Frithjof Hammer wrote: > My goal is to setup an ingress traffic shaping on my PPPOE DSL line with ifb. > > My old imq stuff used iptables marks (like 'iptables -t mangle -A > PREROUTING -p tcp --sport 22 -m length --length :500 -j MARK --set-mark 31') > to classify the traffic and since i am lazy, i tried to to reuse them with > ifb. But no luck: iptables marks the packets well, but tc doesn't see the > marks on ifb0. > > May be my problem is somewhere between ppp0 and ifb0, so for a basic test, I > tried this: > > tc qdisc add dev ppp0 ingress > modprobe ifb > ip link set up dev ifb0 > tc filter add dev ppp0 parent ffff: protocol ip prio 10 u32 \ > match u32 0 0 flowid 1:1 \ > action mirred egress redirect dev ifb0 > > and run: > > root@router:/# tcpdump -i ifb0 -n > tcpdump: WARNING: ifb0: no IPv4 address assigned > tcpdump: verbose output suppressed, use -v or -vv for full protocol decode > listening on ifb0, link-type EN10MB (Ethernet), capture size 96 bytes > 12:38:29.584451 PPPoE [ses 0x7dc] IP 217.10.79.2.10000 > 84.189.95.184.1024: > UDP, length 84 > 12:38:29.585924 PPPoE [ses 0x7dc] IP 84.189.5.17 > 84.189.95.184: GREv1, call > 24388, seq 1868, ack 3210, length 205: compressed PPP data > 12:38:29.600506 PPPoE [ses 0x7dc] IP truncated-ip - 256 bytes missing! > 24.163.113.160.34247 > 84.189.95.184.9025: UDP, length 359 > [...] > > Looks like the packetes are still pppoe en-capsuled. Is this the correct > behavior? This only occurs on ppp0, on other devices (like eth0) my iptables > marks are matched by tc. What can I do to get my iptables marks working on > ppp0 again? Does this patch help?
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c index 5795789..7c80f16 100644 --- a/net/sched/act_mirred.c +++ b/net/sched/act_mirred.c @@ -83,6 +83,7 @@ static int tcf_mirred_init(struct rtattr *rta, struct rtattr *est, case ARPHRD_IPGRE: case ARPHRD_VOID: case ARPHRD_NONE: + case ARPHRD_PPP: ok_push = 0; break; default:
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