Merge branch 'bnxt_en-next'

Michael Chan says:

====================
bnxt_en: Updates.

Various changes including updated firmware interface, improved TX ring
allocation scheme, improved out-of-memory logic in NAPI loop, reduced
default rings on multi-port devices, new PCI IDs. Of particular note,

CPU affinity hints from Vasundhara Volam.

TC Flower eswitch support from Sathya Perla.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/Kconfig

@@ -212,6 +212,15 @@ config BNXT_SRIOV
 	  Virtualization support in the NetXtreme-C/E products. This
 	  allows for virtual function acceleration in virtual environments.
 
+config BNXT_FLOWER_OFFLOAD
+	bool "TC Flower offload support for NetXtreme-C/E"
+	depends on BNXT
+	default y
+	---help---
+	  This configuration parameter enables TC Flower packet classifier
+	  offload for eswitch.  This option enables SR-IOV switchdev eswitch
+	  offload.
+
 config BNXT_DCB
 	bool "Data Center Bridging (DCB) Support"
 	default n

drivers/net/ethernet/broadcom/bnxt/Makefile

 obj-$(CONFIG_BNXT) += bnxt_en.o
 
-bnxt_en-y := bnxt.o bnxt_sriov.o bnxt_ethtool.o bnxt_dcb.o bnxt_ulp.o bnxt_xdp.o bnxt_vfr.o
+bnxt_en-y := bnxt.o bnxt_sriov.o bnxt_ethtool.o bnxt_dcb.o bnxt_ulp.o bnxt_xdp.o bnxt_vfr.o bnxt_tc.o

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -49,6 +49,8 @@
 #include <linux/aer.h>
 #include <linux/bitmap.h>
 #include <linux/cpu_rmap.h>
+#include <linux/cpumask.h>
+#include <net/pkt_cls.h>
 
 #include "bnxt_hsi.h"
 #include "bnxt.h"
@@ -58,6 +60,7 @@
 #include "bnxt_dcb.h"
 #include "bnxt_xdp.h"
 #include "bnxt_vfr.h"
+#include "bnxt_tc.h"
 
 #define BNXT_TX_TIMEOUT		(5 * HZ)
 
@@ -103,6 +106,8 @@ enum board_idx {
 	BCM57416_NPAR,
 	BCM57452,
 	BCM57454,
+	BCM58802,
+	BCM58808,
 	NETXTREME_E_VF,
 	NETXTREME_C_VF,
 };
@@ -111,39 +116,42 @@ enum board_idx {
 static const struct {
 	char *name;
 } board_info[] = {
-	{ "Broadcom BCM57301 NetXtreme-C 10Gb Ethernet" },
-	{ "Broadcom BCM57302 NetXtreme-C 10Gb/25Gb Ethernet" },
-	{ "Broadcom BCM57304 NetXtreme-C 10Gb/25Gb/40Gb/50Gb Ethernet" },
-	{ "Broadcom BCM57417 NetXtreme-E Ethernet Partition" },
-	{ "Broadcom BCM58700 Nitro 1Gb/2.5Gb/10Gb Ethernet" },
-	{ "Broadcom BCM57311 NetXtreme-C 10Gb Ethernet" },
-	{ "Broadcom BCM57312 NetXtreme-C 10Gb/25Gb Ethernet" },
-	{ "Broadcom BCM57402 NetXtreme-E 10Gb Ethernet" },
-	{ "Broadcom BCM57404 NetXtreme-E 10Gb/25Gb Ethernet" },
-	{ "Broadcom BCM57406 NetXtreme-E 10GBase-T Ethernet" },
-	{ "Broadcom BCM57402 NetXtreme-E Ethernet Partition" },
-	{ "Broadcom BCM57407 NetXtreme-E 10GBase-T Ethernet" },
-	{ "Broadcom BCM57412 NetXtreme-E 10Gb Ethernet" },
-	{ "Broadcom BCM57414 NetXtreme-E 10Gb/25Gb Ethernet" },
-	{ "Broadcom BCM57416 NetXtreme-E 10GBase-T Ethernet" },
-	{ "Broadcom BCM57417 NetXtreme-E 10GBase-T Ethernet" },
-	{ "Broadcom BCM57412 NetXtreme-E Ethernet Partition" },
-	{ "Broadcom BCM57314 NetXtreme-C 10Gb/25Gb/40Gb/50Gb Ethernet" },
-	{ "Broadcom BCM57417 NetXtreme-E 10Gb/25Gb Ethernet" },
-	{ "Broadcom BCM57416 NetXtreme-E 10Gb Ethernet" },
-	{ "Broadcom BCM57404 NetXtreme-E Ethernet Partition" },
-	{ "Broadcom BCM57406 NetXtreme-E Ethernet Partition" },
-	{ "Broadcom BCM57407 NetXtreme-E 25Gb Ethernet" },
-	{ "Broadcom BCM57407 NetXtreme-E Ethernet Partition" },
-	{ "Broadcom BCM57414 NetXtreme-E Ethernet Partition" },
-	{ "Broadcom BCM57416 NetXtreme-E Ethernet Partition" },
-	{ "Broadcom BCM57452 NetXtreme-E 10Gb/25Gb/40Gb/50Gb Ethernet" },
-	{ "Broadcom BCM57454 NetXtreme-E 10Gb/25Gb/40Gb/50Gb/100Gb Ethernet" },
-	{ "Broadcom NetXtreme-E Ethernet Virtual Function" },
-	{ "Broadcom NetXtreme-C Ethernet Virtual Function" },
+	[BCM57301] = { "Broadcom BCM57301 NetXtreme-C 10Gb Ethernet" },
+	[BCM57302] = { "Broadcom BCM57302 NetXtreme-C 10Gb/25Gb Ethernet" },
+	[BCM57304] = { "Broadcom BCM57304 NetXtreme-C 10Gb/25Gb/40Gb/50Gb Ethernet" },
+	[BCM57417_NPAR] = { "Broadcom BCM57417 NetXtreme-E Ethernet Partition" },
+	[BCM58700] = { "Broadcom BCM58700 Nitro 1Gb/2.5Gb/10Gb Ethernet" },
+	[BCM57311] = { "Broadcom BCM57311 NetXtreme-C 10Gb Ethernet" },
+	[BCM57312] = { "Broadcom BCM57312 NetXtreme-C 10Gb/25Gb Ethernet" },
+	[BCM57402] = { "Broadcom BCM57402 NetXtreme-E 10Gb Ethernet" },
+	[BCM57404] = { "Broadcom BCM57404 NetXtreme-E 10Gb/25Gb Ethernet" },
+	[BCM57406] = { "Broadcom BCM57406 NetXtreme-E 10GBase-T Ethernet" },
+	[BCM57402_NPAR] = { "Broadcom BCM57402 NetXtreme-E Ethernet Partition" },
+	[BCM57407] = { "Broadcom BCM57407 NetXtreme-E 10GBase-T Ethernet" },
+	[BCM57412] = { "Broadcom BCM57412 NetXtreme-E 10Gb Ethernet" },
+	[BCM57414] = { "Broadcom BCM57414 NetXtreme-E 10Gb/25Gb Ethernet" },
+	[BCM57416] = { "Broadcom BCM57416 NetXtreme-E 10GBase-T Ethernet" },
+	[BCM57417] = { "Broadcom BCM57417 NetXtreme-E 10GBase-T Ethernet" },
+	[BCM57412_NPAR] = { "Broadcom BCM57412 NetXtreme-E Ethernet Partition" },
+	[BCM57314] = { "Broadcom BCM57314 NetXtreme-C 10Gb/25Gb/40Gb/50Gb Ethernet" },
+	[BCM57417_SFP] = { "Broadcom BCM57417 NetXtreme-E 10Gb/25Gb Ethernet" },
+	[BCM57416_SFP] = { "Broadcom BCM57416 NetXtreme-E 10Gb Ethernet" },
+	[BCM57404_NPAR] = { "Broadcom BCM57404 NetXtreme-E Ethernet Partition" },
+	[BCM57406_NPAR] = { "Broadcom BCM57406 NetXtreme-E Ethernet Partition" },
+	[BCM57407_SFP] = { "Broadcom BCM57407 NetXtreme-E 25Gb Ethernet" },
+	[BCM57407_NPAR] = { "Broadcom BCM57407 NetXtreme-E Ethernet Partition" },
+	[BCM57414_NPAR] = { "Broadcom BCM57414 NetXtreme-E Ethernet Partition" },
+	[BCM57416_NPAR] = { "Broadcom BCM57416 NetXtreme-E Ethernet Partition" },
+	[BCM57452] = { "Broadcom BCM57452 NetXtreme-E 10Gb/25Gb/40Gb/50Gb Ethernet" },
+	[BCM57454] = { "Broadcom BCM57454 NetXtreme-E 10Gb/25Gb/40Gb/50Gb/100Gb Ethernet" },
+	[BCM58802] = { "Broadcom BCM58802 NetXtreme-S 10Gb/25Gb/40Gb/50Gb Ethernet" },
+	[BCM58808] = { "Broadcom BCM58808 NetXtreme-S 10Gb/25Gb/40Gb/50Gb/100Gb Ethernet" },
+	[NETXTREME_E_VF] = { "Broadcom NetXtreme-E Ethernet Virtual Function" },
+	[NETXTREME_C_VF] = { "Broadcom NetXtreme-C Ethernet Virtual Function" },
 };
 
 static const struct pci_device_id bnxt_pci_tbl[] = {
+	{ PCI_VDEVICE(BROADCOM, 0x1614), .driver_data = BCM57454 },
 	{ PCI_VDEVICE(BROADCOM, 0x16c0), .driver_data = BCM57417_NPAR },
 	{ PCI_VDEVICE(BROADCOM, 0x16c8), .driver_data = BCM57301 },
 	{ PCI_VDEVICE(BROADCOM, 0x16c9), .driver_data = BCM57302 },
@@ -174,8 +182,9 @@ static const struct pci_device_id bnxt_pci_tbl[] = {
 	{ PCI_VDEVICE(BROADCOM, 0x16ed), .driver_data = BCM57414_NPAR },
 	{ PCI_VDEVICE(BROADCOM, 0x16ee), .driver_data = BCM57416_NPAR },
 	{ PCI_VDEVICE(BROADCOM, 0x16ef), .driver_data = BCM57416_NPAR },
+	{ PCI_VDEVICE(BROADCOM, 0x16f0), .driver_data = BCM58808 },
 	{ PCI_VDEVICE(BROADCOM, 0x16f1), .driver_data = BCM57452 },
-	{ PCI_VDEVICE(BROADCOM, 0x1614), .driver_data = BCM57454 },
+	{ PCI_VDEVICE(BROADCOM, 0xd802), .driver_data = BCM58802 },
 #ifdef CONFIG_BNXT_SRIOV
 	{ PCI_VDEVICE(BROADCOM, 0x1606), .driver_data = NETXTREME_E_VF },
 	{ PCI_VDEVICE(BROADCOM, 0x1609), .driver_data = NETXTREME_E_VF },
@@ -1843,6 +1852,13 @@ static int bnxt_poll_work(struct bnxt *bp, struct bnxt_napi *bnapi, int budget)
 							   &event);
 			if (likely(rc >= 0))
 				rx_pkts += rc;
+			/* Increment rx_pkts when rc is -ENOMEM to count towards
+			 * the NAPI budget.  Otherwise, we may potentially loop
+			 * here forever if we consistently cannot allocate
+			 * buffers.
+			 */
+			else if (rc == -ENOMEM)
+				rx_pkts++;
 			else if (rc == -EBUSY)	/* partial completion */
 				break;
 		} else if (unlikely((TX_CMP_TYPE(txcmp) ==
@@ -4461,9 +4477,33 @@ static int bnxt_hwrm_reserve_tx_rings(struct bnxt *bp, int *tx_rings)
 	mutex_lock(&bp->hwrm_cmd_lock);
 	rc = __bnxt_hwrm_get_tx_rings(bp, 0xffff, tx_rings);
 	mutex_unlock(&bp->hwrm_cmd_lock);
+	if (!rc)
+		bp->tx_reserved_rings = *tx_rings;
 	return rc;
 }
 
+static int bnxt_hwrm_check_tx_rings(struct bnxt *bp, int tx_rings)
+{
+	struct hwrm_func_cfg_input req = {0};
+	int rc;
+
+	if (bp->hwrm_spec_code < 0x10801)
+		return 0;
+
+	if (BNXT_VF(bp))
+		return 0;
+
+	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
+	req.fid = cpu_to_le16(0xffff);
+	req.flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TX_ASSETS_TEST);
+	req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS);
+	req.num_tx_rings = cpu_to_le16(tx_rings);
+	rc = hwrm_send_message_silent(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	if (rc)
+		return -ENOMEM;
+	return 0;
+}
+
 static void bnxt_hwrm_set_coal_params(struct bnxt *bp, u32 max_bufs,
 	u32 buf_tmrs, u16 flags,
 	struct hwrm_ring_cmpl_ring_cfg_aggint_params_input *req)
@@ -5115,6 +5155,15 @@ static int bnxt_init_chip(struct bnxt *bp, bool irq_re_init)
 				   rc);
 			goto err_out;
 		}
+		if (bp->tx_reserved_rings != bp->tx_nr_rings) {
+			int tx = bp->tx_nr_rings;
+
+			if (bnxt_hwrm_reserve_tx_rings(bp, &tx) ||
+			    tx < bp->tx_nr_rings) {
+				rc = -ENOMEM;
+				goto err_out;
+			}
+		}
 	}
 
 	rc = bnxt_hwrm_ring_alloc(bp);
@@ -5521,8 +5570,15 @@ static void bnxt_free_irq(struct bnxt *bp)
 
 	for (i = 0; i < bp->cp_nr_rings; i++) {
 		irq = &bp->irq_tbl[i];
-		if (irq->requested)
+		if (irq->requested) {
+			if (irq->have_cpumask) {
+				irq_set_affinity_hint(irq->vector, NULL);
+				free_cpumask_var(irq->cpu_mask);
+				irq->have_cpumask = 0;
+			}
 			free_irq(irq->vector, bp->bnapi[i]);
+		}
+
 		irq->requested = 0;
 	}
 }
@@ -5555,6 +5611,21 @@ static int bnxt_request_irq(struct bnxt *bp)
 			break;
 
 		irq->requested = 1;
+
+		if (zalloc_cpumask_var(&irq->cpu_mask, GFP_KERNEL)) {
+			int numa_node = dev_to_node(&bp->pdev->dev);
+
+			irq->have_cpumask = 1;
+			cpumask_set_cpu(cpumask_local_spread(i, numa_node),
+					irq->cpu_mask);
+			rc = irq_set_affinity_hint(irq->vector, irq->cpu_mask);
+			if (rc) {
+				netdev_warn(bp->dev,
+					    "Set affinity failed, IRQ = %d\n",
+					    irq->vector);
+				break;
+			}
+		}
 	}
 	return rc;
 }
@@ -5726,6 +5797,8 @@ static int bnxt_hwrm_phy_qcaps(struct bnxt *bp)
 		link_info->support_auto_speeds =
 			le16_to_cpu(resp->supported_speeds_auto_mode);
 
+	bp->port_count = resp->port_cnt;
+
 hwrm_phy_qcaps_exit:
 	mutex_unlock(&bp->hwrm_cmd_lock);
 	return rc;
@@ -6998,8 +7071,8 @@ static void bnxt_sp_task(struct work_struct *work)
 }
 
 /* Under rtnl_lock */
-int bnxt_reserve_rings(struct bnxt *bp, int tx, int rx, bool sh, int tcs,
-		       int tx_xdp)
+int bnxt_check_rings(struct bnxt *bp, int tx, int rx, bool sh, int tcs,
+		     int tx_xdp)
 {
 	int max_rx, max_tx, tx_sets = 1;
 	int tx_rings_needed;
@@ -7019,10 +7092,7 @@ int bnxt_reserve_rings(struct bnxt *bp, int tx, int rx, bool sh, int tcs,
 	if (max_tx < tx_rings_needed)
 		return -ENOMEM;
 
-	if (bnxt_hwrm_reserve_tx_rings(bp, &tx_rings_needed) ||
-	    tx_rings_needed < (tx * tx_sets + tx_xdp))
-		return -ENOMEM;
-	return 0;
+	return bnxt_hwrm_check_tx_rings(bp, tx_rings_needed);
 }
 
 static void bnxt_unmap_bars(struct bnxt *bp, struct pci_dev *pdev)
@@ -7211,8 +7281,8 @@ int bnxt_setup_mq_tc(struct net_device *dev, u8 tc)
 	if (bp->flags & BNXT_FLAG_SHARED_RINGS)
 		sh = true;
 
-	rc = bnxt_reserve_rings(bp, bp->tx_nr_rings_per_tc, bp->rx_nr_rings,
-				sh, tc, bp->tx_nr_rings_xdp);
+	rc = bnxt_check_rings(bp, bp->tx_nr_rings_per_tc, bp->rx_nr_rings,
+			      sh, tc, bp->tx_nr_rings_xdp);
 	if (rc)
 		return rc;
 
@@ -7237,17 +7307,33 @@ int bnxt_setup_mq_tc(struct net_device *dev, u8 tc)
 	return 0;
 }
 
-static int bnxt_setup_tc(struct net_device *dev, enum tc_setup_type type,
-			 void *type_data)
+static int bnxt_setup_flower(struct net_device *dev,
+			     struct tc_cls_flower_offload *cls_flower)
 {
-	struct tc_mqprio_qopt *mqprio = type_data;
+	struct bnxt *bp = netdev_priv(dev);
 
-	if (type != TC_SETUP_MQPRIO)
+	if (BNXT_VF(bp))
 		return -EOPNOTSUPP;
 
-	mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
+	return bnxt_tc_setup_flower(bp, bp->pf.fw_fid, cls_flower);
+}
+
+static int bnxt_setup_tc(struct net_device *dev, enum tc_setup_type type,
+			 void *type_data)
+{
+	switch (type) {
+	case TC_SETUP_CLSFLOWER:
+		return bnxt_setup_flower(dev, type_data);
+	case TC_SETUP_MQPRIO: {
+		struct tc_mqprio_qopt *mqprio = type_data;
+
+		mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
 
-	return bnxt_setup_mq_tc(dev, mqprio->num_tc);
+		return bnxt_setup_mq_tc(dev, mqprio->num_tc);
+	}
+	default:
+		return -EOPNOTSUPP;
+	}
 }
 
 #ifdef CONFIG_RFS_ACCEL
@@ -7643,6 +7729,7 @@ static void bnxt_remove_one(struct pci_dev *pdev)
 
 	pci_disable_pcie_error_reporting(pdev);
 	unregister_netdev(dev);
+	bnxt_shutdown_tc(bp);
 	cancel_work_sync(&bp->sp_task);
 	bp->sp_event = 0;
 
@@ -7811,6 +7898,9 @@ static int bnxt_set_dflt_rings(struct bnxt *bp, bool sh)
 	if (sh)
 		bp->flags |= BNXT_FLAG_SHARED_RINGS;
 	dflt_rings = netif_get_num_default_rss_queues();
+	/* Reduce default rings to reduce memory usage on multi-port cards */
+	if (bp->port_count > 1)
+		dflt_rings = min_t(int, dflt_rings, 4);
 	rc = bnxt_get_dflt_rings(bp, &max_rx_rings, &max_tx_rings, sh);
 	if (rc)
 		return rc;
@@ -7983,6 +8073,10 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	bnxt_ethtool_init(bp);
 	bnxt_dcb_init(bp);
 
+	rc = bnxt_probe_phy(bp);
+	if (rc)
+		goto init_err_pci_clean;
+
 	bnxt_set_rx_skb_mode(bp, false);
 	bnxt_set_tpa_flags(bp);
 	bnxt_set_ring_params(bp);
@@ -8017,10 +8111,6 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (dev->hw_features & NETIF_F_HW_VLAN_CTAG_RX)
 		bp->flags |= BNXT_FLAG_STRIP_VLAN;
 
-	rc = bnxt_probe_phy(bp);
-	if (rc)
-		goto init_err_pci_clean;
-
 	rc = bnxt_init_int_mode(bp);
 	if (rc)
 		goto init_err_pci_clean;
@@ -8031,9 +8121,12 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	else
 		device_set_wakeup_capable(&pdev->dev, false);
 
+	if (BNXT_PF(bp))
+		bnxt_init_tc(bp);
+
 	rc = register_netdev(dev);
 	if (rc)
-		goto init_err_clr_int;
+		goto init_err_cleanup_tc;
 
 	if (BNXT_PF(bp))
 		bnxt_dl_register(bp);
@@ -8046,7 +8139,8 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	return 0;
 
-init_err_clr_int:
+init_err_cleanup_tc:
+	bnxt_shutdown_tc(bp);
 	bnxt_clear_int_mode(bp);
 
 init_err_pci_clean:

drivers/net/ethernet/broadcom/bnxt/bnxt.h

@@ -19,6 +19,7 @@
 #define DRV_VER_UPD	0
 
 #include <linux/interrupt.h>
+#include <linux/rhashtable.h>
 #include <net/devlink.h>
 #include <net/dst_metadata.h>
 #include <net/switchdev.h>
@@ -701,8 +702,10 @@ struct bnxt_napi {
 struct bnxt_irq {
 	irq_handler_t	handler;
 	unsigned int	vector;
-	u8		requested;
+	u8		requested:1;
+	u8		have_cpumask:1;
 	char		name[IFNAMSIZ + 2];
+	cpumask_var_t	cpu_mask;
 };
 
 #define HWRM_RING_ALLOC_TX	0x1
@@ -941,6 +944,27 @@ struct bnxt_test_info {
 #define BNXT_CAG_REG_LEGACY_INT_STATUS	0x4014
 #define BNXT_CAG_REG_BASE		0x300000
 
+struct bnxt_tc_info {
+	bool				enabled;
+
+	/* hash table to store TC offloaded flows */
+	struct rhashtable		flow_table;
+	struct rhashtable_params	flow_ht_params;
+
+	/* hash table to store L2 keys of TC flows */
+	struct rhashtable		l2_table;
+	struct rhashtable_params	l2_ht_params;
+
+	/* lock to atomically add/del an l2 node when a flow is
+	 * added or deleted.
+	 */
+	struct mutex			lock;
+
+	/* Stat counter mask (width) */
+	u64				bytes_mask;
+	u64				packets_mask;
+};
+
 struct bnxt_vf_rep_stats {
 	u64			packets;
 	u64			bytes;
@@ -988,6 +1012,9 @@ struct bnxt {
 
 #define CHIP_NUM_5745X		0xd730
 
+#define CHIP_NUM_58802		0xd802
+#define CHIP_NUM_58808		0xd808
+
 #define BNXT_CHIP_NUM_5730X(chip_num)		\
 	((chip_num) >= CHIP_NUM_57301 &&	\
 	 (chip_num) <= CHIP_NUM_57304)
@@ -1019,6 +1046,10 @@ struct bnxt {
 #define BNXT_CHIP_NUM_57X1X(chip_num)		\
 	(BNXT_CHIP_NUM_5731X(chip_num) || BNXT_CHIP_NUM_5741X(chip_num))
 
+#define BNXT_CHIP_NUM_588XX(chip_num)		\
+	((chip_num) == CHIP_NUM_58802 ||	\
+	 (chip_num) == CHIP_NUM_58808)
+
 	struct net_device	*dev;
 	struct pci_dev		*pdev;
 
@@ -1077,6 +1108,7 @@ struct bnxt {
 #define BNXT_CHIP_P4_PLUS(bp)			\
 	(BNXT_CHIP_NUM_57X1X((bp)->chip_num) ||	\
 	 BNXT_CHIP_NUM_5745X((bp)->chip_num) ||	\
+	 BNXT_CHIP_NUM_588XX((bp)->chip_num) ||	\
 	 (BNXT_CHIP_NUM_58700((bp)->chip_num) &&	\
 	  !BNXT_CHIP_TYPE_NITRO_A0(bp)))
 
@@ -1118,6 +1150,7 @@ struct bnxt {
 	int			tx_nr_rings;
 	int			tx_nr_rings_per_tc;
 	int			tx_nr_rings_xdp;
+	int			tx_reserved_rings;
 
 	int			tx_wake_thresh;
 	int			tx_push_thresh;
@@ -1196,6 +1229,7 @@ struct bnxt {
 	u8			nge_port_cnt;
 	__le16			nge_fw_dst_port_id;
 	u8			port_partition_type;
+	u8			port_count;
 	u16			br_mode;
 
 	u16			rx_coal_ticks;
@@ -1277,6 +1311,7 @@ struct bnxt {
 	enum devlink_eswitch_mode eswitch_mode;
 	struct bnxt_vf_rep	**vf_reps; /* array of vf-rep ptrs */
 	u16			*cfa_code_map; /* cfa_code -> vf_idx map */
+	struct bnxt_tc_info	tc_info;
 };
 
 #define BNXT_RX_STATS_OFFSET(counter)			\
@@ -1346,8 +1381,8 @@ int bnxt_open_nic(struct bnxt *, bool, bool);
 int bnxt_half_open_nic(struct bnxt *bp);
 void bnxt_half_close_nic(struct bnxt *bp);
 int bnxt_close_nic(struct bnxt *, bool, bool);
-int bnxt_reserve_rings(struct bnxt *bp, int tx, int rx, bool sh, int tcs,
-		       int tx_xdp);
+int bnxt_check_rings(struct bnxt *bp, int tx, int rx, bool sh, int tcs,
+		     int tx_xdp);
 int bnxt_setup_mq_tc(struct net_device *dev, u8 tc);
 int bnxt_get_max_rings(struct bnxt *, int *, int *, bool);
 void bnxt_restore_pf_fw_resources(struct bnxt *bp);

drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c

@@ -435,8 +435,7 @@ static int bnxt_set_channels(struct net_device *dev,
 		}
 		tx_xdp = req_rx_rings;
 	}
-	rc = bnxt_reserve_rings(bp, req_tx_rings, req_rx_rings, sh, tcs,
-				tx_xdp);
+	rc = bnxt_check_rings(bp, req_tx_rings, req_rx_rings, sh, tcs, tx_xdp);
 	if (rc) {
 		netdev_warn(dev, "Unable to allocate the requested rings\n");
 		return rc;

drivers/net/ethernet/broadcom/bnxt/bnxt_hsi.h

@@ -11,14 +11,14 @@
 #ifndef BNXT_HSI_H
 #define BNXT_HSI_H
 
-/* HSI and HWRM Specification 1.8.0 */
+/* HSI and HWRM Specification 1.8.1 */
 #define HWRM_VERSION_MAJOR	1
 #define HWRM_VERSION_MINOR	8
-#define HWRM_VERSION_UPDATE	0
+#define HWRM_VERSION_UPDATE	1
 
-#define HWRM_VERSION_RSVD	0 /* non-zero means beta version */
+#define HWRM_VERSION_RSVD	4 /* non-zero means beta version */
 
-#define HWRM_VERSION_STR	"1.8.0.0"
+#define HWRM_VERSION_STR	"1.8.1.4"
 /*
  * Following is the signature for HWRM message field that indicates not
  * applicable (All F's). Need to cast it the size of the field if needed.
@@ -946,6 +946,7 @@ struct hwrm_func_cfg_input {
 	#define FUNC_CFG_REQ_FLAGS_STD_TX_RING_MODE_DISABLE	    0x400UL
 	#define FUNC_CFG_REQ_FLAGS_VIRT_MAC_PERSIST		    0x800UL
 	#define FUNC_CFG_REQ_FLAGS_NO_AUTOCLEAR_STATISTIC	    0x1000UL
+	#define FUNC_CFG_REQ_FLAGS_TX_ASSETS_TEST		    0x2000UL
 	__le32 enables;
 	#define FUNC_CFG_REQ_ENABLES_MTU			    0x1UL
 	#define FUNC_CFG_REQ_ENABLES_MRU			    0x2UL
@@ -1972,7 +1973,12 @@ struct hwrm_port_phy_qcaps_output {
 	#define PORT_PHY_QCAPS_RESP_FLAGS_EEE_SUPPORTED	    0x1UL
 	#define PORT_PHY_QCAPS_RESP_FLAGS_RSVD1_MASK		    0xfeUL
 	#define PORT_PHY_QCAPS_RESP_FLAGS_RSVD1_SFT		    1
-	u8 unused_0;
+	u8 port_cnt;
+	#define PORT_PHY_QCAPS_RESP_PORT_CNT_UNKNOWN		   0x0UL
+	#define PORT_PHY_QCAPS_RESP_PORT_CNT_1			   0x1UL
+	#define PORT_PHY_QCAPS_RESP_PORT_CNT_2			   0x2UL
+	#define PORT_PHY_QCAPS_RESP_PORT_CNT_3			   0x3UL
+	#define PORT_PHY_QCAPS_RESP_PORT_CNT_4			   0x4UL
 	__le16 supported_speeds_force_mode;
 	#define PORT_PHY_QCAPS_RESP_SUPPORTED_SPEEDS_FORCE_MODE_100MBHD 0x1UL
 	#define PORT_PHY_QCAPS_RESP_SUPPORTED_SPEEDS_FORCE_MODE_100MB 0x2UL
@@ -4407,6 +4413,164 @@ struct hwrm_cfa_ntuple_filter_cfg_output {
 	u8 valid;
 };
 
+/* hwrm_cfa_flow_alloc */
+/* Input (128 bytes) */
+struct hwrm_cfa_flow_alloc_input {
+	__le16 req_type;
+	__le16 cmpl_ring;
+	__le16 seq_id;
+	__le16 target_id;
+	__le64 resp_addr;
+	__le16 flags;
+	#define CFA_FLOW_ALLOC_REQ_FLAGS_TUNNEL		    0x1UL
+	#define CFA_FLOW_ALLOC_REQ_FLAGS_NUM_VLAN_MASK		    0x6UL
+	#define CFA_FLOW_ALLOC_REQ_FLAGS_NUM_VLAN_SFT		    1
+	#define CFA_FLOW_ALLOC_REQ_FLAGS_NUM_VLAN_NONE		   (0x0UL << 1)
+	#define CFA_FLOW_ALLOC_REQ_FLAGS_NUM_VLAN_ONE		   (0x1UL << 1)
+	#define CFA_FLOW_ALLOC_REQ_FLAGS_NUM_VLAN_TWO		   (0x2UL << 1)
+	#define CFA_FLOW_ALLOC_REQ_FLAGS_NUM_VLAN_LAST    CFA_FLOW_ALLOC_REQ_FLAGS_NUM_VLAN_TWO
+	#define CFA_FLOW_ALLOC_REQ_FLAGS_FLOWTYPE_MASK		    0x38UL
+	#define CFA_FLOW_ALLOC_REQ_FLAGS_FLOWTYPE_SFT		    3
+	#define CFA_FLOW_ALLOC_REQ_FLAGS_FLOWTYPE_L2		   (0x0UL << 3)
+	#define CFA_FLOW_ALLOC_REQ_FLAGS_FLOWTYPE_IPV4		   (0x1UL << 3)
+	#define CFA_FLOW_ALLOC_REQ_FLAGS_FLOWTYPE_IPV6		   (0x2UL << 3)
+	#define CFA_FLOW_ALLOC_REQ_FLAGS_FLOWTYPE_LAST    CFA_FLOW_ALLOC_REQ_FLAGS_FLOWTYPE_IPV6
+	__le16 src_fid;
+	__le32 tunnel_handle;
+	__le16 action_flags;
+	#define CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_FWD		    0x1UL
+	#define CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_RECYCLE	    0x2UL
+	#define CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_DROP		    0x4UL
+	#define CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_METER		    0x8UL
+	#define CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_TUNNEL		    0x10UL
+	#define CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_NAT_SRC	    0x20UL
+	#define CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_NAT_DEST	    0x40UL
+	#define CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_NAT_IPV4_ADDRESS   0x80UL
+	#define CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_L2_HEADER_REWRITE  0x100UL
+	#define CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_TTL_DECREMENT      0x200UL
+	__le16 dst_fid;
+	__be16 l2_rewrite_vlan_tpid;
+	__be16 l2_rewrite_vlan_tci;
+	__le16 act_meter_id;
+	__le16 ref_flow_handle;
+	__be16 ethertype;
+	__be16 outer_vlan_tci;
+	__be16 dmac[3];
+	__be16 inner_vlan_tci;
+	__be16 smac[3];
+	u8 ip_dst_mask_len;
+	u8 ip_src_mask_len;
+	__be32 ip_dst[4];
+	__be32 ip_src[4];
+	__be16 l4_src_port;
+	__be16 l4_src_port_mask;
+	__be16 l4_dst_port;
+	__be16 l4_dst_port_mask;
+	__be32 nat_ip_address[4];
+	__be16 l2_rewrite_dmac[3];
+	__be16 nat_port;
+	__be16 l2_rewrite_smac[3];
+	u8 ip_proto;
+	u8 unused_0;
+};
+
+/* Output (16 bytes) */
+struct hwrm_cfa_flow_alloc_output {
+	__le16 error_code;
+	__le16 req_type;
+	__le16 seq_id;
+	__le16 resp_len;
+	__le16 flow_handle;
+	u8 unused_0;
+	u8 unused_1;
+	u8 unused_2;
+	u8 unused_3;
+	u8 unused_4;
+	u8 valid;
+};
+
+/* hwrm_cfa_flow_free */
+/* Input (24 bytes) */
+struct hwrm_cfa_flow_free_input {
+	__le16 req_type;
+	__le16 cmpl_ring;
+	__le16 seq_id;
+	__le16 target_id;
+	__le64 resp_addr;
+	__le16 flow_handle;
+	__le16 unused_0[3];
+};
+
+/* Output (32 bytes) */
+struct hwrm_cfa_flow_free_output {
+	__le16 error_code;
+	__le16 req_type;
+	__le16 seq_id;
+	__le16 resp_len;
+	__le64 packet;
+	__le64 byte;
+	__le32 unused_0;
+	u8 unused_1;
+	u8 unused_2;
+	u8 unused_3;
+	u8 valid;
+};
+
+/* hwrm_cfa_flow_stats */
+/* Input (40 bytes) */
+struct hwrm_cfa_flow_stats_input {
+	__le16 req_type;
+	__le16 cmpl_ring;
+	__le16 seq_id;
+	__le16 target_id;
+	__le64 resp_addr;
+	__le16 num_flows;
+	__le16 flow_handle_0;
+	__le16 flow_handle_1;
+	__le16 flow_handle_2;
+	__le16 flow_handle_3;
+	__le16 flow_handle_4;
+	__le16 flow_handle_5;
+	__le16 flow_handle_6;
+	__le16 flow_handle_7;
+	__le16 flow_handle_8;
+	__le16 flow_handle_9;
+	__le16 unused_0;
+};
+
+/* Output (176 bytes) */
+struct hwrm_cfa_flow_stats_output {
+	__le16 error_code;
+	__le16 req_type;
+	__le16 seq_id;
+	__le16 resp_len;
+	__le64 packet_0;
+	__le64 packet_1;
+	__le64 packet_2;
+	__le64 packet_3;
+	__le64 packet_4;
+	__le64 packet_5;
+	__le64 packet_6;
+	__le64 packet_7;
+	__le64 packet_8;
+	__le64 packet_9;
+	__le64 byte_0;
+	__le64 byte_1;
+	__le64 byte_2;
+	__le64 byte_3;
+	__le64 byte_4;
+	__le64 byte_5;
+	__le64 byte_6;
+	__le64 byte_7;
+	__le64 byte_8;
+	__le64 byte_9;
+	__le32 unused_0;
+	u8 unused_1;
+	u8 unused_2;
+	u8 unused_3;
+	u8 valid;
+};
+
 /* hwrm_cfa_vfr_alloc */
 /* Input (32 bytes) */
 struct hwrm_cfa_vfr_alloc_input {
@@ -5534,11 +5698,15 @@ struct hwrm_selftest_qlist_output {
 	#define SELFTEST_QLIST_RESP_AVAILABLE_TESTS_LINK_TEST      0x2UL
 	#define SELFTEST_QLIST_RESP_AVAILABLE_TESTS_REGISTER_TEST  0x4UL
 	#define SELFTEST_QLIST_RESP_AVAILABLE_TESTS_MEMORY_TEST    0x8UL
+	#define SELFTEST_QLIST_RESP_AVAILABLE_TESTS_PCIE_EYE_TEST  0x10UL
+	#define SELFTEST_QLIST_RESP_AVAILABLE_TESTS_ETHERNET_EYE_TEST 0x20UL
 	u8 offline_tests;
 	#define SELFTEST_QLIST_RESP_OFFLINE_TESTS_NVM_TEST	    0x1UL
 	#define SELFTEST_QLIST_RESP_OFFLINE_TESTS_LINK_TEST	    0x2UL
 	#define SELFTEST_QLIST_RESP_OFFLINE_TESTS_REGISTER_TEST    0x4UL
 	#define SELFTEST_QLIST_RESP_OFFLINE_TESTS_MEMORY_TEST      0x8UL
+	#define SELFTEST_QLIST_RESP_OFFLINE_TESTS_PCIE_EYE_TEST    0x10UL
+	#define SELFTEST_QLIST_RESP_OFFLINE_TESTS_ETHERNET_EYE_TEST 0x20UL
 	u8 unused_0;
 	__le16 test_timeout;
 	u8 unused_1;
@@ -5566,6 +5734,8 @@ struct hwrm_selftest_exec_input {
 	#define SELFTEST_EXEC_REQ_FLAGS_LINK_TEST		    0x2UL
 	#define SELFTEST_EXEC_REQ_FLAGS_REGISTER_TEST		    0x4UL
 	#define SELFTEST_EXEC_REQ_FLAGS_MEMORY_TEST		    0x8UL
+	#define SELFTEST_EXEC_REQ_FLAGS_PCIE_EYE_TEST		    0x10UL
+	#define SELFTEST_EXEC_REQ_FLAGS_ETHERNET_EYE_TEST	    0x20UL
 	u8 unused_0[7];
 };
 
@@ -5580,11 +5750,15 @@ struct hwrm_selftest_exec_output {
 	#define SELFTEST_EXEC_RESP_REQUESTED_TESTS_LINK_TEST       0x2UL
 	#define SELFTEST_EXEC_RESP_REQUESTED_TESTS_REGISTER_TEST   0x4UL
 	#define SELFTEST_EXEC_RESP_REQUESTED_TESTS_MEMORY_TEST     0x8UL
+	#define SELFTEST_EXEC_RESP_REQUESTED_TESTS_PCIE_EYE_TEST   0x10UL
+	#define SELFTEST_EXEC_RESP_REQUESTED_TESTS_ETHERNET_EYE_TEST 0x20UL
 	u8 test_success;
 	#define SELFTEST_EXEC_RESP_TEST_SUCCESS_NVM_TEST	    0x1UL
 	#define SELFTEST_EXEC_RESP_TEST_SUCCESS_LINK_TEST	    0x2UL
 	#define SELFTEST_EXEC_RESP_TEST_SUCCESS_REGISTER_TEST      0x4UL
 	#define SELFTEST_EXEC_RESP_TEST_SUCCESS_MEMORY_TEST	    0x8UL
+	#define SELFTEST_EXEC_RESP_TEST_SUCCESS_PCIE_EYE_TEST      0x10UL
+	#define SELFTEST_EXEC_RESP_TEST_SUCCESS_ETHERNET_EYE_TEST  0x20UL
 	__le16 unused_0[3];
 };
 
@@ -5767,6 +5941,7 @@ struct cmd_nums {
 	#define HWRM_SELFTEST_QLIST				   (0x200UL)
 	#define HWRM_SELFTEST_EXEC				   (0x201UL)
 	#define HWRM_SELFTEST_IRQ				   (0x202UL)
+	#define HWRM_SELFTEST_RETREIVE_EYE_DATA		   (0x203UL)
 	#define HWRM_DBG_READ_DIRECT				   (0xff10UL)
 	#define HWRM_DBG_READ_INDIRECT				   (0xff11UL)
 	#define HWRM_DBG_WRITE_DIRECT				   (0xff12UL)
@@ -5984,6 +6159,7 @@ struct hwrm_struct_hdr {
 	#define STRUCT_HDR_STRUCT_ID_LLDP_DEVICE		   0x426UL
 	#define STRUCT_HDR_STRUCT_ID_AFM_OPAQUE		   0x1UL
 	#define STRUCT_HDR_STRUCT_ID_PORT_DESCRIPTION		   0xaUL
+	#define STRUCT_HDR_STRUCT_ID_RSS_V2			   0x64UL
 	__le16 len;
 	u8 version;
 	u8 count;

drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c

+/* Broadcom NetXtreme-C/E network driver.
+ *
+ * Copyright (c) 2017 Broadcom Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation.
+ */
+
+#include <linux/netdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/if_vlan.h>
+#include <net/flow_dissector.h>
+#include <net/pkt_cls.h>
+#include <net/tc_act/tc_gact.h>
+#include <net/tc_act/tc_skbedit.h>
+#include <net/tc_act/tc_mirred.h>
+#include <net/tc_act/tc_vlan.h>
+
+#include "bnxt_hsi.h"
+#include "bnxt.h"
+#include "bnxt_sriov.h"
+#include "bnxt_tc.h"
+#include "bnxt_vfr.h"
+
+#ifdef CONFIG_BNXT_FLOWER_OFFLOAD
+
+#define BNXT_FID_INVALID			0xffff
+#define VLAN_TCI(vid, prio)	((vid) | ((prio) << VLAN_PRIO_SHIFT))
+
+/* Return the dst fid of the func for flow forwarding
+ * For PFs: src_fid is the fid of the PF
+ * For VF-reps: src_fid the fid of the VF
+ */
+static u16 bnxt_flow_get_dst_fid(struct bnxt *pf_bp, struct net_device *dev)
+{
+	struct bnxt *bp;
+
+	/* check if dev belongs to the same switch */
+	if (!switchdev_port_same_parent_id(pf_bp->dev, dev)) {
+		netdev_info(pf_bp->dev, "dev(ifindex=%d) not on same switch",
+			    dev->ifindex);
+		return BNXT_FID_INVALID;
+	}
+
+	/* Is dev a VF-rep? */
+	if (dev != pf_bp->dev)
+		return bnxt_vf_rep_get_fid(dev);
+
+	bp = netdev_priv(dev);
+	return bp->pf.fw_fid;
+}
+
+static int bnxt_tc_parse_redir(struct bnxt *bp,
+			       struct bnxt_tc_actions *actions,
+			       const struct tc_action *tc_act)
+{
+	int ifindex = tcf_mirred_ifindex(tc_act);
+	struct net_device *dev;
+	u16 dst_fid;
+
+	dev = __dev_get_by_index(dev_net(bp->dev), ifindex);
+	if (!dev) {
+		netdev_info(bp->dev, "no dev for ifindex=%d", ifindex);
+		return -EINVAL;
+	}
+
+	/* find the FID from dev */
+	dst_fid = bnxt_flow_get_dst_fid(bp, dev);
+	if (dst_fid == BNXT_FID_INVALID) {
+		netdev_info(bp->dev, "can't get fid for ifindex=%d", ifindex);
+		return -EINVAL;
+	}
+
+	actions->flags |= BNXT_TC_ACTION_FLAG_FWD;
+	actions->dst_fid = dst_fid;
+	actions->dst_dev = dev;
+	return 0;
+}
+
+static void bnxt_tc_parse_vlan(struct bnxt *bp,
+			       struct bnxt_tc_actions *actions,
+			       const struct tc_action *tc_act)
+{
+	if (tcf_vlan_action(tc_act) == TCA_VLAN_ACT_POP) {
+		actions->flags |= BNXT_TC_ACTION_FLAG_POP_VLAN;
+	} else if (tcf_vlan_action(tc_act) == TCA_VLAN_ACT_PUSH) {
+		actions->flags |= BNXT_TC_ACTION_FLAG_PUSH_VLAN;
+		actions->push_vlan_tci = htons(tcf_vlan_push_vid(tc_act));
+		actions->push_vlan_tpid = tcf_vlan_push_proto(tc_act);
+	}
+}
+
+static int bnxt_tc_parse_actions(struct bnxt *bp,
+				 struct bnxt_tc_actions *actions,
+				 struct tcf_exts *tc_exts)
+{
+	const struct tc_action *tc_act;
+	LIST_HEAD(tc_actions);
+	int rc;
+
+	if (!tcf_exts_has_actions(tc_exts)) {
+		netdev_info(bp->dev, "no actions");
+		return -EINVAL;
+	}
+
+	tcf_exts_to_list(tc_exts, &tc_actions);
+	list_for_each_entry(tc_act, &tc_actions, list) {
+		/* Drop action */
+		if (is_tcf_gact_shot(tc_act)) {
+			actions->flags |= BNXT_TC_ACTION_FLAG_DROP;
+			return 0; /* don't bother with other actions */
+		}
+
+		/* Redirect action */
+		if (is_tcf_mirred_egress_redirect(tc_act)) {
+			rc = bnxt_tc_parse_redir(bp, actions, tc_act);
+			if (rc)
+				return rc;
+			continue;
+		}
+
+		/* Push/pop VLAN */
+		if (is_tcf_vlan(tc_act)) {
+			bnxt_tc_parse_vlan(bp, actions, tc_act);
+			continue;
+		}
+	}
+
+	return 0;
+}
+
+#define GET_KEY(flow_cmd, key_type)					\
+		skb_flow_dissector_target((flow_cmd)->dissector, key_type,\
+					  (flow_cmd)->key)
+#define GET_MASK(flow_cmd, key_type)					\
+		skb_flow_dissector_target((flow_cmd)->dissector, key_type,\
+					  (flow_cmd)->mask)
+
+static int bnxt_tc_parse_flow(struct bnxt *bp,
+			      struct tc_cls_flower_offload *tc_flow_cmd,
+			      struct bnxt_tc_flow *flow)
+{
+	struct flow_dissector *dissector = tc_flow_cmd->dissector;
+	u16 addr_type = 0;
+
+	/* KEY_CONTROL and KEY_BASIC are needed for forming a meaningful key */
+	if ((dissector->used_keys & BIT(FLOW_DISSECTOR_KEY_CONTROL)) == 0 ||
+	    (dissector->used_keys & BIT(FLOW_DISSECTOR_KEY_BASIC)) == 0) {
+		netdev_info(bp->dev, "cannot form TC key: used_keys = 0x%x",
+			    dissector->used_keys);
+		return -EOPNOTSUPP;
+	}
+
+	if (dissector_uses_key(dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
+		struct flow_dissector_key_control *key =
+			GET_KEY(tc_flow_cmd, FLOW_DISSECTOR_KEY_CONTROL);
+
+		addr_type = key->addr_type;
+	}
+
+	if (dissector_uses_key(dissector, FLOW_DISSECTOR_KEY_BASIC)) {
+		struct flow_dissector_key_basic *key =
+			GET_KEY(tc_flow_cmd, FLOW_DISSECTOR_KEY_BASIC);
+		struct flow_dissector_key_basic *mask =
+			GET_MASK(tc_flow_cmd, FLOW_DISSECTOR_KEY_BASIC);
+
+		flow->l2_key.ether_type = key->n_proto;
+		flow->l2_mask.ether_type = mask->n_proto;
+
+		if (key->n_proto == htons(ETH_P_IP) ||
+		    key->n_proto == htons(ETH_P_IPV6)) {
+			flow->l4_key.ip_proto = key->ip_proto;
+			flow->l4_mask.ip_proto = mask->ip_proto;
+		}
+	}
+
+	if (dissector_uses_key(dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
+		struct flow_dissector_key_eth_addrs *key =
+			GET_KEY(tc_flow_cmd, FLOW_DISSECTOR_KEY_ETH_ADDRS);
+		struct flow_dissector_key_eth_addrs *mask =
+			GET_MASK(tc_flow_cmd, FLOW_DISSECTOR_KEY_ETH_ADDRS);
+
+		flow->flags |= BNXT_TC_FLOW_FLAGS_ETH_ADDRS;
+		ether_addr_copy(flow->l2_key.dmac, key->dst);
+		ether_addr_copy(flow->l2_mask.dmac, mask->dst);
+		ether_addr_copy(flow->l2_key.smac, key->src);
+		ether_addr_copy(flow->l2_mask.smac, mask->src);
+	}
+
+	if (dissector_uses_key(dissector, FLOW_DISSECTOR_KEY_VLAN)) {
+		struct flow_dissector_key_vlan *key =
+			GET_KEY(tc_flow_cmd, FLOW_DISSECTOR_KEY_VLAN);
+		struct flow_dissector_key_vlan *mask =
+			GET_MASK(tc_flow_cmd, FLOW_DISSECTOR_KEY_VLAN);
+
+		flow->l2_key.inner_vlan_tci =
+		   cpu_to_be16(VLAN_TCI(key->vlan_id, key->vlan_priority));
+		flow->l2_mask.inner_vlan_tci =
+		   cpu_to_be16((VLAN_TCI(mask->vlan_id, mask->vlan_priority)));
+		flow->l2_key.inner_vlan_tpid = htons(ETH_P_8021Q);
+		flow->l2_mask.inner_vlan_tpid = htons(0xffff);
+		flow->l2_key.num_vlans = 1;
+	}
+
+	if (dissector_uses_key(dissector, FLOW_DISSECTOR_KEY_IPV4_ADDRS)) {
+		struct flow_dissector_key_ipv4_addrs *key =
+			GET_KEY(tc_flow_cmd, FLOW_DISSECTOR_KEY_IPV4_ADDRS);
+		struct flow_dissector_key_ipv4_addrs *mask =
+			GET_MASK(tc_flow_cmd, FLOW_DISSECTOR_KEY_IPV4_ADDRS);
+
+		flow->flags |= BNXT_TC_FLOW_FLAGS_IPV4_ADDRS;
+		flow->l3_key.ipv4.daddr.s_addr = key->dst;
+		flow->l3_mask.ipv4.daddr.s_addr = mask->dst;
+		flow->l3_key.ipv4.saddr.s_addr = key->src;
+		flow->l3_mask.ipv4.saddr.s_addr = mask->src;
+	} else if (dissector_uses_key(dissector,
+				      FLOW_DISSECTOR_KEY_IPV6_ADDRS)) {
+		struct flow_dissector_key_ipv6_addrs *key =
+			GET_KEY(tc_flow_cmd, FLOW_DISSECTOR_KEY_IPV6_ADDRS);
+		struct flow_dissector_key_ipv6_addrs *mask =
+			GET_MASK(tc_flow_cmd, FLOW_DISSECTOR_KEY_IPV6_ADDRS);
+
+		flow->flags |= BNXT_TC_FLOW_FLAGS_IPV6_ADDRS;
+		flow->l3_key.ipv6.daddr = key->dst;
+		flow->l3_mask.ipv6.daddr = mask->dst;
+		flow->l3_key.ipv6.saddr = key->src;
+		flow->l3_mask.ipv6.saddr = mask->src;
+	}
+
+	if (dissector_uses_key(dissector, FLOW_DISSECTOR_KEY_PORTS)) {
+		struct flow_dissector_key_ports *key =
+			GET_KEY(tc_flow_cmd, FLOW_DISSECTOR_KEY_PORTS);
+		struct flow_dissector_key_ports *mask =
+			GET_MASK(tc_flow_cmd, FLOW_DISSECTOR_KEY_PORTS);
+
+		flow->flags |= BNXT_TC_FLOW_FLAGS_PORTS;
+		flow->l4_key.ports.dport = key->dst;
+		flow->l4_mask.ports.dport = mask->dst;
+		flow->l4_key.ports.sport = key->src;
+		flow->l4_mask.ports.sport = mask->src;
+	}
+
+	if (dissector_uses_key(dissector, FLOW_DISSECTOR_KEY_ICMP)) {
+		struct flow_dissector_key_icmp *key =
+			GET_KEY(tc_flow_cmd, FLOW_DISSECTOR_KEY_ICMP);
+		struct flow_dissector_key_icmp *mask =
+			GET_MASK(tc_flow_cmd, FLOW_DISSECTOR_KEY_ICMP);
+
+		flow->flags |= BNXT_TC_FLOW_FLAGS_ICMP;
+		flow->l4_key.icmp.type = key->type;
+		flow->l4_key.icmp.code = key->code;
+		flow->l4_mask.icmp.type = mask->type;
+		flow->l4_mask.icmp.code = mask->code;
+	}
+
+	return bnxt_tc_parse_actions(bp, &flow->actions, tc_flow_cmd->exts);
+}
+
+static int bnxt_hwrm_cfa_flow_free(struct bnxt *bp, __le16 flow_handle)
+{
+	struct hwrm_cfa_flow_free_input req = { 0 };
+	int rc;
+
+	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_FLOW_FREE, -1, -1);
+	req.flow_handle = flow_handle;
+
+	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	if (rc)
+		netdev_info(bp->dev, "Error: %s: flow_handle=0x%x rc=%d",
+			    __func__, flow_handle, rc);
+	return rc;
+}
+
+static int ipv6_mask_len(struct in6_addr *mask)
+{
+	int mask_len = 0, i;
+
+	for (i = 0; i < 4; i++)
+		mask_len += inet_mask_len(mask->s6_addr32[i]);
+
+	return mask_len;
+}
+
+static bool is_wildcard(void *mask, int len)
+{
+	const u8 *p = mask;
+	int i;
+
+	for (i = 0; i < len; i++) {
+		if (p[i] != 0)
+			return false;
+	}
+	return true;
+}
+
+static int bnxt_hwrm_cfa_flow_alloc(struct bnxt *bp, struct bnxt_tc_flow *flow,
+				    __le16 ref_flow_handle, __le16 *flow_handle)
+{
+	struct hwrm_cfa_flow_alloc_output *resp = bp->hwrm_cmd_resp_addr;
+	struct bnxt_tc_actions *actions = &flow->actions;
+	struct bnxt_tc_l3_key *l3_mask = &flow->l3_mask;
+	struct bnxt_tc_l3_key *l3_key = &flow->l3_key;
+	struct hwrm_cfa_flow_alloc_input req = { 0 };
+	u16 flow_flags = 0, action_flags = 0;
+	int rc;
+
+	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_FLOW_ALLOC, -1, -1);
+
+	req.src_fid = cpu_to_le16(flow->src_fid);
+	req.ref_flow_handle = ref_flow_handle;
+	req.ethertype = flow->l2_key.ether_type;
+	req.ip_proto = flow->l4_key.ip_proto;
+
+	if (flow->flags & BNXT_TC_FLOW_FLAGS_ETH_ADDRS) {
+		memcpy(req.dmac, flow->l2_key.dmac, ETH_ALEN);
+		memcpy(req.smac, flow->l2_key.smac, ETH_ALEN);
+	}
+
+	if (flow->l2_key.num_vlans > 0) {
+		flow_flags |= CFA_FLOW_ALLOC_REQ_FLAGS_NUM_VLAN_ONE;
+		/* FW expects the inner_vlan_tci value to be set
+		 * in outer_vlan_tci when num_vlans is 1 (which is
+		 * always the case in TC.)
+		 */
+		req.outer_vlan_tci = flow->l2_key.inner_vlan_tci;
+	}
+
+	/* If all IP and L4 fields are wildcarded then this is an L2 flow */
+	if (is_wildcard(&l3_mask, sizeof(l3_mask)) &&
+	    is_wildcard(&flow->l4_mask, sizeof(flow->l4_mask))) {
+		flow_flags |= CFA_FLOW_ALLOC_REQ_FLAGS_FLOWTYPE_L2;
+	} else {
+		flow_flags |= flow->l2_key.ether_type == htons(ETH_P_IP) ?
+				CFA_FLOW_ALLOC_REQ_FLAGS_FLOWTYPE_IPV4 :
+				CFA_FLOW_ALLOC_REQ_FLAGS_FLOWTYPE_IPV6;
+
+		if (flow->flags & BNXT_TC_FLOW_FLAGS_IPV4_ADDRS) {
+			req.ip_dst[0] = l3_key->ipv4.daddr.s_addr;
+			req.ip_dst_mask_len =
+				inet_mask_len(l3_mask->ipv4.daddr.s_addr);
+			req.ip_src[0] = l3_key->ipv4.saddr.s_addr;
+			req.ip_src_mask_len =
+				inet_mask_len(l3_mask->ipv4.saddr.s_addr);
+		} else if (flow->flags & BNXT_TC_FLOW_FLAGS_IPV6_ADDRS) {
+			memcpy(req.ip_dst, l3_key->ipv6.daddr.s6_addr32,
+			       sizeof(req.ip_dst));
+			req.ip_dst_mask_len =
+					ipv6_mask_len(&l3_mask->ipv6.daddr);
+			memcpy(req.ip_src, l3_key->ipv6.saddr.s6_addr32,
+			       sizeof(req.ip_src));
+			req.ip_src_mask_len =
+					ipv6_mask_len(&l3_mask->ipv6.saddr);
+		}
+	}
+
+	if (flow->flags & BNXT_TC_FLOW_FLAGS_PORTS) {
+		req.l4_src_port = flow->l4_key.ports.sport;
+		req.l4_src_port_mask = flow->l4_mask.ports.sport;
+		req.l4_dst_port = flow->l4_key.ports.dport;
+		req.l4_dst_port_mask = flow->l4_mask.ports.dport;
+	} else if (flow->flags & BNXT_TC_FLOW_FLAGS_ICMP) {
+		/* l4 ports serve as type/code when ip_proto is ICMP */
+		req.l4_src_port = htons(flow->l4_key.icmp.type);
+		req.l4_src_port_mask = htons(flow->l4_mask.icmp.type);
+		req.l4_dst_port = htons(flow->l4_key.icmp.code);
+		req.l4_dst_port_mask = htons(flow->l4_mask.icmp.code);
+	}
+	req.flags = cpu_to_le16(flow_flags);
+
+	if (actions->flags & BNXT_TC_ACTION_FLAG_DROP) {
+		action_flags |= CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_DROP;
+	} else {
+		if (actions->flags & BNXT_TC_ACTION_FLAG_FWD) {
+			action_flags |= CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_FWD;
+			req.dst_fid = cpu_to_le16(actions->dst_fid);
+		}
+		if (actions->flags & BNXT_TC_ACTION_FLAG_PUSH_VLAN) {
+			action_flags |=
+			    CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_L2_HEADER_REWRITE;
+			req.l2_rewrite_vlan_tpid = actions->push_vlan_tpid;
+			req.l2_rewrite_vlan_tci = actions->push_vlan_tci;
+			memcpy(&req.l2_rewrite_dmac, &req.dmac, ETH_ALEN);
+			memcpy(&req.l2_rewrite_smac, &req.smac, ETH_ALEN);
+		}
+		if (actions->flags & BNXT_TC_ACTION_FLAG_POP_VLAN) {
+			action_flags |=
+			    CFA_FLOW_ALLOC_REQ_ACTION_FLAGS_L2_HEADER_REWRITE;
+			/* Rewrite config with tpid = 0 implies vlan pop */
+			req.l2_rewrite_vlan_tpid = 0;
+			memcpy(&req.l2_rewrite_dmac, &req.dmac, ETH_ALEN);
+			memcpy(&req.l2_rewrite_smac, &req.smac, ETH_ALEN);
+		}
+	}
+	req.action_flags = cpu_to_le16(action_flags);
+
+	mutex_lock(&bp->hwrm_cmd_lock);
+
+	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	if (!rc)
+		*flow_handle = resp->flow_handle;
+
+	mutex_unlock(&bp->hwrm_cmd_lock);
+
+	return rc;
+}
+
+/* Add val to accum while handling a possible wraparound
+ * of val. Eventhough val is of type u64, its actual width
+ * is denoted by mask and will wrap-around beyond that width.
+ */
+static void accumulate_val(u64 *accum, u64 val, u64 mask)
+{
+#define low_bits(x, mask)		((x) & (mask))
+#define high_bits(x, mask)		((x) & ~(mask))
+	bool wrapped = val < low_bits(*accum, mask);
+
+	*accum = high_bits(*accum, mask) + val;
+	if (wrapped)
+		*accum += (mask + 1);
+}
+
+/* The HW counters' width is much less than 64bits.
+ * Handle possible wrap-around while updating the stat counters
+ */
+static void bnxt_flow_stats_fix_wraparound(struct bnxt_tc_info *tc_info,
+					   struct bnxt_tc_flow_stats *stats,
+					   struct bnxt_tc_flow_stats *hw_stats)
+{
+	accumulate_val(&stats->bytes, hw_stats->bytes, tc_info->bytes_mask);
+	accumulate_val(&stats->packets, hw_stats->packets,
+		       tc_info->packets_mask);
+}
+
+/* Fix possible wraparound of the stats queried from HW, calculate
+ * the delta from prev_stats, and also update the prev_stats.
+ * The HW flow stats are fetched under the hwrm_cmd_lock mutex.
+ * This routine is best called while under the mutex so that the
+ * stats processing happens atomically.
+ */
+static void bnxt_flow_stats_calc(struct bnxt_tc_info *tc_info,
+				 struct bnxt_tc_flow *flow,
+				 struct bnxt_tc_flow_stats *stats)
+{
+	struct bnxt_tc_flow_stats *acc_stats, *prev_stats;
+
+	acc_stats = &flow->stats;
+	bnxt_flow_stats_fix_wraparound(tc_info, acc_stats, stats);
+
+	prev_stats = &flow->prev_stats;
+	stats->bytes = acc_stats->bytes - prev_stats->bytes;
+	stats->packets = acc_stats->packets - prev_stats->packets;
+	*prev_stats = *acc_stats;
+}
+
+static int bnxt_hwrm_cfa_flow_stats_get(struct bnxt *bp,
+					__le16 flow_handle,
+					struct bnxt_tc_flow *flow,
+					struct bnxt_tc_flow_stats *stats)
+{
+	struct hwrm_cfa_flow_stats_output *resp = bp->hwrm_cmd_resp_addr;
+	struct hwrm_cfa_flow_stats_input req = { 0 };
+	int rc;
+
+	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_FLOW_STATS, -1, -1);
+	req.num_flows = cpu_to_le16(1);
+	req.flow_handle_0 = flow_handle;
+
+	mutex_lock(&bp->hwrm_cmd_lock);
+	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	if (!rc) {
+		stats->packets = le64_to_cpu(resp->packet_0);
+		stats->bytes = le64_to_cpu(resp->byte_0);
+		bnxt_flow_stats_calc(&bp->tc_info, flow, stats);
+	} else {
+		netdev_info(bp->dev, "error rc=%d", rc);
+	}
+
+	mutex_unlock(&bp->hwrm_cmd_lock);
+	return rc;
+}
+
+static int bnxt_tc_put_l2_node(struct bnxt *bp,
+			       struct bnxt_tc_flow_node *flow_node)
+{
+	struct bnxt_tc_l2_node *l2_node = flow_node->l2_node;
+	struct bnxt_tc_info *tc_info = &bp->tc_info;
+	int rc;
+
+	/* remove flow_node from the L2 shared flow list */
+	list_del(&flow_node->l2_list_node);
+	if (--l2_node->refcount == 0) {
+		rc =  rhashtable_remove_fast(&tc_info->l2_table, &l2_node->node,
+					     tc_info->l2_ht_params);
+		if (rc)
+			netdev_err(bp->dev,
+				   "Error: %s: rhashtable_remove_fast: %d",
+				   __func__, rc);
+		kfree_rcu(l2_node, rcu);
+	}
+	return 0;
+}
+
+static struct bnxt_tc_l2_node *
+bnxt_tc_get_l2_node(struct bnxt *bp, struct rhashtable *l2_table,
+		    struct rhashtable_params ht_params,
+		    struct bnxt_tc_l2_key *l2_key)
+{
+	struct bnxt_tc_l2_node *l2_node;
+	int rc;
+
+	l2_node = rhashtable_lookup_fast(l2_table, l2_key, ht_params);
+	if (!l2_node) {
+		l2_node = kzalloc(sizeof(*l2_node), GFP_KERNEL);
+		if (!l2_node) {
+			rc = -ENOMEM;
+			return NULL;
+		}
+
+		l2_node->key = *l2_key;
+		rc = rhashtable_insert_fast(l2_table, &l2_node->node,
+					    ht_params);
+		if (rc) {
+			kfree(l2_node);
+			netdev_err(bp->dev,
+				   "Error: %s: rhashtable_insert_fast: %d",
+				   __func__, rc);
+			return NULL;
+		}
+		INIT_LIST_HEAD(&l2_node->common_l2_flows);
+	}
+	return l2_node;
+}
+
+/* Get the ref_flow_handle for a flow by checking if there are any other
+ * flows that share the same L2 key as this flow.
+ */
+static int
+bnxt_tc_get_ref_flow_handle(struct bnxt *bp, struct bnxt_tc_flow *flow,
+			    struct bnxt_tc_flow_node *flow_node,
+			    __le16 *ref_flow_handle)
+{
+	struct bnxt_tc_info *tc_info = &bp->tc_info;
+	struct bnxt_tc_flow_node *ref_flow_node;
+	struct bnxt_tc_l2_node *l2_node;
+
+	l2_node = bnxt_tc_get_l2_node(bp, &tc_info->l2_table,
+				      tc_info->l2_ht_params,
+				      &flow->l2_key);
+	if (!l2_node)
+		return -1;
+
+	/* If any other flow is using this l2_node, use it's flow_handle
+	 * as the ref_flow_handle
+	 */
+	if (l2_node->refcount > 0) {
+		ref_flow_node = list_first_entry(&l2_node->common_l2_flows,
+						 struct bnxt_tc_flow_node,
+						 l2_list_node);
+		*ref_flow_handle = ref_flow_node->flow_handle;
+	} else {
+		*ref_flow_handle = cpu_to_le16(0xffff);
+	}
+
+	/* Insert the l2_node into the flow_node so that subsequent flows
+	 * with a matching l2 key can use the flow_handle of this flow
+	 * as their ref_flow_handle
+	 */
+	flow_node->l2_node = l2_node;
+	list_add(&flow_node->l2_list_node, &l2_node->common_l2_flows);
+	l2_node->refcount++;
+	return 0;
+}
+
+/* After the flow parsing is done, this routine is used for checking
+ * if there are any aspects of the flow that prevent it from being
+ * offloaded.
+ */
+static bool bnxt_tc_can_offload(struct bnxt *bp, struct bnxt_tc_flow *flow)
+{
+	/* If L4 ports are specified then ip_proto must be TCP or UDP */
+	if ((flow->flags & BNXT_TC_FLOW_FLAGS_PORTS) &&
+	    (flow->l4_key.ip_proto != IPPROTO_TCP &&
+	     flow->l4_key.ip_proto != IPPROTO_UDP)) {
+		netdev_info(bp->dev, "Cannot offload non-TCP/UDP (%d) ports",
+			    flow->l4_key.ip_proto);
+		return false;
+	}
+
+	return true;
+}
+
+static int __bnxt_tc_del_flow(struct bnxt *bp,
+			      struct bnxt_tc_flow_node *flow_node)
+{
+	struct bnxt_tc_info *tc_info = &bp->tc_info;
+	int rc;
+
+	/* send HWRM cmd to free the flow-id */
+	bnxt_hwrm_cfa_flow_free(bp, flow_node->flow_handle);
+
+	mutex_lock(&tc_info->lock);
+
+	/* release reference to l2 node */
+	bnxt_tc_put_l2_node(bp, flow_node);
+
+	mutex_unlock(&tc_info->lock);
+
+	rc = rhashtable_remove_fast(&tc_info->flow_table, &flow_node->node,
+				    tc_info->flow_ht_params);
+	if (rc)
+		netdev_err(bp->dev, "Error: %s: rhashtable_remove_fast rc=%d",
+			   __func__, rc);
+
+	kfree_rcu(flow_node, rcu);
+	return 0;
+}
+
+/* Add a new flow or replace an existing flow.
+ * Notes on locking:
+ * There are essentially two critical sections here.
+ * 1. while adding a new flow
+ *    a) lookup l2-key
+ *    b) issue HWRM cmd and get flow_handle
+ *    c) link l2-key with flow
+ * 2. while deleting a flow
+ *    a) unlinking l2-key from flow
+ * A lock is needed to protect these two critical sections.
+ *
+ * The hash-tables are already protected by the rhashtable API.
+ */
+static int bnxt_tc_add_flow(struct bnxt *bp, u16 src_fid,
+			    struct tc_cls_flower_offload *tc_flow_cmd)
+{
+	struct bnxt_tc_flow_node *new_node, *old_node;
+	struct bnxt_tc_info *tc_info = &bp->tc_info;
+	struct bnxt_tc_flow *flow;
+	__le16 ref_flow_handle;
+	int rc;
+
+	/* allocate memory for the new flow and it's node */
+	new_node = kzalloc(sizeof(*new_node), GFP_KERNEL);
+	if (!new_node) {
+		rc = -ENOMEM;
+		goto done;
+	}
+	new_node->cookie = tc_flow_cmd->cookie;
+	flow = &new_node->flow;
+
+	rc = bnxt_tc_parse_flow(bp, tc_flow_cmd, flow);
+	if (rc)
+		goto free_node;
+	flow->src_fid = src_fid;
+
+	if (!bnxt_tc_can_offload(bp, flow)) {
+		rc = -ENOSPC;
+		goto free_node;
+	}
+
+	/* If a flow exists with the same cookie, delete it */
+	old_node = rhashtable_lookup_fast(&tc_info->flow_table,
+					  &tc_flow_cmd->cookie,
+					  tc_info->flow_ht_params);
+	if (old_node)
+		__bnxt_tc_del_flow(bp, old_node);
+
+	/* Check if the L2 part of the flow has been offloaded already.
+	 * If so, bump up it's refcnt and get it's reference handle.
+	 */
+	mutex_lock(&tc_info->lock);
+	rc = bnxt_tc_get_ref_flow_handle(bp, flow, new_node, &ref_flow_handle);
+	if (rc)
+		goto unlock;
+
+	/* send HWRM cmd to alloc the flow */
+	rc = bnxt_hwrm_cfa_flow_alloc(bp, flow, ref_flow_handle,
+				      &new_node->flow_handle);
+	if (rc)
+		goto put_l2;
+
+	/* add new flow to flow-table */
+	rc = rhashtable_insert_fast(&tc_info->flow_table, &new_node->node,
+				    tc_info->flow_ht_params);
+	if (rc)
+		goto hwrm_flow_free;
+
+	mutex_unlock(&tc_info->lock);
+	return 0;
+
+hwrm_flow_free:
+	bnxt_hwrm_cfa_flow_free(bp, new_node->flow_handle);
+put_l2:
+	bnxt_tc_put_l2_node(bp, new_node);
+unlock:
+	mutex_unlock(&tc_info->lock);
+free_node:
+	kfree(new_node);
+done:
+	netdev_err(bp->dev, "Error: %s: cookie=0x%lx error=%d",
+		   __func__, tc_flow_cmd->cookie, rc);
+	return rc;
+}
+
+static int bnxt_tc_del_flow(struct bnxt *bp,
+			    struct tc_cls_flower_offload *tc_flow_cmd)
+{
+	struct bnxt_tc_info *tc_info = &bp->tc_info;
+	struct bnxt_tc_flow_node *flow_node;
+
+	flow_node = rhashtable_lookup_fast(&tc_info->flow_table,
+					   &tc_flow_cmd->cookie,
+					   tc_info->flow_ht_params);
+	if (!flow_node) {
+		netdev_info(bp->dev, "ERROR: no flow_node for cookie %lx",
+			    tc_flow_cmd->cookie);
+		return -EINVAL;
+	}
+
+	return __bnxt_tc_del_flow(bp, flow_node);
+}
+
+static int bnxt_tc_get_flow_stats(struct bnxt *bp,
+				  struct tc_cls_flower_offload *tc_flow_cmd)
+{
+	struct bnxt_tc_info *tc_info = &bp->tc_info;
+	struct bnxt_tc_flow_node *flow_node;
+	struct bnxt_tc_flow_stats stats;
+	int rc;
+
+	flow_node = rhashtable_lookup_fast(&tc_info->flow_table,
+					   &tc_flow_cmd->cookie,
+					   tc_info->flow_ht_params);
+	if (!flow_node) {
+		netdev_info(bp->dev, "Error: no flow_node for cookie %lx",
+			    tc_flow_cmd->cookie);
+		return -1;
+	}
+
+	rc = bnxt_hwrm_cfa_flow_stats_get(bp, flow_node->flow_handle,
+					  &flow_node->flow, &stats);
+	if (rc)
+		return rc;
+
+	tcf_exts_stats_update(tc_flow_cmd->exts, stats.bytes, stats.packets, 0);
+	return 0;
+}
+
+int bnxt_tc_setup_flower(struct bnxt *bp, u16 src_fid,
+			 struct tc_cls_flower_offload *cls_flower)
+{
+	int rc = 0;
+
+	switch (cls_flower->command) {
+	case TC_CLSFLOWER_REPLACE:
+		rc = bnxt_tc_add_flow(bp, src_fid, cls_flower);
+		break;
+
+	case TC_CLSFLOWER_DESTROY:
+		rc = bnxt_tc_del_flow(bp, cls_flower);
+		break;
+
+	case TC_CLSFLOWER_STATS:
+		rc = bnxt_tc_get_flow_stats(bp, cls_flower);
+		break;
+	}
+	return rc;
+}
+
+static const struct rhashtable_params bnxt_tc_flow_ht_params = {
+	.head_offset = offsetof(struct bnxt_tc_flow_node, node),
+	.key_offset = offsetof(struct bnxt_tc_flow_node, cookie),
+	.key_len = sizeof(((struct bnxt_tc_flow_node *)0)->cookie),
+	.automatic_shrinking = true
+};
+
+static const struct rhashtable_params bnxt_tc_l2_ht_params = {
+	.head_offset = offsetof(struct bnxt_tc_l2_node, node),
+	.key_offset = offsetof(struct bnxt_tc_l2_node, key),
+	.key_len = BNXT_TC_L2_KEY_LEN,
+	.automatic_shrinking = true
+};
+
+/* convert counter width in bits to a mask */
+#define mask(width)		((u64)~0 >> (64 - (width)))
+
+int bnxt_init_tc(struct bnxt *bp)
+{
+	struct bnxt_tc_info *tc_info = &bp->tc_info;
+	int rc;
+
+	if (bp->hwrm_spec_code < 0x10800) {
+		netdev_warn(bp->dev,
+			    "Firmware does not support TC flower offload.\n");
+		return -ENOTSUPP;
+	}
+	mutex_init(&tc_info->lock);
+
+	/* Counter widths are programmed by FW */
+	tc_info->bytes_mask = mask(36);
+	tc_info->packets_mask = mask(28);
+
+	tc_info->flow_ht_params = bnxt_tc_flow_ht_params;
+	rc = rhashtable_init(&tc_info->flow_table, &tc_info->flow_ht_params);
+	if (rc)
+		return rc;
+
+	tc_info->l2_ht_params = bnxt_tc_l2_ht_params;
+	rc = rhashtable_init(&tc_info->l2_table, &tc_info->l2_ht_params);
+	if (rc)
+		goto destroy_flow_table;
+
+	tc_info->enabled = true;
+	bp->dev->hw_features |= NETIF_F_HW_TC;
+	bp->dev->features |= NETIF_F_HW_TC;
+	return 0;
+
+destroy_flow_table:
+	rhashtable_destroy(&tc_info->flow_table);
+	return rc;
+}
+
+void bnxt_shutdown_tc(struct bnxt *bp)
+{
+	struct bnxt_tc_info *tc_info = &bp->tc_info;
+
+	if (!tc_info->enabled)
+		return;
+
+	rhashtable_destroy(&tc_info->flow_table);
+	rhashtable_destroy(&tc_info->l2_table);
+}
+
+#else
+#endif

drivers/net/ethernet/broadcom/bnxt/bnxt_tc.h

+/* Broadcom NetXtreme-C/E network driver.
+ *
+ * Copyright (c) 2017 Broadcom Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef BNXT_TC_H
+#define BNXT_TC_H
+
+#ifdef CONFIG_BNXT_FLOWER_OFFLOAD
+
+/* Structs used for storing the filter/actions of the TC cmd.
+ */
+struct bnxt_tc_l2_key {
+	u8		dmac[ETH_ALEN];
+	u8		smac[ETH_ALEN];
+	__be16		inner_vlan_tpid;
+	__be16		inner_vlan_tci;
+	__be16		ether_type;
+	u8		num_vlans;
+};
+
+struct bnxt_tc_l3_key {
+	union {
+		struct {
+			struct in_addr daddr;
+			struct in_addr saddr;
+		} ipv4;
+		struct {
+			struct in6_addr daddr;
+			struct in6_addr saddr;
+		} ipv6;
+	};
+};
+
+struct bnxt_tc_l4_key {
+	u8  ip_proto;
+	union {
+		struct {
+			__be16 sport;
+			__be16 dport;
+		} ports;
+		struct {
+			u8 type;
+			u8 code;
+		} icmp;
+	};
+};
+
+struct bnxt_tc_actions {
+	u32				flags;
+#define BNXT_TC_ACTION_FLAG_FWD			BIT(0)
+#define BNXT_TC_ACTION_FLAG_FWD_VXLAN		BIT(1)
+#define BNXT_TC_ACTION_FLAG_PUSH_VLAN		BIT(3)
+#define BNXT_TC_ACTION_FLAG_POP_VLAN		BIT(4)
+#define BNXT_TC_ACTION_FLAG_DROP		BIT(5)
+
+	u16				dst_fid;
+	struct net_device		*dst_dev;
+	__be16				push_vlan_tpid;
+	__be16				push_vlan_tci;
+};
+
+struct bnxt_tc_flow_stats {
+	u64		packets;
+	u64		bytes;
+};
+
+struct bnxt_tc_flow {
+	u32				flags;
+#define BNXT_TC_FLOW_FLAGS_ETH_ADDRS		BIT(1)
+#define BNXT_TC_FLOW_FLAGS_IPV4_ADDRS		BIT(2)
+#define BNXT_TC_FLOW_FLAGS_IPV6_ADDRS		BIT(3)
+#define BNXT_TC_FLOW_FLAGS_PORTS		BIT(4)
+#define BNXT_TC_FLOW_FLAGS_ICMP			BIT(5)
+
+	/* flow applicable to pkts ingressing on this fid */
+	u16				src_fid;
+	struct bnxt_tc_l2_key		l2_key;
+	struct bnxt_tc_l2_key		l2_mask;
+	struct bnxt_tc_l3_key		l3_key;
+	struct bnxt_tc_l3_key		l3_mask;
+	struct bnxt_tc_l4_key		l4_key;
+	struct bnxt_tc_l4_key		l4_mask;
+
+	struct bnxt_tc_actions		actions;
+
+	/* updated stats accounting for hw-counter wrap-around */
+	struct bnxt_tc_flow_stats	stats;
+	/* previous snap-shot of stats */
+	struct bnxt_tc_flow_stats	prev_stats;
+	unsigned long			lastused; /* jiffies */
+};
+
+/* L2 hash table
+ * This data-struct is used for L2-flow table.
+ * The L2 part of a flow is stored in a hash table.
+ * A flow that shares the same L2 key/mask with an
+ * already existing flow must refer to it's flow handle.
+ */
+struct bnxt_tc_l2_node {
+	/* hash key: first 16b of key */
+#define BNXT_TC_L2_KEY_LEN			16
+	struct bnxt_tc_l2_key	key;
+	struct rhash_head	node;
+
+	/* a linked list of flows that share the same l2 key */
+	struct list_head	common_l2_flows;
+
+	/* number of flows sharing the l2 key */
+	u16			refcount;
+
+	struct rcu_head		rcu;
+};
+
+struct bnxt_tc_flow_node {
+	/* hash key: provided by TC */
+	unsigned long			cookie;
+	struct rhash_head		node;
+
+	struct bnxt_tc_flow		flow;
+
+	__le16				flow_handle;
+
+	/* L2 node in l2 hashtable that shares flow's l2 key */
+	struct bnxt_tc_l2_node		*l2_node;
+	/* for the shared_flows list maintained in l2_node */
+	struct list_head		l2_list_node;
+
+	struct rcu_head			rcu;
+};
+
+int bnxt_tc_setup_flower(struct bnxt *bp, u16 src_fid,
+			 struct tc_cls_flower_offload *cls_flower);
+int bnxt_init_tc(struct bnxt *bp);
+void bnxt_shutdown_tc(struct bnxt *bp);
+
+#else /* CONFIG_BNXT_FLOWER_OFFLOAD */
+
+static inline int bnxt_tc_setup_flower(struct bnxt *bp, u16 src_fid,
+				       struct tc_cls_flower_offload *cls_flower)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline int bnxt_init_tc(struct bnxt *bp)
+{
+	return 0;
+}
+
+static inline void bnxt_shutdown_tc(struct bnxt *bp)
+{
+}
+#endif /* CONFIG_BNXT_FLOWER_OFFLOAD */
+#endif /* BNXT_TC_H */

drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c

@@ -11,10 +11,12 @@
 #include <linux/etherdevice.h>
 #include <linux/rtnetlink.h>
 #include <linux/jhash.h>
+#include <net/pkt_cls.h>
 
 #include "bnxt_hsi.h"
 #include "bnxt.h"
 #include "bnxt_vfr.h"
+#include "bnxt_tc.h"
 
 #ifdef CONFIG_BNXT_SRIOV
 
@@ -113,6 +115,21 @@ bnxt_vf_rep_get_stats64(struct net_device *dev,
 	stats->tx_bytes = vf_rep->tx_stats.bytes;
 }
 
+static int bnxt_vf_rep_setup_tc(struct net_device *dev, enum tc_setup_type type,
+				void *type_data)
+{
+	struct bnxt_vf_rep *vf_rep = netdev_priv(dev);
+	struct bnxt *bp = vf_rep->bp;
+	int vf_fid = bp->pf.vf[vf_rep->vf_idx].fw_fid;
+
+	switch (type) {
+	case TC_SETUP_CLSFLOWER:
+		return bnxt_tc_setup_flower(bp, vf_fid, type_data);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
 struct net_device *bnxt_get_vf_rep(struct bnxt *bp, u16 cfa_code)
 {
 	u16 vf_idx;
@@ -182,6 +199,7 @@ static const struct net_device_ops bnxt_vf_rep_netdev_ops = {
 	.ndo_stop		= bnxt_vf_rep_close,
 	.ndo_start_xmit		= bnxt_vf_rep_xmit,
 	.ndo_get_stats64	= bnxt_vf_rep_get_stats64,
+	.ndo_setup_tc		= bnxt_vf_rep_setup_tc,
 	.ndo_get_phys_port_name = bnxt_vf_rep_get_phys_port_name
 };
 
@@ -468,11 +486,11 @@ int bnxt_dl_register(struct bnxt *bp)
 		return -ENOMEM;
 	}
 
-	bnxt_link_bp_to_dl(dl, bp);
+	bnxt_link_bp_to_dl(bp, dl);
 	bp->eswitch_mode = DEVLINK_ESWITCH_MODE_LEGACY;
 	rc = devlink_register(dl, &bp->pdev->dev);
 	if (rc) {
-		bnxt_link_bp_to_dl(dl, NULL);
+		bnxt_link_bp_to_dl(bp, NULL);
 		devlink_free(dl);
 		netdev_warn(bp->dev, "devlink_register failed. rc=%d", rc);
 		return rc;

drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.h

@@ -24,13 +24,17 @@ static inline struct bnxt *bnxt_get_bp_from_dl(struct devlink *dl)
 	return ((struct bnxt_dl *)devlink_priv(dl))->bp;
 }
 
-static inline void bnxt_link_bp_to_dl(struct devlink *dl, struct bnxt *bp)
+/* To clear devlink pointer from bp, pass NULL dl */
+static inline void bnxt_link_bp_to_dl(struct bnxt *bp, struct devlink *dl)
 {
-	struct bnxt_dl *bp_dl = devlink_priv(dl);
+	bp->dl = dl;
 
-	bp_dl->bp = bp;
-	if (bp)
-		bp->dl = dl;
+	/* add a back pointer in dl to bp */
+	if (dl) {
+		struct bnxt_dl *bp_dl = devlink_priv(dl);
+
+		bp_dl->bp = bp;
+	}
 }
 
 int bnxt_dl_register(struct bnxt *bp);
@@ -41,6 +45,14 @@ void bnxt_vf_reps_open(struct bnxt *bp);
 void bnxt_vf_rep_rx(struct bnxt *bp, struct sk_buff *skb);
 struct net_device *bnxt_get_vf_rep(struct bnxt *bp, u16 cfa_code);
 
+static inline u16 bnxt_vf_rep_get_fid(struct net_device *dev)
+{
+	struct bnxt_vf_rep *vf_rep = netdev_priv(dev);
+	struct bnxt *bp = vf_rep->bp;
+
+	return bp->pf.vf[vf_rep->vf_idx].fw_fid;
+}
+
 #else
 
 static inline int bnxt_dl_register(struct bnxt *bp)

drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c

@@ -169,8 +169,8 @@ static int bnxt_xdp_set(struct bnxt *bp, struct bpf_prog *prog)
 	tc = netdev_get_num_tc(dev);
 	if (!tc)
 		tc = 1;
-	rc = bnxt_reserve_rings(bp, bp->tx_nr_rings_per_tc, bp->rx_nr_rings,
-				true, tc, tx_xdp);
+	rc = bnxt_check_rings(bp, bp->tx_nr_rings_per_tc, bp->rx_nr_rings,
+			      true, tc, tx_xdp);
 	if (rc) {
 		netdev_warn(dev, "Unable to reserve enough TX rings to support XDP.\n");
 		return rc;