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

 
 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	.lag_tx_type	= NETDEV_LAG_TX_TYPE_ROUNDROBIN,
62};
63
64static int __init rr_init_module(void)
65{
66	return team_mode_register(&rr_mode);
67}
68
69static void __exit rr_cleanup_module(void)
70{
71	team_mode_unregister(&rr_mode);
72}
73
74module_init(rr_init_module);
75module_exit(rr_cleanup_module);
76
77MODULE_LICENSE("GPL v2");
78MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
79MODULE_DESCRIPTION("Round-robin mode for team");
80MODULE_ALIAS("team-mode-roundrobin");