cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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team_mode_broadcast.c (1672B)

      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
     15static 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
     45static 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
     51static 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
     58static int __init bc_init_module(void)
     59{
     60	return team_mode_register(&bc_mode);
     61}
     62
     63static void __exit bc_cleanup_module(void)
     64{
     65	team_mode_unregister(&bc_mode);
     66}
     67
     68module_init(bc_init_module);
     69module_exit(bc_cleanup_module);
     70
     71MODULE_LICENSE("GPL v2");
     72MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
     73MODULE_DESCRIPTION("Broadcast mode for team");
     74MODULE_ALIAS_TEAM_MODE("broadcast");