[PATCH net-next 08/12] rxrpc: Allow the app to store private data on peer structs

[David Howells]

Provide a way for the application (e.g. the afs filesystem) to store
private data on the rxrpc_peer structs for later retrieval via the call
object.

This will allow afs to store a pointer to the afs_server object on the
rxrpc_peer struct, thereby obviating the need for afs to keep lookup tables
by which it can associate an incoming call with server that transmitted it.

Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
cc: Marc Dionne <marc.dionne@xxxxxxxxxxxx>
cc: Jakub Kicinski <kuba@xxxxxxxxxx>
cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
cc: Eric Dumazet <edumazet@xxxxxxxxxx>
cc: Paolo Abeni <pabeni@xxxxxxxxxx>
cc: Simon Horman <horms@xxxxxxxxxx>
cc: linux-afs@xxxxxxxxxxxxxxxxxxx
cc: netdev@xxxxxxxxxxxxxxx
---
 net/rxrpc/oob.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/rxrpc/oob.c b/net/rxrpc/oob.c
index 8a8893463d95..f860148a8ca4 100644
--- a/net/rxrpc/oob.c
+++ b/net/rxrpc/oob.c
@@ -271,7 +271,7 @@ enum rxrpc_oob_type rxrpc_kernel_query_oob(struct sk_buff *oob,
 	switch (type) {
 	case RXRPC_OOB_CHALLENGE:
 		*_peer		= sp->chall.conn->peer;
-		*_peer_appdata	= 0; /* TODO: retrieve appdata */
+		*_peer_appdata	= sp->chall.conn->peer->app_data;
 		break;
 	default:
 		WARN_ON_ONCE(1);
@@ -342,7 +342,7 @@ void rxrpc_kernel_query_challenge(struct sk_buff *challenge,
 	struct rxrpc_skb_priv *sp = rxrpc_skb(challenge);
 
 	*_peer		= sp->chall.conn->peer;
-	*_peer_appdata	= 0; /* TODO: retrieve appdata */
+	*_peer_appdata	= sp->chall.conn->peer->app_data;
 	*_service_id	= sp->hdr.serviceId;
 	*_security_index = sp->hdr.securityIndex;
 }