Date: Thu, 22 Jun 2017 06:24:09 +0000 From: =?iso-8859-1?Q?M=26S_-_Krasznai_Andr=E1s?= <Krasznai.Andras@mands.hu> To: Cy Schubert <Cy.Schubert@komquats.com>, Sean Bruno <sbruno@freebsd.org> Cc: Renato Botelho <garga@FreeBSD.org>, "freebsd-current@freebsd.org" <freebsd-current@freebsd.org> Subject: RE: Failover Mode Between Ethernet and Wireless Interfaces broken on >= 11 Message-ID: <9c0081fbaf234585931a7aba4b477dfe@MSEXCH13.mands.hu> In-Reply-To: <201706220540.v5M5e4FF038058@slippy.cwsent.com> References: Message from Sean Bruno <sbruno@freebsd.org> of "Wed, 21 Jun 2017 13:26:58 -0600." <cbdb0928-1355-0d1e-7f9c-69fb5edde09d@freebsd.org> <201706220540.v5M5e4FF038058@slippy.cwsent.com>
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Good morning!
With em0 and iwn I have the same working configuration for failover between=
wireless interface and ethernet adapter. I run FreeBSD-12.=20
There was some change introduced with FreeBSD-11 in the syntax how to speci=
fy the mac address for the wireless interface (old - FreeBSD-10 working fo=
rm: ifconfig_iwn0=3D"ether <new mac address>", the new is=20
create_args_wlan0=3D"wlanaddr <new mac address>". The "new" mac address is =
identical with the ethernet adapter's mac address.=20
best regards
Andr=E1s Krasznai
-----Eredeti =FCzenet-----
Felad=F3: owner-freebsd-current@freebsd.org [mailto:owner-freebsd-current@f=
reebsd.org] Meghatalmaz=F3 Cy Schubert
K=FCldve: 2017. j=FAnius 22. 7:40
C=EDmzett: Sean Bruno
M=E1solatot kap: Renato Botelho; freebsd-current@freebsd.org
T=E1rgy: Re: Failover Mode Between Ethernet and Wireless Interfaces broken =
on >=3D 11
In message <cbdb0928-1355-0d1e-7f9c-69fb5edde09d@freebsd.org>, Sean Bruno w=
rite
s:
> This is an OpenPGP/MIME signed message (RFC 4880 and 3156)=20
> --XuprkQPPD5E0VHaDeuAKBatHWCR01xNcA
> Content-Type: multipart/mixed;=20
> boundary=3D"fPqiMVoTg6hr4JdbiP1DBOlOppEsSDgjw";
> protected-headers=3D"v1"
> From: Sean Bruno <sbruno@freebsd.org>
> To: Renato Botelho <garga@FreeBSD.org>, freebsd-current@freebsd.org
> Message-ID: <cbdb0928-1355-0d1e-7f9c-69fb5edde09d@freebsd.org>
> Subject: Re: Failover Mode Between Ethernet and Wireless Interfaces=20
> broken on >=3D 11
> References: <1c1e5c6f-35e5-ca14-2e23-5e33d86a5266@FreeBSD.org>
> In-Reply-To: <1c1e5c6f-35e5-ca14-2e23-5e33d86a5266@FreeBSD.org>
>=20
> --fPqiMVoTg6hr4JdbiP1DBOlOppEsSDgjw
> Content-Type: text/plain; charset=3Dutf-8
> Content-Language: en-US
> Content-Transfer-Encoding: quoted-printable
>=20
>=20
>=20
> On 06/21/17 11:48, Renato Botelho wrote:
> > I've already sent it to net, but I suspect this is the appropriate=20
> > plac=3D
> e
> > to discuss this subject.
> >=3D20
> > Last night I was configuring a new laptop and decided to give it [1]=20
> >a try. I figured out this section of handbook (similar instructions=20
> >are o=3D
> n
> > lagg(4) manpage) is outdated, based on FreeBSD 10.x.
> >=3D20
> > Then I modified a bit the commands and tried to get it configured on =20
> >12-CURRENT, without success. I spoke with adrian@, who told me this =20
> >setup doesn't work on FreeBSD > 10, because on newer versions=20
> >Wireless interfaces mac address cannot be changed.
> >=3D20
> > My next attempt was to do the other way round and make lagg to use=20
> >wlan=3D
> 0
> > mac address instead of em0's. but even doing this my wireless=20
> > interface=3D
>=20
> > ended up not working.
> >=3D20
> > After further investigation I noted that a simple command:
> >=3D20
> > # ifconfig wlan0 ether $wlan0_current_mac_address
> >=3D20
> > is enough to break it on 12-CURRENT.
> >=3D20
> > I've checked if_setlladdr() source code and noted it always replace=20
> >the=3D
>=20
> > mac address, even if the same is already configured on the=20
> > interface. I=3D
> s
> > it the expected behavior?
> >=3D20
> > Just as a PoC I've applied the following patch to if_setlladdr():
> >=3D20
> > Index: sys/net/if.c
> >=20
> >=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=
=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D
> >=3D3D=3D
> =3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D=
3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D
> 3D=3D3D=3D =3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=
=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D
> > --- sys/net/if.c (revision 320097)
> > +++ sys/net/if.c (working copy)
> > @@ -3519,6 +3519,10 @@
> > ifa_free(ifa);
> > return (EINVAL);
> > }
> > + if (memcmp(lladdr, LLADDR(sdl), len) =3D3D=3D3D 0) {
> > + ifa_free(ifa);
> > + return (0);
> > + }
> > switch (ifp->if_type) {
> > case IFT_ETHER:
> > case IFT_FDDI:
> >=3D20
> > And configured it to use wlan0 mac address on rc.conf:
> >=3D20
> > ifconfig_em0=3D3D"ether 60:67:20:c5:2d:48 up"
> > wlans_iwn0=3D3D"wlan0"
> > ifconfig_wlan0=3D3D"WPA"
> > cloned_interfaces=3D3D"lagg0"
> > ifconfig_lagg0=3D3D"up laggproto failover laggport em0 laggport wlan0=20
> >DHC=3D
> P"
> >=3D20
> > and it's now working as expected.
> >=3D20
> > Other than that, I believe if wlan interfaces cannot have their mac =20
> >address changed, ifconfig should return an error when user attempts=20
> >to do it, and if_setlladdr() should do the same.
> >=3D20
> > Thoughts?
> >=3D20
> > [1]
> >=20
> >https://www.freebsd.org/doc/handbook/network-aggregation.html#network
> >in=3D
> g-lagg-wired-and-wireless
> >=3D20
>=20
>=20
> Maybe this is a "iflib" problem. em(4) and igb(4) are pretty=20
> different now in head. Can you shove it into bugzilla with a test=20
> case (copy/paste your email) and tag me on it?
As a late comer to this thread, I don't have any issues either. I too have =
a bge interface and iwn set up as follows:
ifconfig_lagg0=3D"laggproto failover laggport bge0 laggport wlan0 DHCP"
--
Cheers,
Cy Schubert <Cy.Schubert@cschubert.com>
FreeBSD UNIX: <cy@FreeBSD.org> Web: http://www.FreeBSD.org
The need of the many outweighs the greed of the few.
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