get physical media type of ethernet adapter using c++ on linux

[tankjunior]

I am using this code to get some info about ethernet adapters.

for(i = 0; i < nInterfaces; i++)
    {
        struct ifreq *item = &ifr[i];

        if(ioctl(sck, SIOCGIFFLAGS, &ifr[i]) >= 0)
        {
            if (!(ifr[i].ifr_flags & IFF_LOOPBACK))
            {
                printf("Name : %s\n", item->ifr_name);
                printf("Media : %s\n", (ifr->ifr_flags)&IFF_UP ? "Up" : "Down");
                printf("Bandwidth : %d\n", item->ifr_bandwidth);
            }
        }
    }

How do I determine the media type of adatper? For example wireless, bluetooth, ethernet(802.3) etc.?


Prashant

[saulius2]

I guess you could use SIOCGIFHWADDR to get sockaddr.sa_family as it is described here: netdevice - Man Pages

But by looking at Linux/include/linux/if_arp.h , I don't see any reference to Bluetooth here. Closest matches are probably these:

ARPHRD_IEEE80211
ARPHRD_IEEE80211_RADIOTAP
ARPHRD_ETHER

Have you considered running ethtool on a BT iface? Does it identify the type correctly?