examples/multi_process/hotplug_mp/commands.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2018-2023 Intel Corporation.
 */

#include <rte_bus.h>
#include <rte_ethdev.h>
#include "commands.h"

void cmd_help_parsed(__rte_unused void *parsed_result,
                struct cmdline *cl,
                __rte_unused void *data)
{
    cmdline_printf(cl,
               "commands:\n"
               "- attach <devargs>\n"
               "- detach <devargs>\n"
               "- list\n\n");
}

void
cmd_quit_parsed(__rte_unused void *parsed_result,
                struct cmdline *cl,
                __rte_unused void *data)
{
    cmdline_quit(cl);
}

void
cmd_list_parsed(__rte_unused void *parsed_result,
                struct cmdline *cl,
                __rte_unused void *data)
{
    uint16_t port_id;
    char dev_name[RTE_DEV_NAME_MAX_LEN];

    cmdline_printf(cl, "list all etherdev\n");

    RTE_ETH_FOREACH_DEV(port_id) {
        rte_eth_dev_get_name_by_port(port_id, dev_name);
        if (strlen(dev_name) > 0)
            cmdline_printf(cl, "%d\t%s\n", port_id, dev_name);
        else
            printf("empty dev_name is not expected!\n");
    }
}

void
cmd_attach_parsed(void *parsed_result,
                  struct cmdline *cl,
                  __rte_unused void *data)
{
    struct cmd_attach_result *res = parsed_result;
    struct rte_devargs da;

    memset(&da, 0, sizeof(da));

    if (rte_devargs_parsef(&da, "%s", res->devargs)) {
        cmdline_printf(cl, "cannot parse devargs\n");
        return;
    }

    if (!rte_eal_hotplug_add(rte_bus_name(da.bus), da.name, da.args))
        cmdline_printf(cl, "attached device %s\n", da.name);
    else
        cmdline_printf(cl, "failed to attached device %s\n",
                da.name);
    rte_devargs_reset(&da);
}

void
cmd_detach_parsed(void *parsed_result,
                   struct cmdline *cl,
                   __rte_unused void *data)
{
    struct cmd_detach_result *res = parsed_result;
    struct rte_devargs da;

    memset(&da, 0, sizeof(da));

    if (rte_devargs_parsef(&da, "%s", res->devargs)) {
        cmdline_printf(cl, "cannot parse devargs\n");
        return;
    }

    printf("detaching...\n");
    if (!rte_eal_hotplug_remove(rte_bus_name(da.bus), da.name))
        cmdline_printf(cl, "detached device %s\n",
            da.name);
    else
        cmdline_printf(cl, "failed to detach device %s\n",
            da.name);
    rte_devargs_reset(&da);
}