modules/ppp_mod.h

   1 /*
   2  * Miscellaneous definitions for PPP STREAMS modules.
   3  */
   4
   5 /*
   6  * Macros for allocating and freeing kernel memory.
   7  */
   8 #ifdef SVR4                     /* SVR4, including Solaris 2 */
   9 #include <sys/kmem.h>
  10 #define ALLOC_SLEEP(n)          kmem_alloc((n), KM_SLEEP)
  11 #define ALLOC_NOSLEEP(n)        kmem_alloc((n), KM_NOSLEEP)
  12 #define FREE(p, n)              kmem_free((p), (n))
  13 #endif
  14
  15 #ifdef SUNOS4
  16 #include <sys/kmem_alloc.h>     /* SunOS 4.x */
  17 #define ALLOC_SLEEP(n)          kmem_alloc((n), KMEM_SLEEP)
  18 #define ALLOC_NOSLEEP(n)        kmem_alloc((n), KMEM_NOSLEEP)
  19 #define FREE(p, n)              kmem_free((p), (n))
  20 #define NOTSUSER()              (suser()? 0: EPERM)
  21 #define bcanputnext(q, band)    canputnext((q))
  22 #endif /* SunOS 4 */
  23
  24 #ifdef __osf__
  25 #include <sys/malloc.h>
  26
  27 /* caution: this mirrors macros in sys/malloc.h, and uses interfaces
  28  * which are subject to change.
  29  * The problems are that:
  30  *     - the official MALLOC macro wants the lhs of the assignment as an argument,
  31  *       and it takes care of the assignment itself (yuck.)
  32  *     - PPP insists on using "FREE" which conflicts with a macro of the same name.
  33  *
  34  */
  35 #ifdef BUCKETINDX /* V2.0 */
  36 #define ALLOC_SLEEP(n)          (void *)malloc((u_long)(n), BUCKETP(n), M_DEVBUF, M_WAITOK)
  37 #define ALLOC_NOSLEEP(n)        (void *)malloc((u_long)(n), BUCKETP(n), M_DEVBUF, M_NOWAIT)
  38 #else
  39 #define ALLOC_SLEEP(n)          (void *)malloc((u_long)(n), BUCKETINDEX(n), M_DEVBUF, M_WAITOK)
  40 #define ALLOC_NOSLEEP(n)        (void *)malloc((u_long)(n), BUCKETINDEX(n), M_DEVBUF, M_NOWAIT)
  41 #endif
  42
  43 #define bcanputnext(q, band)    canputnext((q))
  44
  45 #ifdef FREE
  46 #undef FREE
  47 #endif
  48 #define FREE(p, n)              free((void *)(p), M_DEVBUF)
  49
  50 #define NO_DLPI 1
  51
  52 #ifndef IFT_PPP
  53 #define IFT_PPP 0x17
  54 #endif
  55
  56 #include <sys/proc.h>
  57 #define NOTSUSER()              (suser(u.u_procp->p_rcred, &u.u_acflag) ? EPERM : 0)
  58
  59 /* #include "ppp_osf.h" */
  60
  61 #endif /* __osf__ */
  62
  63 #ifdef AIX4
  64 #define ALLOC_SLEEP(n)          xmalloc((n), 0, pinned_heap)    /* AIX V4.x */
  65 #define ALLOC_NOSLEEP(n)        xmalloc((n), 0, pinned_heap)    /* AIX V4.x */
  66 #define FREE(p, n)              xmfree((p), pinned_heap)
  67 #define NOTSUSER()              (suser()? 0: EPERM)
  68 #endif /* AIX */
  69
  70 /*
  71  * Macros for printing debugging stuff.
  72  */
  73 #ifdef DEBUG
  74 #if defined(SVR4) || defined(__osf__)
  75 #if defined(SNI)
  76 #include <sys/strlog.h>
  77 #define STRLOG_ID               4712
  78 #define DPRINT(f)               strlog(STRLOG_ID, 0, 0, SL_TRACE, f)
  79 #define DPRINT1(f, a1)          strlog(STRLOG_ID, 0, 0, SL_TRACE, f, a1)
  80 #define DPRINT2(f, a1, a2)      strlog(STRLOG_ID, 0, 0, SL_TRACE, f, a1, a2)
  81 #define DPRINT3(f, a1, a2, a3)  strlog(STRLOG_ID, 0, 0, SL_TRACE, f, a1, a2, a3)
  82 #else
  83 #define DPRINT(f)               cmn_err(CE_CONT, f)
  84 #define DPRINT1(f, a1)          cmn_err(CE_CONT, f, a1)
  85 #define DPRINT2(f, a1, a2)      cmn_err(CE_CONT, f, a1, a2)
  86 #define DPRINT3(f, a1, a2, a3)  cmn_err(CE_CONT, f, a1, a2, a3)
  87 #endif /* SNI */
  88 #else
  89 #define DPRINT(f)               printf(f)
  90 #define DPRINT1(f, a1)          printf(f, a1)
  91 #define DPRINT2(f, a1, a2)      printf(f, a1, a2)
  92 #define DPRINT3(f, a1, a2, a3)  printf(f, a1, a2, a3)
  93 #endif /* SVR4 or OSF */
  94
  95 #else
  96 #define DPRINT(f)               0
  97 #define DPRINT1(f, a1)          0
  98 #define DPRINT2(f, a1, a2)      0
  99 #define DPRINT3(f, a1, a2, a3)  0
 100 #endif /* DEBUG */
 101
 102 #ifndef SVR4
 103 typedef unsigned char uchar_t;
 104 typedef unsigned short ushort_t;
 105 #ifndef __osf__
 106 typedef int minor_t;
 107 #endif
 108 #endif
 109
 110 /*
 111  * If we don't have multithreading support, define substitutes.
 112  */
 113 #ifndef D_MP
 114 # define qprocson(q)
 115 # define qprocsoff(q)
 116 # define put(q, mp)     ((*(q)->q_qinfo->qi_putp)((q), (mp)))
 117 # define canputnext(q)  canput((q)->q_next)
 118 # define qwriter(q, mp, func, scope)    (func)((q), (mp))
 119 #endif
 120
 121 #ifdef D_MP
 122 /* Use msgpullup if we have other multithreading support. */
 123 #define PULLUP(mp, len)                         \
 124     do {                                        \
 125         mblk_t *np = msgpullup((mp), (len));    \
 126         freemsg((mp));                          \
 127         mp = np;                                \
 128     } while (0)
 129
 130 #else
 131 /* Use pullupmsg if we don't have any multithreading support. */
 132 #define PULLUP(mp, len)                 \
 133     do {                                \
 134         if (!pullupmsg((mp), (len))) {  \
 135             freemsg((mp));              \
 136             mp = 0;                     \
 137         }                               \
 138     } while (0)
 139 #endif
 140
 141 /*
 142  * How to declare the open and close procedures for a module.
 143  */
 144 #ifdef SVR4
 145 #define MOD_OPEN_DECL(name)     \
 146 static int name __P((queue_t *, dev_t *, int, int, cred_t *))
 147
 148 #define MOD_CLOSE_DECL(name)    \
 149 static int name __P((queue_t *, int, cred_t *))
 150
 151 #define MOD_OPEN(name)                          \
 152 static int name(q, devp, flag, sflag, credp)    \
 153     queue_t *q;                                 \
 154     dev_t *devp;                                \
 155     int flag, sflag;                            \
 156     cred_t *credp;
 157
 158 #define MOD_CLOSE(name)         \
 159 static int name(q, flag, credp) \
 160     queue_t *q;                 \
 161     int flag;                   \
 162     cred_t *credp;
 163
 164 #define OPEN_ERROR(x)           return (x)
 165 #define DRV_OPEN_OK(dev)        return 0
 166
 167 #define NOTSUSER()              (drv_priv(credp))
 168
 169 #else   /* not SVR4 */
 170 #define MOD_OPEN_DECL(name)     \
 171 static int name __P((queue_t *, int, int, int))
 172
 173 #define MOD_CLOSE_DECL(name)    \
 174 static int name __P((queue_t *, int))
 175
 176 #define MOD_OPEN(name)          \
 177 static int name(q, dev, flag, sflag)    \
 178     queue_t *q;                         \
 179     int dev;                            \
 180     int flag, sflag;
 181
 182 #define MOD_CLOSE(name)         \
 183 static int name(q, flag)        \
 184     queue_t *q;                 \
 185     int flag;
 186
 187 #define OPEN_ERROR(x)           { u.u_error = (x); return OPENFAIL; }
 188 #define DRV_OPEN_OK(dev)        return (dev)
 189
 190 #endif  /* SVR4 */