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selftests: forwarding: vxlan_bridge_1d: Add an ECN decap test 

Test that when decapsulating from VXLAN, the values of inner and outer
TOS are handled appropriately. Because VXLAN driver on its own won't
produce the arbitrary TOS combinations necessary to test this feature,
simply open-code a single ICMP packet and have mausezahn assemble it.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata 2018-11-19 16:11:24 +00:00 committed by David S. Miller
parent 1e5abfb3ff
commit a0b61f3d8e
1 changed files with 116 additions and 0 deletions
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116
tools/testing/selftests/net/forwarding/vxlan_bridge_1d.sh
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@ -71,6 +71,7 @@ export VXPORT
test_ttl
test_tos
test_ecn_encap
test_ecn_decap
reapply_config
ping_ipv4
test_flood
@ -547,6 +548,121 @@ test_ecn_encap()
__test_ecn_encap 0x03 0x02
}
vxlan_encapped_ping_do()
{
local count=$1; shift
local dev=$1; shift
local next_hop_mac=$1; shift
local dest_ip=$1; shift
local dest_mac=$1; shift
local inner_tos=$1; shift
local outer_tos=$1; shift
$MZ $dev -c $count -d 100msec -q \
-b $next_hop_mac -B $dest_ip \
-t udp tos=$outer_tos,sp=23456,dp=$VXPORT,p=$(:
)"08:"$( : VXLAN flags
)"00:00:00:"$( : VXLAN reserved
)"00:03:e8:"$( : VXLAN VNI
)"00:"$( : VXLAN reserved
)"$dest_mac:"$( : 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
)"08:"$( : ICMP type
)"00:"$( : ICMP code
)"8b:f2:"$( : ICMP csum
)"1f:6a:"$( : ICMP request identifier
)"00:01:"$( : ICMP request sequence number
)"4f:ff:c5:5b:00:00:00:00:"$( : ICMP payload
)"6d:74:0b:00:00:00:00:00:"$( :
)"10:11:12:13:14:15:16:17:"$( :
)"18:19:1a:1b:1c:1d:1e:1f:"$( :
)"20:21:22:23:24:25:26:27:"$( :
)"28:29:2a:2b:2c:2d:2e:2f:"$( :
)"30:31:32:33:34:35:36:37"
}
export -f vxlan_encapped_ping_do
vxlan_encapped_ping_test()
{
local ping_dev=$1; shift
local nh_dev=$1; shift
local ping_dip=$1; shift
local inner_tos=$1; shift
local outer_tos=$1; shift
local stat_get=$1; shift
local expect=$1; shift
local t0=$($stat_get)
in_ns ns1 \
vxlan_encapped_ping_do 10 $ping_dev $(mac_get $nh_dev) \
$ping_dip $(mac_get $h1) \
$inner_tos $outer_tos
local t1=$($stat_get)
local delta=$((t1 - t0))
# Tolerate a couple stray extra packets.
((expect <= delta && delta <= expect + 2))
check_err $? "Expected to capture $expect packets, got $delta."
}
export -f vxlan_encapped_ping_test
__test_ecn_decap()
{
local orig_inner_tos=$1; shift
local orig_outer_tos=$1; shift
local decapped_tos=$1; shift
RET=0
tc filter add dev $h1 ingress pref 77 prot ip \
flower ip_tos $decapped_tos action pass
sleep 1
vxlan_encapped_ping_test v2 v1 192.0.2.17 \
$orig_inner_tos $orig_outer_tos \
"tc_rule_stats_get $h1 77 ingress" 10
tc filter del dev $h1 ingress pref 77
log_test "VXLAN: ECN decap: $orig_outer_tos/$orig_inner_tos->$decapped_tos"
}
test_ecn_decap_error()
{
local orig_inner_tos=00
local orig_outer_tos=03
RET=0
vxlan_encapped_ping_test v2 v1 192.0.2.17 \
$orig_inner_tos $orig_outer_tos \
"link_stats_rx_errors_get vx1" 10
log_test "VXLAN: ECN decap: $orig_outer_tos/$orig_inner_tos->error"
}
test_ecn_decap()
{
# In accordance with INET_ECN_decapsulate()
__test_ecn_decap 00 00 0x00
__test_ecn_decap 01 01 0x01
__test_ecn_decap 02 01 0x02
__test_ecn_decap 01 03 0x03
__test_ecn_decap 02 03 0x03
test_ecn_decap_error
}
test_all()
{
echo "Running tests with UDP port $VXPORT"