From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Luis R. Rodriguez" Subject: [RFC v2 4/4] xen-netback: skip IPv4 and IPv6 interfaces Date: Fri, 14 Feb 2014 18:59:40 -0800 Message-ID: <1392433180-16052-5-git-send-email-mcgrof@do-not-panic.com> References: <1392433180-16052-1-git-send-email-mcgrof@do-not-panic.com> Cc: xen-devel@lists.xenproject.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, "Luis R. Rodriguez" , Paul Durrant , Ian Campbell , Wei Liu To: netdev@vger.kernel.org Return-path: In-Reply-To: <1392433180-16052-1-git-send-email-mcgrof@do-not-panic.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: "Luis R. Rodriguez" The xen-netback driver is used only to provide a backend interface for the frontend. The link is the only thing we use, and that is used internally for letting us know when the xen-netfront is ready, when it switches to XenbusStateConnected. Note that only when the both the xen-netfront and xen-netback are both in state XenbusStateConnected will xen-netback allow userspace on the host (backend) to bring up the interface. Enabling and disabling the interface will simply enable or disable NAPI respectively, and that's used for IRQ communication set up with the xen event channels. Cc: Paul Durrant Cc: Ian Campbell Cc: Wei Liu Cc: xen-devel@lists.xenproject.org Cc: netdev@vger.kernel.org Signed-off-by: Luis R. Rodriguez --- drivers/net/xen-netback/interface.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c index d380e3f..07e6fd2 100644 --- a/drivers/net/xen-netback/interface.c +++ b/drivers/net/xen-netback/interface.c @@ -351,7 +351,7 @@ struct xenvif *xenvif_alloc(struct device *parent, domid_t domid, eth_hw_addr_random(dev); memcpy(dev->dev_addr, xen_oui, 3); - dev->priv_flags |= IFF_BRIDGE_NON_ROOT; + dev->priv_flags |= IFF_BRIDGE_NON_ROOT | IFF_SKIP_IP; netif_napi_add(dev, &vif->napi, xenvif_poll, XENVIF_NAPI_WEIGHT); netif_carrier_off(dev); -- 1.8.5.2