** 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)
** Changed in: linux-bluefield (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/2015136
Title:
Support hardware stats for tc actions
Status in linux-bluefield package in Ubuntu:
Invalid
Status in linux-bluefield source package in Focal:
In Progress
Bug description:
Support hardware stats for tc actions
* Explain the bug(s)
tc hardware stats are not offloaded from some offloaded actions (pedit,
sample, skbedit)
* brief explanation of fixes
Implement the necessary callbacks to report back stats for these actions.
* How to test
Configure two mlx5 rep devices and VFs.
Add tc offloaded tc rules with pedit action, and hit that rule with traffic
e.g:
mac1=`cat /sys/class/net/$VF/address`
mac2=`cat /sys/class/net/$VF2/address`
fake_mac="20:22:33:44:55:66"
IP1="7.7.7.1"
IP2="7.7.7.2"
function config_vf() {
local ns=$1
local vf=$2
local rep=$3
local ip=$4 # optional
local mac=$5 # optional
local prefix=24
if [[ "$ip" == *":"* ]]; then
# ipv6
prefix=64
fi
echo "[$ns] VF $vf (${mac:+$mac/}$ip) -> REP $rep"
ip address flush dev $rep
ip link set dev $rep up
ip netns add $ns
${mac:+ip link set $vf address $mac}
ip link set $vf netns $ns
${ip:+ip -netns $ns address replace dev $vf $ip/$prefix}
ip -netns $ns link set $vf up
}
tc qdisc add dev $REP ingress
tc qdisc add dev $REP2 ingress
config_vf ns0 $VF $REP $IP1
config_vf ns1 $VF2 $REP2 $IP2
tc filter add dev $REP ingress protocol arp prio 1 flower \
action mirred egress redirect dev $REP2
tc filter add dev $REP2 ingress protocol arp prio 1 flower \
action mirred egress redirect dev $REP
echo "add ct rules"
# req
tc filter add dev $REP ingress protocol ip prio 2 flower \
dst_mac $fake_mac ct_state -trk \
action ct action goto chain 1
tc filter add dev $REP ingress protocol ip chain 1 prio 2 flower \
dst_mac $fake_mac ct_state +trk+new \
action ct commit \
action pedit ex munge eth dst set $mac2 pipe \
action mirred egress redirect dev $REP2
tc filter add dev $REP ingress protocol ip chain 1 prio 2 flower \
dst_mac $fake_mac ct_state +trk+est \
action pedit ex munge eth dst set $mac2 pipe \
action mirred egress redirect dev $REP2
# reply chain0,ct -> chain1,fwd
tc filter add dev $REP2 ingress protocol ip prio 2 flower \
dst_mac $mac1 \
action ct action goto chain 1
tc filter add dev $REP2 ingress protocol ip prio 2 chain 1 flower \
dst_mac $mac1 ct_state +trk+est \
action mirred egress redirect dev $REP
echo "run traffic"
ip netns exec ns1 timeout 13 iperf -s &
sleep 0.5
ip netns exec ns0 ip n r $IP2 dev $VF lladdr $fake_mac
ip netns exec ns0 timeout 13 iperf -t 12 -c $IP2 &
tc -s filter show dev $REP ingress
see pedit hw counters are advancing (or not if patches not applied):
filter pref 2 flower
filter pref 2 flower handle 0x1
dst_mac 20:22:33:44:55:66
eth_type ipv4
ct_state -trk
in_hw in_hw_count 1
action order 1: ct zone 0 pipe
index 1 ref 1 bind 1 installed 2 sec used 0 sec firstused 2 sec
Action statistics:
Sent 6521850590 bytes 4307703 pkt (dropped 0, overlimits 0 requeues 0)
Sent software 112 bytes 2 pkt
Sent hardware 6521850478 bytes 4307701 pkt
backlog 0b 0p requeues 0
action order 2: gact action goto chain 1
random type none pass val 0
index 1 ref 1 bind 1 installed 2 sec used 0 sec firstused 2 sec
Action statistics:
Sent 6521850590 bytes 4307703 pkt (dropped 0, overlimits 0 requeues 0)
Sent software 112 bytes 2 pkt
Sent hardware 6521850478 bytes 4307701 pkt
backlog 0b 0p requeues 0
* What it could break.
Hardware counters of tc pedit, sample, and skbedit actions.
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