diff options
Diffstat (limited to 'drivers/net/kni')
| -rw-r--r-- | drivers/net/kni/Makefile | 56 | ||||
| -rw-r--r-- | drivers/net/kni/rte_eth_kni.c | 510 | ||||
| -rw-r--r-- | drivers/net/kni/rte_pmd_kni_version.map | 4 |
3 files changed, 570 insertions, 0 deletions
diff --git a/drivers/net/kni/Makefile b/drivers/net/kni/Makefile new file mode 100644 index 00000000..46a1ad08 --- /dev/null +++ b/drivers/net/kni/Makefile @@ -0,0 +1,56 @@ +# BSD LICENSE +# +# Copyright(c) 2017 Intel Corporation. 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_kni.a + +CFLAGS += -O3 +CFLAGS += $(WERROR_FLAGS) +LDLIBS += -lpthread + +EXPORT_MAP := rte_pmd_kni_version.map + +LIBABIVER := 1 + +# +# all source are stored in SRCS-y +# +SRCS-$(CONFIG_RTE_LIBRTE_PMD_KNI) += rte_eth_kni.c + +# +# Export include files +# +SYMLINK-y-include += + +include $(RTE_SDK)/mk/rte.lib.mk diff --git a/drivers/net/kni/rte_eth_kni.c b/drivers/net/kni/rte_eth_kni.c new file mode 100644 index 00000000..f688d919 --- /dev/null +++ b/drivers/net/kni/rte_eth_kni.c @@ -0,0 +1,510 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2017 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 <fcntl.h> +#include <pthread.h> +#include <unistd.h> + +#include <rte_ethdev.h> +#include <rte_ethdev_vdev.h> +#include <rte_kni.h> +#include <rte_kvargs.h> +#include <rte_malloc.h> +#include <rte_vdev.h> + +/* Only single queue supported */ +#define KNI_MAX_QUEUE_PER_PORT 1 + +#define MAX_PACKET_SZ 2048 +#define MAX_KNI_PORTS 8 + +#define ETH_KNI_NO_REQUEST_THREAD_ARG "no_request_thread" +static const char * const valid_arguments[] = { + ETH_KNI_NO_REQUEST_THREAD_ARG, + NULL +}; + +struct eth_kni_args { + int no_request_thread; +}; + +struct pmd_queue_stats { + uint64_t pkts; + uint64_t bytes; + uint64_t err_pkts; +}; + +struct pmd_queue { + struct pmd_internals *internals; + struct rte_mempool *mb_pool; + + struct pmd_queue_stats rx; + struct pmd_queue_stats tx; +}; + +struct pmd_internals { + struct rte_kni *kni; + int is_kni_started; + + pthread_t thread; + int stop_thread; + int no_request_thread; + + struct ether_addr eth_addr; + + struct pmd_queue rx_queues[KNI_MAX_QUEUE_PER_PORT]; + struct pmd_queue tx_queues[KNI_MAX_QUEUE_PER_PORT]; +}; + +static const 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 int is_kni_initialized; + +static uint16_t +eth_kni_rx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs) +{ + struct pmd_queue *kni_q = q; + struct rte_kni *kni = kni_q->internals->kni; + uint16_t nb_pkts; + + nb_pkts = rte_kni_rx_burst(kni, bufs, nb_bufs); + + kni_q->rx.pkts += nb_pkts; + kni_q->rx.err_pkts += nb_bufs - nb_pkts; + + return nb_pkts; +} + +static uint16_t +eth_kni_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs) +{ + struct pmd_queue *kni_q = q; + struct rte_kni *kni = kni_q->internals->kni; + uint16_t nb_pkts; + + nb_pkts = rte_kni_tx_burst(kni, bufs, nb_bufs); + + kni_q->tx.pkts += nb_pkts; + kni_q->tx.err_pkts += nb_bufs - nb_pkts; + + return nb_pkts; +} + +static void * +kni_handle_request(void *param) +{ + struct pmd_internals *internals = param; +#define MS 1000 + + while (!internals->stop_thread) { + rte_kni_handle_request(internals->kni); + usleep(500 * MS); + } + + return param; +} + +static int +eth_kni_start(struct rte_eth_dev *dev) +{ + struct pmd_internals *internals = dev->data->dev_private; + uint16_t port_id = dev->data->port_id; + struct rte_mempool *mb_pool; + struct rte_kni_conf conf; + const char *name = dev->data->name + 4; /* remove net_ */ + + snprintf(conf.name, RTE_KNI_NAMESIZE, "%s", name); + conf.force_bind = 0; + conf.group_id = port_id; + conf.mbuf_size = MAX_PACKET_SZ; + mb_pool = internals->rx_queues[0].mb_pool; + + internals->kni = rte_kni_alloc(mb_pool, &conf, NULL); + if (internals->kni == NULL) { + RTE_LOG(ERR, PMD, + "Fail to create kni interface for port: %d\n", + port_id); + return -1; + } + + return 0; +} + +static int +eth_kni_dev_start(struct rte_eth_dev *dev) +{ + struct pmd_internals *internals = dev->data->dev_private; + int ret; + + if (internals->is_kni_started == 0) { + ret = eth_kni_start(dev); + if (ret) + return -1; + internals->is_kni_started = 1; + } + + if (internals->no_request_thread == 0) { + ret = pthread_create(&internals->thread, NULL, + kni_handle_request, internals); + if (ret) { + RTE_LOG(ERR, PMD, + "Fail to create kni request thread\n"); + return -1; + } + } + + dev->data->dev_link.link_status = 1; + + return 0; +} + +static void +eth_kni_dev_stop(struct rte_eth_dev *dev) +{ + struct pmd_internals *internals = dev->data->dev_private; + int ret; + + if (internals->no_request_thread == 0) { + internals->stop_thread = 1; + + ret = pthread_cancel(internals->thread); + if (ret) + RTE_LOG(ERR, PMD, "Can't cancel the thread\n"); + + ret = pthread_join(internals->thread, NULL); + if (ret) + RTE_LOG(ERR, PMD, "Can't join the thread\n"); + + internals->stop_thread = 0; + } + + dev->data->dev_link.link_status = 0; +} + +static int +eth_kni_dev_configure(struct rte_eth_dev *dev __rte_unused) +{ + return 0; +} + +static void +eth_kni_dev_info(struct rte_eth_dev *dev __rte_unused, + struct rte_eth_dev_info *dev_info) +{ + dev_info->max_mac_addrs = 1; + dev_info->max_rx_pktlen = UINT32_MAX; + dev_info->max_rx_queues = KNI_MAX_QUEUE_PER_PORT; + dev_info->max_tx_queues = KNI_MAX_QUEUE_PER_PORT; + dev_info->min_rx_bufsize = 0; + dev_info->pci_dev = NULL; +} + +static int +eth_kni_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) +{ + struct pmd_internals *internals = dev->data->dev_private; + struct pmd_queue *q; + + q = &internals->rx_queues[rx_queue_id]; + q->internals = internals; + q->mb_pool = mb_pool; + + dev->data->rx_queues[rx_queue_id] = q; + + return 0; +} + +static int +eth_kni_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; + struct pmd_queue *q; + + q = &internals->tx_queues[tx_queue_id]; + q->internals = internals; + + dev->data->tx_queues[tx_queue_id] = q; + + return 0; +} + +static void +eth_kni_queue_release(void *q __rte_unused) +{ +} + +static int +eth_kni_link_update(struct rte_eth_dev *dev __rte_unused, + int wait_to_complete __rte_unused) +{ + return 0; +} + +static void +eth_kni_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) +{ + unsigned long rx_packets_total = 0, rx_bytes_total = 0; + unsigned long tx_packets_total = 0, tx_bytes_total = 0; + struct rte_eth_dev_data *data = dev->data; + unsigned long tx_packets_err_total = 0; + unsigned int i, num_stats; + struct pmd_queue *q; + + num_stats = RTE_MIN((unsigned int)RTE_ETHDEV_QUEUE_STAT_CNTRS, + data->nb_rx_queues); + for (i = 0; i < num_stats; i++) { + q = data->rx_queues[i]; + stats->q_ipackets[i] = q->rx.pkts; + stats->q_ibytes[i] = q->rx.bytes; + rx_packets_total += stats->q_ipackets[i]; + rx_bytes_total += stats->q_ibytes[i]; + } + + num_stats = RTE_MIN((unsigned int)RTE_ETHDEV_QUEUE_STAT_CNTRS, + data->nb_tx_queues); + for (i = 0; i < num_stats; i++) { + q = data->tx_queues[i]; + stats->q_opackets[i] = q->tx.pkts; + stats->q_obytes[i] = q->tx.bytes; + stats->q_errors[i] = q->tx.err_pkts; + tx_packets_total += stats->q_opackets[i]; + tx_bytes_total += stats->q_obytes[i]; + tx_packets_err_total += stats->q_errors[i]; + } + + stats->ipackets = rx_packets_total; + stats->ibytes = rx_bytes_total; + stats->opackets = tx_packets_total; + stats->obytes = tx_bytes_total; + stats->oerrors = tx_packets_err_total; +} + +static void +eth_kni_stats_reset(struct rte_eth_dev *dev) +{ + struct rte_eth_dev_data *data = dev->data; + struct pmd_queue *q; + unsigned int i; + + for (i = 0; i < data->nb_rx_queues; i++) { + q = data->rx_queues[i]; + q->rx.pkts = 0; + q->rx.bytes = 0; + } + for (i = 0; i < data->nb_tx_queues; i++) { + q = data->tx_queues[i]; + q->tx.pkts = 0; + q->tx.bytes = 0; + q->tx.err_pkts = 0; + } +} + +static const struct eth_dev_ops eth_kni_ops = { + .dev_start = eth_kni_dev_start, + .dev_stop = eth_kni_dev_stop, + .dev_configure = eth_kni_dev_configure, + .dev_infos_get = eth_kni_dev_info, + .rx_queue_setup = eth_kni_rx_queue_setup, + .tx_queue_setup = eth_kni_tx_queue_setup, + .rx_queue_release = eth_kni_queue_release, + .tx_queue_release = eth_kni_queue_release, + .link_update = eth_kni_link_update, + .stats_get = eth_kni_stats_get, + .stats_reset = eth_kni_stats_reset, +}; + +static struct rte_vdev_driver eth_kni_drv; + +static struct rte_eth_dev * +eth_kni_create(struct rte_vdev_device *vdev, + struct eth_kni_args *args, + unsigned int numa_node) +{ + struct pmd_internals *internals; + struct rte_eth_dev_data *data; + struct rte_eth_dev *eth_dev; + const char *name; + + RTE_LOG(INFO, PMD, "Creating kni ethdev on numa socket %u\n", + numa_node); + + name = rte_vdev_device_name(vdev); + data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node); + if (data == NULL) + return NULL; + + /* reserve an ethdev entry */ + eth_dev = rte_eth_vdev_allocate(vdev, sizeof(*internals)); + if (eth_dev == NULL) { + rte_free(data); + return NULL; + } + + internals = eth_dev->data->dev_private; + rte_memcpy(data, eth_dev->data, sizeof(*data)); + data->nb_rx_queues = 1; + data->nb_tx_queues = 1; + data->dev_link = pmd_link; + data->mac_addrs = &internals->eth_addr; + + eth_random_addr(internals->eth_addr.addr_bytes); + + eth_dev->data = data; + eth_dev->dev_ops = ð_kni_ops; + + data->dev_flags = RTE_ETH_DEV_DETACHABLE; + + internals->no_request_thread = args->no_request_thread; + + return eth_dev; +} + +static int +kni_init(void) +{ + if (is_kni_initialized == 0) + rte_kni_init(MAX_KNI_PORTS); + + is_kni_initialized++; + + return 0; +} + +static int +eth_kni_kvargs_process(struct eth_kni_args *args, const char *params) +{ + struct rte_kvargs *kvlist; + + kvlist = rte_kvargs_parse(params, valid_arguments); + if (kvlist == NULL) + return -1; + + memset(args, 0, sizeof(struct eth_kni_args)); + + if (rte_kvargs_count(kvlist, ETH_KNI_NO_REQUEST_THREAD_ARG) == 1) + args->no_request_thread = 1; + + rte_kvargs_free(kvlist); + + return 0; +} + +static int +eth_kni_probe(struct rte_vdev_device *vdev) +{ + struct rte_eth_dev *eth_dev; + struct eth_kni_args args; + const char *name; + const char *params; + int ret; + + name = rte_vdev_device_name(vdev); + params = rte_vdev_device_args(vdev); + RTE_LOG(INFO, PMD, "Initializing eth_kni for %s\n", name); + + ret = eth_kni_kvargs_process(&args, params); + if (ret < 0) + return ret; + + ret = kni_init(); + if (ret < 0) + return ret; + + eth_dev = eth_kni_create(vdev, &args, rte_socket_id()); + if (eth_dev == NULL) + goto kni_uninit; + + eth_dev->rx_pkt_burst = eth_kni_rx; + eth_dev->tx_pkt_burst = eth_kni_tx; + + return 0; + +kni_uninit: + is_kni_initialized--; + if (is_kni_initialized == 0) + rte_kni_close(); + return -1; +} + +static int +eth_kni_remove(struct rte_vdev_device *vdev) +{ + struct rte_eth_dev *eth_dev; + struct pmd_internals *internals; + const char *name; + + name = rte_vdev_device_name(vdev); + RTE_LOG(INFO, PMD, "Un-Initializing eth_kni for %s\n", name); + + /* find the ethdev entry */ + eth_dev = rte_eth_dev_allocated(name); + if (eth_dev == NULL) + return -1; + + eth_kni_dev_stop(eth_dev); + + internals = eth_dev->data->dev_private; + rte_kni_release(internals->kni); + + rte_free(internals); + rte_free(eth_dev->data); + + rte_eth_dev_release_port(eth_dev); + + is_kni_initialized--; + if (is_kni_initialized == 0) + rte_kni_close(); + + return 0; +} + +static struct rte_vdev_driver eth_kni_drv = { + .probe = eth_kni_probe, + .remove = eth_kni_remove, +}; + +RTE_PMD_REGISTER_VDEV(net_kni, eth_kni_drv); +RTE_PMD_REGISTER_PARAM_STRING(net_kni, ETH_KNI_NO_REQUEST_THREAD_ARG "=<int>"); diff --git a/drivers/net/kni/rte_pmd_kni_version.map b/drivers/net/kni/rte_pmd_kni_version.map new file mode 100644 index 00000000..8591cc0b --- /dev/null +++ b/drivers/net/kni/rte_pmd_kni_version.map @@ -0,0 +1,4 @@ +DPDK_17.05 { + + local: *; +}; |