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| author | David Howells <dhowells@redhat.com> | 2017-06-05 14:30:49 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2017-06-05 14:30:49 +0100 |
| commit | 28036f44851e2515aa91b547b45cefddcac52ff6 (patch) | |
| tree | a129c98f3113b73140e4c81a159e2d9cc076a63f /net/rxrpc/ar-internal.h | |
| parent | 68d6d1ae5c0429bcc8911e1db5f80fe2cd1ca974 (diff) | |
| download | op-kernel-dev-28036f44851e2515aa91b547b45cefddcac52ff6.zip op-kernel-dev-28036f44851e2515aa91b547b45cefddcac52ff6.tar.gz | |
rxrpc: Permit multiple service binding
Permit bind() to be called on an AF_RXRPC socket more than once (currently
maximum twice) to bind multiple listening services to it. There are some
restrictions:
(1) All bind() calls involved must have a non-zero service ID.
(2) The service IDs must all be different.
(3) The rest of the address (notably the transport part) must be the same
in all (a single UDP socket is shared).
(4) This must be done before listen() or sendmsg() is called.
This allows someone to connect to the service socket with different service
IDs and lays the foundation for service upgrading.
The service ID used by an incoming call can be extracted from the msg_name
returned by recvmsg().
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'net/rxrpc/ar-internal.h')
| -rw-r--r-- | net/rxrpc/ar-internal.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h index de98a49..781fbc2 100644 --- a/net/rxrpc/ar-internal.h +++ b/net/rxrpc/ar-internal.h @@ -61,6 +61,7 @@ enum { RXRPC_CLIENT_UNBOUND, /* Unbound socket used as client */ RXRPC_CLIENT_BOUND, /* client local address bound */ RXRPC_SERVER_BOUND, /* server local address bound */ + RXRPC_SERVER_BOUND2, /* second server local address bound */ RXRPC_SERVER_LISTENING, /* server listening for connections */ RXRPC_SERVER_LISTEN_DISABLED, /* server listening disabled */ RXRPC_CLOSE, /* socket is being closed */ @@ -142,6 +143,7 @@ struct rxrpc_sock { u32 min_sec_level; /* minimum security level */ #define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT bool exclusive; /* Exclusive connection for a client socket */ + u16 second_service; /* Additional service bound to the endpoint */ sa_family_t family; /* Protocol family created with */ struct sockaddr_rxrpc srx; /* local address */ struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */ |
