Network support. More...

#include <sys/cdefs.h>
#include <arch/types.h>
#include <sys/queue.h>
#include <netinet/in.h>

Data Structures
struct	knetif
	Structure describing one usable network device. More...
struct	ip_hdr_s
	IPv4 Packet header. More...
struct	ipv6_hdr_s
	IPv6 Packet header. More...
struct	net_ipv4_stats
	IPv4 statistics structure. More...
struct	net_ipv6_stats
	IPv6 statistics structure. More...
struct	net_udp_stats
	UDP statistics structure. More...

Macros
#define	NETIF_NO_FLAGS 0x00000000
	No flags set.
#define	NETIF_REGISTERED 0x00000001
	Is it registered?
#define	NETIF_DETECTED 0x00000002
	Is it detected?
#define	NETIF_INITIALIZED 0x00000004
	Has it been initialized?
#define	NETIF_RUNNING 0x00000008
	Has start() been called?
#define	NETIF_PROMISC 0x00010000
	Promiscuous mode.
#define	NETIF_NEEDSPOLL 0x01000000
	Needs to be polled for input.
#define	NETIF_TX_OK 0
	Tx success.
#define	NETIF_TX_ERROR -1
	Tx general error.
#define	NETIF_TX_AGAIN -2
	Retry Tx later.
#define	NETIF_NOBLOCK 0
	Don't block for Tx.
#define	NETIF_BLOCK 1
	Blocking is OK for Tx.
#define	ICMP_PROTOCOL_UNREACHABLE 2
	Protocol unreachable.
#define	ICMP_PORT_UNREACHABLE 3
	Port unreachable.
#define	ICMP_REASSEMBLY_TIME_EXCEEDED 1
	Reassembly time gone.
#define	ICMP6_DEST_UNREACH_NO_ROUTE 0
	No route available.
#define	ICMP6_DEST_UNREACH_PROHIBITED 1
	Access prohibited.
#define	ICMP6_DEST_UNREACH_BEYOND_SCOPE 2
	Gone beyond scope.
#define	ICMP6_DEST_UNREACH_ADDR_UNREACH 3
	Address unreachable.
#define	ICMP6_DEST_UNREACH_PORT_UNREACH 4
	Port unreachable.
#define	ICMP6_DEST_UNREACH_FAIL_EGRESS 5
	Egress failure.
#define	ICMP6_DEST_UNREACH_BAD_ROUTE 6
	Bad route specified.
#define	ICMP6_TIME_EXCEEDED_HOPS_EXC 0
	Hops exceeded.
#define	ICMP6_TIME_EXCEEDED_FRAGMENT 1
	Reassembly time gone.
#define	ICMP6_PARAM_PROB_BAD_HEADER 0
	Malformed header.
#define	ICMP6_PARAM_PROB_UNK_HEADER 1
	Unknown header.
#define	ICMP6_PARAM_PROB_UNK_OPTION 2
	Unknown header option.

Typedefs
typedef struct knetif	netif_t
	Structure describing one usable network device.
typedef struct ip_hdr_s	ip_hdr_t
	IPv4 Packet header.
typedef struct ipv6_hdr_s	ipv6_hdr_t
	IPv6 Packet header.
typedef int(*	net_input_func )(netif_t nif, const uint8 pkt, int len)
	Network input callback type.
typedef void(*	net_echo_cb )(const uint8 ip, uint16 seq, uint64 delta_us, uint8 ttl, const uint8 data, int len)
	ICMPv4 echo reply callback type.
typedef struct net_ipv4_stats	net_ipv4_stats_t
	IPv4 statistics structure.
typedef void(*	net6_echo_cb )(const struct in6_addr ip, uint16 seq, uint64 delta_us, uint8 hlim, const uint8 data, int len)
	ICMPv6 echo reply callback type.
typedef struct net_ipv6_stats	net_ipv6_stats_t
	IPv6 statistics structure.
typedef struct net_udp_stats	net_udp_stats_t
	UDP statistics structure.

Functions
int	net_arp_init ()
	Init ARP.
void	net_arp_shutdown ()
	Shutdown ARP.
int	net_arp_gc ()
	Garbage collect timed out ARP entries.
int	net_arp_insert (netif_t *nif, const uint8 mac[6], const uint8 ip[4], uint32 timestamp)
	Add an entry to the ARP cache manually.
int	net_arp_lookup (netif_t nif, const uint8 ip_in[4], uint8 mac_out[6], const ip_hdr_t pkt, const uint8 *data, int data_size)
	Look up an entry from the ARP cache.
int	net_arp_revlookup (netif_t *nif, uint8 ip_out[4], const uint8 mac_in[6])
	Do a reverse ARP lookup.
int	net_arp_input (netif_t nif, const uint8 pkt, int len)
	Receive an ARP packet and process it (called by net_input).
int	net_arp_query (netif_t *nif, const uint8 ip[4])
	Generate an ARP who-has query on the given device.
int	net_input (netif_t device, const uint8 data, int len)
	Device drivers should call this function to submit packets received in the background.
net_input_func	net_input_set_target (net_input_func t)
	Setup a network input target.
int	net_icmp_send_echo (netif_t net, const uint8 ipaddr[4], uint16 ident, uint16 seq, const uint8 data, int size)
	Send an ICMP Echo packet to the specified IP.
int	net_icmp_send_dest_unreach (netif_t net, uint8 code, const uint8 msg)
	Send an ICMP Destination Unreachable packet in reply to the given message.
int	net_icmp_send_time_exceeded (netif_t net, uint8 code, const uint8 msg)
	Send an ICMP Time Exceeded packet in reply to the given message.
net_ipv4_stats_t	net_ipv4_get_stats ()
	Retrieve statistics from the IPv4 layer.
uint32	net_ipv4_address (const uint8 addr[4])
	Create a 32-bit IP address, based on the individual numbers contained within the IP.
void	net_ipv4_parse_address (uint32 addr, uint8 out[4])
	Parse an IP address that is packet into a uint32 into an array of the individual bytes.
int	net_icmp6_send_echo (netif_t net, const struct in6_addr dst, uint16 ident, uint16 seq, const uint8 *data, int size)
	Send an ICMPv6 Echo (PING6) packet to the specified device.
int	net_icmp6_send_nsol (netif_t net, const struct in6_addr dst, const struct in6_addr *target, int dupdet)
	Send a Neighbor Solicitation packet on the specified device.
int	net_icmp6_send_nadv (netif_t net, const struct in6_addr dst, const struct in6_addr *target, int sol)
	Send a Neighbor Advertisement packet on the specified device.
int	net_icmp6_send_rsol (netif_t *net)
	Send a Router Solicitation request on the specified interface.
int	net_icmp6_send_dest_unreach (netif_t net, uint8 code, const uint8 ppkt, int psz)
	Send a destination unreachable packet on the specified interface.
int	net_icmp6_send_time_exceeded (netif_t net, uint8 code, const uint8 ppkt, int psz)
	Send a time exceeded message on the specified interface.
int	net_icmp6_send_param_prob (netif_t net, uint8 code, uint32 ptr, const uint8 ppkt, int psz)
	Send an ICMPv6 Parameter Problem about the given packet.
net_ipv6_stats_t	net_ipv6_get_stats ()
	Retrieve statistics from the IPv6 layer.
int	net_ndp_init ()
	Init NDP.
void	net_ndp_shutdown ()
	Shutdown NDP.
void	net_ndp_gc ()
	Garbage collect timed out NDP entries. This will be called periodically as NDP queries come in.
int	net_ndp_insert (netif_t nif, const uint8 mac[6], const struct in6_addr ip, int unsol)
	Add an entry to the NDP cache.
int	net_ndp_lookup (netif_t net, const struct in6_addr ip, uint8 mac_out[6], const ipv6_hdr_t pkt, const uint8 data, int data_size)
	Look up an entry from the NDP cache.
net_udp_stats_t	net_udp_get_stats ()
	Retrieve statistics from the UDP layer.
int	net_udp_init ()
	Init UDP.
void	net_udp_shutdown ()
	Shutdown UDP.
int	net_tcp_init ()
	Init TCP.
void	net_tcp_shutdown ()
	Shutdown TCP.
uint32	net_crc32le (const uint8 *data, int size)
	Calculate a "little-endian" CRC-32 over a block of data.
uint32	net_crc32be (const uint8 *data, int size)
	Calculate a "big-endian" CRC-32 over a block of data.
uint16	net_crc16ccitt (const uint8 *data, int size, uint16 start)
	Calculate a CRC16-CCITT over a block of data.
int	net_multicast_add (const uint8 mac[6])
	Add a entry to our multicast list.
int	net_multicast_del (const uint8 mac[6])
	Delete a entry from our multicast list.
int	net_multicast_check (const uint8 mac[6])
	Check if an address is on the multicast list.
int	net_multicast_init ()
	Init multicast support.
void	net_multicast_shutdown ()
	Shutdown multicast support.
struct netif_list *	net_get_if_list ()
	Function to retrieve the interface list.
netif_t *	net_set_default (netif_t *n)
	Set our default device to an arbitrary device.
int	net_reg_device (netif_t *device)
	Register a network device.
int	net_unreg_device (netif_t *device)
	Unregister a network device.
int	net_init ()
	Init network support.
void	net_shutdown ()
	Shutdown network support.

Variables
net_input_func	net_input_target
	Where will input packets be routed?
net_echo_cb	net_icmp_echo_cb
	Where will we handle possibly notifying the user of ping replies?
net6_echo_cb	net_icmp6_echo_cb
	Where will we handle possibly notifying the user of ping replies?
struct netif_list	net_if_list
	Interface list; note: do not manipulate directly!
netif_t *	net_default_dev
	The default network device, used with sockets (read-only).

Detailed Description

Network support.

This file contains declarations related to networking support. KOS' built-in network stack supports UDP over IPv4, and to some degree has some basic IPv6 support as well. This will change over time, hopefully leaving us with full TCP and UDP support both over IPv4 and IPv6.

Author:: Lawrence Sebald; Dan Potter

Macro Definition Documentation

#define ICMP6_DEST_UNREACH_ADDR_UNREACH 3

Address unreachable.

#define ICMP6_DEST_UNREACH_BAD_ROUTE 6

Bad route specified.

#define ICMP6_DEST_UNREACH_BEYOND_SCOPE 2

Gone beyond scope.

#define ICMP6_DEST_UNREACH_FAIL_EGRESS 5

Egress failure.

#define ICMP6_DEST_UNREACH_NO_ROUTE 0

No route available.

#define ICMP6_DEST_UNREACH_PORT_UNREACH 4

Port unreachable.

#define ICMP6_DEST_UNREACH_PROHIBITED 1

Access prohibited.

#define ICMP6_PARAM_PROB_BAD_HEADER 0

Malformed header.

#define ICMP6_PARAM_PROB_UNK_HEADER 1

Unknown header.

#define ICMP6_PARAM_PROB_UNK_OPTION 2

Unknown header option.

#define ICMP6_TIME_EXCEEDED_FRAGMENT 1

Reassembly time gone.

#define ICMP6_TIME_EXCEEDED_HOPS_EXC 0

Hops exceeded.

#define ICMP_PORT_UNREACHABLE 3

Port unreachable.

#define ICMP_PROTOCOL_UNREACHABLE 2

Protocol unreachable.

#define ICMP_REASSEMBLY_TIME_EXCEEDED 1

Reassembly time gone.

#define NETIF_BLOCK 1

Blocking is OK for Tx.

#define NETIF_NOBLOCK 0

Don't block for Tx.

#define NETIF_TX_AGAIN -2

Retry Tx later.

#define NETIF_TX_ERROR -1

Tx general error.

#define NETIF_TX_OK 0

Tx success.

Typedef Documentation

typedef struct ip_hdr_s ip_hdr_t

IPv4 Packet header.

typedef struct ipv6_hdr_s ipv6_hdr_t

IPv6 Packet header.

typedef void(* net6_echo_cb)(const struct in6_addr *ip, uint16 seq, uint64 delta_us, uint8 hlim, const uint8 *data, int len)

ICMPv6 echo reply callback type.

Parameters:

ip	The IPv6 address the reply is from.
seq	The sequence number of the packet.
delta_us	The time difference, in microseconds.
hlim	The hop limit value in the packet.
data	Any data in the packet.
len	The length of the data, in bytes.

typedef void(* net_echo_cb)(const uint8 *ip, uint16 seq, uint64 delta_us, uint8 ttl, const uint8 *data, int len)

ICMPv4 echo reply callback type.

Parameters:

ip	The IPv4 address the reply is from.
seq	The sequence number of the packet.
delta_us	The time difference, in microseconds.
ttl	The TTL value in the packet.
data	Any data in the packet.
len	The length of the data, in bytes.

typedef int(* net_input_func)(netif_t *nif, const uint8 *pkt, int len)

Network input callback type.

Parameters:

nif	The network device in use.
pkt	The packet received.
len	The length of the packet, in bytes.

Returns:: 0 on success, <0 on failure.

typedef struct net_ipv4_stats net_ipv4_stats_t

IPv4 statistics structure.

This structure holds some basic statistics about the IPv4 layer of the stack, and can be retrieved with the appropriate function.

typedef struct net_ipv6_stats net_ipv6_stats_t

IPv6 statistics structure.

This structure holds some basic statistics about the IPv6 layer of the stack, and can be retrieved with the appropriate function.

typedef struct net_udp_stats net_udp_stats_t

UDP statistics structure.

This structure holds some basic statistics about the UDP layer of the stack, and can be retrieved with the appropriate function.

typedef struct knetif netif_t

Structure describing one usable network device.

Each usable network device should have one of these describing it. These must be registered to the network layer before the device is useable.

Function Documentation

int net_arp_gc ( )

Garbage collect timed out ARP entries.

This will be done periodically as ARP lookups are requested.

Return values:

0	On success (no error conditions defined).

int net_arp_init ( )

Init ARP.

Return values:

0	On success (no error conditions defined).

int net_arp_input	(	netif_t *	nif,
		const uint8 *	pkt,
		int	len
	)

Receive an ARP packet and process it (called by net_input).

Parameters:

nif	The network device in use.
pkt	The packet received.
len	The length of the packet.

Return values:

0	On success (no error conditions defined).

int net_arp_insert	(	netif_t *	nif,
		const uint8	mac[6],
		const uint8	ip[4],
		uint32	timestamp
	)

Add an entry to the ARP cache manually.

Parameters:

nif	The network device in use.
mac	The MAC address of the entry.
ip	The IPv4 address of the entry.
timestamp	The entry's timestamp. Set to 0 for a permanent entry, otherwise set to jiffies.

Return values:

0	On success (no error conditions defined).

int net_arp_lookup	(	netif_t *	nif,
		const uint8	ip_in[4],
		uint8	mac_out[6],
		const ip_hdr_t *	pkt,
		const uint8 *	data,
		int	data_size
	)

Look up an entry from the ARP cache.

If no entry is found, then an ARP query will be sent and an error will be returned. If you specify a packet with the call, it will be sent when the reply comes in.

Parameters:

nif	The network device in use.
ip_in	The IP address to lookup.
mac_out	Storage for the MAC address, if found.
pkt	A simple IPv4 header, if you want to send one when a response comes in (if not found immediately).
data	Packet data to go with the header.
data_size	The size of data.

Return values:

0	On success.
-1	A query is outstanding for that address.
-2	Address not found, query generated.

int net_arp_query	(	netif_t *	nif,
		const uint8	ip[4]
	)

Generate an ARP who-has query on the given device.

Parameters:

nif	The network device to use.
ip	The IP to query.

Return values:

0	On success (no error conditions defined).

int net_arp_revlookup	(	netif_t *	nif,
		uint8	ip_out[4],
		const uint8	mac_in[6]
	)

Do a reverse ARP lookup.

This function looks for an IP for a given mac address; note that if this fails, you have no recourse.

Parameters:

nif	The network device in use.
ip_out	Storage for the IPv4 address.
mac_in	The MAC address to look up.

Return values:

0	On success.
-1	On failure.

void net_arp_shutdown ( )

Shutdown ARP.

uint16 net_crc16ccitt	(	const uint8 *	data,
		int	size,
		uint16	start
	)

Calculate a CRC16-CCITT over a block of data.

Parameters:

data	The data to calculate over.
size	The size of the data, in bytes.
start	The value to start with. This could be a previous return value from this function (if continuing a previous calculation) or some initial seed value (typically 0xFFFF or 0x0000).

Returns:: The calculated CRC16-CCITT.

Note:: Based on code found online at http://www.ccsinfo.com/forum/viewtopic.php?t=24977

uint32 net_crc32be	(	const uint8 *	data,
		int	size
	)

Calculate a "big-endian" CRC-32 over a block of data.

Parameters:

data	The data to calculate over.
size	The size of the data, in bytes.

Returns:: The calculated CRC-32.

uint32 net_crc32le	(	const uint8 *	data,
		int	size
	)

Calculate a "little-endian" CRC-32 over a block of data.

Parameters:

data	The data to calculate over.
size	The size of the data, in bytes.

Returns:: The calculated CRC-32.

struct netif_list* net_get_if_list ( )

read

Function to retrieve the interface list.

Do not manipulate what this returns to you!

Returns:: The network interface list.

int net_icmp6_send_dest_unreach	(	netif_t *	net,
		uint8	code,
		const uint8 *	ppkt,
		int	psz
	)

Send a destination unreachable packet on the specified interface.

Parameters:

net	The network device to use.
code	The type of message this is.
ppkt	The message that caused this error.
psz	Size of the original message.

Returns:: 0 on success, <0 on failure.

int net_icmp6_send_echo	(	netif_t *	net,
		const struct in6_addr *	dst,
		uint16	ident,
		uint16	seq,
		const uint8 *	data,
		int	size
	)

Send an ICMPv6 Echo (PING6) packet to the specified device.

Parameters:

net	The network device to use.
dst	The address to send to.
ident	A packet identifier.
seq	A packet sequence number.
data	Data to send with the packet.
size	Length of the data, in bytes.

Returns:: 0 on success, <0 on failure.

int net_icmp6_send_nadv	(	netif_t *	net,
		const struct in6_addr *	dst,
		const struct in6_addr *	target,
		int	sol
	)

Send a Neighbor Advertisement packet on the specified device.

Parameters:

net	The network device to use.
dst	The destination address.
target	The target address.
sol	1 if solicited, 0 otherwise.

Returns:: 0 on success, <0 on failure.

int net_icmp6_send_nsol	(	netif_t *	net,
		const struct in6_addr *	dst,
		const struct in6_addr *	target,
		int	dupdet
	)

Send a Neighbor Solicitation packet on the specified device.

Parameters:

net	The network device to use.
dst	The destination address.
target	The target address.
dupdet	1 if this is for duplicate detection.

Returns:: 0 on success, <0 on failure.

int net_icmp6_send_param_prob	(	netif_t *	net,
		uint8	code,
		uint32	ptr,
		const uint8 *	ppkt,
		int	psz
	)

Send an ICMPv6 Parameter Problem about the given packet.

Parameters:

net	The network device to use.
code	The error code.
ptr	Where in the packet is the error?
ppkt	The message that caused the error.
psz	Size of the original packet.

Returns:: 0 on success, <0 on failure.

int net_icmp6_send_rsol ( netif_t * net )

Send a Router Solicitation request on the specified interface.

Parameters:

net	The network device to use.

Returns:: 0 on success, <0 on failure.

int net_icmp6_send_time_exceeded	(	netif_t *	net,
		uint8	code,
		const uint8 *	ppkt,
		int	psz
	)

Send a time exceeded message on the specified interface.

Parameters:

net	The network device to use.
code	The error code.
ppkt	The message that caused this error.
psz	Size of the original packet.

Returns:: 0 on success, <0 on failure.

int net_icmp_send_dest_unreach	(	netif_t *	net,
		uint8	code,
		const uint8 *	msg
	)

Send an ICMP Destination Unreachable packet in reply to the given message.

Parameters:

net	The network device to use.
code	The type of message this is.
msg	The message that caused this error.

Returns:: 0 on success, <0 on failure.

int net_icmp_send_echo	(	netif_t *	net,
		const uint8	ipaddr[4],
		uint16	ident,
		uint16	seq,
		const uint8 *	data,
		int	size
	)

Send an ICMP Echo packet to the specified IP.

Parameters:

net	The network device to use.
ipaddr	The IPv4 address to send to.
ident	A packet identifier.
seq	A packet sequence number.
data	Data to send with the packet.
size	The size of the data to send.

Returns:: 0 on success, <0 on failure.

int net_icmp_send_time_exceeded	(	netif_t *	net,
		uint8	code,
		const uint8 *	msg
	)

Send an ICMP Time Exceeded packet in reply to the given message.

Parameters:

net	The network device to use.
code	The type of message this is.
msg	The message that caused this error.

Returns:: 0 on success, <0 on failure.

int net_init ( )

Init network support.

Returns:: 0 on success, <0 on failure.

int net_input	(	netif_t *	device,
		const uint8 *	data,
		int	len
	)

Device drivers should call this function to submit packets received in the background.

This function may or may not return immidiately but it won't take an infinitely long time (so it's safe to call inside interrupt handlers).

Parameters:

device	The network device submitting packets.
data	The packet to submit.
len	The length of the packet, in bytes.

Returns:: 0 on success, <0 on failure.

net_input_func net_input_set_target ( net_input_func t )

Setup a network input target.

Parameters:

t	The new target callback.

Returns:: The old target.

uint32 net_ipv4_address ( const uint8 addr[4] )

Create a 32-bit IP address, based on the individual numbers contained within the IP.

Parameters:

addr	Array of IP address octets.

Returns:: The address, in host byte order.

net_ipv4_stats_t net_ipv4_get_stats ( )

Retrieve statistics from the IPv4 layer.

Returns:: The net_ipv4_stats_t structure.

void net_ipv4_parse_address	(	uint32	addr,
		uint8	out[4]
	)

Parse an IP address that is packet into a uint32 into an array of the individual bytes.

Parameters:

addr	The full address, in host byte order.
out	The output buffer.

net_ipv6_stats_t net_ipv6_get_stats ( )

Retrieve statistics from the IPv6 layer.

Returns:: The global IPv6 stats structure.

int net_multicast_add ( const uint8 mac[6] )

Add a entry to our multicast list.

This function will auto-commit the multicast list to the network interface in the process.

Parameters:

mac	The MAC address to add.

Returns:: 0 on success, <0 on failure.

int net_multicast_check ( const uint8 mac[6] )

Check if an address is on the multicast list.

Parameters:

mac	The MAC address to check for.

Return values:

0	The address is not in the list.
1	The address is in the list.
-1	On error.

int net_multicast_del ( const uint8 mac[6] )

Delete a entry from our multicast list.

This function will auto-commit the multicast list to the network interface in the process.

Parameters:

mac	The MAC address to add.

Returns:: 0 on success, <0 on failure.

int net_multicast_init ( )

Init multicast support.

Returns:: 0 on success, !0 on error.

void net_multicast_shutdown ( )

Shutdown multicast support.

void net_ndp_gc ( )

Garbage collect timed out NDP entries. This will be called periodically as NDP queries come in.

int net_ndp_init ( )

Init NDP.

Return values:

0	On success (no error conditions defined).

int net_ndp_insert	(	netif_t *	nif,
		const uint8	mac[6],
		const struct in6_addr *	ip,
		int	unsol
	)

Add an entry to the NDP cache.

Parameters:

nif	The network device in question.
mac	The MAC address for the entry.
ip	The IPv6 address for the entry.
unsol	Was this unsolicited?

Returns:: 0 on success, <0 on failure.

int net_ndp_lookup	(	netif_t *	net,
		const struct in6_addr *	ip,
		uint8	mac_out[6],
		const ipv6_hdr_t *	pkt,
		const uint8 *	data,
		int	data_size
	)

Look up an entry from the NDP cache.

If no entry is found, then an NDP query will be sent and an error will be returned. If you specify a packet with the call, it will be sent when the reply comes in.

Parameters:

net	The network device to use.
ip	The IPv6 address to query.
mac_out	Storage for the MAC address on success.
pkt	A simple IPv6 header, if you want to send a packet when a reply comes in.
data	Anything that comes after the header.
data_size	The size of data.

Returns:: 0 on success, <0 on failure.

void net_ndp_shutdown ( )

Shutdown NDP.

int net_reg_device ( netif_t * device )

Register a network device.

Parameters:

device The device to register.

Returns:: 0 on success, <0 on failure.

netif_t* net_set_default ( netif_t * n )

Set our default device to an arbitrary device.

Parameters:

n	The device to set as default.

Returns:: The old default device.

void net_shutdown ( )

Shutdown network support.

int net_tcp_init ( )

Init TCP.

Return values:

0	On success (no error conditions defined).

void net_tcp_shutdown ( )

Shutdown TCP.

net_udp_stats_t net_udp_get_stats ( )

Retrieve statistics from the UDP layer.

Returns:: The global UDP stats struct.

int net_udp_init ( )

Init UDP.

Return values:

0	On success (no error conditions defined).

void net_udp_shutdown ( )

Shutdown UDP.

int net_unreg_device ( netif_t * device )

Unregister a network device.

Parameters:

device The device to unregister.

Returns:: 0 on success, <0 on failure.

Variable Documentation

netif_t* net_default_dev

The default network device, used with sockets (read-only).

net6_echo_cb net_icmp6_echo_cb

Where will we handle possibly notifying the user of ping replies?

net_echo_cb net_icmp_echo_cb

Where will we handle possibly notifying the user of ping replies?

struct netif_list net_if_list

Interface list; note: do not manipulate directly!

net_input_func net_input_target

Where will input packets be routed?

Data Structures

Macros

Typedefs

Functions

Variables

Detailed Description

Macro Definition Documentation

Typedef Documentation

Function Documentation

Variable Documentation