[PATCH net-next mlxsw v2 11/16] selftests: forwarding: lib: Add helpers for IP address handling
From: Petr Machata <petrm@nvidia.com>
Date: 2023-02-01 17:30:24
Also in:
bridge
Subsystem:
kernel selftest framework, networking [general], networking [ipv4/ipv6], the rest · Maintainers:
Shuah Khan, Shuah Khan, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
In order to generate IGMPv3 and MLDv2 packets on the fly, we will need helpers to expand IPv4 and IPv6 addresses given as parameters in mausezahn payload notation. Add helpers that do it. Signed-off-by: Petr Machata <petrm@nvidia.com> Acked-by: Nikolay Aleksandrov <razor@blackwall.org> --- tools/testing/selftests/net/forwarding/lib.sh | 37 +++++++++++++++++++ 1 file changed, 37 insertions(+)
diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index 0cfa0b699803..409ff3799b55 100755
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh@@ -1693,6 +1693,43 @@ hw_stats_monitor_test() log_test "${type}_stats notifications" } +ipv4_to_bytes() +{ + local IP=$1; shift + + printf '%02x:' ${IP//./ } | + sed 's/:$//' +} + +# Convert a given IPv6 address, `IP' such that the :: token, if present, is +# expanded, and each 16-bit group is padded with zeroes to be 4 hexadecimal +# digits. An optional `BYTESEP' parameter can be given to further separate +# individual bytes of each 16-bit group. +expand_ipv6() +{ + local IP=$1; shift + local bytesep=$1; shift + + local cvt_ip=${IP/::/_} + local colons=${cvt_ip//[^:]/} + local allcol=::::::: + # IP where :: -> the appropriate number of colons: + local allcol_ip=${cvt_ip/_/${allcol:${#colons}}} + + echo $allcol_ip | tr : '\n' | + sed s/^/0000/ | + sed 's/.*\(..\)\(..\)/\1'"$bytesep"'\2/' | + tr '\n' : | + sed 's/:$//' +} + +ipv6_to_bytes() +{ + local IP=$1; shift + + expand_ipv6 "$IP" : +} + igmpv3_is_in_get() { local igmpv3
--
2.39.0