1.. SPDX-License-Identifier: GPL-2.0 2.. Copyright (C) 2023 Google LLC 3 4=========================================== 5net_device struct fast path usage breakdown 6=========================================== 7 8=================================== =========================== =================== =================== =================================================================================== 9Type Name fastpath_tx_access fastpath_rx_access Comments 10=================================== =========================== =================== =================== =================================================================================== 11unsigned_long:32 priv_flags read_mostly __dev_queue_xmit(tx) 12unsigned_long:1 lltx read_mostly HARD_TX_LOCK,HARD_TX_TRYLOCK,HARD_TX_UNLOCK(tx) 13char name[16] 14struct netdev_name_node* name_node 15struct dev_ifalias* ifalias 16unsigned_long mem_end 17unsigned_long mem_start 18unsigned_long base_addr 19unsigned_long state read_mostly read_mostly netif_running(dev) 20struct list_head dev_list 21struct list_head napi_list 22struct list_head unreg_list 23struct list_head close_list 24struct list_head ptype_all read_mostly dev_nit_active(tx) 25struct list_head ptype_specific read_mostly deliver_ptype_list_skb/__netif_receive_skb_core(rx) 26struct adj_list 27unsigned_int flags read_mostly read_mostly __dev_queue_xmit,__dev_xmit_skb,ip6_output,__ip6_finish_output(tx);ip6_rcv_core(rx) 28xdp_features_t xdp_features 29struct net_device_ops* netdev_ops read_mostly netdev_core_pick_tx,netdev_start_xmit(tx) 30struct xdp_metadata_ops* xdp_metadata_ops 31int ifindex read_mostly ip6_rcv_core 32unsigned_short gflags 33unsigned_short hard_header_len read_mostly read_mostly ip6_xmit(tx);gro_list_prepare(rx) 34unsigned_int mtu read_mostly ip_finish_output2 35unsigned_short needed_headroom read_mostly LL_RESERVED_SPACE/ip_finish_output2 36unsigned_short needed_tailroom 37netdev_features_t features read_mostly read_mostly HARD_TX_LOCK,netif_skb_features,sk_setup_caps(tx);netif_elide_gro(rx) 38netdev_features_t hw_features 39netdev_features_t wanted_features 40netdev_features_t vlan_features 41netdev_features_t hw_enc_features netif_skb_features 42netdev_features_t mpls_features 43netdev_features_t gso_partial_features read_mostly gso_features_check 44unsigned_int min_mtu 45unsigned_int max_mtu 46unsigned_short type 47unsigned_char min_header_len 48unsigned_char name_assign_type 49int group 50struct net_device_stats stats 51struct net_device_core_stats* core_stats 52atomic_t carrier_up_count 53atomic_t carrier_down_count 54struct iw_handler_def* wireless_handlers 55struct ethtool_ops* ethtool_ops 56struct l3mdev_ops* l3mdev_ops 57struct ndisc_ops* ndisc_ops 58struct xfrmdev_ops* xfrmdev_ops 59struct tlsdev_ops* tlsdev_ops 60struct header_ops* header_ops read_mostly ip_finish_output2,ip6_finish_output2(tx) 61unsigned_char operstate 62unsigned_char link_mode 63unsigned_char if_port 64unsigned_char dma 65unsigned_char perm_addr[32] 66unsigned_char addr_assign_type 67unsigned_char addr_len 68unsigned_char upper_level 69unsigned_char lower_level 70unsigned_short neigh_priv_len 71unsigned_short padded 72unsigned_short dev_id 73unsigned_short dev_port 74spinlock_t addr_list_lock 75int irq 76struct netdev_hw_addr_list uc 77struct netdev_hw_addr_list mc 78struct netdev_hw_addr_list dev_addrs 79struct kset* queues_kset 80struct list_head unlink_list 81unsigned_int promiscuity 82unsigned_int allmulti 83bool uc_promisc 84unsigned_char nested_level 85struct in_device* ip_ptr read_mostly read_mostly __in_dev_get 86struct hlist_head fib_nh_head 87struct inet6_dev* ip6_ptr read_mostly read_mostly __in6_dev_get 88struct vlan_info* vlan_info 89struct dsa_port* dsa_ptr 90struct tipc_bearer* tipc_ptr 91void* atalk_ptr 92void* ax25_ptr 93struct wireless_dev* ieee80211_ptr 94struct wpan_dev* ieee802154_ptr 95struct mpls_dev* mpls_ptr 96struct mctp_dev* mctp_ptr 97unsigned_char* dev_addr 98struct netdev_queue* _rx read_mostly netdev_get_rx_queue(rx) 99unsigned_int num_rx_queues 100unsigned_int real_num_rx_queues read_mostly get_rps_cpu 101struct bpf_prog* xdp_prog read_mostly netif_elide_gro() 102unsigned_long gro_flush_timeout read_mostly napi_complete_done 103u32 napi_defer_hard_irqs read_mostly napi_complete_done 104unsigned_int gro_max_size read_mostly skb_gro_receive 105unsigned_int gro_ipv4_max_size read_mostly skb_gro_receive 106rx_handler_func_t* rx_handler read_mostly __netif_receive_skb_core 107void* rx_handler_data read_mostly 108struct netdev_queue* ingress_queue read_mostly 109struct bpf_mprog_entry tcx_ingress read_mostly sch_handle_ingress 110struct nf_hook_entries* nf_hooks_ingress 111unsigned_char broadcast[32] 112struct cpu_rmap* rx_cpu_rmap 113struct hlist_node index_hlist 114struct netdev_queue* _tx read_mostly netdev_get_tx_queue(tx) 115unsigned_int num_tx_queues 116unsigned_int real_num_tx_queues read_mostly skb_tx_hash,netdev_core_pick_tx(tx) 117unsigned_int tx_queue_len 118spinlock_t tx_global_lock 119struct xdp_dev_bulk_queue__percpu* xdp_bulkq 120struct xps_dev_maps* xps_maps[2] read_mostly __netif_set_xps_queue 121struct bpf_mprog_entry tcx_egress read_mostly sch_handle_egress 122struct nf_hook_entries* nf_hooks_egress read_mostly 123struct hlist_head qdisc_hash[16] 124struct timer_list watchdog_timer 125int watchdog_timeo 126u32 proto_down_reason 127struct list_head todo_list 128int__percpu* pcpu_refcnt 129refcount_t dev_refcnt 130struct ref_tracker_dir refcnt_tracker 131struct list_head link_watch_list 132enum:8 reg_state 133bool dismantle 134enum:16 rtnl_link_state 135bool needs_free_netdev 136void*priv_destructor struct net_device 137struct netpoll_info* npinfo read_mostly napi_poll/napi_poll_lock 138possible_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 139void* ml_priv 140enum_netdev_ml_priv_type ml_priv_type 141struct pcpu_lstats__percpu* lstats read_mostly dev_lstats_add() 142struct pcpu_sw_netstats__percpu* tstats read_mostly dev_sw_netstats_tx_add() 143struct pcpu_dstats__percpu* dstats 144struct garp_port* garp_port 145struct mrp_port* mrp_port 146struct dm_hw_stat_delta* dm_private 147struct device dev 148struct attribute_group* sysfs_groups[4] 149struct attribute_group* sysfs_rx_queue_group 150struct rtnl_link_ops* rtnl_link_ops 151unsigned_int gso_max_size read_mostly sk_dst_gso_max_size 152unsigned_int tso_max_size 153u16 gso_max_segs read_mostly gso_max_segs 154u16 tso_max_segs 155unsigned_int gso_ipv4_max_size read_mostly sk_dst_gso_max_size 156struct dcbnl_rtnl_ops* dcbnl_ops 157s16 num_tc read_mostly skb_tx_hash 158struct netdev_tc_txq tc_to_txq[16] read_mostly skb_tx_hash 159u8 prio_tc_map[16] 160unsigned_int fcoe_ddp_xid 161struct netprio_map* priomap 162struct phy_device* phydev 163struct sfp_bus* sfp_bus 164struct lock_class_key* qdisc_tx_busylock 165bool proto_down 166unsigned:1 wol_enabled 167unsigned:1 threaded napi_poll(napi_enable,dev_set_threaded) 168unsigned_long:1 see_all_hwtstamp_requests 169unsigned_long:1 change_proto_down 170unsigned_long:1 netns_local 171unsigned_long:1 fcoe_mtu 172struct list_head net_notifier_list 173struct macsec_ops* macsec_ops 174struct udp_tunnel_nic_info* udp_tunnel_nic_info 175struct udp_tunnel_nic* udp_tunnel_nic 176unsigned_int xdp_zc_max_segs 177struct bpf_xdp_entity xdp_state[3] 178u8 dev_addr_shadow[32] 179netdevice_tracker linkwatch_dev_tracker 180netdevice_tracker watchdog_dev_tracker 181netdevice_tracker dev_registered_tracker 182struct rtnl_hw_stats64* offload_xstats_l3 183struct devlink_port* devlink_port 184struct dpll_pin* dpll_pin 185struct hlist_head page_pools 186struct dim_irq_moder* irq_moder 187u64 max_pacing_offload_horizon 188struct_napi_config* napi_config 189unsigned_long gro_flush_timeout 190u32 napi_defer_hard_irqs 191=================================== =========================== =================== =================== 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