nexmon – Rev 1

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#include "../src/utils.h"
#include <signal.h>

static int quit = 0;

static void change_cb(struct nl_cache *cache, struct nl_object *obj,
                      int action)
{
        struct nl_dump_params dp = {
                .dp_type = NL_DUMP_LINE,
                .dp_fd = stdout,
        };

        if (action == NL_ACT_NEW)
                printf("NEW ");
        else if (action == NL_ACT_DEL)
                printf("DEL ");
        else if (action == NL_ACT_CHANGE)
                printf("CHANGE ");

        nl_object_dump(obj, &dp);
}

static void sigint(int arg)
{
        quit = 1;
}

int main(int argc, char *argv[])
{
        struct nl_cache_mngr *mngr;
        struct nl_cache *lc, *nc, *ac, *rc;
        struct nl_sock *sock;
        int err;

        signal(SIGINT, sigint);

        sock = nlt_alloc_socket();
        err = nl_cache_mngr_alloc(sock, NETLINK_ROUTE, NL_AUTO_PROVIDE, &mngr);
        if (err < 0)
                fatal(err, "Unable to allocate cache manager: %s",
                      nl_geterror(err));

        if ((err = nl_cache_mngr_add(mngr, "route/link", &change_cb, &lc)) < 0)
                fatal(err, "Unable to add cache route/link: %s",
                      nl_geterror(err));

        if ((err = nl_cache_mngr_add(mngr, "route/neigh", &change_cb, &nc)) < 0)
                fatal(err, "Unable to add cache route/neigh: %s",
                      nl_geterror(err));

        if ((err = nl_cache_mngr_add(mngr, "route/addr", &change_cb, &ac)) < 0)
                fatal(err, "Unable to add cache route/addr: %s",
                      nl_geterror(err));

        if ((err = nl_cache_mngr_add(mngr, "route/route", &change_cb, &rc)) < 0)
                fatal(err, "Unable to add cache route/route: %s",
                      nl_geterror(err));

        while (!quit) {
                int err = nl_cache_mngr_poll(mngr, 5000);
                if (err < 0 && err != -NLE_INTR)
                        fatal(err, "Polling failed: %s", nl_geterror(err));

        }

        nl_cache_mngr_free(mngr);
        nl_socket_free(sock);

        return 0;
}