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authorDavid Howells <dhowells@redhat.com>2016-04-04 16:00:37 +0300
committerDavid Howells <dhowells@redhat.com>2016-06-22 11:10:00 +0300
commitcc8feb8edd92d854be552fe4f5e0eeabca40b9ee (patch)
tree63c8bb0b2738f0c6b98cc51e58ef6a7611ddbc07 /include/linux/rxrpc.h
parent85f32278bd98fa89dff528b0baea4ae6eea4cc5d (diff)
downloadlinux-cc8feb8edd92d854be552fe4f5e0eeabca40b9ee.tar.xz
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/linux/rxrpc.h')
-rw-r--r--include/linux/rxrpc.h3
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