/*
* Copyright (C) 2017 Netronome Systems, Inc.
*
* This software is dual licensed under the GNU General License Version 2,
* June 1991 as shown in the file COPYING in the top-level directory of this
* source tree or the BSD 2-Clause License provided below. You have the
* option to license this software under the complete terms of either license.
*
* The BSD 2-Clause License:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/etherdevice.h>
#include <linux/lockdep.h>
#include <net/dst_metadata.h>
#include "nfpcore/nfp_cpp.h"
#include "nfp_app.h"
#include "nfp_main.h"
#include "nfp_net_repr.h"
#include "nfp_port.h"
static void nfp_repr_clean(struct nfp_repr *repr)
{
unregister_netdev(repr->netdev);
dst_release((struct dst_entry *)repr->dst);
nfp_port_free(repr->port);
}
static struct lock_class_key nfp_repr_netdev_xmit_lock_key;
static struct lock_class_key nfp_repr_netdev_addr_lock_key;
static void nfp_repr_set_lockdep_class_one(struct net_device *dev,
struct netdev_queue *txq,
void *_unused)
{
lockdep_set_class(&txq->_xmit_lock, &nfp_repr_netdev_xmit_lock_key);
}
static void nfp_repr_set_lockdep_class(struct net_device *dev)
{
lockdep_set_class(&dev->addr_list_lock, &nfp_repr_netdev_addr_lock_key);
netdev_for_each_tx_queue(dev, nfp_repr_set_lockdep_class_one, NULL);
}
int nfp_repr_init(struct nfp_app *app, struct net_device *netdev,
const struct net_device_ops *netdev_ops, u32 cmsg_port_id,
struct nfp_port *port, struct net_device *pf_netdev)
{
struct nfp_repr *repr = netdev_priv(netdev);
int err;
nfp_repr_set_lockdep_class(netdev);
repr->port = port;
repr->dst = metadata_dst_alloc(0, METADATA_HW_PORT_MUX, GFP_KERNEL);
if (!repr->dst)
return -ENOMEM;
repr->dst->u.port_info.port_id = cmsg_port_id;
repr->dst->u.port_info.lower_dev = pf_netdev;
netdev->netdev_ops = netdev_ops;
err = register_netdev(netdev);
if (err)
goto err_clean;
return 0;
err_clean:
dst_release((struct dst_entry *)repr->dst);
return err;
}
struct net_device *nfp_repr_alloc(struct nfp_app *app)
{
struct net_device *netdev;
struct nfp_repr *repr;
netdev = alloc_etherdev(sizeof(*repr));
if (!netdev)
return NULL;
repr = netdev_priv(netdev);
repr->netdev = netdev;
repr->app = app;
return netdev;
}
static void nfp_repr_clean_and_free(struct nfp_repr *repr)
{
nfp_info(repr->app->cpp, "Destroying Representor(%s)\n",
repr->netdev->name);
nfp_repr_clean(repr);
free_netdev(repr->netdev);
}
void nfp_reprs_clean_and_free(struct nfp_reprs *reprs)
{
unsigned int i;
for (i = 0; i < reprs->num_reprs; i++)
if (reprs->reprs[i])
nfp_repr_clean_and_free(netdev_priv(reprs->reprs[i]));
kfree(reprs);
}
void
nfp_reprs_clean_and_free_by_type(struct nfp_app *app,
enum nfp_repr_type type)
{
struct nfp_reprs *reprs;
reprs = nfp_app_reprs_set(app, type, NULL);
if (!reprs)
return;
synchronize_rcu();
nfp_reprs_clean_and_free(reprs);
}
struct nfp_reprs *nfp_reprs_alloc(unsigned int num_reprs)
{
struct nfp_reprs *reprs;
reprs = kzalloc(sizeof(*reprs) +
num_reprs * sizeof(struct net_device *), GFP_KERNEL);
if (!reprs)
return NULL;
reprs->num_reprs = num_reprs;
return reprs;
}
