Diff: modules/pico_tcp.h

Revision:

2:540f6e142d59

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/modules/pico_tcp.h	Sat Aug 03 13:16:14 2013 +0000
@@ -0,0 +1,98 @@
+/*********************************************************************
+PicoTCP. Copyright (c) 2012 TASS Belgium NV. Some rights reserved.
+See LICENSE and COPYING for usage.
+
+.
+
+*********************************************************************/
+#ifndef _INCLUDE_PICO_TCP
+#define _INCLUDE_PICO_TCP
+#include "pico_addressing.h"
+#include "pico_protocol.h"
+#include "pico_socket.h"
+
+extern struct pico_protocol pico_proto_tcp;
+
+struct __attribute__((packed)) pico_tcp_hdr {
+  struct pico_trans trans;
+  uint32_t seq;
+  uint32_t ack;
+  uint8_t  len;
+  uint8_t flags;
+  uint16_t  rwnd;
+  uint16_t crc;
+  uint16_t urgent;
+};
+
+struct __attribute__((packed)) tcp_pseudo_hdr_ipv4
+{
+  struct pico_ip4 src;
+  struct pico_ip4 dst;
+  uint16_t tcp_len;
+  uint8_t res;
+  uint8_t proto;
+};
+
+#define PICO_TCPHDR_SIZE 20
+#define PICO_SIZE_TCPOPT_SYN 20
+#define PICO_SIZE_TCPHDR (sizeof(struct pico_tcp_hdr))
+
+#define PICO_TCP_DEFAULT_MSS 1444
+
+
+
+/* TCP options */
+#define PICO_TCP_OPTION_END         0x00
+#define PICO_TCPOPTLEN_END        1
+#define PICO_TCP_OPTION_NOOP        0x01
+#define PICO_TCPOPTLEN_NOOP       1
+#define PICO_TCP_OPTION_MSS         0x02
+#define PICO_TCPOPTLEN_MSS        4
+#define PICO_TCP_OPTION_WS          0x03
+#define PICO_TCPOPTLEN_WS         3
+#define PICO_TCP_OPTION_SACK_OK        0x04
+#define PICO_TCPOPTLEN_SACK_OK       2
+#define PICO_TCP_OPTION_SACK        0x05
+#define PICO_TCPOPTLEN_SACK       2 /* Plus the block */
+#define PICO_TCP_OPTION_TIMESTAMP   0x08
+#define PICO_TCPOPTLEN_TIMESTAMP  10
+
+/* TCP flags */
+#define PICO_TCP_FIN 0x01
+#define PICO_TCP_SYN 0x02
+#define PICO_TCP_RST 0x04
+#define PICO_TCP_PSH 0x08
+#define PICO_TCP_ACK 0x10
+#define PICO_TCP_URG 0x20
+#define PICO_TCP_ECN 0x40
+#define PICO_TCP_CWR 0x80
+
+
+
+struct __attribute__((packed)) pico_tcp_option
+{
+  uint8_t kind;
+  uint8_t len;
+#if 0
+  union {
+   uint16_t mss;
+    uint8_t wshift;
+    struct {
+      uint32_t tsval;
+      uint32_t tsecr;
+    } timestamp;
+  } data;
+#endif
+};
+
+struct pico_socket *pico_tcp_open(void);
+int pico_tcp_read(struct pico_socket *s, void *buf, int len);
+int pico_tcp_initconn(struct pico_socket *s);
+int pico_tcp_input(struct pico_socket *s, struct pico_frame *f);
+uint16_t pico_tcp_checksum_ipv4(struct pico_frame *f);
+int pico_tcp_overhead(struct pico_socket *s);
+int pico_tcp_output(struct pico_socket *s, int loop_score);
+int pico_tcp_queue_in_is_empty(struct pico_socket *s);
+int pico_tcp_reply_rst(struct pico_frame *f);
+
+#endif