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Date:      Tue, 21 Mar 2017 20:59:50 -0700
From:      =?UTF-8?Q?Ermal_Lu=C3=A7i?= <eri@freebsd.org>
To:        =?UTF-8?B?w5Z6a2FuIEtJUklL?= <ozkan.kirik@gmail.com>
Cc:        "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>
Subject:   Re: if_epair altq support problem
Message-ID:  <CAPBZQG0oUHamfmvZxk8_LaPG_%2BhTbPTuvX4h7Y9osrsvcH1L3g@mail.gmail.com>
In-Reply-To: <CAAcX-AFJ4mmFQt2k3gdsG4c8g3d-ypzSFpypQLQF_3Jdw0W3ew@mail.gmail.com>
References:  <CAAcX-AFJ4mmFQt2k3gdsG4c8g3d-ypzSFpypQLQF_3Jdw0W3ew@mail.gmail.com>

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On Tue, Mar 21, 2017 at 5:26 AM, =C3=96zkan KIRIK <ozkan.kirik@gmail.com> w=
rote:

> Hello,
>
> I sent this email also to  freebsd-pf list. But I think that the main
> problem is belongs to sys/net/if_epair.c.
>
> I'm using FreeBSD 10.3-p17 amd64. epair pseudo device is listed as
> supperted deviced at the Man page of altq(4).
> From man page of altq :
>
> *SUPPORTED DEVICES <https://www.freebsd.org/cgi/man.cgi?query=3Daltq#end>=
*
>
>      The driver modifications described in altq(9)
> <https://www.freebsd.org/cgi/man.cgi?query=3Daltq&sektion=3D9&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>
> are required    to use a cer-
>      tain network card with *ALTQ*.  They       have been applied to the
> following
>      hardware drivers: ae(4)
> <https://www.freebsd.org/cgi/man.cgi?query=3Dae&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> age(4) <https://www.freebsd.org/cgi/man.cgi?query=3Dage&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> alc(4) <https://www.freebsd.org/cgi/man.cgi?query=3Dalc&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> ale(4) <https://www.freebsd.org/cgi/man.cgi?query=3Dale&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> an(4) <https://www.freebsd.org/cgi/man.cgi?query=3Dan&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> ath(4) <https://www.freebsd.org/cgi/man.cgi?query=3Dath&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> aue(4) <https://www.freebsd.org/cgi/man.cgi?query=3Daue&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
>      axe(4) <https://www.freebsd.org/cgi/man.cgi?query=3Daxe&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> bce(4) <https://www.freebsd.org/cgi/man.cgi?query=3Dbce&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> bfe(4) <https://www.freebsd.org/cgi/man.cgi?query=3Dbfe&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> bge(4) <https://www.freebsd.org/cgi/man.cgi?query=3Dbge&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> bxe(4) <https://www.freebsd.org/cgi/man.cgi?query=3Dbxe&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> cas(4) <https://www.freebsd.org/cgi/man.cgi?query=3Dcas&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> cxgbe(4) <https://www.freebsd.org/cgi/man.cgi?query=3Dcxgbe&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> dc(4) <https://www.freebsd.org/cgi/man.cgi?query=3Ddc&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> de(4) <https://www.freebsd.org/cgi/man.cgi?query=3Dde&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
>      ed(4) <https://www.freebsd.org/cgi/man.cgi?query=3Ded&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> em(4) <https://www.freebsd.org/cgi/man.cgi?query=3Dem&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> ep(4) <https://www.freebsd.org/cgi/man.cgi?query=3Dep&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> epair(4) <https://www.freebsd.org/cgi/man.cgi?query=3Depair&sektion=3D4&;
> apropos=3D0&manpath=3DFreeBSD+11.0-RELEASE+and+Ports>,
> ....
>
> But while trying to use it the system says that it's not suppoerted. I
> tried on FreeBSD 11 also. The output is below:
>
> pf.conf :
> altq on epair0b hfsc bandwidth 1Mb queue { ftp, ssh, icmp, other }
> queue ftp bandwidth 30% priority 0 hfsc (upperlimit 99%)
> queue ssh bandwidth 30% priority 2 hfsc (upperlimit 99%)
> queue icmp bandwidth 10% priority 2 hfsc (upperlimit 99%)
> queue other bandwidth 30% priority 1 hfsc (default upperlimit 99%)
>
>
> # ifconfig epair0 create
> # ifconfig epair0a up
> # ifconfig epair0b up
> # pfctl -f pf.conf
> pfctl: epair0b: driver does not support altq
>
> # sysctl -a | grep ALTQ
> options ALTQ_NOPCC
> options ALTQ_PRIQ
> options ALTQ_CDNR
> options ALTQ_HFSC
> options ALTQ_RIO
> options ALTQ_RED
> options ALTQ_CBQ
> options ALTQ
>
>
> I have a look on /usr/src/sys/net/if_epair.c, and found the ALTQ section:
>
> 514 #ifdef ALTQ
>  515         /* Support ALTQ via the clasic if_start() path. */
>  516         IF_LOCK(&ifp->if_snd);
>  517         if (ALTQ_IS_ENABLED(&ifp->if_snd)) {
>  518                 ALTQ_ENQUEUE(&ifp->if_snd, m, NULL, error);
>  519                 if (error)
>  520                         ifp->if_snd.ifq_drops++;
>  521                 IF_UNLOCK(&ifp->if_snd);
>  522                 if (!error) {
>  523                         ifp->if_obytes +=3D len;
>  524                         if (mflags & (M_BCAST|M_MCAST))
>  525                                 ifp->if_omcasts++;
>  526
>  527                         if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) =
=3D=3D
> 0)
>  528                                 epair_start_locked(ifp);
>  529                         else
>  530                                 (void)epair_add_ifp_for_
> draining(ifp);
>  531                 }
>  532                 return (error);
>  533         }
>  534         IF_UNLOCK(&ifp->if_snd);
>  535 #endif
>
>

Just apply manually this patch to make it work.

diff --git a/sys/net/if_epair.c b/sys/net/if_epair.c
index 540f06c..04733a5 100644
--- a/sys/net/if_epair.c
+++ b/sys/net/if_epair.c
@@ -827,9 +827,11 @@ epair_clone_create(struct if_clone *ifc, char *name,
size_t len, caddr_t params)
        ifp->if_capabilities =3D IFCAP_VLAN_MTU;
        ifp->if_capenable =3D IFCAP_VLAN_MTU;
        ifp->if_start =3D epair_start;
+       if_setstartfn(ifp, epair_start);
+       if_setsendqlen(ifp, ifqmaxlen);
+       if_setsendqready(ifp);
        ifp->if_ioctl =3D epair_ioctl;
        ifp->if_init  =3D epair_init;
-       ifp->if_snd.ifq_maxlen =3D ifqmaxlen;
        /* Assign a hopefully unique, locally administered etheraddr. */
        eaddr[0] =3D 0x02;
        eaddr[3] =3D (ifp->if_index >> 8) & 0xff;
@@ -852,10 +854,11 @@ epair_clone_create(struct if_clone *ifc, char *name,
size_t len, caddr_t params)
        ifp->if_flags =3D IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
        ifp->if_capabilities =3D IFCAP_VLAN_MTU;
        ifp->if_capenable =3D IFCAP_VLAN_MTU;
-       ifp->if_start =3D epair_start;
+       if_setstartfn(ifp, epair_start);
+       if_setsendqlen(ifp, ifqmaxlen);
+       if_setsendqready(ifp);
        ifp->if_ioctl =3D epair_ioctl;
        ifp->if_init  =3D epair_init;
-       ifp->if_snd.ifq_maxlen =3D ifqmaxlen;
        /* We need to play some tricks here for the second interface. */
        strlcpy(name, epairname, len);
        error =3D if_clone_create(name, len, (caddr_t)scb);





> I have no idea that why it says that it doesn't support altq altough the
> source code contains ALTQ section.
>
>
> Regards
> =C3=96zkan KIRIK
> _______________________________________________
> freebsd-net@freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-net
> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"




--=20
Ermal



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