1 files changed, 61 insertions, 44 deletions

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 9f1d5de7bf16..b5dcd15ced36 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -66,6 +66,7 @@ static const struct pci_device_id i40e_pci_tbl[] = {
 	{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
 	{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
 	{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
+	{PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_BC), 0},
 	{PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
 	{PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
 	{PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_BC), 0},
@@ -3565,12 +3566,8 @@ static int i40e_configure_rx_ring(struct i40e_ring *ring)
 	if (ring->vsi->type == I40E_VSI_MAIN)
 		xdp_rxq_info_unreg_mem_model(&ring->xdp_rxq);
 
-	kfree(ring->rx_bi);
 	ring->xsk_pool = i40e_xsk_pool(ring);
 	if (ring->xsk_pool) {
-		ret = i40e_alloc_rx_bi_zc(ring);
-		if (ret)
-			return ret;
 		ring->rx_buf_len =
 		  xsk_pool_get_rx_frame_size(ring->xsk_pool);
 		/* For AF_XDP ZC, we disallow packets to span on
@@ -3588,9 +3585,6 @@ static int i40e_configure_rx_ring(struct i40e_ring *ring)
 			 ring->queue_index);
 
 	} else {
-		ret = i40e_alloc_rx_bi(ring);
-		if (ret)
-			return ret;
 		ring->rx_buf_len = vsi->rx_buf_len;
 		if (ring->vsi->type == I40E_VSI_MAIN) {
 			ret = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
@@ -3878,7 +3872,7 @@ static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
 		wr32(hw, I40E_PFINT_RATEN(vector - 1),
 		     i40e_intrl_usec_to_reg(vsi->int_rate_limit));
 
-		/* Linked list for the queuepairs assigned to this vector */
+		/* begin of linked list for RX queue assigned to this vector */
 		wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
 		for (q = 0; q < q_vector->num_ringpairs; q++) {
 			u32 nextqp = has_xdp ? qp + vsi->alloc_queue_pairs : qp;
@@ -3894,6 +3888,7 @@ static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
 			wr32(hw, I40E_QINT_RQCTL(qp), val);
 
 			if (has_xdp) {
+				/* TX queue with next queue set to TX */
 				val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
 				      (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
 				      (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
@@ -3903,7 +3898,7 @@ static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
 
 				wr32(hw, I40E_QINT_TQCTL(nextqp), val);
 			}
-
+			/* TX queue with next RX or end of linked list */
 			val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
 			      (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
 			      (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
@@ -3972,7 +3967,6 @@ static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
 	struct i40e_q_vector *q_vector = vsi->q_vectors[0];
 	struct i40e_pf *pf = vsi->back;
 	struct i40e_hw *hw = &pf->hw;
-	u32 val;
 
 	/* set the ITR configuration */
 	q_vector->rx.next_update = jiffies + 1;
@@ -3989,28 +3983,20 @@ static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
 	/* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
 	wr32(hw, I40E_PFINT_LNKLST0, 0);
 
-	/* Associate the queue pair to the vector and enable the queue int */
-	val = I40E_QINT_RQCTL_CAUSE_ENA_MASK		       |
-	      (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
-	      (nextqp	   << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
-	      (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
-
-	wr32(hw, I40E_QINT_RQCTL(0), val);
+	/* Associate the queue pair to the vector and enable the queue
+	 * interrupt RX queue in linked list with next queue set to TX
+	 */
+	wr32(hw, I40E_QINT_RQCTL(0), I40E_QINT_RQCTL_VAL(nextqp, 0, TX));
 
 	if (i40e_enabled_xdp_vsi(vsi)) {
-		val = I40E_QINT_TQCTL_CAUSE_ENA_MASK		     |
-		      (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)|
-		      (I40E_QUEUE_TYPE_TX
-		       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
-
-		wr32(hw, I40E_QINT_TQCTL(nextqp), val);
+		/* TX queue in linked list with next queue set to TX */
+		wr32(hw, I40E_QINT_TQCTL(nextqp),
+		     I40E_QINT_TQCTL_VAL(nextqp, 0, TX));
 	}
 
-	val = I40E_QINT_TQCTL_CAUSE_ENA_MASK		      |
-	      (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
-	      (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
-
-	wr32(hw, I40E_QINT_TQCTL(0), val);
+	/* last TX queue so the next RX queue doesn't matter */
+	wr32(hw, I40E_QINT_TQCTL(0),
+	     I40E_QINT_TQCTL_VAL(I40E_QUEUE_END_OF_LIST, 0, RX));
 	i40e_flush(hw);
 }
 
@@ -5909,6 +5895,26 @@ static int i40e_get_link_speed(struct i40e_vsi *vsi)
 }
 
 /**
+ * i40e_bw_bytes_to_mbits - Convert max_tx_rate from bytes to mbits
+ * @vsi: Pointer to vsi structure
+ * @max_tx_rate: max TX rate in bytes to be converted into Mbits
+ *
+ * Helper function to convert units before send to set BW limit
+ **/
+static u64 i40e_bw_bytes_to_mbits(struct i40e_vsi *vsi, u64 max_tx_rate)
+{
+	if (max_tx_rate < I40E_BW_MBPS_DIVISOR) {
+		dev_warn(&vsi->back->pdev->dev,
+			 "Setting max tx rate to minimum usable value of 50Mbps.\n");
+		max_tx_rate = I40E_BW_CREDIT_DIVISOR;
+	} else {
+		do_div(max_tx_rate, I40E_BW_MBPS_DIVISOR);
+	}
+
+	return max_tx_rate;
+}
+
+/**
  * i40e_set_bw_limit - setup BW limit for Tx traffic based on max_tx_rate
  * @vsi: VSI to be configured
  * @seid: seid of the channel/VSI
@@ -5930,10 +5936,10 @@ int i40e_set_bw_limit(struct i40e_vsi *vsi, u16 seid, u64 max_tx_rate)
 			max_tx_rate, seid);
 		return -EINVAL;
 	}
-	if (max_tx_rate && max_tx_rate < 50) {
+	if (max_tx_rate && max_tx_rate < I40E_BW_CREDIT_DIVISOR) {
 		dev_warn(&pf->pdev->dev,
 			 "Setting max tx rate to minimum usable value of 50Mbps.\n");
-		max_tx_rate = 50;
+		max_tx_rate = I40E_BW_CREDIT_DIVISOR;
 	}
 
 	/* Tx rate credits are in values of 50Mbps, 0 is disabled */
@@ -6659,6 +6665,9 @@ static int i40e_configure_queue_channels(struct i40e_vsi *vsi)
 			vsi->tc_seid_map[i] = ch->seid;
 		}
 	}
+
+	/* reset to reconfigure TX queue contexts */
+	i40e_do_reset(vsi->back, I40E_PF_RESET_FLAG, true);
 	return ret;
 
 err_free:
@@ -8221,9 +8230,9 @@ config_tc:
 
 	if (i40e_is_tc_mqprio_enabled(pf)) {
 		if (vsi->mqprio_qopt.max_rate[0]) {
-			u64 max_tx_rate = vsi->mqprio_qopt.max_rate[0];
+			u64 max_tx_rate = i40e_bw_bytes_to_mbits(vsi,
+						  vsi->mqprio_qopt.max_rate[0]);
 
-			do_div(max_tx_rate, I40E_BW_MBPS_DIVISOR);
 			ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
 			if (!ret) {
 				u64 credits = max_tx_rate;
@@ -10701,7 +10710,7 @@ static void i40e_send_version(struct i40e_pf *pf)
 	dv.minor_version = 0xff;
 	dv.build_version = 0xff;
 	dv.subbuild_version = 0;
-	strlcpy(dv.driver_string, UTS_RELEASE, sizeof(dv.driver_string));
+	strscpy(dv.driver_string, UTS_RELEASE, sizeof(dv.driver_string));
 	i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
 }
 
@@ -10968,10 +10977,10 @@ static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired)
 	}
 
 	if (vsi->mqprio_qopt.max_rate[0]) {
-		u64 max_tx_rate = vsi->mqprio_qopt.max_rate[0];
+		u64 max_tx_rate = i40e_bw_bytes_to_mbits(vsi,
+						  vsi->mqprio_qopt.max_rate[0]);
 		u64 credits = 0;
 
-		do_div(max_tx_rate, I40E_BW_MBPS_DIVISOR);
 		ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
 		if (ret)
 			goto end_unlock;
@@ -11925,8 +11934,7 @@ static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
 	cpumask_copy(&q_vector->affinity_mask, cpu_possible_mask);
 
 	if (vsi->netdev)
-		netif_napi_add(vsi->netdev, &q_vector->napi,
-			       i40e_napi_poll, NAPI_POLL_WEIGHT);
+		netif_napi_add(vsi->netdev, &q_vector->napi, i40e_napi_poll);
 
 	/* tie q_vector and vsi together */
 	vsi->q_vectors[v_idx] = q_vector;
@@ -13281,6 +13289,14 @@ static int i40e_xdp_setup(struct i40e_vsi *vsi, struct bpf_prog *prog,
 		i40e_reset_and_rebuild(pf, true, true);
 	}
 
+	if (!i40e_enabled_xdp_vsi(vsi) && prog) {
+		if (i40e_realloc_rx_bi_zc(vsi, true))
+			return -ENOMEM;
+	} else if (i40e_enabled_xdp_vsi(vsi) && !prog) {
+		if (i40e_realloc_rx_bi_zc(vsi, false))
+			return -ENOMEM;
+	}
+
 	for (i = 0; i < vsi->num_queue_pairs; i++)
 		WRITE_ONCE(vsi->rx_rings[i]->xdp_prog, vsi->xdp_prog);
 
@@ -13513,6 +13529,7 @@ int i40e_queue_pair_disable(struct i40e_vsi *vsi, int queue_pair)
 
 	i40e_queue_pair_disable_irq(vsi, queue_pair);
 	err = i40e_queue_pair_toggle_rings(vsi, queue_pair, false /* off */);
+	i40e_clean_rx_ring(vsi->rx_rings[queue_pair]);
 	i40e_queue_pair_toggle_napi(vsi, queue_pair, false /* off */);
 	i40e_queue_pair_clean_rings(vsi, queue_pair);
 	i40e_queue_pair_reset_stats(vsi, queue_pair);
@@ -16049,23 +16066,23 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 		switch (hw->bus.speed) {
 		case i40e_bus_speed_8000:
-			strlcpy(speed, "8.0", PCI_SPEED_SIZE); break;
+			strscpy(speed, "8.0", PCI_SPEED_SIZE); break;
 		case i40e_bus_speed_5000:
-			strlcpy(speed, "5.0", PCI_SPEED_SIZE); break;
+			strscpy(speed, "5.0", PCI_SPEED_SIZE); break;
 		case i40e_bus_speed_2500:
-			strlcpy(speed, "2.5", PCI_SPEED_SIZE); break;
+			strscpy(speed, "2.5", PCI_SPEED_SIZE); break;
 		default:
 			break;
 		}
 		switch (hw->bus.width) {
 		case i40e_bus_width_pcie_x8:
-			strlcpy(width, "8", PCI_WIDTH_SIZE); break;
+			strscpy(width, "8", PCI_WIDTH_SIZE); break;
 		case i40e_bus_width_pcie_x4:
-			strlcpy(width, "4", PCI_WIDTH_SIZE); break;
+			strscpy(width, "4", PCI_WIDTH_SIZE); break;
 		case i40e_bus_width_pcie_x2:
-			strlcpy(width, "2", PCI_WIDTH_SIZE); break;
+			strscpy(width, "2", PCI_WIDTH_SIZE); break;
 		case i40e_bus_width_pcie_x1:
-			strlcpy(width, "1", PCI_WIDTH_SIZE); break;
+			strscpy(width, "1", PCI_WIDTH_SIZE); break;
 		default:
 			break;
 		}