From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH 1/6] Drivers: net: hyperv: Enable scatter gather I/O Date: Thu, 06 Mar 2014 14:29:19 -0500 (EST) Message-ID: <20140306.142919.763823800315842610.davem@davemloft.net> References: <1394104358-23438-1-git-send-email-kys@microsoft.com> <1394104390-23477-1-git-send-email-kys@microsoft.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: olaf@aepfle.de, netdev@vger.kernel.org, jasowang@redhat.com, linux-kernel@vger.kernel.org, apw@canonical.com, devel@linuxdriverproject.org To: kys@microsoft.com Return-path: In-Reply-To: <1394104390-23477-1-git-send-email-kys@microsoft.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: driverdev-devel-bounces@linuxdriverproject.org List-Id: netdev.vger.kernel.org From: "K. Y. Srinivasan" Date: Thu, 6 Mar 2014 03:13:05 -0800 > @@ -140,21 +140,125 @@ static void netvsc_xmit_completion(void *context) > dev_kfree_skb_any(skb); > } > > +static u32 fill_pg_buf(struct page *page, u32 offset, u32 len, > + struct hv_page_buffer *pb) > +{ > + int j = 0; > + /* > + * Deal with compund pages by ignoring unused part > + * of the page. > + */ > + page += offset >> PAGE_SHIFT; > + offset &= ~PAGE_MASK; Please put an empty line between local variable declarations and the code. Please format comments: /* Like * this. */ > + while (len > 0) { > + unsigned long bytes; > + bytes = PAGE_SIZE - offset; Empty line between local variable declarations and code. > + /* > + * The packet is laid out thus: > + * 1. hdr > + * 2. skb linear data > + * 3. skb fragment data > + */ Fix comment formatting as explained above. > + if (hdr != NULL) { > + slots_used += fill_pg_buf(virt_to_page(hdr), > + offset_in_page(hdr), > + len, &pb[slots_used]); > + } Single statment basic blocks do not need surrounding braces. > + /* > + * We will atmost need two pages to describe the rndis > + * header. We can only transmit MAX_PAGE_BUFFER_COUNT number > + * of pages in a single packet. > + */ Comment formatting.