From f4b6431fab7c7162824b541cb194b476e5f7bfe6 Mon Sep 17 00:00:00 2001
From: Jian Shen <shenjian15@huawei.com>
Date: Sun, 6 Dec 2020 12:06:14 +0800
Subject: [PATCH 087/283] net: hns3: add priv flags support to switch limit
 promisc mode

mainline inclusion
from mainline-v5.11-rc1
commit 5e7414cdf1abea7e2fc19a3190aa7b0d0b1e629d
category: feature
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8EMUR

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5e7414cdf1abea7e2fc19a3190aa7b0d0b1e629d

--------------------------------

Currently, the tx unicast promisc is always enabled when promisc
mode on. If tx unicast promisc on, a function will receive all
unicast packet from other functions belong to the same port.
Add a ethtool private flag to control whether enable tx
unicast promisc. Then the function is able to filter the
unknown unicast packets from other function.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Xiaodong Li <lixiaodong67@huawei.com>

 Conflicts:
	drivers/net/ethernet/hisilicon/hns3/hnae3.h
	drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
	drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
	drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
	drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
---
 .../net/ethernet/hisilicon/hns3/hclge_mbx.h   |  1 +
 drivers/net/ethernet/hisilicon/hns3/hnae3.h   | 10 +++
 .../net/ethernet/hisilicon/hns3/hns3_enet.c   |  3 +
 .../ethernet/hisilicon/hns3/hns3_ethtool.c    | 86 +++++++++++++++++++
 .../hisilicon/hns3/hns3pf/hclge_cmd.h         | 17 ++--
 .../hisilicon/hns3/hns3pf/hclge_main.c        | 10 +--
 .../hisilicon/hns3/hns3pf/hclge_mbx.c         |  6 ++
 .../hisilicon/hns3/hns3vf/hclgevf_main.c      |  7 ++
 8 files changed, 127 insertions(+), 13 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h b/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h
index bfd6f19aa65a..5a13eea2742d 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h
@@ -122,6 +122,7 @@ struct hclge_vf_to_pf_msg {
 			u8 en_bc;
 			u8 en_uc;
 			u8 en_mc;
+			u8 en_limit_promisc;
 		};
 		struct {
 			u8 vector_id;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
index 5c38c7a02912..738baccf5a8a 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
@@ -853,6 +853,11 @@ struct hnae3_unic_private_info {
 #define HNAE3_MPE		(HNAE3_USER_MPE | HNAE3_OVERFLOW_MPE)
 #define HNAE3_OVERFLOW_UMPE	(HNAE3_OVERFLOW_UPE | HNAE3_OVERFLOW_MPE)
 
+enum hnae3_pflag {
+	HNAE3_PFLAG_LIMIT_PROMISC,
+	HNAE3_PFLAG_MAX
+};
+
 struct hnae3_handle {
 	struct hnae3_client *client;
 	struct pci_dev *pdev;
@@ -885,6 +890,11 @@ struct hnae3_handle {
 	/* for sysfs */
 	struct kobject *kobj;
 #endif
+
+#ifndef __GENKSYMS__
+	unsigned long supported_pflags;
+	unsigned long priv_flags;
+#endif
 };
 
 #define hnae3_set_field(origin, mask, shift, val) \
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 3ca646e15345..7600a2e4a645 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -4371,6 +4371,9 @@ static int hns3_client_init(struct hnae3_handle *handle)
 
 	set_bit(HNS3_NIC_STATE_INITED, &priv->state);
 
+	if (ae_dev->dev_version >= HNAE3_DEVICE_VERSION_V3)
+		set_bit(HNAE3_PFLAG_LIMIT_PROMISC, &handle->supported_pflags);
+
 	ret = register_netdev(netdev);
 	if (ret) {
 		dev_err(priv->dev, "probe register netdev fail!\n");
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
index c42c6163ac80..ae22adfe5740 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
@@ -22,6 +22,11 @@ struct hns3_sfp_type {
 	u8 ext_type;
 };
 
+struct hns3_pflag_desc {
+	char name[ETH_GSTRING_LEN];
+	void (*handler)(struct net_device *netdev, bool enable);
+};
+
 /* tqp related stats */
 #define HNS3_TQP_STAT(_string, _member)	{			\
 	.stats_string = _string,				\
@@ -65,6 +70,8 @@ static const struct hns3_stats hns3_rxq_stats[] = {
 	HNS3_TQP_STAT("non_reuse_pg", non_reuse_pg),
 };
 
+#define HNS3_PRIV_FLAGS_LEN ARRAY_SIZE(hns3_priv_flags)
+
 #define HNS3_RXQ_STATS_COUNT ARRAY_SIZE(hns3_rxq_stats)
 
 #define HNS3_TQP_STATS_COUNT (HNS3_TXQ_STATS_COUNT + HNS3_RXQ_STATS_COUNT)
@@ -408,6 +415,23 @@ static void hns3_self_test(struct net_device *ndev,
 		netdev_info(ndev, "self test end\n");
 }
 
+static void hns3_update_limit_promisc_mode(struct net_device *netdev,
+					   bool enable)
+{
+	struct hnae3_handle *handle = hns3_get_handle(netdev);
+
+	if (enable)
+		set_bit(HNAE3_PFLAG_LIMIT_PROMISC, &handle->priv_flags);
+	else
+		clear_bit(HNAE3_PFLAG_LIMIT_PROMISC, &handle->priv_flags);
+
+	hns3_request_update_promisc_mode(handle);
+}
+
+static const struct hns3_pflag_desc hns3_priv_flags[HNAE3_PFLAG_MAX] = {
+	{ "limit_promisc",	hns3_update_limit_promisc_mode }
+};
+
 static int hns3_get_sset_count(struct net_device *netdev, int stringset)
 {
 	struct hnae3_handle *h = hns3_get_handle(netdev);
@@ -424,6 +448,9 @@ static int hns3_get_sset_count(struct net_device *netdev, int stringset)
 	case ETH_SS_TEST:
 		return ops->get_sset_count(h, stringset);
 
+	case ETH_SS_PRIV_FLAGS:
+		return HNAE3_PFLAG_MAX;
+
 	default:
 		return -EOPNOTSUPP;
 	}
@@ -477,6 +504,7 @@ static void hns3_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
 	struct hnae3_handle *h = hns3_get_handle(netdev);
 	const struct hnae3_ae_ops *ops = h->ae_algo->ops;
 	char *buff = (char *)data;
+	int i;
 
 	if (!ops->get_strings)
 		return;
@@ -489,6 +517,13 @@ static void hns3_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
 	case ETH_SS_TEST:
 		ops->get_strings(h, stringset, data);
 		break;
+	case ETH_SS_PRIV_FLAGS:
+		for (i = 0; i < HNS3_PRIV_FLAGS_LEN; i++) {
+			snprintf(buff, ETH_GSTRING_LEN, "%s",
+				 hns3_priv_flags[i].name);
+			buff += ETH_GSTRING_LEN;
+		}
+		break;
 	default:
 		break;
 	}
@@ -1522,6 +1557,53 @@ static int hns3_get_module_eeprom(struct net_device *netdev,
 	return ops->get_module_eeprom(handle, ee->offset, ee->len, data);
 }
 
+static u32 hns3_get_priv_flags(struct net_device *netdev)
+{
+	struct hnae3_handle *handle = hns3_get_handle(netdev);
+
+	return handle->priv_flags;
+}
+
+static int hns3_check_priv_flags(struct hnae3_handle *h, u32 changed)
+{
+	u32 i;
+
+	for (i = 0; i < HNAE3_PFLAG_MAX; i++)
+		if ((changed & BIT(i)) && !test_bit(i, &h->supported_pflags)) {
+			netdev_err(h->netdev, "%s is unsupported\n",
+				   hns3_priv_flags[i].name);
+			return -EOPNOTSUPP;
+		}
+
+	return 0;
+}
+
+static int hns3_set_priv_flags(struct net_device *netdev, u32 pflags)
+{
+	struct hnae3_handle *handle = hns3_get_handle(netdev);
+	u32 changed = pflags ^ handle->priv_flags;
+	int ret;
+	u32 i;
+
+	ret = hns3_check_priv_flags(handle, changed);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < HNAE3_PFLAG_MAX; i++) {
+		if (changed & BIT(i)) {
+			bool enable = !(handle->priv_flags & BIT(i));
+
+			if (enable)
+				handle->priv_flags |= BIT(i);
+			else
+				handle->priv_flags &= ~BIT(i);
+			hns3_priv_flags[i].handler(netdev, enable);
+		}
+	}
+
+	return 0;
+}
+
 #define HNS3_ETHTOOL_COALESCE	(ETHTOOL_COALESCE_USECS |		\
 				 ETHTOOL_COALESCE_USE_ADAPTIVE |	\
 				 ETHTOOL_COALESCE_RX_USECS_HIGH |	\
@@ -1563,6 +1645,8 @@ static const struct ethtool_ops hns3vf_ethtool_ops = {
 	.get_link = hns3_get_link,
 	.get_msglevel = hns3_get_msglevel,
 	.set_msglevel = hns3_set_msglevel,
+	.get_priv_flags = hns3_get_priv_flags,
+	.set_priv_flags = hns3_set_priv_flags,
 };
 
 static const struct ethtool_ops hns3_ethtool_ops = {
@@ -1599,6 +1683,8 @@ static const struct ethtool_ops hns3_ethtool_ops = {
 	.set_fecparam = hns3_set_fecparam,
 	.get_module_info = hns3_get_module_info,
 	.get_module_eeprom = hns3_get_module_eeprom,
+	.get_priv_flags = hns3_get_priv_flags,
+	.set_priv_flags = hns3_set_priv_flags,
 	.get_ts_info = hns3_get_ts_info,
 };
 
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
index 4d89efaf4aed..ba10e18ddb7e 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
@@ -599,23 +599,24 @@ struct hclge_link_status_cmd {
 	u8 rsv[23];
 };
 
+#define HCLGE_PROMISC_TX_EN_B	BIT(4)
+#define HCLGE_PROMISC_RX_EN_B	BIT(5)
+#define HCLGE_PROMISC_EN_B	1
+#define HCLGE_PROMISC_EN_ALL   0x7
+#define HCLGE_PROMISC_EN_UC    0x1
+#define HCLGE_PROMISC_EN_MC    0x2
+#define HCLGE_PROMISC_EN_BC    0x4
+
 struct hclge_promisc_param {
 	u8 vf_id;
 	u8 enable;
 };
 
-#define HCLGE_PROMISC_TX_EN_B	BIT(4)
-#define HCLGE_PROMISC_RX_EN_B	BIT(5)
-#define HCLGE_PROMISC_EN_B	1
-#define HCLGE_PROMISC_EN_ALL	0x7
-#define HCLGE_PROMISC_EN_UC	0x1
-#define HCLGE_PROMISC_EN_MC	0x2
-#define HCLGE_PROMISC_EN_BC	0x4
 struct hclge_promisc_cfg_cmd {
 	u8 flag;
 	u8 vf_id;
 	__le16 rsv0;
-	u8 rsv1[20];
+	u8 rsv1[21];
 };
 
 enum hclge_promisc_type {
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index d4db7a84f279..d46a1d31c701 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -5109,20 +5109,20 @@ static int hclge_cmd_set_promisc_mode(struct hclge_dev *hdev,
 	 * send command to fireware in revision(0x20).
 	 */
 	req->flag = (param->enable << HCLGE_PROMISC_EN_B) |
-		HCLGE_PROMISC_TX_EN_B | HCLGE_PROMISC_RX_EN_B;
+		    HCLGE_PROMISC_TX_EN_B | HCLGE_PROMISC_RX_EN_B;
 
 	ret = hclge_cmd_send(&hdev->hw, &desc, 1);
 	if (ret)
 		dev_err(&hdev->pdev->dev,
-			"Set vport %d promisc mode fail, ret = %d.\n",
-			param->vf_id, ret);
+		       "failed to set vport %d promisc mode, ret = %d.\n",
+		       param->vf_id, ret);
 
 	return ret;
 }
 
 static void hclge_promisc_param_init(struct hclge_promisc_param *param,
-				     bool en_uc, bool en_mc, bool en_bc,
-				     int vport_id)
+				    bool en_uc, bool en_mc, bool en_bc,
+				    int vport_id)
 {
 	if (!param)
 		return;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
index 841c9b0c9fe4..a9dd7d0601ab 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
@@ -327,11 +327,17 @@ static void hclge_set_vf_promisc_mode(struct hclge_vport *vport,
 				      struct hclge_mbx_vf_to_pf_cmd *req)
 {
 	struct hclge_dev *hdev = vport->back;
+	struct hnae3_handle *handle = &vport->nic;
 
 	vport->vf_info.request_uc_en = req->msg.en_uc;
 	vport->vf_info.request_mc_en = req->msg.en_mc;
 	vport->vf_info.request_bc_en = req->msg.en_bc;
 
+	if (req->msg.en_limit_promisc)
+		set_bit(HNAE3_PFLAG_LIMIT_PROMISC, &handle->priv_flags);
+	else
+		clear_bit(HNAE3_PFLAG_LIMIT_PROMISC, &handle->priv_flags);
+
 	set_bit(HCLGE_VPORT_STATE_PROMISC_CHANGE, &vport->state);
 	hclge_task_schedule(hdev, 0);
 }
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
index db292ca270b8..d58b4e4780a8 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -15,6 +15,9 @@
 #define HCLGEVF_RESET_MAX_FAIL_CNT	5
 
 static int hclgevf_reset_hdev(struct hclgevf_dev *hdev);
+static void hclgevf_task_schedule(struct hclgevf_dev *hdev,
+				  unsigned long delay);
+
 static struct hnae3_ae_algo ae_algovf;
 
 static struct workqueue_struct *hclgevf_wq;
@@ -1177,6 +1180,7 @@ static int hclgevf_cmd_set_promisc_mode(struct hclgevf_dev *hdev,
 					bool en_uc_pmc, bool en_mc_pmc,
 					bool en_bc_pmc)
 {
+	struct hnae3_handle *handle = &hdev->nic;
 	struct hclge_vf_to_pf_msg send_msg;
 	int ret;
 
@@ -1185,6 +1189,8 @@ static int hclgevf_cmd_set_promisc_mode(struct hclgevf_dev *hdev,
 	send_msg.en_bc = en_bc_pmc ? 1 : 0;
 	send_msg.en_uc = en_uc_pmc ? 1 : 0;
 	send_msg.en_mc = en_mc_pmc ? 1 : 0;
+	send_msg.en_limit_promisc = test_bit(HNAE3_PFLAG_LIMIT_PROMISC,
+					     &handle->priv_flags) ? 1 : 0;
 
 	ret = hclgevf_send_mbx_msg(hdev, &send_msg, false, NULL, 0);
 	if (ret)
@@ -1211,6 +1217,7 @@ static void hclgevf_request_update_promisc_mode(struct hnae3_handle *handle)
 	struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
 
 	set_bit(HCLGEVF_STATE_PROMISC_CHANGED, &hdev->state);
+	hclgevf_task_schedule(hdev, 0);
 }
 
 static void hclgevf_sync_promisc_mode(struct hclgevf_dev *hdev)
-- 
2.34.1

