Re: [Cake] act_conndscp
On Tue, 2 Apr 2019 at 00:37, Kevin Darbyshire-Bryant wrote: > > > > > On 23 Mar 2019, at 18:35, Kevin Darbyshire-Bryant > > wrote: > > > > > > > >> On 22 Mar 2019, at 21:24, Kevin Darbyshire-Bryant > >> wrote: > >> > >> It looks like act_conndscp has been shot down by the kernel people, at > >> least in its current form. Setting a conntrack mark from tc is regarded > >> as “not sure if it is a good idea”. The other way (conntrack to skb) is > >> fine. That’s sort of good news in that ingress is the hard bit as it’s > >> problematic with iptables. > >> > >> egress is within iptables coverage - ‘just’ need a way to store a DSCP & > >> flag to conntrack mark. > > > > Never give in, never surrender. > > > > Given in. Surrendered. :( FWIW I've applied an updated patch with your iptables 'abomination' and it's been working without issue. ___ Cake mailing list Cake@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/cake
Re: [Cake] [Ecn-sane] The two SCE tests I have in mind
On Mon, Apr 1, 2019 at 6:03 PM Stephen Hemminger wrote: > > On Sun, 24 Mar 2019 13:32:03 +0100 > Michael Richardson wrote: > > > Jonathan Morton wrote: > > >> On 24 Mar, 2019, at 12:05 pm, Pete Heist wrote: > > >> > > >> tcpdump -r file.pcap udp port 2112 and greater 80 and "ip[1] != 0x1” > > >> > > >> “greater 80” ignores the handshake packets and 0x1 is whatever TOS > > >> value we want to make sure the packets contain. We can use different > > >> filters for other traffic. > > > > > Bear in mind that the TOS byte contains ECN as well as DSCP fields, > > and > > > the latter is left-justified. > > > > libpcap should probably learn about DSCN bits to avoid people having to > > think so much :-) Well, I still have nothing better than tcptrace + xplot. > > > > Send patches to me/github. > > > > Libpcap is ancient history by now. It is like ifconfig, everyone still can't > reprogram > their brain; but the tool is on life support. > > All development is happening on wireshark/tshark. > ___ > Cake mailing list > Cake@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/cake -- Dave Täht CTO, TekLibre, LLC http://www.teklibre.com Tel: 1-831-205-9740 ___ Cake mailing list Cake@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/cake
Re: [Cake] [Ecn-sane] The two SCE tests I have in mind
On Sun, 24 Mar 2019 13:32:03 +0100 Michael Richardson wrote: > Jonathan Morton wrote: > >> On 24 Mar, 2019, at 12:05 pm, Pete Heist wrote: > >> > >> tcpdump -r file.pcap udp port 2112 and greater 80 and "ip[1] != 0x1” > >> > >> “greater 80” ignores the handshake packets and 0x1 is whatever TOS > >> value we want to make sure the packets contain. We can use different > >> filters for other traffic. > > > Bear in mind that the TOS byte contains ECN as well as DSCP fields, and > > the latter is left-justified. > > libpcap should probably learn about DSCN bits to avoid people having to > think so much :-) > > Send patches to me/github. > Libpcap is ancient history by now. It is like ifconfig, everyone still can't reprogram their brain; but the tool is on life support. All development is happening on wireshark/tshark. ___ Cake mailing list Cake@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/cake
Re: [Cake] act_conndscp
> On 23 Mar 2019, at 18:35, Kevin Darbyshire-Bryant > wrote: > > > >> On 22 Mar 2019, at 21:24, Kevin Darbyshire-Bryant >> wrote: >> >> It looks like act_conndscp has been shot down by the kernel people, at least >> in its current form. Setting a conntrack mark from tc is regarded as “not >> sure if it is a good idea”. The other way (conntrack to skb) is fine. >> That’s sort of good news in that ingress is the hard bit as it’s problematic >> with iptables. >> >> egress is within iptables coverage - ‘just’ need a way to store a DSCP & >> flag to conntrack mark. > > Never give in, never surrender. > Given in. Surrendered. ___ Cake mailing list Cake@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/cake
