| 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 | |