| Message ID | 20240530232722.45255-1-technoboy85@gmail.com |
|---|---|
| Headers | show |
| Series | net: visibility of memory limits in netns | expand |
On Fri, May 31, 2024 at 1:27 AM <technoboy85@gmail.com> wrote: > > From: Matteo Croce <teknoraver@meta.com> > > The following sysctl are global and can't be read from a netns: > > net.core.rmem_default > net.core.rmem_max > net.core.wmem_default > net.core.wmem_max > > Make the following sysctl parameters available readonly from within a > network namespace, allowing a container to read them. > > Signed-off-by: Matteo Croce <teknoraver@meta.com> Reviewed-by: Eric Dumazet <edumazet@google.com>
On Fri, May 31, 2024 at 01:27:21AM GMT, technoboy85@gmail.com wrote: > From: Matteo Croce <teknoraver@meta.com> > > The following sysctl are global and can't be read from a netns: > > net.core.rmem_default > net.core.rmem_max > net.core.wmem_default > net.core.wmem_max > > Make the following sysctl parameters available readonly from within a > network namespace, allowing a container to read them. > > Signed-off-by: Matteo Croce <teknoraver@meta.com> Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev>
Hello: This series was applied to netdev/net-next.git (main) by Jakub Kicinski <kuba@kernel.org>: On Fri, 31 May 2024 01:27:20 +0200 you wrote: > From: Matteo Croce <teknoraver@meta.com> > > Some programs need to know the size of the network buffers to operate > correctly, export the following sysctls read-only in network namespaces: > > - net.core.rmem_default > - net.core.rmem_max > - net.core.wmem_default > - net.core.wmem_max > > [...] Here is the summary with links: - [net-next,v2,1/2] net: make net.core.{r,w}mem_{default,max} namespaced https://git.kernel.org/netdev/net-next/c/19249c0724f2 - [net-next,v2,2/2] selftests: net: tests net.core.{r,w}mem_{default,max} sysctls in a netns https://git.kernel.org/netdev/net-next/c/5b5233fb81bf You are awesome, thank you!
From: Matteo Croce <teknoraver@meta.com> Some programs need to know the size of the network buffers to operate correctly, export the following sysctls read-only in network namespaces: - net.core.rmem_default - net.core.rmem_max - net.core.wmem_default - net.core.wmem_max Matteo Croce (2): net: make net.core.{r,w}mem_{default,max} namespaced selftests: net: tests net.core.{r,w}mem_{default,max} sysctls in a netns changes from v1: - added SPDX header to test - rewrite test with more detailed error messages net/core/sysctl_net_core.c | 75 ++++++++++++--------- tools/testing/selftests/net/Makefile | 1 + tools/testing/selftests/net/netns-sysctl.sh | 40 +++++++++++ 3 files changed, 83 insertions(+), 33 deletions(-) create mode 100755 tools/testing/selftests/net/netns-sysctl.sh