The testsuite that checks for mcast_max_groups functionality will need to
wipe the added groups as well. Add helpers to build an IGMP or MLD packets
announcing that host is leaving a given group.
Signed-off-by: Petr Machata <pe...@nvidia.com>
Acked-by: Nikolay Aleksandrov <ra...@blackwall.org>
---
tools/testing/selftests/net/forwarding/lib.sh | 50 +++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/tools/testing/selftests/net/forwarding/lib.sh
b/tools/testing/selftests/net/forwarding/lib.sh
index 12ef34ebcbbf..969e570f609e 100755
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -1815,6 +1815,21 @@ igmpv3_is_in_get()
payload_template_expand_checksum "$igmpv3" $checksum
}
+igmpv2_leave_get()
+{
+ local GRP=$1; shift
+
+ local payload=$(:
+ )"17:"$( : Type - Leave Group
+ )"00:"$( : Max Resp Time - not meaningful
+ )"CHECKSUM:"$( : Checksum
+ )"$(ipv4_to_bytes $GRP)"$( : Group Address
+ )
+ local checksum=$(payload_template_calc_checksum "$payload")
+
+ payload_template_expand_checksum "$payload" $checksum
+}
+
mldv2_is_in_get()
{
local SIP=$1; shift
@@ -1858,3 +1873,38 @@ mldv2_is_in_get()
payload_template_expand_checksum "$hbh$icmpv6" $checksum
}
+
+mldv1_done_get()
+{
+ local SIP=$1; shift
+ local GRP=$1; shift
+
+ local hbh
+ local icmpv6
+
+ hbh=$(:
+ )"3a:"$( : Next Header - ICMPv6
+ )"00:"$( : Hdr Ext Len
+ )"00:00:00:00:00:00:"$( : Options and Padding
+ )
+
+ icmpv6=$(:
+ )"84:"$( : Type - MLDv1 Done
+ )"00:"$( : Code
+ )"CHECKSUM:"$( : Checksum
+ )"00:00:"$( : Max Resp Delay - not
meaningful
+ )"00:00:"$( : Reserved
+ )"$(ipv6_to_bytes $GRP):"$( : Multicast address
+ )
+
+ local len=$(u16_to_bytes $(payload_template_nbytes $icmpv6))
+ local sudohdr=$(:
+ )"$(ipv6_to_bytes $SIP):"$( : SIP
+ )"$(ipv6_to_bytes $GRP):"$( : DIP is multicast address
+ )"${len}:"$( : Upper-layer length
+ )"00:3a:"$( : Zero and next-header
+ )
+ local checksum=$(payload_template_calc_checksum ${sudohdr}${icmpv6})
+
+ payload_template_expand_checksum "$hbh$icmpv6" $checksum
+}
--
2.39.0
