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authorNathan Skrzypczak <nathan.skrzypczak@gmail.com>2021-10-12 14:00:25 +0200
committerDave Wallace <dwallacelf@gmail.com>2021-10-13 15:30:03 +0000
commit8acc5ee9079d0b03229a72e72a5308e7de0a359a (patch)
treeba3e5789abc2c3cd4edd9806fc44991c45d705f1 /extras/libmemif/examples/example_setup_doc.md
parent87e90830b8931b4c55526bf7cb5a148a10df061f (diff)
libmemif: docs md->rst
Type: improvement Change-Id: Ibebd2d47a4268189f11601d004073e4858548f25 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
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-## Example setup {#libmemif_example_setup_doc}
-
-#### VPP-memif master icmp_responder slave
-
-> Libmemif example app(s) use memif default socket file: `/run/vpp/memif.sock`.
-
-Run VPP and icmpr-epoll example (default example when running in container).
-
-> Other examples work similar to icmpr-epoll. Brief explanation can be found in @ref libmemif_examples_doc .
-
-VPP-side config:
-```
-DBGvpp# create interface memif id 0 master
-DBGvpp# set int state memif0/0 up
-DBGvpp# set int ip address memif0/0 192.168.1.1/24
-```
-icmpr-epoll:
-```
-conn 0 0
-```
-Memif in slave mode will try to connect every 2 seconds. If connection establishment is successful, a message will show.
-```
-INFO: memif connected!
-```
-> Error messages like "unmatched interface id" are printed only in debug mode.
-
-Check connected status.
-Use show command in icmpr-epoll:
-```
-show
-MEMIF DETAILS
-==============================
-interface index: 0
- interface ip: 192.168.1.2
- interface name: memif_connection
- app name: ICMP_Responder
- remote interface name: memif0/0
- remote app name: VPP 17.10-rc0~132-g62f9cdd
- id: 0
- secret:
- role: slave
- mode: ethernet
- socket filename: /run/vpp/memif.sock
- rx queues:
- queue id: 0
- ring size: 1024
- buffer size: 2048
- tx queues:
- queue id: 0
- ring size: 1024
- buffer size: 2048
- link: up
-interface index: 1
- no connection
-
-```
-Use sh memif command in VPP:
-```
-DBGvpp# sh memif
-interface memif0/0
- remote-name "ICMP_Responder"
- remote-interface "memif_connection"
- id 0 mode ethernet file /run/vpp/memif.sock
- flags admin-up connected
- listener-fd 12 conn-fd 13
- num-s2m-rings 1 num-m2s-rings 1 buffer-size 0
- master-to-slave ring 0:
- region 0 offset 32896 ring-size 1024 int-fd 16
- head 0 tail 0 flags 0x0000 interrupts 0
- master-to-slave ring 0:
- region 0 offset 0 ring-size 1024 int-fd 15
- head 0 tail 0 flags 0x0001 interrupts 0
-```
-
-Send ping from VPP to icmpr-epoll:
-```
-DBGvpp# ping 192.168.1.2
-64 bytes from 192.168.1.2: icmp_seq=2 ttl=64 time=.1888 ms
-64 bytes from 192.168.1.2: icmp_seq=3 ttl=64 time=.1985 ms
-64 bytes from 192.168.1.2: icmp_seq=4 ttl=64 time=.1813 ms
-64 bytes from 192.168.1.2: icmp_seq=5 ttl=64 time=.1929 ms
-
-Statistics: 5 sent, 4 received, 20% packet loss
-```
-#### multiple queues VPP-memif slave icmp_responder master
-
-Run icmpr-epoll as in previous example setup.
-Run VPP with startup conf, enabling 2 worker threads.
-Example startup.conf:
-```
-unix {
- interactive
- nodaemon
- full-coredump
-}
-
-cpu {
- workers 2
-}
-```
-VPP-side config:
-```
-DBGvpp# create memif id 0 slave rx-queues 2 tx-queues 2
-DBGvpp# set int state memif0/0 up
-DBGvpp# set int ip address memif0/0 192.168.1.1/24
-```
-icmpr-epoll:
-```
-conn 0 1
-```
-When connection is established a message will print:
-```
-INFO: memif connected!
-```
-> Error messages like "unmatched interface id" are printed only in debug mode.
-
-Check connected status.
-Use show command in icmpr-epoll:
-```
-show
-MEMIF DETAILS
-==============================
-interface index: 0
- interface ip: 192.168.1.2
- interface name: memif_connection
- app name: ICMP_Responder
- remote interface name: memif0/0
- remote app name: VPP 17.10-rc0~132-g62f9cdd
- id: 0
- secret:
- role: master
- mode: ethernet
- socket filename: /run/vpp/memif.sock
- rx queues:
- queue id: 0
- ring size: 1024
- buffer size: 2048
- queue id: 1
- ring size: 1024
- buffer size: 2048
- tx queues:
- queue id: 0
- ring size: 1024
- buffer size: 2048
- queue id: 1
- ring size: 1024
- buffer size: 2048
- link: up
-interface index: 1
- no connection
-
-```
-Use sh memif command in VPP:
-```
-DBGvpp# sh memif
-interface memif0/0
- remote-name "ICMP_Responder"
- remote-interface "memif_connection"
- id 0 mode ethernet file /run/vpp/memif.sock
- flags admin-up slave connected
- listener-fd -1 conn-fd 12
- num-s2m-rings 2 num-m2s-rings 2 buffer-size 2048
- slave-to-master ring 0:
- region 0 offset 0 ring-size 1024 int-fd 14
- head 0 tail 0 flags 0x0000 interrupts 0
- slave-to-master ring 1:
- region 0 offset 32896 ring-size 1024 int-fd 15
- head 0 tail 0 flags 0x0000 interrupts 0
- slave-to-master ring 0:
- region 0 offset 65792 ring-size 1024 int-fd 16
- head 0 tail 0 flags 0x0001 interrupts 0
- slave-to-master ring 1:
- region 0 offset 98688 ring-size 1024 int-fd 17
- head 0 tail 0 flags 0x0001 interrupts 0
-
-```
-Send ping from VPP to icmpr-epoll:
-```
-DBGvpp# ping 192.168.1.2
-64 bytes from 192.168.1.2: icmp_seq=2 ttl=64 time=.1439 ms
-64 bytes from 192.168.1.2: icmp_seq=3 ttl=64 time=.2184 ms
-64 bytes from 192.168.1.2: icmp_seq=4 ttl=64 time=.1458 ms
-64 bytes from 192.168.1.2: icmp_seq=5 ttl=64 time=.1687 ms
-
-Statistics: 5 sent, 4 received, 20% packet loss
-```
-
-#### icmp_responder master icmp_responder slave
-
-> This setup creates connection between two applications using libmemif. Traffic functionality is the same as when connection to VPP. App can receive ARP/ICMP request and transmit response.
-
-Run two instances of icmpr-epoll example.
-> If not running in container, make sure folder /run/vpp/ exists before creating memif master.
-Instance 1 will be in master mode, instance 2 in slave mode.
-instance 1:
-```
-conn 0 1
-```
-instance 2:
-```
-conn 0 0
-```
-In 2 seconds, both instances should print connected! message:
-```
-INFO: memif connected!
-```
-Check peer interface names using show command.