diff options
| author | Dmytro Linkin <dlinkin@nvidia.com> | 2021-06-02 15:17:14 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-06-02 14:08:36 -0700 |
| commit | d395381909a32060927e3f90116f938379be0636 (patch) | |
| tree | 693d5f1bd08df85caa8d90614c3857579a7b6345 /drivers/net/netdevsim/netdevsim.h | |
| parent | 53c7bb553056d3a6713ea413576c6d1b0c3f0f61 (diff) | |
| download | linux-d395381909a32060927e3f90116f938379be0636.tar.gz | |
netdevsim: Add max_vfs to bus_dev
Currently there is no limit to the number of VFs netdevsim can enable.
In a real systems this value exist and used by the driver.
Fore example, some features might need to consider this value when
allocating memory.
Expose max_vfs variable to debugfs as configurable resource. If are VFs
configured (num_vfs != 0) then changing of max_vfs not allowed.
Co-developed-by: Yuval Avnery <yuvalav@nvidia.com>
Signed-off-by: Yuval Avnery <yuvalav@nvidia.com>
Signed-off-by: Dmytro Linkin <dlinkin@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/netdevsim/netdevsim.h')
| -rw-r--r-- | drivers/net/netdevsim/netdevsim.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h index 7ff24e03577b..12f56f2f85e8 100644 --- a/drivers/net/netdevsim/netdevsim.h +++ b/drivers/net/netdevsim/netdevsim.h @@ -212,6 +212,7 @@ struct nsim_dev { struct dentry *ddir; struct dentry *ports_ddir; struct dentry *take_snapshot; + struct dentry *max_vfs; struct bpf_offload_dev *bpf_dev; bool bpf_bind_accept; bool bpf_bind_verifier_accept; @@ -269,6 +270,13 @@ void nsim_fib_destroy(struct devlink *devlink, struct nsim_fib_data *fib_data); u64 nsim_fib_get_val(struct nsim_fib_data *fib_data, enum nsim_resource_id res_id, bool max); +ssize_t nsim_bus_dev_max_vfs_read(struct file *file, + char __user *data, + size_t count, loff_t *ppos); +ssize_t nsim_bus_dev_max_vfs_write(struct file *file, + const char __user *data, + size_t count, loff_t *ppos); + #if IS_ENABLED(CONFIG_XFRM_OFFLOAD) void nsim_ipsec_init(struct netdevsim *ns); void nsim_ipsec_teardown(struct netdevsim *ns); @@ -308,7 +316,9 @@ struct nsim_bus_dev { struct net *initial_net; /* Purpose of this is to carry net pointer * during the probe time only. */ + unsigned int max_vfs; unsigned int num_vfs; + struct mutex vfs_lock; /* Protects vfconfigs */ struct nsim_vf_config *vfconfigs; /* Lock for devlink->reload_enabled in netdevsim module */ struct mutex nsim_bus_reload_lock; |