# _ADD_BR([name])
#
# Expands into the proper ovs-vsctl commands to create a bridge with the
# appropriate type and properties
m4_define([_ADD_BR], [[add-br $1 -- set Bridge $1 datapath_type="netdev" protocols=OpenFlow10,OpenFlow11,OpenFlow12,OpenFlow13,OpenFlow14,OpenFlow15 fail-mode=secure ]])

# OVS_TRAFFIC_VSWITCHD_START([vsctl-args], [vsctl-output], [=override])
#
# Creates a database and starts ovsdb-server, starts ovs-vswitchd
# connected to that database, calls ovs-vsctl to create a bridge named
# br0 with predictable settings, passing 'vsctl-args' as additional
# commands to ovs-vsctl.  If 'vsctl-args' causes ovs-vsctl to provide
# output (e.g. because it includes "create" commands) then 'vsctl-output'
# specifies the expected output after filtering through uuidfilt.
m4_define([OVS_TRAFFIC_VSWITCHD_START],
  [
   OVS_WAIT_WHILE([ip link show ovs-netdev])
   _OVS_VSWITCHD_START([--disable-system])
   dnl Add bridges, ports, etc.
   OVS_WAIT_WHILE([ip link show br0])
   AT_CHECK([ovs-vsctl -- _ADD_BR([br0]) -- $1 m4_if([$2], [], [], [| uuidfilt])], [0], [$2])
])

# OVS_TRAFFIC_VSWITCHD_STOP([ALLOWLIST], [extra_cmds])
#
# Gracefully stops ovs-vswitchd and ovsdb-server, checking their log files
# for messages with severity WARN or higher and signaling an error if any
# is present.  The optional ALLOWLIST may contain shell-quoted "sed"
# commands to delete any warnings that are actually expected, e.g.:
#
#   OVS_TRAFFIC_VSWITCHD_STOP(["/expected error/d"])
#
# 'extra_cmds' are shell commands to be executed after OVS_VSWITCHD_STOP() is
# invoked. They can be used to perform additional cleanups such as name space
# removal.
m4_define([OVS_TRAFFIC_VSWITCHD_STOP],
  [OVS_VSWITCHD_STOP([dnl
$1";/netdev_linux.*obtaining netdev stats via vport failed/d
/dpif_netlink.*Generic Netlink family 'ovs_datapath' does not exist. The Open vSwitch kernel module is probably not loaded./d
/dpif_netdev(revalidator.*)|ERR|internal error parsing flow key.*proto=2.*/d
/dpif(revalidator.*)|WARN|netdev@ovs-netdev: failed to.*proto=2.*/d"])
   AT_CHECK([:; $2])
  ])

# CONFIGURE_VETH_OFFLOADS([VETH])
#
# Disable TX offloads for veths.  The userspace datapath uses the AF_PACKET
# socket to receive packets for veths.  Unfortunately, the AF_PACKET socket
# doesn't play well with offloads:
# 1. GSO packets are received without segmentation and therefore discarded.
# 2. Packets with offloaded partial checksum are received with the wrong
#    checksum, therefore discarded by the receiver.
#
# By disabling tx offloads in the non-OVS side of the veth peer we make sure
# that the AF_PACKET socket will not receive bad packets.
#
# This is a workaround, and should be removed when offloads are properly
# supported in netdev-linux.
m4_define([CONFIGURE_VETH_OFFLOADS],
    [AT_CHECK([ethtool -K $1 tx off], [0], [ignore], [ignore])]
)

# CHECK_CONNTRACK()
#
# Perform requirements checks for running conntrack tests.
#
m4_define([CHECK_CONNTRACK], [])

# CHECK_CONNTRACK_ALG()
#
# Perform requirements checks for running conntrack ALG tests. The userspace
# supports FTP and TFTP.
#
m4_define([CHECK_CONNTRACK_ALG])

# CHECK_CONNTRACK_LOCAL_STACK()
#
# Perform requirements checks for running conntrack tests with local stack.
# While the kernel connection tracker automatically passes all the connection
# tracking state from an internal port to the OpenvSwitch kernel module, there
# is simply no way of doing that with the userspace, so skip the tests.
m4_define([CHECK_CONNTRACK_LOCAL_STACK],
[
    AT_SKIP_IF([:])
])

# CHECK_CONNTRACK_FRAG_OVERLAP()
#
# The userspace datapath supports fragment overlap check.
m4_define([CHECK_CONNTRACK_FRAG_OVERLAP])

# CHECK_CONNTRACK_NAT()
#
# Perform requirements checks for running conntrack NAT tests. The userspace
# datapath supports NAT.
#
m4_define([CHECK_CONNTRACK_NAT])

# CHECK_CONNTRACK_ZEROIP_SNAT()
#
# Perform requirements checks for running conntrack all-zero IP SNAT tests.
# The userspace datapath always supports all-zero IP SNAT, so no check is
# needed.
#
m4_define([CHECK_CONNTRACK_ZEROIP_SNAT])

# CHECK_CONNTRACK_TIMEOUT()
#
# Perform requirements checks for running conntrack customized timeout tests.
#
m4_define([CHECK_CONNTRACK_TIMEOUT])

# CHECK_CT_DPIF_SET_GET_MAXCONNS()
#
# Perform requirements checks for running ovs-dpctl ct-set-maxconns or
# ovs-dpctl ct-get-maxconns. The userspace datapath does support this feature.
m4_define([CHECK_CT_DPIF_SET_GET_MAXCONNS])

# CHECK_CT_DPIF_GET_NCONNS()
#
# Perform requirements checks for running ovs-dpctl ct-get-nconns. The
# userspace datapath does support this feature.
m4_define([CHECK_CT_DPIF_GET_NCONNS])

# DPCTL_SET_MIN_FRAG_SIZE()
#
# The userspace datapath supports this command.
m4_define([DPCTL_SET_MIN_FRAG_SIZE],
[
AT_CHECK([ovs-appctl dpctl/ipf-set-min-frag v4 400], [], [dnl
setting minimum fragment size successful
])
AT_CHECK([ovs-appctl dpctl/ipf-set-min-frag v6 400], [], [dnl
setting minimum fragment size successful
])
])

# DPCTL_MODIFY_FRAGMENTATION()
#
# The userspace datapath supports this command.
m4_define([DPCTL_MODIFY_FRAGMENTATION],
[
AT_CHECK([ovs-appctl dpctl/ipf-set-min-frag v4 1000], [], [dnl
setting minimum fragment size successful
])
AT_CHECK([ovs-appctl dpctl/ipf-set-max-nfrags 500], [], [dnl
setting maximum fragments successful
])
AT_CHECK([ovs-appctl dpctl/ipf-get-status], [], [dnl
        Fragmentation Module Status
        ---------------------------
        v4 enabled: 1
        v6 enabled: 1
        max num frags (v4/v6): 500
        num frag: 0
        min v4 frag size: 1000
        v4 frags accepted: 0
        v4 frags completed: 0
        v4 frags expired: 0
        v4 frags too small: 0
        v4 frags overlapped: 0
        v4 frags purged: 0
        min v6 frag size: 1280
        v6 frags accepted: 0
        v6 frags completed: 0
        v6 frags expired: 0
        v6 frags too small: 0
        v6 frags overlapped: 0
        v6 frags purged: 0
])
])

# DPCTL_CHECK_FRAGMENTATION_PASS()
#
# Used to check fragmentation counters for some fragmentation tests using
# the userspace datapath.
m4_define([DPCTL_CHECK_FRAGMENTATION_PASS],
[
AT_CHECK([ovs-appctl dpctl/ipf-get-status --more], [], [dnl
        Fragmentation Module Status
        ---------------------------
        v4 enabled: 1
        v6 enabled: 1
        max num frags (v4/v6): 500
        num frag: 0
        min v4 frag size: 1000
        v4 frags accepted: 30
        v4 frags completed: 30
        v4 frags expired: 0
        v4 frags too small: 0
        v4 frags overlapped: 0
        v4 frags purged: 0
        min v6 frag size: 1280
        v6 frags accepted: 0
        v6 frags completed: 0
        v6 frags expired: 0
        v6 frags too small: 0
        v6 frags overlapped: 0
        v6 frags purged: 0

        Fragment Lists:

])
])

# DPCTL_CHECK_V6_FRAGMENTATION_PASS()
#
# Used to check fragmentation counters for some fragmentation tests using
# the userspace datapath.
m4_define([DPCTL_CHECK_V6_FRAGMENTATION_PASS],
[
AT_CHECK([ovs-appctl dpctl/ipf-get-status --more], [], [dnl
        Fragmentation Module Status
        ---------------------------
        v4 enabled: 1
        v6 enabled: 1
        max num frags (v4/v6): 1000
        num frag: 0
        min v4 frag size: 1200
        v4 frags accepted: 0
        v4 frags completed: 0
        v4 frags expired: 0
        v4 frags too small: 0
        v4 frags overlapped: 0
        v4 frags purged: 0
        min v6 frag size: 1280
        v6 frags accepted: 30
        v6 frags completed: 30
        v6 frags expired: 0
        v6 frags too small: 0
        v6 frags overlapped: 0
        v6 frags purged: 0

        Fragment Lists:

])
])

# FORMAT_FRAG_LIST([])
#
# Strip content from the piped input which can differ from test to test; recirc_id
# and ip_id fields in an ipf_list vary from test to test and hence are cleared.
m4_define([FORMAT_FRAG_LIST],
    [[sed -e 's/ip_id=[0-9]*/ip_id=<cleared>/g' -e 's/recirc_id=[0-9]*/recirc_id=<cleared>/g']])

# DPCTL_CHECK_FRAGMENTATION_FAIL()
#
# Used to check fragmentation counters for some fragmentation tests using
# the userspace datapath, when failure to transmit fragments is expected.
m4_define([DPCTL_CHECK_FRAGMENTATION_FAIL],
[
AT_CHECK([ovs-appctl dpctl/ipf-get-status -m | FORMAT_FRAG_LIST()], [], [dnl
        Fragmentation Module Status
        ---------------------------
        v4 enabled: 1
        v6 enabled: 1
        max num frags (v4/v6): 500
        num frag: 7
        min v4 frag size: 1000
        v4 frags accepted: 7
        v4 frags completed: 0
        v4 frags expired: 0
        v4 frags too small: 0
        v4 frags overlapped: 0
        v4 frags purged: 0
        min v6 frag size: 1280
        v6 frags accepted: 0
        v6 frags completed: 0
        v6 frags expired: 0
        v6 frags too small: 0
        v6 frags overlapped: 0
        v6 frags purged: 0

        Fragment Lists:

(src=10.1.1.1,dst=10.1.1.2,recirc_id=<cleared>,ip_id=<cleared>,dl_type=0x800,zone=9,nw_proto=1,num_fragments=1,state=first frag)
(src=10.1.1.1,dst=10.1.1.2,recirc_id=<cleared>,ip_id=<cleared>,dl_type=0x800,zone=9,nw_proto=1,num_fragments=1,state=first frag)
(src=10.1.1.1,dst=10.1.1.2,recirc_id=<cleared>,ip_id=<cleared>,dl_type=0x800,zone=9,nw_proto=1,num_fragments=1,state=first frag)
(src=10.1.1.1,dst=10.1.1.2,recirc_id=<cleared>,ip_id=<cleared>,dl_type=0x800,zone=9,nw_proto=1,num_fragments=1,state=first frag)
(src=10.1.1.1,dst=10.1.1.2,recirc_id=<cleared>,ip_id=<cleared>,dl_type=0x800,zone=9,nw_proto=1,num_fragments=1,state=first frag)
(src=10.1.1.1,dst=10.1.1.2,recirc_id=<cleared>,ip_id=<cleared>,dl_type=0x800,zone=9,nw_proto=1,num_fragments=1,state=first frag)
(src=10.1.1.1,dst=10.1.1.2,recirc_id=<cleared>,ip_id=<cleared>,dl_type=0x800,zone=9,nw_proto=1,num_fragments=1,state=first frag)
])
])

# OVS_CHECK_MIN_KERNEL([minversion], [maxversion])
#
# The userspace skips all tests that check kernel version.
m4_define([OVS_CHECK_MIN_KERNEL],
[
    AT_SKIP_IF([:])
])

# OVS_CHECK_KERNEL_EXCL([minversion], [maxversion], [minsublevel], [maxsublevel])
#
# The userspace skips all tests that check kernel version.
m4_define([OVS_CHECK_KERNEL_EXCL],
[
    AT_SKIP_IF([:])
])

# CHECK_LATER_IPV6_FRAGMENTS()
#
# Userspace is parsing later IPv6 fragments correctly.
m4_define([CHECK_LATER_IPV6_FRAGMENTS], [])

# VSCTL_ADD_DATAPATH_TABLE()
#
# Create datapath table "netdev" for userspace tests in ovsdb
m4_define([VSCTL_ADD_DATAPATH_TABLE],
[
    AT_CHECK([ovs-vsctl -- --id=@m create Datapath datapath_version=0 -- set Open_vSwitch . datapaths:"netdev"=@m], [0], [stdout])
    DP_TYPE=$(echo "netdev")
])


# CHECK_L3L4_CONNTRACK_REASM()
#
# Only allow this test to run on the kernel datapath - it is not useful
# or necessary for the userspace datapath as it is checking for a kernel
# specific regression.
m4_define([CHECK_L3L4_CONNTRACK_REASM],
[
    AT_SKIP_IF([:])
])

# OVS_CHECK_BAREUDP()
#
# The userspace datapath does not support bareudp tunnels.
m4_define([OVS_CHECK_BAREUDP],
[
    AT_SKIP_IF([:])
])
