| /* |
| * 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_CTXN] = { .type = NLA_U32 }, |
| [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_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_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 }, |
| }; |
| |
| 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; |
| u8 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", |
| }; |
| |
| 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 bool fill_res_entry(struct ib_device *dev, struct sk_buff *msg, |
| struct rdma_restrack_entry *res) |
| { |
| if (!dev->ops.fill_res_entry) |
| return false; |
| return dev->ops.fill_res_entry(msg, res); |
| } |
| |
| static bool fill_stat_entry(struct ib_device *dev, struct sk_buff *msg, |
| struct rdma_restrack_entry *res) |
| { |
| if (!dev->ops.fill_stat_entry) |
| return false; |
| return dev->ops.fill_stat_entry(msg, res); |
| } |
| |
| 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; |
| 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 (port && port != qp_attr.port_num) |
| return -EAGAIN; |
| |
| /* In create_qp() port is not set yet */ |
| if (qp_attr.port_num && |
| nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, qp_attr.port_num)) |
| goto err; |
| |
| if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qp->qp_num)) |
| goto err; |
| 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 (!rdma_is_kernel_res(res) && |
| nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, qp->pd->res.id)) |
| goto err; |
| |
| if (fill_res_name_pid(msg, res)) |
| goto err; |
| |
| if (fill_res_entry(dev, msg, res)) |
| goto err; |
| |
| return 0; |
| |
| err: return -EMSGSIZE; |
| } |
| |
| 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 0; |
| |
| 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 (fill_res_entry(dev, msg, res)) |
| goto err; |
| |
| 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)) |
| goto err; |
| if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT, |
| atomic_read(&cq->usecnt), RDMA_NLDEV_ATTR_PAD)) |
| 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 (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_DIM, (cq->dim != NULL))) |
| goto err; |
| |
| if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQN, res->id)) |
| goto err; |
| if (!rdma_is_kernel_res(res) && |
| nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN, |
| cq->uobject->uevent.uobject.context->res.id)) |
| goto err; |
| |
| if (fill_res_name_pid(msg, res)) |
| goto err; |
| |
| if (fill_res_entry(dev, msg, res)) |
| goto err; |
| |
| return 0; |
| |
| err: return -EMSGSIZE; |
| } |
| |
| 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)) |
| 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_MRLEN, mr->length, |
| RDMA_NLDEV_ATTR_PAD)) |
| goto err; |
| |
| if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_MRN, res->id)) |
| goto err; |
| |
| if (!rdma_is_kernel_res(res) && |
| nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, mr->pd->res.id)) |
| goto err; |
| |
| if (fill_res_name_pid(msg, res)) |
| goto err; |
| |
| if (fill_res_entry(dev, msg, res)) |
| goto err; |
| |
| return 0; |
| |
| err: return -EMSGSIZE; |
| } |
| |
| 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); |
| struct ib_device *dev = pd->device; |
| |
| 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; |
| |
| if (fill_res_name_pid(msg, res)) |
| goto err; |
| |
| if (fill_res_entry(dev, msg, res)) |
| goto err; |
| |
| return 0; |
| |
| 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; |
| |
| 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); |
| |
| 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->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW)) |
| continue; |
| |
| 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 (fill_stat_entry(dev, msg, res)) |
| goto err; |
| |
| 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; |
| |
| for (i = 0; i < st->num_counters; i++) |
| if (rdma_nl_stat_hwcounter_entry(msg, st->names[i], st->value[i])) |
| goto err; |
| |
| nla_nest_end(msg, table_attr); |
| return 0; |
| |
| err: |
| 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_res_name_pid(msg, &counter->res) || |
| 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_strlcpy(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; |
| enum rdma_nldev_command nldev_cmd; |
| 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_cmd = RDMA_NLDEV_CMD_RES_QP_GET, |
| .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_cmd = RDMA_NLDEV_CMD_RES_CM_ID_GET, |
| .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_cmd = RDMA_NLDEV_CMD_RES_CQ_GET, |
| .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_cmd = RDMA_NLDEV_CMD_RES_MR_GET, |
| .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_cmd = RDMA_NLDEV_CMD_RES_PD_GET, |
| .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_cmd = RDMA_NLDEV_CMD_STAT_GET, |
| .nldev_attr = RDMA_NLDEV_ATTR_STAT_COUNTER, |
| .entry = RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY, |
| .id = RDMA_NLDEV_ATTR_STAT_COUNTER_ID, |
| }, |
| }; |
| |
| 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, fe->nldev_cmd), |
| 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, fe->nldev_cmd), |
| 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(cm_id, RDMA_RESTRACK_CM_ID); |
| RES_GET_FUNCS(cq, RDMA_RESTRACK_CQ); |
| RES_GET_FUNCS(pd, RDMA_RESTRACK_PD); |
| RES_GET_FUNCS(mr, RDMA_RESTRACK_MR); |
| RES_GET_FUNCS(counter, RDMA_RESTRACK_COUNTER); |
| |
| 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_strlcpy(ibdev_name, tb[RDMA_NLDEV_ATTR_DEV_NAME], |
| sizeof(ibdev_name)); |
| if (strchr(ibdev_name, '%') || strlen(ibdev_name) == 0) |
| return -EINVAL; |
| |
| nla_strlcpy(type, tb[RDMA_NLDEV_ATTR_LINK_TYPE], sizeof(type)); |
| nla_strlcpy(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.device_cap_flags & IB_DEVICE_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_strlcpy(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; |
| } |
| 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_doit(struct sk_buff *skb, struct nlmsghdr *nlh, |
| struct netlink_ext_ack *extack) |
| { |
| u32 index, port, mode, mask = 0, qpn, cntn = 0; |
| struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; |
| struct ib_device *device; |
| struct sk_buff *msg; |
| int ret; |
| |
| ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, |
| nldev_policy, extack); |
| /* Currently only counter for QP is supported */ |
| 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_MODE]) |
| 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); |
| |
| 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]); |
| |
| ret = rdma_counter_set_auto_mode(device, port, |
| mask ? true : false, mask); |
| if (ret) |
| goto err_msg; |
| } else { |
| if (!tb[RDMA_NLDEV_ATTR_RES_LQPN]) |
| goto err_msg; |
| 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); |
| } else { |
| ret = rdma_counter_bind_qpn_alloc(device, port, |
| qpn, &cntn); |
| } |
| 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_COUNTER_ID, cntn) || |
| nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) { |
| ret = -EMSGSIZE; |
| 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: |
| rdma_counter_unbind_qpn(device, port, qpn, cntn); |
| err_msg: |
| nlmsg_free(msg); |
| err: |
| 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_stats || !device->ops.get_hw_stats) { |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| 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); |
| |
| if (fill_nldev_handle(msg, device) || |
| nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) { |
| ret = -EMSGSIZE; |
| goto err_msg; |
| } |
| |
| stats = device->port_data ? device->port_data[port].hw_stats : NULL; |
| if (stats == NULL) { |
| ret = -EINVAL; |
| 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++) { |
| v = stats->value[i] + |
| rdma_counter_get_hwstat_value(device, port, i); |
| if (rdma_nl_stat_hwcounter_entry(msg, stats->names[i], 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 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_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, |
| }, |
| }; |
| |
| 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); |
