IB/rdmavt: Add support for query_port, modify_port and get_port_immutable

rvt_query_port calls into the driver through a call back function
query_port_state to populate the rest of ib_port_attr elements.
rvt_modify_port calls into the driver if needed through a call back
function shut_down_port()

Signed-off-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/sw/rdmavt/vt.c b/drivers/infiniband/sw/rdmavt/vt.c
index e017117..2ccf610 100644 (file)
--- a/drivers/infiniband/sw/rdmavt/vt.c
+++ b/drivers/infiniband/sw/rdmavt/vt.c
@@ -128,14 +128,27 @@ static int rvt_modify_device(struct ib_device *device,
 static int rvt_query_port(struct ib_device *ibdev, u8 port_num,
                          struct ib_port_attr *props)
 {
-       if (ibport_num_to_idx(ibdev, port_num) < 0)
+       struct rvt_dev_info *rdi = ib_to_rvt(ibdev);
+       struct rvt_ibport *rvp;
+       int port_index = ibport_num_to_idx(ibdev, port_num);
+
+       if (port_index < 0)
                return -EINVAL;
 
-       /*
-        * VT-DRIVER-API: query_port_state()
-        * driver returns pretty much everything in ib_port_attr
-        */
-       return -EOPNOTSUPP;
+       rvp = rdi->ports[port_index];
+       memset(props, 0, sizeof(*props));
+       props->sm_lid = rvp->sm_lid;
+       props->sm_sl = rvp->sm_sl;
+       props->port_cap_flags = rvp->port_cap_flags;
+       props->max_msg_sz = 0x80000000;
+       props->pkey_tbl_len = rvt_get_npkeys(rdi);
+       props->bad_pkey_cntr = rvp->pkey_violations;
+       props->qkey_viol_cntr = rvp->qkey_violations;
+       props->subnet_timeout = rvp->subnet_timeout;
+       props->init_type_reply = 0;
+
+       /* Populate the remaining ib_port_attr elements */
+       return rdi->driver_f.query_port_state(rdi, port_num, props);
 }
 
 /**
@@ -150,23 +163,26 @@ static int rvt_query_port(struct ib_device *ibdev, u8 port_num,
 static int rvt_modify_port(struct ib_device *ibdev, u8 port_num,
                           int port_modify_mask, struct ib_port_modify *props)
 {
-       /*
-        * VT-DRIVER-API: set_link_state()
-        * driver will set the link state using the IB enumeration
-        *
-        * VT-DRIVER-API: clear_qkey_violations()
-        * clears driver private qkey counter
-        *
-        * VT-DRIVER-API: get_lid()
-        * driver needs to return the LID
-        *
-        * TBD: send_trap() and post_mad_send() need examined to see where they
-        * fit in.
-        */
-       if (ibport_num_to_idx(ibdev, port_num) < 0)
+       struct rvt_dev_info *rdi = ib_to_rvt(ibdev);
+       struct rvt_ibport *rvp;
+       int ret = 0;
+       int port_index = ibport_num_to_idx(ibdev, port_num);
+
+       if (port_index < 0)
                return -EINVAL;
 
-       return -EOPNOTSUPP;
+       rvp = rdi->ports[port_index];
+       rvp->port_cap_flags |= props->set_port_cap_mask;
+       rvp->port_cap_flags &= ~props->clr_port_cap_mask;
+
+       if (props->set_port_cap_mask || props->clr_port_cap_mask)
+               rdi->driver_f.cap_mask_chg(rdi, port_num);
+       if (port_modify_mask & IB_PORT_SHUTDOWN)
+               ret = rdi->driver_f.shut_down_port(rdi, port_num);
+       if (port_modify_mask & IB_PORT_RESET_QKEY_CNTR)
+               rvp->qkey_violations = 0;
+
+       return ret;
 }
 
 /**
@@ -273,7 +289,24 @@ static int rvt_dealloc_ucontext(struct ib_ucontext *context)
 static int rvt_get_port_immutable(struct ib_device *ibdev, u8 port_num,
                                  struct ib_port_immutable *immutable)
 {
-       return -EOPNOTSUPP;
+       struct rvt_dev_info *rdi = ib_to_rvt(ibdev);
+       struct ib_port_attr attr;
+       int err, port_index;
+
+       port_index = ibport_num_to_idx(ibdev, port_num);
+       if (port_index < 0)
+               return -EINVAL;
+
+       err = rvt_query_port(ibdev, port_num, &attr);
+       if (err)
+               return err;
+
+       immutable->pkey_tbl_len = attr.pkey_tbl_len;
+       immutable->gid_tbl_len = attr.gid_tbl_len;
+       immutable->core_cap_flags = rdi->dparms.core_cap_flags;
+       immutable->max_mad_size = rdi->dparms.max_mad_size;
+
+       return 0;
 }
 
 /*

diff --git a/include/rdma/rdma_vt.h b/include/rdma/rdma_vt.h
index dabf4d5..4242fea 100644 (file)
--- a/include/rdma/rdma_vt.h
+++ b/include/rdma/rdma_vt.h
@@ -200,6 +200,8 @@ struct rvt_driver_params {
        int psn_mask;
        int psn_shift;
        int psn_modify_mask;
+       u32 core_cap_flags;
+       u32 max_mad_size;
 };
 
 /* Protection domain */
@@ -250,6 +252,10 @@ struct rvt_driver_provided {
        int (*mtu_to_path_mtu)(u32 mtu);
        int (*get_guid_be)(struct rvt_dev_info *rdi, struct rvt_ibport *rvp,
                           int guid_index, __be64 *guid);
+       int (*query_port_state)(struct rvt_dev_info *rdi, u8 port_num,
+                               struct ib_port_attr *props);
+       int (*shut_down_port)(struct rvt_dev_info *rdi, u8 port_num);
+       void (*cap_mask_chg)(struct rvt_dev_info *rdi, u8 port_num);
 
        /*--------------------*/
        /* Optional functions */