26fdb67e8b
Technically we don't have to keep extending the sample, but it feels useful to run these tools locally to confirm everything is working. Signed-off-by: Stanislav Fomichev <sdf@google.com> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Link: https://lore.kernel.org/r/20230727163001.3952878-5-sdf@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
111 lines
2.4 KiB
C
111 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include <ynl.h>
|
|
|
|
#include <net/if.h>
|
|
|
|
#include "netdev-user.h"
|
|
|
|
/* netdev genetlink family code sample
|
|
* This sample shows off basics of the netdev family but also notification
|
|
* handling, hence the somewhat odd UI. We subscribe to notifications first
|
|
* then wait for ifc selection, so the socket may already accumulate
|
|
* notifications as we wait. This allows us to test that YNL can handle
|
|
* requests and notifications getting interleaved.
|
|
*/
|
|
|
|
static void netdev_print_device(struct netdev_dev_get_rsp *d, unsigned int op)
|
|
{
|
|
char ifname[IF_NAMESIZE];
|
|
const char *name;
|
|
|
|
if (!d->_present.ifindex)
|
|
return;
|
|
|
|
name = if_indextoname(d->ifindex, ifname);
|
|
if (name)
|
|
printf("%8s", name);
|
|
printf("[%d]\t", d->ifindex);
|
|
|
|
if (!d->_present.xdp_features)
|
|
return;
|
|
|
|
printf("%llx:", d->xdp_features);
|
|
for (int i = 0; d->xdp_features > 1U << i; i++) {
|
|
if (d->xdp_features & (1U << i))
|
|
printf(" %s", netdev_xdp_act_str(1 << i));
|
|
}
|
|
|
|
printf(" xdp-zc-max-segs=%u", d->xdp_zc_max_segs);
|
|
|
|
name = netdev_op_str(op);
|
|
if (name)
|
|
printf(" (ntf: %s)", name);
|
|
printf("\n");
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
struct netdev_dev_get_list *devs;
|
|
struct ynl_ntf_base_type *ntf;
|
|
struct ynl_error yerr;
|
|
struct ynl_sock *ys;
|
|
int ifindex = 0;
|
|
|
|
if (argc > 1)
|
|
ifindex = strtol(argv[1], NULL, 0);
|
|
|
|
ys = ynl_sock_create(&ynl_netdev_family, &yerr);
|
|
if (!ys) {
|
|
fprintf(stderr, "YNL: %s\n", yerr.msg);
|
|
return 1;
|
|
}
|
|
|
|
if (ynl_subscribe(ys, "mgmt"))
|
|
goto err_close;
|
|
|
|
printf("Select ifc ($ifindex; or 0 = dump; or -2 ntf check): ");
|
|
scanf("%d", &ifindex);
|
|
|
|
if (ifindex > 0) {
|
|
struct netdev_dev_get_req *req;
|
|
struct netdev_dev_get_rsp *d;
|
|
|
|
req = netdev_dev_get_req_alloc();
|
|
netdev_dev_get_req_set_ifindex(req, ifindex);
|
|
|
|
d = netdev_dev_get(ys, req);
|
|
netdev_dev_get_req_free(req);
|
|
if (!d)
|
|
goto err_close;
|
|
|
|
netdev_print_device(d, 0);
|
|
netdev_dev_get_rsp_free(d);
|
|
} else if (!ifindex) {
|
|
devs = netdev_dev_get_dump(ys);
|
|
if (!devs)
|
|
goto err_close;
|
|
|
|
ynl_dump_foreach(devs, d)
|
|
netdev_print_device(d, 0);
|
|
netdev_dev_get_list_free(devs);
|
|
} else if (ifindex == -2) {
|
|
ynl_ntf_check(ys);
|
|
}
|
|
while ((ntf = ynl_ntf_dequeue(ys))) {
|
|
netdev_print_device((struct netdev_dev_get_rsp *)&ntf->data,
|
|
ntf->cmd);
|
|
ynl_ntf_free(ntf);
|
|
}
|
|
|
|
ynl_sock_destroy(ys);
|
|
return 0;
|
|
|
|
err_close:
|
|
fprintf(stderr, "YNL: %s\n", ys->err.msg);
|
|
ynl_sock_destroy(ys);
|
|
return 2;
|
|
}
|