diff options
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/file.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/file.h b/drivers/net/wireless/intel/iwlwifi/fw/file.h index 329b00e90fa4..1bdcab9b9275 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/file.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/file.h @@ -972,4 +972,19 @@ struct iwl_fw_cmd_version { u8 notif_ver; } __packed; +static inline size_t _iwl_tlv_array_len(const struct iwl_ucode_tlv *tlv, + size_t fixed_size, size_t var_size) +{ + size_t var_len = le32_to_cpu(tlv->length) - fixed_size; + + if (WARN_ON(var_len % var_size)) + return 0; + + return var_len / var_size; +} + +#define iwl_tlv_array_len(_tlv_ptr, _struct_ptr, _memb) \ + _iwl_tlv_array_len((_tlv_ptr), sizeof(*(_struct_ptr)), \ + sizeof(_struct_ptr->_memb[0])) + #endif /* __iwl_fw_file_h__ */ |