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