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Tue, 11 May 2021 06:09:31 -0700 (PDT) Date: Tue, 11 May 2021 15:09:30 +0200 From: Olivier Matz To: David Marchand Cc: dev@dpdk.org, ian.stokes@intel.com, ktraynor@redhat.com Message-ID: <20210511130930.GH1726@platinum> References: <20210506151426.28202-1-david.marchand@redhat.com> <20210506151426.28202-2-david.marchand@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210506151426.28202-2-david.marchand@redhat.com> User-Agent: Mutt/1.10.1 (2018-07-13) Subject: Re: [dpdk-dev] [PATCH 1/2] net: add endianness annotations to ethernet headers 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 Sender: "dev" On Thu, May 06, 2021 at 05:14:25PM +0200, David Marchand wrote: > Spotted by sparse in OVS build: > > /home/runner/work/ovs/ovs/dpdk-dir/build/include/rte_flow.h:789:27: > error: incorrect type in initializer (different base types) > /home/runner/work/ovs/ovs/dpdk-dir/build/include/rte_flow.h:789:27: > expected unsigned short [usertype] ether_type > /home/runner/work/ovs/ovs/dpdk-dir/build/include/rte_flow.h:789:27: > got restricted ovs_be16 [usertype] > /home/runner/work/ovs/ovs/dpdk-dir/build/include/rte_flow.h:829:25: > error: incorrect type in initializer (different base types) > /home/runner/work/ovs/ovs/dpdk-dir/build/include/rte_flow.h:829:25: > expected unsigned short [usertype] vlan_tci > /home/runner/work/ovs/ovs/dpdk-dir/build/include/rte_flow.h:829:25: > got restricted ovs_be16 [usertype] > /home/runner/work/ovs/ovs/dpdk-dir/build/include/rte_flow.h:830:26: > error: incorrect type in initializer (different base types) > /home/runner/work/ovs/ovs/dpdk-dir/build/include/rte_flow.h:830:26: > expected unsigned short [usertype] eth_proto > /home/runner/work/ovs/ovs/dpdk-dir/build/include/rte_flow.h:830:26: > got restricted ovs_be16 [usertype] > > This was not caught before as no code in headers was using those fields. > This changed with commit 6f2168b69aee ("ethdev: reuse ethernet header > definition in flow item") and commit a56a262e3408 ("ethdev: reuse VLAN > header definition in flow item"). > > Signed-off-by: David Marchand I was wondering if it wouldn't be safer to change the initializer instead of the structure definition, to avoid any API breakage. But after some off-list discussions, it appears that there is no API breakage (rte_be16_t is a typedef to uint16_t), and this kind of changes was already done in the past. Acked-by: Olivier Matz