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numam-dpdk/drivers/net/mlx5/mlx5_ethdev.c
Qi Zhang c23a1a3000 eal: clean up interrupt handle 
The patch change the prototype of callback function
(rte_intr_callback_fn) by removing the unnecessary parameter.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-06 21:15:55 +02:00

1610 lines
41 KiB
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/*-
* BSD LICENSE
*
* Copyright 2015 6WIND S.A.
* Copyright 2015 Mellanox.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of 6WIND S.A. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stddef.h>
#include <assert.h>
#include <unistd.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <dirent.h>
#include <net/if.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/utsname.h>
#include <netinet/in.h>
#include <linux/ethtool.h>
#include <linux/sockios.h>
#include <linux/version.h>
#include <fcntl.h>
/* DPDK headers don't like -pedantic. */
#ifdef PEDANTIC
#pragma GCC diagnostic ignored "-Wpedantic"
#endif
#include <rte_atomic.h>
#include <rte_ethdev.h>
#include <rte_mbuf.h>
#include <rte_common.h>
#include <rte_interrupts.h>
#include <rte_alarm.h>
#include <rte_malloc.h>
#ifdef PEDANTIC
#pragma GCC diagnostic error "-Wpedantic"
#endif
#include "mlx5.h"
#include "mlx5_rxtx.h"
#include "mlx5_utils.h"
/* Add defines in case the running kernel is not the same as user headers. */
#ifndef ETHTOOL_GLINKSETTINGS
struct ethtool_link_settings {
uint32_t cmd;
uint32_t speed;
uint8_t duplex;
uint8_t port;
uint8_t phy_address;
uint8_t autoneg;
uint8_t mdio_support;
uint8_t eth_to_mdix;
uint8_t eth_tp_mdix_ctrl;
int8_t link_mode_masks_nwords;
uint32_t reserved[8];
uint32_t link_mode_masks[];
};
#define ETHTOOL_GLINKSETTINGS 0x0000004c
#define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
#define ETHTOOL_LINK_MODE_Autoneg_BIT 6
#define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
#define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
#define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
#define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
#define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
#define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
#define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
#define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
#define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
#define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
#define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
#define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
#define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
#define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
#endif
#ifndef HAVE_ETHTOOL_LINK_MODE_25G
#define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
#define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
#define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
#endif
#ifndef HAVE_ETHTOOL_LINK_MODE_50G
#define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
#define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
#endif
#ifndef HAVE_ETHTOOL_LINK_MODE_100G
#define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
#define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
#define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
#define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
#endif
/**
* Return private structure associated with an Ethernet device.
*
* @param dev
* Pointer to Ethernet device structure.
*
* @return
* Pointer to private structure.
*/
struct priv *
mlx5_get_priv(struct rte_eth_dev *dev)
{
struct mlx5_secondary_data *sd;
if (!mlx5_is_secondary())
return dev->data->dev_private;
sd = &mlx5_secondary_data[dev->data->port_id];
return sd->data.dev_private;
}
/**
* Check if running as a secondary process.
*
* @return
* Nonzero if running as a secondary process.
*/
inline int
mlx5_is_secondary(void)
{
return rte_eal_process_type() != RTE_PROC_PRIMARY;
}
/**
* Get interface name from private structure.
*
* @param[in] priv
* Pointer to private structure.
* @param[out] ifname
* Interface name output buffer.
*
* @return
* 0 on success, -1 on failure and errno is set.
*/
int
priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE])
{
DIR *dir;
struct dirent *dent;
unsigned int dev_type = 0;
unsigned int dev_port_prev = ~0u;
char match[IF_NAMESIZE] = "";
{
MKSTR(path, "%s/device/net", priv->ctx->device->ibdev_path);
dir = opendir(path);
if (dir == NULL)
return -1;
}
while ((dent = readdir(dir)) != NULL) {
char *name = dent->d_name;
FILE *file;
unsigned int dev_port;
int r;
if ((name[0] == '.') &&
((name[1] == '\0') ||
((name[1] == '.') && (name[2] == '\0'))))
continue;
MKSTR(path, "%s/device/net/%s/%s",
priv->ctx->device->ibdev_path, name,
(dev_type ? "dev_id" : "dev_port"));
file = fopen(path, "rb");
if (file == NULL) {
if (errno != ENOENT)
continue;
/*
* Switch to dev_id when dev_port does not exist as
* is the case with Linux kernel versions < 3.15.
*/
try_dev_id:
match[0] = '\0';
if (dev_type)
break;
dev_type = 1;
dev_port_prev = ~0u;
rewinddir(dir);
continue;
}
r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
fclose(file);
if (r != 1)
continue;
/*
* Switch to dev_id when dev_port returns the same value for
* all ports. May happen when using a MOFED release older than
* 3.0 with a Linux kernel >= 3.15.
*/
if (dev_port == dev_port_prev)
goto try_dev_id;
dev_port_prev = dev_port;
if (dev_port == (priv->port - 1u))
snprintf(match, sizeof(match), "%s", name);
}
closedir(dir);
if (match[0] == '\0')
return -1;
strncpy(*ifname, match, sizeof(*ifname));
return 0;
}
/**
* Check if the counter is located on ib counters file.
*
* @param[in] cntr
* Counter name.
*
* @return
* 1 if counter is located on ib counters file , 0 otherwise.
*/
int
priv_is_ib_cntr(const char *cntr)
{
if (!strcmp(cntr, "out_of_buffer"))
return 1;
return 0;
}
/**
* Read from sysfs entry.
*
* @param[in] priv
* Pointer to private structure.
* @param[in] entry
* Entry name relative to sysfs path.
* @param[out] buf
* Data output buffer.
* @param size
* Buffer size.
*
* @return
* 0 on success, -1 on failure and errno is set.
*/
static int
priv_sysfs_read(const struct priv *priv, const char *entry,
char *buf, size_t size)
{
char ifname[IF_NAMESIZE];
FILE *file;
int ret;
int err;
if (priv_get_ifname(priv, &ifname))
return -1;
if (priv_is_ib_cntr(entry)) {
MKSTR(path, "%s/ports/1/hw_counters/%s",
priv->ctx->device->ibdev_path, entry);
file = fopen(path, "rb");
} else {
MKSTR(path, "%s/device/net/%s/%s",
priv->ctx->device->ibdev_path, ifname, entry);
file = fopen(path, "rb");
}
if (file == NULL)
return -1;
ret = fread(buf, 1, size, file);
err = errno;
if (((size_t)ret < size) && (ferror(file)))
ret = -1;
else
ret = size;
fclose(file);
errno = err;
return ret;
}
/**
* Write to sysfs entry.
*
* @param[in] priv
* Pointer to private structure.
* @param[in] entry
* Entry name relative to sysfs path.
* @param[in] buf
* Data buffer.
* @param size
* Buffer size.
*
* @return
* 0 on success, -1 on failure and errno is set.
*/
static int
priv_sysfs_write(const struct priv *priv, const char *entry,
char *buf, size_t size)
{
char ifname[IF_NAMESIZE];
FILE *file;
int ret;
int err;
if (priv_get_ifname(priv, &ifname))
return -1;
MKSTR(path, "%s/device/net/%s/%s", priv->ctx->device->ibdev_path,
ifname, entry);
file = fopen(path, "wb");
if (file == NULL)
return -1;
ret = fwrite(buf, 1, size, file);
err = errno;
if (((size_t)ret < size) || (ferror(file)))
ret = -1;
else
ret = size;
fclose(file);
errno = err;
return ret;
}
/**
* Get unsigned long sysfs property.
*
* @param priv
* Pointer to private structure.
* @param[in] name
* Entry name relative to sysfs path.
* @param[out] value
* Value output buffer.
*
* @return
* 0 on success, -1 on failure and errno is set.
*/
static int
priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value)
{
int ret;
unsigned long value_ret;
char value_str[32];
ret = priv_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1));
if (ret == -1) {
DEBUG("cannot read %s value from sysfs: %s",
name, strerror(errno));
return -1;
}
value_str[ret] = '\0';
errno = 0;
value_ret = strtoul(value_str, NULL, 0);
if (errno) {
DEBUG("invalid %s value `%s': %s", name, value_str,
strerror(errno));
return -1;
}
*value = value_ret;
return 0;
}
/**
* Set unsigned long sysfs property.
*
* @param priv
* Pointer to private structure.
* @param[in] name
* Entry name relative to sysfs path.
* @param value
* Value to set.
*
* @return
* 0 on success, -1 on failure and errno is set.
*/
static int
priv_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value)
{
int ret;
MKSTR(value_str, "%lu", value);
ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1));
if (ret == -1) {
DEBUG("cannot write %s `%s' (%lu) to sysfs: %s",
name, value_str, value, strerror(errno));
return -1;
}
return 0;
}
/**
* Perform ifreq ioctl() on associated Ethernet device.
*
* @param[in] priv
* Pointer to private structure.
* @param req
* Request number to pass to ioctl().
* @param[out] ifr
* Interface request structure output buffer.
*
* @return
* 0 on success, -1 on failure and errno is set.
*/
int
priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr)
{
int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
int ret = -1;
if (sock == -1)
return ret;
if (priv_get_ifname(priv, &ifr->ifr_name) == 0)
ret = ioctl(sock, req, ifr);
close(sock);
return ret;
}
/**
* Return the number of active VFs for the current device.
*
* @param[in] priv
* Pointer to private structure.
* @param[out] num_vfs
* Number of active VFs.
*
* @return
* 0 on success, -1 on failure and errno is set.
*/
int
priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs)
{
/* The sysfs entry name depends on the operating system. */
const char **name = (const char *[]){
"device/sriov_numvfs",
"device/mlx5_num_vfs",
NULL,
};
int ret;
do {
unsigned long ulong_num_vfs;
ret = priv_get_sysfs_ulong(priv, *name, &ulong_num_vfs);
if (!ret)
*num_vfs = ulong_num_vfs;
} while (*(++name) && ret);
return ret;
}
/**
* Get device MTU.
*
* @param priv
* Pointer to private structure.
* @param[out] mtu
* MTU value output buffer.
*
* @return
* 0 on success, -1 on failure and errno is set.
*/
int
priv_get_mtu(struct priv *priv, uint16_t *mtu)
{
unsigned long ulong_mtu;
if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1)
return -1;
*mtu = ulong_mtu;
return 0;
}
/**
* Read device counter from sysfs.
*
* @param priv
* Pointer to private structure.
* @param name
* Counter name.
* @param[out] cntr
* Counter output buffer.
*
* @return
* 0 on success, -1 on failure and errno is set.
*/
int
priv_get_cntr_sysfs(struct priv *priv, const char *name, uint64_t *cntr)
{
unsigned long ulong_ctr;
if (priv_get_sysfs_ulong(priv, name, &ulong_ctr) == -1)
return -1;
*cntr = ulong_ctr;
return 0;
}
/**
* Set device MTU.
*
* @param priv
* Pointer to private structure.
* @param mtu
* MTU value to set.
*
* @return
* 0 on success, -1 on failure and errno is set.
*/
static int
priv_set_mtu(struct priv *priv, uint16_t mtu)
{
uint16_t new_mtu;
if (priv_set_sysfs_ulong(priv, "mtu", mtu) ||
priv_get_mtu(priv, &new_mtu))
return -1;
if (new_mtu == mtu)
return 0;
errno = EINVAL;
return -1;
}
/**
* Set device flags.
*
* @param priv
* Pointer to private structure.
* @param keep
* Bitmask for flags that must remain untouched.
* @param flags
* Bitmask for flags to modify.
*
* @return
* 0 on success, -1 on failure and errno is set.
*/
int
priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags)
{
unsigned long tmp;
if (priv_get_sysfs_ulong(priv, "flags", &tmp) == -1)
return -1;
tmp &= keep;
tmp |= (flags & (~keep));
return priv_set_sysfs_ulong(priv, "flags", tmp);
}
/**
* Ethernet device configuration.
*
* Prepare the driver for a given number of TX and RX queues.
*
* @param dev
* Pointer to Ethernet device structure.
*
* @return
* 0 on success, errno value on failure.
*/
static int
dev_configure(struct rte_eth_dev *dev)
{
struct priv *priv = dev->data->dev_private;
unsigned int rxqs_n = dev->data->nb_rx_queues;
unsigned int txqs_n = dev->data->nb_tx_queues;
unsigned int i;
unsigned int j;
unsigned int reta_idx_n;
priv->rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
priv->rxqs = (void *)dev->data->rx_queues;
priv->txqs = (void *)dev->data->tx_queues;
if (txqs_n != priv->txqs_n) {
INFO("%p: TX queues number update: %u -> %u",
(void *)dev, priv->txqs_n, txqs_n);
priv->txqs_n = txqs_n;
}
if (rxqs_n > priv->ind_table_max_size) {
ERROR("cannot handle this many RX queues (%u)", rxqs_n);
return EINVAL;
}
if (rxqs_n == priv->rxqs_n)
return 0;
INFO("%p: RX queues number update: %u -> %u",
(void *)dev, priv->rxqs_n, rxqs_n);
priv->rxqs_n = rxqs_n;
/* If the requested number of RX queues is not a power of two, use the
* maximum indirection table size for better balancing.
* The result is always rounded to the next power of two. */
reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
priv->ind_table_max_size :
rxqs_n));
if (priv_rss_reta_index_resize(priv, reta_idx_n))
return ENOMEM;
/* When the number of RX queues is not a power of two, the remaining
* table entries are padded with reused WQs and hashes are not spread
* uniformly. */
for (i = 0, j = 0; (i != reta_idx_n); ++i) {
(*priv->reta_idx)[i] = j;
if (++j == rxqs_n)
j = 0;
}
return 0;
}
/**
* DPDK callback for Ethernet device configuration.
*
* @param dev
* Pointer to Ethernet device structure.
*
* @return
* 0 on success, negative errno value on failure.
*/
int
mlx5_dev_configure(struct rte_eth_dev *dev)
{
struct priv *priv = dev->data->dev_private;
int ret;
if (mlx5_is_secondary())
return -E_RTE_SECONDARY;
priv_lock(priv);
ret = dev_configure(dev);
assert(ret >= 0);
priv_unlock(priv);
return -ret;
}
/**
* DPDK callback to get information about the device.
*
* @param dev
* Pointer to Ethernet device structure.
* @param[out] info
* Info structure output buffer.
*/
void
mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
{
struct priv *priv = mlx5_get_priv(dev);
unsigned int max;
char ifname[IF_NAMESIZE];
info->pci_dev = RTE_DEV_TO_PCI(dev->device);
priv_lock(priv);
/* FIXME: we should ask the device for these values. */
info->min_rx_bufsize = 32;
info->max_rx_pktlen = 65536;
/*
* Since we need one CQ per QP, the limit is the minimum number
* between the two values.
*/
max = ((priv->device_attr.max_cq > priv->device_attr.max_qp) ?
priv->device_attr.max_qp : priv->device_attr.max_cq);
/* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
if (max >= 65535)
max = 65535;
info->max_rx_queues = max;
info->max_tx_queues = max;
info->max_mac_addrs = RTE_DIM(priv->mac);
info->rx_offload_capa =
(priv->hw_csum ?
(DEV_RX_OFFLOAD_IPV4_CKSUM |
DEV_RX_OFFLOAD_UDP_CKSUM |
DEV_RX_OFFLOAD_TCP_CKSUM) :
0) |
(priv->hw_vlan_strip ? DEV_RX_OFFLOAD_VLAN_STRIP : 0);
if (!priv->mps)
info->tx_offload_capa = DEV_TX_OFFLOAD_VLAN_INSERT;
if (priv->hw_csum)
info->tx_offload_capa |=
(DEV_TX_OFFLOAD_IPV4_CKSUM |
DEV_TX_OFFLOAD_UDP_CKSUM |
DEV_TX_OFFLOAD_TCP_CKSUM);
if (priv->tso)
info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
if (priv->tunnel_en)
info->tx_offload_capa |= (DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM |
DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
DEV_TX_OFFLOAD_GRE_TNL_TSO);
if (priv_get_ifname(priv, &ifname) == 0)
info->if_index = if_nametoindex(ifname);
info->reta_size = priv->reta_idx_n ?
priv->reta_idx_n : priv->ind_table_max_size;
info->hash_key_size = ((*priv->rss_conf) ?
(*priv->rss_conf)[0]->rss_key_len :
0);
info->speed_capa = priv->link_speed_capa;
priv_unlock(priv);
}
const uint32_t *
mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
{
static const uint32_t ptypes[] = {
/* refers to rxq_cq_to_pkt_type() */
RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
RTE_PTYPE_UNKNOWN
};
if (dev->rx_pkt_burst == mlx5_rx_burst)
return ptypes;
return NULL;
}
/**
* DPDK callback to retrieve physical link information.
*
* @param dev
* Pointer to Ethernet device structure.
* @param wait_to_complete
* Wait for request completion (ignored).
*/
static int
mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete)
{
struct priv *priv = mlx5_get_priv(dev);
struct ethtool_cmd edata = {
.cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
};
struct ifreq ifr;
struct rte_eth_link dev_link;
int link_speed = 0;
/* priv_lock() is not taken to allow concurrent calls. */
(void)wait_to_complete;
if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
return -1;
}
memset(&dev_link, 0, sizeof(dev_link));
dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
(ifr.ifr_flags & IFF_RUNNING));
ifr.ifr_data = (void *)&edata;
if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
strerror(errno));
return -1;
}
link_speed = ethtool_cmd_speed(&edata);
if (link_speed == -1)
dev_link.link_speed = 0;
else
dev_link.link_speed = link_speed;
priv->link_speed_capa = 0;
if (edata.supported & SUPPORTED_Autoneg)
priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
if (edata.supported & (SUPPORTED_1000baseT_Full |
SUPPORTED_1000baseKX_Full))
priv->link_speed_capa |= ETH_LINK_SPEED_1G;
if (edata.supported & SUPPORTED_10000baseKR_Full)
priv->link_speed_capa |= ETH_LINK_SPEED_10G;
if (edata.supported & (SUPPORTED_40000baseKR4_Full |
SUPPORTED_40000baseCR4_Full |
SUPPORTED_40000baseSR4_Full |
SUPPORTED_40000baseLR4_Full))
priv->link_speed_capa |= ETH_LINK_SPEED_40G;
dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
ETH_LINK_SPEED_FIXED);
if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
/* Link status changed. */
dev->data->dev_link = dev_link;
return 0;
}
/* Link status is still the same. */
return -1;
}
/**
* Retrieve physical link information (unlocked version using new ioctl).
*
* @param dev
* Pointer to Ethernet device structure.
* @param wait_to_complete
* Wait for request completion (ignored).
*/
static int
mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete)
{
struct priv *priv = mlx5_get_priv(dev);
struct ethtool_link_settings edata = {
.cmd = ETHTOOL_GLINKSETTINGS,
};
struct ifreq ifr;
struct rte_eth_link dev_link;
uint64_t sc;
(void)wait_to_complete;
if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
return -1;
}
memset(&dev_link, 0, sizeof(dev_link));
dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
(ifr.ifr_flags & IFF_RUNNING));
ifr.ifr_data = (void *)&edata;
if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
strerror(errno));
return -1;
}
dev_link.link_speed = edata.speed;
sc = edata.link_mode_masks[0] |
((uint64_t)edata.link_mode_masks[1] << 32);
priv->link_speed_capa = 0;
if (sc & ETHTOOL_LINK_MODE_Autoneg_BIT)
priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
if (sc & (ETHTOOL_LINK_MODE_1000baseT_Full_BIT |
ETHTOOL_LINK_MODE_1000baseKX_Full_BIT))
priv->link_speed_capa |= ETH_LINK_SPEED_1G;
if (sc & (ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT |
ETHTOOL_LINK_MODE_10000baseKR_Full_BIT |
ETHTOOL_LINK_MODE_10000baseR_FEC_BIT))
priv->link_speed_capa |= ETH_LINK_SPEED_10G;
if (sc & (ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT |
ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT))
priv->link_speed_capa |= ETH_LINK_SPEED_20G;
if (sc & (ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT |
ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT |
ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT |
ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT))
priv->link_speed_capa |= ETH_LINK_SPEED_40G;
if (sc & (ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT |
ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT |
ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT |
ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT))
priv->link_speed_capa |= ETH_LINK_SPEED_56G;
if (sc & (ETHTOOL_LINK_MODE_25000baseCR_Full_BIT |
ETHTOOL_LINK_MODE_25000baseKR_Full_BIT |
ETHTOOL_LINK_MODE_25000baseSR_Full_BIT))
priv->link_speed_capa |= ETH_LINK_SPEED_25G;
if (sc & (ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT |
ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT))
priv->link_speed_capa |= ETH_LINK_SPEED_50G;
if (sc & (ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT |
ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT |
ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT |
ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT))
priv->link_speed_capa |= ETH_LINK_SPEED_100G;
dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
ETH_LINK_SPEED_FIXED);
if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
/* Link status changed. */
dev->data->dev_link = dev_link;
return 0;
}
/* Link status is still the same. */
return -1;
}
/**
* DPDK callback to retrieve physical link information.
*
* @param dev
* Pointer to Ethernet device structure.
* @param wait_to_complete
* Wait for request completion (ignored).
*/
int
mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
{
struct utsname utsname;
int ver[3];
if (uname(&utsname) == -1 ||
sscanf(utsname.release, "%d.%d.%d",
&ver[0], &ver[1], &ver[2]) != 3 ||
KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0))
return mlx5_link_update_unlocked_gset(dev, wait_to_complete);
return mlx5_link_update_unlocked_gs(dev, wait_to_complete);
}
/**
* DPDK callback to change the MTU.
*
* Setting the MTU affects hardware MRU (packets larger than the MTU cannot be
* received). Use this as a hint to enable/disable scattered packets support
* and improve performance when not needed.
* Since failure is not an option, reconfiguring queues on the fly is not
* recommended.
*
* @param dev
* Pointer to Ethernet device structure.
* @param in_mtu
* New MTU.
*
* @return
* 0 on success, negative errno value on failure.
*/
int
mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
{
struct priv *priv = dev->data->dev_private;
int ret = 0;
unsigned int i;
uint16_t (*rx_func)(void *, struct rte_mbuf **, uint16_t) =
mlx5_rx_burst;
unsigned int max_frame_len;
int rehash;
int restart = priv->started;
if (mlx5_is_secondary())
return -E_RTE_SECONDARY;
priv_lock(priv);
/* Set kernel interface MTU first. */
if (priv_set_mtu(priv, mtu)) {
ret = errno;
WARN("cannot set port %u MTU to %u: %s", priv->port, mtu,
strerror(ret));
goto out;
} else
DEBUG("adapter port %u MTU set to %u", priv->port, mtu);
/* Temporarily replace RX handler with a fake one, assuming it has not
* been copied elsewhere. */
dev->rx_pkt_burst = removed_rx_burst;
/* Make sure everyone has left mlx5_rx_burst() and uses
* removed_rx_burst() instead. */
rte_wmb();
usleep(1000);
/* MTU does not include header and CRC. */
max_frame_len = ETHER_HDR_LEN + mtu + ETHER_CRC_LEN;
/* Check if at least one queue is going to need a SGE update. */
for (i = 0; i != priv->rxqs_n; ++i) {
struct rxq *rxq = (*priv->rxqs)[i];
unsigned int mb_len;
unsigned int size = RTE_PKTMBUF_HEADROOM + max_frame_len;
unsigned int sges_n;
if (rxq == NULL)
continue;
mb_len = rte_pktmbuf_data_room_size(rxq->mp);
assert(mb_len >= RTE_PKTMBUF_HEADROOM);
/*
* Determine the number of SGEs needed for a full packet
* and round it to the next power of two.
*/
sges_n = log2above((size / mb_len) + !!(size % mb_len));
if (sges_n != rxq->sges_n)
break;
}
/*
* If all queues have the right number of SGEs, a simple rehash
* of their buffers is enough, otherwise SGE information can only
* be updated in a queue by recreating it. All resources that depend
* on queues (flows, indirection tables) must be recreated as well in
* that case.
*/
rehash = (i == priv->rxqs_n);
if (!rehash) {
/* Clean up everything as with mlx5_dev_stop(). */
priv_special_flow_disable_all(priv);
priv_mac_addrs_disable(priv);
priv_destroy_hash_rxqs(priv);
priv_fdir_disable(priv);
priv_dev_interrupt_handler_uninstall(priv, dev);
}
recover:
/* Reconfigure each RX queue. */
for (i = 0; (i != priv->rxqs_n); ++i) {
struct rxq *rxq = (*priv->rxqs)[i];
struct rxq_ctrl *rxq_ctrl =
container_of(rxq, struct rxq_ctrl, rxq);
unsigned int mb_len;
unsigned int tmp;
if (rxq == NULL)
continue;
mb_len = rte_pktmbuf_data_room_size(rxq->mp);
assert(mb_len >= RTE_PKTMBUF_HEADROOM);
/* Provide new values to rxq_setup(). */
dev->data->dev_conf.rxmode.jumbo_frame =
(max_frame_len > ETHER_MAX_LEN);
dev->data->dev_conf.rxmode.max_rx_pkt_len = max_frame_len;
if (rehash)
ret = rxq_rehash(dev, rxq_ctrl);
else
ret = rxq_ctrl_setup(dev, rxq_ctrl, 1 << rxq->elts_n,
rxq_ctrl->socket, NULL, rxq->mp);
if (!ret)
continue;
/* Attempt to roll back in case of error. */
tmp = (mb_len << rxq->sges_n) - RTE_PKTMBUF_HEADROOM;
if (max_frame_len != tmp) {
max_frame_len = tmp;
goto recover;
}
/* Double fault, disable RX. */
break;
}
/*
* Use a safe RX burst function in case of error, otherwise mimic
* mlx5_dev_start().
*/
if (ret) {
ERROR("unable to reconfigure RX queues, RX disabled");
rx_func = removed_rx_burst;
} else if (restart &&
!rehash &&
!priv_create_hash_rxqs(priv) &&
!priv_rehash_flows(priv)) {
if (dev->data->dev_conf.fdir_conf.mode == RTE_FDIR_MODE_NONE)
priv_fdir_enable(priv);
priv_dev_interrupt_handler_install(priv, dev);
}
priv->mtu = mtu;
/* Burst functions can now be called again. */
rte_wmb();
dev->rx_pkt_burst = rx_func;
out:
priv_unlock(priv);
assert(ret >= 0);
return -ret;
}
/**
* DPDK callback to get flow control status.
*
* @param dev
* Pointer to Ethernet device structure.
* @param[out] fc_conf
* Flow control output buffer.
*
* @return
* 0 on success, negative errno value on failure.
*/
int
mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
{
struct priv *priv = dev->data->dev_private;
struct ifreq ifr;
struct ethtool_pauseparam ethpause = {
.cmd = ETHTOOL_GPAUSEPARAM
};
int ret;
if (mlx5_is_secondary())
return -E_RTE_SECONDARY;
ifr.ifr_data = (void *)&ethpause;
priv_lock(priv);
if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
ret = errno;
WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
" failed: %s",
strerror(ret));
goto out;
}
fc_conf->autoneg = ethpause.autoneg;
if (ethpause.rx_pause && ethpause.tx_pause)
fc_conf->mode = RTE_FC_FULL;
else if (ethpause.rx_pause)
fc_conf->mode = RTE_FC_RX_PAUSE;
else if (ethpause.tx_pause)
fc_conf->mode = RTE_FC_TX_PAUSE;
else
fc_conf->mode = RTE_FC_NONE;
ret = 0;
out:
priv_unlock(priv);
assert(ret >= 0);
return -ret;
}
/**
* DPDK callback to modify flow control parameters.
*
* @param dev
* Pointer to Ethernet device structure.
* @param[in] fc_conf
* Flow control parameters.
*
* @return
* 0 on success, negative errno value on failure.
*/
int
mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
{
struct priv *priv = dev->data->dev_private;
struct ifreq ifr;
struct ethtool_pauseparam ethpause = {
.cmd = ETHTOOL_SPAUSEPARAM
};
int ret;
if (mlx5_is_secondary())
return -E_RTE_SECONDARY;
ifr.ifr_data = (void *)&ethpause;
ethpause.autoneg = fc_conf->autoneg;
if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
(fc_conf->mode & RTE_FC_RX_PAUSE))
ethpause.rx_pause = 1;
else
ethpause.rx_pause = 0;
if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
(fc_conf->mode & RTE_FC_TX_PAUSE))
ethpause.tx_pause = 1;
else
ethpause.tx_pause = 0;
priv_lock(priv);
if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
ret = errno;
WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
" failed: %s",
strerror(ret));
goto out;
}
ret = 0;
out:
priv_unlock(priv);
assert(ret >= 0);
return -ret;
}
/**
* Get PCI information from struct ibv_device.
*
* @param device
* Pointer to Ethernet device structure.
* @param[out] pci_addr
* PCI bus address output buffer.
*
* @return
* 0 on success, -1 on failure and errno is set.
*/
int
mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
struct rte_pci_addr *pci_addr)
{
FILE *file;
char line[32];
MKSTR(path, "%s/device/uevent", device->ibdev_path);
file = fopen(path, "rb");
if (file == NULL)
return -1;
while (fgets(line, sizeof(line), file) == line) {
size_t len = strlen(line);
int ret;
/* Truncate long lines. */
if (len == (sizeof(line) - 1))
while (line[(len - 1)] != '\n') {
ret = fgetc(file);
if (ret == EOF)
break;
line[(len - 1)] = ret;
}
/* Extract information. */
if (sscanf(line,
"PCI_SLOT_NAME="
"%" SCNx16 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
&pci_addr->domain,
&pci_addr->bus,
&pci_addr->devid,
&pci_addr->function) == 4) {
ret = 0;
break;
}
}
fclose(file);
return 0;
}
/**
* Link status handler.
*
* @param priv
* Pointer to private structure.
* @param dev
* Pointer to the rte_eth_dev structure.
*
* @return
* Nonzero if the callback process can be called immediately.
*/
static int
priv_dev_link_status_handler(struct priv *priv, struct rte_eth_dev *dev)
{
struct ibv_async_event event;
struct rte_eth_link *link = &dev->data->dev_link;
int ret = 0;
/* Read all message and acknowledge them. */
for (;;) {
if (ibv_get_async_event(priv->ctx, &event))
break;
if (event.event_type != IBV_EVENT_PORT_ACTIVE &&
event.event_type != IBV_EVENT_PORT_ERR)
DEBUG("event type %d on port %d not handled",
event.event_type, event.element.port_num);
ibv_ack_async_event(&event);
}
mlx5_link_update(dev, 0);
if (((link->link_speed == 0) && link->link_status) ||
((link->link_speed != 0) && !link->link_status)) {
if (!priv->pending_alarm) {
/* Inconsistent status, check again later. */
priv->pending_alarm = 1;
rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
mlx5_dev_link_status_handler,
dev);
}
} else {
ret = 1;
}
return ret;
}
/**
* Handle delayed link status event.
*
* @param arg
* Registered argument.
*/
void
mlx5_dev_link_status_handler(void *arg)
{
struct rte_eth_dev *dev = arg;
struct priv *priv = dev->data->dev_private;
int ret;
priv_lock(priv);
assert(priv->pending_alarm == 1);
priv->pending_alarm = 0;
ret = priv_dev_link_status_handler(priv, dev);
priv_unlock(priv);
if (ret)
_rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
}
/**
* Handle interrupts from the NIC.
*
* @param[in] intr_handle
* Interrupt handler.
* @param cb_arg
* Callback argument.
*/
void
mlx5_dev_interrupt_handler(void *cb_arg)
{
struct rte_eth_dev *dev = cb_arg;
struct priv *priv = dev->data->dev_private;
int ret;
priv_lock(priv);
ret = priv_dev_link_status_handler(priv, dev);
priv_unlock(priv);
if (ret)
_rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
}
/**
* Uninstall interrupt handler.
*
* @param priv
* Pointer to private structure.
* @param dev
* Pointer to the rte_eth_dev structure.
*/
void
priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
{
if (!dev->data->dev_conf.intr_conf.lsc)
return;
rte_intr_callback_unregister(&priv->intr_handle,
mlx5_dev_interrupt_handler,
dev);
if (priv->pending_alarm)
rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
priv->pending_alarm = 0;
priv->intr_handle.fd = 0;
priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
}
/**
* Install interrupt handler.
*
* @param priv
* Pointer to private structure.
* @param dev
* Pointer to the rte_eth_dev structure.
*/
void
priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev)
{
int rc, flags;
if (!dev->data->dev_conf.intr_conf.lsc)
return;
assert(priv->ctx->async_fd > 0);
flags = fcntl(priv->ctx->async_fd, F_GETFL);
rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
if (rc < 0) {
INFO("failed to change file descriptor async event queue");
dev->data->dev_conf.intr_conf.lsc = 0;
} else {
priv->intr_handle.fd = priv->ctx->async_fd;
priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
rte_intr_callback_register(&priv->intr_handle,
mlx5_dev_interrupt_handler,
dev);
}
}
/**
* Change the link state (UP / DOWN).
*
* @param priv
* Pointer to Ethernet device structure.
* @param up
* Nonzero for link up, otherwise link down.
*
* @return
* 0 on success, errno value on failure.
*/
static int
priv_set_link(struct priv *priv, int up)
{
struct rte_eth_dev *dev = priv->dev;
int err;
if (up) {
err = priv_set_flags(priv, ~IFF_UP, IFF_UP);
if (err)
return err;
priv_select_tx_function(priv);
priv_select_rx_function(priv);
} else {
err = priv_set_flags(priv, ~IFF_UP, ~IFF_UP);
if (err)
return err;
dev->rx_pkt_burst = removed_rx_burst;
dev->tx_pkt_burst = removed_tx_burst;
}
return 0;
}
/**
* DPDK callback to bring the link DOWN.
*
* @param dev
* Pointer to Ethernet device structure.
*
* @return
* 0 on success, errno value on failure.
*/
int
mlx5_set_link_down(struct rte_eth_dev *dev)
{
struct priv *priv = dev->data->dev_private;
int err;
priv_lock(priv);
err = priv_set_link(priv, 0);
priv_unlock(priv);
return err;
}
/**
* DPDK callback to bring the link UP.
*
* @param dev
* Pointer to Ethernet device structure.
*
* @return
* 0 on success, errno value on failure.
*/
int
mlx5_set_link_up(struct rte_eth_dev *dev)
{
struct priv *priv = dev->data->dev_private;
int err;
priv_lock(priv);
err = priv_set_link(priv, 1);
priv_unlock(priv);
return err;
}
/**
* Configure secondary process queues from a private data pointer (primary
* or secondary) and update burst callbacks. Can take place only once.
*
* All queues must have been previously created by the primary process to
* avoid undefined behavior.
*
* @param priv
* Private data pointer from either primary or secondary process.
*
* @return
* Private data pointer from secondary process, NULL in case of error.
*/
struct priv *
mlx5_secondary_data_setup(struct priv *priv)
{
unsigned int port_id = 0;
struct mlx5_secondary_data *sd;
void **tx_queues;
void **rx_queues;
unsigned int nb_tx_queues;
unsigned int nb_rx_queues;
unsigned int i;
/* priv must be valid at this point. */
assert(priv != NULL);
/* priv->dev must also be valid but may point to local memory from
* another process, possibly with the same address and must not
* be dereferenced yet. */
assert(priv->dev != NULL);
/* Determine port ID by finding out where priv comes from. */
while (1) {
sd = &mlx5_secondary_data[port_id];
rte_spinlock_lock(&sd->lock);
/* Primary process? */
if (sd->primary_priv == priv)
break;
/* Secondary process? */
if (sd->data.dev_private == priv)
break;
rte_spinlock_unlock(&sd->lock);
if (++port_id == RTE_DIM(mlx5_secondary_data))
port_id = 0;
}
/* Switch to secondary private structure. If private data has already
* been updated by another thread, there is nothing else to do. */
priv = sd->data.dev_private;
if (priv->dev->data == &sd->data)
goto end;
/* Sanity checks. Secondary private structure is supposed to point
* to local eth_dev, itself still pointing to the shared device data
* structure allocated by the primary process. */
assert(sd->shared_dev_data != &sd->data);
assert(sd->data.nb_tx_queues == 0);
assert(sd->data.tx_queues == NULL);
assert(sd->data.nb_rx_queues == 0);
assert(sd->data.rx_queues == NULL);
assert(priv != sd->primary_priv);
assert(priv->dev->data == sd->shared_dev_data);
assert(priv->txqs_n == 0);
assert(priv->txqs == NULL);
assert(priv->rxqs_n == 0);
assert(priv->rxqs == NULL);
nb_tx_queues = sd->shared_dev_data->nb_tx_queues;
nb_rx_queues = sd->shared_dev_data->nb_rx_queues;
/* Allocate local storage for queues. */
tx_queues = rte_zmalloc("secondary ethdev->tx_queues",
sizeof(sd->data.tx_queues[0]) * nb_tx_queues,
RTE_CACHE_LINE_SIZE);
rx_queues = rte_zmalloc("secondary ethdev->rx_queues",
sizeof(sd->data.rx_queues[0]) * nb_rx_queues,
RTE_CACHE_LINE_SIZE);
if (tx_queues == NULL || rx_queues == NULL)
goto error;
/* Lock to prevent control operations during setup. */
priv_lock(priv);
/* TX queues. */
for (i = 0; i != nb_tx_queues; ++i) {
struct txq *primary_txq = (*sd->primary_priv->txqs)[i];
struct txq_ctrl *primary_txq_ctrl;
struct txq_ctrl *txq_ctrl;
if (primary_txq == NULL)
continue;
primary_txq_ctrl = container_of(primary_txq,
struct txq_ctrl, txq);
txq_ctrl = rte_calloc_socket("TXQ", 1, sizeof(*txq_ctrl) +
(1 << primary_txq->elts_n) *
sizeof(struct rte_mbuf *), 0,
primary_txq_ctrl->socket);
if (txq_ctrl != NULL) {
if (txq_ctrl_setup(priv->dev,
txq_ctrl,
1 << primary_txq->elts_n,
primary_txq_ctrl->socket,
NULL) == 0) {
txq_ctrl->txq.stats.idx =
primary_txq->stats.idx;
tx_queues[i] = &txq_ctrl->txq;
continue;
}
rte_free(txq_ctrl);
}
while (i) {
txq_ctrl = tx_queues[--i];
txq_cleanup(txq_ctrl);
rte_free(txq_ctrl);
}
goto error;
}
/* RX queues. */
for (i = 0; i != nb_rx_queues; ++i) {
struct rxq_ctrl *primary_rxq =
container_of((*sd->primary_priv->rxqs)[i],
struct rxq_ctrl, rxq);
if (primary_rxq == NULL)
continue;
/* Not supported yet. */
rx_queues[i] = NULL;
}
/* Update everything. */
priv->txqs = (void *)tx_queues;
priv->txqs_n = nb_tx_queues;
priv->rxqs = (void *)rx_queues;
priv->rxqs_n = nb_rx_queues;
sd->data.rx_queues = rx_queues;
sd->data.tx_queues = tx_queues;
sd->data.nb_rx_queues = nb_rx_queues;
sd->data.nb_tx_queues = nb_tx_queues;
sd->data.dev_link = sd->shared_dev_data->dev_link;
sd->data.mtu = sd->shared_dev_data->mtu;
memcpy(sd->data.rx_queue_state, sd->shared_dev_data->rx_queue_state,
sizeof(sd->data.rx_queue_state));
memcpy(sd->data.tx_queue_state, sd->shared_dev_data->tx_queue_state,
sizeof(sd->data.tx_queue_state));
sd->data.dev_flags = sd->shared_dev_data->dev_flags;
/* Use local data from now on. */
rte_mb();
priv->dev->data = &sd->data;
rte_mb();
priv_select_tx_function(priv);
priv_select_rx_function(priv);
priv_unlock(priv);
end:
/* More sanity checks. */
assert(priv->dev->data == &sd->data);
rte_spinlock_unlock(&sd->lock);
return priv;
error:
priv_unlock(priv);
rte_free(tx_queues);
rte_free(rx_queues);
rte_spinlock_unlock(&sd->lock);
return NULL;
}
/**
* Configure the TX function to use.
*
* @param priv
* Pointer to private structure.
*/
void
priv_select_tx_function(struct priv *priv)
{
priv->dev->tx_pkt_burst = mlx5_tx_burst;
/* Select appropriate TX function. */
if (priv->mps == MLX5_MPW_ENHANCED) {
priv->dev->tx_pkt_burst =
mlx5_tx_burst_empw;
DEBUG("selected Enhanced MPW TX function");
} else if (priv->mps && priv->txq_inline) {
priv->dev->tx_pkt_burst = mlx5_tx_burst_mpw_inline;
DEBUG("selected MPW inline TX function");
} else if (priv->mps) {
priv->dev->tx_pkt_burst = mlx5_tx_burst_mpw;
DEBUG("selected MPW TX function");
}
}
/**
* Configure the RX function to use.
*
* @param priv
* Pointer to private structure.
*/
void
priv_select_rx_function(struct priv *priv)
{
priv->dev->rx_pkt_burst = mlx5_rx_burst;
}
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