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c56e3956c1
When we want to validate the expr's dependency or hooks, we must do two things to accomplish it. First, write a X_validate callback function and point ->validate to it. Second, call X_validate in init routine. This is very common, such as fib, nat, reject expr and so on ... It is a little ugly, since we will call X_validate in the expr's init routine, it's better to do it in nf_tables_newexpr. So we can avoid to do this again and again. After doing this, the second step listed above is not useful anymore, remove them now. Patch was tested by nftables/tests/py/nft-test.py and nftables/tests/shell/run-tests.sh. Signed-off-by: Liping Zhang <zlpnobody@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>