Date: Fri, 21 Mar 2014 23:18:02 GMT From: "Vladislav V. Prodan" <admin@support.od.ua> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/187835: Ngctl strange behavior when adding more than 530 vlan through nethraph Message-ID: <201403212318.s2LNI2PV080238@cgiserv.freebsd.org> Resent-Message-ID: <201403212320.s2LNK08c026374@freefall.freebsd.org>
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>Number: 187835
>Category: misc
>Synopsis: Ngctl strange behavior when adding more than 530 vlan through nethraph
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Mar 21 23:20:00 UTC 2014
>Closed-Date:
>Last-Modified:
>Originator: Vladislav V. Prodan
>Release: FreeBSD 10.0
>Organization:
support.od.ua
>Environment:
FreeBSD vm-10-2.domain.com 10.0-STABLE FreeBSD 10.0-STABLE #0: Wed Feb 26 00:26:28 EET 2014 root@vm-10-2.domain.com:/usr/obj/usr/src/sys/vm-10-2.2 amd64
>Description:
Vlan numbering started with number 100
1)
After adding 538 th Vlans (vid = 637) were suddenly added additional options pcp=0 cfi=0
..
=627 } { hook="vlan628" vlan=628 vid=628 } { hook="vlan629" vlan=629 vid=629 } { hook="vlan630" vlan=630 vid=630 } { hook="vlan631" vlan=631 vid=631 } { hook="vlan632" vlan=632 vid=632 } { hook="vlan633" vlan=633 vid=633 } { hook="vlan634" vlan=634 vid=634 } { hook="vlan635" vlan=635 vid=635 } { hook="vlan636" vlan=636 vid=636 } { hook="vlan637" vlan=637 vid=637 pcp=0 cfi=0 } { hook="vlan638" vlan=638 vid=638 pcp=0 cfi=0 } { hook="vlan639" vlan=639 vid=639 pcp=0 cfi=0 } { hook="vlan640" vlan=640 vid=640 pcp=0 cfi=0 } { hook="vlan641" vlan=641 vid=641 pcp=0 cfi=0 } { hook="vlan642" vlan=642 vid=642 pcp=0 cfi=0 } { hook="vlan643" vlan=643 vid=643 pcp=0 cfi=0 } { hook="vlan644" vlan=644 vid=644 pcp=0 cfi=0 } { hook="vlan645" vlan=645 vid=645 pcp=0 cfi=0 } { hook="vlan646" vlan=646 vid=646 pcp=0 cfi=0 } { hook="vlan647" vlan=647 vid=647 pcp=0 cfi=0 } { hook="vlan648" vlan=648 vid=648 pcp=0 cfi=0 } { hook="vlan649" vlan=649 vid=649 pcp=0 cfi=0 } ] }
2)
After adding 560 th Vlans (vid = 659) Vlan list instead of a text format has become a binary ...
# ngctl msg em2:lower gettable
Rec'd response 3 from "[7]:":
0000: 3a 02 00 00 76 6c 61 6e 31 30 30 00 00 00 00 00 :...vlan100.....
0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0020: 00 00 00 00 64 00 64 00 00 00 76 6c 61 6e 31 30 ....d.d...vlan10
0030: 31 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1...............
0040: 00 00 00 00 00 00 00 00 00 00 65 00 65 00 00 00 ..........e.e...
0050: 76 6c 61 6e 31 30 32 00 00 00 00 00 00 00 00 00 vlan102.........
0060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0070: 66 00 66 00 00 00 76 6c 61 6e 31 30 33 00 00 00 f.f...vlan103...
0080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
..
Script to create Vlan
#!/bin/sh
ETHER_IF=em2
ngctl -f- <<EOF
mkpeer ${ETHER_IF}: vlan lower downstream
name ${ETHER_IF}:lower vlan-em2
connect ${ETHER_IF}: vlan-em2: upper nomatch
EOF
for i in `jot 560 100`; do
ngctl mkpeer vlan-em2: eiface vlan$i ether
ngctl msg vlan-em2: addfilter \{ vlan=$i hook=\"vlan$i\" \}
done
Tuning:
cat /etc/sysctl.conf
..
net.graph.recvspace=2048000
net.graph.maxdgram=2048000
kern.ipc.nmbclusters=2000000
..
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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