diff options
| author | Nicolas Dichtel | 2020-05-13 15:58:43 +0200 |
|---|---|---|
| committer | David S. Miller | 2020-05-16 13:46:37 -0700 |
| commit | 9efd6a3cecdde984d67e63d17fe6af53c7c50968 (patch) | |
| tree | 929d4468b5d8211cf9263e3c82e20459e5d26958 /net/core | |
| parent | 74a1c059168ba1388aa475847c05a02f5f971a46 (diff) | |
netns: enable to inherit devconf from current netns
The goal is to be able to inherit the initial devconf parameters from the
current netns, ie the netns where this new netns has been created.
This is useful in a containers environment where /proc/sys is read only.
For example, if a pod is created with specifics devconf parameters and has
the capability to create netns, the user expects to get the same parameters
than his 'init_net', which is not the real init_net in this case.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/sysctl_net_core.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c index 0ddb13a6282b..b109cc8a6dd8 100644 --- a/net/core/sysctl_net_core.c +++ b/net/core/sysctl_net_core.c @@ -23,6 +23,7 @@ #include <net/pkt_sched.h> static int two __maybe_unused = 2; +static int three = 3; static int min_sndbuf = SOCK_MIN_SNDBUF; static int min_rcvbuf = SOCK_MIN_RCVBUF; static int max_skb_frags = MAX_SKB_FRAGS; @@ -39,6 +40,7 @@ EXPORT_SYMBOL(sysctl_fb_tunnels_only_for_init_net); * IPv6: reset all settings to default * 1 - Both inherit all current settings from init_net * 2 - Both reset all settings to default + * 3 - Both inherit all settings from current netns */ int sysctl_devconf_inherit_init_net __read_mostly; EXPORT_SYMBOL(sysctl_devconf_inherit_init_net); @@ -553,7 +555,7 @@ static struct ctl_table net_core_table[] = { .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = SYSCTL_ZERO, - .extra2 = &two, + .extra2 = &three, }, { .procname = "high_order_alloc_disable", |