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| author |   Xin Long <lucien.xin@gmail.com> | 2020-10-29 15:05:01 +0800 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2020-10-30 15:24:06 -0700 |
| commit | e8a3001c2120c760017da81a307308572a3cdbbc (patch) | |
| tree | a6770ee9418f7523fb534ced95ed9204ed1c2880 /Documentation/networking | |
| parent | sctp: add encap_err_lookup for udp encap socks (diff) | |
| download | linux-dev-e8a3001c2120c760017da81a307308572a3cdbbc.tar.xz linux-dev-e8a3001c2120c760017da81a307308572a3cdbbc.zip | |
sctp: add encap_port for netns sock asoc and transport
encap_port is added as per netns/sock/assoc/transport, and the
latter one's encap_port inherits the former one's by default.
The transport's encap_port value would mostly decide if one
packet should go out with udp encapsulated or not.
This patch also allows users to set netns' encap_port by sysctl.
v1->v2:
- Change to define encap_port as __be16 for sctp_sock, asoc and
transport.
v2->v3:
- No change.
v3->v4:
- Add 'encap_port' entry in ip-sysctl.rst.
v4->v5:
- Improve the description of encap_port in ip-sysctl.rst.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'Documentation/networking')
| -rw-r--r-- | Documentation/networking/ip-sysctl.rst | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Documentation/networking/ip-sysctl.rst b/Documentation/networking/ip-sysctl.rst index 25e6673a085a..dad3ba952989 100644 --- a/Documentation/networking/ip-sysctl.rst +++ b/Documentation/networking/ip-sysctl.rst @@ -2642,6 +2642,22 @@ addr_scope_policy - INTEGER Default: 1 +encap_port - INTEGER + The default remote UDP encapsulation port. + + This value is used to set the dest port of the UDP header for the + outgoing UDP-encapsulated SCTP packets by default. Users can also + change the value for each sock/asoc/transport by using setsockopt. + For further information, please refer to RFC6951. + + Note that when connecting to a remote server, the client should set + this to the port that the UDP tunneling sock on the peer server is + listening to and the local UDP tunneling sock on the client also + must be started. On the server, it would get the encap_port from + the incoming packet's source port. + + Default: 0 + ``/proc/sys/net/core/*`` ======================== |