• Amitkumar Karwar's avatar
    cfg80211/nl80211: Add packet coalesce support · be29b99a
    Amitkumar Karwar authored
    
    
    In most cases, host that receives IPv4 and IPv6 multicast/broadcast
    packets does not do anything with these packets. Therefore the
    reception of these unwanted packets causes unnecessary processing
    and power consumption.
    
    Packet coalesce feature helps to reduce number of received
    interrupts to host by buffering these packets in firmware/hardware
    for some predefined time. Received interrupt will be generated when
    one of the following events occur.
    a) Expiration of hardware timer whose expiration time is set to
    maximum coalescing delay of matching coalesce rule.
    b) Coalescing buffer in hardware reaches it's limit.
    c) Packet doesn't match any of the configured coalesce rules.
    
    This patch adds set/get configuration support for packet coalesce.
    User needs to configure following parameters for creating a coalesce
    rule.
    a) Maximum coalescing delay
    b) List of packet patterns which needs to be matched
    c) Condition for coalescence. pattern 'match' or 'no match'
    Multiple such rules can be created.
    
    This feature needs to be advertised during driver initialization.
    Drivers are supposed to do required firmware/hardware settings based
    on user configuration.
    Signed-off-by: default avatarAmitkumar Karwar <akarwar@marvell.com>
    Signed-off-by: default avatarBing Zhao <bzhao@marvell.com>
    [fix kernel-doc, change free function, fix copy/paste error]
    Signed-off-by: default avatarJohannes Berg <johannes@sipsolutions.net>
    be29b99a
nl80211.h 3.25 KB