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<body><table border="1" cellspacing="0" cellpadding="8" class="bz_new_table">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - net/mlx5: Incompatible enum type used in bitwise operation"
href="https://bugs.dpdk.org/show_bug.cgi?id=1758">1758</a>
</td>
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<tr>
<th>Summary</th>
<td>net/mlx5: Incompatible enum type used in bitwise operation
</td>
</tr>
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<th>Product</th>
<td>DPDK
</td>
</tr>
<tr>
<th>Version</th>
<td>25.03
</td>
</tr>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>UNCONFIRMED
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>Normal
</td>
</tr>
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<th>Component</th>
<td>other
</td>
</tr>
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<th>Assignee</th>
<td>dev@dpdk.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>andremuz@gmail.com
</td>
</tr>
<tr>
<th>Target Milestone</th>
<td>---
</td>
</tr></table>
<p>
<div class="bz_comment_block">
<pre class="bz_comment_text">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 explicit
cast to silence this warning
It looks like a legit bug. Here is the offending line:
struct mlx5dv_flow_matcher_attr dv_attr = {
.type = 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. */
</pre>
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