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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * drivers/net/team/team_mode_random.c - Random mode for team4 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>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/skbuff.h>12#include <linux/if_team.h>13 14static bool rnd_transmit(struct team *team, struct sk_buff *skb)15{16 struct team_port *port;17 int port_index;18 19 port_index = get_random_u32_below(team->en_port_count);20 port = team_get_port_by_index_rcu(team, port_index);21 if (unlikely(!port))22 goto drop;23 port = team_get_first_port_txable_rcu(team, port);24 if (unlikely(!port))25 goto drop;26 if (team_dev_queue_xmit(team, port, skb))27 return false;28 return true;29 30drop:31 dev_kfree_skb_any(skb);32 return false;33}34 35static const struct team_mode_ops rnd_mode_ops = {36 .transmit = rnd_transmit,37 .port_enter = team_modeop_port_enter,38 .port_change_dev_addr = team_modeop_port_change_dev_addr,39};40 41static const struct team_mode rnd_mode = {42 .kind = "random",43 .owner = THIS_MODULE,44 .ops = &rnd_mode_ops,45 .lag_tx_type = NETDEV_LAG_TX_TYPE_RANDOM,46};47 48static int __init rnd_init_module(void)49{50 return team_mode_register(&rnd_mode);51}52 53static void __exit rnd_cleanup_module(void)54{55 team_mode_unregister(&rnd_mode);56}57 58module_init(rnd_init_module);59module_exit(rnd_cleanup_module);60 61MODULE_LICENSE("GPL v2");62MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");63MODULE_DESCRIPTION("Random mode for team");64MODULE_ALIAS_TEAM_MODE("random");65