Retrieve an extension identified by a key (string) from a port.
#include <wfdqnx/wfdcfg.h>
const struct wfdcfg_keyval* wfdcfg_port_get_extension( const struct wfdcfg_port *port, const char *key)
A handle to the port whose extension(s) you are retrieving
Identifier of the extension to retrieve
The extension is valid between the time you create and destroy the port.
Pointer to wfdcfg_keyval if the extension was found; NULL if the extension was not found. It's considered acceptable for a port to have no extensions.