nfp: remove buggy RX buffer length validation
authorJakub Kicinski <jakub.kicinski@netronome.com>
Sat, 16 Apr 2016 10:25:53 +0000 (11:25 +0100)
committerDavid S. Miller <davem@davemloft.net>
Sun, 17 Apr 2016 02:34:40 +0000 (22:34 -0400)
commit180012dc05e565260a25696767c8f5b2df5fc50e
tree89bbc49d2998219b78575cb17f818705b89bacd2
parent2db221cd444bf356243c57b653b6bf84c3491806
nfp: remove buggy RX buffer length validation

Meaning of data_len and meta_len RX WB descriptor fields is
slightly confusing.  Add a comment with a diagram clarifying
the layout.  Also remove the buffer length validation:
(a) it's imprecise for static rx-offsets; (b) if firmware
is buggy enough to DMA past the end of the buffer
WARN_ON_ONCE() doesn't seem like a strong enough response.
skb_put() will do the checking for us anyway.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/netronome/nfp/nfp_net_common.c