最近需要修改linux下的網路引數，遂將linux下用於控制網路引數的 ioctl常用函式記錄一下，使用的時候注意使包裹對應的標頭檔案，其中sockios.**件包含所有的操作命令字，
int main(int argc, char *ar**)
int error;
//struct ethtool_link_settings linkset;
struct ethtool_value edata;
edata.cmd = 0x0000000a;
ifr.ifr_data = (caddr_t) &edata;
if(ioctl(fd,siocethtool, &ifr) == -1)
if(edata.data == 0)
struct ethtool_cmd cmdget;
= ethtool_glinksettings;
cmdget.cmd = ethtool_gset;
= (caddr_t)&linkset;
ifr.ifr_data = (caddr_t)&cmdget;
if(ioctl(fd,siocethtool,&ifr) < 0)
qdebug("the eth0 speed is %d mb/s",cmdget.speed);
qdebug("the etho duplex is %d",cmdget.duplex);
//struct ethtool_cmd cmdset;
cmdget.cmd = ethtool_sset;
cmdget.speed = 10;
cmdget.duplex = 0;
cmdget.autoneg = 1;
ifr.ifr_data = (caddr_t)&cmdget;
if(ioctl(fd,siocethtool,&ifr) < 0)
memset(&cmdget,0,sizeof(cmdget));
cmdget.cmd = ethtool_gset;
ifr.ifr_data = (caddr_t)&cmdget;
if(ioctl(fd,siocethtool,&ifr) < 0)
qdebug("the eth0 speed is %d mb/s",cmdget.speed);
qdebug("the etho duplex is %d",cmdget.duplex);
qdebug("the etho autoneg is %d",cmdget.autoneg);
sleep(1);
if(ioctl(fd,siocethtool,&ifr) < 0)
qdebug("the eth0 speed is %d mb/s",cmdget.speed);
qdebug("the etho duplex is %d",cmdget.duplex);
//set hwaddr
struct ifreq ifr;
char * pmacaddr[6]=;
ifr.ifr_hwaddr.sa_data[0] = pmacaddr[0];
ifr.ifr_hwaddr.sa_data[1] = pmacaddr[1];
ifr.ifr_hwaddr.sa_data[2] = pmacaddr[2];
ifr.ifr_hwaddr.sa_data[3] = pmacaddr[3];
ifr.ifr_hwaddr.sa_data[4] = pmacaddr[4];
ifr.ifr_hwaddr.sa_data[5] = pmacaddr[5];
ifr.ifr_hwaddr.sa_family = arphrd_ether;
if(ioctl(s, siocsifhwaddr, &ifr) == -1)
//add multicast addr
struct ifreq ifr1;
ifr1.ifr_hwaddr.sa_data[0] = 0x01;
ifr1.ifr_hwaddr.sa_data[1] = 0x80;
ifr1.ifr_hwaddr.sa_data[2] = 0xc2;
ifr1.ifr_hwaddr.sa_data[3] = 0x00;
ifr1.ifr_hwaddr.sa_data[4] = 0x00;
ifr1.ifr_hwaddr.sa_data[5] = 0x0e;
ioctl(sockfd, siocaddmulti, &ifr);
//delete multicast addr
struct ifreq ifr2;
ifr2.ifr_hwaddr.sa_data[0] = 0x01;
ifr2.ifr_hwaddr.sa_data[1] = 0x80;
ifr2.ifr_hwaddr.sa_data[2] = 0xc2;
ifr2.ifr_hwaddr.sa_data[3] = 0x00;
ifr2.ifr_hwaddr.sa_data[4] = 0x00;
ifr2.ifr_hwaddr.sa_data[5] = 0x0e;
ioctl(sockfd, siocdelmulti, &ifr);
return a.exec();}
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