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- /*
- * 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_RAW] = { .type = NLA_BINARY },
- [RDMA_NLDEV_ATTR_RES_RKEY] = { .type = NLA_U32 },
- [RDMA_NLDEV_ATTR_RES_RQPN] = { .type = NLA_U32 },
- [RDMA_NLDEV_ATTR_RES_RQ_PSN] = { .type = NLA_U32 },
- [RDMA_NLDEV_ATTR_RES_SQ_PSN] = { .type = NLA_U32 },
- [RDMA_NLDEV_ATTR_RES_SRC_ADDR] = {
- .len = sizeof(struct __kernel_sockaddr_storage) },
- [RDMA_NLDEV_ATTR_RES_STATE] = { .type = NLA_U8 },
- [RDMA_NLDEV_ATTR_RES_SUMMARY] = { .type = NLA_NESTED },
- [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY] = { .type = NLA_NESTED },
- [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR]= { .type = NLA_U64 },
- [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME]= { .type = NLA_NUL_STRING,
- .len = RDMA_NLDEV_ATTR_EMPTY_STRING },
- [RDMA_NLDEV_ATTR_RES_TYPE] = { .type = NLA_U8 },
- [RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]= { .type = NLA_U32 },
- [RDMA_NLDEV_ATTR_RES_USECNT] = { .type = NLA_U64 },
- [RDMA_NLDEV_ATTR_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 int fill_res_qp_entry_query(struct sk_buff *msg,
- struct rdma_restrack_entry *res,
- struct ib_device *dev,
- struct ib_qp *qp)
- {
- struct ib_qp_init_attr qp_init_attr;
- struct ib_qp_attr qp_attr;
- int ret;
- ret = ib_query_qp(qp, &qp_attr, 0, &qp_init_attr);
- if (ret)
- return ret;
- if (qp->qp_type == IB_QPT_RC || qp->qp_type == IB_QPT_UC) {
- if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RQPN,
- qp_attr.dest_qp_num))
- goto err;
- if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RQ_PSN,
- qp_attr.rq_psn))
- goto err;
- }
- if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_SQ_PSN, qp_attr.sq_psn))
- goto err;
- if (qp->qp_type == IB_QPT_RC || qp->qp_type == IB_QPT_UC ||
- qp->qp_type == IB_QPT_XRC_INI || qp->qp_type == IB_QPT_XRC_TGT) {
- if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE,
- qp_attr.path_mig_state))
- goto err;
- }
- if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, qp->qp_type))
- goto err;
- if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_STATE, qp_attr.qp_state))
- goto err;
- if (dev->ops.fill_res_qp_entry)
- return dev->ops.fill_res_qp_entry(msg, qp);
- return 0;
- err: return -EMSGSIZE;
- }
- static int fill_res_qp_entry(struct sk_buff *msg, bool has_cap_net_admin,
- struct rdma_restrack_entry *res, uint32_t port)
- {
- struct ib_qp *qp = container_of(res, struct ib_qp, res);
- struct ib_device *dev = qp->device;
- int ret;
- if (port && port != qp->port)
- return -EAGAIN;
- /* In create_qp() port is not set yet */
- if (qp->port && nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, qp->port))
- return -EINVAL;
- ret = nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qp->qp_num);
- if (ret)
- return -EMSGSIZE;
- if (!rdma_is_kernel_res(res) &&
- nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, qp->pd->res.id))
- return -EMSGSIZE;
- ret = fill_res_name_pid(msg, res);
- if (ret)
- return -EMSGSIZE;
- return fill_res_qp_entry_query(msg, res, dev, qp);
- }
- static int fill_res_qp_raw_entry(struct sk_buff *msg, bool has_cap_net_admin,
- struct rdma_restrack_entry *res, uint32_t port)
- {
- struct ib_qp *qp = container_of(res, struct ib_qp, res);
- struct ib_device *dev = qp->device;
- if (port && port != qp->port)
- return -EAGAIN;
- if (!dev->ops.fill_res_qp_entry_raw)
- return -EINVAL;
- return dev->ops.fill_res_qp_entry_raw(msg, qp);
- }
- static int fill_res_cm_id_entry(struct sk_buff *msg, bool has_cap_net_admin,
- struct rdma_restrack_entry *res, uint32_t port)
- {
- struct rdma_id_private *id_priv =
- container_of(res, struct rdma_id_private, res);
- struct ib_device *dev = id_priv->id.device;
- struct rdma_cm_id *cm_id = &id_priv->id;
- if (port && port != cm_id->port_num)
- return 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 (dev->ops.fill_res_cm_id_entry)
- return dev->ops.fill_res_cm_id_entry(msg, cm_id);
- return 0;
- err: return -EMSGSIZE;
- }
- static int fill_res_cq_entry(struct sk_buff *msg, bool has_cap_net_admin,
- struct rdma_restrack_entry *res, uint32_t port)
- {
- struct ib_cq *cq = container_of(res, struct ib_cq, res);
- struct ib_device *dev = cq->device;
- if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQE, cq->cqe))
- return -EMSGSIZE;
- if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT,
- atomic_read(&cq->usecnt), RDMA_NLDEV_ATTR_PAD))
- return -EMSGSIZE;
- /* Poll context is only valid for kernel CQs */
- if (rdma_is_kernel_res(res) &&
- nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_POLL_CTX, cq->poll_ctx))
- return -EMSGSIZE;
- if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_DIM, (cq->dim != NULL)))
- return -EMSGSIZE;
- if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQN, res->id))
- return -EMSGSIZE;
- if (!rdma_is_kernel_res(res) &&
- nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN,
- cq->uobject->uevent.uobject.context->res.id))
- return -EMSGSIZE;
- if (fill_res_name_pid(msg, res))
- return -EMSGSIZE;
- return (dev->ops.fill_res_cq_entry) ?
- dev->ops.fill_res_cq_entry(msg, cq) : 0;
- }
- static int fill_res_cq_raw_entry(struct sk_buff *msg, bool has_cap_net_admin,
- struct rdma_restrack_entry *res, uint32_t port)
- {
- struct ib_cq *cq = container_of(res, struct ib_cq, res);
- struct ib_device *dev = cq->device;
- if (!dev->ops.fill_res_cq_entry_raw)
- return -EINVAL;
- return dev->ops.fill_res_cq_entry_raw(msg, cq);
- }
- static int fill_res_mr_entry(struct sk_buff *msg, bool has_cap_net_admin,
- struct rdma_restrack_entry *res, uint32_t port)
- {
- struct ib_mr *mr = container_of(res, struct ib_mr, res);
- struct ib_device *dev = mr->pd->device;
- if (has_cap_net_admin) {
- if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RKEY, mr->rkey))
- return -EMSGSIZE;
- if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LKEY, mr->lkey))
- return -EMSGSIZE;
- }
- if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_MRLEN, mr->length,
- RDMA_NLDEV_ATTR_PAD))
- return -EMSGSIZE;
- if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_MRN, res->id))
- return -EMSGSIZE;
- if (!rdma_is_kernel_res(res) &&
- nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, mr->pd->res.id))
- return -EMSGSIZE;
- if (fill_res_name_pid(msg, res))
- return -EMSGSIZE;
- return (dev->ops.fill_res_mr_entry) ?
- dev->ops.fill_res_mr_entry(msg, mr) :
- 0;
- }
- static int fill_res_mr_raw_entry(struct sk_buff *msg, bool has_cap_net_admin,
- struct rdma_restrack_entry *res, uint32_t port)
- {
- struct ib_mr *mr = container_of(res, struct ib_mr, res);
- struct ib_device *dev = mr->pd->device;
- if (!dev->ops.fill_res_mr_entry_raw)
- return -EINVAL;
- return dev->ops.fill_res_mr_entry_raw(msg, mr);
- }
- static int fill_res_pd_entry(struct sk_buff *msg, bool has_cap_net_admin,
- struct rdma_restrack_entry *res, uint32_t port)
- {
- struct ib_pd *pd = container_of(res, struct ib_pd, res);
- if (has_cap_net_admin) {
- if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY,
- pd->local_dma_lkey))
- goto err;
- if ((pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY) &&
- nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY,
- pd->unsafe_global_rkey))
- goto err;
- }
- if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT,
- atomic_read(&pd->usecnt), RDMA_NLDEV_ATTR_PAD))
- goto err;
- if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, res->id))
- goto err;
- if (!rdma_is_kernel_res(res) &&
- nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN,
- pd->uobject->context->res.id))
- goto err;
- return fill_res_name_pid(msg, res);
- err: return -EMSGSIZE;
- }
- static int fill_stat_counter_mode(struct sk_buff *msg,
- struct rdma_counter *counter)
- {
- struct rdma_counter_mode *m = &counter->mode;
- if (nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, m->mode))
- return -EMSGSIZE;
- if (m->mode == RDMA_COUNTER_MODE_AUTO) {
- if ((m->mask & RDMA_COUNTER_MASK_QP_TYPE) &&
- nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, m->param.qp_type))
- return -EMSGSIZE;
- if ((m->mask & RDMA_COUNTER_MASK_PID) &&
- fill_res_name_pid(msg, &counter->res))
- return -EMSGSIZE;
- }
- return 0;
- }
- static int fill_stat_counter_qp_entry(struct sk_buff *msg, u32 qpn)
- {
- struct nlattr *entry_attr;
- entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP_ENTRY);
- if (!entry_attr)
- return -EMSGSIZE;
- if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn))
- goto err;
- nla_nest_end(msg, entry_attr);
- return 0;
- err:
- nla_nest_cancel(msg, entry_attr);
- return -EMSGSIZE;
- }
- static int fill_stat_counter_qps(struct sk_buff *msg,
- struct rdma_counter *counter)
- {
- struct rdma_restrack_entry *res;
- struct rdma_restrack_root *rt;
- struct nlattr *table_attr;
- struct ib_qp *qp = NULL;
- unsigned long id = 0;
- int ret = 0;
- table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP);
- rt = &counter->device->res[RDMA_RESTRACK_QP];
- xa_lock(&rt->xa);
- xa_for_each(&rt->xa, id, res) {
- qp = container_of(res, struct ib_qp, res);
- if (!qp->counter || (qp->counter->id != counter->id))
- continue;
- ret = fill_stat_counter_qp_entry(msg, qp->qp_num);
- if (ret)
- goto err;
- }
- xa_unlock(&rt->xa);
- nla_nest_end(msg, table_attr);
- return 0;
- err:
- xa_unlock(&rt->xa);
- nla_nest_cancel(msg, table_attr);
- return ret;
- }
- int rdma_nl_stat_hwcounter_entry(struct sk_buff *msg, const char *name,
- u64 value)
- {
- struct nlattr *entry_attr;
- entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY);
- if (!entry_attr)
- return -EMSGSIZE;
- if (nla_put_string(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME,
- name))
- goto err;
- if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE,
- value, RDMA_NLDEV_ATTR_PAD))
- goto err;
- nla_nest_end(msg, entry_attr);
- return 0;
- err:
- nla_nest_cancel(msg, entry_attr);
- return -EMSGSIZE;
- }
- EXPORT_SYMBOL(rdma_nl_stat_hwcounter_entry);
- static int fill_stat_mr_entry(struct sk_buff *msg, bool has_cap_net_admin,
- struct rdma_restrack_entry *res, uint32_t port)
- {
- struct ib_mr *mr = container_of(res, struct ib_mr, res);
- struct ib_device *dev = mr->pd->device;
- if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_MRN, res->id))
- goto err;
- if (dev->ops.fill_stat_mr_entry)
- return dev->ops.fill_stat_mr_entry(msg, mr);
- return 0;
- err:
- return -EMSGSIZE;
- }
- static int fill_stat_counter_hwcounters(struct sk_buff *msg,
- struct rdma_counter *counter)
- {
- struct rdma_hw_stats *st = counter->stats;
- struct nlattr *table_attr;
- int i;
- table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS);
- if (!table_attr)
- return -EMSGSIZE;
- 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_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;
- u8 flags;
- u32 entry;
- u32 id;
- };
- enum nldev_res_flags {
- NLDEV_PER_DEV = 1 << 0,
- };
- static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = {
- [RDMA_RESTRACK_QP] = {
- .nldev_attr = RDMA_NLDEV_ATTR_RES_QP,
- .entry = RDMA_NLDEV_ATTR_RES_QP_ENTRY,
- .id = RDMA_NLDEV_ATTR_RES_LQPN,
- },
- [RDMA_RESTRACK_CM_ID] = {
- .nldev_attr = RDMA_NLDEV_ATTR_RES_CM_ID,
- .entry = RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY,
- .id = RDMA_NLDEV_ATTR_RES_CM_IDN,
- },
- [RDMA_RESTRACK_CQ] = {
- .nldev_attr = RDMA_NLDEV_ATTR_RES_CQ,
- .flags = NLDEV_PER_DEV,
- .entry = RDMA_NLDEV_ATTR_RES_CQ_ENTRY,
- .id = RDMA_NLDEV_ATTR_RES_CQN,
- },
- [RDMA_RESTRACK_MR] = {
- .nldev_attr = RDMA_NLDEV_ATTR_RES_MR,
- .flags = NLDEV_PER_DEV,
- .entry = RDMA_NLDEV_ATTR_RES_MR_ENTRY,
- .id = RDMA_NLDEV_ATTR_RES_MRN,
- },
- [RDMA_RESTRACK_PD] = {
- .nldev_attr = RDMA_NLDEV_ATTR_RES_PD,
- .flags = NLDEV_PER_DEV,
- .entry = RDMA_NLDEV_ATTR_RES_PD_ENTRY,
- .id = RDMA_NLDEV_ATTR_RES_PDN,
- },
- [RDMA_RESTRACK_COUNTER] = {
- .nldev_attr = RDMA_NLDEV_ATTR_STAT_COUNTER,
- .entry = RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY,
- .id = RDMA_NLDEV_ATTR_STAT_COUNTER_ID,
- },
- };
- static int res_get_common_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct netlink_ext_ack *extack,
- enum rdma_restrack_type res_type,
- res_fill_func_t fill_func)
- {
- const struct nldev_fill_res_entry *fe = &fill_entries[res_type];
- struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
- struct rdma_restrack_entry *res;
- struct ib_device *device;
- u32 index, id, port = 0;
- bool has_cap_net_admin;
- struct sk_buff *msg;
- int ret;
- ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
- nldev_policy, extack);
- if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !fe->id || !tb[fe->id])
- return -EINVAL;
- index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
- device = ib_device_get_by_index(sock_net(skb->sk), index);
- if (!device)
- return -EINVAL;
- if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
- port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
- if (!rdma_is_port_valid(device, port)) {
- ret = -EINVAL;
- goto err;
- }
- }
- if ((port && fe->flags & NLDEV_PER_DEV) ||
- (!port && ~fe->flags & NLDEV_PER_DEV)) {
- ret = -EINVAL;
- goto err;
- }
- id = nla_get_u32(tb[fe->id]);
- res = rdma_restrack_get_byid(device, res_type, id);
- if (IS_ERR(res)) {
- ret = PTR_ERR(res);
- goto err;
- }
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg) {
- ret = -ENOMEM;
- goto err_get;
- }
- nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
- RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
- RDMA_NL_GET_OP(nlh->nlmsg_type)),
- 0, 0);
- if (fill_nldev_handle(msg, device)) {
- ret = -EMSGSIZE;
- goto err_free;
- }
- has_cap_net_admin = netlink_capable(skb, CAP_NET_ADMIN);
- ret = fill_func(msg, has_cap_net_admin, res, port);
- if (ret)
- goto err_free;
- rdma_restrack_put(res);
- nlmsg_end(msg, nlh);
- ib_device_put(device);
- return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
- err_free:
- nlmsg_free(msg);
- err_get:
- rdma_restrack_put(res);
- err:
- ib_device_put(device);
- return ret;
- }
- static int res_get_common_dumpit(struct sk_buff *skb,
- struct netlink_callback *cb,
- enum rdma_restrack_type res_type,
- res_fill_func_t fill_func)
- {
- const struct nldev_fill_res_entry *fe = &fill_entries[res_type];
- struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
- struct rdma_restrack_entry *res;
- struct rdma_restrack_root *rt;
- int err, ret = 0, idx = 0;
- struct nlattr *table_attr;
- struct nlattr *entry_attr;
- struct ib_device *device;
- int start = cb->args[0];
- bool has_cap_net_admin;
- struct nlmsghdr *nlh;
- unsigned long id;
- u32 index, port = 0;
- bool filled = false;
- err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
- nldev_policy, NULL);
- /*
- * Right now, we are expecting the device index to get res information,
- * but it is possible to extend this code to return all devices in
- * one shot by checking the existence of RDMA_NLDEV_ATTR_DEV_INDEX.
- * if it doesn't exist, we will iterate over all devices.
- *
- * But it is not needed for now.
- */
- if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX])
- return -EINVAL;
- index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
- device = ib_device_get_by_index(sock_net(skb->sk), index);
- if (!device)
- return -EINVAL;
- /*
- * If no PORT_INDEX is supplied, we will return all QPs from that device
- */
- if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) {
- port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
- if (!rdma_is_port_valid(device, port)) {
- ret = -EINVAL;
- goto err_index;
- }
- }
- nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
- RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
- RDMA_NL_GET_OP(cb->nlh->nlmsg_type)),
- 0, NLM_F_MULTI);
- if (fill_nldev_handle(skb, device)) {
- ret = -EMSGSIZE;
- goto err;
- }
- table_attr = nla_nest_start_noflag(skb, fe->nldev_attr);
- if (!table_attr) {
- ret = -EMSGSIZE;
- goto err;
- }
- has_cap_net_admin = netlink_capable(cb->skb, CAP_NET_ADMIN);
- rt = &device->res[res_type];
- xa_lock(&rt->xa);
- /*
- * FIXME: if the skip ahead is something common this loop should
- * use xas_for_each & xas_pause to optimize, we can have a lot of
- * objects.
- */
- xa_for_each(&rt->xa, id, res) {
- if (idx < start || !rdma_restrack_get(res))
- goto next;
- xa_unlock(&rt->xa);
- filled = true;
- entry_attr = nla_nest_start_noflag(skb, fe->entry);
- if (!entry_attr) {
- ret = -EMSGSIZE;
- rdma_restrack_put(res);
- goto msg_full;
- }
- ret = fill_func(skb, has_cap_net_admin, res, port);
- rdma_restrack_put(res);
- if (ret) {
- nla_nest_cancel(skb, entry_attr);
- if (ret == -EMSGSIZE)
- goto msg_full;
- if (ret == -EAGAIN)
- goto again;
- goto res_err;
- }
- nla_nest_end(skb, entry_attr);
- again: xa_lock(&rt->xa);
- next: idx++;
- }
- xa_unlock(&rt->xa);
- msg_full:
- nla_nest_end(skb, table_attr);
- nlmsg_end(skb, nlh);
- cb->args[0] = idx;
- /*
- * No more entries to fill, cancel the message and
- * return 0 to mark end of dumpit.
- */
- if (!filled)
- goto err;
- ib_device_put(device);
- return skb->len;
- res_err:
- nla_nest_cancel(skb, table_attr);
- err:
- nlmsg_cancel(skb, nlh);
- err_index:
- ib_device_put(device);
- return ret;
- }
- #define RES_GET_FUNCS(name, type) \
- static int nldev_res_get_##name##_dumpit(struct sk_buff *skb, \
- struct netlink_callback *cb) \
- { \
- return res_get_common_dumpit(skb, cb, type, \
- fill_res_##name##_entry); \
- } \
- static int nldev_res_get_##name##_doit(struct sk_buff *skb, \
- struct nlmsghdr *nlh, \
- struct netlink_ext_ack *extack) \
- { \
- return res_get_common_doit(skb, nlh, extack, type, \
- fill_res_##name##_entry); \
- }
- RES_GET_FUNCS(qp, RDMA_RESTRACK_QP);
- RES_GET_FUNCS(qp_raw, RDMA_RESTRACK_QP);
- RES_GET_FUNCS(cm_id, RDMA_RESTRACK_CM_ID);
- RES_GET_FUNCS(cq, RDMA_RESTRACK_CQ);
- RES_GET_FUNCS(cq_raw, RDMA_RESTRACK_CQ);
- RES_GET_FUNCS(pd, RDMA_RESTRACK_PD);
- RES_GET_FUNCS(mr, RDMA_RESTRACK_MR);
- RES_GET_FUNCS(mr_raw, RDMA_RESTRACK_MR);
- RES_GET_FUNCS(counter, RDMA_RESTRACK_COUNTER);
- 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,
- },
- [RDMA_NLDEV_CMD_RES_QP_GET_RAW] = {
- .doit = nldev_res_get_qp_raw_doit,
- .dump = nldev_res_get_qp_raw_dumpit,
- .flags = RDMA_NL_ADMIN_PERM,
- },
- [RDMA_NLDEV_CMD_RES_CQ_GET_RAW] = {
- .doit = nldev_res_get_cq_raw_doit,
- .dump = nldev_res_get_cq_raw_dumpit,
- .flags = RDMA_NL_ADMIN_PERM,
- },
- [RDMA_NLDEV_CMD_RES_MR_GET_RAW] = {
- .doit = nldev_res_get_mr_raw_doit,
- .dump = nldev_res_get_mr_raw_dumpit,
- .flags = RDMA_NL_ADMIN_PERM,
- },
- };
- 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);
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