| .. SPDX-License-Identifier: GPL-2.0 |
| |
| ========== |
| SMC Sysctl |
| ========== |
| |
| /proc/sys/net/smc/* Variables |
| ============================= |
| |
| autocorking_size - INTEGER |
| Setting SMC auto corking size: |
| SMC auto corking is like TCP auto corking from the application's |
| perspective of view. When applications do consecutive small |
| write()/sendmsg() system calls, we try to coalesce these small writes |
| as much as possible, to lower total amount of CDC and RDMA Write been |
| sent. |
| autocorking_size limits the maximum corked bytes that can be sent to |
| the under device in 1 single sending. If set to 0, the SMC auto corking |
| is disabled. |
| Applications can still use TCP_CORK for optimal behavior when they |
| 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. |
