• Herbert Xu's avatar
    net: Remove all uses of LL_ALLOCATED_SPACE · ae641949
    Herbert Xu authored
    net: Remove all uses of LL_ALLOCATED_SPACE
    
    The macro LL_ALLOCATED_SPACE was ill-conceived.  It applies the
    alignment to the sum of needed_headroom and needed_tailroom.  As
    the amount that is then reserved for head room is needed_headroom
    with alignment, this means that the tail room left may be too small.
    
    This patch replaces all uses of LL_ALLOCATED_SPACE with the macro
    LL_RESERVED_SPACE and direct reference to needed_tailroom.
    
    This also fixes the problem with needed_headroom changing between
    allocating the skb and reserving the head room.
    Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    ae641949
netpoll.c 21.3 KB