前言
Linux modinfo命令用于显示kernel模块的信息，确切讲，会显示kernel模块的对象文件，以及显示该模块的相关信息。
语法
root@node243:~# modinfo -h
Usage:
modinfo [options] filename [args]
Options:
-a, --author Print only 'author'
-d, --description Print only 'description'
-l, --license Print only 'license'
-p, --parameters Print only 'parm'
-n, --filename Print only 'filename'
-0, --null Use \0 instead of \n
-F, --field=FIELD Print only provided FIELD
-k, --set-version=VERSION Use VERSION instead of `uname -r`
-b, --basedir=DIR Use DIR as filesystem root for /lib/modules
-V, --version Show version
-h, --help Show this help
root@node243:~#
实践
今天碰到需要给技嘉设备（型号：S451-3R0）更新系统里的QLogic driver，技嘉工程师提供的文件名称为server_driver_qlogic_lan_8.18.16.0.zip，从这里可以看出版本是8.18.16.0，问题来了，我要如何知道，当前系统里QLogic版本是多少？如果版本比技嘉工程师提供的高，自然就不需要更新这个驱动；如果比这个低，那就需要了。
查看系统里QLogic driver在内核中加载的模块名称
使用的lspci -vvv命令，下面只截取片段信息:
3f:00.0 Ethernet controller: QLogic Corp. Device 8070 (rev 02)
Subsystem: Gigabyte Technology Co., Ltd Device 1000
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 411
Region 0: Memory at b7d20000 (64-bit, prefetchable) [size=128K]
Region 2: Memory at b7c00000 (64-bit, prefetchable) [size=1M]
Region 4: Memory at b7d50000 (64-bit, prefetchable) [size=64K]
Expansion ROM at b8680000 [disabled] [size=512K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [50] MSI: Enable- Count=1/8 Maskable+ 64bit+
Address: 0000000000000000 Data: 0000
Masking: 00000000 Pending: 00000000
Capabilities: [70] Express (v2) Endpoint, MSI 00
DevCap: MaxPayload 512 bytes, PhantFunc 0, Latency L0s unlimited, L1 unlimited
ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd- ExtTag+ PhantFunc- AuxPwr- NoSnoop+ FLReset-
MaxPayload 256 bytes, MaxReadReq 512 bytes
DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend-
LnkCap: Port #0, Speed 8GT/s, Width x8, ASPM not supported, Exit Latency L0s unlimited, L1 <8us
ClockPM+ Surprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 8GT/s, Width x8, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR+, OBFF Via message/WAKE#
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-
Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete+, EqualizationPhase1+
EqualizationPhase2+, EqualizationPhase3+, LinkEqualizationRequest-
Capabilities: [b0] MSI-X: Enable+ Count=129 Masked-
Vector table: BAR=4 offset=00000000
PBA: BAR=4 offset=00001000
Capabilities: [d0] Vital Product Data
Product Name: QLogic FastLinQ QL41212H 25GbE Adapter
Read-only fields:
[PN] Part number: AH2010406-01 02
[SN] Serial number: AFE1702F15357
[V0] Vendor specific: FFV8.18.01
[RV] Reserved: checksum good, 4 byte(s) reserved
End
Capabilities: [100 v2] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
Capabilities: [148 v1] Virtual Channel
Caps: LPEVC=0 RefClk=100ns PATEntryBits=1
Arb: Fixed- WRR32- WRR64- WRR128-
Ctrl: ArbSelect=Fixed
Status: InProgress-
VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=01
Status: NegoPending- InProgress-
Capabilities: [168 v1] Device Serial Number 00-00-00-00-00-00-00-00
Capabilities: [178 v1] Power Budgeting <?>
Capabilities: [188 v1] Alternative Routing-ID Interpretation (ARI)
ARICap: MFVC- ACS-, Next Function: 1
ARICtl: MFVC- ACS-, Function Group: 0
Capabilities: [198 v1] #19
Capabilities: [1f8 v1] Transaction Processing Hints
Interrupt vector mode supported
Device specific mode supported
Steering table in MSI-X table
Capabilities: [284 v1] Latency Tolerance Reporting
Max snoop latency: 0ns
Max no snoop latency: 0ns
Capabilities: [28c v1] Vendor Specific Information: ID=0002 Rev=3 Len=100 <?>
Capabilities: [38c v1] Vendor Specific Information: ID=0001 Rev=1 Len=038 <?>
Capabilities: [3c4 v1] #1f
Capabilities: [3d0 v1] Vendor Specific Information: ID=0003 Rev=1 Len=054 <?>
Capabilities: [424 v1] #15
Kernel driver in use: qede
从上面信息看到，qlogic driver，被kernel加载使用的叫qede
查看qede版本
root@node150:~# lsmod | grep qede
qede 143360 0
qed 880640 1 qede
vxlan 40960 2 i40e,qede
ptp 20480 2 i40e,qede
root@node150:~# modinfo qede
filename: /lib/modules/4.1.49-server/updates/dkms/qede.ko
version: 8.33.9.0
license: GPL
description: QLogic FastLinQ 4xxxx Ethernet Driver
srcversion: AFABFD8F281A74624107FE7
alias: pci:v00001077d00008090sv*sd*bc*sc*i*
alias: pci:v00001077d00008070sv*sd*bc*sc*i*
alias: pci:v00001077d00001664sv*sd*bc*sc*i*
alias: pci:v00001077d00001656sv*sd*bc*sc*i*
alias: pci:v00001077d00001654sv*sd*bc*sc*i*
alias: pci:v00001077d00001644sv*sd*bc*sc*i*
alias: pci:v00001077d00001636sv*sd*bc*sc*i*
alias: pci:v00001077d00001666sv*sd*bc*sc*i*
alias: pci:v00001077d00001634sv*sd*bc*sc*i*
depends: ptp,vxlan,qed
vermagic: 4.1.49-server SMP mod_unload modversions
parm: debug: Default debug msglevel (uint)
parm: int_mode: Force interrupt mode other than MSI-X:(1 INT#x; 2 MSI) (uint)
parm: gro_disable: Force HW gro disable:(0 enable (default); 1 disable) (uint)
parm: err_flags_override: Bitmap for disabling or forcing the actions taken according to the respective error flags bits (uint)
parm: rdma_lag_support: RDMA Bonding support enable - preview mode (uint)
root@node150:~#
从lsmod吐出信息可以看到，当前系统中QLogic driver版本是8.33.9.0，高于技嘉工程师提供的版本，所有不需要跟新。
