drivers/net/team/team_mode_broadcast.c

   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");