You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
219 lines
6.3 KiB
219 lines
6.3 KiB
/*
|
|
* Copyright (c) 2004, 2005 Mellanox Technologies Ltd. All rights reserved.
|
|
* Copyright (c) 2004, 2005 Infinicon Corporation. All rights reserved.
|
|
* Copyright (c) 2004, 2005 Intel Corporation. All rights reserved.
|
|
* Copyright (c) 2004, 2005 Topspin Corporation. All rights reserved.
|
|
* Copyright (c) 2004, 2005 Voltaire Corporation. All rights reserved.
|
|
* Copyright (c) 2005 Sun Microsystems, 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.
|
|
*
|
|
* $Id: agent.c 1389 2004-12-27 22:56:47Z roland $
|
|
*/
|
|
|
|
#include "agent.h"
|
|
#include "smi.h"
|
|
|
|
#define SPFX "ib_agent: "
|
|
|
|
struct ib_agent_port_private {
|
|
struct list_head port_list;
|
|
struct ib_mad_agent *agent[2];
|
|
};
|
|
|
|
static DEFINE_SPINLOCK(ib_agent_port_list_lock);
|
|
static LIST_HEAD(ib_agent_port_list);
|
|
|
|
static struct ib_agent_port_private *
|
|
__ib_get_agent_port(struct ib_device *device, int port_num)
|
|
{
|
|
struct ib_agent_port_private *entry;
|
|
|
|
list_for_each_entry(entry, &ib_agent_port_list, port_list) {
|
|
if (entry->agent[0]->device == device &&
|
|
entry->agent[0]->port_num == port_num)
|
|
return entry;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static struct ib_agent_port_private *
|
|
ib_get_agent_port(struct ib_device *device, int port_num)
|
|
{
|
|
struct ib_agent_port_private *entry;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&ib_agent_port_list_lock, flags);
|
|
entry = __ib_get_agent_port(device, port_num);
|
|
spin_unlock_irqrestore(&ib_agent_port_list_lock, flags);
|
|
return entry;
|
|
}
|
|
|
|
int smi_check_local_dr_smp(struct ib_smp *smp,
|
|
struct ib_device *device,
|
|
int port_num)
|
|
{
|
|
struct ib_agent_port_private *port_priv;
|
|
|
|
if (smp->mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
|
|
return 1;
|
|
|
|
port_priv = ib_get_agent_port(device, port_num);
|
|
if (!port_priv) {
|
|
printk(KERN_DEBUG SPFX "smi_check_local_dr_smp %s port %d "
|
|
"not open\n", device->name, port_num);
|
|
return 1;
|
|
}
|
|
|
|
return smi_check_local_smp(port_priv->agent[0], smp);
|
|
}
|
|
|
|
int agent_send_response(struct ib_mad *mad, struct ib_grh *grh,
|
|
struct ib_wc *wc, struct ib_device *device,
|
|
int port_num, int qpn)
|
|
{
|
|
struct ib_agent_port_private *port_priv;
|
|
struct ib_mad_agent *agent;
|
|
struct ib_mad_send_buf *send_buf;
|
|
struct ib_ah *ah;
|
|
int ret;
|
|
|
|
port_priv = ib_get_agent_port(device, port_num);
|
|
if (!port_priv) {
|
|
printk(KERN_ERR SPFX "Unable to find port agent\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
agent = port_priv->agent[qpn];
|
|
ah = ib_create_ah_from_wc(agent->qp->pd, wc, grh, port_num);
|
|
if (IS_ERR(ah)) {
|
|
ret = PTR_ERR(ah);
|
|
printk(KERN_ERR SPFX "ib_create_ah_from_wc error:%d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
send_buf = ib_create_send_mad(agent, wc->src_qp, wc->pkey_index, 0,
|
|
IB_MGMT_MAD_HDR, IB_MGMT_MAD_DATA,
|
|
GFP_KERNEL);
|
|
if (IS_ERR(send_buf)) {
|
|
ret = PTR_ERR(send_buf);
|
|
printk(KERN_ERR SPFX "ib_create_send_mad error:%d\n", ret);
|
|
goto err1;
|
|
}
|
|
|
|
memcpy(send_buf->mad, mad, sizeof *mad);
|
|
send_buf->ah = ah;
|
|
if ((ret = ib_post_send_mad(send_buf, NULL))) {
|
|
printk(KERN_ERR SPFX "ib_post_send_mad error:%d\n", ret);
|
|
goto err2;
|
|
}
|
|
return 0;
|
|
err2:
|
|
ib_free_send_mad(send_buf);
|
|
err1:
|
|
ib_destroy_ah(ah);
|
|
return ret;
|
|
}
|
|
|
|
static void agent_send_handler(struct ib_mad_agent *mad_agent,
|
|
struct ib_mad_send_wc *mad_send_wc)
|
|
{
|
|
ib_destroy_ah(mad_send_wc->send_buf->ah);
|
|
ib_free_send_mad(mad_send_wc->send_buf);
|
|
}
|
|
|
|
int ib_agent_port_open(struct ib_device *device, int port_num)
|
|
{
|
|
struct ib_agent_port_private *port_priv;
|
|
unsigned long flags;
|
|
int ret;
|
|
|
|
/* Create new device info */
|
|
port_priv = kmalloc(sizeof *port_priv, GFP_KERNEL);
|
|
if (!port_priv) {
|
|
printk(KERN_ERR SPFX "No memory for ib_agent_port_private\n");
|
|
ret = -ENOMEM;
|
|
goto error1;
|
|
}
|
|
memset(port_priv, 0, sizeof *port_priv);
|
|
|
|
/* Obtain send only MAD agent for SMI QP */
|
|
port_priv->agent[0] = ib_register_mad_agent(device, port_num,
|
|
IB_QPT_SMI, NULL, 0,
|
|
&agent_send_handler,
|
|
NULL, NULL);
|
|
if (IS_ERR(port_priv->agent[0])) {
|
|
ret = PTR_ERR(port_priv->agent[0]);
|
|
goto error2;
|
|
}
|
|
|
|
/* Obtain send only MAD agent for GSI QP */
|
|
port_priv->agent[1] = ib_register_mad_agent(device, port_num,
|
|
IB_QPT_GSI, NULL, 0,
|
|
&agent_send_handler,
|
|
NULL, NULL);
|
|
if (IS_ERR(port_priv->agent[1])) {
|
|
ret = PTR_ERR(port_priv->agent[1]);
|
|
goto error3;
|
|
}
|
|
|
|
spin_lock_irqsave(&ib_agent_port_list_lock, flags);
|
|
list_add_tail(&port_priv->port_list, &ib_agent_port_list);
|
|
spin_unlock_irqrestore(&ib_agent_port_list_lock, flags);
|
|
|
|
return 0;
|
|
|
|
error3:
|
|
ib_unregister_mad_agent(port_priv->agent[0]);
|
|
error2:
|
|
kfree(port_priv);
|
|
error1:
|
|
return ret;
|
|
}
|
|
|
|
int ib_agent_port_close(struct ib_device *device, int port_num)
|
|
{
|
|
struct ib_agent_port_private *port_priv;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&ib_agent_port_list_lock, flags);
|
|
port_priv = __ib_get_agent_port(device, port_num);
|
|
if (port_priv == NULL) {
|
|
spin_unlock_irqrestore(&ib_agent_port_list_lock, flags);
|
|
printk(KERN_ERR SPFX "Port %d not found\n", port_num);
|
|
return -ENODEV;
|
|
}
|
|
list_del(&port_priv->port_list);
|
|
spin_unlock_irqrestore(&ib_agent_port_list_lock, flags);
|
|
|
|
ib_unregister_mad_agent(port_priv->agent[1]);
|
|
ib_unregister_mad_agent(port_priv->agent[0]);
|
|
kfree(port_priv);
|
|
return 0;
|
|
}
|
|
|