FreeBSD/Linux Kernel Cross Reference
sys/altq/altq_var.h

     /*      $NetBSD: altq_var.h,v 1.5 2003/11/09 22:11:12 christos Exp $    */
     /*      $KAME: altq_var.h,v 1.7 2000/12/14 08:12:46 thorpej Exp $       */
     
     /*
      * Copyright (C) 1998-2000
      *      Sony Computer Science Laboratories Inc.  All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY SONY CSL AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL SONY CSL OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    #ifndef _ALTQ_ALTQ_VAR_H_
    #define _ALTQ_ALTQ_VAR_H_
    
    #ifdef _KERNEL
    
    #include <sys/param.h>
    #include <sys/kernel.h>
    #include <sys/queue.h>
    
    /*
     * filter structure for altq common classifier
     */
    struct acc_filter {
            LIST_ENTRY(acc_filter)  f_chain;
            void                    *f_class;       /* pointer to the class */
            u_long                  f_handle;       /* filter id */
            u_int32_t               f_fbmask;       /* filter bitmask */
            struct flow_filter      f_filter;       /* filter value */
    };
    
    /*
     * XXX ACC_FILTER_TABLESIZE can't be larger than 2048 unless we fix
     * the handle assignment.
     */
    #define ACC_FILTER_TABLESIZE    (256+1)
    #define ACC_FILTER_MASK         (ACC_FILTER_TABLESIZE - 2)
    #define ACC_WILDCARD_INDEX      (ACC_FILTER_TABLESIZE - 1)
    #ifdef __GNUC__
    #define ACC_GET_HASH_INDEX(addr) \
            ({int x = (addr) + ((addr) >> 16); (x + (x >> 8)) & ACC_FILTER_MASK;})
    #else
    #define ACC_GET_HASH_INDEX(addr) \
            (((addr) + ((addr) >> 8) + ((addr) >> 16) + ((addr) >> 24)) \
            & ACC_FILTER_MASK)
    #endif
    #define ACC_GET_HINDEX(handle) ((handle) >> 20)
    
    struct acc_classifier {
            u_int32_t                       acc_fbmask;
            LIST_HEAD(filt, acc_filter)     acc_filters[ACC_FILTER_TABLESIZE];
    };
    
    /*
     * flowinfo mask bits used by classifier
     */
    /* for ipv4 */
    #define FIMB4_PROTO     0x0001
    #define FIMB4_TOS       0x0002
    #define FIMB4_DADDR     0x0004
    #define FIMB4_SADDR     0x0008
    #define FIMB4_DPORT     0x0010
    #define FIMB4_SPORT     0x0020
    #define FIMB4_GPI       0x0040
    #define FIMB4_ALL       0x007f
    /* for ipv6 */
    #define FIMB6_PROTO     0x0100
    #define FIMB6_TCLASS    0x0200
    #define FIMB6_DADDR     0x0400
    #define FIMB6_SADDR     0x0800
    #define FIMB6_DPORT     0x1000
    #define FIMB6_SPORT     0x2000
    #define FIMB6_GPI       0x4000
    #define FIMB6_FLABEL    0x8000
    #define FIMB6_ALL       0xff00
    
    #define FIMB_ALL        (FIMB4_ALL|FIMB6_ALL)
    
    #define FIMB4_PORTS     (FIMB4_DPORT|FIMB4_SPORT|FIMB4_GPI)
    #define FIMB6_PORTS     (FIMB6_DPORT|FIMB6_SPORT|FIMB6_GPI)
    
    /*
    * machine dependent clock
    * a 64bit high resolution time counter.
    */
   extern u_int32_t machclk_freq;
   extern u_int32_t machclk_per_tick;
   extern void init_machclk(void);
   
   #if defined(__i386__) && !defined(I586_CPU) && !defined(I686_CPU)
   #ifndef ALTQ_NOPCC
   #define ALTQ_NOPCC      /* TSC is not available, ALTQ_NOPCC needed */
   #endif
   #endif
   
   #if defined(__i386__) && !defined(ALTQ_NOPCC)
   /* for pentium tsc */
   #include <machine/cpufunc.h>
   
   #define read_machclk()          rdtsc()
   #ifdef __OpenBSD__
   static __inline u_int64_t
   rdtsc(void)
   {
           u_int64_t rv;
           __asm __volatile(".byte 0x0f, 0x31" : "=A" (rv));
           return (rv);
   }
   #endif /* __OpenBSD__ */
   
   #elif defined(__alpha__) && !defined(ALTQ_NOPCC)
   /* for alpha rpcc */
   extern u_int64_t read_machclk(void);
   
   #else /* !i386 && !alpha */
   /* emulate 256MHz using microtime() */
   #define MACHCLK_SHIFT   8
   static __inline u_int64_t
   read_machclk(void)
   {
           struct timeval tv;
           microtime(&tv);
           return (((u_int64_t)(tv.tv_sec - boottime.tv_sec) * 1000000
                    + tv.tv_usec) << MACHCLK_SHIFT);
   }
   #endif /* !i386 && !alpha */
   
   /*
    * debug support
    */
   #ifdef ALTQ_DEBUG
   #ifdef __STDC__
   #define ASSERT(e)       ((e) ? (void)0 : altq_assert(__FILE__, __LINE__, #e))
   #else   /* PCC */
   #define ASSERT(e)       ((e) ? (void)0 : altq_assert(__FILE__, __LINE__, "e"))
   #endif
   #else
   #define ASSERT(e)       ((void)0)
   #endif
   
   /*
    * misc stuff for compatibility
    */
   /* ioctl cmd type */
   #if defined(__FreeBSD__) && (__FreeBSD__ < 3)
   typedef int ioctlcmd_t;
   #else
   typedef u_long ioctlcmd_t;
   #endif
   
   /*
    * queue macros:
    * the interface of TAILQ_LAST macro changed after the introduction
    * of softupdate. redefine it here to make it work with pre-2.2.7.
    */
   #undef TAILQ_LAST
   #define TAILQ_LAST(head, headname) \
           (*(((struct headname *)((head)->tqh_last))->tqh_last))
   
   #ifndef TAILQ_EMPTY
   #define TAILQ_EMPTY(head) ((head)->tqh_first == NULL)
   #endif
   #ifndef TAILQ_FOREACH
   #define TAILQ_FOREACH(var, head, field)                                 \
           for (var = TAILQ_FIRST(head); var; var = TAILQ_NEXT(var, field))
   #endif
   
   /* macro for timeout/untimeout */
   #if (__FreeBSD_version > 300000) || defined(__NetBSD__)
   /* use callout */
   #include <sys/callout.h>
   
   #define CALLOUT_INIT(c)         callout_init((c))
   #define CALLOUT_RESET(c,t,f,a)  callout_reset((c),(t),(f),(a))
   #define CALLOUT_STOP(c)         callout_stop((c))
   #ifndef CALLOUT_INITIALIZER
   #define CALLOUT_INITIALIZER     { { { NULL } }, 0, NULL, NULL, 0 }
   #endif
   #else
   /* use old-style timeout/untimeout */
   /* dummy callout structure */
   struct callout {
           void            *c_arg;                 /* function argument */
           void            (*c_func) __P((void *));/* functiuon to call */
   };
   #define CALLOUT_INIT(c)         do {    (void)memset((c), 0, sizeof(*(c))); \
                                   } while (/*CONSTCOND*/ 0)
   #define CALLOUT_RESET(c,t,f,a)  do {    (c)->c_arg = (a);       \
                                           (c)->c_func = (f);      \
                                           timeout((f),(a),(t));   \
                                   } while (/*CONSTCOND*/ 0)
   #define CALLOUT_STOP(c)         untimeout((c)->c_func,(c)->c_arg)
   #define CALLOUT_INITIALIZER     { NULL, NULL }
   #endif
   #if !defined(__FreeBSD__)
   typedef void (timeout_t)(void *);
   #endif
   
   #define m_pktlen(m)             ((m)->m_pkthdr.len)
   
   struct ifnet; struct mbuf; struct flowinfo;
   
   void *altq_lookup __P((char *, int));
   int altq_extractflow __P((struct mbuf *, int, struct flowinfo *, u_int32_t));
   int acc_add_filter __P((struct acc_classifier *, struct flow_filter *,
                              void *, u_long *));
   int acc_delete_filter __P((struct acc_classifier *, u_long));
   int acc_discard_filters __P((struct acc_classifier *, void *, int));
   void *acc_classify __P((void *, struct mbuf *, int));
   u_int8_t read_dsfield __P((struct mbuf *, struct altq_pktattr *));
   void write_dsfield __P((struct mbuf *, struct altq_pktattr *, u_int8_t));
   void altq_assert __P((const char *, int, const char *));
   int tbr_set __P((struct ifaltq *, struct tb_profile *));
   int tbr_get __P((struct ifaltq *, struct tb_profile *));
   
   #endif /* _KERNEL */
   #endif /* _ALTQ_ALTQ_VAR_H_ */

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