1 | /* $NetBSD: ieee8023ad_lacp_sm_tx.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_tx.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 | #include <sys/kernel.h> /* hardclock_ticks */ |
37 | |
38 | #include <net/if.h> |
39 | #include <net/if_ether.h> |
40 | |
41 | #include <net/agr/ieee8023_slowprotocols.h> |
42 | #include <net/agr/ieee8023_tlv.h> |
43 | #include <net/agr/ieee8023ad_lacp.h> |
44 | #include <net/agr/ieee8023ad_lacp_impl.h> |
45 | #include <net/agr/ieee8023ad_lacp_sm.h> |
46 | #include <net/agr/ieee8023ad_lacp_debug.h> |
47 | |
48 | /* transmit machine */ |
49 | |
50 | void |
51 | lacp_sm_tx(struct lacp_port *lp) |
52 | { |
53 | int error; |
54 | int now; |
55 | |
56 | if (!(lp->lp_state & LACP_STATE_AGGREGATION) |
57 | #if 1 |
58 | || (!(lp->lp_state & LACP_STATE_ACTIVITY) |
59 | && !(lp->lp_partner.lip_state & LACP_STATE_ACTIVITY)) |
60 | #endif |
61 | ) { |
62 | lp->lp_flags &= ~LACPPORT_NTT; |
63 | } |
64 | |
65 | if (!(lp->lp_flags & LACPPORT_NTT)) { |
66 | return; |
67 | } |
68 | |
69 | /* rate limit */ |
70 | now = hardclock_ticks; |
71 | if ((unsigned int)(now - lp->lp_last_lacpdu_sent) <= |
72 | LACP_FAST_PERIODIC_TIME * hz / 3) { |
73 | return; |
74 | } |
75 | lp->lp_last_lacpdu_sent = now; |
76 | |
77 | error = lacp_xmit_lacpdu(lp); |
78 | |
79 | if (error == 0) { |
80 | lp->lp_flags &= ~LACPPORT_NTT; |
81 | } else { |
82 | LACP_DPRINTF((lp, "lacpdu transmit failure, error %d\n" , |
83 | error)); |
84 | } |
85 | } |
86 | |
87 | void |
88 | lacp_sm_assert_ntt(struct lacp_port *lp) |
89 | { |
90 | |
91 | lp->lp_flags |= LACPPORT_NTT; |
92 | } |
93 | |