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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>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.