This RFC series adds a C-based linter for checking YNL/C alignment,
and as an example fixes the reported issues in rt-link.

The series is organized as follows:
  Patch 1-2) Prepares the last families for C code gen.
  Patch   3) Introduces the new linter.
  Patch 4-8) Fixes the reported issues in the rt-link family.

When run on net-next the linter reports the following:

$ make -C tools/net/ynl/generated lint 2>&1 > /dev/null |
	grep 'Linter summary'
conntrack: Linter summary: 48 errors, 0 warnings
devlink: Linter summary: 5 errors, 2 warnings
ethtool: Linter summary: 10 errors, 2 warnings
mptcp_pm: Linter summary: 0 errors, 4 warnings
nftables: Linter summary: 183 errors, 0 warnings
nl80211: Linter summary: 193 errors, 0 warnings
nlctrl: Linter summary: 23 errors, 0 warnings
ovs_flow: Linter summary: 2 errors, 3 warnings
rt-link: Linter summary: 173 errors, 8 warnings
rt-neigh: Linter summary: 31 errors, 0 warnings
rt-rule: Linter summary: 9 errors, 0 warnings
tc: Linter summary: 11 errors, 1 warnings

After this series rt-link has 2 false-positive warnings:

$ make -C tools/net/ynl/generated/ rt-link-lint 2>&1 > /dev/null
rt-link: WARN: vlan-protocols: Possible missing member before
ETH_P_8021AD (33024 -> 34984)
rt-link: WARN: netkit-policy: Possible missing member before
NETKIT_DROP (0 -> 2)
rt-link: Linter summary: 0 errors, 2 warnings

WDYT?

Asbjørn Sloth Tønnesen (8):
  netlink: specs: nftables: add uapi-header
  netlink: specs: conntrack: add uapi-header
  tools: ynl: add C-based YNL linter
  netlink: specs: rt-link: add C naming info
  netlink: specs: rt-link: re-align IPv4 devconf
  netlink: specs: rt-link: re-align ifla-inet6-stats
  netlink: specs: rt-link: fix ifinfo-flags names
  netlink: specs: rt-link: fix netkit-policy names

 Documentation/netlink/specs/conntrack.yaml |   1 +
 Documentation/netlink/specs/nftables.yaml  |   1 +
 Documentation/netlink/specs/rt-link.yaml   |  60 +++++---
 include/uapi/linux/snmp.h                  |   6 +-
 tools/net/ynl/Makefile.deps                |  11 +-
 tools/net/ynl/generated/.gitignore         |   3 +
 tools/net/ynl/generated/Makefile           |  27 +++-
 tools/net/ynl/linter/gen-h.sh              |  23 ++++
 tools/net/ynl/linter/linter.h              | 152 +++++++++++++++++++++
 tools/net/ynl/pyynl/ynl_gen_c.py           |  72 ++++++++--
 10 files changed, 316 insertions(+), 40 deletions(-)
 create mode 100755 tools/net/ynl/linter/gen-h.sh
 create mode 100644 tools/net/ynl/linter/linter.h


base-commit: 0abe8777490ebc008635ecb20297761d1b317697
-- 
2.55.0