13 files changed, 111 insertions, 61 deletions

diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 493f4c65c7a2..a72bcea46ff6 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -1750,7 +1750,7 @@ ib_find_send_mad(struct ib_mad_agent_private *mad_agent_priv,
                      */
                     (is_direct(wc->recv_buf.mad->mad_hdr.mgmt_class) ||
                      rcv_has_same_gid(mad_agent_priv, wr, wc)))
-                        return wr;
+                        return (wr->status == IB_WC_SUCCESS) ? wr : NULL;
         }
 
         /*
diff --git a/drivers/infiniband/hw/amso1100/c2.c b/drivers/infiniband/hw/amso1100/c2.c
index 9e7bd94b958a..27fe242ed435 100644
--- a/drivers/infiniband/hw/amso1100/c2.c
+++ b/drivers/infiniband/hw/amso1100/c2.c
@@ -1155,7 +1155,8 @@ static int __devinit c2_probe(struct pci_dev *pcidev,
                 goto bail10;
         }
 
-        c2_register_device(c2dev);
+        if (c2_register_device(c2dev))
+                goto bail10;
 
         return 0;
 
diff --git a/drivers/infiniband/hw/amso1100/c2_provider.c b/drivers/infiniband/hw/amso1100/c2_provider.c
index da98d9f71429..fef972752912 100644
--- a/drivers/infiniband/hw/amso1100/c2_provider.c
+++ b/drivers/infiniband/hw/amso1100/c2_provider.c
@@ -757,20 +757,17 @@ static struct net_device *c2_pseudo_netdev_init(struct c2_dev *c2dev)
 
 int c2_register_device(struct c2_dev *dev)
 {
-        int ret;
+        int ret = -ENOMEM;
         int i;
 
         /* Register pseudo network device */
         dev->pseudo_netdev = c2_pseudo_netdev_init(dev);
-        if (dev->pseudo_netdev) {
-                ret = register_netdev(dev->pseudo_netdev);
-                if (ret) {
-                        printk(KERN_ERR PFX
-                                "Unable to register netdev, ret = %d\n", ret);
-                        free_netdev(dev->pseudo_netdev);
-                        return ret;
-                }
-        }
+        if (!dev->pseudo_netdev)
+                goto out3;
+
+        ret = register_netdev(dev->pseudo_netdev);
+        if (ret)
+                goto out2;
 
         pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
         strlcpy(dev->ibdev.name, "amso%d", IB_DEVICE_NAME_MAX);
@@ -848,21 +845,25 @@ int c2_register_device(struct c2_dev *dev)
 
         ret = ib_register_device(&dev->ibdev);
         if (ret)
-                return ret;
+                goto out1;
 
         for (i = 0; i < ARRAY_SIZE(c2_class_attributes); ++i) {
                 ret = class_device_create_file(&dev->ibdev.class_dev,
                                                c2_class_attributes[i]);
-                if (ret) {
-                        unregister_netdev(dev->pseudo_netdev);
-                        free_netdev(dev->pseudo_netdev);
-                        ib_unregister_device(&dev->ibdev);
-                        return ret;
-                }
+                if (ret)
+                        goto out0;
         }
+        goto out3;
 
-        pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
-        return 0;
+out0:
+        ib_unregister_device(&dev->ibdev);
+out1:
+        unregister_netdev(dev->pseudo_netdev);
+out2:
+        free_netdev(dev->pseudo_netdev);
+out3:
+        pr_debug("%s:%u ret=%d\n", __FUNCTION__, __LINE__, ret);
+        return ret;
 }
 
 void c2_unregister_device(struct c2_dev *dev)
diff --git a/drivers/infiniband/hw/amso1100/c2_rnic.c b/drivers/infiniband/hw/amso1100/c2_rnic.c
index 21d9612a56cc..623dc95f91df 100644
--- a/drivers/infiniband/hw/amso1100/c2_rnic.c
+++ b/drivers/infiniband/hw/amso1100/c2_rnic.c
@@ -157,8 +157,8 @@ static int c2_rnic_query(struct c2_dev *c2dev, struct ib_device_attr *props)
 
         props->fw_ver =
                 ((u64)be32_to_cpu(reply->fw_ver_major) << 32) |
-                ((be32_to_cpu(reply->fw_ver_minor) && 0xFFFF) << 16) |
-                (be32_to_cpu(reply->fw_ver_patch) && 0xFFFF);
+                ((be32_to_cpu(reply->fw_ver_minor) & 0xFFFF) << 16) |
+                (be32_to_cpu(reply->fw_ver_patch) & 0xFFFF);
         memcpy(&props->sys_image_guid, c2dev->netdev->dev_addr, 6);
         props->max_mr_size         = 0xFFFFFFFF;
         props->page_size_cap       = ~(C2_MIN_PAGESIZE-1);
diff --git a/drivers/infiniband/hw/ehca/Kconfig b/drivers/infiniband/hw/ehca/Kconfig
index 922389b64394..727b10d89686 100644
--- a/drivers/infiniband/hw/ehca/Kconfig
+++ b/drivers/infiniband/hw/ehca/Kconfig
@@ -10,6 +10,7 @@ config INFINIBAND_EHCA
 config INFINIBAND_EHCA_SCALING
         bool "Scaling support (EXPERIMENTAL)"
         depends on IBMEBUS && INFINIBAND_EHCA && HOTPLUG_CPU && EXPERIMENTAL
+        default y
         ---help---
         eHCA scaling support schedules the CQ callbacks to different CPUs.
 
diff --git a/drivers/infiniband/hw/ehca/ehca_av.c b/drivers/infiniband/hw/ehca/ehca_av.c
index 3bac197f9014..214e2fdddeef 100644
--- a/drivers/infiniband/hw/ehca/ehca_av.c
+++ b/drivers/infiniband/hw/ehca/ehca_av.c
@@ -118,8 +118,7 @@ struct ib_ah *ehca_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
                 }
                 memcpy(&av->av.grh.word_1, &gid, sizeof(gid));
         }
-        /* for the time being we use a hard coded PMTU of 2048 Bytes */
-        av->av.pmtu = 4;
+        av->av.pmtu = EHCA_MAX_MTU;
 
         /* dgid comes in grh.word_3 */
         memcpy(&av->av.grh.word_3, &ah_attr->grh.dgid,
@@ -193,7 +192,7 @@ int ehca_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
                 memcpy(&new_ehca_av.grh.word_1, &gid, sizeof(gid));
         }
 
-        new_ehca_av.pmtu = 4; /* see also comment in create_ah() */
+        new_ehca_av.pmtu = EHCA_MAX_MTU;
 
         memcpy(&new_ehca_av.grh.word_3, &ah_attr->grh.dgid,
                sizeof(ah_attr->grh.dgid));
diff --git a/drivers/infiniband/hw/ehca/ehca_hca.c b/drivers/infiniband/hw/ehca/ehca_hca.c
index 5eae6ac48425..e1b618c5f685 100644
--- a/drivers/infiniband/hw/ehca/ehca_hca.c
+++ b/drivers/infiniband/hw/ehca/ehca_hca.c
@@ -40,6 +40,7 @@
  */
 
 #include "ehca_tools.h"
+#include "ehca_iverbs.h"
 #include "hcp_if.h"
 
 int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
@@ -49,7 +50,7 @@ int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
                                               ib_device);
         struct hipz_query_hca *rblock;
 
-        rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+        rblock = ehca_alloc_fw_ctrlblock();
         if (!rblock) {
                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
                 return -ENOMEM;
@@ -96,7 +97,7 @@ int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
                 = min_t(int, rblock->max_total_mcast_qp_attach, INT_MAX);
 
 query_device1:
-        kfree(rblock);
+        ehca_free_fw_ctrlblock(rblock);
 
         return ret;
 }
@@ -109,7 +110,7 @@ int ehca_query_port(struct ib_device *ibdev,
                                               ib_device);
         struct hipz_query_port *rblock;
 
-        rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+        rblock = ehca_alloc_fw_ctrlblock();
         if (!rblock) {
                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
                 return -ENOMEM;
@@ -162,7 +163,7 @@ int ehca_query_port(struct ib_device *ibdev,
         props->active_speed    = 0x1;
 
 query_port1:
-        kfree(rblock);
+        ehca_free_fw_ctrlblock(rblock);
 
         return ret;
 }
@@ -178,7 +179,7 @@ int ehca_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
                 return -EINVAL;
         }
 
-        rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+        rblock = ehca_alloc_fw_ctrlblock();
         if (!rblock) {
                 ehca_err(&shca->ib_device,  "Can't allocate rblock memory.");
                 return -ENOMEM;
@@ -193,7 +194,7 @@ int ehca_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
         memcpy(pkey, &rblock->pkey_entries + index, sizeof(u16));
 
 query_pkey1:
-        kfree(rblock);
+        ehca_free_fw_ctrlblock(rblock);
 
         return ret;
 }
@@ -211,7 +212,7 @@ int ehca_query_gid(struct ib_device *ibdev, u8 port,
                 return -EINVAL;
         }
 
-        rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+        rblock = ehca_alloc_fw_ctrlblock();
         if (!rblock) {
                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
                 return -ENOMEM;
@@ -227,7 +228,7 @@ int ehca_query_gid(struct ib_device *ibdev, u8 port,
         memcpy(&gid->raw[8], &rblock->guid_entries[index], sizeof(u64));
 
 query_gid1:
-        kfree(rblock);
+        ehca_free_fw_ctrlblock(rblock);
 
         return ret;
 }
diff --git a/drivers/infiniband/hw/ehca/ehca_irq.c b/drivers/infiniband/hw/ehca/ehca_irq.c
index 048cc443d1e7..c3ea746e9045 100644
--- a/drivers/infiniband/hw/ehca/ehca_irq.c
+++ b/drivers/infiniband/hw/ehca/ehca_irq.c
@@ -45,6 +45,7 @@
 #include "ehca_tools.h"
 #include "hcp_if.h"
 #include "hipz_fns.h"
+#include "ipz_pt_fn.h"
 
 #define EQE_COMPLETION_EVENT   EHCA_BMASK_IBM(1,1)
 #define EQE_CQ_QP_NUMBER       EHCA_BMASK_IBM(8,31)
@@ -137,38 +138,36 @@ int ehca_error_data(struct ehca_shca *shca, void *data,
         u64 *rblock;
         unsigned long block_count;
 
-        rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+        rblock = ehca_alloc_fw_ctrlblock();
         if (!rblock) {
                 ehca_err(&shca->ib_device, "Cannot allocate rblock memory.");
                 ret = -ENOMEM;
                 goto error_data1;
         }
 
+        /* rblock must be 4K aligned and should be 4K large */
         ret = hipz_h_error_data(shca->ipz_hca_handle,
                                 resource,
                                 rblock,
                                 &block_count);
 
-        if (ret == H_R_STATE) {
+        if (ret == H_R_STATE)
                 ehca_err(&shca->ib_device,
                          "No error data is available: %lx.", resource);
-        }
         else if (ret == H_SUCCESS) {
                 int length;
 
                 length = EHCA_BMASK_GET(ERROR_DATA_LENGTH, rblock[0]);
 
-                if (length > PAGE_SIZE)
-                        length = PAGE_SIZE;
+                if (length > EHCA_PAGESIZE)
+                        length = EHCA_PAGESIZE;
 
                 print_error_data(shca, data, rblock, length);
-        }
-        else {
+        } else
                 ehca_err(&shca->ib_device,
                          "Error data could not be fetched: %lx", resource);
-        }
 
-        kfree(rblock);
+        ehca_free_fw_ctrlblock(rblock);
 
 error_data1:
         return ret;
diff --git a/drivers/infiniband/hw/ehca/ehca_iverbs.h b/drivers/infiniband/hw/ehca/ehca_iverbs.h
index 319c39d47f3a..3720e3032cce 100644
--- a/drivers/infiniband/hw/ehca/ehca_iverbs.h
+++ b/drivers/infiniband/hw/ehca/ehca_iverbs.h
@@ -179,4 +179,12 @@ int ehca_mmap_register(u64 physical,void **mapped,
 
 int ehca_munmap(unsigned long addr, size_t len);
 
+#ifdef CONFIG_PPC_64K_PAGES
+void *ehca_alloc_fw_ctrlblock(void);
+void ehca_free_fw_ctrlblock(void *ptr);
+#else
+#define ehca_alloc_fw_ctrlblock() ((void *) get_zeroed_page(GFP_KERNEL))
+#define ehca_free_fw_ctrlblock(ptr) free_page((unsigned long)(ptr))
+#endif
+
 #endif
diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c
index 024d511c4b58..01f5aa9cb56d 100644
--- a/drivers/infiniband/hw/ehca/ehca_main.c
+++ b/drivers/infiniband/hw/ehca/ehca_main.c
@@ -40,6 +40,9 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
+#ifdef CONFIG_PPC_64K_PAGES
+#include <linux/slab.h>
+#endif
 #include "ehca_classes.h"
 #include "ehca_iverbs.h"
 #include "ehca_mrmw.h"
@@ -49,7 +52,7 @@
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
 MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver");
-MODULE_VERSION("SVNEHCA_0017");
+MODULE_VERSION("SVNEHCA_0018");
 
 int ehca_open_aqp1     = 0;
 int ehca_debug_level   = 0;
@@ -94,11 +97,31 @@ spinlock_t ehca_cq_idr_lock;
 DEFINE_IDR(ehca_qp_idr);
 DEFINE_IDR(ehca_cq_idr);
 
+
 static struct list_head shca_list; /* list of all registered ehcas */
 static spinlock_t shca_list_lock;
 
 static struct timer_list poll_eqs_timer;
 
+#ifdef CONFIG_PPC_64K_PAGES
+static struct kmem_cache *ctblk_cache = NULL;
+
+void *ehca_alloc_fw_ctrlblock(void)
+{
+        void *ret = kmem_cache_zalloc(ctblk_cache, SLAB_KERNEL);
+        if (!ret)
+                ehca_gen_err("Out of memory for ctblk");
+        return ret;
+}
+
+void ehca_free_fw_ctrlblock(void *ptr)
+{
+        if (ptr)
+                kmem_cache_free(ctblk_cache, ptr);
+
+}
+#endif
+
 static int ehca_create_slab_caches(void)
 {
         int ret;
@@ -133,6 +156,17 @@ static int ehca_create_slab_caches(void)
                 goto create_slab_caches5;
         }
 
+#ifdef CONFIG_PPC_64K_PAGES
+        ctblk_cache = kmem_cache_create("ehca_cache_ctblk",
+                                        EHCA_PAGESIZE, H_CB_ALIGNMENT,
+                                        SLAB_HWCACHE_ALIGN,
+                                        NULL, NULL);
+        if (!ctblk_cache) {
+                ehca_gen_err("Cannot create ctblk SLAB cache.");
+                ehca_cleanup_mrmw_cache();
+                goto create_slab_caches5;
+        }
+#endif
         return 0;
 
 create_slab_caches5:
@@ -157,6 +191,10 @@ static void ehca_destroy_slab_caches(void)
         ehca_cleanup_qp_cache();
         ehca_cleanup_cq_cache();
         ehca_cleanup_pd_cache();
+#ifdef CONFIG_PPC_64K_PAGES
+        if (ctblk_cache)
+                kmem_cache_destroy(ctblk_cache);
+#endif
 }
 
 #define EHCA_HCAAVER  EHCA_BMASK_IBM(32,39)
@@ -168,7 +206,7 @@ int ehca_sense_attributes(struct ehca_shca *shca)
         u64 h_ret;
         struct hipz_query_hca *rblock;
 
-        rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+        rblock = ehca_alloc_fw_ctrlblock();
         if (!rblock) {
                 ehca_gen_err("Cannot allocate rblock memory.");
                 return -ENOMEM;
@@ -211,7 +249,7 @@ int ehca_sense_attributes(struct ehca_shca *shca)
         shca->sport[1].rate = IB_RATE_30_GBPS;
 
 num_ports1:
-        kfree(rblock);
+        ehca_free_fw_ctrlblock(rblock);
         return ret;
 }
 
@@ -220,7 +258,7 @@ static int init_node_guid(struct ehca_shca *shca)
         int ret = 0;
         struct hipz_query_hca *rblock;
 
-        rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+        rblock = ehca_alloc_fw_ctrlblock();
         if (!rblock) {
                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
                 return -ENOMEM;
@@ -235,7 +273,7 @@ static int init_node_guid(struct ehca_shca *shca)
         memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64));
 
 init_node_guid1:
-        kfree(rblock);
+        ehca_free_fw_ctrlblock(rblock);
         return ret;
 }
 
@@ -431,7 +469,7 @@ static ssize_t  ehca_show_##name(struct device *dev,                       \
                                                                            \
         shca = dev->driver_data;                                           \
                                                                            \
-        rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);                      \
+        rblock = ehca_alloc_fw_ctrlblock();                                \
         if (!rblock) {                                                     \
                 dev_err(dev, "Can't allocate rblock memory.");             \
                 return 0;                                                  \
@@ -439,12 +477,12 @@ static ssize_t  ehca_show_##name(struct device *dev,                       \
                                                                            \
         if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
                 dev_err(dev, "Can't query device properties");             \
-                kfree(rblock);                                             \
+                ehca_free_fw_ctrlblock(rblock);                            \
                 return 0;                                                  \
         }                                                                  \
                                                                            \
         data = rblock->name;                                               \
-        kfree(rblock);                                                     \
+        ehca_free_fw_ctrlblock(rblock);                                    \
                                                                            \
         if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1))     \
                 return snprintf(buf, 256, "1\n");                          \
@@ -752,7 +790,7 @@ int __init ehca_module_init(void)
         int ret;
 
         printk(KERN_INFO "eHCA Infiniband Device Driver "
-                         "(Rel.: SVNEHCA_0017)\n");
+                         "(Rel.: SVNEHCA_0018)\n");
         idr_init(&ehca_qp_idr);
         idr_init(&ehca_cq_idr);
         spin_lock_init(&ehca_qp_idr_lock);
diff --git a/drivers/infiniband/hw/ehca/ehca_mrmw.c b/drivers/infiniband/hw/ehca/ehca_mrmw.c
index 5ca65441e1da..abce676c0ae0 100644
--- a/drivers/infiniband/hw/ehca/ehca_mrmw.c
+++ b/drivers/infiniband/hw/ehca/ehca_mrmw.c
@@ -1013,7 +1013,7 @@ int ehca_reg_mr_rpages(struct ehca_shca *shca,
         u32 i;
         u64 *kpage;
 
-        kpage = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+        kpage = ehca_alloc_fw_ctrlblock();
         if (!kpage) {
                 ehca_err(&shca->ib_device, "kpage alloc failed");
                 ret = -ENOMEM;
@@ -1092,7 +1092,7 @@ int ehca_reg_mr_rpages(struct ehca_shca *shca,
 
 
 ehca_reg_mr_rpages_exit1:
-        kfree(kpage);
+        ehca_free_fw_ctrlblock(kpage);
 ehca_reg_mr_rpages_exit0:
         if (ret)
                 ehca_err(&shca->ib_device, "ret=%x shca=%p e_mr=%p pginfo=%p "
@@ -1124,7 +1124,7 @@ inline int ehca_rereg_mr_rereg1(struct ehca_shca *shca,
         ehca_mrmw_map_acl(acl, &hipz_acl);
         ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl);
 
-        kpage = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+        kpage = ehca_alloc_fw_ctrlblock();
         if (!kpage) {
                 ehca_err(&shca->ib_device, "kpage alloc failed");
                 ret = -ENOMEM;
@@ -1181,7 +1181,7 @@ inline int ehca_rereg_mr_rereg1(struct ehca_shca *shca,
         }
 
 ehca_rereg_mr_rereg1_exit1:
-        kfree(kpage);
+        ehca_free_fw_ctrlblock(kpage);
 ehca_rereg_mr_rereg1_exit0:
         if ( ret && (ret != -EAGAIN) )
                 ehca_err(&shca->ib_device, "ret=%x lkey=%x rkey=%x "
diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c
index 4394123cdbd7..cf3e50ee2d06 100644
--- a/drivers/infiniband/hw/ehca/ehca_qp.c
+++ b/drivers/infiniband/hw/ehca/ehca_qp.c
@@ -811,8 +811,8 @@ static int internal_modify_qp(struct ib_qp *ibqp,
         unsigned long spl_flags = 0;
 
         /* do query_qp to obtain current attr values */
-        mqpcb = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
-        if (mqpcb == NULL) {
+        mqpcb = ehca_alloc_fw_ctrlblock();
+        if (!mqpcb) {
                 ehca_err(ibqp->device, "Could not get zeroed page for mqpcb "
                          "ehca_qp=%p qp_num=%x ", my_qp, ibqp->qp_num);
                 return -ENOMEM;
@@ -1225,7 +1225,7 @@ modify_qp_exit2:
         }
 
 modify_qp_exit1:
-        kfree(mqpcb);
+        ehca_free_fw_ctrlblock(mqpcb);
 
         return ret;
 }
@@ -1277,7 +1277,7 @@ int ehca_query_qp(struct ib_qp *qp,
                 return -EINVAL;
         }
 
-        qpcb = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL );
+        qpcb = ehca_alloc_fw_ctrlblock();
         if (!qpcb) {
                 ehca_err(qp->device,"Out of memory for qpcb "
                          "ehca_qp=%p qp_num=%x", my_qp, qp->qp_num);
@@ -1401,7 +1401,7 @@ int ehca_query_qp(struct ib_qp *qp,
                 ehca_dmp(qpcb, 4*70, "qp_num=%x", qp->qp_num);
 
 query_qp_exit1:
-        kfree(qpcb);
+        ehca_free_fw_ctrlblock(qpcb);
 
         return ret;
 }
diff --git a/drivers/infiniband/hw/ehca/hipz_hw.h b/drivers/infiniband/hw/ehca/hipz_hw.h
index 3fc92b031c50..fad91368dc5a 100644
--- a/drivers/infiniband/hw/ehca/hipz_hw.h
+++ b/drivers/infiniband/hw/ehca/hipz_hw.h
@@ -45,6 +45,8 @@
 
 #include "ehca_tools.h"
 
+#define EHCA_MAX_MTU 4
+
 /* QP Table Entry Memory Map */
 struct hipz_qptemm {
         u64 qpx_hcr;