1/* $NetBSD: ieee8023ad_lacp_sm_ptx.c,v 1.3 2005/12/11 12:24:54 christos Exp $ */
2
3/*-
4 * Copyright (c)2005 YAMAMOTO Takashi,
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__KERNEL_RCSID(0, "$NetBSD: ieee8023ad_lacp_sm_ptx.c,v 1.3 2005/12/11 12:24:54 christos Exp $");
31
32#include <sys/param.h>
33#include <sys/callout.h>
34#include <sys/mbuf.h>
35#include <sys/systm.h>
36
37#include <net/if.h>
38#include <net/if_ether.h>
39
40#include <net/agr/ieee8023_slowprotocols.h>
41#include <net/agr/ieee8023_tlv.h>
42#include <net/agr/ieee8023ad_lacp.h>
43#include <net/agr/ieee8023ad_lacp_impl.h>
44#include <net/agr/ieee8023ad_lacp_sm.h>
45#include <net/agr/ieee8023ad_lacp_debug.h>
46
47/* periodic transmit machine */
48
49void
50lacp_sm_ptx_update_timeout(struct lacp_port *lp, uint8_t oldpstate)
51{
52
53 if (LACP_STATE_EQ(oldpstate, lp->lp_partner.lip_state,
54 LACP_STATE_TIMEOUT)) {
55 return;
56 }
57
58 LACP_DPRINTF((lp, "partner timeout changed\n"));
59
60 /*
61 * FAST_PERIODIC -> SLOW_PERIODIC
62 * or
63 * SLOW_PERIODIC (-> PERIODIC_TX) -> FAST_PERIODIC
64 *
65 * let lacp_sm_ptx_tx_schedule to update timeout.
66 */
67
68 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC);
69
70 /*
71 * if timeout has been shortened, assert NTT.
72 */
73
74 if ((lp->lp_partner.lip_state & LACP_STATE_TIMEOUT)) {
75 lacp_sm_assert_ntt(lp);
76 }
77}
78
79void
80lacp_sm_ptx_tx_schedule(struct lacp_port *lp)
81{
82 int timeout;
83
84 if (!(lp->lp_state & LACP_STATE_ACTIVITY) &&
85 !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) {
86
87 /*
88 * NO_PERIODIC
89 */
90
91 LACP_TIMER_DISARM(lp, LACP_TIMER_PERIODIC);
92 return;
93 }
94
95 if (LACP_TIMER_ISARMED(lp, LACP_TIMER_PERIODIC)) {
96 return;
97 }
98
99 timeout = (lp->lp_partner.lip_state & LACP_STATE_TIMEOUT) ?
100 LACP_FAST_PERIODIC_TIME : LACP_SLOW_PERIODIC_TIME;
101
102 LACP_TIMER_ARM(lp, LACP_TIMER_PERIODIC, timeout);
103}
104
105void
106lacp_sm_ptx_timer(struct lacp_port *lp)
107{
108
109 lacp_sm_assert_ntt(lp);
110}
111