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- Concepts
  Concepts
  - Maps
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  - Functions
  - Concurrency
  - Pinning
  - Tail calls
  - Loops
  - Timers
  - Resource Limit
  - AF_XDP
  - KFuncs
  - Dynptrs
  - Token
- Program types
  Program types
  - Network program types
    Network program types
    
    BPF_PROG_TYPE_SOCKET_FILTER
    
    BPF_PROG_TYPE_SCHED_CLS
    
    BPF_PROG_TYPE_SCHED_ACT
    
    BPF_PROG_TYPE_XDP
    
    BPF_PROG_TYPE_SOCK_OPS
    
    BPF_PROG_TYPE_SK_SKB
    
    BPF_PROG_TYPE_SK_MSG
    
    BPF_PROG_TYPE_SK_LOOKUP
    
    BPF_PROG_TYPE_SK_REUSEPORT
    
    BPF_PROG_TYPE_FLOW_DISSECTOR
    
    BPF_PROG_TYPE_NETFILTER
    
    Light weight tunnel program types
    Light weight tunnel program types
    
    BPF_PROG_TYPE_LWT_IN
    
    BPF_PROG_TYPE_LWT_OUT
    
    BPF_PROG_TYPE_LWT_XMIT
    
    BPF_PROG_TYPE_LWT_SEG6LOCAL
  - cGroup program types
    cGroup program types
    
    BPF_PROG_TYPE_CGROUP_SKB
    
    BPF_PROG_TYPE_CGROUP_SOCK
    
    BPF_PROG_TYPE_CGROUP_DEVICE
    
    BPF_PROG_TYPE_CGROUP_SOCK_ADDR
    
    BPF_PROG_TYPE_CGROUP_SOCKOPT
    
    BPF_PROG_TYPE_CGROUP_SYSCTL
  - Tracing program types
    Tracing program types
    
    BPF_PROG_TYPE_KPROBE
    
    BPF_PROG_TYPE_TRACEPOINT
    
    BPF_PROG_TYPE_PERF_EVENT
    
    BPF_PROG_TYPE_RAW_TRACEPOINT
    
    BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE
    
    BPF_PROG_TYPE_TRACING
  - BPF_PROG_TYPE_LIRC_MODE2
  - BPF_PROG_TYPE_LSM
  - BPF_PROG_TYPE_EXT
  - BPF_PROG_TYPE_STRUCT_OPS
  - BPF_PROG_TYPE_SYSCALL
- Map types
  Map types
  - Generic map types
    Generic map types
    
    BPF_MAP_TYPE_HASH
    
    BPF_MAP_TYPE_ARRAY
    
    BPF_MAP_TYPE_PERCPU_HASH
    
    BPF_MAP_TYPE_PERCPU_ARRAY
    
    BPF_MAP_TYPE_QUEUE
    
    BPF_MAP_TYPE_STACK
    
    BPF_MAP_TYPE_LRU_HASH
    
    BPF_MAP_TYPE_LRU_PERCPU_HASH
    
    BPF_MAP_TYPE_LPM_TRIE
    
    BPF_MAP_TYPE_BLOOM_FILTER
    
    BPF_MAP_TYPE_ARENA
  - Map in map
    Map in map
    
    BPF_MAP_TYPE_ARRAY_OF_MAPS
    
    BPF_MAP_TYPE_HASH_OF_MAPS
  - Streaming
    Streaming
    
    BPF_MAP_TYPE_PERF_EVENT_ARRAY
    
    BPF_MAP_TYPE_RINGBUF
    
    BPF_MAP_TYPE_USER_RINGBUF
  - Packet redirection
    Packet redirection
    
    BPF_MAP_TYPE_DEVMAP
    
    BPF_MAP_TYPE_SOCKMAP
    
    BPF_MAP_TYPE_CPUMAP
    
    BPF_MAP_TYPE_XSKMAP
    
    BPF_MAP_TYPE_SOCKHASH
    
    BPF_MAP_TYPE_DEVMAP_HASH
    
    BPF_MAP_TYPE_REUSEPORT_SOCKARRAY
  - Flow redirection
    Flow redirection
    
    BPF_MAP_TYPE_PROG_ARRAY
  - Object attached storage
    Object attached storage
    
    BPF_MAP_TYPE_CGROUP_STORAGE
    
    BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE
    
    BPF_MAP_TYPE_SK_STORAGE
    
    BPF_MAP_TYPE_INODE_STORAGE
    
    BPF_MAP_TYPE_TASK_STORAGE
    
    BPF_MAP_TYPE_CGRP_STORAGE
  - Misc
    Misc
    
    BPF_MAP_TYPE_CGROUP_ARRAY
    
    BPF_MAP_TYPE_STACK_TRACE
    
    BPF_MAP_TYPE_STRUCT_OPS
- Helper functions
  Helper functions
  - Map helpers
    Map helpers
    
    Generic map helpers
    Generic map helpers
    
    bpf_map_lookup_elem
    
    bpf_map_update_elem
    
    bpf_map_delete_elem
    
    bpf_for_each_map_elem
    
    bpf_map_lookup_percpu_elem
    
    bpf_spin_lock
    
    bpf_spin_unlock
    
    Perf event array helpers
    Perf event array helpers
    
    bpf_perf_event_read
    
    bpf_perf_event_output
    
    bpf_perf_event_read_value
    
    bpf_skb_output
    
    bpf_xdp_output
    
    Tail call helpers
    Tail call helpers
    
    bpf_tail_call
    
    Timer helpers
    Timer helpers
    
    bpf_timer_init
    
    bpf_timer_set_callback
    
    bpf_timer_start
    
    bpf_timer_cancel
    
    Queue and stack helpers
    Queue and stack helpers
    
    bpf_map_push_elem
    
    bpf_map_pop_elem
    
    bpf_map_peek_elem
    
    Ring buffer helper
    Ring buffer helper
    
    bpf_ringbuf_output
    
    bpf_ringbuf_reserve
    
    bpf_ringbuf_submit
    
    bpf_ringbuf_discard
    
    bpf_ringbuf_query
    
    bpf_ringbuf_reserve_dynptr
    
    bpf_ringbuf_submit_dynptr
    
    bpf_ringbuf_discard_dynptr
    
    Socket map helpers
    Socket map helpers
    
    bpf_sock_map_update
    
    Socket hash helpers
    Socket hash helpers
    
    bpf_sock_hash_update
    
    Task storage helpers
    Task storage helpers
    
    bpf_task_storage_get
    
    bpf_task_storage_delete
    
    Inode storage helpers
    Inode storage helpers
    
    bpf_inode_storage_get
    
    bpf_inode_storage_delete
    
    Socket storage helpers
    Socket storage helpers
    
    bpf_sk_storage_get
    
    bpf_sk_storage_delete
    
    Local cGroup storage helpers
    Local cGroup storage helpers
    
    bpf_get_local_storage
    
    Global cGroup storage helpers
    Global cGroup storage helpers
    
    bpf_cgrp_storage_get
    
    bpf_cgrp_storage_delete
    
    User ring buffer
    User ring buffer
    
    bpf_user_ringbuf_drain
  - Probe and trace helpers
    Probe and trace helpers
    
    bpf_get_attach_cookie
    
    Memory helpers
    Memory helpers
    
    bpf_probe_read
    
    bpf_probe_write_user
    
    bpf_probe_read_str
    
    bpf_get_stack
    
    bpf_probe_read_user
    
    bpf_probe_read_kernel
    
    bpf_probe_read_user_str
    
    bpf_probe_read_kernel_str
    
    bpf_copy_from_user
    
    bpf_copy_from_user_task
    
    bpf_copy_from_user_task
    
    bpf_find_vma
    
    Process influencing helpers
    Process influencing helpers
    
    bpf_override_return
    
    bpf_get_retval
    
    bpf_set_retval
    
    bpf_send_signal
    
    bpf_send_signal_thread
    
    Tracing helpers
    Tracing helpers
    
    bpf_get_func_ip
    
    bpf_get_func_arg
    
    bpf_get_func_ret
    
    bpf_get_func_arg_cnt
    
    bpf_sock_from_file
    
    Perf event program helpers
    Perf event program helpers
    
    bpf_perf_prog_read_value
  - Information helpers
    Information helpers
    
    Time helpers
    Time helpers
    
    bpf_ktime_get_ns
    
    bpf_jiffies64
    
    bpf_ktime_get_boot_ns
    
    bpf_ktime_get_coarse_ns
    
    bpf_ktime_get_tai_ns
    
    Process info helpers
    Process info helpers
    
    bpf_get_current_pid_tgid
    
    bpf_get_current_uid_gid
    
    bpf_get_current_comm
    
    bpf_get_cgroup_classid
    
    bpf_get_ns_current_pid_tgid
    
    bpf_get_current_task
    
    bpf_get_stackid
    
    bpf_current_task_under_cgroup
    
    bpf_get_current_cgroup_id
    
    bpf_get_current_ancestor_cgroup_id
    
    bpf_get_task_stack
    
    bpf_get_current_task_btf
    
    bpf_task_pt_regs
    
    CPU info helpers
    CPU info helpers
    
    bpf_get_smp_processor_id
    
    bpf_get_numa_node_id
    
    bpf_read_branch_records
    
    bpf_get_branch_snapshot
    
    bpf_per_cpu_ptr
    
    bpf_this_cpu_ptr
  - Print helpers
    Print helpers
    
    bpf_trace_printk
    
    bpf_snprintf
    
    bpf_snprintf_btf
    
    bpf_trace_vprintk
    
    Iterator print helpers
    Iterator print helpers
    
    bpf_seq_printf
    
    bpf_seq_write
    
    bpf_seq_printf_btf
  - Network helpers
    Network helpers
    
    bpf_get_netns_cookie
    
    bpf_check_mtu
    
    bpf_get_route_realm
    
    bpf_fib_lookup
    
    Socket buffer helpers
    Socket buffer helpers
    
    bpf_skb_store_bytes
    
    bpf_skb_load_bytes
    
    bpf_skb_vlan_push
    
    bpf_skb_vlan_pop
    
    bpf_skb_get_tunnel_key
    
    bpf_skb_set_tunnel_key
    
    bpf_skb_get_tunnel_opt
    
    bpf_skb_set_tunnel_opt
    
    bpf_skb_change_proto
    
    bpf_skb_change_type
    
    bpf_skb_under_cgroup
    
    bpf_skb_change_tail
    
    bpf_skb_pull_data
    
    bpf_skb_adjust_room
    
    bpf_skb_change_head
    
    bpf_skb_get_xfrm_state
    
    bpf_skb_load_bytes_relative
    
    bpf_skb_cgroup_id
    
    bpf_skb_ancestor_cgroup_id
    
    bpf_skb_ecn_set_ce
    
    bpf_skb_cgroup_classid
    
    bpf_skb_set_tstamp
    
    bpf_set_hash
    
    bpf_get_hash_recalc
    
    bpf_set_hash_invalid
    
    Checksum helpers
    Checksum helpers
    
    bpf_l3_csum_replace
    
    bpf_l4_csum_replace
    
    bpf_csum_diff
    
    bpf_csum_update
    
    bpf_csum_level
    
    Redirect helpers
    Redirect helpers
    
    bpf_clone_redirect
    
    bpf_redirect
    
    bpf_redirect_map
    
    bpf_sk_redirect_map
    
    bpf_msg_redirect_map
    
    bpf_redirect_peer
    
    bpf_sk_redirect_hash
    
    bpf_msg_redirect_hash
    
    bpf_redirect_neigh
    
    bpf_sk_select_reuseport
    
    bpf_sk_assign
    
    XDP helpers
    XDP helpers
    
    bpf_xdp_adjust_head
    
    bpf_xdp_adjust_tail
    
    bpf_xdp_adjust_meta
    
    bpf_xdp_get_buff_len
    
    bpf_xdp_load_bytes
    
    bpf_xdp_store_bytes
    
    Socket message helpers
    Socket message helpers
    
    bpf_msg_apply_bytes
    
    bpf_msg_cork_bytes
    
    bpf_msg_pull_data
    
    bpf_msg_push_data
    
    bpf_msg_pop_data
    
    LWT helpers
    LWT helpers
    
    bpf_lwt_push_encap
    
    bpf_lwt_seg6_store_bytes
    
    bpf_lwt_seg6_adjust_srh
    
    bpf_lwt_seg6_action
    
    SYN Cookie helpers
    SYN Cookie helpers
    
    bpf_tcp_check_syncookie
    
    bpf_tcp_gen_syncookie
    
    bpf_tcp_raw_gen_syncookie_ipv4
    
    bpf_tcp_raw_gen_syncookie_ipv6
    
    bpf_tcp_raw_check_syncookie_ipv4
    
    bpf_tcp_raw_check_syncookie_ipv6
    
    Socket helpers
    Socket helpers
    
    bpf_sk_lookup_tcp
    
    bpf_sk_lookup_udp
    
    bpf_sk_release
    
    bpf_sk_fullsock
    
    bpf_sk_cgroup_id
    
    bpf_sk_ancestor_cgroup_id
    
    bpf_get_socket_cookie
    
    bpf_get_socket_uid
    
    bpf_setsockopt
    
    bpf_getsockopt
    
    bpf_sock_ops_cb_flags_set
    
    bpf_tcp_sock
    
    bpf_get_listener_sock
    
    bpf_tcp_send_ack
    
    bpf_skc_lookup_tcp
    
    bpf_skc_to_tcp6_sock
    
    bpf_skc_to_tcp_sock
    
    bpf_skc_to_tcp_timewait_sock
    
    bpf_skc_to_tcp_request_sock
    
    bpf_skc_to_udp6_sock
    
    bpf_skc_to_mptcp_sock
    
    bpf_skc_to_unix_sock
    
    bpf_bind
    
    Socket ops helpers
    Socket ops helpers
    
    bpf_load_hdr_opt
    
    bpf_store_hdr_opt
    
    bpf_reserve_hdr_opt
  - Infrared related helpers
    Infrared related helpers
    
    bpf_rc_repeat
    
    bpf_rc_keydown
    
    bpf_rc_pointer_rel
  - Syscall helpers
    Syscall helpers
    
    bpf_sys_bpf
    
    bpf_btf_find_by_name_kind
    
    bpf_sys_close
    
    bpf_kallsyms_lookup_name
  - LSM helpers
    LSM helpers
    
    bpf_bprm_opts_set
    
    bpf_ima_inode_hash
    
    bpf_ima_file_hash
  - Sysctl helpers
    Sysctl helpers
    
    bpf_sysctl_get_name
    
    bpf_sysctl_get_current_value
    
    bpf_sysctl_get_new_value
    
    bpf_sysctl_set_new_value
  - Dynptr
    Dynptr
    
    bpf_dynptr_from_mem
    
    bpf_dynptr_read
    
    bpf_dynptr_write
    
    bpf_dynptr_data
  - Loop helpers
    Loop helpers
    
    bpf_loop
  - Utility helpers
    Utility helpers
    
    bpf_get_prandom_u32
    
    bpf_strtol
    
    bpf_strtoul
    
    bpf_strncmp
    
    bpf_d_path
  - Misc
    Misc
    
    bpf_kptr_xchg
- Syscall commands
  Syscall commands
  - Object creation commands
    Object creation commands
    
    BPF_MAP_CREATE
    
    BPF_PROG_LOAD
    
    BPF_BTF_LOAD
    
    BPF_LINK_CREATE
    
    BPF_ITER_CREATE
    
    BPF_RAW_TRACEPOINT_OPEN
  - Map commands
    Map commands
    
    BPF_MAP_CREATE
    
    BPF_MAP_LOOKUP_ELEM
    
    BPF_MAP_UPDATE_ELEM
    
    BPF_MAP_DELETE_ELEM
    
    BPF_MAP_GET_NEXT_KEY
    
    BPF_MAP_LOOKUP_BATCH
    
    BPF_MAP_LOOKUP_AND_DELETE_BATCH
    
    BPF_MAP_UPDATE_BATCH
    
    BPF_MAP_DELETE_BATCH
    
    BPF_MAP_LOOKUP_AND_DELETE_ELEM
    
    BPF_MAP_FREEZE
  - Pin commands
    Pin commands
    
    BPF_OBJ_PIN
    
    BPF_OBJ_GET
  - Program commands
    Program commands
    
    BPF_PROG_LOAD
    
    BPF_PROG_ATTACH
    
    BPF_PROG_DETACH
    
    BPF_PROG_TEST_RUN
    
    BPF_PROG_TEST_RUN
    
    BPF_PROG_BIND_MAP
  - Object discovery commands
    Object discovery commands
    
    BPF_PROG_GET_NEXT_ID
    
    BPF_MAP_GET_NEXT_ID
    
    BPF_PROG_GET_FD_BY_ID
    
    BPF_MAP_GET_FD_BY_ID
    
    BPF_OBJ_GET_INFO_BY_FD
    
    BPF_PROG_QUERY
    
    BPF_BTF_GET_FD_BY_ID
    
    BPF_TASK_FD_QUERY
    
    BPF_BTF_GET_NEXT_ID
    
    BPF_LINK_GET_FD_BY_ID
    
    BPF_LINK_GET_NEXT_ID
  - Link commands
    Link commands
    
    BPF_LINK_CREATE
    
    BPF_LINK_UPDATE
    
    BPF_LINK_DETACH
  - Statistics commands
    Statistics commands
    
    BPF_ENABLE_STATS
- KFuncs
  KFuncs
  - cGroup resource stats KFuncs
    cGroup resource stats KFuncs
    
    cgroup_rstat_updated
    
    cgroup_rstat_flush
  - Key signature verification KFuncs
    Key signature verification KFuncs
    
    bpf_lookup_user_key
    
    bpf_lookup_system_key
    
    bpf_key_put
    
    bpf_verify_pkcs7_signature
  - File related kfuncs
    File related kfuncs
    
    bpf_get_file_xattr
  - CPU mask KFuncs
    CPU mask KFuncs
    
    bpf_cpumask_create
    
    bpf_cpumask_release
    
    bpf_cpumask_acquire
    
    bpf_cpumask_first
    
    bpf_cpumask_first_zero
    
    bpf_cpumask_first_and
    
    bpf_cpumask_set_cpu
    
    bpf_cpumask_clear_cpu
    
    bpf_cpumask_test_cpu
    
    bpf_cpumask_test_and_set_cpu
    
    bpf_cpumask_test_and_clear_cpu
    
    bpf_cpumask_setall
    
    bpf_cpumask_clear
    
    bpf_cpumask_and
    
    bpf_cpumask_or
    
    bpf_cpumask_xor
    
    bpf_cpumask_equal
    
    bpf_cpumask_intersects
    
    bpf_cpumask_subset
    
    bpf_cpumask_empty
    
    bpf_cpumask_full
    
    bpf_cpumask_copy
    
    bpf_cpumask_any_distribute
    
    bpf_cpumask_any_and_distribute
    
    bpf_cpumask_weight
  - Generic KFuncs
    Generic KFuncs
    
    crash_kexec
    
    bpf_throw
  - Object allocation KFuncs
    Object allocation KFuncs
    
    bpf_obj_new_impl
    
    bpf_percpu_obj_new_impl
    
    bpf_obj_drop_impl
    
    bpf_percpu_obj_drop_impl
    
    bpf_refcount_acquire_impl
    
    bpf_list_push_front_impl
    
    bpf_list_push_back_impl
    
    bpf_list_pop_front
    
    bpf_list_pop_back
  - BPF Arena KFuncs
    BPF Arena KFuncs
    
    bpf_arena_alloc_pages
    
    bpf_arena_free_pages
  - BPF task KFuncs
    BPF task KFuncs
    
    bpf_task_acquire
    
    bpf_task_release
  - BPF cGroup KFuncs
    BPF cGroup KFuncs
    
    bpf_rbtree_add_impl
    
    bpf_rbtree_first
    
    bpf_rbtree_remove
  - Kfuncs for acquiring and releasing cGroup references
    Kfuncs for acquiring and releasing cGroup references
    
    bpf_cgroup_acquire
    
    bpf_cgroup_release
    
    bpf_cgroup_ancestor
    
    bpf_cgroup_from_id
  - Kfuncs for querying tasks
    Kfuncs for querying tasks
    
    bpf_task_under_cgroup
    
    bpf_task_get_cgroup1
    
    bpf_task_from_pid
  - Kfuncs for casting pointers
    Kfuncs for casting pointers
    
    bpf_cast_to_kern_ctx
    
    bpf_rdonly_cast
  - Kfuncs for taking and releasing RCU read locks
    Kfuncs for taking and releasing RCU read locks
    
    bpf_rcu_read_lock
    
    bpf_rcu_read_unlock
  - Kfuncs for dynamic pointer slices
    Kfuncs for dynamic pointer slices
    
    bpf_dynptr_slice
    
    bpf_dynptr_slice_rdwr
  - Kfuncs for open coded numeric iterators
    Kfuncs for open coded numeric iterators
    
    bpf_iter_num_new
    
    bpf_iter_num_next
    
    bpf_iter_num_destroy
  - Kfuncs for open coded virtual memory area iterators
    Kfuncs for open coded virtual memory area iterators
    
    bpf_iter_task_vma_new
    
    bpf_iter_task_vma_next
    
    bpf_iter_task_vma_destroy
  - Kfuncs for bits
    Kfuncs for bits
    
    bpf_iter_bits_new
    
    bpf_iter_bits_next
    
    bpf_iter_bits_destroy
  - Kfuncs for open coded task cGroup iterators
    Kfuncs for open coded task cGroup iterators
    
    bpf_iter_css_task_new
    
    bpf_iter_css_task_next
    
    bpf_iter_css_task_destroy
  - Kfuncs for open coded cGroup iterators
    Kfuncs for open coded cGroup iterators
    
    bpf_iter_css_new
    
    bpf_iter_css_next
    
    bpf_iter_css_destroy
  - Kfuncs for open coded task iterators
    Kfuncs for open coded task iterators
    
    bpf_iter_task_new
    
    bpf_iter_task_next
    
    bpf_iter_task_destroy
  - Kfuncs for dynamic pointers
    Kfuncs for dynamic pointers
    
    bpf_dynptr_adjust
    
    bpf_dynptr_is_null
    
    bpf_dynptr_is_rdonly
    
    bpf_dynptr_size
    
    bpf_dynptr_clone
  - Misc KFuncs
    Misc KFuncs
    
    bpf_map_sum_elem_count
    
    bpf_get_fsverity_digest
  - Preemption kfuncs
    Preemption kfuncs
    
    bpf_preempt_disable
    
    bpf_preempt_enable
  - Work-queue KFuncs
    Work-queue KFuncs
    
    bpf_wq_init
    
    bpf_wq_set_callback_impl
    
    bpf_wq_start
  - XDP metadata kfuncs
    XDP metadata kfuncs
    
    bpf_xdp_metadata_rx_timestamp
    
    bpf_xdp_metadata_rx_hash
    
    bpf_xdp_metadata_rx_vlan_tag
  - XDP/SKB dynamic pointer kfuncs
    XDP/SKB dynamic pointer kfuncs
    
    bpf_dynptr_from_skb
    
    bpf_dynptr_from_xdp
  - Socket related kfuncs
    Socket related kfuncs
    
    bpf_sock_addr_set_sun_path
    
    bpf_sock_destroy
  - Network crypto kfuncs
    Network crypto kfuncs
    
    bpf_crypto_ctx_create
    
    bpf_crypto_ctx_acquire
    
    bpf_crypto_ctx_release
    
    bpf_crypto_decrypt
    
    bpf_crypto_encrypt
  - BBR congestion control kfuncs
    BBR congestion control kfuncs
    
    bbr_init
    
    bbr_main
    
    bbr_sndbuf_expand
    
    bbr_undo_cwnd
    
    bbr_cwnd_event
    
    bbr_ssthresh
    
    bbr_min_tso_segs
    
    bbr_set_state
  - Cubic TCP congestion control kfuncs
    Cubic TCP congestion control kfuncs
    
    cubictcp_init
    
    cubictcp_recalc_ssthresh
    
    cubictcp_cong_avoid
    
    cubictcp_state
    
    cubictcp_cwnd_event
    
    cubictcp_acked
  - DC TCP congestion control kfuncs
    DC TCP congestion control kfuncs
    
    dctcp_init
    
    dctcp_update_alpha
    
    dctcp_cwnd_event
    
    dctcp_ssthresh
    
    dctcp_cwnd_undo
    
    dctcp_state
  - TCP Reno congestion control kfuncs
    TCP Reno congestion control kfuncs
    
    tcp_reno_ssthresh
    
    tcp_reno_cong_avoid
    
    tcp_reno_undo_cwnd
    
    tcp_slow_start
    
    tcp_cong_avoid_ai
  - Foo over UDP KFuncs
    Foo over UDP KFuncs
    
    bpf_skb_set_fou_encap
    
    bpf_skb_get_fou_encap
  - SYN Cookie KFuncs
    SYN Cookie KFuncs
    
    bpf_sk_assign_tcp_reqsk
  - Connection tracking KFuncs
    Connection tracking KFuncs
    
    bpf_ct_set_nat_info
    
    bpf_xdp_ct_alloc
    
    bpf_xdp_ct_lookup
    
    bpf_skb_ct_alloc
    
    bpf_skb_ct_lookup
    
    bpf_ct_insert_entry
    
    bpf_ct_release
    
    bpf_ct_set_timeout
    
    bpf_ct_change_timeout
    
    bpf_ct_set_status
    
    bpf_ct_change_status
  - XDP KFuncs
    XDP KFuncs
    
    bpf_xdp_flow_lookup
  - XFRM KFuncs
    XFRM KFuncs
    
    bpf_skb_get_xfrm_info
    
    bpf_skb_set_xfrm_info
    
    bpf_xdp_get_xfrm_state
    
    bpf_xdp_xfrm_state_release
  - HID Kfuncs
    HID Kfuncs
    
    hid_bpf_get_data
    
    hid_bpf_attach_prog
    
    hid_bpf_allocate_context
    
    hid_bpf_release_context
    
    hid_bpf_hw_request
    
    hid_bpf_hw_output_report
    
    hid_bpf_input_report
    
    hid_bpf_try_input_report
  - KProbe session Kfuncs
    KProbe session Kfuncs
    
    bpf_session_cookie
    
    bpf_session_is_return
- eBPF Timeline
  eBPF Timeline
eBPF libraries
eBPF libraries
- Libbpf
  Libbpf
  - Userspace
    
    Userspace
    
    Misc libbpf functions
    Misc libbpf functions
    
    libbpf_major_version
    
    libbpf_minor_version
    
    libbpf_strerror
  - eBPF side
    
    eBPF side
    
    BTF map macros / types
    BTF map macros / types
    
    __uint
    
    __type
    
    __array
    
    __ulong
    
    enum libbpf_pin_type
    
    Attributes
    Attributes
    
    __always_inline
    
    __noinline
    
    __weak
    
    __hidden
    
    __kconfig
    
    __ksym
    
    __kptr_untrusted
    
    __kptr
    
    __percpu_kptr
    
    Global function attributes
    Global function attributes
    
    __arg_ctx
    
    __arg_nonnull
    
    __arg_nullable
    
    __arg_trusted
    
    __arg_arena
    
    SEC
    
    KERNEL_VERSION
    
    offsetof
    
    container_of
    
    barrier
    
    barrier_var
    
    __bpf_unreachable
    
    bpf_tail_call_static
    
    bpf_ksym_exists
    
    Printf macros
    Printf macros
    
    BPF_SEQ_PRINTF
    
    BPF_SNPRINTF
    
    bpf_printk
    
    Open coded iterator loop macros
    Open coded iterator loop macros
    
    bpf_for_each
    
    bpf_for
    
    bpf_repeat
    
    bpf_htons
    
    bpf_ntohs
    
    bpf_htonl
    
    bpf_ntohl
    
    bpf_cpu_to_be64
    
    bpf_be64_to_cpu
    
    PT_REGS_PARM
    
    PT_REGS_RET
    
    PT_REGS_FP
    
    PT_REGS_RC
    
    PT_REGS_SP
    
    PT_REGS_IP
    
    PT_REGS_SYSCALL_REGS
    
    BPF_PROG
    
    BPF_PROG2
    
    BPF_KPROBE
    
    BPF_UPROBE
    
    BPF_KRETPROBE
    
    BPF_URETPROBE
    
    BPF_KSYSCALL
    
    BPF_KPROBE_SYSCALL
    
    CO-RE memory access
    CO-RE memory access
    
    BPF_CORE_READ
    
    BPF_CORE_READ_INTO
    
    bpf_core_read
    
    BPF_CORE_READ_STR_INTO
    
    bpf_core_read_str
    
    BPF_CORE_READ_USER
    
    BPF_CORE_READ_USER_INTO
    
    bpf_core_read_user
    
    BPF_CORE_READ_USER_STR_INTO
    
    bpf_core_read_user_str
    
    BPF_CORE_READ_BITFIELD
    
    BPF_CORE_READ_BITFIELD_PROBED
    
    BPF_CORE_WRITE_BITFIELD
    
    CO-RE queries
    CO-RE queries
    
    bpf_core_field_exists
    
    bpf_core_field_size
    
    bpf_core_field_offset
    
    bpf_core_type_id_local
    
    bpf_core_type_id_kernel
    
    bpf_core_type_exists
    
    bpf_core_type_matches
    
    bpf_core_type_size
    
    bpf_core_enum_value_exists
    
    bpf_core_enum_value
    
    bpf_core_cast
    
    Non CO-RE macros
    Non CO-RE macros
    
    BPF_PROBE_READ
    
    BPF_PROBE_READ_INTO
    
    BPF_PROBE_READ_USER_INTO
    
    BPF_PROBE_READ_STR_INTO
    
    BPF_PROBE_READ_USER_STR_INTO
    
    BPF_PROBE_READ_USER
  - Concepts
- Libxdp
  Libxdp
  - Concept
  - Manage programs
    Manage programs
    
    Load
    Load
    
    xdp_program__from_bpf_obj
    
    xdp_program__find_file
    
    xdp_program__open_file
    
    xdp_program__from_fd
    
    xdp_program__from_id
    
    xdp_program__from_pin
    
    Metadata
    Metadata
    
    xdp_program__run_prio
    
    xdp_program__set_run_prio
    
    xdp_program__chain_call_enabled
    
    xdp_program__set_chain_call_enabled
    
    xdp_program__print_chain_call_actions
    
    Dispatcher
    Dispatcher
    
    xdp_multiprog__get_from_ifindex
    
    xdp_multiprog__next_prog
    
    xdp_multiprog__close
    
    xdp_multiprog__detach
    
    xdp_multiprog__attach_mode
    
    xdp_multiprog__main_prog
    
    xdp_multiprog__hw_prog
    
    xdp_multiprog__is_legacy
  - AF_XDP sockets
    AF_XDP sockets
    
    Control path
    Control path
    
    Umem Area
    Umem Area
    
    xsk_umem__create
    
    xsk_umem__create_with_fd
    
    xsk_umem__delete
    
    xsk_umem__fd
    
    xsk_umem__get_data
    
    xsk_umem__extract_addr
    
    xsk_umem__extract_offset
    
    xsk_umem__add_offset_to_addr
    
    Sockets
    Sockets
    
    xsk_socket__create
    
    xsk_socket__create_shared
    
    xsk_socket__delete
    
    xsk_socket__fd
    
    xsk_setup_xdp_prog
    
    xsk_socket__update_xskmap
    
    Data path
    Data path
    
    Producer rings
    Producer rings
    
    xsk_ring_prod__reserve
    
    xsk_ring_prod__submit
    
    xsk_ring_prod__fill_addr
    
    xsk_ring_prod__tx_desc
    
    xsk_ring_prod__needs_wakeup
    
    Consumer rings
    Consumer rings
    
    xsk_ring_cons__peek
    
    xsk_ring_cons__cancel
    
    xsk_ring_cons__release
    
    xsk_ring_cons__comp_addr
    
    xsk_ring_cons__rx_desc
Concepts
Concepts
- BPF CO-RE
- BTF
- ELF
FAQ

Instruction set

Docs could be improved

This part of the docs is incomplete, contributions are very welcome

December 20, 2024 December 20, 2024 GitHub

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