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wlcore/wl12xx: change GEM Tx-spare blocks per-vif

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The number of spare Tx blocks must be changed when the GEM cipher is
engaged. Track set_key() operations to see if this is the case and
change the Tx HW spare block count accordingly. Set the number of spare
blocks for each operating mode from the low level driver.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
This commit is contained in:
Arik Nemtsov 2011-12-07 23:38:47 +02:00 committed by Luciano Coelho
parent 72b0624fa5
commit 3edab305df
7 changed files with 29 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/wireless/ti/wl12xx/main.c
View File

@ -34,6 +34,10 @@
#include "reg.h"
#define WL12XX_TX_HW_BLOCK_SPARE_DEFAULT 1
#define WL12XX_TX_HW_BLOCK_GEM_SPARE 2
static struct wlcore_partition_set wl12xx_ptable[PART_TABLE_LEN] = {
[PART_DOWN] = {
.mem = {
@ -675,6 +679,8 @@ static int __devinit wl12xx_probe(struct platform_device *pdev)
wl->ptable = wl12xx_ptable;
wl->rtable = wl12xx_rtable;
wl->num_tx_desc = 16;
wl->normal_tx_spare = WL12XX_TX_HW_BLOCK_SPARE_DEFAULT;
wl->gem_tx_spare = WL12XX_TX_HW_BLOCK_GEM_SPARE;
return wlcore_probe(wl, pdev);
}

1
drivers/net/wireless/ti/wlcore/debugfs.c
View File

@ -653,6 +653,7 @@ static ssize_t vifs_state_read(struct file *file, char __user *user_buf,
VIF_STATE_PRINT_INT(last_rssi_event);
VIF_STATE_PRINT_INT(ba_support);
VIF_STATE_PRINT_INT(ba_allowed);
VIF_STATE_PRINT_INT(is_gem);
VIF_STATE_PRINT_LLHEX(tx_security_seq);
VIF_STATE_PRINT_INT(tx_security_last_seq_lsb);
}

24
drivers/net/wireless/ti/wlcore/main.c
View File

@ -1858,7 +1858,6 @@ static void wl1271_op_stop(struct ieee80211_hw *hw)
wl->tx_results_count = 0;
wl->tx_packets_count = 0;
wl->time_offset = 0;
wl->tx_spare_blocks = TX_HW_BLOCK_SPARE_DEFAULT;
wl->ap_fw_ps_map = 0;
wl->ap_ps_map = 0;
wl->sched_scanning = false;
@ -2912,6 +2911,17 @@ static int wl1271_set_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
int ret;
bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
/*
* A role set to GEM cipher requires different Tx settings (namely
* spare blocks). Note when we are in this mode so the HW can adjust.
*/
if (key_type == KEY_GEM) {
if (action == KEY_ADD_OR_REPLACE)
wlvif->is_gem = true;
else if (action == KEY_REMOVE)
wlvif->is_gem = false;
}
if (is_ap) {
struct wl1271_station *wl_sta;
u8 hlid;
@ -2950,17 +2960,6 @@ static int wl1271_set_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
/*
* A STA set to GEM cipher requires 2 tx spare blocks.
* Return to default value when GEM cipher key is removed
*/
if (key_type == KEY_GEM) {
if (action == KEY_ADD_OR_REPLACE)
wl->tx_spare_blocks = 2;
else if (action == KEY_REMOVE)
wl->tx_spare_blocks = TX_HW_BLOCK_SPARE_DEFAULT;
}
addr = sta ? sta->addr : bcast_addr;
if (is_zero_ether_addr(addr)) {
@ -5259,7 +5258,6 @@ struct ieee80211_hw *wlcore_alloc_hw(size_t priv_size)
wl->quirks = 0;
wl->platform_quirks = 0;
wl->sched_scanning = false;
wl->tx_spare_blocks = TX_HW_BLOCK_SPARE_DEFAULT;
wl->system_hlid = WL12XX_SYSTEM_HLID;
wl->active_sta_count = 0;
wl->fwlog_size = 0;

9
drivers/net/wireless/ti/wlcore/tx.c
View File

@ -190,7 +190,7 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct wl12xx_vif *wlvif,
u32 len;
u32 total_blocks;
int id, ret = -EBUSY, ac;
u32 spare_blocks = wl->tx_spare_blocks;
u32 spare_blocks = wl->normal_tx_spare;
bool is_dummy = false;
if (buf_offset + total_len > WL1271_AGGR_BUFFER_SIZE)
@ -205,11 +205,10 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct wl12xx_vif *wlvif,
in the firmware */
len = wl12xx_calc_packet_alignment(wl, total_len);
/* in case of a dummy packet, use default amount of spare mem blocks */
if (unlikely(wl12xx_is_dummy_packet(wl, skb))) {
if (unlikely(wl12xx_is_dummy_packet(wl, skb)))
is_dummy = true;
spare_blocks = TX_HW_BLOCK_SPARE_DEFAULT;
}
else if (wlvif->is_gem)
spare_blocks = wl->gem_tx_spare;
total_blocks = (len + TX_HW_BLOCK_SIZE - 1) / TX_HW_BLOCK_SIZE +
spare_blocks;

1
drivers/net/wireless/ti/wlcore/tx.h
View File

@ -25,7 +25,6 @@
#ifndef __TX_H__
#define __TX_H__
#define TX_HW_BLOCK_SPARE_DEFAULT 1
#define TX_HW_BLOCK_SIZE 252
#define TX_HW_MGMT_PKT_LIFETIME_TU 2000

3
drivers/net/wireless/ti/wlcore/wl12xx.h
View File

@ -375,6 +375,9 @@ struct wl12xx_vif {
struct work_struct rx_streaming_disable_work;
struct timer_list rx_streaming_timer;
/* does the current role use GEM for encryption (AP or STA) */
bool is_gem;
/*
* This struct must be last!
* data that has to be saved acrossed reconfigs (e.g. recovery)

7
drivers/net/wireless/ti/wlcore/wlcore.h
View File

@ -150,9 +150,6 @@ struct wl1271 {
u32 tx_allocated_blocks;
u32 tx_results_count;
/* amount of spare TX blocks to use */
u32 tx_spare_blocks;
/* Accounting for allocated / available Tx packets in HW */
u32 tx_pkts_freed[NUM_TX_QUEUES];
u32 tx_allocated_pkts[NUM_TX_QUEUES];
@ -309,6 +306,10 @@ struct wl1271 {
/* number of TX descriptors the HW supports. */
u32 num_tx_desc;
/* spare Tx blocks for normal/GEM operating modes */
u32 normal_tx_spare;
u32 gem_tx_spare;
};
int __devinit wlcore_probe(struct wl1271 *wl, struct platform_device *pdev);