The HyperNews Linux KHG Discussion Pages

## Finding net info

  Forum: Network Buffers And Memory Management
  Re: Question on network interfaces (Vijay Gupta)
  Keywords: network interface
  Date: Thu, 30 May 1996 16:12:51 GMT
  From: Alan Cox <alan.cox@linux.org>

For general scanning there is both the BSD ioctl (which is a pain as you must guess the largest size), or /proc/net/dev (just cat it). For the state of an interface you use a struct ifreq filled in and do SIOCGIFFLAGS and test IFF_RUNNING and IFF_UP