diff options
Diffstat (limited to 'drivers/infiniband/core/ucma.c')
| -rw-r--r-- | drivers/infiniband/core/ucma.c | 149 |
1 files changed, 130 insertions, 19 deletions
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c index bf42650f125b..ec3be65a2b88 100644 --- a/drivers/infiniband/core/ucma.c +++ b/drivers/infiniband/core/ucma.c @@ -69,9 +69,10 @@ static struct ctl_table ucma_ctl_table[] = { .data = &max_backlog, .maxlen = sizeof max_backlog, .mode = 0644, - .proc_handler = proc_dointvec, + .proc_handler = proc_dointvec_minmax, + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_INT_MAX, }, - { } }; struct ucma_file { @@ -281,6 +282,10 @@ static struct ucma_event *ucma_create_uevent(struct ucma_context *ctx, } uevent->resp.event = event->event; uevent->resp.status = event->status; + + if (event->event == RDMA_CM_EVENT_ADDRINFO_RESOLVED) + goto out; + if (ctx->cm_id->qp_type == IB_QPT_UD) ucma_copy_ud_event(ctx->cm_id->device, &uevent->resp.param.ud, &event->param.ud); @@ -288,6 +293,7 @@ static struct ucma_event *ucma_create_uevent(struct ucma_context *ctx, ucma_copy_conn_event(&uevent->resp.param.conn, &event->param.conn); +out: uevent->resp.ece.vendor_id = event->ece.vendor_id; uevent->resp.ece.attr_mod = event->ece.attr_mod; return uevent; @@ -360,7 +366,7 @@ static int ucma_event_handler(struct rdma_cm_id *cm_id, if (event->event == RDMA_CM_EVENT_DEVICE_REMOVAL) { xa_lock(&ctx_table); if (xa_load(&ctx_table, ctx->id) == ctx) - queue_work(system_unbound_wq, &ctx->close_work); + queue_work(system_dfl_wq, &ctx->close_work); xa_unlock(&ctx_table); } return 0; @@ -727,6 +733,28 @@ static ssize_t ucma_resolve_addr(struct ucma_file *file, return ret; } +static ssize_t ucma_resolve_ib_service(struct ucma_file *file, + const char __user *inbuf, int in_len, + int out_len) +{ + struct rdma_ucm_resolve_ib_service cmd; + struct ucma_context *ctx; + int ret; + + if (copy_from_user(&cmd, inbuf, sizeof(cmd))) + return -EFAULT; + + ctx = ucma_get_ctx(file, cmd.id); + if (IS_ERR(ctx)) + return PTR_ERR(ctx); + + mutex_lock(&ctx->mutex); + ret = rdma_resolve_ib_service(ctx->cm_id, &cmd.ibs); + mutex_unlock(&ctx->mutex); + ucma_put_ctx(ctx); + return ret; +} + static ssize_t ucma_resolve_route(struct ucma_file *file, const char __user *inbuf, int in_len, int out_len) @@ -993,6 +1021,43 @@ static ssize_t ucma_query_gid(struct ucma_context *ctx, return ret; } +static ssize_t ucma_query_ib_service(struct ucma_context *ctx, + void __user *response, int out_len) +{ + struct rdma_ucm_query_ib_service_resp *resp; + int n, ret = 0; + + if (out_len < sizeof(struct rdma_ucm_query_ib_service_resp)) + return -ENOSPC; + + if (!ctx->cm_id->route.service_recs) + return -ENODATA; + + resp = kzalloc(out_len, GFP_KERNEL); + if (!resp) + return -ENOMEM; + + resp->num_service_recs = ctx->cm_id->route.num_service_recs; + + n = (out_len - sizeof(struct rdma_ucm_query_ib_service_resp)) / + sizeof(struct ib_user_service_rec); + + if (!n) + goto out; + + if (n > ctx->cm_id->route.num_service_recs) + n = ctx->cm_id->route.num_service_recs; + + memcpy(resp->recs, ctx->cm_id->route.service_recs, + sizeof(*resp->recs) * n); + if (copy_to_user(response, resp, struct_size(resp, recs, n))) + ret = -EFAULT; + +out: + kfree(resp); + return ret; +} + static ssize_t ucma_query(struct ucma_file *file, const char __user *inbuf, int in_len, int out_len) @@ -1021,6 +1086,9 @@ static ssize_t ucma_query(struct ucma_file *file, case RDMA_USER_CM_QUERY_GID: ret = ucma_query_gid(ctx, response, out_len); break; + case RDMA_USER_CM_QUERY_IB_SERVICE: + ret = ucma_query_ib_service(ctx, response, out_len); + break; default: ret = -ENOSYS; break; @@ -1616,7 +1684,6 @@ static ssize_t ucma_migrate_id(struct ucma_file *new_file, struct ucma_event *uevent, *tmp; struct ucma_context *ctx; LIST_HEAD(event_list); - struct fd f; struct ucma_file *cur_file; int ret = 0; @@ -1624,21 +1691,17 @@ static ssize_t ucma_migrate_id(struct ucma_file *new_file, return -EFAULT; /* Get current fd to protect against it being closed */ - f = fdget(cmd.fd); - if (!f.file) + CLASS(fd, f)(cmd.fd); + if (fd_empty(f)) return -ENOENT; - if (f.file->f_op != &ucma_fops) { - ret = -EINVAL; - goto file_put; - } - cur_file = f.file->private_data; + if (fd_file(f)->f_op != &ucma_fops) + return -EINVAL; + cur_file = fd_file(f)->private_data; /* Validate current fd and prevent destruction of id. */ ctx = ucma_get_ctx(cur_file, cmd.id); - if (IS_ERR(ctx)) { - ret = PTR_ERR(ctx); - goto file_put; - } + if (IS_ERR(ctx)) + return PTR_ERR(ctx); rdma_lock_handler(ctx->cm_id); /* @@ -1679,8 +1742,55 @@ static ssize_t ucma_migrate_id(struct ucma_file *new_file, err_unlock: rdma_unlock_handler(ctx->cm_id); ucma_put_ctx(ctx); -file_put: - fdput(f); + return ret; +} + +static ssize_t ucma_write_cm_event(struct ucma_file *file, + const char __user *inbuf, int in_len, + int out_len) +{ + struct rdma_ucm_write_cm_event cmd; + struct rdma_cm_event event = {}; + struct ucma_event *uevent; + struct ucma_context *ctx; + int ret = 0; + + if (copy_from_user(&cmd, inbuf, sizeof(cmd))) + return -EFAULT; + + if ((cmd.event != RDMA_CM_EVENT_USER) && + (cmd.event != RDMA_CM_EVENT_INTERNAL)) + return -EINVAL; + + ctx = ucma_get_ctx(file, cmd.id); + if (IS_ERR(ctx)) + return PTR_ERR(ctx); + + event.event = cmd.event; + event.status = cmd.status; + event.param.arg = cmd.param.arg; + + uevent = kzalloc(sizeof(*uevent), GFP_KERNEL); + if (!uevent) { + ret = -ENOMEM; + goto out; + } + + uevent->ctx = ctx; + uevent->resp.uid = ctx->uid; + uevent->resp.id = ctx->id; + uevent->resp.event = event.event; + uevent->resp.status = event.status; + memcpy(uevent->resp.param.arg32, &event.param.arg, + sizeof(event.param.arg)); + + mutex_lock(&ctx->file->mut); + list_add_tail(&uevent->list, &ctx->file->event_list); + mutex_unlock(&ctx->file->mut); + wake_up_interruptible(&ctx->file->poll_wait); + +out: + ucma_put_ctx(ctx); return ret; } @@ -1709,7 +1819,9 @@ static ssize_t (*ucma_cmd_table[])(struct ucma_file *file, [RDMA_USER_CM_CMD_QUERY] = ucma_query, [RDMA_USER_CM_CMD_BIND] = ucma_bind, [RDMA_USER_CM_CMD_RESOLVE_ADDR] = ucma_resolve_addr, - [RDMA_USER_CM_CMD_JOIN_MCAST] = ucma_join_multicast + [RDMA_USER_CM_CMD_JOIN_MCAST] = ucma_join_multicast, + [RDMA_USER_CM_CMD_RESOLVE_IB_SERVICE] = ucma_resolve_ib_service, + [RDMA_USER_CM_CMD_WRITE_CM_EVENT] = ucma_write_cm_event, }; static ssize_t ucma_write(struct file *filp, const char __user *buf, @@ -1818,7 +1930,6 @@ static const struct file_operations ucma_fops = { .release = ucma_close, .write = ucma_write, .poll = ucma_poll, - .llseek = no_llseek, }; static struct miscdevice ucma_misc = { |