1/*
 2 * drivers/net/team/team_mode_roundrobin.c - Round-robin mode for team
 3 * Copyright (c) 2011 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
19struct rr_priv {
20	unsigned int sent_packets;
21};
22
23static struct rr_priv *rr_priv(struct team *team)
24{
25	return (struct rr_priv *) &team->mode_priv;
26}
27
28static bool rr_transmit(struct team *team, struct sk_buff *skb)
29{
30	struct team_port *port;
31	int port_index;
32
33	port_index = team_num_to_port_index(team,
34					    rr_priv(team)->sent_packets++);
35	port = team_get_port_by_index_rcu(team, port_index);
36	if (unlikely(!port))
37		goto drop;
38	port = team_get_first_port_txable_rcu(team, port);
39	if (unlikely(!port))
40		goto drop;
41	if (team_dev_queue_xmit(team, port, skb))
42		return false;
43	return true;
44
45drop:
46	dev_kfree_skb_any(skb);
47	return false;
48}
49
50static const struct team_mode_ops rr_mode_ops = {
51	.transmit		= rr_transmit,
52	.port_enter		= team_modeop_port_enter,
53	.port_change_dev_addr	= team_modeop_port_change_dev_addr,
54};
55
56static const struct team_mode rr_mode = {
57	.kind		= "roundrobin",
58	.owner		= THIS_MODULE,
59	.priv_size	= sizeof(struct rr_priv),
60	.ops		= &rr_mode_ops,
 
61};
62
63static int __init rr_init_module(void)
64{
65	return team_mode_register(&rr_mode);
66}
67
68static void __exit rr_cleanup_module(void)
69{
70	team_mode_unregister(&rr_mode);
71}
72
73module_init(rr_init_module);
74module_exit(rr_cleanup_module);
75
76MODULE_LICENSE("GPL v2");
77MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
78MODULE_DESCRIPTION("Round-robin mode for team");
79MODULE_ALIAS("team-mode-roundrobin");

 1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 3 * drivers/net/team/team_mode_roundrobin.c - Round-robin mode for team
 4 * Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com>
 
 
 
 
 
 5 */
 6
 7#include <linux/kernel.h>
 8#include <linux/types.h>
 9#include <linux/module.h>
10#include <linux/init.h>
11#include <linux/errno.h>
12#include <linux/netdevice.h>
13#include <linux/if_team.h>
14
15struct rr_priv {
16	unsigned int sent_packets;
17};
18
19static struct rr_priv *rr_priv(struct team *team)
20{
21	return (struct rr_priv *) &team->mode_priv;
22}
23
24static bool rr_transmit(struct team *team, struct sk_buff *skb)
25{
26	struct team_port *port;
27	int port_index;
28
29	port_index = team_num_to_port_index(team,
30					    rr_priv(team)->sent_packets++);
31	port = team_get_port_by_index_rcu(team, port_index);
32	if (unlikely(!port))
33		goto drop;
34	port = team_get_first_port_txable_rcu(team, port);
35	if (unlikely(!port))
36		goto drop;
37	if (team_dev_queue_xmit(team, port, skb))
38		return false;
39	return true;
40
41drop:
42	dev_kfree_skb_any(skb);
43	return false;
44}
45
46static const struct team_mode_ops rr_mode_ops = {
47	.transmit		= rr_transmit,
48	.port_enter		= team_modeop_port_enter,
49	.port_change_dev_addr	= team_modeop_port_change_dev_addr,
50};
51
52static const struct team_mode rr_mode = {
53	.kind		= "roundrobin",
54	.owner		= THIS_MODULE,
55	.priv_size	= sizeof(struct rr_priv),
56	.ops		= &rr_mode_ops,
57	.lag_tx_type	= NETDEV_LAG_TX_TYPE_ROUNDROBIN,
58};
59
60static int __init rr_init_module(void)
61{
62	return team_mode_register(&rr_mode);
63}
64
65static void __exit rr_cleanup_module(void)
66{
67	team_mode_unregister(&rr_mode);
68}
69
70module_init(rr_init_module);
71module_exit(rr_cleanup_module);
72
73MODULE_LICENSE("GPL v2");
74MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
75MODULE_DESCRIPTION("Round-robin mode for team");
76MODULE_ALIAS_TEAM_MODE("roundrobin");