s390/qeth: use and remove some defines

1. a buffer has 16 is_header flags, because that's its # of elements
2. replace the last occurrence of QETH_HEADER_SIZE, and remove it
Signed-off-by: NJulian Wiedmann <jwi@linux.vnet.ibm.com>
Acked-by: NUrsula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/s390/net/qeth_core.h

@@ -240,7 +240,6 @@ static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
 #define QETH_TX_TIMEOUT		100 * HZ
 #define QETH_RCD_TIMEOUT	60 * HZ
 #define QETH_RECLAIM_WORK_TIME	HZ
-#define QETH_HEADER_SIZE	32
 #define QETH_MAX_PORTNO		15
 
 /*IPv6 address autoconfiguration stuff*/
@@ -447,7 +446,7 @@ struct qeth_qdio_out_buffer {
 	atomic_t state;
 	int next_element_to_fill;
 	struct sk_buff_head skb_list;
-	int is_header[16];
+	int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER];
 
 	struct qaob *aob;
 	struct qeth_qdio_out_q *q;

drivers/s390/net/qeth_l2_main.c

@@ -280,7 +280,7 @@ static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
 	else
 		hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
 
-	hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
+	hdr->hdr.l2.pkt_length = skb->len - sizeof(struct qeth_hdr);
 	/* VSWITCH relies on the VLAN
 	 * information to be present in
 	 * the QDIO header */