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    be2net: replace polling with sleeping in the FW completion path · b7172414
    Sathya Perla 提交于
    The ndo_set_rx_mode() and ndo_add/del_vxlan_port() calls may be called with
    BHs disabled. The driver currently issues the required cmds to the FW in
    these contexts and polls on completions from the FW, while BHs remain
    disabled.  This can cause either packet loss or packet reception to be
    delayed on that CPU.
    
    This patch defers processing of the above cmds to a separate workqueue.
    With this change, FW cmds are now issued only in process context.
    Now that the FW cmds are issued only in process context, they can sleep
    waiting for a completion instead of polling. All the spin_lock_bh(mcc_lock)
    calls are now replaced with mutex calls.
    
    Also a new rx_filter_lock is now needed to protect the RX filtering fields
    like vids[] between be_vlan_add/rem_vid() and __be_set_rx_mode() contexts.
    Signed-off-by: NSathya Perla <sathya.perla@broadcom.com>
    Signed-off-by: NDavid S. Miller <davem@davemloft.net>
    b7172414
be.h 25.3 KB