numam-dpdk/drivers/net/failsafe/failsafe.c
Jerin Jacob 9c99878aa1 log: introduce logtype register macro
Introduce the RTE_LOG_REGISTER macro to avoid the code duplication
in the logtype registration process.

It is a wrapper macro for declaring the logtype, registering it and
setting its level in the constructor context.

Signed-off-by: Jerin Jacob <jerinj@marvell.com>
Acked-by: Adam Dybkowski <adamx.dybkowski@intel.com>
Acked-by: Sachin Saxena <sachin.saxena@nxp.com>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>
2020-07-03 15:52:51 +02:00

412 lines
10 KiB
C

/* SPDX-License-Identifier: BSD-3-Clause
* Copyright 2017 6WIND S.A.
* Copyright 2017 Mellanox Technologies, Ltd
*/
#include <stdbool.h>
#include <rte_alarm.h>
#include <rte_malloc.h>
#include <rte_ethdev_driver.h>
#include <rte_ethdev_vdev.h>
#include <rte_devargs.h>
#include <rte_kvargs.h>
#include <rte_bus_vdev.h>
#include "failsafe_private.h"
const char pmd_failsafe_driver_name[] = FAILSAFE_DRIVER_NAME;
static const struct rte_eth_link eth_link = {
.link_speed = ETH_SPEED_NUM_10G,
.link_duplex = ETH_LINK_FULL_DUPLEX,
.link_status = ETH_LINK_UP,
.link_autoneg = ETH_LINK_AUTONEG,
};
static int
fs_sub_device_alloc(struct rte_eth_dev *dev,
const char *params)
{
uint8_t nb_subs;
int ret;
int i;
struct sub_device *sdev;
uint8_t sdev_iterator;
ret = failsafe_args_count_subdevice(dev, params);
if (ret)
return ret;
if (PRIV(dev)->subs_tail > FAILSAFE_MAX_ETHPORTS) {
ERROR("Cannot allocate more than %d ports",
FAILSAFE_MAX_ETHPORTS);
return -ENOSPC;
}
nb_subs = PRIV(dev)->subs_tail;
PRIV(dev)->subs = rte_zmalloc(NULL,
sizeof(struct sub_device) * nb_subs,
RTE_CACHE_LINE_SIZE);
if (PRIV(dev)->subs == NULL) {
ERROR("Could not allocate sub_devices");
return -ENOMEM;
}
/* Initiate static sub devices linked list. */
for (i = 1; i < nb_subs; i++)
PRIV(dev)->subs[i - 1].next = PRIV(dev)->subs + i;
PRIV(dev)->subs[i - 1].next = PRIV(dev)->subs;
FOREACH_SUBDEV(sdev, sdev_iterator, dev) {
sdev->sdev_port_id = RTE_MAX_ETHPORTS;
}
return 0;
}
static void
fs_sub_device_free(struct rte_eth_dev *dev)
{
rte_free(PRIV(dev)->subs);
}
static void fs_hotplug_alarm(void *arg);
int
failsafe_hotplug_alarm_install(struct rte_eth_dev *dev)
{
int ret;
if (dev == NULL)
return -EINVAL;
if (PRIV(dev)->pending_alarm)
return 0;
ret = rte_eal_alarm_set(failsafe_hotplug_poll * 1000,
fs_hotplug_alarm,
dev);
if (ret) {
ERROR("Could not set up plug-in event detection");
return ret;
}
PRIV(dev)->pending_alarm = 1;
return 0;
}
int
failsafe_hotplug_alarm_cancel(struct rte_eth_dev *dev)
{
int ret = 0;
rte_errno = 0;
rte_eal_alarm_cancel(fs_hotplug_alarm, dev);
if (rte_errno) {
ERROR("rte_eal_alarm_cancel failed (errno: %s)",
strerror(rte_errno));
ret = -rte_errno;
} else {
PRIV(dev)->pending_alarm = 0;
}
return ret;
}
static void
fs_hotplug_alarm(void *arg)
{
struct rte_eth_dev *dev = arg;
struct sub_device *sdev;
int ret;
uint8_t i;
if (!PRIV(dev)->pending_alarm)
return;
PRIV(dev)->pending_alarm = 0;
FOREACH_SUBDEV(sdev, i, dev)
if (sdev->state != PRIV(dev)->state)
break;
/* if we have non-probed device */
if (i != PRIV(dev)->subs_tail) {
if (fs_lock(dev, 1) != 0)
goto reinstall;
ret = failsafe_eth_dev_state_sync(dev);
fs_unlock(dev, 1);
if (ret)
ERROR("Unable to synchronize sub_device state");
}
failsafe_dev_remove(dev);
reinstall:
ret = failsafe_hotplug_alarm_install(dev);
if (ret)
ERROR("Unable to set up next alarm");
}
static int
fs_mutex_init(struct fs_priv *priv)
{
int ret;
pthread_mutexattr_t attr;
ret = pthread_mutexattr_init(&attr);
if (ret) {
ERROR("Cannot initiate mutex attributes - %s", strerror(ret));
return ret;
}
/* Allow mutex relocks for the thread holding the mutex. */
ret = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
if (ret) {
ERROR("Cannot set mutex type - %s", strerror(ret));
return ret;
}
ret = pthread_mutex_init(&priv->hotplug_mutex, &attr);
if (ret) {
ERROR("Cannot initiate mutex - %s", strerror(ret));
return ret;
}
return 0;
}
static int
fs_eth_dev_create(struct rte_vdev_device *vdev)
{
struct rte_eth_dev *dev;
struct rte_ether_addr *mac;
struct fs_priv *priv;
struct sub_device *sdev;
const char *params;
unsigned int socket_id;
uint8_t i;
int ret;
dev = NULL;
priv = NULL;
socket_id = rte_socket_id();
INFO("Creating fail-safe device on NUMA socket %u", socket_id);
params = rte_vdev_device_args(vdev);
if (params == NULL) {
ERROR("This PMD requires sub-devices, none provided");
return -1;
}
dev = rte_eth_vdev_allocate(vdev, sizeof(*priv));
if (dev == NULL) {
ERROR("Unable to allocate rte_eth_dev");
return -1;
}
priv = PRIV(dev);
priv->data = dev->data;
priv->rxp = FS_RX_PROXY_INIT;
dev->dev_ops = &failsafe_ops;
dev->data->mac_addrs = &PRIV(dev)->mac_addrs[0];
dev->data->dev_link = eth_link;
PRIV(dev)->nb_mac_addr = 1;
TAILQ_INIT(&PRIV(dev)->flow_list);
dev->rx_pkt_burst = (eth_rx_burst_t)&failsafe_rx_burst;
dev->tx_pkt_burst = (eth_tx_burst_t)&failsafe_tx_burst;
ret = fs_sub_device_alloc(dev, params);
if (ret) {
ERROR("Could not allocate sub_devices");
goto free_dev;
}
ret = failsafe_args_parse(dev, params);
if (ret)
goto free_subs;
ret = rte_eth_dev_owner_new(&priv->my_owner.id);
if (ret) {
ERROR("Failed to get unique owner identifier");
goto free_args;
}
snprintf(priv->my_owner.name, sizeof(priv->my_owner.name),
FAILSAFE_OWNER_NAME);
DEBUG("Failsafe port %u owner info: %s_%016"PRIX64, dev->data->port_id,
priv->my_owner.name, priv->my_owner.id);
ret = rte_eth_dev_callback_register(RTE_ETH_ALL, RTE_ETH_EVENT_NEW,
failsafe_eth_new_event_callback,
dev);
if (ret) {
ERROR("Failed to register NEW callback");
goto free_args;
}
ret = failsafe_eal_init(dev);
if (ret)
goto unregister_new_callback;
ret = fs_mutex_init(priv);
if (ret)
goto unregister_new_callback;
ret = failsafe_hotplug_alarm_install(dev);
if (ret) {
ERROR("Could not set up plug-in event detection");
goto unregister_new_callback;
}
mac = &dev->data->mac_addrs[0];
if (failsafe_mac_from_arg) {
/*
* If MAC address was provided as a parameter,
* apply to all probed slaves.
*/
FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_PROBED) {
ret = rte_eth_dev_default_mac_addr_set(PORT_ID(sdev),
mac);
if (ret) {
ERROR("Failed to set default MAC address");
goto cancel_alarm;
}
}
} else {
/*
* Use the ether_addr from first probed
* device, either preferred or fallback.
*/
FOREACH_SUBDEV(sdev, i, dev)
if (sdev->state >= DEV_PROBED) {
rte_ether_addr_copy(
&ETH(sdev)->data->mac_addrs[0], mac);
break;
}
/*
* If no device has been probed and no ether_addr
* has been provided on the command line, use a random
* valid one.
* It will be applied during future slave state syncs to
* probed slaves.
*/
if (i == priv->subs_tail)
rte_eth_random_addr(&mac->addr_bytes[0]);
}
INFO("MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
mac->addr_bytes[0], mac->addr_bytes[1],
mac->addr_bytes[2], mac->addr_bytes[3],
mac->addr_bytes[4], mac->addr_bytes[5]);
dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
PRIV(dev)->intr_handle = (struct rte_intr_handle){
.fd = -1,
.type = RTE_INTR_HANDLE_EXT,
};
rte_eth_dev_probing_finish(dev);
return 0;
cancel_alarm:
failsafe_hotplug_alarm_cancel(dev);
unregister_new_callback:
rte_eth_dev_callback_unregister(RTE_ETH_ALL, RTE_ETH_EVENT_NEW,
failsafe_eth_new_event_callback, dev);
free_args:
failsafe_args_free(dev);
free_subs:
fs_sub_device_free(dev);
free_dev:
/* mac_addrs must not be freed alone because part of dev_private */
dev->data->mac_addrs = NULL;
rte_eth_dev_release_port(dev);
return -1;
}
static int
fs_rte_eth_free(const char *name)
{
struct rte_eth_dev *dev;
int ret;
dev = rte_eth_dev_allocated(name);
if (dev == NULL)
return -ENODEV;
rte_eth_dev_callback_unregister(RTE_ETH_ALL, RTE_ETH_EVENT_NEW,
failsafe_eth_new_event_callback, dev);
ret = failsafe_eal_uninit(dev);
if (ret)
ERROR("Error while uninitializing sub-EAL");
failsafe_args_free(dev);
fs_sub_device_free(dev);
ret = pthread_mutex_destroy(&PRIV(dev)->hotplug_mutex);
if (ret)
ERROR("Error while destroying hotplug mutex");
rte_free(PRIV(dev)->mcast_addrs);
/* mac_addrs must not be freed alone because part of dev_private */
dev->data->mac_addrs = NULL;
rte_eth_dev_release_port(dev);
return ret;
}
static bool
devargs_already_listed(struct rte_devargs *devargs)
{
struct rte_devargs *list_da;
RTE_EAL_DEVARGS_FOREACH(devargs->bus->name, list_da) {
if (strcmp(list_da->name, devargs->name) == 0)
/* devargs already in the list */
return true;
}
return false;
}
static int
rte_pmd_failsafe_probe(struct rte_vdev_device *vdev)
{
const char *name;
struct rte_eth_dev *eth_dev;
struct sub_device *sdev;
struct rte_devargs devargs;
uint8_t i;
int ret;
name = rte_vdev_device_name(vdev);
INFO("Initializing " FAILSAFE_DRIVER_NAME " for %s",
name);
if (rte_eal_process_type() == RTE_PROC_SECONDARY &&
strlen(rte_vdev_device_args(vdev)) == 0) {
eth_dev = rte_eth_dev_attach_secondary(name);
if (!eth_dev) {
ERROR("Failed to probe %s", name);
return -1;
}
eth_dev->dev_ops = &failsafe_ops;
eth_dev->device = &vdev->device;
eth_dev->rx_pkt_burst = (eth_rx_burst_t)&failsafe_rx_burst;
eth_dev->tx_pkt_burst = (eth_tx_burst_t)&failsafe_tx_burst;
/*
* Failsafe will attempt to probe all of its sub-devices.
* Any failure in sub-devices is not a fatal error.
* A sub-device can be plugged later.
*/
FOREACH_SUBDEV(sdev, i, eth_dev) {
/* skip empty devargs */
if (sdev->devargs.name[0] == '\0')
continue;
/* rebuild devargs to be able to get the bus name. */
ret = rte_devargs_parse(&devargs,
sdev->devargs.name);
if (ret != 0) {
ERROR("Failed to parse devargs %s",
devargs.name);
continue;
}
if (!devargs_already_listed(&devargs)) {
ret = rte_dev_probe(devargs.name);
if (ret < 0) {
ERROR("Failed to probe devargs %s",
devargs.name);
continue;
}
}
}
rte_eth_dev_probing_finish(eth_dev);
return 0;
}
return fs_eth_dev_create(vdev);
}
static int
rte_pmd_failsafe_remove(struct rte_vdev_device *vdev)
{
const char *name;
name = rte_vdev_device_name(vdev);
INFO("Uninitializing " FAILSAFE_DRIVER_NAME " for %s", name);
return fs_rte_eth_free(name);
}
static struct rte_vdev_driver failsafe_drv = {
.probe = rte_pmd_failsafe_probe,
.remove = rte_pmd_failsafe_remove,
};
RTE_PMD_REGISTER_VDEV(net_failsafe, failsafe_drv);
RTE_PMD_REGISTER_PARAM_STRING(net_failsafe, PMD_FAILSAFE_PARAM_STRING);
RTE_LOG_REGISTER(failsafe_logtype, pmd.net.failsafe, NOTICE)