[net-next,v2,0/9] refactor duplicate codes in the tc cls walk function

Message

shaozhengchao Sept. 14, 2022, 10:02 a.m. UTC

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 bpf-filter
ok 1 23c3 - Add cBPF filter with valid bytecode
ok 2 1563 - Add cBPF filter with invalid bytecode
ok 3 2334 - Add eBPF filter with valid object-file
ok 4 2373 - Add eBPF filter with invalid object-file
ok 5 4423 - Replace cBPF bytecode
ok 6 5122 - Delete cBPF filter
ok 7 e0a9 - List cBPF filters

./tdc.py -c 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 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 4392 - List flow filters
ok 26 4322 - Change flow filter with map key num
ok 27 2320 - Replace flow filter with map key num
ok 28 3213 - Delete flow filter with map key num

./tdc.py -c 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 filter with pipe action

./tdc.py -c 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 filter

./tdc.py -c 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 filter with pass action
ok 9 9203 - Replace tcindex filter with pass action
ok 10 7957 - Delete tcindex filter with drop action

---
v2: rectify spelling error; The category name bpf in filters file 
    is renamed to bpf-filter
---

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