Merge branch 'bpf-sk-msg-pop-data'
John Fastabend says: ==================== After being able to add metadata to messages with sk_msg_push_data we have also found it useful to be able to "pop" this metadata off before sending it to applications in some cases. This series adds a new helper sk_msg_pop_data() and the associated patches to add tests and tools/lib support. Thanks! v2: Daniel caught that we missed adding sk_msg_pop_data to the changes data helper so that the verifier ensures BPF programs revalidate data after using this helper. Also improve documentation adding a return description and using RST syntax per Quentin's comment. And delta calculations for DROP with pop'd data (albeit a strange set of operations for a program to be doing) had potential to be incorrect possibly confusing user space applications, so fix it. ==================== Acked-by: NAlexei Starovoitov <ast@kernel.org> Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
Showing
想要评论请 注册 或 登录