i40e: Enable VF Tx bandwidth setting
Implement the net device op for Tx bandwidth setting. Setting the Tx bandwidth is done by 'ip link set <PF device> vf <VF num> rate <Tx rate>', with the rate specified in Mbit/sec. The rate setting is displayed with 'ip link show'. Change-ID: I4d45dda8320632fdb6ec92c87d083e51070b46ab Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Acked-by: Shannon Nelson <shannon.nelson@intel.com> Acked-by: Greg Rose <gregory.v.rose@intel.com> Tested-by: Sibai Li <sibai.li@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>hifive-unleashed-5.1
Mitch Williams
Jeff Kirsher
parent
f9b4b6278d
commit
6b192891b8
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@ -2252,6 +2252,35 @@ static i40e_status i40e_aq_tx_sched_cmd(struct i40e_hw *hw, u16 seid,
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return status;
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}
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/**
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* i40e_aq_config_vsi_bw_limit - Configure VSI BW Limit
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* @hw: pointer to the hw struct
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* @seid: VSI seid
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* @credit: BW limit credits (0 = disabled)
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* @max_credit: Max BW limit credits
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* @cmd_details: pointer to command details structure or NULL
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**/
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i40e_status i40e_aq_config_vsi_bw_limit(struct i40e_hw *hw,
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u16 seid, u16 credit, u8 max_credit,
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struct i40e_asq_cmd_details *cmd_details)
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{
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struct i40e_aq_desc desc;
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struct i40e_aqc_configure_vsi_bw_limit *cmd =
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(struct i40e_aqc_configure_vsi_bw_limit *)&desc.params.raw;
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i40e_status status;
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i40e_fill_default_direct_cmd_desc(&desc,
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i40e_aqc_opc_configure_vsi_bw_limit);
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cmd->vsi_seid = cpu_to_le16(seid);
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cmd->credit = cpu_to_le16(credit);
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cmd->max_credit = max_credit;
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status = i40e_asq_send_command(hw, &desc, NULL, 0, cmd_details);
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return status;
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}
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/**
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* i40e_aq_config_vsi_tc_bw - Config VSI BW Allocation per TC
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* @hw: pointer to the hw struct
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@ -167,6 +167,9 @@ i40e_status i40e_aq_delete_element(struct i40e_hw *hw, u16 seid,
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i40e_status i40e_aq_mac_address_write(struct i40e_hw *hw,
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u16 flags, u8 *mac_addr,
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struct i40e_asq_cmd_details *cmd_details);
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i40e_status i40e_aq_config_vsi_bw_limit(struct i40e_hw *hw,
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u16 seid, u16 credit, u8 max_credit,
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struct i40e_asq_cmd_details *cmd_details);
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i40e_status i40e_aq_dcb_updated(struct i40e_hw *hw,
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struct i40e_asq_cmd_details *cmd_details);
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i40e_status i40e_aq_set_hmc_resource_profile(struct i40e_hw *hw,
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@ -434,6 +434,15 @@ static int i40e_alloc_vsi_res(struct i40e_vf *vf, enum i40e_vsi_type type)
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if (ret)
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dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
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/* Set VF bandwidth if specified */
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if (vf->tx_rate) {
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ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
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vf->tx_rate / 50, 0, NULL);
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if (ret)
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dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
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vf->vf_id, ret);
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}
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error_alloc_vsi_res:
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return ret;
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}
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@ -2184,7 +2193,61 @@ error_pvid:
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**/
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int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int tx_rate)
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{
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return -EOPNOTSUPP;
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struct i40e_netdev_priv *np = netdev_priv(netdev);
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struct i40e_pf *pf = np->vsi->back;
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struct i40e_vsi *vsi;
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struct i40e_vf *vf;
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int speed = 0;
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int ret = 0;
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/* validate the request */
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if (vf_id >= pf->num_alloc_vfs) {
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dev_err(&pf->pdev->dev, "Invalid VF Identifier %d.\n", vf_id);
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ret = -EINVAL;
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goto error;
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}
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vf = &(pf->vf[vf_id]);
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vsi = pf->vsi[vf->lan_vsi_index];
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if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
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dev_err(&pf->pdev->dev, "Uninitialized VF %d.\n", vf_id);
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ret = -EINVAL;
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goto error;
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}
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switch (pf->hw.phy.link_info.link_speed) {
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case I40E_LINK_SPEED_40GB:
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speed = 40000;
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break;
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case I40E_LINK_SPEED_10GB:
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speed = 10000;
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break;
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case I40E_LINK_SPEED_1GB:
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speed = 1000;
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break;
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default:
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break;
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}
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if (tx_rate > speed) {
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dev_err(&pf->pdev->dev, "Invalid tx rate %d specified for vf %d.",
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tx_rate, vf->vf_id);
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ret = -EINVAL;
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goto error;
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}
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/* Tx rate credits are in values of 50Mbps, 0 is disabled*/
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ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid, tx_rate / 50, 0,
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NULL);
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if (ret) {
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dev_err(&pf->pdev->dev, "Unable to set tx rate, error code %d.\n",
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ret);
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ret = -EIO;
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goto error;
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}
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vf->tx_rate = tx_rate;
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error:
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return ret;
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}
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/**
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@ -2224,7 +2287,7 @@ int i40e_ndo_get_vf_config(struct net_device *netdev,
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memcpy(&ivi->mac, vf->default_lan_addr.addr, ETH_ALEN);
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ivi->tx_rate = 0;
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ivi->tx_rate = vf->tx_rate;
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ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
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ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
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I40E_VLAN_PRIORITY_SHIFT;
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@ -98,6 +98,7 @@ struct i40e_vf {
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unsigned long vf_caps; /* vf's adv. capabilities */
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unsigned long vf_states; /* vf's runtime states */
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unsigned int tx_rate; /* Tx bandwidth limit in Mbps */
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bool link_forced;
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bool link_up; /* only valid if vf link is forced */
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};
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