1 /*******************************************************************************
3 * Copyright (c) 2015-2016 Intel Corporation. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenFabrics.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 *******************************************************************************/
35 #include <linux/atomic.h>
37 #include <linux/tcp.h>
38 #include <linux/init.h>
39 #include <linux/if_arp.h>
40 #include <linux/if_vlan.h>
41 #include <linux/notifier.h>
42 #include <linux/net.h>
43 #include <linux/types.h>
44 #include <linux/timer.h>
45 #include <linux/time.h>
46 #include <linux/delay.h>
47 #include <linux/etherdevice.h>
48 #include <linux/netdevice.h>
49 #include <linux/random.h>
50 #include <linux/list.h>
51 #include <linux/threads.h>
52 #include <linux/highmem.h>
54 #include <net/ndisc.h>
55 #include <net/neighbour.h>
56 #include <net/route.h>
57 #include <net/addrconf.h>
58 #include <net/ip6_route.h>
59 #include <net/ip_fib.h>
61 #include <asm/checksum.h>
65 static void i40iw_rem_ref_cm_node(struct i40iw_cm_node *);
66 static void i40iw_cm_post_event(struct i40iw_cm_event *event);
67 static void i40iw_disconnect_worker(struct work_struct *work);
70 * i40iw_free_sqbuf - put back puda buffer if refcount = 0
72 * @buf: puda buffer to free
74 void i40iw_free_sqbuf(struct i40iw_sc_dev *dev, void *bufp)
76 struct i40iw_puda_buf *buf = (struct i40iw_puda_buf *)bufp;
77 struct i40iw_puda_rsrc *ilq = dev->ilq;
79 if (!atomic_dec_return(&buf->refcount))
80 i40iw_puda_ret_bufpool(ilq, buf);
84 * i40iw_derive_hw_ird_setting - Calculate IRD
86 * @cm_ird: IRD of connection's node
88 * The ird from the connection is rounded to a supported HW
89 * setting (2,8,32,64) and then encoded for ird_size field of
92 static u8 i40iw_derive_hw_ird_setting(u16 cm_ird)
97 /* round-off to next powerof2 */
98 while (pof2_cm_ird < cm_ird)
101 /* ird_size field is encoded in qp_ctx */
102 switch (pof2_cm_ird) {
103 case I40IW_HW_IRD_SETTING_64:
104 encoded_ird_size = 3;
106 case I40IW_HW_IRD_SETTING_32:
107 case I40IW_HW_IRD_SETTING_16:
108 encoded_ird_size = 2;
110 case I40IW_HW_IRD_SETTING_8:
111 case I40IW_HW_IRD_SETTING_4:
112 encoded_ird_size = 1;
114 case I40IW_HW_IRD_SETTING_2:
116 encoded_ird_size = 0;
119 return encoded_ird_size;
123 * i40iw_record_ird_ord - Record IRD/ORD passed in
124 * @cm_node: connection's node
125 * @conn_ird: connection IRD
126 * @conn_ord: connection ORD
128 static void i40iw_record_ird_ord(struct i40iw_cm_node *cm_node, u16 conn_ird, u16 conn_ord)
130 if (conn_ird > I40IW_MAX_IRD_SIZE)
131 conn_ird = I40IW_MAX_IRD_SIZE;
133 if (conn_ord > I40IW_MAX_ORD_SIZE)
134 conn_ord = I40IW_MAX_ORD_SIZE;
136 cm_node->ird_size = conn_ird;
137 cm_node->ord_size = conn_ord;
141 * i40iw_copy_ip_ntohl - change network to host ip
145 void i40iw_copy_ip_ntohl(u32 *dst, __be32 *src)
147 *dst++ = ntohl(*src++);
148 *dst++ = ntohl(*src++);
149 *dst++ = ntohl(*src++);
154 * i40iw_copy_ip_htonl - change host addr to network ip
156 * @src: little endian
158 static inline void i40iw_copy_ip_htonl(__be32 *dst, u32 *src)
160 *dst++ = htonl(*src++);
161 *dst++ = htonl(*src++);
162 *dst++ = htonl(*src++);
167 * i40iw_fill_sockaddr4 - get addr info for passive connection
168 * @cm_node: connection's node
169 * @event: upper layer's cm event
171 static inline void i40iw_fill_sockaddr4(struct i40iw_cm_node *cm_node,
172 struct iw_cm_event *event)
174 struct sockaddr_in *laddr = (struct sockaddr_in *)&event->local_addr;
175 struct sockaddr_in *raddr = (struct sockaddr_in *)&event->remote_addr;
177 laddr->sin_family = AF_INET;
178 raddr->sin_family = AF_INET;
180 laddr->sin_port = htons(cm_node->loc_port);
181 raddr->sin_port = htons(cm_node->rem_port);
183 laddr->sin_addr.s_addr = htonl(cm_node->loc_addr[0]);
184 raddr->sin_addr.s_addr = htonl(cm_node->rem_addr[0]);
188 * i40iw_fill_sockaddr6 - get ipv6 addr info for passive side
189 * @cm_node: connection's node
190 * @event: upper layer's cm event
192 static inline void i40iw_fill_sockaddr6(struct i40iw_cm_node *cm_node,
193 struct iw_cm_event *event)
195 struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)&event->local_addr;
196 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)&event->remote_addr;
198 laddr6->sin6_family = AF_INET6;
199 raddr6->sin6_family = AF_INET6;
201 laddr6->sin6_port = htons(cm_node->loc_port);
202 raddr6->sin6_port = htons(cm_node->rem_port);
204 i40iw_copy_ip_htonl(laddr6->sin6_addr.in6_u.u6_addr32,
206 i40iw_copy_ip_htonl(raddr6->sin6_addr.in6_u.u6_addr32,
211 * i40iw_get_addr_info
212 * @cm_node: contains ip/tcp info
213 * @cm_info: to get a copy of the cm_node ip/tcp info
215 static void i40iw_get_addr_info(struct i40iw_cm_node *cm_node,
216 struct i40iw_cm_info *cm_info)
218 cm_info->ipv4 = cm_node->ipv4;
219 cm_info->vlan_id = cm_node->vlan_id;
220 memcpy(cm_info->loc_addr, cm_node->loc_addr, sizeof(cm_info->loc_addr));
221 memcpy(cm_info->rem_addr, cm_node->rem_addr, sizeof(cm_info->rem_addr));
222 cm_info->loc_port = cm_node->loc_port;
223 cm_info->rem_port = cm_node->rem_port;
224 cm_info->user_pri = cm_node->user_pri;
228 * i40iw_get_cmevent_info - for cm event upcall
229 * @cm_node: connection's node
230 * @cm_id: upper layers cm struct for the event
231 * @event: upper layer's cm event
233 static inline void i40iw_get_cmevent_info(struct i40iw_cm_node *cm_node,
234 struct iw_cm_id *cm_id,
235 struct iw_cm_event *event)
237 memcpy(&event->local_addr, &cm_id->m_local_addr,
238 sizeof(event->local_addr));
239 memcpy(&event->remote_addr, &cm_id->m_remote_addr,
240 sizeof(event->remote_addr));
242 event->private_data = (void *)cm_node->pdata_buf;
243 event->private_data_len = (u8)cm_node->pdata.size;
244 event->ird = cm_node->ird_size;
245 event->ord = cm_node->ord_size;
250 * i40iw_send_cm_event - upcall cm's event handler
251 * @cm_node: connection's node
252 * @cm_id: upper layer's cm info struct
253 * @type: Event type to indicate
254 * @status: status for the event type
256 static int i40iw_send_cm_event(struct i40iw_cm_node *cm_node,
257 struct iw_cm_id *cm_id,
258 enum iw_cm_event_type type,
261 struct iw_cm_event event;
263 memset(&event, 0, sizeof(event));
265 event.status = status;
267 case IW_CM_EVENT_CONNECT_REQUEST:
269 i40iw_fill_sockaddr4(cm_node, &event);
271 i40iw_fill_sockaddr6(cm_node, &event);
272 event.provider_data = (void *)cm_node;
273 event.private_data = (void *)cm_node->pdata_buf;
274 event.private_data_len = (u8)cm_node->pdata.size;
275 event.ird = cm_node->ird_size;
277 case IW_CM_EVENT_CONNECT_REPLY:
278 i40iw_get_cmevent_info(cm_node, cm_id, &event);
280 case IW_CM_EVENT_ESTABLISHED:
281 event.ird = cm_node->ird_size;
282 event.ord = cm_node->ord_size;
284 case IW_CM_EVENT_DISCONNECT:
286 case IW_CM_EVENT_CLOSE:
289 i40iw_pr_err("event type received type = %d\n", type);
292 return cm_id->event_handler(cm_id, &event);
296 * i40iw_create_event - create cm event
297 * @cm_node: connection's node
298 * @type: Event type to generate
300 static struct i40iw_cm_event *i40iw_create_event(struct i40iw_cm_node *cm_node,
301 enum i40iw_cm_event_type type)
303 struct i40iw_cm_event *event;
308 event = kzalloc(sizeof(*event), GFP_ATOMIC);
314 event->cm_node = cm_node;
315 memcpy(event->cm_info.rem_addr, cm_node->rem_addr, sizeof(event->cm_info.rem_addr));
316 memcpy(event->cm_info.loc_addr, cm_node->loc_addr, sizeof(event->cm_info.loc_addr));
317 event->cm_info.rem_port = cm_node->rem_port;
318 event->cm_info.loc_port = cm_node->loc_port;
319 event->cm_info.cm_id = cm_node->cm_id;
321 i40iw_debug(cm_node->dev,
323 "node=%p event=%p type=%u dst=%pI4 src=%pI4\n",
327 event->cm_info.loc_addr,
328 event->cm_info.rem_addr);
330 i40iw_cm_post_event(event);
335 * i40iw_free_retrans_entry - free send entry
336 * @cm_node: connection's node
338 static void i40iw_free_retrans_entry(struct i40iw_cm_node *cm_node)
340 struct i40iw_sc_dev *dev = cm_node->dev;
341 struct i40iw_timer_entry *send_entry;
343 send_entry = cm_node->send_entry;
345 cm_node->send_entry = NULL;
346 i40iw_free_sqbuf(dev, (void *)send_entry->sqbuf);
348 atomic_dec(&cm_node->ref_count);
353 * i40iw_cleanup_retrans_entry - free send entry with lock
354 * @cm_node: connection's node
356 static void i40iw_cleanup_retrans_entry(struct i40iw_cm_node *cm_node)
360 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
361 i40iw_free_retrans_entry(cm_node);
362 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
366 * i40iw_form_cm_frame - get a free packet and build frame
367 * @cm_node: connection's node ionfo to use in frame
368 * @options: pointer to options info
369 * @hdr: pointer mpa header
370 * @pdata: pointer to private data
371 * @flags: indicates FIN or ACK
373 static struct i40iw_puda_buf *i40iw_form_cm_frame(struct i40iw_cm_node *cm_node,
374 struct i40iw_kmem_info *options,
375 struct i40iw_kmem_info *hdr,
376 struct i40iw_kmem_info *pdata,
379 struct i40iw_puda_buf *sqbuf;
380 struct i40iw_sc_dev *dev = cm_node->dev;
385 struct ipv6hdr *ip6h;
388 u16 eth_hlen = ETH_HLEN;
394 sqbuf = i40iw_puda_get_bufpool(dev->ilq);
400 opts_len = (u32)options->size;
406 pd_len = pdata->size;
408 if (cm_node->vlan_id < VLAN_TAG_PRESENT)
412 packetsize = sizeof(*iph) + sizeof(*tcph);
414 packetsize = sizeof(*ip6h) + sizeof(*tcph);
415 packetsize += opts_len + hdr_len + pd_len;
417 memset(buf, 0x00, eth_hlen + packetsize);
419 sqbuf->totallen = packetsize + eth_hlen;
420 sqbuf->maclen = eth_hlen;
421 sqbuf->tcphlen = sizeof(*tcph) + opts_len;
422 sqbuf->scratch = (void *)cm_node;
424 ethh = (struct ethhdr *)buf;
430 iph = (struct iphdr *)buf;
432 tcph = (struct tcphdr *)buf;
433 buf += sizeof(*tcph);
435 ether_addr_copy(ethh->h_dest, cm_node->rem_mac);
436 ether_addr_copy(ethh->h_source, cm_node->loc_mac);
437 if (cm_node->vlan_id < VLAN_TAG_PRESENT) {
438 ((struct vlan_ethhdr *)ethh)->h_vlan_proto = htons(ETH_P_8021Q);
439 vtag = (cm_node->user_pri << VLAN_PRIO_SHIFT) | cm_node->vlan_id;
440 ((struct vlan_ethhdr *)ethh)->h_vlan_TCI = htons(vtag);
442 ((struct vlan_ethhdr *)ethh)->h_vlan_encapsulated_proto = htons(ETH_P_IP);
444 ethh->h_proto = htons(ETH_P_IP);
447 iph->version = IPVERSION;
448 iph->ihl = 5; /* 5 * 4Byte words, IP headr len */
449 iph->tos = cm_node->tos;
450 iph->tot_len = htons(packetsize);
451 iph->id = htons(++cm_node->tcp_cntxt.loc_id);
453 iph->frag_off = htons(0x4000);
455 iph->protocol = IPPROTO_TCP;
456 iph->saddr = htonl(cm_node->loc_addr[0]);
457 iph->daddr = htonl(cm_node->rem_addr[0]);
460 ip6h = (struct ipv6hdr *)buf;
461 buf += sizeof(*ip6h);
462 tcph = (struct tcphdr *)buf;
463 buf += sizeof(*tcph);
465 ether_addr_copy(ethh->h_dest, cm_node->rem_mac);
466 ether_addr_copy(ethh->h_source, cm_node->loc_mac);
467 if (cm_node->vlan_id < VLAN_TAG_PRESENT) {
468 ((struct vlan_ethhdr *)ethh)->h_vlan_proto = htons(ETH_P_8021Q);
469 vtag = (cm_node->user_pri << VLAN_PRIO_SHIFT) | cm_node->vlan_id;
470 ((struct vlan_ethhdr *)ethh)->h_vlan_TCI = htons(vtag);
471 ((struct vlan_ethhdr *)ethh)->h_vlan_encapsulated_proto = htons(ETH_P_IPV6);
473 ethh->h_proto = htons(ETH_P_IPV6);
476 ip6h->priority = cm_node->tos >> 4;
477 ip6h->flow_lbl[0] = cm_node->tos << 4;
478 ip6h->flow_lbl[1] = 0;
479 ip6h->flow_lbl[2] = 0;
480 ip6h->payload_len = htons(packetsize - sizeof(*ip6h));
482 ip6h->hop_limit = 128;
483 i40iw_copy_ip_htonl(ip6h->saddr.in6_u.u6_addr32,
485 i40iw_copy_ip_htonl(ip6h->daddr.in6_u.u6_addr32,
489 tcph->source = htons(cm_node->loc_port);
490 tcph->dest = htons(cm_node->rem_port);
492 tcph->seq = htonl(cm_node->tcp_cntxt.loc_seq_num);
494 if (flags & SET_ACK) {
495 cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt;
496 tcph->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num);
502 if (flags & SET_SYN) {
503 cm_node->tcp_cntxt.loc_seq_num++;
506 cm_node->tcp_cntxt.loc_seq_num += hdr_len + pd_len;
509 if (flags & SET_FIN) {
510 cm_node->tcp_cntxt.loc_seq_num++;
517 tcph->doff = (u16)((sizeof(*tcph) + opts_len + 3) >> 2);
518 sqbuf->tcphlen = tcph->doff << 2;
519 tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd);
523 memcpy(buf, options->addr, opts_len);
528 memcpy(buf, hdr->addr, hdr_len);
532 if (pdata && pdata->addr)
533 memcpy(buf, pdata->addr, pdata->size);
535 atomic_set(&sqbuf->refcount, 1);
541 * i40iw_send_reset - Send RST packet
542 * @cm_node: connection's node
544 static int i40iw_send_reset(struct i40iw_cm_node *cm_node)
546 struct i40iw_puda_buf *sqbuf;
547 int flags = SET_RST | SET_ACK;
549 sqbuf = i40iw_form_cm_frame(cm_node, NULL, NULL, NULL, flags);
551 i40iw_pr_err("no sqbuf\n");
555 return i40iw_schedule_cm_timer(cm_node, sqbuf, I40IW_TIMER_TYPE_SEND, 0, 1);
559 * i40iw_active_open_err - send event for active side cm error
560 * @cm_node: connection's node
561 * @reset: Flag to send reset or not
563 static void i40iw_active_open_err(struct i40iw_cm_node *cm_node, bool reset)
565 i40iw_cleanup_retrans_entry(cm_node);
566 cm_node->cm_core->stats_connect_errs++;
568 i40iw_debug(cm_node->dev,
570 "%s cm_node=%p state=%d\n",
574 atomic_inc(&cm_node->ref_count);
575 i40iw_send_reset(cm_node);
578 cm_node->state = I40IW_CM_STATE_CLOSED;
579 i40iw_create_event(cm_node, I40IW_CM_EVENT_ABORTED);
583 * i40iw_passive_open_err - handle passive side cm error
584 * @cm_node: connection's node
585 * @reset: send reset or just free cm_node
587 static void i40iw_passive_open_err(struct i40iw_cm_node *cm_node, bool reset)
589 i40iw_cleanup_retrans_entry(cm_node);
590 cm_node->cm_core->stats_passive_errs++;
591 cm_node->state = I40IW_CM_STATE_CLOSED;
592 i40iw_debug(cm_node->dev,
594 "%s cm_node=%p state =%d\n",
599 i40iw_send_reset(cm_node);
601 i40iw_rem_ref_cm_node(cm_node);
605 * i40iw_event_connect_error - to create connect error event
606 * @event: cm information for connect event
608 static void i40iw_event_connect_error(struct i40iw_cm_event *event)
610 struct i40iw_qp *iwqp;
611 struct iw_cm_id *cm_id;
613 cm_id = event->cm_node->cm_id;
617 iwqp = cm_id->provider_data;
619 if (!iwqp || !iwqp->iwdev)
623 cm_id->provider_data = NULL;
624 i40iw_send_cm_event(event->cm_node, cm_id,
625 IW_CM_EVENT_CONNECT_REPLY,
627 cm_id->rem_ref(cm_id);
628 i40iw_rem_ref_cm_node(event->cm_node);
632 * i40iw_process_options
633 * @cm_node: connection's node
634 * @optionsloc: point to start of options
635 * @optionsize: size of all options
636 * @syn_packet: flag if syn packet
638 static int i40iw_process_options(struct i40iw_cm_node *cm_node,
645 union all_known_options *all_options;
646 char got_mss_option = 0;
648 while (offset < optionsize) {
649 all_options = (union all_known_options *)(optionsloc + offset);
650 switch (all_options->as_base.optionnum) {
651 case OPTION_NUMBER_END:
654 case OPTION_NUMBER_NONE:
657 case OPTION_NUMBER_MSS:
658 i40iw_debug(cm_node->dev,
660 "%s: MSS Length: %d Offset: %d Size: %d\n",
662 all_options->as_mss.length,
666 if (all_options->as_mss.length != 4)
668 tmp = ntohs(all_options->as_mss.mss);
669 if (tmp > 0 && tmp < cm_node->tcp_cntxt.mss)
670 cm_node->tcp_cntxt.mss = tmp;
672 case OPTION_NUMBER_WINDOW_SCALE:
673 cm_node->tcp_cntxt.snd_wscale =
674 all_options->as_windowscale.shiftcount;
677 i40iw_debug(cm_node->dev,
679 "TCP Option not understood: %x\n",
680 all_options->as_base.optionnum);
683 offset += all_options->as_base.length;
685 if (!got_mss_option && syn_packet)
686 cm_node->tcp_cntxt.mss = I40IW_CM_DEFAULT_MSS;
691 * i40iw_handle_tcp_options -
692 * @cm_node: connection's node
693 * @tcph: pointer tcp header
694 * @optionsize: size of options rcvd
695 * @passive: active or passive flag
697 static int i40iw_handle_tcp_options(struct i40iw_cm_node *cm_node,
702 u8 *optionsloc = (u8 *)&tcph[1];
705 if (i40iw_process_options(cm_node,
709 i40iw_debug(cm_node->dev,
711 "%s: Node %p, Sending RESET\n",
715 i40iw_passive_open_err(cm_node, true);
717 i40iw_active_open_err(cm_node, true);
722 cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->window) <<
723 cm_node->tcp_cntxt.snd_wscale;
725 if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd)
726 cm_node->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.snd_wnd;
731 * i40iw_build_mpa_v1 - build a MPA V1 frame
732 * @cm_node: connection's node
733 * @mpa_key: to do read0 or write0
735 static void i40iw_build_mpa_v1(struct i40iw_cm_node *cm_node,
739 struct ietf_mpa_v1 *mpa_frame = (struct ietf_mpa_v1 *)start_addr;
742 case MPA_KEY_REQUEST:
743 memcpy(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE);
746 memcpy(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE);
751 mpa_frame->flags = IETF_MPA_FLAGS_CRC;
752 mpa_frame->rev = cm_node->mpa_frame_rev;
753 mpa_frame->priv_data_len = htons(cm_node->pdata.size);
757 * i40iw_build_mpa_v2 - build a MPA V2 frame
758 * @cm_node: connection's node
759 * @start_addr: buffer start address
760 * @mpa_key: to do read0 or write0
762 static void i40iw_build_mpa_v2(struct i40iw_cm_node *cm_node,
766 struct ietf_mpa_v2 *mpa_frame = (struct ietf_mpa_v2 *)start_addr;
767 struct ietf_rtr_msg *rtr_msg = &mpa_frame->rtr_msg;
768 u16 ctrl_ird, ctrl_ord;
770 /* initialize the upper 5 bytes of the frame */
771 i40iw_build_mpa_v1(cm_node, start_addr, mpa_key);
772 mpa_frame->flags |= IETF_MPA_V2_FLAG;
773 mpa_frame->priv_data_len += htons(IETF_RTR_MSG_SIZE);
775 /* initialize RTR msg */
776 if (cm_node->mpav2_ird_ord == IETF_NO_IRD_ORD) {
777 ctrl_ird = IETF_NO_IRD_ORD;
778 ctrl_ord = IETF_NO_IRD_ORD;
780 ctrl_ird = (cm_node->ird_size > IETF_NO_IRD_ORD) ?
781 IETF_NO_IRD_ORD : cm_node->ird_size;
782 ctrl_ord = (cm_node->ord_size > IETF_NO_IRD_ORD) ?
783 IETF_NO_IRD_ORD : cm_node->ord_size;
786 ctrl_ird |= IETF_PEER_TO_PEER;
787 ctrl_ird |= IETF_FLPDU_ZERO_LEN;
790 case MPA_KEY_REQUEST:
791 ctrl_ord |= IETF_RDMA0_WRITE;
792 ctrl_ord |= IETF_RDMA0_READ;
795 switch (cm_node->send_rdma0_op) {
796 case SEND_RDMA_WRITE_ZERO:
797 ctrl_ord |= IETF_RDMA0_WRITE;
799 case SEND_RDMA_READ_ZERO:
800 ctrl_ord |= IETF_RDMA0_READ;
807 rtr_msg->ctrl_ird = htons(ctrl_ird);
808 rtr_msg->ctrl_ord = htons(ctrl_ord);
812 * i40iw_cm_build_mpa_frame - build mpa frame for mpa version 1 or version 2
813 * @cm_node: connection's node
814 * @mpa: mpa: data buffer
815 * @mpa_key: to do read0 or write0
817 static int i40iw_cm_build_mpa_frame(struct i40iw_cm_node *cm_node,
818 struct i40iw_kmem_info *mpa,
823 switch (cm_node->mpa_frame_rev) {
825 hdr_len = sizeof(struct ietf_mpa_v1);
826 i40iw_build_mpa_v1(cm_node, mpa->addr, mpa_key);
829 hdr_len = sizeof(struct ietf_mpa_v2);
830 i40iw_build_mpa_v2(cm_node, mpa->addr, mpa_key);
840 * i40iw_send_mpa_request - active node send mpa request to passive node
841 * @cm_node: connection's node
843 static int i40iw_send_mpa_request(struct i40iw_cm_node *cm_node)
845 struct i40iw_puda_buf *sqbuf;
848 i40iw_pr_err("cm_node == NULL\n");
852 cm_node->mpa_hdr.addr = &cm_node->mpa_frame;
853 cm_node->mpa_hdr.size = i40iw_cm_build_mpa_frame(cm_node,
856 if (!cm_node->mpa_hdr.size) {
857 i40iw_pr_err("mpa size = %d\n", cm_node->mpa_hdr.size);
861 sqbuf = i40iw_form_cm_frame(cm_node,
867 i40iw_pr_err("sq_buf == NULL\n");
870 return i40iw_schedule_cm_timer(cm_node, sqbuf, I40IW_TIMER_TYPE_SEND, 1, 0);
874 * i40iw_send_mpa_reject -
875 * @cm_node: connection's node
876 * @pdata: reject data for connection
877 * @plen: length of reject data
879 static int i40iw_send_mpa_reject(struct i40iw_cm_node *cm_node,
883 struct i40iw_puda_buf *sqbuf;
884 struct i40iw_kmem_info priv_info;
886 cm_node->mpa_hdr.addr = &cm_node->mpa_frame;
887 cm_node->mpa_hdr.size = i40iw_cm_build_mpa_frame(cm_node,
891 cm_node->mpa_frame.flags |= IETF_MPA_FLAGS_REJECT;
892 priv_info.addr = (void *)pdata;
893 priv_info.size = plen;
895 sqbuf = i40iw_form_cm_frame(cm_node,
901 i40iw_pr_err("no sqbuf\n");
904 cm_node->state = I40IW_CM_STATE_FIN_WAIT1;
905 return i40iw_schedule_cm_timer(cm_node, sqbuf, I40IW_TIMER_TYPE_SEND, 1, 0);
909 * recv_mpa - process an IETF MPA frame
910 * @cm_node: connection's node
911 * @buffer: Data pointer
912 * @type: to return accept or reject
913 * @len: Len of mpa buffer
915 static int i40iw_parse_mpa(struct i40iw_cm_node *cm_node, u8 *buffer, u32 *type, u32 len)
917 struct ietf_mpa_v1 *mpa_frame;
918 struct ietf_mpa_v2 *mpa_v2_frame;
919 struct ietf_rtr_msg *rtr_msg;
923 *type = I40IW_MPA_REQUEST_ACCEPT;
925 if (len < sizeof(struct ietf_mpa_v1)) {
926 i40iw_pr_err("ietf buffer small (%x)\n", len);
930 mpa_frame = (struct ietf_mpa_v1 *)buffer;
931 mpa_hdr_len = sizeof(struct ietf_mpa_v1);
932 priv_data_len = ntohs(mpa_frame->priv_data_len);
934 if (priv_data_len > IETF_MAX_PRIV_DATA_LEN) {
935 i40iw_pr_err("large pri_data %d\n", priv_data_len);
938 if (mpa_frame->rev != IETF_MPA_V1 && mpa_frame->rev != IETF_MPA_V2) {
939 i40iw_pr_err("unsupported mpa rev = %d\n", mpa_frame->rev);
942 if (mpa_frame->rev > cm_node->mpa_frame_rev) {
943 i40iw_pr_err("rev %d\n", mpa_frame->rev);
946 cm_node->mpa_frame_rev = mpa_frame->rev;
948 if (cm_node->state != I40IW_CM_STATE_MPAREQ_SENT) {
949 if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE)) {
950 i40iw_pr_err("Unexpected MPA Key received\n");
954 if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE)) {
955 i40iw_pr_err("Unexpected MPA Key received\n");
960 if (priv_data_len + mpa_hdr_len > len) {
961 i40iw_pr_err("ietf buffer len(%x + %x != %x)\n",
962 priv_data_len, mpa_hdr_len, len);
965 if (len > MAX_CM_BUFFER) {
966 i40iw_pr_err("ietf buffer large len = %d\n", len);
970 switch (mpa_frame->rev) {
977 mpa_v2_frame = (struct ietf_mpa_v2 *)buffer;
978 mpa_hdr_len += IETF_RTR_MSG_SIZE;
979 rtr_msg = &mpa_v2_frame->rtr_msg;
981 /* parse rtr message */
982 ctrl_ord = ntohs(rtr_msg->ctrl_ord);
983 ctrl_ird = ntohs(rtr_msg->ctrl_ird);
984 ird_size = ctrl_ird & IETF_NO_IRD_ORD;
985 ord_size = ctrl_ord & IETF_NO_IRD_ORD;
987 if (!(ctrl_ird & IETF_PEER_TO_PEER))
990 if (ird_size == IETF_NO_IRD_ORD || ord_size == IETF_NO_IRD_ORD) {
991 cm_node->mpav2_ird_ord = IETF_NO_IRD_ORD;
995 if (cm_node->state != I40IW_CM_STATE_MPAREQ_SENT) {
997 if (!ord_size && (ctrl_ord & IETF_RDMA0_READ))
998 cm_node->ird_size = 1;
999 if (cm_node->ord_size > ird_size)
1000 cm_node->ord_size = ird_size;
1003 if (!ird_size && (ctrl_ord & IETF_RDMA0_READ))
1005 if (cm_node->ord_size > ird_size)
1006 cm_node->ord_size = ird_size;
1008 if (cm_node->ird_size < ord_size)
1009 /* no resources available */
1014 if (ctrl_ord & IETF_RDMA0_READ)
1015 cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO;
1016 else if (ctrl_ord & IETF_RDMA0_WRITE)
1017 cm_node->send_rdma0_op = SEND_RDMA_WRITE_ZERO;
1018 else /* Not supported RDMA0 operation */
1020 i40iw_debug(cm_node->dev, I40IW_DEBUG_CM,
1021 "MPAV2: Negotiated ORD: %d, IRD: %d\n",
1022 cm_node->ord_size, cm_node->ird_size);
1031 memcpy(cm_node->pdata_buf, buffer + mpa_hdr_len, priv_data_len);
1032 cm_node->pdata.size = priv_data_len;
1034 if (mpa_frame->flags & IETF_MPA_FLAGS_REJECT)
1035 *type = I40IW_MPA_REQUEST_REJECT;
1037 if (mpa_frame->flags & IETF_MPA_FLAGS_MARKERS)
1038 cm_node->snd_mark_en = true;
1044 * i40iw_schedule_cm_timer
1045 * @@cm_node: connection's node
1046 * @sqbuf: buffer to send
1047 * @type: if it es send ot close
1048 * @send_retrans: if rexmits to be done
1049 * @close_when_complete: is cm_node to be removed
1051 * note - cm_node needs to be protected before calling this. Encase in:
1052 * i40iw_rem_ref_cm_node(cm_core, cm_node);
1053 * i40iw_schedule_cm_timer(...)
1054 * atomic_inc(&cm_node->ref_count);
1056 int i40iw_schedule_cm_timer(struct i40iw_cm_node *cm_node,
1057 struct i40iw_puda_buf *sqbuf,
1058 enum i40iw_timer_type type,
1060 int close_when_complete)
1062 struct i40iw_sc_dev *dev = cm_node->dev;
1063 struct i40iw_cm_core *cm_core = cm_node->cm_core;
1064 struct i40iw_timer_entry *new_send;
1067 unsigned long flags;
1069 new_send = kzalloc(sizeof(*new_send), GFP_ATOMIC);
1071 i40iw_free_sqbuf(cm_node->dev, (void *)sqbuf);
1074 new_send->retrycount = I40IW_DEFAULT_RETRYS;
1075 new_send->retranscount = I40IW_DEFAULT_RETRANS;
1076 new_send->sqbuf = sqbuf;
1077 new_send->timetosend = jiffies;
1078 new_send->type = type;
1079 new_send->send_retrans = send_retrans;
1080 new_send->close_when_complete = close_when_complete;
1082 if (type == I40IW_TIMER_TYPE_CLOSE) {
1083 new_send->timetosend += (HZ / 10);
1084 if (cm_node->close_entry) {
1086 i40iw_free_sqbuf(cm_node->dev, (void *)sqbuf);
1087 i40iw_pr_err("already close entry\n");
1090 cm_node->close_entry = new_send;
1093 if (type == I40IW_TIMER_TYPE_SEND) {
1094 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1095 cm_node->send_entry = new_send;
1096 atomic_inc(&cm_node->ref_count);
1097 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
1098 new_send->timetosend = jiffies + I40IW_RETRY_TIMEOUT;
1100 atomic_inc(&sqbuf->refcount);
1101 i40iw_puda_send_buf(dev->ilq, sqbuf);
1102 if (!send_retrans) {
1103 i40iw_cleanup_retrans_entry(cm_node);
1104 if (close_when_complete)
1105 i40iw_rem_ref_cm_node(cm_node);
1110 spin_lock_irqsave(&cm_core->ht_lock, flags);
1111 was_timer_set = timer_pending(&cm_core->tcp_timer);
1113 if (!was_timer_set) {
1114 cm_core->tcp_timer.expires = new_send->timetosend;
1115 add_timer(&cm_core->tcp_timer);
1117 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
1123 * i40iw_retrans_expired - Could not rexmit the packet
1124 * @cm_node: connection's node
1126 static void i40iw_retrans_expired(struct i40iw_cm_node *cm_node)
1128 struct iw_cm_id *cm_id = cm_node->cm_id;
1129 enum i40iw_cm_node_state state = cm_node->state;
1131 cm_node->state = I40IW_CM_STATE_CLOSED;
1133 case I40IW_CM_STATE_SYN_RCVD:
1134 case I40IW_CM_STATE_CLOSING:
1135 i40iw_rem_ref_cm_node(cm_node);
1137 case I40IW_CM_STATE_FIN_WAIT1:
1138 case I40IW_CM_STATE_LAST_ACK:
1140 cm_id->rem_ref(cm_id);
1141 i40iw_send_reset(cm_node);
1144 atomic_inc(&cm_node->ref_count);
1145 i40iw_send_reset(cm_node);
1146 i40iw_create_event(cm_node, I40IW_CM_EVENT_ABORTED);
1152 * i40iw_handle_close_entry - for handling retry/timeouts
1153 * @cm_node: connection's node
1154 * @rem_node: flag for remove cm_node
1156 static void i40iw_handle_close_entry(struct i40iw_cm_node *cm_node, u32 rem_node)
1158 struct i40iw_timer_entry *close_entry = cm_node->close_entry;
1159 struct iw_cm_id *cm_id = cm_node->cm_id;
1160 struct i40iw_qp *iwqp;
1161 unsigned long flags;
1165 iwqp = (struct i40iw_qp *)close_entry->sqbuf;
1167 spin_lock_irqsave(&iwqp->lock, flags);
1169 iwqp->hw_tcp_state = I40IW_TCP_STATE_CLOSED;
1170 iwqp->hw_iwarp_state = I40IW_QP_STATE_ERROR;
1171 iwqp->last_aeq = I40IW_AE_RESET_SENT;
1172 iwqp->ibqp_state = IB_QPS_ERR;
1173 spin_unlock_irqrestore(&iwqp->lock, flags);
1174 i40iw_cm_disconn(iwqp);
1176 spin_unlock_irqrestore(&iwqp->lock, flags);
1178 } else if (rem_node) {
1179 /* TIME_WAIT state */
1180 i40iw_rem_ref_cm_node(cm_node);
1183 cm_id->rem_ref(cm_id);
1185 cm_node->close_entry = NULL;
1189 * i40iw_cm_timer_tick - system's timer expired callback
1190 * @pass: Pointing to cm_core
1192 static void i40iw_cm_timer_tick(unsigned long pass)
1194 unsigned long nexttimeout = jiffies + I40IW_LONG_TIME;
1195 struct i40iw_cm_node *cm_node;
1196 struct i40iw_timer_entry *send_entry, *close_entry;
1197 struct list_head *list_core_temp;
1198 struct list_head *list_node;
1199 struct i40iw_cm_core *cm_core = (struct i40iw_cm_core *)pass;
1201 unsigned long timetosend;
1202 struct i40iw_sc_dev *dev;
1203 unsigned long flags;
1205 struct list_head timer_list;
1207 INIT_LIST_HEAD(&timer_list);
1208 spin_lock_irqsave(&cm_core->ht_lock, flags);
1210 list_for_each_safe(list_node, list_core_temp, &cm_core->connected_nodes) {
1211 cm_node = container_of(list_node, struct i40iw_cm_node, list);
1212 if (cm_node->close_entry || cm_node->send_entry) {
1213 atomic_inc(&cm_node->ref_count);
1214 list_add(&cm_node->timer_entry, &timer_list);
1217 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
1219 list_for_each_safe(list_node, list_core_temp, &timer_list) {
1220 cm_node = container_of(list_node,
1221 struct i40iw_cm_node,
1223 close_entry = cm_node->close_entry;
1226 if (time_after(close_entry->timetosend, jiffies)) {
1227 if (nexttimeout > close_entry->timetosend ||
1229 nexttimeout = close_entry->timetosend;
1233 i40iw_handle_close_entry(cm_node, 1);
1237 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1239 send_entry = cm_node->send_entry;
1242 if (time_after(send_entry->timetosend, jiffies)) {
1243 if (cm_node->state != I40IW_CM_STATE_OFFLOADED) {
1244 if ((nexttimeout > send_entry->timetosend) ||
1246 nexttimeout = send_entry->timetosend;
1250 i40iw_free_retrans_entry(cm_node);
1255 if ((cm_node->state == I40IW_CM_STATE_OFFLOADED) ||
1256 (cm_node->state == I40IW_CM_STATE_CLOSED)) {
1257 i40iw_free_retrans_entry(cm_node);
1261 if (!send_entry->retranscount || !send_entry->retrycount) {
1262 i40iw_free_retrans_entry(cm_node);
1264 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
1265 i40iw_retrans_expired(cm_node);
1266 cm_node->state = I40IW_CM_STATE_CLOSED;
1267 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1270 cm_node->cm_core->stats_pkt_retrans++;
1271 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
1274 atomic_inc(&send_entry->sqbuf->refcount);
1275 i40iw_puda_send_buf(dev->ilq, send_entry->sqbuf);
1276 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1277 if (send_entry->send_retrans) {
1278 send_entry->retranscount--;
1279 timetosend = (I40IW_RETRY_TIMEOUT <<
1280 (I40IW_DEFAULT_RETRANS -
1281 send_entry->retranscount));
1283 send_entry->timetosend = jiffies +
1284 min(timetosend, I40IW_MAX_TIMEOUT);
1285 if (nexttimeout > send_entry->timetosend || !settimer) {
1286 nexttimeout = send_entry->timetosend;
1290 int close_when_complete;
1292 close_when_complete = send_entry->close_when_complete;
1293 i40iw_debug(cm_node->dev,
1295 "cm_node=%p state=%d\n",
1298 i40iw_free_retrans_entry(cm_node);
1299 if (close_when_complete)
1300 i40iw_rem_ref_cm_node(cm_node);
1303 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
1304 i40iw_rem_ref_cm_node(cm_node);
1308 spin_lock_irqsave(&cm_core->ht_lock, flags);
1309 if (!timer_pending(&cm_core->tcp_timer)) {
1310 cm_core->tcp_timer.expires = nexttimeout;
1311 add_timer(&cm_core->tcp_timer);
1313 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
1318 * i40iw_send_syn - send SYN packet
1319 * @cm_node: connection's node
1320 * @sendack: flag to set ACK bit or not
1322 int i40iw_send_syn(struct i40iw_cm_node *cm_node, u32 sendack)
1324 struct i40iw_puda_buf *sqbuf;
1325 int flags = SET_SYN;
1326 char optionsbuffer[sizeof(struct option_mss) +
1327 sizeof(struct option_windowscale) +
1328 sizeof(struct option_base) + TCP_OPTIONS_PADDING];
1329 struct i40iw_kmem_info opts;
1331 int optionssize = 0;
1332 /* Sending MSS option */
1333 union all_known_options *options;
1335 opts.addr = optionsbuffer;
1337 i40iw_pr_err("no cm_node\n");
1341 options = (union all_known_options *)&optionsbuffer[optionssize];
1342 options->as_mss.optionnum = OPTION_NUMBER_MSS;
1343 options->as_mss.length = sizeof(struct option_mss);
1344 options->as_mss.mss = htons(cm_node->tcp_cntxt.mss);
1345 optionssize += sizeof(struct option_mss);
1347 options = (union all_known_options *)&optionsbuffer[optionssize];
1348 options->as_windowscale.optionnum = OPTION_NUMBER_WINDOW_SCALE;
1349 options->as_windowscale.length = sizeof(struct option_windowscale);
1350 options->as_windowscale.shiftcount = cm_node->tcp_cntxt.rcv_wscale;
1351 optionssize += sizeof(struct option_windowscale);
1352 options = (union all_known_options *)&optionsbuffer[optionssize];
1353 options->as_end = OPTION_NUMBER_END;
1359 opts.size = optionssize;
1361 sqbuf = i40iw_form_cm_frame(cm_node, &opts, NULL, NULL, flags);
1363 i40iw_pr_err("no sqbuf\n");
1366 return i40iw_schedule_cm_timer(cm_node, sqbuf, I40IW_TIMER_TYPE_SEND, 1, 0);
1370 * i40iw_send_ack - Send ACK packet
1371 * @cm_node: connection's node
1373 static void i40iw_send_ack(struct i40iw_cm_node *cm_node)
1375 struct i40iw_puda_buf *sqbuf;
1377 sqbuf = i40iw_form_cm_frame(cm_node, NULL, NULL, NULL, SET_ACK);
1379 i40iw_puda_send_buf(cm_node->dev->ilq, sqbuf);
1381 i40iw_pr_err("no sqbuf\n");
1385 * i40iw_send_fin - Send FIN pkt
1386 * @cm_node: connection's node
1388 static int i40iw_send_fin(struct i40iw_cm_node *cm_node)
1390 struct i40iw_puda_buf *sqbuf;
1392 sqbuf = i40iw_form_cm_frame(cm_node, NULL, NULL, NULL, SET_ACK | SET_FIN);
1394 i40iw_pr_err("no sqbuf\n");
1397 return i40iw_schedule_cm_timer(cm_node, sqbuf, I40IW_TIMER_TYPE_SEND, 1, 0);
1401 * i40iw_find_node - find a cm node that matches the reference cm node
1402 * @cm_core: cm's core
1403 * @rem_port: remote tcp port num
1404 * @rem_addr: remote ip addr
1405 * @loc_port: local tcp port num
1406 * @loc_addr: loc ip addr
1407 * @add_refcnt: flag to increment refcount of cm_node
1409 struct i40iw_cm_node *i40iw_find_node(struct i40iw_cm_core *cm_core,
1416 struct list_head *hte;
1417 struct i40iw_cm_node *cm_node;
1418 unsigned long flags;
1420 hte = &cm_core->connected_nodes;
1422 /* walk list and find cm_node associated with this session ID */
1423 spin_lock_irqsave(&cm_core->ht_lock, flags);
1424 list_for_each_entry(cm_node, hte, list) {
1425 if (!memcmp(cm_node->loc_addr, loc_addr, sizeof(cm_node->loc_addr)) &&
1426 (cm_node->loc_port == loc_port) &&
1427 !memcmp(cm_node->rem_addr, rem_addr, sizeof(cm_node->rem_addr)) &&
1428 (cm_node->rem_port == rem_port)) {
1430 atomic_inc(&cm_node->ref_count);
1431 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
1435 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
1442 * i40iw_find_listener - find a cm node listening on this addr-port pair
1443 * @cm_core: cm's core
1444 * @dst_port: listener tcp port num
1445 * @dst_addr: listener ip addr
1446 * @listener_state: state to match with listen node's
1448 static struct i40iw_cm_listener *i40iw_find_listener(
1449 struct i40iw_cm_core *cm_core,
1453 enum i40iw_cm_listener_state
1456 struct i40iw_cm_listener *listen_node;
1457 static const u32 ip_zero[4] = { 0, 0, 0, 0 };
1460 unsigned long flags;
1462 /* walk list and find cm_node associated with this session ID */
1463 spin_lock_irqsave(&cm_core->listen_list_lock, flags);
1464 list_for_each_entry(listen_node, &cm_core->listen_nodes, list) {
1465 memcpy(listen_addr, listen_node->loc_addr, sizeof(listen_addr));
1466 listen_port = listen_node->loc_port;
1467 /* compare node pair, return node handle if a match */
1468 if ((!memcmp(listen_addr, dst_addr, sizeof(listen_addr)) ||
1469 !memcmp(listen_addr, ip_zero, sizeof(listen_addr))) &&
1470 (listen_port == dst_port) &&
1471 (listener_state & listen_node->listener_state)) {
1472 atomic_inc(&listen_node->ref_count);
1473 spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
1477 spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
1482 * i40iw_add_hte_node - add a cm node to the hash table
1483 * @cm_core: cm's core
1484 * @cm_node: connection's node
1486 static void i40iw_add_hte_node(struct i40iw_cm_core *cm_core,
1487 struct i40iw_cm_node *cm_node)
1489 struct list_head *hte;
1490 unsigned long flags;
1492 if (!cm_node || !cm_core) {
1493 i40iw_pr_err("cm_node or cm_core == NULL\n");
1496 spin_lock_irqsave(&cm_core->ht_lock, flags);
1498 /* get a handle on the hash table element (list head for this slot) */
1499 hte = &cm_core->connected_nodes;
1500 list_add_tail(&cm_node->list, hte);
1501 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
1505 * listen_port_in_use - determine if port is in use
1506 * @port: Listen port number
1508 static bool i40iw_listen_port_in_use(struct i40iw_cm_core *cm_core, u16 port)
1510 struct i40iw_cm_listener *listen_node;
1511 unsigned long flags;
1514 spin_lock_irqsave(&cm_core->listen_list_lock, flags);
1515 list_for_each_entry(listen_node, &cm_core->listen_nodes, list) {
1516 if (listen_node->loc_port == port) {
1521 spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
1526 * i40iw_del_multiple_qhash - Remove qhash and child listens
1527 * @iwdev: iWarp device
1528 * @cm_info: CM info for parent listen node
1529 * @cm_parent_listen_node: The parent listen node
1531 static enum i40iw_status_code i40iw_del_multiple_qhash(
1532 struct i40iw_device *iwdev,
1533 struct i40iw_cm_info *cm_info,
1534 struct i40iw_cm_listener *cm_parent_listen_node)
1536 struct i40iw_cm_listener *child_listen_node;
1537 enum i40iw_status_code ret = I40IW_ERR_CONFIG;
1538 struct list_head *pos, *tpos;
1539 unsigned long flags;
1541 spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, flags);
1542 list_for_each_safe(pos, tpos, &cm_parent_listen_node->child_listen_list) {
1543 child_listen_node = list_entry(pos, struct i40iw_cm_listener, child_listen_list);
1544 if (child_listen_node->ipv4)
1545 i40iw_debug(&iwdev->sc_dev,
1547 "removing child listen for IP=%pI4, port=%d, vlan=%d\n",
1548 child_listen_node->loc_addr,
1549 child_listen_node->loc_port,
1550 child_listen_node->vlan_id);
1552 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_CM,
1553 "removing child listen for IP=%pI6, port=%d, vlan=%d\n",
1554 child_listen_node->loc_addr,
1555 child_listen_node->loc_port,
1556 child_listen_node->vlan_id);
1558 memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
1559 sizeof(cm_info->loc_addr));
1560 cm_info->vlan_id = child_listen_node->vlan_id;
1561 if (child_listen_node->qhash_set) {
1562 ret = i40iw_manage_qhash(iwdev, cm_info,
1563 I40IW_QHASH_TYPE_TCP_SYN,
1564 I40IW_QHASH_MANAGE_TYPE_DELETE,
1566 child_listen_node->qhash_set = false;
1568 ret = I40IW_SUCCESS;
1570 i40iw_debug(&iwdev->sc_dev,
1572 "freed pointer = %p\n",
1574 kfree(child_listen_node);
1575 cm_parent_listen_node->cm_core->stats_listen_nodes_destroyed++;
1577 spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
1583 * i40iw_netdev_vlan_ipv6 - Gets the netdev and mac
1584 * @addr: local IPv6 address
1585 * @vlan_id: vlan id for the given IPv6 address
1586 * @mac: mac address for the given IPv6 address
1588 * Returns the net_device of the IPv6 address and also sets the
1589 * vlan id and mac for that address.
1591 static struct net_device *i40iw_netdev_vlan_ipv6(u32 *addr, u16 *vlan_id, u8 *mac)
1593 struct net_device *ip_dev = NULL;
1594 struct in6_addr laddr6;
1596 if (!IS_ENABLED(CONFIG_IPV6))
1598 i40iw_copy_ip_htonl(laddr6.in6_u.u6_addr32, addr);
1600 *vlan_id = I40IW_NO_VLAN;
1604 for_each_netdev_rcu(&init_net, ip_dev) {
1605 if (ipv6_chk_addr(&init_net, &laddr6, ip_dev, 1)) {
1607 *vlan_id = rdma_vlan_dev_vlan_id(ip_dev);
1608 if (ip_dev->dev_addr && mac)
1609 ether_addr_copy(mac, ip_dev->dev_addr);
1618 * i40iw_get_vlan_ipv4 - Returns the vlan_id for IPv4 address
1619 * @addr: local IPv4 address
1621 static u16 i40iw_get_vlan_ipv4(u32 *addr)
1623 struct net_device *netdev;
1624 u16 vlan_id = I40IW_NO_VLAN;
1626 netdev = ip_dev_find(&init_net, htonl(addr[0]));
1628 vlan_id = rdma_vlan_dev_vlan_id(netdev);
1635 * i40iw_add_mqh_6 - Adds multiple qhashes for IPv6
1636 * @iwdev: iWarp device
1637 * @cm_info: CM info for parent listen node
1638 * @cm_parent_listen_node: The parent listen node
1640 * Adds a qhash and a child listen node for every IPv6 address
1641 * on the adapter and adds the associated qhash filter
1643 static enum i40iw_status_code i40iw_add_mqh_6(struct i40iw_device *iwdev,
1644 struct i40iw_cm_info *cm_info,
1645 struct i40iw_cm_listener *cm_parent_listen_node)
1647 struct net_device *ip_dev;
1648 struct inet6_dev *idev;
1649 struct inet6_ifaddr *ifp, *tmp;
1650 enum i40iw_status_code ret = 0;
1651 struct i40iw_cm_listener *child_listen_node;
1652 unsigned long flags;
1655 for_each_netdev_rcu(&init_net, ip_dev) {
1656 if ((((rdma_vlan_dev_vlan_id(ip_dev) < I40IW_NO_VLAN) &&
1657 (rdma_vlan_dev_real_dev(ip_dev) == iwdev->netdev)) ||
1658 (ip_dev == iwdev->netdev)) && (ip_dev->flags & IFF_UP)) {
1659 idev = __in6_dev_get(ip_dev);
1661 i40iw_pr_err("idev == NULL\n");
1664 list_for_each_entry_safe(ifp, tmp, &idev->addr_list, if_list) {
1665 i40iw_debug(&iwdev->sc_dev,
1667 "IP=%pI6, vlan_id=%d, MAC=%pM\n",
1669 rdma_vlan_dev_vlan_id(ip_dev),
1672 kzalloc(sizeof(*child_listen_node), GFP_ATOMIC);
1673 i40iw_debug(&iwdev->sc_dev,
1675 "Allocating child listener %p\n",
1677 if (!child_listen_node) {
1678 i40iw_pr_err("listener memory allocation\n");
1679 ret = I40IW_ERR_NO_MEMORY;
1682 cm_info->vlan_id = rdma_vlan_dev_vlan_id(ip_dev);
1683 cm_parent_listen_node->vlan_id = cm_info->vlan_id;
1685 memcpy(child_listen_node, cm_parent_listen_node,
1686 sizeof(*child_listen_node));
1688 i40iw_copy_ip_ntohl(child_listen_node->loc_addr,
1689 ifp->addr.in6_u.u6_addr32);
1690 memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
1691 sizeof(cm_info->loc_addr));
1693 ret = i40iw_manage_qhash(iwdev, cm_info,
1694 I40IW_QHASH_TYPE_TCP_SYN,
1695 I40IW_QHASH_MANAGE_TYPE_ADD,
1698 child_listen_node->qhash_set = true;
1699 spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, flags);
1700 list_add(&child_listen_node->child_listen_list,
1701 &cm_parent_listen_node->child_listen_list);
1702 spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
1703 cm_parent_listen_node->cm_core->stats_listen_nodes_created++;
1705 kfree(child_listen_node);
1716 * i40iw_add_mqh_4 - Adds multiple qhashes for IPv4
1717 * @iwdev: iWarp device
1718 * @cm_info: CM info for parent listen node
1719 * @cm_parent_listen_node: The parent listen node
1721 * Adds a qhash and a child listen node for every IPv4 address
1722 * on the adapter and adds the associated qhash filter
1724 static enum i40iw_status_code i40iw_add_mqh_4(
1725 struct i40iw_device *iwdev,
1726 struct i40iw_cm_info *cm_info,
1727 struct i40iw_cm_listener *cm_parent_listen_node)
1729 struct net_device *dev;
1730 struct in_device *idev;
1731 struct i40iw_cm_listener *child_listen_node;
1732 enum i40iw_status_code ret = 0;
1733 unsigned long flags;
1736 for_each_netdev(&init_net, dev) {
1737 if ((((rdma_vlan_dev_vlan_id(dev) < I40IW_NO_VLAN) &&
1738 (rdma_vlan_dev_real_dev(dev) == iwdev->netdev)) ||
1739 (dev == iwdev->netdev)) && (dev->flags & IFF_UP)) {
1740 idev = in_dev_get(dev);
1742 i40iw_debug(&iwdev->sc_dev,
1744 "Allocating child CM Listener forIP=%pI4, vlan_id=%d, MAC=%pM\n",
1746 rdma_vlan_dev_vlan_id(dev),
1748 child_listen_node = kzalloc(sizeof(*child_listen_node), GFP_ATOMIC);
1749 cm_parent_listen_node->cm_core->stats_listen_nodes_created++;
1750 i40iw_debug(&iwdev->sc_dev,
1752 "Allocating child listener %p\n",
1754 if (!child_listen_node) {
1755 i40iw_pr_err("listener memory allocation\n");
1757 ret = I40IW_ERR_NO_MEMORY;
1760 cm_info->vlan_id = rdma_vlan_dev_vlan_id(dev);
1761 cm_parent_listen_node->vlan_id = cm_info->vlan_id;
1762 memcpy(child_listen_node,
1763 cm_parent_listen_node,
1764 sizeof(*child_listen_node));
1766 child_listen_node->loc_addr[0] = ntohl(ifa->ifa_address);
1767 memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
1768 sizeof(cm_info->loc_addr));
1770 ret = i40iw_manage_qhash(iwdev,
1772 I40IW_QHASH_TYPE_TCP_SYN,
1773 I40IW_QHASH_MANAGE_TYPE_ADD,
1777 child_listen_node->qhash_set = true;
1778 spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, flags);
1779 list_add(&child_listen_node->child_listen_list,
1780 &cm_parent_listen_node->child_listen_list);
1781 spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
1783 kfree(child_listen_node);
1784 cm_parent_listen_node->cm_core->stats_listen_nodes_created--;
1797 * i40iw_dec_refcnt_listen - delete listener and associated cm nodes
1798 * @cm_core: cm's core
1799 * @free_hanging_nodes: to free associated cm_nodes
1800 * @apbvt_del: flag to delete the apbvt
1802 static int i40iw_dec_refcnt_listen(struct i40iw_cm_core *cm_core,
1803 struct i40iw_cm_listener *listener,
1804 int free_hanging_nodes, bool apbvt_del)
1808 struct list_head *list_pos;
1809 struct list_head *list_temp;
1810 struct i40iw_cm_node *cm_node;
1811 struct list_head reset_list;
1812 struct i40iw_cm_info nfo;
1813 struct i40iw_cm_node *loopback;
1814 enum i40iw_cm_node_state old_state;
1815 unsigned long flags;
1817 /* free non-accelerated child nodes for this listener */
1818 INIT_LIST_HEAD(&reset_list);
1819 if (free_hanging_nodes) {
1820 spin_lock_irqsave(&cm_core->ht_lock, flags);
1821 list_for_each_safe(list_pos, list_temp, &cm_core->connected_nodes) {
1822 cm_node = container_of(list_pos, struct i40iw_cm_node, list);
1823 if ((cm_node->listener == listener) && !cm_node->accelerated) {
1824 atomic_inc(&cm_node->ref_count);
1825 list_add(&cm_node->reset_entry, &reset_list);
1828 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
1831 list_for_each_safe(list_pos, list_temp, &reset_list) {
1832 cm_node = container_of(list_pos, struct i40iw_cm_node, reset_entry);
1833 loopback = cm_node->loopbackpartner;
1834 if (cm_node->state >= I40IW_CM_STATE_FIN_WAIT1) {
1835 i40iw_rem_ref_cm_node(cm_node);
1838 i40iw_cleanup_retrans_entry(cm_node);
1839 err = i40iw_send_reset(cm_node);
1841 cm_node->state = I40IW_CM_STATE_CLOSED;
1842 i40iw_pr_err("send reset\n");
1844 old_state = cm_node->state;
1845 cm_node->state = I40IW_CM_STATE_LISTENER_DESTROYED;
1846 if (old_state != I40IW_CM_STATE_MPAREQ_RCVD)
1847 i40iw_rem_ref_cm_node(cm_node);
1850 struct i40iw_cm_event event;
1852 event.cm_node = loopback;
1853 memcpy(event.cm_info.rem_addr,
1854 loopback->rem_addr, sizeof(event.cm_info.rem_addr));
1855 memcpy(event.cm_info.loc_addr,
1856 loopback->loc_addr, sizeof(event.cm_info.loc_addr));
1857 event.cm_info.rem_port = loopback->rem_port;
1858 event.cm_info.loc_port = loopback->loc_port;
1859 event.cm_info.cm_id = loopback->cm_id;
1860 event.cm_info.ipv4 = loopback->ipv4;
1861 atomic_inc(&loopback->ref_count);
1862 loopback->state = I40IW_CM_STATE_CLOSED;
1863 i40iw_event_connect_error(&event);
1864 cm_node->state = I40IW_CM_STATE_LISTENER_DESTROYED;
1865 i40iw_rem_ref_cm_node(cm_node);
1870 if (!atomic_dec_return(&listener->ref_count)) {
1871 spin_lock_irqsave(&cm_core->listen_list_lock, flags);
1872 list_del(&listener->list);
1873 spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
1875 if (listener->iwdev) {
1876 if (apbvt_del && !i40iw_listen_port_in_use(cm_core, listener->loc_port))
1877 i40iw_manage_apbvt(listener->iwdev,
1879 I40IW_MANAGE_APBVT_DEL);
1881 memcpy(nfo.loc_addr, listener->loc_addr, sizeof(nfo.loc_addr));
1882 nfo.loc_port = listener->loc_port;
1883 nfo.ipv4 = listener->ipv4;
1884 nfo.vlan_id = listener->vlan_id;
1885 nfo.user_pri = listener->user_pri;
1887 if (!list_empty(&listener->child_listen_list)) {
1888 i40iw_del_multiple_qhash(listener->iwdev, &nfo, listener);
1890 if (listener->qhash_set)
1891 i40iw_manage_qhash(listener->iwdev,
1893 I40IW_QHASH_TYPE_TCP_SYN,
1894 I40IW_QHASH_MANAGE_TYPE_DELETE,
1900 cm_core->stats_listen_destroyed++;
1902 cm_core->stats_listen_nodes_destroyed++;
1908 if (atomic_read(&listener->pend_accepts_cnt) > 0)
1909 i40iw_debug(cm_core->dev,
1911 "%s: listener (%p) pending accepts=%u\n",
1914 atomic_read(&listener->pend_accepts_cnt));
1921 * i40iw_cm_del_listen - delete a linstener
1922 * @cm_core: cm's core
1923 * @listener: passive connection's listener
1924 * @apbvt_del: flag to delete apbvt
1926 static int i40iw_cm_del_listen(struct i40iw_cm_core *cm_core,
1927 struct i40iw_cm_listener *listener,
1930 listener->listener_state = I40IW_CM_LISTENER_PASSIVE_STATE;
1931 listener->cm_id = NULL; /* going to be destroyed pretty soon */
1932 return i40iw_dec_refcnt_listen(cm_core, listener, 1, apbvt_del);
1936 * i40iw_addr_resolve_neigh - resolve neighbor address
1937 * @iwdev: iwarp device structure
1938 * @src_ip: local ip address
1939 * @dst_ip: remote ip address
1940 * @arpindex: if there is an arp entry
1942 static int i40iw_addr_resolve_neigh(struct i40iw_device *iwdev,
1948 struct neighbour *neigh;
1950 struct net_device *netdev = iwdev->netdev;
1951 __be32 dst_ipaddr = htonl(dst_ip);
1952 __be32 src_ipaddr = htonl(src_ip);
1954 rt = ip_route_output(&init_net, dst_ipaddr, src_ipaddr, 0, 0);
1956 i40iw_pr_err("ip_route_output\n");
1960 if (netif_is_bond_slave(netdev))
1961 netdev = netdev_master_upper_dev_get(netdev);
1963 neigh = dst_neigh_lookup(&rt->dst, &dst_ipaddr);
1967 if (neigh->nud_state & NUD_VALID) {
1968 if (arpindex >= 0) {
1969 if (ether_addr_equal(iwdev->arp_table[arpindex].mac_addr,
1971 /* Mac address same as arp table */
1972 goto resolve_neigh_exit;
1973 i40iw_manage_arp_cache(iwdev,
1974 iwdev->arp_table[arpindex].mac_addr,
1980 i40iw_manage_arp_cache(iwdev, neigh->ha, &dst_ip, true, I40IW_ARP_ADD);
1981 rc = i40iw_arp_table(iwdev, &dst_ip, true, NULL, I40IW_ARP_RESOLVE);
1983 neigh_event_send(neigh, NULL);
1990 neigh_release(neigh);
1997 * i40iw_get_dst_ipv6
1999 static struct dst_entry *i40iw_get_dst_ipv6(struct sockaddr_in6 *src_addr,
2000 struct sockaddr_in6 *dst_addr)
2002 struct dst_entry *dst;
2005 memset(&fl6, 0, sizeof(fl6));
2006 fl6.daddr = dst_addr->sin6_addr;
2007 fl6.saddr = src_addr->sin6_addr;
2008 if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
2009 fl6.flowi6_oif = dst_addr->sin6_scope_id;
2011 dst = ip6_route_output(&init_net, NULL, &fl6);
2016 * i40iw_addr_resolve_neigh_ipv6 - resolve neighbor ipv6 address
2017 * @iwdev: iwarp device structure
2018 * @dst_ip: remote ip address
2019 * @arpindex: if there is an arp entry
2021 static int i40iw_addr_resolve_neigh_ipv6(struct i40iw_device *iwdev,
2026 struct neighbour *neigh;
2028 struct net_device *netdev = iwdev->netdev;
2029 struct dst_entry *dst;
2030 struct sockaddr_in6 dst_addr;
2031 struct sockaddr_in6 src_addr;
2033 memset(&dst_addr, 0, sizeof(dst_addr));
2034 dst_addr.sin6_family = AF_INET6;
2035 i40iw_copy_ip_htonl(dst_addr.sin6_addr.in6_u.u6_addr32, dest);
2036 memset(&src_addr, 0, sizeof(src_addr));
2037 src_addr.sin6_family = AF_INET6;
2038 i40iw_copy_ip_htonl(src_addr.sin6_addr.in6_u.u6_addr32, src);
2039 dst = i40iw_get_dst_ipv6(&src_addr, &dst_addr);
2040 if (!dst || dst->error) {
2043 i40iw_pr_err("ip6_route_output returned dst->error = %d\n",
2049 if (netif_is_bond_slave(netdev))
2050 netdev = netdev_master_upper_dev_get(netdev);
2052 neigh = dst_neigh_lookup(dst, &dst_addr);
2056 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_CM, "dst_neigh_lookup MAC=%pM\n", neigh->ha);
2057 if (neigh->nud_state & NUD_VALID) {
2058 if (arpindex >= 0) {
2059 if (ether_addr_equal
2060 (iwdev->arp_table[arpindex].mac_addr,
2062 /* Mac address same as in arp table */
2063 goto resolve_neigh_exit6;
2065 i40iw_manage_arp_cache(iwdev,
2066 iwdev->arp_table[arpindex].mac_addr,
2071 i40iw_manage_arp_cache(iwdev,
2076 rc = i40iw_arp_table(iwdev,
2082 neigh_event_send(neigh, NULL);
2086 resolve_neigh_exit6:
2089 neigh_release(neigh);
2095 * i40iw_ipv4_is_loopback - check if loopback
2096 * @loc_addr: local addr to compare
2097 * @rem_addr: remote address
2099 static bool i40iw_ipv4_is_loopback(u32 loc_addr, u32 rem_addr)
2101 return ipv4_is_loopback(htonl(rem_addr)) || (loc_addr == rem_addr);
2105 * i40iw_ipv6_is_loopback - check if loopback
2106 * @loc_addr: local addr to compare
2107 * @rem_addr: remote address
2109 static bool i40iw_ipv6_is_loopback(u32 *loc_addr, u32 *rem_addr)
2111 struct in6_addr raddr6;
2113 i40iw_copy_ip_htonl(raddr6.in6_u.u6_addr32, rem_addr);
2114 return !memcmp(loc_addr, rem_addr, 16) || ipv6_addr_loopback(&raddr6);
2118 * i40iw_make_cm_node - create a new instance of a cm node
2119 * @cm_core: cm's core
2120 * @iwdev: iwarp device structure
2121 * @cm_info: quad info for connection
2122 * @listener: passive connection's listener
2124 static struct i40iw_cm_node *i40iw_make_cm_node(
2125 struct i40iw_cm_core *cm_core,
2126 struct i40iw_device *iwdev,
2127 struct i40iw_cm_info *cm_info,
2128 struct i40iw_cm_listener *listener)
2130 struct i40iw_cm_node *cm_node;
2134 struct net_device *netdev = iwdev->netdev;
2136 /* create an hte and cm_node for this instance */
2137 cm_node = kzalloc(sizeof(*cm_node), GFP_ATOMIC);
2141 /* set our node specific transport info */
2142 cm_node->ipv4 = cm_info->ipv4;
2143 cm_node->vlan_id = cm_info->vlan_id;
2144 if ((cm_node->vlan_id == I40IW_NO_VLAN) && iwdev->dcb)
2145 cm_node->vlan_id = 0;
2146 cm_node->tos = cm_info->tos;
2147 cm_node->user_pri = cm_info->user_pri;
2149 if (listener->tos != cm_info->tos)
2150 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_DCB,
2151 "application TOS[%d] and remote client TOS[%d] mismatch\n",
2152 listener->tos, cm_info->tos);
2153 cm_node->tos = max(listener->tos, cm_info->tos);
2154 cm_node->user_pri = rt_tos2priority(cm_node->tos);
2155 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_DCB, "listener: TOS:[%d] UP:[%d]\n",
2156 cm_node->tos, cm_node->user_pri);
2158 memcpy(cm_node->loc_addr, cm_info->loc_addr, sizeof(cm_node->loc_addr));
2159 memcpy(cm_node->rem_addr, cm_info->rem_addr, sizeof(cm_node->rem_addr));
2160 cm_node->loc_port = cm_info->loc_port;
2161 cm_node->rem_port = cm_info->rem_port;
2163 cm_node->mpa_frame_rev = iwdev->mpa_version;
2164 cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO;
2165 cm_node->ird_size = I40IW_MAX_IRD_SIZE;
2166 cm_node->ord_size = I40IW_MAX_ORD_SIZE;
2168 cm_node->listener = listener;
2169 cm_node->cm_id = cm_info->cm_id;
2170 ether_addr_copy(cm_node->loc_mac, netdev->dev_addr);
2171 spin_lock_init(&cm_node->retrans_list_lock);
2173 atomic_set(&cm_node->ref_count, 1);
2174 /* associate our parent CM core */
2175 cm_node->cm_core = cm_core;
2176 cm_node->tcp_cntxt.loc_id = I40IW_CM_DEF_LOCAL_ID;
2177 cm_node->tcp_cntxt.rcv_wscale = I40IW_CM_DEFAULT_RCV_WND_SCALE;
2178 cm_node->tcp_cntxt.rcv_wnd =
2179 I40IW_CM_DEFAULT_RCV_WND_SCALED >> I40IW_CM_DEFAULT_RCV_WND_SCALE;
2180 ts = current_kernel_time();
2181 cm_node->tcp_cntxt.loc_seq_num = ts.tv_nsec;
2182 cm_node->tcp_cntxt.mss = iwdev->mss;
2184 cm_node->iwdev = iwdev;
2185 cm_node->dev = &iwdev->sc_dev;
2187 if ((cm_node->ipv4 &&
2188 i40iw_ipv4_is_loopback(cm_node->loc_addr[0], cm_node->rem_addr[0])) ||
2189 (!cm_node->ipv4 && i40iw_ipv6_is_loopback(cm_node->loc_addr,
2190 cm_node->rem_addr))) {
2191 arpindex = i40iw_arp_table(iwdev,
2197 oldarpindex = i40iw_arp_table(iwdev,
2203 arpindex = i40iw_addr_resolve_neigh(iwdev,
2204 cm_info->loc_addr[0],
2205 cm_info->rem_addr[0],
2207 else if (IS_ENABLED(CONFIG_IPV6))
2208 arpindex = i40iw_addr_resolve_neigh_ipv6(iwdev,
2216 i40iw_pr_err("cm_node arpindex\n");
2220 ether_addr_copy(cm_node->rem_mac, iwdev->arp_table[arpindex].mac_addr);
2221 i40iw_add_hte_node(cm_core, cm_node);
2222 cm_core->stats_nodes_created++;
2227 * i40iw_rem_ref_cm_node - destroy an instance of a cm node
2228 * @cm_node: connection's node
2230 static void i40iw_rem_ref_cm_node(struct i40iw_cm_node *cm_node)
2232 struct i40iw_cm_core *cm_core = cm_node->cm_core;
2233 struct i40iw_qp *iwqp;
2234 struct i40iw_cm_info nfo;
2235 unsigned long flags;
2237 spin_lock_irqsave(&cm_node->cm_core->ht_lock, flags);
2238 if (atomic_dec_return(&cm_node->ref_count)) {
2239 spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags);
2242 list_del(&cm_node->list);
2243 spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags);
2245 /* if the node is destroyed before connection was accelerated */
2246 if (!cm_node->accelerated && cm_node->accept_pend) {
2247 pr_err("node destroyed before established\n");
2248 atomic_dec(&cm_node->listener->pend_accepts_cnt);
2250 if (cm_node->close_entry)
2251 i40iw_handle_close_entry(cm_node, 0);
2252 if (cm_node->listener) {
2253 i40iw_dec_refcnt_listen(cm_core, cm_node->listener, 0, true);
2255 if (!i40iw_listen_port_in_use(cm_core, cm_node->loc_port) &&
2256 cm_node->apbvt_set) {
2257 i40iw_manage_apbvt(cm_node->iwdev,
2259 I40IW_MANAGE_APBVT_DEL);
2260 i40iw_get_addr_info(cm_node, &nfo);
2261 if (cm_node->qhash_set) {
2262 i40iw_manage_qhash(cm_node->iwdev,
2264 I40IW_QHASH_TYPE_TCP_ESTABLISHED,
2265 I40IW_QHASH_MANAGE_TYPE_DELETE,
2268 cm_node->qhash_set = 0;
2273 iwqp = cm_node->iwqp;
2275 iwqp->cm_node = NULL;
2276 i40iw_rem_ref(&iwqp->ibqp);
2277 cm_node->iwqp = NULL;
2278 } else if (cm_node->qhash_set) {
2279 i40iw_get_addr_info(cm_node, &nfo);
2280 i40iw_manage_qhash(cm_node->iwdev,
2282 I40IW_QHASH_TYPE_TCP_ESTABLISHED,
2283 I40IW_QHASH_MANAGE_TYPE_DELETE,
2286 cm_node->qhash_set = 0;
2289 cm_node->cm_core->stats_nodes_destroyed++;
2294 * i40iw_handle_fin_pkt - FIN packet received
2295 * @cm_node: connection's node
2297 static void i40iw_handle_fin_pkt(struct i40iw_cm_node *cm_node)
2301 switch (cm_node->state) {
2302 case I40IW_CM_STATE_SYN_RCVD:
2303 case I40IW_CM_STATE_SYN_SENT:
2304 case I40IW_CM_STATE_ESTABLISHED:
2305 case I40IW_CM_STATE_MPAREJ_RCVD:
2306 cm_node->tcp_cntxt.rcv_nxt++;
2307 i40iw_cleanup_retrans_entry(cm_node);
2308 cm_node->state = I40IW_CM_STATE_LAST_ACK;
2309 i40iw_send_fin(cm_node);
2311 case I40IW_CM_STATE_MPAREQ_SENT:
2312 i40iw_create_event(cm_node, I40IW_CM_EVENT_ABORTED);
2313 cm_node->tcp_cntxt.rcv_nxt++;
2314 i40iw_cleanup_retrans_entry(cm_node);
2315 cm_node->state = I40IW_CM_STATE_CLOSED;
2316 atomic_inc(&cm_node->ref_count);
2317 i40iw_send_reset(cm_node);
2319 case I40IW_CM_STATE_FIN_WAIT1:
2320 cm_node->tcp_cntxt.rcv_nxt++;
2321 i40iw_cleanup_retrans_entry(cm_node);
2322 cm_node->state = I40IW_CM_STATE_CLOSING;
2323 i40iw_send_ack(cm_node);
2325 * Wait for ACK as this is simultaneous close.
2326 * After we receive ACK, do not send anything.
2330 case I40IW_CM_STATE_FIN_WAIT2:
2331 cm_node->tcp_cntxt.rcv_nxt++;
2332 i40iw_cleanup_retrans_entry(cm_node);
2333 cm_node->state = I40IW_CM_STATE_TIME_WAIT;
2334 i40iw_send_ack(cm_node);
2336 i40iw_schedule_cm_timer(cm_node, NULL, I40IW_TIMER_TYPE_CLOSE, 1, 0);
2338 i40iw_pr_err("node %p state = %d\n", cm_node, cm_node->state);
2340 case I40IW_CM_STATE_TIME_WAIT:
2341 cm_node->tcp_cntxt.rcv_nxt++;
2342 i40iw_cleanup_retrans_entry(cm_node);
2343 cm_node->state = I40IW_CM_STATE_CLOSED;
2344 i40iw_rem_ref_cm_node(cm_node);
2346 case I40IW_CM_STATE_OFFLOADED:
2348 i40iw_pr_err("bad state node %p state = %d\n", cm_node, cm_node->state);
2354 * i40iw_handle_rst_pkt - process received RST packet
2355 * @cm_node: connection's node
2356 * @rbuf: receive buffer
2358 static void i40iw_handle_rst_pkt(struct i40iw_cm_node *cm_node,
2359 struct i40iw_puda_buf *rbuf)
2361 i40iw_cleanup_retrans_entry(cm_node);
2362 switch (cm_node->state) {
2363 case I40IW_CM_STATE_SYN_SENT:
2364 case I40IW_CM_STATE_MPAREQ_SENT:
2365 switch (cm_node->mpa_frame_rev) {
2367 cm_node->mpa_frame_rev = IETF_MPA_V1;
2368 /* send a syn and goto syn sent state */
2369 cm_node->state = I40IW_CM_STATE_SYN_SENT;
2370 if (i40iw_send_syn(cm_node, 0))
2371 i40iw_active_open_err(cm_node, false);
2375 i40iw_active_open_err(cm_node, false);
2379 case I40IW_CM_STATE_MPAREQ_RCVD:
2380 atomic_add_return(1, &cm_node->passive_state);
2382 case I40IW_CM_STATE_ESTABLISHED:
2383 case I40IW_CM_STATE_SYN_RCVD:
2384 case I40IW_CM_STATE_LISTENING:
2385 i40iw_pr_err("Bad state state = %d\n", cm_node->state);
2386 i40iw_passive_open_err(cm_node, false);
2388 case I40IW_CM_STATE_OFFLOADED:
2389 i40iw_active_open_err(cm_node, false);
2391 case I40IW_CM_STATE_CLOSED:
2393 case I40IW_CM_STATE_FIN_WAIT2:
2394 case I40IW_CM_STATE_FIN_WAIT1:
2395 case I40IW_CM_STATE_LAST_ACK:
2396 cm_node->cm_id->rem_ref(cm_node->cm_id);
2397 case I40IW_CM_STATE_TIME_WAIT:
2398 cm_node->state = I40IW_CM_STATE_CLOSED;
2399 i40iw_rem_ref_cm_node(cm_node);
2407 * i40iw_handle_rcv_mpa - Process a recv'd mpa buffer
2408 * @cm_node: connection's node
2409 * @rbuf: receive buffer
2411 static void i40iw_handle_rcv_mpa(struct i40iw_cm_node *cm_node,
2412 struct i40iw_puda_buf *rbuf)
2415 int datasize = rbuf->datalen;
2416 u8 *dataloc = rbuf->data;
2418 enum i40iw_cm_event_type type = I40IW_CM_EVENT_UNKNOWN;
2421 ret = i40iw_parse_mpa(cm_node, dataloc, &res_type, datasize);
2423 if (cm_node->state == I40IW_CM_STATE_MPAREQ_SENT)
2424 i40iw_active_open_err(cm_node, true);
2426 i40iw_passive_open_err(cm_node, true);
2430 switch (cm_node->state) {
2431 case I40IW_CM_STATE_ESTABLISHED:
2432 if (res_type == I40IW_MPA_REQUEST_REJECT)
2433 i40iw_pr_err("state for reject\n");
2434 cm_node->state = I40IW_CM_STATE_MPAREQ_RCVD;
2435 type = I40IW_CM_EVENT_MPA_REQ;
2436 i40iw_send_ack(cm_node); /* ACK received MPA request */
2437 atomic_set(&cm_node->passive_state,
2438 I40IW_PASSIVE_STATE_INDICATED);
2440 case I40IW_CM_STATE_MPAREQ_SENT:
2441 i40iw_cleanup_retrans_entry(cm_node);
2442 if (res_type == I40IW_MPA_REQUEST_REJECT) {
2443 type = I40IW_CM_EVENT_MPA_REJECT;
2444 cm_node->state = I40IW_CM_STATE_MPAREJ_RCVD;
2446 type = I40IW_CM_EVENT_CONNECTED;
2447 cm_node->state = I40IW_CM_STATE_OFFLOADED;
2448 i40iw_send_ack(cm_node);
2452 pr_err("%s wrong cm_node state =%d\n", __func__, cm_node->state);
2455 i40iw_create_event(cm_node, type);
2459 * i40iw_indicate_pkt_err - Send up err event to cm
2460 * @cm_node: connection's node
2462 static void i40iw_indicate_pkt_err(struct i40iw_cm_node *cm_node)
2464 switch (cm_node->state) {
2465 case I40IW_CM_STATE_SYN_SENT:
2466 case I40IW_CM_STATE_MPAREQ_SENT:
2467 i40iw_active_open_err(cm_node, true);
2469 case I40IW_CM_STATE_ESTABLISHED:
2470 case I40IW_CM_STATE_SYN_RCVD:
2471 i40iw_passive_open_err(cm_node, true);
2473 case I40IW_CM_STATE_OFFLOADED:
2480 * i40iw_check_syn - Check for error on received syn ack
2481 * @cm_node: connection's node
2482 * @tcph: pointer tcp header
2484 static int i40iw_check_syn(struct i40iw_cm_node *cm_node, struct tcphdr *tcph)
2488 if (ntohl(tcph->ack_seq) != cm_node->tcp_cntxt.loc_seq_num) {
2490 i40iw_active_open_err(cm_node, true);
2496 * i40iw_check_seq - check seq numbers if OK
2497 * @cm_node: connection's node
2498 * @tcph: pointer tcp header
2500 static int i40iw_check_seq(struct i40iw_cm_node *cm_node, struct tcphdr *tcph)
2505 u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num;
2506 u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt;
2509 seq = ntohl(tcph->seq);
2510 ack_seq = ntohl(tcph->ack_seq);
2511 rcv_wnd = cm_node->tcp_cntxt.rcv_wnd;
2512 if (ack_seq != loc_seq_num)
2514 else if (!between(seq, rcv_nxt, (rcv_nxt + rcv_wnd)))
2517 i40iw_pr_err("seq number\n");
2518 i40iw_indicate_pkt_err(cm_node);
2524 * i40iw_handle_syn_pkt - is for Passive node
2525 * @cm_node: connection's node
2526 * @rbuf: receive buffer
2528 static void i40iw_handle_syn_pkt(struct i40iw_cm_node *cm_node,
2529 struct i40iw_puda_buf *rbuf)
2531 struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
2535 struct i40iw_cm_info nfo;
2537 optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
2538 inc_sequence = ntohl(tcph->seq);
2540 switch (cm_node->state) {
2541 case I40IW_CM_STATE_SYN_SENT:
2542 case I40IW_CM_STATE_MPAREQ_SENT:
2543 /* Rcvd syn on active open connection */
2544 i40iw_active_open_err(cm_node, 1);
2546 case I40IW_CM_STATE_LISTENING:
2548 if (atomic_read(&cm_node->listener->pend_accepts_cnt) >
2549 cm_node->listener->backlog) {
2550 cm_node->cm_core->stats_backlog_drops++;
2551 i40iw_passive_open_err(cm_node, false);
2554 ret = i40iw_handle_tcp_options(cm_node, tcph, optionsize, 1);
2556 i40iw_passive_open_err(cm_node, false);
2560 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
2561 cm_node->accept_pend = 1;
2562 atomic_inc(&cm_node->listener->pend_accepts_cnt);
2564 cm_node->state = I40IW_CM_STATE_SYN_RCVD;
2565 i40iw_get_addr_info(cm_node, &nfo);
2566 ret = i40iw_manage_qhash(cm_node->iwdev,
2568 I40IW_QHASH_TYPE_TCP_ESTABLISHED,
2569 I40IW_QHASH_MANAGE_TYPE_ADD,
2572 cm_node->qhash_set = true;
2574 case I40IW_CM_STATE_CLOSED:
2575 i40iw_cleanup_retrans_entry(cm_node);
2576 atomic_inc(&cm_node->ref_count);
2577 i40iw_send_reset(cm_node);
2579 case I40IW_CM_STATE_OFFLOADED:
2580 case I40IW_CM_STATE_ESTABLISHED:
2581 case I40IW_CM_STATE_FIN_WAIT1:
2582 case I40IW_CM_STATE_FIN_WAIT2:
2583 case I40IW_CM_STATE_MPAREQ_RCVD:
2584 case I40IW_CM_STATE_LAST_ACK:
2585 case I40IW_CM_STATE_CLOSING:
2586 case I40IW_CM_STATE_UNKNOWN:
2593 * i40iw_handle_synack_pkt - Process SYN+ACK packet (active side)
2594 * @cm_node: connection's node
2595 * @rbuf: receive buffer
2597 static void i40iw_handle_synack_pkt(struct i40iw_cm_node *cm_node,
2598 struct i40iw_puda_buf *rbuf)
2600 struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
2605 optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
2606 inc_sequence = ntohl(tcph->seq);
2607 switch (cm_node->state) {
2608 case I40IW_CM_STATE_SYN_SENT:
2609 i40iw_cleanup_retrans_entry(cm_node);
2611 if (i40iw_check_syn(cm_node, tcph)) {
2612 i40iw_pr_err("check syn fail\n");
2615 cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
2617 ret = i40iw_handle_tcp_options(cm_node, tcph, optionsize, 0);
2619 i40iw_debug(cm_node->dev,
2621 "cm_node=%p tcp_options failed\n",
2625 i40iw_cleanup_retrans_entry(cm_node);
2626 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
2627 i40iw_send_ack(cm_node); /* ACK for the syn_ack */
2628 ret = i40iw_send_mpa_request(cm_node);
2630 i40iw_debug(cm_node->dev,
2632 "cm_node=%p i40iw_send_mpa_request failed\n",
2636 cm_node->state = I40IW_CM_STATE_MPAREQ_SENT;
2638 case I40IW_CM_STATE_MPAREQ_RCVD:
2639 i40iw_passive_open_err(cm_node, true);
2641 case I40IW_CM_STATE_LISTENING:
2642 cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
2643 i40iw_cleanup_retrans_entry(cm_node);
2644 cm_node->state = I40IW_CM_STATE_CLOSED;
2645 i40iw_send_reset(cm_node);
2647 case I40IW_CM_STATE_CLOSED:
2648 cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
2649 i40iw_cleanup_retrans_entry(cm_node);
2650 atomic_inc(&cm_node->ref_count);
2651 i40iw_send_reset(cm_node);
2653 case I40IW_CM_STATE_ESTABLISHED:
2654 case I40IW_CM_STATE_FIN_WAIT1:
2655 case I40IW_CM_STATE_FIN_WAIT2:
2656 case I40IW_CM_STATE_LAST_ACK:
2657 case I40IW_CM_STATE_OFFLOADED:
2658 case I40IW_CM_STATE_CLOSING:
2659 case I40IW_CM_STATE_UNKNOWN:
2660 case I40IW_CM_STATE_MPAREQ_SENT:
2667 * i40iw_handle_ack_pkt - process packet with ACK
2668 * @cm_node: connection's node
2669 * @rbuf: receive buffer
2671 static int i40iw_handle_ack_pkt(struct i40iw_cm_node *cm_node,
2672 struct i40iw_puda_buf *rbuf)
2674 struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
2678 u32 datasize = rbuf->datalen;
2680 optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
2682 if (i40iw_check_seq(cm_node, tcph))
2685 inc_sequence = ntohl(tcph->seq);
2686 switch (cm_node->state) {
2687 case I40IW_CM_STATE_SYN_RCVD:
2688 i40iw_cleanup_retrans_entry(cm_node);
2689 ret = i40iw_handle_tcp_options(cm_node, tcph, optionsize, 1);
2692 cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
2693 cm_node->state = I40IW_CM_STATE_ESTABLISHED;
2695 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
2696 i40iw_handle_rcv_mpa(cm_node, rbuf);
2699 case I40IW_CM_STATE_ESTABLISHED:
2700 i40iw_cleanup_retrans_entry(cm_node);
2702 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
2703 i40iw_handle_rcv_mpa(cm_node, rbuf);
2706 case I40IW_CM_STATE_MPAREQ_SENT:
2707 cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
2709 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
2710 i40iw_handle_rcv_mpa(cm_node, rbuf);
2713 case I40IW_CM_STATE_LISTENING:
2714 i40iw_cleanup_retrans_entry(cm_node);
2715 cm_node->state = I40IW_CM_STATE_CLOSED;
2716 i40iw_send_reset(cm_node);
2718 case I40IW_CM_STATE_CLOSED:
2719 i40iw_cleanup_retrans_entry(cm_node);
2720 atomic_inc(&cm_node->ref_count);
2721 i40iw_send_reset(cm_node);
2723 case I40IW_CM_STATE_LAST_ACK:
2724 case I40IW_CM_STATE_CLOSING:
2725 i40iw_cleanup_retrans_entry(cm_node);
2726 cm_node->state = I40IW_CM_STATE_CLOSED;
2727 if (!cm_node->accept_pend)
2728 cm_node->cm_id->rem_ref(cm_node->cm_id);
2729 i40iw_rem_ref_cm_node(cm_node);
2731 case I40IW_CM_STATE_FIN_WAIT1:
2732 i40iw_cleanup_retrans_entry(cm_node);
2733 cm_node->state = I40IW_CM_STATE_FIN_WAIT2;
2735 case I40IW_CM_STATE_SYN_SENT:
2736 case I40IW_CM_STATE_FIN_WAIT2:
2737 case I40IW_CM_STATE_OFFLOADED:
2738 case I40IW_CM_STATE_MPAREQ_RCVD:
2739 case I40IW_CM_STATE_UNKNOWN:
2741 i40iw_cleanup_retrans_entry(cm_node);
2748 * i40iw_process_packet - process cm packet
2749 * @cm_node: connection's node
2750 * @rbuf: receive buffer
2752 static void i40iw_process_packet(struct i40iw_cm_node *cm_node,
2753 struct i40iw_puda_buf *rbuf)
2755 enum i40iw_tcpip_pkt_type pkt_type = I40IW_PKT_TYPE_UNKNOWN;
2756 struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
2761 pkt_type = I40IW_PKT_TYPE_RST;
2762 } else if (tcph->syn) {
2763 pkt_type = I40IW_PKT_TYPE_SYN;
2765 pkt_type = I40IW_PKT_TYPE_SYNACK;
2766 } else if (tcph->ack) {
2767 pkt_type = I40IW_PKT_TYPE_ACK;
2773 case I40IW_PKT_TYPE_SYN:
2774 i40iw_handle_syn_pkt(cm_node, rbuf);
2776 case I40IW_PKT_TYPE_SYNACK:
2777 i40iw_handle_synack_pkt(cm_node, rbuf);
2779 case I40IW_PKT_TYPE_ACK:
2780 ret = i40iw_handle_ack_pkt(cm_node, rbuf);
2781 if (fin_set && !ret)
2782 i40iw_handle_fin_pkt(cm_node);
2784 case I40IW_PKT_TYPE_RST:
2785 i40iw_handle_rst_pkt(cm_node, rbuf);
2789 (!i40iw_check_seq(cm_node, (struct tcphdr *)rbuf->tcph)))
2790 i40iw_handle_fin_pkt(cm_node);
2796 * i40iw_make_listen_node - create a listen node with params
2797 * @cm_core: cm's core
2798 * @iwdev: iwarp device structure
2799 * @cm_info: quad info for connection
2801 static struct i40iw_cm_listener *i40iw_make_listen_node(
2802 struct i40iw_cm_core *cm_core,
2803 struct i40iw_device *iwdev,
2804 struct i40iw_cm_info *cm_info)
2806 struct i40iw_cm_listener *listener;
2807 unsigned long flags;
2809 /* cannot have multiple matching listeners */
2810 listener = i40iw_find_listener(cm_core, cm_info->loc_addr,
2813 I40IW_CM_LISTENER_EITHER_STATE);
2815 (listener->listener_state == I40IW_CM_LISTENER_ACTIVE_STATE)) {
2816 atomic_dec(&listener->ref_count);
2817 i40iw_debug(cm_core->dev,
2819 "Not creating listener since it already exists\n");
2824 /* create a CM listen node (1/2 node to compare incoming traffic to) */
2825 listener = kzalloc(sizeof(*listener), GFP_ATOMIC);
2828 cm_core->stats_listen_nodes_created++;
2829 memcpy(listener->loc_addr, cm_info->loc_addr, sizeof(listener->loc_addr));
2830 listener->loc_port = cm_info->loc_port;
2832 INIT_LIST_HEAD(&listener->child_listen_list);
2834 atomic_set(&listener->ref_count, 1);
2836 listener->reused_node = 1;
2839 listener->cm_id = cm_info->cm_id;
2840 listener->ipv4 = cm_info->ipv4;
2841 listener->vlan_id = cm_info->vlan_id;
2842 atomic_set(&listener->pend_accepts_cnt, 0);
2843 listener->cm_core = cm_core;
2844 listener->iwdev = iwdev;
2846 listener->backlog = cm_info->backlog;
2847 listener->listener_state = I40IW_CM_LISTENER_ACTIVE_STATE;
2849 if (!listener->reused_node) {
2850 spin_lock_irqsave(&cm_core->listen_list_lock, flags);
2851 list_add(&listener->list, &cm_core->listen_nodes);
2852 spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
2859 * i40iw_create_cm_node - make a connection node with params
2860 * @cm_core: cm's core
2861 * @iwdev: iwarp device structure
2862 * @private_data_len: len to provate data for mpa request
2863 * @private_data: pointer to private data for connection
2864 * @cm_info: quad info for connection
2866 static struct i40iw_cm_node *i40iw_create_cm_node(
2867 struct i40iw_cm_core *cm_core,
2868 struct i40iw_device *iwdev,
2869 u16 private_data_len,
2871 struct i40iw_cm_info *cm_info)
2873 struct i40iw_cm_node *cm_node;
2874 struct i40iw_cm_listener *loopback_remotelistener;
2875 struct i40iw_cm_node *loopback_remotenode;
2876 struct i40iw_cm_info loopback_cm_info;
2878 /* create a CM connection node */
2879 cm_node = i40iw_make_cm_node(cm_core, iwdev, cm_info, NULL);
2881 return ERR_PTR(-ENOMEM);
2882 /* set our node side to client (active) side */
2883 cm_node->tcp_cntxt.client = 1;
2884 cm_node->tcp_cntxt.rcv_wscale = I40IW_CM_DEFAULT_RCV_WND_SCALE;
2886 if (!memcmp(cm_info->loc_addr, cm_info->rem_addr, sizeof(cm_info->loc_addr))) {
2887 loopback_remotelistener = i40iw_find_listener(
2892 I40IW_CM_LISTENER_ACTIVE_STATE);
2893 if (!loopback_remotelistener) {
2894 i40iw_rem_ref_cm_node(cm_node);
2895 return ERR_PTR(-ECONNREFUSED);
2897 loopback_cm_info = *cm_info;
2898 loopback_cm_info.loc_port = cm_info->rem_port;
2899 loopback_cm_info.rem_port = cm_info->loc_port;
2900 loopback_cm_info.cm_id = loopback_remotelistener->cm_id;
2901 loopback_cm_info.ipv4 = cm_info->ipv4;
2902 loopback_remotenode = i40iw_make_cm_node(cm_core,
2905 loopback_remotelistener);
2906 if (!loopback_remotenode) {
2907 i40iw_rem_ref_cm_node(cm_node);
2908 return ERR_PTR(-ENOMEM);
2910 cm_core->stats_loopbacks++;
2911 loopback_remotenode->loopbackpartner = cm_node;
2912 loopback_remotenode->tcp_cntxt.rcv_wscale =
2913 I40IW_CM_DEFAULT_RCV_WND_SCALE;
2914 cm_node->loopbackpartner = loopback_remotenode;
2915 memcpy(loopback_remotenode->pdata_buf, private_data,
2917 loopback_remotenode->pdata.size = private_data_len;
2919 cm_node->state = I40IW_CM_STATE_OFFLOADED;
2920 cm_node->tcp_cntxt.rcv_nxt =
2921 loopback_remotenode->tcp_cntxt.loc_seq_num;
2922 loopback_remotenode->tcp_cntxt.rcv_nxt =
2923 cm_node->tcp_cntxt.loc_seq_num;
2924 cm_node->tcp_cntxt.max_snd_wnd =
2925 loopback_remotenode->tcp_cntxt.rcv_wnd;
2926 loopback_remotenode->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.rcv_wnd;
2927 cm_node->tcp_cntxt.snd_wnd = loopback_remotenode->tcp_cntxt.rcv_wnd;
2928 loopback_remotenode->tcp_cntxt.snd_wnd = cm_node->tcp_cntxt.rcv_wnd;
2929 cm_node->tcp_cntxt.snd_wscale = loopback_remotenode->tcp_cntxt.rcv_wscale;
2930 loopback_remotenode->tcp_cntxt.snd_wscale = cm_node->tcp_cntxt.rcv_wscale;
2931 loopback_remotenode->state = I40IW_CM_STATE_MPAREQ_RCVD;
2932 i40iw_create_event(loopback_remotenode, I40IW_CM_EVENT_MPA_REQ);
2937 cm_node->pdata.size = private_data_len;
2938 cm_node->pdata.addr = cm_node->pdata_buf;
2940 memcpy(cm_node->pdata_buf, private_data, private_data_len);
2942 cm_node->state = I40IW_CM_STATE_SYN_SENT;
2947 * i40iw_cm_reject - reject and teardown a connection
2948 * @cm_node: connection's node
2949 * @pdate: ptr to private data for reject
2950 * @plen: size of private data
2952 static int i40iw_cm_reject(struct i40iw_cm_node *cm_node, const void *pdata, u8 plen)
2957 struct iw_cm_id *cm_id = cm_node->cm_id;
2958 struct i40iw_cm_node *loopback = cm_node->loopbackpartner;
2960 if (cm_node->tcp_cntxt.client)
2962 i40iw_cleanup_retrans_entry(cm_node);
2965 passive_state = atomic_add_return(1, &cm_node->passive_state);
2966 if (passive_state == I40IW_SEND_RESET_EVENT) {
2967 cm_node->state = I40IW_CM_STATE_CLOSED;
2968 i40iw_rem_ref_cm_node(cm_node);
2970 if (cm_node->state == I40IW_CM_STATE_LISTENER_DESTROYED) {
2971 i40iw_rem_ref_cm_node(cm_node);
2973 ret = i40iw_send_mpa_reject(cm_node, pdata, plen);
2975 cm_node->state = I40IW_CM_STATE_CLOSED;
2976 err = i40iw_send_reset(cm_node);
2978 i40iw_pr_err("send reset failed\n");
2980 cm_id->add_ref(cm_id);
2985 cm_node->cm_id = NULL;
2986 if (cm_node->state == I40IW_CM_STATE_LISTENER_DESTROYED) {
2987 i40iw_rem_ref_cm_node(cm_node);
2988 i40iw_rem_ref_cm_node(loopback);
2990 ret = i40iw_send_cm_event(loopback,
2992 IW_CM_EVENT_CONNECT_REPLY,
2994 i40iw_rem_ref_cm_node(cm_node);
2995 loopback->state = I40IW_CM_STATE_CLOSING;
2997 cm_id = loopback->cm_id;
2998 i40iw_rem_ref_cm_node(loopback);
2999 cm_id->rem_ref(cm_id);
3007 * i40iw_cm_close - close of cm connection
3008 * @cm_node: connection's node
3010 static int i40iw_cm_close(struct i40iw_cm_node *cm_node)
3017 switch (cm_node->state) {
3018 case I40IW_CM_STATE_SYN_RCVD:
3019 case I40IW_CM_STATE_SYN_SENT:
3020 case I40IW_CM_STATE_ONE_SIDE_ESTABLISHED:
3021 case I40IW_CM_STATE_ESTABLISHED:
3022 case I40IW_CM_STATE_ACCEPTING:
3023 case I40IW_CM_STATE_MPAREQ_SENT:
3024 case I40IW_CM_STATE_MPAREQ_RCVD:
3025 i40iw_cleanup_retrans_entry(cm_node);
3026 i40iw_send_reset(cm_node);
3028 case I40IW_CM_STATE_CLOSE_WAIT:
3029 cm_node->state = I40IW_CM_STATE_LAST_ACK;
3030 i40iw_send_fin(cm_node);
3032 case I40IW_CM_STATE_FIN_WAIT1:
3033 case I40IW_CM_STATE_FIN_WAIT2:
3034 case I40IW_CM_STATE_LAST_ACK:
3035 case I40IW_CM_STATE_TIME_WAIT:
3036 case I40IW_CM_STATE_CLOSING:
3039 case I40IW_CM_STATE_LISTENING:
3040 i40iw_cleanup_retrans_entry(cm_node);
3041 i40iw_send_reset(cm_node);
3043 case I40IW_CM_STATE_MPAREJ_RCVD:
3044 case I40IW_CM_STATE_UNKNOWN:
3045 case I40IW_CM_STATE_INITED:
3046 case I40IW_CM_STATE_CLOSED:
3047 case I40IW_CM_STATE_LISTENER_DESTROYED:
3048 i40iw_rem_ref_cm_node(cm_node);
3050 case I40IW_CM_STATE_OFFLOADED:
3051 if (cm_node->send_entry)
3052 i40iw_pr_err("send_entry\n");
3053 i40iw_rem_ref_cm_node(cm_node);
3060 * i40iw_receive_ilq - recv an ETHERNET packet, and process it
3062 * @dev: FPK dev struct
3063 * @rbuf: receive buffer
3065 void i40iw_receive_ilq(struct i40iw_sc_dev *dev, struct i40iw_puda_buf *rbuf)
3067 struct i40iw_cm_node *cm_node;
3068 struct i40iw_cm_listener *listener;
3070 struct ipv6hdr *ip6h;
3071 struct tcphdr *tcph;
3072 struct i40iw_cm_info cm_info;
3073 struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
3074 struct i40iw_cm_core *cm_core = &iwdev->cm_core;
3075 struct vlan_ethhdr *ethh;
3078 /* if vlan, then maclen = 18 else 14 */
3079 iph = (struct iphdr *)rbuf->iph;
3080 memset(&cm_info, 0, sizeof(cm_info));
3082 i40iw_debug_buf(dev,
3084 "RECEIVE ILQ BUFFER",
3087 ethh = (struct vlan_ethhdr *)rbuf->mem.va;
3089 if (ethh->h_vlan_proto == htons(ETH_P_8021Q)) {
3090 vtag = ntohs(ethh->h_vlan_TCI);
3091 cm_info.user_pri = (vtag & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
3092 cm_info.vlan_id = vtag & VLAN_VID_MASK;
3093 i40iw_debug(cm_core->dev,
3099 cm_info.vlan_id = I40IW_NO_VLAN;
3101 tcph = (struct tcphdr *)rbuf->tcph;
3104 cm_info.loc_addr[0] = ntohl(iph->daddr);
3105 cm_info.rem_addr[0] = ntohl(iph->saddr);
3106 cm_info.ipv4 = true;
3107 cm_info.tos = iph->tos;
3109 ip6h = (struct ipv6hdr *)rbuf->iph;
3110 i40iw_copy_ip_ntohl(cm_info.loc_addr,
3111 ip6h->daddr.in6_u.u6_addr32);
3112 i40iw_copy_ip_ntohl(cm_info.rem_addr,
3113 ip6h->saddr.in6_u.u6_addr32);
3114 cm_info.ipv4 = false;
3115 cm_info.tos = (ip6h->priority << 4) | (ip6h->flow_lbl[0] >> 4);
3117 cm_info.loc_port = ntohs(tcph->dest);
3118 cm_info.rem_port = ntohs(tcph->source);
3119 cm_node = i40iw_find_node(cm_core,
3127 /* Only type of packet accepted are for */
3128 /* the PASSIVE open (syn only) */
3129 if (!tcph->syn || tcph->ack)
3132 i40iw_find_listener(cm_core,
3136 I40IW_CM_LISTENER_ACTIVE_STATE);
3138 cm_info.cm_id = NULL;
3139 i40iw_debug(cm_core->dev,
3141 "%s no listener found\n",
3145 cm_info.cm_id = listener->cm_id;
3146 cm_node = i40iw_make_cm_node(cm_core, iwdev, &cm_info, listener);
3148 i40iw_debug(cm_core->dev,
3150 "%s allocate node failed\n",
3152 atomic_dec(&listener->ref_count);
3155 if (!tcph->rst && !tcph->fin) {
3156 cm_node->state = I40IW_CM_STATE_LISTENING;
3158 i40iw_rem_ref_cm_node(cm_node);
3161 atomic_inc(&cm_node->ref_count);
3162 } else if (cm_node->state == I40IW_CM_STATE_OFFLOADED) {
3163 i40iw_rem_ref_cm_node(cm_node);
3166 i40iw_process_packet(cm_node, rbuf);
3167 i40iw_rem_ref_cm_node(cm_node);
3171 * i40iw_setup_cm_core - allocate a top level instance of a cm
3173 * @iwdev: iwarp device structure
3175 void i40iw_setup_cm_core(struct i40iw_device *iwdev)
3177 struct i40iw_cm_core *cm_core = &iwdev->cm_core;
3179 cm_core->iwdev = iwdev;
3180 cm_core->dev = &iwdev->sc_dev;
3182 INIT_LIST_HEAD(&cm_core->connected_nodes);
3183 INIT_LIST_HEAD(&cm_core->listen_nodes);
3185 init_timer(&cm_core->tcp_timer);
3186 cm_core->tcp_timer.function = i40iw_cm_timer_tick;
3187 cm_core->tcp_timer.data = (unsigned long)cm_core;
3189 spin_lock_init(&cm_core->ht_lock);
3190 spin_lock_init(&cm_core->listen_list_lock);
3192 cm_core->event_wq = alloc_ordered_workqueue("iwewq",
3195 cm_core->disconn_wq = alloc_ordered_workqueue("iwdwq",
3200 * i40iw_cleanup_cm_core - deallocate a top level instance of a
3202 * @cm_core: cm's core
3204 void i40iw_cleanup_cm_core(struct i40iw_cm_core *cm_core)
3206 unsigned long flags;
3211 spin_lock_irqsave(&cm_core->ht_lock, flags);
3212 if (timer_pending(&cm_core->tcp_timer))
3213 del_timer_sync(&cm_core->tcp_timer);
3214 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
3216 destroy_workqueue(cm_core->event_wq);
3217 destroy_workqueue(cm_core->disconn_wq);
3221 * i40iw_init_tcp_ctx - setup qp context
3222 * @cm_node: connection's node
3223 * @tcp_info: offload info for tcp
3224 * @iwqp: associate qp for the connection
3226 static void i40iw_init_tcp_ctx(struct i40iw_cm_node *cm_node,
3227 struct i40iw_tcp_offload_info *tcp_info,
3228 struct i40iw_qp *iwqp)
3230 tcp_info->ipv4 = cm_node->ipv4;
3231 tcp_info->drop_ooo_seg = true;
3232 tcp_info->wscale = true;
3233 tcp_info->ignore_tcp_opt = true;
3234 tcp_info->ignore_tcp_uns_opt = true;
3235 tcp_info->no_nagle = false;
3237 tcp_info->ttl = I40IW_DEFAULT_TTL;
3238 tcp_info->rtt_var = cpu_to_le32(I40IW_DEFAULT_RTT_VAR);
3239 tcp_info->ss_thresh = cpu_to_le32(I40IW_DEFAULT_SS_THRESH);
3240 tcp_info->rexmit_thresh = I40IW_DEFAULT_REXMIT_THRESH;
3242 tcp_info->tcp_state = I40IW_TCP_STATE_ESTABLISHED;
3243 tcp_info->snd_wscale = cm_node->tcp_cntxt.snd_wscale;
3244 tcp_info->rcv_wscale = cm_node->tcp_cntxt.rcv_wscale;
3246 tcp_info->snd_nxt = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num);
3247 tcp_info->snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.snd_wnd);
3248 tcp_info->rcv_nxt = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt);
3249 tcp_info->snd_max = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num);
3251 tcp_info->snd_una = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num);
3252 tcp_info->cwnd = cpu_to_le32(2 * cm_node->tcp_cntxt.mss);
3253 tcp_info->snd_wl1 = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt);
3254 tcp_info->snd_wl2 = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num);
3255 tcp_info->max_snd_window = cpu_to_le32(cm_node->tcp_cntxt.max_snd_wnd);
3256 tcp_info->rcv_wnd = cpu_to_le32(cm_node->tcp_cntxt.rcv_wnd <<
3257 cm_node->tcp_cntxt.rcv_wscale);
3259 tcp_info->flow_label = 0;
3260 tcp_info->snd_mss = cpu_to_le32(((u32)cm_node->tcp_cntxt.mss));
3261 if (cm_node->vlan_id < VLAN_TAG_PRESENT) {
3262 tcp_info->insert_vlan_tag = true;
3263 tcp_info->vlan_tag = cpu_to_le16(cm_node->vlan_id);
3265 if (cm_node->ipv4) {
3266 tcp_info->src_port = cpu_to_le16(cm_node->loc_port);
3267 tcp_info->dst_port = cpu_to_le16(cm_node->rem_port);
3269 tcp_info->dest_ip_addr3 = cpu_to_le32(cm_node->rem_addr[0]);
3270 tcp_info->local_ipaddr3 = cpu_to_le32(cm_node->loc_addr[0]);
3272 cpu_to_le16((u16)i40iw_arp_table(
3274 &tcp_info->dest_ip_addr3,
3277 I40IW_ARP_RESOLVE));
3279 tcp_info->src_port = cpu_to_le16(cm_node->loc_port);
3280 tcp_info->dst_port = cpu_to_le16(cm_node->rem_port);
3281 tcp_info->dest_ip_addr0 = cpu_to_le32(cm_node->rem_addr[0]);
3282 tcp_info->dest_ip_addr1 = cpu_to_le32(cm_node->rem_addr[1]);
3283 tcp_info->dest_ip_addr2 = cpu_to_le32(cm_node->rem_addr[2]);
3284 tcp_info->dest_ip_addr3 = cpu_to_le32(cm_node->rem_addr[3]);
3285 tcp_info->local_ipaddr0 = cpu_to_le32(cm_node->loc_addr[0]);
3286 tcp_info->local_ipaddr1 = cpu_to_le32(cm_node->loc_addr[1]);
3287 tcp_info->local_ipaddr2 = cpu_to_le32(cm_node->loc_addr[2]);
3288 tcp_info->local_ipaddr3 = cpu_to_le32(cm_node->loc_addr[3]);
3290 cpu_to_le16((u16)i40iw_arp_table(
3292 &tcp_info->dest_ip_addr0,
3295 I40IW_ARP_RESOLVE));
3300 * i40iw_cm_init_tsa_conn - setup qp for RTS
3301 * @iwqp: associate qp for the connection
3302 * @cm_node: connection's node
3304 static void i40iw_cm_init_tsa_conn(struct i40iw_qp *iwqp,
3305 struct i40iw_cm_node *cm_node)
3307 struct i40iw_tcp_offload_info tcp_info;
3308 struct i40iwarp_offload_info *iwarp_info;
3309 struct i40iw_qp_host_ctx_info *ctx_info;
3310 struct i40iw_device *iwdev = iwqp->iwdev;
3311 struct i40iw_sc_dev *dev = &iwqp->iwdev->sc_dev;
3313 memset(&tcp_info, 0x00, sizeof(struct i40iw_tcp_offload_info));
3314 iwarp_info = &iwqp->iwarp_info;
3315 ctx_info = &iwqp->ctx_info;
3317 ctx_info->tcp_info = &tcp_info;
3318 ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
3319 ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
3321 iwarp_info->ord_size = cm_node->ord_size;
3322 iwarp_info->ird_size = i40iw_derive_hw_ird_setting(cm_node->ird_size);
3324 if (iwarp_info->ord_size == 1)
3325 iwarp_info->ord_size = 2;
3327 iwarp_info->rd_enable = true;
3328 iwarp_info->rdmap_ver = 1;
3329 iwarp_info->ddp_ver = 1;
3331 iwarp_info->pd_id = iwqp->iwpd->sc_pd.pd_id;
3333 ctx_info->tcp_info_valid = true;
3334 ctx_info->iwarp_info_valid = true;
3335 ctx_info->add_to_qoslist = true;
3336 ctx_info->user_pri = cm_node->user_pri;
3338 i40iw_init_tcp_ctx(cm_node, &tcp_info, iwqp);
3339 if (cm_node->snd_mark_en) {
3340 iwarp_info->snd_mark_en = true;
3341 iwarp_info->snd_mark_offset = (tcp_info.snd_nxt &
3342 SNDMARKER_SEQNMASK) + cm_node->lsmm_size;
3345 cm_node->state = I40IW_CM_STATE_OFFLOADED;
3346 tcp_info.tcp_state = I40IW_TCP_STATE_ESTABLISHED;
3347 tcp_info.src_mac_addr_idx = iwdev->mac_ip_table_idx;
3348 tcp_info.tos = cm_node->tos;
3350 dev->iw_priv_qp_ops->qp_setctx(&iwqp->sc_qp, (u64 *)(iwqp->host_ctx.va), ctx_info);
3352 /* once tcp_info is set, no need to do it again */
3353 ctx_info->tcp_info_valid = false;
3354 ctx_info->iwarp_info_valid = false;
3355 ctx_info->add_to_qoslist = false;
3359 * i40iw_cm_disconn - when a connection is being closed
3360 * @iwqp: associate qp for the connection
3362 int i40iw_cm_disconn(struct i40iw_qp *iwqp)
3364 struct disconn_work *work;
3365 struct i40iw_device *iwdev = iwqp->iwdev;
3366 struct i40iw_cm_core *cm_core = &iwdev->cm_core;
3368 work = kzalloc(sizeof(*work), GFP_ATOMIC);
3370 return -ENOMEM; /* Timer will clean up */
3372 i40iw_add_ref(&iwqp->ibqp);
3374 INIT_WORK(&work->work, i40iw_disconnect_worker);
3375 queue_work(cm_core->disconn_wq, &work->work);
3380 * i40iw_qp_disconnect - free qp and close cm
3381 * @iwqp: associate qp for the connection
3383 static void i40iw_qp_disconnect(struct i40iw_qp *iwqp)
3385 struct i40iw_device *iwdev;
3386 struct i40iw_ib_device *iwibdev;
3388 iwdev = to_iwdev(iwqp->ibqp.device);
3390 i40iw_pr_err("iwdev == NULL\n");
3394 iwibdev = iwdev->iwibdev;
3396 if (iwqp->active_conn) {
3397 /* indicate this connection is NOT active */
3398 iwqp->active_conn = 0;
3400 /* Need to free the Last Streaming Mode Message */
3401 if (iwqp->ietf_mem.va) {
3403 iwibdev->ibdev.dereg_mr(iwqp->lsmm_mr);
3404 i40iw_free_dma_mem(iwdev->sc_dev.hw, &iwqp->ietf_mem);
3408 /* close the CM node down if it is still active */
3409 if (iwqp->cm_node) {
3410 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_CM, "%s Call close API\n", __func__);
3411 i40iw_cm_close(iwqp->cm_node);
3416 * i40iw_cm_disconn_true - called by worker thread to disconnect qp
3417 * @iwqp: associate qp for the connection
3419 static void i40iw_cm_disconn_true(struct i40iw_qp *iwqp)
3421 struct iw_cm_id *cm_id;
3422 struct i40iw_device *iwdev;
3423 struct i40iw_sc_qp *qp = &iwqp->sc_qp;
3425 u8 original_hw_tcp_state;
3426 u8 original_ibqp_state;
3427 int disconn_status = 0;
3428 int issue_disconn = 0;
3429 int issue_close = 0;
3430 int issue_flush = 0;
3431 struct ib_event ibevent;
3432 unsigned long flags;
3436 i40iw_pr_err("iwqp == NULL\n");
3440 spin_lock_irqsave(&iwqp->lock, flags);
3441 cm_id = iwqp->cm_id;
3442 /* make sure we havent already closed this connection */
3444 spin_unlock_irqrestore(&iwqp->lock, flags);
3448 iwdev = to_iwdev(iwqp->ibqp.device);
3450 original_hw_tcp_state = iwqp->hw_tcp_state;
3451 original_ibqp_state = iwqp->ibqp_state;
3452 last_ae = iwqp->last_aeq;
3454 if (qp->term_flags) {
3458 /*When term timer expires after cm_timer, don't want
3459 *terminate-handler to issue cm_disconn which can re-free
3460 *a QP even after its refcnt=0.
3462 del_timer(&iwqp->terminate_timer);
3463 if (!iwqp->flush_issued) {
3464 iwqp->flush_issued = 1;
3467 } else if ((original_hw_tcp_state == I40IW_TCP_STATE_CLOSE_WAIT) ||
3468 ((original_ibqp_state == IB_QPS_RTS) &&
3469 (last_ae == I40IW_AE_LLP_CONNECTION_RESET))) {
3471 if (last_ae == I40IW_AE_LLP_CONNECTION_RESET)
3472 disconn_status = -ECONNRESET;
3475 if (((original_hw_tcp_state == I40IW_TCP_STATE_CLOSED) ||
3476 (original_hw_tcp_state == I40IW_TCP_STATE_TIME_WAIT) ||
3477 (last_ae == I40IW_AE_RDMAP_ROE_BAD_LLP_CLOSE) ||
3478 (last_ae == I40IW_AE_LLP_CONNECTION_RESET))) {
3481 if (!iwqp->flush_issued) {
3482 iwqp->flush_issued = 1;
3487 spin_unlock_irqrestore(&iwqp->lock, flags);
3488 if (issue_flush && !iwqp->destroyed) {
3489 /* Flush the queues */
3490 i40iw_flush_wqes(iwdev, iwqp);
3492 if (qp->term_flags && iwqp->ibqp.event_handler) {
3493 ibevent.device = iwqp->ibqp.device;
3494 ibevent.event = (qp->eventtype == TERM_EVENT_QP_FATAL) ?
3495 IB_EVENT_QP_FATAL : IB_EVENT_QP_ACCESS_ERR;
3496 ibevent.element.qp = &iwqp->ibqp;
3497 iwqp->ibqp.event_handler(&ibevent, iwqp->ibqp.qp_context);
3501 if (cm_id && cm_id->event_handler) {
3502 if (issue_disconn) {
3503 ret = i40iw_send_cm_event(NULL,
3505 IW_CM_EVENT_DISCONNECT,
3509 i40iw_debug(&iwdev->sc_dev,
3511 "disconnect event failed %s: - cm_id = %p\n",
3515 i40iw_qp_disconnect(iwqp);
3516 cm_id->provider_data = iwqp;
3517 ret = i40iw_send_cm_event(NULL, cm_id, IW_CM_EVENT_CLOSE, 0);
3519 i40iw_debug(&iwdev->sc_dev,
3521 "close event failed %s: - cm_id = %p\n",
3523 cm_id->rem_ref(cm_id);
3529 * i40iw_disconnect_worker - worker for connection close
3530 * @work: points or disconn structure
3532 static void i40iw_disconnect_worker(struct work_struct *work)
3534 struct disconn_work *dwork = container_of(work, struct disconn_work, work);
3535 struct i40iw_qp *iwqp = dwork->iwqp;
3538 i40iw_cm_disconn_true(iwqp);
3539 i40iw_rem_ref(&iwqp->ibqp);
3543 * i40iw_accept - registered call for connection to be accepted
3544 * @cm_id: cm information for passive connection
3545 * @conn_param: accpet parameters
3547 int i40iw_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
3550 struct i40iw_qp *iwqp;
3551 struct i40iw_device *iwdev;
3552 struct i40iw_sc_dev *dev;
3553 struct i40iw_cm_node *cm_node;
3554 struct ib_qp_attr attr;
3557 struct i40iw_pd *iwpd;
3559 struct i40iw_kmem_info accept;
3560 enum i40iw_status_code status;
3563 memset(&attr, 0, sizeof(attr));
3564 ibqp = i40iw_get_qp(cm_id->device, conn_param->qpn);
3568 iwqp = to_iwqp(ibqp);
3569 iwdev = iwqp->iwdev;
3570 dev = &iwdev->sc_dev;
3571 cm_node = (struct i40iw_cm_node *)cm_id->provider_data;
3573 if (((struct sockaddr_in *)&cm_id->local_addr)->sin_family == AF_INET) {
3574 cm_node->ipv4 = true;
3575 cm_node->vlan_id = i40iw_get_vlan_ipv4(cm_node->loc_addr);
3577 cm_node->ipv4 = false;
3578 i40iw_netdev_vlan_ipv6(cm_node->loc_addr, &cm_node->vlan_id, NULL);
3580 i40iw_debug(cm_node->dev,
3582 "Accept vlan_id=%d\n",
3584 if (cm_node->state == I40IW_CM_STATE_LISTENER_DESTROYED) {
3585 if (cm_node->loopbackpartner)
3586 i40iw_rem_ref_cm_node(cm_node->loopbackpartner);
3587 i40iw_rem_ref_cm_node(cm_node);
3591 passive_state = atomic_add_return(1, &cm_node->passive_state);
3592 if (passive_state == I40IW_SEND_RESET_EVENT) {
3593 i40iw_rem_ref_cm_node(cm_node);
3597 cm_node->cm_core->stats_accepts++;
3598 iwqp->cm_node = (void *)cm_node;
3599 cm_node->iwqp = iwqp;
3601 buf_len = conn_param->private_data_len + I40IW_MAX_IETF_SIZE;
3603 status = i40iw_allocate_dma_mem(dev->hw, &iwqp->ietf_mem, buf_len, 1);
3607 cm_node->pdata.size = conn_param->private_data_len;
3608 accept.addr = iwqp->ietf_mem.va;
3609 accept.size = i40iw_cm_build_mpa_frame(cm_node, &accept, MPA_KEY_REPLY);
3610 memcpy(accept.addr + accept.size, conn_param->private_data,
3611 conn_param->private_data_len);
3613 /* setup our first outgoing iWarp send WQE (the IETF frame response) */
3614 if ((cm_node->ipv4 &&
3615 !i40iw_ipv4_is_loopback(cm_node->loc_addr[0], cm_node->rem_addr[0])) ||
3617 !i40iw_ipv6_is_loopback(cm_node->loc_addr, cm_node->rem_addr))) {
3619 tagged_offset = (uintptr_t)iwqp->ietf_mem.va;
3620 ibmr = i40iw_reg_phys_mr(&iwpd->ibpd,
3623 IB_ACCESS_LOCAL_WRITE,
3626 i40iw_free_dma_mem(dev->hw, &iwqp->ietf_mem);
3630 ibmr->pd = &iwpd->ibpd;
3631 ibmr->device = iwpd->ibpd.device;
3632 iwqp->lsmm_mr = ibmr;
3634 iwqp->sc_qp.qp_uk.sq_base = kmap(iwqp->page);
3635 dev->iw_priv_qp_ops->qp_send_lsmm(&iwqp->sc_qp,
3637 (accept.size + conn_param->private_data_len),
3642 iwqp->sc_qp.qp_uk.sq_base = kmap(iwqp->page);
3643 dev->iw_priv_qp_ops->qp_send_lsmm(&iwqp->sc_qp, NULL, 0, 0);
3649 iwqp->cm_id = cm_id;
3650 cm_node->cm_id = cm_id;
3652 cm_id->provider_data = (void *)iwqp;
3653 iwqp->active_conn = 0;
3655 cm_node->lsmm_size = accept.size + conn_param->private_data_len;
3656 i40iw_cm_init_tsa_conn(iwqp, cm_node);
3657 cm_id->add_ref(cm_id);
3658 i40iw_add_ref(&iwqp->ibqp);
3660 i40iw_send_cm_event(cm_node, cm_id, IW_CM_EVENT_ESTABLISHED, 0);
3662 attr.qp_state = IB_QPS_RTS;
3663 cm_node->qhash_set = false;
3664 i40iw_modify_qp(&iwqp->ibqp, &attr, IB_QP_STATE, NULL);
3665 if (cm_node->loopbackpartner) {
3666 cm_node->loopbackpartner->pdata.size = conn_param->private_data_len;
3668 /* copy entire MPA frame to our cm_node's frame */
3669 memcpy(cm_node->loopbackpartner->pdata_buf,
3670 conn_param->private_data,
3671 conn_param->private_data_len);
3672 i40iw_create_event(cm_node->loopbackpartner, I40IW_CM_EVENT_CONNECTED);
3675 cm_node->accelerated = 1;
3676 if (cm_node->accept_pend) {
3677 if (!cm_node->listener)
3678 i40iw_pr_err("cm_node->listener NULL for passive node\n");
3679 atomic_dec(&cm_node->listener->pend_accepts_cnt);
3680 cm_node->accept_pend = 0;
3686 * i40iw_reject - registered call for connection to be rejected
3687 * @cm_id: cm information for passive connection
3688 * @pdata: private data to be sent
3689 * @pdata_len: private data length
3691 int i40iw_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
3693 struct i40iw_device *iwdev;
3694 struct i40iw_cm_node *cm_node;
3695 struct i40iw_cm_node *loopback;
3697 cm_node = (struct i40iw_cm_node *)cm_id->provider_data;
3698 loopback = cm_node->loopbackpartner;
3699 cm_node->cm_id = cm_id;
3700 cm_node->pdata.size = pdata_len;
3702 iwdev = to_iwdev(cm_id->device);
3705 cm_node->cm_core->stats_rejects++;
3707 if (pdata_len + sizeof(struct ietf_mpa_v2) > MAX_CM_BUFFER)
3711 memcpy(&loopback->pdata_buf, pdata, pdata_len);
3712 loopback->pdata.size = pdata_len;
3715 return i40iw_cm_reject(cm_node, pdata, pdata_len);
3719 * i40iw_connect - registered call for connection to be established
3720 * @cm_id: cm information for passive connection
3721 * @conn_param: Information about the connection
3723 int i40iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
3726 struct i40iw_qp *iwqp;
3727 struct i40iw_device *iwdev;
3728 struct i40iw_cm_node *cm_node;
3729 struct i40iw_cm_info cm_info;
3730 struct sockaddr_in *laddr;
3731 struct sockaddr_in *raddr;
3732 struct sockaddr_in6 *laddr6;
3733 struct sockaddr_in6 *raddr6;
3734 bool qhash_set = false;
3737 enum i40iw_status_code status;
3739 ibqp = i40iw_get_qp(cm_id->device, conn_param->qpn);
3742 iwqp = to_iwqp(ibqp);
3745 iwdev = to_iwdev(iwqp->ibqp.device);
3749 laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
3750 raddr = (struct sockaddr_in *)&cm_id->m_remote_addr;
3751 laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
3752 raddr6 = (struct sockaddr_in6 *)&cm_id->m_remote_addr;
3754 if (!(laddr->sin_port) || !(raddr->sin_port))
3757 iwqp->active_conn = 1;
3759 cm_id->provider_data = iwqp;
3761 /* set up the connection params for the node */
3762 if (cm_id->remote_addr.ss_family == AF_INET) {
3763 cm_info.ipv4 = true;
3764 memset(cm_info.loc_addr, 0, sizeof(cm_info.loc_addr));
3765 memset(cm_info.rem_addr, 0, sizeof(cm_info.rem_addr));
3766 cm_info.loc_addr[0] = ntohl(laddr->sin_addr.s_addr);
3767 cm_info.rem_addr[0] = ntohl(raddr->sin_addr.s_addr);
3768 cm_info.loc_port = ntohs(laddr->sin_port);
3769 cm_info.rem_port = ntohs(raddr->sin_port);
3770 cm_info.vlan_id = i40iw_get_vlan_ipv4(cm_info.loc_addr);
3772 cm_info.ipv4 = false;
3773 i40iw_copy_ip_ntohl(cm_info.loc_addr,
3774 laddr6->sin6_addr.in6_u.u6_addr32);
3775 i40iw_copy_ip_ntohl(cm_info.rem_addr,
3776 raddr6->sin6_addr.in6_u.u6_addr32);
3777 cm_info.loc_port = ntohs(laddr6->sin6_port);
3778 cm_info.rem_port = ntohs(raddr6->sin6_port);
3779 i40iw_netdev_vlan_ipv6(cm_info.loc_addr, &cm_info.vlan_id, NULL);
3781 cm_info.cm_id = cm_id;
3782 cm_info.tos = cm_id->tos;
3783 cm_info.user_pri = rt_tos2priority(cm_id->tos);
3784 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_DCB, "%s TOS:[%d] UP:[%d]\n",
3785 __func__, cm_id->tos, cm_info.user_pri);
3786 if ((cm_info.ipv4 && (laddr->sin_addr.s_addr != raddr->sin_addr.s_addr)) ||
3787 (!cm_info.ipv4 && memcmp(laddr6->sin6_addr.in6_u.u6_addr32,
3788 raddr6->sin6_addr.in6_u.u6_addr32,
3789 sizeof(laddr6->sin6_addr.in6_u.u6_addr32)))) {
3790 status = i40iw_manage_qhash(iwdev,
3792 I40IW_QHASH_TYPE_TCP_ESTABLISHED,
3793 I40IW_QHASH_MANAGE_TYPE_ADD,
3800 status = i40iw_manage_apbvt(iwdev, cm_info.loc_port, I40IW_MANAGE_APBVT_ADD);
3802 i40iw_manage_qhash(iwdev,
3804 I40IW_QHASH_TYPE_TCP_ESTABLISHED,
3805 I40IW_QHASH_MANAGE_TYPE_DELETE,
3812 cm_id->add_ref(cm_id);
3813 cm_node = i40iw_create_cm_node(&iwdev->cm_core, iwdev,
3814 conn_param->private_data_len,
3815 (void *)conn_param->private_data,
3818 if (IS_ERR(cm_node)) {
3819 err = PTR_ERR(cm_node);
3823 i40iw_record_ird_ord(cm_node, (u16)conn_param->ird, (u16)conn_param->ord);
3824 if (cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO &&
3826 cm_node->ord_size = 1;
3828 cm_node->apbvt_set = apbvt_set;
3829 cm_node->qhash_set = qhash_set;
3830 iwqp->cm_node = cm_node;
3831 cm_node->iwqp = iwqp;
3832 iwqp->cm_id = cm_id;
3833 i40iw_add_ref(&iwqp->ibqp);
3835 if (cm_node->state != I40IW_CM_STATE_OFFLOADED) {
3836 cm_node->state = I40IW_CM_STATE_SYN_SENT;
3837 err = i40iw_send_syn(cm_node, 0);
3839 i40iw_rem_ref_cm_node(cm_node);
3844 i40iw_debug(cm_node->dev,
3846 "Api - connect(): port=0x%04x, cm_node=%p, cm_id = %p.\n",
3854 i40iw_debug(&iwdev->sc_dev,
3856 "Api - connect() FAILED: dest addr=%pI4",
3859 i40iw_debug(&iwdev->sc_dev,
3861 "Api - connect() FAILED: dest addr=%pI6",
3865 i40iw_manage_qhash(iwdev,
3867 I40IW_QHASH_TYPE_TCP_ESTABLISHED,
3868 I40IW_QHASH_MANAGE_TYPE_DELETE,
3872 if (apbvt_set && !i40iw_listen_port_in_use(&iwdev->cm_core,
3874 i40iw_manage_apbvt(iwdev,
3876 I40IW_MANAGE_APBVT_DEL);
3877 cm_id->rem_ref(cm_id);
3878 iwdev->cm_core.stats_connect_errs++;
3883 * i40iw_create_listen - registered call creating listener
3884 * @cm_id: cm information for passive connection
3885 * @backlog: to max accept pending count
3887 int i40iw_create_listen(struct iw_cm_id *cm_id, int backlog)
3889 struct i40iw_device *iwdev;
3890 struct i40iw_cm_listener *cm_listen_node;
3891 struct i40iw_cm_info cm_info;
3892 enum i40iw_status_code ret;
3893 struct sockaddr_in *laddr;
3894 struct sockaddr_in6 *laddr6;
3895 bool wildcard = false;
3897 iwdev = to_iwdev(cm_id->device);
3901 laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
3902 laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
3903 memset(&cm_info, 0, sizeof(cm_info));
3904 if (laddr->sin_family == AF_INET) {
3905 cm_info.ipv4 = true;
3906 cm_info.loc_addr[0] = ntohl(laddr->sin_addr.s_addr);
3907 cm_info.loc_port = ntohs(laddr->sin_port);
3909 if (laddr->sin_addr.s_addr != INADDR_ANY)
3910 cm_info.vlan_id = i40iw_get_vlan_ipv4(cm_info.loc_addr);
3915 cm_info.ipv4 = false;
3916 i40iw_copy_ip_ntohl(cm_info.loc_addr,
3917 laddr6->sin6_addr.in6_u.u6_addr32);
3918 cm_info.loc_port = ntohs(laddr6->sin6_port);
3919 if (ipv6_addr_type(&laddr6->sin6_addr) != IPV6_ADDR_ANY)
3920 i40iw_netdev_vlan_ipv6(cm_info.loc_addr,
3926 cm_info.backlog = backlog;
3927 cm_info.cm_id = cm_id;
3929 cm_listen_node = i40iw_make_listen_node(&iwdev->cm_core, iwdev, &cm_info);
3930 if (!cm_listen_node) {
3931 i40iw_pr_err("cm_listen_node == NULL\n");
3935 cm_id->provider_data = cm_listen_node;
3937 cm_listen_node->tos = cm_id->tos;
3938 cm_listen_node->user_pri = rt_tos2priority(cm_id->tos);
3939 cm_info.user_pri = cm_listen_node->user_pri;
3941 if (!cm_listen_node->reused_node) {
3944 ret = i40iw_add_mqh_4(iwdev,
3948 ret = i40iw_add_mqh_6(iwdev,
3954 ret = i40iw_manage_apbvt(iwdev,
3956 I40IW_MANAGE_APBVT_ADD);
3961 ret = i40iw_manage_qhash(iwdev,
3963 I40IW_QHASH_TYPE_TCP_SYN,
3964 I40IW_QHASH_MANAGE_TYPE_ADD,
3969 cm_listen_node->qhash_set = true;
3970 ret = i40iw_manage_apbvt(iwdev,
3972 I40IW_MANAGE_APBVT_ADD);
3977 cm_id->add_ref(cm_id);
3978 cm_listen_node->cm_core->stats_listen_created++;
3981 i40iw_cm_del_listen(&iwdev->cm_core, (void *)cm_listen_node, false);
3986 * i40iw_destroy_listen - registered call to destroy listener
3987 * @cm_id: cm information for passive connection
3989 int i40iw_destroy_listen(struct iw_cm_id *cm_id)
3991 struct i40iw_device *iwdev;
3993 iwdev = to_iwdev(cm_id->device);
3994 if (cm_id->provider_data)
3995 i40iw_cm_del_listen(&iwdev->cm_core, cm_id->provider_data, true);
3997 i40iw_pr_err("cm_id->provider_data was NULL\n");
3999 cm_id->rem_ref(cm_id);
4005 * i40iw_cm_event_connected - handle connected active node
4006 * @event: the info for cm_node of connection
4008 static void i40iw_cm_event_connected(struct i40iw_cm_event *event)
4010 struct i40iw_qp *iwqp;
4011 struct i40iw_device *iwdev;
4012 struct i40iw_cm_node *cm_node;
4013 struct i40iw_sc_dev *dev;
4014 struct ib_qp_attr attr;
4015 struct iw_cm_id *cm_id;
4019 cm_node = event->cm_node;
4020 cm_id = cm_node->cm_id;
4021 iwqp = (struct i40iw_qp *)cm_id->provider_data;
4022 iwdev = to_iwdev(iwqp->ibqp.device);
4023 dev = &iwdev->sc_dev;
4025 if (iwqp->destroyed) {
4026 status = -ETIMEDOUT;
4029 i40iw_cm_init_tsa_conn(iwqp, cm_node);
4030 read0 = (cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO);
4032 iwqp->sc_qp.qp_uk.sq_base = kmap(iwqp->page);
4033 dev->iw_priv_qp_ops->qp_send_rtt(&iwqp->sc_qp, read0);
4036 status = i40iw_send_cm_event(cm_node, cm_id, IW_CM_EVENT_CONNECT_REPLY, 0);
4038 i40iw_pr_err("send cm event\n");
4040 memset(&attr, 0, sizeof(attr));
4041 attr.qp_state = IB_QPS_RTS;
4042 cm_node->qhash_set = false;
4043 i40iw_modify_qp(&iwqp->ibqp, &attr, IB_QP_STATE, NULL);
4045 cm_node->accelerated = 1;
4046 if (cm_node->accept_pend) {
4047 if (!cm_node->listener)
4048 i40iw_pr_err("listener is null for passive node\n");
4049 atomic_dec(&cm_node->listener->pend_accepts_cnt);
4050 cm_node->accept_pend = 0;
4056 cm_id->provider_data = NULL;
4057 i40iw_send_cm_event(event->cm_node,
4059 IW_CM_EVENT_CONNECT_REPLY,
4061 cm_id->rem_ref(cm_id);
4062 i40iw_rem_ref_cm_node(event->cm_node);
4066 * i40iw_cm_event_reset - handle reset
4067 * @event: the info for cm_node of connection
4069 static void i40iw_cm_event_reset(struct i40iw_cm_event *event)
4071 struct i40iw_cm_node *cm_node = event->cm_node;
4072 struct iw_cm_id *cm_id = cm_node->cm_id;
4073 struct i40iw_qp *iwqp;
4078 iwqp = cm_id->provider_data;
4082 i40iw_debug(cm_node->dev,
4084 "reset event %p - cm_id = %p\n",
4085 event->cm_node, cm_id);
4088 i40iw_send_cm_event(cm_node, cm_node->cm_id, IW_CM_EVENT_DISCONNECT, -ECONNRESET);
4089 i40iw_send_cm_event(cm_node, cm_node->cm_id, IW_CM_EVENT_CLOSE, 0);
4093 * i40iw_cm_event_handler - worker thread callback to send event to cm upper layer
4094 * @work: pointer of cm event info.
4096 static void i40iw_cm_event_handler(struct work_struct *work)
4098 struct i40iw_cm_event *event = container_of(work,
4099 struct i40iw_cm_event,
4101 struct i40iw_cm_node *cm_node;
4103 if (!event || !event->cm_node || !event->cm_node->cm_core)
4106 cm_node = event->cm_node;
4108 switch (event->type) {
4109 case I40IW_CM_EVENT_MPA_REQ:
4110 i40iw_send_cm_event(cm_node,
4112 IW_CM_EVENT_CONNECT_REQUEST,
4115 case I40IW_CM_EVENT_RESET:
4116 i40iw_cm_event_reset(event);
4118 case I40IW_CM_EVENT_CONNECTED:
4119 if (!event->cm_node->cm_id ||
4120 (event->cm_node->state != I40IW_CM_STATE_OFFLOADED))
4122 i40iw_cm_event_connected(event);
4124 case I40IW_CM_EVENT_MPA_REJECT:
4125 if (!event->cm_node->cm_id ||
4126 (cm_node->state == I40IW_CM_STATE_OFFLOADED))
4128 i40iw_send_cm_event(cm_node,
4130 IW_CM_EVENT_CONNECT_REPLY,
4133 case I40IW_CM_EVENT_ABORTED:
4134 if (!event->cm_node->cm_id ||
4135 (event->cm_node->state == I40IW_CM_STATE_OFFLOADED))
4137 i40iw_event_connect_error(event);
4140 i40iw_pr_err("event type = %d\n", event->type);
4144 event->cm_info.cm_id->rem_ref(event->cm_info.cm_id);
4145 i40iw_rem_ref_cm_node(event->cm_node);
4150 * i40iw_cm_post_event - queue event request for worker thread
4151 * @event: cm node's info for up event call
4153 static void i40iw_cm_post_event(struct i40iw_cm_event *event)
4155 atomic_inc(&event->cm_node->ref_count);
4156 event->cm_info.cm_id->add_ref(event->cm_info.cm_id);
4157 INIT_WORK(&event->event_work, i40iw_cm_event_handler);
4159 queue_work(event->cm_node->cm_core->event_wq, &event->event_work);
4163 * i40iw_qhash_ctrl - enable/disable qhash for list
4164 * @iwdev: device pointer
4165 * @parent_listen_node: parent listen node
4166 * @nfo: cm info node
4167 * @ipaddr: Pointer to IPv4 or IPv6 address
4168 * @ipv4: flag indicating IPv4 when true
4169 * @ifup: flag indicating interface up when true
4171 * Enables or disables the qhash for the node in the child
4172 * listen list that matches ipaddr. If no matching IP was found
4173 * it will allocate and add a new child listen node to the
4174 * parent listen node. The listen_list_lock is assumed to be
4177 static void i40iw_qhash_ctrl(struct i40iw_device *iwdev,
4178 struct i40iw_cm_listener *parent_listen_node,
4179 struct i40iw_cm_info *nfo,
4180 u32 *ipaddr, bool ipv4, bool ifup)
4182 struct list_head *child_listen_list = &parent_listen_node->child_listen_list;
4183 struct i40iw_cm_listener *child_listen_node;
4184 struct list_head *pos, *tpos;
4185 enum i40iw_status_code ret;
4186 bool node_allocated = false;
4187 enum i40iw_quad_hash_manage_type op =
4188 ifup ? I40IW_QHASH_MANAGE_TYPE_ADD : I40IW_QHASH_MANAGE_TYPE_DELETE;
4190 list_for_each_safe(pos, tpos, child_listen_list) {
4193 struct i40iw_cm_listener,
4195 if (!memcmp(child_listen_node->loc_addr, ipaddr, ipv4 ? 4 : 16))
4199 /* if not found then add a child listener if interface is going up */
4202 child_listen_node = kzalloc(sizeof(*child_listen_node), GFP_ATOMIC);
4203 if (!child_listen_node)
4205 node_allocated = true;
4206 memcpy(child_listen_node, parent_listen_node, sizeof(*child_listen_node));
4208 memcpy(child_listen_node->loc_addr, ipaddr, ipv4 ? 4 : 16);
4211 memcpy(nfo->loc_addr,
4212 child_listen_node->loc_addr,
4213 sizeof(nfo->loc_addr));
4214 nfo->vlan_id = child_listen_node->vlan_id;
4215 ret = i40iw_manage_qhash(iwdev, nfo,
4216 I40IW_QHASH_TYPE_TCP_SYN,
4220 child_listen_node->qhash_set = ifup;
4222 list_add(&child_listen_node->child_listen_list,
4223 &parent_listen_node->child_listen_list);
4224 } else if (node_allocated) {
4225 kfree(child_listen_node);
4230 * i40iw_cm_disconnect_all - disconnect all connected qp's
4231 * @iwdev: device pointer
4233 void i40iw_cm_disconnect_all(struct i40iw_device *iwdev)
4235 struct i40iw_cm_core *cm_core = &iwdev->cm_core;
4236 struct list_head *list_core_temp;
4237 struct list_head *list_node;
4238 struct i40iw_cm_node *cm_node;
4239 unsigned long flags;
4240 struct list_head connected_list;
4241 struct ib_qp_attr attr;
4243 INIT_LIST_HEAD(&connected_list);
4244 spin_lock_irqsave(&cm_core->ht_lock, flags);
4245 list_for_each_safe(list_node, list_core_temp, &cm_core->connected_nodes) {
4246 cm_node = container_of(list_node, struct i40iw_cm_node, list);
4247 atomic_inc(&cm_node->ref_count);
4248 list_add(&cm_node->connected_entry, &connected_list);
4250 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
4252 list_for_each_safe(list_node, list_core_temp, &connected_list) {
4253 cm_node = container_of(list_node, struct i40iw_cm_node, connected_entry);
4254 attr.qp_state = IB_QPS_ERR;
4255 i40iw_modify_qp(&cm_node->iwqp->ibqp, &attr, IB_QP_STATE, NULL);
4256 i40iw_rem_ref_cm_node(cm_node);
4261 * i40iw_ifdown_notify - process an ifdown on an interface
4262 * @iwdev: device pointer
4263 * @ipaddr: Pointer to IPv4 or IPv6 address
4264 * @ipv4: flag indicating IPv4 when true
4265 * @ifup: flag indicating interface up when true
4267 void i40iw_if_notify(struct i40iw_device *iwdev, struct net_device *netdev,
4268 u32 *ipaddr, bool ipv4, bool ifup)
4270 struct i40iw_cm_core *cm_core = &iwdev->cm_core;
4271 unsigned long flags;
4272 struct i40iw_cm_listener *listen_node;
4273 static const u32 ip_zero[4] = { 0, 0, 0, 0 };
4274 struct i40iw_cm_info nfo;
4275 u16 vlan_id = rdma_vlan_dev_vlan_id(netdev);
4276 enum i40iw_status_code ret;
4277 enum i40iw_quad_hash_manage_type op =
4278 ifup ? I40IW_QHASH_MANAGE_TYPE_ADD : I40IW_QHASH_MANAGE_TYPE_DELETE;
4280 /* Disable or enable qhash for listeners */
4281 spin_lock_irqsave(&cm_core->listen_list_lock, flags);
4282 list_for_each_entry(listen_node, &cm_core->listen_nodes, list) {
4283 if (vlan_id == listen_node->vlan_id &&
4284 (!memcmp(listen_node->loc_addr, ipaddr, ipv4 ? 4 : 16) ||
4285 !memcmp(listen_node->loc_addr, ip_zero, ipv4 ? 4 : 16))) {
4286 memcpy(nfo.loc_addr, listen_node->loc_addr,
4287 sizeof(nfo.loc_addr));
4288 nfo.loc_port = listen_node->loc_port;
4289 nfo.ipv4 = listen_node->ipv4;
4290 nfo.vlan_id = listen_node->vlan_id;
4291 nfo.user_pri = listen_node->user_pri;
4292 if (!list_empty(&listen_node->child_listen_list)) {
4293 i40iw_qhash_ctrl(iwdev,
4296 ipaddr, ipv4, ifup);
4297 } else if (memcmp(listen_node->loc_addr, ip_zero,
4299 ret = i40iw_manage_qhash(iwdev,
4301 I40IW_QHASH_TYPE_TCP_SYN,
4306 listen_node->qhash_set = ifup;
4310 spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
4312 /* disconnect any connected qp's on ifdown */
4314 i40iw_cm_disconnect_all(iwdev);