From: Tristan Lelong <tlelong@xxxxxxxxxxxxxxxxxx>
This patch make the TX window size configurable using the kernel configuration interface.
The default value used is the previous value: 4
Signed-off-by: Tristan Lelong <tristan@xxxxxxxxxx>
---
drivers/bluetooth/Kconfig | 7 +++++++
drivers/bluetooth/hci_bcsp.c | 5 +----
2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig
index 364f080..9f634cb 100644
--- a/drivers/bluetooth/Kconfig
+++ b/drivers/bluetooth/Kconfig
@@ -59,6 +59,13 @@ config BT_HCIUART_BCSP
Say Y here to compile support for HCI BCSP protocol.
+config BT_HCIUART_BCSP_WINSIZE
+ int "BCSP reliable packet TX window size"
+ default 4
+ depends on BT_HCIUART_BCSP
+ help
+ Defines the number of packets that can be sent before receiving a ACK.
+
config BT_HCIUART_ATH3K
bool "Atheros AR300x serial support"
depends on BT_HCIUART
diff --git a/drivers/bluetooth/hci_bcsp.c b/drivers/bluetooth/hci_bcsp.c
index 142b42b..bb18f2a 100644
--- a/drivers/bluetooth/hci_bcsp.c
+++ b/drivers/bluetooth/hci_bcsp.c
@@ -59,9 +59,6 @@ static u8 conf_rsp_pkt[4] = { 0xde, 0xad, 0xd0, 0xd0 };
static u8 sync_pkt[4] = { 0xda, 0xdc, 0xed, 0xed };
static u8 sync_rsp_pkt[4] = { 0xac, 0xaf, 0xef, 0xee };
-
-#define BCSP_TXWINSIZE 4
-
#define BCSP_PKT_LEN(data) ((data[1] >> 4) + (data[2]))
#define BCSP_LE_PKT_LEN 0x04
@@ -331,7 +328,7 @@ static struct sk_buff *bcsp_dequeue(struct hci_uart *hu)
spin_lock_irqsave_nested(&bcsp->unack.lock, flags, SINGLE_DEPTH_NESTING);
- if (bcsp->unack.qlen < BCSP_TXWINSIZE) {
+ if (bcsp->unack.qlen < CONFIG_BT_HCIUART_BCSP_WINSIZE) {
skb = skb_dequeue(&bcsp->rel);
if (skb != NULL) {
struct sk_buff *nskb = bcsp_prepare_pkt(bcsp, skb->data, skb->len,
--
2.1.1
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