Looking at all this wid_list stuff again, > + wid_list[wid_cnt].id = WID_SUCCESS_FRAME_COUNT; > + wid_list[wid_cnt].type = WID_INT; > + wid_list[wid_cnt].size = sizeof(u32); > + wid_list[wid_cnt].val = (s8 *)(&(dummyval)); > + wid_cnt++; Doesn't that have endian issues? > + wid_list[wid_cnt].id = WID_RECEIVED_FRAGMENT_COUNT; > + wid_list[wid_cnt].type = WID_INT; > + wid_list[wid_cnt].size = sizeof(u32); > + wid_list[wid_cnt].val = (s8 *)(&(dummyval)); > + wid_cnt++; But I'm not really sure what the pointer does, tbh. > + wid_list[wid_cnt].id = WID_JOIN_REQ_EXTENDED; > + wid_list[wid_cnt].type = WID_STR; > + wid_list[wid_cnt].size = 112; > + wid_list[wid_cnt].val = kmalloc(wid_list[wid_cnt].size, GFP_KERNEL); I think you should declare a structure for these 112 bytes, clearly it's something like > + if (conn_attr->ssid) { > + memcpy(cur_byte, conn_attr->ssid, conn_attr->ssid_len); > + cur_byte[conn_attr->ssid_len] = '\0'; > + } > + cur_byte += MAX_SSID_LEN; u8 ssid[32]; > + *(cur_byte++) = INFRASTRUCTURE; u8 type; > + > + if (conn_attr->ch >= 1 && conn_attr->ch <= 14) { > + *(cur_byte++) = conn_attr->ch; > + } else { > + netdev_err(vif->ndev, "Channel out of range\n"); > + *(cur_byte++) = 0xFF; > + } u8 channel; > + *(cur_byte++) = (bss_param->cap_info) & 0xFF; > + *(cur_byte++) = ((bss_param->cap_info) >> 8) & 0xFF; __le16 cap_info; > + if (conn_attr->bssid) > + memcpy(cur_byte, conn_attr->bssid, 6); > + cur_byte += 6; u8 bssid[ETH_ALEN]; > + if (conn_attr->bssid) > + memcpy(cur_byte, conn_attr->bssid, 6); > + cur_byte += 6; again? > + *(cur_byte++) = (bss_param->beacon_period) & 0xFF; > + *(cur_byte++) = ((bss_param->beacon_period) >> 8) & 0xFF; __le16 beacon_period; > + *(cur_byte++) = bss_param->dtim_period; u8 dtim_period; etc. Declaring it as a struct also means you don't have to do all the put_le16_unaligned() or whatever, but can just fill the struct properly. johannes