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There is only a single place in the kernel that regisers the "calcit" callback (to determine min allocation for dumps). This is in rtnetlink.c for PF_UNSPEC RTM_GETLINK. The function that checks for calcit presence at run time will first check the requested family (which will always fail for !PF_UNSPEC as no callsite registers this), then falls back to checking PF_UNSPEC. Therefore we can just check if type is RTM_GETLINK and then do a direct call. Because of fallback to PF_UNSPEC all RTM_GETLINK types used this regardless of family. This has the advantage that we don't need to allocate space for the function pointer for all the other families. A followup patch will drop the calcit function pointer from the rtnl_link callback structure. Signed-off-by: Florian Westphal <fw@strlen.de> Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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.