Allow users to get/set hardware address for the PCI port.
Below example creates one devlink port, queries a port, sets a
hardware address.
Example of a PCI SF port which supports a port function hw_addr set:
Create a device with ID=10 and one physical port.
$ echo "10 1" > /sys/bus/netdevsim/new_device
Add PCI PF port:
$ devlink port add netdevsim/netdevsim10 flavour pcipf pfnum 2
netdevsim/netdevsim10/1: type eth netdev eth1 flavour pcipf controller 0 pfnum
2 external false splittable false
function:
hw_addr 00:00:00:00:00:00
$ devlink port add netdevsim/netdevsim10 flavour pcisf pfnum 2
netdevsim/netdevsim10/2: type eth netdev eth2 flavour pcisf controller 0 pfnum
2 sfnum 0 splittable false
function:
hw_addr 00:00:00:00:00:00
Set the MAC address:
$ devlink port function set netdevsim/netdevsim10/2 hw_addr 00:11:22:33:44:55
Show devlink ports:
$ devlink port show
netdevsim/netdevsim10/0: type eth netdev eth0 flavour physical port 1
splittable false
netdevsim/netdevsim10/1: type eth netdev eth1 flavour pcipf controller 0 pfnum
2 external false splittable false
function:
hw_addr 00:00:00:00:00:00
netdevsim/netdevsim10/2: type eth netdev eth2 flavour pcisf controller 0 pfnum
2 sfnum 0 splittable false
function:
hw_addr 00:11:22:33:44:55
Show the port and function attributes in JSON format:
$ devlink port show netdevsim/netdevsim10/2 -jp
{
"port": {
"netdevsim/netdevsim10/2": {
"type": "eth",
"netdev": "eth2",
"flavour": "pcisf",
"controller": 0,
"pfnum": 2,
"sfnum": 0,
"splittable": false,
"function": {
"hw_addr": "00:11:22:33:44:55"
}
}
}
}
Signed-off-by: Parav Pandit <pa...@nvidia.com>
---
drivers/net/netdevsim/dev.c | 1 +
drivers/net/netdevsim/netdevsim.h | 4 ++++
drivers/net/netdevsim/port_function.c | 21 +++++++++++++++++++++
3 files changed, 26 insertions(+)
diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c
index 6046906d6b85..ab15b5f7e955 100644
--- a/drivers/net/netdevsim/dev.c
+++ b/drivers/net/netdevsim/dev.c
@@ -908,6 +908,7 @@ static const struct devlink_ops nsim_dev_devlink_ops = {
.port_new = nsim_dev_devlink_port_new,
.port_del = nsim_dev_devlink_port_del,
.port_function_hw_addr_get = nsim_dev_port_fn_hw_addr_get,
+ .port_function_hw_addr_set = nsim_dev_port_fn_hw_addr_set,
};
#define NSIM_DEV_MAX_MACS_DEFAULT 32
diff --git a/drivers/net/netdevsim/netdevsim.h
b/drivers/net/netdevsim/netdevsim.h
index e910c3cf480d..aafe2027a112 100644
--- a/drivers/net/netdevsim/netdevsim.h
+++ b/drivers/net/netdevsim/netdevsim.h
@@ -324,3 +324,7 @@ int nsim_dev_port_fn_hw_addr_get(struct devlink *devlink,
struct devlink_port *port,
u8 *hw_addr, int *hw_addr_len,
struct netlink_ext_ack *extack);
+int nsim_dev_port_fn_hw_addr_set(struct devlink *devlink,
+ struct devlink_port *port,
+ const u8 *hw_addr, int hw_addr_len,
+ struct netlink_ext_ack *extack);
diff --git a/drivers/net/netdevsim/port_function.c
b/drivers/net/netdevsim/port_function.c
index 4031598e2076..d47cdf44770a 100644
--- a/drivers/net/netdevsim/port_function.c
+++ b/drivers/net/netdevsim/port_function.c
@@ -461,3 +461,24 @@ int nsim_dev_port_fn_hw_addr_get(struct devlink *devlink,
*hw_addr_len = ETH_ALEN;
return 0;
}
+
+int nsim_dev_port_fn_hw_addr_set(struct devlink *devlink,
+ struct devlink_port *dl_port,
+ const u8 *hw_addr, int hw_addr_len,
+ struct netlink_ext_ack *extack)
+{
+ struct nsim_dev *nsim_dev = devlink_priv(devlink);
+ struct nsim_port_fn *port;
+
+ if (hw_addr_len != ETH_ALEN) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Hardware address must be 6 bytes long");
+ return -EOPNOTSUPP;
+ }
+ port = nsim_dev_to_port_fn(nsim_dev, dl_port, extack);
+ if (IS_ERR(port))
+ return PTR_ERR(port);
+
+ memcpy(port->hw_addr, hw_addr, ETH_ALEN);
+ return 0;
+}
--
2.26.2
