W dniu 08.11.2018 o 17:06, David Ahern pisze:
On 11/8/18 6:33 AM, Paweł Staszewski wrote:
W dniu 07.11.2018 o 22:06, David Ahern pisze:
On 11/3/18 6:24 PM, Paweł Staszewski wrote:
Does your setup have any other device types besides physical ports with
VLANs (e.g., any macvlans or bonds)?
no.
just
phy(mlnx)->vlans only config
VLAN and non-VLAN (and a mix) seem to work ok. Patches are here:
https://github.com/dsahern/linux.git bpf/kernel-tables-wip
I got lazy with the vlan exports; right now it requires 8021q to be
builtin (CONFIG_VLAN_8021Q=y)
You can use the xdp_fwd sample:
make O=kbuild -C samples/bpf -j 8
Copy samples/bpf/xdp_fwd_kern.o and samples/bpf/xdp_fwd to the server
and run:
./xdp_fwd <list of NIC ports>
e.g., in my testing I run:
xdp_fwd eth1 eth2 eth3 eth4
All of the relevant forwarding ports need to be on the same command
line. This version populates a second map to verify the egress port has
XDP enabled.
Installed today on some lab server with mellanox connectx4
And trying some simple static routing first - but after enabling xdp
program - receiver is not receiving frames
Route table is simple as possible for tests :)
icmp ping test send from 192.168.22.237 to 172.16.0.2 - incomming
packets on vlan 4081
ip r
default via 192.168.22.236 dev vlan4081
172.16.0.0/30 dev vlan1740 proto kernel scope link src 172.16.0.1
192.168.22.0/24 dev vlan4081 proto kernel scope link src 192.168.22.205
neigh table:
ip neigh ls
192.168.22.237 dev vlan4081 lladdr 00:25:90:fb:a6:8d REACHABLE
172.16.0.2 dev vlan1740 lladdr ac:1f:6b:2c:2e:5a REACHABLE
and interfaces:
4: enp175s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state
UP mode DEFAULT group default qlen 1000
link/ether ac:1f:6b:07:c8:90 brd ff:ff:ff:ff:ff:ff
5: enp175s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state
UP mode DEFAULT group default qlen 1000
link/ether ac:1f:6b:07:c8:91 brd ff:ff:ff:ff:ff:ff
6: vlan4081@enp175s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UP mode DEFAULT group default qlen 1000
link/ether ac:1f:6b:07:c8:90 brd ff:ff:ff:ff:ff:ff
7: vlan1740@enp175s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UP mode DEFAULT group default qlen 1000
link/ether ac:1f:6b:07:c8:91 brd ff:ff:ff:ff:ff:ff
5: enp175s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 xdp/id:5 qdisc
mq state UP group default qlen 1000
link/ether ac:1f:6b:07:c8:91 brd ff:ff:ff:ff:ff:ff
inet6 fe80::ae1f:6bff:fe07:c891/64 scope link
valid_lft forever preferred_lft forever
6: vlan4081@enp175s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UP group default qlen 1000
link/ether ac:1f:6b:07:c8:90 brd ff:ff:ff:ff:ff:ff
inet 192.168.22.205/24 scope global vlan4081
valid_lft forever preferred_lft forever
inet6 fe80::ae1f:6bff:fe07:c890/64 scope link
valid_lft forever preferred_lft forever
7: vlan1740@enp175s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UP group default qlen 1000
link/ether ac:1f:6b:07:c8:91 brd ff:ff:ff:ff:ff:ff
inet 172.16.0.1/30 scope global vlan1740
valid_lft forever preferred_lft forever
inet6 fe80::ae1f:6bff:fe07:c891/64 scope link
valid_lft forever preferred_lft forever
xdp program detached:
Receiving side tcpdump:
14:28:09.141233 IP 192.168.22.237 > 172.16.0.2: ICMP echo request, id
30227, seq 487, length 64
I can see icmp requests
enabling xdp
./xdp_fwd enp175s0f1 enp175s0f0
4: enp175s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 xdp qdisc mq
state UP mode DEFAULT group default qlen 1000
link/ether ac:1f:6b:07:c8:90 brd ff:ff:ff:ff:ff:ff
prog/xdp id 5 tag 3c231ff1e5e77f3f
5: enp175s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 xdp qdisc mq
state UP mode DEFAULT group default qlen 1000
link/ether ac:1f:6b:07:c8:91 brd ff:ff:ff:ff:ff:ff
prog/xdp id 5 tag 3c231ff1e5e77f3f
6: vlan4081@enp175s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UP mode DEFAULT group default qlen 1000
link/ether ac:1f:6b:07:c8:90 brd ff:ff:ff:ff:ff:ff
7: vlan1740@enp175s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UP mode DEFAULT group default qlen 1000
link/ether ac:1f:6b:07:c8:91 brd ff:ff:ff:ff:ff:ff
What hardware is this?
Start with:
echo 1 > /sys/kernel/debug/tracing/events/xdp/enable
cat /sys/kernel/debug/tracing/trace_pipe
cat /sys/kernel/debug/tracing/trace_pipe
<idle>-0 [045] ..s. 68469.467752: xdp_devmap_xmit:
ndo_xdp_xmit map_id=32 map_index=5 action=REDIRECT sent=0 drops=1
from_ifindex=4 to_ifindex=5 err=-6
<idle>-0 [045] ..s. 68470.483836: xdp_redirect_map:
prog_id=30 action=REDIRECT ifindex=4 to_ifindex=5 err=0 map_id=32
map_index=5
<idle>-0 [045] ..s. 68470.483837: xdp_devmap_xmit:
ndo_xdp_xmit map_id=32 map_index=5 action=REDIRECT sent=0 drops=1
from_ifindex=4 to_ifindex=5 err=-6
<idle>-0 [045] ..s. 68471.503853: xdp_redirect_map:
prog_id=30 action=REDIRECT ifindex=4 to_ifindex=5 err=0 map_id=32
map_index=5
<idle>-0 [045] ..s. 68471.503853: xdp_devmap_xmit:
ndo_xdp_xmit map_id=32 map_index=5 action=REDIRECT sent=0 drops=1
from_ifindex=4 to_ifindex=5 err=-6
<idle>-0 [045] ..s. 68472.527871: xdp_redirect_map:
prog_id=30 action=REDIRECT ifindex=4 to_ifindex=5 err=0 map_id=32
map_index=5
<idle>-0 [045] ..s. 68472.527877: xdp_devmap_xmit:
ndo_xdp_xmit map_id=32 map_index=5 action=REDIRECT sent=0 drops=1
from_ifindex=4 to_ifindex=5 err=-6
<idle>-0 [045] ..s. 68473.551876: xdp_redirect_map:
prog_id=30 action=REDIRECT ifindex=4 to_ifindex=5 err=0 map_id=32
map_index=5
<idle>-0 [045] ..s. 68473.551880: xdp_devmap_xmit:
ndo_xdp_xmit map_id=32 map_index=5 action=REDIRECT sent=0 drops=1
from_ifindex=4 to_ifindex=5 err=-6
<idle>-0 [045] ..s. 68474.575893: xdp_redirect_map:
prog_id=30 action=REDIRECT ifindex=4 to_ifindex=5 err=0 map_id=32
map_index=5
<idle>-0 [045] ..s. 68474.575897: xdp_devmap_xmit:
ndo_xdp_xmit map_id=32 map_index=5 action=REDIRECT sent=0 drops=1
from_ifindex=4 to_ifindex=5 err=-6
<idle>-0 [045] ..s. 68475.599909: xdp_redirect_map:
prog_id=30 action=REDIRECT ifindex=4 to_ifindex=5 err=0 map_id=32
map_index=5
<idle>-0 [045] ..s. 68475.599912: xdp_devmap_xmit:
ndo_xdp_xmit map_id=32 map_index=5 action=REDIRECT sent=0 drops=1
from_ifindex=4 to_ifindex=5 err=-6
>From there, you can check the FIB lookups:
sysctl -w kernel.perf_event_max_stack=16
perf record -e fib:* -a -g -- sleep 5
perf script
swapper 0 [045] 68493.746274: fib:fib_table_lookup: table 254 oif 0
iif 6 proto 1 192.168.22.237/0 -> 172.16.0.2/0 tos 0 scope 0 flags 0 ==>
dev vlan1740 gw 0.0.0.0 src 172.16.0.1 err 0
7fff818c13b5 fib_table_lookup ([kernel.kallsyms])
swapper 0 [045] 68494.770287: fib:fib_table_lookup: table 254 oif 0
iif 6 proto 1 192.168.22.237/0 -> 172.16.0.2/0 tos 0 scope 0 flags 0 ==>
dev vlan1740 gw 0.0.0.0 src 172.16.0.1 err 0
7fff818c13b5 fib_table_lookup ([kernel.kallsyms])
swapper 0 [045] 68495.794304: fib:fib_table_lookup: table 254 oif 0
iif 6 proto 1 192.168.22.237/0 -> 172.16.0.2/0 tos 0 scope 0 flags 0 ==>
dev vlan1740 gw 0.0.0.0 src 172.16.0.1 err 0
7fff818c13b5 fib_table_lookup ([kernel.kallsyms])
swapper 0 [045] 68496.818308: fib:fib_table_lookup: table 254 oif 0
iif 6 proto 1 192.168.22.237/0 -> 172.16.0.2/0 tos 0 scope 0 flags 0 ==>
dev vlan1740 gw 0.0.0.0 src 172.16.0.1 err 0
7fff818c13b5 fib_table_lookup ([kernel.kallsyms])
swapper 0 [045] 68497.842313: fib:fib_table_lookup: table 254 oif 0
iif 6 proto 1 192.168.22.237/0 -> 172.16.0.2/0 tos 0 scope 0 flags 0 ==>
dev vlan1740 gw 0.0.0.0 src 172.16.0.1 err 0
7fff818c13b5 fib_table_lookup ([kernel.kallsyms])
