• Dhananjay Phadke's avatar
    netxen: cut-through rx changes · d9e651bc
    Dhananjay Phadke authored
    NX3031 supports cut-through operation where ingress packets are
    directly dma'ed into host buffers to reduce latency.
    
    This requires larger dma buffers (2kb) and different alignemnt.
    
    The buffer posting logic is changed a bit. The free rx buffers
    are maintained in linked list, since the received reference
    handles can be out of order. However rx descriptors are still
    posted sequentially, indexed by producer.
    Signed-off-by: default avatarDhananjay Phadke <dhananjay@netxen.com>
    Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
    d9e651bc
netxen_nic_main.c 43.3 KB