ice: Add code to get DCB related statistics

This patch adds a new function ice_update_dcb_stats to get DCB stats
from the hardware and ethtool support for displaying these stats.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
index de1e33db761a..51f90696de56 100644
--- a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
@@ -360,6 +360,44 @@ dcb_init_err:
 }
 
 /**
+ * ice_update_dcb_stats - Update DCB stats counters
+ * @pf: PF whose stats needs to be updated
+ */
+void ice_update_dcb_stats(struct ice_pf *pf)
+{
+        struct ice_hw_port_stats *prev_ps, *cur_ps;
+        struct ice_hw *hw = &pf->hw;
+        u8 pf_id = hw->pf_id;
+        int i;
+
+        prev_ps = &pf->stats_prev;
+        cur_ps = &pf->stats;
+
+        for (i = 0; i < 8; i++) {
+                ice_stat_update32(hw, GLPRT_PXOFFRXC(pf_id, i),
+                                  pf->stat_prev_loaded,
+                                  &prev_ps->priority_xoff_rx[i],
+                                  &cur_ps->priority_xoff_rx[i]);
+                ice_stat_update32(hw, GLPRT_PXONRXC(pf_id, i),
+                                  pf->stat_prev_loaded,
+                                  &prev_ps->priority_xon_rx[i],
+                                  &cur_ps->priority_xon_rx[i]);
+                ice_stat_update32(hw, GLPRT_PXONTXC(pf_id, i),
+                                  pf->stat_prev_loaded,
+                                  &prev_ps->priority_xon_tx[i],
+                                  &cur_ps->priority_xon_tx[i]);
+                ice_stat_update32(hw, GLPRT_PXOFFTXC(pf_id, i),
+                                  pf->stat_prev_loaded,
+                                  &prev_ps->priority_xoff_tx[i],
+                                  &cur_ps->priority_xoff_tx[i]);
+                ice_stat_update32(hw, GLPRT_RXON2OFFCNT(pf_id, i),
+                                  pf->stat_prev_loaded,
+                                  &prev_ps->priority_xon_2_xoff[i],
+                                  &cur_ps->priority_xon_2_xoff[i]);
+        }
+}
+
+/**
  * ice_tx_prepare_vlan_flags_dcb - prepare VLAN tagging for DCB
  * @tx_ring: ring to send buffer on
  * @first: pointer to struct ice_tx_buf