/*
- * Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved.
+ * Copyright (c) 2006 - 2009 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
#include <net/neighbour.h>
#include <net/route.h>
#include <net/ip_fib.h>
+#include <net/tcp.h>
#include "nes.h"
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 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 *,
- enum nes_cm_event_type);
+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);
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);
static void print_core(struct nes_cm_core *core);
*/
static int send_mpa_request(struct nes_cm_node *cm_node, struct sk_buff *skb)
{
- int ret;
if (!skb) {
nes_debug(NES_DBG_CM, "skb set to NULL\n");
return -1;
form_cm_frame(skb, cm_node, NULL, 0, &cm_node->mpa_frame,
cm_node->mpa_frame_size, SET_ACK);
- ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0);
- if (ret < 0)
- return ret;
+ return schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0);
+}
- return 0;
+
+
+static int send_mpa_reject(struct nes_cm_node *cm_node)
+{
+ struct sk_buff *skb = NULL;
+
+ 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 */
+ form_cm_frame(skb, cm_node, NULL, 0, &cm_node->mpa_frame,
+ cm_node->mpa_frame_size, 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 len)
+static int parse_mpa(struct nes_cm_node *cm_node, u8 *buffer, u32 *type,
+ u32 len)
{
struct ietf_mpa_frame *mpa_frame;
+ *type = NES_MPA_REQUEST_ACCEPT;
+
/* assume req frame is in tcp data payload */
if (len < sizeof(struct ietf_mpa_frame)) {
nes_debug(NES_DBG_CM, "The received ietf buffer was too small (%x)\n", len);
- return -1;
+ return -EINVAL;
}
mpa_frame = (struct ietf_mpa_frame *)buffer;
cm_node->mpa_frame_size = ntohs(mpa_frame->priv_data_len);
+ /* make sure mpa private data len is less than 512 bytes */
+ if (cm_node->mpa_frame_size > 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 != mpa_version) {
+ nes_debug(NES_DBG_CM, "The received mpa version"
+ " can not be interoperated\n");
+ return -EINVAL;
+ }
+ 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 (cm_node->mpa_frame_size + sizeof(struct ietf_mpa_frame) != len) {
nes_debug(NES_DBG_CM, "The received ietf buffer was not right"
" complete (%x + %x != %x)\n",
- cm_node->mpa_frame_size, (u32)sizeof(struct ietf_mpa_frame), len);
- return -1;
+ cm_node->mpa_frame_size,
+ (u32)sizeof(struct ietf_mpa_frame), 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",
+ cm_node->mpa_frame_size,
+ (u32)sizeof(struct ietf_mpa_frame), len);
+ return -EINVAL;
}
/* copy entire MPA frame to our cm_node's frame */
memcpy(cm_node->mpa_frame_buf, buffer + sizeof(struct ietf_mpa_frame),
cm_node->mpa_frame_size);
+ if (mpa_frame->flags & IETF_MPA_FLAGS_REJECT)
+ *type = NES_MPA_REQUEST_REJECT;
return 0;
}
new_send = kzalloc(sizeof(*new_send), GFP_ATOMIC);
if (!new_send)
- return -1;
+ return -ENOMEM;
/* new_send->timetosend = currenttime */
new_send->retrycount = NES_DEFAULT_RETRYS;
if (type == NES_TIMER_TYPE_CLOSE) {
new_send->timetosend += (HZ/10);
- spin_lock_irqsave(&cm_node->recv_list_lock, flags);
- list_add_tail(&new_send->list, &cm_node->recv_list);
- spin_unlock_irqrestore(&cm_node->recv_list_lock, flags);
+ 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) {
if (ret != NETDEV_TX_OK) {
nes_debug(NES_DBG_CM, "Error sending packet %p "
"(jiffies = %lu)\n", new_send, jiffies);
- atomic_dec(&new_send->skb->users);
new_send->timetosend = jiffies;
+ ret = NETDEV_TX_OK;
} else {
cm_packets_sent++;
if (!send_retrans) {
return ret;
}
+static void nes_retrans_expired(struct nes_cm_node *cm_node)
+{
+ struct iw_cm_id *cm_id = cm_node->cm_id;
+ switch (cm_node->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);
+ cm_node->state = NES_CM_STATE_CLOSED;
+ 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(unsigned long pass)
{
- unsigned long flags, qplockflags;
+ unsigned long flags;
unsigned long nexttimeout = jiffies + NES_LONG_TIME;
- struct iw_cm_id *cm_id;
struct nes_cm_node *cm_node;
struct nes_timer_entry *send_entry, *recv_entry;
- struct list_head *list_core, *list_core_temp;
- struct list_head *list_node, *list_node_temp;
+ struct list_head *list_core_temp;
+ struct list_head *list_node;
struct nes_cm_core *cm_core = g_cm_core;
- struct nes_qp *nesqp;
u32 settimer = 0;
+ unsigned long timetosend;
int ret = NETDEV_TX_OK;
- enum nes_cm_node_state last_state;
struct list_head timer_list;
INIT_LIST_HEAD(&timer_list);
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 (!list_empty(&cm_node->recv_list) || (cm_node->send_entry)) {
+ if ((cm_node->recv_entry) || (cm_node->send_entry)) {
add_ref_cm_node(cm_node);
list_add(&cm_node->timer_entry, &timer_list);
}
list_for_each_safe(list_node, list_core_temp, &timer_list) {
cm_node = container_of(list_node, struct nes_cm_node,
timer_entry);
- spin_lock_irqsave(&cm_node->recv_list_lock, flags);
- list_for_each_safe(list_core, list_node_temp,
- &cm_node->recv_list) {
- recv_entry = container_of(list_core,
- struct nes_timer_entry, list);
- if (!recv_entry)
- break;
+ recv_entry = cm_node->recv_entry;
+
+ if (recv_entry) {
if (time_after(recv_entry->timetosend, jiffies)) {
if (nexttimeout > recv_entry->timetosend ||
- !settimer) {
+ !settimer) {
nexttimeout = recv_entry->timetosend;
settimer = 1;
}
- continue;
- }
- list_del(&recv_entry->list);
- cm_id = cm_node->cm_id;
- spin_unlock_irqrestore(&cm_node->recv_list_lock, flags);
- nesqp = (struct nes_qp *)recv_entry->skb;
- 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));
- }
- if (cm_id)
- cm_id->rem_ref(cm_id);
-
- kfree(recv_entry);
- spin_lock_irqsave(&cm_node->recv_list_lock, flags);
+ } else
+ handle_recv_entry(cm_node, 1);
}
- spin_unlock_irqrestore(&cm_node->recv_list_lock, flags);
spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
do {
nexttimeout =
send_entry->timetosend;
settimer = 1;
- break;
}
} else {
free_retrans_entry(cm_node);
- break;
}
+ break;
}
if ((cm_node->state == NES_CM_STATE_TSA) ||
if (!send_entry->retranscount ||
!send_entry->retrycount) {
cm_packets_dropped++;
- last_state = cm_node->state;
- cm_node->state = NES_CM_STATE_CLOSED;
free_retrans_entry(cm_node);
+
spin_unlock_irqrestore(
&cm_node->retrans_list_lock, flags);
- if (last_state == NES_CM_STATE_SYN_RCVD)
- rem_ref_cm_node(cm_core, cm_node);
- else
- create_event(cm_node,
- NES_CM_EVENT_ABORTED);
+ nes_retrans_expired(cm_node);
+ cm_node->state = NES_CM_STATE_CLOSED;
spin_lock_irqsave(&cm_node->retrans_list_lock,
flags);
break;
nes_debug(NES_DBG_CM, "rexmit failed for "
"node=%p\n", cm_node);
cm_packets_bounced++;
- atomic_dec(&send_entry->skb->users);
send_entry->retrycount--;
nexttimeout = jiffies + NES_SHORT_TIME;
settimer = 1;
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 +
- NES_RETRY_TIMEOUT;
+ min(timetosend, NES_MAX_TIMEOUT);
if (nexttimeout > send_entry->timetosend ||
!settimer) {
nexttimeout = send_entry->timetosend;
spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
rem_ref_cm_node(cm_node->cm_core, cm_node);
- if (ret != NETDEV_TX_OK) {
- nes_debug(NES_DBG_CM, "rexmit failed for cm_node=%p\n",
- cm_node);
- break;
- }
}
if (settimer) {
skb = dev_alloc_skb(MAX_CM_BUFFER);
if (!skb) {
nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n");
- return -1;
+ return -ENOMEM;
}
form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, flags);
unsigned long flags;
struct list_head *hte;
struct nes_cm_node *cm_node;
- __be32 tmp_addr = cpu_to_be32(loc_addr);
/* get a handle on the hte */
hte = &cm_core->connected_nodes;
- nes_debug(NES_DBG_CM, "Searching for an owner node: %pI4:%x from core %p->%p\n",
- &tmp_addr, loc_port, cm_core, hte);
-
/* 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) {
{
unsigned long flags;
struct nes_cm_listener *listen_node;
- __be32 tmp_addr = cpu_to_be32(dst_addr);
/* walk list and find cm_node associated with this session ID */
spin_lock_irqsave(&cm_core->listen_list_lock, flags);
}
spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
- nes_debug(NES_DBG_CM, "Unable to find listener for %pI4:%x\n",
- &tmp_addr, dst_port);
-
/* no listener */
return NULL;
}
static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core,
struct nes_cm_listener *listener, int free_hanging_nodes)
{
- int ret = 1;
+ int ret = -EINVAL;
+ int err = 0;
unsigned long flags;
struct list_head *list_pos = NULL;
struct list_head *list_temp = NULL;
list_for_each_safe(list_pos, list_temp, &reset_list) {
cm_node = container_of(list_pos, struct nes_cm_node,
- reset_entry);
- cleanup_retrans_entry(cm_node);
- send_reset(cm_node, NULL);
- rem_ref_cm_node(cm_node->cm_core, 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;
+ cm_event_connect_error(&event);
+ cm_node->state = NES_CM_STATE_LISTENER_DESTROYED;
+ loopback->state = NES_CM_STATE_CLOSED;
+
+ rem_ref_cm_node(cm_node->cm_core,
+ cm_node);
+
+ }
+ }
+ }
}
spin_lock_irqsave(&cm_core->listen_list_lock, flags);
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);
}
memset(&fl, 0, sizeof fl);
fl.nl_u.ip4_u.daddr = htonl(dst_ip);
if (ip_route_output_key(&init_net, &rt, &fl)) {
- printk("%s: ip_route_output_key failed for 0x%08X\n",
+ printk(KERN_ERR "%s: ip_route_output_key failed for 0x%08X\n",
__func__, dst_ip);
return rc;
}
cm_node->cm_id);
spin_lock_init(&cm_node->retrans_list_lock);
- INIT_LIST_HEAD(&cm_node->recv_list);
- spin_lock_init(&cm_node->recv_list_lock);
cm_node->loopbackpartner = NULL;
atomic_set(&cm_node->ref_count, 1);
static int rem_ref_cm_node(struct nes_cm_core *cm_core,
struct nes_cm_node *cm_node)
{
- unsigned long flags, qplockflags;
- struct nes_timer_entry *recv_entry;
- struct iw_cm_id *cm_id;
- struct list_head *list_core, *list_node_temp;
+ unsigned long flags;
struct nes_qp *nesqp;
if (!cm_node)
atomic_dec(&cm_node->listener->pend_accepts_cnt);
BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0);
}
- BUG_ON(cm_node->send_entry);
- spin_lock_irqsave(&cm_node->recv_list_lock, flags);
- list_for_each_safe(list_core, list_node_temp, &cm_node->recv_list) {
- recv_entry = container_of(list_core, struct nes_timer_entry,
- list);
- list_del(&recv_entry->list);
- cm_id = cm_node->cm_id;
- spin_unlock_irqrestore(&cm_node->recv_list_lock, flags);
- nesqp = (struct nes_qp *)recv_entry->skb;
- spin_lock_irqsave(&nesqp->lock, qplockflags);
- if (nesqp->cm_id) {
- nes_debug(NES_DBG_CM, "QP%u: cm_id = %p: HIT A "
- "NES_TIMER_TYPE_CLOSE with something to do!\n",
- nesqp->hwqp.qp_id, cm_id);
- 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: HIT A "
- "NES_TIMER_TYPE_CLOSE with nothing to do!\n",
- nesqp->hwqp.qp_id, cm_id);
- }
- cm_id->rem_ref(cm_id);
-
- kfree(recv_entry);
- spin_lock_irqsave(&cm_node->recv_list_lock, flags);
- }
- spin_unlock_irqrestore(&cm_node->recv_list_lock, flags);
-
+ 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 {
cm_node->nesqp = NULL;
}
- cm_node->freed = 1;
kfree(cm_node);
return 0;
}
dev_kfree_skb_any(skb);
}
-static void handle_fin_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
- struct tcphdr *tcph)
+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));
- cm_node->tcp_cntxt.rcv_nxt++;
- cleanup_retrans_entry(cm_node);
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_MPAREQ_SENT:
+ 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, skb);
+ send_fin(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, skb);
+ send_ack(cm_node, NULL);
+ /* Wait for ACK as this is simultanous 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, skb);
+ 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);
- drop_packet(skb);
break;
}
}
passive_state = atomic_add_return(1, &cm_node->passive_state);
if (passive_state == NES_SEND_RESET_EVENT)
create_event(cm_node, NES_CM_EVENT_RESET);
- cleanup_retrans_entry(cm_node);
cm_node->state = NES_CM_STATE_CLOSED;
dev_kfree_skb_any(skb);
break;
active_open_err(cm_node, skb, reset);
break;
case NES_CM_STATE_CLOSED:
- cleanup_retrans_entry(cm_node);
+ drop_packet(skb);
+ break;
+ case NES_CM_STATE_FIN_WAIT1:
+ case NES_CM_STATE_LAST_ACK:
+ cm_node->cm_id->rem_ref(cm_node->cm_id);
+ 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:
}
}
-static void handle_rcv_mpa(struct nes_cm_node *cm_node, struct sk_buff *skb,
- enum nes_cm_event_type type)
+
+static void handle_rcv_mpa(struct nes_cm_node *cm_node, struct sk_buff *skb)
{
- int ret;
+ int ret = 0;
int datasize = skb->len;
u8 *dataloc = skb->data;
- ret = parse_mpa(cm_node, dataloc, datasize);
- if (ret < 0) {
+
+ 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 (type == NES_CM_EVENT_CONNECTED) {
+ 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,
} else {
passive_open_err(cm_node, skb, 1);
}
- } else {
+ 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);
- dev_kfree_skb_any(skb);
- if (type == NES_CM_EVENT_CONNECTED)
+ 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;
- else
- atomic_set(&cm_node->passive_state,
- NES_PASSIVE_STATE_INDICATED);
- create_event(cm_node, type);
+ }
+ break;
+ default:
+ WARN_ON(1);
+ break;
}
- return ;
+ 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)
rcv_wnd = cm_node->tcp_cntxt.rcv_wnd;
if (ack_seq != loc_seq_num)
err = 1;
- else if ((seq + rcv_wnd) < rcv_nxt)
+ 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 "
break;
case NES_CM_STATE_LISTENING:
/* Passive OPEN */
- cm_node->accept_pend = 1;
- atomic_inc(&cm_node->listener->pend_accepts_cnt);
if (atomic_read(&cm_node->listener->pend_accepts_cnt) >
cm_node->listener->backlog) {
nes_debug(NES_DBG_CM, "drop syn due to backlog "
}
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;
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;
}
}
-static void handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
+static int handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
struct tcphdr *tcph)
{
int datasize = 0;
u32 inc_sequence;
u32 rem_seq_ack;
u32 rem_seq;
- int ret;
+ int ret = 0;
int optionsize;
- u32 temp_seq = cm_node->tcp_cntxt.loc_seq_num;
-
optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
- cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
if (check_seq(cm_node, tcph, skb))
- return;
+ return -EINVAL;
skb_pull(skb, tcph->doff << 2);
inc_sequence = ntohl(tcph->seq);
rem_seq = ntohl(tcph->seq);
rem_seq_ack = ntohl(tcph->ack_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->tcp_cntxt.loc_seq_num = temp_seq;
- if (cm_node->tcp_cntxt.rem_ack_num !=
- cm_node->tcp_cntxt.loc_seq_num) {
- nes_debug(NES_DBG_CM, "rem_ack_num != loc_seq_num\n");
- cleanup_retrans_entry(cm_node);
- send_reset(cm_node, skb);
- return;
- }
cm_node->state = NES_CM_STATE_ESTABLISHED;
if (datasize) {
cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
- cm_node->state = NES_CM_STATE_MPAREQ_RCVD;
- handle_rcv_mpa(cm_node, skb, NES_CM_EVENT_MPA_REQ);
- } else { /* rcvd ACK only */
+ handle_rcv_mpa(cm_node, skb);
+ } else /* rcvd ACK only */
dev_kfree_skb_any(skb);
- cleanup_retrans_entry(cm_node);
- }
break;
case NES_CM_STATE_ESTABLISHED:
/* Passive OPEN */
- /* We expect mpa frame to be received only */
+ cleanup_retrans_entry(cm_node);
if (datasize) {
cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
- cm_node->state = NES_CM_STATE_MPAREQ_RCVD;
- handle_rcv_mpa(cm_node, skb,
- NES_CM_EVENT_MPA_REQ);
+ handle_rcv_mpa(cm_node, skb);
} else
drop_packet(skb);
break;
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, NES_CM_EVENT_CONNECTED);
- } else { /* Could be just an ack pkt.. */
- cleanup_retrans_entry(cm_node);
+ handle_rcv_mpa(cm_node, skb);
+ } else /* Could be just an ack pkt.. */
dev_kfree_skb_any(skb);
- }
break;
case NES_CM_STATE_LISTENING:
case NES_CM_STATE_CLOSED:
cleanup_retrans_entry(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_LAST_ACK:
- case NES_CM_STATE_CLOSING:
case NES_CM_STATE_UNKNOWN:
default:
+ cleanup_retrans_entry(cm_node);
drop_packet(skb);
break;
}
+ return ret;
}
{
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 "
pkt_type = NES_PKT_TYPE_SYN;
if (tcph->ack)
pkt_type = NES_PKT_TYPE_SYNACK;
- } else if (tcph->fin)
- pkt_type = NES_PKT_TYPE_FIN;
- else if (tcph->ack)
+ } 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_synack_pkt(cm_node, skb, tcph);
break;
case NES_PKT_TYPE_ACK:
- handle_ack_pkt(cm_node, skb, tcph);
+ 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;
- case NES_PKT_TYPE_FIN:
- handle_fin_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;
}
if (!cm_node)
return NULL;
mpa_frame = &cm_node->mpa_frame;
- strcpy(mpa_frame->key, IEFT_MPA_KEY_REQ);
+ memcpy(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE);
mpa_frame->flags = IETF_MPA_FLAGS_CRC;
mpa_frame->rev = IETF_MPA_VERSION;
mpa_frame->priv_data_len = htons(private_data_len);
if (loopbackremotelistener == NULL) {
create_event(cm_node, NES_CM_EVENT_ABORTED);
} else {
- atomic_inc(&cm_loopbacks);
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.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;
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;
struct ietf_mpa_frame *mpa_frame, 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);
return ret;
cleanup_retrans_entry(cm_node);
- passive_state = atomic_add_return(1, &cm_node->passive_state);
- cm_node->state = NES_CM_STATE_CLOSED;
- if (passive_state == NES_SEND_RESET_EVENT)
- rem_ref_cm_node(cm_core, cm_node);
- else
- ret = send_reset(cm_node, NULL);
+ 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;
}
case NES_CM_STATE_CLOSING:
ret = -1;
break;
+ case NES_CM_STATE_MPAREJ_RCVD:
case NES_CM_STATE_LISTENING:
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:
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;
+ 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;
*/
int nes_cm_disconn(struct nes_qp *nesqp)
{
- unsigned long flags;
-
- spin_lock_irqsave(&nesqp->lock, flags);
- if (nesqp->disconn_pending == 0) {
- nesqp->disconn_pending++;
- spin_unlock_irqrestore(&nesqp->lock, flags);
- /* init our disconnect work element, to */
- INIT_WORK(&nesqp->disconn_work, nes_disconnect_worker);
+ struct disconn_work *work;
- queue_work(g_cm_core->disconn_wq, &nesqp->disconn_work);
- } else
- spin_unlock_irqrestore(&nesqp->lock, flags);
+ 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;
}
*/
static void nes_disconnect_worker(struct work_struct *work)
{
- struct nes_qp *nesqp = container_of(work, struct nes_qp, disconn_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);
}
u16 last_ae;
u8 original_hw_tcp_state;
u8 original_ibqp_state;
- u8 issued_disconnect_reset = 0;
+ enum iw_cm_event_type disconn_status = IW_CM_EVENT_STATUS_OK;
+ 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");
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;
+ 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 = IW_CM_EVENT_STATUS_RESET;
+ }
+
+ 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);
- nes_debug(NES_DBG_CM, "set ibqp_state=%u\n", nesqp->ibqp_state);
+ if (nesqp->term_flags) {
+ ibevent.device = nesqp->ibqp.device;
+ ibevent.event = nesqp->terminate_eventtype;
+ ibevent.element.qp = &nesqp->ibqp;
+ nesqp->ibqp.event_handler(&ibevent, nesqp->ibqp.qp_context);
+ }
+ }
- if ((nesqp->cm_id) && (cm_id->event_handler)) {
- 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))) {
+ if ((cm_id) && (cm_id->event_handler)) {
+ if (issue_disconn) {
atomic_inc(&cm_disconnects);
cm_event.event = IW_CM_EVENT_DISCONNECT;
- if (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET) {
- cm_event.status = IW_CM_EVENT_STATUS_RESET;
- nes_debug(NES_DBG_CM, "Generating a CM "
- "Disconnect Event (status reset) for "
- "QP%u, cm_id = %p. \n",
- nesqp->hwqp.qp_id, cm_id);
- } else
- cm_event.status = IW_CM_EVENT_STATUS_OK;
-
+ cm_event.status = disconn_status;
cm_event.local_addr = cm_id->local_addr;
cm_event.remote_addr = cm_id->remote_addr;
cm_event.private_data = NULL;
nesqp->hwqp.sq_tail, cm_id,
atomic_read(&nesqp->refcount));
- spin_unlock_irqrestore(&nesqp->lock, flags);
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);
- spin_lock_irqsave(&nesqp->lock, flags);
}
- nesqp->disconn_pending = 0;
- /* There might have been another AE while the lock was released */
- original_hw_tcp_state = nesqp->hw_tcp_state;
- original_ibqp_state = nesqp->ibqp_state;
- last_ae = nesqp->last_aeq;
-
- if ((issued_disconnect_reset == 0) && (nesqp->cm_id) &&
- ((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))) {
+ if (issue_close) {
atomic_inc(&cm_closes);
- nesqp->cm_id = NULL;
- nesqp->in_disconnect = 0;
- spin_unlock_irqrestore(&nesqp->lock, flags);
nes_disconnect(nesqp, 1);
cm_id->provider_data = nesqp;
}
cm_id->rem_ref(cm_id);
-
- spin_lock_irqsave(&nesqp->lock, flags);
- if (nesqp->flush_issued == 0) {
- nesqp->flush_issued = 1;
- spin_unlock_irqrestore(&nesqp->lock, flags);
- flush_wqes(nesvnic->nesdev, nesqp,
- NES_CQP_FLUSH_RQ, 1);
- } else
- spin_unlock_irqrestore(&nesqp->lock, flags);
- } else {
- cm_id = nesqp->cm_id;
- spin_unlock_irqrestore(&nesqp->lock, flags);
- /* check to see if the inbound reset beat the outbound reset */
- if ((!cm_id) && (last_ae==NES_AEQE_AEID_RESET_SENT)) {
- nes_debug(NES_DBG_CM, "QP%u: Decing refcount "
- "due to inbound reset beating the "
- "outbound reset.\n", nesqp->hwqp.qp_id);
- }
}
- } else {
- nesqp->disconn_pending = 0;
- spin_unlock_irqrestore(&nesqp->lock, flags);
}
return 0;
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",
atomic_read(&nesvnic->netdev->refcnt));
} 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+sizeof(struct ietf_mpa_frame),
nesqp->ietf_frame, nesqp->ietf_frame_pbase);
u32 crc_value;
int ret;
int passive_state;
+ struct nes_ib_device *nesibdev;
+ struct ib_mr *ibmr = NULL;
+ struct ib_phys_buf ibphysbuf;
+ struct nes_pd *nespd;
+ u64 tagged_offset;
ibqp = nes_get_qp(cm_id->device, conn_param->qpn);
if (!ibqp)
"%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;
+ }
+
/* associate the node with the QP */
nesqp->cm_node = (void *)cm_node;
cm_node->nesqp = nesqp;
- nes_add_ref(&nesqp->ibqp);
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);
if (cm_id->remote_addr.sin_addr.s_addr !=
cm_id->local_addr.sin_addr.s_addr) {
u64temp = (unsigned long)nesqp;
+ nesibdev = nesvnic->nesibdev;
+ nespd = nesqp->nespd;
+ ibphysbuf.addr = nesqp->ietf_frame_pbase;
+ ibphysbuf.size = conn_param->private_data_len +
+ sizeof(struct ietf_mpa_frame);
+ tagged_offset = (u64)(unsigned long)nesqp->ietf_frame;
+ ibmr = nesibdev->ibdev.reg_phys_mr((struct ib_pd *)nespd,
+ &ibphysbuf, 1,
+ IB_ACCESS_LOCAL_WRITE,
+ &tagged_offset);
+ if (!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+sizeof(struct ietf_mpa_frame),
+ nesqp->ietf_frame, nesqp->ietf_frame_pbase);
+ return -ENOMEM;
+ }
+
+ 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,
wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] =
cpu_to_le32(conn_param->private_data_len +
sizeof(struct ietf_mpa_frame));
- wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_LOW_IDX] =
- cpu_to_le32((u32)nesqp->ietf_frame_pbase);
- wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_HIGH_IDX] =
- cpu_to_le32((u32)((u64)nesqp->ietf_frame_pbase >> 32));
+ set_wqe_64bit_value(wqe->wqe_words,
+ NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
+ (u64)(unsigned long)nesqp->ietf_frame);
wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] =
cpu_to_le32(conn_param->private_data_len +
sizeof(struct ietf_mpa_frame));
- wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 0;
+ wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = ibmr->lkey;
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_LSMM_PRESENT |
- NES_QPCONTEXT_ORDIRD_WRPDU |
- NES_QPCONTEXT_ORDIRD_ALSMM));
+ cpu_to_le32(NES_QPCONTEXT_ORDIRD_WRPDU);
}
nesqp->skip_lsmm = 1;
sizeof(struct ietf_mpa_frame));
- /* notify OF layer that accept event was successfull */
+ /* 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 = IW_CM_EVENT_STATUS_ACCEPTED;
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;
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;
cm_node->mpa_frame_size = sizeof(struct ietf_mpa_frame) + pdata_len;
- strcpy(&cm_node->mpa_frame.key[0], IEFT_MPA_KEY_REP);
- memcpy(&cm_node->mpa_frame.priv_data, pdata, pdata_len);
+ if (cm_node->mpa_frame_size > MAX_CM_BUFFER)
+ return -EINVAL;
+
+ memcpy(&cm_node->mpa_frame.key[0], IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE);
+ if (loopback) {
+ memcpy(&loopback->mpa_frame.priv_data, pdata, pdata_len);
+ loopback->mpa_frame.priv_data_len = pdata_len;
+ loopback->mpa_frame_size = sizeof(struct ietf_mpa_frame) +
+ pdata_len;
+ } else {
+ memcpy(&cm_node->mpa_frame.priv_data, pdata, pdata_len);
+ cm_node->mpa_frame.priv_data_len = cpu_to_be16(pdata_len);
+ }
- cm_node->mpa_frame.priv_data_len = cpu_to_be16(pdata_len);
cm_node->mpa_frame.rev = mpa_version;
cm_node->mpa_frame.flags = IETF_MPA_FLAGS_CRC | IETF_MPA_FLAGS_REJECT;
- cm_core->api->reject(cm_core, &cm_node->mpa_frame, cm_node);
-
- return 0;
+ return cm_core->api->reject(cm_core, &cm_node->mpa_frame, cm_node);
}
struct nes_device *nesdev;
struct nes_cm_node *cm_node;
struct nes_cm_info cm_info;
+ int apbvt_set = 0;
ibqp = nes_get_qp(cm_id->device, conn_param->qpn);
if (!ibqp)
if (!nesdev)
return -EINVAL;
+ if (!(cm_id->local_addr.sin_port) || !(cm_id->remote_addr.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),
conn_param->private_data_len);
if (cm_id->local_addr.sin_addr.s_addr !=
- cm_id->remote_addr.sin_addr.s_addr)
+ cm_id->remote_addr.sin_addr.s_addr) {
nes_manage_apbvt(nesvnic, ntohs(cm_id->local_addr.sin_port),
PCI_FUNC(nesdev->pcidev->devfn), NES_MANAGE_APBVT_ADD);
+ apbvt_set = 1;
+ }
/* set up the connection params for the node */
cm_info.loc_addr = htonl(cm_id->local_addr.sin_addr.s_addr);
conn_param->private_data_len, (void *)conn_param->private_data,
&cm_info);
if (!cm_node) {
- if (cm_id->local_addr.sin_addr.s_addr !=
- cm_id->remote_addr.sin_addr.s_addr)
+ if (apbvt_set)
nes_manage_apbvt(nesvnic, ntohs(cm_id->local_addr.sin_port),
PCI_FUNC(nesdev->pcidev->devfn),
NES_MANAGE_APBVT_DEL);
return -ENOMEM;
}
- cm_node->apbvt_set = 1;
+ cm_node->apbvt_set = apbvt_set;
nesqp->cm_node = cm_node;
cm_node->nesqp = nesqp;
nes_add_ref(&nesqp->ibqp);
nesqp->cm_id = NULL;
cm_id->provider_data = NULL;
cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
- cm_event.status = IW_CM_EVENT_STATUS_REJECTED;
+ cm_event.status = -ECONNRESET;
cm_event.provider_data = cm_id->provider_data;
cm_event.local_addr = cm_id->local_addr;
cm_event.remote_addr = cm_id->remote_addr;
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.private_data = NULL;
cm_event.private_data_len = 0;
- ret = cm_id->event_handler(cm_id, &cm_event);
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 = IW_CM_EVENT_STATUS_OK;
cm_event.remote_addr.sin_family = AF_INET;
cm_event.remote_addr.sin_port = htons(event->cm_info.rem_port);
cm_event.remote_addr.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;
+
+ 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;
+
+ 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.local_addr.sin_family = AF_INET;
+ cm_event.local_addr.sin_port = htons(event->cm_info.loc_port);
+ cm_event.local_addr.sin_addr.s_addr = htonl(event->cm_info.loc_addr);
+
+ cm_event.remote_addr.sin_family = AF_INET;
+ cm_event.remote_addr.sin_port = htons(event->cm_info.rem_port);
+ cm_event.remote_addr.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;
+ 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.local_addr.sin_addr.s_addr,
+ cm_event.remote_addr.sin_addr.s_addr);
ret = cm_id->event_handler(cm_id, &cm_event);
if (ret)
- printk("%s[%u] OFA CM event_handler returned, ret=%d\n",
+ printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n",
__func__, __LINE__, ret);
return;
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))
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff