Commit fd64d5a2 authored by Petr Machata's avatar Petr Machata Committed by David S. Miller
Browse files

selftests: forwarding: Add a skeleton of vxlan_bridge_1d 



This skeleton sets up a topology with three VXLAN endpoints: one
"local", possibly offloaded, and two "remote", formed using veth pairs
and likely purely software bridges. The "local" endpoint is connected to
host systems by a VLAN-unaware bridge.

Since VXLAN tunnels must be unique per namespace, each of the "remote"
endpoints is in its own namespace. H3 forms the bridge between the three
domains.

Signed-off-by: default avatarPetr Machata <petrm@mellanox.com>
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d1038cd0

tools/testing/selftests/net/forwarding/vxlan_bridge_1d.sh

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+296 −0
Original line number Diff line number Diff line 
#!/bin/bash

# SPDX-License-Identifier: GPL-2.0



# +--------------------+                               +----------------------+

# | H1 (vrf)           |                               |             H2 (vrf) |

# |    + $h1           |                               |  + $h2               |

# |    | 192.0.2.1/28  |                               |  | 192.0.2.2/28      |

# +----|---------------+                               +--|-------------------+

#      |                                                  |

# +----|--------------------------------------------------|-------------------+

# | SW |                                                  |                   |

# | +--|--------------------------------------------------|-----------------+ |

# | |  + $swp1                   BR1 (802.1d)             + $swp2           | |

# | |                                                                       | |

# | |  + vx1 (vxlan)                                                        | |

# | |    local 192.0.2.17                                                   | |

# | |    remote 192.0.2.34 192.0.2.50                                       | |

# | |    id 1000 dstport $VXPORT                                            | |

# | +-----------------------------------------------------------------------+ |

# |                                                                           |

# |  192.0.2.32/28 via 192.0.2.18                                             |

# |  192.0.2.48/28 via 192.0.2.18                                             |

# |                                                                           |

# |    + $rp1                                                                 |

# |    | 192.0.2.17/28                                                        |

# +----|----------------------------------------------------------------------+

#      |

# +----|--------------------------------------------------------+

# |    |                                             VRP2 (vrf) |

# |    + $rp2                                                   |

# |      192.0.2.18/28                                          |

# |                                                             |   (maybe) HW

# =============================================================================

# |                                                             |  (likely) SW

# |    + v1 (veth)                             + v3 (veth)      |

# |    | 192.0.2.33/28                         | 192.0.2.49/28  |

# +----|---------------------------------------|----------------+

#      |                                       |

# +----|------------------------------+   +----|------------------------------+

# |    + v2 (veth)        NS1 (netns) |   |    + v4 (veth)        NS2 (netns) |

# |      192.0.2.34/28                |   |      192.0.2.50/28                |

# |                                   |   |                                   |

# |   192.0.2.16/28 via 192.0.2.33    |   |   192.0.2.16/28 via 192.0.2.49    |

# |   192.0.2.50/32 via 192.0.2.33    |   |   192.0.2.34/32 via 192.0.2.49    |

# |                                   |   |                                   |

# | +-------------------------------+ |   | +-------------------------------+ |

# | |                  BR2 (802.1d) | |   | |                  BR2 (802.1d) | |

# | |  + vx2 (vxlan)                | |   | |  + vx2 (vxlan)                | |

# | |    local 192.0.2.34           | |   | |    local 192.0.2.50           | |

# | |    remote 192.0.2.17          | |   | |    remote 192.0.2.17          | |

# | |    remote 192.0.2.50          | |   | |    remote 192.0.2.34          | |

# | |    id 1000 dstport $VXPORT    | |   | |    id 1000 dstport $VXPORT    | |

# | |                               | |   | |                               | |

# | |  + w1 (veth)                  | |   | |  + w1 (veth)                  | |

# | +--|----------------------------+ |   | +--|----------------------------+ |

# |    |                              |   |    |                              |

# | +--|----------------------------+ |   | +--|----------------------------+ |

# | |  |                  VW2 (vrf) | |   | |  |                  VW2 (vrf) | |

# | |  + w2 (veth)                  | |   | |  + w2 (veth)                  | |

# | |    192.0.2.3/28               | |   | |    192.0.2.4/28               | |

# | +-------------------------------+ |   | +-------------------------------+ |

# +-----------------------------------+   +-----------------------------------+



: ${VXPORT:=4789}

export VXPORT



: ${ALL_TESTS:="

    "}



NUM_NETIFS=6

source lib.sh



h1_create()

{

	simple_if_init $h1 192.0.2.1/28

	tc qdisc add dev $h1 clsact

}



h1_destroy()

{

	tc qdisc del dev $h1 clsact

	simple_if_fini $h1 192.0.2.1/28

}



h2_create()

{

	simple_if_init $h2 192.0.2.2/28

	tc qdisc add dev $h2 clsact

}



h2_destroy()

{

	tc qdisc del dev $h2 clsact

	simple_if_fini $h2 192.0.2.2/28

}



rp1_set_addr()

{

	ip address add dev $rp1 192.0.2.17/28



	ip route add 192.0.2.32/28 nexthop via 192.0.2.18

	ip route add 192.0.2.48/28 nexthop via 192.0.2.18

}



rp1_unset_addr()

{

	ip route del 192.0.2.48/28 nexthop via 192.0.2.18

	ip route del 192.0.2.32/28 nexthop via 192.0.2.18



	ip address del dev $rp1 192.0.2.17/28

}



switch_create()

{

	ip link add name br1 type bridge vlan_filtering 0 mcast_snooping 0

	# Make sure the bridge uses the MAC address of the local port and not

	# that of the VxLAN's device.

	ip link set dev br1 address $(mac_get $swp1)

	ip link set dev br1 up



	ip link set dev $rp1 up

	rp1_set_addr



	ip link add name vx1 type vxlan id 1000		\

		local 192.0.2.17 dstport "$VXPORT"	\

		nolearning noudpcsum tos inherit ttl 100

	ip link set dev vx1 up



	ip link set dev vx1 master br1

	ip link set dev $swp1 master br1

	ip link set dev $swp1 up



	ip link set dev $swp2 master br1

	ip link set dev $swp2 up



	bridge fdb append dev vx1 00:00:00:00:00:00 dst 192.0.2.34 self

	bridge fdb append dev vx1 00:00:00:00:00:00 dst 192.0.2.50 self

}



switch_destroy()

{

	rp1_unset_addr

	ip link set dev $rp1 down



	bridge fdb del dev vx1 00:00:00:00:00:00 dst 192.0.2.50 self

	bridge fdb del dev vx1 00:00:00:00:00:00 dst 192.0.2.34 self



	ip link set dev vx1 nomaster

	ip link set dev vx1 down

	ip link del dev vx1



	ip link set dev $swp2 down

	ip link set dev $swp2 nomaster



	ip link set dev $swp1 down

	ip link set dev $swp1 nomaster



	ip link set dev br1 down

	ip link del dev br1

}



vrp2_create()

{

	simple_if_init $rp2 192.0.2.18/28

	__simple_if_init v1 v$rp2 192.0.2.33/28

	__simple_if_init v3 v$rp2 192.0.2.49/28

	tc qdisc add dev v1 clsact

}



vrp2_destroy()

{

	tc qdisc del dev v1 clsact

	__simple_if_fini v3 192.0.2.49/28

	__simple_if_fini v1 192.0.2.33/28

	simple_if_fini $rp2 192.0.2.18/28

}



ns_init_common()

{

	local in_if=$1; shift

	local in_addr=$1; shift

	local other_in_addr=$1; shift

	local nh_addr=$1; shift

	local host_addr=$1; shift



	ip link set dev $in_if up

	ip address add dev $in_if $in_addr/28

	tc qdisc add dev $in_if clsact



	ip link add name br2 type bridge vlan_filtering 0

	ip link set dev br2 up



	ip link add name w1 type veth peer name w2



	ip link set dev w1 master br2

	ip link set dev w1 up



	ip link add name vx2 type vxlan id 1000 local $in_addr dstport "$VXPORT"

	ip link set dev vx2 up

	bridge fdb append dev vx2 00:00:00:00:00:00 dst 192.0.2.17 self

	bridge fdb append dev vx2 00:00:00:00:00:00 dst $other_in_addr self



	ip link set dev vx2 master br2

	tc qdisc add dev vx2 clsact



	simple_if_init w2 $host_addr/28



	ip route add 192.0.2.16/28 nexthop via $nh_addr

	ip route add $other_in_addr/32 nexthop via $nh_addr

}

export -f ns_init_common



ns1_create()

{

	ip netns add ns1

	ip link set dev v2 netns ns1

	in_ns ns1 \

	      ns_init_common v2 192.0.2.34 192.0.2.50 192.0.2.33 192.0.2.3

}



ns1_destroy()

{

	ip netns exec ns1 ip link set dev v2 netns 1

	ip netns del ns1

}



ns2_create()

{

	ip netns add ns2

	ip link set dev v4 netns ns2

	in_ns ns2 \

	      ns_init_common v4 192.0.2.50 192.0.2.34 192.0.2.49 192.0.2.4

}



ns2_destroy()

{

	ip netns exec ns2 ip link set dev v4 netns 1

	ip netns del ns2

}



setup_prepare()

{

	h1=${NETIFS[p1]}

	swp1=${NETIFS[p2]}



	swp2=${NETIFS[p3]}

	h2=${NETIFS[p4]}



	rp1=${NETIFS[p5]}

	rp2=${NETIFS[p6]}



	vrf_prepare

	forwarding_enable



	h1_create

	h2_create

	switch_create



	ip link add name v1 type veth peer name v2

	ip link add name v3 type veth peer name v4

	vrp2_create

	ns1_create

	ns2_create

}



cleanup()

{

	pre_cleanup



	ns2_destroy

	ns1_destroy

	vrp2_destroy

	ip link del dev v3

	ip link del dev v1



	switch_destroy

	h2_destroy

	h1_destroy



	forwarding_restore

	vrf_cleanup

}



test_all()

{

	echo "Running tests with UDP port $VXPORT"

	tests_run

}



trap cleanup EXIT



setup_prepare

setup_wait

test_all



exit $EXIT_STATUS

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