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Message-ID: <20240822132031.29494-11-gakula@marvell.com>
Date: Thu, 22 Aug 2024 18:50:30 +0530
From: Geetha sowjanya <gakula@...vell.com>
To: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: <kuba@...nel.org>, <davem@...emloft.net>, <pabeni@...hat.com>,
<jiri@...nulli.us>, <edumazet@...gle.com>, <sgoutham@...vell.com>,
<gakula@...vell.com>, <sbhatta@...vell.com>, <hkelam@...vell.com>
Subject: [net-next PATCH v11 10/11] octeontx2-pf: Add devlink port support
Register devlink port for the rvu representors.
Signed-off-by: Geetha sowjanya <gakula@...vell.com>
Reviewed-by: Simon Horman <horms@...nel.org>
---
.../ethernet/marvell/octeontx2.rst | 39 ++++++++
.../net/ethernet/marvell/octeontx2/nic/rep.c | 91 +++++++++++++++++++
.../net/ethernet/marvell/octeontx2/nic/rep.h | 2 +
3 files changed, 132 insertions(+)
diff --git a/Documentation/networking/device_drivers/ethernet/marvell/octeontx2.rst b/Documentation/networking/device_drivers/ethernet/marvell/octeontx2.rst
index 1132ae2d007c..33258cc18f45 100644
--- a/Documentation/networking/device_drivers/ethernet/marvell/octeontx2.rst
+++ b/Documentation/networking/device_drivers/ethernet/marvell/octeontx2.rst
@@ -393,3 +393,42 @@ To remove the representors devices from the system. Change the device to legacy
- Change device to legacy mode::
# devlink dev eswitch set pci/0002:1c:00.0 mode legacy
+
+
+RVU representors can be managed using devlink ports
+(see :ref:`Documentation/networking/devlink/devlink-port.rst <devlink_port>`) interface.
+
+ - Show devlink ports of representors::
+
+ # devlink port
+
+Sample output::
+
+ # devlink port
+ pci/0002:1c:00.0/0: type eth netdev pf1vf0rep flavour physical port 1 splittable false
+ pci/0002:1c:00.0/1: type eth netdev pf1vf1rep flavour pcivf controller 0 pfnum 1 vfnum 1 external false splittable false
+ pci/0002:1c:00.0/2: type eth netdev pf1vf2rep flavour pcivf controller 0 pfnum 1 vfnum 2 external false splittable false
+ pci/0002:1c:00.0/3: type eth netdev pf1vf3rep flavour pcivf controller 0 pfnum 1 vfnum 3 external false splittable false
+
+Function attributes
+===================
+
+The RVU representor support function attributes for representors.
+Port function configuration of the representors are supported through devlink eswitch port.
+
+MAC address setup
+-----------------
+
+RVU representor driver support devlink port function attr mechanism to setup MAC
+address. (refer to Documentation/networking/devlink/devlink-port.rst)
+
+ - To setup MAC address for port 2::
+
+ # devlink port function set pci/0002:1c:00.0/2 hw_addr 5c:a1:1b:5e:43:11
+
+Sample output::
+
+ # devlink port show pci/0002:1c:00.0/2
+ pci/0002:1c:00.0/2: type eth netdev pf1vf2rep flavour pcivf controller 0 pfnum 1 vfnum 2 external false splittable false
+ function:
+ hw_addr 5c:a1:1b:5e:43:11
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
index 5f767b6e79c3..aab1784b5134 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
@@ -28,6 +28,90 @@ MODULE_DESCRIPTION(DRV_STRING);
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
+static int rvu_rep_dl_port_fn_hw_addr_get(struct devlink_port *port,
+ u8 *hw_addr, int *hw_addr_len,
+ struct netlink_ext_ack *extack)
+{
+ struct otx2_devlink *otx2_dl = devlink_priv(port->devlink);
+ int rep_id = port->index;
+ struct otx2_nic *priv;
+ struct rep_dev *rep;
+
+ priv = otx2_dl->pfvf;
+ rep = priv->reps[rep_id];
+ ether_addr_copy(hw_addr, rep->mac);
+ *hw_addr_len = ETH_ALEN;
+ return 0;
+}
+
+static int rvu_rep_dl_port_fn_hw_addr_set(struct devlink_port *port,
+ const u8 *hw_addr, int hw_addr_len,
+ struct netlink_ext_ack *extack)
+{
+ struct otx2_devlink *otx2_dl = devlink_priv(port->devlink);
+ int rep_id = port->index;
+ struct otx2_nic *priv;
+ struct rep_dev *rep;
+
+ priv = otx2_dl->pfvf;
+ rep = priv->reps[rep_id];
+ eth_hw_addr_set(rep->netdev, hw_addr);
+ ether_addr_copy(rep->mac, hw_addr);
+ return 0;
+}
+
+static const struct devlink_port_ops rvu_rep_dl_port_ops = {
+ .port_fn_hw_addr_get = rvu_rep_dl_port_fn_hw_addr_get,
+ .port_fn_hw_addr_set = rvu_rep_dl_port_fn_hw_addr_set,
+};
+
+static void
+rvu_rep_devlink_set_switch_id(struct otx2_nic *priv,
+ struct netdev_phys_item_id *ppid)
+{
+ struct pci_dev *pdev = priv->pdev;
+ u64 id;
+
+ id = pci_get_dsn(pdev);
+
+ ppid->id_len = sizeof(id);
+ put_unaligned_be64(id, &ppid->id);
+}
+
+static void rvu_rep_devlink_port_unregister(struct rep_dev *rep)
+{
+ devlink_port_unregister(&rep->dl_port);
+}
+
+static int rvu_rep_devlink_port_register(struct rep_dev *rep)
+{
+ struct devlink_port_attrs attrs = {};
+ struct otx2_nic *priv = rep->mdev;
+ struct devlink *dl = priv->dl->dl;
+ int err;
+
+ if (!(rep->pcifunc & RVU_PFVF_FUNC_MASK)) {
+ attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
+ attrs.phys.port_number = rvu_get_pf(rep->pcifunc);
+ } else {
+ attrs.flavour = DEVLINK_PORT_FLAVOUR_PCI_VF;
+ attrs.pci_vf.pf = rvu_get_pf(rep->pcifunc);
+ attrs.pci_vf.vf = rep->pcifunc & RVU_PFVF_FUNC_MASK;
+ }
+
+ rvu_rep_devlink_set_switch_id(priv, &attrs.switch_id);
+ devlink_port_attrs_set(&rep->dl_port, &attrs);
+
+ err = devl_port_register_with_ops(dl, &rep->dl_port, rep->rep_id,
+ &rvu_rep_dl_port_ops);
+ if (err) {
+ dev_err(rep->mdev->dev, "devlink_port_register failed: %d\n",
+ err);
+ return err;
+ }
+ return 0;
+}
+
static int rvu_rep_get_repid(struct otx2_nic *priv, u16 pcifunc)
{
int rep_id;
@@ -339,6 +423,7 @@ void rvu_rep_destroy(struct otx2_nic *priv)
for (rep_id = 0; rep_id < priv->rep_cnt; rep_id++) {
rep = priv->reps[rep_id];
unregister_netdev(rep->netdev);
+ rvu_rep_devlink_port_unregister(rep);
free_netdev(rep->netdev);
}
kfree(priv->reps);
@@ -381,6 +466,11 @@ int rvu_rep_create(struct otx2_nic *priv, struct netlink_ext_ack *extack)
snprintf(ndev->name, sizeof(ndev->name), "p%dv%drep",
rvu_get_pf(pcifunc), (pcifunc & RVU_PFVF_FUNC_MASK));
+ err = rvu_rep_devlink_port_register(rep);
+ if (err)
+ goto exit;
+
+ SET_NETDEV_DEVLINK_PORT(ndev, &rep->dl_port);
eth_hw_addr_random(ndev);
err = register_netdev(ndev);
if (err) {
@@ -402,6 +492,7 @@ int rvu_rep_create(struct otx2_nic *priv, struct netlink_ext_ack *extack)
while (--rep_id >= 0) {
rep = priv->reps[rep_id];
unregister_netdev(rep->netdev);
+ rvu_rep_devlink_port_unregister(rep);
free_netdev(rep->netdev);
}
kfree(priv->reps);
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
index 0cefa482f83c..d81af376bf50 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
@@ -34,10 +34,12 @@ struct rep_dev {
struct net_device *netdev;
struct rep_stats stats;
struct delayed_work stats_wrk;
+ struct devlink_port dl_port;
u16 rep_id;
u16 pcifunc;
#define RVU_REP_VF_INITIALIZED BIT_ULL(0)
u8 flags;
+ u8 mac[ETH_ALEN];
};
static inline bool otx2_rep_dev(struct pci_dev *pdev)
--
2.25.1
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