/*
- * Copyright (c) 2004, 2005 Intel Corporation. All rights reserved.
+ * Copyright (c) 2004-2006 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.
#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/workqueue.h>
struct rb_root remote_id_table;
struct rb_root remote_sidr_table;
struct idr local_id_table;
+ __be32 random_id_operand;
struct workqueue_struct *wq;
} cm;
if (IS_ERR(ah))
return PTR_ERR(ah);
- m = ib_create_send_mad(mad_agent, cm_id_priv->id.remote_cm_qpn,
+ m = ib_create_send_mad(mad_agent, cm_id_priv->id.remote_cm_qpn,
cm_id_priv->av.pkey_index,
0, IB_MGMT_MAD_HDR, IB_MGMT_MAD_DATA,
GFP_ATOMIC);
cm_id_priv->private_data_len = private_data_len;
}
-static void cm_set_ah_attr(struct ib_ah_attr *ah_attr, u8 port_num,
- u16 dlid, u8 sl, u16 src_path_bits)
-{
- memset(ah_attr, 0, sizeof ah_attr);
- ah_attr->dlid = dlid;
- ah_attr->sl = sl;
- ah_attr->src_path_bits = src_path_bits;
- ah_attr->port_num = port_num;
-}
-
-static void cm_init_av_for_response(struct cm_port *port,
- struct ib_wc *wc, struct cm_av *av)
+static void cm_init_av_for_response(struct cm_port *port, struct ib_wc *wc,
+ struct ib_grh *grh, struct cm_av *av)
{
av->port = port;
av->pkey_index = wc->pkey_index;
- cm_set_ah_attr(&av->ah_attr, port->port_num, wc->slid,
- wc->sl, wc->dlid_path_bits);
+ ib_init_ah_from_wc(port->cm_dev->device, port->port_num, wc,
+ grh, &av->ah_attr);
}
static int cm_init_av_by_path(struct ib_sa_path_rec *path, struct cm_av *av)
return ret;
av->port = port;
- cm_set_ah_attr(&av->ah_attr, av->port->port_num,
- be16_to_cpu(path->dlid), path->sl,
- be16_to_cpu(path->slid) & 0x7F);
+ ib_init_ah_from_path(cm_dev->device, port->port_num, path,
+ &av->ah_attr);
av->packet_life_time = path->packet_life_time;
return 0;
}
static int cm_alloc_id(struct cm_id_private *cm_id_priv)
{
unsigned long flags;
- int ret;
+ int ret, id;
static int next_id;
do {
spin_lock_irqsave(&cm.lock, flags);
- ret = idr_get_new_above(&cm.local_id_table, cm_id_priv, next_id++,
- (__force int *) &cm_id_priv->id.local_id);
+ ret = idr_get_new_above(&cm.local_id_table, cm_id_priv,
+ next_id++, &id);
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);
return ret;
}
unsigned long flags;
spin_lock_irqsave(&cm.lock, flags);
- idr_remove(&cm.local_id_table, (__force int) local_id);
+ idr_remove(&cm.local_id_table,
+ (__force int) (local_id ^ cm.random_id_operand));
spin_unlock_irqrestore(&cm.lock, flags);
}
{
struct cm_id_private *cm_id_priv;
- cm_id_priv = idr_find(&cm.local_id_table, (__force int) local_id);
+ cm_id_priv = idr_find(&cm.local_id_table,
+ (__force int) (local_id ^ cm.random_id_operand));
if (cm_id_priv) {
if (cm_id_priv->id.remote_id == remote_id)
atomic_inc(&cm_id_priv->refcount);
{
int wait_time;
+ cm_cleanup_timewait(cm_id_priv->timewait_info);
+
/*
* The cm_id could be destroyed by the user before we exit timewait.
* To protect against this, we search for the cm_id after exiting
}
}
-void ib_destroy_cm_id(struct ib_cm_id *cm_id)
+static void cm_destroy_id(struct ib_cm_id *cm_id, int err)
{
struct cm_id_private *cm_id_priv;
struct cm_work *work;
sizeof cm_id_priv->av.port->cm_dev->ca_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);
+ } else {
+ spin_unlock_irqrestore(&cm_id_priv->lock, flags);
+ ib_send_cm_rej(cm_id, IB_CM_REJ_CONSUMER_DEFINED,
+ NULL, 0, NULL, 0);
+ }
+ break;
case IB_CM_MRA_REQ_RCVD:
case IB_CM_REP_SENT:
case IB_CM_MRA_REP_RCVD:
ib_cancel_mad(cm_id_priv->av.port->mad_agent, cm_id_priv->msg);
/* Fall through */
- case IB_CM_REQ_RCVD:
case IB_CM_MRA_REQ_SENT:
case IB_CM_REP_RCVD:
case IB_CM_MRA_REP_SENT:
kfree(cm_id_priv->private_data);
kfree(cm_id_priv);
}
+
+void ib_destroy_cm_id(struct ib_cm_id *cm_id)
+{
+ cm_destroy_id(cm_id, 0);
+}
EXPORT_SYMBOL(ib_destroy_cm_id);
int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id, __be64 service_mask,
cm_id_priv->timewait_info = cm_create_timewait_info(cm_id_priv->
id.local_id);
- if (IS_ERR(cm_id_priv->timewait_info))
+ if (IS_ERR(cm_id_priv->timewait_info)) {
+ ret = PTR_ERR(cm_id_priv->timewait_info);
goto out;
+ }
ret = cm_init_av_by_path(param->primary_path, &cm_id_priv->av);
if (ret)
}
cm_deref_id(cm_id_priv);
if (ret)
- ib_destroy_cm_id(&cm_id_priv->id);
+ cm_destroy_id(&cm_id_priv->id, ret);
}
static void cm_format_mra(struct cm_mra_msg *mra_msg,
cm_id_priv = container_of(cm_id, struct cm_id_private, id);
cm_id_priv->id.remote_id = req_msg->local_comm_id;
cm_init_av_for_response(work->port, work->mad_recv_wc->wc,
+ work->mad_recv_wc->recv_buf.grh,
&cm_id_priv->av);
cm_id_priv->timewait_info = cm_create_timewait_info(cm_id_priv->
id.local_id);
if (IS_ERR(cm_id_priv->timewait_info)) {
ret = PTR_ERR(cm_id_priv->timewait_info);
- goto error1;
+ goto destroy;
}
cm_id_priv->timewait_info->work.remote_id = req_msg->local_comm_id;
cm_id_priv->timewait_info->remote_ca_guid = req_msg->local_ca_guid;
listen_cm_id_priv = cm_match_req(work, cm_id_priv);
if (!listen_cm_id_priv) {
ret = -EINVAL;
- goto error2;
+ kfree(cm_id_priv->timewait_info);
+ goto destroy;
}
cm_id_priv->id.cm_handler = listen_cm_id_priv->id.cm_handler;
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)
- goto error3;
+ if (ret) {
+ ib_get_cached_gid(work->port->cm_dev->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,
+ NULL, 0);
+ goto rejected;
+ }
if (req_msg->alt_local_lid) {
ret = cm_init_av_by_path(&work->path[1], &cm_id_priv->alt_av);
- if (ret)
- goto error3;
+ if (ret) {
+ ib_send_cm_rej(cm_id, IB_CM_REJ_INVALID_ALT_GID,
+ &work->path[0].sgid,
+ sizeof work->path[0].sgid, NULL, 0);
+ goto rejected;
+ }
}
cm_id_priv->tid = req_msg->hdr.tid;
cm_id_priv->timeout_ms = cm_convert_to_ms(
cm_deref_id(listen_cm_id_priv);
return 0;
-error3: atomic_dec(&cm_id_priv->refcount);
+rejected:
+ atomic_dec(&cm_id_priv->refcount);
cm_deref_id(listen_cm_id_priv);
- cm_cleanup_timewait(cm_id_priv->timewait_info);
-error2: kfree(cm_id_priv->timewait_info);
- cm_id_priv->timewait_info = NULL;
-error1: ib_destroy_cm_id(&cm_id_priv->id);
+destroy:
+ ib_destroy_cm_id(cm_id);
return ret;
}
spin_unlock_irqrestore(&cm.lock, flags);
return NULL;
}
- cm_id_priv = idr_find(&cm.local_id_table,
- (__force int) timewait_info->work.local_id);
+ cm_id_priv = idr_find(&cm.local_id_table, (__force int)
+ (timewait_info->work.local_id ^
+ cm.random_id_operand));
if (cm_id_priv) {
if (cm_id_priv->id.remote_id == remote_id)
atomic_inc(&cm_id_priv->refcount);
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->pkey);
+ sidr_req_msg->pkey = cpu_to_be16(param->path->pkey);
sidr_req_msg->service_id = param->service_id;
if (param->private_data && param->private_data_len)
cm_id_priv->av.dgid.global.subnet_prefix = cpu_to_be64(wc->slid);
cm_id_priv->av.dgid.global.interface_id = 0;
cm_init_av_for_response(work->port, work->mad_recv_wc->wc,
+ 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;
qp_attr->qp_access_flags = IB_ACCESS_LOCAL_WRITE |
IB_ACCESS_REMOTE_WRITE;
if (cm_id_priv->responder_resources)
- qp_attr->qp_access_flags |= IB_ACCESS_REMOTE_READ;
+ qp_attr->qp_access_flags |= IB_ACCESS_REMOTE_READ |
+ IB_ACCESS_REMOTE_ATOMIC;
qp_attr->pkey_index = cm_id_priv->av.pkey_index;
qp_attr->port_num = cm_id_priv->av.port->port_num;
ret = 0;
}
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_ah_attr = cm_id_priv->alt_av.ah_attr;
}
ret = 0;
int ret;
u8 i;
+ if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
+ return;
+
cm_dev = kmalloc(sizeof(*cm_dev) + sizeof(*port) *
device->phys_port_cnt, GFP_KERNEL);
if (!cm_dev)
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);
cm.wq = create_workqueue("ib_cm");
static void __exit ib_cm_cleanup(void)
{
- flush_workqueue(cm.wq);
destroy_workqueue(cm.wq);
ib_unregister_client(&cm_client);
idr_destroy(&cm.local_id_table);
projects / firefly-linux-kernel-4.4.55.git / blobdiff