ice: Enable RX queue selection using skbedit action

This patch uses TC skbedit queue_mapping action to support
forwarding packets to a device queue. Such filters with action
forward to queue will be the highest priority switch filter in
HW.
Example:
$ tc filter add dev ens4f0 protocol ip ingress flower\
  dst_ip 192.168.1.12 ip_proto tcp dst_port 5001\
  action skbedit queue_mapping 5 skip_sw

The above command adds an ingress filter, incoming packets
qualifying the match will be accepted into queue 5. The queue
number is in decimal format.

Refactored ice_add_tc_flower_adv_fltr() to consolidate code with
action FWD_TO_VSI and FWD_TO QUEUE.

Reviewed-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Reviewed-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: Amritha Nambiar <amritha.nambiar@intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index 001500afc4a6..d75c8d11f867 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -137,6 +137,21 @@
  */
 #define ICE_BW_KBPS_DIVISOR		125
 
+/* Default recipes have priority 4 and below, hence priority values between 5..7
+ * can be used as filter priority for advanced switch filter (advanced switch
+ * filters need new recipe to be created for specified extraction sequence
+ * because default recipe extraction sequence does not represent custom
+ * extraction)
+ */
+#define ICE_SWITCH_FLTR_PRIO_QUEUE	7
+/* prio 6 is reserved for future use (e.g. switch filter with L3 fields +
+ * (Optional: IP TOS/TTL) + L4 fields + (optionally: TCP fields such as
+ * SYN/FIN/RST))
+ */
+#define ICE_SWITCH_FLTR_PRIO_RSVD	6
+#define ICE_SWITCH_FLTR_PRIO_VSI	5
+#define ICE_SWITCH_FLTR_PRIO_QGRP	ICE_SWITCH_FLTR_PRIO_VSI
+
 /* Macro for each VSI in a PF */
 #define ice_for_each_vsi(pf, i) \
 	for ((i) = 0; (i) < (pf)->num_alloc_vsi; (i)++)