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path: root/drivers/s390/net/ctcm_main.c
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Diffstat (limited to 'drivers/s390/net/ctcm_main.c')
-rw-r--r--drivers/s390/net/ctcm_main.c514
1 files changed, 238 insertions, 276 deletions
diff --git a/drivers/s390/net/ctcm_main.c b/drivers/s390/net/ctcm_main.c
index 6b13c1c1beb8..126a3ebb8ab2 100644
--- a/drivers/s390/net/ctcm_main.c
+++ b/drivers/s390/net/ctcm_main.c
@@ -84,20 +84,19 @@ void ctcm_unpack_skb(struct channel *ch, struct sk_buff *pskb)
84 skb_pull(pskb, LL_HEADER_LENGTH); 84 skb_pull(pskb, LL_HEADER_LENGTH);
85 if ((ch->protocol == CTCM_PROTO_S390) && 85 if ((ch->protocol == CTCM_PROTO_S390) &&
86 (header->type != ETH_P_IP)) { 86 (header->type != ETH_P_IP)) {
87
88 if (!(ch->logflags & LOG_FLAG_ILLEGALPKT)) { 87 if (!(ch->logflags & LOG_FLAG_ILLEGALPKT)) {
88 ch->logflags |= LOG_FLAG_ILLEGALPKT;
89 /* 89 /*
90 * Check packet type only if we stick strictly 90 * Check packet type only if we stick strictly
91 * to S/390's protocol of OS390. This only 91 * to S/390's protocol of OS390. This only
92 * supports IP. Otherwise allow any packet 92 * supports IP. Otherwise allow any packet
93 * type. 93 * type.
94 */ 94 */
95 ctcm_pr_warn("%s Illegal packet type 0x%04x " 95 CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR,
96 "received, dropping\n", 96 "%s(%s): Illegal packet type 0x%04x"
97 dev->name, header->type); 97 " - dropping",
98 ch->logflags |= LOG_FLAG_ILLEGALPKT; 98 CTCM_FUNTAIL, dev->name, header->type);
99 } 99 }
100
101 priv->stats.rx_dropped++; 100 priv->stats.rx_dropped++;
102 priv->stats.rx_frame_errors++; 101 priv->stats.rx_frame_errors++;
103 return; 102 return;
@@ -105,11 +104,11 @@ void ctcm_unpack_skb(struct channel *ch, struct sk_buff *pskb)
105 pskb->protocol = ntohs(header->type); 104 pskb->protocol = ntohs(header->type);
106 if (header->length <= LL_HEADER_LENGTH) { 105 if (header->length <= LL_HEADER_LENGTH) {
107 if (!(ch->logflags & LOG_FLAG_ILLEGALSIZE)) { 106 if (!(ch->logflags & LOG_FLAG_ILLEGALSIZE)) {
108 ctcm_pr_warn( 107 CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR,
109 "%s Illegal packet size %d " 108 "%s(%s): Illegal packet size %d(%d,%d)"
110 "received (MTU=%d blocklen=%d), " 109 "- dropping",
111 "dropping\n", dev->name, header->length, 110 CTCM_FUNTAIL, dev->name,
112 dev->mtu, len); 111 header->length, dev->mtu, len);
113 ch->logflags |= LOG_FLAG_ILLEGALSIZE; 112 ch->logflags |= LOG_FLAG_ILLEGALSIZE;
114 } 113 }
115 114
@@ -122,10 +121,10 @@ void ctcm_unpack_skb(struct channel *ch, struct sk_buff *pskb)
122 if ((header->length > skb_tailroom(pskb)) || 121 if ((header->length > skb_tailroom(pskb)) ||
123 (header->length > len)) { 122 (header->length > len)) {
124 if (!(ch->logflags & LOG_FLAG_OVERRUN)) { 123 if (!(ch->logflags & LOG_FLAG_OVERRUN)) {
125 ctcm_pr_warn( 124 CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR,
126 "%s Illegal packet size %d (beyond the" 125 "%s(%s): Packet size %d (overrun)"
127 " end of received data), dropping\n", 126 " - dropping", CTCM_FUNTAIL,
128 dev->name, header->length); 127 dev->name, header->length);
129 ch->logflags |= LOG_FLAG_OVERRUN; 128 ch->logflags |= LOG_FLAG_OVERRUN;
130 } 129 }
131 130
@@ -139,9 +138,9 @@ void ctcm_unpack_skb(struct channel *ch, struct sk_buff *pskb)
139 skb = dev_alloc_skb(pskb->len); 138 skb = dev_alloc_skb(pskb->len);
140 if (!skb) { 139 if (!skb) {
141 if (!(ch->logflags & LOG_FLAG_NOMEM)) { 140 if (!(ch->logflags & LOG_FLAG_NOMEM)) {
142 ctcm_pr_warn( 141 CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR,
143 "%s Out of memory in ctcm_unpack_skb\n", 142 "%s(%s): MEMORY allocation error",
144 dev->name); 143 CTCM_FUNTAIL, dev->name);
145 ch->logflags |= LOG_FLAG_NOMEM; 144 ch->logflags |= LOG_FLAG_NOMEM;
146 } 145 }
147 priv->stats.rx_dropped++; 146 priv->stats.rx_dropped++;
@@ -184,7 +183,7 @@ void ctcm_unpack_skb(struct channel *ch, struct sk_buff *pskb)
184 */ 183 */
185static void channel_free(struct channel *ch) 184static void channel_free(struct channel *ch)
186{ 185{
187 CTCM_DBF_TEXT(TRACE, 2, __FUNCTION__); 186 CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO, "%s(%s)", CTCM_FUNTAIL, ch->id);
188 ch->flags &= ~CHANNEL_FLAGS_INUSE; 187 ch->flags &= ~CHANNEL_FLAGS_INUSE;
189 fsm_newstate(ch->fsm, CTC_STATE_IDLE); 188 fsm_newstate(ch->fsm, CTC_STATE_IDLE);
190} 189}
@@ -251,19 +250,12 @@ static struct channel *channel_get(enum channel_types type,
251{ 250{
252 struct channel *ch = channels; 251 struct channel *ch = channels;
253 252
254 if (do_debug) {
255 char buf[64];
256 sprintf(buf, "%s(%d, %s, %d)\n",
257 CTCM_FUNTAIL, type, id, direction);
258 CTCM_DBF_TEXT(TRACE, CTC_DBF_INFO, buf);
259 }
260 while (ch && (strncmp(ch->id, id, CTCM_ID_SIZE) || (ch->type != type))) 253 while (ch && (strncmp(ch->id, id, CTCM_ID_SIZE) || (ch->type != type)))
261 ch = ch->next; 254 ch = ch->next;
262 if (!ch) { 255 if (!ch) {
263 char buf[64]; 256 CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR,
264 sprintf(buf, "%s(%d, %s, %d) not found in channel list\n", 257 "%s(%d, %s, %d) not found in channel list\n",
265 CTCM_FUNTAIL, type, id, direction); 258 CTCM_FUNTAIL, type, id, direction);
266 CTCM_DBF_TEXT(ERROR, CTC_DBF_ERROR, buf);
267 } else { 259 } else {
268 if (ch->flags & CHANNEL_FLAGS_INUSE) 260 if (ch->flags & CHANNEL_FLAGS_INUSE)
269 ch = NULL; 261 ch = NULL;
@@ -283,8 +275,9 @@ static long ctcm_check_irb_error(struct ccw_device *cdev, struct irb *irb)
283 if (!IS_ERR(irb)) 275 if (!IS_ERR(irb))
284 return 0; 276 return 0;
285 277
286 CTCM_DBF_TEXT_(ERROR, CTC_DBF_WARN, "irb error %ld on device %s\n", 278 CTCM_DBF_TEXT_(ERROR, CTC_DBF_WARN,
287 PTR_ERR(irb), cdev->dev.bus_id); 279 "irb error %ld on device %s\n",
280 PTR_ERR(irb), cdev->dev.bus_id);
288 281
289 switch (PTR_ERR(irb)) { 282 switch (PTR_ERR(irb)) {
290 case -EIO: 283 case -EIO:
@@ -307,58 +300,85 @@ static long ctcm_check_irb_error(struct ccw_device *cdev, struct irb *irb)
307 * ch The channel, the sense code belongs to. 300 * ch The channel, the sense code belongs to.
308 * sense The sense code to inspect. 301 * sense The sense code to inspect.
309 */ 302 */
310static inline void ccw_unit_check(struct channel *ch, unsigned char sense) 303static inline void ccw_unit_check(struct channel *ch, __u8 sense)
311{ 304{
312 CTCM_DBF_TEXT(TRACE, 5, __FUNCTION__); 305 CTCM_DBF_TEXT_(TRACE, CTC_DBF_DEBUG,
306 "%s(%s): %02x",
307 CTCM_FUNTAIL, ch->id, sense);
308
313 if (sense & SNS0_INTERVENTION_REQ) { 309 if (sense & SNS0_INTERVENTION_REQ) {
314 if (sense & 0x01) { 310 if (sense & 0x01) {
315 ctcm_pr_debug("%s: Interface disc. or Sel. reset " 311 if (ch->sense_rc != 0x01) {
316 "(remote)\n", ch->id); 312 ctcm_pr_debug("%s: Interface disc. or Sel. "
313 "reset (remote)\n", ch->id);
314 ch->sense_rc = 0x01;
315 }
317 fsm_event(ch->fsm, CTC_EVENT_UC_RCRESET, ch); 316 fsm_event(ch->fsm, CTC_EVENT_UC_RCRESET, ch);
318 } else { 317 } else {
319 ctcm_pr_debug("%s: System reset (remote)\n", ch->id); 318 if (ch->sense_rc != SNS0_INTERVENTION_REQ) {
319 ctcm_pr_debug("%s: System reset (remote)\n",
320 ch->id);
321 ch->sense_rc = SNS0_INTERVENTION_REQ;
322 }
320 fsm_event(ch->fsm, CTC_EVENT_UC_RSRESET, ch); 323 fsm_event(ch->fsm, CTC_EVENT_UC_RSRESET, ch);
321 } 324 }
322 } else if (sense & SNS0_EQUIPMENT_CHECK) { 325 } else if (sense & SNS0_EQUIPMENT_CHECK) {
323 if (sense & SNS0_BUS_OUT_CHECK) { 326 if (sense & SNS0_BUS_OUT_CHECK) {
324 ctcm_pr_warn("%s: Hardware malfunction (remote)\n", 327 if (ch->sense_rc != SNS0_BUS_OUT_CHECK) {
325 ch->id); 328 CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN,
329 "%s(%s): remote HW error %02x",
330 CTCM_FUNTAIL, ch->id, sense);
331 ch->sense_rc = SNS0_BUS_OUT_CHECK;
332 }
326 fsm_event(ch->fsm, CTC_EVENT_UC_HWFAIL, ch); 333 fsm_event(ch->fsm, CTC_EVENT_UC_HWFAIL, ch);
327 } else { 334 } else {
328 ctcm_pr_warn("%s: Read-data parity error (remote)\n", 335 if (ch->sense_rc != SNS0_EQUIPMENT_CHECK) {
329 ch->id); 336 CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN,
337 "%s(%s): remote read parity error %02x",
338 CTCM_FUNTAIL, ch->id, sense);
339 ch->sense_rc = SNS0_EQUIPMENT_CHECK;
340 }
330 fsm_event(ch->fsm, CTC_EVENT_UC_RXPARITY, ch); 341 fsm_event(ch->fsm, CTC_EVENT_UC_RXPARITY, ch);
331 } 342 }
332 } else if (sense & SNS0_BUS_OUT_CHECK) { 343 } else if (sense & SNS0_BUS_OUT_CHECK) {
333 if (sense & 0x04) { 344 if (ch->sense_rc != SNS0_BUS_OUT_CHECK) {
334 ctcm_pr_warn("%s: Data-streaming timeout)\n", ch->id); 345 CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN,
346 "%s(%s): BUS OUT error %02x",
347 CTCM_FUNTAIL, ch->id, sense);
348 ch->sense_rc = SNS0_BUS_OUT_CHECK;
349 }
350 if (sense & 0x04) /* data-streaming timeout */
335 fsm_event(ch->fsm, CTC_EVENT_UC_TXTIMEOUT, ch); 351 fsm_event(ch->fsm, CTC_EVENT_UC_TXTIMEOUT, ch);
336 } else { 352 else /* Data-transfer parity error */
337 ctcm_pr_warn("%s: Data-transfer parity error\n",
338 ch->id);
339 fsm_event(ch->fsm, CTC_EVENT_UC_TXPARITY, ch); 353 fsm_event(ch->fsm, CTC_EVENT_UC_TXPARITY, ch);
340 }
341 } else if (sense & SNS0_CMD_REJECT) { 354 } else if (sense & SNS0_CMD_REJECT) {
342 ctcm_pr_warn("%s: Command reject\n", ch->id); 355 if (ch->sense_rc != SNS0_CMD_REJECT) {
356 CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN,
357 "%s(%s): Command rejected",
358 CTCM_FUNTAIL, ch->id);
359 ch->sense_rc = SNS0_CMD_REJECT;
360 }
343 } else if (sense == 0) { 361 } else if (sense == 0) {
344 ctcm_pr_debug("%s: Unit check ZERO\n", ch->id); 362 CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN,
363 "%s(%s): Unit check ZERO",
364 CTCM_FUNTAIL, ch->id);
345 fsm_event(ch->fsm, CTC_EVENT_UC_ZERO, ch); 365 fsm_event(ch->fsm, CTC_EVENT_UC_ZERO, ch);
346 } else { 366 } else {
347 ctcm_pr_warn("%s: Unit Check with sense code: %02x\n", 367 CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN,
348 ch->id, sense); 368 "%s(%s): Unit check code %02x unknown",
369 CTCM_FUNTAIL, ch->id, sense);
349 fsm_event(ch->fsm, CTC_EVENT_UC_UNKNOWN, ch); 370 fsm_event(ch->fsm, CTC_EVENT_UC_UNKNOWN, ch);
350 } 371 }
351} 372}
352 373
353int ctcm_ch_alloc_buffer(struct channel *ch) 374int ctcm_ch_alloc_buffer(struct channel *ch)
354{ 375{
355 CTCM_DBF_TEXT(TRACE, 5, __FUNCTION__);
356
357 clear_normalized_cda(&ch->ccw[1]); 376 clear_normalized_cda(&ch->ccw[1]);
358 ch->trans_skb = __dev_alloc_skb(ch->max_bufsize, GFP_ATOMIC | GFP_DMA); 377 ch->trans_skb = __dev_alloc_skb(ch->max_bufsize, GFP_ATOMIC | GFP_DMA);
359 if (ch->trans_skb == NULL) { 378 if (ch->trans_skb == NULL) {
360 ctcm_pr_warn("%s: Couldn't alloc %s trans_skb\n", 379 CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR,
361 ch->id, 380 "%s(%s): %s trans_skb allocation error",
381 CTCM_FUNTAIL, ch->id,
362 (CHANNEL_DIRECTION(ch->flags) == READ) ? "RX" : "TX"); 382 (CHANNEL_DIRECTION(ch->flags) == READ) ? "RX" : "TX");
363 return -ENOMEM; 383 return -ENOMEM;
364 } 384 }
@@ -367,9 +387,9 @@ int ctcm_ch_alloc_buffer(struct channel *ch)
367 if (set_normalized_cda(&ch->ccw[1], ch->trans_skb->data)) { 387 if (set_normalized_cda(&ch->ccw[1], ch->trans_skb->data)) {
368 dev_kfree_skb(ch->trans_skb); 388 dev_kfree_skb(ch->trans_skb);
369 ch->trans_skb = NULL; 389 ch->trans_skb = NULL;
370 ctcm_pr_warn("%s: set_normalized_cda for %s " 390 CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR,
371 "trans_skb failed, dropping packets\n", 391 "%s(%s): %s set norm_cda failed",
372 ch->id, 392 CTCM_FUNTAIL, ch->id,
373 (CHANNEL_DIRECTION(ch->flags) == READ) ? "RX" : "TX"); 393 (CHANNEL_DIRECTION(ch->flags) == READ) ? "RX" : "TX");
374 return -ENOMEM; 394 return -ENOMEM;
375 } 395 }
@@ -516,7 +536,7 @@ static int ctcm_transmit_skb(struct channel *ch, struct sk_buff *skb)
516 atomic_dec(&skb->users); 536 atomic_dec(&skb->users);
517 skb_pull(skb, LL_HEADER_LENGTH + 2); 537 skb_pull(skb, LL_HEADER_LENGTH + 2);
518 ctcm_clear_busy(ch->netdev); 538 ctcm_clear_busy(ch->netdev);
519 return -EBUSY; 539 return -ENOMEM;
520 } 540 }
521 541
522 skb_reset_tail_pointer(ch->trans_skb); 542 skb_reset_tail_pointer(ch->trans_skb);
@@ -570,15 +590,12 @@ static void ctcmpc_send_sweep_req(struct channel *rch)
570 struct th_sweep *header; 590 struct th_sweep *header;
571 struct sk_buff *sweep_skb; 591 struct sk_buff *sweep_skb;
572 struct channel *ch; 592 struct channel *ch;
573 int rc = 0; 593 /* int rc = 0; */
574 594
575 priv = dev->priv; 595 priv = dev->priv;
576 grp = priv->mpcg; 596 grp = priv->mpcg;
577 ch = priv->channel[WRITE]; 597 ch = priv->channel[WRITE];
578 598
579 if (do_debug)
580 MPC_DBF_DEV_NAME(TRACE, dev, ch->id);
581
582 /* sweep processing is not complete until response and request */ 599 /* sweep processing is not complete until response and request */
583 /* has completed for all read channels in group */ 600 /* has completed for all read channels in group */
584 if (grp->in_sweep == 0) { 601 if (grp->in_sweep == 0) {
@@ -590,17 +607,16 @@ static void ctcmpc_send_sweep_req(struct channel *rch)
590 sweep_skb = __dev_alloc_skb(MPC_BUFSIZE_DEFAULT, GFP_ATOMIC|GFP_DMA); 607 sweep_skb = __dev_alloc_skb(MPC_BUFSIZE_DEFAULT, GFP_ATOMIC|GFP_DMA);
591 608
592 if (sweep_skb == NULL) { 609 if (sweep_skb == NULL) {
593 printk(KERN_INFO "Couldn't alloc sweep_skb\n"); 610 /* rc = -ENOMEM; */
594 rc = -ENOMEM; 611 goto nomem;
595 goto done;
596 } 612 }
597 613
598 header = kmalloc(TH_SWEEP_LENGTH, gfp_type()); 614 header = kmalloc(TH_SWEEP_LENGTH, gfp_type());
599 615
600 if (!header) { 616 if (!header) {
601 dev_kfree_skb_any(sweep_skb); 617 dev_kfree_skb_any(sweep_skb);
602 rc = -ENOMEM; 618 /* rc = -ENOMEM; */
603 goto done; 619 goto nomem;
604 } 620 }
605 621
606 header->th.th_seg = 0x00 ; 622 header->th.th_seg = 0x00 ;
@@ -621,12 +637,10 @@ static void ctcmpc_send_sweep_req(struct channel *rch)
621 637
622 return; 638 return;
623 639
624done: 640nomem:
625 if (rc != 0) { 641 grp->in_sweep = 0;
626 grp->in_sweep = 0; 642 ctcm_clear_busy(dev);
627 ctcm_clear_busy(dev); 643 fsm_event(grp->fsm, MPCG_EVENT_INOP, dev);
628 fsm_event(grp->fsm, MPCG_EVENT_INOP, dev);
629 }
630 644
631 return; 645 return;
632} 646}
@@ -648,11 +662,9 @@ static int ctcmpc_transmit_skb(struct channel *ch, struct sk_buff *skb)
648 unsigned long saveflags = 0; /* avoids compiler warning */ 662 unsigned long saveflags = 0; /* avoids compiler warning */
649 __u16 block_len; 663 __u16 block_len;
650 664
651 if (do_debug) 665 CTCM_PR_DEBUG("Enter %s: %s, cp=%i ch=0x%p id=%s state=%s\n",
652 ctcm_pr_debug( 666 __func__, dev->name, smp_processor_id(), ch,
653 "ctcm enter: %s(): %s cp=%i ch=0x%p id=%s state=%s\n", 667 ch->id, fsm_getstate_str(ch->fsm));
654 __FUNCTION__, dev->name, smp_processor_id(), ch,
655 ch->id, fsm_getstate_str(ch->fsm));
656 668
657 if ((fsm_getstate(ch->fsm) != CTC_STATE_TXIDLE) || grp->in_sweep) { 669 if ((fsm_getstate(ch->fsm) != CTC_STATE_TXIDLE) || grp->in_sweep) {
658 spin_lock_irqsave(&ch->collect_lock, saveflags); 670 spin_lock_irqsave(&ch->collect_lock, saveflags);
@@ -660,14 +672,8 @@ static int ctcmpc_transmit_skb(struct channel *ch, struct sk_buff *skb)
660 p_header = kmalloc(PDU_HEADER_LENGTH, gfp_type()); 672 p_header = kmalloc(PDU_HEADER_LENGTH, gfp_type());
661 673
662 if (!p_header) { 674 if (!p_header) {
663 printk(KERN_WARNING "ctcm: OUT OF MEMORY IN %s():"
664 " Data Lost \n", __FUNCTION__);
665
666 atomic_dec(&skb->users);
667 dev_kfree_skb_any(skb);
668 spin_unlock_irqrestore(&ch->collect_lock, saveflags); 675 spin_unlock_irqrestore(&ch->collect_lock, saveflags);
669 fsm_event(priv->mpcg->fsm, MPCG_EVENT_INOP, dev); 676 goto nomem_exit;
670 goto done;
671 } 677 }
672 678
673 p_header->pdu_offset = skb->len; 679 p_header->pdu_offset = skb->len;
@@ -682,13 +688,10 @@ static int ctcmpc_transmit_skb(struct channel *ch, struct sk_buff *skb)
682 memcpy(skb_push(skb, PDU_HEADER_LENGTH), p_header, 688 memcpy(skb_push(skb, PDU_HEADER_LENGTH), p_header,
683 PDU_HEADER_LENGTH); 689 PDU_HEADER_LENGTH);
684 690
685 if (do_debug_data) { 691 CTCM_PR_DEBUG("%s(%s): Put on collect_q - skb len: %04x \n"
686 ctcm_pr_debug("ctcm: %s() Putting on collect_q" 692 "pdu header and data for up to 32 bytes:\n",
687 " - skb len: %04x \n", __FUNCTION__, skb->len); 693 __func__, dev->name, skb->len);
688 ctcm_pr_debug("ctcm: %s() pdu header and data" 694 CTCM_D3_DUMP((char *)skb->data, min_t(int, 32, skb->len));
689 " for up to 32 bytes\n", __FUNCTION__);
690 ctcmpc_dump32((char *)skb->data, skb->len);
691 }
692 695
693 skb_queue_tail(&ch->collect_queue, skb); 696 skb_queue_tail(&ch->collect_queue, skb);
694 ch->collect_len += skb->len; 697 ch->collect_len += skb->len;
@@ -713,12 +716,7 @@ static int ctcmpc_transmit_skb(struct channel *ch, struct sk_buff *skb)
713 if (hi) { 716 if (hi) {
714 nskb = __dev_alloc_skb(skb->len, GFP_ATOMIC | GFP_DMA); 717 nskb = __dev_alloc_skb(skb->len, GFP_ATOMIC | GFP_DMA);
715 if (!nskb) { 718 if (!nskb) {
716 printk(KERN_WARNING "ctcm: %s() OUT OF MEMORY" 719 goto nomem_exit;
717 "- Data Lost \n", __FUNCTION__);
718 atomic_dec(&skb->users);
719 dev_kfree_skb_any(skb);
720 fsm_event(priv->mpcg->fsm, MPCG_EVENT_INOP, dev);
721 goto done;
722 } else { 720 } else {
723 memcpy(skb_put(nskb, skb->len), skb->data, skb->len); 721 memcpy(skb_put(nskb, skb->len), skb->data, skb->len);
724 atomic_inc(&nskb->users); 722 atomic_inc(&nskb->users);
@@ -730,15 +728,8 @@ static int ctcmpc_transmit_skb(struct channel *ch, struct sk_buff *skb)
730 728
731 p_header = kmalloc(PDU_HEADER_LENGTH, gfp_type()); 729 p_header = kmalloc(PDU_HEADER_LENGTH, gfp_type());
732 730
733 if (!p_header) { 731 if (!p_header)
734 printk(KERN_WARNING "ctcm: %s() OUT OF MEMORY" 732 goto nomem_exit;
735 ": Data Lost \n", __FUNCTION__);
736
737 atomic_dec(&skb->users);
738 dev_kfree_skb_any(skb);
739 fsm_event(priv->mpcg->fsm, MPCG_EVENT_INOP, dev);
740 goto done;
741 }
742 733
743 p_header->pdu_offset = skb->len; 734 p_header->pdu_offset = skb->len;
744 p_header->pdu_proto = 0x01; 735 p_header->pdu_proto = 0x01;
@@ -768,15 +759,8 @@ static int ctcmpc_transmit_skb(struct channel *ch, struct sk_buff *skb)
768 ch->prof.txlen += skb->len - PDU_HEADER_LENGTH; 759 ch->prof.txlen += skb->len - PDU_HEADER_LENGTH;
769 760
770 header = kmalloc(TH_HEADER_LENGTH, gfp_type()); 761 header = kmalloc(TH_HEADER_LENGTH, gfp_type());
771 762 if (!header)
772 if (!header) { 763 goto nomem_exit;
773 printk(KERN_WARNING "ctcm: %s() OUT OF MEMORY: Data Lost \n",
774 __FUNCTION__);
775 atomic_dec(&skb->users);
776 dev_kfree_skb_any(skb);
777 fsm_event(priv->mpcg->fsm, MPCG_EVENT_INOP, dev);
778 goto done;
779 }
780 764
781 header->th_seg = 0x00; 765 header->th_seg = 0x00;
782 header->th_ch_flag = TH_HAS_PDU; /* Normal data */ 766 header->th_ch_flag = TH_HAS_PDU; /* Normal data */
@@ -785,41 +769,31 @@ static int ctcmpc_transmit_skb(struct channel *ch, struct sk_buff *skb)
785 ch->th_seq_num++; 769 ch->th_seq_num++;
786 header->th_seq_num = ch->th_seq_num; 770 header->th_seq_num = ch->th_seq_num;
787 771
788 if (do_debug_data) 772 CTCM_PR_DBGDATA("%s(%s) ToVTAM_th_seq= %08x\n" ,
789 ctcm_pr_debug("ctcm: %s() ToVTAM_th_seq= %08x\n" , 773 __func__, dev->name, ch->th_seq_num);
790 __FUNCTION__, ch->th_seq_num);
791 774
792 /* put the TH on the packet */ 775 /* put the TH on the packet */
793 memcpy(skb_push(skb, TH_HEADER_LENGTH), header, TH_HEADER_LENGTH); 776 memcpy(skb_push(skb, TH_HEADER_LENGTH), header, TH_HEADER_LENGTH);
794 777
795 kfree(header); 778 kfree(header);
796 779
797 if (do_debug_data) { 780 CTCM_PR_DBGDATA("%s(%s): skb len: %04x\n - pdu header and data for "
798 ctcm_pr_debug("ctcm: %s(): skb len: %04x \n", 781 "up to 32 bytes sent to vtam:\n",
799 __FUNCTION__, skb->len); 782 __func__, dev->name, skb->len);
800 ctcm_pr_debug("ctcm: %s(): pdu header and data for up to 32 " 783 CTCM_D3_DUMP((char *)skb->data, min_t(int, 32, skb->len));
801 "bytes sent to vtam\n", __FUNCTION__);
802 ctcmpc_dump32((char *)skb->data, skb->len);
803 }
804 784
805 ch->ccw[4].count = skb->len; 785 ch->ccw[4].count = skb->len;
806 if (set_normalized_cda(&ch->ccw[4], skb->data)) { 786 if (set_normalized_cda(&ch->ccw[4], skb->data)) {
807 /* 787 /*
808 * idal allocation failed, try via copying to 788 * idal allocation failed, try via copying to trans_skb.
809 * trans_skb. trans_skb usually has a pre-allocated 789 * trans_skb usually has a pre-allocated idal.
810 * idal.
811 */ 790 */
812 if (ctcm_checkalloc_buffer(ch)) { 791 if (ctcm_checkalloc_buffer(ch)) {
813 /* 792 /*
814 * Remove our header. It gets added 793 * Remove our header.
815 * again on retransmit. 794 * It gets added again on retransmit.
816 */ 795 */
817 atomic_dec(&skb->users); 796 goto nomem_exit;
818 dev_kfree_skb_any(skb);
819 printk(KERN_WARNING "ctcm: %s()OUT OF MEMORY:"
820 " Data Lost \n", __FUNCTION__);
821 fsm_event(priv->mpcg->fsm, MPCG_EVENT_INOP, dev);
822 goto done;
823 } 797 }
824 798
825 skb_reset_tail_pointer(ch->trans_skb); 799 skb_reset_tail_pointer(ch->trans_skb);
@@ -829,14 +803,11 @@ static int ctcmpc_transmit_skb(struct channel *ch, struct sk_buff *skb)
829 atomic_dec(&skb->users); 803 atomic_dec(&skb->users);
830 dev_kfree_skb_irq(skb); 804 dev_kfree_skb_irq(skb);
831 ccw_idx = 0; 805 ccw_idx = 0;
832 if (do_debug_data) { 806 CTCM_PR_DBGDATA("%s(%s): trans_skb len: %04x\n"
833 ctcm_pr_debug("ctcm: %s() TRANS skb len: %d \n", 807 "up to 32 bytes sent to vtam:\n",
834 __FUNCTION__, ch->trans_skb->len); 808 __func__, dev->name, ch->trans_skb->len);
835 ctcm_pr_debug("ctcm: %s up to 32 bytes of data" 809 CTCM_D3_DUMP((char *)ch->trans_skb->data,
836 " sent to vtam\n", __FUNCTION__); 810 min_t(int, 32, ch->trans_skb->len));
837 ctcmpc_dump32((char *)ch->trans_skb->data,
838 ch->trans_skb->len);
839 }
840 } else { 811 } else {
841 skb_queue_tail(&ch->io_queue, skb); 812 skb_queue_tail(&ch->io_queue, skb);
842 ccw_idx = 3; 813 ccw_idx = 3;
@@ -865,13 +836,21 @@ static int ctcmpc_transmit_skb(struct channel *ch, struct sk_buff *skb)
865 priv->stats.tx_packets++; 836 priv->stats.tx_packets++;
866 priv->stats.tx_bytes += skb->len - TH_HEADER_LENGTH; 837 priv->stats.tx_bytes += skb->len - TH_HEADER_LENGTH;
867 } 838 }
868 if (ch->th_seq_num > 0xf0000000) /* Chose 4Billion at random. */ 839 if (ch->th_seq_num > 0xf0000000) /* Chose at random. */
869 ctcmpc_send_sweep_req(ch); 840 ctcmpc_send_sweep_req(ch);
870 841
842 goto done;
843nomem_exit:
844 CTCM_DBF_TEXT_(MPC_ERROR, CTC_DBF_CRIT,
845 "%s(%s): MEMORY allocation ERROR\n",
846 CTCM_FUNTAIL, ch->id);
847 rc = -ENOMEM;
848 atomic_dec(&skb->users);
849 dev_kfree_skb_any(skb);
850 fsm_event(priv->mpcg->fsm, MPCG_EVENT_INOP, dev);
871done: 851done:
872 if (do_debug) 852 CTCM_PR_DEBUG("Exit %s(%s)\n", __func__, dev->name);
873 ctcm_pr_debug("ctcm exit: %s %s()\n", dev->name, __FUNCTION__); 853 return rc;
874 return 0;
875} 854}
876 855
877/** 856/**
@@ -888,20 +867,19 @@ done:
888/* first merge version - leaving both functions separated */ 867/* first merge version - leaving both functions separated */
889static int ctcm_tx(struct sk_buff *skb, struct net_device *dev) 868static int ctcm_tx(struct sk_buff *skb, struct net_device *dev)
890{ 869{
891 int rc = 0; 870 struct ctcm_priv *priv = dev->priv;
892 struct ctcm_priv *priv;
893
894 CTCM_DBF_TEXT(TRACE, 5, __FUNCTION__);
895 priv = dev->priv;
896 871
897 if (skb == NULL) { 872 if (skb == NULL) {
898 ctcm_pr_warn("%s: NULL sk_buff passed\n", dev->name); 873 CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR,
874 "%s(%s): NULL sk_buff passed",
875 CTCM_FUNTAIL, dev->name);
899 priv->stats.tx_dropped++; 876 priv->stats.tx_dropped++;
900 return 0; 877 return 0;
901 } 878 }
902 if (skb_headroom(skb) < (LL_HEADER_LENGTH + 2)) { 879 if (skb_headroom(skb) < (LL_HEADER_LENGTH + 2)) {
903 ctcm_pr_warn("%s: Got sk_buff with head room < %ld bytes\n", 880 CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR,
904 dev->name, LL_HEADER_LENGTH + 2); 881 "%s(%s): Got sk_buff with head room < %ld bytes",
882 CTCM_FUNTAIL, dev->name, LL_HEADER_LENGTH + 2);
905 dev_kfree_skb(skb); 883 dev_kfree_skb(skb);
906 priv->stats.tx_dropped++; 884 priv->stats.tx_dropped++;
907 return 0; 885 return 0;
@@ -925,51 +903,43 @@ static int ctcm_tx(struct sk_buff *skb, struct net_device *dev)
925 903
926 dev->trans_start = jiffies; 904 dev->trans_start = jiffies;
927 if (ctcm_transmit_skb(priv->channel[WRITE], skb) != 0) 905 if (ctcm_transmit_skb(priv->channel[WRITE], skb) != 0)
928 rc = 1; 906 return 1;
929 return rc; 907 return 0;
930} 908}
931 909
932/* unmerged MPC variant of ctcm_tx */ 910/* unmerged MPC variant of ctcm_tx */
933static int ctcmpc_tx(struct sk_buff *skb, struct net_device *dev) 911static int ctcmpc_tx(struct sk_buff *skb, struct net_device *dev)
934{ 912{
935 int len = 0; 913 int len = 0;
936 struct ctcm_priv *priv = NULL; 914 struct ctcm_priv *priv = dev->priv;
937 struct mpc_group *grp = NULL; 915 struct mpc_group *grp = priv->mpcg;
938 struct sk_buff *newskb = NULL; 916 struct sk_buff *newskb = NULL;
939 917
940 if (do_debug)
941 ctcm_pr_debug("ctcmpc enter: %s(): skb:%0lx\n",
942 __FUNCTION__, (unsigned long)skb);
943
944 CTCM_DBF_TEXT_(MPC_TRACE, CTC_DBF_DEBUG,
945 "ctcmpc enter: %s(): skb:%0lx\n",
946 __FUNCTION__, (unsigned long)skb);
947
948 priv = dev->priv;
949 grp = priv->mpcg;
950 /* 918 /*
951 * Some sanity checks ... 919 * Some sanity checks ...
952 */ 920 */
953 if (skb == NULL) { 921 if (skb == NULL) {
954 ctcm_pr_warn("ctcmpc: %s: NULL sk_buff passed\n", dev->name); 922 CTCM_DBF_TEXT_(MPC_ERROR, CTC_DBF_ERROR,
923 "%s(%s): NULL sk_buff passed",
924 CTCM_FUNTAIL, dev->name);
955 priv->stats.tx_dropped++; 925 priv->stats.tx_dropped++;
956 goto done; 926 goto done;
957 } 927 }
958 if (skb_headroom(skb) < (TH_HEADER_LENGTH + PDU_HEADER_LENGTH)) { 928 if (skb_headroom(skb) < (TH_HEADER_LENGTH + PDU_HEADER_LENGTH)) {
959 CTCM_DBF_TEXT_(MPC_TRACE, CTC_DBF_WARN, 929 CTCM_DBF_TEXT_(MPC_TRACE, CTC_DBF_ERROR,
960 "%s: Got sk_buff with head room < %ld bytes\n", 930 "%s(%s): Got sk_buff with head room < %ld bytes",
961 dev->name, TH_HEADER_LENGTH + PDU_HEADER_LENGTH); 931 CTCM_FUNTAIL, dev->name,
932 TH_HEADER_LENGTH + PDU_HEADER_LENGTH);
962 933
963 if (do_debug_data) 934 CTCM_D3_DUMP((char *)skb->data, min_t(int, 32, skb->len));
964 ctcmpc_dump32((char *)skb->data, skb->len);
965 935
966 len = skb->len + TH_HEADER_LENGTH + PDU_HEADER_LENGTH; 936 len = skb->len + TH_HEADER_LENGTH + PDU_HEADER_LENGTH;
967 newskb = __dev_alloc_skb(len, gfp_type() | GFP_DMA); 937 newskb = __dev_alloc_skb(len, gfp_type() | GFP_DMA);
968 938
969 if (!newskb) { 939 if (!newskb) {
970 printk(KERN_WARNING "ctcmpc: %s() OUT OF MEMORY-" 940 CTCM_DBF_TEXT_(MPC_TRACE, CTC_DBF_ERROR,
971 "Data Lost\n", 941 "%s: %s: __dev_alloc_skb failed",
972 __FUNCTION__); 942 __func__, dev->name);
973 943
974 dev_kfree_skb_any(skb); 944 dev_kfree_skb_any(skb);
975 priv->stats.tx_dropped++; 945 priv->stats.tx_dropped++;
@@ -993,9 +963,9 @@ static int ctcmpc_tx(struct sk_buff *skb, struct net_device *dev)
993 if ((fsm_getstate(priv->fsm) != DEV_STATE_RUNNING) || 963 if ((fsm_getstate(priv->fsm) != DEV_STATE_RUNNING) ||
994 (fsm_getstate(grp->fsm) < MPCG_STATE_XID2INITW)) { 964 (fsm_getstate(grp->fsm) < MPCG_STATE_XID2INITW)) {
995 dev_kfree_skb_any(skb); 965 dev_kfree_skb_any(skb);
996 printk(KERN_INFO "ctcmpc: %s() DATA RCVD - MPC GROUP " 966 CTCM_DBF_TEXT_(MPC_ERROR, CTC_DBF_ERROR,
997 "NOT ACTIVE - DROPPED\n", 967 "%s(%s): inactive MPCGROUP - dropped",
998 __FUNCTION__); 968 CTCM_FUNTAIL, dev->name);
999 priv->stats.tx_dropped++; 969 priv->stats.tx_dropped++;
1000 priv->stats.tx_errors++; 970 priv->stats.tx_errors++;
1001 priv->stats.tx_carrier_errors++; 971 priv->stats.tx_carrier_errors++;
@@ -1003,8 +973,9 @@ static int ctcmpc_tx(struct sk_buff *skb, struct net_device *dev)
1003 } 973 }
1004 974
1005 if (ctcm_test_and_set_busy(dev)) { 975 if (ctcm_test_and_set_busy(dev)) {
1006 printk(KERN_WARNING "%s:DEVICE ERR - UNRECOVERABLE DATA LOSS\n", 976 CTCM_DBF_TEXT_(MPC_ERROR, CTC_DBF_ERROR,
1007 __FUNCTION__); 977 "%s(%s): device busy - dropped",
978 CTCM_FUNTAIL, dev->name);
1008 dev_kfree_skb_any(skb); 979 dev_kfree_skb_any(skb);
1009 priv->stats.tx_dropped++; 980 priv->stats.tx_dropped++;
1010 priv->stats.tx_errors++; 981 priv->stats.tx_errors++;
@@ -1015,12 +986,9 @@ static int ctcmpc_tx(struct sk_buff *skb, struct net_device *dev)
1015 986
1016 dev->trans_start = jiffies; 987 dev->trans_start = jiffies;
1017 if (ctcmpc_transmit_skb(priv->channel[WRITE], skb) != 0) { 988 if (ctcmpc_transmit_skb(priv->channel[WRITE], skb) != 0) {
1018 printk(KERN_WARNING "ctcmpc: %s() DEVICE ERROR" 989 CTCM_DBF_TEXT_(MPC_ERROR, CTC_DBF_ERROR,
1019 ": Data Lost \n", 990 "%s(%s): device error - dropped",
1020 __FUNCTION__); 991 CTCM_FUNTAIL, dev->name);
1021 printk(KERN_WARNING "ctcmpc: %s() DEVICE ERROR"
1022 " - UNRECOVERABLE DATA LOSS\n",
1023 __FUNCTION__);
1024 dev_kfree_skb_any(skb); 992 dev_kfree_skb_any(skb);
1025 priv->stats.tx_dropped++; 993 priv->stats.tx_dropped++;
1026 priv->stats.tx_errors++; 994 priv->stats.tx_errors++;
@@ -1054,8 +1022,6 @@ static int ctcm_change_mtu(struct net_device *dev, int new_mtu)
1054 struct ctcm_priv *priv; 1022 struct ctcm_priv *priv;
1055 int max_bufsize; 1023 int max_bufsize;
1056 1024
1057 CTCM_DBF_TEXT(SETUP, CTC_DBF_INFO, __FUNCTION__);
1058
1059 if (new_mtu < 576 || new_mtu > 65527) 1025 if (new_mtu < 576 || new_mtu > 65527)
1060 return -EINVAL; 1026 return -EINVAL;
1061 1027
@@ -1087,30 +1053,13 @@ static struct net_device_stats *ctcm_stats(struct net_device *dev)
1087 return &((struct ctcm_priv *)dev->priv)->stats; 1053 return &((struct ctcm_priv *)dev->priv)->stats;
1088} 1054}
1089 1055
1090
1091static void ctcm_netdev_unregister(struct net_device *dev)
1092{
1093 CTCM_DBF_TEXT(SETUP, CTC_DBF_INFO, __FUNCTION__);
1094 if (!dev)
1095 return;
1096 unregister_netdev(dev);
1097}
1098
1099static int ctcm_netdev_register(struct net_device *dev)
1100{
1101 CTCM_DBF_TEXT(SETUP, CTC_DBF_INFO, __FUNCTION__);
1102 return register_netdev(dev);
1103}
1104
1105static void ctcm_free_netdevice(struct net_device *dev) 1056static void ctcm_free_netdevice(struct net_device *dev)
1106{ 1057{
1107 struct ctcm_priv *priv; 1058 struct ctcm_priv *priv;
1108 struct mpc_group *grp; 1059 struct mpc_group *grp;
1109 1060
1110 CTCM_DBF_TEXT(SETUP, CTC_DBF_INFO, __FUNCTION__); 1061 CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO,
1111 1062 "%s(%s)", CTCM_FUNTAIL, dev->name);
1112 if (!dev)
1113 return;
1114 priv = dev->priv; 1063 priv = dev->priv;
1115 if (priv) { 1064 if (priv) {
1116 grp = priv->mpcg; 1065 grp = priv->mpcg;
@@ -1171,7 +1120,9 @@ static struct net_device *ctcm_init_netdevice(struct ctcm_priv *priv)
1171 dev = alloc_netdev(0, CTC_DEVICE_GENE, ctcm_dev_setup); 1120 dev = alloc_netdev(0, CTC_DEVICE_GENE, ctcm_dev_setup);
1172 1121
1173 if (!dev) { 1122 if (!dev) {
1174 ctcm_pr_err("%s: Out of memory\n", __FUNCTION__); 1123 CTCM_DBF_TEXT_(ERROR, CTC_DBF_CRIT,
1124 "%s: MEMORY allocation ERROR",
1125 CTCM_FUNTAIL);
1175 return NULL; 1126 return NULL;
1176 } 1127 }
1177 dev->priv = priv; 1128 dev->priv = priv;
@@ -1209,6 +1160,7 @@ static struct net_device *ctcm_init_netdevice(struct ctcm_priv *priv)
1209 } 1160 }
1210 1161
1211 CTCMY_DBF_DEV(SETUP, dev, "finished"); 1162 CTCMY_DBF_DEV(SETUP, dev, "finished");
1163
1212 return dev; 1164 return dev;
1213} 1165}
1214 1166
@@ -1226,18 +1178,24 @@ static void ctcm_irq_handler(struct ccw_device *cdev,
1226 struct net_device *dev; 1178 struct net_device *dev;
1227 struct ctcm_priv *priv; 1179 struct ctcm_priv *priv;
1228 struct ccwgroup_device *cgdev; 1180 struct ccwgroup_device *cgdev;
1181 int cstat;
1182 int dstat;
1183
1184 CTCM_DBF_TEXT_(TRACE, CTC_DBF_DEBUG,
1185 "Enter %s(%s)", CTCM_FUNTAIL, &cdev->dev.bus_id);
1229 1186
1230 CTCM_DBF_TEXT(TRACE, CTC_DBF_DEBUG, __FUNCTION__);
1231 if (ctcm_check_irb_error(cdev, irb)) 1187 if (ctcm_check_irb_error(cdev, irb))
1232 return; 1188 return;
1233 1189
1234 cgdev = dev_get_drvdata(&cdev->dev); 1190 cgdev = dev_get_drvdata(&cdev->dev);
1235 1191
1192 cstat = irb->scsw.cmd.cstat;
1193 dstat = irb->scsw.cmd.dstat;
1194
1236 /* Check for unsolicited interrupts. */ 1195 /* Check for unsolicited interrupts. */
1237 if (cgdev == NULL) { 1196 if (cgdev == NULL) {
1238 ctcm_pr_warn("ctcm: Got unsolicited irq: %s c-%02x d-%02x\n", 1197 ctcm_pr_warn("ctcm: Got unsolicited irq: c-%02x d-%02x\n",
1239 cdev->dev.bus_id, irb->scsw.cmd.cstat, 1198 cstat, dstat);
1240 irb->scsw.cmd.dstat);
1241 return; 1199 return;
1242 } 1200 }
1243 1201
@@ -1254,26 +1212,22 @@ static void ctcm_irq_handler(struct ccw_device *cdev,
1254 return; 1212 return;
1255 } 1213 }
1256 1214
1257 dev = (struct net_device *)(ch->netdev); 1215 dev = ch->netdev;
1258 if (dev == NULL) { 1216 if (dev == NULL) {
1259 ctcm_pr_crit("ctcm: %s dev=NULL bus_id=%s, ch=0x%p\n", 1217 ctcm_pr_crit("ctcm: %s dev=NULL bus_id=%s, ch=0x%p\n",
1260 __FUNCTION__, cdev->dev.bus_id, ch); 1218 __func__, cdev->dev.bus_id, ch);
1261 return; 1219 return;
1262 } 1220 }
1263 1221
1264 if (do_debug) 1222 CTCM_DBF_TEXT_(TRACE, CTC_DBF_DEBUG,
1265 ctcm_pr_debug("%s: interrupt for device: %s " 1223 "%s(%s): int. for %s: cstat=%02x dstat=%02x",
1266 "received c-%02x d-%02x\n", 1224 CTCM_FUNTAIL, dev->name, ch->id, cstat, dstat);
1267 dev->name,
1268 ch->id,
1269 irb->scsw.cmd.cstat,
1270 irb->scsw.cmd.dstat);
1271 1225
1272 /* Copy interruption response block. */ 1226 /* Copy interruption response block. */
1273 memcpy(ch->irb, irb, sizeof(struct irb)); 1227 memcpy(ch->irb, irb, sizeof(struct irb));
1274 1228
1275 /* Check for good subchannel return code, otherwise error message */
1276 if (irb->scsw.cmd.cstat) { 1229 if (irb->scsw.cmd.cstat) {
1230 /* Check for good subchannel return code, otherwise error message */
1277 fsm_event(ch->fsm, CTC_EVENT_SC_UNKNOWN, ch); 1231 fsm_event(ch->fsm, CTC_EVENT_SC_UNKNOWN, ch);
1278 ctcm_pr_warn("%s: subchannel check for dev: %s - %02x %02x\n", 1232 ctcm_pr_warn("%s: subchannel check for dev: %s - %02x %02x\n",
1279 dev->name, ch->id, irb->scsw.cmd.cstat, 1233 dev->name, ch->id, irb->scsw.cmd.cstat,
@@ -1283,6 +1237,11 @@ static void ctcm_irq_handler(struct ccw_device *cdev,
1283 1237
1284 /* Check the reason-code of a unit check */ 1238 /* Check the reason-code of a unit check */
1285 if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) { 1239 if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) {
1240 if ((irb->ecw[0] & ch->sense_rc) == 0)
1241 /* print it only once */
1242 CTCM_DBF_TEXT_(TRACE, CTC_DBF_INFO,
1243 "%s(%s): sense=%02x, ds=%02x",
1244 CTCM_FUNTAIL, ch->id, irb->ecw[0], dstat);
1286 ccw_unit_check(ch, irb->ecw[0]); 1245 ccw_unit_check(ch, irb->ecw[0]);
1287 return; 1246 return;
1288 } 1247 }
@@ -1320,14 +1279,18 @@ static int ctcm_probe_device(struct ccwgroup_device *cgdev)
1320 struct ctcm_priv *priv; 1279 struct ctcm_priv *priv;
1321 int rc; 1280 int rc;
1322 1281
1323 CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO, "%s %p", __FUNCTION__, cgdev); 1282 CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO,
1283 "%s %p",
1284 __func__, cgdev);
1324 1285
1325 if (!get_device(&cgdev->dev)) 1286 if (!get_device(&cgdev->dev))
1326 return -ENODEV; 1287 return -ENODEV;
1327 1288
1328 priv = kzalloc(sizeof(struct ctcm_priv), GFP_KERNEL); 1289 priv = kzalloc(sizeof(struct ctcm_priv), GFP_KERNEL);
1329 if (!priv) { 1290 if (!priv) {
1330 ctcm_pr_err("%s: Out of memory\n", __FUNCTION__); 1291 CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR,
1292 "%s: memory allocation failure",
1293 CTCM_FUNTAIL);
1331 put_device(&cgdev->dev); 1294 put_device(&cgdev->dev);
1332 return -ENOMEM; 1295 return -ENOMEM;
1333 } 1296 }
@@ -1364,10 +1327,13 @@ static int add_channel(struct ccw_device *cdev, enum channel_types type,
1364 int ccw_num; 1327 int ccw_num;
1365 int rc = 0; 1328 int rc = 0;
1366 1329
1367 CTCM_DBF_TEXT(TRACE, 2, __FUNCTION__); 1330 CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO,
1331 "%s(%s), type %d, proto %d",
1332 __func__, cdev->dev.bus_id, type, priv->protocol);
1333
1368 ch = kzalloc(sizeof(struct channel), GFP_KERNEL); 1334 ch = kzalloc(sizeof(struct channel), GFP_KERNEL);
1369 if (ch == NULL) 1335 if (ch == NULL)
1370 goto nomem_return; 1336 return -ENOMEM;
1371 1337
1372 ch->protocol = priv->protocol; 1338 ch->protocol = priv->protocol;
1373 if (IS_MPC(priv)) { 1339 if (IS_MPC(priv)) {
@@ -1478,7 +1444,7 @@ static int add_channel(struct ccw_device *cdev, enum channel_types type,
1478 if (*c && (!strncmp((*c)->id, ch->id, CTCM_ID_SIZE))) { 1444 if (*c && (!strncmp((*c)->id, ch->id, CTCM_ID_SIZE))) {
1479 CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO, 1445 CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO,
1480 "%s (%s) already in list, using old entry", 1446 "%s (%s) already in list, using old entry",
1481 __FUNCTION__, (*c)->id); 1447 __func__, (*c)->id);
1482 1448
1483 goto free_return; 1449 goto free_return;
1484 } 1450 }
@@ -1498,11 +1464,10 @@ static int add_channel(struct ccw_device *cdev, enum channel_types type,
1498 return 0; 1464 return 0;
1499 1465
1500nomem_return: 1466nomem_return:
1501 ctcm_pr_warn("ctcm: Out of memory in %s\n", __FUNCTION__);
1502 rc = -ENOMEM; 1467 rc = -ENOMEM;
1503 1468
1504free_return: /* note that all channel pointers are 0 or valid */ 1469free_return: /* note that all channel pointers are 0 or valid */
1505 kfree(ch->ccw); /* TODO: check that again */ 1470 kfree(ch->ccw);
1506 kfree(ch->discontact_th); 1471 kfree(ch->discontact_th);
1507 kfree_fsm(ch->fsm); 1472 kfree_fsm(ch->fsm);
1508 kfree(ch->irb); 1473 kfree(ch->irb);
@@ -1540,48 +1505,48 @@ static int ctcm_new_device(struct ccwgroup_device *cgdev)
1540 enum channel_types type; 1505 enum channel_types type;
1541 struct ctcm_priv *priv; 1506 struct ctcm_priv *priv;
1542 struct net_device *dev; 1507 struct net_device *dev;
1508 struct ccw_device *cdev0;
1509 struct ccw_device *cdev1;
1543 int ret; 1510 int ret;
1544 1511
1545 CTCM_DBF_TEXT(SETUP, CTC_DBF_INFO, __FUNCTION__);
1546
1547 priv = dev_get_drvdata(&cgdev->dev); 1512 priv = dev_get_drvdata(&cgdev->dev);
1548 if (!priv) 1513 if (!priv)
1549 return -ENODEV; 1514 return -ENODEV;
1550 1515
1551 type = get_channel_type(&cgdev->cdev[0]->id); 1516 cdev0 = cgdev->cdev[0];
1517 cdev1 = cgdev->cdev[1];
1518
1519 type = get_channel_type(&cdev0->id);
1552 1520
1553 snprintf(read_id, CTCM_ID_SIZE, "ch-%s", cgdev->cdev[0]->dev.bus_id); 1521 snprintf(read_id, CTCM_ID_SIZE, "ch-%s", cdev0->dev.bus_id);
1554 snprintf(write_id, CTCM_ID_SIZE, "ch-%s", cgdev->cdev[1]->dev.bus_id); 1522 snprintf(write_id, CTCM_ID_SIZE, "ch-%s", cdev1->dev.bus_id);
1555 1523
1556 ret = add_channel(cgdev->cdev[0], type, priv); 1524 ret = add_channel(cdev0, type, priv);
1557 if (ret) 1525 if (ret)
1558 return ret; 1526 return ret;
1559 ret = add_channel(cgdev->cdev[1], type, priv); 1527 ret = add_channel(cdev1, type, priv);
1560 if (ret) 1528 if (ret)
1561 return ret; 1529 return ret;
1562 1530
1563 ret = ccw_device_set_online(cgdev->cdev[0]); 1531 ret = ccw_device_set_online(cdev0);
1564 if (ret != 0) { 1532 if (ret != 0) {
1565 CTCM_DBF_TEXT(SETUP, CTC_DBF_WARN, 1533 /* may be ok to fail now - can be done later */
1566 "ccw_device_set_online (cdev[0]) failed "); 1534 CTCM_DBF_TEXT_(TRACE, CTC_DBF_NOTICE,
1567 ctcm_pr_warn("ccw_device_set_online (cdev[0]) failed " 1535 "%s(%s) set_online rc=%d",
1568 "with ret = %d\n", ret); 1536 CTCM_FUNTAIL, read_id, ret);
1569 } 1537 }
1570 1538
1571 ret = ccw_device_set_online(cgdev->cdev[1]); 1539 ret = ccw_device_set_online(cdev1);
1572 if (ret != 0) { 1540 if (ret != 0) {
1573 CTCM_DBF_TEXT(SETUP, CTC_DBF_WARN, 1541 /* may be ok to fail now - can be done later */
1574 "ccw_device_set_online (cdev[1]) failed "); 1542 CTCM_DBF_TEXT_(TRACE, CTC_DBF_NOTICE,
1575 ctcm_pr_warn("ccw_device_set_online (cdev[1]) failed " 1543 "%s(%s) set_online rc=%d",
1576 "with ret = %d\n", ret); 1544 CTCM_FUNTAIL, write_id, ret);
1577 } 1545 }
1578 1546
1579 dev = ctcm_init_netdevice(priv); 1547 dev = ctcm_init_netdevice(priv);
1580 1548 if (dev == NULL)
1581 if (dev == NULL) { 1549 goto out;
1582 ctcm_pr_warn("ctcm_init_netdevice failed\n");
1583 goto out;
1584 }
1585 1550
1586 for (direction = READ; direction <= WRITE; direction++) { 1551 for (direction = READ; direction <= WRITE; direction++) {
1587 priv->channel[direction] = 1552 priv->channel[direction] =
@@ -1590,8 +1555,7 @@ static int ctcm_new_device(struct ccwgroup_device *cgdev)
1590 if (priv->channel[direction] == NULL) { 1555 if (priv->channel[direction] == NULL) {
1591 if (direction == WRITE) 1556 if (direction == WRITE)
1592 channel_free(priv->channel[READ]); 1557 channel_free(priv->channel[READ]);
1593 ctcm_free_netdevice(dev); 1558 goto out_dev;
1594 goto out;
1595 } 1559 }
1596 priv->channel[direction]->netdev = dev; 1560 priv->channel[direction]->netdev = dev;
1597 priv->channel[direction]->protocol = priv->protocol; 1561 priv->channel[direction]->protocol = priv->protocol;
@@ -1600,26 +1564,24 @@ static int ctcm_new_device(struct ccwgroup_device *cgdev)
1600 /* sysfs magic */ 1564 /* sysfs magic */
1601 SET_NETDEV_DEV(dev, &cgdev->dev); 1565 SET_NETDEV_DEV(dev, &cgdev->dev);
1602 1566
1603 if (ctcm_netdev_register(dev) != 0) { 1567 if (register_netdev(dev))
1604 ctcm_free_netdevice(dev); 1568 goto out_dev;
1605 goto out;
1606 }
1607 1569
1608 if (ctcm_add_attributes(&cgdev->dev)) { 1570 if (ctcm_add_attributes(&cgdev->dev)) {
1609 ctcm_netdev_unregister(dev); 1571 unregister_netdev(dev);
1610/* dev->priv = NULL; why that ???? */ 1572 goto out_dev;
1611 ctcm_free_netdevice(dev);
1612 goto out;
1613 } 1573 }
1614 1574
1615 strlcpy(priv->fsm->name, dev->name, sizeof(priv->fsm->name)); 1575 strlcpy(priv->fsm->name, dev->name, sizeof(priv->fsm->name));
1616 1576
1617 CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO, 1577 CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO,
1618 "setup(%s) ok : r/w = %s / %s, proto : %d", 1578 "setup(%s) OK : r/w = %s/%s, protocol : %d", dev->name,
1619 dev->name, priv->channel[READ]->id, 1579 priv->channel[READ]->id,
1620 priv->channel[WRITE]->id, priv->protocol); 1580 priv->channel[WRITE]->id, priv->protocol);
1621 1581
1622 return 0; 1582 return 0;
1583out_dev:
1584 ctcm_free_netdevice(dev);
1623out: 1585out:
1624 ccw_device_set_offline(cgdev->cdev[1]); 1586 ccw_device_set_offline(cgdev->cdev[1]);
1625 ccw_device_set_offline(cgdev->cdev[0]); 1587 ccw_device_set_offline(cgdev->cdev[0]);
@@ -1658,8 +1620,7 @@ static int ctcm_shutdown_device(struct ccwgroup_device *cgdev)
1658 channel_free(priv->channel[WRITE]); 1620 channel_free(priv->channel[WRITE]);
1659 1621
1660 if (dev) { 1622 if (dev) {
1661 ctcm_netdev_unregister(dev); 1623 unregister_netdev(dev);
1662/* dev->priv = NULL; why that ??? */
1663 ctcm_free_netdevice(dev); 1624 ctcm_free_netdevice(dev);
1664 } 1625 }
1665 1626
@@ -1682,13 +1643,16 @@ static int ctcm_shutdown_device(struct ccwgroup_device *cgdev)
1682 1643
1683static void ctcm_remove_device(struct ccwgroup_device *cgdev) 1644static void ctcm_remove_device(struct ccwgroup_device *cgdev)
1684{ 1645{
1685 struct ctcm_priv *priv; 1646 struct ctcm_priv *priv = dev_get_drvdata(&cgdev->dev);
1686 1647
1687 CTCM_DBF_TEXT(SETUP, CTC_DBF_ERROR, __FUNCTION__); 1648 BUG_ON(priv == NULL);
1649
1650 CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO,
1651 "removing device %s, r/w = %s/%s, proto : %d",
1652 priv->channel[READ]->netdev->name,
1653 priv->channel[READ]->id, priv->channel[WRITE]->id,
1654 priv->protocol);
1688 1655
1689 priv = dev_get_drvdata(&cgdev->dev);
1690 if (!priv)
1691 return;
1692 if (cgdev->state == CCWGROUP_ONLINE) 1656 if (cgdev->state == CCWGROUP_ONLINE)
1693 ctcm_shutdown_device(cgdev); 1657 ctcm_shutdown_device(cgdev);
1694 ctcm_remove_files(&cgdev->dev); 1658 ctcm_remove_files(&cgdev->dev);
@@ -1748,8 +1712,6 @@ static int __init ctcm_init(void)
1748 1712
1749 ret = ctcm_register_dbf_views(); 1713 ret = ctcm_register_dbf_views();
1750 if (ret) { 1714 if (ret) {
1751 ctcm_pr_crit("ctcm_init failed with ctcm_register_dbf_views "
1752 "rc = %d\n", ret);
1753 return ret; 1715 return ret;
1754 } 1716 }
1755 ret = register_cu3088_discipline(&ctcm_group_driver); 1717 ret = register_cu3088_discipline(&ctcm_group_driver);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-26 04:01:55 -0500