Minor updates for 4.1-rc

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Merge tag 'for-linus' of git://github.com/dledford/linux

Pull infiniband updates from Doug Ledford:
 "Minor updates for 4.1-rc

  Most of the changes are fairly small and well confined.  The iWARP
  address reporting changes are the only ones that are a medium size.  I
  had these queued up prior to rc1, but due to the shuffle in
  maintainers, they did not get submitted when I expected.  My apologies
  for that.  I feel comfortable with them however due to the testing
  they've received, so I left them in this submission"

* tag 'for-linus' of git://github.com/dledford/linux:
  MAINTAINERS: Update InfiniBand subsystem maintainer
  MAINTAINERS: add include/rdma/ to InfiniBand subsystem
  IPoIB/CM: Fix indentation level
  iw_cxgb4: Remove negative advice dmesg warnings
  IB/core: Fix unaligned accesses
  IB/core: change rdma_gid2ip into void function as it always return zero
  IB/qib: use arch_phys_wc_add()
  IB/qib: add acounting for MTRR
  IB/core: dma unmap optimizations
  IB/core: dma map/unmap locking optimizations
  RDMA/cxgb4: Report the actual address of the remote connecting peer
  RDMA/nes: Report the actual address of the remote connecting peer
  RDMA/core: Enable the iWarp Port Mapper to provide the actual address of the connecting peer to its clients
  iw_cxgb4: enforce qp/cq id requirements
  iw_cxgb4: use BAR2 GTS register for T5 kernel mode CQs
  iw_cxgb4: 32b platform fixes
  iw_cxgb4: Cleanup register defines/MACROS
  RDMA/CMA: Canonize IPv4 on IPV6 sockets properly

MAINTAINERS

@@ -5042,17 +5042,19 @@ S:	Orphan
 F:	drivers/video/fbdev/imsttfb.c
 
 INFINIBAND SUBSYSTEM
-M:	Roland Dreier <roland@kernel.org>
+M:	Doug Ledford <dledford@redhat.com>
 M:	Sean Hefty <sean.hefty@intel.com>
 M:	Hal Rosenstock <hal.rosenstock@gmail.com>
 L:	linux-rdma@vger.kernel.org
 W:	http://www.openfabrics.org/
 Q:	http://patchwork.kernel.org/project/linux-rdma/list/
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband.git
+T:	git git://github.com/dledford/linux.git
 S:	Supported
 F:	Documentation/infiniband/
 F:	drivers/infiniband/
 F:	include/uapi/linux/if_infiniband.h
+F:	include/uapi/rdma/
+F:	include/rdma/
 
 INOTIFY
 M:	John McCutchan <john@johnmccutchan.com>

drivers/infiniband/core/addr.c

@@ -472,13 +472,8 @@ int rdma_addr_find_dmac_by_grh(union ib_gid *sgid, union ib_gid *dgid, u8 *dmac,
 	} sgid_addr, dgid_addr;
 
 
-	ret = rdma_gid2ip(&sgid_addr._sockaddr, sgid);
+	rdma_gid2ip(&sgid_addr._sockaddr, sgid);
-	if (ret)
+	rdma_gid2ip(&dgid_addr._sockaddr, dgid);
-		return ret;
-
-	ret = rdma_gid2ip(&dgid_addr._sockaddr, dgid);
-	if (ret)
-		return ret;
 
 	memset(&dev_addr, 0, sizeof(dev_addr));
 
@@ -512,10 +507,8 @@ int rdma_addr_find_smac_by_sgid(union ib_gid *sgid, u8 *smac, u16 *vlan_id)
 		struct sockaddr_in6 _sockaddr_in6;
 	} gid_addr;
 
-	ret = rdma_gid2ip(&gid_addr._sockaddr, sgid);
+	rdma_gid2ip(&gid_addr._sockaddr, sgid);
 
-	if (ret)
-		return ret;
 	memset(&dev_addr, 0, sizeof(dev_addr));
 	ret = rdma_translate_ip(&gid_addr._sockaddr, &dev_addr, vlan_id);
 	if (ret)

drivers/infiniband/core/cm.c

@@ -437,39 +437,38 @@ static struct cm_id_private * cm_acquire_id(__be32 local_id, __be32 remote_id)
 	return cm_id_priv;
 }
 
-static void cm_mask_copy(u8 *dst, u8 *src, u8 *mask)
+static void cm_mask_copy(u32 *dst, const u32 *src, const u32 *mask)
 {
 	int i;
 
-	for (i = 0; i < IB_CM_COMPARE_SIZE / sizeof(unsigned long); i++)
+	for (i = 0; i < IB_CM_COMPARE_SIZE; i++)
-		((unsigned long *) dst)[i] = ((unsigned long *) src)[i] &
+		dst[i] = src[i] & mask[i];
-					     ((unsigned long *) mask)[i];
 }
 
 static int cm_compare_data(struct ib_cm_compare_data *src_data,
 			   struct ib_cm_compare_data *dst_data)
 {
-	u8 src[IB_CM_COMPARE_SIZE];
+	u32 src[IB_CM_COMPARE_SIZE];
-	u8 dst[IB_CM_COMPARE_SIZE];
+	u32 dst[IB_CM_COMPARE_SIZE];
 
 	if (!src_data || !dst_data)
 		return 0;
 
 	cm_mask_copy(src, src_data->data, dst_data->mask);
 	cm_mask_copy(dst, dst_data->data, src_data->mask);
-	return memcmp(src, dst, IB_CM_COMPARE_SIZE);
+	return memcmp(src, dst, sizeof(src));
 }
 
-static int cm_compare_private_data(u8 *private_data,
+static int cm_compare_private_data(u32 *private_data,
 				   struct ib_cm_compare_data *dst_data)
 {
-	u8 src[IB_CM_COMPARE_SIZE];
+	u32 src[IB_CM_COMPARE_SIZE];
 
 	if (!dst_data)
 		return 0;
 
 	cm_mask_copy(src, private_data, dst_data->mask);
-	return memcmp(src, dst_data->data, IB_CM_COMPARE_SIZE);
+	return memcmp(src, dst_data->data, sizeof(src));
 }
 
 /*
@@ -538,7 +537,7 @@ static struct cm_id_private * cm_insert_listen(struct cm_id_private *cm_id_priv)
 
 static struct cm_id_private * cm_find_listen(struct ib_device *device,
 					     __be64 service_id,
-					     u8 *private_data)
+					     u32 *private_data)
 {
 	struct rb_node *node = cm.listen_service_table.rb_node;
 	struct cm_id_private *cm_id_priv;
@@ -953,7 +952,7 @@ int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id, __be64 service_mask,
 		cm_mask_copy(cm_id_priv->compare_data->data,
 			     compare_data->data, compare_data->mask);
 		memcpy(cm_id_priv->compare_data->mask, compare_data->mask,
-		       IB_CM_COMPARE_SIZE);
+		       sizeof(compare_data->mask));
 	}
 
 	cm_id->state = IB_CM_LISTEN;

drivers/infiniband/core/cm_msgs.h

@@ -103,7 +103,7 @@ struct cm_req_msg {
 	/* local ACK timeout:5, rsvd:3 */
 	u8 alt_offset139;
 
-	u8 private_data[IB_CM_REQ_PRIVATE_DATA_SIZE];
+	u32 private_data[IB_CM_REQ_PRIVATE_DATA_SIZE / sizeof(u32)];
 
 } __attribute__ ((packed));
 
@@ -801,7 +801,7 @@ struct cm_sidr_req_msg {
 	__be16 rsvd;
 	__be64 service_id;
 
-	u8 private_data[IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE];
+	u32 private_data[IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE / sizeof(u32)];
 } __attribute__ ((packed));
 
 struct cm_sidr_rep_msg {

drivers/infiniband/core/cma.c

@@ -859,19 +859,27 @@ static void cma_save_ib_info(struct rdma_cm_id *id, struct rdma_cm_id *listen_id
 	memcpy(&ib->sib_addr, &path->dgid, 16);
 }
 
+static __be16 ss_get_port(const struct sockaddr_storage *ss)
+{
+	if (ss->ss_family == AF_INET)
+		return ((struct sockaddr_in *)ss)->sin_port;
+	else if (ss->ss_family == AF_INET6)
+		return ((struct sockaddr_in6 *)ss)->sin6_port;
+	BUG();
+}
+
 static void cma_save_ip4_info(struct rdma_cm_id *id, struct rdma_cm_id *listen_id,
 			      struct cma_hdr *hdr)
 {
-	struct sockaddr_in *listen4, *ip4;
+	struct sockaddr_in *ip4;
 
-	listen4 = (struct sockaddr_in *) &listen_id->route.addr.src_addr;
 	ip4 = (struct sockaddr_in *) &id->route.addr.src_addr;
-	ip4->sin_family = listen4->sin_family;
+	ip4->sin_family = AF_INET;
 	ip4->sin_addr.s_addr = hdr->dst_addr.ip4.addr;
-	ip4->sin_port = listen4->sin_port;
+	ip4->sin_port = ss_get_port(&listen_id->route.addr.src_addr);
 
 	ip4 = (struct sockaddr_in *) &id->route.addr.dst_addr;
-	ip4->sin_family = listen4->sin_family;
+	ip4->sin_family = AF_INET;
 	ip4->sin_addr.s_addr = hdr->src_addr.ip4.addr;
 	ip4->sin_port = hdr->port;
 }
@@ -879,16 +887,15 @@ static void cma_save_ip4_info(struct rdma_cm_id *id, struct rdma_cm_id *listen_i
 static void cma_save_ip6_info(struct rdma_cm_id *id, struct rdma_cm_id *listen_id,
 			      struct cma_hdr *hdr)
 {
-	struct sockaddr_in6 *listen6, *ip6;
+	struct sockaddr_in6 *ip6;
 
-	listen6 = (struct sockaddr_in6 *) &listen_id->route.addr.src_addr;
 	ip6 = (struct sockaddr_in6 *) &id->route.addr.src_addr;
-	ip6->sin6_family = listen6->sin6_family;
+	ip6->sin6_family = AF_INET6;
 	ip6->sin6_addr = hdr->dst_addr.ip6;
-	ip6->sin6_port = listen6->sin6_port;
+	ip6->sin6_port = ss_get_port(&listen_id->route.addr.src_addr);
 
 	ip6 = (struct sockaddr_in6 *) &id->route.addr.dst_addr;
-	ip6->sin6_family = listen6->sin6_family;
+	ip6->sin6_family = AF_INET6;
 	ip6->sin6_addr = hdr->src_addr.ip6;
 	ip6->sin6_port = hdr->port;
 }

drivers/infiniband/core/iwpm_msg.c

@@ -468,7 +468,8 @@ add_mapping_response_exit:
 }
 EXPORT_SYMBOL(iwpm_add_mapping_cb);
 
-/* netlink attribute policy for the response to add and query mapping request */
+/* netlink attribute policy for the response to add and query mapping request
+ * and response with remote address info */
 static const struct nla_policy resp_query_policy[IWPM_NLA_RQUERY_MAPPING_MAX] = {
 	[IWPM_NLA_QUERY_MAPPING_SEQ]      = { .type = NLA_U32 },
 	[IWPM_NLA_QUERY_LOCAL_ADDR]       = { .len = sizeof(struct sockaddr_storage) },
@@ -559,6 +560,76 @@ query_mapping_response_exit:
 }
 EXPORT_SYMBOL(iwpm_add_and_query_mapping_cb);
 
+/*
+ * iwpm_remote_info_cb - Process a port mapper message, containing
+ *			  the remote connecting peer address info
+ */
+int iwpm_remote_info_cb(struct sk_buff *skb, struct netlink_callback *cb)
+{
+	struct nlattr *nltb[IWPM_NLA_RQUERY_MAPPING_MAX];
+	struct sockaddr_storage *local_sockaddr, *remote_sockaddr;
+	struct sockaddr_storage *mapped_loc_sockaddr, *mapped_rem_sockaddr;
+	struct iwpm_remote_info *rem_info;
+	const char *msg_type;
+	u8 nl_client;
+	int ret = -EINVAL;
+
+	msg_type = "Remote Mapping info";
+	if (iwpm_parse_nlmsg(cb, IWPM_NLA_RQUERY_MAPPING_MAX,
+				resp_query_policy, nltb, msg_type))
+		return ret;
+
+	nl_client = RDMA_NL_GET_CLIENT(cb->nlh->nlmsg_type);
+	if (!iwpm_valid_client(nl_client)) {
+		pr_info("%s: Invalid port mapper client = %d\n",
+				__func__, nl_client);
+		return ret;
+	}
+	atomic_set(&echo_nlmsg_seq, cb->nlh->nlmsg_seq);
+
+	local_sockaddr = (struct sockaddr_storage *)
+			nla_data(nltb[IWPM_NLA_QUERY_LOCAL_ADDR]);
+	remote_sockaddr = (struct sockaddr_storage *)
+			nla_data(nltb[IWPM_NLA_QUERY_REMOTE_ADDR]);
+	mapped_loc_sockaddr = (struct sockaddr_storage *)
+			nla_data(nltb[IWPM_NLA_RQUERY_MAPPED_LOC_ADDR]);
+	mapped_rem_sockaddr = (struct sockaddr_storage *)
+			nla_data(nltb[IWPM_NLA_RQUERY_MAPPED_REM_ADDR]);
+
+	if (mapped_loc_sockaddr->ss_family != local_sockaddr->ss_family ||
+		mapped_rem_sockaddr->ss_family != remote_sockaddr->ss_family) {
+		pr_info("%s: Sockaddr family doesn't match the requested one\n",
+				__func__);
+		return ret;
+	}
+	rem_info = kzalloc(sizeof(struct iwpm_remote_info), GFP_ATOMIC);
+	if (!rem_info) {
+		pr_err("%s: Unable to allocate a remote info\n", __func__);
+		ret = -ENOMEM;
+		return ret;
+	}
+	memcpy(&rem_info->mapped_loc_sockaddr, mapped_loc_sockaddr,
+	       sizeof(struct sockaddr_storage));
+	memcpy(&rem_info->remote_sockaddr, remote_sockaddr,
+	       sizeof(struct sockaddr_storage));
+	memcpy(&rem_info->mapped_rem_sockaddr, mapped_rem_sockaddr,
+	       sizeof(struct sockaddr_storage));
+	rem_info->nl_client = nl_client;
+
+	iwpm_add_remote_info(rem_info);
+
+	iwpm_print_sockaddr(local_sockaddr,
+			"remote_info: Local sockaddr:");
+	iwpm_print_sockaddr(mapped_loc_sockaddr,
+			"remote_info: Mapped local sockaddr:");
+	iwpm_print_sockaddr(remote_sockaddr,
+			"remote_info: Remote sockaddr:");
+	iwpm_print_sockaddr(mapped_rem_sockaddr,
+			"remote_info: Mapped remote sockaddr:");
+	return ret;
+}
+EXPORT_SYMBOL(iwpm_remote_info_cb);
+
 /* netlink attribute policy for the received request for mapping info */
 static const struct nla_policy resp_mapinfo_policy[IWPM_NLA_MAPINFO_REQ_MAX] = {
 	[IWPM_NLA_MAPINFO_ULIB_NAME] = { .type = NLA_STRING,

drivers/infiniband/core/iwpm_util.c

@@ -33,8 +33,10 @@
 
 #include "iwpm_util.h"
 
-#define IWPM_HASH_BUCKET_SIZE	512
+#define IWPM_MAPINFO_HASH_SIZE	512
-#define IWPM_HASH_BUCKET_MASK	(IWPM_HASH_BUCKET_SIZE - 1)
+#define IWPM_MAPINFO_HASH_MASK	(IWPM_MAPINFO_HASH_SIZE - 1)
+#define IWPM_REMINFO_HASH_SIZE	64
+#define IWPM_REMINFO_HASH_MASK	(IWPM_REMINFO_HASH_SIZE - 1)
 
 static LIST_HEAD(iwpm_nlmsg_req_list);
 static DEFINE_SPINLOCK(iwpm_nlmsg_req_lock);
@@ -42,31 +44,49 @@ static DEFINE_SPINLOCK(iwpm_nlmsg_req_lock);
 static struct hlist_head *iwpm_hash_bucket;
 static DEFINE_SPINLOCK(iwpm_mapinfo_lock);
 
+static struct hlist_head *iwpm_reminfo_bucket;
+static DEFINE_SPINLOCK(iwpm_reminfo_lock);
+
 static DEFINE_MUTEX(iwpm_admin_lock);
 static struct iwpm_admin_data iwpm_admin;
 
 int iwpm_init(u8 nl_client)
 {
+	int ret = 0;
 	if (iwpm_valid_client(nl_client))
 		return -EINVAL;
 	mutex_lock(&iwpm_admin_lock);
 	if (atomic_read(&iwpm_admin.refcount) == 0) {
-		iwpm_hash_bucket = kzalloc(IWPM_HASH_BUCKET_SIZE *
+		iwpm_hash_bucket = kzalloc(IWPM_MAPINFO_HASH_SIZE *
 					sizeof(struct hlist_head), GFP_KERNEL);
 		if (!iwpm_hash_bucket) {
-			mutex_unlock(&iwpm_admin_lock);
+			ret = -ENOMEM;
 			pr_err("%s Unable to create mapinfo hash table\n", __func__);
-			return -ENOMEM;
+			goto init_exit;
+		}
+		iwpm_reminfo_bucket = kzalloc(IWPM_REMINFO_HASH_SIZE *
+					sizeof(struct hlist_head), GFP_KERNEL);
+		if (!iwpm_reminfo_bucket) {
+			kfree(iwpm_hash_bucket);
+			ret = -ENOMEM;
+			pr_err("%s Unable to create reminfo hash table\n", __func__);
+			goto init_exit;
 		}
 	}
 	atomic_inc(&iwpm_admin.refcount);
+init_exit:
 	mutex_unlock(&iwpm_admin_lock);
-	iwpm_set_valid(nl_client, 1);
+	if (!ret) {
-	return 0;
+		iwpm_set_valid(nl_client, 1);
+		pr_debug("%s: Mapinfo and reminfo tables are created\n",
+				__func__);
+	}
+	return ret;
 }
 EXPORT_SYMBOL(iwpm_init);
 
 static void free_hash_bucket(void);
+static void free_reminfo_bucket(void);
 
 int iwpm_exit(u8 nl_client)
 {
@@ -81,7 +101,8 @@ int iwpm_exit(u8 nl_client)
 	}
 	if (atomic_dec_and_test(&iwpm_admin.refcount)) {
 		free_hash_bucket();
-		pr_debug("%s: Mapinfo hash table is destroyed\n", __func__);
+		free_reminfo_bucket();
+		pr_debug("%s: Resources are destroyed\n", __func__);
 	}
 	mutex_unlock(&iwpm_admin_lock);
 	iwpm_set_valid(nl_client, 0);
@@ -89,7 +110,7 @@ int iwpm_exit(u8 nl_client)
 }
 EXPORT_SYMBOL(iwpm_exit);
 
-static struct hlist_head *get_hash_bucket_head(struct sockaddr_storage *,
+static struct hlist_head *get_mapinfo_hash_bucket(struct sockaddr_storage *,
 					       struct sockaddr_storage *);
 
 int iwpm_create_mapinfo(struct sockaddr_storage *local_sockaddr,
@@ -99,9 +120,10 @@ int iwpm_create_mapinfo(struct sockaddr_storage *local_sockaddr,
 	struct hlist_head *hash_bucket_head;
 	struct iwpm_mapping_info *map_info;
 	unsigned long flags;
+	int ret = -EINVAL;
 
 	if (!iwpm_valid_client(nl_client))
-		return -EINVAL;
+		return ret;
 	map_info = kzalloc(sizeof(struct iwpm_mapping_info), GFP_KERNEL);
 	if (!map_info) {
 		pr_err("%s: Unable to allocate a mapping info\n", __func__);
@@ -115,13 +137,16 @@ int iwpm_create_mapinfo(struct sockaddr_storage *local_sockaddr,
 
 	spin_lock_irqsave(&iwpm_mapinfo_lock, flags);
 	if (iwpm_hash_bucket) {
-		hash_bucket_head = get_hash_bucket_head(
+		hash_bucket_head = get_mapinfo_hash_bucket(
 					&map_info->local_sockaddr,
 					&map_info->mapped_sockaddr);
-		hlist_add_head(&map_info->hlist_node, hash_bucket_head);
+		if (hash_bucket_head) {
+			hlist_add_head(&map_info->hlist_node, hash_bucket_head);
+			ret = 0;
+		}
 	}
 	spin_unlock_irqrestore(&iwpm_mapinfo_lock, flags);
-	return 0;
+	return ret;
 }
 EXPORT_SYMBOL(iwpm_create_mapinfo);
 
@@ -136,9 +161,12 @@ int iwpm_remove_mapinfo(struct sockaddr_storage *local_sockaddr,
 
 	spin_lock_irqsave(&iwpm_mapinfo_lock, flags);
 	if (iwpm_hash_bucket) {
-		hash_bucket_head = get_hash_bucket_head(
+		hash_bucket_head = get_mapinfo_hash_bucket(
 					local_sockaddr,
 					mapped_local_addr);
+		if (!hash_bucket_head)
+			goto remove_mapinfo_exit;
+
 		hlist_for_each_entry_safe(map_info, tmp_hlist_node,
 					hash_bucket_head, hlist_node) {
 
@@ -152,6 +180,7 @@ int iwpm_remove_mapinfo(struct sockaddr_storage *local_sockaddr,
 			}
 		}
 	}
+remove_mapinfo_exit:
 	spin_unlock_irqrestore(&iwpm_mapinfo_lock, flags);
 	return ret;
 }
@@ -166,7 +195,7 @@ static void free_hash_bucket(void)
 
 	/* remove all the mapinfo data from the list */
 	spin_lock_irqsave(&iwpm_mapinfo_lock, flags);
-	for (i = 0; i < IWPM_HASH_BUCKET_SIZE; i++) {
+	for (i = 0; i < IWPM_MAPINFO_HASH_SIZE; i++) {
 		hlist_for_each_entry_safe(map_info, tmp_hlist_node,
 			&iwpm_hash_bucket[i], hlist_node) {
 
@@ -180,6 +209,96 @@ static void free_hash_bucket(void)
 	spin_unlock_irqrestore(&iwpm_mapinfo_lock, flags);
 }
 
+static void free_reminfo_bucket(void)
+{
+	struct hlist_node *tmp_hlist_node;
+	struct iwpm_remote_info *rem_info;
+	unsigned long flags;
+	int i;
+
+	/* remove all the remote info from the list */
+	spin_lock_irqsave(&iwpm_reminfo_lock, flags);
+	for (i = 0; i < IWPM_REMINFO_HASH_SIZE; i++) {
+		hlist_for_each_entry_safe(rem_info, tmp_hlist_node,
+			&iwpm_reminfo_bucket[i], hlist_node) {
+
+				hlist_del_init(&rem_info->hlist_node);
+				kfree(rem_info);
+			}
+	}
+	/* free the hash list */
+	kfree(iwpm_reminfo_bucket);
+	iwpm_reminfo_bucket = NULL;
+	spin_unlock_irqrestore(&iwpm_reminfo_lock, flags);
+}
+
+static struct hlist_head *get_reminfo_hash_bucket(struct sockaddr_storage *,
+						struct sockaddr_storage *);
+
+void iwpm_add_remote_info(struct iwpm_remote_info *rem_info)
+{
+	struct hlist_head *hash_bucket_head;
+	unsigned long flags;
+
+	spin_lock_irqsave(&iwpm_reminfo_lock, flags);
+	if (iwpm_reminfo_bucket) {
+		hash_bucket_head = get_reminfo_hash_bucket(
+					&rem_info->mapped_loc_sockaddr,
+					&rem_info->mapped_rem_sockaddr);
+		if (hash_bucket_head)
+			hlist_add_head(&rem_info->hlist_node, hash_bucket_head);
+	}
+	spin_unlock_irqrestore(&iwpm_reminfo_lock, flags);
+}
+
+int iwpm_get_remote_info(struct sockaddr_storage *mapped_loc_addr,
+				struct sockaddr_storage *mapped_rem_addr,
+				struct sockaddr_storage *remote_addr,
+				u8 nl_client)
+{
+	struct hlist_node *tmp_hlist_node;
+	struct hlist_head *hash_bucket_head;
+	struct iwpm_remote_info *rem_info = NULL;
+	unsigned long flags;
+	int ret = -EINVAL;
+
+	if (!iwpm_valid_client(nl_client)) {
+		pr_info("%s: Invalid client = %d\n", __func__, nl_client);
+		return ret;
+	}
+	spin_lock_irqsave(&iwpm_reminfo_lock, flags);
+	if (iwpm_reminfo_bucket) {
+		hash_bucket_head = get_reminfo_hash_bucket(
+					mapped_loc_addr,
+					mapped_rem_addr);
+		if (!hash_bucket_head)
+			goto get_remote_info_exit;
+		hlist_for_each_entry_safe(rem_info, tmp_hlist_node,
+					hash_bucket_head, hlist_node) {
+
+			if (!iwpm_compare_sockaddr(&rem_info->mapped_loc_sockaddr,
+				mapped_loc_addr) &&
+				!iwpm_compare_sockaddr(&rem_info->mapped_rem_sockaddr,
+				mapped_rem_addr)) {
+
+				memcpy(remote_addr, &rem_info->remote_sockaddr,
+					sizeof(struct sockaddr_storage));
+				iwpm_print_sockaddr(remote_addr,
+						"get_remote_info: Remote sockaddr:");
+
+				hlist_del_init(&rem_info->hlist_node);
+				kfree(rem_info);
+				ret = 0;
+				break;
+			}
+		}
+	}
+get_remote_info_exit:
+	spin_unlock_irqrestore(&iwpm_reminfo_lock, flags);
+	return ret;
+}
+EXPORT_SYMBOL(iwpm_get_remote_info);
+
 struct iwpm_nlmsg_request *iwpm_get_nlmsg_request(__u32 nlmsg_seq,
 					u8 nl_client, gfp_t gfp)
 {
@@ -409,31 +528,54 @@ static u32 iwpm_ipv4_jhash(struct sockaddr_in *ipv4_sockaddr)
 	return hash;
 }
 
-static struct hlist_head *get_hash_bucket_head(struct sockaddr_storage
+static int get_hash_bucket(struct sockaddr_storage *a_sockaddr,
-					       *local_sockaddr,
+				struct sockaddr_storage *b_sockaddr, u32 *hash)
-					       struct sockaddr_storage
-					       *mapped_sockaddr)
 {
-	u32 local_hash, mapped_hash, hash;
+	u32 a_hash, b_hash;
 
-	if (local_sockaddr->ss_family == AF_INET) {
+	if (a_sockaddr->ss_family == AF_INET) {
-		local_hash = iwpm_ipv4_jhash((struct sockaddr_in *) local_sockaddr);
+		a_hash = iwpm_ipv4_jhash((struct sockaddr_in *) a_sockaddr);
-		mapped_hash = iwpm_ipv4_jhash((struct sockaddr_in *) mapped_sockaddr);
+		b_hash = iwpm_ipv4_jhash((struct sockaddr_in *) b_sockaddr);
 
-	} else if (local_sockaddr->ss_family == AF_INET6) {
+	} else if (a_sockaddr->ss_family == AF_INET6) {
-		local_hash = iwpm_ipv6_jhash((struct sockaddr_in6 *) local_sockaddr);
+		a_hash = iwpm_ipv6_jhash((struct sockaddr_in6 *) a_sockaddr);
-		mapped_hash = iwpm_ipv6_jhash((struct sockaddr_in6 *) mapped_sockaddr);
+		b_hash = iwpm_ipv6_jhash((struct sockaddr_in6 *) b_sockaddr);
 	} else {
 		pr_err("%s: Invalid sockaddr family\n", __func__);
-		return NULL;
+		return -EINVAL;
 	}
 
-	if (local_hash == mapped_hash) /* if port mapper isn't available */
+	if (a_hash == b_hash) /* if port mapper isn't available */
-		hash = local_hash;
+		*hash = a_hash;
 	else
-		hash = jhash_2words(local_hash, mapped_hash, 0);
+		*hash = jhash_2words(a_hash, b_hash, 0);
+	return 0;
+}
 
-	return &iwpm_hash_bucket[hash & IWPM_HASH_BUCKET_MASK];
+static struct hlist_head *get_mapinfo_hash_bucket(struct sockaddr_storage
+				*local_sockaddr, struct sockaddr_storage
+				*mapped_sockaddr)
+{
+	u32 hash;
+	int ret;
+
+	ret = get_hash_bucket(local_sockaddr, mapped_sockaddr, &hash);
+	if (ret)
+		return NULL;
+	return &iwpm_hash_bucket[hash & IWPM_MAPINFO_HASH_MASK];
+}
+
+static struct hlist_head *get_reminfo_hash_bucket(struct sockaddr_storage
+				*mapped_loc_sockaddr, struct sockaddr_storage
+				*mapped_rem_sockaddr)
+{
+	u32 hash;
+	int ret;
+
+	ret = get_hash_bucket(mapped_loc_sockaddr, mapped_rem_sockaddr, &hash);
+	if (ret)
+		return NULL;
+	return &iwpm_reminfo_bucket[hash & IWPM_REMINFO_HASH_MASK];
 }
 
 static int send_mapinfo_num(u32 mapping_num, u8 nl_client, int iwpm_pid)
@@ -512,7 +654,7 @@ int iwpm_send_mapinfo(u8 nl_client, int iwpm_pid)
 	}
 	skb_num++;
 	spin_lock_irqsave(&iwpm_mapinfo_lock, flags);
-	for (i = 0; i < IWPM_HASH_BUCKET_SIZE; i++) {
+	for (i = 0; i < IWPM_MAPINFO_HASH_SIZE; i++) {
 		hlist_for_each_entry(map_info, &iwpm_hash_bucket[i],
 				     hlist_node) {
 			if (map_info->nl_client != nl_client)
@@ -595,7 +737,7 @@ int iwpm_mapinfo_available(void)
 
 	spin_lock_irqsave(&iwpm_mapinfo_lock, flags);
 	if (iwpm_hash_bucket) {
-		for (i = 0; i < IWPM_HASH_BUCKET_SIZE; i++) {
+		for (i = 0; i < IWPM_MAPINFO_HASH_SIZE; i++) {
 			if (!hlist_empty(&iwpm_hash_bucket[i])) {
 				full_bucket = 1;
 				break;

drivers/infiniband/core/iwpm_util.h

@@ -76,6 +76,14 @@ struct iwpm_mapping_info {
 	u8     nl_client;
 };
 
+struct iwpm_remote_info {
+	struct hlist_node hlist_node;
+	struct sockaddr_storage remote_sockaddr;
+	struct sockaddr_storage mapped_loc_sockaddr;
+	struct sockaddr_storage mapped_rem_sockaddr;
+	u8     nl_client;
+};
+
 struct iwpm_admin_data {
 	atomic_t refcount;
 	atomic_t nlmsg_seq;
@@ -127,6 +135,13 @@ int iwpm_wait_complete_req(struct iwpm_nlmsg_request *nlmsg_request);
  */
 int iwpm_get_nlmsg_seq(void);
 
+/**
+ * iwpm_add_reminfo - Add remote address info of the connecting peer
+ *                    to the remote info hash table
+ * @reminfo: The remote info to be added
+ */
+void iwpm_add_remote_info(struct iwpm_remote_info *reminfo);
+
 /**
  * iwpm_valid_client - Check if the port mapper client is valid
  * @nl_client: The index of the netlink client

drivers/infiniband/core/umem_odp.c

@@ -446,7 +446,6 @@ static int ib_umem_odp_map_dma_single_page(
 	int remove_existing_mapping = 0;
 	int ret = 0;
 
-	mutex_lock(&umem->odp_data->umem_mutex);
 	/*
 	 * Note: we avoid writing if seq is different from the initial seq, to
 	 * handle case of a racing notifier. This check also allows us to bail
@@ -479,8 +478,6 @@ static int ib_umem_odp_map_dma_single_page(
 	}
 
 out:
-	mutex_unlock(&umem->odp_data->umem_mutex);
-
 	/* On Demand Paging - avoid pinning the page */
 	if (umem->context->invalidate_range || !stored_page)
 		put_page(page);
@@ -586,6 +583,7 @@ int ib_umem_odp_map_dma_pages(struct ib_umem *umem, u64 user_virt, u64 bcnt,
 
 		bcnt -= min_t(size_t, npages << PAGE_SHIFT, bcnt);
 		user_virt += npages << PAGE_SHIFT;
+		mutex_lock(&umem->odp_data->umem_mutex);
 		for (j = 0; j < npages; ++j) {
 			ret = ib_umem_odp_map_dma_single_page(
 				umem, k, base_virt_addr, local_page_list[j],
@@ -594,6 +592,7 @@ int ib_umem_odp_map_dma_pages(struct ib_umem *umem, u64 user_virt, u64 bcnt,
 				break;
 			k++;
 		}
+		mutex_unlock(&umem->odp_data->umem_mutex);
 
 		if (ret < 0) {
 			/* Release left over pages when handling errors. */
@@ -633,12 +632,11 @@ void ib_umem_odp_unmap_dma_pages(struct ib_umem *umem, u64 virt,
 	 * faults from completion. We might be racing with other
 	 * invalidations, so we must make sure we free each page only
 	 * once. */
+	mutex_lock(&umem->odp_data->umem_mutex);
 	for (addr = virt; addr < bound; addr += (u64)umem->page_size) {
 		idx = (addr - ib_umem_start(umem)) / PAGE_SIZE;
-		mutex_lock(&umem->odp_data->umem_mutex);
 		if (umem->odp_data->page_list[idx]) {
 			struct page *page = umem->odp_data->page_list[idx];
-			struct page *head_page = compound_head(page);
 			dma_addr_t dma = umem->odp_data->dma_list[idx];
 			dma_addr_t dma_addr = dma & ODP_DMA_ADDR_MASK;
 
@@ -646,7 +644,8 @@ void ib_umem_odp_unmap_dma_pages(struct ib_umem *umem, u64 virt,
 
 			ib_dma_unmap_page(dev, dma_addr, PAGE_SIZE,
 					  DMA_BIDIRECTIONAL);
-			if (dma & ODP_WRITE_ALLOWED_BIT)
+			if (dma & ODP_WRITE_ALLOWED_BIT) {
+				struct page *head_page = compound_head(page);
 				/*
 				 * set_page_dirty prefers being called with
 				 * the page lock. However, MMU notifiers are
@@ -657,13 +656,14 @@ void ib_umem_odp_unmap_dma_pages(struct ib_umem *umem, u64 virt,
 				 * be removed.
 				 */
 				set_page_dirty(head_page);
+			}
 			/* on demand pinning support */
 			if (!umem->context->invalidate_range)
 				put_page(page);
 			umem->odp_data->page_list[idx] = NULL;
 			umem->odp_data->dma_list[idx] = 0;
 		}
-		mutex_unlock(&umem->odp_data->umem_mutex);
 	}
+	mutex_unlock(&umem->odp_data->umem_mutex);
 }
 EXPORT_SYMBOL(ib_umem_odp_unmap_dma_pages);

drivers/infiniband/hw/cxgb4/cm.c

@@ -583,6 +583,22 @@ static void c4iw_record_pm_msg(struct c4iw_ep *ep,
 		sizeof(ep->com.mapped_remote_addr));
 }
 
+static int get_remote_addr(struct c4iw_ep *ep)
+{
+	int ret;
+
+	print_addr(&ep->com, __func__, "get_remote_addr");
+
+	ret = iwpm_get_remote_info(&ep->com.mapped_local_addr,
+				   &ep->com.mapped_remote_addr,
+				   &ep->com.remote_addr, RDMA_NL_C4IW);
+	if (ret)
+		pr_info(MOD "Unable to find remote peer addr info - err %d\n",
+			ret);
+
+	return ret;
+}
+
 static void best_mtu(const unsigned short *mtus, unsigned short mtu,
 		     unsigned int *idx, int use_ts, int ipv6)
 {
@@ -675,7 +691,7 @@ static int send_connect(struct c4iw_ep *ep)
 	if (is_t5(ep->com.dev->rdev.lldi.adapter_type)) {
 		opt2 |= T5_OPT_2_VALID_F;
 		opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE);
-		opt2 |= CONG_CNTRL_VALID; /* OPT_2_ISS for T5 */
+		opt2 |= T5_ISS_F;
 	}
 	t4_set_arp_err_handler(skb, ep, act_open_req_arp_failure);
 
@@ -2042,9 +2058,12 @@ static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
 	     status, status2errno(status));
 
 	if (is_neg_adv(status)) {
-		dev_warn(&dev->rdev.lldi.pdev->dev,
+		PDBG("%s Connection problems for atid %u status %u (%s)\n",
-			 "Connection problems for atid %u status %u (%s)\n",
+		     __func__, atid, status, neg_adv_str(status));
-			 atid, status, neg_adv_str(status));
+		ep->stats.connect_neg_adv++;
+		mutex_lock(&dev->rdev.stats.lock);
+		dev->rdev.stats.neg_adv++;
+		mutex_unlock(&dev->rdev.stats.lock);
 		return 0;
 	}
 
@@ -2214,7 +2233,7 @@ static void accept_cr(struct c4iw_ep *ep, struct sk_buff *skb,
 		u32 isn = (prandom_u32() & ~7UL) - 1;
 		opt2 |= T5_OPT_2_VALID_F;
 		opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE);
-		opt2 |= CONG_CNTRL_VALID; /* OPT_2_ISS for T5 */
+		opt2 |= T5_ISS_F;
 		rpl5 = (void *)rpl;
 		memset(&rpl5->iss, 0, roundup(sizeof(*rpl5)-sizeof(*rpl), 16));
 		if (peer2peer)
@@ -2352,27 +2371,57 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
 	state_set(&child_ep->com, CONNECTING);
 	child_ep->com.dev = dev;
 	child_ep->com.cm_id = NULL;
+
+	/*
+	 * The mapped_local and mapped_remote addresses get setup with
+	 * the actual 4-tuple.  The local address will be based on the
+	 * actual local address of the connection, but on the port number
+	 * of the parent listening endpoint.  The remote address is
+	 * setup based on a query to the IWPM since we don't know what it
+	 * originally was before mapping.  If no mapping was done, then
+	 * mapped_remote == remote, and mapped_local == local.
+	 */
 	if (iptype == 4) {
 		struct sockaddr_in *sin = (struct sockaddr_in *)
-			&child_ep->com.local_addr;
+			&child_ep->com.mapped_local_addr;
+
 		sin->sin_family = PF_INET;
 		sin->sin_port = local_port;
 		sin->sin_addr.s_addr = *(__be32 *)local_ip;
-		sin = (struct sockaddr_in *)&child_ep->com.remote_addr;
+
+		sin = (struct sockaddr_in *)&child_ep->com.local_addr;
+		sin->sin_family = PF_INET;
+		sin->sin_port = ((struct sockaddr_in *)
+				 &parent_ep->com.local_addr)->sin_port;
+		sin->sin_addr.s_addr = *(__be32 *)local_ip;
+
+		sin = (struct sockaddr_in *)&child_ep->com.mapped_remote_addr;
 		sin->sin_family = PF_INET;
 		sin->sin_port = peer_port;
 		sin->sin_addr.s_addr = *(__be32 *)peer_ip;
 	} else {
 		struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)
-			&child_ep->com.local_addr;
+			&child_ep->com.mapped_local_addr;
+
 		sin6->sin6_family = PF_INET6;
 		sin6->sin6_port = local_port;
 		memcpy(sin6->sin6_addr.s6_addr, local_ip, 16);
-		sin6 = (struct sockaddr_in6 *)&child_ep->com.remote_addr;
+
+		sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr;
+		sin6->sin6_family = PF_INET6;
+		sin6->sin6_port = ((struct sockaddr_in6 *)
+				   &parent_ep->com.local_addr)->sin6_port;
+		memcpy(sin6->sin6_addr.s6_addr, local_ip, 16);
+
+		sin6 = (struct sockaddr_in6 *)&child_ep->com.mapped_remote_addr;
 		sin6->sin6_family = PF_INET6;
 		sin6->sin6_port = peer_port;
 		memcpy(sin6->sin6_addr.s6_addr, peer_ip, 16);
 	}
+	memcpy(&child_ep->com.remote_addr, &child_ep->com.mapped_remote_addr,
+	       sizeof(child_ep->com.remote_addr));
+	get_remote_addr(child_ep);
+
 	c4iw_get_ep(&parent_ep->com);
 	child_ep->parent_ep = parent_ep;
 	child_ep->tos = PASS_OPEN_TOS_G(ntohl(req->tos_stid));
@@ -2520,9 +2569,13 @@ static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb)
 
 	ep = lookup_tid(t, tid);
 	if (is_neg_adv(req->status)) {
-		dev_warn(&dev->rdev.lldi.pdev->dev,
+		PDBG("%s Negative advice on abort- tid %u status %d (%s)\n",
-			 "Negative advice on abort - tid %u status %d (%s)\n",
+		     __func__, ep->hwtid, req->status,
-			 ep->hwtid, req->status, neg_adv_str(req->status));
+		     neg_adv_str(req->status));
+		ep->stats.abort_neg_adv++;
+		mutex_lock(&dev->rdev.stats.lock);
+		dev->rdev.stats.neg_adv++;
+		mutex_unlock(&dev->rdev.stats.lock);
 		return 0;
 	}
 	PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid,
@@ -3571,7 +3624,7 @@ static void send_fw_pass_open_req(struct c4iw_dev *dev, struct sk_buff *skb,
 	 * TP will ignore any value > 0 for MSS index.
 	 */
 	req->tcb.opt0 = cpu_to_be64(MSS_IDX_V(0xF));
-	req->cookie = (unsigned long)skb;
+	req->cookie = (uintptr_t)skb;
 
 	set_wr_txq(req_skb, CPL_PRIORITY_CONTROL, port_id);
 	ret = cxgb4_ofld_send(dev->rdev.lldi.ports[0], req_skb);
@@ -3931,9 +3984,11 @@ static int peer_abort_intr(struct c4iw_dev *dev, struct sk_buff *skb)
 		return 0;
 	}
 	if (is_neg_adv(req->status)) {
-		dev_warn(&dev->rdev.lldi.pdev->dev,
+		PDBG("%s Negative advice on abort- tid %u status %d (%s)\n",
-			 "Negative advice on abort - tid %u status %d (%s)\n",
+		     __func__, ep->hwtid, req->status,
-			 ep->hwtid, req->status, neg_adv_str(req->status));
+		     neg_adv_str(req->status));
+		ep->stats.abort_neg_adv++;
+		dev->rdev.stats.neg_adv++;
 		kfree_skb(skb);
 		return 0;
 	}

drivers/infiniband/hw/cxgb4/cq.c

@@ -55,7 +55,7 @@ static int destroy_cq(struct c4iw_rdev *rdev, struct t4_cq *cq,
 			FW_RI_RES_WR_NRES_V(1) |
 			FW_WR_COMPL_F);
 	res_wr->len16_pkd = cpu_to_be32(DIV_ROUND_UP(wr_len, 16));
-	res_wr->cookie = (unsigned long) &wr_wait;
+	res_wr->cookie = (uintptr_t)&wr_wait;
 	res = res_wr->res;
 	res->u.cq.restype = FW_RI_RES_TYPE_CQ;
 	res->u.cq.op = FW_RI_RES_OP_RESET;
@@ -125,7 +125,7 @@ static int create_cq(struct c4iw_rdev *rdev, struct t4_cq *cq,
 			FW_RI_RES_WR_NRES_V(1) |
 			FW_WR_COMPL_F);
 	res_wr->len16_pkd = cpu_to_be32(DIV_ROUND_UP(wr_len, 16));
-	res_wr->cookie = (unsigned long) &wr_wait;
+	res_wr->cookie = (uintptr_t)&wr_wait;
 	res = res_wr->res;
 	res->u.cq.restype = FW_RI_RES_TYPE_CQ;
 	res->u.cq.op = FW_RI_RES_OP_WRITE;
@@ -156,12 +156,19 @@ static int create_cq(struct c4iw_rdev *rdev, struct t4_cq *cq,
 		goto err4;
 
 	cq->gen = 1;
-	cq->gts = rdev->lldi.gts_reg;
 	cq->rdev = rdev;
 	if (user) {
-		cq->ugts = (u64)pci_resource_start(rdev->lldi.pdev, 2) +
+		u32 off = (cq->cqid << rdev->cqshift) & PAGE_MASK;
-					(cq->cqid << rdev->cqshift);
+
-		cq->ugts &= PAGE_MASK;
+		cq->ugts = (u64)rdev->bar2_pa + off;
+	} else if (is_t4(rdev->lldi.adapter_type)) {
+		cq->gts = rdev->lldi.gts_reg;
+		cq->qid_mask = -1U;
+	} else {
+		u32 off = ((cq->cqid << rdev->cqshift) & PAGE_MASK) + 12;
+
+		cq->gts = rdev->bar2_kva + off;
+		cq->qid_mask = rdev->qpmask;
 	}
 	return 0;
 err4:
@@ -970,8 +977,7 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev, int entries,
 	}
 	PDBG("%s cqid 0x%0x chp %p size %u memsize %zu, dma_addr 0x%0llx\n",
 	     __func__, chp->cq.cqid, chp, chp->cq.size,
-	     chp->cq.memsize,
+	     chp->cq.memsize, (unsigned long long) chp->cq.dma_addr);
-	     (unsigned long long) chp->cq.dma_addr);
 	return &chp->ibcq;
 err5:
 	kfree(mm2);

drivers/infiniband/hw/cxgb4/device.c

@@ -93,6 +93,7 @@ static struct ibnl_client_cbs c4iw_nl_cb_table[] = {
 	[RDMA_NL_IWPM_ADD_MAPPING] = {.dump = iwpm_add_mapping_cb},
 	[RDMA_NL_IWPM_QUERY_MAPPING] = {.dump = iwpm_add_and_query_mapping_cb},
 	[RDMA_NL_IWPM_HANDLE_ERR] = {.dump = iwpm_mapping_error_cb},
+	[RDMA_NL_IWPM_REMOTE_INFO] = {.dump = iwpm_remote_info_cb},
 	[RDMA_NL_IWPM_MAPINFO] = {.dump = iwpm_mapping_info_cb},
 	[RDMA_NL_IWPM_MAPINFO_NUM] = {.dump = iwpm_ack_mapping_info_cb}
 };
@@ -151,7 +152,7 @@ static int wr_log_show(struct seq_file *seq, void *v)
 	int prev_ts_set = 0;
 	int idx, end;
 
-#define ts2ns(ts) div64_ul((ts) * dev->rdev.lldi.cclk_ps, 1000)
+#define ts2ns(ts) div64_u64((ts) * dev->rdev.lldi.cclk_ps, 1000)
 
 	idx = atomic_read(&dev->rdev.wr_log_idx) &
 		(dev->rdev.wr_log_size - 1);
@@ -489,6 +490,7 @@ static int stats_show(struct seq_file *seq, void *v)
 		   dev->rdev.stats.act_ofld_conn_fails);
 	seq_printf(seq, "PAS_OFLD_CONN_FAILS: %10llu\n",
 		   dev->rdev.stats.pas_ofld_conn_fails);
+	seq_printf(seq, "NEG_ADV_RCVD: %10llu\n", dev->rdev.stats.neg_adv);
 	seq_printf(seq, "AVAILABLE IRD: %10u\n", dev->avail_ird);
 	return 0;
 }
@@ -560,10 +562,13 @@ static int dump_ep(int id, void *p, void *data)
 		cc = snprintf(epd->buf + epd->pos, space,
 			      "ep %p cm_id %p qp %p state %d flags 0x%lx "
 			      "history 0x%lx hwtid %d atid %d "
+			      "conn_na %u abort_na %u "
 			      "%pI4:%d/%d <-> %pI4:%d/%d\n",
 			      ep, ep->com.cm_id, ep->com.qp,
 			      (int)ep->com.state, ep->com.flags,
 			      ep->com.history, ep->hwtid, ep->atid,
+			      ep->stats.connect_neg_adv,
+			      ep->stats.abort_neg_adv,
 			      &lsin->sin_addr, ntohs(lsin->sin_port),
 			      ntohs(mapped_lsin->sin_port),
 			      &rsin->sin_addr, ntohs(rsin->sin_port),
@@ -581,10 +586,13 @@ static int dump_ep(int id, void *p, void *data)
 		cc = snprintf(epd->buf + epd->pos, space,
 			      "ep %p cm_id %p qp %p state %d flags 0x%lx "
 			      "history 0x%lx hwtid %d atid %d "
+			      "conn_na %u abort_na %u "
 			      "%pI6:%d/%d <-> %pI6:%d/%d\n",
 			      ep, ep->com.cm_id, ep->com.qp,
 			      (int)ep->com.state, ep->com.flags,
 			      ep->com.history, ep->hwtid, ep->atid,
+			      ep->stats.connect_neg_adv,
+			      ep->stats.abort_neg_adv,
 			      &lsin6->sin6_addr, ntohs(lsin6->sin6_port),
 			      ntohs(mapped_lsin6->sin6_port),
 			      &rsin6->sin6_addr, ntohs(rsin6->sin6_port),
@@ -764,6 +772,29 @@ static int c4iw_rdev_open(struct c4iw_rdev *rdev)
 
 	c4iw_init_dev_ucontext(rdev, &rdev->uctx);
 
+	/*
+	 * This implementation assumes udb_density == ucq_density!  Eventually
+	 * we might need to support this but for now fail the open. Also the
+	 * cqid and qpid range must match for now.
+	 */
+	if (rdev->lldi.udb_density != rdev->lldi.ucq_density) {
+		pr_err(MOD "%s: unsupported udb/ucq densities %u/%u\n",
+		       pci_name(rdev->lldi.pdev), rdev->lldi.udb_density,
+		       rdev->lldi.ucq_density);
+		err = -EINVAL;
+		goto err1;
+	}
+	if (rdev->lldi.vr->qp.start != rdev->lldi.vr->cq.start ||
+	    rdev->lldi.vr->qp.size != rdev->lldi.vr->cq.size) {
+		pr_err(MOD "%s: unsupported qp and cq id ranges "
+		       "qp start %u size %u cq start %u size %u\n",
+		       pci_name(rdev->lldi.pdev), rdev->lldi.vr->qp.start,
+		       rdev->lldi.vr->qp.size, rdev->lldi.vr->cq.size,
+		       rdev->lldi.vr->cq.size);
+		err = -EINVAL;
+		goto err1;
+	}
+
 	/*
 	 * qpshift is the number of bits to shift the qpid left in order
 	 * to get the correct address of the doorbell for that qp.
@@ -784,10 +815,10 @@ static int c4iw_rdev_open(struct c4iw_rdev *rdev)
 	     rdev->lldi.vr->qp.size,
 	     rdev->lldi.vr->cq.start,
 	     rdev->lldi.vr->cq.size);
-	PDBG("udb len 0x%x udb base %llx db_reg %p gts_reg %p qpshift %lu "
+	PDBG("udb len 0x%x udb base %p db_reg %p gts_reg %p qpshift %lu "
 	     "qpmask 0x%x cqshift %lu cqmask 0x%x\n",
 	     (unsigned)pci_resource_len(rdev->lldi.pdev, 2),
-	     (u64)pci_resource_start(rdev->lldi.pdev, 2),
+	     (void *)pci_resource_start(rdev->lldi.pdev, 2),
 	     rdev->lldi.db_reg,
 	     rdev->lldi.gts_reg,
 	     rdev->qpshift, rdev->qpmask,

drivers/infiniband/hw/cxgb4/iw_cxgb4.h

@@ -137,6 +137,7 @@ struct c4iw_stats {
 	u64  tcam_full;
 	u64  act_ofld_conn_fails;
 	u64  pas_ofld_conn_fails;
+	u64  neg_adv;
 };
 
 struct c4iw_hw_queue {
@@ -814,6 +815,11 @@ struct c4iw_listen_ep {
 	int backlog;
 };
 
+struct c4iw_ep_stats {
+	unsigned connect_neg_adv;
+	unsigned abort_neg_adv;
+};
+
 struct c4iw_ep {
 	struct c4iw_ep_common com;
 	struct c4iw_ep *parent_ep;
@@ -846,6 +852,7 @@ struct c4iw_ep {
 	unsigned int retry_count;
 	int snd_win;
 	int rcv_win;
+	struct c4iw_ep_stats stats;
 };
 
 static inline void print_addr(struct c4iw_ep_common *epc, const char *func,

drivers/infiniband/hw/cxgb4/mem.c

@@ -144,7 +144,7 @@ static int _c4iw_write_mem_inline(struct c4iw_rdev *rdev, u32 addr, u32 len,
 		if (i == (num_wqe-1)) {
 			req->wr.wr_hi = cpu_to_be32(FW_WR_OP_V(FW_ULPTX_WR) |
 						    FW_WR_COMPL_F);
-			req->wr.wr_lo = (__force __be64)(unsigned long) &wr_wait;
+			req->wr.wr_lo = (__force __be64)&wr_wait;
 		} else
 			req->wr.wr_hi = cpu_to_be32(FW_WR_OP_V(FW_ULPTX_WR));
 		req->wr.wr_mid = cpu_to_be32(
@@ -676,12 +676,12 @@ struct ib_mr *c4iw_get_dma_mr(struct ib_pd *pd, int acc)
 	mhp->attr.zbva = 0;
 	mhp->attr.va_fbo = 0;
 	mhp->attr.page_size = 0;
-	mhp->attr.len = ~0UL;
+	mhp->attr.len = ~0ULL;
 	mhp->attr.pbl_size = 0;
 
 	ret = write_tpt_entry(&rhp->rdev, 0, &stag, 1, php->pdid,
 			      FW_RI_STAG_NSMR, mhp->attr.perms,
-			      mhp->attr.mw_bind_enable, 0, 0, ~0UL, 0, 0, 0);
+			      mhp->attr.mw_bind_enable, 0, 0, ~0ULL, 0, 0, 0);
 	if (ret)
 		goto err1;
 

drivers/infiniband/hw/cxgb4/qp.c

@@ -275,7 +275,7 @@ static int create_qp(struct c4iw_rdev *rdev, struct t4_wq *wq,
 			FW_RI_RES_WR_NRES_V(2) |
 			FW_WR_COMPL_F);
 	res_wr->len16_pkd = cpu_to_be32(DIV_ROUND_UP(wr_len, 16));
-	res_wr->cookie = (unsigned long) &wr_wait;
+	res_wr->cookie = (uintptr_t)&wr_wait;
 	res = res_wr->res;
 	res->u.sqrq.restype = FW_RI_RES_TYPE_SQ;
 	res->u.sqrq.op = FW_RI_RES_OP_WRITE;
@@ -1209,7 +1209,7 @@ static int rdma_fini(struct c4iw_dev *rhp, struct c4iw_qp *qhp,
 	wqe->flowid_len16 = cpu_to_be32(
 		FW_WR_FLOWID_V(ep->hwtid) |
 		FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*wqe), 16)));
-	wqe->cookie = (unsigned long) &ep->com.wr_wait;
+	wqe->cookie = (uintptr_t)&ep->com.wr_wait;
 
 	wqe->u.fini.type = FW_RI_TYPE_FINI;
 	ret = c4iw_ofld_send(&rhp->rdev, skb);
@@ -1279,7 +1279,7 @@ static int rdma_init(struct c4iw_dev *rhp, struct c4iw_qp *qhp)
 		FW_WR_FLOWID_V(qhp->ep->hwtid) |
 		FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*wqe), 16)));
 
-	wqe->cookie = (unsigned long) &qhp->ep->com.wr_wait;
+	wqe->cookie = (uintptr_t)&qhp->ep->com.wr_wait;
 
 	wqe->u.init.type = FW_RI_TYPE_INIT;
 	wqe->u.init.mpareqbit_p2ptype =
@@ -1766,11 +1766,11 @@ struct ib_qp *c4iw_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *attrs,
 		mm2->len = PAGE_ALIGN(qhp->wq.rq.memsize);
 		insert_mmap(ucontext, mm2);
 		mm3->key = uresp.sq_db_gts_key;
-		mm3->addr = (__force unsigned long) qhp->wq.sq.udb;
+		mm3->addr = (__force unsigned long)qhp->wq.sq.udb;
 		mm3->len = PAGE_SIZE;
 		insert_mmap(ucontext, mm3);
 		mm4->key = uresp.rq_db_gts_key;
-		mm4->addr = (__force unsigned long) qhp->wq.rq.udb;
+		mm4->addr = (__force unsigned long)qhp->wq.rq.udb;
 		mm4->len = PAGE_SIZE;
 		insert_mmap(ucontext, mm4);
 		if (mm5) {

drivers/infiniband/hw/cxgb4/t4.h

@@ -539,6 +539,7 @@ struct t4_cq {
 	size_t memsize;
 	__be64 bits_type_ts;
 	u32 cqid;
+	u32 qid_mask;
 	int vector;
 	u16 size; /* including status page */
 	u16 cidx;
@@ -563,12 +564,12 @@ static inline int t4_arm_cq(struct t4_cq *cq, int se)
 	set_bit(CQ_ARMED, &cq->flags);
 	while (cq->cidx_inc > CIDXINC_M) {
 		val = SEINTARM_V(0) | CIDXINC_V(CIDXINC_M) | TIMERREG_V(7) |
-		      INGRESSQID_V(cq->cqid);
+		      INGRESSQID_V(cq->cqid & cq->qid_mask);
 		writel(val, cq->gts);
 		cq->cidx_inc -= CIDXINC_M;
 	}
 	val = SEINTARM_V(se) | CIDXINC_V(cq->cidx_inc) | TIMERREG_V(6) |
-	      INGRESSQID_V(cq->cqid);
+	      INGRESSQID_V(cq->cqid & cq->qid_mask);
 	writel(val, cq->gts);
 	cq->cidx_inc = 0;
 	return 0;
@@ -601,7 +602,7 @@ static inline void t4_hwcq_consume(struct t4_cq *cq)
 		u32 val;
 
 		val = SEINTARM_V(0) | CIDXINC_V(cq->cidx_inc) | TIMERREG_V(7) |
-		      INGRESSQID_V(cq->cqid);
+		      INGRESSQID_V(cq->cqid & cq->qid_mask);
 		writel(val, cq->gts);
 		cq->cidx_inc = 0;
 	}

drivers/infiniband/hw/cxgb4/t4fw_ri_api.h

@@ -848,6 +848,8 @@ enum {                     /* TCP congestion control algorithms */
 #define CONG_CNTRL_V(x) ((x) << CONG_CNTRL_S)
 #define CONG_CNTRL_G(x) (((x) >> CONG_CNTRL_S) & CONG_CNTRL_M)
 
-#define CONG_CNTRL_VALID   (1 << 18)
+#define T5_ISS_S    18
+#define T5_ISS_V(x) ((x) << T5_ISS_S)
+#define T5_ISS_F    T5_ISS_V(1U)
 
 #endif /* _T4FW_RI_API_H_ */

drivers/infiniband/hw/nes/nes.c

@@ -116,6 +116,7 @@ static struct ibnl_client_cbs nes_nl_cb_table[] = {
 	[RDMA_NL_IWPM_REG_PID] = {.dump = iwpm_register_pid_cb},
 	[RDMA_NL_IWPM_ADD_MAPPING] = {.dump = iwpm_add_mapping_cb},
 	[RDMA_NL_IWPM_QUERY_MAPPING] = {.dump = iwpm_add_and_query_mapping_cb},
+	[RDMA_NL_IWPM_REMOTE_INFO] = {.dump = iwpm_remote_info_cb},
 	[RDMA_NL_IWPM_HANDLE_ERR] = {.dump = iwpm_mapping_error_cb},
 	[RDMA_NL_IWPM_MAPINFO] = {.dump = iwpm_mapping_info_cb},
 	[RDMA_NL_IWPM_MAPINFO_NUM] = {.dump = iwpm_ack_mapping_info_cb}

drivers/infiniband/hw/nes/nes_cm.c

@@ -596,27 +596,52 @@ static void nes_form_reg_msg(struct nes_vnic *nesvnic,
 	memcpy(pm_msg->if_name, nesvnic->netdev->name, IWPM_IFNAME_SIZE);
 }
 
+static void record_sockaddr_info(struct sockaddr_storage *addr_info,
+					nes_addr_t *ip_addr, u16 *port_num)
+{
+	struct sockaddr_in *in_addr = (struct sockaddr_in *)addr_info;
+
+	if (in_addr->sin_family == AF_INET) {
+		*ip_addr = ntohl(in_addr->sin_addr.s_addr);
+		*port_num = ntohs(in_addr->sin_port);
+	}
+}
+
 /*
  * nes_record_pm_msg - Save the received mapping info
  */
 static void nes_record_pm_msg(struct nes_cm_info *cm_info,
 			struct iwpm_sa_data *pm_msg)
 {
-	struct sockaddr_in *mapped_loc_addr =
+	record_sockaddr_info(&pm_msg->mapped_loc_addr,
-			(struct sockaddr_in *)&pm_msg->mapped_loc_addr;
+		&cm_info->mapped_loc_addr, &cm_info->mapped_loc_port);
-	struct sockaddr_in *mapped_rem_addr =
-			(struct sockaddr_in *)&pm_msg->mapped_rem_addr;
 
-	if (mapped_loc_addr->sin_family == AF_INET) {
+	record_sockaddr_info(&pm_msg->mapped_rem_addr,
-		cm_info->mapped_loc_addr =
+		&cm_info->mapped_rem_addr, &cm_info->mapped_rem_port);
-			ntohl(mapped_loc_addr->sin_addr.s_addr);
+}
-		cm_info->mapped_loc_port = ntohs(mapped_loc_addr->sin_port);
+
-	}
+/*
-	if (mapped_rem_addr->sin_family == AF_INET) {
+ * nes_get_reminfo - Get the address info of the remote connecting peer
-		cm_info->mapped_rem_addr =
+ */
-			ntohl(mapped_rem_addr->sin_addr.s_addr);
+static int nes_get_remote_addr(struct nes_cm_node *cm_node)
-		cm_info->mapped_rem_port = ntohs(mapped_rem_addr->sin_port);
+{
-	}
+	struct sockaddr_storage mapped_loc_addr, mapped_rem_addr;
+	struct sockaddr_storage remote_addr;
+	int ret;
+
+	nes_create_sockaddr(htonl(cm_node->mapped_loc_addr),
+			htons(cm_node->mapped_loc_port), &mapped_loc_addr);
+	nes_create_sockaddr(htonl(cm_node->mapped_rem_addr),
+			htons(cm_node->mapped_rem_port), &mapped_rem_addr);
+
+	ret = iwpm_get_remote_info(&mapped_loc_addr, &mapped_rem_addr,
+				&remote_addr, RDMA_NL_NES);
+	if (ret)
+		nes_debug(NES_DBG_CM, "Unable to find remote peer address info\n");
+	else
+		record_sockaddr_info(&remote_addr, &cm_node->rem_addr,
+				&cm_node->rem_port);
+	return ret;
 }
 
 /**
@@ -1566,9 +1591,14 @@ static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core,
 		return NULL;
 
 	/* set our node specific transport info */
-	cm_node->loc_addr = cm_info->loc_addr;
+	if (listener) {
+		cm_node->loc_addr = listener->loc_addr;
+		cm_node->loc_port = listener->loc_port;
+	} else {
+		cm_node->loc_addr = cm_info->loc_addr;
+		cm_node->loc_port = cm_info->loc_port;
+	}
 	cm_node->rem_addr = cm_info->rem_addr;
-	cm_node->loc_port = cm_info->loc_port;
 	cm_node->rem_port = cm_info->rem_port;
 
 	cm_node->mapped_loc_addr = cm_info->mapped_loc_addr;
@@ -2151,6 +2181,7 @@ static int handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
 		cm_node->state = NES_CM_STATE_ESTABLISHED;
 		if (datasize) {
 			cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
+			nes_get_remote_addr(cm_node);
 			handle_rcv_mpa(cm_node, skb);
 		} else { /* rcvd ACK only */
 			dev_kfree_skb_any(skb);

drivers/infiniband/hw/qib/qib.h

@@ -1136,7 +1136,6 @@ extern struct qib_devdata *qib_lookup(int unit);
 extern u32 qib_cpulist_count;
 extern unsigned long *qib_cpulist;
 
-extern unsigned qib_wc_pat;
 extern unsigned qib_cc_table_size;
 int qib_init(struct qib_devdata *, int);
 int init_chip_wc_pat(struct qib_devdata *dd, u32);

drivers/infiniband/hw/qib/qib_file_ops.c

@@ -835,7 +835,8 @@ static int mmap_piobufs(struct vm_area_struct *vma,
 	vma->vm_flags &= ~VM_MAYREAD;
 	vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
 
-	if (qib_wc_pat)
+	/* We used PAT if wc_cookie == 0 */
+	if (!dd->wc_cookie)
 		vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 
 	ret = io_remap_pfn_range(vma, vma->vm_start, phys >> PAGE_SHIFT,

drivers/infiniband/hw/qib/qib_iba6120.c

@@ -3315,11 +3315,9 @@ static int init_6120_variables(struct qib_devdata *dd)
 	qib_6120_config_ctxts(dd);
 	qib_set_ctxtcnt(dd);
 
-	if (qib_wc_pat) {
+	ret = init_chip_wc_pat(dd, 0);
-		ret = init_chip_wc_pat(dd, 0);
+	if (ret)
-		if (ret)
+		goto bail;
-			goto bail;
-	}
 	set_6120_baseaddrs(dd); /* set chip access pointers now */
 
 	ret = 0;

drivers/infiniband/hw/qib/qib_iba7220.c

@@ -4126,11 +4126,9 @@ static int qib_init_7220_variables(struct qib_devdata *dd)
 	qib_7220_config_ctxts(dd);
 	qib_set_ctxtcnt(dd);  /* needed for PAT setup */
 
-	if (qib_wc_pat) {
+	ret = init_chip_wc_pat(dd, 0);
-		ret = init_chip_wc_pat(dd, 0);
+	if (ret)
-		if (ret)
+		goto bail;
-			goto bail;
-	}
 	set_7220_baseaddrs(dd); /* set chip access pointers now */
 
 	ret = 0;

drivers/infiniband/hw/qib/qib_iba7322.c

@@ -6429,6 +6429,7 @@ static int qib_init_7322_variables(struct qib_devdata *dd)
 	unsigned features, pidx, sbufcnt;
 	int ret, mtu;
 	u32 sbufs, updthresh;
+	resource_size_t vl15off;
 
 	/* pport structs are contiguous, allocated after devdata */
 	ppd = (struct qib_pportdata *)(dd + 1);
@@ -6677,29 +6678,27 @@ static int qib_init_7322_variables(struct qib_devdata *dd)
 	qib_7322_config_ctxts(dd);
 	qib_set_ctxtcnt(dd);
 
-	if (qib_wc_pat) {
+	/*
-		resource_size_t vl15off;
+	 * We do not set WC on the VL15 buffers to avoid
-		/*
+	 * a rare problem with unaligned writes from
-		 * We do not set WC on the VL15 buffers to avoid
+	 * interrupt-flushed store buffers, so we need
-		 * a rare problem with unaligned writes from
+	 * to map those separately here.  We can't solve
-		 * interrupt-flushed store buffers, so we need
+	 * this for the rarely used mtrr case.
-		 * to map those separately here.  We can't solve
+	 */
-		 * this for the rarely used mtrr case.
+	ret = init_chip_wc_pat(dd, 0);
-		 */
+	if (ret)
-		ret = init_chip_wc_pat(dd, 0);
+		goto bail;
-		if (ret)
-			goto bail;
 
-		/* vl15 buffers start just after the 4k buffers */
+	/* vl15 buffers start just after the 4k buffers */
-		vl15off = dd->physaddr + (dd->piobufbase >> 32) +
+	vl15off = dd->physaddr + (dd->piobufbase >> 32) +
-			dd->piobcnt4k * dd->align4k;
+		  dd->piobcnt4k * dd->align4k;
-		dd->piovl15base	= ioremap_nocache(vl15off,
+	dd->piovl15base	= ioremap_nocache(vl15off,
-						  NUM_VL15_BUFS * dd->align4k);
+					  NUM_VL15_BUFS * dd->align4k);
-		if (!dd->piovl15base) {
+	if (!dd->piovl15base) {
-			ret = -ENOMEM;
+		ret = -ENOMEM;
-			goto bail;
+		goto bail;
-		}
 	}
+
 	qib_7322_set_baseaddrs(dd); /* set chip access pointers now */
 
 	ret = 0;

drivers/infiniband/hw/qib/qib_init.c

@@ -91,15 +91,6 @@ MODULE_PARM_DESC(krcvqs, "number of kernel receive queues per IB port");
 unsigned qib_cc_table_size;
 module_param_named(cc_table_size, qib_cc_table_size, uint, S_IRUGO);
 MODULE_PARM_DESC(cc_table_size, "Congestion control table entries 0 (CCA disabled - default), min = 128, max = 1984");
-/*
- * qib_wc_pat parameter:
- *      0 is WC via MTRR
- *      1 is WC via PAT
- *      If PAT initialization fails, code reverts back to MTRR
- */
-unsigned qib_wc_pat = 1; /* default (1) is to use PAT, not MTRR */
-module_param_named(wc_pat, qib_wc_pat, uint, S_IRUGO);
-MODULE_PARM_DESC(wc_pat, "enable write-combining via PAT mechanism");
 
 static void verify_interrupt(unsigned long);
 
@@ -1377,8 +1368,7 @@ static void cleanup_device_data(struct qib_devdata *dd)
 		spin_unlock(&dd->pport[pidx].cc_shadow_lock);
 	}
 
-	if (!qib_wc_pat)
+	qib_disable_wc(dd);
-		qib_disable_wc(dd);
 
 	if (dd->pioavailregs_dma) {
 		dma_free_coherent(&dd->pcidev->dev, PAGE_SIZE,
@@ -1547,14 +1537,12 @@ static int qib_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 		goto bail;
 	}
 
-	if (!qib_wc_pat) {
+	ret = qib_enable_wc(dd);
-		ret = qib_enable_wc(dd);
+	if (ret) {
-		if (ret) {
+		qib_dev_err(dd,
-			qib_dev_err(dd,
+			"Write combining not enabled (err %d): performance may be poor\n",
-				"Write combining not enabled (err %d): performance may be poor\n",
+			-ret);
-				-ret);
+		ret = 0;
-			ret = 0;
-		}
 	}
 
 	qib_verify_pioperf(dd);

drivers/infiniband/hw/qib/qib_wc_x86_64.c

@@ -116,21 +116,9 @@ int qib_enable_wc(struct qib_devdata *dd)
 	}
 
 	if (!ret) {
-		int cookie;
+		dd->wc_cookie = arch_phys_wc_add(pioaddr, piolen);
-
+		if (dd->wc_cookie < 0)
-		cookie = mtrr_add(pioaddr, piolen, MTRR_TYPE_WRCOMB, 0);
+			ret = -EINVAL;
-		if (cookie < 0) {
-			{
-				qib_devinfo(dd->pcidev,
-					 "mtrr_add()  WC for PIO bufs failed (%d)\n",
-					 cookie);
-				ret = -EINVAL;
-			}
-		} else {
-			dd->wc_cookie = cookie;
-			dd->wc_base = (unsigned long) pioaddr;
-			dd->wc_len = (unsigned long) piolen;
-		}
 	}
 
 	return ret;
@@ -142,18 +130,7 @@ int qib_enable_wc(struct qib_devdata *dd)
  */
 void qib_disable_wc(struct qib_devdata *dd)
 {
-	if (dd->wc_cookie) {
+	arch_phys_wc_del(dd->wc_cookie);
-		int r;
-
-		r = mtrr_del(dd->wc_cookie, dd->wc_base,
-			     dd->wc_len);
-		if (r < 0)
-			qib_devinfo(dd->pcidev,
-				 "mtrr_del(%lx, %lx, %lx) failed: %d\n",
-				 dd->wc_cookie, dd->wc_base,
-				 dd->wc_len, r);
-		dd->wc_cookie = 0; /* even on failure */
-	}
 }
 
 /**

drivers/infiniband/ulp/ipoib/ipoib_cm.c

@@ -386,8 +386,8 @@ static int ipoib_cm_nonsrq_init_rx(struct net_device *dev, struct ib_cm_id *cm_i
 					   rx->rx_ring[i].mapping,
 					   GFP_KERNEL)) {
 			ipoib_warn(priv, "failed to allocate receive buffer %d\n", i);
-				ret = -ENOMEM;
+			ret = -ENOMEM;
-				goto err_count;
+			goto err_count;
 		}
 		ret = ipoib_cm_post_receive_nonsrq(dev, rx, &t->wr, t->sge, i);
 		if (ret) {

include/rdma/ib_addr.h

@@ -160,7 +160,7 @@ static inline int rdma_ip2gid(struct sockaddr *addr, union ib_gid *gid)
 }
 
 /* Important - sockaddr should be a union of sockaddr_in and sockaddr_in6 */
-static inline int rdma_gid2ip(struct sockaddr *out, union ib_gid *gid)
+static inline void rdma_gid2ip(struct sockaddr *out, union ib_gid *gid)
 {
 	if (ipv6_addr_v4mapped((struct in6_addr *)gid)) {
 		struct sockaddr_in *out_in = (struct sockaddr_in *)out;
@@ -173,7 +173,6 @@ static inline int rdma_gid2ip(struct sockaddr *out, union ib_gid *gid)
 		out_in->sin6_family = AF_INET6;
 		memcpy(&out_in->sin6_addr.s6_addr, gid->raw, 16);
 	}
-	return 0;
 }
 
 static inline void iboe_addr_get_sgid(struct rdma_dev_addr *dev_addr,

include/rdma/ib_cm.h

@@ -105,7 +105,8 @@ enum ib_cm_data_size {
 	IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE = 216,
 	IB_CM_SIDR_REP_PRIVATE_DATA_SIZE = 136,
 	IB_CM_SIDR_REP_INFO_LENGTH	 = 72,
-	IB_CM_COMPARE_SIZE		 = 64
+	/* compare done u32 at a time */
+	IB_CM_COMPARE_SIZE		 = (64 / sizeof(u32))
 };
 
 struct ib_cm_id;
@@ -337,8 +338,8 @@ void ib_destroy_cm_id(struct ib_cm_id *cm_id);
 #define IB_SDP_SERVICE_ID_MASK	cpu_to_be64(0xFFFFFFFFFFFF0000ULL)
 
 struct ib_cm_compare_data {
-	u8  data[IB_CM_COMPARE_SIZE];
+	u32  data[IB_CM_COMPARE_SIZE];
-	u8  mask[IB_CM_COMPARE_SIZE];
+	u32  mask[IB_CM_COMPARE_SIZE];
 };
 
 /**

include/rdma/iw_portmap.h

@@ -147,6 +147,16 @@ int iwpm_add_mapping_cb(struct sk_buff *, struct netlink_callback *);
  */
 int iwpm_add_and_query_mapping_cb(struct sk_buff *, struct netlink_callback *);
 
+/**
+ * iwpm_remote_info_cb - Process remote connecting peer address info, which
+ *                       the port mapper has received from the connecting peer
+ *
+ * @cb: Contains the received message (payload and netlink header)
+ *
+ * Stores the IPv4/IPv6 address info in a hash table
+ */
+int iwpm_remote_info_cb(struct sk_buff *, struct netlink_callback *);
+
 /**
  * iwpm_mapping_error_cb - Process port mapper notification for error
  *
@@ -174,6 +184,21 @@ int iwpm_mapping_info_cb(struct sk_buff *, struct netlink_callback *);
  */
 int iwpm_ack_mapping_info_cb(struct sk_buff *, struct netlink_callback *);
 
+/**
+ * iwpm_get_remote_info - Get the remote connecting peer address info
+ *
+ * @mapped_loc_addr: Mapped local address of the listening peer
+ * @mapped_rem_addr: Mapped remote address of the connecting peer
+ * @remote_addr: To store the remote address of the connecting peer
+ * @nl_client: The index of the netlink client
+ *
+ * The remote address info is retrieved and provided to the client in
+ * the remote_addr. After that it is removed from the hash table
+ */
+int iwpm_get_remote_info(struct sockaddr_storage *mapped_loc_addr,
+			struct sockaddr_storage *mapped_rem_addr,
+			struct sockaddr_storage *remote_addr, u8 nl_client);
+
 /**
  * iwpm_create_mapinfo - Store local and mapped IPv4/IPv6 address
  *                       info in a hash table

include/uapi/rdma/rdma_netlink.h

@@ -37,6 +37,7 @@ enum {
 	RDMA_NL_IWPM_ADD_MAPPING,
 	RDMA_NL_IWPM_QUERY_MAPPING,
 	RDMA_NL_IWPM_REMOVE_MAPPING,
+	RDMA_NL_IWPM_REMOTE_INFO,
 	RDMA_NL_IWPM_HANDLE_ERR,
 	RDMA_NL_IWPM_MAPINFO,
 	RDMA_NL_IWPM_MAPINFO_NUM,