net/sched: cls_flower: Use masked key when calling HW offloads

Zero bits on the mask signify a "don't care" on the corresponding bits
in key. Some HWs require those bits on the key to be zero. Since these
bits are masked anyway, it's okay to provide the masked key to all
drivers.

Fixes: 5b33f488 ('net/flower: Introduce hardware offload support')
Signed-off-by: NPaul Blakey <paulb@mellanox.com>
Reviewed-by: NRoi Dayan <roid@mellanox.com>
Acked-by: NJiri Pirko <jiri@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/sched/cls_flower.c

@@ -252,7 +252,7 @@ static int fl_hw_replace_filter(struct tcf_proto *tp,
 	offload.cookie = (unsigned long)f;
 	offload.dissector = dissector;
 	offload.mask = mask;
-	offload.key = &f->key;
+	offload.key = &f->mkey;
 	offload.exts = &f->exts;
 
 	tc->type = TC_SETUP_CLSFLOWER;