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Date: Tue, 1 Sep 2015 17:43:01 +0200
From: Ahmed Amamou <ahmed@...di.net>
To: netdev@...r.kernel.org
Cc: William Dauchy <william@...di.net>, Ahmed Amamou <ahmed@...di.net>,
Kamel Haddadou <kamel@...di.net>
Subject: [PATCH RFC v2 06/21] net: rbridge: enable/disable TRILL capability
enable switching TRILL capability state via sysfs command
Signed-off-by: Ahmed Amamou <ahmed@...di.net>
Signed-off-by: William Dauchy <william@...di.net>
Signed-off-by: Kamel Haddadou <kamel@...di.net>
---
net/bridge/Makefile | 2 ++
net/bridge/br_private.h | 5 ++++
net/bridge/rbr.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 78 insertions(+)
create mode 100644 net/bridge/rbr.c
diff --git a/net/bridge/Makefile b/net/bridge/Makefile
index a1cda5d..27da487 100644
--- a/net/bridge/Makefile
+++ b/net/bridge/Makefile
@@ -21,3 +21,5 @@ bridge-$(CONFIG_BRIDGE_IGMP_SNOOPING) += br_multicast.o br_mdb.o
bridge-$(CONFIG_BRIDGE_VLAN_FILTERING) += br_vlan.o
obj-$(CONFIG_NETFILTER) += netfilter/
+
+bridge-$(CONFIG_TRILL) += rbr.o
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index ff757da..67da2ae 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -834,6 +834,11 @@ int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
+/* rbr.c */
+#ifdef CONFIG_TRILL
+void br_trill_set_enabled(struct net_bridge *br, unsigned long val);
+#endif
+
/* br_stp_bpdu.c */
struct stp_proto;
void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
diff --git a/net/bridge/rbr.c b/net/bridge/rbr.c
new file mode 100644
index 0000000..c554743
--- /dev/null
+++ b/net/bridge/rbr.c
@@ -0,0 +1,71 @@
+/*
+ * Generic parts
+ * Linux ethernet Rbridge
+ *
+ * Authors:
+ * Ahmed AMAMOU <ahmed@...di.net>
+ * Kamel Haddadou <kamel@...di.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include "br_private.h"
+#include "rbr_private.h"
+
+static struct rbr *add_rbr(struct net_bridge *br)
+{
+ struct rbr *rbr;
+
+ if (!br->rbr) {
+ rbr = kzalloc(sizeof(*rbr), GFP_KERNEL);
+ if (!rbr)
+ return NULL;
+
+ rbr->br = br;
+ rbr->nick = RBRIDGE_NICKNAME_NONE;
+ rbr->treeroot = RBRIDGE_NICKNAME_NONE;
+ return rbr;
+ }
+
+ return br->rbr;
+}
+
+static void br_trill_start(struct net_bridge *br)
+{
+ /* Disable STP if it is already enabled */
+
+ if (br->stp_enabled != BR_NO_STP)
+ br_stp_set_enabled(br, false);
+ br->rbr = add_rbr(br);
+ if (br->rbr)
+ br->trill_enabled = BR_TRILL;
+ else
+ pr_warn("RBridge allocation for bridge '%s' failed\n",
+ br->dev->name);
+}
+
+static void br_trill_stop(struct net_bridge *br)
+{
+ struct rbr *old;
+
+ spin_lock_bh(&br->lock);
+ br->trill_enabled = BR_NO_TRILL;
+ spin_unlock_bh(&br->lock);
+ old = br->rbr;
+ br->rbr = NULL;
+ if (likely(old))
+ kfree(old);
+}
+
+void br_trill_set_enabled(struct net_bridge *br, unsigned long val)
+{
+ if (val) {
+ if (br->trill_enabled == BR_NO_TRILL)
+ br_trill_start(br);
+ } else {
+ if (br->trill_enabled != BR_NO_TRILL)
+ br_trill_stop(br);
+ }
+}
--
2.1.4
--
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