Module Name: src
Committed By: yamaguchi
Date: Thu Apr 4 09:19:43 UTC 2024
Modified Files:
src/sys/net/lagg: if_lagg.c if_lagg_lacp.c
Log Message:
Added comments to lagg(4)
To generate a diff of this commit:
cvs rdiff -u -r1.66 -r1.67 src/sys/net/lagg/if_lagg.c
cvs rdiff -u -r1.36 -r1.37 src/sys/net/lagg/if_lagg_lacp.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/net/lagg/if_lagg.c
diff -u src/sys/net/lagg/if_lagg.c:1.66 src/sys/net/lagg/if_lagg.c:1.67
--- src/sys/net/lagg/if_lagg.c:1.66 Thu Apr 4 08:50:58 2024
+++ src/sys/net/lagg/if_lagg.c Thu Apr 4 09:19:42 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: if_lagg.c,v 1.66 2024/04/04 08:50:58 yamaguchi Exp $ */
+/* $NetBSD: if_lagg.c,v 1.67 2024/04/04 09:19:42 yamaguchi Exp $ */
/*
* Copyright (c) 2005, 2006 Reyk Floeter <[email protected]>
@@ -20,7 +20,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_lagg.c,v 1.66 2024/04/04 08:50:58 yamaguchi Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_lagg.c,v 1.67 2024/04/04 09:19:42 yamaguchi Exp $");
#ifdef _KERNEL_OPT
#include "opt_inet.h"
@@ -2165,6 +2165,7 @@ lagg_port_setsadl(struct lagg_port *lp,
if (ifp_port->if_init != NULL) {
error = 0;
+ /* Apply updated ifp_port->if_sadl to the device */
if (ISSET(ifp_port->if_flags, IFF_RUNNING))
error = if_init(ifp_port);
@@ -2929,7 +2930,9 @@ lagg_chg_sadl(struct ifnet *ifp, const u
error = 0;
ifa_lla = NULL;
+ /* Renew all AF_LINK address to update sdl_type */
while (1) {
+ /* find a Link-Level address that has the previous sdl_type */
s = pserialize_read_enter();
IFADDR_READER_FOREACH(ifa_cur, ifp) {
sdl = satocsdl(ifa_cur->ifa_addr);
@@ -2945,7 +2948,10 @@ lagg_chg_sadl(struct ifnet *ifp, const u
if (ifa_cur == NULL)
break;
-
+ /*
+ * create a new address that has new sdl_type,
+ * and copy address from the previous.
+ */
ifa_next = if_dl_create(ifp, &nsdl);
if (ifa_next == NULL) {
error = ENOMEM;
@@ -2957,6 +2963,7 @@ lagg_chg_sadl(struct ifnet *ifp, const u
CLLADDR(sdl), ifp->if_addrlen);
ifa_insert(ifp, ifa_next);
+ /* the next Link-Level address is already set */
if (ifa_lla == NULL &&
memcmp(CLLADDR(sdl), lla, lla_len) == 0) {
ifa_lla = ifa_next;
@@ -2972,6 +2979,7 @@ lagg_chg_sadl(struct ifnet *ifp, const u
ifafree(ifa_cur);
}
+ /* remove the old address */
ifaref(ifa_cur);
ifa_release(ifa_cur, &psref_cur);
ifa_remove(ifp, ifa_cur);
@@ -2981,6 +2989,7 @@ lagg_chg_sadl(struct ifnet *ifp, const u
ifa_release(ifa_next, &psref_next);
}
+ /* acquire or create the next Link-Level address */
if (ifa_lla != NULL) {
ifa_next = ifa_lla;
@@ -3000,13 +3009,19 @@ lagg_chg_sadl(struct ifnet *ifp, const u
ifa_insert(ifp, ifa_next);
}
+ /* Activate the next Link-Level address */
if (ifa_next != ifp->if_dl) {
+ /* save the current address */
ifa_cur = ifp->if_dl;
if (ifa_cur != NULL)
ifa_acquire(ifa_cur, &psref_cur);
if_activate_sadl(ifp, ifa_next, nsdl);
+ /*
+ * free the saved address after switching,
+ * if the address is not if_hwdl.
+ */
if (ifa_cur != NULL) {
if (ifa_cur != ifp->if_hwdl) {
ifaref(ifa_cur);
Index: src/sys/net/lagg/if_lagg_lacp.c
diff -u src/sys/net/lagg/if_lagg_lacp.c:1.36 src/sys/net/lagg/if_lagg_lacp.c:1.37
--- src/sys/net/lagg/if_lagg_lacp.c:1.36 Thu Apr 4 09:09:24 2024
+++ src/sys/net/lagg/if_lagg_lacp.c Thu Apr 4 09:19:42 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: if_lagg_lacp.c,v 1.36 2024/04/04 09:09:24 yamaguchi Exp $ */
+/* $NetBSD: if_lagg_lacp.c,v 1.37 2024/04/04 09:19:42 yamaguchi Exp $ */
/*-
* SPDX-License-Identifier: BSD-2-Clause-NetBSD
@@ -31,7 +31,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_lagg_lacp.c,v 1.36 2024/04/04 09:09:24 yamaguchi Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_lagg_lacp.c,v 1.37 2024/04/04 09:19:42 yamaguchi Exp $");
#ifdef _KERNEL_OPT
#include "opt_lagg.h"
@@ -2718,6 +2718,12 @@ lacp_dump_markertlv(const struct markerd
}
}
+/*
+ * lacp_linkstate:
+ * callback on link state changed.
+ * enable, disable or reset LACP processing on the physical port.
+ */
+
static void
lacp_linkstate(struct lagg_proto_softc *xlsc, struct lagg_port *lp)
{
