452 lines
13 KiB
C
452 lines
13 KiB
C
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
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/* Copyright (c) 2021, Microsoft Corporation. */
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#include <linux/inetdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/ethtool.h>
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#include <net/mana/mana.h>
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static const struct {
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char name[ETH_GSTRING_LEN];
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u16 offset;
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} mana_eth_stats[] = {
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{"stop_queue", offsetof(struct mana_ethtool_stats, stop_queue)},
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{"wake_queue", offsetof(struct mana_ethtool_stats, wake_queue)},
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{"hc_rx_discards_no_wqe", offsetof(struct mana_ethtool_stats,
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hc_rx_discards_no_wqe)},
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{"hc_rx_err_vport_disabled", offsetof(struct mana_ethtool_stats,
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hc_rx_err_vport_disabled)},
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{"hc_rx_bytes", offsetof(struct mana_ethtool_stats, hc_rx_bytes)},
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{"hc_rx_ucast_pkts", offsetof(struct mana_ethtool_stats,
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hc_rx_ucast_pkts)},
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{"hc_rx_ucast_bytes", offsetof(struct mana_ethtool_stats,
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hc_rx_ucast_bytes)},
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{"hc_rx_bcast_pkts", offsetof(struct mana_ethtool_stats,
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hc_rx_bcast_pkts)},
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{"hc_rx_bcast_bytes", offsetof(struct mana_ethtool_stats,
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hc_rx_bcast_bytes)},
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{"hc_rx_mcast_pkts", offsetof(struct mana_ethtool_stats,
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hc_rx_mcast_pkts)},
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{"hc_rx_mcast_bytes", offsetof(struct mana_ethtool_stats,
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hc_rx_mcast_bytes)},
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{"hc_tx_err_gf_disabled", offsetof(struct mana_ethtool_stats,
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hc_tx_err_gf_disabled)},
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{"hc_tx_err_vport_disabled", offsetof(struct mana_ethtool_stats,
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hc_tx_err_vport_disabled)},
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{"hc_tx_err_inval_vportoffset_pkt",
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offsetof(struct mana_ethtool_stats,
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hc_tx_err_inval_vportoffset_pkt)},
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{"hc_tx_err_vlan_enforcement", offsetof(struct mana_ethtool_stats,
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hc_tx_err_vlan_enforcement)},
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{"hc_tx_err_eth_type_enforcement",
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offsetof(struct mana_ethtool_stats, hc_tx_err_eth_type_enforcement)},
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{"hc_tx_err_sa_enforcement", offsetof(struct mana_ethtool_stats,
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hc_tx_err_sa_enforcement)},
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{"hc_tx_err_sqpdid_enforcement",
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offsetof(struct mana_ethtool_stats, hc_tx_err_sqpdid_enforcement)},
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{"hc_tx_err_cqpdid_enforcement",
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offsetof(struct mana_ethtool_stats, hc_tx_err_cqpdid_enforcement)},
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{"hc_tx_err_mtu_violation", offsetof(struct mana_ethtool_stats,
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hc_tx_err_mtu_violation)},
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{"hc_tx_err_inval_oob", offsetof(struct mana_ethtool_stats,
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hc_tx_err_inval_oob)},
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{"hc_tx_err_gdma", offsetof(struct mana_ethtool_stats,
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hc_tx_err_gdma)},
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{"hc_tx_bytes", offsetof(struct mana_ethtool_stats, hc_tx_bytes)},
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{"hc_tx_ucast_pkts", offsetof(struct mana_ethtool_stats,
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hc_tx_ucast_pkts)},
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{"hc_tx_ucast_bytes", offsetof(struct mana_ethtool_stats,
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hc_tx_ucast_bytes)},
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{"hc_tx_bcast_pkts", offsetof(struct mana_ethtool_stats,
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hc_tx_bcast_pkts)},
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{"hc_tx_bcast_bytes", offsetof(struct mana_ethtool_stats,
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hc_tx_bcast_bytes)},
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{"hc_tx_mcast_pkts", offsetof(struct mana_ethtool_stats,
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hc_tx_mcast_pkts)},
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{"hc_tx_mcast_bytes", offsetof(struct mana_ethtool_stats,
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hc_tx_mcast_bytes)},
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{"tx_cq_err", offsetof(struct mana_ethtool_stats, tx_cqe_err)},
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{"tx_cqe_unknown_type", offsetof(struct mana_ethtool_stats,
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tx_cqe_unknown_type)},
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{"rx_coalesced_err", offsetof(struct mana_ethtool_stats,
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rx_coalesced_err)},
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{"rx_cqe_unknown_type", offsetof(struct mana_ethtool_stats,
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rx_cqe_unknown_type)},
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};
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static int mana_get_sset_count(struct net_device *ndev, int stringset)
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{
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struct mana_port_context *apc = netdev_priv(ndev);
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unsigned int num_queues = apc->num_queues;
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if (stringset != ETH_SS_STATS)
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return -EINVAL;
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return ARRAY_SIZE(mana_eth_stats) + num_queues *
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(MANA_STATS_RX_COUNT + MANA_STATS_TX_COUNT);
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}
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static void mana_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
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{
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struct mana_port_context *apc = netdev_priv(ndev);
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unsigned int num_queues = apc->num_queues;
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int i;
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if (stringset != ETH_SS_STATS)
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return;
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for (i = 0; i < ARRAY_SIZE(mana_eth_stats); i++)
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ethtool_puts(&data, mana_eth_stats[i].name);
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for (i = 0; i < num_queues; i++) {
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ethtool_sprintf(&data, "rx_%d_packets", i);
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ethtool_sprintf(&data, "rx_%d_bytes", i);
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ethtool_sprintf(&data, "rx_%d_xdp_drop", i);
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ethtool_sprintf(&data, "rx_%d_xdp_tx", i);
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ethtool_sprintf(&data, "rx_%d_xdp_redirect", i);
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}
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for (i = 0; i < num_queues; i++) {
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ethtool_sprintf(&data, "tx_%d_packets", i);
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ethtool_sprintf(&data, "tx_%d_bytes", i);
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ethtool_sprintf(&data, "tx_%d_xdp_xmit", i);
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ethtool_sprintf(&data, "tx_%d_tso_packets", i);
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ethtool_sprintf(&data, "tx_%d_tso_bytes", i);
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ethtool_sprintf(&data, "tx_%d_tso_inner_packets", i);
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ethtool_sprintf(&data, "tx_%d_tso_inner_bytes", i);
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ethtool_sprintf(&data, "tx_%d_long_pkt_fmt", i);
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ethtool_sprintf(&data, "tx_%d_short_pkt_fmt", i);
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ethtool_sprintf(&data, "tx_%d_csum_partial", i);
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ethtool_sprintf(&data, "tx_%d_mana_map_err", i);
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}
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}
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static void mana_get_ethtool_stats(struct net_device *ndev,
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struct ethtool_stats *e_stats, u64 *data)
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{
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struct mana_port_context *apc = netdev_priv(ndev);
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unsigned int num_queues = apc->num_queues;
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void *eth_stats = &apc->eth_stats;
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struct mana_stats_rx *rx_stats;
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struct mana_stats_tx *tx_stats;
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unsigned int start;
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u64 packets, bytes;
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u64 xdp_redirect;
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u64 xdp_xmit;
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u64 xdp_drop;
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u64 xdp_tx;
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u64 tso_packets;
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u64 tso_bytes;
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u64 tso_inner_packets;
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u64 tso_inner_bytes;
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u64 long_pkt_fmt;
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u64 short_pkt_fmt;
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u64 csum_partial;
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u64 mana_map_err;
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int q, i = 0;
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if (!apc->port_is_up)
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return;
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/* we call mana function to update stats from GDMA */
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mana_query_gf_stats(apc);
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for (q = 0; q < ARRAY_SIZE(mana_eth_stats); q++)
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data[i++] = *(u64 *)(eth_stats + mana_eth_stats[q].offset);
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for (q = 0; q < num_queues; q++) {
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rx_stats = &apc->rxqs[q]->stats;
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do {
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start = u64_stats_fetch_begin(&rx_stats->syncp);
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packets = rx_stats->packets;
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bytes = rx_stats->bytes;
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xdp_drop = rx_stats->xdp_drop;
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xdp_tx = rx_stats->xdp_tx;
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xdp_redirect = rx_stats->xdp_redirect;
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} while (u64_stats_fetch_retry(&rx_stats->syncp, start));
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data[i++] = packets;
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data[i++] = bytes;
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data[i++] = xdp_drop;
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data[i++] = xdp_tx;
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data[i++] = xdp_redirect;
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}
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for (q = 0; q < num_queues; q++) {
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tx_stats = &apc->tx_qp[q].txq.stats;
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do {
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start = u64_stats_fetch_begin(&tx_stats->syncp);
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packets = tx_stats->packets;
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bytes = tx_stats->bytes;
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xdp_xmit = tx_stats->xdp_xmit;
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tso_packets = tx_stats->tso_packets;
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tso_bytes = tx_stats->tso_bytes;
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tso_inner_packets = tx_stats->tso_inner_packets;
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tso_inner_bytes = tx_stats->tso_inner_bytes;
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long_pkt_fmt = tx_stats->long_pkt_fmt;
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short_pkt_fmt = tx_stats->short_pkt_fmt;
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csum_partial = tx_stats->csum_partial;
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mana_map_err = tx_stats->mana_map_err;
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} while (u64_stats_fetch_retry(&tx_stats->syncp, start));
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data[i++] = packets;
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data[i++] = bytes;
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data[i++] = xdp_xmit;
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data[i++] = tso_packets;
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data[i++] = tso_bytes;
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data[i++] = tso_inner_packets;
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data[i++] = tso_inner_bytes;
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data[i++] = long_pkt_fmt;
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data[i++] = short_pkt_fmt;
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data[i++] = csum_partial;
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data[i++] = mana_map_err;
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}
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}
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static int mana_get_rxnfc(struct net_device *ndev, struct ethtool_rxnfc *cmd,
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u32 *rules)
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{
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struct mana_port_context *apc = netdev_priv(ndev);
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switch (cmd->cmd) {
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case ETHTOOL_GRXRINGS:
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cmd->data = apc->num_queues;
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return 0;
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}
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return -EOPNOTSUPP;
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}
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static u32 mana_get_rxfh_key_size(struct net_device *ndev)
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{
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return MANA_HASH_KEY_SIZE;
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}
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static u32 mana_rss_indir_size(struct net_device *ndev)
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{
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struct mana_port_context *apc = netdev_priv(ndev);
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return apc->indir_table_sz;
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}
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static int mana_get_rxfh(struct net_device *ndev,
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struct ethtool_rxfh_param *rxfh)
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{
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struct mana_port_context *apc = netdev_priv(ndev);
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int i;
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rxfh->hfunc = ETH_RSS_HASH_TOP; /* Toeplitz */
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if (rxfh->indir) {
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for (i = 0; i < apc->indir_table_sz; i++)
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rxfh->indir[i] = apc->indir_table[i];
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}
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if (rxfh->key)
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memcpy(rxfh->key, apc->hashkey, MANA_HASH_KEY_SIZE);
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return 0;
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}
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static int mana_set_rxfh(struct net_device *ndev,
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struct ethtool_rxfh_param *rxfh,
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struct netlink_ext_ack *extack)
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{
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struct mana_port_context *apc = netdev_priv(ndev);
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bool update_hash = false, update_table = false;
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u8 save_key[MANA_HASH_KEY_SIZE];
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u32 *save_table;
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int i, err;
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if (!apc->port_is_up)
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return -EOPNOTSUPP;
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if (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE &&
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rxfh->hfunc != ETH_RSS_HASH_TOP)
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return -EOPNOTSUPP;
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save_table = kcalloc(apc->indir_table_sz, sizeof(u32), GFP_KERNEL);
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if (!save_table)
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return -ENOMEM;
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if (rxfh->indir) {
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for (i = 0; i < apc->indir_table_sz; i++)
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if (rxfh->indir[i] >= apc->num_queues) {
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err = -EINVAL;
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goto cleanup;
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}
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update_table = true;
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for (i = 0; i < apc->indir_table_sz; i++) {
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save_table[i] = apc->indir_table[i];
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apc->indir_table[i] = rxfh->indir[i];
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}
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}
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if (rxfh->key) {
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update_hash = true;
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memcpy(save_key, apc->hashkey, MANA_HASH_KEY_SIZE);
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memcpy(apc->hashkey, rxfh->key, MANA_HASH_KEY_SIZE);
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}
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err = mana_config_rss(apc, TRI_STATE_TRUE, update_hash, update_table);
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if (err) { /* recover to original values */
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if (update_table) {
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for (i = 0; i < apc->indir_table_sz; i++)
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apc->indir_table[i] = save_table[i];
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}
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if (update_hash)
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memcpy(apc->hashkey, save_key, MANA_HASH_KEY_SIZE);
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mana_config_rss(apc, TRI_STATE_TRUE, update_hash, update_table);
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}
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cleanup:
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kfree(save_table);
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return err;
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}
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static void mana_get_channels(struct net_device *ndev,
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struct ethtool_channels *channel)
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{
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struct mana_port_context *apc = netdev_priv(ndev);
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channel->max_combined = apc->max_queues;
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channel->combined_count = apc->num_queues;
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}
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static int mana_set_channels(struct net_device *ndev,
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struct ethtool_channels *channels)
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{
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struct mana_port_context *apc = netdev_priv(ndev);
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unsigned int new_count = channels->combined_count;
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unsigned int old_count = apc->num_queues;
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int err;
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err = mana_pre_alloc_rxbufs(apc, ndev->mtu, new_count);
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if (err) {
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netdev_err(ndev, "Insufficient memory for new allocations");
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return err;
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}
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err = mana_detach(ndev, false);
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if (err) {
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netdev_err(ndev, "mana_detach failed: %d\n", err);
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goto out;
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}
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apc->num_queues = new_count;
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err = mana_attach(ndev);
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if (err) {
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apc->num_queues = old_count;
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netdev_err(ndev, "mana_attach failed: %d\n", err);
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}
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out:
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mana_pre_dealloc_rxbufs(apc);
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return err;
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}
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static void mana_get_ringparam(struct net_device *ndev,
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struct ethtool_ringparam *ring,
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struct kernel_ethtool_ringparam *kernel_ring,
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struct netlink_ext_ack *extack)
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{
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struct mana_port_context *apc = netdev_priv(ndev);
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ring->rx_pending = apc->rx_queue_size;
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ring->tx_pending = apc->tx_queue_size;
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ring->rx_max_pending = MAX_RX_BUFFERS_PER_QUEUE;
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ring->tx_max_pending = MAX_TX_BUFFERS_PER_QUEUE;
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}
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static int mana_set_ringparam(struct net_device *ndev,
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struct ethtool_ringparam *ring,
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struct kernel_ethtool_ringparam *kernel_ring,
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struct netlink_ext_ack *extack)
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{
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struct mana_port_context *apc = netdev_priv(ndev);
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u32 new_tx, new_rx;
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u32 old_tx, old_rx;
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int err;
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old_tx = apc->tx_queue_size;
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old_rx = apc->rx_queue_size;
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if (ring->tx_pending < MIN_TX_BUFFERS_PER_QUEUE) {
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NL_SET_ERR_MSG_FMT(extack, "tx:%d less than the min:%d", ring->tx_pending,
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MIN_TX_BUFFERS_PER_QUEUE);
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return -EINVAL;
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}
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if (ring->rx_pending < MIN_RX_BUFFERS_PER_QUEUE) {
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NL_SET_ERR_MSG_FMT(extack, "rx:%d less than the min:%d", ring->rx_pending,
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MIN_RX_BUFFERS_PER_QUEUE);
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return -EINVAL;
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}
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new_rx = roundup_pow_of_two(ring->rx_pending);
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new_tx = roundup_pow_of_two(ring->tx_pending);
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netdev_info(ndev, "Using nearest power of 2 values for Txq:%d Rxq:%d\n",
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new_tx, new_rx);
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/* pre-allocating new buffers to prevent failures in mana_attach() later */
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apc->rx_queue_size = new_rx;
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err = mana_pre_alloc_rxbufs(apc, ndev->mtu, apc->num_queues);
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apc->rx_queue_size = old_rx;
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if (err) {
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netdev_err(ndev, "Insufficient memory for new allocations\n");
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return err;
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}
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err = mana_detach(ndev, false);
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if (err) {
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netdev_err(ndev, "mana_detach failed: %d\n", err);
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goto out;
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}
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apc->tx_queue_size = new_tx;
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apc->rx_queue_size = new_rx;
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err = mana_attach(ndev);
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if (err) {
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netdev_err(ndev, "mana_attach failed: %d\n", err);
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apc->tx_queue_size = old_tx;
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apc->rx_queue_size = old_rx;
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}
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out:
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mana_pre_dealloc_rxbufs(apc);
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return err;
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}
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static int mana_get_link_ksettings(struct net_device *ndev,
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struct ethtool_link_ksettings *cmd)
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{
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cmd->base.duplex = DUPLEX_FULL;
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cmd->base.port = PORT_OTHER;
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return 0;
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}
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const struct ethtool_ops mana_ethtool_ops = {
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.get_ethtool_stats = mana_get_ethtool_stats,
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.get_sset_count = mana_get_sset_count,
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.get_strings = mana_get_strings,
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|
.get_rxnfc = mana_get_rxnfc,
|
|
.get_rxfh_key_size = mana_get_rxfh_key_size,
|
|
.get_rxfh_indir_size = mana_rss_indir_size,
|
|
.get_rxfh = mana_get_rxfh,
|
|
.set_rxfh = mana_set_rxfh,
|
|
.get_channels = mana_get_channels,
|
|
.set_channels = mana_set_channels,
|
|
.get_ringparam = mana_get_ringparam,
|
|
.set_ringparam = mana_set_ringparam,
|
|
.get_link_ksettings = mana_get_link_ksettings,
|
|
.get_link = ethtool_op_get_link,
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|
};
|