| 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 | |