From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ming Lei Subject: [PATCH 00/11] usbnet: usbnet: handle link change Date: Thu, 11 Apr 2013 22:40:29 +0800 Message-ID: <1365691240-816-1-git-send-email-ming.lei@canonical.com> Cc: Oliver Neukum , netdev@vger.kernel.org, linux-usb@vger.kernel.org To: "David S. Miller" , Greg Kroah-Hartman Return-path: Received: from mail-pa0-f41.google.com ([209.85.220.41]:44617 "EHLO mail-pa0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932712Ab3DKOky (ORCPT ); Thu, 11 Apr 2013 10:40:54 -0400 Sender: netdev-owner@vger.kernel.org List-ID: Hi, This patch set introduces usbnet_link_change() API and applies it on all usbnet drivers, then handle the link change centrally to stop bulk transfer when link becomes off and restart bulk transfer when link becomes on. With the change, ~10% performance boost on bulk transfer of another device on the same bus can be obtained when link is off. Also, stopping bulk transfer when link becomes off may disable asynchonous schedule of host controller, power might be saved probabally. drivers/net/usb/asix_devices.c | 6 +----- drivers/net/usb/ax88179_178a.c | 12 ++++------- drivers/net/usb/cdc_ether.c | 5 +---- drivers/net/usb/cdc_ncm.c | 9 +++----- drivers/net/usb/dm9601.c | 7 +------ drivers/net/usb/mcs7830.c | 6 +----- drivers/net/usb/sierra_net.c | 3 +-- drivers/net/usb/usbnet.c | 45 +++++++++++++++++++++++++++++++++++++++- include/linux/usb/usbnet.h | 2 ++ 9 files changed, 58 insertions(+), 37 deletions(-) Thanks, -- Ming Lei