On 12/17/2018 12:47 AM, John Fastabend wrote: > 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. > > John Fastabend (3): > bpf: sockmap, metadata support for reporting length of message > bpf: add tools lib/include support sk_msg_md size field > bpf: sk_msg, add tests for size field > > include/linux/skmsg.h | 3 +++ > include/uapi/linux/bpf.h | 1 + > net/core/filter.c | 6 ++++++ > tools/include/uapi/linux/bpf.h | 1 + > tools/testing/selftests/bpf/test_verifier.c | 16 +++++++++++++--- > 5 files changed, 24 insertions(+), 3 deletions(-) >
Applied, thanks!
