mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-22 13:02:19 +07:00
0402788a6c
Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
108 lines
2.4 KiB
C
108 lines
2.4 KiB
C
/*
|
|
* net/drivers/team/team_mode_roundrobin.c - Round-robin mode for team
|
|
* Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/if_team.h>
|
|
|
|
struct rr_priv {
|
|
unsigned int sent_packets;
|
|
};
|
|
|
|
static struct rr_priv *rr_priv(struct team *team)
|
|
{
|
|
return (struct rr_priv *) &team->mode_priv;
|
|
}
|
|
|
|
static struct team_port *__get_first_port_up(struct team *team,
|
|
struct team_port *port)
|
|
{
|
|
struct team_port *cur;
|
|
|
|
if (port->linkup)
|
|
return port;
|
|
cur = port;
|
|
list_for_each_entry_continue_rcu(cur, &team->port_list, list)
|
|
if (cur->linkup)
|
|
return cur;
|
|
list_for_each_entry_rcu(cur, &team->port_list, list) {
|
|
if (cur == port)
|
|
break;
|
|
if (cur->linkup)
|
|
return cur;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static bool rr_transmit(struct team *team, struct sk_buff *skb)
|
|
{
|
|
struct team_port *port;
|
|
int port_index;
|
|
|
|
port_index = rr_priv(team)->sent_packets++ % team->en_port_count;
|
|
port = team_get_port_by_index_rcu(team, port_index);
|
|
port = __get_first_port_up(team, port);
|
|
if (unlikely(!port))
|
|
goto drop;
|
|
skb->dev = port->dev;
|
|
if (dev_queue_xmit(skb))
|
|
return false;
|
|
return true;
|
|
|
|
drop:
|
|
dev_kfree_skb_any(skb);
|
|
return false;
|
|
}
|
|
|
|
static int rr_port_enter(struct team *team, struct team_port *port)
|
|
{
|
|
return team_port_set_team_mac(port);
|
|
}
|
|
|
|
static void rr_port_change_mac(struct team *team, struct team_port *port)
|
|
{
|
|
team_port_set_team_mac(port);
|
|
}
|
|
|
|
static const struct team_mode_ops rr_mode_ops = {
|
|
.transmit = rr_transmit,
|
|
.port_enter = rr_port_enter,
|
|
.port_change_mac = rr_port_change_mac,
|
|
};
|
|
|
|
static const struct team_mode rr_mode = {
|
|
.kind = "roundrobin",
|
|
.owner = THIS_MODULE,
|
|
.priv_size = sizeof(struct rr_priv),
|
|
.ops = &rr_mode_ops,
|
|
};
|
|
|
|
static int __init rr_init_module(void)
|
|
{
|
|
return team_mode_register(&rr_mode);
|
|
}
|
|
|
|
static void __exit rr_cleanup_module(void)
|
|
{
|
|
team_mode_unregister(&rr_mode);
|
|
}
|
|
|
|
module_init(rr_init_module);
|
|
module_exit(rr_cleanup_module);
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
|
|
MODULE_DESCRIPTION("Round-robin mode for team");
|
|
MODULE_ALIAS("team-mode-roundrobin");
|