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/*
* Copyright (C) 2015 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
* You can also choose to distribute this program under the terms of
* the Unmodified Binary Distribution Licence (as given in the file
* COPYING.UBDL), provided that you have satisfied its requirements.
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
/**
* @file
*
* Pooled connections
*
*/
#include <assert.h>
#include <ipxe/pool.h>
/**
* Recycle this connection after closing
*
* @v intf Data transfer interface
*/
void pool_recycle ( struct interface *intf ) {
intf_poke ( intf, pool_recycle );
}
/**
* Reopen a defunct connection
*
* @v intf Data transfer interface
*/
void pool_reopen ( struct interface *intf ) {
intf_poke ( intf, pool_reopen );
}
/**
* Add connection to pool
*
* @v pool Pooled connection
* @v list List of pooled connections
* @v expiry Expiry time
*/
void pool_add ( struct pooled_connection *pool, struct list_head *list,
unsigned long expiry ) {
/* Sanity check */
assert ( list_empty ( &pool->list ) );
assert ( ! timer_running ( &pool->timer ) );
/* Add to list of pooled connections */
list_add_tail ( &pool->list, list );
/* Start expiry timer */
start_timer_fixed ( &pool->timer, expiry );
}
/**
* Remove connection from pool
*
* @v pool Pooled connection
*/
void pool_del ( struct pooled_connection *pool ) {
/* Remove from list of pooled connections */
list_del ( &pool->list );
INIT_LIST_HEAD ( &pool->list );
/* Stop expiry timer */
stop_timer ( &pool->timer );
/* Mark as a freshly recycled connection */
pool->flags = POOL_RECYCLED;
}
/**
* Close expired pooled connection
*
* @v timer Expiry timer
* @v over Failure indicator
*/
void pool_expired ( struct retry_timer *timer, int over __unused ) {
struct pooled_connection *pool =
container_of ( timer, struct pooled_connection, timer );
/* Sanity check */
assert ( ! list_empty ( &pool->list ) );
/* Remove from connection pool */
list_del ( &pool->list );
INIT_LIST_HEAD ( &pool->list );
/* Close expired connection */
pool->expired ( pool );
}
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