net: Busy polling should ignore sender CPUs
authorAlexander Duyck <alexander.h.duyck@intel.com>
Fri, 24 Mar 2017 17:07:53 +0000 (10:07 -0700)
committerDavid S. Miller <davem@davemloft.net>
Sat, 25 Mar 2017 03:49:30 +0000 (20:49 -0700)
commit545cd5e5ec5477c325e4098b6fd21213dceda408
tree43a2aaa0f59d8721b8ab25d0f52749f798f42122
parentdcb421f4279f362c3eef7479616c76588b74d782
net: Busy polling should ignore sender CPUs

This patch is a cleanup/fix for NAPI IDs following the changes that made it
so that sender_cpu and napi_id were doing a better job of sharing the same
location in the sk_buff.

One issue I found is that we weren't validating the napi_id as being valid
before we started trying to setup the busy polling.  This change corrects
that by using the MIN_NAPI_ID value that is now used in both allocating the
NAPI IDs, as well as validating them.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/busy_poll.h
net/core/dev.c