netdev - RE: [PATCH v7 net-next 1/1] hv_sock: introduce Hyper-V Sockets

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Date:	Thu, 7 Apr 2016 11:47:26 +0000
From:	Dexuan Cui <decui@...rosoft.com>
To:	Joe Perches <joe@...ches.com>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"olaf@...fle.de" <olaf@...fle.de>,
	"apw@...onical.com" <apw@...onical.com>,
	"jasowang@...hat.com" <jasowang@...hat.com>,
	KY Srinivasan <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>
CC:	"vkuznets@...hat.com" <vkuznets@...hat.com>
Subject: RE: [PATCH v7 net-next 1/1] hv_sock: introduce Hyper-V Sockets

> From: Joe Perches [mailto:joe@...ches.com]
> Sent: Thursday, April 7, 2016 19:30
> To: Dexuan Cui <decui@...rosoft.com>; gregkh@...uxfoundation.org;
> davem@...emloft.net; netdev@...r.kernel.org; linux-kernel@...r.kernel.org;
> devel@...uxdriverproject.org; olaf@...fle.de; apw@...onical.com;
> jasowang@...hat.com; KY Srinivasan <kys@...rosoft.com>; Haiyang Zhang
> <haiyangz@...rosoft.com>
> Cc: vkuznets@...hat.com
> Subject: Re: [PATCH v7 net-next 1/1] hv_sock: introduce Hyper-V Sockets
> 
> On Thu, 2016-04-07 at 05:50 -0700, Dexuan Cui wrote:
> > Hyper-V Sockets (hv_sock) supplies a byte-stream based communication
> > mechanism between the host and the guest. It's somewhat like TCP over
> > VMBus, but the transportation layer (VMBus) is much simpler than IP.
> 
> style trivia:
> 
> > diff --git a/net/hv_sock/af_hvsock.c b/net/hv_sock/af_hvsock.c
> []
> > +static struct sock *__hvsock_find_bound_socket(const struct sockaddr_hv
> *addr)
> > +{
> > +	struct hvsock_sock *hvsk;
> > +
> > +	list_for_each_entry(hvsk, &hvsock_bound_list, bound_list)
> > +		if (uuid_equals(addr->shv_service_id,
> > +				hvsk->local_addr.shv_service_id))
> > +			return hvsock_to_sk(hvsk);
> 
> Because there's an if, it's generally nicer to use
> braces in the list_for_each

Thanks for the suggestion, Joe!
I'll add {}.

> > +static struct sock *__hvsock_find_connected_socket_by_channel(
> > +	const struct vmbus_channel *channel)
> > +{
> > +	struct hvsock_sock *hvsk;
> > +
> > +	list_for_each_entry(hvsk, &hvsock_connected_list, connected_list)
> > +		if (hvsk->channel == channel)
> > +			return hvsock_to_sk(hvsk);
> > +	return NULL;
> 
> here too
I'll fix this too.

> > +static int hvsock_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
> > +{
> []
> > +	if (msg->msg_flags & ~MSG_DONTWAIT) {
> > +		pr_err("hvsock_sendmsg: unsupported flags=0x%x\n",
> > +		       msg->msg_flags);
> 
> All the pr_<level> messages with embedded function
> names could use "%s:", __func__
I'll fix this.

Thanks,
-- Dexuan