tcp_sock struct fast path usage breakdown¶
Type |
Name |
fastpath_tx_access |
fastpath_rx_access |
Comments |
|---|---|---|---|---|
struct inet_connection_sock |
inet_conn |
|||
u16 |
tcp_header_len |
read_mostly |
read_mostly |
tcp_bound_to_half_wnd,tcp_current_mss(tx);tcp_rcv_established(rx) |
u16 |
gso_segs |
read_mostly |
tcp_xmit_size_goal |
|
__be32 |
pred_flags |
read_write |
read_mostly |
tcp_select_window(tx);tcp_rcv_established(rx) |
u64 |
bytes_received |
read_write |
tcp_rcv_nxt_update(rx) |
|
u32 |
segs_in |
read_write |
tcp_v6_rcv(rx) |
|
u32 |
data_segs_in |
read_write |
tcp_v6_rcv(rx) |
|
u32 |
rcv_nxt |
read_mostly |
read_write |
tcp_cleanup_rbuf,tcp_send_ack,tcp_inq_hint,tcp_transmit_skb,tcp_receive_window(tx);tcp_v6_do_rcv,tcp_rcv_established,tcp_data_queue,tcp_receive_window,tcp_rcv_nxt_update(write)(rx) |
u32 |
copied_seq |
read_mostly |
tcp_cleanup_rbuf,tcp_rcv_space_adjust,tcp_inq_hint |
|
u32 |
rcv_wup |
read_write |
__tcp_cleanup_rbuf,tcp_receive_window,tcp_receive_established |
|
u32 |
snd_nxt |
read_write |
read_mostly |
tcp_rate_check_app_limited,__tcp_transmit_skb,tcp_event_new_data_sent(write)(tx);tcp_rcv_established,tcp_ack,tcp_clean_rtx_queue(rx) |
u32 |
segs_out |
read_write |
__tcp_transmit_skb |
|
u32 |
data_segs_out |
read_write |
__tcp_transmit_skb,tcp_update_skb_after_send |
|
u64 |
bytes_sent |
read_write |
__tcp_transmit_skb |
|
u64 |
bytes_acked |
read_write |
tcp_snd_una_update/tcp_ack |
|
u32 |
dsack_dups |
|||
u32 |
snd_una |
read_mostly |
read_write |
tcp_wnd_end,tcp_urg_mode,tcp_minshall_check,tcp_cwnd_validate(tx);tcp_ack,tcp_may_update_window,tcp_clean_rtx_queue(write),tcp_ack_tstamp(rx) |
u32 |
snd_sml |
read_write |
tcp_minshall_check,tcp_minshall_update |
|
u32 |
rcv_tstamp |
read_mostly |
tcp_ack |
|
u32 |
lsndtime |
read_write |
tcp_slow_start_after_idle_check,tcp_event_data_sent |
|
u32 |
last_oow_ack_time |
|||
u32 |
compressed_ack_rcv_nxt |
|||
u32 |
tsoffset |
read_mostly |
read_mostly |
tcp_established_options(tx);tcp_fast_parse_options(rx) |
struct list_head |
tsq_node |
|||
struct list_head |
tsorted_sent_queue |
read_write |
tcp_update_skb_after_send |
|
u32 |
snd_wl1 |
read_mostly |
tcp_may_update_window |
|
u32 |
snd_wnd |
read_mostly |
read_mostly |
tcp_wnd_end,tcp_tso_should_defer(tx);tcp_fast_path_on(rx) |
u32 |
max_window |
read_mostly |
tcp_bound_to_half_wnd,forced_push |
|
u32 |
mss_cache |
read_mostly |
read_mostly |
tcp_rate_check_app_limited,tcp_current_mss,tcp_sync_mss,tcp_sndbuf_expand,tcp_tso_should_defer(tx);tcp_update_pacing_rate,tcp_clean_rtx_queue(rx) |
u32 |
window_clamp |
read_mostly |
read_write |
tcp_rcv_space_adjust,__tcp_select_window |
u32 |
rcv_ssthresh |
read_mostly |
__tcp_select_window |
|
u8 |
scaling_ratio |
read_mostly |
read_mostly |
tcp_win_from_space |
struct |
tcp_rack |
|||
u16 |
advmss |
read_mostly |
tcp_rcv_space_adjust |
|
u8 |
compressed_ack |
|||
u8:2 |
dup_ack_counter |
|||
u8:1 |
tlp_retrans |
|||
u8:1 |
tcp_usec_ts |
read_mostly |
read_mostly |
|
u32 |
chrono_start |
read_write |
tcp_chrono_start/stop(tcp_write_xmit,tcp_cwnd_validate,tcp_send_syn_data) |
|
u32[3] |
chrono_stat |
read_write |
tcp_chrono_start/stop(tcp_write_xmit,tcp_cwnd_validate,tcp_send_syn_data) |
|
u8:2 |
chrono_type |
read_write |
tcp_chrono_start/stop(tcp_write_xmit,tcp_cwnd_validate,tcp_send_syn_data) |
|
u8:1 |
rate_app_limited |
read_write |
tcp_rate_gen |
|
u8:1 |
fastopen_connect |
|||
u8:1 |
fastopen_no_cookie |
|||
u8:1 |
is_sack_reneg |
read_mostly |
tcp_skb_entail,tcp_ack |
|
u8:2 |
fastopen_client_fail |
|||
u8:4 |
nonagle |
read_write |
tcp_skb_entail,tcp_push_pending_frames |
|
u8:1 |
thin_lto |
|||
u8:1 |
recvmsg_inq |
|||
u8:1 |
repair |
read_mostly |
tcp_write_xmit |
|
u8:1 |
frto |
|||
u8 |
repair_queue |
|||
u8:2 |
save_syn |
|||
u8:1 |
syn_data |
|||
u8:1 |
syn_fastopen |
|||
u8:1 |
syn_fastopen_exp |
|||
u8:1 |
syn_fastopen_ch |
|||
u8:1 |
syn_data_acked |
|||
u8:1 |
is_cwnd_limited |
read_mostly |
tcp_cwnd_validate,tcp_is_cwnd_limited |
|
u32 |
tlp_high_seq |
read_mostly |
tcp_ack |
|
u32 |
tcp_tx_delay |
|||
u64 |
tcp_wstamp_ns |
read_write |
tcp_pacing_check,tcp_tso_should_defer,tcp_update_skb_after_send |
|
u64 |
tcp_clock_cache |
read_write |
read_write |
tcp_mstamp_refresh(tcp_write_xmit/tcp_rcv_space_adjust),__tcp_transmit_skb,tcp_tso_should_defer;timer |
u64 |
tcp_mstamp |
read_write |
read_write |
tcp_mstamp_refresh(tcp_write_xmit/tcp_rcv_space_adjust)(tx);tcp_rcv_space_adjust,tcp_rate_gen,tcp_clean_rtx_queue,tcp_ack_update_rtt/tcp_time_stamp(rx);timer |
u32 |
srtt_us |
read_mostly |
read_write |
tcp_tso_should_defer(tx);tcp_update_pacing_rate,__tcp_set_rto,tcp_rtt_estimator(rx) |
u32 |
mdev_us |
read_write |
tcp_rtt_estimator |
|
u32 |
mdev_max_us |
|||
u32 |
rttvar_us |
read_mostly |
__tcp_set_rto |
|
u32 |
rtt_seq |
read_write |
tcp_rtt_estimator |
|
struct minmax |
rtt_min |
read_mostly |
tcp_min_rtt/tcp_rate_gen,tcp_min_rtttcp_update_rtt_min |
|
u32 |
packets_out |
read_write |
read_write |
tcp_packets_in_flight(tx/rx);tcp_slow_start_after_idle_check,tcp_nagle_check,tcp_rate_skb_sent,tcp_event_new_data_sent,tcp_cwnd_validate,tcp_write_xmit(tx);tcp_ack,tcp_clean_rtx_queue,tcp_update_pacing_rate(rx) |
u32 |
retrans_out |
read_mostly |
tcp_packets_in_flight,tcp_rate_check_app_limited |
|
u32 |
max_packets_out |
read_write |
tcp_cwnd_validate |
|
u32 |
cwnd_usage_seq |
read_write |
tcp_cwnd_validate |
|
u16 |
urg_data |
read_mostly |
tcp_fast_path_check |
|
u8 |
ecn_flags |
read_write |
tcp_ecn_send |
|
u8 |
keepalive_probes |
|||
u32 |
reordering |
read_mostly |
tcp_sndbuf_expand |
|
u32 |
reord_seen |
|||
u32 |
snd_up |
read_write |
read_mostly |
tcp_mark_urg,tcp_urg_mode,__tcp_transmit_skb(tx);tcp_clean_rtx_queue(rx) |
struct tcp_options_received |
rx_opt |
read_mostly |
read_write |
tcp_established_options(tx);tcp_fast_path_on,tcp_ack_update_window,tcp_is_sack,tcp_data_queue,tcp_rcv_established,tcp_ack_update_rtt(rx) |
u32 |
snd_ssthresh |
read_mostly |
tcp_update_pacing_rate |
|
u32 |
snd_cwnd |
read_mostly |
read_mostly |
tcp_snd_cwnd,tcp_rate_check_app_limited,tcp_tso_should_defer(tx);tcp_update_pacing_rate |
u32 |
snd_cwnd_cnt |
|||
u32 |
snd_cwnd_clamp |
|||
u32 |
snd_cwnd_used |
|||
u32 |
snd_cwnd_stamp |
|||
u32 |
prior_cwnd |
|||
u32 |
prr_delivered |
|||
u32 |
prr_out |
read_mostly |
read_mostly |
tcp_rate_skb_sent,tcp_newly_delivered(tx);tcp_ack,tcp_rate_gen,tcp_clean_rtx_queue(rx) |
u32 |
delivered |
read_mostly |
read_write |
tcp_rate_skb_sent, tcp_newly_delivered(tx);tcp_ack, tcp_rate_gen, tcp_clean_rtx_queue (rx) |
u32 |
delivered_ce |
read_mostly |
read_write |
tcp_rate_skb_sent(tx);tcp_rate_gen(rx) |
u32 |
lost |
read_mostly |
tcp_ack |
|
u32 |
app_limited |
read_write |
read_mostly |
tcp_rate_check_app_limited,tcp_rate_skb_sent(tx);tcp_rate_gen(rx) |
u64 |
first_tx_mstamp |
read_write |
tcp_rate_skb_sent |
|
u64 |
delivered_mstamp |
read_write |
tcp_rate_skb_sent |
|
u32 |
rate_delivered |
read_mostly |
tcp_rate_gen |
|
u32 |
rate_interval_us |
read_mostly |
rate_delivered,rate_app_limited |
|
u32 |
rcv_wnd |
read_write |
read_mostly |
tcp_select_window,tcp_receive_window,tcp_fast_path_check |
u32 |
write_seq |
read_write |
tcp_rate_check_app_limited,tcp_write_queue_empty,tcp_skb_entail,forced_push,tcp_mark_push |
|
u32 |
notsent_lowat |
read_mostly |
tcp_stream_memory_free |
|
u32 |
pushed_seq |
read_write |
tcp_mark_push,forced_push |
|
u32 |
lost_out |
read_mostly |
read_mostly |
tcp_left_out(tx);tcp_packets_in_flight(tx/rx);tcp_rate_check_app_limited(rx) |
u32 |
sacked_out |
read_mostly |
read_mostly |
tcp_left_out(tx);tcp_packets_in_flight(tx/rx);tcp_clean_rtx_queue(rx) |
struct hrtimer |
pacing_timer |
|||
struct hrtimer |
compressed_ack_timer |
|||
lost_skb_hint |
read_mostly |
tcp_clean_rtx_queue |
||
retransmit_skb_hint |
read_mostly |
tcp_clean_rtx_queue |
||
struct rb_root |
out_of_order_queue |
read_mostly |
tcp_data_queue,tcp_fast_path_check |
|
ooo_last_skb |
||||
struct tcp_sack_block[1] |
duplicate_sack |
|||
struct tcp_sack_block[4] |
selective_acks |
|||
struct tcp_sack_block[4] |
recv_sack_cache |
|||
highest_sack |
read_write |
tcp_event_new_data_sent |
||
int |
lost_cnt_hint |
|||
u32 |
prior_ssthresh |
|||
u32 |
high_seq |
|||
u32 |
retrans_stamp |
|||
u32 |
undo_marker |
|||
int |
undo_retrans |
|||
u64 |
bytes_retrans |
|||
u32 |
total_retrans |
|||
u32 |
rto_stamp |
|||
u16 |
total_rto |
|||
u16 |
total_rto_recoveries |
|||
u32 |
total_rto_time |
|||
u32 |
urg_seq |
|||
unsigned_int |
keepalive_time |
|||
unsigned_int |
keepalive_intvl |
|||
int |
linger2 |
|||
u8 |
bpf_sock_ops_cb_flags |
|||
u8:1 |
bpf_chg_cc_inprogress |
|||
u16 |
timeout_rehash |
|||
u32 |
rcv_ooopack |
|||
u32 |
rcv_rtt_last_tsecr |
|||
struct |
rcv_rtt_est |
read_write |
tcp_rcv_space_adjust,tcp_rcv_established |
|
struct |
rcvq_space |
read_write |
tcp_rcv_space_adjust |
|
struct |
mtu_probe |
|||
u32 |
plb_rehash |
|||
u32 |
mtu_info |
|||
bool |
is_mptcp |
|||
bool |
smc_hs_congested |
|||
bool |
syn_smc |
|||
struct tcp_sock_af_ops* |
af_specific |
|||
struct tcp_md5sig_info* |
md5sig_info |
|||
struct tcp_fastopen_request* |
fastopen_req |
|||
struct request_sock* |
fastopen_rsk |
|||
struct saved_syn* |
saved_syn |