/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1982, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef _NETINET_TCP_H_ #define _NETINET_TCP_H_ #include <sys/types.h> #if __BSD_VISIBLE typedef u_int32_t tcp_seq; #define tcp6_seq tcp_seq /* for KAME src sync over BSD*'s */ #define tcp6hdr tcphdr /* for KAME src sync over BSD*'s */ /* * TCP header. * Per RFC 793, September, 1981. */ struct tcphdr { u_short th_sport; /* source port */ u_short th_dport; /* destination port */ tcp_seq th_seq; /* sequence number */ tcp_seq th_ack; /* acknowledgement number */ #if BYTE_ORDER == LITTLE_ENDIAN u_char th_x2:4, /* upper 4 (reserved) flags */ th_off:4; /* data offset */ #endif #if BYTE_ORDER == BIG_ENDIAN u_char th_off:4, /* data offset */ th_x2:4; /* upper 4 (reserved) flags */ #endif u_char th_flags; #define TH_FIN 0x01 #define TH_SYN 0x02 #define TH_RST 0x04 #define TH_PUSH 0x08 #define TH_ACK 0x10 #define TH_URG 0x20 #define TH_ECE 0x40 #define TH_CWR 0x80 #define TH_AE 0x100 /* maps into th_x2 */ #define TH_RES3 0x200 #define TH_RES2 0x400 #define TH_RES1 0x800 #define TH_FLAGS (TH_FIN|TH_SYN|TH_RST|TH_PUSH|TH_ACK|TH_URG|TH_ECE|TH_CWR|TH_AE) #define PRINT_TH_FLAGS "\20\1FIN\2SYN\3RST\4PUSH\5ACK\6URG\7ECE\10CWR\11AE" u_short th_win; /* window */ u_short th_sum; /* checksum */ u_short th_urp; /* urgent pointer */ } __packed; static __inline uint16_t __tcp_get_flags(const struct tcphdr *th) { return (((uint16_t)th->th_x2 << 8) | th->th_flags); } static __inline void __tcp_set_flags(struct tcphdr *th, uint16_t flags) { th->th_x2 = (flags >> 8) & 0x0f; th->th_flags = flags & 0xff; } #ifdef _KERNEL #define tcp_get_flags(th) __tcp_get_flags(th) #define tcp_set_flags(th, flags) __tcp_set_flags(th, flags) #endif #define PADTCPOLEN(len) ((((len) / 4) + !!((len) % 4)) * 4) #define TCPOPT_EOL 0 #define TCPOLEN_EOL 1 #define TCPOPT_PAD 0 /* padding after EOL */ #define TCPOLEN_PAD 1 #define TCPOPT_NOP 1 #define TCPOLEN_NOP 1 #define TCPOPT_MAXSEG 2 #define TCPOLEN_MAXSEG 4 #define TCPOPT_WINDOW 3 #define TCPOLEN_WINDOW 3 #define TCPOPT_SACK_PERMITTED 4 #define TCPOLEN_SACK_PERMITTED 2 #define TCPOPT_SACK 5 #define TCPOLEN_SACKHDR 2 #define TCPOLEN_SACK 8 /* 2*sizeof(tcp_seq) */ #define TCPOPT_TIMESTAMP 8 #define TCPOLEN_TIMESTAMP 10 #define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */ #define TCPOPT_SIGNATURE 19 /* Keyed MD5: RFC 2385 */ #define TCPOLEN_SIGNATURE 18 #define TCPOPT_FAST_OPEN 34 #define TCPOLEN_FAST_OPEN_EMPTY 2 #define MAX_TCPOPTLEN 40 /* Absolute maximum TCP options len */ /* Miscellaneous constants */ #define MAX_SACK_BLKS 6 /* Max # SACK blocks stored at receiver side */ #define TCP_MAX_SACK 4 /* MAX # SACKs sent in any segment */ /* * The default maximum segment size (MSS) to be used for new TCP connections * when path MTU discovery is not enabled. * * RFC879 derives the default MSS from the largest datagram size hosts are * minimally required to handle directly or through IP reassembly minus the * size of the IP and TCP header. With IPv6 the minimum MTU is specified * in RFC2460. * * For IPv4 the MSS is 576 - sizeof(struct tcpiphdr) * For IPv6 the MSS is IPV6_MMTU - sizeof(struct ip6_hdr) - sizeof(struct tcphdr) * * We use explicit numerical definition here to avoid header pollution. */ #define TCP_MSS 536 #define TCP6_MSS 1220 /* * Limit the lowest MSS we accept for path MTU discovery and the TCP SYN MSS * option. Allowing low values of MSS can consume significant resources and * be used to mount a resource exhaustion attack. * Connections requesting lower MSS values will be rounded up to this value * and the IP_DF flag will be cleared to allow fragmentation along the path. * * See tcp_subr.c tcp_minmss SYSCTL declaration for more comments. Setting * it to "0" disables the minmss check. * * The default value is fine for TCP across the Internet's smallest official * link MTU (256 bytes for AX.25 packet radio). However, a connection is very * unlikely to come across such low MTU interfaces these days (anno domini 2003). */ #define TCP_MINMSS 216 #define TCP_MAXWIN 65535 /* largest value for (unscaled) window */ #define TTCP_CLIENT_SND_WND 4096 /* dflt send window for T/TCP client */ #define TCP_MAX_WINSHIFT 14 /* maximum window shift */ #define TCP_MAXHLEN (0xf<<2) /* max length of header in bytes */ #define TCP_MAXOLEN (TCP_MAXHLEN - sizeof(struct tcphdr)) /* max space left for options */ #define TCP_FASTOPEN_MIN_COOKIE_LEN 4 /* Per RFC7413 */ #define TCP_FASTOPEN_MAX_COOKIE_LEN 16 /* Per RFC7413 */ #define TCP_FASTOPEN_PSK_LEN 16 /* Same as TCP_FASTOPEN_KEY_LEN */ #endif /* __BSD_VISIBLE */ /* * User-settable options (used with setsockopt). These are discrete * values and are not masked together. Some values appear to be * bitmasks for historical reasons. */ #define TCP_NODELAY 1 /* don't delay send to coalesce packets */ #if __BSD_VISIBLE #define TCP_MAXSEG 2 /* set maximum segment size */ #define TCP_NOPUSH 4 /* don't push last block of write */ #define TCP_NOOPT 8 /* don't use TCP options */ #define TCP_MD5SIG 16 /* use MD5 digests (RFC2385) */ #define TCP_INFO 32 /* retrieve tcp_info structure */ #define TCP_STATS 33 /* retrieve stats blob structure */ #define TCP_LOG 34 /* configure event logging for connection */ #define TCP_LOGBUF 35 /* retrieve event log for connection */ #define TCP_LOGID 36 /* configure log ID to correlate connections */ #define TCP_LOGDUMP 37 /* dump connection log events to device */ #define TCP_LOGDUMPID 38 /* dump events from connections with same ID to device */ #define TCP_TXTLS_ENABLE 39 /* TLS framing and encryption for transmit */ #define TCP_TXTLS_MODE 40 /* Transmit TLS mode */ #define TCP_RXTLS_ENABLE 41 /* TLS framing and encryption for receive */ #define TCP_RXTLS_MODE 42 /* Receive TLS mode */ #define TCP_IWND_NB 43 /* Override initial window (units: bytes) */ #define TCP_IWND_NSEG 44 /* Override initial window (units: MSS segs) */ #ifdef _KERNEL #define TCP_USE_DDP 45 /* Use direct data placement for so_rcvbuf */ #endif #define TCP_LOGID_CNT 46 /* get number of connections with the same ID */ #define TCP_LOG_TAG 47 /* configure tag for grouping logs */ #define TCP_USER_LOG 48 /* userspace log event */ #define TCP_CONGESTION 64 /* get/set congestion control algorithm */ #define TCP_CCALGOOPT 65 /* get/set cc algorithm specific options */ #define TCP_MAXUNACKTIME 68 /* maximum time without making progress (sec) */ /* unused 69 */ #define TCP_IDLE_REDUCE 70 /* Reduce cwnd on idle input */ #define TCP_REMOTE_UDP_ENCAPS_PORT 71 /* Enable TCP over UDP tunneling via the specified port */ #define TCP_DELACK 72 /* socket option for delayed ack */ #define TCP_FIN_IS_RST 73 /* A fin from the peer is treated has a RST */ #define TCP_LOG_LIMIT 74 /* Limit to number of records in tcp-log */ #define TCP_SHARED_CWND_ALLOWED 75 /* Use of a shared cwnd is allowed */ #define TCP_PROC_ACCOUNTING 76 /* Do accounting on tcp cpu usage and counts */ #define TCP_USE_CMP_ACKS 77 /* The transport can handle the Compressed mbuf acks */ #define TCP_PERF_INFO 78 /* retrieve accounting counters */ #define TCP_KEEPINIT 128 /* N, time to establish connection */ #define TCP_KEEPIDLE 256 /* L,N,X start keeplives after this period */ #define TCP_KEEPINTVL 512 /* L,N interval between keepalives */ #define TCP_KEEPCNT 1024 /* L,N number of keepalives before close */ #define TCP_FASTOPEN 1025 /* enable TFO / was created via TFO */ /* unused 2048 was TCP_PCAP_OUT */ /* unused 4096 was TCP_PCAP_IN */ #define TCP_FUNCTION_BLK 8192 /* Set the tcp function pointers to the specified stack */ #define TCP_FUNCTION_ALIAS 8193 /* Get the current tcp function pointer name alias */ /* Options for Rack and BBR */ #define TCP_REUSPORT_LB_NUMA 1026 /* set listen socket numa domain */ #define TCP_RACK_MBUF_QUEUE 1050 /* Do we allow mbuf queuing if supported */ /* unused 1051 */ #define TCP_RACK_TLP_REDUCE 1052 /* RACK TLP cwnd reduction (bool) */ /* unused 1053 */ #define TCP_RACK_PACE_MAX_SEG 1054 /* Max TSO size we will send */ #define TCP_RACK_PACE_ALWAYS 1055 /* Use the always pace method */ /* unused 1056 */ #define TCP_RACK_PRR_SENDALOT 1057 /* Allow PRR to send more than one seg */ #define TCP_RACK_MIN_TO 1058 /* Minimum time between rack t-o's in ms */ /* unused 1059 */ #define TCP_RACK_EARLY_SEG 1060 /* If early recovery max segments */ #define TCP_RACK_REORD_THRESH 1061 /* RACK reorder threshold (shift amount) */ #define TCP_RACK_REORD_FADE 1062 /* Does reordering fade after ms time */ #define TCP_RACK_TLP_THRESH 1063 /* RACK TLP theshold i.e. srtt+(srtt/N) */ #define TCP_RACK_PKT_DELAY 1064 /* RACK added ms i.e. rack-rtt + reord + N */ /* unused 1065 */ /* unused 1066 */ #define TCP_BBR_IWINTSO 1067 /* Initial TSO window for BBRs first sends */ /* unused 1068 */ #define TCP_BBR_STARTUP_PG 1069 /* Startup pacing gain */ #define TCP_BBR_DRAIN_PG 1070 /* Drain pacing gain */ /* unused 1071 */ #define TCP_BBR_PROBE_RTT_INT 1072 /* How long in useconds between probe-rtt */ /* unused 1073 */ #define TCP_BBR_STARTUP_LOSS_EXIT 1074 /* Do we exit a loss during startup if not 20% incr */ /* unused 1075 */ #define TCP_BBR_TSLIMITS 1076 /* Do we use experimental Timestamp limiting for our algo */ #define TCP_BBR_PACE_OH 1077 /* pacing overhead setting */ /* unused 1078 */ #define TCP_BBR_USEDEL_RATE 1079 /* Enable use of delivery rate for loss recovery */ #define TCP_BBR_MIN_RTO 1080 /* Min RTO in milliseconds */ #define TCP_BBR_MAX_RTO 1081 /* Max RTO in milliseconds */ /* unused 1082 */ #define TCP_BBR_ALGORITHM 1083 /* What measurement algo does BBR use netflix=0, google=1 */ /* unused 1084 */ /* unused 1085 */ #define TCP_BBR_PACE_PER_SEC 1086 #define TCP_BBR_PACE_DEL_TAR 1087 #define TCP_BBR_PACE_SEG_MAX 1088 #define TCP_BBR_PACE_SEG_MIN 1089 #define TCP_BBR_PACE_CROSS 1090 /* unused 1091 */ /* unused 1092 */ /* unused 1093 */ /* unused 1094 */ #define TCP_RACK_TLP_USE 1095 #define TCP_BBR_TMR_PACE_OH 1096 /* ??? */ #define TCP_RACK_DO_DETECTION 1097 /* Recycle of extra gain for rack, attack detection */ #define TCP_BBR_RACK_RTT_USE 1098 /* what RTT should we use 0, 1, or 2? */ #define TCP_BBR_RETRAN_WTSO 1099 #define TCP_DATA_AFTER_CLOSE 1100 #define TCP_BBR_PROBE_RTT_GAIN 1101 #define TCP_BBR_PROBE_RTT_LEN 1102 #define TCP_BBR_SEND_IWND_IN_TSO 1103 /* Do we burst out whole iwin size chunks at start? */ #define TCP_BBR_USE_RACK_RR 1104 /* Do we use the rack rapid recovery for pacing rxt's */ #define TCP_BBR_USE_RACK_CHEAT TCP_BBR_USE_RACK_RR /* Compat. */ #define TCP_BBR_HDWR_PACE 1105 /* Enable/disable hardware pacing */ #define TCP_BBR_UTTER_MAX_TSO 1106 /* Do we enforce an utter max TSO size */ #define TCP_BBR_EXTRA_STATE 1107 /* Special exit-persist catch up */ #define TCP_BBR_FLOOR_MIN_TSO 1108 /* The min tso size */ #define TCP_BBR_MIN_TOPACEOUT 1109 /* Do we suspend pacing until */ #define TCP_BBR_TSTMP_RAISES 1110 /* Can a timestamp measurement raise the b/w */ #define TCP_BBR_POLICER_DETECT 1111 /* Turn on/off google mode policer detection */ #define TCP_BBR_RACK_INIT_RATE 1112 /* Set an initial pacing rate for when we have no b/w in kbits per sec */ #define TCP_RACK_RR_CONF 1113 /* Rack rapid recovery configuration control*/ #define TCP_RACK_GP_INCREASE_CA 1114 /* GP increase for Congestion Avoidance */ #define TCP_RACK_GP_INCREASE_SS 1115 /* GP increase for Slow Start */ #define TCP_RACK_GP_INCREASE_REC 1116 /* GP increase for Recovery */ #define TCP_RACK_FORCE_MSEG 1117 /* Override to use the user set max-seg value */ #define TCP_RACK_PACE_RATE_CA 1118 /* Pacing rate for Congestion Avoidance */ #define TCP_RACK_PACE_RATE_SS 1119 /* Pacing rate for Slow Start */ #define TCP_RACK_PACE_RATE_REC 1120 /* Pacing rate for Recovery */ #define TCP_NO_PRR 1122 /* If pacing, don't use prr */ #define TCP_RACK_NONRXT_CFG_RATE 1123 /* In recovery does a non-rxt use the cfg rate */ #define TCP_SHARED_CWND_ENABLE 1124 /* Use a shared cwnd if allowed */ #define TCP_TIMELY_DYN_ADJ 1125 /* Do we attempt dynamic multipler adjustment with timely. */ #define TCP_RACK_NO_PUSH_AT_MAX 1126 /* For timely do not push if we are over max rtt */ #define TCP_RACK_PACE_TO_FILL 1127 /* If we are not in recovery, always pace to fill the cwnd in 1 RTT */ #define TCP_SHARED_CWND_TIME_LIMIT 1128 /* we should limit to low time values the scwnd life */ #define TCP_RACK_PROFILE 1129 /* Select a profile that sets multiple options */ #define TCP_HDWR_RATE_CAP 1130 /* Allow hardware rates to cap pacing rate */ #define TCP_PACING_RATE_CAP 1131 /* Highest rate allowed in pacing in bytes per second (uint64_t) */ #define TCP_HDWR_UP_ONLY 1132 /* Allow the pacing rate to climb but not descend (with the exception of fill-cw */ #define TCP_RACK_ABC_VAL 1133 /* Set a local ABC value different then the system default */ #define TCP_REC_ABC_VAL 1134 /* Do we use the ABC value for recovery or the override one from sysctl */ #define TCP_RACK_MEASURE_CNT 1135 /* How many measurements are required in GP pacing */ #define TCP_DEFER_OPTIONS 1136 /* Defer options until the proper number of measurements occur, does not defer TCP_RACK_MEASURE_CNT */ /* unused 1137 */ #define TCP_RACK_PACING_BETA 1138 /* Changing the beta for pacing */ #define TCP_RACK_PACING_BETA_ECN 1139 /* Changing the beta for ecn with pacing */ #define TCP_RACK_TIMER_SLOP 1140 /* Set or get the timer slop used */ #define TCP_RACK_DSACK_OPT 1141 /* How do we setup rack timer DSACK options bit 1/2 */ #define TCP_RACK_ENABLE_HYSTART 1142 /* Do we allow hystart in the CC modules */ #define TCP_RACK_SET_RXT_OPTIONS 1143 /* Set the bits in the retransmit options */ #define TCP_RACK_HI_BETA 1144 /* Turn on/off high beta */ #define TCP_RACK_SPLIT_LIMIT 1145 /* Set a split limit for split allocations */ #define TCP_RACK_PACING_DIVISOR 1146 /* Pacing divisor given to rate-limit code for burst sizing */ #define TCP_RACK_PACE_MIN_SEG 1147 /* Pacing min seg size rack will use */ #define TCP_RACK_DGP_IN_REC 1148 /* Do we use full DGP in recovery? */ /* unused 1149 */ #define TCP_HYBRID_PACING 1150 /* Hybrid pacing enablement */ #define TCP_PACING_DND 1151 /* When pacing with rr_config=3 can sacks disturb us */ #define TCP_SS_EEXIT 1152 /* Do we do early exit from slowtart if no b/w growth */ #define TCP_DGP_UPPER_BOUNDS 1153 /* SS and CA upper bound in percentage */ #define TCP_NO_TIMELY 1154 /* Disable/enable Timely */ #define TCP_HONOR_HPTS_MIN 1155 /* Do we honor hpts min to */ #define TCP_REC_IS_DYN 1156 /* Do we allow timely to change recovery multiplier? */ #define TCP_SIDECHAN_DIS 1157 /* Disable/enable the side-channel */ #define TCP_FILLCW_RATE_CAP 1158 /* Set a cap for DGP's fillcw */ /* unused 1159 */ #define TCP_STACK_SPEC_INFO 1160 /* Get stack specific information (if present) */ #define RACK_CSPR_IS_FCC 1161 #define TCP_GP_USE_LTBW 1162 /* how we use lt_bw 0=not, 1=min, 2=max */ /* Start of reserved space for third-party user-settable options. */ #define TCP_VENDOR SO_VENDOR #define TCP_CA_NAME_MAX 16 /* max congestion control name length */ #define TCPI_OPT_TIMESTAMPS 0x01 #define TCPI_OPT_SACK 0x02 #define TCPI_OPT_WSCALE 0x04 #define TCPI_OPT_ECN 0x08 #define TCPI_OPT_TOE 0x10 #define TCPI_OPT_TFO 0x20 #define TCPI_OPT_ACE 0x40 /* Maximum length of log ID. */ #define TCP_LOG_ID_LEN 64 /* TCP accounting counters */ #define TCP_NUM_PROC_COUNTERS 11 #define TCP_NUM_CNT_COUNTERS 13 /* Must match counter array sizes in tcpcb */ struct tcp_perf_info { uint64_t tcp_cnt_counters[TCP_NUM_CNT_COUNTERS]; uint64_t tcp_proc_time[TCP_NUM_CNT_COUNTERS]; uint64_t timebase; /* timebase for tcp_proc_time */ uint8_t tb_is_stable; /* timebase is stable/invariant */ }; /* * The TCP_INFO socket option comes from the Linux 2.6 TCP API, and permits * the caller to query certain information about the state of a TCP * connection. We provide an overlapping set of fields with the Linux * implementation, but since this is a fixed size structure, room has been * left for growth. In order to maximize potential future compatibility with * the Linux API, the same variable names and order have been adopted, and * padding left to make room for omitted fields in case they are added later. * * XXX: This is currently an unstable ABI/API, in that it is expected to * change. */ struct tcp_info { u_int8_t tcpi_state; /* TCP FSM state. */ u_int8_t __tcpi_ca_state; u_int8_t __tcpi_retransmits; u_int8_t __tcpi_probes; u_int8_t __tcpi_backoff; u_int8_t tcpi_options; /* Options enabled on conn. */ u_int8_t tcpi_snd_wscale:4, /* RFC1323 send shift value. */ tcpi_rcv_wscale:4; /* RFC1323 recv shift value. */ u_int32_t tcpi_rto; /* Retransmission timeout (usec). */ u_int32_t __tcpi_ato; u_int32_t tcpi_snd_mss; /* Max segment size for send. */ u_int32_t tcpi_rcv_mss; /* Max segment size for receive. */ u_int32_t __tcpi_unacked; u_int32_t __tcpi_sacked; u_int32_t __tcpi_lost; u_int32_t __tcpi_retrans; u_int32_t __tcpi_fackets; /* Times; measurements in usecs. */ u_int32_t __tcpi_last_data_sent; u_int32_t __tcpi_last_ack_sent; /* Also unimpl. on Linux? */ u_int32_t tcpi_last_data_recv; /* Time since last recv data. */ u_int32_t __tcpi_last_ack_recv; /* Metrics; variable units. */ u_int32_t __tcpi_pmtu; u_int32_t __tcpi_rcv_ssthresh; u_int32_t tcpi_rtt; /* Smoothed RTT in usecs. */ u_int32_t tcpi_rttvar; /* RTT variance in usecs. */ u_int32_t tcpi_snd_ssthresh; /* Slow start threshold. */ u_int32_t tcpi_snd_cwnd; /* Send congestion window. */ u_int32_t __tcpi_advmss; u_int32_t __tcpi_reordering; u_int32_t __tcpi_rcv_rtt; u_int32_t tcpi_rcv_space; /* Advertised recv window. */ /* FreeBSD extensions to tcp_info. */ u_int32_t tcpi_snd_wnd; /* Advertised send window. */ u_int32_t tcpi_snd_bwnd; /* No longer used. */ u_int32_t tcpi_snd_nxt; /* Next egress seqno */ u_int32_t tcpi_rcv_nxt; /* Next ingress seqno */ u_int32_t tcpi_toe_tid; /* HWTID for TOE endpoints */ u_int32_t tcpi_snd_rexmitpack; /* Retransmitted packets */ u_int32_t tcpi_rcv_ooopack; /* Out-of-order packets */ u_int32_t tcpi_snd_zerowin; /* Zero-sized windows sent */ /* Accurate ECN counters. */ u_int32_t tcpi_delivered_ce; u_int32_t tcpi_received_ce; /* # of CE marks received */ u_int32_t __tcpi_delivered_e1_bytes; u_int32_t __tcpi_delivered_e0_bytes; u_int32_t __tcpi_delivered_ce_bytes; u_int32_t __tcpi_received_e1_bytes; u_int32_t __tcpi_received_e0_bytes; u_int32_t __tcpi_received_ce_bytes; u_int32_t tcpi_total_tlp; /* tail loss probes sent */ u_int64_t tcpi_total_tlp_bytes; /* tail loss probe bytes sent */ u_int32_t tcpi_snd_una; /* Unacked seqno sent */ u_int32_t tcpi_snd_max; /* Highest seqno sent */ u_int32_t tcpi_rcv_numsacks; /* Distinct SACK blks present */ u_int32_t tcpi_rcv_adv; /* Peer advertised window */ u_int32_t tcpi_dupacks; /* Consecutive dup ACKs recvd */ u_int32_t tcpi_rttmin; /* Min observed RTT */ /* Padding to grow without breaking ABI. */ u_int32_t __tcpi_pad[14]; /* Padding. */ }; /* * If this structure is provided when setting the TCP_FASTOPEN socket * option, and the enable member is non-zero, a subsequent connect will use * pre-shared key (PSK) mode using the provided key. */ struct tcp_fastopen { int enable; uint8_t psk[TCP_FASTOPEN_PSK_LEN]; }; #define TCP_FUNCTION_NAME_LEN_MAX 32 struct stack_specific_info { char stack_name[TCP_FUNCTION_NAME_LEN_MAX]; uint64_t policer_last_bw; /* Only valid if detection enabled and policer detected */ uint64_t bytes_transmitted; uint64_t bytes_retransmitted; uint32_t policer_detection_enabled: 1, policer_detected : 1, /* transport thinks a policer is on path */ highly_buffered : 1, /* transport considers the path highly buffered */ spare : 29; uint32_t policer_bucket_size; /* Only valid if detection enabled and policer detected */ uint32_t current_round; uint32_t _rack_i_pad[18]; }; struct tcp_function_set { char function_set_name[TCP_FUNCTION_NAME_LEN_MAX]; uint32_t pcbcnt; }; /* TLS modes for TCP_TXTLS_MODE */ #define TCP_TLS_MODE_NONE 0 #define TCP_TLS_MODE_SW 1 #define TCP_TLS_MODE_IFNET 2 #define TCP_TLS_MODE_TOE 3 /* * TCP Control message types */ #define TLS_SET_RECORD_TYPE 1 #define TLS_GET_RECORD 2 /* * TCP log user opaque */ struct tcp_snd_req { uint64_t timestamp; uint64_t start; uint64_t end; uint32_t flags; uint32_t playout_ms; }; union tcp_log_userdata { struct tcp_snd_req tcp_req; }; struct tcp_log_user { uint32_t type; uint32_t subtype; union tcp_log_userdata data; }; /* user types, i.e. apps */ #define TCP_LOG_USER_HTTPD 1 /* user subtypes */ #define TCP_LOG_HTTPD_TS 1 /* client timestamp */ #define TCP_LOG_HTTPD_TS_REQ 2 /* client timestamp and request info */ /* HTTPD REQ flags */ #define TCP_LOG_HTTPD_RANGE_START 0x0001 #define TCP_LOG_HTTPD_RANGE_END 0x0002 /* Flags for hybrid pacing */ #define TCP_HYBRID_PACING_CU 0x0001 /* Enable catch-up mode */ #define TCP_HYBRID_PACING_DTL 0x0002 /* Enable Detailed logging */ #define TCP_HYBRID_PACING_CSPR 0x0004 /* A client suggested rate is present */ #define TCP_HYBRID_PACING_H_MS 0x0008 /* A client hint for maxseg is present */ #define TCP_HYBRID_PACING_ENABLE 0x0010 /* We are enabling hybrid pacing else disable */ #define TCP_HYBRID_PACING_S_MSS 0x0020 /* Clent wants us to set the mss overriding gp est in CU */ /* the below are internal only flags */ #define TCP_HYBRID_PACING_USER_MASK 0x0FFF /* Non-internal flags mask */ #define TCP_HYBRID_PACING_SETMSS 0x1000 /* Internal flag that tells us we set the mss on this entry */ #define TCP_HYBRID_PACING_WASSET 0x2000 /* We init to this to know if a hybrid command was issued */ #define TCP_HYBRID_PACING_SENDTIME 0x4000 /* Duplicate tm to last, use sendtime for catch up mode */ struct tcp_hybrid_req { struct tcp_snd_req req; uint64_t cspr; uint32_t hint_maxseg; uint32_t hybrid_flags; }; /* * TCP specific variables of interest for tp->t_stats stats(9) accounting. */ #define VOI_TCP_TXPB 0 /* Transmit payload bytes */ #define VOI_TCP_RETXPB 1 /* Retransmit payload bytes */ #define VOI_TCP_FRWIN 2 /* Foreign receive window */ #define VOI_TCP_LCWIN 3 /* Local congesiton window */ #define VOI_TCP_RTT 4 /* Round trip time */ #define VOI_TCP_CSIG 5 /* Congestion signal */ #define VOI_TCP_GPUT 6 /* Goodput */ #define VOI_TCP_CALCFRWINDIFF 7 /* Congestion avoidance LCWIN - FRWIN */ #define VOI_TCP_GPUT_ND 8 /* Goodput normalised delta */ #define VOI_TCP_ACKLEN 9 /* Average ACKed bytes per ACK */ #define VOI_TCP_PATHRTT 10 /* The path RTT based on ACK arrival */ #define TCP_REUSPORT_LB_NUMA_NODOM (-2) /* remove numa binding */ #define TCP_REUSPORT_LB_NUMA_CURDOM (-1) /* bind to current domain */ #endif /* __BSD_VISIBLE */ #endif /* !_NETINET_TCP_H_ */
