X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fnetifd.git;a=blobdiff_plain;f=bridge.c;h=7409a5079bc77264d9385987545b108500558410;hp=46967c885e071cfb7c469dc6919f30caf3ae27ea;hb=587655b45085fcfc9c575792640c21c6ffb24f42;hpb=e472b121daaef2efc3301445207e4c9ad69b06ae;ds=sidebyside

diff --git a/bridge.c b/bridge.c
index 46967c8..7409a50 100644
--- a/bridge.c
+++ b/bridge.c
@@ -1,3 +1,16 @@
+/*
+ * netifd - network interface daemon
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -13,6 +26,7 @@ enum {
 	BRIDGE_ATTR_IFNAME,
 	BRIDGE_ATTR_STP,
 	BRIDGE_ATTR_FORWARD_DELAY,
+	BRIDGE_ATTR_PRIORITY,
 	BRIDGE_ATTR_IGMP_SNOOP,
 	BRIDGE_ATTR_AGEING_TIME,
 	BRIDGE_ATTR_HELLO_TIME,
@@ -24,6 +38,7 @@ static const struct blobmsg_policy bridge_attrs[__BRIDGE_ATTR_MAX] = {
 	[BRIDGE_ATTR_IFNAME] = { "ifname", BLOBMSG_TYPE_ARRAY },
 	[BRIDGE_ATTR_STP] = { "stp", BLOBMSG_TYPE_BOOL },
 	[BRIDGE_ATTR_FORWARD_DELAY] = { "forward_delay", BLOBMSG_TYPE_INT32 },
+	[BRIDGE_ATTR_PRIORITY] = { "priority", BLOBMSG_TYPE_INT32 },
 	[BRIDGE_ATTR_AGEING_TIME] = { "ageing_time", BLOBMSG_TYPE_INT32 },
 	[BRIDGE_ATTR_HELLO_TIME] = { "hello_time", BLOBMSG_TYPE_INT32 },
 	[BRIDGE_ATTR_MAX_AGE] = { "max_age", BLOBMSG_TYPE_INT32 },
@@ -71,6 +86,7 @@ struct bridge_state {
 	bool active;
 	bool force_active;
 
+	struct bridge_member *primary_port;
 	struct vlist_tree members;
 	int n_present;
 };
@@ -83,6 +99,34 @@ struct bridge_member {
 	char name[];
 };
 
+static void
+bridge_reset_primary(struct bridge_state *bst)
+{
+	struct bridge_member *bm;
+
+	if (!bst->primary_port &&
+	    (bst->dev.settings.flags & DEV_OPT_MACADDR))
+		return;
+
+	bst->primary_port = NULL;
+	bst->dev.settings.flags &= ~DEV_OPT_MACADDR;
+	vlist_for_each_element(&bst->members, bm, node) {
+		uint8_t *macaddr;
+
+		if (!bm->present)
+			continue;
+
+		bst->primary_port = bm;
+		if (bm->dev.dev->settings.flags & DEV_OPT_MACADDR)
+			macaddr = bm->dev.dev->settings.macaddr;
+		else
+			macaddr = bm->dev.dev->orig_settings.macaddr;
+		memcpy(bst->dev.settings.macaddr, macaddr, 6);
+		bst->dev.settings.flags |= DEV_OPT_MACADDR;
+		return;
+	}
+}
+
 static int
 bridge_disable_member(struct bridge_member *bm)
 {
@@ -132,6 +176,9 @@ bridge_remove_member(struct bridge_member *bm)
 	if (!bm->present)
 		return;
 
+	if (bm == bst->primary_port);
+		bridge_reset_primary(bst);
+
 	if (bst->dev.active)
 		bridge_disable_member(bm);
 
@@ -144,6 +191,29 @@ bridge_remove_member(struct bridge_member *bm)
 }
 
 static void
+bridge_free_member(struct bridge_member *bm)
+{
+	struct device *dev = bm->dev.dev;
+
+	bridge_remove_member(bm);
+	device_remove_user(&bm->dev);
+
+	/*
+	 * When reloading the config and moving a device from one bridge to
+	 * another, the other bridge may have tried to claim this device
+	 * before it was removed here.
+	 * Ensure that claiming the device is retried by toggling its present
+	 * state
+	 */
+	if (dev->present) {
+		device_set_present(dev, false);
+		device_set_present(dev, true);
+	}
+
+	free(bm);
+}
+
+static void
 bridge_member_cb(struct device_user *dev, enum device_event ev)
 {
 	struct bridge_member *bm = container_of(dev, struct bridge_member, dev);
@@ -215,6 +285,7 @@ bridge_set_up(struct bridge_state *bst)
 		return -ENOENT;
 	}
 
+	bridge_reset_primary(bst);
 	ret = bst->set_state(&bst->dev, true);
 	if (ret < 0)
 		bridge_set_down(bst);
@@ -277,9 +348,7 @@ bridge_member_update(struct vlist_tree *tree, struct vlist_node *node_new,
 
 	if (node_old) {
 		bm = container_of(node_old, struct bridge_member, node);
-		bridge_remove_member(bm);
-		device_remove_user(&bm->dev);
-		free(bm);
+		bridge_free_member(bm);
 	}
 }
 
@@ -343,7 +412,6 @@ bridge_free(struct device *dev)
 {
 	struct bridge_state *bst;
 
-	device_cleanup(dev);
 	bst = container_of(dev, struct bridge_state, dev);
 	vlist_flush_all(&bst->members);
 	free(bst);
@@ -393,9 +461,10 @@ bridge_apply_settings(struct bridge_state *bst, struct blob_attr **tb)
 	struct blob_attr *cur;
 
 	/* defaults */
-	cfg->stp = true;
+	cfg->stp = false;
 	cfg->forward_delay = 2;
-	cfg->igmp_snoop = true;
+	cfg->igmp_snoop = false;
+	cfg->priority = 0x7FFF;
 
 	if ((cur = tb[BRIDGE_ATTR_STP]))
 		cfg->stp = blobmsg_get_bool(cur);
@@ -403,6 +472,9 @@ bridge_apply_settings(struct bridge_state *bst, struct blob_attr **tb)
 	if ((cur = tb[BRIDGE_ATTR_FORWARD_DELAY]))
 		cfg->forward_delay = blobmsg_get_u32(cur);
 
+	if ((cur = tb[BRIDGE_ATTR_PRIORITY]))
+		cfg->priority = blobmsg_get_u32(cur);
+
 	if ((cur = tb[BRIDGE_ATTR_IGMP_SNOOP]))
 		cfg->igmp_snoop = blobmsg_get_bool(cur);
 
@@ -497,5 +569,3 @@ bridge_create(const char *name, struct blob_attr *attr)
 
 	return dev;
 }
-
-