Commit | Line | Data |
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8ae0e4b4 | 1 | /* |
64b784d2 | 2 | * Copyright (c) 1984, 1985, 1986, 1987 Regents of the University of California. |
240edf1f | 3 | * All rights reserved. |
8ae0e4b4 | 4 | * |
dbf0c423 | 5 | * %sccs.include.redist.c% |
240edf1f | 6 | * |
dbf0c423 | 7 | * @(#)spp_var.h 7.7 (Berkeley) %G% |
8ae0e4b4 | 8 | */ |
cbf839b6 KS |
9 | |
10 | /* | |
11 | * Sp control block, one per connection | |
12 | */ | |
13 | struct sppcb { | |
14 | struct spidp_q s_q; /* queue for out-of-order receipt */ | |
15 | struct nspcb *s_nspcb; /* backpointer to internet pcb */ | |
16 | u_char s_state; | |
17 | u_char s_flags; | |
64b784d2 KS |
18 | #define SF_ACKNOW 0x01 /* Ack peer immediately */ |
19 | #define SF_DELACK 0x02 /* Ack, but try to delay it */ | |
20 | #define SF_HI 0x04 /* Show headers on input */ | |
21 | #define SF_HO 0x08 /* Show headers on output */ | |
22 | #define SF_PI 0x10 /* Packet (datagram) interface */ | |
23 | #define SF_WIN 0x20 /* Window info changed */ | |
24 | #define SF_RXT 0x40 /* Rxt info changed */ | |
25 | #define SF_RVD 0x80 /* Calling from read usrreq routine */ | |
cbf839b6 KS |
26 | u_short s_mtu; /* Max packet size for this stream */ |
27 | /* use sequence fields in headers to store sequence numbers for this | |
28 | connection */ | |
64b784d2 KS |
29 | struct idp *s_idp; |
30 | struct sphdr s_shdr; /* prototype header to transmit */ | |
31 | #define s_cc s_shdr.sp_cc /* connection control (for EM bit) */ | |
32 | #define s_dt s_shdr.sp_dt /* datastream type */ | |
33 | #define s_sid s_shdr.sp_sid /* source connection identifier */ | |
34 | #define s_did s_shdr.sp_did /* destination connection identifier */ | |
35 | #define s_seq s_shdr.sp_seq /* sequence number */ | |
36 | #define s_ack s_shdr.sp_ack /* acknowledge number */ | |
37 | #define s_alo s_shdr.sp_alo /* allocation number */ | |
38 | #define s_dport s_idp->idp_dna.x_port /* where we are sending */ | |
cbf839b6 KS |
39 | struct sphdr s_rhdr; /* last received header (in effect!)*/ |
40 | u_short s_rack; /* their acknowledge number */ | |
41 | u_short s_ralo; /* their allocation number */ | |
64b784d2 KS |
42 | u_short s_smax; /* highest packet # we have sent */ |
43 | u_short s_snxt; /* which packet to send next */ | |
cbf839b6 | 44 | |
64b784d2 KS |
45 | /* congestion control */ |
46 | #define CUNIT 1024 /* scaling for ... */ | |
47 | int s_cwnd; /* Congestion-controlled window */ | |
48 | /* in packets * CUNIT */ | |
49 | short s_swnd; /* == tcp snd_wnd, in packets */ | |
50 | short s_smxw; /* == tcp max_sndwnd */ | |
51 | /* difference of two spp_seq's can be | |
52 | no bigger than a short */ | |
53 | u_short s_swl1; /* == tcp snd_wl1 */ | |
54 | u_short s_swl2; /* == tcp snd_wl2 */ | |
55 | int s_cwmx; /* max allowable cwnd */ | |
56 | int s_ssthresh; /* s_cwnd size threshhold for | |
57 | * slow start exponential-to- | |
58 | * linear switch */ | |
59 | /* transmit timing stuff | |
60 | * srtt and rttvar are stored as fixed point, for convenience in smoothing. | |
61 | * srtt has 3 bits to the right of the binary point, rttvar has 2. | |
62 | */ | |
cbf839b6 | 63 | short s_idle; /* time idle */ |
863250c1 | 64 | short s_timer[SPPT_NTIMERS]; /* timers */ |
cbf839b6 | 65 | short s_rxtshift; /* log(2) of rexmt exp. backoff */ |
64b784d2 | 66 | short s_rxtcur; /* current retransmit value */ |
cbf839b6 KS |
67 | u_short s_rtseq; /* packet being timed */ |
68 | short s_rtt; /* timer for round trips */ | |
69 | short s_srtt; /* averaged timer */ | |
64b784d2 | 70 | short s_rttvar; /* variance in round trip time */ |
cbf839b6 | 71 | char s_force; /* which timer expired */ |
64b784d2 | 72 | char s_dupacks; /* counter to intuit xmt loss */ |
cbf839b6 KS |
73 | |
74 | /* out of band data */ | |
75 | char s_oobflags; | |
76 | #define SF_SOOB 0x08 /* sending out of band data */ | |
77 | #define SF_IOOB 0x10 /* receiving out of band data */ | |
78 | char s_iobc; /* input characters */ | |
79 | /* debug stuff */ | |
80 | u_short s_want; /* Last candidate for sending */ | |
64b784d2 KS |
81 | char s_outx; /* exit taken from spp_output */ |
82 | char s_inx; /* exit taken from spp_input */ | |
4dcdd98e KS |
83 | u_short s_flags2; /* more flags for testing */ |
84 | #define SF_NEWCALL 0x100 /* for new_recvmsg */ | |
85 | #define SO_NEWCALL 10 /* for new_recvmsg */ | |
cbf839b6 KS |
86 | }; |
87 | ||
88 | #define nstosppcb(np) ((struct sppcb *)(np)->nsp_pcb) | |
89 | #define sotosppcb(so) (nstosppcb(sotonspcb(so))) | |
90 | ||
64b784d2 KS |
91 | struct sppstat { |
92 | long spps_connattempt; /* connections initiated */ | |
93 | long spps_accepts; /* connections accepted */ | |
94 | long spps_connects; /* connections established */ | |
95 | long spps_drops; /* connections dropped */ | |
96 | long spps_conndrops; /* embryonic connections dropped */ | |
97 | long spps_closed; /* conn. closed (includes drops) */ | |
98 | long spps_segstimed; /* segs where we tried to get rtt */ | |
99 | long spps_rttupdated; /* times we succeeded */ | |
100 | long spps_delack; /* delayed acks sent */ | |
101 | long spps_timeoutdrop; /* conn. dropped in rxmt timeout */ | |
102 | long spps_rexmttimeo; /* retransmit timeouts */ | |
103 | long spps_persisttimeo; /* persist timeouts */ | |
104 | long spps_keeptimeo; /* keepalive timeouts */ | |
105 | long spps_keepprobe; /* keepalive probes sent */ | |
106 | long spps_keepdrops; /* connections dropped in keepalive */ | |
107 | ||
108 | long spps_sndtotal; /* total packets sent */ | |
109 | long spps_sndpack; /* data packets sent */ | |
110 | long spps_sndbyte; /* data bytes sent */ | |
111 | long spps_sndrexmitpack; /* data packets retransmitted */ | |
112 | long spps_sndrexmitbyte; /* data bytes retransmitted */ | |
113 | long spps_sndacks; /* ack-only packets sent */ | |
114 | long spps_sndprobe; /* window probes sent */ | |
115 | long spps_sndurg; /* packets sent with URG only */ | |
116 | long spps_sndwinup; /* window update-only packets sent */ | |
117 | long spps_sndctrl; /* control (SYN|FIN|RST) packets sent */ | |
118 | long spps_sndvoid; /* couldn't find requested packet*/ | |
119 | ||
120 | long spps_rcvtotal; /* total packets received */ | |
121 | long spps_rcvpack; /* packets received in sequence */ | |
122 | long spps_rcvbyte; /* bytes received in sequence */ | |
123 | long spps_rcvbadsum; /* packets received with ccksum errs */ | |
124 | long spps_rcvbadoff; /* packets received with bad offset */ | |
125 | long spps_rcvshort; /* packets received too short */ | |
126 | long spps_rcvduppack; /* duplicate-only packets received */ | |
127 | long spps_rcvdupbyte; /* duplicate-only bytes received */ | |
128 | long spps_rcvpartduppack; /* packets with some duplicate data */ | |
129 | long spps_rcvpartdupbyte; /* dup. bytes in part-dup. packets */ | |
130 | long spps_rcvoopack; /* out-of-order packets received */ | |
131 | long spps_rcvoobyte; /* out-of-order bytes received */ | |
132 | long spps_rcvpackafterwin; /* packets with data after window */ | |
133 | long spps_rcvbyteafterwin; /* bytes rcvd after window */ | |
134 | long spps_rcvafterclose; /* packets rcvd after "close" */ | |
135 | long spps_rcvwinprobe; /* rcvd window probe packets */ | |
136 | long spps_rcvdupack; /* rcvd duplicate acks */ | |
137 | long spps_rcvacktoomuch; /* rcvd acks for unsent data */ | |
138 | long spps_rcvackpack; /* rcvd ack packets */ | |
139 | long spps_rcvackbyte; /* bytes acked by rcvd acks */ | |
140 | long spps_rcvwinupd; /* rcvd window update packets */ | |
141 | }; | |
cbf839b6 KS |
142 | struct spp_istat { |
143 | short hdrops; | |
144 | short badsum; | |
145 | short badlen; | |
146 | short slotim; | |
147 | short fastim; | |
148 | short nonucn; | |
149 | short noconn; | |
150 | short notme; | |
151 | short wrncon; | |
152 | short bdreas; | |
153 | short gonawy; | |
f1f25520 KS |
154 | short notyet; |
155 | short lstdup; | |
64b784d2 | 156 | struct sppstat newstats; |
cbf839b6 KS |
157 | }; |
158 | ||
159 | #ifdef KERNEL | |
160 | struct spp_istat spp_istat; | |
64b784d2 KS |
161 | |
162 | /* Following was struct sppstat sppstat; */ | |
163 | #ifndef sppstat | |
164 | #define sppstat spp_istat.newstats | |
165 | #endif | |
166 | ||
cbf839b6 KS |
167 | u_short spp_iss; |
168 | extern struct sppcb *spp_close(), *spp_disconnect(), | |
169 | *spp_usrclosed(), *spp_timers(), *spp_drop(); | |
170 | #endif | |
171 | ||
172 | #define SPP_ISSINCR 128 | |
173 | /* | |
174 | * SPP sequence numbers are 16 bit integers operated | |
175 | * on with modular arithmetic. These macros can be | |
176 | * used to compare such integers. | |
177 | */ | |
64b784d2 KS |
178 | #ifdef sun |
179 | short xnsCbug; | |
180 | #define SSEQ_LT(a,b) ((xnsCbug = (short)((a)-(b))) < 0) | |
181 | #define SSEQ_LEQ(a,b) ((xnsCbug = (short)((a)-(b))) <= 0) | |
182 | #define SSEQ_GT(a,b) ((xnsCbug = (short)((a)-(b))) > 0) | |
183 | #define SSEQ_GEQ(a,b) ((xnsCbug = (short)((a)-(b))) >= 0) | |
184 | #else | |
cbf839b6 KS |
185 | #define SSEQ_LT(a,b) (((short)((a)-(b))) < 0) |
186 | #define SSEQ_LEQ(a,b) (((short)((a)-(b))) <= 0) | |
187 | #define SSEQ_GT(a,b) (((short)((a)-(b))) > 0) | |
188 | #define SSEQ_GEQ(a,b) (((short)((a)-(b))) >= 0) | |
64b784d2 | 189 | #endif |