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ieee802154: correct ieee802154_is_valid_psdu_len

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This patch corrects the ieee802154_is_valid_psdu_len function that this
function also checks on reserved values 6-8 for validation the psdu
length.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring 2015-02-11 14:39:15 +01:00 committed by Marcel Holtmann
parent f9d1ce8f81
commit 306f7aa180
1 changed files with 10 additions and 2 deletions
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12
include/linux/ieee802154.h
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@ -28,7 +28,8 @@
#include <asm/byteorder.h>
#define IEEE802154_MTU 127
#define IEEE802154_MIN_PSDU_LEN 5
#define IEEE802154_ACK_PSDU_LEN 5
#define IEEE802154_MIN_PSDU_LEN 9
#define IEEE802154_PAN_ID_BROADCAST 0xffff
#define IEEE802154_ADDR_SHORT_BROADCAST 0xffff
@ -204,11 +205,18 @@ enum {
/**
* ieee802154_is_valid_psdu_len - check if psdu len is valid
* available lengths:
* 0-4 Reserved
* 5 MPDU (Acknowledgment)
* 6-8 Reserved
* 9-127 MPDU
*
* @len: psdu len with (MHR + payload + MFR)
*/
static inline bool ieee802154_is_valid_psdu_len(const u8 len)
{
return (len >= IEEE802154_MIN_PSDU_LEN && len <= IEEE802154_MTU);
return (len == IEEE802154_ACK_PSDU_LEN ||
(len >= IEEE802154_MIN_PSDU_LEN && len <= IEEE802154_MTU));
}
/**