[PATCH] kni: fix igb and ixgbe kni ethtool get_link op

[PATCH] kni: fix igb and ixgbe kni ethtool get_link op

[Shelton Chia]

igb and ixgbe's link detected always return yes, fix get_link func
refer to get_settings, it works correctly for my i350 and 82599es nic.

Signed-off-by: Shelton Chia <jiaxt-ZrUwlr9QczFWk0Htik3J/w@public.gmane.org>
---
 .../linuxapp/kni/ethtool/igb/igb_ethtool.c         | 18 ++++++---------
 .../linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c     | 26 +++++++++++++++++++++-
 2 files changed, 32 insertions(+), 12 deletions(-)

diff --git a/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c b/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
index f3c48b2..5457f48 100644
--- a/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
+++ b/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
@@ -383,19 +383,15 @@ static int igb_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 static u32 igb_get_link(struct net_device *netdev)
 {
 	struct igb_adapter *adapter = netdev_priv(netdev);
-	struct e1000_mac_info *mac = &adapter->hw.mac;
+	struct e1000_hw *hw = &adapter->hw;
+	u32 status;
 
-	/*
-	 * If the link is not reported up to netdev, interrupts are disabled,
-	 * and so the physical link state may have changed since we last
-	 * looked. Set get_link_status to make sure that the true link
-	 * state is interrogated, rather than pulling a cached and possibly
-	 * stale link state from the driver.
-	 */
-	if (!netif_carrier_ok(netdev))
-		mac->get_link_status = 1;
+	status = E1000_READ_REG(hw, E1000_STATUS);
 
-	return igb_has_link(adapter);
+	if (status & E1000_STATUS_LU) 
+		return 1;
+	else
+		return 0;
 }
 
 static void igb_get_pauseparam(struct net_device *netdev,
diff --git a/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c b/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
index 11472bd..184b14f 100644
--- a/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
+++ b/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
@@ -801,6 +801,30 @@ static void ixgbe_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
 	regs_buff[1128] = IXGBE_READ_REG(hw, IXGBE_MFLCN);
 }
 
+static u32 ixgbe_get_link(struct net_device *netdev)
+{
+	struct ixgbe_adapter *adapter = netdev_priv(netdev);
+	struct ixgbe_hw *hw = &adapter->hw;
+	u32 link_speed = 0;
+	bool link_up;
+
+	if (!in_interrupt()) {
+		hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
+	} else {
+		/*
+		 * this case is a special workaround for RHEL5 bonding
+		 * that calls this routine from interrupt context
+		 */
+		link_speed = adapter->link_speed;
+		link_up = adapter->link_up;
+	}
+
+	if (link_up) 
+		return 1;
+	else 
+		return 0;
+}
+
 static int ixgbe_get_eeprom_len(struct net_device *netdev)
 {
 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
@@ -2838,7 +2862,7 @@ struct ethtool_ops ixgbe_ethtool_ops = {
 	.get_wol		= ixgbe_get_wol,
 	.set_wol		= ixgbe_set_wol,
 	.nway_reset		= ixgbe_nway_reset,
-	.get_link		= ethtool_op_get_link,
+	.get_link		= ixgbe_get_link,
 	.get_eeprom_len		= ixgbe_get_eeprom_len,
 	.get_eeprom		= ixgbe_get_eeprom,
 	.set_eeprom		= ixgbe_set_eeprom,
-- 
2.3.5

Re: [PATCH] kni: fix igb and ixgbe kni ethtool get_link op

[Thomas Monjalon]

Helin,
Do you have time to check this patch, please?

2015-04-03 23:18, Shelton Chia:
> igb and ixgbe's link detected always return yes, fix get_link func
> refer to get_settings, it works correctly for my i350 and 82599es nic.
> 
> Signed-off-by: Shelton Chia <jiaxt-ZrUwlr9QczFWk0Htik3J/w@public.gmane.org>

Re: [PATCH] kni: fix igb and ixgbe kni ethtool get_link op

[Zhang, Helin]

Hi Chia

> -----Original Message-----
> From: dev [mailto:dev-bounces-VfR2kkLFssw@public.gmane.org] On Behalf Of Shelton Chia
> Sent: Friday, April 3, 2015 11:19 PM
> To: dev-VfR2kkLFssw@public.gmane.org
> Subject: [dpdk-dev] [PATCH] kni: fix igb and ixgbe kni ethtool get_link op
> 
> igb and ixgbe's link detected always return yes, fix get_link func refer to
> get_settings, it works correctly for my i350 and 82599es nic.
Could you help to add more detailed description of why we need these code changes? Thanks!
> 
> Signed-off-by: Shelton Chia <jiaxt-ZrUwlr9QczFWk0Htik3J/w@public.gmane.org>
> ---
>  .../linuxapp/kni/ethtool/igb/igb_ethtool.c         | 18 ++++++---------
>  .../linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c     | 26
> +++++++++++++++++++++-
>  2 files changed, 32 insertions(+), 12 deletions(-)
> 
> diff --git a/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
> b/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
> index f3c48b2..5457f48 100644
> --- a/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
> +++ b/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
> @@ -383,19 +383,15 @@ static int igb_set_settings(struct net_device
> *netdev, struct ethtool_cmd *ecmd)  static u32 igb_get_link(struct
> net_device *netdev)  {
>  	struct igb_adapter *adapter = netdev_priv(netdev);
> -	struct e1000_mac_info *mac = &adapter->hw.mac;
> +	struct e1000_hw *hw = &adapter->hw;
> +	u32 status;
> 
> -	/*
> -	 * If the link is not reported up to netdev, interrupts are disabled,
> -	 * and so the physical link state may have changed since we last
> -	 * looked. Set get_link_status to make sure that the true link
> -	 * state is interrogated, rather than pulling a cached and possibly
> -	 * stale link state from the driver.
> -	 */
> -	if (!netif_carrier_ok(netdev))
> -		mac->get_link_status = 1;
> +	status = E1000_READ_REG(hw, E1000_STATUS);
Can ' check_for_link ' be used for checking the link here? It needs to support
all possible link types.

> 
> -	return igb_has_link(adapter);
> +	if (status & E1000_STATUS_LU)
> +		return 1;
> +	else
> +		return 0;
>  }
> 
>  static void igb_get_pauseparam(struct net_device *netdev, diff --git
> a/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
> b/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
> index 11472bd..184b14f 100644
> --- a/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
> +++ b/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
> @@ -801,6 +801,30 @@ static void ixgbe_get_regs(struct net_device *netdev,
> struct ethtool_regs *regs,
>  	regs_buff[1128] = IXGBE_READ_REG(hw, IXGBE_MFLCN);  }
> 
> +static u32 ixgbe_get_link(struct net_device *netdev) {
> +	struct ixgbe_adapter *adapter = netdev_priv(netdev);
> +	struct ixgbe_hw *hw = &adapter->hw;
> +	u32 link_speed = 0;
> +	bool link_up;
> +
> +	if (!in_interrupt()) {
> +		hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
As done in kernel driver function ' ixgbe_watchdog_update_link ()', more checks
may be needed.

Regards,
Helin

> +	} else {
> +		/*
> +		 * this case is a special workaround for RHEL5 bonding
> +		 * that calls this routine from interrupt context
> +		 */
> +		link_speed = adapter->link_speed;
> +		link_up = adapter->link_up;
> +	}
> +
> +	if (link_up)
> +		return 1;
> +	else
> +		return 0;
> +}
> +
>  static int ixgbe_get_eeprom_len(struct net_device *netdev)  {
>  	struct ixgbe_adapter *adapter = netdev_priv(netdev); @@ -2838,7
> +2862,7 @@ struct ethtool_ops ixgbe_ethtool_ops = {
>  	.get_wol		= ixgbe_get_wol,
>  	.set_wol		= ixgbe_set_wol,
>  	.nway_reset		= ixgbe_nway_reset,
> -	.get_link		= ethtool_op_get_link,
> +	.get_link		= ixgbe_get_link,
>  	.get_eeprom_len		= ixgbe_get_eeprom_len,
>  	.get_eeprom		= ixgbe_get_eeprom,
>  	.set_eeprom		= ixgbe_set_eeprom,
> --
> 2.3.5

Re: [PATCH] kni: fix igb and ixgbe kni ethtool get_link op

[贾学涛]

Hi Helin,
No matter the cable is plugged or not, the return value of link detected 
is yes when I run ethtool on a kni interface.
But the return values of speed and duplex are correct. So I just copy 
the link detected codes of get_settings op.
On 05/04/2015 04:55 PM, Zhang, Helin wrote:
> Hi Chia
>
>> -----Original Message-----
>> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Shelton Chia
>> Sent: Friday, April 3, 2015 11:19 PM
>> To: dev@dpdk.org
>> Subject: [dpdk-dev] [PATCH] kni: fix igb and ixgbe kni ethtool get_link op
>>
>> igb and ixgbe's link detected always return yes, fix get_link func refer to
>> get_settings, it works correctly for my i350 and 82599es nic.
> Could you help to add more detailed description of why we need these code changes? Thanks!
>> Signed-off-by: Shelton Chia <jiaxt@sinogrid.com>
>> ---
>>   .../linuxapp/kni/ethtool/igb/igb_ethtool.c         | 18 ++++++---------
>>   .../linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c     | 26
>> +++++++++++++++++++++-
>>   2 files changed, 32 insertions(+), 12 deletions(-)
>>
>> diff --git a/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
>> b/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
>> index f3c48b2..5457f48 100644
>> --- a/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
>> +++ b/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
>> @@ -383,19 +383,15 @@ static int igb_set_settings(struct net_device
>> *netdev, struct ethtool_cmd *ecmd)  static u32 igb_get_link(struct
>> net_device *netdev)  {
>>   	struct igb_adapter *adapter = netdev_priv(netdev);
>> -	struct e1000_mac_info *mac = &adapter->hw.mac;
>> +	struct e1000_hw *hw = &adapter->hw;
>> +	u32 status;
>>
>> -	/*
>> -	 * If the link is not reported up to netdev, interrupts are disabled,
>> -	 * and so the physical link state may have changed since we last
>> -	 * looked. Set get_link_status to make sure that the true link
>> -	 * state is interrogated, rather than pulling a cached and possibly
>> -	 * stale link state from the driver.
>> -	 */
>> -	if (!netif_carrier_ok(netdev))
>> -		mac->get_link_status = 1;
>> +	status = E1000_READ_REG(hw, E1000_STATUS);
> Can ' check_for_link ' be used for checking the link here? It needs to support
> all possible link types.
>
>> -	return igb_has_link(adapter);
>> +	if (status & E1000_STATUS_LU)
>> +		return 1;
>> +	else
>> +		return 0;
>>   }
>>
>>   static void igb_get_pauseparam(struct net_device *netdev, diff --git
>> a/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
>> b/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
>> index 11472bd..184b14f 100644
>> --- a/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
>> +++ b/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
>> @@ -801,6 +801,30 @@ static void ixgbe_get_regs(struct net_device *netdev,
>> struct ethtool_regs *regs,
>>   	regs_buff[1128] = IXGBE_READ_REG(hw, IXGBE_MFLCN);  }
>>
>> +static u32 ixgbe_get_link(struct net_device *netdev) {
>> +	struct ixgbe_adapter *adapter = netdev_priv(netdev);
>> +	struct ixgbe_hw *hw = &adapter->hw;
>> +	u32 link_speed = 0;
>> +	bool link_up;
>> +
>> +	if (!in_interrupt()) {
>> +		hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
> As done in kernel driver function ' ixgbe_watchdog_update_link ()', more checks
> may be needed.
>
> Regards,
> Helin
>
>> +	} else {
>> +		/*
>> +		 * this case is a special workaround for RHEL5 bonding
>> +		 * that calls this routine from interrupt context
>> +		 */
>> +		link_speed = adapter->link_speed;
>> +		link_up = adapter->link_up;
>> +	}
>> +
>> +	if (link_up)
>> +		return 1;
>> +	else
>> +		return 0;
>> +}
>> +
>>   static int ixgbe_get_eeprom_len(struct net_device *netdev)  {
>>   	struct ixgbe_adapter *adapter = netdev_priv(netdev); @@ -2838,7
>> +2862,7 @@ struct ethtool_ops ixgbe_ethtool_ops = {
>>   	.get_wol		= ixgbe_get_wol,
>>   	.set_wol		= ixgbe_set_wol,
>>   	.nway_reset		= ixgbe_nway_reset,
>> -	.get_link		= ethtool_op_get_link,
>> +	.get_link		= ixgbe_get_link,
>>   	.get_eeprom_len		= ixgbe_get_eeprom_len,
>>   	.get_eeprom		= ixgbe_get_eeprom,
>>   	.set_eeprom		= ixgbe_set_eeprom,
>> --
>> 2.3.5

-- 
贾学涛
信诺瑞得西安研发中心

Re: [PATCH] kni: fix igb and ixgbe kni ethtool get_link op

[Zhang, Helin]

Any response to my comments? Did I miss anything?

- Helin

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Zhang, Helin
> Sent: Monday, May 4, 2015 4:56 PM
> To: Shelton Chia; dev@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH] kni: fix igb and ixgbe kni ethtool get_link op
> 
> Hi Chia
> 
> > -----Original Message-----
> > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Shelton Chia
> > Sent: Friday, April 3, 2015 11:19 PM
> > To: dev@dpdk.org
> > Subject: [dpdk-dev] [PATCH] kni: fix igb and ixgbe kni ethtool
> > get_link op
> >
> > igb and ixgbe's link detected always return yes, fix get_link func
> > refer to get_settings, it works correctly for my i350 and 82599es nic.
> Could you help to add more detailed description of why we need these code
> changes? Thanks!
> >
> > Signed-off-by: Shelton Chia <jiaxt@sinogrid.com>
> > ---
> >  .../linuxapp/kni/ethtool/igb/igb_ethtool.c         | 18 ++++++---------
> >  .../linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c     | 26
> > +++++++++++++++++++++-
> >  2 files changed, 32 insertions(+), 12 deletions(-)
> >
> > diff --git a/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
> > b/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
> > index f3c48b2..5457f48 100644
> > --- a/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
> > +++ b/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_ethtool.c
> > @@ -383,19 +383,15 @@ static int igb_set_settings(struct net_device
> > *netdev, struct ethtool_cmd *ecmd)  static u32 igb_get_link(struct
> > net_device *netdev)  {
> >  	struct igb_adapter *adapter = netdev_priv(netdev);
> > -	struct e1000_mac_info *mac = &adapter->hw.mac;
> > +	struct e1000_hw *hw = &adapter->hw;
> > +	u32 status;
> >
> > -	/*
> > -	 * If the link is not reported up to netdev, interrupts are disabled,
> > -	 * and so the physical link state may have changed since we last
> > -	 * looked. Set get_link_status to make sure that the true link
> > -	 * state is interrogated, rather than pulling a cached and possibly
> > -	 * stale link state from the driver.
> > -	 */
> > -	if (!netif_carrier_ok(netdev))
> > -		mac->get_link_status = 1;
> > +	status = E1000_READ_REG(hw, E1000_STATUS);
> Can ' check_for_link ' be used for checking the link here? It needs to support all
> possible link types.
> 
> >
> > -	return igb_has_link(adapter);
> > +	if (status & E1000_STATUS_LU)
> > +		return 1;
> > +	else
> > +		return 0;
> >  }
> >
> >  static void igb_get_pauseparam(struct net_device *netdev, diff --git
> > a/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
> > b/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
> > index 11472bd..184b14f 100644
> > --- a/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
> > +++ b/lib/librte_eal/linuxapp/kni/ethtool/ixgbe/ixgbe_ethtool.c
> > @@ -801,6 +801,30 @@ static void ixgbe_get_regs(struct net_device
> > *netdev, struct ethtool_regs *regs,
> >  	regs_buff[1128] = IXGBE_READ_REG(hw, IXGBE_MFLCN);  }
> >
> > +static u32 ixgbe_get_link(struct net_device *netdev) {
> > +	struct ixgbe_adapter *adapter = netdev_priv(netdev);
> > +	struct ixgbe_hw *hw = &adapter->hw;
> > +	u32 link_speed = 0;
> > +	bool link_up;
> > +
> > +	if (!in_interrupt()) {
> > +		hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
> As done in kernel driver function ' ixgbe_watchdog_update_link ()', more checks
> may be needed.
> 
> Regards,
> Helin
> 
> > +	} else {
> > +		/*
> > +		 * this case is a special workaround for RHEL5 bonding
> > +		 * that calls this routine from interrupt context
> > +		 */
> > +		link_speed = adapter->link_speed;
> > +		link_up = adapter->link_up;
> > +	}
> > +
> > +	if (link_up)
> > +		return 1;
> > +	else
> > +		return 0;
> > +}
> > +
> >  static int ixgbe_get_eeprom_len(struct net_device *netdev)  {
> >  	struct ixgbe_adapter *adapter = netdev_priv(netdev); @@ -2838,7
> > +2862,7 @@ struct ethtool_ops ixgbe_ethtool_ops = {
> >  	.get_wol		= ixgbe_get_wol,
> >  	.set_wol		= ixgbe_set_wol,
> >  	.nway_reset		= ixgbe_nway_reset,
> > -	.get_link		= ethtool_op_get_link,
> > +	.get_link		= ixgbe_get_link,
> >  	.get_eeprom_len		= ixgbe_get_eeprom_len,
> >  	.get_eeprom		= ixgbe_get_eeprom,
> >  	.set_eeprom		= ixgbe_set_eeprom,
> > --
> > 2.3.5