nfp: reorganize initial filling of RX rings

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Separate allocation of buffers from giving them to FW,
thanks to this it will be possible to move allocation
earlier on .ndo_open() path and reuse buffers during
runtime reconfiguration.

Similar to TX side clean up the spill of functionality
from flush to freeing the ring.  Unlike on TX side,
RX ring reset does not free buffers from the ring.
Ring reset means only that FW pointers are zeroed and
buffers on the ring must be placed in [0, cnt - 1)
positions.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jakub Kicinski 2016-04-07 19:39:40 +01:00 • committed by David S. Miller

parent 827deea9bc

commit 1934680f55

1 changed files with 78 additions and 41 deletions

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drivers/net/ethernet/netronome/nfp/nfp_net_common.c

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