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From: Michael Tuexen <tuexen@fh-muenster.de>
To: David Laight <David.Laight@ACULAB.COM>
Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>,
	Xin Long <lucien.xin@gmail.com>,
	network dev <netdev@vger.kernel.org>,
	"linux-sctp@vger.kernel.org" <linux-sctp@vger.kernel.org>,
	Neil Horman <nhorman@tuxdriver.com>,
	"davem@davemloft.net" <davem@davemloft.net>,
	"gnault@redhat.com" <gnault@redhat.com>,
	"pabeni@redhat.com" <pabeni@redhat.com>,
	"willemdebruijn.kernel@gmail.com"
	<willemdebruijn.kernel@gmail.com>
Subject: Re: [PATCHv3 net-next 16/16] sctp: enable udp tunneling socks
Date: Thu, 15 Oct 2020 21:35:28 +0000	[thread overview]
Message-ID: <2EF3C673-B68F-4CA8-928E-07B72586434F@fh-muenster.de> (raw)
In-Reply-To: <a5ee7f3c99b14e43aac8938434fd9264@AcuMS.aculab.com>

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> On 15. Oct 2020, at 23:23, David Laight <David.Laight@ACULAB.COM> wrote:
> 
> From: Marcelo Ricardo Leitner
>> Sent: 15 October 2020 18:43
>> 
>> Actually..
>> 
>> On Tue, Oct 13, 2020 at 03:27:41PM +0800, Xin Long wrote:
>> ...
>>> Also add sysctl udp_port to allow changing the listening
>>> sock's port by users.
> 
> I've not read through this change...
> 
> But surely the UDP port (or ports) that you need to use
> will depend on the remote system's configuration.
The local encapsulation port can be system wide, the remote encapsulation port
is per remote address. See https://tools.ietf.org/html/rfc6951#section-5.1

Best regards
Michael
> 
> So they need to be a property of the socket, not a
> system-wide value.
> 
> I can easily imagine my M3UA code connecting to different
> network providers which have decided to use different
> UDP port numbers.
> 
> 	David
> 
> -
> Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
> Registration No: 1397386 (Wales)
> 


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WARNING: multiple messages have this Message-ID (diff)
From: Michael Tuexen <tuexen@fh-muenster.de>
To: David Laight <David.Laight@ACULAB.COM>
Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>,
	Xin Long <lucien.xin@gmail.com>,
	network dev <netdev@vger.kernel.org>,
	"linux-sctp@vger.kernel.org" <linux-sctp@vger.kernel.org>,
	Neil Horman <nhorman@tuxdriver.com>,
	"davem@davemloft.net" <davem@davemloft.net>,
	"gnault@redhat.com" <gnault@redhat.com>,
	"pabeni@redhat.com" <pabeni@redhat.com>,
	"willemdebruijn.kernel@gmail.com"
	<willemdebruijn.kernel@gmail.com>
Subject: Re: [PATCHv3 net-next 16/16] sctp: enable udp tunneling socks
Date: Thu, 15 Oct 2020 23:35:28 +0200	[thread overview]
Message-ID: <2EF3C673-B68F-4CA8-928E-07B72586434F@fh-muenster.de> (raw)
Message-ID: <20201015213528.YQoCRhdWZfji5s28b16xgU1vaucV62-pVsaBSYh6j8U@z> (raw)
In-Reply-To: <a5ee7f3c99b14e43aac8938434fd9264@AcuMS.aculab.com>

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> On 15. Oct 2020, at 23:23, David Laight <David.Laight@ACULAB.COM> wrote:
> 
> From: Marcelo Ricardo Leitner
>> Sent: 15 October 2020 18:43
>> 
>> Actually..
>> 
>> On Tue, Oct 13, 2020 at 03:27:41PM +0800, Xin Long wrote:
>> ...
>>> Also add sysctl udp_port to allow changing the listening
>>> sock's port by users.
> 
> I've not read through this change...
> 
> But surely the UDP port (or ports) that you need to use
> will depend on the remote system's configuration.
The local encapsulation port can be system wide, the remote encapsulation port
is per remote address. See https://tools.ietf.org/html/rfc6951#section-5.1

Best regards
Michael
> 
> So they need to be a property of the socket, not a
> system-wide value.
> 
> I can easily imagine my M3UA code connecting to different
> network providers which have decided to use different
> UDP port numbers.
> 
> 	David
> 
> -
> Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
> Registration No: 1397386 (Wales)
> 


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  reply	other threads:[~2020-10-15 21:35 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-13  7:27 [PATCHv3 net-next 00/16] sctp: Implement RFC6951: UDP Encapsulation of SCTP Xin Long
2020-10-13  7:27 ` Xin Long
2020-10-13  7:27 ` [PATCHv3 net-next 01/16] udp: check udp sock encap_type in __udp_lib_err Xin Long
2020-10-13  7:27   ` Xin Long
2020-10-13  7:27   ` [PATCHv3 net-next 02/16] udp6: move the mss check after udp gso tunnel processing Xin Long
2020-10-13  7:27     ` Xin Long
2020-10-13  7:27     ` [PATCHv3 net-next 03/16] udp: support sctp over udp in skb_udp_tunnel_segment Xin Long
2020-10-13  7:27       ` Xin Long
2020-10-13  7:27       ` [PATCHv3 net-next 04/16] sctp: create udp4 sock and add its encap_rcv Xin Long
2020-10-13  7:27         ` Xin Long
2020-10-13  7:27         ` [PATCHv3 net-next 05/16] sctp: create udp6 sock and set " Xin Long
2020-10-13  7:27           ` Xin Long
2020-10-13  7:27           ` [PATCHv3 net-next 06/16] sctp: add encap_err_lookup for udp encap socks Xin Long
2020-10-13  7:27             ` Xin Long
2020-10-13  7:27             ` [PATCHv3 net-next 07/16] sctp: add encap_port for netns sock asoc and transport Xin Long
2020-10-13  7:27               ` Xin Long
2020-10-13  7:27               ` [PATCHv3 net-next 08/16] sctp: add SCTP_REMOTE_UDP_ENCAPS_PORT sockopt Xin Long
2020-10-13  7:27                 ` Xin Long
2020-10-13  7:27                 ` [PATCHv3 net-next 09/16] sctp: allow changing transport encap_port by peer packets Xin Long
2020-10-13  7:27                   ` Xin Long
2020-10-13  7:27                   ` [PATCHv3 net-next 10/16] sctp: add udphdr to overhead when udp_port is set Xin Long
2020-10-13  7:27                     ` Xin Long
2020-10-13  7:27                     ` [PATCHv3 net-next 11/16] sctp: call sk_setup_caps in sctp_packet_transmit instead Xin Long
2020-10-13  7:27                       ` Xin Long
2020-10-13  7:27                       ` [PATCHv3 net-next 12/16] sctp: support for sending packet over udp4 sock Xin Long
2020-10-13  7:27                         ` Xin Long
2020-10-13  7:27                         ` [PATCHv3 net-next 13/16] sctp: support for sending packet over udp6 sock Xin Long
2020-10-13  7:27                           ` Xin Long
2020-10-13  7:27                           ` [PATCHv3 net-next 14/16] sctp: add the error cause for new encapsulation port restart Xin Long
2020-10-13  7:27                             ` Xin Long
2020-10-13  7:27                             ` [PATCHv3 net-next 15/16] sctp: handle the init chunk matching an existing asoc Xin Long
2020-10-13  7:27                               ` Xin Long
2020-10-13  7:27                               ` [PATCHv3 net-next 16/16] sctp: enable udp tunneling socks Xin Long
2020-10-13  7:27                                 ` Xin Long
2020-10-15 17:42                                 ` Marcelo Ricardo Leitner
2020-10-15 17:42                                   ` Marcelo Ricardo Leitner
2020-10-15 21:23                                   ` David Laight
2020-10-15 21:35                                     ` Michael Tuexen [this message]
2020-10-15 21:35                                       ` Michael Tuexen
2020-10-16  7:08                                   ` Xin Long
2020-10-16  7:08                                     ` Xin Long
2020-10-19 10:40                                     ` Xin Long
2020-10-19 10:40                                       ` Xin Long
2020-10-13 17:19     ` [PATCHv3 net-next 02/16] udp6: move the mss check after udp gso tunnel processing Willem de Bruijn
2020-10-13 17:19       ` Willem de Bruijn
2020-10-15  3:34 ` [PATCHv3 net-next 00/16] sctp: Implement RFC6951: UDP Encapsulation of SCTP Jakub Kicinski
2020-10-15  3:34   ` Jakub Kicinski
2020-10-15 12:41   ` Marcelo Ricardo Leitner
2020-10-15 12:41     ` Marcelo Ricardo Leitner

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