Date: Sun, 19 Nov 2023 21:35:03 +0000 From: =?utf-8?Q?Mina_Gali=C4=87?= <freebsd@igalic.co> To: Zhenlei Huang <zlei@FreeBSD.org> Cc: Kyle Evans <kevans@FreeBSD.org>, freebsd-net@freebsd.org, "mike@karels.net" <mike@karels.net> Subject: Re: How to tell if a network interface was renamed (and from what) Message-ID: <rvRLOlpJc9xIf67ZwmZ4Si6TN2VtmIuyuguoQgEk5NTOeqsqkAwB_9KvlMbW6y-npSjCC2lmLVXbD4oIqyKJdDboThcWiehF_hU0L9D6GZc=@igalic.co> In-Reply-To: <032BADD4-0A49-42E2-BAAB-40D2F76C64B9@FreeBSD.org> References: <pdHC0ObBkAbx2HfFIhWYaB5-dmQDEUzNTWvVVJAuJV7FWdWWeSwybVFD-uyBUxPlqDRpAW7D1aAZsbrTxEj9kqsq7ESgO41srPmS-PcXGqw=@igalic.co> <E5F5F61E-3827-404A-A46F-BBCF45A29A82@FreeBSD.org> <9eef5488-e8da-4edd-bc00-baeb5aaf4a23@FreeBSD.org> <ptnVEMJ_x48tdYePN4iYRiEW2vWqwulbEOUJ4dQ1cKGkxNXZPPfdEVHdJKNHFfs2onxNipVZKPwDZZKlDv1peS1Xttim1VitMFsdUiTkAKE=@igalic.co> <032BADD4-0A49-42E2-BAAB-40D2F76C64B9@FreeBSD.org>
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Hi Zhenlei, > Since it is just for physical devices, may I propose to have the driver n= ame in their groups ? >=20 > So an if_ure interface ue0 will look like: >=20 > ``` > ue0: flags=3D1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> met= ric 0 mtu 1500 >=20 > options=3D60009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,RXCSUM= _IPV6,TXCSUM_IPV6> >=20 > ether 00:e0:4c:xx:xx:xx > media: Ethernet autoselect (1000baseT <full-duplex>) >=20 > status: active > +++ groups: ure > nd6 options=3D23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL> >=20 > ``` >=20 > That does not include the unit number. But could be useful to quickly get= the driver name of physical devices. > Given that currently on FreeBSD the easiest way to tell if something is a physical device is by checking the *absence* of groups, this would only really be acceptable if we add an "egress" group like OpenBSD does, in addition to the driver name. If we can't do that, then I think Mike's solution with having the driver (and unit) as a separate category would be preferable. Unrelatedly, I don't see anything in ure(4) mentioning that if_ure devices will be named "ue". Don't we usually document such deviation from the norm? Kind regards, Mina
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