mirror of https://github.com/Qortal/Brooklyn
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.
367 lines
8.9 KiB
367 lines
8.9 KiB
/* |
|
* 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 <rdma/rdma_cm.h> |
|
|
|
#include "core_priv.h" |
|
#include "cma_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(dev_name(&ib_dev->dev), 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_dev_put(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 sysfs_emit(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; |
|
ssize_t ret; |
|
|
|
ret = cma_configfs_params_get(item, &cma_dev, &group); |
|
if (ret) |
|
return ret; |
|
|
|
gid_type = ib_cache_gid_parse_type_str(buf); |
|
if (gid_type < 0) { |
|
cma_configfs_params_put(cma_dev); |
|
return -EINVAL; |
|
} |
|
|
|
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 ssize_t default_roce_tos_show(struct config_item *item, char *buf) |
|
{ |
|
struct cma_device *cma_dev; |
|
struct cma_dev_port_group *group; |
|
ssize_t ret; |
|
u8 tos; |
|
|
|
ret = cma_configfs_params_get(item, &cma_dev, &group); |
|
if (ret) |
|
return ret; |
|
|
|
tos = cma_get_default_roce_tos(cma_dev, group->port_num); |
|
cma_configfs_params_put(cma_dev); |
|
|
|
return sysfs_emit(buf, "%u\n", tos); |
|
} |
|
|
|
static ssize_t default_roce_tos_store(struct config_item *item, |
|
const char *buf, size_t count) |
|
{ |
|
struct cma_device *cma_dev; |
|
struct cma_dev_port_group *group; |
|
ssize_t ret; |
|
u8 tos; |
|
|
|
ret = kstrtou8(buf, 0, &tos); |
|
if (ret) |
|
return ret; |
|
|
|
ret = cma_configfs_params_get(item, &cma_dev, &group); |
|
if (ret) |
|
return ret; |
|
|
|
ret = cma_set_default_roce_tos(cma_dev, group->port_num, tos); |
|
cma_configfs_params_put(cma_dev); |
|
|
|
return ret ? ret : strnlen(buf, count); |
|
} |
|
|
|
CONFIGFS_ATTR(, default_roce_tos); |
|
|
|
static struct configfs_attribute *cma_configfs_attributes[] = { |
|
&attr_default_roce_mode, |
|
&attr_default_roce_tos, |
|
NULL, |
|
}; |
|
|
|
static const 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; |
|
|
|
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) |
|
return -ENOMEM; |
|
|
|
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; |
|
} |
|
|
|
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 const 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 const 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; |
|
} |
|
|
|
strlcpy(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_dev_put(cma_dev); |
|
return &cma_dev_group->device_group; |
|
|
|
fail: |
|
if (cma_dev) |
|
cma_dev_put(cma_dev); |
|
kfree(cma_dev_group); |
|
return ERR_PTR(err); |
|
} |
|
|
|
static void drop_cma_dev(struct config_group *cgroup, 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); |
|
|
|
configfs_remove_default_groups(&cma_dev_group->ports_group); |
|
configfs_remove_default_groups(&cma_dev_group->device_group); |
|
config_item_put(item); |
|
} |
|
|
|
static struct configfs_group_operations cma_subsys_group_ops = { |
|
.make_group = make_cma_dev, |
|
.drop_item = drop_cma_dev, |
|
}; |
|
|
|
static const 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) |
|
{ |
|
int ret; |
|
|
|
config_group_init(&cma_subsys.su_group); |
|
mutex_init(&cma_subsys.su_mutex); |
|
ret = configfs_register_subsystem(&cma_subsys); |
|
if (ret) |
|
mutex_destroy(&cma_subsys.su_mutex); |
|
return ret; |
|
} |
|
|
|
void __exit cma_configfs_exit(void) |
|
{ |
|
configfs_unregister_subsystem(&cma_subsys); |
|
mutex_destroy(&cma_subsys.su_mutex); |
|
}
|
|
|