team: add broadcast mode

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 101 insertions, 1 deletions

diff --git a/drivers/net/team/Kconfig b/drivers/net/team/Kconfig
index 89024d5fc33a..6a7260b03a1e 100644
--- a/drivers/net/team/Kconfig
+++ b/drivers/net/team/Kconfig
@@ -15,6 +15,17 @@ menuconfig NET_TEAM
 
 if NET_TEAM
 
+config NET_TEAM_MODE_BROADCAST
+        tristate "Broadcast mode support"
+        depends on NET_TEAM
+        ---help---
+          Basic mode where packets are transmitted always by all suitable ports.
+
+          All added ports are setup to have team's mac address.
+
+          To compile this team mode as a module, choose M here: the module
+          will be called team_mode_broadcast.
+
 config NET_TEAM_MODE_ROUNDROBIN
         tristate "Round-robin mode support"
         depends on NET_TEAM
@@ -22,7 +33,7 @@ config NET_TEAM_MODE_ROUNDROBIN
           Basic mode where port used for transmitting packets is selected in
           round-robin fashion using packet counter.
 
-          All added ports are setup to have bond's mac address.
+          All added ports are setup to have team's mac address.
 
           To compile this team mode as a module, choose M here: the module
           will be called team_mode_roundrobin.
diff --git a/drivers/net/team/Makefile b/drivers/net/team/Makefile
index fb9f4c1c51ff..975763014e5a 100644
--- a/drivers/net/team/Makefile
+++ b/drivers/net/team/Makefile
@@ -3,6 +3,7 @@
 #
 
 obj-$(CONFIG_NET_TEAM) += team.o
+obj-$(CONFIG_NET_TEAM_MODE_BROADCAST) += team_mode_broadcast.o
 obj-$(CONFIG_NET_TEAM_MODE_ROUNDROBIN) += team_mode_roundrobin.o
 obj-$(CONFIG_NET_TEAM_MODE_ACTIVEBACKUP) += team_mode_activebackup.o
 obj-$(CONFIG_NET_TEAM_MODE_LOADBALANCE) += team_mode_loadbalance.o
diff --git a/drivers/net/team/team_mode_broadcast.c b/drivers/net/team/team_mode_broadcast.c
new file mode 100644
index 000000000000..5562345e9cef
--- /dev/null
+++ b/drivers/net/team/team_mode_broadcast.c
@@ -0,0 +1,88 @@
+/*
+ * drivers/net/team/team_mode_broadcast.c - Broadcast mode for team
+ * Copyright (c) 2012 Jiri Pirko <jpirko@redhat.com>
+ *
+ * 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 <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/if_team.h>
+
+static bool bc_transmit(struct team *team, struct sk_buff *skb)
+{
+        struct team_port *cur;
+        struct team_port *last = NULL;
+        struct sk_buff *skb2;
+        bool ret;
+        bool sum_ret = false;
+
+        list_for_each_entry_rcu(cur, &team->port_list, list) {
+                if (team_port_txable(cur)) {
+                        if (last) {
+                                skb2 = skb_clone(skb, GFP_ATOMIC);
+                                if (skb2) {
+                                        skb2->dev = last->dev;
+                                        ret = dev_queue_xmit(skb2);
+                                        if (!sum_ret)
+                                                sum_ret = ret;
+                                }
+                        }
+                        last = cur;
+                }
+        }
+        if (last) {
+                skb->dev = last->dev;
+                ret = dev_queue_xmit(skb);
+                if (!sum_ret)
+                        sum_ret = ret;
+        }
+        return sum_ret;
+}
+
+static int bc_port_enter(struct team *team, struct team_port *port)
+{
+        return team_port_set_team_mac(port);
+}
+
+static void bc_port_change_mac(struct team *team, struct team_port *port)
+{
+        team_port_set_team_mac(port);
+}
+
+static const struct team_mode_ops bc_mode_ops = {
+        .transmit               = bc_transmit,
+        .port_enter             = bc_port_enter,
+        .port_change_mac        = bc_port_change_mac,
+};
+
+static const struct team_mode bc_mode = {
+        .kind           = "broadcast",
+        .owner          = THIS_MODULE,
+        .ops            = &bc_mode_ops,
+};
+
+static int __init bc_init_module(void)
+{
+        return team_mode_register(&bc_mode);
+}
+
+static void __exit bc_cleanup_module(void)
+{
+        team_mode_unregister(&bc_mode);
+}
+
+module_init(bc_init_module);
+module_exit(bc_cleanup_module);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
+MODULE_DESCRIPTION("Broadcast mode for team");
+MODULE_ALIAS("team-mode-broadcast");