[dts] [PATCH v2]test_plans: add rxtx_offload_test_plan.rst

Tu, Lijuan lijuan.tu at intel.com
Fri Feb 1 06:19:57 CET 2019
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Applied, thanks

> -----Original Message-----
> From: dts [mailto:dts-bounces at dpdk.org] On Behalf Of Peng Yuan
> Sent: Thursday, January 31, 2019 2:00 PM
> To: dts at dpdk.org
> Cc: Peng, Yuan <yuan.peng at intel.com>
> Subject: [dts] [PATCH v2]test_plans: add rxtx_offload_test_plan.rst
> 
> Add rxtx_offload_test_plan.rst to test_plans
> 
> Signed-off-by: Peng Yuan <yuan.peng at intel.com>
> 
> diff --git a/test_plans/rxtx_offload_test_plan.rst
> b/test_plans/rxtx_offload_test_plan.rst
> new file mode 100644
> index 0000000..8ecf366
> --- /dev/null
> +++ b/test_plans/rxtx_offload_test_plan.rst
> @@ -0,0 +1,601 @@
> +.. Copyright (c) <2018>, Intel Corporation
> +            All rights reserved.
> +
> +   Redistribution and use in source and binary forms, with or without
> +   modification, are permitted provided that the following conditions
> +   are met:
> +
> +   - Redistributions of source code must retain the above copyright
> +     notice, this list of conditions and the following disclaimer.
> +
> +   - Redistributions in binary form must reproduce the above copyright
> +     notice, this list of conditions and the following disclaimer in
> +     the documentation and/or other materials provided with the
> +     distribution.
> +
> +   - Neither the name of Intel Corporation nor the names of its
> +     contributors may be used to endorse or promote products derived
> +     from this software without specific prior written permission.
> +
> +   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
> CONTRIBUTORS
> +   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
> +   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
> +   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
> +   COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
> INDIRECT,
> +   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
> +   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
> OR
> +   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
> +   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
> CONTRACT,
> +   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
> +   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
> +   OF THE POSSIBILITY OF SUCH DAMAGE.
> +
> +==============================================
> +PMD drivers adaption for new RXTX offload APIs
> +==============================================
> +Description
> +===========
> +
> +   Adapt all the Intel drivers for the new RX/TX offload APIs.
> +   There're new RX/TX offload APIs accepted in 17.11,
> +   These new APIs are more friendly and easier to use.
> +   Currently, they co-exist with the old APIs. Some adaption work is
> +   here to make the drivers can use the old ones or the new ones.
> +   But suppose the target is to let all the NICs support the new APIs
> +   and then remove the old ones.
> +   So, in driver layer, we can begin to support the new ones and remove
> +   the old ones.
> +   Eight new commands are added.
> +
> +   Rx test commands::
> +
> +    testpmd > show port <port_id> rx_offload capabilities
> +    testpmd > show port <port_id> rx_offload configuration
> +    testmpd > port config <port_id> rx_offload <offload> on|off
> +    testpmd > port <port_id> rxq <queue_id> rx_offload <offload> on|off
> +
> +   Tx test commands::
> +
> +    testpmd > show port <port_id> tx_offload capabilities
> +    testpmd > show port <port_id> tx_offload configuration
> +    testmpd > port config <port_id> tx_offload <offload> on|off
> +    testpmd > port <port_id> txq <queue_id> tx_offload <offload> on|off
> +
> +Prerequisites
> +=============
> +
> +1. Hardware:
> +   FVL/NNT
> +
> +2. Software:
> +   dpdk: http://dpdk.org/git/dpdk
> +   scapy: http://www.secdev.org/projects/scapy/
> +
> +3. Bind the pf port to dpdk driver::
> +
> +    ./usertools/dpdk-devbind.py -b igb_uio 05:00.0 05:00.1
> +
> +4. There are different capabilities between i40e and ixgbe.
> +   So define different test cases for the two types of NIC.
> +   There is no rx_offload per_queue parameter in i40e setting now.
> +   There is no tx_offload per_queue parameter in ixgbe setting now.
> +
> +   i40e::
> +
> +    testpmd> show port 0 rx_offload capabilities
> +    Rx Offloading Capabilities of port 0 :
> +      Per Queue :
> +      Per Port  : VLAN_STRIP IPV4_CKSUM UDP_CKSUM TCP_CKSUM QINQ_STRIP
> + OUTER_IPV4_CKSUM VLAN_FILTER VLAN_EXTEND JUMBO_FRAME SCATTER
> KEEP_CRC
> +
> +    testpmd> show port 0 tx_offload capabilities
> +    Tx Offloading Capabilities of port 0 :
> +      Per Queue : MBUF_FAST_FREE
> +      Per Port  : VLAN_INSERT IPV4_CKSUM UDP_CKSUM TCP_CKSUM
> SCTP_CKSUM
> + TCP_TSO OUTER_IPV4_CKSUM QINQ_INSERT VXLAN_TNL_TSO GRE_TNL_TSO
> + IPIP_TNL_TSO GENEVE_TNL_TSO MULTI_SEGS
> +
> +   ixgbe::
> +
> +    testpmd> show port 0 rx_offload capabilities
> +    Rx Offloading Capabilities of port 0 :
> +      Per Queue : VLAN_STRIP
> +      Per Port  : IPV4_CKSUM UDP_CKSUM TCP_CKSUM TCP_LRO MACSEC_STRIP
> + VLAN_FILTER VLAN_EXTEND JUMBO_FRAME SCATTER SECURITY KEEP_CRC
> +
> +    testpmd> show port 0 tx_offload capabilities
> +    Tx Offloading Capabilities of port 0 :
> +      Per Queue :
> +      Per Port  : VLAN_INSERT IPV4_CKSUM UDP_CKSUM TCP_CKSUM
> SCTP_CKSUM
> + TCP_TSO MACSEC_INSERT MULTI_SEGS SECURITY
> +
> +
> +Rx Offload
> +==========
> +
> +Test case: Rx offload per-port setting
> +======================================
> +
> +1. Enable jumboframe when start testpmd::
> +
> +    ./testpmd -c f -n 4 -- -i --rxq=4 --txq=4 --max-pkt-len=9000
> +    testpmd> set fwd rxonly
> +    testpmd> set verbose 1
> +    testpmd> start
> +    testpmd> show port 0 rx_offload configuration
> +    Rx Offloading Configuration of port 0 :
> +      Port : JUMBO_FRAME
> +      Queue[ 0] :
> +      Queue[ 1] :
> +      Queue[ 2] :
> +      Queue[ 3] :
> +
> +2. Improve the tester ports's mtu::
> +
> +    ifconfig enp131s0f0 mtu 9200
> +    ifconfig enp131s0f1 mtu 9200
> +
> +   Send a jumboframe packet::
> +
> +    pkt1 = Ether(dst="52:54:00:00:00:01",
> src="52:00:00:00:00:00")/IP(dst="192.168.0.1", src="192.168.0.2",
> len=8981)/Raw(load="P"*8961)
> +    pkt2 = Ether(dst="52:54:00:00:00:01",
> + src="52:00:00:00:00:00")/IP(dst="192.168.0.1", src="192.168.0.3",
> + len=8981)/Raw(load="P"*8961)
> +
> +   pkt1 was distributed to queue 1, pkt2 was distributed to queue 0.
> +
> +3. Failed to disable jumboframe per_queue::
> +
> +    testpmd> port stop 0
> +    testpmd> port 0 rxq 1 rx_offload jumbo_frame off
> +    testpmd> port start 0
> +
> +   The port can be started normally, but the setting doesn't take effect.
> +   Pkt1 still can be distributed to queue 1.
> +
> +4. Succeed to disable jumboframe per_port::
> +
> +    testpmd> port stop 0
> +    testpmd> port config 0 rx_offload jumbo_frame off
> +    testpmd> port start 0
> +    testpmd> show port 0 rx_offload configuration
> +    Rx Offloading Configuration of port 0 :
> +      Port :
> +      Queue[ 0] :
> +      Queue[ 1] :
> +      Queue[ 2] :
> +      Queue[ 3] :
> +    testpmd> start
> +
> +   Send the same two packet, there is no packet received.
> +
> +5. Failed to enable jumboframe per_queue::
> +
> +    testpmd> port stop 0
> +    testpmd> port 0 rxq 1 rx_offload jumbo_frame on
> +    testpmd> port start 0
> +    Configuring Port 0 (socket 0)
> +    Ethdev port_id=0 rx_queue_id=1, new added offloads 0x800 must be within
> pre-queue offload capabilities 0x1 in rte_eth_rx_queue_setup()
> +    Fail to configure port 0 rx queues
> +
> +6. Succeed to enable jumboframe per_port::
> +
> +    testpmd> port stop 0
> +    testpmd> port config 0 rx_offload jumbo_frame on
> +    testpmd> port start 0
> +    testpmd> show port 0 rx_offload configuration
> +    Rx Offloading Configuration of port 0 :
> +      Port : JUMBO_FRAME
> +      Queue[ 0] : JUMBO_FRAME
> +      Queue[ 1] : JUMBO_FRAME
> +      Queue[ 2] : JUMBO_FRAME
> +      Queue[ 3] : JUMBO_FRAME
> +
> +   Send the same two packet, pkt1 was distributed to queue 1,
> +   pkt2 was distributed to queue 0.
> +
> +Test case: Rx offload per-port setting in command-line
> +======================================================
> +
> +1. Enable rx cksum in command-line::
> +
> +    ./testpmd -c f -n 4 -- -i --rxq=4 --txq=4 --enable-rx-cksum
> +    testpmd> show port 0 rx_offload configuration
> +    Rx Offloading Configuration of port 0 :
> +      Port : IPV4_CKSUM UDP_CKSUM TCP_CKSUM
> +      Queue[ 0] :
> +      Queue[ 1] :
> +      Queue[ 2] :
> +      Queue[ 3] :
> +
> +2. Disable the rx cksum per_port::
> +
> +    testpmd> port stop 0
> +    testpmd> port config 0 rx_offload udp_cksum off
> +    testpmd> show port 0 rx_offload configuration
> +    Rx Offloading Configuration of port 0 :
> +      Port : IPV4_CKSUM TCP_CKSUM
> +      Queue[ 0] :
> +      Queue[ 1] :
> +      Queue[ 2] :
> +      Queue[ 3] :
> +    testpmd> port start 0
> +
> +   The port can start normally.
> +   Try this step with "tcp_cksum/ipv4_cksum", the port can start normally.
> +
> +3. Enable the rx cksum per_port, all the configuration can be set successfully.
> +   The port can start normally.
> +
> +Test case: Rx offload per-port and per_queue setting
> +=====================================================
> +
> +1. Check all the rx_offload capability::
> +
> +    testpmd> show port 0 rx_offload capabilities
> +
> +2. Enable and disable per_port and per_queue capabilities.
> +
> +   Check the configuration and the port can start normally.
> +
> +Test case: NNT Rx offload per-queue setting
> +===========================================
> +
> +1. Start testpmd::
> +
> +    ./testpmd -c f -n 4 -- -i --rxq=4 --txq=4
> +    testpmd> set fwd mac
> +    testpmd> set verbose 1
> +    testpmd> show port info all
> +    VLAN offload:
> +    strip off
> +
> +2. Show the rx_offload configuration::
> +
> +    testpmd> show port 0 rx_offload configuration
> +    Rx Offloading Configuration of port 0 :
> +      Port :
> +      Queue[ 0] :
> +      Queue[ 1] :
> +      Queue[ 2] :
> +      Queue[ 3] :
> +
> +3. Enable vlan_strip per_queue::
> +
> +    testpmd> port stop 0
> +    testpmd> port 0 rxq 0 rx_offload vlan_strip on
> +    testpmd> port 0 rxq 2 rx_offload vlan_strip on
> +    testpmd> port start 0
> +    testpmd> show port 0 rx_offload configuration
> +    Rx Offloading Configuration of port 0 :
> +      Port :
> +      Queue[ 0] : VLAN_STRIP
> +      Queue[ 1] :
> +      Queue[ 2] : VLAN_STRIP
> +      Queue[ 3] :
> +    testpmd> show port info 0
> +    VLAN offload:
> +    strip on
> +
> +4. Send two packets::
> +
> +    pkt1 = Ether(dst="00:00:00:00:01:00",
> src="00:02:00:00:00:01")/Dot1Q(vlan=1)/IP(src="192.168.0.1",
> dst="192.168.0.3")/UDP(sport=33,dport=34)/Raw('x'*20)
> +    pkt2 = Ether(dst="00:00:00:00:01:00",
> + src="00:02:00:00:00:01")/Dot1Q(vlan=1)/IP(src="192.168.0.2",
> + dst="192.168.0.3")/UDP(sport=33,dport=34)/Raw('x'*20)
> +
> +   Port0 receive the two packets in queue2 and queue3.
> +   Queue2 should capture strip vlan information like "VLAN tci=0x1" and
> "PKT_RX_VLAN_STRIPPED",
> +   queue3 doesn't support vlan strip.
> +
> +   If set "set fwd mac",
> +   Check the tester port connected to port1 which receive the forwarded packet
> +   So you can check that there is vlan id in pkt1, while there is not vlan id in pkt2.
> +   The result is consistent to the DUT port receive packets.
> +
> +5. Disable vlan_strip per_queue::
> +
> +    testpmd> port stop 0
> +    testpmd> port 0 rxq 3 rx_offload vlan_strip on
> +    testpmd> port 0 rxq 2 rx_offload vlan_strip off
> +    testpmd> port start 0
> +    testpmd> show port 0 rx_offload configuration
> +    Rx Offloading Configuration of port 0 :
> +      Port :
> +      Queue[ 0] : VLAN_STRIP
> +      Queue[ 1] :
> +      Queue[ 2] :
> +      Queue[ 3] : VLAN_STRIP
> +
> +   Send the same packets,
> +   Queue3 should capture strip vlan information like "VLAN tci=0x1" and
> "PKT_RX_VLAN_STRIPPED",
> +   queue2 doesn't support vlan strip.
> +
> +6. Enable vlan_strip per_port::
> +
> +    testpmd> port stop 0
> +    testpmd> port config 0 rx_offload vlan_strip on
> +    testpmd> port start 0
> +    testpmd> show port 0 rx_offload configuration
> +    Rx Offloading Configuration of port 0 :
> +      Port : VLAN_STRIP
> +      Queue[ 0] : VLAN_STRIP
> +      Queue[ 1] : VLAN_STRIP
> +      Queue[ 2] : VLAN_STRIP
> +      Queue[ 3] : VLAN_STRIP
> +
> +  Send the two packets. queue3 and queue2 both implement vlan_strip
> +
> +7. Disable vlan_strip per_port::
> +
> +    testpmd> port stop 0
> +    testpmd> port config 0 rx_offload vlan_strip off
> +    testpmd> port start 0
> +    testpmd> show port 0 rx_offload configuration
> +    Rx Offloading Configuration of port 0 :
> +      Port :
> +      Queue[ 0] :
> +      Queue[ 1] :
> +      Queue[ 2] :
> +      Queue[ 3] :
> +
> +    testpmd> show port info 0
> +    VLAN offload:
> +    strip off
> +
> +   send the two packets. queue3 and queue2 both don't support
> + vlan_strip
> +
> +   Note 1: there is no rx_offload per_queue parameter in i40e driver,
> +   so this case is just only for ixgbe.
> +
> +   Note 2: per_port setting has higher priority than per_queue setting.
> +   If you has set an offload by port, you can't change the setting by queue.
> +
> +Tx Offload
> +==========
> +
> +Test case: Tx offload per-port setting
> +======================================
> +
> +1. Start testpmd::
> +
> +    ./testpmd -c 0x6 -n 4  -- -i --rxq=4 --txq=4 --port-topology=loop
> +    testpmd> set fwd txonly
> +    testpmd> set verbose 1
> +    testpmd> show port 0 tx_offload configuration
> +    Tx Offloading Configuration of port 0 :
> +      Port :
> +      Queue[ 0] :
> +      Queue[ 1] :
> +      Queue[ 2] :
> +      Queue[ 3] :
> +    testpmd> start
> +
> +   Tester port0 received the packet.
> +   There is no vlan infomation in the received packet.
> +
> +2. Enable vlan_insert per_port::
> +
> +    testpmd> port stop 0
> +    testpmd> port config 0 tx_offload vlan_insert on
> +    testpmd> tx_vlan set 0 1
> +    testpmd> port start 0
> +    Configuring Port 0 (socket 0)
> +    Port 0: 90:E2:BA:AC:9B:44
> +    Checking link statuses...
> +    Done
> +    testpmd> show port 0 tx_offload configuration
> +    Tx Offloading Configuration of port 0 :
> +      Port : VLAN_INSERT
> +      Queue[ 0] : VLAN_INSERT
> +      Queue[ 1] : VLAN_INSERT
> +      Queue[ 2] : VLAN_INSERT
> +      Queue[ 3] : VLAN_INSERT
> +    testpmd> start
> +
> +   Tester port0 receive the packet.
> +   There is vlan ID in the received packet.
> +
> +3. Disable vlan_insert per_port::
> +
> +    testpmd> port stop 0
> +    testpmd> port config 0 tx_offload vlan_insert off
> +    testpmd> port start 0
> +    testpmd> show port 0 tx_offload configuration
> +    Tx Offloading Configuration of port 0 :
> +      Port :
> +      Queue[ 0] :
> +      Queue[ 1] :
> +      Queue[ 2] :
> +      Queue[ 3] :
> +    testpmd> start
> +
> +   There is no vlan infomation in the received packet.
> +   The disable command takes effect.
> +
> +Test case: Tx offload per-port setting in command-line
> +======================================================
> +
> +1. Start testpmd with "--tx-offloads"::
> +
> +    ./testpmd -c 0xf -n 4  -- -i --rxq=4 --txq=4 --port-topology=loop --tx-
> offloads=0x0001
> +    testpmd> show port 0 tx_offload configuration
> +    Tx Offloading Configuration of port 0 :
> +      Port : VLAN_INSERT
> +      Queue[ 0] :
> +      Queue[ 1] :
> +      Queue[ 2] :
> +      Queue[ 3] :
> +
> +   Set the insert vlan ID::
> +
> +    testpmd> port stop 0
> +    testpmd> tx_vlan set 0 1
> +    testpmd> port start 0
> +    testpmd> set fwd txonly
> +    testpmd> start
> +
> +   Tester port0 can receive the packets with vlan ID.
> +
> +2. Disable vlan_insert per_queue::
> +
> +    testpmd> port stop 0
> +    testpmd> port 0 txq 0 tx_offload vlan_insert off
> +    testpmd> port 0 txq 1 tx_offload vlan_insert off
> +    testpmd> port 0 txq 2 tx_offload vlan_insert off
> +    testpmd> port 0 txq 3 tx_offload vlan_insert off
> +    testpmd> port start 0
> +    testpmd> show port 0 tx_offload configuration
> +    Tx Offloading Configuration of port 0 :
> +      Port : VLAN_INSERT
> +      Queue[ 0] :
> +      Queue[ 1] :
> +      Queue[ 2] :
> +      Queue[ 3] :
> +    testpmd> start
> +
> +   The tester port0 still receive packets with vlan ID.
> +   The per_port capability can't be disabled by per_queue command.
> +
> +3. Disable vlan_insert per_port::
> +
> +    testpmd> port stop 0
> +    testpmd> port config 0 tx_offload vlan_insert off
> +    testpmd> port start 0
> +    testpmd> show port 0 tx_offload configuration
> +    Tx Offloading Configuration of port 0 :
> +      Port :
> +      Queue[ 0] :
> +      Queue[ 1] :
> +      Queue[ 2] :
> +      Queue[ 3] :
> +    testpmd> start
> +
> +   The tester port receive packets without vlan ID.
> +   The per_port capability can be disabled by per_port command.
> +
> +4. Enable vlan_insert per_queue::
> +
> +    testpmd> port stop 0
> +    testpmd> port 0 txq 0 tx_offload vlan_insert on
> +    testpmd> port 0 txq 1 tx_offload vlan_insert on
> +    testpmd> port 0 txq 2 tx_offload vlan_insert on
> +    testpmd> port 0 txq 3 tx_offload vlan_insert on
> +    testpmd> show port 0 tx_offload configuration
> +    Tx Offloading Configuration of port 0 :
> +      Port :
> +      Queue[ 0] : VLAN_INSERT
> +      Queue[ 1] : VLAN_INSERT
> +      Queue[ 2] : VLAN_INSERT
> +      Queue[ 3] : VLAN_INSERT
> +    testpmd> port start 0
> +    Configuring Port 0 (socket 0)
> +    Ethdev port_id=0 tx_queue_id=0, new added offloads 0x1 must be within
> pre-queue offload capabilities 0x0 in rte_eth_tx_queue_setup()
> +    Fail to configure port 0 tx queues
> +
> +   The port failed to start.
> +   The per_port capability can't be enabled by per_queue command.
> +
> +5. Enable vlan_insert per_port::
> +
> +    testpmd> port stop 0
> +    testpmd> port config 0 tx_offload vlan_insert on
> +    testpmd> show port 0 tx_offload configuration
> +    Tx Offloading Configuration of port 0 :
> +      Port : VLAN_INSERT
> +      Queue[ 0] : VLAN_INSERT
> +      Queue[ 1] : VLAN_INSERT
> +      Queue[ 2] : VLAN_INSERT
> +      Queue[ 3] : VLAN_INSERT
> +    testpmd> port start 0
> +    testpmd> start
> +
> +   The tester port received packets with vlan ID.
> +   The per_port capability can be enabled by per_port command.
> +
> +Test case: Tx offload per-queue and per-port setting
> +====================================================
> +
> +1. Check all the tx_offload capability::
> +
> +    testpmd> show port 0 tx_offload capabilities
> +
> +2. Enable and disable per_port and per_queue capabilities.
> +
> +   Check the configuration and the port can start normally.
> +
> +Test case: FVL Tx offload per-queue setting
> +===========================================
> +
> +1. Start testpmd and get the tx_offload capability and configuration::
> +
> +    ./testpmd -c f -n 4 -- -i --rxq=4 --txq=4
> +    testpmd> show port 0 tx_offload capabilities
> +    Tx Offloading Capabilities of port 0 :
> +      Per Queue : MBUF_FAST_FREE
> +      Per Port  : VLAN_INSERT IPV4_CKSUM UDP_CKSUM TCP_CKSUM
> SCTP_CKSUM TCP_TSO OUTER_IPV4_CKSUM QINQ_INSERT VXLAN_TNL_TSO
> GRE_TNL_TSO IPIP_TNL_TSO GENEVE_TNL_TSO MULTI_SEGS
> +    testpmd> show port 0 tx_offload configuration
> +    Tx Offloading Configuration of port 0 :
> +      Port : MBUF_FAST_FREE
> +      Queue[ 0] :
> +      Queue[ 1] :
> +      Queue[ 2] :
> +      Queue[ 3] :
> +
> +2. Disable mbuf_fast_free per_port::
> +
> +    testpmd> port stop 0
> +    testpmd> port config 0 tx_offload mbuf_fast_free off
> +    testpmd> port start 0
> +    testpmd> show port 0 tx_offload configuration
> +    Tx Offloading Configuration of port 0 :
> +      Port :
> +      Queue[ 0] :
> +      Queue[ 1] :
> +      Queue[ 2] :
> +      Queue[ 3] :
> +
> +3. Enable mbuf_fast_free per_queue::
> +
> +    testpmd> port stop 0
> +    testpmd> port 0 txq 0 tx_offload mbuf_fast_free on
> +    testpmd> port 0 txq 1 tx_offload mbuf_fast_free on
> +    testpmd> port 0 txq 2 tx_offload mbuf_fast_free on
> +    testpmd> port 0 txq 3 tx_offload mbuf_fast_free on
> +    testpmd> port start 0
> +    testpmd> show port 0 tx_offload configuration
> +    Tx Offloading Configuration of port 0 :
> +      Port :
> +      Queue[ 0] : MBUF_FAST_FREE
> +      Queue[ 1] : MBUF_FAST_FREE
> +      Queue[ 2] : MBUF_FAST_FREE
> +      Queue[ 3] : MBUF_FAST_FREE
> +    testpmd> start
> +
> +   The port fwd can be started normally.
> +
> +4. Disable mbuf_fast_free per_queue::
> +
> +    testpmd> port stop 0
> +    testpmd> port 0 txq 0 tx_offload mbuf_fast_free off
> +    testpmd> port 0 txq 1 tx_offload mbuf_fast_free off
> +    testpmd> port 0 txq 2 tx_offload mbuf_fast_free off
> +    testpmd> port 0 txq 3 tx_offload mbuf_fast_free off
> +    testpmd> port start 0
> +    testpmd> show port 0 tx_offload configuration
> +    Tx Offloading Configuration of port 0 :
> +      Port :
> +      Queue[ 0] :
> +      Queue[ 1] :
> +      Queue[ 2] :
> +      Queue[ 3] :
> +
> +5. Enable mbuf_fast_free per_port::
> +
> +    testpmd> port stop 0
> +    testpmd> port config 0 tx_offload mbuf_fast_free on
> +    testpmd> port start 0
> +    testpmd> show port 0 tx_offload configuration
> +    Tx Offloading Configuration of port 0 :
> +      Port : MBUF_FAST_FREE
> +      Queue[ 0] : MBUF_FAST_FREE
> +      Queue[ 1] : MBUF_FAST_FREE
> +      Queue[ 2] : MBUF_FAST_FREE
> +      Queue[ 3] : MBUF_FAST_FREE
> +    testpmd> start
> +
> +   The port fwd can be started normally.
> +
> +   Note 1: there is no tx_offload per_queue parameter in ixgbe driver,
> +   so this case is just only for i40e.
> --
> 2.5.0
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