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 | |
49 | void |
50 | lacp_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 | |
79 | void |
80 | lacp_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 | |
105 | void |
106 | lacp_sm_ptx_timer(struct lacp_port *lp) |
107 | { |
108 | |
109 | lacp_sm_assert_ntt(lp); |
110 | } |
111 | |