From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg KH Subject: Re: [PATCH net-next] Add support for netvsc build without CONFIG_SYSFS flag Date: Thu, 8 May 2014 02:13:04 -0700 Message-ID: <20140508091304.GB24820@kroah.com> References: <1399502704-18495-1-git-send-email-haiyangz@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, driverdev-devel@linuxdriverproject.org, linux-kernel@vger.kernel.org, davem@davemloft.net To: Haiyang Zhang Return-path: Content-Disposition: inline In-Reply-To: <1399502704-18495-1-git-send-email-haiyangz@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 On Wed, May 07, 2014 at 03:45:04PM -0700, Haiyang Zhang wrote: > This change ensures the driver can be built successfully without the > CONFIG_SYSFS flag. > MS-TFS: 182270 > > Signed-off-by: Haiyang Zhang > Reviewed-by: K. Y. Srinivasan > --- > drivers/net/hyperv/hyperv_net.h | 2 ++ > drivers/net/hyperv/netvsc_drv.c | 12 +++++++++++- > drivers/net/hyperv/rndis_filter.c | 4 ++-- > 3 files changed, 15 insertions(+), 3 deletions(-) > > diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h > index 4b7df5a..23b96bc 100644 > --- a/drivers/net/hyperv/hyperv_net.h > +++ b/drivers/net/hyperv/hyperv_net.h > @@ -87,6 +87,8 @@ struct ndis_recv_scale_cap { /* NDIS_RECEIVE_SCALE_CAPABILITIES */ > #define HASH_KEYLEN NDIS_RSS_HASH_SECRET_KEY_MAX_SIZE_REVISION_2 > extern u8 netvsc_hash_key[]; > > +extern unsigned int netvsc_num_queue; > + > struct ndis_recv_scale_param { /* NDIS_RECEIVE_SCALE_PARAMETERS */ > struct ndis_obj_header hdr; > > diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c > index 939e3af..07896f3 100644 > --- a/drivers/net/hyperv/netvsc_drv.c > +++ b/drivers/net/hyperv/netvsc_drv.c > @@ -52,6 +52,8 @@ static int ring_size = 128; > module_param(ring_size, int, S_IRUGO); > MODULE_PARM_DESC(ring_size, "Ring buffer size (# of pages)"); > > +unsigned int netvsc_num_queue = 1; > + > static void do_set_multicast(struct work_struct *w) > { > struct net_device_context *ndevctx = > @@ -639,9 +641,11 @@ int netvsc_recv_callback(struct hv_device *device_obj, > __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), > packet->vlan_tci); > > +#ifdef CONFIG_SYSFS > skb_record_rx_queue(skb, packet->channel-> > offermsg.offer.sub_channel_index % > net->real_num_rx_queues); > +#endif Why is this a sysfs-only function? It should have nothing to do with sysfs, right? So why would the driver care? Don't put #ifdef in drivers, it's unmaintainable over time, if this really is a sysfs-only function, this should already be handled automatically in a .h file somewhere. thanks, greg k-h