/*
- * Copyright (c) 2004-2006 Intel Corporation. All rights reserved.
+ * Copyright (c) 2004-2007 Intel Corporation. All rights reserved.
* Copyright (c) 2004 Topspin Corporation. All rights reserved.
* Copyright (c) 2004, 2005 Voltaire Corporation. All rights reserved.
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
- *
- * $Id: cm.c 4311 2005-12-05 18:42:01Z sean.hefty $
*/
#include <linux/completion.h>
#include <linux/dma-mapping.h>
+#include <linux/device.h>
#include <linux/err.h>
#include <linux/idr.h>
#include <linux/interrupt.h>
-#include <linux/pci.h>
#include <linux/random.h>
#include <linux/rbtree.h>
#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
#include <linux/workqueue.h>
+#include <linux/kdev_t.h>
#include <rdma/ib_cache.h>
#include <rdma/ib_cm.h>
struct rb_root remote_sidr_table;
struct idr local_id_table;
__be32 random_id_operand;
+ struct list_head timewait_list;
struct workqueue_struct *wq;
} cm;
+/* Counter indexes ordered by attribute ID */
+enum {
+ CM_REQ_COUNTER,
+ CM_MRA_COUNTER,
+ CM_REJ_COUNTER,
+ CM_REP_COUNTER,
+ CM_RTU_COUNTER,
+ CM_DREQ_COUNTER,
+ CM_DREP_COUNTER,
+ CM_SIDR_REQ_COUNTER,
+ CM_SIDR_REP_COUNTER,
+ CM_LAP_COUNTER,
+ CM_APR_COUNTER,
+ CM_ATTR_COUNT,
+ CM_ATTR_ID_OFFSET = 0x0010,
+};
+
+enum {
+ CM_XMIT,
+ CM_XMIT_RETRIES,
+ CM_RECV,
+ CM_RECV_DUPLICATES,
+ CM_COUNTER_GROUPS
+};
+
+static char const counter_group_names[CM_COUNTER_GROUPS]
+ [sizeof("cm_rx_duplicates")] = {
+ "cm_tx_msgs", "cm_tx_retries",
+ "cm_rx_msgs", "cm_rx_duplicates"
+};
+
+struct cm_counter_group {
+ struct kobject obj;
+ atomic_long_t counter[CM_ATTR_COUNT];
+};
+
+struct cm_counter_attribute {
+ struct attribute attr;
+ int index;
+};
+
+#define CM_COUNTER_ATTR(_name, _index) \
+struct cm_counter_attribute cm_##_name##_counter_attr = { \
+ .attr = { .name = __stringify(_name), .mode = 0444 }, \
+ .index = _index \
+}
+
+static CM_COUNTER_ATTR(req, CM_REQ_COUNTER);
+static CM_COUNTER_ATTR(mra, CM_MRA_COUNTER);
+static CM_COUNTER_ATTR(rej, CM_REJ_COUNTER);
+static CM_COUNTER_ATTR(rep, CM_REP_COUNTER);
+static CM_COUNTER_ATTR(rtu, CM_RTU_COUNTER);
+static CM_COUNTER_ATTR(dreq, CM_DREQ_COUNTER);
+static CM_COUNTER_ATTR(drep, CM_DREP_COUNTER);
+static CM_COUNTER_ATTR(sidr_req, CM_SIDR_REQ_COUNTER);
+static CM_COUNTER_ATTR(sidr_rep, CM_SIDR_REP_COUNTER);
+static CM_COUNTER_ATTR(lap, CM_LAP_COUNTER);
+static CM_COUNTER_ATTR(apr, CM_APR_COUNTER);
+
+static struct attribute *cm_counter_default_attrs[] = {
+ &cm_req_counter_attr.attr,
+ &cm_mra_counter_attr.attr,
+ &cm_rej_counter_attr.attr,
+ &cm_rep_counter_attr.attr,
+ &cm_rtu_counter_attr.attr,
+ &cm_dreq_counter_attr.attr,
+ &cm_drep_counter_attr.attr,
+ &cm_sidr_req_counter_attr.attr,
+ &cm_sidr_rep_counter_attr.attr,
+ &cm_lap_counter_attr.attr,
+ &cm_apr_counter_attr.attr,
+ NULL
+};
+
struct cm_port {
struct cm_device *cm_dev;
struct ib_mad_agent *mad_agent;
+ struct kobject port_obj;
u8 port_num;
+ struct cm_counter_group counter_group[CM_COUNTER_GROUPS];
};
struct cm_device {
struct list_head list;
- struct ib_device *device;
- __be64 ca_guid;
- struct cm_port port[0];
+ struct ib_device *ib_device;
+ struct device *device;
+ u8 ack_delay;
+ struct cm_port *port[0];
};
struct cm_av {
union ib_gid dgid;
struct ib_ah_attr ah_attr;
u16 pkey_index;
- u8 packet_life_time;
+ u8 timeout;
};
struct cm_work {
- struct work_struct work;
+ struct delayed_work work;
struct list_head list;
struct cm_port *port;
struct ib_mad_recv_wc *mad_recv_wc; /* Received MADs */
struct cm_timewait_info {
struct cm_work work; /* Must be first. */
+ struct list_head list;
struct rb_node remote_qp_node;
struct rb_node remote_id_node;
__be64 remote_ca_guid;
__be32 rq_psn;
int timeout_ms;
enum ib_mtu path_mtu;
+ __be16 pkey;
u8 private_data_len;
u8 max_cm_retries;
u8 peer_to_peer;
u8 responder_resources;
u8 initiator_depth;
- u8 local_ack_timeout;
u8 retry_count;
u8 rnr_retry_count;
u8 service_timeout;
+ u8 target_ack_delay;
struct list_head work_list;
atomic_t work_count;
};
-static void cm_work_handler(void *data);
+static void cm_work_handler(struct work_struct *work);
static inline void cm_deref_id(struct cm_id_private *cm_id_priv)
{
if (!private_data || !private_data_len)
return NULL;
- data = kmalloc(private_data_len, GFP_KERNEL);
+ data = kmemdup(private_data, private_data_len, GFP_KERNEL);
if (!data)
return ERR_PTR(-ENOMEM);
- memcpy(data, private_data, private_data_len);
return data;
}
{
av->port = port;
av->pkey_index = wc->pkey_index;
- ib_init_ah_from_wc(port->cm_dev->device, port->port_num, wc,
+ ib_init_ah_from_wc(port->cm_dev->ib_device, port->port_num, wc,
grh, &av->ah_attr);
}
read_lock_irqsave(&cm.device_lock, flags);
list_for_each_entry(cm_dev, &cm.device_list, list) {
- if (!ib_find_cached_gid(cm_dev->device, &path->sgid,
+ if (!ib_find_cached_gid(cm_dev->ib_device, &path->sgid,
&p, NULL)) {
- port = &cm_dev->port[p-1];
+ port = cm_dev->port[p-1];
break;
}
}
if (!port)
return -EINVAL;
- ret = ib_find_cached_pkey(cm_dev->device, port->port_num,
+ ret = ib_find_cached_pkey(cm_dev->ib_device, port->port_num,
be16_to_cpu(path->pkey), &av->pkey_index);
if (ret)
return ret;
av->port = port;
- ib_init_ah_from_path(cm_dev->device, port->port_num, path,
+ ib_init_ah_from_path(cm_dev->ib_device, port->port_num, path,
&av->ah_attr);
- av->packet_life_time = path->packet_life_time;
+ av->timeout = path->packet_life_time + 1;
return 0;
}
do {
spin_lock_irqsave(&cm.lock, flags);
ret = idr_get_new_above(&cm.local_id_table, cm_id_priv,
- next_id++, &id);
+ next_id, &id);
+ if (!ret)
+ next_id = ((unsigned) id + 1) & MAX_ID_MASK;
spin_unlock_irqrestore(&cm.lock, flags);
} while( (ret == -EAGAIN) && idr_pre_get(&cm.local_id_table, GFP_KERNEL) );
- cm_id_priv->id.local_id = (__force __be32) (id ^ cm.random_id_operand);
+ cm_id_priv->id.local_id = (__force __be32)id ^ cm.random_id_operand;
return ret;
}
static void cm_free_id(__be32 local_id)
{
- unsigned long flags;
-
- spin_lock_irqsave(&cm.lock, flags);
+ spin_lock_irq(&cm.lock);
idr_remove(&cm.local_id_table,
(__force int) (local_id ^ cm.random_id_operand));
- spin_unlock_irqrestore(&cm.lock, flags);
+ spin_unlock_irq(&cm.lock);
}
static struct cm_id_private * cm_get_id(__be32 local_id, __be32 remote_id)
static struct cm_id_private * cm_acquire_id(__be32 local_id, __be32 remote_id)
{
struct cm_id_private *cm_id_priv;
- unsigned long flags;
- spin_lock_irqsave(&cm.lock, flags);
+ spin_lock_irq(&cm.lock);
cm_id_priv = cm_get_id(local_id, remote_id);
- spin_unlock_irqrestore(&cm.lock, flags);
+ spin_unlock_irq(&cm.lock);
return cm_id_priv;
}
return memcmp(src, dst_data->data, IB_CM_COMPARE_SIZE);
}
+/*
+ * Trivial helpers to strip endian annotation and compare; the
+ * endianness doesn't actually matter since we just need a stable
+ * order for the RB tree.
+ */
+static int be32_lt(__be32 a, __be32 b)
+{
+ return (__force u32) a < (__force u32) b;
+}
+
+static int be32_gt(__be32 a, __be32 b)
+{
+ return (__force u32) a > (__force u32) b;
+}
+
+static int be64_lt(__be64 a, __be64 b)
+{
+ return (__force u64) a < (__force u64) b;
+}
+
+static int be64_gt(__be64 a, __be64 b)
+{
+ return (__force u64) a > (__force u64) b;
+}
+
static struct cm_id_private * cm_insert_listen(struct cm_id_private *cm_id_priv)
{
struct rb_node **link = &cm.listen_service_table.rb_node;
link = &(*link)->rb_left;
else if (cm_id_priv->id.device > cur_cm_id_priv->id.device)
link = &(*link)->rb_right;
- else if (service_id < cur_cm_id_priv->id.service_id)
+ else if (be64_lt(service_id, cur_cm_id_priv->id.service_id))
link = &(*link)->rb_left;
- else if (service_id > cur_cm_id_priv->id.service_id)
+ else if (be64_gt(service_id, cur_cm_id_priv->id.service_id))
link = &(*link)->rb_right;
else if (data_cmp < 0)
link = &(*link)->rb_left;
node = node->rb_left;
else if (device > cm_id_priv->id.device)
node = node->rb_right;
- else if (service_id < cm_id_priv->id.service_id)
+ else if (be64_lt(service_id, cm_id_priv->id.service_id))
node = node->rb_left;
- else if (service_id > cm_id_priv->id.service_id)
+ else if (be64_gt(service_id, cm_id_priv->id.service_id))
node = node->rb_right;
else if (data_cmp < 0)
node = node->rb_left;
parent = *link;
cur_timewait_info = rb_entry(parent, struct cm_timewait_info,
remote_id_node);
- if (remote_id < cur_timewait_info->work.remote_id)
+ if (be32_lt(remote_id, cur_timewait_info->work.remote_id))
link = &(*link)->rb_left;
- else if (remote_id > cur_timewait_info->work.remote_id)
+ else if (be32_gt(remote_id, cur_timewait_info->work.remote_id))
link = &(*link)->rb_right;
- else if (remote_ca_guid < cur_timewait_info->remote_ca_guid)
+ else if (be64_lt(remote_ca_guid, cur_timewait_info->remote_ca_guid))
link = &(*link)->rb_left;
- else if (remote_ca_guid > cur_timewait_info->remote_ca_guid)
+ else if (be64_gt(remote_ca_guid, cur_timewait_info->remote_ca_guid))
link = &(*link)->rb_right;
else
return cur_timewait_info;
while (node) {
timewait_info = rb_entry(node, struct cm_timewait_info,
remote_id_node);
- if (remote_id < timewait_info->work.remote_id)
+ if (be32_lt(remote_id, timewait_info->work.remote_id))
node = node->rb_left;
- else if (remote_id > timewait_info->work.remote_id)
+ else if (be32_gt(remote_id, timewait_info->work.remote_id))
node = node->rb_right;
- else if (remote_ca_guid < timewait_info->remote_ca_guid)
+ else if (be64_lt(remote_ca_guid, timewait_info->remote_ca_guid))
node = node->rb_left;
- else if (remote_ca_guid > timewait_info->remote_ca_guid)
+ else if (be64_gt(remote_ca_guid, timewait_info->remote_ca_guid))
node = node->rb_right;
else
return timewait_info;
parent = *link;
cur_timewait_info = rb_entry(parent, struct cm_timewait_info,
remote_qp_node);
- if (remote_qpn < cur_timewait_info->remote_qpn)
+ if (be32_lt(remote_qpn, cur_timewait_info->remote_qpn))
link = &(*link)->rb_left;
- else if (remote_qpn > cur_timewait_info->remote_qpn)
+ else if (be32_gt(remote_qpn, cur_timewait_info->remote_qpn))
link = &(*link)->rb_right;
- else if (remote_ca_guid < cur_timewait_info->remote_ca_guid)
+ else if (be64_lt(remote_ca_guid, cur_timewait_info->remote_ca_guid))
link = &(*link)->rb_left;
- else if (remote_ca_guid > cur_timewait_info->remote_ca_guid)
+ else if (be64_gt(remote_ca_guid, cur_timewait_info->remote_ca_guid))
link = &(*link)->rb_right;
else
return cur_timewait_info;
parent = *link;
cur_cm_id_priv = rb_entry(parent, struct cm_id_private,
sidr_id_node);
- if (remote_id < cur_cm_id_priv->id.remote_id)
+ if (be32_lt(remote_id, cur_cm_id_priv->id.remote_id))
link = &(*link)->rb_left;
- else if (remote_id > cur_cm_id_priv->id.remote_id)
+ else if (be32_gt(remote_id, cur_cm_id_priv->id.remote_id))
link = &(*link)->rb_right;
else {
int cmp;
return 1 << max(iba_time - 8, 0);
}
-static void cm_cleanup_timewait(struct cm_timewait_info *timewait_info)
+/*
+ * calculate: 4.096x2^ack_timeout = 4.096x2^ack_delay + 2x4.096x2^life_time
+ * Because of how ack_timeout is stored, adding one doubles the timeout.
+ * To avoid large timeouts, select the max(ack_delay, life_time + 1), and
+ * increment it (round up) only if the other is within 50%.
+ */
+static u8 cm_ack_timeout(u8 ca_ack_delay, u8 packet_life_time)
{
- unsigned long flags;
+ int ack_timeout = packet_life_time + 1;
- if (!timewait_info->inserted_remote_id &&
- !timewait_info->inserted_remote_qp)
- return;
+ if (ack_timeout >= ca_ack_delay)
+ ack_timeout += (ca_ack_delay >= (ack_timeout - 1));
+ else
+ ack_timeout = ca_ack_delay +
+ (ack_timeout >= (ca_ack_delay - 1));
- spin_lock_irqsave(&cm.lock, flags);
+ return min(31, ack_timeout);
+}
+
+static void cm_cleanup_timewait(struct cm_timewait_info *timewait_info)
+{
if (timewait_info->inserted_remote_id) {
rb_erase(&timewait_info->remote_id_node, &cm.remote_id_table);
timewait_info->inserted_remote_id = 0;
rb_erase(&timewait_info->remote_qp_node, &cm.remote_qp_table);
timewait_info->inserted_remote_qp = 0;
}
- spin_unlock_irqrestore(&cm.lock, flags);
}
static struct cm_timewait_info * cm_create_timewait_info(__be32 local_id)
return ERR_PTR(-ENOMEM);
timewait_info->work.local_id = local_id;
- INIT_WORK(&timewait_info->work.work, cm_work_handler,
- &timewait_info->work);
+ INIT_DELAYED_WORK(&timewait_info->work.work, cm_work_handler);
timewait_info->work.cm_event.event = IB_CM_TIMEWAIT_EXIT;
return timewait_info;
}
static void cm_enter_timewait(struct cm_id_private *cm_id_priv)
{
int wait_time;
+ unsigned long flags;
+
+ spin_lock_irqsave(&cm.lock, flags);
+ cm_cleanup_timewait(cm_id_priv->timewait_info);
+ list_add_tail(&cm_id_priv->timewait_info->list, &cm.timewait_list);
+ spin_unlock_irqrestore(&cm.lock, flags);
/*
* The cm_id could be destroyed by the user before we exit timewait.
* timewait before notifying the user that we've exited timewait.
*/
cm_id_priv->id.state = IB_CM_TIMEWAIT;
- wait_time = cm_convert_to_ms(cm_id_priv->local_ack_timeout);
+ wait_time = cm_convert_to_ms(cm_id_priv->av.timeout);
queue_delayed_work(cm.wq, &cm_id_priv->timewait_info->work.work,
msecs_to_jiffies(wait_time));
cm_id_priv->timewait_info = NULL;
static void cm_reset_to_idle(struct cm_id_private *cm_id_priv)
{
+ unsigned long flags;
+
cm_id_priv->id.state = IB_CM_IDLE;
if (cm_id_priv->timewait_info) {
+ spin_lock_irqsave(&cm.lock, flags);
cm_cleanup_timewait(cm_id_priv->timewait_info);
+ spin_unlock_irqrestore(&cm.lock, flags);
kfree(cm_id_priv->timewait_info);
cm_id_priv->timewait_info = NULL;
}
{
struct cm_id_private *cm_id_priv;
struct cm_work *work;
- unsigned long flags;
cm_id_priv = container_of(cm_id, struct cm_id_private, id);
retest:
- spin_lock_irqsave(&cm_id_priv->lock, flags);
+ spin_lock_irq(&cm_id_priv->lock);
switch (cm_id->state) {
case IB_CM_LISTEN:
cm_id->state = IB_CM_IDLE;
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
- spin_lock_irqsave(&cm.lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
+ spin_lock_irq(&cm.lock);
rb_erase(&cm_id_priv->service_node, &cm.listen_service_table);
- spin_unlock_irqrestore(&cm.lock, flags);
+ spin_unlock_irq(&cm.lock);
break;
case IB_CM_SIDR_REQ_SENT:
cm_id->state = IB_CM_IDLE;
ib_cancel_mad(cm_id_priv->av.port->mad_agent, cm_id_priv->msg);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
break;
case IB_CM_SIDR_REQ_RCVD:
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
cm_reject_sidr_req(cm_id_priv, IB_SIDR_REJECT);
break;
case IB_CM_REQ_SENT:
ib_cancel_mad(cm_id_priv->av.port->mad_agent, cm_id_priv->msg);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
ib_send_cm_rej(cm_id, IB_CM_REJ_TIMEOUT,
- &cm_id_priv->av.port->cm_dev->ca_guid,
- sizeof cm_id_priv->av.port->cm_dev->ca_guid,
+ &cm_id_priv->id.device->node_guid,
+ sizeof cm_id_priv->id.device->node_guid,
NULL, 0);
break;
case IB_CM_REQ_RCVD:
if (err == -ENOMEM) {
/* Do not reject to allow future retries. */
cm_reset_to_idle(cm_id_priv);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
} else {
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
ib_send_cm_rej(cm_id, IB_CM_REJ_CONSUMER_DEFINED,
NULL, 0, NULL, 0);
}
case IB_CM_MRA_REQ_SENT:
case IB_CM_REP_RCVD:
case IB_CM_MRA_REP_SENT:
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
ib_send_cm_rej(cm_id, IB_CM_REJ_CONSUMER_DEFINED,
NULL, 0, NULL, 0);
break;
case IB_CM_ESTABLISHED:
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
ib_send_cm_dreq(cm_id, NULL, 0);
goto retest;
case IB_CM_DREQ_SENT:
ib_cancel_mad(cm_id_priv->av.port->mad_agent, cm_id_priv->msg);
cm_enter_timewait(cm_id_priv);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
break;
case IB_CM_DREQ_RCVD:
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
ib_send_cm_drep(cm_id, NULL, 0);
break;
default:
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
break;
}
unsigned long flags;
int ret = 0;
- service_mask = service_mask ? service_mask :
- __constant_cpu_to_be64(~0ULL);
+ service_mask = service_mask ? service_mask : ~cpu_to_be64(0);
service_id &= service_mask;
if ((service_id & IB_SERVICE_ID_AGN_MASK) == IB_CM_ASSIGN_SERVICE_ID &&
(service_id != IB_CM_ASSIGN_SERVICE_ID))
spin_lock_irqsave(&cm.lock, flags);
if (service_id == IB_CM_ASSIGN_SERVICE_ID) {
cm_id->service_id = cpu_to_be64(cm.listen_service_id++);
- cm_id->service_mask = __constant_cpu_to_be64(~0ULL);
+ cm_id->service_mask = ~cpu_to_be64(0);
} else {
cm_id->service_id = service_id;
cm_id->service_mask = service_mask;
struct cm_id_private *cm_id_priv,
struct ib_cm_req_param *param)
{
+ struct ib_sa_path_rec *pri_path = param->primary_path;
+ struct ib_sa_path_rec *alt_path = param->alternate_path;
+
cm_format_mad_hdr(&req_msg->hdr, CM_REQ_ATTR_ID,
cm_form_tid(cm_id_priv, CM_MSG_SEQUENCE_REQ));
req_msg->local_comm_id = cm_id_priv->id.local_id;
req_msg->service_id = param->service_id;
- req_msg->local_ca_guid = cm_id_priv->av.port->cm_dev->ca_guid;
+ req_msg->local_ca_guid = cm_id_priv->id.device->node_guid;
cm_req_set_local_qpn(req_msg, cpu_to_be32(param->qp_num));
cm_req_set_resp_res(req_msg, param->responder_resources);
cm_req_set_init_depth(req_msg, param->initiator_depth);
cm_req_set_max_cm_retries(req_msg, param->max_cm_retries);
cm_req_set_srq(req_msg, param->srq);
- req_msg->primary_local_lid = param->primary_path->slid;
- req_msg->primary_remote_lid = param->primary_path->dlid;
- req_msg->primary_local_gid = param->primary_path->sgid;
- req_msg->primary_remote_gid = param->primary_path->dgid;
- cm_req_set_primary_flow_label(req_msg, param->primary_path->flow_label);
- cm_req_set_primary_packet_rate(req_msg, param->primary_path->rate);
- req_msg->primary_traffic_class = param->primary_path->traffic_class;
- req_msg->primary_hop_limit = param->primary_path->hop_limit;
- cm_req_set_primary_sl(req_msg, param->primary_path->sl);
- cm_req_set_primary_subnet_local(req_msg, 1); /* local only... */
+ if (pri_path->hop_limit <= 1) {
+ req_msg->primary_local_lid = pri_path->slid;
+ req_msg->primary_remote_lid = pri_path->dlid;
+ } else {
+ /* Work-around until there's a way to obtain remote LID info */
+ req_msg->primary_local_lid = IB_LID_PERMISSIVE;
+ req_msg->primary_remote_lid = IB_LID_PERMISSIVE;
+ }
+ req_msg->primary_local_gid = pri_path->sgid;
+ req_msg->primary_remote_gid = pri_path->dgid;
+ cm_req_set_primary_flow_label(req_msg, pri_path->flow_label);
+ cm_req_set_primary_packet_rate(req_msg, pri_path->rate);
+ req_msg->primary_traffic_class = pri_path->traffic_class;
+ req_msg->primary_hop_limit = pri_path->hop_limit;
+ cm_req_set_primary_sl(req_msg, pri_path->sl);
+ cm_req_set_primary_subnet_local(req_msg, (pri_path->hop_limit <= 1));
cm_req_set_primary_local_ack_timeout(req_msg,
- min(31, param->primary_path->packet_life_time + 1));
+ cm_ack_timeout(cm_id_priv->av.port->cm_dev->ack_delay,
+ pri_path->packet_life_time));
- if (param->alternate_path) {
- req_msg->alt_local_lid = param->alternate_path->slid;
- req_msg->alt_remote_lid = param->alternate_path->dlid;
- req_msg->alt_local_gid = param->alternate_path->sgid;
- req_msg->alt_remote_gid = param->alternate_path->dgid;
+ if (alt_path) {
+ if (alt_path->hop_limit <= 1) {
+ req_msg->alt_local_lid = alt_path->slid;
+ req_msg->alt_remote_lid = alt_path->dlid;
+ } else {
+ req_msg->alt_local_lid = IB_LID_PERMISSIVE;
+ req_msg->alt_remote_lid = IB_LID_PERMISSIVE;
+ }
+ req_msg->alt_local_gid = alt_path->sgid;
+ req_msg->alt_remote_gid = alt_path->dgid;
cm_req_set_alt_flow_label(req_msg,
- param->alternate_path->flow_label);
- cm_req_set_alt_packet_rate(req_msg, param->alternate_path->rate);
- req_msg->alt_traffic_class = param->alternate_path->traffic_class;
- req_msg->alt_hop_limit = param->alternate_path->hop_limit;
- cm_req_set_alt_sl(req_msg, param->alternate_path->sl);
- cm_req_set_alt_subnet_local(req_msg, 1); /* local only... */
+ alt_path->flow_label);
+ cm_req_set_alt_packet_rate(req_msg, alt_path->rate);
+ req_msg->alt_traffic_class = alt_path->traffic_class;
+ req_msg->alt_hop_limit = alt_path->hop_limit;
+ cm_req_set_alt_sl(req_msg, alt_path->sl);
+ cm_req_set_alt_subnet_local(req_msg, (alt_path->hop_limit <= 1));
cm_req_set_alt_local_ack_timeout(req_msg,
- min(31, param->alternate_path->packet_life_time + 1));
+ cm_ack_timeout(cm_id_priv->av.port->cm_dev->ack_delay,
+ alt_path->packet_life_time));
}
if (param->private_data && param->private_data_len)
goto error1;
}
cm_id->service_id = param->service_id;
- cm_id->service_mask = __constant_cpu_to_be64(~0ULL);
+ cm_id->service_mask = ~cpu_to_be64(0);
cm_id_priv->timeout_ms = cm_convert_to_ms(
param->primary_path->packet_life_time) * 2 +
cm_convert_to_ms(
cm_id_priv->responder_resources = param->responder_resources;
cm_id_priv->retry_count = param->retry_count;
cm_id_priv->path_mtu = param->primary_path->mtu;
+ cm_id_priv->pkey = param->primary_path->pkey;
cm_id_priv->qp_type = param->qp_type;
ret = cm_alloc_msg(cm_id_priv, &cm_id_priv->msg);
cm_id_priv->local_qpn = cm_req_get_local_qpn(req_msg);
cm_id_priv->rq_psn = cm_req_get_starting_psn(req_msg);
- cm_id_priv->local_ack_timeout =
- cm_req_get_primary_local_ack_timeout(req_msg);
spin_lock_irqsave(&cm_id_priv->lock, flags);
ret = ib_post_send_mad(cm_id_priv->msg, NULL);
static void cm_process_work(struct cm_id_private *cm_id_priv,
struct cm_work *work)
{
- unsigned long flags;
int ret;
/* We will typically only have the current event to report. */
cm_free_work(work);
while (!ret && !atomic_add_negative(-1, &cm_id_priv->work_count)) {
- spin_lock_irqsave(&cm_id_priv->lock, flags);
+ spin_lock_irq(&cm_id_priv->lock);
work = cm_dequeue_work(cm_id_priv);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
BUG_ON(!work);
ret = cm_id_priv->id.cm_handler(&cm_id_priv->id,
&work->cm_event);
struct cm_id_private *cm_id_priv)
{
struct ib_mad_send_buf *msg = NULL;
- unsigned long flags;
int ret;
+ atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+ counter[CM_REQ_COUNTER]);
+
/* Quick state check to discard duplicate REQs. */
if (cm_id_priv->id.state == IB_CM_REQ_RCVD)
return;
if (ret)
return;
- spin_lock_irqsave(&cm_id_priv->lock, flags);
+ spin_lock_irq(&cm_id_priv->lock);
switch (cm_id_priv->id.state) {
case IB_CM_MRA_REQ_SENT:
cm_format_mra((struct cm_mra_msg *) msg->mad, cm_id_priv,
default:
goto unlock;
}
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
ret = ib_post_send_mad(msg, NULL);
if (ret)
goto free;
return;
-unlock: spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+unlock: spin_unlock_irq(&cm_id_priv->lock);
free: cm_free_msg(msg);
}
struct cm_id_private *listen_cm_id_priv, *cur_cm_id_priv;
struct cm_timewait_info *timewait_info;
struct cm_req_msg *req_msg;
- unsigned long flags;
req_msg = (struct cm_req_msg *)work->mad_recv_wc->recv_buf.mad;
- /* Check for duplicate REQ and stale connections. */
- spin_lock_irqsave(&cm.lock, flags);
+ /* Check for possible duplicate REQ. */
+ spin_lock_irq(&cm.lock);
timewait_info = cm_insert_remote_id(cm_id_priv->timewait_info);
- if (!timewait_info)
- timewait_info = cm_insert_remote_qpn(cm_id_priv->timewait_info);
-
if (timewait_info) {
cur_cm_id_priv = cm_get_id(timewait_info->work.local_id,
timewait_info->work.remote_id);
- spin_unlock_irqrestore(&cm.lock, flags);
+ spin_unlock_irq(&cm.lock);
if (cur_cm_id_priv) {
cm_dup_req_handler(work, cur_cm_id_priv);
cm_deref_id(cur_cm_id_priv);
- } else
- cm_issue_rej(work->port, work->mad_recv_wc,
- IB_CM_REJ_STALE_CONN, CM_MSG_RESPONSE_REQ,
- NULL, 0);
- goto error;
+ }
+ return NULL;
+ }
+
+ /* Check for stale connections. */
+ timewait_info = cm_insert_remote_qpn(cm_id_priv->timewait_info);
+ if (timewait_info) {
+ cm_cleanup_timewait(cm_id_priv->timewait_info);
+ spin_unlock_irq(&cm.lock);
+ cm_issue_rej(work->port, work->mad_recv_wc,
+ IB_CM_REJ_STALE_CONN, CM_MSG_RESPONSE_REQ,
+ NULL, 0);
+ return NULL;
}
/* Find matching listen request. */
req_msg->service_id,
req_msg->private_data);
if (!listen_cm_id_priv) {
- spin_unlock_irqrestore(&cm.lock, flags);
+ cm_cleanup_timewait(cm_id_priv->timewait_info);
+ spin_unlock_irq(&cm.lock);
cm_issue_rej(work->port, work->mad_recv_wc,
IB_CM_REJ_INVALID_SERVICE_ID, CM_MSG_RESPONSE_REQ,
NULL, 0);
- goto error;
+ goto out;
}
atomic_inc(&listen_cm_id_priv->refcount);
atomic_inc(&cm_id_priv->refcount);
cm_id_priv->id.state = IB_CM_REQ_RCVD;
atomic_inc(&cm_id_priv->work_count);
- spin_unlock_irqrestore(&cm.lock, flags);
+ spin_unlock_irq(&cm.lock);
+out:
return listen_cm_id_priv;
+}
-error: cm_cleanup_timewait(cm_id_priv->timewait_info);
- return NULL;
+/*
+ * Work-around for inter-subnet connections. If the LIDs are permissive,
+ * we need to override the LID/SL data in the REQ with the LID information
+ * in the work completion.
+ */
+static void cm_process_routed_req(struct cm_req_msg *req_msg, struct ib_wc *wc)
+{
+ if (!cm_req_get_primary_subnet_local(req_msg)) {
+ if (req_msg->primary_local_lid == IB_LID_PERMISSIVE) {
+ req_msg->primary_local_lid = cpu_to_be16(wc->slid);
+ cm_req_set_primary_sl(req_msg, wc->sl);
+ }
+
+ if (req_msg->primary_remote_lid == IB_LID_PERMISSIVE)
+ req_msg->primary_remote_lid = cpu_to_be16(wc->dlid_path_bits);
+ }
+
+ if (!cm_req_get_alt_subnet_local(req_msg)) {
+ if (req_msg->alt_local_lid == IB_LID_PERMISSIVE) {
+ req_msg->alt_local_lid = cpu_to_be16(wc->slid);
+ cm_req_set_alt_sl(req_msg, wc->sl);
+ }
+
+ if (req_msg->alt_remote_lid == IB_LID_PERMISSIVE)
+ req_msg->alt_remote_lid = cpu_to_be16(wc->dlid_path_bits);
+ }
}
static int cm_req_handler(struct cm_work *work)
req_msg = (struct cm_req_msg *)work->mad_recv_wc->recv_buf.mad;
- cm_id = ib_create_cm_id(work->port->cm_dev->device, NULL, NULL);
+ cm_id = ib_create_cm_id(work->port->cm_dev->ib_device, NULL, NULL);
if (IS_ERR(cm_id))
return PTR_ERR(cm_id);
cm_id_priv->id.cm_handler = listen_cm_id_priv->id.cm_handler;
cm_id_priv->id.context = listen_cm_id_priv->id.context;
cm_id_priv->id.service_id = req_msg->service_id;
- cm_id_priv->id.service_mask = __constant_cpu_to_be64(~0ULL);
+ cm_id_priv->id.service_mask = ~cpu_to_be64(0);
+ cm_process_routed_req(req_msg, work->mad_recv_wc->wc);
cm_format_paths_from_req(req_msg, &work->path[0], &work->path[1]);
ret = cm_init_av_by_path(&work->path[0], &cm_id_priv->av);
if (ret) {
- ib_get_cached_gid(work->port->cm_dev->device,
+ ib_get_cached_gid(work->port->cm_dev->ib_device,
work->port->port_num, 0, &work->path[0].sgid);
ib_send_cm_rej(cm_id, IB_CM_REJ_INVALID_GID,
&work->path[0].sgid, sizeof work->path[0].sgid,
cm_id_priv->initiator_depth = cm_req_get_resp_res(req_msg);
cm_id_priv->responder_resources = cm_req_get_init_depth(req_msg);
cm_id_priv->path_mtu = cm_req_get_path_mtu(req_msg);
+ cm_id_priv->pkey = req_msg->pkey;
cm_id_priv->sq_psn = cm_req_get_starting_psn(req_msg);
- cm_id_priv->local_ack_timeout =
- cm_req_get_primary_local_ack_timeout(req_msg);
cm_id_priv->retry_count = cm_req_get_retry_count(req_msg);
cm_id_priv->rnr_retry_count = cm_req_get_rnr_retry_count(req_msg);
cm_id_priv->qp_type = cm_req_get_qp_type(req_msg);
cm_rep_set_starting_psn(rep_msg, cpu_to_be32(param->starting_psn));
rep_msg->resp_resources = param->responder_resources;
rep_msg->initiator_depth = param->initiator_depth;
- cm_rep_set_target_ack_delay(rep_msg, param->target_ack_delay);
+ cm_rep_set_target_ack_delay(rep_msg,
+ cm_id_priv->av.port->cm_dev->ack_delay);
cm_rep_set_failover(rep_msg, param->failover_accepted);
cm_rep_set_flow_ctrl(rep_msg, param->flow_control);
cm_rep_set_rnr_retry_count(rep_msg, param->rnr_retry_count);
cm_rep_set_srq(rep_msg, param->srq);
- rep_msg->local_ca_guid = cm_id_priv->av.port->cm_dev->ca_guid;
+ rep_msg->local_ca_guid = cm_id_priv->id.device->node_guid;
if (param->private_data && param->private_data_len)
memcpy(rep_msg->private_data, param->private_data,
struct cm_id_private *cm_id_priv;
struct cm_rep_msg *rep_msg;
struct ib_mad_send_buf *msg = NULL;
- unsigned long flags;
int ret;
rep_msg = (struct cm_rep_msg *) work->mad_recv_wc->recv_buf.mad;
if (!cm_id_priv)
return;
+ atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+ counter[CM_REP_COUNTER]);
ret = cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg);
if (ret)
goto deref;
- spin_lock_irqsave(&cm_id_priv->lock, flags);
+ spin_lock_irq(&cm_id_priv->lock);
if (cm_id_priv->id.state == IB_CM_ESTABLISHED)
cm_format_rtu((struct cm_rtu_msg *) msg->mad, cm_id_priv,
cm_id_priv->private_data,
cm_id_priv->private_data_len);
else
goto unlock;
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
ret = ib_post_send_mad(msg, NULL);
if (ret)
goto free;
goto deref;
-unlock: spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+unlock: spin_unlock_irq(&cm_id_priv->lock);
free: cm_free_msg(msg);
deref: cm_deref_id(cm_id_priv);
}
{
struct cm_id_private *cm_id_priv;
struct cm_rep_msg *rep_msg;
- unsigned long flags;
int ret;
rep_msg = (struct cm_rep_msg *)work->mad_recv_wc->recv_buf.mad;
cm_format_rep_event(work);
- spin_lock_irqsave(&cm_id_priv->lock, flags);
+ spin_lock_irq(&cm_id_priv->lock);
switch (cm_id_priv->id.state) {
case IB_CM_REQ_SENT:
case IB_CM_MRA_REQ_RCVD:
break;
default:
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
ret = -EINVAL;
goto error;
}
/* Check for duplicate REP. */
if (cm_insert_remote_id(cm_id_priv->timewait_info)) {
spin_unlock(&cm.lock);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
ret = -EINVAL;
goto error;
}
&cm.remote_id_table);
cm_id_priv->timewait_info->inserted_remote_id = 0;
spin_unlock(&cm.lock);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
cm_issue_rej(work->port, work->mad_recv_wc,
IB_CM_REJ_STALE_CONN, CM_MSG_RESPONSE_REP,
NULL, 0);
cm_id_priv->responder_resources = rep_msg->initiator_depth;
cm_id_priv->sq_psn = cm_rep_get_starting_psn(rep_msg);
cm_id_priv->rnr_retry_count = cm_rep_get_rnr_retry_count(rep_msg);
+ cm_id_priv->target_ack_delay = cm_rep_get_target_ack_delay(rep_msg);
+ cm_id_priv->av.timeout =
+ cm_ack_timeout(cm_id_priv->target_ack_delay,
+ cm_id_priv->av.timeout - 1);
+ cm_id_priv->alt_av.timeout =
+ cm_ack_timeout(cm_id_priv->target_ack_delay,
+ cm_id_priv->alt_av.timeout - 1);
/* todo: handle peer_to_peer */
ret = atomic_inc_and_test(&cm_id_priv->work_count);
if (!ret)
list_add_tail(&work->list, &cm_id_priv->work_list);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
if (ret)
cm_process_work(cm_id_priv, work);
static int cm_establish_handler(struct cm_work *work)
{
struct cm_id_private *cm_id_priv;
- unsigned long flags;
int ret;
- /* See comment in ib_cm_establish about lookup. */
+ /* See comment in cm_establish about lookup. */
cm_id_priv = cm_acquire_id(work->local_id, work->remote_id);
if (!cm_id_priv)
return -EINVAL;
- spin_lock_irqsave(&cm_id_priv->lock, flags);
+ spin_lock_irq(&cm_id_priv->lock);
if (cm_id_priv->id.state != IB_CM_ESTABLISHED) {
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
goto out;
}
ret = atomic_inc_and_test(&cm_id_priv->work_count);
if (!ret)
list_add_tail(&work->list, &cm_id_priv->work_list);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
if (ret)
cm_process_work(cm_id_priv, work);
{
struct cm_id_private *cm_id_priv;
struct cm_rtu_msg *rtu_msg;
- unsigned long flags;
int ret;
rtu_msg = (struct cm_rtu_msg *)work->mad_recv_wc->recv_buf.mad;
work->cm_event.private_data = &rtu_msg->private_data;
- spin_lock_irqsave(&cm_id_priv->lock, flags);
+ spin_lock_irq(&cm_id_priv->lock);
if (cm_id_priv->id.state != IB_CM_REP_SENT &&
cm_id_priv->id.state != IB_CM_MRA_REP_RCVD) {
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
+ atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+ counter[CM_RTU_COUNTER]);
goto out;
}
cm_id_priv->id.state = IB_CM_ESTABLISHED;
ret = atomic_inc_and_test(&cm_id_priv->work_count);
if (!ret)
list_add_tail(&work->list, &cm_id_priv->work_list);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
if (ret)
cm_process_work(cm_id_priv, work);
}
EXPORT_SYMBOL(ib_send_cm_drep);
+static int cm_issue_drep(struct cm_port *port,
+ struct ib_mad_recv_wc *mad_recv_wc)
+{
+ struct ib_mad_send_buf *msg = NULL;
+ struct cm_dreq_msg *dreq_msg;
+ struct cm_drep_msg *drep_msg;
+ int ret;
+
+ ret = cm_alloc_response_msg(port, mad_recv_wc, &msg);
+ if (ret)
+ return ret;
+
+ dreq_msg = (struct cm_dreq_msg *) mad_recv_wc->recv_buf.mad;
+ drep_msg = (struct cm_drep_msg *) msg->mad;
+
+ cm_format_mad_hdr(&drep_msg->hdr, CM_DREP_ATTR_ID, dreq_msg->hdr.tid);
+ drep_msg->remote_comm_id = dreq_msg->local_comm_id;
+ drep_msg->local_comm_id = dreq_msg->remote_comm_id;
+
+ ret = ib_post_send_mad(msg, NULL);
+ if (ret)
+ cm_free_msg(msg);
+
+ return ret;
+}
+
static int cm_dreq_handler(struct cm_work *work)
{
struct cm_id_private *cm_id_priv;
struct cm_dreq_msg *dreq_msg;
struct ib_mad_send_buf *msg = NULL;
- unsigned long flags;
int ret;
dreq_msg = (struct cm_dreq_msg *)work->mad_recv_wc->recv_buf.mad;
cm_id_priv = cm_acquire_id(dreq_msg->remote_comm_id,
dreq_msg->local_comm_id);
- if (!cm_id_priv)
+ if (!cm_id_priv) {
+ atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+ counter[CM_DREQ_COUNTER]);
+ cm_issue_drep(work->port, work->mad_recv_wc);
return -EINVAL;
+ }
work->cm_event.private_data = &dreq_msg->private_data;
- spin_lock_irqsave(&cm_id_priv->lock, flags);
+ spin_lock_irq(&cm_id_priv->lock);
if (cm_id_priv->local_qpn != cm_dreq_get_remote_qpn(dreq_msg))
goto unlock;
case IB_CM_MRA_REP_RCVD:
break;
case IB_CM_TIMEWAIT:
+ atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+ counter[CM_DREQ_COUNTER]);
if (cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg))
goto unlock;
cm_format_drep((struct cm_drep_msg *) msg->mad, cm_id_priv,
cm_id_priv->private_data,
cm_id_priv->private_data_len);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
if (ib_post_send_mad(msg, NULL))
cm_free_msg(msg);
goto deref;
+ case IB_CM_DREQ_RCVD:
+ atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+ counter[CM_DREQ_COUNTER]);
+ goto unlock;
default:
goto unlock;
}
ret = atomic_inc_and_test(&cm_id_priv->work_count);
if (!ret)
list_add_tail(&work->list, &cm_id_priv->work_list);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
if (ret)
cm_process_work(cm_id_priv, work);
cm_deref_id(cm_id_priv);
return 0;
-unlock: spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+unlock: spin_unlock_irq(&cm_id_priv->lock);
deref: cm_deref_id(cm_id_priv);
return -EINVAL;
}
{
struct cm_id_private *cm_id_priv;
struct cm_drep_msg *drep_msg;
- unsigned long flags;
int ret;
drep_msg = (struct cm_drep_msg *)work->mad_recv_wc->recv_buf.mad;
work->cm_event.private_data = &drep_msg->private_data;
- spin_lock_irqsave(&cm_id_priv->lock, flags);
+ spin_lock_irq(&cm_id_priv->lock);
if (cm_id_priv->id.state != IB_CM_DREQ_SENT &&
cm_id_priv->id.state != IB_CM_DREQ_RCVD) {
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
goto out;
}
cm_enter_timewait(cm_id_priv);
ret = atomic_inc_and_test(&cm_id_priv->work_count);
if (!ret)
list_add_tail(&work->list, &cm_id_priv->work_list);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
if (ret)
cm_process_work(cm_id_priv, work);
{
struct cm_timewait_info *timewait_info;
struct cm_id_private *cm_id_priv;
- unsigned long flags;
__be32 remote_id;
remote_id = rej_msg->local_comm_id;
if (__be16_to_cpu(rej_msg->reason) == IB_CM_REJ_TIMEOUT) {
- spin_lock_irqsave(&cm.lock, flags);
+ spin_lock_irq(&cm.lock);
timewait_info = cm_find_remote_id( *((__be64 *) rej_msg->ari),
remote_id);
if (!timewait_info) {
- spin_unlock_irqrestore(&cm.lock, flags);
+ spin_unlock_irq(&cm.lock);
return NULL;
}
cm_id_priv = idr_find(&cm.local_id_table, (__force int)
else
cm_id_priv = NULL;
}
- spin_unlock_irqrestore(&cm.lock, flags);
+ spin_unlock_irq(&cm.lock);
} else if (cm_rej_get_msg_rejected(rej_msg) == CM_MSG_RESPONSE_REQ)
cm_id_priv = cm_acquire_id(rej_msg->remote_comm_id, 0);
else
{
struct cm_id_private *cm_id_priv;
struct cm_rej_msg *rej_msg;
- unsigned long flags;
int ret;
rej_msg = (struct cm_rej_msg *)work->mad_recv_wc->recv_buf.mad;
cm_format_rej_event(work);
- spin_lock_irqsave(&cm_id_priv->lock, flags);
+ spin_lock_irq(&cm_id_priv->lock);
switch (cm_id_priv->id.state) {
case IB_CM_REQ_SENT:
case IB_CM_MRA_REQ_RCVD:
cm_enter_timewait(cm_id_priv);
break;
default:
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
ret = -EINVAL;
goto out;
}
ret = atomic_inc_and_test(&cm_id_priv->work_count);
if (!ret)
list_add_tail(&work->list, &cm_id_priv->work_list);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
if (ret)
cm_process_work(cm_id_priv, work);
{
struct cm_id_private *cm_id_priv;
struct ib_mad_send_buf *msg;
+ enum ib_cm_state cm_state;
+ enum ib_cm_lap_state lap_state;
+ enum cm_msg_response msg_response;
void *data;
unsigned long flags;
int ret;
spin_lock_irqsave(&cm_id_priv->lock, flags);
switch(cm_id_priv->id.state) {
case IB_CM_REQ_RCVD:
- ret = cm_alloc_msg(cm_id_priv, &msg);
- if (ret)
- goto error1;
-
- cm_format_mra((struct cm_mra_msg *) msg->mad, cm_id_priv,
- CM_MSG_RESPONSE_REQ, service_timeout,
- private_data, private_data_len);
- ret = ib_post_send_mad(msg, NULL);
- if (ret)
- goto error2;
- cm_id->state = IB_CM_MRA_REQ_SENT;
+ cm_state = IB_CM_MRA_REQ_SENT;
+ lap_state = cm_id->lap_state;
+ msg_response = CM_MSG_RESPONSE_REQ;
break;
case IB_CM_REP_RCVD:
- ret = cm_alloc_msg(cm_id_priv, &msg);
- if (ret)
- goto error1;
-
- cm_format_mra((struct cm_mra_msg *) msg->mad, cm_id_priv,
- CM_MSG_RESPONSE_REP, service_timeout,
- private_data, private_data_len);
- ret = ib_post_send_mad(msg, NULL);
- if (ret)
- goto error2;
- cm_id->state = IB_CM_MRA_REP_SENT;
+ cm_state = IB_CM_MRA_REP_SENT;
+ lap_state = cm_id->lap_state;
+ msg_response = CM_MSG_RESPONSE_REP;
break;
case IB_CM_ESTABLISHED:
+ cm_state = cm_id->state;
+ lap_state = IB_CM_MRA_LAP_SENT;
+ msg_response = CM_MSG_RESPONSE_OTHER;
+ break;
+ default:
+ ret = -EINVAL;
+ goto error1;
+ }
+
+ if (!(service_timeout & IB_CM_MRA_FLAG_DELAY)) {
ret = cm_alloc_msg(cm_id_priv, &msg);
if (ret)
goto error1;
cm_format_mra((struct cm_mra_msg *) msg->mad, cm_id_priv,
- CM_MSG_RESPONSE_OTHER, service_timeout,
+ msg_response, service_timeout,
private_data, private_data_len);
ret = ib_post_send_mad(msg, NULL);
if (ret)
goto error2;
- cm_id->lap_state = IB_CM_MRA_LAP_SENT;
- break;
- default:
- ret = -EINVAL;
- goto error1;
}
+
+ cm_id->state = cm_state;
+ cm_id->lap_state = lap_state;
cm_id_priv->service_timeout = service_timeout;
cm_set_private_data(cm_id_priv, data, private_data_len);
spin_unlock_irqrestore(&cm_id_priv->lock, flags);
{
struct cm_id_private *cm_id_priv;
struct cm_mra_msg *mra_msg;
- unsigned long flags;
int timeout, ret;
mra_msg = (struct cm_mra_msg *)work->mad_recv_wc->recv_buf.mad;
work->cm_event.param.mra_rcvd.service_timeout =
cm_mra_get_service_timeout(mra_msg);
timeout = cm_convert_to_ms(cm_mra_get_service_timeout(mra_msg)) +
- cm_convert_to_ms(cm_id_priv->av.packet_life_time);
+ cm_convert_to_ms(cm_id_priv->av.timeout);
- spin_lock_irqsave(&cm_id_priv->lock, flags);
+ spin_lock_irq(&cm_id_priv->lock);
switch (cm_id_priv->id.state) {
case IB_CM_REQ_SENT:
if (cm_mra_get_msg_mraed(mra_msg) != CM_MSG_RESPONSE_REQ ||
if (cm_mra_get_msg_mraed(mra_msg) != CM_MSG_RESPONSE_OTHER ||
cm_id_priv->id.lap_state != IB_CM_LAP_SENT ||
ib_modify_mad(cm_id_priv->av.port->mad_agent,
- cm_id_priv->msg, timeout))
+ cm_id_priv->msg, timeout)) {
+ if (cm_id_priv->id.lap_state == IB_CM_MRA_LAP_RCVD)
+ atomic_long_inc(&work->port->
+ counter_group[CM_RECV_DUPLICATES].
+ counter[CM_MRA_COUNTER]);
goto out;
+ }
cm_id_priv->id.lap_state = IB_CM_MRA_LAP_RCVD;
break;
+ case IB_CM_MRA_REQ_RCVD:
+ case IB_CM_MRA_REP_RCVD:
+ atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+ counter[CM_MRA_COUNTER]);
+ /* fall through */
default:
goto out;
}
ret = atomic_inc_and_test(&cm_id_priv->work_count);
if (!ret)
list_add_tail(&work->list, &cm_id_priv->work_list);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
if (ret)
cm_process_work(cm_id_priv, work);
cm_deref_id(cm_id_priv);
return 0;
out:
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
cm_deref_id(cm_id_priv);
return -EINVAL;
}
cm_lap_set_sl(lap_msg, alternate_path->sl);
cm_lap_set_subnet_local(lap_msg, 1); /* local only... */
cm_lap_set_local_ack_timeout(lap_msg,
- min(31, alternate_path->packet_life_time + 1));
+ cm_ack_timeout(cm_id_priv->av.port->cm_dev->ack_delay,
+ alternate_path->packet_life_time));
if (private_data && private_data_len)
memcpy(lap_msg->private_data, private_data, private_data_len);
cm_id_priv = container_of(cm_id, struct cm_id_private, id);
spin_lock_irqsave(&cm_id_priv->lock, flags);
if (cm_id->state != IB_CM_ESTABLISHED ||
- cm_id->lap_state != IB_CM_LAP_IDLE) {
+ (cm_id->lap_state != IB_CM_LAP_UNINIT &&
+ cm_id->lap_state != IB_CM_LAP_IDLE)) {
ret = -EINVAL;
goto out;
}
+ ret = cm_init_av_by_path(alternate_path, &cm_id_priv->alt_av);
+ if (ret)
+ goto out;
+ cm_id_priv->alt_av.timeout =
+ cm_ack_timeout(cm_id_priv->target_ack_delay,
+ cm_id_priv->alt_av.timeout - 1);
+
ret = cm_alloc_msg(cm_id_priv, &msg);
if (ret)
goto out;
}
EXPORT_SYMBOL(ib_send_cm_lap);
-static void cm_format_path_from_lap(struct ib_sa_path_rec *path,
+static void cm_format_path_from_lap(struct cm_id_private *cm_id_priv,
+ struct ib_sa_path_rec *path,
struct cm_lap_msg *lap_msg)
{
memset(path, 0, sizeof *path);
path->hop_limit = lap_msg->alt_hop_limit;
path->traffic_class = cm_lap_get_traffic_class(lap_msg);
path->reversible = 1;
- /* pkey is same as in REQ */
+ path->pkey = cm_id_priv->pkey;
path->sl = cm_lap_get_sl(lap_msg);
path->mtu_selector = IB_SA_EQ;
- /* mtu is same as in REQ */
+ path->mtu = cm_id_priv->path_mtu;
path->rate_selector = IB_SA_EQ;
path->rate = cm_lap_get_packet_rate(lap_msg);
path->packet_life_time_selector = IB_SA_EQ;
struct cm_lap_msg *lap_msg;
struct ib_cm_lap_event_param *param;
struct ib_mad_send_buf *msg = NULL;
- unsigned long flags;
int ret;
/* todo: verify LAP request and send reject APR if invalid. */
param = &work->cm_event.param.lap_rcvd;
param->alternate_path = &work->path[0];
- cm_format_path_from_lap(param->alternate_path, lap_msg);
+ cm_format_path_from_lap(cm_id_priv, param->alternate_path, lap_msg);
work->cm_event.private_data = &lap_msg->private_data;
- spin_lock_irqsave(&cm_id_priv->lock, flags);
+ spin_lock_irq(&cm_id_priv->lock);
if (cm_id_priv->id.state != IB_CM_ESTABLISHED)
goto unlock;
switch (cm_id_priv->id.lap_state) {
+ case IB_CM_LAP_UNINIT:
case IB_CM_LAP_IDLE:
break;
case IB_CM_MRA_LAP_SENT:
+ atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+ counter[CM_LAP_COUNTER]);
if (cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg))
goto unlock;
cm_id_priv->service_timeout,
cm_id_priv->private_data,
cm_id_priv->private_data_len);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
if (ib_post_send_mad(msg, NULL))
cm_free_msg(msg);
goto deref;
+ case IB_CM_LAP_RCVD:
+ atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+ counter[CM_LAP_COUNTER]);
+ goto unlock;
default:
goto unlock;
}
cm_id_priv->id.lap_state = IB_CM_LAP_RCVD;
cm_id_priv->tid = lap_msg->hdr.tid;
+ cm_init_av_for_response(work->port, work->mad_recv_wc->wc,
+ work->mad_recv_wc->recv_buf.grh,
+ &cm_id_priv->av);
+ cm_init_av_by_path(param->alternate_path, &cm_id_priv->alt_av);
ret = atomic_inc_and_test(&cm_id_priv->work_count);
if (!ret)
list_add_tail(&work->list, &cm_id_priv->work_list);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
if (ret)
cm_process_work(cm_id_priv, work);
cm_deref_id(cm_id_priv);
return 0;
-unlock: spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+unlock: spin_unlock_irq(&cm_id_priv->lock);
deref: cm_deref_id(cm_id_priv);
return -EINVAL;
}
{
struct cm_id_private *cm_id_priv;
struct cm_apr_msg *apr_msg;
- unsigned long flags;
int ret;
apr_msg = (struct cm_apr_msg *)work->mad_recv_wc->recv_buf.mad;
work->cm_event.param.apr_rcvd.info_len = apr_msg->info_length;
work->cm_event.private_data = &apr_msg->private_data;
- spin_lock_irqsave(&cm_id_priv->lock, flags);
+ spin_lock_irq(&cm_id_priv->lock);
if (cm_id_priv->id.state != IB_CM_ESTABLISHED ||
(cm_id_priv->id.lap_state != IB_CM_LAP_SENT &&
cm_id_priv->id.lap_state != IB_CM_MRA_LAP_RCVD)) {
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
goto out;
}
cm_id_priv->id.lap_state = IB_CM_LAP_IDLE;
ret = atomic_inc_and_test(&cm_id_priv->work_count);
if (!ret)
list_add_tail(&work->list, &cm_id_priv->work_list);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
if (ret)
cm_process_work(cm_id_priv, work);
{
struct cm_timewait_info *timewait_info;
struct cm_id_private *cm_id_priv;
- unsigned long flags;
int ret;
timewait_info = (struct cm_timewait_info *)work;
- cm_cleanup_timewait(timewait_info);
+ spin_lock_irq(&cm.lock);
+ list_del(&timewait_info->list);
+ spin_unlock_irq(&cm.lock);
cm_id_priv = cm_acquire_id(timewait_info->work.local_id,
timewait_info->work.remote_id);
if (!cm_id_priv)
return -EINVAL;
- spin_lock_irqsave(&cm_id_priv->lock, flags);
+ spin_lock_irq(&cm_id_priv->lock);
if (cm_id_priv->id.state != IB_CM_TIMEWAIT ||
cm_id_priv->remote_qpn != timewait_info->remote_qpn) {
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
goto out;
}
cm_id_priv->id.state = IB_CM_IDLE;
ret = atomic_inc_and_test(&cm_id_priv->work_count);
if (!ret)
list_add_tail(&work->list, &cm_id_priv->work_list);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
if (ret)
cm_process_work(cm_id_priv, work);
cm_format_mad_hdr(&sidr_req_msg->hdr, CM_SIDR_REQ_ATTR_ID,
cm_form_tid(cm_id_priv, CM_MSG_SEQUENCE_SIDR));
sidr_req_msg->request_id = cm_id_priv->id.local_id;
- sidr_req_msg->pkey = cpu_to_be16(param->path->pkey);
+ sidr_req_msg->pkey = param->path->pkey;
sidr_req_msg->service_id = param->service_id;
if (param->private_data && param->private_data_len)
goto out;
cm_id->service_id = param->service_id;
- cm_id->service_mask = __constant_cpu_to_be64(~0ULL);
+ cm_id->service_mask = ~cpu_to_be64(0);
cm_id_priv->timeout_ms = param->timeout_ms;
cm_id_priv->max_cm_retries = param->max_cm_retries;
ret = cm_alloc_msg(cm_id_priv, &msg);
struct cm_id_private *cm_id_priv, *cur_cm_id_priv;
struct cm_sidr_req_msg *sidr_req_msg;
struct ib_wc *wc;
- unsigned long flags;
- cm_id = ib_create_cm_id(work->port->cm_dev->device, NULL, NULL);
+ cm_id = ib_create_cm_id(work->port->cm_dev->ib_device, NULL, NULL);
if (IS_ERR(cm_id))
return PTR_ERR(cm_id);
cm_id_priv = container_of(cm_id, struct cm_id_private, id);
work->mad_recv_wc->recv_buf.grh,
&cm_id_priv->av);
cm_id_priv->id.remote_id = sidr_req_msg->request_id;
- cm_id_priv->id.state = IB_CM_SIDR_REQ_RCVD;
cm_id_priv->tid = sidr_req_msg->hdr.tid;
atomic_inc(&cm_id_priv->work_count);
- spin_lock_irqsave(&cm.lock, flags);
+ spin_lock_irq(&cm.lock);
cur_cm_id_priv = cm_insert_remote_sidr(cm_id_priv);
if (cur_cm_id_priv) {
- spin_unlock_irqrestore(&cm.lock, flags);
+ spin_unlock_irq(&cm.lock);
+ atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+ counter[CM_SIDR_REQ_COUNTER]);
goto out; /* Duplicate message. */
}
+ cm_id_priv->id.state = IB_CM_SIDR_REQ_RCVD;
cur_cm_id_priv = cm_find_listen(cm_id->device,
sidr_req_msg->service_id,
sidr_req_msg->private_data);
if (!cur_cm_id_priv) {
- rb_erase(&cm_id_priv->sidr_id_node, &cm.remote_sidr_table);
- spin_unlock_irqrestore(&cm.lock, flags);
- /* todo: reply with no match */
+ spin_unlock_irq(&cm.lock);
+ cm_reject_sidr_req(cm_id_priv, IB_SIDR_UNSUPPORTED);
goto out; /* No match. */
}
atomic_inc(&cur_cm_id_priv->refcount);
- spin_unlock_irqrestore(&cm.lock, flags);
+ spin_unlock_irq(&cm.lock);
cm_id_priv->id.cm_handler = cur_cm_id_priv->id.cm_handler;
cm_id_priv->id.context = cur_cm_id_priv->id.context;
cm_id_priv->id.service_id = sidr_req_msg->service_id;
- cm_id_priv->id.service_mask = __constant_cpu_to_be64(~0ULL);
+ cm_id_priv->id.service_mask = ~cpu_to_be64(0);
cm_format_sidr_req_event(work, &cur_cm_id_priv->id);
cm_process_work(cm_id_priv, work);
{
struct cm_sidr_rep_msg *sidr_rep_msg;
struct cm_id_private *cm_id_priv;
- unsigned long flags;
sidr_rep_msg = (struct cm_sidr_rep_msg *)
work->mad_recv_wc->recv_buf.mad;
if (!cm_id_priv)
return -EINVAL; /* Unmatched reply. */
- spin_lock_irqsave(&cm_id_priv->lock, flags);
+ spin_lock_irq(&cm_id_priv->lock);
if (cm_id_priv->id.state != IB_CM_SIDR_REQ_SENT) {
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
goto out;
}
cm_id_priv->id.state = IB_CM_IDLE;
ib_cancel_mad(cm_id_priv->av.port->mad_agent, cm_id_priv->msg);
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
cm_format_sidr_rep_event(work);
cm_process_work(cm_id_priv, work);
struct cm_id_private *cm_id_priv;
struct ib_cm_event cm_event;
enum ib_cm_state state;
- unsigned long flags;
int ret;
memset(&cm_event, 0, sizeof cm_event);
cm_id_priv = msg->context[0];
/* Discard old sends or ones without a response. */
- spin_lock_irqsave(&cm_id_priv->lock, flags);
+ spin_lock_irq(&cm_id_priv->lock);
state = (enum ib_cm_state) (unsigned long) msg->context[1];
if (msg != cm_id_priv->msg || state != cm_id_priv->id.state)
goto discard;
default:
goto discard;
}
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
cm_event.param.send_status = wc_status;
/* No other events can occur on the cm_id at this point. */
ib_destroy_cm_id(&cm_id_priv->id);
return;
discard:
- spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ spin_unlock_irq(&cm_id_priv->lock);
cm_free_msg(msg);
}
struct ib_mad_send_wc *mad_send_wc)
{
struct ib_mad_send_buf *msg = mad_send_wc->send_buf;
+ struct cm_port *port;
+ u16 attr_index;
+
+ port = mad_agent->context;
+ attr_index = be16_to_cpu(((struct ib_mad_hdr *)
+ msg->mad)->attr_id) - CM_ATTR_ID_OFFSET;
+
+ /*
+ * If the send was in response to a received message (context[0] is not
+ * set to a cm_id), and is not a REJ, then it is a send that was
+ * manually retried.
+ */
+ if (!msg->context[0] && (attr_index != CM_REJ_COUNTER))
+ msg->retries = 1;
+
+ atomic_long_add(1 + msg->retries,
+ &port->counter_group[CM_XMIT].counter[attr_index]);
+ if (msg->retries)
+ atomic_long_add(msg->retries,
+ &port->counter_group[CM_XMIT_RETRIES].
+ counter[attr_index]);
switch (mad_send_wc->status) {
case IB_WC_SUCCESS:
}
}
-static void cm_work_handler(void *data)
+static void cm_work_handler(struct work_struct *_work)
{
- struct cm_work *work = data;
+ struct cm_work *work = container_of(_work, struct cm_work, work.work);
int ret;
switch (work->cm_event.event) {
cm_free_work(work);
}
-int ib_cm_establish(struct ib_cm_id *cm_id)
+static int cm_establish(struct ib_cm_id *cm_id)
{
struct cm_id_private *cm_id_priv;
struct cm_work *work;
* we need to find the cm_id once we're in the context of the
* worker thread, rather than holding a reference on it.
*/
- INIT_WORK(&work->work, cm_work_handler, work);
+ INIT_DELAYED_WORK(&work->work, cm_work_handler);
work->local_id = cm_id->local_id;
work->remote_id = cm_id->remote_id;
work->mad_recv_wc = NULL;
work->cm_event.event = IB_CM_USER_ESTABLISHED;
- queue_work(cm.wq, &work->work);
+ queue_delayed_work(cm.wq, &work->work, 0);
out:
return ret;
}
-EXPORT_SYMBOL(ib_cm_establish);
+
+static int cm_migrate(struct ib_cm_id *cm_id)
+{
+ struct cm_id_private *cm_id_priv;
+ unsigned long flags;
+ int ret = 0;
+
+ cm_id_priv = container_of(cm_id, struct cm_id_private, id);
+ spin_lock_irqsave(&cm_id_priv->lock, flags);
+ if (cm_id->state == IB_CM_ESTABLISHED &&
+ (cm_id->lap_state == IB_CM_LAP_UNINIT ||
+ cm_id->lap_state == IB_CM_LAP_IDLE)) {
+ cm_id->lap_state = IB_CM_LAP_IDLE;
+ cm_id_priv->av = cm_id_priv->alt_av;
+ } else
+ ret = -EINVAL;
+ spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+
+ return ret;
+}
+
+int ib_cm_notify(struct ib_cm_id *cm_id, enum ib_event_type event)
+{
+ int ret;
+
+ switch (event) {
+ case IB_EVENT_COMM_EST:
+ ret = cm_establish(cm_id);
+ break;
+ case IB_EVENT_PATH_MIG:
+ ret = cm_migrate(cm_id);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+ return ret;
+}
+EXPORT_SYMBOL(ib_cm_notify);
static void cm_recv_handler(struct ib_mad_agent *mad_agent,
struct ib_mad_recv_wc *mad_recv_wc)
{
+ struct cm_port *port = mad_agent->context;
struct cm_work *work;
enum ib_cm_event_type event;
+ u16 attr_id;
int paths = 0;
switch (mad_recv_wc->recv_buf.mad->mad_hdr.attr_id) {
return;
}
+ attr_id = be16_to_cpu(mad_recv_wc->recv_buf.mad->mad_hdr.attr_id);
+ atomic_long_inc(&port->counter_group[CM_RECV].
+ counter[attr_id - CM_ATTR_ID_OFFSET]);
+
work = kmalloc(sizeof *work + sizeof(struct ib_sa_path_rec) * paths,
GFP_KERNEL);
if (!work) {
return;
}
- INIT_WORK(&work->work, cm_work_handler, work);
+ INIT_DELAYED_WORK(&work->work, cm_work_handler);
work->cm_event.event = event;
work->mad_recv_wc = mad_recv_wc;
- work->port = (struct cm_port *)mad_agent->context;
- queue_work(cm.wq, &work->work);
+ work->port = port;
+ queue_delayed_work(cm.wq, &work->work, 0);
}
static int cm_init_qp_init_attr(struct cm_id_private *cm_id_priv,
case IB_CM_ESTABLISHED:
*qp_attr_mask = IB_QP_STATE | IB_QP_ACCESS_FLAGS |
IB_QP_PKEY_INDEX | IB_QP_PORT;
- qp_attr->qp_access_flags = IB_ACCESS_LOCAL_WRITE |
- IB_ACCESS_REMOTE_WRITE;
+ qp_attr->qp_access_flags = IB_ACCESS_REMOTE_WRITE;
if (cm_id_priv->responder_resources)
qp_attr->qp_access_flags |= IB_ACCESS_REMOTE_READ |
IB_ACCESS_REMOTE_ATOMIC;
if (cm_id_priv->alt_av.ah_attr.dlid) {
*qp_attr_mask |= IB_QP_ALT_PATH;
qp_attr->alt_port_num = cm_id_priv->alt_av.port->port_num;
+ qp_attr->alt_pkey_index = cm_id_priv->alt_av.pkey_index;
+ qp_attr->alt_timeout = cm_id_priv->alt_av.timeout;
qp_attr->alt_ah_attr = cm_id_priv->alt_av.ah_attr;
}
ret = 0;
spin_lock_irqsave(&cm_id_priv->lock, flags);
switch (cm_id_priv->id.state) {
+ /* Allow transition to RTS before sending REP */
+ case IB_CM_REQ_RCVD:
+ case IB_CM_MRA_REQ_SENT:
+
case IB_CM_REP_RCVD:
case IB_CM_MRA_REP_SENT:
case IB_CM_REP_SENT:
case IB_CM_MRA_REP_RCVD:
case IB_CM_ESTABLISHED:
- *qp_attr_mask = IB_QP_STATE | IB_QP_SQ_PSN;
- qp_attr->sq_psn = be32_to_cpu(cm_id_priv->sq_psn);
- if (cm_id_priv->qp_type == IB_QPT_RC) {
- *qp_attr_mask |= IB_QP_TIMEOUT | IB_QP_RETRY_CNT |
- IB_QP_RNR_RETRY |
- IB_QP_MAX_QP_RD_ATOMIC;
- qp_attr->timeout = cm_id_priv->local_ack_timeout;
- qp_attr->retry_cnt = cm_id_priv->retry_count;
- qp_attr->rnr_retry = cm_id_priv->rnr_retry_count;
- qp_attr->max_rd_atomic = cm_id_priv->initiator_depth;
- }
- if (cm_id_priv->alt_av.ah_attr.dlid) {
- *qp_attr_mask |= IB_QP_PATH_MIG_STATE;
+ if (cm_id_priv->id.lap_state == IB_CM_LAP_UNINIT) {
+ *qp_attr_mask = IB_QP_STATE | IB_QP_SQ_PSN;
+ qp_attr->sq_psn = be32_to_cpu(cm_id_priv->sq_psn);
+ if (cm_id_priv->qp_type == IB_QPT_RC) {
+ *qp_attr_mask |= IB_QP_TIMEOUT | IB_QP_RETRY_CNT |
+ IB_QP_RNR_RETRY |
+ IB_QP_MAX_QP_RD_ATOMIC;
+ qp_attr->timeout = cm_id_priv->av.timeout;
+ qp_attr->retry_cnt = cm_id_priv->retry_count;
+ qp_attr->rnr_retry = cm_id_priv->rnr_retry_count;
+ qp_attr->max_rd_atomic =
+ cm_id_priv->initiator_depth;
+ }
+ if (cm_id_priv->alt_av.ah_attr.dlid) {
+ *qp_attr_mask |= IB_QP_PATH_MIG_STATE;
+ qp_attr->path_mig_state = IB_MIG_REARM;
+ }
+ } else {
+ *qp_attr_mask = IB_QP_ALT_PATH | IB_QP_PATH_MIG_STATE;
+ qp_attr->alt_port_num = cm_id_priv->alt_av.port->port_num;
+ qp_attr->alt_pkey_index = cm_id_priv->alt_av.pkey_index;
+ qp_attr->alt_timeout = cm_id_priv->alt_av.timeout;
+ qp_attr->alt_ah_attr = cm_id_priv->alt_av.ah_attr;
qp_attr->path_mig_state = IB_MIG_REARM;
}
ret = 0;
}
EXPORT_SYMBOL(ib_cm_init_qp_attr);
-static void cm_add_one(struct ib_device *device)
+static void cm_get_ack_delay(struct cm_device *cm_dev)
+{
+ struct ib_device_attr attr;
+
+ if (ib_query_device(cm_dev->ib_device, &attr))
+ cm_dev->ack_delay = 0; /* acks will rely on packet life time */
+ else
+ cm_dev->ack_delay = attr.local_ca_ack_delay;
+}
+
+static ssize_t cm_show_counter(struct kobject *obj, struct attribute *attr,
+ char *buf)
+{
+ struct cm_counter_group *group;
+ struct cm_counter_attribute *cm_attr;
+
+ group = container_of(obj, struct cm_counter_group, obj);
+ cm_attr = container_of(attr, struct cm_counter_attribute, attr);
+
+ return sprintf(buf, "%ld\n",
+ atomic_long_read(&group->counter[cm_attr->index]));
+}
+
+static const struct sysfs_ops cm_counter_ops = {
+ .show = cm_show_counter
+};
+
+static struct kobj_type cm_counter_obj_type = {
+ .sysfs_ops = &cm_counter_ops,
+ .default_attrs = cm_counter_default_attrs
+};
+
+static void cm_release_port_obj(struct kobject *obj)
+{
+ struct cm_port *cm_port;
+
+ cm_port = container_of(obj, struct cm_port, port_obj);
+ kfree(cm_port);
+}
+
+static struct kobj_type cm_port_obj_type = {
+ .release = cm_release_port_obj
+};
+
+struct class cm_class = {
+ .name = "infiniband_cm",
+};
+EXPORT_SYMBOL(cm_class);
+
+static int cm_create_port_fs(struct cm_port *port)
+{
+ int i, ret;
+
+ ret = kobject_init_and_add(&port->port_obj, &cm_port_obj_type,
+ &port->cm_dev->device->kobj,
+ "%d", port->port_num);
+ if (ret) {
+ kfree(port);
+ return ret;
+ }
+
+ for (i = 0; i < CM_COUNTER_GROUPS; i++) {
+ ret = kobject_init_and_add(&port->counter_group[i].obj,
+ &cm_counter_obj_type,
+ &port->port_obj,
+ "%s", counter_group_names[i]);
+ if (ret)
+ goto error;
+ }
+
+ return 0;
+
+error:
+ while (i--)
+ kobject_put(&port->counter_group[i].obj);
+ kobject_put(&port->port_obj);
+ return ret;
+
+}
+
+static void cm_remove_port_fs(struct cm_port *port)
+{
+ int i;
+
+ for (i = 0; i < CM_COUNTER_GROUPS; i++)
+ kobject_put(&port->counter_group[i].obj);
+
+ kobject_put(&port->port_obj);
+}
+
+static void cm_add_one(struct ib_device *ib_device)
{
struct cm_device *cm_dev;
struct cm_port *port;
int ret;
u8 i;
- if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
+ if (rdma_node_get_transport(ib_device->node_type) != RDMA_TRANSPORT_IB)
return;
- cm_dev = kmalloc(sizeof(*cm_dev) + sizeof(*port) *
- device->phys_port_cnt, GFP_KERNEL);
+ cm_dev = kzalloc(sizeof(*cm_dev) + sizeof(*port) *
+ ib_device->phys_port_cnt, GFP_KERNEL);
if (!cm_dev)
return;
- cm_dev->device = device;
- cm_dev->ca_guid = device->node_guid;
+ cm_dev->ib_device = ib_device;
+ cm_get_ack_delay(cm_dev);
+
+ cm_dev->device = device_create(&cm_class, &ib_device->dev,
+ MKDEV(0, 0), NULL,
+ "%s", ib_device->name);
+ if (!cm_dev->device) {
+ kfree(cm_dev);
+ return;
+ }
set_bit(IB_MGMT_METHOD_SEND, reg_req.method_mask);
- for (i = 1; i <= device->phys_port_cnt; i++) {
- port = &cm_dev->port[i-1];
+ for (i = 1; i <= ib_device->phys_port_cnt; i++) {
+ port = kzalloc(sizeof *port, GFP_KERNEL);
+ if (!port)
+ goto error1;
+
+ cm_dev->port[i-1] = port;
port->cm_dev = cm_dev;
port->port_num = i;
- port->mad_agent = ib_register_mad_agent(device, i,
+
+ ret = cm_create_port_fs(port);
+ if (ret)
+ goto error1;
+
+ port->mad_agent = ib_register_mad_agent(ib_device, i,
IB_QPT_GSI,
®_req,
0,
cm_recv_handler,
port);
if (IS_ERR(port->mad_agent))
- goto error1;
+ goto error2;
- ret = ib_modify_port(device, i, 0, &port_modify);
+ ret = ib_modify_port(ib_device, i, 0, &port_modify);
if (ret)
- goto error2;
+ goto error3;
}
- ib_set_client_data(device, &cm_client, cm_dev);
+ ib_set_client_data(ib_device, &cm_client, cm_dev);
write_lock_irqsave(&cm.device_lock, flags);
list_add_tail(&cm_dev->list, &cm.device_list);
write_unlock_irqrestore(&cm.device_lock, flags);
return;
-error2:
+error3:
ib_unregister_mad_agent(port->mad_agent);
+error2:
+ cm_remove_port_fs(port);
error1:
port_modify.set_port_cap_mask = 0;
port_modify.clr_port_cap_mask = IB_PORT_CM_SUP;
while (--i) {
- port = &cm_dev->port[i-1];
- ib_modify_port(device, port->port_num, 0, &port_modify);
+ port = cm_dev->port[i-1];
+ ib_modify_port(ib_device, port->port_num, 0, &port_modify);
ib_unregister_mad_agent(port->mad_agent);
+ cm_remove_port_fs(port);
}
+ device_unregister(cm_dev->device);
kfree(cm_dev);
}
-static void cm_remove_one(struct ib_device *device)
+static void cm_remove_one(struct ib_device *ib_device)
{
struct cm_device *cm_dev;
struct cm_port *port;
unsigned long flags;
int i;
- cm_dev = ib_get_client_data(device, &cm_client);
+ cm_dev = ib_get_client_data(ib_device, &cm_client);
if (!cm_dev)
return;
list_del(&cm_dev->list);
write_unlock_irqrestore(&cm.device_lock, flags);
- for (i = 1; i <= device->phys_port_cnt; i++) {
- port = &cm_dev->port[i-1];
- ib_modify_port(device, port->port_num, 0, &port_modify);
+ for (i = 1; i <= ib_device->phys_port_cnt; i++) {
+ port = cm_dev->port[i-1];
+ ib_modify_port(ib_device, port->port_num, 0, &port_modify);
ib_unregister_mad_agent(port->mad_agent);
+ flush_workqueue(cm.wq);
+ cm_remove_port_fs(port);
}
+ device_unregister(cm_dev->device);
kfree(cm_dev);
}
rwlock_init(&cm.device_lock);
spin_lock_init(&cm.lock);
cm.listen_service_table = RB_ROOT;
- cm.listen_service_id = __constant_be64_to_cpu(IB_CM_ASSIGN_SERVICE_ID);
+ cm.listen_service_id = be64_to_cpu(IB_CM_ASSIGN_SERVICE_ID);
cm.remote_id_table = RB_ROOT;
cm.remote_qp_table = RB_ROOT;
cm.remote_sidr_table = RB_ROOT;
idr_init(&cm.local_id_table);
get_random_bytes(&cm.random_id_operand, sizeof cm.random_id_operand);
idr_pre_get(&cm.local_id_table, GFP_KERNEL);
+ INIT_LIST_HEAD(&cm.timewait_list);
- cm.wq = create_workqueue("ib_cm");
- if (!cm.wq)
+ ret = class_register(&cm_class);
+ if (ret)
return -ENOMEM;
+ cm.wq = create_workqueue("ib_cm");
+ if (!cm.wq) {
+ ret = -ENOMEM;
+ goto error1;
+ }
+
ret = ib_register_client(&cm_client);
if (ret)
- goto error;
+ goto error2;
return 0;
-error:
+error2:
destroy_workqueue(cm.wq);
+error1:
+ class_unregister(&cm_class);
return ret;
}
static void __exit ib_cm_cleanup(void)
{
- destroy_workqueue(cm.wq);
+ struct cm_timewait_info *timewait_info, *tmp;
+
+ spin_lock_irq(&cm.lock);
+ list_for_each_entry(timewait_info, &cm.timewait_list, list)
+ cancel_delayed_work(&timewait_info->work.work);
+ spin_unlock_irq(&cm.lock);
+
ib_unregister_client(&cm_client);
+ destroy_workqueue(cm.wq);
+
+ list_for_each_entry_safe(timewait_info, tmp, &cm.timewait_list, list) {
+ list_del(&timewait_info->list);
+ kfree(timewait_info);
+ }
+
+ class_unregister(&cm_class);
idr_destroy(&cm.local_id_table);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff