1 // SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
2 /* Copyright (c) 2015 - 2021 Intel Corporation */
6 static void irdma_cm_post_event(struct irdma_cm_event *event);
7 static void irdma_disconnect_worker(struct work_struct *work);
10 * irdma_free_sqbuf - put back puda buffer if refcount is 0
11 * @vsi: The VSI structure of the device
12 * @bufp: puda buffer to free
14 void irdma_free_sqbuf(struct irdma_sc_vsi *vsi, void *bufp)
16 struct irdma_puda_buf *buf = bufp;
17 struct irdma_puda_rsrc *ilq = vsi->ilq;
19 if (refcount_dec_and_test(&buf->refcount))
20 irdma_puda_ret_bufpool(ilq, buf);
24 * irdma_record_ird_ord - Record IRD/ORD passed in
25 * @cm_node: connection's node
26 * @conn_ird: connection IRD
27 * @conn_ord: connection ORD
29 static void irdma_record_ird_ord(struct irdma_cm_node *cm_node, u32 conn_ird,
32 if (conn_ird > cm_node->dev->hw_attrs.max_hw_ird)
33 conn_ird = cm_node->dev->hw_attrs.max_hw_ird;
35 if (conn_ord > cm_node->dev->hw_attrs.max_hw_ord)
36 conn_ord = cm_node->dev->hw_attrs.max_hw_ord;
37 else if (!conn_ord && cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO)
39 cm_node->ird_size = conn_ird;
40 cm_node->ord_size = conn_ord;
44 * irdma_copy_ip_ntohl - copy IP address from network to host
45 * @dst: IP address in host order
46 * @src: IP address in network order (big endian)
48 void irdma_copy_ip_ntohl(u32 *dst, __be32 *src)
50 *dst++ = ntohl(*src++);
51 *dst++ = ntohl(*src++);
52 *dst++ = ntohl(*src++);
57 * irdma_copy_ip_htonl - copy IP address from host to network order
58 * @dst: IP address in network order (big endian)
59 * @src: IP address in host order
61 void irdma_copy_ip_htonl(__be32 *dst, u32 *src)
63 *dst++ = htonl(*src++);
64 *dst++ = htonl(*src++);
65 *dst++ = htonl(*src++);
71 * @cm_node: contains ip/tcp info
72 * @cm_info: to get a copy of the cm_node ip/tcp info
74 static void irdma_get_addr_info(struct irdma_cm_node *cm_node,
75 struct irdma_cm_info *cm_info)
77 memset(cm_info, 0, sizeof(*cm_info));
78 cm_info->ipv4 = cm_node->ipv4;
79 cm_info->vlan_id = cm_node->vlan_id;
80 memcpy(cm_info->loc_addr, cm_node->loc_addr, sizeof(cm_info->loc_addr));
81 memcpy(cm_info->rem_addr, cm_node->rem_addr, sizeof(cm_info->rem_addr));
82 cm_info->loc_port = cm_node->loc_port;
83 cm_info->rem_port = cm_node->rem_port;
87 * irdma_fill_sockaddr4 - fill in addr info for IPv4 connection
88 * @cm_node: connection's node
89 * @event: upper layer's cm event
91 static inline void irdma_fill_sockaddr4(struct irdma_cm_node *cm_node,
92 struct iw_cm_event *event)
94 struct sockaddr_in *laddr = (struct sockaddr_in *)&event->local_addr;
95 struct sockaddr_in *raddr = (struct sockaddr_in *)&event->remote_addr;
97 laddr->sin_family = AF_INET;
98 raddr->sin_family = AF_INET;
100 laddr->sin_port = htons(cm_node->loc_port);
101 raddr->sin_port = htons(cm_node->rem_port);
103 laddr->sin_addr.s_addr = htonl(cm_node->loc_addr[0]);
104 raddr->sin_addr.s_addr = htonl(cm_node->rem_addr[0]);
108 * irdma_fill_sockaddr6 - fill in addr info for IPv6 connection
109 * @cm_node: connection's node
110 * @event: upper layer's cm event
112 static inline void irdma_fill_sockaddr6(struct irdma_cm_node *cm_node,
113 struct iw_cm_event *event)
115 struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)&event->local_addr;
116 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)&event->remote_addr;
118 laddr6->sin6_family = AF_INET6;
119 raddr6->sin6_family = AF_INET6;
121 laddr6->sin6_port = htons(cm_node->loc_port);
122 raddr6->sin6_port = htons(cm_node->rem_port);
124 irdma_copy_ip_htonl(laddr6->sin6_addr.in6_u.u6_addr32,
126 irdma_copy_ip_htonl(raddr6->sin6_addr.in6_u.u6_addr32,
131 * irdma_get_cmevent_info - for cm event upcall
132 * @cm_node: connection's node
133 * @cm_id: upper layers cm struct for the event
134 * @event: upper layer's cm event
136 static inline void irdma_get_cmevent_info(struct irdma_cm_node *cm_node,
137 struct iw_cm_id *cm_id,
138 struct iw_cm_event *event)
140 memcpy(&event->local_addr, &cm_id->m_local_addr,
141 sizeof(event->local_addr));
142 memcpy(&event->remote_addr, &cm_id->m_remote_addr,
143 sizeof(event->remote_addr));
145 event->private_data = cm_node->pdata_buf;
146 event->private_data_len = (u8)cm_node->pdata.size;
147 event->ird = cm_node->ird_size;
148 event->ord = cm_node->ord_size;
153 * irdma_send_cm_event - upcall cm's event handler
154 * @cm_node: connection's node
155 * @cm_id: upper layer's cm info struct
156 * @type: Event type to indicate
157 * @status: status for the event type
159 static int irdma_send_cm_event(struct irdma_cm_node *cm_node,
160 struct iw_cm_id *cm_id,
161 enum iw_cm_event_type type, int status)
163 struct iw_cm_event event = {};
166 event.status = status;
167 trace_irdma_send_cm_event(cm_node, cm_id, type, status,
168 __builtin_return_address(0));
170 ibdev_dbg(&cm_node->iwdev->ibdev,
171 "CM: cm_node %p cm_id=%p state=%d accel=%d event_type=%d status=%d\n",
172 cm_node, cm_id, cm_node->accelerated, cm_node->state, type,
176 case IW_CM_EVENT_CONNECT_REQUEST:
178 irdma_fill_sockaddr4(cm_node, &event);
180 irdma_fill_sockaddr6(cm_node, &event);
181 event.provider_data = cm_node;
182 event.private_data = cm_node->pdata_buf;
183 event.private_data_len = (u8)cm_node->pdata.size;
184 event.ird = cm_node->ird_size;
186 case IW_CM_EVENT_CONNECT_REPLY:
187 irdma_get_cmevent_info(cm_node, cm_id, &event);
189 case IW_CM_EVENT_ESTABLISHED:
190 event.ird = cm_node->ird_size;
191 event.ord = cm_node->ord_size;
193 case IW_CM_EVENT_DISCONNECT:
194 case IW_CM_EVENT_CLOSE:
195 /* Wait if we are in RTS but havent issued the iwcm event upcall */
196 if (!cm_node->accelerated)
197 wait_for_completion(&cm_node->establish_comp);
203 return cm_id->event_handler(cm_id, &event);
207 * irdma_timer_list_prep - add connection nodes to a list to perform timer tasks
208 * @cm_core: cm's core
209 * @timer_list: a timer list to which cm_node will be selected
211 static void irdma_timer_list_prep(struct irdma_cm_core *cm_core,
212 struct list_head *timer_list)
214 struct irdma_cm_node *cm_node;
217 hash_for_each_rcu(cm_core->cm_hash_tbl, bkt, cm_node, list) {
218 if ((cm_node->close_entry || cm_node->send_entry) &&
219 refcount_inc_not_zero(&cm_node->refcnt))
220 list_add(&cm_node->timer_entry, timer_list);
225 * irdma_create_event - create cm event
226 * @cm_node: connection's node
227 * @type: Event type to generate
229 static struct irdma_cm_event *irdma_create_event(struct irdma_cm_node *cm_node,
230 enum irdma_cm_event_type type)
232 struct irdma_cm_event *event;
237 event = kzalloc(sizeof(*event), GFP_ATOMIC);
243 event->cm_node = cm_node;
244 memcpy(event->cm_info.rem_addr, cm_node->rem_addr,
245 sizeof(event->cm_info.rem_addr));
246 memcpy(event->cm_info.loc_addr, cm_node->loc_addr,
247 sizeof(event->cm_info.loc_addr));
248 event->cm_info.rem_port = cm_node->rem_port;
249 event->cm_info.loc_port = cm_node->loc_port;
250 event->cm_info.cm_id = cm_node->cm_id;
251 ibdev_dbg(&cm_node->iwdev->ibdev,
252 "CM: node=%p event=%p type=%u dst=%pI4 src=%pI4\n", cm_node,
253 event, type, event->cm_info.loc_addr,
254 event->cm_info.rem_addr);
255 trace_irdma_create_event(cm_node, type, __builtin_return_address(0));
256 irdma_cm_post_event(event);
262 * irdma_free_retrans_entry - free send entry
263 * @cm_node: connection's node
265 static void irdma_free_retrans_entry(struct irdma_cm_node *cm_node)
267 struct irdma_device *iwdev = cm_node->iwdev;
268 struct irdma_timer_entry *send_entry;
270 send_entry = cm_node->send_entry;
274 cm_node->send_entry = NULL;
275 irdma_free_sqbuf(&iwdev->vsi, send_entry->sqbuf);
277 refcount_dec(&cm_node->refcnt);
281 * irdma_cleanup_retrans_entry - free send entry with lock
282 * @cm_node: connection's node
284 static void irdma_cleanup_retrans_entry(struct irdma_cm_node *cm_node)
288 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
289 irdma_free_retrans_entry(cm_node);
290 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
294 * irdma_form_ah_cm_frame - get a free packet and build frame with address handle
295 * @cm_node: connection's node ionfo to use in frame
296 * @options: pointer to options info
297 * @hdr: pointer mpa header
298 * @pdata: pointer to private data
299 * @flags: indicates FIN or ACK
301 static struct irdma_puda_buf *irdma_form_ah_cm_frame(struct irdma_cm_node *cm_node,
302 struct irdma_kmem_info *options,
303 struct irdma_kmem_info *hdr,
304 struct irdma_mpa_priv_info *pdata,
307 struct irdma_puda_buf *sqbuf;
308 struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi;
316 if (!cm_node->ah || !cm_node->ah->ah_info.ah_valid) {
317 ibdev_dbg(&cm_node->iwdev->ibdev, "CM: AH invalid\n");
321 sqbuf = irdma_puda_get_bufpool(vsi->ilq);
323 ibdev_dbg(&cm_node->iwdev->ibdev, "CM: SQ buf NULL\n");
327 sqbuf->ah_id = cm_node->ah->ah_info.ah_idx;
330 opts_len = (u32)options->size;
336 pd_len = pdata->size;
338 pktsize = sizeof(*tcph) + opts_len + hdr_len + pd_len;
340 memset(buf, 0, pktsize);
342 sqbuf->totallen = pktsize;
343 sqbuf->tcphlen = sizeof(*tcph) + opts_len;
344 sqbuf->scratch = cm_node;
346 tcph = (struct tcphdr *)buf;
347 buf += sizeof(*tcph);
349 tcph->source = htons(cm_node->loc_port);
350 tcph->dest = htons(cm_node->rem_port);
351 tcph->seq = htonl(cm_node->tcp_cntxt.loc_seq_num);
353 if (flags & SET_ACK) {
354 cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt;
355 tcph->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num);
361 if (flags & SET_SYN) {
362 cm_node->tcp_cntxt.loc_seq_num++;
365 cm_node->tcp_cntxt.loc_seq_num += hdr_len + pd_len;
368 if (flags & SET_FIN) {
369 cm_node->tcp_cntxt.loc_seq_num++;
376 tcph->doff = (u16)((sizeof(*tcph) + opts_len + 3) >> 2);
377 sqbuf->tcphlen = tcph->doff << 2;
378 tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd);
382 memcpy(buf, options->addr, opts_len);
387 memcpy(buf, hdr->addr, hdr_len);
391 if (pdata && pdata->addr)
392 memcpy(buf, pdata->addr, pdata->size);
394 refcount_set(&sqbuf->refcount, 1);
396 print_hex_dump_debug("ILQ: TRANSMIT ILQ BUFFER", DUMP_PREFIX_OFFSET,
397 16, 8, sqbuf->mem.va, sqbuf->totallen, false);
403 * irdma_form_uda_cm_frame - get a free packet and build frame full tcpip packet
404 * @cm_node: connection's node ionfo to use in frame
405 * @options: pointer to options info
406 * @hdr: pointer mpa header
407 * @pdata: pointer to private data
408 * @flags: indicates FIN or ACK
410 static struct irdma_puda_buf *irdma_form_uda_cm_frame(struct irdma_cm_node *cm_node,
411 struct irdma_kmem_info *options,
412 struct irdma_kmem_info *hdr,
413 struct irdma_mpa_priv_info *pdata,
416 struct irdma_puda_buf *sqbuf;
417 struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi;
422 struct ipv6hdr *ip6h;
425 u16 eth_hlen = ETH_HLEN;
432 sqbuf = irdma_puda_get_bufpool(vsi->ilq);
439 opts_len = (u32)options->size;
445 pd_len = pdata->size;
447 if (cm_node->vlan_id < VLAN_N_VID)
451 pktsize = sizeof(*iph) + sizeof(*tcph);
453 pktsize = sizeof(*ip6h) + sizeof(*tcph);
454 pktsize += opts_len + hdr_len + pd_len;
456 memset(buf, 0, eth_hlen + pktsize);
458 sqbuf->totallen = pktsize + eth_hlen;
459 sqbuf->maclen = eth_hlen;
460 sqbuf->tcphlen = sizeof(*tcph) + opts_len;
461 sqbuf->scratch = cm_node;
463 ethh = (struct ethhdr *)buf;
467 sqbuf->do_lpb = true;
472 iph = (struct iphdr *)buf;
474 tcph = (struct tcphdr *)buf;
475 buf += sizeof(*tcph);
477 ether_addr_copy(ethh->h_dest, cm_node->rem_mac);
478 ether_addr_copy(ethh->h_source, cm_node->loc_mac);
479 if (cm_node->vlan_id < VLAN_N_VID) {
480 ((struct vlan_ethhdr *)ethh)->h_vlan_proto =
482 vtag = (cm_node->user_pri << VLAN_PRIO_SHIFT) |
484 ((struct vlan_ethhdr *)ethh)->h_vlan_TCI = htons(vtag);
486 ((struct vlan_ethhdr *)ethh)->h_vlan_encapsulated_proto =
489 ethh->h_proto = htons(ETH_P_IP);
492 iph->version = IPVERSION;
493 iph->ihl = 5; /* 5 * 4Byte words, IP headr len */
494 iph->tos = cm_node->tos;
495 iph->tot_len = htons(pktsize);
496 iph->id = htons(++cm_node->tcp_cntxt.loc_id);
498 iph->frag_off = htons(0x4000);
500 iph->protocol = IPPROTO_TCP;
501 iph->saddr = htonl(cm_node->loc_addr[0]);
502 iph->daddr = htonl(cm_node->rem_addr[0]);
505 ip6h = (struct ipv6hdr *)buf;
506 buf += sizeof(*ip6h);
507 tcph = (struct tcphdr *)buf;
508 buf += sizeof(*tcph);
510 ether_addr_copy(ethh->h_dest, cm_node->rem_mac);
511 ether_addr_copy(ethh->h_source, cm_node->loc_mac);
512 if (cm_node->vlan_id < VLAN_N_VID) {
513 ((struct vlan_ethhdr *)ethh)->h_vlan_proto =
515 vtag = (cm_node->user_pri << VLAN_PRIO_SHIFT) |
517 ((struct vlan_ethhdr *)ethh)->h_vlan_TCI = htons(vtag);
518 ((struct vlan_ethhdr *)ethh)->h_vlan_encapsulated_proto =
521 ethh->h_proto = htons(ETH_P_IPV6);
524 ip6h->priority = cm_node->tos >> 4;
525 ip6h->flow_lbl[0] = cm_node->tos << 4;
526 ip6h->flow_lbl[1] = 0;
527 ip6h->flow_lbl[2] = 0;
528 ip6h->payload_len = htons(pktsize - sizeof(*ip6h));
530 ip6h->hop_limit = 128;
531 irdma_copy_ip_htonl(ip6h->saddr.in6_u.u6_addr32,
533 irdma_copy_ip_htonl(ip6h->daddr.in6_u.u6_addr32,
537 tcph->source = htons(cm_node->loc_port);
538 tcph->dest = htons(cm_node->rem_port);
539 tcph->seq = htonl(cm_node->tcp_cntxt.loc_seq_num);
541 if (flags & SET_ACK) {
542 cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt;
543 tcph->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num);
549 if (flags & SET_SYN) {
550 cm_node->tcp_cntxt.loc_seq_num++;
553 cm_node->tcp_cntxt.loc_seq_num += hdr_len + pd_len;
556 if (flags & SET_FIN) {
557 cm_node->tcp_cntxt.loc_seq_num++;
564 tcph->doff = (u16)((sizeof(*tcph) + opts_len + 3) >> 2);
565 sqbuf->tcphlen = tcph->doff << 2;
566 tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd);
570 memcpy(buf, options->addr, opts_len);
575 memcpy(buf, hdr->addr, hdr_len);
579 if (pdata && pdata->addr)
580 memcpy(buf, pdata->addr, pdata->size);
582 refcount_set(&sqbuf->refcount, 1);
584 print_hex_dump_debug("ILQ: TRANSMIT ILQ BUFFER", DUMP_PREFIX_OFFSET,
585 16, 8, sqbuf->mem.va, sqbuf->totallen, false);
590 * irdma_send_reset - Send RST packet
591 * @cm_node: connection's node
593 int irdma_send_reset(struct irdma_cm_node *cm_node)
595 struct irdma_puda_buf *sqbuf;
596 int flags = SET_RST | SET_ACK;
598 trace_irdma_send_reset(cm_node, 0, __builtin_return_address(0));
599 sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, NULL, NULL,
604 ibdev_dbg(&cm_node->iwdev->ibdev,
605 "CM: 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",
606 __builtin_return_address(0), cm_node, cm_node->cm_id,
607 cm_node->accelerated, cm_node->state, cm_node->rem_port,
608 cm_node->loc_port, cm_node->rem_addr, cm_node->loc_addr);
610 return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 0,
615 * irdma_active_open_err - send event for active side cm error
616 * @cm_node: connection's node
617 * @reset: Flag to send reset or not
619 static void irdma_active_open_err(struct irdma_cm_node *cm_node, bool reset)
621 trace_irdma_active_open_err(cm_node, reset,
622 __builtin_return_address(0));
623 irdma_cleanup_retrans_entry(cm_node);
624 cm_node->cm_core->stats_connect_errs++;
626 ibdev_dbg(&cm_node->iwdev->ibdev,
627 "CM: cm_node=%p state=%d\n", cm_node,
629 refcount_inc(&cm_node->refcnt);
630 irdma_send_reset(cm_node);
633 cm_node->state = IRDMA_CM_STATE_CLOSED;
634 irdma_create_event(cm_node, IRDMA_CM_EVENT_ABORTED);
638 * irdma_passive_open_err - handle passive side cm error
639 * @cm_node: connection's node
640 * @reset: send reset or just free cm_node
642 static void irdma_passive_open_err(struct irdma_cm_node *cm_node, bool reset)
644 irdma_cleanup_retrans_entry(cm_node);
645 cm_node->cm_core->stats_passive_errs++;
646 cm_node->state = IRDMA_CM_STATE_CLOSED;
647 ibdev_dbg(&cm_node->iwdev->ibdev, "CM: cm_node=%p state =%d\n",
648 cm_node, cm_node->state);
649 trace_irdma_passive_open_err(cm_node, reset,
650 __builtin_return_address(0));
652 irdma_send_reset(cm_node);
654 irdma_rem_ref_cm_node(cm_node);
658 * irdma_event_connect_error - to create connect error event
659 * @event: cm information for connect event
661 static void irdma_event_connect_error(struct irdma_cm_event *event)
663 struct irdma_qp *iwqp;
664 struct iw_cm_id *cm_id;
666 cm_id = event->cm_node->cm_id;
670 iwqp = cm_id->provider_data;
672 if (!iwqp || !iwqp->iwdev)
676 cm_id->provider_data = NULL;
677 irdma_send_cm_event(event->cm_node, cm_id, IW_CM_EVENT_CONNECT_REPLY,
679 irdma_rem_ref_cm_node(event->cm_node);
683 * irdma_process_options - process options from TCP header
684 * @cm_node: connection's node
685 * @optionsloc: point to start of options
686 * @optionsize: size of all options
687 * @syn_pkt: flag if syn packet
689 static int irdma_process_options(struct irdma_cm_node *cm_node, u8 *optionsloc,
690 u32 optionsize, u32 syn_pkt)
694 union all_known_options *all_options;
695 char got_mss_option = 0;
697 while (offset < optionsize) {
698 all_options = (union all_known_options *)(optionsloc + offset);
699 switch (all_options->base.optionnum) {
703 case OPTION_NUM_NONE:
707 ibdev_dbg(&cm_node->iwdev->ibdev,
708 "CM: MSS Length: %d Offset: %d Size: %d\n",
709 all_options->mss.len, offset, optionsize);
711 if (all_options->mss.len != 4)
713 tmp = ntohs(all_options->mss.mss);
714 if ((cm_node->ipv4 &&
715 (tmp + IRDMA_MTU_TO_MSS_IPV4) < IRDMA_MIN_MTU_IPV4) ||
717 (tmp + IRDMA_MTU_TO_MSS_IPV6) < IRDMA_MIN_MTU_IPV6))
719 if (tmp < cm_node->tcp_cntxt.mss)
720 cm_node->tcp_cntxt.mss = tmp;
722 case OPTION_NUM_WINDOW_SCALE:
723 cm_node->tcp_cntxt.snd_wscale =
724 all_options->windowscale.shiftcount;
727 ibdev_dbg(&cm_node->iwdev->ibdev,
728 "CM: Unsupported TCP Option: %x\n",
729 all_options->base.optionnum);
732 offset += all_options->base.len;
734 if (!got_mss_option && syn_pkt)
735 cm_node->tcp_cntxt.mss = IRDMA_CM_DEFAULT_MSS;
741 * irdma_handle_tcp_options - setup TCP context info after parsing TCP options
742 * @cm_node: connection's node
743 * @tcph: pointer tcp header
744 * @optionsize: size of options rcvd
745 * @passive: active or passive flag
747 static int irdma_handle_tcp_options(struct irdma_cm_node *cm_node,
748 struct tcphdr *tcph, int optionsize,
751 u8 *optionsloc = (u8 *)&tcph[1];
755 ret = irdma_process_options(cm_node, optionsloc, optionsize,
758 ibdev_dbg(&cm_node->iwdev->ibdev,
759 "CM: Node %p, Sending Reset\n", cm_node);
761 irdma_passive_open_err(cm_node, true);
763 irdma_active_open_err(cm_node, true);
768 cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->window)
769 << cm_node->tcp_cntxt.snd_wscale;
771 if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd)
772 cm_node->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.snd_wnd;
778 * irdma_build_mpa_v1 - build a MPA V1 frame
779 * @cm_node: connection's node
780 * @start_addr: address where to build frame
781 * @mpa_key: to do read0 or write0
783 static void irdma_build_mpa_v1(struct irdma_cm_node *cm_node, void *start_addr,
786 struct ietf_mpa_v1 *mpa_frame = start_addr;
789 case MPA_KEY_REQUEST:
790 memcpy(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE);
793 memcpy(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE);
798 mpa_frame->flags = IETF_MPA_FLAGS_CRC;
799 mpa_frame->rev = cm_node->mpa_frame_rev;
800 mpa_frame->priv_data_len = htons(cm_node->pdata.size);
804 * irdma_build_mpa_v2 - build a MPA V2 frame
805 * @cm_node: connection's node
806 * @start_addr: buffer start address
807 * @mpa_key: to do read0 or write0
809 static void irdma_build_mpa_v2(struct irdma_cm_node *cm_node, void *start_addr,
812 struct ietf_mpa_v2 *mpa_frame = start_addr;
813 struct ietf_rtr_msg *rtr_msg = &mpa_frame->rtr_msg;
814 u16 ctrl_ird, ctrl_ord;
816 /* initialize the upper 5 bytes of the frame */
817 irdma_build_mpa_v1(cm_node, start_addr, mpa_key);
818 mpa_frame->flags |= IETF_MPA_V2_FLAG;
819 if (cm_node->iwdev->iw_ooo) {
820 mpa_frame->flags |= IETF_MPA_FLAGS_MARKERS;
821 cm_node->rcv_mark_en = true;
823 mpa_frame->priv_data_len = cpu_to_be16(be16_to_cpu(mpa_frame->priv_data_len) +
826 /* initialize RTR msg */
827 if (cm_node->mpav2_ird_ord == IETF_NO_IRD_ORD) {
828 ctrl_ird = IETF_NO_IRD_ORD;
829 ctrl_ord = IETF_NO_IRD_ORD;
831 ctrl_ird = (cm_node->ird_size > IETF_NO_IRD_ORD) ?
834 ctrl_ord = (cm_node->ord_size > IETF_NO_IRD_ORD) ?
838 ctrl_ird |= IETF_PEER_TO_PEER;
841 case MPA_KEY_REQUEST:
842 ctrl_ord |= IETF_RDMA0_WRITE;
843 ctrl_ord |= IETF_RDMA0_READ;
846 switch (cm_node->send_rdma0_op) {
847 case SEND_RDMA_WRITE_ZERO:
848 ctrl_ord |= IETF_RDMA0_WRITE;
850 case SEND_RDMA_READ_ZERO:
851 ctrl_ord |= IETF_RDMA0_READ;
858 rtr_msg->ctrl_ird = htons(ctrl_ird);
859 rtr_msg->ctrl_ord = htons(ctrl_ord);
863 * irdma_cm_build_mpa_frame - build mpa frame for mpa version 1 or version 2
864 * @cm_node: connection's node
865 * @mpa: mpa: data buffer
866 * @mpa_key: to do read0 or write0
868 static int irdma_cm_build_mpa_frame(struct irdma_cm_node *cm_node,
869 struct irdma_kmem_info *mpa, u8 mpa_key)
873 switch (cm_node->mpa_frame_rev) {
875 hdr_len = sizeof(struct ietf_mpa_v1);
876 irdma_build_mpa_v1(cm_node, mpa->addr, mpa_key);
879 hdr_len = sizeof(struct ietf_mpa_v2);
880 irdma_build_mpa_v2(cm_node, mpa->addr, mpa_key);
890 * irdma_send_mpa_request - active node send mpa request to passive node
891 * @cm_node: connection's node
893 static int irdma_send_mpa_request(struct irdma_cm_node *cm_node)
895 struct irdma_puda_buf *sqbuf;
897 cm_node->mpa_hdr.addr = &cm_node->mpa_v2_frame;
898 cm_node->mpa_hdr.size = irdma_cm_build_mpa_frame(cm_node,
901 if (!cm_node->mpa_hdr.size) {
902 ibdev_dbg(&cm_node->iwdev->ibdev,
903 "CM: mpa size = %d\n", cm_node->mpa_hdr.size);
907 sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL,
909 &cm_node->pdata, SET_ACK);
913 return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 1,
918 * irdma_send_mpa_reject -
919 * @cm_node: connection's node
920 * @pdata: reject data for connection
921 * @plen: length of reject data
923 static int irdma_send_mpa_reject(struct irdma_cm_node *cm_node,
924 const void *pdata, u8 plen)
926 struct irdma_puda_buf *sqbuf;
927 struct irdma_mpa_priv_info priv_info;
929 cm_node->mpa_hdr.addr = &cm_node->mpa_v2_frame;
930 cm_node->mpa_hdr.size = irdma_cm_build_mpa_frame(cm_node,
934 cm_node->mpa_frame.flags |= IETF_MPA_FLAGS_REJECT;
935 priv_info.addr = pdata;
936 priv_info.size = plen;
938 sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL,
939 &cm_node->mpa_hdr, &priv_info,
944 cm_node->state = IRDMA_CM_STATE_FIN_WAIT1;
946 return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 1,
951 * irdma_negotiate_mpa_v2_ird_ord - negotiate MPAv2 IRD/ORD
952 * @cm_node: connection's node
955 static int irdma_negotiate_mpa_v2_ird_ord(struct irdma_cm_node *cm_node,
958 struct ietf_mpa_v2 *mpa_v2_frame;
959 struct ietf_rtr_msg *rtr_msg;
965 mpa_v2_frame = (struct ietf_mpa_v2 *)buf;
966 rtr_msg = &mpa_v2_frame->rtr_msg;
968 /* parse rtr message */
969 ctrl_ord = ntohs(rtr_msg->ctrl_ord);
970 ctrl_ird = ntohs(rtr_msg->ctrl_ird);
971 ird_size = ctrl_ird & IETF_NO_IRD_ORD;
972 ord_size = ctrl_ord & IETF_NO_IRD_ORD;
974 if (!(ctrl_ird & IETF_PEER_TO_PEER))
977 if (ird_size == IETF_NO_IRD_ORD || ord_size == IETF_NO_IRD_ORD) {
978 cm_node->mpav2_ird_ord = IETF_NO_IRD_ORD;
982 if (cm_node->state != IRDMA_CM_STATE_MPAREQ_SENT) {
984 if (!ord_size && (ctrl_ord & IETF_RDMA0_READ))
985 cm_node->ird_size = 1;
986 if (cm_node->ord_size > ird_size)
987 cm_node->ord_size = ird_size;
990 if (!ird_size && (ctrl_ord & IETF_RDMA0_READ))
991 /* Remote peer doesn't support RDMA0_READ */
994 if (cm_node->ord_size > ird_size)
995 cm_node->ord_size = ird_size;
997 if (cm_node->ird_size < ord_size)
998 /* no resources available */
1003 if (ctrl_ord & IETF_RDMA0_READ)
1004 cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO;
1005 else if (ctrl_ord & IETF_RDMA0_WRITE)
1006 cm_node->send_rdma0_op = SEND_RDMA_WRITE_ZERO;
1008 /* Not supported RDMA0 operation */
1011 ibdev_dbg(&cm_node->iwdev->ibdev,
1012 "CM: MPAV2 Negotiated ORD: %d, IRD: %d\n",
1013 cm_node->ord_size, cm_node->ird_size);
1014 trace_irdma_negotiate_mpa_v2(cm_node);
1019 * irdma_parse_mpa - process an IETF MPA frame
1020 * @cm_node: connection's node
1021 * @buf: Data pointer
1022 * @type: to return accept or reject
1023 * @len: Len of mpa buffer
1025 static int irdma_parse_mpa(struct irdma_cm_node *cm_node, u8 *buf, u32 *type,
1028 struct ietf_mpa_v1 *mpa_frame;
1029 int mpa_hdr_len, priv_data_len, ret;
1031 *type = IRDMA_MPA_REQUEST_ACCEPT;
1033 if (len < sizeof(struct ietf_mpa_v1)) {
1034 ibdev_dbg(&cm_node->iwdev->ibdev,
1035 "CM: ietf buffer small (%x)\n", len);
1039 mpa_frame = (struct ietf_mpa_v1 *)buf;
1040 mpa_hdr_len = sizeof(struct ietf_mpa_v1);
1041 priv_data_len = ntohs(mpa_frame->priv_data_len);
1043 if (priv_data_len > IETF_MAX_PRIV_DATA_LEN) {
1044 ibdev_dbg(&cm_node->iwdev->ibdev,
1045 "CM: private_data too big %d\n", priv_data_len);
1049 if (mpa_frame->rev != IETF_MPA_V1 && mpa_frame->rev != IETF_MPA_V2) {
1050 ibdev_dbg(&cm_node->iwdev->ibdev,
1051 "CM: unsupported mpa rev = %d\n", mpa_frame->rev);
1055 if (mpa_frame->rev > cm_node->mpa_frame_rev) {
1056 ibdev_dbg(&cm_node->iwdev->ibdev, "CM: rev %d\n",
1061 cm_node->mpa_frame_rev = mpa_frame->rev;
1062 if (cm_node->state != IRDMA_CM_STATE_MPAREQ_SENT) {
1063 if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REQ,
1064 IETF_MPA_KEY_SIZE)) {
1065 ibdev_dbg(&cm_node->iwdev->ibdev,
1066 "CM: Unexpected MPA Key received\n");
1070 if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REP,
1071 IETF_MPA_KEY_SIZE)) {
1072 ibdev_dbg(&cm_node->iwdev->ibdev,
1073 "CM: Unexpected MPA Key received\n");
1078 if (priv_data_len + mpa_hdr_len > len) {
1079 ibdev_dbg(&cm_node->iwdev->ibdev,
1080 "CM: ietf buffer len(%x + %x != %x)\n",
1081 priv_data_len, mpa_hdr_len, len);
1085 if (len > IRDMA_MAX_CM_BUF) {
1086 ibdev_dbg(&cm_node->iwdev->ibdev,
1087 "CM: ietf buffer large len = %d\n", len);
1091 switch (mpa_frame->rev) {
1093 mpa_hdr_len += IETF_RTR_MSG_SIZE;
1094 ret = irdma_negotiate_mpa_v2_ird_ord(cm_node, buf);
1103 memcpy(cm_node->pdata_buf, buf + mpa_hdr_len, priv_data_len);
1104 cm_node->pdata.size = priv_data_len;
1106 if (mpa_frame->flags & IETF_MPA_FLAGS_REJECT)
1107 *type = IRDMA_MPA_REQUEST_REJECT;
1109 if (mpa_frame->flags & IETF_MPA_FLAGS_MARKERS)
1110 cm_node->snd_mark_en = true;
1116 * irdma_schedule_cm_timer
1117 * @cm_node: connection's node
1118 * @sqbuf: buffer to send
1119 * @type: if it is send or close
1120 * @send_retrans: if rexmits to be done
1121 * @close_when_complete: is cm_node to be removed
1123 * note - cm_node needs to be protected before calling this. Encase in:
1124 * irdma_rem_ref_cm_node(cm_core, cm_node);
1125 * irdma_schedule_cm_timer(...)
1126 * refcount_inc(&cm_node->refcnt);
1128 int irdma_schedule_cm_timer(struct irdma_cm_node *cm_node,
1129 struct irdma_puda_buf *sqbuf,
1130 enum irdma_timer_type type, int send_retrans,
1131 int close_when_complete)
1133 struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi;
1134 struct irdma_cm_core *cm_core = cm_node->cm_core;
1135 struct irdma_timer_entry *new_send;
1137 unsigned long flags;
1139 new_send = kzalloc(sizeof(*new_send), GFP_ATOMIC);
1141 if (type != IRDMA_TIMER_TYPE_CLOSE)
1142 irdma_free_sqbuf(vsi, sqbuf);
1146 new_send->retrycount = IRDMA_DEFAULT_RETRYS;
1147 new_send->retranscount = IRDMA_DEFAULT_RETRANS;
1148 new_send->sqbuf = sqbuf;
1149 new_send->timetosend = jiffies;
1150 new_send->type = type;
1151 new_send->send_retrans = send_retrans;
1152 new_send->close_when_complete = close_when_complete;
1154 if (type == IRDMA_TIMER_TYPE_CLOSE) {
1155 new_send->timetosend += (HZ / 10);
1156 if (cm_node->close_entry) {
1158 ibdev_dbg(&cm_node->iwdev->ibdev,
1159 "CM: already close entry\n");
1163 cm_node->close_entry = new_send;
1164 } else { /* type == IRDMA_TIMER_TYPE_SEND */
1165 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1166 cm_node->send_entry = new_send;
1167 refcount_inc(&cm_node->refcnt);
1168 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
1169 new_send->timetosend = jiffies + IRDMA_RETRY_TIMEOUT;
1171 refcount_inc(&sqbuf->refcount);
1172 irdma_puda_send_buf(vsi->ilq, sqbuf);
1173 if (!send_retrans) {
1174 irdma_cleanup_retrans_entry(cm_node);
1175 if (close_when_complete)
1176 irdma_rem_ref_cm_node(cm_node);
1181 spin_lock_irqsave(&cm_core->ht_lock, flags);
1182 was_timer_set = timer_pending(&cm_core->tcp_timer);
1184 if (!was_timer_set) {
1185 cm_core->tcp_timer.expires = new_send->timetosend;
1186 add_timer(&cm_core->tcp_timer);
1188 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
1194 * irdma_retrans_expired - Could not rexmit the packet
1195 * @cm_node: connection's node
1197 static void irdma_retrans_expired(struct irdma_cm_node *cm_node)
1199 enum irdma_cm_node_state state = cm_node->state;
1201 cm_node->state = IRDMA_CM_STATE_CLOSED;
1203 case IRDMA_CM_STATE_SYN_RCVD:
1204 case IRDMA_CM_STATE_CLOSING:
1205 irdma_rem_ref_cm_node(cm_node);
1207 case IRDMA_CM_STATE_FIN_WAIT1:
1208 case IRDMA_CM_STATE_LAST_ACK:
1209 irdma_send_reset(cm_node);
1212 refcount_inc(&cm_node->refcnt);
1213 irdma_send_reset(cm_node);
1214 irdma_create_event(cm_node, IRDMA_CM_EVENT_ABORTED);
1220 * irdma_handle_close_entry - for handling retry/timeouts
1221 * @cm_node: connection's node
1222 * @rem_node: flag for remove cm_node
1224 static void irdma_handle_close_entry(struct irdma_cm_node *cm_node,
1227 struct irdma_timer_entry *close_entry = cm_node->close_entry;
1228 struct irdma_qp *iwqp;
1229 unsigned long flags;
1233 iwqp = (struct irdma_qp *)close_entry->sqbuf;
1235 spin_lock_irqsave(&iwqp->lock, flags);
1237 iwqp->hw_tcp_state = IRDMA_TCP_STATE_CLOSED;
1238 iwqp->hw_iwarp_state = IRDMA_QP_STATE_ERROR;
1239 iwqp->last_aeq = IRDMA_AE_RESET_SENT;
1240 iwqp->ibqp_state = IB_QPS_ERR;
1241 spin_unlock_irqrestore(&iwqp->lock, flags);
1242 irdma_cm_disconn(iwqp);
1244 spin_unlock_irqrestore(&iwqp->lock, flags);
1246 } else if (rem_node) {
1247 /* TIME_WAIT state */
1248 irdma_rem_ref_cm_node(cm_node);
1252 cm_node->close_entry = NULL;
1256 * irdma_cm_timer_tick - system's timer expired callback
1257 * @t: Pointer to timer_list
1259 static void irdma_cm_timer_tick(struct timer_list *t)
1261 unsigned long nexttimeout = jiffies + IRDMA_LONG_TIME;
1262 struct irdma_cm_node *cm_node;
1263 struct irdma_timer_entry *send_entry, *close_entry;
1264 struct list_head *list_core_temp;
1265 struct list_head *list_node;
1266 struct irdma_cm_core *cm_core = from_timer(cm_core, t, tcp_timer);
1267 struct irdma_sc_vsi *vsi;
1269 unsigned long timetosend;
1270 unsigned long flags;
1271 struct list_head timer_list;
1273 INIT_LIST_HEAD(&timer_list);
1276 irdma_timer_list_prep(cm_core, &timer_list);
1279 list_for_each_safe (list_node, list_core_temp, &timer_list) {
1280 cm_node = container_of(list_node, struct irdma_cm_node,
1282 close_entry = cm_node->close_entry;
1285 if (time_after(close_entry->timetosend, jiffies)) {
1286 if (nexttimeout > close_entry->timetosend ||
1288 nexttimeout = close_entry->timetosend;
1292 irdma_handle_close_entry(cm_node, 1);
1296 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1298 send_entry = cm_node->send_entry;
1301 if (time_after(send_entry->timetosend, jiffies)) {
1302 if (cm_node->state != IRDMA_CM_STATE_OFFLOADED) {
1303 if (nexttimeout > send_entry->timetosend ||
1305 nexttimeout = send_entry->timetosend;
1309 irdma_free_retrans_entry(cm_node);
1314 if (cm_node->state == IRDMA_CM_STATE_OFFLOADED ||
1315 cm_node->state == IRDMA_CM_STATE_CLOSED) {
1316 irdma_free_retrans_entry(cm_node);
1320 if (!send_entry->retranscount || !send_entry->retrycount) {
1321 irdma_free_retrans_entry(cm_node);
1323 spin_unlock_irqrestore(&cm_node->retrans_list_lock,
1325 irdma_retrans_expired(cm_node);
1326 cm_node->state = IRDMA_CM_STATE_CLOSED;
1327 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1330 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
1332 vsi = &cm_node->iwdev->vsi;
1333 if (!cm_node->ack_rcvd) {
1334 refcount_inc(&send_entry->sqbuf->refcount);
1335 irdma_puda_send_buf(vsi->ilq, send_entry->sqbuf);
1336 cm_node->cm_core->stats_pkt_retrans++;
1339 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1340 if (send_entry->send_retrans) {
1341 send_entry->retranscount--;
1342 timetosend = (IRDMA_RETRY_TIMEOUT <<
1343 (IRDMA_DEFAULT_RETRANS -
1344 send_entry->retranscount));
1346 send_entry->timetosend = jiffies +
1347 min(timetosend, IRDMA_MAX_TIMEOUT);
1348 if (nexttimeout > send_entry->timetosend || !settimer) {
1349 nexttimeout = send_entry->timetosend;
1353 int close_when_complete;
1355 close_when_complete = send_entry->close_when_complete;
1356 irdma_free_retrans_entry(cm_node);
1357 if (close_when_complete)
1358 irdma_rem_ref_cm_node(cm_node);
1361 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
1362 irdma_rem_ref_cm_node(cm_node);
1366 spin_lock_irqsave(&cm_core->ht_lock, flags);
1367 if (!timer_pending(&cm_core->tcp_timer)) {
1368 cm_core->tcp_timer.expires = nexttimeout;
1369 add_timer(&cm_core->tcp_timer);
1371 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
1376 * irdma_send_syn - send SYN packet
1377 * @cm_node: connection's node
1378 * @sendack: flag to set ACK bit or not
1380 int irdma_send_syn(struct irdma_cm_node *cm_node, u32 sendack)
1382 struct irdma_puda_buf *sqbuf;
1383 int flags = SET_SYN;
1384 char optionsbuf[sizeof(struct option_mss) +
1385 sizeof(struct option_windowscale) +
1386 sizeof(struct option_base) + TCP_OPTIONS_PADDING];
1387 struct irdma_kmem_info opts;
1388 int optionssize = 0;
1389 /* Sending MSS option */
1390 union all_known_options *options;
1392 opts.addr = optionsbuf;
1396 options = (union all_known_options *)&optionsbuf[optionssize];
1397 options->mss.optionnum = OPTION_NUM_MSS;
1398 options->mss.len = sizeof(struct option_mss);
1399 options->mss.mss = htons(cm_node->tcp_cntxt.mss);
1400 optionssize += sizeof(struct option_mss);
1402 options = (union all_known_options *)&optionsbuf[optionssize];
1403 options->windowscale.optionnum = OPTION_NUM_WINDOW_SCALE;
1404 options->windowscale.len = sizeof(struct option_windowscale);
1405 options->windowscale.shiftcount = cm_node->tcp_cntxt.rcv_wscale;
1406 optionssize += sizeof(struct option_windowscale);
1407 options = (union all_known_options *)&optionsbuf[optionssize];
1408 options->eol = OPTION_NUM_EOL;
1414 opts.size = optionssize;
1416 sqbuf = cm_node->cm_core->form_cm_frame(cm_node, &opts, NULL, NULL,
1421 return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 1,
1426 * irdma_send_ack - Send ACK packet
1427 * @cm_node: connection's node
1429 void irdma_send_ack(struct irdma_cm_node *cm_node)
1431 struct irdma_puda_buf *sqbuf;
1432 struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi;
1434 sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, NULL, NULL,
1437 irdma_puda_send_buf(vsi->ilq, sqbuf);
1441 * irdma_send_fin - Send FIN pkt
1442 * @cm_node: connection's node
1444 static int irdma_send_fin(struct irdma_cm_node *cm_node)
1446 struct irdma_puda_buf *sqbuf;
1448 sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, NULL, NULL,
1453 return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 1,
1458 * irdma_find_listener - find a cm node listening on this addr-port pair
1459 * @cm_core: cm's core
1460 * @dst_addr: listener ip addr
1461 * @dst_port: listener tcp port num
1462 * @vlan_id: virtual LAN ID
1463 * @listener_state: state to match with listen node's
1465 static struct irdma_cm_listener *
1466 irdma_find_listener(struct irdma_cm_core *cm_core, u32 *dst_addr, u16 dst_port,
1467 u16 vlan_id, enum irdma_cm_listener_state listener_state)
1469 struct irdma_cm_listener *listen_node;
1470 static const u32 ip_zero[4] = { 0, 0, 0, 0 };
1473 unsigned long flags;
1475 /* walk list and find cm_node associated with this session ID */
1476 spin_lock_irqsave(&cm_core->listen_list_lock, flags);
1477 list_for_each_entry (listen_node, &cm_core->listen_list, list) {
1478 memcpy(listen_addr, listen_node->loc_addr, sizeof(listen_addr));
1479 listen_port = listen_node->loc_port;
1480 /* compare node pair, return node handle if a match */
1481 if ((!memcmp(listen_addr, dst_addr, sizeof(listen_addr)) ||
1482 !memcmp(listen_addr, ip_zero, sizeof(listen_addr))) &&
1483 listen_port == dst_port &&
1484 vlan_id == listen_node->vlan_id &&
1485 (listener_state & listen_node->listener_state)) {
1486 refcount_inc(&listen_node->refcnt);
1487 spin_unlock_irqrestore(&cm_core->listen_list_lock,
1489 trace_irdma_find_listener(listen_node);
1493 spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
1499 * irdma_del_multiple_qhash - Remove qhash and child listens
1500 * @iwdev: iWarp device
1501 * @cm_info: CM info for parent listen node
1502 * @cm_parent_listen_node: The parent listen node
1504 static int irdma_del_multiple_qhash(struct irdma_device *iwdev,
1505 struct irdma_cm_info *cm_info,
1506 struct irdma_cm_listener *cm_parent_listen_node)
1508 struct irdma_cm_listener *child_listen_node;
1509 struct list_head *pos, *tpos;
1510 unsigned long flags;
1513 spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, flags);
1514 list_for_each_safe (pos, tpos,
1515 &cm_parent_listen_node->child_listen_list) {
1516 child_listen_node = list_entry(pos, struct irdma_cm_listener,
1518 if (child_listen_node->ipv4)
1519 ibdev_dbg(&iwdev->ibdev,
1520 "CM: removing child listen for IP=%pI4, port=%d, vlan=%d\n",
1521 child_listen_node->loc_addr,
1522 child_listen_node->loc_port,
1523 child_listen_node->vlan_id);
1525 ibdev_dbg(&iwdev->ibdev,
1526 "CM: removing child listen for IP=%pI6, port=%d, vlan=%d\n",
1527 child_listen_node->loc_addr,
1528 child_listen_node->loc_port,
1529 child_listen_node->vlan_id);
1530 trace_irdma_del_multiple_qhash(child_listen_node);
1532 memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
1533 sizeof(cm_info->loc_addr));
1534 cm_info->vlan_id = child_listen_node->vlan_id;
1535 if (child_listen_node->qhash_set) {
1536 ret = irdma_manage_qhash(iwdev, cm_info,
1537 IRDMA_QHASH_TYPE_TCP_SYN,
1538 IRDMA_QHASH_MANAGE_TYPE_DELETE,
1540 child_listen_node->qhash_set = false;
1544 ibdev_dbg(&iwdev->ibdev,
1545 "CM: Child listen node freed = %p\n",
1547 kfree(child_listen_node);
1548 cm_parent_listen_node->cm_core->stats_listen_nodes_destroyed++;
1550 spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
1556 * irdma_netdev_vlan_ipv6 - Gets the netdev and mac
1557 * @addr: local IPv6 address
1558 * @vlan_id: vlan id for the given IPv6 address
1559 * @mac: mac address for the given IPv6 address
1561 * Returns the net_device of the IPv6 address and also sets the
1562 * vlan id and mac for that address.
1564 struct net_device *irdma_netdev_vlan_ipv6(u32 *addr, u16 *vlan_id, u8 *mac)
1566 struct net_device *ip_dev = NULL;
1567 struct in6_addr laddr6;
1569 if (!IS_ENABLED(CONFIG_IPV6))
1572 irdma_copy_ip_htonl(laddr6.in6_u.u6_addr32, addr);
1574 *vlan_id = 0xFFFF; /* Match rdma_vlan_dev_vlan_id() */
1579 for_each_netdev_rcu (&init_net, ip_dev) {
1580 if (ipv6_chk_addr(&init_net, &laddr6, ip_dev, 1)) {
1582 *vlan_id = rdma_vlan_dev_vlan_id(ip_dev);
1583 if (ip_dev->dev_addr && mac)
1584 ether_addr_copy(mac, ip_dev->dev_addr);
1594 * irdma_get_vlan_ipv4 - Returns the vlan_id for IPv4 address
1595 * @addr: local IPv4 address
1597 u16 irdma_get_vlan_ipv4(u32 *addr)
1599 struct net_device *netdev;
1600 u16 vlan_id = 0xFFFF;
1602 netdev = ip_dev_find(&init_net, htonl(addr[0]));
1604 vlan_id = rdma_vlan_dev_vlan_id(netdev);
1612 * irdma_add_mqh_6 - Adds multiple qhashes for IPv6
1613 * @iwdev: iWarp device
1614 * @cm_info: CM info for parent listen node
1615 * @cm_parent_listen_node: The parent listen node
1617 * Adds a qhash and a child listen node for every IPv6 address
1618 * on the adapter and adds the associated qhash filter
1620 static int irdma_add_mqh_6(struct irdma_device *iwdev,
1621 struct irdma_cm_info *cm_info,
1622 struct irdma_cm_listener *cm_parent_listen_node)
1624 struct net_device *ip_dev;
1625 struct inet6_dev *idev;
1626 struct inet6_ifaddr *ifp, *tmp;
1627 struct irdma_cm_listener *child_listen_node;
1628 unsigned long flags;
1632 for_each_netdev(&init_net, ip_dev) {
1633 if (!(ip_dev->flags & IFF_UP))
1636 if (((rdma_vlan_dev_vlan_id(ip_dev) >= VLAN_N_VID) ||
1637 (rdma_vlan_dev_real_dev(ip_dev) != iwdev->netdev)) &&
1638 ip_dev != iwdev->netdev)
1641 idev = __in6_dev_get(ip_dev);
1643 ibdev_dbg(&iwdev->ibdev, "CM: idev == NULL\n");
1646 list_for_each_entry_safe (ifp, tmp, &idev->addr_list, if_list) {
1647 ibdev_dbg(&iwdev->ibdev, "CM: IP=%pI6, vlan_id=%d, MAC=%pM\n",
1648 &ifp->addr, rdma_vlan_dev_vlan_id(ip_dev),
1650 child_listen_node = kzalloc(sizeof(*child_listen_node), GFP_KERNEL);
1651 ibdev_dbg(&iwdev->ibdev, "CM: Allocating child listener %p\n",
1653 if (!child_listen_node) {
1654 ibdev_dbg(&iwdev->ibdev, "CM: listener memory allocation\n");
1659 cm_info->vlan_id = rdma_vlan_dev_vlan_id(ip_dev);
1660 cm_parent_listen_node->vlan_id = cm_info->vlan_id;
1661 memcpy(child_listen_node, cm_parent_listen_node,
1662 sizeof(*child_listen_node));
1663 irdma_copy_ip_ntohl(child_listen_node->loc_addr,
1664 ifp->addr.in6_u.u6_addr32);
1665 memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
1666 sizeof(cm_info->loc_addr));
1667 ret = irdma_manage_qhash(iwdev, cm_info,
1668 IRDMA_QHASH_TYPE_TCP_SYN,
1669 IRDMA_QHASH_MANAGE_TYPE_ADD,
1672 kfree(child_listen_node);
1676 trace_irdma_add_mqh_6(iwdev, child_listen_node,
1679 child_listen_node->qhash_set = true;
1680 spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, flags);
1681 list_add(&child_listen_node->child_listen_list,
1682 &cm_parent_listen_node->child_listen_list);
1683 spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
1684 cm_parent_listen_node->cm_core->stats_listen_nodes_created++;
1694 * irdma_add_mqh_4 - Adds multiple qhashes for IPv4
1695 * @iwdev: iWarp device
1696 * @cm_info: CM info for parent listen node
1697 * @cm_parent_listen_node: The parent listen node
1699 * Adds a qhash and a child listen node for every IPv4 address
1700 * on the adapter and adds the associated qhash filter
1702 static int irdma_add_mqh_4(struct irdma_device *iwdev,
1703 struct irdma_cm_info *cm_info,
1704 struct irdma_cm_listener *cm_parent_listen_node)
1706 struct net_device *ip_dev;
1707 struct in_device *idev;
1708 struct irdma_cm_listener *child_listen_node;
1709 unsigned long flags;
1710 const struct in_ifaddr *ifa;
1714 for_each_netdev(&init_net, ip_dev) {
1715 if (!(ip_dev->flags & IFF_UP))
1718 if (((rdma_vlan_dev_vlan_id(ip_dev) >= VLAN_N_VID) ||
1719 (rdma_vlan_dev_real_dev(ip_dev) != iwdev->netdev)) &&
1720 ip_dev != iwdev->netdev)
1723 idev = in_dev_get(ip_dev);
1724 in_dev_for_each_ifa_rtnl(ifa, idev) {
1725 ibdev_dbg(&iwdev->ibdev,
1726 "CM: Allocating child CM Listener forIP=%pI4, vlan_id=%d, MAC=%pM\n",
1727 &ifa->ifa_address, rdma_vlan_dev_vlan_id(ip_dev),
1729 child_listen_node = kzalloc(sizeof(*child_listen_node), GFP_KERNEL);
1730 cm_parent_listen_node->cm_core->stats_listen_nodes_created++;
1731 ibdev_dbg(&iwdev->ibdev, "CM: Allocating child listener %p\n",
1733 if (!child_listen_node) {
1734 ibdev_dbg(&iwdev->ibdev, "CM: listener memory allocation\n");
1740 cm_info->vlan_id = rdma_vlan_dev_vlan_id(ip_dev);
1741 cm_parent_listen_node->vlan_id = cm_info->vlan_id;
1742 memcpy(child_listen_node, cm_parent_listen_node,
1743 sizeof(*child_listen_node));
1744 child_listen_node->loc_addr[0] =
1745 ntohl(ifa->ifa_address);
1746 memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
1747 sizeof(cm_info->loc_addr));
1748 ret = irdma_manage_qhash(iwdev, cm_info,
1749 IRDMA_QHASH_TYPE_TCP_SYN,
1750 IRDMA_QHASH_MANAGE_TYPE_ADD,
1753 kfree(child_listen_node);
1754 cm_parent_listen_node->cm_core
1755 ->stats_listen_nodes_created--;
1759 trace_irdma_add_mqh_4(iwdev, child_listen_node,
1762 child_listen_node->qhash_set = true;
1763 spin_lock_irqsave(&iwdev->cm_core.listen_list_lock,
1765 list_add(&child_listen_node->child_listen_list,
1766 &cm_parent_listen_node->child_listen_list);
1767 spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
1778 * irdma_add_mqh - Adds multiple qhashes
1779 * @iwdev: iWarp device
1780 * @cm_info: CM info for parent listen node
1781 * @cm_listen_node: The parent listen node
1783 static int irdma_add_mqh(struct irdma_device *iwdev,
1784 struct irdma_cm_info *cm_info,
1785 struct irdma_cm_listener *cm_listen_node)
1788 return irdma_add_mqh_4(iwdev, cm_info, cm_listen_node);
1790 return irdma_add_mqh_6(iwdev, cm_info, cm_listen_node);
1794 * irdma_reset_list_prep - add connection nodes slated for reset to list
1795 * @cm_core: cm's core
1796 * @listener: pointer to listener node
1797 * @reset_list: a list to which cm_node will be selected
1799 static void irdma_reset_list_prep(struct irdma_cm_core *cm_core,
1800 struct irdma_cm_listener *listener,
1801 struct list_head *reset_list)
1803 struct irdma_cm_node *cm_node;
1806 hash_for_each_rcu(cm_core->cm_hash_tbl, bkt, cm_node, list) {
1807 if (cm_node->listener == listener &&
1808 !cm_node->accelerated &&
1809 refcount_inc_not_zero(&cm_node->refcnt))
1810 list_add(&cm_node->reset_entry, reset_list);
1815 * irdma_dec_refcnt_listen - delete listener and associated cm nodes
1816 * @cm_core: cm's core
1817 * @listener: pointer to listener node
1818 * @free_hanging_nodes: to free associated cm_nodes
1819 * @apbvt_del: flag to delete the apbvt
1821 static int irdma_dec_refcnt_listen(struct irdma_cm_core *cm_core,
1822 struct irdma_cm_listener *listener,
1823 int free_hanging_nodes, bool apbvt_del)
1826 struct list_head *list_pos;
1827 struct list_head *list_temp;
1828 struct irdma_cm_node *cm_node;
1829 struct list_head reset_list;
1830 struct irdma_cm_info nfo;
1831 enum irdma_cm_node_state old_state;
1832 unsigned long flags;
1834 trace_irdma_dec_refcnt_listen(listener, __builtin_return_address(0));
1835 /* free non-accelerated child nodes for this listener */
1836 INIT_LIST_HEAD(&reset_list);
1837 if (free_hanging_nodes) {
1839 irdma_reset_list_prep(cm_core, listener, &reset_list);
1843 list_for_each_safe (list_pos, list_temp, &reset_list) {
1844 cm_node = container_of(list_pos, struct irdma_cm_node,
1846 if (cm_node->state >= IRDMA_CM_STATE_FIN_WAIT1) {
1847 irdma_rem_ref_cm_node(cm_node);
1851 irdma_cleanup_retrans_entry(cm_node);
1852 err = irdma_send_reset(cm_node);
1854 cm_node->state = IRDMA_CM_STATE_CLOSED;
1855 ibdev_dbg(&cm_node->iwdev->ibdev,
1856 "CM: send reset failed\n");
1858 old_state = cm_node->state;
1859 cm_node->state = IRDMA_CM_STATE_LISTENER_DESTROYED;
1860 if (old_state != IRDMA_CM_STATE_MPAREQ_RCVD)
1861 irdma_rem_ref_cm_node(cm_node);
1865 if (refcount_dec_and_test(&listener->refcnt)) {
1866 spin_lock_irqsave(&cm_core->listen_list_lock, flags);
1867 list_del(&listener->list);
1868 spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
1871 irdma_del_apbvt(listener->iwdev,
1872 listener->apbvt_entry);
1873 memcpy(nfo.loc_addr, listener->loc_addr, sizeof(nfo.loc_addr));
1874 nfo.loc_port = listener->loc_port;
1875 nfo.ipv4 = listener->ipv4;
1876 nfo.vlan_id = listener->vlan_id;
1877 nfo.user_pri = listener->user_pri;
1878 nfo.qh_qpid = listener->iwdev->vsi.ilq->qp_id;
1880 if (!list_empty(&listener->child_listen_list)) {
1881 irdma_del_multiple_qhash(listener->iwdev, &nfo,
1884 if (listener->qhash_set)
1885 irdma_manage_qhash(listener->iwdev,
1887 IRDMA_QHASH_TYPE_TCP_SYN,
1888 IRDMA_QHASH_MANAGE_TYPE_DELETE,
1892 cm_core->stats_listen_destroyed++;
1893 cm_core->stats_listen_nodes_destroyed++;
1894 ibdev_dbg(&listener->iwdev->ibdev,
1895 "CM: loc_port=0x%04x loc_addr=%pI4 cm_listen_node=%p cm_id=%p qhash_set=%d vlan_id=%d apbvt_del=%d\n",
1896 listener->loc_port, listener->loc_addr, listener,
1897 listener->cm_id, listener->qhash_set,
1898 listener->vlan_id, apbvt_del);
1908 * irdma_cm_del_listen - delete a listener
1909 * @cm_core: cm's core
1910 * @listener: passive connection's listener
1911 * @apbvt_del: flag to delete apbvt
1913 static int irdma_cm_del_listen(struct irdma_cm_core *cm_core,
1914 struct irdma_cm_listener *listener,
1917 listener->listener_state = IRDMA_CM_LISTENER_PASSIVE_STATE;
1918 listener->cm_id = NULL;
1920 return irdma_dec_refcnt_listen(cm_core, listener, 1, apbvt_del);
1924 * irdma_addr_resolve_neigh - resolve neighbor address
1925 * @iwdev: iwarp device structure
1926 * @src_ip: local ip address
1927 * @dst_ip: remote ip address
1928 * @arpindex: if there is an arp entry
1930 static int irdma_addr_resolve_neigh(struct irdma_device *iwdev, u32 src_ip,
1931 u32 dst_ip, int arpindex)
1934 struct neighbour *neigh;
1936 __be32 dst_ipaddr = htonl(dst_ip);
1937 __be32 src_ipaddr = htonl(src_ip);
1939 rt = ip_route_output(&init_net, dst_ipaddr, src_ipaddr, 0, 0);
1941 ibdev_dbg(&iwdev->ibdev, "CM: ip_route_output fail\n");
1945 neigh = dst_neigh_lookup(&rt->dst, &dst_ipaddr);
1949 if (neigh->nud_state & NUD_VALID)
1950 rc = irdma_add_arp(iwdev->rf, &dst_ip, true, neigh->ha);
1952 neigh_event_send(neigh, NULL);
1954 neigh_release(neigh);
1962 * irdma_get_dst_ipv6 - get destination cache entry via ipv6 lookup
1963 * @src_addr: local ipv6 sock address
1964 * @dst_addr: destination ipv6 sock address
1966 static struct dst_entry *irdma_get_dst_ipv6(struct sockaddr_in6 *src_addr,
1967 struct sockaddr_in6 *dst_addr)
1969 struct dst_entry *dst = NULL;
1971 if ((IS_ENABLED(CONFIG_IPV6))) {
1972 struct flowi6 fl6 = {};
1974 fl6.daddr = dst_addr->sin6_addr;
1975 fl6.saddr = src_addr->sin6_addr;
1976 if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
1977 fl6.flowi6_oif = dst_addr->sin6_scope_id;
1979 dst = ip6_route_output(&init_net, NULL, &fl6);
1986 * irdma_addr_resolve_neigh_ipv6 - resolve neighbor ipv6 address
1987 * @iwdev: iwarp device structure
1988 * @src: local ip address
1989 * @dest: remote ip address
1990 * @arpindex: if there is an arp entry
1992 static int irdma_addr_resolve_neigh_ipv6(struct irdma_device *iwdev, u32 *src,
1993 u32 *dest, int arpindex)
1995 struct neighbour *neigh;
1997 struct dst_entry *dst;
1998 struct sockaddr_in6 dst_addr = {};
1999 struct sockaddr_in6 src_addr = {};
2001 dst_addr.sin6_family = AF_INET6;
2002 irdma_copy_ip_htonl(dst_addr.sin6_addr.in6_u.u6_addr32, dest);
2003 src_addr.sin6_family = AF_INET6;
2004 irdma_copy_ip_htonl(src_addr.sin6_addr.in6_u.u6_addr32, src);
2005 dst = irdma_get_dst_ipv6(&src_addr, &dst_addr);
2006 if (!dst || dst->error) {
2009 ibdev_dbg(&iwdev->ibdev,
2010 "CM: ip6_route_output returned dst->error = %d\n",
2016 neigh = dst_neigh_lookup(dst, dst_addr.sin6_addr.in6_u.u6_addr32);
2020 ibdev_dbg(&iwdev->ibdev, "CM: dst_neigh_lookup MAC=%pM\n",
2023 trace_irdma_addr_resolve(iwdev, neigh->ha);
2025 if (neigh->nud_state & NUD_VALID)
2026 rc = irdma_add_arp(iwdev->rf, dest, false, neigh->ha);
2028 neigh_event_send(neigh, NULL);
2030 neigh_release(neigh);
2038 * irdma_find_node - find a cm node that matches the reference cm node
2039 * @cm_core: cm's core
2040 * @rem_port: remote tcp port num
2041 * @rem_addr: remote ip addr
2042 * @loc_port: local tcp port num
2043 * @loc_addr: local ip addr
2044 * @vlan_id: local VLAN ID
2046 struct irdma_cm_node *irdma_find_node(struct irdma_cm_core *cm_core,
2047 u16 rem_port, u32 *rem_addr, u16 loc_port,
2048 u32 *loc_addr, u16 vlan_id)
2050 struct irdma_cm_node *cm_node;
2051 u32 key = (rem_port << 16) | loc_port;
2054 hash_for_each_possible_rcu(cm_core->cm_hash_tbl, cm_node, list, key) {
2055 if (cm_node->vlan_id == vlan_id &&
2056 cm_node->loc_port == loc_port && cm_node->rem_port == rem_port &&
2057 !memcmp(cm_node->loc_addr, loc_addr, sizeof(cm_node->loc_addr)) &&
2058 !memcmp(cm_node->rem_addr, rem_addr, sizeof(cm_node->rem_addr))) {
2059 if (!refcount_inc_not_zero(&cm_node->refcnt))
2062 trace_irdma_find_node(cm_node, 0, NULL);
2075 * irdma_add_hte_node - add a cm node to the hash table
2076 * @cm_core: cm's core
2077 * @cm_node: connection's node
2079 static void irdma_add_hte_node(struct irdma_cm_core *cm_core,
2080 struct irdma_cm_node *cm_node)
2082 unsigned long flags;
2083 u32 key = (cm_node->rem_port << 16) | cm_node->loc_port;
2085 spin_lock_irqsave(&cm_core->ht_lock, flags);
2086 hash_add_rcu(cm_core->cm_hash_tbl, &cm_node->list, key);
2087 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
2091 * irdma_ipv4_is_lpb - check if loopback
2092 * @loc_addr: local addr to compare
2093 * @rem_addr: remote address
2095 bool irdma_ipv4_is_lpb(u32 loc_addr, u32 rem_addr)
2097 return ipv4_is_loopback(htonl(rem_addr)) || (loc_addr == rem_addr);
2101 * irdma_ipv6_is_lpb - check if loopback
2102 * @loc_addr: local addr to compare
2103 * @rem_addr: remote address
2105 bool irdma_ipv6_is_lpb(u32 *loc_addr, u32 *rem_addr)
2107 struct in6_addr raddr6;
2109 irdma_copy_ip_htonl(raddr6.in6_u.u6_addr32, rem_addr);
2111 return !memcmp(loc_addr, rem_addr, 16) || ipv6_addr_loopback(&raddr6);
2115 * irdma_cm_create_ah - create a cm address handle
2116 * @cm_node: The connection manager node to create AH for
2117 * @wait: Provides option to wait for ah creation or not
2119 static int irdma_cm_create_ah(struct irdma_cm_node *cm_node, bool wait)
2121 struct irdma_ah_info ah_info = {};
2122 struct irdma_device *iwdev = cm_node->iwdev;
2124 ether_addr_copy(ah_info.mac_addr, iwdev->netdev->dev_addr);
2126 ah_info.hop_ttl = 0x40;
2127 ah_info.tc_tos = cm_node->tos;
2128 ah_info.vsi = &iwdev->vsi;
2130 if (cm_node->ipv4) {
2131 ah_info.ipv4_valid = true;
2132 ah_info.dest_ip_addr[0] = cm_node->rem_addr[0];
2133 ah_info.src_ip_addr[0] = cm_node->loc_addr[0];
2134 ah_info.do_lpbk = irdma_ipv4_is_lpb(ah_info.src_ip_addr[0],
2135 ah_info.dest_ip_addr[0]);
2137 memcpy(ah_info.dest_ip_addr, cm_node->rem_addr,
2138 sizeof(ah_info.dest_ip_addr));
2139 memcpy(ah_info.src_ip_addr, cm_node->loc_addr,
2140 sizeof(ah_info.src_ip_addr));
2141 ah_info.do_lpbk = irdma_ipv6_is_lpb(ah_info.src_ip_addr,
2142 ah_info.dest_ip_addr);
2145 ah_info.vlan_tag = cm_node->vlan_id;
2146 if (cm_node->vlan_id < VLAN_N_VID) {
2147 ah_info.insert_vlan_tag = 1;
2148 ah_info.vlan_tag |= cm_node->user_pri << VLAN_PRIO_SHIFT;
2151 ah_info.dst_arpindex =
2152 irdma_arp_table(iwdev->rf, ah_info.dest_ip_addr,
2153 ah_info.ipv4_valid, NULL, IRDMA_ARP_RESOLVE);
2155 if (irdma_puda_create_ah(&iwdev->rf->sc_dev, &ah_info, wait,
2156 IRDMA_PUDA_RSRC_TYPE_ILQ, cm_node,
2160 trace_irdma_create_ah(cm_node);
2165 * irdma_cm_free_ah - free a cm address handle
2166 * @cm_node: The connection manager node to create AH for
2168 static void irdma_cm_free_ah(struct irdma_cm_node *cm_node)
2170 struct irdma_device *iwdev = cm_node->iwdev;
2172 trace_irdma_cm_free_ah(cm_node);
2173 irdma_puda_free_ah(&iwdev->rf->sc_dev, cm_node->ah);
2178 * irdma_make_cm_node - create a new instance of a cm node
2179 * @cm_core: cm's core
2180 * @iwdev: iwarp device structure
2181 * @cm_info: quad info for connection
2182 * @listener: passive connection's listener
2184 static struct irdma_cm_node *
2185 irdma_make_cm_node(struct irdma_cm_core *cm_core, struct irdma_device *iwdev,
2186 struct irdma_cm_info *cm_info,
2187 struct irdma_cm_listener *listener)
2189 struct irdma_cm_node *cm_node;
2192 struct net_device *netdev = iwdev->netdev;
2194 /* create an hte and cm_node for this instance */
2195 cm_node = kzalloc(sizeof(*cm_node), GFP_ATOMIC);
2199 /* set our node specific transport info */
2200 cm_node->ipv4 = cm_info->ipv4;
2201 cm_node->vlan_id = cm_info->vlan_id;
2202 if (cm_node->vlan_id >= VLAN_N_VID && iwdev->dcb_vlan_mode)
2203 cm_node->vlan_id = 0;
2204 cm_node->tos = cm_info->tos;
2205 cm_node->user_pri = cm_info->user_pri;
2207 if (listener->tos != cm_info->tos)
2208 ibdev_warn(&iwdev->ibdev,
2209 "application TOS[%d] and remote client TOS[%d] mismatch\n",
2210 listener->tos, cm_info->tos);
2211 if (iwdev->vsi.dscp_mode) {
2212 cm_node->user_pri = listener->user_pri;
2214 cm_node->tos = max(listener->tos, cm_info->tos);
2215 cm_node->user_pri = rt_tos2priority(cm_node->tos);
2217 ibdev_dbg(&iwdev->ibdev,
2218 "DCB: listener: TOS:[%d] UP:[%d]\n", cm_node->tos,
2220 trace_irdma_listener_tos(iwdev, cm_node->tos,
2223 memcpy(cm_node->loc_addr, cm_info->loc_addr, sizeof(cm_node->loc_addr));
2224 memcpy(cm_node->rem_addr, cm_info->rem_addr, sizeof(cm_node->rem_addr));
2225 cm_node->loc_port = cm_info->loc_port;
2226 cm_node->rem_port = cm_info->rem_port;
2228 cm_node->mpa_frame_rev = IRDMA_CM_DEFAULT_MPA_VER;
2229 cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO;
2230 cm_node->iwdev = iwdev;
2231 cm_node->dev = &iwdev->rf->sc_dev;
2233 cm_node->ird_size = cm_node->dev->hw_attrs.max_hw_ird;
2234 cm_node->ord_size = cm_node->dev->hw_attrs.max_hw_ord;
2236 cm_node->listener = listener;
2237 cm_node->cm_id = cm_info->cm_id;
2238 ether_addr_copy(cm_node->loc_mac, netdev->dev_addr);
2239 spin_lock_init(&cm_node->retrans_list_lock);
2240 cm_node->ack_rcvd = false;
2242 init_completion(&cm_node->establish_comp);
2243 refcount_set(&cm_node->refcnt, 1);
2244 /* associate our parent CM core */
2245 cm_node->cm_core = cm_core;
2246 cm_node->tcp_cntxt.loc_id = IRDMA_CM_DEFAULT_LOCAL_ID;
2247 cm_node->tcp_cntxt.rcv_wscale = iwdev->rcv_wscale;
2248 cm_node->tcp_cntxt.rcv_wnd = iwdev->rcv_wnd >> cm_node->tcp_cntxt.rcv_wscale;
2249 if (cm_node->ipv4) {
2250 cm_node->tcp_cntxt.loc_seq_num = secure_tcp_seq(htonl(cm_node->loc_addr[0]),
2251 htonl(cm_node->rem_addr[0]),
2252 htons(cm_node->loc_port),
2253 htons(cm_node->rem_port));
2254 cm_node->tcp_cntxt.mss = iwdev->vsi.mtu - IRDMA_MTU_TO_MSS_IPV4;
2255 } else if (IS_ENABLED(CONFIG_IPV6)) {
2257 htonl(cm_node->loc_addr[0]), htonl(cm_node->loc_addr[1]),
2258 htonl(cm_node->loc_addr[2]), htonl(cm_node->loc_addr[3])
2261 htonl(cm_node->rem_addr[0]), htonl(cm_node->rem_addr[1]),
2262 htonl(cm_node->rem_addr[2]), htonl(cm_node->rem_addr[3])
2264 cm_node->tcp_cntxt.loc_seq_num = secure_tcpv6_seq(loc, rem,
2265 htons(cm_node->loc_port),
2266 htons(cm_node->rem_port));
2267 cm_node->tcp_cntxt.mss = iwdev->vsi.mtu - IRDMA_MTU_TO_MSS_IPV6;
2270 if ((cm_node->ipv4 &&
2271 irdma_ipv4_is_lpb(cm_node->loc_addr[0], cm_node->rem_addr[0])) ||
2273 irdma_ipv6_is_lpb(cm_node->loc_addr, cm_node->rem_addr))) {
2274 cm_node->do_lpb = true;
2275 arpindex = irdma_arp_table(iwdev->rf, cm_node->rem_addr,
2276 cm_node->ipv4, NULL,
2279 oldarpindex = irdma_arp_table(iwdev->rf, cm_node->rem_addr,
2280 cm_node->ipv4, NULL,
2283 arpindex = irdma_addr_resolve_neigh(iwdev,
2284 cm_info->loc_addr[0],
2285 cm_info->rem_addr[0],
2287 else if (IS_ENABLED(CONFIG_IPV6))
2288 arpindex = irdma_addr_resolve_neigh_ipv6(iwdev,
2299 ether_addr_copy(cm_node->rem_mac,
2300 iwdev->rf->arp_table[arpindex].mac_addr);
2301 irdma_add_hte_node(cm_core, cm_node);
2302 cm_core->stats_nodes_created++;
2311 static void irdma_destroy_connection(struct irdma_cm_node *cm_node)
2313 struct irdma_cm_core *cm_core = cm_node->cm_core;
2314 struct irdma_qp *iwqp;
2315 struct irdma_cm_info nfo;
2317 /* if the node is destroyed before connection was accelerated */
2318 if (!cm_node->accelerated && cm_node->accept_pend) {
2319 ibdev_dbg(&cm_node->iwdev->ibdev,
2320 "CM: node destroyed before established\n");
2321 atomic_dec(&cm_node->listener->pend_accepts_cnt);
2323 if (cm_node->close_entry)
2324 irdma_handle_close_entry(cm_node, 0);
2325 if (cm_node->listener) {
2326 irdma_dec_refcnt_listen(cm_core, cm_node->listener, 0, true);
2328 if (cm_node->apbvt_set) {
2329 irdma_del_apbvt(cm_node->iwdev, cm_node->apbvt_entry);
2330 cm_node->apbvt_set = 0;
2332 irdma_get_addr_info(cm_node, &nfo);
2333 if (cm_node->qhash_set) {
2334 nfo.qh_qpid = cm_node->iwdev->vsi.ilq->qp_id;
2335 irdma_manage_qhash(cm_node->iwdev, &nfo,
2336 IRDMA_QHASH_TYPE_TCP_ESTABLISHED,
2337 IRDMA_QHASH_MANAGE_TYPE_DELETE, NULL,
2339 cm_node->qhash_set = 0;
2343 iwqp = cm_node->iwqp;
2345 cm_node->cm_id->rem_ref(cm_node->cm_id);
2346 cm_node->cm_id = NULL;
2348 irdma_qp_rem_ref(&iwqp->ibqp);
2349 cm_node->iwqp = NULL;
2350 } else if (cm_node->qhash_set) {
2351 irdma_get_addr_info(cm_node, &nfo);
2352 nfo.qh_qpid = cm_node->iwdev->vsi.ilq->qp_id;
2353 irdma_manage_qhash(cm_node->iwdev, &nfo,
2354 IRDMA_QHASH_TYPE_TCP_ESTABLISHED,
2355 IRDMA_QHASH_MANAGE_TYPE_DELETE, NULL, false);
2356 cm_node->qhash_set = 0;
2359 cm_core->cm_free_ah(cm_node);
2363 * irdma_rem_ref_cm_node - destroy an instance of a cm node
2364 * @cm_node: connection's node
2366 void irdma_rem_ref_cm_node(struct irdma_cm_node *cm_node)
2368 struct irdma_cm_core *cm_core = cm_node->cm_core;
2369 unsigned long flags;
2371 trace_irdma_rem_ref_cm_node(cm_node, 0, __builtin_return_address(0));
2372 spin_lock_irqsave(&cm_core->ht_lock, flags);
2374 if (!refcount_dec_and_test(&cm_node->refcnt)) {
2375 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
2378 if (cm_node->iwqp) {
2379 cm_node->iwqp->cm_node = NULL;
2380 cm_node->iwqp->cm_id = NULL;
2382 hash_del_rcu(&cm_node->list);
2383 cm_node->cm_core->stats_nodes_destroyed++;
2385 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
2387 irdma_destroy_connection(cm_node);
2389 kfree_rcu(cm_node, rcu_head);
2393 * irdma_handle_fin_pkt - FIN packet received
2394 * @cm_node: connection's node
2396 static void irdma_handle_fin_pkt(struct irdma_cm_node *cm_node)
2398 switch (cm_node->state) {
2399 case IRDMA_CM_STATE_SYN_RCVD:
2400 case IRDMA_CM_STATE_SYN_SENT:
2401 case IRDMA_CM_STATE_ESTABLISHED:
2402 case IRDMA_CM_STATE_MPAREJ_RCVD:
2403 cm_node->tcp_cntxt.rcv_nxt++;
2404 irdma_cleanup_retrans_entry(cm_node);
2405 cm_node->state = IRDMA_CM_STATE_LAST_ACK;
2406 irdma_send_fin(cm_node);
2408 case IRDMA_CM_STATE_MPAREQ_SENT:
2409 irdma_create_event(cm_node, IRDMA_CM_EVENT_ABORTED);
2410 cm_node->tcp_cntxt.rcv_nxt++;
2411 irdma_cleanup_retrans_entry(cm_node);
2412 cm_node->state = IRDMA_CM_STATE_CLOSED;
2413 refcount_inc(&cm_node->refcnt);
2414 irdma_send_reset(cm_node);
2416 case IRDMA_CM_STATE_FIN_WAIT1:
2417 cm_node->tcp_cntxt.rcv_nxt++;
2418 irdma_cleanup_retrans_entry(cm_node);
2419 cm_node->state = IRDMA_CM_STATE_CLOSING;
2420 irdma_send_ack(cm_node);
2422 * Wait for ACK as this is simultaneous close.
2423 * After we receive ACK, do not send anything.
2427 case IRDMA_CM_STATE_FIN_WAIT2:
2428 cm_node->tcp_cntxt.rcv_nxt++;
2429 irdma_cleanup_retrans_entry(cm_node);
2430 cm_node->state = IRDMA_CM_STATE_TIME_WAIT;
2431 irdma_send_ack(cm_node);
2432 irdma_schedule_cm_timer(cm_node, NULL, IRDMA_TIMER_TYPE_CLOSE,
2435 case IRDMA_CM_STATE_TIME_WAIT:
2436 cm_node->tcp_cntxt.rcv_nxt++;
2437 irdma_cleanup_retrans_entry(cm_node);
2438 cm_node->state = IRDMA_CM_STATE_CLOSED;
2439 irdma_rem_ref_cm_node(cm_node);
2441 case IRDMA_CM_STATE_OFFLOADED:
2443 ibdev_dbg(&cm_node->iwdev->ibdev,
2444 "CM: bad state node state = %d\n", cm_node->state);
2450 * irdma_handle_rst_pkt - process received RST packet
2451 * @cm_node: connection's node
2452 * @rbuf: receive buffer
2454 static void irdma_handle_rst_pkt(struct irdma_cm_node *cm_node,
2455 struct irdma_puda_buf *rbuf)
2457 ibdev_dbg(&cm_node->iwdev->ibdev,
2458 "CM: caller: %pS cm_node=%p state=%d rem_port=0x%04x loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4\n",
2459 __builtin_return_address(0), cm_node, cm_node->state,
2460 cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr,
2463 irdma_cleanup_retrans_entry(cm_node);
2464 switch (cm_node->state) {
2465 case IRDMA_CM_STATE_SYN_SENT:
2466 case IRDMA_CM_STATE_MPAREQ_SENT:
2467 switch (cm_node->mpa_frame_rev) {
2469 /* Drop down to MPA_V1*/
2470 cm_node->mpa_frame_rev = IETF_MPA_V1;
2471 /* send a syn and goto syn sent state */
2472 cm_node->state = IRDMA_CM_STATE_SYN_SENT;
2473 if (irdma_send_syn(cm_node, 0))
2474 irdma_active_open_err(cm_node, false);
2478 irdma_active_open_err(cm_node, false);
2482 case IRDMA_CM_STATE_MPAREQ_RCVD:
2483 atomic_inc(&cm_node->passive_state);
2485 case IRDMA_CM_STATE_ESTABLISHED:
2486 case IRDMA_CM_STATE_SYN_RCVD:
2487 case IRDMA_CM_STATE_LISTENING:
2488 irdma_passive_open_err(cm_node, false);
2490 case IRDMA_CM_STATE_OFFLOADED:
2491 irdma_active_open_err(cm_node, false);
2493 case IRDMA_CM_STATE_CLOSED:
2495 case IRDMA_CM_STATE_FIN_WAIT2:
2496 case IRDMA_CM_STATE_FIN_WAIT1:
2497 case IRDMA_CM_STATE_LAST_ACK:
2498 case IRDMA_CM_STATE_TIME_WAIT:
2499 cm_node->state = IRDMA_CM_STATE_CLOSED;
2500 irdma_rem_ref_cm_node(cm_node);
2508 * irdma_handle_rcv_mpa - Process a recv'd mpa buffer
2509 * @cm_node: connection's node
2510 * @rbuf: receive buffer
2512 static void irdma_handle_rcv_mpa(struct irdma_cm_node *cm_node,
2513 struct irdma_puda_buf *rbuf)
2516 int datasize = rbuf->datalen;
2517 u8 *dataloc = rbuf->data;
2519 enum irdma_cm_event_type type = IRDMA_CM_EVENT_UNKNOWN;
2522 err = irdma_parse_mpa(cm_node, dataloc, &res_type, datasize);
2524 if (cm_node->state == IRDMA_CM_STATE_MPAREQ_SENT)
2525 irdma_active_open_err(cm_node, true);
2527 irdma_passive_open_err(cm_node, true);
2531 switch (cm_node->state) {
2532 case IRDMA_CM_STATE_ESTABLISHED:
2533 if (res_type == IRDMA_MPA_REQUEST_REJECT)
2534 ibdev_dbg(&cm_node->iwdev->ibdev,
2535 "CM: state for reject\n");
2536 cm_node->state = IRDMA_CM_STATE_MPAREQ_RCVD;
2537 type = IRDMA_CM_EVENT_MPA_REQ;
2538 irdma_send_ack(cm_node); /* ACK received MPA request */
2539 atomic_set(&cm_node->passive_state,
2540 IRDMA_PASSIVE_STATE_INDICATED);
2542 case IRDMA_CM_STATE_MPAREQ_SENT:
2543 irdma_cleanup_retrans_entry(cm_node);
2544 if (res_type == IRDMA_MPA_REQUEST_REJECT) {
2545 type = IRDMA_CM_EVENT_MPA_REJECT;
2546 cm_node->state = IRDMA_CM_STATE_MPAREJ_RCVD;
2548 type = IRDMA_CM_EVENT_CONNECTED;
2549 cm_node->state = IRDMA_CM_STATE_OFFLOADED;
2551 irdma_send_ack(cm_node);
2554 ibdev_dbg(&cm_node->iwdev->ibdev,
2555 "CM: wrong cm_node state =%d\n", cm_node->state);
2558 irdma_create_event(cm_node, type);
2562 * irdma_check_syn - Check for error on received syn ack
2563 * @cm_node: connection's node
2564 * @tcph: pointer tcp header
2566 static int irdma_check_syn(struct irdma_cm_node *cm_node, struct tcphdr *tcph)
2568 if (ntohl(tcph->ack_seq) != cm_node->tcp_cntxt.loc_seq_num) {
2569 irdma_active_open_err(cm_node, true);
2577 * irdma_check_seq - check seq numbers if OK
2578 * @cm_node: connection's node
2579 * @tcph: pointer tcp header
2581 static int irdma_check_seq(struct irdma_cm_node *cm_node, struct tcphdr *tcph)
2585 u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num;
2586 u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt;
2590 seq = ntohl(tcph->seq);
2591 ack_seq = ntohl(tcph->ack_seq);
2592 rcv_wnd = cm_node->tcp_cntxt.rcv_wnd;
2593 if (ack_seq != loc_seq_num ||
2594 !between(seq, rcv_nxt, (rcv_nxt + rcv_wnd)))
2597 ibdev_dbg(&cm_node->iwdev->ibdev,
2598 "CM: seq number err\n");
2603 void irdma_add_conn_est_qh(struct irdma_cm_node *cm_node)
2605 struct irdma_cm_info nfo;
2607 irdma_get_addr_info(cm_node, &nfo);
2608 nfo.qh_qpid = cm_node->iwdev->vsi.ilq->qp_id;
2609 irdma_manage_qhash(cm_node->iwdev, &nfo,
2610 IRDMA_QHASH_TYPE_TCP_ESTABLISHED,
2611 IRDMA_QHASH_MANAGE_TYPE_ADD,
2613 cm_node->qhash_set = true;
2617 * irdma_handle_syn_pkt - is for Passive node
2618 * @cm_node: connection's node
2619 * @rbuf: receive buffer
2621 static void irdma_handle_syn_pkt(struct irdma_cm_node *cm_node,
2622 struct irdma_puda_buf *rbuf)
2624 struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
2629 optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
2630 inc_sequence = ntohl(tcph->seq);
2632 switch (cm_node->state) {
2633 case IRDMA_CM_STATE_SYN_SENT:
2634 case IRDMA_CM_STATE_MPAREQ_SENT:
2635 /* Rcvd syn on active open connection */
2636 irdma_active_open_err(cm_node, 1);
2638 case IRDMA_CM_STATE_LISTENING:
2640 if (atomic_read(&cm_node->listener->pend_accepts_cnt) >
2641 cm_node->listener->backlog) {
2642 cm_node->cm_core->stats_backlog_drops++;
2643 irdma_passive_open_err(cm_node, false);
2646 err = irdma_handle_tcp_options(cm_node, tcph, optionsize, 1);
2648 irdma_passive_open_err(cm_node, false);
2652 err = cm_node->cm_core->cm_create_ah(cm_node, false);
2654 irdma_passive_open_err(cm_node, false);
2658 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
2659 cm_node->accept_pend = 1;
2660 atomic_inc(&cm_node->listener->pend_accepts_cnt);
2662 cm_node->state = IRDMA_CM_STATE_SYN_RCVD;
2664 case IRDMA_CM_STATE_CLOSED:
2665 irdma_cleanup_retrans_entry(cm_node);
2666 refcount_inc(&cm_node->refcnt);
2667 irdma_send_reset(cm_node);
2669 case IRDMA_CM_STATE_OFFLOADED:
2670 case IRDMA_CM_STATE_ESTABLISHED:
2671 case IRDMA_CM_STATE_FIN_WAIT1:
2672 case IRDMA_CM_STATE_FIN_WAIT2:
2673 case IRDMA_CM_STATE_MPAREQ_RCVD:
2674 case IRDMA_CM_STATE_LAST_ACK:
2675 case IRDMA_CM_STATE_CLOSING:
2676 case IRDMA_CM_STATE_UNKNOWN:
2683 * irdma_handle_synack_pkt - Process SYN+ACK packet (active side)
2684 * @cm_node: connection's node
2685 * @rbuf: receive buffer
2687 static void irdma_handle_synack_pkt(struct irdma_cm_node *cm_node,
2688 struct irdma_puda_buf *rbuf)
2690 struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
2695 optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
2696 inc_sequence = ntohl(tcph->seq);
2697 switch (cm_node->state) {
2698 case IRDMA_CM_STATE_SYN_SENT:
2699 irdma_cleanup_retrans_entry(cm_node);
2701 if (irdma_check_syn(cm_node, tcph)) {
2702 ibdev_dbg(&cm_node->iwdev->ibdev,
2703 "CM: check syn fail\n");
2706 cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
2708 err = irdma_handle_tcp_options(cm_node, tcph, optionsize, 0);
2710 ibdev_dbg(&cm_node->iwdev->ibdev,
2711 "CM: cm_node=%p tcp_options failed\n",
2715 irdma_cleanup_retrans_entry(cm_node);
2716 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
2717 irdma_send_ack(cm_node); /* ACK for the syn_ack */
2718 err = irdma_send_mpa_request(cm_node);
2720 ibdev_dbg(&cm_node->iwdev->ibdev,
2721 "CM: cm_node=%p irdma_send_mpa_request failed\n",
2725 cm_node->state = IRDMA_CM_STATE_MPAREQ_SENT;
2727 case IRDMA_CM_STATE_MPAREQ_RCVD:
2728 irdma_passive_open_err(cm_node, true);
2730 case IRDMA_CM_STATE_LISTENING:
2731 cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
2732 irdma_cleanup_retrans_entry(cm_node);
2733 cm_node->state = IRDMA_CM_STATE_CLOSED;
2734 irdma_send_reset(cm_node);
2736 case IRDMA_CM_STATE_CLOSED:
2737 cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
2738 irdma_cleanup_retrans_entry(cm_node);
2739 refcount_inc(&cm_node->refcnt);
2740 irdma_send_reset(cm_node);
2742 case IRDMA_CM_STATE_ESTABLISHED:
2743 case IRDMA_CM_STATE_FIN_WAIT1:
2744 case IRDMA_CM_STATE_FIN_WAIT2:
2745 case IRDMA_CM_STATE_LAST_ACK:
2746 case IRDMA_CM_STATE_OFFLOADED:
2747 case IRDMA_CM_STATE_CLOSING:
2748 case IRDMA_CM_STATE_UNKNOWN:
2749 case IRDMA_CM_STATE_MPAREQ_SENT:
2756 * irdma_handle_ack_pkt - process packet with ACK
2757 * @cm_node: connection's node
2758 * @rbuf: receive buffer
2760 static int irdma_handle_ack_pkt(struct irdma_cm_node *cm_node,
2761 struct irdma_puda_buf *rbuf)
2763 struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
2767 u32 datasize = rbuf->datalen;
2769 optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
2771 if (irdma_check_seq(cm_node, tcph))
2774 inc_sequence = ntohl(tcph->seq);
2775 switch (cm_node->state) {
2776 case IRDMA_CM_STATE_SYN_RCVD:
2777 irdma_cleanup_retrans_entry(cm_node);
2778 ret = irdma_handle_tcp_options(cm_node, tcph, optionsize, 1);
2781 cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
2782 cm_node->state = IRDMA_CM_STATE_ESTABLISHED;
2784 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
2785 irdma_handle_rcv_mpa(cm_node, rbuf);
2788 case IRDMA_CM_STATE_ESTABLISHED:
2789 irdma_cleanup_retrans_entry(cm_node);
2791 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
2792 irdma_handle_rcv_mpa(cm_node, rbuf);
2795 case IRDMA_CM_STATE_MPAREQ_SENT:
2796 cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
2798 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
2799 cm_node->ack_rcvd = false;
2800 irdma_handle_rcv_mpa(cm_node, rbuf);
2802 cm_node->ack_rcvd = true;
2805 case IRDMA_CM_STATE_LISTENING:
2806 irdma_cleanup_retrans_entry(cm_node);
2807 cm_node->state = IRDMA_CM_STATE_CLOSED;
2808 irdma_send_reset(cm_node);
2810 case IRDMA_CM_STATE_CLOSED:
2811 irdma_cleanup_retrans_entry(cm_node);
2812 refcount_inc(&cm_node->refcnt);
2813 irdma_send_reset(cm_node);
2815 case IRDMA_CM_STATE_LAST_ACK:
2816 case IRDMA_CM_STATE_CLOSING:
2817 irdma_cleanup_retrans_entry(cm_node);
2818 cm_node->state = IRDMA_CM_STATE_CLOSED;
2819 irdma_rem_ref_cm_node(cm_node);
2821 case IRDMA_CM_STATE_FIN_WAIT1:
2822 irdma_cleanup_retrans_entry(cm_node);
2823 cm_node->state = IRDMA_CM_STATE_FIN_WAIT2;
2825 case IRDMA_CM_STATE_SYN_SENT:
2826 case IRDMA_CM_STATE_FIN_WAIT2:
2827 case IRDMA_CM_STATE_OFFLOADED:
2828 case IRDMA_CM_STATE_MPAREQ_RCVD:
2829 case IRDMA_CM_STATE_UNKNOWN:
2831 irdma_cleanup_retrans_entry(cm_node);
2839 * irdma_process_pkt - process cm packet
2840 * @cm_node: connection's node
2841 * @rbuf: receive buffer
2843 static void irdma_process_pkt(struct irdma_cm_node *cm_node,
2844 struct irdma_puda_buf *rbuf)
2846 enum irdma_tcpip_pkt_type pkt_type = IRDMA_PKT_TYPE_UNKNOWN;
2847 struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
2852 pkt_type = IRDMA_PKT_TYPE_RST;
2853 } else if (tcph->syn) {
2854 pkt_type = IRDMA_PKT_TYPE_SYN;
2856 pkt_type = IRDMA_PKT_TYPE_SYNACK;
2857 } else if (tcph->ack) {
2858 pkt_type = IRDMA_PKT_TYPE_ACK;
2864 case IRDMA_PKT_TYPE_SYN:
2865 irdma_handle_syn_pkt(cm_node, rbuf);
2867 case IRDMA_PKT_TYPE_SYNACK:
2868 irdma_handle_synack_pkt(cm_node, rbuf);
2870 case IRDMA_PKT_TYPE_ACK:
2871 err = irdma_handle_ack_pkt(cm_node, rbuf);
2872 if (fin_set && !err)
2873 irdma_handle_fin_pkt(cm_node);
2875 case IRDMA_PKT_TYPE_RST:
2876 irdma_handle_rst_pkt(cm_node, rbuf);
2880 (!irdma_check_seq(cm_node, (struct tcphdr *)rbuf->tcph)))
2881 irdma_handle_fin_pkt(cm_node);
2887 * irdma_make_listen_node - create a listen node with params
2888 * @cm_core: cm's core
2889 * @iwdev: iwarp device structure
2890 * @cm_info: quad info for connection
2892 static struct irdma_cm_listener *
2893 irdma_make_listen_node(struct irdma_cm_core *cm_core,
2894 struct irdma_device *iwdev,
2895 struct irdma_cm_info *cm_info)
2897 struct irdma_cm_listener *listener;
2898 unsigned long flags;
2900 /* cannot have multiple matching listeners */
2901 listener = irdma_find_listener(cm_core, cm_info->loc_addr,
2902 cm_info->loc_port, cm_info->vlan_id,
2903 IRDMA_CM_LISTENER_EITHER_STATE);
2905 listener->listener_state == IRDMA_CM_LISTENER_ACTIVE_STATE) {
2906 refcount_dec(&listener->refcnt);
2911 /* create a CM listen node
2912 * 1/2 node to compare incoming traffic to
2914 listener = kzalloc(sizeof(*listener), GFP_KERNEL);
2917 cm_core->stats_listen_nodes_created++;
2918 memcpy(listener->loc_addr, cm_info->loc_addr,
2919 sizeof(listener->loc_addr));
2920 listener->loc_port = cm_info->loc_port;
2922 INIT_LIST_HEAD(&listener->child_listen_list);
2924 refcount_set(&listener->refcnt, 1);
2926 listener->reused_node = 1;
2929 listener->cm_id = cm_info->cm_id;
2930 listener->ipv4 = cm_info->ipv4;
2931 listener->vlan_id = cm_info->vlan_id;
2932 atomic_set(&listener->pend_accepts_cnt, 0);
2933 listener->cm_core = cm_core;
2934 listener->iwdev = iwdev;
2936 listener->backlog = cm_info->backlog;
2937 listener->listener_state = IRDMA_CM_LISTENER_ACTIVE_STATE;
2939 if (!listener->reused_node) {
2940 spin_lock_irqsave(&cm_core->listen_list_lock, flags);
2941 list_add(&listener->list, &cm_core->listen_list);
2942 spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
2949 * irdma_create_cm_node - make a connection node with params
2950 * @cm_core: cm's core
2951 * @iwdev: iwarp device structure
2952 * @conn_param: connection parameters
2953 * @cm_info: quad info for connection
2954 * @caller_cm_node: pointer to cm_node structure to return
2956 static int irdma_create_cm_node(struct irdma_cm_core *cm_core,
2957 struct irdma_device *iwdev,
2958 struct iw_cm_conn_param *conn_param,
2959 struct irdma_cm_info *cm_info,
2960 struct irdma_cm_node **caller_cm_node)
2962 struct irdma_cm_node *cm_node;
2963 u16 private_data_len = conn_param->private_data_len;
2964 const void *private_data = conn_param->private_data;
2966 /* create a CM connection node */
2967 cm_node = irdma_make_cm_node(cm_core, iwdev, cm_info, NULL);
2971 /* set our node side to client (active) side */
2972 cm_node->tcp_cntxt.client = 1;
2973 cm_node->tcp_cntxt.rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE;
2975 irdma_record_ird_ord(cm_node, conn_param->ird, conn_param->ord);
2977 cm_node->pdata.size = private_data_len;
2978 cm_node->pdata.addr = cm_node->pdata_buf;
2980 memcpy(cm_node->pdata_buf, private_data, private_data_len);
2981 *caller_cm_node = cm_node;
2987 * irdma_cm_reject - reject and teardown a connection
2988 * @cm_node: connection's node
2989 * @pdata: ptr to private data for reject
2990 * @plen: size of private data
2992 static int irdma_cm_reject(struct irdma_cm_node *cm_node, const void *pdata,
2998 if (cm_node->tcp_cntxt.client)
3001 irdma_cleanup_retrans_entry(cm_node);
3003 passive_state = atomic_add_return(1, &cm_node->passive_state);
3004 if (passive_state == IRDMA_SEND_RESET_EVENT) {
3005 cm_node->state = IRDMA_CM_STATE_CLOSED;
3006 irdma_rem_ref_cm_node(cm_node);
3010 if (cm_node->state == IRDMA_CM_STATE_LISTENER_DESTROYED) {
3011 irdma_rem_ref_cm_node(cm_node);
3015 ret = irdma_send_mpa_reject(cm_node, pdata, plen);
3019 cm_node->state = IRDMA_CM_STATE_CLOSED;
3020 if (irdma_send_reset(cm_node))
3021 ibdev_dbg(&cm_node->iwdev->ibdev,
3022 "CM: send reset failed\n");
3028 * irdma_cm_close - close of cm connection
3029 * @cm_node: connection's node
3031 static int irdma_cm_close(struct irdma_cm_node *cm_node)
3033 switch (cm_node->state) {
3034 case IRDMA_CM_STATE_SYN_RCVD:
3035 case IRDMA_CM_STATE_SYN_SENT:
3036 case IRDMA_CM_STATE_ONE_SIDE_ESTABLISHED:
3037 case IRDMA_CM_STATE_ESTABLISHED:
3038 case IRDMA_CM_STATE_ACCEPTING:
3039 case IRDMA_CM_STATE_MPAREQ_SENT:
3040 case IRDMA_CM_STATE_MPAREQ_RCVD:
3041 irdma_cleanup_retrans_entry(cm_node);
3042 irdma_send_reset(cm_node);
3044 case IRDMA_CM_STATE_CLOSE_WAIT:
3045 cm_node->state = IRDMA_CM_STATE_LAST_ACK;
3046 irdma_send_fin(cm_node);
3048 case IRDMA_CM_STATE_FIN_WAIT1:
3049 case IRDMA_CM_STATE_FIN_WAIT2:
3050 case IRDMA_CM_STATE_LAST_ACK:
3051 case IRDMA_CM_STATE_TIME_WAIT:
3052 case IRDMA_CM_STATE_CLOSING:
3054 case IRDMA_CM_STATE_LISTENING:
3055 irdma_cleanup_retrans_entry(cm_node);
3056 irdma_send_reset(cm_node);
3058 case IRDMA_CM_STATE_MPAREJ_RCVD:
3059 case IRDMA_CM_STATE_UNKNOWN:
3060 case IRDMA_CM_STATE_INITED:
3061 case IRDMA_CM_STATE_CLOSED:
3062 case IRDMA_CM_STATE_LISTENER_DESTROYED:
3063 irdma_rem_ref_cm_node(cm_node);
3065 case IRDMA_CM_STATE_OFFLOADED:
3066 if (cm_node->send_entry)
3067 ibdev_dbg(&cm_node->iwdev->ibdev,
3068 "CM: CM send_entry in OFFLOADED state\n");
3069 irdma_rem_ref_cm_node(cm_node);
3077 * irdma_receive_ilq - recv an ETHERNET packet, and process it
3079 * @vsi: VSI structure of dev
3080 * @rbuf: receive buffer
3082 void irdma_receive_ilq(struct irdma_sc_vsi *vsi, struct irdma_puda_buf *rbuf)
3084 struct irdma_cm_node *cm_node;
3085 struct irdma_cm_listener *listener;
3087 struct ipv6hdr *ip6h;
3088 struct tcphdr *tcph;
3089 struct irdma_cm_info cm_info = {};
3090 struct irdma_device *iwdev = vsi->back_vsi;
3091 struct irdma_cm_core *cm_core = &iwdev->cm_core;
3092 struct vlan_ethhdr *ethh;
3095 /* if vlan, then maclen = 18 else 14 */
3096 iph = (struct iphdr *)rbuf->iph;
3097 print_hex_dump_debug("ILQ: RECEIVE ILQ BUFFER", DUMP_PREFIX_OFFSET,
3098 16, 8, rbuf->mem.va, rbuf->totallen, false);
3099 if (iwdev->rf->sc_dev.hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
3100 if (rbuf->vlan_valid) {
3101 vtag = rbuf->vlan_id;
3102 cm_info.user_pri = (vtag & VLAN_PRIO_MASK) >>
3104 cm_info.vlan_id = vtag & VLAN_VID_MASK;
3106 cm_info.vlan_id = 0xFFFF;
3109 ethh = rbuf->mem.va;
3111 if (ethh->h_vlan_proto == htons(ETH_P_8021Q)) {
3112 vtag = ntohs(ethh->h_vlan_TCI);
3113 cm_info.user_pri = (vtag & VLAN_PRIO_MASK) >>
3115 cm_info.vlan_id = vtag & VLAN_VID_MASK;
3116 ibdev_dbg(&cm_core->iwdev->ibdev,
3117 "CM: vlan_id=%d\n", cm_info.vlan_id);
3119 cm_info.vlan_id = 0xFFFF;
3122 tcph = (struct tcphdr *)rbuf->tcph;
3125 cm_info.loc_addr[0] = ntohl(iph->daddr);
3126 cm_info.rem_addr[0] = ntohl(iph->saddr);
3127 cm_info.ipv4 = true;
3128 cm_info.tos = iph->tos;
3130 ip6h = (struct ipv6hdr *)rbuf->iph;
3131 irdma_copy_ip_ntohl(cm_info.loc_addr,
3132 ip6h->daddr.in6_u.u6_addr32);
3133 irdma_copy_ip_ntohl(cm_info.rem_addr,
3134 ip6h->saddr.in6_u.u6_addr32);
3135 cm_info.ipv4 = false;
3136 cm_info.tos = (ip6h->priority << 4) | (ip6h->flow_lbl[0] >> 4);
3138 cm_info.loc_port = ntohs(tcph->dest);
3139 cm_info.rem_port = ntohs(tcph->source);
3140 cm_node = irdma_find_node(cm_core, cm_info.rem_port, cm_info.rem_addr,
3141 cm_info.loc_port, cm_info.loc_addr, cm_info.vlan_id);
3144 /* Only type of packet accepted are for the
3145 * PASSIVE open (syn only)
3147 if (!tcph->syn || tcph->ack)
3150 listener = irdma_find_listener(cm_core,
3154 IRDMA_CM_LISTENER_ACTIVE_STATE);
3156 cm_info.cm_id = NULL;
3157 ibdev_dbg(&cm_core->iwdev->ibdev,
3158 "CM: no listener found\n");
3162 cm_info.cm_id = listener->cm_id;
3163 cm_node = irdma_make_cm_node(cm_core, iwdev, &cm_info,
3166 ibdev_dbg(&cm_core->iwdev->ibdev,
3167 "CM: allocate node failed\n");
3168 refcount_dec(&listener->refcnt);
3172 if (!tcph->rst && !tcph->fin) {
3173 cm_node->state = IRDMA_CM_STATE_LISTENING;
3175 irdma_rem_ref_cm_node(cm_node);
3179 refcount_inc(&cm_node->refcnt);
3180 } else if (cm_node->state == IRDMA_CM_STATE_OFFLOADED) {
3181 irdma_rem_ref_cm_node(cm_node);
3185 irdma_process_pkt(cm_node, rbuf);
3186 irdma_rem_ref_cm_node(cm_node);
3189 static int irdma_add_qh(struct irdma_cm_node *cm_node, bool active)
3192 irdma_add_conn_est_qh(cm_node);
3196 static void irdma_cm_free_ah_nop(struct irdma_cm_node *cm_node)
3201 * irdma_setup_cm_core - setup top level instance of a cm core
3202 * @iwdev: iwarp device structure
3203 * @rdma_ver: HW version
3205 int irdma_setup_cm_core(struct irdma_device *iwdev, u8 rdma_ver)
3207 struct irdma_cm_core *cm_core = &iwdev->cm_core;
3209 cm_core->iwdev = iwdev;
3210 cm_core->dev = &iwdev->rf->sc_dev;
3212 /* Handles CM event work items send to Iwarp core */
3213 cm_core->event_wq = alloc_ordered_workqueue("iwarp-event-wq", 0);
3214 if (!cm_core->event_wq)
3217 INIT_LIST_HEAD(&cm_core->listen_list);
3219 timer_setup(&cm_core->tcp_timer, irdma_cm_timer_tick, 0);
3221 spin_lock_init(&cm_core->ht_lock);
3222 spin_lock_init(&cm_core->listen_list_lock);
3223 spin_lock_init(&cm_core->apbvt_lock);
3226 cm_core->form_cm_frame = irdma_form_uda_cm_frame;
3227 cm_core->cm_create_ah = irdma_add_qh;
3228 cm_core->cm_free_ah = irdma_cm_free_ah_nop;
3232 cm_core->form_cm_frame = irdma_form_ah_cm_frame;
3233 cm_core->cm_create_ah = irdma_cm_create_ah;
3234 cm_core->cm_free_ah = irdma_cm_free_ah;
3241 * irdma_cleanup_cm_core - deallocate a top level instance of a
3243 * @cm_core: cm's core
3245 void irdma_cleanup_cm_core(struct irdma_cm_core *cm_core)
3250 del_timer_sync(&cm_core->tcp_timer);
3252 destroy_workqueue(cm_core->event_wq);
3253 cm_core->dev->ws_reset(&cm_core->iwdev->vsi);
3257 * irdma_init_tcp_ctx - setup qp context
3258 * @cm_node: connection's node
3259 * @tcp_info: offload info for tcp
3260 * @iwqp: associate qp for the connection
3262 static void irdma_init_tcp_ctx(struct irdma_cm_node *cm_node,
3263 struct irdma_tcp_offload_info *tcp_info,
3264 struct irdma_qp *iwqp)
3266 tcp_info->ipv4 = cm_node->ipv4;
3267 tcp_info->drop_ooo_seg = !iwqp->iwdev->iw_ooo;
3268 tcp_info->wscale = true;
3269 tcp_info->ignore_tcp_opt = true;
3270 tcp_info->ignore_tcp_uns_opt = true;
3271 tcp_info->no_nagle = false;
3273 tcp_info->ttl = IRDMA_DEFAULT_TTL;
3274 tcp_info->rtt_var = IRDMA_DEFAULT_RTT_VAR;
3275 tcp_info->ss_thresh = IRDMA_DEFAULT_SS_THRESH;
3276 tcp_info->rexmit_thresh = IRDMA_DEFAULT_REXMIT_THRESH;
3278 tcp_info->tcp_state = IRDMA_TCP_STATE_ESTABLISHED;
3279 tcp_info->snd_wscale = cm_node->tcp_cntxt.snd_wscale;
3280 tcp_info->rcv_wscale = cm_node->tcp_cntxt.rcv_wscale;
3282 tcp_info->snd_nxt = cm_node->tcp_cntxt.loc_seq_num;
3283 tcp_info->snd_wnd = cm_node->tcp_cntxt.snd_wnd;
3284 tcp_info->rcv_nxt = cm_node->tcp_cntxt.rcv_nxt;
3285 tcp_info->snd_max = cm_node->tcp_cntxt.loc_seq_num;
3287 tcp_info->snd_una = cm_node->tcp_cntxt.loc_seq_num;
3288 tcp_info->cwnd = 2 * cm_node->tcp_cntxt.mss;
3289 tcp_info->snd_wl1 = cm_node->tcp_cntxt.rcv_nxt;
3290 tcp_info->snd_wl2 = cm_node->tcp_cntxt.loc_seq_num;
3291 tcp_info->max_snd_window = cm_node->tcp_cntxt.max_snd_wnd;
3292 tcp_info->rcv_wnd = cm_node->tcp_cntxt.rcv_wnd
3293 << cm_node->tcp_cntxt.rcv_wscale;
3295 tcp_info->flow_label = 0;
3296 tcp_info->snd_mss = (u32)cm_node->tcp_cntxt.mss;
3297 tcp_info->tos = cm_node->tos;
3298 if (cm_node->vlan_id < VLAN_N_VID) {
3299 tcp_info->insert_vlan_tag = true;
3300 tcp_info->vlan_tag = cm_node->vlan_id;
3301 tcp_info->vlan_tag |= cm_node->user_pri << VLAN_PRIO_SHIFT;
3303 if (cm_node->ipv4) {
3304 tcp_info->src_port = cm_node->loc_port;
3305 tcp_info->dst_port = cm_node->rem_port;
3307 tcp_info->dest_ip_addr[3] = cm_node->rem_addr[0];
3308 tcp_info->local_ipaddr[3] = cm_node->loc_addr[0];
3309 tcp_info->arp_idx = (u16)irdma_arp_table(iwqp->iwdev->rf,
3310 &tcp_info->dest_ip_addr[3],
3314 tcp_info->src_port = cm_node->loc_port;
3315 tcp_info->dst_port = cm_node->rem_port;
3316 memcpy(tcp_info->dest_ip_addr, cm_node->rem_addr,
3317 sizeof(tcp_info->dest_ip_addr));
3318 memcpy(tcp_info->local_ipaddr, cm_node->loc_addr,
3319 sizeof(tcp_info->local_ipaddr));
3321 tcp_info->arp_idx = (u16)irdma_arp_table(iwqp->iwdev->rf,
3322 &tcp_info->dest_ip_addr[0],
3329 * irdma_cm_init_tsa_conn - setup qp for RTS
3330 * @iwqp: associate qp for the connection
3331 * @cm_node: connection's node
3333 static void irdma_cm_init_tsa_conn(struct irdma_qp *iwqp,
3334 struct irdma_cm_node *cm_node)
3336 struct irdma_iwarp_offload_info *iwarp_info;
3337 struct irdma_qp_host_ctx_info *ctx_info;
3339 iwarp_info = &iwqp->iwarp_info;
3340 ctx_info = &iwqp->ctx_info;
3342 ctx_info->tcp_info = &iwqp->tcp_info;
3343 ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
3344 ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
3346 iwarp_info->ord_size = cm_node->ord_size;
3347 iwarp_info->ird_size = cm_node->ird_size;
3348 iwarp_info->rd_en = true;
3349 iwarp_info->rdmap_ver = 1;
3350 iwarp_info->ddp_ver = 1;
3351 iwarp_info->pd_id = iwqp->iwpd->sc_pd.pd_id;
3353 ctx_info->tcp_info_valid = true;
3354 ctx_info->iwarp_info_valid = true;
3355 ctx_info->user_pri = cm_node->user_pri;
3357 irdma_init_tcp_ctx(cm_node, &iwqp->tcp_info, iwqp);
3358 if (cm_node->snd_mark_en) {
3359 iwarp_info->snd_mark_en = true;
3360 iwarp_info->snd_mark_offset = (iwqp->tcp_info.snd_nxt & SNDMARKER_SEQNMASK) +
3364 cm_node->state = IRDMA_CM_STATE_OFFLOADED;
3365 iwqp->tcp_info.tcp_state = IRDMA_TCP_STATE_ESTABLISHED;
3366 iwqp->tcp_info.src_mac_addr_idx = iwqp->iwdev->mac_ip_table_idx;
3368 if (cm_node->rcv_mark_en) {
3369 iwarp_info->rcv_mark_en = true;
3370 iwarp_info->align_hdrs = true;
3373 irdma_sc_qp_setctx(&iwqp->sc_qp, iwqp->host_ctx.va, ctx_info);
3375 /* once tcp_info is set, no need to do it again */
3376 ctx_info->tcp_info_valid = false;
3377 ctx_info->iwarp_info_valid = false;
3381 * irdma_cm_disconn - when a connection is being closed
3382 * @iwqp: associated qp for the connection
3384 void irdma_cm_disconn(struct irdma_qp *iwqp)
3386 struct irdma_device *iwdev = iwqp->iwdev;
3387 struct disconn_work *work;
3388 unsigned long flags;
3390 work = kzalloc(sizeof(*work), GFP_ATOMIC);
3394 spin_lock_irqsave(&iwdev->rf->qptable_lock, flags);
3395 if (!iwdev->rf->qp_table[iwqp->ibqp.qp_num]) {
3396 spin_unlock_irqrestore(&iwdev->rf->qptable_lock, flags);
3397 ibdev_dbg(&iwdev->ibdev,
3398 "CM: qp_id %d is already freed\n",
3403 irdma_qp_add_ref(&iwqp->ibqp);
3404 spin_unlock_irqrestore(&iwdev->rf->qptable_lock, flags);
3407 INIT_WORK(&work->work, irdma_disconnect_worker);
3408 queue_work(iwdev->cleanup_wq, &work->work);
3412 * irdma_qp_disconnect - free qp and close cm
3413 * @iwqp: associate qp for the connection
3415 static void irdma_qp_disconnect(struct irdma_qp *iwqp)
3417 struct irdma_device *iwdev = iwqp->iwdev;
3419 iwqp->active_conn = 0;
3420 /* close the CM node down if it is still active */
3421 ibdev_dbg(&iwdev->ibdev, "CM: Call close API\n");
3422 irdma_cm_close(iwqp->cm_node);
3426 * irdma_cm_disconn_true - called by worker thread to disconnect qp
3427 * @iwqp: associate qp for the connection
3429 static void irdma_cm_disconn_true(struct irdma_qp *iwqp)
3431 struct iw_cm_id *cm_id;
3432 struct irdma_device *iwdev;
3433 struct irdma_sc_qp *qp = &iwqp->sc_qp;
3435 u8 original_hw_tcp_state;
3436 u8 original_ibqp_state;
3437 int disconn_status = 0;
3438 int issue_disconn = 0;
3439 int issue_close = 0;
3440 int issue_flush = 0;
3441 unsigned long flags;
3444 iwdev = iwqp->iwdev;
3445 spin_lock_irqsave(&iwqp->lock, flags);
3446 if (rdma_protocol_roce(&iwdev->ibdev, 1)) {
3447 struct ib_qp_attr attr;
3449 if (iwqp->flush_issued || iwqp->sc_qp.qp_uk.destroy_pending) {
3450 spin_unlock_irqrestore(&iwqp->lock, flags);
3454 spin_unlock_irqrestore(&iwqp->lock, flags);
3456 attr.qp_state = IB_QPS_ERR;
3457 irdma_modify_qp_roce(&iwqp->ibqp, &attr, IB_QP_STATE, NULL);
3458 irdma_ib_qp_event(iwqp, qp->event_type);
3462 cm_id = iwqp->cm_id;
3463 original_hw_tcp_state = iwqp->hw_tcp_state;
3464 original_ibqp_state = iwqp->ibqp_state;
3465 last_ae = iwqp->last_aeq;
3467 if (qp->term_flags) {
3471 irdma_terminate_del_timer(qp);
3472 if (!iwqp->flush_issued) {
3473 iwqp->flush_issued = 1;
3476 } else if ((original_hw_tcp_state == IRDMA_TCP_STATE_CLOSE_WAIT) ||
3477 ((original_ibqp_state == IB_QPS_RTS) &&
3478 (last_ae == IRDMA_AE_LLP_CONNECTION_RESET))) {
3480 if (last_ae == IRDMA_AE_LLP_CONNECTION_RESET)
3481 disconn_status = -ECONNRESET;
3484 if (original_hw_tcp_state == IRDMA_TCP_STATE_CLOSED ||
3485 original_hw_tcp_state == IRDMA_TCP_STATE_TIME_WAIT ||
3486 last_ae == IRDMA_AE_RDMAP_ROE_BAD_LLP_CLOSE ||
3487 last_ae == IRDMA_AE_BAD_CLOSE ||
3488 last_ae == IRDMA_AE_LLP_CONNECTION_RESET || iwdev->rf->reset || !cm_id) {
3492 if (!iwqp->flush_issued) {
3493 iwqp->flush_issued = 1;
3498 spin_unlock_irqrestore(&iwqp->lock, flags);
3499 if (issue_flush && !iwqp->sc_qp.qp_uk.destroy_pending) {
3500 irdma_flush_wqes(iwqp, IRDMA_FLUSH_SQ | IRDMA_FLUSH_RQ |
3504 irdma_ib_qp_event(iwqp, qp->event_type);
3507 if (!cm_id || !cm_id->event_handler)
3510 spin_lock_irqsave(&iwdev->cm_core.ht_lock, flags);
3511 if (!iwqp->cm_node) {
3512 spin_unlock_irqrestore(&iwdev->cm_core.ht_lock, flags);
3515 refcount_inc(&iwqp->cm_node->refcnt);
3517 spin_unlock_irqrestore(&iwdev->cm_core.ht_lock, flags);
3519 if (issue_disconn) {
3520 err = irdma_send_cm_event(iwqp->cm_node, cm_id,
3521 IW_CM_EVENT_DISCONNECT,
3524 ibdev_dbg(&iwdev->ibdev,
3525 "CM: disconnect event failed: - cm_id = %p\n",
3529 cm_id->provider_data = iwqp;
3530 err = irdma_send_cm_event(iwqp->cm_node, cm_id,
3531 IW_CM_EVENT_CLOSE, 0);
3533 ibdev_dbg(&iwdev->ibdev,
3534 "CM: close event failed: - cm_id = %p\n",
3536 irdma_qp_disconnect(iwqp);
3538 irdma_rem_ref_cm_node(iwqp->cm_node);
3542 * irdma_disconnect_worker - worker for connection close
3543 * @work: points or disconn structure
3545 static void irdma_disconnect_worker(struct work_struct *work)
3547 struct disconn_work *dwork = container_of(work, struct disconn_work, work);
3548 struct irdma_qp *iwqp = dwork->iwqp;
3551 irdma_cm_disconn_true(iwqp);
3552 irdma_qp_rem_ref(&iwqp->ibqp);
3556 * irdma_free_lsmm_rsrc - free lsmm memory and deregister
3557 * @iwqp: associate qp for the connection
3559 void irdma_free_lsmm_rsrc(struct irdma_qp *iwqp)
3561 struct irdma_device *iwdev;
3563 iwdev = iwqp->iwdev;
3565 if (iwqp->ietf_mem.va) {
3567 iwdev->ibdev.ops.dereg_mr(iwqp->lsmm_mr, NULL);
3568 dma_free_coherent(iwdev->rf->sc_dev.hw->device,
3569 iwqp->ietf_mem.size, iwqp->ietf_mem.va,
3571 iwqp->ietf_mem.va = NULL;
3572 iwqp->ietf_mem.va = NULL;
3577 * irdma_accept - registered call for connection to be accepted
3578 * @cm_id: cm information for passive connection
3579 * @conn_param: accpet parameters
3581 int irdma_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
3584 struct irdma_qp *iwqp;
3585 struct irdma_device *iwdev;
3586 struct irdma_sc_dev *dev;
3587 struct irdma_cm_node *cm_node;
3588 struct ib_qp_attr attr = {};
3591 struct irdma_pd *iwpd;
3593 struct irdma_kmem_info accept;
3598 ibqp = irdma_get_qp(cm_id->device, conn_param->qpn);
3602 iwqp = to_iwqp(ibqp);
3603 iwdev = iwqp->iwdev;
3604 dev = &iwdev->rf->sc_dev;
3605 cm_node = cm_id->provider_data;
3607 if (((struct sockaddr_in *)&cm_id->local_addr)->sin_family == AF_INET) {
3608 cm_node->ipv4 = true;
3609 cm_node->vlan_id = irdma_get_vlan_ipv4(cm_node->loc_addr);
3611 cm_node->ipv4 = false;
3612 irdma_netdev_vlan_ipv6(cm_node->loc_addr, &cm_node->vlan_id,
3615 ibdev_dbg(&iwdev->ibdev, "CM: Accept vlan_id=%d\n",
3618 trace_irdma_accept(cm_node, 0, NULL);
3620 if (cm_node->state == IRDMA_CM_STATE_LISTENER_DESTROYED) {
3625 passive_state = atomic_add_return(1, &cm_node->passive_state);
3626 if (passive_state == IRDMA_SEND_RESET_EVENT) {
3631 buf_len = conn_param->private_data_len + IRDMA_MAX_IETF_SIZE;
3632 iwqp->ietf_mem.size = ALIGN(buf_len, 1);
3633 iwqp->ietf_mem.va = dma_alloc_coherent(dev->hw->device,
3634 iwqp->ietf_mem.size,
3635 &iwqp->ietf_mem.pa, GFP_KERNEL);
3636 if (!iwqp->ietf_mem.va) {
3641 cm_node->pdata.size = conn_param->private_data_len;
3642 accept.addr = iwqp->ietf_mem.va;
3643 accept.size = irdma_cm_build_mpa_frame(cm_node, &accept, MPA_KEY_REPLY);
3644 memcpy((u8 *)accept.addr + accept.size, conn_param->private_data,
3645 conn_param->private_data_len);
3647 if (cm_node->dev->ws_add(iwqp->sc_qp.vsi, cm_node->user_pri)) {
3651 iwqp->sc_qp.user_pri = cm_node->user_pri;
3652 irdma_qp_add_qos(&iwqp->sc_qp);
3653 /* setup our first outgoing iWarp send WQE (the IETF frame response) */
3655 tagged_offset = (uintptr_t)iwqp->ietf_mem.va;
3656 ibmr = irdma_reg_phys_mr(&iwpd->ibpd, iwqp->ietf_mem.pa, buf_len,
3657 IB_ACCESS_LOCAL_WRITE, &tagged_offset);
3663 ibmr->pd = &iwpd->ibpd;
3664 ibmr->device = iwpd->ibpd.device;
3665 iwqp->lsmm_mr = ibmr;
3667 iwqp->sc_qp.qp_uk.sq_base = kmap_local_page(iwqp->page);
3669 cm_node->lsmm_size = accept.size + conn_param->private_data_len;
3670 irdma_sc_send_lsmm(&iwqp->sc_qp, iwqp->ietf_mem.va, cm_node->lsmm_size,
3674 kunmap_local(iwqp->sc_qp.qp_uk.sq_base);
3676 iwqp->cm_id = cm_id;
3677 cm_node->cm_id = cm_id;
3679 cm_id->provider_data = iwqp;
3680 iwqp->active_conn = 0;
3681 iwqp->cm_node = cm_node;
3682 cm_node->iwqp = iwqp;
3683 irdma_cm_init_tsa_conn(iwqp, cm_node);
3684 irdma_qp_add_ref(&iwqp->ibqp);
3685 cm_id->add_ref(cm_id);
3687 attr.qp_state = IB_QPS_RTS;
3688 cm_node->qhash_set = false;
3689 cm_node->cm_core->cm_free_ah(cm_node);
3691 irdma_modify_qp(&iwqp->ibqp, &attr, IB_QP_STATE, NULL);
3692 if (dev->hw_attrs.uk_attrs.feature_flags & IRDMA_FEATURE_RTS_AE) {
3693 wait_ret = wait_event_interruptible_timeout(iwqp->waitq,
3697 ibdev_dbg(&iwdev->ibdev,
3698 "CM: Slow Connection: cm_node=%p, loc_port=%d, rem_port=%d, cm_id=%p\n",
3699 cm_node, cm_node->loc_port,
3700 cm_node->rem_port, cm_node->cm_id);
3706 irdma_send_cm_event(cm_node, cm_id, IW_CM_EVENT_ESTABLISHED, 0);
3707 cm_node->accelerated = true;
3708 complete(&cm_node->establish_comp);
3710 if (cm_node->accept_pend) {
3711 atomic_dec(&cm_node->listener->pend_accepts_cnt);
3712 cm_node->accept_pend = 0;
3715 ibdev_dbg(&iwdev->ibdev,
3716 "CM: 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",
3717 cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr,
3718 cm_node->loc_addr, cm_node, cm_id, ibqp->qp_num);
3719 cm_node->cm_core->stats_accepts++;
3723 irdma_free_lsmm_rsrc(iwqp);
3724 irdma_rem_ref_cm_node(cm_node);
3730 * irdma_reject - registered call for connection to be rejected
3731 * @cm_id: cm information for passive connection
3732 * @pdata: private data to be sent
3733 * @pdata_len: private data length
3735 int irdma_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
3737 struct irdma_device *iwdev;
3738 struct irdma_cm_node *cm_node;
3740 cm_node = cm_id->provider_data;
3741 cm_node->pdata.size = pdata_len;
3743 trace_irdma_reject(cm_node, 0, NULL);
3745 iwdev = to_iwdev(cm_id->device);
3749 cm_node->cm_core->stats_rejects++;
3751 if (pdata_len + sizeof(struct ietf_mpa_v2) > IRDMA_MAX_CM_BUF)
3754 return irdma_cm_reject(cm_node, pdata, pdata_len);
3758 * irdma_connect - registered call for connection to be established
3759 * @cm_id: cm information for passive connection
3760 * @conn_param: Information about the connection
3762 int irdma_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
3765 struct irdma_qp *iwqp;
3766 struct irdma_device *iwdev;
3767 struct irdma_cm_node *cm_node;
3768 struct irdma_cm_info cm_info;
3769 struct sockaddr_in *laddr;
3770 struct sockaddr_in *raddr;
3771 struct sockaddr_in6 *laddr6;
3772 struct sockaddr_in6 *raddr6;
3775 ibqp = irdma_get_qp(cm_id->device, conn_param->qpn);
3778 iwqp = to_iwqp(ibqp);
3781 iwdev = iwqp->iwdev;
3785 laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
3786 raddr = (struct sockaddr_in *)&cm_id->m_remote_addr;
3787 laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
3788 raddr6 = (struct sockaddr_in6 *)&cm_id->m_remote_addr;
3790 if (!(laddr->sin_port) || !(raddr->sin_port))
3793 iwqp->active_conn = 1;
3795 cm_id->provider_data = iwqp;
3797 /* set up the connection params for the node */
3798 if (cm_id->remote_addr.ss_family == AF_INET) {
3799 if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV4)
3802 cm_info.ipv4 = true;
3803 memset(cm_info.loc_addr, 0, sizeof(cm_info.loc_addr));
3804 memset(cm_info.rem_addr, 0, sizeof(cm_info.rem_addr));
3805 cm_info.loc_addr[0] = ntohl(laddr->sin_addr.s_addr);
3806 cm_info.rem_addr[0] = ntohl(raddr->sin_addr.s_addr);
3807 cm_info.loc_port = ntohs(laddr->sin_port);
3808 cm_info.rem_port = ntohs(raddr->sin_port);
3809 cm_info.vlan_id = irdma_get_vlan_ipv4(cm_info.loc_addr);
3811 if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV6)
3814 cm_info.ipv4 = false;
3815 irdma_copy_ip_ntohl(cm_info.loc_addr,
3816 laddr6->sin6_addr.in6_u.u6_addr32);
3817 irdma_copy_ip_ntohl(cm_info.rem_addr,
3818 raddr6->sin6_addr.in6_u.u6_addr32);
3819 cm_info.loc_port = ntohs(laddr6->sin6_port);
3820 cm_info.rem_port = ntohs(raddr6->sin6_port);
3821 irdma_netdev_vlan_ipv6(cm_info.loc_addr, &cm_info.vlan_id,
3824 cm_info.cm_id = cm_id;
3825 cm_info.qh_qpid = iwdev->vsi.ilq->qp_id;
3826 cm_info.tos = cm_id->tos;
3827 if (iwdev->vsi.dscp_mode)
3829 iwqp->sc_qp.vsi->dscp_map[irdma_tos2dscp(cm_info.tos)];
3831 cm_info.user_pri = rt_tos2priority(cm_id->tos);
3833 if (iwqp->sc_qp.dev->ws_add(iwqp->sc_qp.vsi, cm_info.user_pri))
3835 iwqp->sc_qp.user_pri = cm_info.user_pri;
3836 irdma_qp_add_qos(&iwqp->sc_qp);
3837 ibdev_dbg(&iwdev->ibdev, "DCB: TOS:[%d] UP:[%d]\n", cm_id->tos,
3840 trace_irdma_dcb_tos(iwdev, cm_id->tos, cm_info.user_pri);
3842 ret = irdma_create_cm_node(&iwdev->cm_core, iwdev, conn_param, &cm_info,
3846 ret = cm_node->cm_core->cm_create_ah(cm_node, true);
3849 if (irdma_manage_qhash(iwdev, &cm_info,
3850 IRDMA_QHASH_TYPE_TCP_ESTABLISHED,
3851 IRDMA_QHASH_MANAGE_TYPE_ADD, NULL, true)) {
3855 cm_node->qhash_set = true;
3857 cm_node->apbvt_entry = irdma_add_apbvt(iwdev, cm_info.loc_port);
3858 if (!cm_node->apbvt_entry) {
3863 cm_node->apbvt_set = true;
3864 iwqp->cm_node = cm_node;
3865 cm_node->iwqp = iwqp;
3866 iwqp->cm_id = cm_id;
3867 irdma_qp_add_ref(&iwqp->ibqp);
3868 cm_id->add_ref(cm_id);
3870 if (cm_node->state != IRDMA_CM_STATE_OFFLOADED) {
3871 cm_node->state = IRDMA_CM_STATE_SYN_SENT;
3872 ret = irdma_send_syn(cm_node, 0);
3877 ibdev_dbg(&iwdev->ibdev,
3878 "CM: 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",
3879 cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr,
3880 cm_node->loc_addr, cm_node, cm_id, ibqp->qp_num);
3882 trace_irdma_connect(cm_node, 0, NULL);
3888 ibdev_dbg(&iwdev->ibdev,
3889 "CM: connect() FAILED: dest addr=%pI4",
3892 ibdev_dbg(&iwdev->ibdev,
3893 "CM: connect() FAILED: dest addr=%pI6",
3895 irdma_rem_ref_cm_node(cm_node);
3896 iwdev->cm_core.stats_connect_errs++;
3902 * irdma_create_listen - registered call creating listener
3903 * @cm_id: cm information for passive connection
3904 * @backlog: to max accept pending count
3906 int irdma_create_listen(struct iw_cm_id *cm_id, int backlog)
3908 struct irdma_device *iwdev;
3909 struct irdma_cm_listener *cm_listen_node;
3910 struct irdma_cm_info cm_info = {};
3911 struct sockaddr_in *laddr;
3912 struct sockaddr_in6 *laddr6;
3913 bool wildcard = false;
3916 iwdev = to_iwdev(cm_id->device);
3920 laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
3921 laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
3922 cm_info.qh_qpid = iwdev->vsi.ilq->qp_id;
3924 if (laddr->sin_family == AF_INET) {
3925 if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV4)
3928 cm_info.ipv4 = true;
3929 cm_info.loc_addr[0] = ntohl(laddr->sin_addr.s_addr);
3930 cm_info.loc_port = ntohs(laddr->sin_port);
3932 if (laddr->sin_addr.s_addr != htonl(INADDR_ANY)) {
3933 cm_info.vlan_id = irdma_get_vlan_ipv4(cm_info.loc_addr);
3935 cm_info.vlan_id = 0xFFFF;
3939 if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV6)
3942 cm_info.ipv4 = false;
3943 irdma_copy_ip_ntohl(cm_info.loc_addr,
3944 laddr6->sin6_addr.in6_u.u6_addr32);
3945 cm_info.loc_port = ntohs(laddr6->sin6_port);
3946 if (ipv6_addr_type(&laddr6->sin6_addr) != IPV6_ADDR_ANY) {
3947 irdma_netdev_vlan_ipv6(cm_info.loc_addr,
3948 &cm_info.vlan_id, NULL);
3950 cm_info.vlan_id = 0xFFFF;
3955 if (cm_info.vlan_id >= VLAN_N_VID && iwdev->dcb_vlan_mode)
3956 cm_info.vlan_id = 0;
3957 cm_info.backlog = backlog;
3958 cm_info.cm_id = cm_id;
3960 trace_irdma_create_listen(iwdev, &cm_info);
3962 cm_listen_node = irdma_make_listen_node(&iwdev->cm_core, iwdev,
3964 if (!cm_listen_node) {
3965 ibdev_dbg(&iwdev->ibdev,
3966 "CM: cm_listen_node == NULL\n");
3970 cm_id->provider_data = cm_listen_node;
3972 cm_listen_node->tos = cm_id->tos;
3973 if (iwdev->vsi.dscp_mode)
3974 cm_listen_node->user_pri =
3975 iwdev->vsi.dscp_map[irdma_tos2dscp(cm_id->tos)];
3977 cm_listen_node->user_pri = rt_tos2priority(cm_id->tos);
3978 cm_info.user_pri = cm_listen_node->user_pri;
3979 if (!cm_listen_node->reused_node) {
3981 err = irdma_add_mqh(iwdev, &cm_info, cm_listen_node);
3985 err = irdma_manage_qhash(iwdev, &cm_info,
3986 IRDMA_QHASH_TYPE_TCP_SYN,
3987 IRDMA_QHASH_MANAGE_TYPE_ADD,
3992 cm_listen_node->qhash_set = true;
3995 cm_listen_node->apbvt_entry = irdma_add_apbvt(iwdev,
3997 if (!cm_listen_node->apbvt_entry)
4000 cm_id->add_ref(cm_id);
4001 cm_listen_node->cm_core->stats_listen_created++;
4002 ibdev_dbg(&iwdev->ibdev,
4003 "CM: loc_port=0x%04x loc_addr=%pI4 cm_listen_node=%p cm_id=%p qhash_set=%d vlan_id=%d\n",
4004 cm_listen_node->loc_port, cm_listen_node->loc_addr,
4005 cm_listen_node, cm_listen_node->cm_id,
4006 cm_listen_node->qhash_set, cm_listen_node->vlan_id);
4012 irdma_cm_del_listen(&iwdev->cm_core, cm_listen_node, false);
4018 * irdma_destroy_listen - registered call to destroy listener
4019 * @cm_id: cm information for passive connection
4021 int irdma_destroy_listen(struct iw_cm_id *cm_id)
4023 struct irdma_device *iwdev;
4025 iwdev = to_iwdev(cm_id->device);
4026 if (cm_id->provider_data)
4027 irdma_cm_del_listen(&iwdev->cm_core, cm_id->provider_data,
4030 ibdev_dbg(&iwdev->ibdev,
4031 "CM: cm_id->provider_data was NULL\n");
4033 cm_id->rem_ref(cm_id);
4039 * irdma_teardown_list_prep - add conn nodes slated for tear down to list
4040 * @cm_core: cm's core
4041 * @teardown_list: a list to which cm_node will be selected
4042 * @ipaddr: pointer to ip address
4043 * @nfo: pointer to cm_info structure instance
4044 * @disconnect_all: flag indicating disconnect all QPs
4046 static void irdma_teardown_list_prep(struct irdma_cm_core *cm_core,
4047 struct list_head *teardown_list,
4049 struct irdma_cm_info *nfo,
4050 bool disconnect_all)
4052 struct irdma_cm_node *cm_node;
4055 hash_for_each_rcu(cm_core->cm_hash_tbl, bkt, cm_node, list) {
4056 if ((disconnect_all ||
4057 (nfo->vlan_id == cm_node->vlan_id &&
4058 !memcmp(cm_node->loc_addr, ipaddr, nfo->ipv4 ? 4 : 16))) &&
4059 refcount_inc_not_zero(&cm_node->refcnt))
4060 list_add(&cm_node->teardown_entry, teardown_list);
4065 * irdma_cm_event_connected - handle connected active node
4066 * @event: the info for cm_node of connection
4068 static void irdma_cm_event_connected(struct irdma_cm_event *event)
4070 struct irdma_qp *iwqp;
4071 struct irdma_device *iwdev;
4072 struct irdma_cm_node *cm_node;
4073 struct irdma_sc_dev *dev;
4074 struct ib_qp_attr attr = {};
4075 struct iw_cm_id *cm_id;
4080 cm_node = event->cm_node;
4081 cm_id = cm_node->cm_id;
4082 iwqp = cm_id->provider_data;
4083 iwdev = iwqp->iwdev;
4084 dev = &iwdev->rf->sc_dev;
4085 if (iwqp->sc_qp.qp_uk.destroy_pending) {
4086 status = -ETIMEDOUT;
4090 irdma_cm_init_tsa_conn(iwqp, cm_node);
4091 read0 = (cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO);
4093 iwqp->sc_qp.qp_uk.sq_base = kmap_local_page(iwqp->page);
4094 irdma_sc_send_rtt(&iwqp->sc_qp, read0);
4096 kunmap_local(iwqp->sc_qp.qp_uk.sq_base);
4098 attr.qp_state = IB_QPS_RTS;
4099 cm_node->qhash_set = false;
4100 irdma_modify_qp(&iwqp->ibqp, &attr, IB_QP_STATE, NULL);
4101 if (dev->hw_attrs.uk_attrs.feature_flags & IRDMA_FEATURE_RTS_AE) {
4102 wait_ret = wait_event_interruptible_timeout(iwqp->waitq,
4106 ibdev_dbg(&iwdev->ibdev,
4107 "CM: Slow Connection: cm_node=%p, loc_port=%d, rem_port=%d, cm_id=%p\n",
4108 cm_node, cm_node->loc_port,
4109 cm_node->rem_port, cm_node->cm_id);
4112 irdma_send_cm_event(cm_node, cm_id, IW_CM_EVENT_CONNECT_REPLY, 0);
4113 cm_node->accelerated = true;
4114 complete(&cm_node->establish_comp);
4115 cm_node->cm_core->cm_free_ah(cm_node);
4120 cm_id->provider_data = NULL;
4121 irdma_send_cm_event(event->cm_node, cm_id, IW_CM_EVENT_CONNECT_REPLY,
4123 irdma_rem_ref_cm_node(event->cm_node);
4127 * irdma_cm_event_reset - handle reset
4128 * @event: the info for cm_node of connection
4130 static void irdma_cm_event_reset(struct irdma_cm_event *event)
4132 struct irdma_cm_node *cm_node = event->cm_node;
4133 struct iw_cm_id *cm_id = cm_node->cm_id;
4134 struct irdma_qp *iwqp;
4139 iwqp = cm_id->provider_data;
4143 ibdev_dbg(&cm_node->iwdev->ibdev,
4144 "CM: reset event %p - cm_id = %p\n", event->cm_node, cm_id);
4147 irdma_send_cm_event(cm_node, cm_node->cm_id, IW_CM_EVENT_DISCONNECT,
4149 irdma_send_cm_event(cm_node, cm_node->cm_id, IW_CM_EVENT_CLOSE, 0);
4153 * irdma_cm_event_handler - send event to cm upper layer
4154 * @work: pointer of cm event info.
4156 static void irdma_cm_event_handler(struct work_struct *work)
4158 struct irdma_cm_event *event = container_of(work, struct irdma_cm_event, event_work);
4159 struct irdma_cm_node *cm_node;
4161 if (!event || !event->cm_node || !event->cm_node->cm_core)
4164 cm_node = event->cm_node;
4165 trace_irdma_cm_event_handler(cm_node, event->type, NULL);
4167 switch (event->type) {
4168 case IRDMA_CM_EVENT_MPA_REQ:
4169 irdma_send_cm_event(cm_node, cm_node->cm_id,
4170 IW_CM_EVENT_CONNECT_REQUEST, 0);
4172 case IRDMA_CM_EVENT_RESET:
4173 irdma_cm_event_reset(event);
4175 case IRDMA_CM_EVENT_CONNECTED:
4176 if (!event->cm_node->cm_id ||
4177 event->cm_node->state != IRDMA_CM_STATE_OFFLOADED)
4179 irdma_cm_event_connected(event);
4181 case IRDMA_CM_EVENT_MPA_REJECT:
4182 if (!event->cm_node->cm_id ||
4183 cm_node->state == IRDMA_CM_STATE_OFFLOADED)
4185 irdma_send_cm_event(cm_node, cm_node->cm_id,
4186 IW_CM_EVENT_CONNECT_REPLY, -ECONNREFUSED);
4188 case IRDMA_CM_EVENT_ABORTED:
4189 if (!event->cm_node->cm_id ||
4190 event->cm_node->state == IRDMA_CM_STATE_OFFLOADED)
4192 irdma_event_connect_error(event);
4195 ibdev_dbg(&cm_node->iwdev->ibdev,
4196 "CM: bad event type = %d\n", event->type);
4200 irdma_rem_ref_cm_node(event->cm_node);
4205 * irdma_cm_post_event - queue event request for worker thread
4206 * @event: cm node's info for up event call
4208 static void irdma_cm_post_event(struct irdma_cm_event *event)
4210 refcount_inc(&event->cm_node->refcnt);
4211 INIT_WORK(&event->event_work, irdma_cm_event_handler);
4212 queue_work(event->cm_node->cm_core->event_wq, &event->event_work);
4216 * irdma_cm_teardown_connections - teardown QPs
4217 * @iwdev: device pointer
4218 * @ipaddr: Pointer to IPv4 or IPv6 address
4219 * @nfo: Connection info
4220 * @disconnect_all: flag indicating disconnect all QPs
4222 * teardown QPs where source or destination addr matches ip addr
4224 void irdma_cm_teardown_connections(struct irdma_device *iwdev, u32 *ipaddr,
4225 struct irdma_cm_info *nfo,
4226 bool disconnect_all)
4228 struct irdma_cm_core *cm_core = &iwdev->cm_core;
4229 struct list_head *list_core_temp;
4230 struct list_head *list_node;
4231 struct irdma_cm_node *cm_node;
4232 struct list_head teardown_list;
4233 struct ib_qp_attr attr;
4235 INIT_LIST_HEAD(&teardown_list);
4238 irdma_teardown_list_prep(cm_core, &teardown_list, ipaddr, nfo, disconnect_all);
4241 list_for_each_safe (list_node, list_core_temp, &teardown_list) {
4242 cm_node = container_of(list_node, struct irdma_cm_node,
4244 attr.qp_state = IB_QPS_ERR;
4245 irdma_modify_qp(&cm_node->iwqp->ibqp, &attr, IB_QP_STATE, NULL);
4246 if (iwdev->rf->reset)
4247 irdma_cm_disconn(cm_node->iwqp);
4248 irdma_rem_ref_cm_node(cm_node);
4253 * irdma_qhash_ctrl - enable/disable qhash for list
4254 * @iwdev: device pointer
4255 * @parent_listen_node: parent listen node
4256 * @nfo: cm info node
4257 * @ipaddr: Pointer to IPv4 or IPv6 address
4258 * @ipv4: flag indicating IPv4 when true
4259 * @ifup: flag indicating interface up when true
4261 * Enables or disables the qhash for the node in the child
4262 * listen list that matches ipaddr. If no matching IP was found
4263 * it will allocate and add a new child listen node to the
4264 * parent listen node. The listen_list_lock is assumed to be
4267 static void irdma_qhash_ctrl(struct irdma_device *iwdev,
4268 struct irdma_cm_listener *parent_listen_node,
4269 struct irdma_cm_info *nfo, u32 *ipaddr, bool ipv4,
4272 struct list_head *child_listen_list = &parent_listen_node->child_listen_list;
4273 struct irdma_cm_listener *child_listen_node;
4274 struct list_head *pos, *tpos;
4275 bool node_allocated = false;
4276 enum irdma_quad_hash_manage_type op = ifup ?
4277 IRDMA_QHASH_MANAGE_TYPE_ADD :
4278 IRDMA_QHASH_MANAGE_TYPE_DELETE;
4281 list_for_each_safe (pos, tpos, child_listen_list) {
4282 child_listen_node = list_entry(pos, struct irdma_cm_listener,
4284 if (!memcmp(child_listen_node->loc_addr, ipaddr, ipv4 ? 4 : 16))
4288 /* if not found then add a child listener if interface is going up */
4291 child_listen_node = kmemdup(parent_listen_node,
4292 sizeof(*child_listen_node), GFP_ATOMIC);
4293 if (!child_listen_node)
4296 node_allocated = true;
4297 memcpy(child_listen_node->loc_addr, ipaddr, ipv4 ? 4 : 16);
4300 memcpy(nfo->loc_addr, child_listen_node->loc_addr,
4301 sizeof(nfo->loc_addr));
4302 nfo->vlan_id = child_listen_node->vlan_id;
4303 err = irdma_manage_qhash(iwdev, nfo, IRDMA_QHASH_TYPE_TCP_SYN, op, NULL,
4306 child_listen_node->qhash_set = ifup;
4308 list_add(&child_listen_node->child_listen_list,
4309 &parent_listen_node->child_listen_list);
4310 } else if (node_allocated) {
4311 kfree(child_listen_node);
4316 * irdma_if_notify - process an ifdown on an interface
4317 * @iwdev: device pointer
4318 * @netdev: network device structure
4319 * @ipaddr: Pointer to IPv4 or IPv6 address
4320 * @ipv4: flag indicating IPv4 when true
4321 * @ifup: flag indicating interface up when true
4323 void irdma_if_notify(struct irdma_device *iwdev, struct net_device *netdev,
4324 u32 *ipaddr, bool ipv4, bool ifup)
4326 struct irdma_cm_core *cm_core = &iwdev->cm_core;
4327 unsigned long flags;
4328 struct irdma_cm_listener *listen_node;
4329 static const u32 ip_zero[4] = { 0, 0, 0, 0 };
4330 struct irdma_cm_info nfo = {};
4331 u16 vlan_id = rdma_vlan_dev_vlan_id(netdev);
4332 enum irdma_quad_hash_manage_type op = ifup ?
4333 IRDMA_QHASH_MANAGE_TYPE_ADD :
4334 IRDMA_QHASH_MANAGE_TYPE_DELETE;
4336 nfo.vlan_id = vlan_id;
4340 /* Disable or enable qhash for listeners */
4341 spin_lock_irqsave(&cm_core->listen_list_lock, flags);
4342 list_for_each_entry (listen_node, &cm_core->listen_list, list) {
4343 if (vlan_id != listen_node->vlan_id ||
4344 (memcmp(listen_node->loc_addr, ipaddr, ipv4 ? 4 : 16) &&
4345 memcmp(listen_node->loc_addr, ip_zero, ipv4 ? 4 : 16)))
4348 memcpy(nfo.loc_addr, listen_node->loc_addr,
4349 sizeof(nfo.loc_addr));
4350 nfo.loc_port = listen_node->loc_port;
4351 nfo.user_pri = listen_node->user_pri;
4352 if (!list_empty(&listen_node->child_listen_list)) {
4353 irdma_qhash_ctrl(iwdev, listen_node, &nfo, ipaddr, ipv4,
4355 } else if (memcmp(listen_node->loc_addr, ip_zero,
4357 if (!irdma_manage_qhash(iwdev, &nfo,
4358 IRDMA_QHASH_TYPE_TCP_SYN, op,
4360 listen_node->qhash_set = ifup;
4363 spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
4365 /* disconnect any connected qp's on ifdown */
4367 irdma_cm_teardown_connections(iwdev, ipaddr, &nfo, false);