linux 判断网卡类型 有线 无线 |
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查看所有网络接口 ls /sys/class/net/要区分无线网卡则可以在 /sys/class/net/${ifname}/ 下面找 phy80211 或者 wireless 文件夹，无线网卡目录下才存在这些文件夹 通过C函数来查看： #include #include #include #include #include #include #include #include #include #include #include int device_get_hwinfo(int fd, char* ifname) { struct ifreq ifr; memset(&ifr, 0, sizeof(ifr)); strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); if (ioctl(fd, SIOCGIFHWADDR, &ifr) < 0) { err(1, "Could not get arptype"); return -1; } return ifr.ifr_hwaddr.sa_family; //this value } int main(int argc, char* argv[]) { int fd, if_type = -1; char *if_name = "eth0"; fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); if (fd < 0) { printf("Could not create packet socket! Please run horst as root!\n"); return -1; } if_type = device_get_hwinfo(fd, if_name); printf("%s type is %d\n", if_name, if_type); return 0; }得到网卡列表： #include #include #include #include #include int get_if_name(char ifstr[][32]) { struct if_nameindex *if_ni, *i; int num = 0; if_ni = if_nameindex(); if (if_ni == NULL) { perror("if_nameindex"); exit(EXIT_FAILURE); } for (i = if_ni; ! (i->if_index == 0 && i->if_name == NULL); i++) { if(strstr(i->if_name,"eth") != NULL) //比较网卡名得到有线网卡，不可靠，得到全部就注释掉此行 { strcpy(ifstr[num], i->if_name); ++num; } else printf("%u: %s\n", i->if_index, i->if_name); } if_freenameindex(if_ni); return num; } /** * 通过interface name 调用iocontrol查询网卡是否是无线网卡，执行该程序需要引用wireless.h, * 如果编译时报错 删除其中的"__user" 或者 直接定义为空，这是内核中用到的用户空间属性 */ int if_is_wlif(const char * ifname) { int skfd, ret = 0; struct iwreq wrq; /* Set device name */ strncpy(wrq.ifr_name, ifname, IFNAMSIZ); skfd = socket(AF_INET, SOCK_DGRAM, 0); if(skfd < 0) return ret; /* Get wireless name */ ret = ioctl(skfd, SIOCGIWNAME, &wrq); close(skfd); /* If no wireless name : no wireless extensions */ if(ret < 0) return 0; else return 1; } int main(int argc, char *argv[]) { char ifname[10][32]; int num, i; num = get_if_name(ifname); printf("wlan num %d\n", num); for( i=0; iif_index == 0 && i->if_name == NULL); i++) printf("%u: %s\n", i->if_index, i->if_name); if_freenameindex(if_ni); */ exit(EXIT_SUCCESS); }查看设备下的网卡可以通过筛选类型值来判断网卡类型 cat /sys/class/net/eth0/type 1网卡类型的值是 1 无线网卡 Managed和 Master模式的值也是 1，当是 Monitor模式时值才为 802 或 803 设备类型值列表： /* ARP protocol HARDWARE identifiers. */ #define ARPHRD_NETROM 0 /* from KA9Q: NET/ROM pseudo */ #define ARPHRD_ETHER 1 /* Ethernet 10Mbps */ #define ARPHRD_EETHER 2 /* Experimental Ethernet */ #define ARPHRD_AX25 3 /* AX.25 Level 2 */ #define ARPHRD_PRONET 4 /* PROnet token ring */ #define ARPHRD_CHAOS 5 /* Chaosnet */ #define ARPHRD_IEEE802 6 /* IEEE 802.2 Ethernet/TR/TB */ #define ARPHRD_ARCNET 7 /* ARCnet */ #define ARPHRD_APPLETLK 8 /* APPLEtalk */ #define ARPHRD_DLCI 15 /* Frame Relay DLCI */ #define ARPHRD_ATM 19 /* ATM */ #define ARPHRD_METRICOM 23 /* Metricom STRIP (new IANA id) */ #define ARPHRD_IEEE1394 24 /* IEEE 1394 IPv4 - RFC 2734 */ #define ARPHRD_EUI64 27 /* EUI-64 */ #define ARPHRD_INFINIBAND 32 /* InfiniBand */ /* Dummy types for non ARP hardware */ #define ARPHRD_SLIP 256 #define ARPHRD_CSLIP 257 #define ARPHRD_SLIP6 258 #define ARPHRD_CSLIP6 259 #define ARPHRD_RSRVD 260 /* Notional KISS type */ #define ARPHRD_ADAPT 264 #define ARPHRD_ROSE 270 #define ARPHRD_X25 271 /* CCITT X.25 */ #define ARPHRD_HWX25 272 /* Boards with X.25 in firmware */ #define ARPHRD_CAN 280 /* Controller Area Network */ #define ARPHRD_PPP 512 #define ARPHRD_CISCO 513 /* Cisco HDLC */ #define ARPHRD_HDLC ARPHRD_CISCO #define ARPHRD_LAPB 516 /* LAPB */ #define ARPHRD_DDCMP 517 /* Digital's DDCMP protocol */ #define ARPHRD_RAWHDLC 518 /* Raw HDLC */ #define ARPHRD_TUNNEL 768 /* IPIP tunnel */ #define ARPHRD_TUNNEL6 769 /* IP6IP6 tunnel */ #define ARPHRD_FRAD 770 /* Frame Relay Access Device */ #define ARPHRD_SKIP 771 /* SKIP vif */ #define ARPHRD_LOOPBACK 772 /* Loopback device */ #define ARPHRD_LOCALTLK 773 /* Localtalk device */ #define ARPHRD_FDDI 774 /* Fiber Distributed Data Interface */ #define ARPHRD_BIF 775 /* AP1000 BIF */ #define ARPHRD_SIT 776 /* sit0 device - IPv6-in-IPv4 */ #define ARPHRD_IPDDP 777 /* IP over DDP tunneller */ #define ARPHRD_IPGRE 778 /* GRE over IP */ #define ARPHRD_PIMREG 779 /* PIMSM register interface */ #define ARPHRD_HIPPI 780 /* High Performance Parallel Interface */ #define ARPHRD_ASH 781 /* Nexus 64Mbps Ash */ #define ARPHRD_ECONET 782 /* Acorn Econet */ #define ARPHRD_IRDA 783 /* Linux-IrDA */ /* ARP works differently on different FC media .. so */ #define ARPHRD_FCPP 784 /* Point to point fibrechannel */ #define ARPHRD_FCAL 785 /* Fibrechannel arbitrated loop */ #define ARPHRD_FCPL 786 /* Fibrechannel public loop */ #define ARPHRD_FCFABRIC 787 /* Fibrechannel fabric */ /* 787->799 reserved for fibrechannel media types */ #define ARPHRD_IEEE802_TR 800 /* Magic type ident for TR */ #define ARPHRD_IEEE80211 801 /* IEEE 802.11 */ #define ARPHRD_IEEE80211_PRISM 802 /* IEEE 802.11 + Prism2 header */ #define ARPHRD_IEEE80211_RADIOTAP 803 /* IEEE 802.11 + radiotap header */ #define ARPHRD_IEEE802154 804 #define ARPHRD_PHONET 820 /* PhoNet media type */ #define ARPHRD_PHONET_PIPE 821 /* PhoNet pipe header */ #define ARPHRD_CAIF 822 /* CAIF media type */ #define ARPHRD_VOID 0xFFFF /* Void type, nothing is known */ #define ARPHRD_NONE 0xFFFE /* zero header length */ /* ARP protocol opcodes. */ #define ARPOP_REQUEST 1 /* ARP request */ #define ARPOP_REPLY 2 /* ARP reply */ #define ARPOP_RREQUEST 3 /* RARP request */ #define ARPOP_RREPLY 4 /* RARP reply */ #define ARPOP_InREQUEST 8 /* InARP request */ #define ARPOP_InREPLY 9 /* InARP reply */ #define ARPOP_NAK 10 /* (ATM)ARP NAK */
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