From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Xiaoming.Zhang" Subject: Re: [patch 10/21] driver/net/skge.c: restart the interface when it's options or pauseparam is set Date: Fri, 26 Sep 2008 14:28:05 +0800 Message-ID: <200809261428.06275.Xiaoming.Zhang@resilience.com> References: <200809222152.m8MLqHXf031966@imap1.linux-foundation.org> <20080923164718.787237e2@extreme> Mime-Version: 1.0 Content-Type: Multipart/Mixed; boundary="Boundary-00=_2DI3I3eltUKg/pK" Cc: akpm@linux-foundation.org, jeff@garzik.org, netdev@vger.kernel.org To: Stephen Hemminger Return-path: Received: from ex2.resilience.com ([207.47.19.10]:18235 "EHLO ex2.resilience.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752749AbYIZGop (ORCPT ); Fri, 26 Sep 2008 02:44:45 -0400 In-Reply-To: <20080923164718.787237e2@extreme> Sender: netdev-owner@vger.kernel.org List-ID: --Boundary-00=_2DI3I3eltUKg/pK Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline On Wednesday 24 September 2008 07:47, Stephen Hemminger wrote: > On Mon, 22 Sep 2008 14:52:17 -0700 > > akpm@linux-foundation.org wrote: > > From: "Xiaoming.Zhang" > > > > We have an issue of the skge driver: The card won't work when it's > > options are changed. Here's the hardware info: > > > > # lspci -v > > 05:04.0 Ethernet controller: Marvell Technology Group Ltd. 88E8001 > > Gigabit Ethernet Controller (rev 13) Subsystem: Marvell Technology Group > > Ltd. Marvell RDK-8001 Flags: bus master, 66MHz, medium devsel, latency > > 32, IRQ 16 Memory at d042c000 (32-bit, non-prefetchable) [size=16K] I/O > > ports at d000 [size=256] > > [virtual] Expansion ROM at 20400000 [disabled] [size=128K] > > Capabilities: [48] Power Management version 2 > > Capabilities: [50] Vital Product Data > > > > The happens in both Linux-2.6.26(skge version 1.23) and RHEL5.2(skge > > version 1.6). > > > > For example, at first it is set to "speed 1000 duplex full auto-neg on" > > and it works, then run > > > > ethtool -s autoneg off > > or ethtool -s speed 100 duplex full autoneg off > > > > Then it will stop working. After that if we restart the interface: > > > > ifconifg down > > ifconfig up > > > > It will work again. And `ethtool -A' has the same issue. > > > > So we think after setting the options, the interface should be restarted. > > > > Signed-off-by: Zhang Xiaoming > > Cc: Stephen Hemminger > > Cc: Jeff Garzik > > Signed-off-by: Andrew Morton > > --- > > > > drivers/net/skge.c | 12 ++++++++---- > > 1 file changed, 8 insertions(+), 4 deletions(-) > > > > diff -puN > > drivers/net/skge.c~driver-net-skgec-restart-the-interface-when-its-option > >s-or-pauseparam-is-set drivers/net/skge.c --- > > a/drivers/net/skge.c~driver-net-skgec-restart-the-interface-when-its-opti > >ons-or-pauseparam-is-set +++ a/drivers/net/skge.c > > @@ -353,8 +353,10 @@ static int skge_set_settings(struct net_ > > skge->autoneg = ecmd->autoneg; > > skge->advertising = ecmd->advertising; > > > > - if (netif_running(dev)) > > - skge_phy_reset(skge); > > + if (netif_running(dev)) { > > + skge_down(dev); > > + skge_up(dev); > > + } > > > > return (0); > > } > > @@ -595,8 +597,10 @@ static int skge_set_pauseparam(struct ne > > skge->flow_control = FLOW_MODE_NONE; > > } > > > > - if (netif_running(dev)) > > - skge_phy_reset(skge); > > + if (netif_running(dev)) { > > + skge_down(dev); > > + skge_up(dev); > > + } > > > > return 0; > > } > > Since skge_up can fail because of out of memory, this code needs to > check the return value. And then if it fails the "limbo state" needs > to be handled in skge_down. How about like this? It is tested. Thank you. Signed-off-by: Zhang Xiaoming --- drivers/net/skge.c.orig 2008-09-26 05:36:07.000000000 +0800 +++ drivers/net/skge.c 2008-09-26 05:35:50.000000000 +0800 @@ -319,6 +319,7 @@ static int skge_set_settings(struct net_ struct skge_port *skge = netdev_priv(dev); const struct skge_hw *hw = skge->hw; u32 supported = skge_supported_modes(hw); + int err = 0; if (ecmd->autoneg == AUTONEG_ENABLE) { ecmd->advertising = supported; @@ -367,8 +368,14 @@ static int skge_set_settings(struct net_ skge->autoneg = ecmd->autoneg; skge->advertising = ecmd->advertising; - if (netif_running(dev)) - skge_phy_reset(skge); + if (netif_running(dev)) { + skge_down(dev); + err = skge_up(dev); + if (err) { + dev_close(dev); + return err; + } + } return (0); } @@ -593,6 +600,7 @@ static int skge_set_pauseparam(struct ne { struct skge_port *skge = netdev_priv(dev); struct ethtool_pauseparam old; + int err = 0; skge_get_pauseparam(dev, &old); @@ -609,8 +617,14 @@ static int skge_set_pauseparam(struct ne skge->flow_control = FLOW_MODE_NONE; } - if (netif_running(dev)) - skge_phy_reset(skge); + if (netif_running(dev)) { + skge_down(dev); + err = skge_up(dev); + if (err) { + dev_close(dev); + return err; + } + } return 0; } -- Have fun, Xiaoming (Mark) Zhang --Boundary-00=_2DI3I3eltUKg/pK Content-Type: text/x-diff; charset="iso-8859-1"; name="skge.patch" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="skge.patch" --- drivers/net/skge.c.orig 2008-09-26 05:36:07.000000000 +0800 +++ drivers/net/skge.c 2008-09-26 05:35:50.000000000 +0800 @@ -319,6 +319,7 @@ static int skge_set_settings(struct net_ struct skge_port *skge = netdev_priv(dev); const struct skge_hw *hw = skge->hw; u32 supported = skge_supported_modes(hw); + int err = 0; if (ecmd->autoneg == AUTONEG_ENABLE) { ecmd->advertising = supported; @@ -367,8 +368,14 @@ static int skge_set_settings(struct net_ skge->autoneg = ecmd->autoneg; skge->advertising = ecmd->advertising; - if (netif_running(dev)) - skge_phy_reset(skge); + if (netif_running(dev)) { + skge_down(dev); + err = skge_up(dev); + if (err) { + dev_close(dev); + return err; + } + } return (0); } @@ -593,6 +600,7 @@ static int skge_set_pauseparam(struct ne { struct skge_port *skge = netdev_priv(dev); struct ethtool_pauseparam old; + int err = 0; skge_get_pauseparam(dev, &old); @@ -609,8 +617,14 @@ static int skge_set_pauseparam(struct ne skge->flow_control = FLOW_MODE_NONE; } - if (netif_running(dev)) - skge_phy_reset(skge); + if (netif_running(dev)) { + skge_down(dev); + err = skge_up(dev); + if (err) { + dev_close(dev); + return err; + } + } return 0; } --Boundary-00=_2DI3I3eltUKg/pK--