This is a note to let you know that I've just added the patch titled
dp83640: increase receive time stamp buffer size
to the 3.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
dp83640-increase-receive-time-stamp-buffer-size.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 8028837d71ba9904b17281b40f94b93e947fbe38 Mon Sep 17 00:00:00 2001
From: Richard Cochran <[email protected]>
Date: Sat, 6 Aug 2011 21:03:04 +0000
Subject: dp83640: increase receive time stamp buffer size
From: Richard Cochran <[email protected]>
commit 8028837d71ba9904b17281b40f94b93e947fbe38 upstream.
The dp83640 buffers receive time stamps from special PHY status frames,
matching them to received PTP packets in a work queue. Because the timeout
for orphaned time stamps is so long and the buffer is so small, the driver
can drop time stamps under moderate PTP traffic.
This commit fixes the issue by decreasing the timeout to (at least) one
timer tick and increasing the buffer size.
Signed-off-by: Richard Cochran <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/net/phy/dp83640.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
--- a/drivers/net/phy/dp83640.c
+++ b/drivers/net/phy/dp83640.c
@@ -34,8 +34,7 @@
#define PAGESEL 0x13
#define LAYER4 0x02
#define LAYER2 0x01
-#define MAX_RXTS 4
-#define MAX_TXTS 4
+#define MAX_RXTS 64
#define N_EXT_TS 1
#define PSF_PTPVER 2
#define PSF_EVNT 0x4000
@@ -218,7 +217,7 @@ static void phy2rxts(struct phy_rxts *p,
rxts->seqid = p->seqid;
rxts->msgtype = (p->msgtype >> 12) & 0xf;
rxts->hash = p->msgtype & 0x0fff;
- rxts->tmo = jiffies + HZ;
+ rxts->tmo = jiffies + 2;
}
static u64 phy2txts(struct phy_txts *p)
Patches currently in stable-queue which might be from [email protected]
are
queue-3.0/dp83640-increase-receive-time-stamp-buffer-size.patch
queue-3.0/gianfar-fix-fiper-alignment-after-resetting-the-time.patch
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