lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

mac80211: A-MPDU MLME use dynamic allocation

Browse Source 
This patch alters the A-MPDU MLME in sta_info to use dynamic allocation,
thus drastically improving memory usage - from a constant ~2 Kbyte in
the previous (static) allocation to a lower limit of ~200 Byte and an upper
limit of ~2 Kbyte.

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ron Rindjunsky
2008-03-26 20:36:03 +02:00
committed by John W. Linville
parent 6c507cd040
commit cee24a3e58
7 changed files with 151 additions and 100 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
net/mac80211/sta_info.h
View File

@@ -68,43 +68,37 @@ enum ieee80211_sta_info_flags {
/**
* struct tid_ampdu_tx - TID aggregation information (Tx).
*
* @state: TID's state in session state machine.
* @dialog_token: dialog token for aggregation session
* @ssn: Starting Sequence Number expected to be aggregated.
* @addba_resp_timer: timer for peer's response to addba request
* @addba_req_num: number of times addBA request has been sent.
* @ssn: Starting Sequence Number expected to be aggregated.
* @dialog_token: dialog token for aggregation session
*/
struct tid_ampdu_tx {
u8 state;
u8 dialog_token;
u16 ssn;
struct timer_list addba_resp_timer;
u8 addba_req_num;
u16 ssn;
u8 dialog_token;
};
/**
* struct tid_ampdu_rx - TID aggregation information (Rx).
*
* @state: TID's state in session state machine.
* @dialog_token: dialog token for aggregation session
* @ssn: Starting Sequence Number expected to be aggregated.
* @buf_size: buffer size for incoming A-MPDUs
* @timeout: reset timer value.
* @head_seq_num: head sequence number in reordering buffer.
* @stored_mpdu_num: number of MPDUs in reordering buffer
* @reorder_buf: buffer to reorder incoming aggregated MPDUs
* @session_timer: check if peer keeps Tx-ing on the TID (by timeout value)
* @ssn: Starting Sequence Number expected to be aggregated.
* @buf_size: buffer size for incoming A-MPDUs
* @timeout: reset timer value.
* @dialog_token: dialog token for aggregation session
*/
struct tid_ampdu_rx {
u8 state;
u8 dialog_token;
u16 ssn;
u16 buf_size;
u16 timeout;
u16 head_seq_num;
u16 stored_mpdu_num;
struct sk_buff **reorder_buf;
struct timer_list session_timer;
u16 ssn;
u16 buf_size;
u16 timeout;
u8 dialog_token;
};
/**
@@ -133,16 +127,24 @@ enum plink_state {
/**
* struct sta_ampdu_mlme - STA aggregation information.
*
* @tid_state_rx: TID's state in Rx session state machine.
* @tid_rx: aggregation info for Rx per TID
* @tid_tx: aggregation info for Tx per TID
* @ampdu_rx: for locking sections in aggregation Rx flow
* @tid_state_tx: TID's state in Tx session state machine.
* @tid_tx: aggregation info for Tx per TID
* @addba_req_num: number of times addBA request has been sent.
* @ampdu_tx: for locking sectionsi in aggregation Tx flow
* @dialog_token_allocator: dialog token enumerator for each new session;
*/
struct sta_ampdu_mlme {
struct tid_ampdu_rx tid_rx[STA_TID_NUM];
struct tid_ampdu_tx tid_tx[STA_TID_NUM];
/* rx */
u8 tid_state_rx[STA_TID_NUM];
struct tid_ampdu_rx *tid_rx[STA_TID_NUM];
spinlock_t ampdu_rx;
/* tx */
u8 tid_state_tx[STA_TID_NUM];
struct tid_ampdu_tx *tid_tx[STA_TID_NUM];
u8 addba_req_num[STA_TID_NUM];
spinlock_t ampdu_tx;
u8 dialog_token_allocator;
};