ixgbe: Populate the prio_tc_map in ixgbe_setup_tc

There were cases where the prio_tc_map was not populated when we were
calling open.  This will result in us incorrectly configuring the traffic
classes when DCB is enabled.  In order to correct this I have updated the
code so that we now populate the values prior to allocating the q_vectors
and calling ixgbe_open.

Cc: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c
index 39ac2fe..5442b35 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c
@@ -228,8 +228,7 @@ void ixgbe_dcb_unpack_prio(struct ixgbe_dcb_config *cfg, int direction,
                ptype[tc] = tc_config[tc].path[direction].prio_type;
 }
 
-static u8 ixgbe_dcb_get_tc_from_up(struct ixgbe_dcb_config *cfg,
-                                  int direction, u8 up)
+u8 ixgbe_dcb_get_tc_from_up(struct ixgbe_dcb_config *cfg, int direction, u8 up)
 {
        struct tc_configuration *tc_config = &cfg->tc_config[0];
        u8 prio_mask = 1 << up;

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.h
index 24333b7..1f4108e 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.h
@@ -146,6 +146,7 @@ void ixgbe_dcb_unpack_max(struct ixgbe_dcb_config *, u16 *);
 void ixgbe_dcb_unpack_bwgid(struct ixgbe_dcb_config *, int, u8 *);
 void ixgbe_dcb_unpack_prio(struct ixgbe_dcb_config *, int, u8 *);
 void ixgbe_dcb_unpack_map(struct ixgbe_dcb_config *, int, u8 *);
+u8 ixgbe_dcb_get_tc_from_up(struct ixgbe_dcb_config *, int, u8);
 
 /* DCB credits calculation */
 s32 ixgbe_dcb_calculate_tc_credits(struct ixgbe_hw *,

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c
index 5164a21..f1e002d 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c
@@ -151,34 +151,21 @@ static u8 ixgbe_dcbnl_get_state(struct net_device *netdev)
 
 static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
 {
-       int err = 0;
-       u8 prio_tc[MAX_USER_PRIORITY] = {0};
-       int i;
        struct ixgbe_adapter *adapter = netdev_priv(netdev);
+       int err = 0;
 
        /* Fail command if not in CEE mode */
        if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
                return 1;
 
        /* verify there is something to do, if not then exit */
-       if (!!state != !(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
-               goto out;
-
-       if (state > 0) {
-               err = ixgbe_setup_tc(netdev, adapter->dcb_cfg.num_tcs.pg_tcs);
-               ixgbe_dcb_unpack_map(&adapter->dcb_cfg, DCB_TX_CONFIG, prio_tc);
-       } else {
-               err = ixgbe_setup_tc(netdev, 0);
-       }
-
-       if (err)
+       if (!state == !(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
                goto out;
 
-       for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
-               netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
-
+       err = ixgbe_setup_tc(netdev,
+                            state ? adapter->dcb_cfg.num_tcs.pg_tcs : 0);
 out:
-       return err ? 1 : 0;
+       return !!err;
 }
 
 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
@@ -584,9 +571,6 @@ static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
        if (err)
                goto err_out;
 
-       for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
-               netdev_set_prio_tc_map(dev, i, ets->prio_tc[i]);
-
        err = ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
 err_out:
        return err;

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index d3cf887..91bc60f 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -6596,6 +6596,31 @@ static void ixgbe_validate_rtr(struct ixgbe_adapter *adapter, u8 tc)
 }
 
 /**
+ * ixgbe_set_prio_tc_map - Configure netdev prio tc map
+ * @adapter: Pointer to adapter struct
+ *
+ * Populate the netdev user priority to tc map
+ */
+static void ixgbe_set_prio_tc_map(struct ixgbe_adapter *adapter)
+{
+       struct net_device *dev = adapter->netdev;
+       struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg;
+       struct ieee_ets *ets = adapter->ixgbe_ieee_ets;
+       u8 prio;
+
+       for (prio = 0; prio < MAX_USER_PRIORITY; prio++) {
+               u8 tc = 0;
+
+               if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE)
+                       tc = ixgbe_dcb_get_tc_from_up(dcb_cfg, 0, prio);
+               else if (ets)
+                       tc = ets->prio_tc[prio];
+
+               netdev_set_prio_tc_map(dev, prio, tc);
+       }
+}
+
+/**
  * ixgbe_setup_tc - configure net_device for multiple traffic classes
  *
  * @netdev: net device to configure
@@ -6633,6 +6658,8 @@ int ixgbe_setup_tc(struct net_device *dev, u8 tc)
 
        if (tc) {
                netdev_set_num_tc(dev, tc);
+               ixgbe_set_prio_tc_map(adapter);
+
                adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
                adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
 
@@ -6642,6 +6669,7 @@ int ixgbe_setup_tc(struct net_device *dev, u8 tc)
                }
        } else {
                netdev_reset_tc(dev);
+
                if (adapter->hw.mac.type == ixgbe_mac_82598EB)
                        adapter->hw.fc.requested_mode = adapter->last_lfc_mode;