-/*-
- * 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
+ */
+
+/**
+ * @file
+ * mlx4 driver initialization.
*/
-/* System headers. */
+#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 <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_dev.h>
-#include <rte_mbuf.h>
#include <rte_errno.h>
-#include <rte_mempool.h>
-#include <rte_malloc.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_common.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"
+static const char *MZ_MLX4_PMD_SHARED_DATA = "mlx4_pmd_shared_data";
+
+/* Shared memory between primary and secondary processes. */
+struct mlx4_shared_data *mlx4_shared_data;
+
+/* Spinlock for mlx4_shared_data allocation. */
+static rte_spinlock_t mlx4_shared_data_lock = RTE_SPINLOCK_INITIALIZER;
+
+/* Process local data for secondary processes. */
+static struct mlx4_local_data mlx4_local_data;
+
+/** Driver-specific log messages type. */
+int mlx4_logtype;
+
/** Configuration structure for device arguments. */
struct mlx4_conf {
struct {
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,
};
-/* 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, 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);
+static void mlx4_dev_stop(struct rte_eth_dev *dev);
/**
- * DPDK callback for Ethernet device configuration.
+ * Initialize shared data between primary and secondary process.
*
- * Prepare the driver for a given number of TX and RX queues.
- *
- * @param dev
- * Pointer to Ethernet device structure.
+ * A memzone is reserved by primary process and secondary processes attach to
+ * the memzone.
*
* @return
- * 0 on success, negative errno value otherwise and rte_errno is set.
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
-mlx4_dev_configure(struct rte_eth_dev *dev)
+mlx4_init_shared_data(void)
{
- 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;
-
- 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) {
- INFO("%p: Rx queues number update: %u -> %u",
- (void *)dev, priv->rxqs_n, rxqs_n);
- priv->rxqs_n = rxqs_n;
- }
- return 0;
-}
-
-/* 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, negative errno value otherwise and rte_errno is set.
- */
-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);
+ const struct rte_memzone *mz;
int ret = 0;
- if (elts == NULL) {
- ERROR("%p: can't allocate packets array", (void *)txq);
- ret = ENOMEM;
- goto error;
- }
- for (i = 0; (i != elts_n); ++i) {
- struct txq_elt *elt = &(*elts)[i];
-
- elt->buf = NULL;
- }
- 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;
- assert(ret == 0);
- return 0;
-error:
- rte_free(elts);
- DEBUG("%p: failed, freed everything", (void *)txq);
- assert(ret > 0);
- rte_errno = ret;
- return -rte_errno;
-}
-
-/**
- * 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;
-
- 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;
- 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.
- *
- * Destroy objects, free allocated memory and reset the structure for reuse.
- *
- * @param txq
- * Pointer to TX queue structure.
- */
-static void
-txq_cleanup(struct txq *txq)
-{
- size_t i;
-
- DEBUG("cleaning up %p", (void *)txq);
- txq_free_elts(txq);
- if (txq->qp != NULL)
- claim_zero(ibv_destroy_qp(txq->qp));
- if (txq->cq != NULL)
- claim_zero(ibv_destroy_cq(txq->cq));
- for (i = 0; (i != RTE_DIM(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));
-}
-
-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;
-}
-
-/**
- * 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 and rte_errno is set.
- */
-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;
- struct ibv_mr *mr;
-
- if (mlx4_check_mempool(mp, &start, &end) != 0) {
- rte_errno = EINVAL;
- 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));
- mr = ibv_reg_mr(pd,
- (void *)start,
- end - start,
- IBV_ACCESS_LOCAL_WRITE);
- if (!mr)
- rte_errno = errno ? errno : EINVAL;
- return mr;
-}
-
-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;
- mlx4_txq_mp2mr(txq, mp);
-}
-
-/**
- * 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, negative errno value otherwise and rte_errno is set.
- */
-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_qp_init_attr init;
- struct ibv_qp_attr mod;
- } attr;
- int ret;
-
- (void)conf; /* Thresholds configuration (ignored). */
- if (priv == NULL) {
- rte_errno = EINVAL;
- goto error;
- }
- if (desc == 0) {
- rte_errno = EINVAL;
- ERROR("%p: invalid number of Tx descriptors", (void *)dev);
- goto error;
- }
- /* MRs will be registered in mp2mr[] later. */
- tmpl.cq = ibv_create_cq(priv->ctx, desc, NULL, NULL, 0);
- if (tmpl.cq == NULL) {
- rte_errno = ENOMEM;
- ERROR("%p: CQ creation failure: %s",
- (void *)dev, strerror(rte_errno));
- 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_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 = 1,
- .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,
- };
- tmpl.qp = ibv_create_qp(priv->pd, &attr.init);
- if (tmpl.qp == NULL) {
- rte_errno = errno ? errno : EINVAL;
- ERROR("%p: QP creation failure: %s",
- (void *)dev, strerror(rte_errno));
- goto error;
- }
- /* ibv_create_qp() updates this value. */
- tmpl.max_inline = attr.init.cap.max_inline_data;
- attr.mod = (struct ibv_qp_attr){
- /* Move the QP to this state. */
- .qp_state = IBV_QPS_INIT,
- /* Primary port number. */
- .port_num = priv->port
- };
- ret = ibv_modify_qp(tmpl.qp, &attr.mod, IBV_QP_STATE | IBV_QP_PORT);
- if (ret) {
- rte_errno = ret;
- ERROR("%p: QP state to IBV_QPS_INIT failed: %s",
- (void *)dev, strerror(rte_errno));
- goto error;
- }
- ret = txq_alloc_elts(&tmpl, desc);
- if (ret) {
- rte_errno = ret;
- ERROR("%p: TXQ allocation failed: %s",
- (void *)dev, strerror(rte_errno));
- goto error;
- }
- attr.mod = (struct ibv_qp_attr){
- .qp_state = IBV_QPS_RTR
- };
- ret = ibv_modify_qp(tmpl.qp, &attr.mod, IBV_QP_STATE);
- if (ret) {
- rte_errno = ret;
- ERROR("%p: QP state to IBV_QPS_RTR failed: %s",
- (void *)dev, strerror(rte_errno));
- goto error;
- }
- attr.mod.qp_state = IBV_QPS_RTS;
- ret = ibv_modify_qp(tmpl.qp, &attr.mod, IBV_QP_STATE);
- if (ret) {
- rte_errno = ret;
- ERROR("%p: QP state to IBV_QPS_RTS failed: %s",
- (void *)dev, strerror(rte_errno));
- 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);
- return 0;
-error:
- ret = rte_errno;
- txq_cleanup(&tmpl);
- rte_errno = ret;
- assert(rte_errno > 0);
- return -rte_errno;
-}
-
-/**
- * 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 otherwise and rte_errno is set.
- */
-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;
-
- DEBUG("%p: configuring queue %u for %u descriptors",
- (void *)dev, idx, desc);
- if (idx >= priv->txqs_n) {
- rte_errno = EOVERFLOW;
- ERROR("%p: queue index out of range (%u >= %u)",
- (void *)dev, idx, priv->txqs_n);
- return -rte_errno;
- }
- if (txq != NULL) {
- DEBUG("%p: reusing already allocated queue index %u (%p)",
- (void *)dev, idx, (void *)txq);
- if (priv->started) {
- rte_errno = EEXIST;
- return -rte_errno;
- }
- (*priv->txqs)[idx] = NULL;
- txq_cleanup(txq);
- } else {
- txq = rte_calloc_socket("TXQ", 1, sizeof(*txq), 0, socket);
- if (txq == NULL) {
- rte_errno = ENOMEM;
- ERROR("%p: unable to allocate queue index %u",
- (void *)dev, idx);
- return -rte_errno;
- }
- }
- 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;
- }
- 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;
- 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);
-}
-
-/* RX queues handling. */
-
-/**
- * Allocate RX queue elements.
- *
- * @param rxq
- * Pointer to RX queue structure.
- * @param elts_n
- * Number of elements to allocate.
- *
- * @return
- * 0 on success, negative errno value otherwise and rte_errno is set.
- */
-static int
-rxq_alloc_elts(struct rxq *rxq, unsigned int elts_n)
-{
- unsigned int i;
- struct rxq_elt (*elts)[elts_n] =
- rte_calloc_socket("RXQ elements", 1, sizeof(*elts), 0,
- rxq->socket);
-
- if (elts == NULL) {
- rte_errno = ENOMEM;
- ERROR("%p: can't allocate packets array", (void *)rxq);
- 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 = rte_pktmbuf_alloc(rxq->mp);
-
- if (buf == NULL) {
- rte_errno = ENOMEM;
- ERROR("%p: empty mbuf pool", (void *)rxq);
- goto error;
+ 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));
}
- elt->buf = buf;
- wr->next = &(*elts)[(i + 1)].wr;
- wr->sg_list = sge;
- wr->num_sge = 1;
- /* Headroom is reserved by rte_pktmbuf_alloc(). */
- assert(buf->data_off == 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));
}
- /* 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 = elts;
- return 0;
error:
- if (elts != NULL) {
- for (i = 0; (i != RTE_DIM(*elts)); ++i)
- rte_pktmbuf_free_seg((*elts)[i].buf);
- rte_free(elts);
- }
- DEBUG("%p: failed, freed everything", (void *)rxq);
- assert(rte_errno > 0);
- return -rte_errno;
-}
-
-/**
- * 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;
-
- DEBUG("%p: freeing WRs", (void *)rxq);
- rxq->elts_n = 0;
- rxq->elts = NULL;
- if (elts == NULL)
- return;
- for (i = 0; (i != RTE_DIM(*elts)); ++i)
- rte_pktmbuf_free_seg((*elts)[i].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;
+ rte_spinlock_unlock(&mlx4_shared_data_lock);
+ return ret;
}
+#ifdef HAVE_IBV_MLX4_BUF_ALLOCATORS
/**
- * Register a MAC address.
- *
- * The MAC address is registered in queue 0.
+ * 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] size
+ * The size in bytes of the memory to allocate.
+ * @param[in] data
+ * A pointer to the callback data.
*
* @return
- * 0 on success, negative errno value otherwise and rte_errno is set.
+ * Allocated buffer, NULL otherwise and rte_errno is set.
*/
-static int
-priv_mac_addr_add(struct priv *priv)
+static void *
+mlx4_alloc_verbs_buf(size_t size, void *data)
{
- 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->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;
+ struct mlx4_priv *priv = data;
+ void *ret;
+ size_t alignment = sysconf(_SC_PAGESIZE);
+ unsigned int socket = SOCKET_ID_ANY;
- 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. */
- flow = ibv_create_flow(rxq->qp, attr);
- if (flow == NULL) {
- rte_errno = errno ? errno : EINVAL;
- ERROR("%p: flow configuration failed, errno=%d: %s",
- (void *)rxq, rte_errno, strerror(errno));
- return -rte_errno;
+ if (priv->verbs_alloc_ctx.type == MLX4_VERBS_ALLOC_TYPE_TX_QUEUE) {
+ const struct txq *txq = priv->verbs_alloc_ctx.obj;
+
+ 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;
+
+ socket = rxq->socket;
}
- assert(priv->mac_flow == NULL);
- priv->mac_flow = flow;
- return 0;
+ MLX4_ASSERT(data != NULL);
+ ret = rte_malloc_socket(__func__, size, alignment, socket);
+ if (!ret && size)
+ rte_errno = ENOMEM;
+ return ret;
}
/**
- * Clean up a RX queue.
- *
- * Destroy objects, free allocated memory and reset the structure for reuse.
+ * Verbs callback to free a memory.
*
- * @param rxq
- * Pointer to RX queue structure.
+ * @param[in] ptr
+ * A pointer to the memory to free.
+ * @param[in] data
+ * A pointer to the callback data.
*/
static void
-rxq_cleanup(struct rxq *rxq)
+mlx4_free_verbs_buf(void *ptr, void *data __rte_unused)
{
- DEBUG("cleaning up %p", (void *)rxq);
- rxq_free_elts(rxq);
- 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->mr != NULL)
- claim_zero(ibv_dereg_mr(rxq->mr));
- memset(rxq, 0, sizeof(*rxq));
+ MLX4_ASSERT(data != NULL);
+ rte_free(ptr);
}
+#endif
/**
- * Allocate a Queue Pair.
- * Optionally setup inline receive if supported.
+ * Initialize process private data structure.
*
- * @param priv
- * Pointer to private structure.
- * @param cq
- * Completion queue to associate with QP.
- * @param desc
- * Number of descriptors in QP (hint only).
+ * @param dev
+ * Pointer to Ethernet device structure.
*
* @return
- * QP pointer or NULL in case of error and rte_errno is set.
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
*/
-static struct ibv_qp *
-rxq_setup_qp(struct priv *priv, struct ibv_cq *cq, uint16_t desc)
+static int
+mlx4_proc_priv_init(struct rte_eth_dev *dev)
{
- struct ibv_qp *qp;
- struct ibv_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 = 1,
- },
- .qp_type = IBV_QPT_RAW_PACKET,
- };
+ struct mlx4_proc_priv *ppriv;
+ size_t ppriv_size;
- qp = ibv_create_qp(priv->pd, &attr);
- if (!qp)
- rte_errno = errno ? errno : EINVAL;
- return qp;
+ /*
+ * 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;
}
/**
- * Configure a RX queue.
+ * Un-initialize process private data structure.
*
* @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[in] conf
- * Thresholds parameters.
- * @param mp
- * Memory pool for buffer allocations.
- *
- * @return
- * 0 on success, negative errno value otherwise and rte_errno is set.
*/
-static int
-rxq_setup(struct rte_eth_dev *dev, struct rxq *rxq, uint16_t desc,
- unsigned int socket, const struct rte_eth_rxconf *conf,
- struct rte_mempool *mp)
+static void
+mlx4_proc_priv_uninit(struct rte_eth_dev *dev)
{
- struct priv *priv = dev->data->dev_private;
- struct rxq tmpl = {
- .priv = priv,
- .mp = mp,
- .socket = socket
- };
- struct ibv_qp_attr mod;
- struct ibv_recv_wr *bad_wr;
- unsigned int mb_len;
- int ret;
-
- (void)conf; /* Thresholds configuration (ignored). */
- mb_len = rte_pktmbuf_data_room_size(mp);
- if (desc == 0) {
- rte_errno = EINVAL;
- ERROR("%p: invalid number of Rx descriptors", (void *)dev);
- goto error;
- }
- /* 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)) {
- ;
- } else if (dev->data->dev_conf.rxmode.enable_scatter) {
- WARN("%p: scattered mode has been requested but is"
- " not supported, this may lead to packet loss",
- (void *)dev);
- } 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);
- }
- /* Use the entire RX mempool as the memory region. */
- tmpl.mr = mlx4_mp2mr(priv->pd, mp);
- if (tmpl.mr == NULL) {
- rte_errno = EINVAL;
- ERROR("%p: MR creation failure: %s",
- (void *)dev, strerror(rte_errno));
- goto error;
- }
- if (dev->data->dev_conf.intr_conf.rxq) {
- tmpl.channel = ibv_create_comp_channel(priv->ctx);
- if (tmpl.channel == NULL) {
- rte_errno = ENOMEM;
- ERROR("%p: Rx interrupt completion channel creation"
- " failure: %s",
- (void *)dev, strerror(rte_errno));
- goto error;
- }
- if (mlx4_fd_set_non_blocking(tmpl.channel->fd) < 0) {
- ERROR("%p: unable to make Rx interrupt completion"
- " channel non-blocking: %s",
- (void *)dev, strerror(rte_errno));
- goto error;
- }
- }
- tmpl.cq = ibv_create_cq(priv->ctx, desc, NULL, tmpl.channel, 0);
- if (tmpl.cq == NULL) {
- rte_errno = ENOMEM;
- ERROR("%p: CQ creation failure: %s",
- (void *)dev, strerror(rte_errno));
- 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);
- tmpl.qp = rxq_setup_qp(priv, tmpl.cq, desc);
- if (tmpl.qp == NULL) {
- ERROR("%p: QP creation failure: %s",
- (void *)dev, strerror(rte_errno));
- goto error;
- }
- mod = (struct ibv_qp_attr){
- /* Move the QP to this state. */
- .qp_state = IBV_QPS_INIT,
- /* Primary port number. */
- .port_num = priv->port
- };
- ret = ibv_modify_qp(tmpl.qp, &mod, IBV_QP_STATE | IBV_QP_PORT);
- if (ret) {
- rte_errno = ret;
- ERROR("%p: QP state to IBV_QPS_INIT failed: %s",
- (void *)dev, strerror(rte_errno));
- goto error;
- }
- ret = rxq_alloc_elts(&tmpl, desc);
- if (ret) {
- ERROR("%p: RXQ allocation failed: %s",
- (void *)dev, strerror(rte_errno));
- goto error;
- }
- ret = ibv_post_recv(tmpl.qp, &(*tmpl.elts)[0].wr, &bad_wr);
- if (ret) {
- rte_errno = ret;
- ERROR("%p: ibv_post_recv() failed for WR %p: %s",
- (void *)dev,
- (void *)bad_wr,
- strerror(rte_errno));
- goto error;
- }
- mod = (struct ibv_qp_attr){
- .qp_state = IBV_QPS_RTR
- };
- ret = ibv_modify_qp(tmpl.qp, &mod, IBV_QP_STATE);
- if (ret) {
- rte_errno = ret;
- ERROR("%p: QP state to IBV_QPS_RTR failed: %s",
- (void *)dev, strerror(rte_errno));
- goto error;
- }
- /* Save port ID. */
- tmpl.port_id = dev->data->port_id;
- DEBUG("%p: RTE port ID: %u", (void *)rxq, tmpl.port_id);
- /* 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);
- return 0;
-error:
- ret = rte_errno;
- rxq_cleanup(&tmpl);
- rte_errno = ret;
- assert(rte_errno > 0);
- return -rte_errno;
+ if (!dev->process_private)
+ return;
+ rte_free(dev->process_private);
+ dev->process_private = NULL;
}
/**
- * DPDK callback to configure a RX queue.
+ * DPDK callback for Ethernet device configuration.
*
* @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 otherwise and rte_errno is set.
*/
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)
+mlx4_dev_configure(struct rte_eth_dev *dev)
{
- struct priv *priv = dev->data->dev_private;
- struct rxq *rxq = (*priv->rxqs)[idx];
+ struct mlx4_priv *priv = dev->data->dev_private;
+ struct rte_flow_error error;
int ret;
- DEBUG("%p: configuring queue %u for %u descriptors",
- (void *)dev, idx, desc);
- if (idx >= priv->rxqs_n) {
- rte_errno = EOVERFLOW;
- ERROR("%p: queue index out of range (%u >= %u)",
- (void *)dev, idx, priv->rxqs_n);
- return -rte_errno;
+ if (dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG)
+ dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_RSS_HASH;
+
+ /* 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;
}
- if (rxq != NULL) {
- DEBUG("%p: reusing already allocated queue index %u (%p)",
- (void *)dev, idx, (void *)rxq);
- if (priv->started) {
- rte_errno = EEXIST;
- return -rte_errno;
- }
- (*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) {
- rte_errno = ENOMEM;
- ERROR("%p: unable to allocate queue index %u",
- (void *)dev, idx);
- return -rte_errno;
- }
+ ret = mlx4_intr_install(priv);
+ if (ret) {
+ ERROR("%p: interrupt handler installation failed",
+ (void *)dev);
+ goto exit;
}
- ret = rxq_setup(dev, rxq, desc, socket, 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. */
- dev->rx_pkt_burst = mlx4_rx_burst;
+ ret = mlx4_proc_priv_init(dev);
+ if (ret) {
+ ERROR("%p: process private data allocation failed",
+ (void *)dev);
+ goto exit;
}
+exit:
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;
- 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);
-}
-
/**
* DPDK callback to start the device.
*
- * Simulate device start by attaching all configured flows.
+ * Simulate device start by initializing common RSS resources and attaching
+ * all configured flows.
*
* @param dev
* Pointer to Ethernet device structure.
static int
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;
if (priv->started)
return 0;
DEBUG("%p: attaching configured flows to all RX queues", (void *)dev);
priv->started = 1;
- ret = priv_mac_addr_add(priv);
- if (ret)
+ ret = mlx4_rss_init(priv);
+ if (ret) {
+ ERROR("%p: cannot initialize RSS resources: %s",
+ (void *)dev, strerror(-ret));
goto err;
- ret = mlx4_intr_install(priv);
+ }
+#ifdef RTE_LIBRTE_MLX4_DEBUG
+ mlx4_mr_dump_dev(dev);
+#endif
+ ret = mlx4_rxq_intr_enable(priv);
if (ret) {
ERROR("%p: interrupt handler installation failed",
(void *)dev);
goto err;
}
- ret = mlx4_priv_flow_start(priv);
+ ret = mlx4_flow_sync(priv, &error);
if (ret) {
- ERROR("%p: flow start failed: %s",
- (void *)dev, strerror(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;
}
+ 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;
err:
- /* Rollback. */
- priv_mac_addr_del(priv);
- priv->started = 0;
+ mlx4_dev_stop(dev);
return ret;
}
static void
mlx4_dev_stop(struct rte_eth_dev *dev)
{
- struct priv *priv = dev->data->dev_private;
+ struct mlx4_priv *priv = dev->data->dev_private;
if (!priv->started)
return;
DEBUG("%p: detaching flows from all RX queues", (void *)dev);
priv->started = 0;
- mlx4_priv_flow_stop(priv);
- mlx4_intr_uninstall(priv);
- priv_mac_addr_del(priv);
+ 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);
}
/**
static void
mlx4_dev_close(struct rte_eth_dev *dev)
{
- struct priv *priv = dev->data->dev_private;
- void *tmp;
+ struct mlx4_priv *priv = dev->data->dev_private;
unsigned int i;
- if (priv == NULL)
- return;
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 = mlx4_rx_burst_removed;
dev->tx_pkt_burst = mlx4_tx_burst_removed;
- 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;
- }
+ 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(ibv_dealloc_pd(priv->pd));
- claim_zero(ibv_close_device(priv->ctx));
+ MLX4_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_ASSERT(priv->ctx == NULL);
mlx4_intr_uninstall(priv);
memset(priv, 0, sizeof(*priv));
}
-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 otherwise and rte_errno is set.
- */
-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)
-{
- switch (filter_type) {
- case RTE_ETH_FILTER_GENERIC:
- if (filter_op != RTE_ETH_FILTER_GET)
- break;
- *(const void **)arg = &mlx4_flow_ops;
- return 0;
- default:
- ERROR("%p: filter type (%d) not supported",
- (void *)dev, filter_type);
- break;
- }
- rte_errno = ENOTSUP;
- return -rte_errno;
-}
-
static const struct eth_dev_ops mlx4_dev_ops = {
.dev_configure = mlx4_dev_configure,
.dev_start = mlx4_dev_start,
.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,
.flow_ctrl_get = mlx4_flow_ctrl_get,
.flow_ctrl_set = mlx4_flow_ctrl_set,
.mtu_set = mlx4_mtu_set,
- .filter_ctrl = mlx4_dev_filter_ctrl,
+ .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,
};
/**
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 -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);
}
/* 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;
+ int ret = 0;
+
+ if (mlx4_init_shared_data())
+ return -rte_errno;
+ sd = mlx4_shared_data;
+ MLX4_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);
+ ret = mlx4_mp_init_primary();
+ if (ret)
+ goto out;
+ sd->init_done = 1;
+ break;
+ case RTE_PROC_SECONDARY:
+ if (ld->init_done)
+ break;
+ ret = mlx4_mp_init_secondary();
+ if (ret)
+ goto out;
+ ++sd->secondary_cnt;
+ ld->init_done = 1;
+ break;
+ default:
+ break;
+ }
+out:
+ rte_spinlock_unlock(&sd->lock);
+ return ret;
+}
+
/**
* DPDK callback to register a PCI device.
*
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;
+ char ifname[IF_NAMESIZE];
(void)pci_drv;
- assert(pci_drv == &mlx4_driver);
- list = ibv_get_device_list(&i);
+ err = mlx4_init_once();
+ if (err) {
+ ERROR("unable to init PMD global data: %s",
+ strerror(rte_errno));
+ return -rte_errno;
+ }
+ MLX4_ASSERT(pci_drv == &mlx4_driver);
+ list = mlx4_glue->get_device_list(&i);
if (list == NULL) {
rte_errno = errno;
- assert(rte_errno);
+ MLX4_ASSERT(rte_errno);
if (rte_errno == ENOSYS)
ERROR("cannot list devices, is ib_uverbs loaded?");
return -rte_errno;
}
- assert(i >= 0);
+ MLX4_ASSERT(i >= 0);
/*
* For each listed device, check related sysfs entry against
* the provided PCI ID.
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 use device, are drivers up to date?");
return -rte_errno;
}
- assert(err > 0);
+ MLX4_ASSERT(err > 0);
rte_errno = err;
return -rte_errno;
}
ibv_dev = list[i];
DEBUG("device opened");
- if (ibv_query_device(attr_ctx, &device_attr)) {
- rte_errno = ENODEV;
+ 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");
- rte_errno = EINVAL;
+ err = EINVAL;
goto error;
}
/* 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;
+ }
+ MLX4_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 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;
DEBUG("using port %u", port);
- ctx = ibv_open_device(ibv_dev);
+ ctx = mlx4_glue->open_device(ibv_dev);
if (ctx == NULL) {
- rte_errno = ENODEV;
+ 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) {
- rte_errno = err;
- ERROR("port query failed: %s", strerror(rte_errno));
+ err = ENODEV;
+ ERROR("port query failed: %s", strerror(err));
goto port_error;
}
if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) {
- rte_errno = ENOTSUP;
+ err = ENOTSUP;
ERROR("port %d is not configured in Ethernet mode",
port);
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. */
- if (mlx4_fd_set_non_blocking(ctx->async_fd) < 0) {
+ err = mlx4_fd_set_non_blocking(ctx->async_fd);
+ if (err) {
ERROR("cannot make asynchronous FD non-blocking: %s",
- strerror(rte_errno));
+ strerror(err));
goto port_error;
}
/* Allocate protection domain. */
- pd = ibv_alloc_pd(ctx);
+ pd = mlx4_glue->alloc_pd(ctx);
if (pd == NULL) {
- rte_errno = ENOMEM;
+ err = ENOMEM;
ERROR("PD allocation failure");
goto port_error;
}
sizeof(*priv),
RTE_CACHE_LINE_SIZE);
if (priv == NULL) {
- rte_errno = ENOMEM;
+ err = ENOMEM;
ERROR("priv allocation failure");
goto port_error;
}
priv->device_attr = device_attr;
priv->port = port;
priv->pd = pd;
- priv->mtu = ETHER_MTU;
+ priv->mtu = RTE_ETHER_MTU;
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 "));
+ /* 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->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 (mlx4_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?"
- " (rte_errno: %s)", strerror(rte_errno));
+ " (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;
-#ifndef NDEBUG
- {
- char ifname[IF_NAMESIZE];
-
- if (mlx4_get_ifname(priv, &ifname) == 0)
- DEBUG("port %u ifname is \"%s\"",
- priv->port, ifname);
- else
- DEBUG("port %u ifname is unknown", priv->port);
+ priv->mac[0] = mac;
+
+ if (mlx4_get_ifname(priv, &ifname) == 0) {
+ DEBUG("port %u ifname is \"%s\"",
+ priv->port, ifname);
+ priv->if_index = if_nametoindex(ifname);
+ } else {
+ DEBUG("port %u ifname is unknown", priv->port);
}
-#endif
+
/* Get actual MTU if possible. */
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) {
+ err = ENOMEM;
ERROR("can not allocate rte ethdev");
- rte_errno = ENOMEM;
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,
* handled by rte_intr_rx_ctl().
*/
eth_dev->intr_handle = &priv->intr_handle;
- priv->dev = eth_dev;
+ 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");
- mlx4_dev_set_link_up(priv->dev);
+ 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
*/
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(rte_errno >= 0);
- return -rte_errno;
+ mlx4_glue->free_device_list(list);
+ if (err)
+ rte_errno = err;
+ return -err;
}
static const struct rte_pci_id mlx4_pci_id_map[] = {
},
.id_table = mlx4_pci_id_map,
.probe = mlx4_pci_probe,
- .drv_flags = RTE_PCI_DRV_INTR_LSC |
- RTE_PCI_DRV_INTR_RMV,
+ .drv_flags = RTE_PCI_DRV_INTR_LSC | 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)
{
+ /* Initialize driver log type. */
+ mlx4_logtype = rte_log_register("pmd.net.mlx4");
+ if (mlx4_logtype >= 0)
+ rte_log_set_level(mlx4_logtype, RTE_LOG_NOTICE);
+
+ /*
+ * 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;
+ MLX4_ASSERT(mlx4_glue);
+#endif
+#ifdef RTE_LIBRTE_MLX4_DEBUG
+ /* Glue structure must not contain any NULL pointers. */
+ {
+ unsigned int i;
+
+ for (i = 0; i != sizeof(*mlx4_glue) / sizeof(void *); ++i)
+ MLX4_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