tcp.d revision 273765
1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 * 21 * $FreeBSD: stable/10/cddl/lib/libdtrace/tcp.d 273765 2014-10-28 06:17:25Z markj $ 22 */ 23/* 24 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. 25 * Copyright (c) 2013 Mark Johnston <markj@freebsd.org> 26 */ 27 28#pragma D depends_on library ip.d 29#pragma D depends_on provider tcp 30 31/* 32 * Convert a TCP state value to a string. 33 */ 34#pragma D binding "1.0" TCPS_CLOSED 35inline int TCPS_CLOSED = 0; 36#pragma D binding "1.0" TCPS_LISTEN 37inline int TCPS_LISTEN = 1; 38#pragma D binding "1.0" TCPS_SYN_SENT 39inline int TCPS_SYN_SENT = 2; 40#pragma D binding "1.0" TCPS_SYN_RECEIVED 41inline int TCPS_SYN_RECEIVED = 3; 42#pragma D binding "1.0" TCPS_ESTABLISHED 43inline int TCPS_ESTABLISHED = 4; 44#pragma D binding "1.0" TCPS_CLOSE_WAIT 45inline int TCPS_CLOSE_WAIT = 5; 46#pragma D binding "1.0" TCPS_FIN_WAIT_1 47inline int TCPS_FIN_WAIT_1 = 6; 48#pragma D binding "1.0" TCPS_CLOSING 49inline int TCPS_CLOSING = 7; 50#pragma D binding "1.0" TCPS_LAST_ACK 51inline int TCPS_LAST_ACK = 8; 52#pragma D binding "1.0" TCPS_FIN_WAIT_2 53inline int TCPS_FIN_WAIT_2 = 9; 54#pragma D binding "1.0" TCPS_TIME_WAIT 55inline int TCPS_TIME_WAIT = 10; 56 57/* TCP segment flags. */ 58#pragma D binding "1.0" TH_FIN 59inline uint8_t TH_FIN = 0x01; 60#pragma D binding "1.0" TH_SYN 61inline uint8_t TH_SYN = 0x02; 62#pragma D binding "1.0" TH_RST 63inline uint8_t TH_RST = 0x04; 64#pragma D binding "1.0" TH_PUSH 65inline uint8_t TH_PUSH = 0x08; 66#pragma D binding "1.0" TH_ACK 67inline uint8_t TH_ACK = 0x10; 68#pragma D binding "1.0" TH_URG 69inline uint8_t TH_URG = 0x20; 70#pragma D binding "1.0" TH_ECE 71inline uint8_t TH_ECE = 0x40; 72#pragma D binding "1.0" TH_CWR 73inline uint8_t TH_CWR = 0x80; 74 75/* TCP connection state strings. */ 76#pragma D binding "1.0" tcp_state_string 77inline string tcp_state_string[int32_t state] = 78 state == TCPS_CLOSED ? "state-closed" : 79 state == TCPS_LISTEN ? "state-listen" : 80 state == TCPS_SYN_SENT ? "state-syn-sent" : 81 state == TCPS_SYN_RECEIVED ? "state-syn-received" : 82 state == TCPS_ESTABLISHED ? "state-established" : 83 state == TCPS_CLOSE_WAIT ? "state-close-wait" : 84 state == TCPS_FIN_WAIT_1 ? "state-fin-wait-1" : 85 state == TCPS_CLOSING ? "state-closing" : 86 state == TCPS_LAST_ACK ? "state-last-ack" : 87 state == TCPS_FIN_WAIT_2 ? "state-fin-wait-2" : 88 state == TCPS_TIME_WAIT ? "state-time-wait" : 89 "<unknown>"; 90 91/* 92 * tcpsinfo contains stable TCP details from tcp_t. 93 */ 94typedef struct tcpsinfo { 95 uintptr_t tcps_addr; 96 int tcps_local; /* is delivered locally, boolean */ 97 int tcps_active; /* active open (from here), boolean */ 98 uint16_t tcps_lport; /* local port */ 99 uint16_t tcps_rport; /* remote port */ 100 string tcps_laddr; /* local address, as a string */ 101 string tcps_raddr; /* remote address, as a string */ 102 int32_t tcps_state; /* TCP state */ 103 uint32_t tcps_iss; /* Initial sequence # sent */ 104 uint32_t tcps_suna; /* sequence # sent but unacked */ 105 uint32_t tcps_snxt; /* next sequence # to send */ 106 uint32_t tcps_rack; /* sequence # we have acked */ 107 uint32_t tcps_rnxt; /* next sequence # expected */ 108 uint32_t tcps_swnd; /* send window size */ 109 int32_t tcps_snd_ws; /* send window scaling */ 110 uint32_t tcps_rwnd; /* receive window size */ 111 int32_t tcps_rcv_ws; /* receive window scaling */ 112 uint32_t tcps_cwnd; /* congestion window */ 113 uint32_t tcps_cwnd_ssthresh; /* threshold for congestion avoidance */ 114 uint32_t tcps_sack_fack; /* SACK sequence # we have acked */ 115 uint32_t tcps_sack_snxt; /* next SACK seq # for retransmission */ 116 uint32_t tcps_rto; /* round-trip timeout, msec */ 117 uint32_t tcps_mss; /* max segment size */ 118 int tcps_retransmit; /* retransmit send event, boolean */ 119} tcpsinfo_t; 120 121/* 122 * tcplsinfo provides the old tcp state for state changes. 123 */ 124typedef struct tcplsinfo { 125 int32_t tcps_state; /* previous TCP state */ 126} tcplsinfo_t; 127 128/* 129 * tcpinfo is the TCP header fields. 130 */ 131typedef struct tcpinfo { 132 uint16_t tcp_sport; /* source port */ 133 uint16_t tcp_dport; /* destination port */ 134 uint32_t tcp_seq; /* sequence number */ 135 uint32_t tcp_ack; /* acknowledgment number */ 136 uint8_t tcp_offset; /* data offset, in bytes */ 137 uint8_t tcp_flags; /* flags */ 138 uint16_t tcp_window; /* window size */ 139 uint16_t tcp_checksum; /* checksum */ 140 uint16_t tcp_urgent; /* urgent data pointer */ 141 struct tcphdr *tcp_hdr; /* raw TCP header */ 142} tcpinfo_t; 143 144/* 145 * A clone of tcpinfo_t used to handle the fact that the TCP input path 146 * overwrites some fields of the TCP header with their host-order equivalents. 147 * Unfortunately, DTrace doesn't let us simply typedef a new name for struct 148 * tcpinfo and define a separate translator for it. 149 */ 150typedef struct tcpinfoh { 151 uint16_t tcp_sport; /* source port */ 152 uint16_t tcp_dport; /* destination port */ 153 uint32_t tcp_seq; /* sequence number */ 154 uint32_t tcp_ack; /* acknowledgment number */ 155 uint8_t tcp_offset; /* data offset, in bytes */ 156 uint8_t tcp_flags; /* flags */ 157 uint16_t tcp_window; /* window size */ 158 uint16_t tcp_checksum; /* checksum */ 159 uint16_t tcp_urgent; /* urgent data pointer */ 160 struct tcphdr *tcp_hdr; /* raw TCP header */ 161} tcpinfoh_t; 162 163#pragma D binding "1.0" translator 164translator csinfo_t < struct tcpcb *p > { 165 cs_addr = NULL; 166 cs_cid = (uint64_t)(p == NULL ? 0 : p->t_inpcb); 167 cs_pid = 0; 168 cs_zoneid = 0; 169}; 170 171#pragma D binding "1.0" translator 172translator tcpsinfo_t < struct tcpcb *p > { 173 tcps_addr = (uintptr_t)p; 174 tcps_local = -1; /* XXX */ 175 tcps_active = -1; /* XXX */ 176 tcps_lport = p == NULL ? 0 : ntohs(p->t_inpcb->inp_inc.inc_ie.ie_lport); 177 tcps_rport = p == NULL ? 0 : ntohs(p->t_inpcb->inp_inc.inc_ie.ie_fport); 178 tcps_laddr = p == NULL ? 0 : 179 p->t_inpcb->inp_vflag == INP_IPV4 ? 180 inet_ntoa(&p->t_inpcb->inp_inc.inc_ie.ie_dependladdr.ie46_local.ia46_addr4.s_addr) : 181 inet_ntoa6(&p->t_inpcb->inp_inc.inc_ie.ie_dependladdr.ie6_local); 182 tcps_raddr = p == NULL ? 0 : 183 p->t_inpcb->inp_vflag == INP_IPV4 ? 184 inet_ntoa(&p->t_inpcb->inp_inc.inc_ie.ie_dependfaddr.ie46_foreign.ia46_addr4.s_addr) : 185 inet_ntoa6(&p->t_inpcb->inp_inc.inc_ie.ie_dependfaddr.ie6_foreign); 186 tcps_state = p == NULL ? -1 : p->t_state; 187 tcps_iss = p == NULL ? 0 : p->iss; 188 tcps_suna = p == NULL ? 0 : p->snd_una; 189 tcps_snxt = p == NULL ? 0 : p->snd_nxt; 190 tcps_rack = p == NULL ? 0 : p->last_ack_sent; 191 tcps_rnxt = p == NULL ? 0 : p->rcv_nxt; 192 tcps_swnd = p == NULL ? -1 : p->snd_wnd; 193 tcps_snd_ws = p == NULL ? -1 : p->snd_scale; 194 tcps_rwnd = p == NULL ? -1 : p->rcv_wnd; 195 tcps_rcv_ws = p == NULL ? -1 : p->rcv_scale; 196 tcps_cwnd = p == NULL ? -1 : p->snd_cwnd; 197 tcps_cwnd_ssthresh = p == NULL ? -1 : p->snd_ssthresh; 198 tcps_sack_fack = p == NULL ? 0 : p->snd_fack; 199 tcps_sack_snxt = p == NULL ? 0 : p->sack_newdata; 200 tcps_rto = p == NULL ? -1 : (p->t_rxtcur * 1000) / `hz; 201 tcps_mss = p == NULL ? -1 : p->t_maxseg; 202 tcps_retransmit = p == NULL ? -1 : p->t_rxtshift > 0 ? 1 : 0; 203}; 204 205#pragma D binding "1.0" translator 206translator tcpinfo_t < struct tcphdr *p > { 207 tcp_sport = p == NULL ? 0 : ntohs(p->th_sport); 208 tcp_dport = p == NULL ? 0 : ntohs(p->th_dport); 209 tcp_seq = p == NULL ? -1 : ntohl(p->th_seq); 210 tcp_ack = p == NULL ? -1 : ntohl(p->th_ack); 211 tcp_offset = p == NULL ? -1 : (p->th_off >> 2); 212 tcp_flags = p == NULL ? 0 : p->th_flags; 213 tcp_window = p == NULL ? 0 : ntohs(p->th_win); 214 tcp_checksum = p == NULL ? 0 : ntohs(p->th_sum); 215 tcp_urgent = p == NULL ? 0 : ntohs(p->th_urp); 216 tcp_hdr = (struct tcphdr *)p; 217}; 218 219/* 220 * This translator differs from the one for tcpinfo_t in that the sequence 221 * number, acknowledgement number, window size and urgent pointer are already 222 * in host order and thus don't need to be converted. 223 */ 224#pragma D binding "1.0" translator 225translator tcpinfoh_t < struct tcphdr *p > { 226 tcp_sport = p == NULL ? 0 : ntohs(p->th_sport); 227 tcp_dport = p == NULL ? 0 : ntohs(p->th_dport); 228 tcp_seq = p == NULL ? -1 : p->th_seq; 229 tcp_ack = p == NULL ? -1 : p->th_ack; 230 tcp_offset = p == NULL ? -1 : (p->th_off >> 2); 231 tcp_flags = p == NULL ? 0 : p->th_flags; 232 tcp_window = p == NULL ? 0 : (p->th_win); 233 tcp_checksum = p == NULL ? 0 : ntohs(p->th_sum); 234 tcp_urgent = p == NULL ? 0 : p->th_urp; 235 tcp_hdr = (struct tcphdr *)p; 236}; 237 238#pragma D binding "1.0" translator 239translator tcplsinfo_t < int s > { 240 tcps_state = s; 241}; 242