drivers/infiniband/hw/irdma/cm.c

   1 // SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
   2 /* Copyright (c) 2015 - 2021 Intel Corporation */
   3 #include "main.h"
   4 #include "trace.h"
   5
   6 static void irdma_cm_post_event(struct irdma_cm_event *event);
   7 static void irdma_disconnect_worker(struct work_struct *work);
   8
   9 /**
  10  * irdma_free_sqbuf - put back puda buffer if refcount is 0
  11  * @vsi: The VSI structure of the device
  12  * @bufp: puda buffer to free
  13  */
  14 void irdma_free_sqbuf(struct irdma_sc_vsi *vsi, void *bufp)
  15 {
  16         struct irdma_puda_buf *buf = bufp;
  17         struct irdma_puda_rsrc *ilq = vsi->ilq;
  18
  19         if (refcount_dec_and_test(&buf->refcount))
  20                 irdma_puda_ret_bufpool(ilq, buf);
  21 }
  22
  23 /**
  24  * irdma_record_ird_ord - Record IRD/ORD passed in
  25  * @cm_node: connection's node
  26  * @conn_ird: connection IRD
  27  * @conn_ord: connection ORD
  28  */
  29 static void irdma_record_ird_ord(struct irdma_cm_node *cm_node, u32 conn_ird,
  30                                  u32 conn_ord)
  31 {
  32         if (conn_ird > cm_node->dev->hw_attrs.max_hw_ird)
  33                 conn_ird = cm_node->dev->hw_attrs.max_hw_ird;
  34
  35         if (conn_ord > cm_node->dev->hw_attrs.max_hw_ord)
  36                 conn_ord = cm_node->dev->hw_attrs.max_hw_ord;
  37         else if (!conn_ord && cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO)
  38                 conn_ord = 1;
  39         cm_node->ird_size = conn_ird;
  40         cm_node->ord_size = conn_ord;
  41 }
  42
  43 /**
  44  * irdma_copy_ip_ntohl - copy IP address from  network to host
  45  * @dst: IP address in host order
  46  * @src: IP address in network order (big endian)
  47  */
  48 void irdma_copy_ip_ntohl(u32 *dst, __be32 *src)
  49 {
  50         *dst++ = ntohl(*src++);
  51         *dst++ = ntohl(*src++);
  52         *dst++ = ntohl(*src++);
  53         *dst = ntohl(*src);
  54 }
  55
  56 /**
  57  * irdma_copy_ip_htonl - copy IP address from host to network order
  58  * @dst: IP address in network order (big endian)
  59  * @src: IP address in host order
  60  */
  61 void irdma_copy_ip_htonl(__be32 *dst, u32 *src)
  62 {
  63         *dst++ = htonl(*src++);
  64         *dst++ = htonl(*src++);
  65         *dst++ = htonl(*src++);
  66         *dst = htonl(*src);
  67 }
  68
  69 /**
  70  * irdma_get_addr_info
  71  * @cm_node: contains ip/tcp info
  72  * @cm_info: to get a copy of the cm_node ip/tcp info
  73  */
  74 static void irdma_get_addr_info(struct irdma_cm_node *cm_node,
  75                                 struct irdma_cm_info *cm_info)
  76 {
  77         memset(cm_info, 0, sizeof(*cm_info));
  78         cm_info->ipv4 = cm_node->ipv4;
  79         cm_info->vlan_id = cm_node->vlan_id;
  80         memcpy(cm_info->loc_addr, cm_node->loc_addr, sizeof(cm_info->loc_addr));
  81         memcpy(cm_info->rem_addr, cm_node->rem_addr, sizeof(cm_info->rem_addr));
  82         cm_info->loc_port = cm_node->loc_port;
  83         cm_info->rem_port = cm_node->rem_port;
  84 }
  85
  86 /**
  87  * irdma_fill_sockaddr4 - fill in addr info for IPv4 connection
  88  * @cm_node: connection's node
  89  * @event: upper layer's cm event
  90  */
  91 static inline void irdma_fill_sockaddr4(struct irdma_cm_node *cm_node,
  92                                         struct iw_cm_event *event)
  93 {
  94         struct sockaddr_in *laddr = (struct sockaddr_in *)&event->local_addr;
  95         struct sockaddr_in *raddr = (struct sockaddr_in *)&event->remote_addr;
  96
  97         laddr->sin_family = AF_INET;
  98         raddr->sin_family = AF_INET;
  99
 100         laddr->sin_port = htons(cm_node->loc_port);
 101         raddr->sin_port = htons(cm_node->rem_port);
 102
 103         laddr->sin_addr.s_addr = htonl(cm_node->loc_addr[0]);
 104         raddr->sin_addr.s_addr = htonl(cm_node->rem_addr[0]);
 105 }
 106
 107 /**
 108  * irdma_fill_sockaddr6 - fill in addr info for IPv6 connection
 109  * @cm_node: connection's node
 110  * @event: upper layer's cm event
 111  */
 112 static inline void irdma_fill_sockaddr6(struct irdma_cm_node *cm_node,
 113                                         struct iw_cm_event *event)
 114 {
 115         struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)&event->local_addr;
 116         struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)&event->remote_addr;
 117
 118         laddr6->sin6_family = AF_INET6;
 119         raddr6->sin6_family = AF_INET6;
 120
 121         laddr6->sin6_port = htons(cm_node->loc_port);
 122         raddr6->sin6_port = htons(cm_node->rem_port);
 123
 124         irdma_copy_ip_htonl(laddr6->sin6_addr.in6_u.u6_addr32,
 125                             cm_node->loc_addr);
 126         irdma_copy_ip_htonl(raddr6->sin6_addr.in6_u.u6_addr32,
 127                             cm_node->rem_addr);
 128 }
 129
 130 /**
 131  * irdma_get_cmevent_info - for cm event upcall
 132  * @cm_node: connection's node
 133  * @cm_id: upper layers cm struct for the event
 134  * @event: upper layer's cm event
 135  */
 136 static inline void irdma_get_cmevent_info(struct irdma_cm_node *cm_node,
 137                                           struct iw_cm_id *cm_id,
 138                                           struct iw_cm_event *event)
 139 {
 140         memcpy(&event->local_addr, &cm_id->m_local_addr,
 141                sizeof(event->local_addr));
 142         memcpy(&event->remote_addr, &cm_id->m_remote_addr,
 143                sizeof(event->remote_addr));
 144         if (cm_node) {
 145                 event->private_data = cm_node->pdata_buf;
 146                 event->private_data_len = (u8)cm_node->pdata.size;
 147                 event->ird = cm_node->ird_size;
 148                 event->ord = cm_node->ord_size;
 149         }
 150 }
 151
 152 /**
 153  * irdma_send_cm_event - upcall cm's event handler
 154  * @cm_node: connection's node
 155  * @cm_id: upper layer's cm info struct
 156  * @type: Event type to indicate
 157  * @status: status for the event type
 158  */
 159 static int irdma_send_cm_event(struct irdma_cm_node *cm_node,
 160                                struct iw_cm_id *cm_id,
 161                                enum iw_cm_event_type type, int status)
 162 {
 163         struct iw_cm_event event = {};
 164
 165         event.event = type;
 166         event.status = status;
 167         trace_irdma_send_cm_event(cm_node, cm_id, type, status,
 168                                   __builtin_return_address(0));
 169
 170         ibdev_dbg(&cm_node->iwdev->ibdev,
 171                   "CM: cm_node %p cm_id=%p state=%d accel=%d event_type=%d status=%d\n",
 172                   cm_node, cm_id, cm_node->accelerated, cm_node->state, type,
 173                   status);
 174
 175         switch (type) {
 176         case IW_CM_EVENT_CONNECT_REQUEST:
 177                 if (cm_node->ipv4)
 178                         irdma_fill_sockaddr4(cm_node, &event);
 179                 else
 180                         irdma_fill_sockaddr6(cm_node, &event);
 181                 event.provider_data = cm_node;
 182                 event.private_data = cm_node->pdata_buf;
 183                 event.private_data_len = (u8)cm_node->pdata.size;
 184                 event.ird = cm_node->ird_size;
 185                 break;
 186         case IW_CM_EVENT_CONNECT_REPLY:
 187                 irdma_get_cmevent_info(cm_node, cm_id, &event);
 188                 break;
 189         case IW_CM_EVENT_ESTABLISHED:
 190                 event.ird = cm_node->ird_size;
 191                 event.ord = cm_node->ord_size;
 192                 break;
 193         case IW_CM_EVENT_DISCONNECT:
 194         case IW_CM_EVENT_CLOSE:
 195                 /* Wait if we are in RTS but havent issued the iwcm event upcall */
 196                 if (!cm_node->accelerated)
 197                         wait_for_completion(&cm_node->establish_comp);
 198                 break;
 199         default:
 200                 return -EINVAL;
 201         }
 202
 203         return cm_id->event_handler(cm_id, &event);
 204 }
 205
 206 /**
 207  * irdma_timer_list_prep - add connection nodes to a list to perform timer tasks
 208  * @cm_core: cm's core
 209  * @timer_list: a timer list to which cm_node will be selected
 210  */
 211 static void irdma_timer_list_prep(struct irdma_cm_core *cm_core,
 212                                   struct list_head *timer_list)
 213 {
 214         struct irdma_cm_node *cm_node;
 215         int bkt;
 216
 217         hash_for_each_rcu(cm_core->cm_hash_tbl, bkt, cm_node, list) {
 218                 if ((cm_node->close_entry || cm_node->send_entry) &&
 219                     refcount_inc_not_zero(&cm_node->refcnt))
 220                         list_add(&cm_node->timer_entry, timer_list);
 221         }
 222 }
 223
 224 /**
 225  * irdma_create_event - create cm event
 226  * @cm_node: connection's node
 227  * @type: Event type to generate
 228  */
 229 static struct irdma_cm_event *irdma_create_event(struct irdma_cm_node *cm_node,
 230                                                  enum irdma_cm_event_type type)
 231 {
 232         struct irdma_cm_event *event;
 233
 234         if (!cm_node->cm_id)
 235                 return NULL;
 236
 237         event = kzalloc(sizeof(*event), GFP_ATOMIC);
 238
 239         if (!event)
 240                 return NULL;
 241
 242         event->type = type;
 243         event->cm_node = cm_node;
 244         memcpy(event->cm_info.rem_addr, cm_node->rem_addr,
 245                sizeof(event->cm_info.rem_addr));
 246         memcpy(event->cm_info.loc_addr, cm_node->loc_addr,
 247                sizeof(event->cm_info.loc_addr));
 248         event->cm_info.rem_port = cm_node->rem_port;
 249         event->cm_info.loc_port = cm_node->loc_port;
 250         event->cm_info.cm_id = cm_node->cm_id;
 251         ibdev_dbg(&cm_node->iwdev->ibdev,
 252                   "CM: node=%p event=%p type=%u dst=%pI4 src=%pI4\n", cm_node,
 253                   event, type, event->cm_info.loc_addr,
 254                   event->cm_info.rem_addr);
 255         trace_irdma_create_event(cm_node, type, __builtin_return_address(0));
 256         irdma_cm_post_event(event);
 257
 258         return event;
 259 }
 260
 261 /**
 262  * irdma_free_retrans_entry - free send entry
 263  * @cm_node: connection's node
 264  */
 265 static void irdma_free_retrans_entry(struct irdma_cm_node *cm_node)
 266 {
 267         struct irdma_device *iwdev = cm_node->iwdev;
 268         struct irdma_timer_entry *send_entry;
 269
 270         send_entry = cm_node->send_entry;
 271         if (!send_entry)
 272                 return;
 273
 274         cm_node->send_entry = NULL;
 275         irdma_free_sqbuf(&iwdev->vsi, send_entry->sqbuf);
 276         kfree(send_entry);
 277         refcount_dec(&cm_node->refcnt);
 278 }
 279
 280 /**
 281  * irdma_cleanup_retrans_entry - free send entry with lock
 282  * @cm_node: connection's node
 283  */
 284 static void irdma_cleanup_retrans_entry(struct irdma_cm_node *cm_node)
 285 {
 286         unsigned long flags;
 287
 288         spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
 289         irdma_free_retrans_entry(cm_node);
 290         spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
 291 }
 292
 293 /**
 294  * irdma_form_ah_cm_frame - get a free packet and build frame with address handle
 295  * @cm_node: connection's node ionfo to use in frame
 296  * @options: pointer to options info
 297  * @hdr: pointer mpa header
 298  * @pdata: pointer to private data
 299  * @flags:  indicates FIN or ACK
 300  */
 301 static struct irdma_puda_buf *irdma_form_ah_cm_frame(struct irdma_cm_node *cm_node,
 302                                                      struct irdma_kmem_info *options,
 303                                                      struct irdma_kmem_info *hdr,
 304                                                      struct irdma_mpa_priv_info *pdata,
 305                                                      u8 flags)
 306 {
 307         struct irdma_puda_buf *sqbuf;
 308         struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi;
 309         u8 *buf;
 310         struct tcphdr *tcph;
 311         u16 pktsize;
 312         u32 opts_len = 0;
 313         u32 pd_len = 0;
 314         u32 hdr_len = 0;
 315
 316         if (!cm_node->ah || !cm_node->ah->ah_info.ah_valid) {
 317                 ibdev_dbg(&cm_node->iwdev->ibdev, "CM: AH invalid\n");
 318                 return NULL;
 319         }
 320
 321         sqbuf = irdma_puda_get_bufpool(vsi->ilq);
 322         if (!sqbuf) {
 323                 ibdev_dbg(&cm_node->iwdev->ibdev, "CM: SQ buf NULL\n");
 324                 return NULL;
 325         }
 326
 327         sqbuf->ah_id = cm_node->ah->ah_info.ah_idx;
 328         buf = sqbuf->mem.va;
 329         if (options)
 330                 opts_len = (u32)options->size;
 331
 332         if (hdr)
 333                 hdr_len = hdr->size;
 334
 335         if (pdata)
 336                 pd_len = pdata->size;
 337
 338         pktsize = sizeof(*tcph) + opts_len + hdr_len + pd_len;
 339
 340         memset(buf, 0, sizeof(*tcph));
 341
 342         sqbuf->totallen = pktsize;
 343         sqbuf->tcphlen = sizeof(*tcph) + opts_len;
 344         sqbuf->scratch = cm_node;
 345
 346         tcph = (struct tcphdr *)buf;
 347         buf += sizeof(*tcph);
 348
 349         tcph->source = htons(cm_node->loc_port);
 350         tcph->dest = htons(cm_node->rem_port);
 351         tcph->seq = htonl(cm_node->tcp_cntxt.loc_seq_num);
 352
 353         if (flags & SET_ACK) {
 354                 cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt;
 355                 tcph->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num);
 356                 tcph->ack = 1;
 357         } else {
 358                 tcph->ack_seq = 0;
 359         }
 360
 361         if (flags & SET_SYN) {
 362                 cm_node->tcp_cntxt.loc_seq_num++;
 363                 tcph->syn = 1;
 364         } else {
 365                 cm_node->tcp_cntxt.loc_seq_num += hdr_len + pd_len;
 366         }
 367
 368         if (flags & SET_FIN) {
 369                 cm_node->tcp_cntxt.loc_seq_num++;
 370                 tcph->fin = 1;
 371         }
 372
 373         if (flags & SET_RST)
 374                 tcph->rst = 1;
 375
 376         tcph->doff = (u16)((sizeof(*tcph) + opts_len + 3) >> 2);
 377         sqbuf->tcphlen = tcph->doff << 2;
 378         tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd);
 379         tcph->urg_ptr = 0;
 380
 381         if (opts_len) {
 382                 memcpy(buf, options->addr, opts_len);
 383                 buf += opts_len;
 384         }
 385
 386         if (hdr_len) {
 387                 memcpy(buf, hdr->addr, hdr_len);
 388                 buf += hdr_len;
 389         }
 390
 391         if (pdata && pdata->addr)
 392                 memcpy(buf, pdata->addr, pdata->size);
 393
 394         refcount_set(&sqbuf->refcount, 1);
 395
 396         print_hex_dump_debug("ILQ: TRANSMIT ILQ BUFFER", DUMP_PREFIX_OFFSET,
 397                              16, 8, sqbuf->mem.va, sqbuf->totallen, false);
 398
 399         return sqbuf;
 400 }
 401
 402 /**
 403  * irdma_form_uda_cm_frame - get a free packet and build frame full tcpip packet
 404  * @cm_node: connection's node ionfo to use in frame
 405  * @options: pointer to options info
 406  * @hdr: pointer mpa header
 407  * @pdata: pointer to private data
 408  * @flags:  indicates FIN or ACK
 409  */
 410 static struct irdma_puda_buf *irdma_form_uda_cm_frame(struct irdma_cm_node *cm_node,
 411                                                       struct irdma_kmem_info *options,
 412                                                       struct irdma_kmem_info *hdr,
 413                                                       struct irdma_mpa_priv_info *pdata,
 414                                                       u8 flags)
 415 {
 416         struct irdma_puda_buf *sqbuf;
 417         struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi;
 418         u8 *buf;
 419
 420         struct tcphdr *tcph;
 421         struct iphdr *iph;
 422         struct ipv6hdr *ip6h;
 423         struct ethhdr *ethh;
 424         u16 pktsize;
 425         u16 eth_hlen = ETH_HLEN;
 426         u32 opts_len = 0;
 427         u32 pd_len = 0;
 428         u32 hdr_len = 0;
 429
 430         u16 vtag;
 431
 432         sqbuf = irdma_puda_get_bufpool(vsi->ilq);
 433         if (!sqbuf)
 434                 return NULL;
 435
 436         buf = sqbuf->mem.va;
 437
 438         if (options)
 439                 opts_len = (u32)options->size;
 440
 441         if (hdr)
 442                 hdr_len = hdr->size;
 443
 444         if (pdata)
 445                 pd_len = pdata->size;
 446
 447         if (cm_node->vlan_id < VLAN_N_VID)
 448                 eth_hlen += 4;
 449
 450         if (cm_node->ipv4)
 451                 pktsize = sizeof(*iph) + sizeof(*tcph);
 452         else
 453                 pktsize = sizeof(*ip6h) + sizeof(*tcph);
 454         pktsize += opts_len + hdr_len + pd_len;
 455
 456         memset(buf, 0, eth_hlen + pktsize);
 457
 458         sqbuf->totallen = pktsize + eth_hlen;
 459         sqbuf->maclen = eth_hlen;
 460         sqbuf->tcphlen = sizeof(*tcph) + opts_len;
 461         sqbuf->scratch = cm_node;
 462
 463         ethh = (struct ethhdr *)buf;
 464         buf += eth_hlen;
 465
 466         if (cm_node->do_lpb)
 467                 sqbuf->do_lpb = true;
 468
 469         if (cm_node->ipv4) {
 470                 sqbuf->ipv4 = true;
 471
 472                 iph = (struct iphdr *)buf;
 473                 buf += sizeof(*iph);
 474                 tcph = (struct tcphdr *)buf;
 475                 buf += sizeof(*tcph);
 476
 477                 ether_addr_copy(ethh->h_dest, cm_node->rem_mac);
 478                 ether_addr_copy(ethh->h_source, cm_node->loc_mac);
 479                 if (cm_node->vlan_id < VLAN_N_VID) {
 480                         ((struct vlan_ethhdr *)ethh)->h_vlan_proto =
 481                                 htons(ETH_P_8021Q);
 482                         vtag = (cm_node->user_pri << VLAN_PRIO_SHIFT) |
 483                                cm_node->vlan_id;
 484                         ((struct vlan_ethhdr *)ethh)->h_vlan_TCI = htons(vtag);
 485
 486                         ((struct vlan_ethhdr *)ethh)->h_vlan_encapsulated_proto =
 487                                 htons(ETH_P_IP);
 488                 } else {
 489                         ethh->h_proto = htons(ETH_P_IP);
 490                 }
 491
 492                 iph->version = IPVERSION;
 493                 iph->ihl = 5; /* 5 * 4Byte words, IP headr len */
 494                 iph->tos = cm_node->tos;
 495                 iph->tot_len = htons(pktsize);
 496                 iph->id = htons(++cm_node->tcp_cntxt.loc_id);
 497
 498                 iph->frag_off = htons(0x4000);
 499                 iph->ttl = 0x40;
 500                 iph->protocol = IPPROTO_TCP;
 501                 iph->saddr = htonl(cm_node->loc_addr[0]);
 502                 iph->daddr = htonl(cm_node->rem_addr[0]);
 503         } else {
 504                 sqbuf->ipv4 = false;
 505                 ip6h = (struct ipv6hdr *)buf;
 506                 buf += sizeof(*ip6h);
 507                 tcph = (struct tcphdr *)buf;
 508                 buf += sizeof(*tcph);
 509
 510                 ether_addr_copy(ethh->h_dest, cm_node->rem_mac);
 511                 ether_addr_copy(ethh->h_source, cm_node->loc_mac);
 512                 if (cm_node->vlan_id < VLAN_N_VID) {
 513                         ((struct vlan_ethhdr *)ethh)->h_vlan_proto =
 514                                 htons(ETH_P_8021Q);
 515                         vtag = (cm_node->user_pri << VLAN_PRIO_SHIFT) |
 516                                cm_node->vlan_id;
 517                         ((struct vlan_ethhdr *)ethh)->h_vlan_TCI = htons(vtag);
 518                         ((struct vlan_ethhdr *)ethh)->h_vlan_encapsulated_proto =
 519                                 htons(ETH_P_IPV6);
 520                 } else {
 521                         ethh->h_proto = htons(ETH_P_IPV6);
 522                 }
 523                 ip6h->version = 6;
 524                 ip6h->priority = cm_node->tos >> 4;
 525                 ip6h->flow_lbl[0] = cm_node->tos << 4;
 526                 ip6h->flow_lbl[1] = 0;
 527                 ip6h->flow_lbl[2] = 0;
 528                 ip6h->payload_len = htons(pktsize - sizeof(*ip6h));
 529                 ip6h->nexthdr = 6;
 530                 ip6h->hop_limit = 128;
 531                 irdma_copy_ip_htonl(ip6h->saddr.in6_u.u6_addr32,
 532                                     cm_node->loc_addr);
 533                 irdma_copy_ip_htonl(ip6h->daddr.in6_u.u6_addr32,
 534                                     cm_node->rem_addr);
 535         }
 536
 537         tcph->source = htons(cm_node->loc_port);
 538         tcph->dest = htons(cm_node->rem_port);
 539         tcph->seq = htonl(cm_node->tcp_cntxt.loc_seq_num);
 540
 541         if (flags & SET_ACK) {
 542                 cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt;
 543                 tcph->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num);
 544                 tcph->ack = 1;
 545         } else {
 546                 tcph->ack_seq = 0;
 547         }
 548
 549         if (flags & SET_SYN) {
 550                 cm_node->tcp_cntxt.loc_seq_num++;
 551                 tcph->syn = 1;
 552         } else {
 553                 cm_node->tcp_cntxt.loc_seq_num += hdr_len + pd_len;
 554         }
 555
 556         if (flags & SET_FIN) {
 557                 cm_node->tcp_cntxt.loc_seq_num++;
 558                 tcph->fin = 1;
 559         }
 560
 561         if (flags & SET_RST)
 562                 tcph->rst = 1;
 563
 564         tcph->doff = (u16)((sizeof(*tcph) + opts_len + 3) >> 2);
 565         sqbuf->tcphlen = tcph->doff << 2;
 566         tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd);
 567         tcph->urg_ptr = 0;
 568
 569         if (opts_len) {
 570                 memcpy(buf, options->addr, opts_len);
 571                 buf += opts_len;
 572         }
 573
 574         if (hdr_len) {
 575                 memcpy(buf, hdr->addr, hdr_len);
 576                 buf += hdr_len;
 577         }
 578
 579         if (pdata && pdata->addr)
 580                 memcpy(buf, pdata->addr, pdata->size);
 581
 582         refcount_set(&sqbuf->refcount, 1);
 583
 584         print_hex_dump_debug("ILQ: TRANSMIT ILQ BUFFER", DUMP_PREFIX_OFFSET,
 585                              16, 8, sqbuf->mem.va, sqbuf->totallen, false);
 586         return sqbuf;
 587 }
 588
 589 /**
 590  * irdma_send_reset - Send RST packet
 591  * @cm_node: connection's node
 592  */
 593 int irdma_send_reset(struct irdma_cm_node *cm_node)
 594 {
 595         struct irdma_puda_buf *sqbuf;
 596         int flags = SET_RST | SET_ACK;
 597
 598         trace_irdma_send_reset(cm_node, 0, __builtin_return_address(0));
 599         sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, NULL, NULL,
 600                                                 flags);
 601         if (!sqbuf)
 602                 return -ENOMEM;
 603
 604         ibdev_dbg(&cm_node->iwdev->ibdev,
 605                   "CM: caller: %pS cm_node %p cm_id=%p accel=%d state=%d rem_port=0x%04x, loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4\n",
 606                   __builtin_return_address(0), cm_node, cm_node->cm_id,
 607                   cm_node->accelerated, cm_node->state, cm_node->rem_port,
 608                   cm_node->loc_port, cm_node->rem_addr, cm_node->loc_addr);
 609
 610         return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 0,
 611                                        1);
 612 }
 613
 614 /**
 615  * irdma_active_open_err - send event for active side cm error
 616  * @cm_node: connection's node
 617  * @reset: Flag to send reset or not
 618  */
 619 static void irdma_active_open_err(struct irdma_cm_node *cm_node, bool reset)
 620 {
 621         trace_irdma_active_open_err(cm_node, reset,
 622                                     __builtin_return_address(0));
 623         irdma_cleanup_retrans_entry(cm_node);
 624         cm_node->cm_core->stats_connect_errs++;
 625         if (reset) {
 626                 ibdev_dbg(&cm_node->iwdev->ibdev,
 627                           "CM: cm_node=%p state=%d\n", cm_node,
 628                           cm_node->state);
 629                 refcount_inc(&cm_node->refcnt);
 630                 irdma_send_reset(cm_node);
 631         }
 632
 633         cm_node->state = IRDMA_CM_STATE_CLOSED;
 634         irdma_create_event(cm_node, IRDMA_CM_EVENT_ABORTED);
 635 }
 636
 637 /**
 638  * irdma_passive_open_err - handle passive side cm error
 639  * @cm_node: connection's node
 640  * @reset: send reset or just free cm_node
 641  */
 642 static void irdma_passive_open_err(struct irdma_cm_node *cm_node, bool reset)
 643 {
 644         irdma_cleanup_retrans_entry(cm_node);
 645         cm_node->cm_core->stats_passive_errs++;
 646         cm_node->state = IRDMA_CM_STATE_CLOSED;
 647         ibdev_dbg(&cm_node->iwdev->ibdev, "CM: cm_node=%p state =%d\n",
 648                   cm_node, cm_node->state);
 649         trace_irdma_passive_open_err(cm_node, reset,
 650                                      __builtin_return_address(0));
 651         if (reset)
 652                 irdma_send_reset(cm_node);
 653         else
 654                 irdma_rem_ref_cm_node(cm_node);
 655 }
 656
 657 /**
 658  * irdma_event_connect_error - to create connect error event
 659  * @event: cm information for connect event
 660  */
 661 static void irdma_event_connect_error(struct irdma_cm_event *event)
 662 {
 663         struct irdma_qp *iwqp;
 664         struct iw_cm_id *cm_id;
 665
 666         cm_id = event->cm_node->cm_id;
 667         if (!cm_id)
 668                 return;
 669
 670         iwqp = cm_id->provider_data;
 671
 672         if (!iwqp || !iwqp->iwdev)
 673                 return;
 674
 675         iwqp->cm_id = NULL;
 676         cm_id->provider_data = NULL;
 677         irdma_send_cm_event(event->cm_node, cm_id, IW_CM_EVENT_CONNECT_REPLY,
 678                             -ECONNRESET);
 679         irdma_rem_ref_cm_node(event->cm_node);
 680 }
 681
 682 /**
 683  * irdma_process_options - process options from TCP header
 684  * @cm_node: connection's node
 685  * @optionsloc: point to start of options
 686  * @optionsize: size of all options
 687  * @syn_pkt: flag if syn packet
 688  */
 689 static int irdma_process_options(struct irdma_cm_node *cm_node, u8 *optionsloc,
 690                                  u32 optionsize, u32 syn_pkt)
 691 {
 692         u32 tmp;
 693         u32 offset = 0;
 694         union all_known_options *all_options;
 695         char got_mss_option = 0;
 696
 697         while (offset < optionsize) {
 698                 all_options = (union all_known_options *)(optionsloc + offset);
 699                 switch (all_options->base.optionnum) {
 700                 case OPTION_NUM_EOL:
 701                         offset = optionsize;
 702                         break;
 703                 case OPTION_NUM_NONE:
 704                         offset += 1;
 705                         continue;
 706                 case OPTION_NUM_MSS:
 707                         ibdev_dbg(&cm_node->iwdev->ibdev,
 708                                   "CM: MSS Length: %d Offset: %d Size: %d\n",
 709                                   all_options->mss.len, offset, optionsize);
 710                         got_mss_option = 1;
 711                         if (all_options->mss.len != 4)
 712                                 return -EINVAL;
 713                         tmp = ntohs(all_options->mss.mss);
 714                         if ((cm_node->ipv4 &&
 715                              (tmp + IRDMA_MTU_TO_MSS_IPV4) < IRDMA_MIN_MTU_IPV4) ||
 716                             (!cm_node->ipv4 &&
 717                              (tmp + IRDMA_MTU_TO_MSS_IPV6) < IRDMA_MIN_MTU_IPV6))
 718                                 return -EINVAL;
 719                         if (tmp < cm_node->tcp_cntxt.mss)
 720                                 cm_node->tcp_cntxt.mss = tmp;
 721                         break;
 722                 case OPTION_NUM_WINDOW_SCALE:
 723                         cm_node->tcp_cntxt.snd_wscale =
 724                                 all_options->windowscale.shiftcount;
 725                         break;
 726                 default:
 727                         ibdev_dbg(&cm_node->iwdev->ibdev,
 728                                   "CM: Unsupported TCP Option: %x\n",
 729                                   all_options->base.optionnum);
 730                         break;
 731                 }
 732                 offset += all_options->base.len;
 733         }
 734         if (!got_mss_option && syn_pkt)
 735                 cm_node->tcp_cntxt.mss = IRDMA_CM_DEFAULT_MSS;
 736
 737         return 0;
 738 }
 739
 740 /**
 741  * irdma_handle_tcp_options - setup TCP context info after parsing TCP options
 742  * @cm_node: connection's node
 743  * @tcph: pointer tcp header
 744  * @optionsize: size of options rcvd
 745  * @passive: active or passive flag
 746  */
 747 static int irdma_handle_tcp_options(struct irdma_cm_node *cm_node,
 748                                     struct tcphdr *tcph, int optionsize,
 749                                     int passive)
 750 {
 751         u8 *optionsloc = (u8 *)&tcph[1];
 752         int ret;
 753
 754         if (optionsize) {
 755                 ret = irdma_process_options(cm_node, optionsloc, optionsize,
 756                                             (u32)tcph->syn);
 757                 if (ret) {
 758                         ibdev_dbg(&cm_node->iwdev->ibdev,
 759                                   "CM: Node %p, Sending Reset\n", cm_node);
 760                         if (passive)
 761                                 irdma_passive_open_err(cm_node, true);
 762                         else
 763                                 irdma_active_open_err(cm_node, true);
 764                         return ret;
 765                 }
 766         }
 767
 768         cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->window)
 769                                      << cm_node->tcp_cntxt.snd_wscale;
 770
 771         if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd)
 772                 cm_node->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.snd_wnd;
 773
 774         return 0;
 775 }
 776
 777 /**
 778  * irdma_build_mpa_v1 - build a MPA V1 frame
 779  * @cm_node: connection's node
 780  * @start_addr: address where to build frame
 781  * @mpa_key: to do read0 or write0
 782  */
 783 static void irdma_build_mpa_v1(struct irdma_cm_node *cm_node, void *start_addr,
 784                                u8 mpa_key)
 785 {
 786         struct ietf_mpa_v1 *mpa_frame = start_addr;
 787
 788         switch (mpa_key) {
 789         case MPA_KEY_REQUEST:
 790                 memcpy(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE);
 791                 break;
 792         case MPA_KEY_REPLY:
 793                 memcpy(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE);
 794                 break;
 795         default:
 796                 break;
 797         }
 798         mpa_frame->flags = IETF_MPA_FLAGS_CRC;
 799         mpa_frame->rev = cm_node->mpa_frame_rev;
 800         mpa_frame->priv_data_len = htons(cm_node->pdata.size);
 801 }
 802
 803 /**
 804  * irdma_build_mpa_v2 - build a MPA V2 frame
 805  * @cm_node: connection's node
 806  * @start_addr: buffer start address
 807  * @mpa_key: to do read0 or write0
 808  */
 809 static void irdma_build_mpa_v2(struct irdma_cm_node *cm_node, void *start_addr,
 810                                u8 mpa_key)
 811 {
 812         struct ietf_mpa_v2 *mpa_frame = start_addr;
 813         struct ietf_rtr_msg *rtr_msg = &mpa_frame->rtr_msg;
 814         u16 ctrl_ird, ctrl_ord;
 815
 816         /* initialize the upper 5 bytes of the frame */
 817         irdma_build_mpa_v1(cm_node, start_addr, mpa_key);
 818         mpa_frame->flags |= IETF_MPA_V2_FLAG;
 819         if (cm_node->iwdev->iw_ooo) {
 820                 mpa_frame->flags |= IETF_MPA_FLAGS_MARKERS;
 821                 cm_node->rcv_mark_en = true;
 822         }
 823         mpa_frame->priv_data_len = cpu_to_be16(be16_to_cpu(mpa_frame->priv_data_len) +
 824                                                IETF_RTR_MSG_SIZE);
 825
 826         /* initialize RTR msg */
 827         if (cm_node->mpav2_ird_ord == IETF_NO_IRD_ORD) {
 828                 ctrl_ird = IETF_NO_IRD_ORD;
 829                 ctrl_ord = IETF_NO_IRD_ORD;
 830         } else {
 831                 ctrl_ird = (cm_node->ird_size > IETF_NO_IRD_ORD) ?
 832                                    IETF_NO_IRD_ORD :
 833                                    cm_node->ird_size;
 834                 ctrl_ord = (cm_node->ord_size > IETF_NO_IRD_ORD) ?
 835                                    IETF_NO_IRD_ORD :
 836                                    cm_node->ord_size;
 837         }
 838         ctrl_ird |= IETF_PEER_TO_PEER;
 839
 840         switch (mpa_key) {
 841         case MPA_KEY_REQUEST:
 842                 ctrl_ord |= IETF_RDMA0_WRITE;
 843                 ctrl_ord |= IETF_RDMA0_READ;
 844                 break;
 845         case MPA_KEY_REPLY:
 846                 switch (cm_node->send_rdma0_op) {
 847                 case SEND_RDMA_WRITE_ZERO:
 848                         ctrl_ord |= IETF_RDMA0_WRITE;
 849                         break;
 850                 case SEND_RDMA_READ_ZERO:
 851                         ctrl_ord |= IETF_RDMA0_READ;
 852                         break;
 853                 }
 854                 break;
 855         default:
 856                 break;
 857         }
 858         rtr_msg->ctrl_ird = htons(ctrl_ird);
 859         rtr_msg->ctrl_ord = htons(ctrl_ord);
 860 }
 861
 862 /**
 863  * irdma_cm_build_mpa_frame - build mpa frame for mpa version 1 or version 2
 864  * @cm_node: connection's node
 865  * @mpa: mpa: data buffer
 866  * @mpa_key: to do read0 or write0
 867  */
 868 static int irdma_cm_build_mpa_frame(struct irdma_cm_node *cm_node,
 869                                     struct irdma_kmem_info *mpa, u8 mpa_key)
 870 {
 871         int hdr_len = 0;
 872
 873         switch (cm_node->mpa_frame_rev) {
 874         case IETF_MPA_V1:
 875                 hdr_len = sizeof(struct ietf_mpa_v1);
 876                 irdma_build_mpa_v1(cm_node, mpa->addr, mpa_key);
 877                 break;
 878         case IETF_MPA_V2:
 879                 hdr_len = sizeof(struct ietf_mpa_v2);
 880                 irdma_build_mpa_v2(cm_node, mpa->addr, mpa_key);
 881                 break;
 882         default:
 883                 break;
 884         }
 885
 886         return hdr_len;
 887 }
 888
 889 /**
 890  * irdma_send_mpa_request - active node send mpa request to passive node
 891  * @cm_node: connection's node
 892  */
 893 static int irdma_send_mpa_request(struct irdma_cm_node *cm_node)
 894 {
 895         struct irdma_puda_buf *sqbuf;
 896
 897         cm_node->mpa_hdr.addr = &cm_node->mpa_v2_frame;
 898         cm_node->mpa_hdr.size = irdma_cm_build_mpa_frame(cm_node,
 899                                                          &cm_node->mpa_hdr,
 900                                                          MPA_KEY_REQUEST);
 901         if (!cm_node->mpa_hdr.size) {
 902                 ibdev_dbg(&cm_node->iwdev->ibdev,
 903                           "CM: mpa size = %d\n", cm_node->mpa_hdr.size);
 904                 return -EINVAL;
 905         }
 906
 907         sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL,
 908                                                 &cm_node->mpa_hdr,
 909                                                 &cm_node->pdata, SET_ACK);
 910         if (!sqbuf)
 911                 return -ENOMEM;
 912
 913         return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 1,
 914                                        0);
 915 }
 916
 917 /**
 918  * irdma_send_mpa_reject -
 919  * @cm_node: connection's node
 920  * @pdata: reject data for connection
 921  * @plen: length of reject data
 922  */
 923 static int irdma_send_mpa_reject(struct irdma_cm_node *cm_node,
 924                                  const void *pdata, u8 plen)
 925 {
 926         struct irdma_puda_buf *sqbuf;
 927         struct irdma_mpa_priv_info priv_info;
 928
 929         cm_node->mpa_hdr.addr = &cm_node->mpa_v2_frame;
 930         cm_node->mpa_hdr.size = irdma_cm_build_mpa_frame(cm_node,
 931                                                          &cm_node->mpa_hdr,
 932                                                          MPA_KEY_REPLY);
 933
 934         cm_node->mpa_frame.flags |= IETF_MPA_FLAGS_REJECT;
 935         priv_info.addr = pdata;
 936         priv_info.size = plen;
 937
 938         sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL,
 939                                                 &cm_node->mpa_hdr, &priv_info,
 940                                                 SET_ACK | SET_FIN);
 941         if (!sqbuf)
 942                 return -ENOMEM;
 943
 944         cm_node->state = IRDMA_CM_STATE_FIN_WAIT1;
 945
 946         return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 1,
 947                                        0);
 948 }
 949
 950 /**
 951  * irdma_negotiate_mpa_v2_ird_ord - negotiate MPAv2 IRD/ORD
 952  * @cm_node: connection's node
 953  * @buf: Data pointer
 954  */
 955 static int irdma_negotiate_mpa_v2_ird_ord(struct irdma_cm_node *cm_node,
 956                                           u8 *buf)
 957 {
 958         struct ietf_mpa_v2 *mpa_v2_frame;
 959         struct ietf_rtr_msg *rtr_msg;
 960         u16 ird_size;
 961         u16 ord_size;
 962         u16 ctrl_ord;
 963         u16 ctrl_ird;
 964
 965         mpa_v2_frame = (struct ietf_mpa_v2 *)buf;
 966         rtr_msg = &mpa_v2_frame->rtr_msg;
 967
 968         /* parse rtr message */
 969         ctrl_ord = ntohs(rtr_msg->ctrl_ord);
 970         ctrl_ird = ntohs(rtr_msg->ctrl_ird);
 971         ird_size = ctrl_ird & IETF_NO_IRD_ORD;
 972         ord_size = ctrl_ord & IETF_NO_IRD_ORD;
 973
 974         if (!(ctrl_ird & IETF_PEER_TO_PEER))
 975                 return -EOPNOTSUPP;
 976
 977         if (ird_size == IETF_NO_IRD_ORD || ord_size == IETF_NO_IRD_ORD) {
 978                 cm_node->mpav2_ird_ord = IETF_NO_IRD_ORD;
 979                 goto negotiate_done;
 980         }
 981
 982         if (cm_node->state != IRDMA_CM_STATE_MPAREQ_SENT) {
 983                 /* responder */
 984                 if (!ord_size && (ctrl_ord & IETF_RDMA0_READ))
 985                         cm_node->ird_size = 1;
 986                 if (cm_node->ord_size > ird_size)
 987                         cm_node->ord_size = ird_size;
 988         } else {
 989                 /* initiator */
 990                 if (!ird_size && (ctrl_ord & IETF_RDMA0_READ))
 991                         /* Remote peer doesn't support RDMA0_READ */
 992                         return -EOPNOTSUPP;
 993
 994                 if (cm_node->ord_size > ird_size)
 995                         cm_node->ord_size = ird_size;
 996
 997                 if (cm_node->ird_size < ord_size)
 998                 /* no resources available */
 999                         return -EINVAL;
1000         }
1001
1002 negotiate_done:
1003         if (ctrl_ord & IETF_RDMA0_READ)
1004                 cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO;
1005         else if (ctrl_ord & IETF_RDMA0_WRITE)
1006                 cm_node->send_rdma0_op = SEND_RDMA_WRITE_ZERO;
1007         else
1008                 /* Not supported RDMA0 operation */
1009                 return -EOPNOTSUPP;
1010
1011         ibdev_dbg(&cm_node->iwdev->ibdev,
1012                   "CM: MPAV2 Negotiated ORD: %d, IRD: %d\n",
1013                   cm_node->ord_size, cm_node->ird_size);
1014         trace_irdma_negotiate_mpa_v2(cm_node);
1015         return 0;
1016 }
1017
1018 /**
1019  * irdma_parse_mpa - process an IETF MPA frame
1020  * @cm_node: connection's node
1021  * @buf: Data pointer
1022  * @type: to return accept or reject
1023  * @len: Len of mpa buffer
1024  */
1025 static int irdma_parse_mpa(struct irdma_cm_node *cm_node, u8 *buf, u32 *type,
1026                            u32 len)
1027 {
1028         struct ietf_mpa_v1 *mpa_frame;
1029         int mpa_hdr_len, priv_data_len, ret;
1030
1031         *type = IRDMA_MPA_REQUEST_ACCEPT;
1032
1033         if (len < sizeof(struct ietf_mpa_v1)) {
1034                 ibdev_dbg(&cm_node->iwdev->ibdev,
1035                           "CM: ietf buffer small (%x)\n", len);
1036                 return -EINVAL;
1037         }
1038
1039         mpa_frame = (struct ietf_mpa_v1 *)buf;
1040         mpa_hdr_len = sizeof(struct ietf_mpa_v1);
1041         priv_data_len = ntohs(mpa_frame->priv_data_len);
1042
1043         if (priv_data_len > IETF_MAX_PRIV_DATA_LEN) {
1044                 ibdev_dbg(&cm_node->iwdev->ibdev,
1045                           "CM: private_data too big %d\n", priv_data_len);
1046                 return -EOVERFLOW;
1047         }
1048
1049         if (mpa_frame->rev != IETF_MPA_V1 && mpa_frame->rev != IETF_MPA_V2) {
1050                 ibdev_dbg(&cm_node->iwdev->ibdev,
1051                           "CM: unsupported mpa rev = %d\n", mpa_frame->rev);
1052                 return -EINVAL;
1053         }
1054
1055         if (mpa_frame->rev > cm_node->mpa_frame_rev) {
1056                 ibdev_dbg(&cm_node->iwdev->ibdev, "CM: rev %d\n",
1057                           mpa_frame->rev);
1058                 return -EINVAL;
1059         }
1060
1061         cm_node->mpa_frame_rev = mpa_frame->rev;
1062         if (cm_node->state != IRDMA_CM_STATE_MPAREQ_SENT) {
1063                 if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REQ,
1064                            IETF_MPA_KEY_SIZE)) {
1065                         ibdev_dbg(&cm_node->iwdev->ibdev,
1066                                   "CM: Unexpected MPA Key received\n");
1067                         return -EINVAL;
1068                 }
1069         } else {
1070                 if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REP,
1071                            IETF_MPA_KEY_SIZE)) {
1072                         ibdev_dbg(&cm_node->iwdev->ibdev,
1073                                   "CM: Unexpected MPA Key received\n");
1074                         return -EINVAL;
1075                 }
1076         }
1077
1078         if (priv_data_len + mpa_hdr_len > len) {
1079                 ibdev_dbg(&cm_node->iwdev->ibdev,
1080                           "CM: ietf buffer len(%x + %x != %x)\n",
1081                           priv_data_len, mpa_hdr_len, len);
1082                 return -EOVERFLOW;
1083         }
1084
1085         if (len > IRDMA_MAX_CM_BUF) {
1086                 ibdev_dbg(&cm_node->iwdev->ibdev,
1087                           "CM: ietf buffer large len = %d\n", len);
1088                 return -EOVERFLOW;
1089         }
1090
1091         switch (mpa_frame->rev) {
1092         case IETF_MPA_V2:
1093                 mpa_hdr_len += IETF_RTR_MSG_SIZE;
1094                 ret = irdma_negotiate_mpa_v2_ird_ord(cm_node, buf);
1095                 if (ret)
1096                         return ret;
1097                 break;
1098         case IETF_MPA_V1:
1099         default:
1100                 break;
1101         }
1102
1103         memcpy(cm_node->pdata_buf, buf + mpa_hdr_len, priv_data_len);
1104         cm_node->pdata.size = priv_data_len;
1105
1106         if (mpa_frame->flags & IETF_MPA_FLAGS_REJECT)
1107                 *type = IRDMA_MPA_REQUEST_REJECT;
1108
1109         if (mpa_frame->flags & IETF_MPA_FLAGS_MARKERS)
1110                 cm_node->snd_mark_en = true;
1111
1112         return 0;
1113 }
1114
1115 /**
1116  * irdma_schedule_cm_timer
1117  * @cm_node: connection's node
1118  * @sqbuf: buffer to send
1119  * @type: if it is send or close
1120  * @send_retrans: if rexmits to be done
1121  * @close_when_complete: is cm_node to be removed
1122  *
1123  * note - cm_node needs to be protected before calling this. Encase in:
1124  *              irdma_rem_ref_cm_node(cm_core, cm_node);
1125  *              irdma_schedule_cm_timer(...)
1126  *              refcount_inc(&cm_node->refcnt);
1127  */
1128 int irdma_schedule_cm_timer(struct irdma_cm_node *cm_node,
1129                             struct irdma_puda_buf *sqbuf,
1130                             enum irdma_timer_type type, int send_retrans,
1131                             int close_when_complete)
1132 {
1133         struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi;
1134         struct irdma_cm_core *cm_core = cm_node->cm_core;
1135         struct irdma_timer_entry *new_send;
1136         u32 was_timer_set;
1137         unsigned long flags;
1138
1139         new_send = kzalloc(sizeof(*new_send), GFP_ATOMIC);
1140         if (!new_send) {
1141                 if (type != IRDMA_TIMER_TYPE_CLOSE)
1142                         irdma_free_sqbuf(vsi, sqbuf);
1143                 return -ENOMEM;
1144         }
1145
1146         new_send->retrycount = IRDMA_DEFAULT_RETRYS;
1147         new_send->retranscount = IRDMA_DEFAULT_RETRANS;
1148         new_send->sqbuf = sqbuf;
1149         new_send->timetosend = jiffies;
1150         new_send->type = type;
1151         new_send->send_retrans = send_retrans;
1152         new_send->close_when_complete = close_when_complete;
1153
1154         if (type == IRDMA_TIMER_TYPE_CLOSE) {
1155                 new_send->timetosend += (HZ / 10);
1156                 if (cm_node->close_entry) {
1157                         kfree(new_send);
1158                         ibdev_dbg(&cm_node->iwdev->ibdev,
1159                                   "CM: already close entry\n");
1160                         return -EINVAL;
1161                 }
1162
1163                 cm_node->close_entry = new_send;
1164         } else { /* type == IRDMA_TIMER_TYPE_SEND */
1165                 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1166                 cm_node->send_entry = new_send;
1167                 refcount_inc(&cm_node->refcnt);
1168                 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
1169                 new_send->timetosend = jiffies + IRDMA_RETRY_TIMEOUT;
1170
1171                 refcount_inc(&sqbuf->refcount);
1172                 irdma_puda_send_buf(vsi->ilq, sqbuf);
1173                 if (!send_retrans) {
1174                         irdma_cleanup_retrans_entry(cm_node);
1175                         if (close_when_complete)
1176                                 irdma_rem_ref_cm_node(cm_node);
1177                         return 0;
1178                 }
1179         }
1180
1181         spin_lock_irqsave(&cm_core->ht_lock, flags);
1182         was_timer_set = timer_pending(&cm_core->tcp_timer);
1183
1184         if (!was_timer_set) {
1185                 cm_core->tcp_timer.expires = new_send->timetosend;
1186                 add_timer(&cm_core->tcp_timer);
1187         }
1188         spin_unlock_irqrestore(&cm_core->ht_lock, flags);
1189
1190         return 0;
1191 }
1192
1193 /**
1194  * irdma_retrans_expired - Could not rexmit the packet
1195  * @cm_node: connection's node
1196  */
1197 static void irdma_retrans_expired(struct irdma_cm_node *cm_node)
1198 {
1199         enum irdma_cm_node_state state = cm_node->state;
1200
1201         cm_node->state = IRDMA_CM_STATE_CLOSED;
1202         switch (state) {
1203         case IRDMA_CM_STATE_SYN_RCVD:
1204         case IRDMA_CM_STATE_CLOSING:
1205                 irdma_rem_ref_cm_node(cm_node);
1206                 break;
1207         case IRDMA_CM_STATE_FIN_WAIT1:
1208         case IRDMA_CM_STATE_LAST_ACK:
1209                 irdma_send_reset(cm_node);
1210                 break;
1211         default:
1212                 refcount_inc(&cm_node->refcnt);
1213                 irdma_send_reset(cm_node);
1214                 irdma_create_event(cm_node, IRDMA_CM_EVENT_ABORTED);
1215                 break;
1216         }
1217 }
1218
1219 /**
1220  * irdma_handle_close_entry - for handling retry/timeouts
1221  * @cm_node: connection's node
1222  * @rem_node: flag for remove cm_node
1223  */
1224 static void irdma_handle_close_entry(struct irdma_cm_node *cm_node,
1225                                      u32 rem_node)
1226 {
1227         struct irdma_timer_entry *close_entry = cm_node->close_entry;
1228         struct irdma_qp *iwqp;
1229         unsigned long flags;
1230
1231         if (!close_entry)
1232                 return;
1233         iwqp = (struct irdma_qp *)close_entry->sqbuf;
1234         if (iwqp) {
1235                 spin_lock_irqsave(&iwqp->lock, flags);
1236                 if (iwqp->cm_id) {
1237                         iwqp->hw_tcp_state = IRDMA_TCP_STATE_CLOSED;
1238                         iwqp->hw_iwarp_state = IRDMA_QP_STATE_ERROR;
1239                         iwqp->last_aeq = IRDMA_AE_RESET_SENT;
1240                         iwqp->ibqp_state = IB_QPS_ERR;
1241                         spin_unlock_irqrestore(&iwqp->lock, flags);
1242                         irdma_cm_disconn(iwqp);
1243                 } else {
1244                         spin_unlock_irqrestore(&iwqp->lock, flags);
1245                 }
1246         } else if (rem_node) {
1247                 /* TIME_WAIT state */
1248                 irdma_rem_ref_cm_node(cm_node);
1249         }
1250
1251         kfree(close_entry);
1252         cm_node->close_entry = NULL;
1253 }
1254
1255 /**
1256  * irdma_cm_timer_tick - system's timer expired callback
1257  * @t: Pointer to timer_list
1258  */
1259 static void irdma_cm_timer_tick(struct timer_list *t)
1260 {
1261         unsigned long nexttimeout = jiffies + IRDMA_LONG_TIME;
1262         struct irdma_cm_node *cm_node;
1263         struct irdma_timer_entry *send_entry, *close_entry;
1264         struct list_head *list_core_temp;
1265         struct list_head *list_node;
1266         struct irdma_cm_core *cm_core = from_timer(cm_core, t, tcp_timer);
1267         struct irdma_sc_vsi *vsi;
1268         u32 settimer = 0;
1269         unsigned long timetosend;
1270         unsigned long flags;
1271         struct list_head timer_list;
1272
1273         INIT_LIST_HEAD(&timer_list);
1274
1275         rcu_read_lock();
1276         irdma_timer_list_prep(cm_core, &timer_list);
1277         rcu_read_unlock();
1278
1279         list_for_each_safe (list_node, list_core_temp, &timer_list) {
1280                 cm_node = container_of(list_node, struct irdma_cm_node,
1281                                        timer_entry);
1282                 close_entry = cm_node->close_entry;
1283
1284                 if (close_entry) {
1285                         if (time_after(close_entry->timetosend, jiffies)) {
1286                                 if (nexttimeout > close_entry->timetosend ||
1287                                     !settimer) {
1288                                         nexttimeout = close_entry->timetosend;
1289                                         settimer = 1;
1290                                 }
1291                         } else {
1292                                 irdma_handle_close_entry(cm_node, 1);
1293                         }
1294                 }
1295
1296                 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1297
1298                 send_entry = cm_node->send_entry;
1299                 if (!send_entry)
1300                         goto done;
1301                 if (time_after(send_entry->timetosend, jiffies)) {
1302                         if (cm_node->state != IRDMA_CM_STATE_OFFLOADED) {
1303                                 if (nexttimeout > send_entry->timetosend ||
1304                                     !settimer) {
1305                                         nexttimeout = send_entry->timetosend;
1306                                         settimer = 1;
1307                                 }
1308                         } else {
1309                                 irdma_free_retrans_entry(cm_node);
1310                         }
1311                         goto done;
1312                 }
1313
1314                 if (cm_node->state == IRDMA_CM_STATE_OFFLOADED ||
1315                     cm_node->state == IRDMA_CM_STATE_CLOSED) {
1316                         irdma_free_retrans_entry(cm_node);
1317                         goto done;
1318                 }
1319
1320                 if (!send_entry->retranscount || !send_entry->retrycount) {
1321                         irdma_free_retrans_entry(cm_node);
1322
1323                         spin_unlock_irqrestore(&cm_node->retrans_list_lock,
1324                                                flags);
1325                         irdma_retrans_expired(cm_node);
1326                         cm_node->state = IRDMA_CM_STATE_CLOSED;
1327                         spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1328                         goto done;
1329                 }
1330                 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
1331
1332                 vsi = &cm_node->iwdev->vsi;
1333                 if (!cm_node->ack_rcvd) {
1334                         refcount_inc(&send_entry->sqbuf->refcount);
1335                         irdma_puda_send_buf(vsi->ilq, send_entry->sqbuf);
1336                         cm_node->cm_core->stats_pkt_retrans++;
1337                 }
1338
1339                 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1340                 if (send_entry->send_retrans) {
1341                         send_entry->retranscount--;
1342                         timetosend = (IRDMA_RETRY_TIMEOUT <<
1343                                       (IRDMA_DEFAULT_RETRANS -
1344                                        send_entry->retranscount));
1345
1346                         send_entry->timetosend = jiffies +
1347                             min(timetosend, IRDMA_MAX_TIMEOUT);
1348                         if (nexttimeout > send_entry->timetosend || !settimer) {
1349                                 nexttimeout = send_entry->timetosend;
1350                                 settimer = 1;
1351                         }
1352                 } else {
1353                         int close_when_complete;
1354
1355                         close_when_complete = send_entry->close_when_complete;
1356                         irdma_free_retrans_entry(cm_node);
1357                         if (close_when_complete)
1358                                 irdma_rem_ref_cm_node(cm_node);
1359                 }
1360 done:
1361                 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
1362                 irdma_rem_ref_cm_node(cm_node);
1363         }
1364
1365         if (settimer) {
1366                 spin_lock_irqsave(&cm_core->ht_lock, flags);
1367                 if (!timer_pending(&cm_core->tcp_timer)) {
1368                         cm_core->tcp_timer.expires = nexttimeout;
1369                         add_timer(&cm_core->tcp_timer);
1370                 }
1371                 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
1372         }
1373 }
1374
1375 /**
1376  * irdma_send_syn - send SYN packet
1377  * @cm_node: connection's node
1378  * @sendack: flag to set ACK bit or not
1379  */
1380 int irdma_send_syn(struct irdma_cm_node *cm_node, u32 sendack)
1381 {
1382         struct irdma_puda_buf *sqbuf;
1383         int flags = SET_SYN;
1384         char optionsbuf[sizeof(struct option_mss) +
1385                         sizeof(struct option_windowscale) +
1386                         sizeof(struct option_base) + TCP_OPTIONS_PADDING];
1387         struct irdma_kmem_info opts;
1388         int optionssize = 0;
1389         /* Sending MSS option */
1390         union all_known_options *options;
1391
1392         opts.addr = optionsbuf;
1393         if (!cm_node)
1394                 return -EINVAL;
1395
1396         options = (union all_known_options *)&optionsbuf[optionssize];
1397         options->mss.optionnum = OPTION_NUM_MSS;
1398         options->mss.len = sizeof(struct option_mss);
1399         options->mss.mss = htons(cm_node->tcp_cntxt.mss);
1400         optionssize += sizeof(struct option_mss);
1401
1402         options = (union all_known_options *)&optionsbuf[optionssize];
1403         options->windowscale.optionnum = OPTION_NUM_WINDOW_SCALE;
1404         options->windowscale.len = sizeof(struct option_windowscale);
1405         options->windowscale.shiftcount = cm_node->tcp_cntxt.rcv_wscale;
1406         optionssize += sizeof(struct option_windowscale);
1407         options = (union all_known_options *)&optionsbuf[optionssize];
1408         options->eol = OPTION_NUM_EOL;
1409         optionssize += 1;
1410
1411         if (sendack)
1412                 flags |= SET_ACK;
1413
1414         opts.size = optionssize;
1415
1416         sqbuf = cm_node->cm_core->form_cm_frame(cm_node, &opts, NULL, NULL,
1417                                                 flags);
1418         if (!sqbuf)
1419                 return -ENOMEM;
1420
1421         return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 1,
1422                                        0);
1423 }
1424
1425 /**
1426  * irdma_send_ack - Send ACK packet
1427  * @cm_node: connection's node
1428  */
1429 void irdma_send_ack(struct irdma_cm_node *cm_node)
1430 {
1431         struct irdma_puda_buf *sqbuf;
1432         struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi;
1433
1434         sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, NULL, NULL,
1435                                                 SET_ACK);
1436         if (sqbuf)
1437                 irdma_puda_send_buf(vsi->ilq, sqbuf);
1438 }
1439
1440 /**
1441  * irdma_send_fin - Send FIN pkt
1442  * @cm_node: connection's node
1443  */
1444 static int irdma_send_fin(struct irdma_cm_node *cm_node)
1445 {
1446         struct irdma_puda_buf *sqbuf;
1447
1448         sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, NULL, NULL,
1449                                                 SET_ACK | SET_FIN);
1450         if (!sqbuf)
1451                 return -ENOMEM;
1452
1453         return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 1,
1454                                        0);
1455 }
1456
1457 /**
1458  * irdma_find_listener - find a cm node listening on this addr-port pair
1459  * @cm_core: cm's core
1460  * @dst_addr: listener ip addr
1461  * @ipv4: flag indicating IPv4 when true
1462  * @dst_port: listener tcp port num
1463  * @vlan_id: virtual LAN ID
1464  * @listener_state: state to match with listen node's
1465  */
1466 static struct irdma_cm_listener *
1467 irdma_find_listener(struct irdma_cm_core *cm_core, u32 *dst_addr, bool ipv4,
1468                     u16 dst_port, u16 vlan_id,
1469                     enum irdma_cm_listener_state listener_state)
1470 {
1471         struct irdma_cm_listener *listen_node;
1472         static const u32 ip_zero[4] = { 0, 0, 0, 0 };
1473         u32 listen_addr[4];
1474         u16 listen_port;
1475         unsigned long flags;
1476
1477         /* walk list and find cm_node associated with this session ID */
1478         spin_lock_irqsave(&cm_core->listen_list_lock, flags);
1479         list_for_each_entry (listen_node, &cm_core->listen_list, list) {
1480                 memcpy(listen_addr, listen_node->loc_addr, sizeof(listen_addr));
1481                 listen_port = listen_node->loc_port;
1482                 if (listen_node->ipv4 != ipv4 || listen_port != dst_port ||
1483                     !(listener_state & listen_node->listener_state))
1484                         continue;
1485                 /* compare node pair, return node handle if a match */
1486                 if (!memcmp(listen_addr, ip_zero, sizeof(listen_addr)) ||
1487                     (!memcmp(listen_addr, dst_addr, sizeof(listen_addr)) &&
1488                      vlan_id == listen_node->vlan_id)) {
1489                         refcount_inc(&listen_node->refcnt);
1490                         spin_unlock_irqrestore(&cm_core->listen_list_lock,
1491                                                flags);
1492                         trace_irdma_find_listener(listen_node);
1493                         return listen_node;
1494                 }
1495         }
1496         spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
1497
1498         return NULL;
1499 }
1500
1501 /**
1502  * irdma_del_multiple_qhash - Remove qhash and child listens
1503  * @iwdev: iWarp device
1504  * @cm_info: CM info for parent listen node
1505  * @cm_parent_listen_node: The parent listen node
1506  */
1507 static int irdma_del_multiple_qhash(struct irdma_device *iwdev,
1508                                     struct irdma_cm_info *cm_info,
1509                                     struct irdma_cm_listener *cm_parent_listen_node)
1510 {
1511         struct irdma_cm_listener *child_listen_node;
1512         struct list_head *pos, *tpos;
1513         unsigned long flags;
1514         int ret = -EINVAL;
1515
1516         spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, flags);
1517         list_for_each_safe (pos, tpos,
1518                             &cm_parent_listen_node->child_listen_list) {
1519                 child_listen_node = list_entry(pos, struct irdma_cm_listener,
1520                                                child_listen_list);
1521                 if (child_listen_node->ipv4)
1522                         ibdev_dbg(&iwdev->ibdev,
1523                                   "CM: removing child listen for IP=%pI4, port=%d, vlan=%d\n",
1524                                   child_listen_node->loc_addr,
1525                                   child_listen_node->loc_port,
1526                                   child_listen_node->vlan_id);
1527                 else
1528                         ibdev_dbg(&iwdev->ibdev,
1529                                   "CM: removing child listen for IP=%pI6, port=%d, vlan=%d\n",
1530                                   child_listen_node->loc_addr,
1531                                   child_listen_node->loc_port,
1532                                   child_listen_node->vlan_id);
1533                 trace_irdma_del_multiple_qhash(child_listen_node);
1534                 list_del(pos);
1535                 memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
1536                        sizeof(cm_info->loc_addr));
1537                 cm_info->vlan_id = child_listen_node->vlan_id;
1538                 if (child_listen_node->qhash_set) {
1539                         ret = irdma_manage_qhash(iwdev, cm_info,
1540                                                  IRDMA_QHASH_TYPE_TCP_SYN,
1541                                                  IRDMA_QHASH_MANAGE_TYPE_DELETE,
1542                                                  NULL, false);
1543                         child_listen_node->qhash_set = false;
1544                 } else {
1545                         ret = 0;
1546                 }
1547                 ibdev_dbg(&iwdev->ibdev,
1548                           "CM: Child listen node freed = %p\n",
1549                           child_listen_node);
1550                 kfree(child_listen_node);
1551                 cm_parent_listen_node->cm_core->stats_listen_nodes_destroyed++;
1552         }
1553         spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
1554
1555         return ret;
1556 }
1557
1558 static u8 irdma_iw_get_vlan_prio(u32 *loc_addr, u8 prio, bool ipv4)
1559 {
1560         struct net_device *ndev = NULL;
1561
1562         rcu_read_lock();
1563         if (ipv4) {
1564                 ndev = ip_dev_find(&init_net, htonl(loc_addr[0]));
1565         } else if (IS_ENABLED(CONFIG_IPV6)) {
1566                 struct net_device *ip_dev;
1567                 struct in6_addr laddr6;
1568
1569                 irdma_copy_ip_htonl(laddr6.in6_u.u6_addr32, loc_addr);
1570
1571                 for_each_netdev_rcu (&init_net, ip_dev) {
1572                         if (ipv6_chk_addr(&init_net, &laddr6, ip_dev, 1)) {
1573                                 ndev = ip_dev;
1574                                 break;
1575                         }
1576                 }
1577         }
1578
1579         if (!ndev)
1580                 goto done;
1581         if (is_vlan_dev(ndev))
1582                 prio = (vlan_dev_get_egress_qos_mask(ndev, prio) & VLAN_PRIO_MASK)
1583                         >> VLAN_PRIO_SHIFT;
1584         if (ipv4)
1585                 dev_put(ndev);
1586
1587 done:
1588         rcu_read_unlock();
1589
1590         return prio;
1591 }
1592
1593 /**
1594  * irdma_get_vlan_mac_ipv6 - Gets the vlan and mac
1595  * @addr: local IPv6 address
1596  * @vlan_id: vlan id for the given IPv6 address
1597  * @mac: mac address for the given IPv6 address
1598  *
1599  * Returns the vlan id and mac for an IPv6 address.
1600  */
1601 void irdma_get_vlan_mac_ipv6(u32 *addr, u16 *vlan_id, u8 *mac)
1602 {
1603         struct net_device *ip_dev = NULL;
1604         struct in6_addr laddr6;
1605
1606         if (!IS_ENABLED(CONFIG_IPV6))
1607                 return;
1608
1609         irdma_copy_ip_htonl(laddr6.in6_u.u6_addr32, addr);
1610         if (vlan_id)
1611                 *vlan_id = 0xFFFF;      /* Match rdma_vlan_dev_vlan_id() */
1612         if (mac)
1613                 eth_zero_addr(mac);
1614
1615         rcu_read_lock();
1616         for_each_netdev_rcu (&init_net, ip_dev) {
1617                 if (ipv6_chk_addr(&init_net, &laddr6, ip_dev, 1)) {
1618                         if (vlan_id)
1619                                 *vlan_id = rdma_vlan_dev_vlan_id(ip_dev);
1620                         if (ip_dev->dev_addr && mac)
1621                                 ether_addr_copy(mac, ip_dev->dev_addr);
1622                         break;
1623                 }
1624         }
1625         rcu_read_unlock();
1626 }
1627
1628 /**
1629  * irdma_get_vlan_ipv4 - Returns the vlan_id for IPv4 address
1630  * @addr: local IPv4 address
1631  */
1632 u16 irdma_get_vlan_ipv4(u32 *addr)
1633 {
1634         struct net_device *netdev;
1635         u16 vlan_id = 0xFFFF;
1636
1637         netdev = ip_dev_find(&init_net, htonl(addr[0]));
1638         if (netdev) {
1639                 vlan_id = rdma_vlan_dev_vlan_id(netdev);
1640                 dev_put(netdev);
1641         }
1642
1643         return vlan_id;
1644 }
1645
1646 /**
1647  * irdma_add_mqh_6 - Adds multiple qhashes for IPv6
1648  * @iwdev: iWarp device
1649  * @cm_info: CM info for parent listen node
1650  * @cm_parent_listen_node: The parent listen node
1651  *
1652  * Adds a qhash and a child listen node for every IPv6 address
1653  * on the adapter and adds the associated qhash filter
1654  */
1655 static int irdma_add_mqh_6(struct irdma_device *iwdev,
1656                            struct irdma_cm_info *cm_info,
1657                            struct irdma_cm_listener *cm_parent_listen_node)
1658 {
1659         struct net_device *ip_dev;
1660         struct inet6_dev *idev;
1661         struct inet6_ifaddr *ifp, *tmp;
1662         struct irdma_cm_listener *child_listen_node;
1663         unsigned long flags;
1664         int ret = 0;
1665
1666         rtnl_lock();
1667         for_each_netdev(&init_net, ip_dev) {
1668                 if (!(ip_dev->flags & IFF_UP))
1669                         continue;
1670
1671                 if (((rdma_vlan_dev_vlan_id(ip_dev) >= VLAN_N_VID) ||
1672                      (rdma_vlan_dev_real_dev(ip_dev) != iwdev->netdev)) &&
1673                     ip_dev != iwdev->netdev)
1674                         continue;
1675
1676                 idev = __in6_dev_get(ip_dev);
1677                 if (!idev) {
1678                         ibdev_dbg(&iwdev->ibdev, "CM: idev == NULL\n");
1679                         break;
1680                 }
1681                 list_for_each_entry_safe (ifp, tmp, &idev->addr_list, if_list) {
1682                         ibdev_dbg(&iwdev->ibdev, "CM: IP=%pI6, vlan_id=%d, MAC=%pM\n",
1683                                   &ifp->addr, rdma_vlan_dev_vlan_id(ip_dev),
1684                                   ip_dev->dev_addr);
1685                         child_listen_node = kzalloc(sizeof(*child_listen_node), GFP_KERNEL);
1686                         ibdev_dbg(&iwdev->ibdev, "CM: Allocating child listener %p\n",
1687                                   child_listen_node);
1688                         if (!child_listen_node) {
1689                                 ibdev_dbg(&iwdev->ibdev, "CM: listener memory allocation\n");
1690                                 ret = -ENOMEM;
1691                                 goto exit;
1692                         }
1693
1694                         cm_info->vlan_id = rdma_vlan_dev_vlan_id(ip_dev);
1695                         cm_parent_listen_node->vlan_id = cm_info->vlan_id;
1696                         memcpy(child_listen_node, cm_parent_listen_node,
1697                                sizeof(*child_listen_node));
1698                         irdma_copy_ip_ntohl(child_listen_node->loc_addr,
1699                                             ifp->addr.in6_u.u6_addr32);
1700                         memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
1701                                sizeof(cm_info->loc_addr));
1702                         if (!iwdev->vsi.dscp_mode)
1703                                 cm_info->user_pri =
1704                                 irdma_iw_get_vlan_prio(child_listen_node->loc_addr,
1705                                                        cm_info->user_pri,
1706                                                        false);
1707
1708                         ret = irdma_manage_qhash(iwdev, cm_info,
1709                                                  IRDMA_QHASH_TYPE_TCP_SYN,
1710                                                  IRDMA_QHASH_MANAGE_TYPE_ADD,
1711                                                  NULL, true);
1712                         if (ret) {
1713                                 kfree(child_listen_node);
1714                                 continue;
1715                         }
1716
1717                         trace_irdma_add_mqh_6(iwdev, child_listen_node,
1718                                               ip_dev->dev_addr);
1719
1720                         child_listen_node->qhash_set = true;
1721                         spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, flags);
1722                         list_add(&child_listen_node->child_listen_list,
1723                                  &cm_parent_listen_node->child_listen_list);
1724                         spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
1725                         cm_parent_listen_node->cm_core->stats_listen_nodes_created++;
1726                 }
1727         }
1728 exit:
1729         rtnl_unlock();
1730
1731         return ret;
1732 }
1733
1734 /**
1735  * irdma_add_mqh_4 - Adds multiple qhashes for IPv4
1736  * @iwdev: iWarp device
1737  * @cm_info: CM info for parent listen node
1738  * @cm_parent_listen_node: The parent listen node
1739  *
1740  * Adds a qhash and a child listen node for every IPv4 address
1741  * on the adapter and adds the associated qhash filter
1742  */
1743 static int irdma_add_mqh_4(struct irdma_device *iwdev,
1744                            struct irdma_cm_info *cm_info,
1745                            struct irdma_cm_listener *cm_parent_listen_node)
1746 {
1747         struct net_device *ip_dev;
1748         struct in_device *idev;
1749         struct irdma_cm_listener *child_listen_node;
1750         unsigned long flags;
1751         const struct in_ifaddr *ifa;
1752         int ret = 0;
1753
1754         rtnl_lock();
1755         for_each_netdev(&init_net, ip_dev) {
1756                 if (!(ip_dev->flags & IFF_UP))
1757                         continue;
1758
1759                 if (((rdma_vlan_dev_vlan_id(ip_dev) >= VLAN_N_VID) ||
1760                      (rdma_vlan_dev_real_dev(ip_dev) != iwdev->netdev)) &&
1761                     ip_dev != iwdev->netdev)
1762                         continue;
1763
1764                 idev = in_dev_get(ip_dev);
1765                 if (!idev)
1766                         continue;
1767
1768                 in_dev_for_each_ifa_rtnl(ifa, idev) {
1769                         ibdev_dbg(&iwdev->ibdev,
1770                                   "CM: Allocating child CM Listener forIP=%pI4, vlan_id=%d, MAC=%pM\n",
1771                                   &ifa->ifa_address, rdma_vlan_dev_vlan_id(ip_dev),
1772                                   ip_dev->dev_addr);
1773                         child_listen_node = kzalloc(sizeof(*child_listen_node), GFP_KERNEL);
1774                         cm_parent_listen_node->cm_core->stats_listen_nodes_created++;
1775                         ibdev_dbg(&iwdev->ibdev, "CM: Allocating child listener %p\n",
1776                                   child_listen_node);
1777                         if (!child_listen_node) {
1778                                 ibdev_dbg(&iwdev->ibdev, "CM: listener memory allocation\n");
1779                                 in_dev_put(idev);
1780                                 ret = -ENOMEM;
1781                                 goto exit;
1782                         }
1783
1784                         cm_info->vlan_id = rdma_vlan_dev_vlan_id(ip_dev);
1785                         cm_parent_listen_node->vlan_id = cm_info->vlan_id;
1786                         memcpy(child_listen_node, cm_parent_listen_node,
1787                                sizeof(*child_listen_node));
1788                         child_listen_node->loc_addr[0] =
1789                                 ntohl(ifa->ifa_address);
1790                         memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
1791                                sizeof(cm_info->loc_addr));
1792                         if (!iwdev->vsi.dscp_mode)
1793                                 cm_info->user_pri =
1794                                 irdma_iw_get_vlan_prio(child_listen_node->loc_addr,
1795                                                        cm_info->user_pri,
1796                                                        true);
1797                         ret = irdma_manage_qhash(iwdev, cm_info,
1798                                                  IRDMA_QHASH_TYPE_TCP_SYN,
1799                                                  IRDMA_QHASH_MANAGE_TYPE_ADD,
1800                                                  NULL, true);
1801                         if (ret) {
1802                                 kfree(child_listen_node);
1803                                 cm_parent_listen_node->cm_core
1804                                         ->stats_listen_nodes_created--;
1805                                 continue;
1806                         }
1807
1808                         trace_irdma_add_mqh_4(iwdev, child_listen_node,
1809                                               ip_dev->dev_addr);
1810
1811                         child_listen_node->qhash_set = true;
1812                         spin_lock_irqsave(&iwdev->cm_core.listen_list_lock,
1813                                           flags);
1814                         list_add(&child_listen_node->child_listen_list,
1815                                  &cm_parent_listen_node->child_listen_list);
1816                         spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
1817                 }
1818                 in_dev_put(idev);
1819         }
1820 exit:
1821         rtnl_unlock();
1822
1823         return ret;
1824 }
1825
1826 /**
1827  * irdma_add_mqh - Adds multiple qhashes
1828  * @iwdev: iWarp device
1829  * @cm_info: CM info for parent listen node
1830  * @cm_listen_node: The parent listen node
1831  */
1832 static int irdma_add_mqh(struct irdma_device *iwdev,
1833                          struct irdma_cm_info *cm_info,
1834                          struct irdma_cm_listener *cm_listen_node)
1835 {
1836         if (cm_info->ipv4)
1837                 return irdma_add_mqh_4(iwdev, cm_info, cm_listen_node);
1838         else
1839                 return irdma_add_mqh_6(iwdev, cm_info, cm_listen_node);
1840 }
1841
1842 /**
1843  * irdma_reset_list_prep - add connection nodes slated for reset to list
1844  * @cm_core: cm's core
1845  * @listener: pointer to listener node
1846  * @reset_list: a list to which cm_node will be selected
1847  */
1848 static void irdma_reset_list_prep(struct irdma_cm_core *cm_core,
1849                                   struct irdma_cm_listener *listener,
1850                                   struct list_head *reset_list)
1851 {
1852         struct irdma_cm_node *cm_node;
1853         int bkt;
1854
1855         hash_for_each_rcu(cm_core->cm_hash_tbl, bkt, cm_node, list) {
1856                 if (cm_node->listener == listener &&
1857                     !cm_node->accelerated &&
1858                     refcount_inc_not_zero(&cm_node->refcnt))
1859                         list_add(&cm_node->reset_entry, reset_list);
1860         }
1861 }
1862
1863 /**
1864  * irdma_dec_refcnt_listen - delete listener and associated cm nodes
1865  * @cm_core: cm's core
1866  * @listener: pointer to listener node
1867  * @free_hanging_nodes: to free associated cm_nodes
1868  * @apbvt_del: flag to delete the apbvt
1869  */
1870 static int irdma_dec_refcnt_listen(struct irdma_cm_core *cm_core,
1871                                    struct irdma_cm_listener *listener,
1872                                    int free_hanging_nodes, bool apbvt_del)
1873 {
1874         int err;
1875         struct list_head *list_pos;
1876         struct list_head *list_temp;
1877         struct irdma_cm_node *cm_node;
1878         struct list_head reset_list;
1879         struct irdma_cm_info nfo;
1880         enum irdma_cm_node_state old_state;
1881         unsigned long flags;
1882
1883         trace_irdma_dec_refcnt_listen(listener, __builtin_return_address(0));
1884         /* free non-accelerated child nodes for this listener */
1885         INIT_LIST_HEAD(&reset_list);
1886         if (free_hanging_nodes) {
1887                 rcu_read_lock();
1888                 irdma_reset_list_prep(cm_core, listener, &reset_list);
1889                 rcu_read_unlock();
1890         }
1891
1892         list_for_each_safe (list_pos, list_temp, &reset_list) {
1893                 cm_node = container_of(list_pos, struct irdma_cm_node,
1894                                        reset_entry);
1895                 if (cm_node->state >= IRDMA_CM_STATE_FIN_WAIT1) {
1896                         irdma_rem_ref_cm_node(cm_node);
1897                         continue;
1898                 }
1899
1900                 irdma_cleanup_retrans_entry(cm_node);
1901                 err = irdma_send_reset(cm_node);
1902                 if (err) {
1903                         cm_node->state = IRDMA_CM_STATE_CLOSED;
1904                         ibdev_dbg(&cm_node->iwdev->ibdev,
1905                                   "CM: send reset failed\n");
1906                 } else {
1907                         old_state = cm_node->state;
1908                         cm_node->state = IRDMA_CM_STATE_LISTENER_DESTROYED;
1909                         if (old_state != IRDMA_CM_STATE_MPAREQ_RCVD)
1910                                 irdma_rem_ref_cm_node(cm_node);
1911                 }
1912         }
1913
1914         if (refcount_dec_and_test(&listener->refcnt)) {
1915                 spin_lock_irqsave(&cm_core->listen_list_lock, flags);
1916                 list_del(&listener->list);
1917                 spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
1918
1919                 if (apbvt_del)
1920                         irdma_del_apbvt(listener->iwdev,
1921                                         listener->apbvt_entry);
1922                 memcpy(nfo.loc_addr, listener->loc_addr, sizeof(nfo.loc_addr));
1923                 nfo.loc_port = listener->loc_port;
1924                 nfo.ipv4 = listener->ipv4;
1925                 nfo.vlan_id = listener->vlan_id;
1926                 nfo.user_pri = listener->user_pri;
1927                 nfo.qh_qpid = listener->iwdev->vsi.ilq->qp_id;
1928
1929                 if (!list_empty(&listener->child_listen_list)) {
1930                         irdma_del_multiple_qhash(listener->iwdev, &nfo,
1931                                                  listener);
1932                 } else {
1933                         if (listener->qhash_set)
1934                                 irdma_manage_qhash(listener->iwdev,
1935                                                    &nfo,
1936                                                    IRDMA_QHASH_TYPE_TCP_SYN,
1937                                                    IRDMA_QHASH_MANAGE_TYPE_DELETE,
1938                                                    NULL, false);
1939                 }
1940
1941                 cm_core->stats_listen_destroyed++;
1942                 cm_core->stats_listen_nodes_destroyed++;
1943                 ibdev_dbg(&listener->iwdev->ibdev,
1944                           "CM: loc_port=0x%04x loc_addr=%pI4 cm_listen_node=%p cm_id=%p qhash_set=%d vlan_id=%d apbvt_del=%d\n",
1945                           listener->loc_port, listener->loc_addr, listener,
1946                           listener->cm_id, listener->qhash_set,
1947                           listener->vlan_id, apbvt_del);
1948                 kfree(listener);
1949                 listener = NULL;
1950                 return 0;
1951         }
1952
1953         return -EINVAL;
1954 }
1955
1956 /**
1957  * irdma_cm_del_listen - delete a listener
1958  * @cm_core: cm's core
1959  * @listener: passive connection's listener
1960  * @apbvt_del: flag to delete apbvt
1961  */
1962 static int irdma_cm_del_listen(struct irdma_cm_core *cm_core,
1963                                struct irdma_cm_listener *listener,
1964                                bool apbvt_del)
1965 {
1966         listener->listener_state = IRDMA_CM_LISTENER_PASSIVE_STATE;
1967         listener->cm_id = NULL;
1968
1969         return irdma_dec_refcnt_listen(cm_core, listener, 1, apbvt_del);
1970 }
1971
1972 /**
1973  * irdma_addr_resolve_neigh - resolve neighbor address
1974  * @iwdev: iwarp device structure
1975  * @src_ip: local ip address
1976  * @dst_ip: remote ip address
1977  * @arpindex: if there is an arp entry
1978  */
1979 static int irdma_addr_resolve_neigh(struct irdma_device *iwdev, u32 src_ip,
1980                                     u32 dst_ip, int arpindex)
1981 {
1982         struct rtable *rt;
1983         struct neighbour *neigh;
1984         int rc = arpindex;
1985         __be32 dst_ipaddr = htonl(dst_ip);
1986         __be32 src_ipaddr = htonl(src_ip);
1987
1988         rt = ip_route_output(&init_net, dst_ipaddr, src_ipaddr, 0, 0);
1989         if (IS_ERR(rt)) {
1990                 ibdev_dbg(&iwdev->ibdev, "CM: ip_route_output fail\n");
1991                 return -EINVAL;
1992         }
1993
1994         neigh = dst_neigh_lookup(&rt->dst, &dst_ipaddr);
1995         if (!neigh)
1996                 goto exit;
1997
1998         if (neigh->nud_state & NUD_VALID)
1999                 rc = irdma_add_arp(iwdev->rf, &dst_ip, true, neigh->ha);
2000         else
2001                 neigh_event_send(neigh, NULL);
2002         if (neigh)
2003                 neigh_release(neigh);
2004 exit:
2005         ip_rt_put(rt);
2006
2007         return rc;
2008 }
2009
2010 /**
2011  * irdma_get_dst_ipv6 - get destination cache entry via ipv6 lookup
2012  * @src_addr: local ipv6 sock address
2013  * @dst_addr: destination ipv6 sock address
2014  */
2015 static struct dst_entry *irdma_get_dst_ipv6(struct sockaddr_in6 *src_addr,
2016                                             struct sockaddr_in6 *dst_addr)
2017 {
2018         struct dst_entry *dst = NULL;
2019
2020         if ((IS_ENABLED(CONFIG_IPV6))) {
2021                 struct flowi6 fl6 = {};
2022
2023                 fl6.daddr = dst_addr->sin6_addr;
2024                 fl6.saddr = src_addr->sin6_addr;
2025                 if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
2026                         fl6.flowi6_oif = dst_addr->sin6_scope_id;
2027
2028                 dst = ip6_route_output(&init_net, NULL, &fl6);
2029         }
2030
2031         return dst;
2032 }
2033
2034 /**
2035  * irdma_addr_resolve_neigh_ipv6 - resolve neighbor ipv6 address
2036  * @iwdev: iwarp device structure
2037  * @src: local ip address
2038  * @dest: remote ip address
2039  * @arpindex: if there is an arp entry
2040  */
2041 static int irdma_addr_resolve_neigh_ipv6(struct irdma_device *iwdev, u32 *src,
2042                                          u32 *dest, int arpindex)
2043 {
2044         struct neighbour *neigh;
2045         int rc = arpindex;
2046         struct dst_entry *dst;
2047         struct sockaddr_in6 dst_addr = {};
2048         struct sockaddr_in6 src_addr = {};
2049
2050         dst_addr.sin6_family = AF_INET6;
2051         irdma_copy_ip_htonl(dst_addr.sin6_addr.in6_u.u6_addr32, dest);
2052         src_addr.sin6_family = AF_INET6;
2053         irdma_copy_ip_htonl(src_addr.sin6_addr.in6_u.u6_addr32, src);
2054         dst = irdma_get_dst_ipv6(&src_addr, &dst_addr);
2055         if (!dst || dst->error) {
2056                 if (dst) {
2057                         dst_release(dst);
2058                         ibdev_dbg(&iwdev->ibdev,
2059                                   "CM: ip6_route_output returned dst->error = %d\n",
2060                                   dst->error);
2061                 }
2062                 return -EINVAL;
2063         }
2064
2065         neigh = dst_neigh_lookup(dst, dst_addr.sin6_addr.in6_u.u6_addr32);
2066         if (!neigh)
2067                 goto exit;
2068
2069         ibdev_dbg(&iwdev->ibdev, "CM: dst_neigh_lookup MAC=%pM\n",
2070                   neigh->ha);
2071
2072         trace_irdma_addr_resolve(iwdev, neigh->ha);
2073
2074         if (neigh->nud_state & NUD_VALID)
2075                 rc = irdma_add_arp(iwdev->rf, dest, false, neigh->ha);
2076         else
2077                 neigh_event_send(neigh, NULL);
2078         if (neigh)
2079                 neigh_release(neigh);
2080 exit:
2081         dst_release(dst);
2082
2083         return rc;
2084 }
2085
2086 /**
2087  * irdma_find_node - find a cm node that matches the reference cm node
2088  * @cm_core: cm's core
2089  * @rem_port: remote tcp port num
2090  * @rem_addr: remote ip addr
2091  * @loc_port: local tcp port num
2092  * @loc_addr: local ip addr
2093  * @vlan_id: local VLAN ID
2094  */
2095 struct irdma_cm_node *irdma_find_node(struct irdma_cm_core *cm_core,
2096                                       u16 rem_port, u32 *rem_addr, u16 loc_port,
2097                                       u32 *loc_addr, u16 vlan_id)
2098 {
2099         struct irdma_cm_node *cm_node;
2100         u32 key = (rem_port << 16) | loc_port;
2101
2102         rcu_read_lock();
2103         hash_for_each_possible_rcu(cm_core->cm_hash_tbl, cm_node, list, key) {
2104                 if (cm_node->vlan_id == vlan_id &&
2105                     cm_node->loc_port == loc_port && cm_node->rem_port == rem_port &&
2106                     !memcmp(cm_node->loc_addr, loc_addr, sizeof(cm_node->loc_addr)) &&
2107                     !memcmp(cm_node->rem_addr, rem_addr, sizeof(cm_node->rem_addr))) {
2108                         if (!refcount_inc_not_zero(&cm_node->refcnt))
2109                                 goto exit;
2110                         rcu_read_unlock();
2111                         trace_irdma_find_node(cm_node, 0, NULL);
2112                         return cm_node;
2113                 }
2114         }
2115
2116 exit:
2117         rcu_read_unlock();
2118
2119         /* no owner node */
2120         return NULL;
2121 }
2122
2123 /**
2124  * irdma_add_hte_node - add a cm node to the hash table
2125  * @cm_core: cm's core
2126  * @cm_node: connection's node
2127  */
2128 static void irdma_add_hte_node(struct irdma_cm_core *cm_core,
2129                                struct irdma_cm_node *cm_node)
2130 {
2131         unsigned long flags;
2132         u32 key = (cm_node->rem_port << 16) | cm_node->loc_port;
2133
2134         spin_lock_irqsave(&cm_core->ht_lock, flags);
2135         hash_add_rcu(cm_core->cm_hash_tbl, &cm_node->list, key);
2136         spin_unlock_irqrestore(&cm_core->ht_lock, flags);
2137 }
2138
2139 /**
2140  * irdma_ipv4_is_lpb - check if loopback
2141  * @loc_addr: local addr to compare
2142  * @rem_addr: remote address
2143  */
2144 bool irdma_ipv4_is_lpb(u32 loc_addr, u32 rem_addr)
2145 {
2146         return ipv4_is_loopback(htonl(rem_addr)) || (loc_addr == rem_addr);
2147 }
2148
2149 /**
2150  * irdma_ipv6_is_lpb - check if loopback
2151  * @loc_addr: local addr to compare
2152  * @rem_addr: remote address
2153  */
2154 bool irdma_ipv6_is_lpb(u32 *loc_addr, u32 *rem_addr)
2155 {
2156         struct in6_addr raddr6;
2157
2158         irdma_copy_ip_htonl(raddr6.in6_u.u6_addr32, rem_addr);
2159
2160         return !memcmp(loc_addr, rem_addr, 16) || ipv6_addr_loopback(&raddr6);
2161 }
2162
2163 /**
2164  * irdma_cm_create_ah - create a cm address handle
2165  * @cm_node: The connection manager node to create AH for
2166  * @wait: Provides option to wait for ah creation or not
2167  */
2168 static int irdma_cm_create_ah(struct irdma_cm_node *cm_node, bool wait)
2169 {
2170         struct irdma_ah_info ah_info = {};
2171         struct irdma_device *iwdev = cm_node->iwdev;
2172
2173         ether_addr_copy(ah_info.mac_addr, iwdev->netdev->dev_addr);
2174
2175         ah_info.hop_ttl = 0x40;
2176         ah_info.tc_tos = cm_node->tos;
2177         ah_info.vsi = &iwdev->vsi;
2178
2179         if (cm_node->ipv4) {
2180                 ah_info.ipv4_valid = true;
2181                 ah_info.dest_ip_addr[0] = cm_node->rem_addr[0];
2182                 ah_info.src_ip_addr[0] = cm_node->loc_addr[0];
2183                 ah_info.do_lpbk = irdma_ipv4_is_lpb(ah_info.src_ip_addr[0],
2184                                                     ah_info.dest_ip_addr[0]);
2185         } else {
2186                 memcpy(ah_info.dest_ip_addr, cm_node->rem_addr,
2187                        sizeof(ah_info.dest_ip_addr));
2188                 memcpy(ah_info.src_ip_addr, cm_node->loc_addr,
2189                        sizeof(ah_info.src_ip_addr));
2190                 ah_info.do_lpbk = irdma_ipv6_is_lpb(ah_info.src_ip_addr,
2191                                                     ah_info.dest_ip_addr);
2192         }
2193
2194         ah_info.vlan_tag = cm_node->vlan_id;
2195         if (cm_node->vlan_id < VLAN_N_VID) {
2196                 ah_info.insert_vlan_tag = 1;
2197                 ah_info.vlan_tag |= cm_node->user_pri << VLAN_PRIO_SHIFT;
2198         }
2199
2200         ah_info.dst_arpindex =
2201                 irdma_arp_table(iwdev->rf, ah_info.dest_ip_addr,
2202                                 ah_info.ipv4_valid, NULL, IRDMA_ARP_RESOLVE);
2203
2204         if (irdma_puda_create_ah(&iwdev->rf->sc_dev, &ah_info, wait,
2205                                  IRDMA_PUDA_RSRC_TYPE_ILQ, cm_node,
2206                                  &cm_node->ah))
2207                 return -ENOMEM;
2208
2209         trace_irdma_create_ah(cm_node);
2210         return 0;
2211 }
2212
2213 /**
2214  * irdma_cm_free_ah - free a cm address handle
2215  * @cm_node: The connection manager node to create AH for
2216  */
2217 static void irdma_cm_free_ah(struct irdma_cm_node *cm_node)
2218 {
2219         struct irdma_device *iwdev = cm_node->iwdev;
2220
2221         trace_irdma_cm_free_ah(cm_node);
2222         irdma_puda_free_ah(&iwdev->rf->sc_dev, cm_node->ah);
2223         cm_node->ah = NULL;
2224 }
2225
2226 /**
2227  * irdma_make_cm_node - create a new instance of a cm node
2228  * @cm_core: cm's core
2229  * @iwdev: iwarp device structure
2230  * @cm_info: quad info for connection
2231  * @listener: passive connection's listener
2232  */
2233 static struct irdma_cm_node *
2234 irdma_make_cm_node(struct irdma_cm_core *cm_core, struct irdma_device *iwdev,
2235                    struct irdma_cm_info *cm_info,
2236                    struct irdma_cm_listener *listener)
2237 {
2238         struct irdma_cm_node *cm_node;
2239         int oldarpindex;
2240         int arpindex;
2241         struct net_device *netdev = iwdev->netdev;
2242
2243         /* create an hte and cm_node for this instance */
2244         cm_node = kzalloc(sizeof(*cm_node), GFP_ATOMIC);
2245         if (!cm_node)
2246                 return NULL;
2247
2248         /* set our node specific transport info */
2249         cm_node->ipv4 = cm_info->ipv4;
2250         cm_node->vlan_id = cm_info->vlan_id;
2251         if (cm_node->vlan_id >= VLAN_N_VID && iwdev->dcb_vlan_mode)
2252                 cm_node->vlan_id = 0;
2253         cm_node->tos = cm_info->tos;
2254         cm_node->user_pri = cm_info->user_pri;
2255         if (listener) {
2256                 if (listener->tos != cm_info->tos)
2257                         ibdev_warn(&iwdev->ibdev,
2258                                    "application TOS[%d] and remote client TOS[%d] mismatch\n",
2259                                    listener->tos, cm_info->tos);
2260                 if (iwdev->vsi.dscp_mode) {
2261                         cm_node->user_pri = listener->user_pri;
2262                 } else {
2263                         cm_node->tos = max(listener->tos, cm_info->tos);
2264                         cm_node->user_pri = rt_tos2priority(cm_node->tos);
2265                         cm_node->user_pri =
2266                                 irdma_iw_get_vlan_prio(cm_info->loc_addr,
2267                                                        cm_node->user_pri,
2268                                                        cm_info->ipv4);
2269                 }
2270                 ibdev_dbg(&iwdev->ibdev,
2271                           "DCB: listener: TOS:[%d] UP:[%d]\n", cm_node->tos,
2272                           cm_node->user_pri);
2273                 trace_irdma_listener_tos(iwdev, cm_node->tos,
2274                                          cm_node->user_pri);
2275         }
2276         memcpy(cm_node->loc_addr, cm_info->loc_addr, sizeof(cm_node->loc_addr));
2277         memcpy(cm_node->rem_addr, cm_info->rem_addr, sizeof(cm_node->rem_addr));
2278         cm_node->loc_port = cm_info->loc_port;
2279         cm_node->rem_port = cm_info->rem_port;
2280
2281         cm_node->mpa_frame_rev = IRDMA_CM_DEFAULT_MPA_VER;
2282         cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO;
2283         cm_node->iwdev = iwdev;
2284         cm_node->dev = &iwdev->rf->sc_dev;
2285
2286         cm_node->ird_size = cm_node->dev->hw_attrs.max_hw_ird;
2287         cm_node->ord_size = cm_node->dev->hw_attrs.max_hw_ord;
2288
2289         cm_node->listener = listener;
2290         cm_node->cm_id = cm_info->cm_id;
2291         ether_addr_copy(cm_node->loc_mac, netdev->dev_addr);
2292         spin_lock_init(&cm_node->retrans_list_lock);
2293         cm_node->ack_rcvd = false;
2294
2295         init_completion(&cm_node->establish_comp);
2296         refcount_set(&cm_node->refcnt, 1);
2297         /* associate our parent CM core */
2298         cm_node->cm_core = cm_core;
2299         cm_node->tcp_cntxt.loc_id = IRDMA_CM_DEFAULT_LOCAL_ID;
2300         cm_node->tcp_cntxt.rcv_wscale = iwdev->rcv_wscale;
2301         cm_node->tcp_cntxt.rcv_wnd = iwdev->rcv_wnd >> cm_node->tcp_cntxt.rcv_wscale;
2302         if (cm_node->ipv4) {
2303                 cm_node->tcp_cntxt.loc_seq_num = secure_tcp_seq(htonl(cm_node->loc_addr[0]),
2304                                                                 htonl(cm_node->rem_addr[0]),
2305                                                                 htons(cm_node->loc_port),
2306                                                                 htons(cm_node->rem_port));
2307                 cm_node->tcp_cntxt.mss = iwdev->vsi.mtu - IRDMA_MTU_TO_MSS_IPV4;
2308         } else if (IS_ENABLED(CONFIG_IPV6)) {
2309                 __be32 loc[4] = {
2310                         htonl(cm_node->loc_addr[0]), htonl(cm_node->loc_addr[1]),
2311                         htonl(cm_node->loc_addr[2]), htonl(cm_node->loc_addr[3])
2312                 };
2313                 __be32 rem[4] = {
2314                         htonl(cm_node->rem_addr[0]), htonl(cm_node->rem_addr[1]),
2315                         htonl(cm_node->rem_addr[2]), htonl(cm_node->rem_addr[3])
2316                 };
2317                 cm_node->tcp_cntxt.loc_seq_num = secure_tcpv6_seq(loc, rem,
2318                                                                   htons(cm_node->loc_port),
2319                                                                   htons(cm_node->rem_port));
2320                 cm_node->tcp_cntxt.mss = iwdev->vsi.mtu - IRDMA_MTU_TO_MSS_IPV6;
2321         }
2322
2323         if ((cm_node->ipv4 &&
2324              irdma_ipv4_is_lpb(cm_node->loc_addr[0], cm_node->rem_addr[0])) ||
2325             (!cm_node->ipv4 &&
2326              irdma_ipv6_is_lpb(cm_node->loc_addr, cm_node->rem_addr))) {
2327                 cm_node->do_lpb = true;
2328                 arpindex = irdma_arp_table(iwdev->rf, cm_node->rem_addr,
2329                                            cm_node->ipv4, NULL,
2330                                            IRDMA_ARP_RESOLVE);
2331         } else {
2332                 oldarpindex = irdma_arp_table(iwdev->rf, cm_node->rem_addr,
2333                                               cm_node->ipv4, NULL,
2334                                               IRDMA_ARP_RESOLVE);
2335                 if (cm_node->ipv4)
2336                         arpindex = irdma_addr_resolve_neigh(iwdev,
2337                                                             cm_info->loc_addr[0],
2338                                                             cm_info->rem_addr[0],
2339                                                             oldarpindex);
2340                 else if (IS_ENABLED(CONFIG_IPV6))
2341                         arpindex = irdma_addr_resolve_neigh_ipv6(iwdev,
2342                                                                  cm_info->loc_addr,
2343                                                                  cm_info->rem_addr,
2344                                                                  oldarpindex);
2345                 else
2346                         arpindex = -EINVAL;
2347         }
2348
2349         if (arpindex < 0)
2350                 goto err;
2351
2352         ether_addr_copy(cm_node->rem_mac,
2353                         iwdev->rf->arp_table[arpindex].mac_addr);
2354         irdma_add_hte_node(cm_core, cm_node);
2355         cm_core->stats_nodes_created++;
2356         return cm_node;
2357
2358 err:
2359         kfree(cm_node);
2360
2361         return NULL;
2362 }
2363
2364 static void irdma_destroy_connection(struct irdma_cm_node *cm_node)
2365 {
2366         struct irdma_cm_core *cm_core = cm_node->cm_core;
2367         struct irdma_qp *iwqp;
2368         struct irdma_cm_info nfo;
2369
2370         /* if the node is destroyed before connection was accelerated */
2371         if (!cm_node->accelerated && cm_node->accept_pend) {
2372                 ibdev_dbg(&cm_node->iwdev->ibdev,
2373                           "CM: node destroyed before established\n");
2374                 atomic_dec(&cm_node->listener->pend_accepts_cnt);
2375         }
2376         if (cm_node->close_entry)
2377                 irdma_handle_close_entry(cm_node, 0);
2378         if (cm_node->listener) {
2379                 irdma_dec_refcnt_listen(cm_core, cm_node->listener, 0, true);
2380         } else {
2381                 if (cm_node->apbvt_set) {
2382                         irdma_del_apbvt(cm_node->iwdev, cm_node->apbvt_entry);
2383                         cm_node->apbvt_set = 0;
2384                 }
2385                 irdma_get_addr_info(cm_node, &nfo);
2386                 if (cm_node->qhash_set) {
2387                         nfo.qh_qpid = cm_node->iwdev->vsi.ilq->qp_id;
2388                         irdma_manage_qhash(cm_node->iwdev, &nfo,
2389                                            IRDMA_QHASH_TYPE_TCP_ESTABLISHED,
2390                                            IRDMA_QHASH_MANAGE_TYPE_DELETE, NULL,
2391                                            false);
2392                         cm_node->qhash_set = 0;
2393                 }
2394         }
2395
2396         iwqp = cm_node->iwqp;
2397         if (iwqp) {
2398                 cm_node->cm_id->rem_ref(cm_node->cm_id);
2399                 cm_node->cm_id = NULL;
2400                 iwqp->cm_id = NULL;
2401                 irdma_qp_rem_ref(&iwqp->ibqp);
2402                 cm_node->iwqp = NULL;
2403         } else if (cm_node->qhash_set) {
2404                 irdma_get_addr_info(cm_node, &nfo);
2405                 nfo.qh_qpid = cm_node->iwdev->vsi.ilq->qp_id;
2406                 irdma_manage_qhash(cm_node->iwdev, &nfo,
2407                                    IRDMA_QHASH_TYPE_TCP_ESTABLISHED,
2408                                    IRDMA_QHASH_MANAGE_TYPE_DELETE, NULL, false);
2409                 cm_node->qhash_set = 0;
2410         }
2411
2412         cm_core->cm_free_ah(cm_node);
2413 }
2414
2415 /**
2416  * irdma_rem_ref_cm_node - destroy an instance of a cm node
2417  * @cm_node: connection's node
2418  */
2419 void irdma_rem_ref_cm_node(struct irdma_cm_node *cm_node)
2420 {
2421         struct irdma_cm_core *cm_core = cm_node->cm_core;
2422         unsigned long flags;
2423
2424         trace_irdma_rem_ref_cm_node(cm_node, 0, __builtin_return_address(0));
2425         spin_lock_irqsave(&cm_core->ht_lock, flags);
2426
2427         if (!refcount_dec_and_test(&cm_node->refcnt)) {
2428                 spin_unlock_irqrestore(&cm_core->ht_lock, flags);
2429                 return;
2430         }
2431         if (cm_node->iwqp) {
2432                 cm_node->iwqp->cm_node = NULL;
2433                 cm_node->iwqp->cm_id = NULL;
2434         }
2435         hash_del_rcu(&cm_node->list);
2436         cm_node->cm_core->stats_nodes_destroyed++;
2437
2438         spin_unlock_irqrestore(&cm_core->ht_lock, flags);
2439
2440         irdma_destroy_connection(cm_node);
2441
2442         kfree_rcu(cm_node, rcu_head);
2443 }
2444
2445 /**
2446  * irdma_handle_fin_pkt - FIN packet received
2447  * @cm_node: connection's node
2448  */
2449 static void irdma_handle_fin_pkt(struct irdma_cm_node *cm_node)
2450 {
2451         switch (cm_node->state) {
2452         case IRDMA_CM_STATE_SYN_RCVD:
2453         case IRDMA_CM_STATE_SYN_SENT:
2454         case IRDMA_CM_STATE_ESTABLISHED:
2455         case IRDMA_CM_STATE_MPAREJ_RCVD:
2456                 cm_node->tcp_cntxt.rcv_nxt++;
2457                 irdma_cleanup_retrans_entry(cm_node);
2458                 cm_node->state = IRDMA_CM_STATE_LAST_ACK;
2459                 irdma_send_fin(cm_node);
2460                 break;
2461         case IRDMA_CM_STATE_MPAREQ_SENT:
2462                 irdma_create_event(cm_node, IRDMA_CM_EVENT_ABORTED);
2463                 cm_node->tcp_cntxt.rcv_nxt++;
2464                 irdma_cleanup_retrans_entry(cm_node);
2465                 cm_node->state = IRDMA_CM_STATE_CLOSED;
2466                 refcount_inc(&cm_node->refcnt);
2467                 irdma_send_reset(cm_node);
2468                 break;
2469         case IRDMA_CM_STATE_FIN_WAIT1:
2470                 cm_node->tcp_cntxt.rcv_nxt++;
2471                 irdma_cleanup_retrans_entry(cm_node);
2472                 cm_node->state = IRDMA_CM_STATE_CLOSING;
2473                 irdma_send_ack(cm_node);
2474                 /*
2475                  * Wait for ACK as this is simultaneous close.
2476                  * After we receive ACK, do not send anything.
2477                  * Just rm the node.
2478                  */
2479                 break;
2480         case IRDMA_CM_STATE_FIN_WAIT2:
2481                 cm_node->tcp_cntxt.rcv_nxt++;
2482                 irdma_cleanup_retrans_entry(cm_node);
2483                 cm_node->state = IRDMA_CM_STATE_TIME_WAIT;
2484                 irdma_send_ack(cm_node);
2485                 irdma_schedule_cm_timer(cm_node, NULL, IRDMA_TIMER_TYPE_CLOSE,
2486                                         1, 0);
2487                 break;
2488         case IRDMA_CM_STATE_TIME_WAIT:
2489                 cm_node->tcp_cntxt.rcv_nxt++;
2490                 irdma_cleanup_retrans_entry(cm_node);
2491                 cm_node->state = IRDMA_CM_STATE_CLOSED;
2492                 irdma_rem_ref_cm_node(cm_node);
2493                 break;
2494         case IRDMA_CM_STATE_OFFLOADED:
2495         default:
2496                 ibdev_dbg(&cm_node->iwdev->ibdev,
2497                           "CM: bad state node state = %d\n", cm_node->state);
2498                 break;
2499         }
2500 }
2501
2502 /**
2503  * irdma_handle_rst_pkt - process received RST packet
2504  * @cm_node: connection's node
2505  * @rbuf: receive buffer
2506  */
2507 static void irdma_handle_rst_pkt(struct irdma_cm_node *cm_node,
2508                                  struct irdma_puda_buf *rbuf)
2509 {
2510         ibdev_dbg(&cm_node->iwdev->ibdev,
2511                   "CM: caller: %pS cm_node=%p state=%d rem_port=0x%04x loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4\n",
2512                   __builtin_return_address(0), cm_node, cm_node->state,
2513                   cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr,
2514                   cm_node->loc_addr);
2515
2516         irdma_cleanup_retrans_entry(cm_node);
2517         switch (cm_node->state) {
2518         case IRDMA_CM_STATE_SYN_SENT:
2519         case IRDMA_CM_STATE_MPAREQ_SENT:
2520                 switch (cm_node->mpa_frame_rev) {
2521                 case IETF_MPA_V2:
2522                         /* Drop down to MPA_V1*/
2523                         cm_node->mpa_frame_rev = IETF_MPA_V1;
2524                         /* send a syn and goto syn sent state */
2525                         cm_node->state = IRDMA_CM_STATE_SYN_SENT;
2526                         if (irdma_send_syn(cm_node, 0))
2527                                 irdma_active_open_err(cm_node, false);
2528                         break;
2529                 case IETF_MPA_V1:
2530                 default:
2531                         irdma_active_open_err(cm_node, false);
2532                         break;
2533                 }
2534                 break;
2535         case IRDMA_CM_STATE_MPAREQ_RCVD:
2536                 atomic_inc(&cm_node->passive_state);
2537                 break;
2538         case IRDMA_CM_STATE_ESTABLISHED:
2539         case IRDMA_CM_STATE_SYN_RCVD:
2540         case IRDMA_CM_STATE_LISTENING:
2541                 irdma_passive_open_err(cm_node, false);
2542                 break;
2543         case IRDMA_CM_STATE_OFFLOADED:
2544                 irdma_active_open_err(cm_node, false);
2545                 break;
2546         case IRDMA_CM_STATE_CLOSED:
2547                 break;
2548         case IRDMA_CM_STATE_FIN_WAIT2:
2549         case IRDMA_CM_STATE_FIN_WAIT1:
2550         case IRDMA_CM_STATE_LAST_ACK:
2551         case IRDMA_CM_STATE_TIME_WAIT:
2552                 cm_node->state = IRDMA_CM_STATE_CLOSED;
2553                 irdma_rem_ref_cm_node(cm_node);
2554                 break;
2555         default:
2556                 break;
2557         }
2558 }
2559
2560 /**
2561  * irdma_handle_rcv_mpa - Process a recv'd mpa buffer
2562  * @cm_node: connection's node
2563  * @rbuf: receive buffer
2564  */
2565 static void irdma_handle_rcv_mpa(struct irdma_cm_node *cm_node,
2566                                  struct irdma_puda_buf *rbuf)
2567 {
2568         int err;
2569         int datasize = rbuf->datalen;
2570         u8 *dataloc = rbuf->data;
2571
2572         enum irdma_cm_event_type type = IRDMA_CM_EVENT_UNKNOWN;
2573         u32 res_type;
2574
2575         err = irdma_parse_mpa(cm_node, dataloc, &res_type, datasize);
2576         if (err) {
2577                 if (cm_node->state == IRDMA_CM_STATE_MPAREQ_SENT)
2578                         irdma_active_open_err(cm_node, true);
2579                 else
2580                         irdma_passive_open_err(cm_node, true);
2581                 return;
2582         }
2583
2584         switch (cm_node->state) {
2585         case IRDMA_CM_STATE_ESTABLISHED:
2586                 if (res_type == IRDMA_MPA_REQUEST_REJECT)
2587                         ibdev_dbg(&cm_node->iwdev->ibdev,
2588                                   "CM: state for reject\n");
2589                 cm_node->state = IRDMA_CM_STATE_MPAREQ_RCVD;
2590                 type = IRDMA_CM_EVENT_MPA_REQ;
2591                 irdma_send_ack(cm_node); /* ACK received MPA request */
2592                 atomic_set(&cm_node->passive_state,
2593                            IRDMA_PASSIVE_STATE_INDICATED);
2594                 break;
2595         case IRDMA_CM_STATE_MPAREQ_SENT:
2596                 irdma_cleanup_retrans_entry(cm_node);
2597                 if (res_type == IRDMA_MPA_REQUEST_REJECT) {
2598                         type = IRDMA_CM_EVENT_MPA_REJECT;
2599                         cm_node->state = IRDMA_CM_STATE_MPAREJ_RCVD;
2600                 } else {
2601                         type = IRDMA_CM_EVENT_CONNECTED;
2602                         cm_node->state = IRDMA_CM_STATE_OFFLOADED;
2603                 }
2604                 irdma_send_ack(cm_node);
2605                 break;
2606         default:
2607                 ibdev_dbg(&cm_node->iwdev->ibdev,
2608                           "CM: wrong cm_node state =%d\n", cm_node->state);
2609                 break;
2610         }
2611         irdma_create_event(cm_node, type);
2612 }
2613
2614 /**
2615  * irdma_check_syn - Check for error on received syn ack
2616  * @cm_node: connection's node
2617  * @tcph: pointer tcp header
2618  */
2619 static int irdma_check_syn(struct irdma_cm_node *cm_node, struct tcphdr *tcph)
2620 {
2621         if (ntohl(tcph->ack_seq) != cm_node->tcp_cntxt.loc_seq_num) {
2622                 irdma_active_open_err(cm_node, true);
2623                 return 1;
2624         }
2625
2626         return 0;
2627 }
2628
2629 /**
2630  * irdma_check_seq - check seq numbers if OK
2631  * @cm_node: connection's node
2632  * @tcph: pointer tcp header
2633  */
2634 static int irdma_check_seq(struct irdma_cm_node *cm_node, struct tcphdr *tcph)
2635 {
2636         u32 seq;
2637         u32 ack_seq;
2638         u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num;
2639         u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt;
2640         u32 rcv_wnd;
2641         int err = 0;
2642
2643         seq = ntohl(tcph->seq);
2644         ack_seq = ntohl(tcph->ack_seq);
2645         rcv_wnd = cm_node->tcp_cntxt.rcv_wnd;
2646         if (ack_seq != loc_seq_num ||
2647             !between(seq, rcv_nxt, (rcv_nxt + rcv_wnd)))
2648                 err = -1;
2649         if (err)
2650                 ibdev_dbg(&cm_node->iwdev->ibdev,
2651                           "CM: seq number err\n");
2652
2653         return err;
2654 }
2655
2656 void irdma_add_conn_est_qh(struct irdma_cm_node *cm_node)
2657 {
2658         struct irdma_cm_info nfo;
2659
2660         irdma_get_addr_info(cm_node, &nfo);
2661         nfo.qh_qpid = cm_node->iwdev->vsi.ilq->qp_id;
2662         irdma_manage_qhash(cm_node->iwdev, &nfo,
2663                            IRDMA_QHASH_TYPE_TCP_ESTABLISHED,
2664                            IRDMA_QHASH_MANAGE_TYPE_ADD,
2665                            cm_node, false);
2666         cm_node->qhash_set = true;
2667 }
2668
2669 /**
2670  * irdma_handle_syn_pkt - is for Passive node
2671  * @cm_node: connection's node
2672  * @rbuf: receive buffer
2673  */
2674 static void irdma_handle_syn_pkt(struct irdma_cm_node *cm_node,
2675                                  struct irdma_puda_buf *rbuf)
2676 {
2677         struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
2678         int err;
2679         u32 inc_sequence;
2680         int optionsize;
2681
2682         optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
2683         inc_sequence = ntohl(tcph->seq);
2684
2685         switch (cm_node->state) {
2686         case IRDMA_CM_STATE_SYN_SENT:
2687         case IRDMA_CM_STATE_MPAREQ_SENT:
2688                 /* Rcvd syn on active open connection */
2689                 irdma_active_open_err(cm_node, 1);
2690                 break;
2691         case IRDMA_CM_STATE_LISTENING:
2692                 /* Passive OPEN */
2693                 if (atomic_read(&cm_node->listener->pend_accepts_cnt) >
2694                     cm_node->listener->backlog) {
2695                         cm_node->cm_core->stats_backlog_drops++;
2696                         irdma_passive_open_err(cm_node, false);
2697                         break;
2698                 }
2699                 err = irdma_handle_tcp_options(cm_node, tcph, optionsize, 1);
2700                 if (err) {
2701                         irdma_passive_open_err(cm_node, false);
2702                         /* drop pkt */
2703                         break;
2704                 }
2705                 err = cm_node->cm_core->cm_create_ah(cm_node, false);
2706                 if (err) {
2707                         irdma_passive_open_err(cm_node, false);
2708                         /* drop pkt */
2709                         break;
2710                 }
2711                 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
2712                 cm_node->accept_pend = 1;
2713                 atomic_inc(&cm_node->listener->pend_accepts_cnt);
2714
2715                 cm_node->state = IRDMA_CM_STATE_SYN_RCVD;
2716                 break;
2717         case IRDMA_CM_STATE_CLOSED:
2718                 irdma_cleanup_retrans_entry(cm_node);
2719                 refcount_inc(&cm_node->refcnt);
2720                 irdma_send_reset(cm_node);
2721                 break;
2722         case IRDMA_CM_STATE_OFFLOADED:
2723         case IRDMA_CM_STATE_ESTABLISHED:
2724         case IRDMA_CM_STATE_FIN_WAIT1:
2725         case IRDMA_CM_STATE_FIN_WAIT2:
2726         case IRDMA_CM_STATE_MPAREQ_RCVD:
2727         case IRDMA_CM_STATE_LAST_ACK:
2728         case IRDMA_CM_STATE_CLOSING:
2729         case IRDMA_CM_STATE_UNKNOWN:
2730         default:
2731                 break;
2732         }
2733 }
2734
2735 /**
2736  * irdma_handle_synack_pkt - Process SYN+ACK packet (active side)
2737  * @cm_node: connection's node
2738  * @rbuf: receive buffer
2739  */
2740 static void irdma_handle_synack_pkt(struct irdma_cm_node *cm_node,
2741                                     struct irdma_puda_buf *rbuf)
2742 {
2743         struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
2744         int err;
2745         u32 inc_sequence;
2746         int optionsize;
2747
2748         optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
2749         inc_sequence = ntohl(tcph->seq);
2750         switch (cm_node->state) {
2751         case IRDMA_CM_STATE_SYN_SENT:
2752                 irdma_cleanup_retrans_entry(cm_node);
2753                 /* active open */
2754                 if (irdma_check_syn(cm_node, tcph)) {
2755                         ibdev_dbg(&cm_node->iwdev->ibdev,
2756                                   "CM: check syn fail\n");
2757                         return;
2758                 }
2759                 cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
2760                 /* setup options */
2761                 err = irdma_handle_tcp_options(cm_node, tcph, optionsize, 0);
2762                 if (err) {
2763                         ibdev_dbg(&cm_node->iwdev->ibdev,
2764                                   "CM: cm_node=%p tcp_options failed\n",
2765                                   cm_node);
2766                         break;
2767                 }
2768                 irdma_cleanup_retrans_entry(cm_node);
2769                 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
2770                 irdma_send_ack(cm_node); /* ACK  for the syn_ack */
2771                 err = irdma_send_mpa_request(cm_node);
2772                 if (err) {
2773                         ibdev_dbg(&cm_node->iwdev->ibdev,
2774                                   "CM: cm_node=%p irdma_send_mpa_request failed\n",
2775                                   cm_node);
2776                         break;
2777                 }
2778                 cm_node->state = IRDMA_CM_STATE_MPAREQ_SENT;
2779                 break;
2780         case IRDMA_CM_STATE_MPAREQ_RCVD:
2781                 irdma_passive_open_err(cm_node, true);
2782                 break;
2783         case IRDMA_CM_STATE_LISTENING:
2784                 cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
2785                 irdma_cleanup_retrans_entry(cm_node);
2786                 cm_node->state = IRDMA_CM_STATE_CLOSED;
2787                 irdma_send_reset(cm_node);
2788                 break;
2789         case IRDMA_CM_STATE_CLOSED:
2790                 cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
2791                 irdma_cleanup_retrans_entry(cm_node);
2792                 refcount_inc(&cm_node->refcnt);
2793                 irdma_send_reset(cm_node);
2794                 break;
2795         case IRDMA_CM_STATE_ESTABLISHED:
2796         case IRDMA_CM_STATE_FIN_WAIT1:
2797         case IRDMA_CM_STATE_FIN_WAIT2:
2798         case IRDMA_CM_STATE_LAST_ACK:
2799         case IRDMA_CM_STATE_OFFLOADED:
2800         case IRDMA_CM_STATE_CLOSING:
2801         case IRDMA_CM_STATE_UNKNOWN:
2802         case IRDMA_CM_STATE_MPAREQ_SENT:
2803         default:
2804                 break;
2805         }
2806 }
2807
2808 /**
2809  * irdma_handle_ack_pkt - process packet with ACK
2810  * @cm_node: connection's node
2811  * @rbuf: receive buffer
2812  */
2813 static int irdma_handle_ack_pkt(struct irdma_cm_node *cm_node,
2814                                 struct irdma_puda_buf *rbuf)
2815 {
2816         struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
2817         u32 inc_sequence;
2818         int ret;
2819         int optionsize;
2820         u32 datasize = rbuf->datalen;
2821
2822         optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
2823
2824         if (irdma_check_seq(cm_node, tcph))
2825                 return -EINVAL;
2826
2827         inc_sequence = ntohl(tcph->seq);
2828         switch (cm_node->state) {
2829         case IRDMA_CM_STATE_SYN_RCVD:
2830                 irdma_cleanup_retrans_entry(cm_node);
2831                 ret = irdma_handle_tcp_options(cm_node, tcph, optionsize, 1);
2832                 if (ret)
2833                         return ret;
2834                 cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
2835                 cm_node->state = IRDMA_CM_STATE_ESTABLISHED;
2836                 if (datasize) {
2837                         cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
2838                         irdma_handle_rcv_mpa(cm_node, rbuf);
2839                 }
2840                 break;
2841         case IRDMA_CM_STATE_ESTABLISHED:
2842                 irdma_cleanup_retrans_entry(cm_node);
2843                 if (datasize) {
2844                         cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
2845                         irdma_handle_rcv_mpa(cm_node, rbuf);
2846                 }
2847                 break;
2848         case IRDMA_CM_STATE_MPAREQ_SENT:
2849                 cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
2850                 if (datasize) {
2851                         cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
2852                         cm_node->ack_rcvd = false;
2853                         irdma_handle_rcv_mpa(cm_node, rbuf);
2854                 } else {
2855                         cm_node->ack_rcvd = true;
2856                 }
2857                 break;
2858         case IRDMA_CM_STATE_LISTENING:
2859                 irdma_cleanup_retrans_entry(cm_node);
2860                 cm_node->state = IRDMA_CM_STATE_CLOSED;
2861                 irdma_send_reset(cm_node);
2862                 break;
2863         case IRDMA_CM_STATE_CLOSED:
2864                 irdma_cleanup_retrans_entry(cm_node);
2865                 refcount_inc(&cm_node->refcnt);
2866                 irdma_send_reset(cm_node);
2867                 break;
2868         case IRDMA_CM_STATE_LAST_ACK:
2869         case IRDMA_CM_STATE_CLOSING:
2870                 irdma_cleanup_retrans_entry(cm_node);
2871                 cm_node->state = IRDMA_CM_STATE_CLOSED;
2872                 irdma_rem_ref_cm_node(cm_node);
2873                 break;
2874         case IRDMA_CM_STATE_FIN_WAIT1:
2875                 irdma_cleanup_retrans_entry(cm_node);
2876                 cm_node->state = IRDMA_CM_STATE_FIN_WAIT2;
2877                 break;
2878         case IRDMA_CM_STATE_SYN_SENT:
2879         case IRDMA_CM_STATE_FIN_WAIT2:
2880         case IRDMA_CM_STATE_OFFLOADED:
2881         case IRDMA_CM_STATE_MPAREQ_RCVD:
2882         case IRDMA_CM_STATE_UNKNOWN:
2883         default:
2884                 irdma_cleanup_retrans_entry(cm_node);
2885                 break;
2886         }
2887
2888         return 0;
2889 }
2890
2891 /**
2892  * irdma_process_pkt - process cm packet
2893  * @cm_node: connection's node
2894  * @rbuf: receive buffer
2895  */
2896 static void irdma_process_pkt(struct irdma_cm_node *cm_node,
2897                               struct irdma_puda_buf *rbuf)
2898 {
2899         enum irdma_tcpip_pkt_type pkt_type = IRDMA_PKT_TYPE_UNKNOWN;
2900         struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
2901         u32 fin_set = 0;
2902         int err;
2903
2904         if (tcph->rst) {
2905                 pkt_type = IRDMA_PKT_TYPE_RST;
2906         } else if (tcph->syn) {
2907                 pkt_type = IRDMA_PKT_TYPE_SYN;
2908                 if (tcph->ack)
2909                         pkt_type = IRDMA_PKT_TYPE_SYNACK;
2910         } else if (tcph->ack) {
2911                 pkt_type = IRDMA_PKT_TYPE_ACK;
2912         }
2913         if (tcph->fin)
2914                 fin_set = 1;
2915
2916         switch (pkt_type) {
2917         case IRDMA_PKT_TYPE_SYN:
2918                 irdma_handle_syn_pkt(cm_node, rbuf);
2919                 break;
2920         case IRDMA_PKT_TYPE_SYNACK:
2921                 irdma_handle_synack_pkt(cm_node, rbuf);
2922                 break;
2923         case IRDMA_PKT_TYPE_ACK:
2924                 err = irdma_handle_ack_pkt(cm_node, rbuf);
2925                 if (fin_set && !err)
2926                         irdma_handle_fin_pkt(cm_node);
2927                 break;
2928         case IRDMA_PKT_TYPE_RST:
2929                 irdma_handle_rst_pkt(cm_node, rbuf);
2930                 break;
2931         default:
2932                 if (fin_set &&
2933                     (!irdma_check_seq(cm_node, (struct tcphdr *)rbuf->tcph)))
2934                         irdma_handle_fin_pkt(cm_node);
2935                 break;
2936         }
2937 }
2938
2939 /**
2940  * irdma_make_listen_node - create a listen node with params
2941  * @cm_core: cm's core
2942  * @iwdev: iwarp device structure
2943  * @cm_info: quad info for connection
2944  */
2945 static struct irdma_cm_listener *
2946 irdma_make_listen_node(struct irdma_cm_core *cm_core,
2947                        struct irdma_device *iwdev,
2948                        struct irdma_cm_info *cm_info)
2949 {
2950         struct irdma_cm_listener *listener;
2951         unsigned long flags;
2952
2953         /* cannot have multiple matching listeners */
2954         listener =
2955                 irdma_find_listener(cm_core, cm_info->loc_addr, cm_info->ipv4,
2956                                     cm_info->loc_port, cm_info->vlan_id,
2957                                     IRDMA_CM_LISTENER_EITHER_STATE);
2958         if (listener &&
2959             listener->listener_state == IRDMA_CM_LISTENER_ACTIVE_STATE) {
2960                 refcount_dec(&listener->refcnt);
2961                 return NULL;
2962         }
2963
2964         if (!listener) {
2965                 /* create a CM listen node
2966                  * 1/2 node to compare incoming traffic to
2967                  */
2968                 listener = kzalloc(sizeof(*listener), GFP_KERNEL);
2969                 if (!listener)
2970                         return NULL;
2971                 cm_core->stats_listen_nodes_created++;
2972                 memcpy(listener->loc_addr, cm_info->loc_addr,
2973                        sizeof(listener->loc_addr));
2974                 listener->loc_port = cm_info->loc_port;
2975
2976                 INIT_LIST_HEAD(&listener->child_listen_list);
2977
2978                 refcount_set(&listener->refcnt, 1);
2979         } else {
2980                 listener->reused_node = 1;
2981         }
2982
2983         listener->cm_id = cm_info->cm_id;
2984         listener->ipv4 = cm_info->ipv4;
2985         listener->vlan_id = cm_info->vlan_id;
2986         atomic_set(&listener->pend_accepts_cnt, 0);
2987         listener->cm_core = cm_core;
2988         listener->iwdev = iwdev;
2989
2990         listener->backlog = cm_info->backlog;
2991         listener->listener_state = IRDMA_CM_LISTENER_ACTIVE_STATE;
2992
2993         if (!listener->reused_node) {
2994                 spin_lock_irqsave(&cm_core->listen_list_lock, flags);
2995                 list_add(&listener->list, &cm_core->listen_list);
2996                 spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
2997         }
2998
2999         return listener;
3000 }
3001
3002 /**
3003  * irdma_create_cm_node - make a connection node with params
3004  * @cm_core: cm's core
3005  * @iwdev: iwarp device structure
3006  * @conn_param: connection parameters
3007  * @cm_info: quad info for connection
3008  * @caller_cm_node: pointer to cm_node structure to return
3009  */
3010 static int irdma_create_cm_node(struct irdma_cm_core *cm_core,
3011                                 struct irdma_device *iwdev,
3012                                 struct iw_cm_conn_param *conn_param,
3013                                 struct irdma_cm_info *cm_info,
3014                                 struct irdma_cm_node **caller_cm_node)
3015 {
3016         struct irdma_cm_node *cm_node;
3017         u16 private_data_len = conn_param->private_data_len;
3018         const void *private_data = conn_param->private_data;
3019
3020         /* create a CM connection node */
3021         cm_node = irdma_make_cm_node(cm_core, iwdev, cm_info, NULL);
3022         if (!cm_node)
3023                 return -ENOMEM;
3024
3025         /* set our node side to client (active) side */
3026         cm_node->tcp_cntxt.client = 1;
3027         cm_node->tcp_cntxt.rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE;
3028
3029         irdma_record_ird_ord(cm_node, conn_param->ird, conn_param->ord);
3030
3031         cm_node->pdata.size = private_data_len;
3032         cm_node->pdata.addr = cm_node->pdata_buf;
3033
3034         memcpy(cm_node->pdata_buf, private_data, private_data_len);
3035         *caller_cm_node = cm_node;
3036
3037         return 0;
3038 }
3039
3040 /**
3041  * irdma_cm_reject - reject and teardown a connection
3042  * @cm_node: connection's node
3043  * @pdata: ptr to private data for reject
3044  * @plen: size of private data
3045  */
3046 static int irdma_cm_reject(struct irdma_cm_node *cm_node, const void *pdata,
3047                            u8 plen)
3048 {
3049         int ret;
3050         int passive_state;
3051
3052         if (cm_node->tcp_cntxt.client)
3053                 return 0;
3054
3055         irdma_cleanup_retrans_entry(cm_node);
3056
3057         passive_state = atomic_add_return(1, &cm_node->passive_state);
3058         if (passive_state == IRDMA_SEND_RESET_EVENT) {
3059                 cm_node->state = IRDMA_CM_STATE_CLOSED;
3060                 irdma_rem_ref_cm_node(cm_node);
3061                 return 0;
3062         }
3063
3064         if (cm_node->state == IRDMA_CM_STATE_LISTENER_DESTROYED) {
3065                 irdma_rem_ref_cm_node(cm_node);
3066                 return 0;
3067         }
3068
3069         ret = irdma_send_mpa_reject(cm_node, pdata, plen);
3070         if (!ret)
3071                 return 0;
3072
3073         cm_node->state = IRDMA_CM_STATE_CLOSED;
3074         if (irdma_send_reset(cm_node))
3075                 ibdev_dbg(&cm_node->iwdev->ibdev,
3076                           "CM: send reset failed\n");
3077
3078         return ret;
3079 }
3080
3081 /**
3082  * irdma_cm_close - close of cm connection
3083  * @cm_node: connection's node
3084  */
3085 static int irdma_cm_close(struct irdma_cm_node *cm_node)
3086 {
3087         switch (cm_node->state) {
3088         case IRDMA_CM_STATE_SYN_RCVD:
3089         case IRDMA_CM_STATE_SYN_SENT:
3090         case IRDMA_CM_STATE_ONE_SIDE_ESTABLISHED:
3091         case IRDMA_CM_STATE_ESTABLISHED:
3092         case IRDMA_CM_STATE_ACCEPTING:
3093         case IRDMA_CM_STATE_MPAREQ_SENT:
3094         case IRDMA_CM_STATE_MPAREQ_RCVD:
3095                 irdma_cleanup_retrans_entry(cm_node);
3096                 irdma_send_reset(cm_node);
3097                 break;
3098         case IRDMA_CM_STATE_CLOSE_WAIT:
3099                 cm_node->state = IRDMA_CM_STATE_LAST_ACK;
3100                 irdma_send_fin(cm_node);
3101                 break;
3102         case IRDMA_CM_STATE_FIN_WAIT1:
3103         case IRDMA_CM_STATE_FIN_WAIT2:
3104         case IRDMA_CM_STATE_LAST_ACK:
3105         case IRDMA_CM_STATE_TIME_WAIT:
3106         case IRDMA_CM_STATE_CLOSING:
3107                 return -EINVAL;
3108         case IRDMA_CM_STATE_LISTENING:
3109                 irdma_cleanup_retrans_entry(cm_node);
3110                 irdma_send_reset(cm_node);
3111                 break;
3112         case IRDMA_CM_STATE_MPAREJ_RCVD:
3113         case IRDMA_CM_STATE_UNKNOWN:
3114         case IRDMA_CM_STATE_INITED:
3115         case IRDMA_CM_STATE_CLOSED:
3116         case IRDMA_CM_STATE_LISTENER_DESTROYED:
3117                 irdma_rem_ref_cm_node(cm_node);
3118                 break;
3119         case IRDMA_CM_STATE_OFFLOADED:
3120                 if (cm_node->send_entry)
3121                         ibdev_dbg(&cm_node->iwdev->ibdev,
3122                                   "CM: CM send_entry in OFFLOADED state\n");
3123                 irdma_rem_ref_cm_node(cm_node);
3124                 break;
3125         }
3126
3127         return 0;
3128 }
3129
3130 /**
3131  * irdma_receive_ilq - recv an ETHERNET packet, and process it
3132  * through CM
3133  * @vsi: VSI structure of dev
3134  * @rbuf: receive buffer
3135  */
3136 void irdma_receive_ilq(struct irdma_sc_vsi *vsi, struct irdma_puda_buf *rbuf)
3137 {
3138         struct irdma_cm_node *cm_node;
3139         struct irdma_cm_listener *listener;
3140         struct iphdr *iph;
3141         struct ipv6hdr *ip6h;
3142         struct tcphdr *tcph;
3143         struct irdma_cm_info cm_info = {};
3144         struct irdma_device *iwdev = vsi->back_vsi;
3145         struct irdma_cm_core *cm_core = &iwdev->cm_core;
3146         struct vlan_ethhdr *ethh;
3147         u16 vtag;
3148
3149         /* if vlan, then maclen = 18 else 14 */
3150         iph = (struct iphdr *)rbuf->iph;
3151         print_hex_dump_debug("ILQ: RECEIVE ILQ BUFFER", DUMP_PREFIX_OFFSET,
3152                              16, 8, rbuf->mem.va, rbuf->totallen, false);
3153         if (iwdev->rf->sc_dev.hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
3154                 if (rbuf->vlan_valid) {
3155                         vtag = rbuf->vlan_id;
3156                         cm_info.user_pri = (vtag & VLAN_PRIO_MASK) >>
3157                                            VLAN_PRIO_SHIFT;
3158                         cm_info.vlan_id = vtag & VLAN_VID_MASK;
3159                 } else {
3160                         cm_info.vlan_id = 0xFFFF;
3161                 }
3162         } else {
3163                 ethh = rbuf->mem.va;
3164
3165                 if (ethh->h_vlan_proto == htons(ETH_P_8021Q)) {
3166                         vtag = ntohs(ethh->h_vlan_TCI);
3167                         cm_info.user_pri = (vtag & VLAN_PRIO_MASK) >>
3168                                            VLAN_PRIO_SHIFT;
3169                         cm_info.vlan_id = vtag & VLAN_VID_MASK;
3170                         ibdev_dbg(&cm_core->iwdev->ibdev,
3171                                   "CM: vlan_id=%d\n", cm_info.vlan_id);
3172                 } else {
3173                         cm_info.vlan_id = 0xFFFF;
3174                 }
3175         }
3176         tcph = (struct tcphdr *)rbuf->tcph;
3177
3178         if (rbuf->ipv4) {
3179                 cm_info.loc_addr[0] = ntohl(iph->daddr);
3180                 cm_info.rem_addr[0] = ntohl(iph->saddr);
3181                 cm_info.ipv4 = true;
3182                 cm_info.tos = iph->tos;
3183         } else {
3184                 ip6h = (struct ipv6hdr *)rbuf->iph;
3185                 irdma_copy_ip_ntohl(cm_info.loc_addr,
3186                                     ip6h->daddr.in6_u.u6_addr32);
3187                 irdma_copy_ip_ntohl(cm_info.rem_addr,
3188                                     ip6h->saddr.in6_u.u6_addr32);
3189                 cm_info.ipv4 = false;
3190                 cm_info.tos = (ip6h->priority << 4) | (ip6h->flow_lbl[0] >> 4);
3191         }
3192         cm_info.loc_port = ntohs(tcph->dest);
3193         cm_info.rem_port = ntohs(tcph->source);
3194         cm_node = irdma_find_node(cm_core, cm_info.rem_port, cm_info.rem_addr,
3195                                   cm_info.loc_port, cm_info.loc_addr, cm_info.vlan_id);
3196
3197         if (!cm_node) {
3198                 /* Only type of packet accepted are for the
3199                  * PASSIVE open (syn only)
3200                  */
3201                 if (!tcph->syn || tcph->ack)
3202                         return;
3203
3204                 listener = irdma_find_listener(cm_core,
3205                                                cm_info.loc_addr,
3206                                                cm_info.ipv4,
3207                                                cm_info.loc_port,
3208                                                cm_info.vlan_id,
3209                                                IRDMA_CM_LISTENER_ACTIVE_STATE);
3210                 if (!listener) {
3211                         cm_info.cm_id = NULL;
3212                         ibdev_dbg(&cm_core->iwdev->ibdev,
3213                                   "CM: no listener found\n");
3214                         return;
3215                 }
3216
3217                 cm_info.cm_id = listener->cm_id;
3218                 cm_node = irdma_make_cm_node(cm_core, iwdev, &cm_info,
3219                                              listener);
3220                 if (!cm_node) {
3221                         ibdev_dbg(&cm_core->iwdev->ibdev,
3222                                   "CM: allocate node failed\n");
3223                         refcount_dec(&listener->refcnt);
3224                         return;
3225                 }
3226
3227                 if (!tcph->rst && !tcph->fin) {
3228                         cm_node->state = IRDMA_CM_STATE_LISTENING;
3229                 } else {
3230                         irdma_rem_ref_cm_node(cm_node);
3231                         return;
3232                 }
3233
3234                 refcount_inc(&cm_node->refcnt);
3235         } else if (cm_node->state == IRDMA_CM_STATE_OFFLOADED) {
3236                 irdma_rem_ref_cm_node(cm_node);
3237                 return;
3238         }
3239
3240         irdma_process_pkt(cm_node, rbuf);
3241         irdma_rem_ref_cm_node(cm_node);
3242 }
3243
3244 static int irdma_add_qh(struct irdma_cm_node *cm_node, bool active)
3245 {
3246         if (!active)
3247                 irdma_add_conn_est_qh(cm_node);
3248         return 0;
3249 }
3250
3251 static void irdma_cm_free_ah_nop(struct irdma_cm_node *cm_node)
3252 {
3253 }
3254
3255 /**
3256  * irdma_setup_cm_core - setup top level instance of a cm core
3257  * @iwdev: iwarp device structure
3258  * @rdma_ver: HW version
3259  */
3260 int irdma_setup_cm_core(struct irdma_device *iwdev, u8 rdma_ver)
3261 {
3262         struct irdma_cm_core *cm_core = &iwdev->cm_core;
3263
3264         cm_core->iwdev = iwdev;
3265         cm_core->dev = &iwdev->rf->sc_dev;
3266
3267         /* Handles CM event work items send to Iwarp core */
3268         cm_core->event_wq = alloc_ordered_workqueue("iwarp-event-wq", 0);
3269         if (!cm_core->event_wq)
3270                 return -ENOMEM;
3271
3272         INIT_LIST_HEAD(&cm_core->listen_list);
3273
3274         timer_setup(&cm_core->tcp_timer, irdma_cm_timer_tick, 0);
3275
3276         spin_lock_init(&cm_core->ht_lock);
3277         spin_lock_init(&cm_core->listen_list_lock);
3278         spin_lock_init(&cm_core->apbvt_lock);
3279         switch (rdma_ver) {
3280         case IRDMA_GEN_1:
3281                 cm_core->form_cm_frame = irdma_form_uda_cm_frame;
3282                 cm_core->cm_create_ah = irdma_add_qh;
3283                 cm_core->cm_free_ah = irdma_cm_free_ah_nop;
3284                 break;
3285         case IRDMA_GEN_2:
3286         default:
3287                 cm_core->form_cm_frame = irdma_form_ah_cm_frame;
3288                 cm_core->cm_create_ah = irdma_cm_create_ah;
3289                 cm_core->cm_free_ah = irdma_cm_free_ah;
3290         }
3291
3292         return 0;
3293 }
3294
3295 /**
3296  * irdma_cleanup_cm_core - deallocate a top level instance of a
3297  * cm core
3298  * @cm_core: cm's core
3299  */
3300 void irdma_cleanup_cm_core(struct irdma_cm_core *cm_core)
3301 {
3302         if (!cm_core)
3303                 return;
3304
3305         del_timer_sync(&cm_core->tcp_timer);
3306
3307         destroy_workqueue(cm_core->event_wq);
3308         cm_core->dev->ws_reset(&cm_core->iwdev->vsi);
3309 }
3310
3311 /**
3312  * irdma_init_tcp_ctx - setup qp context
3313  * @cm_node: connection's node
3314  * @tcp_info: offload info for tcp
3315  * @iwqp: associate qp for the connection
3316  */
3317 static void irdma_init_tcp_ctx(struct irdma_cm_node *cm_node,
3318                                struct irdma_tcp_offload_info *tcp_info,
3319                                struct irdma_qp *iwqp)
3320 {
3321         tcp_info->ipv4 = cm_node->ipv4;
3322         tcp_info->drop_ooo_seg = !iwqp->iwdev->iw_ooo;
3323         tcp_info->wscale = true;
3324         tcp_info->ignore_tcp_opt = true;
3325         tcp_info->ignore_tcp_uns_opt = true;
3326         tcp_info->no_nagle = false;
3327
3328         tcp_info->ttl = IRDMA_DEFAULT_TTL;
3329         tcp_info->rtt_var = IRDMA_DEFAULT_RTT_VAR;
3330         tcp_info->ss_thresh = IRDMA_DEFAULT_SS_THRESH;
3331         tcp_info->rexmit_thresh = IRDMA_DEFAULT_REXMIT_THRESH;
3332
3333         tcp_info->tcp_state = IRDMA_TCP_STATE_ESTABLISHED;
3334         tcp_info->snd_wscale = cm_node->tcp_cntxt.snd_wscale;
3335         tcp_info->rcv_wscale = cm_node->tcp_cntxt.rcv_wscale;
3336
3337         tcp_info->snd_nxt = cm_node->tcp_cntxt.loc_seq_num;
3338         tcp_info->snd_wnd = cm_node->tcp_cntxt.snd_wnd;
3339         tcp_info->rcv_nxt = cm_node->tcp_cntxt.rcv_nxt;
3340         tcp_info->snd_max = cm_node->tcp_cntxt.loc_seq_num;
3341
3342         tcp_info->snd_una = cm_node->tcp_cntxt.loc_seq_num;
3343         tcp_info->cwnd = 2 * cm_node->tcp_cntxt.mss;
3344         tcp_info->snd_wl1 = cm_node->tcp_cntxt.rcv_nxt;
3345         tcp_info->snd_wl2 = cm_node->tcp_cntxt.loc_seq_num;
3346         tcp_info->max_snd_window = cm_node->tcp_cntxt.max_snd_wnd;
3347         tcp_info->rcv_wnd = cm_node->tcp_cntxt.rcv_wnd
3348                             << cm_node->tcp_cntxt.rcv_wscale;
3349
3350         tcp_info->flow_label = 0;
3351         tcp_info->snd_mss = (u32)cm_node->tcp_cntxt.mss;
3352         tcp_info->tos = cm_node->tos;
3353         if (cm_node->vlan_id < VLAN_N_VID) {
3354                 tcp_info->insert_vlan_tag = true;
3355                 tcp_info->vlan_tag = cm_node->vlan_id;
3356                 tcp_info->vlan_tag |= cm_node->user_pri << VLAN_PRIO_SHIFT;
3357         }
3358         if (cm_node->ipv4) {
3359                 tcp_info->src_port = cm_node->loc_port;
3360                 tcp_info->dst_port = cm_node->rem_port;
3361
3362                 tcp_info->dest_ip_addr[3] = cm_node->rem_addr[0];
3363                 tcp_info->local_ipaddr[3] = cm_node->loc_addr[0];
3364                 tcp_info->arp_idx = (u16)irdma_arp_table(iwqp->iwdev->rf,
3365                                                          &tcp_info->dest_ip_addr[3],
3366                                                          true, NULL,
3367                                                          IRDMA_ARP_RESOLVE);
3368         } else {
3369                 tcp_info->src_port = cm_node->loc_port;
3370                 tcp_info->dst_port = cm_node->rem_port;
3371                 memcpy(tcp_info->dest_ip_addr, cm_node->rem_addr,
3372                        sizeof(tcp_info->dest_ip_addr));
3373                 memcpy(tcp_info->local_ipaddr, cm_node->loc_addr,
3374                        sizeof(tcp_info->local_ipaddr));
3375
3376                 tcp_info->arp_idx = (u16)irdma_arp_table(iwqp->iwdev->rf,
3377                                                          &tcp_info->dest_ip_addr[0],
3378                                                          false, NULL,
3379                                                          IRDMA_ARP_RESOLVE);
3380         }
3381 }
3382
3383 /**
3384  * irdma_cm_init_tsa_conn - setup qp for RTS
3385  * @iwqp: associate qp for the connection
3386  * @cm_node: connection's node
3387  */
3388 static void irdma_cm_init_tsa_conn(struct irdma_qp *iwqp,
3389                                    struct irdma_cm_node *cm_node)
3390 {
3391         struct irdma_iwarp_offload_info *iwarp_info;
3392         struct irdma_qp_host_ctx_info *ctx_info;
3393
3394         iwarp_info = &iwqp->iwarp_info;
3395         ctx_info = &iwqp->ctx_info;
3396
3397         ctx_info->tcp_info = &iwqp->tcp_info;
3398         ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
3399         ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
3400
3401         iwarp_info->ord_size = cm_node->ord_size;
3402         iwarp_info->ird_size = cm_node->ird_size;
3403         iwarp_info->rd_en = true;
3404         iwarp_info->rdmap_ver = 1;
3405         iwarp_info->ddp_ver = 1;
3406         iwarp_info->pd_id = iwqp->iwpd->sc_pd.pd_id;
3407
3408         ctx_info->tcp_info_valid = true;
3409         ctx_info->iwarp_info_valid = true;
3410         ctx_info->user_pri = cm_node->user_pri;
3411
3412         irdma_init_tcp_ctx(cm_node, &iwqp->tcp_info, iwqp);
3413         if (cm_node->snd_mark_en) {
3414                 iwarp_info->snd_mark_en = true;
3415                 iwarp_info->snd_mark_offset = (iwqp->tcp_info.snd_nxt & SNDMARKER_SEQNMASK) +
3416                                                cm_node->lsmm_size;
3417         }
3418
3419         cm_node->state = IRDMA_CM_STATE_OFFLOADED;
3420         iwqp->tcp_info.tcp_state = IRDMA_TCP_STATE_ESTABLISHED;
3421         iwqp->tcp_info.src_mac_addr_idx = iwqp->iwdev->mac_ip_table_idx;
3422
3423         if (cm_node->rcv_mark_en) {
3424                 iwarp_info->rcv_mark_en = true;
3425                 iwarp_info->align_hdrs = true;
3426         }
3427
3428         irdma_sc_qp_setctx(&iwqp->sc_qp, iwqp->host_ctx.va, ctx_info);
3429
3430         /* once tcp_info is set, no need to do it again */
3431         ctx_info->tcp_info_valid = false;
3432         ctx_info->iwarp_info_valid = false;
3433 }
3434
3435 /**
3436  * irdma_cm_disconn - when a connection is being closed
3437  * @iwqp: associated qp for the connection
3438  */
3439 void irdma_cm_disconn(struct irdma_qp *iwqp)
3440 {
3441         struct irdma_device *iwdev = iwqp->iwdev;
3442         struct disconn_work *work;
3443         unsigned long flags;
3444
3445         work = kzalloc(sizeof(*work), GFP_ATOMIC);
3446         if (!work)
3447                 return;
3448
3449         spin_lock_irqsave(&iwdev->rf->qptable_lock, flags);
3450         if (!iwdev->rf->qp_table[iwqp->ibqp.qp_num]) {
3451                 spin_unlock_irqrestore(&iwdev->rf->qptable_lock, flags);
3452                 ibdev_dbg(&iwdev->ibdev,
3453                           "CM: qp_id %d is already freed\n",
3454                           iwqp->ibqp.qp_num);
3455                 kfree(work);
3456                 return;
3457         }
3458         irdma_qp_add_ref(&iwqp->ibqp);
3459         spin_unlock_irqrestore(&iwdev->rf->qptable_lock, flags);
3460
3461         work->iwqp = iwqp;
3462         INIT_WORK(&work->work, irdma_disconnect_worker);
3463         queue_work(iwdev->cleanup_wq, &work->work);
3464 }
3465
3466 /**
3467  * irdma_qp_disconnect - free qp and close cm
3468  * @iwqp: associate qp for the connection
3469  */
3470 static void irdma_qp_disconnect(struct irdma_qp *iwqp)
3471 {
3472         struct irdma_device *iwdev = iwqp->iwdev;
3473
3474         iwqp->active_conn = 0;
3475         /* close the CM node down if it is still active */
3476         ibdev_dbg(&iwdev->ibdev, "CM: Call close API\n");
3477         irdma_cm_close(iwqp->cm_node);
3478 }
3479
3480 /**
3481  * irdma_cm_disconn_true - called by worker thread to disconnect qp
3482  * @iwqp: associate qp for the connection
3483  */
3484 static void irdma_cm_disconn_true(struct irdma_qp *iwqp)
3485 {
3486         struct iw_cm_id *cm_id;
3487         struct irdma_device *iwdev;
3488         struct irdma_sc_qp *qp = &iwqp->sc_qp;
3489         u16 last_ae;
3490         u8 original_hw_tcp_state;
3491         u8 original_ibqp_state;
3492         int disconn_status = 0;
3493         int issue_disconn = 0;
3494         int issue_close = 0;
3495         int issue_flush = 0;
3496         unsigned long flags;
3497         int err;
3498
3499         iwdev = iwqp->iwdev;
3500         spin_lock_irqsave(&iwqp->lock, flags);
3501         if (rdma_protocol_roce(&iwdev->ibdev, 1)) {
3502                 struct ib_qp_attr attr;
3503
3504                 if (iwqp->flush_issued || iwqp->sc_qp.qp_uk.destroy_pending) {
3505                         spin_unlock_irqrestore(&iwqp->lock, flags);
3506                         return;
3507                 }
3508
3509                 spin_unlock_irqrestore(&iwqp->lock, flags);
3510
3511                 attr.qp_state = IB_QPS_ERR;
3512                 irdma_modify_qp_roce(&iwqp->ibqp, &attr, IB_QP_STATE, NULL);
3513                 irdma_ib_qp_event(iwqp, qp->event_type);
3514                 return;
3515         }
3516
3517         cm_id = iwqp->cm_id;
3518         original_hw_tcp_state = iwqp->hw_tcp_state;
3519         original_ibqp_state = iwqp->ibqp_state;
3520         last_ae = iwqp->last_aeq;
3521
3522         if (qp->term_flags) {
3523                 issue_disconn = 1;
3524                 issue_close = 1;
3525                 iwqp->cm_id = NULL;
3526                 irdma_terminate_del_timer(qp);
3527                 if (!iwqp->flush_issued) {
3528                         iwqp->flush_issued = 1;
3529                         issue_flush = 1;
3530                 }
3531         } else if ((original_hw_tcp_state == IRDMA_TCP_STATE_CLOSE_WAIT) ||
3532                    ((original_ibqp_state == IB_QPS_RTS) &&
3533                     (last_ae == IRDMA_AE_LLP_CONNECTION_RESET))) {
3534                 issue_disconn = 1;
3535                 if (last_ae == IRDMA_AE_LLP_CONNECTION_RESET)
3536                         disconn_status = -ECONNRESET;
3537         }
3538
3539         if (original_hw_tcp_state == IRDMA_TCP_STATE_CLOSED ||
3540             original_hw_tcp_state == IRDMA_TCP_STATE_TIME_WAIT ||
3541             last_ae == IRDMA_AE_RDMAP_ROE_BAD_LLP_CLOSE ||
3542             last_ae == IRDMA_AE_BAD_CLOSE ||
3543             last_ae == IRDMA_AE_LLP_CONNECTION_RESET || iwdev->rf->reset || !cm_id) {
3544                 issue_close = 1;
3545                 iwqp->cm_id = NULL;
3546                 qp->term_flags = 0;
3547                 if (!iwqp->flush_issued) {
3548                         iwqp->flush_issued = 1;
3549                         issue_flush = 1;
3550                 }
3551         }
3552
3553         spin_unlock_irqrestore(&iwqp->lock, flags);
3554         if (issue_flush && !iwqp->sc_qp.qp_uk.destroy_pending) {
3555                 irdma_flush_wqes(iwqp, IRDMA_FLUSH_SQ | IRDMA_FLUSH_RQ |
3556                                  IRDMA_FLUSH_WAIT);
3557
3558                 if (qp->term_flags)
3559                         irdma_ib_qp_event(iwqp, qp->event_type);
3560         }
3561
3562         if (!cm_id || !cm_id->event_handler)
3563                 return;
3564
3565         spin_lock_irqsave(&iwdev->cm_core.ht_lock, flags);
3566         if (!iwqp->cm_node) {
3567                 spin_unlock_irqrestore(&iwdev->cm_core.ht_lock, flags);
3568                 return;
3569         }
3570         refcount_inc(&iwqp->cm_node->refcnt);
3571
3572         spin_unlock_irqrestore(&iwdev->cm_core.ht_lock, flags);
3573
3574         if (issue_disconn) {
3575                 err = irdma_send_cm_event(iwqp->cm_node, cm_id,
3576                                           IW_CM_EVENT_DISCONNECT,
3577                                           disconn_status);
3578                 if (err)
3579                         ibdev_dbg(&iwdev->ibdev,
3580                                   "CM: disconnect event failed: - cm_id = %p\n",
3581                                   cm_id);
3582         }
3583         if (issue_close) {
3584                 cm_id->provider_data = iwqp;
3585                 err = irdma_send_cm_event(iwqp->cm_node, cm_id,
3586                                           IW_CM_EVENT_CLOSE, 0);
3587                 if (err)
3588                         ibdev_dbg(&iwdev->ibdev,
3589                                   "CM: close event failed: - cm_id = %p\n",
3590                                   cm_id);
3591                 irdma_qp_disconnect(iwqp);
3592         }
3593         irdma_rem_ref_cm_node(iwqp->cm_node);
3594 }
3595
3596 /**
3597  * irdma_disconnect_worker - worker for connection close
3598  * @work: points or disconn structure
3599  */
3600 static void irdma_disconnect_worker(struct work_struct *work)
3601 {
3602         struct disconn_work *dwork = container_of(work, struct disconn_work, work);
3603         struct irdma_qp *iwqp = dwork->iwqp;
3604
3605         kfree(dwork);
3606         irdma_cm_disconn_true(iwqp);
3607         irdma_qp_rem_ref(&iwqp->ibqp);
3608 }
3609
3610 /**
3611  * irdma_free_lsmm_rsrc - free lsmm memory and deregister
3612  * @iwqp: associate qp for the connection
3613  */
3614 void irdma_free_lsmm_rsrc(struct irdma_qp *iwqp)
3615 {
3616         struct irdma_device *iwdev;
3617
3618         iwdev = iwqp->iwdev;
3619
3620         if (iwqp->ietf_mem.va) {
3621                 if (iwqp->lsmm_mr)
3622                         iwdev->ibdev.ops.dereg_mr(iwqp->lsmm_mr, NULL);
3623                 dma_free_coherent(iwdev->rf->sc_dev.hw->device,
3624                                   iwqp->ietf_mem.size, iwqp->ietf_mem.va,
3625                                   iwqp->ietf_mem.pa);
3626                 iwqp->ietf_mem.va = NULL;
3627         }
3628 }
3629
3630 /**
3631  * irdma_accept - registered call for connection to be accepted
3632  * @cm_id: cm information for passive connection
3633  * @conn_param: accpet parameters
3634  */
3635 int irdma_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
3636 {
3637         struct ib_qp *ibqp;
3638         struct irdma_qp *iwqp;
3639         struct irdma_device *iwdev;
3640         struct irdma_sc_dev *dev;
3641         struct irdma_cm_node *cm_node;
3642         struct ib_qp_attr attr = {};
3643         int passive_state;
3644         struct ib_mr *ibmr;
3645         struct irdma_pd *iwpd;
3646         u16 buf_len = 0;
3647         struct irdma_kmem_info accept;
3648         u64 tagged_offset;
3649         int wait_ret;
3650         int ret = 0;
3651
3652         ibqp = irdma_get_qp(cm_id->device, conn_param->qpn);
3653         if (!ibqp)
3654                 return -EINVAL;
3655
3656         iwqp = to_iwqp(ibqp);
3657         iwdev = iwqp->iwdev;
3658         dev = &iwdev->rf->sc_dev;
3659         cm_node = cm_id->provider_data;
3660
3661         if (((struct sockaddr_in *)&cm_id->local_addr)->sin_family == AF_INET) {
3662                 cm_node->ipv4 = true;
3663                 cm_node->vlan_id = irdma_get_vlan_ipv4(cm_node->loc_addr);
3664         } else {
3665                 cm_node->ipv4 = false;
3666                 irdma_get_vlan_mac_ipv6(cm_node->loc_addr, &cm_node->vlan_id,
3667                                         NULL);
3668         }
3669         ibdev_dbg(&iwdev->ibdev, "CM: Accept vlan_id=%d\n",
3670                   cm_node->vlan_id);
3671
3672         trace_irdma_accept(cm_node, 0, NULL);
3673
3674         if (cm_node->state == IRDMA_CM_STATE_LISTENER_DESTROYED) {
3675                 ret = -EINVAL;
3676                 goto error;
3677         }
3678
3679         passive_state = atomic_add_return(1, &cm_node->passive_state);
3680         if (passive_state == IRDMA_SEND_RESET_EVENT) {
3681                 ret = -ECONNRESET;
3682                 goto error;
3683         }
3684
3685         buf_len = conn_param->private_data_len + IRDMA_MAX_IETF_SIZE;
3686         iwqp->ietf_mem.size = ALIGN(buf_len, 1);
3687         iwqp->ietf_mem.va = dma_alloc_coherent(dev->hw->device,
3688                                                iwqp->ietf_mem.size,
3689                                                &iwqp->ietf_mem.pa, GFP_KERNEL);
3690         if (!iwqp->ietf_mem.va) {
3691                 ret = -ENOMEM;
3692                 goto error;
3693         }
3694
3695         cm_node->pdata.size = conn_param->private_data_len;
3696         accept.addr = iwqp->ietf_mem.va;
3697         accept.size = irdma_cm_build_mpa_frame(cm_node, &accept, MPA_KEY_REPLY);
3698         memcpy((u8 *)accept.addr + accept.size, conn_param->private_data,
3699                conn_param->private_data_len);
3700
3701         if (cm_node->dev->ws_add(iwqp->sc_qp.vsi, cm_node->user_pri)) {
3702                 ret = -ENOMEM;
3703                 goto error;
3704         }
3705         iwqp->sc_qp.user_pri = cm_node->user_pri;
3706         irdma_qp_add_qos(&iwqp->sc_qp);
3707         /* setup our first outgoing iWarp send WQE (the IETF frame response) */
3708         iwpd = iwqp->iwpd;
3709         tagged_offset = (uintptr_t)iwqp->ietf_mem.va;
3710         ibmr = irdma_reg_phys_mr(&iwpd->ibpd, iwqp->ietf_mem.pa, buf_len,
3711                                  IB_ACCESS_LOCAL_WRITE, &tagged_offset);
3712         if (IS_ERR(ibmr)) {
3713                 ret = -ENOMEM;
3714                 goto error;
3715         }
3716
3717         ibmr->pd = &iwpd->ibpd;
3718         ibmr->device = iwpd->ibpd.device;
3719         iwqp->lsmm_mr = ibmr;
3720         if (iwqp->page)
3721                 iwqp->sc_qp.qp_uk.sq_base = kmap_local_page(iwqp->page);
3722
3723         cm_node->lsmm_size = accept.size + conn_param->private_data_len;
3724         irdma_sc_send_lsmm(&iwqp->sc_qp, iwqp->ietf_mem.va, cm_node->lsmm_size,
3725                            ibmr->lkey);
3726
3727         if (iwqp->page)
3728                 kunmap_local(iwqp->sc_qp.qp_uk.sq_base);
3729
3730         iwqp->cm_id = cm_id;
3731         cm_node->cm_id = cm_id;
3732
3733         cm_id->provider_data = iwqp;
3734         iwqp->active_conn = 0;
3735         iwqp->cm_node = cm_node;
3736         cm_node->iwqp = iwqp;
3737         irdma_cm_init_tsa_conn(iwqp, cm_node);
3738         irdma_qp_add_ref(&iwqp->ibqp);
3739         cm_id->add_ref(cm_id);
3740
3741         attr.qp_state = IB_QPS_RTS;
3742         cm_node->qhash_set = false;
3743         cm_node->cm_core->cm_free_ah(cm_node);
3744
3745         irdma_modify_qp(&iwqp->ibqp, &attr, IB_QP_STATE, NULL);
3746         if (dev->hw_attrs.uk_attrs.feature_flags & IRDMA_FEATURE_RTS_AE) {
3747                 wait_ret = wait_event_interruptible_timeout(iwqp->waitq,
3748                                                             iwqp->rts_ae_rcvd,
3749                                                             IRDMA_MAX_TIMEOUT);
3750                 if (!wait_ret) {
3751                         ibdev_dbg(&iwdev->ibdev,
3752                                   "CM: Slow Connection: cm_node=%p, loc_port=%d, rem_port=%d, cm_id=%p\n",
3753                                   cm_node, cm_node->loc_port,
3754                                   cm_node->rem_port, cm_node->cm_id);
3755                         ret = -ECONNRESET;
3756                         goto error;
3757                 }
3758         }
3759
3760         irdma_send_cm_event(cm_node, cm_id, IW_CM_EVENT_ESTABLISHED, 0);
3761         cm_node->accelerated = true;
3762         complete(&cm_node->establish_comp);
3763
3764         if (cm_node->accept_pend) {
3765                 atomic_dec(&cm_node->listener->pend_accepts_cnt);
3766                 cm_node->accept_pend = 0;
3767         }
3768
3769         ibdev_dbg(&iwdev->ibdev,
3770                   "CM: rem_port=0x%04x, loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4 cm_node=%p cm_id=%p qp_id = %d\n\n",
3771                   cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr,
3772                   cm_node->loc_addr, cm_node, cm_id, ibqp->qp_num);
3773         cm_node->cm_core->stats_accepts++;
3774
3775         return 0;
3776 error:
3777         irdma_free_lsmm_rsrc(iwqp);
3778         irdma_rem_ref_cm_node(cm_node);
3779
3780         return ret;
3781 }
3782
3783 /**
3784  * irdma_reject - registered call for connection to be rejected
3785  * @cm_id: cm information for passive connection
3786  * @pdata: private data to be sent
3787  * @pdata_len: private data length
3788  */
3789 int irdma_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
3790 {
3791         struct irdma_device *iwdev;
3792         struct irdma_cm_node *cm_node;
3793
3794         cm_node = cm_id->provider_data;
3795         cm_node->pdata.size = pdata_len;
3796
3797         trace_irdma_reject(cm_node, 0, NULL);
3798
3799         iwdev = to_iwdev(cm_id->device);
3800         if (!iwdev)
3801                 return -EINVAL;
3802
3803         cm_node->cm_core->stats_rejects++;
3804
3805         if (pdata_len + sizeof(struct ietf_mpa_v2) > IRDMA_MAX_CM_BUF)
3806                 return -EINVAL;
3807
3808         return irdma_cm_reject(cm_node, pdata, pdata_len);
3809 }
3810
3811 /**
3812  * irdma_connect - registered call for connection to be established
3813  * @cm_id: cm information for passive connection
3814  * @conn_param: Information about the connection
3815  */
3816 int irdma_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
3817 {
3818         struct ib_qp *ibqp;
3819         struct irdma_qp *iwqp;
3820         struct irdma_device *iwdev;
3821         struct irdma_cm_node *cm_node;
3822         struct irdma_cm_info cm_info;
3823         struct sockaddr_in *laddr;
3824         struct sockaddr_in *raddr;
3825         struct sockaddr_in6 *laddr6;
3826         struct sockaddr_in6 *raddr6;
3827         int ret = 0;
3828
3829         ibqp = irdma_get_qp(cm_id->device, conn_param->qpn);
3830         if (!ibqp)
3831                 return -EINVAL;
3832         iwqp = to_iwqp(ibqp);
3833         if (!iwqp)
3834                 return -EINVAL;
3835         iwdev = iwqp->iwdev;
3836         if (!iwdev)
3837                 return -EINVAL;
3838
3839         laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
3840         raddr = (struct sockaddr_in *)&cm_id->m_remote_addr;
3841         laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
3842         raddr6 = (struct sockaddr_in6 *)&cm_id->m_remote_addr;
3843
3844         if (!(laddr->sin_port) || !(raddr->sin_port))
3845                 return -EINVAL;
3846
3847         iwqp->active_conn = 1;
3848         iwqp->cm_id = NULL;
3849         cm_id->provider_data = iwqp;
3850
3851         /* set up the connection params for the node */
3852         if (cm_id->remote_addr.ss_family == AF_INET) {
3853                 if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV4)
3854                         return -EINVAL;
3855
3856                 cm_info.ipv4 = true;
3857                 memset(cm_info.loc_addr, 0, sizeof(cm_info.loc_addr));
3858                 memset(cm_info.rem_addr, 0, sizeof(cm_info.rem_addr));
3859                 cm_info.loc_addr[0] = ntohl(laddr->sin_addr.s_addr);
3860                 cm_info.rem_addr[0] = ntohl(raddr->sin_addr.s_addr);
3861                 cm_info.loc_port = ntohs(laddr->sin_port);
3862                 cm_info.rem_port = ntohs(raddr->sin_port);
3863                 cm_info.vlan_id = irdma_get_vlan_ipv4(cm_info.loc_addr);
3864         } else {
3865                 if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV6)
3866                         return -EINVAL;
3867
3868                 cm_info.ipv4 = false;
3869                 irdma_copy_ip_ntohl(cm_info.loc_addr,
3870                                     laddr6->sin6_addr.in6_u.u6_addr32);
3871                 irdma_copy_ip_ntohl(cm_info.rem_addr,
3872                                     raddr6->sin6_addr.in6_u.u6_addr32);
3873                 cm_info.loc_port = ntohs(laddr6->sin6_port);
3874                 cm_info.rem_port = ntohs(raddr6->sin6_port);
3875                 irdma_get_vlan_mac_ipv6(cm_info.loc_addr, &cm_info.vlan_id,
3876                                         NULL);
3877         }
3878         cm_info.cm_id = cm_id;
3879         cm_info.qh_qpid = iwdev->vsi.ilq->qp_id;
3880         cm_info.tos = cm_id->tos;
3881         if (iwdev->vsi.dscp_mode) {
3882                 cm_info.user_pri =
3883                         iwqp->sc_qp.vsi->dscp_map[irdma_tos2dscp(cm_info.tos)];
3884         } else {
3885                 cm_info.user_pri = rt_tos2priority(cm_id->tos);
3886                 cm_info.user_pri = irdma_iw_get_vlan_prio(cm_info.loc_addr,
3887                                                           cm_info.user_pri,
3888                                                           cm_info.ipv4);
3889         }
3890
3891         if (iwqp->sc_qp.dev->ws_add(iwqp->sc_qp.vsi, cm_info.user_pri))
3892                 return -ENOMEM;
3893         iwqp->sc_qp.user_pri = cm_info.user_pri;
3894         irdma_qp_add_qos(&iwqp->sc_qp);
3895         ibdev_dbg(&iwdev->ibdev, "DCB: TOS:[%d] UP:[%d]\n", cm_id->tos,
3896                   cm_info.user_pri);
3897
3898         trace_irdma_dcb_tos(iwdev, cm_id->tos, cm_info.user_pri);
3899
3900         ret = irdma_create_cm_node(&iwdev->cm_core, iwdev, conn_param, &cm_info,
3901                                    &cm_node);
3902         if (ret)
3903                 return ret;
3904         ret = cm_node->cm_core->cm_create_ah(cm_node, true);
3905         if (ret)
3906                 goto err;
3907         if (irdma_manage_qhash(iwdev, &cm_info,
3908                                IRDMA_QHASH_TYPE_TCP_ESTABLISHED,
3909                                IRDMA_QHASH_MANAGE_TYPE_ADD, NULL, true)) {
3910                 ret = -EINVAL;
3911                 goto err;
3912         }
3913         cm_node->qhash_set = true;
3914
3915         cm_node->apbvt_entry = irdma_add_apbvt(iwdev, cm_info.loc_port);
3916         if (!cm_node->apbvt_entry) {
3917                 ret = -EINVAL;
3918                 goto err;
3919         }
3920
3921         cm_node->apbvt_set = true;
3922         iwqp->cm_node = cm_node;
3923         cm_node->iwqp = iwqp;
3924         iwqp->cm_id = cm_id;
3925         irdma_qp_add_ref(&iwqp->ibqp);
3926         cm_id->add_ref(cm_id);
3927
3928         if (cm_node->state != IRDMA_CM_STATE_OFFLOADED) {
3929                 cm_node->state = IRDMA_CM_STATE_SYN_SENT;
3930                 ret = irdma_send_syn(cm_node, 0);
3931                 if (ret)
3932                         goto err;
3933         }
3934
3935         ibdev_dbg(&iwdev->ibdev,
3936                   "CM: rem_port=0x%04x, loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4 cm_node=%p cm_id=%p qp_id = %d\n\n",
3937                   cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr,
3938                   cm_node->loc_addr, cm_node, cm_id, ibqp->qp_num);
3939
3940         trace_irdma_connect(cm_node, 0, NULL);
3941
3942         return 0;
3943
3944 err:
3945         if (cm_info.ipv4)
3946                 ibdev_dbg(&iwdev->ibdev,
3947                           "CM: connect() FAILED: dest addr=%pI4",
3948                           cm_info.rem_addr);
3949         else
3950                 ibdev_dbg(&iwdev->ibdev,
3951                           "CM: connect() FAILED: dest addr=%pI6",
3952                           cm_info.rem_addr);
3953         irdma_rem_ref_cm_node(cm_node);
3954         iwdev->cm_core.stats_connect_errs++;
3955
3956         return ret;
3957 }
3958
3959 /**
3960  * irdma_create_listen - registered call creating listener
3961  * @cm_id: cm information for passive connection
3962  * @backlog: to max accept pending count
3963  */
3964 int irdma_create_listen(struct iw_cm_id *cm_id, int backlog)
3965 {
3966         struct irdma_device *iwdev;
3967         struct irdma_cm_listener *cm_listen_node;
3968         struct irdma_cm_info cm_info = {};
3969         struct sockaddr_in *laddr;
3970         struct sockaddr_in6 *laddr6;
3971         bool wildcard = false;
3972         int err;
3973
3974         iwdev = to_iwdev(cm_id->device);
3975         if (!iwdev)
3976                 return -EINVAL;
3977
3978         laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
3979         laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
3980         cm_info.qh_qpid = iwdev->vsi.ilq->qp_id;
3981
3982         if (laddr->sin_family == AF_INET) {
3983                 if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV4)
3984                         return -EINVAL;
3985
3986                 cm_info.ipv4 = true;
3987                 cm_info.loc_addr[0] = ntohl(laddr->sin_addr.s_addr);
3988                 cm_info.loc_port = ntohs(laddr->sin_port);
3989
3990                 if (laddr->sin_addr.s_addr != htonl(INADDR_ANY)) {
3991                         cm_info.vlan_id = irdma_get_vlan_ipv4(cm_info.loc_addr);
3992                 } else {
3993                         cm_info.vlan_id = 0xFFFF;
3994                         wildcard = true;
3995                 }
3996         } else {
3997                 if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV6)
3998                         return -EINVAL;
3999
4000                 cm_info.ipv4 = false;
4001                 irdma_copy_ip_ntohl(cm_info.loc_addr,
4002                                     laddr6->sin6_addr.in6_u.u6_addr32);
4003                 cm_info.loc_port = ntohs(laddr6->sin6_port);
4004                 if (ipv6_addr_type(&laddr6->sin6_addr) != IPV6_ADDR_ANY) {
4005                         irdma_get_vlan_mac_ipv6(cm_info.loc_addr,
4006                                                 &cm_info.vlan_id, NULL);
4007                 } else {
4008                         cm_info.vlan_id = 0xFFFF;
4009                         wildcard = true;
4010                 }
4011         }
4012
4013         if (cm_info.vlan_id >= VLAN_N_VID && iwdev->dcb_vlan_mode)
4014                 cm_info.vlan_id = 0;
4015         cm_info.backlog = backlog;
4016         cm_info.cm_id = cm_id;
4017
4018         trace_irdma_create_listen(iwdev, &cm_info);
4019
4020         cm_listen_node = irdma_make_listen_node(&iwdev->cm_core, iwdev,
4021                                                 &cm_info);
4022         if (!cm_listen_node) {
4023                 ibdev_dbg(&iwdev->ibdev,
4024                           "CM: cm_listen_node == NULL\n");
4025                 return -ENOMEM;
4026         }
4027
4028         cm_id->provider_data = cm_listen_node;
4029
4030         cm_listen_node->tos = cm_id->tos;
4031         if (iwdev->vsi.dscp_mode)
4032                 cm_listen_node->user_pri =
4033                 iwdev->vsi.dscp_map[irdma_tos2dscp(cm_id->tos)];
4034         else
4035                 cm_listen_node->user_pri = rt_tos2priority(cm_id->tos);
4036         cm_info.user_pri = cm_listen_node->user_pri;
4037         if (!cm_listen_node->reused_node) {
4038                 if (wildcard) {
4039                         err = irdma_add_mqh(iwdev, &cm_info, cm_listen_node);
4040                         if (err)
4041                                 goto error;
4042                 } else {
4043                         if (!iwdev->vsi.dscp_mode)
4044                                 cm_listen_node->user_pri =
4045                                 irdma_iw_get_vlan_prio(cm_info.loc_addr,
4046                                                        cm_info.user_pri,
4047                                                        cm_info.ipv4);
4048                         cm_info.user_pri = cm_listen_node->user_pri;
4049                         err = irdma_manage_qhash(iwdev, &cm_info,
4050                                                  IRDMA_QHASH_TYPE_TCP_SYN,
4051                                                  IRDMA_QHASH_MANAGE_TYPE_ADD,
4052                                                  NULL, true);
4053                         if (err)
4054                                 goto error;
4055
4056                         cm_listen_node->qhash_set = true;
4057                 }
4058
4059                 cm_listen_node->apbvt_entry = irdma_add_apbvt(iwdev,
4060                                                               cm_info.loc_port);
4061                 if (!cm_listen_node->apbvt_entry)
4062                         goto error;
4063         }
4064         cm_id->add_ref(cm_id);
4065         cm_listen_node->cm_core->stats_listen_created++;
4066         ibdev_dbg(&iwdev->ibdev,
4067                   "CM: loc_port=0x%04x loc_addr=%pI4 cm_listen_node=%p cm_id=%p qhash_set=%d vlan_id=%d\n",
4068                   cm_listen_node->loc_port, cm_listen_node->loc_addr,
4069                   cm_listen_node, cm_listen_node->cm_id,
4070                   cm_listen_node->qhash_set, cm_listen_node->vlan_id);
4071
4072         return 0;
4073
4074 error:
4075
4076         irdma_cm_del_listen(&iwdev->cm_core, cm_listen_node, false);
4077
4078         return -EINVAL;
4079 }
4080
4081 /**
4082  * irdma_destroy_listen - registered call to destroy listener
4083  * @cm_id: cm information for passive connection
4084  */
4085 int irdma_destroy_listen(struct iw_cm_id *cm_id)
4086 {
4087         struct irdma_device *iwdev;
4088
4089         iwdev = to_iwdev(cm_id->device);
4090         if (cm_id->provider_data)
4091                 irdma_cm_del_listen(&iwdev->cm_core, cm_id->provider_data,
4092                                     true);
4093         else
4094                 ibdev_dbg(&iwdev->ibdev,
4095                           "CM: cm_id->provider_data was NULL\n");
4096
4097         cm_id->rem_ref(cm_id);
4098
4099         return 0;
4100 }
4101
4102 /**
4103  * irdma_teardown_list_prep - add conn nodes slated for tear down to list
4104  * @cm_core: cm's core
4105  * @teardown_list: a list to which cm_node will be selected
4106  * @ipaddr: pointer to ip address
4107  * @nfo: pointer to cm_info structure instance
4108  * @disconnect_all: flag indicating disconnect all QPs
4109  */
4110 static void irdma_teardown_list_prep(struct irdma_cm_core *cm_core,
4111                                      struct list_head *teardown_list,
4112                                      u32 *ipaddr,
4113                                      struct irdma_cm_info *nfo,
4114                                      bool disconnect_all)
4115 {
4116         struct irdma_cm_node *cm_node;
4117         int bkt;
4118
4119         hash_for_each_rcu(cm_core->cm_hash_tbl, bkt, cm_node, list) {
4120                 if ((disconnect_all ||
4121                      (nfo->vlan_id == cm_node->vlan_id &&
4122                       !memcmp(cm_node->loc_addr, ipaddr, nfo->ipv4 ? 4 : 16))) &&
4123                     refcount_inc_not_zero(&cm_node->refcnt))
4124                         list_add(&cm_node->teardown_entry, teardown_list);
4125         }
4126 }
4127
4128 /**
4129  * irdma_cm_event_connected - handle connected active node
4130  * @event: the info for cm_node of connection
4131  */
4132 static void irdma_cm_event_connected(struct irdma_cm_event *event)
4133 {
4134         struct irdma_qp *iwqp;
4135         struct irdma_device *iwdev;
4136         struct irdma_cm_node *cm_node;
4137         struct irdma_sc_dev *dev;
4138         struct ib_qp_attr attr = {};
4139         struct iw_cm_id *cm_id;
4140         int status;
4141         bool read0;
4142         int wait_ret = 0;
4143
4144         cm_node = event->cm_node;
4145         cm_id = cm_node->cm_id;
4146         iwqp = cm_id->provider_data;
4147         iwdev = iwqp->iwdev;
4148         dev = &iwdev->rf->sc_dev;
4149         if (iwqp->sc_qp.qp_uk.destroy_pending) {
4150                 status = -ETIMEDOUT;
4151                 goto error;
4152         }
4153
4154         irdma_cm_init_tsa_conn(iwqp, cm_node);
4155         read0 = (cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO);
4156         if (iwqp->page)
4157                 iwqp->sc_qp.qp_uk.sq_base = kmap_local_page(iwqp->page);
4158         irdma_sc_send_rtt(&iwqp->sc_qp, read0);
4159         if (iwqp->page)
4160                 kunmap_local(iwqp->sc_qp.qp_uk.sq_base);
4161
4162         attr.qp_state = IB_QPS_RTS;
4163         cm_node->qhash_set = false;
4164         irdma_modify_qp(&iwqp->ibqp, &attr, IB_QP_STATE, NULL);
4165         if (dev->hw_attrs.uk_attrs.feature_flags & IRDMA_FEATURE_RTS_AE) {
4166                 wait_ret = wait_event_interruptible_timeout(iwqp->waitq,
4167                                                             iwqp->rts_ae_rcvd,
4168                                                             IRDMA_MAX_TIMEOUT);
4169                 if (!wait_ret)
4170                         ibdev_dbg(&iwdev->ibdev,
4171                                   "CM: Slow Connection: cm_node=%p, loc_port=%d, rem_port=%d, cm_id=%p\n",
4172                                   cm_node, cm_node->loc_port,
4173                                   cm_node->rem_port, cm_node->cm_id);
4174         }
4175
4176         irdma_send_cm_event(cm_node, cm_id, IW_CM_EVENT_CONNECT_REPLY, 0);
4177         cm_node->accelerated = true;
4178         complete(&cm_node->establish_comp);
4179         cm_node->cm_core->cm_free_ah(cm_node);
4180         return;
4181
4182 error:
4183         iwqp->cm_id = NULL;
4184         cm_id->provider_data = NULL;
4185         irdma_send_cm_event(event->cm_node, cm_id, IW_CM_EVENT_CONNECT_REPLY,
4186                             status);
4187         irdma_rem_ref_cm_node(event->cm_node);
4188 }
4189
4190 /**
4191  * irdma_cm_event_reset - handle reset
4192  * @event: the info for cm_node of connection
4193  */
4194 static void irdma_cm_event_reset(struct irdma_cm_event *event)
4195 {
4196         struct irdma_cm_node *cm_node = event->cm_node;
4197         struct iw_cm_id *cm_id = cm_node->cm_id;
4198         struct irdma_qp *iwqp;
4199
4200         if (!cm_id)
4201                 return;
4202
4203         iwqp = cm_id->provider_data;
4204         if (!iwqp)
4205                 return;
4206
4207         ibdev_dbg(&cm_node->iwdev->ibdev,
4208                   "CM: reset event %p - cm_id = %p\n", event->cm_node, cm_id);
4209         iwqp->cm_id = NULL;
4210
4211         irdma_send_cm_event(cm_node, cm_node->cm_id, IW_CM_EVENT_DISCONNECT,
4212                             -ECONNRESET);
4213         irdma_send_cm_event(cm_node, cm_node->cm_id, IW_CM_EVENT_CLOSE, 0);
4214 }
4215
4216 /**
4217  * irdma_cm_event_handler - send event to cm upper layer
4218  * @work: pointer of cm event info.
4219  */
4220 static void irdma_cm_event_handler(struct work_struct *work)
4221 {
4222         struct irdma_cm_event *event = container_of(work, struct irdma_cm_event, event_work);
4223         struct irdma_cm_node *cm_node;
4224
4225         if (!event || !event->cm_node || !event->cm_node->cm_core)
4226                 return;
4227
4228         cm_node = event->cm_node;
4229         trace_irdma_cm_event_handler(cm_node, event->type, NULL);
4230
4231         switch (event->type) {
4232         case IRDMA_CM_EVENT_MPA_REQ:
4233                 irdma_send_cm_event(cm_node, cm_node->cm_id,
4234                                     IW_CM_EVENT_CONNECT_REQUEST, 0);
4235                 break;
4236         case IRDMA_CM_EVENT_RESET:
4237                 irdma_cm_event_reset(event);
4238                 break;
4239         case IRDMA_CM_EVENT_CONNECTED:
4240                 if (!event->cm_node->cm_id ||
4241                     event->cm_node->state != IRDMA_CM_STATE_OFFLOADED)
4242                         break;
4243                 irdma_cm_event_connected(event);
4244                 break;
4245         case IRDMA_CM_EVENT_MPA_REJECT:
4246                 if (!event->cm_node->cm_id ||
4247                     cm_node->state == IRDMA_CM_STATE_OFFLOADED)
4248                         break;
4249                 irdma_send_cm_event(cm_node, cm_node->cm_id,
4250                                     IW_CM_EVENT_CONNECT_REPLY, -ECONNREFUSED);
4251                 break;
4252         case IRDMA_CM_EVENT_ABORTED:
4253                 if (!event->cm_node->cm_id ||
4254                     event->cm_node->state == IRDMA_CM_STATE_OFFLOADED)
4255                         break;
4256                 irdma_event_connect_error(event);
4257                 break;
4258         default:
4259                 ibdev_dbg(&cm_node->iwdev->ibdev,
4260                           "CM: bad event type = %d\n", event->type);
4261                 break;
4262         }
4263
4264         irdma_rem_ref_cm_node(event->cm_node);
4265         kfree(event);
4266 }
4267
4268 /**
4269  * irdma_cm_post_event - queue event request for worker thread
4270  * @event: cm node's info for up event call
4271  */
4272 static void irdma_cm_post_event(struct irdma_cm_event *event)
4273 {
4274         refcount_inc(&event->cm_node->refcnt);
4275         INIT_WORK(&event->event_work, irdma_cm_event_handler);
4276         queue_work(event->cm_node->cm_core->event_wq, &event->event_work);
4277 }
4278
4279 /**
4280  * irdma_cm_teardown_connections - teardown QPs
4281  * @iwdev: device pointer
4282  * @ipaddr: Pointer to IPv4 or IPv6 address
4283  * @nfo: Connection info
4284  * @disconnect_all: flag indicating disconnect all QPs
4285  *
4286  * teardown QPs where source or destination addr matches ip addr
4287  */
4288 void irdma_cm_teardown_connections(struct irdma_device *iwdev, u32 *ipaddr,
4289                                    struct irdma_cm_info *nfo,
4290                                    bool disconnect_all)
4291 {
4292         struct irdma_cm_core *cm_core = &iwdev->cm_core;
4293         struct list_head *list_core_temp;
4294         struct list_head *list_node;
4295         struct irdma_cm_node *cm_node;
4296         struct list_head teardown_list;
4297         struct ib_qp_attr attr;
4298
4299         INIT_LIST_HEAD(&teardown_list);
4300
4301         rcu_read_lock();
4302         irdma_teardown_list_prep(cm_core, &teardown_list, ipaddr, nfo, disconnect_all);
4303         rcu_read_unlock();
4304
4305         list_for_each_safe (list_node, list_core_temp, &teardown_list) {
4306                 cm_node = container_of(list_node, struct irdma_cm_node,
4307                                        teardown_entry);
4308                 attr.qp_state = IB_QPS_ERR;
4309                 irdma_modify_qp(&cm_node->iwqp->ibqp, &attr, IB_QP_STATE, NULL);
4310                 if (iwdev->rf->reset)
4311                         irdma_cm_disconn(cm_node->iwqp);
4312                 irdma_rem_ref_cm_node(cm_node);
4313         }
4314 }
4315
4316 /**
4317  * irdma_qhash_ctrl - enable/disable qhash for list
4318  * @iwdev: device pointer
4319  * @parent_listen_node: parent listen node
4320  * @nfo: cm info node
4321  * @ipaddr: Pointer to IPv4 or IPv6 address
4322  * @ipv4: flag indicating IPv4 when true
4323  * @ifup: flag indicating interface up when true
4324  *
4325  * Enables or disables the qhash for the node in the child
4326  * listen list that matches ipaddr. If no matching IP was found
4327  * it will allocate and add a new child listen node to the
4328  * parent listen node. The listen_list_lock is assumed to be
4329  * held when called.
4330  */
4331 static void irdma_qhash_ctrl(struct irdma_device *iwdev,
4332                              struct irdma_cm_listener *parent_listen_node,
4333                              struct irdma_cm_info *nfo, u32 *ipaddr, bool ipv4,
4334                              bool ifup)
4335 {
4336         struct list_head *child_listen_list = &parent_listen_node->child_listen_list;
4337         struct irdma_cm_listener *child_listen_node;
4338         struct list_head *pos, *tpos;
4339         bool node_allocated = false;
4340         enum irdma_quad_hash_manage_type op = ifup ?
4341                                               IRDMA_QHASH_MANAGE_TYPE_ADD :
4342                                               IRDMA_QHASH_MANAGE_TYPE_DELETE;
4343         int err;
4344
4345         list_for_each_safe (pos, tpos, child_listen_list) {
4346                 child_listen_node = list_entry(pos, struct irdma_cm_listener,
4347                                                child_listen_list);
4348                 if (!memcmp(child_listen_node->loc_addr, ipaddr, ipv4 ? 4 : 16))
4349                         goto set_qhash;
4350         }
4351
4352         /* if not found then add a child listener if interface is going up */
4353         if (!ifup)
4354                 return;
4355         child_listen_node = kmemdup(parent_listen_node,
4356                                     sizeof(*child_listen_node), GFP_ATOMIC);
4357         if (!child_listen_node)
4358                 return;
4359
4360         node_allocated = true;
4361         memcpy(child_listen_node->loc_addr, ipaddr, ipv4 ? 4 : 16);
4362
4363 set_qhash:
4364         memcpy(nfo->loc_addr, child_listen_node->loc_addr,
4365                sizeof(nfo->loc_addr));
4366         nfo->vlan_id = child_listen_node->vlan_id;
4367         err = irdma_manage_qhash(iwdev, nfo, IRDMA_QHASH_TYPE_TCP_SYN, op, NULL,
4368                                  false);
4369         if (!err) {
4370                 child_listen_node->qhash_set = ifup;
4371                 if (node_allocated)
4372                         list_add(&child_listen_node->child_listen_list,
4373                                  &parent_listen_node->child_listen_list);
4374         } else if (node_allocated) {
4375                 kfree(child_listen_node);
4376         }
4377 }
4378
4379 /**
4380  * irdma_if_notify - process an ifdown on an interface
4381  * @iwdev: device pointer
4382  * @netdev: network device structure
4383  * @ipaddr: Pointer to IPv4 or IPv6 address
4384  * @ipv4: flag indicating IPv4 when true
4385  * @ifup: flag indicating interface up when true
4386  */
4387 void irdma_if_notify(struct irdma_device *iwdev, struct net_device *netdev,
4388                      u32 *ipaddr, bool ipv4, bool ifup)
4389 {
4390         struct irdma_cm_core *cm_core = &iwdev->cm_core;
4391         unsigned long flags;
4392         struct irdma_cm_listener *listen_node;
4393         static const u32 ip_zero[4] = { 0, 0, 0, 0 };
4394         struct irdma_cm_info nfo = {};
4395         u16 vlan_id = rdma_vlan_dev_vlan_id(netdev);
4396         enum irdma_quad_hash_manage_type op = ifup ?
4397                                               IRDMA_QHASH_MANAGE_TYPE_ADD :
4398                                               IRDMA_QHASH_MANAGE_TYPE_DELETE;
4399
4400         nfo.vlan_id = vlan_id;
4401         nfo.ipv4 = ipv4;
4402         nfo.qh_qpid = 1;
4403
4404         /* Disable or enable qhash for listeners */
4405         spin_lock_irqsave(&cm_core->listen_list_lock, flags);
4406         list_for_each_entry (listen_node, &cm_core->listen_list, list) {
4407                 if (vlan_id != listen_node->vlan_id ||
4408                     (memcmp(listen_node->loc_addr, ipaddr, ipv4 ? 4 : 16) &&
4409                      memcmp(listen_node->loc_addr, ip_zero, ipv4 ? 4 : 16)))
4410                         continue;
4411
4412                 memcpy(nfo.loc_addr, listen_node->loc_addr,
4413                        sizeof(nfo.loc_addr));
4414                 nfo.loc_port = listen_node->loc_port;
4415                 nfo.user_pri = listen_node->user_pri;
4416                 if (!list_empty(&listen_node->child_listen_list)) {
4417                         irdma_qhash_ctrl(iwdev, listen_node, &nfo, ipaddr, ipv4,
4418                                          ifup);
4419                 } else if (memcmp(listen_node->loc_addr, ip_zero,
4420                                   ipv4 ? 4 : 16)) {
4421                         if (!irdma_manage_qhash(iwdev, &nfo,
4422                                                 IRDMA_QHASH_TYPE_TCP_SYN, op,
4423                                                 NULL, false))
4424                                 listen_node->qhash_set = ifup;
4425                 }
4426         }
4427         spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
4428
4429         /* disconnect any connected qp's on ifdown */
4430         if (!ifup)
4431                 irdma_cm_teardown_connections(iwdev, ipaddr, &nfo, false);
4432 }