RDMA/cma: Handle global/non-linklocal IPv6 addresses in cma_check_linklocal()
If addr is not a linklocal address, the code incorrectly fails to return and ends up assigning the scope ID to the scope id of the address, which is wrong. Fix by checking if it's a link local address first, and immediately return 0 if not. Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
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