+/* We allow allocation of more than 1 page buffers to support large packets.
+ * It is suboptimal behavior performance wise in case MTU above page size.
+ */
+unsigned int mtu_max = TXRX_BUF_LEN_DEFAULT - ETH_HLEN;
+static int mtu_max_set(const char *val, const struct kernel_param *kp)
+{
+ int ret;
+
+ /* sets mtu_max directly. no need to restore it in case of
+ * illegal value since we assume this will fail insmod
+ */
+ ret = param_set_uint(val, kp);
+ if (ret)
+ return ret;
+
+ if (mtu_max < 68 || mtu_max > IEEE80211_MAX_DATA_LEN_DMG)
+ ret = -EINVAL;
+
+ return ret;
+}
+
+static struct kernel_param_ops mtu_max_ops = {
+ .set = mtu_max_set,
+ .get = param_get_uint,
+};
+
+module_param_cb(mtu_max, &mtu_max_ops, &mtu_max, S_IRUGO);
+MODULE_PARM_DESC(mtu_max, " Max MTU value.");
+