net_protocol_walk - step through the list of registered network protocols
net_data_t *net_protocol_walk(net_data_t net);
illumos DDI specific (illumos DDI).
The net_protocol_walk() function walks through all of the network
protocols that have been registered with this interface. The initial call to
net_protocol_walk() should be made by passing in NULL as the
value for net. When this function returns NULL, the end of the
list has been reached.
A caller of net_protocol_walk() is required to walk through
the entire list of network protocols, until NULL is returned or, when
finished with using the value returned, pass it into a call to
The net_protocol_walk() function returns NULL when the end of the
list is returned. Otherwise, it returns a non-NULL value as a token for
being passed into other function calls within this interface.
The net_protocol_walk() function may be called from user, kernel, or
See attributes(5) for descriptions of the following attributes: