From 7bb5d6ce9e6ebb3bb71915cb0224523d3c284b4f Mon Sep 17 00:00:00 2001 From: Arik Nemtsov Date: Sun, 14 Aug 2011 13:17:00 +0300 Subject: [PATCH] wl12xx: Revert "wl12xx: schedule TX packets according to FW occupancy" This does not make sense in fw >= 6/7.3.0.0.75 (wl127x/wl128x) - we don't use Tx blocks to measure FW occupancy anymore. This reverts commit 9e374a37b6fa2310b71d3c5657cd0c1e693120c6. Signed-off-by: Arik Nemtsov Signed-off-by: Eliad Peller Signed-off-by: Luciano Coelho --- drivers/net/wireless/wl12xx/debugfs.c | 5 +- drivers/net/wireless/wl12xx/main.c | 30 ++++-------- drivers/net/wireless/wl12xx/tx.c | 68 +++++++++------------------ drivers/net/wireless/wl12xx/wl12xx.h | 2 +- 4 files changed, 33 insertions(+), 72 deletions(-) diff --git a/drivers/net/wireless/wl12xx/debugfs.c b/drivers/net/wireless/wl12xx/debugfs.c index 37934b5601cd..3b5f240d7031 100644 --- a/drivers/net/wireless/wl12xx/debugfs.c +++ b/drivers/net/wireless/wl12xx/debugfs.c @@ -339,10 +339,7 @@ static ssize_t driver_state_read(struct file *file, char __user *user_buf, #define DRIVER_STATE_PRINT_HEX(x) DRIVER_STATE_PRINT(x, "0x%x") DRIVER_STATE_PRINT_INT(tx_blocks_available); - DRIVER_STATE_PRINT_INT(tx_allocated_blocks[0]); - DRIVER_STATE_PRINT_INT(tx_allocated_blocks[1]); - DRIVER_STATE_PRINT_INT(tx_allocated_blocks[2]); - DRIVER_STATE_PRINT_INT(tx_allocated_blocks[3]); + DRIVER_STATE_PRINT_INT(tx_allocated_blocks); DRIVER_STATE_PRINT_INT(tx_frames_cnt); DRIVER_STATE_PRINT_LHEX(tx_frames_map[0]); DRIVER_STATE_PRINT_INT(tx_queue_count[0]); diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c index 98258fe0e29d..f91875e379a2 100644 --- a/drivers/net/wireless/wl12xx/main.c +++ b/drivers/net/wireless/wl12xx/main.c @@ -824,24 +824,13 @@ static void wl1271_irq_update_links_status(struct wl1271 *wl, } } -static u32 wl1271_tx_allocated_blocks(struct wl1271 *wl) -{ - int i; - u32 total_alloc_blocks = 0; - - for (i = 0; i < NUM_TX_QUEUES; i++) - total_alloc_blocks += wl->tx_allocated_blocks[i]; - - return total_alloc_blocks; -} - static void wl1271_fw_status(struct wl1271 *wl, struct wl1271_fw_full_status *full_status) { struct wl1271_fw_common_status *status = &full_status->common; struct timespec ts; u32 old_tx_blk_count = wl->tx_blocks_available; - u32 freed_blocks = 0, ac_freed_blocks; + u32 freed_blocks = 0; int i; if (wl->bss_type == BSS_TYPE_AP_BSS) { @@ -861,23 +850,21 @@ static void wl1271_fw_status(struct wl1271 *wl, /* update number of available TX blocks */ for (i = 0; i < NUM_TX_QUEUES; i++) { - ac_freed_blocks = le32_to_cpu(status->tx_released_blks[i]) - - wl->tx_blocks_freed[i]; - freed_blocks += ac_freed_blocks; - - wl->tx_allocated_blocks[i] -= ac_freed_blocks; + freed_blocks += le32_to_cpu(status->tx_released_blks[i]) - + wl->tx_blocks_freed[i]; wl->tx_blocks_freed[i] = le32_to_cpu(status->tx_released_blks[i]); } + wl->tx_allocated_blocks -= freed_blocks; + if (wl->bss_type == BSS_TYPE_AP_BSS) { /* Update num of allocated TX blocks per link and ps status */ wl1271_irq_update_links_status(wl, &full_status->ap); wl->tx_blocks_available += freed_blocks; } else { - int avail = full_status->sta.tx_total - - wl1271_tx_allocated_blocks(wl); + int avail = full_status->sta.tx_total - wl->tx_allocated_blocks; /* * The FW might change the total number of TX memblocks before @@ -2013,6 +2000,7 @@ static void __wl1271_op_remove_interface(struct wl1271 *wl, wl->psm_entry_retry = 0; wl->power_level = WL1271_DEFAULT_POWER_LEVEL; wl->tx_blocks_available = 0; + wl->tx_allocated_blocks = 0; wl->tx_results_count = 0; wl->tx_packets_count = 0; wl->time_offset = 0; @@ -2033,10 +2021,8 @@ static void __wl1271_op_remove_interface(struct wl1271 *wl, */ wl->flags = 0; - for (i = 0; i < NUM_TX_QUEUES; i++) { + for (i = 0; i < NUM_TX_QUEUES; i++) wl->tx_blocks_freed[i] = 0; - wl->tx_allocated_blocks[i] = 0; - } wl1271_debugfs_reset(wl); diff --git a/drivers/net/wireless/wl12xx/tx.c b/drivers/net/wireless/wl12xx/tx.c index 48fde96ce0d4..0696aedaf806 100644 --- a/drivers/net/wireless/wl12xx/tx.c +++ b/drivers/net/wireless/wl12xx/tx.c @@ -168,7 +168,7 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra, u32 total_len = skb->len + sizeof(struct wl1271_tx_hw_descr) + extra; u32 len; u32 total_blocks; - int id, ret = -EBUSY, ac; + int id, ret = -EBUSY; u32 spare_blocks; if (unlikely(wl->quirks & WL12XX_QUIRK_USE_2_SPARE_BLOCKS)) @@ -206,9 +206,7 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra, desc->id = id; wl->tx_blocks_available -= total_blocks; - - ac = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); - wl->tx_allocated_blocks[ac] += total_blocks; + wl->tx_allocated_blocks += total_blocks; if (wl->bss_type == BSS_TYPE_AP_BSS) wl->links[hlid].allocated_blks += total_blocks; @@ -459,41 +457,21 @@ void wl1271_handle_tx_low_watermark(struct wl1271 *wl) } } -static struct sk_buff_head *wl1271_select_queue(struct wl1271 *wl, - struct sk_buff_head *queues) -{ - int i, q = -1; - u32 min_blks = 0xffffffff; - - /* - * Find a non-empty ac where: - * 1. There are packets to transmit - * 2. The FW has the least allocated blocks - */ - for (i = 0; i < NUM_TX_QUEUES; i++) - if (!skb_queue_empty(&queues[i]) && - (wl->tx_allocated_blocks[i] < min_blks)) { - q = i; - min_blks = wl->tx_allocated_blocks[q]; - } - - if (q == -1) - return NULL; - - return &queues[q]; -} - static struct sk_buff *wl1271_sta_skb_dequeue(struct wl1271 *wl) { struct sk_buff *skb = NULL; unsigned long flags; - struct sk_buff_head *queue; - queue = wl1271_select_queue(wl, wl->tx_queue); - if (!queue) + skb = skb_dequeue(&wl->tx_queue[CONF_TX_AC_VO]); + if (skb) goto out; - - skb = skb_dequeue(queue); + skb = skb_dequeue(&wl->tx_queue[CONF_TX_AC_VI]); + if (skb) + goto out; + skb = skb_dequeue(&wl->tx_queue[CONF_TX_AC_BE]); + if (skb) + goto out; + skb = skb_dequeue(&wl->tx_queue[CONF_TX_AC_BK]); out: if (skb) { @@ -511,7 +489,6 @@ static struct sk_buff *wl1271_ap_skb_dequeue(struct wl1271 *wl) struct sk_buff *skb = NULL; unsigned long flags; int i, h, start_hlid; - struct sk_buff_head *queue; /* start from the link after the last one */ start_hlid = (wl->last_tx_hlid + 1) % AP_MAX_LINKS; @@ -520,20 +497,21 @@ static struct sk_buff *wl1271_ap_skb_dequeue(struct wl1271 *wl) for (i = 0; i < AP_MAX_LINKS; i++) { h = (start_hlid + i) % AP_MAX_LINKS; - /* only consider connected stations */ - if (h >= WL1271_AP_STA_HLID_START && - !test_bit(h - WL1271_AP_STA_HLID_START, wl->ap_hlid_map)) - continue; - - queue = wl1271_select_queue(wl, wl->links[h].tx_queue); - if (!queue) - continue; - - skb = skb_dequeue(queue); + skb = skb_dequeue(&wl->links[h].tx_queue[CONF_TX_AC_VO]); if (skb) - break; + goto out; + skb = skb_dequeue(&wl->links[h].tx_queue[CONF_TX_AC_VI]); + if (skb) + goto out; + skb = skb_dequeue(&wl->links[h].tx_queue[CONF_TX_AC_BE]); + if (skb) + goto out; + skb = skb_dequeue(&wl->links[h].tx_queue[CONF_TX_AC_BK]); + if (skb) + goto out; } +out: if (skb) { int q = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); wl->last_tx_hlid = h; diff --git a/drivers/net/wireless/wl12xx/wl12xx.h b/drivers/net/wireless/wl12xx/wl12xx.h index 0bc29356ebe4..5b00a84acab2 100644 --- a/drivers/net/wireless/wl12xx/wl12xx.h +++ b/drivers/net/wireless/wl12xx/wl12xx.h @@ -424,7 +424,7 @@ struct wl1271 { /* Accounting for allocated / available TX blocks on HW */ u32 tx_blocks_freed[NUM_TX_QUEUES]; u32 tx_blocks_available; - u32 tx_allocated_blocks[NUM_TX_QUEUES]; + u32 tx_allocated_blocks; u32 tx_results_count; /* Transmitted TX packets counter for chipset interface */ -- 2.20.1