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netfilter: nfnetlink: cleanup for nfnetlink_rcv_msg() function
This patch cleans up the message handling path in two aspects: * it uses NLMSG_LENGTH() instead of NLMSG_SPACE() like rtnetlink does in this case to check if there is enough room for the Netlink/nfnetlink headers. No need to check for the padding room. * it removes a redundant header size checking that has been already do at the beginning of the function. Signed-off-by: Pablo Neira Ayuso <[email protected]>
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