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/errno.h> 12 #include <linux/netdevice.h> 13 #include <linux/if_team.h> 14 15 static bool bc_transmit(struct team *team, struct sk_buff *skb) 16 { 17 struct team_port *cur; 18 struct team_port *last = NULL; 19 struct sk_buff *skb2; 20 bool ret; 21 bool sum_ret = false; 22 23 list_for_each_entry_rcu(cur, &team->port_list, list) { 24 if (team_port_txable(cur)) { 25 if (last) { 26 skb2 = skb_clone(skb, GFP_ATOMIC); 27 if (skb2) { 28 ret = !team_dev_queue_xmit(team, last, 29 skb2); 30 if (!sum_ret) 31 sum_ret = ret; 32 } 33 } 34 last = cur; 35 } 36 } 37 if (last) { 38 ret = !team_dev_queue_xmit(team, last, skb); 39 if (!sum_ret) 40 sum_ret = ret; 41 } 42 return sum_ret; 43 } 44 45 static const struct team_mode_ops bc_mode_ops = { 46 .transmit = bc_transmit, 47 .port_enter = team_modeop_port_enter, 48 .port_change_dev_addr = team_modeop_port_change_dev_addr, 49 }; 50 51 static const struct team_mode bc_mode = { 52 .kind = "broadcast", 53 .owner = THIS_MODULE, 54 .ops = &bc_mode_ops, 55 .lag_tx_type = NETDEV_LAG_TX_TYPE_BROADCAST, 56 }; 57 58 static int __init bc_init_module(void) 59 { 60 return team_mode_register(&bc_mode); 61 } 62 63 static void __exit bc_cleanup_module(void) 64 { 65 team_mode_unregister(&bc_mode); 66 } 67 68 module_init(bc_init_module); 69 module_exit(bc_cleanup_module); 70 71 MODULE_LICENSE("GPL v2"); 72 MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>"); 73 MODULE_DESCRIPTION("Broadcast mode for team"); 74 MODULE_ALIAS_TEAM_MODE("broadcast"); 75