[net-next] ip_tunnel: Report Rx dropped in ip_tunnel_get_stats64

The rx_dropped stat wasn't being reported when ip_tunnel_get_stats64 was
called.  This was leading to some confusing results in my debug as I was
seeing rx_errors increment but no other value which pointed me toward the
type of error being seen.

This change corrects that by copying the value over from
dev->stats.rx_dropped inot tot->rx_dropped.

Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
---
 net/ipv4/ip_tunnel_core.c |    1 +
 1 file changed, 1 insertion(+)


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On Thu, 2015-05-14 at 13:04 -0700, Alexander Duyck wrote:
> The rx_dropped stat wasn't being reported when ip_tunnel_get_stats64 was
> called.  This was leading to some confusing results in my debug as I was
> seeing rx_errors increment but no other value which pointed me toward the
> type of error being seen.
> 
> This change corrects that by copying the value over from
> dev->stats.rx_dropped inot tot->rx_dropped.
> 
> Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
> ---
>  net/ipv4/ip_tunnel_core.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c
> index 3998b1822d85..a6a980680b8a 100644
> --- a/net/ipv4/ip_tunnel_core.c
> +++ b/net/ipv4/ip_tunnel_core.c
> @@ -191,6 +191,7 @@ struct rtnl_link_stats64 *ip_tunnel_get_stats64(struct net_device *dev,
>  	tot->rx_fifo_errors = dev->stats.rx_fifo_errors;
>  	tot->rx_length_errors = dev->stats.rx_length_errors;
>  	tot->rx_frame_errors = dev->stats.rx_frame_errors;
> +	tot->rx_dropped = dev->stats.rx_dropped;
>  	tot->rx_errors = dev->stats.rx_errors;
>  
>  	tot->tx_fifo_errors = dev->stats.tx_fifo_errors;

Or use netdev_stats_to_stats64() to remove all these copies, as we
obviously can miss some of them.

-> reduce code size.




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On 05/14/2015 01:56 PM, Eric Dumazet wrote:
> On Thu, 2015-05-14 at 13:04 -0700, Alexander Duyck wrote:
>> The rx_dropped stat wasn't being reported when ip_tunnel_get_stats64 was
>> called.  This was leading to some confusing results in my debug as I was
>> seeing rx_errors increment but no other value which pointed me toward the
>> type of error being seen.
>>
>> This change corrects that by copying the value over from
>> dev->stats.rx_dropped inot tot->rx_dropped.
>>
>> Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
>> ---
>>   net/ipv4/ip_tunnel_core.c |    1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c
>> index 3998b1822d85..a6a980680b8a 100644
>> --- a/net/ipv4/ip_tunnel_core.c
>> +++ b/net/ipv4/ip_tunnel_core.c
>> @@ -191,6 +191,7 @@ struct rtnl_link_stats64 *ip_tunnel_get_stats64(struct net_device *dev,
>>   	tot->rx_fifo_errors = dev->stats.rx_fifo_errors;
>>   	tot->rx_length_errors = dev->stats.rx_length_errors;
>>   	tot->rx_frame_errors = dev->stats.rx_frame_errors;
>> +	tot->rx_dropped = dev->stats.rx_dropped;
>>   	tot->rx_errors = dev->stats.rx_errors;
>>   
>>   	tot->tx_fifo_errors = dev->stats.tx_fifo_errors;
> Or use netdev_stats_to_stats64() to remove all these copies, as we
> obviously can miss some of them.
>
> -> reduce code size.

Good point.  I'll clean this up and submit a v2.

Thanks.

- Alex
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