261 lines
6.3 KiB
C
261 lines
6.3 KiB
C
/*
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* Copyright (C) 2017 Netronome Systems, Inc.
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*
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* This software is dual licensed under the GNU General License Version 2,
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* June 1991 as shown in the file COPYING in the top-level directory of this
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* source tree or the BSD 2-Clause License provided below. You have the
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* option to license this software under the complete terms of either license.
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*
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* The BSD 2-Clause License:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* 1. Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/lockdep.h>
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#include <net/switchdev.h>
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#include "nfpcore/nfp_cpp.h"
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#include "nfpcore/nfp_nsp.h"
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#include "nfp_app.h"
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#include "nfp_main.h"
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#include "nfp_net.h"
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#include "nfp_port.h"
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struct nfp_port *nfp_port_from_netdev(struct net_device *netdev)
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{
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if (nfp_netdev_is_nfp_net(netdev)) {
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struct nfp_net *nn = netdev_priv(netdev);
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return nn->port;
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}
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if (nfp_netdev_is_nfp_repr(netdev)) {
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struct nfp_repr *repr = netdev_priv(netdev);
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return repr->port;
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}
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WARN(1, "Unknown netdev type for nfp_port\n");
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return NULL;
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}
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static int
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nfp_port_attr_get(struct net_device *netdev, struct switchdev_attr *attr)
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{
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struct nfp_port *port;
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port = nfp_port_from_netdev(netdev);
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if (!port)
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return -EOPNOTSUPP;
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switch (attr->id) {
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case SWITCHDEV_ATTR_ID_PORT_PARENT_ID: {
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const u8 *serial;
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/* N.B: attr->u.ppid.id is binary data */
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attr->u.ppid.id_len = nfp_cpp_serial(port->app->cpp, &serial);
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memcpy(&attr->u.ppid.id, serial, attr->u.ppid.id_len);
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break;
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}
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default:
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return -EOPNOTSUPP;
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}
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return 0;
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}
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const struct switchdev_ops nfp_port_switchdev_ops = {
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.switchdev_port_attr_get = nfp_port_attr_get,
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};
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int nfp_port_setup_tc(struct net_device *netdev, enum tc_setup_type type,
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void *type_data)
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{
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struct nfp_port *port;
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port = nfp_port_from_netdev(netdev);
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if (!port)
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return -EOPNOTSUPP;
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return nfp_app_setup_tc(port->app, netdev, type, type_data);
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}
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struct nfp_port *
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nfp_port_from_id(struct nfp_pf *pf, enum nfp_port_type type, unsigned int id)
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{
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struct nfp_port *port;
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lockdep_assert_held(&pf->lock);
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if (type != NFP_PORT_PHYS_PORT)
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return NULL;
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list_for_each_entry(port, &pf->ports, port_list)
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if (port->eth_id == id)
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return port;
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return NULL;
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}
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struct nfp_eth_table_port *__nfp_port_get_eth_port(struct nfp_port *port)
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{
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if (!port)
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return NULL;
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if (port->type != NFP_PORT_PHYS_PORT)
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return NULL;
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return port->eth_port;
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}
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struct nfp_eth_table_port *nfp_port_get_eth_port(struct nfp_port *port)
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{
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if (!__nfp_port_get_eth_port(port))
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return NULL;
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if (test_bit(NFP_PORT_CHANGED, &port->flags))
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if (nfp_net_refresh_eth_port(port))
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return NULL;
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return __nfp_port_get_eth_port(port);
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}
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int
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nfp_port_get_phys_port_name(struct net_device *netdev, char *name, size_t len)
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{
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struct nfp_eth_table_port *eth_port;
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struct nfp_port *port;
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int n;
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port = nfp_port_from_netdev(netdev);
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if (!port)
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return -EOPNOTSUPP;
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switch (port->type) {
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case NFP_PORT_PHYS_PORT:
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eth_port = __nfp_port_get_eth_port(port);
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if (!eth_port)
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return -EOPNOTSUPP;
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if (!eth_port->is_split)
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n = snprintf(name, len, "p%d", eth_port->label_port);
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else
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n = snprintf(name, len, "p%ds%d", eth_port->label_port,
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eth_port->label_subport);
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break;
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case NFP_PORT_PF_PORT:
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n = snprintf(name, len, "pf%d", port->pf_id);
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break;
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case NFP_PORT_VF_PORT:
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n = snprintf(name, len, "pf%dvf%d", port->pf_id, port->vf_id);
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break;
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default:
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return -EOPNOTSUPP;
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}
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if (n >= len)
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return -EINVAL;
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return 0;
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}
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/**
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* nfp_port_configure() - helper to set the interface configured bit
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* @netdev: net_device instance
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* @configed: Desired state
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*
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* Helper to set the ifup/ifdown state on the PHY only if there is a physical
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* interface associated with the netdev.
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*
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* Return:
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* 0 - configuration successful (or no change);
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* -ERRNO - configuration failed.
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*/
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int nfp_port_configure(struct net_device *netdev, bool configed)
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{
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struct nfp_eth_table_port *eth_port;
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struct nfp_port *port;
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int err;
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port = nfp_port_from_netdev(netdev);
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eth_port = __nfp_port_get_eth_port(port);
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if (!eth_port)
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return 0;
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err = nfp_eth_set_configured(port->app->cpp, eth_port->index, configed);
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return err < 0 && err != -EOPNOTSUPP ? err : 0;
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}
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int nfp_port_init_phy_port(struct nfp_pf *pf, struct nfp_app *app,
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struct nfp_port *port, unsigned int id)
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{
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/* Check if vNIC has external port associated and cfg is OK */
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if (!pf->eth_tbl || id >= pf->eth_tbl->count) {
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nfp_err(app->cpp,
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"NSP port entries don't match vNICs (no entry %d)\n",
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id);
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return -EINVAL;
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}
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if (pf->eth_tbl->ports[id].override_changed) {
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nfp_warn(app->cpp,
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"Config changed for port #%d, reboot required before port will be operational\n",
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pf->eth_tbl->ports[id].index);
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port->type = NFP_PORT_INVALID;
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return 0;
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}
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port->eth_port = &pf->eth_tbl->ports[id];
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port->eth_id = pf->eth_tbl->ports[id].index;
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if (pf->mac_stats_mem)
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port->eth_stats =
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pf->mac_stats_mem + port->eth_id * NFP_MAC_STATS_SIZE;
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return 0;
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}
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struct nfp_port *
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nfp_port_alloc(struct nfp_app *app, enum nfp_port_type type,
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struct net_device *netdev)
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{
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struct nfp_port *port;
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port = kzalloc(sizeof(*port), GFP_KERNEL);
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if (!port)
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return ERR_PTR(-ENOMEM);
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port->netdev = netdev;
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port->type = type;
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port->app = app;
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list_add_tail(&port->port_list, &app->pf->ports);
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return port;
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}
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void nfp_port_free(struct nfp_port *port)
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{
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if (!port)
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return;
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list_del(&port->port_list);
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kfree(port);
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}
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