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Message-ID: <CAHrpEqRbZjXkRzfrU4RLgeB_A0uz670b=yHHuY1+HpFnD31pvw@mail.gmail.com> Date: Sat, 27 Apr 2013 15:12:04 +0800 From: Frank Li <lznuaa@...il.com> To: Lucas Stach <l.stach@...gutronix.de> Cc: Fabio Estevam <festevam@...il.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, David Miller <davem@...emloft.net>, Frank Li <Frank.Li@...escale.com>, Shawn Guo <shawn.guo@...aro.org> Subject: Re: [PATCH 0/3] URGENT for 3.9: net: fec: revert NAPI introduction 2013/4/25 Lucas Stach <l.stach@...gutronix.de>: > s soon as the PHY signals a link down things start to fall apart. Sorry, I can't reproduce your problem. I use two MX6. Run below command in one MX6 > ping -f -i 0 -s 1400 10.192.242.122 unplug/plug cable at the other boards. >uname -a Linux freescale 3.9.0-rc8+#214 I base on net tree. I static analyse code. I know the possible problem. fec_enet_adjust_link run at delay work without hold any lock. fec_enet_adjust_link will call fec_restart reset BD queue. fec_resart will reset BD pointer. I think disable napi and TX queue by netif_stop_queue should resolve your problem. Can you give detail guide to reproduce your problem? libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 10/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full root@...escale /proc/irq/150$ libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full libphy: 2188000.ethernet:01 - Link is Down libphy: 2188000.ethernet:01 - Link is Up - 100/Full -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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