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

31 files changed, 568 insertions, 219 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index b399b34a2496..19395134063d 100644
--- a/MAINTAINERS
+++ b/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>
diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index f80da50d84a5..38339d220d7f 100644
--- a/drivers/infiniband/core/addr.c
+++ b/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);
-        if (ret)
-                return ret;
-
-        ret = rdma_gid2ip(&dgid_addr._sockaddr, dgid);
-        if (ret)
-                return ret;
+        rdma_gid2ip(&sgid_addr._sockaddr, sgid);
+        rdma_gid2ip(&dgid_addr._sockaddr, dgid);
 
         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)
diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index e28a494e2a3a..0c1419105ff0 100644
--- a/drivers/infiniband/core/cm.c
+++ b/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++)
-                ((unsigned long *) dst)[i] = ((unsigned long *) src)[i] &
-                                             ((unsigned long *) mask)[i];
+        for (i = 0; i < IB_CM_COMPARE_SIZE; i++)
+                dst[i] = src[i] & 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];
-        u8 dst[IB_CM_COMPARE_SIZE];
+        u32 src[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;
diff --git a/drivers/infiniband/core/cm_msgs.h b/drivers/infiniband/core/cm_msgs.h
index be068f47e47e..8b76f0ef965e 100644
--- a/drivers/infiniband/core/cm_msgs.h
+++ b/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 {
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index d570030d899c..06441a43c3aa 100644
--- a/drivers/infiniband/core/cma.c
+++ b/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;
 }
diff --git a/drivers/infiniband/core/iwpm_msg.c b/drivers/infiniband/core/iwpm_msg.c
index b85ddbc979e0..ab081702566f 100644
--- a/drivers/infiniband/core/iwpm_msg.c
+++ b/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,
diff --git a/drivers/infiniband/core/iwpm_util.c b/drivers/infiniband/core/iwpm_util.c
index 69e9f84c1605..a626795bf9c7 100644
--- a/drivers/infiniband/core/iwpm_util.c
+++ b/drivers/infiniband/core/iwpm_util.c
@@ -33,8 +33,10 @@
 
 #include "iwpm_util.h"
 
-#define IWPM_HASH_BUCKET_SIZE   512
-#define IWPM_HASH_BUCKET_MASK   (IWPM_HASH_BUCKET_SIZE - 1)
+#define IWPM_MAPINFO_HASH_SIZE  512
+#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);
-        return 0;
+        if (!ret) {
+                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
-                                               *local_sockaddr,
-                                               struct sockaddr_storage
-                                               *mapped_sockaddr)
+static int get_hash_bucket(struct sockaddr_storage *a_sockaddr,
+                                struct sockaddr_storage *b_sockaddr, u32 *hash)
 {
-        u32 local_hash, mapped_hash, hash;
+        u32 a_hash, b_hash;
 
-        if (local_sockaddr->ss_family == AF_INET) {
-                local_hash = iwpm_ipv4_jhash((struct sockaddr_in *) local_sockaddr);
-                mapped_hash = iwpm_ipv4_jhash((struct sockaddr_in *) mapped_sockaddr);
+        if (a_sockaddr->ss_family == AF_INET) {
+                a_hash = iwpm_ipv4_jhash((struct sockaddr_in *) a_sockaddr);
+                b_hash = iwpm_ipv4_jhash((struct sockaddr_in *) b_sockaddr);
 
-        } else if (local_sockaddr->ss_family == AF_INET6) {
-                local_hash = iwpm_ipv6_jhash((struct sockaddr_in6 *) local_sockaddr);
-                mapped_hash = iwpm_ipv6_jhash((struct sockaddr_in6 *) mapped_sockaddr);
+        } else if (a_sockaddr->ss_family == AF_INET6) {
+                a_hash = iwpm_ipv6_jhash((struct sockaddr_in6 *) a_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 */
-                hash = local_hash;
+        if (a_hash == b_hash) /* if port mapper isn't available */
+                *hash = a_hash;
         else
-                hash = jhash_2words(local_hash, mapped_hash, 0);
+                *hash = jhash_2words(a_hash, b_hash, 0);
+        return 0;
+}
+
+static struct hlist_head *get_mapinfo_hash_bucket(struct sockaddr_storage
+                                *local_sockaddr, struct sockaddr_storage
+                                *mapped_sockaddr)
+{
+        u32 hash;
+        int ret;
 
-        return &iwpm_hash_bucket[hash & IWPM_HASH_BUCKET_MASK];
+        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;
diff --git a/drivers/infiniband/core/iwpm_util.h b/drivers/infiniband/core/iwpm_util.h
index 9777c869a140..ee2d9ff095be 100644
--- a/drivers/infiniband/core/iwpm_util.h
+++ b/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;
@@ -128,6 +136,13 @@ 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
  *
diff --git a/drivers/infiniband/core/umem_odp.c b/drivers/infiniband/core/umem_odp.c
index 8b8cc6fa0ab0..40becdb3196e 100644
--- a/drivers/infiniband/core/umem_odp.c
+++ b/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);
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index 57176ddd4c50..bb95a6c0477b 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/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,
-                         "Connection problems for atid %u status %u (%s)\n",
-                         atid, status, neg_adv_str(status));
+                PDBG("%s Connection problems for atid %u status %u (%s)\n",
+                     __func__, 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,
-                         "Negative advice on abort - tid %u status %d (%s)\n",
-                         ep->hwtid, req->status, neg_adv_str(req->status));
+                PDBG("%s Negative advice on abort- tid %u status %d (%s)\n",
+                     __func__, ep->hwtid, 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,
-                         "Negative advice on abort - tid %u status %d (%s)\n",
-                         ep->hwtid, req->status, neg_adv_str(req->status));
+                PDBG("%s Negative advice on abort- tid %u status %d (%s)\n",
+                     __func__, ep->hwtid, req->status,
+                     neg_adv_str(req->status));
+                ep->stats.abort_neg_adv++;
+                dev->rdev.stats.neg_adv++;
                 kfree_skb(skb);
                 return 0;
         }
diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c
index ab7692ac2044..68ddb3710215 100644
--- a/drivers/infiniband/hw/cxgb4/cq.c
+++ b/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) +
-                                        (cq->cqid << rdev->cqshift);
-                cq->ugts &= PAGE_MASK;
+                u32 off = (cq->cqid << rdev->cqshift) & 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,
-             (unsigned long long) chp->cq.dma_addr);
+             chp->cq.memsize, (unsigned long long) chp->cq.dma_addr);
         return &chp->ibcq;
 err5:
         kfree(mm2);
diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c
index 8fb295e4a9ab..cf54d6922dc4 100644
--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/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),
@@ -765,6 +773,29 @@ 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,
diff --git a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
index d87e1650f643..97bb5550a6cf 100644
--- a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
+++ b/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,
diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c
index 3ef0cf9f5c44..cff815b91707 100644
--- a/drivers/infiniband/hw/cxgb4/mem.c
+++ b/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;
 
diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index 15cae5a31018..389ced335bc5 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/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) {
diff --git a/drivers/infiniband/hw/cxgb4/t4.h b/drivers/infiniband/hw/cxgb4/t4.h
index 871cdcac7be2..7f2a6c244d25 100644
--- a/drivers/infiniband/hw/cxgb4/t4.h
+++ b/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;
         }
diff --git a/drivers/infiniband/hw/cxgb4/t4fw_ri_api.h b/drivers/infiniband/hw/cxgb4/t4fw_ri_api.h
index 5e53327fc647..343e8daf2270 100644
--- a/drivers/infiniband/hw/cxgb4/t4fw_ri_api.h
+++ b/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_ */
diff --git a/drivers/infiniband/hw/nes/nes.c b/drivers/infiniband/hw/nes/nes.c
index 3b2a6dc8ea99..9f9d5c563a61 100644
--- a/drivers/infiniband/hw/nes/nes.c
+++ b/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}
diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c
index 6f09a72e78d7..72b43417cbe3 100644
--- a/drivers/infiniband/hw/nes/nes_cm.c
+++ b/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 =
-                        (struct sockaddr_in *)&pm_msg->mapped_loc_addr;
-        struct sockaddr_in *mapped_rem_addr =
-                        (struct sockaddr_in *)&pm_msg->mapped_rem_addr;
-
-        if (mapped_loc_addr->sin_family == AF_INET) {
-                cm_info->mapped_loc_addr =
-                        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) {
-                cm_info->mapped_rem_addr =
-                        ntohl(mapped_rem_addr->sin_addr.s_addr);
-                cm_info->mapped_rem_port = ntohs(mapped_rem_addr->sin_port);
-        }
+        record_sockaddr_info(&pm_msg->mapped_loc_addr,
+                &cm_info->mapped_loc_addr, &cm_info->mapped_loc_port);
+
+        record_sockaddr_info(&pm_msg->mapped_rem_addr,
+                &cm_info->mapped_rem_addr, &cm_info->mapped_rem_port);
+}
+
+/*
+ * nes_get_reminfo - Get the address info of the remote connecting peer
+ */
+static int nes_get_remote_addr(struct nes_cm_node *cm_node)
+{
+        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);
diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h
index ffd48bfc4923..ba5173e24973 100644
--- a/drivers/infiniband/hw/qib/qib.h
+++ b/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);
diff --git a/drivers/infiniband/hw/qib/qib_file_ops.c b/drivers/infiniband/hw/qib/qib_file_ops.c
index 9ea6c440a00c..725881890c4a 100644
--- a/drivers/infiniband/hw/qib/qib_file_ops.c
+++ b/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,
diff --git a/drivers/infiniband/hw/qib/qib_iba6120.c b/drivers/infiniband/hw/qib/qib_iba6120.c
index 0d2ba59af30a..4b927809d1a1 100644
--- a/drivers/infiniband/hw/qib/qib_iba6120.c
+++ b/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);
-                if (ret)
-                        goto bail;
-        }
+        ret = init_chip_wc_pat(dd, 0);
+        if (ret)
+                goto bail;
         set_6120_baseaddrs(dd); /* set chip access pointers now */
 
         ret = 0;
diff --git a/drivers/infiniband/hw/qib/qib_iba7220.c b/drivers/infiniband/hw/qib/qib_iba7220.c
index 22affda8af88..00b2af211157 100644
--- a/drivers/infiniband/hw/qib/qib_iba7220.c
+++ b/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);
-                if (ret)
-                        goto bail;
-        }
+        ret = init_chip_wc_pat(dd, 0);
+        if (ret)
+                goto bail;
         set_7220_baseaddrs(dd); /* set chip access pointers now */
 
         ret = 0;
diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
index ef97b71c8f7d..f32b4628e991 100644
--- a/drivers/infiniband/hw/qib/qib_iba7322.c
+++ b/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
-                 * interrupt-flushed store buffers, so we need
-                 * 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)
-                        goto bail;
+        /*
+         * We do not set WC on the VL15 buffers to avoid
+         * a rare problem with unaligned writes from
+         * interrupt-flushed store buffers, so we need
+         * 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)
+                goto bail;
 
-                /* vl15 buffers start just after the 4k buffers */
-                vl15off = dd->physaddr + (dd->piobufbase >> 32) +
-                        dd->piobcnt4k * dd->align4k;
-                dd->piovl15base = ioremap_nocache(vl15off,
-                                                  NUM_VL15_BUFS * dd->align4k);
-                if (!dd->piovl15base) {
-                        ret = -ENOMEM;
-                        goto bail;
-                }
+        /* vl15 buffers start just after the 4k buffers */
+        vl15off = dd->physaddr + (dd->piobufbase >> 32) +
+                  dd->piobcnt4k * dd->align4k;
+        dd->piovl15base = ioremap_nocache(vl15off,
+                                          NUM_VL15_BUFS * dd->align4k);
+        if (!dd->piovl15base) {
+                ret = -ENOMEM;
+                goto bail;
         }
+
         qib_7322_set_baseaddrs(dd); /* set chip access pointers now */
 
         ret = 0;
diff --git a/drivers/infiniband/hw/qib/qib_init.c b/drivers/infiniband/hw/qib/qib_init.c
index 2ee36953e234..7e00470adc30 100644
--- a/drivers/infiniband/hw/qib/qib_init.c
+++ b/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);
-                if (ret) {
-                        qib_dev_err(dd,
-                                "Write combining not enabled (err %d): performance may be poor\n",
-                                -ret);
-                        ret = 0;
-                }
+        ret = qib_enable_wc(dd);
+        if (ret) {
+                qib_dev_err(dd,
+                        "Write combining not enabled (err %d): performance may be poor\n",
+                        -ret);
+                ret = 0;
         }
 
         qib_verify_pioperf(dd);
diff --git a/drivers/infiniband/hw/qib/qib_wc_x86_64.c b/drivers/infiniband/hw/qib/qib_wc_x86_64.c
index 81b225f2300a..6d61ef98721c 100644
--- a/drivers/infiniband/hw/qib/qib_wc_x86_64.c
+++ b/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;
-
-                cookie = mtrr_add(pioaddr, piolen, MTRR_TYPE_WRCOMB, 0);
-                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;
-                }
+                dd->wc_cookie = arch_phys_wc_add(pioaddr, piolen);
+                if (dd->wc_cookie < 0)
+                        ret = -EINVAL;
         }
 
         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) {
-                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 */
-        }
+        arch_phys_wc_del(dd->wc_cookie);
 }
 
 /**
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
index 56959adb6c7d..cf32a778e7d0 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/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;
-                                goto err_count;
+                        ret = -ENOMEM;
+                        goto err_count;
                 }
                 ret = ipoib_cm_post_receive_nonsrq(dev, rx, &t->wr, t->sge, i);
                 if (ret) {
diff --git a/include/rdma/ib_addr.h b/include/rdma/ib_addr.h
index ce55906b54a0..ac54c27a2bfd 100644
--- a/include/rdma/ib_addr.h
+++ b/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,
diff --git a/include/rdma/ib_cm.h b/include/rdma/ib_cm.h
index 0e3ff30647d5..39ed2d2fbd51 100644
--- a/include/rdma/ib_cm.h
+++ b/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];
-        u8  mask[IB_CM_COMPARE_SIZE];
+        u32  data[IB_CM_COMPARE_SIZE];
+        u32  mask[IB_CM_COMPARE_SIZE];
 };
 
 /**
diff --git a/include/rdma/iw_portmap.h b/include/rdma/iw_portmap.h
index 928b2775e992..fda31673a562 100644
--- a/include/rdma/iw_portmap.h
+++ b/include/rdma/iw_portmap.h
@@ -148,6 +148,16 @@ 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
  *
  * @skb:
@@ -175,6 +185,21 @@ 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
  * @local_addr: Local ip/tcp address
diff --git a/include/uapi/rdma/rdma_netlink.h b/include/uapi/rdma/rdma_netlink.h
index de69170a30ce..6e4bb4270ca2 100644
--- a/include/uapi/rdma/rdma_netlink.h
+++ b/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,