Date:   Tue, 13 Sep 2022 14:09:55 -0400
From:   Jamal Hadi Salim <jhs@...atatu.com>
To:     Zhengchao Shao <shaozhengchao@...wei.com>
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        bpf@...r.kernel.org, linux-kselftest@...r.kernel.org,
        jiri@...nulli.us, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, shuah@...nel.org,
        ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        martin.lau@...ux.dev, song@...nel.org, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org, sdf@...gle.com,
        haoluo@...gle.com, jolsa@...nel.org, weiyongjun1@...wei.com,
        yuehaibing@...wei.com, Victor Nogueira <victor@...atatu.com>
Subject: Re: [PATCH net-next 0/9] refactor duplicate codes in the tc cls walk function

BTW, There's an opportunity to be a BIG hero: Improving performance of tdc
tests by running them concurrently.
Maybe come to our monthly TC meetups and we can discuss this.

cheers,
jamal

On Tue, Sep 13, 2022 at 2:06 PM Jamal Hadi Salim <jhs@...atatu.com> wrote:
>
> Thanks for the effort you are putting into this.
> The patches look good to me - and i think you got what Cong was asking for
> last time with 2/9. I will wait for Victor to review and even run the
> tdc tests first before putting my ack.
> For now:
> Reviewed-by: Jamal Hadi Salim <jhs@...atatu.com>
>
> cheers,
> jamal
>
>
>
> On Tue, Sep 13, 2022 at 12:20 AM Zhengchao Shao
> <shaozhengchao@...wei.com> wrote:
> >
> > The walk implementation of most tc cls modules is basically the same.
> > That is, the values of count and skip are checked first. If count is
> > greater than or equal to skip, the registered fn function is executed.
> > Otherwise, increase the value of count. So the code can be refactored.
> > Then use helper function to replace the code of each cls module in
> > alphabetical order.
> >
> > The walk function is invoked during dump. Therefore, test cases related
> >  to the tdc filter need to be added.
> >
> > Add test cases locally and perform the test. The test results are listed
> > below:
> >
> > ./tdc.py -e 0811
> > ok 1 0811 - Add multiple basic filter with cmp ematch u8/link layer and
> > default action and dump them
> >
> > ./tdc.py -e 5129
> > ok 1 5129 - List basic filters
> >
> > ./tdc.py -c filters bpf
> > ok 13 23c3 - Add cBPF filter with valid bytecode
> > ok 14 1563 - Add cBPF filter with invalid bytecode
> > ok 15 2334 - Add eBPF filter with valid object-file
> > ok 16 2373 - Add eBPF filter with invalid object-file
> > ok 17 4423 - Replace cBPF bytecode
> > ok 18 5122 - Delete cBPF filter
> > ok 19 e0a9 - List cBPF filters
> >
> > ./tdc.py -c filters cgroup
> > ok 1 6273 - Add cgroup filter with cmp ematch u8/link layer and drop
> > action
> > ok 2 4721 - Add cgroup filter with cmp ematch u8/link layer with trans
> > flag and pass action
> > ok 3 d392 - Add cgroup filter with cmp ematch u16/link layer and pipe
> > action
> > ok 4 0234 - Add cgroup filter with cmp ematch u32/link layer and miltiple
> > actions
> > ok 5 8499 - Add cgroup filter with cmp ematch u8/network layer and pass
> > action
> > ok 6 b273 - Add cgroup filter with cmp ematch u8/network layer with trans
> > flag and drop action
> > ok 7 1934 - Add cgroup filter with cmp ematch u16/network layer and pipe
> > action
> > ok 8 2733 - Add cgroup filter with cmp ematch u32/network layer and
> > miltiple actions
> > ok 9 3271 - Add cgroup filter with NOT cmp ematch rule and pass action
> > ok 10 2362 - Add cgroup filter with two ANDed cmp ematch rules and single
> > action
> > ok 11 9993 - Add cgroup filter with two ORed cmp ematch rules and single
> > action
> > ok 12 2331 - Add cgroup filter with two ANDed cmp ematch rules and one
> > ORed ematch rule and single action
> > ok 13 3645 - Add cgroup filter with two ANDed cmp ematch rules and one
> > NOT ORed ematch rule and single action
> > ok 14 b124 - Add cgroup filter with u32 ematch u8/zero offset and drop
> > action
> > ok 15 7381 - Add cgroup filter with u32 ematch u8/zero offset and invalid
> > value >0xFF
> > ok 16 2231 - Add cgroup filter with u32 ematch u8/positive offset and
> > drop action
> > ok 17 1882 - Add cgroup filter with u32 ematch u8/invalid mask >0xFF
> > ok 18 1237 - Add cgroup filter with u32 ematch u8/missing offset
> > ok 19 3812 - Add cgroup filter with u32 ematch u8/missing AT keyword
> > ok 20 1112 - Add cgroup filter with u32 ematch u8/missing value
> > ok 21 3241 - Add cgroup filter with u32 ematch u8/non-numeric value
> > ok 22 e231 - Add cgroup filter with u32 ematch u8/non-numeric mask
> > ok 23 4652 - Add cgroup filter with u32 ematch u8/negative offset and
> > pass action
> > ok 24 1331 - Add cgroup filter with u32 ematch u16/zero offset and pipe
> > action
> > ok 25 e354 - Add cgroup filter with u32 ematch u16/zero offset and
> > invalid value >0xFFFF
> > ok 26 3538 - Add cgroup filter with u32 ematch u16/positive offset and
> > drop action
> > ok 27 4576 - Add cgroup filter with u32 ematch u16/invalid mask >0xFFFF
> > ok 28 b842 - Add cgroup filter with u32 ematch u16/missing offset
> > ok 29 c924 - Add cgroup filter with u32 ematch u16/missing AT keyword
> > ok 30 cc93 - Add cgroup filter with u32 ematch u16/missing value
> > ok 31 123c - Add cgroup filter with u32 ematch u16/non-numeric value
> > ok 32 3675 - Add cgroup filter with u32 ematch u16/non-numeric mask
> > ok 33 1123 - Add cgroup filter with u32 ematch u16/negative offset and
> > drop action
> > ok 34 4234 - Add cgroup filter with u32 ematch u16/nexthdr+ offset and
> > pass action
> > ok 35 e912 - Add cgroup filter with u32 ematch u32/zero offset and pipe
> > action
> > ok 36 1435 - Add cgroup filter with u32 ematch u32/positive offset and
> > drop action
> > ok 37 1282 - Add cgroup filter with u32 ematch u32/missing offset
> > ok 38 6456 - Add cgroup filter with u32 ematch u32/missing AT keyword
> > ok 39 4231 - Add cgroup filter with u32 ematch u32/missing value
> > ok 40 2131 - Add cgroup filter with u32 ematch u32/non-numeric value
> > ok 41 f125 - Add cgroup filter with u32 ematch u32/non-numeric mask
> > ok 42 4316 - Add cgroup filter with u32 ematch u32/negative offset and
> > drop action
> > ok 43 23ae - Add cgroup filter with u32 ematch u32/nexthdr+ offset and
> > pipe action
> > ok 44 23a1 - Add cgroup filter with canid ematch and single SFF
> > ok 45 324f - Add cgroup filter with canid ematch and single SFF with mask
> > ok 46 2576 - Add cgroup filter with canid ematch and multiple SFF
> > ok 47 4839 - Add cgroup filter with canid ematch and multiple SFF with
> > masks
> > ok 48 6713 - Add cgroup filter with canid ematch and single EFF
> > ok 49 4572 - Add cgroup filter with canid ematch and single EFF with mask
> > ok 50 8031 - Add cgroup filter with canid ematch and multiple EFF
> > ok 51 ab9d - Add cgroup filter with canid ematch and multiple EFF with
> > masks
> > ok 52 5349 - Add cgroup filter with canid ematch and a combination of
> > SFF/EFF
> > ok 53 c934 - Add cgroup filter with canid ematch and a combination of
> > SFF/EFF with masks
> > ok 54 4319 - Replace cgroup filter with diffferent match
> > ok 55 4636 - Detele cgroup filter
> >
> > ./tdc.py -c filters flow
> > ok 1 5294 - Add flow filter with map key and ops
> > ok 2 3514 - Add flow filter with map key or ops
> > ok 3 7534 - Add flow filter with map key xor ops
> > ok 4 4524 - Add flow filter with map key rshift ops
> > ok 5 0230 - Add flow filter with map key addend ops
> > ok 6 2344 - Add flow filter with src map key
> > ok 7 9304 - Add flow filter with proto map key
> > ok 8 9038 - Add flow filter with proto-src map key
> > ok 9 2a03 - Add flow filter with proto-dst map key
> > ok 10 a073 - Add flow filter with iif map key
> > ok 11 3b20 - Add flow filter with priority map key
> > ok 12 8945 - Add flow filter with mark map key
> > ok 13 c034 - Add flow filter with nfct map key
> > ok 14 0205 - Add flow filter with nfct-src map key
> > ok 15 5315 - Add flow filter with nfct-src map key
> > ok 16 7849 - Add flow filter with nfct-proto-src map key
> > ok 17 9902 - Add flow filter with nfct-proto-dst map key
> > ok 18 6742 - Add flow filter with rt-classid map key
> > ok 19 5432 - Add flow filter with sk-uid map key
> > ok 20 4234 - Add flow filter with sk-gid map key
> > ok 21 4522 - Add flow filter with vlan-tag map key
> > ok 22 4253 - Add flow filter with rxhash map key
> > ok 23 4452 - Add flow filter with hash key list
> > ok 24 4341 - Add flow filter with muliple ops
> > ok 25 4322 - List flow filters
> > ok 26 2320 - Replace flow filter with map key num
> > ok 27 3213 - Delete flow filter with map key num
> >
> > ./tdc.py -c filters route
> > ok 1 e122 - Add route filter with from and to tag
> > ok 2 6573 - Add route filter with fromif and to tag
> > ok 3 1362 - Add route filter with to flag and reclassify action
> > ok 4 4720 - Add route filter with from flag and continue actions
> > ok 5 2812 - Add route filter with form tag and pipe action
> > ok 6 7994 - Add route filter with miltiple actions
> > ok 7 4312 - List route filters
> > ok 8 2634 - Delete route filters with pipe action
> >
> > ./tdc.py -c filters rsvp
> > ok 1 2141 - Add rsvp filter with tcp proto and specific IP address
> > ok 2 5267 - Add rsvp filter with udp proto and specific IP address
> > ok 3 2819 - Add rsvp filter with src ip and src port
> > ok 4 c967 - Add rsvp filter with tunnelid and continue action
> > ok 5 5463 - Add rsvp filter with tunnel and pipe action
> > ok 6 2332 - Add rsvp filter with miltiple actions
> > ok 7 8879 - Add rsvp filter with tunnel and skp flag
> > ok 8 8261 - List rsvp filters
> > ok 9 8989 - Delete rsvp filters
> >
> > ./tdc.py -c filters tcindex
> > ok 1 8293 - Add tcindex filter with default action
> > ok 2 7281 - Add tcindex filter with hash size and pass action
> > ok 3 b294 - Add tcindex filter with mask shift and reclassify action
> > ok 4 0532 - Add tcindex filter with pass_on and continue actions
> > ok 5 d473 - Add tcindex filter with pipe action
> > ok 6 2940 - Add tcindex filter with miltiple actions
> > ok 7 1893 - List tcindex filters
> > ok 8 2041 - Change tcindex filters with pass action
> > ok 9 9203 - Replace tcindex filters with pass action
> > ok 10 7957 - Delete tcindex filters with drop action
> >
> > Zhengchao Shao (9):
> >   net/sched: cls_api: add helper for tc cls walker stats updating
> >   net/sched: use tc_cls_stats_update() in filter
> >   selftests/tc-testings: add selftests for bpf filter
> >   selftests/tc-testings: add selftests for cgroup filter
> >   selftests/tc-testings: add selftests for flow filter
> >   selftests/tc-testings: add selftests for route filter
> >   selftests/tc-testings: add selftests for rsvp filter
> >   selftests/tc-testings: add selftests for tcindex filter
> >   selftests/tc-testings: add list case for basic filter
> >
> >  include/net/pkt_cls.h                         |   13 +
> >  net/sched/cls_basic.c                         |    9 +-
> >  net/sched/cls_bpf.c                           |    8 +-
> >  net/sched/cls_flow.c                          |    8 +-
> >  net/sched/cls_fw.c                            |    9 +-
> >  net/sched/cls_route.c                         |    9 +-
> >  net/sched/cls_rsvp.h                          |    9 +-
> >  net/sched/cls_tcindex.c                       |   18 +-
> >  net/sched/cls_u32.c                           |   20 +-
> >  .../tc-testing/tc-tests/filters/basic.json    |   47 +
> >  .../tc-testing/tc-tests/filters/bpf.json      |  171 +++
> >  .../tc-testing/tc-tests/filters/cgroup.json   | 1236 +++++++++++++++++
> >  .../tc-testing/tc-tests/filters/flow.json     |  623 +++++++++
> >  .../tc-testing/tc-tests/filters/route.json    |  181 +++
> >  .../tc-testing/tc-tests/filters/rsvp.json     |  203 +++
> >  .../tc-testing/tc-tests/filters/tcindex.json  |  227 +++
> >  16 files changed, 2716 insertions(+), 75 deletions(-)
> >  create mode 100644 tools/testing/selftests/tc-testing/tc-tests/filters/bpf.json
> >  create mode 100644 tools/testing/selftests/tc-testing/tc-tests/filters/cgroup.json
> >  create mode 100644 tools/testing/selftests/tc-testing/tc-tests/filters/flow.json
> >  create mode 100644 tools/testing/selftests/tc-testing/tc-tests/filters/route.json
> >  create mode 100644 tools/testing/selftests/tc-testing/tc-tests/filters/rsvp.json
> >  create mode 100644 tools/testing/selftests/tc-testing/tc-tests/filters/tcindex.json
> >
> > --
> > 2.17.1
> >

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