lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

IB/mthca: Optimize large messages on Sinai HCAs

Browse Source 
Sinai (one-port PCI Express) HCAs get improved throughput for messages
bigger than 80 KB in DDR mode if memory keys are formatted in a
specific way.  The enhancement only works if the memory key table is
smaller than 2^24 entries.  For larger tables, the enhancement is off
and a warning is printed (to avoid silent performance loss).

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Michael Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Eli Cohen
2006-03-02 12:40:46 -08:00
committed by Roland Dreier
parent 27d5630064
commit 651eaac928
5 changed files with 51 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/infiniband/hw/mthca/mthca_dev.h
View File

@@ -64,7 +64,8 @@ enum {
MTHCA_FLAG_NO_LAM = 1 << 5,
MTHCA_FLAG_FMR = 1 << 6,
MTHCA_FLAG_MEMFREE = 1 << 7,
MTHCA_FLAG_PCIE = 1 << 8
MTHCA_FLAG_PCIE = 1 << 8,
MTHCA_FLAG_SINAI_OPT = 1 << 9
};
enum {