diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index c5d763e..af3f7b0 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -225,7 +225,8 @@
 /*****************************************************************************/
 #define QETH_MAX_QUEUES 4
 #define QETH_IN_BUF_SIZE_DEFAULT 65536
-#define QETH_IN_BUF_COUNT_DEFAULT 16
+#define QETH_IN_BUF_COUNT_DEFAULT 64
+#define QETH_IN_BUF_COUNT_HSDEFAULT 128
 #define QETH_IN_BUF_COUNT_MIN 8
 #define QETH_IN_BUF_COUNT_MAX 128
 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index f3d98ac..25eef304 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -1026,7 +1026,10 @@
 	atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
 	/* inbound */
 	card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
-	card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
+	if (card->info.type == QETH_CARD_TYPE_IQD)
+		card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
+	else
+		card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
 	card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
 	INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
 	INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 6a9cc58..142e5f6 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -3392,6 +3392,8 @@
 			if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
 				card->dev->dev_id = card->info.unique_id &
 							 0xffff;
+			if (!card->info.guestlan)
+				card->dev->features |= NETIF_F_GRO;
 		}
 	} else if (card->info.type == QETH_CARD_TYPE_IQD) {
 		card->dev = alloc_netdev(0, "hsi%d", ether_setup);
@@ -3430,6 +3432,9 @@
 	card->discipline.output_handler = (qdio_handler_t *)
 		qeth_qdio_output_handler;
 	card->discipline.recover = qeth_l3_recover;
+	if ((card->info.type == QETH_CARD_TYPE_OSD) ||
+	    (card->info.type == QETH_CARD_TYPE_OSX))
+		card->options.checksum_type = HW_CHECKSUMMING;
 	return 0;
 }