uip6.c File Reference

    The uIP TCP/IPv6 stack code.

Author

Adam Dunkels adam@.nosp@m.sics.nosp@m..se

Julien Abeille jabei.nosp@m.lle@.nosp@m.cisco.nosp@m..com (IPv6 related code)

Mathilde Durvy mdurv.nosp@m.y@ci.nosp@m.sco.c.nosp@m.om (IPv6 related code)

#include "uip.h"
#include "uipopt.h"
#include "uip-icmp6.h"
#include "uip-nd6.h"
#include "uip-ds6.h"
#include "uip-mcast6.h"
#include "uip_arch.h"
#include <string.h>
#include "uip-debug.h"
#include "rpl/rpl.h"

Macros
#define	_DEBUG_   DEBUG_NONE
#define	MIN(a, b)   ((a) < (b)? (a): (b))
#define	UIP_LOG(m)
Buffer defines
#define	FBUF   ((struct uip_tcpip_hdr *)&uip_reassbuf[0])
#define	UIP_IP_BUF   ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#define	UIP_ICMP_BUF   ((struct uip_icmp_hdr *)&uip_buf[uip_l2_l3_hdr_len])
#define	UIP_UDP_BUF   ((struct uip_udp_hdr *)&uip_buf[UIP_LLH_LEN + UIP_IPH_LEN])
#define	UIP_TCP_BUF   ((struct uip_tcp_hdr *)&uip_buf[UIP_LLH_LEN + UIP_IPH_LEN])
#define	UIP_EXT_BUF   ((struct uip_ext_hdr *)&uip_buf[uip_l2_l3_hdr_len])
#define	UIP_ROUTING_BUF   ((struct uip_routing_hdr *)&uip_buf[uip_l2_l3_hdr_len])
#define	UIP_FRAG_BUF   ((struct uip_frag_hdr *)&uip_buf[uip_l2_l3_hdr_len])
#define	UIP_HBHO_BUF   ((struct uip_hbho_hdr *)&uip_buf[uip_l2_l3_hdr_len])
#define	UIP_DESTO_BUF   ((struct uip_desto_hdr *)&uip_buf[uip_l2_l3_hdr_len])
#define	UIP_EXT_HDR_OPT_BUF   ((struct uip_ext_hdr_opt *)&uip_buf[uip_l2_l3_hdr_len + uip_ext_opt_offset])
#define	UIP_EXT_HDR_OPT_PADN_BUF   ((struct uip_ext_hdr_opt_padn *)&uip_buf[uip_l2_l3_hdr_len + uip_ext_opt_offset])
#define	UIP_EXT_HDR_OPT_RPL_BUF   ((struct uip_ext_hdr_opt_rpl *)&uip_buf[uip_l2_l3_hdr_len + uip_ext_opt_offset])
#define	UIP_ICMP6_ERROR_BUF   ((struct uip_icmp6_error *)&uip_buf[uip_l2_l3_icmp_hdr_len])
TCP defines
#define	TCP_FIN   0x01
#define	TCP_SYN   0x02
#define	TCP_RST   0x04
#define	TCP_PSH   0x08
#define	TCP_ACK   0x10
#define	TCP_URG   0x20
#define	TCP_CTL   0x3f
#define	TCP_OPT_END   0 /* End of TCP options list */
#define	TCP_OPT_NOOP   1 /* "No-operation" TCP option */
#define	TCP_OPT_MSS   2 /* Maximum segment size TCP option */
#define	TCP_OPT_MSS_LEN   4 /* Length of TCP MSS option. */

Functions
static uint16_t	chksum (uint16_t sum, const uint8_t *data, uint16_t len)
static uint8_t	ext_hdr_options_process (void)
	Process the options in Destination and Hop By Hop extension headers. More...
void	remove_ext_hdr (void)
void	uip_add32 (uint8_t *op32, uint16_t op16)
	Carry out a 32-bit addition. More...
static void	uip_add_rcv_nxt (uint16_t n)
uint16_t	uip_chksum (uint16_t *data, uint16_t len)
	Calculate the Internet checksum over a buffer. More...
struct uip_conn *	uip_connect (uip_ipaddr_t *ripaddr, uint16_t rport)
	Connect to a remote host using TCP. More...
uint32_t	uip_htonl (uint32_t val)
uint16_t	uip_htons (uint16_t val)
	Convert 16-bit quantity from host byte order to network byte order. More...
uint16_t	uip_icmp6chksum (void)
	Calculate the ICMP checksum of the packet in uip_buf. More...
void	uip_init (void)
	uIP initialization function. More...
uint16_t	uip_ipchksum (void)
	Calculate the IP header checksum of the packet header in uip_buf. More...
void	uip_listen (uint16_t port)
	Start listening to the specified port. More...
void	uip_process (uint8_t flag)
	process the options within a hop by hop or destination option header More...
void	uip_send (const void *data, int len)
	Send data on the current connection. More...
uint16_t	uip_tcpchksum (void)
	Calculate the TCP checksum of the packet in uip_buf and uip_appdata. More...
struct uip_udp_conn *	uip_udp_new (const uip_ipaddr_t *ripaddr, uint16_t rport)
	Set up a new UDP connection. More...
uint16_t	uip_udpchksum (void)
	Calculate the UDP checksum of the packet in uip_buf and uip_appdata. More...
void	uip_unlisten (uint16_t port)
	Stop listening to the specified port. More...
static uint16_t	upper_layer_chksum (uint8_t proto)

Variables
Layer 2 variables
uip_lladdr_t	uip_lladdr
	Host L2 address. More...
Layer 3 variables
uint8_t *	uip_next_hdr
	Type of the next header in IPv6 header or extension headers. More...
uint8_t	uip_ext_bitmap = 0
	bitmap we use to record which IPv6 headers we have already seen More...
uint8_t	uip_ext_len = 0
	length of the extension headers read. More...
uint8_t	uip_ext_opt_offset = 0
	length of the header options read More...
Buffer variables
uip_buf_t	uip_aligned_buf
	Packet buffer for incoming and outgoing packets. More...
void *	uip_appdata
	Pointer to the application data in the packet buffer. More...
void *	uip_sappdata
uint16_t	uip_len
	The length of the packet in the uip_buf buffer. More...
uint16_t	uip_slen
General variables
uint8_t	uip_flags
struct uip_conn *	uip_conn
	Pointer to the current TCP connection. More...
static uint8_t	c
static uint16_t	lastport
TCP variables
struct uip_conn	uip_conns [UIP_CONNS]
uint16_t	uip_listenports [UIP_LISTENPORTS]
static uint8_t	iss [4]
uint8_t	uip_acc32 [4]
	4-byte array used for the 32-bit sequence number calculations. More...
static uint8_t	opt
static uint16_t	tmp16
UDP variables
struct uip_udp_conn *	uip_udp_conn
	The current UDP connection. More...
struct uip_udp_conn	uip_udp_conns [UIP_UDP_CONNS]
ICMPv6 variables
struct uip_icmp6_conn	uip_icmp6_conns
	single possible icmpv6 "connection" More...

#define MIN	(		a,
			b
	)		((a) < (b)? (a): (b))

Referenced by uip_send().