• David S. Miller's avatar
    [NET]: Fix NAPI completion handling in some drivers. · 6f535763
    David S. Miller authored
    In order for the list handling in net_rx_action() to be
    correct, drivers must follow certain rules as stated by
    this comment in net_rx_action():
    
    		/* Drivers must not modify the NAPI state if they
    		 * consume the entire weight.  In such cases this code
    		 * still "owns" the NAPI instance and therefore can
    		 * move the instance around on the list at-will.
    		 */
    
    A few drivers do not do this because they mix the budget checks
    with reading hardware state, resulting in crashes like the one
    reported by takano@axe-inc.co.jp.
    
    BNX2 and TG3 are taken care of here, SKY2 fix is from Stephen
    Hemminger.
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    6f535763
tg3.c 362 KB