diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/core/ucma.c | 52 |
1 files changed, 51 insertions, 1 deletions
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c index 3b9ca6d7a21b..f86ece701db6 100644 --- a/drivers/infiniband/core/ucma.c +++ b/drivers/infiniband/core/ucma.c @@ -1745,6 +1745,55 @@ err_unlock: 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; +} + static ssize_t (*ucma_cmd_table[])(struct ucma_file *file, const char __user *inbuf, int in_len, int out_len) = { @@ -1771,7 +1820,8 @@ static ssize_t (*ucma_cmd_table[])(struct ucma_file *file, [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_RESOLVE_IB_SERVICE] = ucma_resolve_ib_service + [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, |