1.. SPDX-License-Identifier: GPL-2.0
2
3==========
4SMC Sysctl
5==========
6
7/proc/sys/net/smc/* Variables
8=============================
9
10autocorking_size - INTEGER
11	Setting SMC auto corking size:
12	SMC auto corking is like TCP auto corking from the application's
13	perspective of view. When applications do consecutive small
14	write()/sendmsg() system calls, we try to coalesce these small writes
15	as much as possible, to lower total amount of CDC and RDMA Write been
16	sent.
17	autocorking_size limits the maximum corked bytes that can be sent to
18	the under device in 1 single sending. If set to 0, the SMC auto corking
19	is disabled.
20	Applications can still use TCP_CORK for optimal behavior when they
21	know how/when to uncork their sockets.
22
23	Default: 64K
24
25smcr_buf_type - INTEGER
26        Controls which type of sndbufs and RMBs to use in later newly created
27        SMC-R link group. Only for SMC-R.
28
29        Default: 0 (physically contiguous sndbufs and RMBs)
30
31        Possible values:
32
33        - 0 - Use physically contiguous buffers
34        - 1 - Use virtually contiguous buffers
35        - 2 - Mixed use of the two types. Try physically contiguous buffers first.
36          If not available, use virtually contiguous buffers then.
37