From patchwork Tue Apr 21 22:58:05 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Xiao X-Patchwork-Id: 463513 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3F8731400DE for ; Wed, 22 Apr 2015 07:48:11 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965040AbbDUVr4 (ORCPT ); Tue, 21 Apr 2015 17:47:56 -0400 Received: from p3plsmtps2ded02.prod.phx3.secureserver.net ([208.109.80.59]:49200 "EHLO p3plsmtps2ded02.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965016AbbDUVrx (ORCPT ); Tue, 21 Apr 2015 17:47:53 -0400 X-Greylist: delayed 452 seconds by postgrey-1.27 at vger.kernel.org; Tue, 21 Apr 2015 17:47:53 EDT Received: from linuxonhyperv.com ([72.167.245.219]) by p3plsmtps2ded02.prod.phx3.secureserver.net with : DED : id JlgK1q01s4kklxU01lgKw9; Tue, 21 Apr 2015 14:40:19 -0700 x-originating-ip: 72.167.245.219 Received: by linuxonhyperv.com (Postfix, from userid 522) id 0D1AE1901ED; Tue, 21 Apr 2015 15:58:56 -0700 (PDT) From: sixiao@microsoft.com To: kys@microsoft.com, haiyangz@microsoft.com, devel@linuxdriverproject.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Simon Xiao Subject: [PATCH net-next, 1/1] hv_netvsc: call dump_rndis_message() only in netvsc debug mode Date: Tue, 21 Apr 2015 15:58:05 -0700 Message-Id: <1429657085-23379-1-git-send-email-sixiao@microsoft.com> X-Mailer: git-send-email 1.7.4.1 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Simon Xiao Signed-off-by: Simon Xiao Reviewed-by: K. Y. Srinivasan Reviewed-by: Haiyang Zhang --- drivers/net/hyperv/hyperv_net.h | 3 +++ drivers/net/hyperv/netvsc_drv.c | 8 ++++++++ drivers/net/hyperv/rndis_filter.c | 3 ++- 3 files changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h index a10b316..c9be35e 100644 --- a/drivers/net/hyperv/hyperv_net.h +++ b/drivers/net/hyperv/hyperv_net.h @@ -28,6 +28,9 @@ #include #include +/* flag for netvsc debug mode */ +extern int debug_mode; + /* RSS related */ #define OID_GEN_RECEIVE_SCALE_CAPABILITIES 0x00010203 /* query only */ #define OID_GEN_RECEIVE_SCALE_PARAMETERS 0x00010204 /* query and set */ diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index a3a9d38..7c41864 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -52,6 +52,10 @@ static int ring_size = 128; module_param(ring_size, int, S_IRUGO); MODULE_PARM_DESC(ring_size, "Ring buffer size (# of pages)"); +int debug_mode = 0; +module_param(debug_mode, int, S_IRUGO); +MODULE_PARM_DESC(debug_mode, "debug mode: zero(0) for non-debug mode; non-zero for debug mode"); + static void do_set_multicast(struct work_struct *w) { struct net_device_context *ndevctx = @@ -999,6 +1003,10 @@ static int __init netvsc_drv_init(void) pr_info("Increased ring_size to %d (min allowed)\n", ring_size); } + + if (debug_mode != 0) + pr_info("Run netvsc in debug mode"); + return vmbus_driver_register(&netvsc_drv); } diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c index 0d92efe..a3f43f6 100644 --- a/drivers/net/hyperv/rndis_filter.c +++ b/drivers/net/hyperv/rndis_filter.c @@ -429,7 +429,8 @@ int rndis_filter_receive(struct hv_device *dev, rndis_msg = pkt->data; - dump_rndis_message(dev, rndis_msg); + if (debug_mode != 0) + dump_rndis_message(dev, rndis_msg); switch (rndis_msg->ndis_msg_type) { case RNDIS_MSG_PACKET: