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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * drivers/net/team/team_mode_roundrobin.c - Round-robin mode for team4 * 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");76