FreeRTOS/Common/ethernet/lwIP_130/src/include/lwip/sockets.h

   1 /*
   2  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without modification,
   6  * are permitted provided that the following conditions are met:
   7  *
   8  * 1. Redistributions of source code must retain the above copyright notice,
   9  *    this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright notice,
  11  *    this list of conditions and the following disclaimer in the documentation
  12  *    and/or other materials provided with the distribution.
  13  * 3. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
  19  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
  21  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  22  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  24  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  25  * OF SUCH DAMAGE.
  26  *
  27  * This file is part of the lwIP TCP/IP stack.
  28  *
  29  * Author: Adam Dunkels <adam@sics.se>
  30  *
  31  */
  32
  33
  34 #ifndef __LWIP_SOCKETS_H__
  35 #define __LWIP_SOCKETS_H__
  36
  37 #include "lwip/opt.h"
  38
  39 #if LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */
  40
  41 #include "lwip/ip_addr.h"
  42 #include "lwip/inet.h"
  43
  44 #ifdef __cplusplus
  45 extern "C" {
  46 #endif
  47
  48 /* members are in network byte order */
  49 struct sockaddr_in {
  50   u8_t sin_len;
  51   u8_t sin_family;
  52   u16_t sin_port;
  53   struct in_addr sin_addr;
  54   char sin_zero[8];
  55 };
  56
  57 struct sockaddr {
  58   u8_t sa_len;
  59   u8_t sa_family;
  60   char sa_data[14];
  61 };
  62
  63 #ifndef socklen_t
  64 #  define socklen_t u32_t
  65 #endif
  66
  67 /* Socket protocol types (TCP/UDP/RAW) */
  68 #define SOCK_STREAM     1
  69 #define SOCK_DGRAM      2
  70 #define SOCK_RAW        3
  71
  72 /*
  73  * Option flags per-socket. These must match the SOF_ flags in ip.h!
  74  */
  75 #define  SO_DEBUG       0x0001 /* Unimplemented: turn on debugging info recording */
  76 #define  SO_ACCEPTCONN  0x0002 /* socket has had listen() */
  77 #define  SO_REUSEADDR   0x0004 /* Unimplemented: allow local address reuse */
  78 #define  SO_KEEPALIVE   0x0008 /* keep connections alive */
  79 #define  SO_DONTROUTE   0x0010 /* Unimplemented: just use interface addresses */
  80 #define  SO_BROADCAST   0x0020 /* Unimplemented: permit sending of broadcast msgs */
  81 #define  SO_USELOOPBACK 0x0040 /* Unimplemented: bypass hardware when possible */
  82 #define  SO_LINGER      0x0080 /* linger on close if data present */
  83 #define  SO_OOBINLINE   0x0100 /* Unimplemented: leave received OOB data in line */
  84 #define  SO_REUSEPORT   0x0200 /* Unimplemented: allow local address & port reuse */
  85
  86 #define SO_DONTLINGER   ((int)(~SO_LINGER))
  87
  88 /*
  89  * Additional options, not kept in so_options.
  90  */
  91 #define SO_SNDBUF    0x1001    /* Unimplemented: send buffer size */
  92 #define SO_RCVBUF    0x1002    /* receive buffer size */
  93 #define SO_SNDLOWAT  0x1003    /* Unimplemented: send low-water mark */
  94 #define SO_RCVLOWAT  0x1004    /* Unimplemented: receive low-water mark */
  95 #define SO_SNDTIMEO  0x1005    /* Unimplemented: send timeout */
  96 #define SO_RCVTIMEO  0x1006    /* receive timeout */
  97 #define SO_ERROR     0x1007    /* get error status and clear */
  98 #define SO_TYPE      0x1008    /* get socket type */
  99 #define SO_CONTIMEO  0x1009    /* Unimplemented: connect timeout */
 100 #define SO_NO_CHECK  0x100a    /* don't create UDP checksum */
 101
 102
 103 /*
 104  * Structure used for manipulating linger option.
 105  */
 106 struct linger {
 107        int l_onoff;                /* option on/off */
 108        int l_linger;               /* linger time */
 109 };
 110
 111 /*
 112  * Level number for (get/set)sockopt() to apply to socket itself.
 113  */
 114 #define  SOL_SOCKET  0xfff    /* options for socket level */
 115
 116
 117 #define AF_UNSPEC       0
 118 #define AF_INET         2
 119 #define PF_INET         AF_INET
 120 #define PF_UNSPEC       AF_UNSPEC
 121
 122 #define IPPROTO_IP      0
 123 #define IPPROTO_TCP     6
 124 #define IPPROTO_UDP     17
 125 #define IPPROTO_UDPLITE 136
 126
 127 #define INADDR_ANY       0
 128 #define INADDR_BROADCAST 0xffffffff
 129
 130 /* Flags we can use with send and recv. */
 131 #define MSG_PEEK       0x01    /* Peeks at an incoming message */
 132 #define MSG_WAITALL    0x02    /* Unimplemented: Requests that the function block until the full amount of data requested can be returned */
 133 #define MSG_OOB        0x04    /* Unimplemented: Requests out-of-band data. The significance and semantics of out-of-band data are protocol-specific */
 134 #define MSG_DONTWAIT   0x08    /* Nonblocking i/o for this operation only */
 135 #define MSG_MORE       0x10    /* Sender will send more */
 136
 137
 138 /*
 139  * Options for level IPPROTO_IP
 140  */
 141 #define IP_TOS             1
 142 #define IP_TTL             2
 143
 144 #if LWIP_TCP
 145 /*
 146  * Options for level IPPROTO_TCP
 147  */
 148 #define TCP_NODELAY    0x01    /* don't delay send to coalesce packets */
 149 #define TCP_KEEPALIVE  0x02    /* send KEEPALIVE probes when idle for pcb->keep_idle milliseconds */
 150 #define TCP_KEEPIDLE   0x03    /* set pcb->keep_idle  - Same as TCP_KEEPALIVE, but use seconds for get/setsockopt */
 151 #define TCP_KEEPINTVL  0x04    /* set pcb->keep_intvl - Use seconds for get/setsockopt */
 152 #define TCP_KEEPCNT    0x05    /* set pcb->keep_cnt   - Use number of probes sent for get/setsockopt */
 153 #endif /* LWIP_TCP */
 154
 155 #if LWIP_UDP && LWIP_UDPLITE
 156 /*
 157  * Options for level IPPROTO_UDPLITE
 158  */
 159 #define UDPLITE_SEND_CSCOV 0x01 /* sender checksum coverage */
 160 #define UDPLITE_RECV_CSCOV 0x02 /* minimal receiver checksum coverage */
 161 #endif /* LWIP_UDP && LWIP_UDPLITE*/
 162
 163
 164 #if LWIP_IGMP
 165 /*
 166  * Options and types for UDP multicast traffic handling
 167  */
 168 #define IP_ADD_MEMBERSHIP  3
 169 #define IP_DROP_MEMBERSHIP 4
 170 #define IP_MULTICAST_TTL   5
 171 #define IP_MULTICAST_IF    6
 172 #define IP_MULTICAST_LOOP  7
 173
 174 typedef struct ip_mreq {
 175     struct in_addr imr_multiaddr; /* IP multicast address of group */
 176     struct in_addr imr_interface; /* local IP address of interface */
 177 } ip_mreq;
 178 #endif /* LWIP_IGMP */
 179
 180 /* Unimplemented for now... */
 181 #define IPTOS_TOS_MASK          0x1E
 182 #define IPTOS_TOS(tos)          ((tos) & IPTOS_TOS_MASK)
 183 #define IPTOS_LOWDELAY          0x10
 184 #define IPTOS_THROUGHPUT        0x08
 185 #define IPTOS_RELIABILITY       0x04
 186 #define IPTOS_LOWCOST           0x02
 187 #define IPTOS_MINCOST           IPTOS_LOWCOST
 188
 189 /*
 190  * Definitions for IP precedence (also in ip_tos) (Unimplemented)
 191  */
 192 #define IPTOS_PREC_MASK                 0xe0
 193 #define IPTOS_PREC(tos)                ((tos) & IPTOS_PREC_MASK)
 194 #define IPTOS_PREC_NETCONTROL           0xe0
 195 #define IPTOS_PREC_INTERNETCONTROL      0xc0
 196 #define IPTOS_PREC_CRITIC_ECP           0xa0
 197 #define IPTOS_PREC_FLASHOVERRIDE        0x80
 198 #define IPTOS_PREC_FLASH                0x60
 199 #define IPTOS_PREC_IMMEDIATE            0x40
 200 #define IPTOS_PREC_PRIORITY             0x20
 201 #define IPTOS_PREC_ROUTINE              0x00
 202
 203
 204 /*
 205  * Commands for ioctlsocket(),  taken from the BSD file fcntl.h.
 206  * lwip_ioctl only supports FIONREAD and FIONBIO, for now
 207  *
 208  * Ioctl's have the command encoded in the lower word,
 209  * and the size of any in or out parameters in the upper
 210  * word.  The high 2 bits of the upper word are used
 211  * to encode the in/out status of the parameter; for now
 212  * we restrict parameters to at most 128 bytes.
 213  */
 214 #if !defined(FIONREAD) || !defined(FIONBIO)
 215 #define IOCPARM_MASK    0x7fU           /* parameters must be < 128 bytes */
 216 #define IOC_VOID        0x20000000UL    /* no parameters */
 217 #define IOC_OUT         0x40000000UL    /* copy out parameters */
 218 #define IOC_IN          0x80000000UL    /* copy in parameters */
 219 #define IOC_INOUT       (IOC_IN|IOC_OUT)
 220                                         /* 0x20000000 distinguishes new &
 221                                            old ioctl's */
 222 #define _IO(x,y)        (IOC_VOID|((x)<<8)|(y))
 223
 224 #define _IOR(x,y,t)     (IOC_OUT|(((long)sizeof(t)&IOCPARM_MASK)<<16)|((x)<<8)|(y))
 225
 226 #define _IOW(x,y,t)     (IOC_IN|(((long)sizeof(t)&IOCPARM_MASK)<<16)|((x)<<8)|(y))
 227 #endif /* !defined(FIONREAD) || !defined(FIONBIO) */
 228
 229 #ifndef FIONREAD
 230 #define FIONREAD    _IOR('f', 127, unsigned long) /* get # bytes to read */
 231 #endif
 232 #ifndef FIONBIO
 233 #define FIONBIO     _IOW('f', 126, unsigned long) /* set/clear non-blocking i/o */
 234 #endif
 235
 236 /* Socket I/O Controls: unimplemented */
 237 #ifndef SIOCSHIWAT
 238 #define SIOCSHIWAT  _IOW('s',  0, unsigned long)  /* set high watermark */
 239 #define SIOCGHIWAT  _IOR('s',  1, unsigned long)  /* get high watermark */
 240 #define SIOCSLOWAT  _IOW('s',  2, unsigned long)  /* set low watermark */
 241 #define SIOCGLOWAT  _IOR('s',  3, unsigned long)  /* get low watermark */
 242 #define SIOCATMARK  _IOR('s',  7, unsigned long)  /* at oob mark? */
 243 #endif
 244
 245 /* Socket flags: */
 246 #ifndef O_NONBLOCK
 247 #define O_NONBLOCK    04000U
 248 #endif
 249
 250 /* FD_SET used for lwip_select */
 251 #ifndef FD_SET
 252   #undef  FD_SETSIZE
 253   /* Make FD_SETSIZE match NUM_SOCKETS in socket.c */
 254   #define FD_SETSIZE    MEMP_NUM_NETCONN
 255   #define FD_SET(n, p)  ((p)->fd_bits[(n)/8] |=  (1 << ((n) & 7)))
 256   #define FD_CLR(n, p)  ((p)->fd_bits[(n)/8] &= ~(1 << ((n) & 7)))
 257   #define FD_ISSET(n,p) ((p)->fd_bits[(n)/8] &   (1 << ((n) & 7)))
 258   #define FD_ZERO(p)    memset((void*)(p),0,sizeof(*(p)))
 259
 260   typedef struct fd_set {
 261           unsigned char fd_bits [(FD_SETSIZE+7)/8];
 262         } fd_set;
 263
 264 #endif /* FD_SET */
 265
 266 /** LWIP_TIMEVAL_PRIVATE: if you want to use the struct timeval provided
 267  * by your system, set this to 0 and include <sys/time.h> in cc.h */
 268 #ifndef LWIP_TIMEVAL_PRIVATE
 269 #define LWIP_TIMEVAL_PRIVATE 1
 270 #endif
 271
 272 #if LWIP_TIMEVAL_PRIVATE
 273 struct timeval {
 274   long    tv_sec;         /* seconds */
 275   long    tv_usec;        /* and microseconds */
 276 };
 277 #endif /* LWIP_TIMEVAL_PRIVATE */
 278
 279 void lwip_socket_init(void);
 280
 281 int lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen);
 282 int lwip_bind(int s, struct sockaddr *name, socklen_t namelen);
 283 int lwip_shutdown(int s, int how);
 284 int lwip_getpeername (int s, struct sockaddr *name, socklen_t *namelen);
 285 int lwip_getsockname (int s, struct sockaddr *name, socklen_t *namelen);
 286 int lwip_getsockopt (int s, int level, int optname, void *optval, socklen_t *optlen);
 287 int lwip_setsockopt (int s, int level, int optname, const void *optval, socklen_t optlen);
 288 int lwip_close(int s);
 289 int lwip_connect(int s, const struct sockaddr *name, socklen_t namelen);
 290 int lwip_listen(int s, int backlog);
 291 int lwip_recv(int s, void *mem, int len, unsigned int flags);
 292 int lwip_read(int s, void *mem, int len);
 293 int lwip_recvfrom(int s, void *mem, int len, unsigned int flags,
 294       struct sockaddr *from, socklen_t *fromlen);
 295 int lwip_send(int s, const void *dataptr, int size, unsigned int flags);
 296 int lwip_sendto(int s, const void *dataptr, int size, unsigned int flags,
 297     struct sockaddr *to, socklen_t tolen);
 298 int lwip_socket(int domain, int type, int protocol);
 299 int lwip_write(int s, const void *dataptr, int size);
 300 int lwip_select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset,
 301                 struct timeval *timeout);
 302 int lwip_ioctl(int s, long cmd, void *argp);
 303
 304 #if LWIP_COMPAT_SOCKETS
 305 #define accept(a,b,c)         lwip_accept(a,b,c)
 306 #define bind(a,b,c)           lwip_bind(a,b,c)
 307 #define shutdown(a,b)         lwip_shutdown(a,b)
 308 #define closesocket(s)        lwip_close(s)
 309 #define connect(a,b,c)        lwip_connect(a,b,c)
 310 #define getsockname(a,b,c)    lwip_getsockname(a,b,c)
 311 #define getpeername(a,b,c)    lwip_getpeername(a,b,c)
 312 #define setsockopt(a,b,c,d,e) lwip_setsockopt(a,b,c,d,e)
 313 #define getsockopt(a,b,c,d,e) lwip_getsockopt(a,b,c,d,e)
 314 #define listen(a,b)           lwip_listen(a,b)
 315 #define recv(a,b,c,d)         lwip_recv(a,b,c,d)
 316 #define recvfrom(a,b,c,d,e,f) lwip_recvfrom(a,b,c,d,e,f)
 317 #define send(a,b,c,d)         lwip_send(a,b,c,d)
 318 #define sendto(a,b,c,d,e,f)   lwip_sendto(a,b,c,d,e,f)
 319 #define socket(a,b,c)         lwip_socket(a,b,c)
 320 #define select(a,b,c,d,e)     lwip_select(a,b,c,d,e)
 321 #define ioctlsocket(a,b,c)    lwip_ioctl(a,b,c)
 322
 323 #if LWIP_POSIX_SOCKETS_IO_NAMES
 324 #define read(a,b,c)           lwip_read(a,b,c)
 325 #define write(a,b,c)          lwip_write(a,b,c)
 326 #define close(s)              lwip_close(s)
 327 #endif /* LWIP_POSIX_SOCKETS_IO_NAMES */
 328
 329 #endif /* LWIP_COMPAT_SOCKETS */
 330
 331 #ifdef __cplusplus
 332 }
 333 #endif
 334
 335 #endif /* LWIP_SOCKET */
 336
 337 #endif /* __LWIP_SOCKETS_H__ */