1/*
2 * drivers/net/team/team_mode_broadcast.c - Broadcast mode for team
3 * Copyright (c) 2012 Jiri Pirko <jpirko@redhat.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 */
10
11#include <linux/kernel.h>
12#include <linux/types.h>
13#include <linux/module.h>
14#include <linux/init.h>
15#include <linux/errno.h>
16#include <linux/netdevice.h>
17#include <linux/if_team.h>
18
19static bool bc_transmit(struct team *team, struct sk_buff *skb)
20{
21	struct team_port *cur;
22	struct team_port *last = NULL;
23	struct sk_buff *skb2;
24	bool ret;
25	bool sum_ret = false;
26
27	list_for_each_entry_rcu(cur, &team->port_list, list) {
28		if (team_port_txable(cur)) {
29			if (last) {
30				skb2 = skb_clone(skb, GFP_ATOMIC);
31				if (skb2) {
32					ret = !team_dev_queue_xmit(team, last,
33								   skb2);
34					if (!sum_ret)
35						sum_ret = ret;
36				}
37			}
38			last = cur;
39		}
40	}
41	if (last) {
42		ret = !team_dev_queue_xmit(team, last, skb);
43		if (!sum_ret)
44			sum_ret = ret;
45	}
46	return sum_ret;
47}
48
49static const struct team_mode_ops bc_mode_ops = {
50	.transmit		= bc_transmit,
51	.port_enter		= team_modeop_port_enter,
52	.port_change_dev_addr	= team_modeop_port_change_dev_addr,
53};
54
55static const struct team_mode bc_mode = {
56	.kind		= "broadcast",
57	.owner		= THIS_MODULE,
58	.ops		= &bc_mode_ops,
59};
60
61static int __init bc_init_module(void)
62{
63	return team_mode_register(&bc_mode);
64}
65
66static void __exit bc_cleanup_module(void)
67{
68	team_mode_unregister(&bc_mode);
69}
70
71module_init(bc_init_module);
72module_exit(bc_cleanup_module);
73
74MODULE_LICENSE("GPL v2");
75MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
76MODULE_DESCRIPTION("Broadcast mode for team");
77MODULE_ALIAS("team-mode-broadcast");
78