igb driver problem/bug with altq and FreeBSD 9.1

S

saznik

Hi guys,

I have a problem with one FreeBSD machine after the upgrade from 9.0 to 9.1. Actually I'm running 9.1-RELEASE p4.

Code: 
FreeBSD XXX 9.1-RELEASE-p4 FreeBSD 9.1-RELEASE-p4 #0: Tue Jul  9 08:51:25 CEST 2013     root@XXX:/usr/obj/usr/src/sys/XXX  amd64

On this machine I use altq with HFSC. The network card is an Intel Quad Port Server Adapter with the Intel® 82576 Gigabit Ethernet Controller. Under 9.1 my pf.conf isn't working anymore. When I try to load the config I got this:
Code: 
pfctl: igb0: driver does not support altq

After some googling I found another one in the mailing list having the same problem http://lists.freebsd.org/pipermail/freebsd-net/2013-April/thread.html#35119. So it seems to be a problem/bug in the igb driver. I have built a custom kernel and all necessary options for altq are set.

Code: 
options         ALTQ
options         ALTQ_CBQ        # Class Bases Queuing (CBQ)
options         ALTQ_RED        # Random Early Detection (RED)
options         ALTQ_RIO        # RED In/Out
options         ALTQ_HFSC       # Hierarchical Packet Scheduler (HFSC)
options         ALTQ_PRIQ       # Priority Queuing (PRIQ)
options         ALTQ_NOPCC      # Required for SMP build

Has anybody fixed this problem? Should I try to use the newest driver available on the Intel site? Maybe it's fixed in the new version?

Thanks for help!
 
I would suggest trying 9-STABLE. Bug fixes unfortunately don't usually find their way back into a RELEASE. If it's a known problem it's quite likely fixed in -STABLE.
 
In the meantime I found a bug report which describes the problem.

Good to know that it should be fixed soon in STABLE. Does someone have a suggestion how I can track when the changes are merged into STABLE? Will the bug report get closed when the changes go into STABLE?
 
OK, so after svn update -r 252899 should I add
Code: 
CFLAGS  += -DIGB_LEGACY_TX
to /usr/src/sys/modules/igb/Makefile in order to use the igb driver together with ALTQ?

Thanks!
 
OK, I just recompiled my kernel (FreeBSD 9.1-STABLE #0 r252899 amd64), without changing anything in source files, and the problem still exists:
Code: 
pfctl: igb0: driver does not support altq

Thanks in advance for any help!
 
krzysiekb81 said:
OK, I just recompiled my kernel (FreeBSD 9.1-STABLE #0 r252899 amd64),
Click to expand...
Update your sources, 9-STABLE is currently 9.2-BETA1:
Code: 
dice@molly:~> uname -a
FreeBSD molly.dicelan.home 9.2-BETA1 FreeBSD 9.2-BETA1 #0 r253614: Wed Jul 24 22:05:27 CEST 2013     root@molly.dicelan.home:/usr/obj/usr/src/sys/MOLLY  amd64
 
OK, I've rebuilt my kernel and world:
Code: 
FreeBSD 9.2-BETA1 (AMD64) #1 r253646: Thu Jul 25 12:13:34 CEST 2013
but still, trying to load pf.conf with ALTQ configuration I get:
Code: 
pfctl: igb0: driver does not support altq
 
Reading this thread I would have thought FreeBSD 9.3 would have fixed this. I just built 9.3 from source and I still cannot use altq:

Code: 
$pfctl -f /etc/pf.conf
pfctl: igb1: driver does not support altq

I compiled in altq support in the kernel. Is this still an issue, and is there any reason to think it would be fixed by going to 10.0?

edit: no, upgrading to FreeBSD 10.0 did not help.
 
After trying the various patches out there that supposedly enable ALTQ for igb, it still does not work. I made the changes in the patch below:

Code: 
Index: sys/modules/igb/Makefile
===================================================================
--- sys/modules/igb/Makefile    (revision 272394)
+++ sys/modules/igb/Makefile    (working copy)
@@ -21,7 +21,7 @@
 # instead use the older if_start non-multiqueue capable interface.
 # This might be desireable for testing, or to enable the use of
 # ALTQ.
-#CFLAGS  += -DIGB_LEGACY_TX
+CFLAGS  += -DIGB_LEGACY_TX

 .if !defined(KERNBUILDDIR)
 .if ${MK_INET_SUPPORT} != "no"
Index: sys/dev/e1000/if_igb.c
===================================================================
--- sys/dev/e1000/if_igb.c      (revision 272394)
+++ sys/dev/e1000/if_igb.c      (working copy)
@@ -2380,7 +2380,9 @@
 {
        device_t                dev = adapter->dev;
        struct igb_queue        *que = adapter->queues;
+#ifndef IGB_LEGACY_TX
        struct tx_ring          *txr = adapter->tx_rings;
+#endif
        int                     error, rid = 0;

        /* Turn off all interrupts */

Unfortunately, it seems a lot of the patches discussed in this thread:

http://lists.freebsd.org/pipermail/free ... 35078.html

have not been integrated into even 10-stable. It also sounded like they may not be ready for production use. Is ALTQ on igb dead forever? I have been using it for years, but now I cannot.
 
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