From nobody Thu Oct 2 21:55:27 2025 Received: from mail1.fiberby.net (mail1.fiberby.net [193.104.135.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E0B223164CA; Wed, 10 Sep 2025 23:09:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.104.135.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757545746; cv=none; b=sSpQtUAmwESnYDB0gEufQMGXiuW8zKPlULDNGsRcxXJ+reFQ6w2S5W+Nijho+ABCAN7RAso/6cMVdvZq0n3X6Req7xJ2+SGKVDYLqMddlKzMJ+elEhAwmC8k+16w5z2Pbzm/dBeramd5K4C/uHpksbP6rrbknFt6Um56vQgM2lY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757545746; c=relaxed/simple; bh=5iWNx54sGjcK9fIya6c+VTdunUg4fVj+MTblZK2rNog=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=r7Aaeo6hmzKOf1qzGJ6qs4tu6Y05DuCQvT6GsVh8XpMJ5rOmlJ2PFWv0yMZdZiieeAXlEmqeubedYer04KytWEOCXYsfc3N2mf54a8BzuYUUagxvfzCfy3CCP8ULQBMSaKlnC038kXksb/4OQFiBY6rX7SEldDOJPAD5c7dTXkg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=fiberby.net; spf=pass smtp.mailfrom=fiberby.net; dkim=pass (2048-bit key) header.d=fiberby.net header.i=@fiberby.net header.b=v+HYsVyf; arc=none smtp.client-ip=193.104.135.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=fiberby.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fiberby.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=fiberby.net header.i=@fiberby.net header.b="v+HYsVyf" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=fiberby.net; s=202008; t=1757545730; bh=5iWNx54sGjcK9fIya6c+VTdunUg4fVj+MTblZK2rNog=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=v+HYsVyfHhzCBm7h8zMSS4thzij7x9TsWwDoNPhjnjHRt2S6YCTyyxwkqoYhs+CMT Z9AX4QK+TZbUT+ZIYcVZuZ9JXcShU+LdHJyNSQXJpY57c56CAY/KckNNWufc/39Qhh vl6pXyzdZTXLVXtsro69o1gWZsZMiwDkg4SoBl89ldMrgzORob2fb1ilS5nI4Qg5xz Z14xnXPsEfVQAuc1LAXuXtaVYMBwaf/CXoL2FvvoaVluyz/7Zs3/DjjW8ff3TB80be fASMwBfOsN0phj9ixmxlGCSPczmsG1Pu5z1u3a0IbedJx5aSGUFcWY30RYaE0e+twX ji85+5xg0GoOw== Received: from x201s (193-104-135-243.ip4.fiberby.net [193.104.135.243]) by mail1.fiberby.net (Postfix) with ESMTPSA id CB80F60139; Wed, 10 Sep 2025 23:08:50 +0000 (UTC) Received: by x201s (Postfix, from userid 1000) id E93582038ED; Wed, 10 Sep 2025 23:08:42 +0000 (UTC) From: =?UTF-8?q?Asbj=C3=B8rn=20Sloth=20T=C3=B8nnesen?= To: "Jason A. Donenfeld" , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: =?UTF-8?q?Asbj=C3=B8rn=20Sloth=20T=C3=B8nnesen?= , Donald Hunter , Simon Horman , Jacob Keller , Andrew Lunn , Sabrina Dubroca , wireguard@lists.zx2c4.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next v2 04/12] tools: ynl-gen: refactor local vars for .attr_put() callers Date: Wed, 10 Sep 2025 23:08:26 +0000 Message-ID: <20250910230841.384545-5-ast@fiberby.net> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250910230841.384545-1-ast@fiberby.net> References: <20250910230841.384545-1-ast@fiberby.net> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Refactor the generation of local variables needed when building requests, by moving the logic into the Type classes, and use the same helper in all places where .attr_put() is called. If any attributes requests identical local_vars, then they will be deduplicated, attributes are assumed to only use their local variables transiently. This patch fixes the build errors below: $ make -C tools/net/ynl/generated/ [...] -e GEN wireguard-user.c -e GEN wireguard-user.h -e CC wireguard-user.o wireguard-user.c: In function =E2=80=98wireguard_get_device_dump=E2=80=99: wireguard-user.c:480:9: error: =E2=80=98array=E2=80=99 undeclared (first us= e in func) 480 | array =3D ynl_attr_nest_start(nlh, WGDEVICE_A_PEERS); | ^~~~~ wireguard-user.c:480:9: note: each undeclared identifier is reported only once for each function it appears in wireguard-user.c:481:14: error: =E2=80=98i=E2=80=99 undeclared (first use i= n func) 481 | for (i =3D 0; i < req->_count.peers; i++) | ^ wireguard-user.c: In function =E2=80=98wireguard_set_device=E2=80=99: wireguard-user.c:533:9: error: =E2=80=98array=E2=80=99 undeclared (first us= e in func) 533 | array =3D ynl_attr_nest_start(nlh, WGDEVICE_A_PEERS); | ^~~~~ make: *** [Makefile:52: wireguard-user.o] Error 1 make: Leaving directory '/usr/src/linux/tools/net/ynl/generated' Signed-off-by: Asbj=C3=B8rn Sloth T=C3=B8nnesen --- tools/net/ynl/pyynl/ynl_gen_c.py | 37 +++++++++++++++++++++----------- 1 file changed, 24 insertions(+), 13 deletions(-) diff --git a/tools/net/ynl/pyynl/ynl_gen_c.py b/tools/net/ynl/pyynl/ynl_gen= _c.py index 04c26ed92ca3..6441d5a31391 100755 --- a/tools/net/ynl/pyynl/ynl_gen_c.py +++ b/tools/net/ynl/pyynl/ynl_gen_c.py @@ -236,6 +236,12 @@ class Type(SpecAttr): line =3D f"ynl_attr_put_{put_type}(nlh, {self.enum_name}, {var}->{= self.c_name})" self._attr_put_line(ri, var, line) =20 + def attr_put_local_vars(self): + local_vars =3D [] + if self.presence_type() =3D=3D 'count': + local_vars.append('unsigned int i;') + return local_vars + def attr_put(self, ri, var): raise Exception(f"Put not implemented for class type {self.type}") =20 @@ -841,6 +847,10 @@ class TypeArrayNest(Type): '}'] return get_lines, None, local_vars =20 + def attr_put_local_vars(self): + local_vars =3D ['struct nlattr *array;'] + return local_vars + super().attr_put_local_vars() + def attr_put(self, ri, var): ri.cw.p(f'array =3D ynl_attr_nest_start(nlh, {self.enum_name});') if self.sub_type in scalars: @@ -2041,6 +2051,15 @@ def put_enum_to_str(family, cw, enum): _put_enum_to_str_helper(cw, enum.render_name, map_name, 'value', enum= =3Denum) =20 =20 +def put_local_vars(struct): + local_vars =3D [] + for _, attr in struct.member_list(): + for local_var in attr.attr_put_local_vars(): + if local_var not in local_vars: + local_vars.append(local_var) + return local_vars + + def put_req_nested_prototype(ri, struct, suffix=3D';'): func_args =3D ['struct nlmsghdr *nlh', 'unsigned int attr_type', @@ -2063,15 +2082,7 @@ def put_req_nested(ri, struct): init_lines.append(f"hdr =3D ynl_nlmsg_put_extra_header(nlh, {struc= t_sz});") init_lines.append(f"memcpy(hdr, &obj->_hdr, {struct_sz});") =20 - has_anest =3D False - has_count =3D False - for _, arg in struct.member_list(): - has_anest |=3D arg.type =3D=3D 'indexed-array' - has_count |=3D arg.presence_type() =3D=3D 'count' - if has_anest: - local_vars.append('struct nlattr *array;') - if has_count: - local_vars.append('unsigned int i;') + local_vars +=3D put_local_vars(struct) =20 put_req_nested_prototype(ri, struct, suffix=3D'') ri.cw.block_start() @@ -2355,10 +2366,7 @@ def print_req(ri): local_vars +=3D ['size_t hdr_len;', 'void *hdr;'] =20 - for _, attr in ri.struct["request"].member_list(): - if attr.presence_type() =3D=3D 'count': - local_vars +=3D ['unsigned int i;'] - break + local_vars +=3D put_local_vars(ri.struct["request"]) =20 print_prototype(ri, direction, terminate=3DFalse) ri.cw.block_start() @@ -2425,6 +2433,9 @@ def print_dump(ri): local_vars +=3D ['size_t hdr_len;', 'void *hdr;'] =20 + if "request" in ri.op[ri.op_mode]: + local_vars +=3D put_local_vars(ri.struct["request"]) + ri.cw.write_func_lvar(local_vars) =20 ri.cw.p('yds.yarg.ys =3D ys;') --=20 2.51.0