I tried to run the script efcbq that comes with iproute2 official documentation(/usr/share/doc/iproute2/examples/diffserv/efcbq) on 2.4.19 kernel. #!/bin/sh # TC=tc DEV=dev\ eth0 $TC qdisc add $DEV handle 1:0 root dsmark indices 64 default_index 0 set_tc_index $TC filter add $DEV parent 1:0 protocol ip prio 1 tcindex mask 0xfc shift 2 $TC qdisc add $DEV parent 1:0 handle 2:0 cbq bandwidth 10Mbit cell 8 avpkt 1000 mpu 64 # # EF class # $TC class add $DEV parent 2:0 classid 2:1 cbq bandwidth 10Mbit rate 1500Kbit avpkt 1000 prio 1 bounded isolated allot 1514 weight 1 maxburst 10 # packet fifo for EF? $TC qdisc add $DEV parent 2:1 pfifo limit 5 $TC filter add $DEV parent 2:0 protocol ip prio 1 handle 0x2e tcindex classid 2:1 pass_on # # BE class # $TC class add $DEV parent 2:0 classid 2:2 cbq bandwidth 10Mbit rate 5Mbit avpkt 1000 prio 7 allot 1514 weight 1 maxburst 21 borrow split 2:0 defmap 0xffff $TC qdisc add $DEV parent 2:2 red limit 60KB min 15KB max 45KB burst 20 avpkt 1000 bandwidth 10Mbit probability 0.4 $TC filter add $DEV parent 2:0 protocol ip prio 2 handle 0 tcindex mask 0 classid 2:2 pass_on Then on executing tc qdisc del dev eth0 root the kernel crashes. and it was BEYOND RECOVERY so no further message could be get. The kernel debug messages upto this stage were(using dmesg utility) tcindex_init(sch c21d4720,[qdisc c21d4780],opt c21d4250) dsmark_init: qdisc c21d4780 tcindex_init(tp c329d9e0) tcindex_get(tp c329d9e0,handle 0x00000000) tcindex_change(tp c329d9e0,handle 0x00000000,tca c1417d3c,arg c1417ca4),opt c315f9d0,p c18157e0,r 00000000 *arg = 0x0 classid/police 00000000/00000000 tcindex_dump(tp c329d9e0,fh 0x0,skb c11af8c0,t c31d2010),p c18157e0,r 00000000,b c31d2038 p->perfect 00000000 p->h 00000000 dsmark_get(sch c21d4720,[qdisc c21d4780],classid 10000) dsmark_get(sch c21d4720,[qdisc c21d4780],classid 10000) dsmark_graft(sch c21d4720,[qdisc c21d4780],new c31f6800,old c1417cc0) dsmark_walk(sch c21d4720,[qdisc c21d4780],walker c3b1fc44) dsmark_walk(sch c21d4720,[qdisc c21d4780],walker c3229c44) ndex_init(tp c329df20) tcindex_get(tp c329df20,handle 0x0000002e) tcindex_change(tp c329df20,handle 0x0000002e,tca c2c01d3c,arg c2c01ca4),opt c19c4af0,p c18156c0,r 00000000 *arg = 0x0 classid/police c19c4af4/00000000 hash 64 mask 65535 r=00000000 r=c2c01c3c tcindex_dump(tp c329df20,fh 0x0,skb c11af8c0,t c31d2010),p c18156c0,r 00000000,b c31d2038 p->perfect 00000000 p->h c315f9a0 ndex_dump(tp c329d9e0,fh 0x0,skb c11af8c0,t c31d2010),p c18157e0,r 00000000,b c31d2038 p->perfect 00000000 p->h 00000000 tcindex_walk(tp c329d9e0,walker c2c01c44),p c18157e0 dsmark_walk(sch c21d4720,[qdisc c21d4780],walker c2c71c44) dsmark_walk(sch c21d4720,[qdisc c21d4780],walker c2175c44) tcindex_init(tp c329d960) tcindex_get(tp c329d960,handle 0x00000000) tcindex_change(tp c329d960,handle 0x00000000,tca c2171d3c,arg c2171ca4),opt c315f8d0,p c18156e0,r 00000000 *arg = 0x0 classid/police c315f8dc/00000000 hash 1 mask 0 r=c1815680 tcindex_dump(tp c329d960,fh 0x0,skb c11af980,t c31d2010),p c18156e0,r 00000000,b c31d2038 p->perfect c1815680 p->h 00000000 When i used gdb then in file : tc_qdisc.c line 138: function : tc_qdisc_modifyc() on calling rtnl_open() the system hangs. this function is defined in libnetlink.c in file libnetlink.c line 48: function rtnl_open() the system hangs on calling the system call rth->fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE); If its an error in the command then HOWTO delete the queing discipline when dsmark is used as its the root qdisc with no associated class And if its a bug in the kernel then what is the workaround _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/ Reply Reply All Forward Delete Put in Folder...InboxSent MessagesDraftsTrash Can Previous Next | Close Calendar Hotmail Services Free Newsletters MSN Featured Offers Find Message Reminders Directories MSN India Links What's New? News Updates Know your future Healthy Living Cinema Global Indians MSN Computing Matrimonial Cricket MSN Dating More Useful Everyday Home Hotmail Astrology Wallpaper Romance Life Style © 2002 Microsoft Corporation. All rights reserved. TERMS OF USE TRUSTe Approved Privacy Statement _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
