From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [net-next-2.6 PATCH 2/5] ixgb: fix link down initial state Date: Fri, 17 Apr 2009 23:44:29 -0700 Message-ID: <20090418064429.4328.12425.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 qmta11.emeryville.ca.mail.comcast.net ([76.96.27.211]:47113 "EHLO QMTA11.emeryville.ca.mail.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751949AbZDRGob (ORCPT ); Sat, 18 Apr 2009 02:44:31 -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. in addition this driver appeared to need a netif_start_queue at the end of open. Signed-off-by: Jesse Brandeburg Reported-by: Andrew Lutomirski Signed-off-by: Jeff Kirsher --- drivers/net/ixgb/ixgb_main.c | 8 +++++--- 1 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c index 4a0826b..ff741ca 100644 --- a/drivers/net/ixgb/ixgb_main.c +++ b/drivers/net/ixgb/ixgb_main.c @@ -471,10 +471,8 @@ ixgb_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (err) goto err_register; - /* we're going to reset, so assume we have no link for now */ - + /* carrier off reporting is important to ethtool even BEFORE open */ netif_carrier_off(netdev); - netif_stop_queue(netdev); DPRINTK(PROBE, INFO, "Intel(R) PRO/10GbE Network Connection\n"); ixgb_check_options(adapter); @@ -592,6 +590,8 @@ ixgb_open(struct net_device *netdev) if (err) goto err_setup_tx; + netif_carrier_off(netdev); + /* allocate receive descriptors */ err = ixgb_setup_rx_resources(adapter); @@ -602,6 +602,8 @@ ixgb_open(struct net_device *netdev) if (err) goto err_up; + netif_start_queue(netdev); + return 0; err_up: