Merge branch '1GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/t

nguy/next-queue

Tony Nguyen says:

====================
1GbE Intel Wired LAN Driver Updates 2021-07-16

Vinicius Costa Gomes says:

Add support for steering traffic to specific RX queues using Flex Filters.

As the name implies, Flex Filters are more flexible than using
Layer-2, VLAN or MAC address filters, one of the reasons is that they
allow "AND" operations more easily, e.g. when the user wants to steer
some traffic based on the source MAC address and the packet ethertype.

Future work include adding support for offloading tc-u32 filters to
the hardware.

The series is divided as follows:

Patch 1/5, add the low level primitives for configuring Flex filters.

Patch 2/5 and 3/5, allow ethtool to manage Flex filters.

Patch 4/5, when specifying filters that have multiple predicates, use
Flex filters.

Patch 5/5, Adds support for exposing the i225 LEDs using the LED subsystem.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 41 insertions, 7 deletions

diff --git a/drivers/net/ethernet/intel/igc/igc.h b/drivers/net/ethernet/intel/igc/igc.h
index 5901ed9fb545..2df0fd2b9ecf 100644
--- a/drivers/net/ethernet/intel/igc/igc.h
+++ b/drivers/net/ethernet/intel/igc/igc.h
@@ -13,6 +13,7 @@
 #include <linux/ptp_clock_kernel.h>
 #include <linux/timecounter.h>
 #include <linux/net_tstamp.h>
+#include <linux/leds.h>
 
 #include "igc_hw.h"
 
@@ -33,6 +34,8 @@ void igc_ethtool_set_ops(struct net_device *);
 #define IGC_N_PEROUT	2
 #define IGC_N_SDP	4
 
+#define MAX_FLEX_FILTER			32
+
 enum igc_mac_filter_type {
 	IGC_MAC_FILTER_TYPE_DST = 0,
 	IGC_MAC_FILTER_TYPE_SRC
@@ -237,8 +240,17 @@ struct igc_adapter {
 		struct timespec64 start;
 		struct timespec64 period;
 	} perout[IGC_N_PEROUT];
+
+	/* LEDs */
+	struct mutex led_mutex;
+	struct led_classdev led0;
+	struct led_classdev led1;
+	struct led_classdev led2;
 };
 
+#define led_to_igc(ldev, led)                          \
+	container_of(ldev, struct igc_adapter, led)
+
 void igc_up(struct igc_adapter *adapter);
 void igc_down(struct igc_adapter *adapter);
 int igc_open(struct net_device *netdev);
@@ -476,18 +488,28 @@ struct igc_q_vector {
 };
 
 enum igc_filter_match_flags {
-	IGC_FILTER_FLAG_ETHER_TYPE =	0x1,
-	IGC_FILTER_FLAG_VLAN_TCI   =	0x2,
-	IGC_FILTER_FLAG_SRC_MAC_ADDR =	0x4,
-	IGC_FILTER_FLAG_DST_MAC_ADDR =	0x8,
+	IGC_FILTER_FLAG_ETHER_TYPE =	BIT(0),
+	IGC_FILTER_FLAG_VLAN_TCI   =	BIT(1),
+	IGC_FILTER_FLAG_SRC_MAC_ADDR =	BIT(2),
+	IGC_FILTER_FLAG_DST_MAC_ADDR =	BIT(3),
+	IGC_FILTER_FLAG_USER_DATA =	BIT(4),
+	IGC_FILTER_FLAG_VLAN_ETYPE =	BIT(5),
 };
 
 struct igc_nfc_filter {
 	u8 match_flags;
 	u16 etype;
+	__be16 vlan_etype;
 	u16 vlan_tci;
 	u8 src_addr[ETH_ALEN];
 	u8 dst_addr[ETH_ALEN];
+	u8 user_data[8];
+	u8 user_mask[8];
+	u8 flex_index;
+	u8 rx_queue;
+	u8 prio;
+	u8 immediate_irq;
+	u8 drop;
 };
 
 struct igc_nfc_rule {
@@ -495,12 +517,24 @@ struct igc_nfc_rule {
 	struct igc_nfc_filter filter;
 	u32 location;
 	u16 action;
+	bool flex;
 };
 
-/* IGC supports a total of 32 NFC rules: 16 MAC address based,, 8 VLAN priority
- * based, and 8 ethertype based.
+/* IGC supports a total of 32 NFC rules: 16 MAC address based, 8 VLAN priority
+ * based, 8 ethertype based and 32 Flex filter based rules.
  */
-#define IGC_MAX_RXNFC_RULES		32
+#define IGC_MAX_RXNFC_RULES		64
+
+struct igc_flex_filter {
+	u8 index;
+	u8 data[128];
+	u8 mask[16];
+	u8 length;
+	u8 rx_queue;
+	u8 prio;
+	u8 immediate_irq;
+	u8 drop;
+};
 
 /* igc_desc_unused - calculate if we have unused descriptors */
 static inline u16 igc_desc_unused(const struct igc_ring *ring)