Commit 976fd0e2 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband 

* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband:
  IB/core: Set static rate in ib_init_ah_from_path()
  IB/ipath: Make ipath_map_sg() static
  IB/core: Fix sparse warnings about shadowed declarations
  RDMA/cma: Add multicast communication support
  IB/sa: Track multicast join/leave requests
  IPoIB: CM error handling thinko fix
  RDMA/cxgb3: Remove Open Grid Computing copyrights in iw_cxgb3 driver
  RDMA/cxgb3: Fail posts synchronously when in TERMINATE state
  RDMA/iwcm: iw_cm_id destruction race fixes
  IB/ehca: Change query_port() to return LINK_UP instead UNKNOWN
  IB/ehca: Allow en/disabling scaling code via module parameter
  IB/ehca: Fix race condition/locking issues in scaling code
  IB/ehca: Rework irq handler
  IPoIB: Only allow root to change between datagram and connected mode
  IB/mthca: Fix allocation of ICM chunks in coherent memory
  IB/mthca: Allow the QP state transition RESET->RESET
parents 733abe4f 7084f842

drivers/infiniband/core/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -12,7 +12,7 @@ ib_core-y := packer.o ud_header.o verbs.o sysfs.o \ 


ib_mad-y :=			mad.o smi.o agent.o mad_rmpp.o



ib_sa-y :=			sa_query.o

ib_sa-y :=			sa_query.o multicast.o



ib_cm-y :=			cm.o

drivers/infiniband/core/cma.c

+315 −44
Original line number Diff line number Diff line
@@ -71,6 +71,7 @@ static struct workqueue_struct *cma_wq; 
static DEFINE_IDR(sdp_ps);

static DEFINE_IDR(tcp_ps);

static DEFINE_IDR(udp_ps);

static DEFINE_IDR(ipoib_ps);

static int next_port;



struct cma_device {
@@ -116,6 +117,7 @@ struct rdma_id_private { 
	struct list_head	list;

	struct list_head	listen_list;

	struct cma_device	*cma_dev;

	struct list_head	mc_list;



	enum cma_state		state;

	spinlock_t		lock;
@@ -134,10 +136,23 @@ struct rdma_id_private { 
	} cm_id;



	u32			seq_num;

	u32			qkey;

	u32			qp_num;

	u8			srq;

};



struct cma_multicast {

	struct rdma_id_private *id_priv;

	union {

		struct ib_sa_multicast *ib;

	} multicast;

	struct list_head	list;

	void			*context;

	struct sockaddr		addr;

	u8			pad[sizeof(struct sockaddr_in6) -

				    sizeof(struct sockaddr)];

};



struct cma_work {

	struct work_struct	work;

	struct rdma_id_private	*id;
@@ -243,6 +258,11 @@ static inline void sdp_set_ip_ver(struct sdp_hh *hh, u8 ip_ver) 
	hh->ip_version = (ip_ver << 4) | (hh->ip_version & 0xF);

}



static inline int cma_is_ud_ps(enum rdma_port_space ps)

{

	return (ps == RDMA_PS_UDP || ps == RDMA_PS_IPOIB);

}



static void cma_attach_to_dev(struct rdma_id_private *id_priv,

			      struct cma_device *cma_dev)

{
@@ -265,19 +285,41 @@ static void cma_detach_from_dev(struct rdma_id_private *id_priv) 
	id_priv->cma_dev = NULL;

}



static int cma_set_qkey(struct ib_device *device, u8 port_num,

			enum rdma_port_space ps,

			struct rdma_dev_addr *dev_addr, u32 *qkey)

{

	struct ib_sa_mcmember_rec rec;

	int ret = 0;



	switch (ps) {

	case RDMA_PS_UDP:

		*qkey = RDMA_UDP_QKEY;

		break;

	case RDMA_PS_IPOIB:

		ib_addr_get_mgid(dev_addr, &rec.mgid);

		ret = ib_sa_get_mcmember_rec(device, port_num, &rec.mgid, &rec);

		*qkey = be32_to_cpu(rec.qkey);

		break;

	default:

		break;

	}

	return ret;

}



static int cma_acquire_dev(struct rdma_id_private *id_priv)

{

	enum rdma_node_type dev_type = id_priv->id.route.addr.dev_addr.dev_type;

	struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;

	struct cma_device *cma_dev;

	union ib_gid gid;

	int ret = -ENODEV;



	switch (rdma_node_get_transport(dev_type)) {

	switch (rdma_node_get_transport(dev_addr->dev_type)) {

	case RDMA_TRANSPORT_IB:

		ib_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid);

		ib_addr_get_sgid(dev_addr, &gid);

		break;

	case RDMA_TRANSPORT_IWARP:

		iw_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid);

		iw_addr_get_sgid(dev_addr, &gid);

		break;

	default:

		return -ENODEV;
@@ -287,6 +329,11 @@ static int cma_acquire_dev(struct rdma_id_private *id_priv) 
		ret = ib_find_cached_gid(cma_dev->device, &gid,

					 &id_priv->id.port_num, NULL);

		if (!ret) {

			ret = cma_set_qkey(cma_dev->device,

					   id_priv->id.port_num,

					   id_priv->id.ps, dev_addr,

					   &id_priv->qkey);

			if (!ret)

				cma_attach_to_dev(id_priv, cma_dev);

			break;

		}
@@ -325,40 +372,50 @@ struct rdma_cm_id *rdma_create_id(rdma_cm_event_handler event_handler, 
	init_waitqueue_head(&id_priv->wait_remove);

	atomic_set(&id_priv->dev_remove, 0);

	INIT_LIST_HEAD(&id_priv->listen_list);

	INIT_LIST_HEAD(&id_priv->mc_list);

	get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num);



	return &id_priv->id;

}

EXPORT_SYMBOL(rdma_create_id);



static int cma_init_ib_qp(struct rdma_id_private *id_priv, struct ib_qp *qp)

static int cma_init_ud_qp(struct rdma_id_private *id_priv, struct ib_qp *qp)

{

	struct ib_qp_attr qp_attr;

	struct rdma_dev_addr *dev_addr;

	int ret;

	int qp_attr_mask, ret;



	dev_addr = &id_priv->id.route.addr.dev_addr;

	ret = ib_find_cached_pkey(id_priv->id.device, id_priv->id.port_num,

				  ib_addr_get_pkey(dev_addr),

				  &qp_attr.pkey_index);

	qp_attr.qp_state = IB_QPS_INIT;

	ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask);

	if (ret)

		return ret;



	qp_attr.qp_state = IB_QPS_INIT;

	qp_attr.qp_access_flags = 0;

	qp_attr.port_num = id_priv->id.port_num;

	return ib_modify_qp(qp, &qp_attr, IB_QP_STATE | IB_QP_ACCESS_FLAGS |

					  IB_QP_PKEY_INDEX | IB_QP_PORT);

	ret = ib_modify_qp(qp, &qp_attr, qp_attr_mask);

	if (ret)

		return ret;



	qp_attr.qp_state = IB_QPS_RTR;

	ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE);

	if (ret)

		return ret;



	qp_attr.qp_state = IB_QPS_RTS;

	qp_attr.sq_psn = 0;

	ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE | IB_QP_SQ_PSN);



	return ret;

}



static int cma_init_iw_qp(struct rdma_id_private *id_priv, struct ib_qp *qp)

static int cma_init_conn_qp(struct rdma_id_private *id_priv, struct ib_qp *qp)

{

	struct ib_qp_attr qp_attr;

	int qp_attr_mask, ret;



	qp_attr.qp_state = IB_QPS_INIT;

	qp_attr.qp_access_flags = IB_ACCESS_LOCAL_WRITE;

	ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask);

	if (ret)

		return ret;



	return ib_modify_qp(qp, &qp_attr, IB_QP_STATE | IB_QP_ACCESS_FLAGS);

	return ib_modify_qp(qp, &qp_attr, qp_attr_mask);

}



int rdma_create_qp(struct rdma_cm_id *id, struct ib_pd *pd,
@@ -376,18 +433,10 @@ int rdma_create_qp(struct rdma_cm_id *id, struct ib_pd *pd, 
	if (IS_ERR(qp))

		return PTR_ERR(qp);



	switch (rdma_node_get_transport(id->device->node_type)) {

	case RDMA_TRANSPORT_IB:

		ret = cma_init_ib_qp(id_priv, qp);

		break;

	case RDMA_TRANSPORT_IWARP:

		ret = cma_init_iw_qp(id_priv, qp);

		break;

	default:

		ret = -ENOSYS;

		break;

	}



	if (cma_is_ud_ps(id_priv->id.ps))

		ret = cma_init_ud_qp(id_priv, qp);

	else

		ret = cma_init_conn_qp(id_priv, qp);

	if (ret)

		goto err;
@@ -460,21 +509,53 @@ static int cma_modify_qp_err(struct rdma_cm_id *id) 
	return ib_modify_qp(id->qp, &qp_attr, IB_QP_STATE);

}



static int cma_ib_init_qp_attr(struct rdma_id_private *id_priv,

			       struct ib_qp_attr *qp_attr, int *qp_attr_mask)

{

	struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;

	int ret;



	ret = ib_find_cached_pkey(id_priv->id.device, id_priv->id.port_num,

				  ib_addr_get_pkey(dev_addr),

				  &qp_attr->pkey_index);

	if (ret)

		return ret;



	qp_attr->port_num = id_priv->id.port_num;

	*qp_attr_mask = IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT;



	if (cma_is_ud_ps(id_priv->id.ps)) {

		qp_attr->qkey = id_priv->qkey;

		*qp_attr_mask |= IB_QP_QKEY;

	} else {

		qp_attr->qp_access_flags = 0;

		*qp_attr_mask |= IB_QP_ACCESS_FLAGS;

	}

	return 0;

}



int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr,

		       int *qp_attr_mask)

{

	struct rdma_id_private *id_priv;

	int ret;

	int ret = 0;



	id_priv = container_of(id, struct rdma_id_private, id);

	switch (rdma_node_get_transport(id_priv->id.device->node_type)) {

	case RDMA_TRANSPORT_IB:

		if (!id_priv->cm_id.ib || cma_is_ud_ps(id_priv->id.ps))

			ret = cma_ib_init_qp_attr(id_priv, qp_attr, qp_attr_mask);

		else

			ret = ib_cm_init_qp_attr(id_priv->cm_id.ib, qp_attr,

						 qp_attr_mask);

		if (qp_attr->qp_state == IB_QPS_RTR)

			qp_attr->rq_psn = id_priv->seq_num;

		break;

	case RDMA_TRANSPORT_IWARP:

		if (!id_priv->cm_id.iw) {

			qp_attr->qp_access_flags = IB_ACCESS_LOCAL_WRITE;

			*qp_attr_mask = IB_QP_STATE | IB_QP_ACCESS_FLAGS;

		} else

			ret = iw_cm_init_qp_attr(id_priv->cm_id.iw, qp_attr,

						 qp_attr_mask);

		break;
@@ -698,6 +779,19 @@ static void cma_release_port(struct rdma_id_private *id_priv) 
	mutex_unlock(&lock);

}



static void cma_leave_mc_groups(struct rdma_id_private *id_priv)

{

	struct cma_multicast *mc;



	while (!list_empty(&id_priv->mc_list)) {

		mc = container_of(id_priv->mc_list.next,

				  struct cma_multicast, list);

		list_del(&mc->list);

		ib_sa_free_multicast(mc->multicast.ib);

		kfree(mc);

	}

}



void rdma_destroy_id(struct rdma_cm_id *id)

{

	struct rdma_id_private *id_priv;
@@ -722,6 +816,7 @@ void rdma_destroy_id(struct rdma_cm_id *id) 
		default:

			break;

		}

		cma_leave_mc_groups(id_priv);

		mutex_lock(&lock);

		cma_detach_from_dev(id_priv);

	}
@@ -972,7 +1067,7 @@ static int cma_req_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) 
	memset(&event, 0, sizeof event);

	offset = cma_user_data_offset(listen_id->id.ps);

	event.event = RDMA_CM_EVENT_CONNECT_REQUEST;

	if (listen_id->id.ps == RDMA_PS_UDP) {

	if (cma_is_ud_ps(listen_id->id.ps)) {

		conn_id = cma_new_udp_id(&listen_id->id, ib_event);

		event.param.ud.private_data = ib_event->private_data + offset;

		event.param.ud.private_data_len =
@@ -1725,7 +1820,7 @@ static int cma_alloc_port(struct idr *ps, struct rdma_id_private *id_priv, 
	struct rdma_bind_list *bind_list;

	int port, ret;



	bind_list = kzalloc(sizeof *bind_list, GFP_KERNEL);

	bind_list = kmalloc(sizeof *bind_list, GFP_KERNEL);

	if (!bind_list)

		return -ENOMEM;
@@ -1847,6 +1942,9 @@ static int cma_get_port(struct rdma_id_private *id_priv) 
	case RDMA_PS_UDP:

		ps = &udp_ps;

		break;

	case RDMA_PS_IPOIB:

		ps = &ipoib_ps;

		break;

	default:

		return -EPROTONOSUPPORT;

	}
@@ -1961,7 +2059,7 @@ static int cma_sidr_rep_handler(struct ib_cm_id *cm_id, 
			event.status = ib_event->param.sidr_rep_rcvd.status;

			break;

		}

		if (rep->qkey != RDMA_UD_QKEY) {

		if (id_priv->qkey != rep->qkey) {

			event.event = RDMA_CM_EVENT_UNREACHABLE;

			event.status = -EINVAL;

			break;
@@ -2160,7 +2258,7 @@ int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) 


	switch (rdma_node_get_transport(id->device->node_type)) {

	case RDMA_TRANSPORT_IB:

		if (id->ps == RDMA_PS_UDP)

		if (cma_is_ud_ps(id->ps))

			ret = cma_resolve_ib_udp(id_priv, conn_param);

		else

			ret = cma_connect_ib(id_priv, conn_param);
@@ -2256,7 +2354,7 @@ static int cma_send_sidr_rep(struct rdma_id_private *id_priv, 
	rep.status = status;

	if (status == IB_SIDR_SUCCESS) {

		rep.qp_num = id_priv->qp_num;

		rep.qkey = RDMA_UD_QKEY;

		rep.qkey = id_priv->qkey;

	}

	rep.private_data = private_data;

	rep.private_data_len = private_data_len;
@@ -2280,7 +2378,7 @@ int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) 


	switch (rdma_node_get_transport(id->device->node_type)) {

	case RDMA_TRANSPORT_IB:

		if (id->ps == RDMA_PS_UDP)

		if (cma_is_ud_ps(id->ps))

			ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS,

						conn_param->private_data,

						conn_param->private_data_len);
@@ -2341,7 +2439,7 @@ int rdma_reject(struct rdma_cm_id *id, const void *private_data, 


	switch (rdma_node_get_transport(id->device->node_type)) {

	case RDMA_TRANSPORT_IB:

		if (id->ps == RDMA_PS_UDP)

		if (cma_is_ud_ps(id->ps))

			ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT,

						private_data, private_data_len);

		else
@@ -2392,6 +2490,178 @@ out: 
}

EXPORT_SYMBOL(rdma_disconnect);



static int cma_ib_mc_handler(int status, struct ib_sa_multicast *multicast)

{

	struct rdma_id_private *id_priv;

	struct cma_multicast *mc = multicast->context;

	struct rdma_cm_event event;

	int ret;



	id_priv = mc->id_priv;

	atomic_inc(&id_priv->dev_remove);

	if (!cma_comp(id_priv, CMA_ADDR_BOUND) &&

	    !cma_comp(id_priv, CMA_ADDR_RESOLVED))

		goto out;



	if (!status && id_priv->id.qp)

		status = ib_attach_mcast(id_priv->id.qp, &multicast->rec.mgid,

					 multicast->rec.mlid);



	memset(&event, 0, sizeof event);

	event.status = status;

	event.param.ud.private_data = mc->context;

	if (!status) {

		event.event = RDMA_CM_EVENT_MULTICAST_JOIN;

		ib_init_ah_from_mcmember(id_priv->id.device,

					 id_priv->id.port_num, &multicast->rec,

					 &event.param.ud.ah_attr);

		event.param.ud.qp_num = 0xFFFFFF;

		event.param.ud.qkey = be32_to_cpu(multicast->rec.qkey);

	} else

		event.event = RDMA_CM_EVENT_MULTICAST_ERROR;



	ret = id_priv->id.event_handler(&id_priv->id, &event);

	if (ret) {

		cma_exch(id_priv, CMA_DESTROYING);

		cma_release_remove(id_priv);

		rdma_destroy_id(&id_priv->id);

		return 0;

	}

out:

	cma_release_remove(id_priv);

	return 0;

}



static void cma_set_mgid(struct rdma_id_private *id_priv,

			 struct sockaddr *addr, union ib_gid *mgid)

{

	unsigned char mc_map[MAX_ADDR_LEN];

	struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;

	struct sockaddr_in *sin = (struct sockaddr_in *) addr;

	struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) addr;



	if (cma_any_addr(addr)) {

		memset(mgid, 0, sizeof *mgid);

	} else if ((addr->sa_family == AF_INET6) &&

		   ((be32_to_cpu(sin6->sin6_addr.s6_addr32[0]) & 0xFF10A01B) ==

								 0xFF10A01B)) {

		/* IPv6 address is an SA assigned MGID. */

		memcpy(mgid, &sin6->sin6_addr, sizeof *mgid);

	} else {

		ip_ib_mc_map(sin->sin_addr.s_addr, mc_map);

		if (id_priv->id.ps == RDMA_PS_UDP)

			mc_map[7] = 0x01;	/* Use RDMA CM signature */

		mc_map[8] = ib_addr_get_pkey(dev_addr) >> 8;

		mc_map[9] = (unsigned char) ib_addr_get_pkey(dev_addr);

		*mgid = *(union ib_gid *) (mc_map + 4);

	}

}



static int cma_join_ib_multicast(struct rdma_id_private *id_priv,

				 struct cma_multicast *mc)

{

	struct ib_sa_mcmember_rec rec;

	struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;

	ib_sa_comp_mask comp_mask;

	int ret;



	ib_addr_get_mgid(dev_addr, &rec.mgid);

	ret = ib_sa_get_mcmember_rec(id_priv->id.device, id_priv->id.port_num,

				     &rec.mgid, &rec);

	if (ret)

		return ret;



	cma_set_mgid(id_priv, &mc->addr, &rec.mgid);

	if (id_priv->id.ps == RDMA_PS_UDP)

		rec.qkey = cpu_to_be32(RDMA_UDP_QKEY);

	ib_addr_get_sgid(dev_addr, &rec.port_gid);

	rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr));

	rec.join_state = 1;



	comp_mask = IB_SA_MCMEMBER_REC_MGID | IB_SA_MCMEMBER_REC_PORT_GID |

		    IB_SA_MCMEMBER_REC_PKEY | IB_SA_MCMEMBER_REC_JOIN_STATE |

		    IB_SA_MCMEMBER_REC_QKEY | IB_SA_MCMEMBER_REC_SL |

		    IB_SA_MCMEMBER_REC_FLOW_LABEL |

		    IB_SA_MCMEMBER_REC_TRAFFIC_CLASS;



	mc->multicast.ib = ib_sa_join_multicast(&sa_client, id_priv->id.device,

						id_priv->id.port_num, &rec,

						comp_mask, GFP_KERNEL,

						cma_ib_mc_handler, mc);

	if (IS_ERR(mc->multicast.ib))

		return PTR_ERR(mc->multicast.ib);



	return 0;

}



int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr,

			void *context)

{

	struct rdma_id_private *id_priv;

	struct cma_multicast *mc;

	int ret;



	id_priv = container_of(id, struct rdma_id_private, id);

	if (!cma_comp(id_priv, CMA_ADDR_BOUND) &&

	    !cma_comp(id_priv, CMA_ADDR_RESOLVED))

		return -EINVAL;



	mc = kmalloc(sizeof *mc, GFP_KERNEL);

	if (!mc)

		return -ENOMEM;



	memcpy(&mc->addr, addr, ip_addr_size(addr));

	mc->context = context;

	mc->id_priv = id_priv;



	spin_lock(&id_priv->lock);

	list_add(&mc->list, &id_priv->mc_list);

	spin_unlock(&id_priv->lock);



	switch (rdma_node_get_transport(id->device->node_type)) {

	case RDMA_TRANSPORT_IB:

		ret = cma_join_ib_multicast(id_priv, mc);

		break;

	default:

		ret = -ENOSYS;

		break;

	}



	if (ret) {

		spin_lock_irq(&id_priv->lock);

		list_del(&mc->list);

		spin_unlock_irq(&id_priv->lock);

		kfree(mc);

	}

	return ret;

}

EXPORT_SYMBOL(rdma_join_multicast);



void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr)

{

	struct rdma_id_private *id_priv;

	struct cma_multicast *mc;



	id_priv = container_of(id, struct rdma_id_private, id);

	spin_lock_irq(&id_priv->lock);

	list_for_each_entry(mc, &id_priv->mc_list, list) {

		if (!memcmp(&mc->addr, addr, ip_addr_size(addr))) {

			list_del(&mc->list);

			spin_unlock_irq(&id_priv->lock);



			if (id->qp)

				ib_detach_mcast(id->qp,

						&mc->multicast.ib->rec.mgid,

						mc->multicast.ib->rec.mlid);

			ib_sa_free_multicast(mc->multicast.ib);

			kfree(mc);

			return;

		}

	}

	spin_unlock_irq(&id_priv->lock);

}

EXPORT_SYMBOL(rdma_leave_multicast);



static void cma_add_one(struct ib_device *device)

{

	struct cma_device *cma_dev;
@@ -2522,6 +2792,7 @@ static void cma_cleanup(void) 
	idr_destroy(&sdp_ps);

	idr_destroy(&tcp_ps);

	idr_destroy(&udp_ps);

	idr_destroy(&ipoib_ps);

}



module_init(cma_init);

drivers/infiniband/core/fmr_pool.c

+2 −2
Original line number Diff line number Diff line
@@ -301,7 +301,7 @@ struct ib_fmr_pool *ib_create_fmr_pool(struct ib_pd *pd, 


	{

		struct ib_pool_fmr *fmr;

		struct ib_fmr_attr attr = {

		struct ib_fmr_attr fmr_attr = {

			.max_pages  = params->max_pages_per_fmr,

			.max_maps   = pool->max_remaps,

			.page_shift = params->page_shift
@@ -321,7 +321,7 @@ struct ib_fmr_pool *ib_create_fmr_pool(struct ib_pd *pd, 
			fmr->ref_count        = 0;

			INIT_HLIST_NODE(&fmr->cache_node);



			fmr->fmr = ib_alloc_fmr(pd, params->access, &attr);

			fmr->fmr = ib_alloc_fmr(pd, params->access, &fmr_attr);

			if (IS_ERR(fmr->fmr)) {

				printk(KERN_WARNING "fmr_create failed for FMR %d", i);

				kfree(fmr);

drivers/infiniband/core/iwcm.c

+25 −22
Original line number Diff line number Diff line
@@ -146,6 +146,12 @@ static int copy_private_data(struct iw_cm_event *event) 
	return 0;

}



static void free_cm_id(struct iwcm_id_private *cm_id_priv)

{

	dealloc_work_entries(cm_id_priv);

	kfree(cm_id_priv);

}



/*

 * Release a reference on cm_id. If the last reference is being

 * released, enable the waiting thread (in iw_destroy_cm_id) to
@@ -153,21 +159,14 @@ static int copy_private_data(struct iw_cm_event *event) 
 */

static int iwcm_deref_id(struct iwcm_id_private *cm_id_priv)

{

	int ret = 0;



	BUG_ON(atomic_read(&cm_id_priv->refcount)==0);

	if (atomic_dec_and_test(&cm_id_priv->refcount)) {

		BUG_ON(!list_empty(&cm_id_priv->work_list));

		if (waitqueue_active(&cm_id_priv->destroy_comp.wait)) {

			BUG_ON(cm_id_priv->state != IW_CM_STATE_DESTROYING);

			BUG_ON(test_bit(IWCM_F_CALLBACK_DESTROY,

					&cm_id_priv->flags));

			ret = 1;

		}

		complete(&cm_id_priv->destroy_comp);

		return 1;

	}



	return ret;

	return 0;

}



static void add_ref(struct iw_cm_id *cm_id)
@@ -181,7 +180,11 @@ static void rem_ref(struct iw_cm_id *cm_id) 
{

	struct iwcm_id_private *cm_id_priv;

	cm_id_priv = container_of(cm_id, struct iwcm_id_private, id);

	iwcm_deref_id(cm_id_priv);

	if (iwcm_deref_id(cm_id_priv) &&

	    test_bit(IWCM_F_CALLBACK_DESTROY, &cm_id_priv->flags)) {

		BUG_ON(!list_empty(&cm_id_priv->work_list));

		free_cm_id(cm_id_priv);

	}

}



static int cm_event_handler(struct iw_cm_id *cm_id, struct iw_cm_event *event);
@@ -355,7 +358,9 @@ static void destroy_cm_id(struct iw_cm_id *cm_id) 
	case IW_CM_STATE_CONN_RECV:

		/*

		 * App called destroy before/without calling accept after

		 * receiving connection request event notification.

		 * receiving connection request event notification or

		 * returned non zero from the event callback function.

		 * In either case, must tell the provider to reject.

		 */

		cm_id_priv->state = IW_CM_STATE_DESTROYING;

		break;
@@ -391,9 +396,7 @@ void iw_destroy_cm_id(struct iw_cm_id *cm_id) 


	wait_for_completion(&cm_id_priv->destroy_comp);



	dealloc_work_entries(cm_id_priv);



	kfree(cm_id_priv);

	free_cm_id(cm_id_priv);

}

EXPORT_SYMBOL(iw_destroy_cm_id);
@@ -647,10 +650,11 @@ static void cm_conn_req_handler(struct iwcm_id_private *listen_id_priv, 
	/* Call the client CM handler */

	ret = cm_id->cm_handler(cm_id, iw_event);

	if (ret) {

		iw_cm_reject(cm_id, NULL, 0);

		set_bit(IWCM_F_CALLBACK_DESTROY, &cm_id_priv->flags);

		destroy_cm_id(cm_id);

		if (atomic_read(&cm_id_priv->refcount)==0)

			kfree(cm_id);

			free_cm_id(cm_id_priv);

	}



out:
@@ -854,13 +858,12 @@ static void cm_work_handler(struct work_struct *_work) 
			destroy_cm_id(&cm_id_priv->id);

		}

		BUG_ON(atomic_read(&cm_id_priv->refcount)==0);

		if (iwcm_deref_id(cm_id_priv))

			return;



		if (atomic_read(&cm_id_priv->refcount)==0 &&

		    test_bit(IWCM_F_CALLBACK_DESTROY, &cm_id_priv->flags)) {

			dealloc_work_entries(cm_id_priv);

			kfree(cm_id_priv);

		if (iwcm_deref_id(cm_id_priv)) {

			if (test_bit(IWCM_F_CALLBACK_DESTROY,

				     &cm_id_priv->flags)) {

				BUG_ON(!list_empty(&cm_id_priv->work_list));

				free_cm_id(cm_id_priv);

			}

			return;

		}

		spin_lock_irqsave(&cm_id_priv->lock, flags);

drivers/infiniband/core/multicast.c

0 → 100644
+837 −0

File added.

Preview size limit exceeded, changes collapsed.

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