641 lines
19 KiB
C
641 lines
19 KiB
C
/*
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* Copyright (C) 2015 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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/*
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* nfp_net_ethtool.c
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* Netronome network device driver: ethtool support
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* Authors: Jakub Kicinski <jakub.kicinski@netronome.com>
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* Jason McMullan <jason.mcmullan@netronome.com>
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* Rolf Neugebauer <rolf.neugebauer@netronome.com>
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* Brad Petrus <brad.petrus@netronome.com>
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*/
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#include <linux/version.h>
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#include <linux/kernel.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
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#include <linux/ethtool.h>
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#include "nfp_net_ctrl.h"
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#include "nfp_net.h"
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/* Support for stats. Returns netdev, driver, and device stats */
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enum { NETDEV_ET_STATS, NFP_NET_DRV_ET_STATS, NFP_NET_DEV_ET_STATS };
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struct _nfp_net_et_stats {
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char name[ETH_GSTRING_LEN];
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int type;
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int sz;
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int off;
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};
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#define NN_ET_NETDEV_STAT(m) NETDEV_ET_STATS, \
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FIELD_SIZEOF(struct net_device_stats, m), \
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offsetof(struct net_device_stats, m)
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/* For stats in the control BAR (other than Q stats) */
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#define NN_ET_DEV_STAT(m) NFP_NET_DEV_ET_STATS, \
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sizeof(u64), \
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(m)
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static const struct _nfp_net_et_stats nfp_net_et_stats[] = {
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/* netdev stats */
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{"rx_packets", NN_ET_NETDEV_STAT(rx_packets)},
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{"tx_packets", NN_ET_NETDEV_STAT(tx_packets)},
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{"rx_bytes", NN_ET_NETDEV_STAT(rx_bytes)},
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{"tx_bytes", NN_ET_NETDEV_STAT(tx_bytes)},
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{"rx_errors", NN_ET_NETDEV_STAT(rx_errors)},
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{"tx_errors", NN_ET_NETDEV_STAT(tx_errors)},
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{"rx_dropped", NN_ET_NETDEV_STAT(rx_dropped)},
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{"tx_dropped", NN_ET_NETDEV_STAT(tx_dropped)},
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{"multicast", NN_ET_NETDEV_STAT(multicast)},
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{"collisions", NN_ET_NETDEV_STAT(collisions)},
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{"rx_over_errors", NN_ET_NETDEV_STAT(rx_over_errors)},
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{"rx_crc_errors", NN_ET_NETDEV_STAT(rx_crc_errors)},
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{"rx_frame_errors", NN_ET_NETDEV_STAT(rx_frame_errors)},
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{"rx_fifo_errors", NN_ET_NETDEV_STAT(rx_fifo_errors)},
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{"rx_missed_errors", NN_ET_NETDEV_STAT(rx_missed_errors)},
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{"tx_aborted_errors", NN_ET_NETDEV_STAT(tx_aborted_errors)},
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{"tx_carrier_errors", NN_ET_NETDEV_STAT(tx_carrier_errors)},
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{"tx_fifo_errors", NN_ET_NETDEV_STAT(tx_fifo_errors)},
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/* Stats from the device */
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{"dev_rx_discards", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_DISCARDS)},
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{"dev_rx_errors", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_ERRORS)},
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{"dev_rx_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_OCTETS)},
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{"dev_rx_uc_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_UC_OCTETS)},
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{"dev_rx_mc_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_MC_OCTETS)},
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{"dev_rx_bc_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_BC_OCTETS)},
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{"dev_rx_pkts", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_FRAMES)},
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{"dev_rx_mc_pkts", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_MC_FRAMES)},
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{"dev_rx_bc_pkts", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_RX_BC_FRAMES)},
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{"dev_tx_discards", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_DISCARDS)},
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{"dev_tx_errors", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_ERRORS)},
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{"dev_tx_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_OCTETS)},
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{"dev_tx_uc_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_UC_OCTETS)},
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{"dev_tx_mc_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_MC_OCTETS)},
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{"dev_tx_bc_bytes", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_BC_OCTETS)},
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{"dev_tx_pkts", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_FRAMES)},
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{"dev_tx_mc_pkts", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_MC_FRAMES)},
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{"dev_tx_bc_pkts", NN_ET_DEV_STAT(NFP_NET_CFG_STATS_TX_BC_FRAMES)},
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};
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#define NN_ET_GLOBAL_STATS_LEN ARRAY_SIZE(nfp_net_et_stats)
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#define NN_ET_RVEC_STATS_LEN (nn->num_r_vecs * 3)
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#define NN_ET_RVEC_GATHER_STATS 7
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#define NN_ET_QUEUE_STATS_LEN ((nn->num_tx_rings + nn->num_rx_rings) * 2)
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#define NN_ET_STATS_LEN (NN_ET_GLOBAL_STATS_LEN + NN_ET_RVEC_GATHER_STATS + \
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NN_ET_RVEC_STATS_LEN + NN_ET_QUEUE_STATS_LEN)
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static void nfp_net_get_drvinfo(struct net_device *netdev,
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struct ethtool_drvinfo *drvinfo)
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{
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struct nfp_net *nn = netdev_priv(netdev);
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strlcpy(drvinfo->driver, nfp_net_driver_name, sizeof(drvinfo->driver));
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strlcpy(drvinfo->version, nfp_net_driver_version,
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sizeof(drvinfo->version));
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snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
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"%d.%d.%d.%d",
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nn->fw_ver.resv, nn->fw_ver.class,
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nn->fw_ver.major, nn->fw_ver.minor);
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strlcpy(drvinfo->bus_info, pci_name(nn->pdev),
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sizeof(drvinfo->bus_info));
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drvinfo->n_stats = NN_ET_STATS_LEN;
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drvinfo->regdump_len = NFP_NET_CFG_BAR_SZ;
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}
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static void nfp_net_get_ringparam(struct net_device *netdev,
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struct ethtool_ringparam *ring)
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{
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struct nfp_net *nn = netdev_priv(netdev);
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ring->rx_max_pending = NFP_NET_MAX_RX_DESCS;
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ring->tx_max_pending = NFP_NET_MAX_TX_DESCS;
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ring->rx_pending = nn->rxd_cnt;
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ring->tx_pending = nn->txd_cnt;
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}
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static int nfp_net_set_ringparam(struct net_device *netdev,
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struct ethtool_ringparam *ring)
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{
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struct nfp_net *nn = netdev_priv(netdev);
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u32 rxd_cnt, txd_cnt;
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if (netif_running(netdev)) {
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/* Some NIC drivers allow reconfiguration on the fly,
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* some down the interface, change and then up it
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* again. For now we don't allow changes when the
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* device is up.
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*/
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nn_warn(nn, "Can't change rings while device is up\n");
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return -EBUSY;
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}
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/* We don't have separate queues/rings for small/large frames. */
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if (ring->rx_mini_pending || ring->rx_jumbo_pending)
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return -EINVAL;
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/* Round up to supported values */
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rxd_cnt = roundup_pow_of_two(ring->rx_pending);
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rxd_cnt = max_t(u32, rxd_cnt, NFP_NET_MIN_RX_DESCS);
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rxd_cnt = min_t(u32, rxd_cnt, NFP_NET_MAX_RX_DESCS);
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txd_cnt = roundup_pow_of_two(ring->tx_pending);
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txd_cnt = max_t(u32, txd_cnt, NFP_NET_MIN_TX_DESCS);
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txd_cnt = min_t(u32, txd_cnt, NFP_NET_MAX_TX_DESCS);
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if (nn->rxd_cnt != rxd_cnt || nn->txd_cnt != txd_cnt)
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nn_dbg(nn, "Change ring size: RxQ %u->%u, TxQ %u->%u\n",
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nn->rxd_cnt, rxd_cnt, nn->txd_cnt, txd_cnt);
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nn->rxd_cnt = rxd_cnt;
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nn->txd_cnt = txd_cnt;
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return 0;
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}
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static void nfp_net_get_strings(struct net_device *netdev,
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u32 stringset, u8 *data)
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{
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struct nfp_net *nn = netdev_priv(netdev);
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u8 *p = data;
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int i;
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switch (stringset) {
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case ETH_SS_STATS:
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for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++) {
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memcpy(p, nfp_net_et_stats[i].name, ETH_GSTRING_LEN);
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p += ETH_GSTRING_LEN;
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}
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for (i = 0; i < nn->num_r_vecs; i++) {
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sprintf(p, "rvec_%u_rx_pkts", i);
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p += ETH_GSTRING_LEN;
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sprintf(p, "rvec_%u_tx_pkts", i);
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p += ETH_GSTRING_LEN;
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sprintf(p, "rvec_%u_tx_busy", i);
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p += ETH_GSTRING_LEN;
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}
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strncpy(p, "hw_rx_csum_ok", ETH_GSTRING_LEN);
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p += ETH_GSTRING_LEN;
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strncpy(p, "hw_rx_csum_inner_ok", ETH_GSTRING_LEN);
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p += ETH_GSTRING_LEN;
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strncpy(p, "hw_rx_csum_err", ETH_GSTRING_LEN);
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p += ETH_GSTRING_LEN;
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strncpy(p, "hw_tx_csum", ETH_GSTRING_LEN);
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p += ETH_GSTRING_LEN;
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strncpy(p, "hw_tx_inner_csum", ETH_GSTRING_LEN);
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p += ETH_GSTRING_LEN;
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strncpy(p, "tx_gather", ETH_GSTRING_LEN);
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p += ETH_GSTRING_LEN;
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strncpy(p, "tx_lso", ETH_GSTRING_LEN);
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p += ETH_GSTRING_LEN;
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for (i = 0; i < nn->num_tx_rings; i++) {
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sprintf(p, "txq_%u_pkts", i);
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p += ETH_GSTRING_LEN;
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sprintf(p, "txq_%u_bytes", i);
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p += ETH_GSTRING_LEN;
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}
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for (i = 0; i < nn->num_rx_rings; i++) {
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sprintf(p, "rxq_%u_pkts", i);
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p += ETH_GSTRING_LEN;
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sprintf(p, "rxq_%u_bytes", i);
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p += ETH_GSTRING_LEN;
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}
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break;
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}
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}
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static void nfp_net_get_stats(struct net_device *netdev,
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struct ethtool_stats *stats, u64 *data)
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{
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u64 gathered_stats[NN_ET_RVEC_GATHER_STATS] = {};
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struct nfp_net *nn = netdev_priv(netdev);
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struct rtnl_link_stats64 *netdev_stats;
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struct rtnl_link_stats64 temp = {};
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u64 tmp[NN_ET_RVEC_GATHER_STATS];
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u8 __iomem *io_p;
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int i, j, k;
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u8 *p;
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netdev_stats = dev_get_stats(netdev, &temp);
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for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++) {
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switch (nfp_net_et_stats[i].type) {
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case NETDEV_ET_STATS:
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p = (char *)netdev_stats + nfp_net_et_stats[i].off;
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data[i] = nfp_net_et_stats[i].sz == sizeof(u64) ?
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*(u64 *)p : *(u32 *)p;
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break;
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case NFP_NET_DEV_ET_STATS:
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io_p = nn->ctrl_bar + nfp_net_et_stats[i].off;
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data[i] = readq(io_p);
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break;
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}
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}
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for (j = 0; j < nn->num_r_vecs; j++) {
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unsigned int start;
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do {
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start = u64_stats_fetch_begin(&nn->r_vecs[j].rx_sync);
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data[i++] = nn->r_vecs[j].rx_pkts;
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tmp[0] = nn->r_vecs[j].hw_csum_rx_ok;
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tmp[1] = nn->r_vecs[j].hw_csum_rx_inner_ok;
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tmp[2] = nn->r_vecs[j].hw_csum_rx_error;
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} while (u64_stats_fetch_retry(&nn->r_vecs[j].rx_sync, start));
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do {
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start = u64_stats_fetch_begin(&nn->r_vecs[j].tx_sync);
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data[i++] = nn->r_vecs[j].tx_pkts;
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data[i++] = nn->r_vecs[j].tx_busy;
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tmp[3] = nn->r_vecs[j].hw_csum_tx;
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tmp[4] = nn->r_vecs[j].hw_csum_tx_inner;
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tmp[5] = nn->r_vecs[j].tx_gather;
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tmp[6] = nn->r_vecs[j].tx_lso;
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} while (u64_stats_fetch_retry(&nn->r_vecs[j].tx_sync, start));
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for (k = 0; k < NN_ET_RVEC_GATHER_STATS; k++)
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gathered_stats[k] += tmp[k];
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}
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for (j = 0; j < NN_ET_RVEC_GATHER_STATS; j++)
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data[i++] = gathered_stats[j];
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for (j = 0; j < nn->num_tx_rings; j++) {
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io_p = nn->ctrl_bar + NFP_NET_CFG_TXR_STATS(j);
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data[i++] = readq(io_p);
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io_p = nn->ctrl_bar + NFP_NET_CFG_TXR_STATS(j) + 8;
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data[i++] = readq(io_p);
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}
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for (j = 0; j < nn->num_rx_rings; j++) {
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io_p = nn->ctrl_bar + NFP_NET_CFG_RXR_STATS(j);
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data[i++] = readq(io_p);
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io_p = nn->ctrl_bar + NFP_NET_CFG_RXR_STATS(j) + 8;
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data[i++] = readq(io_p);
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}
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}
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static int nfp_net_get_sset_count(struct net_device *netdev, int sset)
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{
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struct nfp_net *nn = netdev_priv(netdev);
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switch (sset) {
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case ETH_SS_STATS:
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return NN_ET_STATS_LEN;
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default:
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return -EOPNOTSUPP;
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}
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}
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/* RX network flow classification (RSS, filters, etc)
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*/
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static u32 ethtool_flow_to_nfp_flag(u32 flow_type)
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{
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static const u32 xlate_ethtool_to_nfp[IPV6_FLOW + 1] = {
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[TCP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_TCP,
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[TCP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_TCP,
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[UDP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_UDP,
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[UDP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_UDP,
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[IPV4_FLOW] = NFP_NET_CFG_RSS_IPV4,
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[IPV6_FLOW] = NFP_NET_CFG_RSS_IPV6,
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};
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if (flow_type >= ARRAY_SIZE(xlate_ethtool_to_nfp))
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return 0;
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return xlate_ethtool_to_nfp[flow_type];
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}
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static int nfp_net_get_rss_hash_opts(struct nfp_net *nn,
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struct ethtool_rxnfc *cmd)
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{
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u32 nfp_rss_flag;
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cmd->data = 0;
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if (!(nn->cap & NFP_NET_CFG_CTRL_RSS))
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return -EOPNOTSUPP;
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nfp_rss_flag = ethtool_flow_to_nfp_flag(cmd->flow_type);
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if (!nfp_rss_flag)
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return -EINVAL;
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cmd->data |= RXH_IP_SRC | RXH_IP_DST;
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if (nn->rss_cfg & nfp_rss_flag)
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cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
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return 0;
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}
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static int nfp_net_get_rxnfc(struct net_device *netdev,
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struct ethtool_rxnfc *cmd, u32 *rule_locs)
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{
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struct nfp_net *nn = netdev_priv(netdev);
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switch (cmd->cmd) {
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case ETHTOOL_GRXRINGS:
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cmd->data = nn->num_rx_rings;
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return 0;
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case ETHTOOL_GRXFH:
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return nfp_net_get_rss_hash_opts(nn, cmd);
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default:
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return -EOPNOTSUPP;
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}
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}
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static int nfp_net_set_rss_hash_opt(struct nfp_net *nn,
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struct ethtool_rxnfc *nfc)
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{
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u32 new_rss_cfg = nn->rss_cfg;
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u32 nfp_rss_flag;
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int err;
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if (!(nn->cap & NFP_NET_CFG_CTRL_RSS))
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return -EOPNOTSUPP;
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/* RSS only supports IP SA/DA and L4 src/dst ports */
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if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
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RXH_L4_B_0_1 | RXH_L4_B_2_3))
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return -EINVAL;
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/* We need at least the IP SA/DA fields for hashing */
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if (!(nfc->data & RXH_IP_SRC) ||
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!(nfc->data & RXH_IP_DST))
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return -EINVAL;
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nfp_rss_flag = ethtool_flow_to_nfp_flag(nfc->flow_type);
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if (!nfp_rss_flag)
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return -EINVAL;
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switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
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case 0:
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new_rss_cfg &= ~nfp_rss_flag;
|
|
break;
|
|
case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
|
|
new_rss_cfg |= nfp_rss_flag;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
new_rss_cfg |= NFP_NET_CFG_RSS_TOEPLITZ;
|
|
new_rss_cfg |= NFP_NET_CFG_RSS_MASK;
|
|
|
|
if (new_rss_cfg == nn->rss_cfg)
|
|
return 0;
|
|
|
|
writel(new_rss_cfg, nn->ctrl_bar + NFP_NET_CFG_RSS_CTRL);
|
|
err = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS);
|
|
if (err)
|
|
return err;
|
|
|
|
nn->rss_cfg = new_rss_cfg;
|
|
|
|
nn_dbg(nn, "Changed RSS config to 0x%x\n", nn->rss_cfg);
|
|
return 0;
|
|
}
|
|
|
|
static int nfp_net_set_rxnfc(struct net_device *netdev,
|
|
struct ethtool_rxnfc *cmd)
|
|
{
|
|
struct nfp_net *nn = netdev_priv(netdev);
|
|
|
|
switch (cmd->cmd) {
|
|
case ETHTOOL_SRXFH:
|
|
return nfp_net_set_rss_hash_opt(nn, cmd);
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
static u32 nfp_net_get_rxfh_indir_size(struct net_device *netdev)
|
|
{
|
|
struct nfp_net *nn = netdev_priv(netdev);
|
|
|
|
if (!(nn->cap & NFP_NET_CFG_CTRL_RSS))
|
|
return 0;
|
|
|
|
return ARRAY_SIZE(nn->rss_itbl);
|
|
}
|
|
|
|
static u32 nfp_net_get_rxfh_key_size(struct net_device *netdev)
|
|
{
|
|
return NFP_NET_CFG_RSS_KEY_SZ;
|
|
}
|
|
|
|
static int nfp_net_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
|
|
u8 *hfunc)
|
|
{
|
|
struct nfp_net *nn = netdev_priv(netdev);
|
|
int i;
|
|
|
|
if (!(nn->cap & NFP_NET_CFG_CTRL_RSS))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (indir)
|
|
for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++)
|
|
indir[i] = nn->rss_itbl[i];
|
|
if (key)
|
|
memcpy(key, nn->rss_key, NFP_NET_CFG_RSS_KEY_SZ);
|
|
if (hfunc)
|
|
*hfunc = ETH_RSS_HASH_TOP;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nfp_net_set_rxfh(struct net_device *netdev,
|
|
const u32 *indir, const u8 *key,
|
|
const u8 hfunc)
|
|
{
|
|
struct nfp_net *nn = netdev_priv(netdev);
|
|
int i;
|
|
|
|
if (!(nn->cap & NFP_NET_CFG_CTRL_RSS) ||
|
|
!(hfunc == ETH_RSS_HASH_NO_CHANGE || hfunc == ETH_RSS_HASH_TOP))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!key && !indir)
|
|
return 0;
|
|
|
|
if (key) {
|
|
memcpy(nn->rss_key, key, NFP_NET_CFG_RSS_KEY_SZ);
|
|
nfp_net_rss_write_key(nn);
|
|
}
|
|
if (indir) {
|
|
for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++)
|
|
nn->rss_itbl[i] = indir[i];
|
|
|
|
nfp_net_rss_write_itbl(nn);
|
|
}
|
|
|
|
return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS);
|
|
}
|
|
|
|
/* Dump BAR registers
|
|
*/
|
|
static int nfp_net_get_regs_len(struct net_device *netdev)
|
|
{
|
|
return NFP_NET_CFG_BAR_SZ;
|
|
}
|
|
|
|
static void nfp_net_get_regs(struct net_device *netdev,
|
|
struct ethtool_regs *regs, void *p)
|
|
{
|
|
struct nfp_net *nn = netdev_priv(netdev);
|
|
u32 *regs_buf = p;
|
|
int i;
|
|
|
|
regs->version = nn_readl(nn, NFP_NET_CFG_VERSION);
|
|
|
|
for (i = 0; i < NFP_NET_CFG_BAR_SZ / sizeof(u32); i++)
|
|
regs_buf[i] = readl(nn->ctrl_bar + (i * sizeof(u32)));
|
|
}
|
|
|
|
static int nfp_net_get_coalesce(struct net_device *netdev,
|
|
struct ethtool_coalesce *ec)
|
|
{
|
|
struct nfp_net *nn = netdev_priv(netdev);
|
|
|
|
if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD))
|
|
return -EINVAL;
|
|
|
|
ec->rx_coalesce_usecs = nn->rx_coalesce_usecs;
|
|
ec->rx_max_coalesced_frames = nn->rx_coalesce_max_frames;
|
|
ec->tx_coalesce_usecs = nn->tx_coalesce_usecs;
|
|
ec->tx_max_coalesced_frames = nn->tx_coalesce_max_frames;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nfp_net_set_coalesce(struct net_device *netdev,
|
|
struct ethtool_coalesce *ec)
|
|
{
|
|
struct nfp_net *nn = netdev_priv(netdev);
|
|
unsigned int factor;
|
|
|
|
if (ec->rx_coalesce_usecs_irq ||
|
|
ec->rx_max_coalesced_frames_irq ||
|
|
ec->tx_coalesce_usecs_irq ||
|
|
ec->tx_max_coalesced_frames_irq ||
|
|
ec->stats_block_coalesce_usecs ||
|
|
ec->use_adaptive_rx_coalesce ||
|
|
ec->use_adaptive_tx_coalesce ||
|
|
ec->pkt_rate_low ||
|
|
ec->rx_coalesce_usecs_low ||
|
|
ec->rx_max_coalesced_frames_low ||
|
|
ec->tx_coalesce_usecs_low ||
|
|
ec->tx_max_coalesced_frames_low ||
|
|
ec->pkt_rate_high ||
|
|
ec->rx_coalesce_usecs_high ||
|
|
ec->rx_max_coalesced_frames_high ||
|
|
ec->tx_coalesce_usecs_high ||
|
|
ec->tx_max_coalesced_frames_high ||
|
|
ec->rate_sample_interval)
|
|
return -ENOTSUPP;
|
|
|
|
/* Compute factor used to convert coalesce '_usecs' parameters to
|
|
* ME timestamp ticks. There are 16 ME clock cycles for each timestamp
|
|
* count.
|
|
*/
|
|
factor = nn->me_freq_mhz / 16;
|
|
|
|
/* Each pair of (usecs, max_frames) fields specifies that interrupts
|
|
* should be coalesced until
|
|
* (usecs > 0 && time_since_first_completion >= usecs) ||
|
|
* (max_frames > 0 && completed_frames >= max_frames)
|
|
*
|
|
* It is illegal to set both usecs and max_frames to zero as this would
|
|
* cause interrupts to never be generated. To disable coalescing, set
|
|
* usecs = 0 and max_frames = 1.
|
|
*
|
|
* Some implementations ignore the value of max_frames and use the
|
|
* condition time_since_first_completion >= usecs
|
|
*/
|
|
|
|
if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD))
|
|
return -EINVAL;
|
|
|
|
/* ensure valid configuration */
|
|
if (!ec->rx_coalesce_usecs && !ec->rx_max_coalesced_frames)
|
|
return -EINVAL;
|
|
|
|
if (!ec->tx_coalesce_usecs && !ec->tx_max_coalesced_frames)
|
|
return -EINVAL;
|
|
|
|
if (ec->rx_coalesce_usecs * factor >= ((1 << 16) - 1))
|
|
return -EINVAL;
|
|
|
|
if (ec->tx_coalesce_usecs * factor >= ((1 << 16) - 1))
|
|
return -EINVAL;
|
|
|
|
if (ec->rx_max_coalesced_frames >= ((1 << 16) - 1))
|
|
return -EINVAL;
|
|
|
|
if (ec->tx_max_coalesced_frames >= ((1 << 16) - 1))
|
|
return -EINVAL;
|
|
|
|
/* configuration is valid */
|
|
nn->rx_coalesce_usecs = ec->rx_coalesce_usecs;
|
|
nn->rx_coalesce_max_frames = ec->rx_max_coalesced_frames;
|
|
nn->tx_coalesce_usecs = ec->tx_coalesce_usecs;
|
|
nn->tx_coalesce_max_frames = ec->tx_max_coalesced_frames;
|
|
|
|
/* write configuration to device */
|
|
nfp_net_coalesce_write_cfg(nn);
|
|
return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_IRQMOD);
|
|
}
|
|
|
|
static const struct ethtool_ops nfp_net_ethtool_ops = {
|
|
.get_drvinfo = nfp_net_get_drvinfo,
|
|
.get_ringparam = nfp_net_get_ringparam,
|
|
.set_ringparam = nfp_net_set_ringparam,
|
|
.get_strings = nfp_net_get_strings,
|
|
.get_ethtool_stats = nfp_net_get_stats,
|
|
.get_sset_count = nfp_net_get_sset_count,
|
|
.get_rxnfc = nfp_net_get_rxnfc,
|
|
.set_rxnfc = nfp_net_set_rxnfc,
|
|
.get_rxfh_indir_size = nfp_net_get_rxfh_indir_size,
|
|
.get_rxfh_key_size = nfp_net_get_rxfh_key_size,
|
|
.get_rxfh = nfp_net_get_rxfh,
|
|
.set_rxfh = nfp_net_set_rxfh,
|
|
.get_regs_len = nfp_net_get_regs_len,
|
|
.get_regs = nfp_net_get_regs,
|
|
.get_coalesce = nfp_net_get_coalesce,
|
|
.set_coalesce = nfp_net_set_coalesce,
|
|
};
|
|
|
|
void nfp_net_set_ethtool_ops(struct net_device *netdev)
|
|
{
|
|
netdev->ethtool_ops = &nfp_net_ethtool_ops;
|
|
}
|