nexmon – Rev 1

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#include <errno.h>

#include <netlink/genl/genl.h>
#include <netlink/genl/family.h>
#include <netlink/genl/ctrl.h>
#include <netlink/msg.h>
#include <netlink/attr.h>

#include "nl80211.h"
#include "iw.h"

static int iw_cqm_rssi(struct nl80211_state *state, struct nl_cb *cb,
                       struct nl_msg *msg, int argc, char **argv,
                       enum id_input id)
{
        struct nl_msg *cqm = NULL;
        int thold = 0;
        int hyst = 0;
        int ret = -ENOSPC;

        /* get the required args */
        if (argc < 1 || argc > 2)
                return 1;

        if (strcmp(argv[0], "off")) {
                thold = atoi(argv[0]);

                if (thold == 0)
                        return -EINVAL;

                if (argc == 2)
                        hyst = atoi(argv[1]);
        }

        /* connection quality monitor attributes */
        cqm = nlmsg_alloc();

        NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, thold);
        NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hyst);

        nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
        ret = 0;

 nla_put_failure:
        nlmsg_free(cqm);
        return ret;
}

TOPLEVEL(cqm, "",
         0, 0, CIB_NETDEV, NULL,
         "Configure the WLAN connection quality monitor.\n");

COMMAND(cqm, rssi, "<threshold|off> [<hysteresis>]",
        NL80211_CMD_SET_CQM, 0, CIB_NETDEV, iw_cqm_rssi,
        "Set connection quality monitor RSSI threshold.\n");