RDMA/device: Consolidate ib_device per_port data into one place

There is no reason to have three allocations of per-port data. Combine
them together and make the lifetime for all the per-port data match the
struct ib_device.

Following patches will require more port-specific data, now there is a
good place to put it.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/core/cache.c

@@ -882,7 +882,7 @@ static int _gid_table_setup_one(struct ib_device *ib_dev)
 		u8 rdma_port = port + rdma_start_port(ib_dev);
 
 		table = alloc_gid_table(
-				ib_dev->port_immutable[rdma_port].gid_tbl_len);
+			ib_dev->port_data[rdma_port].immutable.gid_tbl_len);
 		if (!table)
 			goto rollback_table_setup;
 

drivers/infiniband/core/device.c

@@ -293,8 +293,7 @@ static void ib_device_release(struct device *device)
 	WARN_ON(refcount_read(&dev->refcount));
 	ib_cache_release_one(dev);
 	ib_security_release_port_pkey_list(dev);
-	kfree(dev->port_pkey_list);
-	kfree(dev->port_immutable);
+	kfree(dev->port_data);
 	xa_destroy(&dev->client_data);
 	kfree(dev);
 }
@@ -468,27 +467,31 @@ static int verify_immutable(const struct ib_device *dev, u8 port)
 			    rdma_max_mad_size(dev, port) != 0);
 }
 
-static int read_port_immutable(struct ib_device *device)
+static int setup_port_data(struct ib_device *device)
 {
 	unsigned int port;
 	int ret;
 
-	/**
-	 * device->port_immutable is indexed directly by the port number to make
+	/*
+	 * device->port_data is indexed directly by the port number to make
 	 * access to this data as efficient as possible.
 	 *
-	 * Therefore port_immutable is declared as a 1 based array with
-	 * potential empty slots at the beginning.
+	 * Therefore port_data is declared as a 1 based array with potential
+	 * empty slots at the beginning.
 	 */
-	device->port_immutable =
-		kcalloc(rdma_end_port(device) + 1,
-			sizeof(*device->port_immutable), GFP_KERNEL);
-	if (!device->port_immutable)
+	device->port_data = kcalloc(rdma_end_port(device) + 1,
+				    sizeof(*device->port_data), GFP_KERNEL);
+	if (!device->port_data)
 		return -ENOMEM;
 
 	rdma_for_each_port (device, port) {
-		ret = device->ops.get_port_immutable(
-			device, port, &device->port_immutable[port]);
+		struct ib_port_data *pdata = &device->port_data[port];
+
+		spin_lock_init(&pdata->pkey_list_lock);
+		INIT_LIST_HEAD(&pdata->pkey_list);
+
+		ret = device->ops.get_port_immutable(device, port,
+						     &pdata->immutable);
 		if (ret)
 			return ret;
 
@@ -507,30 +510,6 @@ void ib_get_device_fw_str(struct ib_device *dev, char *str)
 }
 EXPORT_SYMBOL(ib_get_device_fw_str);
 
-static int setup_port_pkey_list(struct ib_device *device)
-{
-	int i;
-
-	/**
-	 * device->port_pkey_list is indexed directly by the port number,
-	 * Therefore it is declared as a 1 based array with potential empty
-	 * slots at the beginning.
-	 */
-	device->port_pkey_list = kcalloc(rdma_end_port(device) + 1,
-					 sizeof(*device->port_pkey_list),
-					 GFP_KERNEL);
-
-	if (!device->port_pkey_list)
-		return -ENOMEM;
-
-	for (i = 0; i < (rdma_end_port(device) + 1); i++) {
-		spin_lock_init(&device->port_pkey_list[i].list_lock);
-		INIT_LIST_HEAD(&device->port_pkey_list[i].pkey_list);
-	}
-
-	return 0;
-}
-
 static void ib_policy_change_task(struct work_struct *work)
 {
 	struct ib_device *dev;
@@ -668,10 +647,9 @@ static int setup_device(struct ib_device *device)
 	if (ret)
 		return ret;
 
-	ret = read_port_immutable(device);
+	ret = setup_port_data(device);
 	if (ret) {
-		dev_warn(&device->dev,
-			 "Couldn't create per port immutable data\n");
+		dev_warn(&device->dev, "Couldn't create per-port data\n");
 		return ret;
 	}
 
@@ -683,12 +661,6 @@ static int setup_device(struct ib_device *device)
 		return ret;
 	}
 
-	ret = setup_port_pkey_list(device);
-	if (ret) {
-		dev_warn(&device->dev, "Couldn't create per port_pkey_list\n");
-		return ret;
-	}
-
 	return 0;
 }
 
@@ -1221,7 +1193,8 @@ int ib_find_gid(struct ib_device *device, union ib_gid *gid,
 		if (!rdma_protocol_ib(device, port))
 			continue;
 
-		for (i = 0; i < device->port_immutable[port].gid_tbl_len; ++i) {
+		for (i = 0; i < device->port_data[port].immutable.gid_tbl_len;
+		     ++i) {
 			ret = rdma_query_gid(device, port, i, &tmp_gid);
 			if (ret)
 				return ret;
@@ -1253,7 +1226,8 @@ int ib_find_pkey(struct ib_device *device,
 	u16 tmp_pkey;
 	int partial_ix = -1;
 
-	for (i = 0; i < device->port_immutable[port_num].pkey_tbl_len; ++i) {
+	for (i = 0; i < device->port_data[port_num].immutable.pkey_tbl_len;
+	     ++i) {
 		ret = ib_query_pkey(device, port_num, i, &tmp_pkey);
 		if (ret)
 			return ret;

drivers/infiniband/core/security.c

@@ -49,16 +49,15 @@ static struct pkey_index_qp_list *get_pkey_idx_qp_list(struct ib_port_pkey *pp)
 	struct pkey_index_qp_list *tmp_pkey;
 	struct ib_device *dev = pp->sec->dev;
 
-	spin_lock(&dev->port_pkey_list[pp->port_num].list_lock);
-	list_for_each_entry(tmp_pkey,
-			    &dev->port_pkey_list[pp->port_num].pkey_list,
+	spin_lock(&dev->port_data[pp->port_num].pkey_list_lock);
+	list_for_each_entry (tmp_pkey, &dev->port_data[pp->port_num].pkey_list,
 			     pkey_index_list) {
 		if (tmp_pkey->pkey_index == pp->pkey_index) {
 			pkey = tmp_pkey;
 			break;
 		}
 	}
-	spin_unlock(&dev->port_pkey_list[pp->port_num].list_lock);
+	spin_unlock(&dev->port_data[pp->port_num].pkey_list_lock);
 	return pkey;
 }
 
@@ -263,12 +262,12 @@ static int port_pkey_list_insert(struct ib_port_pkey *pp)
 		if (!pkey)
 			return -ENOMEM;
 
-		spin_lock(&dev->port_pkey_list[port_num].list_lock);
+		spin_lock(&dev->port_data[port_num].pkey_list_lock);
 		/* Check for the PKey again.  A racing process may
 		 * have created it.
 		 */
 		list_for_each_entry(tmp_pkey,
-				    &dev->port_pkey_list[port_num].pkey_list,
+				    &dev->port_data[port_num].pkey_list,
 				    pkey_index_list) {
 			if (tmp_pkey->pkey_index == pp->pkey_index) {
 				kfree(pkey);
@@ -283,9 +282,9 @@ static int port_pkey_list_insert(struct ib_port_pkey *pp)
 			spin_lock_init(&pkey->qp_list_lock);
 			INIT_LIST_HEAD(&pkey->qp_list);
 			list_add(&pkey->pkey_index_list,
-				 &dev->port_pkey_list[port_num].pkey_list);
+				 &dev->port_data[port_num].pkey_list);
 		}
-		spin_unlock(&dev->port_pkey_list[port_num].list_lock);
+		spin_unlock(&dev->port_data[port_num].pkey_list_lock);
 	}
 
 	spin_lock(&pkey->qp_list_lock);
@@ -551,8 +550,7 @@ void ib_security_cache_change(struct ib_device *device,
 {
 	struct pkey_index_qp_list *pkey;
 
-	list_for_each_entry(pkey,
-			    &device->port_pkey_list[port_num].pkey_list,
+	list_for_each_entry (pkey, &device->port_data[port_num].pkey_list,
 			     pkey_index_list) {
 		check_pkey_qps(pkey,
 			       device,
@@ -569,7 +567,7 @@ void ib_security_release_port_pkey_list(struct ib_device *device)
 	rdma_for_each_port (device, i) {
 		list_for_each_entry_safe(pkey,
 					 tmp_pkey,
-					 &device->port_pkey_list[i].pkey_list,
+					 &device->port_data[i].pkey_list,
 					 pkey_index_list) {
 			list_del(&pkey->pkey_index_list);
 			kfree(pkey);

include/rdma/ib_verbs.h

@@ -2198,6 +2198,13 @@ struct ib_port_immutable {
 	u32                           max_mad_size;
 };
 
+struct ib_port_data {
+	struct ib_port_immutable immutable;
+
+	spinlock_t pkey_list_lock;
+	struct list_head pkey_list;
+};
+
 /* rdma netdev type - specifies protocol type */
 enum rdma_netdev_t {
 	RDMA_NETDEV_OPA_VNIC,
@@ -2243,12 +2250,6 @@ struct rdma_netdev_alloc_params {
 				      struct net_device *netdev, void *param);
 };
 
-struct ib_port_pkey_list {
-	/* Lock to hold while modifying the list. */
-	spinlock_t                    list_lock;
-	struct list_head              pkey_list;
-};
-
 struct ib_counters {
 	struct ib_device	*device;
 	struct ib_uobject	*uobject;
@@ -2549,14 +2550,12 @@ struct ib_device {
 
 	struct ib_cache               cache;
 	/**
-	 * port_immutable is indexed by port number
+	 * port_data is indexed by port number
 	 */
-	struct ib_port_immutable     *port_immutable;
+	struct ib_port_data *port_data;
 
 	int			      num_comp_vectors;
 
-	struct ib_port_pkey_list     *port_pkey_list;
-
 	struct iw_cm_verbs	     *iwcm;
 
 	struct module               *owner;
@@ -2860,34 +2859,38 @@ static inline int rdma_is_port_valid(const struct ib_device *device,
 static inline bool rdma_is_grh_required(const struct ib_device *device,
 					u8 port_num)
 {
-	return device->port_immutable[port_num].core_cap_flags &
+	return device->port_data[port_num].immutable.core_cap_flags &
 	       RDMA_CORE_PORT_IB_GRH_REQUIRED;
 }
 
 static inline bool rdma_protocol_ib(const struct ib_device *device, u8 port_num)
 {
-	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IB;
+	return device->port_data[port_num].immutable.core_cap_flags &
+	       RDMA_CORE_CAP_PROT_IB;
 }
 
 static inline bool rdma_protocol_roce(const struct ib_device *device, u8 port_num)
 {
-	return device->port_immutable[port_num].core_cap_flags &
+	return device->port_data[port_num].immutable.core_cap_flags &
 	       (RDMA_CORE_CAP_PROT_ROCE | RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP);
 }
 
 static inline bool rdma_protocol_roce_udp_encap(const struct ib_device *device, u8 port_num)
 {
-	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP;
+	return device->port_data[port_num].immutable.core_cap_flags &
+	       RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP;
 }
 
 static inline bool rdma_protocol_roce_eth_encap(const struct ib_device *device, u8 port_num)
 {
-	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE;
+	return device->port_data[port_num].immutable.core_cap_flags &
+	       RDMA_CORE_CAP_PROT_ROCE;
 }
 
 static inline bool rdma_protocol_iwarp(const struct ib_device *device, u8 port_num)
 {
-	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IWARP;
+	return device->port_data[port_num].immutable.core_cap_flags &
+	       RDMA_CORE_CAP_PROT_IWARP;
 }
 
 static inline bool rdma_ib_or_roce(const struct ib_device *device, u8 port_num)
@@ -2898,12 +2901,14 @@ static inline bool rdma_ib_or_roce(const struct ib_device *device, u8 port_num)
 
 static inline bool rdma_protocol_raw_packet(const struct ib_device *device, u8 port_num)
 {
-	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_RAW_PACKET;
+	return device->port_data[port_num].immutable.core_cap_flags &
+	       RDMA_CORE_CAP_PROT_RAW_PACKET;
 }
 
 static inline bool rdma_protocol_usnic(const struct ib_device *device, u8 port_num)
 {
-	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_USNIC;
+	return device->port_data[port_num].immutable.core_cap_flags &
+	       RDMA_CORE_CAP_PROT_USNIC;
 }
 
 /**
@@ -2920,7 +2925,8 @@ static inline bool rdma_protocol_usnic(const struct ib_device *device, u8 port_n
  */
 static inline bool rdma_cap_ib_mad(const struct ib_device *device, u8 port_num)
 {
-	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_MAD;
+	return device->port_data[port_num].immutable.core_cap_flags &
+	       RDMA_CORE_CAP_IB_MAD;
 }
 
 /**
@@ -2944,8 +2950,8 @@ static inline bool rdma_cap_ib_mad(const struct ib_device *device, u8 port_num)
  */
 static inline bool rdma_cap_opa_mad(struct ib_device *device, u8 port_num)
 {
-	return (device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_OPA_MAD)
-		== RDMA_CORE_CAP_OPA_MAD;
+	return (device->port_data[port_num].immutable.core_cap_flags &
+		RDMA_CORE_CAP_OPA_MAD) == RDMA_CORE_CAP_OPA_MAD;
 }
 
 /**
@@ -2970,7 +2976,8 @@ static inline bool rdma_cap_opa_mad(struct ib_device *device, u8 port_num)
  */
 static inline bool rdma_cap_ib_smi(const struct ib_device *device, u8 port_num)
 {
-	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SMI;
+	return device->port_data[port_num].immutable.core_cap_flags &
+	       RDMA_CORE_CAP_IB_SMI;
 }
 
 /**
@@ -2990,7 +2997,8 @@ static inline bool rdma_cap_ib_smi(const struct ib_device *device, u8 port_num)
  */
 static inline bool rdma_cap_ib_cm(const struct ib_device *device, u8 port_num)
 {
-	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_CM;
+	return device->port_data[port_num].immutable.core_cap_flags &
+	       RDMA_CORE_CAP_IB_CM;
 }
 
 /**
@@ -3007,7 +3015,8 @@ static inline bool rdma_cap_ib_cm(const struct ib_device *device, u8 port_num)
  */
 static inline bool rdma_cap_iw_cm(const struct ib_device *device, u8 port_num)
 {
-	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IW_CM;
+	return device->port_data[port_num].immutable.core_cap_flags &
+	       RDMA_CORE_CAP_IW_CM;
 }
 
 /**
@@ -3027,7 +3036,8 @@ static inline bool rdma_cap_iw_cm(const struct ib_device *device, u8 port_num)
  */
 static inline bool rdma_cap_ib_sa(const struct ib_device *device, u8 port_num)
 {
-	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SA;
+	return device->port_data[port_num].immutable.core_cap_flags &
+	       RDMA_CORE_CAP_IB_SA;
 }
 
 /**
@@ -3067,7 +3077,8 @@ static inline bool rdma_cap_ib_mcast(const struct ib_device *device, u8 port_num
  */
 static inline bool rdma_cap_af_ib(const struct ib_device *device, u8 port_num)
 {
-	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_AF_IB;
+	return device->port_data[port_num].immutable.core_cap_flags &
+	       RDMA_CORE_CAP_AF_IB;
 }
 
 /**
@@ -3088,7 +3099,8 @@ static inline bool rdma_cap_af_ib(const struct ib_device *device, u8 port_num)
  */
 static inline bool rdma_cap_eth_ah(const struct ib_device *device, u8 port_num)
 {
-	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_ETH_AH;
+	return device->port_data[port_num].immutable.core_cap_flags &
+	       RDMA_CORE_CAP_ETH_AH;
 }
 
 /**
@@ -3102,7 +3114,7 @@ static inline bool rdma_cap_eth_ah(const struct ib_device *device, u8 port_num)
  */
 static inline bool rdma_cap_opa_ah(struct ib_device *device, u8 port_num)
 {
-	return (device->port_immutable[port_num].core_cap_flags &
+	return (device->port_data[port_num].immutable.core_cap_flags &
 		RDMA_CORE_CAP_OPA_AH) == RDMA_CORE_CAP_OPA_AH;
 }
 
@@ -3120,7 +3132,7 @@ static inline bool rdma_cap_opa_ah(struct ib_device *device, u8 port_num)
  */
 static inline size_t rdma_max_mad_size(const struct ib_device *device, u8 port_num)
 {
-	return device->port_immutable[port_num].max_mad_size;
+	return device->port_data[port_num].immutable.max_mad_size;
 }
 
 /**