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[v4,19/19] NTB: Increase transport MTU to 64k from 16k

Message ID b1facc7cc0e9f2a2a3e2c33ca694b75a5343c798.1433925092.git.Allen.Hubbe@emc.com (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show

Commit Message

Allen Hubbe June 10, 2015, 9:08 a.m. UTC 
From: Dave Jiang <dave.jiang@intel.com>

Benchmarking showed a significant performance increase with the MTU size
to 64k instead of 16k.  Change the driver default to 64k.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
---
 drivers/ntb/ntb_transport.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c
index e07b056af3be..1551493197b4 100644
--- a/drivers/ntb/ntb_transport.c
+++ b/drivers/ntb/ntb_transport.c
@@ -76,7 +76,7 @@  static unsigned long max_mw_size;
 module_param(max_mw_size, ulong, 0644);
 MODULE_PARM_DESC(max_mw_size, "Limit size of large memory windows");
 
-static unsigned int transport_mtu = 0x401E;
+static unsigned int transport_mtu = 0x10000;
 module_param(transport_mtu, uint, 0644);
 MODULE_PARM_DESC(transport_mtu, "Maximum size of NTB transport packets");