1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * drivers/net/team/team_mode_broadcast.c - Broadcast mode for team 4 * Copyright (c) 2012 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 14 static bool bc_transmit(struct team *team, struct sk_buff *skb) 15 { 16 struct team_port *cur; 17 struct team_port *last = NULL; 18 struct sk_buff *skb2; 19 bool ret; 20 bool sum_ret = false; 21 22 list_for_each_entry_rcu(cur, &team->port_list, list) { 23 if (team_port_txable(cur)) { 24 if (last) { 25 skb2 = skb_clone(skb, GFP_ATOMIC); 26 if (skb2) { 27 ret = !team_dev_queue_xmit(team, last, 28 skb2); 29 if (!sum_ret) 30 sum_ret = ret; 31 } 32 } 33 last = cur; 34 } 35 } 36 if (last) { 37 ret = !team_dev_queue_xmit(team, last, skb); 38 if (!sum_ret) 39 sum_ret = ret; 40 } 41 return sum_ret; 42 } 43 44 static const struct team_mode_ops bc_mode_ops = { 45 .transmit = bc_transmit, 46 .port_enter = team_modeop_port_enter, 47 .port_change_dev_addr = team_modeop_port_change_dev_addr, 48 }; 49 50 static const struct team_mode bc_mode = { 51 .kind = "broadcast", 52 .owner = THIS_MODULE, 53 .ops = &bc_mode_ops, 54 .lag_tx_type = NETDEV_LAG_TX_TYPE_BROADCAST, 55 }; 56 57 static int __init bc_init_module(void) 58 { 59 return team_mode_register(&bc_mode); 60 } 61 62 static void __exit bc_cleanup_module(void) 63 { 64 team_mode_unregister(&bc_mode); 65 } 66 67 module_init(bc_init_module); 68 module_exit(bc_cleanup_module); 69 70 MODULE_LICENSE("GPL v2"); 71 MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>"); 72 MODULE_DESCRIPTION("Broadcast mode for team"); 73 MODULE_ALIAS_TEAM_MODE("broadcast"); 74