sctp: convert sack_needed and sack_generation to bits
They don't need to be any bigger than that and with this we start a new bitfield for tracking association runtime stuff, like zero window situation. Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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