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    tipc: check session number before accepting link protocol messages · 7ea817f4
    Jon Maloy 提交于
    In some virtual environments we observe a significant higher number of
    packet reordering and delays than we have been used to traditionally.
    
    This makes it necessary with stricter checks on incoming link protocol
    messages' session number, which until now only has been validated for
    RESET messages.
    
    Since the other two message types, ACTIVATE and STATE messages also
    carry this number, it is easy to extend the validation check to those
    messages.
    
    We also introduce a flag indicating if a link has a valid peer session
    number or not. This eliminates the mixing of 32- and 16-bit arithmethics
    we are currently using to achieve this.
    Acked-by: NYing Xue <ying.xue@windriver.com>
    Signed-off-by: NJon Maloy <jon.maloy@ericsson.com>
    Signed-off-by: NDavid S. Miller <davem@davemloft.net>
    7ea817f4
node.c 58.5 KB