projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 3d249d4c | 1 | /* |
| 0d572e45 | 2 | * drivers/net/team/team_mode_roundrobin.c - Round-robin mode for team |
| 3d249d4c JP |
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 | ||
| 19 | struct rr_priv { | |
| 20 | unsigned int sent_packets; | |
| 21 | }; | |
| 22 | ||
| 23 | static struct rr_priv *rr_priv(struct team *team) | |
| 24 | { | |
| 25 | return (struct rr_priv *) &team->mode_priv; | |
| 26 | } | |
| 27 | ||
| 3d249d4c JP |
28 | static bool rr_transmit(struct team *team, struct sk_buff *skb) |
| 29 | { | |
| 30 | struct team_port *port; | |
| 31 | int port_index; | |
| 32 | ||
| 735d381f JP |
33 | port_index = team_num_to_port_index(team, |
| 34 | rr_priv(team)->sent_packets++); | |
| 3d249d4c | 35 | port = team_get_port_by_index_rcu(team, port_index); |
| 76c455de JP |
36 | if (unlikely(!port)) |
| 37 | goto drop; | |
| 753f9939 | 38 | port = team_get_first_port_txable_rcu(team, port); |
| 3d249d4c JP |
39 | if (unlikely(!port)) |
| 40 | goto drop; | |
| bd2d0837 | 41 | if (team_dev_queue_xmit(team, port, skb)) |
| 3d249d4c JP |
42 | return false; |
| 43 | return true; | |
| 44 | ||
| 45 | drop: | |
| 46 | dev_kfree_skb_any(skb); | |
| 47 | return false; | |
| 48 | } | |
| 49 | ||
| 3d249d4c JP |
50 | static const struct team_mode_ops rr_mode_ops = { |
| 51 | .transmit = rr_transmit, | |
| acbba0d0 JP |
52 | .port_enter = team_modeop_port_enter, |
| 53 | .port_change_dev_addr = team_modeop_port_change_dev_addr, | |
| 3d249d4c JP |
54 | }; |
| 55 | ||
| 0402788a | 56 | static const struct team_mode rr_mode = { |
| 3d249d4c JP |
57 | .kind = "roundrobin", |
| 58 | .owner = THIS_MODULE, | |
| 59 | .priv_size = sizeof(struct rr_priv), | |
| 60 | .ops = &rr_mode_ops, | |
| 8fd72856 | 61 | .lag_tx_type = NETDEV_LAG_TX_TYPE_ROUNDROBIN, |
| 3d249d4c JP |
62 | }; |
| 63 | ||
| 64 | static int __init rr_init_module(void) | |
| 65 | { | |
| 66 | return team_mode_register(&rr_mode); | |
| 67 | } | |
| 68 | ||
| 69 | static void __exit rr_cleanup_module(void) | |
| 70 | { | |
| 71 | team_mode_unregister(&rr_mode); | |
| 72 | } | |
| 73 | ||
| 74 | module_init(rr_init_module); | |
| 75 | module_exit(rr_cleanup_module); | |
| 76 | ||
| 77 | MODULE_LICENSE("GPL v2"); | |
| 78 | MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>"); | |
| 79 | MODULE_DESCRIPTION("Round-robin mode for team"); | |
| 3a5f8997 | 80 | MODULE_ALIAS_TEAM_MODE("roundrobin"); |