On 02/19/2019 06:38 AM, brakmo wrote: > Network Resource Manager is a framework for limiting the bandwidth used > by v2 cgroups. It consists of 4 BPF helpers and a sample BPF program to > limit egress bandwdith as well as a sample user program and script to > simplify NRM testing. > > The sample NRM BPF program is not meant to be production quality, it is > provided as proof of concept. A lot more information, including sample > runs in some cases, are provided in the commit messages of the individual > patches. > > Two more BPF programs, one to limit ingress and one that limits egress > and uses fq's Earliest Departure Time feature, will be provided in an > upcomming patchset. > > brakmo (9): > bpf: Add bpf helper bpf_tcp_enter_cwr > bpf: Test bpf_tcp_enter_cwr in test_verifier > bpf: add bpf helper bpf_skb_set_ecn > bpf: Add bpf helper bpf_tcp_check_probe_timer > bpf: sync bpf.h to tools and update bpf_helpers.h > bpf: Sample program to load cg skb BPF programs > bpf: Sample NRM BPF program to limit egress bw > bpf: User program for testing NRM > bpf: NRM test script > > include/linux/bpf.h | 1 + > include/uapi/linux/bpf.h | 27 +- > kernel/bpf/verifier.c | 4 + > net/core/filter.c | 70 ++++ > samples/bpf/Makefile | 7 + > samples/bpf/do_nrm_test.sh | 429 +++++++++++++++++++ > samples/bpf/load_cg_skb.c | 109 +++++ > samples/bpf/nrm.c | 439 ++++++++++++++++++++ > samples/bpf/nrm.h | 31 ++ > samples/bpf/nrm_kern.h | 109 +++++ > samples/bpf/nrm_out_kern.c | 213 ++++++++++ > tools/include/uapi/linux/bpf.h | 27 +- > tools/testing/selftests/bpf/bpf_helpers.h | 6 + > tools/testing/selftests/bpf/verifier/sock.c | 33 ++ > 14 files changed, 1503 insertions(+), 2 deletions(-) > create mode 100755 samples/bpf/do_nrm_test.sh > create mode 100644 samples/bpf/load_cg_skb.c > create mode 100644 samples/bpf/nrm.c > create mode 100644 samples/bpf/nrm.h > create mode 100644 samples/bpf/nrm_kern.h > create mode 100644 samples/bpf/nrm_out_kern.c
Looks okay to me modulo few minor comments, but lets also Cc TCP maintainers to given them a chance to comment/ACK helper functions. Thanks, Daniel
