staging/rdma/hfi1: Remove rcv bubbles code

Rcv bubbles were improperly calculated for HFIs, fix that here.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Arthur Kepner <arthur.kepner@intel.com>
Signed-off-by: Ira Weiny <iweiny@gmail.com>
Signed-off-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/rdma/hfi1/mad.c b/drivers/staging/rdma/hfi1/mad.c
index a122565..4bc003f 100644 (file)
--- a/drivers/staging/rdma/hfi1/mad.c
+++ b/drivers/staging/rdma/hfi1/mad.c
@@ -2271,34 +2271,8 @@ static void a0_portstatus(struct hfi1_pportdata *ppd,
 {
        if (!is_bx(ppd->dd)) {
                unsigned long vl;
-               int vfi = 0;
                u64 max_vl_xmit_wait = 0, tmp;
                u32 vl_all_mask = VL_MASK_ALL;
-               u64 rcv_data, rcv_bubble;
-
-               rcv_data = be64_to_cpu(rsp->port_rcv_data);
-               rcv_bubble = be64_to_cpu(rsp->port_rcv_bubble);
-               /* In the measured time period, calculate the total number
-                * of flits that were received. Subtract out one false
-                * rcv_bubble increment for every 32 received flits but
-                * don't let the number go negative.
-                */
-               if (rcv_bubble >= (rcv_data>>5)) {
-                       rcv_bubble -= (rcv_data>>5);
-                       rsp->port_rcv_bubble = cpu_to_be64(rcv_bubble);
-               }
-               for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
-                                8 * sizeof(vl_select_mask)) {
-                       rcv_data = be64_to_cpu(rsp->vls[vfi].port_vl_rcv_data);
-                       rcv_bubble =
-                               be64_to_cpu(rsp->vls[vfi].port_vl_rcv_bubble);
-                       if (rcv_bubble >= (rcv_data>>5)) {
-                               rcv_bubble -= (rcv_data>>5);
-                               rsp->vls[vfi].port_vl_rcv_bubble =
-                                                       cpu_to_be64(rcv_bubble);
-                       }
-                       vfi++;
-               }
 
                for_each_set_bit(vl, (unsigned long *)&(vl_all_mask),
                                 8 * sizeof(vl_all_mask)) {
@@ -2363,8 +2337,6 @@ static int pma_get_opa_portstatus(struct opa_pma_mad *pmp,
                                          CNTR_INVALID_VL));
        rsp->port_rcv_data = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FLITS,
                                         CNTR_INVALID_VL));
-       rsp->port_rcv_bubble =
-               cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BBL, CNTR_INVALID_VL));
        rsp->port_xmit_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_PKTS,
                                          CNTR_INVALID_VL));
        rsp->port_rcv_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_PKTS,
@@ -2434,9 +2406,6 @@ static int pma_get_opa_portstatus(struct opa_pma_mad *pmp,
 
                tmp = read_dev_cntr(dd, C_DC_RX_FLIT_VL, idx_from_vl(vl));
                rsp->vls[vfi].port_vl_rcv_data = cpu_to_be64(tmp);
-               rsp->vls[vfi].port_vl_rcv_bubble =
-                       cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BBL_VL,
-                                       idx_from_vl(vl)));
 
                rsp->vls[vfi].port_vl_rcv_pkts =
                        cpu_to_be64(read_dev_cntr(dd, C_DC_RX_PKT_VL,
@@ -2519,32 +2488,8 @@ static void a0_datacounters(struct hfi1_devdata *dd, struct _port_dctrs *rsp,
        if (!is_bx(dd)) {
                unsigned long vl;
                int vfi = 0;
-               u64 rcv_data, rcv_bubble, sum_vl_xmit_wait = 0;
-
-               rcv_data = be64_to_cpu(rsp->port_rcv_data);
-               rcv_bubble = be64_to_cpu(rsp->port_rcv_bubble);
-               /* In the measured time period, calculate the total number
-                * of flits that were received. Subtract out one false
-                * rcv_bubble increment for every 32 received flits but
-                * don't let the number go negative.
-                */
-               if (rcv_bubble >= (rcv_data>>5)) {
-                       rcv_bubble -= (rcv_data>>5);
-                       rsp->port_rcv_bubble = cpu_to_be64(rcv_bubble);
-               }
-               for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
-                               8 * sizeof(vl_select_mask)) {
-                       rcv_data = be64_to_cpu(rsp->vls[vfi].port_vl_rcv_data);
-                       rcv_bubble =
-                               be64_to_cpu(rsp->vls[vfi].port_vl_rcv_bubble);
-                       if (rcv_bubble >= (rcv_data>>5)) {
-                               rcv_bubble -= (rcv_data>>5);
-                               rsp->vls[vfi].port_vl_rcv_bubble =
-                                                       cpu_to_be64(rcv_bubble);
-                       }
-                       vfi++;
-               }
-               vfi = 0;
+               u64 sum_vl_xmit_wait = 0;
+
                for_each_set_bit(vl, (unsigned long *)&(vl_select_mask),
                                8 * sizeof(vl_select_mask)) {
                        u64 tmp = sum_vl_xmit_wait +
@@ -2635,8 +2580,6 @@ static int pma_get_opa_datacounters(struct opa_pma_mad *pmp,
                                                CNTR_INVALID_VL));
        rsp->port_rcv_data = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FLITS,
                                                CNTR_INVALID_VL));
-       rsp->port_rcv_bubble =
-               cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BBL, CNTR_INVALID_VL));
        rsp->port_xmit_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_PKTS,
                                                CNTR_INVALID_VL));
        rsp->port_rcv_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_PKTS,
@@ -2675,9 +2618,6 @@ static int pma_get_opa_datacounters(struct opa_pma_mad *pmp,
                rsp->vls[vfi].port_vl_rcv_data =
                        cpu_to_be64(read_dev_cntr(dd, C_DC_RX_FLIT_VL,
                                                        idx_from_vl(vl)));
-               rsp->vls[vfi].port_vl_rcv_bubble =
-                       cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BBL_VL,
-                                       idx_from_vl(vl)));
 
                rsp->vls[vfi].port_vl_xmit_pkts =
                        cpu_to_be64(read_port_cntr(ppd, C_TX_PKT_VL,