Count the number of FW TX blocks allocated per link. We add blocks to a
link counter when allocated for a TX descriptor. We remove blocks
according to counters in fw_status indicating the number of freed blocks
in FW. These counters are polled after each IRQ.
Signed-off-by: Arik Nemtsov <arik@xxxxxxxxxx>
---
drivers/net/wireless/wl12xx/main.c | 11 +++++++
drivers/net/wireless/wl12xx/ps.c | 2 -
drivers/net/wireless/wl12xx/tx.c | 53 ++++++++++++++++++---------------
drivers/net/wireless/wl12xx/wl12xx.h | 4 ++
4 files changed, 44 insertions(+), 26 deletions(-)
diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index d600cff..a83d26d 100644
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -549,6 +549,17 @@ static void wl1271_fw_status(struct wl1271 *wl,
if (total)
clear_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags);
+ if (wl->bss_type == BSS_TYPE_AP_BSS) {
+ for (i = 0; i < AP_MAX_LINKS; i++) {
+ u8 cnt = status->tx_lnk_free_blks[i] -
+ wl->links[i].prev_freed_blks;
+
+ wl->links[i].prev_freed_blks =
+ status->tx_lnk_free_blks[i];
+ wl->links[i].allocated_blks -= cnt;
+ }
+ }
+
/* update the host-chipset time offset */
getnstimeofday(&ts);
wl->time_offset = (timespec_to_ns(&ts) >> 10) -
diff --git a/drivers/net/wireless/wl12xx/ps.c b/drivers/net/wireless/wl12xx/ps.c
index 60a3738..92397ad 100644
--- a/drivers/net/wireless/wl12xx/ps.c
+++ b/drivers/net/wireless/wl12xx/ps.c
@@ -174,5 +174,3 @@ int wl1271_ps_set_mode(struct wl1271 *wl, enum wl1271_cmd_ps_mode mode,
return ret;
}
-
-
diff --git a/drivers/net/wireless/wl12xx/tx.c b/drivers/net/wireless/wl12xx/tx.c
index d43193e..128c274 100644
--- a/drivers/net/wireless/wl12xx/tx.c
+++ b/drivers/net/wireless/wl12xx/tx.c
@@ -108,7 +108,7 @@ u8 wl1271_tx_get_hlid(struct sk_buff *skb)
}
static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra,
- u32 buf_offset)
+ u32 buf_offset, u8 hlid)
{
struct wl1271_tx_hw_descr *desc;
u32 total_len = skb->len + sizeof(struct wl1271_tx_hw_descr) + extra;
@@ -137,6 +137,9 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra,
wl->tx_blocks_available -= total_blocks;
+ if (wl->bss_type == BSS_TYPE_AP_BSS)
+ wl->links[hlid].allocated_blks += total_blocks;
+
ret = 0;
wl1271_debug(DEBUG_TX,
@@ -150,7 +153,8 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra,
}
static void wl1271_tx_fill_hdr(struct wl1271 *wl, struct sk_buff *skb,
- u32 extra, struct ieee80211_tx_info *control)
+ u32 extra, struct ieee80211_tx_info *control,
+ u8 hlid)
{
struct timespec ts;
struct wl1271_tx_hw_descr *desc;
@@ -186,7 +190,7 @@ static void wl1271_tx_fill_hdr(struct wl1271 *wl, struct sk_buff *skb,
desc->tid = ac;
if (wl->bss_type != BSS_TYPE_AP_BSS) {
- desc->aid = TX_HW_DEFAULT_AID;
+ desc->aid = hlid;
/* if the packets are destined for AP (have a STA entry)
send them with AP rate policies, otherwise use default
@@ -196,25 +200,17 @@ static void wl1271_tx_fill_hdr(struct wl1271 *wl, struct sk_buff *skb,
else
rate_idx = ACX_TX_BASIC_RATE;
} else {
- if (control->control.sta) {
- struct wl1271_station *wl_sta;
-
- wl_sta = (struct wl1271_station *)
- control->control.sta->drv_priv;
- desc->hlid = wl_sta->hlid;
+ desc->hlid = hlid;
+ switch (hlid) {
+ case WL1271_AP_GLOBAL_HLID:
+ rate_idx = ACX_TX_AP_MODE_MGMT_RATE;
+ break;
+ case WL1271_AP_BROADCAST_HLID:
+ rate_idx = ACX_TX_AP_MODE_BCST_RATE;
+ break;
+ default:
rate_idx = ac;
- } else {
- struct ieee80211_hdr *hdr;
-
- hdr = (struct ieee80211_hdr *)
- (skb->data + sizeof(*desc));
- if (ieee80211_is_mgmt(hdr->frame_control)) {
- desc->hlid = WL1271_AP_GLOBAL_HLID;
- rate_idx = ACX_TX_AP_MODE_MGMT_RATE;
- } else {
- desc->hlid = WL1271_AP_BROADCAST_HLID;
- rate_idx = ACX_TX_AP_MODE_BCST_RATE;
- }
+ break;
}
}
@@ -245,6 +241,7 @@ static int wl1271_prepare_tx_frame(struct wl1271 *wl, struct sk_buff *skb,
u32 extra = 0;
int ret = 0;
u32 total_len;
+ u8 hlid;
if (!skb)
return -EINVAL;
@@ -271,14 +268,19 @@ static int wl1271_prepare_tx_frame(struct wl1271 *wl, struct sk_buff *skb,
}
}
- ret = wl1271_tx_allocate(wl, skb, extra, buf_offset);
+ if (wl->bss_type == BSS_TYPE_AP_BSS)
+ hlid = wl1271_tx_get_hlid(skb);
+ else
+ hlid = TX_HW_DEFAULT_AID;
+
+ ret = wl1271_tx_allocate(wl, skb, extra, buf_offset, hlid);
if (ret < 0)
return ret;
if (wl->bss_type == BSS_TYPE_AP_BSS)
wl1271_tx_ap_update_inconnection_sta(wl, skb);
- wl1271_tx_fill_hdr(wl, skb, extra, info);
+ wl1271_tx_fill_hdr(wl, skb, extra, info, hlid);
/*
* The length of each packet is stored in terms of words. Thus, we must
@@ -656,8 +658,11 @@ void wl1271_tx_reset(struct wl1271 *wl)
/* TX failure */
if (wl->bss_type == BSS_TYPE_AP_BSS) {
- for (i = 0; i < AP_MAX_LINKS; i++)
+ for (i = 0; i < AP_MAX_LINKS; i++) {
wl1271_tx_reset_link_queues(wl, i);
+ wl->links[i].allocated_blks = 0;
+ wl->links[i].prev_freed_blks = 0;
+ }
wl->last_tx_hlid = 0;
} else {
diff --git a/drivers/net/wireless/wl12xx/wl12xx.h b/drivers/net/wireless/wl12xx/wl12xx.h
index 0027e00..59d687b 100644
--- a/drivers/net/wireless/wl12xx/wl12xx.h
+++ b/drivers/net/wireless/wl12xx/wl12xx.h
@@ -271,6 +271,10 @@ struct wl1271_ap_key {
struct wl1271_link {
/* AP-mode - TX queue per AC in link */
struct sk_buff_head tx_queue[NUM_TX_QUEUES];
+
+ /* accounting for allocated / available TX blocks in FW */
+ u8 allocated_blks;
+ u8 prev_freed_blks;
};
struct wl1271 {
--
1.7.1
--
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