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is not specified. Due to the long call chain IPsec code can produce the kernel stack exhaustion on the i386 architecture. The debugging code usually is not used, but it requires a lot of stack space to keep buffers for strings formatting. This patch conditionally defines macros to disable building of IPsec debugging code. IPsec currently has two sysctl variables to configure debug output: * net.key.debug variable is used to enable debug output for PF_KEY protocol. Such debug messages are produced by KEYDBG() macro and usually they can be interesting for developers. * net.inet.ipsec.debug variable is used to enable debug output for DPRINTF() macro and ipseclog() function. DPRINTF() macro usually is used for development debugging. ipseclog() function is used for debugging by administrator. The patch disables KEYDBG() and DPRINTF() macros, and formatting buffers declarations when IPSEC_DEBUG is not present in kernel config. This reduces stack requirement for up to several hundreds of bytes. The net.inet.ipsec.debug variable still can be used to enable ipseclog() messages by administrator. PR: 219476 Reported by: eugen No objection from: #network MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D10869
107 lines
4.0 KiB
C
107 lines
4.0 KiB
C
/* $FreeBSD$ */
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/* $KAME: key_debug.h,v 1.10 2001/08/05 08:37:52 itojun Exp $ */
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/*-
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _NETIPSEC_KEY_DEBUG_H_
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#define _NETIPSEC_KEY_DEBUG_H_
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#ifdef _KERNEL
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/* debug flags */
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#define KEYDEBUG_STAMP 0x00000001 /* path */
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#define KEYDEBUG_DATA 0x00000002 /* data */
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#define KEYDEBUG_DUMP 0x00000004 /* dump */
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#define KEYDEBUG_KEY 0x00000010 /* key processing */
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#define KEYDEBUG_ALG 0x00000020 /* ciph & auth algorithm */
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#define KEYDEBUG_IPSEC 0x00000040 /* ipsec processing */
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#define KEYDEBUG_KEY_STAMP (KEYDEBUG_KEY | KEYDEBUG_STAMP)
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#define KEYDEBUG_KEY_DATA (KEYDEBUG_KEY | KEYDEBUG_DATA)
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#define KEYDEBUG_KEY_DUMP (KEYDEBUG_KEY | KEYDEBUG_DUMP)
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#define KEYDEBUG_ALG_STAMP (KEYDEBUG_ALG | KEYDEBUG_STAMP)
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#define KEYDEBUG_ALG_DATA (KEYDEBUG_ALG | KEYDEBUG_DATA)
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#define KEYDEBUG_ALG_DUMP (KEYDEBUG_ALG | KEYDEBUG_DUMP)
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#define KEYDEBUG_IPSEC_STAMP (KEYDEBUG_IPSEC | KEYDEBUG_STAMP)
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#define KEYDEBUG_IPSEC_DATA (KEYDEBUG_IPSEC | KEYDEBUG_DATA)
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#define KEYDEBUG_IPSEC_DUMP (KEYDEBUG_IPSEC | KEYDEBUG_DUMP)
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#ifdef IPSEC_DEBUG
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#define KEYDBG(lev, arg) \
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if ((V_key_debug_level & (KEYDEBUG_ ## lev)) == (KEYDEBUG_ ## lev)) { \
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arg; \
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}
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#else
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#define KEYDBG(lev, arg)
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#endif /* !IPSEC_DEBUG */
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VNET_DECLARE(uint32_t, key_debug_level);
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#define V_key_debug_level VNET(key_debug_level)
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#endif /*_KERNEL*/
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struct sadb_msg;
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struct sadb_ext;
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extern void kdebug_sadb(struct sadb_msg *);
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extern void kdebug_sadb_x_policy(struct sadb_ext *);
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#ifdef _KERNEL
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struct secpolicy;
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struct secpolicyindex;
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struct secasindex;
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struct secashead;
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struct secasvar;
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struct secreplay;
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struct mbuf;
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union sockaddr_union;
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const char* kdebug_secpolicy_state(u_int);
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const char* kdebug_secpolicy_policy(u_int);
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const char* kdebug_secpolicyindex_dir(u_int);
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const char* kdebug_ipsecrequest_level(u_int);
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const char* kdebug_secasindex_mode(u_int);
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const char* kdebug_secasv_state(u_int);
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void kdebug_secpolicy(struct secpolicy *);
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void kdebug_secpolicyindex(struct secpolicyindex *, const char *);
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void kdebug_secasindex(const struct secasindex *, const char *);
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void kdebug_secash(struct secashead *, const char *);
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void kdebug_secasv(struct secasvar *);
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void kdebug_mbufhdr(const struct mbuf *);
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void kdebug_mbuf(const struct mbuf *);
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char *ipsec_address(const union sockaddr_union *, char *, socklen_t);
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char *ipsec_sa2str(struct secasvar *, char *, size_t);
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#endif /*_KERNEL*/
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struct sockaddr;
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extern void kdebug_sockaddr(struct sockaddr *);
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extern void ipsec_hexdump(caddr_t, int);
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extern void ipsec_bindump(caddr_t, int);
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#endif /* _NETIPSEC_KEY_DEBUG_H_ */
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