1 files changed, 206 insertions, 139 deletions

diff --git a/drivers/s390/net/qeth_eddp.c b/drivers/s390/net/qeth_core_offl.c
index e3c268cfbffe..822df8362856 100644
--- a/drivers/s390/net/qeth_eddp.c
+++ b/drivers/s390/net/qeth_core_offl.c
@@ -1,13 +1,11 @@
 /*
- * linux/drivers/s390/net/qeth_eddp.c
- *
- * Enhanced Device Driver Packing (EDDP) support for the qeth driver.
- *
- * Copyright 2004 IBM Corporation
- *
- *    Author(s): Thomas Spatzier <tspat@de.ibm.com>
+ *  drivers/s390/net/qeth_core_offl.c
  *
+ *    Copyright IBM Corp. 2007
+ *    Author(s): Thomas Spatzier <tspat@de.ibm.com>,
+ *		 Frank Blaschka <frank.blaschka@de.ibm.com>
  */
+
 #include <linux/errno.h>
 #include <linux/ip.h>
 #include <linux/inetdevice.h>
@@ -18,14 +16,14 @@
 #include <linux/skbuff.h>
 
 #include <net/ip.h>
+#include <net/ip6_checksum.h>
 
-#include "qeth.h"
-#include "qeth_mpc.h"
-#include "qeth_eddp.h"
+#include "qeth_core.h"
+#include "qeth_core_mpc.h"
+#include "qeth_core_offl.h"
 
-int
-qeth_eddp_check_buffers_for_context(struct qeth_qdio_out_q *queue,
-				    struct qeth_eddp_context *ctx)
+int qeth_eddp_check_buffers_for_context(struct qeth_qdio_out_q *queue,
+		struct qeth_eddp_context *ctx)
 {
 	int index = queue->next_buf_to_fill;
 	int elements_needed = ctx->num_elements;
@@ -33,8 +31,8 @@ qeth_eddp_check_buffers_for_context(struct qeth_qdio_out_q *queue,
 	int skbs_in_buffer;
 	int buffers_needed = 0;
 
-	QETH_DBF_TEXT(trace, 5, "eddpcbfc");
-	while(elements_needed > 0) {
+	QETH_DBF_TEXT(TRACE, 5, "eddpcbfc");
+	while (elements_needed > 0) {
 		buffers_needed++;
 		if (atomic_read(&queue->bufs[index].state) !=
 				QETH_QDIO_BUF_EMPTY)
@@ -49,12 +47,11 @@ qeth_eddp_check_buffers_for_context(struct qeth_qdio_out_q *queue,
 	return buffers_needed;
 }
 
-static void
-qeth_eddp_free_context(struct qeth_eddp_context *ctx)
+static void qeth_eddp_free_context(struct qeth_eddp_context *ctx)
 {
 	int i;
 
-	QETH_DBF_TEXT(trace, 5, "eddpfctx");
+	QETH_DBF_TEXT(TRACE, 5, "eddpfctx");
 	for (i = 0; i < ctx->num_pages; ++i)
 		free_page((unsigned long)ctx->pages[i]);
 	kfree(ctx->pages);
@@ -63,26 +60,24 @@ qeth_eddp_free_context(struct qeth_eddp_context *ctx)
 }
 
 
-static inline void
-qeth_eddp_get_context(struct qeth_eddp_context *ctx)
+static void qeth_eddp_get_context(struct qeth_eddp_context *ctx)
 {
 	atomic_inc(&ctx->refcnt);
 }
 
-void
-qeth_eddp_put_context(struct qeth_eddp_context *ctx)
+void qeth_eddp_put_context(struct qeth_eddp_context *ctx)
 {
 	if (atomic_dec_return(&ctx->refcnt) == 0)
 		qeth_eddp_free_context(ctx);
 }
+EXPORT_SYMBOL_GPL(qeth_eddp_put_context);
 
-void
-qeth_eddp_buf_release_contexts(struct qeth_qdio_out_buffer *buf)
+void qeth_eddp_buf_release_contexts(struct qeth_qdio_out_buffer *buf)
 {
 	struct qeth_eddp_context_reference *ref;
 
-	QETH_DBF_TEXT(trace, 6, "eddprctx");
-	while (!list_empty(&buf->ctx_list)){
+	QETH_DBF_TEXT(TRACE, 6, "eddprctx");
+	while (!list_empty(&buf->ctx_list)) {
 		ref = list_entry(buf->ctx_list.next,
 				 struct qeth_eddp_context_reference, list);
 		qeth_eddp_put_context(ref->ctx);
@@ -91,13 +86,12 @@ qeth_eddp_buf_release_contexts(struct qeth_qdio_out_buffer *buf)
 	}
 }
 
-static int
-qeth_eddp_buf_ref_context(struct qeth_qdio_out_buffer *buf,
-			  struct qeth_eddp_context *ctx)
+static int qeth_eddp_buf_ref_context(struct qeth_qdio_out_buffer *buf,
+		struct qeth_eddp_context *ctx)
 {
 	struct qeth_eddp_context_reference *ref;
 
-	QETH_DBF_TEXT(trace, 6, "eddprfcx");
+	QETH_DBF_TEXT(TRACE, 6, "eddprfcx");
 	ref = kmalloc(sizeof(struct qeth_eddp_context_reference), GFP_ATOMIC);
 	if (ref == NULL)
 		return -ENOMEM;
@@ -107,10 +101,8 @@ qeth_eddp_buf_ref_context(struct qeth_qdio_out_buffer *buf,
 	return 0;
 }
 
-int
-qeth_eddp_fill_buffer(struct qeth_qdio_out_q *queue,
-		      struct qeth_eddp_context *ctx,
-		      int index)
+int qeth_eddp_fill_buffer(struct qeth_qdio_out_q *queue,
+		struct qeth_eddp_context *ctx, int index)
 {
 	struct qeth_qdio_out_buffer *buf = NULL;
 	struct qdio_buffer *buffer;
@@ -120,10 +112,10 @@ qeth_eddp_fill_buffer(struct qeth_qdio_out_q *queue,
 	int must_refcnt = 1;
 	int i;
 
-	QETH_DBF_TEXT(trace, 5, "eddpfibu");
+	QETH_DBF_TEXT(TRACE, 5, "eddpfibu");
 	while (elements > 0) {
 		buf = &queue->bufs[index];
-		if (atomic_read(&buf->state) != QETH_QDIO_BUF_EMPTY){
+		if (atomic_read(&buf->state) != QETH_QDIO_BUF_EMPTY) {
 			/* normally this should not happen since we checked for
 			 * available elements in qeth_check_elements_for_context
 			 */
@@ -148,9 +140,9 @@ qeth_eddp_fill_buffer(struct qeth_qdio_out_q *queue,
 			must_refcnt = 1;
 			continue;
 		}
-		if (must_refcnt){
+		if (must_refcnt) {
 			must_refcnt = 0;
-			if (qeth_eddp_buf_ref_context(buf, ctx)){
+			if (qeth_eddp_buf_ref_context(buf, ctx)) {
 				PRINT_WARN("no memory to create eddp context "
 					   "reference\n");
 				goto out_check;
@@ -158,7 +150,7 @@ qeth_eddp_fill_buffer(struct qeth_qdio_out_q *queue,
 		}
 		buffer = buf->buffer;
 		/* fill one skb into buffer */
-		for (i = 0; i < ctx->elements_per_skb; ++i){
+		for (i = 0; i < ctx->elements_per_skb; ++i) {
 			if (ctx->elements[element].length != 0) {
 				buffer->element[buf->next_element_to_fill].
 				addr = ctx->elements[element].addr;
@@ -174,16 +166,16 @@ qeth_eddp_fill_buffer(struct qeth_qdio_out_q *queue,
 	}
 out_check:
 	if (!queue->do_pack) {
-		QETH_DBF_TEXT(trace, 6, "fillbfnp");
+		QETH_DBF_TEXT(TRACE, 6, "fillbfnp");
 		/* set state to PRIMED -> will be flushed */
-		if (buf->next_element_to_fill > 0){
+		if (buf->next_element_to_fill > 0) {
 			atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
 			flush_cnt++;
 		}
 	} else {
 		if (queue->card->options.performance_stats)
 			queue->card->perf_stats.skbs_sent_pack++;
-		QETH_DBF_TEXT(trace, 6, "fillbfpa");
+		QETH_DBF_TEXT(TRACE, 6, "fillbfpa");
 		if (buf->next_element_to_fill >=
 				QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
 			/*
@@ -198,9 +190,8 @@ out:
 	return flush_cnt;
 }
 
-static void
-qeth_eddp_create_segment_hdrs(struct qeth_eddp_context *ctx,
-			      struct qeth_eddp_data *eddp, int data_len)
+static void qeth_eddp_create_segment_hdrs(struct qeth_eddp_context *ctx,
+		struct qeth_eddp_data *eddp, int data_len)
 {
 	u8 *page;
 	int page_remainder;
@@ -208,7 +199,7 @@ qeth_eddp_create_segment_hdrs(struct qeth_eddp_context *ctx,
 	int pkt_len;
 	struct qeth_eddp_element *element;
 
-	QETH_DBF_TEXT(trace, 5, "eddpcrsh");
+	QETH_DBF_TEXT(TRACE, 5, "eddpcrsh");
 	page = ctx->pages[ctx->offset >> PAGE_SHIFT];
 	page_offset = ctx->offset % PAGE_SIZE;
 	element = &ctx->elements[ctx->num_elements];
@@ -220,7 +211,7 @@ qeth_eddp_create_segment_hdrs(struct qeth_eddp_context *ctx,
 		pkt_len += VLAN_HLEN;
 	/* does complete packet fit in current page ? */
 	page_remainder = PAGE_SIZE - page_offset;
-	if (page_remainder < (sizeof(struct qeth_hdr) + pkt_len)){
+	if (page_remainder < (sizeof(struct qeth_hdr) + pkt_len)) {
 		/* no -> go to start of next page */
 		ctx->offset += page_remainder;
 		page = ctx->pages[ctx->offset >> PAGE_SHIFT];
@@ -232,14 +223,14 @@ qeth_eddp_create_segment_hdrs(struct qeth_eddp_context *ctx,
 	ctx->offset += sizeof(struct qeth_hdr);
 	page_offset += sizeof(struct qeth_hdr);
 	/* add mac header (?) */
-	if (eddp->qh.hdr.l2.id == QETH_HEADER_TYPE_LAYER2){
+	if (eddp->qh.hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
 		memcpy(page + page_offset, &eddp->mac, ETH_HLEN);
 		element->length += ETH_HLEN;
 		ctx->offset += ETH_HLEN;
 		page_offset += ETH_HLEN;
 	}
 	/* add VLAN tag */
-	if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q)){
+	if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q)) {
 		memcpy(page + page_offset, &eddp->vlan, VLAN_HLEN);
 		element->length += VLAN_HLEN;
 		ctx->offset += VLAN_HLEN;
@@ -258,16 +249,15 @@ qeth_eddp_create_segment_hdrs(struct qeth_eddp_context *ctx,
 	ctx->offset += eddp->thl;
 }
 
-static void
-qeth_eddp_copy_data_tcp(char *dst, struct qeth_eddp_data *eddp, int len,
-			__wsum *hcsum)
+static void qeth_eddp_copy_data_tcp(char *dst, struct qeth_eddp_data *eddp,
+		int len, __wsum *hcsum)
 {
 	struct skb_frag_struct *frag;
 	int left_in_frag;
 	int copy_len;
 	u8 *src;
 
-	QETH_DBF_TEXT(trace, 5, "eddpcdtc");
+	QETH_DBF_TEXT(TRACE, 5, "eddpcdtc");
 	if (skb_shinfo(eddp->skb)->nr_frags == 0) {
 		skb_copy_from_linear_data_offset(eddp->skb, eddp->skb_offset,
 						 dst, len);
@@ -278,16 +268,17 @@ qeth_eddp_copy_data_tcp(char *dst, struct qeth_eddp_data *eddp, int len,
 		while (len > 0) {
 			if (eddp->frag < 0) {
 				/* we're in skb->data */
-				left_in_frag = (eddp->skb->len - eddp->skb->data_len)
+				left_in_frag = (eddp->skb->len -
+						eddp->skb->data_len)
 						- eddp->skb_offset;
 				src = eddp->skb->data + eddp->skb_offset;
 			} else {
-				frag = &skb_shinfo(eddp->skb)->
-					frags[eddp->frag];
+				frag = &skb_shinfo(eddp->skb)->frags[
+					eddp->frag];
 				left_in_frag = frag->size - eddp->frag_offset;
-				src = (u8 *)(
-					(page_to_pfn(frag->page) << PAGE_SHIFT)+
-					frag->page_offset + eddp->frag_offset);
+				src = (u8 *)((page_to_pfn(frag->page) <<
+					PAGE_SHIFT) + frag->page_offset +
+					eddp->frag_offset);
 			}
 			if (left_in_frag <= 0) {
 				eddp->frag++;
@@ -305,10 +296,8 @@ qeth_eddp_copy_data_tcp(char *dst, struct qeth_eddp_data *eddp, int len,
 	}
 }
 
-static void
-qeth_eddp_create_segment_data_tcp(struct qeth_eddp_context *ctx,
-				  struct qeth_eddp_data *eddp, int data_len,
-				  __wsum hcsum)
+static void qeth_eddp_create_segment_data_tcp(struct qeth_eddp_context *ctx,
+		struct qeth_eddp_data *eddp, int data_len, __wsum hcsum)
 {
 	u8 *page;
 	int page_remainder;
@@ -316,13 +305,13 @@ qeth_eddp_create_segment_data_tcp(struct qeth_eddp_context *ctx,
 	struct qeth_eddp_element *element;
 	int first_lap = 1;
 
-	QETH_DBF_TEXT(trace, 5, "eddpcsdt");
+	QETH_DBF_TEXT(TRACE, 5, "eddpcsdt");
 	page = ctx->pages[ctx->offset >> PAGE_SHIFT];
 	page_offset = ctx->offset % PAGE_SIZE;
 	element = &ctx->elements[ctx->num_elements];
-	while (data_len){
+	while (data_len) {
 		page_remainder = PAGE_SIZE - page_offset;
-		if (page_remainder < data_len){
+		if (page_remainder < data_len) {
 			qeth_eddp_copy_data_tcp(page + page_offset, eddp,
 						page_remainder, &hcsum);
 			element->length += page_remainder;
@@ -352,12 +341,12 @@ qeth_eddp_create_segment_data_tcp(struct qeth_eddp_context *ctx,
 	((struct tcphdr *)eddp->th_in_ctx)->check = csum_fold(hcsum);
 }
 
-static __wsum
-qeth_eddp_check_tcp4_hdr(struct qeth_eddp_data *eddp, int data_len)
+static __wsum qeth_eddp_check_tcp4_hdr(struct qeth_eddp_data *eddp,
+		int data_len)
 {
 	__wsum phcsum; /* pseudo header checksum */
 
-	QETH_DBF_TEXT(trace, 5, "eddpckt4");
+	QETH_DBF_TEXT(TRACE, 5, "eddpckt4");
 	eddp->th.tcp.h.check = 0;
 	/* compute pseudo header checksum */
 	phcsum = csum_tcpudp_nofold(eddp->nh.ip4.h.saddr, eddp->nh.ip4.h.daddr,
@@ -366,13 +355,13 @@ qeth_eddp_check_tcp4_hdr(struct qeth_eddp_data *eddp, int data_len)
 	return csum_partial((u8 *)&eddp->th, eddp->thl, phcsum);
 }
 
-static __wsum
-qeth_eddp_check_tcp6_hdr(struct qeth_eddp_data *eddp, int data_len)
+static __wsum qeth_eddp_check_tcp6_hdr(struct qeth_eddp_data *eddp,
+		int data_len)
 {
 	__be32 proto;
 	__wsum phcsum; /* pseudo header checksum */
 
-	QETH_DBF_TEXT(trace, 5, "eddpckt6");
+	QETH_DBF_TEXT(TRACE, 5, "eddpckt6");
 	eddp->th.tcp.h.check = 0;
 	/* compute pseudo header checksum */
 	phcsum = csum_partial((u8 *)&eddp->nh.ip6.h.saddr,
@@ -384,14 +373,14 @@ qeth_eddp_check_tcp6_hdr(struct qeth_eddp_data *eddp, int data_len)
 	return phcsum;
 }
 
-static struct qeth_eddp_data *
-qeth_eddp_create_eddp_data(struct qeth_hdr *qh, u8 *nh, u8 nhl, u8 *th, u8 thl)
+static struct qeth_eddp_data *qeth_eddp_create_eddp_data(struct qeth_hdr *qh,
+		u8 *nh, u8 nhl, u8 *th, u8 thl)
 {
 	struct qeth_eddp_data *eddp;
 
-	QETH_DBF_TEXT(trace, 5, "eddpcrda");
+	QETH_DBF_TEXT(TRACE, 5, "eddpcrda");
 	eddp = kzalloc(sizeof(struct qeth_eddp_data), GFP_ATOMIC);
-	if (eddp){
+	if (eddp) {
 		eddp->nhl = nhl;
 		eddp->thl = thl;
 		memcpy(&eddp->qh, qh, sizeof(struct qeth_hdr));
@@ -402,40 +391,35 @@ qeth_eddp_create_eddp_data(struct qeth_hdr *qh, u8 *nh, u8 nhl, u8 *th, u8 thl)
 	return eddp;
 }
 
-static void
-__qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
-			     struct qeth_eddp_data *eddp)
+static void __qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
+		struct qeth_eddp_data *eddp)
 {
 	struct tcphdr *tcph;
 	int data_len;
 	__wsum hcsum;
 
-	QETH_DBF_TEXT(trace, 5, "eddpftcp");
+	QETH_DBF_TEXT(TRACE, 5, "eddpftcp");
 	eddp->skb_offset = sizeof(struct qeth_hdr) + eddp->nhl + eddp->thl;
-       if (eddp->qh.hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
-               eddp->skb_offset += sizeof(struct ethhdr);
-#ifdef CONFIG_QETH_VLAN
-               if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q))
-                       eddp->skb_offset += VLAN_HLEN;
-#endif /* CONFIG_QETH_VLAN */
-       }
+	if (eddp->qh.hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
+		eddp->skb_offset += sizeof(struct ethhdr);
+		if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q))
+			eddp->skb_offset += VLAN_HLEN;
+	}
 	tcph = tcp_hdr(eddp->skb);
 	while (eddp->skb_offset < eddp->skb->len) {
 		data_len = min((int)skb_shinfo(eddp->skb)->gso_size,
 			       (int)(eddp->skb->len - eddp->skb_offset));
 		/* prepare qdio hdr */
-		if (eddp->qh.hdr.l2.id == QETH_HEADER_TYPE_LAYER2){
+		if (eddp->qh.hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
 			eddp->qh.hdr.l2.pkt_length = data_len + ETH_HLEN +
 						     eddp->nhl + eddp->thl;
-#ifdef CONFIG_QETH_VLAN
 			if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q))
 				eddp->qh.hdr.l2.pkt_length += VLAN_HLEN;
-#endif /* CONFIG_QETH_VLAN */
 		} else
 			eddp->qh.hdr.l3.length = data_len + eddp->nhl +
 						 eddp->thl;
 		/* prepare ip hdr */
-		if (eddp->skb->protocol == htons(ETH_P_IP)){
+		if (eddp->skb->protocol == htons(ETH_P_IP)) {
 			eddp->nh.ip4.h.tot_len = htons(data_len + eddp->nhl +
 						 eddp->thl);
 			eddp->nh.ip4.h.check = 0;
@@ -443,9 +427,10 @@ __qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
 				ip_fast_csum((u8 *)&eddp->nh.ip4.h,
 						eddp->nh.ip4.h.ihl);
 		} else
-			eddp->nh.ip6.h.payload_len = htons(data_len + eddp->thl);
+			eddp->nh.ip6.h.payload_len = htons(data_len +
+								eddp->thl);
 		/* prepare tcp hdr */
-		if (data_len == (eddp->skb->len - eddp->skb_offset)){
+		if (data_len == (eddp->skb->len - eddp->skb_offset)) {
 			/* last segment -> set FIN and PSH flags */
 			eddp->th.tcp.h.fin = tcph->fin;
 			eddp->th.tcp.h.psh = tcph->psh;
@@ -462,17 +447,17 @@ __qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
 		/* prepare headers for next round */
 		if (eddp->skb->protocol == htons(ETH_P_IP))
 			eddp->nh.ip4.h.id = htons(ntohs(eddp->nh.ip4.h.id) + 1);
-		eddp->th.tcp.h.seq = htonl(ntohl(eddp->th.tcp.h.seq) + data_len);
+		eddp->th.tcp.h.seq = htonl(ntohl(eddp->th.tcp.h.seq) +
+			data_len);
 	}
 }
 
-static int
-qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
-			   struct sk_buff *skb, struct qeth_hdr *qhdr)
+static int qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
+		struct sk_buff *skb, struct qeth_hdr *qhdr)
 {
 	struct qeth_eddp_data *eddp = NULL;
 
-	QETH_DBF_TEXT(trace, 5, "eddpficx");
+	QETH_DBF_TEXT(TRACE, 5, "eddpficx");
 	/* create our segmentation headers and copy original headers */
 	if (skb->protocol == htons(ETH_P_IP))
 		eddp = qeth_eddp_create_eddp_data(qhdr,
@@ -488,18 +473,16 @@ qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
 						  tcp_hdrlen(skb));
 
 	if (eddp == NULL) {
-		QETH_DBF_TEXT(trace, 2, "eddpfcnm");
+		QETH_DBF_TEXT(TRACE, 2, "eddpfcnm");
 		return -ENOMEM;
 	}
 	if (qhdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
 		skb_set_mac_header(skb, sizeof(struct qeth_hdr));
 		memcpy(&eddp->mac, eth_hdr(skb), ETH_HLEN);
-#ifdef CONFIG_QETH_VLAN
 		if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q)) {
 			eddp->vlan[0] = skb->protocol;
 			eddp->vlan[1] = htons(vlan_tx_tag_get(skb));
 		}
-#endif /* CONFIG_QETH_VLAN */
 	}
 	/* the next flags will only be set on the last segment */
 	eddp->th.tcp.h.fin = 0;
@@ -511,16 +494,15 @@ qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
 	return 0;
 }
 
-static void
-qeth_eddp_calc_num_pages(struct qeth_eddp_context *ctx, struct sk_buff *skb,
-			 int hdr_len)
+static void qeth_eddp_calc_num_pages(struct qeth_eddp_context *ctx,
+		struct sk_buff *skb, int hdr_len)
 {
 	int skbs_per_page;
 
-	QETH_DBF_TEXT(trace, 5, "eddpcanp");
+	QETH_DBF_TEXT(TRACE, 5, "eddpcanp");
 	/* can we put multiple skbs in one page? */
 	skbs_per_page = PAGE_SIZE / (skb_shinfo(skb)->gso_size + hdr_len);
-	if (skbs_per_page > 1){
+	if (skbs_per_page > 1) {
 		ctx->num_pages = (skb_shinfo(skb)->gso_segs + 1) /
 				 skbs_per_page + 1;
 		ctx->elements_per_skb = 1;
@@ -535,49 +517,47 @@ qeth_eddp_calc_num_pages(struct qeth_eddp_context *ctx, struct sk_buff *skb,
 			    (skb_shinfo(skb)->gso_segs + 1);
 }
 
-static struct qeth_eddp_context *
-qeth_eddp_create_context_generic(struct qeth_card *card, struct sk_buff *skb,
-				 int hdr_len)
+static struct qeth_eddp_context *qeth_eddp_create_context_generic(
+		struct qeth_card *card, struct sk_buff *skb, int hdr_len)
 {
 	struct qeth_eddp_context *ctx = NULL;
 	u8 *addr;
 	int i;
 
-	QETH_DBF_TEXT(trace, 5, "creddpcg");
+	QETH_DBF_TEXT(TRACE, 5, "creddpcg");
 	/* create the context and allocate pages */
 	ctx = kzalloc(sizeof(struct qeth_eddp_context), GFP_ATOMIC);
-	if (ctx == NULL){
-		QETH_DBF_TEXT(trace, 2, "ceddpcn1");
+	if (ctx == NULL) {
+		QETH_DBF_TEXT(TRACE, 2, "ceddpcn1");
 		return NULL;
 	}
 	ctx->type = QETH_LARGE_SEND_EDDP;
 	qeth_eddp_calc_num_pages(ctx, skb, hdr_len);
-	if (ctx->elements_per_skb > QETH_MAX_BUFFER_ELEMENTS(card)){
-		QETH_DBF_TEXT(trace, 2, "ceddpcis");
+	if (ctx->elements_per_skb > QETH_MAX_BUFFER_ELEMENTS(card)) {
+		QETH_DBF_TEXT(TRACE, 2, "ceddpcis");
 		kfree(ctx);
 		return NULL;
 	}
 	ctx->pages = kcalloc(ctx->num_pages, sizeof(u8 *), GFP_ATOMIC);
-	if (ctx->pages == NULL){
-		QETH_DBF_TEXT(trace, 2, "ceddpcn2");
+	if (ctx->pages == NULL) {
+		QETH_DBF_TEXT(TRACE, 2, "ceddpcn2");
 		kfree(ctx);
 		return NULL;
 	}
-	for (i = 0; i < ctx->num_pages; ++i){
-		addr = (u8 *)__get_free_page(GFP_ATOMIC);
-		if (addr == NULL){
-			QETH_DBF_TEXT(trace, 2, "ceddpcn3");
+	for (i = 0; i < ctx->num_pages; ++i) {
+		addr = (u8 *)get_zeroed_page(GFP_ATOMIC);
+		if (addr == NULL) {
+			QETH_DBF_TEXT(TRACE, 2, "ceddpcn3");
 			ctx->num_pages = i;
 			qeth_eddp_free_context(ctx);
 			return NULL;
 		}
-		memset(addr, 0, PAGE_SIZE);
 		ctx->pages[i] = addr;
 	}
 	ctx->elements = kcalloc(ctx->num_elements,
 				sizeof(struct qeth_eddp_element), GFP_ATOMIC);
-	if (ctx->elements == NULL){
-		QETH_DBF_TEXT(trace, 2, "ceddpcn4");
+	if (ctx->elements == NULL) {
+		QETH_DBF_TEXT(TRACE, 2, "ceddpcn4");
 		qeth_eddp_free_context(ctx);
 		return NULL;
 	}
@@ -587,31 +567,31 @@ qeth_eddp_create_context_generic(struct qeth_card *card, struct sk_buff *skb,
 	return ctx;
 }
 
-static struct qeth_eddp_context *
-qeth_eddp_create_context_tcp(struct qeth_card *card, struct sk_buff *skb,
-			     struct qeth_hdr *qhdr)
+static struct qeth_eddp_context *qeth_eddp_create_context_tcp(
+		struct qeth_card *card, struct sk_buff *skb,
+		struct qeth_hdr *qhdr)
 {
 	struct qeth_eddp_context *ctx = NULL;
 
-	QETH_DBF_TEXT(trace, 5, "creddpct");
+	QETH_DBF_TEXT(TRACE, 5, "creddpct");
 	if (skb->protocol == htons(ETH_P_IP))
 		ctx = qeth_eddp_create_context_generic(card, skb,
-						       (sizeof(struct qeth_hdr) +
-						        ip_hdrlen(skb) +
-							tcp_hdrlen(skb)));
+						(sizeof(struct qeth_hdr) +
+						ip_hdrlen(skb) +
+						tcp_hdrlen(skb)));
 	else if (skb->protocol == htons(ETH_P_IPV6))
 		ctx = qeth_eddp_create_context_generic(card, skb,
 			sizeof(struct qeth_hdr) + sizeof(struct ipv6hdr) +
 			tcp_hdrlen(skb));
 	else
-		QETH_DBF_TEXT(trace, 2, "cetcpinv");
+		QETH_DBF_TEXT(TRACE, 2, "cetcpinv");
 
 	if (ctx == NULL) {
-		QETH_DBF_TEXT(trace, 2, "creddpnl");
+		QETH_DBF_TEXT(TRACE, 2, "creddpnl");
 		return NULL;
 	}
-	if (qeth_eddp_fill_context_tcp(ctx, skb, qhdr)){
-		QETH_DBF_TEXT(trace, 2, "ceddptfe");
+	if (qeth_eddp_fill_context_tcp(ctx, skb, qhdr)) {
+		QETH_DBF_TEXT(TRACE, 2, "ceddptfe");
 		qeth_eddp_free_context(ctx);
 		return NULL;
 	}
@@ -619,16 +599,103 @@ qeth_eddp_create_context_tcp(struct qeth_card *card, struct sk_buff *skb,
 	return ctx;
 }
 
-struct qeth_eddp_context *
-qeth_eddp_create_context(struct qeth_card *card, struct sk_buff *skb,
-			 struct qeth_hdr *qhdr, unsigned char sk_protocol)
+struct qeth_eddp_context *qeth_eddp_create_context(struct qeth_card *card,
+		struct sk_buff *skb, struct qeth_hdr *qhdr,
+		unsigned char sk_protocol)
 {
-	QETH_DBF_TEXT(trace, 5, "creddpc");
+	QETH_DBF_TEXT(TRACE, 5, "creddpc");
 	switch (sk_protocol) {
 	case IPPROTO_TCP:
 		return qeth_eddp_create_context_tcp(card, skb, qhdr);
 	default:
-		QETH_DBF_TEXT(trace, 2, "eddpinvp");
+		QETH_DBF_TEXT(TRACE, 2, "eddpinvp");
 	}
 	return NULL;
 }
+EXPORT_SYMBOL_GPL(qeth_eddp_create_context);
+
+void qeth_tso_fill_header(struct qeth_card *card, struct qeth_hdr *qhdr,
+		struct sk_buff *skb)
+{
+	struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
+	struct tcphdr *tcph = tcp_hdr(skb);
+	struct iphdr *iph = ip_hdr(skb);
+	struct ipv6hdr *ip6h = ipv6_hdr(skb);
+
+	QETH_DBF_TEXT(TRACE, 5, "tsofhdr");
+
+	/*fix header to TSO values ...*/
+	hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
+	/*set values which are fix for the first approach ...*/
+	hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
+	hdr->ext.imb_hdr_no  = 1;
+	hdr->ext.hdr_type    = 1;
+	hdr->ext.hdr_version = 1;
+	hdr->ext.hdr_len     = 28;
+	/*insert non-fix values */
+	hdr->ext.mss = skb_shinfo(skb)->gso_size;
+	hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
+	hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
+				       sizeof(struct qeth_hdr_tso));
+	tcph->check = 0;
+	if (skb->protocol == ETH_P_IPV6) {
+		ip6h->payload_len = 0;
+		tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
+					       0, IPPROTO_TCP, 0);
+	} else {
+		/*OSA want us to set these values ...*/
+		tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
+					 0, IPPROTO_TCP, 0);
+		iph->tot_len = 0;
+		iph->check = 0;
+	}
+}
+EXPORT_SYMBOL_GPL(qeth_tso_fill_header);
+
+void qeth_tx_csum(struct sk_buff *skb)
+{
+	int tlen;
+	if (skb->protocol == htons(ETH_P_IP)) {
+		tlen = ntohs(ip_hdr(skb)->tot_len) - (ip_hdr(skb)->ihl << 2);
+		switch (ip_hdr(skb)->protocol) {
+		case IPPROTO_TCP:
+			tcp_hdr(skb)->check = 0;
+			tcp_hdr(skb)->check = csum_tcpudp_magic(
+				ip_hdr(skb)->saddr, ip_hdr(skb)->daddr,
+				tlen, ip_hdr(skb)->protocol,
+				skb_checksum(skb, skb_transport_offset(skb),
+					tlen, 0));
+			break;
+		case IPPROTO_UDP:
+			udp_hdr(skb)->check = 0;
+			udp_hdr(skb)->check = csum_tcpudp_magic(
+				ip_hdr(skb)->saddr, ip_hdr(skb)->daddr,
+				tlen, ip_hdr(skb)->protocol,
+				skb_checksum(skb, skb_transport_offset(skb),
+					tlen, 0));
+			break;
+		}
+	} else if (skb->protocol == htons(ETH_P_IPV6)) {
+		switch (ipv6_hdr(skb)->nexthdr) {
+		case IPPROTO_TCP:
+			tcp_hdr(skb)->check = 0;
+			tcp_hdr(skb)->check = csum_ipv6_magic(
+				&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
+				ipv6_hdr(skb)->payload_len,
+				ipv6_hdr(skb)->nexthdr,
+				skb_checksum(skb, skb_transport_offset(skb),
+					ipv6_hdr(skb)->payload_len, 0));
+			break;
+		case IPPROTO_UDP:
+			udp_hdr(skb)->check = 0;
+			udp_hdr(skb)->check = csum_ipv6_magic(
+				&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
+				ipv6_hdr(skb)->payload_len,
+				ipv6_hdr(skb)->nexthdr,
+				skb_checksum(skb, skb_transport_offset(skb),
+					ipv6_hdr(skb)->payload_len, 0));
+			break;
+		}
+	}
+}
+EXPORT_SYMBOL_GPL(qeth_tx_csum);