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Date:   Fri,  1 May 2020 16:44:55 +0200
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     Linux Doc Mailing List <linux-doc@...r.kernel.org>
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        linux-kernel@...r.kernel.org, Jonathan Corbet <corbet@....net>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org
Subject: [PATCH 33/37] docs: networking: device drivers: convert ti/cpsw.txt to ReST

- add SPDX header;
- adjust titles and chapters, adding proper markups;
- mark code blocks and literals as such;
- adjust identation, whitespaces and blank lines where needed;
- add to networking/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
 .../networking/device_drivers/index.rst       |   1 +
 .../networking/device_drivers/ti/cpsw.rst     | 587 ++++++++++++++++++
 .../networking/device_drivers/ti/cpsw.txt     | 541 ----------------
 3 files changed, 588 insertions(+), 541 deletions(-)
 create mode 100644 Documentation/networking/device_drivers/ti/cpsw.rst
 delete mode 100644 Documentation/networking/device_drivers/ti/cpsw.txt

diff --git a/Documentation/networking/device_drivers/index.rst b/Documentation/networking/device_drivers/index.rst
index b3c0c473de2b..1d3b664e6921 100644
--- a/Documentation/networking/device_drivers/index.rst
+++ b/Documentation/networking/device_drivers/index.rst
@@ -48,6 +48,7 @@ Contents:
    sb1000
    smsc/smc9
    ti/cpsw_switchdev
+   ti/cpsw
 
 .. only::  subproject and html
 
diff --git a/Documentation/networking/device_drivers/ti/cpsw.rst b/Documentation/networking/device_drivers/ti/cpsw.rst
new file mode 100644
index 000000000000..a88946bd188b
--- /dev/null
+++ b/Documentation/networking/device_drivers/ti/cpsw.rst
@@ -0,0 +1,587 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+======================================
+Texas Instruments CPSW ethernet driver
+======================================
+
+Multiqueue & CBS & MQPRIO
+=========================
+
+
+The cpsw has 3 CBS shapers for each external ports. This document
+describes MQPRIO and CBS Qdisc offload configuration for cpsw driver
+based on examples. It potentially can be used in audio video bridging
+(AVB) and time sensitive networking (TSN).
+
+The following examples were tested on AM572x EVM and BBB boards.
+
+Test setup
+==========
+
+Under consideration two examples with AM572x EVM running cpsw driver
+in dual_emac mode.
+
+Several prerequisites:
+
+- TX queues must be rated starting from txq0 that has highest priority
+- Traffic classes are used starting from 0, that has highest priority
+- CBS shapers should be used with rated queues
+- The bandwidth for CBS shapers has to be set a little bit more then
+  potential incoming rate, thus, rate of all incoming tx queues has
+  to be a little less
+- Real rates can differ, due to discreetness
+- Map skb-priority to txq is not enough, also skb-priority to l2 prio
+  map has to be created with ip or vconfig tool
+- Any l2/socket prio (0 - 7) for classes can be used, but for
+  simplicity default values are used: 3 and 2
+- only 2 classes tested: A and B, but checked and can work with more,
+  maximum allowed 4, but only for 3 rate can be set.
+
+Test setup for examples
+=======================
+
+::
+
+					+-------------------------------+
+					|--+                            |
+					|  |      Workstation0          |
+					|E |  MAC 18:03:73:66:87:42     |
+    +-----------------------------+  +--|t |                            |
+    |                    | 1  | E |  |  |h |./tsn_listener -d \         |
+    |  Target board:     | 0  | t |--+  |0 | 18:03:73:66:87:42 -i eth0 \|
+    |  AM572x EVM        | 0  | h |     |  | -s 1500                    |
+    |                    | 0  | 0 |     |--+                            |
+    |  Only 2 classes:   |Mb  +---|     +-------------------------------+
+    |  class A, class B  |        |
+    |                    |    +---|     +-------------------------------+
+    |                    | 1  | E |     |--+                            |
+    |                    | 0  | t |     |  |      Workstation1          |
+    |                    | 0  | h |--+  |E |  MAC 20:cf:30:85:7d:fd     |
+    |                    |Mb  | 1 |  +--|t |                            |
+    +-----------------------------+     |h |./tsn_listener -d \         |
+					|0 | 20:cf:30:85:7d:fd -i eth0 \|
+					|  | -s 1500                    |
+					|--+                            |
+					+-------------------------------+
+
+
+Example 1: One port tx AVB configuration scheme for target board
+----------------------------------------------------------------
+
+(prints and scheme for AM572x evm, applicable for single port boards)
+
+- tc - traffic class
+- txq - transmit queue
+- p - priority
+- f - fifo (cpsw fifo)
+- S - shaper configured
+
+::
+
+    +------------------------------------------------------------------+ u
+    | +---------------+  +---------------+  +------+ +------+          | s
+    | |               |  |               |  |      | |      |          | e
+    | | App 1         |  | App 2         |  | Apps | | Apps |          | r
+    | | Class A       |  | Class B       |  | Rest | | Rest |          |
+    | | Eth0          |  | Eth0          |  | Eth0 | | Eth1 |          | s
+    | | VLAN100       |  | VLAN100       |  |   |  | |   |  |          | p
+    | | 40 Mb/s       |  | 20 Mb/s       |  |   |  | |   |  |          | a
+    | | SO_PRIORITY=3 |  | SO_PRIORITY=2 |  |   |  | |   |  |          | c
+    | |   |           |  |   |           |  |   |  | |   |  |          | e
+    | +---|-----------+  +---|-----------+  +---|--+ +---|--+          |
+    +-----|------------------|------------------|--------|-------------+
+	+-+     +------------+                  |        |
+	|       |             +-----------------+     +--+
+	|       |             |                       |
+    +---|-------|-------------|-----------------------|----------------+
+    | +----+ +----+ +----+ +----+                   +----+             |
+    | | p3 | | p2 | | p1 | | p0 |                   | p0 |             | k
+    | \    / \    / \    / \    /                   \    /             | e
+    |  \  /   \  /   \  /   \  /                     \  /              | r
+    |   \/     \/     \/     \/                       \/               | n
+    |    |     |             |                        |                | e
+    |    |     |       +-----+                        |                | l
+    |    |     |       |                              |                |
+    | +----+ +----+ +----+                          +----+             | s
+    | |tc0 | |tc1 | |tc2 |                          |tc0 |             | p
+    | \    / \    / \    /                          \    /             | a
+    |  \  /   \  /   \  /                            \  /              | c
+    |   \/     \/     \/                              \/               | e
+    |   |      |       +-----+                        |                |
+    |   |      |       |     |                        |                |
+    |   |      |       |     |                        |                |
+    |   |      |       |     |                        |                |
+    | +----+ +----+ +----+ +----+                   +----+             |
+    | |txq0| |txq1| |txq2| |txq3|                   |txq4|             |
+    | \    / \    / \    / \    /                   \    /             |
+    |  \  /   \  /   \  /   \  /                     \  /              |
+    |   \/     \/     \/     \/                       \/               |
+    | +-|------|------|------|--+                  +--|--------------+ |
+    | | |      |      |      |  | Eth0.100         |  |     Eth1     | |
+    +---|------|------|------|------------------------|----------------+
+	|      |      |      |                        |
+	p      p      p      p                        |
+	3      2      0-1, 4-7  <- L2 priority        |
+	|      |      |      |                        |
+	|      |      |      |                        |
+    +---|------|------|------|------------------------|----------------+
+    |   |      |      |      |             |----------+                |
+    | +----+ +----+ +----+ +----+       +----+                         |
+    | |dma7| |dma6| |dma5| |dma4|       |dma3|                         |
+    | \    / \    / \    / \    /       \    /                         | c
+    |  \S /   \S /   \  /   \  /         \  /                          | p
+    |   \/     \/     \/     \/           \/                           | s
+    |   |      |      | +-----            |                            | w
+    |   |      |      | |                 |                            |
+    |   |      |      | |                 |                            | d
+    | +----+ +----+ +----+p            p+----+                         | r
+    | |    | |    | |    |o            o|    |                         | i
+    | | f3 | | f2 | | f0 |r            r| f0 |                         | v
+    | |tc0 | |tc1 | |tc2 |t            t|tc0 |                         | e
+    | \CBS / \CBS / \CBS /1            2\CBS /                         | r
+    |  \S /   \S /   \  /                \  /                          |
+    |   \/     \/     \/                  \/                           |
+    +------------------------------------------------------------------+
+
+
+1) ::
+
+
+	// Add 4 tx queues, for interface Eth0, and 1 tx queue for Eth1
+	$ ethtool -L eth0 rx 1 tx 5
+	rx unmodified, ignoring
+
+2) ::
+
+	// Check if num of queues is set correctly:
+	$ ethtool -l eth0
+	Channel parameters for eth0:
+	Pre-set maximums:
+	RX:             8
+	TX:             8
+	Other:          0
+	Combined:       0
+	Current hardware settings:
+	RX:             1
+	TX:             5
+	Other:          0
+	Combined:       0
+
+3) ::
+
+	// TX queues must be rated starting from 0, so set bws for tx0 and tx1
+	// Set rates 40 and 20 Mb/s appropriately.
+	// Pay attention, real speed can differ a bit due to discreetness.
+	// Leave last 2 tx queues not rated.
+	$ echo 40 > /sys/class/net/eth0/queues/tx-0/tx_maxrate
+	$ echo 20 > /sys/class/net/eth0/queues/tx-1/tx_maxrate
+
+4) ::
+
+	// Check maximum rate of tx (cpdma) queues:
+	$ cat /sys/class/net/eth0/queues/tx-*/tx_maxrate
+	40
+	20
+	0
+	0
+	0
+
+5) ::
+
+	// Map skb->priority to traffic class:
+	// 3pri -> tc0, 2pri -> tc1, (0,1,4-7)pri -> tc2
+	// Map traffic class to transmit queue:
+	// tc0 -> txq0, tc1 -> txq1, tc2 -> (txq2, txq3)
+	$ tc qdisc replace dev eth0 handle 100: parent root mqprio num_tc 3 \
+	map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 2 queues 1@0 1@1 2@2 hw 1
+
+5a) ::
+
+	// As two interface sharing same set of tx queues, assign all traffic
+	// coming to interface Eth1 to separate queue in order to not mix it
+	// with traffic from interface Eth0, so use separate txq to send
+	// packets to Eth1, so all prio -> tc0 and tc0 -> txq4
+	// Here hw 0, so here still default configuration for eth1 in hw
+	$ tc qdisc replace dev eth1 handle 100: parent root mqprio num_tc 1 \
+	map 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 queues 1@4 hw 0
+
+6) ::
+
+	// Check classes settings
+	$ tc -g class show dev eth0
+	+---(100:ffe2) mqprio
+	|    +---(100:3) mqprio
+	|    +---(100:4) mqprio
+	|
+	+---(100:ffe1) mqprio
+	|    +---(100:2) mqprio
+	|
+	+---(100:ffe0) mqprio
+	    +---(100:1) mqprio
+
+	$ tc -g class show dev eth1
+	+---(100:ffe0) mqprio
+	    +---(100:5) mqprio
+
+7) ::
+
+	// Set rate for class A - 41 Mbit (tc0, txq0) using CBS Qdisc
+	// Set it +1 Mb for reserve (important!)
+	// here only idle slope is important, others arg are ignored
+	// Pay attention, real speed can differ a bit due to discreetness
+	$ tc qdisc add dev eth0 parent 100:1 cbs locredit -1438 \
+	hicredit 62 sendslope -959000 idleslope 41000 offload 1
+	net eth0: set FIFO3 bw = 50
+
+8) ::
+
+	// Set rate for class B - 21 Mbit (tc1, txq1) using CBS Qdisc:
+	// Set it +1 Mb for reserve (important!)
+	$ tc qdisc add dev eth0 parent 100:2 cbs locredit -1468 \
+	hicredit 65 sendslope -979000 idleslope 21000 offload 1
+	net eth0: set FIFO2 bw = 30
+
+9) ::
+
+	// Create vlan 100 to map sk->priority to vlan qos
+	$ ip link add link eth0 name eth0.100 type vlan id 100
+	8021q: 802.1Q VLAN Support v1.8
+	8021q: adding VLAN 0 to HW filter on device eth0
+	8021q: adding VLAN 0 to HW filter on device eth1
+	net eth0: Adding vlanid 100 to vlan filter
+
+10) ::
+
+	// Map skb->priority to L2 prio, 1 to 1
+	$ ip link set eth0.100 type vlan \
+	egress 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
+
+11) ::
+
+	// Check egress map for vlan 100
+	$ cat /proc/net/vlan/eth0.100
+	[...]
+	INGRESS priority mappings: 0:0  1:0  2:0  3:0  4:0  5:0  6:0 7:0
+	EGRESS priority mappings: 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
+
+12) ::
+
+	// Run your appropriate tools with socket option "SO_PRIORITY"
+	// to 3 for class A and/or to 2 for class B
+	// (I took at https://www.spinics.net/lists/netdev/msg460869.html)
+	./tsn_talker -d 18:03:73:66:87:42 -i eth0.100 -p3 -s 1500&
+	./tsn_talker -d 18:03:73:66:87:42 -i eth0.100 -p2 -s 1500&
+
+13) ::
+
+	// run your listener on workstation (should be in same vlan)
+	// (I took at https://www.spinics.net/lists/netdev/msg460869.html)
+	./tsn_listener -d 18:03:73:66:87:42 -i enp5s0 -s 1500
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39000 kbps
+
+14) ::
+
+	// Restore default configuration if needed
+	$ ip link del eth0.100
+	$ tc qdisc del dev eth1 root
+	$ tc qdisc del dev eth0 root
+	net eth0: Prev FIFO2 is shaped
+	net eth0: set FIFO3 bw = 0
+	net eth0: set FIFO2 bw = 0
+	$ ethtool -L eth0 rx 1 tx 1
+
+Example 2: Two port tx AVB configuration scheme for target board
+----------------------------------------------------------------
+
+(prints and scheme for AM572x evm, for dual emac boards only)
+
+::
+
+    +------------------------------------------------------------------+ u
+    | +----------+  +----------+  +------+  +----------+  +----------+ | s
+    | |          |  |          |  |      |  |          |  |          | | e
+    | | App 1    |  | App 2    |  | Apps |  | App 3    |  | App 4    | | r
+    | | Class A  |  | Class B  |  | Rest |  | Class B  |  | Class A  | |
+    | | Eth0     |  | Eth0     |  |   |  |  | Eth1     |  | Eth1     | | s
+    | | VLAN100  |  | VLAN100  |  |   |  |  | VLAN100  |  | VLAN100  | | p
+    | | 40 Mb/s  |  | 20 Mb/s  |  |   |  |  | 10 Mb/s  |  | 30 Mb/s  | | a
+    | | SO_PRI=3 |  | SO_PRI=2 |  |   |  |  | SO_PRI=3 |  | SO_PRI=2 | | c
+    | |   |      |  |   |      |  |   |  |  |   |      |  |   |      | | e
+    | +---|------+  +---|------+  +---|--+  +---|------+  +---|------+ |
+    +-----|-------------|-------------|---------|-------------|--------+
+	+-+     +-------+             |         +----------+  +----+
+	|       |             +-------+------+             |       |
+	|       |             |              |             |       |
+    +---|-------|-------------|--------------|-------------|-------|---+
+    | +----+ +----+ +----+ +----+          +----+ +----+ +----+ +----+ |
+    | | p3 | | p2 | | p1 | | p0 |          | p0 | | p1 | | p2 | | p3 | | k
+    | \    / \    / \    / \    /          \    / \    / \    / \    / | e
+    |  \  /   \  /   \  /   \  /            \  /   \  /   \  /   \  /  | r
+    |   \/     \/     \/     \/              \/     \/     \/     \/   | n
+    |   |      |             |                |             |      |   | e
+    |   |      |        +----+                +----+        |      |   | l
+    |   |      |        |                          |        |      |   |
+    | +----+ +----+ +----+                        +----+ +----+ +----+ | s
+    | |tc0 | |tc1 | |tc2 |                        |tc2 | |tc1 | |tc0 | | p
+    | \    / \    / \    /                        \    / \    / \    / | a
+    |  \  /   \  /   \  /                          \  /   \  /   \  /  | c
+    |   \/     \/     \/                            \/     \/     \/   | e
+    |   |      |       +-----+                +-----+      |       |   |
+    |   |      |       |     |                |     |      |       |   |
+    |   |      |       |     |                |     |      |       |   |
+    |   |      |       |     |    E      E    |     |      |       |   |
+    | +----+ +----+ +----+ +----+ t      t +----+ +----+ +----+ +----+ |
+    | |txq0| |txq1| |txq4| |txq5| h      h |txq6| |txq7| |txq3| |txq2| |
+    | \    / \    / \    / \    / 0      1 \    / \    / \    / \    / |
+    |  \  /   \  /   \  /   \  /  .      .  \  /   \  /   \  /   \  /  |
+    |   \/     \/     \/     \/   1      1   \/     \/     \/     \/   |
+    | +-|------|------|------|--+ 0      0 +-|------|------|------|--+ |
+    | | |      |      |      |  | 0      0 | |      |      |      |  | |
+    +---|------|------|------|---------------|------|------|------|----+
+	|      |      |      |               |      |      |      |
+	p      p      p      p               p      p      p      p
+	3      2      0-1, 4-7   <-L2 pri->  0-1, 4-7      2      3
+	|      |      |      |               |      |      |      |
+	|      |      |      |               |      |      |      |
+    +---|------|------|------|---------------|------|------|------|----+
+    |   |      |      |      |               |      |      |      |    |
+    | +----+ +----+ +----+ +----+          +----+ +----+ +----+ +----+ |
+    | |dma7| |dma6| |dma3| |dma2|          |dma1| |dma0| |dma4| |dma5| |
+    | \    / \    / \    / \    /          \    / \    / \    / \    / | c
+    |  \S /   \S /   \  /   \  /            \  /   \  /   \S /   \S /  | p
+    |   \/     \/     \/     \/              \/     \/     \/     \/   | s
+    |   |      |      | +-----                |      |      |      |   | w
+    |   |      |      | |                     +----+ |      |      |   |
+    |   |      |      | |                          | |      |      |   | d
+    | +----+ +----+ +----+p                      p+----+ +----+ +----+ | r
+    | |    | |    | |    |o                      o|    | |    | |    | | i
+    | | f3 | | f2 | | f0 |r        CPSW          r| f3 | | f2 | | f0 | | v
+    | |tc0 | |tc1 | |tc2 |t                      t|tc0 | |tc1 | |tc2 | | e
+    | \CBS / \CBS / \CBS /1                      2\CBS / \CBS / \CBS / | r
+    |  \S /   \S /   \  /                          \S /   \S /   \  /  |
+    |   \/     \/     \/                            \/     \/     \/   |
+    +------------------------------------------------------------------+
+    ========================================Eth==========================>
+
+1) ::
+
+	// Add 8 tx queues, for interface Eth0, but they are common, so are accessed
+	// by two interfaces Eth0 and Eth1.
+	$ ethtool -L eth1 rx 1 tx 8
+	rx unmodified, ignoring
+
+2) ::
+
+	// Check if num of queues is set correctly:
+	$ ethtool -l eth0
+	Channel parameters for eth0:
+	Pre-set maximums:
+	RX:             8
+	TX:             8
+	Other:          0
+	Combined:       0
+	Current hardware settings:
+	RX:             1
+	TX:             8
+	Other:          0
+	Combined:       0
+
+3) ::
+
+	// TX queues must be rated starting from 0, so set bws for tx0 and tx1 for Eth0
+	// and for tx2 and tx3 for Eth1. That is, rates 40 and 20 Mb/s appropriately
+	// for Eth0 and 30 and 10 Mb/s for Eth1.
+	// Real speed can differ a bit due to discreetness
+	// Leave last 4 tx queues as not rated
+	$ echo 40 > /sys/class/net/eth0/queues/tx-0/tx_maxrate
+	$ echo 20 > /sys/class/net/eth0/queues/tx-1/tx_maxrate
+	$ echo 30 > /sys/class/net/eth1/queues/tx-2/tx_maxrate
+	$ echo 10 > /sys/class/net/eth1/queues/tx-3/tx_maxrate
+
+4) ::
+
+	// Check maximum rate of tx (cpdma) queues:
+	$ cat /sys/class/net/eth0/queues/tx-*/tx_maxrate
+	40
+	20
+	30
+	10
+	0
+	0
+	0
+	0
+
+5) ::
+
+	// Map skb->priority to traffic class for Eth0:
+	// 3pri -> tc0, 2pri -> tc1, (0,1,4-7)pri -> tc2
+	// Map traffic class to transmit queue:
+	// tc0 -> txq0, tc1 -> txq1, tc2 -> (txq4, txq5)
+	$ tc qdisc replace dev eth0 handle 100: parent root mqprio num_tc 3 \
+	map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 2 queues 1@0 1@1 2@4 hw 1
+
+6) ::
+
+	// Check classes settings
+	$ tc -g class show dev eth0
+	+---(100:ffe2) mqprio
+	|    +---(100:5) mqprio
+	|    +---(100:6) mqprio
+	|
+	+---(100:ffe1) mqprio
+	|    +---(100:2) mqprio
+	|
+	+---(100:ffe0) mqprio
+	    +---(100:1) mqprio
+
+7) ::
+
+	// Set rate for class A - 41 Mbit (tc0, txq0) using CBS Qdisc for Eth0
+	// here only idle slope is important, others ignored
+	// Real speed can differ a bit due to discreetness
+	$ tc qdisc add dev eth0 parent 100:1 cbs locredit -1470 \
+	hicredit 62 sendslope -959000 idleslope 41000 offload 1
+	net eth0: set FIFO3 bw = 50
+
+8) ::
+
+	// Set rate for class B - 21 Mbit (tc1, txq1) using CBS Qdisc for Eth0
+	$ tc qdisc add dev eth0 parent 100:2 cbs locredit -1470 \
+	hicredit 65 sendslope -979000 idleslope 21000 offload 1
+	net eth0: set FIFO2 bw = 30
+
+9) ::
+
+	// Create vlan 100 to map sk->priority to vlan qos for Eth0
+	$ ip link add link eth0 name eth0.100 type vlan id 100
+	net eth0: Adding vlanid 100 to vlan filter
+
+10) ::
+
+	// Map skb->priority to L2 prio for Eth0.100, one to one
+	$ ip link set eth0.100 type vlan \
+	egress 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
+
+11) ::
+
+	// Check egress map for vlan 100
+	$ cat /proc/net/vlan/eth0.100
+	[...]
+	INGRESS priority mappings: 0:0  1:0  2:0  3:0  4:0  5:0  6:0 7:0
+	EGRESS priority mappings: 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
+
+12) ::
+
+	// Map skb->priority to traffic class for Eth1:
+	// 3pri -> tc0, 2pri -> tc1, (0,1,4-7)pri -> tc2
+	// Map traffic class to transmit queue:
+	// tc0 -> txq2, tc1 -> txq3, tc2 -> (txq6, txq7)
+	$ tc qdisc replace dev eth1 handle 100: parent root mqprio num_tc 3 \
+	map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 2 queues 1@2 1@3 2@6 hw 1
+
+13) ::
+
+	// Check classes settings
+	$ tc -g class show dev eth1
+	+---(100:ffe2) mqprio
+	|    +---(100:7) mqprio
+	|    +---(100:8) mqprio
+	|
+	+---(100:ffe1) mqprio
+	|    +---(100:4) mqprio
+	|
+	+---(100:ffe0) mqprio
+	    +---(100:3) mqprio
+
+14) ::
+
+	// Set rate for class A - 31 Mbit (tc0, txq2) using CBS Qdisc for Eth1
+	// here only idle slope is important, others ignored, but calculated
+	// for interface speed - 100Mb for eth1 port.
+	// Set it +1 Mb for reserve (important!)
+	$ tc qdisc add dev eth1 parent 100:3 cbs locredit -1035 \
+	hicredit 465 sendslope -69000 idleslope 31000 offload 1
+	net eth1: set FIFO3 bw = 31
+
+15) ::
+
+	// Set rate for class B - 11 Mbit (tc1, txq3) using CBS Qdisc for Eth1
+	// Set it +1 Mb for reserve (important!)
+	$ tc qdisc add dev eth1 parent 100:4 cbs locredit -1335 \
+	hicredit 405 sendslope -89000 idleslope 11000 offload 1
+	net eth1: set FIFO2 bw = 11
+
+16) ::
+
+	// Create vlan 100 to map sk->priority to vlan qos for Eth1
+	$ ip link add link eth1 name eth1.100 type vlan id 100
+	net eth1: Adding vlanid 100 to vlan filter
+
+17) ::
+
+	// Map skb->priority to L2 prio for Eth1.100, one to one
+	$ ip link set eth1.100 type vlan \
+	egress 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
+
+18) ::
+
+	// Check egress map for vlan 100
+	$ cat /proc/net/vlan/eth1.100
+	[...]
+	INGRESS priority mappings: 0:0  1:0  2:0  3:0  4:0  5:0  6:0 7:0
+	EGRESS priority mappings: 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
+
+19) ::
+
+	// Run appropriate tools with socket option "SO_PRIORITY" to 3
+	// for class A and to 2 for class B. For both interfaces
+	./tsn_talker -d 18:03:73:66:87:42 -i eth0.100 -p2 -s 1500&
+	./tsn_talker -d 18:03:73:66:87:42 -i eth0.100 -p3 -s 1500&
+	./tsn_talker -d 20:cf:30:85:7d:fd -i eth1.100 -p2 -s 1500&
+	./tsn_talker -d 20:cf:30:85:7d:fd -i eth1.100 -p3 -s 1500&
+
+20) ::
+
+	// run your listener on workstation (should be in same vlan)
+	// (I took at https://www.spinics.net/lists/netdev/msg460869.html)
+	./tsn_listener -d 18:03:73:66:87:42 -i enp5s0 -s 1500
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39012 kbps
+	Receiving data rate: 39000 kbps
+
+21) ::
+
+	// Restore default configuration if needed
+	$ ip link del eth1.100
+	$ ip link del eth0.100
+	$ tc qdisc del dev eth1 root
+	net eth1: Prev FIFO2 is shaped
+	net eth1: set FIFO3 bw = 0
+	net eth1: set FIFO2 bw = 0
+	$ tc qdisc del dev eth0 root
+	net eth0: Prev FIFO2 is shaped
+	net eth0: set FIFO3 bw = 0
+	net eth0: set FIFO2 bw = 0
+	$ ethtool -L eth0 rx 1 tx 1
diff --git a/Documentation/networking/device_drivers/ti/cpsw.txt b/Documentation/networking/device_drivers/ti/cpsw.txt
deleted file mode 100644
index d4d4c0751a09..000000000000
--- a/Documentation/networking/device_drivers/ti/cpsw.txt
+++ /dev/null
@@ -1,541 +0,0 @@
-* Texas Instruments CPSW ethernet driver
-
-Multiqueue & CBS & MQPRIO
-=====================================================================
-=====================================================================
-
-The cpsw has 3 CBS shapers for each external ports. This document
-describes MQPRIO and CBS Qdisc offload configuration for cpsw driver
-based on examples. It potentially can be used in audio video bridging
-(AVB) and time sensitive networking (TSN).
-
-The following examples were tested on AM572x EVM and BBB boards.
-
-Test setup
-==========
-
-Under consideration two examples with AM572x EVM running cpsw driver
-in dual_emac mode.
-
-Several prerequisites:
-- TX queues must be rated starting from txq0 that has highest priority
-- Traffic classes are used starting from 0, that has highest priority
-- CBS shapers should be used with rated queues
-- The bandwidth for CBS shapers has to be set a little bit more then
-  potential incoming rate, thus, rate of all incoming tx queues has
-  to be a little less
-- Real rates can differ, due to discreetness
-- Map skb-priority to txq is not enough, also skb-priority to l2 prio
-  map has to be created with ip or vconfig tool
-- Any l2/socket prio (0 - 7) for classes can be used, but for
-  simplicity default values are used: 3 and 2
-- only 2 classes tested: A and B, but checked and can work with more,
-  maximum allowed 4, but only for 3 rate can be set.
-
-Test setup for examples
-=======================
-                                    +-------------------------------+
-                                    |--+                            |
-                                    |  |      Workstation0          |
-                                    |E |  MAC 18:03:73:66:87:42     |
-+-----------------------------+  +--|t |                            |
-|                    | 1  | E |  |  |h |./tsn_listener -d \         |
-|  Target board:     | 0  | t |--+  |0 | 18:03:73:66:87:42 -i eth0 \|
-|  AM572x EVM        | 0  | h |     |  | -s 1500                    |
-|                    | 0  | 0 |     |--+                            |
-|  Only 2 classes:   |Mb  +---|     +-------------------------------+
-|  class A, class B  |        |
-|                    |    +---|     +-------------------------------+
-|                    | 1  | E |     |--+                            |
-|                    | 0  | t |     |  |      Workstation1          |
-|                    | 0  | h |--+  |E |  MAC 20:cf:30:85:7d:fd     |
-|                    |Mb  | 1 |  +--|t |                            |
-+-----------------------------+     |h |./tsn_listener -d \         |
-                                    |0 | 20:cf:30:85:7d:fd -i eth0 \|
-                                    |  | -s 1500                    |
-                                    |--+                            |
-                                    +-------------------------------+
-
-*********************************************************************
-*********************************************************************
-*********************************************************************
-Example 1: One port tx AVB configuration scheme for target board
-----------------------------------------------------------------------
-(prints and scheme for AM572x evm, applicable for single port boards)
-
-tc - traffic class
-txq - transmit queue
-p - priority
-f - fifo (cpsw fifo)
-S - shaper configured
-
-+------------------------------------------------------------------+ u
-| +---------------+  +---------------+  +------+ +------+          | s
-| |               |  |               |  |      | |      |          | e
-| | App 1         |  | App 2         |  | Apps | | Apps |          | r
-| | Class A       |  | Class B       |  | Rest | | Rest |          |
-| | Eth0          |  | Eth0          |  | Eth0 | | Eth1 |          | s
-| | VLAN100       |  | VLAN100       |  |   |  | |   |  |          | p
-| | 40 Mb/s       |  | 20 Mb/s       |  |   |  | |   |  |          | a
-| | SO_PRIORITY=3 |  | SO_PRIORITY=2 |  |   |  | |   |  |          | c
-| |   |           |  |   |           |  |   |  | |   |  |          | e
-| +---|-----------+  +---|-----------+  +---|--+ +---|--+          |
-+-----|------------------|------------------|--------|-------------+
-    +-+     +------------+                  |        |
-    |       |             +-----------------+     +--+
-    |       |             |                       |
-+---|-------|-------------|-----------------------|----------------+
-| +----+ +----+ +----+ +----+                   +----+             |
-| | p3 | | p2 | | p1 | | p0 |                   | p0 |             | k
-| \    / \    / \    / \    /                   \    /             | e
-|  \  /   \  /   \  /   \  /                     \  /              | r
-|   \/     \/     \/     \/                       \/               | n
-|    |     |             |                        |                | e
-|    |     |       +-----+                        |                | l
-|    |     |       |                              |                |
-| +----+ +----+ +----+                          +----+             | s
-| |tc0 | |tc1 | |tc2 |                          |tc0 |             | p
-| \    / \    / \    /                          \    /             | a
-|  \  /   \  /   \  /                            \  /              | c
-|   \/     \/     \/                              \/               | e
-|   |      |       +-----+                        |                |
-|   |      |       |     |                        |                |
-|   |      |       |     |                        |                |
-|   |      |       |     |                        |                |
-| +----+ +----+ +----+ +----+                   +----+             |
-| |txq0| |txq1| |txq2| |txq3|                   |txq4|             |
-| \    / \    / \    / \    /                   \    /             |
-|  \  /   \  /   \  /   \  /                     \  /              |
-|   \/     \/     \/     \/                       \/               |
-| +-|------|------|------|--+                  +--|--------------+ |
-| | |      |      |      |  | Eth0.100         |  |     Eth1     | |
-+---|------|------|------|------------------------|----------------+
-    |      |      |      |                        |
-    p      p      p      p                        |
-    3      2      0-1, 4-7  <- L2 priority        |
-    |      |      |      |                        |
-    |      |      |      |                        |
-+---|------|------|------|------------------------|----------------+
-|   |      |      |      |             |----------+                |
-| +----+ +----+ +----+ +----+       +----+                         |
-| |dma7| |dma6| |dma5| |dma4|       |dma3|                         |
-| \    / \    / \    / \    /       \    /                         | c
-|  \S /   \S /   \  /   \  /         \  /                          | p
-|   \/     \/     \/     \/           \/                           | s
-|   |      |      | +-----            |                            | w
-|   |      |      | |                 |                            |
-|   |      |      | |                 |                            | d
-| +----+ +----+ +----+p            p+----+                         | r
-| |    | |    | |    |o            o|    |                         | i
-| | f3 | | f2 | | f0 |r            r| f0 |                         | v
-| |tc0 | |tc1 | |tc2 |t            t|tc0 |                         | e
-| \CBS / \CBS / \CBS /1            2\CBS /                         | r
-|  \S /   \S /   \  /                \  /                          |
-|   \/     \/     \/                  \/                           |
-+------------------------------------------------------------------+
-========================================Eth==========================>
-
-1)
-// Add 4 tx queues, for interface Eth0, and 1 tx queue for Eth1
-$ ethtool -L eth0 rx 1 tx 5
-rx unmodified, ignoring
-
-2)
-// Check if num of queues is set correctly:
-$ ethtool -l eth0
-Channel parameters for eth0:
-Pre-set maximums:
-RX:             8
-TX:             8
-Other:          0
-Combined:       0
-Current hardware settings:
-RX:             1
-TX:             5
-Other:          0
-Combined:       0
-
-3)
-// TX queues must be rated starting from 0, so set bws for tx0 and tx1
-// Set rates 40 and 20 Mb/s appropriately.
-// Pay attention, real speed can differ a bit due to discreetness.
-// Leave last 2 tx queues not rated.
-$ echo 40 > /sys/class/net/eth0/queues/tx-0/tx_maxrate
-$ echo 20 > /sys/class/net/eth0/queues/tx-1/tx_maxrate
-
-4)
-// Check maximum rate of tx (cpdma) queues:
-$ cat /sys/class/net/eth0/queues/tx-*/tx_maxrate
-40
-20
-0
-0
-0
-
-5)
-// Map skb->priority to traffic class:
-// 3pri -> tc0, 2pri -> tc1, (0,1,4-7)pri -> tc2
-// Map traffic class to transmit queue:
-// tc0 -> txq0, tc1 -> txq1, tc2 -> (txq2, txq3)
-$ tc qdisc replace dev eth0 handle 100: parent root mqprio num_tc 3 \
-map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 2 queues 1@0 1@1 2@2 hw 1
-
-5a)
-// As two interface sharing same set of tx queues, assign all traffic
-// coming to interface Eth1 to separate queue in order to not mix it
-// with traffic from interface Eth0, so use separate txq to send
-// packets to Eth1, so all prio -> tc0 and tc0 -> txq4
-// Here hw 0, so here still default configuration for eth1 in hw
-$ tc qdisc replace dev eth1 handle 100: parent root mqprio num_tc 1 \
-map 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 queues 1@4 hw 0
-
-6)
-// Check classes settings
-$ tc -g class show dev eth0
-+---(100:ffe2) mqprio
-|    +---(100:3) mqprio
-|    +---(100:4) mqprio
-|
-+---(100:ffe1) mqprio
-|    +---(100:2) mqprio
-|
-+---(100:ffe0) mqprio
-     +---(100:1) mqprio
-
-$ tc -g class show dev eth1
-+---(100:ffe0) mqprio
-     +---(100:5) mqprio
-
-7)
-// Set rate for class A - 41 Mbit (tc0, txq0) using CBS Qdisc
-// Set it +1 Mb for reserve (important!)
-// here only idle slope is important, others arg are ignored
-// Pay attention, real speed can differ a bit due to discreetness
-$ tc qdisc add dev eth0 parent 100:1 cbs locredit -1438 \
-hicredit 62 sendslope -959000 idleslope 41000 offload 1
-net eth0: set FIFO3 bw = 50
-
-8)
-// Set rate for class B - 21 Mbit (tc1, txq1) using CBS Qdisc:
-// Set it +1 Mb for reserve (important!)
-$ tc qdisc add dev eth0 parent 100:2 cbs locredit -1468 \
-hicredit 65 sendslope -979000 idleslope 21000 offload 1
-net eth0: set FIFO2 bw = 30
-
-9)
-// Create vlan 100 to map sk->priority to vlan qos
-$ ip link add link eth0 name eth0.100 type vlan id 100
-8021q: 802.1Q VLAN Support v1.8
-8021q: adding VLAN 0 to HW filter on device eth0
-8021q: adding VLAN 0 to HW filter on device eth1
-net eth0: Adding vlanid 100 to vlan filter
-
-10)
-// Map skb->priority to L2 prio, 1 to 1
-$ ip link set eth0.100 type vlan \
-egress 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
-
-11)
-// Check egress map for vlan 100
-$ cat /proc/net/vlan/eth0.100
-[...]
-INGRESS priority mappings: 0:0  1:0  2:0  3:0  4:0  5:0  6:0 7:0
-EGRESS priority mappings: 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
-
-12)
-// Run your appropriate tools with socket option "SO_PRIORITY"
-// to 3 for class A and/or to 2 for class B
-// (I took at https://www.spinics.net/lists/netdev/msg460869.html)
-./tsn_talker -d 18:03:73:66:87:42 -i eth0.100 -p3 -s 1500&
-./tsn_talker -d 18:03:73:66:87:42 -i eth0.100 -p2 -s 1500&
-
-13)
-// run your listener on workstation (should be in same vlan)
-// (I took at https://www.spinics.net/lists/netdev/msg460869.html)
-./tsn_listener -d 18:03:73:66:87:42 -i enp5s0 -s 1500
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39000 kbps
-
-14)
-// Restore default configuration if needed
-$ ip link del eth0.100
-$ tc qdisc del dev eth1 root
-$ tc qdisc del dev eth0 root
-net eth0: Prev FIFO2 is shaped
-net eth0: set FIFO3 bw = 0
-net eth0: set FIFO2 bw = 0
-$ ethtool -L eth0 rx 1 tx 1
-
-*********************************************************************
-*********************************************************************
-*********************************************************************
-Example 2: Two port tx AVB configuration scheme for target board
-----------------------------------------------------------------------
-(prints and scheme for AM572x evm, for dual emac boards only)
-
-+------------------------------------------------------------------+ u
-| +----------+  +----------+  +------+  +----------+  +----------+ | s
-| |          |  |          |  |      |  |          |  |          | | e
-| | App 1    |  | App 2    |  | Apps |  | App 3    |  | App 4    | | r
-| | Class A  |  | Class B  |  | Rest |  | Class B  |  | Class A  | |
-| | Eth0     |  | Eth0     |  |   |  |  | Eth1     |  | Eth1     | | s
-| | VLAN100  |  | VLAN100  |  |   |  |  | VLAN100  |  | VLAN100  | | p
-| | 40 Mb/s  |  | 20 Mb/s  |  |   |  |  | 10 Mb/s  |  | 30 Mb/s  | | a
-| | SO_PRI=3 |  | SO_PRI=2 |  |   |  |  | SO_PRI=3 |  | SO_PRI=2 | | c
-| |   |      |  |   |      |  |   |  |  |   |      |  |   |      | | e
-| +---|------+  +---|------+  +---|--+  +---|------+  +---|------+ |
-+-----|-------------|-------------|---------|-------------|--------+
-    +-+     +-------+             |         +----------+  +----+
-    |       |             +-------+------+             |       |
-    |       |             |              |             |       |
-+---|-------|-------------|--------------|-------------|-------|---+
-| +----+ +----+ +----+ +----+          +----+ +----+ +----+ +----+ |
-| | p3 | | p2 | | p1 | | p0 |          | p0 | | p1 | | p2 | | p3 | | k
-| \    / \    / \    / \    /          \    / \    / \    / \    / | e
-|  \  /   \  /   \  /   \  /            \  /   \  /   \  /   \  /  | r
-|   \/     \/     \/     \/              \/     \/     \/     \/   | n
-|   |      |             |                |             |      |   | e
-|   |      |        +----+                +----+        |      |   | l
-|   |      |        |                          |        |      |   |
-| +----+ +----+ +----+                        +----+ +----+ +----+ | s
-| |tc0 | |tc1 | |tc2 |                        |tc2 | |tc1 | |tc0 | | p
-| \    / \    / \    /                        \    / \    / \    / | a
-|  \  /   \  /   \  /                          \  /   \  /   \  /  | c
-|   \/     \/     \/                            \/     \/     \/   | e
-|   |      |       +-----+                +-----+      |       |   |
-|   |      |       |     |                |     |      |       |   |
-|   |      |       |     |                |     |      |       |   |
-|   |      |       |     |    E      E    |     |      |       |   |
-| +----+ +----+ +----+ +----+ t      t +----+ +----+ +----+ +----+ |
-| |txq0| |txq1| |txq4| |txq5| h      h |txq6| |txq7| |txq3| |txq2| |
-| \    / \    / \    / \    / 0      1 \    / \    / \    / \    / |
-|  \  /   \  /   \  /   \  /  .      .  \  /   \  /   \  /   \  /  |
-|   \/     \/     \/     \/   1      1   \/     \/     \/     \/   |
-| +-|------|------|------|--+ 0      0 +-|------|------|------|--+ |
-| | |      |      |      |  | 0      0 | |      |      |      |  | |
-+---|------|------|------|---------------|------|------|------|----+
-    |      |      |      |               |      |      |      |
-    p      p      p      p               p      p      p      p
-    3      2      0-1, 4-7   <-L2 pri->  0-1, 4-7      2      3
-    |      |      |      |               |      |      |      |
-    |      |      |      |               |      |      |      |
-+---|------|------|------|---------------|------|------|------|----+
-|   |      |      |      |               |      |      |      |    |
-| +----+ +----+ +----+ +----+          +----+ +----+ +----+ +----+ |
-| |dma7| |dma6| |dma3| |dma2|          |dma1| |dma0| |dma4| |dma5| |
-| \    / \    / \    / \    /          \    / \    / \    / \    / | c
-|  \S /   \S /   \  /   \  /            \  /   \  /   \S /   \S /  | p
-|   \/     \/     \/     \/              \/     \/     \/     \/   | s
-|   |      |      | +-----                |      |      |      |   | w
-|   |      |      | |                     +----+ |      |      |   |
-|   |      |      | |                          | |      |      |   | d
-| +----+ +----+ +----+p                      p+----+ +----+ +----+ | r
-| |    | |    | |    |o                      o|    | |    | |    | | i
-| | f3 | | f2 | | f0 |r        CPSW          r| f3 | | f2 | | f0 | | v
-| |tc0 | |tc1 | |tc2 |t                      t|tc0 | |tc1 | |tc2 | | e
-| \CBS / \CBS / \CBS /1                      2\CBS / \CBS / \CBS / | r
-|  \S /   \S /   \  /                          \S /   \S /   \  /  |
-|   \/     \/     \/                            \/     \/     \/   |
-+------------------------------------------------------------------+
-========================================Eth==========================>
-
-1)
-// Add 8 tx queues, for interface Eth0, but they are common, so are accessed
-// by two interfaces Eth0 and Eth1.
-$ ethtool -L eth1 rx 1 tx 8
-rx unmodified, ignoring
-
-2)
-// Check if num of queues is set correctly:
-$ ethtool -l eth0
-Channel parameters for eth0:
-Pre-set maximums:
-RX:             8
-TX:             8
-Other:          0
-Combined:       0
-Current hardware settings:
-RX:             1
-TX:             8
-Other:          0
-Combined:       0
-
-3)
-// TX queues must be rated starting from 0, so set bws for tx0 and tx1 for Eth0
-// and for tx2 and tx3 for Eth1. That is, rates 40 and 20 Mb/s appropriately
-// for Eth0 and 30 and 10 Mb/s for Eth1.
-// Real speed can differ a bit due to discreetness
-// Leave last 4 tx queues as not rated
-$ echo 40 > /sys/class/net/eth0/queues/tx-0/tx_maxrate
-$ echo 20 > /sys/class/net/eth0/queues/tx-1/tx_maxrate
-$ echo 30 > /sys/class/net/eth1/queues/tx-2/tx_maxrate
-$ echo 10 > /sys/class/net/eth1/queues/tx-3/tx_maxrate
-
-4)
-// Check maximum rate of tx (cpdma) queues:
-$ cat /sys/class/net/eth0/queues/tx-*/tx_maxrate
-40
-20
-30
-10
-0
-0
-0
-0
-
-5)
-// Map skb->priority to traffic class for Eth0:
-// 3pri -> tc0, 2pri -> tc1, (0,1,4-7)pri -> tc2
-// Map traffic class to transmit queue:
-// tc0 -> txq0, tc1 -> txq1, tc2 -> (txq4, txq5)
-$ tc qdisc replace dev eth0 handle 100: parent root mqprio num_tc 3 \
-map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 2 queues 1@0 1@1 2@4 hw 1
-
-6)
-// Check classes settings
-$ tc -g class show dev eth0
-+---(100:ffe2) mqprio
-|    +---(100:5) mqprio
-|    +---(100:6) mqprio
-|
-+---(100:ffe1) mqprio
-|    +---(100:2) mqprio
-|
-+---(100:ffe0) mqprio
-     +---(100:1) mqprio
-
-7)
-// Set rate for class A - 41 Mbit (tc0, txq0) using CBS Qdisc for Eth0
-// here only idle slope is important, others ignored
-// Real speed can differ a bit due to discreetness
-$ tc qdisc add dev eth0 parent 100:1 cbs locredit -1470 \
-hicredit 62 sendslope -959000 idleslope 41000 offload 1
-net eth0: set FIFO3 bw = 50
-
-8)
-// Set rate for class B - 21 Mbit (tc1, txq1) using CBS Qdisc for Eth0
-$ tc qdisc add dev eth0 parent 100:2 cbs locredit -1470 \
-hicredit 65 sendslope -979000 idleslope 21000 offload 1
-net eth0: set FIFO2 bw = 30
-
-9)
-// Create vlan 100 to map sk->priority to vlan qos for Eth0
-$ ip link add link eth0 name eth0.100 type vlan id 100
-net eth0: Adding vlanid 100 to vlan filter
-
-10)
-// Map skb->priority to L2 prio for Eth0.100, one to one
-$ ip link set eth0.100 type vlan \
-egress 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
-
-11)
-// Check egress map for vlan 100
-$ cat /proc/net/vlan/eth0.100
-[...]
-INGRESS priority mappings: 0:0  1:0  2:0  3:0  4:0  5:0  6:0 7:0
-EGRESS priority mappings: 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
-
-12)
-// Map skb->priority to traffic class for Eth1:
-// 3pri -> tc0, 2pri -> tc1, (0,1,4-7)pri -> tc2
-// Map traffic class to transmit queue:
-// tc0 -> txq2, tc1 -> txq3, tc2 -> (txq6, txq7)
-$ tc qdisc replace dev eth1 handle 100: parent root mqprio num_tc 3 \
-map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 2 queues 1@2 1@3 2@6 hw 1
-
-13)
-// Check classes settings
-$ tc -g class show dev eth1
-+---(100:ffe2) mqprio
-|    +---(100:7) mqprio
-|    +---(100:8) mqprio
-|
-+---(100:ffe1) mqprio
-|    +---(100:4) mqprio
-|
-+---(100:ffe0) mqprio
-     +---(100:3) mqprio
-
-14)
-// Set rate for class A - 31 Mbit (tc0, txq2) using CBS Qdisc for Eth1
-// here only idle slope is important, others ignored, but calculated
-// for interface speed - 100Mb for eth1 port.
-// Set it +1 Mb for reserve (important!)
-$ tc qdisc add dev eth1 parent 100:3 cbs locredit -1035 \
-hicredit 465 sendslope -69000 idleslope 31000 offload 1
-net eth1: set FIFO3 bw = 31
-
-15)
-// Set rate for class B - 11 Mbit (tc1, txq3) using CBS Qdisc for Eth1
-// Set it +1 Mb for reserve (important!)
-$ tc qdisc add dev eth1 parent 100:4 cbs locredit -1335 \
-hicredit 405 sendslope -89000 idleslope 11000 offload 1
-net eth1: set FIFO2 bw = 11
-
-16)
-// Create vlan 100 to map sk->priority to vlan qos for Eth1
-$ ip link add link eth1 name eth1.100 type vlan id 100
-net eth1: Adding vlanid 100 to vlan filter
-
-17)
-// Map skb->priority to L2 prio for Eth1.100, one to one
-$ ip link set eth1.100 type vlan \
-egress 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
-
-18)
-// Check egress map for vlan 100
-$ cat /proc/net/vlan/eth1.100
-[...]
-INGRESS priority mappings: 0:0  1:0  2:0  3:0  4:0  5:0  6:0 7:0
-EGRESS priority mappings: 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
-
-19)
-// Run appropriate tools with socket option "SO_PRIORITY" to 3
-// for class A and to 2 for class B. For both interfaces
-./tsn_talker -d 18:03:73:66:87:42 -i eth0.100 -p2 -s 1500&
-./tsn_talker -d 18:03:73:66:87:42 -i eth0.100 -p3 -s 1500&
-./tsn_talker -d 20:cf:30:85:7d:fd -i eth1.100 -p2 -s 1500&
-./tsn_talker -d 20:cf:30:85:7d:fd -i eth1.100 -p3 -s 1500&
-
-20)
-// run your listener on workstation (should be in same vlan)
-// (I took at https://www.spinics.net/lists/netdev/msg460869.html)
-./tsn_listener -d 18:03:73:66:87:42 -i enp5s0 -s 1500
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39012 kbps
-Receiving data rate: 39000 kbps
-
-21)
-// Restore default configuration if needed
-$ ip link del eth1.100
-$ ip link del eth0.100
-$ tc qdisc del dev eth1 root
-net eth1: Prev FIFO2 is shaped
-net eth1: set FIFO3 bw = 0
-net eth1: set FIFO2 bw = 0
-$ tc qdisc del dev eth0 root
-net eth0: Prev FIFO2 is shaped
-net eth0: set FIFO3 bw = 0
-net eth0: set FIFO2 bw = 0
-$ ethtool -L eth0 rx 1 tx 1
-- 
2.25.4

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