diff options
| author | Nicolas Dichtel <nicolas.dichtel@6wind.com> | 2025-02-28 11:20:57 +0100 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-03-04 12:44:48 +0100 |
| commit | 4754affe0b57e55fbd17c0986c89b548d093d5c4 (patch) | |
| tree | 213e781f4ffa04354667510415e88b0a486613fc | |
| parent | 0c493da86374dffff7505e67289ad75b21f5b301 (diff) | |
net: advertise netns_immutable property via netlink
Since commit 05c1280a2bcf ("netdev_features: convert NETIF_F_NETNS_LOCAL to
dev->netns_local"), there is no way to see if the netns_immutable property
s set on a device. Let's add a netlink attribute to advertise it.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
| -rw-r--r-- | Documentation/netlink/specs/rt_link.yaml | 3 | ||||
| -rw-r--r-- | include/uapi/linux/if_link.h | 1 | ||||
| -rw-r--r-- | net/core/rtnetlink.c | 3 |
3 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/netlink/specs/rt_link.yaml b/Documentation/netlink/specs/rt_link.yaml index 8b5c0f067328..31238455f8e9 100644 --- a/Documentation/netlink/specs/rt_link.yaml +++ b/Documentation/netlink/specs/rt_link.yaml @@ -1160,6 +1160,9 @@ attribute-sets: name: max-pacing-offload-horizon type: uint doc: EDT offload horizon supported by the device (in nsec). + - + name: netns-immutable + type: u8 - name: af-spec-attrs attributes: diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h index 3b586fb0bc4c..318386cc5b0d 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -378,6 +378,7 @@ enum { IFLA_GRO_IPV4_MAX_SIZE, IFLA_DPLL_PIN, IFLA_MAX_PACING_OFFLOAD_HORIZON, + IFLA_NETNS_IMMUTABLE, __IFLA_MAX }; diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index b52e610e157e..8b6bf5e9bb34 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -1292,6 +1292,7 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev, + nla_total_size(4) /* IFLA_TSO_MAX_SEGS */ + nla_total_size(1) /* IFLA_OPERSTATE */ + nla_total_size(1) /* IFLA_LINKMODE */ + + nla_total_size(1) /* IFLA_NETNS_IMMUTABLE */ + nla_total_size(4) /* IFLA_CARRIER_CHANGES */ + nla_total_size(4) /* IFLA_LINK_NETNSID */ + nla_total_size(4) /* IFLA_GROUP */ @@ -2046,6 +2047,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, netif_running(dev) ? READ_ONCE(dev->operstate) : IF_OPER_DOWN) || nla_put_u8(skb, IFLA_LINKMODE, READ_ONCE(dev->link_mode)) || + nla_put_u8(skb, IFLA_NETNS_IMMUTABLE, dev->netns_immutable) || nla_put_u32(skb, IFLA_MTU, READ_ONCE(dev->mtu)) || nla_put_u32(skb, IFLA_MIN_MTU, READ_ONCE(dev->min_mtu)) || nla_put_u32(skb, IFLA_MAX_MTU, READ_ONCE(dev->max_mtu)) || @@ -2234,6 +2236,7 @@ static const struct nla_policy ifla_policy[IFLA_MAX+1] = { [IFLA_ALLMULTI] = { .type = NLA_REJECT }, [IFLA_GSO_IPV4_MAX_SIZE] = NLA_POLICY_MIN(NLA_U32, MAX_TCP_HEADER + 1), [IFLA_GRO_IPV4_MAX_SIZE] = { .type = NLA_U32 }, + [IFLA_NETNS_IMMUTABLE] = { .type = NLA_REJECT }, }; static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { |