eth.c File Reference

Ethernet module implementation. More...

#include <async.h>
#include <malloc.h>
#include <mem.h>
#include <stdio.h>
#include <string.h>
#include <ipc/ipc.h>
#include <ipc/services.h>
#include "../../err.h"
#include "../../messages.h"
#include "../../modules.h"
#include "../../include/byteorder.h"
#include "../../include/checksum.h"
#include "../../include/ethernet_lsap.h"
#include "../../include/ethernet_protocols.h"
#include "../../include/protocol_map.h"
#include "../../include/device.h"
#include "../../include/netif_interface.h"
#include "../../include/net_interface.h"
#include "../../include/nil_interface.h"
#include "../../include/il_interface.h"
#include "../../structures/measured_strings.h"
#include "../../structures/packet/packet_client.h"
#include "../nil_module.h"
#include "eth.h"
#include "eth_header.h"

Include dependency graph for eth.c:

Defines
#define	ETH_PREFIX   (sizeof(eth_header_t) + sizeof(eth_header_lsap_t) + sizeof(eth_header_snap_t))
	Reserved packet prefix length.
#define	ETH_SUFFIX   sizeof(eth_fcs_t)
	Reserved packet suffix length.
#define	ETH_MAX_CONTENT   1500u
	Maximum packet content length.
#define	ETH_MIN_CONTENT   46u
	Minimum packet content length.
#define	ETH_MAX_TAGGED_CONTENT(flags)   (ETH_MAX_CONTENT - ((IS_8023_2_LSAP(flags) || IS_8023_2_SNAP(flags)) ? sizeof(eth_header_lsap_t) : 0) - (IS_8023_2_SNAP(flags) ? sizeof(eth_header_snap_t) : 0))
	Maximum tagged packet content length.
#define	ETH_MIN_TAGGED_CONTENT(flags)   (ETH_MIN_CONTENT - ((IS_8023_2_LSAP(flags) || IS_8023_2_SNAP(flags)) ? sizeof(eth_header_lsap_t) : 0) - (IS_8023_2_SNAP(flags) ? sizeof(eth_header_snap_t) : 0))
	Minimum tagged packet content length.
#define	ETH_DUMMY_SHIFT   0
	Dummy flag shift value.
#define	ETH_MODE_SHIFT   1
	Mode flag shift value.
#define	ETH_DUMMY   (1 << ETH_DUMMY_SHIFT)
	Dummy device flag.
#define	IS_DUMMY(flags)   ((flags) &ETH_DUMMY)
	Returns the dummy flag.
#define	ETH_MODE_MASK   (3 << ETH_MODE_SHIFT)
	Device mode flags.
#define	ETH_DIX   (1 << ETH_MODE_SHIFT)
	DIX Ethernet mode flag.
#define	IS_DIX(flags)   (((flags) &ETH_MODE_MASK) == ETH_DIX)
	Returns whether the DIX Ethernet mode flag is set.
#define	ETH_8023_2_LSAP   (2 << ETH_MODE_SHIFT)
	802.3 + 802.2 + LSAP mode flag.
#define	IS_8023_2_LSAP(flags)   (((flags) &ETH_MODE_MASK) == ETH_8023_2_LSAP)
	Returns whether the 802.3 + 802.2 + LSAP mode flag is set.
#define	ETH_8023_2_SNAP   (3 << ETH_MODE_SHIFT)
	802.3 + 802.2 + LSAP + SNAP mode flag.
#define	IS_8023_2_SNAP(flags)   (((flags) &ETH_MODE_MASK) == ETH_8023_2_SNAP)
	Returns whether the 802.3 + 802.2 + LSAP + SNAP mode flag is set.
Typedefs
typedef enum eth_addr_type	eth_addr_type_t
	Type definition of the ethernet address type.
typedef eth_addr_type_t *	eth_addr_type_ref
	Type definition of the ethernet address type pointer.
Enumerations
enum	eth_addr_type { ETH_LOCAL_ADDR, ETH_BROADCAST_ADDR }
	Ethernet address type. More...
Functions
eth_proto_ref	eth_process_packet (int flags, packet_t packet)
	Processes the received packet and chooses the target registered module.
int	eth_prepare_packet (int flags, packet_t packet, uint8_t *src_addr, int ethertype, size_t mtu)
	Prepares the packet for sending.
int	nil_device_state_msg (int nil_phone, device_id_t device_id, int state)
int	nil_initialize (int net_phone)
	Module initialization.
int	nil_received_msg (int nil_phone, device_id_t device_id, packet_t packet, services_t target)
int	nil_message (ipc_callid_t callid, ipc_call_t *call, ipc_call_t *answer, int *answer_count)
	Message processing function.
Message processing functions
void	eth_receiver (ipc_callid_t iid, ipc_call_t *icall)
	Processes IPC messages from the registered device driver modules in an infinite loop.
int	eth_device_message (device_id_t device_id, services_t service, size_t mtu)
	Registers new device or updates the MTU of an existing one.
int	eth_register_message (services_t service, int phone)
	Registers receiving module service.
int	eth_packet_space_message (device_id_t device_id, size_t *addr_len, size_t *prefix, size_t *content, size_t *suffix)
	Returns the device packet dimensions for sending.
int	eth_addr_message (device_id_t device_id, eth_addr_type_t type, measured_string_ref *address)
	Returns the device hardware address.
int	eth_send_message (device_id_t device_id, packet_t packet, services_t sender)
	Sends the packet queue.
Variables
eth_globals_t	eth_globals
	Ethernet module global data.

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Detailed Description

Ethernet module implementation.

See also:

eth.h