Lines Matching defs:cm_node
112 static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb);
113 static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb);
121 static void free_retrans_entry(struct nes_cm_node *cm_node);
122 static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph,
131 static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node);
166 static struct nes_cm_event *create_event(struct nes_cm_node *cm_node,
171 if (!cm_node->cm_id)
181 event->cm_node = cm_node;
182 event->cm_info.rem_addr = cm_node->rem_addr;
183 event->cm_info.loc_addr = cm_node->loc_addr;
184 event->cm_info.rem_port = cm_node->rem_port;
185 event->cm_info.loc_port = cm_node->loc_port;
186 event->cm_info.cm_id = cm_node->cm_id;
188 nes_debug(NES_DBG_CM, "cm_node=%p Created event=%p, type=%u, "
190 cm_node, event, type, event->cm_info.loc_addr,
202 static int send_mpa_request(struct nes_cm_node *cm_node, struct sk_buff *skb)
210 form_cm_frame(skb, cm_node, NULL, 0, &cm_node->mpa_frame,
211 cm_node->mpa_frame_size, SET_ACK);
213 return schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0);
218 static int send_mpa_reject(struct nes_cm_node *cm_node)
229 form_cm_frame(skb, cm_node, NULL, 0, &cm_node->mpa_frame,
230 cm_node->mpa_frame_size, SET_ACK | SET_FIN);
232 cm_node->state = NES_CM_STATE_FIN_WAIT1;
233 return schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0);
241 static int parse_mpa(struct nes_cm_node *cm_node, u8 *buffer, u32 *type,
255 cm_node->mpa_frame_size = ntohs(mpa_frame->priv_data_len);
257 if (cm_node->mpa_frame_size > IETF_MAX_PRIV_DATA_LEN) {
272 if (cm_node->state != NES_CM_STATE_MPAREQ_SENT) {
284 if (cm_node->mpa_frame_size + sizeof(struct ietf_mpa_frame) != len) {
287 cm_node->mpa_frame_size,
295 cm_node->mpa_frame_size,
300 /* copy entire MPA frame to our cm_node's frame */
301 memcpy(cm_node->mpa_frame_buf, buffer + sizeof(struct ietf_mpa_frame),
302 cm_node->mpa_frame_size);
315 struct nes_cm_node *cm_node, void *options, u32 optionsize,
348 memcpy(ethh->h_dest, cm_node->rem_mac, ETH_ALEN);
349 memcpy(ethh->h_source, cm_node->loc_mac, ETH_ALEN);
356 iph->id = htons(++cm_node->tcp_cntxt.loc_id);
362 iph->saddr = htonl(cm_node->loc_addr);
363 iph->daddr = htonl(cm_node->rem_addr);
365 tcph->source = htons(cm_node->loc_port);
366 tcph->dest = htons(cm_node->rem_port);
367 tcph->seq = htonl(cm_node->tcp_cntxt.loc_seq_num);
370 cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt;
371 tcph->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num);
377 cm_node->tcp_cntxt.loc_seq_num++;
380 cm_node->tcp_cntxt.loc_seq_num += datasize;
383 cm_node->tcp_cntxt.loc_seq_num++;
391 tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd);
429 * note - cm_node needs to be protected before calling this. Encase in:
430 * rem_ref_cm_node(cm_core, cm_node);add_ref_cm_node(cm_node);
432 int schedule_nes_timer(struct nes_cm_node *cm_node, struct sk_buff *skb,
437 struct nes_cm_core *cm_core = cm_node->cm_core;
452 new_send->netdev = cm_node->netdev;
458 if (cm_node->recv_entry) {
463 cm_node->recv_entry = new_send;
469 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
470 cm_node->send_entry = new_send;
471 add_ref_cm_node(cm_node);
472 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
475 ret = nes_nic_cm_xmit(new_send->skb, cm_node->netdev);
484 cleanup_retrans_entry(cm_node);
486 rem_ref_cm_node(cm_core, cm_node);
502 static void nes_retrans_expired(struct nes_cm_node *cm_node)
504 struct iw_cm_id *cm_id = cm_node->cm_id;
505 enum nes_cm_node_state state = cm_node->state;
506 cm_node->state = NES_CM_STATE_CLOSED;
510 rem_ref_cm_node(cm_node->cm_core, cm_node);
514 if (cm_node->cm_id)
516 send_reset(cm_node, NULL);
519 add_ref_cm_node(cm_node);
520 send_reset(cm_node, NULL);
521 create_event(cm_node, NES_CM_EVENT_ABORTED);
525 static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node)
527 struct nes_timer_entry *recv_entry = cm_node->recv_entry;
528 struct iw_cm_id *cm_id = cm_node->cm_id;
558 rem_ref_cm_node(cm_node->cm_core, cm_node);
560 if (cm_node->cm_id)
563 cm_node->recv_entry = NULL;
573 struct nes_cm_node *cm_node;
588 cm_node = container_of(list_node, struct nes_cm_node, list);
589 if ((cm_node->recv_entry) || (cm_node->send_entry)) {
590 add_ref_cm_node(cm_node);
591 list_add(&cm_node->timer_entry, &timer_list);
597 cm_node = container_of(list_node, struct nes_cm_node,
599 recv_entry = cm_node->recv_entry;
609 handle_recv_entry(cm_node, 1);
612 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
614 send_entry = cm_node->send_entry;
618 if (cm_node->state != NES_CM_STATE_TSA) {
627 free_retrans_entry(cm_node);
632 if ((cm_node->state == NES_CM_STATE_TSA) ||
633 (cm_node->state == NES_CM_STATE_CLOSED)) {
634 free_retrans_entry(cm_node);
641 free_retrans_entry(cm_node);
644 &cm_node->retrans_list_lock, flags);
645 nes_retrans_expired(cm_node);
646 cm_node->state = NES_CM_STATE_CLOSED;
647 spin_lock_irqsave(&cm_node->retrans_list_lock,
656 "0x%08X, cm_node->tcp_cntxt.rem_ack_num = "
657 "0x%08X\n", send_entry, cm_node, jiffies,
661 cm_node->tcp_cntxt.rem_ack_num);
663 spin_unlock_irqrestore(&cm_node->retrans_list_lock,
665 ret = nes_nic_cm_xmit(send_entry->skb, cm_node->netdev);
666 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
669 "node=%p\n", cm_node);
698 nes_debug(NES_DBG_CM, "cm_node=%p state=%d\n",
699 cm_node, cm_node->state);
700 free_retrans_entry(cm_node);
702 rem_ref_cm_node(cm_node->cm_core,
703 cm_node);
707 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
708 rem_ref_cm_node(cm_node->cm_core, cm_node);
723 static int send_syn(struct nes_cm_node *cm_node, u32 sendack,
736 if (!cm_node)
742 options->as_mss.mss = htons(cm_node->tcp_cntxt.mss);
748 options->as_windowscale.shiftcount = cm_node->tcp_cntxt.rcv_wscale;
779 form_cm_frame(skb, cm_node, optionsbuffer, optionssize, NULL, 0, flags);
780 ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0);
789 static int send_reset(struct nes_cm_node *cm_node, struct sk_buff *skb)
801 form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, flags);
802 ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 1);
811 static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb)
823 form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, SET_ACK);
824 ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 0);
833 static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb)
846 form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, SET_ACK | SET_FIN);
847 ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0);
861 struct nes_cm_node *cm_node;
866 /* walk list and find cm_node associated with this session ID */
868 list_for_each_entry(cm_node, hte, list) {
871 cm_node->loc_addr, cm_node->loc_port,
873 cm_node->rem_addr, cm_node->rem_port,
875 if ((cm_node->loc_addr == loc_addr) && (cm_node->loc_port == loc_port) &&
876 (cm_node->rem_addr == rem_addr) && (cm_node->rem_port == rem_port)) {
877 add_ref_cm_node(cm_node);
879 return cm_node;
898 /* walk list and find cm_node associated with this session ID */
921 static int add_hte_node(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node)
926 if (!cm_node || !cm_core)
930 cm_node);
936 list_add_tail(&cm_node->list, hte);
956 struct nes_cm_node *cm_node = NULL;
968 cm_node = container_of(list_pos, struct nes_cm_node,
970 if ((cm_node->listener == listener) &&
971 (!cm_node->accelerated)) {
972 add_ref_cm_node(cm_node);
973 list_add(&cm_node->reset_entry, &reset_list);
980 cm_node = container_of(list_pos, struct nes_cm_node,
983 struct nes_cm_node *loopback = cm_node->loopbackpartner;
985 if (NES_CM_STATE_FIN_WAIT1 <= cm_node->state) {
986 rem_ref_cm_node(cm_node->cm_core, cm_node);
989 cleanup_retrans_entry(cm_node);
990 err = send_reset(cm_node, NULL);
992 cm_node->state =
996 old_state = cm_node->state;
997 cm_node->state = NES_CM_STATE_LISTENER_DESTROYED;
1000 cm_node->cm_core,
1001 cm_node);
1006 event.cm_node = loopback;
1019 cm_node->state = NES_CM_STATE_LISTENER_DESTROYED;
1021 rem_ref_cm_node(cm_node->cm_core,
1022 cm_node);
1079 struct nes_cm_node *cm_node)
1082 cm_node->accelerated = 1;
1084 if (cm_node->accept_pend) {
1085 BUG_ON(!cm_node->listener);
1086 atomic_dec(&cm_node->listener->pend_accepts_cnt);
1087 cm_node->accept_pend = 0;
1088 BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0);
1163 struct nes_cm_node *cm_node;
1170 /* create an hte and cm_node for this instance */
1171 cm_node = kzalloc(sizeof(*cm_node), GFP_ATOMIC);
1172 if (!cm_node)
1176 cm_node->loc_addr = cm_info->loc_addr;
1177 cm_node->rem_addr = cm_info->rem_addr;
1178 cm_node->loc_port = cm_info->loc_port;
1179 cm_node->rem_port = cm_info->rem_port;
1180 cm_node->send_write0 = send_first;
1182 &cm_node->loc_addr, cm_node->loc_port,
1183 &cm_node->rem_addr, cm_node->rem_port);
1184 cm_node->listener = listener;
1185 cm_node->netdev = nesvnic->netdev;
1186 cm_node->cm_id = cm_info->cm_id;
1187 memcpy(cm_node->loc_mac, nesvnic->netdev->dev_addr, ETH_ALEN);
1189 nes_debug(NES_DBG_CM, "listener=%p, cm_id=%p\n", cm_node->listener,
1190 cm_node->cm_id);
1192 spin_lock_init(&cm_node->retrans_list_lock);
1194 cm_node->loopbackpartner = NULL;
1195 atomic_set(&cm_node->ref_count, 1);
1197 cm_node->cm_core = cm_core;
1198 cm_node->tcp_cntxt.loc_id = NES_CM_DEF_LOCAL_ID;
1199 cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE;
1200 cm_node->tcp_cntxt.rcv_wnd = NES_CM_DEFAULT_RCV_WND_SCALED >>
1203 cm_node->tcp_cntxt.loc_seq_num = htonl(ts.tv_nsec);
1204 cm_node->tcp_cntxt.mss = nesvnic->max_frame_size - sizeof(struct iphdr) -
1206 cm_node->tcp_cntxt.rcv_nxt = 0;
1209 cm_node->conn_type = cm_info->conn_type;
1210 cm_node->apbvt_set = 0;
1211 cm_node->accept_pend = 0;
1213 cm_node->nesvnic = nesvnic;
1218 cm_node->loopbackpartner = NULL;
1221 if (ipv4_is_loopback(htonl(cm_node->rem_addr)))
1224 oldarpindex = nes_arp_table(nesdev, cm_node->rem_addr, NULL, NES_ARP_RESOLVE);
1229 kfree(cm_node);
1234 memcpy(cm_node->rem_mac, nesadapter->arp_table[arpindex].mac_addr, ETH_ALEN);
1236 cm_node->rem_mac);
1238 add_hte_node(cm_core, cm_node);
1241 return cm_node;
1248 static int add_ref_cm_node(struct nes_cm_node *cm_node)
1250 atomic_inc(&cm_node->ref_count);
1259 struct nes_cm_node *cm_node)
1264 if (!cm_node)
1267 spin_lock_irqsave(&cm_node->cm_core->ht_lock, flags);
1268 if (atomic_dec_return(&cm_node->ref_count)) {
1269 spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags);
1272 list_del(&cm_node->list);
1274 spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags);
1277 if (!cm_node->accelerated && cm_node->accept_pend) {
1278 BUG_ON(!cm_node->listener);
1279 atomic_dec(&cm_node->listener->pend_accepts_cnt);
1280 BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0);
1282 WARN_ON(cm_node->send_entry);
1283 if (cm_node->recv_entry)
1284 handle_recv_entry(cm_node, 0);
1285 if (cm_node->listener) {
1286 mini_cm_dec_refcnt_listen(cm_core, cm_node->listener, 0);
1288 if (cm_node->apbvt_set && cm_node->nesvnic) {
1289 nes_manage_apbvt(cm_node->nesvnic, cm_node->loc_port,
1291 cm_node->nesvnic->nesdev->pcidev->devfn),
1298 nesqp = cm_node->nesqp;
1300 nesqp->cm_node = NULL;
1302 cm_node->nesqp = NULL;
1305 kfree(cm_node);
1312 static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc,
1339 cm_node->tcp_cntxt.mss)
1340 cm_node->tcp_cntxt.mss = tmp;
1344 cm_node->tcp_cntxt.snd_wscale =
1348 cm_node->send_write0 = 1;
1358 cm_node->tcp_cntxt.mss = NES_CM_DEFAULT_MSS;
1368 static void handle_fin_pkt(struct nes_cm_node *cm_node)
1370 nes_debug(NES_DBG_CM, "Received FIN, cm_node = %p, state = %u. "
1371 "refcnt=%d\n", cm_node, cm_node->state,
1372 atomic_read(&cm_node->ref_count));
1373 switch (cm_node->state) {
1378 cm_node->tcp_cntxt.rcv_nxt++;
1379 cleanup_retrans_entry(cm_node);
1380 cm_node->state = NES_CM_STATE_LAST_ACK;
1381 send_fin(cm_node, NULL);
1384 create_event(cm_node, NES_CM_EVENT_ABORTED);
1385 cm_node->tcp_cntxt.rcv_nxt++;
1386 cleanup_retrans_entry(cm_node);
1387 cm_node->state = NES_CM_STATE_CLOSED;
1388 add_ref_cm_node(cm_node);
1389 send_reset(cm_node, NULL);
1392 cm_node->tcp_cntxt.rcv_nxt++;
1393 cleanup_retrans_entry(cm_node);
1394 cm_node->state = NES_CM_STATE_CLOSING;
1395 send_ack(cm_node, NULL);
1401 cm_node->tcp_cntxt.rcv_nxt++;
1402 cleanup_retrans_entry(cm_node);
1403 cm_node->state = NES_CM_STATE_TIME_WAIT;
1404 send_ack(cm_node, NULL);
1405 schedule_nes_timer(cm_node, NULL, NES_TIMER_TYPE_CLOSE, 1, 0);
1408 cm_node->tcp_cntxt.rcv_nxt++;
1409 cleanup_retrans_entry(cm_node);
1410 cm_node->state = NES_CM_STATE_CLOSED;
1411 rem_ref_cm_node(cm_node->cm_core, cm_node);
1416 cm_node, cm_node->state);
1422 static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
1429 nes_debug(NES_DBG_CM, "Received Reset, cm_node = %p, state = %u."
1430 " refcnt=%d\n", cm_node, cm_node->state,
1431 atomic_read(&cm_node->ref_count));
1432 cleanup_retrans_entry(cm_node);
1433 switch (cm_node->state) {
1436 nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p "
1437 "listener=%p state=%d\n", __func__, __LINE__, cm_node,
1438 cm_node->listener, cm_node->state);
1439 active_open_err(cm_node, skb, reset);
1442 passive_state = atomic_add_return(1, &cm_node->passive_state);
1449 passive_open_err(cm_node, skb, reset);
1452 active_open_err(cm_node, skb, reset);
1460 cm_node->cm_id->rem_ref(cm_node->cm_id);
1462 cm_node->state = NES_CM_STATE_CLOSED;
1463 rem_ref_cm_node(cm_node->cm_core, cm_node);
1473 static void handle_rcv_mpa(struct nes_cm_node *cm_node, struct sk_buff *skb)
1482 ret = parse_mpa(cm_node, dataloc, &res_type, datasize);
1485 if (cm_node->state == NES_CM_STATE_MPAREQ_SENT) {
1487 "cm_node=%p listener=%p state=%d\n", __func__,
1488 __LINE__, cm_node, cm_node->listener,
1489 cm_node->state);
1490 active_open_err(cm_node, skb, 1);
1492 passive_open_err(cm_node, skb, 1);
1497 switch (cm_node->state) {
1505 cm_node->state = NES_CM_STATE_MPAREQ_RCVD;
1507 atomic_set(&cm_node->passive_state,
1511 cleanup_retrans_entry(cm_node);
1514 cm_node->state = NES_CM_STATE_MPAREJ_RCVD;
1517 cm_node->state = NES_CM_STATE_TSA;
1526 create_event(cm_node, type);
1529 static void indicate_pkt_err(struct nes_cm_node *cm_node, struct sk_buff *skb)
1531 switch (cm_node->state) {
1534 nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p "
1535 "listener=%p state=%d\n", __func__, __LINE__, cm_node,
1536 cm_node->listener, cm_node->state);
1537 active_open_err(cm_node, skb, 1);
1541 passive_open_err(cm_node, skb, 1);
1549 static int check_syn(struct nes_cm_node *cm_node, struct tcphdr *tcph,
1554 err = ((ntohl(tcph->ack_seq) == cm_node->tcp_cntxt.loc_seq_num))? 0 : 1;
1556 active_open_err(cm_node, skb, 1);
1561 static int check_seq(struct nes_cm_node *cm_node, struct tcphdr *tcph,
1567 u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num;
1568 u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt;
1572 rcv_wnd = cm_node->tcp_cntxt.rcv_wnd;
1578 nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p "
1579 "listener=%p state=%d\n", __func__, __LINE__, cm_node,
1580 cm_node->listener, cm_node->state);
1581 indicate_pkt_err(cm_node, skb);
1582 nes_debug(NES_DBG_CM, "seq ERROR cm_node =%p seq=0x%08X "
1583 "rcv_nxt=0x%08X rcv_wnd=0x%x\n", cm_node, seq, rcv_nxt,
1595 static void handle_syn_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
1606 switch (cm_node->state) {
1610 active_open_err(cm_node, skb, 1);
1614 if (atomic_read(&cm_node->listener->pend_accepts_cnt) >
1615 cm_node->listener->backlog) {
1619 passive_open_err(cm_node, skb, 0);
1622 ret = handle_tcp_options(cm_node, tcph, skb, optionsize,
1625 passive_open_err(cm_node, skb, 0);
1629 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
1630 BUG_ON(cm_node->send_entry);
1631 cm_node->accept_pend = 1;
1632 atomic_inc(&cm_node->listener->pend_accepts_cnt);
1634 cm_node->state = NES_CM_STATE_SYN_RCVD;
1635 send_syn(cm_node, 1, skb);
1638 cleanup_retrans_entry(cm_node);
1639 add_ref_cm_node(cm_node);
1640 send_reset(cm_node, skb);
1656 static void handle_synack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
1667 switch (cm_node->state) {
1669 cleanup_retrans_entry(cm_node);
1671 if (check_syn(cm_node, tcph, skb))
1673 cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
1675 ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 0);
1677 nes_debug(NES_DBG_CM, "cm_node=%p tcp_options failed\n",
1678 cm_node);
1681 cleanup_retrans_entry(cm_node);
1682 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
1683 send_mpa_request(cm_node, skb);
1684 cm_node->state = NES_CM_STATE_MPAREQ_SENT;
1688 passive_open_err(cm_node, skb, 1);
1691 cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
1692 cleanup_retrans_entry(cm_node);
1693 cm_node->state = NES_CM_STATE_CLOSED;
1694 send_reset(cm_node, skb);
1697 cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
1698 cleanup_retrans_entry(cm_node);
1699 add_ref_cm_node(cm_node);
1700 send_reset(cm_node, skb);
1716 static int handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
1725 if (check_seq(cm_node, tcph, skb))
1731 switch (cm_node->state) {
1734 cleanup_retrans_entry(cm_node);
1735 ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 1);
1738 cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
1739 cm_node->state = NES_CM_STATE_ESTABLISHED;
1741 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
1742 handle_rcv_mpa(cm_node, skb);
1748 cleanup_retrans_entry(cm_node);
1750 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
1751 handle_rcv_mpa(cm_node, skb);
1756 cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
1758 cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
1759 handle_rcv_mpa(cm_node, skb);
1764 cleanup_retrans_entry(cm_node);
1765 cm_node->state = NES_CM_STATE_CLOSED;
1766 send_reset(cm_node, skb);
1769 cleanup_retrans_entry(cm_node);
1770 add_ref_cm_node(cm_node);
1771 send_reset(cm_node, skb);
1775 cleanup_retrans_entry(cm_node);
1776 cm_node->state = NES_CM_STATE_CLOSED;
1777 cm_node->cm_id->rem_ref(cm_node->cm_id);
1778 rem_ref_cm_node(cm_node->cm_core, cm_node);
1782 cleanup_retrans_entry(cm_node);
1784 cm_node->state = NES_CM_STATE_FIN_WAIT2;
1792 cleanup_retrans_entry(cm_node);
1801 static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph,
1806 if (process_options(cm_node, optionsloc, optionsize,
1809 __func__, cm_node);
1811 passive_open_err(cm_node, skb, 1);
1813 active_open_err(cm_node, skb, 1);
1818 cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->window) <<
1819 cm_node->tcp_cntxt.snd_wscale;
1821 if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd)
1822 cm_node->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.snd_wnd;
1831 static void active_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb,
1834 cleanup_retrans_entry(cm_node);
1836 nes_debug(NES_DBG_CM, "ERROR active err called for cm_node=%p, "
1837 "state=%d\n", cm_node, cm_node->state);
1838 add_ref_cm_node(cm_node);
1839 send_reset(cm_node, skb);
1843 cm_node->state = NES_CM_STATE_CLOSED;
1844 create_event(cm_node, NES_CM_EVENT_ABORTED);
1849 * remove the cm_node.
1852 static void passive_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb,
1855 cleanup_retrans_entry(cm_node);
1856 cm_node->state = NES_CM_STATE_CLOSED;
1859 "cm_node=%p state =%d\n", cm_node, cm_node->state);
1860 send_reset(cm_node, skb);
1863 rem_ref_cm_node(cm_node->cm_core, cm_node);
1871 static void free_retrans_entry(struct nes_cm_node *cm_node)
1874 send_entry = cm_node->send_entry;
1876 cm_node->send_entry = NULL;
1879 rem_ref_cm_node(cm_node->cm_core, cm_node);
1883 static void cleanup_retrans_entry(struct nes_cm_node *cm_node)
1887 spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
1888 free_retrans_entry(cm_node);
1889 spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
1896 static void process_packet(struct nes_cm_node *cm_node, struct sk_buff *skb,
1905 nes_debug(NES_DBG_CM, "process_packet: cm_node=%p state =%d syn=%d "
1906 "ack=%d rst=%d fin=%d\n", cm_node, cm_node->state, tcph->syn,
1922 handle_syn_pkt(cm_node, skb, tcph);
1925 handle_synack_pkt(cm_node, skb, tcph);
1928 ret = handle_ack_pkt(cm_node, skb, tcph);
1930 handle_fin_pkt(cm_node);
1933 handle_rst_pkt(cm_node, skb, tcph);
1936 if ((fin_set) && (!check_seq(cm_node, tcph, skb)))
1937 handle_fin_pkt(cm_node);
2019 struct nes_cm_node *cm_node;
2027 cm_node = make_cm_node(cm_core, nesvnic, cm_info, NULL);
2028 if (!cm_node)
2030 mpa_frame = &cm_node->mpa_frame;
2037 cm_node->tcp_cntxt.client = 1;
2038 cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE;
2042 ntohl(nesvnic->local_ipaddr), cm_node->rem_port,
2045 create_event(cm_node, NES_CM_EVENT_ABORTED);
2054 rem_ref_cm_node(cm_node->cm_core, cm_node);
2058 loopbackremotenode->loopbackpartner = cm_node;
2061 cm_node->loopbackpartner = loopbackremotenode;
2068 cm_node->state = NES_CM_STATE_TSA;
2069 cm_node->tcp_cntxt.rcv_nxt =
2072 cm_node->tcp_cntxt.loc_seq_num;
2073 cm_node->tcp_cntxt.max_snd_wnd =
2076 cm_node->tcp_cntxt.rcv_wnd;
2077 cm_node->tcp_cntxt.snd_wnd =
2080 cm_node->tcp_cntxt.rcv_wnd;
2081 cm_node->tcp_cntxt.snd_wscale =
2084 cm_node->tcp_cntxt.rcv_wscale;
2088 return cm_node;
2092 cm_node->tcp_cntxt.client = 1;
2096 cm_node->mpa_frame_size = mpa_frame_size;
2099 cm_node->state = NES_CM_STATE_SYN_SENT;
2100 ret = send_syn(cm_node, 0, NULL);
2103 /* error in sending the syn free up the cm_node struct */
2105 "addr=0x%08X, port=0x%04x, cm_node=%p, cm_id = %p.\n",
2106 cm_node->rem_addr, cm_node->rem_port, cm_node,
2107 cm_node->cm_id);
2108 rem_ref_cm_node(cm_node->cm_core, cm_node);
2109 cm_node = NULL;
2112 if (cm_node)
2114 "port=0x%04x, cm_node=%p, cm_id = %p.\n",
2115 cm_node->rem_addr, cm_node->rem_port, cm_node,
2116 cm_node->cm_id);
2118 return cm_node;
2127 struct ietf_mpa_frame *mpa_frame, struct nes_cm_node *cm_node)
2137 struct ietf_mpa_frame *mpa_frame, struct nes_cm_node *cm_node)
2143 struct iw_cm_id *cm_id = cm_node->cm_id;
2144 struct nes_cm_node *loopback = cm_node->loopbackpartner;
2146 nes_debug(NES_DBG_CM, "%s cm_node=%p type=%d state=%d\n",
2147 __func__, cm_node, cm_node->tcp_cntxt.client, cm_node->state);
2149 if (cm_node->tcp_cntxt.client)
2151 cleanup_retrans_entry(cm_node);
2154 passive_state = atomic_add_return(1, &cm_node->passive_state);
2156 cm_node->state = NES_CM_STATE_CLOSED;
2157 rem_ref_cm_node(cm_core, cm_node);
2159 if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) {
2160 rem_ref_cm_node(cm_core, cm_node);
2162 ret = send_mpa_reject(cm_node);
2164 cm_node->state = NES_CM_STATE_CLOSED;
2165 err = send_reset(cm_node, NULL);
2173 cm_node->cm_id = NULL;
2174 if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) {
2175 rem_ref_cm_node(cm_core, cm_node);
2178 event.cm_node = loopback;
2185 rem_ref_cm_node(cm_core, cm_node);
2201 static int mini_cm_close(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node)
2205 if (!cm_core || !cm_node)
2208 switch (cm_node->state) {
2216 cleanup_retrans_entry(cm_node);
2217 send_reset(cm_node, NULL);
2220 cm_node->state = NES_CM_STATE_LAST_ACK;
2221 send_fin(cm_node, NULL);
2231 cleanup_retrans_entry(cm_node);
2232 send_reset(cm_node, NULL);
2239 ret = rem_ref_cm_node(cm_core, cm_node);
2242 if (cm_node->send_entry)
2244 "send_entry=%p\n", cm_node->send_entry);
2245 ret = rem_ref_cm_node(cm_core, cm_node);
2259 struct nes_cm_node *cm_node = NULL;
2288 cm_node = find_node(cm_core,
2292 if (!cm_node) {
2311 cm_node = make_cm_node(cm_core, nesvnic, &nfo,
2313 if (!cm_node) {
2322 cm_node->state = NES_CM_STATE_LISTENING;
2325 rem_ref_cm_node(cm_core, cm_node);
2329 add_ref_cm_node(cm_node);
2330 } else if (cm_node->state == NES_CM_STATE_TSA) {
2331 rem_ref_cm_node(cm_core, cm_node);
2339 process_packet(cm_node, skb, cm_core);
2340 rem_ref_cm_node(cm_core, cm_node);
2450 static int nes_cm_init_tsa_conn(struct nes_qp *nesqp, struct nes_cm_node *cm_node)
2461 if (cm_node->tcp_cntxt.snd_wscale || cm_node->tcp_cntxt.rcv_wscale)
2466 nesqp->nesqp_context->mss |= cpu_to_le32(((u32)cm_node->tcp_cntxt.mss) << 16);
2472 (cm_node->tcp_cntxt.snd_wscale << NES_QPCONTEXT_PDWSCALE_SND_WSCALE_SHIFT) &
2476 (cm_node->tcp_cntxt.rcv_wscale << NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_SHIFT) &
2482 nesqp->nesqp_context->snd_nxt = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num);
2483 nesqp->nesqp_context->snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.snd_wnd);
2484 nesqp->nesqp_context->rcv_nxt = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt);
2485 nesqp->nesqp_context->rcv_wnd = cpu_to_le32(cm_node->tcp_cntxt.rcv_wnd <<
2486 cm_node->tcp_cntxt.rcv_wscale);
2487 nesqp->nesqp_context->snd_max = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num);
2488 nesqp->nesqp_context->snd_una = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num);
2492 nesqp->nesqp_context->cwnd = cpu_to_le32(2*cm_node->tcp_cntxt.mss);
2493 nesqp->nesqp_context->snd_wl1 = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt);
2494 nesqp->nesqp_context->snd_wl2 = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num);
2495 nesqp->nesqp_context->max_snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.max_snd_wnd);
2501 cm_node->tcp_cntxt.mss, le32_to_cpu(nesqp->nesqp_context->pd_index_wscale),
2508 nes_debug(NES_DBG_CM, "Change cm_node state to TSA\n");
2509 cm_node->state = NES_CM_STATE_TSA;
2722 if (nesqp->cm_node) {
2725 g_cm_core->api->close(g_cm_core, nesqp->cm_node);
2742 struct nes_cm_node *cm_node;
2767 cm_node = (struct nes_cm_node *)cm_id->provider_data;
2768 nes_debug(NES_DBG_CM, "nes_accept: cm_node= %p nesvnic=%p, netdev=%p,"
2769 "%s\n", cm_node, nesvnic, nesvnic->netdev,
2772 if (NES_CM_STATE_LISTENER_DESTROYED == cm_node->state) {
2773 if (cm_node->loopbackpartner)
2774 rem_ref_cm_node(cm_node->cm_core, cm_node->loopbackpartner);
2775 rem_ref_cm_node(cm_node->cm_core, cm_node);
2779 passive_state = atomic_add_return(1, &cm_node->passive_state);
2781 rem_ref_cm_node(cm_node->cm_core, cm_node);
2786 nesqp->cm_node = (void *)cm_node;
2787 cm_node->nesqp = nesqp;
2789 nes_debug(NES_DBG_CM, "QP%u, cm_node=%p, jiffies = %lu listener = %p\n",
2790 nesqp->hwqp.qp_id, cm_node, jiffies, cm_node->listener);
2838 "for lSMM for cm_node = %p \n",
2839 cm_node);
2884 cm_node->cm_id = cm_id;
2886 /* nesqp->cm_node = (void *)cm_id->provider_data; */
2890 if (cm_node->state == NES_CM_STATE_TSA)
2891 nes_debug(NES_DBG_CM, "Already state = TSA for cm_node=%p\n",
2892 cm_node);
2894 nes_cm_init_tsa_conn(nesqp, cm_node);
2946 cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node);
2975 if (cm_node->loopbackpartner) {
2976 cm_node->loopbackpartner->mpa_frame_size =
2978 /* copy entire MPA frame to our cm_node's frame */
2979 memcpy(cm_node->loopbackpartner->mpa_frame_buf,
2981 create_event(cm_node->loopbackpartner, NES_CM_EVENT_CONNECTED);
2996 struct nes_cm_node *cm_node;
3002 cm_node = (struct nes_cm_node *) cm_id->provider_data;
3003 loopback = cm_node->loopbackpartner;
3004 cm_core = cm_node->cm_core;
3005 cm_node->cm_id = cm_id;
3006 cm_node->mpa_frame_size = sizeof(struct ietf_mpa_frame) + pdata_len;
3008 if (cm_node->mpa_frame_size > MAX_CM_BUFFER)
3011 memcpy(&cm_node->mpa_frame.key[0], IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE);
3018 memcpy(&cm_node->mpa_frame.priv_data, pdata, pdata_len);
3019 cm_node->mpa_frame.priv_data_len = cpu_to_be16(pdata_len);
3022 cm_node->mpa_frame.rev = mpa_version;
3023 cm_node->mpa_frame.flags = IETF_MPA_FLAGS_CRC | IETF_MPA_FLAGS_REJECT;
3025 return cm_core->api->reject(cm_core, &cm_node->mpa_frame, cm_node);
3039 struct nes_cm_node *cm_node;
3099 cm_node = g_cm_core->api->connect(g_cm_core, nesvnic,
3102 if (!cm_node) {
3112 cm_node->apbvt_set = apbvt_set;
3113 nesqp->cm_node = cm_node;
3114 cm_node->nesqp = nesqp;
3127 struct nes_cm_listener *cm_node;
3153 cm_node = g_cm_core->api->listen(g_cm_core, nesvnic, &cm_info);
3154 if (!cm_node) {
3160 cm_id->provider_data = cm_node;
3162 if (!cm_node->reused_node) {
3170 g_cm_core->api->stop_listener(g_cm_core, (void *)cm_node);
3177 cm_id->provider_data = (void *)cm_node;
3256 struct nes_cm_node *cm_node;
3267 cm_node = event->cm_node;
3268 cm_id = cm_node->cm_id;
3269 nes_debug(NES_DBG_CM, "cm_event_connected - %p - cm_id = %p\n", cm_node, cm_id);
3287 nes_cm_init_tsa_conn(nesqp, cm_node);
3319 if (cm_node->send_write0) {
3371 nesqp->ietf_frame = &cm_node->mpa_frame;
3372 nesqp->private_data_len = (u8) cm_node->mpa_frame_size;
3373 cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node);
3383 cm_event.private_data = (void *)event->cm_node->mpa_frame_buf;
3384 cm_event.private_data_len = (u8) event->cm_node->mpa_frame_size;
3414 if (!event->cm_node)
3417 cm_id = event->cm_node->cm_id;
3422 nes_debug(NES_DBG_CM, "cm_node=%p, cm_id=%p\n", event->cm_node, cm_id);
3452 rem_ref_cm_node(event->cm_node->cm_core, event->cm_node);
3468 if (!event->cm_node)
3471 if (!event->cm_node->cm_id)
3474 cm_id = event->cm_node->cm_id;
3476 nes_debug(NES_DBG_CM, "%p - cm_id = %p\n", event->cm_node, cm_id);
3501 nes_debug(NES_DBG_CM, "NODE %p Generating CLOSE\n", event->cm_node);
3522 struct nes_cm_node *cm_node;
3524 cm_node = event->cm_node;
3525 if (!cm_node)
3527 cm_id = cm_node->cm_id;
3530 nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n",
3531 cm_node, cm_id, jiffies);
3535 cm_event.provider_data = (void *)cm_node;
3544 cm_event.private_data = cm_node->mpa_frame_buf;
3545 cm_event.private_data_len = (u8) cm_node->mpa_frame_size;
3559 struct nes_cm_node *cm_node;
3562 cm_node = event->cm_node;
3563 if (!cm_node)
3565 cm_id = cm_node->cm_id;
3568 nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n",
3569 cm_node, cm_id, jiffies);
3583 cm_event.private_data = cm_node->mpa_frame_buf;
3584 cm_event.private_data_len = (u8) cm_node->mpa_frame_size;
3608 atomic_inc(&event->cm_node->cm_core->events_posted);
3609 add_ref_cm_node(event->cm_node);
3612 nes_debug(NES_DBG_CM, "cm_node=%p queue_work, event=%p\n",
3613 event->cm_node, event);
3615 queue_work(event->cm_node->cm_core->event_wq, &event->event_work);
3633 if ((!event) || (!event->cm_node) || (!event->cm_node->cm_core))
3636 cm_core = event->cm_node->cm_core;
3643 nes_debug(NES_DBG_CM, "cm_node=%p CM Event: MPA REQUEST\n",
3644 event->cm_node);
3647 nes_debug(NES_DBG_CM, "cm_node = %p CM Event: RESET\n",
3648 event->cm_node);
3652 if ((!event->cm_node->cm_id) ||
3653 (event->cm_node->state != NES_CM_STATE_TSA))
3659 if ((!event->cm_node->cm_id) ||
3660 (event->cm_node->state == NES_CM_STATE_TSA))
3667 if ((!event->cm_node->cm_id) ||
3668 (event->cm_node->state == NES_CM_STATE_TSA))
3683 rem_ref_cm_node(cm_core, event->cm_node);