On 02/23/2011 06:13 PM, Andrian Nord wrote:
> On Mon, Feb 21, 2011 at 05:07:31PM +0100, Daniel Lezcano wrote:
>> I Cc'ed the netdev mailing list and Patrick in case my analysis is wrong
>> or incomplete.
> I'm confirming, that this happens only when macvlan's are onto dummy net
> device. In case of some physical interface under macvlan there is no lost
> packages and no broken checksums.
I did some tests with a 2.6.35 kernel version and it seems the checksum
errors do not appear.
I noticed there are some changes in the dummy setup function:
dev->features |= NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO;
dev->features |= NETIF_F_NO_CSUM | NETIF_F_HIGHDMA | NETIF_F_LLTX;
May be that was introduced by commit:
commit 6d81f41c58c69ddde497e9e640ba5805aa26e78c
Author: Eric Dumazet <eric.duma...@gmail.com>
Date: Mon Sep 27 20:50:33 2010 +0000
dummy: percpu stats and lockless xmit
Converts dummy network device driver to :
- percpu stats
- 64bit stats
- lockless xmit (NETIF_F_LLTX)
- performance features added (NETIF_F_SG | NETIF_F_FRAGLIST |
NETIF_F_TSO | NETIF_F_NO_CSUM | NETIF_F_HIGHDMA)
Signed-off-by: Eric Dumazet <eric.duma...@gmail.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Eric,
Andrian is observing, with a couple of macvlan (in bridge mode) on top
of a dummy interface, a lot of checksums error and packets drop.
Each macvlan is in a different network namespace and the dummy interface
is in the init_net.
Any ideas ?
------------------------------------------------------------------------------
Free Software Download: Index, Search & Analyze Logs and other IT data in
Real-Time with Splunk. Collect, index and harness all the fast moving IT data
generated by your applications, servers and devices whether physical, virtual
or in the cloud. Deliver compliance at lower cost and gain new business
insights. http://p.sf.net/sfu/splunk-dev2dev
_______________________________________________
Lxc-users mailing list
Lxc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/lxc-users
