qede: Fix out-of-bound fastpath memory access

qede: Fix out-of-bound fastpath memory access

Orabug: 25477939

Driver allocates a shadow array for transmitted SKBs with X entries;
That means valid indices are {0,...,X - 1}. [X == 8191]
Problem is the driver also uses X as a mask for a
producer/consumer in order to choose the right entry in the
array which allows access to entry X which is out of bounds.

To fix this, simply allocate X + 1 entries in the shadow array.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 087892d29b75c025086d99b29d385a3dac0169fc)
Signed-off-by: Brian Maly <brian.maly@oracle.com>