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Message-ID: <20241107121637.1117089-1-srasheed@marvell.com>
Date: Thu, 7 Nov 2024 04:16:37 -0800
From: Shinas Rasheed <srasheed@...vell.com>
To: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: <hgani@...vell.com>, <sedara@...vell.com>, <vimleshk@...vell.com>,
        <thaller@...hat.com>, <wizhao@...hat.com>, <kheib@...hat.com>,
        <egallen@...hat.com>, <konguyen@...hat.com>, <horms@...nel.org>,
        <frank.feng@...axg.com>, Shinas Rasheed <srasheed@...vell.com>,
        Veerasenareddy Burru <vburru@...vell.com>,
        Andrew Lunn
	<andrew+netdev@...n.ch>,
        "David S. Miller" <davem@...emloft.net>,
        "Eric
 Dumazet" <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>
Subject: [PATCH net-next] octeon_ep: add ndo ops for VFs in PF driver

These APIs are needed to support applicaitons that use netlink to get VF
information from a PF driver.

Signed-off-by: Shinas Rasheed <srasheed@...vell.com>
---
 .../ethernet/marvell/octeon_ep/octep_main.c   | 98 +++++++++++++++++++
 .../ethernet/marvell/octeon_ep/octep_main.h   |  1 +
 .../marvell/octeon_ep/octep_pfvf_mbox.c       | 22 ++++-
 .../marvell/octeon_ep/octep_pfvf_mbox.h       |  3 +
 4 files changed, 122 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
index 549436efc204..129c68f5a4ba 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
@@ -1137,6 +1137,95 @@ static int octep_set_features(struct net_device *dev, netdev_features_t features
 	return err;
 }
 
+static int octep_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivi)
+{
+	struct octep_device *oct = netdev_priv(dev);
+
+	ivi->vf = vf;
+	ether_addr_copy(ivi->mac, oct->vf_info[vf].mac_addr);
+	ivi->vlan = 0;
+	ivi->qos = 0;
+	ivi->spoofchk = 0;
+	ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
+	ivi->trusted = true;
+	ivi->max_tx_rate = 10000;
+	ivi->min_tx_rate = 0;
+
+	return 0;
+}
+
+static int octep_set_vf_mac(struct net_device *dev, int vf, u8 *mac)
+{
+	struct octep_device *oct = netdev_priv(dev);
+	int i, err;
+
+	if (!is_valid_ether_addr(mac)) {
+		dev_err(&oct->pdev->dev, "Invalid  MAC Address %pM\n", mac);
+		return -EADDRNOTAVAIL;
+	}
+
+	dev_dbg(&oct->pdev->dev, "set vf-%d mac to %pM\n", vf, mac);
+	for (i = 0; i < ETH_ALEN; i++)
+		oct->vf_info[vf].mac_addr[i] = mac[i];
+	oct->vf_info[vf].flags |=  OCTEON_PFVF_FLAG_MAC_SET_BY_PF;
+
+	err = octep_ctrl_net_set_mac_addr(oct, vf, mac, true);
+	if (err) {
+		dev_err(&oct->pdev->dev, "Set VF%d MAC address failed via host control Mbox\n", vf);
+		return err;
+	}
+
+	return 0;
+}
+
+static int octep_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos, __be16 vlan_proto)
+{
+	struct octep_device *oct = netdev_priv(dev);
+
+	dev_err(&oct->pdev->dev, "Setting VF VLAN not supported\n");
+	return 0;
+}
+
+static int octep_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
+{
+	struct octep_device *oct = netdev_priv(dev);
+
+	dev_err(&oct->pdev->dev, "Setting VF spoof check not supported\n");
+	return 0;
+}
+
+static int octep_set_vf_trust(struct net_device *dev, int vf, bool setting)
+{
+	struct octep_device *oct = netdev_priv(dev);
+
+	dev_err(&oct->pdev->dev, "Setting VF trust not supported\n");
+	return 0;
+}
+
+static int octep_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate, int max_tx_rate)
+{
+	struct octep_device *oct = netdev_priv(dev);
+
+	dev_err(&oct->pdev->dev, "Setting VF rate not supported\n");
+	return 0;
+}
+
+static int octep_set_vf_link_state(struct net_device *dev, int vf, int link_state)
+{
+	struct octep_device *oct = netdev_priv(dev);
+
+	dev_err(&oct->pdev->dev, "Setting VF link state not supported\n");
+	return 0;
+}
+
+static int octep_get_vf_stats(struct net_device *dev, int vf, struct ifla_vf_stats *vf_stats)
+{
+	struct octep_device *oct = netdev_priv(dev);
+
+	dev_err(&oct->pdev->dev, "Getting VF stats not supported\n");
+	return 0;
+}
+
 static const struct net_device_ops octep_netdev_ops = {
 	.ndo_open                = octep_open,
 	.ndo_stop                = octep_stop,
@@ -1146,6 +1235,15 @@ static const struct net_device_ops octep_netdev_ops = {
 	.ndo_set_mac_address     = octep_set_mac,
 	.ndo_change_mtu          = octep_change_mtu,
 	.ndo_set_features        = octep_set_features,
+	/* for VFs */
+	.ndo_get_vf_config       = octep_get_vf_config,
+	.ndo_set_vf_mac          = octep_set_vf_mac,
+	.ndo_set_vf_vlan         = octep_set_vf_vlan,
+	.ndo_set_vf_spoofchk     = octep_set_vf_spoofchk,
+	.ndo_set_vf_trust        = octep_set_vf_trust,
+	.ndo_set_vf_rate         = octep_set_vf_rate,
+	.ndo_set_vf_link_state   = octep_set_vf_link_state,
+	.ndo_get_vf_stats        = octep_get_vf_stats,
 };
 
 /**
diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.h b/drivers/net/ethernet/marvell/octeon_ep/octep_main.h
index fee59e0e0138..3b56916af468 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_main.h
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.h
@@ -220,6 +220,7 @@ struct octep_iface_link_info {
 /* The Octeon VF device specific info data structure.*/
 struct octep_pfvf_info {
 	u8 mac_addr[ETH_ALEN];
+	u32 flags;
 	u32 mbox_version;
 };
 
diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.c b/drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.c
index e6eb98d70f3c..be21ad5ec75e 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.c
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.c
@@ -156,12 +156,23 @@ static void octep_pfvf_set_mac_addr(struct octep_device *oct,  u32 vf_id,
 {
 	int err;
 
+	if (oct->vf_info[vf_id].flags & OCTEON_PFVF_FLAG_MAC_SET_BY_PF) {
+		dev_err(&oct->pdev->dev,
+			"VF%d attampted to override administrative set MAC address\n",
+			vf_id);
+		rsp->s_set_mac.type = OCTEP_PFVF_MBOX_TYPE_RSP_NACK;
+		return;
+	}
+
 	err = octep_ctrl_net_set_mac_addr(oct, vf_id, cmd.s_set_mac.mac_addr, true);
 	if (err) {
 		rsp->s_set_mac.type = OCTEP_PFVF_MBOX_TYPE_RSP_NACK;
-		dev_err(&oct->pdev->dev, "Set VF MAC address failed via host control Mbox\n");
+		dev_err(&oct->pdev->dev, "Set VF%d MAC address failed via host control Mbox\n",
+			vf_id);
 		return;
 	}
+
+	ether_addr_copy(oct->vf_info[vf_id].mac_addr, cmd.s_set_mac.mac_addr);
 	rsp->s_set_mac.type = OCTEP_PFVF_MBOX_TYPE_RSP_ACK;
 }
 
@@ -171,10 +182,17 @@ static void octep_pfvf_get_mac_addr(struct octep_device *oct,  u32 vf_id,
 {
 	int err;
 
+	if (oct->vf_info[vf_id].flags & OCTEON_PFVF_FLAG_MAC_SET_BY_PF) {
+		dev_dbg(&oct->pdev->dev, "VF%d MAC address set by PF\n", vf_id);
+		ether_addr_copy(rsp->s_set_mac.mac_addr, oct->vf_info[vf_id].mac_addr);
+		rsp->s_set_mac.type = OCTEP_PFVF_MBOX_TYPE_RSP_ACK;
+		return;
+	}
 	err = octep_ctrl_net_get_mac_addr(oct, vf_id, rsp->s_set_mac.mac_addr);
 	if (err) {
 		rsp->s_set_mac.type = OCTEP_PFVF_MBOX_TYPE_RSP_NACK;
-		dev_err(&oct->pdev->dev, "Get VF MAC address failed via host control Mbox\n");
+		dev_err(&oct->pdev->dev, "Get VF%d MAC address failed via host control Mbox\n",
+			vf_id);
 		return;
 	}
 	rsp->s_set_mac.type = OCTEP_PFVF_MBOX_TYPE_RSP_ACK;
diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.h b/drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.h
index 0dc6eead292a..339977c7131a 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.h
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.h
@@ -23,6 +23,9 @@ enum octep_pfvf_mbox_version {
 
 #define OCTEP_PFVF_MBOX_VERSION_CURRENT	OCTEP_PFVF_MBOX_VERSION_V2
 
+/* VF flags */
+#define OCTEON_PFVF_FLAG_MAC_SET_BY_PF  BIT_ULL(0) /* PF has set VF MAC address */
+
 enum octep_pfvf_mbox_opcode {
 	OCTEP_PFVF_MBOX_CMD_VERSION,
 	OCTEP_PFVF_MBOX_CMD_SET_MTU,
-- 
2.25.1


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