/*
* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
* Copyright (c) 2005 Mellanox Technologies. All rights reserved.
* Copyright (c) 2004, 2005 Voltaire, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/delay.h>
#include <linux/moduleparam.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <rdma/ib_cache.h>
#include "ipoib.h"
#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
static int data_debug_level;
module_param(data_debug_level, int, 0644);
MODULE_PARM_DESC(data_debug_level,
"Enable data path debug tracing if > 0");
#endif
struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
struct ib_pd *pd, struct rdma_ah_attr *attr)
{
struct ipoib_ah *ah;
struct ib_ah *vah;
ah = kmalloc(sizeof(*ah), GFP_KERNEL);
if (!ah)
return ERR_PTR(-ENOMEM);
ah->dev = dev;
ah->last_send = 0;
kref_init(&ah->ref);
vah = rdma_create_ah(pd, attr);
if (IS_ERR(vah)) {
kfree(ah);
ah = (struct ipoib_ah *)vah;
} else {
ah->ah = vah;
ipoib_dbg(ipoib_priv(dev), "Created ah %p\n", ah->ah);
}
return ah;
}
void ipoib_free_ah(struct kref *kref)
{
struct ipoib_ah *ah = container_of(kref, struct ipoib_ah, ref);
struct ipoib_dev_priv *priv = ipoib_priv(ah->dev);
unsigned long flags;
spin_lock_irqsave(&priv->lock, flags);
list_add_tail(&ah->list, &priv->