Locates an interface based on a complete address.
#include <sys/types.h>
#include <sys/errno.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/af.h>struct ifaddr * ifa_ifwithaddr ( addr)
struct sockaddr *addr;
| Item | Description |
|---|---|
| addr | Specifies a complete address. |
The ifa_ifwithaddr kernel service is passed a complete address and locates the corresponding interface. If successful, the ifa_ifwithaddr service returns the ifaddr structure associated with that address.
The ifa_ifwithaddr kernel service can be called from either the process or interrupt environment.
If successful, the ifa_ifwithaddr service returns the corresponding ifaddr structure associated with the address it is passed. If no interface is found, the ifa_ifwithaddr service returns a null pointer.
To locate an interface based on a complete address, invoke the ifa_ifwithaddr kernel service as follows:
ifa_ifwithaddr((struct sockaddr *)&ipaddr);