From a1602d749097386ec9e8e411a16a9c37ff6cd5fc Mon Sep 17 00:00:00 2001 From: Gerd Bayer Date: Mon, 30 Oct 2023 18:03:43 +0100 Subject: [PATCH] net/smc: fix documentation of buffer sizes Since commit 833bac7ec392 ("net/smc: Fix setsockopt and sysctl to specify same buffer size again") the SMC protocol uses its own default values for the smc.rmem and smc.wmem sysctl variables which are no longer derived from the TCP IPv4 buffer sizes. Fixup the kernel documentation to reflect this change, too. Fixes: 833bac7ec392 ("net/smc: Fix setsockopt and sysctl to specify same buffer size again") Signed-off-by: Gerd Bayer Reviewed-by: Wenjia Zhang Reviewed-by: Dust Li Link: https://lore.kernel.org/r/20231030170343.748097-1-gbayer@linux.ibm.com Signed-off-by: Paolo Abeni --- Documentation/networking/smc-sysctl.rst | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/Documentation/networking/smc-sysctl.rst b/Documentation/networking/smc-sysctl.rst index 6d8acdbe9be1..769149d98773 100644 --- a/Documentation/networking/smc-sysctl.rst +++ b/Documentation/networking/smc-sysctl.rst @@ -44,18 +44,16 @@ smcr_testlink_time - INTEGER wmem - INTEGER Initial size of send buffer used by SMC sockets. - The default value inherits from net.ipv4.tcp_wmem[1]. The minimum value is 16KiB and there is no hard limit for max value, but only allowed 512KiB for SMC-R and 1MiB for SMC-D. - Default: 16K + Default: 64KiB rmem - INTEGER Initial size of receive buffer (RMB) used by SMC sockets. - The default value inherits from net.ipv4.tcp_rmem[1]. The minimum value is 16KiB and there is no hard limit for max value, but only allowed 512KiB for SMC-R and 1MiB for SMC-D. - Default: 128K + Default: 64KiB