path: root/net/rxrpc/local_object.c
diff options
authorDavid Howells <dhowells@redhat.com>2017-06-05 14:30:49 +0100
committerDavid Howells <dhowells@redhat.com>2017-06-05 14:30:49 +0100
commit28036f44851e2515aa91b547b45cefddcac52ff6 (patch)
treea129c98f3113b73140e4c81a159e2d9cc076a63f /net/rxrpc/local_object.c
parent68d6d1ae5c0429bcc8911e1db5f80fe2cd1ca974 (diff)
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/local_object.c')
1 files changed, 1 insertions, 0 deletions
diff --git a/net/rxrpc/local_object.c b/net/rxrpc/local_object.c
index 17d79fd73ade..38b99db30e54 100644
--- a/net/rxrpc/local_object.c
+++ b/net/rxrpc/local_object.c
@@ -94,6 +94,7 @@ static struct rxrpc_local *rxrpc_alloc_local(struct rxrpc_net *rxnet,
local->debug_id = atomic_inc_return(&rxrpc_debug_id);
memcpy(&local->srx, srx, sizeof(*srx));
+ local->srx.srx_service = 0;
_leave(" = %p", local);