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| author | David Howells <dhowells@redhat.com> | 2016-04-04 14:00:37 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2016-06-22 09:10:00 +0100 |
| commit | cc8feb8edd92d854be552fe4f5e0eeabca40b9ee (patch) | |
| tree | 63c8bb0b2738f0c6b98cc51e58ef6a7611ddbc07 /include | |
| parent | 85f32278bd98fa89dff528b0baea4ae6eea4cc5d (diff) | |
| download | linux-cc8feb8edd92d854be552fe4f5e0eeabca40b9ee.tar.bz2 | |
rxrpc: Fix exclusive connection handling
"Exclusive connections" are meant to be used for a single client call and
then scrapped. The idea is to limit the use of the negotiated security
context. The current code, however, isn't doing this: it is instead
restricting the socket to a single virtual connection and doing all the
calls over that.
This is changed such that the socket no longer maintains a special virtual
connection over which it will do all the calls, but rather gets a new one
each time a new exclusive call is made.
Further, using a socket option for this is a poor choice. It should be
done on sendmsg with a control message marker instead so that calls can be
marked exclusive individually. To that end, add RXRPC_EXCLUSIVE_CALL
which, if passed to sendmsg() as a control message element, will cause the
call to be done on an single-use connection.
The socket option (RXRPC_EXCLUSIVE_CONNECTION) still exists and, if set,
will override any lack of RXRPC_EXCLUSIVE_CALL being specified so that
programs using the setsockopt() will appear to work the same.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/rxrpc.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/rxrpc.h b/include/linux/rxrpc.h index 1e8f216e2cf1..c68307bc306f 100644 --- a/include/linux/rxrpc.h +++ b/include/linux/rxrpc.h @@ -35,7 +35,7 @@ struct sockaddr_rxrpc { */ #define RXRPC_SECURITY_KEY 1 /* [clnt] set client security key */ #define RXRPC_SECURITY_KEYRING 2 /* [srvr] set ring of server security keys */ -#define RXRPC_EXCLUSIVE_CONNECTION 3 /* [clnt] use exclusive RxRPC connection */ +#define RXRPC_EXCLUSIVE_CONNECTION 3 /* Deprecated; use RXRPC_EXCLUSIVE_CALL instead */ #define RXRPC_MIN_SECURITY_LEVEL 4 /* minimum security level */ /* @@ -52,6 +52,7 @@ struct sockaddr_rxrpc { #define RXRPC_LOCAL_ERROR 7 /* -r: local error generated [terminal] */ #define RXRPC_NEW_CALL 8 /* -r: [Service] new incoming call notification */ #define RXRPC_ACCEPT 9 /* s-: [Service] accept request */ +#define RXRPC_EXCLUSIVE_CALL 10 /* s-: Call should be on exclusive connection */ /* * RxRPC security levels |