[netwatch.git] / lwip / src / include / lwip / sockets.h

/*
 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
 * 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.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
 *
 * This file is part of the lwIP TCP/IP stack.
 * 
 * Author: Adam Dunkels <adam@sics.se>
 *
 */


#ifndef __LWIP_SOCKETS_H__
#define __LWIP_SOCKETS_H__

#include "lwip/opt.h"

#if LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */

#include "lwip/ip_addr.h"
#include "lwip/inet.h"

#ifdef __cplusplus
extern "C" {
#endif

/* members are in network byte order */
struct sockaddr_in {
  u8_t sin_len;
  u8_t sin_family;
  u16_t sin_port;
  struct in_addr sin_addr;
  char sin_zero[8];
};

struct sockaddr {
  u8_t sa_len;
  u8_t sa_family;
  char sa_data[14];
};

#ifndef socklen_t
#  define socklen_t u32_t
#endif

/* Socket protocol types (TCP/UDP/RAW) */
#define SOCK_STREAM     1
#define SOCK_DGRAM      2
#define SOCK_RAW        3

/*
 * Option flags per-socket. These must match the SOF_ flags in ip.h!
 */
#define  SO_DEBUG       0x0001 /* Unimplemented: turn on debugging info recording */
#define  SO_ACCEPTCONN  0x0002 /* socket has had listen() */
#define  SO_REUSEADDR   0x0004 /* Unimplemented: allow local address reuse */
#define  SO_KEEPALIVE   0x0008 /* keep connections alive */
#define  SO_DONTROUTE   0x0010 /* Unimplemented: just use interface addresses */
#define  SO_BROADCAST   0x0020 /* Unimplemented: permit sending of broadcast msgs */
#define  SO_USELOOPBACK 0x0040 /* Unimplemented: bypass hardware when possible */
#define  SO_LINGER      0x0080 /* linger on close if data present */
#define  SO_OOBINLINE   0x0100 /* Unimplemented: leave received OOB data in line */
#define  SO_REUSEPORT   0x0200 /* Unimplemented: allow local address & port reuse */

#define SO_DONTLINGER   ((int)(~SO_LINGER))

/*
 * Additional options, not kept in so_options.
 */
#define SO_SNDBUF    0x1001    /* Unimplemented: send buffer size */
#define SO_RCVBUF    0x1002    /* receive buffer size */
#define SO_SNDLOWAT  0x1003    /* Unimplemented: send low-water mark */
#define SO_RCVLOWAT  0x1004    /* Unimplemented: receive low-water mark */
#define SO_SNDTIMEO  0x1005    /* Unimplemented: send timeout */
#define SO_RCVTIMEO  0x1006    /* receive timeout */
#define SO_ERROR     0x1007    /* get error status and clear */
#define SO_TYPE      0x1008    /* get socket type */
#define SO_CONTIMEO  0x1009    /* Unimplemented: connect timeout */
#define SO_NO_CHECK  0x100a    /* don't create UDP checksum */


/*
 * Structure used for manipulating linger option.
 */
struct linger {
       int l_onoff;                /* option on/off */
       int l_linger;               /* linger time */
};

/*
 * Level number for (get/set)sockopt() to apply to socket itself.
 */
#define  SOL_SOCKET  0xfff    /* options for socket level */


#define AF_UNSPEC       0
#define AF_INET         2
#define PF_INET         AF_INET
#define PF_UNSPEC       AF_UNSPEC

#define IPPROTO_IP      0
#define IPPROTO_TCP     6
#define IPPROTO_UDP     17
#define IPPROTO_UDPLITE 136

#define INADDR_ANY       0
#define INADDR_BROADCAST 0xffffffff

/* Flags we can use with send and recv. */
#define MSG_PEEK       0x01    /* Peeks at an incoming message */
#define MSG_WAITALL    0x02    /* Unimplemented: Requests that the function block until the full amount of data requested can be returned */
#define MSG_OOB        0x04    /* Unimplemented: Requests out-of-band data. The significance and semantics of out-of-band data are protocol-specific */
#define MSG_DONTWAIT   0x08    /* Nonblocking i/o for this operation only */
#define MSG_MORE       0x10    /* Sender will send more */


/*
 * Options for level IPPROTO_IP
 */
#define IP_TOS             1
#define IP_TTL             2

#if LWIP_TCP
/*
 * Options for level IPPROTO_TCP
 */
#define TCP_NODELAY    0x01    /* don't delay send to coalesce packets */
#define TCP_KEEPALIVE  0x02    /* send KEEPALIVE probes when idle for pcb->keep_idle milliseconds */
#define TCP_KEEPIDLE   0x03    /* set pcb->keep_idle  - Same as TCP_KEEPALIVE, but use seconds for get/setsockopt */
#define TCP_KEEPINTVL  0x04    /* set pcb->keep_intvl - Use seconds for get/setsockopt */
#define TCP_KEEPCNT    0x05    /* set pcb->keep_cnt   - Use number of probes sent for get/setsockopt */
#endif /* LWIP_TCP */

#if LWIP_UDP && LWIP_UDPLITE
/*
 * Options for level IPPROTO_UDPLITE
 */
#define UDPLITE_SEND_CSCOV 0x01 /* sender checksum coverage */
#define UDPLITE_RECV_CSCOV 0x02 /* minimal receiver checksum coverage */
#endif /* LWIP_UDP && LWIP_UDPLITE*/


#if LWIP_IGMP
/*
 * Options and types for UDP multicast traffic handling
 */
#define IP_ADD_MEMBERSHIP  3
#define IP_DROP_MEMBERSHIP 4
#define IP_MULTICAST_TTL   5
#define IP_MULTICAST_IF    6
#define IP_MULTICAST_LOOP  7

typedef struct ip_mreq {
    struct in_addr imr_multiaddr; /* IP multicast address of group */
    struct in_addr imr_interface; /* local IP address of interface */
} ip_mreq;
#endif /* LWIP_IGMP */

/* Unimplemented for now... */
#define IPTOS_TOS_MASK          0x1E
#define IPTOS_TOS(tos)          ((tos) & IPTOS_TOS_MASK)
#define IPTOS_LOWDELAY          0x10
#define IPTOS_THROUGHPUT        0x08
#define IPTOS_RELIABILITY       0x04
#define IPTOS_LOWCOST           0x02
#define IPTOS_MINCOST           IPTOS_LOWCOST

/*
 * Definitions for IP precedence (also in ip_tos) (Unimplemented)
 */
#define IPTOS_PREC_MASK                 0xe0
#define IPTOS_PREC(tos)                ((tos) & IPTOS_PREC_MASK)
#define IPTOS_PREC_NETCONTROL           0xe0
#define IPTOS_PREC_INTERNETCONTROL      0xc0
#define IPTOS_PREC_CRITIC_ECP           0xa0
#define IPTOS_PREC_FLASHOVERRIDE        0x80
#define IPTOS_PREC_FLASH                0x60
#define IPTOS_PREC_IMMEDIATE            0x40
#define IPTOS_PREC_PRIORITY             0x20
#define IPTOS_PREC_ROUTINE              0x00


/*
 * Commands for ioctlsocket(),  taken from the BSD file fcntl.h.
 * lwip_ioctl only supports FIONREAD and FIONBIO, for now
 *
 * Ioctl's have the command encoded in the lower word,
 * and the size of any in or out parameters in the upper
 * word.  The high 2 bits of the upper word are used
 * to encode the in/out status of the parameter; for now
 * we restrict parameters to at most 128 bytes.
 */
#if !defined(FIONREAD) || !defined(FIONBIO)
#define IOCPARM_MASK    0x7fU           /* parameters must be < 128 bytes */
#define IOC_VOID        0x20000000UL    /* no parameters */
#define IOC_OUT         0x40000000UL    /* copy out parameters */
#define IOC_IN          0x80000000UL    /* copy in parameters */
#define IOC_INOUT       (IOC_IN|IOC_OUT)
                                        /* 0x20000000 distinguishes new &
                                           old ioctl's */
#define _IO(x,y)        (IOC_VOID|((x)<<8)|(y))

#define _IOR(x,y,t)     (IOC_OUT|(((long)sizeof(t)&IOCPARM_MASK)<<16)|((x)<<8)|(y))

#define _IOW(x,y,t)     (IOC_IN|(((long)sizeof(t)&IOCPARM_MASK)<<16)|((x)<<8)|(y))
#endif /* !defined(FIONREAD) || !defined(FIONBIO) */

#ifndef FIONREAD
#define FIONREAD    _IOR('f', 127, unsigned long) /* get # bytes to read */
#endif
#ifndef FIONBIO
#define FIONBIO     _IOW('f', 126, unsigned long) /* set/clear non-blocking i/o */
#endif

/* Socket I/O Controls: unimplemented */
#ifndef SIOCSHIWAT
#define SIOCSHIWAT  _IOW('s',  0, unsigned long)  /* set high watermark */
#define SIOCGHIWAT  _IOR('s',  1, unsigned long)  /* get high watermark */
#define SIOCSLOWAT  _IOW('s',  2, unsigned long)  /* set low watermark */
#define SIOCGLOWAT  _IOR('s',  3, unsigned long)  /* get low watermark */
#define SIOCATMARK  _IOR('s',  7, unsigned long)  /* at oob mark? */
#endif

/* Socket flags: */
#ifndef O_NONBLOCK
#define O_NONBLOCK    04000U
#endif

/* FD_SET used for lwip_select */
#ifndef FD_SET
  #undef  FD_SETSIZE
  /* Make FD_SETSIZE match NUM_SOCKETS in socket.c */
  #define FD_SETSIZE    MEMP_NUM_NETCONN
  #define FD_SET(n, p)  ((p)->fd_bits[(n)/8] |=  (1 << ((n) & 7)))
  #define FD_CLR(n, p)  ((p)->fd_bits[(n)/8] &= ~(1 << ((n) & 7)))
  #define FD_ISSET(n,p) ((p)->fd_bits[(n)/8] &   (1 << ((n) & 7)))
  #define FD_ZERO(p)    memset((void*)(p),0,sizeof(*(p)))

  typedef struct fd_set {
          unsigned char fd_bits [(FD_SETSIZE+7)/8];
        } fd_set;

#endif /* FD_SET */

/** LWIP_TIMEVAL_PRIVATE: if you want to use the struct timeval provided
 * by your system, set this to 0 and include <sys/time.h> in cc.h */ 
#ifndef LWIP_TIMEVAL_PRIVATE
#define LWIP_TIMEVAL_PRIVATE 1
#endif

#if LWIP_TIMEVAL_PRIVATE
struct timeval {
  long    tv_sec;         /* seconds */
  long    tv_usec;        /* and microseconds */
};
#endif /* LWIP_TIMEVAL_PRIVATE */

void lwip_socket_init(void);

int lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen);
int lwip_bind(int s, struct sockaddr *name, socklen_t namelen);
int lwip_shutdown(int s, int how);
int lwip_getpeername (int s, struct sockaddr *name, socklen_t *namelen);
int lwip_getsockname (int s, struct sockaddr *name, socklen_t *namelen);
int lwip_getsockopt (int s, int level, int optname, void *optval, socklen_t *optlen);
int lwip_setsockopt (int s, int level, int optname, const void *optval, socklen_t optlen);
int lwip_close(int s);
int lwip_connect(int s, const struct sockaddr *name, socklen_t namelen);
int lwip_listen(int s, int backlog);
int lwip_recv(int s, void *mem, int len, unsigned int flags);
int lwip_read(int s, void *mem, int len);
int lwip_recvfrom(int s, void *mem, int len, unsigned int flags,
      struct sockaddr *from, socklen_t *fromlen);
int lwip_send(int s, const void *dataptr, int size, unsigned int flags);
int lwip_sendto(int s, const void *dataptr, int size, unsigned int flags,
    struct sockaddr *to, socklen_t tolen);
int lwip_socket(int domain, int type, int protocol);
int lwip_write(int s, const void *dataptr, int size);
int lwip_select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset,
                struct timeval *timeout);
int lwip_ioctl(int s, long cmd, void *argp);

#if LWIP_COMPAT_SOCKETS
#define accept(a,b,c)         lwip_accept(a,b,c)
#define bind(a,b,c)           lwip_bind(a,b,c)
#define shutdown(a,b)         lwip_shutdown(a,b)
#define closesocket(s)        lwip_close(s)
#define connect(a,b,c)        lwip_connect(a,b,c)
#define getsockname(a,b,c)    lwip_getsockname(a,b,c)
#define getpeername(a,b,c)    lwip_getpeername(a,b,c)
#define setsockopt(a,b,c,d,e) lwip_setsockopt(a,b,c,d,e)
#define getsockopt(a,b,c,d,e) lwip_getsockopt(a,b,c,d,e)
#define listen(a,b)           lwip_listen(a,b)
#define recv(a,b,c,d)         lwip_recv(a,b,c,d)
#define recvfrom(a,b,c,d,e,f) lwip_recvfrom(a,b,c,d,e,f)
#define send(a,b,c,d)         lwip_send(a,b,c,d)
#define sendto(a,b,c,d,e,f)   lwip_sendto(a,b,c,d,e,f)
#define socket(a,b,c)         lwip_socket(a,b,c)
#define select(a,b,c,d,e)     lwip_select(a,b,c,d,e)
#define ioctlsocket(a,b,c)    lwip_ioctl(a,b,c)

#if LWIP_POSIX_SOCKETS_IO_NAMES
#define read(a,b,c)           lwip_read(a,b,c)
#define write(a,b,c)          lwip_write(a,b,c)
#define close(s)              lwip_close(s)
#endif /* LWIP_POSIX_SOCKETS_IO_NAMES */

#endif /* LWIP_COMPAT_SOCKETS */

#ifdef __cplusplus
}
#endif

#endif /* LWIP_SOCKET */

#endif /* __LWIP_SOCKETS_H__ */
Commit	Line	Data
6e6d4a8b JP	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__ */