tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0
2
3nh_stats_do_test()
4{
5 local what=$1; shift
6 local nh1_id=$1; shift
7 local nh2_id=$1; shift
8 local group_id=$1; shift
9 local stats_get=$1; shift
10 local mz="$@"
11
12 local dp
13
14 RET=0
15
16 sleep 2
17 for ((dp=0; dp < 60000; dp += 10000)); do
18 local dd
19 local t0_rp12=$(link_stats_tx_packets_get $rp12)
20 local t0_rp13=$(link_stats_tx_packets_get $rp13)
21 local t0_nh1=$($stats_get $group_id $nh1_id)
22 local t0_nh2=$($stats_get $group_id $nh2_id)
23
24 ip vrf exec vrf-h1 \
25 $mz -q -p 64 -d 0 -t udp \
26 "sp=1024,dp=$((dp))-$((dp + 10000))"
27 sleep 2
28
29 local t1_rp12=$(link_stats_tx_packets_get $rp12)
30 local t1_rp13=$(link_stats_tx_packets_get $rp13)
31 local t1_nh1=$($stats_get $group_id $nh1_id)
32 local t1_nh2=$($stats_get $group_id $nh2_id)
33
34 local d_rp12=$((t1_rp12 - t0_rp12))
35 local d_rp13=$((t1_rp13 - t0_rp13))
36 local d_nh1=$((t1_nh1 - t0_nh1))
37 local d_nh2=$((t1_nh2 - t0_nh2))
38
39 dd=$(absval $((d_rp12 - d_nh1)))
40 ((dd < 10))
41 check_err $? "Discrepancy between link and $stats_get: d_rp12=$d_rp12 d_nh1=$d_nh1"
42
43 dd=$(absval $((d_rp13 - d_nh2)))
44 ((dd < 10))
45 check_err $? "Discrepancy between link and $stats_get: d_rp13=$d_rp13 d_nh2=$d_nh2"
46 done
47
48 log_test "NH stats test $what"
49}
50
51nh_stats_test_dispatch_swhw()
52{
53 local what=$1; shift
54 local nh1_id=$1; shift
55 local nh2_id=$1; shift
56 local group_id=$1; shift
57 local mz="$@"
58
59 nh_stats_do_test "$what" "$nh1_id" "$nh2_id" "$group_id" \
60 nh_stats_get "${mz[@]}"
61
62 xfail_on_veth $rp11 \
63 nh_stats_do_test "HW $what" "$nh1_id" "$nh2_id" "$group_id" \
64 nh_stats_get_hw "${mz[@]}"
65}
66
67nh_stats_test_dispatch()
68{
69 local nhgtype=$1; shift
70 local what=$1; shift
71 local nh1_id=$1; shift
72 local nh2_id=$1; shift
73 local group_id=$1; shift
74 local mz="$@"
75
76 local enabled
77
78 if ! ip nexthop help 2>&1 | grep -q hw_stats; then
79 log_test_skip "NH stats test: ip doesn't support HW stats"
80 return
81 fi
82
83 ip nexthop replace id $group_id group $nh1_id/$nh2_id \
84 hw_stats on type $nhgtype
85 enabled=$(ip -s -j -d nexthop show id $group_id |
86 jq '.[].hw_stats.enabled')
87 if [[ $enabled == true ]]; then
88 nh_stats_test_dispatch_swhw "$what" "$nh1_id" "$nh2_id" \
89 "$group_id" "${mz[@]}"
90 elif [[ $enabled == false ]]; then
91 check_err 1 "HW stats still disabled after enabling"
92 log_test "NH stats test"
93 else
94 log_test_skip "NH stats test: ip doesn't report hw_stats info"
95 fi
96
97 ip nexthop replace id $group_id group $nh1_id/$nh2_id \
98 hw_stats off type $nhgtype
99}
100
101__nh_stats_test_v4()
102{
103 local nhgtype=$1; shift
104
105 sysctl_set net.ipv4.fib_multipath_hash_policy 1
106 nh_stats_test_dispatch $nhgtype "IPv4" 101 102 103 \
107 $MZ $h1 -A 192.0.2.2 -B 198.51.100.2
108 sysctl_restore net.ipv4.fib_multipath_hash_policy
109}
110
111__nh_stats_test_v6()
112{
113 local nhgtype=$1; shift
114
115 sysctl_set net.ipv6.fib_multipath_hash_policy 1
116 nh_stats_test_dispatch $nhgtype "IPv6" 104 105 106 \
117 $MZ -6 $h1 -A 2001:db8:1::2 -B 2001:db8:2::2
118 sysctl_restore net.ipv6.fib_multipath_hash_policy
119}
120
121check_nhgw16()
122{
123 local nhid=$1; shift
124
125 ip nexthop replace id 9999 group "$nhid,65535" &>/dev/null
126 if (( $? )); then
127 log_test_skip "16-bit multipath tests" \
128 "iproute2 or the kernel do not support 16-bit next hop weights"
129 return 1
130 fi
131 ip nexthop del id 9999 ||:
132}