From: Stephen Hemminger <stephen@networkplumber•org>
To: kys@microsoft•com, haiyangz@microsoft•com, sthemmin@microsoft•com
Cc: devel@linuxdriverproject•org, netdev@vger•kernel.org
Subject: [PATCH net 3/3] hv_netvsc: Fix the default receive buffer size
Date: Thu, 7 Dec 2017 16:10:55 -0800 [thread overview]
Message-ID: <20171208001055.24670-4-sthemmin@microsoft.com> (raw)
In-Reply-To: <20171208001055.24670-1-sthemmin@microsoft.com>
From: Haiyang Zhang <haiyangz@microsoft•com>
The intended size is 16 MB, and the default slot size is 1728.
So, NETVSC_DEFAULT_RX should be 16*1024*1024 / 1728 = 9709.
Fixes: 5023a6db73196 ("netvsc: increase default receive buffer size")
Signed-off-by: Haiyang Zhang <haiyangz@microsoft•com>
Signed-off-by: Stephen Hemminger <sthemmin@microsoft•com>
---
drivers/net/hyperv/netvsc_drv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index dc70de674ca9..edfcde5d3621 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -50,7 +50,7 @@
#define NETVSC_MIN_TX_SECTIONS 10
#define NETVSC_DEFAULT_TX 192 /* ~1M */
#define NETVSC_MIN_RX_SECTIONS 10 /* ~64K */
-#define NETVSC_DEFAULT_RX 10485 /* Max ~16M */
+#define NETVSC_DEFAULT_RX 9709 /* ~16M */
#define LINKCHANGE_INT (2 * HZ)
#define VF_TAKEOVER_INT (HZ / 10)
--
2.11.0
next prev parent reply other threads:[~2017-12-08 0:10 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-08 0:10 [PATCH net 0/3] netvsc fix buffer size issues Stephen Hemminger
2017-12-08 0:10 ` [PATCH net 1/3] hv_netvsc: Correct the max receive buffer size Stephen Hemminger
2017-12-08 10:33 ` Dan Carpenter
2017-12-08 16:03 ` David Miller
2017-12-08 16:11 ` Haiyang Zhang
2017-12-08 0:10 ` [PATCH net 2/3] hv_netvsc: Limit the receive buffer size for legacy hosts Stephen Hemminger
2017-12-08 0:10 ` Stephen Hemminger [this message]
2017-12-08 10:44 ` [PATCH net 3/3] hv_netvsc: Fix the default receive buffer size Dan Carpenter
2017-12-08 16:18 ` Haiyang Zhang
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