Changeset 5068f3f9 in rtems for c/src/lib/libbsp/powerpc/beatnik

2010-02-09 Till Straumann <strauman@…>

• network/if_mve/mv643xx_eth.c: Fixed alignment attribute in descriptor declaration. Not the pointers to the descriptors have to be aligned but the descriptors themselves (didn't cause problems but caused unnecessary holes in 'private' struct).

FIX: Added more robustness when number of available TX descriptors
drops to zero. (This can e.g., happen if the link goes bad causing
packets to stall in the FIFO.) At the following points the transmitter
is explicitly (re-)started:

o when link comes up and number of available TXDs is zero the

TX is restarted.

o on a failed attempt to send data due to lack of TXDs the

TX is restarted if swiping the TX ring doesn't yield any
buffers (i.e., if the # of available buffers is still zero
after the swipe).