team: add broadcast mode (5fc88991) · Commits · e / devices / android_kernel_teracube_mt6765

drivers/net/team/Kconfig

+12 −1

Original line number	Diff line number	Diff line
		@@ -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.

drivers/net/team/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -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

drivers/net/team/team_mode_broadcast.c

0 → 100644

+88 −0

Original line number	Diff line number	Diff line
		/*
		* 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");