ÿØÿà JFIF    ÿÛ „  ( %"1!%)+...383,7(-.+  -+++--++++---+-+-----+---------------+---+-++7-----ÿÀ  ß â" ÿÄ     ÿÄ H    !1AQaq"‘¡2B±ÁÑð#R“Ò Tbr‚²á3csƒ’ÂñDS¢³$CÿÄ   ÿÄ %  !1AQa"23‘ÿÚ   ? ôÿ ¨pŸªáÿ —åYõõ\?àÒü©ŠÄï¨pŸªáÿ —åYõõ\?àÓü©ŠÄá 0Ÿªáÿ Ÿå[úƒ ú®ði~TÁbqÐ8OÕpÿ ƒOò¤Oè`–RÂáœá™êi€ßÉ< FtŸI“öÌ8úDf´°å}“¾œ6  öFá°y¥jñÇh†ˆ¢ã/ÃÐ:ªcÈ "Y¡ðÑl>ÿ ”ÏËte:qž\oäŠe÷󲍷˜HT4&ÿ ÓÐü6ö®¿øþßèô Ÿ•7Ñi’•j|“ñì>b…þS?*Óôÿ ÓÐü*h¥£ír¶ü UãSç‚Ÿ[AÐaè[ûª•õ&õj?†Éö+EzP—WeÒírJFt ‘BŒ†Ï‡%#tE Øz ¥OÛ«!1›üä±Í™%ºÍãö]°î(–:@<‹ŒÊö×òÆt¦ãº+‡¦%ÌÁ²h´OƒJŒtMÜ>ÀÜÊw3Y´•牋4ǍýʏTì>œú=Íwhyë,¾Ôò×õ¿ßÊa»«þˆѪQ|%6ž™A õ%:øj<>É—ÿ Å_ˆCbõ¥š±ý¯Ýƒï…¶|RëócÍf溪“t.СøTÿ *Ä¿-{†çàczůŽ_–^XþŒ±miB[X±d 1,é”zEù»& î9gœf™9Ð'.;—™i}!ôšåîqêÛ٤ёý£½ÆA–àôe"A$˝Úsäÿ ÷Û #°xŸëí(l »ý3—¥5m! rt`†0~'j2(]S¦¦kv,ÚÇ l¦øJA£Šƒ J3E8ÙiŽ:cÉžúeZ°€¯\®kÖ(79«Ž:¯X”¾³Š&¡* ….‰Ž(ÜíŸ2¥ª‡×Hi²TF¤ò[¨íÈRëÉ䢍mgÑ.Ÿ<öäS0í„ǹÁU´f#Vß;Õ–…P@3ío<ä-±»Ž.L|kªÀê›fÂ6@»eu‚|ÓaÞÆŸ…¨ááå>åŠ?cKü6ùTÍÆ”†sĤÚ;H2RÚ†õ\Ö·Ÿn'¾ ñ#ºI¤Å´%çÁ­‚â7›‹qT3Iï¨ÖÚ5I7Ë!ÅOóŸ¶øÝñØôת¦$Tcö‘[«Ö³šÒ';Aþ ¸èíg A2Z"i¸vdÄ÷.iõ®§)¿]¤À†–‡É&ä{V¶iŽ”.Ó×Õÿ û?h¬Mt–íª[ÿ Ñÿ ÌV(í}=ibÔ¡›¥¢±b Lô¥‡piη_Z<‡z§èŒ)iÖwiÇ 2hÙ3·=’d÷8éŽ1¦¸c¤µ€7›7Ø ð\á)} ¹fËí›pAÃL%âc2 í§æQz¿;T8sæ°qø)QFMð‰XŒÂ±N¢aF¨…8¯!U  Z©RÊ ÖPVÄÀÍin™Ì-GˆªÅËŠ›•zË}º±ŽÍFò¹}Uw×#ä5B¤{î}Ð<ÙD é©¤&‡ïDbàÁôMÁ." ¤‡ú*õ'VŽ|¼´Úgllº¼klz[Æüï÷Aób‡Eÿ dÑ»Xx9ÃÜ£ÁT/`¼¸vI±Ýµ·Ë‚“G³þ*Ÿû´r|*}<¨îºœ @¦mÄ’M¹”.œ«Y–|6ÏU¤jç¥ÕÞqO ˜kDÆÁ¨5ÿ š;Њ¦¦€GÙk \ –Þ=â¼=SͧµªS°ÚÍpÜãQűÀõ¬?ÃÁ1Ñ•õZà?hóœ€ L¦l{Y*K˜Ù›zc˜–ˆâ ø+¾ ­-Ök¥%ùEÜA'}ˆ><ÊIè“bpÍ/qÞâvoX€w,\úªò6Z[XdÒæ­@Ö—€$òJí#é>'°Ú ôª˜<)4ryÙ£|óAÅn5žêŸyÒäMÝ2{"}‰–¤l÷ûWX\l¾Á¸góÉOÔ /óñB¤f¸çñ[.P˜ZsÊË*ßT܈§QN¢’¡¨§V¼(Üù*eÕ“”5T¨‹Âê¥FŒã½Dü[8'Ò¥a…Ú¶k7a *•›¼'Ò·\8¨ª\@\õ¢¦íq+DÙrmÎ…_ªæ»ŠÓœ¡¯’Ré9MÅ×D™lælffc+ŒÑ,ý™ÿ ¯þǤ=Å’Á7µ÷ÚÛ/“Ü€ñýã¼àí¾ÕÑ+ƒ,uµMâÀÄbm:ÒÎPæ{˜Gz[ƒ¯«® KHà`ßØŠéí¯P8Aq.C‰ à€kòpj´kN¶qô€…Õ,ÜNŠª-­{Zö’æû44‰sŽè‰îVíRœÕm" 6?³D9¡ÇTíÅꋇ`4«¸ÝÁô ï’ýorqКÇZ«x4Žâéþuïf¹µö[P ,Q£éaX±`PÉÍZ ¸äYúg üAx ’6Lê‚xÝÓ*äQ  Ï’¨hÍ =²,6ï#rÃ<¯–£»ƒ‹,–ê•€ aÛsñ'%Æ"®ÛüìBᝠHÚ3ß°©$“XnœÖ’î2ËTeûìxîß ¦å¿çÉ ðK§þ{‘t‚Ϋ¬jéîZ[ ”š7L¥4VÚCE×]m¤Øy”ä4-dz£œ§¸x.*ãÊÊ b÷•h:©‡¦s`BTÁRû¾g⻩‹jø sF¢àJøFl‘È•Xᓁà~*j¯ +(ÚÕ6-£¯÷GŠØy‚<Ç’.F‹Hœw(+)ÜÜâÈzÄäT§FߘãÏ;DmVœ3Àu@mÚüXÝü•3B¨òÌÁÛ<·ÃÜ z,Ì@õÅ·d2]ü8s÷IôÞ¯^Ç9¢u„~ëAŸï4«M? 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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. * 4. 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. * * @(#)tcp.h 8.1 (Berkeley) 6/10/93 */ #ifndef _NETINET_TCP_H #define _NETINET_TCP_H 1 #include /* * User-settable options (used with setsockopt). */ #define TCP_NODELAY 1 /* Don't delay send to coalesce packets */ #define TCP_MAXSEG 2 /* Set maximum segment size */ #define TCP_CORK 3 /* Control sending of partial frames */ #define TCP_KEEPIDLE 4 /* Start keeplives after this period */ #define TCP_KEEPINTVL 5 /* Interval between keepalives */ #define TCP_KEEPCNT 6 /* Number of keepalives before death */ #define TCP_SYNCNT 7 /* Number of SYN retransmits */ #define TCP_LINGER2 8 /* Life time of orphaned FIN-WAIT-2 state */ #define TCP_DEFER_ACCEPT 9 /* Wake up listener only when data arrive */ #define TCP_WINDOW_CLAMP 10 /* Bound advertised window */ #define TCP_INFO 11 /* Information about this connection. */ #define TCP_QUICKACK 12 /* Bock/reenable quick ACKs. */ #define TCP_CONGESTION 13 /* Congestion control algorithm. */ #define TCP_MD5SIG 14 /* TCP MD5 Signature (RFC2385) */ #define TCP_COOKIE_TRANSACTIONS 15 /* TCP Cookie Transactions */ #define TCP_THIN_LINEAR_TIMEOUTS 16 /* Use linear timeouts for thin streams*/ #define TCP_THIN_DUPACK 17 /* Fast retrans. after 1 dupack */ #define TCP_USER_TIMEOUT 18 /* How long for loss retry before timeout */ #define TCP_REPAIR 19 /* TCP sock is under repair right now */ #define TCP_REPAIR_QUEUE 20 /* Set TCP queue to repair */ #define TCP_QUEUE_SEQ 21 /* Set sequence number of repaired queue. */ #define TCP_REPAIR_OPTIONS 22 /* Repair TCP connection options */ #define TCP_FASTOPEN 23 /* Enable FastOpen on listeners */ #define TCP_TIMESTAMP 24 /* TCP time stamp */ #define TCP_NOTSENT_LOWAT 25 /* Limit number of unsent bytes in write queue. */ #define TCP_CC_INFO 26 /* Get Congestion Control (optional) info. */ #define TCP_SAVE_SYN 27 /* Record SYN headers for new connections. */ #define TCP_SAVED_SYN 28 /* Get SYN headers recorded for connection. */ #define TCP_REPAIR_WINDOW 29 /* Get/set window parameters. */ #define TCP_FASTOPEN_CONNECT 30 /* Attempt FastOpen with connect. */ #define TCP_ULP 31 /* Attach a ULP to a TCP connection. */ #define TCP_MD5SIG_EXT 32 /* TCP MD5 Signature with extensions. */ #define TCP_FASTOPEN_KEY 33 /* Set the key for Fast Open (cookie). */ #define TCP_FASTOPEN_NO_COOKIE 34 /* Enable TFO without a TFO cookie. */ #define TCP_ZEROCOPY_RECEIVE 35 #define TCP_INQ 36 /* Notify bytes available to read as a cmsg on read. */ #define TCP_CM_INQ TCP_INQ #define TCP_TX_DELAY 37 /* Delay outgoing packets by XX usec. */ #define TCP_REPAIR_ON 1 #define TCP_REPAIR_OFF 0 #define TCP_REPAIR_OFF_NO_WP -1 #ifdef __USE_MISC # include # include # include typedef uint32_t tcp_seq; /* * TCP header. * Per RFC 793, September, 1981. */ struct tcphdr { __extension__ union { struct { uint16_t th_sport; /* source port */ uint16_t th_dport; /* destination port */ tcp_seq th_seq; /* sequence number */ tcp_seq th_ack; /* acknowledgement number */ # if __BYTE_ORDER == __LITTLE_ENDIAN uint8_t th_x2:4; /* (unused) */ uint8_t th_off:4; /* data offset */ # endif # if __BYTE_ORDER == __BIG_ENDIAN uint8_t th_off:4; /* data offset */ uint8_t th_x2:4; /* (unused) */ # endif uint8_t 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 uint16_t th_win; /* window */ uint16_t th_sum; /* checksum */ uint16_t th_urp; /* urgent pointer */ }; struct { uint16_t source; uint16_t dest; uint32_t seq; uint32_t ack_seq; # if __BYTE_ORDER == __LITTLE_ENDIAN uint16_t res1:4; uint16_t doff:4; uint16_t fin:1; uint16_t syn:1; uint16_t rst:1; uint16_t psh:1; uint16_t ack:1; uint16_t urg:1; uint16_t res2:2; # elif __BYTE_ORDER == __BIG_ENDIAN uint16_t doff:4; uint16_t res1:4; uint16_t res2:2; uint16_t urg:1; uint16_t ack:1; uint16_t psh:1; uint16_t rst:1; uint16_t syn:1; uint16_t fin:1; # else # error "Adjust your defines" # endif uint16_t window; uint16_t check; uint16_t urg_ptr; }; }; }; enum { TCP_ESTABLISHED = 1, TCP_SYN_SENT, TCP_SYN_RECV, TCP_FIN_WAIT1, TCP_FIN_WAIT2, TCP_TIME_WAIT, TCP_CLOSE, TCP_CLOSE_WAIT, TCP_LAST_ACK, TCP_LISTEN, TCP_CLOSING /* now a valid state */ }; # define TCPOPT_EOL 0 # define TCPOPT_NOP 1 # define TCPOPT_MAXSEG 2 # define TCPOLEN_MAXSEG 4 # define TCPOPT_WINDOW 3 # define TCPOLEN_WINDOW 3 # define TCPOPT_SACK_PERMITTED 4 /* Experimental */ # define TCPOLEN_SACK_PERMITTED 2 # define TCPOPT_SACK 5 /* Experimental */ # define TCPOPT_TIMESTAMP 8 # define TCPOLEN_TIMESTAMP 10 # define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */ # define TCPOPT_TSTAMP_HDR \ (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP) /* * Default maximum segment size for TCP. * With an IP MSS of 576, this is 536, * but 512 is probably more convenient. * This should be defined as MIN(512, IP_MSS - sizeof (struct tcpiphdr)). */ # define TCP_MSS 512 # define TCP_MAXWIN 65535 /* largest value for (unscaled) window */ # define TCP_MAX_WINSHIFT 14 /* maximum window shift */ # define SOL_TCP 6 /* TCP level */ # define TCPI_OPT_TIMESTAMPS 1 # define TCPI_OPT_SACK 2 # define TCPI_OPT_WSCALE 4 # define TCPI_OPT_ECN 8 /* ECN was negociated at TCP session init */ # define TCPI_OPT_ECN_SEEN 16 /* we received at least one packet with ECT */ # define TCPI_OPT_SYN_DATA 32 /* SYN-ACK acked data in SYN sent or rcvd */ /* Values for tcpi_state. */ enum tcp_ca_state { TCP_CA_Open = 0, TCP_CA_Disorder = 1, TCP_CA_CWR = 2, TCP_CA_Recovery = 3, TCP_CA_Loss = 4 }; struct tcp_info { uint8_t tcpi_state; uint8_t tcpi_ca_state; uint8_t tcpi_retransmits; uint8_t tcpi_probes; uint8_t tcpi_backoff; uint8_t tcpi_options; uint8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4; uint32_t tcpi_rto; uint32_t tcpi_ato; uint32_t tcpi_snd_mss; uint32_t tcpi_rcv_mss; uint32_t tcpi_unacked; uint32_t tcpi_sacked; uint32_t tcpi_lost; uint32_t tcpi_retrans; uint32_t tcpi_fackets; /* Times. */ uint32_t tcpi_last_data_sent; uint32_t tcpi_last_ack_sent; /* Not remembered, sorry. */ uint32_t tcpi_last_data_recv; uint32_t tcpi_last_ack_recv; /* Metrics. */ uint32_t tcpi_pmtu; uint32_t tcpi_rcv_ssthresh; uint32_t tcpi_rtt; uint32_t tcpi_rttvar; uint32_t tcpi_snd_ssthresh; uint32_t tcpi_snd_cwnd; uint32_t tcpi_advmss; uint32_t tcpi_reordering; uint32_t tcpi_rcv_rtt; uint32_t tcpi_rcv_space; uint32_t tcpi_total_retrans; }; /* For TCP_MD5SIG socket option. */ #define TCP_MD5SIG_MAXKEYLEN 80 /* tcp_md5sig extension flags for TCP_MD5SIG_EXT. */ #define TCP_MD5SIG_FLAG_PREFIX 1 /* Address prefix length. */ struct tcp_md5sig { struct sockaddr_storage tcpm_addr; /* Address associated. */ uint8_t tcpm_flags; /* Extension flags. */ uint8_t tcpm_prefixlen; /* Address prefix. */ uint16_t tcpm_keylen; /* Key length. */ uint32_t __tcpm_pad; /* Zero. */ uint8_t tcpm_key[TCP_MD5SIG_MAXKEYLEN]; /* Key (binary). */ }; /* For socket repair options. */ struct tcp_repair_opt { uint32_t opt_code; uint32_t opt_val; }; /* Queue to repair, for TCP_REPAIR_QUEUE. */ enum { TCP_NO_QUEUE, TCP_RECV_QUEUE, TCP_SEND_QUEUE, TCP_QUEUES_NR, }; /* For cookie transactions socket options. */ #define TCP_COOKIE_MIN 8 /* 64-bits */ #define TCP_COOKIE_MAX 16 /* 128-bits */ #define TCP_COOKIE_PAIR_SIZE (2*TCP_COOKIE_MAX) /* Flags for both getsockopt and setsockopt */ #define TCP_COOKIE_IN_ALWAYS (1 << 0) /* Discard SYN without cookie */ #define TCP_COOKIE_OUT_NEVER (1 << 1) /* Prohibit outgoing cookies, * supercedes everything. */ /* Flags for getsockopt */ #define TCP_S_DATA_IN (1 << 2) /* Was data received? */ #define TCP_S_DATA_OUT (1 << 3) /* Was data sent? */ #define TCP_MSS_DEFAULT 536U /* IPv4 (RFC1122, RFC2581) */ #define TCP_MSS_DESIRED 1220U /* IPv6 (tunneled), EDNS0 (RFC3226) */ struct tcp_cookie_transactions { uint16_t tcpct_flags; uint8_t __tcpct_pad1; uint8_t tcpct_cookie_desired; uint16_t tcpct_s_data_desired; uint16_t tcpct_used; uint8_t tcpct_value[TCP_MSS_DEFAULT]; }; /* For use with TCP_REPAIR_WINDOW. */ struct tcp_repair_window { uint32_t snd_wl1; uint32_t snd_wnd; uint32_t max_window; uint32_t rcv_wnd; uint32_t rcv_wup; }; /* For use with TCP_ZEROCOPY_RECEIVE. */ struct tcp_zerocopy_receive { uint64_t address; /* In: address of mapping. */ uint32_t length; /* In/out: number of bytes to map/mapped. */ uint32_t recv_skip_hint; /* Out: amount of bytes to skip. */ }; #endif /* Misc. */ #endif /* netinet/tcp.h */