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|
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2016-2018 Microsoft Corporation
* Copyright(c) 2013-2016 Brocade Communications Systems, Inc.
* All rights reserved.
*/
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <rte_ethdev.h>
#include <rte_memcpy.h>
#include <rte_string_fns.h>
#include <rte_memzone.h>
#include <rte_malloc.h>
#include <rte_atomic.h>
#include <rte_branch_prediction.h>
#include <rte_ether.h>
#include <rte_ethdev_driver.h>
#include <rte_cycles.h>
#include <rte_errno.h>
#include <rte_memory.h>
#include <rte_eal.h>
#include <rte_dev.h>
#include <rte_bus_vmbus.h>
#include "hn_logs.h"
#include "hn_var.h"
#include "hn_rndis.h"
#include "hn_nvs.h"
#include "ndis.h"
#define HN_TX_OFFLOAD_CAPS (DEV_TX_OFFLOAD_IPV4_CKSUM | \
DEV_TX_OFFLOAD_TCP_CKSUM | \
DEV_TX_OFFLOAD_UDP_CKSUM | \
DEV_TX_OFFLOAD_TCP_TSO | \
DEV_TX_OFFLOAD_MULTI_SEGS | \
DEV_TX_OFFLOAD_VLAN_INSERT)
#define HN_RX_OFFLOAD_CAPS (DEV_RX_OFFLOAD_CHECKSUM | \
DEV_RX_OFFLOAD_VLAN_STRIP | \
DEV_RX_OFFLOAD_CRC_STRIP)
int hn_logtype_init;
int hn_logtype_driver;
struct hn_xstats_name_off {
char name[RTE_ETH_XSTATS_NAME_SIZE];
unsigned int offset;
};
static const struct hn_xstats_name_off hn_stat_strings[] = {
{ "good_packets", offsetof(struct hn_stats, packets) },
{ "good_bytes", offsetof(struct hn_stats, bytes) },
{ "errors", offsetof(struct hn_stats, errors) },
{ "allocation_failed", offsetof(struct hn_stats, nomemory) },
{ "multicast_packets", offsetof(struct hn_stats, multicast) },
{ "broadcast_packets", offsetof(struct hn_stats, broadcast) },
{ "undersize_packets", offsetof(struct hn_stats, size_bins[0]) },
{ "size_64_packets", offsetof(struct hn_stats, size_bins[1]) },
{ "size_65_127_packets", offsetof(struct hn_stats, size_bins[2]) },
{ "size_128_255_packets", offsetof(struct hn_stats, size_bins[3]) },
{ "size_256_511_packets", offsetof(struct hn_stats, size_bins[4]) },
{ "size_512_1023_packets", offsetof(struct hn_stats, size_bins[5]) },
{ "size_1024_1518_packets", offsetof(struct hn_stats, size_bins[6]) },
{ "size_1519_max_packets", offsetof(struct hn_stats, size_bins[7]) },
};
static struct rte_eth_dev *
eth_dev_vmbus_allocate(struct rte_vmbus_device *dev, size_t private_data_size)
{
struct rte_eth_dev *eth_dev;
const char *name;
if (!dev)
return NULL;
name = dev->device.name;
if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
eth_dev = rte_eth_dev_allocate(name);
if (!eth_dev) {
PMD_DRV_LOG(NOTICE, "can not allocate rte ethdev");
return NULL;
}
if (private_data_size) {
eth_dev->data->dev_private =
rte_zmalloc_socket(name, private_data_size,
RTE_CACHE_LINE_SIZE, dev->device.numa_node);
if (!eth_dev->data->dev_private) {
PMD_DRV_LOG(NOTICE, "can not allocate driver data");
rte_eth_dev_release_port(eth_dev);
return NULL;
}
}
} else {
eth_dev = rte_eth_dev_attach_secondary(name);
if (!eth_dev) {
PMD_DRV_LOG(NOTICE, "can not attach secondary");
return NULL;
}
}
eth_dev->device = &dev->device;
eth_dev->intr_handle = &dev->intr_handle;
return eth_dev;
}
static void
eth_dev_vmbus_release(struct rte_eth_dev *eth_dev)
{
/* free ether device */
rte_eth_dev_release_port(eth_dev);
if (rte_eal_process_type() == RTE_PROC_PRIMARY)
rte_free(eth_dev->data->dev_private);
eth_dev->data->dev_private = NULL;
/*
* Secondary process will check the name to attach.
* Clear this field to avoid attaching a released ports.
*/
eth_dev->data->name[0] = '\0';
eth_dev->device = NULL;
eth_dev->intr_handle = NULL;
}
/* Update link status.
* Note: the DPDK definition of "wait_to_complete"
* means block this call until link is up.
* which is not worth supporting.
*/
static int
hn_dev_link_update(struct rte_eth_dev *dev,
__rte_unused int wait_to_complete)
{
struct hn_data *hv = dev->data->dev_private;
struct rte_eth_link link, old;
int error;
old = dev->data->dev_link;
error = hn_rndis_get_linkstatus(hv);
if (error)
return error;
hn_rndis_get_linkspeed(hv);
link = (struct rte_eth_link) {
.link_duplex = ETH_LINK_FULL_DUPLEX,
.link_autoneg = ETH_LINK_SPEED_FIXED,
.link_speed = hv->link_speed / 10000,
};
if (hv->link_status == NDIS_MEDIA_STATE_CONNECTED)
link.link_status = ETH_LINK_UP;
else
link.link_status = ETH_LINK_DOWN;
if (old.link_status == link.link_status)
return 0;
PMD_INIT_LOG(DEBUG, "Port %d is %s", dev->data->port_id,
(link.link_status == ETH_LINK_UP) ? "up" : "down");
return rte_eth_linkstatus_set(dev, &link);
}
static void hn_dev_info_get(struct rte_eth_dev *dev,
struct rte_eth_dev_info *dev_info)
{
struct hn_data *hv = dev->data->dev_private;
dev_info->speed_capa = ETH_LINK_SPEED_10G;
dev_info->min_rx_bufsize = HN_MIN_RX_BUF_SIZE;
dev_info->max_rx_pktlen = HN_MAX_XFER_LEN;
dev_info->max_mac_addrs = 1;
dev_info->hash_key_size = NDIS_HASH_KEYSIZE_TOEPLITZ;
dev_info->flow_type_rss_offloads =
ETH_RSS_IPV4 | ETH_RSS_IPV6 | ETH_RSS_TCP | ETH_RSS_UDP;
dev_info->max_rx_queues = hv->max_queues;
dev_info->max_tx_queues = hv->max_queues;
hn_rndis_get_offload(hv, dev_info);
}
static void
hn_dev_promiscuous_enable(struct rte_eth_dev *dev)
{
struct hn_data *hv = dev->data->dev_private;
hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_PROMISCUOUS);
}
static void
hn_dev_promiscuous_disable(struct rte_eth_dev *dev)
{
struct hn_data *hv = dev->data->dev_private;
uint32_t filter;
filter = NDIS_PACKET_TYPE_DIRECTED | NDIS_PACKET_TYPE_BROADCAST;
if (dev->data->all_multicast)
filter |= NDIS_PACKET_TYPE_ALL_MULTICAST;
hn_rndis_set_rxfilter(hv, filter);
}
static void
hn_dev_allmulticast_enable(struct rte_eth_dev *dev)
{
struct hn_data *hv = dev->data->dev_private;
hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_DIRECTED |
NDIS_PACKET_TYPE_ALL_MULTICAST |
NDIS_PACKET_TYPE_BROADCAST);
}
static void
hn_dev_allmulticast_disable(struct rte_eth_dev *dev)
{
struct hn_data *hv = dev->data->dev_private;
hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_DIRECTED |
NDIS_PACKET_TYPE_BROADCAST);
}
/* Setup shared rx/tx queue data */
static int hn_subchan_configure(struct hn_data *hv,
uint32_t subchan)
{
struct vmbus_channel *primary = hn_primary_chan(hv);
int err;
unsigned int retry = 0;
PMD_DRV_LOG(DEBUG,
"open %u subchannels", subchan);
/* Send create sub channels command */
err = hn_nvs_alloc_subchans(hv, &subchan);
if (err)
return err;
while (subchan > 0) {
struct vmbus_channel *new_sc;
uint16_t chn_index;
err = rte_vmbus_subchan_open(primary, &new_sc);
if (err == -ENOENT && ++retry < 1000) {
/* This can happen if not ready yet */
rte_delay_ms(10);
continue;
}
if (err) {
PMD_DRV_LOG(ERR,
"open subchannel failed: %d", err);
return err;
}
retry = 0;
chn_index = rte_vmbus_sub_channel_index(new_sc);
if (chn_index == 0 || chn_index > hv->max_queues) {
PMD_DRV_LOG(ERR,
"Invalid subchannel offermsg channel %u",
chn_index);
return -EIO;
}
PMD_DRV_LOG(DEBUG, "new sub channel %u", chn_index);
hv->channels[chn_index] = new_sc;
--subchan;
}
return err;
}
static int hn_dev_configure(struct rte_eth_dev *dev)
{
const struct rte_eth_conf *dev_conf = &dev->data->dev_conf;
const struct rte_eth_rxmode *rxmode = &dev_conf->rxmode;
const struct rte_eth_txmode *txmode = &dev_conf->txmode;
const struct rte_eth_rss_conf *rss_conf =
&dev_conf->rx_adv_conf.rss_conf;
struct hn_data *hv = dev->data->dev_private;
uint64_t unsupported;
int err, subchan;
PMD_INIT_FUNC_TRACE();
unsupported = txmode->offloads & ~HN_TX_OFFLOAD_CAPS;
if (unsupported) {
PMD_DRV_LOG(NOTICE,
"unsupported TX offload: %#" PRIx64,
unsupported);
return -EINVAL;
}
unsupported = rxmode->offloads & ~HN_RX_OFFLOAD_CAPS;
if (unsupported) {
PMD_DRV_LOG(NOTICE,
"unsupported RX offload: %#" PRIx64,
rxmode->offloads);
return -EINVAL;
}
err = hn_rndis_conf_offload(hv, txmode->offloads,
rxmode->offloads);
if (err) {
PMD_DRV_LOG(NOTICE,
"offload configure failed");
return err;
}
hv->num_queues = RTE_MAX(dev->data->nb_rx_queues,
dev->data->nb_tx_queues);
subchan = hv->num_queues - 1;
if (subchan > 0) {
err = hn_subchan_configure(hv, subchan);
if (err) {
PMD_DRV_LOG(NOTICE,
"subchannel configuration failed");
return err;
}
err = hn_rndis_conf_rss(hv, rss_conf);
if (err) {
PMD_DRV_LOG(NOTICE,
"rss configuration failed");
return err;
}
}
return 0;
}
static int hn_dev_stats_get(struct rte_eth_dev *dev,
struct rte_eth_stats *stats)
{
unsigned int i;
for (i = 0; i < dev->data->nb_tx_queues; i++) {
const struct hn_tx_queue *txq = dev->data->tx_queues[i];
if (!txq)
continue;
stats->opackets += txq->stats.packets;
stats->obytes += txq->stats.bytes;
stats->oerrors += txq->stats.errors + txq->stats.nomemory;
if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
stats->q_opackets[i] = txq->stats.packets;
stats->q_obytes[i] = txq->stats.bytes;
}
}
for (i = 0; i < dev->data->nb_rx_queues; i++) {
const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
if (!rxq)
continue;
stats->ipackets += rxq->stats.packets;
stats->ibytes += rxq->stats.bytes;
stats->ierrors += rxq->stats.errors;
stats->imissed += rxq->ring_full;
if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
stats->q_ipackets[i] = rxq->stats.packets;
stats->q_ibytes[i] = rxq->stats.bytes;
}
}
stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
return 0;
}
static void
hn_dev_stats_reset(struct rte_eth_dev *dev)
{
unsigned int i;
PMD_INIT_FUNC_TRACE();
for (i = 0; i < dev->data->nb_tx_queues; i++) {
struct hn_tx_queue *txq = dev->data->tx_queues[i];
if (!txq)
continue;
memset(&txq->stats, 0, sizeof(struct hn_stats));
}
for (i = 0; i < dev->data->nb_rx_queues; i++) {
struct hn_rx_queue *rxq = dev->data->rx_queues[i];
if (!rxq)
continue;
memset(&rxq->stats, 0, sizeof(struct hn_stats));
rxq->ring_full = 0;
}
}
static int
hn_dev_xstats_get_names(struct rte_eth_dev *dev,
struct rte_eth_xstat_name *xstats_names,
__rte_unused unsigned int limit)
{
unsigned int i, t, count = 0;
PMD_INIT_FUNC_TRACE();
if (!xstats_names)
return dev->data->nb_tx_queues * RTE_DIM(hn_stat_strings)
+ dev->data->nb_rx_queues * RTE_DIM(hn_stat_strings);
/* Note: limit checked in rte_eth_xstats_names() */
for (i = 0; i < dev->data->nb_tx_queues; i++) {
const struct hn_tx_queue *txq = dev->data->tx_queues[i];
if (!txq)
continue;
for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
snprintf(xstats_names[count++].name,
RTE_ETH_XSTATS_NAME_SIZE,
"tx_q%u_%s", i, hn_stat_strings[t].name);
}
for (i = 0; i < dev->data->nb_rx_queues; i++) {
const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
if (!rxq)
continue;
for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
snprintf(xstats_names[count++].name,
RTE_ETH_XSTATS_NAME_SIZE,
"rx_q%u_%s", i,
hn_stat_strings[t].name);
}
return count;
}
static int
hn_dev_xstats_get(struct rte_eth_dev *dev,
struct rte_eth_xstat *xstats,
unsigned int n)
{
unsigned int i, t, count = 0;
const unsigned int nstats =
dev->data->nb_tx_queues * RTE_DIM(hn_stat_strings)
+ dev->data->nb_rx_queues * RTE_DIM(hn_stat_strings);
const char *stats;
PMD_INIT_FUNC_TRACE();
if (n < nstats)
return nstats;
for (i = 0; i < dev->data->nb_tx_queues; i++) {
const struct hn_tx_queue *txq = dev->data->tx_queues[i];
if (!txq)
continue;
stats = (const char *)&txq->stats;
for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
xstats[count++].value = *(const uint64_t *)
(stats + hn_stat_strings[t].offset);
}
for (i = 0; i < dev->data->nb_rx_queues; i++) {
const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
if (!rxq)
continue;
stats = (const char *)&rxq->stats;
for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
xstats[count++].value = *(const uint64_t *)
(stats + hn_stat_strings[t].offset);
}
return count;
}
static int
hn_dev_start(struct rte_eth_dev *dev)
{
struct hn_data *hv = dev->data->dev_private;
PMD_INIT_FUNC_TRACE();
/* check if lsc interrupt feature is enabled */
if (dev->data->dev_conf.intr_conf.lsc) {
PMD_DRV_LOG(ERR, "link status not supported yet");
return -ENOTSUP;
}
return hn_rndis_set_rxfilter(hv,
NDIS_PACKET_TYPE_BROADCAST |
NDIS_PACKET_TYPE_ALL_MULTICAST |
NDIS_PACKET_TYPE_DIRECTED);
}
static void
hn_dev_stop(struct rte_eth_dev *dev)
{
struct hn_data *hv = dev->data->dev_private;
PMD_INIT_FUNC_TRACE();
hn_rndis_set_rxfilter(hv, 0);
}
static void
hn_dev_close(struct rte_eth_dev *dev __rte_unused)
{
PMD_INIT_LOG(DEBUG, "close");
}
static const struct eth_dev_ops hn_eth_dev_ops = {
.dev_configure = hn_dev_configure,
.dev_start = hn_dev_start,
.dev_stop = hn_dev_stop,
.dev_close = hn_dev_close,
.dev_infos_get = hn_dev_info_get,
.txq_info_get = hn_dev_tx_queue_info,
.rxq_info_get = hn_dev_rx_queue_info,
.promiscuous_enable = hn_dev_promiscuous_enable,
.promiscuous_disable = hn_dev_promiscuous_disable,
.allmulticast_enable = hn_dev_allmulticast_enable,
.allmulticast_disable = hn_dev_allmulticast_disable,
.tx_queue_setup = hn_dev_tx_queue_setup,
.tx_queue_release = hn_dev_tx_queue_release,
.rx_queue_setup = hn_dev_rx_queue_setup,
.rx_queue_release = hn_dev_rx_queue_release,
.link_update = hn_dev_link_update,
.stats_get = hn_dev_stats_get,
.xstats_get = hn_dev_xstats_get,
.xstats_get_names = hn_dev_xstats_get_names,
.stats_reset = hn_dev_stats_reset,
.xstats_reset = hn_dev_stats_reset,
};
/*
* Setup connection between PMD and kernel.
*/
static int
hn_attach(struct hn_data *hv, unsigned int mtu)
{
int error;
/* Attach NVS */
error = hn_nvs_attach(hv, mtu);
if (error)
goto failed_nvs;
/* Attach RNDIS */
error = hn_rndis_attach(hv);
if (error)
goto failed_rndis;
/*
* NOTE:
* Under certain conditions on certain versions of Hyper-V,
* the RNDIS rxfilter is _not_ zero on the hypervisor side
* after the successful RNDIS initialization.
*/
hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_NONE);
return 0;
failed_rndis:
hn_nvs_detach(hv);
failed_nvs:
return error;
}
static void
hn_detach(struct hn_data *hv)
{
hn_nvs_detach(hv);
hn_rndis_detach(hv);
}
static int
eth_hn_dev_init(struct rte_eth_dev *eth_dev)
{
struct hn_data *hv = eth_dev->data->dev_private;
struct rte_device *device = eth_dev->device;
struct rte_vmbus_device *vmbus;
unsigned int rxr_cnt;
int err, max_chan;
PMD_INIT_FUNC_TRACE();
vmbus = container_of(device, struct rte_vmbus_device, device);
eth_dev->dev_ops = &hn_eth_dev_ops;
eth_dev->tx_pkt_burst = &hn_xmit_pkts;
eth_dev->rx_pkt_burst = &hn_recv_pkts;
/*
* for secondary processes, we don't initialize any further as primary
* has already done this work.
*/
if (rte_eal_process_type() != RTE_PROC_PRIMARY)
return 0;
/* Since Hyper-V only supports one MAC address, just use local data */
eth_dev->data->mac_addrs = &hv->mac_addr;
hv->vmbus = vmbus;
hv->rxbuf_res = &vmbus->resource[HV_RECV_BUF_MAP];
hv->chim_res = &vmbus->resource[HV_SEND_BUF_MAP];
hv->port_id = eth_dev->data->port_id;
/* Initialize primary channel input for control operations */
err = rte_vmbus_chan_open(vmbus, &hv->channels[0]);
if (err)
return err;
hv->primary = hn_rx_queue_alloc(hv, 0,
eth_dev->device->numa_node);
if (!hv->primary)
return -ENOMEM;
err = hn_attach(hv, ETHER_MTU);
if (err)
goto failed;
err = hn_tx_pool_init(eth_dev);
if (err)
goto failed;
err = hn_rndis_get_eaddr(hv, hv->mac_addr.addr_bytes);
if (err)
goto failed;
max_chan = rte_vmbus_max_channels(vmbus);
PMD_INIT_LOG(DEBUG, "VMBus max channels %d", max_chan);
if (max_chan <= 0)
goto failed;
if (hn_rndis_query_rsscaps(hv, &rxr_cnt) != 0)
rxr_cnt = 1;
hv->max_queues = RTE_MIN(rxr_cnt, (unsigned int)max_chan);
return 0;
failed:
PMD_INIT_LOG(NOTICE, "device init failed");
hn_detach(hv);
return err;
}
static int
eth_hn_dev_uninit(struct rte_eth_dev *eth_dev)
{
struct hn_data *hv = eth_dev->data->dev_private;
PMD_INIT_FUNC_TRACE();
if (rte_eal_process_type() != RTE_PROC_PRIMARY)
return 0;
hn_dev_stop(eth_dev);
hn_dev_close(eth_dev);
eth_dev->dev_ops = NULL;
eth_dev->tx_pkt_burst = NULL;
eth_dev->rx_pkt_burst = NULL;
hn_detach(hv);
rte_vmbus_chan_close(hv->primary->chan);
rte_free(hv->primary);
eth_dev->data->mac_addrs = NULL;
return 0;
}
static int eth_hn_probe(struct rte_vmbus_driver *drv __rte_unused,
struct rte_vmbus_device *dev)
{
struct rte_eth_dev *eth_dev;
int ret;
PMD_INIT_FUNC_TRACE();
eth_dev = eth_dev_vmbus_allocate(dev, sizeof(struct hn_data));
if (!eth_dev)
return -ENOMEM;
ret = eth_hn_dev_init(eth_dev);
if (ret)
eth_dev_vmbus_release(eth_dev);
else
rte_eth_dev_probing_finish(eth_dev);
return ret;
}
static int eth_hn_remove(struct rte_vmbus_device *dev)
{
struct rte_eth_dev *eth_dev;
int ret;
PMD_INIT_FUNC_TRACE();
eth_dev = rte_eth_dev_allocated(dev->device.name);
if (!eth_dev)
return -ENODEV;
ret = eth_hn_dev_uninit(eth_dev);
if (ret)
return ret;
eth_dev_vmbus_release(eth_dev);
return 0;
}
/* Network device GUID */
static const rte_uuid_t hn_net_ids[] = {
/* f8615163-df3e-46c5-913f-f2d2f965ed0e */
RTE_UUID_INIT(0xf8615163, 0xdf3e, 0x46c5, 0x913f, 0xf2d2f965ed0eULL),
{ 0 }
};
static struct rte_vmbus_driver rte_netvsc_pmd = {
.id_table = hn_net_ids,
.probe = eth_hn_probe,
.remove = eth_hn_remove,
};
RTE_PMD_REGISTER_VMBUS(net_netvsc, rte_netvsc_pmd);
RTE_PMD_REGISTER_KMOD_DEP(net_netvsc, "* uio_hv_generic");
RTE_INIT(hn_init_log);
static void
hn_init_log(void)
{
hn_logtype_init = rte_log_register("pmd.net.netvsc.init");
if (hn_logtype_init >= 0)
rte_log_set_level(hn_logtype_init, RTE_LOG_NOTICE);
hn_logtype_driver = rte_log_register("pmd.net.netvsc.driver");
if (hn_logtype_driver >= 0)
rte_log_set_level(hn_logtype_driver, RTE_LOG_NOTICE);
}
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