initial commit of lk (little kernel) project
diff --git a/lib/lwip/src/include/lwip/api.h b/lib/lwip/src/include/lwip/api.h
new file mode 100644
index 0000000..7f0ad59
--- /dev/null
+++ b/lib/lwip/src/include/lwip/api.h
@@ -0,0 +1,159 @@
+/*
+ * 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_API_H__
+#define __LWIP_API_H__
+
+#include "lwip/opt.h"
+#include "lwip/pbuf.h"
+#include "lwip/sys.h"
+
+#include "lwip/ip.h"
+
+#include "lwip/raw.h"
+#include "lwip/udp.h"
+#include "lwip/tcp.h"
+
+#include "lwip/err.h"
+
+#define NETCONN_NOCOPY 0x00
+#define NETCONN_COPY 0x01
+
+enum netconn_type {
+ NETCONN_TCP,
+ NETCONN_UDP,
+ NETCONN_UDPLITE,
+ NETCONN_UDPNOCHKSUM,
+ NETCONN_RAW
+};
+
+enum netconn_state {
+ NETCONN_NONE,
+ NETCONN_WRITE,
+ NETCONN_ACCEPT,
+ NETCONN_RECV,
+ NETCONN_CONNECT,
+ NETCONN_CLOSE
+};
+
+enum netconn_evt {
+ NETCONN_EVT_RCVPLUS,
+ NETCONN_EVT_RCVMINUS,
+ NETCONN_EVT_SENDPLUS,
+ NETCONN_EVT_SENDMINUS
+};
+
+struct netbuf {
+ struct pbuf *p, *ptr;
+ struct ip_addr *fromaddr;
+ u16_t fromport;
+ err_t err;
+};
+
+struct netconn {
+ enum netconn_type type;
+ enum netconn_state state;
+ union {
+ struct tcp_pcb *tcp;
+ struct udp_pcb *udp;
+ struct raw_pcb *raw;
+ } pcb;
+ err_t err;
+ sys_mbox_t mbox;
+ sys_mbox_t recvmbox;
+ sys_mbox_t acceptmbox;
+ sys_sem_t sem;
+ int socket;
+ u16_t recv_avail;
+ void (* callback)(struct netconn *, enum netconn_evt, u16_t len);
+};
+
+/* Network buffer functions: */
+struct netbuf * netbuf_new (void);
+void netbuf_delete (struct netbuf *buf);
+void * netbuf_alloc (struct netbuf *buf, u16_t size);
+void netbuf_free (struct netbuf *buf);
+void netbuf_ref (struct netbuf *buf,
+ void *dataptr, u16_t size);
+void netbuf_chain (struct netbuf *head,
+ struct netbuf *tail);
+
+u16_t netbuf_len (struct netbuf *buf);
+err_t netbuf_data (struct netbuf *buf,
+ void **dataptr, u16_t *len);
+s8_t netbuf_next (struct netbuf *buf);
+void netbuf_first (struct netbuf *buf);
+
+void netbuf_copy (struct netbuf *buf,
+ void *dataptr, u16_t len);
+void netbuf_copy_partial(struct netbuf *buf, void *dataptr,
+ u16_t len, u16_t offset);
+struct ip_addr * netbuf_fromaddr (struct netbuf *buf);
+u16_t netbuf_fromport (struct netbuf *buf);
+
+/* Network connection functions: */
+struct netconn * netconn_new (enum netconn_type type);
+struct
+netconn *netconn_new_with_callback(enum netconn_type t,
+ void (*callback)(struct netconn *, enum netconn_evt, u16_t len));
+struct
+netconn *netconn_new_with_proto_and_callback(enum netconn_type t, u16_t proto,
+ void (*callback)(struct netconn *, enum netconn_evt, u16_t len));
+err_t netconn_delete (struct netconn *conn);
+enum netconn_type netconn_type (struct netconn *conn);
+err_t netconn_peer (struct netconn *conn,
+ struct ip_addr *addr,
+ u16_t *port);
+err_t netconn_addr (struct netconn *conn,
+ struct ip_addr **addr,
+ u16_t *port);
+err_t netconn_bind (struct netconn *conn,
+ struct ip_addr *addr,
+ u16_t port);
+err_t netconn_connect (struct netconn *conn,
+ struct ip_addr *addr,
+ u16_t port);
+err_t netconn_disconnect (struct netconn *conn);
+err_t netconn_listen (struct netconn *conn);
+struct netconn * netconn_accept (struct netconn *conn);
+struct netbuf * netconn_recv (struct netconn *conn);
+err_t netconn_send (struct netconn *conn,
+ struct netbuf *buf);
+err_t netconn_write (struct netconn *conn,
+ void *dataptr, u16_t size,
+ u8_t copy);
+err_t netconn_close (struct netconn *conn);
+
+err_t netconn_err (struct netconn *conn);
+
+#endif /* __LWIP_API_H__ */
+
+