From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [net-next-2.6 PATCH 4/5] e1000e: indicate link down at load Date: Fri, 17 Apr 2009 23:44:34 -0700 Message-ID: <20090418064433.4328.58288.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 qmta10.emeryville.ca.mail.comcast.net ([76.96.30.17]:60884 "EHLO QMTA10.emeryville.ca.mail.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753935AbZDRGog (ORCPT ); Sat, 18 Apr 2009 02:44:36 -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. Andy tested this for e1000e and confirmed it was working for him. see thread: http://marc.info/?l=linux-netdev&m=123946479705636&w=2 Signed-off-by: Jesse Brandeburg Tested-by: Andy Lutomirski Signed-off-by: Jeff Kirsher --- drivers/net/e1000e/netdev.c | 9 +++++---- 1 files changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c index 1693ed1..c0ff550 100644 --- a/drivers/net/e1000e/netdev.c +++ b/drivers/net/e1000e/netdev.c @@ -3072,6 +3072,8 @@ static int e1000_open(struct net_device *netdev) if (test_bit(__E1000_TESTING, &adapter->state)) return -EBUSY; + netif_carrier_off(netdev); + /* allocate transmit descriptors */ err = e1000e_setup_tx_resources(adapter); if (err) @@ -5037,15 +5039,14 @@ static int __devinit e1000_probe(struct pci_dev *pdev, if (!(adapter->flags & FLAG_HAS_AMT)) e1000_get_hw_control(adapter); - /* tell the stack to leave us alone until e1000_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); + e1000_print_device_info(adapter); return 0;