linux/drivers/net/team/team_mode_random.c
Jason A. Donenfeld 8032bf1233 treewide: use get_random_u32_below() instead of deprecated function
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>
2022-11-18 02:15:15 +01:00

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");