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