Rare project developers

[mc36 <>]

well, so to have such a functionality, one just have to put them to
https://github.com/rare-freertr/freeRtr/blob/master/misc/p4lang/include/ig_ctl_qos_in.p4
(and export the proper ones from freerouter too:))

during the vc you also mentioned ebpf... it's a thing, nowadays in openwrt, 
and that one
also can do it btw... rare have an ebpf dataplane (xdp is the new name btw).. 
if you need
inspiration, look at 
https://github.com/rare-freertr/freeRtr/blob/master/misc/native/p4xdp_kern.c
it easily impose mpls and sgt tags on my 5+yo openwrts at 300mbps rate!

root@apl:~# bpftool prog
18: xdp  name xdp_router  tag fcc10189c36376b1
        loaded_at 2022-06-23T15:50:45+0200  uid 0
        xlated 36360B  jited 34340B  memlock 36864B  map_ids 
66,67,68,69,70,71,76,75,77,78,74,72,73
        btf_id 30
root@apl:~# bpftool map
66: array  name cpu_port  flags 0x0
        key 4B  value 4B  max_entries 2  memlock 4096B
        btf_id 30
67: hash  name rx_ports  flags 0x0
        key 4B  value 24B  max_entries 128  memlock 8192B
        btf_id 30
68: hash  name tx_ports  flags 0x0
        key 4B  value 24B  max_entries 128  memlock 8192B
        btf_id 30
69: hash  name vlan_in  flags 0x0
        key 8B  value 4B  max_entries 512  memlock 24576B
        btf_id 30
70: hash  name pppoes  flags 0x0
        key 8B  value 4B  max_entries 128  memlock 8192B
        btf_id 30
71: hash  name vrf_port  flags 0x0
        key 4B  value 72B  max_entries 128  memlock 16384B
        btf_id 30
72: hash  name labels  flags 0x0
        key 4B  value 48B  max_entries 1024  memlock 90112B
        btf_id 30
73: lpm_trie  name routes4  flags 0x1
        key 12B  value 32B  max_entries 2048  memlock 135168B
        btf_id 30
74: lpm_trie  name routes6  flags 0x1
        key 24B  value 32B  max_entries 2048  memlock 159744B
        btf_id 30
75: hash  name bridges  flags 0x0
        key 12B  value 56B  max_entries 1024  memlock 106496B
        btf_id 30
76: hash  name neighs  flags 0x0
        key 4B  value 40B  max_entries 512  memlock 40960B
        btf_id 30
77: hash  name vlan_out  flags 0x0
        key 4B  value 24B  max_entries 512  memlock 32768B
        btf_id 30
78: hash  name bundles  flags 0x0
        key 4B  value 88B  max_entries 256  memlock 32768B
        btf_id 30
root@apl:~# bpftool map dump name labels | grep pack
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 150053,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 150053,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
            "pack": 0,
root@apl:~# cat /proc/cpuinfo
system type             : Qualcomm Atheros QCA956X ver 1 rev 0
machine                 : TP-Link Archer C7 v4
processor               : 0
cpu model               : MIPS 74Kc V5.0
BogoMIPS                : 385.84
wait instruction        : yes
microsecond timers      : yes
tlb_entries             : 32
extra interrupt vector  : yes
hardware watchpoint     : yes, count: 4, address/irw mask: [0x0ffc, 0x0ffc, 
0x0ffb, 0x0ffb]
isa                     : mips1 mips2 mips32r1 mips32r2
ASEs implemented        : mips16 dsp dsp2
Options implemented     : tlb 4kex 4k_cache prefetch mcheck ejtag llsc 
dc_aliases perf_cntr_intr_bit cdmm contextconfig perf
shadow register sets    : 1
kscratch registers      : 0
package                 : 0
core                    : 0
VCED exceptions         : not available
VCEI exceptions         : not available

root@apl:~#



On 6/23/22 16:39, mc36 wrote:
> hi,
> so during the vc i missed the point, that my sw router uplinks over mpls and 
> sgt and none of these are handled in the set parts yet...
> without these, the stuff works as expected:
> the first 10 packets from 5555::6 comes in as flow label 0,
> the packets 10-20 from 5555::6 comes in as flowlabel 0x3039 that is 12345,
> and packets 20-30 from 5555::6 comes in as flowlabel 0xd431 that is 54321...
> and it's completely optional to have anything in the match statements, i mean,
> a dumb acl who matches everything will do the trick, then you can do port 
> based
> (re)marking... if that helps you, we can easily have this functionality in hw
> less than a week.... :)
> br,
> cs
>
>
>
> sid#ping 2001:db8:8319:0:200:11ff:fe11:2222 vrf v2 source hairpin12 tos 0
> pinging 2001:db8:8319::200:11ff:fe11:2222, src=5555::6, vrf=v2, cnt=5, 
> len=64, df=false, tim=1000, gap=0, ttl=255, tos=0, sgt=0, flow=0, fill=0, 
> sweep=false, multi=false
> !!!!!
> result=100%, recv/sent/lost/err=5/5/0/0, rtt min/avg/max/sum=1/1/2/7, ttl 
> min/avg/max=59/59/59, tos min/avg/max=0/0/0
> sid#ping 2001:db8:8319:0:200:11ff:fe11:2222 vrf v2 source hairpin12 tos 123
> pinging 2001:db8:8319::200:11ff:fe11:2222, src=5555::6, vrf=v2, cnt=5, 
> len=64, df=false, tim=1000, gap=0, ttl=255, tos=123, sgt=0, flow=0, fill=0, 
> sweep=false, multi=false
> !!!!!
> result=100%, recv/sent/lost/err=5/5/0/0, rtt min/avg/max/sum=1/1/2/7, ttl 
> min/avg/max=59/59/59, tos min/avg/max=123/123/123
> sid#ping 2001:db8:8319:0:200:11ff:fe11:2222 vrf v2 source hairpin12 tos 222
> pinging 2001:db8:8319::200:11ff:fe11:2222, src=5555::6, vrf=v2, cnt=5, 
> len=64, df=false, tim=1000, gap=0, ttl=255, tos=222, sgt=0, flow=0, fill=0, 
> sweep=false, multi=false
> !!!!!
> result=100%, recv/sent/lost/err=5/5/0/0, rtt min/avg/max/sum=1/1/2/7, ttl 
> min/avg/max=59/59/59, tos min/avg/max=222/222/222
> sid#show config-differences
> ipv4 route v2 0.0.0.0 0.0.0.0 5.5.5.5
> ipv6 route v2 :: :: 5555::5
> policy-map asdf
>    sequence 10 action transit
>    sequence 10 match tos 123
>    sequence 10 set flow set 12345
>    sequence 20 action transit
>    sequence 20 match tos 222
>    sequence 20 set flow set 54321
>    sequence 9999 action transit
>    exit
> hairpin 1
>    exit
> interface hairpin11
>    vrf forwarding v1
>    ipv4 address 5.5.5.5 255.255.255.252
>    ipv6 address 5555::5 ffff:ffff:ffff:ffff::
>    no shutdown
>    no log-link-change
>    exit
> interface hairpin12
>    service-policy-out asdf
>    vrf forwarding v2
>    ipv4 address 5.5.5.6 255.255.255.252
>    ipv6 address 5555::6 ffff:ffff:ffff:ffff::
>    no shutdown
>    no log-link-change
>    exit
>
> sid#show policy-map interface hairpin12 out
> seq     chld   queue   intrvl   byt/int   rxb     rxp   trnsmt
> 10       0         0/128   100         0               990     15     
> tx=990(15) rx=990(15) drp=0(0)
> 20       0         0/128   100         0               330     5       
> tx=330(5) rx=330(5) drp=0(0)
> 9999   0         0/128   100         0               6000   74     
> tx=1918(29) rx=1918(29) drp=0(0)
>
> sid#