• Amir Vadai's avatar
    net/mlx4_en: num cores tx rings for every UP · bc6a4744
    Amir Vadai authored
    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: default avatarAmir Vadai <amirv@mellanox.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    bc6a4744
en_netdev.c 33.1 KB