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    sctp: prepare asoc stream for stream reconf · a8386317
    Xin Long authored
    
    
    sctp stream reconf, described in RFC 6525, needs a structure to
    save per stream information in assoc, like stream state.
    
    In the future, sctp stream scheduler also needs it to save some
    stream scheduler params and queues.
    
    This patchset is to prepare the stream array in assoc for stream
    reconf. It defines sctp_stream that includes stream arrays inside
    to replace ssnmap.
    
    Note that we use different structures for IN and OUT streams, as
    the members in per OUT stream will get more and more different
    from per IN stream.
    
    v1->v2:
      - put these patches into a smaller group.
    v2->v3:
      - define sctp_stream to contain stream arrays, and create stream.c
        to put stream-related functions.
      - merge 3 patches into 1, as new sctp_stream has the same name
        with before.
    
    Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
    Reviewed-by: default avatarMarcelo Ricardo Leitner <marcelo.leitner@gmail.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    a8386317