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// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 2019-2021, Intel Corporation. */
#include "ice_vsi_vlan_lib.h"
#include "ice_lib.h"
#include "ice_fltr.h"
#include "ice.h"
/**
* ice_vsi_add_vlan - default add VLAN implementation for all VSI types
* @vsi: VSI being configured
* @vid: VLAN ID to be added
* @action: filter action to be performed on match
*/
int
ice_vsi_add_vlan(struct ice_vsi *vsi, u16 vid, enum ice_sw_fwd_act_type action)
{
int err = 0;
if (!ice_fltr_add_vlan(vsi, vid, action)) {
vsi->num_vlan++;
} else {
err = -ENODEV;
dev_err(ice_pf_to_dev(vsi->back), "Failure Adding VLAN %d on VSI %i\n",
vid, vsi->vsi_num);
}
return err;
}
/**
* ice_vsi_del_vlan - default del VLAN implementation for all VSI types
* @vsi: VSI being configured
* @vid: VLAN ID to be removed
*/
int ice_vsi_del_vlan(struct ice_vsi *vsi, u16 vid)
{
struct ice_pf *pf = vsi->back;
struct device *dev;
int err;
dev = ice_pf_to_dev(pf);
err = ice_fltr_remove_vlan(vsi, vid, ICE_FWD_TO_VSI);
if (!err) {
vsi->num_vlan--;
} else if (err == -ENOENT) {
dev_dbg(dev, "Failed to remove VLAN %d on VSI %i, it does not exist\n",
vid, vsi->vsi_num);
err = 0;
} else {
dev_err(dev, "Error removing VLAN %d on VSI %i error: %d\n",
vid, vsi->vsi_num, err);
}
return err;
}
/**
* ice_vsi_manage_vlan_insertion - Manage VLAN insertion for the VSI for Tx
* @vsi: the VSI being changed
*/
static int ice_vsi_manage_vlan_insertion(struct ice_vsi *vsi)
{
struct ice_hw *hw = &vsi->back->hw;
struct ice_vsi_ctx *ctxt;
int err;
ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
if (!ctxt)
return -ENOMEM;
/* Here we are configuring the VSI to let the driver add VLAN tags by
* setting vlan_flags to ICE_AQ_VSI_VLAN_MODE_ALL. The actual VLAN tag
* insertion happens in the Tx hot path, in ice_tx_map.
*/
ctxt->info.vlan_flags = ICE_AQ_VSI_VLAN_MODE_ALL;
/* Preserve existing VLAN strip setting */
ctxt->info.vlan_flags |= (vsi->info.vlan_flags &
ICE_AQ_VSI_VLAN_EMOD_M);
ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID);
err = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
if (err) {
dev_err(ice_pf_to_dev(vsi->back), "update VSI for VLAN insert failed, err %d aq_err %s\n",
err, ice_aq_str(hw->adminq.sq_last_status));
goto out;
}
vsi->info.vlan_flags = ctxt->info.vlan_flags;
out:
kfree(ctxt);
return err;
}
/**
* ice_vsi_manage_vlan_stripping - Manage VLAN stripping for the VSI for Rx
* @vsi: the VSI being changed
* @ena: boolean value indicating if this is a enable or disable request
*/
static int ice_vsi_manage_vlan_stripping(struct ice_vsi *vsi, bool ena)
{
struct ice_hw *hw = &vsi->back->hw;
struct ice_vsi_ctx *ctxt;
int err;
/* do not allow modifying VLAN stripping when a port VLAN is configured
* on this VSI
*/
if (vsi->info.pvid)
return 0;
ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
if (!ctxt)
return -ENOMEM;
/* Here we are configuring what the VSI should do with the VLAN tag in
* the Rx packet. We can either leave the tag in the packet or put it in
* the Rx descriptor.
*/
if (ena)
/* Strip VLAN tag from Rx packet and put it in the desc */
ctxt->info.vlan_flags = ICE_AQ_VSI_VLAN_EMOD_STR_BOTH;
else
/* Disable stripping. Leave tag in packet */
ctxt->info.vlan_flags = ICE_AQ_VSI_VLAN_EMOD_NOTHING;
/* Allow all packets untagged/tagged */
ctxt->info.vlan_flags |= ICE_AQ_VSI_VLAN_MODE_ALL;
ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID);
err = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
if (err) {
dev_err(ice_pf_to_dev(vsi->back), "update VSI for VLAN strip failed, ena = %d err %d aq_err %s\n",
ena, err, ice_aq_str(hw->adminq.sq_last_status));
goto out;
}
vsi->info.vlan_flags = ctxt->info.vlan_flags;
out:
kfree(ctxt);
return err;
}
int ice_vsi_ena_stripping(struct ice_vsi *vsi)
{
return ice_vsi_manage_vlan_stripping(vsi, true);
}
int ice_vsi_dis_stripping(struct ice_vsi *vsi)
{
return ice_vsi_manage_vlan_stripping(vsi, false);
}
int ice_vsi_ena_insertion(struct ice_vsi *vsi)
{
return ice_vsi_manage_vlan_insertion(vsi);
}
int ice_vsi_dis_insertion(struct ice_vsi *vsi)
{
return ice_vsi_manage_vlan_insertion(vsi);
}
/**
* ice_vsi_manage_pvid - Enable or disable port VLAN for VSI
* @vsi: the VSI to update
* @pvid_info: VLAN ID and QoS used to set the PVID VSI context field
* @enable: true for enable PVID false for disable
*/
static int ice_vsi_manage_pvid(struct ice_vsi *vsi, u16 pvid_info, bool enable)
{
struct ice_hw *hw = &vsi->back->hw;
struct ice_aqc_vsi_props *info;
struct ice_vsi_ctx *ctxt;
int ret;
ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
if (!ctxt)
return -ENOMEM;
ctxt->info = vsi->info;
info = &ctxt->info;
if (enable) {
info->vlan_flags = ICE_AQ_VSI_VLAN_MODE_UNTAGGED |
ICE_AQ_VSI_PVLAN_INSERT_PVID |
ICE_AQ_VSI_VLAN_EMOD_STR;
info->sw_flags2 |= ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
} else {
info->vlan_flags = ICE_AQ_VSI_VLAN_EMOD_NOTHING |
ICE_AQ_VSI_VLAN_MODE_ALL;
info->sw_flags2 &= ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
}
info->pvid = cpu_to_le16(pvid_info);
info->valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID |
ICE_AQ_VSI_PROP_SW_VALID);
ret = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
if (ret) {
dev_info(ice_hw_to_dev(hw), "update VSI for port VLAN failed, err %d aq_err %s\n",
ret, ice_aq_str(hw->adminq.sq_last_status));
goto out;
}
vsi->info.vlan_flags = info->vlan_flags;
vsi->info.sw_flags2 = info->sw_flags2;
vsi->info.pvid = info->pvid;
out:
kfree(ctxt);
return ret;
}
int ice_vsi_set_port_vlan(struct ice_vsi *vsi, u16 pvid_info)
{
return ice_vsi_manage_pvid(vsi, pvid_info, true);
}
/**
* ice_cfg_vlan_pruning - enable or disable VLAN pruning on the VSI
* @vsi: VSI to enable or disable VLAN pruning on
* @ena: set to true to enable VLAN pruning and false to disable it
*
* returns 0 if VSI is updated, negative otherwise
*/
static int ice_cfg_vlan_pruning(struct ice_vsi *vsi, bool ena)
{
struct ice_vsi_ctx *ctxt;
struct ice_pf *pf;
int status;
if (!vsi)
return -EINVAL;
/* Don't enable VLAN pruning if the netdev is currently in promiscuous
* mode. VLAN pruning will be enabled when the interface exits
* promiscuous mode if any VLAN filters are active.
*/
if (vsi->netdev && vsi->netdev->flags & IFF_PROMISC && ena)
return 0;
pf = vsi->back;
ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
if (!ctxt)
return -ENOMEM;
ctxt->info = vsi->info;
if (ena)
ctxt->info.sw_flags2 |= ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
else
ctxt->info.sw_flags2 &= ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SW_VALID);
status = ice_update_vsi(&pf->hw, vsi->idx, ctxt, NULL);
if (status) {
netdev_err(vsi->netdev, "%sabling VLAN pruning on VSI handle: %d, VSI HW ID: %d failed, err = %d, aq_err = %s\n",
ena ? "En" : "Dis", vsi->idx, vsi->vsi_num, status,
ice_aq_str(pf->hw.adminq.sq_last_status));
goto err_out;
}
vsi->info.sw_flags2 = ctxt->info.sw_flags2;
kfree(ctxt);
return 0;
err_out:
kfree(ctxt);
return status;
}
int ice_vsi_ena_rx_vlan_filtering(struct ice_vsi *vsi)
{
return ice_cfg_vlan_pruning(vsi, true);
}
int ice_vsi_dis_rx_vlan_filtering(struct ice_vsi *vsi)
{
return ice_cfg_vlan_pruning(vsi, false);
}
static int ice_cfg_vlan_antispoof(struct ice_vsi *vsi, bool enable)
{
struct ice_vsi_ctx *ctx;
int err;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
ctx->info.sec_flags = vsi->info.sec_flags;
ctx->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SECURITY_VALID);
if (enable)
ctx->info.sec_flags |= ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S;
else
ctx->info.sec_flags &= ~(ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S);
err = ice_update_vsi(&vsi->back->hw, vsi->idx, ctx, NULL);
if (err)
dev_err(ice_pf_to_dev(vsi->back), "Failed to configure Tx VLAN anti-spoof %s for VSI %d, error %d\n",
enable ? "ON" : "OFF", vsi->vsi_num, err);
else
vsi->info.sec_flags = ctx->info.sec_flags;
kfree(ctx);
return err;
}
int ice_vsi_ena_tx_vlan_filtering(struct ice_vsi *vsi)
{
return ice_cfg_vlan_antispoof(vsi, true);
}
int ice_vsi_dis_tx_vlan_filtering(struct ice_vsi *vsi)
{
return ice_cfg_vlan_antispoof(vsi, false);
}
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