Figure out header size. */
|
|
|
|
rplen = HDRSIZE(sav);
|
|
|
|
authsize = AUTHSIZE(sav);
|
|
|
|
|
|
|
|
/* Copy authenticator off the packet. */
|
|
|
|
m_copydata(m, skip + rplen, authsize, calc);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If we have an mtag, we don't need to verify the authenticator --
|
|
|
|
* it has been verified by an IPsec-aware NIC.
|
|
|
|
*/
|
|
|
|
if (mtag == NULL) {
|
|
|
|
ptr = (caddr_t) (tc + 1);
|
|
|
|
|
|
|
|
/* Verify authenticator. */
|
|
|
|
if (bcmp(ptr + skip + rplen, calc, authsize)) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: authentication hash mismatch for packet "
|
|
|
|
"in SA %s/%08lx\n", __func__,
|
2002-10-16 02:10:08 +00:00
|
|
|
ipsec_address(&saidx->dst),
|
|
|
|
(u_long) ntohl(sav->spi)));
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_badauth++;
|
2002-10-16 02:10:08 +00:00
|
|
|
error = EACCES;
|
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Fix the Next Protocol field. */
|
|
|
|
((u_int8_t *) ptr)[protoff] = nxt;
|
|
|
|
|
|
|
|
/* Copyback the saved (uncooked) network headers. */
|
|
|
|
m_copyback(m, 0, skip, ptr);
|
|
|
|
} else {
|
|
|
|
/* Fix the Next Protocol field. */
|
|
|
|
m_copyback(m, protoff, sizeof(u_int8_t), &nxt);
|
|
|
|
}
|
|
|
|
|
|
|
|
free(tc, M_XDATA), tc = NULL; /* No longer needed */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Header is now authenticated.
|
|
|
|
*/
|
|
|
|
m->m_flags |= M_AUTHIPHDR|M_AUTHIPDGM;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Update replay sequence number, if appropriate.
|
|
|
|
*/
|
|
|
|
if (sav->replay) {
|
|
|
|
u_int32_t seq;
|
|
|
|
|
|
|
|
m_copydata(m, skip + offsetof(struct newah, ah_seq),
|
|
|
|
sizeof (seq), (caddr_t) &seq);
|
|
|
|
if (ipsec_updatereplay(ntohl(seq), sav)) {
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_replay++;
|
2002-10-16 02:10:08 +00:00
|
|
|
error = ENOBUFS; /*XXX as above*/
|
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Remove the AH header and authenticator from the mbuf.
|
|
|
|
*/
|
|
|
|
error = m_striphdr(m, skip, rplen + authsize);
|
|
|
|
if (error) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: mangled mbuf chain for SA %s/%08lx\n", __func__,
|
2002-10-16 02:10:08 +00:00
|
|
|
ipsec_address(&saidx->dst), (u_long) ntohl(sav->spi)));
|
|
|
|
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_hdrops++;
|
2002-10-16 02:10:08 +00:00
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
|
2011-04-27 19:28:42 +00:00
|
|
|
switch (saidx->dst.sa.sa_family) {
|
|
|
|
#ifdef INET6
|
|
|
|
case AF_INET6:
|
|
|
|
error = ipsec6_common_input_cb(m, sav, skip, protoff, mtag);
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
#ifdef INET
|
|
|
|
case AF_INET:
|
|
|
|
error = ipsec4_common_input_cb(m, sav, skip, protoff, mtag);
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
default:
|
|
|
|
panic("%s: Unexpected address family: %d saidx=%p", __func__,
|
|
|
|
saidx->dst.sa.sa_family, saidx);
|
|
|
|
}
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
KEY_FREESAV(&sav);
|
|
|
|
return error;
|
|
|
|
bad:
|
|
|
|
if (sav)
|
|
|
|
KEY_FREESAV(&sav);
|
|
|
|
if (m != NULL)
|
|
|
|
m_freem(m);
|
|
|
|
if (tc != NULL)
|
|
|
|
free(tc, M_XDATA);
|
|
|
|
if (crp != NULL)
|
|
|
|
crypto_freereq(crp);
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* AH output routine, called by ipsec[46]_process_packet().
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
ah_output(
|
|
|
|
struct mbuf *m,
|
|
|
|
struct ipsecrequest *isr,
|
|
|
|
struct mbuf **mp,
|
|
|
|
int skip,
|
|
|
|
int protoff)
|
|
|
|
{
|
|
|
|
struct secasvar *sav;
|
|
|
|
struct auth_hash *ahx;
|
|
|
|
struct cryptodesc *crda;
|
|
|
|
struct tdb_crypto *tc;
|
|
|
|
struct mbuf *mi;
|
|
|
|
struct cryptop *crp;
|
|
|
|
u_int16_t iplen;
|
|
|
|
int error, rplen, authsize, maxpacketsize, roff;
|
|
|
|
u_int8_t prot;
|
|
|
|
struct newah *ah;
|
|
|
|
|
|
|
|
sav = isr->sav;
|
2003-09-29 22:57:43 +00:00
|
|
|
IPSEC_ASSERT(sav != NULL, ("null SA"));
|
2002-10-16 02:10:08 +00:00
|
|
|
ahx = sav->tdb_authalgxform;
|
2003-09-29 22:57:43 +00:00
|
|
|
IPSEC_ASSERT(ahx != NULL, ("null authentication xform"));
|
2002-10-16 02:10:08 +00:00
|
|
|
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_output++;
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
/* Figure out header size. */
|
|
|
|
rplen = HDRSIZE(sav);
|
|
|
|
|
|
|
|
/* Check for maximum packet size violations. */
|
|
|
|
switch (sav->sah->saidx.dst.sa.sa_family) {
|
|
|
|
#ifdef INET
|
|
|
|
case AF_INET:
|
|
|
|
maxpacketsize = IP_MAXPACKET;
|
|
|
|
break;
|
|
|
|
#endif /* INET */
|
|
|
|
#ifdef INET6
|
|
|
|
case AF_INET6:
|
|
|
|
maxpacketsize = IPV6_MAXPACKET;
|
|
|
|
break;
|
|
|
|
#endif /* INET6 */
|
|
|
|
default:
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: unknown/unsupported protocol family %u, "
|
|
|
|
"SA %s/%08lx\n", __func__,
|
2002-10-16 02:10:08 +00:00
|
|
|
sav->sah->saidx.dst.sa.sa_family,
|
|
|
|
ipsec_address(&sav->sah->saidx.dst),
|
|
|
|
(u_long) ntohl(sav->spi)));
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_nopf++;
|
2002-10-16 02:10:08 +00:00
|
|
|
error = EPFNOSUPPORT;
|
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
authsize = AUTHSIZE(sav);
|
|
|
|
if (rplen + authsize + m->m_pkthdr.len > maxpacketsize) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: packet in SA %s/%08lx got too big "
|
|
|
|
"(len %u, max len %u)\n", __func__,
|
2002-10-16 02:10:08 +00:00
|
|
|
ipsec_address(&sav->sah->saidx.dst),
|
|
|
|
(u_long) ntohl(sav->spi),
|
|
|
|
rplen + authsize + m->m_pkthdr.len, maxpacketsize));
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_toobig++;
|
2002-10-16 02:10:08 +00:00
|
|
|
error = EMSGSIZE;
|
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Update the counters. */
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_obytes += m->m_pkthdr.len - skip;
|
2002-10-16 02:10:08 +00:00
|
|
|
|
2006-03-15 21:11:11 +00:00
|
|
|
m = m_unshare(m, M_NOWAIT);
|
2002-10-16 02:10:08 +00:00
|
|
|
if (m == NULL) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: cannot clone mbuf chain, SA %s/%08lx\n", __func__,
|
2002-10-16 02:10:08 +00:00
|
|
|
ipsec_address(&sav->sah->saidx.dst),
|
|
|
|
(u_long) ntohl(sav->spi)));
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_hdrops++;
|
2002-10-16 02:10:08 +00:00
|
|
|
error = ENOBUFS;
|
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Inject AH header. */
|
|
|
|
mi = m_makespace(m, skip, rplen + authsize, &roff);
|
|
|
|
if (mi == NULL) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: failed to inject %u byte AH header for SA "
|
|
|
|
"%s/%08lx\n", __func__,
|
2002-10-16 02:10:08 +00:00
|
|
|
rplen + authsize,
|
|
|
|
ipsec_address(&sav->sah->saidx.dst),
|
|
|
|
(u_long) ntohl(sav->spi)));
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_hdrops++; /*XXX differs from openbsd */
|
2002-10-16 02:10:08 +00:00
|
|
|
error = ENOBUFS;
|
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The AH header is guaranteed by m_makespace() to be in
|
|
|
|
* contiguous memory, at roff bytes offset into the returned mbuf.
|
|
|
|
*/
|
|
|
|
ah = (struct newah *)(mtod(mi, caddr_t) + roff);
|
|
|
|
|
|
|
|
/* Initialize the AH header. */
|
|
|
|
m_copydata(m, protoff, sizeof(u_int8_t), (caddr_t) &ah->ah_nxt);
|
|
|
|
ah->ah_len = (rplen + authsize - sizeof(struct ah)) / sizeof(u_int32_t);
|
|
|
|
ah->ah_reserve = 0;
|
|
|
|
ah->ah_spi = sav->spi;
|
|
|
|
|
|
|
|
/* Zeroize authenticator. */
|
|
|
|
m_copyback(m, skip + rplen, authsize, ipseczeroes);
|
|
|
|
|
|
|
|
/* Insert packet replay counter, as requested. */
|
|
|
|
if (sav->replay) {
|
|
|
|
if (sav->replay->count == ~0 &&
|
|
|
|
(sav->flags & SADB_X_EXT_CYCSEQ) == 0) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: replay counter wrapped for SA %s/%08lx\n",
|
|
|
|
__func__,
|
2002-10-16 02:10:08 +00:00
|
|
|
ipsec_address(&sav->sah->saidx.dst),
|
|
|
|
(u_long) ntohl(sav->spi)));
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_wrap++;
|
2002-10-16 02:10:08 +00:00
|
|
|
error = EINVAL;
|
|
|
|
goto bad;
|
|
|
|
}
|
2006-04-10 15:04:36 +00:00
|
|
|
#ifdef REGRESSION
|
2006-04-09 19:11:45 +00:00
|
|
|
/* Emulate replay attack when ipsec_replay is TRUE. */
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
if (!V_ipsec_replay)
|
2006-04-10 15:04:36 +00:00
|
|
|
#endif
|
2006-04-09 19:11:45 +00:00
|
|
|
sav->replay->count++;
|
2002-10-16 02:10:08 +00:00
|
|
|
ah->ah_seq = htonl(sav->replay->count);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Get crypto descriptors. */
|
|
|
|
crp = crypto_getreq(1);
|
|
|
|
if (crp == NULL) {
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: failed to acquire crypto descriptors\n",
|
|
|
|
__func__));
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_crypto++;
|
2002-10-16 02:10:08 +00:00
|
|
|
error = ENOBUFS;
|
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
|
|
|
|
crda = crp->crp_desc;
|
|
|
|
|
|
|
|
crda->crd_skip = 0;
|
|
|
|
crda->crd_inject = skip + rplen;
|
|
|
|
crda->crd_len = m->m_pkthdr.len;
|
|
|
|
|
|
|
|
/* Authentication operation. */
|
|
|
|
crda->crd_alg = ahx->type;
|
2006-03-25 13:38:52 +00:00
|
|
|
crda->crd_key = sav->key_auth->key_data;
|
2002-10-16 02:10:08 +00:00
|
|
|
crda->crd_klen = _KEYBITS(sav->key_auth);
|
|
|
|
|
|
|
|
/* Allocate IPsec-specific opaque crypto info. */
|
|
|
|
tc = (struct tdb_crypto *) malloc(
|
|
|
|
sizeof(struct tdb_crypto) + skip, M_XDATA, M_NOWAIT|M_ZERO);
|
|
|
|
if (tc == NULL) {
|
|
|
|
crypto_freereq(crp);
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: failed to allocate tdb_crypto\n", __func__));
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_crypto++;
|
2002-10-16 02:10:08 +00:00
|
|
|
error = ENOBUFS;
|
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Save the skipped portion of the packet. */
|
|
|
|
m_copydata(m, 0, skip, (caddr_t) (tc + 1));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Fix IP header length on the header used for
|
|
|
|
* authentication. We don't need to fix the original
|
|
|
|
* header length as it will be fixed by our caller.
|
|
|
|
*/
|
|
|
|
switch (sav->sah->saidx.dst.sa.sa_family) {
|
|
|
|
#ifdef INET
|
|
|
|
case AF_INET:
|
|
|
|
bcopy(((caddr_t)(tc + 1)) +
|
|
|
|
offsetof(struct ip, ip_len),
|
|
|
|
(caddr_t) &iplen, sizeof(u_int16_t));
|
|
|
|
iplen = htons(ntohs(iplen) + rplen + authsize);
|
|
|
|
m_copyback(m, offsetof(struct ip, ip_len),
|
|
|
|
sizeof(u_int16_t), (caddr_t) &iplen);
|
|
|
|
break;
|
|
|
|
#endif /* INET */
|
|
|
|
|
|
|
|
#ifdef INET6
|
|
|
|
case AF_INET6:
|
|
|
|
bcopy(((caddr_t)(tc + 1)) +
|
|
|
|
offsetof(struct ip6_hdr, ip6_plen),
|
|
|
|
(caddr_t) &iplen, sizeof(u_int16_t));
|
|
|
|
iplen = htons(ntohs(iplen) + rplen + authsize);
|
|
|
|
m_copyback(m, offsetof(struct ip6_hdr, ip6_plen),
|
|
|
|
sizeof(u_int16_t), (caddr_t) &iplen);
|
|
|
|
break;
|
|
|
|
#endif /* INET6 */
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Fix the Next Header field in saved header. */
|
|
|
|
((u_int8_t *) (tc + 1))[protoff] = IPPROTO_AH;
|
|
|
|
|
|
|
|
/* Update the Next Protocol field in the IP header. */
|
|
|
|
prot = IPPROTO_AH;
|
|
|
|
m_copyback(m, protoff, sizeof(u_int8_t), (caddr_t) &prot);
|
|
|
|
|
|
|
|
/* "Massage" the packet headers for crypto processing. */
|
|
|
|
error = ah_massage_headers(&m, sav->sah->saidx.dst.sa.sa_family,
|
|
|
|
skip, ahx->type, 1);
|
|
|
|
if (error != 0) {
|
|
|
|
m = NULL; /* mbuf was free'd by ah_massage_headers. */
|
|
|
|
free(tc, M_XDATA);
|
|
|
|
crypto_freereq(crp);
|
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Crypto operation descriptor. */
|
|
|
|
crp->crp_ilen = m->m_pkthdr.len; /* Total input length. */
|
2003-06-30 05:09:32 +00:00
|
|
|
crp->crp_flags = CRYPTO_F_IMBUF | CRYPTO_F_CBIFSYNC;
|
2002-10-16 02:10:08 +00:00
|
|
|
crp->crp_buf = (caddr_t) m;
|
|
|
|
crp->crp_callback = ah_output_cb;
|
|
|
|
crp->crp_sid = sav->tdb_cryptoid;
|
|
|
|
crp->crp_opaque = (caddr_t) tc;
|
|
|
|
|
|
|
|
/* These are passed as-is to the callback. */
|
|
|
|
tc->tc_isr = isr;
|
2011-03-31 15:23:32 +00:00
|
|
|
KEY_ADDREFSA(sav);
|
|
|
|
tc->tc_sav = sav;
|
2002-10-16 02:10:08 +00:00
|
|
|
tc->tc_spi = sav->spi;
|
|
|
|
tc->tc_dst = sav->sah->saidx.dst;
|
|
|
|
tc->tc_proto = sav->sah->saidx.proto;
|
|
|
|
tc->tc_skip = skip;
|
|
|
|
tc->tc_protoff = protoff;
|
|
|
|
|
|
|
|
return crypto_dispatch(crp);
|
|
|
|
bad:
|
|
|
|
if (m)
|
|
|
|
m_freem(m);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* AH output callback from the crypto driver.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
ah_output_cb(struct cryptop *crp)
|
|
|
|
{
|
|
|
|
int skip, protoff, error;
|
|
|
|
struct tdb_crypto *tc;
|
|
|
|
struct ipsecrequest *isr;
|
|
|
|
struct secasvar *sav;
|
|
|
|
struct mbuf *m;
|
|
|
|
caddr_t ptr;
|
2003-09-01 05:35:55 +00:00
|
|
|
int err;
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
tc = (struct tdb_crypto *) crp->crp_opaque;
|
2003-09-29 22:57:43 +00:00
|
|
|
IPSEC_ASSERT(tc != NULL, ("null opaque data area!"));
|
2002-10-16 02:10:08 +00:00
|
|
|
skip = tc->tc_skip;
|
|
|
|
protoff = tc->tc_protoff;
|
|
|
|
ptr = (caddr_t) (tc + 1);
|
|
|
|
m = (struct mbuf *) crp->crp_buf;
|
|
|
|
|
|
|
|
isr = tc->tc_isr;
|
2003-09-29 22:57:43 +00:00
|
|
|
IPSECREQUEST_LOCK(isr);
|
2011-03-31 15:23:32 +00:00
|
|
|
sav = tc->tc_sav;
|
|
|
|
/* With the isr lock released SA pointer can be updated. */
|
|
|
|
if (sav != isr->sav) {
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_notdb++;
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: SA expired while in crypto\n", __func__));
|
2002-10-16 02:10:08 +00:00
|
|
|
error = ENOBUFS; /*XXX*/
|
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check for crypto errors. */
|
|
|
|
if (crp->crp_etype) {
|
|
|
|
if (sav->tdb_cryptoid != 0)
|
|
|
|
sav->tdb_cryptoid = crp->crp_sid;
|
|
|
|
|
|
|
|
if (crp->crp_etype == EAGAIN) {
|
2003-09-29 22:57:43 +00:00
|
|
|
IPSECREQUEST_UNLOCK(isr);
|
2006-03-23 23:26:34 +00:00
|
|
|
error = crypto_dispatch(crp);
|
|
|
|
return error;
|
2002-10-16 02:10:08 +00:00
|
|
|
}
|
|
|
|
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_noxform++;
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: crypto error %d\n", __func__, crp->crp_etype));
|
2002-10-16 02:10:08 +00:00
|
|
|
error = crp->crp_etype;
|
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Shouldn't happen... */
|
|
|
|
if (m == NULL) {
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_crypto++;
|
2003-09-29 22:57:43 +00:00
|
|
|
DPRINTF(("%s: bogus returned buffer from crypto\n", __func__));
|
2002-10-16 02:10:08 +00:00
|
|
|
error = EINVAL;
|
|
|
|
goto bad;
|
|
|
|
}
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
V_ahstat.ahs_hist[sav->alg_auth]++;
|
2002-10-16 02:10:08 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Copy original headers (with the new protocol number) back
|
|
|
|
* in place.
|
|
|
|
*/
|
|
|
|
m_copyback(m, 0, skip, ptr);
|
|
|
|
|
|
|
|
/* No longer needed. */
|
|
|
|
free(tc, M_XDATA);
|
|
|
|
crypto_freereq(crp);
|
|
|
|
|
2006-04-10 15:04:36 +00:00
|
|
|
#ifdef REGRESSION
|
2006-04-09 19:11:45 +00:00
|
|
|
/* Emulate man-in-the-middle attack when ipsec_integrity is TRUE. */
|
Commit step 1 of the vimage project, (network stack)
virtualization work done by Marko Zec (zec@).
This is the first in a series of commits over the course
of the next few weeks.
Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.
We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.
Obtained from: //depot/projects/vimage-commit2/...
Reviewed by: brooks, des, ed, mav, julian,
jamie, kris, rwatson, zec, ...
(various people I forgot, different versions)
md5 (with a bit of help)
Sponsored by: NLnet Foundation, The FreeBSD Foundation
X-MFC after: never
V_Commit_Message_Reviewed_By: more people than the patch
2008-08-17 23:27:27 +00:00
|
|
|
if (V_ipsec_integrity) {
|
2006-04-09 19:11:45 +00:00
|
|
|
int alen;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Corrupt HMAC if we want to test integrity verification of
|
|
|
|
* the other side.
|
|
|
|
*/
|
|
|
|
alen = AUTHSIZE(sav);
|
|
|
|
m_copyback(m, m->m_pkthdr.len - alen, alen, ipseczeroes);
|
|
|
|
}
|
2006-04-10 15:04:36 +00:00
|
|
|
#endif
|
2006-04-09 19:11:45 +00:00
|
|
|
|
2002-10-16 02:10:08 +00:00
|
|
|
/* NB: m is reclaimed by ipsec_process_done. */
|
|
|
|
err = ipsec_process_done(m, isr);
|
|
|
|
KEY_FREESAV(&sav);
|
2003-09-29 22:57:43 +00:00
|
|
|
IPSECREQUEST_UNLOCK(isr);
|
2002-10-16 02:10:08 +00:00
|
|
|
return err;
|
|
|
|
bad:
|
|
|
|
if (sav)
|
|
|
|
KEY_FREESAV(&sav);
|
2003-09-29 22:57:43 +00:00
|
|
|
IPSECREQUEST_UNLOCK(isr);
|
2002-10-16 02:10:08 +00:00
|
|
|
if (m)
|
|
|
|
m_freem(m);
|
|
|
|
free(tc, M_XDATA);
|
|
|
|
crypto_freereq(crp);
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct xformsw ah_xformsw = {
|
|
|
|
XF_AH, XFT_AUTH, "IPsec AH",
|
|
|
|
ah_init, ah_zeroize, ah_input, ah_output,
|
|
|
|
};
|
|
|
|
|
|
|
|
static void
|
|
|
|
ah_attach(void)
|
|
|
|
{
|
2008-11-19 09:39:34 +00:00
|
|
|
|
First pass at separating per-vnet initializer functions
from existing functions for initializing global state.
At this stage, the new per-vnet initializer functions are
directly called from the existing global initialization code,
which should in most cases result in compiler inlining those
new functions, hence yielding a near-zero functional change.
Modify the existing initializer functions which are invoked via
protosw, like ip_init() et. al., to allow them to be invoked
multiple times, i.e. per each vnet. Global state, if any,
is initialized only if such functions are called within the
context of vnet0, which will be determined via the
IS_DEFAULT_VNET(curvnet) check (currently always true).
While here, V_irtualize a few remaining global UMA zones
used by net/netinet/netipsec networking code. While it is
not yet clear to me or anybody else whether this is the right
thing to do, at this stage this makes the code more readable,
and makes it easier to track uncollected UMA-zone-backed
objects on vnet removal. In the long run, it's quite possible
that some form of shared use of UMA zone pools among multiple
vnets should be considered.
Bump __FreeBSD_version due to changes in layout of structs
vnet_ipfw, vnet_inet and vnet_net.
Approved by: julian (mentor)
2009-04-06 22:29:41 +00:00
|
|
|
xform_register(&ah_xformsw);
|
|
|
|
}
|
|
|
|
|
2002-10-16 02:10:08 +00:00
|
|
|
SYSINIT(ah_xform_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_MIDDLE, ah_attach, NULL);
|