From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [net-next-2.6 PATCH 3/5] igb: fix link down inital state Date: Fri, 17 Apr 2009 23:44:32 -0700 Message-ID: <20090418064431.4328.77058.stgit@localhost.localdomain> References: <20090418064427.4328.45811.stgit@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, gospo@redhat.com, Jesse Brandeburg , Jeff Kirsher To: davem@davemloft.net Return-path: Received: from qmta07.emeryville.ca.mail.comcast.net ([76.96.30.64]:49572 "EHLO QMTA07.emeryville.ca.mail.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753561AbZDRGoe (ORCPT ); Sat, 18 Apr 2009 02:44:34 -0400 In-Reply-To: <20090418064427.4328.45811.stgit@localhost.localdomain> Sender: netdev-owner@vger.kernel.org List-ID: From: Jesse Brandeburg As reported by Andrew Lutomirski All the intel wired ethernet drivers were calling netif_carrier_off and netif_stop_queue (or variants) before calling register_netdevice This is incorrect behavior as was pointed out by davem, and causes ifconfig and friends to report a strange state before first link after the driver was loaded, since without a netif_carrier_off, the stack assumes carrier_on, but before register_netdev, netlink messages are not sent out telling link state. This apparently confused *some* versions of networkmanager. Signed-off-by: Jesse Brandeburg Reported-by: Andrew Lutomirski Signed-off-by: Jeff Kirsher --- drivers/net/igb/igb_main.c | 9 +++++---- 1 files changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index 08c8014..ceaa585 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -1442,15 +1442,14 @@ static int __devinit igb_probe(struct pci_dev *pdev, * driver. */ igb_get_hw_control(adapter); - /* tell the stack to leave us alone until igb_open() is called */ - netif_carrier_off(netdev); - netif_tx_stop_all_queues(netdev); - strcpy(netdev->name, "eth%d"); err = register_netdev(netdev); if (err) goto err_register; + /* carrier off reporting is important to ethtool even BEFORE open */ + netif_carrier_off(netdev); + #ifdef CONFIG_IGB_DCA if (dca_add_requester(&pdev->dev) == 0) { adapter->flags |= IGB_FLAG_DCA_ENABLED; @@ -1699,6 +1698,8 @@ static int igb_open(struct net_device *netdev) if (test_bit(__IGB_TESTING, &adapter->state)) return -EBUSY; + netif_carrier_off(netdev); + /* allocate transmit descriptors */ err = igb_setup_all_tx_resources(adapter); if (err)