projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[SK_BUFF]: Introduce skb_reset_mac_header(skb)
[linux-2.6-block.git] / drivers / net / cxgb3 / cxgb3_offload.c
CommitLineData
4d22de3e 1/*
1d68e93d 2 * Copyright (c) 2006-2007 Chelsio, Inc. All rights reserved.
4d22de3e
DLR		 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
52static LIST_HEAD(client_list);
53static LIST_HEAD(ofld_dev_list);
54static DEFINE_MUTEX(cxgb3_db_lock);
55
56static DEFINE_RWLOCK(adapter_list_lock);
57static LIST_HEAD(adapter_list);
58
59static const unsigned int MAX_ATIDS = 64 * 1024;
60static const unsigned int ATID_BASE = 0x100000;
61
62static 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 */
76void 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
92EXPORT_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 */
101void 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
117EXPORT_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 */
125void 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 */
144void 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
156static 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) {
5c15bdec 163 struct vlan_group *grp;
4d22de3e
DLR		 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;
5c15bdec
DA		 170 dev = NULL;
171 if (grp)
172 dev = vlan_group_get_device(grp, vlan);
4d22de3e
DLR		 173 } else
174 while (dev->master)
175 dev = dev->master;
176 return dev;
177 }
178 }
179 return NULL;
180}
181
182static 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
220static 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
312static 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 int i;
321
322 switch (req) {
323 case GET_MAX_OUTSTANDING_WR:
324 *(unsigned int *)data = FW_WR_NUM;
325 break;
326 case GET_WR_LEN:
327 *(unsigned int *)data = WR_FLITS;
328 break;
329 case GET_TX_MAX_CHUNK:
330 *(unsigned int *)data = 1 << 20; /* 1MB */
331 break;
332 case GET_TID_RANGE:
333 tid = data;
334 tid->num = t3_mc5_size(&adapter->mc5) -
335 adapter->params.mc5.nroutes -
336 adapter->params.mc5.nfilters - adapter->params.mc5.nservers;
337 tid->base = 0;
338 break;
339 case GET_STID_RANGE:
340 tid = data;
341 tid->num = adapter->params.mc5.nservers;
342 tid->base = t3_mc5_size(&adapter->mc5) - tid->num -
343 adapter->params.mc5.nfilters - adapter->params.mc5.nroutes;
344 break;
345 case GET_L2T_CAPACITY:
346 *(unsigned int *)data = 2048;
347 break;
348 case GET_MTUS:
349 mtup = data;
350 mtup->size = NMTUS;
351 mtup->mtus = adapter->params.mtus;
352 break;
353 case GET_IFF_FROM_MAC:
354 iffmacp = data;
355 iffmacp->dev = get_iff_from_mac(adapter, iffmacp->mac_addr,
356 iffmacp->vlan_tag &
357 VLAN_VID_MASK);
358 break;
359 case GET_DDP_PARAMS:
360 ddpp = data;
361 ddpp->llimit = t3_read_reg(adapter, A_ULPRX_TDDP_LLIMIT);
362 ddpp->ulimit = t3_read_reg(adapter, A_ULPRX_TDDP_ULIMIT);
363 ddpp->tag_mask = t3_read_reg(adapter, A_ULPRX_TDDP_TAGMASK);
364 break;
365 case GET_PORTS:
366 ports = data;
367 ports->nports = adapter->params.nports;
368 for_each_port(adapter, i)
369 ports->lldevs[i] = adapter->port[i];
370 break;
371 case ULP_ISCSI_GET_PARAMS:
372 case ULP_ISCSI_SET_PARAMS:
373 if (!offload_running(adapter))
374 return -EAGAIN;
375 return cxgb_ulp_iscsi_ctl(adapter, req, data);
376 case RDMA_GET_PARAMS:
377 case RDMA_CQ_OP:
378 case RDMA_CQ_SETUP:
379 case RDMA_CQ_DISABLE:
380 case RDMA_CTRL_QP_SETUP:
381 case RDMA_GET_MEM:
382 if (!offload_running(adapter))
383 return -EAGAIN;
384 return cxgb_rdma_ctl(adapter, req, data);
385 default:
386 return -EOPNOTSUPP;
387 }
388 return 0;
389}
390
391/*
392 * Dummy handler for Rx offload packets in case we get an offload packet before
393 * proper processing is setup. This complains and drops the packet as it isn't
394 * normal to get offload packets at this stage.
395 */
396static int rx_offload_blackhole(struct t3cdev *dev, struct sk_buff **skbs,
397 int n)
398{
399 CH_ERR(tdev2adap(dev), "%d unexpected offload packets, first data %u\n",
b5344972 400 n, ntohl(*(__be32 *)skbs[0]->data));
4d22de3e
DLR		 401 while (n--)
402 dev_kfree_skb_any(skbs[n]);
403 return 0;
404}
405
406static void dummy_neigh_update(struct t3cdev *dev, struct neighbour *neigh)
407{
408}
409
410void cxgb3_set_dummy_ops(struct t3cdev *dev)
411{
412 dev->recv = rx_offload_blackhole;
413 dev->neigh_update = dummy_neigh_update;
414}
415
416/*
417 * Free an active-open TID.
418 */
419void *cxgb3_free_atid(struct t3cdev *tdev, int atid)
420{
421 struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
422 union active_open_entry *p = atid2entry(t, atid);
423 void *ctx = p->t3c_tid.ctx;
424
425 spin_lock_bh(&t->atid_lock);
426 p->next = t->afree;
427 t->afree = p;
428 t->atids_in_use--;
429 spin_unlock_bh(&t->atid_lock);
430
431 return ctx;
432}
433
434EXPORT_SYMBOL(cxgb3_free_atid);
435
436/*
437 * Free a server TID and return it to the free pool.
438 */
439void cxgb3_free_stid(struct t3cdev *tdev, int stid)
440{
441 struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
442 union listen_entry *p = stid2entry(t, stid);
443
444 spin_lock_bh(&t->stid_lock);
445 p->next = t->sfree;
446 t->sfree = p;
447 t->stids_in_use--;
448 spin_unlock_bh(&t->stid_lock);
449}
450
451EXPORT_SYMBOL(cxgb3_free_stid);
452
453void cxgb3_insert_tid(struct t3cdev *tdev, struct cxgb3_client *client,
454 void *ctx, unsigned int tid)
455{
456 struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
457
458 t->tid_tab[tid].client = client;
459 t->tid_tab[tid].ctx = ctx;
460 atomic_inc(&t->tids_in_use);
461}
462
463EXPORT_SYMBOL(cxgb3_insert_tid);
464
465/*
466 * Populate a TID_RELEASE WR. The skb must be already propely sized.
467 */
468static inline void mk_tid_release(struct sk_buff *skb, unsigned int tid)
469{
470 struct cpl_tid_release *req;
471
472 skb->priority = CPL_PRIORITY_SETUP;
473 req = (struct cpl_tid_release *)__skb_put(skb, sizeof(*req));
474 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
475 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_TID_RELEASE, tid));
476}
477
478static void t3_process_tid_release_list(struct work_struct *work)
479{
480 struct t3c_data *td = container_of(work, struct t3c_data,
481 tid_release_task);
482 struct sk_buff *skb;
483 struct t3cdev *tdev = td->dev;
484
485
486 spin_lock_bh(&td->tid_release_lock);
487 while (td->tid_release_list) {
488 struct t3c_tid_entry *p = td->tid_release_list;
489
490 td->tid_release_list = (struct t3c_tid_entry *)p->ctx;
491 spin_unlock_bh(&td->tid_release_lock);
492
493 skb = alloc_skb(sizeof(struct cpl_tid_release),
494 GFP_KERNEL | __GFP_NOFAIL);
495 mk_tid_release(skb, p - td->tid_maps.tid_tab);
496 cxgb3_ofld_send(tdev, skb);
497 p->ctx = NULL;
498 spin_lock_bh(&td->tid_release_lock);
499 }
500 spin_unlock_bh(&td->tid_release_lock);
501}
502
503/* use ctx as a next pointer in the tid release list */
504void cxgb3_queue_tid_release(struct t3cdev *tdev, unsigned int tid)
505{
506 struct t3c_data *td = T3C_DATA(tdev);
507 struct t3c_tid_entry *p = &td->tid_maps.tid_tab[tid];
508
509 spin_lock_bh(&td->tid_release_lock);
510 p->ctx = (void *)td->tid_release_list;
606fcd0b 511 p->client = NULL;
4d22de3e
DLR		 512 td->tid_release_list = p;
513 if (!p->ctx)
514 schedule_work(&td->tid_release_task);
515 spin_unlock_bh(&td->tid_release_lock);
516}
517
518EXPORT_SYMBOL(cxgb3_queue_tid_release);
519
520/*
521 * Remove a tid from the TID table. A client may defer processing its last
522 * CPL message if it is locked at the time it arrives, and while the message
523 * sits in the client's backlog the TID may be reused for another connection.
524 * To handle this we atomically switch the TID association if it still points
525 * to the original client context.
526 */
527void cxgb3_remove_tid(struct t3cdev *tdev, void *ctx, unsigned int tid)
528{
529 struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
530
531 BUG_ON(tid >= t->ntids);
532 if (tdev->type == T3A)
533 (void)cmpxchg(&t->tid_tab[tid].ctx, ctx, NULL);
534 else {
535 struct sk_buff *skb;
536
537 skb = alloc_skb(sizeof(struct cpl_tid_release), GFP_ATOMIC);
538 if (likely(skb)) {
539 mk_tid_release(skb, tid);
540 cxgb3_ofld_send(tdev, skb);
541 t->tid_tab[tid].ctx = NULL;
542 } else
543 cxgb3_queue_tid_release(tdev, tid);
544 }
545 atomic_dec(&t->tids_in_use);
546}
547
548EXPORT_SYMBOL(cxgb3_remove_tid);
549
550int cxgb3_alloc_atid(struct t3cdev *tdev, struct cxgb3_client *client,
551 void *ctx)
552{
553 int atid = -1;
554 struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
555
556 spin_lock_bh(&t->atid_lock);
9f238486
DLR		 557 if (t->afree &&
558 t->atids_in_use + atomic_read(&t->tids_in_use) + MC5_MIN_TIDS <=
559 t->ntids) {
4d22de3e
DLR		 560 union active_open_entry *p = t->afree;
561
562 atid = (p - t->atid_tab) + t->atid_base;
563 t->afree = p->next;
564 p->t3c_tid.ctx = ctx;
565 p->t3c_tid.client = client;
566 t->atids_in_use++;
567 }
568 spin_unlock_bh(&t->atid_lock);
569 return atid;
570}
571
572EXPORT_SYMBOL(cxgb3_alloc_atid);
573
574int cxgb3_alloc_stid(struct t3cdev *tdev, struct cxgb3_client *client,
575 void *ctx)
576{
577 int stid = -1;
578 struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
579
580 spin_lock_bh(&t->stid_lock);
581 if (t->sfree) {
582 union listen_entry *p = t->sfree;
583
584 stid = (p - t->stid_tab) + t->stid_base;
585 t->sfree = p->next;
586 p->t3c_tid.ctx = ctx;
587 p->t3c_tid.client = client;
588 t->stids_in_use++;
589 }
590 spin_unlock_bh(&t->stid_lock);
591 return stid;
592}
593
594EXPORT_SYMBOL(cxgb3_alloc_stid);
595
596static int do_smt_write_rpl(struct t3cdev *dev, struct sk_buff *skb)
597{
598 struct cpl_smt_write_rpl *rpl = cplhdr(skb);
599
600 if (rpl->status != CPL_ERR_NONE)
601 printk(KERN_ERR
602 "Unexpected SMT_WRITE_RPL status %u for entry %u\n",
603 rpl->status, GET_TID(rpl));
604
605 return CPL_RET_BUF_DONE;
606}
607
608static int do_l2t_write_rpl(struct t3cdev *dev, struct sk_buff *skb)
609{
610 struct cpl_l2t_write_rpl *rpl = cplhdr(skb);
611
612 if (rpl->status != CPL_ERR_NONE)
613 printk(KERN_ERR
614 "Unexpected L2T_WRITE_RPL status %u for entry %u\n",
615 rpl->status, GET_TID(rpl));
616
617 return CPL_RET_BUF_DONE;
618}
619
620static int do_act_open_rpl(struct t3cdev *dev, struct sk_buff *skb)
621{
622 struct cpl_act_open_rpl *rpl = cplhdr(skb);
623 unsigned int atid = G_TID(ntohl(rpl->atid));
624 struct t3c_tid_entry *t3c_tid;
625
626 t3c_tid = lookup_atid(&(T3C_DATA(dev))->tid_maps, atid);
606fcd0b
DLR		 627 if (t3c_tid && t3c_tid->ctx && t3c_tid->client &&
628 t3c_tid->client->handlers &&
4d22de3e
DLR		 629 t3c_tid->client->handlers[CPL_ACT_OPEN_RPL]) {
630 return t3c_tid->client->handlers[CPL_ACT_OPEN_RPL] (dev, skb,
631 t3c_tid->
632 ctx);
633 } else {
634 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
635 dev->name, CPL_ACT_OPEN_RPL);
636 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
637 }
638}
639
640static int do_stid_rpl(struct t3cdev *dev, struct sk_buff *skb)
641{
642 union opcode_tid *p = cplhdr(skb);
643 unsigned int stid = G_TID(ntohl(p->opcode_tid));
644 struct t3c_tid_entry *t3c_tid;
645
646 t3c_tid = lookup_stid(&(T3C_DATA(dev))->tid_maps, stid);
606fcd0b 647 if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
4d22de3e
DLR		 648 t3c_tid->client->handlers[p->opcode]) {
649 return t3c_tid->client->handlers[p->opcode] (dev, skb,
650 t3c_tid->ctx);
651 } else {
652 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
653 dev->name, p->opcode);
654 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
655 }
656}
657
658static int do_hwtid_rpl(struct t3cdev *dev, struct sk_buff *skb)
659{
660 union opcode_tid *p = cplhdr(skb);
661 unsigned int hwtid = G_TID(ntohl(p->opcode_tid));
662 struct t3c_tid_entry *t3c_tid;
663
664 t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid);
606fcd0b 665 if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
4d22de3e
DLR		 666 t3c_tid->client->handlers[p->opcode]) {
667 return t3c_tid->client->handlers[p->opcode]
668 (dev, skb, t3c_tid->ctx);
669 } else {
670 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
671 dev->name, p->opcode);
672 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
673 }
674}
675
676static int do_cr(struct t3cdev *dev, struct sk_buff *skb)
677{
678 struct cpl_pass_accept_req *req = cplhdr(skb);
679 unsigned int stid = G_PASS_OPEN_TID(ntohl(req->tos_tid));
680 struct t3c_tid_entry *t3c_tid;
681
682 t3c_tid = lookup_stid(&(T3C_DATA(dev))->tid_maps, stid);
683 if (t3c_tid->ctx && t3c_tid->client->handlers &&
684 t3c_tid->client->handlers[CPL_PASS_ACCEPT_REQ]) {
685 return t3c_tid->client->handlers[CPL_PASS_ACCEPT_REQ]
686 (dev, skb, t3c_tid->ctx);
687 } else {
688 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
689 dev->name, CPL_PASS_ACCEPT_REQ);
690 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
691 }
692}
693
606fcd0b
DLR		 694/*
695 * Returns an sk_buff for a reply CPL message of size len. If the input
696 * sk_buff has no other users it is trimmed and reused, otherwise a new buffer
697 * is allocated. The input skb must be of size at least len. Note that this
698 * operation does not destroy the original skb data even if it decides to reuse
699 * the buffer.
700 */
701static struct sk_buff *cxgb3_get_cpl_reply_skb(struct sk_buff *skb, size_t len,
702 int gfp)
703{
704 if (likely(!skb_cloned(skb))) {
705 BUG_ON(skb->len < len);
706 __skb_trim(skb, len);
707 skb_get(skb);
708 } else {
709 skb = alloc_skb(len, gfp);
710 if (skb)
711 __skb_put(skb, len);
712 }
713 return skb;
714}
715
4d22de3e
DLR		 716static int do_abort_req_rss(struct t3cdev *dev, struct sk_buff *skb)
717{
718 union opcode_tid *p = cplhdr(skb);
719 unsigned int hwtid = G_TID(ntohl(p->opcode_tid));
720 struct t3c_tid_entry *t3c_tid;
721
722 t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid);
606fcd0b 723 if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
4d22de3e
DLR		 724 t3c_tid->client->handlers[p->opcode]) {
725 return t3c_tid->client->handlers[p->opcode]
726 (dev, skb, t3c_tid->ctx);
727 } else {
728 struct cpl_abort_req_rss *req = cplhdr(skb);
729 struct cpl_abort_rpl *rpl;
606fcd0b
DLR		 730 struct sk_buff *reply_skb;
731 unsigned int tid = GET_TID(req);
732 u8 cmd = req->status;
733
734 if (req->status == CPL_ERR_RTX_NEG_ADVICE ||
735 req->status == CPL_ERR_PERSIST_NEG_ADVICE)
736 goto out;
4d22de3e 737
606fcd0b
DLR		 738 reply_skb = cxgb3_get_cpl_reply_skb(skb,
739 sizeof(struct
740 cpl_abort_rpl),
741 GFP_ATOMIC);
742
743 if (!reply_skb) {
4d22de3e
DLR		 744 printk("do_abort_req_rss: couldn't get skb!\n");
745 goto out;
746 }
606fcd0b
DLR		 747 reply_skb->priority = CPL_PRIORITY_DATA;
748 __skb_put(reply_skb, sizeof(struct cpl_abort_rpl));
749 rpl = cplhdr(reply_skb);
4d22de3e
DLR		 750 rpl->wr.wr_hi =
751 htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_RPL));
606fcd0b
DLR		 752 rpl->wr.wr_lo = htonl(V_WR_TID(tid));
753 OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_ABORT_RPL, tid));
754 rpl->cmd = cmd;
755 cxgb3_ofld_send(dev, reply_skb);
4d22de3e
DLR		 756out:
757 return CPL_RET_BUF_DONE;
758 }
759}
760
761static int do_act_establish(struct t3cdev *dev, struct sk_buff *skb)
762{
763 struct cpl_act_establish *req = cplhdr(skb);
764 unsigned int atid = G_PASS_OPEN_TID(ntohl(req->tos_tid));
765 struct t3c_tid_entry *t3c_tid;
766
767 t3c_tid = lookup_atid(&(T3C_DATA(dev))->tid_maps, atid);
606fcd0b 768 if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
4d22de3e
DLR		 769 t3c_tid->client->handlers[CPL_ACT_ESTABLISH]) {
770 return t3c_tid->client->handlers[CPL_ACT_ESTABLISH]
771 (dev, skb, t3c_tid->ctx);
772 } else {
773 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
774 dev->name, CPL_PASS_ACCEPT_REQ);
775 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
776 }
777}
778
4d22de3e
DLR		 779static int do_trace(struct t3cdev *dev, struct sk_buff *skb)
780{
781 struct cpl_trace_pkt *p = cplhdr(skb);
782
b5344972 783 skb->protocol = htons(0xffff);
4d22de3e
DLR		 784 skb->dev = dev->lldev;
785 skb_pull(skb, sizeof(*p));
459a98ed 786 skb_reset_mac_header(skb);
4d22de3e
DLR		 787 netif_receive_skb(skb);
788 return 0;
789}
790
791static int do_term(struct t3cdev *dev, struct sk_buff *skb)
792{
793 unsigned int hwtid = ntohl(skb->priority) >> 8 & 0xfffff;
794 unsigned int opcode = G_OPCODE(ntohl(skb->csum));
795 struct t3c_tid_entry *t3c_tid;
796
797 t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid);
606fcd0b 798 if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
4d22de3e
DLR		 799 t3c_tid->client->handlers[opcode]) {
800 return t3c_tid->client->handlers[opcode] (dev, skb,
801 t3c_tid->ctx);
802 } else {
803 printk(KERN_ERR "%s: received clientless CPL command 0x%x\n",
804 dev->name, opcode);
805 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
806 }
807}
808
809static int nb_callback(struct notifier_block *self, unsigned long event,
810 void *ctx)
811{
812 switch (event) {
813 case (NETEVENT_NEIGH_UPDATE):{
814 cxgb_neigh_update((struct neighbour *)ctx);
815 break;
816 }
817 case (NETEVENT_PMTU_UPDATE):
818 break;
819 case (NETEVENT_REDIRECT):{
820 struct netevent_redirect *nr = ctx;
821 cxgb_redirect(nr->old, nr->new);
822 cxgb_neigh_update(nr->new->neighbour);
823 break;
824 }
825 default:
826 break;
827 }
828 return 0;
829}
830
831static struct notifier_block nb = {
832 .notifier_call = nb_callback
833};
834
835/*
836 * Process a received packet with an unknown/unexpected CPL opcode.
837 */
838static int do_bad_cpl(struct t3cdev *dev, struct sk_buff *skb)
839{
840 printk(KERN_ERR "%s: received bad CPL command 0x%x\n", dev->name,
841 *skb->data);
842 return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG;
843}
844
845/*
846 * Handlers for each CPL opcode
847 */
848static cpl_handler_func cpl_handlers[NUM_CPL_CMDS];
849
850/*
851 * Add a new handler to the CPL dispatch table. A NULL handler may be supplied
852 * to unregister an existing handler.
853 */
854void t3_register_cpl_handler(unsigned int opcode, cpl_handler_func h)
855{
856 if (opcode < NUM_CPL_CMDS)
857 cpl_handlers[opcode] = h ? h : do_bad_cpl;
858 else
859 printk(KERN_ERR "T3C: handler registration for "
860 "opcode %x failed\n", opcode);
861}
862
863EXPORT_SYMBOL(t3_register_cpl_handler);
864
865/*
866 * T3CDEV's receive method.
867 */
868int process_rx(struct t3cdev *dev, struct sk_buff **skbs, int n)
869{
870 while (n--) {
871 struct sk_buff *skb = *skbs++;
872 unsigned int opcode = G_OPCODE(ntohl(skb->csum));
873 int ret = cpl_handlers[opcode] (dev, skb);
874
875#if VALIDATE_TID
876 if (ret & CPL_RET_UNKNOWN_TID) {
877 union opcode_tid *p = cplhdr(skb);
878
879 printk(KERN_ERR "%s: CPL message (opcode %u) had "
880 "unknown TID %u\n", dev->name, opcode,
881 G_TID(ntohl(p->opcode_tid)));
882 }
883#endif
884 if (ret & CPL_RET_BUF_DONE)
885 kfree_skb(skb);
886 }
887 return 0;
888}
889
890/*
891 * Sends an sk_buff to a T3C driver after dealing with any active network taps.
892 */
893int cxgb3_ofld_send(struct t3cdev *dev, struct sk_buff *skb)
894{
895 int r;
896
897 local_bh_disable();
898 r = dev->send(dev, skb);
899 local_bh_enable();
900 return r;
901}
902
903EXPORT_SYMBOL(cxgb3_ofld_send);
904
905static int is_offloading(struct net_device *dev)
906{
907 struct adapter *adapter;
908 int i;
909
910 read_lock_bh(&adapter_list_lock);
911 list_for_each_entry(adapter, &adapter_list, adapter_list) {
912 for_each_port(adapter, i) {
913 if (dev == adapter->port[i]) {
914 read_unlock_bh(&adapter_list_lock);
915 return 1;
916 }
917 }
918 }
919 read_unlock_bh(&adapter_list_lock);
920 return 0;
921}
922
923void cxgb_neigh_update(struct neighbour *neigh)
924{
925 struct net_device *dev = neigh->dev;
926
927 if (dev && (is_offloading(dev))) {
928 struct t3cdev *tdev = T3CDEV(dev);
929
930 BUG_ON(!tdev);
931 t3_l2t_update(tdev, neigh);
932 }
933}
934
935static void set_l2t_ix(struct t3cdev *tdev, u32 tid, struct l2t_entry *e)
936{
937 struct sk_buff *skb;
938 struct cpl_set_tcb_field *req;
939
940 skb = alloc_skb(sizeof(*req), GFP_ATOMIC);
941 if (!skb) {
942 printk(KERN_ERR "%s: cannot allocate skb!\n", __FUNCTION__);
943 return;
944 }
945 skb->priority = CPL_PRIORITY_CONTROL;
946 req = (struct cpl_set_tcb_field *)skb_put(skb, sizeof(*req));
947 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
948 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid));
949 req->reply = 0;
950 req->cpu_idx = 0;
951 req->word = htons(W_TCB_L2T_IX);
952 req->mask = cpu_to_be64(V_TCB_L2T_IX(M_TCB_L2T_IX));
953 req->val = cpu_to_be64(V_TCB_L2T_IX(e->idx));
954 tdev->send(tdev, skb);
955}
956
957void cxgb_redirect(struct dst_entry *old, struct dst_entry *new)
958{
959 struct net_device *olddev, *newdev;
960 struct tid_info *ti;
961 struct t3cdev *tdev;
962 u32 tid;
963 int update_tcb;
964 struct l2t_entry *e;
965 struct t3c_tid_entry *te;
966
967 olddev = old->neighbour->dev;
968 newdev = new->neighbour->dev;
969 if (!is_offloading(olddev))
970 return;
971 if (!is_offloading(newdev)) {
972 printk(KERN_WARNING "%s: Redirect to non-offload"
973 "device ignored.\n", __FUNCTION__);
974 return;
975 }
976 tdev = T3CDEV(olddev);
977 BUG_ON(!tdev);
978 if (tdev != T3CDEV(newdev)) {
979 printk(KERN_WARNING "%s: Redirect to different "
980 "offload device ignored.\n", __FUNCTION__);
981 return;
982 }
983
984 /* Add new L2T entry */
985 e = t3_l2t_get(tdev, new->neighbour, newdev);
986 if (!e) {
987 printk(KERN_ERR "%s: couldn't allocate new l2t entry!\n",
988 __FUNCTION__);
989 return;
990 }
991
992 /* Walk tid table and notify clients of dst change. */
993 ti = &(T3C_DATA(tdev))->tid_maps;
994 for (tid = 0; tid < ti->ntids; tid++) {
995 te = lookup_tid(ti, tid);
996 BUG_ON(!te);
606fcd0b 997 if (te && te->ctx && te->client && te->client->redirect) {
4d22de3e
DLR		 998 update_tcb = te->client->redirect(te->ctx, old, new, e);
999 if (update_tcb) {
1000 l2t_hold(L2DATA(tdev), e);
1001 set_l2t_ix(tdev, tid, e);
1002 }
1003 }
1004 }
1005 l2t_release(L2DATA(tdev), e);
1006}
1007
1008/*
1009 * Allocate a chunk of memory using kmalloc or, if that fails, vmalloc.
1010 * The allocated memory is cleared.
1011 */
1012void *cxgb_alloc_mem(unsigned long size)
1013{
1014 void *p = kmalloc(size, GFP_KERNEL);
1015
1016 if (!p)
1017 p = vmalloc(size);
1018 if (p)
1019 memset(p, 0, size);
1020 return p;
1021}
1022
1023/*
1024 * Free memory allocated through t3_alloc_mem().
1025 */
1026void cxgb_free_mem(void *addr)
1027{
1028 unsigned long p = (unsigned long)addr;
1029
1030 if (p >= VMALLOC_START && p < VMALLOC_END)
1031 vfree(addr);
1032 else
1033 kfree(addr);
1034}
1035
1036/*
1037 * Allocate and initialize the TID tables. Returns 0 on success.
1038 */
1039static int init_tid_tabs(struct tid_info *t, unsigned int ntids,
1040 unsigned int natids, unsigned int nstids,
1041 unsigned int atid_base, unsigned int stid_base)
1042{
1043 unsigned long size = ntids * sizeof(*t->tid_tab) +
1044 natids * sizeof(*t->atid_tab) + nstids * sizeof(*t->stid_tab);
1045
1046 t->tid_tab = cxgb_alloc_mem(size);
1047 if (!t->tid_tab)
1048 return -ENOMEM;
1049
1050 t->stid_tab = (union listen_entry *)&t->tid_tab[ntids];
1051 t->atid_tab = (union active_open_entry *)&t->stid_tab[nstids];
1052 t->ntids = ntids;
1053 t->nstids = nstids;
1054 t->stid_base = stid_base;
1055 t->sfree = NULL;
1056 t->natids = natids;
1057 t->atid_base = atid_base;
1058 t->afree = NULL;
1059 t->stids_in_use = t->atids_in_use = 0;
1060 atomic_set(&t->tids_in_use, 0);
1061 spin_lock_init(&t->stid_lock);
1062 spin_lock_init(&t->atid_lock);
1063
1064 /*
1065 * Setup the free lists for stid_tab and atid_tab.
1066 */
1067 if (nstids) {
1068 while (--nstids)
1069 t->stid_tab[nstids - 1].next = &t->stid_tab[nstids];
1070 t->sfree = t->stid_tab;
1071 }
1072 if (natids) {
1073 while (--natids)
1074 t->atid_tab[natids - 1].next = &t->atid_tab[natids];
1075 t->afree = t->atid_tab;
1076 }
1077 return 0;
1078}
1079
1080static void free_tid_maps(struct tid_info *t)
1081{
1082 cxgb_free_mem(t->tid_tab);
1083}
1084
1085static inline void add_adapter(struct adapter *adap)
1086{
1087 write_lock_bh(&adapter_list_lock);
1088 list_add_tail(&adap->adapter_list, &adapter_list);
1089 write_unlock_bh(&adapter_list_lock);
1090}
1091
1092static inline void remove_adapter(struct adapter *adap)
1093{
1094 write_lock_bh(&adapter_list_lock);
1095 list_del(&adap->adapter_list);
1096 write_unlock_bh(&adapter_list_lock);
1097}
1098
1099int cxgb3_offload_activate(struct adapter *adapter)
1100{
1101 struct t3cdev *dev = &adapter->tdev;
1102 int natids, err;
1103 struct t3c_data *t;
1104 struct tid_range stid_range, tid_range;
1105 struct mtutab mtutab;
1106 unsigned int l2t_capacity;
1107
1108 t = kcalloc(1, sizeof(*t), GFP_KERNEL);
1109 if (!t)
1110 return -ENOMEM;
1111
1112 err = -EOPNOTSUPP;
1113 if (dev->ctl(dev, GET_TX_MAX_CHUNK, &t->tx_max_chunk) < 0 ||
1114 dev->ctl(dev, GET_MAX_OUTSTANDING_WR, &t->max_wrs) < 0 ||
1115 dev->ctl(dev, GET_L2T_CAPACITY, &l2t_capacity) < 0 ||
1116 dev->ctl(dev, GET_MTUS, &mtutab) < 0 ||
1117 dev->ctl(dev, GET_TID_RANGE, &tid_range) < 0 ||
1118 dev->ctl(dev, GET_STID_RANGE, &stid_range) < 0)
1119 goto out_free;
1120
1121 err = -ENOMEM;
1122 L2DATA(dev) = t3_init_l2t(l2t_capacity);
1123 if (!L2DATA(dev))
1124 goto out_free;
1125
1126 natids = min(tid_range.num / 2, MAX_ATIDS);
1127 err = init_tid_tabs(&t->tid_maps, tid_range.num, natids,
1128 stid_range.num, ATID_BASE, stid_range.base);
1129 if (err)
1130 goto out_free_l2t;
1131
1132 t->mtus = mtutab.mtus;
1133 t->nmtus = mtutab.size;
1134
1135 INIT_WORK(&t->tid_release_task, t3_process_tid_release_list);
1136 spin_lock_init(&t->tid_release_lock);
1137 INIT_LIST_HEAD(&t->list_node);
1138 t->dev = dev;
1139
1140 T3C_DATA(dev) = t;
1141 dev->recv = process_rx;
1142 dev->neigh_update = t3_l2t_update;
1143
1144 /* Register netevent handler once */
1145 if (list_empty(&adapter_list))
1146 register_netevent_notifier(&nb);
1147
1148 add_adapter(adapter);
1149 return 0;
1150
1151out_free_l2t:
1152 t3_free_l2t(L2DATA(dev));
1153 L2DATA(dev) = NULL;
1154out_free:
1155 kfree(t);
1156 return err;
1157}
1158
1159void cxgb3_offload_deactivate(struct adapter *adapter)
1160{
1161 struct t3cdev *tdev = &adapter->tdev;
1162 struct t3c_data *t = T3C_DATA(tdev);
1163
1164 remove_adapter(adapter);
1165 if (list_empty(&adapter_list))
1166 unregister_netevent_notifier(&nb);
1167
1168 free_tid_maps(&t->tid_maps);
1169 T3C_DATA(tdev) = NULL;
1170 t3_free_l2t(L2DATA(tdev));
1171 L2DATA(tdev) = NULL;
1172 kfree(t);
1173}
1174
1175static inline void register_tdev(struct t3cdev *tdev)
1176{
1177 static int unit;
1178
1179 mutex_lock(&cxgb3_db_lock);
1180 snprintf(tdev->name, sizeof(tdev->name), "ofld_dev%d", unit++);
1181 list_add_tail(&tdev->ofld_dev_list, &ofld_dev_list);
1182 mutex_unlock(&cxgb3_db_lock);
1183}
1184
1185static inline void unregister_tdev(struct t3cdev *tdev)
1186{
1187 mutex_lock(&cxgb3_db_lock);
1188 list_del(&tdev->ofld_dev_list);
1189 mutex_unlock(&cxgb3_db_lock);
1190}
1191
1192void __devinit cxgb3_adapter_ofld(struct adapter *adapter)
1193{
1194 struct t3cdev *tdev = &adapter->tdev;
1195
1196 INIT_LIST_HEAD(&tdev->ofld_dev_list);
1197
1198 cxgb3_set_dummy_ops(tdev);
1199 tdev->send = t3_offload_tx;
1200 tdev->ctl = cxgb_offload_ctl;
1201 tdev->type = adapter->params.rev == 0 ? T3A : T3B;
1202
1203 register_tdev(tdev);
1204}
1205
1206void __devexit cxgb3_adapter_unofld(struct adapter *adapter)
1207{
1208 struct t3cdev *tdev = &adapter->tdev;
1209
1210 tdev->recv = NULL;
1211 tdev->neigh_update = NULL;
1212
1213 unregister_tdev(tdev);
1214}
1215
1216void __init cxgb3_offload_init(void)
1217{
1218 int i;
1219
1220 for (i = 0; i < NUM_CPL_CMDS; ++i)
1221 cpl_handlers[i] = do_bad_cpl;
1222
1223 t3_register_cpl_handler(CPL_SMT_WRITE_RPL, do_smt_write_rpl);
1224 t3_register_cpl_handler(CPL_L2T_WRITE_RPL, do_l2t_write_rpl);
1225 t3_register_cpl_handler(CPL_PASS_OPEN_RPL, do_stid_rpl);
1226 t3_register_cpl_handler(CPL_CLOSE_LISTSRV_RPL, do_stid_rpl);
1227 t3_register_cpl_handler(CPL_PASS_ACCEPT_REQ, do_cr);
1228 t3_register_cpl_handler(CPL_PASS_ESTABLISH, do_hwtid_rpl);
1229 t3_register_cpl_handler(CPL_ABORT_RPL_RSS, do_hwtid_rpl);
1230 t3_register_cpl_handler(CPL_ABORT_RPL, do_hwtid_rpl);
1231 t3_register_cpl_handler(CPL_RX_URG_NOTIFY, do_hwtid_rpl);
1232 t3_register_cpl_handler(CPL_RX_DATA, do_hwtid_rpl);
1233 t3_register_cpl_handler(CPL_TX_DATA_ACK, do_hwtid_rpl);
1234 t3_register_cpl_handler(CPL_TX_DMA_ACK, do_hwtid_rpl);
1235 t3_register_cpl_handler(CPL_ACT_OPEN_RPL, do_act_open_rpl);
1236 t3_register_cpl_handler(CPL_PEER_CLOSE, do_hwtid_rpl);
1237 t3_register_cpl_handler(CPL_CLOSE_CON_RPL, do_hwtid_rpl);
1238 t3_register_cpl_handler(CPL_ABORT_REQ_RSS, do_abort_req_rss);
1239 t3_register_cpl_handler(CPL_ACT_ESTABLISH, do_act_establish);
6cdbd77e
DLR		 1240 t3_register_cpl_handler(CPL_SET_TCB_RPL, do_hwtid_rpl);
1241 t3_register_cpl_handler(CPL_GET_TCB_RPL, do_hwtid_rpl);
4d22de3e
DLR		 1242 t3_register_cpl_handler(CPL_RDMA_TERMINATE, do_term);
1243 t3_register_cpl_handler(CPL_RDMA_EC_STATUS, do_hwtid_rpl);
1244 t3_register_cpl_handler(CPL_TRACE_PKT, do_trace);
1245 t3_register_cpl_handler(CPL_RX_DATA_DDP, do_hwtid_rpl);
1246 t3_register_cpl_handler(CPL_RX_DDP_COMPLETE, do_hwtid_rpl);
1247 t3_register_cpl_handler(CPL_ISCSI_HDR, do_hwtid_rpl);
1248}
Linux 6.x block layer and io_uring tree(s)