linux-网卡驱动操作

1. 查看网卡信息

lspci | grep -i 'eth'

1a:00.0 Ethernet controller: Intel Corporation Ethernet Connection X722 for 10GbE SFP+ (rev 09)
1a:00.1 Ethernet controller: Intel Corporation Ethernet Connection X722 for 10GbE SFP+ (rev 09)
1a:00.2 Ethernet controller: Intel Corporation Ethernet Connection X722 for 1GbE (rev 09)
1a:00.3 Ethernet controller: Intel Corporation Ethernet Connection X722 for 1GbE (rev 09)
3b:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
3b:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)

第一列表示的网卡编号

后面展示有2个10G，2个1G，2个扩展10G口，其中板载的是X722网卡，扩展的为82599ES网卡，通过查询得知82599ES为X520类型。

2. 安装驱动

到对应官网下载对应的tar压缩文件

tar zxvf ixgbe-5.3.3.tar.gz

进入到对应目录查看README文件，该文件叙述了支持的网卡型号以及安装方法

`rmmod ixgbe`卸载原驱动

进入src目录进行make install

ip link show查看

加载网卡驱动modprobe ixgbe或modprobe ixgbe allow_unsupported_sfp=1,1

通过ethtool eth0查看对应网卡端口

3. 查看网卡驱动版本

[root@xxx tmp]# ethtool -i eth0
driver: i40e #所使用的驱动模块名称
version: 1.5.10-k #驱动版本
firmware-version: 3.2d 0x80000b8a 255.65535.255
expansion-rom-version:
bus-info: 0000:1a:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes

4.查看模块更多信息

[root@wxxxx ~]# modinfo i40e
filename:       /lib/modules/3.10.0-123.6.1.el6.ksyun.x86_64/updates/drivers/net/ethernet/intel/i40e/i40e.ko
version:        2.4.10
license:        GPL
description:    Intel(R) 40-10 Gigabit Ethernet Connection Network Driver
author:         Intel Corporation, <e1000-devel@lists.sourceforge.net>
srcversion:     3977C21019A3C4865FF253A
alias:          pci:v00008086d0000158Bsv*sd*bc*sc*i*
alias:          pci:v00008086d0000158Asv*sd*bc*sc*i*
alias:          pci:v00008086d000037D3sv*sd*bc*sc*i*
alias:          pci:v00008086d000037D2sv*sd*bc*sc*i*
alias:          pci:v00008086d000037D1sv*sd*bc*sc*i*
alias:          pci:v00008086d000037D0sv*sd*bc*sc*i*
alias:          pci:v00008086d000037CFsv*sd*bc*sc*i*
alias:          pci:v00008086d000037CEsv*sd*bc*sc*i*
alias:          pci:v00008086d00001588sv*sd*bc*sc*i*
alias:          pci:v00008086d00001587sv*sd*bc*sc*i*
alias:          pci:v00008086d00001589sv*sd*bc*sc*i*
alias:          pci:v00008086d00001586sv*sd*bc*sc*i*
alias:          pci:v00008086d00001585sv*sd*bc*sc*i*
alias:          pci:v00008086d00001584sv*sd*bc*sc*i*
alias:          pci:v00008086d00001583sv*sd*bc*sc*i*
alias:          pci:v00008086d00001581sv*sd*bc*sc*i*
alias:          pci:v00008086d00001580sv*sd*bc*sc*i*
alias:          pci:v00008086d00001574sv*sd*bc*sc*i*
alias:          pci:v00008086d00001572sv*sd*bc*sc*i*
depends:        ptp
vermagic:       3.10.0-123.6.1.el6.ksyun.x86_64 SMP mod_unload modversions
parm:           debug:Debug level (0=none,...,16=all) (int)

5.问题

有网卡识别不了。通过dmesg查看是由于模块问题

ixgbe 0000:3b:00.1: PCI INT B -> GSI 44 (level, low) -> IRQ 44
ixgbe 0000:3b:00.1: setting latency timer to 64
ixgbe: 0000:3b:00.1: ixgbe_check_options: FCoE Offload feature enabled
ixgbe 0000:3b:00.1: failed to load because an unsupported SFP+ or QSFP module type was detected.
ixgbe 0000:3b:00.1: Reload the driver after installing a supported module.

方法：

rmmod ixgbe删除驱动

modprobe ixgbe allow_unsupported_sfp=1,1

然后ifconfig即可。