shutdown_api/change_linkspeed: port config speed is invalid

https://bugs.dpdk.org/show_bug.cgi?id=693

Bug ID: 693
Summary: [dpdk-21.05] shutdown_api/change_linkspeed: port
config speed is invalid
Product: DPDK
Version: unspecified
Hardware: x86
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: testpmd
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---

Environment
DPDK version: 21.05-rc1: 1b593b9c832e9b284cc59665fe662242a3fc1daf
OS: CentOS Stream release 8/4.18.0-277.el8.x86_64
Compiler: gcc (GCC) 8.4.1
Hardware platform: Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz. NIC hardware: Ethernet Controller I225-LM 15f2 driver：igc 0.0.1-k（foxville）

Reproduce Step:
1.bind port on vfio-pci
#usertools/dpdk-devbind.py --force --bind=vfio-pci 0000:81:00.0

2. launch test-pmd #x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1,2 -n 4 -a 0000:81:00.0
--file-prefix=dpdk_23328_20210427094637 -- -i --portmask=0x1
--port-topology=loop

3.tester: ethtool ens803
Settings for ens803:

        Supported ports: [  ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
                                2500baseT/Full

4.testpmd> set promisc all off
testpmd> port stop all
testpmd>port config 0 speed 100 duplex full
testpmd>port start all

5.testpmd>show port info 0
********************* Infos for port 0 ********************* MAC address: 00:A0:C9:00:00:00
Device name: 0000:81:00.0
Driver name: net_igc
Firmware-version: 1.3, 0x800000c9
Devargs:
Connect to socket: 1
memory allocation on the socket: 1
Link status: up
Link speed: 2.5 Gbps
Link duplex: full-duplex

Expected Result: Link speed should be 100 Mbps.

Regression
Is this issue a regression: (Y/N) Y
Version the regression was introduced: Specify git id if known. First bad commit:
commit 312312e928c71cb6b45aeaab2b421d059897dd07
Author: Huisong Li <[email protected]>
Date: Wed Apr 14 11:02:05 2021 +0800

app/testpmd: fix bitmap of link speeds when force speed

Currently, when the user sets force link speed through 'link_speeds', bit(0) of 'link_speeds' is not set to 1(ETH_LINK_SPEED_FIXED), which conflicts with the definition.

function")
Cc: [email protected]

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