cxgb3 - tighten checks on TID values
[linux-2.6.git] / drivers / net / cxgb3 / cxgb3_offload.c
1 /*
2  * Copyright (c) 2006-2007 Chelsio, Inc. All rights reserved.
3  *
4  * This software is available to you under a choice of one of two
5  * licenses.  You may choose to be licensed under the terms of the GNU
6  * General Public License (GPL) Version 2, available from the file
7  * COPYING in the main directory of this source tree, or the
8  * OpenIB.org BSD license below:
9  *
10  *     Redistribution and use in source and binary forms, with or
11  *     without modification, are permitted provided that the following
12  *     conditions are met:
13  *
14  *      - Redistributions of source code must retain the above
15  *        copyright notice, this list of conditions and the following
16  *        disclaimer.
17  *
18  *      - Redistributions in binary form must reproduce the above
19  *        copyright notice, this list of conditions and the following
20  *        disclaimer in the documentation and/or other materials
21  *        provided with the distribution.
22  *
23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30  * SOFTWARE.
31  */
32
33 #include <linux/list.h>
34 #include <net/neighbour.h>
35 #include <linux/notifier.h>
36 #include <asm/atomic.h>
37 #include <linux/proc_fs.h>
38 #include <linux/if_vlan.h>
39 #include <net/netevent.h>
40 #include <linux/highmem.h>
41 #include <linux/vmalloc.h>
42
43 #include "common.h"
44 #include "regs.h"
45 #include "cxgb3_ioctl.h"
46 #include "cxgb3_ctl_defs.h"
47 #include "cxgb3_defs.h"
48 #include "l2t.h"
49 #include "firmware_exports.h"
50 #include "cxgb3_offload.h"
51
52 static LIST_HEAD(client_list);
53 static LIST_HEAD(ofld_dev_list);
54 static DEFINE_MUTEX(cxgb3_db_lock);
55
56 static DEFINE_RWLOCK(adapter_list_lock);
57 static LIST_HEAD(adapter_list);
58
59 static const unsigned int MAX_ATIDS = 64 * 1024;
60 static const unsigned int ATID_BASE = 0x10000;
61
62 static inline int offload_activated(struct t3cdev *tdev)
63 {
64         const struct adapter *adapter = tdev2adap(tdev);
65
66         return (test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map));
67 }
68
69 /**
70  *      cxgb3_register_client - register an offload client
71  *      @client: the client
72  *
73  *      Add the client to the client list,
74  *      and call backs the client for each activated offload device
75  */
76 void cxgb3_register_client(struct cxgb3_client *client)
77 {
78         struct t3cdev *tdev;
79
80         mutex_lock(&cxgb3_db_lock);
81         list_add_tail(&client->client_list, &client_list);
82
83         if (client->add) {
84                 list_for_each_entry(tdev, &ofld_dev_list, ofld_dev_list) {
85                         if (offload_activated(tdev))
86                                 client->add(tdev);
87                 }
88         }
89         mutex_unlock(&cxgb3_db_lock);
90 }
91
92 EXPORT_SYMBOL(cxgb3_register_client);
93
94 /**
95  *      cxgb3_unregister_client - unregister an offload client
96  *      @client: the client
97  *
98  *      Remove the client to the client list,
99  *      and call backs the client for each activated offload device.
100  */
101 void cxgb3_unregister_client(struct cxgb3_client *client)
102 {
103         struct t3cdev *tdev;
104
105         mutex_lock(&cxgb3_db_lock);
106         list_del(&client->client_list);
107
108         if (client->remove) {
109                 list_for_each_entry(tdev, &ofld_dev_list, ofld_dev_list) {
110                         if (offload_activated(tdev))
111                                 client->remove(tdev);
112                 }
113         }
114         mutex_unlock(&cxgb3_db_lock);
115 }
116
117 EXPORT_SYMBOL(cxgb3_unregister_client);
118
119 /**
120  *      cxgb3_add_clients - activate registered clients for an offload device
121  *      @tdev: the offload device
122  *
123  *      Call backs all registered clients once a offload device is activated
124  */
125 void cxgb3_add_clients(struct t3cdev *tdev)
126 {
127         struct cxgb3_client *client;
128
129         mutex_lock(&cxgb3_db_lock);
130         list_for_each_entry(client, &client_list, client_list) {
131                 if (client->add)
132                         client->add(tdev);
133         }
134         mutex_unlock(&cxgb3_db_lock);
135 }
136
137 /**
138  *      cxgb3_remove_clients - deactivates registered clients
139  *                             for an offload device
140  *      @tdev: the offload device
141  *
142  *      Call backs all registered clients once a offload device is deactivated
143  */
144 void cxgb3_remove_clients(struct t3cdev *tdev)
145 {
146         struct cxgb3_client *client;
147
148         mutex_lock(&cxgb3_db_lock);
149         list_for_each_entry(client, &client_list, client_list) {
150                 if (client->remove)
151                         client->remove(tdev);
152         }
153         mutex_unlock(&cxgb3_db_lock);
154 }
155
156 static struct net_device *get_iff_from_mac(struct adapter *adapter,
157                                            const unsigned char *mac,
158                                            unsigned int vlan)
159 {
160         int i;
161
162         for_each_port(adapter, i) {
163                 struct vlan_group *grp;
164                 struct net_device *dev = adapter->port[i];
165                 const struct port_info *p = netdev_priv(dev);
166
167                 if (!memcmp(dev->dev_addr, mac, ETH_ALEN)) {
168                         if (vlan && vlan != VLAN_VID_MASK) {
169                                 grp = p->vlan_grp;
170                                 dev = NULL;
171                                 if (grp)
172                                         dev = vlan_group_get_device(grp, vlan);
173                         } else
174                                 while (dev->master)
175                                         dev = dev->master;
176                         return dev;
177                 }
178         }
179         return NULL;
180 }
181
182 static int cxgb_ulp_iscsi_ctl(struct adapter *adapter, unsigned int req,
183                               void *data)
184 {
185         int ret = 0;
186         struct ulp_iscsi_info *uiip = data;
187
188         switch (req) {
189         case ULP_ISCSI_GET_PARAMS:
190                 uiip->pdev = adapter->pdev;
191                 uiip->llimit = t3_read_reg(adapter, A_ULPRX_ISCSI_LLIMIT);
192                 uiip->ulimit = t3_read_reg(adapter, A_ULPRX_ISCSI_ULIMIT);
193                 uiip->tagmask = t3_read_reg(adapter, A_ULPRX_ISCSI_TAGMASK);
194                 /*
195                  * On tx, the iscsi pdu has to be <= tx page size and has to
196                  * fit into the Tx PM FIFO.
197                  */
198                 uiip->max_txsz = min(adapter->params.tp.tx_pg_size,
199                                      t3_read_reg(adapter, A_PM1_TX_CFG) >> 17);
200                 /* on rx, the iscsi pdu has to be < rx page size and the
201                    whole pdu + cpl headers has to fit into one sge buffer */
202                 uiip->max_rxsz = min_t(unsigned int,
203                                        adapter->params.tp.rx_pg_size,
204                                        (adapter->sge.qs[0].fl[1].buf_size -
205                                         sizeof(struct cpl_rx_data) * 2 -
206                                         sizeof(struct cpl_rx_data_ddp)));
207                 break;
208         case ULP_ISCSI_SET_PARAMS:
209                 t3_write_reg(adapter, A_ULPRX_ISCSI_TAGMASK, uiip->tagmask);
210                 break;
211         default:
212                 ret = -EOPNOTSUPP;
213         }
214         return ret;
215 }
216
217 /* Response queue used for RDMA events. */
218 #define ASYNC_NOTIF_RSPQ 0
219
220 static int cxgb_rdma_ctl(struct adapter *adapter, unsigned int req, void *data)
221 {
222         int ret = 0;
223
224         switch (req) {
225         case RDMA_GET_PARAMS:{
226                 struct rdma_info *req = data;
227                 struct pci_dev *pdev = adapter->pdev;
228
229                 req->udbell_physbase = pci_resource_start(pdev, 2);
230                 req->udbell_len = pci_resource_len(pdev, 2);
231                 req->tpt_base =
232                         t3_read_reg(adapter, A_ULPTX_TPT_LLIMIT);
233                 req->tpt_top = t3_read_reg(adapter, A_ULPTX_TPT_ULIMIT);
234                 req->pbl_base =
235                         t3_read_reg(adapter, A_ULPTX_PBL_LLIMIT);
236                 req->pbl_top = t3_read_reg(adapter, A_ULPTX_PBL_ULIMIT);
237                 req->rqt_base = t3_read_reg(adapter, A_ULPRX_RQ_LLIMIT);
238                 req->rqt_top = t3_read_reg(adapter, A_ULPRX_RQ_ULIMIT);
239                 req->kdb_addr = adapter->regs + A_SG_KDOORBELL;
240                 req->pdev = pdev;
241                 break;
242         }
243         case RDMA_CQ_OP:{
244                 unsigned long flags;
245                 struct rdma_cq_op *req = data;
246
247                 /* may be called in any context */
248                 spin_lock_irqsave(&adapter->sge.reg_lock, flags);
249                 ret = t3_sge_cqcntxt_op(adapter, req->id, req->op,
250                                         req->credits);
251                 spin_unlock_irqrestore(&adapter->sge.reg_lock, flags);
252                 break;
253         }
254         case RDMA_GET_MEM:{
255                 struct ch_mem_range *t = data;
256                 struct mc7 *mem;
257
258                 if ((t->addr & 7) || (t->len & 7))
259                         return -EINVAL;
260                 if (t->mem_id == MEM_CM)
261                         mem = &adapter->cm;
262                 else if (t->mem_id == MEM_PMRX)
263                         mem = &adapter->pmrx;
264                 else if (t->mem_id == MEM_PMTX)
265                         mem = &adapter->pmtx;
266                 else
267                         return -EINVAL;
268
269                 ret =
270                         t3_mc7_bd_read(mem, t->addr / 8, t->len / 8,
271                                         (u64 *) t->buf);
272                 if (ret)
273                         return ret;
274                 break;
275         }
276         case RDMA_CQ_SETUP:{
277                 struct rdma_cq_setup *req = data;
278
279                 spin_lock_irq(&adapter->sge.reg_lock);
280                 ret =
281                         t3_sge_init_cqcntxt(adapter, req->id,
282                                         req->base_addr, req->size,
283                                         ASYNC_NOTIF_RSPQ,
284                                         req->ovfl_mode, req->credits,
285                                         req->credit_thres);
286                 spin_unlock_irq(&adapter->sge.reg_lock);
287                 break;
288         }
289         case RDMA_CQ_DISABLE:
290                 spin_lock_irq(&adapter->sge.reg_lock);
291                 ret = t3_sge_disable_cqcntxt(adapter, *(unsigned int *)data);
292                 spin_unlock_irq(&adapter->sge.reg_lock);
293                 break;
294         case RDMA_CTRL_QP_SETUP:{
295                 struct rdma_ctrlqp_setup *req = data;
296
297                 spin_lock_irq(&adapter->sge.reg_lock);
298                 ret = t3_sge_init_ecntxt(adapter, FW_RI_SGEEC_START, 0,
299                                                 SGE_CNTXT_RDMA,
300                                                 ASYNC_NOTIF_RSPQ,
301                                                 req->base_addr, req->size,
302                                                 FW_RI_TID_START, 1, 0);
303                 spin_unlock_irq(&adapter->sge.reg_lock);
304                 break;
305         }
306         default:
307                 ret = -EOPNOTSUPP;
308         }
309         return ret;
310 }
311
312 static int cxgb_offload_ctl(struct t3cdev *tdev, unsigned int req, void *data)
313 {
314         struct adapter *adapter = tdev2adap(tdev);
315         struct tid_range *tid;
316         struct mtutab *mtup;
317         struct iff_mac *iffmacp;
318         struct ddp_params *ddpp;
319         struct adap_ports *ports;
320         struct ofld_page_info *rx_page_info;
321         struct tp_params *tp = &adapter->params.tp;
322         int i;
323
324         switch (req) {
325         case GET_MAX_OUTSTANDING_WR:
326                 *(unsigned int *)data = FW_WR_NUM;
327                 break;
328         case GET_WR_LEN:
329                 *(unsigned int *)data = WR_FLITS;
330                 break;
331         case GET_TX_MAX_CHUNK:
332                 *(unsigned int *)data = 1 << 20;        /* 1MB */
333                 break;
334         case GET_TID_RANGE:
335                 tid = data;
336                 tid->num = t3_mc5_size(&adapter->mc5) -
337                     adapter->params.mc5.nroutes -
338                     adapter->params.mc5.nfilters - adapter->params.mc5.nservers;
339                 tid->base = 0;
340                 break;
341         case GET_STID_RANGE:
342                 tid = data;
343                 tid->num = adapter->params.mc5.nservers;
344                 tid->base = t3_mc5_size(&adapter->mc5) - tid->num -
345                     adapter->params.mc5.nfilters - adapter->params.mc5.nroutes;
346                 break;
347         case GET_L2T_CAPACITY:
348                 *(unsigned int *)data = 2048;
349                 break;
350         case GET_MTUS:
351                 mtup = data;
352                 mtup->size = NMTUS;
353                 mtup->mtus = adapter->params.mtus;
354                 break;
355         case GET_IFF_FROM_MAC:
356                 iffmacp = data;
357                 iffmacp->dev = get_iff_from_mac(adapter, iffmacp->mac_addr,
358                                                 iffmacp->vlan_tag &
359                                                 VLAN_VID_MASK);
360                 break;
361         case GET_DDP_PARAMS:
362                 ddpp = data;
363                 ddpp->llimit = t3_read_reg(adapter, A_ULPRX_TDDP_LLIMIT);
364                 ddpp->ulimit = t3_read_reg(adapter, A_ULPRX_TDDP_ULIMIT);
365                 ddpp->tag_mask = t3_read_reg(adapter, A_ULPRX_TDDP_TAGMASK);
366                 break;
367         case GET_PORTS:
368                 ports = data;
369                 ports->nports = adapter->params.nports;
370                 for_each_port(adapter, i)
371                         ports->lldevs[i] = adapter->port[i];
372                 break;
373         case ULP_ISCSI_GET_PARAMS:
374         case ULP_ISCSI_SET_PARAMS:
375                 if (!offload_running(adapter))
376                         return -EAGAIN;
377                 return cxgb_ulp_iscsi_ctl(adapter, req, data);
378         case RDMA_GET_PARAMS:
379         case RDMA_CQ_OP:
380         case RDMA_CQ_SETUP:
381         case RDMA_CQ_DISABLE:
382         case RDMA_CTRL_QP_SETUP:
383         case RDMA_GET_MEM:
384                 if (!offload_running(adapter))
385                         return -EAGAIN;
386                 return cxgb_rdma_ctl(adapter, req, data);
387         case GET_RX_PAGE_INFO:
388                 rx_page_info = data;
389                 rx_page_info->page_size = tp->rx_pg_size;
390                 rx_page_info->num = tp->rx_num_pgs;
391                 break;
392         default:
393                 return -EOPNOTSUPP;
394         }
395         return 0;
396 }
397
398 /*
399  * Dummy handler for Rx offload packets in case we get an offload packet before
400  * proper processing is setup.  This complains and drops the packet as it isn't
401  * normal to get offload packets at this stage.
402  */
403 static int rx_offload_blackhole(struct t3cdev *dev, struct sk_buff **skbs,
404                                 int n)
405 {
406         CH_ERR(tdev2adap(dev), "%d unexpected offload packets, first data %u\n",
407                n, ntohl(*(__be32 *)skbs[0]->data));
408         while (n--)
409                 dev_kfree_skb_any(skbs[n]);
410         return 0;
411 }
412
413 static void dummy_neigh_update(struct t3cdev *dev, struct neighbour *neigh)
414 {
415 }
416
417 void cxgb3_set_dummy_ops(struct t3cdev *dev)
418 {
419         dev->recv = rx_offload_blackhole;
420         dev->neigh_update = dummy_neigh_update;
421 }
422
423 /*
424  * Free an active-open TID.
425  */
426 void *cxgb3_free_atid(struct t3cdev *tdev, int atid)
427 {
428         struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
429         union active_open_entry *p = atid2entry(t, atid);
430         void *ctx = p->t3c_tid.ctx;
431
432         spin_lock_bh(&t->atid_lock);
433         p->next = t->afree;
434         t->afree = p;
435         t->atids_in_use--;
436         spin_unlock_bh(&t->atid_lock);
437
438         return ctx;
439 }
440
441 EXPORT_SYMBOL(cxgb3_free_atid);
442
443 /*
444  * Free a server TID and return it to the free pool.
445  */
446 void cxgb3_free_stid(struct t3cdev *tdev, int stid)
447 {
448         struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
449         union listen_entry *p = stid2entry(t, stid);
450
451         spin_lock_bh(&t->stid_lock);
452         p->next = t->sfree;
453         t->sfree = p;
454         t->stids_in_use--;
455         spin_unlock_bh(&t->stid_lock);
456 }
457
458 EXPORT_SYMBOL(cxgb3_free_stid);
459
460 void cxgb3_insert_tid(struct t3cdev *tdev, struct cxgb3_client *client,
461                       void *ctx, unsigned int tid)
462 {
463         struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
464
465         t->tid_tab[tid].client = client;
466         t->tid_tab[tid].ctx = ctx;
467         atomic_inc(&t->tids_in_use);
468 }
469
470 EXPORT_SYMBOL(cxgb3_insert_tid);
471
472 /*
473  * Populate a TID_RELEASE WR.  The skb must be already propely sized.
474  */
475 static inline void mk_tid_release(struct sk_buff *skb, unsigned int tid)
476 {
477         struct cpl_tid_release *req;
478
479         skb->priority = CPL_PRIORITY_SETUP;
480         req = (struct cpl_tid_release *)__skb_put(skb, sizeof(*req));
481         req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
482         OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_TID_RELEASE, tid));
483 }
484
485 static void t3_process_tid_release_list(struct work_struct *work)
486 {
487         struct t3c_data *td = container_of(work, struct t3c_data,
488                                            tid_release_task);
489         struct sk_buff *skb;
490         struct t3cdev *tdev = td->dev;
491         
492
493         spin_lock_bh(&td->tid_release_lock);
494         while (td->tid_release_list) {
495                 struct t3c_tid_entry *p = td->tid_release_list;
496
497                 td->tid_release_list = (struct t3c_tid_entry *)p->ctx;
498                 spin_unlock_bh(&td->tid_release_lock);
499
500                 skb = alloc_skb(sizeof(struct cpl_tid_release),
501                                 GFP_KERNEL | __GFP_NOFAIL);
502                 mk_tid_release(skb, p - td->tid_maps.tid_tab);
503                 cxgb3_ofld_send(tdev, skb);
504                 p->ctx = NULL;
505                 spin_lock_bh(&td->tid_release_lock);
506         }
507         spin_unlock_bh(&td->tid_release_lock);
508 }
509
510 /* use ctx as a next pointer in the tid release list */
511 void cxgb3_queue_tid_release(struct t3cdev *tdev, unsigned int tid)
512 {
513         struct t3c_data *td = T3C_DATA(tdev);
514         struct t3c_tid_entry *p = &td->tid_maps.tid_tab[tid];
515
516         spin_lock_bh(&td->tid_release_lock);
517         p->ctx = (void *)td->tid_release_list;
518         p->client = NULL;
519         td->tid_release_list = p;
520         if (!p->ctx)
521                 schedule_work(&td->tid_release_task);
522         spin_unlock_bh(&td->tid_release_lock);
523 }
524
525 EXPORT_SYMBOL(cxgb3_queue_tid_release);
526
527 /*
528  * Remove a tid from the TID table.  A client may defer processing its last
529  * CPL message if it is locked at the time it arrives, and while the message
530  * sits in the client's backlog the TID may be reused for another connection.
531  * To handle this we atomically switch the TID association if it still points
532  * to the original client context.
533  */
534 void cxgb3_remove_tid(struct t3cdev *tdev, void *ctx, unsigned int tid)
535 {
536         struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
537
538         BUG_ON(tid >= t->ntids);
539         if (tdev->type == T3A)
540                 (void)cmpxchg(&t->tid_tab[tid].ctx, ctx, NULL);
541         else {
542                 struct sk_buff *skb;
543
544                 skb = alloc_skb(sizeof(struct cpl_tid_release), GFP_ATOMIC);
545                 if (likely(skb)) {
546                         mk_tid_release(skb, tid);
547                         cxgb3_ofld_send(tdev, skb);
548                         t->tid_tab[tid].ctx = NULL;
549                 } else
550                         cxgb3_queue_tid_release(tdev, tid);
551         }
552         atomic_dec(&t->tids_in_use);
553 }
554
555 EXPORT_SYMBOL(cxgb3_remove_tid);
556
557 int cxgb3_alloc_atid(struct t3cdev *tdev, struct cxgb3_client *client,
558                      void *ctx)
559 {
560         int atid = -1;
561         struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
562
563         spin_lock_bh(&t->atid_lock);
564         if (t->afree &&
565             t->atids_in_use + atomic_read(&t->tids_in_use) + MC5_MIN_TIDS <=
566             t->ntids) {
567                 union active_open_entry *p = t->afree;
568
569                 atid = (p - t->atid_tab) + t->atid_base;
570                 t->afree = p->next;
571                 p->t3c_tid.ctx = ctx;
572                 p->t3c_tid.client = client;
573                 t->atids_in_use++;
574         }
575         spin_unlock_bh(&t->atid_lock);
576         return atid;
577 }
578
579 EXPORT_SYMBOL(cxgb3_alloc_atid);
580
581 int cxgb3_alloc_stid(struct t3cdev *tdev, struct cxgb3_client *client,
582                      void *ctx)
583 {
584         int stid = -1;
585         struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
586
587         spin_lock_bh(&t->stid_lock);
588         if (t->sfree) {
589                 union listen_entry *p = t->sfree;
590
591                 stid = (p - t->stid_tab) + t->stid_base;
592                 t->sfree = p->next;
593                 p->t3c_tid.ctx = ctx;
594                 p->t3c_tid.client = client;
595                 t->stids_in_use++;
596         }
597         spin_unlock_bh(&t->stid_lock);
598         return stid;
599 }
600
601 EXPORT_SYMBOL(cxgb3_alloc_stid);
602
603 /* Get the t3cdev associated with a net_device */
604 struct t3cdev *dev2t3cdev(struct net_device *dev)
605 {
606         const struct port_info *pi = netdev_priv(dev);
607
608         return (struct t3cdev *)pi->adapter;
609 }
610
611 EXPORT_SYMBOL(dev2t3cdev);
612
613 static int do_smt_write_rpl(struct t3cdev *dev, struct sk_buff *skb)
614 {
615         struct cpl_smt_write_rpl *rpl = cplhdr(skb);
616
617         if (rpl->status != CPL_ERR_NONE)
618                 printk(KERN_ERR
619                        "Unexpected SMT_WRITE_RPL status %u for entry %u\n",
620                        rpl->status, GET_TID(rpl));
621
622         return CPL_RET_BUF_DONE;
623 }
624
625 static int do_l2t_write_rpl(struct t3cdev *dev, struct sk_buff *skb)
626 {
627         struct cpl_l2t_write_rpl *rpl = cplhdr(skb);
628
629         if (rpl->status != CPL_ERR_NONE)
630                 printk(KERN_ERR
631                        "Unexpected L2T_WRITE_RPL status %u for entry %u\n",
632                        rpl->status, GET_TID(rpl));
633
634         return CPL_RET_BUF_DONE;
635 }
636
637 static int do_act_open_rpl(struct t3cdev *dev, struct sk_buff *skb)
638 {
639         struct cpl_act_open_rpl *rpl = cplhdr(skb);
640         unsigned int atid = G_TID(ntohl(rpl->atid));
641         struct t3c_tid_entry *t3c_tid;
642
643         t3c_tid = lookup_atid(&(T3C_DATA(dev))->tid_maps, atid);
644         if (t3c_tid && t3c_tid->ctx && t3c_tid->client &&
645             t3c_tid->client->handlers &&
646             t3c_tid->client->handlers[CPL_ACT_OPEN_RPL]) {
647                 return t3c_tid->client->handlers[CPL_ACT_OPEN_RPL] (dev, skb,
648                                                                     t3c_tid->
649                                                                     ctx);
650         } else {
651                 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
652                        dev->name, CPL_ACT_OPEN_RPL);
653                 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
654         }
655 }
656
657 static int do_stid_rpl(struct t3cdev *dev, struct sk_buff *skb)
658 {
659         union opcode_tid *p = cplhdr(skb);
660         unsigned int stid = G_TID(ntohl(p->opcode_tid));
661         struct t3c_tid_entry *t3c_tid;
662
663         t3c_tid = lookup_stid(&(T3C_DATA(dev))->tid_maps, stid);
664         if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
665             t3c_tid->client->handlers[p->opcode]) {
666                 return t3c_tid->client->handlers[p->opcode] (dev, skb,
667                                                              t3c_tid->ctx);
668         } else {
669                 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
670                        dev->name, p->opcode);
671                 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
672         }
673 }
674
675 static int do_hwtid_rpl(struct t3cdev *dev, struct sk_buff *skb)
676 {
677         union opcode_tid *p = cplhdr(skb);
678         unsigned int hwtid = G_TID(ntohl(p->opcode_tid));
679         struct t3c_tid_entry *t3c_tid;
680
681         t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid);
682         if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
683             t3c_tid->client->handlers[p->opcode]) {
684                 return t3c_tid->client->handlers[p->opcode]
685                     (dev, skb, t3c_tid->ctx);
686         } else {
687                 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
688                        dev->name, p->opcode);
689                 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
690         }
691 }
692
693 static int do_cr(struct t3cdev *dev, struct sk_buff *skb)
694 {
695         struct cpl_pass_accept_req *req = cplhdr(skb);
696         unsigned int stid = G_PASS_OPEN_TID(ntohl(req->tos_tid));
697         struct tid_info *t = &(T3C_DATA(dev))->tid_maps;
698         struct t3c_tid_entry *t3c_tid;
699         unsigned int tid = GET_TID(req);
700
701         if (unlikely(tid >= t->ntids)) {
702                 printk("%s: passive open TID %u too large\n",
703                        dev->name, tid);
704                 t3_fatal_err(tdev2adap(dev));
705                 return CPL_RET_BUF_DONE;
706         }
707
708         t3c_tid = lookup_stid(t, stid);
709         if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
710             t3c_tid->client->handlers[CPL_PASS_ACCEPT_REQ]) {
711                 return t3c_tid->client->handlers[CPL_PASS_ACCEPT_REQ]
712                     (dev, skb, t3c_tid->ctx);
713         } else {
714                 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
715                        dev->name, CPL_PASS_ACCEPT_REQ);
716                 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
717         }
718 }
719
720 /*
721  * Returns an sk_buff for a reply CPL message of size len.  If the input
722  * sk_buff has no other users it is trimmed and reused, otherwise a new buffer
723  * is allocated.  The input skb must be of size at least len.  Note that this
724  * operation does not destroy the original skb data even if it decides to reuse
725  * the buffer.
726  */
727 static struct sk_buff *cxgb3_get_cpl_reply_skb(struct sk_buff *skb, size_t len,
728                                                gfp_t gfp)
729 {
730         if (likely(!skb_cloned(skb))) {
731                 BUG_ON(skb->len < len);
732                 __skb_trim(skb, len);
733                 skb_get(skb);
734         } else {
735                 skb = alloc_skb(len, gfp);
736                 if (skb)
737                         __skb_put(skb, len);
738         }
739         return skb;
740 }
741
742 static int do_abort_req_rss(struct t3cdev *dev, struct sk_buff *skb)
743 {
744         union opcode_tid *p = cplhdr(skb);
745         unsigned int hwtid = G_TID(ntohl(p->opcode_tid));
746         struct t3c_tid_entry *t3c_tid;
747
748         t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid);
749         if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
750             t3c_tid->client->handlers[p->opcode]) {
751                 return t3c_tid->client->handlers[p->opcode]
752                     (dev, skb, t3c_tid->ctx);
753         } else {
754                 struct cpl_abort_req_rss *req = cplhdr(skb);
755                 struct cpl_abort_rpl *rpl;
756                 struct sk_buff *reply_skb;
757                 unsigned int tid = GET_TID(req);
758                 u8 cmd = req->status;
759
760                 if (req->status == CPL_ERR_RTX_NEG_ADVICE ||
761                     req->status == CPL_ERR_PERSIST_NEG_ADVICE)
762                         goto out;
763
764                 reply_skb = cxgb3_get_cpl_reply_skb(skb,
765                                                     sizeof(struct
766                                                            cpl_abort_rpl),
767                                                     GFP_ATOMIC);
768
769                 if (!reply_skb) {
770                         printk("do_abort_req_rss: couldn't get skb!\n");
771                         goto out;
772                 }
773                 reply_skb->priority = CPL_PRIORITY_DATA;
774                 __skb_put(reply_skb, sizeof(struct cpl_abort_rpl));
775                 rpl = cplhdr(reply_skb);
776                 rpl->wr.wr_hi =
777                     htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_RPL));
778                 rpl->wr.wr_lo = htonl(V_WR_TID(tid));
779                 OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_ABORT_RPL, tid));
780                 rpl->cmd = cmd;
781                 cxgb3_ofld_send(dev, reply_skb);
782 out:
783                 return CPL_RET_BUF_DONE;
784         }
785 }
786
787 static int do_act_establish(struct t3cdev *dev, struct sk_buff *skb)
788 {
789         struct cpl_act_establish *req = cplhdr(skb);
790         unsigned int atid = G_PASS_OPEN_TID(ntohl(req->tos_tid));
791         struct tid_info *t = &(T3C_DATA(dev))->tid_maps;
792         struct t3c_tid_entry *t3c_tid;
793         unsigned int tid = GET_TID(req);
794
795         if (unlikely(tid >= t->ntids)) {
796                 printk("%s: active establish TID %u too large\n",
797                        dev->name, tid);
798                 t3_fatal_err(tdev2adap(dev));
799                 return CPL_RET_BUF_DONE;
800         }
801
802         t3c_tid = lookup_atid(t, atid);
803         if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
804             t3c_tid->client->handlers[CPL_ACT_ESTABLISH]) {
805                 return t3c_tid->client->handlers[CPL_ACT_ESTABLISH]
806                     (dev, skb, t3c_tid->ctx);
807         } else {
808                 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
809                        dev->name, CPL_ACT_ESTABLISH);
810                 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
811         }
812 }
813
814 static int do_trace(struct t3cdev *dev, struct sk_buff *skb)
815 {
816         struct cpl_trace_pkt *p = cplhdr(skb);
817
818         skb->protocol = htons(0xffff);
819         skb->dev = dev->lldev;
820         skb_pull(skb, sizeof(*p));
821         skb_reset_mac_header(skb);
822         netif_receive_skb(skb);
823         return 0;
824 }
825
826 static int do_term(struct t3cdev *dev, struct sk_buff *skb)
827 {
828         unsigned int hwtid = ntohl(skb->priority) >> 8 & 0xfffff;
829         unsigned int opcode = G_OPCODE(ntohl(skb->csum));
830         struct t3c_tid_entry *t3c_tid;
831
832         t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid);
833         if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
834             t3c_tid->client->handlers[opcode]) {
835                 return t3c_tid->client->handlers[opcode] (dev, skb,
836                                                           t3c_tid->ctx);
837         } else {
838                 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
839                        dev->name, opcode);
840                 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
841         }
842 }
843
844 static int nb_callback(struct notifier_block *self, unsigned long event,
845                        void *ctx)
846 {
847         switch (event) {
848         case (NETEVENT_NEIGH_UPDATE):{
849                 cxgb_neigh_update((struct neighbour *)ctx);
850                 break;
851         }
852         case (NETEVENT_PMTU_UPDATE):
853                 break;
854         case (NETEVENT_REDIRECT):{
855                 struct netevent_redirect *nr = ctx;
856                 cxgb_redirect(nr->old, nr->new);
857                 cxgb_neigh_update(nr->new->neighbour);
858                 break;
859         }
860         default:
861                 break;
862         }
863         return 0;
864 }
865
866 static struct notifier_block nb = {
867         .notifier_call = nb_callback
868 };
869
870 /*
871  * Process a received packet with an unknown/unexpected CPL opcode.
872  */
873 static int do_bad_cpl(struct t3cdev *dev, struct sk_buff *skb)
874 {
875         printk(KERN_ERR "%s: received bad CPL command 0x%x\n", dev->name,
876                *skb->data);
877         return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
878 }
879
880 /*
881  * Handlers for each CPL opcode
882  */
883 static cpl_handler_func cpl_handlers[NUM_CPL_CMDS];
884
885 /*
886  * Add a new handler to the CPL dispatch table.  A NULL handler may be supplied
887  * to unregister an existing handler.
888  */
889 void t3_register_cpl_handler(unsigned int opcode, cpl_handler_func h)
890 {
891         if (opcode < NUM_CPL_CMDS)
892                 cpl_handlers[opcode] = h ? h : do_bad_cpl;
893         else
894                 printk(KERN_ERR "T3C: handler registration for "
895                        "opcode %x failed\n", opcode);
896 }
897
898 EXPORT_SYMBOL(t3_register_cpl_handler);
899
900 /*
901  * T3CDEV's receive method.
902  */
903 int process_rx(struct t3cdev *dev, struct sk_buff **skbs, int n)
904 {
905         while (n--) {
906                 struct sk_buff *skb = *skbs++;
907                 unsigned int opcode = G_OPCODE(ntohl(skb->csum));
908                 int ret = cpl_handlers[opcode] (dev, skb);
909
910 #if VALIDATE_TID
911                 if (ret & CPL_RET_UNKNOWN_TID) {
912                         union opcode_tid *p = cplhdr(skb);
913
914                         printk(KERN_ERR "%s: CPL message (opcode %u) had "
915                                "unknown TID %u\n", dev->name, opcode,
916                                G_TID(ntohl(p->opcode_tid)));
917                 }
918 #endif
919                 if (ret & CPL_RET_BUF_DONE)
920                         kfree_skb(skb);
921         }
922         return 0;
923 }
924
925 /*
926  * Sends an sk_buff to a T3C driver after dealing with any active network taps.
927  */
928 int cxgb3_ofld_send(struct t3cdev *dev, struct sk_buff *skb)
929 {
930         int r;
931
932         local_bh_disable();
933         r = dev->send(dev, skb);
934         local_bh_enable();
935         return r;
936 }
937
938 EXPORT_SYMBOL(cxgb3_ofld_send);
939
940 static int is_offloading(struct net_device *dev)
941 {
942         struct adapter *adapter;
943         int i;
944
945         read_lock_bh(&adapter_list_lock);
946         list_for_each_entry(adapter, &adapter_list, adapter_list) {
947                 for_each_port(adapter, i) {
948                         if (dev == adapter->port[i]) {
949                                 read_unlock_bh(&adapter_list_lock);
950                                 return 1;
951                         }
952                 }
953         }
954         read_unlock_bh(&adapter_list_lock);
955         return 0;
956 }
957
958 void cxgb_neigh_update(struct neighbour *neigh)
959 {
960         struct net_device *dev = neigh->dev;
961
962         if (dev && (is_offloading(dev))) {
963                 struct t3cdev *tdev = dev2t3cdev(dev);
964
965                 BUG_ON(!tdev);
966                 t3_l2t_update(tdev, neigh);
967         }
968 }
969
970 static void set_l2t_ix(struct t3cdev *tdev, u32 tid, struct l2t_entry *e)
971 {
972         struct sk_buff *skb;
973         struct cpl_set_tcb_field *req;
974
975         skb = alloc_skb(sizeof(*req), GFP_ATOMIC);
976         if (!skb) {
977                 printk(KERN_ERR "%s: cannot allocate skb!\n", __FUNCTION__);
978                 return;
979         }
980         skb->priority = CPL_PRIORITY_CONTROL;
981         req = (struct cpl_set_tcb_field *)skb_put(skb, sizeof(*req));
982         req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
983         OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid));
984         req->reply = 0;
985         req->cpu_idx = 0;
986         req->word = htons(W_TCB_L2T_IX);
987         req->mask = cpu_to_be64(V_TCB_L2T_IX(M_TCB_L2T_IX));
988         req->val = cpu_to_be64(V_TCB_L2T_IX(e->idx));
989         tdev->send(tdev, skb);
990 }
991
992 void cxgb_redirect(struct dst_entry *old, struct dst_entry *new)
993 {
994         struct net_device *olddev, *newdev;
995         struct tid_info *ti;
996         struct t3cdev *tdev;
997         u32 tid;
998         int update_tcb;
999         struct l2t_entry *e;
1000         struct t3c_tid_entry *te;
1001
1002         olddev = old->neighbour->dev;
1003         newdev = new->neighbour->dev;
1004         if (!is_offloading(olddev))
1005                 return;
1006         if (!is_offloading(newdev)) {
1007                 printk(KERN_WARNING "%s: Redirect to non-offload"
1008                        "device ignored.\n", __FUNCTION__);
1009                 return;
1010         }
1011         tdev = dev2t3cdev(olddev);
1012         BUG_ON(!tdev);
1013         if (tdev != dev2t3cdev(newdev)) {
1014                 printk(KERN_WARNING "%s: Redirect to different "
1015                        "offload device ignored.\n", __FUNCTION__);
1016                 return;
1017         }
1018
1019         /* Add new L2T entry */
1020         e = t3_l2t_get(tdev, new->neighbour, newdev);
1021         if (!e) {
1022                 printk(KERN_ERR "%s: couldn't allocate new l2t entry!\n",
1023                        __FUNCTION__);
1024                 return;
1025         }
1026
1027         /* Walk tid table and notify clients of dst change. */
1028         ti = &(T3C_DATA(tdev))->tid_maps;
1029         for (tid = 0; tid < ti->ntids; tid++) {
1030                 te = lookup_tid(ti, tid);
1031                 BUG_ON(!te);
1032                 if (te && te->ctx && te->client && te->client->redirect) {
1033                         update_tcb = te->client->redirect(te->ctx, old, new, e);
1034                         if (update_tcb) {
1035                                 l2t_hold(L2DATA(tdev), e);
1036                                 set_l2t_ix(tdev, tid, e);
1037                         }
1038                 }
1039         }
1040         l2t_release(L2DATA(tdev), e);
1041 }
1042
1043 /*
1044  * Allocate a chunk of memory using kmalloc or, if that fails, vmalloc.
1045  * The allocated memory is cleared.
1046  */
1047 void *cxgb_alloc_mem(unsigned long size)
1048 {
1049         void *p = kmalloc(size, GFP_KERNEL);
1050
1051         if (!p)
1052                 p = vmalloc(size);
1053         if (p)
1054                 memset(p, 0, size);
1055         return p;
1056 }
1057
1058 /*
1059  * Free memory allocated through t3_alloc_mem().
1060  */
1061 void cxgb_free_mem(void *addr)
1062 {
1063         unsigned long p = (unsigned long)addr;
1064
1065         if (p >= VMALLOC_START && p < VMALLOC_END)
1066                 vfree(addr);
1067         else
1068                 kfree(addr);
1069 }
1070
1071 /*
1072  * Allocate and initialize the TID tables.  Returns 0 on success.
1073  */
1074 static int init_tid_tabs(struct tid_info *t, unsigned int ntids,
1075                          unsigned int natids, unsigned int nstids,
1076                          unsigned int atid_base, unsigned int stid_base)
1077 {
1078         unsigned long size = ntids * sizeof(*t->tid_tab) +
1079             natids * sizeof(*t->atid_tab) + nstids * sizeof(*t->stid_tab);
1080
1081         t->tid_tab = cxgb_alloc_mem(size);
1082         if (!t->tid_tab)
1083                 return -ENOMEM;
1084
1085         t->stid_tab = (union listen_entry *)&t->tid_tab[ntids];
1086         t->atid_tab = (union active_open_entry *)&t->stid_tab[nstids];
1087         t->ntids = ntids;
1088         t->nstids = nstids;
1089         t->stid_base = stid_base;
1090         t->sfree = NULL;
1091         t->natids = natids;
1092         t->atid_base = atid_base;
1093         t->afree = NULL;
1094         t->stids_in_use = t->atids_in_use = 0;
1095         atomic_set(&t->tids_in_use, 0);
1096         spin_lock_init(&t->stid_lock);
1097         spin_lock_init(&t->atid_lock);
1098
1099         /*
1100          * Setup the free lists for stid_tab and atid_tab.
1101          */
1102         if (nstids) {
1103                 while (--nstids)
1104                         t->stid_tab[nstids - 1].next = &t->stid_tab[nstids];
1105                 t->sfree = t->stid_tab;
1106         }
1107         if (natids) {
1108                 while (--natids)
1109                         t->atid_tab[natids - 1].next = &t->atid_tab[natids];
1110                 t->afree = t->atid_tab;
1111         }
1112         return 0;
1113 }
1114
1115 static void free_tid_maps(struct tid_info *t)
1116 {
1117         cxgb_free_mem(t->tid_tab);
1118 }
1119
1120 static inline void add_adapter(struct adapter *adap)
1121 {
1122         write_lock_bh(&adapter_list_lock);
1123         list_add_tail(&adap->adapter_list, &adapter_list);
1124         write_unlock_bh(&adapter_list_lock);
1125 }
1126
1127 static inline void remove_adapter(struct adapter *adap)
1128 {
1129         write_lock_bh(&adapter_list_lock);
1130         list_del(&adap->adapter_list);
1131         write_unlock_bh(&adapter_list_lock);
1132 }
1133
1134 int cxgb3_offload_activate(struct adapter *adapter)
1135 {
1136         struct t3cdev *dev = &adapter->tdev;
1137         int natids, err;
1138         struct t3c_data *t;
1139         struct tid_range stid_range, tid_range;
1140         struct mtutab mtutab;
1141         unsigned int l2t_capacity;
1142
1143         t = kcalloc(1, sizeof(*t), GFP_KERNEL);
1144         if (!t)
1145                 return -ENOMEM;
1146
1147         err = -EOPNOTSUPP;
1148         if (dev->ctl(dev, GET_TX_MAX_CHUNK, &t->tx_max_chunk) < 0 ||
1149             dev->ctl(dev, GET_MAX_OUTSTANDING_WR, &t->max_wrs) < 0 ||
1150             dev->ctl(dev, GET_L2T_CAPACITY, &l2t_capacity) < 0 ||
1151             dev->ctl(dev, GET_MTUS, &mtutab) < 0 ||
1152             dev->ctl(dev, GET_TID_RANGE, &tid_range) < 0 ||
1153             dev->ctl(dev, GET_STID_RANGE, &stid_range) < 0)
1154                 goto out_free;
1155
1156         err = -ENOMEM;
1157         L2DATA(dev) = t3_init_l2t(l2t_capacity);
1158         if (!L2DATA(dev))
1159                 goto out_free;
1160
1161         natids = min(tid_range.num / 2, MAX_ATIDS);
1162         err = init_tid_tabs(&t->tid_maps, tid_range.num, natids,
1163                             stid_range.num, ATID_BASE, stid_range.base);
1164         if (err)
1165                 goto out_free_l2t;
1166
1167         t->mtus = mtutab.mtus;
1168         t->nmtus = mtutab.size;
1169
1170         INIT_WORK(&t->tid_release_task, t3_process_tid_release_list);
1171         spin_lock_init(&t->tid_release_lock);
1172         INIT_LIST_HEAD(&t->list_node);
1173         t->dev = dev;
1174
1175         T3C_DATA(dev) = t;
1176         dev->recv = process_rx;
1177         dev->neigh_update = t3_l2t_update;
1178
1179         /* Register netevent handler once */
1180         if (list_empty(&adapter_list))
1181                 register_netevent_notifier(&nb);
1182
1183         add_adapter(adapter);
1184         return 0;
1185
1186 out_free_l2t:
1187         t3_free_l2t(L2DATA(dev));
1188         L2DATA(dev) = NULL;
1189 out_free:
1190         kfree(t);
1191         return err;
1192 }
1193
1194 void cxgb3_offload_deactivate(struct adapter *adapter)
1195 {
1196         struct t3cdev *tdev = &adapter->tdev;
1197         struct t3c_data *t = T3C_DATA(tdev);
1198
1199         remove_adapter(adapter);
1200         if (list_empty(&adapter_list))
1201                 unregister_netevent_notifier(&nb);
1202
1203         free_tid_maps(&t->tid_maps);
1204         T3C_DATA(tdev) = NULL;
1205         t3_free_l2t(L2DATA(tdev));
1206         L2DATA(tdev) = NULL;
1207         kfree(t);
1208 }
1209
1210 static inline void register_tdev(struct t3cdev *tdev)
1211 {
1212         static int unit;
1213
1214         mutex_lock(&cxgb3_db_lock);
1215         snprintf(tdev->name, sizeof(tdev->name), "ofld_dev%d", unit++);
1216         list_add_tail(&tdev->ofld_dev_list, &ofld_dev_list);
1217         mutex_unlock(&cxgb3_db_lock);
1218 }
1219
1220 static inline void unregister_tdev(struct t3cdev *tdev)
1221 {
1222         mutex_lock(&cxgb3_db_lock);
1223         list_del(&tdev->ofld_dev_list);
1224         mutex_unlock(&cxgb3_db_lock);
1225 }
1226
1227 void __devinit cxgb3_adapter_ofld(struct adapter *adapter)
1228 {
1229         struct t3cdev *tdev = &adapter->tdev;
1230
1231         INIT_LIST_HEAD(&tdev->ofld_dev_list);
1232
1233         cxgb3_set_dummy_ops(tdev);
1234         tdev->send = t3_offload_tx;
1235         tdev->ctl = cxgb_offload_ctl;
1236         tdev->type = adapter->params.rev == 0 ? T3A : T3B;
1237
1238         register_tdev(tdev);
1239 }
1240
1241 void __devexit cxgb3_adapter_unofld(struct adapter *adapter)
1242 {
1243         struct t3cdev *tdev = &adapter->tdev;
1244
1245         tdev->recv = NULL;
1246         tdev->neigh_update = NULL;
1247
1248         unregister_tdev(tdev);
1249 }
1250
1251 void __init cxgb3_offload_init(void)
1252 {
1253         int i;
1254
1255         for (i = 0; i < NUM_CPL_CMDS; ++i)
1256                 cpl_handlers[i] = do_bad_cpl;
1257
1258         t3_register_cpl_handler(CPL_SMT_WRITE_RPL, do_smt_write_rpl);
1259         t3_register_cpl_handler(CPL_L2T_WRITE_RPL, do_l2t_write_rpl);
1260         t3_register_cpl_handler(CPL_PASS_OPEN_RPL, do_stid_rpl);
1261         t3_register_cpl_handler(CPL_CLOSE_LISTSRV_RPL, do_stid_rpl);
1262         t3_register_cpl_handler(CPL_PASS_ACCEPT_REQ, do_cr);
1263         t3_register_cpl_handler(CPL_PASS_ESTABLISH, do_hwtid_rpl);
1264         t3_register_cpl_handler(CPL_ABORT_RPL_RSS, do_hwtid_rpl);
1265         t3_register_cpl_handler(CPL_ABORT_RPL, do_hwtid_rpl);
1266         t3_register_cpl_handler(CPL_RX_URG_NOTIFY, do_hwtid_rpl);
1267         t3_register_cpl_handler(CPL_RX_DATA, do_hwtid_rpl);
1268         t3_register_cpl_handler(CPL_TX_DATA_ACK, do_hwtid_rpl);
1269         t3_register_cpl_handler(CPL_TX_DMA_ACK, do_hwtid_rpl);
1270         t3_register_cpl_handler(CPL_ACT_OPEN_RPL, do_act_open_rpl);
1271         t3_register_cpl_handler(CPL_PEER_CLOSE, do_hwtid_rpl);
1272         t3_register_cpl_handler(CPL_CLOSE_CON_RPL, do_hwtid_rpl);
1273         t3_register_cpl_handler(CPL_ABORT_REQ_RSS, do_abort_req_rss);
1274         t3_register_cpl_handler(CPL_ACT_ESTABLISH, do_act_establish);
1275         t3_register_cpl_handler(CPL_SET_TCB_RPL, do_hwtid_rpl);
1276         t3_register_cpl_handler(CPL_GET_TCB_RPL, do_hwtid_rpl);
1277         t3_register_cpl_handler(CPL_RDMA_TERMINATE, do_term);
1278         t3_register_cpl_handler(CPL_RDMA_EC_STATUS, do_hwtid_rpl);
1279         t3_register_cpl_handler(CPL_TRACE_PKT, do_trace);
1280         t3_register_cpl_handler(CPL_RX_DATA_DDP, do_hwtid_rpl);
1281         t3_register_cpl_handler(CPL_RX_DDP_COMPLETE, do_hwtid_rpl);
1282         t3_register_cpl_handler(CPL_ISCSI_HDR, do_hwtid_rpl);
1283 }