From: Arik Nemtsov <arik@xxxxxxxxxx>
Track the number of freed packets in each AC when receiving an interrupt
from the FW. This paves the way for tracking allocated packets per AC.
Signed-off-by: Arik Nemtsov <arik@xxxxxxxxxx>
Signed-off-by: Eliad Peller <eliad@xxxxxxxxxx>
---
v2: use bitwise-and instead of modulus
drivers/net/wireless/wl12xx/main.c | 16 +++++++++++++++-
drivers/net/wireless/wl12xx/tx.c | 2 ++
drivers/net/wireless/wl12xx/wl12xx.h | 8 ++++++--
3 files changed, 23 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index 0ef63b5..479977d 100644
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -811,22 +811,32 @@ static void wl1271_irq_update_links_status(struct wl1271 *wl,
static void wl12xx_fw_status(struct wl1271 *wl,
struct wl12xx_fw_status *status)
{
struct timespec ts;
u32 old_tx_blk_count = wl->tx_blocks_available;
int avail, freed_blocks;
+ int i;
wl1271_raw_read(wl, FW_STATUS_ADDR, status, sizeof(*status), false);
wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
"drv_rx_counter = %d, tx_results_counter = %d)",
status->intr,
status->fw_rx_counter,
status->drv_rx_counter,
status->tx_results_counter);
+ for (i = 0; i < NUM_TX_QUEUES; i++) {
+ /* prevent wrap-around in freed-packets counter */
+ wl->tx_allocated_pkts -=
+ (status->tx_released_pkts[i] -
+ wl->tx_pkts_freed[i]) & 0xff;
+
+ wl->tx_pkts_freed[i] = status->tx_released_pkts[i];
+ }
+
freed_blocks = le32_to_cpu(status->total_released_blks) -
wl->tx_blocks_freed;
wl->tx_blocks_freed = le32_to_cpu(status->total_released_blks);
wl->tx_allocated_blocks -= freed_blocks;
@@ -1931,13 +1941,13 @@ out:
return ret;
}
static void __wl1271_op_remove_interface(struct wl1271 *wl,
bool reset_tx_queues)
{
- int ret;
+ int ret, i;
wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
/* because of hardware recovery, we may get here twice */
if (wl->state != WL1271_STATE_ON)
return;
@@ -2047,12 +2057,16 @@ deinit:
* get executed before all these vars have been reset.
*/
wl->flags = 0;
wl->tx_blocks_freed = 0;
+ wl->tx_allocated_pkts = 0;
+ for (i = 0; i < NUM_TX_QUEUES; i++)
+ wl->tx_pkts_freed[i] = 0;
+
wl1271_debugfs_reset(wl);
kfree(wl->fw_status);
wl->fw_status = NULL;
kfree(wl->tx_res_if);
wl->tx_res_if = NULL;
diff --git a/drivers/net/wireless/wl12xx/tx.c b/drivers/net/wireless/wl12xx/tx.c
index 8fdffd0..7dd6d8b 100644
--- a/drivers/net/wireless/wl12xx/tx.c
+++ b/drivers/net/wireless/wl12xx/tx.c
@@ -239,12 +239,14 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra,
desc->id = id;
wl->tx_blocks_available -= total_blocks;
wl->tx_allocated_blocks += total_blocks;
+ wl->tx_allocated_pkts++;
+
if (wl->bss_type == BSS_TYPE_AP_BSS)
wl->links[hlid].allocated_blks += total_blocks;
ret = 0;
wl1271_debug(DEBUG_TX,
diff --git a/drivers/net/wireless/wl12xx/wl12xx.h b/drivers/net/wireless/wl12xx/wl12xx.h
index 416d68e..24b4025 100644
--- a/drivers/net/wireless/wl12xx/wl12xx.h
+++ b/drivers/net/wireless/wl12xx/wl12xx.h
@@ -265,14 +265,14 @@ struct wl12xx_fw_status {
/* Cumulative counter of total released mem blocks since FW-reset */
__le32 total_released_blks;
/* Size (in Memory Blocks) of TX pool */
__le32 tx_total;
- /* Cumulative counter of released mem-blocks per AC */
- u8 tx_released_blks[NUM_TX_QUEUES];
+ /* Cumulative counter of released packets per AC */
+ u8 tx_released_pkts[NUM_TX_QUEUES];
/* Cumulative counter of freed MBs per HLID */
u8 tx_lnk_free_blks[WL12XX_MAX_LINKS];
/* Cumulative counter of released Voice memory blocks */
u8 tx_voice_released_blks;
@@ -419,12 +419,16 @@ struct wl1271 {
/* Accounting for allocated / available TX blocks on HW */
u32 tx_blocks_freed;
u32 tx_blocks_available;
u32 tx_allocated_blocks;
u32 tx_results_count;
+ /* Accounting for allocated / available Tx packets in HW */
+ u32 tx_pkts_freed[NUM_TX_QUEUES];
+ u32 tx_allocated_pkts;
+
/* Transmitted TX packets counter for chipset interface */
u32 tx_packets_count;
/* Time-offset between host and chipset clocks */
s64 time_offset;
--
1.7.6.401.g6a319
--
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