ACK: [Precise][PATCH] bonding: Bonding driver does not consider the gso_max_size/gso_max_segs setting of slave devices.

[Stefan Bader]

On 22.11.2012 07:19, Jesse Sung wrote:
> From: Sarveshwar Bandi <sarveshwar.bandi at emulex.com>
> 
> BugLink: https://launchpad.net/bugs/1078184
> 
> Patch sets the lowest gso_max_size and gso_max_segs values of the slave devices during enslave and detach.
> 
> Signed-off-by: Sarveshwar Bandi <sarveshwar.bandi at emulex.com>
> Acked-by: Eric Dumazet <edumazet at google.com>
> Signed-off-by: David S. Miller <davem at davemloft.net>
> (cherry picked from commit 0e376bd0b791ac6ac6bdb051492df0769c840848)
> 
> Signed-off-by: Wen-chien Jesse Sung <jesse.sung at canonical.com>
> ---
>  drivers/net/bonding/bond_main.c |    7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
> index 6c284d1..202ae34 100644
> --- a/drivers/net/bonding/bond_main.c
> +++ b/drivers/net/bonding/bond_main.c
> @@ -1366,6 +1366,8 @@ static void bond_compute_features(struct bonding *bond)
>  	struct net_device *bond_dev = bond->dev;
>  	u32 vlan_features = BOND_VLAN_FEATURES;
>  	unsigned short max_hard_header_len = ETH_HLEN;
> +	unsigned int gso_max_size = GSO_MAX_SIZE;
> +	u16 gso_max_segs = GSO_MAX_SEGS;
>  	int i;
>  
>  	read_lock(&bond->lock);
> @@ -1379,11 +1381,16 @@ static void bond_compute_features(struct bonding *bond)
>  
>  		if (slave->dev->hard_header_len > max_hard_header_len)
>  			max_hard_header_len = slave->dev->hard_header_len;
> +
> +		gso_max_size = min(gso_max_size, slave->dev->gso_max_size);
> +		gso_max_segs = min(gso_max_segs, slave->dev->gso_max_segs);
>  	}
>  
>  done:
>  	bond_dev->vlan_features = vlan_features;
>  	bond_dev->hard_header_len = max_hard_header_len;
> +	bond_dev->gso_max_segs = gso_max_segs;
> +	netif_set_gso_max_size(bond_dev, gso_max_size);
>  
>  	read_unlock(&bond->lock);
>  
> 

Ben, might be of interest for 3.2. Not sure you already got it.

-Stefan

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