algorithms; we only need the pubkey check disabled (and only because
pubkey algorithms are not yet integrated into the crypto_algorithm
subsystem).

iSCSI hack.

really ugly hack at present, but that doesn't hugely matter since I'm
aiming to change the interface to iSCSI devices anyway within the next
week.

in tcp_rx_data().

Clarify comments on discarding duplicate or out-of-order data.

SCSI interface not yet implemented.

implemented; should be done at some point.)

obtained via xfer_window().

xfer_window() function, which can return a scalar rather than a
boolean.

safe dropping of the netdev ref by the driver while other refs still
exist.

Add netdev_irq() method.  Net device open()/close() methods should no
longer enable or disable IRQs.

Remove rx_quota; it wasn't used anywhere and added too much complexity
to implementing correct interrupt-masking behaviour in pxe_undi.c.

not apply DHCP options in dhcp_configure_netdev().

permanent processes, rather than requiring each one to have its own
initialisation function.

via UNDI API and also by ifstat command; may be useful for debugging.