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      1 /*	$NetBSD: ieee8023ad_lacp_timer.c,v 1.6 2021/11/30 01:17:02 yamaguchi 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_timer.c,v 1.6 2021/11/30 01:17:02 yamaguchi Exp $");
     31 
     32 #include <sys/param.h>
     33 #include <sys/callout.h>
     34 #include <sys/systm.h>
     35 
     36 #include <net/if.h>
     37 #include <net/if_ether.h>
     38 #include <net/ether_slowprotocols.h>
     39 
     40 #include <net/agr/ieee8023_tlv.h>
     41 #include <net/agr/ieee8023ad_lacp.h>
     42 #include <net/agr/ieee8023ad_lacp_impl.h>
     43 #include <net/agr/ieee8023ad_lacp_sm.h>
     44 
     45 typedef void (*lacp_timer_func_t)(struct lacp_port *);
     46 
     47 static const lacp_timer_func_t lacp_timer_funcs[LACP_NTIMER] = {
     48 	[LACP_TIMER_CURRENT_WHILE] = lacp_sm_rx_timer,
     49 	[LACP_TIMER_PERIODIC] = lacp_sm_ptx_timer,
     50 	[LACP_TIMER_WAIT_WHILE] = lacp_sm_mux_timer,
     51 };
     52 
     53 void
     54 lacp_run_timers(struct lacp_port *lp)
     55 {
     56 	int i;
     57 
     58 	for (i = 0; i < LACP_NTIMER; i++) {
     59 		KASSERT(lp->lp_timer[i] >= 0);
     60 		if (lp->lp_timer[i] == 0) {
     61 			continue;
     62 		} else if (--lp->lp_timer[i] <= 0) {
     63 			if (lacp_timer_funcs[i]) {
     64 				(*lacp_timer_funcs[i])(lp);
     65 			}
     66 		}
     67 	}
     68 }
     69