309 lines
7.4 KiB
C
309 lines
7.4 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2015, Mellanox Technologies 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/module.h>
|
||
|
|
#include <linux/configfs.h>
|
||
|
|
#include <rdma/ib_verbs.h>
|
||
|
|
#include "core_priv.h"
|
||
|
|
|
||
|
|
struct cma_device;
|
||
|
|
|
||
|
|
struct cma_dev_group;
|
||
|
|
|
||
|
|
struct cma_dev_port_group {
|
||
|
|
unsigned int port_num;
|
||
|
|
struct cma_dev_group *cma_dev_group;
|
||
|
|
struct config_group group;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct cma_dev_group {
|
||
|
|
char name[IB_DEVICE_NAME_MAX];
|
||
|
|
struct config_group device_group;
|
||
|
|
struct config_group ports_group;
|
||
|
|
struct cma_dev_port_group *ports;
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct cma_dev_port_group *to_dev_port_group(struct config_item *item)
|
||
|
|
{
|
||
|
|
struct config_group *group;
|
||
|
|
|
||
|
|
if (!item)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
group = container_of(item, struct config_group, cg_item);
|
||
|
|
return container_of(group, struct cma_dev_port_group, group);
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool filter_by_name(struct ib_device *ib_dev, void *cookie)
|
||
|
|
{
|
||
|
|
return !strcmp(ib_dev->name, cookie);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int cma_configfs_params_get(struct config_item *item,
|
||
|
|
struct cma_device **pcma_dev,
|
||
|
|
struct cma_dev_port_group **pgroup)
|
||
|
|
{
|
||
|
|
struct cma_dev_port_group *group = to_dev_port_group(item);
|
||
|
|
struct cma_device *cma_dev;
|
||
|
|
|
||
|
|
if (!group)
|
||
|
|
return -ENODEV;
|
||
|
|
|
||
|
|
cma_dev = cma_enum_devices_by_ibdev(filter_by_name,
|
||
|
|
group->cma_dev_group->name);
|
||
|
|
if (!cma_dev)
|
||
|
|
return -ENODEV;
|
||
|
|
|
||
|
|
*pcma_dev = cma_dev;
|
||
|
|
*pgroup = group;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void cma_configfs_params_put(struct cma_device *cma_dev)
|
||
|
|
{
|
||
|
|
cma_deref_dev(cma_dev);
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t default_roce_mode_show(struct config_item *item,
|
||
|
|
char *buf)
|
||
|
|
{
|
||
|
|
struct cma_device *cma_dev;
|
||
|
|
struct cma_dev_port_group *group;
|
||
|
|
int gid_type;
|
||
|
|
ssize_t ret;
|
||
|
|
|
||
|
|
ret = cma_configfs_params_get(item, &cma_dev, &group);
|
||
|
|
if (ret)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
gid_type = cma_get_default_gid_type(cma_dev, group->port_num);
|
||
|
|
cma_configfs_params_put(cma_dev);
|
||
|
|
|
||
|
|
if (gid_type < 0)
|
||
|
|
return gid_type;
|
||
|
|
|
||
|
|
return sprintf(buf, "%s\n", ib_cache_gid_type_str(gid_type));
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t default_roce_mode_store(struct config_item *item,
|
||
|
|
const char *buf, size_t count)
|
||
|
|
{
|
||
|
|
struct cma_device *cma_dev;
|
||
|
|
struct cma_dev_port_group *group;
|
||
|
|
int gid_type = ib_cache_gid_parse_type_str(buf);
|
||
|
|
ssize_t ret;
|
||
|
|
|
||
|
|
if (gid_type < 0)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
ret = cma_configfs_params_get(item, &cma_dev, &group);
|
||
|
|
if (ret)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
ret = cma_set_default_gid_type(cma_dev, group->port_num, gid_type);
|
||
|
|
|
||
|
|
cma_configfs_params_put(cma_dev);
|
||
|
|
|
||
|
|
return !ret ? strnlen(buf, count) : ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
CONFIGFS_ATTR(, default_roce_mode);
|
||
|
|
|
||
|
|
static struct configfs_attribute *cma_configfs_attributes[] = {
|
||
|
|
&attr_default_roce_mode,
|
||
|
|
NULL,
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct config_item_type cma_port_group_type = {
|
||
|
|
.ct_attrs = cma_configfs_attributes,
|
||
|
|
.ct_owner = THIS_MODULE
|
||
|
|
};
|
||
|
|
|
||
|
|
static int make_cma_ports(struct cma_dev_group *cma_dev_group,
|
||
|
|
struct cma_device *cma_dev)
|
||
|
|
{
|
||
|
|
struct ib_device *ibdev;
|
||
|
|
unsigned int i;
|
||
|
|
unsigned int ports_num;
|
||
|
|
struct cma_dev_port_group *ports;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
ibdev = cma_get_ib_dev(cma_dev);
|
||
|
|
|
||
|
|
if (!ibdev)
|
||
|
|
return -ENODEV;
|
||
|
|
|
||
|
|
ports_num = ibdev->phys_port_cnt;
|
||
|
|
ports = kcalloc(ports_num, sizeof(*cma_dev_group->ports),
|
||
|
|
GFP_KERNEL);
|
||
|
|
|
||
|
|
if (!ports) {
|
||
|
|
err = -ENOMEM;
|
||
|
|
goto free;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < ports_num; i++) {
|
||
|
|
char port_str[10];
|
||
|
|
|
||
|
|
ports[i].port_num = i + 1;
|
||
|
|
snprintf(port_str, sizeof(port_str), "%u", i + 1);
|
||
|
|
ports[i].cma_dev_group = cma_dev_group;
|
||
|
|
config_group_init_type_name(&ports[i].group,
|
||
|
|
port_str,
|
||
|
|
&cma_port_group_type);
|
||
|
|
configfs_add_default_group(&ports[i].group,
|
||
|
|
&cma_dev_group->ports_group);
|
||
|
|
|
||
|
|
}
|
||
|
|
cma_dev_group->ports = ports;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
free:
|
||
|
|
kfree(ports);
|
||
|
|
cma_dev_group->ports = NULL;
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void release_cma_dev(struct config_item *item)
|
||
|
|
{
|
||
|
|
struct config_group *group = container_of(item, struct config_group,
|
||
|
|
cg_item);
|
||
|
|
struct cma_dev_group *cma_dev_group = container_of(group,
|
||
|
|
struct cma_dev_group,
|
||
|
|
device_group);
|
||
|
|
|
||
|
|
kfree(cma_dev_group);
|
||
|
|
};
|
||
|
|
|
||
|
|
static void release_cma_ports_group(struct config_item *item)
|
||
|
|
{
|
||
|
|
struct config_group *group = container_of(item, struct config_group,
|
||
|
|
cg_item);
|
||
|
|
struct cma_dev_group *cma_dev_group = container_of(group,
|
||
|
|
struct cma_dev_group,
|
||
|
|
ports_group);
|
||
|
|
|
||
|
|
kfree(cma_dev_group->ports);
|
||
|
|
cma_dev_group->ports = NULL;
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct configfs_item_operations cma_ports_item_ops = {
|
||
|
|
.release = release_cma_ports_group
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct config_item_type cma_ports_group_type = {
|
||
|
|
.ct_item_ops = &cma_ports_item_ops,
|
||
|
|
.ct_owner = THIS_MODULE
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct configfs_item_operations cma_device_item_ops = {
|
||
|
|
.release = release_cma_dev
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct config_item_type cma_device_group_type = {
|
||
|
|
.ct_item_ops = &cma_device_item_ops,
|
||
|
|
.ct_owner = THIS_MODULE
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct config_group *make_cma_dev(struct config_group *group,
|
||
|
|
const char *name)
|
||
|
|
{
|
||
|
|
int err = -ENODEV;
|
||
|
|
struct cma_device *cma_dev = cma_enum_devices_by_ibdev(filter_by_name,
|
||
|
|
(void *)name);
|
||
|
|
struct cma_dev_group *cma_dev_group = NULL;
|
||
|
|
|
||
|
|
if (!cma_dev)
|
||
|
|
goto fail;
|
||
|
|
|
||
|
|
cma_dev_group = kzalloc(sizeof(*cma_dev_group), GFP_KERNEL);
|
||
|
|
|
||
|
|
if (!cma_dev_group) {
|
||
|
|
err = -ENOMEM;
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
|
||
|
|
strncpy(cma_dev_group->name, name, sizeof(cma_dev_group->name));
|
||
|
|
|
||
|
|
config_group_init_type_name(&cma_dev_group->ports_group, "ports",
|
||
|
|
&cma_ports_group_type);
|
||
|
|
|
||
|
|
err = make_cma_ports(cma_dev_group, cma_dev);
|
||
|
|
if (err)
|
||
|
|
goto fail;
|
||
|
|
|
||
|
|
config_group_init_type_name(&cma_dev_group->device_group, name,
|
||
|
|
&cma_device_group_type);
|
||
|
|
configfs_add_default_group(&cma_dev_group->ports_group,
|
||
|
|
&cma_dev_group->device_group);
|
||
|
|
|
||
|
|
cma_deref_dev(cma_dev);
|
||
|
|
return &cma_dev_group->device_group;
|
||
|
|
|
||
|
|
fail:
|
||
|
|
if (cma_dev)
|
||
|
|
cma_deref_dev(cma_dev);
|
||
|
|
kfree(cma_dev_group);
|
||
|
|
return ERR_PTR(err);
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct configfs_group_operations cma_subsys_group_ops = {
|
||
|
|
.make_group = make_cma_dev,
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct config_item_type cma_subsys_type = {
|
||
|
|
.ct_group_ops = &cma_subsys_group_ops,
|
||
|
|
.ct_owner = THIS_MODULE,
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct configfs_subsystem cma_subsys = {
|
||
|
|
.su_group = {
|
||
|
|
.cg_item = {
|
||
|
|
.ci_namebuf = "rdma_cm",
|
||
|
|
.ci_type = &cma_subsys_type,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
int __init cma_configfs_init(void)
|
||
|
|
{
|
||
|
|
config_group_init(&cma_subsys.su_group);
|
||
|
|
mutex_init(&cma_subsys.su_mutex);
|
||
|
|
return configfs_register_subsystem(&cma_subsys);
|
||
|
|
}
|
||
|
|
|
||
|
|
void __exit cma_configfs_exit(void)
|
||
|
|
{
|
||
|
|
configfs_unregister_subsystem(&cma_subsys);
|
||
|
|
}
|