netdev - [PATCH net-next 06/12] tools: ynl-gen: support CRUD-like notifications for classic Netlink

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250424021207.1167791-7-kuba@kernel.org>
Date: Wed, 23 Apr 2025 19:12:01 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
	edumazet@...gle.com,
	pabeni@...hat.com,
	andrew+netdev@...n.ch,
	horms@...nel.org,
	donald.hunter@...il.com,
	jacob.e.keller@...el.com,
	sdf@...ichev.me,
	Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next 06/12] tools: ynl-gen: support CRUD-like notifications for classic Netlink

Allow CRUD-style notification where the notification is more
like the response to the request, which can optionally be
looped back onto the requesting socket. Since the notification
and request are different ops in the spec, for example:

    -
      name: delrule
      doc: Remove an existing FIB rule
      attribute-set: fib-rule-attrs
      do:
        request:
          value: 33
          attributes: *fib-rule-all
    -
      name: delrule-ntf
      doc: Notify a rule deletion
      value: 33
      notify: getrule

We need to find the request by ID. Ideally we'd detect this model
from the spec properties, rather than assume that its what all
classic netlink families do. But maybe that'd cause this model
to spread and its easy to get wrong. For now assume CRUD == classic.

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
 tools/net/ynl/pyynl/ynl_gen_c.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/net/ynl/pyynl/ynl_gen_c.py b/tools/net/ynl/pyynl/ynl_gen_c.py
index 2999a2953595..6e697d800875 100755
--- a/tools/net/ynl/pyynl/ynl_gen_c.py
+++ b/tools/net/ynl/pyynl/ynl_gen_c.py
@@ -2789,7 +2789,11 @@ _C_KW = {
 
 
 def _render_user_ntf_entry(ri, op):
-    ri.cw.block_start(line=f"[{op.enum_name}] = ")
+    if not ri.family.is_classic():
+        ri.cw.block_start(line=f"[{op.enum_name}] = ")
+    else:
+        crud_op = ri.family.req_by_value[op.rsp_value]
+        ri.cw.block_start(line=f"[{crud_op.enum_name}] = ")
     ri.cw.p(f".alloc_sz\t= sizeof({type_name(ri, 'event')}),")
     ri.cw.p(f".cb\t\t= {op_prefix(ri, 'reply', deref=True)}_parse,")
     ri.cw.p(f".policy\t\t= &{ri.struct['reply'].render_name}_nest,")
-- 
2.49.0