/src/openthread/third_party/tcplp/bsdtcp/tcp_seq.h
Line | Count | Source (jump to first uncovered line) |
1 | | /*- |
2 | | * Copyright (c) 1982, 1986, 1993, 1995 |
3 | | * The Regents of the University of California. All rights reserved. |
4 | | * |
5 | | * Redistribution and use in source and binary forms, with or without |
6 | | * modification, are permitted provided that the following conditions |
7 | | * are met: |
8 | | * 1. Redistributions of source code must retain the above copyright |
9 | | * notice, this list of conditions and the following disclaimer. |
10 | | * 2. Redistributions in binary form must reproduce the above copyright |
11 | | * notice, this list of conditions and the following disclaimer in the |
12 | | * documentation and/or other materials provided with the distribution. |
13 | | * 4. Neither the name of the University nor the names of its contributors |
14 | | * may be used to endorse or promote products derived from this software |
15 | | * without specific prior written permission. |
16 | | * |
17 | | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
18 | | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
19 | | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
20 | | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
21 | | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
22 | | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
23 | | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
24 | | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
25 | | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
26 | | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
27 | | * SUCH DAMAGE. |
28 | | * |
29 | | * @(#)tcp_seq.h 8.3 (Berkeley) 6/21/95 |
30 | | * $FreeBSD$ |
31 | | */ |
32 | | |
33 | | #ifndef TCPLP_NETINET_TCP_SEQ_H_ |
34 | | #define TCPLP_NETINET_TCP_SEQ_H_ |
35 | | |
36 | | #include "../tcplp.h" |
37 | | |
38 | | /* |
39 | | * TCP sequence numbers are 32 bit integers operated |
40 | | * on with modular arithmetic. These macros can be |
41 | | * used to compare such integers. |
42 | | */ |
43 | 0 | #define SEQ_LT(a,b) ((int)((a)-(b)) < 0) |
44 | 0 | #define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0) |
45 | 0 | #define SEQ_GT(a,b) ((int)((a)-(b)) > 0) |
46 | 0 | #define SEQ_GEQ(a,b) ((int)((a)-(b)) >= 0) |
47 | | |
48 | 0 | #define SEQ_MIN(a, b) ((SEQ_LT(a, b)) ? (a) : (b)) |
49 | 0 | #define SEQ_MAX(a, b) ((SEQ_GT(a, b)) ? (a) : (b)) |
50 | | |
51 | | /* for modulo comparisons of timestamps */ |
52 | 0 | #define TSTMP_LT(a,b) ((int)((a)-(b)) < 0) |
53 | 0 | #define TSTMP_GT(a,b) ((int)((a)-(b)) > 0) |
54 | 0 | #define TSTMP_GEQ(a,b) ((int)((a)-(b)) >= 0) |
55 | | |
56 | | /* |
57 | | * Macros to initialize tcp sequence numbers for |
58 | | * send and receive from initial send and receive |
59 | | * sequence numbers. |
60 | | */ |
61 | | #define tcp_rcvseqinit(tp) \ |
62 | 0 | (tp)->rcv_adv = (tp)->rcv_nxt = (tp)->irs + 1 |
63 | | |
64 | | #define tcp_sendseqinit(tp) \ |
65 | 0 | (tp)->snd_una = (tp)->snd_nxt = (tp)->snd_max = (tp)->snd_up = \ |
66 | 0 | (tp)->snd_recover = (tp)->iss |
67 | | |
68 | | /* |
69 | | * Clock macros for RFC 1323 timestamps. |
70 | | */ |
71 | 0 | #define TCP_TS_TO_TICKS(_t) ((_t) * hz / 1000) |
72 | | |
73 | | /* Timestamp wrap-around time, 24 days. */ |
74 | 0 | #define TCP_PAWS_IDLE (24 * 24 * 60 * 60 * 1000) |
75 | | |
76 | | /* |
77 | | * tcp_ts_getticks() in ms, should be 1ms < x < 1000ms according to RFC 1323. |
78 | | * We always use 1ms granularity independent of hz. |
79 | | */ |
80 | | static __inline uint32_t |
81 | | tcp_ts_getticks(void) |
82 | 0 | { |
83 | | /* samkumar: This used to be implemented using getmicrouptime(). */ |
84 | 0 | return tcplp_sys_get_millis(); |
85 | 0 | } Unexecuted instantiation: tcp_input.c:tcp_ts_getticks Unexecuted instantiation: tcp_output.c:tcp_ts_getticks Unexecuted instantiation: tcp_reass.c:tcp_ts_getticks Unexecuted instantiation: tcp_sack.c:tcp_ts_getticks Unexecuted instantiation: tcp_subr.c:tcp_ts_getticks Unexecuted instantiation: tcp_timewait.c:tcp_ts_getticks Unexecuted instantiation: tcp_usrreq.c:tcp_ts_getticks Unexecuted instantiation: cc_newreno.c:tcp_ts_getticks |
86 | | |
87 | | #endif /* _NETINET_TCP_SEQ_H_ */ |