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[apple/xnu.git] / bsd / dev / dtrace / scripts / tcp.d
diff --git a/bsd/dev/dtrace/scripts/tcp.d b/bsd/dev/dtrace/scripts/tcp.d
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+/*
+ * Copyright (c) 2006-2008 Apple Computer, Inc.  All Rights Reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#pragma D depends_on library darwin.d
+#pragma D depends_on module mach_kernel
+#pragma D depends_on provider tcp
+
+/*
+ * TCP flags
+ */
+inline int TH_FIN = 0x01;
+#pragma D binding "1.0" TH_FIN
+inline int TH_SYN = 0x02;
+#pragma D binding "1.0" TH_SYN
+inline int TH_RST = 0x04;
+#pragma D binding "1.0" TH_RST
+inline int TH_PUSH = 0x08;
+#pragma D binding "1.0" TH_PUSH
+inline int TH_ACK = 0x10;
+#pragma D binding "1.0" TH_ACK
+inline int TH_URG = 0x20;
+#pragma D binding "1.0" TH_URG
+inline int TH_ECE = 0x40;
+#pragma D binding "1.0" TH_ECE
+inline int TH_CWR = 0x80;
+#pragma D binding "1.0" TH_CWR
+
+/*
+ * TCP states
+ */
+inline int TCPS_CLOSED = 0;
+#pragma D binding "1.0" TCPS_CLOSED
+inline int TCPS_LISTEN = 1;
+#pragma D binding "1.0" TCPS_LISTEN
+inline int TCPS_SYN_SENT = 2;
+#pragma D binding "1.0" TCPS_SYN_SENT
+inline int TCPS_SYN_RECEIVED = 3;
+#pragma D binding "1.0" TCPS_SYN_RECEIVED
+inline int TCPS_ESTABLISHED = 4;
+#pragma D binding "1.0" TCPS_ESTABLISHED
+inline int TCPS_CLOSE_WAIT = 5;
+#pragma D binding "1.0" TCPS_CLOSE_WAIT
+inline int TCPS_FIN_WAIT_1 = 6;
+#pragma D binding "1.0" TCPS_FIN_WAIT_1
+inline int TCPS_CLOSING = 7;
+#pragma D binding "1.0" TCPS_CLOSING
+inline int TCPS_LAST_ACK = 8;
+#pragma D binding "1.0" TCPS_LAST_ACK
+inline int TCPS_FIN_WAIT_2 = 9;
+#pragma D binding "1.0" TCPS_FIN_WAIT_2
+inline int TCPS_TIME_WAIT = 10;
+#pragma D binding "1.0" TCPS_TIME_WAIT
+
+/*
+ * TCP congestion control events
+ */
+inline int TCP_CC_CWND_INIT = 0;
+#pragma D binding "1.0" TCP_CC_CWND_INIT
+inline int TCP_CC_INSEQ_ACK_RCVD = 1;
+#pragma D binding "1.0" TCP_CC_INSEQ_ACK_RCVD
+inline int TCP_CC_ACK_RCVD = 2;
+#pragma D binding "1.0" TCP_CC_ACK_RCVD
+inline int TCP_CC_ENTER_FASTRECOVERY = 3;
+#pragma D binding "1.0" TCP_CC_ENTER_FASTRECOVERY
+inline int TCP_CC_IN_FASTRECOVERY = 4;
+#pragma D binding "1.0" TCP_CC_IN_FASTRECOVERY
+inline int TCP_CC_EXIT_FASTRECOVERY = 5;
+#pragma D binding "1.0" TCP_CC_EXIT_FASTRECOVERY
+inline int TCP_CC_PARTIAL_ACK = 6;
+#pragma D binding "1.0" TCP_CC_PARTIAL_ACK
+inline int TCP_CC_IDLE_TIMEOUT = 7;
+#pragma D binding "1.0" TCP_CC_IDLE_TIMEOUT
+inline int TCP_CC_REXMT_TIMEOUT = 8;
+#pragma D binding "1.0" TCP_CC_REXMT_TIMEOUT
+inline int TCP_CC_ECN_RCVD = 9;
+#pragma D binding "1.0" TCP_CC_ECN_RCVD
+inline int TCP_CC_BAD_REXMT_RECOVERY = 10;
+#pragma D binding "1.0" TCP_CC_BAD_REXMT_RECOVERY
+inline int TCP_CC_OUTPUT_ERROR = 11;
+#pragma D binding "1.0" TCP_CC_OUTPUT_ERROR
+inline int TCP_CC_CHANGE_ALGO = 12;
+#pragma D binding "1.0" TCP_CC_CHANGE_ALGO
+inline int TCP_CC_FLOW_CONTROL = 13;
+#pragma D binding "1.0" TCP_CC_FLOW_CONTROL
+inline int TCP_CC_SUSPEND = 14;
+#pragma D binding "1.0" TCP_CC_SUSPEND
+inline int TCP_CC_LIMITED_TRANSMIT = 15;
+#pragma D binding "1.0" TCP_CC_LIMITED_TRANSMIT
+inline int TCP_CC_EARLY_RETRANSMIT = 16;
+#pragma D binding "1.0" TCP_CC_EARLY_RETRANSMIT
+
+
+/*
+ * tcpinfo is the TCP header field
+ */
+typedef struct tcpinfo {
+       uint16_t tcp_sport;     /* source port */
+       uint16_t tcp_dport;     /* destination port */
+       uint32_t tcp_seq;       /* sequence number */
+       uint32_t tcp_ack;       /* acknowledgement number */
+       uint8_t tcp_offset;     /* data offset, in bytes */
+       uint8_t tcp_flags;      /* flags */
+       uint16_t tcp_window;    /* window size */
+       uint16_t tcp_checksum;  /* checksum */
+       uint16_t tcp_urgent;    /* urgent data pointer */
+       struct tcphdr *tcp_hdr; /* raw TCP header */
+} tcpinfo_t;
+
+#pragma D binding "1.0" translator
+translator tcpinfo_t < struct tcphdr *T > {
+       tcp_sport = ntohs(T->th_sport);
+       tcp_dport = ntohs(T->th_dport);
+       tcp_seq = ntohl(T->th_seq);
+       tcp_ack = ntohl(T->th_ack);
+       tcp_offset = T->th_off << 2;
+       tcp_flags = T->th_flags;
+       tcp_window = ntohs(T->th_win);
+       tcp_checksum = ntohs(T->th_sum);
+       tcp_urgent = ntohs(T->th_urp);
+       tcp_hdr = T;
+};
+
+/*
+ * tcpsinfo contains stable TCP details from TCP control block
+ */
+typedef struct tcpsinfo {
+       int tcps_local;         /* is delivered locally, boolean */
+       int tcps_active;        /* active open, boolean */
+       string tcps_state;      /* TCP state, as a string */
+       u_int t_flags;          /* flags */
+       uint32_t rcv_nxt;       /* receive next */
+       uint32_t rcv_adv;       /* advertised window */
+       uint32_t rcv_wnd;       /* receive window */
+       uint32_t snd_wnd;       /* send window */
+       uint32_t snd_cwnd;      /* congestion controlled window */
+       uint32_t snd_ssthresh;  /* slow-start threshold */
+       uint32_t snd_una;       /* send unacknowledged */
+       uint32_t snd_nxt;       /* send next */
+       uint32_t snd_max;       /* send max */
+       uint32_t snd_recover;   /* send recover for NewReno */
+       int     t_rxtcur;       /* retransmit timeout in ms */
+       u_int   t_maxseg;       /* maximum segment size */
+       u_int   t_rttbest;      /* best rtt we have seen */
+       int     rcv_numsacks;   /* number of sack blocks present */
+       int     snd_numholes;   /* number of holes seen by sender */
+       struct tcpcb* tcpcb;    /* Pointer to tcp control block */
+} tcpsinfo_t;
+
+#pragma D binding "1.0" translator
+translator tcpsinfo_t < struct tcpcb *T> {
+       tcps_local = 0;         /* Not used */
+       tcps_active = 0;
+       tcps_state = T ? 
+               T->t_state == TCPS_CLOSED ? "state-closed" :
+               T->t_state == TCPS_LISTEN ? "state-listen" :
+               T->t_state == TCPS_SYN_SENT ? "state-syn-sent" :
+               T->t_state == TCPS_SYN_RECEIVED ? "state-syn-received" :
+               T->t_state == TCPS_ESTABLISHED ? "state-established" :
+               T->t_state == TCPS_CLOSE_WAIT ? "state-close-wait" :
+               T->t_state == TCPS_FIN_WAIT_1 ? "state-fin-wait1" :
+               T->t_state == TCPS_CLOSING ? "state-closing" :
+               T->t_state == TCPS_LAST_ACK ? "state-last-ack" :
+               T->t_state == TCPS_FIN_WAIT_2 ? "state-fin-wait2" :
+               T->t_state == TCPS_TIME_WAIT ? "state-time-wait" :
+               "<unknown>" : "<null>";
+       t_flags = T->t_flags;
+       rcv_nxt = T->rcv_nxt;
+       rcv_adv = T->rcv_adv;
+       rcv_wnd = T->rcv_wnd;
+       snd_wnd = T->snd_wnd;
+       snd_cwnd = T->snd_cwnd;
+       snd_ssthresh = T->snd_ssthresh;
+       snd_una = T->snd_una;
+       snd_nxt = T->snd_nxt;
+       snd_max = T->snd_max;
+       snd_recover = T->snd_recover;
+       t_rxtcur = T->t_rxtcur;
+       t_maxseg = T->t_maxseg;
+       t_rttbest = T->t_rttbest;
+       rcv_numsacks = T->rcv_numsacks;
+       snd_numholes = T->snd_numholes;
+       tcpcb = T;
+};
+
+/*
+ * tcpnsinfo provides the new tcp state for state changes.
+ */
+typedef struct tcpnsinfo {
+       string tcps_state;      /* TCP state, as a string */
+} tcpnsinfo_t;
+
+#pragma D binding "1.0" translator
+translator tcpnsinfo_t < int32_t I > {
+       tcps_state = I ? 
+               I == TCPS_LISTEN ? "state-listen" :
+               I == TCPS_SYN_SENT ? "state-syn-sent" :
+               I == TCPS_SYN_RECEIVED ? "state-syn-received" :
+               I == TCPS_ESTABLISHED ? "state-established" :
+               I == TCPS_CLOSE_WAIT ? "state-close-wait" :
+               I == TCPS_FIN_WAIT_1 ? "state-fin-wait1" :
+               I == TCPS_CLOSING ? "state-closing" :
+               I == TCPS_LAST_ACK ? "state-last-ack" :
+               I == TCPS_FIN_WAIT_2 ? "state-fin-wait2" :
+               I == TCPS_TIME_WAIT ? "state-time-wait" :
+               "<unknown>" : "state-closed";
+};
+
+/* 
+ * tcpccevent provides the congestion control event for TCP cc probes
+ */
+typedef struct tcpccevent {
+       string tcp_cc;          /* TCP congestion control event, as a string */
+} tcpccevent_t;
+
+#pragma D binding "1.0" translator
+translator tcpccevent_t < int32_t I > {
+       tcp_cc = I ?
+               I == TCP_CC_INSEQ_ACK_RCVD ? "inseq-ack-rcvd" :
+               I == TCP_CC_ACK_RCVD ? "ack-rcvd" :
+               I == TCP_CC_ENTER_FASTRECOVERY ? "enter-fastrecovery" :
+               I == TCP_CC_EXIT_FASTRECOVERY ? "exit-fastrecovery" :
+               I == TCP_CC_PARTIAL_ACK ? "partial-ack" :
+               I == TCP_CC_IDLE_TIMEOUT ? "idle-timeout" :
+               I == TCP_CC_REXMT_TIMEOUT ? "rexmt-timeout" :
+               I == TCP_CC_ECN_RCVD ? "ecn-rcvd" :
+               I == TCP_CC_BAD_REXMT_RECOVERY ? "bad-rexmt" :
+               I == TCP_CC_OUTPUT_ERROR ? "output-error" :
+               I == TCP_CC_CHANGE_ALGO ? "change-algo" :
+               I == TCP_CC_FLOW_CONTROL ? "flow-control" :
+               I == TCP_CC_SUSPEND ? "suspend" :
+               I == TCP_CC_LIMITED_TRANSMIT ? "limited-transmit" :
+               I == TCP_CC_EARLY_RETRANSMIT ? "early-rexmt" :
+               "<unknown>" : "cwnd-init";
+};