icmp.c File Reference

ICMP module implementation. More...

#include <async.h>
#include <atomic.h>
#include <fibril.h>
#include <fibril_synch.h>
#include <stdint.h>
#include <str.h>
#include <ipc/services.h>
#include <ipc/net.h>
#include <ipc/tl.h>
#include <ipc/icmp.h>
#include <sys/time.h>
#include <sys/types.h>
#include <byteorder.h>
#include <errno.h>
#include <adt/hash_table.h>
#include <net/socket_codes.h>
#include <net/ip_protocols.h>
#include <net/inet.h>
#include <net/modules.h>
#include <net/icmp_api.h>
#include <net/icmp_codes.h>
#include <net/icmp_common.h>
#include <packet_client.h>
#include <packet_remote.h>
#include <net_checksum.h>
#include <icmp_client.h>
#include <icmp_remote.h>
#include <il_remote.h>
#include <ip_client.h>
#include <ip_interface.h>
#include <net_interface.h>
#include <tl_remote.h>
#include <tl_skel.h>
#include <icmp_header.h>

Go to the source code of this file.

Data Structures
struct	icmp_reply_t
	ICMP reply data. More...
Defines
#define	ICMP_CHECKSUM(header, length)   htons(ip_checksum((uint8_t *) (header), (length)))
	Compute the ICMP datagram checksum.
#define	ICMP_ECHO_TEXT   "ICMP hello from HelenOS."
	An echo request datagrams pattern.
#define	ICMP_KEEP_LENGTH   8
	Original datagram length in bytes transfered to the error notification message.
#define	NAME   "icmp"
	ICMP module name.
#define	REPLY_BUCKETS   1024
	Number of replies hash table buckets.
#define	REPLY_KEYS   2
	Number of replies hash table keys.
Functions
static int	icmp_destination_unreachable (icmp_code_t code, icmp_param_t mtu, packet_t *packet)
static int	icmp_echo (icmp_param_t id, icmp_param_t sequence, size_t size, mseconds_t timeout, ip_ttl_t ttl, ip_tos_t tos, bool dont_fragment, const struct sockaddr *addr, socklen_t addrlen)
	Request an echo message.
static int	icmp_parameter_problem (icmp_code_t code, icmp_param_t pointer, packet_t *packet)
static icmp_header_t *	icmp_prepare_packet (packet_t *packet)
	Prepare the ICMP error packet.
static void	icmp_process_echo_reply (packet_t *packet, icmp_header_t *header, icmp_type_t type, icmp_code_t code)
	Try to set the pending reply result as the received message type.
static int	icmp_process_packet (packet_t *packet, services_t error)
	Process the received ICMP packet.
static void	icmp_receiver (ipc_callid_t iid, ipc_call_t *icall)
	Process IPC messages from the IP module.
static void	icmp_release (packet_t *packet)
	Release the packet and return the result.
static int	icmp_send_packet (icmp_type_t type, icmp_code_t code, packet_t *packet, icmp_header_t *header, services_t error, ip_ttl_t ttl, ip_tos_t tos, bool dont_fragment)
	Send the ICMP message.
static int	icmp_source_quench (packet_t *packet)
static int	icmp_time_exceeded (icmp_code_t code, packet_t *packet)
int	main (int argc, char *argv[])
	Main entry point.
static int	replies_compare (unsigned long key[], hash_count_t keys, link_t *item)
static hash_index_t	replies_hash (unsigned long key[])
static void	replies_remove_callback (link_t *item)
void	tl_connection (void)
	Per-connection module initialization.
int	tl_initialize (int net_phone)
	Module initialization.
int	tl_message (ipc_callid_t callid, ipc_call_t *call, ipc_call_t *answer, size_t *count)
	Process the transport layer module message.
Variables
static bool	echo_replying = true
static bool	error_reporting = true
static atomic_t	icmp_client
	ICMP client identification counter.
static packet_dimension_t	icmp_dimension
static fibril_local icmp_param_t	icmp_id
	ICMP identifier and sequence number (client-specific).
static fibril_local icmp_param_t	icmp_seq
static int	phone_ip = -1
static int	phone_net = -1
	Global data.
static hash_table_t	replies
static fibril_mutex_t	reply_lock
	Reply hash table.
static hash_table_operations_t	reply_ops

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Detailed Description

ICMP module implementation.

Definition in file icmp.c.

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