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authorRichard Cochran <richardcochran@gmail.com>2011-08-06 17:03:04 -0400
committerDavid S. Miller <davem@davemloft.net>2011-08-08 01:53:22 -0400
commit8028837d71ba9904b17281b40f94b93e947fbe38 (patch)
tree9113cff86a93b3bd227e147768c7a54a0588121c /drivers/net/phy
parentcbc056602c7c63620c86904c431ff6b61e029dcc (diff)
dp83640: increase receive time stamp buffer size
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> Cc: <stable@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy')
-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 2cd8dc5847b4..cb6e0b486b1e 100644
--- a/drivers/net/phy/dp83640.c
+++ b/drivers/net/phy/dp83640.c
@@ -34,8 +34,7 @@
34#define PAGESEL 0x13 34#define PAGESEL 0x13
35#define LAYER4 0x02 35#define LAYER4 0x02
36#define LAYER2 0x01 36#define LAYER2 0x01
37#define MAX_RXTS 4 37#define MAX_RXTS 64
38#define MAX_TXTS 4
39#define N_EXT_TS 1 38#define N_EXT_TS 1
40#define PSF_PTPVER 2 39#define PSF_PTPVER 2
41#define PSF_EVNT 0x4000 40#define PSF_EVNT 0x4000
@@ -218,7 +217,7 @@ static void phy2rxts(struct phy_rxts *p, struct rxts *rxts)
218 rxts->seqid = p->seqid; 217 rxts->seqid = p->seqid;
219 rxts->msgtype = (p->msgtype >> 12) & 0xf; 218 rxts->msgtype = (p->msgtype >> 12) & 0xf;
220 rxts->hash = p->msgtype & 0x0fff; 219 rxts->hash = p->msgtype & 0x0fff;
221 rxts->tmo = jiffies + HZ; 220 rxts->tmo = jiffies + 2;
222} 221}
223 222
224static u64 phy2txts(struct phy_txts *p) 223static u64 phy2txts(struct phy_txts *p)