1 /* 2 * Copyright (c) 2006-2008 Apple Computer, Inc. All Rights Reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23 24 #pragma D depends_on library darwin.d 25 #pragma D depends_on module mach_kernel 26 #pragma D depends_on provider tcp 27 28 /* 29 * TCP flags 30 */ 31 inline int TH_FIN = 0x01; 32 #pragma D binding "1.0" TH_FIN 33 inline int TH_SYN = 0x02; 34 #pragma D binding "1.0" TH_SYN 35 inline int TH_RST = 0x04; 36 #pragma D binding "1.0" TH_RST 37 inline int TH_PUSH = 0x08; 38 #pragma D binding "1.0" TH_PUSH 39 inline int TH_ACK = 0x10; 40 #pragma D binding "1.0" TH_ACK 41 inline int TH_URG = 0x20; 42 #pragma D binding "1.0" TH_URG 43 inline int TH_ECE = 0x40; 44 #pragma D binding "1.0" TH_ECE 45 inline int TH_CWR = 0x80; 46 #pragma D binding "1.0" TH_CWR 47 48 /* 49 * TCP states 50 */ 51 inline int TCPS_CLOSED = 0; 52 #pragma D binding "1.0" TCPS_CLOSED 53 inline int TCPS_LISTEN = 1; 54 #pragma D binding "1.0" TCPS_LISTEN 55 inline int TCPS_SYN_SENT = 2; 56 #pragma D binding "1.0" TCPS_SYN_SENT 57 inline int TCPS_SYN_RECEIVED = 3; 58 #pragma D binding "1.0" TCPS_SYN_RECEIVED 59 inline int TCPS_ESTABLISHED = 4; 60 #pragma D binding "1.0" TCPS_ESTABLISHED 61 inline int TCPS_CLOSE_WAIT = 5; 62 #pragma D binding "1.0" TCPS_CLOSE_WAIT 63 inline int TCPS_FIN_WAIT_1 = 6; 64 #pragma D binding "1.0" TCPS_FIN_WAIT_1 65 inline int TCPS_CLOSING = 7; 66 #pragma D binding "1.0" TCPS_CLOSING 67 inline int TCPS_LAST_ACK = 8; 68 #pragma D binding "1.0" TCPS_LAST_ACK 69 inline int TCPS_FIN_WAIT_2 = 9; 70 #pragma D binding "1.0" TCPS_FIN_WAIT_2 71 inline int TCPS_TIME_WAIT = 10; 72 #pragma D binding "1.0" TCPS_TIME_WAIT 73 74 /* 75 * TCP congestion control events 76 */ 77 inline int TCP_CC_CWND_INIT = 0; 78 #pragma D binding "1.0" TCP_CC_CWND_INIT 79 inline int TCP_CC_INSEQ_ACK_RCVD = 1; 80 #pragma D binding "1.0" TCP_CC_INSEQ_ACK_RCVD 81 inline int TCP_CC_ACK_RCVD = 2; 82 #pragma D binding "1.0" TCP_CC_ACK_RCVD 83 inline int TCP_CC_ENTER_FASTRECOVERY = 3; 84 #pragma D binding "1.0" TCP_CC_ENTER_FASTRECOVERY 85 inline int TCP_CC_IN_FASTRECOVERY = 4; 86 #pragma D binding "1.0" TCP_CC_IN_FASTRECOVERY 87 inline int TCP_CC_EXIT_FASTRECOVERY = 5; 88 #pragma D binding "1.0" TCP_CC_EXIT_FASTRECOVERY 89 inline int TCP_CC_PARTIAL_ACK = 6; 90 #pragma D binding "1.0" TCP_CC_PARTIAL_ACK 91 inline int TCP_CC_IDLE_TIMEOUT = 7; 92 #pragma D binding "1.0" TCP_CC_IDLE_TIMEOUT 93 inline int TCP_CC_REXMT_TIMEOUT = 8; 94 #pragma D binding "1.0" TCP_CC_REXMT_TIMEOUT 95 inline int TCP_CC_ECN_RCVD = 9; 96 #pragma D binding "1.0" TCP_CC_ECN_RCVD 97 inline int TCP_CC_BAD_REXMT_RECOVERY = 10; 98 #pragma D binding "1.0" TCP_CC_BAD_REXMT_RECOVERY 99 inline int TCP_CC_OUTPUT_ERROR = 11; 100 #pragma D binding "1.0" TCP_CC_OUTPUT_ERROR 101 inline int TCP_CC_CHANGE_ALGO = 12; 102 #pragma D binding "1.0" TCP_CC_CHANGE_ALGO 103 inline int TCP_CC_FLOW_CONTROL = 13; 104 #pragma D binding "1.0" TCP_CC_FLOW_CONTROL 105 inline int TCP_CC_SUSPEND = 14; 106 #pragma D binding "1.0" TCP_CC_SUSPEND 107 inline int TCP_CC_LIMITED_TRANSMIT = 15; 108 #pragma D binding "1.0" TCP_CC_LIMITED_TRANSMIT 109 inline int TCP_CC_EARLY_RETRANSMIT = 16; 110 #pragma D binding "1.0" TCP_CC_EARLY_RETRANSMIT 111 112 113 /* 114 * tcpinfo is the TCP header field 115 */ 116 typedef struct tcpinfo { 117 uint16_t tcp_sport; /* source port */ 118 uint16_t tcp_dport; /* destination port */ 119 uint32_t tcp_seq; /* sequence number */ 120 uint32_t tcp_ack; /* acknowledgement number */ 121 uint8_t tcp_offset; /* data offset, in bytes */ 122 uint8_t tcp_flags; /* flags */ 123 uint16_t tcp_window; /* window size */ 124 uint16_t tcp_checksum; /* checksum */ 125 uint16_t tcp_urgent; /* urgent data pointer */ 126 struct tcphdr *tcp_hdr; /* raw TCP header */ 127 } tcpinfo_t; 128 129 #pragma D binding "1.0" translator 130 translator tcpinfo_t < struct tcphdr *T > { 131 tcp_sport = ntohs(T->th_sport); 132 tcp_dport = ntohs(T->th_dport); 133 tcp_seq = ntohl(T->th_seq); 134 tcp_ack = ntohl(T->th_ack); 135 tcp_offset = T->th_off << 2; 136 tcp_flags = T->th_flags; 137 tcp_window = ntohs(T->th_win); 138 tcp_checksum = ntohs(T->th_sum); 139 tcp_urgent = ntohs(T->th_urp); 140 tcp_hdr = T; 141 }; 142 143 /* 144 * tcpsinfo contains stable TCP details from TCP control block 145 */ 146 typedef struct tcpsinfo { 147 int tcps_local; /* is delivered locally, boolean */ 148 int tcps_active; /* active open, boolean */ 149 string tcps_state; /* TCP state, as a string */ 150 u_int t_flags; /* flags */ 151 uint32_t rcv_nxt; /* receive next */ 152 uint32_t rcv_adv; /* advertised window */ 153 uint32_t rcv_wnd; /* receive window */ 154 uint32_t snd_wnd; /* send window */ 155 uint32_t snd_cwnd; /* congestion controlled window */ 156 uint32_t snd_ssthresh; /* slow-start threshold */ 157 uint32_t snd_una; /* send unacknowledged */ 158 uint32_t snd_nxt; /* send next */ 159 uint32_t snd_max; /* send max */ 160 uint32_t snd_recover; /* send recover for NewReno */ 161 int t_rxtcur; /* retransmit timeout in ms */ 162 u_int t_maxseg; /* maximum segment size */ 163 u_int t_rttbest; /* best rtt we have seen */ 164 int rcv_numsacks; /* number of sack blocks present */ 165 int snd_numholes; /* number of holes seen by sender */ 166 struct tcpcb* tcpcb; /* Pointer to tcp control block */ 167 } tcpsinfo_t; 168 169 #pragma D binding "1.0" translator 170 translator tcpsinfo_t < struct tcpcb *T> { 171 tcps_local = 0; /* Not used */ 172 tcps_active = 0; 173 tcps_state = T ? 174 T->t_state == TCPS_CLOSED ? "state-closed" : 175 T->t_state == TCPS_LISTEN ? "state-listen" : 176 T->t_state == TCPS_SYN_SENT ? "state-syn-sent" : 177 T->t_state == TCPS_SYN_RECEIVED ? "state-syn-received" : 178 T->t_state == TCPS_ESTABLISHED ? "state-established" : 179 T->t_state == TCPS_CLOSE_WAIT ? "state-close-wait" : 180 T->t_state == TCPS_FIN_WAIT_1 ? "state-fin-wait1" : 181 T->t_state == TCPS_CLOSING ? "state-closing" : 182 T->t_state == TCPS_LAST_ACK ? "state-last-ack" : 183 T->t_state == TCPS_FIN_WAIT_2 ? "state-fin-wait2" : 184 T->t_state == TCPS_TIME_WAIT ? "state-time-wait" : 185 "<unknown>" : "<null>"; 186 t_flags = T->t_flags; 187 rcv_nxt = T->rcv_nxt; 188 rcv_adv = T->rcv_adv; 189 rcv_wnd = T->rcv_wnd; 190 snd_wnd = T->snd_wnd; 191 snd_cwnd = T->snd_cwnd; 192 snd_ssthresh = T->snd_ssthresh; 193 snd_una = T->snd_una; 194 snd_nxt = T->snd_nxt; 195 snd_max = T->snd_max; 196 snd_recover = T->snd_recover; 197 t_rxtcur = T->t_rxtcur; 198 t_maxseg = T->t_maxseg; 199 t_rttbest = T->t_rttbest; 200 rcv_numsacks = T->rcv_numsacks; 201 snd_numholes = T->snd_numholes; 202 tcpcb = T; 203 }; 204 205 /* 206 * tcpnsinfo provides the new tcp state for state changes. 207 */ 208 typedef struct tcpnsinfo { 209 string tcps_state; /* TCP state, as a string */ 210 } tcpnsinfo_t; 211 212 #pragma D binding "1.0" translator 213 translator tcpnsinfo_t < int32_t I > { 214 tcps_state = I ? 215 I == TCPS_LISTEN ? "state-listen" : 216 I == TCPS_SYN_SENT ? "state-syn-sent" : 217 I == TCPS_SYN_RECEIVED ? "state-syn-received" : 218 I == TCPS_ESTABLISHED ? "state-established" : 219 I == TCPS_CLOSE_WAIT ? "state-close-wait" : 220 I == TCPS_FIN_WAIT_1 ? "state-fin-wait1" : 221 I == TCPS_CLOSING ? "state-closing" : 222 I == TCPS_LAST_ACK ? "state-last-ack" : 223 I == TCPS_FIN_WAIT_2 ? "state-fin-wait2" : 224 I == TCPS_TIME_WAIT ? "state-time-wait" : 225 "<unknown>" : "state-closed"; 226 }; 227 228 /* 229 * tcpccevent provides the congestion control event for TCP cc probes 230 */ 231 typedef struct tcpccevent { 232 string tcp_cc; /* TCP congestion control event, as a string */ 233 } tcpccevent_t; 234 235 #pragma D binding "1.0" translator 236 translator tcpccevent_t < int32_t I > { 237 tcp_cc = I ? 238 I == TCP_CC_INSEQ_ACK_RCVD ? "inseq-ack-rcvd" : 239 I == TCP_CC_ACK_RCVD ? "ack-rcvd" : 240 I == TCP_CC_ENTER_FASTRECOVERY ? "enter-fastrecovery" : 241 I == TCP_CC_EXIT_FASTRECOVERY ? "exit-fastrecovery" : 242 I == TCP_CC_PARTIAL_ACK ? "partial-ack" : 243 I == TCP_CC_IDLE_TIMEOUT ? "idle-timeout" : 244 I == TCP_CC_REXMT_TIMEOUT ? "rexmt-timeout" : 245 I == TCP_CC_ECN_RCVD ? "ecn-rcvd" : 246 I == TCP_CC_BAD_REXMT_RECOVERY ? "bad-rexmt" : 247 I == TCP_CC_OUTPUT_ERROR ? "output-error" : 248 I == TCP_CC_CHANGE_ALGO ? "change-algo" : 249 I == TCP_CC_FLOW_CONTROL ? "flow-control" : 250 I == TCP_CC_SUSPEND ? "suspend" : 251 I == TCP_CC_LIMITED_TRANSMIT ? "limited-transmit" : 252 I == TCP_CC_EARLY_RETRANSMIT ? "early-rexmt" : 253 "<unknown>" : "cwnd-init"; 254 }; 255