• Hariprasad Shenai's avatar
    cxgb4: Stop Rx Queues before freeing it up · ebf4dc2b
    Hariprasad Shenai authored
    
    
    Stop all Ethernet RX Queues before freeing up various Ingress/Egress
    Queues, etc. We were seeing cases of Ingress Queues not getting serviced
    during the shutdown process leading to Ingress Paths jamming up through
    the chip and blocking the shutdown effort itself.
    
    One such case involved the Firmware sending a "Flush Token" through the
    ULP-TX -> ULP-RX path for an Ethernet TX Queue being freed in order to
    make sure there weren't any remaining TX Work Requests in the pipeline.
    But the return path was stalled by Ingress Data unable to be delivered to
    the Host because those Ingress Queues were no longer being serviced.
    
    Based on original work by Casey Leedom <leedom@chelsio.com>
    Signed-off-by: default avatarHariprasad Shenai <hariprasad@chelsio.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    ebf4dc2b
cxgb4.h 50.1 KB