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