2 * SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
4 * Copyright (c) 2015 - 2022 Intel Corporation
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8 * General Public License (GPL) Version 2, available from the file
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10 * OpenFabrics.org BSD license below:
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25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 #include "irdma_main.h"
38 static void irdma_cm_post_event(struct irdma_cm_event *event);
39 static void irdma_disconnect_worker(struct work_struct *work);
42 * irdma_free_sqbuf - put back puda buffer if refcount is 0
43 * @vsi: The VSI structure of the device
44 * @bufp: puda buffer to free
47 irdma_free_sqbuf(struct irdma_sc_vsi *vsi, void *bufp)
49 struct irdma_puda_buf *buf = bufp;
50 struct irdma_puda_rsrc *ilq = vsi->ilq;
52 if (atomic_dec_and_test(&buf->refcount))
53 irdma_puda_ret_bufpool(ilq, buf);
57 * irdma_record_ird_ord - Record IRD/ORD passed in
58 * @cm_node: connection's node
59 * @conn_ird: connection IRD
60 * @conn_ord: connection ORD
63 irdma_record_ird_ord(struct irdma_cm_node *cm_node, u32 conn_ird,
66 if (conn_ird > cm_node->dev->hw_attrs.max_hw_ird)
67 conn_ird = cm_node->dev->hw_attrs.max_hw_ird;
69 if (conn_ord > cm_node->dev->hw_attrs.max_hw_ord)
70 conn_ord = cm_node->dev->hw_attrs.max_hw_ord;
71 else if (!conn_ord && cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO)
73 cm_node->ird_size = conn_ird;
74 cm_node->ord_size = conn_ord;
78 * irdma_copy_ip_ntohl - copy IP address from network to host
79 * @dst: IP address in host order
80 * @src: IP address in network order (big endian)
83 irdma_copy_ip_ntohl(u32 *dst, __be32 *src)
85 *dst++ = ntohl(*src++);
86 *dst++ = ntohl(*src++);
87 *dst++ = ntohl(*src++);
92 * irdma_copy_ip_htonl - copy IP address from host to network order
93 * @dst: IP address in network order (big endian)
94 * @src: IP address in host order
97 irdma_copy_ip_htonl(__be32 *dst, u32 *src)
99 *dst++ = htonl(*src++);
100 *dst++ = htonl(*src++);
101 *dst++ = htonl(*src++);
106 * irdma_get_addr_info
107 * @cm_node: contains ip/tcp info
108 * @cm_info: to get a copy of the cm_node ip/tcp info
111 irdma_get_addr_info(struct irdma_cm_node *cm_node,
112 struct irdma_cm_info *cm_info)
114 memset(cm_info, 0, sizeof(*cm_info));
115 cm_info->ipv4 = cm_node->ipv4;
116 cm_info->vlan_id = cm_node->vlan_id;
117 memcpy(cm_info->loc_addr, cm_node->loc_addr, sizeof(cm_info->loc_addr));
118 memcpy(cm_info->rem_addr, cm_node->rem_addr, sizeof(cm_info->rem_addr));
119 cm_info->loc_port = cm_node->loc_port;
120 cm_info->rem_port = cm_node->rem_port;
124 * irdma_fill_sockaddr4 - fill in addr info for IPv4 connection
125 * @cm_node: connection's node
126 * @event: upper layer's cm event
129 irdma_fill_sockaddr4(struct irdma_cm_node *cm_node,
130 struct iw_cm_event *event)
132 struct sockaddr_in *laddr = (struct sockaddr_in *)&event->local_addr;
133 struct sockaddr_in *raddr = (struct sockaddr_in *)&event->remote_addr;
135 laddr->sin_family = AF_INET;
136 raddr->sin_family = AF_INET;
138 laddr->sin_port = htons(cm_node->loc_port);
139 raddr->sin_port = htons(cm_node->rem_port);
141 laddr->sin_addr.s_addr = htonl(cm_node->loc_addr[0]);
142 raddr->sin_addr.s_addr = htonl(cm_node->rem_addr[0]);
146 * irdma_fill_sockaddr6 - fill in addr info for IPv6 connection
147 * @cm_node: connection's node
148 * @event: upper layer's cm event
151 irdma_fill_sockaddr6(struct irdma_cm_node *cm_node,
152 struct iw_cm_event *event)
154 struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)&event->local_addr;
155 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)&event->remote_addr;
157 laddr6->sin6_family = AF_INET6;
158 raddr6->sin6_family = AF_INET6;
160 laddr6->sin6_port = htons(cm_node->loc_port);
161 raddr6->sin6_port = htons(cm_node->rem_port);
163 irdma_copy_ip_htonl(laddr6->sin6_addr.__u6_addr.__u6_addr32,
165 irdma_copy_ip_htonl(raddr6->sin6_addr.__u6_addr.__u6_addr32,
170 * irdma_get_cmevent_info - for cm event upcall
171 * @cm_node: connection's node
172 * @cm_id: upper layers cm struct for the event
173 * @event: upper layer's cm event
176 irdma_get_cmevent_info(struct irdma_cm_node *cm_node,
177 struct iw_cm_id *cm_id,
178 struct iw_cm_event *event)
180 memcpy(&event->local_addr, &cm_id->m_local_addr,
181 sizeof(event->local_addr));
182 memcpy(&event->remote_addr, &cm_id->m_remote_addr,
183 sizeof(event->remote_addr));
185 event->private_data = cm_node->pdata_buf;
186 event->private_data_len = (u8)cm_node->pdata.size;
187 event->ird = cm_node->ird_size;
188 event->ord = cm_node->ord_size;
193 * irdma_send_cm_event - upcall cm's event handler
194 * @cm_node: connection's node
195 * @cm_id: upper layer's cm info struct
196 * @type: Event type to indicate
197 * @status: status for the event type
200 irdma_send_cm_event(struct irdma_cm_node *cm_node,
201 struct iw_cm_id *cm_id,
202 enum iw_cm_event_type type, int status)
204 struct iw_cm_event event = {0};
207 event.status = status;
209 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
210 "cm_node %p cm_id=%p state=%d accel=%d event_type=%d status=%d\n",
211 cm_node, cm_id, cm_node->accelerated, cm_node->state, type, status);
214 case IW_CM_EVENT_CONNECT_REQUEST:
216 irdma_fill_sockaddr4(cm_node, &event);
218 irdma_fill_sockaddr6(cm_node, &event);
219 event.provider_data = cm_node;
220 event.private_data = cm_node->pdata_buf;
221 event.private_data_len = (u8)cm_node->pdata.size;
222 event.ird = cm_node->ird_size;
224 case IW_CM_EVENT_CONNECT_REPLY:
225 irdma_get_cmevent_info(cm_node, cm_id, &event);
227 case IW_CM_EVENT_ESTABLISHED:
228 event.ird = cm_node->ird_size;
229 event.ord = cm_node->ord_size;
231 case IW_CM_EVENT_DISCONNECT:
232 case IW_CM_EVENT_CLOSE:
233 /* Wait if we are in RTS but havent issued the iwcm event upcall */
234 if (!cm_node->accelerated)
235 wait_for_completion(&cm_node->establish_comp);
241 return cm_id->event_handler(cm_id, &event);
245 * irdma_timer_list_prep - add connection nodes to a list to perform timer tasks
246 * @cm_core: cm's core
247 * @timer_list: a timer list to which cm_node will be selected
250 irdma_timer_list_prep(struct irdma_cm_core *cm_core,
251 struct list_head *timer_list)
253 struct irdma_cm_node *cm_node;
256 HASH_FOR_EACH_RCU(cm_core->cm_hash_tbl, bkt, cm_node, list) {
257 if ((cm_node->close_entry || cm_node->send_entry) &&
258 atomic_inc_not_zero(&cm_node->refcnt))
259 list_add(&cm_node->timer_entry, timer_list);
264 * irdma_create_event - create cm event
265 * @cm_node: connection's node
266 * @type: Event type to generate
268 static struct irdma_cm_event *
269 irdma_create_event(struct irdma_cm_node *cm_node,
270 enum irdma_cm_event_type type)
272 struct irdma_cm_event *event;
277 event = kzalloc(sizeof(*event), GFP_ATOMIC);
283 event->cm_node = cm_node;
284 memcpy(event->cm_info.rem_addr, cm_node->rem_addr,
285 sizeof(event->cm_info.rem_addr));
286 memcpy(event->cm_info.loc_addr, cm_node->loc_addr,
287 sizeof(event->cm_info.loc_addr));
288 event->cm_info.rem_port = cm_node->rem_port;
289 event->cm_info.loc_port = cm_node->loc_port;
290 event->cm_info.cm_id = cm_node->cm_id;
291 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
292 "node=%p event=%p type=%u dst=%pI4 src=%pI4\n", cm_node,
293 event, type, event->cm_info.loc_addr,
294 event->cm_info.rem_addr);
295 irdma_cm_post_event(event);
301 * irdma_free_retrans_entry - free send entry
302 * @cm_node: connection's node
305 irdma_free_retrans_entry(struct irdma_cm_node *cm_node)
307 struct irdma_device *iwdev = cm_node->iwdev;
308 struct irdma_timer_entry *send_entry;
310 send_entry = cm_node->send_entry;
314 cm_node->send_entry = NULL;
315 irdma_free_sqbuf(&iwdev->vsi, send_entry->sqbuf);
317 atomic_dec(&cm_node->refcnt);
321 * irdma_cleanup_retrans_entry - free send entry with lock
322 * @cm_node: connection's node
325 irdma_cleanup_retrans_entry(struct irdma_cm_node *cm_node)
329 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
330 irdma_free_retrans_entry(cm_node);
331 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
335 * irdma_form_ah_cm_frame - get a free packet and build frame with address handle
336 * @cm_node: connection's node ionfo to use in frame
337 * @options: pointer to options info
338 * @hdr: pointer mpa header
339 * @pdata: pointer to private data
340 * @flags: indicates FIN or ACK
342 static struct irdma_puda_buf *
343 irdma_form_ah_cm_frame(struct irdma_cm_node *cm_node,
344 struct irdma_kmem_info *options,
345 struct irdma_kmem_info *hdr,
346 struct irdma_mpa_priv_info *pdata,
349 struct irdma_puda_buf *sqbuf;
350 struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi;
358 if (!cm_node->ah || !cm_node->ah->ah_info.ah_valid) {
359 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
364 sqbuf = irdma_puda_get_bufpool(vsi->ilq);
366 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
371 sqbuf->ah_id = cm_node->ah->ah_info.ah_idx;
374 opts_len = (u32)options->size;
380 pd_len = pdata->size;
382 pktsize = sizeof(*tcph) + opts_len + hdr_len + pd_len;
384 memset(buf, 0, pktsize);
386 sqbuf->totallen = pktsize;
387 sqbuf->tcphlen = sizeof(*tcph) + opts_len;
388 sqbuf->scratch = cm_node;
390 tcph = (struct tcphdr *)buf;
391 buf += sizeof(*tcph);
393 tcph->th_sport = htons(cm_node->loc_port);
394 tcph->th_dport = htons(cm_node->rem_port);
395 tcph->th_seq = htonl(cm_node->tcp_cntxt.loc_seq_num);
397 if (flags & SET_ACK) {
398 cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt;
399 tcph->th_ack = htonl(cm_node->tcp_cntxt.loc_ack_num);
400 tcph->th_flags |= TH_ACK;
405 if (flags & SET_SYN) {
406 cm_node->tcp_cntxt.loc_seq_num++;
407 tcph->th_flags |= TH_SYN;
409 cm_node->tcp_cntxt.loc_seq_num += hdr_len + pd_len;
412 if (flags & SET_FIN) {
413 cm_node->tcp_cntxt.loc_seq_num++;
414 tcph->th_flags |= TH_FIN;
418 tcph->th_flags |= TH_RST;
420 tcph->th_off = (u16)((sizeof(*tcph) + opts_len + 3) >> 2);
421 sqbuf->tcphlen = tcph->th_off << 2;
422 tcph->th_win = htons(cm_node->tcp_cntxt.rcv_wnd);
426 memcpy(buf, options->addr, opts_len);
431 memcpy(buf, hdr->addr, hdr_len);
435 if (pdata && pdata->addr)
436 memcpy(buf, pdata->addr, pdata->size);
438 atomic_set(&sqbuf->refcount, 1);
440 irdma_debug_buf(vsi->dev, IRDMA_DEBUG_ILQ, "TRANSMIT ILQ BUFFER",
441 sqbuf->mem.va, sqbuf->totallen);
447 * irdma_form_uda_cm_frame - get a free packet and build frame full tcpip packet
448 * @cm_node: connection's node ionfo to use in frame
449 * @options: pointer to options info
450 * @hdr: pointer mpa header
451 * @pdata: pointer to private data
452 * @flags: indicates FIN or ACK
454 static struct irdma_puda_buf *
455 irdma_form_uda_cm_frame(struct irdma_cm_node *cm_node,
456 struct irdma_kmem_info *options,
457 struct irdma_kmem_info *hdr,
458 struct irdma_mpa_priv_info *pdata,
461 struct irdma_puda_buf *sqbuf;
462 struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi;
467 struct ip6_hdr *ip6h;
468 struct ether_header *ethh;
470 u16 eth_hlen = ETH_HLEN;
477 sqbuf = irdma_puda_get_bufpool(vsi->ilq);
484 opts_len = (u32)options->size;
490 pd_len = pdata->size;
492 if (cm_node->vlan_id < VLAN_N_VID)
496 pktsize = sizeof(*iph) + sizeof(*tcph);
498 pktsize = sizeof(*ip6h) + sizeof(*tcph);
499 pktsize += opts_len + hdr_len + pd_len;
501 memset(buf, 0, eth_hlen + pktsize);
503 sqbuf->totallen = pktsize + eth_hlen;
504 sqbuf->maclen = eth_hlen;
505 sqbuf->tcphlen = sizeof(*tcph) + opts_len;
506 sqbuf->scratch = cm_node;
508 ethh = (struct ether_header *)buf;
512 sqbuf->do_lpb = true;
517 iph = (struct ip *)buf;
519 tcph = (struct tcphdr *)buf;
520 buf += sizeof(*tcph);
522 ether_addr_copy(ethh->ether_dhost, cm_node->rem_mac);
523 ether_addr_copy(ethh->ether_shost, cm_node->loc_mac);
524 if (cm_node->vlan_id < VLAN_N_VID) {
525 ((struct ether_vlan_header *)ethh)->evl_proto =
527 vtag = (cm_node->user_pri << VLAN_PRIO_SHIFT) |
529 ((struct ether_vlan_header *)ethh)->evl_tag = htons(vtag);
531 ((struct ether_vlan_header *)ethh)->evl_encap_proto =
534 ethh->ether_type = htons(ETH_P_IP);
537 iph->ip_v = IPVERSION;
538 iph->ip_hl = 5; /* 5 * 4Byte words, IP headr len */
539 iph->ip_tos = cm_node->tos;
540 iph->ip_len = htons(pktsize);
541 iph->ip_id = htons(++cm_node->tcp_cntxt.loc_id);
543 iph->ip_off = htons(0x4000);
545 iph->ip_p = IPPROTO_TCP;
546 iph->ip_src.s_addr = htonl(cm_node->loc_addr[0]);
547 iph->ip_dst.s_addr = htonl(cm_node->rem_addr[0]);
550 ip6h = (struct ip6_hdr *)buf;
551 buf += sizeof(*ip6h);
552 tcph = (struct tcphdr *)buf;
553 buf += sizeof(*tcph);
555 ether_addr_copy(ethh->ether_dhost, cm_node->rem_mac);
556 ether_addr_copy(ethh->ether_shost, cm_node->loc_mac);
557 if (cm_node->vlan_id < VLAN_N_VID) {
558 ((struct ether_vlan_header *)ethh)->evl_proto =
560 vtag = (cm_node->user_pri << VLAN_PRIO_SHIFT) |
562 ((struct ether_vlan_header *)ethh)->evl_tag = htons(vtag);
563 ((struct ether_vlan_header *)ethh)->evl_encap_proto =
566 ethh->ether_type = htons(ETH_P_IPV6);
568 ip6h->ip6_vfc = 6 << 4;
569 ip6h->ip6_vfc |= cm_node->tos >> 4;
570 ip6h->ip6_flow = cm_node->tos << 20;
571 ip6h->ip6_plen = htons(pktsize - sizeof(*ip6h));
573 ip6h->ip6_hops = 128;
574 irdma_copy_ip_htonl(ip6h->ip6_src.__u6_addr.__u6_addr32,
576 irdma_copy_ip_htonl(ip6h->ip6_dst.__u6_addr.__u6_addr32,
580 tcph->th_sport = htons(cm_node->loc_port);
581 tcph->th_dport = htons(cm_node->rem_port);
582 tcph->th_seq = htonl(cm_node->tcp_cntxt.loc_seq_num);
584 if (flags & SET_ACK) {
585 cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt;
586 tcph->th_ack = htonl(cm_node->tcp_cntxt.loc_ack_num);
587 tcph->th_flags |= TH_ACK;
592 if (flags & SET_SYN) {
593 cm_node->tcp_cntxt.loc_seq_num++;
594 tcph->th_flags |= TH_SYN;
596 cm_node->tcp_cntxt.loc_seq_num += hdr_len + pd_len;
599 if (flags & SET_FIN) {
600 cm_node->tcp_cntxt.loc_seq_num++;
601 tcph->th_flags |= TH_FIN;
605 tcph->th_flags |= TH_RST;
607 tcph->th_off = (u16)((sizeof(*tcph) + opts_len + 3) >> 2);
608 sqbuf->tcphlen = tcph->th_off << 2;
609 tcph->th_win = htons(cm_node->tcp_cntxt.rcv_wnd);
613 memcpy(buf, options->addr, opts_len);
618 memcpy(buf, hdr->addr, hdr_len);
622 if (pdata && pdata->addr)
623 memcpy(buf, pdata->addr, pdata->size);
625 atomic_set(&sqbuf->refcount, 1);
627 irdma_debug_buf(vsi->dev, IRDMA_DEBUG_ILQ, "TRANSMIT ILQ BUFFER",
628 sqbuf->mem.va, sqbuf->totallen);
634 * irdma_send_reset - Send RST packet
635 * @cm_node: connection's node
638 irdma_send_reset(struct irdma_cm_node *cm_node)
640 struct irdma_puda_buf *sqbuf;
641 int flags = SET_RST | SET_ACK;
643 sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, NULL, NULL,
648 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
649 "caller: %pS cm_node %p cm_id=%p accel=%d state=%d rem_port=0x%04x, loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4\n",
650 __builtin_return_address(0), cm_node, cm_node->cm_id,
651 cm_node->accelerated, cm_node->state, cm_node->rem_port,
652 cm_node->loc_port, cm_node->rem_addr, cm_node->loc_addr);
654 return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 0,
659 * irdma_active_open_err - send event for active side cm error
660 * @cm_node: connection's node
661 * @reset: Flag to send reset or not
664 irdma_active_open_err(struct irdma_cm_node *cm_node, bool reset)
666 irdma_cleanup_retrans_entry(cm_node);
667 cm_node->cm_core->stats_connect_errs++;
669 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
670 "cm_node=%p state=%d\n", cm_node, cm_node->state);
671 atomic_inc(&cm_node->refcnt);
672 irdma_send_reset(cm_node);
675 cm_node->state = IRDMA_CM_STATE_CLOSED;
676 irdma_create_event(cm_node, IRDMA_CM_EVENT_ABORTED);
680 * irdma_passive_open_err - handle passive side cm error
681 * @cm_node: connection's node
682 * @reset: send reset or just free cm_node
685 irdma_passive_open_err(struct irdma_cm_node *cm_node, bool reset)
687 irdma_cleanup_retrans_entry(cm_node);
688 cm_node->cm_core->stats_passive_errs++;
689 cm_node->state = IRDMA_CM_STATE_CLOSED;
690 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
691 "cm_node=%p state =%d\n", cm_node, cm_node->state);
693 irdma_send_reset(cm_node);
695 irdma_rem_ref_cm_node(cm_node);
699 * irdma_event_connect_error - to create connect error event
700 * @event: cm information for connect event
703 irdma_event_connect_error(struct irdma_cm_event *event)
705 struct irdma_qp *iwqp;
706 struct iw_cm_id *cm_id;
708 cm_id = event->cm_node->cm_id;
712 iwqp = cm_id->provider_data;
714 if (!iwqp || !iwqp->iwdev)
718 cm_id->provider_data = NULL;
719 irdma_send_cm_event(event->cm_node, cm_id, IW_CM_EVENT_CONNECT_REPLY,
721 irdma_rem_ref_cm_node(event->cm_node);
725 * irdma_process_options - process options from TCP header
726 * @cm_node: connection's node
727 * @optionsloc: point to start of options
728 * @optionsize: size of all options
729 * @syn_pkt: flag if syn packet
732 irdma_process_options(struct irdma_cm_node *cm_node, u8 *optionsloc,
733 u32 optionsize, u32 syn_pkt)
737 union all_known_options *all_options;
738 char got_mss_option = 0;
740 while (offset < optionsize) {
741 all_options = (union all_known_options *)(optionsloc + offset);
742 switch (all_options->base.optionnum) {
746 case OPTION_NUM_NONE:
750 irdma_debug(iwdev_to_idev(cm_node->iwdev),
752 "MSS Length: %d Offset: %d Size: %d\n",
753 all_options->mss.len, offset, optionsize);
755 if (all_options->mss.len != 4)
757 tmp = ntohs(all_options->mss.mss);
758 if ((cm_node->ipv4 &&
759 (tmp + IRDMA_MTU_TO_MSS_IPV4) < IRDMA_MIN_MTU_IPV4) ||
761 (tmp + IRDMA_MTU_TO_MSS_IPV6) < IRDMA_MIN_MTU_IPV6))
763 if (tmp < cm_node->tcp_cntxt.mss)
764 cm_node->tcp_cntxt.mss = tmp;
766 case OPTION_NUM_WINDOW_SCALE:
767 cm_node->tcp_cntxt.snd_wscale =
768 all_options->windowscale.shiftcount;
771 irdma_debug(iwdev_to_idev(cm_node->iwdev),
773 "Unsupported TCP Option: %x\n",
774 all_options->base.optionnum);
777 offset += all_options->base.len;
779 if (!got_mss_option && syn_pkt)
780 cm_node->tcp_cntxt.mss = IRDMA_CM_DEFAULT_MSS;
786 * irdma_handle_tcp_options - setup TCP context info after parsing TCP options
787 * @cm_node: connection's node
788 * @tcph: pointer tcp header
789 * @optionsize: size of options rcvd
790 * @passive: active or passive flag
793 irdma_handle_tcp_options(struct irdma_cm_node *cm_node,
794 struct tcphdr *tcph, int optionsize,
797 u8 *optionsloc = (u8 *)&tcph[1];
801 ret = irdma_process_options(cm_node, optionsloc, optionsize,
802 (u32)tcph->th_flags & TH_SYN);
804 irdma_debug(iwdev_to_idev(cm_node->iwdev),
806 "Node %p, Sending Reset\n", cm_node);
808 irdma_passive_open_err(cm_node, true);
810 irdma_active_open_err(cm_node, true);
815 cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->th_win)
816 << cm_node->tcp_cntxt.snd_wscale;
818 if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd)
819 cm_node->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.snd_wnd;
825 * irdma_build_mpa_v1 - build a MPA V1 frame
826 * @cm_node: connection's node
827 * @start_addr: address where to build frame
828 * @mpa_key: to do read0 or write0
831 irdma_build_mpa_v1(struct irdma_cm_node *cm_node, void *start_addr,
834 struct ietf_mpa_v1 *mpa_frame = start_addr;
837 case MPA_KEY_REQUEST:
838 memcpy(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE);
841 memcpy(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE);
846 mpa_frame->flags = IETF_MPA_FLAGS_CRC;
847 mpa_frame->rev = cm_node->mpa_frame_rev;
848 mpa_frame->priv_data_len = htons(cm_node->pdata.size);
852 * irdma_build_mpa_v2 - build a MPA V2 frame
853 * @cm_node: connection's node
854 * @start_addr: buffer start address
855 * @mpa_key: to do read0 or write0
858 irdma_build_mpa_v2(struct irdma_cm_node *cm_node, void *start_addr,
861 struct ietf_mpa_v2 *mpa_frame = start_addr;
862 struct ietf_rtr_msg *rtr_msg = &mpa_frame->rtr_msg;
863 u16 ctrl_ird, ctrl_ord;
865 /* initialize the upper 5 bytes of the frame */
866 irdma_build_mpa_v1(cm_node, start_addr, mpa_key);
867 mpa_frame->flags |= IETF_MPA_V2_FLAG;
868 if (cm_node->iwdev->iw_ooo) {
869 mpa_frame->flags |= IETF_MPA_FLAGS_MARKERS;
870 cm_node->rcv_mark_en = true;
872 mpa_frame->priv_data_len = cpu_to_be16(be16_to_cpu(mpa_frame->priv_data_len) +
875 /* initialize RTR msg */
876 if (cm_node->mpav2_ird_ord == IETF_NO_IRD_ORD) {
877 ctrl_ird = IETF_NO_IRD_ORD;
878 ctrl_ord = IETF_NO_IRD_ORD;
880 ctrl_ird = (cm_node->ird_size > IETF_NO_IRD_ORD) ?
883 ctrl_ord = (cm_node->ord_size > IETF_NO_IRD_ORD) ?
887 ctrl_ird |= IETF_PEER_TO_PEER;
890 case MPA_KEY_REQUEST:
891 ctrl_ord |= IETF_RDMA0_WRITE;
892 ctrl_ord |= IETF_RDMA0_READ;
895 switch (cm_node->send_rdma0_op) {
896 case SEND_RDMA_WRITE_ZERO:
897 ctrl_ord |= IETF_RDMA0_WRITE;
899 case SEND_RDMA_READ_ZERO:
900 ctrl_ord |= IETF_RDMA0_READ;
907 rtr_msg->ctrl_ird = htons(ctrl_ird);
908 rtr_msg->ctrl_ord = htons(ctrl_ord);
912 * irdma_cm_build_mpa_frame - build mpa frame for mpa version 1 or version 2
913 * @cm_node: connection's node
914 * @mpa: mpa: data buffer
915 * @mpa_key: to do read0 or write0
918 irdma_cm_build_mpa_frame(struct irdma_cm_node *cm_node,
919 struct irdma_kmem_info *mpa, u8 mpa_key)
923 switch (cm_node->mpa_frame_rev) {
925 hdr_len = sizeof(struct ietf_mpa_v1);
926 irdma_build_mpa_v1(cm_node, mpa->addr, mpa_key);
929 hdr_len = sizeof(struct ietf_mpa_v2);
930 irdma_build_mpa_v2(cm_node, mpa->addr, mpa_key);
940 * irdma_send_mpa_request - active node send mpa request to passive node
941 * @cm_node: connection's node
944 irdma_send_mpa_request(struct irdma_cm_node *cm_node)
946 struct irdma_puda_buf *sqbuf;
948 cm_node->mpa_hdr.addr = &cm_node->mpa_v2_frame;
949 cm_node->mpa_hdr.size = irdma_cm_build_mpa_frame(cm_node,
952 if (!cm_node->mpa_hdr.size) {
953 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
954 "mpa size = %d\n", cm_node->mpa_hdr.size);
958 sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL,
960 &cm_node->pdata, SET_ACK);
964 return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 1,
969 * irdma_send_mpa_reject -
970 * @cm_node: connection's node
971 * @pdata: reject data for connection
972 * @plen: length of reject data
975 irdma_send_mpa_reject(struct irdma_cm_node *cm_node,
976 const void *pdata, u8 plen)
978 struct irdma_puda_buf *sqbuf;
979 struct irdma_mpa_priv_info priv_info;
981 cm_node->mpa_hdr.addr = &cm_node->mpa_v2_frame;
982 cm_node->mpa_hdr.size = irdma_cm_build_mpa_frame(cm_node,
986 cm_node->mpa_v2_frame.flags |= IETF_MPA_FLAGS_REJECT;
987 priv_info.addr = pdata;
988 priv_info.size = plen;
990 sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL,
991 &cm_node->mpa_hdr, &priv_info,
996 cm_node->state = IRDMA_CM_STATE_FIN_WAIT1;
998 return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 1,
1003 * irdma_negotiate_mpa_v2_ird_ord - negotiate MPAv2 IRD/ORD
1004 * @cm_node: connection's node
1005 * @buf: Data pointer
1008 irdma_negotiate_mpa_v2_ird_ord(struct irdma_cm_node *cm_node,
1011 struct ietf_mpa_v2 *mpa_v2_frame;
1012 struct ietf_rtr_msg *rtr_msg;
1018 mpa_v2_frame = (struct ietf_mpa_v2 *)buf;
1019 rtr_msg = &mpa_v2_frame->rtr_msg;
1021 /* parse rtr message */
1022 ctrl_ord = ntohs(rtr_msg->ctrl_ord);
1023 ctrl_ird = ntohs(rtr_msg->ctrl_ird);
1024 ird_size = ctrl_ird & IETF_NO_IRD_ORD;
1025 ord_size = ctrl_ord & IETF_NO_IRD_ORD;
1027 if (!(ctrl_ird & IETF_PEER_TO_PEER))
1030 if (ird_size == IETF_NO_IRD_ORD || ord_size == IETF_NO_IRD_ORD) {
1031 cm_node->mpav2_ird_ord = IETF_NO_IRD_ORD;
1032 goto negotiate_done;
1035 if (cm_node->state != IRDMA_CM_STATE_MPAREQ_SENT) {
1037 if (!ord_size && (ctrl_ord & IETF_RDMA0_READ))
1038 cm_node->ird_size = 1;
1039 if (cm_node->ord_size > ird_size)
1040 cm_node->ord_size = ird_size;
1043 if (!ird_size && (ctrl_ord & IETF_RDMA0_READ))
1044 /* Remote peer doesn't support RDMA0_READ */
1047 if (cm_node->ord_size > ird_size)
1048 cm_node->ord_size = ird_size;
1050 if (cm_node->ird_size < ord_size)
1051 /* no resources available */
1056 if (ctrl_ord & IETF_RDMA0_READ)
1057 cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO;
1058 else if (ctrl_ord & IETF_RDMA0_WRITE)
1059 cm_node->send_rdma0_op = SEND_RDMA_WRITE_ZERO;
1061 /* Not supported RDMA0 operation */
1064 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
1065 "MPAV2 Negotiated ORD: %d, IRD: %d\n", cm_node->ord_size,
1071 * irdma_parse_mpa - process an IETF MPA frame
1072 * @cm_node: connection's node
1073 * @buf: Data pointer
1074 * @type: to return accept or reject
1075 * @len: Len of mpa buffer
1078 irdma_parse_mpa(struct irdma_cm_node *cm_node, u8 *buf, u32 *type,
1081 struct ietf_mpa_v1 *mpa_frame;
1082 int mpa_hdr_len, priv_data_len, ret;
1084 *type = IRDMA_MPA_REQUEST_ACCEPT;
1086 if (len < sizeof(struct ietf_mpa_v1)) {
1087 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
1088 "ietf buffer small (%x)\n", len);
1092 mpa_frame = (struct ietf_mpa_v1 *)buf;
1093 mpa_hdr_len = sizeof(struct ietf_mpa_v1);
1094 priv_data_len = ntohs(mpa_frame->priv_data_len);
1096 if (priv_data_len > IETF_MAX_PRIV_DATA_LEN) {
1097 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
1098 "private_data too big %d\n", priv_data_len);
1102 if (mpa_frame->rev != IETF_MPA_V1 && mpa_frame->rev != IETF_MPA_V2) {
1103 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
1104 "unsupported mpa rev = %d\n", mpa_frame->rev);
1108 if (mpa_frame->rev > cm_node->mpa_frame_rev) {
1109 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
1110 "rev %d\n", mpa_frame->rev);
1114 cm_node->mpa_frame_rev = mpa_frame->rev;
1115 if (cm_node->state != IRDMA_CM_STATE_MPAREQ_SENT) {
1116 if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REQ,
1117 IETF_MPA_KEY_SIZE)) {
1118 irdma_debug(iwdev_to_idev(cm_node->iwdev),
1120 "Unexpected MPA Key received\n");
1124 if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REP,
1125 IETF_MPA_KEY_SIZE)) {
1126 irdma_debug(iwdev_to_idev(cm_node->iwdev),
1128 "Unexpected MPA Key received\n");
1133 if (priv_data_len + mpa_hdr_len > len) {
1134 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
1135 "ietf buffer len(%x + %x != %x)\n", priv_data_len,
1140 if (len > IRDMA_MAX_CM_BUF) {
1141 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
1142 "ietf buffer large len = %d\n", len);
1146 switch (mpa_frame->rev) {
1148 mpa_hdr_len += IETF_RTR_MSG_SIZE;
1149 ret = irdma_negotiate_mpa_v2_ird_ord(cm_node, buf);
1158 memcpy(cm_node->pdata_buf, buf + mpa_hdr_len, priv_data_len);
1159 cm_node->pdata.size = priv_data_len;
1161 if (mpa_frame->flags & IETF_MPA_FLAGS_REJECT)
1162 *type = IRDMA_MPA_REQUEST_REJECT;
1164 if (mpa_frame->flags & IETF_MPA_FLAGS_MARKERS)
1165 cm_node->snd_mark_en = true;
1171 * irdma_schedule_cm_timer
1172 * @cm_node: connection's node
1173 * @sqbuf: buffer to send
1174 * @type: if it is send or close
1175 * @send_retrans: if rexmits to be done
1176 * @close_when_complete: is cm_node to be removed
1178 * note - cm_node needs to be protected before calling this. Encase in:
1179 * irdma_rem_ref_cm_node(cm_core, cm_node);
1180 * irdma_schedule_cm_timer(...)
1181 * atomic_inc(&cm_node->refcnt);
1184 irdma_schedule_cm_timer(struct irdma_cm_node *cm_node,
1185 struct irdma_puda_buf *sqbuf,
1186 enum irdma_timer_type type, int send_retrans,
1187 int close_when_complete)
1189 struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi;
1190 struct irdma_cm_core *cm_core = cm_node->cm_core;
1191 struct irdma_timer_entry *new_send;
1193 unsigned long flags;
1195 new_send = kzalloc(sizeof(*new_send), GFP_ATOMIC);
1197 if (type != IRDMA_TIMER_TYPE_CLOSE)
1198 irdma_free_sqbuf(vsi, sqbuf);
1202 new_send->retrycount = IRDMA_DEFAULT_RETRYS;
1203 new_send->retranscount = IRDMA_DEFAULT_RETRANS;
1204 new_send->sqbuf = sqbuf;
1205 new_send->timetosend = jiffies;
1206 new_send->type = type;
1207 new_send->send_retrans = send_retrans;
1208 new_send->close_when_complete = close_when_complete;
1210 if (type == IRDMA_TIMER_TYPE_CLOSE) {
1211 new_send->timetosend += (HZ / 10);
1212 if (cm_node->close_entry) {
1214 irdma_debug(iwdev_to_idev(cm_node->iwdev),
1215 IRDMA_DEBUG_CM, "already close entry\n");
1219 cm_node->close_entry = new_send;
1220 } else { /* type == IRDMA_TIMER_TYPE_SEND */
1221 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1222 cm_node->send_entry = new_send;
1223 atomic_inc(&cm_node->refcnt);
1224 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
1225 new_send->timetosend = jiffies + IRDMA_RETRY_TIMEOUT;
1227 atomic_inc(&sqbuf->refcount);
1228 irdma_puda_send_buf(vsi->ilq, sqbuf);
1229 if (!send_retrans) {
1230 irdma_cleanup_retrans_entry(cm_node);
1231 if (close_when_complete)
1232 irdma_rem_ref_cm_node(cm_node);
1237 spin_lock_irqsave(&cm_core->ht_lock, flags);
1238 was_timer_set = timer_pending(&cm_core->tcp_timer);
1240 if (!was_timer_set) {
1241 cm_core->tcp_timer.expires = new_send->timetosend;
1242 add_timer(&cm_core->tcp_timer);
1244 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
1250 * irdma_retrans_expired - Could not rexmit the packet
1251 * @cm_node: connection's node
1254 irdma_retrans_expired(struct irdma_cm_node *cm_node)
1256 enum irdma_cm_node_state state = cm_node->state;
1258 cm_node->state = IRDMA_CM_STATE_CLOSED;
1260 case IRDMA_CM_STATE_SYN_RCVD:
1261 case IRDMA_CM_STATE_CLOSING:
1262 irdma_rem_ref_cm_node(cm_node);
1264 case IRDMA_CM_STATE_FIN_WAIT1:
1265 case IRDMA_CM_STATE_LAST_ACK:
1266 irdma_send_reset(cm_node);
1269 atomic_inc(&cm_node->refcnt);
1270 irdma_send_reset(cm_node);
1271 irdma_create_event(cm_node, IRDMA_CM_EVENT_ABORTED);
1277 * irdma_handle_close_entry - for handling retry/timeouts
1278 * @cm_node: connection's node
1279 * @rem_node: flag for remove cm_node
1282 irdma_handle_close_entry(struct irdma_cm_node *cm_node,
1285 struct irdma_timer_entry *close_entry = cm_node->close_entry;
1286 struct irdma_qp *iwqp;
1287 unsigned long flags;
1291 iwqp = (struct irdma_qp *)close_entry->sqbuf;
1293 spin_lock_irqsave(&iwqp->lock, flags);
1295 iwqp->hw_tcp_state = IRDMA_TCP_STATE_CLOSED;
1296 iwqp->hw_iwarp_state = IRDMA_QP_STATE_ERROR;
1297 iwqp->last_aeq = IRDMA_AE_RESET_SENT;
1298 iwqp->ibqp_state = IB_QPS_ERR;
1299 spin_unlock_irqrestore(&iwqp->lock, flags);
1300 irdma_cm_disconn(iwqp);
1302 spin_unlock_irqrestore(&iwqp->lock, flags);
1304 } else if (rem_node) {
1305 /* TIME_WAIT state */
1306 irdma_rem_ref_cm_node(cm_node);
1310 cm_node->close_entry = NULL;
1314 * irdma_cm_timer_tick - system's timer expired callback
1315 * @t: Pointer to timer_list
1318 irdma_cm_timer_tick(struct timer_list *t)
1320 unsigned long nexttimeout = jiffies + IRDMA_LONG_TIME;
1321 struct irdma_cm_node *cm_node;
1322 struct irdma_timer_entry *send_entry, *close_entry;
1323 struct list_head *list_core_temp;
1324 struct list_head *list_node;
1325 struct irdma_cm_core *cm_core = from_timer(cm_core, t, tcp_timer);
1326 struct irdma_sc_vsi *vsi;
1328 unsigned long timetosend;
1329 unsigned long flags;
1330 struct list_head timer_list;
1332 INIT_LIST_HEAD(&timer_list);
1335 irdma_timer_list_prep(cm_core, &timer_list);
1338 list_for_each_safe(list_node, list_core_temp, &timer_list) {
1339 cm_node = container_of(list_node, struct irdma_cm_node,
1341 close_entry = cm_node->close_entry;
1344 if (time_after(close_entry->timetosend, jiffies)) {
1345 if (nexttimeout > close_entry->timetosend ||
1347 nexttimeout = close_entry->timetosend;
1351 irdma_handle_close_entry(cm_node, 1);
1355 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1357 send_entry = cm_node->send_entry;
1360 if (time_after(send_entry->timetosend, jiffies)) {
1361 if (cm_node->state != IRDMA_CM_STATE_OFFLOADED) {
1362 if (nexttimeout > send_entry->timetosend ||
1364 nexttimeout = send_entry->timetosend;
1368 irdma_free_retrans_entry(cm_node);
1373 if (cm_node->state == IRDMA_CM_STATE_OFFLOADED ||
1374 cm_node->state == IRDMA_CM_STATE_CLOSED) {
1375 irdma_free_retrans_entry(cm_node);
1379 if (!send_entry->retranscount || !send_entry->retrycount) {
1380 irdma_free_retrans_entry(cm_node);
1382 spin_unlock_irqrestore(&cm_node->retrans_list_lock,
1384 irdma_retrans_expired(cm_node);
1385 cm_node->state = IRDMA_CM_STATE_CLOSED;
1386 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1389 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
1391 vsi = &cm_node->iwdev->vsi;
1392 if (!cm_node->ack_rcvd) {
1393 atomic_inc(&send_entry->sqbuf->refcount);
1394 irdma_puda_send_buf(vsi->ilq, send_entry->sqbuf);
1395 cm_node->cm_core->stats_pkt_retrans++;
1398 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1399 if (send_entry->send_retrans) {
1400 send_entry->retranscount--;
1401 timetosend = (IRDMA_RETRY_TIMEOUT <<
1402 (IRDMA_DEFAULT_RETRANS -
1403 send_entry->retranscount));
1405 send_entry->timetosend = jiffies +
1406 min(timetosend, IRDMA_MAX_TIMEOUT);
1407 if (nexttimeout > send_entry->timetosend || !settimer) {
1408 nexttimeout = send_entry->timetosend;
1412 int close_when_complete;
1414 close_when_complete = send_entry->close_when_complete;
1415 irdma_free_retrans_entry(cm_node);
1416 if (close_when_complete)
1417 irdma_rem_ref_cm_node(cm_node);
1420 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
1421 irdma_rem_ref_cm_node(cm_node);
1425 spin_lock_irqsave(&cm_core->ht_lock, flags);
1426 if (!timer_pending(&cm_core->tcp_timer)) {
1427 cm_core->tcp_timer.expires = nexttimeout;
1428 add_timer(&cm_core->tcp_timer);
1430 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
1435 * irdma_send_syn - send SYN packet
1436 * @cm_node: connection's node
1437 * @sendack: flag to set ACK bit or not
1440 irdma_send_syn(struct irdma_cm_node *cm_node, u32 sendack)
1442 struct irdma_puda_buf *sqbuf;
1443 int flags = SET_SYN;
1444 char optionsbuf[sizeof(struct option_mss) +
1445 sizeof(struct option_windowscale) +
1446 sizeof(struct option_base) + TCP_OPTIONS_PADDING];
1447 struct irdma_kmem_info opts;
1448 int optionssize = 0;
1449 /* Sending MSS option */
1450 union all_known_options *options;
1452 opts.addr = optionsbuf;
1456 options = (union all_known_options *)&optionsbuf[optionssize];
1457 options->mss.optionnum = OPTION_NUM_MSS;
1458 options->mss.len = sizeof(struct option_mss);
1459 options->mss.mss = htons(cm_node->tcp_cntxt.mss);
1460 optionssize += sizeof(struct option_mss);
1462 options = (union all_known_options *)&optionsbuf[optionssize];
1463 options->windowscale.optionnum = OPTION_NUM_WINDOW_SCALE;
1464 options->windowscale.len = sizeof(struct option_windowscale);
1465 options->windowscale.shiftcount = cm_node->tcp_cntxt.rcv_wscale;
1466 optionssize += sizeof(struct option_windowscale);
1467 options = (union all_known_options *)&optionsbuf[optionssize];
1468 options->eol = OPTION_NUM_EOL;
1474 opts.size = optionssize;
1476 sqbuf = cm_node->cm_core->form_cm_frame(cm_node, &opts, NULL, NULL,
1481 return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 1,
1486 * irdma_send_ack - Send ACK packet
1487 * @cm_node: connection's node
1490 irdma_send_ack(struct irdma_cm_node *cm_node)
1492 struct irdma_puda_buf *sqbuf;
1493 struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi;
1495 sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, NULL, NULL,
1498 irdma_puda_send_buf(vsi->ilq, sqbuf);
1502 * irdma_send_fin - Send FIN pkt
1503 * @cm_node: connection's node
1506 irdma_send_fin(struct irdma_cm_node *cm_node)
1508 struct irdma_puda_buf *sqbuf;
1510 sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, NULL, NULL,
1515 return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 1,
1520 * irdma_find_listener - find a cm node listening on this addr-port pair
1521 * @cm_core: cm's core
1522 * @dst_addr: listener ip addr
1523 * @dst_port: listener tcp port num
1524 * @vlan_id: virtual LAN ID
1525 * @listener_state: state to match with listen node's
1527 static struct irdma_cm_listener *
1528 irdma_find_listener(struct irdma_cm_core *cm_core, u32 *dst_addr, u16 dst_port,
1529 u16 vlan_id, enum irdma_cm_listener_state listener_state)
1531 struct irdma_cm_listener *listen_node;
1532 static const u32 ip_zero[4] = {0, 0, 0, 0};
1535 unsigned long flags;
1537 /* walk list and find cm_node associated with this session ID */
1538 spin_lock_irqsave(&cm_core->listen_list_lock, flags);
1539 list_for_each_entry(listen_node, &cm_core->listen_list, list) {
1540 memcpy(listen_addr, listen_node->loc_addr, sizeof(listen_addr));
1541 listen_port = listen_node->loc_port;
1542 if (listen_port != dst_port ||
1543 !(listener_state & listen_node->listener_state))
1545 /* compare node pair, return node handle if a match */
1546 if (!memcmp(listen_addr, ip_zero, sizeof(listen_addr)) ||
1547 (!memcmp(listen_addr, dst_addr, sizeof(listen_addr)) &&
1548 vlan_id == listen_node->vlan_id)) {
1549 atomic_inc(&listen_node->refcnt);
1550 spin_unlock_irqrestore(&cm_core->listen_list_lock,
1555 spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
1561 * irdma_del_multiple_qhash - Remove qhash and child listens
1562 * @iwdev: iWarp device
1563 * @cm_info: CM info for parent listen node
1564 * @cm_parent_listen_node: The parent listen node
1567 irdma_del_multiple_qhash(struct irdma_device *iwdev,
1568 struct irdma_cm_info *cm_info,
1569 struct irdma_cm_listener *cm_parent_listen_node)
1571 struct irdma_cm_listener *child_listen_node;
1572 struct list_head *pos, *tpos;
1573 unsigned long flags;
1576 spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, flags);
1577 list_for_each_safe(pos, tpos,
1578 &cm_parent_listen_node->child_listen_list) {
1579 child_listen_node = list_entry(pos, struct irdma_cm_listener,
1581 if (child_listen_node->ipv4)
1582 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
1583 "removing child listen for IP=%pI4, port=%d, vlan=%d\n",
1584 child_listen_node->loc_addr,
1585 child_listen_node->loc_port,
1586 child_listen_node->vlan_id);
1588 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
1589 "removing child listen for IP=%pI6, port=%d, vlan=%d\n",
1590 child_listen_node->loc_addr,
1591 child_listen_node->loc_port,
1592 child_listen_node->vlan_id);
1594 memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
1595 sizeof(cm_info->loc_addr));
1596 cm_info->vlan_id = child_listen_node->vlan_id;
1597 if (child_listen_node->qhash_set) {
1598 ret = irdma_manage_qhash(iwdev, cm_info,
1599 IRDMA_QHASH_TYPE_TCP_SYN,
1600 IRDMA_QHASH_MANAGE_TYPE_DELETE,
1602 child_listen_node->qhash_set = false;
1606 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
1607 "Child listen node freed = %p\n",
1609 kfree(child_listen_node);
1610 cm_parent_listen_node->cm_core->stats_listen_nodes_destroyed++;
1612 spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
1618 * irdma_netdev_vlan_ipv6 - Gets the netdev and mac
1619 * @addr: local IPv6 address
1620 * @vlan_id: vlan id for the given IPv6 address
1621 * @mac: mac address for the given IPv6 address
1623 * Returns the net_device of the IPv6 address and also sets the
1624 * vlan id and mac for that address.
1627 irdma_netdev_vlan_ipv6(u32 *addr, u16 *vlan_id, u8 *mac)
1629 struct ifnet *ip_dev = NULL;
1630 struct in6_addr laddr6;
1632 irdma_copy_ip_htonl(laddr6.__u6_addr.__u6_addr32, addr);
1634 *vlan_id = 0xFFFF; /* Match rdma_vlan_dev_vlan_id() */
1638 ip_dev = ip6_ifp_find(&init_net, laddr6, 0);
1641 *vlan_id = rdma_vlan_dev_vlan_id(ip_dev);
1642 if (ip_dev->if_addr && ip_dev->if_addr->ifa_addr && mac)
1643 ether_addr_copy(mac, IF_LLADDR(ip_dev));
1650 * irdma_get_vlan_ipv4 - Returns the vlan_id for IPv4 address
1651 * @addr: local IPv4 address
1654 irdma_get_vlan_ipv4(u32 *addr)
1656 struct ifnet *netdev;
1657 u16 vlan_id = 0xFFFF;
1659 netdev = ip_ifp_find(&init_net, htonl(addr[0]));
1661 vlan_id = rdma_vlan_dev_vlan_id(netdev);
1669 * irdma_add_mqh_6 - Adds multiple qhashes for IPv6
1670 * @iwdev: iWarp device
1671 * @cm_info: CM info for parent listen node
1672 * @cm_parent_listen_node: The parent listen node
1674 * Adds a qhash and a child listen node for every IPv6 address
1675 * on the adapter and adds the associated qhash filter
1678 irdma_add_mqh_6(struct irdma_device *iwdev,
1679 struct irdma_cm_info *cm_info,
1680 struct irdma_cm_listener *cm_parent_listen_node)
1682 struct ifnet *ip_dev;
1684 struct irdma_cm_listener *child_listen_node;
1685 unsigned long flags;
1689 IRDMA_TAILQ_FOREACH((ip_dev), &V_ifnet, if_link) {
1690 if (!(ip_dev->if_flags & IFF_UP))
1693 if (((rdma_vlan_dev_vlan_id(ip_dev) >= VLAN_N_VID) ||
1694 (rdma_vlan_dev_real_dev(ip_dev) != iwdev->netdev)) &&
1695 ip_dev != iwdev->netdev)
1698 if_addr_rlock(ip_dev);
1699 IRDMA_TAILQ_FOREACH(ifp, &ip_dev->if_addrhead, ifa_link) {
1700 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
1701 "IP=%pI6, vlan_id=%d, MAC=%pM\n",
1702 &((struct sockaddr_in6 *)ifp->ifa_addr)->sin6_addr, rdma_vlan_dev_vlan_id(ip_dev),
1704 if (((struct sockaddr_in6 *)ifp->ifa_addr)->sin6_family != AF_INET6)
1706 child_listen_node = kzalloc(sizeof(*child_listen_node), GFP_KERNEL);
1707 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
1708 "Allocating child listener %p\n",
1710 if (!child_listen_node) {
1711 irdma_debug(iwdev_to_idev(iwdev),
1713 "listener memory allocation\n");
1715 if_addr_runlock(ip_dev);
1719 memcpy(child_listen_node, cm_parent_listen_node,
1720 sizeof(*child_listen_node));
1721 cm_info->vlan_id = rdma_vlan_dev_vlan_id(ip_dev);
1722 child_listen_node->vlan_id = cm_info->vlan_id;
1723 irdma_copy_ip_ntohl(child_listen_node->loc_addr,
1724 ((struct sockaddr_in6 *)ifp->ifa_addr)->sin6_addr.__u6_addr.__u6_addr32);
1725 memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
1726 sizeof(cm_info->loc_addr));
1727 ret = irdma_manage_qhash(iwdev, cm_info,
1728 IRDMA_QHASH_TYPE_TCP_SYN,
1729 IRDMA_QHASH_MANAGE_TYPE_ADD,
1732 kfree(child_listen_node);
1736 child_listen_node->qhash_set = true;
1737 spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, flags);
1738 list_add(&child_listen_node->child_listen_list,
1739 &cm_parent_listen_node->child_listen_list);
1740 spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
1741 cm_parent_listen_node->cm_core->stats_listen_nodes_created++;
1743 if_addr_runlock(ip_dev);
1752 * irdma_add_mqh_4 - Adds multiple qhashes for IPv4
1753 * @iwdev: iWarp device
1754 * @cm_info: CM info for parent listen node
1755 * @cm_parent_listen_node: The parent listen node
1757 * Adds a qhash and a child listen node for every IPv4 address
1758 * on the adapter and adds the associated qhash filter
1761 irdma_add_mqh_4(struct irdma_device *iwdev,
1762 struct irdma_cm_info *cm_info,
1763 struct irdma_cm_listener *cm_parent_listen_node)
1765 struct ifnet *ip_dev;
1766 struct irdma_cm_listener *child_listen_node;
1767 unsigned long flags;
1772 IRDMA_TAILQ_FOREACH((ip_dev), &V_ifnet, if_link) {
1773 if (!(ip_dev->if_flags & IFF_UP))
1776 if (((rdma_vlan_dev_vlan_id(ip_dev) >= VLAN_N_VID) ||
1777 (rdma_vlan_dev_real_dev(ip_dev) != iwdev->netdev)) &&
1778 ip_dev != iwdev->netdev)
1781 if_addr_rlock(ip_dev);
1782 IRDMA_TAILQ_FOREACH(ifa, &ip_dev->if_addrhead, ifa_link) {
1783 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
1784 "Allocating child CM Listener forIP=%pI4, vlan_id=%d, MAC=%pM\n",
1786 rdma_vlan_dev_vlan_id(ip_dev), IF_LLADDR(ip_dev));
1787 if (((struct sockaddr_in *)ifa->ifa_addr)->sin_family != AF_INET)
1789 child_listen_node = kzalloc(sizeof(*child_listen_node), GFP_KERNEL);
1790 cm_parent_listen_node->cm_core->stats_listen_nodes_created++;
1791 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
1792 "Allocating child listener %p\n",
1794 if (!child_listen_node) {
1795 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
1796 "listener memory allocation\n");
1797 if_addr_runlock(ip_dev);
1802 memcpy(child_listen_node, cm_parent_listen_node,
1803 sizeof(*child_listen_node));
1804 child_listen_node->vlan_id = rdma_vlan_dev_vlan_id(ip_dev);
1805 cm_info->vlan_id = child_listen_node->vlan_id;
1806 child_listen_node->loc_addr[0] =
1807 ntohl(((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr);
1808 memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
1809 sizeof(cm_info->loc_addr));
1810 ret = irdma_manage_qhash(iwdev, cm_info,
1811 IRDMA_QHASH_TYPE_TCP_SYN,
1812 IRDMA_QHASH_MANAGE_TYPE_ADD,
1815 kfree(child_listen_node);
1816 cm_parent_listen_node->cm_core
1817 ->stats_listen_nodes_created--;
1821 child_listen_node->qhash_set = true;
1822 spin_lock_irqsave(&iwdev->cm_core.listen_list_lock,
1824 list_add(&child_listen_node->child_listen_list,
1825 &cm_parent_listen_node->child_listen_list);
1826 spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
1828 if_addr_runlock(ip_dev);
1837 * irdma_add_mqh - Adds multiple qhashes
1838 * @iwdev: iWarp device
1839 * @cm_info: CM info for parent listen node
1840 * @cm_listen_node: The parent listen node
1843 irdma_add_mqh(struct irdma_device *iwdev,
1844 struct irdma_cm_info *cm_info,
1845 struct irdma_cm_listener *cm_listen_node)
1848 VNET_ITERATOR_DECL(vnet_iter);
1851 VNET_FOREACH(vnet_iter) {
1853 CURVNET_SET_QUIET(vnet_iter);
1856 err = irdma_add_mqh_4(iwdev, cm_info, cm_listen_node);
1858 err = irdma_add_mqh_6(iwdev, cm_info, cm_listen_node);
1862 VNET_LIST_RUNLOCK();
1868 * irdma_reset_list_prep - add connection nodes slated for reset to list
1869 * @cm_core: cm's core
1870 * @listener: pointer to listener node
1871 * @reset_list: a list to which cm_node will be selected
1874 irdma_reset_list_prep(struct irdma_cm_core *cm_core,
1875 struct irdma_cm_listener *listener,
1876 struct list_head *reset_list)
1878 struct irdma_cm_node *cm_node;
1881 HASH_FOR_EACH_RCU(cm_core->cm_hash_tbl, bkt, cm_node, list) {
1882 if (cm_node->listener == listener &&
1883 !cm_node->accelerated &&
1884 atomic_inc_not_zero(&cm_node->refcnt))
1885 list_add(&cm_node->reset_entry, reset_list);
1890 * irdma_dec_refcnt_listen - delete listener and associated cm nodes
1891 * @cm_core: cm's core
1892 * @listener: pointer to listener node
1893 * @free_hanging_nodes: to free associated cm_nodes
1894 * @apbvt_del: flag to delete the apbvt
1897 irdma_dec_refcnt_listen(struct irdma_cm_core *cm_core,
1898 struct irdma_cm_listener *listener,
1899 int free_hanging_nodes, bool apbvt_del)
1901 struct list_head *list_pos;
1902 struct list_head *list_temp;
1903 struct irdma_cm_node *cm_node;
1904 struct list_head reset_list;
1905 struct irdma_cm_info nfo;
1906 enum irdma_cm_node_state old_state;
1907 unsigned long flags;
1910 /* free non-accelerated child nodes for this listener */
1911 INIT_LIST_HEAD(&reset_list);
1912 if (free_hanging_nodes) {
1914 irdma_reset_list_prep(cm_core, listener, &reset_list);
1918 list_for_each_safe(list_pos, list_temp, &reset_list) {
1919 cm_node = container_of(list_pos, struct irdma_cm_node,
1921 if (cm_node->state >= IRDMA_CM_STATE_FIN_WAIT1) {
1922 irdma_rem_ref_cm_node(cm_node);
1926 irdma_cleanup_retrans_entry(cm_node);
1927 err = irdma_send_reset(cm_node);
1929 cm_node->state = IRDMA_CM_STATE_CLOSED;
1930 irdma_debug(iwdev_to_idev(cm_node->iwdev),
1931 IRDMA_DEBUG_CM, "send reset failed\n");
1933 old_state = cm_node->state;
1934 cm_node->state = IRDMA_CM_STATE_LISTENER_DESTROYED;
1935 if (old_state != IRDMA_CM_STATE_MPAREQ_RCVD)
1936 irdma_rem_ref_cm_node(cm_node);
1940 if (atomic_dec_and_test(&listener->refcnt)) {
1941 spin_lock_irqsave(&cm_core->listen_list_lock, flags);
1942 list_del(&listener->list);
1943 spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
1946 irdma_del_apbvt(listener->iwdev,
1947 listener->apbvt_entry);
1948 memcpy(nfo.loc_addr, listener->loc_addr, sizeof(nfo.loc_addr));
1949 nfo.loc_port = listener->loc_port;
1950 nfo.ipv4 = listener->ipv4;
1951 nfo.vlan_id = listener->vlan_id;
1952 nfo.user_pri = listener->user_pri;
1953 nfo.qh_qpid = listener->iwdev->vsi.ilq->qp_id;
1955 if (!list_empty(&listener->child_listen_list)) {
1956 irdma_del_multiple_qhash(listener->iwdev, &nfo,
1959 if (listener->qhash_set)
1960 irdma_manage_qhash(listener->iwdev,
1962 IRDMA_QHASH_TYPE_TCP_SYN,
1963 IRDMA_QHASH_MANAGE_TYPE_DELETE,
1967 cm_core->stats_listen_destroyed++;
1968 cm_core->stats_listen_nodes_destroyed++;
1969 irdma_debug(iwdev_to_idev(listener->iwdev), IRDMA_DEBUG_CM,
1970 "loc_port=0x%04x loc_addr=%pI4 cm_listen_node=%p cm_id=%p qhash_set=%d vlan_id=%d apbvt_del=%d\n",
1971 listener->loc_port, listener->loc_addr, listener, listener->cm_id, listener->qhash_set,
1972 listener->vlan_id, apbvt_del);
1982 * irdma_cm_del_listen - delete a listener
1983 * @cm_core: cm's core
1984 * @listener: passive connection's listener
1985 * @apbvt_del: flag to delete apbvt
1988 irdma_cm_del_listen(struct irdma_cm_core *cm_core,
1989 struct irdma_cm_listener *listener,
1992 listener->listener_state = IRDMA_CM_LISTENER_PASSIVE_STATE;
1993 listener->cm_id = NULL;
1995 return irdma_dec_refcnt_listen(cm_core, listener, 1, apbvt_del);
1999 * irdma_find_node - find a cm node that matches the reference cm node
2000 * @cm_core: cm's core
2001 * @rem_port: remote tcp port num
2002 * @rem_addr: remote ip addr
2003 * @loc_port: local tcp port num
2004 * @loc_addr: local ip addr
2005 * @vlan_id: local VLAN ID
2007 struct irdma_cm_node *
2008 irdma_find_node(struct irdma_cm_core *cm_core,
2009 u16 rem_port, u32 *rem_addr, u16 loc_port,
2010 u32 *loc_addr, u16 vlan_id)
2012 struct irdma_cm_node *cm_node;
2013 u32 key = (rem_port << 16) | loc_port;
2016 HASH_FOR_EACH_POSSIBLE_RCU(cm_core->cm_hash_tbl, cm_node, list, key) {
2017 if (cm_node->vlan_id == vlan_id &&
2018 cm_node->loc_port == loc_port && cm_node->rem_port == rem_port &&
2019 !memcmp(cm_node->loc_addr, loc_addr, sizeof(cm_node->loc_addr)) &&
2020 !memcmp(cm_node->rem_addr, rem_addr, sizeof(cm_node->rem_addr))) {
2021 if (!atomic_inc_not_zero(&cm_node->refcnt))
2036 * irdma_add_hte_node - add a cm node to the hash table
2037 * @cm_core: cm's core
2038 * @cm_node: connection's node
2041 irdma_add_hte_node(struct irdma_cm_core *cm_core,
2042 struct irdma_cm_node *cm_node)
2044 unsigned long flags;
2045 u32 key = (cm_node->rem_port << 16) | cm_node->loc_port;
2047 spin_lock_irqsave(&cm_core->ht_lock, flags);
2048 HASH_ADD_RCU(cm_core->cm_hash_tbl, &cm_node->list, key);
2049 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
2053 * irdma_ipv4_is_lpb - check if loopback
2054 * @loc_addr: local addr to compare
2055 * @rem_addr: remote address
2058 irdma_ipv4_is_lpb(struct vnet *vnet, u32 loc_addr, u32 rem_addr)
2062 CURVNET_SET_QUIET(vnet);
2063 ret = ipv4_is_loopback(htonl(rem_addr)) || (loc_addr == rem_addr);
2070 * irdma_ipv6_is_lpb - check if loopback
2071 * @loc_addr: local addr to compare
2072 * @rem_addr: remote address
2075 irdma_ipv6_is_lpb(u32 *loc_addr, u32 *rem_addr)
2077 struct in6_addr raddr6;
2079 irdma_copy_ip_htonl(raddr6.__u6_addr.__u6_addr32, rem_addr);
2081 return !memcmp(loc_addr, rem_addr, 16) || ipv6_addr_loopback(&raddr6);
2085 * irdma_cm_create_ah - create a cm address handle
2086 * @cm_node: The connection manager node to create AH for
2087 * @wait: Provides option to wait for ah creation or not
2090 irdma_cm_create_ah(struct irdma_cm_node *cm_node, bool wait)
2092 struct rdma_cm_id *rdma_id = (struct rdma_cm_id *)cm_node->cm_id->context;
2093 struct vnet *vnet = rdma_id->route.addr.dev_addr.net;
2094 struct irdma_ah_info ah_info = {0};
2095 struct irdma_device *iwdev = cm_node->iwdev;
2097 ether_addr_copy(ah_info.mac_addr, IF_LLADDR(iwdev->netdev));
2099 ah_info.hop_ttl = 0x40;
2100 ah_info.tc_tos = cm_node->tos;
2101 ah_info.vsi = &iwdev->vsi;
2103 if (cm_node->ipv4) {
2104 ah_info.ipv4_valid = true;
2105 ah_info.dest_ip_addr[0] = cm_node->rem_addr[0];
2106 ah_info.src_ip_addr[0] = cm_node->loc_addr[0];
2107 ah_info.do_lpbk = irdma_ipv4_is_lpb(vnet,
2108 ah_info.src_ip_addr[0],
2109 ah_info.dest_ip_addr[0]);
2111 memcpy(ah_info.dest_ip_addr, cm_node->rem_addr,
2112 sizeof(ah_info.dest_ip_addr));
2113 memcpy(ah_info.src_ip_addr, cm_node->loc_addr,
2114 sizeof(ah_info.src_ip_addr));
2115 ah_info.do_lpbk = irdma_ipv6_is_lpb(ah_info.src_ip_addr,
2116 ah_info.dest_ip_addr);
2119 ah_info.vlan_tag = cm_node->vlan_id;
2120 if (cm_node->vlan_id < VLAN_N_VID) {
2121 ah_info.insert_vlan_tag = 1;
2122 ah_info.vlan_tag |= cm_node->user_pri << VLAN_PRIO_SHIFT;
2125 ah_info.dst_arpindex =
2126 irdma_arp_table(iwdev->rf, ah_info.dest_ip_addr,
2127 NULL, IRDMA_ARP_RESOLVE);
2129 if (irdma_puda_create_ah(&iwdev->rf->sc_dev, &ah_info, wait,
2130 IRDMA_PUDA_RSRC_TYPE_ILQ, cm_node,
2138 * irdma_cm_free_ah - free a cm address handle
2139 * @cm_node: The connection manager node to create AH for
2142 irdma_cm_free_ah(struct irdma_cm_node *cm_node)
2144 struct irdma_device *iwdev = cm_node->iwdev;
2146 irdma_puda_free_ah(&iwdev->rf->sc_dev, cm_node->ah);
2151 * irdma_make_cm_node - create a new instance of a cm node
2152 * @cm_core: cm's core
2153 * @iwdev: iwarp device structure
2154 * @cm_info: quad info for connection
2155 * @listener: passive connection's listener
2157 static struct irdma_cm_node *
2158 irdma_make_cm_node(struct irdma_cm_core *cm_core, struct irdma_device *iwdev,
2159 struct irdma_cm_info *cm_info,
2160 struct irdma_cm_listener *listener)
2162 struct irdma_cm_node *cm_node;
2164 struct ifnet *netdev = iwdev->netdev;
2166 /* create an hte and cm_node for this instance */
2167 cm_node = kzalloc(sizeof(*cm_node), GFP_ATOMIC);
2171 /* set our node specific transport info */
2172 cm_node->ipv4 = cm_info->ipv4;
2173 cm_node->vlan_id = cm_info->vlan_id;
2174 if (cm_node->vlan_id >= VLAN_N_VID && iwdev->dcb_vlan_mode)
2175 cm_node->vlan_id = 0;
2176 cm_node->tos = cm_info->tos;
2177 cm_node->user_pri = cm_info->user_pri;
2179 if (listener->tos != cm_info->tos)
2182 "application TOS[%d] and remote client TOS[%d] mismatch\n",
2183 listener->tos, cm_info->tos);
2184 if (iwdev->vsi.dscp_mode) {
2185 cm_node->user_pri = listener->user_pri;
2187 cm_node->tos = max(listener->tos, cm_info->tos);
2188 cm_node->user_pri = rt_tos2priority(cm_node->tos);
2190 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_DCB,
2191 "listener: TOS:[%d] UP:[%d]\n", cm_node->tos,
2194 memcpy(cm_node->loc_addr, cm_info->loc_addr, sizeof(cm_node->loc_addr));
2195 memcpy(cm_node->rem_addr, cm_info->rem_addr, sizeof(cm_node->rem_addr));
2196 cm_node->loc_port = cm_info->loc_port;
2197 cm_node->rem_port = cm_info->rem_port;
2199 cm_node->mpa_frame_rev = IRDMA_CM_DEFAULT_MPA_VER;
2200 cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO;
2201 cm_node->iwdev = iwdev;
2202 cm_node->dev = &iwdev->rf->sc_dev;
2204 cm_node->ird_size = cm_node->dev->hw_attrs.max_hw_ird;
2205 cm_node->ord_size = cm_node->dev->hw_attrs.max_hw_ord;
2207 cm_node->listener = listener;
2208 cm_node->cm_id = cm_info->cm_id;
2209 ether_addr_copy(cm_node->loc_mac, IF_LLADDR(netdev));
2210 spin_lock_init(&cm_node->retrans_list_lock);
2211 cm_node->ack_rcvd = false;
2213 init_completion(&cm_node->establish_comp);
2214 atomic_set(&cm_node->refcnt, 1);
2215 /* associate our parent CM core */
2216 cm_node->cm_core = cm_core;
2217 cm_node->tcp_cntxt.loc_id = IRDMA_CM_DEFAULT_LOCAL_ID;
2218 cm_node->tcp_cntxt.rcv_wscale = iwdev->rcv_wscale;
2219 cm_node->tcp_cntxt.rcv_wnd = iwdev->rcv_wnd >> cm_node->tcp_cntxt.rcv_wscale;
2220 kc_set_loc_seq_num_mss(cm_node);
2222 arpindex = irdma_resolve_neigh_lpb_chk(iwdev, cm_node, cm_info);
2226 ether_addr_copy(cm_node->rem_mac, iwdev->rf->arp_table[arpindex].mac_addr);
2227 irdma_add_hte_node(cm_core, cm_node);
2228 cm_core->stats_nodes_created++;
2238 irdma_cm_node_free_cb(struct rcu_head *rcu_head)
2240 struct irdma_cm_node *cm_node =
2241 container_of(rcu_head, struct irdma_cm_node, rcu_head);
2242 struct irdma_cm_core *cm_core = cm_node->cm_core;
2243 struct irdma_qp *iwqp;
2244 struct irdma_cm_info nfo;
2246 /* if the node is destroyed before connection was accelerated */
2247 if (!cm_node->accelerated && cm_node->accept_pend) {
2248 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
2249 "node destroyed before established\n");
2250 atomic_dec(&cm_node->listener->pend_accepts_cnt);
2252 if (cm_node->close_entry)
2253 irdma_handle_close_entry(cm_node, 0);
2254 if (cm_node->listener) {
2255 irdma_dec_refcnt_listen(cm_core, cm_node->listener, 0, true);
2257 if (cm_node->apbvt_set) {
2258 irdma_del_apbvt(cm_node->iwdev, cm_node->apbvt_entry);
2259 cm_node->apbvt_set = 0;
2261 irdma_get_addr_info(cm_node, &nfo);
2262 if (cm_node->qhash_set) {
2263 nfo.qh_qpid = cm_node->iwdev->vsi.ilq->qp_id;
2264 irdma_manage_qhash(cm_node->iwdev, &nfo,
2265 IRDMA_QHASH_TYPE_TCP_ESTABLISHED,
2266 IRDMA_QHASH_MANAGE_TYPE_DELETE, NULL,
2268 cm_node->qhash_set = 0;
2272 iwqp = cm_node->iwqp;
2274 cm_node->cm_id->rem_ref(cm_node->cm_id);
2275 cm_node->cm_id = NULL;
2277 irdma_qp_rem_ref(&iwqp->ibqp);
2278 cm_node->iwqp = NULL;
2279 } else if (cm_node->qhash_set) {
2280 irdma_get_addr_info(cm_node, &nfo);
2281 nfo.qh_qpid = cm_node->iwdev->vsi.ilq->qp_id;
2282 irdma_manage_qhash(cm_node->iwdev, &nfo,
2283 IRDMA_QHASH_TYPE_TCP_ESTABLISHED,
2284 IRDMA_QHASH_MANAGE_TYPE_DELETE, NULL, false);
2285 cm_node->qhash_set = 0;
2288 cm_core->cm_free_ah(cm_node);
2293 * irdma_rem_ref_cm_node - destroy an instance of a cm node
2294 * @cm_node: connection's node
2297 irdma_rem_ref_cm_node(struct irdma_cm_node *cm_node)
2299 struct irdma_cm_core *cm_core = cm_node->cm_core;
2300 unsigned long flags;
2302 spin_lock_irqsave(&cm_core->ht_lock, flags);
2304 if (!atomic_dec_and_test(&cm_node->refcnt)) {
2305 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
2308 if (cm_node->iwqp) {
2309 cm_node->iwqp->cm_node = NULL;
2310 cm_node->iwqp->cm_id = NULL;
2312 HASH_DEL_RCU(cm_core->cm_hash_tbl, &cm_node->list);
2313 cm_node->cm_core->stats_nodes_destroyed++;
2315 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
2317 /* wait for all list walkers to exit their grace period */
2318 call_rcu(&cm_node->rcu_head, irdma_cm_node_free_cb);
2322 * irdma_handle_fin_pkt - FIN packet received
2323 * @cm_node: connection's node
2326 irdma_handle_fin_pkt(struct irdma_cm_node *cm_node)
2328 switch (cm_node->state) {
2329 case IRDMA_CM_STATE_SYN_RCVD:
2330 case IRDMA_CM_STATE_SYN_SENT:
2331 case IRDMA_CM_STATE_ESTABLISHED:
2332 case IRDMA_CM_STATE_MPAREJ_RCVD:
2333 cm_node->tcp_cntxt.rcv_nxt++;
2334 irdma_cleanup_retrans_entry(cm_node);
2335 cm_node->state = IRDMA_CM_STATE_LAST_ACK;
2336 irdma_send_fin(cm_node);
2338 case IRDMA_CM_STATE_MPAREQ_SENT:
2339 irdma_create_event(cm_node, IRDMA_CM_EVENT_ABORTED);
2340 cm_node->tcp_cntxt.rcv_nxt++;
2341 irdma_cleanup_retrans_entry(cm_node);
2342 cm_node->state = IRDMA_CM_STATE_CLOSED;
2343 atomic_inc(&cm_node->refcnt);
2344 irdma_send_reset(cm_node);
2346 case IRDMA_CM_STATE_FIN_WAIT1:
2347 cm_node->tcp_cntxt.rcv_nxt++;
2348 irdma_cleanup_retrans_entry(cm_node);
2349 cm_node->state = IRDMA_CM_STATE_CLOSING;
2350 irdma_send_ack(cm_node);
2352 * Wait for ACK as this is simultaneous close. After we receive ACK, do not send anything. Just rm the
2356 case IRDMA_CM_STATE_FIN_WAIT2:
2357 cm_node->tcp_cntxt.rcv_nxt++;
2358 irdma_cleanup_retrans_entry(cm_node);
2359 cm_node->state = IRDMA_CM_STATE_TIME_WAIT;
2360 irdma_send_ack(cm_node);
2361 irdma_schedule_cm_timer(cm_node, NULL, IRDMA_TIMER_TYPE_CLOSE,
2364 case IRDMA_CM_STATE_TIME_WAIT:
2365 cm_node->tcp_cntxt.rcv_nxt++;
2366 irdma_cleanup_retrans_entry(cm_node);
2367 cm_node->state = IRDMA_CM_STATE_CLOSED;
2368 irdma_rem_ref_cm_node(cm_node);
2370 case IRDMA_CM_STATE_OFFLOADED:
2372 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
2373 "bad state node state = %d\n", cm_node->state);
2379 * irdma_handle_rst_pkt - process received RST packet
2380 * @cm_node: connection's node
2381 * @rbuf: receive buffer
2384 irdma_handle_rst_pkt(struct irdma_cm_node *cm_node,
2385 struct irdma_puda_buf *rbuf)
2387 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
2388 "caller: %pS cm_node=%p state=%d rem_port=0x%04x loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4\n",
2389 __builtin_return_address(0), cm_node, cm_node->state,
2390 cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr, cm_node->loc_addr);
2392 irdma_cleanup_retrans_entry(cm_node);
2393 switch (cm_node->state) {
2394 case IRDMA_CM_STATE_SYN_SENT:
2395 case IRDMA_CM_STATE_MPAREQ_SENT:
2396 switch (cm_node->mpa_frame_rev) {
2398 /* Drop down to MPA_V1 */
2399 cm_node->mpa_frame_rev = IETF_MPA_V1;
2400 /* send a syn and goto syn sent state */
2401 cm_node->state = IRDMA_CM_STATE_SYN_SENT;
2402 if (irdma_send_syn(cm_node, 0))
2403 irdma_active_open_err(cm_node, false);
2407 irdma_active_open_err(cm_node, false);
2411 case IRDMA_CM_STATE_MPAREQ_RCVD:
2412 atomic_inc(&cm_node->passive_state);
2414 case IRDMA_CM_STATE_ESTABLISHED:
2415 case IRDMA_CM_STATE_SYN_RCVD:
2416 case IRDMA_CM_STATE_LISTENING:
2417 irdma_passive_open_err(cm_node, false);
2419 case IRDMA_CM_STATE_OFFLOADED:
2420 irdma_active_open_err(cm_node, false);
2422 case IRDMA_CM_STATE_CLOSED:
2424 case IRDMA_CM_STATE_FIN_WAIT2:
2425 case IRDMA_CM_STATE_FIN_WAIT1:
2426 case IRDMA_CM_STATE_LAST_ACK:
2427 case IRDMA_CM_STATE_TIME_WAIT:
2428 cm_node->state = IRDMA_CM_STATE_CLOSED;
2429 irdma_rem_ref_cm_node(cm_node);
2437 * irdma_handle_rcv_mpa - Process a recv'd mpa buffer
2438 * @cm_node: connection's node
2439 * @rbuf: receive buffer
2442 irdma_handle_rcv_mpa(struct irdma_cm_node *cm_node,
2443 struct irdma_puda_buf *rbuf)
2446 int datasize = rbuf->datalen;
2447 u8 *dataloc = rbuf->data;
2449 enum irdma_cm_event_type type = IRDMA_CM_EVENT_UNKNOWN;
2452 err = irdma_parse_mpa(cm_node, dataloc, &res_type, datasize);
2454 if (cm_node->state == IRDMA_CM_STATE_MPAREQ_SENT)
2455 irdma_active_open_err(cm_node, true);
2457 irdma_passive_open_err(cm_node, true);
2461 switch (cm_node->state) {
2462 case IRDMA_CM_STATE_ESTABLISHED:
2463 if (res_type == IRDMA_MPA_REQUEST_REJECT)
2464 irdma_debug(iwdev_to_idev(cm_node->iwdev),
2465 IRDMA_DEBUG_CM, "state for reject\n");
2466 cm_node->state = IRDMA_CM_STATE_MPAREQ_RCVD;
2467 type = IRDMA_CM_EVENT_MPA_REQ;
2468 irdma_send_ack(cm_node); /* ACK received MPA request */
2469 atomic_set(&cm_node->passive_state,
2470 IRDMA_PASSIVE_STATE_INDICATED);
2472 case IRDMA_CM_STATE_MPAREQ_SENT:
2473 irdma_cleanup_retrans_entry(cm_node);
2474 if (res_type == IRDMA_MPA_REQUEST_REJECT) {
2475 type = IRDMA_CM_EVENT_MPA_REJECT;
2476 cm_node->state = IRDMA_CM_STATE_MPAREJ_RCVD;
2478 type = IRDMA_CM_EVENT_CONNECTED;
2479 cm_node->state = IRDMA_CM_STATE_OFFLOADED;
2481 irdma_send_ack(cm_node);
2484 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
2485 "wrong cm_node state =%d\n", cm_node->state);
2488 irdma_create_event(cm_node, type);
2492 * irdma_check_syn - Check for error on received syn ack
2493 * @cm_node: connection's node
2494 * @tcph: pointer tcp header
2497 irdma_check_syn(struct irdma_cm_node *cm_node, struct tcphdr *tcph)
2499 if (ntohl(tcph->th_ack) != cm_node->tcp_cntxt.loc_seq_num) {
2500 irdma_active_open_err(cm_node, true);
2508 * irdma_check_seq - check seq numbers if OK
2509 * @cm_node: connection's node
2510 * @tcph: pointer tcp header
2513 irdma_check_seq(struct irdma_cm_node *cm_node, struct tcphdr *tcph)
2517 u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num;
2518 u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt;
2522 seq = ntohl(tcph->th_seq);
2523 ack_seq = ntohl(tcph->th_ack);
2524 rcv_wnd = cm_node->tcp_cntxt.rcv_wnd;
2525 if (ack_seq != loc_seq_num ||
2526 !between(seq, rcv_nxt, (rcv_nxt + rcv_wnd)))
2529 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
2530 "seq number err\n");
2536 irdma_add_conn_est_qh(struct irdma_cm_node *cm_node)
2538 struct irdma_cm_info nfo;
2540 irdma_get_addr_info(cm_node, &nfo);
2541 nfo.qh_qpid = cm_node->iwdev->vsi.ilq->qp_id;
2542 irdma_manage_qhash(cm_node->iwdev, &nfo,
2543 IRDMA_QHASH_TYPE_TCP_ESTABLISHED,
2544 IRDMA_QHASH_MANAGE_TYPE_ADD,
2546 cm_node->qhash_set = true;
2550 * irdma_handle_syn_pkt - is for Passive node
2551 * @cm_node: connection's node
2552 * @rbuf: receive buffer
2555 irdma_handle_syn_pkt(struct irdma_cm_node *cm_node,
2556 struct irdma_puda_buf *rbuf)
2558 struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
2563 optionsize = (tcph->th_off << 2) - sizeof(struct tcphdr);
2564 inc_sequence = ntohl(tcph->th_seq);
2566 switch (cm_node->state) {
2567 case IRDMA_CM_STATE_SYN_SENT:
2568 case IRDMA_CM_STATE_MPAREQ_SENT:
2569 /* Rcvd syn on active open connection */
2570 irdma_active_open_err(cm_node, 1);
2572 case IRDMA_CM_STATE_LISTENING:
2574 if (atomic_read(&cm_node->listener->pend_accepts_cnt) >
2575 cm_node->listener->backlog) {
2576 cm_node->cm_core->stats_backlog_drops++;
2577 irdma_passive_open_err(cm_node, false);
2580 err = irdma_handle_tcp_options(cm_node, tcph, optionsize, 1);
2582 irdma_passive_open_err(cm_node, false);
2586 err = cm_node->cm_core->cm_create_ah(cm_node, false);
2588 irdma_passive_open_err(cm_node, false);
2592 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
2593 cm_node->accept_pend = 1;
2594 atomic_inc(&cm_node->listener->pend_accepts_cnt);
2596 cm_node->state = IRDMA_CM_STATE_SYN_RCVD;
2598 case IRDMA_CM_STATE_CLOSED:
2599 irdma_cleanup_retrans_entry(cm_node);
2600 atomic_inc(&cm_node->refcnt);
2601 irdma_send_reset(cm_node);
2603 case IRDMA_CM_STATE_OFFLOADED:
2604 case IRDMA_CM_STATE_ESTABLISHED:
2605 case IRDMA_CM_STATE_FIN_WAIT1:
2606 case IRDMA_CM_STATE_FIN_WAIT2:
2607 case IRDMA_CM_STATE_MPAREQ_RCVD:
2608 case IRDMA_CM_STATE_LAST_ACK:
2609 case IRDMA_CM_STATE_CLOSING:
2610 case IRDMA_CM_STATE_UNKNOWN:
2617 * irdma_handle_synack_pkt - Process SYN+ACK packet (active side)
2618 * @cm_node: connection's node
2619 * @rbuf: receive buffer
2622 irdma_handle_synack_pkt(struct irdma_cm_node *cm_node,
2623 struct irdma_puda_buf *rbuf)
2625 struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
2630 optionsize = (tcph->th_off << 2) - sizeof(struct tcphdr);
2631 inc_sequence = ntohl(tcph->th_seq);
2632 switch (cm_node->state) {
2633 case IRDMA_CM_STATE_SYN_SENT:
2634 irdma_cleanup_retrans_entry(cm_node);
2636 if (irdma_check_syn(cm_node, tcph)) {
2637 irdma_debug(iwdev_to_idev(cm_node->iwdev),
2638 IRDMA_DEBUG_CM, "check syn fail\n");
2641 cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->th_ack);
2643 err = irdma_handle_tcp_options(cm_node, tcph, optionsize, 0);
2645 irdma_debug(iwdev_to_idev(cm_node->iwdev),
2647 "cm_node=%p tcp_options failed\n",
2651 irdma_cleanup_retrans_entry(cm_node);
2652 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
2653 irdma_send_ack(cm_node); /* ACK for the syn_ack */
2654 err = irdma_send_mpa_request(cm_node);
2656 irdma_debug(iwdev_to_idev(cm_node->iwdev),
2658 "cm_node=%p irdma_send_mpa_request failed\n",
2662 cm_node->state = IRDMA_CM_STATE_MPAREQ_SENT;
2664 case IRDMA_CM_STATE_MPAREQ_RCVD:
2665 irdma_passive_open_err(cm_node, true);
2667 case IRDMA_CM_STATE_LISTENING:
2668 cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->th_ack);
2669 irdma_cleanup_retrans_entry(cm_node);
2670 cm_node->state = IRDMA_CM_STATE_CLOSED;
2671 irdma_send_reset(cm_node);
2673 case IRDMA_CM_STATE_CLOSED:
2674 cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->th_ack);
2675 irdma_cleanup_retrans_entry(cm_node);
2676 atomic_inc(&cm_node->refcnt);
2677 irdma_send_reset(cm_node);
2679 case IRDMA_CM_STATE_ESTABLISHED:
2680 case IRDMA_CM_STATE_FIN_WAIT1:
2681 case IRDMA_CM_STATE_FIN_WAIT2:
2682 case IRDMA_CM_STATE_LAST_ACK:
2683 case IRDMA_CM_STATE_OFFLOADED:
2684 case IRDMA_CM_STATE_CLOSING:
2685 case IRDMA_CM_STATE_UNKNOWN:
2686 case IRDMA_CM_STATE_MPAREQ_SENT:
2693 * irdma_handle_ack_pkt - process packet with ACK
2694 * @cm_node: connection's node
2695 * @rbuf: receive buffer
2698 irdma_handle_ack_pkt(struct irdma_cm_node *cm_node,
2699 struct irdma_puda_buf *rbuf)
2701 struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
2705 u32 datasize = rbuf->datalen;
2707 optionsize = (tcph->th_off << 2) - sizeof(struct tcphdr);
2709 if (irdma_check_seq(cm_node, tcph))
2712 inc_sequence = ntohl(tcph->th_seq);
2713 switch (cm_node->state) {
2714 case IRDMA_CM_STATE_SYN_RCVD:
2715 irdma_cleanup_retrans_entry(cm_node);
2716 ret = irdma_handle_tcp_options(cm_node, tcph, optionsize, 1);
2719 cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->th_ack);
2720 cm_node->state = IRDMA_CM_STATE_ESTABLISHED;
2722 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
2723 irdma_handle_rcv_mpa(cm_node, rbuf);
2726 case IRDMA_CM_STATE_ESTABLISHED:
2727 irdma_cleanup_retrans_entry(cm_node);
2729 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
2730 irdma_handle_rcv_mpa(cm_node, rbuf);
2733 case IRDMA_CM_STATE_MPAREQ_SENT:
2734 cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->th_ack);
2736 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
2737 cm_node->ack_rcvd = false;
2738 irdma_handle_rcv_mpa(cm_node, rbuf);
2740 cm_node->ack_rcvd = true;
2743 case IRDMA_CM_STATE_LISTENING:
2744 irdma_cleanup_retrans_entry(cm_node);
2745 cm_node->state = IRDMA_CM_STATE_CLOSED;
2746 irdma_send_reset(cm_node);
2748 case IRDMA_CM_STATE_CLOSED:
2749 irdma_cleanup_retrans_entry(cm_node);
2750 atomic_inc(&cm_node->refcnt);
2751 irdma_send_reset(cm_node);
2753 case IRDMA_CM_STATE_LAST_ACK:
2754 case IRDMA_CM_STATE_CLOSING:
2755 irdma_cleanup_retrans_entry(cm_node);
2756 cm_node->state = IRDMA_CM_STATE_CLOSED;
2757 irdma_rem_ref_cm_node(cm_node);
2759 case IRDMA_CM_STATE_FIN_WAIT1:
2760 irdma_cleanup_retrans_entry(cm_node);
2761 cm_node->state = IRDMA_CM_STATE_FIN_WAIT2;
2763 case IRDMA_CM_STATE_SYN_SENT:
2764 case IRDMA_CM_STATE_FIN_WAIT2:
2765 case IRDMA_CM_STATE_OFFLOADED:
2766 case IRDMA_CM_STATE_MPAREQ_RCVD:
2767 case IRDMA_CM_STATE_UNKNOWN:
2769 irdma_cleanup_retrans_entry(cm_node);
2777 * irdma_process_pkt - process cm packet
2778 * @cm_node: connection's node
2779 * @rbuf: receive buffer
2782 irdma_process_pkt(struct irdma_cm_node *cm_node,
2783 struct irdma_puda_buf *rbuf)
2785 enum irdma_tcpip_pkt_type pkt_type = IRDMA_PKT_TYPE_UNKNOWN;
2786 struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
2790 if (tcph->th_flags & TH_RST) {
2791 pkt_type = IRDMA_PKT_TYPE_RST;
2792 } else if (tcph->th_flags & TH_SYN) {
2793 pkt_type = IRDMA_PKT_TYPE_SYN;
2794 if (tcph->th_flags & TH_ACK)
2795 pkt_type = IRDMA_PKT_TYPE_SYNACK;
2796 } else if (tcph->th_flags & TH_ACK) {
2797 pkt_type = IRDMA_PKT_TYPE_ACK;
2799 if (tcph->th_flags & TH_FIN)
2803 case IRDMA_PKT_TYPE_SYN:
2804 irdma_handle_syn_pkt(cm_node, rbuf);
2806 case IRDMA_PKT_TYPE_SYNACK:
2807 irdma_handle_synack_pkt(cm_node, rbuf);
2809 case IRDMA_PKT_TYPE_ACK:
2810 err = irdma_handle_ack_pkt(cm_node, rbuf);
2811 if (fin_set && !err)
2812 irdma_handle_fin_pkt(cm_node);
2814 case IRDMA_PKT_TYPE_RST:
2815 irdma_handle_rst_pkt(cm_node, rbuf);
2819 (!irdma_check_seq(cm_node, (struct tcphdr *)rbuf->tcph)))
2820 irdma_handle_fin_pkt(cm_node);
2826 * irdma_make_listen_node - create a listen node with params
2827 * @cm_core: cm's core
2828 * @iwdev: iwarp device structure
2829 * @cm_info: quad info for connection
2831 static struct irdma_cm_listener *
2832 irdma_make_listen_node(struct irdma_cm_core *cm_core,
2833 struct irdma_device *iwdev,
2834 struct irdma_cm_info *cm_info)
2836 struct irdma_cm_listener *listener;
2837 unsigned long flags;
2839 /* cannot have multiple matching listeners */
2840 listener = irdma_find_listener(cm_core, cm_info->loc_addr,
2841 cm_info->loc_port, cm_info->vlan_id,
2842 IRDMA_CM_LISTENER_EITHER_STATE);
2844 listener->listener_state == IRDMA_CM_LISTENER_ACTIVE_STATE) {
2845 atomic_dec(&listener->refcnt);
2851 * create a CM listen node 1/2 node to compare incoming traffic to
2853 listener = kzalloc(sizeof(*listener), GFP_KERNEL);
2856 cm_core->stats_listen_nodes_created++;
2857 memcpy(listener->loc_addr, cm_info->loc_addr,
2858 sizeof(listener->loc_addr));
2859 listener->loc_port = cm_info->loc_port;
2861 INIT_LIST_HEAD(&listener->child_listen_list);
2863 atomic_set(&listener->refcnt, 1);
2865 listener->reused_node = 1;
2868 listener->cm_id = cm_info->cm_id;
2869 listener->ipv4 = cm_info->ipv4;
2870 listener->vlan_id = cm_info->vlan_id;
2871 atomic_set(&listener->pend_accepts_cnt, 0);
2872 listener->cm_core = cm_core;
2873 listener->iwdev = iwdev;
2875 listener->backlog = cm_info->backlog;
2876 listener->listener_state = IRDMA_CM_LISTENER_ACTIVE_STATE;
2878 if (!listener->reused_node) {
2879 spin_lock_irqsave(&cm_core->listen_list_lock, flags);
2880 list_add(&listener->list, &cm_core->listen_list);
2881 spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
2888 * irdma_create_cm_node - make a connection node with params
2889 * @cm_core: cm's core
2890 * @iwdev: iwarp device structure
2891 * @conn_param: connection parameters
2892 * @cm_info: quad info for connection
2893 * @caller_cm_node: pointer to cm_node structure to return
2896 irdma_create_cm_node(struct irdma_cm_core *cm_core,
2897 struct irdma_device *iwdev,
2898 struct iw_cm_conn_param *conn_param,
2899 struct irdma_cm_info *cm_info,
2900 struct irdma_cm_node **caller_cm_node)
2902 struct irdma_cm_node *cm_node;
2903 u16 private_data_len = conn_param->private_data_len;
2904 const void *private_data = conn_param->private_data;
2906 /* create a CM connection node */
2907 cm_node = irdma_make_cm_node(cm_core, iwdev, cm_info, NULL);
2911 /* set our node side to client (active) side */
2912 cm_node->tcp_cntxt.client = 1;
2913 cm_node->tcp_cntxt.rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE;
2915 irdma_record_ird_ord(cm_node, conn_param->ird, conn_param->ord);
2917 cm_node->pdata.size = private_data_len;
2918 cm_node->pdata.addr = cm_node->pdata_buf;
2920 memcpy(cm_node->pdata_buf, private_data, private_data_len);
2921 *caller_cm_node = cm_node;
2927 * irdma_cm_reject - reject and teardown a connection
2928 * @cm_node: connection's node
2929 * @pdata: ptr to private data for reject
2930 * @plen: size of private data
2933 irdma_cm_reject(struct irdma_cm_node *cm_node, const void *pdata,
2939 if (cm_node->tcp_cntxt.client)
2942 irdma_cleanup_retrans_entry(cm_node);
2944 passive_state = atomic_add_return(1, &cm_node->passive_state);
2945 if (passive_state == IRDMA_SEND_RESET_EVENT) {
2946 cm_node->state = IRDMA_CM_STATE_CLOSED;
2947 irdma_rem_ref_cm_node(cm_node);
2951 if (cm_node->state == IRDMA_CM_STATE_LISTENER_DESTROYED) {
2952 irdma_rem_ref_cm_node(cm_node);
2956 ret = irdma_send_mpa_reject(cm_node, pdata, plen);
2960 cm_node->state = IRDMA_CM_STATE_CLOSED;
2961 if (irdma_send_reset(cm_node))
2962 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
2963 "send reset failed\n");
2969 * irdma_cm_close - close of cm connection
2970 * @cm_node: connection's node
2973 irdma_cm_close(struct irdma_cm_node *cm_node)
2975 switch (cm_node->state) {
2976 case IRDMA_CM_STATE_SYN_RCVD:
2977 case IRDMA_CM_STATE_SYN_SENT:
2978 case IRDMA_CM_STATE_ONE_SIDE_ESTABLISHED:
2979 case IRDMA_CM_STATE_ESTABLISHED:
2980 case IRDMA_CM_STATE_ACCEPTING:
2981 case IRDMA_CM_STATE_MPAREQ_SENT:
2982 case IRDMA_CM_STATE_MPAREQ_RCVD:
2983 irdma_cleanup_retrans_entry(cm_node);
2984 irdma_send_reset(cm_node);
2986 case IRDMA_CM_STATE_CLOSE_WAIT:
2987 cm_node->state = IRDMA_CM_STATE_LAST_ACK;
2988 irdma_send_fin(cm_node);
2990 case IRDMA_CM_STATE_FIN_WAIT1:
2991 case IRDMA_CM_STATE_FIN_WAIT2:
2992 case IRDMA_CM_STATE_LAST_ACK:
2993 case IRDMA_CM_STATE_TIME_WAIT:
2994 case IRDMA_CM_STATE_CLOSING:
2996 case IRDMA_CM_STATE_LISTENING:
2997 irdma_cleanup_retrans_entry(cm_node);
2998 irdma_send_reset(cm_node);
3000 case IRDMA_CM_STATE_MPAREJ_RCVD:
3001 case IRDMA_CM_STATE_UNKNOWN:
3002 case IRDMA_CM_STATE_INITED:
3003 case IRDMA_CM_STATE_CLOSED:
3004 case IRDMA_CM_STATE_LISTENER_DESTROYED:
3005 irdma_rem_ref_cm_node(cm_node);
3007 case IRDMA_CM_STATE_OFFLOADED:
3008 if (cm_node->send_entry)
3009 irdma_debug(iwdev_to_idev(cm_node->iwdev),
3011 "CM send_entry in OFFLOADED state\n");
3012 irdma_rem_ref_cm_node(cm_node);
3020 * irdma_receive_ilq - recv an ETHERNET packet, and process it
3022 * @vsi: VSI structure of dev
3023 * @rbuf: receive buffer
3026 irdma_receive_ilq(struct irdma_sc_vsi *vsi, struct irdma_puda_buf *rbuf)
3028 struct irdma_cm_node *cm_node;
3029 struct irdma_cm_listener *listener;
3031 struct ip6_hdr *ip6h;
3032 struct tcphdr *tcph;
3033 struct irdma_cm_info cm_info = {0};
3034 struct irdma_device *iwdev = vsi->back_vsi;
3035 struct irdma_cm_core *cm_core = &iwdev->cm_core;
3036 struct ether_vlan_header *ethh;
3039 /* if vlan, then maclen = 18 else 14 */
3040 iph = (struct ip *)rbuf->iph;
3041 irdma_debug_buf(vsi->dev, IRDMA_DEBUG_ILQ, "RECEIVE ILQ BUFFER",
3042 rbuf->mem.va, rbuf->totallen);
3043 if (iwdev->rf->sc_dev.hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
3044 if (rbuf->vlan_valid) {
3045 vtag = rbuf->vlan_id;
3046 cm_info.user_pri = (vtag & EVL_PRI_MASK) >>
3048 cm_info.vlan_id = vtag & EVL_VLID_MASK;
3050 cm_info.vlan_id = 0xFFFF;
3053 ethh = rbuf->mem.va;
3055 if (ethh->evl_proto == htons(ETH_P_8021Q)) {
3056 vtag = ntohs(ethh->evl_tag);
3057 cm_info.user_pri = (vtag & EVL_PRI_MASK) >>
3059 cm_info.vlan_id = vtag & EVL_VLID_MASK;
3060 irdma_debug(iwdev_to_idev(cm_core->iwdev),
3061 IRDMA_DEBUG_CM, "vlan_id=%d\n",
3064 cm_info.vlan_id = 0xFFFF;
3067 tcph = (struct tcphdr *)rbuf->tcph;
3070 cm_info.loc_addr[0] = ntohl(iph->ip_dst.s_addr);
3071 cm_info.rem_addr[0] = ntohl(iph->ip_src.s_addr);
3072 cm_info.ipv4 = true;
3073 cm_info.tos = iph->ip_tos;
3075 ip6h = (struct ip6_hdr *)rbuf->iph;
3076 irdma_copy_ip_ntohl(cm_info.loc_addr,
3077 ip6h->ip6_dst.__u6_addr.__u6_addr32);
3078 irdma_copy_ip_ntohl(cm_info.rem_addr,
3079 ip6h->ip6_src.__u6_addr.__u6_addr32);
3080 cm_info.ipv4 = false;
3081 cm_info.tos = (ip6h->ip6_vfc << 4) | ip6h->ip6_flow;
3083 cm_info.loc_port = ntohs(tcph->th_dport);
3084 cm_info.rem_port = ntohs(tcph->th_sport);
3085 cm_node = irdma_find_node(cm_core, cm_info.rem_port, cm_info.rem_addr,
3086 cm_info.loc_port, cm_info.loc_addr, cm_info.vlan_id);
3090 * Only type of packet accepted are for the PASSIVE open (syn only)
3092 if (!(tcph->th_flags & TH_SYN) || tcph->th_flags & TH_ACK)
3095 listener = irdma_find_listener(cm_core,
3099 IRDMA_CM_LISTENER_ACTIVE_STATE);
3101 cm_info.cm_id = NULL;
3102 irdma_debug(iwdev_to_idev(cm_core->iwdev),
3103 IRDMA_DEBUG_CM, "no listener found\n");
3107 cm_info.cm_id = listener->cm_id;
3108 cm_node = irdma_make_cm_node(cm_core, iwdev, &cm_info,
3111 irdma_debug(iwdev_to_idev(cm_core->iwdev),
3112 IRDMA_DEBUG_CM, "allocate node failed\n");
3113 atomic_dec(&listener->refcnt);
3117 if (!(tcph->th_flags & (TH_RST | TH_FIN))) {
3118 cm_node->state = IRDMA_CM_STATE_LISTENING;
3120 irdma_rem_ref_cm_node(cm_node);
3124 atomic_inc(&cm_node->refcnt);
3125 } else if (cm_node->state == IRDMA_CM_STATE_OFFLOADED) {
3126 irdma_rem_ref_cm_node(cm_node);
3130 irdma_process_pkt(cm_node, rbuf);
3131 irdma_rem_ref_cm_node(cm_node);
3135 irdma_add_qh(struct irdma_cm_node *cm_node, bool active)
3138 irdma_add_conn_est_qh(cm_node);
3143 irdma_cm_free_ah_nop(struct irdma_cm_node *cm_node)
3148 * irdma_setup_cm_core - setup top level instance of a cm core
3149 * @iwdev: iwarp device structure
3150 * @rdma_ver: HW version
3153 irdma_setup_cm_core(struct irdma_device *iwdev, u8 rdma_ver)
3155 struct irdma_cm_core *cm_core = &iwdev->cm_core;
3157 cm_core->iwdev = iwdev;
3158 cm_core->dev = &iwdev->rf->sc_dev;
3160 /* Handles CM event work items send to Iwarp core */
3161 cm_core->event_wq = alloc_ordered_workqueue("iwarp-event-wq", 0);
3162 if (!cm_core->event_wq)
3165 INIT_LIST_HEAD(&cm_core->listen_list);
3167 timer_setup(&cm_core->tcp_timer, irdma_cm_timer_tick, 0);
3169 spin_lock_init(&cm_core->ht_lock);
3170 spin_lock_init(&cm_core->listen_list_lock);
3171 spin_lock_init(&cm_core->apbvt_lock);
3174 cm_core->form_cm_frame = irdma_form_uda_cm_frame;
3175 cm_core->cm_create_ah = irdma_add_qh;
3176 cm_core->cm_free_ah = irdma_cm_free_ah_nop;
3180 cm_core->form_cm_frame = irdma_form_ah_cm_frame;
3181 cm_core->cm_create_ah = irdma_cm_create_ah;
3182 cm_core->cm_free_ah = irdma_cm_free_ah;
3189 * irdma_cleanup_cm_core - deallocate a top level instance of a
3191 * @cm_core: cm's core
3194 irdma_cleanup_cm_core(struct irdma_cm_core *cm_core)
3196 unsigned long flags;
3201 spin_lock_irqsave(&cm_core->ht_lock, flags);
3202 if (timer_pending(&cm_core->tcp_timer))
3203 del_timer_sync(&cm_core->tcp_timer);
3204 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
3206 destroy_workqueue(cm_core->event_wq);
3207 cm_core->dev->ws_reset(&cm_core->iwdev->vsi);
3211 * irdma_init_tcp_ctx - setup qp context
3212 * @cm_node: connection's node
3213 * @tcp_info: offload info for tcp
3214 * @iwqp: associate qp for the connection
3217 irdma_init_tcp_ctx(struct irdma_cm_node *cm_node,
3218 struct irdma_tcp_offload_info *tcp_info,
3219 struct irdma_qp *iwqp)
3221 tcp_info->ipv4 = cm_node->ipv4;
3222 tcp_info->drop_ooo_seg = !iwqp->iwdev->iw_ooo;
3223 tcp_info->wscale = true;
3224 tcp_info->ignore_tcp_opt = true;
3225 tcp_info->ignore_tcp_uns_opt = true;
3226 tcp_info->no_nagle = false;
3228 tcp_info->ttl = IRDMA_DEFAULT_TTL;
3229 tcp_info->rtt_var = IRDMA_DEFAULT_RTT_VAR;
3230 tcp_info->ss_thresh = IRDMA_DEFAULT_SS_THRESH;
3231 tcp_info->rexmit_thresh = IRDMA_DEFAULT_REXMIT_THRESH;
3233 tcp_info->tcp_state = IRDMA_TCP_STATE_ESTABLISHED;
3234 tcp_info->snd_wscale = cm_node->tcp_cntxt.snd_wscale;
3235 tcp_info->rcv_wscale = cm_node->tcp_cntxt.rcv_wscale;
3237 tcp_info->snd_nxt = cm_node->tcp_cntxt.loc_seq_num;
3238 tcp_info->snd_wnd = cm_node->tcp_cntxt.snd_wnd;
3239 tcp_info->rcv_nxt = cm_node->tcp_cntxt.rcv_nxt;
3240 tcp_info->snd_max = cm_node->tcp_cntxt.loc_seq_num;
3242 tcp_info->snd_una = cm_node->tcp_cntxt.loc_seq_num;
3243 tcp_info->cwnd = 2 * cm_node->tcp_cntxt.mss;
3244 tcp_info->snd_wl1 = cm_node->tcp_cntxt.rcv_nxt;
3245 tcp_info->snd_wl2 = cm_node->tcp_cntxt.loc_seq_num;
3246 tcp_info->max_snd_window = cm_node->tcp_cntxt.max_snd_wnd;
3247 tcp_info->rcv_wnd = cm_node->tcp_cntxt.rcv_wnd
3248 << cm_node->tcp_cntxt.rcv_wscale;
3250 tcp_info->flow_label = 0;
3251 tcp_info->snd_mss = (u32)cm_node->tcp_cntxt.mss;
3252 tcp_info->tos = cm_node->tos;
3253 if (cm_node->vlan_id < VLAN_N_VID) {
3254 tcp_info->insert_vlan_tag = true;
3255 tcp_info->vlan_tag = cm_node->vlan_id;
3256 tcp_info->vlan_tag |= cm_node->user_pri << VLAN_PRIO_SHIFT;
3258 tcp_info->src_port = cm_node->loc_port;
3259 tcp_info->dst_port = cm_node->rem_port;
3260 tcp_info->arp_idx = (u16)irdma_arp_table(iwqp->iwdev->rf,
3261 cm_node->rem_addr, NULL,
3263 if (cm_node->ipv4) {
3264 tcp_info->dest_ip_addr[3] = cm_node->rem_addr[0];
3265 tcp_info->local_ipaddr[3] = cm_node->loc_addr[0];
3267 memcpy(tcp_info->dest_ip_addr, cm_node->rem_addr,
3268 sizeof(tcp_info->dest_ip_addr));
3269 memcpy(tcp_info->local_ipaddr, cm_node->loc_addr,
3270 sizeof(tcp_info->local_ipaddr));
3275 * irdma_cm_init_tsa_conn - setup qp for RTS
3276 * @iwqp: associate qp for the connection
3277 * @cm_node: connection's node
3280 irdma_cm_init_tsa_conn(struct irdma_qp *iwqp,
3281 struct irdma_cm_node *cm_node)
3283 struct irdma_iwarp_offload_info *iwarp_info;
3284 struct irdma_qp_host_ctx_info *ctx_info;
3286 iwarp_info = &iwqp->iwarp_info;
3287 ctx_info = &iwqp->ctx_info;
3289 ctx_info->tcp_info = &iwqp->tcp_info;
3290 ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
3291 ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
3293 iwarp_info->ord_size = cm_node->ord_size;
3294 iwarp_info->ird_size = cm_node->ird_size;
3295 iwarp_info->rd_en = true;
3296 iwarp_info->rdmap_ver = 1;
3297 iwarp_info->ddp_ver = 1;
3298 iwarp_info->pd_id = iwqp->iwpd->sc_pd.pd_id;
3300 ctx_info->tcp_info_valid = true;
3301 ctx_info->iwarp_info_valid = true;
3302 ctx_info->user_pri = cm_node->user_pri;
3304 irdma_init_tcp_ctx(cm_node, &iwqp->tcp_info, iwqp);
3305 if (cm_node->snd_mark_en) {
3306 iwarp_info->snd_mark_en = true;
3307 iwarp_info->snd_mark_offset = (iwqp->tcp_info.snd_nxt & SNDMARKER_SEQNMASK) +
3311 cm_node->state = IRDMA_CM_STATE_OFFLOADED;
3312 iwqp->tcp_info.tcp_state = IRDMA_TCP_STATE_ESTABLISHED;
3313 iwqp->tcp_info.src_mac_addr_idx = iwqp->iwdev->mac_ip_table_idx;
3315 if (cm_node->rcv_mark_en) {
3316 iwarp_info->rcv_mark_en = true;
3317 iwarp_info->align_hdrs = true;
3320 irdma_sc_qp_setctx(&iwqp->sc_qp, iwqp->host_ctx.va, ctx_info);
3322 /* once tcp_info is set, no need to do it again */
3323 ctx_info->tcp_info_valid = false;
3324 ctx_info->iwarp_info_valid = false;
3328 * irdma_cm_disconn - when a connection is being closed
3329 * @iwqp: associated qp for the connection
3332 irdma_cm_disconn(struct irdma_qp *iwqp)
3334 struct irdma_device *iwdev = iwqp->iwdev;
3335 struct disconn_work *work;
3336 unsigned long flags;
3338 work = kzalloc(sizeof(*work), GFP_ATOMIC);
3342 spin_lock_irqsave(&iwdev->rf->qptable_lock, flags);
3343 if (!iwdev->rf->qp_table[iwqp->ibqp.qp_num]) {
3344 spin_unlock_irqrestore(&iwdev->rf->qptable_lock, flags);
3345 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
3346 "qp_id %d is already freed\n", iwqp->ibqp.qp_num);
3350 irdma_qp_add_ref(&iwqp->ibqp);
3351 spin_unlock_irqrestore(&iwdev->rf->qptable_lock, flags);
3354 INIT_WORK(&work->work, irdma_disconnect_worker);
3355 queue_work(iwdev->cleanup_wq, &work->work);
3359 * irdma_qp_disconnect - free qp and close cm
3360 * @iwqp: associate qp for the connection
3363 irdma_qp_disconnect(struct irdma_qp *iwqp)
3365 struct irdma_device *iwdev = iwqp->iwdev;
3367 iwqp->active_conn = 0;
3368 /* close the CM node down if it is still active */
3369 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
3370 "Call close API\n");
3371 irdma_cm_close(iwqp->cm_node);
3375 * irdma_cm_disconn_true - called by worker thread to disconnect qp
3376 * @iwqp: associate qp for the connection
3379 irdma_cm_disconn_true(struct irdma_qp *iwqp)
3381 struct iw_cm_id *cm_id;
3382 struct irdma_device *iwdev;
3383 struct irdma_sc_qp *qp = &iwqp->sc_qp;
3385 u8 original_hw_tcp_state;
3386 u8 original_ibqp_state;
3387 int disconn_status = 0;
3388 int issue_disconn = 0;
3389 int issue_close = 0;
3390 int issue_flush = 0;
3391 unsigned long flags;
3394 iwdev = iwqp->iwdev;
3395 spin_lock_irqsave(&iwqp->lock, flags);
3396 if (rdma_protocol_roce(&iwdev->ibdev, 1)) {
3397 struct ib_qp_attr attr;
3399 if (iwqp->flush_issued || iwqp->sc_qp.qp_uk.destroy_pending) {
3400 spin_unlock_irqrestore(&iwqp->lock, flags);
3404 spin_unlock_irqrestore(&iwqp->lock, flags);
3406 attr.qp_state = IB_QPS_ERR;
3407 irdma_modify_qp_roce(&iwqp->ibqp, &attr, IB_QP_STATE, NULL);
3408 irdma_ib_qp_event(iwqp, qp->event_type);
3412 cm_id = iwqp->cm_id;
3413 /* make sure we havent already closed this connection */
3415 spin_unlock_irqrestore(&iwqp->lock, flags);
3419 original_hw_tcp_state = iwqp->hw_tcp_state;
3420 original_ibqp_state = iwqp->ibqp_state;
3421 last_ae = iwqp->last_aeq;
3423 if (qp->term_flags) {
3427 irdma_terminate_del_timer(qp);
3428 if (!iwqp->flush_issued) {
3429 iwqp->flush_issued = 1;
3432 } else if ((original_hw_tcp_state == IRDMA_TCP_STATE_CLOSE_WAIT) ||
3433 ((original_ibqp_state == IB_QPS_RTS) &&
3434 (last_ae == IRDMA_AE_LLP_CONNECTION_RESET))) {
3436 if (last_ae == IRDMA_AE_LLP_CONNECTION_RESET)
3437 disconn_status = -ECONNRESET;
3440 if ((original_hw_tcp_state == IRDMA_TCP_STATE_CLOSED ||
3441 original_hw_tcp_state == IRDMA_TCP_STATE_TIME_WAIT ||
3442 last_ae == IRDMA_AE_RDMAP_ROE_BAD_LLP_CLOSE ||
3443 last_ae == IRDMA_AE_BAD_CLOSE ||
3444 last_ae == IRDMA_AE_LLP_CONNECTION_RESET || iwdev->rf->reset)) {
3448 if (!iwqp->flush_issued) {
3449 iwqp->flush_issued = 1;
3454 spin_unlock_irqrestore(&iwqp->lock, flags);
3455 if (issue_flush && !iwqp->sc_qp.qp_uk.destroy_pending) {
3456 if (!iwqp->user_mode)
3457 queue_delayed_work(iwqp->iwdev->cleanup_wq,
3459 msecs_to_jiffies(IRDMA_FLUSH_DELAY_MS));
3460 irdma_flush_wqes(iwqp, IRDMA_FLUSH_SQ | IRDMA_FLUSH_RQ |
3464 irdma_ib_qp_event(iwqp, qp->event_type);
3467 if (!cm_id || !cm_id->event_handler)
3470 spin_lock_irqsave(&iwdev->cm_core.ht_lock, flags);
3471 if (!iwqp->cm_node) {
3472 spin_unlock_irqrestore(&iwdev->cm_core.ht_lock, flags);
3475 atomic_inc(&iwqp->cm_node->refcnt);
3477 spin_unlock_irqrestore(&iwdev->cm_core.ht_lock, flags);
3479 if (issue_disconn) {
3480 err = irdma_send_cm_event(iwqp->cm_node, cm_id,
3481 IW_CM_EVENT_DISCONNECT,
3484 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
3485 "disconnect event failed: - cm_id = %p\n",
3489 cm_id->provider_data = iwqp;
3490 err = irdma_send_cm_event(iwqp->cm_node, cm_id,
3491 IW_CM_EVENT_CLOSE, 0);
3493 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
3494 "close event failed: - cm_id = %p\n",
3496 irdma_qp_disconnect(iwqp);
3498 irdma_rem_ref_cm_node(iwqp->cm_node);
3502 * irdma_disconnect_worker - worker for connection close
3503 * @work: points or disconn structure
3506 irdma_disconnect_worker(struct work_struct *work)
3508 struct disconn_work *dwork = container_of(work, struct disconn_work, work);
3509 struct irdma_qp *iwqp = dwork->iwqp;
3512 irdma_cm_disconn_true(iwqp);
3513 irdma_qp_rem_ref(&iwqp->ibqp);
3517 * irdma_free_lsmm_rsrc - free lsmm memory and deregister
3518 * @iwqp: associate qp for the connection
3521 irdma_free_lsmm_rsrc(struct irdma_qp *iwqp)
3523 struct irdma_device *iwdev;
3525 iwdev = iwqp->iwdev;
3527 if (iwqp->ietf_mem.va) {
3529 kc_free_lsmm_dereg_mr(iwdev, iwqp);
3530 irdma_free_dma_mem(iwdev->rf->sc_dev.hw,
3532 iwqp->ietf_mem.va = NULL;
3537 * irdma_accept - registered call for connection to be accepted
3538 * @cm_id: cm information for passive connection
3539 * @conn_param: accpet parameters
3542 irdma_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
3545 struct irdma_qp *iwqp;
3546 struct irdma_device *iwdev;
3547 struct irdma_sc_dev *dev;
3548 struct irdma_cm_node *cm_node;
3549 struct ib_qp_attr attr = {0};
3552 struct irdma_pd *iwpd;
3554 struct irdma_kmem_info accept;
3559 ibqp = irdma_get_qp(cm_id->device, conn_param->qpn);
3563 iwqp = to_iwqp(ibqp);
3564 iwdev = iwqp->iwdev;
3565 dev = &iwdev->rf->sc_dev;
3566 cm_node = cm_id->provider_data;
3568 if (((struct sockaddr_in *)&cm_id->local_addr)->sin_family == AF_INET) {
3569 cm_node->ipv4 = true;
3570 cm_node->vlan_id = irdma_get_vlan_ipv4(cm_node->loc_addr);
3572 cm_node->ipv4 = false;
3573 irdma_netdev_vlan_ipv6(cm_node->loc_addr, &cm_node->vlan_id,
3576 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
3577 "Accept vlan_id=%d\n", cm_node->vlan_id);
3579 if (cm_node->state == IRDMA_CM_STATE_LISTENER_DESTROYED) {
3584 passive_state = atomic_add_return(1, &cm_node->passive_state);
3585 if (passive_state == IRDMA_SEND_RESET_EVENT) {
3590 buf_len = conn_param->private_data_len + IRDMA_MAX_IETF_SIZE;
3591 iwqp->ietf_mem.size = buf_len;
3592 iwqp->ietf_mem.va = irdma_allocate_dma_mem(dev->hw, &iwqp->ietf_mem,
3593 iwqp->ietf_mem.size, 1);
3594 if (!iwqp->ietf_mem.va) {
3599 cm_node->pdata.size = conn_param->private_data_len;
3600 accept.addr = iwqp->ietf_mem.va;
3601 accept.size = irdma_cm_build_mpa_frame(cm_node, &accept, MPA_KEY_REPLY);
3602 memcpy((u8 *)accept.addr + accept.size, conn_param->private_data,
3603 conn_param->private_data_len);
3605 if (cm_node->dev->ws_add(iwqp->sc_qp.vsi, cm_node->user_pri)) {
3609 iwqp->sc_qp.user_pri = cm_node->user_pri;
3610 irdma_qp_add_qos(&iwqp->sc_qp);
3611 if (cm_node->dev->hw_attrs.uk_attrs.hw_rev == IRDMA_GEN_2)
3612 iwdev->rf->check_fc(&iwdev->vsi, &iwqp->sc_qp);
3613 /* setup our first outgoing iWarp send WQE (the IETF frame response) */
3615 tagged_offset = (uintptr_t)iwqp->ietf_mem.va;
3616 ibmr = irdma_reg_phys_mr(&iwpd->ibpd, iwqp->ietf_mem.pa, buf_len,
3617 IB_ACCESS_LOCAL_WRITE, &tagged_offset);
3623 ibmr->pd = &iwpd->ibpd;
3624 ibmr->device = iwpd->ibpd.device;
3625 iwqp->lsmm_mr = ibmr;
3627 iwqp->sc_qp.qp_uk.sq_base = kmap_local_page(iwqp->page);
3629 cm_node->lsmm_size = accept.size + conn_param->private_data_len;
3630 irdma_sc_send_lsmm(&iwqp->sc_qp, iwqp->ietf_mem.va, cm_node->lsmm_size,
3634 kunmap_local(iwqp->sc_qp.qp_uk.sq_base);
3636 iwqp->cm_id = cm_id;
3637 cm_node->cm_id = cm_id;
3639 cm_id->provider_data = iwqp;
3640 iwqp->active_conn = 0;
3641 iwqp->cm_node = cm_node;
3642 cm_node->iwqp = iwqp;
3643 irdma_cm_init_tsa_conn(iwqp, cm_node);
3644 irdma_qp_add_ref(&iwqp->ibqp);
3645 cm_id->add_ref(cm_id);
3647 attr.qp_state = IB_QPS_RTS;
3648 cm_node->qhash_set = false;
3649 cm_node->cm_core->cm_free_ah(cm_node);
3651 irdma_modify_qp(&iwqp->ibqp, &attr, IB_QP_STATE, NULL);
3652 if (dev->hw_attrs.uk_attrs.feature_flags & IRDMA_FEATURE_RTS_AE) {
3653 wait_ret = wait_event_interruptible_timeout(iwqp->waitq,
3657 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
3658 "Slow Connection: cm_node=%p, loc_port=%d, rem_port=%d, cm_id=%p\n",
3659 cm_node, cm_node->loc_port,
3660 cm_node->rem_port, cm_node->cm_id);
3666 irdma_send_cm_event(cm_node, cm_id, IW_CM_EVENT_ESTABLISHED, 0);
3667 cm_node->accelerated = true;
3668 complete(&cm_node->establish_comp);
3670 if (cm_node->accept_pend) {
3671 atomic_dec(&cm_node->listener->pend_accepts_cnt);
3672 cm_node->accept_pend = 0;
3675 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
3676 "rem_port=0x%04x, loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4 cm_node=%p cm_id=%p qp_id = %d\n\n",
3677 cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr,
3678 cm_node->loc_addr, cm_node, cm_id, ibqp->qp_num);
3679 cm_node->cm_core->stats_accepts++;
3683 irdma_free_lsmm_rsrc(iwqp);
3684 irdma_rem_ref_cm_node(cm_node);
3690 * irdma_reject - registered call for connection to be rejected
3691 * @cm_id: cm information for passive connection
3692 * @pdata: private data to be sent
3693 * @pdata_len: private data length
3696 irdma_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
3698 struct irdma_device *iwdev;
3699 struct irdma_cm_node *cm_node;
3701 cm_node = cm_id->provider_data;
3702 cm_node->pdata.size = pdata_len;
3704 iwdev = to_iwdev(cm_id->device);
3708 cm_node->cm_core->stats_rejects++;
3710 if (pdata_len + sizeof(struct ietf_mpa_v2) > IRDMA_MAX_CM_BUF)
3713 return irdma_cm_reject(cm_node, pdata, pdata_len);
3717 * irdma_connect - registered call for connection to be established
3718 * @cm_id: cm information for passive connection
3719 * @conn_param: Information about the connection
3722 irdma_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
3725 struct irdma_qp *iwqp;
3726 struct irdma_device *iwdev;
3727 struct irdma_cm_node *cm_node;
3728 struct irdma_cm_info cm_info;
3729 struct sockaddr_in *laddr;
3730 struct sockaddr_in *raddr;
3731 struct sockaddr_in6 *laddr6;
3732 struct sockaddr_in6 *raddr6;
3735 ibqp = irdma_get_qp(cm_id->device, conn_param->qpn);
3738 iwqp = to_iwqp(ibqp);
3741 iwdev = iwqp->iwdev;
3745 laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
3746 raddr = (struct sockaddr_in *)&cm_id->m_remote_addr;
3747 laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
3748 raddr6 = (struct sockaddr_in6 *)&cm_id->m_remote_addr;
3750 if (!(laddr->sin_port) || !(raddr->sin_port))
3753 iwqp->active_conn = 1;
3755 cm_id->provider_data = iwqp;
3757 /* set up the connection params for the node */
3758 if (cm_id->remote_addr.ss_family == AF_INET) {
3759 if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV4)
3762 cm_info.ipv4 = true;
3763 memset(cm_info.loc_addr, 0, sizeof(cm_info.loc_addr));
3764 memset(cm_info.rem_addr, 0, sizeof(cm_info.rem_addr));
3765 cm_info.loc_addr[0] = ntohl(laddr->sin_addr.s_addr);
3766 cm_info.rem_addr[0] = ntohl(raddr->sin_addr.s_addr);
3767 cm_info.loc_port = ntohs(laddr->sin_port);
3768 cm_info.rem_port = ntohs(raddr->sin_port);
3769 cm_info.vlan_id = irdma_get_vlan_ipv4(cm_info.loc_addr);
3771 if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV6)
3774 cm_info.ipv4 = false;
3775 irdma_copy_ip_ntohl(cm_info.loc_addr,
3776 laddr6->sin6_addr.__u6_addr.__u6_addr32);
3777 irdma_copy_ip_ntohl(cm_info.rem_addr,
3778 raddr6->sin6_addr.__u6_addr.__u6_addr32);
3779 cm_info.loc_port = ntohs(laddr6->sin6_port);
3780 cm_info.rem_port = ntohs(raddr6->sin6_port);
3781 irdma_netdev_vlan_ipv6(cm_info.loc_addr, &cm_info.vlan_id,
3784 cm_info.cm_id = cm_id;
3785 cm_info.qh_qpid = iwdev->vsi.ilq->qp_id;
3786 cm_info.tos = cm_id->tos;
3787 if (iwdev->vsi.dscp_mode)
3789 iwqp->sc_qp.vsi->dscp_map[irdma_tos2dscp(cm_info.tos)];
3791 cm_info.user_pri = rt_tos2priority(cm_id->tos);
3793 if (iwqp->sc_qp.dev->ws_add(iwqp->sc_qp.vsi, cm_info.user_pri))
3795 iwqp->sc_qp.user_pri = cm_info.user_pri;
3796 irdma_qp_add_qos(&iwqp->sc_qp);
3797 if (iwdev->rf->sc_dev.hw_attrs.uk_attrs.hw_rev == IRDMA_GEN_2)
3798 iwdev->rf->check_fc(&iwdev->vsi, &iwqp->sc_qp);
3799 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_DCB,
3800 "TOS:[%d] UP:[%d]\n", cm_id->tos, cm_info.user_pri);
3802 ret = irdma_create_cm_node(&iwdev->cm_core, iwdev, conn_param, &cm_info,
3806 ret = cm_node->cm_core->cm_create_ah(cm_node, true);
3809 if (irdma_manage_qhash(iwdev, &cm_info,
3810 IRDMA_QHASH_TYPE_TCP_ESTABLISHED,
3811 IRDMA_QHASH_MANAGE_TYPE_ADD, NULL, true)) {
3815 cm_node->qhash_set = true;
3817 cm_node->apbvt_entry = irdma_add_apbvt(iwdev, cm_info.loc_port);
3818 if (!cm_node->apbvt_entry) {
3823 cm_node->apbvt_set = true;
3824 iwqp->cm_node = cm_node;
3825 cm_node->iwqp = iwqp;
3826 iwqp->cm_id = cm_id;
3827 irdma_qp_add_ref(&iwqp->ibqp);
3828 cm_id->add_ref(cm_id);
3830 if (cm_node->state != IRDMA_CM_STATE_OFFLOADED) {
3831 cm_node->state = IRDMA_CM_STATE_SYN_SENT;
3832 ret = irdma_send_syn(cm_node, 0);
3837 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
3838 "rem_port=0x%04x, loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4 cm_node=%p cm_id=%p qp_id = %d\n\n",
3839 cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr,
3840 cm_node->loc_addr, cm_node, cm_id, ibqp->qp_num);
3846 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
3847 "connect() FAILED: dest addr=%pI4",
3850 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
3851 "connect() FAILED: dest addr=%pI6",
3853 irdma_rem_ref_cm_node(cm_node);
3854 iwdev->cm_core.stats_connect_errs++;
3860 * irdma_create_listen - registered call creating listener
3861 * @cm_id: cm information for passive connection
3862 * @backlog: to max accept pending count
3865 irdma_create_listen(struct iw_cm_id *cm_id, int backlog)
3867 struct irdma_device *iwdev;
3868 struct irdma_cm_listener *cm_listen_node;
3869 struct irdma_cm_info cm_info = {0};
3870 struct sockaddr_in *laddr;
3871 struct sockaddr_in6 *laddr6;
3872 bool wildcard = false;
3875 iwdev = to_iwdev(cm_id->device);
3879 laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
3880 laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
3881 cm_info.qh_qpid = iwdev->vsi.ilq->qp_id;
3883 if (laddr->sin_family == AF_INET) {
3884 if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV4)
3887 cm_info.ipv4 = true;
3888 cm_info.loc_addr[0] = ntohl(laddr->sin_addr.s_addr);
3889 cm_info.loc_port = ntohs(laddr->sin_port);
3891 if (laddr->sin_addr.s_addr != htonl(INADDR_ANY)) {
3892 cm_info.vlan_id = irdma_get_vlan_ipv4(cm_info.loc_addr);
3894 cm_info.vlan_id = 0xFFFF;
3898 if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV6)
3901 cm_info.ipv4 = false;
3902 irdma_copy_ip_ntohl(cm_info.loc_addr,
3903 laddr6->sin6_addr.__u6_addr.__u6_addr32);
3904 cm_info.loc_port = ntohs(laddr6->sin6_port);
3905 if (!IN6_IS_ADDR_UNSPECIFIED(&laddr6->sin6_addr)) {
3906 irdma_netdev_vlan_ipv6(cm_info.loc_addr,
3907 &cm_info.vlan_id, NULL);
3909 cm_info.vlan_id = 0xFFFF;
3914 if (cm_info.vlan_id >= VLAN_N_VID && iwdev->dcb_vlan_mode)
3915 cm_info.vlan_id = 0;
3916 cm_info.backlog = backlog;
3917 cm_info.cm_id = cm_id;
3919 cm_listen_node = irdma_make_listen_node(&iwdev->cm_core, iwdev,
3921 if (!cm_listen_node) {
3922 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
3923 "cm_listen_node == NULL\n");
3927 cm_id->provider_data = cm_listen_node;
3929 cm_listen_node->tos = cm_id->tos;
3930 if (iwdev->vsi.dscp_mode)
3931 cm_listen_node->user_pri =
3932 iwdev->vsi.dscp_map[irdma_tos2dscp(cm_id->tos)];
3934 cm_listen_node->user_pri = rt_tos2priority(cm_id->tos);
3935 cm_info.user_pri = cm_listen_node->user_pri;
3936 if (!cm_listen_node->reused_node) {
3938 err = irdma_add_mqh(iwdev, &cm_info, cm_listen_node);
3942 err = irdma_manage_qhash(iwdev, &cm_info,
3943 IRDMA_QHASH_TYPE_TCP_SYN,
3944 IRDMA_QHASH_MANAGE_TYPE_ADD,
3949 cm_listen_node->qhash_set = true;
3952 cm_listen_node->apbvt_entry = irdma_add_apbvt(iwdev,
3954 if (!cm_listen_node->apbvt_entry)
3957 cm_id->add_ref(cm_id);
3958 cm_listen_node->cm_core->stats_listen_created++;
3959 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
3960 "loc_port=0x%04x loc_addr=%pI4 cm_listen_node=%p cm_id=%p qhash_set=%d vlan_id=%d\n",
3961 cm_listen_node->loc_port, cm_listen_node->loc_addr, cm_listen_node, cm_listen_node->cm_id,
3962 cm_listen_node->qhash_set, cm_listen_node->vlan_id);
3968 irdma_cm_del_listen(&iwdev->cm_core, cm_listen_node, false);
3974 * irdma_destroy_listen - registered call to destroy listener
3975 * @cm_id: cm information for passive connection
3978 irdma_destroy_listen(struct iw_cm_id *cm_id)
3980 struct irdma_device *iwdev;
3982 iwdev = to_iwdev(cm_id->device);
3983 if (cm_id->provider_data)
3984 irdma_cm_del_listen(&iwdev->cm_core, cm_id->provider_data,
3987 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
3988 "cm_id->provider_data was NULL\n");
3990 cm_id->rem_ref(cm_id);
3996 * irdma_teardown_list_prep - add conn nodes slated for tear down to list
3997 * @cm_core: cm's core
3998 * @teardown_list: a list to which cm_node will be selected
3999 * @ipaddr: pointer to ip address
4000 * @nfo: pointer to cm_info structure instance
4001 * @disconnect_all: flag indicating disconnect all QPs
4004 irdma_teardown_list_prep(struct irdma_cm_core *cm_core,
4005 struct list_head *teardown_list,
4007 struct irdma_cm_info *nfo,
4008 bool disconnect_all)
4010 struct irdma_cm_node *cm_node;
4013 HASH_FOR_EACH_RCU(cm_core->cm_hash_tbl, bkt, cm_node, list) {
4014 if ((disconnect_all ||
4015 (nfo->vlan_id == cm_node->vlan_id &&
4016 !memcmp(cm_node->loc_addr, ipaddr, nfo->ipv4 ? 4 : 16))) &&
4017 atomic_inc_not_zero(&cm_node->refcnt))
4018 list_add(&cm_node->teardown_entry, teardown_list);
4023 * irdma_cm_event_connected - handle connected active node
4024 * @event: the info for cm_node of connection
4027 irdma_cm_event_connected(struct irdma_cm_event *event)
4029 struct irdma_qp *iwqp;
4030 struct irdma_device *iwdev;
4031 struct irdma_cm_node *cm_node;
4032 struct irdma_sc_dev *dev;
4033 struct ib_qp_attr attr = {0};
4034 struct iw_cm_id *cm_id;
4039 cm_node = event->cm_node;
4040 cm_id = cm_node->cm_id;
4041 iwqp = cm_id->provider_data;
4042 iwdev = iwqp->iwdev;
4043 dev = &iwdev->rf->sc_dev;
4044 if (iwqp->sc_qp.qp_uk.destroy_pending) {
4045 status = -ETIMEDOUT;
4049 irdma_cm_init_tsa_conn(iwqp, cm_node);
4050 read0 = (cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO);
4052 iwqp->sc_qp.qp_uk.sq_base = kmap_local_page(iwqp->page);
4053 irdma_sc_send_rtt(&iwqp->sc_qp, read0);
4055 kunmap_local(iwqp->sc_qp.qp_uk.sq_base);
4057 attr.qp_state = IB_QPS_RTS;
4058 cm_node->qhash_set = false;
4059 irdma_modify_qp(&iwqp->ibqp, &attr, IB_QP_STATE, NULL);
4060 if (dev->hw_attrs.uk_attrs.feature_flags & IRDMA_FEATURE_RTS_AE) {
4061 wait_ret = wait_event_interruptible_timeout(iwqp->waitq,
4065 irdma_debug(iwdev_to_idev(iwdev), IRDMA_DEBUG_CM,
4066 "Slow Connection: cm_node=%p, loc_port=%d, rem_port=%d, cm_id=%p\n",
4067 cm_node, cm_node->loc_port,
4068 cm_node->rem_port, cm_node->cm_id);
4071 irdma_send_cm_event(cm_node, cm_id, IW_CM_EVENT_CONNECT_REPLY, 0);
4072 cm_node->accelerated = true;
4073 complete(&cm_node->establish_comp);
4074 cm_node->cm_core->cm_free_ah(cm_node);
4079 cm_id->provider_data = NULL;
4080 irdma_send_cm_event(event->cm_node, cm_id, IW_CM_EVENT_CONNECT_REPLY,
4082 irdma_rem_ref_cm_node(event->cm_node);
4086 * irdma_cm_event_reset - handle reset
4087 * @event: the info for cm_node of connection
4090 irdma_cm_event_reset(struct irdma_cm_event *event)
4092 struct irdma_cm_node *cm_node = event->cm_node;
4093 struct iw_cm_id *cm_id = cm_node->cm_id;
4094 struct irdma_qp *iwqp;
4099 iwqp = cm_id->provider_data;
4103 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
4104 "reset event %p - cm_id = %p\n", event->cm_node, cm_id);
4107 irdma_send_cm_event(cm_node, cm_node->cm_id, IW_CM_EVENT_DISCONNECT,
4109 irdma_send_cm_event(cm_node, cm_node->cm_id, IW_CM_EVENT_CLOSE, 0);
4113 * irdma_cm_event_handler - send event to cm upper layer
4114 * @work: pointer of cm event info.
4117 irdma_cm_event_handler(struct work_struct *work)
4119 struct irdma_cm_event *event = container_of(work, struct irdma_cm_event, event_work);
4120 struct irdma_cm_node *cm_node;
4122 if (!event || !event->cm_node || !event->cm_node->cm_core)
4125 cm_node = event->cm_node;
4127 switch (event->type) {
4128 case IRDMA_CM_EVENT_MPA_REQ:
4129 irdma_send_cm_event(cm_node, cm_node->cm_id,
4130 IW_CM_EVENT_CONNECT_REQUEST, 0);
4132 case IRDMA_CM_EVENT_RESET:
4133 irdma_cm_event_reset(event);
4135 case IRDMA_CM_EVENT_CONNECTED:
4136 if (!event->cm_node->cm_id ||
4137 event->cm_node->state != IRDMA_CM_STATE_OFFLOADED)
4139 irdma_cm_event_connected(event);
4141 case IRDMA_CM_EVENT_MPA_REJECT:
4142 if (!event->cm_node->cm_id ||
4143 cm_node->state == IRDMA_CM_STATE_OFFLOADED)
4145 irdma_send_cm_event(cm_node, cm_node->cm_id,
4146 IW_CM_EVENT_CONNECT_REPLY, -ECONNREFUSED);
4148 case IRDMA_CM_EVENT_ABORTED:
4149 if (!event->cm_node->cm_id ||
4150 event->cm_node->state == IRDMA_CM_STATE_OFFLOADED)
4152 irdma_event_connect_error(event);
4155 irdma_debug(iwdev_to_idev(cm_node->iwdev), IRDMA_DEBUG_CM,
4156 "bad event type = %d\n", event->type);
4160 irdma_rem_ref_cm_node(event->cm_node);
4165 * irdma_cm_post_event - queue event request for worker thread
4166 * @event: cm node's info for up event call
4169 irdma_cm_post_event(struct irdma_cm_event *event)
4171 atomic_inc(&event->cm_node->refcnt);
4172 INIT_WORK(&event->event_work, irdma_cm_event_handler);
4173 queue_work(event->cm_node->cm_core->event_wq, &event->event_work);
4177 * irdma_cm_teardown_connections - teardown QPs
4178 * @iwdev: device pointer
4179 * @ipaddr: Pointer to IPv4 or IPv6 address
4180 * @nfo: Connection info
4181 * @disconnect_all: flag indicating disconnect all QPs
4183 * teardown QPs where source or destination addr matches ip addr
4186 irdma_cm_teardown_connections(struct irdma_device *iwdev, u32 *ipaddr,
4187 struct irdma_cm_info *nfo,
4188 bool disconnect_all)
4190 struct irdma_cm_core *cm_core = &iwdev->cm_core;
4191 struct list_head *list_core_temp;
4192 struct list_head *list_node;
4193 struct irdma_cm_node *cm_node;
4194 struct list_head teardown_list;
4195 struct ib_qp_attr attr;
4196 struct irdma_sc_vsi *vsi = &iwdev->vsi;
4197 struct irdma_sc_qp *sc_qp;
4198 struct irdma_qp *qp;
4201 INIT_LIST_HEAD(&teardown_list);
4204 irdma_teardown_list_prep(cm_core, &teardown_list, ipaddr, nfo, disconnect_all);
4207 list_for_each_safe(list_node, list_core_temp, &teardown_list) {
4208 cm_node = container_of(list_node, struct irdma_cm_node,
4210 attr.qp_state = IB_QPS_ERR;
4211 irdma_modify_qp(&cm_node->iwqp->ibqp, &attr, IB_QP_STATE, NULL);
4212 if (iwdev->rf->reset)
4213 irdma_cm_disconn(cm_node->iwqp);
4214 irdma_rem_ref_cm_node(cm_node);
4216 if (!iwdev->roce_mode)
4219 INIT_LIST_HEAD(&teardown_list);
4220 for (i = 0; i < IRDMA_MAX_USER_PRIORITY; i++) {
4221 mutex_lock(&vsi->qos[i].qos_mutex);
4222 list_for_each_safe(list_node, list_core_temp,
4223 &vsi->qos[i].qplist) {
4226 sc_qp = container_of(list_node, struct irdma_sc_qp,
4228 if (sc_qp->qp_uk.qp_type != IRDMA_QP_TYPE_ROCE_RC)
4231 qp = sc_qp->qp_uk.back_qp;
4232 if (!disconnect_all) {
4234 qp_ip[0] = qp->udp_info.local_ipaddr[3];
4237 &qp->udp_info.local_ipaddr[0],
4241 if (disconnect_all ||
4242 (nfo->vlan_id == (qp->udp_info.vlan_tag & EVL_VLID_MASK) &&
4243 !memcmp(qp_ip, ipaddr, nfo->ipv4 ? 4 : 16))) {
4244 spin_lock(&iwdev->rf->qptable_lock);
4245 if (iwdev->rf->qp_table[sc_qp->qp_uk.qp_id]) {
4246 irdma_qp_add_ref(&qp->ibqp);
4247 list_add(&qp->teardown_entry,
4250 spin_unlock(&iwdev->rf->qptable_lock);
4253 mutex_unlock(&vsi->qos[i].qos_mutex);
4256 list_for_each_safe(list_node, list_core_temp, &teardown_list) {
4257 qp = container_of(list_node, struct irdma_qp, teardown_entry);
4258 attr.qp_state = IB_QPS_ERR;
4259 irdma_modify_qp_roce(&qp->ibqp, &attr, IB_QP_STATE, NULL);
4260 irdma_qp_rem_ref(&qp->ibqp);