/*
- * 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 <linux/random.h>
#include <linux/list.h>
#include <linux/threads.h>
-
+#include <net/arp.h>
#include <net/neighbour.h>
#include <net/route.h>
#include <net/ip_fib.h>
+#include <net/tcp.h>
#include "nes.h"
atomic_t cm_accel_dropped_pkts;
atomic_t cm_resets_recvd;
-static inline int mini_cm_accelerated(struct nes_cm_core *, struct nes_cm_node *);
+static inline int mini_cm_accelerated(struct nes_cm_core *,
+ struct nes_cm_node *);
static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *,
- struct nes_vnic *, struct nes_cm_info *);
+ struct nes_vnic *, struct nes_cm_info *);
+static int mini_cm_del_listen(struct nes_cm_core *, struct nes_cm_listener *);
+static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *,
+ struct nes_vnic *, u16, void *, struct nes_cm_info *);
+static int mini_cm_close(struct nes_cm_core *, struct nes_cm_node *);
+static int mini_cm_accept(struct nes_cm_core *, struct ietf_mpa_frame *,
+ struct nes_cm_node *);
+static int mini_cm_reject(struct nes_cm_core *, struct ietf_mpa_frame *,
+ struct nes_cm_node *);
+static int mini_cm_recv_pkt(struct nes_cm_core *, struct nes_vnic *,
+ struct sk_buff *);
+static int mini_cm_dealloc_core(struct nes_cm_core *);
+static int mini_cm_get(struct nes_cm_core *);
+static int mini_cm_set(struct nes_cm_core *, u32, u32);
+
+static void form_cm_frame(struct sk_buff *, struct nes_cm_node *,
+ void *, u32, void *, u32, u8);
static int add_ref_cm_node(struct nes_cm_node *);
static int rem_ref_cm_node(struct nes_cm_core *, struct nes_cm_node *);
-static int mini_cm_del_listen(struct nes_cm_core *, struct nes_cm_listener *);
+static int nes_cm_disconn_true(struct nes_qp *);
+static int nes_cm_post_event(struct nes_cm_event *event);
+static int nes_disconnect(struct nes_qp *nesqp, int abrupt);
+static void nes_disconnect_worker(struct work_struct *work);
+
+static int send_mpa_request(struct nes_cm_node *, struct sk_buff *);
+static int send_mpa_reject(struct nes_cm_node *);
+static int send_syn(struct nes_cm_node *, u32, struct sk_buff *);
+static int send_reset(struct nes_cm_node *, struct sk_buff *);
+static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb);
+static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb);
+static void process_packet(struct nes_cm_node *, struct sk_buff *,
+ struct nes_cm_core *);
+
+static void active_open_err(struct nes_cm_node *, struct sk_buff *, int);
+static void passive_open_err(struct nes_cm_node *, struct sk_buff *, int);
+static void cleanup_retrans_entry(struct nes_cm_node *);
+static void handle_rcv_mpa(struct nes_cm_node *, struct sk_buff *);
+static void free_retrans_entry(struct nes_cm_node *cm_node);
+static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph,
+ struct sk_buff *skb, int optionsize, int passive);
+
+/* CM event handler functions */
+static void cm_event_connected(struct nes_cm_event *);
+static void cm_event_connect_error(struct nes_cm_event *);
+static void cm_event_reset(struct nes_cm_event *);
+static void cm_event_mpa_req(struct nes_cm_event *);
+static void cm_event_mpa_reject(struct nes_cm_event *);
+static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node);
+
+static void print_core(struct nes_cm_core *core);
/* External CM API Interface */
/* instance of function pointers for client API */
mini_cm_set
};
-struct nes_cm_core *g_cm_core;
+static struct nes_cm_core *g_cm_core;
atomic_t cm_connects;
atomic_t cm_accepts;
event->cm_info.loc_port = cm_node->loc_port;
event->cm_info.cm_id = cm_node->cm_id;
- nes_debug(NES_DBG_CM, "Created event=%p, type=%u, dst_addr=%08x[%x],"
- " src_addr=%08x[%x]\n",
- event, type,
- event->cm_info.loc_addr, event->cm_info.loc_port,
- event->cm_info.rem_addr, event->cm_info.rem_port);
+ nes_debug(NES_DBG_CM, "cm_node=%p Created event=%p, type=%u, "
+ "dst_addr=%08x[%x], src_addr=%08x[%x]\n",
+ cm_node, event, type, event->cm_info.loc_addr,
+ event->cm_info.loc_port, event->cm_info.rem_addr,
+ event->cm_info.rem_port);
nes_cm_post_event(event);
return event;
/**
* send_mpa_request
*/
-int send_mpa_request(struct nes_cm_node *cm_node)
+static int send_mpa_request(struct nes_cm_node *cm_node, struct sk_buff *skb)
{
- struct sk_buff *skb;
- int ret;
-
- skb = get_free_pkt(cm_node);
if (!skb) {
- nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n");
+ 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);
+}
+
+
+
+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;
}
- return 0;
+ /* 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;
}
/**
- * handle_exception_pkt - process an exception packet.
- * We have been in a TSA state, and we have now received SW
- * TCP/IP traffic should be a FIN request or IP pkt with options
- */
-static int handle_exception_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb)
-{
- int ret = 0;
- struct tcphdr *tcph = tcp_hdr(skb);
-
- /* first check to see if this a FIN pkt */
- if (tcph->fin) {
- /* we need to ACK the FIN request */
- send_ack(cm_node);
-
- /* check which side we are (client/server) and set next state accordingly */
- if (cm_node->tcp_cntxt.client)
- cm_node->state = NES_CM_STATE_CLOSING;
- else {
- /* we are the server side */
- cm_node->state = NES_CM_STATE_CLOSE_WAIT;
- /* since this is a self contained CM we don't wait for */
- /* an APP to close us, just send final FIN immediately */
- ret = send_fin(cm_node, NULL);
- cm_node->state = NES_CM_STATE_LAST_ACK;
- }
- } else {
- ret = -EINVAL;
- }
-
- return ret;
-}
-
-
-/**
* form_cm_frame - get a free packet and build empty frame Use
* node info to build.
*/
-struct sk_buff *form_cm_frame(struct sk_buff *skb, struct nes_cm_node *cm_node,
- void *options, u32 optionsize, void *data, u32 datasize, u8 flags)
+static void form_cm_frame(struct sk_buff *skb,
+ struct nes_cm_node *cm_node, void *options, u32 optionsize,
+ void *data, u32 datasize, u8 flags)
{
struct tcphdr *tcph;
struct iphdr *iph;
cm_node->tcp_cntxt.loc_seq_num++;
tcph->syn = 1;
} else
- cm_node->tcp_cntxt.loc_seq_num += datasize; /* data (no headers) */
+ cm_node->tcp_cntxt.loc_seq_num += datasize;
- if (flags & SET_FIN)
+ if (flags & SET_FIN) {
+ cm_node->tcp_cntxt.loc_seq_num++;
tcph->fin = 1;
+ }
if (flags & SET_RST)
tcph->rst = 1;
skb_shinfo(skb)->nr_frags = 0;
cm_packets_created++;
- return skb;
}
if (!core)
return;
nes_debug(NES_DBG_CM, "---------------------------------------------\n");
- nes_debug(NES_DBG_CM, "Session ID : %u \n", atomic_read(&core->session_id));
nes_debug(NES_DBG_CM, "State : %u \n", core->state);
- nes_debug(NES_DBG_CM, "Tx Free cnt : %u \n", skb_queue_len(&core->tx_free_list));
nes_debug(NES_DBG_CM, "Listen Nodes : %u \n", atomic_read(&core->listen_node_cnt));
nes_debug(NES_DBG_CM, "Active Nodes : %u \n", atomic_read(&core->node_cnt));
int close_when_complete)
{
unsigned long flags;
- struct nes_cm_core *cm_core;
+ struct nes_cm_core *cm_core = cm_node->cm_core;
struct nes_timer_entry *new_send;
int ret = 0;
u32 was_timer_set;
- if (!cm_node)
- return -EINVAL;
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;
new_send->close_when_complete = close_when_complete;
if (type == NES_TIMER_TYPE_CLOSE) {
- new_send->timetosend += (HZ/2); /* TODO: decide on the correct value here */
- 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);
+ new_send->timetosend += (HZ/10);
+ if (cm_node->recv_entry) {
+ kfree(new_send);
+ WARN_ON(1);
+ return -EINVAL;
+ }
+ cm_node->recv_entry = new_send;
}
if (type == NES_TIMER_TYPE_SEND) {
new_send->seq_num = ntohl(tcp_hdr(skb)->seq);
atomic_inc(&new_send->skb->users);
+ spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
+ cm_node->send_entry = new_send;
+ add_ref_cm_node(cm_node);
+ spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
+ new_send->timetosend = jiffies + NES_RETRY_TIMEOUT;
ret = nes_nic_cm_xmit(new_send->skb, cm_node->netdev);
if (ret != NETDEV_TX_OK) {
- nes_debug(NES_DBG_CM, "Error sending packet %p (jiffies = %lu)\n",
- new_send, jiffies);
- atomic_dec(&new_send->skb->users);
+ nes_debug(NES_DBG_CM, "Error sending packet %p "
+ "(jiffies = %lu)\n", new_send, jiffies);
new_send->timetosend = jiffies;
+ ret = NETDEV_TX_OK;
} else {
cm_packets_sent++;
if (!send_retrans) {
+ cleanup_retrans_entry(cm_node);
if (close_when_complete)
- rem_ref_cm_node(cm_node->cm_core, cm_node);
- dev_kfree_skb_any(new_send->skb);
- kfree(new_send);
+ rem_ref_cm_node(cm_core, cm_node);
return ret;
}
- new_send->timetosend = jiffies + NES_RETRY_TIMEOUT;
}
- spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
- list_add_tail(&new_send->list, &cm_node->retrans_list);
- spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
}
- if (type == NES_TIMER_TYPE_RECV) {
- new_send->seq_num = ntohl(tcp_hdr(skb)->seq);
- new_send->timetosend = jiffies;
- 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);
- }
- cm_core = cm_node->cm_core;
was_timer_set = timer_pending(&cm_core->tcp_timer);
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
*/
-void nes_cm_timer_tick(unsigned long pass)
+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;
- struct sk_buff *skb;
u32 settimer = 0;
+ unsigned long timetosend;
int ret = NETDEV_TX_OK;
- int node_done;
+ struct list_head timer_list;
+ INIT_LIST_HEAD(&timer_list);
spin_lock_irqsave(&cm_core->ht_lock, flags);
- list_for_each_safe(list_node, list_core_temp, &cm_core->connected_nodes) {
+ list_for_each_safe(list_node, list_core_temp,
+ &cm_core->connected_nodes) {
cm_node = container_of(list_node, struct nes_cm_node, list);
- add_ref_cm_node(cm_node);
- spin_unlock_irqrestore(&cm_core->ht_lock, flags);
- 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 ((time_after(recv_entry->timetosend, jiffies)) &&
- (recv_entry->type == NES_TIMER_TYPE_CLOSE)) {
- if (nexttimeout > recv_entry->timetosend || !settimer) {
+ if ((cm_node->recv_entry) || (cm_node->send_entry)) {
+ add_ref_cm_node(cm_node);
+ list_add(&cm_node->timer_entry, &timer_list);
+ }
+ }
+ spin_unlock_irqrestore(&cm_core->ht_lock, flags);
+
+ list_for_each_safe(list_node, list_core_temp, &timer_list) {
+ cm_node = container_of(list_node, struct nes_cm_node,
+ timer_entry);
+ recv_entry = cm_node->recv_entry;
+
+ if (recv_entry) {
+ if (time_after(recv_entry->timetosend, jiffies)) {
+ if (nexttimeout > recv_entry->timetosend ||
+ !settimer) {
nexttimeout = recv_entry->timetosend;
settimer = 1;
}
- continue;
- }
- list_del(&recv_entry->list);
- cm_id = cm_node->cm_id;
- spin_unlock_irqrestore(&cm_node->recv_list_lock, flags);
- if (recv_entry->type == NES_TIMER_TYPE_CLOSE) {
- 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));
- nes_rem_ref(&nesqp->ibqp);
- }
- 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);
- node_done = 0;
- list_for_each_safe(list_core, list_node_temp, &cm_node->retrans_list) {
- if (node_done) {
+ do {
+ send_entry = cm_node->send_entry;
+ if (!send_entry)
break;
- }
- send_entry = container_of(list_core, struct nes_timer_entry, list);
if (time_after(send_entry->timetosend, jiffies)) {
if (cm_node->state != NES_CM_STATE_TSA) {
- if ((nexttimeout > send_entry->timetosend) || !settimer) {
- nexttimeout = send_entry->timetosend;
+ if ((nexttimeout >
+ send_entry->timetosend) ||
+ !settimer) {
+ nexttimeout =
+ send_entry->timetosend;
settimer = 1;
}
- node_done = 1;
- continue;
} else {
- list_del(&send_entry->list);
- skb = send_entry->skb;
- spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
- dev_kfree_skb_any(skb);
- kfree(send_entry);
- spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
- continue;
+ free_retrans_entry(cm_node);
}
+ break;
}
- if (send_entry->type == NES_TIMER_NODE_CLEANUP) {
- list_del(&send_entry->list);
- spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
- kfree(send_entry);
- spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
- continue;
- }
- if ((send_entry->seq_num < cm_node->tcp_cntxt.rem_ack_num) ||
- (cm_node->state == NES_CM_STATE_TSA) ||
- (cm_node->state == NES_CM_STATE_CLOSED)) {
- skb = send_entry->skb;
- list_del(&send_entry->list);
- spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
- kfree(send_entry);
- dev_kfree_skb_any(skb);
- spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
- continue;
+
+ if ((cm_node->state == NES_CM_STATE_TSA) ||
+ (cm_node->state == NES_CM_STATE_CLOSED)) {
+ free_retrans_entry(cm_node);
+ break;
}
- if (!send_entry->retranscount || !send_entry->retrycount) {
+ if (!send_entry->retranscount ||
+ !send_entry->retrycount) {
cm_packets_dropped++;
- skb = send_entry->skb;
- list_del(&send_entry->list);
- spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
- dev_kfree_skb_any(skb);
- kfree(send_entry);
- if (cm_node->state == NES_CM_STATE_SYN_RCVD) {
- /* this node never even generated an indication up to the cm */
- rem_ref_cm_node(cm_core, cm_node);
- } else {
- cm_node->state = NES_CM_STATE_CLOSED;
- create_event(cm_node, NES_CM_EVENT_ABORTED);
- }
- spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
- continue;
+ free_retrans_entry(cm_node);
+
+ spin_unlock_irqrestore(
+ &cm_node->retrans_list_lock, flags);
+ nes_retrans_expired(cm_node);
+ cm_node->state = NES_CM_STATE_CLOSED;
+ spin_lock_irqsave(&cm_node->retrans_list_lock,
+ flags);
+ break;
}
- /* this seems like the correct place, but leave send entry unprotected */
- // spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
atomic_inc(&send_entry->skb->users);
cm_packets_retrans++;
- nes_debug(NES_DBG_CM, "Retransmitting send_entry %p for node %p,"
- " jiffies = %lu, time to send = %lu, retranscount = %u, "
- "send_entry->seq_num = 0x%08X, cm_node->tcp_cntxt.rem_ack_num = 0x%08X\n",
- send_entry, cm_node, jiffies, send_entry->timetosend, send_entry->retranscount,
- send_entry->seq_num, cm_node->tcp_cntxt.rem_ack_num);
-
- spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
+ nes_debug(NES_DBG_CM, "Retransmitting send_entry %p "
+ "for node %p, jiffies = %lu, time to send = "
+ "%lu, retranscount = %u, send_entry->seq_num = "
+ "0x%08X, cm_node->tcp_cntxt.rem_ack_num = "
+ "0x%08X\n", send_entry, cm_node, jiffies,
+ send_entry->timetosend,
+ send_entry->retranscount,
+ send_entry->seq_num,
+ cm_node->tcp_cntxt.rem_ack_num);
+
+ spin_unlock_irqrestore(&cm_node->retrans_list_lock,
+ flags);
ret = nes_nic_cm_xmit(send_entry->skb, cm_node->netdev);
+ spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
if (ret != NETDEV_TX_OK) {
+ nes_debug(NES_DBG_CM, "rexmit failed for "
+ "node=%p\n", cm_node);
cm_packets_bounced++;
- atomic_dec(&send_entry->skb->users);
send_entry->retrycount--;
nexttimeout = jiffies + NES_SHORT_TIME;
settimer = 1;
- node_done = 1;
- spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
- continue;
+ break;
} else {
cm_packets_sent++;
}
- spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
- list_del(&send_entry->list);
- nes_debug(NES_DBG_CM, "Packet Sent: retrans count = %u, retry count = %u.\n",
- send_entry->retranscount, send_entry->retrycount);
+ nes_debug(NES_DBG_CM, "Packet Sent: retrans count = "
+ "%u, retry count = %u.\n",
+ send_entry->retranscount,
+ send_entry->retrycount);
if (send_entry->send_retrans) {
send_entry->retranscount--;
- send_entry->timetosend = jiffies + NES_RETRY_TIMEOUT;
- if (nexttimeout > send_entry->timetosend || !settimer) {
+ timetosend = (NES_RETRY_TIMEOUT <<
+ (NES_DEFAULT_RETRANS - send_entry->retranscount));
+
+ send_entry->timetosend = jiffies +
+ min(timetosend, NES_MAX_TIMEOUT);
+ if (nexttimeout > send_entry->timetosend ||
+ !settimer) {
nexttimeout = send_entry->timetosend;
settimer = 1;
}
- list_add(&send_entry->list, &cm_node->retrans_list);
- continue;
} else {
int close_when_complete;
- skb = send_entry->skb;
- close_when_complete = send_entry->close_when_complete;
- spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
- if (close_when_complete) {
- BUG_ON(atomic_read(&cm_node->ref_count) == 1);
- rem_ref_cm_node(cm_core, cm_node);
- }
- dev_kfree_skb_any(skb);
- kfree(send_entry);
- spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
- continue;
+ close_when_complete =
+ send_entry->close_when_complete;
+ nes_debug(NES_DBG_CM, "cm_node=%p state=%d\n",
+ cm_node, cm_node->state);
+ free_retrans_entry(cm_node);
+ if (close_when_complete)
+ rem_ref_cm_node(cm_node->cm_core,
+ cm_node);
}
- }
- spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
-
- rem_ref_cm_node(cm_core, cm_node);
+ } while (0);
- spin_lock_irqsave(&cm_core->ht_lock, flags);
- if (ret != NETDEV_TX_OK)
- break;
+ spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
+ rem_ref_cm_node(cm_node->cm_core, cm_node);
}
- spin_unlock_irqrestore(&cm_core->ht_lock, flags);
if (settimer) {
if (!timer_pending(&cm_core->tcp_timer)) {
/**
* send_syn
*/
-int send_syn(struct nes_cm_node *cm_node, u32 sendack)
+static int send_syn(struct nes_cm_node *cm_node, u32 sendack,
+ struct sk_buff *skb)
{
int ret;
int flags = SET_SYN;
- struct sk_buff *skb;
char optionsbuffer[sizeof(struct option_mss) +
- sizeof(struct option_windowscale) +
- sizeof(struct option_base) + 1];
+ sizeof(struct option_windowscale) + sizeof(struct option_base) +
+ TCP_OPTIONS_PADDING];
int optionssize = 0;
/* Sending MSS option */
options->as_windowscale.shiftcount = cm_node->tcp_cntxt.rcv_wscale;
optionssize += sizeof(struct option_windowscale);
- if (sendack && !(NES_DRV_OPT_SUPRESS_OPTION_BC & nes_drv_opt)
- ) {
+ if (sendack && !(NES_DRV_OPT_SUPRESS_OPTION_BC & nes_drv_opt)) {
options = (union all_known_options *)&optionsbuffer[optionssize];
options->as_base.optionnum = OPTION_NUMBER_WRITE0;
options->as_base.length = sizeof(struct option_base);
options->as_end = OPTION_NUMBER_END;
optionssize += 1;
- skb = get_free_pkt(cm_node);
+ if (!skb)
+ skb = dev_alloc_skb(MAX_CM_BUFFER);
if (!skb) {
nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n");
return -1;
/**
* send_reset
*/
-int send_reset(struct nes_cm_node *cm_node)
+static int send_reset(struct nes_cm_node *cm_node, struct sk_buff *skb)
{
int ret;
- struct sk_buff *skb = get_free_pkt(cm_node);
int flags = SET_RST | SET_ACK;
+ if (!skb)
+ skb = dev_alloc_skb(MAX_CM_BUFFER);
if (!skb) {
nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n");
- return -1;
+ return -ENOMEM;
}
- add_ref_cm_node(cm_node);
form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, flags);
ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 1);
/**
* send_ack
*/
-int send_ack(struct nes_cm_node *cm_node)
+static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb)
{
int ret;
- struct sk_buff *skb = get_free_pkt(cm_node);
+
+ if (!skb)
+ skb = dev_alloc_skb(MAX_CM_BUFFER);
if (!skb) {
nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n");
/**
* send_fin
*/
-int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb)
+static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb)
{
int ret;
/* if we didn't get a frame get one */
if (!skb)
- skb = get_free_pkt(cm_node);
+ skb = dev_alloc_skb(MAX_CM_BUFFER);
if (!skb) {
nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n");
/**
- * get_free_pkt
- */
-struct sk_buff *get_free_pkt(struct nes_cm_node *cm_node)
-{
- struct sk_buff *skb, *new_skb;
-
- /* check to see if we need to repopulate the free tx pkt queue */
- if (skb_queue_len(&cm_node->cm_core->tx_free_list) < NES_CM_FREE_PKT_LO_WATERMARK) {
- while (skb_queue_len(&cm_node->cm_core->tx_free_list) <
- cm_node->cm_core->free_tx_pkt_max) {
- /* replace the frame we took, we won't get it back */
- new_skb = dev_alloc_skb(cm_node->cm_core->mtu);
- BUG_ON(!new_skb);
- /* add a replacement frame to the free tx list head */
- skb_queue_head(&cm_node->cm_core->tx_free_list, new_skb);
- }
- }
-
- skb = skb_dequeue(&cm_node->cm_core->tx_free_list);
-
- return skb;
-}
-
-
-/**
- * make_hashkey - generate hash key from node tuple
- */
-static inline int make_hashkey(u16 loc_port, nes_addr_t loc_addr, u16 rem_port,
- nes_addr_t rem_addr)
-{
- u32 hashkey = 0;
-
- hashkey = loc_addr + rem_addr + loc_port + rem_port;
- hashkey = (hashkey % NES_CM_HASHTABLE_SIZE);
-
- return hashkey;
-}
-
-
-/**
* find_node - find a cm node that matches the reference cm node
*/
static struct nes_cm_node *find_node(struct nes_cm_core *cm_core,
u16 rem_port, nes_addr_t rem_addr, u16 loc_port, nes_addr_t loc_addr)
{
unsigned long flags;
- u32 hashkey;
- struct list_head *list_pos;
struct list_head *hte;
struct nes_cm_node *cm_node;
- /* make a hash index key for this packet */
- hashkey = make_hashkey(loc_port, loc_addr, rem_port, rem_addr);
-
/* get a handle on the hte */
hte = &cm_core->connected_nodes;
- nes_debug(NES_DBG_CM, "Searching for an owner node:%x:%x from core %p->%p\n",
- loc_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(list_pos, hte) {
- cm_node = container_of(list_pos, struct nes_cm_node, list);
+ list_for_each_entry(cm_node, hte, list) {
/* compare quad, return node handle if a match */
nes_debug(NES_DBG_CM, "finding node %x:%x =? %x:%x ^ %x:%x =? %x:%x\n",
cm_node->loc_addr, cm_node->loc_port,
nes_addr_t dst_addr, u16 dst_port, enum nes_cm_listener_state listener_state)
{
unsigned long flags;
- struct list_head *listen_list;
struct nes_cm_listener *listen_node;
/* walk list and find cm_node associated with this session ID */
spin_lock_irqsave(&cm_core->listen_list_lock, flags);
- list_for_each(listen_list, &cm_core->listen_list.list) {
- listen_node = container_of(listen_list, struct nes_cm_listener, list);
+ list_for_each_entry(listen_node, &cm_core->listen_list.list, list) {
/* compare node pair, return node handle if a match */
if (((listen_node->loc_addr == dst_addr) ||
listen_node->loc_addr == 0x00000000) &&
}
spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
- nes_debug(NES_DBG_CM, "Unable to find listener- %x:%x\n",
- dst_addr, dst_port);
-
/* no listener */
return NULL;
}
static int add_hte_node(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node)
{
unsigned long flags;
- u32 hashkey;
struct list_head *hte;
if (!cm_node || !cm_core)
return -EINVAL;
- nes_debug(NES_DBG_CM, "Adding Node to Active Connection HT\n");
-
- /* first, make an index into our hash table */
- hashkey = make_hashkey(cm_node->loc_port, cm_node->loc_addr,
- cm_node->rem_port, cm_node->rem_addr);
- cm_node->hashkey = hashkey;
+ nes_debug(NES_DBG_CM, "Adding Node %p to Active Connection HT\n",
+ cm_node);
spin_lock_irqsave(&cm_core->ht_lock, flags);
* mini_cm_dec_refcnt_listen
*/
static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core,
- struct nes_cm_listener *listener, int free_hanging_nodes)
+ 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;
+ struct nes_cm_node *cm_node = NULL;
+ struct list_head reset_list;
+
+ nes_debug(NES_DBG_CM, "attempting listener= %p free_nodes= %d, "
+ "refcnt=%d\n", listener, free_hanging_nodes,
+ atomic_read(&listener->ref_count));
+ /* free non-accelerated child nodes for this listener */
+ INIT_LIST_HEAD(&reset_list);
+ if (free_hanging_nodes) {
+ spin_lock_irqsave(&cm_core->ht_lock, flags);
+ list_for_each_safe(list_pos, list_temp,
+ &g_cm_core->connected_nodes) {
+ cm_node = container_of(list_pos, struct nes_cm_node,
+ list);
+ if ((cm_node->listener == listener) &&
+ (!cm_node->accelerated)) {
+ add_ref_cm_node(cm_node);
+ list_add(&cm_node->reset_entry, &reset_list);
+ }
+ }
+ spin_unlock_irqrestore(&cm_core->ht_lock, flags);
+ }
+
+ list_for_each_safe(list_pos, list_temp, &reset_list) {
+ cm_node = container_of(list_pos, struct nes_cm_node,
+ reset_entry);
+ {
+ struct nes_cm_node *loopback = cm_node->loopbackpartner;
+ enum nes_cm_node_state old_state;
+ if (NES_CM_STATE_FIN_WAIT1 <= cm_node->state) {
+ rem_ref_cm_node(cm_node->cm_core, cm_node);
+ } else {
+ if (!loopback) {
+ cleanup_retrans_entry(cm_node);
+ err = send_reset(cm_node, NULL);
+ if (err) {
+ cm_node->state =
+ NES_CM_STATE_CLOSED;
+ WARN_ON(1);
+ } else {
+ old_state = cm_node->state;
+ cm_node->state = NES_CM_STATE_LISTENER_DESTROYED;
+ if (old_state != NES_CM_STATE_MPAREQ_RCVD)
+ rem_ref_cm_node(
+ cm_node->cm_core,
+ cm_node);
+ }
+ } else {
+ struct nes_cm_event event;
+
+ event.cm_node = loopback;
+ event.cm_info.rem_addr =
+ loopback->rem_addr;
+ event.cm_info.loc_addr =
+ loopback->loc_addr;
+ event.cm_info.rem_port =
+ loopback->rem_port;
+ event.cm_info.loc_port =
+ loopback->loc_port;
+ event.cm_info.cm_id = loopback->cm_id;
+ 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 (!atomic_dec_return(&listener->ref_count)) {
list_del(&listener->list);
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);
}
/**
- * nes_addr_send_arp
+ * nes_addr_resolve_neigh
*/
-static void nes_addr_send_arp(u32 dst_ip)
+static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip)
{
struct rtable *rt;
struct flowi fl;
+ struct neighbour *neigh;
+ int rc = -1;
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",
- __FUNCTION__, dst_ip);
- return;
+ printk(KERN_ERR "%s: ip_route_output_key failed for 0x%08X\n",
+ __func__, dst_ip);
+ return rc;
+ }
+
+ neigh = neigh_lookup(&arp_tbl, &rt->rt_gateway, nesvnic->netdev);
+ if (neigh) {
+ if (neigh->nud_state & NUD_VALID) {
+ nes_debug(NES_DBG_CM, "Neighbor MAC address for 0x%08X"
+ " is %pM, Gateway is 0x%08X \n", dst_ip,
+ neigh->ha, ntohl(rt->rt_gateway));
+ nes_manage_arp_cache(nesvnic->netdev, neigh->ha,
+ dst_ip, NES_ARP_ADD);
+ rc = nes_arp_table(nesvnic->nesdev, dst_ip, NULL,
+ NES_ARP_RESOLVE);
+ }
+ neigh_release(neigh);
}
- neigh_event_send(rt->u.dst.neighbour, NULL);
+ if ((neigh == NULL) || (!(neigh->nud_state & NUD_VALID)))
+ neigh_event_send(rt->u.dst.neighbour, NULL);
+
ip_rt_put(rt);
+ return rc;
}
cm_node->loc_port = cm_info->loc_port;
cm_node->rem_port = cm_info->rem_port;
cm_node->send_write0 = send_first;
- nes_debug(NES_DBG_CM, "Make node addresses : loc = %x:%x, rem = %x:%x\n",
- cm_node->loc_addr, cm_node->loc_port, cm_node->rem_addr, cm_node->rem_port);
+ nes_debug(NES_DBG_CM, "Make node addresses : loc = %pI4:%x, rem = %pI4:%x\n",
+ &cm_node->loc_addr, cm_node->loc_port,
+ &cm_node->rem_addr, cm_node->rem_port);
cm_node->listener = listener;
cm_node->netdev = nesvnic->netdev;
cm_node->cm_id = cm_info->cm_id;
memcpy(cm_node->loc_mac, nesvnic->netdev->dev_addr, ETH_ALEN);
- nes_debug(NES_DBG_CM, "listener=%p, cm_id=%p\n",
- cm_node->listener, cm_node->cm_id);
+ nes_debug(NES_DBG_CM, "listener=%p, cm_id=%p\n", cm_node->listener,
+ cm_node->cm_id);
- INIT_LIST_HEAD(&cm_node->retrans_list);
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);
cm_node->tcp_cntxt.rcv_nxt = 0;
/* get a unique session ID , add thread_id to an upcounter to handle race */
atomic_inc(&cm_core->node_cnt);
- atomic_inc(&cm_core->session_id);
- cm_node->session_id = (u32)(atomic_read(&cm_core->session_id) + current->tgid);
cm_node->conn_type = cm_info->conn_type;
cm_node->apbvt_set = 0;
cm_node->accept_pend = 0;
cm_node->loopbackpartner = NULL;
/* get the mac addr for the remote node */
- arpindex = nes_arp_table(nesdev, cm_node->rem_addr, NULL, NES_ARP_RESOLVE);
+ if (ipv4_is_loopback(htonl(cm_node->rem_addr)))
+ arpindex = nes_arp_table(nesdev, ntohl(nesvnic->local_ipaddr), NULL, NES_ARP_RESOLVE);
+ else
+ arpindex = nes_arp_table(nesdev, cm_node->rem_addr, NULL, NES_ARP_RESOLVE);
if (arpindex < 0) {
- kfree(cm_node);
- nes_addr_send_arp(cm_info->rem_addr);
- return NULL;
+ arpindex = nes_addr_resolve_neigh(nesvnic, cm_info->rem_addr);
+ if (arpindex < 0) {
+ kfree(cm_node);
+ return NULL;
+ }
}
/* copy the mac addr to node context */
memcpy(cm_node->rem_mac, nesadapter->arp_table[arpindex].mac_addr, ETH_ALEN);
- nes_debug(NES_DBG_CM, "Remote mac addr from arp table:%02x,"
- " %02x, %02x, %02x, %02x, %02x\n",
- cm_node->rem_mac[0], cm_node->rem_mac[1],
- cm_node->rem_mac[2], cm_node->rem_mac[3],
- cm_node->rem_mac[4], cm_node->rem_mac[5]);
+ nes_debug(NES_DBG_CM, "Remote mac addr from arp table: %pM\n",
+ cm_node->rem_mac);
add_hte_node(cm_core, cm_node);
atomic_inc(&cm_nodes_created);
* rem_ref_cm_node - destroy an instance of a cm node
*/
static int rem_ref_cm_node(struct nes_cm_core *cm_core,
- struct nes_cm_node *cm_node)
+ struct nes_cm_node *cm_node)
{
- unsigned long flags, qplockflags;
- struct nes_timer_entry *send_entry;
- 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);
}
-
- spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
- list_for_each_safe(list_core, list_node_temp, &cm_node->retrans_list) {
- send_entry = container_of(list_core, struct nes_timer_entry, list);
- list_del(&send_entry->list);
- spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
- dev_kfree_skb_any(send_entry->skb);
- kfree(send_entry);
- spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
- continue;
- }
- spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
-
- 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);
- if (recv_entry->type == NES_TIMER_TYPE_CLOSE) {
- 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);
- nes_rem_ref(&nesqp->ibqp);
- }
- cm_id->rem_ref(cm_id);
- } else if (recv_entry->type == NES_TIMER_TYPE_RECV) {
- dev_kfree_skb_any(recv_entry->skb);
- }
- 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 {
if (cm_node->apbvt_set && cm_node->nesvnic) {
nes_manage_apbvt(cm_node->nesvnic, cm_node->loc_port,
- PCI_FUNC(cm_node->nesvnic->nesdev->pcidev->devfn),
- NES_MANAGE_APBVT_DEL);
+ PCI_FUNC(
+ cm_node->nesvnic->nesdev->pcidev->devfn),
+ NES_MANAGE_APBVT_DEL);
}
}
- kfree(cm_node);
atomic_dec(&cm_core->node_cnt);
atomic_inc(&cm_nodes_destroyed);
+ nesqp = cm_node->nesqp;
+ if (nesqp) {
+ nesqp->cm_node = NULL;
+ nes_rem_ref(&nesqp->ibqp);
+ cm_node->nesqp = NULL;
+ }
+ kfree(cm_node);
return 0;
}
-
/**
* process_options
*/
-static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc, u32 optionsize, u32 syn_packet)
+static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc,
+ u32 optionsize, u32 syn_packet)
{
u32 tmp;
u32 offset = 0;
while (offset < optionsize) {
all_options = (union all_known_options *)(optionsloc + offset);
switch (all_options->as_base.optionnum) {
- case OPTION_NUMBER_END:
- offset = optionsize;
- break;
- case OPTION_NUMBER_NONE:
- offset += 1;
- continue;
- case OPTION_NUMBER_MSS:
- nes_debug(NES_DBG_CM, "%s: MSS Length: %d Offset: %d Size: %d\n",
- __FUNCTION__,
- all_options->as_mss.length, offset, optionsize);
- got_mss_option = 1;
- if (all_options->as_mss.length != 4) {
- return 1;
- } else {
- tmp = ntohs(all_options->as_mss.mss);
- if (tmp > 0 && tmp < cm_node->tcp_cntxt.mss)
- cm_node->tcp_cntxt.mss = tmp;
- }
- break;
- case OPTION_NUMBER_WINDOW_SCALE:
- cm_node->tcp_cntxt.snd_wscale = all_options->as_windowscale.shiftcount;
- break;
- case OPTION_NUMBER_WRITE0:
- cm_node->send_write0 = 1;
- break;
- default:
- nes_debug(NES_DBG_CM, "TCP Option not understood: %x\n",
- all_options->as_base.optionnum);
- break;
+ case OPTION_NUMBER_END:
+ offset = optionsize;
+ break;
+ case OPTION_NUMBER_NONE:
+ offset += 1;
+ continue;
+ case OPTION_NUMBER_MSS:
+ nes_debug(NES_DBG_CM, "%s: MSS Length: %d Offset: %d "
+ "Size: %d\n", __func__,
+ all_options->as_mss.length, offset, optionsize);
+ got_mss_option = 1;
+ if (all_options->as_mss.length != 4) {
+ return 1;
+ } else {
+ tmp = ntohs(all_options->as_mss.mss);
+ if (tmp > 0 && tmp <
+ cm_node->tcp_cntxt.mss)
+ cm_node->tcp_cntxt.mss = tmp;
+ }
+ break;
+ case OPTION_NUMBER_WINDOW_SCALE:
+ cm_node->tcp_cntxt.snd_wscale =
+ all_options->as_windowscale.shiftcount;
+ break;
+ case OPTION_NUMBER_WRITE0:
+ cm_node->send_write0 = 1;
+ break;
+ default:
+ nes_debug(NES_DBG_CM, "TCP Option not understood: %x\n",
+ all_options->as_base.optionnum);
+ break;
}
offset += all_options->as_base.length;
}
return 0;
}
+static void drop_packet(struct sk_buff *skb)
+{
+ atomic_inc(&cm_accel_dropped_pkts);
+ dev_kfree_skb_any(skb);
+}
-/**
- * process_packet
- */
-int process_packet(struct nes_cm_node *cm_node, struct sk_buff *skb,
- struct nes_cm_core *cm_core)
+static void handle_fin_pkt(struct nes_cm_node *cm_node)
{
- int optionsize;
- int datasize;
- int ret = 0;
- struct tcphdr *tcph = tcp_hdr(skb);
- u32 inc_sequence;
- if (cm_node->state == NES_CM_STATE_SYN_SENT && tcph->syn) {
- inc_sequence = ntohl(tcph->seq);
- cm_node->tcp_cntxt.rcv_nxt = inc_sequence;
+ nes_debug(NES_DBG_CM, "Received FIN, cm_node = %p, state = %u. "
+ "refcnt=%d\n", cm_node, cm_node->state,
+ atomic_read(&cm_node->ref_count));
+ switch (cm_node->state) {
+ case NES_CM_STATE_SYN_RCVD:
+ case NES_CM_STATE_SYN_SENT:
+ case NES_CM_STATE_ESTABLISHED:
+ case NES_CM_STATE_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, NULL);
+ break;
+ case NES_CM_STATE_FIN_WAIT1:
+ cm_node->tcp_cntxt.rcv_nxt++;
+ cleanup_retrans_entry(cm_node);
+ cm_node->state = NES_CM_STATE_CLOSING;
+ send_ack(cm_node, NULL);
+ /* Wait for ACK as this is 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, NULL);
+ schedule_nes_timer(cm_node, NULL, NES_TIMER_TYPE_CLOSE, 1, 0);
+ break;
+ case NES_CM_STATE_TIME_WAIT:
+ cm_node->tcp_cntxt.rcv_nxt++;
+ cleanup_retrans_entry(cm_node);
+ cm_node->state = NES_CM_STATE_CLOSED;
+ rem_ref_cm_node(cm_node->cm_core, cm_node);
+ break;
+ case NES_CM_STATE_TSA:
+ default:
+ nes_debug(NES_DBG_CM, "Error Rcvd FIN for node-%p state = %d\n",
+ cm_node, cm_node->state);
+ break;
}
+}
- if ((!tcph) || (cm_node->state == NES_CM_STATE_TSA)) {
- BUG_ON(!tcph);
- atomic_inc(&cm_accel_dropped_pkts);
- return -1;
+
+static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
+ struct tcphdr *tcph)
+{
+
+ int reset = 0; /* whether to send reset in case of err.. */
+ int passive_state;
+ atomic_inc(&cm_resets_recvd);
+ nes_debug(NES_DBG_CM, "Received Reset, cm_node = %p, state = %u."
+ " refcnt=%d\n", cm_node, cm_node->state,
+ atomic_read(&cm_node->ref_count));
+ cleanup_retrans_entry(cm_node);
+ switch (cm_node->state) {
+ case NES_CM_STATE_SYN_SENT:
+ case NES_CM_STATE_MPAREQ_SENT:
+ nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p "
+ "listener=%p state=%d\n", __func__, __LINE__, cm_node,
+ cm_node->listener, cm_node->state);
+ active_open_err(cm_node, skb, reset);
+ break;
+ case NES_CM_STATE_MPAREQ_RCVD:
+ 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);
+ cm_node->state = NES_CM_STATE_CLOSED;
+ dev_kfree_skb_any(skb);
+ break;
+ case NES_CM_STATE_ESTABLISHED:
+ case NES_CM_STATE_SYN_RCVD:
+ case NES_CM_STATE_LISTENING:
+ nes_debug(NES_DBG_CM, "Bad state %s[%u]\n", __func__, __LINE__);
+ passive_open_err(cm_node, skb, reset);
+ break;
+ case NES_CM_STATE_TSA:
+ active_open_err(cm_node, skb, reset);
+ break;
+ case NES_CM_STATE_CLOSED:
+ drop_packet(skb);
+ break;
+ case NES_CM_STATE_FIN_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:
+ drop_packet(skb);
+ break;
}
+}
- if (tcph->rst) {
- atomic_inc(&cm_resets_recvd);
- nes_debug(NES_DBG_CM, "Received Reset, cm_node = %p, state = %u. refcnt=%d\n",
- cm_node, cm_node->state, atomic_read(&cm_node->ref_count));
- switch (cm_node->state) {
- case NES_CM_STATE_LISTENING:
- rem_ref_cm_node(cm_core, cm_node);
- break;
- case NES_CM_STATE_TSA:
- case NES_CM_STATE_CLOSED:
- break;
- case NES_CM_STATE_SYN_RCVD:
- nes_debug(NES_DBG_CM, "Received a reset for local 0x%08X:%04X,"
- " remote 0x%08X:%04X, node state = %u\n",
- cm_node->loc_addr, cm_node->loc_port,
- cm_node->rem_addr, cm_node->rem_port,
- cm_node->state);
- rem_ref_cm_node(cm_core, cm_node);
- break;
- case NES_CM_STATE_ONE_SIDE_ESTABLISHED:
- case NES_CM_STATE_ESTABLISHED:
- case NES_CM_STATE_MPAREQ_SENT:
- default:
- nes_debug(NES_DBG_CM, "Received a reset for local 0x%08X:%04X,"
- " remote 0x%08X:%04X, node state = %u refcnt=%d\n",
- cm_node->loc_addr, cm_node->loc_port,
- cm_node->rem_addr, cm_node->rem_port,
- cm_node->state, atomic_read(&cm_node->ref_count));
- // create event
- cm_node->state = NES_CM_STATE_CLOSED;
- create_event(cm_node, NES_CM_EVENT_ABORTED);
- break;
+static void handle_rcv_mpa(struct nes_cm_node *cm_node, struct sk_buff *skb)
+{
+ int ret = 0;
+ int datasize = skb->len;
+ u8 *dataloc = skb->data;
+
+ enum nes_cm_event_type type = NES_CM_EVENT_UNKNOWN;
+ u32 res_type;
+ ret = parse_mpa(cm_node, dataloc, &res_type, datasize);
+ if (ret) {
+ nes_debug(NES_DBG_CM, "didn't like MPA Request\n");
+ if (cm_node->state == NES_CM_STATE_MPAREQ_SENT) {
+ nes_debug(NES_DBG_CM, "%s[%u] create abort for "
+ "cm_node=%p listener=%p state=%d\n", __func__,
+ __LINE__, cm_node, cm_node->listener,
+ cm_node->state);
+ active_open_err(cm_node, skb, 1);
+ } else {
+ passive_open_err(cm_node, skb, 1);
}
- return -1;
+ return;
}
+ switch (cm_node->state) {
+ case NES_CM_STATE_ESTABLISHED:
+ if (res_type == NES_MPA_REQUEST_REJECT) {
+ /*BIG problem as we are receiving the MPA.. So should
+ * not be REJECT.. This is Passive Open.. We can
+ * only receive it Reject for Active Open...*/
+ WARN_ON(1);
+ }
+ cm_node->state = NES_CM_STATE_MPAREQ_RCVD;
+ type = NES_CM_EVENT_MPA_REQ;
+ atomic_set(&cm_node->passive_state,
+ NES_PASSIVE_STATE_INDICATED);
+ break;
+ case NES_CM_STATE_MPAREQ_SENT:
+ cleanup_retrans_entry(cm_node);
+ if (res_type == NES_MPA_REQUEST_REJECT) {
+ type = NES_CM_EVENT_MPA_REJECT;
+ cm_node->state = NES_CM_STATE_MPAREJ_RCVD;
+ } else {
+ type = NES_CM_EVENT_CONNECTED;
+ cm_node->state = NES_CM_STATE_TSA;
+ }
+
+ break;
+ default:
+ WARN_ON(1);
+ break;
+ }
+ dev_kfree_skb_any(skb);
+ create_event(cm_node, type);
+}
+
+static void indicate_pkt_err(struct nes_cm_node *cm_node, struct sk_buff *skb)
+{
+ switch (cm_node->state) {
+ case NES_CM_STATE_SYN_SENT:
+ case NES_CM_STATE_MPAREQ_SENT:
+ nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p "
+ "listener=%p state=%d\n", __func__, __LINE__, cm_node,
+ cm_node->listener, cm_node->state);
+ active_open_err(cm_node, skb, 1);
+ break;
+ case NES_CM_STATE_ESTABLISHED:
+ case NES_CM_STATE_SYN_RCVD:
+ passive_open_err(cm_node, skb, 1);
+ break;
+ case NES_CM_STATE_TSA:
+ default:
+ drop_packet(skb);
+ }
+}
+
+static int check_syn(struct nes_cm_node *cm_node, struct tcphdr *tcph,
+ struct sk_buff *skb)
+{
+ int err;
+
+ err = ((ntohl(tcph->ack_seq) == cm_node->tcp_cntxt.loc_seq_num))? 0 : 1;
+ if (err)
+ active_open_err(cm_node, skb, 1);
+
+ return err;
+}
+
+static int check_seq(struct nes_cm_node *cm_node, struct tcphdr *tcph,
+ struct sk_buff *skb)
+{
+ int err = 0;
+ u32 seq;
+ u32 ack_seq;
+ u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num;
+ u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt;
+ u32 rcv_wnd;
+ seq = ntohl(tcph->seq);
+ ack_seq = ntohl(tcph->ack_seq);
+ rcv_wnd = cm_node->tcp_cntxt.rcv_wnd;
+ if (ack_seq != loc_seq_num)
+ err = 1;
+ else if (!between(seq, rcv_nxt, (rcv_nxt+rcv_wnd)))
+ err = 1;
+ if (err) {
+ nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p "
+ "listener=%p state=%d\n", __func__, __LINE__, cm_node,
+ cm_node->listener, cm_node->state);
+ indicate_pkt_err(cm_node, skb);
+ nes_debug(NES_DBG_CM, "seq ERROR cm_node =%p seq=0x%08X "
+ "rcv_nxt=0x%08X rcv_wnd=0x%x\n", cm_node, seq, rcv_nxt,
+ rcv_wnd);
+ }
+ return err;
+}
+
+/*
+ * handle_syn_pkt() is for Passive node. The syn packet is received when a node
+ * is created with a listener or it may comein as rexmitted packet which in
+ * that case will be just dropped.
+ */
+
+static void handle_syn_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
+ struct tcphdr *tcph)
+{
+ int ret;
+ u32 inc_sequence;
+ int optionsize;
+
optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
+ skb_trim(skb, 0);
+ inc_sequence = ntohl(tcph->seq);
- skb_pull(skb, ip_hdr(skb)->ihl << 2);
- skb_pull(skb, tcph->doff << 2);
+ switch (cm_node->state) {
+ case NES_CM_STATE_SYN_SENT:
+ case NES_CM_STATE_MPAREQ_SENT:
+ /* Rcvd syn on active open connection*/
+ active_open_err(cm_node, skb, 1);
+ break;
+ case NES_CM_STATE_LISTENING:
+ /* Passive OPEN */
+ if (atomic_read(&cm_node->listener->pend_accepts_cnt) >
+ cm_node->listener->backlog) {
+ nes_debug(NES_DBG_CM, "drop syn due to backlog "
+ "pressure \n");
+ cm_backlog_drops++;
+ passive_open_err(cm_node, skb, 0);
+ break;
+ }
+ ret = handle_tcp_options(cm_node, tcph, skb, optionsize,
+ 1);
+ if (ret) {
+ passive_open_err(cm_node, skb, 0);
+ /* drop pkt */
+ break;
+ }
+ cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
+ BUG_ON(cm_node->send_entry);
+ cm_node->accept_pend = 1;
+ atomic_inc(&cm_node->listener->pend_accepts_cnt);
+
+ cm_node->state = NES_CM_STATE_SYN_RCVD;
+ send_syn(cm_node, 1, skb);
+ break;
+ case NES_CM_STATE_CLOSED:
+ cleanup_retrans_entry(cm_node);
+ send_reset(cm_node, skb);
+ break;
+ case NES_CM_STATE_TSA:
+ case NES_CM_STATE_ESTABLISHED:
+ case NES_CM_STATE_FIN_WAIT1:
+ case NES_CM_STATE_FIN_WAIT2:
+ case NES_CM_STATE_MPAREQ_RCVD:
+ case NES_CM_STATE_LAST_ACK:
+ case NES_CM_STATE_CLOSING:
+ case NES_CM_STATE_UNKNOWN:
+ default:
+ drop_packet(skb);
+ break;
+ }
+}
- datasize = skb->len;
+static void handle_synack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
+ struct tcphdr *tcph)
+{
+
+ int ret;
+ u32 inc_sequence;
+ int optionsize;
+
+ optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
+ skb_trim(skb, 0);
inc_sequence = ntohl(tcph->seq);
- nes_debug(NES_DBG_CM, "datasize = %u, sequence = 0x%08X, ack_seq = 0x%08X,"
- " rcv_nxt = 0x%08X Flags: %s %s.\n",
- datasize, inc_sequence, ntohl(tcph->ack_seq),
- cm_node->tcp_cntxt.rcv_nxt, (tcph->syn ? "SYN":""),
- (tcph->ack ? "ACK":""));
-
- if (!tcph->syn && (inc_sequence != cm_node->tcp_cntxt.rcv_nxt)
- ) {
- nes_debug(NES_DBG_CM, "dropping packet, datasize = %u, sequence = 0x%08X,"
- " ack_seq = 0x%08X, rcv_nxt = 0x%08X Flags: %s.\n",
- datasize, inc_sequence, ntohl(tcph->ack_seq),
- cm_node->tcp_cntxt.rcv_nxt, (tcph->ack ? "ACK":""));
- if (cm_node->state == NES_CM_STATE_LISTENING) {
- rem_ref_cm_node(cm_core, cm_node);
+ switch (cm_node->state) {
+ case NES_CM_STATE_SYN_SENT:
+ cleanup_retrans_entry(cm_node);
+ /* active open */
+ if (check_syn(cm_node, tcph, skb))
+ return;
+ cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
+ /* setup options */
+ ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 0);
+ if (ret) {
+ nes_debug(NES_DBG_CM, "cm_node=%p tcp_options failed\n",
+ cm_node);
+ break;
}
- return -1;
+ cleanup_retrans_entry(cm_node);
+ cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
+ send_mpa_request(cm_node, skb);
+ cm_node->state = NES_CM_STATE_MPAREQ_SENT;
+ break;
+ case NES_CM_STATE_MPAREQ_RCVD:
+ /* passive open, so should not be here */
+ passive_open_err(cm_node, skb, 1);
+ break;
+ case NES_CM_STATE_LISTENING:
+ case NES_CM_STATE_CLOSED:
+ cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
+ cleanup_retrans_entry(cm_node);
+ send_reset(cm_node, skb);
+ break;
+ case NES_CM_STATE_ESTABLISHED:
+ case NES_CM_STATE_FIN_WAIT1:
+ case NES_CM_STATE_FIN_WAIT2:
+ case NES_CM_STATE_LAST_ACK:
+ case NES_CM_STATE_TSA:
+ case NES_CM_STATE_CLOSING:
+ case NES_CM_STATE_UNKNOWN:
+ case NES_CM_STATE_MPAREQ_SENT:
+ default:
+ drop_packet(skb);
+ break;
}
+}
- cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
+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 = 0;
+ int optionsize;
+ optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
+ if (check_seq(cm_node, tcph, skb))
+ return -EINVAL;
+ skb_pull(skb, tcph->doff << 2);
+ inc_sequence = ntohl(tcph->seq);
+ 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->state = NES_CM_STATE_ESTABLISHED;
+ if (datasize) {
+ cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
+ handle_rcv_mpa(cm_node, skb);
+ } else /* rcvd ACK only */
+ dev_kfree_skb_any(skb);
+ break;
+ case NES_CM_STATE_ESTABLISHED:
+ /* Passive OPEN */
+ cleanup_retrans_entry(cm_node);
+ if (datasize) {
+ cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
+ handle_rcv_mpa(cm_node, skb);
+ } else
+ drop_packet(skb);
+ break;
+ case NES_CM_STATE_MPAREQ_SENT:
+ cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
+ if (datasize) {
+ cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
+ handle_rcv_mpa(cm_node, skb);
+ } else /* Could be just an ack pkt.. */
+ dev_kfree_skb_any(skb);
+ break;
+ case NES_CM_STATE_LISTENING:
+ 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_UNKNOWN:
+ default:
+ cleanup_retrans_entry(cm_node);
+ drop_packet(skb);
+ break;
+ }
+ return ret;
+}
+
+
+
+static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph,
+ struct sk_buff *skb, int optionsize, int passive)
+{
+ u8 *optionsloc = (u8 *)&tcph[1];
if (optionsize) {
- u8 *optionsloc = (u8 *)&tcph[1];
- if (process_options(cm_node, optionsloc, optionsize, (u32)tcph->syn)) {
- nes_debug(NES_DBG_CM, "%s: Node %p, Sending RESET\n", __FUNCTION__, cm_node);
- send_reset(cm_node);
- if (cm_node->state != NES_CM_STATE_SYN_SENT)
- rem_ref_cm_node(cm_core, cm_node);
- return 0;
+ if (process_options(cm_node, optionsloc, optionsize,
+ (u32)tcph->syn)) {
+ nes_debug(NES_DBG_CM, "%s: Node %p, Sending RESET\n",
+ __func__, cm_node);
+ if (passive)
+ passive_open_err(cm_node, skb, 1);
+ else
+ active_open_err(cm_node, skb, 1);
+ return 1;
}
- } else if (tcph->syn)
- cm_node->tcp_cntxt.mss = NES_CM_DEFAULT_MSS;
+ }
cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->window) <<
cm_node->tcp_cntxt.snd_wscale;
- if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd) {
+ if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd)
cm_node->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.snd_wnd;
- }
+ return 0;
+}
- if (tcph->ack) {
- cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
- switch (cm_node->state) {
- case NES_CM_STATE_SYN_RCVD:
- case NES_CM_STATE_SYN_SENT:
- /* read and stash current sequence number */
- if (cm_node->tcp_cntxt.rem_ack_num != cm_node->tcp_cntxt.loc_seq_num) {
- nes_debug(NES_DBG_CM, "ERROR - cm_node->tcp_cntxt.rem_ack_num !="
- " cm_node->tcp_cntxt.loc_seq_num\n");
- send_reset(cm_node);
- return 0;
- }
- if (cm_node->state == NES_CM_STATE_SYN_SENT)
- cm_node->state = NES_CM_STATE_ONE_SIDE_ESTABLISHED;
- else {
- cm_node->state = NES_CM_STATE_ESTABLISHED;
- }
- break;
- case NES_CM_STATE_LAST_ACK:
- cm_node->state = NES_CM_STATE_CLOSED;
- break;
- case NES_CM_STATE_FIN_WAIT1:
- cm_node->state = NES_CM_STATE_FIN_WAIT2;
- break;
- case NES_CM_STATE_CLOSING:
- cm_node->state = NES_CM_STATE_TIME_WAIT;
- /* need to schedule this to happen in 2MSL timeouts */
- cm_node->state = NES_CM_STATE_CLOSED;
- break;
- case NES_CM_STATE_ONE_SIDE_ESTABLISHED:
- case NES_CM_STATE_ESTABLISHED:
- case NES_CM_STATE_MPAREQ_SENT:
- case NES_CM_STATE_CLOSE_WAIT:
- case NES_CM_STATE_TIME_WAIT:
- case NES_CM_STATE_CLOSED:
- break;
- case NES_CM_STATE_LISTENING:
- nes_debug(NES_DBG_CM, "Received an ACK on a listening port (SYN %d)\n", tcph->syn);
- cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
- send_reset(cm_node);
- /* send_reset bumps refcount, this should have been a new node */
- rem_ref_cm_node(cm_core, cm_node);
- return -1;
- break;
- case NES_CM_STATE_TSA:
- nes_debug(NES_DBG_CM, "Received a packet with the ack bit set while in TSA state\n");
- break;
- case NES_CM_STATE_UNKNOWN:
- case NES_CM_STATE_INITED:
- case NES_CM_STATE_ACCEPTING:
- case NES_CM_STATE_FIN_WAIT2:
- default:
- nes_debug(NES_DBG_CM, "Received ack from unknown state: %x\n",
- cm_node->state);
- send_reset(cm_node);
- break;
- }
- }
+/*
+ * active_open_err() will send reset() if flag set..
+ * It will also send ABORT event.
+ */
- if (tcph->syn) {
- if (cm_node->state == NES_CM_STATE_LISTENING) {
- /* do not exceed backlog */
- 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 pressure \n");
- cm_backlog_drops++;
- atomic_dec(&cm_node->listener->pend_accepts_cnt);
- rem_ref_cm_node(cm_core, cm_node);
- return 0;
- }
- cm_node->accept_pend = 1;
+static void active_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb,
+ int reset)
+{
+ cleanup_retrans_entry(cm_node);
+ if (reset) {
+ nes_debug(NES_DBG_CM, "ERROR active err called for cm_node=%p, "
+ "state=%d\n", cm_node, cm_node->state);
+ add_ref_cm_node(cm_node);
+ send_reset(cm_node, skb);
+ } else
+ dev_kfree_skb_any(skb);
- }
- if (datasize == 0)
- cm_node->tcp_cntxt.rcv_nxt ++;
+ cm_node->state = NES_CM_STATE_CLOSED;
+ create_event(cm_node, NES_CM_EVENT_ABORTED);
+}
- if (cm_node->state == NES_CM_STATE_LISTENING) {
- cm_node->state = NES_CM_STATE_SYN_RCVD;
- send_syn(cm_node, 1);
- }
- if (cm_node->state == NES_CM_STATE_ONE_SIDE_ESTABLISHED) {
- cm_node->state = NES_CM_STATE_ESTABLISHED;
- /* send final handshake ACK */
- ret = send_ack(cm_node);
- if (ret < 0)
- return ret;
+/*
+ * passive_open_err() will either do a reset() or will free up the skb and
+ * remove the cm_node.
+ */
- cm_node->state = NES_CM_STATE_MPAREQ_SENT;
- ret = send_mpa_request(cm_node);
- if (ret < 0)
- return ret;
- }
+static void passive_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb,
+ int reset)
+{
+ cleanup_retrans_entry(cm_node);
+ cm_node->state = NES_CM_STATE_CLOSED;
+ if (reset) {
+ nes_debug(NES_DBG_CM, "passive_open_err sending RST for "
+ "cm_node=%p state =%d\n", cm_node, cm_node->state);
+ send_reset(cm_node, skb);
+ } else {
+ dev_kfree_skb_any(skb);
+ rem_ref_cm_node(cm_node->cm_core, cm_node);
}
+}
- if (tcph->fin) {
- cm_node->tcp_cntxt.rcv_nxt++;
- switch (cm_node->state) {
- case NES_CM_STATE_SYN_RCVD:
- case NES_CM_STATE_SYN_SENT:
- case NES_CM_STATE_ONE_SIDE_ESTABLISHED:
- case NES_CM_STATE_ESTABLISHED:
- case NES_CM_STATE_ACCEPTING:
- case NES_CM_STATE_MPAREQ_SENT:
- cm_node->state = NES_CM_STATE_CLOSE_WAIT;
- cm_node->state = NES_CM_STATE_LAST_ACK;
- ret = send_fin(cm_node, NULL);
- break;
- case NES_CM_STATE_FIN_WAIT1:
- cm_node->state = NES_CM_STATE_CLOSING;
- ret = send_ack(cm_node);
- break;
- case NES_CM_STATE_FIN_WAIT2:
- cm_node->state = NES_CM_STATE_TIME_WAIT;
- cm_node->tcp_cntxt.loc_seq_num ++;
- ret = send_ack(cm_node);
- /* need to schedule this to happen in 2MSL timeouts */
- cm_node->state = NES_CM_STATE_CLOSED;
- break;
- case NES_CM_STATE_CLOSE_WAIT:
- case NES_CM_STATE_LAST_ACK:
- case NES_CM_STATE_CLOSING:
- case NES_CM_STATE_TSA:
- default:
- nes_debug(NES_DBG_CM, "Received a fin while in %x state\n",
- cm_node->state);
- ret = -EINVAL;
- break;
- }
+/*
+ * free_retrans_entry() routines assumes that the retrans_list_lock has
+ * been acquired before calling.
+ */
+static void free_retrans_entry(struct nes_cm_node *cm_node)
+{
+ struct nes_timer_entry *send_entry;
+ send_entry = cm_node->send_entry;
+ if (send_entry) {
+ cm_node->send_entry = NULL;
+ dev_kfree_skb_any(send_entry->skb);
+ kfree(send_entry);
+ rem_ref_cm_node(cm_node->cm_core, cm_node);
}
+}
- if (datasize) {
- u8 *dataloc = skb->data;
- /* figure out what state we are in and handle transition to next state */
- switch (cm_node->state) {
- case NES_CM_STATE_LISTENING:
- case NES_CM_STATE_SYN_RCVD:
- case NES_CM_STATE_SYN_SENT:
- case NES_CM_STATE_FIN_WAIT1:
- case NES_CM_STATE_FIN_WAIT2:
- case NES_CM_STATE_CLOSE_WAIT:
- case NES_CM_STATE_LAST_ACK:
- case NES_CM_STATE_CLOSING:
- break;
- case NES_CM_STATE_MPAREQ_SENT:
- /* recv the mpa res frame, ret=frame len (incl priv data) */
- ret = parse_mpa(cm_node, dataloc, datasize);
- if (ret < 0)
- break;
- /* set the req frame payload len in skb */
- /* we are done handling this state, set node to a TSA state */
- cm_node->state = NES_CM_STATE_TSA;
- send_ack(cm_node);
- create_event(cm_node, NES_CM_EVENT_CONNECTED);
- break;
+static void cleanup_retrans_entry(struct nes_cm_node *cm_node)
+{
+ unsigned long flags;
- case NES_CM_STATE_ESTABLISHED:
- /* we are expecting an MPA req frame */
- ret = parse_mpa(cm_node, dataloc, datasize);
- if (ret < 0) {
- break;
- }
- cm_node->state = NES_CM_STATE_TSA;
- send_ack(cm_node);
- /* we got a valid MPA request, create an event */
- create_event(cm_node, NES_CM_EVENT_MPA_REQ);
- break;
- case NES_CM_STATE_TSA:
- handle_exception_pkt(cm_node, skb);
- break;
- case NES_CM_STATE_UNKNOWN:
- case NES_CM_STATE_INITED:
- default:
- ret = -1;
- }
- }
+ spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
+ free_retrans_entry(cm_node);
+ spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
+}
+
+/**
+ * process_packet
+ * Returns skb if to be freed, else it will return NULL if already used..
+ */
+static void process_packet(struct nes_cm_node *cm_node, struct sk_buff *skb,
+ struct nes_cm_core *cm_core)
+{
+ enum nes_tcpip_pkt_type pkt_type = NES_PKT_TYPE_UNKNOWN;
+ struct tcphdr *tcph = tcp_hdr(skb);
+ u32 fin_set = 0;
+ int ret = 0;
+ skb_pull(skb, ip_hdr(skb)->ihl << 2);
- return ret;
+ nes_debug(NES_DBG_CM, "process_packet: cm_node=%p state =%d syn=%d "
+ "ack=%d rst=%d fin=%d\n", cm_node, cm_node->state, tcph->syn,
+ tcph->ack, tcph->rst, tcph->fin);
+
+ if (tcph->rst)
+ pkt_type = NES_PKT_TYPE_RST;
+ else if (tcph->syn) {
+ pkt_type = NES_PKT_TYPE_SYN;
+ if (tcph->ack)
+ pkt_type = NES_PKT_TYPE_SYNACK;
+ } else if (tcph->ack)
+ pkt_type = NES_PKT_TYPE_ACK;
+ if (tcph->fin)
+ fin_set = 1;
+
+ switch (pkt_type) {
+ case NES_PKT_TYPE_SYN:
+ handle_syn_pkt(cm_node, skb, tcph);
+ break;
+ case NES_PKT_TYPE_SYNACK:
+ handle_synack_pkt(cm_node, skb, tcph);
+ break;
+ case NES_PKT_TYPE_ACK:
+ ret = handle_ack_pkt(cm_node, skb, tcph);
+ if (fin_set && !ret)
+ handle_fin_pkt(cm_node);
+ break;
+ case NES_PKT_TYPE_RST:
+ handle_rst_pkt(cm_node, skb, tcph);
+ break;
+ default:
+ if ((fin_set) && (!check_seq(cm_node, tcph, skb)))
+ handle_fin_pkt(cm_node);
+ drop_packet(skb);
+ break;
+ }
}
-
/**
* mini_cm_listen - create a listen node with params
*/
static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *cm_core,
- struct nes_vnic *nesvnic, struct nes_cm_info *cm_info)
+ struct nes_vnic *nesvnic, struct nes_cm_info *cm_info)
{
struct nes_cm_listener *listener;
unsigned long flags;
return NULL;
}
- memset(listener, 0, sizeof(struct nes_cm_listener));
listener->loc_addr = htonl(cm_info->loc_addr);
listener->loc_port = htons(cm_info->loc_port);
listener->reused_node = 0;
listener->cm_core = cm_core;
listener->nesvnic = nesvnic;
atomic_inc(&cm_core->node_cnt);
- atomic_inc(&cm_core->session_id);
- listener->session_id = (u32)(atomic_read(&cm_core->session_id) + current->tgid);
listener->conn_type = cm_info->conn_type;
listener->backlog = cm_info->backlog;
listener->listener_state = NES_CM_LISTENER_ACTIVE_STATE;
/**
* mini_cm_connect - make a connection node with params
*/
-struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core,
- struct nes_vnic *nesvnic, struct ietf_mpa_frame *mpa_frame,
- struct nes_cm_info *cm_info)
+static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core,
+ struct nes_vnic *nesvnic, u16 private_data_len,
+ void *private_data, struct nes_cm_info *cm_info)
{
int ret = 0;
struct nes_cm_node *cm_node;
struct nes_cm_listener *loopbackremotelistener;
struct nes_cm_node *loopbackremotenode;
struct nes_cm_info loopback_cm_info;
-
- u16 mpa_frame_size = sizeof(struct ietf_mpa_frame) +
- ntohs(mpa_frame->priv_data_len);
-
- cm_info->loc_addr = htonl(cm_info->loc_addr);
- cm_info->rem_addr = htonl(cm_info->rem_addr);
- cm_info->loc_port = htons(cm_info->loc_port);
- cm_info->rem_port = htons(cm_info->rem_port);
+ u16 mpa_frame_size = sizeof(struct ietf_mpa_frame) + private_data_len;
+ struct ietf_mpa_frame *mpa_frame = NULL;
/* create a CM connection node */
cm_node = make_cm_node(cm_core, nesvnic, cm_info, NULL);
if (!cm_node)
return NULL;
+ mpa_frame = &cm_node->mpa_frame;
+ 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);
- // set our node side to client (active) side
+ /* set our node side to client (active) side */
cm_node->tcp_cntxt.client = 1;
cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE;
if (cm_info->loc_addr == cm_info->rem_addr) {
- loopbackremotelistener = find_listener(cm_core, cm_node->rem_addr,
- cm_node->rem_port, NES_CM_LISTENER_ACTIVE_STATE);
+ loopbackremotelistener = find_listener(cm_core,
+ ntohl(nesvnic->local_ipaddr), cm_node->rem_port,
+ NES_CM_LISTENER_ACTIVE_STATE);
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);
+ 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 =
+ NES_CM_DEFAULT_RCV_WND_SCALE;
cm_node->loopbackpartner = loopbackremotenode;
- memcpy(loopbackremotenode->mpa_frame_buf, &mpa_frame->priv_data,
- mpa_frame_size);
- loopbackremotenode->mpa_frame_size = mpa_frame_size -
- sizeof(struct ietf_mpa_frame);
+ memcpy(loopbackremotenode->mpa_frame_buf, private_data,
+ private_data_len);
+ loopbackremotenode->mpa_frame_size = private_data_len;
- // we are done handling this state, set node to a TSA state
+ /* we are done handling this state. */
+ /* set node to a TSA state */
cm_node->state = NES_CM_STATE_TSA;
- cm_node->tcp_cntxt.rcv_nxt = loopbackremotenode->tcp_cntxt.loc_seq_num;
- loopbackremotenode->tcp_cntxt.rcv_nxt = cm_node->tcp_cntxt.loc_seq_num;
- cm_node->tcp_cntxt.max_snd_wnd = loopbackremotenode->tcp_cntxt.rcv_wnd;
- loopbackremotenode->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.rcv_wnd;
- cm_node->tcp_cntxt.snd_wnd = loopbackremotenode->tcp_cntxt.rcv_wnd;
- loopbackremotenode->tcp_cntxt.snd_wnd = cm_node->tcp_cntxt.rcv_wnd;
- cm_node->tcp_cntxt.snd_wscale = loopbackremotenode->tcp_cntxt.rcv_wscale;
- loopbackremotenode->tcp_cntxt.snd_wscale = cm_node->tcp_cntxt.rcv_wscale;
-
+ cm_node->tcp_cntxt.rcv_nxt =
+ loopbackremotenode->tcp_cntxt.loc_seq_num;
+ loopbackremotenode->tcp_cntxt.rcv_nxt =
+ cm_node->tcp_cntxt.loc_seq_num;
+ cm_node->tcp_cntxt.max_snd_wnd =
+ loopbackremotenode->tcp_cntxt.rcv_wnd;
+ loopbackremotenode->tcp_cntxt.max_snd_wnd =
+ cm_node->tcp_cntxt.rcv_wnd;
+ cm_node->tcp_cntxt.snd_wnd =
+ loopbackremotenode->tcp_cntxt.rcv_wnd;
+ loopbackremotenode->tcp_cntxt.snd_wnd =
+ cm_node->tcp_cntxt.rcv_wnd;
+ cm_node->tcp_cntxt.snd_wscale =
+ loopbackremotenode->tcp_cntxt.rcv_wscale;
+ loopbackremotenode->tcp_cntxt.snd_wscale =
+ cm_node->tcp_cntxt.rcv_wscale;
+ loopbackremotenode->state = NES_CM_STATE_MPAREQ_RCVD;
create_event(loopbackremotenode, NES_CM_EVENT_MPA_REQ);
}
return cm_node;
/* set our node side to client (active) side */
cm_node->tcp_cntxt.client = 1;
/* init our MPA frame ptr */
- memcpy(&cm_node->mpa_frame, mpa_frame, mpa_frame_size);
+ memcpy(mpa_frame->priv_data, private_data, private_data_len);
+
cm_node->mpa_frame_size = mpa_frame_size;
/* send a syn and goto syn sent state */
cm_node->state = NES_CM_STATE_SYN_SENT;
- ret = send_syn(cm_node, 0);
+ ret = send_syn(cm_node, 0, NULL);
+
+ if (ret) {
+ /* error in sending the syn free up the cm_node struct */
+ nes_debug(NES_DBG_CM, "Api - connect() FAILED: dest "
+ "addr=0x%08X, port=0x%04x, cm_node=%p, cm_id = %p.\n",
+ cm_node->rem_addr, cm_node->rem_port, cm_node,
+ cm_node->cm_id);
+ rem_ref_cm_node(cm_node->cm_core, cm_node);
+ cm_node = NULL;
+ }
- nes_debug(NES_DBG_CM, "Api - connect(): dest addr=0x%08X, port=0x%04x,"
- " cm_node=%p, cm_id = %p.\n",
- cm_node->rem_addr, cm_node->rem_port, cm_node, cm_node->cm_id);
+ if (cm_node)
+ nes_debug(NES_DBG_CM, "Api - connect(): dest addr=0x%08X,"
+ "port=0x%04x, cm_node=%p, cm_id = %p.\n",
+ cm_node->rem_addr, cm_node->rem_port, cm_node,
+ cm_node->cm_id);
return cm_node;
}
* mini_cm_accept - accept a connection
* This function is never called
*/
-int mini_cm_accept(struct nes_cm_core *cm_core, struct ietf_mpa_frame *mpa_frame,
- struct nes_cm_node *cm_node)
+static int mini_cm_accept(struct nes_cm_core *cm_core,
+ struct ietf_mpa_frame *mpa_frame, struct nes_cm_node *cm_node)
{
return 0;
}
/**
* mini_cm_reject - reject and teardown a connection
*/
-int mini_cm_reject(struct nes_cm_core *cm_core,
- struct ietf_mpa_frame *mpa_frame,
- struct nes_cm_node *cm_node)
+static int mini_cm_reject(struct nes_cm_core *cm_core,
+ struct ietf_mpa_frame *mpa_frame, struct nes_cm_node *cm_node)
{
int ret = 0;
- struct sk_buff *skb;
- u16 mpa_frame_size = sizeof(struct ietf_mpa_frame) +
- ntohs(mpa_frame->priv_data_len);
+ 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;
- skb = get_free_pkt(cm_node);
- if (!skb) {
- nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n");
- return -1;
- }
+ 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);
- /* send an MPA Request frame */
- form_cm_frame(skb, cm_node, NULL, 0, mpa_frame, mpa_frame_size, SET_ACK | SET_FIN);
- ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0);
+ if (cm_node->tcp_cntxt.client)
+ return ret;
+ cleanup_retrans_entry(cm_node);
- cm_node->state = NES_CM_STATE_CLOSED;
- ret = send_fin(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;
- if (ret < 0) {
- printk(KERN_INFO PFX "failed to send MPA Reply (reject)\n");
- return ret;
+ cm_id = loopback->cm_id;
+ rem_ref_cm_node(cm_core, loopback);
+ cm_id->rem_ref(cm_id);
+ }
}
return ret;
/**
* mini_cm_close
*/
-int mini_cm_close(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node)
+static int mini_cm_close(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node)
{
int ret = 0;
return -EINVAL;
switch (cm_node->state) {
- /* if passed in node is null, create a reference key node for node search */
- /* check if we found an owner node for this pkt */
- case NES_CM_STATE_SYN_RCVD:
- case NES_CM_STATE_SYN_SENT:
- case NES_CM_STATE_ONE_SIDE_ESTABLISHED:
- case NES_CM_STATE_ESTABLISHED:
- case NES_CM_STATE_ACCEPTING:
- case NES_CM_STATE_MPAREQ_SENT:
- cm_node->state = NES_CM_STATE_FIN_WAIT1;
- send_fin(cm_node, NULL);
- break;
- case NES_CM_STATE_CLOSE_WAIT:
- cm_node->state = NES_CM_STATE_LAST_ACK;
- send_fin(cm_node, NULL);
- break;
- case NES_CM_STATE_FIN_WAIT1:
- case NES_CM_STATE_FIN_WAIT2:
- case NES_CM_STATE_LAST_ACK:
- case NES_CM_STATE_TIME_WAIT:
- case NES_CM_STATE_CLOSING:
- ret = -1;
- break;
- case NES_CM_STATE_LISTENING:
- case NES_CM_STATE_UNKNOWN:
- case NES_CM_STATE_INITED:
- case NES_CM_STATE_CLOSED:
- case NES_CM_STATE_TSA:
- ret = rem_ref_cm_node(cm_core, cm_node);
- break;
+ case NES_CM_STATE_SYN_RCVD:
+ case NES_CM_STATE_SYN_SENT:
+ case NES_CM_STATE_ONE_SIDE_ESTABLISHED:
+ case NES_CM_STATE_ESTABLISHED:
+ case NES_CM_STATE_ACCEPTING:
+ case NES_CM_STATE_MPAREQ_SENT:
+ case NES_CM_STATE_MPAREQ_RCVD:
+ cleanup_retrans_entry(cm_node);
+ send_reset(cm_node, NULL);
+ break;
+ case NES_CM_STATE_CLOSE_WAIT:
+ cm_node->state = NES_CM_STATE_LAST_ACK;
+ send_fin(cm_node, NULL);
+ break;
+ case NES_CM_STATE_FIN_WAIT1:
+ case NES_CM_STATE_FIN_WAIT2:
+ case NES_CM_STATE_LAST_ACK:
+ case NES_CM_STATE_TIME_WAIT:
+ case NES_CM_STATE_CLOSING:
+ ret = -1;
+ break;
+ case NES_CM_STATE_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:
+ if (cm_node->send_entry)
+ printk(KERN_ERR "ERROR Close got called from STATE_TSA "
+ "send_entry=%p\n", cm_node->send_entry);
+ ret = rem_ref_cm_node(cm_core, cm_node);
+ break;
}
- cm_node->cm_id = NULL;
return ret;
}
* recv_pkt - recv an ETHERNET packet, and process it through CM
* node state machine
*/
-int mini_cm_recv_pkt(struct nes_cm_core *cm_core, struct nes_vnic *nesvnic,
- struct sk_buff *skb)
+static int mini_cm_recv_pkt(struct nes_cm_core *cm_core,
+ struct nes_vnic *nesvnic, struct sk_buff *skb)
{
struct nes_cm_node *cm_node = NULL;
struct nes_cm_listener *listener = NULL;
struct iphdr *iph;
struct tcphdr *tcph;
struct nes_cm_info nfo;
- int ret = 0;
+ int skb_handled = 1;
+ __be32 tmp_daddr, tmp_saddr;
- if (!skb || skb->len < sizeof(struct iphdr) + sizeof(struct tcphdr)) {
- ret = -EINVAL;
- goto out;
+ if (!skb)
+ return 0;
+ if (skb->len < sizeof(struct iphdr) + sizeof(struct tcphdr)) {
+ return 0;
}
iph = (struct iphdr *)skb->data;
tcph = (struct tcphdr *)(skb->data + sizeof(struct iphdr));
- skb_reset_network_header(skb);
- skb_set_transport_header(skb, sizeof(*tcph));
- skb->len = ntohs(iph->tot_len);
nfo.loc_addr = ntohl(iph->daddr);
nfo.loc_port = ntohs(tcph->dest);
nfo.rem_addr = ntohl(iph->saddr);
nfo.rem_port = ntohs(tcph->source);
- nes_debug(NES_DBG_CM, "Received packet: dest=0x%08X:0x%04X src=0x%08X:0x%04X\n",
- iph->daddr, tcph->dest, iph->saddr, tcph->source);
+ tmp_daddr = cpu_to_be32(iph->daddr);
+ tmp_saddr = cpu_to_be32(iph->saddr);
+
+ nes_debug(NES_DBG_CM, "Received packet: dest=%pI4:0x%04X src=%pI4:0x%04X\n",
+ &tmp_daddr, tcph->dest, &tmp_saddr, tcph->source);
- /* note: this call is going to increment cm_node ref count */
- cm_node = find_node(cm_core,
+ do {
+ cm_node = find_node(cm_core,
nfo.rem_port, nfo.rem_addr,
nfo.loc_port, nfo.loc_addr);
- if (!cm_node) {
- listener = find_listener(cm_core, nfo.loc_addr, nfo.loc_port,
+ if (!cm_node) {
+ /* Only type of packet accepted are for */
+ /* the PASSIVE open (syn only) */
+ if ((!tcph->syn) || (tcph->ack)) {
+ skb_handled = 0;
+ break;
+ }
+ listener = find_listener(cm_core, nfo.loc_addr,
+ nfo.loc_port,
NES_CM_LISTENER_ACTIVE_STATE);
- if (listener) {
+ if (!listener) {
+ nfo.cm_id = NULL;
+ nfo.conn_type = 0;
+ nes_debug(NES_DBG_CM, "Unable to find listener for the pkt\n");
+ skb_handled = 0;
+ break;
+ }
nfo.cm_id = listener->cm_id;
nfo.conn_type = listener->conn_type;
- } else {
- nfo.cm_id = NULL;
- nfo.conn_type = 0;
- }
-
- cm_node = make_cm_node(cm_core, nesvnic, &nfo, listener);
- if (!cm_node) {
- nes_debug(NES_DBG_CM, "Unable to allocate node\n");
- if (listener) {
- nes_debug(NES_DBG_CM, "unable to allocate node and decrementing listener refcount\n");
+ cm_node = make_cm_node(cm_core, nesvnic, &nfo,
+ listener);
+ if (!cm_node) {
+ nes_debug(NES_DBG_CM, "Unable to allocate "
+ "node\n");
+ cm_packets_dropped++;
atomic_dec(&listener->ref_count);
+ dev_kfree_skb_any(skb);
+ break;
}
- ret = -1;
- goto out;
- }
- if (!listener) {
- nes_debug(NES_DBG_CM, "Packet found for unknown port %x refcnt=%d\n",
- nfo.loc_port, atomic_read(&cm_node->ref_count));
- if (!tcph->rst) {
- nes_debug(NES_DBG_CM, "Packet found for unknown port=%d"
- " rem_port=%d refcnt=%d\n",
- nfo.loc_port, nfo.rem_port, atomic_read(&cm_node->ref_count));
-
- cm_node->tcp_cntxt.rcv_nxt = ntohl(tcph->seq);
- cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
- send_reset(cm_node);
+ if (!tcph->rst && !tcph->fin) {
+ cm_node->state = NES_CM_STATE_LISTENING;
+ } else {
+ cm_packets_dropped++;
+ rem_ref_cm_node(cm_core, cm_node);
+ dev_kfree_skb_any(skb);
+ break;
}
+ add_ref_cm_node(cm_node);
+ } else if (cm_node->state == NES_CM_STATE_TSA) {
rem_ref_cm_node(cm_core, cm_node);
- ret = -1;
- goto out;
+ atomic_inc(&cm_accel_dropped_pkts);
+ dev_kfree_skb_any(skb);
+ break;
}
- add_ref_cm_node(cm_node);
- cm_node->state = NES_CM_STATE_LISTENING;
- }
-
- nes_debug(NES_DBG_CM, "Processing Packet for node %p, data = (%p):\n",
- cm_node, skb->data);
- process_packet(cm_node, skb, cm_core);
-
- rem_ref_cm_node(cm_core, cm_node);
- out:
- if (skb)
- dev_kfree_skb_any(skb);
- return ret;
+ skb_reset_network_header(skb);
+ skb_set_transport_header(skb, sizeof(*tcph));
+ skb->len = ntohs(iph->tot_len);
+ process_packet(cm_node, skb, cm_core);
+ rem_ref_cm_node(cm_core, cm_node);
+ } while (0);
+ return skb_handled;
}
/**
* nes_cm_alloc_core - allocate a top level instance of a cm core
*/
-struct nes_cm_core *nes_cm_alloc_core(void)
+static struct nes_cm_core *nes_cm_alloc_core(void)
{
- int i;
-
struct nes_cm_core *cm_core;
- struct sk_buff *skb = NULL;
/* setup the CM core */
/* alloc top level core control structure */
cm_core->state = NES_CM_STATE_INITED;
cm_core->free_tx_pkt_max = NES_CM_DEFAULT_FREE_PKTS;
- atomic_set(&cm_core->session_id, 0);
atomic_set(&cm_core->events_posted, 0);
- /* init the packet lists */
- skb_queue_head_init(&cm_core->tx_free_list);
-
- for (i = 0; i < NES_CM_DEFAULT_FRAME_CNT; i++) {
- skb = dev_alloc_skb(cm_core->mtu);
- if (!skb) {
- kfree(cm_core);
- return NULL;
- }
- /* add 'raw' skb to free frame list */
- skb_queue_head(&cm_core->tx_free_list, skb);
- }
-
cm_core->api = &nes_cm_api;
spin_lock_init(&cm_core->ht_lock);
/**
* mini_cm_dealloc_core - deallocate a top level instance of a cm core
*/
-int mini_cm_dealloc_core(struct nes_cm_core *cm_core)
+static int mini_cm_dealloc_core(struct nes_cm_core *cm_core)
{
nes_debug(NES_DBG_CM, "De-Alloc CM Core (%p)\n", cm_core);
/**
* mini_cm_get
*/
-int mini_cm_get(struct nes_cm_core *cm_core)
+static int mini_cm_get(struct nes_cm_core *cm_core)
{
return cm_core->state;
}
/**
* mini_cm_set
*/
-int mini_cm_set(struct nes_cm_core *cm_core, u32 type, u32 value)
+static int mini_cm_set(struct nes_cm_core *cm_core, u32 type, u32 value)
{
int ret = 0;
switch (type) {
- case NES_CM_SET_PKT_SIZE:
- cm_core->mtu = value;
- break;
- case NES_CM_SET_FREE_PKT_Q_SIZE:
- cm_core->free_tx_pkt_max = value;
- break;
- default:
- /* unknown set option */
- ret = -EINVAL;
+ 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);
- /* nes_add_ref(&nesqp->ibqp); */
- /* 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);
- nes_rem_ref(&nesqp->ibqp);
- }
+ work = kzalloc(sizeof *work, GFP_ATOMIC);
+ if (!work)
+ return -ENOMEM; /* Timer will clean up */
+ nes_add_ref(&nesqp->ibqp);
+ work->nesqp = nesqp;
+ INIT_WORK(&work->work, nes_disconnect_worker);
+ queue_work(g_cm_core->disconn_wq, &work->work);
return 0;
}
/**
* nes_disconnect_worker
*/
-void nes_disconnect_worker(struct work_struct *work)
+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);
}
/**
* nes_cm_disconn_true
*/
-int nes_cm_disconn_true(struct nes_qp *nesqp)
+static int nes_cm_disconn_true(struct nes_qp *nesqp)
{
unsigned long flags;
int ret = 0;
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");
nes_debug(NES_DBG_CM, "QP%u disconnect_worker cmid is NULL\n",
nesqp->hwqp.qp_id);
spin_unlock_irqrestore(&nesqp->lock, flags);
- nes_rem_ref(&nesqp->ibqp);
return -1;
}
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);
- nes_debug(NES_DBG_CM, "set ibqp_state=%u\n", nesqp->ibqp_state);
+ if ((issue_flush) && (nesqp->destroyed == 0)) {
+ /* Flush the queue(s) */
+ if (nesqp->hw_iwarp_state >= NES_AEQE_IWARP_STATE_TERMINATE)
+ flush_q |= NES_CQP_FLUSH_SQ;
+ flush_wqes(nesvnic->nesdev, nesqp, flush_q, 1);
- if ((nesqp->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 (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 ((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) {
- issued_disconnect_reset = 1;
- 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;
cm_event.private_data_len = 0;
- nes_debug(NES_DBG_CM, "Generating a CM Disconnect Event for "
- " QP%u, SQ Head = %u, SQ Tail = %u. cm_id = %p, refcount = %u.\n",
- nesqp->hwqp.qp_id,
- nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail, cm_id,
- atomic_read(&nesqp->refcount));
+ nes_debug(NES_DBG_CM, "Generating a CM Disconnect Event"
+ " for QP%u, SQ Head = %u, SQ Tail = %u. "
+ "cm_id = %p, refcount = %u.\n",
+ nesqp->hwqp.qp_id, nesqp->hwqp.sq_head,
+ nesqp->hwqp.sq_tail, cm_id,
+ atomic_read(&nesqp->refcount));
- 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);
+ nes_debug(NES_DBG_CM, "OFA CM event_handler "
+ "returned, ret=%d\n", ret);
}
- 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);
- }
-
- /* This reference is from either ModifyQP or the AE processing,
- there is still a race here with modifyqp */
- nes_rem_ref(&nesqp->ibqp);
-
- } 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);
- nes_rem_ref(&nesqp->ibqp);
- }
}
- } else {
- nesqp->disconn_pending = 0;
- spin_unlock_irqrestore(&nesqp->lock, flags);
}
- nes_rem_ref(&nesqp->ibqp);
return 0;
}
/**
* nes_disconnect
*/
-int nes_disconnect(struct nes_qp *nesqp, int abrupt)
+static int nes_disconnect(struct nes_qp *nesqp, int abrupt)
{
int ret = 0;
struct nes_vnic *nesvnic;
struct nes_device *nesdev;
+ struct nes_ib_device *nesibdev;
nesvnic = to_nesvnic(nesqp->ibqp.device);
if (!nesvnic)
return -EINVAL;
nesdev = nesvnic->nesdev;
+ nesibdev = nesvnic->nesibdev;
nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n",
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);
nes_debug(NES_DBG_CM, "Call close API\n");
g_cm_core->api->close(g_cm_core, nesqp->cm_node);
- nesqp->cm_node = NULL;
}
return ret;
struct nes_v4_quad nes_quad;
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)
nesdev = nesvnic->nesdev;
adapter = nesdev->nesadapter;
- nes_debug(NES_DBG_CM, "nesvnic=%p, netdev=%p, %s\n",
- nesvnic, nesvnic->netdev, nesvnic->netdev->name);
-
- /* since this is from a listen, we were able to put node handle into cm_id */
cm_node = (struct nes_cm_node *)cm_id->provider_data;
+ nes_debug(NES_DBG_CM, "nes_accept: cm_node= %p nesvnic=%p, netdev=%p,"
+ "%s\n", cm_node, nesvnic, nesvnic->netdev,
+ nesvnic->netdev->name);
+
+ if (NES_CM_STATE_LISTENER_DESTROYED == cm_node->state) {
+ if (cm_node->loopbackpartner)
+ rem_ref_cm_node(cm_node->cm_core, cm_node->loopbackpartner);
+ rem_ref_cm_node(cm_node->cm_core, cm_node);
+ return -EINVAL;
+ }
/* associate the node with the QP */
nesqp->cm_node = (void *)cm_node;
+ cm_node->nesqp = nesqp;
- nes_debug(NES_DBG_CM, "QP%u, cm_node=%p, jiffies = %lu\n",
- nesqp->hwqp.qp_id, cm_node, jiffies);
+ nes_debug(NES_DBG_CM, "QP%u, cm_node=%p, jiffies = %lu listener = %p\n",
+ nesqp->hwqp.qp_id, cm_node, jiffies, cm_node->listener);
atomic_inc(&cm_accepts);
nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n",
atomic_read(&nesvnic->netdev->refcnt));
- /* allocate the ietf frame and space for private data */
- nesqp->ietf_frame = pci_alloc_consistent(nesdev->pcidev,
- sizeof(struct ietf_mpa_frame) + conn_param->private_data_len,
- &nesqp->ietf_frame_pbase);
+ /* allocate the ietf frame and space for private data */
+ nesqp->ietf_frame = pci_alloc_consistent(nesdev->pcidev,
+ sizeof(struct ietf_mpa_frame) + conn_param->private_data_len,
+ &nesqp->ietf_frame_pbase);
- if (!nesqp->ietf_frame) {
- nes_debug(NES_DBG_CM, "Unable to allocate memory for private data\n");
- return -ENOMEM;
- }
+ if (!nesqp->ietf_frame) {
+ nes_debug(NES_DBG_CM, "Unable to allocate memory for private "
+ "data\n");
+ return -ENOMEM;
+ }
- /* setup the MPA frame */
- nesqp->private_data_len = conn_param->private_data_len;
- memcpy(nesqp->ietf_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE);
+ /* setup the MPA frame */
+ nesqp->private_data_len = conn_param->private_data_len;
+ memcpy(nesqp->ietf_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE);
- memcpy(nesqp->ietf_frame->priv_data, conn_param->private_data,
- conn_param->private_data_len);
+ memcpy(nesqp->ietf_frame->priv_data, conn_param->private_data,
+ conn_param->private_data_len);
- nesqp->ietf_frame->priv_data_len = cpu_to_be16(conn_param->private_data_len);
- nesqp->ietf_frame->rev = mpa_version;
- nesqp->ietf_frame->flags = IETF_MPA_FLAGS_CRC;
+ nesqp->ietf_frame->priv_data_len =
+ cpu_to_be16(conn_param->private_data_len);
+ nesqp->ietf_frame->rev = mpa_version;
+ nesqp->ietf_frame->flags = IETF_MPA_FLAGS_CRC;
- /* setup our first outgoing iWarp send WQE (the IETF frame response) */
- wqe = &nesqp->hwqp.sq_vbase[0];
+ /* setup our first outgoing iWarp send WQE (the IETF frame response) */
+ wqe = &nesqp->hwqp.sq_vbase[0];
- if (cm_id->remote_addr.sin_addr.s_addr != cm_id->local_addr.sin_addr.s_addr) {
- u64temp = (unsigned long)nesqp;
- u64temp |= NES_SW_CONTEXT_ALIGN>>1;
- set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX,
- u64temp);
- wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] =
- cpu_to_le32(NES_IWARP_SQ_WQE_STREAMING | NES_IWARP_SQ_WQE_WRPDU);
- wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] =
- cpu_to_le32(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));
- 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;
-
- 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));
+ 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;
}
- nesqp->skip_lsmm = 1;
+
+ ibmr->pd = &nespd->ibpd;
+ ibmr->device = nespd->ibpd.device;
+ nesqp->lsmm_mr = ibmr;
+
+ u64temp |= NES_SW_CONTEXT_ALIGN>>1;
+ set_wqe_64bit_value(wqe->wqe_words,
+ NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX,
+ u64temp);
+ wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] =
+ cpu_to_le32(NES_IWARP_SQ_WQE_STREAMING |
+ NES_IWARP_SQ_WQE_WRPDU);
+ wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] =
+ cpu_to_le32(conn_param->private_data_len +
+ sizeof(struct ietf_mpa_frame));
+ 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] = 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_WRPDU);
+ }
+ nesqp->skip_lsmm = 1;
/* Cache the cm_id in the qp */
cm_id->provider_data = nesqp;
nesqp->active_conn = 0;
+ if (cm_node->state == NES_CM_STATE_TSA)
+ nes_debug(NES_DBG_CM, "Already state = TSA for cm_node=%p\n",
+ cm_node);
+
nes_cm_init_tsa_conn(nesqp, cm_node);
- nesqp->nesqp_context->tcpPorts[0] = cpu_to_le16(ntohs(cm_id->local_addr.sin_port));
- nesqp->nesqp_context->tcpPorts[1] = cpu_to_le16(ntohs(cm_id->remote_addr.sin_port));
- nesqp->nesqp_context->ip0 = cpu_to_le32(ntohl(cm_id->remote_addr.sin_addr.s_addr));
+ nesqp->nesqp_context->tcpPorts[0] =
+ cpu_to_le16(ntohs(cm_id->local_addr.sin_port));
+ nesqp->nesqp_context->tcpPorts[1] =
+ cpu_to_le16(ntohs(cm_id->remote_addr.sin_port));
+
+ if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr))
+ nesqp->nesqp_context->ip0 =
+ cpu_to_le32(ntohl(nesvnic->local_ipaddr));
+ else
+ nesqp->nesqp_context->ip0 =
+ cpu_to_le32(ntohl(cm_id->remote_addr.sin_addr.s_addr));
nesqp->nesqp_context->misc2 |= cpu_to_le32(
- (u32)PCI_FUNC(nesdev->pcidev->devfn) << NES_QPCONTEXT_MISC2_SRC_IP_SHIFT);
+ (u32)PCI_FUNC(nesdev->pcidev->devfn) <<
+ NES_QPCONTEXT_MISC2_SRC_IP_SHIFT);
- nesqp->nesqp_context->arp_index_vlan |= cpu_to_le32(
- nes_arp_table(nesdev, le32_to_cpu(nesqp->nesqp_context->ip0), NULL,
+ nesqp->nesqp_context->arp_index_vlan |=
+ cpu_to_le32(nes_arp_table(nesdev,
+ le32_to_cpu(nesqp->nesqp_context->ip0), NULL,
NES_ARP_RESOLVE) << 16);
nesqp->nesqp_context->ts_val_delta = cpu_to_le32(
- jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW));
+ jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW));
nesqp->nesqp_context->ird_index = cpu_to_le32(nesqp->hwqp.qp_id);
nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(
- ((u32)1 << NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT));
- nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32((u32)conn_param->ord);
+ ((u32)1 << NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT));
+ nesqp->nesqp_context->ird_ord_sizes |=
+ cpu_to_le32((u32)conn_param->ord);
memset(&nes_quad, 0, sizeof(nes_quad));
- nes_quad.DstIpAdrIndex = cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24);
- nes_quad.SrcIpadr = cm_id->remote_addr.sin_addr.s_addr;
- nes_quad.TcpPorts[0] = cm_id->remote_addr.sin_port;
- nes_quad.TcpPorts[1] = cm_id->local_addr.sin_port;
+ nes_quad.DstIpAdrIndex =
+ cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24);
+ if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr))
+ nes_quad.SrcIpadr = nesvnic->local_ipaddr;
+ else
+ nes_quad.SrcIpadr = cm_id->remote_addr.sin_addr.s_addr;
+ nes_quad.TcpPorts[0] = cm_id->remote_addr.sin_port;
+ nes_quad.TcpPorts[1] = cm_id->local_addr.sin_port;
/* Produce hash key */
crc_value = get_crc_value(&nes_quad);
nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff);
nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, CRC = 0x%08X\n",
- nesqp->hte_index, nesqp->hte_index & adapter->hte_index_mask);
+ nesqp->hte_index, nesqp->hte_index & adapter->hte_index_mask);
nesqp->hte_index &= adapter->hte_index_mask;
nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index);
cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node);
- nes_debug(NES_DBG_CM, "QP%u, Destination IP = 0x%08X:0x%04X, local = 0x%08X:0x%04X,"
- " rcv_nxt=0x%08X, snd_nxt=0x%08X, mpa + private data length=%zu.\n",
- nesqp->hwqp.qp_id,
+ nes_debug(NES_DBG_CM, "QP%u, Destination IP = 0x%08X:0x%04X, local = "
+ "0x%08X:0x%04X, rcv_nxt=0x%08X, snd_nxt=0x%08X, mpa + "
+ "private data length=%zu.\n", nesqp->hwqp.qp_id,
ntohl(cm_id->remote_addr.sin_addr.s_addr),
ntohs(cm_id->remote_addr.sin_port),
ntohl(cm_id->local_addr.sin_addr.s_addr),
ntohs(cm_id->local_addr.sin_port),
le32_to_cpu(nesqp->nesqp_context->rcv_nxt),
le32_to_cpu(nesqp->nesqp_context->snd_nxt),
- conn_param->private_data_len+sizeof(struct ietf_mpa_frame));
+ conn_param->private_data_len +
+ sizeof(struct ietf_mpa_frame));
- attr.qp_state = IB_QPS_RTS;
- nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
- /* 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;
cm_event.private_data = NULL;
cm_event.private_data_len = 0;
ret = cm_id->event_handler(cm_id, &cm_event);
+ attr.qp_state = IB_QPS_RTS;
+ nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
if (cm_node->loopbackpartner) {
- cm_node->loopbackpartner->mpa_frame_size = nesqp->private_data_len;
+ cm_node->loopbackpartner->mpa_frame_size =
+ nesqp->private_data_len;
/* copy entire MPA frame to our cm_node's frame */
- memcpy(cm_node->loopbackpartner->mpa_frame_buf, nesqp->ietf_frame->priv_data,
- nesqp->private_data_len);
+ memcpy(cm_node->loopbackpartner->mpa_frame_buf,
+ nesqp->ietf_frame->priv_data, nesqp->private_data_len);
create_event(cm_node->loopbackpartner, NES_CM_EVENT_CONNECTED);
}
if (ret)
- printk("%s[%u] OFA CM event_handler returned, ret=%d\n",
- __FUNCTION__, __LINE__, ret);
+ printk(KERN_ERR "%s[%u] OFA CM event_handler returned, "
+ "ret=%d\n", __func__, __LINE__, ret);
+ 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);
return 0;
}
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;
- atomic_inc(&cm_connects);
+ if (!(cm_id->local_addr.sin_port) || !(cm_id->remote_addr.sin_port))
+ return -EINVAL;
- nesqp->ietf_frame = kzalloc(sizeof(struct ietf_mpa_frame) +
- conn_param->private_data_len, GFP_KERNEL);
- if (!nesqp->ietf_frame)
- return -ENOMEM;
+ nes_debug(NES_DBG_CM, "QP%u, current IP = 0x%08X, Destination IP = "
+ "0x%08X:0x%04X, local = 0x%08X:0x%04X.\n", nesqp->hwqp.qp_id,
+ ntohl(nesvnic->local_ipaddr),
+ ntohl(cm_id->remote_addr.sin_addr.s_addr),
+ ntohs(cm_id->remote_addr.sin_port),
+ ntohl(cm_id->local_addr.sin_addr.s_addr),
+ ntohs(cm_id->local_addr.sin_port));
- /* set qp as having an active connection */
+ atomic_inc(&cm_connects);
nesqp->active_conn = 1;
- nes_debug(NES_DBG_CM, "QP%u, Destination IP = 0x%08X:0x%04X, local = 0x%08X:0x%04X.\n",
- nesqp->hwqp.qp_id,
- ntohl(cm_id->remote_addr.sin_addr.s_addr),
- ntohs(cm_id->remote_addr.sin_port),
- ntohl(cm_id->local_addr.sin_addr.s_addr),
- ntohs(cm_id->local_addr.sin_port));
-
/* cache the cm_id in the qp */
nesqp->cm_id = cm_id;
cm_id->provider_data = nesqp;
- /* copy the private data */
- if (conn_param->private_data_len) {
- memcpy(nesqp->ietf_frame->priv_data, conn_param->private_data,
- conn_param->private_data_len);
- }
-
nesqp->private_data_len = conn_param->private_data_len;
nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32((u32)conn_param->ord);
nes_debug(NES_DBG_CM, "requested ord = 0x%08X.\n", (u32)conn_param->ord);
- nes_debug(NES_DBG_CM, "mpa private data len =%u\n", conn_param->private_data_len);
-
- strcpy(&nesqp->ietf_frame->key[0], IEFT_MPA_KEY_REQ);
- nesqp->ietf_frame->flags = IETF_MPA_FLAGS_CRC;
- nesqp->ietf_frame->rev = IETF_MPA_VERSION;
- nesqp->ietf_frame->priv_data_len = htons(conn_param->private_data_len);
+ nes_debug(NES_DBG_CM, "mpa private data len =%u\n",
+ conn_param->private_data_len);
- if (cm_id->local_addr.sin_addr.s_addr != cm_id->remote_addr.sin_addr.s_addr)
+ if (cm_id->local_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);
+ PCI_FUNC(nesdev->pcidev->devfn), NES_MANAGE_APBVT_ADD);
+ apbvt_set = 1;
+ }
/* set up the connection params for the node */
- cm_info.loc_addr = (cm_id->local_addr.sin_addr.s_addr);
- cm_info.loc_port = (cm_id->local_addr.sin_port);
- cm_info.rem_addr = (cm_id->remote_addr.sin_addr.s_addr);
- cm_info.rem_port = (cm_id->remote_addr.sin_port);
+ cm_info.loc_addr = htonl(cm_id->local_addr.sin_addr.s_addr);
+ cm_info.loc_port = htons(cm_id->local_addr.sin_port);
+ cm_info.rem_addr = htonl(cm_id->remote_addr.sin_addr.s_addr);
+ cm_info.rem_port = htons(cm_id->remote_addr.sin_port);
cm_info.cm_id = cm_id;
cm_info.conn_type = NES_CM_IWARP_CONN_TYPE;
cm_id->add_ref(cm_id);
- nes_add_ref(&nesqp->ibqp);
/* create a connect CM node connection */
- cm_node = g_cm_core->api->connect(g_cm_core, nesvnic, nesqp->ietf_frame, &cm_info);
+ cm_node = g_cm_core->api->connect(g_cm_core, nesvnic,
+ conn_param->private_data_len, (void *)conn_param->private_data,
+ &cm_info);
if (!cm_node) {
- if (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);
- nes_rem_ref(&nesqp->ibqp);
- kfree(nesqp->ietf_frame);
- nesqp->ietf_frame = NULL;
+ PCI_FUNC(nesdev->pcidev->devfn),
+ NES_MANAGE_APBVT_DEL);
+
cm_id->rem_ref(cm_id);
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);
return 0;
}
cm_node = g_cm_core->api->listen(g_cm_core, nesvnic, &cm_info);
if (!cm_node) {
- printk("%s[%u] Error returned from listen API call\n",
- __FUNCTION__, __LINE__);
+ printk(KERN_ERR "%s[%u] Error returned from listen API call\n",
+ __func__, __LINE__);
return -ENOMEM;
}
cm_id->provider_data = cm_node;
if (!cm_node->reused_node) {
- err = nes_manage_apbvt(nesvnic, ntohs(cm_id->local_addr.sin_port),
- PCI_FUNC(nesvnic->nesdev->pcidev->devfn), NES_MANAGE_APBVT_ADD);
+ err = nes_manage_apbvt(nesvnic,
+ ntohs(cm_id->local_addr.sin_port),
+ PCI_FUNC(nesvnic->nesdev->pcidev->devfn),
+ NES_MANAGE_APBVT_ADD);
if (err) {
- printk("nes_manage_apbvt call returned %d.\n", err);
+ printk(KERN_ERR "nes_manage_apbvt call returned %d.\n",
+ err);
g_cm_core->api->stop_listener(g_cm_core, (void *)cm_node);
return err;
}
*/
int nes_cm_recv(struct sk_buff *skb, struct net_device *netdevice)
{
+ int rc = 0;
cm_packets_received++;
if ((g_cm_core) && (g_cm_core->api)) {
- g_cm_core->api->recv_pkt(g_cm_core, netdev_priv(netdevice), skb);
+ rc = g_cm_core->api->recv_pkt(g_cm_core, netdev_priv(netdevice), skb);
} else {
nes_debug(NES_DBG_CM, "Unable to process packet for CM,"
" cm is not setup properly.\n");
}
- return 0;
+ return rc;
}
* cm_event_connected
* handle a connected event, setup QPs and HW
*/
-void cm_event_connected(struct nes_cm_event *event)
+static void cm_event_connected(struct nes_cm_event *event)
{
u64 u64temp;
struct nes_qp *nesqp;
nes_cm_init_tsa_conn(nesqp, cm_node);
/* set the QP tsa context */
- nesqp->nesqp_context->tcpPorts[0] = cpu_to_le16(ntohs(cm_id->local_addr.sin_port));
- nesqp->nesqp_context->tcpPorts[1] = cpu_to_le16(ntohs(cm_id->remote_addr.sin_port));
- nesqp->nesqp_context->ip0 = cpu_to_le32(ntohl(cm_id->remote_addr.sin_addr.s_addr));
+ nesqp->nesqp_context->tcpPorts[0] =
+ cpu_to_le16(ntohs(cm_id->local_addr.sin_port));
+ nesqp->nesqp_context->tcpPorts[1] =
+ cpu_to_le16(ntohs(cm_id->remote_addr.sin_port));
+ if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr))
+ nesqp->nesqp_context->ip0 =
+ cpu_to_le32(ntohl(nesvnic->local_ipaddr));
+ else
+ nesqp->nesqp_context->ip0 =
+ cpu_to_le32(ntohl(cm_id->remote_addr.sin_addr.s_addr));
nesqp->nesqp_context->misc2 |= cpu_to_le32(
- (u32)PCI_FUNC(nesdev->pcidev->devfn) << NES_QPCONTEXT_MISC2_SRC_IP_SHIFT);
+ (u32)PCI_FUNC(nesdev->pcidev->devfn) <<
+ NES_QPCONTEXT_MISC2_SRC_IP_SHIFT);
nesqp->nesqp_context->arp_index_vlan |= cpu_to_le32(
- nes_arp_table(nesdev, le32_to_cpu(nesqp->nesqp_context->ip0),
+ nes_arp_table(nesdev,
+ le32_to_cpu(nesqp->nesqp_context->ip0),
NULL, NES_ARP_RESOLVE) << 16);
nesqp->nesqp_context->ts_val_delta = cpu_to_le32(
jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW));
nesqp->nesqp_context->ird_index = cpu_to_le32(nesqp->hwqp.qp_id);
nesqp->nesqp_context->ird_ord_sizes |=
- cpu_to_le32((u32)1 << NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT);
+ cpu_to_le32((u32)1 <<
+ NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT);
/* Adjust tail for not having a LSMM */
nesqp->hwqp.sq_tail = 1;
#if defined(NES_SEND_FIRST_WRITE)
- if (cm_node->send_write0) {
- nes_debug(NES_DBG_CM, "Sending first write.\n");
- wqe = &nesqp->hwqp.sq_vbase[0];
- u64temp = (unsigned long)nesqp;
- u64temp |= NES_SW_CONTEXT_ALIGN>>1;
- set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX,
- u64temp);
- wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(NES_IWARP_SQ_OP_RDMAW);
- wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = 0;
- wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_LOW_IDX] = 0;
- wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_HIGH_IDX] = 0;
- wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = 0;
- wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 0;
-
- /* use the reserved spot on the WQ for the extra first WQE */
- nesqp->nesqp_context->ird_ord_sizes &= cpu_to_le32(~(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT |
- NES_QPCONTEXT_ORDIRD_WRPDU | NES_QPCONTEXT_ORDIRD_ALSMM));
- nesqp->skip_lsmm = 1;
- nesqp->hwqp.sq_tail = 0;
- nes_write32(nesdev->regs + NES_WQE_ALLOC,
- (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
- }
+ if (cm_node->send_write0) {
+ nes_debug(NES_DBG_CM, "Sending first write.\n");
+ wqe = &nesqp->hwqp.sq_vbase[0];
+ u64temp = (unsigned long)nesqp;
+ u64temp |= NES_SW_CONTEXT_ALIGN>>1;
+ set_wqe_64bit_value(wqe->wqe_words,
+ NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, u64temp);
+ wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] =
+ cpu_to_le32(NES_IWARP_SQ_OP_RDMAW);
+ wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = 0;
+ wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_LOW_IDX] = 0;
+ wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_HIGH_IDX] = 0;
+ wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = 0;
+ wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 0;
+
+ /* use the reserved spot on the WQ for the extra first WQE */
+ nesqp->nesqp_context->ird_ord_sizes &=
+ cpu_to_le32(~(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT |
+ NES_QPCONTEXT_ORDIRD_WRPDU |
+ NES_QPCONTEXT_ORDIRD_ALSMM));
+ nesqp->skip_lsmm = 1;
+ nesqp->hwqp.sq_tail = 0;
+ nes_write32(nesdev->regs + NES_WQE_ALLOC,
+ (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
+ }
#endif
memset(&nes_quad, 0, sizeof(nes_quad));
- nes_quad.DstIpAdrIndex = cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24);
- nes_quad.SrcIpadr = cm_id->remote_addr.sin_addr.s_addr;
+ nes_quad.DstIpAdrIndex =
+ cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24);
+ if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr))
+ nes_quad.SrcIpadr = nesvnic->local_ipaddr;
+ else
+ nes_quad.SrcIpadr = cm_id->remote_addr.sin_addr.s_addr;
nes_quad.TcpPorts[0] = cm_id->remote_addr.sin_port;
nes_quad.TcpPorts[1] = cm_id->local_addr.sin_port;
nesqp->private_data_len = (u8) cm_node->mpa_frame_size;
cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node);
- /* modify QP state to rts */
- attr.qp_state = IB_QPS_RTS;
- nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
-
/* notify OF layer we successfully created the requested connection */
cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
cm_event.status = IW_CM_EVENT_STATUS_ACCEPTED;
cm_event.local_addr.sin_port = cm_id->local_addr.sin_port;
cm_event.remote_addr = cm_id->remote_addr;
- cm_event.private_data = (void *)event->cm_node->mpa_frame_buf;
- cm_event.private_data_len = (u8) event->cm_node->mpa_frame_size;
+ cm_event.private_data = (void *)event->cm_node->mpa_frame_buf;
+ cm_event.private_data_len = (u8) event->cm_node->mpa_frame_size;
cm_event.local_addr.sin_addr.s_addr = event->cm_info.rem_addr;
ret = cm_id->event_handler(cm_id, &cm_event);
nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret);
if (ret)
- printk("%s[%u] OFA CM event_handler returned, ret=%d\n",
- __FUNCTION__, __LINE__, ret);
- nes_debug(NES_DBG_CM, "Exiting connect thread for QP%u. jiffies = %lu\n",
- nesqp->hwqp.qp_id, jiffies );
+ printk(KERN_ERR "%s[%u] OFA CM event_handler returned, "
+ "ret=%d\n", __func__, __LINE__, ret);
+ attr.qp_state = IB_QPS_RTS;
+ nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
- nes_rem_ref(&nesqp->ibqp);
+ nes_debug(NES_DBG_CM, "Exiting connect thread for QP%u. jiffies = "
+ "%lu\n", nesqp->hwqp.qp_id, jiffies);
return;
}
/**
* cm_event_connect_error
*/
-void cm_event_connect_error(struct nes_cm_event *event)
+static void cm_event_connect_error(struct nes_cm_event *event)
{
struct nes_qp *nesqp;
struct iw_cm_id *cm_id;
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;
cm_event.private_data = NULL;
cm_event.private_data_len = 0;
- nes_debug(NES_DBG_CM, "call CM_EVENT REJECTED, local_addr=%08x, remove_addr=%08x\n",
- cm_event.local_addr.sin_addr.s_addr, cm_event.remote_addr.sin_addr.s_addr);
+ nes_debug(NES_DBG_CM, "call CM_EVENT 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);
nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret);
if (ret)
- printk("%s[%u] OFA CM event_handler returned, ret=%d\n",
- __FUNCTION__, __LINE__, ret);
- nes_rem_ref(&nesqp->ibqp);
- cm_id->rem_ref(cm_id);
+ printk(KERN_ERR "%s[%u] OFA CM event_handler returned, "
+ "ret=%d\n", __func__, __LINE__, ret);
+ cm_id->rem_ref(cm_id);
+ rem_ref_cm_node(event->cm_node->cm_core, event->cm_node);
return;
}
/**
* cm_event_reset
*/
-void cm_event_reset(struct nes_cm_event *event)
+static void cm_event_reset(struct nes_cm_event *event)
{
struct nes_qp *nesqp;
struct iw_cm_id *cm_id;
nes_debug(NES_DBG_CM, "%p - cm_id = %p\n", event->cm_node, cm_id);
nesqp = cm_id->provider_data;
+ if (!nesqp)
+ return;
nesqp->cm_id = NULL;
/* cm_id->provider_data = NULL; */
cm_event.private_data = NULL;
cm_event.private_data_len = 0;
+ cm_id->add_ref(cm_id);
+ ret = cm_id->event_handler(cm_id, &cm_event);
+ atomic_inc(&cm_closes);
+ cm_event.event = IW_CM_EVENT_CLOSE;
+ cm_event.status = IW_CM_EVENT_STATUS_OK;
+ cm_event.provider_data = cm_id->provider_data;
+ cm_event.local_addr = cm_id->local_addr;
+ cm_event.remote_addr = cm_id->remote_addr;
+ cm_event.private_data = NULL;
+ cm_event.private_data_len = 0;
+ nes_debug(NES_DBG_CM, "NODE %p Generating CLOSE\n", event->cm_node);
ret = cm_id->event_handler(cm_id, &cm_event);
+
nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret);
/**
* cm_event_mpa_req
*/
-void cm_event_mpa_req(struct nes_cm_event *event)
+static void cm_event_mpa_req(struct nes_cm_event *event)
{
struct iw_cm_id *cm_id;
struct iw_cm_event cm_event;
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",
- __FUNCTION__, __LINE__, ret);
+ printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n",
+ __func__, __LINE__, ret);
return;
}
* nes_cm_post_event
* post an event to the cm event handler
*/
-int nes_cm_post_event(struct nes_cm_event *event)
+static int nes_cm_post_event(struct nes_cm_event *event)
{
atomic_inc(&event->cm_node->cm_core->events_posted);
add_ref_cm_node(event->cm_node);
event->cm_info.cm_id->add_ref(event->cm_info.cm_id);
INIT_WORK(&event->event_work, nes_cm_event_handler);
- nes_debug(NES_DBG_CM, "queue_work, event=%p\n", event);
+ nes_debug(NES_DBG_CM, "cm_node=%p queue_work, event=%p\n",
+ event->cm_node, event);
queue_work(event->cm_node->cm_core->event_wq, &event->event_work);
*/
static void nes_cm_event_handler(struct work_struct *work)
{
- struct nes_cm_event *event = container_of(work, struct nes_cm_event, event_work);
+ struct nes_cm_event *event = container_of(work, struct nes_cm_event,
+ event_work);
struct nes_cm_core *cm_core;
- if ((!event) || (!event->cm_node) || (!event->cm_node->cm_core)) {
+ if ((!event) || (!event->cm_node) || (!event->cm_node->cm_core))
return;
- }
+
cm_core = event->cm_node->cm_core;
nes_debug(NES_DBG_CM, "event=%p, event->type=%u, events posted=%u\n",
- event, event->type, atomic_read(&cm_core->events_posted));
+ event, event->type, atomic_read(&cm_core->events_posted));
switch (event->type) {
- case NES_CM_EVENT_MPA_REQ:
- cm_event_mpa_req(event);
- nes_debug(NES_DBG_CM, "CM Event: MPA REQUEST\n");
- break;
- case NES_CM_EVENT_RESET:
- nes_debug(NES_DBG_CM, "CM Event: RESET\n");
- cm_event_reset(event);
+ case NES_CM_EVENT_MPA_REQ:
+ cm_event_mpa_req(event);
+ nes_debug(NES_DBG_CM, "cm_node=%p CM Event: MPA REQUEST\n",
+ event->cm_node);
+ break;
+ case NES_CM_EVENT_RESET:
+ nes_debug(NES_DBG_CM, "cm_node = %p CM Event: RESET\n",
+ event->cm_node);
+ cm_event_reset(event);
+ break;
+ case NES_CM_EVENT_CONNECTED:
+ if ((!event->cm_node->cm_id) ||
+ (event->cm_node->state != NES_CM_STATE_TSA))
break;
- case NES_CM_EVENT_CONNECTED:
- if ((!event->cm_node->cm_id) ||
- (event->cm_node->state != NES_CM_STATE_TSA)) {
- break;
- }
- cm_event_connected(event);
- nes_debug(NES_DBG_CM, "CM Event: CONNECTED\n");
- break;
- case NES_CM_EVENT_ABORTED:
- if ((!event->cm_node->cm_id) || (event->cm_node->state == NES_CM_STATE_TSA)) {
- break;
- }
- cm_event_connect_error(event);
- nes_debug(NES_DBG_CM, "CM Event: ABORTED\n");
- break;
- case NES_CM_EVENT_DROPPED_PKT:
- nes_debug(NES_DBG_CM, "CM Event: DROPPED PKT\n");
+ 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;
- default:
- nes_debug(NES_DBG_CM, "CM Event: UNKNOWN EVENT TYPE\n");
+ cm_event_mpa_reject(event);
+ nes_debug(NES_DBG_CM, "CM Event: REJECT\n");
+ break;
+
+ case NES_CM_EVENT_ABORTED:
+ if ((!event->cm_node->cm_id) ||
+ (event->cm_node->state == NES_CM_STATE_TSA))
break;
+ cm_event_connect_error(event);
+ nes_debug(NES_DBG_CM, "CM Event: ABORTED\n");
+ break;
+ case NES_CM_EVENT_DROPPED_PKT:
+ nes_debug(NES_DBG_CM, "CM Event: DROPPED PKT\n");
+ break;
+ default:
+ nes_debug(NES_DBG_CM, "CM Event: UNKNOWN EVENT TYPE\n");
+ break;
}
atomic_dec(&cm_core->events_posted);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff