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authorNathan Skrzypczak <nathan.skrzypczak@gmail.com>2021-10-08 14:05:58 +0200
committerDave Wallace <dwallacelf@gmail.com>2021-10-13 15:32:22 +0000
commita2c9509a4ab22380937a2b613fcc518da22f5166 (patch)
tree93e0629de82c99ca4b1f9802083cf9362f1dc325 /src/examples/handoffdemo
parent8acc5ee9079d0b03229a72e72a5308e7de0a359a (diff)
docs: convert extras doc md->rst
Type: improvement Change-Id: Ie3b25a86b99098d2b3a21a11fc73234c8ed589d6 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
Diffstat (limited to 'src/examples/handoffdemo')
-rw-r--r--src/examples/handoffdemo/README.md186
-rw-r--r--src/examples/handoffdemo/handoffdemo.rst194
2 files changed, 194 insertions, 186 deletions
diff --git a/src/examples/handoffdemo/README.md b/src/examples/handoffdemo/README.md
deleted file mode 100644
index e38c7b3cca0..00000000000
--- a/src/examples/handoffdemo/README.md
+++ /dev/null
@@ -1,186 +0,0 @@
-# Handoff queue demo plugin {#handoff_queue_demo_plugin}
-
-This plugin provides a simplified example of how to hand off
-packets between threads. I used it to debug packet-tracer handoff
-tracing support.
-
-# Packet generator input script
-
-```
- packet-generator new {
- name x
- limit 5
- size 128-128
- interface local0
- node handoffdemo-1
- data {
- incrementing 30
- }
- }
-```
-# Start vpp with 2 worker threads
-
-The demo plugin hands packets from worker 1 to worker 2.
-
-# Enable tracing, and start the packet generator
-
-```
- trace add pg-input 100
- packet-generator enable
-```
-
-# Sample Run
-
-```
- DBGvpp# ex /tmp/pg_input_script
- DBGvpp# pa en
- DBGvpp# sh err
- Count Node Reason
- 5 handoffdemo-1 packets handed off processed
- 5 handoffdemo-2 completed packets
- DBGvpp# show run
- Thread 1 vpp_wk_0 (lcore 0)
- Time 133.9, average vectors/node 5.00, last 128 main loops 0.00 per node 0.00
- vector rates in 3.7331e-2, out 0.0000e0, drop 0.0000e0, punt 0.0000e0
- Name State Calls Vectors Suspends Clocks Vectors/Call
- handoffdemo-1 active 1 5 0 4.76e3 5.00
- pg-input disabled 2 5 0 5.58e4 2.50
- unix-epoll-input polling 22760 0 0 2.14e7 0.00
- ---------------
- Thread 2 vpp_wk_1 (lcore 2)
- Time 133.9, average vectors/node 5.00, last 128 main loops 0.00 per node 0.00
- vector rates in 0.0000e0, out 0.0000e0, drop 3.7331e-2, punt 0.0000e0
- Name State Calls Vectors Suspends Clocks Vectors/Call
- drop active 1 5 0 1.35e4 5.00
- error-drop active 1 5 0 2.52e4 5.00
- handoffdemo-2 active 1 5 0 2.56e4 5.00
- unix-epoll-input polling 22406 0 0 2.18e7 0.00
-```
-
-Enable the packet tracer and run it again...
-
-```
- DBGvpp# trace add pg-input 100
- DBGvpp# pa en
- DBGvpp# sh trace
- sh trace
- ------------------- Start of thread 0 vpp_main -------------------
- No packets in trace buffer
- ------------------- Start of thread 1 vpp_wk_0 -------------------
- Packet 1
-
- 00:06:50:520688: pg-input
- stream x, 128 bytes, 0 sw_if_index
- current data 0, length 128, buffer-pool 0, ref-count 1, trace handle 0x1000000
- 00000000: 000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d0000
- 00000020: 0000000000000000000000000000000000000000000000000000000000000000
- 00000040: 0000000000000000000000000000000000000000000000000000000000000000
- 00000060: 0000000000000000000000000000000000000000000000000000000000000000
- 00:06:50:520762: handoffdemo-1
- HANDOFFDEMO: current thread 1
-
- Packet 2
-
- 00:06:50:520688: pg-input
- stream x, 128 bytes, 0 sw_if_index
- current data 0, length 128, buffer-pool 0, ref-count 1, trace handle 0x1000001
- 00000000: 000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d0000
- 00000020: 0000000000000000000000000000000000000000000000000000000000000000
- 00000040: 0000000000000000000000000000000000000000000000000000000000000000
- 00000060: 0000000000000000000000000000000000000000000000000000000000000000
- 00:06:50:520762: handoffdemo-1
- HANDOFFDEMO: current thread 1
-
- Packet 3
-
- 00:06:50:520688: pg-input
- stream x, 128 bytes, 0 sw_if_index
- current data 0, length 128, buffer-pool 0, ref-count 1, trace handle 0x1000002
- 00000000: 000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d0000
- 00000020: 0000000000000000000000000000000000000000000000000000000000000000
- 00000040: 0000000000000000000000000000000000000000000000000000000000000000
- 00000060: 0000000000000000000000000000000000000000000000000000000000000000
- 00:06:50:520762: handoffdemo-1
- HANDOFFDEMO: current thread 1
-
- Packet 4
-
- 00:06:50:520688: pg-input
- stream x, 128 bytes, 0 sw_if_index
- current data 0, length 128, buffer-pool 0, ref-count 1, trace handle 0x1000003
- 00000000: 000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d0000
- 00000020: 0000000000000000000000000000000000000000000000000000000000000000
- 00000040: 0000000000000000000000000000000000000000000000000000000000000000
- 00000060: 0000000000000000000000000000000000000000000000000000000000000000
- 00:06:50:520762: handoffdemo-1
- HANDOFFDEMO: current thread 1
-
- Packet 5
-
- 00:06:50:520688: pg-input
- stream x, 128 bytes, 0 sw_if_index
- current data 0, length 128, buffer-pool 0, ref-count 1, trace handle 0x1000004
- 00000000: 000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d0000
- 00000020: 0000000000000000000000000000000000000000000000000000000000000000
- 00000040: 0000000000000000000000000000000000000000000000000000000000000000
- 00000060: 0000000000000000000000000000000000000000000000000000000000000000
- 00:06:50:520762: handoffdemo-1
- HANDOFFDEMO: current thread 1
-
- ------------------- Start of thread 2 vpp_wk_1 -------------------
- Packet 1
-
- 00:06:50:520796: handoff_trace
- HANDED-OFF: from thread 1 trace index 0
- 00:06:50:520796: handoffdemo-2
- HANDOFFDEMO: current thread 2
- 00:06:50:520867: error-drop
- rx:local0
- 00:06:50:520914: drop
- handoffdemo-2: completed packets
-
- Packet 2
-
- 00:06:50:520796: handoff_trace
- HANDED-OFF: from thread 1 trace index 1
- 00:06:50:520796: handoffdemo-2
- HANDOFFDEMO: current thread 2
- 00:06:50:520867: error-drop
- rx:local0
- 00:06:50:520914: drop
- handoffdemo-2: completed packets
-
- Packet 3
-
- 00:06:50:520796: handoff_trace
- HANDED-OFF: from thread 1 trace index 2
- 00:06:50:520796: handoffdemo-2
- HANDOFFDEMO: current thread 2
- 00:06:50:520867: error-drop
- rx:local0
- 00:06:50:520914: drop
- handoffdemo-2: completed packets
-
- Packet 4
-
- 00:06:50:520796: handoff_trace
- HANDED-OFF: from thread 1 trace index 3
- 00:06:50:520796: handoffdemo-2
- HANDOFFDEMO: current thread 2
- 00:06:50:520867: error-drop
- rx:local0
- 00:06:50:520914: drop
- handoffdemo-2: completed packets
-
- Packet 5
-
- 00:06:50:520796: handoff_trace
- HANDED-OFF: from thread 1 trace index 4
- 00:06:50:520796: handoffdemo-2
- HANDOFFDEMO: current thread 2
- 00:06:50:520867: error-drop
- rx:local0
- 00:06:50:520914: drop
- handoffdemo-2: completed packets
- DBGvpp#
-```
diff --git a/src/examples/handoffdemo/handoffdemo.rst b/src/examples/handoffdemo/handoffdemo.rst
new file mode 100644
index 00000000000..d44854cc5cc
--- /dev/null
+++ b/src/examples/handoffdemo/handoffdemo.rst
@@ -0,0 +1,194 @@
+.. _handoff_queue_demo_plugin:
+
+Handoff queue in a plugin
+=========================
+
+This plugin provides a simplified example of how to hand off packets
+between threads. I used it to debug packet-tracer handoff tracing
+support.
+
+Packet generator input script
+-----------------------------
+
+::
+
+ packet-generator new {
+ name x
+ limit 5
+ size 128-128
+ interface local0
+ node handoffdemo-1
+ data {
+ incrementing 30
+ }
+ }
+
+Start vpp with 2 worker threads
+-------------------------------
+
+The demo plugin hands packets from worker 1 to worker 2.
+
+Enable tracing, and start the packet generator
+----------------------------------------------
+
+::
+
+ trace add pg-input 100
+ packet-generator enable
+
+Sample Run
+----------
+
+::
+
+ DBGvpp# ex /tmp/pg_input_script
+ DBGvpp# pa en
+ DBGvpp# sh err
+ Count Node Reason
+ 5 handoffdemo-1 packets handed off processed
+ 5 handoffdemo-2 completed packets
+ DBGvpp# show run
+ Thread 1 vpp_wk_0 (lcore 0)
+ Time 133.9, average vectors/node 5.00, last 128 main loops 0.00 per node 0.00
+ vector rates in 3.7331e-2, out 0.0000e0, drop 0.0000e0, punt 0.0000e0
+ Name State Calls Vectors Suspends Clocks Vectors/Call
+ handoffdemo-1 active 1 5 0 4.76e3 5.00
+ pg-input disabled 2 5 0 5.58e4 2.50
+ unix-epoll-input polling 22760 0 0 2.14e7 0.00
+ ---------------
+ Thread 2 vpp_wk_1 (lcore 2)
+ Time 133.9, average vectors/node 5.00, last 128 main loops 0.00 per node 0.00
+ vector rates in 0.0000e0, out 0.0000e0, drop 3.7331e-2, punt 0.0000e0
+ Name State Calls Vectors Suspends Clocks Vectors/Call
+ drop active 1 5 0 1.35e4 5.00
+ error-drop active 1 5 0 2.52e4 5.00
+ handoffdemo-2 active 1 5 0 2.56e4 5.00
+ unix-epoll-input polling 22406 0 0 2.18e7 0.00
+
+Enable the packet tracer and run it again…
+
+::
+
+ DBGvpp# trace add pg-input 100
+ DBGvpp# pa en
+ DBGvpp# sh trace
+ sh trace
+ ------------------- Start of thread 0 vpp_main -------------------
+ No packets in trace buffer
+ ------------------- Start of thread 1 vpp_wk_0 -------------------
+ Packet 1
+
+ 00:06:50:520688: pg-input
+ stream x, 128 bytes, 0 sw_if_index
+ current data 0, length 128, buffer-pool 0, ref-count 1, trace handle 0x1000000
+ 00000000: 000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d0000
+ 00000020: 0000000000000000000000000000000000000000000000000000000000000000
+ 00000040: 0000000000000000000000000000000000000000000000000000000000000000
+ 00000060: 0000000000000000000000000000000000000000000000000000000000000000
+ 00:06:50:520762: handoffdemo-1
+ HANDOFFDEMO: current thread 1
+
+ Packet 2
+
+ 00:06:50:520688: pg-input
+ stream x, 128 bytes, 0 sw_if_index
+ current data 0, length 128, buffer-pool 0, ref-count 1, trace handle 0x1000001
+ 00000000: 000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d0000
+ 00000020: 0000000000000000000000000000000000000000000000000000000000000000
+ 00000040: 0000000000000000000000000000000000000000000000000000000000000000
+ 00000060: 0000000000000000000000000000000000000000000000000000000000000000
+ 00:06:50:520762: handoffdemo-1
+ HANDOFFDEMO: current thread 1
+
+ Packet 3
+
+ 00:06:50:520688: pg-input
+ stream x, 128 bytes, 0 sw_if_index
+ current data 0, length 128, buffer-pool 0, ref-count 1, trace handle 0x1000002
+ 00000000: 000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d0000
+ 00000020: 0000000000000000000000000000000000000000000000000000000000000000
+ 00000040: 0000000000000000000000000000000000000000000000000000000000000000
+ 00000060: 0000000000000000000000000000000000000000000000000000000000000000
+ 00:06:50:520762: handoffdemo-1
+ HANDOFFDEMO: current thread 1
+
+ Packet 4
+
+ 00:06:50:520688: pg-input
+ stream x, 128 bytes, 0 sw_if_index
+ current data 0, length 128, buffer-pool 0, ref-count 1, trace handle 0x1000003
+ 00000000: 000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d0000
+ 00000020: 0000000000000000000000000000000000000000000000000000000000000000
+ 00000040: 0000000000000000000000000000000000000000000000000000000000000000
+ 00000060: 0000000000000000000000000000000000000000000000000000000000000000
+ 00:06:50:520762: handoffdemo-1
+ HANDOFFDEMO: current thread 1
+
+ Packet 5
+
+ 00:06:50:520688: pg-input
+ stream x, 128 bytes, 0 sw_if_index
+ current data 0, length 128, buffer-pool 0, ref-count 1, trace handle 0x1000004
+ 00000000: 000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d0000
+ 00000020: 0000000000000000000000000000000000000000000000000000000000000000
+ 00000040: 0000000000000000000000000000000000000000000000000000000000000000
+ 00000060: 0000000000000000000000000000000000000000000000000000000000000000
+ 00:06:50:520762: handoffdemo-1
+ HANDOFFDEMO: current thread 1
+
+ ------------------- Start of thread 2 vpp_wk_1 -------------------
+ Packet 1
+
+ 00:06:50:520796: handoff_trace
+ HANDED-OFF: from thread 1 trace index 0
+ 00:06:50:520796: handoffdemo-2
+ HANDOFFDEMO: current thread 2
+ 00:06:50:520867: error-drop
+ rx:local0
+ 00:06:50:520914: drop
+ handoffdemo-2: completed packets
+
+ Packet 2
+
+ 00:06:50:520796: handoff_trace
+ HANDED-OFF: from thread 1 trace index 1
+ 00:06:50:520796: handoffdemo-2
+ HANDOFFDEMO: current thread 2
+ 00:06:50:520867: error-drop
+ rx:local0
+ 00:06:50:520914: drop
+ handoffdemo-2: completed packets
+
+ Packet 3
+
+ 00:06:50:520796: handoff_trace
+ HANDED-OFF: from thread 1 trace index 2
+ 00:06:50:520796: handoffdemo-2
+ HANDOFFDEMO: current thread 2
+ 00:06:50:520867: error-drop
+ rx:local0
+ 00:06:50:520914: drop
+ handoffdemo-2: completed packets
+
+ Packet 4
+
+ 00:06:50:520796: handoff_trace
+ HANDED-OFF: from thread 1 trace index 3
+ 00:06:50:520796: handoffdemo-2
+ HANDOFFDEMO: current thread 2
+ 00:06:50:520867: error-drop
+ rx:local0
+ 00:06:50:520914: drop
+ handoffdemo-2: completed packets
+
+ Packet 5
+
+ 00:06:50:520796: handoff_trace
+ HANDED-OFF: from thread 1 trace index 4
+ 00:06:50:520796: handoffdemo-2
+ HANDOFFDEMO: current thread 2
+ 00:06:50:520867: error-drop
+ rx:local0
+ 00:06:50:520914: drop
+ handoffdemo-2: completed packets
+ DBGvpp#