@@ -907,6 +907,7 @@ static const struct devlink_ops nsim_dev_devlink_ops = {
.trap_policer_counter_get = nsim_dev_devlink_trap_policer_counter_get,
.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,
};
#define NSIM_DEV_MAX_MACS_DEFAULT 32
@@ -320,3 +320,7 @@ int nsim_dev_devlink_port_new(struct devlink *devlink,
unsigned int *new_port_index);
int nsim_dev_devlink_port_del(struct devlink *devlink, unsigned int port_index,
struct netlink_ext_ack *extack);
+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);
@@ -16,6 +16,7 @@ struct nsim_port_fn {
int refcount; /* Counts how many sf ports are bound attached to this pf port. */
u32 sfnum;
u16 pfnum;
+ u8 hw_addr[ETH_ALEN];
};
static struct devlink_port *
@@ -431,3 +432,32 @@ void nsim_dev_port_fn_disable(struct nsim_dev *nsim_dev)
nsim_devlink_port_fn_free(nsim_dev, port);
}
}
+
+static struct nsim_port_fn *
+nsim_dev_to_port_fn(struct nsim_dev *nsim_dev, struct devlink_port *dl_port,
+ struct netlink_ext_ack *extack)
+{
+ if (nsim_dev_port_index_internal(nsim_dev, dl_port->index)) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Port index doesn't belong to user created port");
+ return ERR_PTR(-EOPNOTSUPP);
+ }
+ return container_of(dl_port, struct nsim_port_fn, dl_port);
+}
+
+int nsim_dev_port_fn_hw_addr_get(struct devlink *devlink,
+ struct devlink_port *dl_port,
+ 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;
+
+ port = nsim_dev_to_port_fn(nsim_dev, dl_port, extack);
+ if (IS_ERR(port))
+ return PTR_ERR(port);
+
+ memcpy(hw_addr, port->hw_addr, ETH_ALEN);
+ *hw_addr_len = ETH_ALEN;
+ return 0;
+}
Allow users to get hardware address for the PCI port. Below example creates one devlink port, queries a port and its 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 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 00:00:00:00:00:00 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": "00:00:00:00:00:00" } } } } Signed-off-by: Parav Pandit <parav@nvidia.com> --- drivers/net/netdevsim/dev.c | 1 + drivers/net/netdevsim/netdevsim.h | 4 ++++ drivers/net/netdevsim/port_function.c | 30 +++++++++++++++++++++++++++ 3 files changed, 35 insertions(+)