![Leon Romanovsky](/assets/img/avatar_default.png)
Export the net device name and index to easily find connection between IB devices and relevant net devices. We also updated the comment regarding the devices without FW. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
1030 lines
27 KiB
C
1030 lines
27 KiB
C
/*
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* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/module.h>
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#include <linux/pid.h>
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#include <linux/pid_namespace.h>
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#include <net/netlink.h>
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#include <rdma/rdma_cm.h>
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#include <rdma/rdma_netlink.h>
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#include "core_priv.h"
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#include "cma_priv.h"
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static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
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[RDMA_NLDEV_ATTR_DEV_INDEX] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING,
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.len = IB_DEVICE_NAME_MAX - 1},
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[RDMA_NLDEV_ATTR_PORT_INDEX] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_FW_VERSION] = { .type = NLA_NUL_STRING,
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.len = IB_FW_VERSION_NAME_MAX - 1},
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[RDMA_NLDEV_ATTR_NODE_GUID] = { .type = NLA_U64 },
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[RDMA_NLDEV_ATTR_SYS_IMAGE_GUID] = { .type = NLA_U64 },
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[RDMA_NLDEV_ATTR_SUBNET_PREFIX] = { .type = NLA_U64 },
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[RDMA_NLDEV_ATTR_LID] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_SM_LID] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_LMC] = { .type = NLA_U8 },
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[RDMA_NLDEV_ATTR_PORT_STATE] = { .type = NLA_U8 },
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[RDMA_NLDEV_ATTR_PORT_PHYS_STATE] = { .type = NLA_U8 },
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[RDMA_NLDEV_ATTR_DEV_NODE_TYPE] = { .type = NLA_U8 },
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[RDMA_NLDEV_ATTR_RES_SUMMARY] = { .type = NLA_NESTED },
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[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY] = { .type = NLA_NESTED },
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[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME] = { .type = NLA_NUL_STRING,
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.len = 16 },
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[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR] = { .type = NLA_U64 },
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[RDMA_NLDEV_ATTR_RES_QP] = { .type = NLA_NESTED },
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[RDMA_NLDEV_ATTR_RES_QP_ENTRY] = { .type = NLA_NESTED },
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[RDMA_NLDEV_ATTR_RES_LQPN] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_RES_RQPN] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_RES_RQ_PSN] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_RES_SQ_PSN] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE] = { .type = NLA_U8 },
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[RDMA_NLDEV_ATTR_RES_TYPE] = { .type = NLA_U8 },
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[RDMA_NLDEV_ATTR_RES_STATE] = { .type = NLA_U8 },
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[RDMA_NLDEV_ATTR_RES_PID] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_RES_KERN_NAME] = { .type = NLA_NUL_STRING,
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.len = TASK_COMM_LEN },
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[RDMA_NLDEV_ATTR_RES_CM_ID] = { .type = NLA_NESTED },
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[RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY] = { .type = NLA_NESTED },
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[RDMA_NLDEV_ATTR_RES_PS] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_RES_SRC_ADDR] = {
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.len = sizeof(struct __kernel_sockaddr_storage) },
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[RDMA_NLDEV_ATTR_RES_DST_ADDR] = {
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.len = sizeof(struct __kernel_sockaddr_storage) },
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[RDMA_NLDEV_ATTR_RES_CQ] = { .type = NLA_NESTED },
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[RDMA_NLDEV_ATTR_RES_CQ_ENTRY] = { .type = NLA_NESTED },
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[RDMA_NLDEV_ATTR_RES_CQE] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_RES_USECNT] = { .type = NLA_U64 },
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[RDMA_NLDEV_ATTR_RES_POLL_CTX] = { .type = NLA_U8 },
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[RDMA_NLDEV_ATTR_RES_MR] = { .type = NLA_NESTED },
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[RDMA_NLDEV_ATTR_RES_MR_ENTRY] = { .type = NLA_NESTED },
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[RDMA_NLDEV_ATTR_RES_RKEY] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_RES_LKEY] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_RES_IOVA] = { .type = NLA_U64 },
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[RDMA_NLDEV_ATTR_RES_MRLEN] = { .type = NLA_U64 },
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[RDMA_NLDEV_ATTR_RES_PD] = { .type = NLA_NESTED },
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[RDMA_NLDEV_ATTR_RES_PD_ENTRY] = { .type = NLA_NESTED },
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[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_NDEV_INDEX] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_NDEV_NAME] = { .type = NLA_NUL_STRING,
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.len = IFNAMSIZ },
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};
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static int fill_nldev_handle(struct sk_buff *msg, struct ib_device *device)
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{
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if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DEV_INDEX, device->index))
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return -EMSGSIZE;
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if (nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_NAME, device->name))
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return -EMSGSIZE;
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return 0;
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}
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static int fill_dev_info(struct sk_buff *msg, struct ib_device *device)
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{
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char fw[IB_FW_VERSION_NAME_MAX];
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if (fill_nldev_handle(msg, device))
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return -EMSGSIZE;
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if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, rdma_end_port(device)))
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return -EMSGSIZE;
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BUILD_BUG_ON(sizeof(device->attrs.device_cap_flags) != sizeof(u64));
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if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS,
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device->attrs.device_cap_flags, 0))
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return -EMSGSIZE;
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ib_get_device_fw_str(device, fw);
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/* Device without FW has strlen(fw) = 0 */
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if (strlen(fw) && nla_put_string(msg, RDMA_NLDEV_ATTR_FW_VERSION, fw))
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return -EMSGSIZE;
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if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_NODE_GUID,
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be64_to_cpu(device->node_guid), 0))
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return -EMSGSIZE;
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if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SYS_IMAGE_GUID,
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be64_to_cpu(device->attrs.sys_image_guid), 0))
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return -EMSGSIZE;
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if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_NODE_TYPE, device->node_type))
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return -EMSGSIZE;
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return 0;
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}
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static int fill_port_info(struct sk_buff *msg,
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struct ib_device *device, u32 port,
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const struct net *net)
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{
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struct net_device *netdev = NULL;
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struct ib_port_attr attr;
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int ret;
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if (fill_nldev_handle(msg, device))
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return -EMSGSIZE;
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if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port))
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return -EMSGSIZE;
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ret = ib_query_port(device, port, &attr);
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if (ret)
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return ret;
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BUILD_BUG_ON(sizeof(attr.port_cap_flags) > sizeof(u64));
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if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS,
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(u64)attr.port_cap_flags, 0))
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return -EMSGSIZE;
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if (rdma_protocol_ib(device, port) &&
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nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SUBNET_PREFIX,
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attr.subnet_prefix, 0))
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return -EMSGSIZE;
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if (rdma_protocol_ib(device, port)) {
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if (nla_put_u32(msg, RDMA_NLDEV_ATTR_LID, attr.lid))
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return -EMSGSIZE;
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if (nla_put_u32(msg, RDMA_NLDEV_ATTR_SM_LID, attr.sm_lid))
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return -EMSGSIZE;
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if (nla_put_u8(msg, RDMA_NLDEV_ATTR_LMC, attr.lmc))
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return -EMSGSIZE;
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}
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if (nla_put_u8(msg, RDMA_NLDEV_ATTR_PORT_STATE, attr.state))
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return -EMSGSIZE;
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if (nla_put_u8(msg, RDMA_NLDEV_ATTR_PORT_PHYS_STATE, attr.phys_state))
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return -EMSGSIZE;
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if (device->get_netdev)
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netdev = device->get_netdev(device, port);
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if (netdev && net_eq(dev_net(netdev), net)) {
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ret = nla_put_u32(msg,
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RDMA_NLDEV_ATTR_NDEV_INDEX, netdev->ifindex);
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if (ret)
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goto out;
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ret = nla_put_string(msg,
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RDMA_NLDEV_ATTR_NDEV_NAME, netdev->name);
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}
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out:
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if (netdev)
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dev_put(netdev);
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return ret;
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}
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static int fill_res_info_entry(struct sk_buff *msg,
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const char *name, u64 curr)
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{
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struct nlattr *entry_attr;
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entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY);
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if (!entry_attr)
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return -EMSGSIZE;
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if (nla_put_string(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME, name))
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goto err;
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if (nla_put_u64_64bit(msg,
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RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR, curr, 0))
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goto err;
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nla_nest_end(msg, entry_attr);
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return 0;
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err:
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nla_nest_cancel(msg, entry_attr);
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return -EMSGSIZE;
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}
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static int fill_res_info(struct sk_buff *msg, struct ib_device *device)
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{
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static const char * const names[RDMA_RESTRACK_MAX] = {
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[RDMA_RESTRACK_PD] = "pd",
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[RDMA_RESTRACK_CQ] = "cq",
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[RDMA_RESTRACK_QP] = "qp",
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[RDMA_RESTRACK_CM_ID] = "cm_id",
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[RDMA_RESTRACK_MR] = "mr",
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};
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struct rdma_restrack_root *res = &device->res;
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struct nlattr *table_attr;
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int ret, i, curr;
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if (fill_nldev_handle(msg, device))
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return -EMSGSIZE;
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table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_SUMMARY);
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if (!table_attr)
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return -EMSGSIZE;
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for (i = 0; i < RDMA_RESTRACK_MAX; i++) {
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if (!names[i])
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continue;
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curr = rdma_restrack_count(res, i, task_active_pid_ns(current));
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ret = fill_res_info_entry(msg, names[i], curr);
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if (ret)
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goto err;
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}
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nla_nest_end(msg, table_attr);
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return 0;
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err:
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nla_nest_cancel(msg, table_attr);
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return ret;
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}
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static int fill_res_name_pid(struct sk_buff *msg,
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struct rdma_restrack_entry *res)
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{
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/*
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* For user resources, user is should read /proc/PID/comm to get the
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* name of the task file.
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*/
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if (rdma_is_kernel_res(res)) {
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if (nla_put_string(msg, RDMA_NLDEV_ATTR_RES_KERN_NAME,
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res->kern_name))
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return -EMSGSIZE;
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} else {
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if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PID,
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task_pid_vnr(res->task)))
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return -EMSGSIZE;
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}
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return 0;
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}
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static int fill_res_qp_entry(struct sk_buff *msg, struct netlink_callback *cb,
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struct rdma_restrack_entry *res, uint32_t port)
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{
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struct ib_qp *qp = container_of(res, struct ib_qp, res);
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struct ib_qp_init_attr qp_init_attr;
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struct nlattr *entry_attr;
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struct ib_qp_attr qp_attr;
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int ret;
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ret = ib_query_qp(qp, &qp_attr, 0, &qp_init_attr);
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if (ret)
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return ret;
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if (port && port != qp_attr.port_num)
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return 0;
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entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP_ENTRY);
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if (!entry_attr)
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goto out;
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/* In create_qp() port is not set yet */
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if (qp_attr.port_num &&
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nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, qp_attr.port_num))
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goto err;
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if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qp->qp_num))
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goto err;
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if (qp->qp_type == IB_QPT_RC || qp->qp_type == IB_QPT_UC) {
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if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RQPN,
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qp_attr.dest_qp_num))
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goto err;
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if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RQ_PSN,
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qp_attr.rq_psn))
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goto err;
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}
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if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_SQ_PSN, qp_attr.sq_psn))
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goto err;
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if (qp->qp_type == IB_QPT_RC || qp->qp_type == IB_QPT_UC ||
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qp->qp_type == IB_QPT_XRC_INI || qp->qp_type == IB_QPT_XRC_TGT) {
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if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE,
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qp_attr.path_mig_state))
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goto err;
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}
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if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, qp->qp_type))
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goto err;
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if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_STATE, qp_attr.qp_state))
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goto err;
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if (fill_res_name_pid(msg, res))
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goto err;
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nla_nest_end(msg, entry_attr);
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return 0;
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err:
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nla_nest_cancel(msg, entry_attr);
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out:
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return -EMSGSIZE;
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}
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static int fill_res_cm_id_entry(struct sk_buff *msg,
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struct netlink_callback *cb,
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struct rdma_restrack_entry *res, uint32_t port)
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{
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struct rdma_id_private *id_priv =
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container_of(res, struct rdma_id_private, res);
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struct rdma_cm_id *cm_id = &id_priv->id;
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struct nlattr *entry_attr;
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if (port && port != cm_id->port_num)
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return 0;
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|
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entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY);
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if (!entry_attr)
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goto out;
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|
|
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if (cm_id->port_num &&
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nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, cm_id->port_num))
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goto err;
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if (id_priv->qp_num) {
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if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, id_priv->qp_num))
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goto err;
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if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, cm_id->qp_type))
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goto err;
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}
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|
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if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PS, cm_id->ps))
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goto err;
|
|
|
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if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_STATE, id_priv->state))
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goto err;
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if (cm_id->route.addr.src_addr.ss_family &&
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nla_put(msg, RDMA_NLDEV_ATTR_RES_SRC_ADDR,
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sizeof(cm_id->route.addr.src_addr),
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&cm_id->route.addr.src_addr))
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goto err;
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if (cm_id->route.addr.dst_addr.ss_family &&
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nla_put(msg, RDMA_NLDEV_ATTR_RES_DST_ADDR,
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sizeof(cm_id->route.addr.dst_addr),
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&cm_id->route.addr.dst_addr))
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goto err;
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if (fill_res_name_pid(msg, res))
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goto err;
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nla_nest_end(msg, entry_attr);
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return 0;
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|
|
|
err:
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nla_nest_cancel(msg, entry_attr);
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out:
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return -EMSGSIZE;
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}
|
|
|
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static int fill_res_cq_entry(struct sk_buff *msg, struct netlink_callback *cb,
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struct rdma_restrack_entry *res, uint32_t port)
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{
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struct ib_cq *cq = container_of(res, struct ib_cq, res);
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struct nlattr *entry_attr;
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|
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entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_CQ_ENTRY);
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if (!entry_attr)
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goto out;
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|
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if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQE, cq->cqe))
|
|
goto err;
|
|
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT,
|
|
atomic_read(&cq->usecnt), 0))
|
|
goto err;
|
|
|
|
/* 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))
|
|
goto err;
|
|
|
|
if (fill_res_name_pid(msg, res))
|
|
goto err;
|
|
|
|
nla_nest_end(msg, entry_attr);
|
|
return 0;
|
|
|
|
err:
|
|
nla_nest_cancel(msg, entry_attr);
|
|
out:
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int fill_res_mr_entry(struct sk_buff *msg, struct netlink_callback *cb,
|
|
struct rdma_restrack_entry *res, uint32_t port)
|
|
{
|
|
struct ib_mr *mr = container_of(res, struct ib_mr, res);
|
|
struct nlattr *entry_attr;
|
|
|
|
entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_MR_ENTRY);
|
|
if (!entry_attr)
|
|
goto out;
|
|
|
|
if (netlink_capable(cb->skb, CAP_NET_ADMIN)) {
|
|
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RKEY, mr->rkey))
|
|
goto err;
|
|
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LKEY, mr->lkey))
|
|
goto err;
|
|
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_IOVA,
|
|
mr->iova, 0))
|
|
goto err;
|
|
}
|
|
|
|
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_MRLEN, mr->length, 0))
|
|
goto err;
|
|
|
|
if (fill_res_name_pid(msg, res))
|
|
goto err;
|
|
|
|
nla_nest_end(msg, entry_attr);
|
|
return 0;
|
|
|
|
err:
|
|
nla_nest_cancel(msg, entry_attr);
|
|
out:
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int fill_res_pd_entry(struct sk_buff *msg, struct netlink_callback *cb,
|
|
struct rdma_restrack_entry *res, uint32_t port)
|
|
{
|
|
struct ib_pd *pd = container_of(res, struct ib_pd, res);
|
|
struct nlattr *entry_attr;
|
|
|
|
entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_PD_ENTRY);
|
|
if (!entry_attr)
|
|
goto out;
|
|
|
|
if (netlink_capable(cb->skb, 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), 0))
|
|
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 (fill_res_name_pid(msg, res))
|
|
goto err;
|
|
|
|
nla_nest_end(msg, entry_attr);
|
|
return 0;
|
|
|
|
err:
|
|
nla_nest_cancel(msg, entry_attr);
|
|
out:
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
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(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(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);
|
|
|
|
put_device(&device->dev);
|
|
return rdma_nl_unicast(msg, NETLINK_CB(skb).portid);
|
|
|
|
err_free:
|
|
nlmsg_free(msg);
|
|
err:
|
|
put_device(&device->dev);
|
|
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 lists_rwsem
|
|
*/
|
|
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(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(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);
|
|
put_device(&device->dev);
|
|
|
|
return rdma_nl_unicast(msg, NETLINK_CB(skb).portid);
|
|
|
|
err_free:
|
|
nlmsg_free(msg);
|
|
err:
|
|
put_device(&device->dev);
|
|
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;
|
|
u32 p;
|
|
|
|
err = nlmsg_parse(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(ifindex);
|
|
if (!device)
|
|
return -EINVAL;
|
|
|
|
for (p = rdma_start_port(device); p <= rdma_end_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:
|
|
put_device(&device->dev);
|
|
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(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(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);
|
|
put_device(&device->dev);
|
|
return rdma_nl_unicast(msg, NETLINK_CB(skb).portid);
|
|
|
|
err_free:
|
|
nlmsg_free(msg);
|
|
err:
|
|
put_device(&device->dev);
|
|
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 {
|
|
int (*fill_res_func)(struct sk_buff *msg, struct netlink_callback *cb,
|
|
struct rdma_restrack_entry *res, u32 port);
|
|
enum rdma_nldev_attr nldev_attr;
|
|
enum rdma_nldev_command nldev_cmd;
|
|
};
|
|
|
|
static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = {
|
|
[RDMA_RESTRACK_QP] = {
|
|
.fill_res_func = fill_res_qp_entry,
|
|
.nldev_cmd = RDMA_NLDEV_CMD_RES_QP_GET,
|
|
.nldev_attr = RDMA_NLDEV_ATTR_RES_QP,
|
|
},
|
|
[RDMA_RESTRACK_CM_ID] = {
|
|
.fill_res_func = fill_res_cm_id_entry,
|
|
.nldev_cmd = RDMA_NLDEV_CMD_RES_CM_ID_GET,
|
|
.nldev_attr = RDMA_NLDEV_ATTR_RES_CM_ID,
|
|
},
|
|
[RDMA_RESTRACK_CQ] = {
|
|
.fill_res_func = fill_res_cq_entry,
|
|
.nldev_cmd = RDMA_NLDEV_CMD_RES_CQ_GET,
|
|
.nldev_attr = RDMA_NLDEV_ATTR_RES_CQ,
|
|
},
|
|
[RDMA_RESTRACK_MR] = {
|
|
.fill_res_func = fill_res_mr_entry,
|
|
.nldev_cmd = RDMA_NLDEV_CMD_RES_MR_GET,
|
|
.nldev_attr = RDMA_NLDEV_ATTR_RES_MR,
|
|
},
|
|
[RDMA_RESTRACK_PD] = {
|
|
.fill_res_func = fill_res_pd_entry,
|
|
.nldev_cmd = RDMA_NLDEV_CMD_RES_PD_GET,
|
|
.nldev_attr = RDMA_NLDEV_ATTR_RES_PD,
|
|
},
|
|
};
|
|
|
|
static int res_get_common_dumpit(struct sk_buff *skb,
|
|
struct netlink_callback *cb,
|
|
enum rdma_restrack_type res_type)
|
|
{
|
|
const struct nldev_fill_res_entry *fe = &fill_entries[res_type];
|
|
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
|
|
struct rdma_restrack_entry *res;
|
|
int err, ret = 0, idx = 0;
|
|
struct nlattr *table_attr;
|
|
struct ib_device *device;
|
|
int start = cb->args[0];
|
|
struct nlmsghdr *nlh;
|
|
u32 index, port = 0;
|
|
bool filled = false;
|
|
|
|
err = nlmsg_parse(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(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, fe->nldev_cmd),
|
|
0, NLM_F_MULTI);
|
|
|
|
if (fill_nldev_handle(skb, device)) {
|
|
ret = -EMSGSIZE;
|
|
goto err;
|
|
}
|
|
|
|
table_attr = nla_nest_start(skb, fe->nldev_attr);
|
|
if (!table_attr) {
|
|
ret = -EMSGSIZE;
|
|
goto err;
|
|
}
|
|
|
|
down_read(&device->res.rwsem);
|
|
hash_for_each_possible(device->res.hash, res, node, res_type) {
|
|
if (idx < start)
|
|
goto next;
|
|
|
|
if ((rdma_is_kernel_res(res) &&
|
|
task_active_pid_ns(current) != &init_pid_ns) ||
|
|
(!rdma_is_kernel_res(res) && task_active_pid_ns(current) !=
|
|
task_active_pid_ns(res->task)))
|
|
/*
|
|
* 1. Kern resources should be visible in init
|
|
* namspace only
|
|
* 2. Present only resources visible in the current
|
|
* namespace
|
|
*/
|
|
goto next;
|
|
|
|
if (!rdma_restrack_get(res))
|
|
/*
|
|
* Resource is under release now, but we are not
|
|
* relesing lock now, so it will be released in
|
|
* our next pass, once we will get ->next pointer.
|
|
*/
|
|
goto next;
|
|
|
|
filled = true;
|
|
|
|
up_read(&device->res.rwsem);
|
|
ret = fe->fill_res_func(skb, cb, res, port);
|
|
down_read(&device->res.rwsem);
|
|
/*
|
|
* Return resource back, but it won't be released till
|
|
* the &device->res.rwsem will be released for write.
|
|
*/
|
|
rdma_restrack_put(res);
|
|
|
|
if (ret == -EMSGSIZE)
|
|
/*
|
|
* There is a chance to optimize here.
|
|
* It can be done by using list_prepare_entry
|
|
* and list_for_each_entry_continue afterwards.
|
|
*/
|
|
break;
|
|
if (ret)
|
|
goto res_err;
|
|
next: idx++;
|
|
}
|
|
up_read(&device->res.rwsem);
|
|
|
|
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;
|
|
|
|
put_device(&device->dev);
|
|
return skb->len;
|
|
|
|
res_err:
|
|
nla_nest_cancel(skb, table_attr);
|
|
up_read(&device->res.rwsem);
|
|
|
|
err:
|
|
nlmsg_cancel(skb, nlh);
|
|
|
|
err_index:
|
|
put_device(&device->dev);
|
|
return ret;
|
|
}
|
|
|
|
static int nldev_res_get_qp_dumpit(struct sk_buff *skb,
|
|
struct netlink_callback *cb)
|
|
{
|
|
return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_QP);
|
|
}
|
|
|
|
static int nldev_res_get_cm_id_dumpit(struct sk_buff *skb,
|
|
struct netlink_callback *cb)
|
|
{
|
|
return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_CM_ID);
|
|
}
|
|
|
|
static int nldev_res_get_cq_dumpit(struct sk_buff *skb,
|
|
struct netlink_callback *cb)
|
|
{
|
|
return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_CQ);
|
|
}
|
|
|
|
static int nldev_res_get_mr_dumpit(struct sk_buff *skb,
|
|
struct netlink_callback *cb)
|
|
{
|
|
return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_MR);
|
|
}
|
|
|
|
static int nldev_res_get_pd_dumpit(struct sk_buff *skb,
|
|
struct netlink_callback *cb)
|
|
{
|
|
return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_PD);
|
|
}
|
|
|
|
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_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] = {
|
|
.dump = nldev_res_get_qp_dumpit,
|
|
/*
|
|
* .doit is not implemented yet for two reasons:
|
|
* 1. It is not needed yet.
|
|
* 2. There is a need to provide identifier, while it is easy
|
|
* for the QPs (device index + port index + LQPN), it is not
|
|
* the case for the rest of resources (PD and CQ). Because it
|
|
* is better to provide similar interface for all resources,
|
|
* let's wait till we will have other resources implemented
|
|
* too.
|
|
*/
|
|
},
|
|
[RDMA_NLDEV_CMD_RES_CM_ID_GET] = {
|
|
.dump = nldev_res_get_cm_id_dumpit,
|
|
},
|
|
[RDMA_NLDEV_CMD_RES_CQ_GET] = {
|
|
.dump = nldev_res_get_cq_dumpit,
|
|
},
|
|
[RDMA_NLDEV_CMD_RES_MR_GET] = {
|
|
.dump = nldev_res_get_mr_dumpit,
|
|
},
|
|
[RDMA_NLDEV_CMD_RES_PD_GET] = {
|
|
.dump = nldev_res_get_pd_dumpit,
|
|
},
|
|
};
|
|
|
|
void __init nldev_init(void)
|
|
{
|
|
rdma_nl_register(RDMA_NL_NLDEV, nldev_cb_table);
|
|
}
|
|
|
|
void __exit nldev_exit(void)
|
|
{
|
|
rdma_nl_unregister(RDMA_NL_NLDEV);
|
|
}
|
|
|
|
MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_NLDEV, 5);
|