Re: [PATCH net-next] net/mlx4_en: num cores tx rings for every UP

[David Miller <davem@davemloft.net>]

From: Amir Vadai <amirv@mellanox.com>
Date: Thu, 17 May 2012 13:58:10 +0300

> Change the TX ring scheme such that the number of rings for untagged packets
> and for tagged packets (per each of the vlan priorities) is the same, unlike
> the current situation where for tagged traffic there's one ring per priority
> and for untagged rings as the number of core.
> 
> Queue selection is done as follows:
> 
> If the mqprio qdisc is operates on the interface, such that the core networking
> code invoked the device setup_tc ndo callback, a mapping of skb->priority =>
> queue set is forced - for both, tagged and untagged traffic.
> 
> Else, the egress map skb->priority =>  User priority is used for tagged traffic, and
> all untagged traffic is sent through tx rings of UP 0.
> 
> The patch follows the convergence of discussing that issue with John Fastabend
> over this thread http://comments.gmane.org/gmane.linux.network/229877
> 
> Cc: John Fastabend <john.r.fastabend@intel.com>
> Cc: Liran Liss <liranl@mellanox.com>
> Signed-off-by: Amir Vadai <amirv@mellanox.com>

Applied, thanks.