path: root/drivers/infiniband/core/nldev.c

/*
 * 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 <net/netlink.h>
#include <rdma/rdma_cm.h>
#include <rdma/rdma_netlink.h>

#include "core_priv.h"
#include "cma_priv.h"

static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
	[RDMA_NLDEV_ATTR_DEV_INDEX]     = { .type = NLA_U32 },
	[RDMA_NLDEV_ATTR_DEV_NAME]	= { .type = NLA_NUL_STRING,
					    .len = IB_DEVICE_NAME_MAX - 1},
	[RDMA_NLDEV_ATTR_PORT_INDEX]	= { .type = NLA_U32 },
	[RDMA_NLDEV_ATTR_FW_VERSION]	= { .type = NLA_NUL_STRING,
					    .len = IB_FW_VERSION_NAME_MAX - 1},
	[RDMA_NLDEV_ATTR_NODE_GUID]	= { .type = NLA_U64 },
	[RDMA_NLDEV_ATTR_SYS_IMAGE_GUID] = { .type = NLA_U64 },
	[RDMA_NLDEV_ATTR_SUBNET_PREFIX]	= { .type = NLA_U64 },
	[RDMA_NLDEV_ATTR_LID]		= { .type = NLA_U32 },
	[RDMA_NLDEV_ATTR_SM_LID]	= { .type = NLA_U32 },
	[RDMA_NLDEV_ATTR_LMC]		= { .type = NLA_U8 },
	[RDMA_NLDEV_ATTR_PORT_STATE]	= { .type = NLA_U8 },
	[RDMA_NLDEV_ATTR_PORT_PHYS_STATE] = { .type = NLA_U8 },
	[RDMA_NLDEV_ATTR_DEV_NODE_TYPE] = { .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_NAME] = { .type = NLA_NUL_STRING,
					     .len = 16 },
	[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR] = { .type = NLA_U64 },
	[RDMA_NLDEV_ATTR_RES_QP]		= { .type = NLA_NESTED },
	[RDMA_NLDEV_ATTR_RES_QP_ENTRY]		= { .type = NLA_NESTED },
	[RDMA_NLDEV_ATTR_RES_LQPN]		= { .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_PATH_MIG_STATE] = { .type = NLA_U8 },
	[RDMA_NLDEV_ATTR_RES_TYPE]		= { .type = NLA_U8 },
	[RDMA_NLDEV_ATTR_RES_STATE]		= { .type = NLA_U8 },
	[RDMA_NLDEV_ATTR_RES_PID]		= { .type = NLA_U32 },
	[RDMA_NLDEV_ATTR_RES_KERN_NAME]		= { .type = NLA_NUL_STRING,
						    .len = TASK_COMM_LEN },
	[RDMA_NLDEV_ATTR_RES_CM_ID]		= { .type = NLA_NESTED },
	[RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY]	= { .type = NLA_NESTED },
	[RDMA_NLDEV_ATTR_RES_PS]		= { .type = NLA_U32 },
	[RDMA_NLDEV_ATTR_RES_SRC_ADDR]	= {
			.len = sizeof(struct __kernel_sockaddr_storage) },
	[RDMA_NLDEV_ATTR_RES_DST_ADDR]	= {
			.len = sizeof(struct __kernel_sockaddr_storage) },
	[RDMA_NLDEV_ATTR_RES_CQ]		= { .type = NLA_NESTED },
	[RDMA_NLDEV_ATTR_RES_CQ_ENTRY]		= { .type = NLA_NESTED },
	[RDMA_NLDEV_ATTR_RES_CQE]		= { .type = NLA_U32 },
	[RDMA_NLDEV_ATTR_RES_USECNT]		= { .type = NLA_U64 },
	[RDMA_NLDEV_ATTR_RES_POLL_CTX]		= { .type = NLA_U8 },
	[RDMA_NLDEV_ATTR_RES_MR]		= { .type = NLA_NESTED },
	[RDMA_NLDEV_ATTR_RES_MR_ENTRY]		= { .type = NLA_NESTED },
	[RDMA_NLDEV_ATTR_RES_RKEY]		= { .type = NLA_U32 },
	[RDMA_NLDEV_ATTR_RES_LKEY]		= { .type = NLA_U32 },
	[RDMA_NLDEV_ATTR_RES_IOVA]		= { .type = NLA_U64 },
	[RDMA_NLDEV_ATTR_RES_MRLEN]		= { .type = NLA_U64 },
	[RDMA_NLDEV_ATTR_RES_PD]		= { .type = NLA_NESTED },
	[RDMA_NLDEV_ATTR_RES_PD_ENTRY]		= { .type = NLA_NESTED },
	[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY]	= { .type = NLA_U32 },
	[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY] = { .type = NLA_U32 },
	[RDMA_NLDEV_ATTR_NDEV_INDEX]		= { .type = NLA_U32 },