IB/core: Change port_attr.lid size from 16 to 32 bits

lid field in struct ib_port_attr is increased to 32 bits. This enables core
components to use larger LIDs if needed.
The user ABI is unchanged and return 16 bit values when queried.

Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/core/core_priv.h b/drivers/infiniband/core/core_priv.h
index 11ae675..6b54280 100644 (file)
--- a/drivers/infiniband/core/core_priv.h
+++ b/drivers/infiniband/core/core_priv.h
@@ -38,6 +38,7 @@
 #include <linux/cgroup_rdma.h>
 
 #include <rdma/ib_verbs.h>
+#include <rdma/opa_addr.h>
 #include <rdma/ib_mad.h>
 #include "mad_priv.h"
 

diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 2c98533..eef2623 100644 (file)
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -275,8 +275,11 @@ ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file,
        resp.bad_pkey_cntr   = attr.bad_pkey_cntr;
        resp.qkey_viol_cntr  = attr.qkey_viol_cntr;
        resp.pkey_tbl_len    = attr.pkey_tbl_len;
-       resp.lid             = attr.lid;
        resp.sm_lid          = attr.sm_lid;
+       if (rdma_cap_opa_ah(ib_dev, cmd.port_num))
+               resp.lid  = OPA_TO_IB_UCAST_LID(attr.lid);
+       else
+               resp.lid     = (u16)attr.lid;
        resp.lmc             = attr.lmc;
        resp.max_vl_num      = attr.max_vl_num;
        resp.sm_sl           = attr.sm_sl;

diff --git a/drivers/infiniband/hw/mlx4/alias_GUID.c b/drivers/infiniband/hw/mlx4/alias_GUID.c
index ea24230..5a897b0 100644 (file)
--- a/drivers/infiniband/hw/mlx4/alias_GUID.c
+++ b/drivers/infiniband/hw/mlx4/alias_GUID.c
@@ -528,7 +528,7 @@ static int set_guid_rec(struct ib_device *ibdev,
 
        memset(&guid_info_rec, 0, sizeof (struct ib_sa_guidinfo_rec));
 
-       guid_info_rec.lid = cpu_to_be16(attr.lid);
+       guid_info_rec.lid = cpu_to_be16((u16)attr.lid);
        guid_info_rec.block_num = index;
 
        memcpy(guid_info_rec.guid_info_list, rec_det->all_recs,

diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index 21d31cb..00f0570 100644 (file)
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -860,7 +860,7 @@ static int ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
            in_mad->mad_hdr.method == IB_MGMT_METHOD_SET &&
            in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO &&
            !ib_query_port(ibdev, port_num, &pattr))
-               prev_lid = pattr.lid;
+               prev_lid = (u16)pattr.lid;
 
        err = mlx4_MAD_IFC(to_mdev(ibdev),
                           (mad_flags & IB_MAD_IGNORE_MKEY ? MLX4_MAD_IFC_IGNORE_MKEY : 0) |

diff --git a/drivers/infiniband/hw/mthca/mthca_mad.c b/drivers/infiniband/hw/mthca/mthca_mad.c
index 7df3db7..617531f 100644 (file)
--- a/drivers/infiniband/hw/mthca/mthca_mad.c
+++ b/drivers/infiniband/hw/mthca/mthca_mad.c
@@ -256,7 +256,7 @@ int mthca_process_mad(struct ib_device *ibdev,
            in_mad->mad_hdr.method == IB_MGMT_METHOD_SET &&
            in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO &&
            !ib_query_port(ibdev, port_num, &pattr))
-               prev_lid = pattr.lid;
+               prev_lid = (u16)pattr.lid;
 
        err = mthca_MAD_IFC(to_mdev(ibdev),
                            mad_flags & IB_MAD_IGNORE_MKEY,

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index b573243..4fa94e6 100644 (file)
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -549,8 +549,8 @@ struct ib_port_attr {
        u32                     bad_pkey_cntr;
        u32                     qkey_viol_cntr;
        u16                     pkey_tbl_len;
-       u16                     lid;
        u16                     sm_lid;
+       u32                     lid;
        u8                      lmc;
        u8                      max_vl_num;
        u8                      sm_sl;

diff --git a/include/rdma/opa_addr.h b/include/rdma/opa_addr.h
index eace28f..46d0567 100644 (file)
--- a/include/rdma/opa_addr.h
+++ b/include/rdma/opa_addr.h
@@ -50,7 +50,8 @@
 
 #define        OPA_SPECIAL_OUI         (0x00066AULL)
 #define OPA_MAKE_ID(x)          (cpu_to_be64(OPA_SPECIAL_OUI << 40 | (x)))
-
+#define OPA_TO_IB_UCAST_LID(x) (((x) >= be16_to_cpu(IB_MULTICAST_LID_BASE)) \
+                               ? 0 : x)
 /**
  * ib_is_opa_gid: Returns true if the top 24 bits of the gid
  * contains the OPA_STL_OUI identifier. This identifies that