** Also affects: linux-bluefield (Ubuntu Focal)
Importance: Undecided
Status: New
** Changed in: linux-bluefield (Ubuntu Focal)
Importance: Undecided => Medium
** Changed in: linux-bluefield (Ubuntu Focal)
Status: New => In Progress
** Changed in: linux-bluefield (Ubuntu Focal)
Assignee: (unassigned) => William Tu (wtu)
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https://bugs.launchpad.net/bugs/2008136
Title:
netfilter: flowtable: add counter support in HW offload
Status in linux-bluefield package in Ubuntu:
New
Status in linux-bluefield source package in Focal:
In Progress
Bug description:
* Explain the bug(s)
While conntrack tuples are offloaded to hardware and conntrack packet
accounting is enabled, offloaded packets aren't counted.
* Brief explanation of fixes
Cherry-pick. No adaptation. First commit for SW, second commit of HW
offloaded rules.
ef803b3cf96a netfilter: flowtable: add counter support in HW offload
9312eabab4a6 netfilter: conntrack: add nf_ct_acct_add()
note: need to change a little due to cherry-pick conflict with
24384e28586c netfilter: flowtable: Set offload timeouts according to proto
values
* 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 TCP connection, e.g:
on mlx5 VF1 iperf -s
on mlx5 VF2 iperf -c <ip> -t 10
Optional: In different terminal, while traffic is running, check for offload:
tcpdump -nnepi <RELEVANT_MLX5_REP> tcp
and see no iperf tcp packets.
Dump conntrack with relevant ip:
cat /proc/net/nf_conntrack | grep -i <ip>
See counters (packets=.*) advancing while tuples were offloaded:
ipv4 2 tcp 6 src=1.1.1.2 dst=1.1.1.3 sport=56394 dport=5001
packets=2 bytes=112 src=1.1.1.3 dst=1.1.1.2 sport=5001 dport=56394 packets=1777
bytes=665340 [HW_OFFLOAD] mark=0 zone=0 use=3
* What it could break.
Nothing.
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