net: kernel-doc compliant documentation for net_device
Net_device is a vast and important structure, but it has no kernel-doc compliant documentation. This patch extracts the comments from the structure to clean it up, and let the scripts extract documentation from it. I know that the patch is big, but it's just reordering of comments into the appropriate form, and adding a few more, for the missing members. Signed-off-by: Karoly Kemeny <karoly.kemeny@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net>hifive-unleashed-5.1
Karoly Kemeny
David S. Miller
parent
8e97b85a8f
commit
536721b1cb
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@ -1231,42 +1231,228 @@ enum netdev_priv_flags {
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#define IFF_LIVE_ADDR_CHANGE IFF_LIVE_ADDR_CHANGE
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#define IFF_MACVLAN IFF_MACVLAN
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/*
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* The DEVICE structure.
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* Actually, this whole structure is a big mistake. It mixes I/O
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* data with strictly "high-level" data, and it has to know about
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* almost every data structure used in the INET module.
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/**
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* struct net_device - The DEVICE structure.
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* Actually, this whole structure is a big mistake. It mixes I/O
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* data with strictly "high-level" data, and it has to know about
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* almost every data structure used in the INET module.
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*
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* @name: This is the first field of the "visible" part of this structure
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* (i.e. as seen by users in the "Space.c" file). It is the name
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* of the interface.
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*
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* @name_hlist: Device name hash chain, please keep it close to name[]
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* @ifalias: SNMP alias
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* @mem_end: Shared memory end
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* @mem_start: Shared memory start
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* @base_addr: Device I/O address
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* @irq: Device IRQ number
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*
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* @state: Generic network queuing layer state, see netdev_state_t
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* @dev_list: The global list of network devices
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* @napi_list: List entry, that is used for polling napi devices
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* @unreg_list: List entry, that is used, when we are unregistering the
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* device, see the function unregister_netdev
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* @close_list: List entry, that is used, when we are closing the device
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*
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* @adj_list: Directly linked devices, like slaves for bonding
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* @all_adj_list: All linked devices, *including* neighbours
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* @features: Currently active device features
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* @hw_features: User-changeable features
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*
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* @wanted_features: User-requested features
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* @vlan_features: Mask of features inheritable by VLAN devices
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*
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* @hw_enc_features: Mask of features inherited by encapsulating devices
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* This field indicates what encapsulation
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* offloads the hardware is capable of doing,
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* and drivers will need to set them appropriately.
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*
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* @mpls_features: Mask of features inheritable by MPLS
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*
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* @ifindex: interface index
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* @iflink: unique device identifier
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*
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* @stats: Statistics struct, which was left as a legacy, use
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* rtnl_link_stats64 instead
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*
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* @rx_dropped: Dropped packets by core network,
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* do not use this in drivers
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* @tx_dropped: Dropped packets by core network,
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* do not use this in drivers
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*
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* @carrier_changes: Stats to monitor carrier on<->off transitions
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*
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* @wireless_handlers: List of functions to handle Wireless Extensions,
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* instead of ioctl,
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* see <net/iw_handler.h> for details.
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* @wireless_data: Instance data managed by the core of wireless extensions
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*
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* @netdev_ops: Includes several pointers to callbacks,
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* if one wants to override the ndo_*() functions
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* @ethtool_ops: Management operations
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* @fwd_ops: Management operations
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* @header_ops: Includes callbacks for creating,parsing,rebuilding,etc
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* of Layer 2 headers.
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*
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* @flags: Interface flags (a la BSD)
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* @priv_flags: Like 'flags' but invisible to userspace,
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* see if.h for the definitions
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* @gflags: Global flags ( kept as legacy )
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* @padded: How much padding added by alloc_netdev()
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* @operstate: RFC2863 operstate
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* @link_mode: Mapping policy to operstate
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* @if_port: Selectable AUI, TP, ...
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* @dma: DMA channel
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* @mtu: Interface MTU value
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* @type: Interface hardware type
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* @hard_header_len: Hardware header length
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*
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* @needed_headroom: Extra headroom the hardware may need, but not in all
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* cases can this be guaranteed
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* @needed_tailroom: Extra tailroom the hardware may need, but not in all
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* cases can this be guaranteed. Some cases also use
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* LL_MAX_HEADER instead to allocate the skb
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*
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* interface address info:
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*
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* @perm_addr: Permanent hw address
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* @addr_assign_type: Hw address assignment type
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* @addr_len: Hardware address length
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* @neigh_priv_len; Used in neigh_alloc(),
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* initialized only in atm/clip.c
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* @dev_id: Used to differentiate devices that share
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* the same link layer address
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* @dev_port: Used to differentiate devices that share
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* the same function
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* @addr_list_lock: XXX: need comments on this one
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* @uc: unicast mac addresses
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* @mc: multicast mac addresses
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* @dev_addrs: list of device hw addresses
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* @queues_kset: Group of all Kobjects in the Tx and RX queues
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* @uc_promisc: Counter, that indicates, that promiscuous mode
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* has been enabled due to the need to listen to
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* additional unicast addresses in a device that
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* does not implement ndo_set_rx_mode()
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* @promiscuity: Number of times, the NIC is told to work in
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* Promiscuous mode, if it becomes 0 the NIC will
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* exit from working in Promiscuous mode
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* @allmulti: Counter, enables or disables allmulticast mode
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*
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* @vlan_info: VLAN info
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* @dsa_ptr: dsa specific data
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* @tipc_ptr: TIPC specific data
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* @atalk_ptr: AppleTalk link
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* @ip_ptr: IPv4 specific data
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* @dn_ptr: DECnet specific data
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* @ip6_ptr: IPv6 specific data
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* @ax25_ptr: AX.25 specific data
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* @ieee80211_ptr: IEEE 802.11 specific data, assign before registering
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*
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* @last_rx: Time of last Rx
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* @dev_addr: Hw address (before bcast,
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* because most packets are unicast)
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*
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* @_rx: Array of RX queues
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* @num_rx_queues: Number of RX queues
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* allocated at register_netdev() time
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* @real_num_rx_queues: Number of RX queues currently active in device
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*
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* @rx_handler: handler for received packets
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* @rx_handler_data: XXX: need comments on this one
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* @ingress_queue: XXX: need comments on this one
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* @broadcast: hw bcast address
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*
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* @_tx: Array of TX queues
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* @num_tx_queues: Number of TX queues allocated at alloc_netdev_mq() time
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* @real_num_tx_queues: Number of TX queues currently active in device
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* @qdisc: Root qdisc from userspace point of view
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* @tx_queue_len: Max frames per queue allowed
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* @tx_global_lock: XXX: need comments on this one
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*
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* @xps_maps: XXX: need comments on this one
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*
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* @rx_cpu_rmap: CPU reverse-mapping for RX completion interrupts,
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* indexed by RX queue number. Assigned by driver.
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* This must only be set if the ndo_rx_flow_steer
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* operation is defined
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*
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* @trans_start: Time (in jiffies) of last Tx
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* @watchdog_timeo: Represents the timeout that is used by
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* the watchdog ( see dev_watchdog() )
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* @watchdog_timer: List of timers
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*
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* @pcpu_refcnt: Number of references to this device
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* @todo_list: Delayed register/unregister
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* @index_hlist: Device index hash chain
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* @link_watch_list: XXX: need comments on this one
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*
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* @reg_state: Register/unregister state machine
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* @dismantle: Device is going to be freed
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* @rtnl_link_state: This enum represents the phases of creating
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* a new link
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*
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* @destructor: Called from unregister,
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* can be used to call free_netdev
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* @npinfo: XXX: need comments on this one
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* @nd_net: Network namespace this network device is inside
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*
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* @ml_priv: Mid-layer private
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* @lstats: Loopback statistics
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* @tstats: Tunnel statistics
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* @dstats: Dummy statistics
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* @vstats: Virtual ethernet statistics
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*
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* @garp_port: GARP
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* @mrp_port: MRP
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*
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* @dev: Class/net/name entry
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* @sysfs_groups: Space for optional device, statistics and wireless
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* sysfs groups
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*
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* @sysfs_rx_queue_group: Space for optional per-rx queue attributes
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* @rtnl_link_ops: Rtnl_link_ops
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*
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* @gso_max_size: Maximum size of generic segmentation offload
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* @gso_max_segs: Maximum number of segments that can be passed to the
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* NIC for GSO
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*
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* @dcbnl_ops: Data Center Bridging netlink ops
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* @num_tc: Number of traffic classes in the net device
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* @tc_to_txq: XXX: need comments on this one
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* @prio_tc_map XXX: need comments on this one
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*
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* @fcoe_ddp_xid: Max exchange id for FCoE LRO by ddp
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*
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* @priomap: XXX: need comments on this one
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* @phydev: Physical device may attach itself
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* for hardware timestamping
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*
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* @qdisc_tx_busylock: XXX: need comments on this one
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*
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* @group: The group, that the device belongs to
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* @pm_qos_req: Power Management QoS object
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*
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* FIXME: cleanup struct net_device such that network protocol info
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* moves out.
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*/
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struct net_device {
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/*
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* This is the first field of the "visible" part of this structure
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* (i.e. as seen by users in the "Space.c" file). It is the name
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* of the interface.
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*/
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char name[IFNAMSIZ];
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/* device name hash chain, please keep it close to name[] */
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struct hlist_node name_hlist;
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/* snmp alias */
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char *ifalias;
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/*
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* I/O specific fields
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* FIXME: Merge these and struct ifmap into one
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*/
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unsigned long mem_end; /* shared mem end */
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unsigned long mem_start; /* shared mem start */
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unsigned long base_addr; /* device I/O address */
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int irq; /* device IRQ number */
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unsigned long mem_end;
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unsigned long mem_start;
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unsigned long base_addr;
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int irq;
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/*
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* Some hardware also needs these fields, but they are not
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* Some hardware also needs these fields (state,dev_list,
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* napi_list,unreg_list,close_list) but they are not
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* part of the usual set specified in Space.c.
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*/
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@ -1277,106 +1463,74 @@ struct net_device {
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struct list_head unreg_list;
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struct list_head close_list;
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/* directly linked devices, like slaves for bonding */
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struct {
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struct list_head upper;
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struct list_head lower;
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} adj_list;
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/* all linked devices, *including* neighbours */
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struct {
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struct list_head upper;
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struct list_head lower;
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} all_adj_list;
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/* currently active device features */
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netdev_features_t features;
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/* user-changeable features */
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netdev_features_t hw_features;
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/* user-requested features */
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netdev_features_t wanted_features;
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/* mask of features inheritable by VLAN devices */
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netdev_features_t vlan_features;
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/* mask of features inherited by encapsulating devices
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* This field indicates what encapsulation offloads
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* the hardware is capable of doing, and drivers will
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* need to set them appropriately.
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*/
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netdev_features_t hw_enc_features;
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/* mask of fetures inheritable by MPLS */
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netdev_features_t mpls_features;
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/* Interface index. Unique device identifier */
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int ifindex;
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int iflink;
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struct net_device_stats stats;
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/* dropped packets by core network, Do not use this in drivers */
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atomic_long_t rx_dropped;
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atomic_long_t tx_dropped;
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/* Stats to monitor carrier on<->off transitions */
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atomic_t carrier_changes;
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#ifdef CONFIG_WIRELESS_EXT
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/* List of functions to handle Wireless Extensions (instead of ioctl).
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* See <net/iw_handler.h> for details. Jean II */
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const struct iw_handler_def * wireless_handlers;
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/* Instance data managed by the core of Wireless Extensions. */
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struct iw_public_data * wireless_data;
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#endif
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/* Management operations */
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const struct net_device_ops *netdev_ops;
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const struct ethtool_ops *ethtool_ops;
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const struct forwarding_accel_ops *fwd_ops;
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/* Hardware header description */
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const struct header_ops *header_ops;
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unsigned int flags; /* interface flags (a la BSD) */
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unsigned int priv_flags; /* Like 'flags' but invisible to userspace.
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* See if.h for definitions. */
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unsigned int flags;
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unsigned int priv_flags;
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unsigned short gflags;
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unsigned short padded; /* How much padding added by alloc_netdev() */
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unsigned short padded;
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unsigned char operstate; /* RFC2863 operstate */
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unsigned char link_mode; /* mapping policy to operstate */
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unsigned char operstate;
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unsigned char link_mode;
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unsigned char if_port; /* Selectable AUI, TP,..*/
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unsigned char dma; /* DMA channel */
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unsigned char if_port;
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unsigned char dma;
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unsigned int mtu; /* interface MTU value */
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unsigned short type; /* interface hardware type */
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unsigned short hard_header_len; /* hardware hdr length */
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unsigned int mtu;
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unsigned short type;
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unsigned short hard_header_len;
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/* extra head- and tailroom the hardware may need, but not in all cases
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* can this be guaranteed, especially tailroom. Some cases also use
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* LL_MAX_HEADER instead to allocate the skb.
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*/
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unsigned short needed_headroom;
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unsigned short needed_tailroom;
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/* Interface address info. */
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unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */
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unsigned char addr_assign_type; /* hw address assignment type */
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unsigned char addr_len; /* hardware address length */
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unsigned char perm_addr[MAX_ADDR_LEN];
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unsigned char addr_assign_type;
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unsigned char addr_len;
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unsigned short neigh_priv_len;
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unsigned short dev_id; /* Used to differentiate devices
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* that share the same link
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* layer address
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*/
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unsigned short dev_port; /* Used to differentiate
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* devices that share the same
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* function
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*/
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unsigned short dev_id;
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unsigned short dev_port;
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spinlock_t addr_list_lock;
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struct netdev_hw_addr_list uc; /* Unicast mac addresses */
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struct netdev_hw_addr_list mc; /* Multicast mac addresses */
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struct netdev_hw_addr_list dev_addrs; /* list of device
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* hw addresses
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*/
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struct netdev_hw_addr_list uc;
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struct netdev_hw_addr_list mc;
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struct netdev_hw_addr_list dev_addrs;
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#ifdef CONFIG_SYSFS
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struct kset *queues_kset;
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#endif
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@ -1391,40 +1545,34 @@ struct net_device {
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/* Protocol specific pointers */
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#if IS_ENABLED(CONFIG_VLAN_8021Q)
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struct vlan_info __rcu *vlan_info; /* VLAN info */
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struct vlan_info __rcu *vlan_info;
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#endif
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#if IS_ENABLED(CONFIG_NET_DSA)
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struct dsa_switch_tree *dsa_ptr; /* dsa specific data */
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struct dsa_switch_tree *dsa_ptr;
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#endif
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#if IS_ENABLED(CONFIG_TIPC)
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struct tipc_bearer __rcu *tipc_ptr; /* TIPC specific data */
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struct tipc_bearer __rcu *tipc_ptr;
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#endif
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void *atalk_ptr; /* AppleTalk link */
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struct in_device __rcu *ip_ptr; /* IPv4 specific data */
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struct dn_dev __rcu *dn_ptr; /* DECnet specific data */
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struct inet6_dev __rcu *ip6_ptr; /* IPv6 specific data */
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void *ax25_ptr; /* AX.25 specific data */
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struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data,
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assign before registering */
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void *atalk_ptr;
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struct in_device __rcu *ip_ptr;
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struct dn_dev __rcu *dn_ptr;
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struct inet6_dev __rcu *ip6_ptr;
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void *ax25_ptr;
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struct wireless_dev *ieee80211_ptr;
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/*
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* Cache lines mostly used on receive path (including eth_type_trans())
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*/
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unsigned long last_rx; /* Time of last Rx */
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unsigned long last_rx;
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/* Interface address info used in eth_type_trans() */
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unsigned char *dev_addr; /* hw address, (before bcast
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because most packets are
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unicast) */
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unsigned char *dev_addr;
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#ifdef CONFIG_SYSFS
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struct netdev_rx_queue *_rx;
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/* Number of RX queues allocated at register_netdev() time */
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unsigned int num_rx_queues;
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/* Number of RX queues currently active in device */
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unsigned int real_num_rx_queues;
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#endif
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@ -1433,33 +1581,23 @@ struct net_device {
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void __rcu *rx_handler_data;
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struct netdev_queue __rcu *ingress_queue;
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unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
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unsigned char broadcast[MAX_ADDR_LEN];
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/*
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* Cache lines mostly used on transmit path
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*/
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struct netdev_queue *_tx ____cacheline_aligned_in_smp;
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/* Number of TX queues allocated at alloc_netdev_mq() time */
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unsigned int num_tx_queues;
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/* Number of TX queues currently active in device */
|
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unsigned int real_num_tx_queues;
|
||||
|
||||
/* root qdisc from userspace point of view */
|
||||
struct Qdisc *qdisc;
|
||||
|
||||
unsigned long tx_queue_len; /* Max frames per queue allowed */
|
||||
unsigned long tx_queue_len;
|
||||
spinlock_t tx_global_lock;
|
||||
|
||||
#ifdef CONFIG_XPS
|
||||
struct xps_dev_maps __rcu *xps_maps;
|
||||
#endif
|
||||
#ifdef CONFIG_RFS_ACCEL
|
||||
/* CPU reverse-mapping for RX completion interrupts, indexed
|
||||
* by RX queue number. Assigned by driver. This must only be
|
||||
* set if the ndo_rx_flow_steer operation is defined. */
|
||||
struct cpu_rmap *rx_cpu_rmap;
|
||||
#endif
|
||||
|
||||
|
|
@ -1469,22 +1607,17 @@ struct net_device {
|
|||
* trans_start here is expensive for high speed devices on SMP,
|
||||
* please use netdev_queue->trans_start instead.
|
||||
*/
|
||||
unsigned long trans_start; /* Time (in jiffies) of last Tx */
|
||||
unsigned long trans_start;
|
||||
|
||||
int watchdog_timeo; /* used by dev_watchdog() */
|
||||
int watchdog_timeo;
|
||||
struct timer_list watchdog_timer;
|
||||
|
||||
/* Number of references to this device */
|
||||
int __percpu *pcpu_refcnt;
|
||||
|
||||
/* delayed register/unregister */
|
||||
struct list_head todo_list;
|
||||
/* device index hash chain */
|
||||
struct hlist_node index_hlist;
|
||||
|
||||
struct hlist_node index_hlist;
|
||||
struct list_head link_watch_list;
|
||||
|
||||
/* register/unregister state machine */
|
||||
enum { NETREG_UNINITIALIZED=0,
|
||||
NETREG_REGISTERED, /* completed register_netdevice */
|
||||
NETREG_UNREGISTERING, /* called unregister_netdevice */
|
||||
|
|
@ -1493,14 +1626,13 @@ struct net_device {
|
|||
NETREG_DUMMY, /* dummy device for NAPI poll */
|
||||
} reg_state:8;
|
||||
|
||||
bool dismantle; /* device is going do be freed */
|
||||
bool dismantle;
|
||||
|
||||
enum {
|
||||
RTNL_LINK_INITIALIZED,
|
||||
RTNL_LINK_INITIALIZING,
|
||||
} rtnl_link_state:16;
|
||||
|
||||
/* Called from unregister, can be used to call free_netdev */
|
||||
void (*destructor)(struct net_device *dev);
|
||||
|
||||
#ifdef CONFIG_NETPOLL
|
||||
|
|
@ -1508,31 +1640,25 @@ struct net_device {
|
|||
#endif
|
||||
|
||||
#ifdef CONFIG_NET_NS
|
||||
/* Network namespace this network device is inside */
|
||||
struct net *nd_net;
|
||||
#endif
|
||||
|
||||
/* mid-layer private */
|
||||
union {
|
||||
void *ml_priv;
|
||||
struct pcpu_lstats __percpu *lstats; /* loopback stats */
|
||||
void *ml_priv;
|
||||
struct pcpu_lstats __percpu *lstats;
|
||||
struct pcpu_sw_netstats __percpu *tstats;
|
||||
struct pcpu_dstats __percpu *dstats; /* dummy stats */
|
||||
struct pcpu_vstats __percpu *vstats; /* veth stats */
|
||||
struct pcpu_dstats __percpu *dstats;
|
||||
struct pcpu_vstats __percpu *vstats;
|
||||
};
|
||||
/* GARP */
|
||||
|
||||
struct garp_port __rcu *garp_port;
|
||||
/* MRP */
|
||||
struct mrp_port __rcu *mrp_port;
|
||||
|
||||
/* class/net/name entry */
|
||||
struct device dev;
|
||||
/* space for optional device, statistics, and wireless sysfs groups */
|
||||
struct device dev;
|
||||
const struct attribute_group *sysfs_groups[4];
|
||||
/* space for optional per-rx queue attributes */
|
||||
const struct attribute_group *sysfs_rx_queue_group;
|
||||
|
||||
/* rtnetlink link ops */
|
||||
const struct rtnl_link_ops *rtnl_link_ops;
|
||||
|
||||
/* for setting kernel sock attribute on TCP connection setup */
|
||||
|
|
@ -1542,7 +1668,6 @@ struct net_device {
|
|||
u16 gso_max_segs;
|
||||
|
||||
#ifdef CONFIG_DCB
|
||||
/* Data Center Bridging netlink ops */
|
||||
const struct dcbnl_rtnl_ops *dcbnl_ops;
|
||||
#endif
|
||||
u8 num_tc;
|
||||
|
|
@ -1550,20 +1675,14 @@ struct net_device {
|
|||
u8 prio_tc_map[TC_BITMASK + 1];
|
||||
|
||||
#if IS_ENABLED(CONFIG_FCOE)
|
||||
/* max exchange id for FCoE LRO by ddp */
|
||||
unsigned int fcoe_ddp_xid;
|
||||
#endif
|
||||
#if IS_ENABLED(CONFIG_CGROUP_NET_PRIO)
|
||||
struct netprio_map __rcu *priomap;
|
||||
#endif
|
||||
/* phy device may attach itself for hardware timestamping */
|
||||
struct phy_device *phydev;
|
||||
|
||||
struct lock_class_key *qdisc_tx_busylock;
|
||||
|
||||
/* group the device belongs to */
|
||||
int group;
|
||||
|
||||
struct pm_qos_request pm_qos_req;
|
||||
};
|
||||
#define to_net_dev(d) container_of(d, struct net_device, dev)
|
||||
|
|
|
|||
Loading…
Reference in New Issue