ice: let core reject the unsupported coalescing parameters

Set ethtool_ops->supported_coalesce_params to let
the core reject unsupported coalescing parameters.

This driver correctly rejects all unsupported parameters.
As a side effect of these changes the info message about
the bad parameter will no longer be printed. We also
always reject the tx_coalesce_usecs_high param, even
if the target queue pair does not have a TX queue.
Error code changes from EINVAL to EOPNOTSUPP.

v2: allow adaptive TX
v3: adjust commit message for new error code and member name

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c
index ab37ddd..a016ab1 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice_ethtool.c
+++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c
@@ -3452,12 +3452,6 @@ ice_set_rc_coalesce(enum ice_container_type c_type, struct ethtool_coalesce *ec,
 
                break;
        case ICE_TX_CONTAINER:
-               if (ec->tx_coalesce_usecs_high) {
-                       netdev_info(vsi->netdev, "setting %s-usecs-high is not supported\n",
-                                   c_type_str);
-                       return -EINVAL;
-               }
-
                use_adaptive_coalesce = ec->use_adaptive_tx_coalesce;
                coalesce_usecs = ec->tx_coalesce_usecs;
 
@@ -3534,53 +3528,6 @@ ice_set_q_coalesce(struct ice_vsi *vsi, struct ethtool_coalesce *ec, int q_num)
 }
 
 /**
- * ice_is_coalesce_param_invalid - check for unsupported coalesce parameters
- * @netdev: pointer to the netdev associated with this query
- * @ec: ethtool structure to fill with driver's coalesce settings
- *
- * Print netdev info if driver doesn't support one of the parameters
- * and return error. When any parameters will be implemented, remove only
- * this parameter from param array.
- */
-static int
-ice_is_coalesce_param_invalid(struct net_device *netdev,
-                             struct ethtool_coalesce *ec)
-{
-       struct ice_ethtool_not_used {
-               u32 value;
-               const char *name;
-       } param[] = {
-               {ec->stats_block_coalesce_usecs, "stats-block-usecs"},
-               {ec->rate_sample_interval, "sample-interval"},
-               {ec->pkt_rate_low, "pkt-rate-low"},
-               {ec->pkt_rate_high, "pkt-rate-high"},
-               {ec->rx_max_coalesced_frames, "rx-frames"},
-               {ec->rx_coalesce_usecs_irq, "rx-usecs-irq"},
-               {ec->rx_max_coalesced_frames_irq, "rx-frames-irq"},
-               {ec->tx_max_coalesced_frames, "tx-frames"},
-               {ec->tx_coalesce_usecs_irq, "tx-usecs-irq"},
-               {ec->tx_max_coalesced_frames_irq, "tx-frames-irq"},
-               {ec->rx_coalesce_usecs_low, "rx-usecs-low"},
-               {ec->rx_max_coalesced_frames_low, "rx-frames-low"},
-               {ec->tx_coalesce_usecs_low, "tx-usecs-low"},
-               {ec->tx_max_coalesced_frames_low, "tx-frames-low"},
-               {ec->rx_max_coalesced_frames_high, "rx-frames-high"},
-               {ec->tx_max_coalesced_frames_high, "tx-frames-high"}
-       };
-       int i;
-
-       for (i = 0; i < ARRAY_SIZE(param); i++) {
-               if (param[i].value) {
-                       netdev_info(netdev, "Setting %s not supported\n",
-                                   param[i].name);
-                       return -EINVAL;
-               }
-       }
-
-       return 0;
-}
-
-/**
  * ice_print_if_odd_usecs - print message if user tries to set odd [tx|rx]-usecs
  * @netdev: netdev used for print
  * @itr_setting: previous user setting
@@ -3620,9 +3567,6 @@ __ice_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec,
        struct ice_netdev_priv *np = netdev_priv(netdev);
        struct ice_vsi *vsi = np->vsi;
 
-       if (ice_is_coalesce_param_invalid(netdev, ec))
-               return -EINVAL;
-
        if (q_num < 0) {
                struct ice_q_vector *q_vector = vsi->q_vectors[0];
                int v_idx;
@@ -3817,6 +3761,9 @@ ice_get_module_eeprom(struct net_device *netdev,
 }
 
 static const struct ethtool_ops ice_ethtool_ops = {
+       .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
+                                    ETHTOOL_COALESCE_USE_ADAPTIVE |
+                                    ETHTOOL_COALESCE_RX_USECS_HIGH,
        .get_link_ksettings     = ice_get_link_ksettings,
        .set_link_ksettings     = ice_set_link_ksettings,
        .get_drvinfo            = ice_get_drvinfo,