-/*-
- * BSD LICENSE
- *
- * Copyright 2012 6WIND S.A.
- * Copyright 2012 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.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2012 6WIND S.A.
+ * Copyright 2012 Mellanox Technologies, Ltd
*/
-/*
- * Known limitations:
- * - RSS hash key and options cannot be modified.
+/**
+ * @file
+ * mlx4 driver initialization.
*/
-/* System headers. */
+#include <assert.h>
+#include <dlfcn.h>
+#include <errno.h>
+#include <inttypes.h>
#include <stddef.h>
+#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
-#include <stdint.h>
-#include <inttypes.h>
#include <string.h>
-#include <errno.h>
+#include <sys/mman.h>
#include <unistd.h>
-#include <assert.h>
-#include <net/if.h>
-#include <dirent.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <linux/ethtool.h>
-#include <linux/sockios.h>
-#include <fcntl.h>
-#include <rte_ether.h>
-#include <rte_ethdev.h>
-#include <rte_ethdev_pci.h>
+/* Verbs headers do not support -pedantic. */
+#ifdef PEDANTIC
+#pragma GCC diagnostic ignored "-Wpedantic"
+#endif
+#include <infiniband/verbs.h>
+#ifdef PEDANTIC
+#pragma GCC diagnostic error "-Wpedantic"
+#endif
+
+#include <rte_common.h>
+#include <rte_config.h>
#include <rte_dev.h>
-#include <rte_mbuf.h>
#include <rte_errno.h>
-#include <rte_mempool.h>
-#include <rte_prefetch.h>
-#include <rte_malloc.h>
-#include <rte_spinlock.h>
-#include <rte_atomic.h>
-#include <rte_log.h>
-#include <rte_alarm.h>
-#include <rte_memory.h>
+#include <rte_ethdev_driver.h>
+#include <rte_ethdev_pci.h>
+#include <rte_ether.h>
#include <rte_flow.h>
-#include <rte_kvargs.h>
#include <rte_interrupts.h>
-#include <rte_branch_prediction.h>
-
-/* Generated configuration header. */
-#include "mlx4_autoconf.h"
+#include <rte_kvargs.h>
+#include <rte_malloc.h>
+#include <rte_mbuf.h>
-/* PMD headers. */
#include "mlx4.h"
+#include "mlx4_glue.h"
#include "mlx4_flow.h"
+#include "mlx4_mr.h"
+#include "mlx4_rxtx.h"
+#include "mlx4_utils.h"
-/* Convenience macros for accessing mbuf fields. */
-#define NEXT(m) ((m)->next)
-#define DATA_LEN(m) ((m)->data_len)
-#define PKT_LEN(m) ((m)->pkt_len)
-#define DATA_OFF(m) ((m)->data_off)
-#define SET_DATA_OFF(m, o) ((m)->data_off = (o))
-#define NB_SEGS(m) ((m)->nb_segs)
-#define PORT(m) ((m)->port)
+static const char *MZ_MLX4_PMD_SHARED_DATA = "mlx4_pmd_shared_data";
-/* Work Request ID data type (64 bit). */
-typedef union {
- struct {
- uint32_t id;
- uint16_t offset;
- } data;
- uint64_t raw;
-} wr_id_t;
+/* Shared memory between primary and secondary processes. */
+struct mlx4_shared_data *mlx4_shared_data;
-#define WR_ID(o) (((wr_id_t *)&(o))->data)
+/* Spinlock for mlx4_shared_data allocation. */
+static rte_spinlock_t mlx4_shared_data_lock = RTE_SPINLOCK_INITIALIZER;
-/* Transpose flags. Useful to convert IBV to DPDK flags. */
-#define TRANSPOSE(val, from, to) \
- (((from) >= (to)) ? \
- (((val) & (from)) / ((from) / (to))) : \
- (((val) & (from)) * ((to) / (from))))
+/* Process local data for secondary processes. */
+static struct mlx4_local_data mlx4_local_data;
/** Configuration structure for device arguments. */
struct mlx4_conf {
uint32_t present; /**< Bit-field for existing ports. */
uint32_t enabled; /**< Bit-field for user-enabled ports. */
} ports;
+ int mr_ext_memseg_en;
+ /** Whether memseg should be extended for MR creation. */
};
/* Available parameters list. */
const char *pmd_mlx4_init_params[] = {
MLX4_PMD_PORT_KVARG,
+ MLX4_MR_EXT_MEMSEG_EN_KVARG,
NULL,
};
-static int
-mlx4_rx_intr_enable(struct rte_eth_dev *dev, uint16_t idx);
-
-static int
-mlx4_rx_intr_disable(struct rte_eth_dev *dev, uint16_t idx);
-
-static int
-priv_rx_intr_vec_enable(struct priv *priv);
-
-static void
-priv_rx_intr_vec_disable(struct priv *priv);
-
-/**
- * Lock private structure to protect it from concurrent access in the
- * control path.
- *
- * @param priv
- * Pointer to private structure.
- */
-void priv_lock(struct priv *priv)
-{
- rte_spinlock_lock(&priv->lock);
-}
-
-/**
- * Unlock private structure.
- *
- * @param priv
- * Pointer to private structure.
- */
-void priv_unlock(struct priv *priv)
-{
- rte_spinlock_unlock(&priv->lock);
-}
-
-/* Allocate a buffer on the stack and fill it with a printf format string. */
-#define MKSTR(name, ...) \
- char name[snprintf(NULL, 0, __VA_ARGS__) + 1]; \
- \
- snprintf(name, sizeof(name), __VA_ARGS__)
+static void mlx4_dev_stop(struct rte_eth_dev *dev);
/**
- * Get interface name from private structure.
+ * Initialize shared data between primary and secondary process.
*
- * @param[in] priv
- * Pointer to private structure.
- * @param[out] ifname
- * Interface name output buffer.
+ * A memzone is reserved by primary process and secondary processes attach to
+ * the memzone.
*
* @return
- * 0 on success, -1 on failure and errno is set.
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
-priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE])
+mlx4_init_shared_data(void)
{
- 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"));
+ const struct rte_memzone *mz;
+ int ret = 0;
- 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;
+ rte_spinlock_lock(&mlx4_shared_data_lock);
+ if (mlx4_shared_data == NULL) {
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
+ /* Allocate shared memory. */
+ mz = rte_memzone_reserve(MZ_MLX4_PMD_SHARED_DATA,
+ sizeof(*mlx4_shared_data),
+ SOCKET_ID_ANY, 0);
+ if (mz == NULL) {
+ ERROR("Cannot allocate mlx4 shared data\n");
+ ret = -rte_errno;
+ goto error;
+ }
+ mlx4_shared_data = mz->addr;
+ memset(mlx4_shared_data, 0, sizeof(*mlx4_shared_data));
+ rte_spinlock_init(&mlx4_shared_data->lock);
+ } else {
+ /* Lookup allocated shared memory. */
+ mz = rte_memzone_lookup(MZ_MLX4_PMD_SHARED_DATA);
+ if (mz == NULL) {
+ ERROR("Cannot attach mlx4 shared data\n");
+ ret = -rte_errno;
+ goto error;
+ }
+ mlx4_shared_data = mz->addr;
+ memset(&mlx4_local_data, 0, sizeof(mlx4_local_data));
}
- 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;
-}
-
-/**
- * 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;
-
- 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;
+error:
+ rte_spinlock_unlock(&mlx4_shared_data_lock);
return ret;
}
+#ifdef HAVE_IBV_MLX4_BUF_ALLOCATORS
/**
- * Get unsigned long sysfs property.
+ * Verbs callback to allocate a memory. This function should allocate the space
+ * according to the size provided residing inside a huge page.
+ * Please note that all allocation must respect the alignment from libmlx4
+ * (i.e. currently sysconf(_SC_PAGESIZE)).
*
- * @param priv
- * Pointer to private structure.
- * @param[in] name
- * Entry name relative to sysfs path.
- * @param[out] value
- * Value output buffer.
+ * @param[in] size
+ * The size in bytes of the memory to allocate.
+ * @param[in] data
+ * A pointer to the callback data.
*
* @return
- * 0 on success, -1 on failure and errno is set.
+ * Allocated buffer, NULL otherwise and rte_errno is set.
*/
-static int
-priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value)
+static void *
+mlx4_alloc_verbs_buf(size_t size, void *data)
{
- int ret;
- unsigned long value_ret;
- char value_str[32];
+ struct mlx4_priv *priv = data;
+ void *ret;
+ size_t alignment = sysconf(_SC_PAGESIZE);
+ unsigned int socket = SOCKET_ID_ANY;
- 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;
-}
+ if (priv->verbs_alloc_ctx.type == MLX4_VERBS_ALLOC_TYPE_TX_QUEUE) {
+ const struct txq *txq = priv->verbs_alloc_ctx.obj;
-/**
- * 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);
+ socket = txq->socket;
+ } else if (priv->verbs_alloc_ctx.type ==
+ MLX4_VERBS_ALLOC_TYPE_RX_QUEUE) {
+ const struct rxq *rxq = priv->verbs_alloc_ctx.obj;
- 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;
+ socket = rxq->socket;
}
- 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.
- */
-static 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);
+ assert(data != NULL);
+ ret = rte_malloc_socket(__func__, size, alignment, socket);
+ if (!ret && size)
+ rte_errno = ENOMEM;
return ret;
}
/**
- * Get device MTU.
+ * Verbs callback to free a memory.
*
- * @param priv
- * Pointer to private structure.
- * @param[out] mtu
- * MTU value output buffer.
- *
- * @return
- * 0 on success, -1 on failure and errno is set.
+ * @param[in] ptr
+ * A pointer to the memory to free.
+ * @param[in] data
+ * A pointer to the callback data.
*/
-static int
-priv_get_mtu(struct priv *priv, uint16_t *mtu)
+static void
+mlx4_free_verbs_buf(void *ptr, void *data __rte_unused)
{
- unsigned long ulong_mtu;
-
- if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1)
- return -1;
- *mtu = ulong_mtu;
- return 0;
+ assert(data != NULL);
+ rte_free(ptr);
}
+#endif
/**
- * Set device MTU.
+ * Initialize process private data structure.
*
- * @param priv
- * Pointer to private structure.
- * @param mtu
- * MTU value to set.
+ * @param dev
+ * Pointer to Ethernet device structure.
*
* @return
- * 0 on success, -1 on failure and errno is set.
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
-priv_set_mtu(struct priv *priv, uint16_t mtu)
+mlx4_proc_priv_init(struct rte_eth_dev *dev)
{
- uint16_t new_mtu;
+ struct mlx4_proc_priv *ppriv;
+ size_t ppriv_size;
- 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;
+ /*
+ * UAR register table follows the process private structure. BlueFlame
+ * registers for Tx queues are stored in the table.
+ */
+ ppriv_size = sizeof(struct mlx4_proc_priv) +
+ dev->data->nb_tx_queues * sizeof(void *);
+ ppriv = rte_malloc_socket("mlx4_proc_priv", ppriv_size,
+ RTE_CACHE_LINE_SIZE, dev->device->numa_node);
+ if (!ppriv) {
+ rte_errno = ENOMEM;
+ return -rte_errno;
+ }
+ ppriv->uar_table_sz = ppriv_size;
+ dev->process_private = ppriv;
+ return 0;
}
/**
- * 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.
+ * Un-initialize process private data structure.
*
- * @return
- * 0 on success, -1 on failure and errno is set.
+ * @param dev
+ * Pointer to Ethernet device structure.
*/
-static int
-priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags)
+static void
+mlx4_proc_priv_uninit(struct rte_eth_dev *dev)
{
- 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);
+ if (!dev->process_private)
+ return;
+ rte_free(dev->process_private);
+ dev->process_private = NULL;
}
-/* Device configuration. */
-
-static int
-txq_setup(struct rte_eth_dev *dev, struct txq *txq, uint16_t desc,
- unsigned int socket, const struct rte_eth_txconf *conf);
-
-static void
-txq_cleanup(struct txq *txq);
-
-static int
-rxq_setup(struct rte_eth_dev *dev, struct rxq *rxq, uint16_t desc,
- unsigned int socket, int inactive, const struct rte_eth_rxconf *conf,
- struct rte_mempool *mp);
-
-static void
-rxq_cleanup(struct rxq *rxq);
-
-static void
-priv_mac_addr_del(struct priv *priv);
-
/**
- * Ethernet device configuration.
- *
- * Prepare the driver for a given number of TX and RX queues.
- * Allocate parent RSS queue when several RX queues are requested.
+ * DPDK callback for Ethernet device configuration.
*
* @param dev
* Pointer to Ethernet device structure.
*
* @return
- * 0 on success, errno value on failure.
+ * 0 on success, negative errno value otherwise and rte_errno is set.
*/
static int
-dev_configure(struct rte_eth_dev *dev)
+mlx4_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 tmp;
+ struct mlx4_priv *priv = dev->data->dev_private;
+ struct rte_flow_error error;
int ret;
- 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->rxqs_n)
- return 0;
- if (!rte_is_power_of_2(rxqs_n) && !priv->isolated) {
- unsigned n_active;
-
- n_active = rte_align32pow2(rxqs_n + 1) >> 1;
- WARN("%p: number of RX queues must be a power"
- " of 2: %u queues among %u will be active",
- (void *)dev, n_active, rxqs_n);
- }
-
- INFO("%p: RX queues number update: %u -> %u",
- (void *)dev, priv->rxqs_n, rxqs_n);
- /* If RSS is enabled, disable it first. */
- if (priv->rss) {
- unsigned int i;
-
- /* Only if there are no remaining child RX queues. */
- for (i = 0; (i != priv->rxqs_n); ++i)
- if ((*priv->rxqs)[i] != NULL)
- return EINVAL;
- priv_mac_addr_del(priv);
- rxq_cleanup(&priv->rxq_parent);
- priv->rss = 0;
- priv->rxqs_n = 0;
- }
- if (rxqs_n <= 1) {
- /* Nothing else to do. */
- priv->rxqs_n = rxqs_n;
- return 0;
+ /* Prepare internal flow rules. */
+ ret = mlx4_flow_sync(priv, &error);
+ if (ret) {
+ ERROR("cannot set up internal flow rules (code %d, \"%s\"),"
+ " flow error type %d, cause %p, message: %s",
+ -ret, strerror(-ret), error.type, error.cause,
+ error.message ? error.message : "(unspecified)");
+ goto exit;
}
- /* Allocate a new RSS parent queue if supported by hardware. */
- if (!priv->hw_rss) {
- ERROR("%p: only a single RX queue can be configured when"
- " hardware doesn't support RSS",
+ ret = mlx4_intr_install(priv);
+ if (ret) {
+ ERROR("%p: interrupt handler installation failed",
(void *)dev);
- return EINVAL;
+ goto exit;
}
- /* Fail if hardware doesn't support that many RSS queues. */
- if (rxqs_n >= priv->max_rss_tbl_sz) {
- ERROR("%p: only %u RX queues can be configured for RSS",
- (void *)dev, priv->max_rss_tbl_sz);
- return EINVAL;
+ ret = mlx4_proc_priv_init(dev);
+ if (ret) {
+ ERROR("%p: process private data allocation failed",
+ (void *)dev);
+ goto exit;
}
- priv->rss = 1;
- tmp = priv->rxqs_n;
- priv->rxqs_n = rxqs_n;
- ret = rxq_setup(dev, &priv->rxq_parent, 0, 0, 0, NULL, NULL);
- if (!ret)
- return 0;
- /* Failure, rollback. */
- priv->rss = 0;
- priv->rxqs_n = tmp;
- assert(ret > 0);
+exit:
return ret;
}
/**
- * DPDK callback for Ethernet device configuration.
+ * DPDK callback to start the device.
+ *
+ * Simulate device start by initializing common RSS resources and attaching
+ * all configured flows.
*
* @param dev
* Pointer to Ethernet device structure.
*
* @return
- * 0 on success, negative errno value on failure.
+ * 0 on success, negative errno value otherwise and rte_errno is set.
*/
static int
-mlx4_dev_configure(struct rte_eth_dev *dev)
+mlx4_dev_start(struct rte_eth_dev *dev)
{
- struct priv *priv = dev->data->dev_private;
+ struct mlx4_priv *priv = dev->data->dev_private;
+ struct rte_flow_error error;
int ret;
- priv_lock(priv);
- ret = dev_configure(dev);
- assert(ret >= 0);
- priv_unlock(priv);
- return -ret;
-}
-
-static uint16_t mlx4_tx_burst(void *, struct rte_mbuf **, uint16_t);
-static uint16_t removed_rx_burst(void *, struct rte_mbuf **, uint16_t);
-
-/* TX queues handling. */
-
-/**
- * Allocate TX queue elements.
- *
- * @param txq
- * Pointer to TX queue structure.
- * @param elts_n
- * Number of elements to allocate.
- *
- * @return
- * 0 on success, errno value on failure.
- */
-static int
-txq_alloc_elts(struct txq *txq, unsigned int elts_n)
-{
- unsigned int i;
- struct txq_elt (*elts)[elts_n] =
- rte_calloc_socket("TXQ", 1, sizeof(*elts), 0, txq->socket);
- linear_t (*elts_linear)[elts_n] =
- rte_calloc_socket("TXQ", 1, sizeof(*elts_linear), 0,
- txq->socket);
- struct ibv_mr *mr_linear = NULL;
- int ret = 0;
-
- if ((elts == NULL) || (elts_linear == NULL)) {
- ERROR("%p: can't allocate packets array", (void *)txq);
- ret = ENOMEM;
- goto error;
+ if (priv->started)
+ return 0;
+ DEBUG("%p: attaching configured flows to all RX queues", (void *)dev);
+ priv->started = 1;
+ ret = mlx4_rss_init(priv);
+ if (ret) {
+ ERROR("%p: cannot initialize RSS resources: %s",
+ (void *)dev, strerror(-ret));
+ goto err;
}
- mr_linear =
- ibv_reg_mr(txq->priv->pd, elts_linear, sizeof(*elts_linear),
- IBV_ACCESS_LOCAL_WRITE);
- if (mr_linear == NULL) {
- ERROR("%p: unable to configure MR, ibv_reg_mr() failed",
- (void *)txq);
- ret = EINVAL;
- goto error;
+#ifndef NDEBUG
+ mlx4_mr_dump_dev(dev);
+#endif
+ ret = mlx4_rxq_intr_enable(priv);
+ if (ret) {
+ ERROR("%p: interrupt handler installation failed",
+ (void *)dev);
+ goto err;
}
- for (i = 0; (i != elts_n); ++i) {
- struct txq_elt *elt = &(*elts)[i];
-
- elt->buf = NULL;
+ ret = mlx4_flow_sync(priv, &error);
+ if (ret) {
+ ERROR("%p: cannot attach flow rules (code %d, \"%s\"),"
+ " flow error type %d, cause %p, message: %s",
+ (void *)dev,
+ -ret, strerror(-ret), error.type, error.cause,
+ error.message ? error.message : "(unspecified)");
+ goto err;
}
- DEBUG("%p: allocated and configured %u WRs", (void *)txq, elts_n);
- txq->elts_n = elts_n;
- txq->elts = elts;
- txq->elts_head = 0;
- txq->elts_tail = 0;
- txq->elts_comp = 0;
- /* Request send completion every MLX4_PMD_TX_PER_COMP_REQ packets or
- * at least 4 times per ring. */
- txq->elts_comp_cd_init =
- ((MLX4_PMD_TX_PER_COMP_REQ < (elts_n / 4)) ?
- MLX4_PMD_TX_PER_COMP_REQ : (elts_n / 4));
- txq->elts_comp_cd = txq->elts_comp_cd_init;
- txq->elts_linear = elts_linear;
- txq->mr_linear = mr_linear;
- assert(ret == 0);
+ rte_wmb();
+ dev->tx_pkt_burst = mlx4_tx_burst;
+ dev->rx_pkt_burst = mlx4_rx_burst;
+ /* Enable datapath on secondary process. */
+ mlx4_mp_req_start_rxtx(dev);
return 0;
-error:
- if (mr_linear != NULL)
- claim_zero(ibv_dereg_mr(mr_linear));
-
- rte_free(elts_linear);
- rte_free(elts);
-
- DEBUG("%p: failed, freed everything", (void *)txq);
- assert(ret > 0);
+err:
+ mlx4_dev_stop(dev);
return ret;
}
/**
- * Free TX queue elements.
- *
- * @param txq
- * Pointer to TX queue structure.
- */
-static void
-txq_free_elts(struct txq *txq)
-{
- unsigned int elts_n = txq->elts_n;
- unsigned int elts_head = txq->elts_head;
- unsigned int elts_tail = txq->elts_tail;
- struct txq_elt (*elts)[elts_n] = txq->elts;
- linear_t (*elts_linear)[elts_n] = txq->elts_linear;
- struct ibv_mr *mr_linear = txq->mr_linear;
-
- DEBUG("%p: freeing WRs", (void *)txq);
- txq->elts_n = 0;
- txq->elts_head = 0;
- txq->elts_tail = 0;
- txq->elts_comp = 0;
- txq->elts_comp_cd = 0;
- txq->elts_comp_cd_init = 0;
- txq->elts = NULL;
- txq->elts_linear = NULL;
- txq->mr_linear = NULL;
- if (mr_linear != NULL)
- claim_zero(ibv_dereg_mr(mr_linear));
-
- rte_free(elts_linear);
- if (elts == NULL)
- return;
- while (elts_tail != elts_head) {
- struct txq_elt *elt = &(*elts)[elts_tail];
-
- assert(elt->buf != NULL);
- rte_pktmbuf_free(elt->buf);
-#ifndef NDEBUG
- /* Poisoning. */
- memset(elt, 0x77, sizeof(*elt));
-#endif
- if (++elts_tail == elts_n)
- elts_tail = 0;
- }
- rte_free(elts);
-}
-
-
-/**
- * Clean up a TX queue.
+ * DPDK callback to stop the device.
*
- * Destroy objects, free allocated memory and reset the structure for reuse.
+ * Simulate device stop by detaching all configured flows.
*
- * @param txq
- * Pointer to TX queue structure.
+ * @param dev
+ * Pointer to Ethernet device structure.
*/
static void
-txq_cleanup(struct txq *txq)
-{
- struct ibv_exp_release_intf_params params;
- size_t i;
-
- DEBUG("cleaning up %p", (void *)txq);
- txq_free_elts(txq);
- if (txq->if_qp != NULL) {
- assert(txq->priv != NULL);
- assert(txq->priv->ctx != NULL);
- assert(txq->qp != NULL);
- params = (struct ibv_exp_release_intf_params){
- .comp_mask = 0,
- };
- claim_zero(ibv_exp_release_intf(txq->priv->ctx,
- txq->if_qp,
- ¶ms));
- }
- if (txq->if_cq != NULL) {
- assert(txq->priv != NULL);
- assert(txq->priv->ctx != NULL);
- assert(txq->cq != NULL);
- params = (struct ibv_exp_release_intf_params){
- .comp_mask = 0,
- };
- claim_zero(ibv_exp_release_intf(txq->priv->ctx,
- txq->if_cq,
- ¶ms));
- }
- if (txq->qp != NULL)
- claim_zero(ibv_destroy_qp(txq->qp));
- if (txq->cq != NULL)
- claim_zero(ibv_destroy_cq(txq->cq));
- if (txq->rd != NULL) {
- struct ibv_exp_destroy_res_domain_attr attr = {
- .comp_mask = 0,
- };
-
- assert(txq->priv != NULL);
- assert(txq->priv->ctx != NULL);
- claim_zero(ibv_exp_destroy_res_domain(txq->priv->ctx,
- txq->rd,
- &attr));
- }
- for (i = 0; (i != elemof(txq->mp2mr)); ++i) {
- if (txq->mp2mr[i].mp == NULL)
- break;
- assert(txq->mp2mr[i].mr != NULL);
- claim_zero(ibv_dereg_mr(txq->mp2mr[i].mr));
- }
- memset(txq, 0, sizeof(*txq));
-}
-
-/**
- * Manage TX completions.
- *
- * When sending a burst, mlx4_tx_burst() posts several WRs.
- * To improve performance, a completion event is only required once every
- * MLX4_PMD_TX_PER_COMP_REQ sends. Doing so discards completion information
- * for other WRs, but this information would not be used anyway.
- *
- * @param txq
- * Pointer to TX queue structure.
- *
- * @return
- * 0 on success, -1 on failure.
- */
-static int
-txq_complete(struct txq *txq)
-{
- unsigned int elts_comp = txq->elts_comp;
- unsigned int elts_tail = txq->elts_tail;
- const unsigned int elts_n = txq->elts_n;
- int wcs_n;
-
- if (unlikely(elts_comp == 0))
- return 0;
- wcs_n = txq->if_cq->poll_cnt(txq->cq, elts_comp);
- if (unlikely(wcs_n == 0))
- return 0;
- if (unlikely(wcs_n < 0)) {
- DEBUG("%p: ibv_poll_cq() failed (wcs_n=%d)",
- (void *)txq, wcs_n);
- return -1;
- }
- elts_comp -= wcs_n;
- assert(elts_comp <= txq->elts_comp);
- /*
- * Assume WC status is successful as nothing can be done about it
- * anyway.
- */
- elts_tail += wcs_n * txq->elts_comp_cd_init;
- if (elts_tail >= elts_n)
- elts_tail -= elts_n;
- txq->elts_tail = elts_tail;
- txq->elts_comp = elts_comp;
- return 0;
-}
-
-struct mlx4_check_mempool_data {
- int ret;
- char *start;
- char *end;
-};
-
-/* Called by mlx4_check_mempool() when iterating the memory chunks. */
-static void mlx4_check_mempool_cb(struct rte_mempool *mp,
- void *opaque, struct rte_mempool_memhdr *memhdr,
- unsigned mem_idx)
-{
- struct mlx4_check_mempool_data *data = opaque;
-
- (void)mp;
- (void)mem_idx;
-
- /* It already failed, skip the next chunks. */
- if (data->ret != 0)
- return;
- /* It is the first chunk. */
- if (data->start == NULL && data->end == NULL) {
- data->start = memhdr->addr;
- data->end = data->start + memhdr->len;
- return;
- }
- if (data->end == memhdr->addr) {
- data->end += memhdr->len;
- return;
- }
- if (data->start == (char *)memhdr->addr + memhdr->len) {
- data->start -= memhdr->len;
- return;
- }
- /* Error, mempool is not virtually contigous. */
- data->ret = -1;
-}
-
-/**
- * Check if a mempool can be used: it must be virtually contiguous.
- *
- * @param[in] mp
- * Pointer to memory pool.
- * @param[out] start
- * Pointer to the start address of the mempool virtual memory area
- * @param[out] end
- * Pointer to the end address of the mempool virtual memory area
- *
- * @return
- * 0 on success (mempool is virtually contiguous), -1 on error.
- */
-static int mlx4_check_mempool(struct rte_mempool *mp, uintptr_t *start,
- uintptr_t *end)
-{
- struct mlx4_check_mempool_data data;
-
- memset(&data, 0, sizeof(data));
- rte_mempool_mem_iter(mp, mlx4_check_mempool_cb, &data);
- *start = (uintptr_t)data.start;
- *end = (uintptr_t)data.end;
-
- return data.ret;
-}
-
-/* For best performance, this function should not be inlined. */
-static struct ibv_mr *mlx4_mp2mr(struct ibv_pd *, struct rte_mempool *)
- __rte_noinline;
-
-/**
- * Register mempool as a memory region.
- *
- * @param pd
- * Pointer to protection domain.
- * @param mp
- * Pointer to memory pool.
- *
- * @return
- * Memory region pointer, NULL in case of error.
- */
-static struct ibv_mr *
-mlx4_mp2mr(struct ibv_pd *pd, struct rte_mempool *mp)
-{
- const struct rte_memseg *ms = rte_eal_get_physmem_layout();
- uintptr_t start;
- uintptr_t end;
- unsigned int i;
-
- if (mlx4_check_mempool(mp, &start, &end) != 0) {
- ERROR("mempool %p: not virtually contiguous",
- (void *)mp);
- return NULL;
- }
-
- DEBUG("mempool %p area start=%p end=%p size=%zu",
- (void *)mp, (void *)start, (void *)end,
- (size_t)(end - start));
- /* Round start and end to page boundary if found in memory segments. */
- for (i = 0; (i < RTE_MAX_MEMSEG) && (ms[i].addr != NULL); ++i) {
- uintptr_t addr = (uintptr_t)ms[i].addr;
- size_t len = ms[i].len;
- unsigned int align = ms[i].hugepage_sz;
-
- if ((start > addr) && (start < addr + len))
- start = RTE_ALIGN_FLOOR(start, align);
- if ((end > addr) && (end < addr + len))
- end = RTE_ALIGN_CEIL(end, align);
- }
- DEBUG("mempool %p using start=%p end=%p size=%zu for MR",
- (void *)mp, (void *)start, (void *)end,
- (size_t)(end - start));
- return ibv_reg_mr(pd,
- (void *)start,
- end - start,
- IBV_ACCESS_LOCAL_WRITE);
-}
-
-/**
- * Get Memory Pool (MP) from mbuf. If mbuf is indirect, the pool from which
- * the cloned mbuf is allocated is returned instead.
- *
- * @param buf
- * Pointer to mbuf.
- *
- * @return
- * Memory pool where data is located for given mbuf.
- */
-static struct rte_mempool *
-txq_mb2mp(struct rte_mbuf *buf)
-{
- if (unlikely(RTE_MBUF_INDIRECT(buf)))
- return rte_mbuf_from_indirect(buf)->pool;
- return buf->pool;
-}
-
-/**
- * Get Memory Region (MR) <-> Memory Pool (MP) association from txq->mp2mr[].
- * Add MP to txq->mp2mr[] if it's not registered yet. If mp2mr[] is full,
- * remove an entry first.
- *
- * @param txq
- * Pointer to TX queue structure.
- * @param[in] mp
- * Memory Pool for which a Memory Region lkey must be returned.
- *
- * @return
- * mr->lkey on success, (uint32_t)-1 on failure.
- */
-static uint32_t
-txq_mp2mr(struct txq *txq, struct rte_mempool *mp)
-{
- unsigned int i;
- struct ibv_mr *mr;
-
- for (i = 0; (i != elemof(txq->mp2mr)); ++i) {
- if (unlikely(txq->mp2mr[i].mp == NULL)) {
- /* Unknown MP, add a new MR for it. */
- break;
- }
- if (txq->mp2mr[i].mp == mp) {
- assert(txq->mp2mr[i].lkey != (uint32_t)-1);
- assert(txq->mp2mr[i].mr->lkey == txq->mp2mr[i].lkey);
- return txq->mp2mr[i].lkey;
- }
- }
- /* Add a new entry, register MR first. */
- DEBUG("%p: discovered new memory pool \"%s\" (%p)",
- (void *)txq, mp->name, (void *)mp);
- mr = mlx4_mp2mr(txq->priv->pd, mp);
- if (unlikely(mr == NULL)) {
- DEBUG("%p: unable to configure MR, ibv_reg_mr() failed.",
- (void *)txq);
- return (uint32_t)-1;
- }
- if (unlikely(i == elemof(txq->mp2mr))) {
- /* Table is full, remove oldest entry. */
- DEBUG("%p: MR <-> MP table full, dropping oldest entry.",
- (void *)txq);
- --i;
- claim_zero(ibv_dereg_mr(txq->mp2mr[0].mr));
- memmove(&txq->mp2mr[0], &txq->mp2mr[1],
- (sizeof(txq->mp2mr) - sizeof(txq->mp2mr[0])));
- }
- /* Store the new entry. */
- txq->mp2mr[i].mp = mp;
- txq->mp2mr[i].mr = mr;
- txq->mp2mr[i].lkey = mr->lkey;
- DEBUG("%p: new MR lkey for MP \"%s\" (%p): 0x%08" PRIu32,
- (void *)txq, mp->name, (void *)mp, txq->mp2mr[i].lkey);
- return txq->mp2mr[i].lkey;
-}
-
-struct txq_mp2mr_mbuf_check_data {
- int ret;
-};
-
-/**
- * Callback function for rte_mempool_obj_iter() to check whether a given
- * mempool object looks like a mbuf.
- *
- * @param[in] mp
- * The mempool pointer
- * @param[in] arg
- * Context data (struct txq_mp2mr_mbuf_check_data). Contains the
- * return value.
- * @param[in] obj
- * Object address.
- * @param index
- * Object index, unused.
- */
-static void
-txq_mp2mr_mbuf_check(struct rte_mempool *mp, void *arg, void *obj,
- uint32_t index __rte_unused)
-{
- struct txq_mp2mr_mbuf_check_data *data = arg;
- struct rte_mbuf *buf = obj;
-
- /* Check whether mbuf structure fits element size and whether mempool
- * pointer is valid. */
- if (sizeof(*buf) > mp->elt_size || buf->pool != mp)
- data->ret = -1;
-}
-
-/**
- * Iterator function for rte_mempool_walk() to register existing mempools and
- * fill the MP to MR cache of a TX queue.
- *
- * @param[in] mp
- * Memory Pool to register.
- * @param *arg
- * Pointer to TX queue structure.
- */
-static void
-txq_mp2mr_iter(struct rte_mempool *mp, void *arg)
-{
- struct txq *txq = arg;
- struct txq_mp2mr_mbuf_check_data data = {
- .ret = 0,
- };
-
- /* Register mempool only if the first element looks like a mbuf. */
- if (rte_mempool_obj_iter(mp, txq_mp2mr_mbuf_check, &data) == 0 ||
- data.ret == -1)
- return;
- txq_mp2mr(txq, mp);
-}
-
-/**
- * Copy scattered mbuf contents to a single linear buffer.
- *
- * @param[out] linear
- * Linear output buffer.
- * @param[in] buf
- * Scattered input buffer.
- *
- * @return
- * Number of bytes copied to the output buffer or 0 if not large enough.
- */
-static unsigned int
-linearize_mbuf(linear_t *linear, struct rte_mbuf *buf)
-{
- unsigned int size = 0;
- unsigned int offset;
-
- do {
- unsigned int len = DATA_LEN(buf);
-
- offset = size;
- size += len;
- if (unlikely(size > sizeof(*linear)))
- return 0;
- memcpy(&(*linear)[offset],
- rte_pktmbuf_mtod(buf, uint8_t *),
- len);
- buf = NEXT(buf);
- } while (buf != NULL);
- return size;
-}
-
-/**
- * Handle scattered buffers for mlx4_tx_burst().
- *
- * @param txq
- * TX queue structure.
- * @param segs
- * Number of segments in buf.
- * @param elt
- * TX queue element to fill.
- * @param[in] buf
- * Buffer to process.
- * @param elts_head
- * Index of the linear buffer to use if necessary (normally txq->elts_head).
- * @param[out] sges
- * Array filled with SGEs on success.
- *
- * @return
- * A structure containing the processed packet size in bytes and the
- * number of SGEs. Both fields are set to (unsigned int)-1 in case of
- * failure.
- */
-static struct tx_burst_sg_ret {
- unsigned int length;
- unsigned int num;
-}
-tx_burst_sg(struct txq *txq, unsigned int segs, struct txq_elt *elt,
- struct rte_mbuf *buf, unsigned int elts_head,
- struct ibv_sge (*sges)[MLX4_PMD_SGE_WR_N])
-{
- unsigned int sent_size = 0;
- unsigned int j;
- int linearize = 0;
-
- /* When there are too many segments, extra segments are
- * linearized in the last SGE. */
- if (unlikely(segs > elemof(*sges))) {
- segs = (elemof(*sges) - 1);
- linearize = 1;
- }
- /* Update element. */
- elt->buf = buf;
- /* Register segments as SGEs. */
- for (j = 0; (j != segs); ++j) {
- struct ibv_sge *sge = &(*sges)[j];
- uint32_t lkey;
-
- /* Retrieve Memory Region key for this memory pool. */
- lkey = txq_mp2mr(txq, txq_mb2mp(buf));
- if (unlikely(lkey == (uint32_t)-1)) {
- /* MR does not exist. */
- DEBUG("%p: unable to get MP <-> MR association",
- (void *)txq);
- /* Clean up TX element. */
- elt->buf = NULL;
- goto stop;
- }
- /* Update SGE. */
- sge->addr = rte_pktmbuf_mtod(buf, uintptr_t);
- if (txq->priv->vf)
- rte_prefetch0((volatile void *)
- (uintptr_t)sge->addr);
- sge->length = DATA_LEN(buf);
- sge->lkey = lkey;
- sent_size += sge->length;
- buf = NEXT(buf);
- }
- /* If buf is not NULL here and is not going to be linearized,
- * nb_segs is not valid. */
- assert(j == segs);
- assert((buf == NULL) || (linearize));
- /* Linearize extra segments. */
- if (linearize) {
- struct ibv_sge *sge = &(*sges)[segs];
- linear_t *linear = &(*txq->elts_linear)[elts_head];
- unsigned int size = linearize_mbuf(linear, buf);
-
- assert(segs == (elemof(*sges) - 1));
- if (size == 0) {
- /* Invalid packet. */
- DEBUG("%p: packet too large to be linearized.",
- (void *)txq);
- /* Clean up TX element. */
- elt->buf = NULL;
- goto stop;
- }
- /* If MLX4_PMD_SGE_WR_N is 1, free mbuf immediately. */
- if (elemof(*sges) == 1) {
- do {
- struct rte_mbuf *next = NEXT(buf);
-
- rte_pktmbuf_free_seg(buf);
- buf = next;
- } while (buf != NULL);
- elt->buf = NULL;
- }
- /* Update SGE. */
- sge->addr = (uintptr_t)&(*linear)[0];
- sge->length = size;
- sge->lkey = txq->mr_linear->lkey;
- sent_size += size;
- /* Include last segment. */
- segs++;
- }
- return (struct tx_burst_sg_ret){
- .length = sent_size,
- .num = segs,
- };
-stop:
- return (struct tx_burst_sg_ret){
- .length = -1,
- .num = -1,
- };
-}
-
-/**
- * DPDK callback for TX.
- *
- * @param dpdk_txq
- * Generic pointer to TX queue structure.
- * @param[in] pkts
- * Packets to transmit.
- * @param pkts_n
- * Number of packets in array.
- *
- * @return
- * Number of packets successfully transmitted (<= pkts_n).
- */
-static uint16_t
-mlx4_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
-{
- struct txq *txq = (struct txq *)dpdk_txq;
- unsigned int elts_head = txq->elts_head;
- const unsigned int elts_n = txq->elts_n;
- unsigned int elts_comp_cd = txq->elts_comp_cd;
- unsigned int elts_comp = 0;
- unsigned int i;
- unsigned int max;
- int err;
-
- assert(elts_comp_cd != 0);
- txq_complete(txq);
- max = (elts_n - (elts_head - txq->elts_tail));
- if (max > elts_n)
- max -= elts_n;
- assert(max >= 1);
- assert(max <= elts_n);
- /* Always leave one free entry in the ring. */
- --max;
- if (max == 0)
- return 0;
- if (max > pkts_n)
- max = pkts_n;
- for (i = 0; (i != max); ++i) {
- struct rte_mbuf *buf = pkts[i];
- unsigned int elts_head_next =
- (((elts_head + 1) == elts_n) ? 0 : elts_head + 1);
- struct txq_elt *elt_next = &(*txq->elts)[elts_head_next];
- struct txq_elt *elt = &(*txq->elts)[elts_head];
- unsigned int segs = NB_SEGS(buf);
- unsigned int sent_size = 0;
- uint32_t send_flags = 0;
-
- /* Clean up old buffer. */
- if (likely(elt->buf != NULL)) {
- struct rte_mbuf *tmp = elt->buf;
-
-#ifndef NDEBUG
- /* Poisoning. */
- memset(elt, 0x66, sizeof(*elt));
-#endif
- /* Faster than rte_pktmbuf_free(). */
- do {
- struct rte_mbuf *next = NEXT(tmp);
-
- rte_pktmbuf_free_seg(tmp);
- tmp = next;
- } while (tmp != NULL);
- }
- /* Request TX completion. */
- if (unlikely(--elts_comp_cd == 0)) {
- elts_comp_cd = txq->elts_comp_cd_init;
- ++elts_comp;
- send_flags |= IBV_EXP_QP_BURST_SIGNALED;
- }
- /* Should we enable HW CKSUM offload */
- if (buf->ol_flags &
- (PKT_TX_IP_CKSUM | PKT_TX_TCP_CKSUM | PKT_TX_UDP_CKSUM)) {
- send_flags |= IBV_EXP_QP_BURST_IP_CSUM;
- /* HW does not support checksum offloads at arbitrary
- * offsets but automatically recognizes the packet
- * type. For inner L3/L4 checksums, only VXLAN (UDP)
- * tunnels are currently supported. */
- if (RTE_ETH_IS_TUNNEL_PKT(buf->packet_type))
- send_flags |= IBV_EXP_QP_BURST_TUNNEL;
- }
- if (likely(segs == 1)) {
- uintptr_t addr;
- uint32_t length;
- uint32_t lkey;
-
- /* Retrieve buffer information. */
- addr = rte_pktmbuf_mtod(buf, uintptr_t);
- length = DATA_LEN(buf);
- /* Retrieve Memory Region key for this memory pool. */
- lkey = txq_mp2mr(txq, txq_mb2mp(buf));
- if (unlikely(lkey == (uint32_t)-1)) {
- /* MR does not exist. */
- DEBUG("%p: unable to get MP <-> MR"
- " association", (void *)txq);
- /* Clean up TX element. */
- elt->buf = NULL;
- goto stop;
- }
- /* Update element. */
- elt->buf = buf;
- if (txq->priv->vf)
- rte_prefetch0((volatile void *)
- (uintptr_t)addr);
- RTE_MBUF_PREFETCH_TO_FREE(elt_next->buf);
- /* Put packet into send queue. */
- if (length <= txq->max_inline)
- err = txq->if_qp->send_pending_inline
- (txq->qp,
- (void *)addr,
- length,
- send_flags);
- else
- err = txq->if_qp->send_pending
- (txq->qp,
- addr,
- length,
- lkey,
- send_flags);
- if (unlikely(err))
- goto stop;
- sent_size += length;
- } else {
- struct ibv_sge sges[MLX4_PMD_SGE_WR_N];
- struct tx_burst_sg_ret ret;
-
- ret = tx_burst_sg(txq, segs, elt, buf, elts_head,
- &sges);
- if (ret.length == (unsigned int)-1)
- goto stop;
- RTE_MBUF_PREFETCH_TO_FREE(elt_next->buf);
- /* Put SG list into send queue. */
- err = txq->if_qp->send_pending_sg_list
- (txq->qp,
- sges,
- ret.num,
- send_flags);
- if (unlikely(err))
- goto stop;
- sent_size += ret.length;
- }
- elts_head = elts_head_next;
- /* Increment sent bytes counter. */
- txq->stats.obytes += sent_size;
- }
-stop:
- /* Take a shortcut if nothing must be sent. */
- if (unlikely(i == 0))
- return 0;
- /* Increment sent packets counter. */
- txq->stats.opackets += i;
- /* Ring QP doorbell. */
- err = txq->if_qp->send_flush(txq->qp);
- if (unlikely(err)) {
- /* A nonzero value is not supposed to be returned.
- * Nothing can be done about it. */
- DEBUG("%p: send_flush() failed with error %d",
- (void *)txq, err);
- }
- txq->elts_head = elts_head;
- txq->elts_comp += elts_comp;
- txq->elts_comp_cd = elts_comp_cd;
- return i;
-}
-
-/**
- * Configure a TX queue.
- *
- * @param dev
- * Pointer to Ethernet device structure.
- * @param txq
- * Pointer to TX queue structure.
- * @param desc
- * Number of descriptors to configure in queue.
- * @param socket
- * NUMA socket on which memory must be allocated.
- * @param[in] conf
- * Thresholds parameters.
- *
- * @return
- * 0 on success, errno value on failure.
- */
-static int
-txq_setup(struct rte_eth_dev *dev, struct txq *txq, uint16_t desc,
- unsigned int socket, const struct rte_eth_txconf *conf)
-{
- struct priv *priv = dev->data->dev_private;
- struct txq tmpl = {
- .priv = priv,
- .socket = socket
- };
- union {
- struct ibv_exp_query_intf_params params;
- struct ibv_exp_qp_init_attr init;
- struct ibv_exp_res_domain_init_attr rd;
- struct ibv_exp_cq_init_attr cq;
- struct ibv_exp_qp_attr mod;
- } attr;
- enum ibv_exp_query_intf_status status;
- int ret = 0;
-
- (void)conf; /* Thresholds configuration (ignored). */
- if (priv == NULL)
- return EINVAL;
- if ((desc == 0) || (desc % MLX4_PMD_SGE_WR_N)) {
- ERROR("%p: invalid number of TX descriptors (must be a"
- " multiple of %d)", (void *)dev, MLX4_PMD_SGE_WR_N);
- return EINVAL;
- }
- desc /= MLX4_PMD_SGE_WR_N;
- /* MRs will be registered in mp2mr[] later. */
- attr.rd = (struct ibv_exp_res_domain_init_attr){
- .comp_mask = (IBV_EXP_RES_DOMAIN_THREAD_MODEL |
- IBV_EXP_RES_DOMAIN_MSG_MODEL),
- .thread_model = IBV_EXP_THREAD_SINGLE,
- .msg_model = IBV_EXP_MSG_HIGH_BW,
- };
- tmpl.rd = ibv_exp_create_res_domain(priv->ctx, &attr.rd);
- if (tmpl.rd == NULL) {
- ret = ENOMEM;
- ERROR("%p: RD creation failure: %s",
- (void *)dev, strerror(ret));
- goto error;
- }
- attr.cq = (struct ibv_exp_cq_init_attr){
- .comp_mask = IBV_EXP_CQ_INIT_ATTR_RES_DOMAIN,
- .res_domain = tmpl.rd,
- };
- tmpl.cq = ibv_exp_create_cq(priv->ctx, desc, NULL, NULL, 0, &attr.cq);
- if (tmpl.cq == NULL) {
- ret = ENOMEM;
- ERROR("%p: CQ creation failure: %s",
- (void *)dev, strerror(ret));
- goto error;
- }
- DEBUG("priv->device_attr.max_qp_wr is %d",
- priv->device_attr.max_qp_wr);
- DEBUG("priv->device_attr.max_sge is %d",
- priv->device_attr.max_sge);
- attr.init = (struct ibv_exp_qp_init_attr){
- /* CQ to be associated with the send queue. */
- .send_cq = tmpl.cq,
- /* CQ to be associated with the receive queue. */
- .recv_cq = tmpl.cq,
- .cap = {
- /* Max number of outstanding WRs. */
- .max_send_wr = ((priv->device_attr.max_qp_wr < desc) ?
- priv->device_attr.max_qp_wr :
- desc),
- /* Max number of scatter/gather elements in a WR. */
- .max_send_sge = ((priv->device_attr.max_sge <
- MLX4_PMD_SGE_WR_N) ?
- priv->device_attr.max_sge :
- MLX4_PMD_SGE_WR_N),
- .max_inline_data = MLX4_PMD_MAX_INLINE,
- },
- .qp_type = IBV_QPT_RAW_PACKET,
- /* Do *NOT* enable this, completions events are managed per
- * TX burst. */
- .sq_sig_all = 0,
- .pd = priv->pd,
- .res_domain = tmpl.rd,
- .comp_mask = (IBV_EXP_QP_INIT_ATTR_PD |
- IBV_EXP_QP_INIT_ATTR_RES_DOMAIN),
- };
- tmpl.qp = ibv_exp_create_qp(priv->ctx, &attr.init);
- if (tmpl.qp == NULL) {
- ret = (errno ? errno : EINVAL);
- ERROR("%p: QP creation failure: %s",
- (void *)dev, strerror(ret));
- goto error;
- }
- /* ibv_create_qp() updates this value. */
- tmpl.max_inline = attr.init.cap.max_inline_data;
- attr.mod = (struct ibv_exp_qp_attr){
- /* Move the QP to this state. */
- .qp_state = IBV_QPS_INIT,
- /* Primary port number. */
- .port_num = priv->port
- };
- ret = ibv_exp_modify_qp(tmpl.qp, &attr.mod,
- (IBV_EXP_QP_STATE | IBV_EXP_QP_PORT));
- if (ret) {
- ERROR("%p: QP state to IBV_QPS_INIT failed: %s",
- (void *)dev, strerror(ret));
- goto error;
- }
- ret = txq_alloc_elts(&tmpl, desc);
- if (ret) {
- ERROR("%p: TXQ allocation failed: %s",
- (void *)dev, strerror(ret));
- goto error;
- }
- attr.mod = (struct ibv_exp_qp_attr){
- .qp_state = IBV_QPS_RTR
- };
- ret = ibv_exp_modify_qp(tmpl.qp, &attr.mod, IBV_EXP_QP_STATE);
- if (ret) {
- ERROR("%p: QP state to IBV_QPS_RTR failed: %s",
- (void *)dev, strerror(ret));
- goto error;
- }
- attr.mod.qp_state = IBV_QPS_RTS;
- ret = ibv_exp_modify_qp(tmpl.qp, &attr.mod, IBV_EXP_QP_STATE);
- if (ret) {
- ERROR("%p: QP state to IBV_QPS_RTS failed: %s",
- (void *)dev, strerror(ret));
- goto error;
- }
- attr.params = (struct ibv_exp_query_intf_params){
- .intf_scope = IBV_EXP_INTF_GLOBAL,
- .intf = IBV_EXP_INTF_CQ,
- .obj = tmpl.cq,
- };
- tmpl.if_cq = ibv_exp_query_intf(priv->ctx, &attr.params, &status);
- if (tmpl.if_cq == NULL) {
- ERROR("%p: CQ interface family query failed with status %d",
- (void *)dev, status);
- goto error;
- }
- attr.params = (struct ibv_exp_query_intf_params){
- .intf_scope = IBV_EXP_INTF_GLOBAL,
- .intf = IBV_EXP_INTF_QP_BURST,
- .obj = tmpl.qp,
-#ifdef HAVE_EXP_QP_BURST_CREATE_DISABLE_ETH_LOOPBACK
- /* MC loopback must be disabled when not using a VF. */
- .family_flags =
- (!priv->vf ?
- IBV_EXP_QP_BURST_CREATE_DISABLE_ETH_LOOPBACK :
- 0),
-#endif
- };
- tmpl.if_qp = ibv_exp_query_intf(priv->ctx, &attr.params, &status);
- if (tmpl.if_qp == NULL) {
- ERROR("%p: QP interface family query failed with status %d",
- (void *)dev, status);
- goto error;
- }
- /* Clean up txq in case we're reinitializing it. */
- DEBUG("%p: cleaning-up old txq just in case", (void *)txq);
- txq_cleanup(txq);
- *txq = tmpl;
- DEBUG("%p: txq updated with %p", (void *)txq, (void *)&tmpl);
- /* Pre-register known mempools. */
- rte_mempool_walk(txq_mp2mr_iter, txq);
- assert(ret == 0);
- return 0;
-error:
- txq_cleanup(&tmpl);
- assert(ret > 0);
- return ret;
-}
-
-/**
- * DPDK callback to configure a TX queue.
- *
- * @param dev
- * Pointer to Ethernet device structure.
- * @param idx
- * TX queue index.
- * @param desc
- * Number of descriptors to configure in queue.
- * @param socket
- * NUMA socket on which memory must be allocated.
- * @param[in] conf
- * Thresholds parameters.
- *
- * @return
- * 0 on success, negative errno value on failure.
- */
-static int
-mlx4_tx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
- unsigned int socket, const struct rte_eth_txconf *conf)
-{
- struct priv *priv = dev->data->dev_private;
- struct txq *txq = (*priv->txqs)[idx];
- int ret;
-
- priv_lock(priv);
- DEBUG("%p: configuring queue %u for %u descriptors",
- (void *)dev, idx, desc);
- if (idx >= priv->txqs_n) {
- ERROR("%p: queue index out of range (%u >= %u)",
- (void *)dev, idx, priv->txqs_n);
- priv_unlock(priv);
- return -EOVERFLOW;
- }
- if (txq != NULL) {
- DEBUG("%p: reusing already allocated queue index %u (%p)",
- (void *)dev, idx, (void *)txq);
- if (priv->started) {
- priv_unlock(priv);
- return -EEXIST;
- }
- (*priv->txqs)[idx] = NULL;
- txq_cleanup(txq);
- } else {
- txq = rte_calloc_socket("TXQ", 1, sizeof(*txq), 0, socket);
- if (txq == NULL) {
- ERROR("%p: unable to allocate queue index %u",
- (void *)dev, idx);
- priv_unlock(priv);
- return -ENOMEM;
- }
- }
- ret = txq_setup(dev, txq, desc, socket, conf);
- if (ret)
- rte_free(txq);
- else {
- txq->stats.idx = idx;
- DEBUG("%p: adding TX queue %p to list",
- (void *)dev, (void *)txq);
- (*priv->txqs)[idx] = txq;
- /* Update send callback. */
- dev->tx_pkt_burst = mlx4_tx_burst;
- }
- priv_unlock(priv);
- return -ret;
-}
-
-/**
- * DPDK callback to release a TX queue.
- *
- * @param dpdk_txq
- * Generic TX queue pointer.
- */
-static void
-mlx4_tx_queue_release(void *dpdk_txq)
-{
- struct txq *txq = (struct txq *)dpdk_txq;
- struct priv *priv;
- unsigned int i;
-
- if (txq == NULL)
- return;
- priv = txq->priv;
- priv_lock(priv);
- for (i = 0; (i != priv->txqs_n); ++i)
- if ((*priv->txqs)[i] == txq) {
- DEBUG("%p: removing TX queue %p from list",
- (void *)priv->dev, (void *)txq);
- (*priv->txqs)[i] = NULL;
- break;
- }
- txq_cleanup(txq);
- rte_free(txq);
- priv_unlock(priv);
-}
-
-/* RX queues handling. */
-
-/**
- * Allocate RX queue elements with scattered packets support.
- *
- * @param rxq
- * Pointer to RX queue structure.
- * @param elts_n
- * Number of elements to allocate.
- * @param[in] pool
- * If not NULL, fetch buffers from this array instead of allocating them
- * with rte_pktmbuf_alloc().
- *
- * @return
- * 0 on success, errno value on failure.
- */
-static int
-rxq_alloc_elts_sp(struct rxq *rxq, unsigned int elts_n,
- struct rte_mbuf **pool)
-{
- unsigned int i;
- struct rxq_elt_sp (*elts)[elts_n] =
- rte_calloc_socket("RXQ elements", 1, sizeof(*elts), 0,
- rxq->socket);
- int ret = 0;
-
- if (elts == NULL) {
- ERROR("%p: can't allocate packets array", (void *)rxq);
- ret = ENOMEM;
- goto error;
- }
- /* For each WR (packet). */
- for (i = 0; (i != elts_n); ++i) {
- unsigned int j;
- struct rxq_elt_sp *elt = &(*elts)[i];
- struct ibv_recv_wr *wr = &elt->wr;
- struct ibv_sge (*sges)[(elemof(elt->sges))] = &elt->sges;
-
- /* These two arrays must have the same size. */
- assert(elemof(elt->sges) == elemof(elt->bufs));
- /* Configure WR. */
- wr->wr_id = i;
- wr->next = &(*elts)[(i + 1)].wr;
- wr->sg_list = &(*sges)[0];
- wr->num_sge = elemof(*sges);
- /* For each SGE (segment). */
- for (j = 0; (j != elemof(elt->bufs)); ++j) {
- struct ibv_sge *sge = &(*sges)[j];
- struct rte_mbuf *buf;
-
- if (pool != NULL) {
- buf = *(pool++);
- assert(buf != NULL);
- rte_pktmbuf_reset(buf);
- } else
- buf = rte_pktmbuf_alloc(rxq->mp);
- if (buf == NULL) {
- assert(pool == NULL);
- ERROR("%p: empty mbuf pool", (void *)rxq);
- ret = ENOMEM;
- goto error;
- }
- elt->bufs[j] = buf;
- /* Headroom is reserved by rte_pktmbuf_alloc(). */
- assert(DATA_OFF(buf) == RTE_PKTMBUF_HEADROOM);
- /* Buffer is supposed to be empty. */
- assert(rte_pktmbuf_data_len(buf) == 0);
- assert(rte_pktmbuf_pkt_len(buf) == 0);
- /* sge->addr must be able to store a pointer. */
- assert(sizeof(sge->addr) >= sizeof(uintptr_t));
- if (j == 0) {
- /* The first SGE keeps its headroom. */
- sge->addr = rte_pktmbuf_mtod(buf, uintptr_t);
- sge->length = (buf->buf_len -
- RTE_PKTMBUF_HEADROOM);
- } else {
- /* Subsequent SGEs lose theirs. */
- assert(DATA_OFF(buf) == RTE_PKTMBUF_HEADROOM);
- SET_DATA_OFF(buf, 0);
- sge->addr = (uintptr_t)buf->buf_addr;
- sge->length = buf->buf_len;
- }
- sge->lkey = rxq->mr->lkey;
- /* Redundant check for tailroom. */
- assert(sge->length == rte_pktmbuf_tailroom(buf));
- }
- }
- /* The last WR pointer must be NULL. */
- (*elts)[(i - 1)].wr.next = NULL;
- DEBUG("%p: allocated and configured %u WRs (%zu segments)",
- (void *)rxq, elts_n, (elts_n * elemof((*elts)[0].sges)));
- rxq->elts_n = elts_n;
- rxq->elts_head = 0;
- rxq->elts.sp = elts;
- assert(ret == 0);
- return 0;
-error:
- if (elts != NULL) {
- assert(pool == NULL);
- for (i = 0; (i != elemof(*elts)); ++i) {
- unsigned int j;
- struct rxq_elt_sp *elt = &(*elts)[i];
-
- for (j = 0; (j != elemof(elt->bufs)); ++j) {
- struct rte_mbuf *buf = elt->bufs[j];
-
- if (buf != NULL)
- rte_pktmbuf_free_seg(buf);
- }
- }
- rte_free(elts);
- }
- DEBUG("%p: failed, freed everything", (void *)rxq);
- assert(ret > 0);
- return ret;
-}
-
-/**
- * Free RX queue elements with scattered packets support.
- *
- * @param rxq
- * Pointer to RX queue structure.
- */
-static void
-rxq_free_elts_sp(struct rxq *rxq)
-{
- unsigned int i;
- unsigned int elts_n = rxq->elts_n;
- struct rxq_elt_sp (*elts)[elts_n] = rxq->elts.sp;
-
- DEBUG("%p: freeing WRs", (void *)rxq);
- rxq->elts_n = 0;
- rxq->elts.sp = NULL;
- if (elts == NULL)
- return;
- for (i = 0; (i != elemof(*elts)); ++i) {
- unsigned int j;
- struct rxq_elt_sp *elt = &(*elts)[i];
-
- for (j = 0; (j != elemof(elt->bufs)); ++j) {
- struct rte_mbuf *buf = elt->bufs[j];
-
- if (buf != NULL)
- rte_pktmbuf_free_seg(buf);
- }
- }
- rte_free(elts);
-}
-
-/**
- * Allocate RX queue elements.
- *
- * @param rxq
- * Pointer to RX queue structure.
- * @param elts_n
- * Number of elements to allocate.
- * @param[in] pool
- * If not NULL, fetch buffers from this array instead of allocating them
- * with rte_pktmbuf_alloc().
- *
- * @return
- * 0 on success, errno value on failure.
- */
-static int
-rxq_alloc_elts(struct rxq *rxq, unsigned int elts_n, struct rte_mbuf **pool)
-{
- unsigned int i;
- struct rxq_elt (*elts)[elts_n] =
- rte_calloc_socket("RXQ elements", 1, sizeof(*elts), 0,
- rxq->socket);
- int ret = 0;
-
- if (elts == NULL) {
- ERROR("%p: can't allocate packets array", (void *)rxq);
- ret = ENOMEM;
- goto error;
- }
- /* For each WR (packet). */
- for (i = 0; (i != elts_n); ++i) {
- struct rxq_elt *elt = &(*elts)[i];
- struct ibv_recv_wr *wr = &elt->wr;
- struct ibv_sge *sge = &(*elts)[i].sge;
- struct rte_mbuf *buf;
-
- if (pool != NULL) {
- buf = *(pool++);
- assert(buf != NULL);
- rte_pktmbuf_reset(buf);
- } else
- buf = rte_pktmbuf_alloc(rxq->mp);
- if (buf == NULL) {
- assert(pool == NULL);
- ERROR("%p: empty mbuf pool", (void *)rxq);
- ret = ENOMEM;
- goto error;
- }
- /* Configure WR. Work request ID contains its own index in
- * the elts array and the offset between SGE buffer header and
- * its data. */
- WR_ID(wr->wr_id).id = i;
- WR_ID(wr->wr_id).offset =
- (((uintptr_t)buf->buf_addr + RTE_PKTMBUF_HEADROOM) -
- (uintptr_t)buf);
- wr->next = &(*elts)[(i + 1)].wr;
- wr->sg_list = sge;
- wr->num_sge = 1;
- /* Headroom is reserved by rte_pktmbuf_alloc(). */
- assert(DATA_OFF(buf) == RTE_PKTMBUF_HEADROOM);
- /* Buffer is supposed to be empty. */
- assert(rte_pktmbuf_data_len(buf) == 0);
- assert(rte_pktmbuf_pkt_len(buf) == 0);
- /* sge->addr must be able to store a pointer. */
- assert(sizeof(sge->addr) >= sizeof(uintptr_t));
- /* SGE keeps its headroom. */
- sge->addr = (uintptr_t)
- ((uint8_t *)buf->buf_addr + RTE_PKTMBUF_HEADROOM);
- sge->length = (buf->buf_len - RTE_PKTMBUF_HEADROOM);
- sge->lkey = rxq->mr->lkey;
- /* Redundant check for tailroom. */
- assert(sge->length == rte_pktmbuf_tailroom(buf));
- /* Make sure elts index and SGE mbuf pointer can be deduced
- * from WR ID. */
- if ((WR_ID(wr->wr_id).id != i) ||
- ((void *)((uintptr_t)sge->addr -
- WR_ID(wr->wr_id).offset) != buf)) {
- ERROR("%p: cannot store index and offset in WR ID",
- (void *)rxq);
- sge->addr = 0;
- rte_pktmbuf_free(buf);
- ret = EOVERFLOW;
- goto error;
- }
- }
- /* The last WR pointer must be NULL. */
- (*elts)[(i - 1)].wr.next = NULL;
- DEBUG("%p: allocated and configured %u single-segment WRs",
- (void *)rxq, elts_n);
- rxq->elts_n = elts_n;
- rxq->elts_head = 0;
- rxq->elts.no_sp = elts;
- assert(ret == 0);
- return 0;
-error:
- if (elts != NULL) {
- assert(pool == NULL);
- for (i = 0; (i != elemof(*elts)); ++i) {
- struct rxq_elt *elt = &(*elts)[i];
- struct rte_mbuf *buf;
-
- if (elt->sge.addr == 0)
- continue;
- assert(WR_ID(elt->wr.wr_id).id == i);
- buf = (void *)((uintptr_t)elt->sge.addr -
- WR_ID(elt->wr.wr_id).offset);
- rte_pktmbuf_free_seg(buf);
- }
- rte_free(elts);
- }
- DEBUG("%p: failed, freed everything", (void *)rxq);
- assert(ret > 0);
- return ret;
-}
-
-/**
- * Free RX queue elements.
- *
- * @param rxq
- * Pointer to RX queue structure.
- */
-static void
-rxq_free_elts(struct rxq *rxq)
-{
- unsigned int i;
- unsigned int elts_n = rxq->elts_n;
- struct rxq_elt (*elts)[elts_n] = rxq->elts.no_sp;
-
- DEBUG("%p: freeing WRs", (void *)rxq);
- rxq->elts_n = 0;
- rxq->elts.no_sp = NULL;
- if (elts == NULL)
- return;
- for (i = 0; (i != elemof(*elts)); ++i) {
- struct rxq_elt *elt = &(*elts)[i];
- struct rte_mbuf *buf;
-
- if (elt->sge.addr == 0)
- continue;
- assert(WR_ID(elt->wr.wr_id).id == i);
- buf = (void *)((uintptr_t)elt->sge.addr -
- WR_ID(elt->wr.wr_id).offset);
- rte_pktmbuf_free_seg(buf);
- }
- rte_free(elts);
-}
-
-/**
- * Unregister a MAC address.
- *
- * @param priv
- * Pointer to private structure.
- */
-static void
-priv_mac_addr_del(struct priv *priv)
-{
-#ifndef NDEBUG
- uint8_t (*mac)[ETHER_ADDR_LEN] = &priv->mac.addr_bytes;
-#endif
-
- if (!priv->mac_flow)
- return;
- DEBUG("%p: removing MAC address %02x:%02x:%02x:%02x:%02x:%02x",
- (void *)priv,
- (*mac)[0], (*mac)[1], (*mac)[2], (*mac)[3], (*mac)[4], (*mac)[5]);
- claim_zero(ibv_destroy_flow(priv->mac_flow));
- priv->mac_flow = NULL;
-}
-
-/**
- * Register a MAC address.
- *
- * In RSS mode, the MAC address is registered in the parent queue,
- * otherwise it is registered in queue 0.
- *
- * @param priv
- * Pointer to private structure.
- *
- * @return
- * 0 on success, errno value on failure.
- */
-static int
-priv_mac_addr_add(struct priv *priv)
-{
- uint8_t (*mac)[ETHER_ADDR_LEN] = &priv->mac.addr_bytes;
- struct rxq *rxq;
- struct ibv_flow *flow;
-
- /* If device isn't started, this is all we need to do. */
- if (!priv->started)
- return 0;
- if (priv->isolated)
- return 0;
- if (priv->rss)
- rxq = &priv->rxq_parent;
- else if (*priv->rxqs && (*priv->rxqs)[0])
- rxq = (*priv->rxqs)[0];
- else
- return 0;
-
- /* Allocate flow specification on the stack. */
- struct __attribute__((packed)) {
- struct ibv_flow_attr attr;
- struct ibv_flow_spec_eth spec;
- } data;
- struct ibv_flow_attr *attr = &data.attr;
- struct ibv_flow_spec_eth *spec = &data.spec;
-
- if (priv->mac_flow)
- priv_mac_addr_del(priv);
- /*
- * No padding must be inserted by the compiler between attr and spec.
- * This layout is expected by libibverbs.
- */
- assert(((uint8_t *)attr + sizeof(*attr)) == (uint8_t *)spec);
- *attr = (struct ibv_flow_attr){
- .type = IBV_FLOW_ATTR_NORMAL,
- .priority = 3,
- .num_of_specs = 1,
- .port = priv->port,
- .flags = 0
- };
- *spec = (struct ibv_flow_spec_eth){
- .type = IBV_FLOW_SPEC_ETH,
- .size = sizeof(*spec),
- .val = {
- .dst_mac = {
- (*mac)[0], (*mac)[1], (*mac)[2],
- (*mac)[3], (*mac)[4], (*mac)[5]
- },
- },
- .mask = {
- .dst_mac = "\xff\xff\xff\xff\xff\xff",
- }
- };
- DEBUG("%p: adding MAC address %02x:%02x:%02x:%02x:%02x:%02x",
- (void *)priv,
- (*mac)[0], (*mac)[1], (*mac)[2], (*mac)[3], (*mac)[4], (*mac)[5]);
- /* Create related flow. */
- errno = 0;
- flow = ibv_create_flow(rxq->qp, attr);
- if (flow == NULL) {
- /* It's not clear whether errno is always set in this case. */
- ERROR("%p: flow configuration failed, errno=%d: %s",
- (void *)rxq, errno,
- (errno ? strerror(errno) : "Unknown error"));
- if (errno)
- return errno;
- return EINVAL;
- }
- assert(priv->mac_flow == NULL);
- priv->mac_flow = flow;
- return 0;
-}
-
-/**
- * Clean up a RX queue.
- *
- * Destroy objects, free allocated memory and reset the structure for reuse.
- *
- * @param rxq
- * Pointer to RX queue structure.
- */
-static void
-rxq_cleanup(struct rxq *rxq)
-{
- struct ibv_exp_release_intf_params params;
-
- DEBUG("cleaning up %p", (void *)rxq);
- if (rxq->sp)
- rxq_free_elts_sp(rxq);
- else
- rxq_free_elts(rxq);
- if (rxq->if_qp != NULL) {
- assert(rxq->priv != NULL);
- assert(rxq->priv->ctx != NULL);
- assert(rxq->qp != NULL);
- params = (struct ibv_exp_release_intf_params){
- .comp_mask = 0,
- };
- claim_zero(ibv_exp_release_intf(rxq->priv->ctx,
- rxq->if_qp,
- ¶ms));
- }
- if (rxq->if_cq != NULL) {
- assert(rxq->priv != NULL);
- assert(rxq->priv->ctx != NULL);
- assert(rxq->cq != NULL);
- params = (struct ibv_exp_release_intf_params){
- .comp_mask = 0,
- };
- claim_zero(ibv_exp_release_intf(rxq->priv->ctx,
- rxq->if_cq,
- ¶ms));
- }
- if (rxq->qp != NULL)
- claim_zero(ibv_destroy_qp(rxq->qp));
- if (rxq->cq != NULL)
- claim_zero(ibv_destroy_cq(rxq->cq));
- if (rxq->channel != NULL)
- claim_zero(ibv_destroy_comp_channel(rxq->channel));
- if (rxq->rd != NULL) {
- struct ibv_exp_destroy_res_domain_attr attr = {
- .comp_mask = 0,
- };
-
- assert(rxq->priv != NULL);
- assert(rxq->priv->ctx != NULL);
- claim_zero(ibv_exp_destroy_res_domain(rxq->priv->ctx,
- rxq->rd,
- &attr));
- }
- if (rxq->mr != NULL)
- claim_zero(ibv_dereg_mr(rxq->mr));
- memset(rxq, 0, sizeof(*rxq));
-}
-
-/**
- * Translate RX completion flags to packet type.
- *
- * @param flags
- * RX completion flags returned by poll_length_flags().
- *
- * @note: fix mlx4_dev_supported_ptypes_get() if any change here.
- *
- * @return
- * Packet type for struct rte_mbuf.
- */
-static inline uint32_t
-rxq_cq_to_pkt_type(uint32_t flags)
-{
- uint32_t pkt_type;
-
- if (flags & IBV_EXP_CQ_RX_TUNNEL_PACKET)
- pkt_type =
- TRANSPOSE(flags,
- IBV_EXP_CQ_RX_OUTER_IPV4_PACKET,
- RTE_PTYPE_L3_IPV4_EXT_UNKNOWN) |
- TRANSPOSE(flags,
- IBV_EXP_CQ_RX_OUTER_IPV6_PACKET,
- RTE_PTYPE_L3_IPV6_EXT_UNKNOWN) |
- TRANSPOSE(flags,
- IBV_EXP_CQ_RX_IPV4_PACKET,
- RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN) |
- TRANSPOSE(flags,
- IBV_EXP_CQ_RX_IPV6_PACKET,
- RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN);
- else
- pkt_type =
- TRANSPOSE(flags,
- IBV_EXP_CQ_RX_IPV4_PACKET,
- RTE_PTYPE_L3_IPV4_EXT_UNKNOWN) |
- TRANSPOSE(flags,
- IBV_EXP_CQ_RX_IPV6_PACKET,
- RTE_PTYPE_L3_IPV6_EXT_UNKNOWN);
- return pkt_type;
-}
-
-/**
- * Translate RX completion flags to offload flags.
- *
- * @param[in] rxq
- * Pointer to RX queue structure.
- * @param flags
- * RX completion flags returned by poll_length_flags().
- *
- * @return
- * Offload flags (ol_flags) for struct rte_mbuf.
- */
-static inline uint32_t
-rxq_cq_to_ol_flags(const struct rxq *rxq, uint32_t flags)
-{
- uint32_t ol_flags = 0;
-
- if (rxq->csum)
- ol_flags |=
- TRANSPOSE(flags,
- IBV_EXP_CQ_RX_IP_CSUM_OK,
- PKT_RX_IP_CKSUM_GOOD) |
- TRANSPOSE(flags,
- IBV_EXP_CQ_RX_TCP_UDP_CSUM_OK,
- PKT_RX_L4_CKSUM_GOOD);
- if ((flags & IBV_EXP_CQ_RX_TUNNEL_PACKET) && (rxq->csum_l2tun))
- ol_flags |=
- TRANSPOSE(flags,
- IBV_EXP_CQ_RX_OUTER_IP_CSUM_OK,
- PKT_RX_IP_CKSUM_GOOD) |
- TRANSPOSE(flags,
- IBV_EXP_CQ_RX_OUTER_TCP_UDP_CSUM_OK,
- PKT_RX_L4_CKSUM_GOOD);
- return ol_flags;
-}
-
-static uint16_t
-mlx4_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n);
-
-/**
- * DPDK callback for RX with scattered packets support.
- *
- * @param dpdk_rxq
- * Generic pointer to RX queue structure.
- * @param[out] pkts
- * Array to store received packets.
- * @param pkts_n
- * Maximum number of packets in array.
- *
- * @return
- * Number of packets successfully received (<= pkts_n).
- */
-static uint16_t
-mlx4_rx_burst_sp(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
-{
- struct rxq *rxq = (struct rxq *)dpdk_rxq;
- struct rxq_elt_sp (*elts)[rxq->elts_n] = rxq->elts.sp;
- const unsigned int elts_n = rxq->elts_n;
- unsigned int elts_head = rxq->elts_head;
- struct ibv_recv_wr head;
- struct ibv_recv_wr **next = &head.next;
- struct ibv_recv_wr *bad_wr;
- unsigned int i;
- unsigned int pkts_ret = 0;
- int ret;
-
- if (unlikely(!rxq->sp))
- return mlx4_rx_burst(dpdk_rxq, pkts, pkts_n);
- if (unlikely(elts == NULL)) /* See RTE_DEV_CMD_SET_MTU. */
- return 0;
- for (i = 0; (i != pkts_n); ++i) {
- struct rxq_elt_sp *elt = &(*elts)[elts_head];
- struct ibv_recv_wr *wr = &elt->wr;
- uint64_t wr_id = wr->wr_id;
- unsigned int len;
- unsigned int pkt_buf_len;
- struct rte_mbuf *pkt_buf = NULL; /* Buffer returned in pkts. */
- struct rte_mbuf **pkt_buf_next = &pkt_buf;
- unsigned int seg_headroom = RTE_PKTMBUF_HEADROOM;
- unsigned int j = 0;
- uint32_t flags;
-
- /* Sanity checks. */
-#ifdef NDEBUG
- (void)wr_id;
-#endif
- assert(wr_id < rxq->elts_n);
- assert(wr->sg_list == elt->sges);
- assert(wr->num_sge == elemof(elt->sges));
- assert(elts_head < rxq->elts_n);
- assert(rxq->elts_head < rxq->elts_n);
- ret = rxq->if_cq->poll_length_flags(rxq->cq, NULL, NULL,
- &flags);
- if (unlikely(ret < 0)) {
- struct ibv_wc wc;
- int wcs_n;
-
- DEBUG("rxq=%p, poll_length() failed (ret=%d)",
- (void *)rxq, ret);
- /* ibv_poll_cq() must be used in case of failure. */
- wcs_n = ibv_poll_cq(rxq->cq, 1, &wc);
- if (unlikely(wcs_n == 0))
- break;
- if (unlikely(wcs_n < 0)) {
- DEBUG("rxq=%p, ibv_poll_cq() failed (wcs_n=%d)",
- (void *)rxq, wcs_n);
- break;
- }
- assert(wcs_n == 1);
- if (unlikely(wc.status != IBV_WC_SUCCESS)) {
- /* Whatever, just repost the offending WR. */
- DEBUG("rxq=%p, wr_id=%" PRIu64 ": bad work"
- " completion status (%d): %s",
- (void *)rxq, wc.wr_id, wc.status,
- ibv_wc_status_str(wc.status));
- /* Increment dropped packets counter. */
- ++rxq->stats.idropped;
- /* Link completed WRs together for repost. */
- *next = wr;
- next = &wr->next;
- goto repost;
- }
- ret = wc.byte_len;
- }
- if (ret == 0)
- break;
- len = ret;
- pkt_buf_len = len;
- /* Link completed WRs together for repost. */
- *next = wr;
- next = &wr->next;
- /*
- * Replace spent segments with new ones, concatenate and
- * return them as pkt_buf.
- */
- while (1) {
- struct ibv_sge *sge = &elt->sges[j];
- struct rte_mbuf *seg = elt->bufs[j];
- struct rte_mbuf *rep;
- unsigned int seg_tailroom;
-
- /*
- * Fetch initial bytes of packet descriptor into a
- * cacheline while allocating rep.
- */
- rte_prefetch0(seg);
- rep = rte_mbuf_raw_alloc(rxq->mp);
- if (unlikely(rep == NULL)) {
- /*
- * Unable to allocate a replacement mbuf,
- * repost WR.
- */
- DEBUG("rxq=%p, wr_id=%" PRIu64 ":"
- " can't allocate a new mbuf",
- (void *)rxq, wr_id);
- if (pkt_buf != NULL) {
- *pkt_buf_next = NULL;
- rte_pktmbuf_free(pkt_buf);
- }
- /* Increase out of memory counters. */
- ++rxq->stats.rx_nombuf;
- ++rxq->priv->dev->data->rx_mbuf_alloc_failed;
- goto repost;
- }
-#ifndef NDEBUG
- /* Poison user-modifiable fields in rep. */
- NEXT(rep) = (void *)((uintptr_t)-1);
- SET_DATA_OFF(rep, 0xdead);
- DATA_LEN(rep) = 0xd00d;
- PKT_LEN(rep) = 0xdeadd00d;
- NB_SEGS(rep) = 0x2a;
- PORT(rep) = 0x2a;
- rep->ol_flags = -1;
- /*
- * Clear special flags in mbuf to avoid
- * crashing while freeing.
- */
- rep->ol_flags &=
- ~(uint64_t)(IND_ATTACHED_MBUF |
- CTRL_MBUF_FLAG);
-#endif
- assert(rep->buf_len == seg->buf_len);
- /* Reconfigure sge to use rep instead of seg. */
- assert(sge->lkey == rxq->mr->lkey);
- sge->addr = ((uintptr_t)rep->buf_addr + seg_headroom);
- elt->bufs[j] = rep;
- ++j;
- /* Update pkt_buf if it's the first segment, or link
- * seg to the previous one and update pkt_buf_next. */
- *pkt_buf_next = seg;
- pkt_buf_next = &NEXT(seg);
- /* Update seg information. */
- seg_tailroom = (seg->buf_len - seg_headroom);
- assert(sge->length == seg_tailroom);
- SET_DATA_OFF(seg, seg_headroom);
- if (likely(len <= seg_tailroom)) {
- /* Last segment. */
- DATA_LEN(seg) = len;
- PKT_LEN(seg) = len;
- /* Sanity check. */
- assert(rte_pktmbuf_headroom(seg) ==
- seg_headroom);
- assert(rte_pktmbuf_tailroom(seg) ==
- (seg_tailroom - len));
- break;
- }
- DATA_LEN(seg) = seg_tailroom;
- PKT_LEN(seg) = seg_tailroom;
- /* Sanity check. */
- assert(rte_pktmbuf_headroom(seg) == seg_headroom);
- assert(rte_pktmbuf_tailroom(seg) == 0);
- /* Fix len and clear headroom for next segments. */
- len -= seg_tailroom;
- seg_headroom = 0;
- }
- /* Update head and tail segments. */
- *pkt_buf_next = NULL;
- assert(pkt_buf != NULL);
- assert(j != 0);
- NB_SEGS(pkt_buf) = j;
- PORT(pkt_buf) = rxq->port_id;
- PKT_LEN(pkt_buf) = pkt_buf_len;
- pkt_buf->packet_type = rxq_cq_to_pkt_type(flags);
- pkt_buf->ol_flags = rxq_cq_to_ol_flags(rxq, flags);
-
- /* Return packet. */
- *(pkts++) = pkt_buf;
- ++pkts_ret;
- /* Increase bytes counter. */
- rxq->stats.ibytes += pkt_buf_len;
-repost:
- if (++elts_head >= elts_n)
- elts_head = 0;
- continue;
- }
- if (unlikely(i == 0))
- return 0;
- *next = NULL;
- /* Repost WRs. */
- ret = ibv_post_recv(rxq->qp, head.next, &bad_wr);
- if (unlikely(ret)) {
- /* Inability to repost WRs is fatal. */
- DEBUG("%p: ibv_post_recv(): failed for WR %p: %s",
- (void *)rxq->priv,
- (void *)bad_wr,
- strerror(ret));
- abort();
- }
- rxq->elts_head = elts_head;
- /* Increase packets counter. */
- rxq->stats.ipackets += pkts_ret;
- return pkts_ret;
-}
-
-/**
- * DPDK callback for RX.
- *
- * The following function is the same as mlx4_rx_burst_sp(), except it doesn't
- * manage scattered packets. Improves performance when MRU is lower than the
- * size of the first segment.
- *
- * @param dpdk_rxq
- * Generic pointer to RX queue structure.
- * @param[out] pkts
- * Array to store received packets.
- * @param pkts_n
- * Maximum number of packets in array.
- *
- * @return
- * Number of packets successfully received (<= pkts_n).
- */
-static uint16_t
-mlx4_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
-{
- struct rxq *rxq = (struct rxq *)dpdk_rxq;
- struct rxq_elt (*elts)[rxq->elts_n] = rxq->elts.no_sp;
- const unsigned int elts_n = rxq->elts_n;
- unsigned int elts_head = rxq->elts_head;
- struct ibv_sge sges[pkts_n];
- unsigned int i;
- unsigned int pkts_ret = 0;
- int ret;
-
- if (unlikely(rxq->sp))
- return mlx4_rx_burst_sp(dpdk_rxq, pkts, pkts_n);
- for (i = 0; (i != pkts_n); ++i) {
- struct rxq_elt *elt = &(*elts)[elts_head];
- struct ibv_recv_wr *wr = &elt->wr;
- uint64_t wr_id = wr->wr_id;
- unsigned int len;
- struct rte_mbuf *seg = (void *)((uintptr_t)elt->sge.addr -
- WR_ID(wr_id).offset);
- struct rte_mbuf *rep;
- uint32_t flags;
-
- /* Sanity checks. */
- assert(WR_ID(wr_id).id < rxq->elts_n);
- assert(wr->sg_list == &elt->sge);
- assert(wr->num_sge == 1);
- assert(elts_head < rxq->elts_n);
- assert(rxq->elts_head < rxq->elts_n);
- /*
- * Fetch initial bytes of packet descriptor into a
- * cacheline while allocating rep.
- */
- rte_mbuf_prefetch_part1(seg);
- rte_mbuf_prefetch_part2(seg);
- ret = rxq->if_cq->poll_length_flags(rxq->cq, NULL, NULL,
- &flags);
- if (unlikely(ret < 0)) {
- struct ibv_wc wc;
- int wcs_n;
-
- DEBUG("rxq=%p, poll_length() failed (ret=%d)",
- (void *)rxq, ret);
- /* ibv_poll_cq() must be used in case of failure. */
- wcs_n = ibv_poll_cq(rxq->cq, 1, &wc);
- if (unlikely(wcs_n == 0))
- break;
- if (unlikely(wcs_n < 0)) {
- DEBUG("rxq=%p, ibv_poll_cq() failed (wcs_n=%d)",
- (void *)rxq, wcs_n);
- break;
- }
- assert(wcs_n == 1);
- if (unlikely(wc.status != IBV_WC_SUCCESS)) {
- /* Whatever, just repost the offending WR. */
- DEBUG("rxq=%p, wr_id=%" PRIu64 ": bad work"
- " completion status (%d): %s",
- (void *)rxq, wc.wr_id, wc.status,
- ibv_wc_status_str(wc.status));
- /* Increment dropped packets counter. */
- ++rxq->stats.idropped;
- /* Add SGE to array for repost. */
- sges[i] = elt->sge;
- goto repost;
- }
- ret = wc.byte_len;
- }
- if (ret == 0)
- break;
- len = ret;
- rep = rte_mbuf_raw_alloc(rxq->mp);
- if (unlikely(rep == NULL)) {
- /*
- * Unable to allocate a replacement mbuf,
- * repost WR.
- */
- DEBUG("rxq=%p, wr_id=%" PRIu32 ":"
- " can't allocate a new mbuf",
- (void *)rxq, WR_ID(wr_id).id);
- /* Increase out of memory counters. */
- ++rxq->stats.rx_nombuf;
- ++rxq->priv->dev->data->rx_mbuf_alloc_failed;
- /* Add SGE to array for repost. */
- sges[i] = elt->sge;
- goto repost;
- }
-
- /* Reconfigure sge to use rep instead of seg. */
- elt->sge.addr = (uintptr_t)rep->buf_addr + RTE_PKTMBUF_HEADROOM;
- assert(elt->sge.lkey == rxq->mr->lkey);
- WR_ID(wr->wr_id).offset =
- (((uintptr_t)rep->buf_addr + RTE_PKTMBUF_HEADROOM) -
- (uintptr_t)rep);
- assert(WR_ID(wr->wr_id).id == WR_ID(wr_id).id);
-
- /* Add SGE to array for repost. */
- sges[i] = elt->sge;
-
- /* Update seg information. */
- SET_DATA_OFF(seg, RTE_PKTMBUF_HEADROOM);
- NB_SEGS(seg) = 1;
- PORT(seg) = rxq->port_id;
- NEXT(seg) = NULL;
- PKT_LEN(seg) = len;
- DATA_LEN(seg) = len;
- seg->packet_type = rxq_cq_to_pkt_type(flags);
- seg->ol_flags = rxq_cq_to_ol_flags(rxq, flags);
-
- /* Return packet. */
- *(pkts++) = seg;
- ++pkts_ret;
- /* Increase bytes counter. */
- rxq->stats.ibytes += len;
-repost:
- if (++elts_head >= elts_n)
- elts_head = 0;
- continue;
- }
- if (unlikely(i == 0))
- return 0;
- /* Repost WRs. */
- ret = rxq->if_qp->recv_burst(rxq->qp, sges, i);
- if (unlikely(ret)) {
- /* Inability to repost WRs is fatal. */
- DEBUG("%p: recv_burst(): failed (ret=%d)",
- (void *)rxq->priv,
- ret);
- abort();
- }
- rxq->elts_head = elts_head;
- /* Increase packets counter. */
- rxq->stats.ipackets += pkts_ret;
- return pkts_ret;
-}
-
-/**
- * Allocate a Queue Pair.
- * Optionally setup inline receive if supported.
- *
- * @param priv
- * Pointer to private structure.
- * @param cq
- * Completion queue to associate with QP.
- * @param desc
- * Number of descriptors in QP (hint only).
- *
- * @return
- * QP pointer or NULL in case of error.
- */
-static struct ibv_qp *
-rxq_setup_qp(struct priv *priv, struct ibv_cq *cq, uint16_t desc,
- struct ibv_exp_res_domain *rd)
-{
- struct ibv_exp_qp_init_attr attr = {
- /* CQ to be associated with the send queue. */
- .send_cq = cq,
- /* CQ to be associated with the receive queue. */
- .recv_cq = cq,
- .cap = {
- /* Max number of outstanding WRs. */
- .max_recv_wr = ((priv->device_attr.max_qp_wr < desc) ?
- priv->device_attr.max_qp_wr :
- desc),
- /* Max number of scatter/gather elements in a WR. */
- .max_recv_sge = ((priv->device_attr.max_sge <
- MLX4_PMD_SGE_WR_N) ?
- priv->device_attr.max_sge :
- MLX4_PMD_SGE_WR_N),
- },
- .qp_type = IBV_QPT_RAW_PACKET,
- .comp_mask = (IBV_EXP_QP_INIT_ATTR_PD |
- IBV_EXP_QP_INIT_ATTR_RES_DOMAIN),
- .pd = priv->pd,
- .res_domain = rd,
- };
-
- attr.max_inl_recv = priv->inl_recv_size;
- attr.comp_mask |= IBV_EXP_QP_INIT_ATTR_INL_RECV;
- return ibv_exp_create_qp(priv->ctx, &attr);
-}
-
-/**
- * Allocate a RSS Queue Pair.
- * Optionally setup inline receive if supported.
- *
- * @param priv
- * Pointer to private structure.
- * @param cq
- * Completion queue to associate with QP.
- * @param desc
- * Number of descriptors in QP (hint only).
- * @param parent
- * If nonzero, create a parent QP, otherwise a child.
- *
- * @return
- * QP pointer or NULL in case of error.
- */
-static struct ibv_qp *
-rxq_setup_qp_rss(struct priv *priv, struct ibv_cq *cq, uint16_t desc,
- int parent, struct ibv_exp_res_domain *rd)
-{
- struct ibv_exp_qp_init_attr attr = {
- /* CQ to be associated with the send queue. */
- .send_cq = cq,
- /* CQ to be associated with the receive queue. */
- .recv_cq = cq,
- .cap = {
- /* Max number of outstanding WRs. */
- .max_recv_wr = ((priv->device_attr.max_qp_wr < desc) ?
- priv->device_attr.max_qp_wr :
- desc),
- /* Max number of scatter/gather elements in a WR. */
- .max_recv_sge = ((priv->device_attr.max_sge <
- MLX4_PMD_SGE_WR_N) ?
- priv->device_attr.max_sge :
- MLX4_PMD_SGE_WR_N),
- },
- .qp_type = IBV_QPT_RAW_PACKET,
- .comp_mask = (IBV_EXP_QP_INIT_ATTR_PD |
- IBV_EXP_QP_INIT_ATTR_RES_DOMAIN |
- IBV_EXP_QP_INIT_ATTR_QPG),
- .pd = priv->pd,
- .res_domain = rd,
- };
-
- attr.max_inl_recv = priv->inl_recv_size,
- attr.comp_mask |= IBV_EXP_QP_INIT_ATTR_INL_RECV;
- if (parent) {
- attr.qpg.qpg_type = IBV_EXP_QPG_PARENT;
- /* TSS isn't necessary. */
- attr.qpg.parent_attrib.tss_child_count = 0;
- attr.qpg.parent_attrib.rss_child_count =
- rte_align32pow2(priv->rxqs_n + 1) >> 1;
- DEBUG("initializing parent RSS queue");
- } else {
- attr.qpg.qpg_type = IBV_EXP_QPG_CHILD_RX;
- attr.qpg.qpg_parent = priv->rxq_parent.qp;
- DEBUG("initializing child RSS queue");
- }
- return ibv_exp_create_qp(priv->ctx, &attr);
-}
-
-/**
- * Reconfigure a RX queue with new parameters.
- *
- * rxq_rehash() does not allocate mbufs, which, if not done from the right
- * thread (such as a control thread), may corrupt the pool.
- * In case of failure, the queue is left untouched.
- *
- * @param dev
- * Pointer to Ethernet device structure.
- * @param rxq
- * RX queue pointer.
- *
- * @return
- * 0 on success, errno value on failure.
- */
-static int
-rxq_rehash(struct rte_eth_dev *dev, struct rxq *rxq)
-{
- struct priv *priv = rxq->priv;
- struct rxq tmpl = *rxq;
- unsigned int mbuf_n;
- unsigned int desc_n;
- struct rte_mbuf **pool;
- unsigned int i, k;
- struct ibv_exp_qp_attr mod;
- struct ibv_recv_wr *bad_wr;
- unsigned int mb_len;
- int err;
- int parent = (rxq == &priv->rxq_parent);
-
- if (parent) {
- ERROR("%p: cannot rehash parent queue %p",
- (void *)dev, (void *)rxq);
- return EINVAL;
- }
- mb_len = rte_pktmbuf_data_room_size(rxq->mp);
- DEBUG("%p: rehashing queue %p", (void *)dev, (void *)rxq);
- /* Number of descriptors and mbufs currently allocated. */
- desc_n = (tmpl.elts_n * (tmpl.sp ? MLX4_PMD_SGE_WR_N : 1));
- mbuf_n = desc_n;
- /* Toggle RX checksum offload if hardware supports it. */
- if (priv->hw_csum) {
- tmpl.csum = !!dev->data->dev_conf.rxmode.hw_ip_checksum;
- rxq->csum = tmpl.csum;
- }
- if (priv->hw_csum_l2tun) {
- tmpl.csum_l2tun = !!dev->data->dev_conf.rxmode.hw_ip_checksum;
- rxq->csum_l2tun = tmpl.csum_l2tun;
- }
- /* Enable scattered packets support for this queue if necessary. */
- assert(mb_len >= RTE_PKTMBUF_HEADROOM);
- if (dev->data->dev_conf.rxmode.enable_scatter &&
- (dev->data->dev_conf.rxmode.max_rx_pkt_len >
- (mb_len - RTE_PKTMBUF_HEADROOM))) {
- tmpl.sp = 1;
- desc_n /= MLX4_PMD_SGE_WR_N;
- } else
- tmpl.sp = 0;
- DEBUG("%p: %s scattered packets support (%u WRs)",
- (void *)dev, (tmpl.sp ? "enabling" : "disabling"), desc_n);
- /* If scatter mode is the same as before, nothing to do. */
- if (tmpl.sp == rxq->sp) {
- DEBUG("%p: nothing to do", (void *)dev);
- return 0;
- }
- /* From now on, any failure will render the queue unusable.
- * Reinitialize QP. */
- mod = (struct ibv_exp_qp_attr){ .qp_state = IBV_QPS_RESET };
- err = ibv_exp_modify_qp(tmpl.qp, &mod, IBV_EXP_QP_STATE);
- if (err) {
- ERROR("%p: cannot reset QP: %s", (void *)dev, strerror(err));
- assert(err > 0);
- return err;
- }
- err = ibv_resize_cq(tmpl.cq, desc_n);
- if (err) {
- ERROR("%p: cannot resize CQ: %s", (void *)dev, strerror(err));
- assert(err > 0);
- return err;
- }
- mod = (struct ibv_exp_qp_attr){
- /* Move the QP to this state. */
- .qp_state = IBV_QPS_INIT,
- /* Primary port number. */
- .port_num = priv->port
- };
- err = ibv_exp_modify_qp(tmpl.qp, &mod,
- (IBV_EXP_QP_STATE |
- (parent ? IBV_EXP_QP_GROUP_RSS : 0) |
- IBV_EXP_QP_PORT));
- if (err) {
- ERROR("%p: QP state to IBV_QPS_INIT failed: %s",
- (void *)dev, strerror(err));
- assert(err > 0);
- return err;
- };
- /* Allocate pool. */
- pool = rte_malloc(__func__, (mbuf_n * sizeof(*pool)), 0);
- if (pool == NULL) {
- ERROR("%p: cannot allocate memory", (void *)dev);
- return ENOBUFS;
- }
- /* Snatch mbufs from original queue. */
- k = 0;
- if (rxq->sp) {
- struct rxq_elt_sp (*elts)[rxq->elts_n] = rxq->elts.sp;
-
- for (i = 0; (i != elemof(*elts)); ++i) {
- struct rxq_elt_sp *elt = &(*elts)[i];
- unsigned int j;
-
- for (j = 0; (j != elemof(elt->bufs)); ++j) {
- assert(elt->bufs[j] != NULL);
- pool[k++] = elt->bufs[j];
- }
- }
- } else {
- struct rxq_elt (*elts)[rxq->elts_n] = rxq->elts.no_sp;
-
- for (i = 0; (i != elemof(*elts)); ++i) {
- struct rxq_elt *elt = &(*elts)[i];
- struct rte_mbuf *buf = (void *)
- ((uintptr_t)elt->sge.addr -
- WR_ID(elt->wr.wr_id).offset);
-
- assert(WR_ID(elt->wr.wr_id).id == i);
- pool[k++] = buf;
- }
- }
- assert(k == mbuf_n);
- tmpl.elts_n = 0;
- tmpl.elts.sp = NULL;
- assert((void *)&tmpl.elts.sp == (void *)&tmpl.elts.no_sp);
- err = ((tmpl.sp) ?
- rxq_alloc_elts_sp(&tmpl, desc_n, pool) :
- rxq_alloc_elts(&tmpl, desc_n, pool));
- if (err) {
- ERROR("%p: cannot reallocate WRs, aborting", (void *)dev);
- rte_free(pool);
- assert(err > 0);
- return err;
- }
- assert(tmpl.elts_n == desc_n);
- assert(tmpl.elts.sp != NULL);
- rte_free(pool);
- /* Clean up original data. */
- rxq->elts_n = 0;
- rte_free(rxq->elts.sp);
- rxq->elts.sp = NULL;
- /* Post WRs. */
- err = ibv_post_recv(tmpl.qp,
- (tmpl.sp ?
- &(*tmpl.elts.sp)[0].wr :
- &(*tmpl.elts.no_sp)[0].wr),
- &bad_wr);
- if (err) {
- ERROR("%p: ibv_post_recv() failed for WR %p: %s",
- (void *)dev,
- (void *)bad_wr,
- strerror(err));
- goto skip_rtr;
- }
- mod = (struct ibv_exp_qp_attr){
- .qp_state = IBV_QPS_RTR
- };
- err = ibv_exp_modify_qp(tmpl.qp, &mod, IBV_EXP_QP_STATE);
- if (err)
- ERROR("%p: QP state to IBV_QPS_RTR failed: %s",
- (void *)dev, strerror(err));
-skip_rtr:
- *rxq = tmpl;
- assert(err >= 0);
- return err;
-}
-
-/**
- * Configure a RX queue.
- *
- * @param dev
- * Pointer to Ethernet device structure.
- * @param rxq
- * Pointer to RX queue structure.
- * @param desc
- * Number of descriptors to configure in queue.
- * @param socket
- * NUMA socket on which memory must be allocated.
- * @param inactive
- * If true, the queue is disabled because its index is higher or
- * equal to the real number of queues, which must be a power of 2.
- * @param[in] conf
- * Thresholds parameters.
- * @param mp
- * Memory pool for buffer allocations.
- *
- * @return
- * 0 on success, errno value on failure.
- */
-static int
-rxq_setup(struct rte_eth_dev *dev, struct rxq *rxq, uint16_t desc,
- unsigned int socket, int inactive, const struct rte_eth_rxconf *conf,
- struct rte_mempool *mp)
-{
- struct priv *priv = dev->data->dev_private;
- struct rxq tmpl = {
- .priv = priv,
- .mp = mp,
- .socket = socket
- };
- struct ibv_exp_qp_attr mod;
- union {
- struct ibv_exp_query_intf_params params;
- struct ibv_exp_cq_init_attr cq;
- struct ibv_exp_res_domain_init_attr rd;
- } attr;
- enum ibv_exp_query_intf_status status;
- struct ibv_recv_wr *bad_wr;
- unsigned int mb_len;
- int ret = 0;
- int parent = (rxq == &priv->rxq_parent);
-
- (void)conf; /* Thresholds configuration (ignored). */
- /*
- * If this is a parent queue, hardware must support RSS and
- * RSS must be enabled.
- */
- assert((!parent) || ((priv->hw_rss) && (priv->rss)));
- if (parent) {
- /* Even if unused, ibv_create_cq() requires at least one
- * descriptor. */
- desc = 1;
- goto skip_mr;
- }
- mb_len = rte_pktmbuf_data_room_size(mp);
- if ((desc == 0) || (desc % MLX4_PMD_SGE_WR_N)) {
- ERROR("%p: invalid number of RX descriptors (must be a"
- " multiple of %d)", (void *)dev, MLX4_PMD_SGE_WR_N);
- return EINVAL;
- }
- /* Toggle RX checksum offload if hardware supports it. */
- if (priv->hw_csum)
- tmpl.csum = !!dev->data->dev_conf.rxmode.hw_ip_checksum;
- if (priv->hw_csum_l2tun)
- tmpl.csum_l2tun = !!dev->data->dev_conf.rxmode.hw_ip_checksum;
- /* Enable scattered packets support for this queue if necessary. */
- assert(mb_len >= RTE_PKTMBUF_HEADROOM);
- if (dev->data->dev_conf.rxmode.max_rx_pkt_len <=
- (mb_len - RTE_PKTMBUF_HEADROOM)) {
- tmpl.sp = 0;
- } else if (dev->data->dev_conf.rxmode.enable_scatter) {
- tmpl.sp = 1;
- desc /= MLX4_PMD_SGE_WR_N;
- } else {
- WARN("%p: the requested maximum Rx packet size (%u) is"
- " larger than a single mbuf (%u) and scattered"
- " mode has not been requested",
- (void *)dev,
- dev->data->dev_conf.rxmode.max_rx_pkt_len,
- mb_len - RTE_PKTMBUF_HEADROOM);
- }
- DEBUG("%p: %s scattered packets support (%u WRs)",
- (void *)dev, (tmpl.sp ? "enabling" : "disabling"), desc);
- /* Use the entire RX mempool as the memory region. */
- tmpl.mr = mlx4_mp2mr(priv->pd, mp);
- if (tmpl.mr == NULL) {
- ret = EINVAL;
- ERROR("%p: MR creation failure: %s",
- (void *)dev, strerror(ret));
- goto error;
- }
-skip_mr:
- attr.rd = (struct ibv_exp_res_domain_init_attr){
- .comp_mask = (IBV_EXP_RES_DOMAIN_THREAD_MODEL |
- IBV_EXP_RES_DOMAIN_MSG_MODEL),
- .thread_model = IBV_EXP_THREAD_SINGLE,
- .msg_model = IBV_EXP_MSG_HIGH_BW,
- };
- tmpl.rd = ibv_exp_create_res_domain(priv->ctx, &attr.rd);
- if (tmpl.rd == NULL) {
- ret = ENOMEM;
- ERROR("%p: RD creation failure: %s",
- (void *)dev, strerror(ret));
- goto error;
- }
- if (dev->data->dev_conf.intr_conf.rxq) {
- tmpl.channel = ibv_create_comp_channel(priv->ctx);
- if (tmpl.channel == NULL) {
- ret = ENOMEM;
- ERROR("%p: Rx interrupt completion channel creation"
- " failure: %s",
- (void *)dev, strerror(ret));
- goto error;
- }
- }
- attr.cq = (struct ibv_exp_cq_init_attr){
- .comp_mask = IBV_EXP_CQ_INIT_ATTR_RES_DOMAIN,
- .res_domain = tmpl.rd,
- };
- tmpl.cq = ibv_exp_create_cq(priv->ctx, desc, NULL, tmpl.channel, 0,
- &attr.cq);
- if (tmpl.cq == NULL) {
- ret = ENOMEM;
- ERROR("%p: CQ creation failure: %s",
- (void *)dev, strerror(ret));
- goto error;
- }
- DEBUG("priv->device_attr.max_qp_wr is %d",
- priv->device_attr.max_qp_wr);
- DEBUG("priv->device_attr.max_sge is %d",
- priv->device_attr.max_sge);
- if (priv->rss && !inactive)
- tmpl.qp = rxq_setup_qp_rss(priv, tmpl.cq, desc, parent,
- tmpl.rd);
- else
- tmpl.qp = rxq_setup_qp(priv, tmpl.cq, desc, tmpl.rd);
- if (tmpl.qp == NULL) {
- ret = (errno ? errno : EINVAL);
- ERROR("%p: QP creation failure: %s",
- (void *)dev, strerror(ret));
- goto error;
- }
- mod = (struct ibv_exp_qp_attr){
- /* Move the QP to this state. */
- .qp_state = IBV_QPS_INIT,
- /* Primary port number. */
- .port_num = priv->port
- };
- ret = ibv_exp_modify_qp(tmpl.qp, &mod,
- (IBV_EXP_QP_STATE |
- (parent ? IBV_EXP_QP_GROUP_RSS : 0) |
- IBV_EXP_QP_PORT));
- if (ret) {
- ERROR("%p: QP state to IBV_QPS_INIT failed: %s",
- (void *)dev, strerror(ret));
- goto error;
- }
- /* Allocate descriptors for RX queues, except for the RSS parent. */
- if (parent)
- goto skip_alloc;
- if (tmpl.sp)
- ret = rxq_alloc_elts_sp(&tmpl, desc, NULL);
- else
- ret = rxq_alloc_elts(&tmpl, desc, NULL);
- if (ret) {
- ERROR("%p: RXQ allocation failed: %s",
- (void *)dev, strerror(ret));
- goto error;
- }
- ret = ibv_post_recv(tmpl.qp,
- (tmpl.sp ?
- &(*tmpl.elts.sp)[0].wr :
- &(*tmpl.elts.no_sp)[0].wr),
- &bad_wr);
- if (ret) {
- ERROR("%p: ibv_post_recv() failed for WR %p: %s",
- (void *)dev,
- (void *)bad_wr,
- strerror(ret));
- goto error;
- }
-skip_alloc:
- mod = (struct ibv_exp_qp_attr){
- .qp_state = IBV_QPS_RTR
- };
- ret = ibv_exp_modify_qp(tmpl.qp, &mod, IBV_EXP_QP_STATE);
- if (ret) {
- ERROR("%p: QP state to IBV_QPS_RTR failed: %s",
- (void *)dev, strerror(ret));
- goto error;
- }
- /* Save port ID. */
- tmpl.port_id = dev->data->port_id;
- DEBUG("%p: RTE port ID: %u", (void *)rxq, tmpl.port_id);
- attr.params = (struct ibv_exp_query_intf_params){
- .intf_scope = IBV_EXP_INTF_GLOBAL,
- .intf = IBV_EXP_INTF_CQ,
- .obj = tmpl.cq,
- };
- tmpl.if_cq = ibv_exp_query_intf(priv->ctx, &attr.params, &status);
- if (tmpl.if_cq == NULL) {
- ERROR("%p: CQ interface family query failed with status %d",
- (void *)dev, status);
- goto error;
- }
- attr.params = (struct ibv_exp_query_intf_params){
- .intf_scope = IBV_EXP_INTF_GLOBAL,
- .intf = IBV_EXP_INTF_QP_BURST,
- .obj = tmpl.qp,
- };
- tmpl.if_qp = ibv_exp_query_intf(priv->ctx, &attr.params, &status);
- if (tmpl.if_qp == NULL) {
- ERROR("%p: QP interface family query failed with status %d",
- (void *)dev, status);
- goto error;
- }
- /* Clean up rxq in case we're reinitializing it. */
- DEBUG("%p: cleaning-up old rxq just in case", (void *)rxq);
- rxq_cleanup(rxq);
- *rxq = tmpl;
- DEBUG("%p: rxq updated with %p", (void *)rxq, (void *)&tmpl);
- assert(ret == 0);
- return 0;
-error:
- rxq_cleanup(&tmpl);
- assert(ret > 0);
- return ret;
-}
-
-/**
- * DPDK callback to configure a RX queue.
- *
- * @param dev
- * Pointer to Ethernet device structure.
- * @param idx
- * RX queue index.
- * @param desc
- * Number of descriptors to configure in queue.
- * @param socket
- * NUMA socket on which memory must be allocated.
- * @param[in] conf
- * Thresholds parameters.
- * @param mp
- * Memory pool for buffer allocations.
- *
- * @return
- * 0 on success, negative errno value on failure.
- */
-static int
-mlx4_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
- unsigned int socket, const struct rte_eth_rxconf *conf,
- struct rte_mempool *mp)
-{
- struct priv *priv = dev->data->dev_private;
- struct rxq *rxq = (*priv->rxqs)[idx];
- int inactive = 0;
- int ret;
-
- priv_lock(priv);
- DEBUG("%p: configuring queue %u for %u descriptors",
- (void *)dev, idx, desc);
- if (idx >= priv->rxqs_n) {
- ERROR("%p: queue index out of range (%u >= %u)",
- (void *)dev, idx, priv->rxqs_n);
- priv_unlock(priv);
- return -EOVERFLOW;
- }
- if (rxq != NULL) {
- DEBUG("%p: reusing already allocated queue index %u (%p)",
- (void *)dev, idx, (void *)rxq);
- if (priv->started) {
- priv_unlock(priv);
- return -EEXIST;
- }
- (*priv->rxqs)[idx] = NULL;
- if (idx == 0)
- priv_mac_addr_del(priv);
- rxq_cleanup(rxq);
- } else {
- rxq = rte_calloc_socket("RXQ", 1, sizeof(*rxq), 0, socket);
- if (rxq == NULL) {
- ERROR("%p: unable to allocate queue index %u",
- (void *)dev, idx);
- priv_unlock(priv);
- return -ENOMEM;
- }
- }
- if (idx >= rte_align32pow2(priv->rxqs_n + 1) >> 1)
- inactive = 1;
- ret = rxq_setup(dev, rxq, desc, socket, inactive, conf, mp);
- if (ret)
- rte_free(rxq);
- else {
- rxq->stats.idx = idx;
- DEBUG("%p: adding RX queue %p to list",
- (void *)dev, (void *)rxq);
- (*priv->rxqs)[idx] = rxq;
- /* Update receive callback. */
- if (rxq->sp)
- dev->rx_pkt_burst = mlx4_rx_burst_sp;
- else
- dev->rx_pkt_burst = mlx4_rx_burst;
- }
- priv_unlock(priv);
- return -ret;
-}
-
-/**
- * DPDK callback to release a RX queue.
- *
- * @param dpdk_rxq
- * Generic RX queue pointer.
- */
-static void
-mlx4_rx_queue_release(void *dpdk_rxq)
-{
- struct rxq *rxq = (struct rxq *)dpdk_rxq;
- struct priv *priv;
- unsigned int i;
-
- if (rxq == NULL)
- return;
- priv = rxq->priv;
- priv_lock(priv);
- assert(rxq != &priv->rxq_parent);
- for (i = 0; (i != priv->rxqs_n); ++i)
- if ((*priv->rxqs)[i] == rxq) {
- DEBUG("%p: removing RX queue %p from list",
- (void *)priv->dev, (void *)rxq);
- (*priv->rxqs)[i] = NULL;
- if (i == 0)
- priv_mac_addr_del(priv);
- break;
- }
- rxq_cleanup(rxq);
- rte_free(rxq);
- priv_unlock(priv);
-}
-
-static int
-priv_dev_interrupt_handler_install(struct priv *, struct rte_eth_dev *);
-
-static int
-priv_dev_removal_interrupt_handler_install(struct priv *, struct rte_eth_dev *);
-
-static int
-priv_dev_link_interrupt_handler_install(struct priv *, struct rte_eth_dev *);
-
-/**
- * DPDK callback to start the device.
- *
- * Simulate device start by attaching all configured flows.
- *
- * @param dev
- * Pointer to Ethernet device structure.
- *
- * @return
- * 0 on success, negative errno value on failure.
- */
-static int
-mlx4_dev_start(struct rte_eth_dev *dev)
-{
- struct priv *priv = dev->data->dev_private;
- int ret;
-
- priv_lock(priv);
- if (priv->started) {
- priv_unlock(priv);
- return 0;
- }
- DEBUG("%p: attaching configured flows to all RX queues", (void *)dev);
- priv->started = 1;
- ret = priv_mac_addr_add(priv);
- if (ret)
- goto err;
- ret = priv_dev_link_interrupt_handler_install(priv, dev);
- if (ret) {
- ERROR("%p: LSC handler install failed",
- (void *)dev);
- goto err;
- }
- ret = priv_dev_removal_interrupt_handler_install(priv, dev);
- if (ret) {
- ERROR("%p: RMV handler install failed",
- (void *)dev);
- goto err;
- }
- ret = priv_rx_intr_vec_enable(priv);
- if (ret) {
- ERROR("%p: Rx interrupt vector creation failed",
- (void *)dev);
- goto err;
- }
- ret = mlx4_priv_flow_start(priv);
- if (ret) {
- ERROR("%p: flow start failed: %s",
- (void *)dev, strerror(ret));
- goto err;
- }
- priv_unlock(priv);
- return 0;
-err:
- /* Rollback. */
- priv_mac_addr_del(priv);
- priv->started = 0;
- priv_unlock(priv);
- return -ret;
-}
-
-/**
- * DPDK callback to stop the device.
- *
- * Simulate device stop by detaching all configured flows.
- *
- * @param dev
- * Pointer to Ethernet device structure.
- */
-static void
-mlx4_dev_stop(struct rte_eth_dev *dev)
-{
- struct priv *priv = dev->data->dev_private;
-
- priv_lock(priv);
- if (!priv->started) {
- priv_unlock(priv);
- return;
- }
- DEBUG("%p: detaching flows from all RX queues", (void *)dev);
- priv->started = 0;
- mlx4_priv_flow_stop(priv);
- priv_mac_addr_del(priv);
- priv_unlock(priv);
-}
-
-/**
- * Dummy DPDK callback for TX.
- *
- * This function is used to temporarily replace the real callback during
- * unsafe control operations on the queue, or in case of error.
- *
- * @param dpdk_txq
- * Generic pointer to TX queue structure.
- * @param[in] pkts
- * Packets to transmit.
- * @param pkts_n
- * Number of packets in array.
- *
- * @return
- * Number of packets successfully transmitted (<= pkts_n).
- */
-static uint16_t
-removed_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
-{
- (void)dpdk_txq;
- (void)pkts;
- (void)pkts_n;
- return 0;
-}
-
-/**
- * Dummy DPDK callback for RX.
- *
- * This function is used to temporarily replace the real callback during
- * unsafe control operations on the queue, or in case of error.
- *
- * @param dpdk_rxq
- * Generic pointer to RX queue structure.
- * @param[out] pkts
- * Array to store received packets.
- * @param pkts_n
- * Maximum number of packets in array.
- *
- * @return
- * Number of packets successfully received (<= pkts_n).
- */
-static uint16_t
-removed_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
-{
- (void)dpdk_rxq;
- (void)pkts;
- (void)pkts_n;
- return 0;
-}
-
-static int
-priv_dev_interrupt_handler_uninstall(struct priv *, struct rte_eth_dev *);
-
-static int
-priv_dev_removal_interrupt_handler_uninstall(struct priv *,
- struct rte_eth_dev *);
-
-static int
-priv_dev_link_interrupt_handler_uninstall(struct priv *, struct rte_eth_dev *);
-
-/**
- * DPDK callback to close the device.
- *
- * Destroy all queues and objects, free memory.
- *
- * @param dev
- * Pointer to Ethernet device structure.
- */
-static void
-mlx4_dev_close(struct rte_eth_dev *dev)
-{
- struct priv *priv = dev->data->dev_private;
- void *tmp;
- unsigned int i;
-
- if (priv == NULL)
- return;
- priv_lock(priv);
- DEBUG("%p: closing device \"%s\"",
- (void *)dev,
- ((priv->ctx != NULL) ? priv->ctx->device->name : ""));
- priv_mac_addr_del(priv);
- /* Prevent crashes when queues are still in use. This is unfortunately
- * still required for DPDK 1.3 because some programs (such as testpmd)
- * never release them before closing the device. */
- dev->rx_pkt_burst = removed_rx_burst;
- dev->tx_pkt_burst = removed_tx_burst;
- if (priv->rxqs != NULL) {
- /* XXX race condition if mlx4_rx_burst() is still running. */
- usleep(1000);
- for (i = 0; (i != priv->rxqs_n); ++i) {
- tmp = (*priv->rxqs)[i];
- if (tmp == NULL)
- continue;
- (*priv->rxqs)[i] = NULL;
- rxq_cleanup(tmp);
- rte_free(tmp);
- }
- priv->rxqs_n = 0;
- priv->rxqs = NULL;
- }
- if (priv->txqs != NULL) {
- /* XXX race condition if mlx4_tx_burst() is still running. */
- usleep(1000);
- for (i = 0; (i != priv->txqs_n); ++i) {
- tmp = (*priv->txqs)[i];
- if (tmp == NULL)
- continue;
- (*priv->txqs)[i] = NULL;
- txq_cleanup(tmp);
- rte_free(tmp);
- }
- priv->txqs_n = 0;
- priv->txqs = NULL;
- }
- if (priv->rss)
- rxq_cleanup(&priv->rxq_parent);
- if (priv->pd != NULL) {
- assert(priv->ctx != NULL);
- claim_zero(ibv_dealloc_pd(priv->pd));
- claim_zero(ibv_close_device(priv->ctx));
- } else
- assert(priv->ctx == NULL);
- priv_dev_removal_interrupt_handler_uninstall(priv, dev);
- priv_dev_link_interrupt_handler_uninstall(priv, dev);
- priv_rx_intr_vec_disable(priv);
- priv_unlock(priv);
- memset(priv, 0, sizeof(*priv));
-}
-
-/**
- * Change the link state (UP / DOWN).
- *
- * @param priv
- * Pointer to Ethernet device private data.
- * @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;
- unsigned int i;
-
- if (up) {
- err = priv_set_flags(priv, ~IFF_UP, IFF_UP);
- if (err)
- return err;
- for (i = 0; i < priv->rxqs_n; i++)
- if ((*priv->rxqs)[i]->sp)
- break;
- /* Check if an sp queue exists.
- * Note: Some old frames might be received.
- */
- if (i == priv->rxqs_n)
- dev->rx_pkt_burst = mlx4_rx_burst;
- else
- dev->rx_pkt_burst = mlx4_rx_burst_sp;
- dev->tx_pkt_burst = mlx4_tx_burst;
- } 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.
- */
-static int
-mlx4_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.
- */
-static int
-mlx4_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;
-}
-/**
- * DPDK callback to get information about the device.
- *
- * @param dev
- * Pointer to Ethernet device structure.
- * @param[out] info
- * Info structure output buffer.
- */
-static void
-mlx4_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
-{
- struct priv *priv = dev->data->dev_private;
- unsigned int max;
- char ifname[IF_NAMESIZE];
-
- info->pci_dev = RTE_ETH_DEV_TO_PCI(dev);
-
- if (priv == NULL)
- return;
- 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;
- /* Last array entry is reserved for broadcast. */
- info->max_mac_addrs = 1;
- info->rx_offload_capa =
- (priv->hw_csum ?
- (DEV_RX_OFFLOAD_IPV4_CKSUM |
- DEV_RX_OFFLOAD_UDP_CKSUM |
- DEV_RX_OFFLOAD_TCP_CKSUM) :
- 0);
- info->tx_offload_capa =
- (priv->hw_csum ?
- (DEV_TX_OFFLOAD_IPV4_CKSUM |
- DEV_TX_OFFLOAD_UDP_CKSUM |
- DEV_TX_OFFLOAD_TCP_CKSUM) :
- 0);
- if (priv_get_ifname(priv, &ifname) == 0)
- info->if_index = if_nametoindex(ifname);
- info->speed_capa =
- ETH_LINK_SPEED_1G |
- ETH_LINK_SPEED_10G |
- ETH_LINK_SPEED_20G |
- ETH_LINK_SPEED_40G |
- ETH_LINK_SPEED_56G;
- priv_unlock(priv);
-}
-
-static const uint32_t *
-mlx4_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,
- RTE_PTYPE_L3_IPV6,
- RTE_PTYPE_INNER_L3_IPV4,
- RTE_PTYPE_INNER_L3_IPV6,
- RTE_PTYPE_UNKNOWN
- };
-
- if (dev->rx_pkt_burst == mlx4_rx_burst ||
- dev->rx_pkt_burst == mlx4_rx_burst_sp)
- return ptypes;
- return NULL;
-}
-
-/**
- * DPDK callback to get device statistics.
- *
- * @param dev
- * Pointer to Ethernet device structure.
- * @param[out] stats
- * Stats structure output buffer.
- */
-static void
-mlx4_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
-{
- struct priv *priv = dev->data->dev_private;
- struct rte_eth_stats tmp = {0};
- unsigned int i;
- unsigned int idx;
-
- if (priv == NULL)
- return;
- priv_lock(priv);
- /* Add software counters. */
- for (i = 0; (i != priv->rxqs_n); ++i) {
- struct rxq *rxq = (*priv->rxqs)[i];
-
- if (rxq == NULL)
- continue;
- idx = rxq->stats.idx;
- if (idx < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
- tmp.q_ipackets[idx] += rxq->stats.ipackets;
- tmp.q_ibytes[idx] += rxq->stats.ibytes;
- tmp.q_errors[idx] += (rxq->stats.idropped +
- rxq->stats.rx_nombuf);
- }
- tmp.ipackets += rxq->stats.ipackets;
- tmp.ibytes += rxq->stats.ibytes;
- tmp.ierrors += rxq->stats.idropped;
- tmp.rx_nombuf += rxq->stats.rx_nombuf;
- }
- for (i = 0; (i != priv->txqs_n); ++i) {
- struct txq *txq = (*priv->txqs)[i];
-
- if (txq == NULL)
- continue;
- idx = txq->stats.idx;
- if (idx < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
- tmp.q_opackets[idx] += txq->stats.opackets;
- tmp.q_obytes[idx] += txq->stats.obytes;
- tmp.q_errors[idx] += txq->stats.odropped;
- }
- tmp.opackets += txq->stats.opackets;
- tmp.obytes += txq->stats.obytes;
- tmp.oerrors += txq->stats.odropped;
- }
- *stats = tmp;
- priv_unlock(priv);
-}
-
-/**
- * DPDK callback to clear device statistics.
- *
- * @param dev
- * Pointer to Ethernet device structure.
- */
-static void
-mlx4_stats_reset(struct rte_eth_dev *dev)
-{
- struct priv *priv = dev->data->dev_private;
- unsigned int i;
- unsigned int idx;
-
- if (priv == NULL)
- return;
- priv_lock(priv);
- for (i = 0; (i != priv->rxqs_n); ++i) {
- if ((*priv->rxqs)[i] == NULL)
- continue;
- idx = (*priv->rxqs)[i]->stats.idx;
- (*priv->rxqs)[i]->stats =
- (struct mlx4_rxq_stats){ .idx = idx };
- }
- for (i = 0; (i != priv->txqs_n); ++i) {
- if ((*priv->txqs)[i] == NULL)
- continue;
- idx = (*priv->txqs)[i]->stats.idx;
- (*priv->txqs)[i]->stats =
- (struct mlx4_txq_stats){ .idx = idx };
- }
- priv_unlock(priv);
-}
-
-/**
- * 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
-mlx4_link_update(struct rte_eth_dev *dev, int wait_to_complete)
-{
- const struct priv *priv = dev->data->dev_private;
- struct ethtool_cmd edata = {
- .cmd = ETHTOOL_GSET
- };
- struct ifreq ifr;
- struct rte_eth_link dev_link;
- int link_speed = 0;
-
- /* priv_lock() is not taken to allow concurrent calls. */
-
- if (priv == NULL)
- return -EINVAL;
- (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;
- 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 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.
- */
-static int
-mlx4_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) =
- mlx4_rx_burst;
-
- 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);
- priv->mtu = mtu;
- /* Remove MAC flow. */
- priv_mac_addr_del(priv);
- /* 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 mlx4_rx_burst() and uses
- * removed_rx_burst() instead. */
- rte_wmb();
- usleep(1000);
- /* Reconfigure each RX queue. */
- for (i = 0; (i != priv->rxqs_n); ++i) {
- struct rxq *rxq = (*priv->rxqs)[i];
- unsigned int max_frame_len;
-
- if (rxq == NULL)
- continue;
- /* Calculate new maximum frame length according to MTU. */
- max_frame_len = (priv->mtu + ETHER_HDR_LEN +
- (ETHER_MAX_VLAN_FRAME_LEN - ETHER_MAX_LEN));
- /* 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;
- ret = rxq_rehash(dev, rxq);
- if (ret) {
- /* Force SP RX if that queue requires it and abort. */
- if (rxq->sp)
- rx_func = mlx4_rx_burst_sp;
- break;
- }
- /* Scattered burst function takes priority. */
- if (rxq->sp)
- rx_func = mlx4_rx_burst_sp;
- }
- /* Burst functions can now be called again. */
- rte_wmb();
- dev->rx_pkt_burst = rx_func;
- /* Restore MAC flow. */
- ret = priv_mac_addr_add(priv);
-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.
- */
-static int
-mlx4_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;
-
- ifr.ifr_data = (void *)ðpause;
- 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.
- */
-static int
-mlx4_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;
-
- ifr.ifr_data = (void *)ðpause;
- 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;
-}
-
-const struct rte_flow_ops mlx4_flow_ops = {
- .validate = mlx4_flow_validate,
- .create = mlx4_flow_create,
- .destroy = mlx4_flow_destroy,
- .flush = mlx4_flow_flush,
- .query = NULL,
- .isolate = mlx4_flow_isolate,
-};
-
-/**
- * Manage filter operations.
- *
- * @param dev
- * Pointer to Ethernet device structure.
- * @param filter_type
- * Filter type.
- * @param filter_op
- * Operation to perform.
- * @param arg
- * Pointer to operation-specific structure.
- *
- * @return
- * 0 on success, negative errno value on failure.
- */
-static int
-mlx4_dev_filter_ctrl(struct rte_eth_dev *dev,
- enum rte_filter_type filter_type,
- enum rte_filter_op filter_op,
- void *arg)
-{
- int ret = EINVAL;
-
- switch (filter_type) {
- case RTE_ETH_FILTER_GENERIC:
- if (filter_op != RTE_ETH_FILTER_GET)
- return -EINVAL;
- *(const void **)arg = &mlx4_flow_ops;
- return 0;
- default:
- ERROR("%p: filter type (%d) not supported",
- (void *)dev, filter_type);
- break;
- }
- return -ret;
-}
-
-static const struct eth_dev_ops mlx4_dev_ops = {
- .dev_configure = mlx4_dev_configure,
- .dev_start = mlx4_dev_start,
- .dev_stop = mlx4_dev_stop,
- .dev_set_link_down = mlx4_set_link_down,
- .dev_set_link_up = mlx4_set_link_up,
- .dev_close = mlx4_dev_close,
- .link_update = mlx4_link_update,
- .stats_get = mlx4_stats_get,
- .stats_reset = mlx4_stats_reset,
- .dev_infos_get = mlx4_dev_infos_get,
- .dev_supported_ptypes_get = mlx4_dev_supported_ptypes_get,
- .rx_queue_setup = mlx4_rx_queue_setup,
- .tx_queue_setup = mlx4_tx_queue_setup,
- .rx_queue_release = mlx4_rx_queue_release,
- .tx_queue_release = mlx4_tx_queue_release,
- .flow_ctrl_get = mlx4_dev_get_flow_ctrl,
- .flow_ctrl_set = mlx4_dev_set_flow_ctrl,
- .mtu_set = mlx4_dev_set_mtu,
- .filter_ctrl = mlx4_dev_filter_ctrl,
- .rx_queue_intr_enable = mlx4_rx_intr_enable,
- .rx_queue_intr_disable = mlx4_rx_intr_disable,
-};
-
-/**
- * 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.
- */
-static int
-mlx4_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="
- "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
- &pci_addr->domain,
- &pci_addr->bus,
- &pci_addr->devid,
- &pci_addr->function) == 4) {
- ret = 0;
- break;
- }
- }
- fclose(file);
- return 0;
-}
-
-/**
- * Get MAC address by querying netdevice.
- *
- * @param[in] priv
- * struct priv for the requested device.
- * @param[out] mac
- * MAC address output buffer.
- *
- * @return
- * 0 on success, -1 on failure and errno is set.
- */
-static int
-priv_get_mac(struct priv *priv, uint8_t (*mac)[ETHER_ADDR_LEN])
-{
- struct ifreq request;
-
- if (priv_ifreq(priv, SIOCGIFHWADDR, &request))
- return -1;
- memcpy(mac, request.ifr_hwaddr.sa_data, ETHER_ADDR_LEN);
- return 0;
-}
-
-/**
- * Retrieve integer value from environment variable.
- *
- * @param[in] name
- * Environment variable name.
- *
- * @return
- * Integer value, 0 if the variable is not set.
- */
-static int
-mlx4_getenv_int(const char *name)
-{
- const char *val = getenv(name);
-
- if (val == NULL)
- return 0;
- return atoi(val);
-}
-
-static void
-mlx4_dev_link_status_handler(void *);
-static void
-mlx4_dev_interrupt_handler(void *);
-
-/**
- * Link/device status handler.
- *
- * @param priv
- * Pointer to private structure.
- * @param dev
- * Pointer to the rte_eth_dev structure.
- * @param events
- * Pointer to event flags holder.
- *
- * @return
- * Number of events
- */
-static int
-priv_dev_status_handler(struct priv *priv, struct rte_eth_dev *dev,
- uint32_t *events)
-{
- struct ibv_async_event event;
- int port_change = 0;
- struct rte_eth_link *link = &dev->data->dev_link;
- int ret = 0;
-
- *events = 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) &&
- (priv->intr_conf.lsc == 1)) {
- port_change = 1;
- ret++;
- } else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
- priv->intr_conf.rmv == 1) {
- *events |= (1 << RTE_ETH_EVENT_INTR_RMV);
- ret++;
- } else
- DEBUG("event type %d on port %d not handled",
- event.event_type, event.element.port_num);
- ibv_ack_async_event(&event);
- }
- if (!port_change)
- return ret;
- mlx4_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(MLX4_ALARM_TIMEOUT_US,
- mlx4_dev_link_status_handler,
- dev);
- }
- } else {
- *events |= (1 << RTE_ETH_EVENT_INTR_LSC);
- }
- return ret;
-}
-
-/**
- * Handle delayed link status event.
- *
- * @param arg
- * Registered argument.
- */
-static void
-mlx4_dev_link_status_handler(void *arg)
-{
- struct rte_eth_dev *dev = arg;
- struct priv *priv = dev->data->dev_private;
- uint32_t events;
- int ret;
-
- priv_lock(priv);
- assert(priv->pending_alarm == 1);
- priv->pending_alarm = 0;
- ret = priv_dev_status_handler(priv, dev, &events);
- priv_unlock(priv);
- if (ret > 0 && events & (1 << RTE_ETH_EVENT_INTR_LSC))
- _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL,
- NULL);
-}
-
-/**
- * Handle interrupts from the NIC.
- *
- * @param[in] intr_handle
- * Interrupt handler.
- * @param cb_arg
- * Callback argument.
- */
-static void
-mlx4_dev_interrupt_handler(void *cb_arg)
-{
- struct rte_eth_dev *dev = cb_arg;
- struct priv *priv = dev->data->dev_private;
- int ret;
- uint32_t ev;
- int i;
-
- priv_lock(priv);
- ret = priv_dev_status_handler(priv, dev, &ev);
- priv_unlock(priv);
- if (ret > 0) {
- for (i = RTE_ETH_EVENT_UNKNOWN;
- i < RTE_ETH_EVENT_MAX;
- i++) {
- if (ev & (1 << i)) {
- ev &= ~(1 << i);
- _rte_eth_dev_callback_process(dev, i, NULL,
- NULL);
- ret--;
- }
- }
- if (ret)
- WARN("%d event%s not processed", ret,
- (ret > 1 ? "s were" : " was"));
- }
-}
-
-/**
- * Uninstall interrupt handler.
- *
- * @param priv
- * Pointer to private structure.
- * @param dev
- * Pointer to the rte_eth_dev structure.
- * @return
- * 0 on success, negative errno value on failure.
- */
-static int
-priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
-{
- int ret;
-
- if (priv->intr_conf.lsc ||
- priv->intr_conf.rmv)
- return 0;
- ret = rte_intr_callback_unregister(&priv->intr_handle,
- mlx4_dev_interrupt_handler,
- dev);
- if (ret < 0) {
- ERROR("rte_intr_callback_unregister failed with %d"
- "%s%s%s", ret,
- (errno ? " (errno: " : ""),
- (errno ? strerror(errno) : ""),
- (errno ? ")" : ""));
- }
- priv->intr_handle.fd = 0;
- priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
- return ret;
-}
-
-/**
- * Install interrupt handler.
- *
- * @param priv
- * Pointer to private structure.
- * @param dev
- * Pointer to the rte_eth_dev structure.
- * @return
- * 0 on success, negative errno value on failure.
- */
-static int
-priv_dev_interrupt_handler_install(struct priv *priv,
- struct rte_eth_dev *dev)
-{
- int flags;
- int rc;
-
- /* Check whether the interrupt handler has already been installed
- * for either type of interrupt
- */
- if (priv->intr_conf.lsc &&
- priv->intr_conf.rmv &&
- priv->intr_handle.fd)
- return 0;
- 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;
- dev->data->dev_conf.intr_conf.rmv = 0;
- return -errno;
- } else {
- priv->intr_handle.fd = priv->ctx->async_fd;
- priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
- rc = rte_intr_callback_register(&priv->intr_handle,
- mlx4_dev_interrupt_handler,
- dev);
- if (rc) {
- ERROR("rte_intr_callback_register failed "
- " (errno: %s)", strerror(errno));
- return rc;
- }
- }
- return 0;
-}
-
-/**
- * Uninstall interrupt handler.
- *
- * @param priv
- * Pointer to private structure.
- * @param dev
- * Pointer to the rte_eth_dev structure.
- * @return
- * 0 on success, negative value on error.
- */
-static int
-priv_dev_removal_interrupt_handler_uninstall(struct priv *priv,
- struct rte_eth_dev *dev)
-{
- if (dev->data->dev_conf.intr_conf.rmv) {
- priv->intr_conf.rmv = 0;
- return priv_dev_interrupt_handler_uninstall(priv, dev);
- }
- return 0;
-}
-
-/**
- * Uninstall interrupt handler.
- *
- * @param priv
- * Pointer to private structure.
- * @param dev
- * Pointer to the rte_eth_dev structure.
- * @return
- * 0 on success, negative value on error,
- */
-static int
-priv_dev_link_interrupt_handler_uninstall(struct priv *priv,
- struct rte_eth_dev *dev)
-{
- int ret = 0;
-
- if (dev->data->dev_conf.intr_conf.lsc) {
- priv->intr_conf.lsc = 0;
- ret = priv_dev_interrupt_handler_uninstall(priv, dev);
- if (ret)
- return ret;
- }
- if (priv->pending_alarm)
- if (rte_eal_alarm_cancel(mlx4_dev_link_status_handler,
- dev)) {
- ERROR("rte_eal_alarm_cancel failed "
- " (errno: %s)", strerror(rte_errno));
- return -rte_errno;
- }
- priv->pending_alarm = 0;
- return 0;
-}
-
-/**
- * Install link interrupt handler.
- *
- * @param priv
- * Pointer to private structure.
- * @param dev
- * Pointer to the rte_eth_dev structure.
- * @return
- * 0 on success, negative value on error.
- */
-static int
-priv_dev_link_interrupt_handler_install(struct priv *priv,
- struct rte_eth_dev *dev)
-{
- int ret;
-
- if (dev->data->dev_conf.intr_conf.lsc) {
- ret = priv_dev_interrupt_handler_install(priv, dev);
- if (ret)
- return ret;
- priv->intr_conf.lsc = 1;
- }
- return 0;
-}
-
-/**
- * Install removal interrupt handler.
- *
- * @param priv
- * Pointer to private structure.
- * @param dev
- * Pointer to the rte_eth_dev structure.
- * @return
- * 0 on success, negative value on error.
- */
-static int
-priv_dev_removal_interrupt_handler_install(struct priv *priv,
- struct rte_eth_dev *dev)
-{
- int ret;
-
- if (dev->data->dev_conf.intr_conf.rmv) {
- ret = priv_dev_interrupt_handler_install(priv, dev);
- if (ret)
- return ret;
- priv->intr_conf.rmv = 1;
- }
- return 0;
-}
-
-/**
- * Allocate queue vector and fill epoll fd list for Rx interrupts.
- *
- * @param priv
- * Pointer to private structure.
- *
- * @return
- * 0 on success, negative on failure.
- */
-static int
-priv_rx_intr_vec_enable(struct priv *priv)
-{
- unsigned int i;
- unsigned int rxqs_n = priv->rxqs_n;
- unsigned int n = RTE_MIN(rxqs_n, (uint32_t)RTE_MAX_RXTX_INTR_VEC_ID);
- unsigned int count = 0;
- struct rte_intr_handle *intr_handle = priv->dev->intr_handle;
-
- if (!priv->dev->data->dev_conf.intr_conf.rxq)
- return 0;
- priv_rx_intr_vec_disable(priv);
- intr_handle->intr_vec = malloc(sizeof(intr_handle->intr_vec[rxqs_n]));
- if (intr_handle->intr_vec == NULL) {
- ERROR("failed to allocate memory for interrupt vector,"
- " Rx interrupts will not be supported");
- return -ENOMEM;
- }
- intr_handle->type = RTE_INTR_HANDLE_EXT;
- for (i = 0; i != n; ++i) {
- struct rxq *rxq = (*priv->rxqs)[i];
- int fd;
- int flags;
- int rc;
-
- /* Skip queues that cannot request interrupts. */
- if (!rxq || !rxq->channel) {
- /* Use invalid intr_vec[] index to disable entry. */
- intr_handle->intr_vec[i] =
- RTE_INTR_VEC_RXTX_OFFSET +
- RTE_MAX_RXTX_INTR_VEC_ID;
- continue;
- }
- if (count >= RTE_MAX_RXTX_INTR_VEC_ID) {
- ERROR("too many Rx queues for interrupt vector size"
- " (%d), Rx interrupts cannot be enabled",
- RTE_MAX_RXTX_INTR_VEC_ID);
- priv_rx_intr_vec_disable(priv);
- return -1;
- }
- fd = rxq->channel->fd;
- flags = fcntl(fd, F_GETFL);
- rc = fcntl(fd, F_SETFL, flags | O_NONBLOCK);
- if (rc < 0) {
- ERROR("failed to make Rx interrupt file descriptor"
- " %d non-blocking for queue index %d", fd, i);
- priv_rx_intr_vec_disable(priv);
- return rc;
- }
- intr_handle->intr_vec[i] = RTE_INTR_VEC_RXTX_OFFSET + count;
- intr_handle->efds[count] = fd;
- count++;
- }
- if (!count)
- priv_rx_intr_vec_disable(priv);
- else
- intr_handle->nb_efd = count;
- return 0;
-}
-
-/**
- * Clean up Rx interrupts handler.
- *
- * @param priv
- * Pointer to private structure.
- */
-static void
-priv_rx_intr_vec_disable(struct priv *priv)
+mlx4_dev_stop(struct rte_eth_dev *dev)
{
- struct rte_intr_handle *intr_handle = priv->dev->intr_handle;
+ struct mlx4_priv *priv = dev->data->dev_private;
- rte_intr_free_epoll_fd(intr_handle);
- free(intr_handle->intr_vec);
- intr_handle->nb_efd = 0;
- intr_handle->intr_vec = NULL;
+ if (!priv->started)
+ return;
+ DEBUG("%p: detaching flows from all RX queues", (void *)dev);
+ priv->started = 0;
+ dev->tx_pkt_burst = mlx4_tx_burst_removed;
+ dev->rx_pkt_burst = mlx4_rx_burst_removed;
+ rte_wmb();
+ /* Disable datapath on secondary process. */
+ mlx4_mp_req_stop_rxtx(dev);
+ mlx4_flow_sync(priv, NULL);
+ mlx4_rxq_intr_disable(priv);
+ mlx4_rss_deinit(priv);
}
/**
- * DPDK callback for Rx queue interrupt enable.
+ * DPDK callback to close the device.
+ *
+ * Destroy all queues and objects, free memory.
*
* @param dev
* Pointer to Ethernet device structure.
- * @param idx
- * Rx queue index.
- *
- * @return
- * 0 on success, negative on failure.
*/
-static int
-mlx4_rx_intr_enable(struct rte_eth_dev *dev, uint16_t idx)
+static void
+mlx4_dev_close(struct rte_eth_dev *dev)
{
- struct priv *priv = dev->data->dev_private;
- struct rxq *rxq = (*priv->rxqs)[idx];
- int ret;
+ struct mlx4_priv *priv = dev->data->dev_private;
+ unsigned int i;
- if (!rxq || !rxq->channel)
- ret = EINVAL;
- else
- ret = ibv_req_notify_cq(rxq->cq, 0);
- if (ret)
- WARN("unable to arm interrupt on rx queue %d", idx);
- return -ret;
+ DEBUG("%p: closing device \"%s\"",
+ (void *)dev,
+ ((priv->ctx != NULL) ? priv->ctx->device->name : ""));
+ dev->rx_pkt_burst = mlx4_rx_burst_removed;
+ dev->tx_pkt_burst = mlx4_tx_burst_removed;
+ rte_wmb();
+ /* Disable datapath on secondary process. */
+ mlx4_mp_req_stop_rxtx(dev);
+ mlx4_flow_clean(priv);
+ mlx4_rss_deinit(priv);
+ for (i = 0; i != dev->data->nb_rx_queues; ++i)
+ mlx4_rx_queue_release(dev->data->rx_queues[i]);
+ for (i = 0; i != dev->data->nb_tx_queues; ++i)
+ mlx4_tx_queue_release(dev->data->tx_queues[i]);
+ mlx4_proc_priv_uninit(dev);
+ mlx4_mr_release(dev);
+ if (priv->pd != NULL) {
+ assert(priv->ctx != NULL);
+ claim_zero(mlx4_glue->dealloc_pd(priv->pd));
+ claim_zero(mlx4_glue->close_device(priv->ctx));
+ } else
+ assert(priv->ctx == NULL);
+ mlx4_intr_uninstall(priv);
+ memset(priv, 0, sizeof(*priv));
}
+static const struct eth_dev_ops mlx4_dev_ops = {
+ .dev_configure = mlx4_dev_configure,
+ .dev_start = mlx4_dev_start,
+ .dev_stop = mlx4_dev_stop,
+ .dev_set_link_down = mlx4_dev_set_link_down,
+ .dev_set_link_up = mlx4_dev_set_link_up,
+ .dev_close = mlx4_dev_close,
+ .link_update = mlx4_link_update,
+ .promiscuous_enable = mlx4_promiscuous_enable,
+ .promiscuous_disable = mlx4_promiscuous_disable,
+ .allmulticast_enable = mlx4_allmulticast_enable,
+ .allmulticast_disable = mlx4_allmulticast_disable,
+ .mac_addr_remove = mlx4_mac_addr_remove,
+ .mac_addr_add = mlx4_mac_addr_add,
+ .mac_addr_set = mlx4_mac_addr_set,
+ .set_mc_addr_list = mlx4_set_mc_addr_list,
+ .stats_get = mlx4_stats_get,
+ .stats_reset = mlx4_stats_reset,
+ .fw_version_get = mlx4_fw_version_get,
+ .dev_infos_get = mlx4_dev_infos_get,
+ .dev_supported_ptypes_get = mlx4_dev_supported_ptypes_get,
+ .vlan_filter_set = mlx4_vlan_filter_set,
+ .rx_queue_setup = mlx4_rx_queue_setup,
+ .tx_queue_setup = mlx4_tx_queue_setup,
+ .rx_queue_release = mlx4_rx_queue_release,
+ .tx_queue_release = mlx4_tx_queue_release,
+ .flow_ctrl_get = mlx4_flow_ctrl_get,
+ .flow_ctrl_set = mlx4_flow_ctrl_set,
+ .mtu_set = mlx4_mtu_set,
+ .filter_ctrl = mlx4_filter_ctrl,
+ .rx_queue_intr_enable = mlx4_rx_intr_enable,
+ .rx_queue_intr_disable = mlx4_rx_intr_disable,
+ .is_removed = mlx4_is_removed,
+};
+
+/* Available operations from secondary process. */
+static const struct eth_dev_ops mlx4_dev_sec_ops = {
+ .stats_get = mlx4_stats_get,
+ .stats_reset = mlx4_stats_reset,
+ .fw_version_get = mlx4_fw_version_get,
+ .dev_infos_get = mlx4_dev_infos_get,
+};
+
/**
- * DPDK callback for Rx queue interrupt disable.
+ * Get PCI information from struct ibv_device.
*
- * @param dev
+ * @param device
* Pointer to Ethernet device structure.
- * @param idx
- * Rx queue index.
+ * @param[out] pci_addr
+ * PCI bus address output buffer.
*
* @return
- * 0 on success, negative on failure.
+ * 0 on success, negative errno value otherwise and rte_errno is set.
*/
static int
-mlx4_rx_intr_disable(struct rte_eth_dev *dev, uint16_t idx)
+mlx4_ibv_device_to_pci_addr(const struct ibv_device *device,
+ struct rte_pci_addr *pci_addr)
{
- struct priv *priv = dev->data->dev_private;
- struct rxq *rxq = (*priv->rxqs)[idx];
- struct ibv_cq *ev_cq;
- void *ev_ctx;
- int ret;
+ FILE *file;
+ char line[32];
+ MKSTR(path, "%s/device/uevent", device->ibdev_path);
- if (!rxq || !rxq->channel) {
- ret = EINVAL;
- } else {
- ret = ibv_get_cq_event(rxq->cq->channel, &ev_cq, &ev_ctx);
- if (ret || ev_cq != rxq->cq)
- ret = EINVAL;
+ file = fopen(path, "rb");
+ if (file == NULL) {
+ rte_errno = errno;
+ return -rte_errno;
+ }
+ 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="
+ "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
+ &pci_addr->domain,
+ &pci_addr->bus,
+ &pci_addr->devid,
+ &pci_addr->function) == 4) {
+ ret = 0;
+ break;
+ }
}
- if (ret)
- WARN("unable to disable interrupt on rx queue %d",
- idx);
- else
- ibv_ack_cq_events(rxq->cq, 1);
- return -ret;
+ fclose(file);
+ return 0;
}
/**
* Shared configuration data.
*
* @return
- * 0 on success, negative errno value on failure.
+ * 0 on success, negative errno value otherwise and rte_errno is set.
*/
static int
mlx4_arg_parse(const char *key, const char *val, struct mlx4_conf *conf)
errno = 0;
tmp = strtoul(val, NULL, 0);
if (errno) {
+ rte_errno = errno;
WARN("%s: \"%s\" is not a valid integer", key, val);
- return -errno;
+ return -rte_errno;
}
if (strcmp(MLX4_PMD_PORT_KVARG, key) == 0) {
- uint32_t ports = rte_log2_u32(conf->ports.present);
+ uint32_t ports = rte_log2_u32(conf->ports.present + 1);
if (tmp >= ports) {
ERROR("port index %lu outside range [0,%" PRIu32 ")",
return -EINVAL;
}
if (!(conf->ports.present & (1 << tmp))) {
+ rte_errno = EINVAL;
ERROR("invalid port index %lu", tmp);
- return -EINVAL;
+ return -rte_errno;
}
conf->ports.enabled |= 1 << tmp;
+ } else if (strcmp(MLX4_MR_EXT_MEMSEG_EN_KVARG, key) == 0) {
+ conf->mr_ext_memseg_en = !!tmp;
} else {
+ rte_errno = EINVAL;
WARN("%s: unknown parameter", key);
- return -EINVAL;
+ return -rte_errno;
}
return 0;
}
* Device arguments structure.
*
* @return
- * 0 on success, negative errno value on failure.
+ * 0 on success, negative errno value otherwise and rte_errno is set.
*/
static int
mlx4_args(struct rte_devargs *devargs, struct mlx4_conf *conf)
return 0;
kvlist = rte_kvargs_parse(devargs->args, pmd_mlx4_init_params);
if (kvlist == NULL) {
+ rte_errno = EINVAL;
ERROR("failed to parse kvargs");
- return -EINVAL;
+ return -rte_errno;
}
/* Process parameters. */
for (i = 0; pmd_mlx4_init_params[i]; ++i) {
- arg_count = rte_kvargs_count(kvlist, MLX4_PMD_PORT_KVARG);
+ arg_count = rte_kvargs_count(kvlist, pmd_mlx4_init_params[i]);
while (arg_count-- > 0) {
ret = rte_kvargs_process(kvlist,
- MLX4_PMD_PORT_KVARG,
+ pmd_mlx4_init_params[i],
(int (*)(const char *,
const char *,
void *))
return ret;
}
+/**
+ * Interpret RSS capabilities reported by device.
+ *
+ * This function returns the set of usable Verbs RSS hash fields, kernel
+ * quirks taken into account.
+ *
+ * @param ctx
+ * Verbs context.
+ * @param pd
+ * Verbs protection domain.
+ * @param device_attr_ex
+ * Extended device attributes to interpret.
+ *
+ * @return
+ * Usable RSS hash fields mask in Verbs format.
+ */
+static uint64_t
+mlx4_hw_rss_sup(struct ibv_context *ctx, struct ibv_pd *pd,
+ struct ibv_device_attr_ex *device_attr_ex)
+{
+ uint64_t hw_rss_sup = device_attr_ex->rss_caps.rx_hash_fields_mask;
+ struct ibv_cq *cq = NULL;
+ struct ibv_wq *wq = NULL;
+ struct ibv_rwq_ind_table *ind = NULL;
+ struct ibv_qp *qp = NULL;
+
+ if (!hw_rss_sup) {
+ WARN("no RSS capabilities reported; disabling support for UDP"
+ " RSS and inner VXLAN RSS");
+ return IBV_RX_HASH_SRC_IPV4 | IBV_RX_HASH_DST_IPV4 |
+ IBV_RX_HASH_SRC_IPV6 | IBV_RX_HASH_DST_IPV6 |
+ IBV_RX_HASH_SRC_PORT_TCP | IBV_RX_HASH_DST_PORT_TCP;
+ }
+ if (!(hw_rss_sup & IBV_RX_HASH_INNER))
+ return hw_rss_sup;
+ /*
+ * Although reported as supported, missing code in some Linux
+ * versions (v4.15, v4.16) prevents the creation of hash QPs with
+ * inner capability.
+ *
+ * There is no choice but to attempt to instantiate a temporary RSS
+ * context in order to confirm its support.
+ */
+ cq = mlx4_glue->create_cq(ctx, 1, NULL, NULL, 0);
+ wq = cq ? mlx4_glue->create_wq
+ (ctx,
+ &(struct ibv_wq_init_attr){
+ .wq_type = IBV_WQT_RQ,
+ .max_wr = 1,
+ .max_sge = 1,
+ .pd = pd,
+ .cq = cq,
+ }) : NULL;
+ ind = wq ? mlx4_glue->create_rwq_ind_table
+ (ctx,
+ &(struct ibv_rwq_ind_table_init_attr){
+ .log_ind_tbl_size = 0,
+ .ind_tbl = &wq,
+ .comp_mask = 0,
+ }) : NULL;
+ qp = ind ? mlx4_glue->create_qp_ex
+ (ctx,
+ &(struct ibv_qp_init_attr_ex){
+ .comp_mask =
+ (IBV_QP_INIT_ATTR_PD |
+ IBV_QP_INIT_ATTR_RX_HASH |
+ IBV_QP_INIT_ATTR_IND_TABLE),
+ .qp_type = IBV_QPT_RAW_PACKET,
+ .pd = pd,
+ .rwq_ind_tbl = ind,
+ .rx_hash_conf = {
+ .rx_hash_function = IBV_RX_HASH_FUNC_TOEPLITZ,
+ .rx_hash_key_len = MLX4_RSS_HASH_KEY_SIZE,
+ .rx_hash_key = mlx4_rss_hash_key_default,
+ .rx_hash_fields_mask = hw_rss_sup,
+ },
+ }) : NULL;
+ if (!qp) {
+ WARN("disabling unusable inner RSS capability due to kernel"
+ " quirk");
+ hw_rss_sup &= ~IBV_RX_HASH_INNER;
+ } else {
+ claim_zero(mlx4_glue->destroy_qp(qp));
+ }
+ if (ind)
+ claim_zero(mlx4_glue->destroy_rwq_ind_table(ind));
+ if (wq)
+ claim_zero(mlx4_glue->destroy_wq(wq));
+ if (cq)
+ claim_zero(mlx4_glue->destroy_cq(cq));
+ return hw_rss_sup;
+}
+
static struct rte_pci_driver mlx4_driver;
+/**
+ * PMD global initialization.
+ *
+ * Independent from individual device, this function initializes global
+ * per-PMD data structures distinguishing primary and secondary processes.
+ * Hence, each initialization is called once per a process.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx4_init_once(void)
+{
+ struct mlx4_shared_data *sd;
+ struct mlx4_local_data *ld = &mlx4_local_data;
+
+ if (mlx4_init_shared_data())
+ return -rte_errno;
+ sd = mlx4_shared_data;
+ assert(sd);
+ rte_spinlock_lock(&sd->lock);
+ switch (rte_eal_process_type()) {
+ case RTE_PROC_PRIMARY:
+ if (sd->init_done)
+ break;
+ LIST_INIT(&sd->mem_event_cb_list);
+ rte_rwlock_init(&sd->mem_event_rwlock);
+ rte_mem_event_callback_register("MLX4_MEM_EVENT_CB",
+ mlx4_mr_mem_event_cb, NULL);
+ mlx4_mp_init_primary();
+ sd->init_done = true;
+ break;
+ case RTE_PROC_SECONDARY:
+ if (ld->init_done)
+ break;
+ mlx4_mp_init_secondary();
+ ++sd->secondary_cnt;
+ ld->init_done = true;
+ break;
+ default:
+ break;
+ }
+ rte_spinlock_unlock(&sd->lock);
+ return 0;
+}
+
/**
* DPDK callback to register a PCI device.
*
* PCI device information.
*
* @return
- * 0 on success, negative errno value on failure.
+ * 0 on success, negative errno value otherwise and rte_errno is set.
*/
static int
mlx4_pci_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
int err = 0;
struct ibv_context *attr_ctx = NULL;
struct ibv_device_attr device_attr;
+ struct ibv_device_attr_ex device_attr_ex;
struct mlx4_conf conf = {
.ports.present = 0,
+ .mr_ext_memseg_en = 1,
};
unsigned int vf;
int i;
(void)pci_drv;
+ err = mlx4_init_once();
+ if (err) {
+ ERROR("unable to init PMD global data: %s",
+ strerror(rte_errno));
+ return -rte_errno;
+ }
assert(pci_drv == &mlx4_driver);
-
- list = ibv_get_device_list(&i);
+ list = mlx4_glue->get_device_list(&i);
if (list == NULL) {
- assert(errno);
- if (errno == ENOSYS)
+ rte_errno = errno;
+ assert(rte_errno);
+ if (rte_errno == ENOSYS)
ERROR("cannot list devices, is ib_uverbs loaded?");
- return -errno;
+ return -rte_errno;
}
assert(i >= 0);
/*
PCI_DEVICE_ID_MELLANOX_CONNECTX3VF);
INFO("PCI information matches, using device \"%s\" (VF: %s)",
list[i]->name, (vf ? "true" : "false"));
- attr_ctx = ibv_open_device(list[i]);
+ attr_ctx = mlx4_glue->open_device(list[i]);
err = errno;
break;
}
if (attr_ctx == NULL) {
- ibv_free_device_list(list);
+ mlx4_glue->free_device_list(list);
switch (err) {
case 0:
+ rte_errno = ENODEV;
ERROR("cannot access device, is mlx4_ib loaded?");
- return -ENODEV;
+ return -rte_errno;
case EINVAL:
+ rte_errno = EINVAL;
ERROR("cannot use device, are drivers up to date?");
- return -EINVAL;
+ return -rte_errno;
}
assert(err > 0);
- return -err;
+ rte_errno = err;
+ return -rte_errno;
}
ibv_dev = list[i];
-
DEBUG("device opened");
- if (ibv_query_device(attr_ctx, &device_attr)) {
+ if (mlx4_glue->query_device(attr_ctx, &device_attr)) {
err = ENODEV;
goto error;
}
INFO("%u port(s) detected", device_attr.phys_port_cnt);
-
conf.ports.present |= (UINT64_C(1) << device_attr.phys_port_cnt) - 1;
if (mlx4_args(pci_dev->device.devargs, &conf)) {
ERROR("failed to process device arguments");
/* Use all ports when none are defined */
if (!conf.ports.enabled)
conf.ports.enabled = conf.ports.present;
+ /* Retrieve extended device attributes. */
+ if (mlx4_glue->query_device_ex(attr_ctx, NULL, &device_attr_ex)) {
+ err = ENODEV;
+ goto error;
+ }
+ assert(device_attr.max_sge >= MLX4_MAX_SGE);
for (i = 0; i < device_attr.phys_port_cnt; i++) {
uint32_t port = i + 1; /* ports are indexed from one */
struct ibv_context *ctx = NULL;
struct ibv_port_attr port_attr;
struct ibv_pd *pd = NULL;
- struct priv *priv = NULL;
+ struct mlx4_priv *priv = NULL;
struct rte_eth_dev *eth_dev = NULL;
- struct ibv_exp_device_attr exp_device_attr;
- struct ether_addr mac;
+ struct rte_ether_addr mac;
+ char name[RTE_ETH_NAME_MAX_LEN];
/* If port is not enabled, skip. */
if (!(conf.ports.enabled & (1 << i)))
continue;
- exp_device_attr.comp_mask = IBV_EXP_DEVICE_ATTR_EXP_CAP_FLAGS;
- exp_device_attr.comp_mask |= IBV_EXP_DEVICE_ATTR_RSS_TBL_SZ;
-
DEBUG("using port %u", port);
-
- ctx = ibv_open_device(ibv_dev);
+ ctx = mlx4_glue->open_device(ibv_dev);
if (ctx == NULL) {
err = ENODEV;
goto port_error;
}
-
+ snprintf(name, sizeof(name), "%s port %u",
+ mlx4_glue->get_device_name(ibv_dev), port);
+ if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
+ eth_dev = rte_eth_dev_attach_secondary(name);
+ if (eth_dev == NULL) {
+ ERROR("can not attach rte ethdev");
+ rte_errno = ENOMEM;
+ err = rte_errno;
+ goto error;
+ }
+ priv = eth_dev->data->dev_private;
+ if (!priv->verbs_alloc_ctx.enabled) {
+ ERROR("secondary process is not supported"
+ " due to lack of external allocator"
+ " from Verbs");
+ rte_errno = ENOTSUP;
+ err = rte_errno;
+ goto error;
+ }
+ eth_dev->device = &pci_dev->device;
+ eth_dev->dev_ops = &mlx4_dev_sec_ops;
+ err = mlx4_proc_priv_init(eth_dev);
+ if (err)
+ goto error;
+ /* Receive command fd from primary process. */
+ err = mlx4_mp_req_verbs_cmd_fd(eth_dev);
+ if (err < 0) {
+ err = rte_errno;
+ goto error;
+ }
+ /* Remap UAR for Tx queues. */
+ err = mlx4_tx_uar_init_secondary(eth_dev, err);
+ if (err) {
+ err = rte_errno;
+ goto error;
+ }
+ /*
+ * Ethdev pointer is still required as input since
+ * the primary device is not accessible from the
+ * secondary process.
+ */
+ eth_dev->tx_pkt_burst = mlx4_tx_burst;
+ eth_dev->rx_pkt_burst = mlx4_rx_burst;
+ claim_zero(mlx4_glue->close_device(ctx));
+ rte_eth_copy_pci_info(eth_dev, pci_dev);
+ rte_eth_dev_probing_finish(eth_dev);
+ continue;
+ }
/* Check port status. */
- err = ibv_query_port(ctx, port, &port_attr);
+ err = mlx4_glue->query_port(ctx, port, &port_attr);
if (err) {
- ERROR("port query failed: %s", strerror(err));
err = ENODEV;
+ ERROR("port query failed: %s", strerror(err));
goto port_error;
}
-
if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) {
+ err = ENOTSUP;
ERROR("port %d is not configured in Ethernet mode",
port);
- err = EINVAL;
goto port_error;
}
-
if (port_attr.state != IBV_PORT_ACTIVE)
DEBUG("port %d is not active: \"%s\" (%d)",
- port, ibv_port_state_str(port_attr.state),
+ port, mlx4_glue->port_state_str(port_attr.state),
port_attr.state);
-
+ /* Make asynchronous FD non-blocking to handle interrupts. */
+ err = mlx4_fd_set_non_blocking(ctx->async_fd);
+ if (err) {
+ ERROR("cannot make asynchronous FD non-blocking: %s",
+ strerror(err));
+ goto port_error;
+ }
/* Allocate protection domain. */
- pd = ibv_alloc_pd(ctx);
+ pd = mlx4_glue->alloc_pd(ctx);
if (pd == NULL) {
- ERROR("PD allocation failure");
err = ENOMEM;
+ ERROR("PD allocation failure");
goto port_error;
}
-
/* from rte_ethdev.c */
priv = rte_zmalloc("ethdev private structure",
sizeof(*priv),
RTE_CACHE_LINE_SIZE);
if (priv == NULL) {
- ERROR("priv allocation failure");
err = ENOMEM;
+ ERROR("priv allocation failure");
goto port_error;
}
-
priv->ctx = ctx;
priv->device_attr = device_attr;
priv->port = port;
priv->pd = pd;
priv->mtu = ETHER_MTU;
- if (ibv_exp_query_device(ctx, &exp_device_attr)) {
- ERROR("ibv_exp_query_device() failed");
- err = ENODEV;
- goto port_error;
- }
- if ((exp_device_attr.exp_device_cap_flags &
- IBV_EXP_DEVICE_QPG) &&
- (exp_device_attr.exp_device_cap_flags &
- IBV_EXP_DEVICE_UD_RSS) &&
- (exp_device_attr.comp_mask &
- IBV_EXP_DEVICE_ATTR_RSS_TBL_SZ) &&
- (exp_device_attr.max_rss_tbl_sz > 0)) {
- priv->hw_qpg = 1;
- priv->hw_rss = 1;
- priv->max_rss_tbl_sz = exp_device_attr.max_rss_tbl_sz;
- } else {
- priv->hw_qpg = 0;
- priv->hw_rss = 0;
- priv->max_rss_tbl_sz = 0;
- }
- priv->hw_tss = !!(exp_device_attr.exp_device_cap_flags &
- IBV_EXP_DEVICE_UD_TSS);
- DEBUG("device flags: %s%s%s",
- (priv->hw_qpg ? "IBV_DEVICE_QPG " : ""),
- (priv->hw_tss ? "IBV_DEVICE_TSS " : ""),
- (priv->hw_rss ? "IBV_DEVICE_RSS " : ""));
- if (priv->hw_rss)
- DEBUG("maximum RSS indirection table size: %u",
- exp_device_attr.max_rss_tbl_sz);
-
- priv->hw_csum =
- ((exp_device_attr.exp_device_cap_flags &
- IBV_EXP_DEVICE_RX_CSUM_TCP_UDP_PKT) &&
- (exp_device_attr.exp_device_cap_flags &
- IBV_EXP_DEVICE_RX_CSUM_IP_PKT));
+ priv->vf = vf;
+ priv->hw_csum = !!(device_attr.device_cap_flags &
+ IBV_DEVICE_RAW_IP_CSUM);
DEBUG("checksum offloading is %ssupported",
(priv->hw_csum ? "" : "not "));
-
- priv->hw_csum_l2tun = !!(exp_device_attr.exp_device_cap_flags &
- IBV_EXP_DEVICE_VXLAN_SUPPORT);
+ /* Only ConnectX-3 Pro supports tunneling. */
+ priv->hw_csum_l2tun =
+ priv->hw_csum &&
+ (device_attr.vendor_part_id ==
+ PCI_DEVICE_ID_MELLANOX_CONNECTX3PRO);
DEBUG("L2 tunnel checksum offloads are %ssupported",
- (priv->hw_csum_l2tun ? "" : "not "));
-
- priv->inl_recv_size = mlx4_getenv_int("MLX4_INLINE_RECV_SIZE");
-
- if (priv->inl_recv_size) {
- exp_device_attr.comp_mask =
- IBV_EXP_DEVICE_ATTR_INLINE_RECV_SZ;
- if (ibv_exp_query_device(ctx, &exp_device_attr)) {
- INFO("Couldn't query device for inline-receive"
- " capabilities.");
- priv->inl_recv_size = 0;
- } else {
- if ((unsigned)exp_device_attr.inline_recv_sz <
- priv->inl_recv_size) {
- INFO("Max inline-receive (%d) <"
- " requested inline-receive (%u)",
- exp_device_attr.inline_recv_sz,
- priv->inl_recv_size);
- priv->inl_recv_size =
- exp_device_attr.inline_recv_sz;
- }
- }
- INFO("Set inline receive size to %u",
- priv->inl_recv_size);
- }
-
- priv->vf = vf;
+ priv->hw_csum_l2tun ? "" : "not ");
+ priv->hw_rss_sup = mlx4_hw_rss_sup(priv->ctx, priv->pd,
+ &device_attr_ex);
+ DEBUG("supported RSS hash fields mask: %016" PRIx64,
+ priv->hw_rss_sup);
+ priv->hw_rss_max_qps =
+ device_attr_ex.rss_caps.max_rwq_indirection_table_size;
+ DEBUG("MAX RSS queues %d", priv->hw_rss_max_qps);
+ priv->hw_fcs_strip = !!(device_attr_ex.raw_packet_caps &
+ IBV_RAW_PACKET_CAP_SCATTER_FCS);
+ DEBUG("FCS stripping toggling is %ssupported",
+ priv->hw_fcs_strip ? "" : "not ");
+ priv->tso =
+ ((device_attr_ex.tso_caps.max_tso > 0) &&
+ (device_attr_ex.tso_caps.supported_qpts &
+ (1 << IBV_QPT_RAW_PACKET)));
+ if (priv->tso)
+ priv->tso_max_payload_sz =
+ device_attr_ex.tso_caps.max_tso;
+ DEBUG("TSO is %ssupported",
+ priv->tso ? "" : "not ");
+ priv->mr_ext_memseg_en = conf.mr_ext_memseg_en;
/* Configure the first MAC address by default. */
- if (priv_get_mac(priv, &mac.addr_bytes)) {
+ err = mlx4_get_mac(priv, &mac.addr_bytes);
+ if (err) {
ERROR("cannot get MAC address, is mlx4_en loaded?"
- " (errno: %s)", strerror(errno));
- err = ENODEV;
+ " (error: %s)", strerror(err));
goto port_error;
}
INFO("port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
mac.addr_bytes[2], mac.addr_bytes[3],
mac.addr_bytes[4], mac.addr_bytes[5]);
/* Register MAC address. */
- priv->mac = mac;
- if (priv_mac_addr_add(priv))
- goto port_error;
+ priv->mac[0] = mac;
#ifndef NDEBUG
{
char ifname[IF_NAMESIZE];
- if (priv_get_ifname(priv, &ifname) == 0)
+ if (mlx4_get_ifname(priv, &ifname) == 0)
DEBUG("port %u ifname is \"%s\"",
priv->port, ifname);
else
}
#endif
/* Get actual MTU if possible. */
- priv_get_mtu(priv, &priv->mtu);
+ mlx4_mtu_get(priv, &priv->mtu);
DEBUG("port %u MTU is %u", priv->port, priv->mtu);
-
- /* from rte_ethdev.c */
- {
- char name[RTE_ETH_NAME_MAX_LEN];
-
- snprintf(name, sizeof(name), "%s port %u",
- ibv_get_device_name(ibv_dev), port);
- eth_dev = rte_eth_dev_allocate(name);
- }
+ eth_dev = rte_eth_dev_allocate(name);
if (eth_dev == NULL) {
- ERROR("can not allocate rte ethdev");
err = ENOMEM;
+ ERROR("can not allocate rte ethdev");
goto port_error;
}
-
eth_dev->data->dev_private = priv;
- eth_dev->data->mac_addrs = &priv->mac;
+ eth_dev->data->mac_addrs = priv->mac;
eth_dev->device = &pci_dev->device;
-
rte_eth_copy_pci_info(eth_dev, pci_dev);
-
- eth_dev->device->driver = &mlx4_driver.driver;
-
+ /* Initialize local interrupt handle for current port. */
+ priv->intr_handle = (struct rte_intr_handle){
+ .fd = -1,
+ .type = RTE_INTR_HANDLE_EXT,
+ };
/*
- * Copy and override interrupt handle to prevent it from
- * being shared between all ethdev instances of a given PCI
- * device. This is required to properly handle Rx interrupts
- * on all ports.
+ * Override ethdev interrupt handle pointer with private
+ * handle instead of that of the parent PCI device used by
+ * default. This prevents it from being shared between all
+ * ports of the same PCI device since each of them is
+ * associated its own Verbs context.
+ *
+ * Rx interrupts in particular require this as the PMD has
+ * no control over the registration of queue interrupts
+ * besides setting up eth_dev->intr_handle, the rest is
+ * handled by rte_intr_rx_ctl().
*/
- priv->intr_handle_dev = *eth_dev->intr_handle;
- eth_dev->intr_handle = &priv->intr_handle_dev;
-
- priv->dev = eth_dev;
+ eth_dev->intr_handle = &priv->intr_handle;
+ priv->dev_data = eth_dev->data;
eth_dev->dev_ops = &mlx4_dev_ops;
- eth_dev->data->dev_flags |= RTE_ETH_DEV_DETACHABLE;
-
+#ifdef HAVE_IBV_MLX4_BUF_ALLOCATORS
+ /* Hint libmlx4 to use PMD allocator for data plane resources */
+ struct mlx4dv_ctx_allocators alctr = {
+ .alloc = &mlx4_alloc_verbs_buf,
+ .free = &mlx4_free_verbs_buf,
+ .data = priv,
+ };
+ err = mlx4_glue->dv_set_context_attr
+ (ctx, MLX4DV_SET_CTX_ATTR_BUF_ALLOCATORS,
+ (void *)((uintptr_t)&alctr));
+ if (err)
+ WARN("Verbs external allocator is not supported");
+ else
+ priv->verbs_alloc_ctx.enabled = 1;
+#endif
/* Bring Ethernet device up. */
DEBUG("forcing Ethernet interface up");
- priv_set_flags(priv, ~IFF_UP, IFF_UP);
+ mlx4_dev_set_link_up(eth_dev);
/* Update link status once if waiting for LSC. */
if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
mlx4_link_update(eth_dev, 0);
+ /*
+ * Once the device is added to the list of memory event
+ * callback, its global MR cache table cannot be expanded
+ * on the fly because of deadlock. If it overflows, lookup
+ * should be done by searching MR list linearly, which is slow.
+ */
+ err = mlx4_mr_btree_init(&priv->mr.cache,
+ MLX4_MR_BTREE_CACHE_N * 2,
+ eth_dev->device->numa_node);
+ if (err) {
+ /* rte_errno is already set. */
+ goto port_error;
+ }
+ /* Add device to memory callback list. */
+ rte_rwlock_write_lock(&mlx4_shared_data->mem_event_rwlock);
+ LIST_INSERT_HEAD(&mlx4_shared_data->mem_event_cb_list,
+ priv, mem_event_cb);
+ rte_rwlock_write_unlock(&mlx4_shared_data->mem_event_rwlock);
+ rte_eth_dev_probing_finish(eth_dev);
continue;
-
port_error:
rte_free(priv);
+ if (eth_dev != NULL)
+ eth_dev->data->dev_private = NULL;
if (pd)
- claim_zero(ibv_dealloc_pd(pd));
+ claim_zero(mlx4_glue->dealloc_pd(pd));
if (ctx)
- claim_zero(ibv_close_device(ctx));
- if (eth_dev)
+ claim_zero(mlx4_glue->close_device(ctx));
+ if (eth_dev != NULL) {
+ /* mac_addrs must not be freed because part of dev_private */
+ eth_dev->data->mac_addrs = NULL;
rte_eth_dev_release_port(eth_dev);
+ }
break;
}
- if (i == device_attr.phys_port_cnt)
- return 0;
-
/*
* XXX if something went wrong in the loop above, there is a resource
* leak (ctx, pd, priv, dpdk ethdev) but we can do nothing about it as
* long as the dpdk does not provide a way to deallocate a ethdev and a
* way to enumerate the registered ethdevs to free the previous ones.
*/
-
error:
if (attr_ctx)
- claim_zero(ibv_close_device(attr_ctx));
+ claim_zero(mlx4_glue->close_device(attr_ctx));
if (list)
- ibv_free_device_list(list);
- assert(err >= 0);
+ mlx4_glue->free_device_list(list);
+ if (err)
+ rte_errno = err;
return -err;
}
RTE_PCI_DRV_INTR_RMV,
};
+#ifdef RTE_IBVERBS_LINK_DLOPEN
+
+/**
+ * Suffix RTE_EAL_PMD_PATH with "-glue".
+ *
+ * This function performs a sanity check on RTE_EAL_PMD_PATH before
+ * suffixing its last component.
+ *
+ * @param buf[out]
+ * Output buffer, should be large enough otherwise NULL is returned.
+ * @param size
+ * Size of @p out.
+ *
+ * @return
+ * Pointer to @p buf or @p NULL in case suffix cannot be appended.
+ */
+static char *
+mlx4_glue_path(char *buf, size_t size)
+{
+ static const char *const bad[] = { "/", ".", "..", NULL };
+ const char *path = RTE_EAL_PMD_PATH;
+ size_t len = strlen(path);
+ size_t off;
+ int i;
+
+ while (len && path[len - 1] == '/')
+ --len;
+ for (off = len; off && path[off - 1] != '/'; --off)
+ ;
+ for (i = 0; bad[i]; ++i)
+ if (!strncmp(path + off, bad[i], (int)(len - off)))
+ goto error;
+ i = snprintf(buf, size, "%.*s-glue", (int)len, path);
+ if (i == -1 || (size_t)i >= size)
+ goto error;
+ return buf;
+error:
+ ERROR("unable to append \"-glue\" to last component of"
+ " RTE_EAL_PMD_PATH (\"" RTE_EAL_PMD_PATH "\"),"
+ " please re-configure DPDK");
+ return NULL;
+}
+
+/**
+ * Initialization routine for run-time dependency on rdma-core.
+ */
+static int
+mlx4_glue_init(void)
+{
+ char glue_path[sizeof(RTE_EAL_PMD_PATH) - 1 + sizeof("-glue")];
+ const char *path[] = {
+ /*
+ * A basic security check is necessary before trusting
+ * MLX4_GLUE_PATH, which may override RTE_EAL_PMD_PATH.
+ */
+ (geteuid() == getuid() && getegid() == getgid() ?
+ getenv("MLX4_GLUE_PATH") : NULL),
+ /*
+ * When RTE_EAL_PMD_PATH is set, use its glue-suffixed
+ * variant, otherwise let dlopen() look up libraries on its
+ * own.
+ */
+ (*RTE_EAL_PMD_PATH ?
+ mlx4_glue_path(glue_path, sizeof(glue_path)) : ""),
+ };
+ unsigned int i = 0;
+ void *handle = NULL;
+ void **sym;
+ const char *dlmsg;
+
+ while (!handle && i != RTE_DIM(path)) {
+ const char *end;
+ size_t len;
+ int ret;
+
+ if (!path[i]) {
+ ++i;
+ continue;
+ }
+ end = strpbrk(path[i], ":;");
+ if (!end)
+ end = path[i] + strlen(path[i]);
+ len = end - path[i];
+ ret = 0;
+ do {
+ char name[ret + 1];
+
+ ret = snprintf(name, sizeof(name), "%.*s%s" MLX4_GLUE,
+ (int)len, path[i],
+ (!len || *(end - 1) == '/') ? "" : "/");
+ if (ret == -1)
+ break;
+ if (sizeof(name) != (size_t)ret + 1)
+ continue;
+ DEBUG("looking for rdma-core glue as \"%s\"", name);
+ handle = dlopen(name, RTLD_LAZY);
+ break;
+ } while (1);
+ path[i] = end + 1;
+ if (!*end)
+ ++i;
+ }
+ if (!handle) {
+ rte_errno = EINVAL;
+ dlmsg = dlerror();
+ if (dlmsg)
+ WARN("cannot load glue library: %s", dlmsg);
+ goto glue_error;
+ }
+ sym = dlsym(handle, "mlx4_glue");
+ if (!sym || !*sym) {
+ rte_errno = EINVAL;
+ dlmsg = dlerror();
+ if (dlmsg)
+ ERROR("cannot resolve glue symbol: %s", dlmsg);
+ goto glue_error;
+ }
+ mlx4_glue = *sym;
+ return 0;
+glue_error:
+ if (handle)
+ dlclose(handle);
+ WARN("cannot initialize PMD due to missing run-time"
+ " dependency on rdma-core libraries (libibverbs,"
+ " libmlx4)");
+ return -rte_errno;
+}
+
+#endif
+
/**
* Driver initialization routine.
*/
-RTE_INIT(rte_mlx4_pmd_init);
-static void
-rte_mlx4_pmd_init(void)
+RTE_INIT(rte_mlx4_pmd_init)
{
- RTE_BUILD_BUG_ON(sizeof(wr_id_t) != sizeof(uint64_t));
+ /*
+ * MLX4_DEVICE_FATAL_CLEANUP tells ibv_destroy functions we
+ * want to get success errno value in case of calling them
+ * when the device was removed.
+ */
+ setenv("MLX4_DEVICE_FATAL_CLEANUP", "1", 1);
/*
* RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
* huge pages. Calling ibv_fork_init() during init allows
* using this PMD, which is not supported in forked processes.
*/
setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
- ibv_fork_init();
+#ifdef RTE_IBVERBS_LINK_DLOPEN
+ if (mlx4_glue_init())
+ return;
+ assert(mlx4_glue);
+#endif
+#ifndef NDEBUG
+ /* Glue structure must not contain any NULL pointers. */
+ {
+ unsigned int i;
+
+ for (i = 0; i != sizeof(*mlx4_glue) / sizeof(void *); ++i)
+ assert(((const void *const *)mlx4_glue)[i]);
+ }
+#endif
+ if (strcmp(mlx4_glue->version, MLX4_GLUE_VERSION)) {
+ ERROR("rdma-core glue \"%s\" mismatch: \"%s\" is required",
+ mlx4_glue->version, MLX4_GLUE_VERSION);
+ return;
+ }
+ mlx4_glue->fork_init();
rte_pci_register(&mlx4_driver);
}
git.droids-corp.org / dpdk.git / blobdiff