IB/core: Change wc.slid from 16 to 32 bits

slid field in struct ib_wc 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/cm.c b/drivers/infiniband/core/cm.c
index 2b4d613..b39ee16 100644 (file)
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -1703,7 +1703,7 @@ static void cm_process_routed_req(struct cm_req_msg *req_msg, struct ib_wc *wc)
 {
        if (!cm_req_get_primary_subnet_local(req_msg)) {
                if (req_msg->primary_local_lid == IB_LID_PERMISSIVE) {
-                       req_msg->primary_local_lid = cpu_to_be16(wc->slid);
+                       req_msg->primary_local_lid = ib_slid_be16(wc->slid);
                        cm_req_set_primary_sl(req_msg, wc->sl);
                }
 
@@ -1713,7 +1713,7 @@ static void cm_process_routed_req(struct cm_req_msg *req_msg, struct ib_wc *wc)
 
        if (!cm_req_get_alt_subnet_local(req_msg)) {
                if (req_msg->alt_local_lid == IB_LID_PERMISSIVE) {
-                       req_msg->alt_local_lid = cpu_to_be16(wc->slid);
+                       req_msg->alt_local_lid = ib_slid_be16(wc->slid);
                        cm_req_set_alt_sl(req_msg, wc->sl);
                }
 

diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index 36a6f5c..ff3c67a 100644 (file)
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -229,7 +229,7 @@ static void recv_handler(struct ib_mad_agent *agent,
        packet->mad.hdr.status     = 0;
        packet->mad.hdr.length     = hdr_size(file) + mad_recv_wc->mad_len;
        packet->mad.hdr.qpn        = cpu_to_be32(mad_recv_wc->wc->src_qp);
-       packet->mad.hdr.lid        = cpu_to_be16(mad_recv_wc->wc->slid);
+       packet->mad.hdr.lid        = ib_slid_be16(mad_recv_wc->wc->slid);
        packet->mad.hdr.sl         = mad_recv_wc->wc->sl;
        packet->mad.hdr.path_bits  = mad_recv_wc->wc->dlid_path_bits;
        packet->mad.hdr.pkey_index = mad_recv_wc->wc->pkey_index;

diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 01e2ff0..eb0da37 100644 (file)
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -1190,7 +1190,8 @@ out:
        return ret ? ret : in_len;
 }
 
-static int copy_wc_to_user(void __user *dest, struct ib_wc *wc)
+static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest,
+                          struct ib_wc *wc)
 {
        struct ib_uverbs_wc tmp;
 
@@ -1204,7 +1205,10 @@ static int copy_wc_to_user(void __user *dest, struct ib_wc *wc)
        tmp.src_qp              = wc->src_qp;
        tmp.wc_flags            = wc->wc_flags;
        tmp.pkey_index          = wc->pkey_index;
-       tmp.slid                = wc->slid;
+       if (rdma_cap_opa_ah(ib_dev, wc->port_num))
+               tmp.slid  = OPA_TO_IB_UCAST_LID(wc->slid);
+       else
+               tmp.slid  = ib_slid_cpu16(wc->slid);
        tmp.sl                  = wc->sl;
        tmp.dlid_path_bits      = wc->dlid_path_bits;
        tmp.port_num            = wc->port_num;
@@ -1248,7 +1252,7 @@ ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file,
                if (!ret)
                        break;
 
-               ret = copy_wc_to_user(data_ptr, &wc);
+               ret = copy_wc_to_user(ib_dev, data_ptr, &wc);
                if (ret)
                        goto out_put;
 

diff --git a/drivers/infiniband/hw/hfi1/mad.c b/drivers/infiniband/hw/hfi1/mad.c
index 5977673..00ebc26 100644 (file)
--- a/drivers/infiniband/hw/hfi1/mad.c
+++ b/drivers/infiniband/hw/hfi1/mad.c
@@ -3958,7 +3958,7 @@ static int opa_local_smp_check(struct hfi1_ibport *ibp,
                               const struct ib_wc *in_wc)
 {
        struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
-       u16 slid = in_wc->slid;
+       u16 slid = ib_slid_cpu16(in_wc->slid);
        u16 pkey;
 
        if (in_wc->pkey_index >= ARRAY_SIZE(ppd->pkeys))

diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index 00f0570..04fb44e 100644 (file)
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -169,7 +169,7 @@ int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int mad_ifc_flags,
 
                op_modifier |= 0x4;
 
-               in_modifier |= in_wc->slid << 16;
+               in_modifier |= ib_slid_cpu16(in_wc->slid) << 16;
        }
 
        err = mlx4_cmd_box(dev->dev, inmailbox->dma, outmailbox->dma, in_modifier,
@@ -625,7 +625,7 @@ int mlx4_ib_send_to_slave(struct mlx4_ib_dev *dev, int slave, u8 port,
                memcpy((char *)&tun_mad->hdr.slid_mac_47_32, &(wc->smac[4]), 2);
        } else {
                tun_mad->hdr.sl_vid = cpu_to_be16(((u16)(wc->sl)) << 12);
-               tun_mad->hdr.slid_mac_47_32 = cpu_to_be16(wc->slid);
+               tun_mad->hdr.slid_mac_47_32 = ib_slid_be16(wc->slid);
        }
 
        ib_dma_sync_single_for_device(&dev->ib_dev,
@@ -826,7 +826,7 @@ static int ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
                }
        }
 
-       slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE);
+       slid = in_wc ? ib_slid_cpu16(in_wc->slid) : be16_to_cpu(IB_LID_PERMISSIVE);
 
        if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0) {
                forward_trap(to_mdev(ibdev), port_num, in_mad);

diff --git a/drivers/infiniband/hw/mlx5/mad.c b/drivers/infiniband/hw/mlx5/mad.c
index 95db929..cd2264a 100644 (file)
--- a/drivers/infiniband/hw/mlx5/mad.c
+++ b/drivers/infiniband/hw/mlx5/mad.c
@@ -78,7 +78,7 @@ static int process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
        u16 slid;
        int err;
 
-       slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE);
+       slid = in_wc ? ib_slid_cpu16(in_wc->slid) : be16_to_cpu(IB_LID_PERMISSIVE);
 
        if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0)
                return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;

diff --git a/drivers/infiniband/hw/mthca/mthca_cmd.c b/drivers/infiniband/hw/mthca/mthca_cmd.c
index 9d83a53..e19ae0b 100644 (file)
--- a/drivers/infiniband/hw/mthca/mthca_cmd.c
+++ b/drivers/infiniband/hw/mthca/mthca_cmd.c
@@ -1921,7 +1921,7 @@ int mthca_MAD_IFC(struct mthca_dev *dev, int ignore_mkey, int ignore_bkey,
                        (in_wc->wc_flags & IB_WC_GRH ? 0x80 : 0);
                MTHCA_PUT(inbox, val,               MAD_IFC_G_PATH_OFFSET);
 
-               MTHCA_PUT(inbox, in_wc->slid,       MAD_IFC_RLID_OFFSET);
+               MTHCA_PUT(inbox, ib_slid_cpu16(in_wc->slid), MAD_IFC_RLID_OFFSET);
                MTHCA_PUT(inbox, in_wc->pkey_index, MAD_IFC_PKEY_OFFSET);
 
                if (in_grh)
@@ -1929,7 +1929,7 @@ int mthca_MAD_IFC(struct mthca_dev *dev, int ignore_mkey, int ignore_bkey,
 
                op_modifier |= 0x4;
 
-               in_modifier |= in_wc->slid << 16;
+               in_modifier |= ib_slid_cpu16(in_wc->slid) << 16;
        }
 
        err = mthca_cmd_box(dev, inmailbox->dma, outmailbox->dma,

diff --git a/drivers/infiniband/hw/mthca/mthca_mad.c b/drivers/infiniband/hw/mthca/mthca_mad.c
index 617531f..a9caada 100644 (file)
--- a/drivers/infiniband/hw/mthca/mthca_mad.c
+++ b/drivers/infiniband/hw/mthca/mthca_mad.c
@@ -205,7 +205,7 @@ int mthca_process_mad(struct ib_device *ibdev,
                      u16 *out_mad_pkey_index)
 {
        int err;
-       u16 slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE);
+       u16 slid = in_wc ? ib_slid_cpu16(in_wc->slid) : be16_to_cpu(IB_LID_PERMISSIVE);
        u16 prev_lid = 0;
        struct ib_port_attr pattr;
        const struct ib_mad *in_mad = (const struct ib_mad *)in;

diff --git a/drivers/infiniband/sw/rdmavt/cq.c b/drivers/infiniband/sw/rdmavt/cq.c
index 0ae2ff8..0335a3d 100644 (file)
--- a/drivers/infiniband/sw/rdmavt/cq.c
+++ b/drivers/infiniband/sw/rdmavt/cq.c
@@ -107,7 +107,7 @@ void rvt_cq_enter(struct rvt_cq *cq, struct ib_wc *entry, bool solicited)
                wc->uqueue[head].src_qp = entry->src_qp;
                wc->uqueue[head].wc_flags = entry->wc_flags;
                wc->uqueue[head].pkey_index = entry->pkey_index;
-               wc->uqueue[head].slid = entry->slid;
+               wc->uqueue[head].slid = ib_slid_cpu16(entry->slid);
                wc->uqueue[head].sl = entry->sl;
                wc->uqueue[head].dlid_path_bits = entry->dlid_path_bits;
                wc->uqueue[head].port_num = entry->port_num;

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 6205359..7eaf7d2 100644 (file)
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -948,7 +948,7 @@ struct ib_wc {
        u32                     src_qp;
        int                     wc_flags;
        u16                     pkey_index;
-       u16                     slid;
+       u32                     slid;
        u8                      sl;
        u8                      dlid_path_bits;
        u8                      port_num;       /* valid only for DR SMPs on switches */
@@ -3706,4 +3706,16 @@ static inline enum rdma_ah_attr_type rdma_ah_find_type(struct ib_device *dev,
        else
                return RDMA_AH_ATTR_TYPE_IB;
 }
+
+/* Return slid in 16bit CPU encoding */
+static inline u16 ib_slid_cpu16(u32 slid)
+{
+       return (u16)slid;
+}
+
+/* Return slid in 16bit BE encoding */
+static inline u16 ib_slid_be16(u32 slid)
+{
+       return cpu_to_be16((u16)slid);
+}
 #endif /* IB_VERBS_H */