Merge branch 'bnxt_en-Driver-update-for-net-next'

Michael Chan says:

====================
bnxt_en: Driver update for net-next.

This patchset implements ethtool -X to setup user-defined RSS indirection
table.  The new infrastructure also allows the proper logical ring index
to be used to populate the RSS indirection when queried by ethtool -x.
Prior to these patches, we were incorrectly populating the output of
ethtool -x with internal ring IDs which would make no sense to the user.

The last 2 patches add some cleanups to the VLAN acceleration logic
and check the firmware capabilities before allowing VLAN acceleration
offloads.

v4: Move bnxt_get_rxfh_indir_size() fix to a new patch #2.
    Modify patch #7 to revert RSS map to default only when necessary.

v3: Use ALIGN() in patch 5.
    Add warning messages in patch 6.

v2: Some RSS indirection table changes requested by Jakub Kicinski.
====================
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -1614,7 +1614,7 @@ static inline struct sk_buff *bnxt_tpa_end(struct bnxt *bp,
 		skb_set_hash(skb, tpa_info->rss_hash, tpa_info->hash_type);
 
 	if ((tpa_info->flags2 & RX_CMP_FLAGS2_META_FORMAT_VLAN) &&
-	    (skb->dev->features & NETIF_F_HW_VLAN_CTAG_RX)) {
+	    (skb->dev->features & BNXT_HW_FEATURE_VLAN_ALL_RX)) {
 		u16 vlan_proto = tpa_info->metadata >>
 			RX_CMP_FLAGS2_METADATA_TPID_SFT;
 		u16 vtag = tpa_info->metadata & RX_CMP_FLAGS2_METADATA_TCI_MASK;
@@ -1832,7 +1832,7 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,
 
 	if ((rxcmp1->rx_cmp_flags2 &
 	     cpu_to_le32(RX_CMP_FLAGS2_META_FORMAT_VLAN)) &&
-	    (skb->dev->features & NETIF_F_HW_VLAN_CTAG_RX)) {
+	    (skb->dev->features & BNXT_HW_FEATURE_VLAN_ALL_RX)) {
 		u32 meta_data = le32_to_cpu(rxcmp1->rx_cmp_meta_data);
 		u16 vtag = meta_data & RX_CMP_FLAGS2_METADATA_TCI_MASK;
 		u16 vlan_proto = meta_data >> RX_CMP_FLAGS2_METADATA_TPID_SFT;
@@ -3538,7 +3538,7 @@ static void bnxt_free_vnic_attributes(struct bnxt *bp)
 		}
 
 		if (vnic->rss_table) {
-			dma_free_coherent(&pdev->dev, PAGE_SIZE,
+			dma_free_coherent(&pdev->dev, vnic->rss_table_size,
 					  vnic->rss_table,
 					  vnic->rss_table_dma_addr);
 			vnic->rss_table = NULL;
@@ -3603,7 +3603,13 @@ static int bnxt_alloc_vnic_attributes(struct bnxt *bp)
 			continue;
 
 		/* Allocate rss table and hash key */
-		vnic->rss_table = dma_alloc_coherent(&pdev->dev, PAGE_SIZE,
+		size = L1_CACHE_ALIGN(HW_HASH_INDEX_SIZE * sizeof(u16));
+		if (bp->flags & BNXT_FLAG_CHIP_P5)
+			size = L1_CACHE_ALIGN(BNXT_MAX_RSS_TABLE_SIZE_P5);
+
+		vnic->rss_table_size = size + HW_HASH_KEY_SIZE;
+		vnic->rss_table = dma_alloc_coherent(&pdev->dev,
+						     vnic->rss_table_size,
 						     &vnic->rss_table_dma_addr,
 						     GFP_KERNEL);
 		if (!vnic->rss_table) {
@@ -3611,8 +3617,6 @@ static int bnxt_alloc_vnic_attributes(struct bnxt *bp)
 			goto out;
 		}
 
-		size = L1_CACHE_ALIGN(HW_HASH_INDEX_SIZE * sizeof(u16));
-
 		vnic->rss_hash_key = ((void *)vnic->rss_table) + size;
 		vnic->rss_hash_key_dma_addr = vnic->rss_table_dma_addr + size;
 	}
@@ -4826,9 +4830,112 @@ static u16 bnxt_cp_ring_for_tx(struct bnxt *bp, struct bnxt_tx_ring_info *txr)
 	}
 }
 
+static int bnxt_alloc_rss_indir_tbl(struct bnxt *bp)
+{
+	int entries;
+
+	if (bp->flags & BNXT_FLAG_CHIP_P5)
+		entries = BNXT_MAX_RSS_TABLE_ENTRIES_P5;
+	else
+		entries = HW_HASH_INDEX_SIZE;
+
+	bp->rss_indir_tbl_entries = entries;
+	bp->rss_indir_tbl = kmalloc_array(entries, sizeof(*bp->rss_indir_tbl),
+					  GFP_KERNEL);
+	if (!bp->rss_indir_tbl)
+		return -ENOMEM;
+	return 0;
+}
+
+static void bnxt_set_dflt_rss_indir_tbl(struct bnxt *bp)
+{
+	u16 max_rings, max_entries, pad, i;
+
+	if (!bp->rx_nr_rings)
+		return;
+
+	if (BNXT_CHIP_TYPE_NITRO_A0(bp))
+		max_rings = bp->rx_nr_rings - 1;
+	else
+		max_rings = bp->rx_nr_rings;
+
+	max_entries = bnxt_get_rxfh_indir_size(bp->dev);
+
+	for (i = 0; i < max_entries; i++)
+		bp->rss_indir_tbl[i] = ethtool_rxfh_indir_default(i, max_rings);
+
+	pad = bp->rss_indir_tbl_entries - max_entries;
+	if (pad)
+		memset(&bp->rss_indir_tbl[i], 0, pad * sizeof(u16));
+}
+
+static u16 bnxt_get_max_rss_ring(struct bnxt *bp)
+{
+	u16 i, tbl_size, max_ring = 0;
+
+	if (!bp->rss_indir_tbl)
+		return 0;
+
+	tbl_size = bnxt_get_rxfh_indir_size(bp->dev);
+	for (i = 0; i < tbl_size; i++)
+		max_ring = max(max_ring, bp->rss_indir_tbl[i]);
+	return max_ring;
+}
+
+int bnxt_get_nr_rss_ctxs(struct bnxt *bp, int rx_rings)
+{
+	if (bp->flags & BNXT_FLAG_CHIP_P5)
+		return DIV_ROUND_UP(rx_rings, BNXT_RSS_TABLE_ENTRIES_P5);
+	if (BNXT_CHIP_TYPE_NITRO_A0(bp))
+		return 2;
+	return 1;
+}
+
+static void __bnxt_fill_hw_rss_tbl(struct bnxt *bp, struct bnxt_vnic_info *vnic)
+{
+	bool no_rss = !(vnic->flags & BNXT_VNIC_RSS_FLAG);
+	u16 i, j;
+
+	/* Fill the RSS indirection table with ring group ids */
+	for (i = 0, j = 0; i < HW_HASH_INDEX_SIZE; i++) {
+		if (!no_rss)
+			j = bp->rss_indir_tbl[i];
+		vnic->rss_table[i] = cpu_to_le16(vnic->fw_grp_ids[j]);
+	}
+}
+
+static void __bnxt_fill_hw_rss_tbl_p5(struct bnxt *bp,
+				      struct bnxt_vnic_info *vnic)
+{
+	__le16 *ring_tbl = vnic->rss_table;
+	struct bnxt_rx_ring_info *rxr;
+	u16 tbl_size, i;
+
+	tbl_size = bnxt_get_rxfh_indir_size(bp->dev);
+
+	for (i = 0; i < tbl_size; i++) {
+		u16 ring_id, j;
+
+		j = bp->rss_indir_tbl[i];
+		rxr = &bp->rx_ring[j];
+
+		ring_id = rxr->rx_ring_struct.fw_ring_id;
+		*ring_tbl++ = cpu_to_le16(ring_id);
+		ring_id = bnxt_cp_ring_for_rx(bp, rxr);
+		*ring_tbl++ = cpu_to_le16(ring_id);
+	}
+}
+
+static void bnxt_fill_hw_rss_tbl(struct bnxt *bp, struct bnxt_vnic_info *vnic)
+{
+	if (bp->flags & BNXT_FLAG_CHIP_P5)
+		__bnxt_fill_hw_rss_tbl_p5(bp, vnic);
+	else
+		__bnxt_fill_hw_rss_tbl(bp, vnic);
+}
+
 static int bnxt_hwrm_vnic_set_rss(struct bnxt *bp, u16 vnic_id, bool set_rss)
 {
-	u32 i, j, max_rings;
 	struct bnxt_vnic_info *vnic = &bp->vnic_info[vnic_id];
 	struct hwrm_vnic_rss_cfg_input req = {0};
 
@@ -4838,24 +4945,9 @@ static int bnxt_hwrm_vnic_set_rss(struct bnxt *bp, u16 vnic_id, bool set_rss)
 
 	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_VNIC_RSS_CFG, -1, -1);
 	if (set_rss) {
+		bnxt_fill_hw_rss_tbl(bp, vnic);
 		req.hash_type = cpu_to_le32(bp->rss_hash_cfg);
 		req.hash_mode_flags = VNIC_RSS_CFG_REQ_HASH_MODE_FLAGS_DEFAULT;
-		if (vnic->flags & BNXT_VNIC_RSS_FLAG) {
-			if (BNXT_CHIP_TYPE_NITRO_A0(bp))
-				max_rings = bp->rx_nr_rings - 1;
-			else
-				max_rings = bp->rx_nr_rings;
-		} else {
-			max_rings = 1;
-		}
-
-		/* Fill the RSS indirection table with ring group ids */
-		for (i = 0, j = 0; i < HW_HASH_INDEX_SIZE; i++, j++) {
-			if (j == max_rings)
-				j = 0;
-			vnic->rss_table[i] = cpu_to_le16(vnic->fw_grp_ids[j]);
-		}
-
 		req.ring_grp_tbl_addr = cpu_to_le64(vnic->rss_table_dma_addr);
 		req.hash_key_tbl_addr =
 			cpu_to_le64(vnic->rss_hash_key_dma_addr);
@@ -4867,9 +4959,9 @@ static int bnxt_hwrm_vnic_set_rss(struct bnxt *bp, u16 vnic_id, bool set_rss)
 static int bnxt_hwrm_vnic_set_rss_p5(struct bnxt *bp, u16 vnic_id, bool set_rss)
 {
 	struct bnxt_vnic_info *vnic = &bp->vnic_info[vnic_id];
-	u32 i, j, k, nr_ctxs, max_rings = bp->rx_nr_rings;
-	struct bnxt_rx_ring_info *rxr = &bp->rx_ring[0];
 	struct hwrm_vnic_rss_cfg_input req = {0};
+	dma_addr_t ring_tbl_map;
+	u32 i, nr_ctxs;
 
 	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_VNIC_RSS_CFG, -1, -1);
 	req.vnic_id = cpu_to_le16(vnic->fw_vnic_id);
@@ -4877,31 +4969,18 @@ static int bnxt_hwrm_vnic_set_rss_p5(struct bnxt *bp, u16 vnic_id, bool set_rss)
 		hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 		return 0;
 	}
+	bnxt_fill_hw_rss_tbl(bp, vnic);
 	req.hash_type = cpu_to_le32(bp->rss_hash_cfg);
 	req.hash_mode_flags = VNIC_RSS_CFG_REQ_HASH_MODE_FLAGS_DEFAULT;
-	req.ring_grp_tbl_addr = cpu_to_le64(vnic->rss_table_dma_addr);
 	req.hash_key_tbl_addr = cpu_to_le64(vnic->rss_hash_key_dma_addr);
-	nr_ctxs = DIV_ROUND_UP(bp->rx_nr_rings, 64);
-	for (i = 0, k = 0; i < nr_ctxs; i++) {
-		__le16 *ring_tbl = vnic->rss_table;
+	ring_tbl_map = vnic->rss_table_dma_addr;
+	nr_ctxs = bnxt_get_nr_rss_ctxs(bp, bp->rx_nr_rings);
+	for (i = 0; i < nr_ctxs; ring_tbl_map += BNXT_RSS_TABLE_SIZE_P5, i++) {
 		int rc;
 
+		req.ring_grp_tbl_addr = cpu_to_le64(ring_tbl_map);
 		req.ring_table_pair_index = i;
 		req.rss_ctx_idx = cpu_to_le16(vnic->fw_rss_cos_lb_ctx[i]);
-		for (j = 0; j < 64; j++) {
-			u16 ring_id;
-
-			ring_id = rxr->rx_ring_struct.fw_ring_id;
-			*ring_tbl++ = cpu_to_le16(ring_id);
-			ring_id = bnxt_cp_ring_for_rx(bp, rxr);
-			*ring_tbl++ = cpu_to_le16(ring_id);
-			rxr++;
-			k++;
-			if (k == max_rings) {
-				k = 0;
-				rxr = &bp->rx_ring[0];
-			}
-		}
 		rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 		if (rc)
 			return rc;
@@ -5139,6 +5218,14 @@ static int bnxt_hwrm_vnic_qcaps(struct bnxt *bp)
 		if (flags &
 		    VNIC_QCAPS_RESP_FLAGS_ROCE_MIRRORING_CAPABLE_VNIC_CAP)
 			bp->flags |= BNXT_FLAG_ROCE_MIRROR_CAP;
+
+		/* Older P5 fw before EXT_HW_STATS support did not set
+		 * VLAN_STRIP_CAP properly.
+		 */
+		if ((flags & VNIC_QCAPS_RESP_FLAGS_VLAN_STRIP_CAP) ||
+		    ((bp->flags & BNXT_FLAG_CHIP_P5) &&
+		     !(bp->fw_cap & BNXT_FW_CAP_EXT_HW_STATS_SUPPORTED)))
+			bp->fw_cap |= BNXT_FW_CAP_VLAN_RX_STRIP;
 		bp->max_tpa_v2 = le16_to_cpu(resp->max_aggs_supported);
 		if (bp->max_tpa_v2)
 			bp->hw_ring_stats_size =
@@ -5992,6 +6079,21 @@ static int __bnxt_reserve_rings(struct bnxt *bp)
 		rx = rx_rings << 1;
 	cp = sh ? max_t(int, tx, rx_rings) : tx + rx_rings;
 	bp->tx_nr_rings = tx;
+
+	/* If we cannot reserve all the RX rings, reset the RSS map only
+	 * if absolutely necessary
+	 */
+	if (rx_rings != bp->rx_nr_rings) {
+		netdev_warn(bp->dev, "Able to reserve only %d out of %d requested RX rings\n",
+			    rx_rings, bp->rx_nr_rings);
+		if ((bp->dev->priv_flags & IFF_RXFH_CONFIGURED) &&
+		    (bnxt_get_nr_rss_ctxs(bp, bp->rx_nr_rings) !=
+		     bnxt_get_nr_rss_ctxs(bp, rx_rings) ||
+		     bnxt_get_max_rss_ring(bp) >= rx_rings)) {
+			netdev_warn(bp->dev, "RSS table entries reverting to default\n");
+			bp->dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
+		}
+	}
 	bp->rx_nr_rings = rx_rings;
 	bp->cp_nr_rings = cp;
 
@@ -6955,7 +7057,7 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
 	struct hwrm_func_qcaps_input req = {0};
 	struct hwrm_func_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
 	struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
-	u32 flags;
+	u32 flags, flags_ext;
 
 	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCAPS, -1, -1);
 	req.fid = cpu_to_le16(0xffff);
@@ -6980,6 +7082,12 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
 		bp->fw_cap |= BNXT_FW_CAP_ERROR_RECOVERY;
 	if (flags & FUNC_QCAPS_RESP_FLAGS_ERR_RECOVER_RELOAD)
 		bp->fw_cap |= BNXT_FW_CAP_ERR_RECOVER_RELOAD;
+	if (!(flags & FUNC_QCAPS_RESP_FLAGS_VLAN_ACCELERATION_TX_DISABLED))
+		bp->fw_cap |= BNXT_FW_CAP_VLAN_TX_INSERT;
+
+	flags_ext = le32_to_cpu(resp->flags_ext);
+	if (flags_ext & FUNC_QCAPS_RESP_FLAGS_EXT_EXT_HW_STATS_SUPPORTED)
+		bp->fw_cap |= BNXT_FW_CAP_EXT_HW_STATS_SUPPORTED;
 
 	bp->tx_push_thresh = 0;
 	if ((flags & FUNC_QCAPS_RESP_FLAGS_PUSH_MODE_SUPPORTED) &&
@@ -7634,7 +7742,7 @@ static int __bnxt_setup_vnic_p5(struct bnxt *bp, u16 vnic_id)
 {
 	int rc, i, nr_ctxs;
 
-	nr_ctxs = DIV_ROUND_UP(bp->rx_nr_rings, 64);
+	nr_ctxs = bnxt_get_nr_rss_ctxs(bp, bp->rx_nr_rings);
 	for (i = 0; i < nr_ctxs; i++) {
 		rc = bnxt_hwrm_vnic_ctx_alloc(bp, vnic_id, i);
 		if (rc) {
@@ -8196,6 +8304,9 @@ int bnxt_reserve_rings(struct bnxt *bp, bool irq_re_init)
 			rc = bnxt_init_int_mode(bp);
 		bnxt_ulp_irq_restart(bp, rc);
 	}
+	if (!netif_is_rxfh_configured(bp->dev))
+		bnxt_set_dflt_rss_indir_tbl(bp);
+
 	if (rc) {
 		netdev_err(bp->dev, "ring reservation/IRQ init failure rc: %d\n", rc);
 		return rc;
@@ -9835,24 +9946,16 @@ static netdev_features_t bnxt_fix_features(struct net_device *dev,
 	/* Both CTAG and STAG VLAN accelaration on the RX side have to be
 	 * turned on or off together.
 	 */
-	vlan_features = features & (NETIF_F_HW_VLAN_CTAG_RX |
-				    NETIF_F_HW_VLAN_STAG_RX);
-	if (vlan_features != (NETIF_F_HW_VLAN_CTAG_RX |
-			      NETIF_F_HW_VLAN_STAG_RX)) {
-		if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
-			features &= ~(NETIF_F_HW_VLAN_CTAG_RX |
-				      NETIF_F_HW_VLAN_STAG_RX);
+	vlan_features = features & BNXT_HW_FEATURE_VLAN_ALL_RX;
+	if (vlan_features != BNXT_HW_FEATURE_VLAN_ALL_RX) {
+		if (dev->features & BNXT_HW_FEATURE_VLAN_ALL_RX)
+			features &= ~BNXT_HW_FEATURE_VLAN_ALL_RX;
 		else if (vlan_features)
-			features |= NETIF_F_HW_VLAN_CTAG_RX |
-				    NETIF_F_HW_VLAN_STAG_RX;
+			features |= BNXT_HW_FEATURE_VLAN_ALL_RX;
 	}
 #ifdef CONFIG_BNXT_SRIOV
-	if (BNXT_VF(bp)) {
-		if (bp->vf.vlan) {
-			features &= ~(NETIF_F_HW_VLAN_CTAG_RX |
-				      NETIF_F_HW_VLAN_STAG_RX);
-		}
-	}
+	if (BNXT_VF(bp) && bp->vf.vlan)
+		features &= ~BNXT_HW_FEATURE_VLAN_ALL_RX;
 #endif
 	return features;
 }
@@ -9875,7 +9978,7 @@ static int bnxt_set_features(struct net_device *dev, netdev_features_t features)
 	if (bp->flags & BNXT_FLAG_NO_AGG_RINGS)
 		flags &= ~BNXT_FLAG_TPA;
 
-	if (features & NETIF_F_HW_VLAN_CTAG_RX)
+	if (features & BNXT_HW_FEATURE_VLAN_ALL_RX)
 		flags |= BNXT_FLAG_STRIP_VLAN;
 
 	if (features & NETIF_F_NTUPLE)
@@ -11510,6 +11613,8 @@ static void bnxt_remove_one(struct pci_dev *pdev)
 	bnxt_free_ctx_mem(bp);
 	kfree(bp->ctx);
 	bp->ctx = NULL;
+	kfree(bp->rss_indir_tbl);
+	bp->rss_indir_tbl = NULL;
 	bnxt_free_port_stats(bp);
 	free_netdev(dev);
 }
@@ -11961,8 +12066,10 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM |
 				    NETIF_F_GSO_GRE_CSUM;
 	dev->vlan_features = dev->hw_features | NETIF_F_HIGHDMA;
-	dev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX |
-			    NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX;
+	if (bp->fw_cap & BNXT_FW_CAP_VLAN_RX_STRIP)
+		dev->hw_features |= BNXT_HW_FEATURE_VLAN_ALL_RX;
+	if (bp->fw_cap & BNXT_FW_CAP_VLAN_TX_INSERT)
+		dev->hw_features |= BNXT_HW_FEATURE_VLAN_ALL_TX;
 	if (BNXT_SUPPORTS_TPA(bp))
 		dev->hw_features |= NETIF_F_GRO_HW;
 	dev->features |= dev->hw_features | NETIF_F_HIGHDMA;
@@ -12018,7 +12125,7 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	bnxt_fw_init_one_p3(bp);
 
-	if (dev->hw_features & NETIF_F_HW_VLAN_CTAG_RX)
+	if (dev->hw_features & BNXT_HW_FEATURE_VLAN_ALL_RX)
 		bp->flags |= BNXT_FLAG_STRIP_VLAN;
 
 	rc = bnxt_init_int_mode(bp);
@@ -12030,6 +12137,11 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	 */
 	bp->tx_nr_rings_per_tc = bp->tx_nr_rings;
 
+	rc = bnxt_alloc_rss_indir_tbl(bp);
+	if (rc)
+		goto init_err_pci_clean;
+	bnxt_set_dflt_rss_indir_tbl(bp);
+
 	if (BNXT_PF(bp)) {
 		if (!bnxt_pf_wq) {
 			bnxt_pf_wq =
@@ -12074,6 +12186,8 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	bnxt_free_ctx_mem(bp);
 	kfree(bp->ctx);
 	bp->ctx = NULL;
+	kfree(bp->rss_indir_tbl);
+	bp->rss_indir_tbl = NULL;
 
 init_err_free:
 	free_netdev(dev);

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

@@ -1017,6 +1017,15 @@ struct bnxt_vnic_info {
 	__le16		*rss_table;
 	dma_addr_t	rss_hash_key_dma_addr;
 	u64		*rss_hash_key;
+	int		rss_table_size;
+#define BNXT_RSS_TABLE_ENTRIES_P5	64
+#define BNXT_RSS_TABLE_SIZE_P5		(BNXT_RSS_TABLE_ENTRIES_P5 * 4)
+#define BNXT_RSS_TABLE_MAX_TBL_P5	8
+#define BNXT_MAX_RSS_TABLE_SIZE_P5				\
+	(BNXT_RSS_TABLE_SIZE_P5 * BNXT_RSS_TABLE_MAX_TBL_P5)
+#define BNXT_MAX_RSS_TABLE_ENTRIES_P5				\
+	(BNXT_RSS_TABLE_ENTRIES_P5 * BNXT_RSS_TABLE_MAX_TBL_P5)
+
 	u32		rx_mask;
 
 	u8		*mc_list;
@@ -1648,6 +1657,8 @@ struct bnxt {
 	struct bnxt_ring_grp_info	*grp_info;
 	struct bnxt_vnic_info	*vnic_info;
 	int			nr_vnics;
+	u16			*rss_indir_tbl;
+	u16			rss_indir_tbl_entries;
 	u32			rss_hash_cfg;
 
 	u16			max_mtu;
@@ -1705,6 +1716,9 @@ struct bnxt {
 	#define BNXT_FW_CAP_ERR_RECOVER_RELOAD		0x00100000
 	#define BNXT_FW_CAP_HOT_RESET			0x00200000
 	#define BNXT_FW_CAP_SHARED_PORT_CFG		0x00400000
+	#define BNXT_FW_CAP_VLAN_RX_STRIP		0x01000000
+	#define BNXT_FW_CAP_VLAN_TX_INSERT		0x02000000
+	#define BNXT_FW_CAP_EXT_HW_STATS_SUPPORTED	0x04000000
 
 #define BNXT_NEW_RM(bp)		((bp)->fw_cap & BNXT_FW_CAP_NEW_RM)
 	u32			hwrm_spec_code;
@@ -1895,6 +1909,11 @@ struct bnxt {
 #define BNXT_PCIE_STATS_OFFSET(counter)			\
 	(offsetof(struct pcie_ctx_hw_stats, counter) / 8)
 
+#define BNXT_HW_FEATURE_VLAN_ALL_RX				\
+	(NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_STAG_RX)
+#define BNXT_HW_FEATURE_VLAN_ALL_TX				\
+	(NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX)
+
 #define I2C_DEV_ADDR_A0				0xa0
 #define I2C_DEV_ADDR_A2				0xa2
 #define SFF_DIAG_SUPPORT_OFFSET			0x5c
@@ -2028,6 +2047,7 @@ int hwrm_send_message(struct bnxt *, void *, u32, int);
 int hwrm_send_message_silent(struct bnxt *, void *, u32, int);
 int bnxt_hwrm_func_drv_rgtr(struct bnxt *bp, unsigned long *bmap,
 			    int bmap_size, bool async_only);
+int bnxt_get_nr_rss_ctxs(struct bnxt *bp, int rx_rings);
 int bnxt_hwrm_vnic_cfg(struct bnxt *bp, u16 vnic_id);
 int __bnxt_hwrm_get_tx_rings(struct bnxt *bp, u16 fid, int *tx_rings);
 int bnxt_nq_rings_in_use(struct bnxt *bp);

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

@@ -926,6 +926,13 @@ static int bnxt_set_channels(struct net_device *dev,
 		return rc;
 	}
 
+	if (bnxt_get_nr_rss_ctxs(bp, req_rx_rings) !=
+	    bnxt_get_nr_rss_ctxs(bp, bp->rx_nr_rings) &&
+	    (dev->priv_flags & IFF_RXFH_CONFIGURED)) {
+		netdev_warn(dev, "RSS table size change required, RSS table entries must be default to proceed\n");
+		return -EINVAL;
+	}
+
 	if (netif_running(dev)) {
 		if (BNXT_PF(bp)) {
 			/* TODO CHIMP_FW: Send message to all VF's
@@ -1273,8 +1280,12 @@ static int bnxt_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
 	return rc;
 }
 
-static u32 bnxt_get_rxfh_indir_size(struct net_device *dev)
+u32 bnxt_get_rxfh_indir_size(struct net_device *dev)
 {
+	struct bnxt *bp = netdev_priv(dev);
+
+	if (bp->flags & BNXT_FLAG_CHIP_P5)
+		return ALIGN(bp->rx_nr_rings, BNXT_RSS_TABLE_ENTRIES_P5);
 	return HW_HASH_INDEX_SIZE;
 }
 
@@ -1288,7 +1299,7 @@ static int bnxt_get_rxfh(struct net_device *dev, u32 *indir, u8 *key,
 {
 	struct bnxt *bp = netdev_priv(dev);
 	struct bnxt_vnic_info *vnic;
-	int i = 0;
+	u32 i, tbl_size;
 
 	if (hfunc)
 		*hfunc = ETH_RSS_HASH_TOP;
@@ -1297,9 +1308,10 @@ static int bnxt_get_rxfh(struct net_device *dev, u32 *indir, u8 *key,
 		return 0;
 
 	vnic = &bp->vnic_info[0];
-	if (indir && vnic->rss_table) {
-		for (i = 0; i < HW_HASH_INDEX_SIZE; i++)
-			indir[i] = le16_to_cpu(vnic->rss_table[i]);
+	if (indir && bp->rss_indir_tbl) {
+		tbl_size = bnxt_get_rxfh_indir_size(dev);
+		for (i = 0; i < tbl_size; i++)
+			indir[i] = bp->rss_indir_tbl[i];
 	}
 
 	if (key && vnic->rss_hash_key)
@@ -1308,6 +1320,35 @@ static int bnxt_get_rxfh(struct net_device *dev, u32 *indir, u8 *key,
 	return 0;
 }
 
+static int bnxt_set_rxfh(struct net_device *dev, const u32 *indir,
+			 const u8 *key, const u8 hfunc)
+{
+	struct bnxt *bp = netdev_priv(dev);
+	int rc = 0;
+
+	if (hfunc && hfunc != ETH_RSS_HASH_TOP)
+		return -EOPNOTSUPP;
+
+	if (key)
+		return -EOPNOTSUPP;
+
+	if (indir) {
+		u32 i, pad, tbl_size = bnxt_get_rxfh_indir_size(dev);
+
+		for (i = 0; i < tbl_size; i++)
+			bp->rss_indir_tbl[i] = indir[i];
+		pad = bp->rss_indir_tbl_entries - tbl_size;
+		if (pad)
+			memset(&bp->rss_indir_tbl[i], 0, pad * sizeof(u16));
+	}
+
+	if (netif_running(bp->dev)) {
+		bnxt_close_nic(bp, false, false);
+		rc = bnxt_open_nic(bp, false, false);
+	}
+	return rc;
+}
+
 static void bnxt_get_drvinfo(struct net_device *dev,
 			     struct ethtool_drvinfo *info)
 {
@@ -3614,6 +3655,7 @@ const struct ethtool_ops bnxt_ethtool_ops = {
 	.get_rxfh_indir_size    = bnxt_get_rxfh_indir_size,
 	.get_rxfh_key_size      = bnxt_get_rxfh_key_size,
 	.get_rxfh               = bnxt_get_rxfh,
+	.set_rxfh		= bnxt_set_rxfh,
 	.flash_device		= bnxt_flash_device,
 	.get_eeprom_len         = bnxt_get_eeprom_len,
 	.get_eeprom             = bnxt_get_eeprom,

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

@@ -86,6 +86,7 @@ struct hwrm_dbg_cmn_output {
 
 extern const struct ethtool_ops bnxt_ethtool_ops;
 
+u32 bnxt_get_rxfh_indir_size(struct net_device *dev);
 u32 _bnxt_fw_to_ethtool_adv_spds(u16, u8);
 u32 bnxt_fw_to_ethtool_speed(u16);
 u16 bnxt_get_fw_auto_link_speeds(u32);