net/route: use get_random_int for random counter
Using get_random_int here is faster, more fitting of the use case, and just as cryptographically secure. It also has the benefit of providing better randomness at early boot, which is when many of these structures are assigned. Also, semantically, it's not really proper to have been assigning an atomic_t in this way before, even if in practice it works fine. Signed-off-by: NJason A. Donenfeld <Jason@zx2c4.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
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