Simulate port function state of a PCI port.
This enables users to get the state of the PCI port function.
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 port:
$ devlink port show netdevsim/netdevsim10/2
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 state inactive opstate detached
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",
"state": "inactive",
"opstate": "detached"
}
}
}
}
Signed-off-by: Parav Pandit <pa...@nvidia.com>
---
drivers/net/netdevsim/dev.c | 1 +
drivers/net/netdevsim/netdevsim.h | 5 +++++
drivers/net/netdevsim/port_function.c | 22 ++++++++++++++++++++++
3 files changed, 28 insertions(+)
diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c
index ab15b5f7e955..9f2164ea89cd 100644
--- a/drivers/net/netdevsim/dev.c
+++ b/drivers/net/netdevsim/dev.c
@@ -909,6 +909,7 @@ static const struct devlink_ops nsim_dev_devlink_ops = {
.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,
+ .port_fn_state_get = nsim_dev_port_fn_state_get,
};
#define NSIM_DEV_MAX_MACS_DEFAULT 32
diff --git a/drivers/net/netdevsim/netdevsim.h
b/drivers/net/netdevsim/netdevsim.h
index aafe2027a112..c0544d93e1e8 100644
--- a/drivers/net/netdevsim/netdevsim.h
+++ b/drivers/net/netdevsim/netdevsim.h
@@ -328,3 +328,8 @@ 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);
+int nsim_dev_port_fn_state_get(struct devlink *devlink,
+ struct devlink_port *port,
+ enum devlink_port_fn_state *state,
+ enum devlink_port_fn_opstate *opstate,
+ struct netlink_ext_ack *extack);
diff --git a/drivers/net/netdevsim/port_function.c
b/drivers/net/netdevsim/port_function.c
index d47cdf44770a..10c692b8aea2 100644
--- a/drivers/net/netdevsim/port_function.c
+++ b/drivers/net/netdevsim/port_function.c
@@ -17,6 +17,7 @@ struct nsim_port_fn {
u32 sfnum;
u16 pfnum;
u8 hw_addr[ETH_ALEN];
+ u8 state; /* enum devlink_port_fn_state */
};
static struct devlink_port *
@@ -248,6 +249,7 @@ static int nsim_devlink_port_fn_add(struct devlink *devlink,
goto pf_err;
}
+ port->state = DEVLINK_PORT_FN_STATE_INACTIVE;
err = devlink_port_register(devlink, &port->dl_port, port->port_index);
if (err)
goto reg_err;
@@ -482,3 +484,23 @@ int nsim_dev_port_fn_hw_addr_set(struct devlink *devlink,
memcpy(port->hw_addr, hw_addr, ETH_ALEN);
return 0;
}
+
+int nsim_dev_port_fn_state_get(struct devlink *devlink,
+ struct devlink_port *dl_port,
+ enum devlink_port_fn_state *state,
+ enum devlink_port_fn_opstate *opstate,
+ 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);
+ *state = port->state;
+ if (port->state == DEVLINK_PORT_FN_STATE_INACTIVE)
+ *opstate = DEVLINK_PORT_FN_OPSTATE_DETACHED;
+ else
+ *opstate = DEVLINK_PORT_FN_OPSTATE_ATTACHED;
+ return 0;
+}
--
2.26.2
