diff options
| author | Wen Gu <guwen@linux.alibaba.com> | 2022-07-14 17:44:02 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-07-18 11:19:17 +0100 |
| commit | 4bc5008e4387106215b50ae1a4ac2467455725ca (patch) | |
| tree | a4cae8948e6682f0f02f167f7b7d17799f84c025 /Documentation | |
| parent | 0ef69e788411cba2af017db731a9fc62d255e9ac (diff) | |
net/smc: Introduce a sysctl for setting SMC-R buffer type
This patch introduces the sysctl smcr_buf_type for setting
the type of SMC-R sndbufs and RMBs.
Valid values includes:
- SMCR_PHYS_CONT_BUFS, which means use physically contiguous
buffers for better performance and is the default value.
- SMCR_VIRT_CONT_BUFS, which means use virtually contiguous
buffers in case of physically contiguous memory is scarce.
- SMCR_MIXED_BUFS, which means first try to use physically
contiguous buffers. If not available, then use virtually
contiguous buffers.
Signed-off-by: Wen Gu <guwen@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/networking/smc-sysctl.rst | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/networking/smc-sysctl.rst b/Documentation/networking/smc-sysctl.rst index 0987fd1bc220..742e90e6d822 100644 --- a/Documentation/networking/smc-sysctl.rst +++ b/Documentation/networking/smc-sysctl.rst @@ -21,3 +21,16 @@ autocorking_size - INTEGER know how/when to uncork their sockets. Default: 64K + +smcr_buf_type - INTEGER + Controls which type of sndbufs and RMBs to use in later newly created + SMC-R link group. Only for SMC-R. + + Default: 0 (physically contiguous sndbufs and RMBs) + + Possible values: + + - 0 - Use physically contiguous buffers + - 1 - Use virtually contiguous buffers + - 2 - Mixed use of the two types. Try physically contiguous buffers first. + If not available, use virtually contiguous buffers then. |