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Date: Sat, 21 Apr 2012 17:11:17 +0200
From: Karsten Keil <isdn@...ux-pingi.de>
To: David Miller <davem@...emloft.net>
Cc: netdev@...r.kernel.org, isdn4linux@...tserv.isdn4linux.de
Subject: [PATCH 19/28] mISDN: Early confirm for transparent data
It is better to send a confirm early, less TX underuns will
happen.
Signed-off-by: Karsten Keil <kkeil@...ux-pingi.de>
---
drivers/isdn/hardware/mISDN/avmfritz.c | 7 ++-----
drivers/isdn/hardware/mISDN/hfcmulti.c | 9 ++-------
drivers/isdn/hardware/mISDN/hfcpci.c | 7 ++-----
drivers/isdn/hardware/mISDN/hfcsusb.c | 6 ------
drivers/isdn/hardware/mISDN/mISDNipac.c | 7 ++-----
drivers/isdn/hardware/mISDN/mISDNisar.c | 7 ++-----
drivers/isdn/hardware/mISDN/netjet.c | 7 ++-----
drivers/isdn/hardware/mISDN/w6692.c | 7 ++-----
drivers/isdn/mISDN/hwchannel.c | 5 +++--
9 files changed, 17 insertions(+), 45 deletions(-)
diff --git a/drivers/isdn/hardware/mISDN/avmfritz.c b/drivers/isdn/hardware/mISDN/avmfritz.c
index e76e1ba..c773a7f 100644
--- a/drivers/isdn/hardware/mISDN/avmfritz.c
+++ b/drivers/isdn/hardware/mISDN/avmfritz.c
@@ -670,11 +670,8 @@ avm_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
id = hh->id; /* skb can be freed */
hdlc_fill_fifo(bch);
ret = 0;
- spin_unlock_irqrestore(&fc->lock, flags);
- if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
- queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
- } else
- spin_unlock_irqrestore(&fc->lock, flags);
+ }
+ spin_unlock_irqrestore(&fc->lock, flags);
return ret;
case PH_ACTIVATE_REQ:
spin_lock_irqsave(&fc->lock, flags);
diff --git a/drivers/isdn/hardware/mISDN/hfcmulti.c b/drivers/isdn/hardware/mISDN/hfcmulti.c
index e91f82a..d826586 100644
--- a/drivers/isdn/hardware/mISDN/hfcmulti.c
+++ b/drivers/isdn/hardware/mISDN/hfcmulti.c
@@ -3586,13 +3586,8 @@ handle_bmsg(struct mISDNchannel *ch, struct sk_buff *skb)
/* start fifo */
HFC_outb_nodebug(hc, R_FIFO, 0);
HFC_wait_nodebug(hc);
- if (!test_bit(FLG_TRANSPARENT, &bch->Flags)) {
- spin_unlock_irqrestore(&hc->lock, flags);
- queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
- } else
- spin_unlock_irqrestore(&hc->lock, flags);
- } else
- spin_unlock_irqrestore(&hc->lock, flags);
+ }
+ spin_unlock_irqrestore(&hc->lock, flags);
return ret;
case PH_ACTIVATE_REQ:
if (debug & DEBUG_HFCMULTI_MSG)
diff --git a/drivers/isdn/hardware/mISDN/hfcpci.c b/drivers/isdn/hardware/mISDN/hfcpci.c
index 9262136..6a0d964 100644
--- a/drivers/isdn/hardware/mISDN/hfcpci.c
+++ b/drivers/isdn/hardware/mISDN/hfcpci.c
@@ -1702,11 +1702,8 @@ hfcpci_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
id = hh->id; /* skb can be freed */
hfcpci_fill_fifo(bch);
ret = 0;
- spin_unlock_irqrestore(&hc->lock, flags);
- if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
- queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
- } else
- spin_unlock_irqrestore(&hc->lock, flags);
+ }
+ spin_unlock_irqrestore(&hc->lock, flags);
return ret;
case PH_ACTIVATE_REQ:
spin_lock_irqsave(&hc->lock, flags);
diff --git a/drivers/isdn/hardware/mISDN/hfcsusb.c b/drivers/isdn/hardware/mISDN/hfcsusb.c
index add28ac..404184a 100644
--- a/drivers/isdn/hardware/mISDN/hfcsusb.c
+++ b/drivers/isdn/hardware/mISDN/hfcsusb.c
@@ -227,12 +227,6 @@ hfcusb_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
printk(KERN_DEBUG "%s: %s PH_DATA_REQ ret(%i)\n",
hw->name, __func__, ret);
if (ret > 0) {
- /*
- * other l1 drivers don't send early confirms on
- * transp data, but hfcsusb does because tx_next
- * skb is needed in tx_iso_complete()
- */
- queue_ch_frame(ch, PH_DATA_CNF, hh->id, NULL);
ret = 0;
}
return ret;
diff --git a/drivers/isdn/hardware/mISDN/mISDNipac.c b/drivers/isdn/hardware/mISDN/mISDNipac.c
index 4c1937b..d301d8c 100644
--- a/drivers/isdn/hardware/mISDN/mISDNipac.c
+++ b/drivers/isdn/hardware/mISDN/mISDNipac.c
@@ -1349,11 +1349,8 @@ hscx_l2l1(struct mISDNchannel *ch, struct sk_buff *skb)
id = hh->id; /* skb can be freed */
ret = 0;
hscx_fill_fifo(hx);
- spin_unlock_irqrestore(hx->ip->hwlock, flags);
- if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
- queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
- } else
- spin_unlock_irqrestore(hx->ip->hwlock, flags);
+ }
+ spin_unlock_irqrestore(hx->ip->hwlock, flags);
return ret;
case PH_ACTIVATE_REQ:
spin_lock_irqsave(hx->ip->hwlock, flags);
diff --git a/drivers/isdn/hardware/mISDN/mISDNisar.c b/drivers/isdn/hardware/mISDN/mISDNisar.c
index af9a966..8db914a 100644
--- a/drivers/isdn/hardware/mISDN/mISDNisar.c
+++ b/drivers/isdn/hardware/mISDN/mISDNisar.c
@@ -1490,11 +1490,8 @@ isar_l2l1(struct mISDNchannel *ch, struct sk_buff *skb)
id = hh->id; /* skb can be freed */
ret = 0;
isar_fill_fifo(ich);
- spin_unlock_irqrestore(ich->is->hwlock, flags);
- if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
- queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
- } else
- spin_unlock_irqrestore(ich->is->hwlock, flags);
+ }
+ spin_unlock_irqrestore(ich->is->hwlock, flags);
return ret;
case PH_ACTIVATE_REQ:
spin_lock_irqsave(ich->is->hwlock, flags);
diff --git a/drivers/isdn/hardware/mISDN/netjet.c b/drivers/isdn/hardware/mISDN/netjet.c
index 0dccda8..fd421e7 100644
--- a/drivers/isdn/hardware/mISDN/netjet.c
+++ b/drivers/isdn/hardware/mISDN/netjet.c
@@ -743,11 +743,8 @@ nj_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
id = hh->id; /* skb can be freed */
fill_dma(bc);
ret = 0;
- spin_unlock_irqrestore(&card->lock, flags);
- if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
- queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
- } else
- spin_unlock_irqrestore(&card->lock, flags);
+ }
+ spin_unlock_irqrestore(&card->lock, flags);
return ret;
case PH_ACTIVATE_REQ:
spin_lock_irqsave(&card->lock, flags);
diff --git a/drivers/isdn/hardware/mISDN/w6692.c b/drivers/isdn/hardware/mISDN/w6692.c
index dec013e1..0424652 100644
--- a/drivers/isdn/hardware/mISDN/w6692.c
+++ b/drivers/isdn/hardware/mISDN/w6692.c
@@ -955,11 +955,8 @@ w6692_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
id = hh->id; /* skb can be freed */
ret = 0;
W6692_fill_Bfifo(bc);
- spin_unlock_irqrestore(&card->lock, flags);
- if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
- queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
- } else
- spin_unlock_irqrestore(&card->lock, flags);
+ }
+ spin_unlock_irqrestore(&card->lock, flags);
return ret;
case PH_ACTIVATE_REQ:
spin_lock_irqsave(&card->lock, flags);
diff --git a/drivers/isdn/mISDN/hwchannel.c b/drivers/isdn/mISDN/hwchannel.c
index c74c363..a250244 100644
--- a/drivers/isdn/mISDN/hwchannel.c
+++ b/drivers/isdn/mISDN/hwchannel.c
@@ -305,8 +305,8 @@ get_next_bframe(struct bchannel *bch)
if (bch->tx_skb) {
bch->next_skb = NULL;
test_and_clear_bit(FLG_TX_NEXT, &bch->Flags);
- if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
- confirm_Bsend(bch); /* not for transparent */
+ /* confirm imediately to allow next data */
+ confirm_Bsend(bch);
return 1;
} else {
test_and_clear_bit(FLG_TX_NEXT, &bch->Flags);
@@ -395,6 +395,7 @@ bchannel_senddata(struct bchannel *ch, struct sk_buff *skb)
/* write to fifo */
ch->tx_skb = skb;
ch->tx_idx = 0;
+ confirm_Bsend(ch);
return 1;
}
}
--
1.7.3.4
--
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