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4ef1a7cb08
This patch is to do 3 things for ipv6_dev_find():
As David A. noticed,
- rt6_lookup() is not really needed. Different from __ip_dev_find(),
ipv6_dev_find() doesn't have a compatibility problem, so remove it.
As Hideaki suggested,
- "valid" (non-tentative) check for the address is also needed.
ipv6_chk_addr() calls ipv6_chk_addr_and_flags(), which will
traverse the address hash list, but it's heavy to be called
inside ipv6_dev_find(). This patch is to reuse the code of
ipv6_chk_addr_and_flags() for ipv6_dev_find().
- dev parameter is passed into ipv6_dev_find(), as link-local
addresses from user space has sin6_scope_id set and the dev
lookup needs it.
Fixes: 81f6cb31222d ("ipv6: add ipv6_dev_find()")
Suggested-by: YOSHIFUJI Hideaki <hideaki.yoshifuji@miraclelinux.com>
Reported-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>