Merge branch 'hns3-next'

Huazhong Tan says:

====================
code optimizations & bugfixes for HNS3 driver

This patchset includes bugfixes and code optimizations for the HNS3
ethernet controller driver
====================

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

7 files changed, 138 insertions, 69 deletions

diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
index dc3db45361d3..585800e634e6 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
@@ -477,7 +477,6 @@ struct hnae3_dcb_ops {
 	u8   (*getdcbx)(struct hnae3_handle *);
 	u8   (*setdcbx)(struct hnae3_handle *, u8);
 
-	int (*map_update)(struct hnae3_handle *);
 	int (*setup_tc)(struct hnae3_handle *, u8, u8 *);
 };
 
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 327dde2765ab..4b38c37eef8f 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -348,6 +348,8 @@ static int hns3_nic_net_up(struct net_device *netdev)
 		return ret;
 	}
 
+	clear_bit(HNS3_NIC_STATE_DOWN, &priv->state);
+
 	/* enable the vectors */
 	for (i = 0; i < priv->vector_num; i++)
 		hns3_vector_enable(&priv->tqp_vector[i]);
@@ -361,11 +363,10 @@ static int hns3_nic_net_up(struct net_device *netdev)
 	if (ret)
 		goto out_start_err;
 
-	clear_bit(HNS3_NIC_STATE_DOWN, &priv->state);
-
 	return 0;
 
 out_start_err:
+	set_bit(HNS3_NIC_STATE_DOWN, &priv->state);
 	while (j--)
 		hns3_tqp_disable(h->kinfo.tqp[j]);
 
@@ -506,7 +507,7 @@ static u8 hns3_get_netdev_flags(struct net_device *netdev)
 	u8 flags = 0;
 
 	if (netdev->flags & IFF_PROMISC) {
-		flags = HNAE3_USER_UPE | HNAE3_USER_MPE;
+		flags = HNAE3_USER_UPE | HNAE3_USER_MPE | HNAE3_BPE;
 	} else {
 		flags |= HNAE3_VLAN_FLTR;
 		if (netdev->flags & IFF_ALLMULTI)
@@ -541,13 +542,13 @@ static void hns3_nic_set_rx_mode(struct net_device *netdev)
 		}
 	}
 
-	hns3_update_promisc_mode(netdev, new_flags);
 	/* User mode Promisc mode enable and vlan filtering is disabled to
 	 * let all packets in. MAC-VLAN Table overflow Promisc enabled and
 	 * vlan fitering is enabled
 	 */
 	hns3_enable_vlan_filter(netdev, new_flags & HNAE3_VLAN_FLTR);
 	h->netdev_flags = new_flags;
+	hns3_update_promisc_mode(netdev, new_flags);
 }
 
 int hns3_update_promisc_mode(struct net_device *netdev, u8 promisc_flags)
@@ -1133,6 +1134,7 @@ static int hns3_nic_maybe_stop_tso(struct sk_buff **out_skb, int *bnum,
 				   struct hns3_enet_ring *ring)
 {
 	struct sk_buff *skb = *out_skb;
+	struct sk_buff *new_skb = NULL;
 	struct skb_frag_struct *frag;
 	int bdnum_for_frag;
 	int frag_num;
@@ -1155,7 +1157,19 @@ static int hns3_nic_maybe_stop_tso(struct sk_buff **out_skb, int *bnum,
 		buf_num += bdnum_for_frag;
 	}
 
-	if (buf_num > ring_space(ring))
+	if (unlikely(buf_num > HNS3_MAX_BD_PER_FRAG)) {
+		buf_num = (skb->len + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE;
+		if (ring_space(ring) < buf_num)
+			return -EBUSY;
+		/* manual split the send packet */
+		new_skb = skb_copy(skb, GFP_ATOMIC);
+		if (!new_skb)
+			return -ENOMEM;
+		dev_kfree_skb_any(skb);
+		*out_skb = new_skb;
+	}
+
+	if (unlikely(ring_space(ring) < buf_num))
 		return -EBUSY;
 
 	*bnum = buf_num;
@@ -1166,11 +1180,24 @@ static int hns3_nic_maybe_stop_tx(struct sk_buff **out_skb, int *bnum,
 				  struct hns3_enet_ring *ring)
 {
 	struct sk_buff *skb = *out_skb;
+	struct sk_buff *new_skb = NULL;
 	int buf_num;
 
 	/* No. of segments (plus a header) */
 	buf_num = skb_shinfo(skb)->nr_frags + 1;
 
+	if (unlikely(buf_num > HNS3_MAX_BD_PER_FRAG)) {
+		buf_num = (skb->len + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE;
+		if (ring_space(ring) < buf_num)
+			return -EBUSY;
+		/* manual split the send packet */
+		new_skb = skb_copy(skb, GFP_ATOMIC);
+		if (!new_skb)
+			return -ENOMEM;
+		dev_kfree_skb_any(skb);
+		*out_skb = new_skb;
+	}
+
 	if (unlikely(ring_space(ring) < buf_num))
 		return -EBUSY;
 
@@ -1425,9 +1452,7 @@ static void hns3_nic_get_stats64(struct net_device *netdev,
 			start = u64_stats_fetch_begin_irq(&ring->syncp);
 			tx_bytes += ring->stats.tx_bytes;
 			tx_pkts += ring->stats.tx_pkts;
-			tx_drop += ring->stats.tx_busy;
 			tx_drop += ring->stats.sw_err_cnt;
-			tx_errors += ring->stats.tx_busy;
 			tx_errors += ring->stats.sw_err_cnt;
 		} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
 
@@ -1438,7 +1463,6 @@ static void hns3_nic_get_stats64(struct net_device *netdev,
 			rx_bytes += ring->stats.rx_bytes;
 			rx_pkts += ring->stats.rx_pkts;
 			rx_drop += ring->stats.non_vld_descs;
-			rx_drop += ring->stats.err_pkt_len;
 			rx_drop += ring->stats.l2_err;
 			rx_errors += ring->stats.non_vld_descs;
 			rx_errors += ring->stats.l2_err;
@@ -1485,8 +1509,6 @@ static int hns3_setup_tc(struct net_device *netdev, void *type_data)
 	u8 tc = mqprio_qopt->qopt.num_tc;
 	u16 mode = mqprio_qopt->mode;
 	u8 hw = mqprio_qopt->qopt.hw;
-	bool if_running;
-	int ret;
 
 	if (!((hw == TC_MQPRIO_HW_OFFLOAD_TCS &&
 	       mode == TC_MQPRIO_MODE_CHANNEL) || (!hw && tc == 0)))
@@ -1498,24 +1520,8 @@ static int hns3_setup_tc(struct net_device *netdev, void *type_data)
 	if (!netdev)
 		return -EINVAL;
 
-	if_running = netif_running(netdev);
-	if (if_running) {
-		hns3_nic_net_stop(netdev);
-		msleep(100);
-	}
-
-	ret = (kinfo->dcb_ops && kinfo->dcb_ops->setup_tc) ?
+	return (kinfo->dcb_ops && kinfo->dcb_ops->setup_tc) ?
 		kinfo->dcb_ops->setup_tc(h, tc, prio_tc) : -EOPNOTSUPP;
-	if (ret)
-		goto out;
-
-	ret = hns3_nic_set_real_num_queue(netdev);
-
-out:
-	if (if_running)
-		hns3_nic_net_open(netdev);
-
-	return ret;
 }
 
 static int hns3_nic_setup_tc(struct net_device *dev, enum tc_setup_type type,
@@ -1784,6 +1790,7 @@ static void hns3_remove(struct pci_dev *pdev)
 		hns3_disable_sriov(pdev);
 
 	hnae3_unregister_ae_dev(ae_dev);
+	pci_set_drvdata(pdev, NULL);
 }
 
 /**
@@ -3608,6 +3615,7 @@ static int hns3_client_init(struct hnae3_handle *handle)
 	priv->netdev = netdev;
 	priv->ae_handle = handle;
 	priv->tx_timeout_count = 0;
+	set_bit(HNS3_NIC_STATE_DOWN, &priv->state);
 
 	handle->kinfo.netdev = netdev;
 	handle->priv = (void *)priv;
@@ -3752,7 +3760,6 @@ static int hns3_client_setup_tc(struct hnae3_handle *handle, u8 tc)
 {
 	struct hnae3_knic_private_info *kinfo = &handle->kinfo;
 	struct net_device *ndev = kinfo->netdev;
-	int ret;
 
 	if (tc > HNAE3_MAX_TC)
 		return -EINVAL;
@@ -3760,14 +3767,7 @@ static int hns3_client_setup_tc(struct hnae3_handle *handle, u8 tc)
 	if (!ndev)
 		return -ENODEV;
 
-	ret = (kinfo->dcb_ops && kinfo->dcb_ops->map_update) ?
-		kinfo->dcb_ops->map_update(handle) : -EOPNOTSUPP;
-	if (ret)
-		return ret;
-
-	ret = hns3_nic_set_real_num_queue(ndev);
-
-	return ret;
+	return hns3_nic_set_real_num_queue(ndev);
 }
 
 static int hns3_recover_hw_addr(struct net_device *ndev)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
index abb78696d7ce..ed73f7fc9171 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
@@ -117,7 +117,7 @@ static int hns3_lp_up(struct net_device *ndev, enum hnae3_loop loop_mode)
 	ret = hns3_lp_setup(ndev, loop_mode, true);
 	usleep_range(10000, 20000);
 
-	return 0;
+	return ret;
 }
 
 static int hns3_lp_down(struct net_device *ndev, enum hnae3_loop loop_mode)
@@ -334,10 +334,10 @@ static void hns3_self_test(struct net_device *ndev,
 			continue;
 
 		data[test_index] = hns3_lp_up(ndev, loop_type);
-		if (!data[test_index]) {
+		if (!data[test_index])
 			data[test_index] = hns3_lp_run_test(ndev, loop_type);
-			hns3_lp_down(ndev, loop_type);
-		}
+
+		hns3_lp_down(ndev, loop_type);
 
 		if (data[test_index])
 			eth_test->flags |= ETH_TEST_FL_FAILED;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
index 3a4a54ee5204..961aedb0e20f 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
@@ -156,10 +156,8 @@ static int hclge_ets_validate(struct hclge_dev *hdev, struct ieee_ets *ets,
 	return 0;
 }
 
-static int hclge_map_update(struct hnae3_handle *h)
+static int hclge_map_update(struct hclge_dev *hdev)
 {
-	struct hclge_vport *vport = hclge_get_vport(h);
-	struct hclge_dev *hdev = vport->back;
 	int ret;
 
 	ret = hclge_tm_schd_setup_hw(hdev);
@@ -232,12 +230,17 @@ static int hclge_ieee_setets(struct hnae3_handle *h, struct ieee_ets *ets)
 
 	ret = hclge_ieee_ets_to_tm_info(hdev, ets);
 	if (ret)
-		return ret;
+		goto err_out;
 
 	if (map_changed) {
+		ret = hclge_map_update(hdev);
+		if (ret)
+			goto err_out;
+
 		ret = hclge_client_setup_tc(hdev);
 		if (ret)
-			return ret;
+			goto err_out;
+
 		ret = hclge_notify_client(hdev, HNAE3_INIT_CLIENT);
 		if (ret)
 			return ret;
@@ -248,6 +251,16 @@ static int hclge_ieee_setets(struct hnae3_handle *h, struct ieee_ets *ets)
 	}
 
 	return hclge_tm_dwrr_cfg(hdev);
+
+err_out:
+	if (!map_changed)
+		return ret;
+
+	if (hclge_notify_client(hdev, HNAE3_INIT_CLIENT))
+		return ret;
+
+	hclge_notify_client(hdev, HNAE3_UP_CLIENT);
+	return ret;
 }
 
 static int hclge_ieee_getpfc(struct hnae3_handle *h, struct ieee_pfc *pfc)
@@ -359,12 +372,24 @@ static int hclge_setup_tc(struct hnae3_handle *h, u8 tc, u8 *prio_tc)
 	if (ret)
 		return -EINVAL;
 
+	ret = hclge_notify_client(hdev, HNAE3_DOWN_CLIENT);
+	if (ret)
+		return ret;
+
+	ret = hclge_notify_client(hdev, HNAE3_UNINIT_CLIENT);
+	if (ret)
+		return ret;
+
 	hclge_tm_schd_info_update(hdev, tc);
 	hclge_tm_prio_tc_info_update(hdev, prio_tc);
 
 	ret = hclge_tm_init_hw(hdev, false);
 	if (ret)
-		return ret;
+		goto err_out;
+
+	ret = hclge_client_setup_tc(hdev);
+	if (ret)
+		goto err_out;
 
 	hdev->flag &= ~HCLGE_FLAG_DCB_ENABLE;
 
@@ -373,7 +398,18 @@ static int hclge_setup_tc(struct hnae3_handle *h, u8 tc, u8 *prio_tc)
 	else
 		hdev->flag &= ~HCLGE_FLAG_MQPRIO_ENABLE;
 
-	return 0;
+	ret = hclge_notify_client(hdev, HNAE3_INIT_CLIENT);
+	if (ret)
+		return ret;
+
+	return hclge_notify_client(hdev, HNAE3_UP_CLIENT);
+
+err_out:
+	if (hclge_notify_client(hdev, HNAE3_INIT_CLIENT))
+		return ret;
+
+	hclge_notify_client(hdev, HNAE3_UP_CLIENT);
+	return ret;
 }
 
 static const struct hnae3_dcb_ops hns3_dcb_ops = {
@@ -383,7 +419,6 @@ static const struct hnae3_dcb_ops hns3_dcb_ops = {
 	.ieee_setpfc	= hclge_ieee_setpfc,
 	.getdcbx	= hclge_getdcbx,
 	.setdcbx	= hclge_setdcbx,
-	.map_update	= hclge_map_update,
 	.setup_tc	= hclge_setup_tc,
 };
 
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index 64b1589e549f..ae8336c18264 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -3843,8 +3843,16 @@ static int hclge_set_promisc_mode(struct hnae3_handle *handle, bool en_uc_pmc,
 	struct hclge_vport *vport = hclge_get_vport(handle);
 	struct hclge_dev *hdev = vport->back;
 	struct hclge_promisc_param param;
+	bool en_bc_pmc = true;
 
-	hclge_promisc_param_init(&param, en_uc_pmc, en_mc_pmc, true,
+	/* For revision 0x20, if broadcast promisc enabled, vlan filter is
+	 * always bypassed. So broadcast promisc should be disabled until
+	 * user enable promisc mode
+	 */
+	if (handle->pdev->revision == 0x20)
+		en_bc_pmc = handle->netdev_flags & HNAE3_BPE ? true : false;
+
+	hclge_promisc_param_init(&param, en_uc_pmc, en_mc_pmc, en_bc_pmc,
 				 vport->vport_id);
 	return hclge_cmd_set_promisc_mode(hdev, &param);
 }
@@ -5229,8 +5237,15 @@ static int hclge_set_serdes_loopback(struct hclge_dev *hdev, bool en,
 {
 #define HCLGE_SERDES_RETRY_MS	10
 #define HCLGE_SERDES_RETRY_NUM	100
+
+#define HCLGE_MAC_LINK_STATUS_MS   20
+#define HCLGE_MAC_LINK_STATUS_NUM  10
+#define HCLGE_MAC_LINK_STATUS_DOWN 0
+#define HCLGE_MAC_LINK_STATUS_UP   1
+
 	struct hclge_serdes_lb_cmd *req;
 	struct hclge_desc desc;
+	int mac_link_ret = 0;
 	int ret, i = 0;
 	u8 loop_mode_b;
 
@@ -5253,8 +5268,10 @@ static int hclge_set_serdes_loopback(struct hclge_dev *hdev, bool en,
 	if (en) {
 		req->enable = loop_mode_b;
 		req->mask = loop_mode_b;
+		mac_link_ret = HCLGE_MAC_LINK_STATUS_UP;
 	} else {
 		req->mask = loop_mode_b;
+		mac_link_ret = HCLGE_MAC_LINK_STATUS_DOWN;
 	}
 
 	ret = hclge_cmd_send(&hdev->hw, &desc, 1);
@@ -5286,7 +5303,19 @@ static int hclge_set_serdes_loopback(struct hclge_dev *hdev, bool en,
 	}
 
 	hclge_cfg_mac_mode(hdev, en);
-	return 0;
+
+	i = 0;
+	do {
+		/* serdes Internal loopback, independent of the network cable.*/
+		msleep(HCLGE_MAC_LINK_STATUS_MS);
+		ret = hclge_get_mac_link_status(hdev);
+		if (ret == mac_link_ret)
+			return 0;
+	} while (++i < HCLGE_MAC_LINK_STATUS_NUM);
+
+	dev_err(&hdev->pdev->dev, "config mac mode timeout\n");
+
+	return -EBUSY;
 }
 
 static int hclge_tqp_enable(struct hclge_dev *hdev, int tqp_id,
@@ -5332,6 +5361,9 @@ static int hclge_set_loopback(struct hnae3_handle *handle,
 		break;
 	}
 
+	if (ret)
+		return ret;
+
 	kinfo = &vport->nic.kinfo;
 	for (i = 0; i < kinfo->num_tqps; i++) {
 		ret = hclge_tqp_enable(hdev, i, 0, en);
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
index a1de451a85df..3603034aa45c 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
@@ -203,12 +203,11 @@ static int hclge_map_unmap_ring_to_vf_vector(struct hclge_vport *vport, bool en,
 static int hclge_set_vf_promisc_mode(struct hclge_vport *vport,
 				     struct hclge_mbx_vf_to_pf_cmd *req)
 {
-	bool en_uc = req->msg[1] ? true : false;
-	bool en_mc = req->msg[2] ? true : false;
+	bool en_bc = req->msg[1] ? true : false;
 	struct hclge_promisc_param param;
 
-	/* always enable broadcast promisc bit */
-	hclge_promisc_param_init(&param, en_uc, en_mc, true, vport->vport_id);
+	/* vf is not allowed to enable unicast/multicast broadcast */
+	hclge_promisc_param_init(&param, false, false, en_bc, vport->vport_id);
 	return hclge_cmd_set_promisc_mode(vport->back, &param);
 }
 
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
index 24b54083b5f9..fc99a0c70164 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -969,33 +969,29 @@ static int hclgevf_put_vector(struct hnae3_handle *handle, int vector)
 }
 
 static int hclgevf_cmd_set_promisc_mode(struct hclgevf_dev *hdev,
-					bool en_uc_pmc, bool en_mc_pmc)
+					bool en_bc_pmc)
 {
 	struct hclge_mbx_vf_to_pf_cmd *req;
 	struct hclgevf_desc desc;
-	int status;
+	int ret;
 
 	req = (struct hclge_mbx_vf_to_pf_cmd *)desc.data;
 
 	hclgevf_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_MBX_VF_TO_PF, false);
 	req->msg[0] = HCLGE_MBX_SET_PROMISC_MODE;
-	req->msg[1] = en_uc_pmc ? 1 : 0;
-	req->msg[2] = en_mc_pmc ? 1 : 0;
+	req->msg[1] = en_bc_pmc ? 1 : 0;
 
-	status = hclgevf_cmd_send(&hdev->hw, &desc, 1);
-	if (status)
+	ret = hclgevf_cmd_send(&hdev->hw, &desc, 1);
+	if (ret)
 		dev_err(&hdev->pdev->dev,
-			"Set promisc mode fail, status is %d.\n", status);
+			"Set promisc mode fail, status is %d.\n", ret);
 
-	return status;
+	return ret;
 }
 
-static int hclgevf_set_promisc_mode(struct hnae3_handle *handle,
-				    bool en_uc_pmc, bool en_mc_pmc)
+static int hclgevf_set_promisc_mode(struct hclgevf_dev *hdev, bool en_bc_pmc)
 {
-	struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
-
-	return hclgevf_cmd_set_promisc_mode(hdev, en_uc_pmc, en_mc_pmc);
+	return hclgevf_cmd_set_promisc_mode(hdev, en_bc_pmc);
 }
 
 static int hclgevf_tqp_enable(struct hclgevf_dev *hdev, int tqp_id,
@@ -2382,6 +2378,15 @@ static int hclgevf_init_hdev(struct hclgevf_dev *hdev)
 	if (ret)
 		goto err_config;
 
+	/* vf is not allowed to enable unicast/multicast promisc mode.
+	 * For revision 0x20, default to disable broadcast promisc mode,
+	 * firmware makes sure broadcast packets can be accepted.
+	 * For revision 0x21, default to enable broadcast promisc mode.
+	 */
+	ret = hclgevf_set_promisc_mode(hdev, true);
+	if (ret)
+		goto err_config;
+
 	/* Initialize RSS for this VF */
 	ret = hclgevf_rss_init_hw(hdev);
 	if (ret) {
@@ -2646,7 +2651,6 @@ static const struct hnae3_ae_ops hclgevf_ops = {
 	.get_vector = hclgevf_get_vector,
 	.put_vector = hclgevf_put_vector,
 	.reset_queue = hclgevf_reset_tqp,
-	.set_promisc_mode = hclgevf_set_promisc_mode,
 	.get_mac_addr = hclgevf_get_mac_addr,
 	.set_mac_addr = hclgevf_set_mac_addr,
 	.add_uc_addr = hclgevf_add_uc_addr,