linux/tools/net/ynl/samples/devlink.c
Jakub Kicinski fff8660b54 tools: ynl: add sample for devlink
Add a sample to show off how to issue basic devlink requests.
For added testing issue get requests while walking a dump.

$ ./devlink
netdevsim/netdevsim1:
    driver: netdevsim
    running fw:
        fw.mgmt: 10.20.30
    ...
netdevsim/netdevsim2:
    driver: netdevsim
    running fw:
        fw.mgmt: 10.20.30
    ...

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-08 14:01:10 -07:00

61 lines
1.4 KiB
C

// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <string.h>
#include <ynl.h>
#include "devlink-user.h"
int main(int argc, char **argv)
{
struct devlink_get_list *devs;
struct ynl_sock *ys;
ys = ynl_sock_create(&ynl_devlink_family, NULL);
if (!ys)
return 1;
devs = devlink_get_dump(ys);
if (!devs)
goto err_close;
ynl_dump_foreach(devs, d) {
struct devlink_info_get_req *info_req;
struct devlink_info_get_rsp *info_rsp;
printf("%s/%s:\n", d->bus_name, d->dev_name);
info_req = devlink_info_get_req_alloc();
devlink_info_get_req_set_bus_name(info_req, d->bus_name);
devlink_info_get_req_set_dev_name(info_req, d->dev_name);
info_rsp = devlink_info_get(ys, info_req);
devlink_info_get_req_free(info_req);
if (!info_rsp)
goto err_free_devs;
if (info_rsp->_present.info_driver_name_len)
printf(" driver: %s\n", info_rsp->info_driver_name);
if (info_rsp->n_info_version_running)
printf(" running fw:\n");
for (unsigned i = 0; i < info_rsp->n_info_version_running; i++)
printf(" %s: %s\n",
info_rsp->info_version_running[i].info_version_name,
info_rsp->info_version_running[i].info_version_value);
printf(" ...\n");
devlink_info_get_rsp_free(info_rsp);
}
devlink_get_list_free(devs);
ynl_sock_destroy(ys);
return 0;
err_free_devs:
devlink_get_list_free(devs);
err_close:
fprintf(stderr, "YNL: %s\n", ys->err.msg);
ynl_sock_destroy(ys);
return 2;
}