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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2017-2018 Netronome Systems, Inc. */
#include <linux/lockdep.h>
#include <linux/netdevice.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;
}
int nfp_port_get_port_parent_id(struct net_device *netdev,
struct netdev_phys_item_id *ppid)
{
struct nfp_port *port;
const u8 *serial;
port = nfp_port_from_netdev(netdev);
if (!port)
return -EOPNOTSUPP;
ppid->id_len = nfp_cpp_serial(port->app->cpp, &serial);
memcpy(&ppid->id, serial, ppid->id_len);
return 0;
}
int nfp_port_setup_tc(struct net_device *netdev, enum tc_setup_type type,
void *type_data)
{
struct nfp_port *port;
port = nfp_port_from_netdev(netdev);
if (!port)
return -EOPNOTSUPP;
return nfp_app_setup_tc(port->app, netdev, type, type_data);
}
int nfp_port_set_features(struct net_device *netdev, netdev_features_t features)
{
struct nfp_port *port;
port = nfp_port_from_netdev(netdev);
if (!port)
return 0;
if ((netdev->features & NETIF_F_HW_TC) > (features & NETIF_F_HW_TC) &&
port->tc_offload_cnt) {
netdev_err(netdev, "Cannot disable HW TC offload while offloads active\n");
return -EBUSY;
}
return 0;
}
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:
if (!port->pf_split)
n = snprintf(name, len, "pf%d", port->pf_id);
else
n = snprintf(name, len, "pf%ds%d", port->pf_id,
port->pf_split_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;
}
/**
* nfp_port_configure() - helper to set the interface configured bit
* @netdev: net_device instance
* @configed: Desired state
*
* Helper to set the ifup/ifdown state on the PHY only if there is a physical
* interface associated with the netdev.
*
* Return:
* 0 - configuration successful (or no change);
* -ERRNO - configuration failed.
*/
int nfp_port_configure(struct net_device *netdev, bool configed)
{
struct nfp_eth_table_port *eth_port;
struct nfp_port *port;
int err;
port = nfp_port_from_netdev(netdev);
eth_port = __nfp_port_get_eth_port(port);
if (!eth_port)
return 0;
if (port->eth_forced)
return 0;
err = nfp_eth_set_configured(port->app->cpp, eth_port->index, configed);
return err < 0 && err != -EOPNOTSUPP ? err : 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;
if (pf->mac_stats_mem)
port->eth_stats =
pf->mac_stats_mem + port->eth_id * NFP_MAC_STATS_SIZE;
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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