From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vitaly Kuznetsov Subject: [PATCH net-next] xen-netfront: fix queue name setting Date: Fri, 20 Jul 2018 18:33:59 +0200 Message-ID: <20180720163359.28187-1-vkuznets@redhat.com> Cc: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org, Boris Ostrovsky , Juergen Gross , Ross Lagerwall To: netdev@vger.kernel.org Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Commit f599c64fdf7d ("xen-netfront: Fix race between device setup and open") changed the initialization order: xennet_create_queues() now happens before we do register_netdev() so using netdev->name in xennet_init_queue() is incorrect, we end up with the following in /proc/interrupts: 60: 139 0 xen-dyn -event eth%d-q0-tx 61: 265 0 xen-dyn -event eth%d-q0-rx 62: 234 0 xen-dyn -event eth%d-q1-tx 63: 1 0 xen-dyn -event eth%d-q1-rx and this looks ugly. Actually, using early netdev name (even when it's already set) is also not ideal: nowadays we tend to rename eth devices and queue name may end up not corresponding to the netdev name. Use nodename from xenbus device for queue naming: this can't change in VM's lifetime. Now /proc/interrupts looks like 62: 202 0 xen-dyn -event device/vif/0-q0-tx 63: 317 0 xen-dyn -event device/vif/0-q0-rx 64: 262 0 xen-dyn -event device/vif/0-q1-tx 65: 17 0 xen-dyn -event device/vif/0-q1-rx Fixes: f599c64fdf7d ("xen-netfront: Fix race between device setup and open") Signed-off-by: Vitaly Kuznetsov --- drivers/net/xen-netfront.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c index a57daecf1d57..1b40b648ed5c 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -1604,7 +1604,7 @@ static int xennet_init_queue(struct netfront_queue *queue) timer_setup(&queue->rx_refill_timer, rx_refill_timeout, 0); snprintf(queue->name, sizeof(queue->name), "%s-q%u", - queue->info->netdev->name, queue->id); + queue->info->xbdev->nodename, queue->id); /* Initialise tx_skbs as a free chain containing every entry. */ queue->tx_skb_freelist = 0; -- 2.14.4