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| author | David L Stevens <david.stevens@oracle.com> | 2014-09-29 19:48:11 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-09-30 17:10:39 -0400 |
| commit | 8e845f4cbbd2ef81846c2ab5dca46d88fb2717ee (patch) | |
| tree | 59f30a451145d5e95bf308c4b06cacb61a996417 /drivers/dma/dmaengine.h | |
| parent | e4defc775424a3501caf98d266a8d7616fa53819 (diff) | |
sunvnet: make transmit path zero-copy in the kernel
This patch removes pre-allocated transmit buffers and instead directly maps
pending packets on demand. This saves O(n^2) maximum-sized transmit buffers,
for n hosts on a vswitch, as well as a copy to those buffers.
Single-stream TCP throughput linux-solaris dropped ~5% for 1500-byte MTU,
but linux-linux at 1500-bytes increased ~20%.
Signed-off-by: David L Stevens <david.stevens@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/dma/dmaengine.h')
0 files changed, 0 insertions, 0 deletions