Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 3991 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c
new file mode 100644
index 000000000..2b67ace5b
--- /dev/null
+++ b/drivers/infiniband/hw/nes/nes_cm.c
@@ -0,0 +1,3991 @@
+/*
+ * Copyright (c) 2006 - 2014 Intel Corporation.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+
+#define TCPOPT_TIMESTAMP 8
+
+#include <linux/atomic.h>
+#include <linux/skbuff.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/init.h>
+#include <linux/if_arp.h>
+#include <linux/if_vlan.h>
+#include <linux/notifier.h>
+#include <linux/net.h>
+#include <linux/types.h>
+#include <linux/timer.h>
+#include <linux/time.h>
+#include <linux/delay.h>
+#include <linux/etherdevice.h>
+#include <linux/netdevice.h>
+#include <linux/random.h>
+#include <linux/list.h>
+#include <linux/threads.h>
+#include <linux/highmem.h>
+#include <linux/slab.h>
+#include <net/arp.h>
+#include <net/neighbour.h>
+#include <net/route.h>
+#include <net/ip_fib.h>
+#include <net/secure_seq.h>
+#include <net/tcp.h>
+#include <linux/fcntl.h>
+
+#include "nes.h"
+
+u32 cm_packets_sent;
+u32 cm_packets_bounced;
+u32 cm_packets_dropped;
+u32 cm_packets_retrans;
+u32 cm_packets_created;
+u32 cm_packets_received;
+atomic_t cm_listens_created;
+atomic_t cm_listens_destroyed;
+u32 cm_backlog_drops;
+atomic_t cm_loopbacks;
+atomic_t cm_nodes_created;
+atomic_t cm_nodes_destroyed;
+atomic_t cm_accel_dropped_pkts;
+atomic_t cm_resets_recvd;
+
+static inline int mini_cm_accelerated(struct nes_cm_core *, struct nes_cm_node *);
+static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *, struct nes_vnic *, struct nes_cm_info *);
+static int mini_cm_del_listen(struct nes_cm_core *, struct nes_cm_listener *);
+static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *, struct nes_vnic *, u16, void *, struct nes_cm_info *);
+static int mini_cm_close(struct nes_cm_core *, struct nes_cm_node *);
+static int mini_cm_accept(struct nes_cm_core *, struct nes_cm_node *);
+static int mini_cm_reject(struct nes_cm_core *, struct nes_cm_node *);
+static int mini_cm_recv_pkt(struct nes_cm_core *, struct nes_vnic *, struct sk_buff *);
+static int mini_cm_dealloc_core(struct nes_cm_core *);
+static int mini_cm_get(struct nes_cm_core *);
+static int mini_cm_set(struct nes_cm_core *, u32, u32);
+
+static void form_cm_frame(struct sk_buff *, struct nes_cm_node *, void *, u32, void *, u32, u8);
+static int add_ref_cm_node(struct nes_cm_node *);
+static int rem_ref_cm_node(struct nes_cm_core *, struct nes_cm_node *);
+
+static int nes_cm_disconn_true(struct nes_qp *);
+static int nes_cm_post_event(struct nes_cm_event *event);
+static int nes_disconnect(struct nes_qp *nesqp, int abrupt);
+static void nes_disconnect_worker(struct work_struct *work);
+
+static int send_mpa_request(struct nes_cm_node *, struct sk_buff *);
+static int send_mpa_reject(struct nes_cm_node *);
+static int send_syn(struct nes_cm_node *, u32, struct sk_buff *);
+static int send_reset(struct nes_cm_node *, struct sk_buff *);
+static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb);
+static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb);
+static void process_packet(struct nes_cm_node *, struct sk_buff *, struct nes_cm_core *);
+
+static void active_open_err(struct nes_cm_node *, struct sk_buff *, int);
+static void passive_open_err(struct nes_cm_node *, struct sk_buff *, int);
+static void cleanup_retrans_entry(struct nes_cm_node *);
+static void handle_rcv_mpa(struct nes_cm_node *, struct sk_buff *);
+static void free_retrans_entry(struct nes_cm_node *cm_node);
+static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph, struct sk_buff *skb, int optionsize, int passive);
+
+/* CM event handler functions */
+static void cm_event_connected(struct nes_cm_event *);
+static void cm_event_connect_error(struct nes_cm_event *);
+static void cm_event_reset(struct nes_cm_event *);
+static void cm_event_mpa_req(struct nes_cm_event *);
+static void cm_event_mpa_reject(struct nes_cm_event *);
+static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node);
+
+/* MPA build functions */
+static int cm_build_mpa_frame(struct nes_cm_node *, u8 **, u16 *, u8 *, u8);
+static void build_mpa_v2(struct nes_cm_node *, void *, u8);
+static void build_mpa_v1(struct nes_cm_node *, void *, u8);
+static void build_rdma0_msg(struct nes_cm_node *, struct nes_qp **);
+
+static void print_core(struct nes_cm_core *core);
+static void record_ird_ord(struct nes_cm_node *, u16, u16);
+
+/* External CM API Interface */
+/* instance of function pointers for client API */
+/* set address of this instance to cm_core->cm_ops at cm_core alloc */
+static const struct nes_cm_ops nes_cm_api = {
+	.accelerated = mini_cm_accelerated,
+	.listen = mini_cm_listen,
+	.stop_listener = mini_cm_del_listen,
+	.connect = mini_cm_connect,
+	.close = mini_cm_close,
+	.accept = mini_cm_accept,
+	.reject = mini_cm_reject,
+	.recv_pkt = mini_cm_recv_pkt,
+	.destroy_cm_core = mini_cm_dealloc_core,
+	.get = mini_cm_get,
+	.set = mini_cm_set
+};
+
+static struct nes_cm_core *g_cm_core;
+
+atomic_t cm_connects;
+atomic_t cm_accepts;
+atomic_t cm_disconnects;
+atomic_t cm_closes;
+atomic_t cm_connecteds;
+atomic_t cm_connect_reqs;
+atomic_t cm_rejects;
+
+int nes_add_ref_cm_node(struct nes_cm_node *cm_node)
+{
+	return add_ref_cm_node(cm_node);
+}
+
+int nes_rem_ref_cm_node(struct nes_cm_node *cm_node)
+{
+	return rem_ref_cm_node(cm_node->cm_core, cm_node);
+}
+/**
+ * create_event
+ */
+static struct nes_cm_event *create_event(struct nes_cm_node *	cm_node,
+					 enum nes_cm_event_type type)
+{
+	struct nes_cm_event *event;
+
+	if (!cm_node->cm_id)
+		return NULL;
+
+	/* allocate an empty event */
+	event = kzalloc(sizeof(*event), GFP_ATOMIC);
+
+	if (!event)
+		return NULL;
+
+	event->type = type;
+	event->cm_node = cm_node;
+	event->cm_info.rem_addr = cm_node->rem_addr;
+	event->cm_info.loc_addr = cm_node->loc_addr;
+	event->cm_info.rem_port = cm_node->rem_port;
+	event->cm_info.loc_port = cm_node->loc_port;
+	event->cm_info.cm_id = cm_node->cm_id;
+
+	nes_debug(NES_DBG_CM, "cm_node=%p Created event=%p, type=%u, "
+		  "dst_addr=%08x[%x], src_addr=%08x[%x]\n",
+		  cm_node, event, type, event->cm_info.loc_addr,
+		  event->cm_info.loc_port, event->cm_info.rem_addr,
+		  event->cm_info.rem_port);
+
+	nes_cm_post_event(event);
+	return event;
+}
+
+
+/**
+ * send_mpa_request
+ */
+static int send_mpa_request(struct nes_cm_node *cm_node, struct sk_buff *skb)
+{
+	u8 start_addr = 0;
+	u8 *start_ptr = &start_addr;
+	u8 **start_buff = &start_ptr;
+	u16 buff_len = 0;
+
+	if (!skb) {
+		nes_debug(NES_DBG_CM, "skb set to NULL\n");
+		return -1;
+	}
+
+	/* send an MPA Request frame */
+	cm_build_mpa_frame(cm_node, start_buff, &buff_len, NULL, MPA_KEY_REQUEST);
+	form_cm_frame(skb, cm_node, NULL, 0, *start_buff, buff_len, SET_ACK);
+
+	return schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0);
+}
+
+
+
+static int send_mpa_reject(struct nes_cm_node *cm_node)
+{
+	struct sk_buff *skb = NULL;
+	u8 start_addr = 0;
+	u8 *start_ptr = &start_addr;
+	u8 **start_buff = &start_ptr;
+	u16 buff_len = 0;
+	struct ietf_mpa_v1 *mpa_frame;
+
+	skb = dev_alloc_skb(MAX_CM_BUFFER);
+	if (!skb) {
+		nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n");
+		return -ENOMEM;
+	}
+
+	/* send an MPA reject frame */
+	cm_build_mpa_frame(cm_node, start_buff, &buff_len, NULL, MPA_KEY_REPLY);
+	mpa_frame = (struct ietf_mpa_v1 *)*start_buff;
+	mpa_frame->flags |= IETF_MPA_FLAGS_REJECT;
+	form_cm_frame(skb, cm_node, NULL, 0, *start_buff, buff_len, SET_ACK | SET_FIN);
+
+	cm_node->state = NES_CM_STATE_FIN_WAIT1;
+	return schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0);
+}
+
+
+/**
+ * recv_mpa - process a received TCP pkt, we are expecting an
+ * IETF MPA frame
+ */
+static int parse_mpa(struct nes_cm_node *cm_node, u8 *buffer, u32 *type,
+		     u32 len)
+{
+	struct ietf_mpa_v1 *mpa_frame;
+	struct ietf_mpa_v2 *mpa_v2_frame;
+	struct ietf_rtr_msg *rtr_msg;
+	int mpa_hdr_len;
+	int priv_data_len;
+
+	*type = NES_MPA_REQUEST_ACCEPT;
+
+	/* assume req frame is in tcp data payload */
+	if (len < sizeof(struct ietf_mpa_v1)) {
+		nes_debug(NES_DBG_CM, "The received ietf buffer was too small (%x)\n", len);
+		return -EINVAL;
+	}
+
+	/* points to the beginning of the frame, which could be MPA V1 or V2 */
+	mpa_frame = (struct ietf_mpa_v1 *)buffer;
+	mpa_hdr_len = sizeof(struct ietf_mpa_v1);
+	priv_data_len = ntohs(mpa_frame->priv_data_len);
+
+	/* make sure mpa private data len is less than 512 bytes */
+	if (priv_data_len > IETF_MAX_PRIV_DATA_LEN) {
+		nes_debug(NES_DBG_CM, "The received Length of Private"
+			  " Data field exceeds 512 octets\n");
+		return -EINVAL;
+	}
+	/*
+	 * make sure MPA receiver interoperate with the
+	 * received MPA version and MPA key information
+	 *
+	 */
+	if (mpa_frame->rev != IETF_MPA_V1 && mpa_frame->rev != IETF_MPA_V2) {
+		nes_debug(NES_DBG_CM, "The received mpa version"
+			  " is not supported\n");
+		return -EINVAL;
+	}
+	/*
+	* backwards compatibility only
+	*/
+	if (mpa_frame->rev > cm_node->mpa_frame_rev) {
+		nes_debug(NES_DBG_CM, "The received mpa version"
+			" can not be interoperated\n");
+		return -EINVAL;
+	} else {
+		cm_node->mpa_frame_rev = mpa_frame->rev;
+	}
+
+	if (cm_node->state != NES_CM_STATE_MPAREQ_SENT) {
+		if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE)) {
+			nes_debug(NES_DBG_CM, "Unexpected MPA Key received \n");
+			return -EINVAL;
+		}
+	} else {
+		if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE)) {
+			nes_debug(NES_DBG_CM, "Unexpected MPA Key received \n");
+			return -EINVAL;
+		}
+	}
+
+	if (priv_data_len + mpa_hdr_len != len) {
+		nes_debug(NES_DBG_CM, "The received ietf buffer was not right"
+			" complete (%x + %x != %x)\n",
+			priv_data_len, mpa_hdr_len, len);
+		return -EINVAL;
+	}
+	/* make sure it does not exceed the max size */
+	if (len > MAX_CM_BUFFER) {
+		nes_debug(NES_DBG_CM, "The received ietf buffer was too large"
+			" (%x + %x != %x)\n",
+			priv_data_len, mpa_hdr_len, len);
+		return -EINVAL;
+	}
+
+	cm_node->mpa_frame_size = priv_data_len;
+
+	switch (mpa_frame->rev) {
+	case IETF_MPA_V2: {
+		u16 ird_size;
+		u16 ord_size;
+		u16 rtr_ctrl_ird;
+		u16 rtr_ctrl_ord;
+
+		mpa_v2_frame = (struct ietf_mpa_v2 *)buffer;
+		mpa_hdr_len += IETF_RTR_MSG_SIZE;
+		cm_node->mpa_frame_size -= IETF_RTR_MSG_SIZE;
+		rtr_msg = &mpa_v2_frame->rtr_msg;
+
+		/* parse rtr message */
+		rtr_ctrl_ird = ntohs(rtr_msg->ctrl_ird);
+		rtr_ctrl_ord = ntohs(rtr_msg->ctrl_ord);
+		ird_size = rtr_ctrl_ird & IETF_NO_IRD_ORD;
+		ord_size = rtr_ctrl_ord & IETF_NO_IRD_ORD;
+
+		if (!(rtr_ctrl_ird & IETF_PEER_TO_PEER)) {
+			/* send reset */
+			return -EINVAL;
+		}
+		if (ird_size == IETF_NO_IRD_ORD || ord_size == IETF_NO_IRD_ORD)
+			cm_node->mpav2_ird_ord = IETF_NO_IRD_ORD;
+
+		if (cm_node->mpav2_ird_ord != IETF_NO_IRD_ORD) {
+			/* responder */
+			if (cm_node->state != NES_CM_STATE_MPAREQ_SENT) {
+				/* we are still negotiating */
+				if (ord_size > NES_MAX_IRD) {
+					cm_node->ird_size = NES_MAX_IRD;
+				} else {
+					cm_node->ird_size = ord_size;
+					if (ord_size == 0 &&
+					(rtr_ctrl_ord & IETF_RDMA0_READ)) {
+						cm_node->ird_size = 1;
+						nes_debug(NES_DBG_CM,
+						"%s: Remote peer doesn't support RDMA0_READ (ord=%u)\n",
+							__func__, ord_size);
+					}
+				}
+				if (ird_size > NES_MAX_ORD)
+					cm_node->ord_size = NES_MAX_ORD;
+				else
+					cm_node->ord_size = ird_size;
+			} else { /* initiator */
+				if (ord_size > NES_MAX_IRD) {
+					nes_debug(NES_DBG_CM,
+					"%s: Unable to support the requested (ord =%u)\n",
+							__func__, ord_size);
+					return -EINVAL;
+				}
+				cm_node->ird_size = ord_size;
+
+				if (ird_size > NES_MAX_ORD) {
+					cm_node->ord_size = NES_MAX_ORD;
+				} else {
+					if (ird_size == 0 &&
+					(rtr_ctrl_ord & IETF_RDMA0_READ)) {
+						nes_debug(NES_DBG_CM,
+						"%s: Remote peer doesn't support RDMA0_READ (ird=%u)\n",
+							__func__, ird_size);
+						return -EINVAL;
+					} else {
+						cm_node->ord_size = ird_size;
+					}
+				}
+			}
+		}
+
+		if (rtr_ctrl_ord & IETF_RDMA0_READ) {
+			cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO;
+
+		} else if (rtr_ctrl_ord & IETF_RDMA0_WRITE) {
+			cm_node->send_rdma0_op = SEND_RDMA_WRITE_ZERO;
+		} else {        /* Not supported RDMA0 operation */
+			return -EINVAL;
+		}
+		break;
+	}
+	case IETF_MPA_V1:
+	default:
+		break;
+	}
+
+	/* copy entire MPA frame to our cm_node's frame */
+	memcpy(cm_node->mpa_frame_buf, buffer + mpa_hdr_len, cm_node->mpa_frame_size);
+
+	if (mpa_frame->flags & IETF_MPA_FLAGS_REJECT)
+		*type = NES_MPA_REQUEST_REJECT;
+	return 0;
+}
+
+
+/**
+ * form_cm_frame - get a free packet and build empty frame Use
+ * node info to build.
+ */
+static void form_cm_frame(struct sk_buff *skb,
+			  struct nes_cm_node *cm_node, void *options, u32 optionsize,
+			  void *data, u32 datasize, u8 flags)
+{
+	struct tcphdr *tcph;
+	struct iphdr *iph;
+	struct ethhdr *ethh;
+	u8 *buf;
+	u16 packetsize = sizeof(*iph);
+
+	packetsize += sizeof(*tcph);
+	packetsize += optionsize + datasize;
+
+	skb_trim(skb, 0);
+	memset(skb->data, 0x00, ETH_HLEN + sizeof(*iph) + sizeof(*tcph));
+
+	buf = skb_put(skb, packetsize + ETH_HLEN);
+
+	ethh = (struct ethhdr *)buf;
+	buf += ETH_HLEN;
+
+	iph = (struct iphdr *)buf;
+	buf += sizeof(*iph);
+	tcph = (struct tcphdr *)buf;
+	skb_reset_mac_header(skb);
+	skb_set_network_header(skb, ETH_HLEN);
+	skb_set_transport_header(skb, ETH_HLEN + sizeof(*iph));
+	buf += sizeof(*tcph);
+
+	skb->ip_summed = CHECKSUM_PARTIAL;
+	if (!(cm_node->netdev->features & NETIF_F_IP_CSUM))
+		skb->ip_summed = CHECKSUM_NONE;
+	skb->protocol = htons(0x800);
+	skb->data_len = 0;
+	skb->mac_len = ETH_HLEN;
+
+	memcpy(ethh->h_dest, cm_node->rem_mac, ETH_ALEN);
+	memcpy(ethh->h_source, cm_node->loc_mac, ETH_ALEN);
+	ethh->h_proto = htons(0x0800);
+
+	iph->version = IPVERSION;
+	iph->ihl = 5;           /* 5 * 4Byte words, IP headr len */
+	iph->tos = 0;
+	iph->tot_len = htons(packetsize);
+	iph->id = htons(++cm_node->tcp_cntxt.loc_id);
+
+	iph->frag_off = htons(0x4000);
+	iph->ttl = 0x40;
+	iph->protocol = 0x06;   /* IPPROTO_TCP */
+
+	iph->saddr = htonl(cm_node->loc_addr);
+	iph->daddr = htonl(cm_node->rem_addr);
+
+	tcph->source = htons(cm_node->loc_port);
+	tcph->dest = htons(cm_node->rem_port);
+	tcph->seq = htonl(cm_node->tcp_cntxt.loc_seq_num);
+
+	if (flags & SET_ACK) {
+		cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt;
+		tcph->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num);
+		tcph->ack = 1;
+	} else {
+		tcph->ack_seq = 0;
+	}
+
+	if (flags & SET_SYN) {
+		cm_node->tcp_cntxt.loc_seq_num++;
+		tcph->syn = 1;
+	} else {
+		cm_node->tcp_cntxt.loc_seq_num += datasize;
+	}
+
+	if (flags & SET_FIN) {
+		cm_node->tcp_cntxt.loc_seq_num++;
+		tcph->fin = 1;
+	}
+
+	if (flags & SET_RST)
+		tcph->rst = 1;
+
+	tcph->doff = (u16)((sizeof(*tcph) + optionsize + 3) >> 2);
+	tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd);
+	tcph->urg_ptr = 0;
+	if (optionsize)
+		memcpy(buf, options, optionsize);
+	buf += optionsize;
+	if (datasize)
+		memcpy(buf, data, datasize);
+
+	skb_shinfo(skb)->nr_frags = 0;
+	cm_packets_created++;
+}
+
+/**
+ * print_core - dump a cm core
+ */
+static void print_core(struct nes_cm_core *core)
+{
+	nes_debug(NES_DBG_CM, "---------------------------------------------\n");
+	nes_debug(NES_DBG_CM, "CM Core  -- (core = %p )\n", core);
+	if (!core)
+		return;
+	nes_debug(NES_DBG_CM, "---------------------------------------------\n");
+
+	nes_debug(NES_DBG_CM, "State         : %u \n", core->state);
+
+	nes_debug(NES_DBG_CM, "Listen Nodes  : %u \n", atomic_read(&core->listen_node_cnt));
+	nes_debug(NES_DBG_CM, "Active Nodes  : %u \n", atomic_read(&core->node_cnt));
+
+	nes_debug(NES_DBG_CM, "core          : %p \n", core);
+
+	nes_debug(NES_DBG_CM, "-------------- end core ---------------\n");
+}
+
+static void record_ird_ord(struct nes_cm_node *cm_node,
+					u16 conn_ird, u16 conn_ord)
+{
+	if (conn_ird > NES_MAX_IRD)
+		conn_ird = NES_MAX_IRD;
+
+	if (conn_ord > NES_MAX_ORD)
+		conn_ord = NES_MAX_ORD;
+
+	cm_node->ird_size = conn_ird;
+	cm_node->ord_size = conn_ord;
+}
+
+/**
+ * cm_build_mpa_frame - build a MPA V1 frame or MPA V2 frame
+ */
+static int cm_build_mpa_frame(struct nes_cm_node *cm_node, u8 **start_buff,
+			      u16 *buff_len, u8 *pci_mem, u8 mpa_key)
+{
+	int ret = 0;
+
+	*start_buff = (pci_mem) ? pci_mem : &cm_node->mpa_frame_buf[0];
+
+	switch (cm_node->mpa_frame_rev) {
+	case IETF_MPA_V1:
+		*start_buff = (u8 *)*start_buff + sizeof(struct ietf_rtr_msg);
+		*buff_len = sizeof(struct ietf_mpa_v1) + cm_node->mpa_frame_size;
+		build_mpa_v1(cm_node, *start_buff, mpa_key);
+		break;
+	case IETF_MPA_V2:
+		*buff_len = sizeof(struct ietf_mpa_v2) + cm_node->mpa_frame_size;
+		build_mpa_v2(cm_node, *start_buff, mpa_key);
+		break;
+	default:
+		ret = -EINVAL;
+	}
+	return ret;
+}
+
+/**
+ * build_mpa_v2 - build a MPA V2 frame
+ */
+static void build_mpa_v2(struct nes_cm_node *cm_node,
+			 void *start_addr, u8 mpa_key)
+{
+	struct ietf_mpa_v2 *mpa_frame = (struct ietf_mpa_v2 *)start_addr;
+	struct ietf_rtr_msg *rtr_msg = &mpa_frame->rtr_msg;
+	u16 ctrl_ird;
+	u16 ctrl_ord;
+
+	/* initialize the upper 5 bytes of the frame */
+	build_mpa_v1(cm_node, start_addr, mpa_key);
+	mpa_frame->flags |= IETF_MPA_V2_FLAG; /* set a bit to indicate MPA V2 */
+	mpa_frame->priv_data_len += htons(IETF_RTR_MSG_SIZE);
+
+	/* initialize RTR msg */
+	if (cm_node->mpav2_ird_ord == IETF_NO_IRD_ORD) {
+		ctrl_ird = IETF_NO_IRD_ORD;
+		ctrl_ord = IETF_NO_IRD_ORD;
+	} else {
+		ctrl_ird = cm_node->ird_size & IETF_NO_IRD_ORD;
+		ctrl_ord = cm_node->ord_size & IETF_NO_IRD_ORD;
+	}
+	ctrl_ird |= IETF_PEER_TO_PEER;
+
+	switch (mpa_key) {
+	case MPA_KEY_REQUEST:
+		ctrl_ord |= IETF_RDMA0_WRITE;
+		ctrl_ord |= IETF_RDMA0_READ;
+		break;
+	case MPA_KEY_REPLY:
+		switch (cm_node->send_rdma0_op) {
+		case SEND_RDMA_WRITE_ZERO:
+			ctrl_ord |= IETF_RDMA0_WRITE;
+			break;
+		case SEND_RDMA_READ_ZERO:
+			ctrl_ord |= IETF_RDMA0_READ;
+			break;
+		}
+	}
+	rtr_msg->ctrl_ird = htons(ctrl_ird);
+	rtr_msg->ctrl_ord = htons(ctrl_ord);
+}
+
+/**
+ * build_mpa_v1 - build a MPA V1 frame
+ */
+static void build_mpa_v1(struct nes_cm_node *cm_node, void *start_addr, u8 mpa_key)
+{
+	struct ietf_mpa_v1 *mpa_frame = (struct ietf_mpa_v1 *)start_addr;
+
+	switch (mpa_key) {
+	case MPA_KEY_REQUEST:
+		memcpy(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE);
+		break;
+	case MPA_KEY_REPLY:
+		memcpy(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE);
+		break;
+	}
+	mpa_frame->flags = IETF_MPA_FLAGS_CRC;
+	mpa_frame->rev = cm_node->mpa_frame_rev;
+	mpa_frame->priv_data_len = htons(cm_node->mpa_frame_size);
+}
+
+static void build_rdma0_msg(struct nes_cm_node *cm_node, struct nes_qp **nesqp_addr)
+{
+	u64 u64temp;
+	struct nes_qp *nesqp = *nesqp_addr;
+	struct nes_hw_qp_wqe *wqe = &nesqp->hwqp.sq_vbase[0];
+
+	u64temp = (unsigned long)nesqp->nesuqp_addr;
+	u64temp |= NES_SW_CONTEXT_ALIGN >> 1;
+	set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, u64temp);
+
+	wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_LOW_IDX] = 0;
+	wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_HIGH_IDX] = 0;
+
+	switch (cm_node->send_rdma0_op) {
+	case SEND_RDMA_WRITE_ZERO:
+		nes_debug(NES_DBG_CM, "Sending first write.\n");
+		wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] =
+			cpu_to_le32(NES_IWARP_SQ_OP_RDMAW);
+		wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = 0;
+		wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = 0;
+		wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 0;
+		break;
+
+	case SEND_RDMA_READ_ZERO:
+	default:
+		if (cm_node->send_rdma0_op != SEND_RDMA_READ_ZERO)
+			WARN(1, "Unsupported RDMA0 len operation=%u\n",
+			     cm_node->send_rdma0_op);
+		nes_debug(NES_DBG_CM, "Sending first rdma operation.\n");
+		wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] =
+			cpu_to_le32(NES_IWARP_SQ_OP_RDMAR);
+		wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX] = 1;
+		wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_HIGH_IDX] = 0;
+		wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] = 0;
+		wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_STAG_IDX] = 1;
+		wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 1;
+		break;
+	}
+
+	if (nesqp->sq_kmapped) {
+		nesqp->sq_kmapped = 0;
+		kunmap(nesqp->page);
+	}
+
+	/*use the reserved spot on the WQ for the extra first WQE*/
+	nesqp->nesqp_context->ird_ord_sizes &= cpu_to_le32(~(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT |
+							     NES_QPCONTEXT_ORDIRD_WRPDU |
+							     NES_QPCONTEXT_ORDIRD_ALSMM));
+	nesqp->skip_lsmm = 1;
+	nesqp->hwqp.sq_tail = 0;
+}
+
+/**
+ * schedule_nes_timer
+ * note - cm_node needs to be protected before calling this. Encase in:
+ *			rem_ref_cm_node(cm_core, cm_node);add_ref_cm_node(cm_node);
+ */
+int schedule_nes_timer(struct nes_cm_node *cm_node, struct sk_buff *skb,
+		       enum nes_timer_type type, int send_retrans,
+		       int close_when_complete)
+{
+	unsigned long flags;
+	struct nes_cm_core *cm_core = cm_node->cm_core;
+	struct nes_timer_entry *new_send;
+	int ret = 0;
+
+	new_send = kzalloc(sizeof(*new_send), GFP_ATOMIC);
+	if (!new_send)
+		return -ENOMEM;
+
+	/* new_send->timetosend = currenttime */
+	new_send->retrycount = NES_DEFAULT_RETRYS;
+	new_send->retranscount = NES_DEFAULT_RETRANS;
+	new_send->skb = skb;
+	new_send->timetosend = jiffies;
+	new_send->type = type;
+	new_send->netdev = cm_node->netdev;
+	new_send->send_retrans = send_retrans;
+	new_send->close_when_complete = close_when_complete;
+
+	if (type == NES_TIMER_TYPE_CLOSE) {
+		new_send->timetosend += (HZ / 10);
+		if (cm_node->recv_entry) {
+			kfree(new_send);
+			WARN_ON(1);
+			return -EINVAL;
+		}
+		cm_node->recv_entry = new_send;
+	}
+
+	if (type == NES_TIMER_TYPE_SEND) {
+		new_send->seq_num = ntohl(tcp_hdr(skb)->seq);
+		refcount_inc(&new_send->skb->users);
+		spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
+		cm_node->send_entry = new_send;
+		add_ref_cm_node(cm_node);
+		spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
+		new_send->timetosend = jiffies + NES_RETRY_TIMEOUT;
+
+		ret = nes_nic_cm_xmit(new_send->skb, cm_node->netdev);
+		if (ret != NETDEV_TX_OK) {
+			nes_debug(NES_DBG_CM, "Error sending packet %p "
+				  "(jiffies = %lu)\n", new_send, jiffies);
+			new_send->timetosend = jiffies;
+			ret = NETDEV_TX_OK;
+		} else {
+			cm_packets_sent++;
+			if (!send_retrans) {
+				cleanup_retrans_entry(cm_node);
+				if (close_when_complete)
+					rem_ref_cm_node(cm_core, cm_node);
+				return ret;
+			}
+		}
+	}
+
+	if (!timer_pending(&cm_core->tcp_timer))
+		mod_timer(&cm_core->tcp_timer, new_send->timetosend);
+
+	return ret;
+}
+
+static void nes_retrans_expired(struct nes_cm_node *cm_node)
+{
+	struct iw_cm_id *cm_id = cm_node->cm_id;
+	enum nes_cm_node_state state = cm_node->state;
+	cm_node->state = NES_CM_STATE_CLOSED;
+
+	switch (state) {
+	case NES_CM_STATE_SYN_RCVD:
+	case NES_CM_STATE_CLOSING:
+		rem_ref_cm_node(cm_node->cm_core, cm_node);
+		break;
+	case NES_CM_STATE_LAST_ACK:
+	case NES_CM_STATE_FIN_WAIT1:
+		if (cm_node->cm_id)
+			cm_id->rem_ref(cm_id);
+		send_reset(cm_node, NULL);
+		break;
+	default:
+		add_ref_cm_node(cm_node);
+		send_reset(cm_node, NULL);
+		create_event(cm_node, NES_CM_EVENT_ABORTED);
+	}
+}
+
+static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node)
+{
+	struct nes_timer_entry *recv_entry = cm_node->recv_entry;
+	struct iw_cm_id *cm_id = cm_node->cm_id;
+	struct nes_qp *nesqp;
+	unsigned long qplockflags;
+
+	if (!recv_entry)
+		return;
+	nesqp = (struct nes_qp *)recv_entry->skb;
+	if (nesqp) {
+		spin_lock_irqsave(&nesqp->lock, qplockflags);
+		if (nesqp->cm_id) {
+			nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, "
+				  "refcount = %d: HIT A "
+				  "NES_TIMER_TYPE_CLOSE with something "
+				  "to do!!!\n", nesqp->hwqp.qp_id, cm_id,
+				  atomic_read(&nesqp->refcount));
+			nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
+			nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
+			nesqp->ibqp_state = IB_QPS_ERR;
+			spin_unlock_irqrestore(&nesqp->lock, qplockflags);
+			nes_cm_disconn(nesqp);
+		} else {
+			spin_unlock_irqrestore(&nesqp->lock, qplockflags);
+			nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, "
+				  "refcount = %d: HIT A "
+				  "NES_TIMER_TYPE_CLOSE with nothing "
+				  "to do!!!\n", nesqp->hwqp.qp_id, cm_id,
+				  atomic_read(&nesqp->refcount));
+		}
+	} else if (rem_node) {
+		/* TIME_WAIT state */
+		rem_ref_cm_node(cm_node->cm_core, cm_node);
+	}
+	if (cm_node->cm_id)
+		cm_id->rem_ref(cm_id);
+	kfree(recv_entry);
+	cm_node->recv_entry = NULL;
+}
+
+/**
+ * nes_cm_timer_tick
+ */
+static void nes_cm_timer_tick(struct timer_list *unused)
+{
+	unsigned long flags;
+	unsigned long nexttimeout = jiffies + NES_LONG_TIME;
+	struct nes_cm_node *cm_node;
+	struct nes_timer_entry *send_entry, *recv_entry;
+	struct list_head *list_core_temp;
+	struct list_head *list_node;
+	struct nes_cm_core *cm_core = g_cm_core;
+	u32 settimer = 0;
+	unsigned long timetosend;
+	int ret = NETDEV_TX_OK;
+
+	struct list_head timer_list;
+
+	INIT_LIST_HEAD(&timer_list);
+	spin_lock_irqsave(&cm_core->ht_lock, flags);
+
+	list_for_each_safe(list_node, list_core_temp,
+			   &cm_core->connected_nodes) {
+		cm_node = container_of(list_node, struct nes_cm_node, list);
+		if ((cm_node->recv_entry) || (cm_node->send_entry)) {
+			add_ref_cm_node(cm_node);
+			list_add(&cm_node->timer_entry, &timer_list);
+		}
+	}
+	spin_unlock_irqrestore(&cm_core->ht_lock, flags);
+
+	list_for_each_safe(list_node, list_core_temp, &timer_list) {
+		cm_node = container_of(list_node, struct nes_cm_node,
+				       timer_entry);
+		recv_entry = cm_node->recv_entry;
+
+		if (recv_entry) {
+			if (time_after(recv_entry->timetosend, jiffies)) {
+				if (nexttimeout > recv_entry->timetosend ||
+				    !settimer) {
+					nexttimeout = recv_entry->timetosend;
+					settimer = 1;
+				}
+			} else {
+				handle_recv_entry(cm_node, 1);
+			}
+		}
+
+		spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
+		do {
+			send_entry = cm_node->send_entry;
+			if (!send_entry)
+				break;
+			if (time_after(send_entry->timetosend, jiffies)) {
+				if (cm_node->state != NES_CM_STATE_TSA) {
+					if ((nexttimeout >
+					     send_entry->timetosend) ||
+					    !settimer) {
+						nexttimeout =
+							send_entry->timetosend;
+						settimer = 1;
+					}
+				} else {
+					free_retrans_entry(cm_node);
+				}
+				break;
+			}
+
+			if ((cm_node->state == NES_CM_STATE_TSA) ||
+			    (cm_node->state == NES_CM_STATE_CLOSED)) {
+				free_retrans_entry(cm_node);
+				break;
+			}
+
+			if (!send_entry->retranscount ||
+			    !send_entry->retrycount) {
+				cm_packets_dropped++;
+				free_retrans_entry(cm_node);
+
+				spin_unlock_irqrestore(
+					&cm_node->retrans_list_lock, flags);
+				nes_retrans_expired(cm_node);
+				cm_node->state = NES_CM_STATE_CLOSED;
+				spin_lock_irqsave(&cm_node->retrans_list_lock,
+						  flags);
+				break;
+			}
+			refcount_inc(&send_entry->skb->users);
+			cm_packets_retrans++;
+			nes_debug(NES_DBG_CM, "Retransmitting send_entry %p "
+				  "for node %p, jiffies = %lu, time to send = "
+				  "%lu, retranscount = %u, send_entry->seq_num = "
+				  "0x%08X, cm_node->tcp_cntxt.rem_ack_num = "
+				  "0x%08X\n", send_entry, cm_node, jiffies,
+				  send_entry->timetosend,
+				  send_entry->retranscount,
+				  send_entry->seq_num,
+				  cm_node->tcp_cntxt.rem_ack_num);
+
+			spin_unlock_irqrestore(&cm_node->retrans_list_lock,
+					       flags);
+			ret = nes_nic_cm_xmit(send_entry->skb, cm_node->netdev);
+			spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
+			if (ret != NETDEV_TX_OK) {
+				nes_debug(NES_DBG_CM, "rexmit failed for "
+					  "node=%p\n", cm_node);
+				cm_packets_bounced++;
+				send_entry->retrycount--;
+				nexttimeout = jiffies + NES_SHORT_TIME;
+				settimer = 1;
+				break;
+			} else {
+				cm_packets_sent++;
+			}
+			nes_debug(NES_DBG_CM, "Packet Sent: retrans count = "
+				  "%u, retry count = %u.\n",
+				  send_entry->retranscount,
+				  send_entry->retrycount);
+			if (send_entry->send_retrans) {
+				send_entry->retranscount--;
+				timetosend = (NES_RETRY_TIMEOUT <<
+					      (NES_DEFAULT_RETRANS - send_entry->retranscount));
+
+				send_entry->timetosend = jiffies +
+							 min(timetosend, NES_MAX_TIMEOUT);
+				if (nexttimeout > send_entry->timetosend ||
+				    !settimer) {
+					nexttimeout = send_entry->timetosend;
+					settimer = 1;
+				}
+			} else {
+				int close_when_complete;
+				close_when_complete =
+					send_entry->close_when_complete;
+				nes_debug(NES_DBG_CM, "cm_node=%p state=%d\n",
+					  cm_node, cm_node->state);
+				free_retrans_entry(cm_node);
+				if (close_when_complete)
+					rem_ref_cm_node(cm_node->cm_core,
+							cm_node);
+			}
+		} while (0);
+
+		spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
+		rem_ref_cm_node(cm_node->cm_core, cm_node);
+	}
+
+	if (settimer) {
+		if (!timer_pending(&cm_core->tcp_timer))
+			mod_timer(&cm_core->tcp_timer, nexttimeout);
+	}
+}
+
+
+/**
+ * send_syn
+ */
+static int send_syn(struct nes_cm_node *cm_node, u32 sendack,
+		    struct sk_buff *skb)
+{
+	int ret;
+	int flags = SET_SYN;
+	char optionsbuffer[sizeof(struct option_mss) +
+			   sizeof(struct option_windowscale) + sizeof(struct option_base) +
+			   TCP_OPTIONS_PADDING];
+
+	int optionssize = 0;
+	/* Sending MSS option */
+	union all_known_options *options;
+
+	if (!cm_node)
+		return -EINVAL;
+
+	options = (union all_known_options *)&optionsbuffer[optionssize];
+	options->as_mss.optionnum = OPTION_NUMBER_MSS;
+	options->as_mss.length = sizeof(struct option_mss);
+	options->as_mss.mss = htons(cm_node->tcp_cntxt.mss);
+	optionssize += sizeof(struct option_mss);
+
+	options = (union all_known_options *)&optionsbuffer[optionssize];
+	options->as_windowscale.optionnum = OPTION_NUMBER_WINDOW_SCALE;
+	options->as_windowscale.length = sizeof(struct option_windowscale);
+	options->as_windowscale.shiftcount = cm_node->tcp_cntxt.rcv_wscale;
+	optionssize += sizeof(struct option_windowscale);
+
+	if (sendack && !(NES_DRV_OPT_SUPRESS_OPTION_BC & nes_drv_opt)) {
+		options = (union all_known_options *)&optionsbuffer[optionssize];
+		options->as_base.optionnum = OPTION_NUMBER_WRITE0;
+		options->as_base.length = sizeof(struct option_base);
+		optionssize += sizeof(struct option_base);
+		/* we need the size to be a multiple of 4 */
+		options = (union all_known_options *)&optionsbuffer[optionssize];
+		options->as_end = 1;
+		optionssize += 1;
+		options = (union all_known_options *)&optionsbuffer[optionssize];
+		options->as_end = 1;
+		optionssize += 1;
+	}
+
+	options = (union all_known_options *)&optionsbuffer[optionssize];
+	options->as_end = OPTION_NUMBER_END;
+	optionssize += 1;
+
+	if (!skb)
+		skb = dev_alloc_skb(MAX_CM_BUFFER);
+	if (!skb) {
+		nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n");
+		return -1;
+	}
+
+	if (sendack)
+		flags |= SET_ACK;
+
+	form_cm_frame(skb, cm_node, optionsbuffer, optionssize, NULL, 0, flags);
+	ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0);
+
+	return ret;
+}
+
+
+/**
+ * send_reset
+ */
+static int send_reset(struct nes_cm_node *cm_node, struct sk_buff *skb)
+{
+	int ret;
+	int flags = SET_RST | SET_ACK;
+
+	if (!skb)
+		skb = dev_alloc_skb(MAX_CM_BUFFER);
+	if (!skb) {
+		nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n");
+		return -ENOMEM;
+	}
+
+	form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, flags);
+	ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 1);
+
+	return ret;
+}
+
+
+/**
+ * send_ack
+ */
+static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb)
+{
+	int ret;
+
+	if (!skb)
+		skb = dev_alloc_skb(MAX_CM_BUFFER);
+
+	if (!skb) {
+		nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n");
+		return -1;
+	}
+
+	form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, SET_ACK);
+	ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 0);
+
+	return ret;
+}
+
+
+/**
+ * send_fin
+ */
+static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb)
+{
+	int ret;
+
+	/* if we didn't get a frame get one */
+	if (!skb)
+		skb = dev_alloc_skb(MAX_CM_BUFFER);
+
+	if (!skb) {
+		nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n");
+		return -1;
+	}
+
+	form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, SET_ACK | SET_FIN);
+	ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0);
+
+	return ret;
+}
+
+
+/**
+ * find_node - find a cm node that matches the reference cm node
+ */
+static struct nes_cm_node *find_node(struct nes_cm_core *cm_core,
+				     u16 rem_port, nes_addr_t rem_addr, u16 loc_port, nes_addr_t loc_addr)
+{
+	unsigned long flags;
+	struct list_head *hte;
+	struct nes_cm_node *cm_node;
+
+	/* get a handle on the hte */
+	hte = &cm_core->connected_nodes;
+
+	/* walk list and find cm_node associated with this session ID */
+	spin_lock_irqsave(&cm_core->ht_lock, flags);
+	list_for_each_entry(cm_node, hte, list) {
+		/* compare quad, return node handle if a match */
+		nes_debug(NES_DBG_CM, "finding node %x:%x =? %x:%x ^ %x:%x =? %x:%x\n",
+			  cm_node->loc_addr, cm_node->loc_port,
+			  loc_addr, loc_port,
+			  cm_node->rem_addr, cm_node->rem_port,
+			  rem_addr, rem_port);
+		if ((cm_node->loc_addr == loc_addr) &&
+		    (cm_node->loc_port == loc_port) &&
+		    (cm_node->rem_addr == rem_addr) &&
+		    (cm_node->rem_port == rem_port)) {
+			add_ref_cm_node(cm_node);
+			spin_unlock_irqrestore(&cm_core->ht_lock, flags);
+			return cm_node;
+		}
+	}
+	spin_unlock_irqrestore(&cm_core->ht_lock, flags);
+
+	/* no owner node */
+	return NULL;
+}
+
+
+/**
+ * find_listener - find a cm node listening on this addr-port pair
+ */
+static struct nes_cm_listener *find_listener(struct nes_cm_core *cm_core,
+					     nes_addr_t dst_addr, u16 dst_port,
+					     enum nes_cm_listener_state listener_state)
+{
+	unsigned long flags;
+	struct nes_cm_listener *listen_node;
+	nes_addr_t listen_addr;
+	u16 listen_port;
+
+	/* walk list and find cm_node associated with this session ID */
+	spin_lock_irqsave(&cm_core->listen_list_lock, flags);
+	list_for_each_entry(listen_node, &cm_core->listen_list.list, list) {
+		listen_addr = listen_node->loc_addr;
+		listen_port = listen_node->loc_port;
+
+		/* compare node pair, return node handle if a match */
+		if (((listen_addr == dst_addr) ||
+		     listen_addr == 0x00000000) &&
+		    (listen_port == dst_port) &&
+		    (listener_state & listen_node->listener_state)) {
+			atomic_inc(&listen_node->ref_count);
+			spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
+			return listen_node;
+		}
+	}
+	spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
+
+	/* no listener */
+	return NULL;
+}
+
+/**
+ * add_hte_node - add a cm node to the hash table
+ */
+static int add_hte_node(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node)
+{
+	unsigned long flags;
+	struct list_head *hte;
+
+	if (!cm_node || !cm_core)
+		return -EINVAL;
+
+	nes_debug(NES_DBG_CM, "Adding Node %p to Active Connection HT\n",
+		  cm_node);
+
+	spin_lock_irqsave(&cm_core->ht_lock, flags);
+
+	/* get a handle on the hash table element (list head for this slot) */
+	hte = &cm_core->connected_nodes;
+	list_add_tail(&cm_node->list, hte);
+	atomic_inc(&cm_core->ht_node_cnt);
+
+	spin_unlock_irqrestore(&cm_core->ht_lock, flags);
+
+	return 0;
+}
+
+
+/**
+ * mini_cm_dec_refcnt_listen
+ */
+static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core,
+				     struct nes_cm_listener *listener, int free_hanging_nodes)
+{
+	int ret = -EINVAL;
+	int err = 0;
+	unsigned long flags;
+	struct list_head *list_pos = NULL;
+	struct list_head *list_temp = NULL;
+	struct nes_cm_node *cm_node = NULL;
+	struct list_head reset_list;
+
+	nes_debug(NES_DBG_CM, "attempting listener= %p free_nodes= %d, "
+		  "refcnt=%d\n", listener, free_hanging_nodes,
+		  atomic_read(&listener->ref_count));
+	/* free non-accelerated child nodes for this listener */
+	INIT_LIST_HEAD(&reset_list);
+	if (free_hanging_nodes) {
+		spin_lock_irqsave(&cm_core->ht_lock, flags);
+		list_for_each_safe(list_pos, list_temp,
+				   &g_cm_core->connected_nodes) {
+			cm_node = container_of(list_pos, struct nes_cm_node,
+					       list);
+			if ((cm_node->listener == listener) &&
+			    (!cm_node->accelerated)) {
+				add_ref_cm_node(cm_node);
+				list_add(&cm_node->reset_entry, &reset_list);
+			}
+		}
+		spin_unlock_irqrestore(&cm_core->ht_lock, flags);
+	}
+
+	list_for_each_safe(list_pos, list_temp, &reset_list) {
+		cm_node = container_of(list_pos, struct nes_cm_node,
+				       reset_entry);
+		{
+			struct nes_cm_node *loopback = cm_node->loopbackpartner;
+			enum nes_cm_node_state old_state;
+			if (NES_CM_STATE_FIN_WAIT1 <= cm_node->state) {
+				rem_ref_cm_node(cm_node->cm_core, cm_node);
+			} else {
+				if (!loopback) {
+					cleanup_retrans_entry(cm_node);
+					err = send_reset(cm_node, NULL);
+					if (err) {
+						cm_node->state =
+							NES_CM_STATE_CLOSED;
+						WARN_ON(1);
+					} else {
+						old_state = cm_node->state;
+						cm_node->state = NES_CM_STATE_LISTENER_DESTROYED;
+						if (old_state != NES_CM_STATE_MPAREQ_RCVD)
+							rem_ref_cm_node(
+								cm_node->cm_core,
+								cm_node);
+					}
+				} else {
+					struct nes_cm_event event;
+
+					event.cm_node = loopback;
+					event.cm_info.rem_addr =
+							loopback->rem_addr;
+					event.cm_info.loc_addr =
+							loopback->loc_addr;
+					event.cm_info.rem_port =
+							loopback->rem_port;
+					event.cm_info.loc_port =
+							 loopback->loc_port;
+					event.cm_info.cm_id = loopback->cm_id;
+					add_ref_cm_node(loopback);
+					loopback->state = NES_CM_STATE_CLOSED;
+					cm_event_connect_error(&event);
+					cm_node->state = NES_CM_STATE_LISTENER_DESTROYED;
+
+					rem_ref_cm_node(cm_node->cm_core,
+							 cm_node);
+
+				}
+			}
+		}
+	}
+
+	spin_lock_irqsave(&cm_core->listen_list_lock, flags);
+	if (!atomic_dec_return(&listener->ref_count)) {
+		list_del(&listener->list);
+
+		/* decrement our listen node count */
+		atomic_dec(&cm_core->listen_node_cnt);
+
+		spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
+
+		if (listener->nesvnic) {
+			nes_manage_apbvt(listener->nesvnic,
+				listener->loc_port,
+				PCI_FUNC(listener->nesvnic->nesdev->pcidev->devfn),
+				NES_MANAGE_APBVT_DEL);
+
+			nes_debug(NES_DBG_NLMSG,
+					"Delete APBVT loc_port = %04X\n",
+					listener->loc_port);
+		}
+
+		nes_debug(NES_DBG_CM, "destroying listener (%p)\n", listener);
+
+		kfree(listener);
+		listener = NULL;
+		ret = 0;
+		atomic_inc(&cm_listens_destroyed);
+	} else {
+		spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
+	}
+	if (listener) {
+		if (atomic_read(&listener->pend_accepts_cnt) > 0)
+			nes_debug(NES_DBG_CM, "destroying listener (%p)"
+				  " with non-zero pending accepts=%u\n",
+				  listener, atomic_read(&listener->pend_accepts_cnt));
+	}
+
+	return ret;
+}
+
+
+/**
+ * mini_cm_del_listen
+ */
+static int mini_cm_del_listen(struct nes_cm_core *cm_core,
+			      struct nes_cm_listener *listener)
+{
+	listener->listener_state = NES_CM_LISTENER_PASSIVE_STATE;
+	listener->cm_id = NULL; /* going to be destroyed pretty soon */
+	return mini_cm_dec_refcnt_listen(cm_core, listener, 1);
+}
+
+
+/**
+ * mini_cm_accelerated
+ */
+static inline int mini_cm_accelerated(struct nes_cm_core *cm_core,
+				      struct nes_cm_node *cm_node)
+{
+	cm_node->accelerated = true;
+
+	if (cm_node->accept_pend) {
+		BUG_ON(!cm_node->listener);
+		atomic_dec(&cm_node->listener->pend_accepts_cnt);
+		cm_node->accept_pend = 0;
+		BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0);
+	}
+
+	if (!timer_pending(&cm_core->tcp_timer))
+		mod_timer(&cm_core->tcp_timer, (jiffies + NES_SHORT_TIME));
+
+	return 0;
+}
+
+
+/**
+ * nes_addr_resolve_neigh
+ */
+static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpindex)
+{
+	struct rtable *rt;
+	struct neighbour *neigh;
+	int rc = arpindex;
+	struct nes_adapter *nesadapter = nesvnic->nesdev->nesadapter;
+	__be32 dst_ipaddr = htonl(dst_ip);
+
+	rt = ip_route_output(&init_net, dst_ipaddr, nesvnic->local_ipaddr, 0, 0);
+	if (IS_ERR(rt)) {
+		printk(KERN_ERR "%s: ip_route_output_key failed for 0x%08X\n",
+		       __func__, dst_ip);
+		return rc;
+	}
+
+	neigh = dst_neigh_lookup(&rt->dst, &dst_ipaddr);
+
+	rcu_read_lock();
+	if (neigh) {
+		if (neigh->nud_state & NUD_VALID) {
+			nes_debug(NES_DBG_CM, "Neighbor MAC address for 0x%08X"
+				  " is %pM, Gateway is 0x%08X \n", dst_ip,
+				  neigh->ha, ntohl(rt->rt_gateway));
+
+			if (arpindex >= 0) {
+				if (ether_addr_equal(nesadapter->arp_table[arpindex].mac_addr, neigh->ha)) {
+					/* Mac address same as in nes_arp_table */
+					goto out;
+				}
+
+				nes_manage_arp_cache(nesvnic->netdev,
+						     nesadapter->arp_table[arpindex].mac_addr,
+						     dst_ip, NES_ARP_DELETE);
+			}
+
+			nes_manage_arp_cache(nesvnic->netdev, neigh->ha,
+					     dst_ip, NES_ARP_ADD);
+			rc = nes_arp_table(nesvnic->nesdev, dst_ip, NULL,
+					   NES_ARP_RESOLVE);
+		} else {
+			neigh_event_send(neigh, NULL);
+		}
+	}
+out:
+	rcu_read_unlock();
+
+	if (neigh)
+		neigh_release(neigh);
+
+	ip_rt_put(rt);
+	return rc;
+}
+
+/**
+ * make_cm_node - create a new instance of a cm node
+ */
+static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core,
+					struct nes_vnic *nesvnic, struct nes_cm_info *cm_info,
+					struct nes_cm_listener *listener)
+{
+	struct nes_cm_node *cm_node;
+	int oldarpindex = 0;
+	int arpindex = 0;
+	struct nes_device *nesdev;
+	struct nes_adapter *nesadapter;
+
+	/* create an hte and cm_node for this instance */
+	cm_node = kzalloc(sizeof(*cm_node), GFP_ATOMIC);
+	if (!cm_node)
+		return NULL;
+
+	/* set our node specific transport info */
+	if (listener) {
+		cm_node->loc_addr = listener->loc_addr;
+		cm_node->loc_port = listener->loc_port;
+	} else {
+		cm_node->loc_addr = cm_info->loc_addr;
+		cm_node->loc_port = cm_info->loc_port;
+	}
+	cm_node->rem_addr = cm_info->rem_addr;
+	cm_node->rem_port = cm_info->rem_port;
+
+	cm_node->mpa_frame_rev = mpa_version;
+	cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO;
+	cm_node->mpav2_ird_ord = 0;
+	cm_node->ird_size = 0;
+	cm_node->ord_size = 0;
+
+	nes_debug(NES_DBG_CM, "Make node addresses : loc = %pI4:%x, rem = %pI4:%x\n",
+		  &cm_node->loc_addr, cm_node->loc_port,
+		  &cm_node->rem_addr, cm_node->rem_port);
+	cm_node->listener = listener;
+	if (listener)
+		cm_node->tos = listener->tos;
+	cm_node->netdev = nesvnic->netdev;
+	cm_node->cm_id = cm_info->cm_id;
+	memcpy(cm_node->loc_mac, nesvnic->netdev->dev_addr, ETH_ALEN);
+
+	nes_debug(NES_DBG_CM, "listener=%p, cm_id=%p\n", cm_node->listener,
+		  cm_node->cm_id);
+
+	spin_lock_init(&cm_node->retrans_list_lock);
+
+	cm_node->loopbackpartner = NULL;
+	atomic_set(&cm_node->ref_count, 1);
+	/* associate our parent CM core */
+	cm_node->cm_core = cm_core;
+	cm_node->tcp_cntxt.loc_id = NES_CM_DEF_LOCAL_ID;
+	cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE;
+	cm_node->tcp_cntxt.rcv_wnd = NES_CM_DEFAULT_RCV_WND_SCALED >>
+				     NES_CM_DEFAULT_RCV_WND_SCALE;
+	cm_node->tcp_cntxt.loc_seq_num = secure_tcp_seq(htonl(cm_node->loc_addr),
+							htonl(cm_node->rem_addr),
+							htons(cm_node->loc_port),
+							htons(cm_node->rem_port));
+	cm_node->tcp_cntxt.mss = nesvnic->max_frame_size - sizeof(struct iphdr) -
+				 sizeof(struct tcphdr) - ETH_HLEN - VLAN_HLEN;
+	cm_node->tcp_cntxt.rcv_nxt = 0;
+	/* get a unique session ID , add thread_id to an upcounter to handle race */
+	atomic_inc(&cm_core->node_cnt);
+	cm_node->conn_type = cm_info->conn_type;
+	cm_node->apbvt_set = 0;
+	cm_node->accept_pend = 0;
+
+	cm_node->nesvnic = nesvnic;
+	/* get some device handles, for arp lookup */
+	nesdev = nesvnic->nesdev;
+	nesadapter = nesdev->nesadapter;
+
+	cm_node->loopbackpartner = NULL;
+
+	/* get the mac addr for the remote node */
+	oldarpindex = nes_arp_table(nesdev, cm_node->rem_addr,
+				    NULL, NES_ARP_RESOLVE);
+	arpindex = nes_addr_resolve_neigh(nesvnic, cm_node->rem_addr,
+					  oldarpindex);
+	if (arpindex < 0) {
+		kfree(cm_node);
+		return NULL;
+	}
+
+	/* copy the mac addr to node context */
+	memcpy(cm_node->rem_mac, nesadapter->arp_table[arpindex].mac_addr, ETH_ALEN);
+	nes_debug(NES_DBG_CM, "Remote mac addr from arp table: %pM\n",
+		  cm_node->rem_mac);
+
+	add_hte_node(cm_core, cm_node);
+	atomic_inc(&cm_nodes_created);
+
+	return cm_node;
+}
+
+
+/**
+ * add_ref_cm_node - destroy an instance of a cm node
+ */
+static int add_ref_cm_node(struct nes_cm_node *cm_node)
+{
+	atomic_inc(&cm_node->ref_count);
+	return 0;
+}
+
+
+/**
+ * rem_ref_cm_node - destroy an instance of a cm node
+ */
+static int rem_ref_cm_node(struct nes_cm_core *cm_core,
+			   struct nes_cm_node *cm_node)
+{
+	unsigned long flags;
+	struct nes_qp *nesqp;
+
+	if (!cm_node)
+		return -EINVAL;
+
+	spin_lock_irqsave(&cm_node->cm_core->ht_lock, flags);
+	if (atomic_dec_return(&cm_node->ref_count)) {
+		spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags);
+		return 0;
+	}
+	list_del(&cm_node->list);
+	atomic_dec(&cm_core->ht_node_cnt);
+	spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags);
+
+	/* if the node is destroyed before connection was accelerated */
+	if (!cm_node->accelerated && cm_node->accept_pend) {
+		BUG_ON(!cm_node->listener);
+		atomic_dec(&cm_node->listener->pend_accepts_cnt);
+		BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0);
+	}
+	WARN_ON(cm_node->send_entry);
+	if (cm_node->recv_entry)
+		handle_recv_entry(cm_node, 0);
+	if (cm_node->listener) {
+		mini_cm_dec_refcnt_listen(cm_core, cm_node->listener, 0);
+	} else {
+		if (cm_node->apbvt_set && cm_node->nesvnic) {
+			nes_manage_apbvt(cm_node->nesvnic, cm_node->loc_port,
+					 PCI_FUNC(cm_node->nesvnic->nesdev->pcidev->devfn),
+					 NES_MANAGE_APBVT_DEL);
+		}
+		nes_debug(NES_DBG_NLMSG, "Delete APBVT loc_port = %04X\n",
+			  cm_node->loc_port);
+	}
+
+	atomic_dec(&cm_core->node_cnt);
+	atomic_inc(&cm_nodes_destroyed);
+	nesqp = cm_node->nesqp;
+	if (nesqp) {
+		nesqp->cm_node = NULL;
+		nes_rem_ref(&nesqp->ibqp);
+		cm_node->nesqp = NULL;
+	}
+
+	kfree(cm_node);
+	return 0;
+}
+
+/**
+ * process_options
+ */
+static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc,
+			   u32 optionsize, u32 syn_packet)
+{
+	u32 tmp;
+	u32 offset = 0;
+	union all_known_options *all_options;
+	char got_mss_option = 0;
+
+	while (offset < optionsize) {
+		all_options = (union all_known_options *)(optionsloc + offset);
+		switch (all_options->as_base.optionnum) {
+		case OPTION_NUMBER_END:
+			offset = optionsize;
+			break;
+		case OPTION_NUMBER_NONE:
+			offset += 1;
+			continue;
+		case OPTION_NUMBER_MSS:
+			nes_debug(NES_DBG_CM, "%s: MSS Length: %d Offset: %d "
+				  "Size: %d\n", __func__,
+				  all_options->as_mss.length, offset, optionsize);
+			got_mss_option = 1;
+			if (all_options->as_mss.length != 4) {
+				return 1;
+			} else {
+				tmp = ntohs(all_options->as_mss.mss);
+				if (tmp > 0 && tmp <
+				    cm_node->tcp_cntxt.mss)
+					cm_node->tcp_cntxt.mss = tmp;
+			}
+			break;
+		case OPTION_NUMBER_WINDOW_SCALE:
+			cm_node->tcp_cntxt.snd_wscale =
+				all_options->as_windowscale.shiftcount;
+			break;
+		default:
+			nes_debug(NES_DBG_CM, "TCP Option not understood: %x\n",
+				  all_options->as_base.optionnum);
+			break;
+		}
+		offset += all_options->as_base.length;
+	}
+	if ((!got_mss_option) && (syn_packet))
+		cm_node->tcp_cntxt.mss = NES_CM_DEFAULT_MSS;
+	return 0;
+}
+
+static void drop_packet(struct sk_buff *skb)
+{
+	atomic_inc(&cm_accel_dropped_pkts);
+	dev_kfree_skb_any(skb);
+}
+
+static void handle_fin_pkt(struct nes_cm_node *cm_node)
+{
+	nes_debug(NES_DBG_CM, "Received FIN, cm_node = %p, state = %u. "
+		  "refcnt=%d\n", cm_node, cm_node->state,
+		  atomic_read(&cm_node->ref_count));
+	switch (cm_node->state) {
+	case NES_CM_STATE_SYN_RCVD:
+	case NES_CM_STATE_SYN_SENT:
+	case NES_CM_STATE_ESTABLISHED:
+	case NES_CM_STATE_MPAREJ_RCVD:
+		cm_node->tcp_cntxt.rcv_nxt++;
+		cleanup_retrans_entry(cm_node);
+		cm_node->state = NES_CM_STATE_LAST_ACK;
+		send_fin(cm_node, NULL);
+		break;
+	case NES_CM_STATE_MPAREQ_SENT:
+		create_event(cm_node, NES_CM_EVENT_ABORTED);
+		cm_node->tcp_cntxt.rcv_nxt++;
+		cleanup_retrans_entry(cm_node);
+		cm_node->state = NES_CM_STATE_CLOSED;
+		add_ref_cm_node(cm_node);
+		send_reset(cm_node, NULL);
+		break;
+	case NES_CM_STATE_FIN_WAIT1:
+		cm_node->tcp_cntxt.rcv_nxt++;
+		cleanup_retrans_entry(cm_node);
+		cm_node->state = NES_CM_STATE_CLOSING;
+		send_ack(cm_node, NULL);
+		/* Wait for ACK as this is simultaneous close..
+		* After we receive ACK, do not send anything..
+		* Just rm the node.. Done.. */
+		break;
+	case NES_CM_STATE_FIN_WAIT2:
+		cm_node->tcp_cntxt.rcv_nxt++;
+		cleanup_retrans_entry(cm_node);
+		cm_node->state = NES_CM_STATE_TIME_WAIT;
+		send_ack(cm_node, NULL);
+		schedule_nes_timer(cm_node, NULL,  NES_TIMER_TYPE_CLOSE, 1, 0);
+		break;
+	case NES_CM_STATE_TIME_WAIT:
+		cm_node->tcp_cntxt.rcv_nxt++;
+		cleanup_retrans_entry(cm_node);
+		cm_node->state = NES_CM_STATE_CLOSED;
+		rem_ref_cm_node(cm_node->cm_core, cm_node);
+		break;
+	case NES_CM_STATE_TSA:
+	default:
+		nes_debug(NES_DBG_CM, "Error Rcvd FIN for node-%p state = %d\n",
+			cm_node, cm_node->state);
+		break;
+	}
+}
+
+
+static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
+	struct tcphdr *tcph)
+{
+
+	int	reset = 0;	/* whether to send reset in case of err.. */
+	atomic_inc(&cm_resets_recvd);
+	nes_debug(NES_DBG_CM, "Received Reset, cm_node = %p, state = %u."
+			" refcnt=%d\n", cm_node, cm_node->state,
+			atomic_read(&cm_node->ref_count));
+	cleanup_retrans_entry(cm_node);
+	switch (cm_node->state) {
+	case NES_CM_STATE_SYN_SENT:
+	case NES_CM_STATE_MPAREQ_SENT:
+		nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p "
+			"listener=%p state=%d\n", __func__, __LINE__, cm_node,
+			cm_node->listener, cm_node->state);
+		switch (cm_node->mpa_frame_rev) {
+		case IETF_MPA_V2:
+			cm_node->mpa_frame_rev = IETF_MPA_V1;
+			/* send a syn and goto syn sent state */
+			cm_node->state = NES_CM_STATE_SYN_SENT;
+			if (send_syn(cm_node, 0, NULL)) {
+				active_open_err(cm_node, skb, reset);
+			}
+			break;
+		case IETF_MPA_V1:
+		default:
+			active_open_err(cm_node, skb, reset);
+			break;
+		}
+		break;
+	case NES_CM_STATE_MPAREQ_RCVD:
+		atomic_inc(&cm_node->passive_state);
+		dev_kfree_skb_any(skb);
+		break;
+	case NES_CM_STATE_ESTABLISHED:
+	case NES_CM_STATE_SYN_RCVD:
+	case NES_CM_STATE_LISTENING:
+		nes_debug(NES_DBG_CM, "Bad state %s[%u]\n", __func__, __LINE__);
+		passive_open_err(cm_node, skb, reset);
+		break;
+	case NES_CM_STATE_TSA:
+		active_open_err(cm_node, skb, reset);
+		break;
+	case NES_CM_STATE_CLOSED:
+		drop_packet(skb);
+		break;
+	case NES_CM_STATE_FIN_WAIT2:
+	case NES_CM_STATE_FIN_WAIT1:
+	case NES_CM_STATE_LAST_ACK:
+		cm_node->cm_id->rem_ref(cm_node->cm_id);
+		/* fall through */
+	case NES_CM_STATE_TIME_WAIT:
+		cm_node->state = NES_CM_STATE_CLOSED;
+		rem_ref_cm_node(cm_node->cm_core, cm_node);
+		drop_packet(skb);
+		break;
+	default:
+		drop_packet(skb);
+		break;
+	}
+}
+
+
+static void handle_rcv_mpa(struct nes_cm_node *cm_node, struct sk_buff *skb)
+{
+	int ret = 0;
+	int datasize = skb->len;
+	u8 *dataloc = skb->data;
+
+	enum nes_cm_event_type type = NES_CM_EVENT_UNKNOWN;
+	u32 res_type;
+
+	ret = parse_mpa(cm_node, dataloc, &res_type, datasize);
+	if (ret) {
+		nes_debug(NES_DBG_CM, "didn't like MPA Request\n");
+		if (cm_node->state == NES_CM_STATE_MPAREQ_SENT) {
+			nes_debug(NES_DBG_CM, "%s[%u] create abort for "
+				  "cm_node=%p listener=%p state=%d\n", __func__,
+				  __LINE__, cm_node, cm_node->listener,
+				  cm_node->state);
+			active_open_err(cm_node, skb, 1);
+		} else {
+			passive_open_err(cm_node, skb, 1);
+		}
+		return;
+	}
+
+	switch (cm_node->state) {
+	case NES_CM_STATE_ESTABLISHED:
+		if (res_type == NES_MPA_REQUEST_REJECT)
+			/*BIG problem as we are receiving the MPA.. So should
+			 * not be REJECT.. This is Passive Open.. We can
+			 * only receive it Reject for Active Open...*/
+			WARN_ON(1);
+		cm_node->state = NES_CM_STATE_MPAREQ_RCVD;
+		type = NES_CM_EVENT_MPA_REQ;
+		atomic_set(&cm_node->passive_state,
+			   NES_PASSIVE_STATE_INDICATED);
+		break;
+	case NES_CM_STATE_MPAREQ_SENT:
+		cleanup_retrans_entry(cm_node);
+		if (res_type == NES_MPA_REQUEST_REJECT) {
+			type = NES_CM_EVENT_MPA_REJECT;
+			cm_node->state = NES_CM_STATE_MPAREJ_RCVD;
+		} else {
+			type = NES_CM_EVENT_CONNECTED;
+			cm_node->state = NES_CM_STATE_TSA;
+		}
+		send_ack(cm_node, NULL);
+		break;
+	default:
+		WARN_ON(1);
+		break;
+	}
+	dev_kfree_skb_any(skb);
+	create_event(cm_node, type);
+}
+
+static void indicate_pkt_err(struct nes_cm_node *cm_node, struct sk_buff *skb)
+{
+	switch (cm_node->state) {
+	case NES_CM_STATE_SYN_SENT:
+	case NES_CM_STATE_MPAREQ_SENT:
+		nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p "
+			  "listener=%p state=%d\n", __func__, __LINE__, cm_node,
+			  cm_node->listener, cm_node->state);
+		active_open_err(cm_node, skb, 1);
+		break;
+	case NES_CM_STATE_ESTABLISHED:
+	case NES_CM_STATE_SYN_RCVD:
+		passive_open_err(cm_node, skb, 1);
+		break;
+	case NES_CM_STATE_TSA:
+	default:
+		drop_packet(skb);
+	}
+}
+
+static int check_syn(struct nes_cm_node *cm_node, struct tcphdr *tcph,
+		     struct sk_buff *skb)
+{
+	int err;
+
+	err = ((ntohl(tcph->ack_seq) == cm_node->tcp_cntxt.loc_seq_num)) ? 0 : 1;
+	if (err)
+		active_open_err(cm_node, skb, 1);
+
+	return err;
+}
+
+static int check_seq(struct nes_cm_node *cm_node, struct tcphdr *tcph,
+		     struct sk_buff *skb)
+{
+	int err = 0;
+	u32 seq;
+	u32 ack_seq;
+	u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num;
+	u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt;
+	u32 rcv_wnd;
+
+	seq = ntohl(tcph->seq);
+	ack_seq = ntohl(tcph->ack_seq);
+	rcv_wnd = cm_node->tcp_cntxt.rcv_wnd;
+	if (ack_seq != loc_seq_num)
+		err = 1;
+	else if (!between(seq, rcv_nxt, (rcv_nxt + rcv_wnd)))
+		err = 1;
+	if (err) {
+		nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p "
+			  "listener=%p state=%d\n", __func__, __LINE__, cm_node,
+			  cm_node->listener, cm_node->state);
+		indicate_pkt_err(cm_node, skb);
+		nes_debug(NES_DBG_CM, "seq ERROR cm_node =%p seq=0x%08X "
+			  "rcv_nxt=0x%08X rcv_wnd=0x%x\n", cm_node, seq, rcv_nxt,
+			  rcv_wnd);
+	}
+	return err;
+}
+
+/*
+ * handle_syn_pkt() is for Passive node. The syn packet is received when a node
+ * is created with a listener or it may comein as rexmitted packet which in
+ * that case will be just dropped.
+ */
+static void handle_syn_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
+			   struct tcphdr *tcph)
+{
+	int ret;
+	u32 inc_sequence;
+	int optionsize;
+
+	optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
+	skb_trim(skb, 0);
+	inc_sequence = ntohl(tcph->seq);
+
+	switch (cm_node->state) {
+	case NES_CM_STATE_SYN_SENT:
+	case NES_CM_STATE_MPAREQ_SENT:
+		/* Rcvd syn on active open connection*/
+		active_open_err(cm_node, skb, 1);
+		break;
+	case NES_CM_STATE_LISTENING:
+		/* Passive OPEN */
+		if (atomic_read(&cm_node->listener->pend_accepts_cnt) >
+		    cm_node->listener->backlog) {
+			nes_debug(NES_DBG_CM, "drop syn due to backlog "
+				  "pressure \n");
+			cm_backlog_drops++;
+			passive_open_err(cm_node, skb, 0);
+			break;
+		}
+		ret = handle_tcp_options(cm_node, tcph, skb, optionsize,
+					 1);
+		if (ret) {
+			passive_open_err(cm_node, skb, 0);
+			/* drop pkt */
+			break;
+		}
+		cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
+		BUG_ON(cm_node->send_entry);
+		cm_node->accept_pend = 1;
+		atomic_inc(&cm_node->listener->pend_accepts_cnt);
+
+		cm_node->state = NES_CM_STATE_SYN_RCVD;
+		send_syn(cm_node, 1, skb);
+		break;
+	case NES_CM_STATE_CLOSED:
+		cleanup_retrans_entry(cm_node);
+		add_ref_cm_node(cm_node);
+		send_reset(cm_node, skb);
+		break;
+	case NES_CM_STATE_TSA:
+	case NES_CM_STATE_ESTABLISHED:
+	case NES_CM_STATE_FIN_WAIT1:
+	case NES_CM_STATE_FIN_WAIT2:
+	case NES_CM_STATE_MPAREQ_RCVD:
+	case NES_CM_STATE_LAST_ACK:
+	case NES_CM_STATE_CLOSING:
+	case NES_CM_STATE_UNKNOWN:
+	default:
+		drop_packet(skb);
+		break;
+	}
+}
+
+static void handle_synack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
+			      struct tcphdr *tcph)
+{
+	int ret;
+	u32 inc_sequence;
+	int optionsize;
+
+	optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
+	skb_trim(skb, 0);
+	inc_sequence = ntohl(tcph->seq);
+	switch (cm_node->state) {
+	case NES_CM_STATE_SYN_SENT:
+		cleanup_retrans_entry(cm_node);
+		/* active open */
+		if (check_syn(cm_node, tcph, skb))
+			return;
+		cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
+		/* setup options */
+		ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 0);
+		if (ret) {
+			nes_debug(NES_DBG_CM, "cm_node=%p tcp_options failed\n",
+				  cm_node);
+			break;
+		}
+		cleanup_retrans_entry(cm_node);
+		cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
+		send_mpa_request(cm_node, skb);
+		cm_node->state = NES_CM_STATE_MPAREQ_SENT;
+		break;
+	case NES_CM_STATE_MPAREQ_RCVD:
+		/* passive open, so should not be here */
+		passive_open_err(cm_node, skb, 1);
+		break;
+	case NES_CM_STATE_LISTENING:
+		cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
+		cleanup_retrans_entry(cm_node);
+		cm_node->state = NES_CM_STATE_CLOSED;
+		send_reset(cm_node, skb);
+		break;
+	case NES_CM_STATE_CLOSED:
+		cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
+		cleanup_retrans_entry(cm_node);
+		add_ref_cm_node(cm_node);
+		send_reset(cm_node, skb);
+		break;
+	case NES_CM_STATE_ESTABLISHED:
+	case NES_CM_STATE_FIN_WAIT1:
+	case NES_CM_STATE_FIN_WAIT2:
+	case NES_CM_STATE_LAST_ACK:
+	case NES_CM_STATE_TSA:
+	case NES_CM_STATE_CLOSING:
+	case NES_CM_STATE_UNKNOWN:
+	case NES_CM_STATE_MPAREQ_SENT:
+	default:
+		drop_packet(skb);
+		break;
+	}
+}
+
+static int handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
+			  struct tcphdr *tcph)
+{
+	int datasize = 0;
+	u32 inc_sequence;
+	int ret = 0;
+	int optionsize;
+
+	optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
+
+	if (check_seq(cm_node, tcph, skb))
+		return -EINVAL;
+
+	skb_pull(skb, tcph->doff << 2);
+	inc_sequence = ntohl(tcph->seq);
+	datasize = skb->len;
+	switch (cm_node->state) {
+	case NES_CM_STATE_SYN_RCVD:
+		/* Passive OPEN */
+		cleanup_retrans_entry(cm_node);
+		ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 1);
+		if (ret)
+			break;
+		cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
+		cm_node->state = NES_CM_STATE_ESTABLISHED;
+		if (datasize) {
+			cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
+			handle_rcv_mpa(cm_node, skb);
+		} else { /* rcvd ACK only */
+			dev_kfree_skb_any(skb);
+		}
+		break;
+	case NES_CM_STATE_ESTABLISHED:
+		/* Passive OPEN */
+		cleanup_retrans_entry(cm_node);
+		if (datasize) {
+			cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
+			handle_rcv_mpa(cm_node, skb);
+		} else {
+			drop_packet(skb);
+		}
+		break;
+	case NES_CM_STATE_MPAREQ_SENT:
+		cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
+		if (datasize) {
+			cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
+			handle_rcv_mpa(cm_node, skb);
+		} else { /* Could be just an ack pkt.. */
+			dev_kfree_skb_any(skb);
+		}
+		break;
+	case NES_CM_STATE_LISTENING:
+		cleanup_retrans_entry(cm_node);
+		cm_node->state = NES_CM_STATE_CLOSED;
+		send_reset(cm_node, skb);
+		break;
+	case NES_CM_STATE_CLOSED:
+		cleanup_retrans_entry(cm_node);
+		add_ref_cm_node(cm_node);
+		send_reset(cm_node, skb);
+		break;
+	case NES_CM_STATE_LAST_ACK:
+	case NES_CM_STATE_CLOSING:
+		cleanup_retrans_entry(cm_node);
+		cm_node->state = NES_CM_STATE_CLOSED;
+		cm_node->cm_id->rem_ref(cm_node->cm_id);
+		rem_ref_cm_node(cm_node->cm_core, cm_node);
+		drop_packet(skb);
+		break;
+	case NES_CM_STATE_FIN_WAIT1:
+		cleanup_retrans_entry(cm_node);
+		drop_packet(skb);
+		cm_node->state = NES_CM_STATE_FIN_WAIT2;
+		break;
+	case NES_CM_STATE_SYN_SENT:
+	case NES_CM_STATE_FIN_WAIT2:
+	case NES_CM_STATE_TSA:
+	case NES_CM_STATE_MPAREQ_RCVD:
+	case NES_CM_STATE_UNKNOWN:
+	default:
+		cleanup_retrans_entry(cm_node);
+		drop_packet(skb);
+		break;
+	}
+	return ret;
+}
+
+
+
+static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph,
+			      struct sk_buff *skb, int optionsize, int passive)
+{
+	u8 *optionsloc = (u8 *)&tcph[1];
+
+	if (optionsize) {
+		if (process_options(cm_node, optionsloc, optionsize,
+				    (u32)tcph->syn)) {
+			nes_debug(NES_DBG_CM, "%s: Node %p, Sending RESET\n",
+				  __func__, cm_node);
+			if (passive)
+				passive_open_err(cm_node, skb, 1);
+			else
+				active_open_err(cm_node, skb, 1);
+			return 1;
+		}
+	}
+
+	cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->window) <<
+				     cm_node->tcp_cntxt.snd_wscale;
+
+	if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd)
+		cm_node->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.snd_wnd;
+	return 0;
+}
+
+/*
+ * active_open_err() will send reset() if flag set..
+ * It will also send ABORT event.
+ */
+static void active_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb,
+			    int reset)
+{
+	cleanup_retrans_entry(cm_node);
+	if (reset) {
+		nes_debug(NES_DBG_CM, "ERROR active err called for cm_node=%p, "
+			  "state=%d\n", cm_node, cm_node->state);
+		add_ref_cm_node(cm_node);
+		send_reset(cm_node, skb);
+	} else {
+		dev_kfree_skb_any(skb);
+	}
+
+	cm_node->state = NES_CM_STATE_CLOSED;
+	create_event(cm_node, NES_CM_EVENT_ABORTED);
+}
+
+/*
+ * passive_open_err() will either do a reset() or will free up the skb and
+ * remove the cm_node.
+ */
+static void passive_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb,
+			     int reset)
+{
+	cleanup_retrans_entry(cm_node);
+	cm_node->state = NES_CM_STATE_CLOSED;
+	if (reset) {
+		nes_debug(NES_DBG_CM, "passive_open_err sending RST for "
+			  "cm_node=%p state =%d\n", cm_node, cm_node->state);
+		send_reset(cm_node, skb);
+	} else {
+		dev_kfree_skb_any(skb);
+		rem_ref_cm_node(cm_node->cm_core, cm_node);
+	}
+}
+
+/*
+ * free_retrans_entry() routines assumes that the retrans_list_lock has
+ * been acquired before calling.
+ */
+static void free_retrans_entry(struct nes_cm_node *cm_node)
+{
+	struct nes_timer_entry *send_entry;
+
+	send_entry = cm_node->send_entry;
+	if (send_entry) {
+		cm_node->send_entry = NULL;
+		dev_kfree_skb_any(send_entry->skb);
+		kfree(send_entry);
+		rem_ref_cm_node(cm_node->cm_core, cm_node);
+	}
+}
+
+static void cleanup_retrans_entry(struct nes_cm_node *cm_node)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
+	free_retrans_entry(cm_node);
+	spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
+}
+
+/**
+ * process_packet
+ * Returns skb if to be freed, else it will return NULL if already used..
+ */
+static void process_packet(struct nes_cm_node *cm_node, struct sk_buff *skb,
+			   struct nes_cm_core *cm_core)
+{
+	enum nes_tcpip_pkt_type pkt_type = NES_PKT_TYPE_UNKNOWN;
+	struct tcphdr *tcph = tcp_hdr(skb);
+	u32 fin_set = 0;
+	int ret = 0;
+
+	skb_pull(skb, ip_hdr(skb)->ihl << 2);
+
+	nes_debug(NES_DBG_CM, "process_packet: cm_node=%p state =%d syn=%d "
+		  "ack=%d rst=%d fin=%d\n", cm_node, cm_node->state, tcph->syn,
+		  tcph->ack, tcph->rst, tcph->fin);
+
+	if (tcph->rst) {
+		pkt_type = NES_PKT_TYPE_RST;
+	} else if (tcph->syn) {
+		pkt_type = NES_PKT_TYPE_SYN;
+		if (tcph->ack)
+			pkt_type = NES_PKT_TYPE_SYNACK;
+	} else if (tcph->ack) {
+		pkt_type = NES_PKT_TYPE_ACK;
+	}
+	if (tcph->fin)
+		fin_set = 1;
+
+	switch (pkt_type) {
+	case NES_PKT_TYPE_SYN:
+		handle_syn_pkt(cm_node, skb, tcph);
+		break;
+	case NES_PKT_TYPE_SYNACK:
+		handle_synack_pkt(cm_node, skb, tcph);
+		break;
+	case NES_PKT_TYPE_ACK:
+		ret = handle_ack_pkt(cm_node, skb, tcph);
+		if (fin_set && !ret)
+			handle_fin_pkt(cm_node);
+		break;
+	case NES_PKT_TYPE_RST:
+		handle_rst_pkt(cm_node, skb, tcph);
+		break;
+	default:
+		if ((fin_set) && (!check_seq(cm_node, tcph, skb)))
+			handle_fin_pkt(cm_node);
+		drop_packet(skb);
+		break;
+	}
+}
+
+/**
+ * mini_cm_listen - create a listen node with params
+ */
+static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *cm_core,
+			struct nes_vnic *nesvnic, struct nes_cm_info *cm_info)
+{
+	struct nes_cm_listener *listener;
+	unsigned long flags;
+
+	nes_debug(NES_DBG_CM, "Search for 0x%08x : 0x%04x\n",
+		  cm_info->loc_addr, cm_info->loc_port);
+
+	/* cannot have multiple matching listeners */
+	listener = find_listener(cm_core, cm_info->loc_addr, cm_info->loc_port,
+				NES_CM_LISTENER_EITHER_STATE);
+
+	if (listener && listener->listener_state == NES_CM_LISTENER_ACTIVE_STATE) {
+		/* find automatically incs ref count ??? */
+		atomic_dec(&listener->ref_count);
+		nes_debug(NES_DBG_CM, "Not creating listener since it already exists\n");
+		return NULL;
+	}
+
+	if (!listener) {
+		/* create a CM listen node (1/2 node to compare incoming traffic to) */
+		listener = kzalloc(sizeof(*listener), GFP_ATOMIC);
+		if (!listener)
+			return NULL;
+
+		listener->loc_addr = cm_info->loc_addr;
+		listener->loc_port = cm_info->loc_port;
+		listener->reused_node = 0;
+
+		atomic_set(&listener->ref_count, 1);
+	}
+	/* pasive case */
+	/* find already inc'ed the ref count */
+	else {
+		listener->reused_node = 1;
+	}
+
+	listener->cm_id = cm_info->cm_id;
+	atomic_set(&listener->pend_accepts_cnt, 0);
+	listener->cm_core = cm_core;
+	listener->nesvnic = nesvnic;
+	atomic_inc(&cm_core->node_cnt);
+
+	listener->conn_type = cm_info->conn_type;
+	listener->backlog = cm_info->backlog;
+	listener->listener_state = NES_CM_LISTENER_ACTIVE_STATE;
+
+	if (!listener->reused_node) {
+		spin_lock_irqsave(&cm_core->listen_list_lock, flags);
+		list_add(&listener->list, &cm_core->listen_list.list);
+		spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
+		atomic_inc(&cm_core->listen_node_cnt);
+	}
+
+	nes_debug(NES_DBG_CM, "Api - listen(): addr=0x%08X, port=0x%04x,"
+		  " listener = %p, backlog = %d, cm_id = %p.\n",
+		  cm_info->loc_addr, cm_info->loc_port,
+		  listener, listener->backlog, listener->cm_id);
+
+	return listener;
+}
+
+
+/**
+ * mini_cm_connect - make a connection node with params
+ */
+static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core,
+					   struct nes_vnic *nesvnic, u16 private_data_len,
+					   void *private_data, struct nes_cm_info *cm_info)
+{
+	int ret = 0;
+	struct nes_cm_node *cm_node;
+	struct nes_cm_listener *loopbackremotelistener;
+	struct nes_cm_node *loopbackremotenode;
+	struct nes_cm_info loopback_cm_info;
+	u8 *start_buff;
+
+	/* create a CM connection node */
+	cm_node = make_cm_node(cm_core, nesvnic, cm_info, NULL);
+	if (!cm_node)
+		return NULL;
+
+	/* set our node side to client (active) side */
+	cm_node->tcp_cntxt.client = 1;
+	cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE;
+
+	if (cm_info->loc_addr == cm_info->rem_addr) {
+		loopbackremotelistener = find_listener(cm_core,
+			cm_node->loc_addr, cm_node->rem_port,
+			NES_CM_LISTENER_ACTIVE_STATE);
+		if (loopbackremotelistener == NULL) {
+			create_event(cm_node, NES_CM_EVENT_ABORTED);
+		} else {
+			loopback_cm_info = *cm_info;
+			loopback_cm_info.loc_port = cm_info->rem_port;
+			loopback_cm_info.rem_port = cm_info->loc_port;
+			loopback_cm_info.loc_port =
+				cm_info->rem_port;
+			loopback_cm_info.rem_port =
+				cm_info->loc_port;
+			loopback_cm_info.cm_id = loopbackremotelistener->cm_id;
+			loopbackremotenode = make_cm_node(cm_core, nesvnic,
+							  &loopback_cm_info, loopbackremotelistener);
+			if (!loopbackremotenode) {
+				rem_ref_cm_node(cm_node->cm_core, cm_node);
+				return NULL;
+			}
+			atomic_inc(&cm_loopbacks);
+			loopbackremotenode->loopbackpartner = cm_node;
+			loopbackremotenode->tcp_cntxt.rcv_wscale =
+				NES_CM_DEFAULT_RCV_WND_SCALE;
+			cm_node->loopbackpartner = loopbackremotenode;
+			memcpy(loopbackremotenode->mpa_frame_buf, private_data,
+			       private_data_len);
+			loopbackremotenode->mpa_frame_size = private_data_len;
+
+			/* we are done handling this state. */
+			/* set node to a TSA state */
+			cm_node->state = NES_CM_STATE_TSA;
+			cm_node->tcp_cntxt.rcv_nxt =
+				loopbackremotenode->tcp_cntxt.loc_seq_num;
+			loopbackremotenode->tcp_cntxt.rcv_nxt =
+				cm_node->tcp_cntxt.loc_seq_num;
+			cm_node->tcp_cntxt.max_snd_wnd =
+				loopbackremotenode->tcp_cntxt.rcv_wnd;
+			loopbackremotenode->tcp_cntxt.max_snd_wnd =
+				cm_node->tcp_cntxt.rcv_wnd;
+			cm_node->tcp_cntxt.snd_wnd =
+				loopbackremotenode->tcp_cntxt.rcv_wnd;
+			loopbackremotenode->tcp_cntxt.snd_wnd =
+				cm_node->tcp_cntxt.rcv_wnd;
+			cm_node->tcp_cntxt.snd_wscale =
+				loopbackremotenode->tcp_cntxt.rcv_wscale;
+			loopbackremotenode->tcp_cntxt.snd_wscale =
+				cm_node->tcp_cntxt.rcv_wscale;
+			loopbackremotenode->state = NES_CM_STATE_MPAREQ_RCVD;
+			create_event(loopbackremotenode, NES_CM_EVENT_MPA_REQ);
+		}
+		return cm_node;
+	}
+
+	start_buff = &cm_node->mpa_frame_buf[0] + sizeof(struct ietf_mpa_v2);
+	cm_node->mpa_frame_size = private_data_len;
+
+	memcpy(start_buff, private_data, private_data_len);
+
+	/* send a syn and goto syn sent state */
+	cm_node->state = NES_CM_STATE_SYN_SENT;
+	ret = send_syn(cm_node, 0, NULL);
+
+	if (ret) {
+		/* error in sending the syn free up the cm_node struct */
+		nes_debug(NES_DBG_CM, "Api - connect() FAILED: dest "
+			  "addr=0x%08X, port=0x%04x, cm_node=%p, cm_id = %p.\n",
+			  cm_node->rem_addr, cm_node->rem_port, cm_node,
+			  cm_node->cm_id);
+		rem_ref_cm_node(cm_node->cm_core, cm_node);
+		cm_node = NULL;
+	}
+
+	if (cm_node) {
+		nes_debug(NES_DBG_CM, "Api - connect(): dest addr=0x%08X,"
+			  "port=0x%04x, cm_node=%p, cm_id = %p.\n",
+			  cm_node->rem_addr, cm_node->rem_port, cm_node,
+			  cm_node->cm_id);
+	}
+
+	return cm_node;
+}
+
+
+/**
+ * mini_cm_accept - accept a connection
+ * This function is never called
+ */
+static int mini_cm_accept(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node)
+{
+	return 0;
+}
+
+
+/**
+ * mini_cm_reject - reject and teardown a connection
+ */
+static int mini_cm_reject(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node)
+{
+	int ret = 0;
+	int err = 0;
+	int passive_state;
+	struct nes_cm_event event;
+	struct iw_cm_id *cm_id = cm_node->cm_id;
+	struct nes_cm_node *loopback = cm_node->loopbackpartner;
+
+	nes_debug(NES_DBG_CM, "%s cm_node=%p type=%d state=%d\n",
+		  __func__, cm_node, cm_node->tcp_cntxt.client, cm_node->state);
+
+	if (cm_node->tcp_cntxt.client)
+		return ret;
+	cleanup_retrans_entry(cm_node);
+
+	if (!loopback) {
+		passive_state = atomic_add_return(1, &cm_node->passive_state);
+		if (passive_state == NES_SEND_RESET_EVENT) {
+			cm_node->state = NES_CM_STATE_CLOSED;
+			rem_ref_cm_node(cm_core, cm_node);
+		} else {
+			if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) {
+				rem_ref_cm_node(cm_core, cm_node);
+			} else {
+				ret = send_mpa_reject(cm_node);
+				if (ret) {
+					cm_node->state = NES_CM_STATE_CLOSED;
+					err = send_reset(cm_node, NULL);
+					if (err)
+						WARN_ON(1);
+				} else {
+					cm_id->add_ref(cm_id);
+				}
+			}
+		}
+	} else {
+		cm_node->cm_id = NULL;
+		if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) {
+			rem_ref_cm_node(cm_core, cm_node);
+			rem_ref_cm_node(cm_core, loopback);
+		} else {
+			event.cm_node = loopback;
+			event.cm_info.rem_addr = loopback->rem_addr;
+			event.cm_info.loc_addr = loopback->loc_addr;
+			event.cm_info.rem_port = loopback->rem_port;
+			event.cm_info.loc_port = loopback->loc_port;
+			event.cm_info.cm_id = loopback->cm_id;
+			cm_event_mpa_reject(&event);
+			rem_ref_cm_node(cm_core, cm_node);
+			loopback->state = NES_CM_STATE_CLOSING;
+
+			cm_id = loopback->cm_id;
+			rem_ref_cm_node(cm_core, loopback);
+			cm_id->rem_ref(cm_id);
+		}
+	}
+
+	return ret;
+}
+
+
+/**
+ * mini_cm_close
+ */
+static int mini_cm_close(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node)
+{
+	int ret = 0;
+
+	if (!cm_core || !cm_node)
+		return -EINVAL;
+
+	switch (cm_node->state) {
+	case NES_CM_STATE_SYN_RCVD:
+	case NES_CM_STATE_SYN_SENT:
+	case NES_CM_STATE_ONE_SIDE_ESTABLISHED:
+	case NES_CM_STATE_ESTABLISHED:
+	case NES_CM_STATE_ACCEPTING:
+	case NES_CM_STATE_MPAREQ_SENT:
+	case NES_CM_STATE_MPAREQ_RCVD:
+		cleanup_retrans_entry(cm_node);
+		send_reset(cm_node, NULL);
+		break;
+	case NES_CM_STATE_CLOSE_WAIT:
+		cm_node->state = NES_CM_STATE_LAST_ACK;
+		send_fin(cm_node, NULL);
+		break;
+	case NES_CM_STATE_FIN_WAIT1:
+	case NES_CM_STATE_FIN_WAIT2:
+	case NES_CM_STATE_LAST_ACK:
+	case NES_CM_STATE_TIME_WAIT:
+	case NES_CM_STATE_CLOSING:
+		ret = -1;
+		break;
+	case NES_CM_STATE_LISTENING:
+		cleanup_retrans_entry(cm_node);
+		send_reset(cm_node, NULL);
+		break;
+	case NES_CM_STATE_MPAREJ_RCVD:
+	case NES_CM_STATE_UNKNOWN:
+	case NES_CM_STATE_INITED:
+	case NES_CM_STATE_CLOSED:
+	case NES_CM_STATE_LISTENER_DESTROYED:
+		ret = rem_ref_cm_node(cm_core, cm_node);
+		break;
+	case NES_CM_STATE_TSA:
+		if (cm_node->send_entry)
+			printk(KERN_ERR "ERROR Close got called from STATE_TSA "
+			       "send_entry=%p\n", cm_node->send_entry);
+		ret = rem_ref_cm_node(cm_core, cm_node);
+		break;
+	}
+	return ret;
+}
+
+
+/**
+ * recv_pkt - recv an ETHERNET packet, and process it through CM
+ * node state machine
+ */
+static int mini_cm_recv_pkt(struct nes_cm_core *cm_core,
+			    struct nes_vnic *nesvnic, struct sk_buff *skb)
+{
+	struct nes_cm_node *cm_node = NULL;
+	struct nes_cm_listener *listener = NULL;
+	struct iphdr *iph;
+	struct tcphdr *tcph;
+	struct nes_cm_info nfo;
+	int skb_handled = 1;
+	__be32 tmp_daddr, tmp_saddr;
+
+	if (!skb)
+		return 0;
+	if (skb->len < sizeof(struct iphdr) + sizeof(struct tcphdr))
+		return 0;
+
+	iph = (struct iphdr *)skb->data;
+	tcph = (struct tcphdr *)(skb->data + sizeof(struct iphdr));
+
+	nfo.loc_addr = ntohl(iph->daddr);
+	nfo.loc_port = ntohs(tcph->dest);
+	nfo.rem_addr = ntohl(iph->saddr);
+	nfo.rem_port = ntohs(tcph->source);
+
+	tmp_daddr = cpu_to_be32(iph->daddr);
+	tmp_saddr = cpu_to_be32(iph->saddr);
+
+	nes_debug(NES_DBG_CM, "Received packet: dest=%pI4:0x%04X src=%pI4:0x%04X\n",
+		  &tmp_daddr, tcph->dest, &tmp_saddr, tcph->source);
+
+	do {
+		cm_node = find_node(cm_core,
+				    nfo.rem_port, nfo.rem_addr,
+				    nfo.loc_port, nfo.loc_addr);
+
+		if (!cm_node) {
+			/* Only type of packet accepted are for */
+			/* the PASSIVE open (syn only) */
+			if ((!tcph->syn) || (tcph->ack)) {
+				skb_handled = 0;
+				break;
+			}
+			listener = find_listener(cm_core, nfo.loc_addr,
+						 nfo.loc_port,
+						 NES_CM_LISTENER_ACTIVE_STATE);
+			if (!listener) {
+				nfo.cm_id = NULL;
+				nfo.conn_type = 0;
+				nes_debug(NES_DBG_CM, "Unable to find listener for the pkt\n");
+				skb_handled = 0;
+				break;
+			}
+			nfo.cm_id = listener->cm_id;
+			nfo.conn_type = listener->conn_type;
+			cm_node = make_cm_node(cm_core, nesvnic, &nfo,
+					       listener);
+			if (!cm_node) {
+				nes_debug(NES_DBG_CM, "Unable to allocate "
+					  "node\n");
+				cm_packets_dropped++;
+				atomic_dec(&listener->ref_count);
+				dev_kfree_skb_any(skb);
+				break;
+			}
+			if (!tcph->rst && !tcph->fin) {
+				cm_node->state = NES_CM_STATE_LISTENING;
+			} else {
+				cm_packets_dropped++;
+				rem_ref_cm_node(cm_core, cm_node);
+				dev_kfree_skb_any(skb);
+				break;
+			}
+			add_ref_cm_node(cm_node);
+		} else if (cm_node->state == NES_CM_STATE_TSA) {
+			if (cm_node->nesqp->pau_mode)
+				nes_queue_mgt_skbs(skb, nesvnic, cm_node->nesqp);
+			else {
+				rem_ref_cm_node(cm_core, cm_node);
+				atomic_inc(&cm_accel_dropped_pkts);
+				dev_kfree_skb_any(skb);
+			}
+			break;
+		}
+		skb_reset_network_header(skb);
+		skb_set_transport_header(skb, sizeof(*tcph));
+		skb->len = ntohs(iph->tot_len);
+		process_packet(cm_node, skb, cm_core);
+		rem_ref_cm_node(cm_core, cm_node);
+	} while (0);
+	return skb_handled;
+}
+
+
+/**
+ * nes_cm_alloc_core - allocate a top level instance of a cm core
+ */
+static struct nes_cm_core *nes_cm_alloc_core(void)
+{
+	struct nes_cm_core *cm_core;
+
+	/* setup the CM core */
+	/* alloc top level core control structure */
+	cm_core = kzalloc(sizeof(*cm_core), GFP_KERNEL);
+	if (!cm_core)
+		return NULL;
+
+	INIT_LIST_HEAD(&cm_core->connected_nodes);
+	timer_setup(&cm_core->tcp_timer, nes_cm_timer_tick, 0);
+
+	cm_core->mtu = NES_CM_DEFAULT_MTU;
+	cm_core->state = NES_CM_STATE_INITED;
+	cm_core->free_tx_pkt_max = NES_CM_DEFAULT_FREE_PKTS;
+
+	atomic_set(&cm_core->events_posted, 0);
+
+	cm_core->api = &nes_cm_api;
+
+	spin_lock_init(&cm_core->ht_lock);
+	spin_lock_init(&cm_core->listen_list_lock);
+
+	INIT_LIST_HEAD(&cm_core->listen_list.list);
+
+	nes_debug(NES_DBG_CM, "Init CM Core completed -- cm_core=%p\n", cm_core);
+
+	nes_debug(NES_DBG_CM, "Enable QUEUE EVENTS\n");
+	cm_core->event_wq = alloc_ordered_workqueue("nesewq", 0);
+	if (!cm_core->event_wq)
+		goto out_free_cmcore;
+	cm_core->post_event = nes_cm_post_event;
+	nes_debug(NES_DBG_CM, "Enable QUEUE DISCONNECTS\n");
+	cm_core->disconn_wq = alloc_ordered_workqueue("nesdwq", 0);
+	if (!cm_core->disconn_wq)
+		goto out_free_wq;
+
+	print_core(cm_core);
+	return cm_core;
+
+out_free_wq:
+	destroy_workqueue(cm_core->event_wq);
+out_free_cmcore:
+	kfree(cm_core);
+	return NULL;
+}
+
+
+/**
+ * mini_cm_dealloc_core - deallocate a top level instance of a cm core
+ */
+static int mini_cm_dealloc_core(struct nes_cm_core *cm_core)
+{
+	nes_debug(NES_DBG_CM, "De-Alloc CM Core (%p)\n", cm_core);
+
+	if (!cm_core)
+		return -EINVAL;
+
+	barrier();
+
+	if (timer_pending(&cm_core->tcp_timer))
+		del_timer(&cm_core->tcp_timer);
+
+	destroy_workqueue(cm_core->event_wq);
+	destroy_workqueue(cm_core->disconn_wq);
+	nes_debug(NES_DBG_CM, "\n");
+	kfree(cm_core);
+
+	return 0;
+}
+
+
+/**
+ * mini_cm_get
+ */
+static int mini_cm_get(struct nes_cm_core *cm_core)
+{
+	return cm_core->state;
+}
+
+
+/**
+ * mini_cm_set
+ */
+static int mini_cm_set(struct nes_cm_core *cm_core, u32 type, u32 value)
+{
+	int ret = 0;
+
+	switch (type) {
+	case NES_CM_SET_PKT_SIZE:
+		cm_core->mtu = value;
+		break;
+	case NES_CM_SET_FREE_PKT_Q_SIZE:
+		cm_core->free_tx_pkt_max = value;
+		break;
+	default:
+		/* unknown set option */
+		ret = -EINVAL;
+	}
+
+	return ret;
+}
+
+
+/**
+ * nes_cm_init_tsa_conn setup HW; MPA frames must be
+ * successfully exchanged when this is called
+ */
+static int nes_cm_init_tsa_conn(struct nes_qp *nesqp, struct nes_cm_node *cm_node)
+{
+	int ret = 0;
+
+	if (!nesqp)
+		return -EINVAL;
+
+	nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_IPV4 |
+						  NES_QPCONTEXT_MISC_NO_NAGLE | NES_QPCONTEXT_MISC_DO_NOT_FRAG |
+						  NES_QPCONTEXT_MISC_DROS);
+
+	if (cm_node->tcp_cntxt.snd_wscale || cm_node->tcp_cntxt.rcv_wscale)
+		nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WSCALE);
+
+	nesqp->nesqp_context->misc2 |= cpu_to_le32(64 << NES_QPCONTEXT_MISC2_TTL_SHIFT);
+
+	nesqp->nesqp_context->misc2 |= cpu_to_le32(
+		cm_node->tos << NES_QPCONTEXT_MISC2_TOS_SHIFT);
+
+	nesqp->nesqp_context->mss |= cpu_to_le32(((u32)cm_node->tcp_cntxt.mss) << 16);
+
+	nesqp->nesqp_context->tcp_state_flow_label |= cpu_to_le32(
+		(u32)NES_QPCONTEXT_TCPSTATE_EST << NES_QPCONTEXT_TCPFLOW_TCP_STATE_SHIFT);
+
+	nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32(
+		(cm_node->tcp_cntxt.snd_wscale << NES_QPCONTEXT_PDWSCALE_SND_WSCALE_SHIFT) &
+		NES_QPCONTEXT_PDWSCALE_SND_WSCALE_MASK);
+
+	nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32(
+		(cm_node->tcp_cntxt.rcv_wscale << NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_SHIFT) &
+		NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_MASK);
+
+	nesqp->nesqp_context->keepalive = cpu_to_le32(0x80);
+	nesqp->nesqp_context->ts_recent = 0;
+	nesqp->nesqp_context->ts_age = 0;
+	nesqp->nesqp_context->snd_nxt = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num);
+	nesqp->nesqp_context->snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.snd_wnd);
+	nesqp->nesqp_context->rcv_nxt = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt);
+	nesqp->nesqp_context->rcv_wnd = cpu_to_le32(cm_node->tcp_cntxt.rcv_wnd <<
+						    cm_node->tcp_cntxt.rcv_wscale);
+	nesqp->nesqp_context->snd_max = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num);
+	nesqp->nesqp_context->snd_una = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num);
+	nesqp->nesqp_context->srtt = 0;
+	nesqp->nesqp_context->rttvar = cpu_to_le32(0x6);
+	nesqp->nesqp_context->ssthresh = cpu_to_le32(0x3FFFC000);
+	nesqp->nesqp_context->cwnd = cpu_to_le32(2 * cm_node->tcp_cntxt.mss);
+	nesqp->nesqp_context->snd_wl1 = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt);
+	nesqp->nesqp_context->snd_wl2 = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num);
+	nesqp->nesqp_context->max_snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.max_snd_wnd);
+
+	nes_debug(NES_DBG_CM, "QP%u: rcv_nxt = 0x%08X, snd_nxt = 0x%08X,"
+		  " Setting MSS to %u, PDWscale = 0x%08X, rcv_wnd = %u, context misc = 0x%08X.\n",
+		  nesqp->hwqp.qp_id, le32_to_cpu(nesqp->nesqp_context->rcv_nxt),
+		  le32_to_cpu(nesqp->nesqp_context->snd_nxt),
+		  cm_node->tcp_cntxt.mss, le32_to_cpu(nesqp->nesqp_context->pd_index_wscale),
+		  le32_to_cpu(nesqp->nesqp_context->rcv_wnd),
+		  le32_to_cpu(nesqp->nesqp_context->misc));
+	nes_debug(NES_DBG_CM, "  snd_wnd  = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->snd_wnd));
+	nes_debug(NES_DBG_CM, "  snd_cwnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->cwnd));
+	nes_debug(NES_DBG_CM, "  max_swnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->max_snd_wnd));
+
+	nes_debug(NES_DBG_CM, "Change cm_node state to TSA\n");
+	cm_node->state = NES_CM_STATE_TSA;
+
+	return ret;
+}
+
+
+/**
+ * nes_cm_disconn
+ */
+int nes_cm_disconn(struct nes_qp *nesqp)
+{
+	struct disconn_work *work;
+
+	work = kzalloc(sizeof *work, GFP_ATOMIC);
+	if (!work)
+		return -ENOMEM;  /* Timer will clean up */
+
+	nes_add_ref(&nesqp->ibqp);
+	work->nesqp = nesqp;
+	INIT_WORK(&work->work, nes_disconnect_worker);
+	queue_work(g_cm_core->disconn_wq, &work->work);
+	return 0;
+}
+
+
+/**
+ * nes_disconnect_worker
+ */
+static void nes_disconnect_worker(struct work_struct *work)
+{
+	struct disconn_work *dwork = container_of(work, struct disconn_work, work);
+	struct nes_qp *nesqp = dwork->nesqp;
+
+	kfree(dwork);
+	nes_debug(NES_DBG_CM, "processing AEQE id 0x%04X for QP%u.\n",
+		  nesqp->last_aeq, nesqp->hwqp.qp_id);
+	nes_cm_disconn_true(nesqp);
+	nes_rem_ref(&nesqp->ibqp);
+}
+
+
+/**
+ * nes_cm_disconn_true
+ */
+static int nes_cm_disconn_true(struct nes_qp *nesqp)
+{
+	unsigned long flags;
+	int ret = 0;
+	struct iw_cm_id *cm_id;
+	struct iw_cm_event cm_event;
+	struct nes_vnic *nesvnic;
+	u16 last_ae;
+	u8 original_hw_tcp_state;
+	u8 original_ibqp_state;
+	int disconn_status = 0;
+	int issue_disconn = 0;
+	int issue_close = 0;
+	int issue_flush = 0;
+	u32 flush_q = NES_CQP_FLUSH_RQ;
+	struct ib_event ibevent;
+
+	if (!nesqp) {
+		nes_debug(NES_DBG_CM, "disconnect_worker nesqp is NULL\n");
+		return -1;
+	}
+
+	spin_lock_irqsave(&nesqp->lock, flags);
+	cm_id = nesqp->cm_id;
+	/* make sure we havent already closed this connection */
+	if (!cm_id) {
+		nes_debug(NES_DBG_CM, "QP%u disconnect_worker cmid is NULL\n",
+			  nesqp->hwqp.qp_id);
+		spin_unlock_irqrestore(&nesqp->lock, flags);
+		return -1;
+	}
+
+	nesvnic = to_nesvnic(nesqp->ibqp.device);
+	nes_debug(NES_DBG_CM, "Disconnecting QP%u\n", nesqp->hwqp.qp_id);
+
+	original_hw_tcp_state = nesqp->hw_tcp_state;
+	original_ibqp_state = nesqp->ibqp_state;
+	last_ae = nesqp->last_aeq;
+
+	if (nesqp->term_flags) {
+		issue_disconn = 1;
+		issue_close = 1;
+		nesqp->cm_id = NULL;
+		del_timer(&nesqp->terminate_timer);
+		if (nesqp->flush_issued == 0) {
+			nesqp->flush_issued = 1;
+			issue_flush = 1;
+		}
+	} else if ((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSE_WAIT) ||
+			((original_ibqp_state == IB_QPS_RTS) &&
+			(last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) {
+		issue_disconn = 1;
+		if (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET)
+			disconn_status = -ECONNRESET;
+	}
+
+	if (((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSED) ||
+		 (original_hw_tcp_state == NES_AEQE_TCP_STATE_TIME_WAIT) ||
+		 (last_ae == NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) ||
+		 (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) {
+		issue_close = 1;
+		nesqp->cm_id = NULL;
+		if (nesqp->flush_issued == 0) {
+			nesqp->flush_issued = 1;
+			issue_flush = 1;
+		}
+	}
+
+	spin_unlock_irqrestore(&nesqp->lock, flags);
+
+	if ((issue_flush) && (nesqp->destroyed == 0)) {
+		/* Flush the queue(s) */
+		if (nesqp->hw_iwarp_state >= NES_AEQE_IWARP_STATE_TERMINATE)
+			flush_q |= NES_CQP_FLUSH_SQ;
+		flush_wqes(nesvnic->nesdev, nesqp, flush_q, 1);
+
+		if (nesqp->term_flags) {
+			ibevent.device = nesqp->ibqp.device;
+			ibevent.event = nesqp->terminate_eventtype;
+			ibevent.element.qp = &nesqp->ibqp;
+			if (nesqp->ibqp.event_handler)
+				nesqp->ibqp.event_handler(&ibevent, nesqp->ibqp.qp_context);
+		}
+	}
+
+	if ((cm_id) && (cm_id->event_handler)) {
+		if (issue_disconn) {
+			atomic_inc(&cm_disconnects);
+			cm_event.event = IW_CM_EVENT_DISCONNECT;
+			cm_event.status = disconn_status;
+			cm_event.local_addr = cm_id->m_local_addr;
+			cm_event.remote_addr = cm_id->m_remote_addr;
+			cm_event.private_data = NULL;
+			cm_event.private_data_len = 0;
+
+			nes_debug(NES_DBG_CM, "Generating a CM Disconnect Event"
+				  " for  QP%u, SQ Head = %u, SQ Tail = %u. "
+				  "cm_id = %p, refcount = %u.\n",
+				  nesqp->hwqp.qp_id, nesqp->hwqp.sq_head,
+				  nesqp->hwqp.sq_tail, cm_id,
+				  atomic_read(&nesqp->refcount));
+
+			ret = cm_id->event_handler(cm_id, &cm_event);
+			if (ret)
+				nes_debug(NES_DBG_CM, "OFA CM event_handler "
+					  "returned, ret=%d\n", ret);
+		}
+
+		if (issue_close) {
+			atomic_inc(&cm_closes);
+			nes_disconnect(nesqp, 1);
+
+			cm_id->provider_data = nesqp;
+			/* Send up the close complete event */
+			cm_event.event = IW_CM_EVENT_CLOSE;
+			cm_event.status = 0;
+			cm_event.provider_data = cm_id->provider_data;
+			cm_event.local_addr = cm_id->m_local_addr;
+			cm_event.remote_addr = cm_id->m_remote_addr;
+			cm_event.private_data = NULL;
+			cm_event.private_data_len = 0;
+
+			ret = cm_id->event_handler(cm_id, &cm_event);
+			if (ret)
+				nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret);
+
+			cm_id->rem_ref(cm_id);
+		}
+	}
+
+	return 0;
+}
+
+
+/**
+ * nes_disconnect
+ */
+static int nes_disconnect(struct nes_qp *nesqp, int abrupt)
+{
+	int ret = 0;
+	struct nes_vnic *nesvnic;
+	struct nes_device *nesdev;
+	struct nes_ib_device *nesibdev;
+
+	nesvnic = to_nesvnic(nesqp->ibqp.device);
+	if (!nesvnic)
+		return -EINVAL;
+
+	nesdev = nesvnic->nesdev;
+	nesibdev = nesvnic->nesibdev;
+
+	nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n",
+			netdev_refcnt_read(nesvnic->netdev));
+
+	if (nesqp->active_conn) {
+
+		/* indicate this connection is NOT active */
+		nesqp->active_conn = 0;
+	} else {
+		/* Need to free the Last Streaming Mode Message */
+		if (nesqp->ietf_frame) {
+			if (nesqp->lsmm_mr)
+				nesibdev->ibdev.dereg_mr(nesqp->lsmm_mr);
+			pci_free_consistent(nesdev->pcidev,
+					    nesqp->private_data_len + nesqp->ietf_frame_size,
+					    nesqp->ietf_frame, nesqp->ietf_frame_pbase);
+		}
+	}
+
+	/* close the CM node down if it is still active */
+	if (nesqp->cm_node) {
+		nes_debug(NES_DBG_CM, "Call close API\n");
+
+		g_cm_core->api->close(g_cm_core, nesqp->cm_node);
+	}
+
+	return ret;
+}
+
+
+/**
+ * nes_accept
+ */
+int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
+{
+	u64 u64temp;
+	struct ib_qp *ibqp;
+	struct nes_qp *nesqp;
+	struct nes_vnic *nesvnic;
+	struct nes_device *nesdev;
+	struct nes_cm_node *cm_node;
+	struct nes_adapter *adapter;
+	struct ib_qp_attr attr;
+	struct iw_cm_event cm_event;
+	struct nes_hw_qp_wqe *wqe;
+	struct nes_v4_quad nes_quad;
+	u32 crc_value;
+	int ret;
+	int passive_state;
+	struct ib_mr *ibmr = NULL;
+	struct nes_pd *nespd;
+	u64 tagged_offset;
+	u8 mpa_frame_offset = 0;
+	struct ietf_mpa_v2 *mpa_v2_frame;
+	u8 start_addr = 0;
+	u8 *start_ptr = &start_addr;
+	u8 **start_buff = &start_ptr;
+	u16 buff_len = 0;
+	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
+	struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->m_remote_addr;
+
+	ibqp = nes_get_qp(cm_id->device, conn_param->qpn);
+	if (!ibqp)
+		return -EINVAL;
+
+	/* get all our handles */
+	nesqp = to_nesqp(ibqp);
+	nesvnic = to_nesvnic(nesqp->ibqp.device);
+	nesdev = nesvnic->nesdev;
+	adapter = nesdev->nesadapter;
+
+	cm_node = (struct nes_cm_node *)cm_id->provider_data;
+	nes_debug(NES_DBG_CM, "nes_accept: cm_node= %p nesvnic=%p, netdev=%p,"
+		"%s\n", cm_node, nesvnic, nesvnic->netdev,
+		nesvnic->netdev->name);
+
+	if (NES_CM_STATE_LISTENER_DESTROYED == cm_node->state) {
+		if (cm_node->loopbackpartner)
+			rem_ref_cm_node(cm_node->cm_core, cm_node->loopbackpartner);
+		rem_ref_cm_node(cm_node->cm_core, cm_node);
+		return -EINVAL;
+	}
+
+	passive_state = atomic_add_return(1, &cm_node->passive_state);
+	if (passive_state == NES_SEND_RESET_EVENT) {
+		rem_ref_cm_node(cm_node->cm_core, cm_node);
+		return -ECONNRESET;
+	}
+	/* associate the node with the QP */
+	nesqp->cm_node = (void *)cm_node;
+	cm_node->nesqp = nesqp;
+
+
+	nes_debug(NES_DBG_CM, "QP%u, cm_node=%p, jiffies = %lu listener = %p\n",
+		nesqp->hwqp.qp_id, cm_node, jiffies, cm_node->listener);
+	atomic_inc(&cm_accepts);
+
+	nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n",
+			netdev_refcnt_read(nesvnic->netdev));
+
+	nesqp->ietf_frame_size = sizeof(struct ietf_mpa_v2);
+	/* allocate the ietf frame and space for private data */
+	nesqp->ietf_frame = pci_alloc_consistent(nesdev->pcidev,
+						 nesqp->ietf_frame_size + conn_param->private_data_len,
+						 &nesqp->ietf_frame_pbase);
+
+	if (!nesqp->ietf_frame) {
+		nes_debug(NES_DBG_CM, "Unable to allocate memory for private data\n");
+		return -ENOMEM;
+	}
+	mpa_v2_frame = (struct ietf_mpa_v2 *)nesqp->ietf_frame;
+
+	if (cm_node->mpa_frame_rev == IETF_MPA_V1)
+		mpa_frame_offset = 4;
+
+	if (cm_node->mpa_frame_rev == IETF_MPA_V1 ||
+			cm_node->mpav2_ird_ord == IETF_NO_IRD_ORD) {
+		record_ird_ord(cm_node, (u16)conn_param->ird, (u16)conn_param->ord);
+	}
+
+	memcpy(mpa_v2_frame->priv_data, conn_param->private_data,
+	       conn_param->private_data_len);
+
+	cm_build_mpa_frame(cm_node, start_buff, &buff_len, nesqp->ietf_frame, MPA_KEY_REPLY);
+	nesqp->private_data_len = conn_param->private_data_len;
+
+	/* setup our first outgoing iWarp send WQE (the IETF frame response) */
+	wqe = &nesqp->hwqp.sq_vbase[0];
+
+	if (raddr->sin_addr.s_addr != laddr->sin_addr.s_addr) {
+		u64temp = (unsigned long)nesqp;
+		nespd = nesqp->nespd;
+		tagged_offset = (u64)(unsigned long)*start_buff;
+		ibmr = nes_reg_phys_mr(&nespd->ibpd,
+				nesqp->ietf_frame_pbase + mpa_frame_offset,
+				buff_len, IB_ACCESS_LOCAL_WRITE,
+				&tagged_offset);
+		if (IS_ERR(ibmr)) {
+			nes_debug(NES_DBG_CM, "Unable to register memory region"
+				  "for lSMM for cm_node = %p \n",
+				  cm_node);
+			pci_free_consistent(nesdev->pcidev,
+					    nesqp->private_data_len + nesqp->ietf_frame_size,
+					    nesqp->ietf_frame, nesqp->ietf_frame_pbase);
+			return PTR_ERR(ibmr);
+		}
+
+		ibmr->pd = &nespd->ibpd;
+		ibmr->device = nespd->ibpd.device;
+		nesqp->lsmm_mr = ibmr;
+
+		u64temp |= NES_SW_CONTEXT_ALIGN >> 1;
+		set_wqe_64bit_value(wqe->wqe_words,
+				    NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX,
+				    u64temp);
+		wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] =
+			cpu_to_le32(NES_IWARP_SQ_WQE_STREAMING |
+				    NES_IWARP_SQ_WQE_WRPDU);
+		wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] =
+			cpu_to_le32(buff_len);
+		set_wqe_64bit_value(wqe->wqe_words,
+				    NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
+				    (u64)(unsigned long)(*start_buff));
+		wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] =
+			cpu_to_le32(buff_len);
+		wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = ibmr->lkey;
+		if (nesqp->sq_kmapped) {
+			nesqp->sq_kmapped = 0;
+			kunmap(nesqp->page);
+		}
+
+		nesqp->nesqp_context->ird_ord_sizes |=
+			cpu_to_le32(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT |
+				    NES_QPCONTEXT_ORDIRD_WRPDU);
+	} else {
+		nesqp->nesqp_context->ird_ord_sizes |=
+			cpu_to_le32(NES_QPCONTEXT_ORDIRD_WRPDU);
+	}
+	nesqp->skip_lsmm = 1;
+
+	/* Cache the cm_id in the qp */
+	nesqp->cm_id = cm_id;
+	cm_node->cm_id = cm_id;
+
+	/*  nesqp->cm_node = (void *)cm_id->provider_data; */
+	cm_id->provider_data = nesqp;
+	nesqp->active_conn = 0;
+
+	if (cm_node->state == NES_CM_STATE_TSA)
+		nes_debug(NES_DBG_CM, "Already state = TSA for cm_node=%p\n",
+			  cm_node);
+
+	nes_cm_init_tsa_conn(nesqp, cm_node);
+
+	nesqp->nesqp_context->tcpPorts[0] =
+				cpu_to_le16(cm_node->loc_port);
+	nesqp->nesqp_context->tcpPorts[1] =
+				cpu_to_le16(cm_node->rem_port);
+
+	nesqp->nesqp_context->ip0 = cpu_to_le32(cm_node->rem_addr);
+
+	nesqp->nesqp_context->misc2 |= cpu_to_le32(
+		(u32)PCI_FUNC(nesdev->pcidev->devfn) <<
+		NES_QPCONTEXT_MISC2_SRC_IP_SHIFT);
+
+	nesqp->nesqp_context->arp_index_vlan |=
+		cpu_to_le32(nes_arp_table(nesdev,
+					  le32_to_cpu(nesqp->nesqp_context->ip0), NULL,
+					  NES_ARP_RESOLVE) << 16);
+
+	nesqp->nesqp_context->ts_val_delta = cpu_to_le32(
+		jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW));
+
+	nesqp->nesqp_context->ird_index = cpu_to_le32(nesqp->hwqp.qp_id);
+
+	nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(
+		((u32)1 << NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT));
+	nesqp->nesqp_context->ird_ord_sizes |=
+		cpu_to_le32((u32)cm_node->ord_size);
+
+	memset(&nes_quad, 0, sizeof(nes_quad));
+	nes_quad.DstIpAdrIndex =
+		cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24);
+	nes_quad.SrcIpadr = htonl(cm_node->rem_addr);
+	nes_quad.TcpPorts[0] = htons(cm_node->rem_port);
+	nes_quad.TcpPorts[1] = htons(cm_node->loc_port);
+
+	/* Produce hash key */
+	crc_value = get_crc_value(&nes_quad);
+	nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff);
+	nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, CRC = 0x%08X\n",
+		  nesqp->hte_index, nesqp->hte_index & adapter->hte_index_mask);
+
+	nesqp->hte_index &= adapter->hte_index_mask;
+	nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index);
+
+	cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node);
+
+	nes_debug(NES_DBG_CM, "QP%u, Destination IP = 0x%08X:0x%04X, local = "
+		  "0x%08X:0x%04X, rcv_nxt=0x%08X, snd_nxt=0x%08X, mpa + "
+		  "private data length=%u.\n", nesqp->hwqp.qp_id,
+		  ntohl(raddr->sin_addr.s_addr), ntohs(raddr->sin_port),
+		  ntohl(laddr->sin_addr.s_addr), ntohs(laddr->sin_port),
+		  le32_to_cpu(nesqp->nesqp_context->rcv_nxt),
+		  le32_to_cpu(nesqp->nesqp_context->snd_nxt),
+		  buff_len);
+
+	/* notify OF layer that accept event was successful */
+	cm_id->add_ref(cm_id);
+	nes_add_ref(&nesqp->ibqp);
+
+	cm_event.event = IW_CM_EVENT_ESTABLISHED;
+	cm_event.status = 0;
+	cm_event.provider_data = (void *)nesqp;
+	cm_event.local_addr = cm_id->m_local_addr;
+	cm_event.remote_addr = cm_id->m_remote_addr;
+	cm_event.private_data = NULL;
+	cm_event.private_data_len = 0;
+	cm_event.ird = cm_node->ird_size;
+	cm_event.ord = cm_node->ord_size;
+
+	ret = cm_id->event_handler(cm_id, &cm_event);
+	attr.qp_state = IB_QPS_RTS;
+	nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
+	if (cm_node->loopbackpartner) {
+		cm_node->loopbackpartner->mpa_frame_size =
+			nesqp->private_data_len;
+		/* copy entire MPA frame to our cm_node's frame */
+		memcpy(cm_node->loopbackpartner->mpa_frame_buf,
+		       conn_param->private_data, conn_param->private_data_len);
+		create_event(cm_node->loopbackpartner, NES_CM_EVENT_CONNECTED);
+	}
+	if (ret)
+		printk(KERN_ERR "%s[%u] OFA CM event_handler returned, "
+		       "ret=%d\n", __func__, __LINE__, ret);
+
+	return 0;
+}
+
+
+/**
+ * nes_reject
+ */
+int nes_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
+{
+	struct nes_cm_node *cm_node;
+	struct nes_cm_node *loopback;
+	struct nes_cm_core *cm_core;
+	u8 *start_buff;
+
+	atomic_inc(&cm_rejects);
+	cm_node = (struct nes_cm_node *)cm_id->provider_data;
+	loopback = cm_node->loopbackpartner;
+	cm_core = cm_node->cm_core;
+	cm_node->cm_id = cm_id;
+
+	if (pdata_len + sizeof(struct ietf_mpa_v2) > MAX_CM_BUFFER)
+		return -EINVAL;
+
+	if (loopback) {
+		memcpy(&loopback->mpa_frame.priv_data, pdata, pdata_len);
+		loopback->mpa_frame.priv_data_len = pdata_len;
+		loopback->mpa_frame_size = pdata_len;
+	} else {
+		start_buff = &cm_node->mpa_frame_buf[0] + sizeof(struct ietf_mpa_v2);
+		cm_node->mpa_frame_size = pdata_len;
+		memcpy(start_buff, pdata, pdata_len);
+	}
+	return cm_core->api->reject(cm_core, cm_node);
+}
+
+
+/**
+ * nes_connect
+ * setup and launch cm connect node
+ */
+int nes_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
+{
+	struct ib_qp *ibqp;
+	struct nes_qp *nesqp;
+	struct nes_vnic *nesvnic;
+	struct nes_device *nesdev;
+	struct nes_cm_node *cm_node;
+	struct nes_cm_info cm_info;
+	int apbvt_set = 0;
+	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
+	struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->m_remote_addr;
+
+	if (cm_id->remote_addr.ss_family != AF_INET)
+		return -ENOSYS;
+	ibqp = nes_get_qp(cm_id->device, conn_param->qpn);
+	if (!ibqp)
+		return -EINVAL;
+	nesqp = to_nesqp(ibqp);
+	if (!nesqp)
+		return -EINVAL;
+	nesvnic = to_nesvnic(nesqp->ibqp.device);
+	if (!nesvnic)
+		return -EINVAL;
+	nesdev = nesvnic->nesdev;
+	if (!nesdev)
+		return -EINVAL;
+
+	if (!laddr->sin_port || !raddr->sin_port)
+		return -EINVAL;
+
+	nes_debug(NES_DBG_CM, "QP%u, current IP = 0x%08X, Destination IP = "
+		  "0x%08X:0x%04X, local = 0x%08X:0x%04X.\n", nesqp->hwqp.qp_id,
+		  ntohl(nesvnic->local_ipaddr), ntohl(raddr->sin_addr.s_addr),
+		  ntohs(raddr->sin_port), ntohl(laddr->sin_addr.s_addr),
+		  ntohs(laddr->sin_port));
+
+	atomic_inc(&cm_connects);
+	nesqp->active_conn = 1;
+
+	/* cache the cm_id in the qp */
+	nesqp->cm_id = cm_id;
+	cm_id->provider_data = nesqp;
+	nesqp->private_data_len = conn_param->private_data_len;
+
+	nes_debug(NES_DBG_CM, "requested ord = 0x%08X.\n", (u32)conn_param->ord);
+	nes_debug(NES_DBG_CM, "mpa private data len =%u\n",
+		  conn_param->private_data_len);
+
+	/* set up the connection params for the node */
+	cm_info.loc_addr = ntohl(laddr->sin_addr.s_addr);
+	cm_info.loc_port = ntohs(laddr->sin_port);
+	cm_info.rem_addr = ntohl(raddr->sin_addr.s_addr);
+	cm_info.rem_port = ntohs(raddr->sin_port);
+	cm_info.cm_id = cm_id;
+	cm_info.conn_type = NES_CM_IWARP_CONN_TYPE;
+
+	if (laddr->sin_addr.s_addr != raddr->sin_addr.s_addr) {
+		nes_manage_apbvt(nesvnic, cm_info.loc_port,
+				 PCI_FUNC(nesdev->pcidev->devfn),
+				 NES_MANAGE_APBVT_ADD);
+		apbvt_set = 1;
+	}
+
+	cm_id->add_ref(cm_id);
+
+	/* create a connect CM node connection */
+	cm_node = g_cm_core->api->connect(g_cm_core, nesvnic,
+					  conn_param->private_data_len, (void *)conn_param->private_data,
+					  &cm_info);
+	if (!cm_node) {
+		if (apbvt_set)
+			nes_manage_apbvt(nesvnic, cm_info.loc_port,
+					 PCI_FUNC(nesdev->pcidev->devfn),
+					 NES_MANAGE_APBVT_DEL);
+
+		nes_debug(NES_DBG_NLMSG, "Delete loc_port = %04X\n",
+			  cm_info.loc_port);
+		cm_id->rem_ref(cm_id);
+		return -ENOMEM;
+	}
+
+	record_ird_ord(cm_node, (u16)conn_param->ird, (u16)conn_param->ord);
+	if (cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO &&
+				cm_node->ord_size == 0)
+		cm_node->ord_size = 1;
+
+	cm_node->apbvt_set = apbvt_set;
+	cm_node->tos = cm_id->tos;
+	nesqp->cm_node = cm_node;
+	cm_node->nesqp = nesqp;
+	nes_add_ref(&nesqp->ibqp);
+
+	return 0;
+}
+
+
+/**
+ * nes_create_listen
+ */
+int nes_create_listen(struct iw_cm_id *cm_id, int backlog)
+{
+	struct nes_vnic *nesvnic;
+	struct nes_cm_listener *cm_node;
+	struct nes_cm_info cm_info;
+	int err;
+	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
+
+	nes_debug(NES_DBG_CM, "cm_id = %p, local port = 0x%04X.\n",
+		  cm_id, ntohs(laddr->sin_port));
+
+	if (cm_id->m_local_addr.ss_family != AF_INET)
+		return -ENOSYS;
+	nesvnic = to_nesvnic(cm_id->device);
+	if (!nesvnic)
+		return -EINVAL;
+
+	nes_debug(NES_DBG_CM, "nesvnic=%p, netdev=%p, %s\n",
+			nesvnic, nesvnic->netdev, nesvnic->netdev->name);
+
+	nes_debug(NES_DBG_CM, "nesvnic->local_ipaddr=0x%08x, sin_addr.s_addr=0x%08x\n",
+			nesvnic->local_ipaddr, laddr->sin_addr.s_addr);
+
+	/* setup listen params in our api call struct */
+	cm_info.loc_addr = ntohl(nesvnic->local_ipaddr);
+	cm_info.loc_port = ntohs(laddr->sin_port);
+	cm_info.backlog = backlog;
+	cm_info.cm_id = cm_id;
+
+	cm_info.conn_type = NES_CM_IWARP_CONN_TYPE;
+
+	cm_node = g_cm_core->api->listen(g_cm_core, nesvnic, &cm_info);
+	if (!cm_node) {
+		printk(KERN_ERR "%s[%u] Error returned from listen API call\n",
+		       __func__, __LINE__);
+		return -ENOMEM;
+	}
+
+	cm_id->provider_data = cm_node;
+	cm_node->tos = cm_id->tos;
+
+	if (!cm_node->reused_node) {
+		err = nes_manage_apbvt(nesvnic, cm_node->loc_port,
+				       PCI_FUNC(nesvnic->nesdev->pcidev->devfn),
+				       NES_MANAGE_APBVT_ADD);
+		if (err) {
+			printk(KERN_ERR "nes_manage_apbvt call returned %d.\n",
+			       err);
+			g_cm_core->api->stop_listener(g_cm_core, (void *)cm_node);
+			return err;
+		}
+		atomic_inc(&cm_listens_created);
+	}
+
+	cm_id->add_ref(cm_id);
+	cm_id->provider_data = (void *)cm_node;
+
+
+	return 0;
+}
+
+
+/**
+ * nes_destroy_listen
+ */
+int nes_destroy_listen(struct iw_cm_id *cm_id)
+{
+	if (cm_id->provider_data)
+		g_cm_core->api->stop_listener(g_cm_core, cm_id->provider_data);
+	else
+		nes_debug(NES_DBG_CM, "cm_id->provider_data was NULL\n");
+
+	cm_id->rem_ref(cm_id);
+
+	return 0;
+}
+
+
+/**
+ * nes_cm_recv
+ */
+int nes_cm_recv(struct sk_buff *skb, struct net_device *netdevice)
+{
+	int rc = 0;
+
+	cm_packets_received++;
+	if ((g_cm_core) && (g_cm_core->api))
+		rc = g_cm_core->api->recv_pkt(g_cm_core, netdev_priv(netdevice), skb);
+	else
+		nes_debug(NES_DBG_CM, "Unable to process packet for CM,"
+			  " cm is not setup properly.\n");
+
+	return rc;
+}
+
+
+/**
+ * nes_cm_start
+ * Start and init a cm core module
+ */
+int nes_cm_start(void)
+{
+	nes_debug(NES_DBG_CM, "\n");
+	/* create the primary CM core, pass this handle to subsequent core inits */
+	g_cm_core = nes_cm_alloc_core();
+	if (g_cm_core)
+		return 0;
+	else
+		return -ENOMEM;
+}
+
+
+/**
+ * nes_cm_stop
+ * stop and dealloc all cm core instances
+ */
+int nes_cm_stop(void)
+{
+	g_cm_core->api->destroy_cm_core(g_cm_core);
+	return 0;
+}
+
+
+/**
+ * cm_event_connected
+ * handle a connected event, setup QPs and HW
+ */
+static void cm_event_connected(struct nes_cm_event *event)
+{
+	struct nes_qp *nesqp;
+	struct nes_vnic *nesvnic;
+	struct nes_device *nesdev;
+	struct nes_cm_node *cm_node;
+	struct nes_adapter *nesadapter;
+	struct ib_qp_attr attr;
+	struct iw_cm_id *cm_id;
+	struct iw_cm_event cm_event;
+	struct nes_v4_quad nes_quad;
+	u32 crc_value;
+	int ret;
+	struct sockaddr_in *laddr;
+	struct sockaddr_in *raddr;
+	struct sockaddr_in *cm_event_laddr;
+
+	/* get all our handles */
+	cm_node = event->cm_node;
+	cm_id = cm_node->cm_id;
+	nes_debug(NES_DBG_CM, "cm_event_connected - %p - cm_id = %p\n", cm_node, cm_id);
+	nesqp = (struct nes_qp *)cm_id->provider_data;
+	nesvnic = to_nesvnic(nesqp->ibqp.device);
+	nesdev = nesvnic->nesdev;
+	nesadapter = nesdev->nesadapter;
+	laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
+	raddr = (struct sockaddr_in *)&cm_id->m_remote_addr;
+	cm_event_laddr = (struct sockaddr_in *)&cm_event.local_addr;
+
+	if (nesqp->destroyed)
+		return;
+	atomic_inc(&cm_connecteds);
+	nes_debug(NES_DBG_CM, "QP%u attempting to connect to  0x%08X:0x%04X on"
+		  " local port 0x%04X. jiffies = %lu.\n",
+		  nesqp->hwqp.qp_id, ntohl(raddr->sin_addr.s_addr),
+		  ntohs(raddr->sin_port), ntohs(laddr->sin_port), jiffies);
+
+	nes_cm_init_tsa_conn(nesqp, cm_node);
+
+	/* set the QP tsa context */
+	nesqp->nesqp_context->tcpPorts[0] =
+			cpu_to_le16(cm_node->loc_port);
+	nesqp->nesqp_context->tcpPorts[1] =
+			cpu_to_le16(cm_node->rem_port);
+	nesqp->nesqp_context->ip0 = cpu_to_le32(cm_node->rem_addr);
+
+	nesqp->nesqp_context->misc2 |= cpu_to_le32(
+			(u32)PCI_FUNC(nesdev->pcidev->devfn) <<
+			NES_QPCONTEXT_MISC2_SRC_IP_SHIFT);
+	nesqp->nesqp_context->arp_index_vlan |= cpu_to_le32(
+			nes_arp_table(nesdev,
+			le32_to_cpu(nesqp->nesqp_context->ip0),
+			NULL, NES_ARP_RESOLVE) << 16);
+	nesqp->nesqp_context->ts_val_delta = cpu_to_le32(
+			jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW));
+	nesqp->nesqp_context->ird_index = cpu_to_le32(nesqp->hwqp.qp_id);
+	nesqp->nesqp_context->ird_ord_sizes |=
+			cpu_to_le32((u32)1 <<
+			NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT);
+	nesqp->nesqp_context->ird_ord_sizes |=
+			cpu_to_le32((u32)cm_node->ord_size);
+
+	/* Adjust tail for not having a LSMM */
+	/*nesqp->hwqp.sq_tail = 1;*/
+
+	build_rdma0_msg(cm_node, &nesqp);
+
+	nes_write32(nesdev->regs + NES_WQE_ALLOC,
+		    (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
+
+	memset(&nes_quad, 0, sizeof(nes_quad));
+
+	nes_quad.DstIpAdrIndex =
+		cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24);
+	nes_quad.SrcIpadr = htonl(cm_node->rem_addr);
+	nes_quad.TcpPorts[0] = htons(cm_node->rem_port);
+	nes_quad.TcpPorts[1] = htons(cm_node->loc_port);
+
+	/* Produce hash key */
+	crc_value = get_crc_value(&nes_quad);
+	nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff);
+	nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, After CRC = 0x%08X\n",
+		  nesqp->hte_index, nesqp->hte_index & nesadapter->hte_index_mask);
+
+	nesqp->hte_index &= nesadapter->hte_index_mask;
+	nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index);
+
+	nesqp->ietf_frame = &cm_node->mpa_frame;
+	nesqp->private_data_len = (u8)cm_node->mpa_frame_size;
+	cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node);
+
+	/* notify OF layer we successfully created the requested connection */
+	cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
+	cm_event.status = 0;
+	cm_event.provider_data = cm_id->provider_data;
+	cm_event_laddr->sin_family = AF_INET;
+	cm_event_laddr->sin_port = laddr->sin_port;
+	cm_event.remote_addr = cm_id->m_remote_addr;
+
+	cm_event.private_data = (void *)event->cm_node->mpa_frame_buf;
+	cm_event.private_data_len = (u8)event->cm_node->mpa_frame_size;
+	cm_event.ird = cm_node->ird_size;
+	cm_event.ord = cm_node->ord_size;
+
+	cm_event_laddr->sin_addr.s_addr = htonl(event->cm_info.loc_addr);
+	ret = cm_id->event_handler(cm_id, &cm_event);
+	nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret);
+
+	if (ret)
+		printk(KERN_ERR "%s[%u] OFA CM event_handler returned, "
+		       "ret=%d\n", __func__, __LINE__, ret);
+	attr.qp_state = IB_QPS_RTS;
+	nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
+
+	nes_debug(NES_DBG_CM, "Exiting connect thread for QP%u. jiffies = "
+		  "%lu\n", nesqp->hwqp.qp_id, jiffies);
+
+	return;
+}
+
+
+/**
+ * cm_event_connect_error
+ */
+static void cm_event_connect_error(struct nes_cm_event *event)
+{
+	struct nes_qp *nesqp;
+	struct iw_cm_id *cm_id;
+	struct iw_cm_event cm_event;
+	/* struct nes_cm_info cm_info; */
+	int ret;
+
+	if (!event->cm_node)
+		return;
+
+	cm_id = event->cm_node->cm_id;
+	if (!cm_id)
+		return;
+
+	nes_debug(NES_DBG_CM, "cm_node=%p, cm_id=%p\n", event->cm_node, cm_id);
+	nesqp = cm_id->provider_data;
+
+	if (!nesqp)
+		return;
+
+	/* notify OF layer about this connection error event */
+	/* cm_id->rem_ref(cm_id); */
+	nesqp->cm_id = NULL;
+	cm_id->provider_data = NULL;
+	cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
+	cm_event.status = -ECONNRESET;
+	cm_event.provider_data = cm_id->provider_data;
+	cm_event.local_addr = cm_id->m_local_addr;
+	cm_event.remote_addr = cm_id->m_remote_addr;
+	cm_event.private_data = NULL;
+	cm_event.private_data_len = 0;
+
+#ifdef CONFIG_INFINIBAND_NES_DEBUG
+	{
+		struct sockaddr_in *cm_event_laddr = (struct sockaddr_in *)
+						     &cm_event.local_addr;
+		struct sockaddr_in *cm_event_raddr = (struct sockaddr_in *)
+						     &cm_event.remote_addr;
+		nes_debug(NES_DBG_CM, "call CM_EVENT REJECTED, local_addr=%08x, remote_addr=%08x\n",
+			  cm_event_laddr->sin_addr.s_addr, cm_event_raddr->sin_addr.s_addr);
+	}
+#endif
+
+	ret = cm_id->event_handler(cm_id, &cm_event);
+	nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret);
+	if (ret)
+		printk(KERN_ERR "%s[%u] OFA CM event_handler returned, "
+		       "ret=%d\n", __func__, __LINE__, ret);
+	cm_id->rem_ref(cm_id);
+
+	rem_ref_cm_node(event->cm_node->cm_core, event->cm_node);
+	return;
+}
+
+
+/**
+ * cm_event_reset
+ */
+static void cm_event_reset(struct nes_cm_event *event)
+{
+	struct nes_qp *nesqp;
+	struct iw_cm_id *cm_id;
+	struct iw_cm_event cm_event;
+	/* struct nes_cm_info cm_info; */
+	int ret;
+
+	if (!event->cm_node)
+		return;
+
+	if (!event->cm_node->cm_id)
+		return;
+
+	cm_id = event->cm_node->cm_id;
+
+	nes_debug(NES_DBG_CM, "%p - cm_id = %p\n", event->cm_node, cm_id);
+	nesqp = cm_id->provider_data;
+	if (!nesqp)
+		return;
+
+	nesqp->cm_id = NULL;
+	/* cm_id->provider_data = NULL; */
+	cm_event.event = IW_CM_EVENT_DISCONNECT;
+	cm_event.status = -ECONNRESET;
+	cm_event.provider_data = cm_id->provider_data;
+	cm_event.local_addr = cm_id->m_local_addr;
+	cm_event.remote_addr = cm_id->m_remote_addr;
+	cm_event.private_data = NULL;
+	cm_event.private_data_len = 0;
+
+	cm_id->add_ref(cm_id);
+	ret = cm_id->event_handler(cm_id, &cm_event);
+	atomic_inc(&cm_closes);
+	cm_event.event = IW_CM_EVENT_CLOSE;
+	cm_event.status = 0;
+	cm_event.provider_data = cm_id->provider_data;
+	cm_event.local_addr = cm_id->m_local_addr;
+	cm_event.remote_addr = cm_id->m_remote_addr;
+	cm_event.private_data = NULL;
+	cm_event.private_data_len = 0;
+	nes_debug(NES_DBG_CM, "NODE %p Generating CLOSE\n", event->cm_node);
+	ret = cm_id->event_handler(cm_id, &cm_event);
+
+	nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret);
+
+
+	/* notify OF layer about this connection error event */
+	cm_id->rem_ref(cm_id);
+
+	return;
+}
+
+
+/**
+ * cm_event_mpa_req
+ */
+static void cm_event_mpa_req(struct nes_cm_event *event)
+{
+	struct iw_cm_id *cm_id;
+	struct iw_cm_event cm_event;
+	int ret;
+	struct nes_cm_node *cm_node;
+	struct sockaddr_in *cm_event_laddr = (struct sockaddr_in *)
+					     &cm_event.local_addr;
+	struct sockaddr_in *cm_event_raddr = (struct sockaddr_in *)
+					     &cm_event.remote_addr;
+
+	cm_node = event->cm_node;
+	if (!cm_node)
+		return;
+	cm_id = cm_node->cm_id;
+
+	atomic_inc(&cm_connect_reqs);
+	nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n",
+		  cm_node, cm_id, jiffies);
+
+	cm_event.event = IW_CM_EVENT_CONNECT_REQUEST;
+	cm_event.status = 0;
+	cm_event.provider_data = (void *)cm_node;
+
+	cm_event_laddr->sin_family = AF_INET;
+	cm_event_laddr->sin_port = htons(event->cm_info.loc_port);
+	cm_event_laddr->sin_addr.s_addr = htonl(event->cm_info.loc_addr);
+
+	cm_event_raddr->sin_family = AF_INET;
+	cm_event_raddr->sin_port = htons(event->cm_info.rem_port);
+	cm_event_raddr->sin_addr.s_addr = htonl(event->cm_info.rem_addr);
+	cm_event.private_data = cm_node->mpa_frame_buf;
+	cm_event.private_data_len = (u8)cm_node->mpa_frame_size;
+	if (cm_node->mpa_frame_rev == IETF_MPA_V1) {
+		cm_event.ird = NES_MAX_IRD;
+		cm_event.ord = NES_MAX_ORD;
+	} else {
+	cm_event.ird = cm_node->ird_size;
+	cm_event.ord = cm_node->ord_size;
+	}
+
+	ret = cm_id->event_handler(cm_id, &cm_event);
+	if (ret)
+		printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n",
+		       __func__, __LINE__, ret);
+	return;
+}
+
+
+static void cm_event_mpa_reject(struct nes_cm_event *event)
+{
+	struct iw_cm_id *cm_id;
+	struct iw_cm_event cm_event;
+	struct nes_cm_node *cm_node;
+	int ret;
+	struct sockaddr_in *cm_event_laddr = (struct sockaddr_in *)
+					     &cm_event.local_addr;
+	struct sockaddr_in *cm_event_raddr = (struct sockaddr_in *)
+					     &cm_event.remote_addr;
+
+	cm_node = event->cm_node;
+	if (!cm_node)
+		return;
+	cm_id = cm_node->cm_id;
+
+	atomic_inc(&cm_connect_reqs);
+	nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n",
+		  cm_node, cm_id, jiffies);
+
+	cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
+	cm_event.status = -ECONNREFUSED;
+	cm_event.provider_data = cm_id->provider_data;
+
+	cm_event_laddr->sin_family = AF_INET;
+	cm_event_laddr->sin_port = htons(event->cm_info.loc_port);
+	cm_event_laddr->sin_addr.s_addr = htonl(event->cm_info.loc_addr);
+
+	cm_event_raddr->sin_family = AF_INET;
+	cm_event_raddr->sin_port = htons(event->cm_info.rem_port);
+	cm_event_raddr->sin_addr.s_addr = htonl(event->cm_info.rem_addr);
+
+	cm_event.private_data = cm_node->mpa_frame_buf;
+	cm_event.private_data_len = (u8)cm_node->mpa_frame_size;
+
+	nes_debug(NES_DBG_CM, "call CM_EVENT_MPA_REJECTED, local_addr=%08x, "
+		  "remove_addr=%08x\n",
+		  cm_event_laddr->sin_addr.s_addr,
+		  cm_event_raddr->sin_addr.s_addr);
+
+	ret = cm_id->event_handler(cm_id, &cm_event);
+	if (ret)
+		printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n",
+		       __func__, __LINE__, ret);
+
+	return;
+}
+
+
+static void nes_cm_event_handler(struct work_struct *);
+
+/**
+ * nes_cm_post_event
+ * post an event to the cm event handler
+ */
+static int nes_cm_post_event(struct nes_cm_event *event)
+{
+	atomic_inc(&event->cm_node->cm_core->events_posted);
+	add_ref_cm_node(event->cm_node);
+	event->cm_info.cm_id->add_ref(event->cm_info.cm_id);
+	INIT_WORK(&event->event_work, nes_cm_event_handler);
+	nes_debug(NES_DBG_CM, "cm_node=%p queue_work, event=%p\n",
+		  event->cm_node, event);
+
+	queue_work(event->cm_node->cm_core->event_wq, &event->event_work);
+
+	nes_debug(NES_DBG_CM, "Exit\n");
+	return 0;
+}
+
+
+/**
+ * nes_cm_event_handler
+ * worker function to handle cm events
+ * will free instance of nes_cm_event
+ */
+static void nes_cm_event_handler(struct work_struct *work)
+{
+	struct nes_cm_event *event = container_of(work, struct nes_cm_event,
+						  event_work);
+	struct nes_cm_core *cm_core;
+
+	if ((!event) || (!event->cm_node) || (!event->cm_node->cm_core))
+		return;
+
+	cm_core = event->cm_node->cm_core;
+	nes_debug(NES_DBG_CM, "event=%p, event->type=%u, events posted=%u\n",
+		  event, event->type, atomic_read(&cm_core->events_posted));
+
+	switch (event->type) {
+	case NES_CM_EVENT_MPA_REQ:
+		cm_event_mpa_req(event);
+		nes_debug(NES_DBG_CM, "cm_node=%p CM Event: MPA REQUEST\n",
+			  event->cm_node);
+		break;
+	case NES_CM_EVENT_RESET:
+		nes_debug(NES_DBG_CM, "cm_node = %p CM Event: RESET\n",
+			  event->cm_node);
+		cm_event_reset(event);
+		break;
+	case NES_CM_EVENT_CONNECTED:
+		if ((!event->cm_node->cm_id) ||
+		    (event->cm_node->state != NES_CM_STATE_TSA))
+			break;
+		cm_event_connected(event);
+		nes_debug(NES_DBG_CM, "CM Event: CONNECTED\n");
+		break;
+	case NES_CM_EVENT_MPA_REJECT:
+		if ((!event->cm_node->cm_id) ||
+		    (event->cm_node->state == NES_CM_STATE_TSA))
+			break;
+		cm_event_mpa_reject(event);
+		nes_debug(NES_DBG_CM, "CM Event: REJECT\n");
+		break;
+
+	case NES_CM_EVENT_ABORTED:
+		if ((!event->cm_node->cm_id) ||
+		    (event->cm_node->state == NES_CM_STATE_TSA))
+			break;
+		cm_event_connect_error(event);
+		nes_debug(NES_DBG_CM, "CM Event: ABORTED\n");
+		break;
+	case NES_CM_EVENT_DROPPED_PKT:
+		nes_debug(NES_DBG_CM, "CM Event: DROPPED PKT\n");
+		break;
+	default:
+		nes_debug(NES_DBG_CM, "CM Event: UNKNOWN EVENT TYPE\n");
+		break;
+	}
+
+	atomic_dec(&cm_core->events_posted);
+	event->cm_info.cm_id->rem_ref(event->cm_info.cm_id);
+	rem_ref_cm_node(cm_core, event->cm_node);
+	kfree(event);
+
+	return;
+}