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Miller" , Eric Dumazet , Paolo Abeni , Simon Horman , Jan Stancek , "Matthieu Baerts (NGI0)" , =?iso-8859-1?Q?Asbj=F8rn_Sloth_T=F8nnesen?= , Stanislav Fomichev , Shuah Khan , Ido Schimmel , Guillaume Nault , Petr Machata , linux-kselftest@vger.kernel.org Subject: Re: [PATCH net-next 2/3] netlink: specs: update rt-rule src/dst attribute types to support IPv4 addresses Message-ID: References: <20251029082245.128675-1-liuhangbin@gmail.com> <20251029082245.128675-3-liuhangbin@gmail.com> <20251029163742.3d96c18d@kernel.org> <20251104164804.540a9b8d@kernel.org> <20251105161319.0591f96e@kernel.org> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20251105161319.0591f96e@kernel.org> On Wed, Nov 05, 2025 at 04:13:19PM -0800, Jakub Kicinski wrote: > On Wed, 5 Nov 2025 07:55:47 +0000 Hangbin Liu wrote: > > > > I just realize that most of the address/src/dst in rt-addr/route are > > > > dual stack. The same with FRA_DST. We can't simply change binary to u32. > > > > So can we keep this u32 -> binary change? > > > > > > Ah, should have looked at more context.. > > > Yes, and in that case without the display-hint? > > > > The display-hint is required; otherwise, the displayed src and dst fields > > appear as binary data, and setting the rule’s src/dst values also fails. I > > haven’t checked the code yet, but with > > - display-hint: ipv4 > > the IPv6 addresses are also displayed correctly :) > > Heh, we should have called the hint "ip" in that case :) I saw the display hit supports "ipv4-or-v6", but genetlink-c.yaml doesn't have "ipv4-or-v6". Do you know why? # grep -rn fddi Documentation/netlink Documentation/netlink/genetlink.yaml:188: enum: [ hex, mac, fddi, ipv4, ipv6, uuid ] Documentation/netlink/genetlink-legacy.yaml:157: enum: [ hex, mac, fddi, ipv4, ipv6, ipv4-or-v6, uuid ] Documentation/netlink/netlink-raw.yaml:160: enum: [ hex, mac, fddi, ipv4, ipv6, uuid ] Documentation/netlink/genetlink-c.yaml:230: enum: [ hex, mac, fddi, ipv4, ipv6, uuid ] Thanks Hangbin