Release 4.11 drivers/infiniband/core/agent.c
/*
* 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) 2004-2007 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.
*
*/
#include <linux/slab.h>
#include <linux/string.h>
#include "agent.h"
#include "smi.h"
#include "mad_priv.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(const 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[1]->device == device &&
entry->agent[1]->port_num == port_num)
return entry;
}
return NULL;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Roland Dreier | 52 | 83.87% | 1 | 25.00% |
Sean Hefty | 7 | 11.29% | 1 | 25.00% |
Eli Cohen | 2 | 3.23% | 1 | 25.00% |
Ira Weiny | 1 | 1.61% | 1 | 25.00% |
Total | 62 | 100.00% | 4 | 100.00% |
static struct ib_agent_port_private *
ib_get_agent_port(const 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;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Roland Dreier | 53 | 98.15% | 1 | 50.00% |
Ira Weiny | 1 | 1.85% | 1 | 50.00% |
Total | 54 | 100.00% | 2 | 100.00% |
void agent_send_response(const struct ib_mad_hdr *mad_hdr, const struct ib_grh *grh,
const struct ib_wc *wc, const struct ib_device *device,
int port_num, int qpn, size_t resp_mad_len, bool opa)
{
struct ib_agent_port_private *port_priv;
struct ib_mad_agent *agent;
struct ib_mad_send_buf *send_buf;
struct ib_ah *ah;
struct ib_mad_send_wr_private *mad_send_wr;
if (rdma_cap_ib_switch(device))
port_priv = ib_get_agent_port(device, 0);
else
port_priv = ib_get_agent_port(device, port_num);
if (!port_priv) {
dev_err(&device->dev, "Unable to find port agent\n");
return;
}
agent = port_priv->agent[qpn];
ah = ib_create_ah_from_wc(agent->qp->pd, wc, grh, port_num);
if (IS_ERR(ah)) {
dev_err(&device->dev, "ib_create_ah_from_wc error %ld\n",
PTR_ERR(ah));
return;
}
if (opa && mad_hdr->base_version != OPA_MGMT_BASE_VERSION)
resp_mad_len = IB_MGMT_MAD_SIZE;
send_buf = ib_create_send_mad(agent, wc->src_qp, wc->pkey_index, 0,
IB_MGMT_MAD_HDR,
resp_mad_len - IB_MGMT_MAD_HDR,
GFP_KERNEL,
mad_hdr->base_version);
if (IS_ERR(send_buf)) {
dev_err(&device->dev, "ib_create_send_mad error\n");
goto err1;
}
memcpy(send_buf->mad, mad_hdr, resp_mad_len);
send_buf->ah = ah;
if (rdma_cap_ib_switch(device)) {
mad_send_wr = container_of(send_buf,
struct ib_mad_send_wr_private,
send_buf);
mad_send_wr->send_wr.port_num = port_num;
}
if (ib_post_send_mad(send_buf, NULL)) {
dev_err(&device->dev, "ib_post_send_mad error\n");
goto err2;
}
return;
err2:
ib_free_send_mad(send_buf);
err1:
ib_destroy_ah(ah);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Sean Hefty | 116 | 37.30% | 1 | 9.09% |
Roland Dreier | 69 | 22.19% | 1 | 9.09% |
Ira Weiny | 67 | 21.54% | 5 | 45.45% |
Hal Rosenstock | 57 | 18.33% | 3 | 27.27% |
Michael Heinz | 2 | 0.64% | 1 | 9.09% |
Total | 311 | 100.00% | 11 | 100.00% |
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);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Sean Hefty | 24 | 75.00% | 1 | 50.00% |
Roland Dreier | 8 | 25.00% | 1 | 50.00% |
Total | 32 | 100.00% | 2 | 100.00% |
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 = kzalloc(sizeof *port_priv, GFP_KERNEL);
if (!port_priv) {
ret = -ENOMEM;
goto error1;
}
if (rdma_cap_ib_smi(device, port_num)) {
/* 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, 0);
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, 0);
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:
if (port_priv->agent[0])
ib_unregister_mad_agent(port_priv->agent[0]);
error2:
kfree(port_priv);
error1:
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Roland Dreier | 186 | 76.23% | 2 | 28.57% |
Sean Hefty | 33 | 13.52% | 1 | 14.29% |
Eli Cohen | 19 | 7.79% | 1 | 14.29% |
Ira Weiny | 4 | 1.64% | 1 | 14.29% |
Hal Rosenstock | 1 | 0.41% | 1 | 14.29% |
Michael Wang | 1 | 0.41% | 1 | 14.29% |
Total | 244 | 100.00% | 7 | 100.00% |
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);
dev_err(&device->dev, "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]);
if (port_priv->agent[0])
ib_unregister_mad_agent(port_priv->agent[0]);
kfree(port_priv);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Roland Dreier | 99 | 79.84% | 1 | 25.00% |
Eli Cohen | 9 | 7.26% | 1 | 25.00% |
Ira Weiny | 8 | 6.45% | 1 | 25.00% |
Sean Hefty | 8 | 6.45% | 1 | 25.00% |
Total | 124 | 100.00% | 4 | 100.00% |
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
Roland Dreier | 479 | 54.68% | 2 | 11.76% |
Sean Hefty | 215 | 24.54% | 1 | 5.88% |
Ira Weiny | 81 | 9.25% | 6 | 35.29% |
Hal Rosenstock | 62 | 7.08% | 4 | 23.53% |
Eli Cohen | 30 | 3.42% | 1 | 5.88% |
Tim Schmielau | 6 | 0.68% | 1 | 5.88% |
Michael Heinz | 2 | 0.23% | 1 | 5.88% |
Michael Wang | 1 | 0.11% | 1 | 5.88% |
Total | 876 | 100.00% | 17 | 100.00% |
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