Dexuan Cui <decui@xxxxxxxxxxxxx> writes:
Just some minor nitpicks below -- I have to admit I didn't test the feature.
[..skip..]
> +
> + if (sk->sk_err) {
> + ret = -sk->sk_err;
> + goto out_wait_error;
> + } else {
> + ret = 0;
> + }
> +
> +out_wait:
> + finish_wait(sk_sleep(sk), &wait);
> +out:
> + release_sock(sk);
> + return ret;
> +
> +out_wait_error:
> + sk->sk_state = SS_UNCONNECTED;
> + sock->state = SS_UNCONNECTED;
> + goto out_wait;
> +}
Why not just place out_wait_error label before out_wait (and do 'goto
out_wait' in ret = 0 case instead of 'goto out_wait_error' in the error
case)?
[..skip..]
> +
> +static int __init hvsock_init(void)
> +{
> + int ret;
> +
> + /* Hyper-V socket requires at least VMBus 4.0 */
> + if ((vmbus_proto_version >> 16) < 4) {
> + pr_err("failed to load: VMBus 4 or later is required\n");
> + return -ENODEV;
(Let me pretend I'm Dan :-) So here we return ...
> + }
> +
> + ret = vmbus_driver_register(&hvsock_drv);
> + if (ret) {
> + pr_err("failed to register hv_sock driver\n");
> + goto out;
... and here we goto where we just return. I suggest we bring some
consistency by directly returning ret here and eliminating 'out' label.
> + }
> +
> + ret = proto_register(&hvsock_proto, 0);
> + if (ret) {
> + pr_err("failed to register protocol\n");
> + goto unreg_hvsock_drv;
> + }
> +
> + ret = sock_register(&hvsock_family_ops);
> + if (ret) {
> + pr_err("failed to register address family\n");
> + goto unreg_proto;
> + }
> +
> + return 0;
> +
> +unreg_proto:
> + proto_unregister(&hvsock_proto);
> +unreg_hvsock_drv:
> + vmbus_driver_unregister(&hvsock_drv);
> +out:
> + return ret;
> +}
> +
> +static void __exit hvsock_exit(void)
> +{
> + sock_unregister(AF_HYPERV);
> + proto_unregister(&hvsock_proto);
> + vmbus_driver_unregister(&hvsock_drv);
> +}
> +
> +module_init(hvsock_init);
> +module_exit(hvsock_exit);
> +
> +MODULE_DESCRIPTION("Microsoft Hyper-V Virtual Socket Family");
> +MODULE_VERSION("0.1");
Do we really need it? When the driver is commited we won't probably be
updating it with v0.2 as a whole, we'll be sending patches addressing
issues and there always will be a question when to swtich to 0.2, 0.3,
... And we don't have MODULE_VERSION for other Hyper-V drivers.
> +MODULE_LICENSE("Dual BSD/GPL");
--
Vitaly
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