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linuxdebug/drivers/infiniband/core/nldev.c

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null pointer error
2024-07-16 15:50:57 +02:00
/*
* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/module.h>
#include <linux/pid.h>
#include <linux/pid_namespace.h>
#include <linux/mutex.h>
#include <net/netlink.h>
#include <rdma/rdma_cm.h>
#include <rdma/rdma_netlink.h>
#include "core_priv.h"
#include "cma_priv.h"
#include "restrack.h"
#include "uverbs.h"
typedef int (*res_fill_func_t)(struct sk_buff*, bool,
struct rdma_restrack_entry*, uint32_t);
/*
* Sort array elements by the netlink attribute name
*/
static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
[RDMA_NLDEV_ATTR_CHARDEV] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_CHARDEV_ABI] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_CHARDEV_NAME] = { .type = NLA_NUL_STRING,
.len = RDMA_NLDEV_ATTR_EMPTY_STRING },
[RDMA_NLDEV_ATTR_CHARDEV_TYPE] = { .type = NLA_NUL_STRING,
.len = RDMA_NLDEV_ATTR_CHARDEV_TYPE_SIZE },
[RDMA_NLDEV_ATTR_DEV_DIM] = { .type = NLA_U8 },
[RDMA_NLDEV_ATTR_DEV_INDEX] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING,
.len = IB_DEVICE_NAME_MAX },
[RDMA_NLDEV_ATTR_DEV_NODE_TYPE] = { .type = NLA_U8 },
[RDMA_NLDEV_ATTR_DEV_PROTOCOL] = { .type = NLA_NUL_STRING,
.len = RDMA_NLDEV_ATTR_EMPTY_STRING },
[RDMA_NLDEV_ATTR_DRIVER] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_DRIVER_ENTRY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_DRIVER_PRINT_TYPE] = { .type = NLA_U8 },
[RDMA_NLDEV_ATTR_DRIVER_STRING] = { .type = NLA_NUL_STRING,
.len = RDMA_NLDEV_ATTR_EMPTY_STRING },
[RDMA_NLDEV_ATTR_DRIVER_S32] = { .type = NLA_S32 },
[RDMA_NLDEV_ATTR_DRIVER_S64] = { .type = NLA_S64 },
[RDMA_NLDEV_ATTR_DRIVER_U32] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_DRIVER_U64] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_FW_VERSION] = { .type = NLA_NUL_STRING,
.len = RDMA_NLDEV_ATTR_EMPTY_STRING },
[RDMA_NLDEV_ATTR_LID] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_LINK_TYPE] = { .type = NLA_NUL_STRING,
.len = IFNAMSIZ },
[RDMA_NLDEV_ATTR_LMC] = { .type = NLA_U8 },
[RDMA_NLDEV_ATTR_NDEV_INDEX] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_NDEV_NAME] = { .type = NLA_NUL_STRING,
.len = IFNAMSIZ },
[RDMA_NLDEV_ATTR_NODE_GUID] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_PORT_INDEX] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_PORT_PHYS_STATE] = { .type = NLA_U8 },
[RDMA_NLDEV_ATTR_PORT_STATE] = { .type = NLA_U8 },
[RDMA_NLDEV_ATTR_RES_CM_ID] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_CM_IDN] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_CQ] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_CQE] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_CQN] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_CQ_ENTRY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_CTX] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_CTXN] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_CTX_ENTRY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_DST_ADDR] = {
.len = sizeof(struct __kernel_sockaddr_storage) },
[RDMA_NLDEV_ATTR_RES_IOVA] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_RES_KERN_NAME] = { .type = NLA_NUL_STRING,
.len = RDMA_NLDEV_ATTR_EMPTY_STRING },
[RDMA_NLDEV_ATTR_RES_LKEY] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_LQPN] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_MR] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_MRLEN] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_RES_MRN] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_MR_ENTRY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE] = { .type = NLA_U8 },
[RDMA_NLDEV_ATTR_RES_PD] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_PDN] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_PD_ENTRY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_PID] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_POLL_CTX] = { .type = NLA_U8 },
[RDMA_NLDEV_ATTR_RES_PS] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_QP] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_QP_ENTRY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_RAW] = { .type = NLA_BINARY },
[RDMA_NLDEV_ATTR_RES_RKEY] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_RQPN] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_RQ_PSN] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_SQ_PSN] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_SRC_ADDR] = {
.len = sizeof(struct __kernel_sockaddr_storage) },
[RDMA_NLDEV_ATTR_RES_STATE] = { .type = NLA_U8 },
[RDMA_NLDEV_ATTR_RES_SUMMARY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR]= { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME]= { .type = NLA_NUL_STRING,
.len = RDMA_NLDEV_ATTR_EMPTY_STRING },
[RDMA_NLDEV_ATTR_RES_TYPE] = { .type = NLA_U8 },
[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]= { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_USECNT] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_RES_SRQ] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_SRQN] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_SRQ_ENTRY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_MIN_RANGE] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_MAX_RANGE] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_SM_LID] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_SUBNET_PREFIX] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_STAT_MODE] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_STAT_RES] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_STAT_COUNTER] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_STAT_COUNTER_ID] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME] = { .type = NLA_NUL_STRING },
[RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_SYS_IMAGE_GUID] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_UVERBS_DRIVER_ID] = { .type = NLA_U32 },
[RDMA_NLDEV_NET_NS_FD] = { .type = NLA_U32 },
[RDMA_NLDEV_SYS_ATTR_NETNS_MODE] = { .type = NLA_U8 },
[RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK] = { .type = NLA_U8 },
[RDMA_NLDEV_ATTR_STAT_HWCOUNTER_INDEX] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_STAT_HWCOUNTER_DYNAMIC] = { .type = NLA_U8 },
};
static int put_driver_name_print_type(struct sk_buff *msg, const char *name,
enum rdma_nldev_print_type print_type)
{
if (nla_put_string(msg, RDMA_NLDEV_ATTR_DRIVER_STRING, name))
return -EMSGSIZE;
if (print_type != RDMA_NLDEV_PRINT_TYPE_UNSPEC &&
nla_put_u8(msg, RDMA_NLDEV_ATTR_DRIVER_PRINT_TYPE, print_type))
return -EMSGSIZE;
return 0;
}
static int _rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name,
enum rdma_nldev_print_type print_type,
u32 value)
{
if (put_driver_name_print_type(msg, name, print_type))
return -EMSGSIZE;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DRIVER_U32, value))
return -EMSGSIZE;
return 0;
}
static int _rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name,
enum rdma_nldev_print_type print_type,
u64 value)
{
if (put_driver_name_print_type(msg, name, print_type))
return -EMSGSIZE;
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_DRIVER_U64, value,
RDMA_NLDEV_ATTR_PAD))
return -EMSGSIZE;
return 0;
}
int rdma_nl_put_driver_string(struct sk_buff *msg, const char *name,
const char *str)
{
if (put_driver_name_print_type(msg, name,
RDMA_NLDEV_PRINT_TYPE_UNSPEC))
return -EMSGSIZE;
if (nla_put_string(msg, RDMA_NLDEV_ATTR_DRIVER_STRING, str))
return -EMSGSIZE;
return 0;
}
EXPORT_SYMBOL(rdma_nl_put_driver_string);
int rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name, u32 value)
{
return _rdma_nl_put_driver_u32(msg, name, RDMA_NLDEV_PRINT_TYPE_UNSPEC,
value);
}
EXPORT_SYMBOL(rdma_nl_put_driver_u32);
int rdma_nl_put_driver_u32_hex(struct sk_buff *msg, const char *name,
u32 value)
{
return _rdma_nl_put_driver_u32(msg, name, RDMA_NLDEV_PRINT_TYPE_HEX,
value);
}
EXPORT_SYMBOL(rdma_nl_put_driver_u32_hex);
int rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name, u64 value)
{
return _rdma_nl_put_driver_u64(msg, name, RDMA_NLDEV_PRINT_TYPE_UNSPEC,
value);
}
EXPORT_SYMBOL(rdma_nl_put_driver_u64);
int rdma_nl_put_driver_u64_hex(struct sk_buff *msg, const char *name, u64 value)
{
return _rdma_nl_put_driver_u64(msg, name, RDMA_NLDEV_PRINT_TYPE_HEX,
value);
}
EXPORT_SYMBOL(rdma_nl_put_driver_u64_hex);
static int fill_nldev_handle(struct sk_buff *msg, struct ib_device *device)
{
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DEV_INDEX, device->index))
return -EMSGSIZE;
if (nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_NAME,
dev_name(&device->dev)))
return -EMSGSIZE;
return 0;
}
static int fill_dev_info(struct sk_buff *msg, struct ib_device *device)
{
char fw[IB_FW_VERSION_NAME_MAX];
int ret = 0;
u32 port;
if (fill_nldev_handle(msg, device))
return -EMSGSIZE;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, rdma_end_port(device)))
return -EMSGSIZE;
BUILD_BUG_ON(sizeof(device->attrs.device_cap_flags) != sizeof(u64));
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS,
device->attrs.device_cap_flags,
RDMA_NLDEV_ATTR_PAD))
return -EMSGSIZE;
ib_get_device_fw_str(device, fw);
/* Device without FW has strlen(fw) = 0 */
if (strlen(fw) && nla_put_string(msg, RDMA_NLDEV_ATTR_FW_VERSION, fw))
return -EMSGSIZE;
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_NODE_GUID,
be64_to_cpu(device->node_guid),
RDMA_NLDEV_ATTR_PAD))
return -EMSGSIZE;
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SYS_IMAGE_GUID,
be64_to_cpu(device->attrs.sys_image_guid),
RDMA_NLDEV_ATTR_PAD))
return -EMSGSIZE;
if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_NODE_TYPE, device->node_type))
return -EMSGSIZE;
if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_DIM, device->use_cq_dim))
return -EMSGSIZE;
/*
* Link type is determined on first port and mlx4 device
* which can potentially have two different link type for the same
* IB device is considered as better to be avoided in the future,
*/
port = rdma_start_port(device);
if (rdma_cap_opa_mad(device, port))
ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "opa");
else if (rdma_protocol_ib(device, port))
ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "ib");
else if (rdma_protocol_iwarp(device, port))
ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "iw");
else if (rdma_protocol_roce(device, port))
ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "roce");
else if (rdma_protocol_usnic(device, port))
ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL,
"usnic");
return ret;
}
static int fill_port_info(struct sk_buff *msg,
struct ib_device *device, u32 port,
const struct net *net)
{
struct net_device *netdev = NULL;
struct ib_port_attr attr;
int ret;
u64 cap_flags = 0;
if (fill_nldev_handle(msg, device))
return -EMSGSIZE;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port))
return -EMSGSIZE;
ret = ib_query_port(device, port, &attr);
if (ret)
return ret;
if (rdma_protocol_ib(device, port)) {
BUILD_BUG_ON((sizeof(attr.port_cap_flags) +
sizeof(attr.port_cap_flags2)) > sizeof(u64));
cap_flags = attr.port_cap_flags |
((u64)attr.port_cap_flags2 << 32);
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS,
cap_flags, RDMA_NLDEV_ATTR_PAD))
return -EMSGSIZE;
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SUBNET_PREFIX,
attr.subnet_prefix, RDMA_NLDEV_ATTR_PAD))
return -EMSGSIZE;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_LID, attr.lid))
return -EMSGSIZE;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_SM_LID, attr.sm_lid))
return -EMSGSIZE;
if (nla_put_u8(msg, RDMA_NLDEV_ATTR_LMC, attr.lmc))
return -EMSGSIZE;
}
if (nla_put_u8(msg, RDMA_NLDEV_ATTR_PORT_STATE, attr.state))
return -EMSGSIZE;
if (nla_put_u8(msg, RDMA_NLDEV_ATTR_PORT_PHYS_STATE, attr.phys_state))
return -EMSGSIZE;
netdev = ib_device_get_netdev(device, port);
if (netdev && net_eq(dev_net(netdev), net)) {
ret = nla_put_u32(msg,
RDMA_NLDEV_ATTR_NDEV_INDEX, netdev->ifindex);
if (ret)
goto out;
ret = nla_put_string(msg,
RDMA_NLDEV_ATTR_NDEV_NAME, netdev->name);
}
out:
if (netdev)
dev_put(netdev);
return ret;
}
static int fill_res_info_entry(struct sk_buff *msg,
const char *name, u64 curr)
{
struct nlattr *entry_attr;
entry_attr = nla_nest_start_noflag(msg,
RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY);
if (!entry_attr)
return -EMSGSIZE;
if (nla_put_string(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME, name))
goto err;
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR, curr,
RDMA_NLDEV_ATTR_PAD))
goto err;
nla_nest_end(msg, entry_attr);
return 0;
err:
nla_nest_cancel(msg, entry_attr);
return -EMSGSIZE;
}
static int fill_res_info(struct sk_buff *msg, struct ib_device *device)
{
static const char * const names[RDMA_RESTRACK_MAX] = {
[RDMA_RESTRACK_PD] = "pd",
[RDMA_RESTRACK_CQ] = "cq",
[RDMA_RESTRACK_QP] = "qp",
[RDMA_RESTRACK_CM_ID] = "cm_id",
[RDMA_RESTRACK_MR] = "mr",
[RDMA_RESTRACK_CTX] = "ctx",
[RDMA_RESTRACK_SRQ] = "srq",
};
struct nlattr *table_attr;
int ret, i, curr;
if (fill_nldev_handle(msg, device))
return -EMSGSIZE;
table_attr = nla_nest_start_noflag(msg, RDMA_NLDEV_ATTR_RES_SUMMARY);
if (!table_attr)
return -EMSGSIZE;
for (i = 0; i < RDMA_RESTRACK_MAX; i++) {
if (!names[i])
continue;
curr = rdma_restrack_count(device, i);
ret = fill_res_info_entry(msg, names[i], curr);
if (ret)
goto err;
}
nla_nest_end(msg, table_attr);
return 0;
err:
nla_nest_cancel(msg, table_attr);
return ret;
}
static int fill_res_name_pid(struct sk_buff *msg,
struct rdma_restrack_entry *res)
{
int err = 0;
/*
* For user resources, user is should read /proc/PID/comm to get the
* name of the task file.
*/
if (rdma_is_kernel_res(res)) {
err = nla_put_string(msg, RDMA_NLDEV_ATTR_RES_KERN_NAME,
res->kern_name);
} else {
pid_t pid;
pid = task_pid_vnr(res->task);
/*
* Task is dead and in zombie state.
* There is no need to print PID anymore.
*/
if (pid)
/*
* This part is racy, task can be killed and PID will
* be zero right here but it is ok, next query won't
* return PID. We don't promise real-time reflection
* of SW objects.
*/
err = nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PID, pid);
}
return err ? -EMSGSIZE : 0;
}
static int fill_res_qp_entry_query(struct sk_buff *msg,
struct rdma_restrack_entry *res,
struct ib_device *dev,
struct ib_qp *qp)
{
struct ib_qp_init_attr qp_init_attr;
struct ib_qp_attr qp_attr;
int ret;
ret = ib_query_qp(qp, &qp_attr, 0, &qp_init_attr);
if (ret)
return ret;
if (qp->qp_type == IB_QPT_RC || qp->qp_type == IB_QPT_UC) {
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RQPN,
qp_attr.dest_qp_num))
goto err;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RQ_PSN,
qp_attr.rq_psn))
goto err;
}
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_SQ_PSN, qp_attr.sq_psn))
goto err;
if (qp->qp_type == IB_QPT_RC || qp->qp_type == IB_QPT_UC ||
qp->qp_type == IB_QPT_XRC_INI || qp->qp_type == IB_QPT_XRC_TGT) {
if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE,
qp_attr.path_mig_state))
goto err;
}
if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, qp->qp_type))
goto err;
if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_STATE, qp_attr.qp_state))
goto err;
if (dev->ops.fill_res_qp_entry)
return dev->ops.fill_res_qp_entry(msg, qp);
return 0;
err: return -EMSGSIZE;
}
static int fill_res_qp_entry(struct sk_buff *msg, bool has_cap_net_admin,
struct rdma_restrack_entry *res, uint32_t port)
{
struct ib_qp *qp = container_of(res, struct ib_qp, res);
struct ib_device *dev = qp->device;
int ret;
if (port && port != qp->port)
return -EAGAIN;
/* In create_qp() port is not set yet */
if (qp->port && nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, qp->port))
return -EMSGSIZE;
ret = nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qp->qp_num);
if (ret)
return -EMSGSIZE;
if (!rdma_is_kernel_res(res) &&
nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, qp->pd->res.id))
return -EMSGSIZE;
ret = fill_res_name_pid(msg, res);
if (ret)
return -EMSGSIZE;
return fill_res_qp_entry_query(msg, res, dev, qp);
}
static int fill_res_qp_raw_entry(struct sk_buff *msg, bool has_cap_net_admin,
struct rdma_restrack_entry *res, uint32_t port)
{
struct ib_qp *qp = container_of(res, struct ib_qp, res);
struct ib_device *dev = qp->device;
if (port && port != qp->port)
return -EAGAIN;
if (!dev->ops.fill_res_qp_entry_raw)
return -EINVAL;
return dev->ops.fill_res_qp_entry_raw(msg, qp);
}
static int fill_res_cm_id_entry(struct sk_buff *msg, bool has_cap_net_admin,
struct rdma_restrack_entry *res, uint32_t port)
{
struct rdma_id_private *id_priv =
container_of(res, struct rdma_id_private, res);
struct ib_device *dev = id_priv->id.device;
struct rdma_cm_id *cm_id = &id_priv->id;
if (port && port != cm_id->port_num)
return -EAGAIN;
if (cm_id->port_num &&
nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, cm_id->port_num))
goto err;
if (id_priv->qp_num) {
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, id_priv->qp_num))
goto err;
if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, cm_id->qp_type))
goto err;
}
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PS, cm_id->ps))
goto err;
if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_STATE, id_priv->state))
goto err;
if (cm_id->route.addr.src_addr.ss_family &&
nla_put(msg, RDMA_NLDEV_ATTR_RES_SRC_ADDR,
sizeof(cm_id->route.addr.src_addr),
&cm_id->route.addr.src_addr))
goto err;
if (cm_id->route.addr.dst_addr.ss_family &&
nla_put(msg, RDMA_NLDEV_ATTR_RES_DST_ADDR,
sizeof(cm_id->route.addr.dst_addr),
&cm_id->route.addr.dst_addr))
goto err;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CM_IDN, res->id))
goto err;
if (fill_res_name_pid(msg, res))
goto err;
if (dev->ops.fill_res_cm_id_entry)
return dev->ops.fill_res_cm_id_entry(msg, cm_id);
return 0;
err: return -EMSGSIZE;
}
static int fill_res_cq_entry(struct sk_buff *msg, bool has_cap_net_admin,
struct rdma_restrack_entry *res, uint32_t port)
{
struct ib_cq *cq = container_of(res, struct ib_cq, res);
struct ib_device *dev = cq->device;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQE, cq->cqe))
return -EMSGSIZE;
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT,
atomic_read(&cq->usecnt), RDMA_NLDEV_ATTR_PAD))
return -EMSGSIZE;
/* Poll context is only valid for kernel CQs */
if (rdma_is_kernel_res(res) &&
nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_POLL_CTX, cq->poll_ctx))
return -EMSGSIZE;
if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_DIM, (cq->dim != NULL)))
return -EMSGSIZE;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQN, res->id))
return -EMSGSIZE;
if (!rdma_is_kernel_res(res) &&
nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN,
cq->uobject->uevent.uobject.context->res.id))
return -EMSGSIZE;
if (fill_res_name_pid(msg, res))
return -EMSGSIZE;
return (dev->ops.fill_res_cq_entry) ?
dev->ops.fill_res_cq_entry(msg, cq) : 0;
}
static int fill_res_cq_raw_entry(struct sk_buff *msg, bool has_cap_net_admin,
struct rdma_restrack_entry *res, uint32_t port)
{
struct ib_cq *cq = container_of(res, struct ib_cq, res);
struct ib_device *dev = cq->device;
if (!dev->ops.fill_res_cq_entry_raw)
return -EINVAL;
return dev->ops.fill_res_cq_entry_raw(msg, cq);
}
static int fill_res_mr_entry(struct sk_buff *msg, bool has_cap_net_admin,
struct rdma_restrack_entry *res, uint32_t port)
{
struct ib_mr *mr = container_of(res, struct ib_mr, res);
struct ib_device *dev = mr->pd->device;
if (has_cap_net_admin) {
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RKEY, mr->rkey))
return -EMSGSIZE;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LKEY, mr->lkey))
return -EMSGSIZE;
}
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_MRLEN, mr->length,
RDMA_NLDEV_ATTR_PAD))
return -EMSGSIZE;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_MRN, res->id))
return -EMSGSIZE;
if (!rdma_is_kernel_res(res) &&
nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, mr->pd->res.id))
return -EMSGSIZE;
if (fill_res_name_pid(msg, res))
return -EMSGSIZE;
return (dev->ops.fill_res_mr_entry) ?
dev->ops.fill_res_mr_entry(msg, mr) :
0;
}
static int fill_res_mr_raw_entry(struct sk_buff *msg, bool has_cap_net_admin,
struct rdma_restrack_entry *res, uint32_t port)
{
struct ib_mr *mr = container_of(res, struct ib_mr, res);
struct ib_device *dev = mr->pd->device;
if (!dev->ops.fill_res_mr_entry_raw)
return -EINVAL;
return dev->ops.fill_res_mr_entry_raw(msg, mr);
}
static int fill_res_pd_entry(struct sk_buff *msg, bool has_cap_net_admin,
struct rdma_restrack_entry *res, uint32_t port)
{
struct ib_pd *pd = container_of(res, struct ib_pd, res);
if (has_cap_net_admin) {
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY,
pd->local_dma_lkey))
goto err;
if ((pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY) &&
nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY,
pd->unsafe_global_rkey))
goto err;
}
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT,
atomic_read(&pd->usecnt), RDMA_NLDEV_ATTR_PAD))
goto err;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, res->id))
goto err;
if (!rdma_is_kernel_res(res) &&
nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN,
pd->uobject->context->res.id))
goto err;
return fill_res_name_pid(msg, res);
err: return -EMSGSIZE;
}
static int fill_res_ctx_entry(struct sk_buff *msg, bool has_cap_net_admin,
struct rdma_restrack_entry *res, uint32_t port)
{
struct ib_ucontext *ctx = container_of(res, struct ib_ucontext, res);
if (rdma_is_kernel_res(res))
return 0;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN, ctx->res.id))
return -EMSGSIZE;
return fill_res_name_pid(msg, res);
}
static int fill_res_range_qp_entry(struct sk_buff *msg, uint32_t min_range,
uint32_t max_range)
{
struct nlattr *entry_attr;
if (!min_range)
return 0;
entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP_ENTRY);
if (!entry_attr)
return -EMSGSIZE;
if (min_range == max_range) {
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, min_range))
goto err;
} else {
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_MIN_RANGE, min_range))
goto err;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_MAX_RANGE, max_range))
goto err;
}
nla_nest_end(msg, entry_attr);
return 0;
err:
nla_nest_cancel(msg, entry_attr);
return -EMSGSIZE;
}
static int fill_res_srq_qps(struct sk_buff *msg, struct ib_srq *srq)
{
uint32_t min_range = 0, prev = 0;
struct rdma_restrack_entry *res;
struct rdma_restrack_root *rt;
struct nlattr *table_attr;
struct ib_qp *qp = NULL;
unsigned long id = 0;
table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP);
if (!table_attr)
return -EMSGSIZE;
rt = &srq->device->res[RDMA_RESTRACK_QP];
xa_lock(&rt->xa);
xa_for_each(&rt->xa, id, res) {
if (!rdma_restrack_get(res))
continue;
qp = container_of(res, struct ib_qp, res);
if (!qp->srq || (qp->srq->res.id != srq->res.id)) {
rdma_restrack_put(res);
continue;
}
if (qp->qp_num < prev)
/* qp_num should be ascending */
goto err_loop;
if (min_range == 0) {
min_range = qp->qp_num;
} else if (qp->qp_num > (prev + 1)) {
if (fill_res_range_qp_entry(msg, min_range, prev))
goto err_loop;
min_range = qp->qp_num;
}
prev = qp->qp_num;
rdma_restrack_put(res);
}
xa_unlock(&rt->xa);
if (fill_res_range_qp_entry(msg, min_range, prev))
goto err;
nla_nest_end(msg, table_attr);
return 0;
err_loop:
rdma_restrack_put(res);
xa_unlock(&rt->xa);
err:
nla_nest_cancel(msg, table_attr);
return -EMSGSIZE;
}
static int fill_res_srq_entry(struct sk_buff *msg, bool has_cap_net_admin,
struct rdma_restrack_entry *res, uint32_t port)
{
struct ib_srq *srq = container_of(res, struct ib_srq, res);
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_SRQN, srq->res.id))
goto err;
if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, srq->srq_type))
goto err;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, srq->pd->res.id))
goto err;
if (ib_srq_has_cq(srq->srq_type)) {
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQN,
srq->ext.cq->res.id))
goto err;
}
if (fill_res_srq_qps(msg, srq))
goto err;
return fill_res_name_pid(msg, res);
err:
return -EMSGSIZE;
}
static int fill_stat_counter_mode(struct sk_buff *msg,
struct rdma_counter *counter)
{
struct rdma_counter_mode *m = &counter->mode;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, m->mode))
return -EMSGSIZE;
if (m->mode == RDMA_COUNTER_MODE_AUTO) {
if ((m->mask & RDMA_COUNTER_MASK_QP_TYPE) &&
nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, m->param.qp_type))
return -EMSGSIZE;
if ((m->mask & RDMA_COUNTER_MASK_PID) &&
fill_res_name_pid(msg, &counter->res))
return -EMSGSIZE;
}
return 0;
}
static int fill_stat_counter_qp_entry(struct sk_buff *msg, u32 qpn)
{
struct nlattr *entry_attr;
entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP_ENTRY);
if (!entry_attr)
return -EMSGSIZE;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn))
goto err;
nla_nest_end(msg, entry_attr);
return 0;
err:
nla_nest_cancel(msg, entry_attr);
return -EMSGSIZE;
}
static int fill_stat_counter_qps(struct sk_buff *msg,
struct rdma_counter *counter)
{
struct rdma_restrack_entry *res;
struct rdma_restrack_root *rt;
struct nlattr *table_attr;
struct ib_qp *qp = NULL;
unsigned long id = 0;
int ret = 0;
table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP);
if (!table_attr)
return -EMSGSIZE;
rt = &counter->device->res[RDMA_RESTRACK_QP];
xa_lock(&rt->xa);
xa_for_each(&rt->xa, id, res) {
qp = container_of(res, struct ib_qp, res);
if (!qp->counter || (qp->counter->id != counter->id))
continue;
ret = fill_stat_counter_qp_entry(msg, qp->qp_num);
if (ret)
goto err;
}
xa_unlock(&rt->xa);
nla_nest_end(msg, table_attr);
return 0;
err:
xa_unlock(&rt->xa);
nla_nest_cancel(msg, table_attr);
return ret;
}
int rdma_nl_stat_hwcounter_entry(struct sk_buff *msg, const char *name,
u64 value)
{
struct nlattr *entry_attr;
entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY);
if (!entry_attr)
return -EMSGSIZE;
if (nla_put_string(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME,
name))
goto err;
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE,
value, RDMA_NLDEV_ATTR_PAD))
goto err;
nla_nest_end(msg, entry_attr);
return 0;
err:
nla_nest_cancel(msg, entry_attr);
return -EMSGSIZE;
}
EXPORT_SYMBOL(rdma_nl_stat_hwcounter_entry);
static int fill_stat_mr_entry(struct sk_buff *msg, bool has_cap_net_admin,
struct rdma_restrack_entry *res, uint32_t port)
{
struct ib_mr *mr = container_of(res, struct ib_mr, res);
struct ib_device *dev = mr->pd->device;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_MRN, res->id))
goto err;
if (dev->ops.fill_stat_mr_entry)
return dev->ops.fill_stat_mr_entry(msg, mr);
return 0;
err:
return -EMSGSIZE;
}
static int fill_stat_counter_hwcounters(struct sk_buff *msg,
struct rdma_counter *counter)
{
struct rdma_hw_stats *st = counter->stats;
struct nlattr *table_attr;
int i;
table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS);
if (!table_attr)
return -EMSGSIZE;
mutex_lock(&st->lock);
for (i = 0; i < st->num_counters; i++) {
if (test_bit(i, st->is_disabled))
continue;
if (rdma_nl_stat_hwcounter_entry(msg, st->descs[i].name,
st->value[i]))
goto err;
}
mutex_unlock(&st->lock);
nla_nest_end(msg, table_attr);
return 0;
err:
mutex_unlock(&st->lock);
nla_nest_cancel(msg, table_attr);
return -EMSGSIZE;
}
static int fill_res_counter_entry(struct sk_buff *msg, bool has_cap_net_admin,
struct rdma_restrack_entry *res,
uint32_t port)
{
struct rdma_counter *counter =
container_of(res, struct rdma_counter, res);
if (port && port != counter->port)
return -EAGAIN;
/* Dump it even query failed */
rdma_counter_query_stats(counter);
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, counter->port) ||
nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, counter->id) ||
fill_stat_counter_mode(msg, counter) ||
fill_stat_counter_qps(msg, counter) ||
fill_stat_counter_hwcounters(msg, counter))
return -EMSGSIZE;
return 0;
}
static int nldev_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
struct ib_device *device;
struct sk_buff *msg;
u32 index;
int err;
err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, extack);
if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
return -EINVAL;
index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
device = ib_device_get_by_index(sock_net(skb->sk), index);
if (!device)
return -EINVAL;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg) {
err = -ENOMEM;
goto err;
}
nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
0, 0);
err = fill_dev_info(msg, device);
if (err)
goto err_free;
nlmsg_end(msg, nlh);
ib_device_put(device);
return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
err_free:
nlmsg_free(msg);
err:
ib_device_put(device);
return err;
}
static int nldev_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
struct ib_device *device;
u32 index;
int err;
err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, extack);
if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
return -EINVAL;
index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
device = ib_device_get_by_index(sock_net(skb->sk), index);
if (!device)
return -EINVAL;
if (tb[RDMA_NLDEV_ATTR_DEV_NAME]) {
char name[IB_DEVICE_NAME_MAX] = {};
nla_strscpy(name, tb[RDMA_NLDEV_ATTR_DEV_NAME],
IB_DEVICE_NAME_MAX);
if (strlen(name) == 0) {
err = -EINVAL;
goto done;
}
err = ib_device_rename(device, name);
goto done;
}
if (tb[RDMA_NLDEV_NET_NS_FD]) {
u32 ns_fd;
ns_fd = nla_get_u32(tb[RDMA_NLDEV_NET_NS_FD]);
err = ib_device_set_netns_put(skb, device, ns_fd);
goto put_done;
}
if (tb[RDMA_NLDEV_ATTR_DEV_DIM]) {
u8 use_dim;
use_dim = nla_get_u8(tb[RDMA_NLDEV_ATTR_DEV_DIM]);
err = ib_device_set_dim(device, use_dim);
goto done;
}
done:
ib_device_put(device);
put_done:
return err;
}
static int _nldev_get_dumpit(struct ib_device *device,
struct sk_buff *skb,
struct netlink_callback *cb,
unsigned int idx)
{
int start = cb->args[0];
struct nlmsghdr *nlh;
if (idx < start)
return 0;
nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
0, NLM_F_MULTI);
if (fill_dev_info(skb, device)) {
nlmsg_cancel(skb, nlh);
goto out;
}
nlmsg_end(skb, nlh);
idx++;
out: cb->args[0] = idx;
return skb->len;
}
static int nldev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
{
/*
* There is no need to take lock, because
* we are relying on ib_core's locking.
*/
return ib_enum_all_devs(_nldev_get_dumpit, skb, cb);
}
static int nldev_port_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
struct ib_device *device;
struct sk_buff *msg;
u32 index;
u32 port;
int err;
err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, extack);
if (err ||
!tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
!tb[RDMA_NLDEV_ATTR_PORT_INDEX])
return -EINVAL;
index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
device = ib_device_get_by_index(sock_net(skb->sk), index);
if (!device)
return -EINVAL;
port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
if (!rdma_is_port_valid(device, port)) {
err = -EINVAL;
goto err;
}
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg) {
err = -ENOMEM;
goto err;
}
nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET),
0, 0);
err = fill_port_info(msg, device, port, sock_net(skb->sk));
if (err)
goto err_free;
nlmsg_end(msg, nlh);
ib_device_put(device);
return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
err_free:
nlmsg_free(msg);
err:
ib_device_put(device);
return err;
}
static int nldev_port_get_dumpit(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
struct ib_device *device;
int start = cb->args[0];
struct nlmsghdr *nlh;
u32 idx = 0;
u32 ifindex;
int err;
unsigned int p;
err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, NULL);
if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
return -EINVAL;
ifindex = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
device = ib_device_get_by_index(sock_net(skb->sk), ifindex);
if (!device)
return -EINVAL;
rdma_for_each_port (device, p) {
/*
* The dumpit function returns all information from specific
* index. This specific index is taken from the netlink
* messages request sent by user and it is available
* in cb->args[0].
*
* Usually, the user doesn't fill this field and it causes
* to return everything.
*
*/
if (idx < start) {
idx++;
continue;
}
nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
RDMA_NLDEV_CMD_PORT_GET),
0, NLM_F_MULTI);
if (fill_port_info(skb, device, p, sock_net(skb->sk))) {
nlmsg_cancel(skb, nlh);
goto out;
}
idx++;
nlmsg_end(skb, nlh);
}
out:
ib_device_put(device);
cb->args[0] = idx;
return skb->len;
}
static int nldev_res_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
struct ib_device *device;
struct sk_buff *msg;
u32 index;
int ret;
ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, extack);
if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
return -EINVAL;
index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
device = ib_device_get_by_index(sock_net(skb->sk), index);
if (!device)
return -EINVAL;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg) {
ret = -ENOMEM;
goto err;
}
nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET),
0, 0);
ret = fill_res_info(msg, device);
if (ret)
goto err_free;
nlmsg_end(msg, nlh);
ib_device_put(device);
return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
err_free:
nlmsg_free(msg);
err:
ib_device_put(device);
return ret;
}
static int _nldev_res_get_dumpit(struct ib_device *device,
struct sk_buff *skb,
struct netlink_callback *cb,
unsigned int idx)
{
int start = cb->args[0];
struct nlmsghdr *nlh;
if (idx < start)
return 0;
nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET),
0, NLM_F_MULTI);
if (fill_res_info(skb, device)) {
nlmsg_cancel(skb, nlh);
goto out;
}
nlmsg_end(skb, nlh);
idx++;
out:
cb->args[0] = idx;
return skb->len;
}
static int nldev_res_get_dumpit(struct sk_buff *skb,
struct netlink_callback *cb)
{
return ib_enum_all_devs(_nldev_res_get_dumpit, skb, cb);
}
struct nldev_fill_res_entry {
enum rdma_nldev_attr nldev_attr;
u8 flags;
u32 entry;
u32 id;
};
enum nldev_res_flags {
NLDEV_PER_DEV = 1 << 0,
};
static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = {
[RDMA_RESTRACK_QP] = {
.nldev_attr = RDMA_NLDEV_ATTR_RES_QP,
.entry = RDMA_NLDEV_ATTR_RES_QP_ENTRY,
.id = RDMA_NLDEV_ATTR_RES_LQPN,
},
[RDMA_RESTRACK_CM_ID] = {
.nldev_attr = RDMA_NLDEV_ATTR_RES_CM_ID,
.entry = RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY,
.id = RDMA_NLDEV_ATTR_RES_CM_IDN,
},
[RDMA_RESTRACK_CQ] = {
.nldev_attr = RDMA_NLDEV_ATTR_RES_CQ,
.flags = NLDEV_PER_DEV,
.entry = RDMA_NLDEV_ATTR_RES_CQ_ENTRY,
.id = RDMA_NLDEV_ATTR_RES_CQN,
},
[RDMA_RESTRACK_MR] = {
.nldev_attr = RDMA_NLDEV_ATTR_RES_MR,
.flags = NLDEV_PER_DEV,
.entry = RDMA_NLDEV_ATTR_RES_MR_ENTRY,
.id = RDMA_NLDEV_ATTR_RES_MRN,
},
[RDMA_RESTRACK_PD] = {
.nldev_attr = RDMA_NLDEV_ATTR_RES_PD,
.flags = NLDEV_PER_DEV,
.entry = RDMA_NLDEV_ATTR_RES_PD_ENTRY,
.id = RDMA_NLDEV_ATTR_RES_PDN,
},
[RDMA_RESTRACK_COUNTER] = {
.nldev_attr = RDMA_NLDEV_ATTR_STAT_COUNTER,
.entry = RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY,
.id = RDMA_NLDEV_ATTR_STAT_COUNTER_ID,
},
[RDMA_RESTRACK_CTX] = {
.nldev_attr = RDMA_NLDEV_ATTR_RES_CTX,
.flags = NLDEV_PER_DEV,
.entry = RDMA_NLDEV_ATTR_RES_CTX_ENTRY,
.id = RDMA_NLDEV_ATTR_RES_CTXN,
},
[RDMA_RESTRACK_SRQ] = {
.nldev_attr = RDMA_NLDEV_ATTR_RES_SRQ,
.flags = NLDEV_PER_DEV,
.entry = RDMA_NLDEV_ATTR_RES_SRQ_ENTRY,
.id = RDMA_NLDEV_ATTR_RES_SRQN,
},
};
static int res_get_common_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack,
enum rdma_restrack_type res_type,
res_fill_func_t fill_func)
{
const struct nldev_fill_res_entry *fe = &fill_entries[res_type];
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
struct rdma_restrack_entry *res;
struct ib_device *device;
u32 index, id, port = 0;
bool has_cap_net_admin;
struct sk_buff *msg;
int ret;
ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, extack);
if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !fe->id || !tb[fe->id])
return -EINVAL;
index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
device = ib_device_get_by_index(sock_net(skb->sk), index);
if (!device)
return -EINVAL;
if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
if (!rdma_is_port_valid(device, port)) {
ret = -EINVAL;
goto err;
}
}
if ((port && fe->flags & NLDEV_PER_DEV) ||
(!port && ~fe->flags & NLDEV_PER_DEV)) {
ret = -EINVAL;
goto err;
}
id = nla_get_u32(tb[fe->id]);
res = rdma_restrack_get_byid(device, res_type, id);
if (IS_ERR(res)) {
ret = PTR_ERR(res);
goto err;
}
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg) {
ret = -ENOMEM;
goto err_get;
}
nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
RDMA_NL_GET_OP(nlh->nlmsg_type)),
0, 0);
if (fill_nldev_handle(msg, device)) {
ret = -EMSGSIZE;
goto err_free;
}
has_cap_net_admin = netlink_capable(skb, CAP_NET_ADMIN);
ret = fill_func(msg, has_cap_net_admin, res, port);
if (ret)
goto err_free;
rdma_restrack_put(res);
nlmsg_end(msg, nlh);
ib_device_put(device);
return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
err_free:
nlmsg_free(msg);
err_get:
rdma_restrack_put(res);
err:
ib_device_put(device);
return ret;
}
static int res_get_common_dumpit(struct sk_buff *skb,
struct netlink_callback *cb,
enum rdma_restrack_type res_type,
res_fill_func_t fill_func)
{
const struct nldev_fill_res_entry *fe = &fill_entries[res_type];
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
struct rdma_restrack_entry *res;
struct rdma_restrack_root *rt;
int err, ret = 0, idx = 0;
struct nlattr *table_attr;
struct nlattr *entry_attr;
struct ib_device *device;
int start = cb->args[0];
bool has_cap_net_admin;
struct nlmsghdr *nlh;
unsigned long id;
u32 index, port = 0;
bool filled = false;
err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, NULL);
/*
* Right now, we are expecting the device index to get res information,
* but it is possible to extend this code to return all devices in
* one shot by checking the existence of RDMA_NLDEV_ATTR_DEV_INDEX.
* if it doesn't exist, we will iterate over all devices.
*
* But it is not needed for now.
*/
if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
return -EINVAL;
index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
device = ib_device_get_by_index(sock_net(skb->sk), index);
if (!device)
return -EINVAL;
/*
* If no PORT_INDEX is supplied, we will return all QPs from that device
*/
if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
if (!rdma_is_port_valid(device, port)) {
ret = -EINVAL;
goto err_index;
}
}
nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
RDMA_NL_GET_OP(cb->nlh->nlmsg_type)),
0, NLM_F_MULTI);
if (fill_nldev_handle(skb, device)) {
ret = -EMSGSIZE;
goto err;
}
table_attr = nla_nest_start_noflag(skb, fe->nldev_attr);
if (!table_attr) {
ret = -EMSGSIZE;
goto err;
}
has_cap_net_admin = netlink_capable(cb->skb, CAP_NET_ADMIN);
rt = &device->res[res_type];
xa_lock(&rt->xa);
/*
* FIXME: if the skip ahead is something common this loop should
* use xas_for_each & xas_pause to optimize, we can have a lot of
* objects.
*/
xa_for_each(&rt->xa, id, res) {
if (idx < start || !rdma_restrack_get(res))
goto next;
xa_unlock(&rt->xa);
filled = true;
entry_attr = nla_nest_start_noflag(skb, fe->entry);
if (!entry_attr) {
ret = -EMSGSIZE;
rdma_restrack_put(res);
goto msg_full;
}
ret = fill_func(skb, has_cap_net_admin, res, port);
rdma_restrack_put(res);
if (ret) {
nla_nest_cancel(skb, entry_attr);
if (ret == -EMSGSIZE)
goto msg_full;
if (ret == -EAGAIN)
goto again;
goto res_err;
}
nla_nest_end(skb, entry_attr);
again: xa_lock(&rt->xa);
next: idx++;
}
xa_unlock(&rt->xa);
msg_full:
nla_nest_end(skb, table_attr);
nlmsg_end(skb, nlh);
cb->args[0] = idx;
/*
* No more entries to fill, cancel the message and
* return 0 to mark end of dumpit.
*/
if (!filled)
goto err;
ib_device_put(device);
return skb->len;
res_err:
nla_nest_cancel(skb, table_attr);
err:
nlmsg_cancel(skb, nlh);
err_index:
ib_device_put(device);
return ret;
}
#define RES_GET_FUNCS(name, type) \
static int nldev_res_get_##name##_dumpit(struct sk_buff *skb, \
struct netlink_callback *cb) \
{ \
return res_get_common_dumpit(skb, cb, type, \
fill_res_##name##_entry); \
} \
static int nldev_res_get_##name##_doit(struct sk_buff *skb, \
struct nlmsghdr *nlh, \
struct netlink_ext_ack *extack) \
{ \
return res_get_common_doit(skb, nlh, extack, type, \
fill_res_##name##_entry); \
}
RES_GET_FUNCS(qp, RDMA_RESTRACK_QP);
RES_GET_FUNCS(qp_raw, RDMA_RESTRACK_QP);
RES_GET_FUNCS(cm_id, RDMA_RESTRACK_CM_ID);
RES_GET_FUNCS(cq, RDMA_RESTRACK_CQ);
RES_GET_FUNCS(cq_raw, RDMA_RESTRACK_CQ);
RES_GET_FUNCS(pd, RDMA_RESTRACK_PD);
RES_GET_FUNCS(mr, RDMA_RESTRACK_MR);
RES_GET_FUNCS(mr_raw, RDMA_RESTRACK_MR);
RES_GET_FUNCS(counter, RDMA_RESTRACK_COUNTER);
RES_GET_FUNCS(ctx, RDMA_RESTRACK_CTX);
RES_GET_FUNCS(srq, RDMA_RESTRACK_SRQ);
static LIST_HEAD(link_ops);
static DECLARE_RWSEM(link_ops_rwsem);
static const struct rdma_link_ops *link_ops_get(const char *type)
{
const struct rdma_link_ops *ops;
list_for_each_entry(ops, &link_ops, list) {
if (!strcmp(ops->type, type))
goto out;
}
ops = NULL;
out:
return ops;
}
void rdma_link_register(struct rdma_link_ops *ops)
{
down_write(&link_ops_rwsem);
if (WARN_ON_ONCE(link_ops_get(ops->type)))
goto out;
list_add(&ops->list, &link_ops);
out:
up_write(&link_ops_rwsem);
}
EXPORT_SYMBOL(rdma_link_register);
void rdma_link_unregister(struct rdma_link_ops *ops)
{
down_write(&link_ops_rwsem);
list_del(&ops->list);
up_write(&link_ops_rwsem);
}
EXPORT_SYMBOL(rdma_link_unregister);
static int nldev_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
char ibdev_name[IB_DEVICE_NAME_MAX];
const struct rdma_link_ops *ops;
char ndev_name[IFNAMSIZ];
struct net_device *ndev;
char type[IFNAMSIZ];
int err;
err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, extack);
if (err || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
!tb[RDMA_NLDEV_ATTR_LINK_TYPE] || !tb[RDMA_NLDEV_ATTR_NDEV_NAME])
return -EINVAL;
nla_strscpy(ibdev_name, tb[RDMA_NLDEV_ATTR_DEV_NAME],
sizeof(ibdev_name));
if (strchr(ibdev_name, '%') || strlen(ibdev_name) == 0)
return -EINVAL;
nla_strscpy(type, tb[RDMA_NLDEV_ATTR_LINK_TYPE], sizeof(type));
nla_strscpy(ndev_name, tb[RDMA_NLDEV_ATTR_NDEV_NAME],
sizeof(ndev_name));
ndev = dev_get_by_name(sock_net(skb->sk), ndev_name);
if (!ndev)
return -ENODEV;
down_read(&link_ops_rwsem);
ops = link_ops_get(type);
#ifdef CONFIG_MODULES
if (!ops) {
up_read(&link_ops_rwsem);
request_module("rdma-link-%s", type);
down_read(&link_ops_rwsem);
ops = link_ops_get(type);
}
#endif
err = ops ? ops->newlink(ibdev_name, ndev) : -EINVAL;
up_read(&link_ops_rwsem);
dev_put(ndev);
return err;
}
static int nldev_dellink(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
struct ib_device *device;
u32 index;
int err;
err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, extack);
if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
return -EINVAL;
index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
device = ib_device_get_by_index(sock_net(skb->sk), index);
if (!device)
return -EINVAL;
if (!(device->attrs.kernel_cap_flags & IBK_ALLOW_USER_UNREG)) {
ib_device_put(device);
return -EINVAL;
}
ib_unregister_device_and_put(device);
return 0;
}
static int nldev_get_chardev(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
char client_name[RDMA_NLDEV_ATTR_CHARDEV_TYPE_SIZE];
struct ib_client_nl_info data = {};
struct ib_device *ibdev = NULL;
struct sk_buff *msg;
u32 index;
int err;
err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy,
extack);
if (err || !tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE])
return -EINVAL;
nla_strscpy(client_name, tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE],
sizeof(client_name));
if (tb[RDMA_NLDEV_ATTR_DEV_INDEX]) {
index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
ibdev = ib_device_get_by_index(sock_net(skb->sk), index);
if (!ibdev)
return -EINVAL;
if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
data.port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
if (!rdma_is_port_valid(ibdev, data.port)) {
err = -EINVAL;
goto out_put;
}
} else {
data.port = -1;
}
} else if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
return -EINVAL;
}
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg) {
err = -ENOMEM;
goto out_put;
}
nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
RDMA_NLDEV_CMD_GET_CHARDEV),
0, 0);
data.nl_msg = msg;
err = ib_get_client_nl_info(ibdev, client_name, &data);
if (err)
goto out_nlmsg;
err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV,
huge_encode_dev(data.cdev->devt),
RDMA_NLDEV_ATTR_PAD);
if (err)
goto out_data;
err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV_ABI, data.abi,
RDMA_NLDEV_ATTR_PAD);
if (err)
goto out_data;
if (nla_put_string(msg, RDMA_NLDEV_ATTR_CHARDEV_NAME,
dev_name(data.cdev))) {
err = -EMSGSIZE;
goto out_data;
}
nlmsg_end(msg, nlh);
put_device(data.cdev);
if (ibdev)
ib_device_put(ibdev);
return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
out_data:
put_device(data.cdev);
out_nlmsg:
nlmsg_free(msg);
out_put:
if (ibdev)
ib_device_put(ibdev);
return err;
}
static int nldev_sys_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
struct sk_buff *msg;
int err;
err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, extack);
if (err)
return err;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
RDMA_NLDEV_CMD_SYS_GET),
0, 0);
err = nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_NETNS_MODE,
(u8)ib_devices_shared_netns);
if (err) {
nlmsg_free(msg);
return err;
}
/*
* Copy-on-fork is supported.
* See commits:
* 70e806e4e645 ("mm: Do early cow for pinned pages during fork() for ptes")
* 4eae4efa2c29 ("hugetlb: do early cow when page pinned on src mm")
* for more details. Don't backport this without them.
*
* Return value ignored on purpose, assume copy-on-fork is not
* supported in case of failure.
*/
nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK, 1);
nlmsg_end(msg, nlh);
return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
}
static int nldev_set_sys_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
u8 enable;
int err;
err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, extack);
if (err || !tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE])
return -EINVAL;
enable = nla_get_u8(tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]);
/* Only 0 and 1 are supported */
if (enable > 1)
return -EINVAL;
err = rdma_compatdev_set(enable);
return err;
}
static int nldev_stat_set_mode_doit(struct sk_buff *msg,
struct netlink_ext_ack *extack,
struct nlattr *tb[],
struct ib_device *device, u32 port)
{
u32 mode, mask = 0, qpn, cntn = 0;
int ret;
/* Currently only counter for QP is supported */
if (!tb[RDMA_NLDEV_ATTR_STAT_RES] ||
nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP)
return -EINVAL;
mode = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_MODE]);
if (mode == RDMA_COUNTER_MODE_AUTO) {
if (tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK])
mask = nla_get_u32(
tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK]);
return rdma_counter_set_auto_mode(device, port, mask, extack);
}
if (!tb[RDMA_NLDEV_ATTR_RES_LQPN])
return -EINVAL;
qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]);
if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]) {
cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]);
ret = rdma_counter_bind_qpn(device, port, qpn, cntn);
if (ret)
return ret;
} else {
ret = rdma_counter_bind_qpn_alloc(device, port, qpn, &cntn);
if (ret)
return ret;
}
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) ||
nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) {
ret = -EMSGSIZE;
goto err_fill;
}
return 0;
err_fill:
rdma_counter_unbind_qpn(device, port, qpn, cntn);
return ret;
}
static int nldev_stat_set_counter_dynamic_doit(struct nlattr *tb[],
struct ib_device *device,
u32 port)
{
struct rdma_hw_stats *stats;
struct nlattr *entry_attr;
unsigned long *target;
int rem, i, ret = 0;
u32 index;
stats = ib_get_hw_stats_port(device, port);
if (!stats)
return -EINVAL;
target = kcalloc(BITS_TO_LONGS(stats->num_counters),
sizeof(*stats->is_disabled), GFP_KERNEL);
if (!target)
return -ENOMEM;
nla_for_each_nested(entry_attr, tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS],
rem) {
index = nla_get_u32(entry_attr);
if ((index >= stats->num_counters) ||
!(stats->descs[index].flags & IB_STAT_FLAG_OPTIONAL)) {
ret = -EINVAL;
goto out;
}
set_bit(index, target);
}
for (i = 0; i < stats->num_counters; i++) {
if (!(stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL))
continue;
ret = rdma_counter_modify(device, port, i, test_bit(i, target));
if (ret)
goto out;
}
out:
kfree(target);
return ret;
}
static int nldev_stat_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
struct ib_device *device;
struct sk_buff *msg;
u32 index, port;
int ret;
ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy,
extack);
if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
!tb[RDMA_NLDEV_ATTR_PORT_INDEX])
return -EINVAL;
index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
device = ib_device_get_by_index(sock_net(skb->sk), index);
if (!device)
return -EINVAL;
port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
if (!rdma_is_port_valid(device, port)) {
ret = -EINVAL;
goto err_put_device;
}
if (!tb[RDMA_NLDEV_ATTR_STAT_MODE] &&
!tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS]) {
ret = -EINVAL;
goto err_put_device;
}
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg) {
ret = -ENOMEM;
goto err_put_device;
}
nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
RDMA_NLDEV_CMD_STAT_SET),
0, 0);
if (fill_nldev_handle(msg, device) ||
nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) {
ret = -EMSGSIZE;
goto err_free_msg;
}
if (tb[RDMA_NLDEV_ATTR_STAT_MODE]) {
ret = nldev_stat_set_mode_doit(msg, extack, tb, device, port);
if (ret)
goto err_free_msg;
}
if (tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS]) {
ret = nldev_stat_set_counter_dynamic_doit(tb, device, port);
if (ret)
goto err_free_msg;
}
nlmsg_end(msg, nlh);
ib_device_put(device);
return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
err_free_msg:
nlmsg_free(msg);
err_put_device:
ib_device_put(device);
return ret;
}
static int nldev_stat_del_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
struct ib_device *device;
struct sk_buff *msg;
u32 index, port, qpn, cntn;
int ret;
ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, extack);
if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES] ||
!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX] ||
!tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID] ||
!tb[RDMA_NLDEV_ATTR_RES_LQPN])
return -EINVAL;
if (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP)
return -EINVAL;
index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
device = ib_device_get_by_index(sock_net(skb->sk), index);
if (!device)
return -EINVAL;
port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
if (!rdma_is_port_valid(device, port)) {
ret = -EINVAL;
goto err;
}
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg) {
ret = -ENOMEM;
goto err;
}
nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
RDMA_NLDEV_CMD_STAT_SET),
0, 0);
cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]);
qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]);
if (fill_nldev_handle(msg, device) ||
nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) ||
nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) ||
nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) {
ret = -EMSGSIZE;
goto err_fill;
}
ret = rdma_counter_unbind_qpn(device, port, qpn, cntn);
if (ret)
goto err_fill;
nlmsg_end(msg, nlh);
ib_device_put(device);
return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
err_fill:
nlmsg_free(msg);
err:
ib_device_put(device);
return ret;
}
static int stat_get_doit_default_counter(struct sk_buff *skb,
struct nlmsghdr *nlh,
struct netlink_ext_ack *extack,
struct nlattr *tb[])
{
struct rdma_hw_stats *stats;
struct nlattr *table_attr;
struct ib_device *device;
int ret, num_cnts, i;
struct sk_buff *msg;
u32 index, port;
u64 v;
if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
return -EINVAL;
index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
device = ib_device_get_by_index(sock_net(skb->sk), index);
if (!device)
return -EINVAL;
if (!device->ops.alloc_hw_port_stats || !device->ops.get_hw_stats) {
ret = -EINVAL;
goto err;
}
port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
stats = ib_get_hw_stats_port(device, port);
if (!stats) {
ret = -EINVAL;
goto err;
}
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg) {
ret = -ENOMEM;
goto err;
}
nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
RDMA_NLDEV_CMD_STAT_GET),
0, 0);
if (fill_nldev_handle(msg, device) ||
nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) {
ret = -EMSGSIZE;
goto err_msg;
}
mutex_lock(&stats->lock);
num_cnts = device->ops.get_hw_stats(device, stats, port, 0);
if (num_cnts < 0) {
ret = -EINVAL;
goto err_stats;
}
table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS);
if (!table_attr) {
ret = -EMSGSIZE;
goto err_stats;
}
for (i = 0; i < num_cnts; i++) {
if (test_bit(i, stats->is_disabled))
continue;
v = stats->value[i] +
rdma_counter_get_hwstat_value(device, port, i);
if (rdma_nl_stat_hwcounter_entry(msg,
stats->descs[i].name, v)) {
ret = -EMSGSIZE;
goto err_table;
}
}
nla_nest_end(msg, table_attr);
mutex_unlock(&stats->lock);
nlmsg_end(msg, nlh);
ib_device_put(device);
return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
err_table:
nla_nest_cancel(msg, table_attr);
err_stats:
mutex_unlock(&stats->lock);
err_msg:
nlmsg_free(msg);
err:
ib_device_put(device);
return ret;
}
static int stat_get_doit_qp(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack, struct nlattr *tb[])
{
static enum rdma_nl_counter_mode mode;
static enum rdma_nl_counter_mask mask;
struct ib_device *device;
struct sk_buff *msg;
u32 index, port;
int ret;
if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID])
return nldev_res_get_counter_doit(skb, nlh, extack);
if (!tb[RDMA_NLDEV_ATTR_STAT_MODE] ||
!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
return -EINVAL;
index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
device = ib_device_get_by_index(sock_net(skb->sk), index);
if (!device)
return -EINVAL;
port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
if (!rdma_is_port_valid(device, port)) {
ret = -EINVAL;
goto err;
}
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg) {
ret = -ENOMEM;
goto err;
}
nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
RDMA_NLDEV_CMD_STAT_GET),
0, 0);
ret = rdma_counter_get_mode(device, port, &mode, &mask);
if (ret)
goto err_msg;
if (fill_nldev_handle(msg, device) ||
nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) ||
nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, mode)) {
ret = -EMSGSIZE;
goto err_msg;
}
if ((mode == RDMA_COUNTER_MODE_AUTO) &&
nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK, mask)) {
ret = -EMSGSIZE;
goto err_msg;
}
nlmsg_end(msg, nlh);
ib_device_put(device);
return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
err_msg:
nlmsg_free(msg);
err:
ib_device_put(device);
return ret;
}
static int nldev_stat_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
int ret;
ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, extack);
if (ret)
return -EINVAL;
if (!tb[RDMA_NLDEV_ATTR_STAT_RES])
return stat_get_doit_default_counter(skb, nlh, extack, tb);
switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) {
case RDMA_NLDEV_ATTR_RES_QP:
ret = stat_get_doit_qp(skb, nlh, extack, tb);
break;
case RDMA_NLDEV_ATTR_RES_MR:
ret = res_get_common_doit(skb, nlh, extack, RDMA_RESTRACK_MR,
fill_stat_mr_entry);
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int nldev_stat_get_dumpit(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
int ret;
ret = nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, NULL);
if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES])
return -EINVAL;
switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) {
case RDMA_NLDEV_ATTR_RES_QP:
ret = nldev_res_get_counter_dumpit(skb, cb);
break;
case RDMA_NLDEV_ATTR_RES_MR:
ret = res_get_common_dumpit(skb, cb, RDMA_RESTRACK_MR,
fill_stat_mr_entry);
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int nldev_stat_get_counter_status_doit(struct sk_buff *skb,
struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX], *table, *entry;
struct rdma_hw_stats *stats;
struct ib_device *device;
struct sk_buff *msg;
u32 devid, port;
int ret, i;
ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, extack);
if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
!tb[RDMA_NLDEV_ATTR_PORT_INDEX])
return -EINVAL;
devid = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
device = ib_device_get_by_index(sock_net(skb->sk), devid);
if (!device)
return -EINVAL;
port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
if (!rdma_is_port_valid(device, port)) {
ret = -EINVAL;
goto err;
}
stats = ib_get_hw_stats_port(device, port);
if (!stats) {
ret = -EINVAL;
goto err;
}
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg) {
ret = -ENOMEM;
goto err;
}
nlh = nlmsg_put(
msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_STAT_GET_STATUS),
0, 0);
ret = -EMSGSIZE;
if (fill_nldev_handle(msg, device) ||
nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port))
goto err_msg;
table = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS);
if (!table)
goto err_msg;
mutex_lock(&stats->lock);
for (i = 0; i < stats->num_counters; i++) {
entry = nla_nest_start(msg,
RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY);
if (!entry)
goto err_msg_table;
if (nla_put_string(msg,
RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME,
stats->descs[i].name) ||
nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_INDEX, i))
goto err_msg_entry;
if ((stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) &&
(nla_put_u8(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_DYNAMIC,
!test_bit(i, stats->is_disabled))))
goto err_msg_entry;
nla_nest_end(msg, entry);
}
mutex_unlock(&stats->lock);
nla_nest_end(msg, table);
nlmsg_end(msg, nlh);
ib_device_put(device);
return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
err_msg_entry:
nla_nest_cancel(msg, entry);
err_msg_table:
mutex_unlock(&stats->lock);
nla_nest_cancel(msg, table);
err_msg:
nlmsg_free(msg);
err:
ib_device_put(device);
return ret;
}
static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
[RDMA_NLDEV_CMD_GET] = {
.doit = nldev_get_doit,
.dump = nldev_get_dumpit,
},
[RDMA_NLDEV_CMD_GET_CHARDEV] = {
.doit = nldev_get_chardev,
},
[RDMA_NLDEV_CMD_SET] = {
.doit = nldev_set_doit,
.flags = RDMA_NL_ADMIN_PERM,
},
[RDMA_NLDEV_CMD_NEWLINK] = {
.doit = nldev_newlink,
.flags = RDMA_NL_ADMIN_PERM,
},
[RDMA_NLDEV_CMD_DELLINK] = {
.doit = nldev_dellink,
.flags = RDMA_NL_ADMIN_PERM,
},
[RDMA_NLDEV_CMD_PORT_GET] = {
.doit = nldev_port_get_doit,
.dump = nldev_port_get_dumpit,
},
[RDMA_NLDEV_CMD_RES_GET] = {
.doit = nldev_res_get_doit,
.dump = nldev_res_get_dumpit,
},
[RDMA_NLDEV_CMD_RES_QP_GET] = {
.doit = nldev_res_get_qp_doit,
.dump = nldev_res_get_qp_dumpit,
},
[RDMA_NLDEV_CMD_RES_CM_ID_GET] = {
.doit = nldev_res_get_cm_id_doit,
.dump = nldev_res_get_cm_id_dumpit,
},
[RDMA_NLDEV_CMD_RES_CQ_GET] = {
.doit = nldev_res_get_cq_doit,
.dump = nldev_res_get_cq_dumpit,
},
[RDMA_NLDEV_CMD_RES_MR_GET] = {
.doit = nldev_res_get_mr_doit,
.dump = nldev_res_get_mr_dumpit,
},
[RDMA_NLDEV_CMD_RES_PD_GET] = {
.doit = nldev_res_get_pd_doit,
.dump = nldev_res_get_pd_dumpit,
},
[RDMA_NLDEV_CMD_RES_CTX_GET] = {
.doit = nldev_res_get_ctx_doit,
.dump = nldev_res_get_ctx_dumpit,
},
[RDMA_NLDEV_CMD_RES_SRQ_GET] = {
.doit = nldev_res_get_srq_doit,
.dump = nldev_res_get_srq_dumpit,
},
[RDMA_NLDEV_CMD_SYS_GET] = {
.doit = nldev_sys_get_doit,
},
[RDMA_NLDEV_CMD_SYS_SET] = {
.doit = nldev_set_sys_set_doit,
},
[RDMA_NLDEV_CMD_STAT_SET] = {
.doit = nldev_stat_set_doit,
.flags = RDMA_NL_ADMIN_PERM,
},
[RDMA_NLDEV_CMD_STAT_GET] = {
.doit = nldev_stat_get_doit,
.dump = nldev_stat_get_dumpit,
},
[RDMA_NLDEV_CMD_STAT_DEL] = {
.doit = nldev_stat_del_doit,
.flags = RDMA_NL_ADMIN_PERM,
},
[RDMA_NLDEV_CMD_RES_QP_GET_RAW] = {
.doit = nldev_res_get_qp_raw_doit,
.dump = nldev_res_get_qp_raw_dumpit,
.flags = RDMA_NL_ADMIN_PERM,
},
[RDMA_NLDEV_CMD_RES_CQ_GET_RAW] = {
.doit = nldev_res_get_cq_raw_doit,
.dump = nldev_res_get_cq_raw_dumpit,
.flags = RDMA_NL_ADMIN_PERM,
},
[RDMA_NLDEV_CMD_RES_MR_GET_RAW] = {
.doit = nldev_res_get_mr_raw_doit,
.dump = nldev_res_get_mr_raw_dumpit,
.flags = RDMA_NL_ADMIN_PERM,
},
[RDMA_NLDEV_CMD_STAT_GET_STATUS] = {
.doit = nldev_stat_get_counter_status_doit,
},
};
void __init nldev_init(void)
{
rdma_nl_register(RDMA_NL_NLDEV, nldev_cb_table);
}
void nldev_exit(void)
{
rdma_nl_unregister(RDMA_NL_NLDEV);
}
MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_NLDEV, 5);