2.4.0-testx: who calls ip_rcv (in ipv4/ip_input.c)?

[Noah Romer <nromer@xxxxxxxx>]

I'm trying to trace the path of packets through the networking layers after
they're handed off from the driver via netif_rx. I see where they're placed in
the input_pkt_queue in netif_rx, and taken off of the queue in net_rx_action (I
thought I'd traced them to functions in p8022.c and psnap.c, but it doesn't
appear that either of those files get compiled on my system, so I guess not).
Then I found where the packets get handled in ip_rcv and then ip_rcv_finish,
but I haven't been able to figure out who calls ip_rcv.

Thanks.