From: Parav Pandit <parav@nvidia.com>
Date: Wed, 9 Sep 2020 07:50:36 +0300
Subject: devlink: Introduce external controller flag
Patch-mainline: v5.10-rc1
Git-commit: 05b595e9c44acaca94192c6db430a489c1b212a7
References: bsc#1176447
A devlink eswitch port may represent PCI PF/VF ports of a controller.
A controller either located on same system or it can be an external
controller located in host where such NIC is plugged in.
Add the ability for driver to specify if a port is for external
controller.
Use such flag in the mlx5_core driver.
An example of an external controller having VF1 of PF0 belong to
controller 1.
$ devlink port show pci/0000:06:00.0/2
pci/0000:06:00.0/2: type eth netdev ens2f0pf0vf1 flavour pcivf pfnum 0 vfnum 1 external true splittable false
function:
hw_addr 00:00:00:00:00:00
$ devlink port show pci/0000:06:00.0/2 -jp
{
"port": {
"pci/0000:06:00.0/2": {
"type": "eth",
"netdev": "ens2f0pf0vf1",
"flavour": "pcivf",
"pfnum": 0,
"vfnum": 1,
"external": true,
"splittable": false,
"function": {
"hw_addr": "00:00:00:00:00:00"
}
}
}
}
Signed-off-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 6 ++++--
include/net/devlink.h | 8 ++++++--
include/uapi/linux/devlink.h | 1 +
net/core/devlink.c | 12 ++++++++++--
4 files changed, 21 insertions(+), 6 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -1215,11 +1215,13 @@ static int register_devlink_port(struct
struct devlink_port_attrs attrs = {};
struct netdev_phys_item_id ppid = {};
unsigned int dl_port_index = 0;
+ bool external;
u16 pfnum;
if (!is_devlink_port_supported(dev, rpriv))
return 0;
+ external = mlx5_core_is_ecpf_esw_manager(dev);
mlx5e_rep_get_port_parent_id(rpriv->netdev, &ppid);
dl_port_index = mlx5_esw_vport_to_devlink_port_index(dev, rep->vport);
pfnum = PCI_FUNC(dev->pdev->devfn);
@@ -1232,12 +1234,12 @@ static int register_devlink_port(struct
} else if (rep->vport == MLX5_VPORT_PF) {
memcpy(rpriv->dl_port.attrs.switch_id.id, &ppid.id[0], ppid.id_len);
rpriv->dl_port.attrs.switch_id.id_len = ppid.id_len;
- devlink_port_attrs_pci_pf_set(&rpriv->dl_port, pfnum);
+ devlink_port_attrs_pci_pf_set(&rpriv->dl_port, pfnum, external);
} else if (mlx5_eswitch_is_vf_vport(dev->priv.eswitch, rpriv->rep->vport)) {
memcpy(rpriv->dl_port.attrs.switch_id.id, &ppid.id[0], ppid.id_len);
rpriv->dl_port.attrs.switch_id.id_len = ppid.id_len;
devlink_port_attrs_pci_vf_set(&rpriv->dl_port,
- pfnum, rep->vport - 1);
+ pfnum, rep->vport - 1, external);
}
return devlink_port_register(devlink, &rpriv->dl_port, dl_port_index);
}
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -60,19 +60,23 @@ struct devlink_port_phys_attrs {
/**
* struct devlink_port_pci_pf_attrs - devlink port's PCI PF attributes
* @pf: Associated PCI PF number for this port.
+ * @external: when set, indicates if a port is for an external controller
*/
struct devlink_port_pci_pf_attrs {
u16 pf;
+ u8 external:1;
};
/**
* struct devlink_port_pci_vf_attrs - devlink port's PCI VF attributes
* @pf: Associated PCI PF number for this port.
* @vf: Associated PCI VF for of the PCI PF for this port.
+ * @external: when set, indicates if a port is for an external controller
*/
struct devlink_port_pci_vf_attrs {
u16 pf;
u16 vf;
+ u8 external:1;
};
/**
@@ -1215,9 +1219,9 @@ void devlink_port_type_ib_set(struct dev
void devlink_port_type_clear(struct devlink_port *devlink_port);
void devlink_port_attrs_set(struct devlink_port *devlink_port,
struct devlink_port_attrs *devlink_port_attrs);
-void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u16 pf);
+void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u16 pf, bool external);
void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port,
- u16 pf, u16 vf);
+ u16 pf, u16 vf, bool external);
int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
u32 size, u16 ingress_pools_count,
u16 egress_pools_count, u16 ingress_tc_count,
--- a/include/uapi/linux/devlink.h
+++ b/include/uapi/linux/devlink.h
@@ -458,6 +458,7 @@ enum devlink_attr {
DEVLINK_ATTR_PORT_LANES, /* u32 */
DEVLINK_ATTR_PORT_SPLITTABLE, /* u8 */
+ DEVLINK_ATTR_PORT_EXTERNAL, /* u8 */
/* add new attributes above here, update the policy in devlink.c */
__DEVLINK_ATTR_MAX,
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -526,6 +526,8 @@ static int devlink_nl_port_attrs_put(str
if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
attrs->pci_pf.pf))
return -EMSGSIZE;
+ if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external))
+ return -EMSGSIZE;
break;
case DEVLINK_PORT_FLAVOUR_PCI_VF:
if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
@@ -533,6 +535,8 @@ static int devlink_nl_port_attrs_put(str
nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER,
attrs->pci_vf.vf))
return -EMSGSIZE;
+ if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external))
+ return -EMSGSIZE;
break;
case DEVLINK_PORT_FLAVOUR_PHYSICAL:
case DEVLINK_PORT_FLAVOUR_CPU:
@@ -7716,8 +7720,9 @@ EXPORT_SYMBOL_GPL(devlink_port_attrs_set
*
* @devlink_port: devlink port
* @pf: associated PF for the devlink port instance
+ * @external: indicates if the port is for an external controller
*/
-void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u16 pf)
+void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u16 pf, bool external)
{
struct devlink_port_attrs *attrs = &devlink_port->attrs;
int ret;
@@ -7728,6 +7733,7 @@ void devlink_port_attrs_pci_pf_set(struc
return;
attrs->pci_pf.pf = pf;
+ attrs->pci_pf.external = external;
}
EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
@@ -7737,9 +7743,10 @@ EXPORT_SYMBOL_GPL(devlink_port_attrs_pci
* @devlink_port: devlink port
* @pf: associated PF for the devlink port instance
* @vf: associated VF of a PF for the devlink port instance
+ * @external: indicates if the port is for an external controller
*/
void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port,
- u16 pf, u16 vf)
+ u16 pf, u16 vf, bool external)
{
struct devlink_port_attrs *attrs = &devlink_port->attrs;
int ret;
@@ -7750,6 +7757,7 @@ void devlink_port_attrs_pci_vf_set(struc
return;
attrs->pci_vf.pf = pf;
attrs->pci_vf.vf = vf;
+ attrs->pci_vf.external = external;
}
EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);