diff options
Diffstat (limited to 'src/seastar/dpdk/drivers/net/ring')
| -rw-r--r-- | src/seastar/dpdk/drivers/net/ring/Makefile | 56 | ||||
| -rw-r--r-- | src/seastar/dpdk/drivers/net/ring/rte_eth_ring.c | 634 | ||||
| -rw-r--r-- | src/seastar/dpdk/drivers/net/ring/rte_eth_ring.h | 86 | ||||
| -rw-r--r-- | src/seastar/dpdk/drivers/net/ring/rte_eth_ring_version.map | 14 |
4 files changed, 790 insertions, 0 deletions
diff --git a/src/seastar/dpdk/drivers/net/ring/Makefile b/src/seastar/dpdk/drivers/net/ring/Makefile new file mode 100644 index 00000000..b7e1a378 --- /dev/null +++ b/src/seastar/dpdk/drivers/net/ring/Makefile @@ -0,0 +1,56 @@ +# BSD LICENSE +# +# Copyright(c) 2010-2014 Intel Corporation. All rights reserved. +# All rights reserved. +# +# 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 Intel Corporation nor the names of its +# contributors may be used to endorse or promote products derived +# from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +include $(RTE_SDK)/mk/rte.vars.mk + +# +# library name +# +LIB = librte_pmd_ring.a + +CFLAGS += -O3 +CFLAGS += $(WERROR_FLAGS) + +EXPORT_MAP := rte_eth_ring_version.map + +LIBABIVER := 2 + +# +# all source are stored in SRCS-y +# +SRCS-$(CONFIG_RTE_LIBRTE_PMD_RING) += rte_eth_ring.c + +# +# Export include files +# +SYMLINK-y-include += rte_eth_ring.h + +include $(RTE_SDK)/mk/rte.lib.mk diff --git a/src/seastar/dpdk/drivers/net/ring/rte_eth_ring.c b/src/seastar/dpdk/drivers/net/ring/rte_eth_ring.c new file mode 100644 index 00000000..87d22581 --- /dev/null +++ b/src/seastar/dpdk/drivers/net/ring/rte_eth_ring.c @@ -0,0 +1,634 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2015 Intel Corporation. All rights reserved. + * All rights reserved. + * + * 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 Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "rte_eth_ring.h" +#include <rte_mbuf.h> +#include <rte_ethdev.h> +#include <rte_malloc.h> +#include <rte_memcpy.h> +#include <rte_memzone.h> +#include <rte_string_fns.h> +#include <rte_vdev.h> +#include <rte_kvargs.h> +#include <rte_errno.h> + +#define ETH_RING_NUMA_NODE_ACTION_ARG "nodeaction" +#define ETH_RING_ACTION_CREATE "CREATE" +#define ETH_RING_ACTION_ATTACH "ATTACH" + +static const char *valid_arguments[] = { + ETH_RING_NUMA_NODE_ACTION_ARG, + NULL +}; + +enum dev_action { + DEV_CREATE, + DEV_ATTACH +}; + +struct ring_queue { + struct rte_ring *rng; + rte_atomic64_t rx_pkts; + rte_atomic64_t tx_pkts; + rte_atomic64_t err_pkts; +}; + +struct pmd_internals { + unsigned max_rx_queues; + unsigned max_tx_queues; + + struct ring_queue rx_ring_queues[RTE_PMD_RING_MAX_RX_RINGS]; + struct ring_queue tx_ring_queues[RTE_PMD_RING_MAX_TX_RINGS]; + + struct ether_addr address; + enum dev_action action; +}; + + +static struct rte_eth_link pmd_link = { + .link_speed = ETH_SPEED_NUM_10G, + .link_duplex = ETH_LINK_FULL_DUPLEX, + .link_status = ETH_LINK_DOWN, + .link_autoneg = ETH_LINK_SPEED_AUTONEG +}; + +static uint16_t +eth_ring_rx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs) +{ + void **ptrs = (void *)&bufs[0]; + struct ring_queue *r = q; + const uint16_t nb_rx = (uint16_t)rte_ring_dequeue_burst(r->rng, + ptrs, nb_bufs, NULL); + if (r->rng->flags & RING_F_SC_DEQ) + r->rx_pkts.cnt += nb_rx; + else + rte_atomic64_add(&(r->rx_pkts), nb_rx); + return nb_rx; +} + +static uint16_t +eth_ring_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs) +{ + void **ptrs = (void *)&bufs[0]; + struct ring_queue *r = q; + const uint16_t nb_tx = (uint16_t)rte_ring_enqueue_burst(r->rng, + ptrs, nb_bufs, NULL); + if (r->rng->flags & RING_F_SP_ENQ) { + r->tx_pkts.cnt += nb_tx; + r->err_pkts.cnt += nb_bufs - nb_tx; + } else { + rte_atomic64_add(&(r->tx_pkts), nb_tx); + rte_atomic64_add(&(r->err_pkts), nb_bufs - nb_tx); + } + return nb_tx; +} + +static int +eth_dev_configure(struct rte_eth_dev *dev __rte_unused) { return 0; } + +static int +eth_dev_start(struct rte_eth_dev *dev) +{ + dev->data->dev_link.link_status = ETH_LINK_UP; + return 0; +} + +static void +eth_dev_stop(struct rte_eth_dev *dev) +{ + dev->data->dev_link.link_status = ETH_LINK_DOWN; +} + +static int +eth_dev_set_link_down(struct rte_eth_dev *dev) +{ + dev->data->dev_link.link_status = ETH_LINK_DOWN; + return 0; +} + +static int +eth_dev_set_link_up(struct rte_eth_dev *dev) +{ + dev->data->dev_link.link_status = ETH_LINK_UP; + return 0; +} + +static int +eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id, + uint16_t nb_rx_desc __rte_unused, + unsigned int socket_id __rte_unused, + const struct rte_eth_rxconf *rx_conf __rte_unused, + struct rte_mempool *mb_pool __rte_unused) +{ + struct pmd_internals *internals = dev->data->dev_private; + dev->data->rx_queues[rx_queue_id] = &internals->rx_ring_queues[rx_queue_id]; + return 0; +} + +static int +eth_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id, + uint16_t nb_tx_desc __rte_unused, + unsigned int socket_id __rte_unused, + const struct rte_eth_txconf *tx_conf __rte_unused) +{ + struct pmd_internals *internals = dev->data->dev_private; + dev->data->tx_queues[tx_queue_id] = &internals->tx_ring_queues[tx_queue_id]; + return 0; +} + + +static void +eth_dev_info(struct rte_eth_dev *dev, + struct rte_eth_dev_info *dev_info) +{ + struct pmd_internals *internals = dev->data->dev_private; + dev_info->max_mac_addrs = 1; + dev_info->max_rx_pktlen = (uint32_t)-1; + dev_info->max_rx_queues = (uint16_t)internals->max_rx_queues; + dev_info->max_tx_queues = (uint16_t)internals->max_tx_queues; + dev_info->min_rx_bufsize = 0; +} + +static void +eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) +{ + unsigned i; + unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0; + const struct pmd_internals *internal = dev->data->dev_private; + + for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS && + i < dev->data->nb_rx_queues; i++) { + stats->q_ipackets[i] = internal->rx_ring_queues[i].rx_pkts.cnt; + rx_total += stats->q_ipackets[i]; + } + + for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS && + i < dev->data->nb_tx_queues; i++) { + stats->q_opackets[i] = internal->tx_ring_queues[i].tx_pkts.cnt; + stats->q_errors[i] = internal->tx_ring_queues[i].err_pkts.cnt; + tx_total += stats->q_opackets[i]; + tx_err_total += stats->q_errors[i]; + } + + stats->ipackets = rx_total; + stats->opackets = tx_total; + stats->oerrors = tx_err_total; +} + +static void +eth_stats_reset(struct rte_eth_dev *dev) +{ + unsigned i; + struct pmd_internals *internal = dev->data->dev_private; + for (i = 0; i < dev->data->nb_rx_queues; i++) + internal->rx_ring_queues[i].rx_pkts.cnt = 0; + for (i = 0; i < dev->data->nb_tx_queues; i++) { + internal->tx_ring_queues[i].tx_pkts.cnt = 0; + internal->tx_ring_queues[i].err_pkts.cnt = 0; + } +} + +static void +eth_mac_addr_remove(struct rte_eth_dev *dev __rte_unused, + uint32_t index __rte_unused) +{ +} + +static int +eth_mac_addr_add(struct rte_eth_dev *dev __rte_unused, + struct ether_addr *mac_addr __rte_unused, + uint32_t index __rte_unused, + uint32_t vmdq __rte_unused) +{ + return -ENOTSUP; +} + +static void +eth_queue_release(void *q __rte_unused) { ; } +static int +eth_link_update(struct rte_eth_dev *dev __rte_unused, + int wait_to_complete __rte_unused) { return 0; } + +static const struct eth_dev_ops ops = { + .dev_start = eth_dev_start, + .dev_stop = eth_dev_stop, + .dev_set_link_up = eth_dev_set_link_up, + .dev_set_link_down = eth_dev_set_link_down, + .dev_configure = eth_dev_configure, + .dev_infos_get = eth_dev_info, + .rx_queue_setup = eth_rx_queue_setup, + .tx_queue_setup = eth_tx_queue_setup, + .rx_queue_release = eth_queue_release, + .tx_queue_release = eth_queue_release, + .link_update = eth_link_update, + .stats_get = eth_stats_get, + .stats_reset = eth_stats_reset, + .mac_addr_remove = eth_mac_addr_remove, + .mac_addr_add = eth_mac_addr_add, +}; + +static struct rte_vdev_driver pmd_ring_drv; + +static int +do_eth_dev_ring_create(const char *name, + struct rte_ring * const rx_queues[], const unsigned nb_rx_queues, + struct rte_ring *const tx_queues[], const unsigned nb_tx_queues, + const unsigned numa_node, enum dev_action action) +{ + struct rte_eth_dev_data *data = NULL; + struct pmd_internals *internals = NULL; + struct rte_eth_dev *eth_dev = NULL; + unsigned i; + + RTE_LOG(INFO, PMD, "Creating rings-backed ethdev on numa socket %u\n", + numa_node); + + /* now do all data allocation - for eth_dev structure, dummy pci driver + * and internal (private) data + */ + data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node); + if (data == NULL) { + rte_errno = ENOMEM; + goto error; + } + + data->rx_queues = rte_zmalloc_socket(name, + sizeof(void *) * nb_rx_queues, 0, numa_node); + if (data->rx_queues == NULL) { + rte_errno = ENOMEM; + goto error; + } + + data->tx_queues = rte_zmalloc_socket(name, + sizeof(void *) * nb_tx_queues, 0, numa_node); + if (data->tx_queues == NULL) { + rte_errno = ENOMEM; + goto error; + } + + internals = rte_zmalloc_socket(name, sizeof(*internals), 0, numa_node); + if (internals == NULL) { + rte_errno = ENOMEM; + goto error; + } + + /* reserve an ethdev entry */ + eth_dev = rte_eth_dev_allocate(name); + if (eth_dev == NULL) { + rte_errno = ENOSPC; + goto error; + } + + /* now put it all together + * - store queue data in internals, + * - store numa_node info in eth_dev_data + * - point eth_dev_data to internals + * - and point eth_dev structure to new eth_dev_data structure + */ + /* NOTE: we'll replace the data element, of originally allocated eth_dev + * so the rings are local per-process */ + + internals->action = action; + internals->max_rx_queues = nb_rx_queues; + internals->max_tx_queues = nb_tx_queues; + for (i = 0; i < nb_rx_queues; i++) { + internals->rx_ring_queues[i].rng = rx_queues[i]; + data->rx_queues[i] = &internals->rx_ring_queues[i]; + } + for (i = 0; i < nb_tx_queues; i++) { + internals->tx_ring_queues[i].rng = tx_queues[i]; + data->tx_queues[i] = &internals->tx_ring_queues[i]; + } + + data->dev_private = internals; + data->port_id = eth_dev->data->port_id; + memmove(data->name, eth_dev->data->name, sizeof(data->name)); + data->nb_rx_queues = (uint16_t)nb_rx_queues; + data->nb_tx_queues = (uint16_t)nb_tx_queues; + data->dev_link = pmd_link; + data->mac_addrs = &internals->address; + + eth_dev->data = data; + eth_dev->dev_ops = &ops; + data->dev_flags = RTE_ETH_DEV_DETACHABLE; + data->kdrv = RTE_KDRV_NONE; + data->drv_name = pmd_ring_drv.driver.name; + data->numa_node = numa_node; + + /* finally assign rx and tx ops */ + eth_dev->rx_pkt_burst = eth_ring_rx; + eth_dev->tx_pkt_burst = eth_ring_tx; + + return data->port_id; + +error: + if (data) { + rte_free(data->rx_queues); + rte_free(data->tx_queues); + } + rte_free(data); + rte_free(internals); + + return -1; +} + +int +rte_eth_from_rings(const char *name, struct rte_ring *const rx_queues[], + const unsigned nb_rx_queues, + struct rte_ring *const tx_queues[], + const unsigned nb_tx_queues, + const unsigned numa_node) +{ + /* do some parameter checking */ + if (rx_queues == NULL && nb_rx_queues > 0) { + rte_errno = EINVAL; + return -1; + } + if (tx_queues == NULL && nb_tx_queues > 0) { + rte_errno = EINVAL; + return -1; + } + if (nb_rx_queues > RTE_PMD_RING_MAX_RX_RINGS) { + rte_errno = EINVAL; + return -1; + } + + return do_eth_dev_ring_create(name, rx_queues, nb_rx_queues, + tx_queues, nb_tx_queues, numa_node, DEV_ATTACH); +} + +int +rte_eth_from_ring(struct rte_ring *r) +{ + return rte_eth_from_rings(r->name, &r, 1, &r, 1, + r->memzone ? r->memzone->socket_id : SOCKET_ID_ANY); +} + +static int +eth_dev_ring_create(const char *name, const unsigned numa_node, + enum dev_action action) +{ + /* rx and tx are so-called from point of view of first port. + * They are inverted from the point of view of second port + */ + struct rte_ring *rxtx[RTE_PMD_RING_MAX_RX_RINGS]; + unsigned i; + char rng_name[RTE_RING_NAMESIZE]; + unsigned num_rings = RTE_MIN(RTE_PMD_RING_MAX_RX_RINGS, + RTE_PMD_RING_MAX_TX_RINGS); + + for (i = 0; i < num_rings; i++) { + snprintf(rng_name, sizeof(rng_name), "ETH_RXTX%u_%s", i, name); + rxtx[i] = (action == DEV_CREATE) ? + rte_ring_create(rng_name, 1024, numa_node, + RING_F_SP_ENQ|RING_F_SC_DEQ) : + rte_ring_lookup(rng_name); + if (rxtx[i] == NULL) + return -1; + } + + if (do_eth_dev_ring_create(name, rxtx, num_rings, rxtx, num_rings, + numa_node, action) < 0) + return -1; + + return 0; +} + +struct node_action_pair { + char name[PATH_MAX]; + unsigned node; + enum dev_action action; +}; + +struct node_action_list { + unsigned total; + unsigned count; + struct node_action_pair *list; +}; + +static int parse_kvlist (const char *key __rte_unused, const char *value, void *data) +{ + struct node_action_list *info = data; + int ret; + char *name; + char *action; + char *node; + char *end; + + name = strdup(value); + + ret = -EINVAL; + + if (!name) { + RTE_LOG(WARNING, PMD, "command line paramter is empty for ring pmd!\n"); + goto out; + } + + node = strchr(name, ':'); + if (!node) { + RTE_LOG(WARNING, PMD, "could not parse node value from %s", name); + goto out; + } + + *node = '\0'; + node++; + + action = strchr(node, ':'); + if (!action) { + RTE_LOG(WARNING, PMD, "could not action value from %s", node); + goto out; + } + + *action = '\0'; + action++; + + /* + * Need to do some sanity checking here + */ + + if (strcmp(action, ETH_RING_ACTION_ATTACH) == 0) + info->list[info->count].action = DEV_ATTACH; + else if (strcmp(action, ETH_RING_ACTION_CREATE) == 0) + info->list[info->count].action = DEV_CREATE; + else + goto out; + + errno = 0; + info->list[info->count].node = strtol(node, &end, 10); + + if ((errno != 0) || (*end != '\0')) { + RTE_LOG(WARNING, PMD, "node value %s is unparseable as a number\n", node); + goto out; + } + + snprintf(info->list[info->count].name, sizeof(info->list[info->count].name), "%s", name); + + info->count++; + + ret = 0; +out: + free(name); + return ret; +} + +static int +rte_pmd_ring_probe(struct rte_vdev_device *dev) +{ + const char *name, *params; + struct rte_kvargs *kvlist = NULL; + int ret = 0; + struct node_action_list *info = NULL; + + name = rte_vdev_device_name(dev); + params = rte_vdev_device_args(dev); + + RTE_LOG(INFO, PMD, "Initializing pmd_ring for %s\n", name); + + if (params == NULL || params[0] == '\0') { + ret = eth_dev_ring_create(name, rte_socket_id(), DEV_CREATE); + if (ret == -1) { + RTE_LOG(INFO, PMD, + "Attach to pmd_ring for %s\n", name); + ret = eth_dev_ring_create(name, rte_socket_id(), + DEV_ATTACH); + } + } + else { + kvlist = rte_kvargs_parse(params, valid_arguments); + + if (!kvlist) { + RTE_LOG(INFO, PMD, "Ignoring unsupported parameters when creating" + " rings-backed ethernet device\n"); + ret = eth_dev_ring_create(name, rte_socket_id(), + DEV_CREATE); + if (ret == -1) { + RTE_LOG(INFO, PMD, + "Attach to pmd_ring for %s\n", + name); + ret = eth_dev_ring_create(name, rte_socket_id(), + DEV_ATTACH); + } + return ret; + } else { + ret = rte_kvargs_count(kvlist, ETH_RING_NUMA_NODE_ACTION_ARG); + info = rte_zmalloc("struct node_action_list", + sizeof(struct node_action_list) + + (sizeof(struct node_action_pair) * ret), + 0); + if (!info) + goto out_free; + + info->total = ret; + info->list = (struct node_action_pair*)(info + 1); + + ret = rte_kvargs_process(kvlist, ETH_RING_NUMA_NODE_ACTION_ARG, + parse_kvlist, info); + + if (ret < 0) + goto out_free; + + for (info->count = 0; info->count < info->total; info->count++) { + ret = eth_dev_ring_create(info->list[info->count].name, + info->list[info->count].node, + info->list[info->count].action); + if ((ret == -1) && + (info->list[info->count].action == DEV_CREATE)) { + RTE_LOG(INFO, PMD, + "Attach to pmd_ring for %s\n", + name); + ret = eth_dev_ring_create(name, + info->list[info->count].node, + DEV_ATTACH); + } + } + } + } + +out_free: + rte_kvargs_free(kvlist); + rte_free(info); + return ret; +} + +static int +rte_pmd_ring_remove(struct rte_vdev_device *dev) +{ + const char *name = rte_vdev_device_name(dev); + struct rte_eth_dev *eth_dev = NULL; + struct pmd_internals *internals = NULL; + struct ring_queue *r = NULL; + uint16_t i; + + RTE_LOG(INFO, PMD, "Un-Initializing pmd_ring for %s\n", name); + + if (name == NULL) + return -EINVAL; + + /* find an ethdev entry */ + eth_dev = rte_eth_dev_allocated(name); + if (eth_dev == NULL) + return -ENODEV; + + eth_dev_stop(eth_dev); + + internals = eth_dev->data->dev_private; + if (internals->action == DEV_CREATE) { + /* + * it is only necessary to delete the rings in rx_queues because + * they are the same used in tx_queues + */ + for (i = 0; i < eth_dev->data->nb_rx_queues; i++) { + r = eth_dev->data->rx_queues[i]; + rte_ring_free(r->rng); + } + } + + rte_free(eth_dev->data->rx_queues); + rte_free(eth_dev->data->tx_queues); + rte_free(eth_dev->data->dev_private); + + rte_free(eth_dev->data); + + rte_eth_dev_release_port(eth_dev); + return 0; +} + +static struct rte_vdev_driver pmd_ring_drv = { + .probe = rte_pmd_ring_probe, + .remove = rte_pmd_ring_remove, +}; + +RTE_PMD_REGISTER_VDEV(net_ring, pmd_ring_drv); +RTE_PMD_REGISTER_ALIAS(net_ring, eth_ring); +RTE_PMD_REGISTER_PARAM_STRING(net_ring, + ETH_RING_NUMA_NODE_ACTION_ARG "=name:node:action(ATTACH|CREATE)"); diff --git a/src/seastar/dpdk/drivers/net/ring/rte_eth_ring.h b/src/seastar/dpdk/drivers/net/ring/rte_eth_ring.h new file mode 100644 index 00000000..4ff83eca --- /dev/null +++ b/src/seastar/dpdk/drivers/net/ring/rte_eth_ring.h @@ -0,0 +1,86 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * All rights reserved. + * + * 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 Intel Corporation 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. + */ + +#ifndef _RTE_ETH_RING_H_ +#define _RTE_ETH_RING_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +#include <rte_ring.h> + +/** + * Create a new ethdev port from a set of rings + * + * @param name + * name to be given to the new ethdev port + * @param rx_queues + * pointer to array of rte_rings to be used as RX queues + * @param nb_rx_queues + * number of elements in the rx_queues array + * @param tx_queues + * pointer to array of rte_rings to be used as TX queues + * @param nb_tx_queues + * number of elements in the tx_queues array + * @param numa_node + * the numa node on which the memory for this port is to be allocated + * @return + * the port number of the newly created the ethdev or -1 on error. + */ +int rte_eth_from_rings(const char *name, + struct rte_ring * const rx_queues[], + const unsigned nb_rx_queues, + struct rte_ring *const tx_queues[], + const unsigned nb_tx_queues, + const unsigned numa_node); + +/** + * Create a new ethdev port from a ring + * + * This function is a shortcut call for rte_eth_from_rings for the + * case where one wants to take a single rte_ring and use it as though + * it were an ethdev + * + * @param ring + * the ring to be used as an ethdev + * @return + * the port number of the newly created ethdev, or -1 on error + */ +int rte_eth_from_ring(struct rte_ring *r); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/src/seastar/dpdk/drivers/net/ring/rte_eth_ring_version.map b/src/seastar/dpdk/drivers/net/ring/rte_eth_ring_version.map new file mode 100644 index 00000000..1f785d94 --- /dev/null +++ b/src/seastar/dpdk/drivers/net/ring/rte_eth_ring_version.map @@ -0,0 +1,14 @@ +DPDK_2.0 { + global: + + rte_eth_from_rings; + + local: *; +}; + +DPDK_2.2 { + global: + + rte_eth_from_ring; + +} DPDK_2.0; |