From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 56D5446BCD; Mon, 21 Jul 2025 16:19:33 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 1A385402E2; Mon, 21 Jul 2025 16:19:33 +0200 (CEST) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id 73EDD40297 for ; Mon, 21 Jul 2025 16:19:31 +0200 (CEST) Received: by inbox.dpdk.org (Postfix, from userid 33) id 687B846BD9; Mon, 21 Jul 2025 16:19:31 +0200 (CEST) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [DPDK/other Bug 1758] net/mlx5: Incompatible enum type used in bitwise operation Date: Mon, 21 Jul 2025 14:19:31 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: other X-Bugzilla-Version: 25.03 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: andremuz@gmail.com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: Normal X-Bugzilla-Assigned-To: dev@dpdk.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: Content-Type: multipart/alternative; boundary=17531075710.e8515F44f.2892809 Content-Transfer-Encoding: 7bit X-Bugzilla-URL: https://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org --17531075710.e8515F44f.2892809 Date: Mon, 21 Jul 2025 16:19:31 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All https://bugs.dpdk.org/show_bug.cgi?id=3D1758 Bug ID: 1758 Summary: net/mlx5: Incompatible enum type used in bitwise operation Product: DPDK Version: 25.03 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: other Assignee: dev@dpdk.org Reporter: andremuz@gmail.com Target Milestone: --- Compiling with MSCS results in the warning below: ../drivers/net/mlx5/mlx5_flow_dv.c(19636): warning C5287: operands are different enum types 'ibv_flow_attr_type' and 'ibv_flow_flags'; use an expl= icit cast to silence this warning It looks like a legit bug. Here is the offending line: struct mlx5dv_flow_matcher_attr dv_attr =3D { .type =3D IBV_FLOW_ATTR_NORMAL | IBV_FLOW_ATTR_FLAGS_EGRESS, As the warning states, the constants in the bitwise operation belong to different enums, and these enums have overlaping values, which makes the bitwise operation very suspicious. On top of that, I see that struct mlx5dv_flow_matcher_attr has a field named "flags" which accepts values from ibv_flow_flags: struct mlx5dv_flow_matcher_attr { enum ibv_flow_attr_type type; uint32_t flags; /* From enum ibv_flow_flags. */ --=20 You are receiving this mail because: You are the assignee for the bug.= --17531075710.e8515F44f.2892809 Date: Mon, 21 Jul 2025 16:19:31 +0200 MIME-Version: 1.0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All
Bug ID 1758
Summary net/mlx5: Incompatible enum type used in bitwise operation
Product DPDK
Version 25.03
Hardware All
OS All
Status UNCONFIRMED
Severity normal
Priority Normal
Component other
Assignee dev@dpdk.org
Reporter andremuz@gmail.com
Target Milestone --- 

Compiling with MSCS results in the=
 warning below:

../drivers/net/mlx5/mlx5_flow_dv.c(19636): warning C5287: operands are
different enum types 'ibv_flow_attr_type' and 'ibv_flow_flags'; use an expl=
icit
cast to silence this warning

It looks like a legit bug. Here is the offending line:

        struct mlx5dv_flow_matcher_attr dv_attr =3D {
                .type =3D IBV_FLOW_ATTR_NORMAL | IBV_FLOW_ATTR_FLAGS_EGRESS,

As the warning states, the constants in the bitwise operation belong to
different enums, and these enums have overlaping values, which makes the
bitwise operation very suspicious.
On top of that, I see that struct mlx5dv_flow_matcher_attr has a field named
"flags" which accepts values from ibv_flow_flags:

        struct mlx5dv_flow_matcher_attr {
                enum ibv_flow_attr_type type;
                uint32_t flags; /* From enum ibv_flow_flags. */

You are receiving this mail because:
  • You are the assignee for the bug.
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