[LEDE-DEV] [PATCH] kernel: try to remove TCP_RENO from the kernel.

[Baptiste Jonglez]

Hi,

On Sat, Aug 05, 2017 at 06:15:46PM -0700, Rosen Penev wrote:
> LEDE currently uses CUBIC and not RENO by default. In theory, this
> change should remove RENO from the kernel, but it doesn't. Might
> as well keep it like this in case something changes.

As far as I can tell, Reno is hard-wired in the kernel TCP implementation.
So, it's just not possible to disable support for it.  I doubt it would
significantly reduce the size of the kernel anyway.

Baptiste

> Signed-off by: Rosen Penev <rosenp at gmail.com>
> ---
>  target/linux/generic/config-3.18 | 2 +-
>  target/linux/generic/config-4.4  | 2 +-
>  target/linux/generic/config-4.9  | 2 +-
>  3 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/target/linux/generic/config-3.18 b/target/linux/generic/config-3.18
> index 1e3f0b5abe..de479a79a8 100644
> --- a/target/linux/generic/config-3.18
> +++ b/target/linux/generic/config-3.18
> @@ -867,7 +867,6 @@ CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
>  # CONFIG_DEFAULT_RENO is not set
>  CONFIG_DEFAULT_SECURITY=""
>  CONFIG_DEFAULT_SECURITY_DAC=y
> -CONFIG_DEFAULT_TCP_CONG="cubic"
>  CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
>  # CONFIG_DELL_SMO8800 is not set
>  # CONFIG_DEPRECATED_PARAM_STRUCT is not set
> @@ -3904,6 +3903,7 @@ CONFIG_TCP_CONG_CUBIC=y
>  # CONFIG_TCP_CONG_HYBLA is not set
>  # CONFIG_TCP_CONG_ILLINOIS is not set
>  # CONFIG_TCP_CONG_LP is not set
> +# CONFIG_TCP_RENO is not set
>  # CONFIG_TCP_CONG_SCALABLE is not set
>  # CONFIG_TCP_CONG_VEGAS is not set
>  # CONFIG_TCP_CONG_VENO is not set
> diff --git a/target/linux/generic/config-4.4 b/target/linux/generic/config-4.4
> index 1c0af9597f..1c13b89912 100644
> --- a/target/linux/generic/config-4.4
> +++ b/target/linux/generic/config-4.4
> @@ -911,7 +911,6 @@ CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
>  # CONFIG_DEFAULT_RENO is not set
>  CONFIG_DEFAULT_SECURITY=""
>  CONFIG_DEFAULT_SECURITY_DAC=y
> -CONFIG_DEFAULT_TCP_CONG="cubic"
>  CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
>  # CONFIG_DELL_RBTN is not set
>  # CONFIG_DELL_SMO8800 is not set
> @@ -4112,6 +4111,7 @@ CONFIG_TCP_CONG_CUBIC=y
>  # CONFIG_TCP_CONG_HYBLA is not set
>  # CONFIG_TCP_CONG_ILLINOIS is not set
>  # CONFIG_TCP_CONG_LP is not set
> +# CONFIG_TCP_RENO is not set
>  # CONFIG_TCP_CONG_SCALABLE is not set
>  # CONFIG_TCP_CONG_VEGAS is not set
>  # CONFIG_TCP_CONG_VENO is not set
> diff --git a/target/linux/generic/config-4.9 b/target/linux/generic/config-4.9
> index 24bbbc0587..06e2c4da4b 100644
> --- a/target/linux/generic/config-4.9
> +++ b/target/linux/generic/config-4.9
> @@ -1008,7 +1008,6 @@ CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
>  # CONFIG_DEFAULT_RENO is not set
>  CONFIG_DEFAULT_SECURITY=""
>  CONFIG_DEFAULT_SECURITY_DAC=y
> -CONFIG_DEFAULT_TCP_CONG="cubic"
>  CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
>  # CONFIG_DELL_RBTN is not set
>  # CONFIG_DELL_SMO8800 is not set
> @@ -4488,6 +4487,7 @@ CONFIG_TCP_CONG_CUBIC=y
>  # CONFIG_TCP_CONG_ILLINOIS is not set
>  # CONFIG_TCP_CONG_LP is not set
>  # CONFIG_TCP_CONG_NV is not set
> +# CONFIG_TCP_CONG_RENO is not set
>  # CONFIG_TCP_CONG_SCALABLE is not set
>  # CONFIG_TCP_CONG_VEGAS is not set
>  # CONFIG_TCP_CONG_VENO is not set
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