/*
- * Copyright (c) 2000-2011 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_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
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
- *
+ *
* 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,
* 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_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
(TCPOPT_NOP<<24|TCPOPT_NOP<<16|(ccopt)<<8|TCPOLEN_CC)
#define TCPOPT_SIGNATURE 19 /* Keyed MD5: RFC 2385 */
#define TCPOLEN_SIGNATURE 18
+#if MPTCP
+#define TCPOPT_MULTIPATH 30
+#endif
/* Option definitions */
#define TCPOPT_SACK_PERMIT_HDR \
*/
#define TCP_MINMSS 216
-/*
- * TCP_MINMSSOVERLOAD is defined to be 1000 which should cover any type
- * of interactive TCP session.
- * See tcp_subr.c tcp_minmssoverload SYSCTL declaration and tcp_input.c
- * for more comments.
- * Setting this to "0" disables the minmssoverload check.
- */
-#define TCP_MINMSSOVERLOAD 1000
-
/*
* Default maximum segment size for TCP6.
* With an IP6 MSS of 1280, this is 1220,
#define TCP_RXT_CONNDROPTIME 0x80 /* time after which tcp retransmissions will be
* stopped and the connection will be dropped
*/
-#define TCP_RXT_FINDROP 0x100 /* when this option is set, drop a connection
+#define TCP_RXT_FINDROP 0x100 /* when this option is set, drop a connection
* after retransmitting the FIN 3 times. It will
* prevent holding too many mbufs in socket
* buffer queues.
*/
+#define TCP_KEEPINTVL 0x101 /* interval between keepalives */
+#define TCP_KEEPCNT 0x102 /* number of keepalives before close */
+#define TCP_SENDMOREACKS 0x103 /* always ack every other packet */
#ifdef PRIVATE
-#define TCP_INFO 0x200 /* retrieve tcp_info structure */
+#define TCP_INFO 0x200 /* retrieve tcp_info structure */
+#define TCP_NOTSENT_LOWAT 0x201 /* Low water mark for TCP unsent data */
+#define TCP_MEASURE_SND_BW 0x202 /* Measure sender's bandwidth for this connection */
+#define TCP_MEASURE_BW_BURST 0x203 /* Burst size to use for bandwidth measurement */
+#define TCP_PEER_PID 0x204 /* Lookup pid of the process we're connected to */
+#define TCP_ADAPTIVE_READ_TIMEOUT 0x205 /* Read timeout used as a multiple of RTT */
+/*
+ * Enable message delivery on a socket, this feature is currently unsupported and
+ * is subjected to change in future.
+ */
+#define TCP_ENABLE_MSGS 0x206
+#define TCP_ADAPTIVE_WRITE_TIMEOUT 0x207 /* Write timeout used as a multiple of RTT */
/*
- * 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.
+ * The TCP_INFO socket option is a private API and is subject to change
*/
#pragma pack(4)
#define TCPI_OPT_WSCALE 0x04
#define TCPI_OPT_ECN 0x08
+#define TCPI_FLAG_LOSSRECOVERY 0x01 /* Currently in loss recovery */
+
+/*
+ * Add new fields to this structure at the end only. This will preserve
+ * binary compatibility.
+ */
struct tcp_info {
u_int8_t tcpi_state; /* TCP FSM state. */
u_int8_t tcpi_options; /* Options enabled on conn. */
u_int8_t tcpi_snd_wscale; /* RFC1323 send shift value. */
u_int8_t tcpi_rcv_wscale; /* RFC1323 recv shift value. */
+ u_int32_t tcpi_flags; /* extra flags (TCPI_FLAG_xxx) */
+
+ u_int32_t tcpi_rto; /* Retransmission timeout in milliseconds */
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_rttcur; /* Most recent value of RTT */
+ u_int32_t tcpi_srtt; /* Smoothed RTT */
+ u_int32_t tcpi_rttvar; /* RTT variance */
+ u_int32_t tcpi_rttbest; /* Best RTT we've seen */
+
u_int32_t tcpi_snd_ssthresh; /* Slow start threshold. */
u_int32_t tcpi_snd_cwnd; /* Send congestion window. */
u_int32_t tcpi_rcv_space; /* Advertised recv window. */
u_int32_t tcpi_snd_wnd; /* Advertised send window. */
- u_int32_t tcpi_snd_bwnd; /* Bandwidth send window. */
u_int32_t tcpi_snd_nxt; /* Next egress seqno */
u_int32_t tcpi_rcv_nxt; /* Next ingress seqno */
int32_t tcpi_last_outif; /* if_index of interface used to send last */
+ u_int32_t tcpi_snd_sbbytes; /* bytes in snd buffer including data inflight */
+
+ u_int64_t tcpi_txpackets __attribute__((aligned(8))); /* total packets sent */
+ u_int64_t tcpi_txbytes __attribute__((aligned(8)));
+ /* total bytes sent */
+ u_int64_t tcpi_txretransmitbytes __attribute__((aligned(8)));
+ /* total bytes retransmitted */
+ u_int64_t tcpi_txunacked __attribute__((aligned(8)));
+ /* current number of bytes not acknowledged */
+ u_int64_t tcpi_rxpackets __attribute__((aligned(8))); /* total packets received */
+ u_int64_t tcpi_rxbytes __attribute__((aligned(8)));
+ /* total bytes received */
+ u_int64_t tcpi_rxduplicatebytes __attribute__((aligned(8)));
+ /* total duplicate bytes received */
+ u_int64_t tcpi_rxoutoforderbytes __attribute__((aligned(8)));
+ /* total out of order bytes received */
+ u_int64_t tcpi_snd_bw __attribute__((aligned(8))); /* measured send bandwidth in bits/sec */
+ u_int8_t tcpi_synrexmits; /* Number of syn retransmits before connect */
+ u_int8_t tcpi_unused1;
+ u_int16_t tcpi_unused2;
+ u_int64_t tcpi_cell_rxpackets __attribute((aligned(8))); /* packets received over cellular */
+ u_int64_t tcpi_cell_rxbytes __attribute((aligned(8))); /* bytes received over cellular */
+ u_int64_t tcpi_cell_txpackets __attribute((aligned(8))); /* packets transmitted over cellular */
+ u_int64_t tcpi_cell_txbytes __attribute((aligned(8))); /* bytes transmitted over cellular */
+ u_int64_t tcpi_wifi_rxpackets __attribute((aligned(8))); /* packets received over Wi-Fi */
+ u_int64_t tcpi_wifi_rxbytes __attribute((aligned(8))); /* bytes received over Wi-Fi */
+ u_int64_t tcpi_wifi_txpackets __attribute((aligned(8))); /* packets transmitted over Wi-Fi */
+ u_int64_t tcpi_wifi_txbytes __attribute((aligned(8))); /* bytes transmitted over Wi-Fi */
+};
+
+struct tcp_measure_bw_burst {
+ u_int32_t min_burst_size; /* Minimum number of packets to use */
+ u_int32_t max_burst_size; /* Maximum number of packets to use */
};
/*
#define itpl_remote_sin itpl_remoteaddr._itpl_sin
#define itpl_remote_sin6 itpl_remoteaddr._itpl_sin6
+/*
+ * TCP connection info auxiliary data (CIAUX_TCP)
+ *
+ * Do not add new fields to this structure, just add them to tcp_info
+ * structure towards the end. This will preserve binary compatibility.
+ */
+typedef struct conninfo_tcp {
+ pid_t tcpci_peer_pid; /* loopback peer PID if > 0 */
+ struct tcp_info tcpci_tcp_info; /* TCP info */
+} conninfo_tcp_t;
+
#pragma pack()
#endif /* PRIVATE */
projects / apple / xnu.git / blobdiff