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- .. SPDX-License-Identifier: GPL-2.0
- .. Copyright (C) 2023 Google LLC
- =========================================
- 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_write read_write tcp_ack
- void * tcp_clean_acked 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 read_mostly tcp_recvmsg
- 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 received_ce read_mostly read_write
- u32[3] received_ecn_bytes read_mostly read_write
- u8:4 received_ce_pending read_mostly read_write
- u32[3] delivered_ecn_bytes read_write
- u16 pkts_acked_ewma read_write
- u8:2 syn_ect_snt write_mostly read_write
- u8:2 syn_ect_rcv read_mostly read_write
- u8:2 accecn_minlen write_mostly read_write
- u8:2 est_ecnfield read_write
- u8:2 accecn_opt_demand read_mostly read_write
- u8:2 prev_ecnfield read_write
- u64 accecn_opt_tstamp read_write
- u8:4 accecn_fail_mode
- 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
- struct sk_buff* 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
- struct sk_buff* 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
- struct sk_buff* highest_sack read_write tcp_event_new_data_sent
- 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
- ============================= ======================= =================== =================== ==================================================================================================================================================================================================================
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