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 <[email protected]>
   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 <[email protected]>");
  73 MODULE_DESCRIPTION("Broadcast mode for team");
  74 MODULE_ALIAS_TEAM_MODE("broadcast");