ALTQ on epair not working

[Özkan KIRIK]

Hello,

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=altq#end>*

     The driver	modifications described	in altq(9)
<https://www.freebsd.org/cgi/man.cgi?query=altq&sektion=9&apropos=0&manpath=FreeBSD+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=ae&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
age(4) <https://www.freebsd.org/cgi/man.cgi?query=age&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
alc(4) <https://www.freebsd.org/cgi/man.cgi?query=alc&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
ale(4) <https://www.freebsd.org/cgi/man.cgi?query=ale&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
an(4) <https://www.freebsd.org/cgi/man.cgi?query=an&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
ath(4) <https://www.freebsd.org/cgi/man.cgi?query=ath&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
aue(4) <https://www.freebsd.org/cgi/man.cgi?query=aue&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
     axe(4) <https://www.freebsd.org/cgi/man.cgi?query=axe&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
bce(4) <https://www.freebsd.org/cgi/man.cgi?query=bce&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
bfe(4) <https://www.freebsd.org/cgi/man.cgi?query=bfe&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
bge(4) <https://www.freebsd.org/cgi/man.cgi?query=bge&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
bxe(4) <https://www.freebsd.org/cgi/man.cgi?query=bxe&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
cas(4) <https://www.freebsd.org/cgi/man.cgi?query=cas&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
cxgbe(4) <https://www.freebsd.org/cgi/man.cgi?query=cxgbe&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
dc(4) <https://www.freebsd.org/cgi/man.cgi?query=dc&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
de(4) <https://www.freebsd.org/cgi/man.cgi?query=de&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
     ed(4) <https://www.freebsd.org/cgi/man.cgi?query=ed&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
em(4) <https://www.freebsd.org/cgi/man.cgi?query=em&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
ep(4) <https://www.freebsd.org/cgi/man.cgi?query=ep&sektion=4&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports>,
epair(4) <https://www.freebsd.org/cgi/man.cgi?query=epair&sektion=4&apropos=0&manpath=FreeBSD+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 += len;
 524                         if (mflags & (M_BCAST|M_MCAST))
 525                                 ifp->if_omcasts++;
 526
 527                         if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 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

I have no idea that why it says that it doesn't support altq altough the
source code contains ALTQ section.


Regards
Özkan KIRIK