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path: root/drivers/s390/net/qeth_eddp.c
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Diffstat (limited to 'drivers/s390/net/qeth_eddp.c')
-rw-r--r--drivers/s390/net/qeth_eddp.c40
1 files changed, 20 insertions, 20 deletions
diff --git a/drivers/s390/net/qeth_eddp.c b/drivers/s390/net/qeth_eddp.c
index 45aa4a962daf..f94f1f25eec6 100644
--- a/drivers/s390/net/qeth_eddp.c
+++ b/drivers/s390/net/qeth_eddp.c
@@ -1,6 +1,6 @@
1/* 1/*
2 * 2 *
3 * linux/drivers/s390/net/qeth_eddp.c ($Revision: 1.12 $) 3 * linux/drivers/s390/net/qeth_eddp.c ($Revision: 1.13 $)
4 * 4 *
5 * Enhanced Device Driver Packing (EDDP) support for the qeth driver. 5 * Enhanced Device Driver Packing (EDDP) support for the qeth driver.
6 * 6 *
@@ -8,7 +8,7 @@
8 * 8 *
9 * Author(s): Thomas Spatzier <tspat@de.ibm.com> 9 * Author(s): Thomas Spatzier <tspat@de.ibm.com>
10 * 10 *
11 * $Revision: 1.12 $ $Date: 2005/04/01 21:40:40 $ 11 * $Revision: 1.13 $ $Date: 2005/05/04 20:19:18 $
12 * 12 *
13 */ 13 */
14#include <linux/config.h> 14#include <linux/config.h>
@@ -85,7 +85,7 @@ void
85qeth_eddp_buf_release_contexts(struct qeth_qdio_out_buffer *buf) 85qeth_eddp_buf_release_contexts(struct qeth_qdio_out_buffer *buf)
86{ 86{
87 struct qeth_eddp_context_reference *ref; 87 struct qeth_eddp_context_reference *ref;
88 88
89 QETH_DBF_TEXT(trace, 6, "eddprctx"); 89 QETH_DBF_TEXT(trace, 6, "eddprctx");
90 while (!list_empty(&buf->ctx_list)){ 90 while (!list_empty(&buf->ctx_list)){
91 ref = list_entry(buf->ctx_list.next, 91 ref = list_entry(buf->ctx_list.next,
@@ -139,7 +139,7 @@ qeth_eddp_fill_buffer(struct qeth_qdio_out_q *queue,
139 "buffer!\n"); 139 "buffer!\n");
140 goto out; 140 goto out;
141 } 141 }
142 } 142 }
143 /* check if the whole next skb fits into current buffer */ 143 /* check if the whole next skb fits into current buffer */
144 if ((QETH_MAX_BUFFER_ELEMENTS(queue->card) - 144 if ((QETH_MAX_BUFFER_ELEMENTS(queue->card) -
145 buf->next_element_to_fill) 145 buf->next_element_to_fill)
@@ -152,7 +152,7 @@ qeth_eddp_fill_buffer(struct qeth_qdio_out_q *queue,
152 * and increment ctx's refcnt */ 152 * and increment ctx's refcnt */
153 must_refcnt = 1; 153 must_refcnt = 1;
154 continue; 154 continue;
155 } 155 }
156 if (must_refcnt){ 156 if (must_refcnt){
157 must_refcnt = 0; 157 must_refcnt = 0;
158 if (qeth_eddp_buf_ref_context(buf, ctx)){ 158 if (qeth_eddp_buf_ref_context(buf, ctx)){
@@ -204,27 +204,27 @@ out:
204 204
205static inline void 205static inline void
206qeth_eddp_create_segment_hdrs(struct qeth_eddp_context *ctx, 206qeth_eddp_create_segment_hdrs(struct qeth_eddp_context *ctx,
207 struct qeth_eddp_data *eddp) 207 struct qeth_eddp_data *eddp, int data_len)
208{ 208{
209 u8 *page; 209 u8 *page;
210 int page_remainder; 210 int page_remainder;
211 int page_offset; 211 int page_offset;
212 int hdr_len; 212 int pkt_len;
213 struct qeth_eddp_element *element; 213 struct qeth_eddp_element *element;
214 214
215 QETH_DBF_TEXT(trace, 5, "eddpcrsh"); 215 QETH_DBF_TEXT(trace, 5, "eddpcrsh");
216 page = ctx->pages[ctx->offset >> PAGE_SHIFT]; 216 page = ctx->pages[ctx->offset >> PAGE_SHIFT];
217 page_offset = ctx->offset % PAGE_SIZE; 217 page_offset = ctx->offset % PAGE_SIZE;
218 element = &ctx->elements[ctx->num_elements]; 218 element = &ctx->elements[ctx->num_elements];
219 hdr_len = eddp->nhl + eddp->thl; 219 pkt_len = eddp->nhl + eddp->thl + data_len;
220 /* FIXME: layer2 and VLAN !!! */ 220 /* FIXME: layer2 and VLAN !!! */
221 if (eddp->qh.hdr.l2.id == QETH_HEADER_TYPE_LAYER2) 221 if (eddp->qh.hdr.l2.id == QETH_HEADER_TYPE_LAYER2)
222 hdr_len += ETH_HLEN; 222 pkt_len += ETH_HLEN;
223 if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q)) 223 if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q))
224 hdr_len += VLAN_HLEN; 224 pkt_len += VLAN_HLEN;
225 /* does complete header fit in current page ? */ 225 /* does complete packet fit in current page ? */
226 page_remainder = PAGE_SIZE - page_offset; 226 page_remainder = PAGE_SIZE - page_offset;
227 if (page_remainder < (sizeof(struct qeth_hdr) + hdr_len)){ 227 if (page_remainder < (sizeof(struct qeth_hdr) + pkt_len)){
228 /* no -> go to start of next page */ 228 /* no -> go to start of next page */
229 ctx->offset += page_remainder; 229 ctx->offset += page_remainder;
230 page = ctx->pages[ctx->offset >> PAGE_SHIFT]; 230 page = ctx->pages[ctx->offset >> PAGE_SHIFT];
@@ -270,7 +270,7 @@ qeth_eddp_copy_data_tcp(char *dst, struct qeth_eddp_data *eddp, int len,
270 int left_in_frag; 270 int left_in_frag;
271 int copy_len; 271 int copy_len;
272 u8 *src; 272 u8 *src;
273 273
274 QETH_DBF_TEXT(trace, 5, "eddpcdtc"); 274 QETH_DBF_TEXT(trace, 5, "eddpcdtc");
275 if (skb_shinfo(eddp->skb)->nr_frags == 0) { 275 if (skb_shinfo(eddp->skb)->nr_frags == 0) {
276 memcpy(dst, eddp->skb->data + eddp->skb_offset, len); 276 memcpy(dst, eddp->skb->data + eddp->skb_offset, len);
@@ -281,7 +281,7 @@ qeth_eddp_copy_data_tcp(char *dst, struct qeth_eddp_data *eddp, int len,
281 while (len > 0) { 281 while (len > 0) {
282 if (eddp->frag < 0) { 282 if (eddp->frag < 0) {
283 /* we're in skb->data */ 283 /* we're in skb->data */
284 left_in_frag = qeth_get_skb_data_len(eddp->skb) 284 left_in_frag = (eddp->skb->len - eddp->skb->data_len)
285 - eddp->skb_offset; 285 - eddp->skb_offset;
286 src = eddp->skb->data + eddp->skb_offset; 286 src = eddp->skb->data + eddp->skb_offset;
287 } else { 287 } else {
@@ -413,7 +413,7 @@ __qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
413 struct tcphdr *tcph; 413 struct tcphdr *tcph;
414 int data_len; 414 int data_len;
415 u32 hcsum; 415 u32 hcsum;
416 416
417 QETH_DBF_TEXT(trace, 5, "eddpftcp"); 417 QETH_DBF_TEXT(trace, 5, "eddpftcp");
418 eddp->skb_offset = sizeof(struct qeth_hdr) + eddp->nhl + eddp->thl; 418 eddp->skb_offset = sizeof(struct qeth_hdr) + eddp->nhl + eddp->thl;
419 tcph = eddp->skb->h.th; 419 tcph = eddp->skb->h.th;
@@ -453,7 +453,7 @@ __qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
453 else 453 else
454 hcsum = qeth_eddp_check_tcp6_hdr(eddp, data_len); 454 hcsum = qeth_eddp_check_tcp6_hdr(eddp, data_len);
455 /* fill the next segment into the context */ 455 /* fill the next segment into the context */
456 qeth_eddp_create_segment_hdrs(ctx, eddp); 456 qeth_eddp_create_segment_hdrs(ctx, eddp, data_len);
457 qeth_eddp_create_segment_data_tcp(ctx, eddp, data_len, hcsum); 457 qeth_eddp_create_segment_data_tcp(ctx, eddp, data_len, hcsum);
458 if (eddp->skb_offset >= eddp->skb->len) 458 if (eddp->skb_offset >= eddp->skb->len)
459 break; 459 break;
@@ -463,13 +463,13 @@ __qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
463 eddp->th.tcp.h.seq += data_len; 463 eddp->th.tcp.h.seq += data_len;
464 } 464 }
465} 465}
466 466
467static inline int 467static inline int
468qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx, 468qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
469 struct sk_buff *skb, struct qeth_hdr *qhdr) 469 struct sk_buff *skb, struct qeth_hdr *qhdr)
470{ 470{
471 struct qeth_eddp_data *eddp = NULL; 471 struct qeth_eddp_data *eddp = NULL;
472 472
473 QETH_DBF_TEXT(trace, 5, "eddpficx"); 473 QETH_DBF_TEXT(trace, 5, "eddpficx");
474 /* create our segmentation headers and copy original headers */ 474 /* create our segmentation headers and copy original headers */
475 if (skb->protocol == ETH_P_IP) 475 if (skb->protocol == ETH_P_IP)
@@ -509,7 +509,7 @@ qeth_eddp_calc_num_pages(struct qeth_eddp_context *ctx, struct sk_buff *skb,
509 int hdr_len) 509 int hdr_len)
510{ 510{
511 int skbs_per_page; 511 int skbs_per_page;
512 512
513 QETH_DBF_TEXT(trace, 5, "eddpcanp"); 513 QETH_DBF_TEXT(trace, 5, "eddpcanp");
514 /* can we put multiple skbs in one page? */ 514 /* can we put multiple skbs in one page? */
515 skbs_per_page = PAGE_SIZE / (skb_shinfo(skb)->tso_size + hdr_len); 515 skbs_per_page = PAGE_SIZE / (skb_shinfo(skb)->tso_size + hdr_len);
@@ -589,7 +589,7 @@ qeth_eddp_create_context_tcp(struct qeth_card *card, struct sk_buff *skb,
589 struct qeth_hdr *qhdr) 589 struct qeth_hdr *qhdr)
590{ 590{
591 struct qeth_eddp_context *ctx = NULL; 591 struct qeth_eddp_context *ctx = NULL;
592 592
593 QETH_DBF_TEXT(trace, 5, "creddpct"); 593 QETH_DBF_TEXT(trace, 5, "creddpct");
594 if (skb->protocol == ETH_P_IP) 594 if (skb->protocol == ETH_P_IP)
595 ctx = qeth_eddp_create_context_generic(card, skb, 595 ctx = qeth_eddp_create_context_generic(card, skb,