54dfc97b0b
gVNIC is a virtual network interface designed specifically for Google Compute Engine (GCE). It is required to support per-VM Tier_1 networking performance, and for using certain VM shapes on GCE. The NIC supports TSO, Rx and Tx checksum offloads, and RSS. It does not currently do hardware LRO, and thus the software-LRO in the host is used instead. It also supports jumbo frames. For each queue, the driver negotiates a set of pages with the NIC to serve as a fixed bounce buffer, this precludes the use of iflib. Reviewed-by: markj MFC-after: 2 weeks Differential Revision: https://reviews.freebsd.org/D39873
262 lines
10 KiB
C
262 lines
10 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2023 Google LLC
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "gve.h"
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static void
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gve_setup_rxq_sysctl(struct sysctl_ctx_list *ctx,
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struct sysctl_oid_list *child, struct gve_rx_ring *rxq)
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{
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struct sysctl_oid *node;
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struct sysctl_oid_list *list;
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struct gve_rxq_stats *stats;
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char namebuf[16];
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snprintf(namebuf, sizeof(namebuf), "rxq%d", rxq->com.id);
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node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, namebuf,
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CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "Receive Queue");
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list = SYSCTL_CHILDREN(node);
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stats = &rxq->stats;
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SYSCTL_ADD_COUNTER_U64(ctx, list, OID_AUTO,
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"rx_bytes", CTLFLAG_RD,
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&stats->rbytes, "Bytes received");
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SYSCTL_ADD_COUNTER_U64(ctx, list, OID_AUTO,
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"rx_packets", CTLFLAG_RD,
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&stats->rpackets, "Packets received");
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SYSCTL_ADD_COUNTER_U64(ctx, list, OID_AUTO, "rx_copybreak_cnt",
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CTLFLAG_RD, &stats->rx_copybreak_cnt,
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"Total frags with mbufs allocated for copybreak");
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SYSCTL_ADD_COUNTER_U64(ctx, list, OID_AUTO, "rx_frag_flip_cnt",
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CTLFLAG_RD, &stats->rx_frag_flip_cnt,
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"Total frags that allocated mbuf with page flip");
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SYSCTL_ADD_COUNTER_U64(ctx, list, OID_AUTO, "rx_frag_copy_cnt",
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CTLFLAG_RD, &stats->rx_frag_copy_cnt,
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"Total frags with mbuf that copied payload into mbuf");
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SYSCTL_ADD_COUNTER_U64(ctx, list, OID_AUTO, "rx_dropped_pkt",
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CTLFLAG_RD, &stats->rx_dropped_pkt,
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"Total rx packets dropped");
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SYSCTL_ADD_COUNTER_U64(ctx, list, OID_AUTO,
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"rx_dropped_pkt_desc_err", CTLFLAG_RD,
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&stats->rx_dropped_pkt_desc_err,
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"Packets dropped due to descriptor error");
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SYSCTL_ADD_COUNTER_U64(ctx, list, OID_AUTO,
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"rx_dropped_pkt_mbuf_alloc_fail", CTLFLAG_RD,
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&stats->rx_dropped_pkt_mbuf_alloc_fail,
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"Packets dropped due to failed mbuf allocation");
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SYSCTL_ADD_U32(ctx, list, OID_AUTO,
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"rx_completed_desc", CTLFLAG_RD,
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&rxq->cnt, 0, "Number of descriptors completed");
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SYSCTL_ADD_U32(ctx, list, OID_AUTO,
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"num_desc_posted", CTLFLAG_RD,
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&rxq->fill_cnt, rxq->fill_cnt,
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"Toal number of descriptors posted");
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}
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static void
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gve_setup_txq_sysctl(struct sysctl_ctx_list *ctx,
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struct sysctl_oid_list *child, struct gve_tx_ring *txq)
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{
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struct sysctl_oid *node;
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struct sysctl_oid_list *tx_list;
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struct gve_txq_stats *stats;
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char namebuf[16];
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snprintf(namebuf, sizeof(namebuf), "txq%d", txq->com.id);
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node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, namebuf,
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CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "Transmit Queue");
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tx_list = SYSCTL_CHILDREN(node);
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stats = &txq->stats;
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SYSCTL_ADD_U32(ctx, tx_list, OID_AUTO,
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"tx_posted_desc", CTLFLAG_RD,
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&txq->req, 0, "Number of descriptors posted by NIC");
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SYSCTL_ADD_U32(ctx, tx_list, OID_AUTO,
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"tx_completed_desc", CTLFLAG_RD,
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&txq->done, 0, "Number of descriptors completed");
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SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
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"tx_packets", CTLFLAG_RD,
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&stats->tpackets, "Packets transmitted");
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SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
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"tx_tso_packets", CTLFLAG_RD,
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&stats->tso_packet_cnt, "TSO Packets transmitted");
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SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
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"tx_bytes", CTLFLAG_RD,
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&stats->tbytes, "Bytes transmitted");
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SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
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"tx_dropped_pkt_nospace_device", CTLFLAG_RD,
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&stats->tx_dropped_pkt_nospace_device,
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"Packets dropped due to no space in device");
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SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
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"tx_dropped_pkt_nospace_bufring", CTLFLAG_RD,
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&stats->tx_dropped_pkt_nospace_bufring,
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"Packets dropped due to no space in br ring");
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SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
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"tx_dropped_pkt_vlan", CTLFLAG_RD,
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&stats->tx_dropped_pkt_vlan,
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"Dropped VLAN packets");
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}
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static void
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gve_setup_queue_stat_sysctl(struct sysctl_ctx_list *ctx, struct sysctl_oid_list *child,
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struct gve_priv *priv)
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{
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int i;
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for (i = 0; i < priv->rx_cfg.num_queues; i++) {
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gve_setup_rxq_sysctl(ctx, child, &priv->rx[i]);
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}
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for (i = 0; i < priv->tx_cfg.num_queues; i++) {
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gve_setup_txq_sysctl(ctx, child, &priv->tx[i]);
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}
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}
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static void
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gve_setup_adminq_stat_sysctl(struct sysctl_ctx_list *ctx,
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struct sysctl_oid_list *child, struct gve_priv *priv)
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{
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struct sysctl_oid *admin_node;
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struct sysctl_oid_list *admin_list;
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/* Admin queue stats */
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admin_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "adminq_stats",
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CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "Admin Queue statistics");
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admin_list = SYSCTL_CHILDREN(admin_node);
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SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "adminq_prod_cnt", CTLFLAG_RD,
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&priv->adminq_prod_cnt, 0, "Adminq Commands issued");
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SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "adminq_cmd_fail", CTLFLAG_RD,
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&priv->adminq_cmd_fail, 0, "Aqminq Failed commands");
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SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "adminq_timeouts", CTLFLAG_RD,
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&priv->adminq_timeouts, 0, "Adminq Timedout commands");
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SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "adminq_describe_device_cnt",
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CTLFLAG_RD, &priv->adminq_describe_device_cnt, 0,
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"adminq_describe_device_cnt");
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SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO,
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"adminq_cfg_device_resources_cnt", CTLFLAG_RD,
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&priv->adminq_cfg_device_resources_cnt, 0,
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"adminq_cfg_device_resources_cnt");
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SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO,
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"adminq_register_page_list_cnt", CTLFLAG_RD,
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&priv->adminq_register_page_list_cnt, 0,
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"adminq_register_page_list_cnt");
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SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO,
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"adminq_unregister_page_list_cnt", CTLFLAG_RD,
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&priv->adminq_unregister_page_list_cnt, 0,
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"adminq_unregister_page_list_cnt");
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SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "adminq_create_tx_queue_cnt",
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CTLFLAG_RD, &priv->adminq_create_tx_queue_cnt, 0,
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"adminq_create_tx_queue_cnt");
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SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "adminq_create_rx_queue_cnt",
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CTLFLAG_RD, &priv->adminq_create_rx_queue_cnt, 0,
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"adminq_create_rx_queue_cnt");
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SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "adminq_destroy_tx_queue_cnt",
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CTLFLAG_RD, &priv->adminq_destroy_tx_queue_cnt, 0,
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"adminq_destroy_tx_queue_cnt");
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SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "adminq_destroy_rx_queue_cnt",
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CTLFLAG_RD, &priv->adminq_destroy_rx_queue_cnt, 0,
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"adminq_destroy_rx_queue_cnt");
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SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO,
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"adminq_dcfg_device_resources_cnt", CTLFLAG_RD,
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&priv->adminq_dcfg_device_resources_cnt, 0,
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"adminq_dcfg_device_resources_cnt");
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SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO,
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"adminq_set_driver_parameter_cnt", CTLFLAG_RD,
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&priv->adminq_set_driver_parameter_cnt, 0,
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"adminq_set_driver_parameter_cnt");
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SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO,
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"adminq_verify_driver_compatibility_cnt", CTLFLAG_RD,
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&priv->adminq_verify_driver_compatibility_cnt, 0,
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"adminq_verify_driver_compatibility_cnt");
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}
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static void
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gve_setup_main_stat_sysctl(struct sysctl_ctx_list *ctx,
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struct sysctl_oid_list *child, struct gve_priv *priv)
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{
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struct sysctl_oid *main_node;
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struct sysctl_oid_list *main_list;
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/* Main stats */
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main_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "main_stats",
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CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "Main statistics");
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main_list = SYSCTL_CHILDREN(main_node);
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SYSCTL_ADD_U32(ctx, main_list, OID_AUTO, "interface_up_cnt", CTLFLAG_RD,
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&priv->interface_up_cnt, 0, "Times interface was set to up");
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SYSCTL_ADD_U32(ctx, main_list, OID_AUTO, "interface_down_cnt", CTLFLAG_RD,
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&priv->interface_down_cnt, 0, "Times interface was set to down");
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SYSCTL_ADD_U32(ctx, main_list, OID_AUTO, "reset_cnt", CTLFLAG_RD,
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&priv->reset_cnt, 0, "Times reset");
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}
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void gve_setup_sysctl(struct gve_priv *priv)
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{
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device_t dev;
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struct sysctl_ctx_list *ctx;
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struct sysctl_oid *tree;
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struct sysctl_oid_list *child;
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dev = priv->dev;
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ctx = device_get_sysctl_ctx(dev);
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tree = device_get_sysctl_tree(dev);
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child = SYSCTL_CHILDREN(tree);
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gve_setup_queue_stat_sysctl(ctx, child, priv);
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gve_setup_adminq_stat_sysctl(ctx, child, priv);
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gve_setup_main_stat_sysctl(ctx, child, priv);
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}
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void
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gve_accum_stats(struct gve_priv *priv, uint64_t *rpackets,
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uint64_t *rbytes, uint64_t *rx_dropped_pkt, uint64_t *tpackets,
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uint64_t *tbytes, uint64_t *tx_dropped_pkt)
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{
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struct gve_rxq_stats *rxqstats;
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struct gve_txq_stats *txqstats;
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int i;
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for (i = 0; i < priv->rx_cfg.num_queues; i++) {
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rxqstats = &priv->rx[i].stats;
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*rpackets += counter_u64_fetch(rxqstats->rpackets);
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*rbytes += counter_u64_fetch(rxqstats->rbytes);
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*rx_dropped_pkt += counter_u64_fetch(rxqstats->rx_dropped_pkt);
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}
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for (i = 0; i < priv->tx_cfg.num_queues; i++) {
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txqstats = &priv->tx[i].stats;
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*tpackets += counter_u64_fetch(txqstats->tpackets);
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*tbytes += counter_u64_fetch(txqstats->tbytes);
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*tx_dropped_pkt += counter_u64_fetch(txqstats->tx_dropped_pkt);
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}
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}
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