netdev - Re: 64bit counters: iproute(netlink) vs ifconfig

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Date:	Wed, 13 Feb 2008 12:35:09 -0800
From:	Stephen Hemminger <shemminger@...ux-foundation.org>
To:	netdev@...r.kernel.org
Subject:  Re: 64bit counters: iproute(netlink) vs ifconfig

On Wed, 13 Feb 2008 21:20:59 +0100 (CET)
Krzysztof Oledzki <olel@....pl> wrote:

> Hello,
> 
> Just discovered that counters returned by the "ip" tool are truncated:
> 
> # ip -s link show bond0
> 1: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue
>      link/ether 00:1d:09:67:6e:2f brd ff:ff:ff:ff:ff:ff
>      RX: bytes  packets  errors  dropped overrun mcast
>      2485605521 9010211  0       0       0       6
>      TX: bytes  packets  errors  dropped carrier collsns
>      3023237974 9345397  0       0       0       0
> 
> # ifconfig bond0
> bond0     Link encap:Ethernet  HWaddr 00:1D:09:67:6E:2F
>            inet addr:192.168.152.62  Bcast:192.168.152.255  Mask:255.255.255.0
>            inet6 addr: fe80::21d:9ff:fe67:6e2f/64 Scope:Link
>            UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
>            RX packets:9010367 errors:0 dropped:351 overruns:0 frame:0
>            TX packets:9345521 errors:0 dropped:0 overruns:0 carrier:0
>            collisions:0 txqueuelen:0
>            RX bytes:2485631020 (2370.4 Mb)  TX bytes:7318232294 (6979.2 Mb)
> 
> Is it possible to get 64-bit counters in ip via netlink? Struct 
> rtnl_link_stats does not look very optimistic, as it has rx_bytes/tx_bytes 
> defined with __u32.
> 
> Best regards,
> 
>  				Krzysztof Olędzki

The problem is the kernel binary API is now hard coded to 32 bit values.

-- 
Stephen Hemminger <stephen.hemminger@...tta.com>


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