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selftests: forwarding: lib: Parameterize IGMPv3/MLDv2 generation

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In order to generate IGMPv3 and MLDv2 packets on the fly, the
functions that generate these packets need to be able to generate
packets for different groups and different sources. Generating MLDv2
packets further needs the source address of the packet for purposes of
checksum calculation. Add the necessary parameters, and generate the
payload accordingly by dispatching to helpers added in the previous
patches.

Adjust the sole client, bridge_mdb.sh, as well.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata 2023-02-02 18:59:31 +01:00 committed by David S. Miller
parent 952e0ee38c
commit 506a1ac9d3
2 changed files with 31 additions and 14 deletions
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9
tools/testing/selftests/net/forwarding/bridge_mdb.sh
View File

@ -1029,7 +1029,7 @@ ctrl_igmpv3_is_in_test()
# IS_IN ( 192.0.2.2 )
$MZ $h1.10 -c 1 -A 192.0.2.1 -B 239.1.1.1 \
-t ip proto=2,p=$(igmpv3_is_in_get) -q
-t ip proto=2,p=$(igmpv3_is_in_get 239.1.1.1 192.0.2.2) -q
bridge -d mdb show dev br0 vid 10 | grep 239.1.1.1 | grep -q 192.0.2.2
check_fail $? "Permanent entry affected by IGMP packet"
@ -1042,7 +1042,7 @@ ctrl_igmpv3_is_in_test()
# IS_IN ( 192.0.2.2 )
$MZ $h1.10 -c 1 -A 192.0.2.1 -B 239.1.1.1 \
-t ip proto=2,p=$(igmpv3_is_in_get) -q
-t ip proto=2,p=$(igmpv3_is_in_get 239.1.1.1 192.0.2.2) -q
bridge -d mdb show dev br0 vid 10 | grep 239.1.1.1 | grep -v "src" | \
grep -q 192.0.2.2
@ -1067,8 +1067,9 @@ ctrl_mldv2_is_in_test()
filter_mode include source_list 2001:db8:1::1
# IS_IN ( 2001:db8:1::2 )
local p=$(mldv2_is_in_get fe80::1 ff0e::1 2001:db8:1::2)
$MZ -6 $h1.10 -c 1 -A fe80::1 -B ff0e::1 \
-t ip hop=1,next=0,p=$(mldv2_is_in_get) -q
-t ip hop=1,next=0,p="$p" -q
bridge -d mdb show dev br0 vid 10 | grep ff0e::1 | \
grep -q 2001:db8:1::2
@ -1082,7 +1083,7 @@ ctrl_mldv2_is_in_test()
# IS_IN ( 2001:db8:1::2 )
$MZ -6 $h1.10 -c 1 -A fe80::1 -B ff0e::1 \
-t ip hop=1,next=0,p=$(mldv2_is_in_get) -q
-t ip hop=1,next=0,p="$p" -q
bridge -d mdb show dev br0 vid 10 | grep ff0e::1 | grep -v "src" | \
grep -q 2001:db8:1::2

36
tools/testing/selftests/net/forwarding/lib.sh
View File

@ -1767,26 +1767,35 @@ payload_template_nbytes()
igmpv3_is_in_get()
{
local GRP=$1; shift
local IP=$1; shift
local igmpv3
# IS_IN ( $IP )
igmpv3=$(:
)"22:"$( : Type - Membership Report
)"00:"$( : Reserved
)"2a:f8:"$( : Checksum
)"CHECKSUM:"$( : Checksum
)"00:00:"$( : Reserved
)"00:01:"$( : Number of Group Records
)"01:"$( : Record Type - IS_IN
)"00:"$( : Aux Data Len
)"00:01:"$( : Number of Sources
)"ef:01:01:01:"$( : Multicast Address - 239.1.1.1
)"c0:00:02:02"$( : Source Address - 192.0.2.2
)"$(ipv4_to_bytes $GRP):"$( : Multicast Address
)"$(ipv4_to_bytes $IP)"$( : Source Address
)
local checksum=$(payload_template_calc_checksum "$igmpv3")
echo $igmpv3
payload_template_expand_checksum "$igmpv3" $checksum
}
mldv2_is_in_get()
{
local SIP=$1; shift
local GRP=$1; shift
local IP=$1; shift
local hbh
local icmpv6
@ -1799,17 +1808,24 @@ mldv2_is_in_get()
icmpv6=$(:
)"8f:"$( : Type - MLDv2 Report
)"00:"$( : Code
)"45:39:"$( : Checksum
)"CHECKSUM:"$( : Checksum
)"00:00:"$( : Reserved
)"00:01:"$( : Number of Group Records
)"01:"$( : Record Type - IS_IN
)"00:"$( : Aux Data Len
)"00:01:"$( : Number of Sources
)"ff:0e:00:00:00:00:00:00:"$( : Multicast address - ff0e::1
)"00:00:00:00:00:00:00:01:"$( :
)"20:01:0d:b8:00:01:00:00:"$( : Source Address - 2001:db8:1::2
)"00:00:00:00:00:00:00:02:"$( :
)"$(ipv6_to_bytes $GRP):"$( : Multicast address
)"$(ipv6_to_bytes $IP):"$( : Source Address
)
echo ${hbh}${icmpv6}
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
}