mirror of
https://github.com/torvalds/linux.git
synced 2024-12-11 05:33:09 +00:00
8032bf1233
This is a simple mechanical transformation done by: @@ expression E; @@ - prandom_u32_max + get_random_u32_below (E) Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Darrick J. Wong <djwong@kernel.org> # for xfs Reviewed-by: SeongJae Park <sj@kernel.org> # for damon Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> # for infiniband Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> # for arm Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # for mmc Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* drivers/net/team/team_mode_random.c - Random mode for team
|
|
* Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/if_team.h>
|
|
|
|
static bool rnd_transmit(struct team *team, struct sk_buff *skb)
|
|
{
|
|
struct team_port *port;
|
|
int port_index;
|
|
|
|
port_index = get_random_u32_below(team->en_port_count);
|
|
port = team_get_port_by_index_rcu(team, port_index);
|
|
if (unlikely(!port))
|
|
goto drop;
|
|
port = team_get_first_port_txable_rcu(team, port);
|
|
if (unlikely(!port))
|
|
goto drop;
|
|
if (team_dev_queue_xmit(team, port, skb))
|
|
return false;
|
|
return true;
|
|
|
|
drop:
|
|
dev_kfree_skb_any(skb);
|
|
return false;
|
|
}
|
|
|
|
static const struct team_mode_ops rnd_mode_ops = {
|
|
.transmit = rnd_transmit,
|
|
.port_enter = team_modeop_port_enter,
|
|
.port_change_dev_addr = team_modeop_port_change_dev_addr,
|
|
};
|
|
|
|
static const struct team_mode rnd_mode = {
|
|
.kind = "random",
|
|
.owner = THIS_MODULE,
|
|
.ops = &rnd_mode_ops,
|
|
.lag_tx_type = NETDEV_LAG_TX_TYPE_RANDOM,
|
|
};
|
|
|
|
static int __init rnd_init_module(void)
|
|
{
|
|
return team_mode_register(&rnd_mode);
|
|
}
|
|
|
|
static void __exit rnd_cleanup_module(void)
|
|
{
|
|
team_mode_unregister(&rnd_mode);
|
|
}
|
|
|
|
module_init(rnd_init_module);
|
|
module_exit(rnd_cleanup_module);
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
|
|
MODULE_DESCRIPTION("Random mode for team");
|
|
MODULE_ALIAS_TEAM_MODE("random");
|