ieee80211: Add IEEE80211_MAX_FRAME_LEN to linux/ieee80211.h
This patch adds IEEE80211_MAX_FRAME_LEN which is useful for drivers trying to determine how much to allocate for their RX buffers. It also updates the comment on IEEE80211_MAX_DATA_LEN based on revisions in 802.11e. IEEE80211_MAX_FRAG_THRESHOLD and IEEE80211_MAX_RTS_THRESHOLD are also revised due to the new maximum frame size. Signed-off-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
6a4329554c
commit
c237899d1f
|
@ -81,18 +81,18 @@
|
|||
|
||||
|
||||
/* miscellaneous IEEE 802.11 constants */
|
||||
#define IEEE80211_MAX_FRAG_THRESHOLD 2346
|
||||
#define IEEE80211_MAX_RTS_THRESHOLD 2347
|
||||
#define IEEE80211_MAX_FRAG_THRESHOLD 2352
|
||||
#define IEEE80211_MAX_RTS_THRESHOLD 2353
|
||||
#define IEEE80211_MAX_AID 2007
|
||||
#define IEEE80211_MAX_TIM_LEN 251
|
||||
#define IEEE80211_MAX_DATA_LEN 2304
|
||||
/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
|
||||
6.2.1.1.2.
|
||||
|
||||
The figure in section 7.1.2 suggests a body size of up to 2312
|
||||
bytes is allowed, which is a bit confusing, I suspect this
|
||||
represents the 2304 bytes of real data, plus a possible 8 bytes of
|
||||
WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
|
||||
802.11e clarifies the figure in section 7.1.2. The frame body is
|
||||
up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
|
||||
#define IEEE80211_MAX_DATA_LEN 2304
|
||||
/* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
|
||||
#define IEEE80211_MAX_FRAME_LEN 2352
|
||||
|
||||
#define IEEE80211_MAX_SSID_LEN 32
|
||||
|
||||
|
|
Loading…
Reference in a new issue