These changes are the raw update to qemu-2.6.

[kvmfornfv.git] / qemu / roms / ipxe / src / core / pool.c

diff --git a/qemu/roms/ipxe/src/core/pool.c b/qemu/roms/ipxe/src/core/pool.c
new file mode 100644 (file)
index 0000000..0163405
--- /dev/null
+++ b/qemu/roms/ipxe/src/core/pool.c
@@ -0,0 +1,114 @@
+/*
+ * 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 );
+}