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      1 /*
      2  * Internal details for libpcap on DOS.
      3  * 32-bit targets: djgpp, Pharlap or DOS4GW.
      4  *
      5  * @(#) $Header: /tcpdump/master/libpcap/pcap-dos.h,v 1.1 2004/12/18 08:52:10 guy Exp $ (LBL)
      6  */
      7 
      8 #ifndef __PCAP_DOS_H
      9 #define __PCAP_DOS_H
     10 
     11 #ifdef __DJGPP__
     12 #include <pc.h>    /* simple non-conio kbhit */
     13 #else
     14 #include <conio.h>
     15 #endif
     16 
     17 typedef int            BOOL;
     18 typedef unsigned char  BYTE;
     19 typedef unsigned short WORD;
     20 typedef unsigned long  DWORD;
     21 typedef BYTE           ETHER[6];
     22 
     23 #define ETH_ALEN       sizeof(ETHER)   /* Ether address length */
     24 #define ETH_HLEN       (2*ETH_ALEN+2)  /* Ether header length  */
     25 #define ETH_MTU        1500
     26 #define ETH_MIN        60
     27 #define ETH_MAX        (ETH_MTU+ETH_HLEN)
     28 
     29 #ifndef TRUE
     30   #define TRUE   1
     31   #define FALSE  0
     32 #endif
     33 
     34 #define PHARLAP  1
     35 #define DJGPP    2
     36 #define DOS4GW   4
     37 
     38 #ifdef __DJGPP__
     39   #undef  DOSX
     40   #define DOSX DJGPP
     41 #endif
     42 
     43 #ifdef __WATCOMC__
     44   #undef  DOSX
     45   #define DOSX DOS4GW
     46 #endif
     47 
     48 #ifdef __HIGHC__
     49   #include <pharlap.h>
     50   #undef  DOSX
     51   #define DOSX PHARLAP
     52   #define inline
     53 #else
     54   typedef unsigned int UINT;
     55 #endif
     56 
     57 
     58 #if defined(__GNUC__) || defined(__HIGHC__)
     59   typedef unsigned long long  uint64;
     60   typedef unsigned long long  QWORD;
     61 #endif
     62 
     63 #if defined(__WATCOMC__)
     64   typedef unsigned __int64  uint64;
     65   typedef unsigned __int64  QWORD;
     66 #endif
     67 
     68 #define ARGSUSED(x)  (void) x
     69 
     70 #if defined (__SMALL__) || defined(__LARGE__)
     71   #define DOSX 0
     72 
     73 #elif !defined(DOSX)
     74   #error DOSX not defined; 1 = PharLap, 2 = djgpp, 4 = DOS4GW
     75 #endif
     76 
     77 #ifdef __HIGHC__
     78 #define min(a,b) _min(a,b)
     79 #define max(a,b) _max(a,b)
     80 #endif
     81 
     82 #ifndef min
     83 #define min(a,b) ((a) < (b) ? (a) : (b))
     84 #endif
     85 
     86 #ifndef max
     87 #define max(a,b) ((a) < (b) ? (b) : (a))
     88 #endif
     89 
     90 #if !defined(_U_) && defined(__GNUC__)
     91 #define _U_  __attribute__((unused))
     92 #endif
     93 
     94 #ifndef _U_
     95 #define _U_
     96 #endif
     97 
     98 #if defined(USE_32BIT_DRIVERS)
     99   #include "msdos/pm_drvr/lock.h"
    100 
    101   #ifndef RECEIVE_QUEUE_SIZE
    102   #define RECEIVE_QUEUE_SIZE  60
    103   #endif
    104 
    105   #ifndef RECEIVE_BUF_SIZE
    106   #define RECEIVE_BUF_SIZE   (ETH_MAX+20)
    107   #endif
    108 
    109   extern struct device el2_dev     LOCKED_VAR;  /* 3Com EtherLink II */
    110   extern struct device el3_dev     LOCKED_VAR;  /*      EtherLink III */
    111   extern struct device tc59_dev    LOCKED_VAR;  /* 3Com Vortex Card (?) */
    112   extern struct device tc515_dev   LOCKED_VAR;
    113   extern struct device tc90x_dev   LOCKED_VAR;
    114   extern struct device tc90bcx_dev LOCKED_VAR;
    115   extern struct device wd_dev      LOCKED_VAR;
    116   extern struct device ne_dev      LOCKED_VAR;
    117   extern struct device acct_dev    LOCKED_VAR;
    118   extern struct device cs89_dev    LOCKED_VAR;
    119   extern struct device rtl8139_dev LOCKED_VAR;
    120 
    121   struct rx_ringbuf {
    122          volatile int in_index;   /* queue index head */
    123          int          out_index;  /* queue index tail */
    124          int          elem_size;  /* size of each element */
    125          int          num_elem;   /* number of elements */
    126          char        *buf_start;  /* start of buffer pool */
    127        };
    128 
    129   struct rx_elem {
    130          DWORD size;              /* size copied to this element */
    131          BYTE  data[ETH_MAX+10];  /* add some margin. data[0] should be */
    132        };                         /* dword aligned */
    133 
    134   extern BYTE *get_rxbuf     (int len) LOCKED_FUNC;
    135   extern int   peek_rxbuf    (BYTE **buf);
    136   extern int   release_rxbuf (BYTE  *buf);
    137 
    138 #else
    139   #define LOCKED_VAR
    140   #define LOCKED_FUNC
    141 
    142   struct device {
    143          const char *name;
    144          const char *long_name;
    145          DWORD  base_addr;      /* device I/O address       */
    146          int    irq;            /* device IRQ number        */
    147          int    dma;            /* DMA channel              */
    148          DWORD  mem_start;      /* shared mem start         */
    149          DWORD  mem_end;        /* shared mem end           */
    150          DWORD  rmem_start;     /* shmem "recv" start       */
    151          DWORD  rmem_end;       /* shared "recv" end        */
    152 
    153          struct device *next;   /* next device in list      */
    154 
    155          /* interface service routines */
    156          int   (*probe)(struct device *dev);
    157          int   (*open) (struct device *dev);
    158          void  (*close)(struct device *dev);
    159          int   (*xmit) (struct device *dev, const void *buf, int len);
    160          void *(*get_stats)(struct device *dev);
    161          void  (*set_multicast_list)(struct device *dev);
    162 
    163          /* driver-to-pcap receive buffer routines */
    164          int   (*copy_rx_buf) (BYTE *buf, int max); /* rx-copy (pktdrvr only) */
    165          BYTE *(*get_rx_buf) (int len);             /* rx-buf fetch/enqueue */
    166          int   (*peek_rx_buf) (BYTE **buf);         /* rx-non-copy at queue */
    167          int   (*release_rx_buf) (BYTE *buf);       /* release after peek */
    168 
    169          WORD   flags;          /* Low-level status flags. */
    170          void  *priv;           /* private data */
    171        };
    172 
    173   /*
    174    * Network device statistics
    175    */
    176   typedef struct net_device_stats {
    177           DWORD  rx_packets;            /* total packets received       */
    178           DWORD  tx_packets;            /* total packets transmitted    */
    179           DWORD  rx_bytes;              /* total bytes received         */
    180           DWORD  tx_bytes;              /* total bytes transmitted      */
    181           DWORD  rx_errors;             /* bad packets received         */
    182           DWORD  tx_errors;             /* packet transmit problems     */
    183           DWORD  rx_dropped;            /* no space in Rx buffers       */
    184           DWORD  tx_dropped;            /* no space available for Tx    */
    185           DWORD  multicast;             /* multicast packets received   */
    186 
    187           /* detailed rx_errors: */
    188           DWORD  rx_length_errors;
    189           DWORD  rx_over_errors;        /* recv'r overrun error         */
    190           DWORD  rx_osize_errors;       /* recv'r over-size error       */
    191           DWORD  rx_crc_errors;         /* recv'd pkt with crc error    */
    192           DWORD  rx_frame_errors;       /* recv'd frame alignment error */
    193           DWORD  rx_fifo_errors;        /* recv'r fifo overrun          */
    194           DWORD  rx_missed_errors;      /* recv'r missed packet         */
    195 
    196           /* detailed tx_errors */
    197           DWORD  tx_aborted_errors;
    198           DWORD  tx_carrier_errors;
    199           DWORD  tx_fifo_errors;
    200           DWORD  tx_heartbeat_errors;
    201           DWORD  tx_window_errors;
    202           DWORD  tx_collisions;
    203           DWORD  tx_jabbers;
    204         } NET_STATS;
    205 #endif
    206 
    207 extern struct device       *active_dev  LOCKED_VAR;
    208 extern const struct device *dev_base    LOCKED_VAR;
    209 extern struct device       *probed_dev;
    210 
    211 extern int pcap_pkt_debug;
    212 
    213 extern void _w32_os_yield (void); /* Watt-32's misc.c */
    214 
    215 #ifdef NDEBUG
    216   #define PCAP_ASSERT(x) ((void)0)
    217 
    218 #else
    219   void pcap_assert (const char *what, const char *file, unsigned line);
    220 
    221   #define PCAP_ASSERT(x) do { \
    222                            if (!(x)) \
    223                               pcap_assert (#x, __FILE__, __LINE__); \
    224                          } while (0)
    225 #endif
    226 
    227 #endif  /* __PCAP_DOS_H */
    228