Get network interface’s last known physical link state.
Files
net_if.h/net_if.c
Prototype
Arguments
if_nbr
Network interface number to get last known physical link state.
p_err
Pointer to variable that will receive the return error code from this function:
NET_IF_ERR_NONE
NET_IF_ERR_INVALID_IF
NET_OS_ERR_LOCK
Returned Value
NET_IF_LINK_UP
if no errors and network interface’s last known physical link state was ‘UP’;
NET_IF_LINK_DOWN
otherwise.
Required Configuration
None.
Notes / Warnings
Use NetIF_IO_Ctrl()
with option NET_IF_IO_CTRL_LINK_STATE_GET
to get a network interface’s current physical link state.
See section Ethernet PHY Link State for more information on how to get the Link State.