| Message ID | 20230710073703.147351-4-fujita.tomonori@gmail.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | Rust abstractions for network device drivers | expand |
| Context | Check | Description |
|---|---|---|
| netdev/tree_selection | success | Not a local patch, async |
> adds methods to net::Device for the basic configurations of > net_device. > > Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com> > --- > rust/helpers.c | 7 ++ > rust/kernel/net/dev.rs | 185 ++++++++++++++++++++++++++++++++++++++++- > 2 files changed, 191 insertions(+), 1 deletion(-) > > diff --git a/rust/helpers.c b/rust/helpers.c > index 70d50767ff4e..6c51deb18dc1 100644 > --- a/rust/helpers.c > +++ b/rust/helpers.c > @@ -22,6 +22,7 @@ > #include <linux/build_bug.h> > #include <linux/err.h> > #include <linux/errname.h> > +#include <linux/etherdevice.h> > #include <linux/refcount.h> > #include <linux/mutex.h> > #include <linux/netdevice.h> > @@ -31,6 +32,12 @@ > #include <linux/wait.h> > > #ifdef CONFIG_NET > +void rust_helper_eth_hw_addr_random(struct net_device *dev) > +{ > + eth_hw_addr_random(dev); > +} > +EXPORT_SYMBOL_GPL(rust_helper_eth_hw_addr_random); > + > void *rust_helper_netdev_priv(const struct net_device *dev) > { > return netdev_priv(dev); > diff --git a/rust/kernel/net/dev.rs b/rust/kernel/net/dev.rs > index ff00616e4fef..e4d8d8260c10 100644 > --- a/rust/kernel/net/dev.rs > +++ b/rust/kernel/net/dev.rs > @@ -8,9 +8,116 @@ > //! [`include/linux/skbuff.h`](../../../../include/linux/skbuff.h), > //! [`include/uapi/linux/if_link.h`](../../../../include/uapi/linux/if_link.h). > > -use crate::{bindings, build_error, error::*, prelude::vtable, types::ForeignOwnable}; > +use crate::{bindings, build_error, error::*, prelude::vtable, str::CStr, types::ForeignOwnable}; > use {core::ffi::c_void, core::marker::PhantomData}; > > +/// Flags associated with a [`Device`]. > +pub mod flags { > + /// Interface is up. > + pub const IFF_UP: u32 = bindings::net_device_flags_IFF_UP; > + /// Broadcast address valid. > + pub const IFF_BROADCAST: u32 = bindings::net_device_flags_IFF_BROADCAST; > + /// Device on debugging. > + pub const IFF_DEBUG: u32 = bindings::net_device_flags_IFF_DEBUG; > + /// Loopback device. > + pub const IFF_LOOPBACK: u32 = bindings::net_device_flags_IFF_LOOPBACK; > + /// Has p-p link. > + pub const IFF_POINTOPOINT: u32 = bindings::net_device_flags_IFF_POINTOPOINT; > + /// Avoids use of trailers. > + pub const IFF_NOTRAILERS: u32 = bindings::net_device_flags_IFF_NOTRAILERS; > + /// Interface RFC2863 OPER_UP. > + pub const IFF_RUNNING: u32 = bindings::net_device_flags_IFF_RUNNING; > + /// No ARP protocol. > + pub const IFF_NOARP: u32 = bindings::net_device_flags_IFF_NOARP; > + /// Receives all packets. > + pub const IFF_PROMISC: u32 = bindings::net_device_flags_IFF_PROMISC; > + /// Receive all multicast packets. > + pub const IFF_ALLMULTI: u32 = bindings::net_device_flags_IFF_ALLMULTI; > + /// Master of a load balancer. > + pub const IFF_MASTER: u32 = bindings::net_device_flags_IFF_MASTER; > + /// Slave of a load balancer. > + pub const IFF_SLAVE: u32 = bindings::net_device_flags_IFF_SLAVE; > + /// Supports multicast. > + pub const IFF_MULTICAST: u32 = bindings::net_device_flags_IFF_MULTICAST; > + /// Capable of setting media type. > + pub const IFF_PORTSEL: u32 = bindings::net_device_flags_IFF_PORTSEL; > + /// Auto media select active. > + pub const IFF_AUTOMEDIA: u32 = bindings::net_device_flags_IFF_AUTOMEDIA; > + /// Dialup device with changing addresses. > + pub const IFF_DYNAMIC: u32 = bindings::net_device_flags_IFF_DYNAMIC; > +} > + > +/// Private flags associated with a [`Device`]. > +pub mod priv_flags { > + /// 802.1Q VLAN device. > + pub const IFF_802_1Q_VLAN: u64 = bindings::netdev_priv_flags_IFF_802_1Q_VLAN; > + /// Ethernet bridging device. > + pub const IFF_EBRIDGE: u64 = bindings::netdev_priv_flags_IFF_EBRIDGE; > + /// Bonding master or slave device. > + pub const IFF_BONDING: u64 = bindings::netdev_priv_flags_IFF_BONDING; > + /// ISATAP interface (RFC4214). > + pub const IFF_ISATAP: u64 = bindings::netdev_priv_flags_IFF_ISATAP; > + /// WAN HDLC device. > + pub const IFF_WAN_HDLC: u64 = bindings::netdev_priv_flags_IFF_WAN_HDLC; > + /// dev_hard_start_xmit() is allowed to release skb->dst. > + pub const IFF_XMIT_DST_RELEASE: u64 = bindings::netdev_priv_flags_IFF_XMIT_DST_RELEASE; > + /// Disallows bridging this ether device. > + pub const IFF_DONT_BRIDGE: u64 = bindings::netdev_priv_flags_IFF_DONT_BRIDGE; > + /// Disables netpoll at run-time. > + pub const IFF_DISABLE_NETPOLL: u64 = bindings::netdev_priv_flags_IFF_DISABLE_NETPOLL; > + /// Device used as macvlan port. > + pub const IFF_MACVLAN_PORT: u64 = bindings::netdev_priv_flags_IFF_MACVLAN_PORT; > + /// Device used as bridge port. > + pub const IFF_BRIDGE_PORT: u64 = bindings::netdev_priv_flags_IFF_BRIDGE_PORT; > + /// Device used as Open vSwitch datapath port. > + pub const IFF_OVS_DATAPATH: u64 = bindings::netdev_priv_flags_IFF_OVS_DATAPATH; > + /// The interface supports sharing skbs on transmit. > + pub const IFF_TX_SKB_SHARING: u64 = bindings::netdev_priv_flags_IFF_TX_SKB_SHARING; > + /// Supports unicast filtering. > + pub const IFF_UNICAST_FLT: u64 = bindings::netdev_priv_flags_IFF_UNICAST_FLT; > + /// Device used as team port. > + pub const IFF_TEAM_PORT: u64 = bindings::netdev_priv_flags_IFF_TEAM_PORT; > + /// Device supports sending custom FCS. > + pub const IFF_SUPP_NOFCS: u64 = bindings::netdev_priv_flags_IFF_SUPP_NOFCS; > + /// Device supports hardware address change when it's running. > + pub const IFF_LIVE_ADDR_CHANGE: u64 = bindings::netdev_priv_flags_IFF_LIVE_ADDR_CHANGE; > + /// Macvlan device. > + pub const IFF_MACVLAN: u64 = bindings::netdev_priv_flags_IFF_MACVLAN; > + /// IFF_XMIT_DST_RELEASE not taking into account underlying stacked devices. > + pub const IFF_XMIT_DST_RELEASE_PERM: u64 = > + bindings::netdev_priv_flags_IFF_XMIT_DST_RELEASE_PERM; > + /// L3 master device. > + pub const IFF_L3MDEV_MASTER: u64 = bindings::netdev_priv_flags_IFF_L3MDEV_MASTER; > + /// Device can run without qdisc attached. > + pub const IFF_NO_QUEUE: u64 = bindings::netdev_priv_flags_IFF_NO_QUEUE; > + /// Device is a Open vSwitch master. > + pub const IFF_OPENVSWITCH: u64 = bindings::netdev_priv_flags_IFF_OPENVSWITCH; > + /// Device is enslaved to an L3 master. > + pub const IFF_L3MDEV_SLAVE: u64 = bindings::netdev_priv_flags_IFF_L3MDEV_SLAVE; > + /// Team device. > + pub const IFF_TEAM: u64 = bindings::netdev_priv_flags_IFF_TEAM; > + /// Device has had Rx Flow indirection table configured. > + pub const IFF_RXFH_CONFIGURED: u64 = bindings::netdev_priv_flags_IFF_RXFH_CONFIGURED; > + /// The headroom value is controlled by an external entity. > + pub const IFF_PHONY_HEADROOM: u64 = bindings::netdev_priv_flags_IFF_PHONY_HEADROOM; > + /// MACsec device. > + pub const IFF_MACSEC: u64 = bindings::netdev_priv_flags_IFF_MACSEC; > + /// Device doesn't support the rx_handler hook. > + pub const IFF_NO_RX_HANDLER: u64 = bindings::netdev_priv_flags_IFF_NO_RX_HANDLER; > + /// Failover master device. > + pub const IFF_FAILOVER: u64 = bindings::netdev_priv_flags_IFF_FAILOVER; > + /// Lower device of a failover master device. > + pub const IFF_FAILOVER_SLAVE: u64 = bindings::netdev_priv_flags_IFF_FAILOVER_SLAVE; > + /// Only invokes the rx handler of L3 master device. > + pub const IFF_L3MDEV_RX_HANDLER: u64 = bindings::netdev_priv_flags_IFF_L3MDEV_RX_HANDLER; > + /// Prevents ipv6 addrconf. > + pub const IFF_NO_ADDRCONF: u64 = bindings::netdev_priv_flags_IFF_NO_ADDRCONF; > + /// Capable of xmitting frames with skb_headlen(skb) == 0. > + pub const IFF_TX_SKB_NO_LINEAR: u64 = bindings::netdev_priv_flags_IFF_TX_SKB_NO_LINEAR; > + /// Supports setting carrier via IFLA_PROTO_DOWN. > + pub const IFF_CHANGE_PROTO_DOWN: u64 = bindings::netdev_priv_flags_IFF_CHANGE_PROTO_DOWN; > +} > + > /// Corresponds to the kernel's `struct net_device`. > /// > /// # Invariants > @@ -49,6 +156,82 @@ pub fn drv_priv_data(&self) -> D::Borrowed<'_> { > )) > } > } > + > + /// Sets the name of a device. > + pub fn set_name(&mut self, name: &CStr) -> Result { > + // SAFETY: The type invariants guarantee that `self.ptr` is valid. > + unsafe { > + if name.len() > (*self.ptr).name.len() { > + return Err(code::EINVAL); > + } > + (*self.ptr) > + .name > + .as_mut_ptr() > + .copy_from_nonoverlapping(name.as_char_ptr(), name.len()); > + } Just to make sure, the `name` field in `net_device` does not need to be nul-terminated, right? -- Cheers, Benno > + Ok(()) > + } > + > + /// Sets carrier. > + pub fn netif_carrier_on(&mut self) { > + // SAFETY: The type invariants guarantee that `self.ptr` is valid. > + unsafe { bindings::netif_carrier_on(self.ptr) } > + } > + > + /// Clears carrier. > + pub fn netif_carrier_off(&mut self) { > + // SAFETY: The type invariants guarantee that `self.ptr` is valid. > + unsafe { bindings::netif_carrier_off(self.ptr) } > + } > + > + /// Sets the max mtu of the device. > + pub fn set_max_mtu(&mut self, max_mtu: u32) { > + // SAFETY: The type invariants guarantee that `self.ptr` is valid. > + unsafe { > + (*self.ptr).max_mtu = max_mtu; > + } > + } > + > + /// Sets the minimum mtu of the device. > + pub fn set_min_mtu(&mut self, min_mtu: u32) { > + // SAFETY: The type invariants guarantee that `self.ptr` is valid. > + unsafe { > + (*self.ptr).min_mtu = min_mtu; > + } > + } > + > + /// Returns the flags of the device. > + pub fn get_flags(&self) -> u32 { > + // SAFETY: The type invariants guarantee that `self.ptr` is valid. > + unsafe { (*self.ptr).flags } > + } > + > + /// Sets the flags of the device. > + pub fn set_flags(&mut self, flags: u32) { > + // SAFETY: The type invariants guarantee that `self.ptr` is valid. > + unsafe { > + (*self.ptr).flags = flags; > + } > + } > + > + /// Returns the priv_flags of the device. > + pub fn get_priv_flags(&self) -> u64 { > + // SAFETY: The type invariants guarantee that `self.ptr` is valid. > + unsafe { (*self.ptr).priv_flags } > + } > + > + /// Sets the priv_flags of the device. > + pub fn set_priv_flags(&mut self, flags: u64) { > + // SAFETY: The type invariants guarantee that `self.ptr` is valid. > + unsafe { (*self.ptr).priv_flags = flags } > + } > + > + /// Generate a random Ethernet address (MAC) to be used by a net device > + /// and set addr_assign_type. > + pub fn set_random_eth_hw_addr(&mut self) { > + // SAFETY: The type invariants guarantee that `self.ptr` is valid. > + unsafe { bindings::eth_hw_addr_random(self.ptr) } > + } > } > > // SAFETY: `Device` is just a wrapper for the kernel`s `struct net_device`, which can be used > -- > 2.34.1 >
diff --git a/rust/helpers.c b/rust/helpers.c index 70d50767ff4e..6c51deb18dc1 100644 --- a/rust/helpers.c +++ b/rust/helpers.c @@ -22,6 +22,7 @@ #include <linux/build_bug.h> #include <linux/err.h> #include <linux/errname.h> +#include <linux/etherdevice.h> #include <linux/refcount.h> #include <linux/mutex.h> #include <linux/netdevice.h> @@ -31,6 +32,12 @@ #include <linux/wait.h> #ifdef CONFIG_NET +void rust_helper_eth_hw_addr_random(struct net_device *dev) +{ + eth_hw_addr_random(dev); +} +EXPORT_SYMBOL_GPL(rust_helper_eth_hw_addr_random); + void *rust_helper_netdev_priv(const struct net_device *dev) { return netdev_priv(dev); diff --git a/rust/kernel/net/dev.rs b/rust/kernel/net/dev.rs index ff00616e4fef..e4d8d8260c10 100644 --- a/rust/kernel/net/dev.rs +++ b/rust/kernel/net/dev.rs @@ -8,9 +8,116 @@ //! [`include/linux/skbuff.h`](../../../../include/linux/skbuff.h), //! [`include/uapi/linux/if_link.h`](../../../../include/uapi/linux/if_link.h). -use crate::{bindings, build_error, error::*, prelude::vtable, types::ForeignOwnable}; +use crate::{bindings, build_error, error::*, prelude::vtable, str::CStr, types::ForeignOwnable}; use {core::ffi::c_void, core::marker::PhantomData}; +/// Flags associated with a [`Device`]. +pub mod flags { + /// Interface is up. + pub const IFF_UP: u32 = bindings::net_device_flags_IFF_UP; + /// Broadcast address valid. + pub const IFF_BROADCAST: u32 = bindings::net_device_flags_IFF_BROADCAST; + /// Device on debugging. + pub const IFF_DEBUG: u32 = bindings::net_device_flags_IFF_DEBUG; + /// Loopback device. + pub const IFF_LOOPBACK: u32 = bindings::net_device_flags_IFF_LOOPBACK; + /// Has p-p link. + pub const IFF_POINTOPOINT: u32 = bindings::net_device_flags_IFF_POINTOPOINT; + /// Avoids use of trailers. + pub const IFF_NOTRAILERS: u32 = bindings::net_device_flags_IFF_NOTRAILERS; + /// Interface RFC2863 OPER_UP. + pub const IFF_RUNNING: u32 = bindings::net_device_flags_IFF_RUNNING; + /// No ARP protocol. + pub const IFF_NOARP: u32 = bindings::net_device_flags_IFF_NOARP; + /// Receives all packets. + pub const IFF_PROMISC: u32 = bindings::net_device_flags_IFF_PROMISC; + /// Receive all multicast packets. + pub const IFF_ALLMULTI: u32 = bindings::net_device_flags_IFF_ALLMULTI; + /// Master of a load balancer. + pub const IFF_MASTER: u32 = bindings::net_device_flags_IFF_MASTER; + /// Slave of a load balancer. + pub const IFF_SLAVE: u32 = bindings::net_device_flags_IFF_SLAVE; + /// Supports multicast. + pub const IFF_MULTICAST: u32 = bindings::net_device_flags_IFF_MULTICAST; + /// Capable of setting media type. + pub const IFF_PORTSEL: u32 = bindings::net_device_flags_IFF_PORTSEL; + /// Auto media select active. + pub const IFF_AUTOMEDIA: u32 = bindings::net_device_flags_IFF_AUTOMEDIA; + /// Dialup device with changing addresses. + pub const IFF_DYNAMIC: u32 = bindings::net_device_flags_IFF_DYNAMIC; +} + +/// Private flags associated with a [`Device`]. +pub mod priv_flags { + /// 802.1Q VLAN device. + pub const IFF_802_1Q_VLAN: u64 = bindings::netdev_priv_flags_IFF_802_1Q_VLAN; + /// Ethernet bridging device. + pub const IFF_EBRIDGE: u64 = bindings::netdev_priv_flags_IFF_EBRIDGE; + /// Bonding master or slave device. + pub const IFF_BONDING: u64 = bindings::netdev_priv_flags_IFF_BONDING; + /// ISATAP interface (RFC4214). + pub const IFF_ISATAP: u64 = bindings::netdev_priv_flags_IFF_ISATAP; + /// WAN HDLC device. + pub const IFF_WAN_HDLC: u64 = bindings::netdev_priv_flags_IFF_WAN_HDLC; + /// dev_hard_start_xmit() is allowed to release skb->dst. + pub const IFF_XMIT_DST_RELEASE: u64 = bindings::netdev_priv_flags_IFF_XMIT_DST_RELEASE; + /// Disallows bridging this ether device. + pub const IFF_DONT_BRIDGE: u64 = bindings::netdev_priv_flags_IFF_DONT_BRIDGE; + /// Disables netpoll at run-time. + pub const IFF_DISABLE_NETPOLL: u64 = bindings::netdev_priv_flags_IFF_DISABLE_NETPOLL; + /// Device used as macvlan port. + pub const IFF_MACVLAN_PORT: u64 = bindings::netdev_priv_flags_IFF_MACVLAN_PORT; + /// Device used as bridge port. + pub const IFF_BRIDGE_PORT: u64 = bindings::netdev_priv_flags_IFF_BRIDGE_PORT; + /// Device used as Open vSwitch datapath port. + pub const IFF_OVS_DATAPATH: u64 = bindings::netdev_priv_flags_IFF_OVS_DATAPATH; + /// The interface supports sharing skbs on transmit. + pub const IFF_TX_SKB_SHARING: u64 = bindings::netdev_priv_flags_IFF_TX_SKB_SHARING; + /// Supports unicast filtering. + pub const IFF_UNICAST_FLT: u64 = bindings::netdev_priv_flags_IFF_UNICAST_FLT; + /// Device used as team port. + pub const IFF_TEAM_PORT: u64 = bindings::netdev_priv_flags_IFF_TEAM_PORT; + /// Device supports sending custom FCS. + pub const IFF_SUPP_NOFCS: u64 = bindings::netdev_priv_flags_IFF_SUPP_NOFCS; + /// Device supports hardware address change when it's running. + pub const IFF_LIVE_ADDR_CHANGE: u64 = bindings::netdev_priv_flags_IFF_LIVE_ADDR_CHANGE; + /// Macvlan device. + pub const IFF_MACVLAN: u64 = bindings::netdev_priv_flags_IFF_MACVLAN; + /// IFF_XMIT_DST_RELEASE not taking into account underlying stacked devices. + pub const IFF_XMIT_DST_RELEASE_PERM: u64 = + bindings::netdev_priv_flags_IFF_XMIT_DST_RELEASE_PERM; + /// L3 master device. + pub const IFF_L3MDEV_MASTER: u64 = bindings::netdev_priv_flags_IFF_L3MDEV_MASTER; + /// Device can run without qdisc attached. + pub const IFF_NO_QUEUE: u64 = bindings::netdev_priv_flags_IFF_NO_QUEUE; + /// Device is a Open vSwitch master. + pub const IFF_OPENVSWITCH: u64 = bindings::netdev_priv_flags_IFF_OPENVSWITCH; + /// Device is enslaved to an L3 master. + pub const IFF_L3MDEV_SLAVE: u64 = bindings::netdev_priv_flags_IFF_L3MDEV_SLAVE; + /// Team device. + pub const IFF_TEAM: u64 = bindings::netdev_priv_flags_IFF_TEAM; + /// Device has had Rx Flow indirection table configured. + pub const IFF_RXFH_CONFIGURED: u64 = bindings::netdev_priv_flags_IFF_RXFH_CONFIGURED; + /// The headroom value is controlled by an external entity. + pub const IFF_PHONY_HEADROOM: u64 = bindings::netdev_priv_flags_IFF_PHONY_HEADROOM; + /// MACsec device. + pub const IFF_MACSEC: u64 = bindings::netdev_priv_flags_IFF_MACSEC; + /// Device doesn't support the rx_handler hook. + pub const IFF_NO_RX_HANDLER: u64 = bindings::netdev_priv_flags_IFF_NO_RX_HANDLER; + /// Failover master device. + pub const IFF_FAILOVER: u64 = bindings::netdev_priv_flags_IFF_FAILOVER; + /// Lower device of a failover master device. + pub const IFF_FAILOVER_SLAVE: u64 = bindings::netdev_priv_flags_IFF_FAILOVER_SLAVE; + /// Only invokes the rx handler of L3 master device. + pub const IFF_L3MDEV_RX_HANDLER: u64 = bindings::netdev_priv_flags_IFF_L3MDEV_RX_HANDLER; + /// Prevents ipv6 addrconf. + pub const IFF_NO_ADDRCONF: u64 = bindings::netdev_priv_flags_IFF_NO_ADDRCONF; + /// Capable of xmitting frames with skb_headlen(skb) == 0. + pub const IFF_TX_SKB_NO_LINEAR: u64 = bindings::netdev_priv_flags_IFF_TX_SKB_NO_LINEAR; + /// Supports setting carrier via IFLA_PROTO_DOWN. + pub const IFF_CHANGE_PROTO_DOWN: u64 = bindings::netdev_priv_flags_IFF_CHANGE_PROTO_DOWN; +} + /// Corresponds to the kernel's `struct net_device`. /// /// # Invariants @@ -49,6 +156,82 @@ pub fn drv_priv_data(&self) -> D::Borrowed<'_> { )) } } + + /// Sets the name of a device. + pub fn set_name(&mut self, name: &CStr) -> Result { + // SAFETY: The type invariants guarantee that `self.ptr` is valid. + unsafe { + if name.len() > (*self.ptr).name.len() { + return Err(code::EINVAL); + } + (*self.ptr) + .name + .as_mut_ptr() + .copy_from_nonoverlapping(name.as_char_ptr(), name.len()); + } + Ok(()) + } + + /// Sets carrier. + pub fn netif_carrier_on(&mut self) { + // SAFETY: The type invariants guarantee that `self.ptr` is valid. + unsafe { bindings::netif_carrier_on(self.ptr) } + } + + /// Clears carrier. + pub fn netif_carrier_off(&mut self) { + // SAFETY: The type invariants guarantee that `self.ptr` is valid. + unsafe { bindings::netif_carrier_off(self.ptr) } + } + + /// Sets the max mtu of the device. + pub fn set_max_mtu(&mut self, max_mtu: u32) { + // SAFETY: The type invariants guarantee that `self.ptr` is valid. + unsafe { + (*self.ptr).max_mtu = max_mtu; + } + } + + /// Sets the minimum mtu of the device. + pub fn set_min_mtu(&mut self, min_mtu: u32) { + // SAFETY: The type invariants guarantee that `self.ptr` is valid. + unsafe { + (*self.ptr).min_mtu = min_mtu; + } + } + + /// Returns the flags of the device. + pub fn get_flags(&self) -> u32 { + // SAFETY: The type invariants guarantee that `self.ptr` is valid. + unsafe { (*self.ptr).flags } + } + + /// Sets the flags of the device. + pub fn set_flags(&mut self, flags: u32) { + // SAFETY: The type invariants guarantee that `self.ptr` is valid. + unsafe { + (*self.ptr).flags = flags; + } + } + + /// Returns the priv_flags of the device. + pub fn get_priv_flags(&self) -> u64 { + // SAFETY: The type invariants guarantee that `self.ptr` is valid. + unsafe { (*self.ptr).priv_flags } + } + + /// Sets the priv_flags of the device. + pub fn set_priv_flags(&mut self, flags: u64) { + // SAFETY: The type invariants guarantee that `self.ptr` is valid. + unsafe { (*self.ptr).priv_flags = flags } + } + + /// Generate a random Ethernet address (MAC) to be used by a net device + /// and set addr_assign_type. + pub fn set_random_eth_hw_addr(&mut self) { + // SAFETY: The type invariants guarantee that `self.ptr` is valid. + unsafe { bindings::eth_hw_addr_random(self.ptr) } + } } // SAFETY: `Device` is just a wrapper for the kernel`s `struct net_device`, which can be used
adds methods to net::Device for the basic configurations of net_device. Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com> --- rust/helpers.c | 7 ++ rust/kernel/net/dev.rs | 185 ++++++++++++++++++++++++++++++++++++++++- 2 files changed, 191 insertions(+), 1 deletion(-)