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eBPF Docs
Syscall command 'BPF_ITER_CREATE'
Initializing search
GitHub
eBPF Docs
GitHub
Home
Linux Reference
Linux Reference
Concepts
Concepts
Maps
Verifier
Functions
Concurrency
Pinning
Tail calls
Loops
Timers
Resource Limit
AF_XDP
KFuncs
Dynptrs
Token
Trampolines
USDT
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_STRUCT_OPS
Program Type 'BPF_PROG_TYPE_STRUCT_OPS'
struct tcp_congestion_ops
struct hid_bpf_ops
struct sched_ext_ops
struct Qdisc_ops
struct smc_hs_ctrl_ops
struct io_uring_bpf_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
BPF_MAP_TYPE_INSN_ARRAY
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
Security commands
Security commands
BPF_TOKEN_CREATE
KFuncs
KFuncs
cGroup resource stats KFuncs
cGroup resource stats KFuncs
cgroup_rstat_updated
cgroup_rstat_flush
css_rstat_updated
css_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
bpf_get_task_exe_file
bpf_put_file
bpf_path_d_path
bpf_get_dentry_xattr
bpf_remove_dentry_xattr
bpf_set_dentry_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
bpf_cpumask_populate
Generic KFuncs
Generic KFuncs
crash_kexec
bpf_throw
Object allocation KFuncs
Object allocation KFuncs
bpf_obj_new_impl
bpf_obj_new
bpf_percpu_obj_new_impl
bpf_percpu_obj_new
bpf_obj_drop_impl
bpf_obj_drop
bpf_percpu_obj_drop_impl
bpf_percpu_obj_drop
bpf_refcount_acquire_impl
bpf_refcount_acquire
bpf_list_push_front_impl
bpf_list_push_front
bpf_list_push_back_impl
bpf_list_push_back
bpf_list_pop_front
bpf_list_pop_back
bpf_list_back
bpf_list_front
BPF Arena KFuncs
BPF Arena KFuncs
bpf_arena_alloc_pages
bpf_arena_free_pages
bpf_arena_reserve_pages
BPF task KFuncs
BPF task KFuncs
bpf_task_acquire
bpf_task_release
bpf_send_signal_task
BPF Red-Black-tree KFuncs
BPF Red-Black-tree KFuncs
bpf_rbtree_add_impl
bpf_rbtree_add
bpf_rbtree_first
bpf_rbtree_remove
bpf_rbtree_left
bpf_rbtree_right
bpf_rbtree_root
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
bpf_task_from_vpid
KFuncs for memory allocator inspection
KFuncs for memory allocator inspection
bpf_get_kmem_cache
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
Open coded iterator
Open coded iterator
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 slab memory allocation iterators
Kfuncs for slab memory allocation iterators
bpf_iter_kmem_cache_new
bpf_iter_kmem_cache_next
bpf_iter_kmem_cache_destroy
Kfuncs for sched_ext dispatch queue iterators
Kfuncs for sched_ext dispatch queue iterators
bpf_iter_scx_dsq_new
bpf_iter_scx_dsq_next
bpf_iter_scx_dsq_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
bpf_dynptr_copy
bpf_dynptr_memset
Kfuncs for DMA buffer iterators
Kfuncs for DMA buffer iterators
bpf_iter_dmabuf_new
bpf_iter_dmabuf_next
bpf_iter_dmabuf_destroy
Misc KFuncs
Misc KFuncs
bpf_map_sum_elem_count
bpf_get_fsverity_digest
__bpf_trap
Timer KFuncs
Timer KFuncs
bpf_timer_cancel_async
Preemption kfuncs
Preemption kfuncs
bpf_preempt_disable
bpf_preempt_enable
Work-queue KFuncs
Work-queue KFuncs
bpf_wq_init
bpf_wq_set_callback
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
bpf_dynptr_from_skb_meta
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_cwnd_event_tx_start
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_cwnd_event_tx_start
cubictcp_acked
DC TCP congestion control kfuncs
DC TCP congestion control kfuncs
dctcp_init
dctcp_update_alpha
dctcp_cwnd_event
dctcp_cwnd_event_tx_start
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
bpf_xdp_pull_data
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
Memory probe Kfuncs
Memory probe Kfuncs
bpf_copy_from_user_str
bpf_copy_from_user_task_str
IRQ Kfuncs
IRQ Kfuncs
bpf_local_irq_save
bpf_local_irq_restore
sched_ext Kfuncs
sched_ext Kfuncs
scx_bpf_kick_cpu
scx_bpf_select_cpu_dfl
scx_bpf_select_cpu_and
__scx_bpf_select_cpu_and
scx_bpf_cpu_rq
scx_bpf_now
scx_bpf_cpu_curr
scx_bpf_locked_rq
Dispatch Queue Kfuncs
Dispatch Queue Kfuncs
scx_bpf_create_dsq
scx_bpf_destroy_dsq
scx_bpf_dsq_nr_queued
scx_bpf_dsq_insert
scx_bpf_dsq_insert___v2
scx_bpf_dispatch
scx_bpf_dsq_insert_vtime
scx_bpf_dispatch_vtime
scx_bpf_dsq_move_to_local
scx_bpf_dsq_move_to_local___v2
scx_bpf_consume
scx_bpf_dsq_move_set_slice
scx_bpf_dispatch_from_dsq_set_slice
scx_bpf_dsq_move_set_vtime
scx_bpf_dispatch_from_dsq_set_vtime
scx_bpf_dsq_move
scx_bpf_dispatch_from_dsq
scx_bpf_dsq_move_vtime
scx_bpf_dispatch_vtime_from_dsq
scx_bpf_reenqueue_local
scx_bpf_reenqueue_local___v2
scx_bpf_dsq_peek
scx_bpf_dsq_reenq
scx_bpf_sub_dispatch
Dispatch Kfuncs
Dispatch Kfuncs
scx_bpf_dispatch_nr_slots
scx_bpf_dispatch_cancel
Error and debug Kfuncs
Error and debug Kfuncs
scx_bpf_exit_bstr
scx_bpf_error_bstr
scx_bpf_dump_bstr
CPU performance Kfuncs
CPU performance Kfuncs
scx_bpf_cpuperf_cap
scx_bpf_cpuperf_cur
scx_bpf_cpuperf_set
scx_bpf_nr_cpu_ids
CPU mask Kfuncs
CPU mask Kfuncs
scx_bpf_get_possible_cpumask
scx_bpf_get_online_cpumask
scx_bpf_put_cpumask
Idle CPU mask Kfuncs
Idle CPU mask Kfuncs
scx_bpf_get_idle_cpumask
scx_bpf_get_idle_smtmask
scx_bpf_put_idle_cpumask
scx_bpf_test_and_clear_cpu_idle
scx_bpf_pick_idle_cpu
scx_bpf_pick_any_cpu
Task Kfuncs
Task Kfuncs
scx_bpf_task_running
scx_bpf_task_cpu
scx_bpf_task_cgroup
scx_bpf_task_set_slice
scx_bpf_task_set_dsq_vtime
NUMA Kfuncs
NUMA Kfuncs
scx_bpf_cpu_node
scx_bpf_nr_node_ids
scx_bpf_pick_any_cpu_node
scx_bpf_pick_idle_cpu_node
Resilient Queued spinlock Kfuncs
Resilient Queued spinlock Kfuncs
bpf_res_spin_lock
bpf_res_spin_lock_irqsave
bpf_res_spin_unlock
bpf_res_spin_unlock_irqrestore
Sock ops Kfuncs
Sock ops Kfuncs
bpf_sock_ops_enable_tx_tstamp
Memory probe to dynptr Kfuncs
Memory probe to dynptr Kfuncs
bpf_probe_read_user_dynptr
bpf_probe_read_kernel_dynptr
bpf_probe_read_user_str_dynptr
bpf_probe_read_kernel_str_dynptr
bpf_copy_from_user_dynptr
bpf_copy_from_user_str_dynptr
bpf_copy_from_user_task_dynptr
bpf_copy_from_user_task_str_dynptr
File dynptr Kfuncs
File dynptr Kfuncs
bpf_dynptr_from_file
bpf_dynptr_file_discard
BPF Qdisc kfuncs
BPF Qdisc kfuncs
bpf_kfree_skb
bpf_qdisc_bstats_update
bpf_qdisc_init_prologue
bpf_qdisc_reset_destroy_epilogue
bpf_qdisc_skb_drop
bpf_qdisc_watchdog_schedule
bpf_skb_get_hash
String Kfuncs
String Kfuncs
bpf_strchr
bpf_strchrnul
bpf_strcmp
bpf_strcspn
bpf_strlen
bpf_strnchr
bpf_strncasecmp
bpf_strnlen
bpf_strnstr
bpf_strrchr
bpf_strspn
bpf_strstr
bpf_strcasecmp
bpf_strcasestr
bpf_strncasestr
Debug stream Kfuncs
Debug stream Kfuncs
bpf_stream_print_stack
bpf_stream_vprintk
bpf_stream_vprintk_impl
CGroup xattr Kfuncs
CGroup xattr Kfuncs
bpf_cgroup_read_xattr
Task work schedule Kfuncs
Task work schedule Kfuncs
bpf_task_work_schedule_resume
bpf_task_work_schedule_signal
bpf_task_work_schedule_resume_impl
bpf_task_work_schedule_signal_impl
I/O Userspace Ring kfuncs
I/O Userspace Ring kfuncs
bpf_io_uring_get_region
bpf_io_uring_submit_sqes
eBPF Timeline
eBPF Timeline
eBPF libraries
eBPF libraries
Libbpf
Libbpf
Userspace
Userspace
BPF Object functions
BPF Object functions
bpf_object__open
bpf_object__open_file
bpf_object__open_mem
bpf_object__load
bpf_object__close
bpf_object__pin_maps
bpf_object__unpin_maps
bpf_object__pin_programs
bpf_object__unpin_programs
bpf_object__pin
bpf_object__unpin
bpf_object__name
bpf_object__kversion
bpf_object__set_kversion
bpf_object__token_fd
bpf_object__btf
bpf_object__btf_fd
bpf_object__find_program_by_name
BPF Skeleton functions
BPF Skeleton functions
bpf_object__open_skeleton
bpf_object__load_skeleton
bpf_object__attach_skeleton
bpf_object__detach_skeleton
bpf_object__destroy_skeleton
bpf_object__open_subskeleton
bpf_object__destroy_subskeleton
bpf_object__gen_loader
bpf_object__next_program
bpf_object__prev_program
bpf_object__find_map_by_name
bpf_object__find_map_fd_by_name
bpf_object__next_map
bpf_object__prev_map
BPF Program functions
BPF Program functions
bpf_program__set_ifindex
bpf_program__name
bpf_program__section_name
bpf_program__autoload
bpf_program__set_autoload
bpf_program__autoattach
bpf_program__set_autoattach
bpf_program__insns
bpf_program__set_insns
bpf_program__insn_cnt
bpf_program__fd
bpf_program__pin
bpf_program__unpin
bpf_program__unload
Program attach functions
Program attach functions
bpf_program__attach
bpf_program__attach_perf_event
bpf_program__attach_perf_event_opts
bpf_program__attach_kprobe
bpf_program__attach_kprobe_opts
bpf_program__attach_kprobe_multi_opts
bpf_program__attach_uprobe_multi
bpf_program__attach_ksyscall
bpf_program__attach_uprobe
bpf_program__attach_uprobe_opts
bpf_program__attach_usdt
bpf_program__attach_tracepoint
bpf_program__attach_tracepoint_opts
bpf_program__attach_raw_tracepoint
bpf_program__attach_raw_tracepoint_opts
bpf_program__attach_trace
bpf_program__attach_trace_opts
bpf_program__attach_lsm
bpf_program__attach_cgroup
bpf_program__attach_netns
bpf_program__attach_sockmap
bpf_program__attach_xdp
bpf_program__attach_freplace
bpf_program__attach_netfilter
bpf_program__attach_tcx
bpf_program__attach_netkit
bpf_program__attach_iter
bpf_program__type
bpf_program__set_type
bpf_program__set_expected_attach_type
bpf_program__flags
bpf_program__set_flags
bpf_program__log_level
bpf_program__set_log_level
bpf_program__log_buf
bpf_program__set_log_buf
bpf_program__set_attach_target
bpf_program__expected_attach_type
Link functions
Link functions
bpf_link__open
bpf_link__fd
bpf_link__pin_path
bpf_link__pin
bpf_link__unpin
bpf_link__update_program
bpf_link__disconnect
bpf_link__detach
bpf_link__destroy
bpf_link__update_map
Map functions
Map functions
bpf_map__attach_struct_ops
bpf_map__set_autocreate
bpf_map__autocreate
bpf_map__set_autoattach
bpf_map__autoattach
bpf_map__fd
bpf_map__reuse_fd
bpf_map__name
bpf_map__type
bpf_map__set_type
bpf_map__max_entries
bpf_map__set_max_entries
bpf_map__map_flags
bpf_map__set_map_flags
bpf_map__numa_node
bpf_map__set_numa_node
bpf_map__key_size
bpf_map__set_key_size
bpf_map__value_size
bpf_map__set_value_size
bpf_map__btf_key_type_id
bpf_map__btf_value_type_id
bpf_map__ifindex
bpf_map__set_ifindex
bpf_map__map_extra
bpf_map__set_map_extra
bpf_map__set_initial_value
bpf_map__initial_value
bpf_map__is_internal
bpf_map__set_pin_path
bpf_map__pin_path
bpf_map__is_pinned
bpf_map__pin
bpf_map__unpin
bpf_map__set_inner_map_fd
bpf_map__inner_map
bpf_map__lookup_elem
bpf_map__update_elem
bpf_map__delete_elem
bpf_map__lookup_and_delete_elem
bpf_map__get_next_key
XDP functions
XDP functions
bpf_xdp_attach
bpf_xdp_detach
bpf_xdp_query
bpf_xdp_query_id
TC functions
TC functions
bpf_tc_hook_create
bpf_tc_hook_destroy
bpf_tc_attach
bpf_tc_detach
bpf_tc_query
Ring buffer manager functions
Ring buffer manager functions
ring_buffer__new
ring_buffer__free
ring_buffer__add
ring_buffer__poll
ring_buffer__consume
ring_buffer__consume_n
ring_buffer__epoll_fd
ring_buffer__ring
Ring buffer functions
Ring buffer functions
ring__consumer_pos
ring__producer_pos
ring__avail_data_size
ring__size
ring__map_fd
ring__consume
ring__consume_n
User ring buffer
User ring buffer
user_ring_buffer__new
user_ring_buffer__reserve
user_ring_buffer__reserve_blocking
user_ring_buffer__submit
user_ring_buffer__discard
user_ring_buffer__free
Perf buffer functions
Perf buffer functions
perf_buffer__new
perf_buffer__new_raw
perf_buffer__free
perf_buffer__epoll_fd
perf_buffer__poll
perf_buffer__consume
perf_buffer__consume_buffer
perf_buffer__buffer_cnt
perf_buffer__buffer_fd
perf_buffer__buffer
Program line info functions
Program line info functions
bpf_prog_linfo__free
bpf_prog_linfo__new
bpf_prog_linfo__lfind_addr_func
bpf_prog_linfo__lfind
Linker functions
Linker functions
bpf_linker__new
bpf_linker__new_fd
bpf_linker__add_file
bpf_linker__add_fd
bpf_linker__add_buf
bpf_linker__finalize
bpf_linker__free
Misc libbpf functions
Misc libbpf functions
libbpf_major_version
libbpf_minor_version
libbpf_version_string
libbpf_strerror
libbpf_bpf_attach_type_str
libbpf_bpf_link_type_str
libbpf_bpf_map_type_str
libbpf_bpf_prog_type_str
libbpf_set_print
libbpf_prog_type_by_name
libbpf_attach_type_by_name
libbpf_find_vmlinux_btf_id
libbpf_probe_bpf_prog_type
libbpf_probe_bpf_map_type
libbpf_probe_bpf_helper
libbpf_num_possible_cpus
libbpf_register_prog_handler
libbpf_unregister_prog_handler
Legacy APIs
Legacy APIs
libbpf_set_strict_mode
libbpf_get_error
libbpf_find_kernel_btf
bpf_program__get_type
bpf_program__get_expected_attach_type
bpf_map__get_pin_path
btf__get_raw_data
btf_ext__get_raw_data
Types
Types
struct libbpf_prog_handler_opts
BTF
BTF
btf__free
btf__new
btf__new_split
btf__new_empty
btf__new_empty_split
btf__distill_base
btf__parse
btf__parse_split
btf__parse_elf
btf__parse_elf_split
btf__parse_raw
btf__parse_raw_split
btf__load_vmlinux_btf
btf__load_module_btf
btf__load_from_kernel_by_id
btf__load_from_kernel_by_id_split
btf__load_into_kernel
btf__find_by_name
btf__find_by_name_kind
btf__type_cnt
btf__base_btf
btf__type_by_id
btf__pointer_size
btf__set_pointer_size
btf__endianness
btf__set_endianness
btf__resolve_size
btf__resolve_type
btf__align_of
btf__fd
btf__set_fd
btf__raw_data
btf__name_by_offset
btf__str_by_offset
btf_ext__new
btf_ext__free
btf_ext__raw_data
btf_ext__endianness
btf_ext__set_endianness
btf__find_str
btf__add_str
btf__add_type
btf__add_btf
btf__add_int
btf__add_float
btf__add_ptr
btf__add_array
btf__add_struct
btf__add_union
btf__add_field
btf__add_enum
btf__add_enum_value
btf__add_enum64
btf__add_enum64_value
btf__add_fwd
btf__add_typedef
btf__add_volatile
btf__add_const
btf__add_restrict
btf__add_type_tag
btf__add_type_attr
btf__add_func
btf__add_func_proto
btf__add_func_param
btf__add_var
btf__add_datasec
btf__add_datasec_var_info
btf__add_decl_tag
btf__add_decl_attr
btf__dedup
btf__relocate
btf_dump__new
btf_dump__free
btf_dump__dump_type
btf_dump__emit_type_decl
btf_dump__dump_type_data
Low level APIs
Low level APIs
libbpf_set_memlock_rlim
bpf_map_create
bpf_prog_load
bpf_btf_load
bpf_map_update_elem
bpf_map_lookup_elem
bpf_map_lookup_elem_flags
bpf_map_lookup_and_delete_elem
bpf_map_lookup_and_delete_elem_flags
bpf_map_delete_elem
bpf_map_delete_elem_flags
bpf_map_get_next_key
bpf_map_freeze
bpf_map_delete_batch
bpf_map_lookup_batch
bpf_map_lookup_and_delete_batch
bpf_map_update_batch
bpf_obj_pin
bpf_obj_pin_opts
bpf_obj_get
bpf_obj_get_opts
bpf_prog_attach
bpf_prog_detach
bpf_prog_detach2
bpf_prog_attach_opts
bpf_prog_detach_opts
bpf_link_create
bpf_link_detach
bpf_link_update
bpf_iter_create
bpf_prog_get_next_id
bpf_map_get_next_id
bpf_btf_get_next_id
bpf_link_get_next_id
bpf_prog_get_fd_by_id
bpf_prog_get_fd_by_id_opts
bpf_map_get_fd_by_id
bpf_map_get_fd_by_id_opts
bpf_btf_get_fd_by_id
bpf_btf_get_fd_by_id_opts
bpf_link_get_fd_by_id
bpf_link_get_fd_by_id_opts
bpf_obj_get_info_by_fd
bpf_prog_get_info_by_fd
bpf_map_get_info_by_fd
bpf_btf_get_info_by_fd
bpf_link_get_info_by_fd
bpf_prog_query_opts
bpf_prog_query
bpf_raw_tracepoint_open_opts
bpf_raw_tracepoint_open
bpf_task_fd_query
bpf_enable_stats
bpf_prog_bind_map
bpf_prog_test_run_opts
bpf_token_create
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_PARM_SYSCALL
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
Utility macros
Utility macros
___bpf_fill
USDT macros
USDT macros
BPF_USDT
bpf_usdt_arg_cnt
bpf_usdt_arg_size
bpf_usdt_arg
bpf_usdt_cookie
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
SCX Common
SCX Common
BPF_FOR_EACH_ITER
scx_bpf_bstr_preamble
scx_bpf_exit
scx_bpf_error
scx_bpf_dump
BPF_STRUCT_OPS
BPF_STRUCT_OPS_SLEEPABLE
RESIZABLE_ARRAY
ARRAY_ELEM_PTR
MEMBER_VPTR
__contains
private
bpf_obj_new
bpf_obj_drop
bpf_rbtree_add
bpf_refcount_acquire
cast_mask
likely
unlikely
READ_ONCE
WRITE_ONCE
log2_u32
log2_u64
__COMPAT_ENUM_OR_ZERO
__COMPAT_scx_bpf_task_cgroup
scx_bpf_dsq_insert
scx_bpf_dsq_insert_vtime
scx_bpf_dsq_move_to_local
__COMPAT_scx_bpf_dsq_move_set_slice
__COMPAT_scx_bpf_dsq_move_set_vtime
__COMPAT_scx_bpf_dsq_move
__COMPAT_scx_bpf_dsq_move_vtime
SCX_OPS_DEFINE
scx_bpf_reenqueue_local
scx_bpf_select_cpu_and
Concepts
Concepts
BPF CO-RE
BTF
ELF
Meta docs
FAQ
BPF Syscall
BPF_ITER_CREATE
command
v5.8
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