RDMA/cxgb3: Add driver for Chelsio T3 RNIC

Add an RDMA/iWARP driver for the Chelsio T3 1GbE and 10GbE adapters.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 2081 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/cxgb3/iwch_cm.c b/drivers/infiniband/hw/cxgb3/iwch_cm.c
new file mode 100644
index 000000000000..a522b1baa3b4
--- /dev/null
+++ b/drivers/infiniband/hw/cxgb3/iwch_cm.c
@@ -0,0 +1,2081 @@
+/*
+ * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
+ * Copyright (c) 2006 Open Grid Computing, Inc. 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.
+ */
+#include <linux/module.h>
+#include <linux/list.h>
+#include <linux/workqueue.h>
+#include <linux/skbuff.h>
+#include <linux/timer.h>
+#include <linux/notifier.h>
+
+#include <net/neighbour.h>
+#include <net/netevent.h>
+#include <net/route.h>
+
+#include "tcb.h"
+#include "cxgb3_offload.h"
+#include "iwch.h"
+#include "iwch_provider.h"
+#include "iwch_cm.h"
+
+static char *states[] = {
+	"idle",
+	"listen",
+	"connecting",
+	"mpa_wait_req",
+	"mpa_req_sent",
+	"mpa_req_rcvd",
+	"mpa_rep_sent",
+	"fpdu_mode",
+	"aborting",
+	"closing",
+	"moribund",
+	"dead",
+	NULL,
+};
+
+static int ep_timeout_secs = 10;
+module_param(ep_timeout_secs, int, 0444);
+MODULE_PARM_DESC(ep_timeout_secs, "CM Endpoint operation timeout "
+				   "in seconds (default=10)");
+
+static int mpa_rev = 1;
+module_param(mpa_rev, int, 0444);
+MODULE_PARM_DESC(mpa_rev, "MPA Revision, 0 supports amso1100, "
+		 "1 is spec compliant. (default=1)");
+
+static int markers_enabled = 0;
+module_param(markers_enabled, int, 0444);
+MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)");
+
+static int crc_enabled = 1;
+module_param(crc_enabled, int, 0444);
+MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)");
+
+static int rcv_win = 256 * 1024;
+module_param(rcv_win, int, 0444);
+MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256)");
+
+static int snd_win = 32 * 1024;
+module_param(snd_win, int, 0444);
+MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=32KB)");
+
+static unsigned int nocong = 0;
+module_param(nocong, uint, 0444);
+MODULE_PARM_DESC(nocong, "Turn off congestion control (default=0)");
+
+static unsigned int cong_flavor = 1;
+module_param(cong_flavor, uint, 0444);
+MODULE_PARM_DESC(cong_flavor, "TCP Congestion control flavor (default=1)");
+
+static void process_work(struct work_struct *work);
+static struct workqueue_struct *workq;
+static DECLARE_WORK(skb_work, process_work);
+
+static struct sk_buff_head rxq;
+static cxgb3_cpl_handler_func work_handlers[NUM_CPL_CMDS];
+
+static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp);
+static void ep_timeout(unsigned long arg);
+static void connect_reply_upcall(struct iwch_ep *ep, int status);
+
+static void start_ep_timer(struct iwch_ep *ep)
+{
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	if (timer_pending(&ep->timer)) {
+		PDBG("%s stopped / restarted timer ep %p\n", __FUNCTION__, ep);
+		del_timer_sync(&ep->timer);
+	} else
+		get_ep(&ep->com);
+	ep->timer.expires = jiffies + ep_timeout_secs * HZ;
+	ep->timer.data = (unsigned long)ep;
+	ep->timer.function = ep_timeout;
+	add_timer(&ep->timer);
+}
+
+static void stop_ep_timer(struct iwch_ep *ep)
+{
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	del_timer_sync(&ep->timer);
+	put_ep(&ep->com);
+}
+
+static void release_tid(struct t3cdev *tdev, u32 hwtid, struct sk_buff *skb)
+{
+	struct cpl_tid_release *req;
+
+	skb = get_skb(skb, sizeof *req, GFP_KERNEL);
+	if (!skb)
+		return;
+	req = (struct cpl_tid_release *) skb_put(skb, sizeof(*req));
+	req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
+	OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_TID_RELEASE, hwtid));
+	skb->priority = CPL_PRIORITY_SETUP;
+	tdev->send(tdev, skb);
+	return;
+}
+
+int iwch_quiesce_tid(struct iwch_ep *ep)
+{
+	struct cpl_set_tcb_field *req;
+	struct sk_buff *skb = get_skb(NULL, sizeof(*req), GFP_KERNEL);
+
+	if (!skb)
+		return -ENOMEM;
+	req = (struct cpl_set_tcb_field *) skb_put(skb, sizeof(*req));
+	req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
+	req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid));
+	OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, ep->hwtid));
+	req->reply = 0;
+	req->cpu_idx = 0;
+	req->word = htons(W_TCB_RX_QUIESCE);
+	req->mask = cpu_to_be64(1ULL << S_TCB_RX_QUIESCE);
+	req->val = cpu_to_be64(1 << S_TCB_RX_QUIESCE);
+
+	skb->priority = CPL_PRIORITY_DATA;
+	ep->com.tdev->send(ep->com.tdev, skb);
+	return 0;
+}
+
+int iwch_resume_tid(struct iwch_ep *ep)
+{
+	struct cpl_set_tcb_field *req;
+	struct sk_buff *skb = get_skb(NULL, sizeof(*req), GFP_KERNEL);
+
+	if (!skb)
+		return -ENOMEM;
+	req = (struct cpl_set_tcb_field *) skb_put(skb, sizeof(*req));
+	req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
+	req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid));
+	OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, ep->hwtid));
+	req->reply = 0;
+	req->cpu_idx = 0;
+	req->word = htons(W_TCB_RX_QUIESCE);
+	req->mask = cpu_to_be64(1ULL << S_TCB_RX_QUIESCE);
+	req->val = 0;
+
+	skb->priority = CPL_PRIORITY_DATA;
+	ep->com.tdev->send(ep->com.tdev, skb);
+	return 0;
+}
+
+static void set_emss(struct iwch_ep *ep, u16 opt)
+{
+	PDBG("%s ep %p opt %u\n", __FUNCTION__, ep, opt);
+	ep->emss = T3C_DATA(ep->com.tdev)->mtus[G_TCPOPT_MSS(opt)] - 40;
+	if (G_TCPOPT_TSTAMP(opt))
+		ep->emss -= 12;
+	if (ep->emss < 128)
+		ep->emss = 128;
+	PDBG("emss=%d\n", ep->emss);
+}
+
+static enum iwch_ep_state state_read(struct iwch_ep_common *epc)
+{
+	unsigned long flags;
+	enum iwch_ep_state state;
+
+	spin_lock_irqsave(&epc->lock, flags);
+	state = epc->state;
+	spin_unlock_irqrestore(&epc->lock, flags);
+	return state;
+}
+
+static inline void __state_set(struct iwch_ep_common *epc,
+			       enum iwch_ep_state new)
+{
+	epc->state = new;
+}
+
+static void state_set(struct iwch_ep_common *epc, enum iwch_ep_state new)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&epc->lock, flags);
+	PDBG("%s - %s -> %s\n", __FUNCTION__, states[epc->state], states[new]);
+	__state_set(epc, new);
+	spin_unlock_irqrestore(&epc->lock, flags);
+	return;
+}
+
+static void *alloc_ep(int size, gfp_t gfp)
+{
+	struct iwch_ep_common *epc;
+
+	epc = kmalloc(size, gfp);
+	if (epc) {
+		memset(epc, 0, size);
+		kref_init(&epc->kref);
+		spin_lock_init(&epc->lock);
+		init_waitqueue_head(&epc->waitq);
+	}
+	PDBG("%s alloc ep %p\n", __FUNCTION__, epc);
+	return epc;
+}
+
+void __free_ep(struct kref *kref)
+{
+	struct iwch_ep_common *epc;
+	epc = container_of(kref, struct iwch_ep_common, kref);
+	PDBG("%s ep %p state %s\n", __FUNCTION__, epc, states[state_read(epc)]);
+	kfree(epc);
+}
+
+static void release_ep_resources(struct iwch_ep *ep)
+{
+	PDBG("%s ep %p tid %d\n", __FUNCTION__, ep, ep->hwtid);
+	cxgb3_remove_tid(ep->com.tdev, (void *)ep, ep->hwtid);
+	dst_release(ep->dst);
+	l2t_release(L2DATA(ep->com.tdev), ep->l2t);
+	if (ep->com.tdev->type == T3B)
+		release_tid(ep->com.tdev, ep->hwtid, NULL);
+	put_ep(&ep->com);
+}
+
+static void process_work(struct work_struct *work)
+{
+	struct sk_buff *skb = NULL;
+	void *ep;
+	struct t3cdev *tdev;
+	int ret;
+
+	while ((skb = skb_dequeue(&rxq))) {
+		ep = *((void **) (skb->cb));
+		tdev = *((struct t3cdev **) (skb->cb + sizeof(void *)));
+		ret = work_handlers[G_OPCODE(ntohl((__force __be32)skb->csum))](tdev, skb, ep);
+		if (ret & CPL_RET_BUF_DONE)
+			kfree_skb(skb);
+
+		/*
+		 * ep was referenced in sched(), and is freed here.
+		 */
+		put_ep((struct iwch_ep_common *)ep);
+	}
+}
+
+static int status2errno(int status)
+{
+	switch (status) {
+	case CPL_ERR_NONE:
+		return 0;
+	case CPL_ERR_CONN_RESET:
+		return -ECONNRESET;
+	case CPL_ERR_ARP_MISS:
+		return -EHOSTUNREACH;
+	case CPL_ERR_CONN_TIMEDOUT:
+		return -ETIMEDOUT;
+	case CPL_ERR_TCAM_FULL:
+		return -ENOMEM;
+	case CPL_ERR_CONN_EXIST:
+		return -EADDRINUSE;
+	default:
+		return -EIO;
+	}
+}
+
+/*
+ * Try and reuse skbs already allocated...
+ */
+static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp)
+{
+	if (skb) {
+		BUG_ON(skb_cloned(skb));
+		skb_trim(skb, 0);
+		skb_get(skb);
+	} else {
+		skb = alloc_skb(len, gfp);
+	}
+	return skb;
+}
+
+static struct rtable *find_route(struct t3cdev *dev, __be32 local_ip,
+				 __be32 peer_ip, __be16 local_port,
+				 __be16 peer_port, u8 tos)
+{
+	struct rtable *rt;
+	struct flowi fl = {
+		.oif = 0,
+		.nl_u = {
+			 .ip4_u = {
+				   .daddr = peer_ip,
+				   .saddr = local_ip,
+				   .tos = tos}
+			 },
+		.proto = IPPROTO_TCP,
+		.uli_u = {
+			  .ports = {
+				    .sport = local_port,
+				    .dport = peer_port}
+			  }
+	};
+
+	if (ip_route_output_flow(&rt, &fl, NULL, 0))
+		return NULL;
+	return rt;
+}
+
+static unsigned int find_best_mtu(const struct t3c_data *d, unsigned short mtu)
+{
+	int i = 0;
+
+	while (i < d->nmtus - 1 && d->mtus[i + 1] <= mtu)
+		++i;
+	return i;
+}
+
+static void arp_failure_discard(struct t3cdev *dev, struct sk_buff *skb)
+{
+	PDBG("%s t3cdev %p\n", __FUNCTION__, dev);
+	kfree_skb(skb);
+}
+
+/*
+ * Handle an ARP failure for an active open.
+ */
+static void act_open_req_arp_failure(struct t3cdev *dev, struct sk_buff *skb)
+{
+	printk(KERN_ERR MOD "ARP failure duing connect\n");
+	kfree_skb(skb);
+}
+
+/*
+ * Handle an ARP failure for a CPL_ABORT_REQ.  Change it into a no RST variant
+ * and send it along.
+ */
+static void abort_arp_failure(struct t3cdev *dev, struct sk_buff *skb)
+{
+	struct cpl_abort_req *req = cplhdr(skb);
+
+	PDBG("%s t3cdev %p\n", __FUNCTION__, dev);
+	req->cmd = CPL_ABORT_NO_RST;
+	cxgb3_ofld_send(dev, skb);
+}
+
+static int send_halfclose(struct iwch_ep *ep, gfp_t gfp)
+{
+	struct cpl_close_con_req *req;
+	struct sk_buff *skb;
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	skb = get_skb(NULL, sizeof(*req), gfp);
+	if (!skb) {
+		printk(KERN_ERR MOD "%s - failed to alloc skb\n", __FUNCTION__);
+		return -ENOMEM;
+	}
+	skb->priority = CPL_PRIORITY_DATA;
+	set_arp_failure_handler(skb, arp_failure_discard);
+	req = (struct cpl_close_con_req *) skb_put(skb, sizeof(*req));
+	req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_CLOSE_CON));
+	req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid));
+	OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, ep->hwtid));
+	l2t_send(ep->com.tdev, skb, ep->l2t);
+	return 0;
+}
+
+static int send_abort(struct iwch_ep *ep, struct sk_buff *skb, gfp_t gfp)
+{
+	struct cpl_abort_req *req;
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	skb = get_skb(skb, sizeof(*req), gfp);
+	if (!skb) {
+		printk(KERN_ERR MOD "%s - failed to alloc skb.\n",
+		       __FUNCTION__);
+		return -ENOMEM;
+	}
+	skb->priority = CPL_PRIORITY_DATA;
+	set_arp_failure_handler(skb, abort_arp_failure);
+	req = (struct cpl_abort_req *) skb_put(skb, sizeof(*req));
+	req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_REQ));
+	req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid));
+	OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid));
+	req->cmd = CPL_ABORT_SEND_RST;
+	l2t_send(ep->com.tdev, skb, ep->l2t);
+	return 0;
+}
+
+static int send_connect(struct iwch_ep *ep)
+{
+	struct cpl_act_open_req *req;
+	struct sk_buff *skb;
+	u32 opt0h, opt0l, opt2;
+	unsigned int mtu_idx;
+	int wscale;
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+
+	skb = get_skb(NULL, sizeof(*req), GFP_KERNEL);
+	if (!skb) {
+		printk(KERN_ERR MOD "%s - failed to alloc skb.\n",
+		       __FUNCTION__);
+		return -ENOMEM;
+	}
+	mtu_idx = find_best_mtu(T3C_DATA(ep->com.tdev), dst_mtu(ep->dst));
+	wscale = compute_wscale(rcv_win);
+	opt0h = V_NAGLE(0) |
+	    V_NO_CONG(nocong) |
+	    V_KEEP_ALIVE(1) |
+	    F_TCAM_BYPASS |
+	    V_WND_SCALE(wscale) |
+	    V_MSS_IDX(mtu_idx) |
+	    V_L2T_IDX(ep->l2t->idx) | V_TX_CHANNEL(ep->l2t->smt_idx);
+	opt0l = V_TOS((ep->tos >> 2) & M_TOS) | V_RCV_BUFSIZ(rcv_win>>10);
+	opt2 = V_FLAVORS_VALID(1) | V_CONG_CONTROL_FLAVOR(cong_flavor);
+	skb->priority = CPL_PRIORITY_SETUP;
+	set_arp_failure_handler(skb, act_open_req_arp_failure);
+
+	req = (struct cpl_act_open_req *) skb_put(skb, sizeof(*req));
+	req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
+	OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, ep->atid));
+	req->local_port = ep->com.local_addr.sin_port;
+	req->peer_port = ep->com.remote_addr.sin_port;
+	req->local_ip = ep->com.local_addr.sin_addr.s_addr;
+	req->peer_ip = ep->com.remote_addr.sin_addr.s_addr;
+	req->opt0h = htonl(opt0h);
+	req->opt0l = htonl(opt0l);
+	req->params = 0;
+	req->opt2 = htonl(opt2);
+	l2t_send(ep->com.tdev, skb, ep->l2t);
+	return 0;
+}
+
+static void send_mpa_req(struct iwch_ep *ep, struct sk_buff *skb)
+{
+	int mpalen;
+	struct tx_data_wr *req;
+	struct mpa_message *mpa;
+	int len;
+
+	PDBG("%s ep %p pd_len %d\n", __FUNCTION__, ep, ep->plen);
+
+	BUG_ON(skb_cloned(skb));
+
+	mpalen = sizeof(*mpa) + ep->plen;
+	if (skb->data + mpalen + sizeof(*req) > skb->end) {
+		kfree_skb(skb);
+		skb=alloc_skb(mpalen + sizeof(*req), GFP_KERNEL);
+		if (!skb) {
+			connect_reply_upcall(ep, -ENOMEM);
+			return;
+		}
+	}
+	skb_trim(skb, 0);
+	skb_reserve(skb, sizeof(*req));
+	skb_put(skb, mpalen);
+	skb->priority = CPL_PRIORITY_DATA;
+	mpa = (struct mpa_message *) skb->data;
+	memset(mpa, 0, sizeof(*mpa));
+	memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key));
+	mpa->flags = (crc_enabled ? MPA_CRC : 0) |
+		     (markers_enabled ? MPA_MARKERS : 0);
+	mpa->private_data_size = htons(ep->plen);
+	mpa->revision = mpa_rev;
+
+	if (ep->plen)
+		memcpy(mpa->private_data, ep->mpa_pkt + sizeof(*mpa), ep->plen);
+
+	/*
+	 * Reference the mpa skb.  This ensures the data area
+	 * will remain in memory until the hw acks the tx.
+	 * Function tx_ack() will deref it.
+	 */
+	skb_get(skb);
+	set_arp_failure_handler(skb, arp_failure_discard);
+	skb->h.raw = skb->data;
+	len = skb->len;
+	req = (struct tx_data_wr *) skb_push(skb, sizeof(*req));
+	req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA));
+	req->wr_lo = htonl(V_WR_TID(ep->hwtid));
+	req->len = htonl(len);
+	req->param = htonl(V_TX_PORT(ep->l2t->smt_idx) |
+			   V_TX_SNDBUF(snd_win>>15));
+	req->flags = htonl(F_TX_IMM_ACK|F_TX_INIT);
+	req->sndseq = htonl(ep->snd_seq);
+	BUG_ON(ep->mpa_skb);
+	ep->mpa_skb = skb;
+	l2t_send(ep->com.tdev, skb, ep->l2t);
+	start_ep_timer(ep);
+	state_set(&ep->com, MPA_REQ_SENT);
+	return;
+}
+
+static int send_mpa_reject(struct iwch_ep *ep, const void *pdata, u8 plen)
+{
+	int mpalen;
+	struct tx_data_wr *req;
+	struct mpa_message *mpa;
+	struct sk_buff *skb;
+
+	PDBG("%s ep %p plen %d\n", __FUNCTION__, ep, plen);
+
+	mpalen = sizeof(*mpa) + plen;
+
+	skb = get_skb(NULL, mpalen + sizeof(*req), GFP_KERNEL);
+	if (!skb) {
+		printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __FUNCTION__);
+		return -ENOMEM;
+	}
+	skb_reserve(skb, sizeof(*req));
+	mpa = (struct mpa_message *) skb_put(skb, mpalen);
+	memset(mpa, 0, sizeof(*mpa));
+	memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
+	mpa->flags = MPA_REJECT;
+	mpa->revision = mpa_rev;
+	mpa->private_data_size = htons(plen);
+	if (plen)
+		memcpy(mpa->private_data, pdata, plen);
+
+	/*
+	 * Reference the mpa skb again.  This ensures the data area
+	 * will remain in memory until the hw acks the tx.
+	 * Function tx_ack() will deref it.
+	 */
+	skb_get(skb);
+	skb->priority = CPL_PRIORITY_DATA;
+	set_arp_failure_handler(skb, arp_failure_discard);
+	skb->h.raw = skb->data;
+	req = (struct tx_data_wr *) skb_push(skb, sizeof(*req));
+	req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA));
+	req->wr_lo = htonl(V_WR_TID(ep->hwtid));
+	req->len = htonl(mpalen);
+	req->param = htonl(V_TX_PORT(ep->l2t->smt_idx) |
+			   V_TX_SNDBUF(snd_win>>15));
+	req->flags = htonl(F_TX_IMM_ACK|F_TX_INIT);
+	req->sndseq = htonl(ep->snd_seq);
+	BUG_ON(ep->mpa_skb);
+	ep->mpa_skb = skb;
+	l2t_send(ep->com.tdev, skb, ep->l2t);
+	return 0;
+}
+
+static int send_mpa_reply(struct iwch_ep *ep, const void *pdata, u8 plen)
+{
+	int mpalen;
+	struct tx_data_wr *req;
+	struct mpa_message *mpa;
+	int len;
+	struct sk_buff *skb;
+
+	PDBG("%s ep %p plen %d\n", __FUNCTION__, ep, plen);
+
+	mpalen = sizeof(*mpa) + plen;
+
+	skb = get_skb(NULL, mpalen + sizeof(*req), GFP_KERNEL);
+	if (!skb) {
+		printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __FUNCTION__);
+		return -ENOMEM;
+	}
+	skb->priority = CPL_PRIORITY_DATA;
+	skb_reserve(skb, sizeof(*req));
+	mpa = (struct mpa_message *) skb_put(skb, mpalen);
+	memset(mpa, 0, sizeof(*mpa));
+	memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
+	mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) |
+		     (markers_enabled ? MPA_MARKERS : 0);
+	mpa->revision = mpa_rev;
+	mpa->private_data_size = htons(plen);
+	if (plen)
+		memcpy(mpa->private_data, pdata, plen);
+
+	/*
+	 * Reference the mpa skb.  This ensures the data area
+	 * will remain in memory until the hw acks the tx.
+	 * Function tx_ack() will deref it.
+	 */
+	skb_get(skb);
+	set_arp_failure_handler(skb, arp_failure_discard);
+	skb->h.raw = skb->data;
+	len = skb->len;
+	req = (struct tx_data_wr *) skb_push(skb, sizeof(*req));
+	req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA));
+	req->wr_lo = htonl(V_WR_TID(ep->hwtid));
+	req->len = htonl(len);
+	req->param = htonl(V_TX_PORT(ep->l2t->smt_idx) |
+			   V_TX_SNDBUF(snd_win>>15));
+	req->flags = htonl(F_TX_MORE | F_TX_IMM_ACK | F_TX_INIT);
+	req->sndseq = htonl(ep->snd_seq);
+	ep->mpa_skb = skb;
+	state_set(&ep->com, MPA_REP_SENT);
+	l2t_send(ep->com.tdev, skb, ep->l2t);
+	return 0;
+}
+
+static int act_establish(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
+{
+	struct iwch_ep *ep = ctx;
+	struct cpl_act_establish *req = cplhdr(skb);
+	unsigned int tid = GET_TID(req);
+
+	PDBG("%s ep %p tid %d\n", __FUNCTION__, ep, tid);
+
+	dst_confirm(ep->dst);
+
+	/* setup the hwtid for this connection */
+	ep->hwtid = tid;
+	cxgb3_insert_tid(ep->com.tdev, &t3c_client, ep, tid);
+
+	ep->snd_seq = ntohl(req->snd_isn);
+
+	set_emss(ep, ntohs(req->tcp_opt));
+
+	/* dealloc the atid */
+	cxgb3_free_atid(ep->com.tdev, ep->atid);
+
+	/* start MPA negotiation */
+	send_mpa_req(ep, skb);
+
+	return 0;
+}
+
+static void abort_connection(struct iwch_ep *ep, struct sk_buff *skb, gfp_t gfp)
+{
+	PDBG("%s ep %p\n", __FILE__, ep);
+	state_set(&ep->com, ABORTING);
+	send_abort(ep, skb, gfp);
+}
+
+static void close_complete_upcall(struct iwch_ep *ep)
+{
+	struct iw_cm_event event;
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	memset(&event, 0, sizeof(event));
+	event.event = IW_CM_EVENT_CLOSE;
+	if (ep->com.cm_id) {
+		PDBG("close complete delivered ep %p cm_id %p tid %d\n",
+		     ep, ep->com.cm_id, ep->hwtid);
+		ep->com.cm_id->event_handler(ep->com.cm_id, &event);
+		ep->com.cm_id->rem_ref(ep->com.cm_id);
+		ep->com.cm_id = NULL;
+		ep->com.qp = NULL;
+	}
+}
+
+static void peer_close_upcall(struct iwch_ep *ep)
+{
+	struct iw_cm_event event;
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	memset(&event, 0, sizeof(event));
+	event.event = IW_CM_EVENT_DISCONNECT;
+	if (ep->com.cm_id) {
+		PDBG("peer close delivered ep %p cm_id %p tid %d\n",
+		     ep, ep->com.cm_id, ep->hwtid);
+		ep->com.cm_id->event_handler(ep->com.cm_id, &event);
+	}
+}
+
+static void peer_abort_upcall(struct iwch_ep *ep)
+{
+	struct iw_cm_event event;
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	memset(&event, 0, sizeof(event));
+	event.event = IW_CM_EVENT_CLOSE;
+	event.status = -ECONNRESET;
+	if (ep->com.cm_id) {
+		PDBG("abort delivered ep %p cm_id %p tid %d\n", ep,
+		     ep->com.cm_id, ep->hwtid);
+		ep->com.cm_id->event_handler(ep->com.cm_id, &event);
+		ep->com.cm_id->rem_ref(ep->com.cm_id);
+		ep->com.cm_id = NULL;
+		ep->com.qp = NULL;
+	}
+}
+
+static void connect_reply_upcall(struct iwch_ep *ep, int status)
+{
+	struct iw_cm_event event;
+
+	PDBG("%s ep %p status %d\n", __FUNCTION__, ep, status);
+	memset(&event, 0, sizeof(event));
+	event.event = IW_CM_EVENT_CONNECT_REPLY;
+	event.status = status;
+	event.local_addr = ep->com.local_addr;
+	event.remote_addr = ep->com.remote_addr;
+
+	if ((status == 0) || (status == -ECONNREFUSED)) {
+		event.private_data_len = ep->plen;
+		event.private_data = ep->mpa_pkt + sizeof(struct mpa_message);
+	}
+	if (ep->com.cm_id) {
+		PDBG("%s ep %p tid %d status %d\n", __FUNCTION__, ep,
+		     ep->hwtid, status);
+		ep->com.cm_id->event_handler(ep->com.cm_id, &event);
+	}
+	if (status < 0) {
+		ep->com.cm_id->rem_ref(ep->com.cm_id);
+		ep->com.cm_id = NULL;
+		ep->com.qp = NULL;
+	}
+}
+
+static void connect_request_upcall(struct iwch_ep *ep)
+{
+	struct iw_cm_event event;
+
+	PDBG("%s ep %p tid %d\n", __FUNCTION__, ep, ep->hwtid);
+	memset(&event, 0, sizeof(event));
+	event.event = IW_CM_EVENT_CONNECT_REQUEST;
+	event.local_addr = ep->com.local_addr;
+	event.remote_addr = ep->com.remote_addr;
+	event.private_data_len = ep->plen;
+	event.private_data = ep->mpa_pkt + sizeof(struct mpa_message);
+	event.provider_data = ep;
+	if (state_read(&ep->parent_ep->com) != DEAD)
+		ep->parent_ep->com.cm_id->event_handler(
+						ep->parent_ep->com.cm_id,
+						&event);
+	put_ep(&ep->parent_ep->com);
+	ep->parent_ep = NULL;
+}
+
+static void established_upcall(struct iwch_ep *ep)
+{
+	struct iw_cm_event event;
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	memset(&event, 0, sizeof(event));
+	event.event = IW_CM_EVENT_ESTABLISHED;
+	if (ep->com.cm_id) {
+		PDBG("%s ep %p tid %d\n", __FUNCTION__, ep, ep->hwtid);
+		ep->com.cm_id->event_handler(ep->com.cm_id, &event);
+	}
+}
+
+static int update_rx_credits(struct iwch_ep *ep, u32 credits)
+{
+	struct cpl_rx_data_ack *req;
+	struct sk_buff *skb;
+
+	PDBG("%s ep %p credits %u\n", __FUNCTION__, ep, credits);
+	skb = get_skb(NULL, sizeof(*req), GFP_KERNEL);
+	if (!skb) {
+		printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n");
+		return 0;
+	}
+
+	req = (struct cpl_rx_data_ack *) skb_put(skb, sizeof(*req));
+	req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
+	OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_RX_DATA_ACK, ep->hwtid));
+	req->credit_dack = htonl(V_RX_CREDITS(credits) | V_RX_FORCE_ACK(1));
+	skb->priority = CPL_PRIORITY_ACK;
+	ep->com.tdev->send(ep->com.tdev, skb);
+	return credits;
+}
+
+static void process_mpa_reply(struct iwch_ep *ep, struct sk_buff *skb)
+{
+	struct mpa_message *mpa;
+	u16 plen;
+	struct iwch_qp_attributes attrs;
+	enum iwch_qp_attr_mask mask;
+	int err;
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+
+	/*
+	 * Stop mpa timer.  If it expired, then the state has
+	 * changed and we bail since ep_timeout already aborted
+	 * the connection.
+	 */
+	stop_ep_timer(ep);
+	if (state_read(&ep->com) != MPA_REQ_SENT)
+		return;
+
+	/*
+	 * If we get more than the supported amount of private data
+	 * then we must fail this connection.
+	 */
+	if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) {
+		err = -EINVAL;
+		goto err;
+	}
+
+	/*
+	 * copy the new data into our accumulation buffer.
+	 */
+	memcpy(&(ep->mpa_pkt[ep->mpa_pkt_len]), skb->data, skb->len);
+	ep->mpa_pkt_len += skb->len;
+
+	/*
+	 * if we don't even have the mpa message, then bail.
+	 */
+	if (ep->mpa_pkt_len < sizeof(*mpa))
+		return;
+	mpa = (struct mpa_message *) ep->mpa_pkt;
+
+	/* Validate MPA header. */
+	if (mpa->revision != mpa_rev) {
+		err = -EPROTO;
+		goto err;
+	}
+	if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) {
+		err = -EPROTO;
+		goto err;
+	}
+
+	plen = ntohs(mpa->private_data_size);
+
+	/*
+	 * Fail if there's too much private data.
+	 */
+	if (plen > MPA_MAX_PRIVATE_DATA) {
+		err = -EPROTO;
+		goto err;
+	}
+
+	/*
+	 * If plen does not account for pkt size
+	 */
+	if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) {
+		err = -EPROTO;
+		goto err;
+	}
+
+	ep->plen = (u8) plen;
+
+	/*
+	 * If we don't have all the pdata yet, then bail.
+	 * We'll continue process when more data arrives.
+	 */
+	if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
+		return;
+
+	if (mpa->flags & MPA_REJECT) {
+		err = -ECONNREFUSED;
+		goto err;
+	}
+
+	/*
+	 * If we get here we have accumulated the entire mpa
+	 * start reply message including private data. And
+	 * the MPA header is valid.
+	 */
+	state_set(&ep->com, FPDU_MODE);
+	ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
+	ep->mpa_attr.recv_marker_enabled = markers_enabled;
+	ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
+	ep->mpa_attr.version = mpa_rev;
+	PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, "
+	     "xmit_marker_enabled=%d, version=%d\n", __FUNCTION__,
+	     ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled,
+	     ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version);
+
+	attrs.mpa_attr = ep->mpa_attr;
+	attrs.max_ird = ep->ird;
+	attrs.max_ord = ep->ord;
+	attrs.llp_stream_handle = ep;
+	attrs.next_state = IWCH_QP_STATE_RTS;
+
+	mask = IWCH_QP_ATTR_NEXT_STATE |
+	    IWCH_QP_ATTR_LLP_STREAM_HANDLE | IWCH_QP_ATTR_MPA_ATTR |
+	    IWCH_QP_ATTR_MAX_IRD | IWCH_QP_ATTR_MAX_ORD;
+
+	/* bind QP and TID with INIT_WR */
+	err = iwch_modify_qp(ep->com.qp->rhp,
+			     ep->com.qp, mask, &attrs, 1);
+	if (!err)
+		goto out;
+err:
+	abort_connection(ep, skb, GFP_KERNEL);
+out:
+	connect_reply_upcall(ep, err);
+	return;
+}
+
+static void process_mpa_request(struct iwch_ep *ep, struct sk_buff *skb)
+{
+	struct mpa_message *mpa;
+	u16 plen;
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+
+	/*
+	 * Stop mpa timer.  If it expired, then the state has
+	 * changed and we bail since ep_timeout already aborted
+	 * the connection.
+	 */
+	stop_ep_timer(ep);
+	if (state_read(&ep->com) != MPA_REQ_WAIT)
+		return;
+
+	/*
+	 * If we get more than the supported amount of private data
+	 * then we must fail this connection.
+	 */
+	if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) {
+		abort_connection(ep, skb, GFP_KERNEL);
+		return;
+	}
+
+	PDBG("%s enter (%s line %u)\n", __FUNCTION__, __FILE__, __LINE__);
+
+	/*
+	 * Copy the new data into our accumulation buffer.
+	 */
+	memcpy(&(ep->mpa_pkt[ep->mpa_pkt_len]), skb->data, skb->len);
+	ep->mpa_pkt_len += skb->len;
+
+	/*
+	 * If we don't even have the mpa message, then bail.
+	 * We'll continue process when more data arrives.
+	 */
+	if (ep->mpa_pkt_len < sizeof(*mpa))
+		return;
+	PDBG("%s enter (%s line %u)\n", __FUNCTION__, __FILE__, __LINE__);
+	mpa = (struct mpa_message *) ep->mpa_pkt;
+
+	/*
+	 * Validate MPA Header.
+	 */
+	if (mpa->revision != mpa_rev) {
+		abort_connection(ep, skb, GFP_KERNEL);
+		return;
+	}
+
+	if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) {
+		abort_connection(ep, skb, GFP_KERNEL);
+		return;
+	}
+
+	plen = ntohs(mpa->private_data_size);
+
+	/*
+	 * Fail if there's too much private data.
+	 */
+	if (plen > MPA_MAX_PRIVATE_DATA) {
+		abort_connection(ep, skb, GFP_KERNEL);
+		return;
+	}
+
+	/*
+	 * If plen does not account for pkt size
+	 */
+	if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) {
+		abort_connection(ep, skb, GFP_KERNEL);
+		return;
+	}
+	ep->plen = (u8) plen;
+
+	/*
+	 * If we don't have all the pdata yet, then bail.
+	 */
+	if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
+		return;
+
+	/*
+	 * If we get here we have accumulated the entire mpa
+	 * start reply message including private data.
+	 */
+	ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
+	ep->mpa_attr.recv_marker_enabled = markers_enabled;
+	ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
+	ep->mpa_attr.version = mpa_rev;
+	PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, "
+	     "xmit_marker_enabled=%d, version=%d\n", __FUNCTION__,
+	     ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled,
+	     ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version);
+
+	state_set(&ep->com, MPA_REQ_RCVD);
+
+	/* drive upcall */
+	connect_request_upcall(ep);
+	return;
+}
+
+static int rx_data(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
+{
+	struct iwch_ep *ep = ctx;
+	struct cpl_rx_data *hdr = cplhdr(skb);
+	unsigned int dlen = ntohs(hdr->len);
+
+	PDBG("%s ep %p dlen %u\n", __FUNCTION__, ep, dlen);
+
+	skb_pull(skb, sizeof(*hdr));
+	skb_trim(skb, dlen);
+
+	switch (state_read(&ep->com)) {
+	case MPA_REQ_SENT:
+		process_mpa_reply(ep, skb);
+		break;
+	case MPA_REQ_WAIT:
+		process_mpa_request(ep, skb);
+		break;
+	case MPA_REP_SENT:
+		break;
+	default:
+		printk(KERN_ERR MOD "%s Unexpected streaming data."
+		       " ep %p state %d tid %d\n",
+		       __FUNCTION__, ep, state_read(&ep->com), ep->hwtid);
+
+		/*
+		 * The ep will timeout and inform the ULP of the failure.
+		 * See ep_timeout().
+		 */
+		break;
+	}
+
+	/* update RX credits */
+	update_rx_credits(ep, dlen);
+
+	return CPL_RET_BUF_DONE;
+}
+
+/*
+ * Upcall from the adapter indicating data has been transmitted.
+ * For us its just the single MPA request or reply.  We can now free
+ * the skb holding the mpa message.
+ */
+static int tx_ack(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
+{
+	struct iwch_ep *ep = ctx;
+	struct cpl_wr_ack *hdr = cplhdr(skb);
+	unsigned int credits = ntohs(hdr->credits);
+	enum iwch_qp_attr_mask  mask;
+
+	PDBG("%s ep %p credits %u\n", __FUNCTION__, ep, credits);
+
+	if (credits == 0)
+		return CPL_RET_BUF_DONE;
+	BUG_ON(credits != 1);
+	BUG_ON(ep->mpa_skb == NULL);
+	kfree_skb(ep->mpa_skb);
+	ep->mpa_skb = NULL;
+	dst_confirm(ep->dst);
+	if (state_read(&ep->com) == MPA_REP_SENT) {
+		struct iwch_qp_attributes attrs;
+
+		/* bind QP to EP and move to RTS */
+		attrs.mpa_attr = ep->mpa_attr;
+		attrs.max_ird = ep->ord;
+		attrs.max_ord = ep->ord;
+		attrs.llp_stream_handle = ep;
+		attrs.next_state = IWCH_QP_STATE_RTS;
+
+		/* bind QP and TID with INIT_WR */
+		mask = IWCH_QP_ATTR_NEXT_STATE |
+				     IWCH_QP_ATTR_LLP_STREAM_HANDLE |
+				     IWCH_QP_ATTR_MPA_ATTR |
+				     IWCH_QP_ATTR_MAX_IRD |
+				     IWCH_QP_ATTR_MAX_ORD;
+
+		ep->com.rpl_err = iwch_modify_qp(ep->com.qp->rhp,
+				     ep->com.qp, mask, &attrs, 1);
+
+		if (!ep->com.rpl_err) {
+			state_set(&ep->com, FPDU_MODE);
+			established_upcall(ep);
+		}
+
+		ep->com.rpl_done = 1;
+		PDBG("waking up ep %p\n", ep);
+		wake_up(&ep->com.waitq);
+	}
+	return CPL_RET_BUF_DONE;
+}
+
+static int abort_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
+{
+	struct iwch_ep *ep = ctx;
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+
+	close_complete_upcall(ep);
+	state_set(&ep->com, DEAD);
+	release_ep_resources(ep);
+	return CPL_RET_BUF_DONE;
+}
+
+static int act_open_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
+{
+	struct iwch_ep *ep = ctx;
+	struct cpl_act_open_rpl *rpl = cplhdr(skb);
+
+	PDBG("%s ep %p status %u errno %d\n", __FUNCTION__, ep, rpl->status,
+	     status2errno(rpl->status));
+	connect_reply_upcall(ep, status2errno(rpl->status));
+	state_set(&ep->com, DEAD);
+	if (ep->com.tdev->type == T3B)
+		release_tid(ep->com.tdev, GET_TID(rpl), NULL);
+	cxgb3_free_atid(ep->com.tdev, ep->atid);
+	dst_release(ep->dst);
+	l2t_release(L2DATA(ep->com.tdev), ep->l2t);
+	put_ep(&ep->com);
+	return CPL_RET_BUF_DONE;
+}
+
+static int listen_start(struct iwch_listen_ep *ep)
+{
+	struct sk_buff *skb;
+	struct cpl_pass_open_req *req;
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	skb = get_skb(NULL, sizeof(*req), GFP_KERNEL);
+	if (!skb) {
+		printk(KERN_ERR MOD "t3c_listen_start failed to alloc skb!\n");
+		return -ENOMEM;
+	}
+
+	req = (struct cpl_pass_open_req *) skb_put(skb, sizeof(*req));
+	req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
+	OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_OPEN_REQ, ep->stid));
+	req->local_port = ep->com.local_addr.sin_port;
+	req->local_ip = ep->com.local_addr.sin_addr.s_addr;
+	req->peer_port = 0;
+	req->peer_ip = 0;
+	req->peer_netmask = 0;
+	req->opt0h = htonl(F_DELACK | F_TCAM_BYPASS);
+	req->opt0l = htonl(V_RCV_BUFSIZ(rcv_win>>10));
+	req->opt1 = htonl(V_CONN_POLICY(CPL_CONN_POLICY_ASK));
+
+	skb->priority = 1;
+	ep->com.tdev->send(ep->com.tdev, skb);
+	return 0;
+}
+
+static int pass_open_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
+{
+	struct iwch_listen_ep *ep = ctx;
+	struct cpl_pass_open_rpl *rpl = cplhdr(skb);
+
+	PDBG("%s ep %p status %d error %d\n", __FUNCTION__, ep,
+	     rpl->status, status2errno(rpl->status));
+	ep->com.rpl_err = status2errno(rpl->status);
+	ep->com.rpl_done = 1;
+	wake_up(&ep->com.waitq);
+
+	return CPL_RET_BUF_DONE;
+}
+
+static int listen_stop(struct iwch_listen_ep *ep)
+{
+	struct sk_buff *skb;
+	struct cpl_close_listserv_req *req;
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	skb = get_skb(NULL, sizeof(*req), GFP_KERNEL);
+	if (!skb) {
+		printk(KERN_ERR MOD "%s - failed to alloc skb\n", __FUNCTION__);
+		return -ENOMEM;
+	}
+	req = (struct cpl_close_listserv_req *) skb_put(skb, sizeof(*req));
+	req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
+	OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_LISTSRV_REQ, ep->stid));
+	skb->priority = 1;
+	ep->com.tdev->send(ep->com.tdev, skb);
+	return 0;
+}
+
+static int close_listsrv_rpl(struct t3cdev *tdev, struct sk_buff *skb,
+			     void *ctx)
+{
+	struct iwch_listen_ep *ep = ctx;
+	struct cpl_close_listserv_rpl *rpl = cplhdr(skb);
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	ep->com.rpl_err = status2errno(rpl->status);
+	ep->com.rpl_done = 1;
+	wake_up(&ep->com.waitq);
+	return CPL_RET_BUF_DONE;
+}
+
+static void accept_cr(struct iwch_ep *ep, __be32 peer_ip, struct sk_buff *skb)
+{
+	struct cpl_pass_accept_rpl *rpl;
+	unsigned int mtu_idx;
+	u32 opt0h, opt0l, opt2;
+	int wscale;
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	BUG_ON(skb_cloned(skb));
+	skb_trim(skb, sizeof(*rpl));
+	skb_get(skb);
+	mtu_idx = find_best_mtu(T3C_DATA(ep->com.tdev), dst_mtu(ep->dst));
+	wscale = compute_wscale(rcv_win);
+	opt0h = V_NAGLE(0) |
+	    V_NO_CONG(nocong) |
+	    V_KEEP_ALIVE(1) |
+	    F_TCAM_BYPASS |
+	    V_WND_SCALE(wscale) |
+	    V_MSS_IDX(mtu_idx) |
+	    V_L2T_IDX(ep->l2t->idx) | V_TX_CHANNEL(ep->l2t->smt_idx);
+	opt0l = V_TOS((ep->tos >> 2) & M_TOS) | V_RCV_BUFSIZ(rcv_win>>10);
+	opt2 = V_FLAVORS_VALID(1) | V_CONG_CONTROL_FLAVOR(cong_flavor);
+
+	rpl = cplhdr(skb);
+	rpl->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
+	OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, ep->hwtid));
+	rpl->peer_ip = peer_ip;
+	rpl->opt0h = htonl(opt0h);
+	rpl->opt0l_status = htonl(opt0l | CPL_PASS_OPEN_ACCEPT);
+	rpl->opt2 = htonl(opt2);
+	rpl->rsvd = rpl->opt2;	/* workaround for HW bug */
+	skb->priority = CPL_PRIORITY_SETUP;
+	l2t_send(ep->com.tdev, skb, ep->l2t);
+
+	return;
+}
+
+static void reject_cr(struct t3cdev *tdev, u32 hwtid, __be32 peer_ip,
+		      struct sk_buff *skb)
+{
+	PDBG("%s t3cdev %p tid %u peer_ip %x\n", __FUNCTION__, tdev, hwtid,
+	     peer_ip);
+	BUG_ON(skb_cloned(skb));
+	skb_trim(skb, sizeof(struct cpl_tid_release));
+	skb_get(skb);
+
+	if (tdev->type == T3B)
+		release_tid(tdev, hwtid, skb);
+	else {
+		struct cpl_pass_accept_rpl *rpl;
+
+		rpl = cplhdr(skb);
+		skb->priority = CPL_PRIORITY_SETUP;
+		rpl->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
+		OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL,
+						      hwtid));
+		rpl->peer_ip = peer_ip;
+		rpl->opt0h = htonl(F_TCAM_BYPASS);
+		rpl->opt0l_status = htonl(CPL_PASS_OPEN_REJECT);
+		rpl->opt2 = 0;
+		rpl->rsvd = rpl->opt2;
+		tdev->send(tdev, skb);
+	}
+}
+
+static int pass_accept_req(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
+{
+	struct iwch_ep *child_ep, *parent_ep = ctx;
+	struct cpl_pass_accept_req *req = cplhdr(skb);
+	unsigned int hwtid = GET_TID(req);
+	struct dst_entry *dst;
+	struct l2t_entry *l2t;
+	struct rtable *rt;
+	struct iff_mac tim;
+
+	PDBG("%s parent ep %p tid %u\n", __FUNCTION__, parent_ep, hwtid);
+
+	if (state_read(&parent_ep->com) != LISTEN) {
+		printk(KERN_ERR "%s - listening ep not in LISTEN\n",
+		       __FUNCTION__);
+		goto reject;
+	}
+
+	/*
+	 * Find the netdev for this connection request.
+	 */
+	tim.mac_addr = req->dst_mac;
+	tim.vlan_tag = ntohs(req->vlan_tag);
+	if (tdev->ctl(tdev, GET_IFF_FROM_MAC, &tim) < 0 || !tim.dev) {
+		printk(KERN_ERR
+			"%s bad dst mac %02x %02x %02x %02x %02x %02x\n",
+			__FUNCTION__,
+			req->dst_mac[0],
+			req->dst_mac[1],
+			req->dst_mac[2],
+			req->dst_mac[3],
+			req->dst_mac[4],
+			req->dst_mac[5]);
+		goto reject;
+	}
+
+	/* Find output route */
+	rt = find_route(tdev,
+			req->local_ip,
+			req->peer_ip,
+			req->local_port,
+			req->peer_port, G_PASS_OPEN_TOS(ntohl(req->tos_tid)));
+	if (!rt) {
+		printk(KERN_ERR MOD "%s - failed to find dst entry!\n",
+		       __FUNCTION__);
+		goto reject;
+	}
+	dst = &rt->u.dst;
+	l2t = t3_l2t_get(tdev, dst->neighbour, dst->neighbour->dev);
+	if (!l2t) {
+		printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n",
+		       __FUNCTION__);
+		dst_release(dst);
+		goto reject;
+	}
+	child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL);
+	if (!child_ep) {
+		printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n",
+		       __FUNCTION__);
+		l2t_release(L2DATA(tdev), l2t);
+		dst_release(dst);
+		goto reject;
+	}
+	state_set(&child_ep->com, CONNECTING);
+	child_ep->com.tdev = tdev;
+	child_ep->com.cm_id = NULL;
+	child_ep->com.local_addr.sin_family = PF_INET;
+	child_ep->com.local_addr.sin_port = req->local_port;
+	child_ep->com.local_addr.sin_addr.s_addr = req->local_ip;
+	child_ep->com.remote_addr.sin_family = PF_INET;
+	child_ep->com.remote_addr.sin_port = req->peer_port;
+	child_ep->com.remote_addr.sin_addr.s_addr = req->peer_ip;
+	get_ep(&parent_ep->com);
+	child_ep->parent_ep = parent_ep;
+	child_ep->tos = G_PASS_OPEN_TOS(ntohl(req->tos_tid));
+	child_ep->l2t = l2t;
+	child_ep->dst = dst;
+	child_ep->hwtid = hwtid;
+	init_timer(&child_ep->timer);
+	cxgb3_insert_tid(tdev, &t3c_client, child_ep, hwtid);
+	accept_cr(child_ep, req->peer_ip, skb);
+	goto out;
+reject:
+	reject_cr(tdev, hwtid, req->peer_ip, skb);
+out:
+	return CPL_RET_BUF_DONE;
+}
+
+static int pass_establish(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
+{
+	struct iwch_ep *ep = ctx;
+	struct cpl_pass_establish *req = cplhdr(skb);
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	ep->snd_seq = ntohl(req->snd_isn);
+
+	set_emss(ep, ntohs(req->tcp_opt));
+
+	dst_confirm(ep->dst);
+	state_set(&ep->com, MPA_REQ_WAIT);
+	start_ep_timer(ep);
+
+	return CPL_RET_BUF_DONE;
+}
+
+static int peer_close(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
+{
+	struct iwch_ep *ep = ctx;
+	struct iwch_qp_attributes attrs;
+	unsigned long flags;
+	int disconnect = 1;
+	int release = 0;
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	dst_confirm(ep->dst);
+
+	spin_lock_irqsave(&ep->com.lock, flags);
+	switch (ep->com.state) {
+	case MPA_REQ_WAIT:
+		__state_set(&ep->com, CLOSING);
+		break;
+	case MPA_REQ_SENT:
+		__state_set(&ep->com, CLOSING);
+		connect_reply_upcall(ep, -ECONNRESET);
+		break;
+	case MPA_REQ_RCVD:
+
+		/*
+		 * We're gonna mark this puppy DEAD, but keep
+		 * the reference on it until the ULP accepts or
+		 * rejects the CR.
+		 */
+		__state_set(&ep->com, CLOSING);
+		get_ep(&ep->com);
+		break;
+	case MPA_REP_SENT:
+		__state_set(&ep->com, CLOSING);
+		ep->com.rpl_done = 1;
+		ep->com.rpl_err = -ECONNRESET;
+		PDBG("waking up ep %p\n", ep);
+		wake_up(&ep->com.waitq);
+		break;
+	case FPDU_MODE:
+		__state_set(&ep->com, CLOSING);
+		attrs.next_state = IWCH_QP_STATE_CLOSING;
+		iwch_modify_qp(ep->com.qp->rhp, ep->com.qp,
+			       IWCH_QP_ATTR_NEXT_STATE, &attrs, 1);
+		peer_close_upcall(ep);
+		break;
+	case ABORTING:
+		disconnect = 0;
+		break;
+	case CLOSING:
+		start_ep_timer(ep);
+		__state_set(&ep->com, MORIBUND);
+		disconnect = 0;
+		break;
+	case MORIBUND:
+		stop_ep_timer(ep);
+		if (ep->com.cm_id && ep->com.qp) {
+			attrs.next_state = IWCH_QP_STATE_IDLE;
+			iwch_modify_qp(ep->com.qp->rhp, ep->com.qp,
+				       IWCH_QP_ATTR_NEXT_STATE, &attrs, 1);
+		}
+		close_complete_upcall(ep);
+		__state_set(&ep->com, DEAD);
+		release = 1;
+		disconnect = 0;
+		break;
+	case DEAD:
+		disconnect = 0;
+		break;
+	default:
+		BUG_ON(1);
+	}
+	spin_unlock_irqrestore(&ep->com.lock, flags);
+	if (disconnect)
+		iwch_ep_disconnect(ep, 0, GFP_KERNEL);
+	if (release)
+		release_ep_resources(ep);
+	return CPL_RET_BUF_DONE;
+}
+
+/*
+ * Returns whether an ABORT_REQ_RSS message is a negative advice.
+ */
+static inline int is_neg_adv_abort(unsigned int status)
+{
+	return status == CPL_ERR_RTX_NEG_ADVICE ||
+	       status == CPL_ERR_PERSIST_NEG_ADVICE;
+}
+
+static int peer_abort(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
+{
+	struct cpl_abort_req_rss *req = cplhdr(skb);
+	struct iwch_ep *ep = ctx;
+	struct cpl_abort_rpl *rpl;
+	struct sk_buff *rpl_skb;
+	struct iwch_qp_attributes attrs;
+	int ret;
+	int state;
+
+	if (is_neg_adv_abort(req->status)) {
+		PDBG("%s neg_adv_abort ep %p tid %d\n", __FUNCTION__, ep,
+		     ep->hwtid);
+		t3_l2t_send_event(ep->com.tdev, ep->l2t);
+		return CPL_RET_BUF_DONE;
+	}
+
+	state = state_read(&ep->com);
+	PDBG("%s ep %p state %u\n", __FUNCTION__, ep, state);
+	switch (state) {
+	case CONNECTING:
+		break;
+	case MPA_REQ_WAIT:
+		break;
+	case MPA_REQ_SENT:
+		connect_reply_upcall(ep, -ECONNRESET);
+		break;
+	case MPA_REP_SENT:
+		ep->com.rpl_done = 1;
+		ep->com.rpl_err = -ECONNRESET;
+		PDBG("waking up ep %p\n", ep);
+		wake_up(&ep->com.waitq);
+		break;
+	case MPA_REQ_RCVD:
+
+		/*
+		 * We're gonna mark this puppy DEAD, but keep
+		 * the reference on it until the ULP accepts or
+		 * rejects the CR.
+		 */
+		get_ep(&ep->com);
+		break;
+	case MORIBUND:
+		stop_ep_timer(ep);
+	case FPDU_MODE:
+	case CLOSING:
+		if (ep->com.cm_id && ep->com.qp) {
+			attrs.next_state = IWCH_QP_STATE_ERROR;
+			ret = iwch_modify_qp(ep->com.qp->rhp,
+				     ep->com.qp, IWCH_QP_ATTR_NEXT_STATE,
+				     &attrs, 1);
+			if (ret)
+				printk(KERN_ERR MOD
+				       "%s - qp <- error failed!\n",
+				       __FUNCTION__);
+		}
+		peer_abort_upcall(ep);
+		break;
+	case ABORTING:
+		break;
+	case DEAD:
+		PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __FUNCTION__);
+		return CPL_RET_BUF_DONE;
+	default:
+		BUG_ON(1);
+		break;
+	}
+	dst_confirm(ep->dst);
+
+	rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL);
+	if (!rpl_skb) {
+		printk(KERN_ERR MOD "%s - cannot allocate skb!\n",
+		       __FUNCTION__);
+		dst_release(ep->dst);
+		l2t_release(L2DATA(ep->com.tdev), ep->l2t);
+		put_ep(&ep->com);
+		return CPL_RET_BUF_DONE;
+	}
+	rpl_skb->priority = CPL_PRIORITY_DATA;
+	rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl));
+	rpl->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_RPL));
+	rpl->wr.wr_lo = htonl(V_WR_TID(ep->hwtid));
+	OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid));
+	rpl->cmd = CPL_ABORT_NO_RST;
+	ep->com.tdev->send(ep->com.tdev, rpl_skb);
+	if (state != ABORTING) {
+		state_set(&ep->com, DEAD);
+		release_ep_resources(ep);
+	}
+	return CPL_RET_BUF_DONE;
+}
+
+static int close_con_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
+{
+	struct iwch_ep *ep = ctx;
+	struct iwch_qp_attributes attrs;
+	unsigned long flags;
+	int release = 0;
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	BUG_ON(!ep);
+
+	/* The cm_id may be null if we failed to connect */
+	spin_lock_irqsave(&ep->com.lock, flags);
+	switch (ep->com.state) {
+	case CLOSING:
+		start_ep_timer(ep);
+		__state_set(&ep->com, MORIBUND);
+		break;
+	case MORIBUND:
+		stop_ep_timer(ep);
+		if ((ep->com.cm_id) && (ep->com.qp)) {
+			attrs.next_state = IWCH_QP_STATE_IDLE;
+			iwch_modify_qp(ep->com.qp->rhp,
+					     ep->com.qp,
+					     IWCH_QP_ATTR_NEXT_STATE,
+					     &attrs, 1);
+		}
+		close_complete_upcall(ep);
+		__state_set(&ep->com, DEAD);
+		release = 1;
+		break;
+	case DEAD:
+	default:
+		BUG_ON(1);
+		break;
+	}
+	spin_unlock_irqrestore(&ep->com.lock, flags);
+	if (release)
+		release_ep_resources(ep);
+	return CPL_RET_BUF_DONE;
+}
+
+/*
+ * T3A does 3 things when a TERM is received:
+ * 1) send up a CPL_RDMA_TERMINATE message with the TERM packet
+ * 2) generate an async event on the QP with the TERMINATE opcode
+ * 3) post a TERMINATE opcde cqe into the associated CQ.
+ *
+ * For (1), we save the message in the qp for later consumer consumption.
+ * For (2), we move the QP into TERMINATE, post a QP event and disconnect.
+ * For (3), we toss the CQE in cxio_poll_cq().
+ *
+ * terminate() handles case (1)...
+ */
+static int terminate(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
+{
+	struct iwch_ep *ep = ctx;
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	skb_pull(skb, sizeof(struct cpl_rdma_terminate));
+	PDBG("%s saving %d bytes of term msg\n", __FUNCTION__, skb->len);
+	memcpy(ep->com.qp->attr.terminate_buffer, skb->data, skb->len);
+	ep->com.qp->attr.terminate_msg_len = skb->len;
+	ep->com.qp->attr.is_terminate_local = 0;
+	return CPL_RET_BUF_DONE;
+}
+
+static int ec_status(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
+{
+	struct cpl_rdma_ec_status *rep = cplhdr(skb);
+	struct iwch_ep *ep = ctx;
+
+	PDBG("%s ep %p tid %u status %d\n", __FUNCTION__, ep, ep->hwtid,
+	     rep->status);
+	if (rep->status) {
+		struct iwch_qp_attributes attrs;
+
+		printk(KERN_ERR MOD "%s BAD CLOSE - Aborting tid %u\n",
+		       __FUNCTION__, ep->hwtid);
+		attrs.next_state = IWCH_QP_STATE_ERROR;
+		iwch_modify_qp(ep->com.qp->rhp,
+			       ep->com.qp, IWCH_QP_ATTR_NEXT_STATE,
+			       &attrs, 1);
+		abort_connection(ep, NULL, GFP_KERNEL);
+	}
+	return CPL_RET_BUF_DONE;
+}
+
+static void ep_timeout(unsigned long arg)
+{
+	struct iwch_ep *ep = (struct iwch_ep *)arg;
+	struct iwch_qp_attributes attrs;
+	unsigned long flags;
+
+	spin_lock_irqsave(&ep->com.lock, flags);
+	PDBG("%s ep %p tid %u state %d\n", __FUNCTION__, ep, ep->hwtid,
+	     ep->com.state);
+	switch (ep->com.state) {
+	case MPA_REQ_SENT:
+		connect_reply_upcall(ep, -ETIMEDOUT);
+		break;
+	case MPA_REQ_WAIT:
+		break;
+	case MORIBUND:
+		if (ep->com.cm_id && ep->com.qp) {
+			attrs.next_state = IWCH_QP_STATE_ERROR;
+			iwch_modify_qp(ep->com.qp->rhp,
+				     ep->com.qp, IWCH_QP_ATTR_NEXT_STATE,
+				     &attrs, 1);
+		}
+		break;
+	default:
+		BUG();
+	}
+	__state_set(&ep->com, CLOSING);
+	spin_unlock_irqrestore(&ep->com.lock, flags);
+	abort_connection(ep, NULL, GFP_ATOMIC);
+	put_ep(&ep->com);
+}
+
+int iwch_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
+{
+	int err;
+	struct iwch_ep *ep = to_ep(cm_id);
+	PDBG("%s ep %p tid %u\n", __FUNCTION__, ep, ep->hwtid);
+
+	if (state_read(&ep->com) == DEAD) {
+		put_ep(&ep->com);
+		return -ECONNRESET;
+	}
+	BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD);
+	state_set(&ep->com, CLOSING);
+	if (mpa_rev == 0)
+		abort_connection(ep, NULL, GFP_KERNEL);
+	else {
+		err = send_mpa_reject(ep, pdata, pdata_len);
+		err = send_halfclose(ep, GFP_KERNEL);
+	}
+	return 0;
+}
+
+int iwch_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
+{
+	int err;
+	struct iwch_qp_attributes attrs;
+	enum iwch_qp_attr_mask mask;
+	struct iwch_ep *ep = to_ep(cm_id);
+	struct iwch_dev *h = to_iwch_dev(cm_id->device);
+	struct iwch_qp *qp = get_qhp(h, conn_param->qpn);
+
+	PDBG("%s ep %p tid %u\n", __FUNCTION__, ep, ep->hwtid);
+	if (state_read(&ep->com) == DEAD) {
+		put_ep(&ep->com);
+		return -ECONNRESET;
+	}
+
+	BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD);
+	BUG_ON(!qp);
+
+	if ((conn_param->ord > qp->rhp->attr.max_rdma_read_qp_depth) ||
+	    (conn_param->ird > qp->rhp->attr.max_rdma_reads_per_qp)) {
+		abort_connection(ep, NULL, GFP_KERNEL);
+		return -EINVAL;
+	}
+
+	cm_id->add_ref(cm_id);
+	ep->com.cm_id = cm_id;
+	ep->com.qp = qp;
+
+	ep->com.rpl_done = 0;
+	ep->com.rpl_err = 0;
+	ep->ird = conn_param->ird;
+	ep->ord = conn_param->ord;
+	PDBG("%s %d ird %d ord %d\n", __FUNCTION__, __LINE__, ep->ird, ep->ord);
+	get_ep(&ep->com);
+	err = send_mpa_reply(ep, conn_param->private_data,
+			     conn_param->private_data_len);
+	if (err) {
+		ep->com.cm_id = NULL;
+		ep->com.qp = NULL;
+		cm_id->rem_ref(cm_id);
+		abort_connection(ep, NULL, GFP_KERNEL);
+		put_ep(&ep->com);
+		return err;
+	}
+
+	/* bind QP to EP and move to RTS */
+	attrs.mpa_attr = ep->mpa_attr;
+	attrs.max_ird = ep->ord;
+	attrs.max_ord = ep->ord;
+	attrs.llp_stream_handle = ep;
+	attrs.next_state = IWCH_QP_STATE_RTS;
+
+	/* bind QP and TID with INIT_WR */
+	mask = IWCH_QP_ATTR_NEXT_STATE |
+			     IWCH_QP_ATTR_LLP_STREAM_HANDLE |
+			     IWCH_QP_ATTR_MPA_ATTR |
+			     IWCH_QP_ATTR_MAX_IRD |
+			     IWCH_QP_ATTR_MAX_ORD;
+
+	err = iwch_modify_qp(ep->com.qp->rhp,
+			     ep->com.qp, mask, &attrs, 1);
+
+	if (err) {
+		ep->com.cm_id = NULL;
+		ep->com.qp = NULL;
+		cm_id->rem_ref(cm_id);
+		abort_connection(ep, NULL, GFP_KERNEL);
+	} else {
+		state_set(&ep->com, FPDU_MODE);
+		established_upcall(ep);
+	}
+	put_ep(&ep->com);
+	return err;
+}
+
+int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
+{
+	int err = 0;
+	struct iwch_dev *h = to_iwch_dev(cm_id->device);
+	struct iwch_ep *ep;
+	struct rtable *rt;
+
+	ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
+	if (!ep) {
+		printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __FUNCTION__);
+		err = -ENOMEM;
+		goto out;
+	}
+	init_timer(&ep->timer);
+	ep->plen = conn_param->private_data_len;
+	if (ep->plen)
+		memcpy(ep->mpa_pkt + sizeof(struct mpa_message),
+		       conn_param->private_data, ep->plen);
+	ep->ird = conn_param->ird;
+	ep->ord = conn_param->ord;
+	ep->com.tdev = h->rdev.t3cdev_p;
+
+	cm_id->add_ref(cm_id);
+	ep->com.cm_id = cm_id;
+	ep->com.qp = get_qhp(h, conn_param->qpn);
+	BUG_ON(!ep->com.qp);
+	PDBG("%s qpn 0x%x qp %p cm_id %p\n", __FUNCTION__, conn_param->qpn,
+	     ep->com.qp, cm_id);
+
+	/*
+	 * Allocate an active TID to initiate a TCP connection.
+	 */
+	ep->atid = cxgb3_alloc_atid(h->rdev.t3cdev_p, &t3c_client, ep);
+	if (ep->atid == -1) {
+		printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __FUNCTION__);
+		err = -ENOMEM;
+		goto fail2;
+	}
+
+	/* find a route */
+	rt = find_route(h->rdev.t3cdev_p,
+			cm_id->local_addr.sin_addr.s_addr,
+			cm_id->remote_addr.sin_addr.s_addr,
+			cm_id->local_addr.sin_port,
+			cm_id->remote_addr.sin_port, IPTOS_LOWDELAY);
+	if (!rt) {
+		printk(KERN_ERR MOD "%s - cannot find route.\n", __FUNCTION__);
+		err = -EHOSTUNREACH;
+		goto fail3;
+	}
+	ep->dst = &rt->u.dst;
+
+	/* get a l2t entry */
+	ep->l2t = t3_l2t_get(ep->com.tdev, ep->dst->neighbour,
+			     ep->dst->neighbour->dev);
+	if (!ep->l2t) {
+		printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __FUNCTION__);
+		err = -ENOMEM;
+		goto fail4;
+	}
+
+	state_set(&ep->com, CONNECTING);
+	ep->tos = IPTOS_LOWDELAY;
+	ep->com.local_addr = cm_id->local_addr;
+	ep->com.remote_addr = cm_id->remote_addr;
+
+	/* send connect request to rnic */
+	err = send_connect(ep);
+	if (!err)
+		goto out;
+
+	l2t_release(L2DATA(h->rdev.t3cdev_p), ep->l2t);
+fail4:
+	dst_release(ep->dst);
+fail3:
+	cxgb3_free_atid(ep->com.tdev, ep->atid);
+fail2:
+	put_ep(&ep->com);
+out:
+	return err;
+}
+
+int iwch_create_listen(struct iw_cm_id *cm_id, int backlog)
+{
+	int err = 0;
+	struct iwch_dev *h = to_iwch_dev(cm_id->device);
+	struct iwch_listen_ep *ep;
+
+
+	might_sleep();
+
+	ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
+	if (!ep) {
+		printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __FUNCTION__);
+		err = -ENOMEM;
+		goto fail1;
+	}
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+	ep->com.tdev = h->rdev.t3cdev_p;
+	cm_id->add_ref(cm_id);
+	ep->com.cm_id = cm_id;
+	ep->backlog = backlog;
+	ep->com.local_addr = cm_id->local_addr;
+
+	/*
+	 * Allocate a server TID.
+	 */
+	ep->stid = cxgb3_alloc_stid(h->rdev.t3cdev_p, &t3c_client, ep);
+	if (ep->stid == -1) {
+		printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __FUNCTION__);
+		err = -ENOMEM;
+		goto fail2;
+	}
+
+	state_set(&ep->com, LISTEN);
+	err = listen_start(ep);
+	if (err)
+		goto fail3;
+
+	/* wait for pass_open_rpl */
+	wait_event(ep->com.waitq, ep->com.rpl_done);
+	err = ep->com.rpl_err;
+	if (!err) {
+		cm_id->provider_data = ep;
+		goto out;
+	}
+fail3:
+	cxgb3_free_stid(ep->com.tdev, ep->stid);
+fail2:
+	put_ep(&ep->com);
+fail1:
+out:
+	return err;
+}
+
+int iwch_destroy_listen(struct iw_cm_id *cm_id)
+{
+	int err;
+	struct iwch_listen_ep *ep = to_listen_ep(cm_id);
+
+	PDBG("%s ep %p\n", __FUNCTION__, ep);
+
+	might_sleep();
+	state_set(&ep->com, DEAD);
+	ep->com.rpl_done = 0;
+	ep->com.rpl_err = 0;
+	err = listen_stop(ep);
+	wait_event(ep->com.waitq, ep->com.rpl_done);
+	cxgb3_free_stid(ep->com.tdev, ep->stid);
+	err = ep->com.rpl_err;
+	cm_id->rem_ref(cm_id);
+	put_ep(&ep->com);
+	return err;
+}
+
+int iwch_ep_disconnect(struct iwch_ep *ep, int abrupt, gfp_t gfp)
+{
+	int ret=0;
+	unsigned long flags;
+	int close = 0;
+
+	spin_lock_irqsave(&ep->com.lock, flags);
+
+	PDBG("%s ep %p state %s, abrupt %d\n", __FUNCTION__, ep,
+	     states[ep->com.state], abrupt);
+
+	if (ep->com.state == DEAD) {
+		PDBG("%s already dead ep %p\n", __FUNCTION__, ep);
+		goto out;
+	}
+
+	if (abrupt) {
+		if (ep->com.state != ABORTING) {
+			ep->com.state = ABORTING;
+			close = 1;
+		}
+		goto out;
+	}
+
+	switch (ep->com.state) {
+	case MPA_REQ_WAIT:
+	case MPA_REQ_SENT:
+	case MPA_REQ_RCVD:
+	case MPA_REP_SENT:
+	case FPDU_MODE:
+		ep->com.state = CLOSING;
+		close = 1;
+		break;
+	case CLOSING:
+		start_ep_timer(ep);
+		ep->com.state = MORIBUND;
+		close = 1;
+		break;
+	case MORIBUND:
+		break;
+	default:
+		BUG();
+		break;
+	}
+out:
+	spin_unlock_irqrestore(&ep->com.lock, flags);
+	if (close) {
+		if (abrupt)
+			ret = send_abort(ep, NULL, gfp);
+		else
+			ret = send_halfclose(ep, gfp);
+	}
+	return ret;
+}
+
+int iwch_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new,
+		     struct l2t_entry *l2t)
+{
+	struct iwch_ep *ep = ctx;
+
+	if (ep->dst != old)
+		return 0;
+
+	PDBG("%s ep %p redirect to dst %p l2t %p\n", __FUNCTION__, ep, new,
+	     l2t);
+	dst_hold(new);
+	l2t_release(L2DATA(ep->com.tdev), ep->l2t);
+	ep->l2t = l2t;
+	dst_release(old);
+	ep->dst = new;
+	return 1;
+}
+
+/*
+ * All the CM events are handled on a work queue to have a safe context.
+ */
+static int sched(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
+{
+	struct iwch_ep_common *epc = ctx;
+
+	get_ep(epc);
+
+	/*
+	 * Save ctx and tdev in the skb->cb area.
+	 */
+	*((void **) skb->cb) = ctx;
+	*((struct t3cdev **) (skb->cb + sizeof(void *))) = tdev;
+
+	/*
+	 * Queue the skb and schedule the worker thread.
+	 */
+	skb_queue_tail(&rxq, skb);
+	queue_work(workq, &skb_work);
+	return 0;
+}
+
+int __init iwch_cm_init(void)
+{
+	skb_queue_head_init(&rxq);
+
+	workq = create_singlethread_workqueue("iw_cxgb3");
+	if (!workq)
+		return -ENOMEM;
+
+	/*
+	 * All upcalls from the T3 Core go to sched() to
+	 * schedule the processing on a work queue.
+	 */
+	t3c_handlers[CPL_ACT_ESTABLISH] = sched;
+	t3c_handlers[CPL_ACT_OPEN_RPL] = sched;
+	t3c_handlers[CPL_RX_DATA] = sched;
+	t3c_handlers[CPL_TX_DMA_ACK] = sched;
+	t3c_handlers[CPL_ABORT_RPL_RSS] = sched;
+	t3c_handlers[CPL_ABORT_RPL] = sched;
+	t3c_handlers[CPL_PASS_OPEN_RPL] = sched;
+	t3c_handlers[CPL_CLOSE_LISTSRV_RPL] = sched;
+	t3c_handlers[CPL_PASS_ACCEPT_REQ] = sched;
+	t3c_handlers[CPL_PASS_ESTABLISH] = sched;
+	t3c_handlers[CPL_PEER_CLOSE] = sched;
+	t3c_handlers[CPL_CLOSE_CON_RPL] = sched;
+	t3c_handlers[CPL_ABORT_REQ_RSS] = sched;
+	t3c_handlers[CPL_RDMA_TERMINATE] = sched;
+	t3c_handlers[CPL_RDMA_EC_STATUS] = sched;
+
+	/*
+	 * These are the real handlers that are called from a
+	 * work queue.
+	 */
+	work_handlers[CPL_ACT_ESTABLISH] = act_establish;
+	work_handlers[CPL_ACT_OPEN_RPL] = act_open_rpl;
+	work_handlers[CPL_RX_DATA] = rx_data;
+	work_handlers[CPL_TX_DMA_ACK] = tx_ack;
+	work_handlers[CPL_ABORT_RPL_RSS] = abort_rpl;
+	work_handlers[CPL_ABORT_RPL] = abort_rpl;
+	work_handlers[CPL_PASS_OPEN_RPL] = pass_open_rpl;
+	work_handlers[CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl;
+	work_handlers[CPL_PASS_ACCEPT_REQ] = pass_accept_req;
+	work_handlers[CPL_PASS_ESTABLISH] = pass_establish;
+	work_handlers[CPL_PEER_CLOSE] = peer_close;
+	work_handlers[CPL_ABORT_REQ_RSS] = peer_abort;
+	work_handlers[CPL_CLOSE_CON_RPL] = close_con_rpl;
+	work_handlers[CPL_RDMA_TERMINATE] = terminate;
+	work_handlers[CPL_RDMA_EC_STATUS] = ec_status;
+	return 0;
+}
+
+void __exit iwch_cm_term(void)
+{
+	flush_workqueue(workq);
+	destroy_workqueue(workq);
+}