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

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  mlx4_core: Don't double-free IRQs when falling back from MSI-X to INTx
  IB/mthca: Don't double-free IRQs when falling back from MSI-X to INTx
  IB/mlx4: Add strong ordering to local inval and fast reg work requests
  IB/ehca: Remove superfluous bitmasks from QP control block
  RDMA/cxgb3: Limit fast register size based on T3 limitations
  RDMA/cxgb3: Report correct port state and MTU
  mlx4_core: Add module parameter for number of MTTs per segment
  IB/mthca: Add module parameter for number of MTTs per segment
  RDMA/nes: Fix off-by-one bugs in reset_adapter_ne020() and init_serdes()
  infiniband: Remove void casts
  IB/ehca: Increment version number
  IB/ehca: Remove unnecessary memory operations for userspace queue pairs
  IB/ehca: Fall back to vmalloc() for big allocations
  IB/ehca: Replace vmalloc() with kmalloc() for queue allocation

drivers/infiniband/hw/amso1100/c2_cq.c

@@ -133,7 +133,7 @@ static inline int c2_poll_one(struct c2_dev *c2dev,
 	struct c2_qp *qp;
 	int is_recv = 0;
 
-	ce = (struct c2wr_ce *) c2_mq_consume(&cq->mq);
+	ce = c2_mq_consume(&cq->mq);
 	if (!ce) {
 		return -EAGAIN;
 	}
@@ -146,7 +146,7 @@ static inline int c2_poll_one(struct c2_dev *c2dev,
 	while ((qp =
 		(struct c2_qp *) (unsigned long) ce->qp_user_context) == NULL) {
 		c2_mq_free(&cq->mq);
-		ce = (struct c2wr_ce *) c2_mq_consume(&cq->mq);
+		ce = c2_mq_consume(&cq->mq);
 		if (!ce)
 			return -EAGAIN;
 	}

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 {

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 |

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)
 

drivers/infiniband/hw/ehca/ehca_irq.c

@@ -479,13 +479,13 @@ void ehca_tasklet_neq(unsigned long data)
 	struct ehca_eqe *eqe;
 	u64 ret;
 
-	eqe = (struct ehca_eqe *)ehca_poll_eq(shca, &shca->neq);
+	eqe = ehca_poll_eq(shca, &shca->neq);
 
 	while (eqe) {
 		if (!EHCA_BMASK_GET(NEQE_COMPLETION_EVENT, eqe->entry))
 			parse_ec(shca, eqe->entry);
 
-		eqe = (struct ehca_eqe *)ehca_poll_eq(shca, &shca->neq);
+		eqe = ehca_poll_eq(shca, &shca->neq);
 	}
 
 	ret = hipz_h_reset_event(shca->ipz_hca_handle,
@@ -572,8 +572,7 @@ void ehca_process_eq(struct ehca_shca *shca, int is_irq)
 	eqe_cnt = 0;
 	do {
 		u32 token;
-		eqe_cache[eqe_cnt].eqe =
-			(struct ehca_eqe *)ehca_poll_eq(shca, eq);
+		eqe_cache[eqe_cnt].eqe = ehca_poll_eq(shca, eq);
 		if (!eqe_cache[eqe_cnt].eqe)
 			break;
 		eqe_value = eqe_cache[eqe_cnt].eqe->entry;
@@ -637,7 +636,7 @@ void ehca_process_eq(struct ehca_shca *shca, int is_irq)
 		goto unlock_irq_spinlock;
 	do {
 		struct ehca_eqe *eqe;
-		eqe = (struct ehca_eqe *)ehca_poll_eq(shca, &shca->eq);
+		eqe = ehca_poll_eq(shca, &shca->eq);
 		if (!eqe)
 			break;
 		process_eqe(shca, eqe);

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>");

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 @@ static struct ehca_qp *internal_create_qp(
 	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 @@ static struct ehca_qp *internal_create_qp(
 		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);

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);

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,

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;
 

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);

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;
 }

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;

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);

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;

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,

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)

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;

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;

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; */
 			}

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);
 }

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;
 }
 

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 +

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;

include/linux/mlx4/device.h

@@ -210,6 +210,7 @@ struct mlx4_caps {
 	int			num_comp_vectors;
 	int			num_mpts;
 	int			num_mtt_segs;
+	int			mtts_per_seg;
 	int			fmr_reserved_mtts;
 	int			reserved_mtts;
 	int			reserved_mrws;

include/linux/mlx4/qp.h

@@ -165,6 +165,7 @@ enum {
 	MLX4_WQE_CTRL_IP_CSUM		= 1 << 4,
 	MLX4_WQE_CTRL_TCP_UDP_CSUM	= 1 << 5,
 	MLX4_WQE_CTRL_INS_VLAN		= 1 << 6,
+	MLX4_WQE_CTRL_STRONG_ORDER	= 1 << 7,
 };
 
 struct mlx4_wqe_ctrl_seg {