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authorRichard Cochran <richardcochran@gmail.com>2011-08-06 21:03:04 +0000
committerGreg Kroah-Hartman <gregkh@suse.de>2011-08-15 18:31:42 -0700
commitfa54ab17fd26a469755f36f81fd4dad9e33f4f66 (patch)
tree40b61d8e3bc300d7048fb5669ed8c733042faf48
parent716fa319182000c26521cb2bd4ea034256230f5d (diff)
downloadlinux-linaro-fa54ab17fd26a469755f36f81fd4dad9e33f4f66.tar.gz
dp83640: increase receive time stamp buffer size
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 <richard.cochran@omicron.at> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/net/phy/dp83640.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/net/phy/dp83640.c b/drivers/net/phy/dp83640.c
index 2cd8dc5847b..cb6e0b486b1 100644
--- 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, struct rxts *rxts)
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)