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[24.4.233.174]) by smtp.gmail.com with ESMTPSA id t21-v6sm8734398pfi.73.2018.07.21.08.10.30 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sat, 21 Jul 2018 08:10:31 -0700 (PDT) Date: Sat, 21 Jul 2018 08:10:29 -0700 From: Richard Cochran To: Ivan Khoronzhuk Cc: davem@davemloft.net, grygorii.strashko@ti.com, corbet@lwn.net, akpm@linux-foundation.org, netdev@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, vinicius.gomes@intel.com, henrik@austad.us, jesus.sanchez-palencia@intel.com, ilias.apalodimas@linaro.org, p-varis@ti.com, spatton@ti.com, francois.ozog@linaro.org, yogeshs@ti.com, nsekhar@ti.com, andrew@lunn.ch Subject: Re: [PATCH v4 net-next 6/6] Documentation: networking: cpsw: add MQPRIO & CBS offload examples Message-ID: <20180721151028.fxjlxordxpsiohwo@localhost> References: <20180721115923.1389-1-ivan.khoronzhuk@linaro.org> <20180721115923.1389-7-ivan.khoronzhuk@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180721115923.1389-7-ivan.khoronzhuk@linaro.org> User-Agent: NeoMutt/20170113 (1.7.2) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jul 21, 2018 at 02:59:23PM +0300, Ivan Khoronzhuk wrote: > 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). > > Reviewed-by: Grygorii Strashko > Signed-off-by: Ivan Khoronzhuk > --- > Documentation/networking/ti-cpsw.txt | 540 +++++++++++++++++++++++++++ > 1 file changed, 540 insertions(+) > create mode 100644 Documentation/networking/ti-cpsw.txt > > diff --git a/Documentation/networking/ti-cpsw.txt b/Documentation/networking/ti-cpsw.txt > new file mode 100644 > index 000000000000..1e840346cae1 > --- /dev/null > +++ b/Documentation/networking/ti-cpsw.txt > @@ -0,0 +1,540 @@ > +* 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 was tested on AM572x EVM and BBB boards. > + > +Test setup > +========== > + > +Under consideration two examples with AM52xx EVM running cpsw driver > +in dual_emac mode. s/AM52xx/AM572x ? Also, there are more mentions of AM52xx, below. Thanks, Richard > + > +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 AM52xx 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 AM52xx 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 > +// Set it +1 Mb for reserve (important!) > +$ tc qdisc add dev eth1 parent 100:3 cbs locredit -1453 \ > +hicredit 47 sendslope -969000 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 -1483 \ > +hicredit 34 sendslope -989000 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 > -- > 2.17.1 >