介绍

ethtool是Linux里查询或配置网络驱动和设备的重要工具。

使用概要：
ethtool ethx //查询ethx网口基本设置，其中 x 是对应网卡的编号，如eth0、eth1等等
ethtool –h //显示ethtool的命令帮助(help)
ethtool –i ethX    //查询ethX网口的相关信息
ethtool –d ethX   //查询ethX网口注册性信息
ethtool –r ethX    //重置ethX网口到自适应模式
ethtool –S ethX   //查询ethX网口收发包统计
ethtool –s ethX [speed 10|100|1000] [duplex half|full]  [autoneg on|off]        //设置网口速率10/100/1000M、设置网口半/全双工、设置网口是否自协商

ethtool -E eth0 magic 0x10798086 offset 0x10 value 0x1A //修改网卡EEPROM内容（0x1079 网卡device id , 0x8086网卡verdor id ）

ethtool -e eth0 //dump网卡EEPROM内容

ethtool在Linux里的帮助信息如下：

$ ethtool -h
ethtool version 5.10
Usage:ethtool [ FLAGS ] DEVNAME       Display standard information about deviceethtool [ FLAGS ] -s|--change DEVNAME   Change generic options[ speed %d ][ duplex half|full ][ port tp|aui|bnc|mii|fibre|da ][ mdix auto|on|off ][ autoneg on|off ][ advertise %x[/%x] | mode on|off ... [--] ][ phyad %d ][ xcvr internal|external ][ wol %d[/%d] | p|u|m|b|a|g|s|f|d... ][ sopass %x:%x:%x:%x:%x:%x ][ msglvl %d[/%d] | type on|off ... [--] ][ master-slave master-preferred|slave-preferred|master-force|slave-force ]ethtool [ FLAGS ] -a|--show-pause DEVNAME       Show pause optionsethtool [ FLAGS ] -A|--pause DEVNAME    Set pause options[ autoneg on|off ][ rx on|off ][ tx on|off ]ethtool [ FLAGS ] -c|--show-coalesce DEVNAME    Show coalesce optionsethtool [ FLAGS ] -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 [ FLAGS ] -g|--show-ring DEVNAME        Query RX/TX ring parametersethtool [ FLAGS ] -G|--set-ring DEVNAME Set RX/TX ring parameters[ rx N ][ rx-mini N ][ rx-jumbo N ][ tx N ]ethtool [ FLAGS ] -k|--show-features|--show-offload DEVNAME     Get state of protocol offload and other featuresethtool [ FLAGS ] -K|--features|--offload DEVNAME       Set protocol offload and other featuresFEATURE on|off ...ethtool [ FLAGS ] -i|--driver DEVNAME   Show driver informationethtool [ FLAGS ] -d|--register-dump DEVNAME    Do a register dump[ raw on|off ][ file FILENAME ]ethtool [ FLAGS ] -e|--eeprom-dump DEVNAME      Do a EEPROM dump[ raw on|off ][ offset N ][ length N ]ethtool [ FLAGS ] -E|--change-eeprom DEVNAME    Change bytes in device EEPROM[ magic N ][ offset N ][ length N ][ value N ]ethtool [ FLAGS ] -r|--negotiate DEVNAME        Restart N-WAY negotiationethtool [ FLAGS ] -p|--identify DEVNAME Show visible port identification (e.g. blinking)[ TIME-IN-SECONDS ]ethtool [ FLAGS ] -t|--test DEVNAME     Execute adapter self test[ online | offline | external_lb ]ethtool [ FLAGS ] -S|--statistics DEVNAME       Show adapter statisticsethtool [ FLAGS ] --phy-statistics DEVNAME      Show phy statisticsethtool [ FLAGS ] -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 [context %d] |rule %d ]ethtool [ FLAGS ] -N|-U|--config-nfc|--config-ntuple DEVNAME    Configure Rx network flow classification options or rulesrx-flow-hash tcp4|udp4|ah4|esp4|sctp4|tcp6|udp6|ah6|esp6|sctp6 m|v|t|s|d|f|n|r... [context %d] |flow-type ether|ip4|tcp4|udp4|sctp4|ah4|esp4|ip6|tcp6|udp6|ah6|esp6|sctp6[ 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 IP-ADDRESS [m IP-ADDRESS] ][ dst-ip IP-ADDRESS [m IP-ADDRESS] ][ tos %d [m %x] ][ tclass %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 ] | [ vf %d queue %d ][ context %d ][ loc %d]] |delete %dethtool [ FLAGS ] -T|--show-time-stamping DEVNAME       Show time stamping capabilitiesethtool [ FLAGS ] -x|--show-rxfh-indir|--show-rxfh DEVNAME      Show Rx flow hash indirection table and/or RSS hash key[ context %d ]ethtool [ FLAGS ] -X|--set-rxfh-indir|--rxfh DEVNAME    Set Rx flow hash indirection table and/or RSS hash key[ context %d|new ][ equal N | weight W0 W1 ... | default ][ hkey %x:%x:%x:%x:%x:.... ][ hfunc FUNC ][ delete ]ethtool [ FLAGS ] -f|--flash DEVNAME    Flash firmware image from the specified file to a region on the deviceFILENAME [ REGION-NUMBER-TO-FLASH ]ethtool [ FLAGS ] -P|--show-permaddr DEVNAME    Show permanent hardware addressethtool [ FLAGS ] -w|--get-dump DEVNAME Get dump flag, data[ data FILENAME ]ethtool [ FLAGS ] -W|--set-dump DEVNAME Set dump flag of the deviceNethtool [ FLAGS ] -l|--show-channels DEVNAME    Query Channelsethtool [ FLAGS ] -L|--set-channels DEVNAME     Set Channels[ rx N ][ tx N ][ other N ][ combined N ]ethtool [ FLAGS ] --show-priv-flags DEVNAME     Query private flagsethtool [ FLAGS ] --set-priv-flags DEVNAME      Set private flagsFLAG on|off ...ethtool [ FLAGS ] -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 [ FLAGS ] --show-eee DEVNAME    Show EEE settingsethtool [ FLAGS ] --set-eee DEVNAME     Set EEE settings[ eee on|off ][ advertise %x ][ tx-lpi on|off ][ tx-timer %d ]ethtool [ FLAGS ] --set-phy-tunable DEVNAME     Set PHY tunable[ downshift on|off [count N] ][ fast-link-down on|off [msecs N] ][ energy-detect-power-down on|off [msecs N] ]ethtool [ FLAGS ] --get-phy-tunable DEVNAME     Get PHY tunable[ downshift ][ fast-link-down ][ energy-detect-power-down ]ethtool [ FLAGS ] --get-tunable DEVNAME Get tunable[ rx-copybreak ][ tx-copybreak ][ pfc-precention-tout ]ethtool [ FLAGS ] --set-tunable DEVNAME Set tunable[ rx-copybreak N][ tx-copybreak N][ pfc-precention-tout N]ethtool [ FLAGS ] --reset DEVNAME       Reset components[ flags %x ][ mgmt ][ mgmt-shared ][ irq ][ irq-shared ][ dma ][ dma-shared ][ filter ][ filter-shared ][ offload ][ offload-shared ][ mac ][ mac-shared ][ phy ][ phy-shared ][ ram ][ ram-shared ][ ap ][ ap-shared ][ dedicated ][ all ]ethtool [ FLAGS ] --show-fec DEVNAME    Show FEC settingsethtool [ FLAGS ] --set-fec DEVNAME     Set FEC settings[ encoding auto|off|rs|baser|llrs [...]]ethtool [ FLAGS ] -Q|--per-queue DEVNAME        Apply per-queue command.
The supported sub commands include --show-coalesce, --coalesce             [queue_mask %x] SUB_COMMANDethtool [ FLAGS ] --cable-test DEVNAME  Perform a cable testethtool [ FLAGS ] --cable-test-tdr DEVNAME      Print cable test time domain reflectrometery data[ first N ][ last N ][ step N ][ pair N ]ethtool [ FLAGS ] --show-tunnels DEVNAME        Show NIC tunnel offload informationethtool [ FLAGS ] -h|--help             Show this helpethtool [ FLAGS ] --version             Show version numberethtool --monitor               Show kernel notifications( [ --all ]| -s | --change| -s | --change| -s | --change| -s | --change| -k | --show-features | --show-offload | -K | --features | --offload| --show-priv-flags | --set-priv-flags| -g | --show-ring | -G | --set-ring| -l | --show-channels | -L | --set-channels| -c | --show-coalesce | -C | --coalesce| -a | --show-pause | -A | --pause| --show-eee | --set-eee| --cable-test| --cable-test-tdr )[ DEVNAME | * ]FLAGS:--debug MASK    turn on debugging messages--json          enable JSON output format (not supported by all commands)-I|--include-statistics         request device statistics related to the command (not supported by all commands)

ethtool在Linux的框架

用户空间和内核空间上下交互的流程如下：

Linux内核部分

Linux内核里struct net_device结构体成员ethtool_ops结构体如下：

struct ethtool_ops {int (*get_settings)(struct net_device *, struct ethtool_cmd *);/* 通常使用 %get_link_ksettings/%set_link_ksettings API。获取多项设备设置，比如以太网Link设置。*/int (*set_settings)(struct net_device *, struct ethtool_cmd *);/* 通常使用 %get_link_ksettings/%set_link_ksettings API。设置多项设备设置，包括以太网Link设置。*/void    (*get_drvinfo)(struct net_device *, struct ethtool_drvinfo *);/* 报告驱动/设备信息。只能设置@driver, @version, @fw_version and @bus_info这些域。如果没有实现，@driver 和 @bus_info 域会根据netdev的父设备填充。  */int (*get_regs_len)(struct net_device *);/* 获取get_regs需要的字符串长度。 */void    (*get_regs)(struct net_device *, struct ethtool_regs *, void *);/* 获取设备寄存器 */void    (*get_wol)(struct net_device *, struct ethtool_wolinfo *);/* 报告是否Wake-on-Lan启用 */int (*set_wol)(struct net_device *, struct ethtool_wolinfo *);/* 关闭或开启Wake-on-Lan功能 */u32 (*get_msglevel)(struct net_device *);/* 报告驱动消息等级 */void    (*set_msglevel)(struct net_device *, u32);/* 设置驱动消息等级 */int (*nway_reset)(struct net_device *);/* 重协商 */u32 (*get_link)(struct net_device *);/* 报告是否物理Link状态是UP的。*/int (*get_eeprom_len)(struct net_device *);/* 读取EEPROM有效地址范围 */int (*get_eeprom)(struct net_device *,struct ethtool_eeprom *, u8 *);/* 从EEPROM设备中读取数据 */int (*set_eeprom)(struct net_device *,struct ethtool_eeprom *, u8 *);/* 向EEPROM设备中写入数据 */int (*get_coalesce)(struct net_device *, struct ethtool_coalesce *);/* 获取中断聚合参数 */int (*set_coalesce)(struct net_device *, struct ethtool_coalesce *);/* 设置中断聚合参数 */void    (*get_ringparam)(struct net_device *,struct ethtool_ringparam *);/* 报告ring大小 */int (*set_ringparam)(struct net_device *,struct ethtool_ringparam *);/* 设置ring大小 */void    (*get_pauseparam)(struct net_device *,struct ethtool_pauseparam*);/* 报告暂停参数 */int (*set_pauseparam)(struct net_device *,struct ethtool_pauseparam*);/* 设置暂停参数 */void    (*self_test)(struct net_device *, struct ethtool_test *, u64 *);/* 运行指定的自测试 */void    (*get_strings)(struct net_device *, u32 stringset, u8 *);/* 返回字符串集合来描述请求的目标 */int (*set_phys_id)(struct net_device *, enum ethtool_phys_id_state);/* 标识物理设备 */void    (*get_ethtool_stats)(struct net_device *,struct ethtool_stats *, u64 *);/* 返回有关设备的扩展统计信息 */int (*begin)(struct net_device *);/* 所有其他操作之前被调用的函数 */void    (*complete)(struct net_device *);/* 所有其他操作之后被调用的函数，除了begin */u32 (*get_priv_flags)(struct net_device *);/* 报告驱动特有的特性标记 */int (*set_priv_flags)(struct net_device *, u32);/* 设置驱动特有的特性标记 */int (*get_sset_count)(struct net_device *, int);/* 获取@get_strings会写入的字符串个数 */int (*get_rxnfc)(struct net_device *,struct ethtool_rxnfc *, u32 *rule_locs);/* 获取RX流分类规则 */int (*set_rxnfc)(struct net_device *, struct ethtool_rxnfc *);/* 设置RX流分类规则 */int (*flash_device)(struct net_device *, struct ethtool_flash *);/* 将固件镜像写入flash存储空间 */int (*reset)(struct net_device *, u32 *);/* 重置设备 */u32 (*get_rxfh_indir_size)(struct net_device *);/* 获取RX流摘要key的大小 */int (*get_rxfh_indir)(struct net_device *, u32 *);/**/int (*set_rxfh_indir)(struct net_device *, const u32 *);/**/void    (*get_channels)(struct net_device *, struct ethtool_channels *);/**/int (*set_channels)(struct net_device *, struct ethtool_channels *);/**/int (*get_dump_flag)(struct net_device *, struct ethtool_dump *);/**/int (*get_dump_data)(struct net_device *,struct ethtool_dump *, void *);/**/int (*set_dump)(struct net_device *, struct ethtool_dump *);/**/int (*get_ts_info)(struct net_device *, struct ethtool_ts_info *);/**/int     (*get_module_info)(struct net_device *,struct ethtool_modinfo *);/* 获取可插拔模块内eeprom包含的大小和类型 */int     (*get_module_eeprom)(struct net_device *,struct ethtool_eeprom *, u8 *);/* 从可插拔模块内获取eeprom信息 */int (*get_eee)(struct net_device *, struct ethtool_eee *);/**/int (*set_eee)(struct net_device *, struct ethtool_eee *);/**//* RHEL SPECIFIC** The following padding has been inserted before ABI freeze to* allow extending the structure while preserve ABI. Feel free* to replace reserved slots with required structure field* additions of your backport.*/RH_KABI_USE_P(1, u32    (*get_rxfh_key_size)(struct net_device *))RH_KABI_USE_P(2, int    (*get_rxfh)(struct net_device *, u32 *indir,u8 *key, u8 *hfunc))RH_KABI_USE_P(3, int    (*set_rxfh)(struct net_device *,const u32 *indir, const u8 *key,const u8 hfunc))RH_KABI_USE_P(4, int    (*get_tunable)(struct net_device *,const struct ethtool_tunable *,void *))RH_KABI_USE_P(5, int    (*set_tunable)(struct net_device *,const struct ethtool_tunable *,const void *))RH_KABI_USE_P(6, int    (*get_per_queue_coalesce)(struct net_device *,u32,struct ethtool_coalesce *))RH_KABI_USE_P(7, int    (*set_per_queue_coalesce)(struct net_device *,u32,struct ethtool_coalesce *))RH_KABI_USE_P(8, int    (*get_link_ksettings)(struct net_device *,struct ethtool_link_ksettings *))RH_KABI_USE_P(9, int    (*set_link_ksettings)(struct net_device *,const struct ethtool_link_ksettings *))RH_KABI_USE_P(10,int    (*get_fecparam)(struct net_device *,struct ethtool_fecparam *))RH_KABI_USE_P(11,int    (*set_fecparam)(struct net_device *,struct ethtool_fecparam *))RH_KABI_USE_P(12,int    (*get_rxfh_context)(struct net_device *, u32 *indir, u8 *key,u8 *hfunc, u32 rss_context))RH_KABI_USE_P(13,int    (*set_rxfh_context)(struct net_device *, const u32 *indir,const u8 *key, const u8 hfunc,u32 *rss_context, bool delete))RH_KABI_RESERVE_P(14)RH_KABI_RESERVE_P(15)RH_KABI_RESERVE_P(16)
};/* include/linux/ethtool.h */

以Intel网卡驱动igb举例，在pci probe函数里调用igb_set_ethtool_ops(netdev)，给ethtool_ops结构体里的成员函数赋值。

1. module_init(igb_init_module);2. ret = pci_register_driver(&igb_driver);3. static int igb_probe(struct pci_dev *, const struct pci_device_id *)
{......igb_set_ethtool_ops(netdev);......
}
/* linux-3.10.0-957.el7/drivers/net/ethernet/intel/igb/igb_main.c */static int igb_get_module_eeprom(struct net_device *netdev,struct ethtool_eeprom *ee, u8 *data)
{struct igb_adapter *adapter = netdev_priv(netdev);struct e1000_hw *hw = &adapter->hw;u32 status = 0;u16 *dataword;u16 first_word, last_word;int i = 0;if (ee->len == 0)return -EINVAL;first_word = ee->offset >> 1;last_word = (ee->offset + ee->len - 1) >> 1;dataword = kmalloc(sizeof(u16) * (last_word - first_word + 1),GFP_KERNEL);if (!dataword)return -ENOMEM;/* Read EEPROM block, SFF-8079/SFF-8472, word at a time */for (i = 0; i < last_word - first_word + 1; i++) {status = igb_read_phy_reg_i2c(hw, (first_word + i) * 2,&dataword[i]);if (status) {/* Error occurred while reading module */kfree(dataword);return -EIO;}be16_to_cpus(&dataword[i]);}memcpy(data, (u8 *)dataword + (ee->offset & 1), ee->len);kfree(dataword);return 0;
}static const struct ethtool_ops igb_ethtool_ops = {.get_drvinfo            = igb_get_drvinfo,.get_regs_len           = igb_get_regs_len,.get_regs               = igb_get_regs,.get_wol                = igb_get_wol,.set_wol                = igb_set_wol,.get_msglevel           = igb_get_msglevel,.set_msglevel           = igb_set_msglevel,.nway_reset             = igb_nway_reset,.get_link               = igb_get_link,.get_eeprom_len         = igb_get_eeprom_len,.get_eeprom             = igb_get_eeprom,.set_eeprom             = igb_set_eeprom,.get_ringparam          = igb_get_ringparam,.set_ringparam          = igb_set_ringparam,.get_pauseparam         = igb_get_pauseparam,.set_pauseparam         = igb_set_pauseparam,.self_test              = igb_diag_test,.get_strings            = igb_get_strings,.set_phys_id            = igb_set_phys_id,.get_sset_count         = igb_get_sset_count,.get_ethtool_stats      = igb_get_ethtool_stats,.get_coalesce           = igb_get_coalesce,.set_coalesce           = igb_set_coalesce,.get_ts_info            = igb_get_ts_info,.get_rxnfc              = igb_get_rxnfc,.set_rxnfc              = igb_set_rxnfc,.get_eee                = igb_get_eee,.set_eee                = igb_set_eee,.get_module_info        = igb_get_module_info,.get_module_eeprom      = igb_get_module_eeprom,.get_rxfh_indir_size    = igb_get_rxfh_indir_size,.get_rxfh               = igb_get_rxfh,.set_rxfh               = igb_set_rxfh,.get_channels           = igb_get_channels,.set_channels           = igb_set_channels,.get_priv_flags         = igb_get_priv_flags,.set_priv_flags         = igb_set_priv_flags,.begin                  = igb_ethtool_begin,.complete               = igb_ethtool_complete,.get_link_ksettings     = igb_get_link_ksettings,.set_link_ksettings     = igb_set_link_ksettings,
};void igb_set_ethtool_ops(struct net_device *netdev)
{netdev->ethtool_ops = &igb_ethtool_ops;
}
/* linux-3.10.0-957.el7/drivers/net/ethernet/intel/igb/igb_ethtool.c */

ethtool应用程序

github地址

#ifndef TEST_ETHTOOL
int send_ioctl(struct cmd_context *ctx, void *cmd)
{ctx->ifr.ifr_data = cmd;return ioctl(ctx->fd, SIOCETHTOOL, &ctx->ifr);
}
#endifstatic int do_getmodule(struct cmd_context *ctx)
{struct ethtool_modinfo modinfo;struct ethtool_eeprom *eeprom;u32 geeprom_offset = 0;u32 geeprom_length = -1;int geeprom_changed = 0;int geeprom_dump_raw = 0;int geeprom_dump_hex = 0;int err;struct cmdline_info cmdline_geeprom[] = {{ "offset", CMDL_U32, &geeprom_offset, NULL },{ "length", CMDL_U32, &geeprom_length, NULL },{ "raw", CMDL_BOOL, &geeprom_dump_raw, NULL },{ "hex", CMDL_BOOL, &geeprom_dump_hex, NULL },};parse_generic_cmdline(ctx, &geeprom_changed,cmdline_geeprom, ARRAY_SIZE(cmdline_geeprom));if (geeprom_dump_raw && geeprom_dump_hex) {printf("Hex and raw dump cannot be specified together\n");return 1;}modinfo.cmd = ETHTOOL_GMODULEINFO;err = send_ioctl(ctx, &modinfo);if (err < 0) {perror("Cannot get module EEPROM information");return 1;}if (geeprom_length == -1)geeprom_length = modinfo.eeprom_len;if (modinfo.eeprom_len < geeprom_offset + geeprom_length)geeprom_length = modinfo.eeprom_len - geeprom_offset;eeprom = calloc(1, sizeof(*eeprom)+geeprom_length);if (!eeprom) {perror("Cannot allocate memory for Module EEPROM data");return 1;}eeprom->cmd = ETHTOOL_GMODULEEEPROM;eeprom->len = geeprom_length;eeprom->offset = geeprom_offset;err = send_ioctl(ctx, eeprom);if (err < 0) {perror("Cannot get Module EEPROM data");free(eeprom);return 1;}/** SFF-8079 EEPROM layout contains the memory available at A0 address on* the PHY EEPROM.* SFF-8472 defines a virtual extension of the EEPROM, where the* microcontroller on the SFP/SFP+ generates a page at the A2 address,* which contains data relative to optical diagnostics.* The current kernel implementation returns a blob, which contains:*  - ETH_MODULE_SFF_8079 => The A0 page only.*  - ETH_MODULE_SFF_8472 => The A0 and A2 page concatenated.*/if (geeprom_dump_raw) {fwrite(eeprom->data, 1, eeprom->len, stdout);} else {if (eeprom->offset != 0  ||(eeprom->len != modinfo.eeprom_len)) {geeprom_dump_hex = 1;} else if (!geeprom_dump_hex) {switch (modinfo.type) {
#ifdef ETHTOOL_ENABLE_PRETTY_DUMPcase ETH_MODULE_SFF_8079:sff8079_show_all(eeprom->data);break;case ETH_MODULE_SFF_8472:sff8079_show_all(eeprom->data);sff8472_show_all(eeprom->data);break;
#endifdefault:geeprom_dump_hex = 1;break;}}if (geeprom_dump_hex)dump_hex(stdout, eeprom->data,eeprom->len, eeprom->offset);}free(eeprom);return 0;
}static const struct option {const char *opts;int want_device;int (*func)(struct cmd_context *);char *help;char *opthelp;
} args[] = {{ "-i|--driver", 1, do_gdrv, "Show driver information" },{ "-m|--dump-module-eeprom|--module-info", 1, do_getmodule,"Query/Decode Module EEPROM information and optical diagnostics if available","     [ raw on|off ]\n""     [ hex on|off ]\n""     [ offset N ]\n""     [ length N ]\n" },{}
};/* ethtool.c */

ethtool应用程序在获取可插拔模块eeprom信息的时候，根据命令行-m参数，调用do_getmodule函数，在具体代码实现过程描述为，通过ioclt socket套接字下发获取命令，得到eeprom->data后通过sff8079_show_all(eeprom->data);和sff8472_show_all(eeprom->data);把EEPROM信息打印出来。

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