svcrdma: RDMA support not yet compatible with RPC6

RPC6 requires that it be possible to create endpoints that listen
exclusively for IPv4 or IPv6 connection requests. This is not currently
supported by the RDMA API.

This fixes a server RDMA regression introduced by 37498292a "NFSD:
Create PF_INET6 listener in write_ports".

Signed-off-by: Tom Tucker<tom@opengridcomputing.com>
Tested-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index 3fa5751af0ecca4b03002d19a804f969b7011096..4e6bbf91a5707dcdd2fe8d878092b10615339752 100644 (file)
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -678,7 +678,10 @@ static struct svc_xprt *svc_rdma_create(struct svc_serv *serv,
        int ret;
 
        dprintk("svcrdma: Creating RDMA socket\n");
-
+       if (sa->sa_family != AF_INET) {
+               dprintk("svcrdma: Address family %d is not supported.\n", sa->sa_family);
+               return ERR_PTR(-EAFNOSUPPORT);
+       }
        cma_xprt = rdma_create_xprt(serv, 1);
        if (!cma_xprt)
                return ERR_PTR(-ENOMEM);