1 /* QLogic qed NIC Driver
2 * Copyright (c) 2015-2017 QLogic Corporation
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
32 #include <linux/if_ether.h>
33 #include <linux/if_vlan.h>
35 #include <linux/ipv6.h>
36 #include <linux/spinlock.h>
37 #include <linux/tcp.h>
42 #include "qed_reg_addr.h"
45 #define QED_IWARP_ORD_DEFAULT 32
46 #define QED_IWARP_IRD_DEFAULT 32
47 #define QED_IWARP_MAX_FW_MSS 4120
49 #define QED_EP_SIG 0xecabcdef
56 #define MPA_V2_PEER2PEER_MODEL 0x8000
57 #define MPA_V2_SEND_RTR 0x4000 /* on ird */
58 #define MPA_V2_READ_RTR 0x4000 /* on ord */
59 #define MPA_V2_WRITE_RTR 0x8000
60 #define MPA_V2_IRD_ORD_MASK 0x3FFF
62 #define MPA_REV2(_mpa_rev) ((_mpa_rev) == MPA_NEGOTIATION_TYPE_ENHANCED)
64 #define QED_IWARP_INVALID_TCP_CID 0xffffffff
65 #define QED_IWARP_RCV_WND_SIZE_DEF (256 * 1024)
66 #define QED_IWARP_RCV_WND_SIZE_MIN (64 * 1024)
67 #define TIMESTAMP_HEADER_SIZE (12)
69 #define QED_IWARP_TS_EN BIT(0)
70 #define QED_IWARP_DA_EN BIT(1)
71 #define QED_IWARP_PARAM_CRC_NEEDED (1)
72 #define QED_IWARP_PARAM_P2P (1)
74 static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn,
75 u8 fw_event_code, u16 echo,
76 union event_ring_data *data,
79 /* Override devinfo with iWARP specific values */
80 void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn)
82 struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev;
84 dev->max_inline = IWARP_REQ_MAX_INLINE_DATA_SIZE;
85 dev->max_qp = min_t(u32,
87 p_hwfn->p_rdma_info->num_qps) -
88 QED_IWARP_PREALLOC_CNT;
90 dev->max_cq = dev->max_qp;
92 dev->max_qp_resp_rd_atomic_resc = QED_IWARP_IRD_DEFAULT;
93 dev->max_qp_req_rd_atomic_resc = QED_IWARP_ORD_DEFAULT;
96 void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
98 p_hwfn->rdma_prs_search_reg = PRS_REG_SEARCH_TCP;
99 qed_wr(p_hwfn, p_ptt, p_hwfn->rdma_prs_search_reg, 1);
100 p_hwfn->b_rdma_enabled_in_prs = true;
103 /* We have two cid maps, one for tcp which should be used only from passive
104 * syn processing and replacing a pre-allocated ep in the list. The second
105 * for active tcp and for QPs.
107 static void qed_iwarp_cid_cleaned(struct qed_hwfn *p_hwfn, u32 cid)
109 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
111 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
113 if (cid < QED_IWARP_PREALLOC_CNT)
114 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map,
117 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid);
119 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
122 static int qed_iwarp_alloc_cid(struct qed_hwfn *p_hwfn, u32 *cid)
126 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
127 rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid);
128 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
130 DP_NOTICE(p_hwfn, "Failed in allocating iwarp cid\n");
133 *cid += qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
135 rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, *cid);
137 qed_iwarp_cid_cleaned(p_hwfn, *cid);
142 static void qed_iwarp_set_tcp_cid(struct qed_hwfn *p_hwfn, u32 cid)
144 cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
146 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
147 qed_bmap_set_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, cid);
148 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
151 /* This function allocates a cid for passive tcp (called from syn receive)
152 * the reason it's separate from the regular cid allocation is because it
153 * is assured that these cids already have ilt allocated. They are preallocated
154 * to ensure that we won't need to allocate memory during syn processing
156 static int qed_iwarp_alloc_tcp_cid(struct qed_hwfn *p_hwfn, u32 *cid)
160 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
162 rc = qed_rdma_bmap_alloc_id(p_hwfn,
163 &p_hwfn->p_rdma_info->tcp_cid_map, cid);
165 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
168 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
169 "can't allocate iwarp tcp cid max-count=%d\n",
170 p_hwfn->p_rdma_info->tcp_cid_map.max_count);
172 *cid = QED_IWARP_INVALID_TCP_CID;
176 *cid += qed_cxt_get_proto_cid_start(p_hwfn,
177 p_hwfn->p_rdma_info->proto);
181 int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn,
182 struct qed_rdma_qp *qp,
183 struct qed_rdma_create_qp_out_params *out_params)
185 struct iwarp_create_qp_ramrod_data *p_ramrod;
186 struct qed_sp_init_data init_data;
187 struct qed_spq_entry *p_ent;
192 qp->shared_queue = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
193 IWARP_SHARED_QUEUE_PAGE_SIZE,
194 &qp->shared_queue_phys_addr,
196 if (!qp->shared_queue)
199 out_params->sq_pbl_virt = (u8 *)qp->shared_queue +
200 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET;
201 out_params->sq_pbl_phys = qp->shared_queue_phys_addr +
202 IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET;
203 out_params->rq_pbl_virt = (u8 *)qp->shared_queue +
204 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET;
205 out_params->rq_pbl_phys = qp->shared_queue_phys_addr +
206 IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET;
208 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
214 memset(&init_data, 0, sizeof(init_data));
215 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
216 init_data.cid = qp->icid;
217 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
219 rc = qed_sp_init_request(p_hwfn, &p_ent,
220 IWARP_RAMROD_CMD_ID_CREATE_QP,
221 PROTOCOLID_IWARP, &init_data);
225 p_ramrod = &p_ent->ramrod.iwarp_create_qp;
227 SET_FIELD(p_ramrod->flags,
228 IWARP_CREATE_QP_RAMROD_DATA_FMR_AND_RESERVED_EN,
229 qp->fmr_and_reserved_lkey);
231 SET_FIELD(p_ramrod->flags,
232 IWARP_CREATE_QP_RAMROD_DATA_SIGNALED_COMP, qp->signal_all);
234 SET_FIELD(p_ramrod->flags,
235 IWARP_CREATE_QP_RAMROD_DATA_RDMA_RD_EN,
236 qp->incoming_rdma_read_en);
238 SET_FIELD(p_ramrod->flags,
239 IWARP_CREATE_QP_RAMROD_DATA_RDMA_WR_EN,
240 qp->incoming_rdma_write_en);
242 SET_FIELD(p_ramrod->flags,
243 IWARP_CREATE_QP_RAMROD_DATA_ATOMIC_EN,
244 qp->incoming_atomic_en);
246 SET_FIELD(p_ramrod->flags,
247 IWARP_CREATE_QP_RAMROD_DATA_SRQ_FLG, qp->use_srq);
249 p_ramrod->pd = qp->pd;
250 p_ramrod->sq_num_pages = qp->sq_num_pages;
251 p_ramrod->rq_num_pages = qp->rq_num_pages;
253 p_ramrod->qp_handle_for_cqe.hi = cpu_to_le32(qp->qp_handle.hi);
254 p_ramrod->qp_handle_for_cqe.lo = cpu_to_le32(qp->qp_handle.lo);
256 p_ramrod->cq_cid_for_sq =
257 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->sq_cq_id);
258 p_ramrod->cq_cid_for_rq =
259 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->rq_cq_id);
261 p_ramrod->dpi = cpu_to_le16(qp->dpi);
263 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
264 p_ramrod->physical_q0 = cpu_to_le16(physical_queue);
265 physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
266 p_ramrod->physical_q1 = cpu_to_le16(physical_queue);
268 rc = qed_spq_post(p_hwfn, p_ent, NULL);
275 qed_iwarp_cid_cleaned(p_hwfn, cid);
277 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
278 IWARP_SHARED_QUEUE_PAGE_SIZE,
279 qp->shared_queue, qp->shared_queue_phys_addr);
284 static int qed_iwarp_modify_fw(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
286 struct iwarp_modify_qp_ramrod_data *p_ramrod;
287 struct qed_sp_init_data init_data;
288 struct qed_spq_entry *p_ent;
292 memset(&init_data, 0, sizeof(init_data));
293 init_data.cid = qp->icid;
294 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
295 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
297 rc = qed_sp_init_request(p_hwfn, &p_ent,
298 IWARP_RAMROD_CMD_ID_MODIFY_QP,
299 p_hwfn->p_rdma_info->proto, &init_data);
303 p_ramrod = &p_ent->ramrod.iwarp_modify_qp;
304 SET_FIELD(p_ramrod->flags, IWARP_MODIFY_QP_RAMROD_DATA_STATE_TRANS_EN,
306 if (qp->iwarp_state == QED_IWARP_QP_STATE_CLOSING)
307 p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_CLOSING;
309 p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_ERROR;
311 rc = qed_spq_post(p_hwfn, p_ent, NULL);
313 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x)rc=%d\n", qp->icid, rc);
318 enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state)
321 case QED_ROCE_QP_STATE_RESET:
322 case QED_ROCE_QP_STATE_INIT:
323 case QED_ROCE_QP_STATE_RTR:
324 return QED_IWARP_QP_STATE_IDLE;
325 case QED_ROCE_QP_STATE_RTS:
326 return QED_IWARP_QP_STATE_RTS;
327 case QED_ROCE_QP_STATE_SQD:
328 return QED_IWARP_QP_STATE_CLOSING;
329 case QED_ROCE_QP_STATE_ERR:
330 return QED_IWARP_QP_STATE_ERROR;
331 case QED_ROCE_QP_STATE_SQE:
332 return QED_IWARP_QP_STATE_TERMINATE;
334 return QED_IWARP_QP_STATE_ERROR;
338 static enum qed_roce_qp_state
339 qed_iwarp2roce_state(enum qed_iwarp_qp_state state)
342 case QED_IWARP_QP_STATE_IDLE:
343 return QED_ROCE_QP_STATE_INIT;
344 case QED_IWARP_QP_STATE_RTS:
345 return QED_ROCE_QP_STATE_RTS;
346 case QED_IWARP_QP_STATE_TERMINATE:
347 return QED_ROCE_QP_STATE_SQE;
348 case QED_IWARP_QP_STATE_CLOSING:
349 return QED_ROCE_QP_STATE_SQD;
350 case QED_IWARP_QP_STATE_ERROR:
351 return QED_ROCE_QP_STATE_ERR;
353 return QED_ROCE_QP_STATE_ERR;
357 const char *iwarp_state_names[] = {
366 qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn,
367 struct qed_rdma_qp *qp,
368 enum qed_iwarp_qp_state new_state, bool internal)
370 enum qed_iwarp_qp_state prev_iw_state;
371 bool modify_fw = false;
374 /* modify QP can be called from upper-layer or as a result of async
375 * RST/FIN... therefore need to protect
377 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
378 prev_iw_state = qp->iwarp_state;
380 if (prev_iw_state == new_state) {
381 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
385 switch (prev_iw_state) {
386 case QED_IWARP_QP_STATE_IDLE:
388 case QED_IWARP_QP_STATE_RTS:
389 qp->iwarp_state = QED_IWARP_QP_STATE_RTS;
391 case QED_IWARP_QP_STATE_ERROR:
392 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR;
400 case QED_IWARP_QP_STATE_RTS:
402 case QED_IWARP_QP_STATE_CLOSING:
406 qp->iwarp_state = QED_IWARP_QP_STATE_CLOSING;
408 case QED_IWARP_QP_STATE_ERROR:
411 qp->iwarp_state = QED_IWARP_QP_STATE_ERROR;
417 case QED_IWARP_QP_STATE_ERROR:
419 case QED_IWARP_QP_STATE_IDLE:
421 qp->iwarp_state = new_state;
423 case QED_IWARP_QP_STATE_CLOSING:
424 /* could happen due to race... do nothing.... */
430 case QED_IWARP_QP_STATE_TERMINATE:
431 case QED_IWARP_QP_STATE_CLOSING:
432 qp->iwarp_state = new_state;
438 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) %s --> %s%s\n",
440 iwarp_state_names[prev_iw_state],
441 iwarp_state_names[qp->iwarp_state],
442 internal ? "internal" : "");
444 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock);
447 rc = qed_iwarp_modify_fw(p_hwfn, qp);
452 int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
454 struct qed_sp_init_data init_data;
455 struct qed_spq_entry *p_ent;
459 memset(&init_data, 0, sizeof(init_data));
460 init_data.cid = qp->icid;
461 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
462 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
464 rc = qed_sp_init_request(p_hwfn, &p_ent,
465 IWARP_RAMROD_CMD_ID_DESTROY_QP,
466 p_hwfn->p_rdma_info->proto, &init_data);
470 rc = qed_spq_post(p_hwfn, p_ent, NULL);
472 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) rc = %d\n", qp->icid, rc);
477 static void qed_iwarp_destroy_ep(struct qed_hwfn *p_hwfn,
478 struct qed_iwarp_ep *ep,
479 bool remove_from_active_list)
481 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
482 sizeof(*ep->ep_buffer_virt),
483 ep->ep_buffer_virt, ep->ep_buffer_phys);
485 if (remove_from_active_list) {
486 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
487 list_del(&ep->list_entry);
488 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
497 int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
499 struct qed_iwarp_ep *ep = qp->ep;
503 if (qp->iwarp_state != QED_IWARP_QP_STATE_ERROR) {
504 rc = qed_iwarp_modify_qp(p_hwfn, qp,
505 QED_IWARP_QP_STATE_ERROR, false);
510 /* Make sure ep is closed before returning and freeing memory. */
512 while (ep->state != QED_IWARP_EP_CLOSED && wait_count++ < 200)
515 if (ep->state != QED_IWARP_EP_CLOSED)
516 DP_NOTICE(p_hwfn, "ep state close timeout state=%x\n",
519 qed_iwarp_destroy_ep(p_hwfn, ep, false);
522 rc = qed_iwarp_fw_destroy(p_hwfn, qp);
524 if (qp->shared_queue)
525 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
526 IWARP_SHARED_QUEUE_PAGE_SIZE,
527 qp->shared_queue, qp->shared_queue_phys_addr);
533 qed_iwarp_create_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep **ep_out)
535 struct qed_iwarp_ep *ep;
538 ep = kzalloc(sizeof(*ep), GFP_KERNEL);
542 ep->state = QED_IWARP_EP_INIT;
544 ep->ep_buffer_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
545 sizeof(*ep->ep_buffer_virt),
548 if (!ep->ep_buffer_virt) {
553 ep->sig = QED_EP_SIG;
565 qed_iwarp_print_tcp_ramrod(struct qed_hwfn *p_hwfn,
566 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod)
568 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "local_mac=%x %x %x, remote_mac=%x %x %x\n",
569 p_tcp_ramrod->tcp.local_mac_addr_lo,
570 p_tcp_ramrod->tcp.local_mac_addr_mid,
571 p_tcp_ramrod->tcp.local_mac_addr_hi,
572 p_tcp_ramrod->tcp.remote_mac_addr_lo,
573 p_tcp_ramrod->tcp.remote_mac_addr_mid,
574 p_tcp_ramrod->tcp.remote_mac_addr_hi);
576 if (p_tcp_ramrod->tcp.ip_version == TCP_IPV4) {
577 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
578 "local_ip=%pI4h:%x, remote_ip=%pI4h%x, vlan=%x\n",
579 p_tcp_ramrod->tcp.local_ip,
580 p_tcp_ramrod->tcp.local_port,
581 p_tcp_ramrod->tcp.remote_ip,
582 p_tcp_ramrod->tcp.remote_port,
583 p_tcp_ramrod->tcp.vlan_id);
585 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
586 "local_ip=%pI6h:%x, remote_ip=%pI6h:%x, vlan=%x\n",
587 p_tcp_ramrod->tcp.local_ip,
588 p_tcp_ramrod->tcp.local_port,
589 p_tcp_ramrod->tcp.remote_ip,
590 p_tcp_ramrod->tcp.remote_port,
591 p_tcp_ramrod->tcp.vlan_id);
594 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
595 "flow_label=%x, ttl=%x, tos_or_tc=%x, mss=%x, rcv_wnd_scale=%x, connect_mode=%x, flags=%x\n",
596 p_tcp_ramrod->tcp.flow_label,
597 p_tcp_ramrod->tcp.ttl,
598 p_tcp_ramrod->tcp.tos_or_tc,
599 p_tcp_ramrod->tcp.mss,
600 p_tcp_ramrod->tcp.rcv_wnd_scale,
601 p_tcp_ramrod->tcp.connect_mode,
602 p_tcp_ramrod->tcp.flags);
604 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "syn_ip_payload_length=%x, lo=%x, hi=%x\n",
605 p_tcp_ramrod->tcp.syn_ip_payload_length,
606 p_tcp_ramrod->tcp.syn_phy_addr_lo,
607 p_tcp_ramrod->tcp.syn_phy_addr_hi);
611 qed_iwarp_tcp_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
613 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
614 struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod;
615 struct tcp_offload_params_opt2 *tcp;
616 struct qed_sp_init_data init_data;
617 struct qed_spq_entry *p_ent;
618 dma_addr_t async_output_phys;
619 dma_addr_t in_pdata_phys;
625 memset(&init_data, 0, sizeof(init_data));
626 init_data.cid = ep->tcp_cid;
627 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
628 if (ep->connect_mode == TCP_CONNECT_PASSIVE)
629 init_data.comp_mode = QED_SPQ_MODE_CB;
631 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
633 rc = qed_sp_init_request(p_hwfn, &p_ent,
634 IWARP_RAMROD_CMD_ID_TCP_OFFLOAD,
635 PROTOCOLID_IWARP, &init_data);
639 p_tcp_ramrod = &p_ent->ramrod.iwarp_tcp_offload;
641 in_pdata_phys = ep->ep_buffer_phys +
642 offsetof(struct qed_iwarp_ep_memory, in_pdata);
643 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.incoming_ulp_buffer.addr,
646 p_tcp_ramrod->iwarp.incoming_ulp_buffer.len =
647 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata));
649 async_output_phys = ep->ep_buffer_phys +
650 offsetof(struct qed_iwarp_ep_memory, async_output);
651 DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.async_eqe_output_buf,
654 p_tcp_ramrod->iwarp.handle_for_async.hi = cpu_to_le32(PTR_HI(ep));
655 p_tcp_ramrod->iwarp.handle_for_async.lo = cpu_to_le32(PTR_LO(ep));
657 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
658 p_tcp_ramrod->iwarp.physical_q0 = cpu_to_le16(physical_q);
659 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
660 p_tcp_ramrod->iwarp.physical_q1 = cpu_to_le16(physical_q);
661 p_tcp_ramrod->iwarp.mpa_mode = iwarp_info->mpa_rev;
663 tcp = &p_tcp_ramrod->tcp;
664 qed_set_fw_mac_addr(&tcp->remote_mac_addr_hi,
665 &tcp->remote_mac_addr_mid,
666 &tcp->remote_mac_addr_lo, ep->remote_mac_addr);
667 qed_set_fw_mac_addr(&tcp->local_mac_addr_hi, &tcp->local_mac_addr_mid,
668 &tcp->local_mac_addr_lo, ep->local_mac_addr);
670 tcp->vlan_id = cpu_to_le16(ep->cm_info.vlan);
672 tcp_flags = p_hwfn->p_rdma_info->iwarp.tcp_flags;
674 SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_TS_EN,
675 !!(tcp_flags & QED_IWARP_TS_EN));
677 SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_DA_EN,
678 !!(tcp_flags & QED_IWARP_DA_EN));
680 tcp->ip_version = ep->cm_info.ip_version;
682 for (i = 0; i < 4; i++) {
683 tcp->remote_ip[i] = cpu_to_le32(ep->cm_info.remote_ip[i]);
684 tcp->local_ip[i] = cpu_to_le32(ep->cm_info.local_ip[i]);
687 tcp->remote_port = cpu_to_le16(ep->cm_info.remote_port);
688 tcp->local_port = cpu_to_le16(ep->cm_info.local_port);
689 tcp->mss = cpu_to_le16(ep->mss);
694 tcp->rcv_wnd_scale = (u8)p_hwfn->p_rdma_info->iwarp.rcv_wnd_scale;
695 tcp->connect_mode = ep->connect_mode;
697 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
698 tcp->syn_ip_payload_length =
699 cpu_to_le16(ep->syn_ip_payload_length);
700 tcp->syn_phy_addr_hi = DMA_HI_LE(ep->syn_phy_addr);
701 tcp->syn_phy_addr_lo = DMA_LO_LE(ep->syn_phy_addr);
704 qed_iwarp_print_tcp_ramrod(p_hwfn, p_tcp_ramrod);
706 rc = qed_spq_post(p_hwfn, p_ent, NULL);
708 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
709 "EP(0x%x) Offload completed rc=%d\n", ep->tcp_cid, rc);
715 qed_iwarp_mpa_received(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
717 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
718 struct qed_iwarp_cm_event_params params;
719 struct mpa_v2_hdr *mpa_v2;
720 union async_output *async_data;
721 u16 mpa_ord, mpa_ird;
725 async_data = &ep->ep_buffer_virt->async_output;
727 mpa_rev = async_data->mpa_request.mpa_handshake_mode;
728 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
729 "private_data_len=%x handshake_mode=%x private_data=(%x)\n",
730 async_data->mpa_request.ulp_data_len,
731 mpa_rev, *((u32 *)(ep->ep_buffer_virt->in_pdata)));
733 if (mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
734 /* Read ord/ird values from private data buffer */
735 mpa_v2 = (struct mpa_v2_hdr *)ep->ep_buffer_virt->in_pdata;
736 mpa_hdr_size = sizeof(*mpa_v2);
738 mpa_ord = ntohs(mpa_v2->ord);
739 mpa_ird = ntohs(mpa_v2->ird);
741 /* Temprary store in cm_info incoming ord/ird requested, later
742 * replace with negotiated value during accept
744 ep->cm_info.ord = (u8)min_t(u16,
745 (mpa_ord & MPA_V2_IRD_ORD_MASK),
746 QED_IWARP_ORD_DEFAULT);
748 ep->cm_info.ird = (u8)min_t(u16,
749 (mpa_ird & MPA_V2_IRD_ORD_MASK),
750 QED_IWARP_IRD_DEFAULT);
752 /* Peer2Peer negotiation */
753 ep->rtr_type = MPA_RTR_TYPE_NONE;
754 if (mpa_ird & MPA_V2_PEER2PEER_MODEL) {
755 if (mpa_ord & MPA_V2_WRITE_RTR)
756 ep->rtr_type |= MPA_RTR_TYPE_ZERO_WRITE;
758 if (mpa_ord & MPA_V2_READ_RTR)
759 ep->rtr_type |= MPA_RTR_TYPE_ZERO_READ;
761 if (mpa_ird & MPA_V2_SEND_RTR)
762 ep->rtr_type |= MPA_RTR_TYPE_ZERO_SEND;
764 ep->rtr_type &= iwarp_info->rtr_type;
766 /* if we're left with no match send our capabilities */
767 if (ep->rtr_type == MPA_RTR_TYPE_NONE)
768 ep->rtr_type = iwarp_info->rtr_type;
771 ep->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED;
773 ep->cm_info.ord = QED_IWARP_ORD_DEFAULT;
774 ep->cm_info.ird = QED_IWARP_IRD_DEFAULT;
775 ep->mpa_rev = MPA_NEGOTIATION_TYPE_BASIC;
778 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
779 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x rtr:0x%x ulp_data_len = %x mpa_hdr_size = %x\n",
780 mpa_rev, ep->cm_info.ord, ep->cm_info.ird, ep->rtr_type,
781 async_data->mpa_request.ulp_data_len, mpa_hdr_size);
783 /* Strip mpa v2 hdr from private data before sending to upper layer */
784 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_hdr_size;
786 ep->cm_info.private_data_len = async_data->mpa_request.ulp_data_len -
789 params.event = QED_IWARP_EVENT_MPA_REQUEST;
790 params.cm_info = &ep->cm_info;
791 params.ep_context = ep;
794 ep->state = QED_IWARP_EP_MPA_REQ_RCVD;
795 ep->event_cb(ep->cb_context, ¶ms);
799 qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
801 struct iwarp_mpa_offload_ramrod_data *p_mpa_ramrod;
802 struct qed_sp_init_data init_data;
803 dma_addr_t async_output_phys;
804 struct qed_spq_entry *p_ent;
805 dma_addr_t out_pdata_phys;
806 dma_addr_t in_pdata_phys;
807 struct qed_rdma_qp *qp;
817 memset(&init_data, 0, sizeof(init_data));
818 init_data.cid = reject ? ep->tcp_cid : qp->icid;
819 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
821 if (ep->connect_mode == TCP_CONNECT_ACTIVE)
822 init_data.comp_mode = QED_SPQ_MODE_CB;
824 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
826 rc = qed_sp_init_request(p_hwfn, &p_ent,
827 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD,
828 PROTOCOLID_IWARP, &init_data);
832 p_mpa_ramrod = &p_ent->ramrod.iwarp_mpa_offload;
833 out_pdata_phys = ep->ep_buffer_phys +
834 offsetof(struct qed_iwarp_ep_memory, out_pdata);
835 DMA_REGPAIR_LE(p_mpa_ramrod->common.outgoing_ulp_buffer.addr,
837 p_mpa_ramrod->common.outgoing_ulp_buffer.len =
838 ep->cm_info.private_data_len;
839 p_mpa_ramrod->common.crc_needed = p_hwfn->p_rdma_info->iwarp.crc_needed;
841 p_mpa_ramrod->common.out_rq.ord = ep->cm_info.ord;
842 p_mpa_ramrod->common.out_rq.ird = ep->cm_info.ird;
844 p_mpa_ramrod->tcp_cid = p_hwfn->hw_info.opaque_fid << 16 | ep->tcp_cid;
846 in_pdata_phys = ep->ep_buffer_phys +
847 offsetof(struct qed_iwarp_ep_memory, in_pdata);
848 p_mpa_ramrod->tcp_connect_side = ep->connect_mode;
849 DMA_REGPAIR_LE(p_mpa_ramrod->incoming_ulp_buffer.addr,
851 p_mpa_ramrod->incoming_ulp_buffer.len =
852 cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata));
853 async_output_phys = ep->ep_buffer_phys +
854 offsetof(struct qed_iwarp_ep_memory, async_output);
855 DMA_REGPAIR_LE(p_mpa_ramrod->async_eqe_output_buf,
857 p_mpa_ramrod->handle_for_async.hi = cpu_to_le32(PTR_HI(ep));
858 p_mpa_ramrod->handle_for_async.lo = cpu_to_le32(PTR_LO(ep));
861 DMA_REGPAIR_LE(p_mpa_ramrod->shared_queue_addr,
862 qp->shared_queue_phys_addr);
863 p_mpa_ramrod->stats_counter_id =
864 RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) + qp->stats_queue;
866 p_mpa_ramrod->common.reject = 1;
869 p_mpa_ramrod->mode = ep->mpa_rev;
870 SET_FIELD(p_mpa_ramrod->rtr_pref,
871 IWARP_MPA_OFFLOAD_RAMROD_DATA_RTR_SUPPORTED, ep->rtr_type);
873 ep->state = QED_IWARP_EP_MPA_OFFLOADED;
874 rc = qed_spq_post(p_hwfn, p_ent, NULL);
876 ep->cid = qp->icid; /* Now they're migrated. */
880 "QP(0x%x) EP(0x%x) MPA Offload rc = %d IRD=0x%x ORD=0x%x rtr_type=%d mpa_rev=%d reject=%d\n",
881 reject ? 0xffff : qp->icid,
885 ep->cm_info.ord, ep->rtr_type, ep->mpa_rev, reject);
890 qed_iwarp_return_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
892 ep->state = QED_IWARP_EP_INIT;
896 memset(&ep->cm_info, 0, sizeof(ep->cm_info));
898 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) {
899 /* We don't care about the return code, it's ok if tcp_cid
900 * remains invalid...in this case we'll defer allocation
902 qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid);
904 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
906 list_del(&ep->list_entry);
907 list_add_tail(&ep->list_entry,
908 &p_hwfn->p_rdma_info->iwarp.ep_free_list);
910 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
914 qed_iwarp_parse_private_data(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
916 struct mpa_v2_hdr *mpa_v2_params;
917 union async_output *async_data;
918 u16 mpa_ird, mpa_ord;
919 u8 mpa_data_size = 0;
921 if (MPA_REV2(p_hwfn->p_rdma_info->iwarp.mpa_rev)) {
923 (struct mpa_v2_hdr *)(ep->ep_buffer_virt->in_pdata);
924 mpa_data_size = sizeof(*mpa_v2_params);
925 mpa_ird = ntohs(mpa_v2_params->ird);
926 mpa_ord = ntohs(mpa_v2_params->ord);
928 ep->cm_info.ird = (u8)(mpa_ord & MPA_V2_IRD_ORD_MASK);
929 ep->cm_info.ord = (u8)(mpa_ird & MPA_V2_IRD_ORD_MASK);
931 async_data = &ep->ep_buffer_virt->async_output;
933 ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_data_size;
934 ep->cm_info.private_data_len = async_data->mpa_response.ulp_data_len -
939 qed_iwarp_mpa_reply_arrived(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
941 struct qed_iwarp_cm_event_params params;
943 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
945 "MPA reply event not expected on passive side!\n");
949 params.event = QED_IWARP_EVENT_ACTIVE_MPA_REPLY;
951 qed_iwarp_parse_private_data(p_hwfn, ep);
953 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
954 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n",
955 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird);
957 params.cm_info = &ep->cm_info;
958 params.ep_context = ep;
961 ep->mpa_reply_processed = true;
963 ep->event_cb(ep->cb_context, ¶ms);
966 #define QED_IWARP_CONNECT_MODE_STRING(ep) \
967 ((ep)->connect_mode == TCP_CONNECT_PASSIVE) ? "Passive" : "Active"
969 /* Called as a result of the event:
970 * IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE
973 qed_iwarp_mpa_complete(struct qed_hwfn *p_hwfn,
974 struct qed_iwarp_ep *ep, u8 fw_return_code)
976 struct qed_iwarp_cm_event_params params;
978 if (ep->connect_mode == TCP_CONNECT_ACTIVE)
979 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE;
981 params.event = QED_IWARP_EVENT_PASSIVE_COMPLETE;
983 if (ep->connect_mode == TCP_CONNECT_ACTIVE && !ep->mpa_reply_processed)
984 qed_iwarp_parse_private_data(p_hwfn, ep);
986 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
987 "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n",
988 ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird);
990 params.cm_info = &ep->cm_info;
992 params.ep_context = ep;
994 ep->state = QED_IWARP_EP_CLOSED;
996 switch (fw_return_code) {
998 ep->qp->max_rd_atomic_req = ep->cm_info.ord;
999 ep->qp->max_rd_atomic_resp = ep->cm_info.ird;
1000 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_RTS, 1);
1001 ep->state = QED_IWARP_EP_ESTABLISHED;
1004 case IWARP_CONN_ERROR_MPA_TIMEOUT:
1005 DP_NOTICE(p_hwfn, "%s(0x%x) MPA timeout\n",
1006 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1007 params.status = -EBUSY;
1009 case IWARP_CONN_ERROR_MPA_ERROR_REJECT:
1010 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Reject\n",
1011 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1012 params.status = -ECONNREFUSED;
1014 case IWARP_CONN_ERROR_MPA_RST:
1015 DP_NOTICE(p_hwfn, "%s(0x%x) MPA reset(tcp cid: 0x%x)\n",
1016 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid,
1018 params.status = -ECONNRESET;
1020 case IWARP_CONN_ERROR_MPA_FIN:
1021 DP_NOTICE(p_hwfn, "%s(0x%x) MPA received FIN\n",
1022 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1023 params.status = -ECONNREFUSED;
1025 case IWARP_CONN_ERROR_MPA_INSUF_IRD:
1026 DP_NOTICE(p_hwfn, "%s(0x%x) MPA insufficient ird\n",
1027 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1028 params.status = -ECONNREFUSED;
1030 case IWARP_CONN_ERROR_MPA_RTR_MISMATCH:
1031 DP_NOTICE(p_hwfn, "%s(0x%x) MPA RTR MISMATCH\n",
1032 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1033 params.status = -ECONNREFUSED;
1035 case IWARP_CONN_ERROR_MPA_INVALID_PACKET:
1036 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n",
1037 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1038 params.status = -ECONNREFUSED;
1040 case IWARP_CONN_ERROR_MPA_LOCAL_ERROR:
1041 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Local Error\n",
1042 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1043 params.status = -ECONNREFUSED;
1045 case IWARP_CONN_ERROR_MPA_TERMINATE:
1046 DP_NOTICE(p_hwfn, "%s(0x%x) MPA TERMINATE\n",
1047 QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
1048 params.status = -ECONNREFUSED;
1051 params.status = -ECONNRESET;
1055 ep->event_cb(ep->cb_context, ¶ms);
1057 /* on passive side, if there is no associated QP (REJECT) we need to
1058 * return the ep to the pool, (in the regular case we add an element
1059 * in accept instead of this one.
1060 * In both cases we need to remove it from the ep_list.
1062 if (fw_return_code != RDMA_RETURN_OK) {
1063 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
1064 if ((ep->connect_mode == TCP_CONNECT_PASSIVE) &&
1065 (!ep->qp)) { /* Rejected */
1066 qed_iwarp_return_ep(p_hwfn, ep);
1068 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1069 list_del(&ep->list_entry);
1070 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1076 qed_iwarp_mpa_v2_set_private(struct qed_hwfn *p_hwfn,
1077 struct qed_iwarp_ep *ep, u8 *mpa_data_size)
1079 struct mpa_v2_hdr *mpa_v2_params;
1080 u16 mpa_ird, mpa_ord;
1083 if (MPA_REV2(ep->mpa_rev)) {
1085 (struct mpa_v2_hdr *)ep->ep_buffer_virt->out_pdata;
1086 *mpa_data_size = sizeof(*mpa_v2_params);
1088 mpa_ird = (u16)ep->cm_info.ird;
1089 mpa_ord = (u16)ep->cm_info.ord;
1091 if (ep->rtr_type != MPA_RTR_TYPE_NONE) {
1092 mpa_ird |= MPA_V2_PEER2PEER_MODEL;
1094 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_SEND)
1095 mpa_ird |= MPA_V2_SEND_RTR;
1097 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_WRITE)
1098 mpa_ord |= MPA_V2_WRITE_RTR;
1100 if (ep->rtr_type & MPA_RTR_TYPE_ZERO_READ)
1101 mpa_ord |= MPA_V2_READ_RTR;
1104 mpa_v2_params->ird = htons(mpa_ird);
1105 mpa_v2_params->ord = htons(mpa_ord);
1109 "MPA_NEGOTIATE Header: [%x ord:%x ird] %x ord:%x ird:%x peer2peer:%x rtr_send:%x rtr_write:%x rtr_read:%x\n",
1112 *((u32 *)mpa_v2_params),
1113 mpa_ord & MPA_V2_IRD_ORD_MASK,
1114 mpa_ird & MPA_V2_IRD_ORD_MASK,
1115 !!(mpa_ird & MPA_V2_PEER2PEER_MODEL),
1116 !!(mpa_ird & MPA_V2_SEND_RTR),
1117 !!(mpa_ord & MPA_V2_WRITE_RTR),
1118 !!(mpa_ord & MPA_V2_READ_RTR));
1122 int qed_iwarp_connect(void *rdma_cxt,
1123 struct qed_iwarp_connect_in *iparams,
1124 struct qed_iwarp_connect_out *oparams)
1126 struct qed_hwfn *p_hwfn = rdma_cxt;
1127 struct qed_iwarp_info *iwarp_info;
1128 struct qed_iwarp_ep *ep;
1129 u8 mpa_data_size = 0;
1134 if ((iparams->cm_info.ord > QED_IWARP_ORD_DEFAULT) ||
1135 (iparams->cm_info.ird > QED_IWARP_IRD_DEFAULT)) {
1137 "QP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n",
1138 iparams->qp->icid, iparams->cm_info.ord,
1139 iparams->cm_info.ird);
1144 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1146 /* Allocate ep object */
1147 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
1151 rc = qed_iwarp_create_ep(p_hwfn, &ep);
1157 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1158 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list);
1159 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1161 ep->qp = iparams->qp;
1163 ether_addr_copy(ep->remote_mac_addr, iparams->remote_mac_addr);
1164 ether_addr_copy(ep->local_mac_addr, iparams->local_mac_addr);
1165 memcpy(&ep->cm_info, &iparams->cm_info, sizeof(ep->cm_info));
1167 ep->cm_info.ord = iparams->cm_info.ord;
1168 ep->cm_info.ird = iparams->cm_info.ird;
1170 ep->rtr_type = iwarp_info->rtr_type;
1171 if (!iwarp_info->peer2peer)
1172 ep->rtr_type = MPA_RTR_TYPE_NONE;
1174 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && (ep->cm_info.ord == 0))
1175 ep->cm_info.ord = 1;
1177 ep->mpa_rev = iwarp_info->mpa_rev;
1179 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1181 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1182 ep->cm_info.private_data_len = iparams->cm_info.private_data_len +
1185 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1186 iparams->cm_info.private_data,
1187 iparams->cm_info.private_data_len);
1189 if (p_hwfn->p_rdma_info->iwarp.tcp_flags & QED_IWARP_TS_EN)
1190 ts_hdr_size = TIMESTAMP_HEADER_SIZE;
1192 ep->mss = iparams->mss - ts_hdr_size;
1193 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss);
1195 ep->event_cb = iparams->event_cb;
1196 ep->cb_context = iparams->cb_context;
1197 ep->connect_mode = TCP_CONNECT_ACTIVE;
1199 oparams->ep_context = ep;
1201 rc = qed_iwarp_tcp_offload(p_hwfn, ep);
1203 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x) rc = %d\n",
1204 iparams->qp->icid, ep->tcp_cid, rc);
1207 qed_iwarp_destroy_ep(p_hwfn, ep, true);
1213 qed_iwarp_cid_cleaned(p_hwfn, cid);
1218 static struct qed_iwarp_ep *qed_iwarp_get_free_ep(struct qed_hwfn *p_hwfn)
1220 struct qed_iwarp_ep *ep = NULL;
1223 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1225 if (list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) {
1226 DP_ERR(p_hwfn, "Ep list is empty\n");
1230 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list,
1231 struct qed_iwarp_ep, list_entry);
1233 /* in some cases we could have failed allocating a tcp cid when added
1234 * from accept / failure... retry now..this is not the common case.
1236 if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) {
1237 rc = qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid);
1239 /* if we fail we could look for another entry with a valid
1240 * tcp_cid, but since we don't expect to reach this anyway
1241 * it's not worth the handling
1244 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
1250 list_del(&ep->list_entry);
1253 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1257 #define QED_IWARP_MAX_CID_CLEAN_TIME 100
1258 #define QED_IWARP_MAX_NO_PROGRESS_CNT 5
1260 /* This function waits for all the bits of a bmap to be cleared, as long as
1261 * there is progress ( i.e. the number of bits left to be cleared decreases )
1262 * the function continues.
1265 qed_iwarp_wait_cid_map_cleared(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap)
1267 int prev_weight = 0;
1271 weight = bitmap_weight(bmap->bitmap, bmap->max_count);
1272 prev_weight = weight;
1275 msleep(QED_IWARP_MAX_CID_CLEAN_TIME);
1277 weight = bitmap_weight(bmap->bitmap, bmap->max_count);
1279 if (prev_weight == weight) {
1282 prev_weight = weight;
1286 if (wait_count > QED_IWARP_MAX_NO_PROGRESS_CNT) {
1288 "%s bitmap wait timed out (%d cids pending)\n",
1289 bmap->name, weight);
1296 static int qed_iwarp_wait_for_all_cids(struct qed_hwfn *p_hwfn)
1301 rc = qed_iwarp_wait_cid_map_cleared(p_hwfn,
1302 &p_hwfn->p_rdma_info->tcp_cid_map);
1306 /* Now free the tcp cids from the main cid map */
1307 for (i = 0; i < QED_IWARP_PREALLOC_CNT; i++)
1308 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, i);
1310 /* Now wait for all cids to be completed */
1311 return qed_iwarp_wait_cid_map_cleared(p_hwfn,
1312 &p_hwfn->p_rdma_info->cid_map);
1315 static void qed_iwarp_free_prealloc_ep(struct qed_hwfn *p_hwfn)
1317 struct qed_iwarp_ep *ep;
1319 while (!list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) {
1320 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1322 ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list,
1323 struct qed_iwarp_ep, list_entry);
1326 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1329 list_del(&ep->list_entry);
1331 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1333 if (ep->tcp_cid != QED_IWARP_INVALID_TCP_CID)
1334 qed_iwarp_cid_cleaned(p_hwfn, ep->tcp_cid);
1336 qed_iwarp_destroy_ep(p_hwfn, ep, false);
1340 static int qed_iwarp_prealloc_ep(struct qed_hwfn *p_hwfn, bool init)
1342 struct qed_iwarp_ep *ep;
1348 count = init ? QED_IWARP_PREALLOC_CNT : 1;
1349 for (i = 0; i < count; i++) {
1350 rc = qed_iwarp_create_ep(p_hwfn, &ep);
1354 /* During initialization we allocate from the main pool,
1355 * afterwards we allocate only from the tcp_cid.
1358 rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
1361 qed_iwarp_set_tcp_cid(p_hwfn, cid);
1363 /* We don't care about the return code, it's ok if
1364 * tcp_cid remains invalid...in this case we'll
1367 qed_iwarp_alloc_tcp_cid(p_hwfn, &cid);
1372 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1373 list_add_tail(&ep->list_entry,
1374 &p_hwfn->p_rdma_info->iwarp.ep_free_list);
1375 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1381 qed_iwarp_destroy_ep(p_hwfn, ep, false);
1386 int qed_iwarp_alloc(struct qed_hwfn *p_hwfn)
1390 /* Allocate bitmap for tcp cid. These are used by passive side
1391 * to ensure it can allocate a tcp cid during dpc that was
1392 * pre-acquired and doesn't require dynamic allocation of ilt
1394 rc = qed_rdma_bmap_alloc(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map,
1395 QED_IWARP_PREALLOC_CNT, "TCP_CID");
1397 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1398 "Failed to allocate tcp cid, rc = %d\n", rc);
1402 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_free_list);
1403 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1405 return qed_iwarp_prealloc_ep(p_hwfn, true);
1408 void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn)
1410 qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1);
1413 int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams)
1415 struct qed_hwfn *p_hwfn = rdma_cxt;
1416 struct qed_iwarp_ep *ep;
1417 u8 mpa_data_size = 0;
1420 ep = iparams->ep_context;
1422 DP_ERR(p_hwfn, "Ep Context receive in accept is NULL\n");
1426 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n",
1427 iparams->qp->icid, ep->tcp_cid);
1429 if ((iparams->ord > QED_IWARP_ORD_DEFAULT) ||
1430 (iparams->ird > QED_IWARP_IRD_DEFAULT)) {
1433 "QP(0x%x) EP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n",
1435 ep->tcp_cid, iparams->ord, iparams->ord);
1439 qed_iwarp_prealloc_ep(p_hwfn, false);
1441 ep->cb_context = iparams->cb_context;
1442 ep->qp = iparams->qp;
1445 if (ep->mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
1446 /* Negotiate ord/ird: if upperlayer requested ord larger than
1447 * ird advertised by remote, we need to decrease our ord
1449 if (iparams->ord > ep->cm_info.ird)
1450 iparams->ord = ep->cm_info.ird;
1452 if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) &&
1453 (iparams->ird == 0))
1457 /* Update cm_info ord/ird to be negotiated values */
1458 ep->cm_info.ord = iparams->ord;
1459 ep->cm_info.ird = iparams->ird;
1461 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1463 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1464 ep->cm_info.private_data_len = iparams->private_data_len +
1467 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1468 iparams->private_data, iparams->private_data_len);
1470 rc = qed_iwarp_mpa_offload(p_hwfn, ep);
1472 qed_iwarp_modify_qp(p_hwfn,
1473 iparams->qp, QED_IWARP_QP_STATE_ERROR, 1);
1478 int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams)
1480 struct qed_hwfn *p_hwfn = rdma_cxt;
1481 struct qed_iwarp_ep *ep;
1482 u8 mpa_data_size = 0;
1484 ep = iparams->ep_context;
1486 DP_ERR(p_hwfn, "Ep Context receive in reject is NULL\n");
1490 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x)\n", ep->tcp_cid);
1492 ep->cb_context = iparams->cb_context;
1495 qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
1497 ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
1498 ep->cm_info.private_data_len = iparams->private_data_len +
1501 memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
1502 iparams->private_data, iparams->private_data_len);
1504 return qed_iwarp_mpa_offload(p_hwfn, ep);
1508 qed_iwarp_print_cm_info(struct qed_hwfn *p_hwfn,
1509 struct qed_iwarp_cm_info *cm_info)
1511 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "ip_version = %d\n",
1512 cm_info->ip_version);
1514 if (cm_info->ip_version == QED_TCP_IPV4)
1515 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1516 "remote_ip %pI4h:%x, local_ip %pI4h:%x vlan=%x\n",
1517 cm_info->remote_ip, cm_info->remote_port,
1518 cm_info->local_ip, cm_info->local_port,
1521 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1522 "remote_ip %pI6h:%x, local_ip %pI6h:%x vlan=%x\n",
1523 cm_info->remote_ip, cm_info->remote_port,
1524 cm_info->local_ip, cm_info->local_port,
1527 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
1528 "private_data_len = %x ord = %d, ird = %d\n",
1529 cm_info->private_data_len, cm_info->ord, cm_info->ird);
1533 qed_iwarp_ll2_post_rx(struct qed_hwfn *p_hwfn,
1534 struct qed_iwarp_ll2_buff *buf, u8 handle)
1538 rc = qed_ll2_post_rx_buffer(p_hwfn, handle, buf->data_phys_addr,
1539 (u16)buf->buff_size, buf, 1);
1542 "Failed to repost rx buffer to ll2 rc = %d, handle=%d\n",
1544 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buf->buff_size,
1545 buf->data, buf->data_phys_addr);
1553 qed_iwarp_ep_exists(struct qed_hwfn *p_hwfn, struct qed_iwarp_cm_info *cm_info)
1555 struct qed_iwarp_ep *ep = NULL;
1558 list_for_each_entry(ep,
1559 &p_hwfn->p_rdma_info->iwarp.ep_list,
1561 if ((ep->cm_info.local_port == cm_info->local_port) &&
1562 (ep->cm_info.remote_port == cm_info->remote_port) &&
1563 (ep->cm_info.vlan == cm_info->vlan) &&
1564 !memcmp(&ep->cm_info.local_ip, cm_info->local_ip,
1565 sizeof(cm_info->local_ip)) &&
1566 !memcmp(&ep->cm_info.remote_ip, cm_info->remote_ip,
1567 sizeof(cm_info->remote_ip))) {
1575 "SYN received on active connection - dropping\n");
1576 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1584 static struct qed_iwarp_listener *
1585 qed_iwarp_get_listener(struct qed_hwfn *p_hwfn,
1586 struct qed_iwarp_cm_info *cm_info)
1588 struct qed_iwarp_listener *listener = NULL;
1589 static const u32 ip_zero[4] = { 0, 0, 0, 0 };
1592 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1594 list_for_each_entry(listener,
1595 &p_hwfn->p_rdma_info->iwarp.listen_list,
1597 if (listener->port == cm_info->local_port) {
1598 if (!memcmp(listener->ip_addr,
1599 ip_zero, sizeof(ip_zero))) {
1604 if (!memcmp(listener->ip_addr,
1606 sizeof(cm_info->local_ip)) &&
1607 (listener->vlan == cm_info->vlan)) {
1615 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener found = %p\n",
1620 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener not found\n");
1625 qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn,
1626 struct qed_iwarp_cm_info *cm_info,
1628 u8 *remote_mac_addr,
1630 int *payload_len, int *tcp_start_offset)
1632 struct vlan_ethhdr *vethh;
1633 bool vlan_valid = false;
1634 struct ipv6hdr *ip6h;
1635 struct ethhdr *ethh;
1636 struct tcphdr *tcph;
1644 eth_type = ntohs(ethh->h_proto);
1645 if (eth_type == ETH_P_8021Q) {
1647 vethh = (struct vlan_ethhdr *)ethh;
1648 cm_info->vlan = ntohs(vethh->h_vlan_TCI) & VLAN_VID_MASK;
1649 eth_type = ntohs(vethh->h_vlan_encapsulated_proto);
1652 eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0);
1654 ether_addr_copy(remote_mac_addr, ethh->h_source);
1655 ether_addr_copy(local_mac_addr, ethh->h_dest);
1657 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_type =%d source mac: %pM\n",
1658 eth_type, ethh->h_source);
1660 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_hlen=%d destination mac: %pM\n",
1661 eth_hlen, ethh->h_dest);
1663 iph = (struct iphdr *)((u8 *)(ethh) + eth_hlen);
1665 if (eth_type == ETH_P_IP) {
1666 cm_info->local_ip[0] = ntohl(iph->daddr);
1667 cm_info->remote_ip[0] = ntohl(iph->saddr);
1668 cm_info->ip_version = TCP_IPV4;
1670 ip_hlen = (iph->ihl) * sizeof(u32);
1671 *payload_len = ntohs(iph->tot_len) - ip_hlen;
1672 } else if (eth_type == ETH_P_IPV6) {
1673 ip6h = (struct ipv6hdr *)iph;
1674 for (i = 0; i < 4; i++) {
1675 cm_info->local_ip[i] =
1676 ntohl(ip6h->daddr.in6_u.u6_addr32[i]);
1677 cm_info->remote_ip[i] =
1678 ntohl(ip6h->saddr.in6_u.u6_addr32[i]);
1680 cm_info->ip_version = TCP_IPV6;
1682 ip_hlen = sizeof(*ip6h);
1683 *payload_len = ntohs(ip6h->payload_len);
1685 DP_NOTICE(p_hwfn, "Unexpected ethertype on ll2 %x\n", eth_type);
1689 tcph = (struct tcphdr *)((u8 *)iph + ip_hlen);
1693 "Only SYN type packet expected on this ll2 conn, iph->ihl=%d source=%d dest=%d\n",
1694 iph->ihl, tcph->source, tcph->dest);
1698 cm_info->local_port = ntohs(tcph->dest);
1699 cm_info->remote_port = ntohs(tcph->source);
1701 qed_iwarp_print_cm_info(p_hwfn, cm_info);
1703 *tcp_start_offset = eth_hlen + ip_hlen;
1709 qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
1711 struct qed_iwarp_ll2_buff *buf = data->cookie;
1712 struct qed_iwarp_listener *listener;
1713 struct qed_ll2_tx_pkt_info tx_pkt;
1714 struct qed_iwarp_cm_info cm_info;
1715 struct qed_hwfn *p_hwfn = cxt;
1716 u8 remote_mac_addr[ETH_ALEN];
1717 u8 local_mac_addr[ETH_ALEN];
1718 struct qed_iwarp_ep *ep;
1719 int tcp_start_offset;
1726 memset(&cm_info, 0, sizeof(cm_info));
1727 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle;
1728 if (GET_FIELD(data->parse_flags,
1729 PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED) &&
1730 GET_FIELD(data->parse_flags, PARSING_AND_ERR_FLAGS_L4CHKSMERROR)) {
1731 DP_NOTICE(p_hwfn, "Syn packet received with checksum error\n");
1735 rc = qed_iwarp_parse_rx_pkt(p_hwfn, &cm_info, (u8 *)(buf->data) +
1736 data->u.placement_offset, remote_mac_addr,
1737 local_mac_addr, &payload_len,
1742 /* Check if there is a listener for this 4-tuple+vlan */
1743 listener = qed_iwarp_get_listener(p_hwfn, &cm_info);
1747 "SYN received on tuple not listened on parse_flags=%d packet len=%d\n",
1748 data->parse_flags, data->length.packet_length);
1750 memset(&tx_pkt, 0, sizeof(tx_pkt));
1751 tx_pkt.num_of_bds = 1;
1752 tx_pkt.vlan = data->vlan;
1754 if (GET_FIELD(data->parse_flags,
1755 PARSING_AND_ERR_FLAGS_TAG8021QEXIST))
1756 SET_FIELD(tx_pkt.bd_flags,
1757 CORE_TX_BD_DATA_VLAN_INSERTION, 1);
1759 tx_pkt.l4_hdr_offset_w = (data->length.packet_length) >> 2;
1760 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
1761 tx_pkt.first_frag = buf->data_phys_addr +
1762 data->u.placement_offset;
1763 tx_pkt.first_frag_len = data->length.packet_length;
1764 tx_pkt.cookie = buf;
1766 rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_syn_handle,
1771 "Can't post SYN back to chip rc=%d\n", rc);
1777 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Received syn on listening port\n");
1778 /* There may be an open ep on this connection if this is a syn
1779 * retrasnmit... need to make sure there isn't...
1781 if (qed_iwarp_ep_exists(p_hwfn, &cm_info))
1784 ep = qed_iwarp_get_free_ep(p_hwfn);
1788 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1789 list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list);
1790 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
1792 ether_addr_copy(ep->remote_mac_addr, remote_mac_addr);
1793 ether_addr_copy(ep->local_mac_addr, local_mac_addr);
1795 memcpy(&ep->cm_info, &cm_info, sizeof(ep->cm_info));
1797 if (p_hwfn->p_rdma_info->iwarp.tcp_flags & QED_IWARP_TS_EN)
1798 ts_hdr_size = TIMESTAMP_HEADER_SIZE;
1800 hdr_size = ((cm_info.ip_version == QED_TCP_IPV4) ? 40 : 60) +
1802 ep->mss = p_hwfn->p_rdma_info->iwarp.max_mtu - hdr_size;
1803 ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss);
1805 ep->event_cb = listener->event_cb;
1806 ep->cb_context = listener->cb_context;
1807 ep->connect_mode = TCP_CONNECT_PASSIVE;
1810 ep->syn_ip_payload_length = (u16)payload_len;
1811 ep->syn_phy_addr = buf->data_phys_addr + data->u.placement_offset +
1814 rc = qed_iwarp_tcp_offload(p_hwfn, ep);
1816 qed_iwarp_return_ep(p_hwfn, ep);
1822 qed_iwarp_ll2_post_rx(p_hwfn, buf, ll2_syn_handle);
1825 static void qed_iwarp_ll2_rel_rx_pkt(void *cxt, u8 connection_handle,
1826 void *cookie, dma_addr_t rx_buf_addr,
1829 struct qed_iwarp_ll2_buff *buffer = cookie;
1830 struct qed_hwfn *p_hwfn = cxt;
1832 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size,
1833 buffer->data, buffer->data_phys_addr);
1837 static void qed_iwarp_ll2_comp_tx_pkt(void *cxt, u8 connection_handle,
1838 void *cookie, dma_addr_t first_frag_addr,
1839 bool b_last_fragment, bool b_last_packet)
1841 struct qed_iwarp_ll2_buff *buffer = cookie;
1842 struct qed_hwfn *p_hwfn = cxt;
1844 /* this was originally an rx packet, post it back */
1845 qed_iwarp_ll2_post_rx(p_hwfn, buffer, connection_handle);
1848 static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle,
1849 void *cookie, dma_addr_t first_frag_addr,
1850 bool b_last_fragment, bool b_last_packet)
1852 struct qed_iwarp_ll2_buff *buffer = cookie;
1853 struct qed_hwfn *p_hwfn = cxt;
1858 dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size,
1859 buffer->data, buffer->data_phys_addr);
1864 static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
1866 struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1869 if (iwarp_info->ll2_syn_handle != QED_IWARP_HANDLE_INVAL) {
1870 rc = qed_ll2_terminate_connection(p_hwfn,
1871 iwarp_info->ll2_syn_handle);
1873 DP_INFO(p_hwfn, "Failed to terminate syn connection\n");
1875 qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_syn_handle);
1876 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL;
1879 qed_llh_remove_mac_filter(p_hwfn,
1880 p_ptt, p_hwfn->p_rdma_info->iwarp.mac_addr);
1885 qed_iwarp_ll2_alloc_buffers(struct qed_hwfn *p_hwfn,
1886 int num_rx_bufs, int buff_size, u8 ll2_handle)
1888 struct qed_iwarp_ll2_buff *buffer;
1892 for (i = 0; i < num_rx_bufs; i++) {
1893 buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
1899 buffer->data = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
1901 &buffer->data_phys_addr,
1903 if (!buffer->data) {
1909 buffer->buff_size = buff_size;
1910 rc = qed_iwarp_ll2_post_rx(p_hwfn, buffer, ll2_handle);
1912 /* buffers will be deallocated by qed_ll2 */
1918 #define QED_IWARP_MAX_BUF_SIZE(mtu) \
1919 ALIGN((mtu) + ETH_HLEN + 2 * VLAN_HLEN + 2 + ETH_CACHE_LINE_SIZE, \
1920 ETH_CACHE_LINE_SIZE)
1923 qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
1924 struct qed_rdma_start_in_params *params,
1925 struct qed_ptt *p_ptt)
1927 struct qed_iwarp_info *iwarp_info;
1928 struct qed_ll2_acquire_data data;
1929 struct qed_ll2_cbs cbs;
1932 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1933 iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL;
1935 iwarp_info->max_mtu = params->max_mtu;
1937 ether_addr_copy(p_hwfn->p_rdma_info->iwarp.mac_addr, params->mac_addr);
1939 rc = qed_llh_add_mac_filter(p_hwfn, p_ptt, params->mac_addr);
1943 /* Start SYN connection */
1944 cbs.rx_comp_cb = qed_iwarp_ll2_comp_syn_pkt;
1945 cbs.rx_release_cb = qed_iwarp_ll2_rel_rx_pkt;
1946 cbs.tx_comp_cb = qed_iwarp_ll2_comp_tx_pkt;
1947 cbs.tx_release_cb = qed_iwarp_ll2_rel_tx_pkt;
1948 cbs.cookie = p_hwfn;
1950 memset(&data, 0, sizeof(data));
1951 data.input.conn_type = QED_LL2_TYPE_IWARP;
1952 data.input.mtu = QED_IWARP_MAX_SYN_PKT_SIZE;
1953 data.input.rx_num_desc = QED_IWARP_LL2_SYN_RX_SIZE;
1954 data.input.tx_num_desc = QED_IWARP_LL2_SYN_TX_SIZE;
1955 data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */
1956 data.input.tx_tc = PKT_LB_TC;
1957 data.input.tx_dest = QED_LL2_TX_DEST_LB;
1958 data.p_connection_handle = &iwarp_info->ll2_syn_handle;
1961 rc = qed_ll2_acquire_connection(p_hwfn, &data);
1963 DP_NOTICE(p_hwfn, "Failed to acquire LL2 connection\n");
1964 qed_llh_remove_mac_filter(p_hwfn, p_ptt, params->mac_addr);
1968 rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_syn_handle);
1970 DP_NOTICE(p_hwfn, "Failed to establish LL2 connection\n");
1974 rc = qed_iwarp_ll2_alloc_buffers(p_hwfn,
1975 QED_IWARP_LL2_SYN_RX_SIZE,
1976 QED_IWARP_MAX_SYN_PKT_SIZE,
1977 iwarp_info->ll2_syn_handle);
1983 qed_iwarp_ll2_stop(p_hwfn, p_ptt);
1988 int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
1989 struct qed_rdma_start_in_params *params)
1991 struct qed_iwarp_info *iwarp_info;
1994 iwarp_info = &p_hwfn->p_rdma_info->iwarp;
1996 iwarp_info->tcp_flags = QED_IWARP_TS_EN;
1997 rcv_wnd_size = QED_IWARP_RCV_WND_SIZE_DEF;
1999 /* value 0 is used for ilog2(QED_IWARP_RCV_WND_SIZE_MIN) */
2000 iwarp_info->rcv_wnd_scale = ilog2(rcv_wnd_size) -
2001 ilog2(QED_IWARP_RCV_WND_SIZE_MIN);
2002 iwarp_info->crc_needed = QED_IWARP_PARAM_CRC_NEEDED;
2003 iwarp_info->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED;
2005 iwarp_info->peer2peer = QED_IWARP_PARAM_P2P;
2007 iwarp_info->rtr_type = MPA_RTR_TYPE_ZERO_SEND |
2008 MPA_RTR_TYPE_ZERO_WRITE |
2009 MPA_RTR_TYPE_ZERO_READ;
2011 spin_lock_init(&p_hwfn->p_rdma_info->iwarp.qp_lock);
2012 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_list);
2013 INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.listen_list);
2015 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_IWARP,
2016 qed_iwarp_async_event);
2018 return qed_iwarp_ll2_start(p_hwfn, params, p_ptt);
2021 int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
2025 qed_iwarp_free_prealloc_ep(p_hwfn);
2026 rc = qed_iwarp_wait_for_all_cids(p_hwfn);
2030 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_IWARP);
2032 return qed_iwarp_ll2_stop(p_hwfn, p_ptt);
2035 void qed_iwarp_qp_in_error(struct qed_hwfn *p_hwfn,
2036 struct qed_iwarp_ep *ep, u8 fw_return_code)
2038 struct qed_iwarp_cm_event_params params;
2040 qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_ERROR, true);
2042 params.event = QED_IWARP_EVENT_CLOSE;
2043 params.ep_context = ep;
2044 params.cm_info = &ep->cm_info;
2045 params.status = (fw_return_code == IWARP_QP_IN_ERROR_GOOD_CLOSE) ?
2048 ep->state = QED_IWARP_EP_CLOSED;
2049 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2050 list_del(&ep->list_entry);
2051 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2053 ep->event_cb(ep->cb_context, ¶ms);
2056 void qed_iwarp_exception_received(struct qed_hwfn *p_hwfn,
2057 struct qed_iwarp_ep *ep, int fw_ret_code)
2059 struct qed_iwarp_cm_event_params params;
2060 bool event_cb = false;
2062 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x) fw_ret_code=%d\n",
2063 ep->cid, fw_ret_code);
2065 switch (fw_ret_code) {
2066 case IWARP_EXCEPTION_DETECTED_LLP_CLOSED:
2068 params.event = QED_IWARP_EVENT_DISCONNECT;
2071 case IWARP_EXCEPTION_DETECTED_LLP_RESET:
2072 params.status = -ECONNRESET;
2073 params.event = QED_IWARP_EVENT_DISCONNECT;
2076 case IWARP_EXCEPTION_DETECTED_RQ_EMPTY:
2077 params.event = QED_IWARP_EVENT_RQ_EMPTY;
2080 case IWARP_EXCEPTION_DETECTED_IRQ_FULL:
2081 params.event = QED_IWARP_EVENT_IRQ_FULL;
2084 case IWARP_EXCEPTION_DETECTED_LLP_TIMEOUT:
2085 params.event = QED_IWARP_EVENT_LLP_TIMEOUT;
2088 case IWARP_EXCEPTION_DETECTED_REMOTE_PROTECTION_ERROR:
2089 params.event = QED_IWARP_EVENT_REMOTE_PROTECTION_ERROR;
2092 case IWARP_EXCEPTION_DETECTED_CQ_OVERFLOW:
2093 params.event = QED_IWARP_EVENT_CQ_OVERFLOW;
2096 case IWARP_EXCEPTION_DETECTED_LOCAL_CATASTROPHIC:
2097 params.event = QED_IWARP_EVENT_QP_CATASTROPHIC;
2100 case IWARP_EXCEPTION_DETECTED_LOCAL_ACCESS_ERROR:
2101 params.event = QED_IWARP_EVENT_LOCAL_ACCESS_ERROR;
2104 case IWARP_EXCEPTION_DETECTED_REMOTE_OPERATION_ERROR:
2105 params.event = QED_IWARP_EVENT_REMOTE_OPERATION_ERROR;
2108 case IWARP_EXCEPTION_DETECTED_TERMINATE_RECEIVED:
2109 params.event = QED_IWARP_EVENT_TERMINATE_RECEIVED;
2113 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2114 "Unhandled exception received...fw_ret_code=%d\n",
2120 params.ep_context = ep;
2121 params.cm_info = &ep->cm_info;
2122 ep->event_cb(ep->cb_context, ¶ms);
2127 qed_iwarp_tcp_connect_unsuccessful(struct qed_hwfn *p_hwfn,
2128 struct qed_iwarp_ep *ep, u8 fw_return_code)
2130 struct qed_iwarp_cm_event_params params;
2132 memset(¶ms, 0, sizeof(params));
2133 params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE;
2134 params.ep_context = ep;
2135 params.cm_info = &ep->cm_info;
2136 ep->state = QED_IWARP_EP_CLOSED;
2138 switch (fw_return_code) {
2139 case IWARP_CONN_ERROR_TCP_CONNECT_INVALID_PACKET:
2140 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2141 "%s(0x%x) TCP connect got invalid packet\n",
2142 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2143 params.status = -ECONNRESET;
2145 case IWARP_CONN_ERROR_TCP_CONNECTION_RST:
2146 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2147 "%s(0x%x) TCP Connection Reset\n",
2148 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2149 params.status = -ECONNRESET;
2151 case IWARP_CONN_ERROR_TCP_CONNECT_TIMEOUT:
2152 DP_NOTICE(p_hwfn, "%s(0x%x) TCP timeout\n",
2153 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2154 params.status = -EBUSY;
2156 case IWARP_CONN_ERROR_MPA_NOT_SUPPORTED_VER:
2157 DP_NOTICE(p_hwfn, "%s(0x%x) MPA not supported VER\n",
2158 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2159 params.status = -ECONNREFUSED;
2161 case IWARP_CONN_ERROR_MPA_INVALID_PACKET:
2162 DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n",
2163 QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
2164 params.status = -ECONNRESET;
2168 "%s(0x%x) Unexpected return code tcp connect: %d\n",
2169 QED_IWARP_CONNECT_MODE_STRING(ep),
2170 ep->tcp_cid, fw_return_code);
2171 params.status = -ECONNRESET;
2175 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
2176 ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
2177 qed_iwarp_return_ep(p_hwfn, ep);
2179 ep->event_cb(ep->cb_context, ¶ms);
2180 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2181 list_del(&ep->list_entry);
2182 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2187 qed_iwarp_connect_complete(struct qed_hwfn *p_hwfn,
2188 struct qed_iwarp_ep *ep, u8 fw_return_code)
2190 u8 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle;
2192 if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
2193 /* Done with the SYN packet, post back to ll2 rx */
2194 qed_iwarp_ll2_post_rx(p_hwfn, ep->syn, ll2_syn_handle);
2198 /* If connect failed - upper layer doesn't know about it */
2199 if (fw_return_code == RDMA_RETURN_OK)
2200 qed_iwarp_mpa_received(p_hwfn, ep);
2202 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep,
2205 if (fw_return_code == RDMA_RETURN_OK)
2206 qed_iwarp_mpa_offload(p_hwfn, ep);
2208 qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep,
2214 qed_iwarp_check_ep_ok(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
2216 if (!ep || (ep->sig != QED_EP_SIG)) {
2217 DP_ERR(p_hwfn, "ERROR ON ASYNC ep=%p\n", ep);
2224 static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn,
2225 u8 fw_event_code, u16 echo,
2226 union event_ring_data *data,
2229 struct regpair *fw_handle = &data->rdma_data.async_handle;
2230 struct qed_iwarp_ep *ep = NULL;
2233 ep = (struct qed_iwarp_ep *)(uintptr_t)HILO_64(fw_handle->hi,
2236 switch (fw_event_code) {
2237 case IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE:
2238 /* Async completion after TCP 3-way handshake */
2239 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
2243 "EP(0x%x) IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE fw_ret_code=%d\n",
2244 ep->tcp_cid, fw_return_code);
2245 qed_iwarp_connect_complete(p_hwfn, ep, fw_return_code);
2247 case IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED:
2248 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
2252 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED fw_ret_code=%d\n",
2253 ep->cid, fw_return_code);
2254 qed_iwarp_exception_received(p_hwfn, ep, fw_return_code);
2256 case IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE:
2257 /* Async completion for Close Connection ramrod */
2258 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
2262 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE fw_ret_code=%d\n",
2263 ep->cid, fw_return_code);
2264 qed_iwarp_qp_in_error(p_hwfn, ep, fw_return_code);
2266 case IWARP_EVENT_TYPE_ASYNC_ENHANCED_MPA_REPLY_ARRIVED:
2267 /* Async event for active side only */
2268 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
2272 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_MPA_REPLY_ARRIVED fw_ret_code=%d\n",
2273 ep->cid, fw_return_code);
2274 qed_iwarp_mpa_reply_arrived(p_hwfn, ep);
2276 case IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE:
2277 if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
2281 "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE fw_ret_code=%d\n",
2282 ep->cid, fw_return_code);
2283 qed_iwarp_mpa_complete(p_hwfn, ep, fw_return_code);
2285 case IWARP_EVENT_TYPE_ASYNC_CID_CLEANED:
2286 cid = (u16)le32_to_cpu(fw_handle->lo);
2287 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
2288 "(0x%x)IWARP_EVENT_TYPE_ASYNC_CID_CLEANED\n", cid);
2289 qed_iwarp_cid_cleaned(p_hwfn, cid);
2292 case IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW:
2293 DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW\n");
2295 p_hwfn->p_rdma_info->events.affiliated_event(
2296 p_hwfn->p_rdma_info->events.context,
2297 QED_IWARP_EVENT_CQ_OVERFLOW,
2301 DP_ERR(p_hwfn, "Received unexpected async iwarp event %d\n",
2309 qed_iwarp_create_listen(void *rdma_cxt,
2310 struct qed_iwarp_listen_in *iparams,
2311 struct qed_iwarp_listen_out *oparams)
2313 struct qed_hwfn *p_hwfn = rdma_cxt;
2314 struct qed_iwarp_listener *listener;
2316 listener = kzalloc(sizeof(*listener), GFP_KERNEL);
2320 listener->ip_version = iparams->ip_version;
2321 memcpy(listener->ip_addr, iparams->ip_addr, sizeof(listener->ip_addr));
2322 listener->port = iparams->port;
2323 listener->vlan = iparams->vlan;
2325 listener->event_cb = iparams->event_cb;
2326 listener->cb_context = iparams->cb_context;
2327 listener->max_backlog = iparams->max_backlog;
2328 oparams->handle = listener;
2330 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2331 list_add_tail(&listener->list_entry,
2332 &p_hwfn->p_rdma_info->iwarp.listen_list);
2333 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2337 "callback=%p handle=%p ip=%x:%x:%x:%x port=0x%x vlan=0x%x\n",
2340 listener->ip_addr[0],
2341 listener->ip_addr[1],
2342 listener->ip_addr[2],
2343 listener->ip_addr[3], listener->port, listener->vlan);
2348 int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle)
2350 struct qed_iwarp_listener *listener = handle;
2351 struct qed_hwfn *p_hwfn = rdma_cxt;
2353 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "handle=%p\n", handle);
2355 spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2356 list_del(&listener->list_entry);
2357 spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
2364 int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams)
2366 struct qed_hwfn *p_hwfn = rdma_cxt;
2367 struct qed_sp_init_data init_data;
2368 struct qed_spq_entry *p_ent;
2369 struct qed_iwarp_ep *ep;
2370 struct qed_rdma_qp *qp;
2373 ep = iparams->ep_context;
2375 DP_ERR(p_hwfn, "Ep Context receive in send_rtr is NULL\n");
2381 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n",
2382 qp->icid, ep->tcp_cid);
2384 memset(&init_data, 0, sizeof(init_data));
2385 init_data.cid = qp->icid;
2386 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
2387 init_data.comp_mode = QED_SPQ_MODE_CB;
2389 rc = qed_sp_init_request(p_hwfn, &p_ent,
2390 IWARP_RAMROD_CMD_ID_MPA_OFFLOAD_SEND_RTR,
2391 PROTOCOLID_IWARP, &init_data);
2396 rc = qed_spq_post(p_hwfn, p_ent, NULL);
2398 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = 0x%x\n", rc);
2404 qed_iwarp_query_qp(struct qed_rdma_qp *qp,
2405 struct qed_rdma_query_qp_out_params *out_params)
2407 out_params->state = qed_iwarp2roce_state(qp->iwarp_state);