# Establish N PFCP sessions for tunmap, and emit massive GTP traffic to the UPF
# to each established tunnel.
#
# osmo-upf-load-gen              UPF                          "core"
#  |GTP-ep -------GTP-----> GTP-ep|GTP-ep ----------IP------> GTP-ep
#  |10.0.1.1              10.0.2.1|10.0.3.1                   10.0.3.2
#  |10.0.1.2
#                          ^        ^                         ^
#    ^                     |        |                         |
#    |                     |        /                         configure by
#   configure by        from UPF                              'gtp core'
#   'gtp ip'            ("F-TEID=choose")

# Configure CPU related settings:
cpu-sched
 !policy rr 18
 ! All Rx in hyperthreads within same cores:
 ! core-id=0, processor=0:
 cpu-affinity GtpFloodTx0 0x0001 delay
 ! core-id=0, processor=6:
 cpu-affinity GtpFloodTx1 0x0040 delay
 ! core-id=1, processor=1:
 cpu-affinity GtpFloodTx2 0x0002 delay
 ! core-id=1, processor=7:
 cpu-affinity GtpFloodTx3 0x0080 delay
 ! core-id=2, processor=2:
 cpu-affinity GtpFloodTx4 0x0004 delay
 ! core-id=2, processor=8: SPARE
 !cpu-affinity GtpFloodTx5 0x0100 delay
 ! core-id=3, processor=3:
 cpu-affinity GtpFloodRx0 0x0008 delay
 ! core-id=3, processor=9:
 cpu-affinity GtpFloodRx1 0x0200 delay
 ! core-id=4, processor=4:
 cpu-affinity GtpFloodRx2 0x0010 delay
 ! core-id=4, processor=10:
 cpu-affinity GtpFloodRx3 0x0400 delay
 ! core-id=5, processor=5:
 cpu-affinity GtpFloodRx4 0x0020 delay
 ! core-id=2, processor=11: SPARE
 !cpu-affinity GtpFloodRx5 0x0800 delay

# Configure one or more local GTP endpoints to emit GTP packets from.
# Established sessions will use these round-robin.
# These need to be local IP addresses for 'gtp flood' to work.
gtp local 172.16.31.100
gtp local 172.16.31.101
gtp local 172.16.31.102
gtp local 172.16.31.103
gtp local 172.16.31.104
gtp local 172.16.31.105
gtp local 172.16.31.106
gtp local 172.16.31.107
gtp local 172.16.31.108
gtp local 172.16.31.109
gtp local 172.16.31.110
gtp local 172.16.31.111
gtp local 172.16.31.112
gtp local 172.16.31.113
gtp local 172.16.31.114
gtp local 172.16.31.115
gtp local 172.16.31.116
gtp local 172.16.31.117
gtp local 172.16.31.118
gtp local 172.16.31.119
gtp local 172.16.31.120
gtp local 172.16.31.121
gtp local 172.16.31.122
gtp local 172.16.31.123
gtp local 172.16.31.124
gtp local 172.16.31.125
gtp local 172.16.31.126
gtp local 172.16.31.127
gtp local 172.16.31.128
gtp local 172.16.31.129
gtp local 172.16.31.130
gtp local 172.16.31.131
gtp local 172.16.31.132
gtp local 172.16.31.133
gtp local 172.16.31.134
gtp local 172.16.31.135
gtp local 172.16.31.136
gtp local 172.16.31.137
gtp local 172.16.31.138
gtp local 172.16.31.139
gtp local 172.16.31.140
gtp local 172.16.31.141
gtp local 172.16.31.142
gtp local 172.16.31.143
gtp local 172.16.31.144
gtp local 172.16.31.145
gtp local 172.16.31.146
gtp local 172.16.31.147
gtp local 172.16.31.148
gtp local 172.16.31.149
gtp local 172.16.31.150

gtp core 172.16.32.200
gtp core 172.16.32.201
gtp core 172.16.32.202
gtp core 172.16.32.203
gtp core 172.16.32.204
gtp core 172.16.32.205
gtp core 172.16.32.206
gtp core 172.16.32.207
gtp core 172.16.32.208
gtp core 172.16.32.209
gtp core 172.16.32.210
gtp core 172.16.32.211
gtp core 172.16.32.212
gtp core 172.16.32.213
gtp core 172.16.32.214
gtp core 172.16.32.215
gtp core 172.16.32.216
gtp core 172.16.32.217
gtp core 172.16.32.218
gtp core 172.16.32.219
gtp core 172.16.32.220
gtp core 172.16.32.221
gtp core 172.16.32.222
gtp core 172.16.32.223

ue ip range 192.168.1.2 192.168.254.254

# now associate with UPF and start N sessions.
pfcp-peer 172.16.31.2
 tx assoc-setup-req
 sleep 1
 date

 n 50 session create tunmap
 wait responses
 # All sessions established
 date

# For each established PFCP session, emit GTP packets
gtp flood
 rx-workers 5
 tx-workers 5
 io-uring queue-size 4000
 flows-per-session 1
 packets-per-flow infinite

 # configure the generated GTP payload: include in the payload each tunnel's
 # GTP TEID needed to correctly echo the GTP payload back with
 # osmo-udp-responder.
 payload append-info

 #slew 10000

date
# All GTP is flowing.
# osmo-upf-load-gen will keep this up for as long as there still are active GTP flows,
# or until receiving a signal interrupt (ctrl-C).

# give some time to gather counters before the tunnel is removed
sleep 1