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path: root/net/rxrpc/af_rxrpc.c
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Diffstat (limited to 'net/rxrpc/af_rxrpc.c')
-rw-r--r--net/rxrpc/af_rxrpc.c23
1 files changed, 23 insertions, 0 deletions
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;
}