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authorDaniel Borkmann <daniel@iogearbox.net>2018-12-19 00:27:24 +0100
committerDaniel Borkmann <daniel@iogearbox.net>2018-12-19 00:30:05 +0100
commitdd4bfda9cfd1b0b4aad8760fc027cc81e0c6787f (patch)
tree70590ac2bacf2a40aec88e06aca9e924e48695ef /kernel/bpf
parent0bae2d4d62d523f06ff1a8e88ce38b45400acd28 (diff)
parent945a47d87cee24a95e11fdc0cd868b872f9b9616 (diff)
downloadlinux-dd4bfda9cfd1b0b4aad8760fc027cc81e0c6787f.tar.bz2
Merge branch 'bpf-sk-msg-size-member'
John Fastabend says: ==================== This adds a size field to the sk_msg_md data structure used by SK_MSG programs. Without this in the zerocopy case and in the copy case where multiple iovs are in use its difficult to know how much data can be pulled in. The normal method of reading data and data_end only give the current contiguous buffer. BPF programs can attempt to pull in extra data but have to guess if it exists. This can result in multiple "guesses" its much better if we know upfront the size of the sk_msg. ==================== Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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