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etherdev: Avoid unnecessary byte swap in check for Ethertype
authorAlexander Duyck <alexander.h.duyck@redhat.com>
Thu, 30 Apr 2015 21:53:48 +0000 (14:53 -0700)
committerDavid S. Miller <davem@davemloft.net>
Mon, 4 May 2015 02:30:36 +0000 (22:30 -0400)
commit849b920e17a2b1e9a3c912ca960dc667d27985e8
tree022462df37208a5eba25b4ad59a2c18b846aa5c3tree | snapshot
parent82a584b7cd366511a22e37675b029cf2fb58e291commit | diff
etherdev: Avoid unnecessary byte swap in check for Ethertype

This change takes advantage of the fact that ETH_P_802_3_MIN is aligned to
512 so as a result we can actually ignore the lower 8b when comparing the
Ethertype to ETH_P_802_3_MIN.  This allows us to avoid a byte swap by simply
masking the value and comparing it to the byte swapped value for
ETH_P_802_3_MIN.

Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ethernet/eth.c diff | blob | history
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