On 2/1/26 00:19, Aleksei Oladko wrote:
The test generates VXLAN traffic using mausezahn, where the encapsulated
inner IPv4 packet contains a zero IP header checksum. After VXLAN
decapsulation, such packets do not pass sanity checks in br_netfilter
and are dropped, which causes the test to fail.
Fix this by calculating and setting a valid IPv4 header checksum for the
encapsulated packet generated by mausezahn, so that the packet is accepted
by br_netfilter.
https://virtuozzo.atlassian.net/browse/VSTOR-123249
Signed-off-by: Aleksei Oladko <[email protected]>
---
.../net/forwarding/vxlan_bridge_1d.sh | 26 ++++++++++++-------
1 file changed, 16 insertions(+), 10 deletions(-)
diff --git a/tools/testing/selftests/net/forwarding/vxlan_bridge_1d.sh
b/tools/testing/selftests/net/forwarding/vxlan_bridge_1d.sh
index 3f9d50f1ef9e..fe42ef78711f 100755
--- a/tools/testing/selftests/net/forwarding/vxlan_bridge_1d.sh
+++ b/tools/testing/selftests/net/forwarding/vxlan_bridge_1d.sh
@@ -559,6 +559,21 @@ vxlan_encapped_ping_do()
local inner_tos=$1; shift
local outer_tos=$1; shift
+ local ipv4hdr=$(:
+ )"45:"$( : IP version + IHL
+ )"$inner_tos:"$( : IP TOS
+ )"00:54:"$( : IP total length
+ )"99:83:"$( : IP identification
+ )"40:00:"$( : IP flags + frag off
+ )"40:"$( : IP TTL
+ )"01:"$( : IP proto
+ )"CHECKSUM:"$( : IP header csum
+ )"c0:00:02:03:"$( : IP saddr: 192.0.2.3
+ )"c0:00:02:01:"$( : IP daddr: 192.0.2.1
^^^
Redundant ":" here.
+ )
+ local checksum=$(payload_template_calc_checksum "$ipv4hdr")
+ ipv4hdr=$(payload_template_expand_checksum "$ipv4hdr" $checksum)
+
$MZ $dev -c $count -d 100msec -q \
-b $next_hop_mac -B $dest_ip \
-t udp tos=$outer_tos,sp=23456,dp=$VXPORT,p=$(:
@@ -569,16 +584,7 @@ vxlan_encapped_ping_do()
)"$dest_mac:"$( : ETH daddr
)"$(mac_get w2):"$( : ETH saddr
)"08:00:"$( : ETH type
- )"45:"$( : IP version + IHL
- )"$inner_tos:"$( : IP TOS
- )"00:54:"$( : IP total length
- )"99:83:"$( : IP identification
- )"40:00:"$( : IP flags + frag off
- )"40:"$( : IP TTL
- )"01:"$( : IP proto
- )"00:00:"$( : IP header csum
- )"c0:00:02:03:"$( : IP saddr: 192.0.2.3
- )"c0:00:02:01:"$( : IP daddr: 192.0.2.1
+ )"$ipv4hdr:"$( : IPv4 header
Here should be 2 tabs + spaces like in all other lines nearby.
)"08:"$( : ICMP type
)"00:"$( : ICMP code
)"8b:f2:"$( : ICMP csum
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