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// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (C) 2012-2014, 2020 Intel Corporation
* Copyright (C) 2016 Intel Deutschland GmbH
*/
#include <net/mac80211.h>
#include "fw-api.h"
#include "mvm.h"
struct iwl_mvm_iface_iterator_data {
struct ieee80211_vif *ignore_vif;
int idx;
struct iwl_mvm_phy_ctxt *phyctxt;
u16 ids[MAX_MACS_IN_BINDING];
u16 colors[MAX_MACS_IN_BINDING];
};
static int iwl_mvm_binding_cmd(struct iwl_mvm *mvm, u32 action,
struct iwl_mvm_iface_iterator_data *data)
{
struct iwl_binding_cmd cmd;
struct iwl_mvm_phy_ctxt *phyctxt = data->phyctxt;
int i, ret;
u32 status;
int size;
memset(&cmd, 0, sizeof(cmd));
if (fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT)) {
size = sizeof(cmd);
cmd.lmac_id = cpu_to_le32(iwl_mvm_get_lmac_id(mvm->fw,
phyctxt->channel->band));
} else {
size = IWL_BINDING_CMD_SIZE_V1;
}
cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(phyctxt->id,
phyctxt->color));
cmd.action = cpu_to_le32(action);
cmd.phy = cpu_to_le32(FW_CMD_ID_AND_COLOR(phyctxt->id,
phyctxt->color));
for (i = 0; i < MAX_MACS_IN_BINDING; i++)
cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
for (i = 0; i < data->idx; i++)
cmd.macs[i] = cpu_to_le32(FW_CMD_ID_AND_COLOR(data->ids[i],
data->colors[i]));
status = 0;
ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
size, &cmd, &status);
if (ret) {
IWL_ERR(mvm, "Failed to send binding (action:%d): %d\n",
action, ret);
return ret;
}
if (status) {
IWL_ERR(mvm, "Binding command failed: %u\n", status);
ret = -EIO;
}
return ret;
}
static void iwl_mvm_iface_iterator(void *_data, u8 *mac,
struct ieee80211_vif *vif)
{
struct iwl_mvm_iface_iterator_data *data = _data;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (vif == data->ignore_vif)
return;
if (mvmvif->phy_ctxt != data->phyctxt)
return;
if (WARN_ON_ONCE(data->idx >= MAX_MACS_IN_BINDING))
return;
data->ids[data->idx] = mvmvif->id;
data->colors[data->idx] = mvmvif->color;
data->idx++;
}
static int iwl_mvm_binding_update(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct iwl_mvm_phy_ctxt *phyctxt,
bool add)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm_iface_iterator_data data = {
.ignore_vif = vif,
.phyctxt = phyctxt,
};
u32 action = FW_CTXT_ACTION_MODIFY;
lockdep_assert_held(&mvm->mutex);
ieee80211_iterate_active_interfaces_atomic(mvm->hw,
IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_iface_iterator,
&data);
/*
* If there are no other interfaces yet we
* need to create a new binding.
*/
if (data.idx == 0) {
if (add)
action = FW_CTXT_ACTION_ADD;
else
action = FW_CTXT_ACTION_REMOVE;
}
if (add) {
if (WARN_ON_ONCE(data.idx >= MAX_MACS_IN_BINDING))
return -EINVAL;
data.ids[data.idx] = mvmvif->id;
data.colors[data.idx] = mvmvif->color;
data.idx++;
}
return iwl_mvm_binding_cmd(mvm, action, &data);
}
int iwl_mvm_binding_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
return -EINVAL;
/*
* Update SF - Disable if needed. if this fails, SF might still be on
* while many macs are bound, which is forbidden - so fail the binding.
*/
if (iwl_mvm_sf_update(mvm, vif, false))
return -EINVAL;
return iwl_mvm_binding_update(mvm, vif, mvmvif->phy_ctxt, true);
}
int iwl_mvm_binding_remove_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
return -EINVAL;
ret = iwl_mvm_binding_update(mvm, vif, mvmvif->phy_ctxt, false);
if (!ret)
if (iwl_mvm_sf_update(mvm, vif, true))
IWL_ERR(mvm, "Failed to update SF state\n");
return ret;
}
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