• Eli Cohen's avatar
    IB/core: Add interfaces to control VF attributes · 50174a7f
    Eli Cohen authored
    Following the practice exercised for network devices which allow the PF
    net device to configure attributes of its virtual functions, we
    introduce the following functions to be used by IPoIB which is the
    network driver implementation for IB devices.
    
    ib_set_vf_link_state - set the policy for a VF link. More below.
    ib_get_vf_config - read configuration information of a VF
    ib_get_vf_stats - read VF statistics
    ib_set_vf_guid - set the node or port GUID of a VF
    
    Also add an indication in the device cap flags that indicates that this
    IB devices is based on a virtual function.
    
    A VF shares the physical port with the PF and other VFs. When setting
    the link state we have three options:
    
    1. Auto - in this mode, the virtual port follows the state of the
       physical port and becomes active only if the physical port's state is
       active. In all other cases it remains in a Down state.
    2. Down - sets the state of the virtual port to Down
    3. Up - causes the virtual port to transition into Initialize state if
       it was not already in this state. A virtualization aware subnet manager
       can then bring the state of the port into the Active state.
    Signed-off-by: default avatarEli Cohen <eli@mellanox.com>
    Reviewed-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
    Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
    50174a7f
verbs.c 46.6 KB