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-rw-r--r--Documentation/networking/rxrpc.txt34
-rw-r--r--include/linux/rxrpc.h1
-rw-r--r--include/rxrpc/packet.h2
-rw-r--r--net/rxrpc/af_rxrpc.c23
-rw-r--r--net/rxrpc/ar-internal.h10
-rw-r--r--net/rxrpc/call_accept.c2
-rw-r--r--net/rxrpc/conn_service.c11
7 files changed, 71 insertions, 12 deletions
diff --git a/Documentation/networking/rxrpc.txt b/Documentation/networking/rxrpc.txt
index b7115ec55e04..2a1662760450 100644
--- a/Documentation/networking/rxrpc.txt
+++ b/Documentation/networking/rxrpc.txt
@@ -433,6 +433,13 @@ AF_RXRPC sockets support a few socket options at the SOL_RXRPC level:
Encrypted checksum plus entire packet padded and encrypted, including
actual packet length.
+ (*) RXRPC_UPGRADEABLE_SERVICE
+
+ This is used to indicate that a service socket with two bindings may
+ upgrade one bound service to the other if requested by the client. optval
+ must point to an array of two unsigned short ints. The first is the
+ service ID to upgrade from and the second the service ID to upgrade to.
+
========
SECURITY
@@ -588,7 +595,7 @@ A server would be set up to accept operations in the following manner:
The keyring can be manipulated after it has been given to the socket. This
permits the server to add more keys, replace keys, etc. whilst it is live.
- (2) A local address must then be bound:
+ (3) A local address must then be bound:
struct sockaddr_rxrpc srx = {
.srx_family = AF_RXRPC,
@@ -604,11 +611,22 @@ A server would be set up to accept operations in the following manner:
parameters are the same. The limit is currently two. To do this, bind()
should be called twice.
- (3) The server is then set to listen out for incoming calls:
+ (4) If service upgrading is required, first two service IDs must have been
+ bound and then the following option must be set:
+
+ unsigned short service_ids[2] = { from_ID, to_ID };
+ setsockopt(server, SOL_RXRPC, RXRPC_UPGRADEABLE_SERVICE,
+ service_ids, sizeof(service_ids));
+
+ This will automatically upgrade connections on service from_ID to service
+ to_ID if they request it. This will be reflected in msg_name obtained
+ through recvmsg() when the request data is delivered to userspace.
+
+ (5) The server is then set to listen out for incoming calls:
listen(server, 100);
- (4) The kernel notifies the server of pending incoming connections by sending
+ (6) The kernel notifies the server of pending incoming connections by sending
it a message for each. This is received with recvmsg() on the server
socket. It has no data, and has a single dataless control message
attached:
@@ -620,13 +638,13 @@ A server would be set up to accept operations in the following manner:
the time it is accepted - in which case the first call still on the queue
will be accepted.
- (5) The server then accepts the new call by issuing a sendmsg() with two
+ (7) The server then accepts the new call by issuing a sendmsg() with two
pieces of control data and no actual data:
RXRPC_ACCEPT - indicate connection acceptance
RXRPC_USER_CALL_ID - specify user ID for this call
- (6) The first request data packet will then be posted to the server socket for
+ (8) The first request data packet will then be posted to the server socket for
recvmsg() to pick up. At that point, the RxRPC address for the call can
be read from the address fields in the msghdr struct.
@@ -638,7 +656,7 @@ A server would be set up to accept operations in the following manner:
RXRPC_USER_CALL_ID - specifies the user ID for this call
- (8) The reply data should then be posted to the server socket using a series
+ (9) The reply data should then be posted to the server socket using a series
of sendmsg() calls, each with the following control messages attached:
RXRPC_USER_CALL_ID - specifies the user ID for this call
@@ -646,7 +664,7 @@ A server would be set up to accept operations in the following manner:
MSG_MORE should be set in msghdr::msg_flags on all but the last message
for a particular call.
- (9) The final ACK from the client will be posted for retrieval by recvmsg()
+(10) The final ACK from the client will be posted for retrieval by recvmsg()
when it is received. It will take the form of a dataless message with two
control messages attached:
@@ -656,7 +674,7 @@ A server would be set up to accept operations in the following manner:
MSG_EOR will be flagged to indicate that this is the final message for
this call.
-(10) Up to the point the final packet of reply data is sent, the call can be
+(11) Up to the point the final packet of reply data is sent, the call can be
aborted by calling sendmsg() with a dataless message with the following
control messages attached:
diff --git a/include/linux/rxrpc.h b/include/linux/rxrpc.h
index c68307bc306f..634116561a6a 100644
--- a/include/linux/rxrpc.h
+++ b/include/linux/rxrpc.h
@@ -37,6 +37,7 @@ struct sockaddr_rxrpc {
#define RXRPC_SECURITY_KEYRING 2 /* [srvr] set ring of server security keys */
#define RXRPC_EXCLUSIVE_CONNECTION 3 /* Deprecated; use RXRPC_EXCLUSIVE_CALL instead */
#define RXRPC_MIN_SECURITY_LEVEL 4 /* minimum security level */
+#define RXRPC_UPGRADEABLE_SERVICE 5 /* Upgrade service[0] -> service[1] */
/*
* RxRPC control messages
diff --git a/include/rxrpc/packet.h b/include/rxrpc/packet.h
index 703a64b4681a..a2dcfb850b9f 100644
--- a/include/rxrpc/packet.h
+++ b/include/rxrpc/packet.h
@@ -58,6 +58,8 @@ struct rxrpc_wire_header {
#define RXRPC_SLOW_START_OK 0x20 /* [ACK] slow start supported */
uint8_t userStatus; /* app-layer defined status */
+#define RXRPC_USERSTATUS_SERVICE_UPGRADE 0x01 /* AuriStor service upgrade request */
+
uint8_t securityIndex; /* security protocol ID */
union {
__be16 _rsvd; /* reserved */
diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index 3b982bca7d22..0c4dc4a7832c 100644
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -490,6 +490,7 @@ static int rxrpc_setsockopt(struct socket *sock, int level, int optname,
{
struct rxrpc_sock *rx = rxrpc_sk(sock->sk);
unsigned int min_sec_level;
+ u16 service_upgrade[2];
int ret;
_enter(",%d,%d,,%d", level, optname, optlen);
@@ -546,6 +547,28 @@ static int rxrpc_setsockopt(struct socket *sock, int level, int optname,
rx->min_sec_level = min_sec_level;
goto success;
+ case RXRPC_UPGRADEABLE_SERVICE:
+ ret = -EINVAL;
+ if (optlen != sizeof(service_upgrade) ||
+ rx->service_upgrade.from != 0)
+ goto error;
+ ret = -EISCONN;
+ if (rx->sk.sk_state != RXRPC_SERVER_BOUND2)
+ goto error;
+ ret = -EFAULT;
+ if (copy_from_user(service_upgrade, optval,
+ sizeof(service_upgrade)) != 0)
+ goto error;
+ ret = -EINVAL;
+ if ((service_upgrade[0] != rx->srx.srx_service ||
+ service_upgrade[1] != rx->second_service) &&
+ (service_upgrade[0] != rx->second_service ||
+ service_upgrade[1] != rx->srx.srx_service))
+ goto error;
+ rx->service_upgrade.from = service_upgrade[0];
+ rx->service_upgrade.to = service_upgrade[1];
+ goto success;
+
default:
break;
}
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index 781fbc253b5a..c1ebd886a53f 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -144,8 +144,13 @@ struct rxrpc_sock {
#define RXRPC_SECURITY_MAX RXRPC_SECURITY_ENCRYPT
bool exclusive; /* Exclusive connection for a client socket */
u16 second_service; /* Additional service bound to the endpoint */
+ struct {
+ /* Service upgrade information */
+ u16 from; /* Service ID to upgrade (if not 0) */
+ u16 to; /* service ID to upgrade to */
+ } service_upgrade;
sa_family_t family; /* Protocol family created with */
- struct sockaddr_rxrpc srx; /* local address */
+ struct sockaddr_rxrpc srx; /* Primary Service/local addresses */
struct sockaddr_rxrpc connect_srx; /* Default client address from connect() */
};
@@ -861,7 +866,8 @@ static inline void rxrpc_put_connection(struct rxrpc_connection *conn)
struct rxrpc_connection *rxrpc_find_service_conn_rcu(struct rxrpc_peer *,
struct sk_buff *);
struct rxrpc_connection *rxrpc_prealloc_service_connection(struct rxrpc_net *, gfp_t);
-void rxrpc_new_incoming_connection(struct rxrpc_connection *, struct sk_buff *);
+void rxrpc_new_incoming_connection(struct rxrpc_sock *,
+ struct rxrpc_connection *, struct sk_buff *);
void rxrpc_unpublish_service_conn(struct rxrpc_connection *);
/*
diff --git a/net/rxrpc/call_accept.c b/net/rxrpc/call_accept.c
index 544df53ccf79..0d4d84e8c074 100644
--- a/net/rxrpc/call_accept.c
+++ b/net/rxrpc/call_accept.c
@@ -296,7 +296,7 @@ static struct rxrpc_call *rxrpc_alloc_incoming_call(struct rxrpc_sock *rx,
conn->params.local = local;
conn->params.peer = peer;
rxrpc_see_connection(conn);
- rxrpc_new_incoming_connection(conn, skb);
+ rxrpc_new_incoming_connection(rx, conn, skb);
} else {
rxrpc_get_connection(conn);
}
diff --git a/net/rxrpc/conn_service.c b/net/rxrpc/conn_service.c
index c7f8682a55b2..e60fcd2a4a02 100644
--- a/net/rxrpc/conn_service.c
+++ b/net/rxrpc/conn_service.c
@@ -150,7 +150,8 @@ struct rxrpc_connection *rxrpc_prealloc_service_connection(struct rxrpc_net *rxn
* Set up an incoming connection. This is called in BH context with the RCU
* read lock held.
*/
-void rxrpc_new_incoming_connection(struct rxrpc_connection *conn,
+void rxrpc_new_incoming_connection(struct rxrpc_sock *rx,
+ struct rxrpc_connection *conn,
struct sk_buff *skb)
{
struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
@@ -168,6 +169,14 @@ void rxrpc_new_incoming_connection(struct rxrpc_connection *conn,
else
conn->state = RXRPC_CONN_SERVICE;
+ /* See if we should upgrade the service. This can only happen on the
+ * first packet on a new connection. Once done, it applies to all
+ * subsequent calls on that connection.
+ */
+ if (sp->hdr.userStatus == RXRPC_USERSTATUS_SERVICE_UPGRADE &&
+ conn->service_id == rx->service_upgrade.from)
+ conn->service_id = rx->service_upgrade.to;
+
/* Make the connection a target for incoming packets. */
rxrpc_publish_service_conn(conn->params.peer, conn);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.