142 lines
5.2 KiB
C
142 lines
5.2 KiB
C
/*-
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* Copyright (c) 2021
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* Alexander V. Chernikov <melifaro@FreeBSD.org>
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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 University 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 REGENTS 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 REGENTS 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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* $FreeBSD$
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*/
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#ifndef _NET_ROUTE_DEBUG_H_
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#define _NET_ROUTE_DEBUG_H_
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#include <sys/sysctl.h>
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#include <sys/syslog.h>
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/* DEBUG logic */
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#if defined(DEBUG_MOD_NAME) && defined(DEBUG_MAX_LEVEL)
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#define DEBUG_VAR_NAME _DEBUG_VAR_NAME(DEBUG_MOD_NAME)
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#define _DEBUG_VAR_NAME(a) _DEBUG_VAR_NAME_INDIRECT(a)
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#define _DEBUG_VAR_NAME_INDIRECT(prefix) prefix##_debug_level
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#define DEBUG_PREFIX_NAME _DEBUG_PREFIX_NAME(DEBUG_MOD_NAME)
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#define _DEBUG_PREFIX_NAME(n) __DEBUG_PREFIX_NAME(n)
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#define __DEBUG_PREFIX_NAME(n) #n
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#define _DECLARE_DEBUG(_default_level) \
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SYSCTL_DECL(_net_route_debug); \
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static int DEBUG_VAR_NAME = _default_level; \
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SYSCTL_INT(_net_route_debug, OID_AUTO, DEBUG_VAR_NAME, \
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CTLFLAG_RW | CTLFLAG_RWTUN, \
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&(DEBUG_VAR_NAME), 0, "debuglevel")
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/* Additional tracing levels not defined by log.h */
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#ifndef LOG_DEBUG2
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#define LOG_DEBUG2 8
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#endif
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#ifndef LOG_DEBUG3
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#define LOG_DEBUG3 9
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#endif
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#define _output printf
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#define _DEBUG_PASS_MSG(_l) (DEBUG_VAR_NAME >= (_l))
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/*
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* Logging for events specific for particular family and fib
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* Example: [nhop_neigh] inet.0 find_lle: nhop nh#4/inet/vtnet0/10.0.0.1: mapped to lle NULL
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*/
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#define FIB_LOG(_l, _fib, _fam, _fmt, ...) FIB_LOG_##_l(_l, _fib, _fam, _fmt, ## __VA_ARGS__)
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#define _FIB_LOG(_l, _fib, _fam, _fmt, ...) if (_DEBUG_PASS_MSG(_l)) { \
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_output("[" DEBUG_PREFIX_NAME "] %s.%u %s: " _fmt "\n", rib_print_family(_fam), _fib, __func__, ##__VA_ARGS__); \
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}
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/* Same as FIB_LOG, but uses nhop to get fib and family */
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#define FIB_NH_LOG(_l, _nh, _fmt, ...) FIB_LOG_##_l(_l, nhop_get_fibnum(_nh), nhop_get_upper_family(_nh), _fmt, ## __VA_ARGS__)
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/*
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* Generic logging for routing subsystem
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* Example: [nhop_neigh] nhops_update_neigh: L2 prepend update from lle/inet/valid/vtnet0/10.0.0.157
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*/
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#define RT_LOG(_l, _fmt, ...) RT_LOG_##_l(_l, _fmt, ## __VA_ARGS__)
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#define _RT_LOG(_l, _fmt, ...) if (_DEBUG_PASS_MSG(_l)) { \
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_output("[" DEBUG_PREFIX_NAME "] %s: " _fmt "\n", __func__, ##__VA_ARGS__); \
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}
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/*
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* Wrapper logic to avoid compiling high levels of debugging messages for production systems.
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*/
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#if DEBUG_MAX_LEVEL>=LOG_DEBUG2
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#define FIB_LOG_LOG_DEBUG3 _FIB_LOG
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#define RT_LOG_LOG_DEBUG3 _RT_LOG
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#else
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#define FIB_LOG_LOG_DEBUG3(_l, _fib, _fam, _fmt, ...)
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#define RT_LOG_LOG_DEBUG3(_l, _fmt, ...)
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#endif
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#if DEBUG_MAX_LEVEL>=LOG_DEBUG2
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#define FIB_LOG_LOG_DEBUG2 _FIB_LOG
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#define RT_LOG_LOG_DEBUG2 _RT_LOG
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#else
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#define FIB_LOG_LOG_DEBUG2(_l, _fib, _fam, _fmt, ...)
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#define RT_LOG_LOG_DEBUG2(_l, _fmt, ...)
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#endif
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#if DEBUG_MAX_LEVEL>=LOG_DEBUG
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#define FIB_LOG_LOG_DEBUG _FIB_LOG
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#define RT_LOG_LOG_DEBUG _RT_LOG
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#else
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#define FIB_LOG_LOG_DEBUG(_l, _fib, _fam, _fmt, ...)
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#define RT_LOG_LOG_DEBUG(_l, _fmt, ...)
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#endif
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#if DEBUG_MAX_LEVEL>=LOG_INFO
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#define FIB_LOG_LOG_INFO _FIB_LOG
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#define RT_LOG_LOG_INFO _RT_LOG
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#else
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#define FIB_LOG_LOG_INFO(_l, _fib, _fam, _fmt, ...)
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#define RT_LOG_LOG_INFO(_l, _fmt, ...)
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#endif
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#define FIB_LOG_LOG_NOTICE _FIB_LOG
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#define FIB_LOG_LOG_ERR _FIB_LOG
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#define FIB_LOG_LOG_WARNING _FIB_LOG
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#define RT_LOG_LOG_NOTICE _RT_LOG
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#define RT_LOG_LOG_ERR _RT_LOG
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#define RT_LOG_LOG_WARNING _RT_LOG
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#endif
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/* Helpers for fancy-printing various objects */
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struct nhop_object;
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struct llentry;
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struct nhop_neigh;
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char *nhop_print_buf(const struct nhop_object *nh, char *buf, size_t bufsize);
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char *llentry_print_buf(const struct llentry *lle, struct ifnet *ifp, int family, char *buf,
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size_t bufsize);
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char *llentry_print_buf_lltable(const struct llentry *lle, char *buf, size_t bufsize);
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char *neigh_print_buf(const struct nhop_neigh *nn, char *buf, size_t bufsize);
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#endif
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