MPTCP Netlink API question.

[pak-ji]

• Generic Netlink API https://github.com/multipath-tcp/mptcp/blob/mptcp_trunk/include/uapi/linux/mptcp.h

   Commands for MPTCP:
    * MPTCP_CMD_ANNOUNCE: token, loc_id, family, saddr4 | saddr6 [, sport]
    * Announce a new address to the peer.
  

Q1) Is the token used here local_token or remotetoken? And Q2) Where can I get a token? ("/proc/net/mptcp_net/mptcp"_ => Is it okay to use tokens that exist in that path?)

[VenkateswaranJ]

Q1) Is the token used here local_token or remote_token? Local token Q2) Where can I get a token? ("/proc/net/mptcp_net/mptcp" => Is it okay to use tokens that exist in that path?) Yes (also you will get the token on mptcp create/established events)

[pak-ji]

@VenkateswaranJ Thank you so much :)

[matttbe]

Hi,

Typically, you get tokens by listening to events, e.g. MPTCP_EVENT_CREATED → a new MPTCP connection has been created, the token (and more) is provided.

Note that in /proc/net/mptcp_net/mptcp, the token is only readable by the root user.

[pak-ji]

@matttbe Thank you so much :)