linux 判断网卡类型有线无线

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 <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <netpacket/packet.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <arpa/inet.h>
#include <err.h>

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 <net/if.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

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; i<num; ++i)
{
    printf("wlan if name %s\n", ifname[i]);
}

/* 注释部分直接打印出网卡列表未存储到变量中
struct if_nameindex *if_ni, *i;

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++)
   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 */

linux 判断网卡类型 有线 无线

猜你喜欢

linux 判断网卡类型有线无线