22 files changed, 175 insertions, 129 deletions

diff --git a/drivers/infiniband/hw/cxgb3/cxio_wr.h b/drivers/infiniband/hw/cxgb3/cxio_wr.h
index ff9be1a13106..32e3b1461d81 100644
--- a/drivers/infiniband/hw/cxgb3/cxio_wr.h
+++ b/drivers/infiniband/hw/cxgb3/cxio_wr.h
@@ -176,7 +176,7 @@ struct t3_send_wr {
         struct t3_sge sgl[T3_MAX_SGE];  /* 4+ */
 };
 
-#define T3_MAX_FASTREG_DEPTH 24
+#define T3_MAX_FASTREG_DEPTH 10
 #define T3_MAX_FASTREG_FRAG 10
 
 struct t3_fastreg_wr {
diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c
index 160ef482712d..e2a63214008a 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c
@@ -40,6 +40,7 @@
 #include <linux/spinlock.h>
 #include <linux/ethtool.h>
 #include <linux/rtnetlink.h>
+#include <linux/inetdevice.h>
 
 #include <asm/io.h>
 #include <asm/irq.h>
@@ -1152,12 +1153,39 @@ static int iwch_query_device(struct ib_device *ibdev,
 static int iwch_query_port(struct ib_device *ibdev,
                            u8 port, struct ib_port_attr *props)
 {
+        struct iwch_dev *dev;
+        struct net_device *netdev;
+        struct in_device *inetdev;
+
         PDBG("%s ibdev %p\n", __func__, ibdev);
 
+        dev = to_iwch_dev(ibdev);
+        netdev = dev->rdev.port_info.lldevs[port-1];
+
         memset(props, 0, sizeof(struct ib_port_attr));
         props->max_mtu = IB_MTU_4096;
-        props->active_mtu = IB_MTU_2048;
-        props->state = IB_PORT_ACTIVE;
+        if (netdev->mtu >= 4096)
+                props->active_mtu = IB_MTU_4096;
+        else if (netdev->mtu >= 2048)
+                props->active_mtu = IB_MTU_2048;
+        else if (netdev->mtu >= 1024)
+                props->active_mtu = IB_MTU_1024;
+        else if (netdev->mtu >= 512)
+                props->active_mtu = IB_MTU_512;
+        else
+                props->active_mtu = IB_MTU_256;
+
+        if (!netif_carrier_ok(netdev))
+                props->state = IB_PORT_DOWN;
+        else {
+                inetdev = in_dev_get(netdev);
+                if (inetdev->ifa_list)
+                        props->state = IB_PORT_ACTIVE;
+                else
+                        props->state = IB_PORT_INIT;
+                in_dev_put(inetdev);
+        }
+
         props->port_cap_flags =
             IB_PORT_CM_SUP |
             IB_PORT_SNMP_TUNNEL_SUP |
diff --git a/drivers/infiniband/hw/ehca/ehca_classes_pSeries.h b/drivers/infiniband/hw/ehca/ehca_classes_pSeries.h
index 1798e6466bd0..689c35786dd2 100644
--- a/drivers/infiniband/hw/ehca/ehca_classes_pSeries.h
+++ b/drivers/infiniband/hw/ehca/ehca_classes_pSeries.h
@@ -165,7 +165,6 @@ struct hcp_modify_qp_control_block {
 #define MQPCB_MASK_ALT_P_KEY_IDX                EHCA_BMASK_IBM( 7,  7)
 #define MQPCB_MASK_RDMA_ATOMIC_CTRL             EHCA_BMASK_IBM( 8,  8)
 #define MQPCB_MASK_QP_STATE                     EHCA_BMASK_IBM( 9,  9)
-#define MQPCB_QP_STATE                          EHCA_BMASK_IBM(24, 31)
 #define MQPCB_MASK_RDMA_NR_ATOMIC_RESP_RES      EHCA_BMASK_IBM(11, 11)
 #define MQPCB_MASK_PATH_MIGRATION_STATE         EHCA_BMASK_IBM(12, 12)
 #define MQPCB_MASK_RDMA_ATOMIC_OUTST_DEST_QP    EHCA_BMASK_IBM(13, 13)
@@ -176,60 +175,33 @@ struct hcp_modify_qp_control_block {
 #define MQPCB_MASK_RETRY_COUNT                  EHCA_BMASK_IBM(18, 18)
 #define MQPCB_MASK_TIMEOUT                      EHCA_BMASK_IBM(19, 19)
 #define MQPCB_MASK_PATH_MTU                     EHCA_BMASK_IBM(20, 20)
-#define MQPCB_PATH_MTU                          EHCA_BMASK_IBM(24, 31)
 #define MQPCB_MASK_MAX_STATIC_RATE              EHCA_BMASK_IBM(21, 21)
-#define MQPCB_MAX_STATIC_RATE                   EHCA_BMASK_IBM(24, 31)
 #define MQPCB_MASK_DLID                         EHCA_BMASK_IBM(22, 22)
-#define MQPCB_DLID                              EHCA_BMASK_IBM(16, 31)
 #define MQPCB_MASK_RNR_RETRY_COUNT              EHCA_BMASK_IBM(23, 23)
-#define MQPCB_RNR_RETRY_COUNT                   EHCA_BMASK_IBM(29, 31)
 #define MQPCB_MASK_SOURCE_PATH_BITS             EHCA_BMASK_IBM(24, 24)
-#define MQPCB_SOURCE_PATH_BITS                  EHCA_BMASK_IBM(25, 31)
 #define MQPCB_MASK_TRAFFIC_CLASS                EHCA_BMASK_IBM(25, 25)
-#define MQPCB_TRAFFIC_CLASS                     EHCA_BMASK_IBM(24, 31)
 #define MQPCB_MASK_HOP_LIMIT                    EHCA_BMASK_IBM(26, 26)
-#define MQPCB_HOP_LIMIT                         EHCA_BMASK_IBM(24, 31)
 #define MQPCB_MASK_SOURCE_GID_IDX               EHCA_BMASK_IBM(27, 27)
-#define MQPCB_SOURCE_GID_IDX                    EHCA_BMASK_IBM(24, 31)
 #define MQPCB_MASK_FLOW_LABEL                   EHCA_BMASK_IBM(28, 28)
-#define MQPCB_FLOW_LABEL                        EHCA_BMASK_IBM(12, 31)
 #define MQPCB_MASK_DEST_GID                     EHCA_BMASK_IBM(30, 30)
 #define MQPCB_MASK_SERVICE_LEVEL_AL             EHCA_BMASK_IBM(31, 31)
-#define MQPCB_SERVICE_LEVEL_AL                  EHCA_BMASK_IBM(28, 31)
 #define MQPCB_MASK_SEND_GRH_FLAG_AL             EHCA_BMASK_IBM(32, 32)
-#define MQPCB_SEND_GRH_FLAG_AL                  EHCA_BMASK_IBM(31, 31)
 #define MQPCB_MASK_RETRY_COUNT_AL               EHCA_BMASK_IBM(33, 33)
-#define MQPCB_RETRY_COUNT_AL                    EHCA_BMASK_IBM(29, 31)
 #define MQPCB_MASK_TIMEOUT_AL                   EHCA_BMASK_IBM(34, 34)
-#define MQPCB_TIMEOUT_AL                        EHCA_BMASK_IBM(27, 31)
 #define MQPCB_MASK_MAX_STATIC_RATE_AL           EHCA_BMASK_IBM(35, 35)
-#define MQPCB_MAX_STATIC_RATE_AL                EHCA_BMASK_IBM(24, 31)
 #define MQPCB_MASK_DLID_AL                      EHCA_BMASK_IBM(36, 36)
-#define MQPCB_DLID_AL                           EHCA_BMASK_IBM(16, 31)
 #define MQPCB_MASK_RNR_RETRY_COUNT_AL           EHCA_BMASK_IBM(37, 37)
-#define MQPCB_RNR_RETRY_COUNT_AL                EHCA_BMASK_IBM(29, 31)
 #define MQPCB_MASK_SOURCE_PATH_BITS_AL          EHCA_BMASK_IBM(38, 38)
-#define MQPCB_SOURCE_PATH_BITS_AL               EHCA_BMASK_IBM(25, 31)
 #define MQPCB_MASK_TRAFFIC_CLASS_AL             EHCA_BMASK_IBM(39, 39)
-#define MQPCB_TRAFFIC_CLASS_AL                  EHCA_BMASK_IBM(24, 31)
 #define MQPCB_MASK_HOP_LIMIT_AL                 EHCA_BMASK_IBM(40, 40)
-#define MQPCB_HOP_LIMIT_AL                      EHCA_BMASK_IBM(24, 31)
 #define MQPCB_MASK_SOURCE_GID_IDX_AL            EHCA_BMASK_IBM(41, 41)
-#define MQPCB_SOURCE_GID_IDX_AL                 EHCA_BMASK_IBM(24, 31)
 #define MQPCB_MASK_FLOW_LABEL_AL                EHCA_BMASK_IBM(42, 42)
-#define MQPCB_FLOW_LABEL_AL                     EHCA_BMASK_IBM(12, 31)
 #define MQPCB_MASK_DEST_GID_AL                  EHCA_BMASK_IBM(44, 44)
 #define MQPCB_MASK_MAX_NR_OUTST_SEND_WR         EHCA_BMASK_IBM(45, 45)
-#define MQPCB_MAX_NR_OUTST_SEND_WR              EHCA_BMASK_IBM(16, 31)
 #define MQPCB_MASK_MAX_NR_OUTST_RECV_WR         EHCA_BMASK_IBM(46, 46)
-#define MQPCB_MAX_NR_OUTST_RECV_WR              EHCA_BMASK_IBM(16, 31)
 #define MQPCB_MASK_DISABLE_ETE_CREDIT_CHECK     EHCA_BMASK_IBM(47, 47)
-#define MQPCB_DISABLE_ETE_CREDIT_CHECK          EHCA_BMASK_IBM(31, 31)
-#define MQPCB_QP_NUMBER                         EHCA_BMASK_IBM( 8, 31)
 #define MQPCB_MASK_QP_ENABLE                    EHCA_BMASK_IBM(48, 48)
-#define MQPCB_QP_ENABLE                         EHCA_BMASK_IBM(31, 31)
 #define MQPCB_MASK_CURR_SRQ_LIMIT               EHCA_BMASK_IBM(49, 49)
-#define MQPCB_CURR_SRQ_LIMIT                    EHCA_BMASK_IBM(16, 31)
 #define MQPCB_MASK_QP_AFF_ASYN_EV_LOG_REG       EHCA_BMASK_IBM(50, 50)
 #define MQPCB_MASK_SHARED_RQ_HNDL               EHCA_BMASK_IBM(51, 51)
 
diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c
index 368311ce332b..85905ab9391f 100644
--- a/drivers/infiniband/hw/ehca/ehca_main.c
+++ b/drivers/infiniband/hw/ehca/ehca_main.c
@@ -52,7 +52,7 @@
 #include "ehca_tools.h"
 #include "hcp_if.h"
 
-#define HCAD_VERSION "0026"
+#define HCAD_VERSION "0027"
 
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c
index 00c108159714..0338f1fabe8a 100644
--- a/drivers/infiniband/hw/ehca/ehca_qp.c
+++ b/drivers/infiniband/hw/ehca/ehca_qp.c
@@ -461,7 +461,7 @@ static struct ehca_qp *internal_create_qp(
                                               ib_device);
         struct ib_ucontext *context = NULL;
         u64 h_ret;
-        int is_llqp = 0, has_srq = 0;
+        int is_llqp = 0, has_srq = 0, is_user = 0;
         int qp_type, max_send_sge, max_recv_sge, ret;
 
         /* h_call's out parameters */
@@ -609,9 +609,6 @@ static struct ehca_qp *internal_create_qp(
                 }
         }
 
-        if (pd->uobject && udata)
-                context = pd->uobject->context;
-
         my_qp = kmem_cache_zalloc(qp_cache, GFP_KERNEL);
         if (!my_qp) {
                 ehca_err(pd->device, "pd=%p not enough memory to alloc qp", pd);
@@ -619,6 +616,11 @@ static struct ehca_qp *internal_create_qp(
                 return ERR_PTR(-ENOMEM);
         }
 
+        if (pd->uobject && udata) {
+                is_user = 1;
+                context = pd->uobject->context;
+        }
+
         atomic_set(&my_qp->nr_events, 0);
         init_waitqueue_head(&my_qp->wait_completion);
         spin_lock_init(&my_qp->spinlock_s);
@@ -707,7 +709,7 @@ static struct ehca_qp *internal_create_qp(
                         (parms.squeue.is_small || parms.rqueue.is_small);
         }
 
-        h_ret = hipz_h_alloc_resource_qp(shca->ipz_hca_handle, &parms);
+        h_ret = hipz_h_alloc_resource_qp(shca->ipz_hca_handle, &parms, is_user);
         if (h_ret != H_SUCCESS) {
                 ehca_err(pd->device, "h_alloc_resource_qp() failed h_ret=%lli",
                          h_ret);
@@ -769,18 +771,20 @@ static struct ehca_qp *internal_create_qp(
                         goto create_qp_exit2;
                 }
 
-                my_qp->sq_map.entries = my_qp->ipz_squeue.queue_length /
-                         my_qp->ipz_squeue.qe_size;
-                my_qp->sq_map.map = vmalloc(my_qp->sq_map.entries *
-                                        sizeof(struct ehca_qmap_entry));
-                if (!my_qp->sq_map.map) {
-                        ehca_err(pd->device, "Couldn't allocate squeue "
-                                 "map ret=%i", ret);
-                        goto create_qp_exit3;
+                if (!is_user) {
+                        my_qp->sq_map.entries = my_qp->ipz_squeue.queue_length /
+                                my_qp->ipz_squeue.qe_size;
+                        my_qp->sq_map.map = vmalloc(my_qp->sq_map.entries *
+                                                    sizeof(struct ehca_qmap_entry));
+                        if (!my_qp->sq_map.map) {
+                                ehca_err(pd->device, "Couldn't allocate squeue "
+                                         "map ret=%i", ret);
+                                goto create_qp_exit3;
+                        }
+                        INIT_LIST_HEAD(&my_qp->sq_err_node);
+                        /* to avoid the generation of bogus flush CQEs */
+                        reset_queue_map(&my_qp->sq_map);
                 }
-                INIT_LIST_HEAD(&my_qp->sq_err_node);
-                /* to avoid the generation of bogus flush CQEs */
-                reset_queue_map(&my_qp->sq_map);
         }
 
         if (HAS_RQ(my_qp)) {
@@ -792,20 +796,21 @@ static struct ehca_qp *internal_create_qp(
                                  "and pages ret=%i", ret);
                         goto create_qp_exit4;
                 }
-
-                my_qp->rq_map.entries = my_qp->ipz_rqueue.queue_length /
-                        my_qp->ipz_rqueue.qe_size;
-                my_qp->rq_map.map = vmalloc(my_qp->rq_map.entries *
-                                sizeof(struct ehca_qmap_entry));
-                if (!my_qp->rq_map.map) {
-                        ehca_err(pd->device, "Couldn't allocate squeue "
-                                        "map ret=%i", ret);
-                        goto create_qp_exit5;
+                if (!is_user) {
+                        my_qp->rq_map.entries = my_qp->ipz_rqueue.queue_length /
+                                my_qp->ipz_rqueue.qe_size;
+                        my_qp->rq_map.map = vmalloc(my_qp->rq_map.entries *
+                                                    sizeof(struct ehca_qmap_entry));
+                        if (!my_qp->rq_map.map) {
+                                ehca_err(pd->device, "Couldn't allocate squeue "
+                                         "map ret=%i", ret);
+                                goto create_qp_exit5;
+                        }
+                        INIT_LIST_HEAD(&my_qp->rq_err_node);
+                        /* to avoid the generation of bogus flush CQEs */
+                        reset_queue_map(&my_qp->rq_map);
                 }
-                INIT_LIST_HEAD(&my_qp->rq_err_node);
-                /* to avoid the generation of bogus flush CQEs */
-                reset_queue_map(&my_qp->rq_map);
-        } else if (init_attr->srq) {
+        } else if (init_attr->srq && !is_user) {
                 /* this is a base QP, use the queue map of the SRQ */
                 my_qp->rq_map = my_srq->rq_map;
                 INIT_LIST_HEAD(&my_qp->rq_err_node);
@@ -918,7 +923,7 @@ create_qp_exit7:
         kfree(my_qp->mod_qp_parm);
 
 create_qp_exit6:
-        if (HAS_RQ(my_qp))
+        if (HAS_RQ(my_qp) && !is_user)
                 vfree(my_qp->rq_map.map);
 
 create_qp_exit5:
@@ -926,7 +931,7 @@ create_qp_exit5:
                 ipz_queue_dtor(my_pd, &my_qp->ipz_rqueue);
 
 create_qp_exit4:
-        if (HAS_SQ(my_qp))
+        if (HAS_SQ(my_qp) && !is_user)
                 vfree(my_qp->sq_map.map);
 
 create_qp_exit3:
@@ -1244,6 +1249,7 @@ static int internal_modify_qp(struct ib_qp *ibqp,
         u64 update_mask;
         u64 h_ret;
         int bad_wqe_cnt = 0;
+        int is_user = 0;
         int squeue_locked = 0;
         unsigned long flags = 0;
 
@@ -1266,6 +1272,8 @@ static int internal_modify_qp(struct ib_qp *ibqp,
                 ret = ehca2ib_return_code(h_ret);
                 goto modify_qp_exit1;
         }
+        if (ibqp->uobject)
+                is_user = 1;
 
         qp_cur_state = ehca2ib_qp_state(mqpcb->qp_state);
 
@@ -1728,7 +1736,8 @@ static int internal_modify_qp(struct ib_qp *ibqp,
                         goto modify_qp_exit2;
                 }
         }
-        if ((qp_new_state == IB_QPS_ERR) && (qp_cur_state != IB_QPS_ERR)) {
+        if ((qp_new_state == IB_QPS_ERR) && (qp_cur_state != IB_QPS_ERR)
+            && !is_user) {
                 ret = check_for_left_cqes(my_qp, shca);
                 if (ret)
                         goto modify_qp_exit2;
@@ -1738,16 +1747,17 @@ static int internal_modify_qp(struct ib_qp *ibqp,
                 ipz_qeit_reset(&my_qp->ipz_rqueue);
                 ipz_qeit_reset(&my_qp->ipz_squeue);
 
-                if (qp_cur_state == IB_QPS_ERR) {
+                if (qp_cur_state == IB_QPS_ERR && !is_user) {
                         del_from_err_list(my_qp->send_cq, &my_qp->sq_err_node);
 
                         if (HAS_RQ(my_qp))
                                 del_from_err_list(my_qp->recv_cq,
                                                   &my_qp->rq_err_node);
                 }
-                reset_queue_map(&my_qp->sq_map);
+                if (!is_user)
+                        reset_queue_map(&my_qp->sq_map);
 
-                if (HAS_RQ(my_qp))
+                if (HAS_RQ(my_qp) && !is_user)
                         reset_queue_map(&my_qp->rq_map);
         }
 
@@ -1952,19 +1962,13 @@ int ehca_query_qp(struct ib_qp *qp,
         qp_attr->cap.max_inline_data = my_qp->sq_max_inline_data_size;
         qp_attr->dest_qp_num = qpcb->dest_qp_nr;
 
-        qp_attr->pkey_index =
-                EHCA_BMASK_GET(MQPCB_PRIM_P_KEY_IDX, qpcb->prim_p_key_idx);
-
-        qp_attr->port_num =
-                EHCA_BMASK_GET(MQPCB_PRIM_PHYS_PORT, qpcb->prim_phys_port);
-
+        qp_attr->pkey_index = qpcb->prim_p_key_idx;
+        qp_attr->port_num = qpcb->prim_phys_port;
         qp_attr->timeout = qpcb->timeout;
         qp_attr->retry_cnt = qpcb->retry_count;
         qp_attr->rnr_retry = qpcb->rnr_retry_count;
 
-        qp_attr->alt_pkey_index =
-                EHCA_BMASK_GET(MQPCB_PRIM_P_KEY_IDX, qpcb->alt_p_key_idx);
-
+        qp_attr->alt_pkey_index = qpcb->alt_p_key_idx;
         qp_attr->alt_port_num = qpcb->alt_phys_port;
         qp_attr->alt_timeout = qpcb->timeout_al;
 
@@ -2051,8 +2055,7 @@ int ehca_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
                 update_mask |=
                         EHCA_BMASK_SET(MQPCB_MASK_CURR_SRQ_LIMIT, 1)
                         | EHCA_BMASK_SET(MQPCB_MASK_QP_AFF_ASYN_EV_LOG_REG, 1);
-                mqpcb->curr_srq_limit =
-                        EHCA_BMASK_SET(MQPCB_CURR_SRQ_LIMIT, attr->srq_limit);
+                mqpcb->curr_srq_limit = attr->srq_limit;
                 mqpcb->qp_aff_asyn_ev_log_reg =
                         EHCA_BMASK_SET(QPX_AAELOG_RESET_SRQ_LIMIT, 1);
         }
@@ -2115,8 +2118,7 @@ int ehca_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr)
 
         srq_attr->max_wr = qpcb->max_nr_outst_recv_wr - 1;
         srq_attr->max_sge = 3;
-        srq_attr->srq_limit = EHCA_BMASK_GET(
-                MQPCB_CURR_SRQ_LIMIT, qpcb->curr_srq_limit);
+        srq_attr->srq_limit = qpcb->curr_srq_limit;
 
         if (ehca_debug_level >= 2)
                 ehca_dmp(qpcb, 4*70, "qp_num=%x", my_qp->real_qp_num);
@@ -2138,10 +2140,12 @@ static int internal_destroy_qp(struct ib_device *dev, struct ehca_qp *my_qp,
         int ret;
         u64 h_ret;
         u8 port_num;
+        int is_user = 0;
         enum ib_qp_type qp_type;
         unsigned long flags;
 
         if (uobject) {
+                is_user = 1;
                 if (my_qp->mm_count_galpa ||
                     my_qp->mm_count_rqueue || my_qp->mm_count_squeue) {
                         ehca_err(dev, "Resources still referenced in "
@@ -2168,10 +2172,10 @@ static int internal_destroy_qp(struct ib_device *dev, struct ehca_qp *my_qp,
          * SRQs will never get into an error list and do not have a recv_cq,
          * so we need to skip them here.
          */
-        if (HAS_RQ(my_qp) && !IS_SRQ(my_qp))
+        if (HAS_RQ(my_qp) && !IS_SRQ(my_qp) && !is_user)
                 del_from_err_list(my_qp->recv_cq, &my_qp->rq_err_node);
 
-        if (HAS_SQ(my_qp))
+        if (HAS_SQ(my_qp) && !is_user)
                 del_from_err_list(my_qp->send_cq, &my_qp->sq_err_node);
 
         /* now wait until all pending events have completed */
@@ -2209,13 +2213,13 @@ static int internal_destroy_qp(struct ib_device *dev, struct ehca_qp *my_qp,
 
         if (HAS_RQ(my_qp)) {
                 ipz_queue_dtor(my_pd, &my_qp->ipz_rqueue);
-
-                vfree(my_qp->rq_map.map);
+                if (!is_user)
+                        vfree(my_qp->rq_map.map);
         }
         if (HAS_SQ(my_qp)) {
                 ipz_queue_dtor(my_pd, &my_qp->ipz_squeue);
-
-                vfree(my_qp->sq_map.map);
+                if (!is_user)
+                        vfree(my_qp->sq_map.map);
         }
         kmem_cache_free(qp_cache, my_qp);
         atomic_dec(&shca->num_qps);
diff --git a/drivers/infiniband/hw/ehca/hcp_if.c b/drivers/infiniband/hw/ehca/hcp_if.c
index d0ab0c0d5e91..4d5dc3304d42 100644
--- a/drivers/infiniband/hw/ehca/hcp_if.c
+++ b/drivers/infiniband/hw/ehca/hcp_if.c
@@ -284,7 +284,7 @@ u64 hipz_h_alloc_resource_cq(const struct ipz_adapter_handle adapter_handle,
         param->act_pages = (u32)outs[4];
 
         if (ret == H_SUCCESS)
-                hcp_galpas_ctor(&cq->galpas, outs[5], outs[6]);
+                hcp_galpas_ctor(&cq->galpas, 0, outs[5], outs[6]);
 
         if (ret == H_NOT_ENOUGH_RESOURCES)
                 ehca_gen_err("Not enough resources. ret=%lli", ret);
@@ -293,7 +293,7 @@ u64 hipz_h_alloc_resource_cq(const struct ipz_adapter_handle adapter_handle,
 }
 
 u64 hipz_h_alloc_resource_qp(const struct ipz_adapter_handle adapter_handle,
-                             struct ehca_alloc_qp_parms *parms)
+                             struct ehca_alloc_qp_parms *parms, int is_user)
 {
         u64 ret;
         u64 allocate_controls, max_r10_reg, r11, r12;
@@ -359,7 +359,7 @@ u64 hipz_h_alloc_resource_qp(const struct ipz_adapter_handle adapter_handle,
                 (u32)EHCA_BMASK_GET(H_ALL_RES_QP_RQUEUE_SIZE_PAGES, outs[4]);
 
         if (ret == H_SUCCESS)
-                hcp_galpas_ctor(&parms->galpas, outs[6], outs[6]);
+                hcp_galpas_ctor(&parms->galpas, is_user, outs[6], outs[6]);
 
         if (ret == H_NOT_ENOUGH_RESOURCES)
                 ehca_gen_err("Not enough resources. ret=%lli", ret);
diff --git a/drivers/infiniband/hw/ehca/hcp_if.h b/drivers/infiniband/hw/ehca/hcp_if.h
index 2c3c6e0ea5c2..39c1c3618ec7 100644
--- a/drivers/infiniband/hw/ehca/hcp_if.h
+++ b/drivers/infiniband/hw/ehca/hcp_if.h
@@ -78,7 +78,7 @@ u64 hipz_h_alloc_resource_cq(const struct ipz_adapter_handle adapter_handle,
  * initialize resources, create empty QPPTs (2 rings).
  */
 u64 hipz_h_alloc_resource_qp(const struct ipz_adapter_handle adapter_handle,
-                             struct ehca_alloc_qp_parms *parms);
+                             struct ehca_alloc_qp_parms *parms, int is_user);
 
 u64 hipz_h_query_port(const struct ipz_adapter_handle adapter_handle,
                       const u8 port_id,
diff --git a/drivers/infiniband/hw/ehca/hcp_phyp.c b/drivers/infiniband/hw/ehca/hcp_phyp.c
index 214821095cb1..b3e0e72e8a73 100644
--- a/drivers/infiniband/hw/ehca/hcp_phyp.c
+++ b/drivers/infiniband/hw/ehca/hcp_phyp.c
@@ -54,12 +54,15 @@ int hcall_unmap_page(u64 mapaddr)
         return 0;
 }
 
-int hcp_galpas_ctor(struct h_galpas *galpas,
+int hcp_galpas_ctor(struct h_galpas *galpas, int is_user,
                     u64 paddr_kernel, u64 paddr_user)
 {
-        int ret = hcall_map_page(paddr_kernel, &galpas->kernel.fw_handle);
-        if (ret)
-                return ret;
+        if (!is_user) {
+                int ret = hcall_map_page(paddr_kernel, &galpas->kernel.fw_handle);
+                if (ret)
+                        return ret;
+        } else
+                galpas->kernel.fw_handle = 0;
 
         galpas->user.fw_handle = paddr_user;
 
diff --git a/drivers/infiniband/hw/ehca/hcp_phyp.h b/drivers/infiniband/hw/ehca/hcp_phyp.h
index 5305c2a3ed94..204227d5303a 100644
--- a/drivers/infiniband/hw/ehca/hcp_phyp.h
+++ b/drivers/infiniband/hw/ehca/hcp_phyp.h
@@ -78,7 +78,7 @@ static inline void hipz_galpa_store(struct h_galpa galpa, u32 offset, u64 value)
         *(volatile u64 __force *)addr = value;
 }
 
-int hcp_galpas_ctor(struct h_galpas *galpas,
+int hcp_galpas_ctor(struct h_galpas *galpas, int is_user,
                     u64 paddr_kernel, u64 paddr_user);
 
 int hcp_galpas_dtor(struct h_galpas *galpas);
diff --git a/drivers/infiniband/hw/ehca/ipz_pt_fn.c b/drivers/infiniband/hw/ehca/ipz_pt_fn.c
index c3a328465431..1227c593627a 100644
--- a/drivers/infiniband/hw/ehca/ipz_pt_fn.c
+++ b/drivers/infiniband/hw/ehca/ipz_pt_fn.c
@@ -220,10 +220,13 @@ int ipz_queue_ctor(struct ehca_pd *pd, struct ipz_queue *queue,
         queue->small_page = NULL;
 
         /* allocate queue page pointers */
-        queue->queue_pages = vmalloc(nr_of_pages * sizeof(void *));
+        queue->queue_pages = kmalloc(nr_of_pages * sizeof(void *), GFP_KERNEL);
         if (!queue->queue_pages) {
-                ehca_gen_err("Couldn't allocate queue page list");
-                return 0;
+                queue->queue_pages = vmalloc(nr_of_pages * sizeof(void *));
+                if (!queue->queue_pages) {
+                        ehca_gen_err("Couldn't allocate queue page list");
+                        return 0;
+                }
         }
         memset(queue->queue_pages, 0, nr_of_pages * sizeof(void *));
 
@@ -240,7 +243,10 @@ int ipz_queue_ctor(struct ehca_pd *pd, struct ipz_queue *queue,
 ipz_queue_ctor_exit0:
         ehca_gen_err("Couldn't alloc pages queue=%p "
                  "nr_of_pages=%x",  queue, nr_of_pages);
-        vfree(queue->queue_pages);
+        if (is_vmalloc_addr(queue->queue_pages))
+                vfree(queue->queue_pages);
+        else
+                kfree(queue->queue_pages);
 
         return 0;
 }
@@ -262,7 +268,10 @@ int ipz_queue_dtor(struct ehca_pd *pd, struct ipz_queue *queue)
                         free_page((unsigned long)queue->queue_pages[i]);
         }
 
-        vfree(queue->queue_pages);
+        if (is_vmalloc_addr(queue->queue_pages))
+                vfree(queue->queue_pages);
+        else
+                kfree(queue->queue_pages);
 
         return 1;
 }
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index 20724aee76f4..c4a02648c8af 100644
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -1585,12 +1585,16 @@ int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
                                 break;
 
                         case IB_WR_LOCAL_INV:
+                                ctrl->srcrb_flags |=
+                                        cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER);
                                 set_local_inv_seg(wqe, wr->ex.invalidate_rkey);
                                 wqe  += sizeof (struct mlx4_wqe_local_inval_seg);
                                 size += sizeof (struct mlx4_wqe_local_inval_seg) / 16;
                                 break;
 
                         case IB_WR_FAST_REG_MR:
+                                ctrl->srcrb_flags |=
+                                        cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER);
                                 set_fmr_seg(wqe, wr);
                                 wqe  += sizeof (struct mlx4_wqe_fmr_seg);
                                 size += sizeof (struct mlx4_wqe_fmr_seg) / 16;
diff --git a/drivers/infiniband/hw/mthca/mthca_cmd.c b/drivers/infiniband/hw/mthca/mthca_cmd.c
index 6d55f9d748f6..8c2ed994d540 100644
--- a/drivers/infiniband/hw/mthca/mthca_cmd.c
+++ b/drivers/infiniband/hw/mthca/mthca_cmd.c
@@ -1059,7 +1059,7 @@ int mthca_QUERY_DEV_LIM(struct mthca_dev *dev,
         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MTT_OFFSET);
         if (mthca_is_memfree(dev))
                 dev_lim->reserved_mtts = ALIGN((1 << (field >> 4)) * sizeof(u64),
-                                               MTHCA_MTT_SEG_SIZE) / MTHCA_MTT_SEG_SIZE;
+                                               dev->limits.mtt_seg_size) / dev->limits.mtt_seg_size;
         else
                 dev_lim->reserved_mtts = 1 << (field >> 4);
         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MRW_SZ_OFFSET);
diff --git a/drivers/infiniband/hw/mthca/mthca_dev.h b/drivers/infiniband/hw/mthca/mthca_dev.h
index 252590116df5..9ef611f6dd36 100644
--- a/drivers/infiniband/hw/mthca/mthca_dev.h
+++ b/drivers/infiniband/hw/mthca/mthca_dev.h
@@ -159,6 +159,7 @@ struct mthca_limits {
         int      reserved_eqs;
         int      num_mpts;
         int      num_mtt_segs;
+        int      mtt_seg_size;
         int      fmr_reserved_mtts;
         int      reserved_mtts;
         int      reserved_mrws;
diff --git a/drivers/infiniband/hw/mthca/mthca_eq.c b/drivers/infiniband/hw/mthca/mthca_eq.c
index 28f0e0c40d7d..90e4e450a120 100644
--- a/drivers/infiniband/hw/mthca/mthca_eq.c
+++ b/drivers/infiniband/hw/mthca/mthca_eq.c
@@ -641,9 +641,11 @@ static void mthca_free_irqs(struct mthca_dev *dev)
         if (dev->eq_table.have_irq)
                 free_irq(dev->pdev->irq, dev);
         for (i = 0; i < MTHCA_NUM_EQ; ++i)
-                if (dev->eq_table.eq[i].have_irq)
+                if (dev->eq_table.eq[i].have_irq) {
                         free_irq(dev->eq_table.eq[i].msi_x_vector,
                                  dev->eq_table.eq + i);
+                        dev->eq_table.eq[i].have_irq = 0;
+                }
 }
 
 static int mthca_map_reg(struct mthca_dev *dev,
diff --git a/drivers/infiniband/hw/mthca/mthca_main.c b/drivers/infiniband/hw/mthca/mthca_main.c
index 1d83cf7caf38..13da9f1d24c0 100644
--- a/drivers/infiniband/hw/mthca/mthca_main.c
+++ b/drivers/infiniband/hw/mthca/mthca_main.c
@@ -125,6 +125,10 @@ module_param_named(fmr_reserved_mtts, hca_profile.fmr_reserved_mtts, int, 0444);
 MODULE_PARM_DESC(fmr_reserved_mtts,
                  "number of memory translation table segments reserved for FMR");
 
+static int log_mtts_per_seg = ilog2(MTHCA_MTT_SEG_SIZE / 8);
+module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444);
+MODULE_PARM_DESC(log_mtts_per_seg, "Log2 number of MTT entries per segment (1-5)");
+
 static char mthca_version[] __devinitdata =
         DRV_NAME ": Mellanox InfiniBand HCA driver v"
         DRV_VERSION " (" DRV_RELDATE ")\n";
@@ -162,6 +166,7 @@ static int mthca_dev_lim(struct mthca_dev *mdev, struct mthca_dev_lim *dev_lim)
         int err;
         u8 status;
 
+        mdev->limits.mtt_seg_size = (1 << log_mtts_per_seg) * 8;
         err = mthca_QUERY_DEV_LIM(mdev, dev_lim, &status);
         if (err) {
                 mthca_err(mdev, "QUERY_DEV_LIM command failed, aborting.\n");
@@ -460,11 +465,11 @@ static int mthca_init_icm(struct mthca_dev *mdev,
         }
 
         /* CPU writes to non-reserved MTTs, while HCA might DMA to reserved mtts */
-        mdev->limits.reserved_mtts = ALIGN(mdev->limits.reserved_mtts * MTHCA_MTT_SEG_SIZE,
-                                           dma_get_cache_alignment()) / MTHCA_MTT_SEG_SIZE;
+        mdev->limits.reserved_mtts = ALIGN(mdev->limits.reserved_mtts * mdev->limits.mtt_seg_size,
+                                           dma_get_cache_alignment()) / mdev->limits.mtt_seg_size;
 
         mdev->mr_table.mtt_table = mthca_alloc_icm_table(mdev, init_hca->mtt_base,
-                                                         MTHCA_MTT_SEG_SIZE,
+                                                         mdev->limits.mtt_seg_size,
                                                          mdev->limits.num_mtt_segs,
                                                          mdev->limits.reserved_mtts,
                                                          1, 0);
@@ -1315,6 +1320,12 @@ static void __init mthca_validate_profile(void)
                 printk(KERN_WARNING PFX "Corrected fmr_reserved_mtts to %d.\n",
                        hca_profile.fmr_reserved_mtts);
         }
+
+        if ((log_mtts_per_seg < 1) || (log_mtts_per_seg > 5)) {
+                printk(KERN_WARNING PFX "bad log_mtts_per_seg (%d). Using default - %d\n",
+                       log_mtts_per_seg, ilog2(MTHCA_MTT_SEG_SIZE / 8));
+                log_mtts_per_seg = ilog2(MTHCA_MTT_SEG_SIZE / 8);
+        }
 }
 
 static int __init mthca_init(void)
diff --git a/drivers/infiniband/hw/mthca/mthca_mr.c b/drivers/infiniband/hw/mthca/mthca_mr.c
index 882e6b735915..d606edf10858 100644
--- a/drivers/infiniband/hw/mthca/mthca_mr.c
+++ b/drivers/infiniband/hw/mthca/mthca_mr.c
@@ -220,7 +220,7 @@ static struct mthca_mtt *__mthca_alloc_mtt(struct mthca_dev *dev, int size,
 
         mtt->buddy = buddy;
         mtt->order = 0;
-        for (i = MTHCA_MTT_SEG_SIZE / 8; i < size; i <<= 1)
+        for (i = dev->limits.mtt_seg_size / 8; i < size; i <<= 1)
                 ++mtt->order;
 
         mtt->first_seg = mthca_alloc_mtt_range(dev, mtt->order, buddy);
@@ -267,7 +267,7 @@ static int __mthca_write_mtt(struct mthca_dev *dev, struct mthca_mtt *mtt,
 
         while (list_len > 0) {
                 mtt_entry[0] = cpu_to_be64(dev->mr_table.mtt_base +
-                                           mtt->first_seg * MTHCA_MTT_SEG_SIZE +
+                                           mtt->first_seg * dev->limits.mtt_seg_size +
                                            start_index * 8);
                 mtt_entry[1] = 0;
                 for (i = 0; i < list_len && i < MTHCA_MAILBOX_SIZE / 8 - 2; ++i)
@@ -326,7 +326,7 @@ static void mthca_tavor_write_mtt_seg(struct mthca_dev *dev,
         u64 __iomem *mtts;
         int i;
 
-        mtts = dev->mr_table.tavor_fmr.mtt_base + mtt->first_seg * MTHCA_MTT_SEG_SIZE +
+        mtts = dev->mr_table.tavor_fmr.mtt_base + mtt->first_seg * dev->limits.mtt_seg_size +
                 start_index * sizeof (u64);
         for (i = 0; i < list_len; ++i)
                 mthca_write64_raw(cpu_to_be64(buffer_list[i] | MTHCA_MTT_FLAG_PRESENT),
@@ -345,10 +345,10 @@ static void mthca_arbel_write_mtt_seg(struct mthca_dev *dev,
         /* For Arbel, all MTTs must fit in the same page. */
         BUG_ON(s / PAGE_SIZE != (s + list_len * sizeof(u64) - 1) / PAGE_SIZE);
         /* Require full segments */
-        BUG_ON(s % MTHCA_MTT_SEG_SIZE);
+        BUG_ON(s % dev->limits.mtt_seg_size);
 
         mtts = mthca_table_find(dev->mr_table.mtt_table, mtt->first_seg +
-                                s / MTHCA_MTT_SEG_SIZE, &dma_handle);
+                                s / dev->limits.mtt_seg_size, &dma_handle);
 
         BUG_ON(!mtts);
 
@@ -479,7 +479,7 @@ int mthca_mr_alloc(struct mthca_dev *dev, u32 pd, int buffer_size_shift,
         if (mr->mtt)
                 mpt_entry->mtt_seg =
                         cpu_to_be64(dev->mr_table.mtt_base +
-                                    mr->mtt->first_seg * MTHCA_MTT_SEG_SIZE);
+                                    mr->mtt->first_seg * dev->limits.mtt_seg_size);
 
         if (0) {
                 mthca_dbg(dev, "Dumping MPT entry %08x:\n", mr->ibmr.lkey);
@@ -626,7 +626,7 @@ int mthca_fmr_alloc(struct mthca_dev *dev, u32 pd,
                 goto err_out_table;
         }
 
-        mtt_seg = mr->mtt->first_seg * MTHCA_MTT_SEG_SIZE;
+        mtt_seg = mr->mtt->first_seg * dev->limits.mtt_seg_size;
 
         if (mthca_is_memfree(dev)) {
                 mr->mem.arbel.mtts = mthca_table_find(dev->mr_table.mtt_table,
@@ -908,7 +908,7 @@ int mthca_init_mr_table(struct mthca_dev *dev)
                          dev->mr_table.mtt_base);
 
                 dev->mr_table.tavor_fmr.mtt_base =
-                        ioremap(addr, mtts * MTHCA_MTT_SEG_SIZE);
+                        ioremap(addr, mtts * dev->limits.mtt_seg_size);
                 if (!dev->mr_table.tavor_fmr.mtt_base) {
                         mthca_warn(dev, "MTT ioremap for FMR failed.\n");
                         err = -ENOMEM;
diff --git a/drivers/infiniband/hw/mthca/mthca_profile.c b/drivers/infiniband/hw/mthca/mthca_profile.c
index d168c2540611..8edb28a9a0e7 100644
--- a/drivers/infiniband/hw/mthca/mthca_profile.c
+++ b/drivers/infiniband/hw/mthca/mthca_profile.c
@@ -94,7 +94,7 @@ s64 mthca_make_profile(struct mthca_dev *dev,
         profile[MTHCA_RES_RDB].size  = MTHCA_RDB_ENTRY_SIZE;
         profile[MTHCA_RES_MCG].size  = MTHCA_MGM_ENTRY_SIZE;
         profile[MTHCA_RES_MPT].size  = dev_lim->mpt_entry_sz;
-        profile[MTHCA_RES_MTT].size  = MTHCA_MTT_SEG_SIZE;
+        profile[MTHCA_RES_MTT].size  = dev->limits.mtt_seg_size;
         profile[MTHCA_RES_UAR].size  = dev_lim->uar_scratch_entry_sz;
         profile[MTHCA_RES_UDAV].size = MTHCA_AV_SIZE;
         profile[MTHCA_RES_UARC].size = request->uarc_size;
@@ -232,7 +232,7 @@ s64 mthca_make_profile(struct mthca_dev *dev,
                         dev->limits.num_mtt_segs = profile[i].num;
                         dev->mr_table.mtt_base   = profile[i].start;
                         init_hca->mtt_base       = profile[i].start;
-                        init_hca->mtt_seg_sz     = ffs(MTHCA_MTT_SEG_SIZE) - 7;
+                        init_hca->mtt_seg_sz     = ffs(dev->limits.mtt_seg_size) - 7;
                         break;
                 case MTHCA_RES_UAR:
                         dev->limits.num_uars       = profile[i].num;
diff --git a/drivers/infiniband/hw/nes/nes_hw.c b/drivers/infiniband/hw/nes/nes_hw.c
index b832a7b814a2..4a84d02ece06 100644
--- a/drivers/infiniband/hw/nes/nes_hw.c
+++ b/drivers/infiniband/hw/nes/nes_hw.c
@@ -667,7 +667,7 @@ static unsigned int nes_reset_adapter_ne020(struct nes_device *nesdev, u8 *OneG_
                 i = 0;
                 while (((nes_read32(nesdev->regs+NES_SOFTWARE_RESET) & 0x00000040) == 0) && i++ < 10000)
                         mdelay(1);
-                if (i >= 10000) {
+                if (i > 10000) {
                         nes_debug(NES_DBG_INIT, "Did not see full soft reset done.\n");
                         return 0;
                 }
@@ -675,7 +675,7 @@ static unsigned int nes_reset_adapter_ne020(struct nes_device *nesdev, u8 *OneG_
                 i = 0;
                 while ((nes_read_indexed(nesdev, NES_IDX_INT_CPU_STATUS) != 0x80) && i++ < 10000)
                         mdelay(1);
-                if (i >= 10000) {
+                if (i > 10000) {
                         printk(KERN_ERR PFX "Internal CPU not ready, status = %02X\n",
                                nes_read_indexed(nesdev, NES_IDX_INT_CPU_STATUS));
                         return 0;
@@ -701,7 +701,7 @@ static unsigned int nes_reset_adapter_ne020(struct nes_device *nesdev, u8 *OneG_
         i = 0;
         while (((nes_read32(nesdev->regs+NES_SOFTWARE_RESET) & 0x00000040) == 0) && i++ < 10000)
                 mdelay(1);
-        if (i >= 10000) {
+        if (i > 10000) {
                 nes_debug(NES_DBG_INIT, "Did not see port soft reset done.\n");
                 return 0;
         }
@@ -711,7 +711,7 @@ static unsigned int nes_reset_adapter_ne020(struct nes_device *nesdev, u8 *OneG_
         while (((u32temp = (nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS0)
                         & 0x0000000f)) != 0x0000000f) && i++ < 5000)
                 mdelay(1);
-        if (i >= 5000) {
+        if (i > 5000) {
                 nes_debug(NES_DBG_INIT, "Serdes 0 not ready, status=%x\n", u32temp);
                 return 0;
         }
@@ -722,7 +722,7 @@ static unsigned int nes_reset_adapter_ne020(struct nes_device *nesdev, u8 *OneG_
                 while (((u32temp = (nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS1)
                                 & 0x0000000f)) != 0x0000000f) && i++ < 5000)
                         mdelay(1);
-                if (i >= 5000) {
+                if (i > 5000) {
                         nes_debug(NES_DBG_INIT, "Serdes 1 not ready, status=%x\n", u32temp);
                         return 0;
                 }
@@ -792,7 +792,7 @@ static int nes_init_serdes(struct nes_device *nesdev, u8 hw_rev, u8 port_count,
                 while (((u32temp = (nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS0)
                                 & 0x0000000f)) != 0x0000000f) && i++ < 5000)
                         mdelay(1);
-                if (i >= 5000) {
+                if (i > 5000) {
                         nes_debug(NES_DBG_PHY, "Init: serdes 0 not ready, status=%x\n", u32temp);
                         return 1;
                 }
@@ -815,7 +815,7 @@ static int nes_init_serdes(struct nes_device *nesdev, u8 hw_rev, u8 port_count,
                         while (((u32temp = (nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS1)
                                 & 0x0000000f)) != 0x0000000f) && (i++ < 5000))
                                 mdelay(1);
-                        if (i >= 5000) {
+                        if (i > 5000) {
                                 printk("%s: Init: serdes 1 not ready, status=%x\n", __func__, u32temp);
                                 /* return 1; */
                         }
diff --git a/drivers/net/mlx4/eq.c b/drivers/net/mlx4/eq.c
index 8830dcb92ec8..ce064e324200 100644
--- a/drivers/net/mlx4/eq.c
+++ b/drivers/net/mlx4/eq.c
@@ -497,8 +497,10 @@ static void mlx4_free_irqs(struct mlx4_dev *dev)
         if (eq_table->have_irq)
                 free_irq(dev->pdev->irq, dev);
         for (i = 0; i < dev->caps.num_comp_vectors + 1; ++i)
-                if (eq_table->eq[i].have_irq)
+                if (eq_table->eq[i].have_irq) {
                         free_irq(eq_table->eq[i].irq, eq_table->eq + i);
+                        eq_table->eq[i].have_irq = 0;
+                }
 
         kfree(eq_table->irq_names);
 }
diff --git a/drivers/net/mlx4/main.c b/drivers/net/mlx4/main.c
index 30bea9689694..018348c01193 100644
--- a/drivers/net/mlx4/main.c
+++ b/drivers/net/mlx4/main.c
@@ -100,6 +100,10 @@ module_param_named(use_prio, use_prio, bool, 0444);
 MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports "
                   "(0/1, default 0)");
 
+static int log_mtts_per_seg = ilog2(MLX4_MTT_ENTRY_PER_SEG);
+module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444);
+MODULE_PARM_DESC(log_mtts_per_seg, "Log2 number of MTT entries per segment (1-5)");
+
 int mlx4_check_port_params(struct mlx4_dev *dev,
                            enum mlx4_port_type *port_type)
 {
@@ -203,12 +207,13 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
         dev->caps.max_cqes           = dev_cap->max_cq_sz - 1;
         dev->caps.reserved_cqs       = dev_cap->reserved_cqs;
         dev->caps.reserved_eqs       = dev_cap->reserved_eqs;
+        dev->caps.mtts_per_seg       = 1 << log_mtts_per_seg;
         dev->caps.reserved_mtts      = DIV_ROUND_UP(dev_cap->reserved_mtts,
-                                                    MLX4_MTT_ENTRY_PER_SEG);
+                                                    dev->caps.mtts_per_seg);
         dev->caps.reserved_mrws      = dev_cap->reserved_mrws;
         dev->caps.reserved_uars      = dev_cap->reserved_uars;
         dev->caps.reserved_pds       = dev_cap->reserved_pds;
-        dev->caps.mtt_entry_sz       = MLX4_MTT_ENTRY_PER_SEG * dev_cap->mtt_entry_sz;
+        dev->caps.mtt_entry_sz       = dev->caps.mtts_per_seg * dev_cap->mtt_entry_sz;
         dev->caps.max_msg_sz         = dev_cap->max_msg_sz;
         dev->caps.page_size_cap      = ~(u32) (dev_cap->min_page_sz - 1);
         dev->caps.flags              = dev_cap->flags;
@@ -1304,6 +1309,11 @@ static int __init mlx4_verify_params(void)
                 return -1;
         }
 
+        if ((log_mtts_per_seg < 1) || (log_mtts_per_seg > 5)) {
+                printk(KERN_WARNING "mlx4_core: bad log_mtts_per_seg: %d\n", log_mtts_per_seg);
+                return -1;
+        }
+
         return 0;
 }
 
diff --git a/drivers/net/mlx4/mr.c b/drivers/net/mlx4/mr.c
index 0caf74cae8bc..3b8973d19933 100644
--- a/drivers/net/mlx4/mr.c
+++ b/drivers/net/mlx4/mr.c
@@ -209,7 +209,7 @@ int mlx4_mtt_init(struct mlx4_dev *dev, int npages, int page_shift,
         } else
                 mtt->page_shift = page_shift;
 
-        for (mtt->order = 0, i = MLX4_MTT_ENTRY_PER_SEG; i < npages; i <<= 1)
+        for (mtt->order = 0, i = dev->caps.mtts_per_seg; i < npages; i <<= 1)
                 ++mtt->order;
 
         mtt->first_seg = mlx4_alloc_mtt_range(dev, mtt->order);
@@ -350,7 +350,7 @@ int mlx4_mr_enable(struct mlx4_dev *dev, struct mlx4_mr *mr)
                 mpt_entry->pd_flags |= cpu_to_be32(MLX4_MPT_PD_FLAG_FAST_REG |
                                                    MLX4_MPT_PD_FLAG_RAE);
                 mpt_entry->mtt_sz    = cpu_to_be32((1 << mr->mtt.order) *
-                                                   MLX4_MTT_ENTRY_PER_SEG);
+                                                   dev->caps.mtts_per_seg);
         } else {
                 mpt_entry->flags    |= cpu_to_be32(MLX4_MPT_FLAG_SW_OWNS);
         }
@@ -391,7 +391,7 @@ static int mlx4_write_mtt_chunk(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
             (start_index + npages - 1) / (PAGE_SIZE / sizeof (u64)))
                 return -EINVAL;
 
-        if (start_index & (MLX4_MTT_ENTRY_PER_SEG - 1))
+        if (start_index & (dev->caps.mtts_per_seg - 1))
                 return -EINVAL;
 
         mtts = mlx4_table_find(&priv->mr_table.mtt_table, mtt->first_seg +
diff --git a/drivers/net/mlx4/profile.c b/drivers/net/mlx4/profile.c
index cebdf3243ca1..bd22df95adf9 100644
--- a/drivers/net/mlx4/profile.c
+++ b/drivers/net/mlx4/profile.c
@@ -98,7 +98,7 @@ u64 mlx4_make_profile(struct mlx4_dev *dev,
         profile[MLX4_RES_EQ].size     = dev_cap->eqc_entry_sz;
         profile[MLX4_RES_DMPT].size   = dev_cap->dmpt_entry_sz;
         profile[MLX4_RES_CMPT].size   = dev_cap->cmpt_entry_sz;
-        profile[MLX4_RES_MTT].size    = MLX4_MTT_ENTRY_PER_SEG * dev_cap->mtt_entry_sz;
+        profile[MLX4_RES_MTT].size    = dev->caps.mtts_per_seg * dev_cap->mtt_entry_sz;
         profile[MLX4_RES_MCG].size    = MLX4_MGM_ENTRY_SIZE;
 
         profile[MLX4_RES_QP].num      = request->num_qp;