diff options
Diffstat (limited to 'drivers/infiniband/core/nldev.c')
| -rw-r--r-- | drivers/infiniband/core/nldev.c | 233 |
1 files changed, 165 insertions, 68 deletions
diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c index 69188cbbd99b..5499f5629dc2 100644 --- a/drivers/infiniband/core/nldev.c +++ b/drivers/infiniband/core/nldev.c @@ -42,84 +42,94 @@ #include "cma_priv.h" #include "restrack.h" +/* + * Sort array elements by the netlink attribute name + */ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = { - [RDMA_NLDEV_ATTR_DEV_INDEX] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING, - .len = IB_DEVICE_NAME_MAX - 1}, - [RDMA_NLDEV_ATTR_PORT_INDEX] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_FW_VERSION] = { .type = NLA_NUL_STRING, - .len = IB_FW_VERSION_NAME_MAX - 1}, - [RDMA_NLDEV_ATTR_NODE_GUID] = { .type = NLA_U64 }, - [RDMA_NLDEV_ATTR_SYS_IMAGE_GUID] = { .type = NLA_U64 }, - [RDMA_NLDEV_ATTR_SUBNET_PREFIX] = { .type = NLA_U64 }, - [RDMA_NLDEV_ATTR_LID] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_SM_LID] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_LMC] = { .type = NLA_U8 }, - [RDMA_NLDEV_ATTR_PORT_STATE] = { .type = NLA_U8 }, - [RDMA_NLDEV_ATTR_PORT_PHYS_STATE] = { .type = NLA_U8 }, - [RDMA_NLDEV_ATTR_DEV_NODE_TYPE] = { .type = NLA_U8 }, - [RDMA_NLDEV_ATTR_RES_SUMMARY] = { .type = NLA_NESTED }, - [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY] = { .type = NLA_NESTED }, - [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME] = { .type = NLA_NUL_STRING, - .len = 16 }, - [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR] = { .type = NLA_U64 }, - [RDMA_NLDEV_ATTR_RES_QP] = { .type = NLA_NESTED }, - [RDMA_NLDEV_ATTR_RES_QP_ENTRY] = { .type = NLA_NESTED }, - [RDMA_NLDEV_ATTR_RES_LQPN] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_RES_RQPN] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_RES_RQ_PSN] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_RES_SQ_PSN] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE] = { .type = NLA_U8 }, - [RDMA_NLDEV_ATTR_RES_TYPE] = { .type = NLA_U8 }, - [RDMA_NLDEV_ATTR_RES_STATE] = { .type = NLA_U8 }, - [RDMA_NLDEV_ATTR_RES_PID] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_RES_KERN_NAME] = { .type = NLA_NUL_STRING, - .len = TASK_COMM_LEN }, + [RDMA_NLDEV_ATTR_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_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_PS] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_RES_SRC_ADDR] = { - .len = sizeof(struct __kernel_sockaddr_storage) }, - [RDMA_NLDEV_ATTR_RES_DST_ADDR] = { - .len = sizeof(struct __kernel_sockaddr_storage) }, [RDMA_NLDEV_ATTR_RES_CQ] = { .type = NLA_NESTED }, - [RDMA_NLDEV_ATTR_RES_CQ_ENTRY] = { .type = NLA_NESTED }, [RDMA_NLDEV_ATTR_RES_CQE] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_RES_USECNT] = { .type = NLA_U64 }, - [RDMA_NLDEV_ATTR_RES_POLL_CTX] = { .type = NLA_U8 }, - [RDMA_NLDEV_ATTR_RES_MR] = { .type = NLA_NESTED }, - [RDMA_NLDEV_ATTR_RES_MR_ENTRY] = { .type = NLA_NESTED }, - [RDMA_NLDEV_ATTR_RES_RKEY] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_RES_LKEY] = { .type = NLA_U32 }, + [RDMA_NLDEV_ATTR_RES_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_PD_ENTRY] = { .type = NLA_NESTED }, - [RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_NDEV_INDEX] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_NDEV_NAME] = { .type = NLA_NUL_STRING, - .len = IFNAMSIZ }, - [RDMA_NLDEV_ATTR_DRIVER] = { .type = NLA_NESTED }, - [RDMA_NLDEV_ATTR_DRIVER_ENTRY] = { .type = NLA_NESTED }, - [RDMA_NLDEV_ATTR_DRIVER_STRING] = { .type = NLA_NUL_STRING, - .len = RDMA_NLDEV_ATTR_ENTRY_STRLEN }, - [RDMA_NLDEV_ATTR_DRIVER_PRINT_TYPE] = { .type = NLA_U8 }, - [RDMA_NLDEV_ATTR_DRIVER_S32] = { .type = NLA_S32 }, - [RDMA_NLDEV_ATTR_DRIVER_U32] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_DRIVER_S64] = { .type = NLA_S64 }, - [RDMA_NLDEV_ATTR_DRIVER_U64] = { .type = NLA_U64 }, [RDMA_NLDEV_ATTR_RES_PDN] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_RES_CQN] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_RES_MRN] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_RES_CM_IDN] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_RES_CTXN] = { .type = NLA_U32 }, - [RDMA_NLDEV_ATTR_LINK_TYPE] = { .type = NLA_NUL_STRING, - .len = RDMA_NLDEV_ATTR_ENTRY_STRLEN }, - [RDMA_NLDEV_SYS_ATTR_NETNS_MODE] = { .type = NLA_U8 }, - [RDMA_NLDEV_ATTR_DEV_PROTOCOL] = { .type = NLA_NUL_STRING, - .len = RDMA_NLDEV_ATTR_ENTRY_STRLEN }, + [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_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, @@ -1347,6 +1357,90 @@ static int nldev_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, 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(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) { @@ -1404,6 +1498,9 @@ static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = { .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, |