.. SPDX-License-Identifier: GPL-2.0 .. Copyright (C) 2023 Google LLC =========================================== net_device struct fast path usage breakdown =========================================== =================================== =========================== =================== =================== =================================================================================== Type Name fastpath_tx_access fastpath_rx_access Comments =================================== =========================== =================== =================== =================================================================================== unsigned_long:32 priv_flags read_mostly __dev_queue_xmit(tx) unsigned_long:1 lltx read_mostly HARD_TX_LOCK,HARD_TX_TRYLOCK,HARD_TX_UNLOCK(tx) char name[16] struct netdev_name_node* name_node struct dev_ifalias* ifalias unsigned_long mem_end unsigned_long mem_start unsigned_long base_addr unsigned_long state read_mostly read_mostly netif_running(dev) struct list_head dev_list struct list_head napi_list struct list_head unreg_list struct list_head close_list struct list_head ptype_all read_mostly dev_nit_active(tx) struct list_head ptype_specific read_mostly deliver_ptype_list_skb/__netif_receive_skb_core(rx) struct adj_list unsigned_int flags read_mostly read_mostly __dev_queue_xmit,__dev_xmit_skb,ip6_output,__ip6_finish_output(tx);ip6_rcv_core(rx) xdp_features_t xdp_features struct net_device_ops* netdev_ops read_mostly netdev_core_pick_tx,netdev_start_xmit(tx) struct xdp_metadata_ops* xdp_metadata_ops int ifindex read_mostly ip6_rcv_core unsigned_short gflags unsigned_short hard_header_len read_mostly read_mostly ip6_xmit(tx);gro_list_prepare(rx) unsigned_int mtu read_mostly ip_finish_output2 unsigned_short needed_headroom read_mostly LL_RESERVED_SPACE/ip_finish_output2 unsigned_short needed_tailroom netdev_features_t features read_mostly read_mostly HARD_TX_LOCK,netif_skb_features,sk_setup_caps(tx);netif_elide_gro(rx) netdev_features_t hw_features netdev_features_t wanted_features netdev_features_t vlan_features netdev_features_t hw_enc_features netif_skb_features netdev_features_t mpls_features netdev_features_t gso_partial_features read_mostly gso_features_check unsigned_int min_mtu unsigned_int max_mtu unsigned_short type unsigned_char min_header_len unsigned_char name_assign_type int group struct net_device_stats stats struct net_device_core_stats* core_stats atomic_t carrier_up_count atomic_t carrier_down_count struct iw_handler_def* wireless_handlers struct ethtool_ops* ethtool_ops struct l3mdev_ops* l3mdev_ops struct ndisc_ops* ndisc_ops struct xfrmdev_ops* xfrmdev_ops struct tlsdev_ops* tlsdev_ops struct header_ops* header_ops read_mostly ip_finish_output2,ip6_finish_output2(tx) unsigned_char operstate unsigned_char link_mode unsigned_char if_port unsigned_char dma unsigned_char perm_addr[32] unsigned_char addr_assign_type unsigned_char addr_len unsigned_char upper_level unsigned_char lower_level unsigned_short neigh_priv_len unsigned_short padded unsigned_short dev_id unsigned_short dev_port spinlock_t addr_list_lock int irq struct netdev_hw_addr_list uc struct netdev_hw_addr_list mc struct netdev_hw_addr_list dev_addrs struct kset* queues_kset struct list_head unlink_list unsigned_int promiscuity unsigned_int allmulti bool uc_promisc unsigned_char nested_level struct in_device* ip_ptr read_mostly read_mostly __in_dev_get struct hlist_head fib_nh_head struct inet6_dev* ip6_ptr read_mostly read_mostly __in6_dev_get struct vlan_info* vlan_info struct dsa_port* dsa_ptr struct tipc_bearer* tipc_ptr void* atalk_ptr void* ax25_ptr struct wireless_dev* ieee80211_ptr struct wpan_dev* ieee802154_ptr struct mpls_dev* mpls_ptr struct mctp_dev* mctp_ptr unsigned_char* dev_addr struct netdev_queue* _rx read_mostly netdev_get_rx_queue(rx) unsigned_int num_rx_queues unsigned_int real_num_rx_queues read_mostly get_rps_cpu struct bpf_prog* xdp_prog read_mostly netif_elide_gro() unsigned_long gro_flush_timeout read_mostly napi_complete_done u32 napi_defer_hard_irqs read_mostly napi_complete_done unsigned_int gro_max_size read_mostly skb_gro_receive unsigned_int gro_ipv4_max_size read_mostly skb_gro_receive rx_handler_func_t* rx_handler read_mostly __netif_receive_skb_core void* rx_handler_data read_mostly struct netdev_queue* ingress_queue read_mostly struct bpf_mprog_entry tcx_ingress read_mostly sch_handle_ingress struct nf_hook_entries* nf_hooks_ingress unsigned_char broadcast[32] struct cpu_rmap* rx_cpu_rmap struct hlist_node index_hlist struct netdev_queue* _tx read_mostly netdev_get_tx_queue(tx) unsigned_int num_tx_queues unsigned_int real_num_tx_queues read_mostly skb_tx_hash,netdev_core_pick_tx(tx) unsigned_int tx_queue_len spinlock_t tx_global_lock struct xdp_dev_bulk_queue__percpu* xdp_bulkq struct xps_dev_maps* xps_maps[2] read_mostly __netif_set_xps_queue struct bpf_mprog_entry tcx_egress read_mostly sch_handle_egress struct nf_hook_entries* nf_hooks_egress read_mostly struct hlist_head qdisc_hash[16] struct timer_list watchdog_timer int watchdog_timeo u32 proto_down_reason struct list_head todo_list int__percpu* pcpu_refcnt refcount_t dev_refcnt struct ref_tracker_dir refcnt_tracker struct list_head link_watch_list enum:8 reg_state bool dismantle enum:16 rtnl_link_state bool needs_free_netdev void*priv_destructor struct net_device struct netpoll_info* npinfo read_mostly napi_poll/napi_poll_lock possible_net_t nd_net read_mostly (dev_net)napi_busy_loop,tcp_v(4/6)_rcv,ip(v6)_rcv,ip(6)_input,ip(6)_input_finish void* ml_priv enum_netdev_ml_priv_type ml_priv_type struct pcpu_lstats__percpu* lstats read_mostly dev_lstats_add() struct pcpu_sw_netstats__percpu* tstats read_mostly dev_sw_netstats_tx_add() struct pcpu_dstats__percpu* dstats struct garp_port* garp_port struct mrp_port* mrp_port struct dm_hw_stat_delta* dm_private struct device dev struct attribute_group* sysfs_groups[4] struct attribute_group* sysfs_rx_queue_group struct rtnl_link_ops* rtnl_link_ops unsigned_int gso_max_size read_mostly sk_dst_gso_max_size unsigned_int tso_max_size u16 gso_max_segs read_mostly gso_max_segs u16 tso_max_segs unsigned_int gso_ipv4_max_size read_mostly sk_dst_gso_max_size struct dcbnl_rtnl_ops* dcbnl_ops s16 num_tc read_mostly skb_tx_hash struct netdev_tc_txq tc_to_txq[16] read_mostly skb_tx_hash u8 prio_tc_map[16] unsigned_int fcoe_ddp_xid struct netprio_map* priomap struct phy_device* phydev struct sfp_bus* sfp_bus struct lock_class_key* qdisc_tx_busylock bool proto_down unsigned:1 wol_enabled unsigned:1 threaded napi_poll(napi_enable,dev_set_threaded) unsigned_long:1 see_all_hwtstamp_requests unsigned_long:1 change_proto_down unsigned_long:1 netns_immutable unsigned_long:1 fcoe_mtu struct list_head net_notifier_list struct macsec_ops* macsec_ops struct udp_tunnel_nic_info* udp_tunnel_nic_info struct udp_tunnel_nic* udp_tunnel_nic unsigned_int xdp_zc_max_segs struct bpf_xdp_entity xdp_state[3] u8 dev_addr_shadow[32] netdevice_tracker linkwatch_dev_tracker netdevice_tracker watchdog_dev_tracker netdevice_tracker dev_registered_tracker struct rtnl_hw_stats64* offload_xstats_l3 struct devlink_port* devlink_port struct dpll_pin* dpll_pin struct hlist_head page_pools struct dim_irq_moder* irq_moder u64 max_pacing_offload_horizon struct_napi_config* napi_config unsigned_long gro_flush_timeout u32 napi_defer_hard_irqs struct hlist_head neighbours[2] =================================== =========================== =================== =================== ===================================================================================