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Date: Tue, 30 Jan 2024 11:07:42 -0800
From: Tyler Retzlaff <roretzla@linux.microsoft.com>
To: bugzilla@dpdk.org
Cc: dev@dpdk.org
Subject: Re: [DPDK Bug 1376] A BPF can no longer include header rte_mbuf_core.h
Message-ID: <20240130190742.GA18445@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net>
References: <bug-1376-3@http.bugs.dpdk.org/>
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On Tue, Jan 30, 2024 at 03:42:05PM +0000, bugzilla@dpdk.org wrote:
> https://bugs.dpdk.org/show_bug.cgi?id=1376
> 
>             Bug ID: 1376
>            Summary: A BPF can no longer include header rte_mbuf_core.h
>            Product: DPDK
>            Version: 23.11
>           Hardware: x86
>                 OS: Linux
>             Status: UNCONFIRMED
>           Severity: major
>           Priority: Normal
>          Component: other
>           Assignee: dev@dpdk.org
>           Reporter: michel@digirati.com.br
>   Target Milestone: ---
> 
> Created attachment 272
>   --> https://bugs.dpdk.org/attachment.cgi?id=272&action=edit
> Compilation errors for t2.c and t3.c
> 
> A BPF needs to include the header <rte_mbuf_core.h> to access struct rte_mbuf.
> But the current version of the header <rte_mbuf_core.h> cannot be included in a
> BPF. The attached file shows the errors one gets while compiling the files
> examples/bpf/t2.c and examples/bpf/t3.c.

a bug was fixed where rte_arch_bswap16 was being hidden except when
RTE_FORCE_INTRINSICS was defined.

i suspect -t bpf should likely define RTE_FORCE_INTRINSICS since it
seems generally unreasonable to have x86 inline asm in a bpf translation
unit.

if there are problems with RTE_FORCE_INTRINSICS they'll have to be
addressed as separate bugs.

ty

> 
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