Public bug reported:
* Explain the bug(s)
UDP single sided connections aren't offloaded.
* brief explanation of fixes
Add support for to offload single sided UDP connections by offloading only one
side, and offloading the second side when/if it comes.
* How to test
Create OVS bridge with 2 devices mlx5 rep devices.
Enable HW offload and configure regular connection tracking OpenFlow rules:
e.g:
ovs-ofctl del-flows br-ovs
ovs-ofctl add-flow br-ovs arp,actions=normal
ovs-ofctl add-flow br-ovs "table=0, ip,ct_state=-trk actions=ct(table=1)"
ovs-ofctl add-flow br-ovs "table=1, ip,ct_state=+trk+new
actions=ct(commit),normal"
ovs-ofctl add-flow br-ovs "table=1, ip,ct_state=+trk+est, actions=normal"
Run a UDP single sided connection, e.g iperf without a server:
on mlx5 VF2 iperf -t 1 -c <ip>-u -b 10pps
Optional: In different terminal, while traffic is running, check for offload:
tcpdump -nnepi <RELEVANT_MLX5_REP> udp
and see no iperf udp packets.
Dump conntrack with relevant ip:
cat /proc/net/nf_conntrack | grep -i <ip> | grep "\[UNREPLIED\]" | grep -q
"\[OFFLOAD\]"
If tuple appears, tuple was offloaded, yet unreplied.
* What it could break.
Single sided udp connections aren't offloaded.
** Affects: linux-bluefield (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2019264
Title:
net/sched: act_ct: offload UDP NEW connections
Status in linux-bluefield package in Ubuntu:
New
Bug description:
* Explain the bug(s)
UDP single sided connections aren't offloaded.
* brief explanation of fixes
Add support for to offload single sided UDP connections by offloading only one
side, and offloading the second side when/if it comes.
* How to test
Create OVS bridge with 2 devices mlx5 rep devices.
Enable HW offload and configure regular connection tracking OpenFlow rules:
e.g:
ovs-ofctl del-flows br-ovs
ovs-ofctl add-flow br-ovs arp,actions=normal
ovs-ofctl add-flow br-ovs "table=0, ip,ct_state=-trk actions=ct(table=1)"
ovs-ofctl add-flow br-ovs "table=1, ip,ct_state=+trk+new
actions=ct(commit),normal"
ovs-ofctl add-flow br-ovs "table=1, ip,ct_state=+trk+est, actions=normal"
Run a UDP single sided connection, e.g iperf without a server:
on mlx5 VF2 iperf -t 1 -c <ip>-u -b 10pps
Optional: In different terminal, while traffic is running, check for offload:
tcpdump -nnepi <RELEVANT_MLX5_REP> udp
and see no iperf udp packets.
Dump conntrack with relevant ip:
cat /proc/net/nf_conntrack | grep -i <ip> | grep "\[UNREPLIED\]" | grep -q
"\[OFFLOAD\]"
If tuple appears, tuple was offloaded, yet unreplied.
* What it could break.
Single sided udp connections aren't offloaded.
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