diff options
Diffstat (limited to 'src/dpdk22/lib/librte_eal/common/eal_common_dev.c')
| -rw-r--r-- | src/dpdk22/lib/librte_eal/common/eal_common_dev.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/src/dpdk22/lib/librte_eal/common/eal_common_dev.c b/src/dpdk22/lib/librte_eal/common/eal_common_dev.c new file mode 100644 index 00000000..a8a4146c --- /dev/null +++ b/src/dpdk22/lib/librte_eal/common/eal_common_dev.c @@ -0,0 +1,152 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * Copyright(c) 2014 6WIND S.A. + * 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 <stdio.h> +#include <string.h> +#include <inttypes.h> +#include <sys/queue.h> + +#include <rte_dev.h> +#include <rte_devargs.h> +#include <rte_debug.h> +#include <rte_devargs.h> +#include <rte_log.h> + +#include "eal_private.h" + +/** Global list of device drivers. */ +static struct rte_driver_list dev_driver_list = + TAILQ_HEAD_INITIALIZER(dev_driver_list); + +/* register a driver */ +void +rte_eal_driver_register(struct rte_driver *driver) +{ + TAILQ_INSERT_TAIL(&dev_driver_list, driver, next); +} + +/* unregister a driver */ +void +rte_eal_driver_unregister(struct rte_driver *driver) +{ + TAILQ_REMOVE(&dev_driver_list, driver, next); +} + +int +rte_eal_vdev_init(const char *name, const char *args) +{ + struct rte_driver *driver; + + if (name == NULL) + return -EINVAL; + + TAILQ_FOREACH(driver, &dev_driver_list, next) { + if (driver->type != PMD_VDEV) + continue; + + /* + * search a driver prefix in virtual device name. + * For example, if the driver is pcap PMD, driver->name + * will be "eth_pcap", but "name" will be "eth_pcapN". + * So use strncmp to compare. + */ + if (!strncmp(driver->name, name, strlen(driver->name))) + return driver->init(name, args); + } + + RTE_LOG(ERR, EAL, "no driver found for %s\n", name); + return -EINVAL; +} + +int +rte_eal_dev_init(void) +{ + struct rte_devargs *devargs; + struct rte_driver *driver; + + /* + * Note that the dev_driver_list is populated here + * from calls made to rte_eal_driver_register from constructor functions + * embedded into PMD modules via the PMD_REGISTER_DRIVER macro + */ + + /* call the init function for each virtual device */ + TAILQ_FOREACH(devargs, &devargs_list, next) { + + if (devargs->type != RTE_DEVTYPE_VIRTUAL) + continue; + + if (rte_eal_vdev_init(devargs->virt.drv_name, + devargs->args)) { + RTE_LOG(ERR, EAL, "failed to initialize %s device\n", + devargs->virt.drv_name); + return -1; + } + } + + /* Once the vdevs are initalized, start calling all the pdev drivers */ + TAILQ_FOREACH(driver, &dev_driver_list, next) { + if (driver->type != PMD_PDEV) + continue; + /* PDEV drivers don't get passed any parameters */ + driver->init(NULL, NULL); + } + return 0; +} + +int +rte_eal_vdev_uninit(const char *name) +{ + struct rte_driver *driver; + + if (name == NULL) + return -EINVAL; + + TAILQ_FOREACH(driver, &dev_driver_list, next) { + if (driver->type != PMD_VDEV) + continue; + + /* + * search a driver prefix in virtual device name. + * For example, if the driver is pcap PMD, driver->name + * will be "eth_pcap", but "name" will be "eth_pcapN". + * So use strncmp to compare. + */ + if (!strncmp(driver->name, name, strlen(driver->name))) + return driver->uninit(name); + } + + RTE_LOG(ERR, EAL, "no driver found for %s\n", name); + return -EINVAL; +} |