ice: Update rings based on TC information

This patch adds a new function ice_vsi_cfg_dcb_rings which updates a
VSI's rings based on DCB traffic class information.

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 6bbca2c99dbd..aabba91189bd 100644
--- a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
@@ -58,6 +58,44 @@ u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg *dcbcfg)
 }
 
 /**
+ * ice_vsi_cfg_dcb_rings - Update rings to reflect DCB TC
+ * @vsi: VSI owner of rings being updated
+ */
+void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi)
+{
+        struct ice_ring *tx_ring, *rx_ring;
+        u16 qoffset, qcount;
+        int i, n;
+
+        if (!test_bit(ICE_FLAG_DCB_ENA, vsi->back->flags)) {
+                /* Reset the TC information */
+                for (i = 0; i < vsi->num_txq; i++) {
+                        tx_ring = vsi->tx_rings[i];
+                        tx_ring->dcb_tc = 0;
+                }
+                for (i = 0; i < vsi->num_rxq; i++) {
+                        rx_ring = vsi->rx_rings[i];
+                        rx_ring->dcb_tc = 0;
+                }
+                return;
+        }
+
+        ice_for_each_traffic_class(n) {
+                if (!(vsi->tc_cfg.ena_tc & BIT(n)))
+                        break;
+
+                qoffset = vsi->tc_cfg.tc_info[n].qoffset;
+                qcount = vsi->tc_cfg.tc_info[n].qcount_tx;
+                for (i = qoffset; i < (qoffset + qcount); i++) {
+                        tx_ring = vsi->tx_rings[i];
+                        rx_ring = vsi->rx_rings[i];
+                        tx_ring->dcb_tc = n;
+                        rx_ring->dcb_tc = n;
+                }
+        }
+}
+
+/**
  * ice_pf_dcb_recfg - Reconfigure all VEBs and VSIs
  * @pf: pointer to the PF struct
  *