blob: 0aa234118c0351f760e28c666602afadf4bb0133 [file] [log] [blame]
Jiri Pirko3d249d42011-11-11 22:16:48 +00001/*
Jiri Pirko0d572e42012-06-19 05:54:09 +00002 * drivers/net/team/team_mode_roundrobin.c - Round-robin mode for team
Jiri Pirko3d249d42011-11-11 22:16:48 +00003 * 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
Jiri Pirko3d249d42011-11-11 22:16:48 +000028static bool rr_transmit(struct team *team, struct sk_buff *skb)
29{
30 struct team_port *port;
31 int port_index;
32
Jiri Pirko735d3812013-06-10 17:42:25 +020033 port_index = team_num_to_port_index(team,
34 rr_priv(team)->sent_packets++);
Jiri Pirko3d249d42011-11-11 22:16:48 +000035 port = team_get_port_by_index_rcu(team, port_index);
Jiri Pirko76c455d2013-06-08 15:00:53 +020036 if (unlikely(!port))
37 goto drop;
Jiri Pirko753f9932013-03-06 01:31:13 +000038 port = team_get_first_port_txable_rcu(team, port);
Jiri Pirko3d249d42011-11-11 22:16:48 +000039 if (unlikely(!port))
40 goto drop;
Jiri Pirkobd2d0832012-07-17 05:22:36 +000041 if (team_dev_queue_xmit(team, port, skb))
Jiri Pirko3d249d42011-11-11 22:16:48 +000042 return false;
43 return true;
44
45drop:
46 dev_kfree_skb_any(skb);
47 return false;
48}
49
Jiri Pirko3d249d42011-11-11 22:16:48 +000050static const struct team_mode_ops rr_mode_ops = {
51 .transmit = rr_transmit,
Jiri Pirkoacbba0d2013-03-06 01:31:12 +000052 .port_enter = team_modeop_port_enter,
53 .port_change_dev_addr = team_modeop_port_change_dev_addr,
Jiri Pirko3d249d42011-11-11 22:16:48 +000054};
55
Jiri Pirko04027882012-06-19 05:54:03 +000056static const struct team_mode rr_mode = {
Jiri Pirko3d249d42011-11-11 22:16:48 +000057 .kind = "roundrobin",
58 .owner = THIS_MODULE,
59 .priv_size = sizeof(struct rr_priv),
60 .ops = &rr_mode_ops,
Jiri Pirko8fd72852015-12-03 12:12:13 +010061 .lag_tx_type = NETDEV_LAG_TX_TYPE_ROUNDROBIN,
Jiri Pirko3d249d42011-11-11 22:16:48 +000062};
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");