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/*
* 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/lockdep.h>
#include <net/switchdev.h>
#include "nfpcore/nfp_cpp.h"
#include "nfpcore/nfp_nsp.h"
#include "nfp_app.h"
#include "nfp_main.h"
#include "nfp_net.h"
#include "nfp_port.h"
struct nfp_port *nfp_port_from_netdev(struct net_device *netdev)
{
if (nfp_netdev_is_nfp_net(netdev)) {
struct nfp_net *nn = netdev_priv(netdev);
return nn->port;
}
if (nfp_netdev_is_nfp_repr(netdev)) {
struct nfp_repr *repr = netdev_priv(netdev);
return repr->port;
}
WARN(1, "Unknown netdev type for nfp_port\n");
return NULL;
}
static int
nfp_port_attr_get(struct net_device *netdev, struct switchdev_attr *attr)
{
struct nfp_port *port;
port = nfp_port_from_netdev(netdev);
if (!port)
return -EOPNOTSUPP;
switch (attr->id) {
case SWITCHDEV_ATTR_ID_PORT_PARENT_ID: {
const u8 *serial;
/* N.B: attr->u.ppid.id is binary data */
attr->u.ppid.id_len = nfp_cpp_serial(port->app->cpp, &serial);
memcpy(&attr->u.ppid.id, serial, attr->u.ppid.id_len);
break;
}
default:
return -EOPNOTSUPP;
}
return 0;
}
const struct switchdev_ops nfp_port_switchdev_ops = {
.switchdev_port_attr_get = nfp_port_attr_get,
};
int nfp_port_setup_tc(struct net_device *netdev, u32 handle, u32 chain_index,
__be16 proto, struct tc_to_netdev *tc)
{
struct nfp_port *port;
if (chain_index)
return -EOPNOTSUPP;
port = nfp_port_from_netdev(netdev);
if (!port)
return -EOPNOTSUPP;
return nfp_app_setup_tc(port->app, netdev, handle, proto, tc);
}
struct nfp_port *
nfp_port_from_id(struct nfp_pf *pf, enum nfp_port_type type, unsigned int id)
{
struct nfp_port *port;
lockdep_assert_held(&pf->lock);
if (type != NFP_PORT_PHYS_PORT)
return NULL;
list_for_each_entry(port, &pf->ports, port_list)
if (port->eth_id == id)
return port;
return NULL;
}
struct nfp_eth_table_port *__nfp_port_get_eth_port(struct nfp_port *port)
{
if (!port)
return NULL;
if (port->type != NFP_PORT_PHYS_PORT)
return NULL;
return port->eth_port;
}
struct nfp_eth_table_port *nfp_port_get_eth_port(struct nfp_port *port)
{
if (!__nfp_port_get_eth_port(port))
return NULL;
if (test_bit(NFP_PORT_CHANGED, &port->flags))
if (nfp_net_refresh_eth_port(port))
return NULL;
return __nfp_port_get_eth_port(port);
}
int
nfp_port_get_phys_port_name(struct net_device *netdev, char *name, size_t len)
{
struct nfp_eth_table_port *eth_port;
struct nfp_port *port;
int n;
port = nfp_port_from_netdev(netdev);
if (!port)
return -EOPNOTSUPP;
switch (port->type) {
case NFP_PORT_PHYS_PORT:
eth_port = __nfp_port_get_eth_port(port);
if (!eth_port)
return -EOPNOTSUPP;
if (!eth_port->is_split)
n = snprintf(name, len, "p%d", eth_port->label_port);
else
n = snprintf(name, len, "p%ds%d", eth_port->label_port,
eth_port->label_subport);
break;
case NFP_PORT_PF_PORT:
n = snprintf(name, len, "pf%d", port->pf_id);
break;
case NFP_PORT_VF_PORT:
n = snprintf(name, len, "pf%dvf%d", port->pf_id, port->vf_id);
break;
default:
return -EOPNOTSUPP;
}
if (n >= len)
return -EINVAL;
return 0;
}
int nfp_port_init_phy_port(struct nfp_pf *pf, struct nfp_app *app,
struct nfp_port *port, unsigned int id)
{
/* Check if vNIC has external port associated and cfg is OK */
if (!pf->eth_tbl || id >= pf->eth_tbl->count) {
nfp_err(app->cpp,
"NSP port entries don't match vNICs (no entry %d)\n",
id);
return -EINVAL;
}
if (pf->eth_tbl->ports[id].override_changed) {
nfp_warn(app->cpp,
"Config changed for port #%d, reboot required before port will be operational\n",
pf->eth_tbl->ports[id].index);
port->type = NFP_PORT_INVALID;
return 0;
}
port->eth_port = &pf->eth_tbl->ports[id];
port->eth_id = pf->eth_tbl->ports[id].index;
return 0;
}
struct nfp_port *
nfp_port_alloc(struct nfp_app *app, enum nfp_port_type type,
struct net_device *netdev)
{
struct nfp_port *port;
port = kzalloc(sizeof(*port), GFP_KERNEL);
if (!port)
return ERR_PTR(-ENOMEM);
port->netdev = netdev;
port->type = type;
port->app = app;
list_add_tail(&port->port_list, &app->pf->ports);
return port;
}
void nfp_port_free(struct nfp_port *port)
{
if (!port)
return;
list_del(&port->port_list);
kfree(port);
}
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