Uip

{@

Modules
	Serial Line IP (SLIP) protocol
	The SLIP protocol is a very simple way to transmit IP packets over a serial line.
	uIP hostname resolver functions
	The uIP DNS resolver functions are used to lookup a hostname and map it to a numerical IP address.
	Protosockets library
	The protosocket library provides an interface to the uIP stack that is similar to the traditional BSD socket interface.
	uIP configuration functions
	The uIP configuration functions are used for setting run-time parameters in uIP such as IP addresses.
	uIP initialization functions
	The uIP initialization functions are used for booting uIP.
	uIP device driver functions
	These functions are used by a network device driver for interacting with uIP.
	uIP application functions
	Functions used by an application running of top of uIP.
	uIP conversion functions
	These functions can be used for converting between different data formats used by uIP.
	Variables used in uIP device drivers
	uIP has a few global variables that are used in device drivers for uIP.
	Configuration options for uIP
	uIP is configured using the per-project configuration file "uipopt.h".
	The Contiki/uIP interface
	TCP/IP support in Contiki is implemented using the uIP TCP/IP stack.
	uIP TCP throughput booster hack
	The basic uIP TCP implementation only allows each TCP connection to have a single TCP segment in flight at any given time.
	Simple-udp
	The default Contiki UDP API is difficult to use.
	uIP packet forwarding
	uIP Address Resolution Protocol
	The Address Resolution Protocol ARP is used for mapping between IP addresses and link level addresses such as the Ethernet MAC addresses.
	Architecture specific uIP functions
	The functions in the architecture specific module implement the IP check sum and 32-bit additions.

Data Structures
struct	uip_80211_addr
	802.11 address More...
struct	uip_802154_longaddr
	64 bit 802.15.4 address More...
struct	uip_802154_shortaddr
	16 bit 802.15.4 address More...
struct	uip_conn
	Representation of a uIP TCP connection. More...
struct	uip_desto_hdr
struct	uip_eth_addr
	802.3 address More...
struct	uip_ext_hdr
struct	uip_ext_hdr_opt
struct	uip_ext_hdr_opt_padn
struct	uip_ext_hdr_opt_rpl
struct	uip_fallback_interface
struct	uip_frag_hdr
struct	uip_hbho_hdr
struct	uip_icmp_hdr
struct	uip_icmpip_hdr
union	uip_ip4addr_t
	Representation of an IP address. More...
union	uip_ip6addr_t
struct	uip_ip_hdr
struct	uip_routing_hdr
struct	uip_stats
	The structure holding the TCP/IP statistics that are gathered if UIP_STATISTICS is set to 1. More...
struct	uip_tcp_hdr
struct	uip_tcpip_hdr
struct	uip_udp_conn
	Representation of a uIP UDP connection. More...
struct	uip_udp_hdr
struct	uip_udpip_hdr

Files
file	uip.c
	The uIP TCP/IP stack code.
file	uip.h
	Header file for the uIP TCP/IP stack.

Macros
#define	UIP_ABORT
#define	UIP_ACKDATA
#define	UIP_APPDATA_PTR   (void *)&uip_buf[UIP_LLH_LEN + UIP_TCPIP_HLEN]
#define	UIP_APPDATA_SIZE
	The buffer size available for user data in the uip_buf buffer. More...
#define	uip_are_solicited_bytes_equal(a, b)
	are last three bytes of both addresses equal? This is used to compare solicited node multicast addresses More...
#define	UIP_CLOSE
#define	UIP_CLOSED   0
#define	UIP_CLOSING   6
#define	UIP_CONNECTED
#define	uip_create_linklocal_allnodes_mcast(a)   uip_ip6addr(a, 0xff02, 0, 0, 0, 0, 0, 0, 0x0001)
	set IP address a to the link local all-nodes multicast address More...
#define	uip_create_linklocal_allrouters_mcast(a)   uip_ip6addr(a, 0xff02, 0, 0, 0, 0, 0, 0, 0x0002)
	set IP address a to the link local all-routers multicast address More...
#define	uip_create_linklocal_prefix(addr)
#define	uip_create_solicited_node(a, b)
	in b the solicited node address corresponding to address a both a and b are of type uip_ipaddr_t* More...
#define	uip_create_unspecified(a)   uip_ip6addr(a, 0, 0, 0, 0, 0, 0, 0, 0)
	set IP address a to unspecified More...
#define	UIP_DATA
#define	UIP_ESTABLISHED   3
#define	UIP_FIN_WAIT_1   4
#define	UIP_FIN_WAIT_2   5
#define	UIP_FRAGH_LEN   8
#define	UIP_ICMPH_LEN   4 /* Size of ICMP header */
#define	UIP_IPH_LEN   40
#define	UIP_IPICMPH_LEN
#define	UIP_IPTCPH_LEN
#define	UIP_IPUDPH_LEN
#define	uip_is_addr_link_local(a)
	is addr (a) a link local unicast address, see RFC3513 i.e. More...
#define	uip_is_addr_linklocal(a)
	Checks whether the address a is link local. More...
#define	uip_is_addr_linklocal_allnodes_mcast(a)
	Is IPv6 address a the link local all-nodes multicast address. More...
#define	uip_is_addr_linklocal_allrouters_mcast(a)
	Is IPv6 address a the link local all-routers multicast address. More...
#define	uip_is_addr_loopback(a)
	Is IPv6 address a the unspecified address a is of type uip_ipaddr_t. More...
#define	uip_is_addr_mac_addr_based(a, m)
	was addr (a) forged based on the mac address m a type is uip_ipaddr_t m type is uiplladdr_t More...
#define	uip_is_addr_mcast(a)   (((a)->u8[0]) == 0xFF)
	is address a multicast address, see RFC 3513 a is of type uip_ipaddr_t* More...
#define	uip_is_addr_mcast_global(a)
	is address a global multicast address (FFxE::/16), a is of type uip_ip6addr_t* More...
#define	uip_is_addr_mcast_non_routable(a)
	is address a non-routable multicast address. More...
#define	uip_is_addr_mcast_routable(a)
	is address a routable multicast address. More...
#define	uip_is_addr_solicited_node(a)
	is addr (a) a solicited node multicast address, see RFC3513 a is of type uip_ipaddr_t* More...
#define	uip_is_addr_unspecified(a)
	Is IPv6 address a the unspecified address a is of type uip_ipaddr_t. More...
#define	uip_is_mcast_group_id_all_nodes(a)
	is group-id of multicast address a the all nodes group-id More...
#define	uip_is_mcast_group_id_all_routers(a)
	is group-id of multicast address a the all routers group-id More...
#define	uip_l2_l3_hdr_len   (UIP_LLH_LEN + UIP_IPH_LEN + uip_ext_len)
	The sums below are quite used in ND. More...
#define	uip_l2_l3_icmp_hdr_len   (UIP_LLH_LEN + UIP_IPH_LEN + uip_ext_len + UIP_ICMPH_LEN)
#define	uip_l3_hdr_len   (UIP_IPH_LEN + uip_ext_len)
#define	uip_l3_icmp_hdr_len   (UIP_IPH_LEN + uip_ext_len + UIP_ICMPH_LEN)
#define	UIP_LAST_ACK   8
#define	UIP_LLADDR_LEN   6
#define	UIP_LLIPH_LEN
#define	UIP_LLPREF_LEN   10
	Length of the link local prefix. More...
#define	UIP_NEWDATA
#define	UIP_POLL
#define	UIP_POLL_REQUEST
#define	UIP_PROTO_ICMP   1
#define	UIP_PROTO_ICMP6   58
#define	UIP_PROTO_TCP   6
#define	UIP_PROTO_UDP   17
#define	UIP_REXMIT
#define	UIP_STAT(s)
	The uIP TCP/IP statistics. More...
#define	UIP_STOPPED   16
#define	UIP_SYN_RCVD   1
#define	UIP_SYN_SENT   2
#define	UIP_TCPH_LEN   20 /* Size of TCP header */
#define	UIP_TCPIP_HLEN   UIP_IPTCPH_LEN
#define	UIP_TIME_WAIT   7
#define	UIP_TIMEDOUT
#define	UIP_TIMER
#define	UIP_TS_MASK   15
#define	UIP_UDP_SEND_CONN
#define	UIP_UDPH_LEN   8 /* Size of UDP header */

Typedefs
typedef struct uip_80211_addr	uip_80211_addr
	802.11 address More...
typedef struct uip_802154_longaddr	uip_802154_longaddr
	64 bit 802.15.4 address More...
typedef struct uip_802154_shortaddr	uip_802154_shortaddr
	16 bit 802.15.4 address More...
typedef struct uip_desto_hdr	uip_desto_hdr
typedef struct uip_eth_addr	uip_eth_addr
	802.3 address More...
typedef struct uip_ext_hdr	uip_ext_hdr
typedef struct uip_ext_hdr_opt	uip_ext_hdr_opt
typedef struct uip_ext_hdr_opt_padn	uip_ext_hdr_opt_padn
typedef struct uip_ext_hdr_opt_rpl	uip_ext_hdr_opt_rpl
typedef struct uip_frag_hdr	uip_frag_hdr
typedef struct uip_hbho_hdr	uip_hbho_hdr
typedef union uip_ip4addr_t	uip_ip4addr_t
	Representation of an IP address. More...
typedef union uip_ip6addr_t	uip_ip6addr_t
typedef uip_ip6addr_t	uip_ipaddr_t
typedef uip_eth_addr	uip_lladdr_t
	Ethernet address. More...
typedef struct uip_routing_hdr	uip_routing_hdr

Functions
void	remove_ext_hdr (void)
uint16_t	uip_chksum (uint16_t *buf, uint16_t len)
	Calculate the Internet checksum over a buffer. More...
uint16_t	uip_icmp6chksum (void)
	Calculate the ICMP checksum of the packet in uip_buf. More...
uint16_t	uip_ipchksum (void)
	Calculate the IP header checksum of the packet header in uip_buf. More...
void	uip_process (uint8_t flag)
	process the options within a hop by hop or destination option header More...
uint16_t	uip_tcpchksum (void)
	Calculate the TCP checksum of the packet in uip_buf and uip_appdata. More...
uint16_t	uip_udpchksum (void)
	Calculate the UDP checksum of the packet in uip_buf and uip_appdata. More...

Variables
CCIF const uip_ipaddr_t	uip_all_zeroes_addr
CCIF void *	uip_appdata
	Pointer to the application data in the packet buffer. More...
CCIF const uip_ipaddr_t	uip_broadcast_addr
CCIF struct uip_conn *	uip_conn
	Pointer to the current TCP connection. More...
CCIF uip_ipaddr_t	uip_draddr
CCIF uint8_t	uip_flags
CCIF uip_ipaddr_t	uip_hostaddr
CCIF uip_lladdr_t	uip_lladdr
	Host L2 address. More...
CCIF uip_ipaddr_t	uip_netmask
struct uip_udp_conn *	uip_udp_conn
	The current UDP connection. More...
struct uip_udp_conn	uip_udp_conns [UIP_UDP_CONNS]
#define	UIP_PROTO_HBHO   0
	extension headers types More...
#define	UIP_PROTO_DESTO   60
#define	UIP_PROTO_ROUTING   43
#define	UIP_PROTO_FRAG   44
#define	UIP_PROTO_NONE   59
#define	UIP_EXT_HDR_OPT_PAD1   0
	Destination and Hop By Hop extension headers option types. More...
#define	UIP_EXT_HDR_OPT_PADN   1
#define	UIP_EXT_HDR_OPT_RPL   0x63
#define	UIP_EXT_HDR_BITMAP_HBHO   0x01
	Bitmaps for extension header processing. More...
#define	UIP_EXT_HDR_BITMAP_DESTO1   0x02
#define	UIP_EXT_HDR_BITMAP_ROUTING   0x04
#define	UIP_EXT_HDR_BITMAP_FRAG   0x08
#define	UIP_EXT_HDR_BITMAP_AH   0x10
#define	UIP_EXT_HDR_BITMAP_ESP   0x20
#define	UIP_EXT_HDR_BITMAP_DESTO2   0x40

#define UIP_ABORT

Value:

32    /* The remote host has aborted the
                   connection, thus the connection has
                   gone away. Or the application signals
                   that it wants to abort the
                   connection. */

Referenced by uip_process().

#define UIP_ACKDATA

Value:

1     /* Signifies that the outstanding data was
                   acked and the application should send
                   out new data instead of retransmitting
                   the last data. */

Referenced by uip_process().

#define UIP_APPDATA_PTR   (void *)&uip_buf[UIP_LLH_LEN + UIP_TCPIP_HLEN]

#define UIP_APPDATA_SIZE

The buffer size available for user data in the uip_buf buffer.

This macro holds the available size for user data in the uip_buf buffer. The macro is intended to be used for checking bounds of available user data.

Example:

snprintf(uip_appdata, UIP_APPDATA_SIZE, "%u\n", i);

#define uip_are_solicited_bytes_equal	(		a,
			b
	)

Value:

((((a)->u8[13])  == ((b)->u8[13])) &&                 \
   (((a)->u8[14])  == ((b)->u8[14])) &&                 \
   (((a)->u8[15])  == ((b)->u8[15])))

are last three bytes of both addresses equal? This is used to compare solicited node multicast addresses

#define UIP_CLOSE

Value:

16    /* The remote host has closed the
                   connection, thus the connection has
                   gone away. Or the application signals
                   that it wants to close the
                   connection. */

Referenced by uip_process().

#define UIP_CLOSED   0

Referenced by eventhandler(), for(), uip_init(), and uip_process().

#define UIP_CLOSING   6

Referenced by uip_process().

#define UIP_CONNECTED

Value:

64    /* We have got a connection from a remote
                               host and have set up a new connection
                               for it, or an active connection has
                               been successfully established. */

Referenced by uip_process().

#define uip_create_linklocal_allnodes_mcast

(

a

)

uip_ip6addr(a, 0xff02, 0, 0, 0, 0, 0, 0, 0x0001)

set IP address a to the link local all-nodes multicast address

Referenced by ip64_4to6(), ns_input(), PROCESS_THREAD(), send_msg(), and uip_ds6_init().

#define uip_create_linklocal_allrouters_mcast

(

a

)

uip_ip6addr(a, 0xff02, 0, 0, 0, 0, 0, 0, 0x0002)

set IP address a to the link local all-routers multicast address

Referenced by uip_ds6_init(), and uip_nd6_rs_output().

#define uip_create_linklocal_prefix

(

addr

)

Value:

do { \
    (addr)->u16[0] = UIP_HTONS(0xfe80);            \
    (addr)->u16[1] = 0;                        \
    (addr)->u16[2] = 0;                        \
    (addr)->u16[3] = 0;                        \
  } while(0)

Referenced by uip_ds6_init().

#define uip_create_solicited_node	(		a,
			b
	)

Value:

(((b)->u8[0]) = 0xFF);                        \
  (((b)->u8[1]) = 0x02);                        \
  (((b)->u16[1]) = 0);                          \
  (((b)->u16[2]) = 0);                          \
  (((b)->u16[3]) = 0);                          \
  (((b)->u16[4]) = 0);                          \
  (((b)->u8[10]) = 0);                          \
  (((b)->u8[11]) = 0x01);                       \
  (((b)->u8[12]) = 0xFF);                       \
  (((b)->u8[13]) = ((a)->u8[13]));              \
  (((b)->u16[7]) = ((a)->u16[7]))

in b the solicited node address corresponding to address a both a and b are of type uip_ipaddr_t*

Referenced by uip_ds6_addr_add(), uip_ds6_addr_rm(), and uip_nd6_ns_output().

#define uip_create_unspecified

(

a

)

uip_ip6addr(a, 0, 0, 0, 0, 0, 0, 0, 0)

set IP address a to unspecified

Referenced by uip_ds6_defrt_add(), uip_ds6_defrt_choose(), uip_ds6_select_src(), and uip_nd6_ns_output().

#define UIP_DATA

Value:

1     /* Tells uIP that there is incoming
                   data in the uip_buf buffer. The
                   length of the data is stored in the
                   global variable uip_len. */

#define UIP_ESTABLISHED   3

Referenced by uip_process().

#define UIP_EXT_HDR_BITMAP_AH   0x10

#define UIP_EXT_HDR_BITMAP_DESTO1   0x02

Referenced by uip_process().

#define UIP_EXT_HDR_BITMAP_DESTO2   0x40

Referenced by uip_process().

#define UIP_EXT_HDR_BITMAP_ESP   0x20

#define UIP_EXT_HDR_BITMAP_FRAG   0x08

#define UIP_EXT_HDR_BITMAP_HBHO   0x01

Bitmaps for extension header processing.

When processing extension headers, we should record somehow which one we see, because you cannot have twice the same header, except for destination We store all this in one uint8_t bitmap one bit for each header expected. The order in the bitmap is the order recommended in RFC2460

Referenced by uip_process().

#define UIP_EXT_HDR_BITMAP_ROUTING   0x04

Referenced by uip_process().

#define UIP_EXT_HDR_OPT_PAD1   0

Destination and Hop By Hop extension headers option types.

Referenced by ext_hdr_options_process().

#define UIP_EXT_HDR_OPT_PADN   1

Referenced by ext_hdr_options_process().

#define UIP_EXT_HDR_OPT_RPL   0x63

Referenced by ext_hdr_options_process(), rpl_insert_header(), rpl_invert_header(), rpl_update_header_empty(), rpl_update_header_final(), and set_rpl_opt().

#define UIP_FIN_WAIT_1   4

Referenced by uip_process().

#define UIP_FIN_WAIT_2   5

Referenced by uip_process().

#define UIP_FRAGH_LEN   8

#define UIP_ICMPH_LEN   4 /* Size of ICMP header */

Referenced by echo_reply_input(), echo_request_input(), ns_input(), uip_icmp6_send(), uip_nd6_ns_output(), and uip_nd6_rs_output().

#define UIP_IPH_LEN   40

Referenced by compress_hdr_hc06(), compress_hdr_hc1(), compress_hdr_ipv6(), echo_reply_input(), echo_request_input(), ext_hdr_options_process(), input(), ns_input(), remove_ext_hdr(), rpl_remove_header(), set_rpl_opt(), time_exceeded(), uip_icmp6_error_output(), uip_icmp6_send(), uip_ipchksum(), uip_nd6_ns_output(), uip_process(), uip_split_output(), uncompress_hdr_hc06(), uncompress_hdr_hc1(), and upper_layer_chksum().

#define UIP_IPICMPH_LEN

Value:

(UIP_IPH_LEN + UIP_ICMPH_LEN) /* size of ICMP
                                                         + IP header */

Referenced by uip_icmp6_error_output().

#define UIP_IPTCPH_LEN

Value:

(UIP_TCPH_LEN + UIP_IPH_LEN)    /* Size of IP +
                               * TCP
                               * header */

Referenced by uip_process().

#define UIP_IPUDPH_LEN

Value:

(UIP_UDPH_LEN + UIP_IPH_LEN)    /* Size of IP +
                        * UDP
                               * header */

Referenced by uip_process(), and uip_udp_packet_send().

#define uip_is_addr_link_local

(

a

)

Value:

((((a)->u8[0]) == 0xFE) && \
  (((a)->u8[1]) == 0x80))

is addr (a) a link local unicast address, see RFC3513 i.e.

is (a) on prefix FE80::/10 a is of type uip_ipaddr_t*

Referenced by compress_hdr_hc06(), compress_hdr_hc1(), get_global_addr(), ra_input(), simple_rpl_global_address(), simple_rpl_init_dag_immediately(), uip_ds6_get_global(), uip_ds6_get_link_local(), uip_ds6_select_src(), and uip_process().

#define uip_is_addr_linklocal

(

a

)

Value:

((a)->u8[0] == 0xfe &&                         \
   (a)->u8[1] == 0x80)

Checks whether the address a is link local.

a is of type uip_ipaddr_t

#define uip_is_addr_linklocal_allnodes_mcast

(

a

)

Value:

((((a)->u8[0]) == 0xff) &&                        \
   (((a)->u8[1]) == 0x02) &&                        \
   (((a)->u16[1]) == 0) &&                          \
   (((a)->u16[2]) == 0) &&                          \
   (((a)->u16[3]) == 0) &&                          \
   (((a)->u16[4]) == 0) &&                          \
   (((a)->u16[5]) == 0) &&                          \
   (((a)->u16[6]) == 0) &&                          \
   (((a)->u8[14]) == 0) &&                          \
   (((a)->u8[15]) == 0x01))

Is IPv6 address a the link local all-nodes multicast address.

#define uip_is_addr_linklocal_allrouters_mcast

(

a

)

Value:

((((a)->u8[0]) == 0xff) &&                        \
   (((a)->u8[1]) == 0x02) &&                        \
   (((a)->u16[1]) == 0) &&                          \
   (((a)->u16[2]) == 0) &&                          \
   (((a)->u16[3]) == 0) &&                          \
   (((a)->u16[4]) == 0) &&                          \
   (((a)->u16[5]) == 0) &&                          \
   (((a)->u16[6]) == 0) &&                          \
   (((a)->u8[14]) == 0) &&                          \
   (((a)->u8[15]) == 0x02))

Is IPv6 address a the link local all-routers multicast address.

#define uip_is_addr_loopback

(

a

)

Value:

((((a)->u16[0]) == 0) &&                       \
   (((a)->u16[1]) == 0) &&                       \
   (((a)->u16[2]) == 0) &&                       \
   (((a)->u16[3]) == 0) &&                       \
   (((a)->u16[4]) == 0) &&                       \
   (((a)->u16[5]) == 0) &&                       \
   (((a)->u16[6]) == 0) &&                       \
   (((a)->u8[14]) == 0) &&                       \
   (((a)->u8[15]) == 0x01))

Is IPv6 address a the unspecified address a is of type uip_ipaddr_t.

Referenced by uip_process().

#define uip_is_addr_mac_addr_based	(		a,
			m
	)

Value:

((((a)->u8[8])  == (((m)->addr[0]) | 0x02)) &&   \
   (((a)->u8[9])  == (m)->addr[1]) &&            \
   (((a)->u8[10]) == (m)->addr[2]) &&            \
   (((a)->u8[11]) == 0xff) &&            \
   (((a)->u8[12]) == 0xfe) &&            \
   (((a)->u8[13]) == (m)->addr[3]) &&            \
   (((a)->u8[14]) == (m)->addr[4]) &&            \
   (((a)->u8[15]) == (m)->addr[5]))

was addr (a) forged based on the mac address m a type is uip_ipaddr_t m type is uiplladdr_t

Referenced by compress_addr_64(), and compress_hdr_hc1().

#define uip_is_addr_mcast

(

a

)

(((a)->u8[0]) == 0xFF)

is address a multicast address, see RFC 3513 a is of type uip_ipaddr_t*

Referenced by compress_hdr_hc06(), dao_input(), dis_input(), echo_request_input(), ext_hdr_options_process(), na_input(), ns_input(), tcpip_ipv6_output(), uip_ds6_select_src(), uip_icmp6_error_output(), and uip_process().

#define uip_is_addr_mcast_global

(

a

)

Value:

((((a)->u8[0]) == 0xFF) && \
   (((a)->u8[1] & 0x0F) == 0x0E))

is address a global multicast address (FFxE::/16), a is of type uip_ip6addr_t*

Referenced by dao_input(), and handle_dao_timer().

#define uip_is_addr_mcast_non_routable

(

a

)

Value:

((((a)->u8[0]) == 0xFF) && \
   (((a)->u8[1] & 0x0F) <= 0x02))

is address a non-routable multicast address.

Scopes 1 (interface-local) and 2 (link-local) are non-routable See RFC4291 and draft-ietf-6man-multicast-scopes a is of type uip_ip6addr_t*

#define uip_is_addr_mcast_routable

(

a

)

Value:

((((a)->u8[0]) == 0xFF) && \
   (((a)->u8[1] & 0x0F) > 0x02))

is address a routable multicast address.

Scope 3 (Realm-Local) or higher are routable Realm-Local scope is defined in draft-ietf-6man-multicast-scopes See RFC4291 and draft-ietf-6man-multicast-scopes a is of type uip_ip6addr_t*

Referenced by uip_ds6_select_src(), uip_process(), and uip_udp_packet_send().

#define uip_is_addr_solicited_node

(

a

)

Value:

((((a)->u8[0])  == 0xFF) &&                  \
   (((a)->u8[1])  == 0x02) &&                  \
   (((a)->u16[1]) == 0x00) &&                  \
   (((a)->u16[2]) == 0x00) &&                  \
   (((a)->u16[3]) == 0x00) &&                  \
   (((a)->u16[4]) == 0x00) &&                  \
   (((a)->u8[10]) == 0x00) &&                  \
   (((a)->u8[11]) == 0x01) &&                  \
   (((a)->u8[12]) == 0xFF))

is addr (a) a solicited node multicast address, see RFC3513 a is of type uip_ipaddr_t*

Referenced by ns_input().

#define uip_is_addr_unspecified

(

a

)

Value:

((((a)->u16[0]) == 0) &&                       \
   (((a)->u16[1]) == 0) &&                       \
   (((a)->u16[2]) == 0) &&                       \
   (((a)->u16[3]) == 0) &&                       \
   (((a)->u16[4]) == 0) &&                       \
   (((a)->u16[5]) == 0) &&                       \
   (((a)->u16[6]) == 0) &&                       \
   (((a)->u16[7]) == 0))

Is IPv6 address a the unspecified address a is of type uip_ipaddr_t.

Referenced by compress_hdr_hc06(), ns_input(), route_callback(), tcpip_ipv6_output(), uip_icmp6_error_output(), uip_nd6_ns_output(), uip_nd6_rs_output(), and uip_process().

#define uip_is_mcast_group_id_all_nodes

(

a

)

Value:

((((a)->u16[1])  == 0) &&                 \
   (((a)->u16[2])  == 0) &&                 \
   (((a)->u16[3])  == 0) &&                 \
   (((a)->u16[4])  == 0) &&                 \
   (((a)->u16[5])  == 0) &&                 \
   (((a)->u16[6])  == 0) &&                 \
   (((a)->u8[14])  == 0) &&                 \
   (((a)->u8[15])  == 1))

is group-id of multicast address a the all nodes group-id

#define uip_is_mcast_group_id_all_routers

(

a

)

Value:

((((a)->u16[1])  == 0) &&                 \
   (((a)->u16[2])  == 0) &&                 \
   (((a)->u16[3])  == 0) &&                 \
   (((a)->u16[4])  == 0) &&                 \
   (((a)->u16[5])  == 0) &&                 \
   (((a)->u16[6])  == 0) &&                 \
   (((a)->u8[14])  == 0) &&                 \
   (((a)->u8[15])  == 2))

is group-id of multicast address a the all routers group-id

#define uip_l2_l3_hdr_len   (UIP_LLH_LEN + UIP_IPH_LEN + uip_ext_len)

The sums below are quite used in ND.

When used for uip_buf, we include link layer length when used for uip_len, we do not, hence we need values with and without LLH_LEN we do not use capital letters as these values are variable

#define uip_l2_l3_icmp_hdr_len   (UIP_LLH_LEN + UIP_IPH_LEN + uip_ext_len + UIP_ICMPH_LEN)

Referenced by ns_input(), uip_nd6_ns_output(), and uip_nd6_rs_output().

#define uip_l3_hdr_len   (UIP_IPH_LEN + uip_ext_len)

#define uip_l3_icmp_hdr_len   (UIP_IPH_LEN + uip_ext_len + UIP_ICMPH_LEN)

Referenced by dao_ack_input(), dao_input(), dio_input(), na_input(), ns_input(), ra_input(), and uip_nd6_rs_output().

#define UIP_LAST_ACK   8

Referenced by uip_process().

#define UIP_LLADDR_LEN   6

Referenced by create_llao(), na_input(), ns_input(), ra_input(), and uip_ds6_set_addr_iid().

#define UIP_LLIPH_LEN

Value:

(UIP_LLH_LEN + UIP_IPH_LEN)    /* size of L2
                                                        + IP header */

Referenced by uncompress_hdr_hc06(), and uncompress_hdr_hc1().

#define UIP_LLPREF_LEN   10

Length of the link local prefix.

#define UIP_NEWDATA

Value:

2     /* Flags the fact that the peer has sent
                   us new data. */

Referenced by uip_process().

#define UIP_POLL

Value:

8     /* Used for polling the application, to
                   check if the application has data that
                   it wants to send. */

Referenced by uip_process().

#define UIP_POLL_REQUEST

Value:

3     /* Tells uIP that a connection should
                   be polled. */

Referenced by uip_process().

#define UIP_PROTO_DESTO   60

Referenced by uip_process().

#define UIP_PROTO_FRAG   44

Referenced by uip_process().

#define UIP_PROTO_HBHO   0

extension headers types

Referenced by rpl_invert_header(), rpl_remove_header(), rpl_update_header_empty(), rpl_update_header_final(), set_rpl_opt(), and uip_process().

#define UIP_PROTO_ICMP   1

Referenced by time_exceeded(), and uip_fw_forward().

#define UIP_PROTO_ICMP6   58

Referenced by compress_hdr_hc1(), echo_reply_input(), echo_request_input(), ns_input(), set_packet_attrs(), uip_icmp6_error_output(), uip_icmp6_send(), uip_icmp6chksum(), uip_nd6_ns_output(), uip_nd6_rs_output(), uip_process(), and uncompress_hdr_hc1().

#define UIP_PROTO_NONE   59

Referenced by uip_process().

#define UIP_PROTO_ROUTING   43

Referenced by uip_process().

#define UIP_PROTO_TCP   6

Referenced by check_for_tcp_syn(), compress_hdr_hc1(), output(), set_packet_attrs(), uip_over_mesh_send(), uip_process(), uip_split_output(), and uncompress_hdr_hc1().

#define UIP_PROTO_UDP   17

Referenced by compress_hdr_hc06(), compress_hdr_hc1(), set_packet_attrs(), uip_fw_forward(), uip_process(), uncompress_hdr_hc06(), and uncompress_hdr_hc1().

#define UIP_REXMIT

Value:

4     /* Tells the application to retransmit the
                   data that was last sent. */

Referenced by uip_process().

#define UIP_STAT

(

s

)

The uIP TCP/IP statistics.

This is the variable in which the uIP TCP/IP statistics are gathered.

Referenced by echo_request_input(), na_input(), ns_input(), ra_input(), uip_icmp6_error_output(), uip_nd6_ns_output(), uip_nd6_rs_output(), and uip_process().

#define UIP_STOPPED   16

Referenced by uip_process().

#define UIP_SYN_RCVD   1

Referenced by uip_process().

#define UIP_SYN_SENT   2

Referenced by uip_process().

#define UIP_TCPH_LEN   20 /* Size of TCP header */

Referenced by uip_process().

#define UIP_TCPIP_HLEN   UIP_IPTCPH_LEN

Referenced by ip64_arp_create_arp_request(), slip_send(), slipdev_send(), uip_arp_out(), uip_fw_forward(), uip_process(), uip_send(), and uip_split_output().

#define UIP_TIME_WAIT   7

Referenced by uip_process().

#define UIP_TIMEDOUT

Value:

128   /* The connection has been aborted due to
                   too many retransmissions. */

Referenced by uip_process().

#define UIP_TIMER

Value:

2     /* Tells uIP that the periodic timer
                   has fired. */

Referenced by uip_process().

#define UIP_TS_MASK   15

Referenced by for(), make_tcp_stats(), and uip_process().

#define UIP_UDP_SEND_CONN

Value:

4     /* Tells uIP that a UDP datagram
                   should be constructed in the
                   uip_buf buffer. */

Referenced by uip_process(), and uip_udp_packet_send().

#define UIP_UDPH_LEN   8 /* Size of UDP header */

Referenced by compress_hdr_hc06(), compress_hdr_hc1(), uip_process(), uncompress_hdr_hc06(), and uncompress_hdr_hc1().

typedef struct uip_80211_addr uip_80211_addr

802.11 address

typedef struct uip_802154_longaddr uip_802154_longaddr

64 bit 802.15.4 address

typedef struct uip_802154_shortaddr uip_802154_shortaddr

16 bit 802.15.4 address

typedef struct uip_desto_hdr uip_desto_hdr

typedef struct uip_eth_addr uip_eth_addr

802.3 address

typedef struct uip_ext_hdr uip_ext_hdr

typedef struct uip_ext_hdr_opt uip_ext_hdr_opt

typedef struct uip_ext_hdr_opt_padn uip_ext_hdr_opt_padn

typedef struct uip_ext_hdr_opt_rpl uip_ext_hdr_opt_rpl

typedef struct uip_frag_hdr uip_frag_hdr

typedef struct uip_hbho_hdr uip_hbho_hdr

typedef union uip_ip4addr_t uip_ip4addr_t

Representation of an IP address.

typedef union uip_ip6addr_t uip_ip6addr_t

typedef uip_ip6addr_t uip_ipaddr_t

typedef uip_eth_addr uip_lladdr_t

Ethernet address.

typedef struct uip_routing_hdr uip_routing_hdr

void remove_ext_hdr

(

void

)

References PRINTF, uip_ext_len, UIP_IP_BUF, UIP_IPH_LEN, uip_len, and UIP_TCP_BUF.

Referenced by tcpip_ipv6_output(), and uip_process().

uint16_t uip_chksum	(	uint16_t *	buf,
		uint16_t	len
	)

Calculate the Internet checksum over a buffer.

The Internet checksum is the one's complement of the one's complement sum of all 16-bit words in the buffer.

See RFC1071.

Parameters

buf	A pointer to the buffer over which the checksum is to be computed.
len	The length of the buffer over which the checksum is to be computed.

Returns

The Internet checksum of the buffer.

References chksum(), and uip_htons().

Referenced by time_exceeded().

uint16_t uip_icmp6chksum

(

void

)

Calculate the ICMP checksum of the packet in uip_buf.

Returns

The ICMP checksum of the ICMP packet in uip_buf

References UIP_PROTO_ICMP6, and upper_layer_chksum().

Referenced by echo_request_input(), ns_input(), uip_icmp6_error_output(), uip_icmp6_send(), uip_nd6_ns_output(), uip_nd6_rs_output(), and uip_process().

uint16_t uip_ipchksum

(

void

)

Calculate the IP header checksum of the packet header in uip_buf.

The IP header checksum is the Internet checksum of the 20 bytes of the IP header.

Returns

The IP header checksum of the IP header in the uip_buf buffer.

References chksum(), PRINTF, uip_buf, uip_htons(), UIP_IPH_LEN, and UIP_LLH_LEN.

Referenced by PROCESS_THREAD(), time_exceeded(), and uip_split_output().

void uip_process

(

uint8_t

flag

)

process the options within a hop by hop or destination option header

Return values

0,:	nothing to send,
1,:	drop pkt
2,:	ICMP error message to send

References c, uip_ds6_netif::cur_hop_limit, ext_hdr_options_process(), ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, ICMP6_DST_UNREACH_NOTNEIGHBOR, ICMP6_PACKET_TOO_BIG, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER, ICMP6_PARAMPROB_NEXTHEADER, ICMP6_TIME_EXCEED_TRANSIT, ICMP6_TIME_EXCEEDED, uip_mcast6_driver::in, uip_conn::initialmss, uip_conn::len, uip_conn::lport, uip_udp_conn::lport, uip_conn::mss, uip_conn::nrtx, NULL, PRINT6ADDR, PRINTF, uip_conn::rcv_nxt, remove_ext_hdr(), reset(), uip_conn::ripaddr, uip_udp_conn::ripaddr, rpl_insert_header(), rpl_update_header_empty(), uip_conn::rport, uip_udp_conn::rport, uip_conn::rto, uip_conn::sa, send(), uip_conn::snd_nxt, uip_conn::sv, TCP_ACK, TCP_CTL, TCP_FIN, TCP_OPT_END, TCP_OPT_MSS, TCP_OPT_MSS_LEN, TCP_OPT_NOOP, TCP_PSH, TCP_RST, TCP_SYN, TCP_URG, uip_conn::tcpstateflags, uip_conn::timer, uip_udp_conn::ttl, UIP_ABORT, UIP_ACKDATA, uip_add32(), UIP_APPCALL, uip_appdata, uip_buf, UIP_CLOSE, UIP_CLOSED, UIP_CLOSING, uip_conn, UIP_CONNECTED, UIP_CONNS, uip_ds6_if, uip_ds6_is_addr_onlink(), uip_ds6_is_my_addr, uip_ds6_is_my_maddr, uip_ds6_select_src(), UIP_ESTABLISHED, uip_ext_bitmap, UIP_EXT_BUF, UIP_EXT_HDR_BITMAP_DESTO1, UIP_EXT_HDR_BITMAP_DESTO2, UIP_EXT_HDR_BITMAP_HBHO, UIP_EXT_HDR_BITMAP_ROUTING, uip_ext_len, UIP_FIN_WAIT_1, UIP_FIN_WAIT_2, uip_flags, UIP_HTONS, UIP_ICMP6_APPCALL, uip_icmp6_error_output(), uip_icmp6_input(), UIP_ICMP6_INPUT_ERROR, uip_icmp6chksum(), UIP_ICMP_BUF, UIP_IP_BUF, uip_ipaddr_cmp, uip_ipaddr_copy, UIP_IPH_LEN, UIP_IPTCPH_LEN, UIP_IPUDPH_LEN, uip_is_addr_link_local, uip_is_addr_loopback, uip_is_addr_mcast, uip_is_addr_mcast_routable, uip_is_addr_unspecified, UIP_LAST_ACK, uip_len, UIP_LINK_MTU, UIP_LISTENPORTS, UIP_LLH_LEN, UIP_LOG, UIP_MAXRTX, UIP_MAXSYNRTX, UIP_MCAST6, UIP_MCAST6_ACCEPT, UIP_NEWDATA, uip_next_hdr, uip_outstanding, UIP_POLL, UIP_POLL_REQUEST, UIP_PROTO_DESTO, UIP_PROTO_FRAG, UIP_PROTO_HBHO, UIP_PROTO_ICMP6, UIP_PROTO_NONE, UIP_PROTO_ROUTING, UIP_PROTO_TCP, UIP_PROTO_UDP, UIP_RECEIVE_WINDOW, UIP_REXMIT, UIP_ROUTING_BUF, UIP_RTO, uip_sappdata, uip_slen, UIP_STAT, UIP_STOPPED, UIP_SYN_RCVD, UIP_SYN_SENT, UIP_TCP_BUF, UIP_TCP_MSS, uip_tcpchksum(), UIP_TCPH_LEN, UIP_TCPIP_HLEN, UIP_TIME_WAIT, UIP_TIME_WAIT_TIMEOUT, UIP_TIMEDOUT, UIP_TIMER, UIP_TS_MASK, UIP_UDP_APPCALL, UIP_UDP_BUF, uip_udp_conn, UIP_UDP_CONNS, uip_udp_conns, UIP_UDP_SEND_CONN, uip_udpchksum(), and UIP_UDPH_LEN.

Referenced by uip_udp_packet_send().

uint16_t uip_tcpchksum

(

void

)

Calculate the TCP checksum of the packet in uip_buf and uip_appdata.

The TCP checksum is the Internet checksum of data contents of the TCP segment, and a pseudo-header as defined in RFC793.

Returns

The TCP checksum of the TCP segment in uip_buf and pointed to by uip_appdata.

Referenced by uip_process(), and uip_split_output().

uint16_t uip_udpchksum

(

void

)

Calculate the UDP checksum of the packet in uip_buf and uip_appdata.

The UDP checksum is the Internet checksum of data contents of the UDP segment, and a pseudo-header as defined in RFC768.

Returns

The UDP checksum of the UDP segment in uip_buf and pointed to by uip_appdata.

Referenced by uip_process().

CCIF const uip_ipaddr_t uip_all_zeroes_addr

Referenced by uip_arp_timer(), uip_arp_update(), and uip_fw_forward().

CCIF void* uip_appdata

Pointer to the application data in the packet buffer.

This pointer points to the application data when the application is called. If the application wishes to send data, the application may use this space to write the data into before calling uip_send().

Referenced by generate(), generate_file_stats(), handle_incoming_packet(), handle_incoming_rerr(), handle_incoming_rrep(), handle_incoming_rreq(), ip64_arp_create_arp_request(), make_addresses(), make_addrmap(), make_led_toggle(), make_neighbor(), make_neighbor_roomfor(), make_processes(), make_route(), make_routes_roomfor(), make_tcp_stats(), msg_for_me(), newdata(), parse_headers(), parse_msg(), parse_statusline(), PROCESS_THREAD(), PT_THREAD(), send_discover(), send_request(), send_rerr(), send_rrep(), send_rreq(), senddata(), slip_send(), slipdev_send(), uip_arp_out(), uip_fw_forward(), uip_process(), uip_split_output(), websocket_http_client_appcall(), and write_mss_error().

CCIF const uip_ipaddr_t uip_broadcast_addr

Referenced by handle_incoming_rrep(), uip_arp_out(), uip_fw_forward(), and uip_fw_output().

CCIF struct uip_conn* uip_conn

Pointer to the current TCP connection.

The uip_conn pointer can be used to access the current TCP connection.

Referenced by uip_process().

CCIF uip_ipaddr_t uip_draddr

Referenced by uip_arp_out().

CCIF uint8_t uip_flags

Referenced by uip_process().

CCIF uip_ipaddr_t uip_hostaddr

Referenced by create_msg(), handle_incoming_rerr(), handle_incoming_rrep(), handle_incoming_rreq(), PROCESS_THREAD(), time_exceeded(), uip_arp_arpin(), uip_arp_out(), uip_fw_forward(), and uip_over_mesh_init().

CCIF uip_lladdr_t uip_lladdr

Host L2 address.

Referenced by compress_hdr_hc06(), compress_hdr_hc1(), create_llao(), input_callback(), main(), ra_input(), send_packet(), set_global_address(), set_ip_from_prefix(), uip_arp_arpin(), uip_arp_out(), and uip_ds6_init().

CCIF uip_ipaddr_t uip_netmask

struct uip_udp_conn* uip_udp_conn

The current UDP connection.

Referenced by uip_process().

struct uip_udp_conn uip_udp_conns[UIP_UDP_CONNS]

Referenced by eventhandler(), uip_init(), and uip_process().