ethtool工具用法学习

ethtool是用于查询和设置网卡参数的工具。
http://blog.chinaunix.net/uid-24830931-id-3651481.html
ethtool version 3.9
Usage:
        ethtool DEVNAME Display standard information about device
      

点击(此处)折叠或打开

1. 查看设备的基本信息，可以查看到网卡当前速度设置等重要信息
3. ethtool p2p1
4. Settings for p2p1:
5. Supported ports: [ FIBRE ] 光纤
6. Supported link modes: 10000baseT/Full 万兆网卡
7. Supports auto-negotiation: No 是否支持自动协商
8. Advertised link modes: 10000baseT/Full 万兆全双工
9. Advertised pause frame use: No 停止帧
10. Advertised auto-negotiation: No 自动协商
11. Speed: 10000Mb/s 当前速度
12. Duplex: Full 全双工
13. Port: FIBRE 光口
14. PHYAD: 0
15. Transceiver: external
16. Auto-negotiation: off
17. Supports Wake-on: d
18. Wake-on: d
19. Current message level: 0x00000007 (7)
20. Link detected: yes

        ethtool -s|--change DEVNAME     Change generic options
                [ speed %d ]  设置网卡速度
                [ duplex half|full ] 设置半双工/全双工
                [ port tp|aui|bnc|mii|fibre ]
                [ mdix auto|on|off ]
                [ autoneg on|off ] 自动协商
                [ advertise %x ]
                [ phyad %d ]
                [ xcvr internal|external ]
                [ wol p|u|m|b|a|g|s|d... ]
                [ sopass %x:%x:%x:%x:%x:%x ]
                [ msglvl %d | msglvl type on|off ... ]
        ethtool -a|--show-pause DEVNAME Show pause options 查看pause？选项
        ethtool -A|--pause DEVNAME      Set pause options 设置pause选项
                [ autoneg on|off ]
                [ rx on|off ]
                [ tx on|off ]
        ethtool -c|--show-coalesce DEVNAME      Show coalesce options
        ethtool -C|--coalesce DEVNAME   Set coalesce options
                [adaptive-rx on|off]
                [adaptive-tx on|off]
                [rx-usecs N]
                [rx-frames N]
                [rx-usecs-irq N]
                [rx-frames-irq N]
                [tx-usecs N]
                [tx-frames N]
                [tx-usecs-irq N]
                [tx-frames-irq N]
                [stats-block-usecs N]
                [pkt-rate-low N]
                [rx-usecs-low N]
                [rx-frames-low N]
                [tx-usecs-low N]
                [tx-frames-low N]
                [pkt-rate-high N]
                [rx-usecs-high N]
                [rx-frames-high N]
                [tx-usecs-high N]
                [tx-frames-high N]
                [sample-interval N]
        ethtool -g|--show-ring DEVNAME  Query RX/TX ring parameters
        ethtool -G|--set-ring DEVNAME   Set RX/TX ring parameters
                [ rx N ]
                [ rx-mini N ]
                [ rx-jumbo N ]
                [ tx N ]
        ethtool -k|--show-features|--show-offload DEVNAME       Get state of protocol offload and other features
       

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1. ./ethtool -k p2p1 tso, gro, gso, lro等设置，往往引发lb各种悲剧
2. Features for p2p1:
3. rx-checksumming: on
4. tx-checksumming: on
5. scatter-gather: on
6. tcp-segmentation-offload: on
7. udp-fragmentation-offload: off
8. generic-segmentation-offload: on
9. generic-receive-offload: on
10. large-receive-offload: on
11. rx-vlan-offload: on
12. tx-vlan-offload: on
13. ntuple-filters: off
14. receive-hashing: off

        ethtool -K|--features|--offload DEVNAME Set protocol offload and other features 上述查看工具对应的设置工具
                FEATURE on|off ...
        ethtool -i|--driver DEVNAME     Show driver information  驱动信息，查看驱动版本信息的简单方法
        ethtool -d|--register-dump DEVNAME      Do a register dump
                [ raw on|off ]
                [ file FILENAME ]
        ethtool -e|--eeprom-dump DEVNAME        Do a EEPROM dump
                [ raw on|off ]
                [ offset N ]
                [ length N ]
        ethtool -E|--change-eeprom DEVNAME      Change bytes in device EEPROM
                [ magic N ]
                [ offset N ]
                [ length N ]
                [ value N ]
        ethtool -r|--negotiate DEVNAME  Restart N-WAY negotiation
        ethtool -p|--identify DEVNAME   Show visible port identification (e.g. blinking)
               [ TIME-IN-SECONDS ]
        ethtool -t|--test DEVNAME       Execute adapter self test
               [ online | offline | external_lb ]
        ethtool -S|--statistics DEVNAME Show adapter statistics
       

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1. ./ethtool -S p2p1 各种统计数据，精确到队列级别，对于流量统计非常有用
2. NIC statistics:
3. rx_packets: 1027588268
4. tx_packets: 6
5. rx_bytes: 61655296080
6. tx_bytes: 468
7. rx_errors: 0
8. tx_errors: 0
9. rx_dropped: 0
10. tx_dropped: 0
11. multicast: 0
12. collisions: 0
13. rx_over_errors: 0
14. rx_crc_errors: 0
15. rx_frame_errors: 0
16. rx_fifo_errors: 0
17. rx_missed_errors: 605876
18. tx_aborted_errors: 0
19. tx_carrier_errors: 0
20. tx_fifo_errors: 0
21. tx_heartbeat_errors: 0
22. rx_pkts_nic: 4406116906
23. tx_pkts_nic: 6
24. rx_bytes_nic: 264850404288
25. tx_bytes_nic: 492
26. lsc_int: 10
27. tx_busy: 0
28. non_eop_descs: 0
29. broadcast: 0
30. rx_no_buffer_count: 0
31. tx_timeout_count: 0
32. tx_restart_queue: 0
33. rx_long_length_errors: 0
34. rx_short_length_errors: 0
35. tx_flow_control_xon: 58915
36. rx_flow_control_xon: 0
37. tx_flow_control_xoff: 187078
38. rx_flow_control_xoff: 0
39. rx_csum_offload_errors: 0
40. alloc_rx_page_failed: 0
41. alloc_rx_buff_failed: 0
42. lro_aggregated: 0
43. lro_flushed: 0
44. lro_recycled: 0
45. rx_no_dma_resources: 3116649674
46. hw_rsc_aggregated: 0
47. hw_rsc_flushed: 0
48. fdir_match: 0
49. fdir_miss: 4145384775
50. fdir_overflow: 0
51. fcoe_bad_fccrc: 0
52. fcoe_last_errors: 0
53. rx_fcoe_dropped: 0
54. rx_fcoe_packets: 0
55. rx_fcoe_dwords: 0
56. fcoe_noddp: 0
57. fcoe_noddp_ext_buff: 0
58. tx_fcoe_packets: 0
59. tx_fcoe_dwords: 0
60. os2bmc_rx_by_bmc: 0
61. os2bmc_tx_by_bmc: 0
62. os2bmc_tx_by_host: 0
63. os2bmc_rx_by_host: 0
64. tx_queue_0_packets: 0
65. tx_queue_0_bytes: 0
66. tx_queue_1_packets: 0
67. tx_queue_1_bytes: 0
68. tx_queue_2_packets: 0
69. tx_queue_2_bytes: 0
70. tx_queue_3_packets: 0
71. tx_queue_3_bytes: 0
72. tx_queue_4_packets: 0
73. tx_queue_4_bytes: 0
74. tx_queue_5_packets: 0
75. tx_queue_5_bytes: 0
76. tx_queue_6_packets: 0
77. tx_queue_6_bytes: 0
78. tx_queue_7_packets: 0
79. tx_queue_7_bytes: 0
80. tx_queue_8_packets: 0
81. tx_queue_8_bytes: 0
82. tx_queue_9_packets: 0
83. tx_queue_9_bytes: 0
84. tx_queue_10_packets: 0
85. tx_queue_10_bytes: 0
86. tx_queue_11_packets: 6
87. tx_queue_11_bytes: 468
88. tx_queue_12_packets: 0
89. tx_queue_12_bytes: 0
90. tx_queue_13_packets: 0
91. tx_queue_13_bytes: 0
92. tx_queue_14_packets: 0
93. tx_queue_14_bytes: 0
94. tx_queue_15_packets: 0
95. tx_queue_15_bytes: 0
96. rx_queue_0_packets: 64222674
97. rx_queue_0_bytes: 3853360440
98. rx_queue_1_packets: 64231179
99. rx_queue_1_bytes: 3853870740
100. rx_queue_2_packets: 64222781
101. rx_queue_2_bytes: 3853366860
102. rx_queue_3_packets: 64224913
103. rx_queue_3_bytes: 3853494780
104. rx_queue_4_packets: 64218247
105. rx_queue_4_bytes: 3853094820
106. rx_queue_5_packets: 64227989
107. rx_queue_5_bytes: 3853679340
108. rx_queue_6_packets: 64225507
109. rx_queue_6_bytes: 3853530420
110. rx_queue_7_packets: 64227581
111. rx_queue_7_bytes: 3853654860
112. rx_queue_8_packets: 64221803
113. rx_queue_8_bytes: 3853308180
114. rx_queue_9_packets: 64232646
115. rx_queue_9_bytes: 3853958760
116. rx_queue_10_packets: 64222700
117. rx_queue_10_bytes: 3853362000
118. rx_queue_11_packets: 64223776
119. rx_queue_11_bytes: 3853426560
120. rx_queue_12_packets: 64224798
121. rx_queue_12_bytes: 3853487880
122. rx_queue_13_packets: 64218435
123. rx_queue_13_bytes: 3853106100
124. rx_queue_14_packets: 64216023
125. rx_queue_14_bytes: 3852961380
126. rx_queue_15_packets: 64227344
127. rx_queue_15_bytes: 3853640640

        ethtool -n|-u|--show-nfc|--show-ntuple DEVNAME  Show Rx network flow classification options or rules
                [ rx-flow-hash tcp4|udp4|ah4|esp4|sctp4|tcp6|udp6|ah6|esp6|sctp6 |
                  rule %d ] 查看flow director的各种配置
        ethtool -N|-U|--config-nfc|--config-ntuple DEVNAME      Configure Rx network flow classification options or rules
                rx-flow-hash tcp4|udp4|ah4|esp4|sctp4|tcp6|udp6|ah6|esp6|sctp6 m|v|t|s|d|f|n|r... |
                flow-type ether|ip4|tcp4|udp4|sctp4|ah4|esp4
                        [ src %x:%x:%x:%x:%x:%x [m %x:%x:%x:%x:%x:%x] ]
                        [ dst %x:%x:%x:%x:%x:%x [m %x:%x:%x:%x:%x:%x] ]
                        [ proto %d [m %x] ]
                        [ src-ip %d.%d.%d.%d [m %d.%d.%d.%d] ]
                        [ dst-ip %d.%d.%d.%d [m %d.%d.%d.%d] ]
                        [ tos %d [m %x] ]
                        [ l4proto %d [m %x] ]
                        [ src-port %d [m %x] ]
                        [ dst-port %d [m %x] ]
                        [ spi %d [m %x] ]
                        [ vlan-etype %x [m %x] ]
                        [ vlan %x [m %x] ]
                        [ user-def %x [m %x] ]
                        [ dst-mac %x:%x:%x:%x:%x:%x [m %x:%x:%x:%x:%x:%x] ]
                        [ action %d ]
                        [ loc %d]] |设置flow director 规则
                delete %d
        ethtool -T|--show-time-stamping DEVNAME Show time stamping capabilities
        ethtool -x|--show-rxfh-indir DEVNAME    Show Rx flow hash indirection
        ethtool -X|--set-rxfh-indir DEVNAME     Set Rx flow hash indirection
                equal N | weight W0 W1 ...
        ethtool -f|--flash DEVNAME      Flash firmware image from the specified file to a region on the device
               FILENAME [ REGION-NUMBER-TO-FLASH ]
        ethtool -P|--show-permaddr DEVNAME      Show permanent hardware address
        ethtool -w|--get-dump DEVNAME   Get dump flag, data
                [ data FILENAME ]
        ethtool -W|--set-dump DEVNAME   Set dump flag of the device
                N
        ethtool -l|--show-channels DEVNAME      Query Channels
        ethtool -L|--set-channels DEVNAME       Set Channels
               [ rx N ]
               [ tx N ]
               [ other N ]
               [ combined N ]
        ethtool --show-priv-flags DEVNAME       Query private flags
        ethtool --set-priv-flags DEVNAME        Set private flags
                FLAG on|off ...
        ethtool -m|--dump-module-eeprom|--module-info DEVNAME   Query/Decode Module EEPROM information and optical diagnostics if available
                [ raw on|off ]
                [ hex on|off ]
                [ offset N ]
                [ length N ]
        ethtool --show-eee DEVNAME      Show EEE settings
        ethtool --set-eee DEVNAME       Set EEE settings
                [ eee on|off ]
                [ advertise %x ]
                [ tx-lpi on|off ]
                [ tx-timer %d ]
        ethtool -h|--help               Show this help
        ethtool --version               Show version number