packet.c File Reference

Packet map and queue implementation. More...

#include <malloc.h>
#include <mem.h>
#include <fibril_synch.h>
#include <unistd.h>
#include <errno.h>
#include <sys/mman.h>
#include <adt/generic_field.h>
#include <net/packet.h>
#include <net/packet_header.h>

Go to the source code of this file.

Packet management system interface
int	pm_add (packet_t *packet)
	Adds the packet mapping.
void	pm_destroy (void)
	Releases the packet map.
packet_t *	pm_find (packet_id_t packet_id)
	Finds the packet mapping.
int	pm_init (void)
	Initializes the packet map.
int	pq_add (packet_t **first, packet_t *packet, size_t order, size_t metric)
	Add packet to the sorted queue.
packet_t *	pq_detach (packet_t *packet)
	Detach the packet from the queue.
packet_t *	pq_find (packet_t *packet, size_t order)
	Finds the packet with the given order.
int	pq_get_order (packet_t *packet, size_t *order, size_t *metric)
	Sets the packet order and metric attributes.
int	pq_insert_after (packet_t *packet, packet_t *new_packet)
	Inserts packet after the given one.
packet_t *	pq_next (packet_t *packet)
	Returns the next packet in the queue.
packet_t *	pq_previous (packet_t *packet)
	Returns the previous packet in the queue.
int	pq_set_order (packet_t *packet, size_t order, size_t metric)
	Sets the packet order and metric attributes.
Defines
#define	PACKET_MAP_INDEX(packet_id)   (((packet_id) - 1) % PACKET_MAP_SIZE)
	Returns the packet index in the corresponding packet map page.
#define	PACKET_MAP_PAGE(packet_id)   (((packet_id) - 1) / PACKET_MAP_SIZE)
	Returns the packet map page index.
#define	PACKET_MAP_SIZE   100
	Packet map page size.
Typedefs
typedef packet_t *	packet_map_t [PACKET_MAP_SIZE]
	Type definition of the packet map page.
Functions
	GENERIC_FIELD_DECLARE (gpm, packet_map_t)
	Packet map.
void	pq_destroy (packet_t *first, void(*packet_release)(packet_t *packet))
	Releases the whole queue.
Variables
struct {
fibril_rwlock_t   lock
	Safety lock.
gpm_t   packet_map
	Packet map.
}	pm_globals
	Packet map global data.

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Detailed Description

Packet map and queue implementation.

This file has to be compiled with both the packet server and the client.

Definition in file packet.c.

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