1 /* 2 * drivers/net/team/team_mode_broadcast.c - Broadcast mode for team 3 * Copyright (c) 2012 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 static bool bc_transmit(struct team *team, struct sk_buff *skb) 20 { 21 struct team_port *cur; 22 struct team_port *last = NULL; 23 struct sk_buff *skb2; 24 bool ret; 25 bool sum_ret = false; 26 27 list_for_each_entry_rcu(cur, &team->port_list, list) { 28 if (team_port_txable(cur)) { 29 if (last) { 30 skb2 = skb_clone(skb, GFP_ATOMIC); 31 if (skb2) { 32 ret = !team_dev_queue_xmit(team, last, 33 skb2); 34 if (!sum_ret) 35 sum_ret = ret; 36 } 37 } 38 last = cur; 39 } 40 } 41 if (last) { 42 ret = !team_dev_queue_xmit(team, last, skb); 43 if (!sum_ret) 44 sum_ret = ret; 45 } 46 return sum_ret; 47 } 48 49 static const struct team_mode_ops bc_mode_ops = { 50 .transmit = bc_transmit, 51 .port_enter = team_modeop_port_enter, 52 .port_change_dev_addr = team_modeop_port_change_dev_addr, 53 }; 54 55 static const struct team_mode bc_mode = { 56 .kind = "broadcast", 57 .owner = THIS_MODULE, 58 .ops = &bc_mode_ops, 59 }; 60 61 static int __init bc_init_module(void) 62 { 63 return team_mode_register(&bc_mode); 64 } 65 66 static void __exit bc_cleanup_module(void) 67 { 68 team_mode_unregister(&bc_mode); 69 } 70 71 module_init(bc_init_module); 72 module_exit(bc_cleanup_module); 73 74 MODULE_LICENSE("GPL v2"); 75 MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>"); 76 MODULE_DESCRIPTION("Broadcast mode for team"); 77 MODULE_ALIAS("team-mode-broadcast"); 78