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| author | Yuyang Huang <yuyanghuang@google.com> | 2025-06-19 06:51:16 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2025-06-22 19:32:04 +0300 |
| commit | 14966a8df77e2dffdf765b56abe194aa6b0da325 (patch) | |
| tree | 92615d2810cc83a9f6a1e43b3edc807fe448a7f0 | |
| parent | 091d019adce033118776ef93b50a268f715ae8f6 (diff) | |
| download | linux-14966a8df77e2dffdf765b56abe194aa6b0da325.tar.xz | |
selftest: add selftest for anycast notifications
This commit adds a new kernel selftest to verify RTNLGRP_IPV6_ACADDR
notifications. The test works by adding/removing a dummy interface,
enabling packet forwarding, and then confirming that user space can
correctly receive anycast notifications.
The test relies on the iproute2 version to be 6.13+.
Tested by the following command:
$ vng -v --user root --cpus 16 -- \
make -C tools/testing/selftests TARGETS=net
TEST_PROGS=rtnetlink_notification.sh \
TEST_GEN_PROGS="" run_tests
Cc: Maciej Żenczykowski <maze@google.com>
Cc: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: Yuyang Huang <yuyanghuang@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rwxr-xr-x | tools/testing/selftests/net/rtnetlink_notification.sh | 44 |
1 files changed, 43 insertions, 1 deletions
diff --git a/tools/testing/selftests/net/rtnetlink_notification.sh b/tools/testing/selftests/net/rtnetlink_notification.sh index 39c1b815bbe4..3f9780232bd6 100755 --- a/tools/testing/selftests/net/rtnetlink_notification.sh +++ b/tools/testing/selftests/net/rtnetlink_notification.sh @@ -8,9 +8,11 @@ ALL_TESTS=" kci_test_mcast_addr_notification + kci_test_anycast_addr_notification " source lib.sh +test_dev="test-dummy1" kci_test_mcast_addr_notification() { @@ -18,7 +20,6 @@ kci_test_mcast_addr_notification() local tmpfile local monitor_pid local match_result - local test_dev="test-dummy1" tmpfile=$(mktemp) defer rm "$tmpfile" @@ -56,6 +57,47 @@ kci_test_mcast_addr_notification() return $RET } +kci_test_anycast_addr_notification() +{ + RET=0 + local tmpfile + local monitor_pid + local match_result + + tmpfile=$(mktemp) + defer rm "$tmpfile" + + ip monitor acaddress > "$tmpfile" & + monitor_pid=$! + defer kill_process "$monitor_pid" + sleep 1 + + if [ ! -e "/proc/$monitor_pid" ]; then + RET=$ksft_skip + log_test "anycast addr notification: iproute2 too old" + return "$RET" + fi + + ip link add name "$test_dev" type dummy + check_err $? "failed to add dummy interface" + ip link set "$test_dev" up + check_err $? "failed to set dummy interface up" + sysctl -qw net.ipv6.conf."$test_dev".forwarding=1 + ip link del dev "$test_dev" + check_err $? "Failed to delete dummy interface" + sleep 1 + + # There should be 2 line matches as follows. + # 9: dummy2 inet6 any fe80:: scope global + # Deleted 9: dummy2 inet6 any fe80:: scope global + match_result=$(grep -cE "$test_dev.*(fe80::)" "$tmpfile") + if [ "$match_result" -ne 2 ]; then + RET=$ksft_fail + fi + log_test "anycast addr notification: Expected 2 matches, got $match_result" + return "$RET" +} + #check for needed privileges if [ "$(id -u)" -ne 0 ];then RET=$ksft_skip |