mptcp: Add key generation and token tree
Generate the local keys, IDSN, and token when creating a new socket. Introduce the token tree to track all tokens in use using a radix tree with the MPTCP token itself as the index. Override the rebuild_header callback in inet_connection_sock_af_ops for creating the local key on a new outgoing connection. Override the init_req callback of tcp_request_sock_ops for creating the local key on a new incoming connection. Will be used to obtain the MPTCP parent socket to handle incoming joins. Co-developed-by:Davide Caratti <dcaratti@redhat.com> Signed-off-by:
Davide Caratti <dcaratti@redhat.com> Co-developed-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
Florian Westphal <fw@strlen.de> Co-developed-by:
Paolo Abeni <pabeni@redhat.com> Signed-off-by:
Paolo Abeni <pabeni@redhat.com> Signed-off-by:
Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by:
Christoph Paasch <cpaasch@apple.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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