pNFS/flexfiles: Fix up layoutstats reporting for non-TCP transports

Ensure that we report the correct netid when using UDP or RDMA
transports to the DSes.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

fs/nfs/flexfilelayout/flexfilelayout.c

@@ -2284,7 +2284,6 @@ ff_layout_encode_netaddr(struct xdr_stream *xdr, struct nfs4_pnfs_ds_addr *da)
 	struct sockaddr *sap = (struct sockaddr *)&da->da_addr;
 	char portbuf[RPCBIND_MAXUADDRPLEN];
 	char addrbuf[RPCBIND_MAXUADDRLEN];
-	char *netid;
 	unsigned short port;
 	int len, netid_len;
 	__be32 *p;
@@ -2294,18 +2293,13 @@ ff_layout_encode_netaddr(struct xdr_stream *xdr, struct nfs4_pnfs_ds_addr *da)
 		if (ff_layout_ntop4(sap, addrbuf, sizeof(addrbuf)) == 0)
 			return;
 		port = ntohs(((struct sockaddr_in *)sap)->sin_port);
-		netid = "tcp";
-		netid_len = 3;
 		break;
 	case AF_INET6:
 		if (ff_layout_ntop6_noscopeid(sap, addrbuf, sizeof(addrbuf)) == 0)
 			return;
 		port = ntohs(((struct sockaddr_in6 *)sap)->sin6_port);
-		netid = "tcp6";
-		netid_len = 4;
 		break;
 	default:
-		/* we only support tcp and tcp6 */
 		WARN_ON_ONCE(1);
 		return;
 	}
@@ -2313,8 +2307,9 @@ ff_layout_encode_netaddr(struct xdr_stream *xdr, struct nfs4_pnfs_ds_addr *da)
 	snprintf(portbuf, sizeof(portbuf), ".%u.%u", port >> 8, port & 0xff);
 	len = strlcat(addrbuf, portbuf, sizeof(addrbuf));
 
+	netid_len = strlen(da->da_netid);
 	p = xdr_reserve_space(xdr, 4 + netid_len);
-	xdr_encode_opaque(p, netid, netid_len);
+	xdr_encode_opaque(p, da->da_netid, netid_len);
 
 	p = xdr_reserve_space(xdr, 4 + len);
 	xdr_encode_opaque(p, addrbuf, len);