root/drivers/net/wireless/quantenna/qtnfmac/qlink_util.c
// SPDX-License-Identifier: GPL-2.0+
/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */

#include <linux/nl80211.h>

#include "qlink_util.h"

u16 qlink_iface_type_to_nl_mask(u16 qlink_type)
{
        u16 result = 0;

        switch (qlink_type) {
        case QLINK_IFTYPE_AP:
                result |= BIT(NL80211_IFTYPE_AP);
                break;
        case QLINK_IFTYPE_STATION:
                result |= BIT(NL80211_IFTYPE_STATION);
                break;
        case QLINK_IFTYPE_ADHOC:
                result |= BIT(NL80211_IFTYPE_ADHOC);
                break;
        case QLINK_IFTYPE_MONITOR:
                result |= BIT(NL80211_IFTYPE_MONITOR);
                break;
        case QLINK_IFTYPE_WDS:
                result |= BIT(NL80211_IFTYPE_WDS);
                break;
        case QLINK_IFTYPE_AP_VLAN:
                result |= BIT(NL80211_IFTYPE_AP_VLAN);
                break;
        }

        return result;
}

u8 qlink_chan_width_mask_to_nl(u16 qlink_mask)
{
        u8 result = 0;

        if (qlink_mask & BIT(QLINK_CHAN_WIDTH_5))
                result |= BIT(NL80211_CHAN_WIDTH_5);

        if (qlink_mask & BIT(QLINK_CHAN_WIDTH_10))
                result |= BIT(NL80211_CHAN_WIDTH_10);

        if (qlink_mask & BIT(QLINK_CHAN_WIDTH_20_NOHT))
                result |= BIT(NL80211_CHAN_WIDTH_20_NOHT);

        if (qlink_mask & BIT(QLINK_CHAN_WIDTH_20))
                result |= BIT(NL80211_CHAN_WIDTH_20);

        if (qlink_mask & BIT(QLINK_CHAN_WIDTH_40))
                result |= BIT(NL80211_CHAN_WIDTH_40);

        if (qlink_mask & BIT(QLINK_CHAN_WIDTH_80))
                result |= BIT(NL80211_CHAN_WIDTH_80);

        if (qlink_mask & BIT(QLINK_CHAN_WIDTH_80P80))
                result |= BIT(NL80211_CHAN_WIDTH_80P80);

        if (qlink_mask & BIT(QLINK_CHAN_WIDTH_160))
                result |= BIT(NL80211_CHAN_WIDTH_160);

        return result;
}

static enum nl80211_chan_width qlink_chanwidth_to_nl(u8 qlw)
{
        switch (qlw) {
        case QLINK_CHAN_WIDTH_20_NOHT:
                return NL80211_CHAN_WIDTH_20_NOHT;
        case QLINK_CHAN_WIDTH_20:
                return NL80211_CHAN_WIDTH_20;
        case QLINK_CHAN_WIDTH_40:
                return NL80211_CHAN_WIDTH_40;
        case QLINK_CHAN_WIDTH_80:
                return NL80211_CHAN_WIDTH_80;
        case QLINK_CHAN_WIDTH_80P80:
                return NL80211_CHAN_WIDTH_80P80;
        case QLINK_CHAN_WIDTH_160:
                return NL80211_CHAN_WIDTH_160;
        case QLINK_CHAN_WIDTH_5:
                return NL80211_CHAN_WIDTH_5;
        case QLINK_CHAN_WIDTH_10:
                return NL80211_CHAN_WIDTH_10;
        default:
                return -1;
        }
}

static u8 qlink_chanwidth_nl_to_qlink(enum nl80211_chan_width nlwidth)
{
        switch (nlwidth) {
        case NL80211_CHAN_WIDTH_20_NOHT:
                return QLINK_CHAN_WIDTH_20_NOHT;
        case NL80211_CHAN_WIDTH_20:
                return QLINK_CHAN_WIDTH_20;
        case NL80211_CHAN_WIDTH_40:
                return QLINK_CHAN_WIDTH_40;
        case NL80211_CHAN_WIDTH_80:
                return QLINK_CHAN_WIDTH_80;
        case NL80211_CHAN_WIDTH_80P80:
                return QLINK_CHAN_WIDTH_80P80;
        case NL80211_CHAN_WIDTH_160:
                return QLINK_CHAN_WIDTH_160;
        case NL80211_CHAN_WIDTH_5:
                return QLINK_CHAN_WIDTH_5;
        case NL80211_CHAN_WIDTH_10:
                return QLINK_CHAN_WIDTH_10;
        default:
                return -1;
        }
}

void qlink_chandef_q2cfg(struct wiphy *wiphy,
                         const struct qlink_chandef *qch,
                         struct cfg80211_chan_def *chdef)
{
        struct ieee80211_channel *chan;

        chan = ieee80211_get_channel(wiphy, le16_to_cpu(qch->chan.center_freq));

        chdef->chan = chan;
        chdef->center_freq1 = le16_to_cpu(qch->center_freq1);
        chdef->center_freq2 = le16_to_cpu(qch->center_freq2);
        chdef->width = qlink_chanwidth_to_nl(qch->width);
        chdef->edmg.bw_config = 0;
        chdef->edmg.channels = 0;
}

void qlink_chandef_cfg2q(const struct cfg80211_chan_def *chdef,
                         struct qlink_chandef *qch)
{
        struct ieee80211_channel *chan = chdef->chan;

        qch->chan.hw_value = cpu_to_le16(chan->hw_value);
        qch->chan.center_freq = cpu_to_le16(chan->center_freq);
        qch->chan.flags = cpu_to_le32(chan->flags);

        qch->center_freq1 = cpu_to_le16(chdef->center_freq1);
        qch->center_freq2 = cpu_to_le16(chdef->center_freq2);
        qch->width = qlink_chanwidth_nl_to_qlink(chdef->width);
}

enum qlink_hidden_ssid qlink_hidden_ssid_nl2q(enum nl80211_hidden_ssid nl_val)
{
        switch (nl_val) {
        case NL80211_HIDDEN_SSID_ZERO_LEN:
                return QLINK_HIDDEN_SSID_ZERO_LEN;
        case NL80211_HIDDEN_SSID_ZERO_CONTENTS:
                return QLINK_HIDDEN_SSID_ZERO_CONTENTS;
        case NL80211_HIDDEN_SSID_NOT_IN_USE:
        default:
                return QLINK_HIDDEN_SSID_NOT_IN_USE;
        }
}

bool qtnf_utils_is_bit_set(const u8 *arr, unsigned int bit,
                           unsigned int arr_max_len)
{
        unsigned int idx = bit / BITS_PER_BYTE;
        u8 mask = 1 << (bit - (idx * BITS_PER_BYTE));

        if (idx >= arr_max_len)
                return false;

        return arr[idx] & mask;
}

void qlink_acl_data_cfg2q(const struct cfg80211_acl_data *acl,
                          struct qlink_acl_data *qacl)
{
        switch (acl->acl_policy) {
        case NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED:
                qacl->policy =
                        cpu_to_le32(QLINK_ACL_POLICY_ACCEPT_UNLESS_LISTED);
                break;
        case NL80211_ACL_POLICY_DENY_UNLESS_LISTED:
                qacl->policy = cpu_to_le32(QLINK_ACL_POLICY_DENY_UNLESS_LISTED);
                break;
        }

        qacl->num_entries = cpu_to_le32(acl->n_acl_entries);
        memcpy(qacl->mac_addrs, acl->mac_addrs,
               acl->n_acl_entries * sizeof(*qacl->mac_addrs));
}

enum qlink_band qlink_utils_band_cfg2q(enum nl80211_band band)
{
        switch (band) {
        case NL80211_BAND_2GHZ:
                return QLINK_BAND_2GHZ;
        case NL80211_BAND_5GHZ:
                return QLINK_BAND_5GHZ;
        case NL80211_BAND_60GHZ:
                return QLINK_BAND_60GHZ;
        default:
                return -EINVAL;
        }
}

enum qlink_dfs_state qlink_utils_dfs_state_cfg2q(enum nl80211_dfs_state state)
{
        switch (state) {
        case NL80211_DFS_USABLE:
                return QLINK_DFS_USABLE;
        case NL80211_DFS_AVAILABLE:
                return QLINK_DFS_AVAILABLE;
        case NL80211_DFS_UNAVAILABLE:
        default:
                return QLINK_DFS_UNAVAILABLE;
        }
}

u32 qlink_utils_chflags_cfg2q(u32 cfgflags)
{
        u32 flags = 0;

        if (cfgflags & IEEE80211_CHAN_DISABLED)
                flags |= QLINK_CHAN_DISABLED;

        if (cfgflags & IEEE80211_CHAN_NO_IR)
                flags |= QLINK_CHAN_NO_IR;

        if (cfgflags & IEEE80211_CHAN_RADAR)
                flags |= QLINK_CHAN_RADAR;

        if (cfgflags & IEEE80211_CHAN_NO_HT40PLUS)
                flags |= QLINK_CHAN_NO_HT40PLUS;

        if (cfgflags & IEEE80211_CHAN_NO_HT40MINUS)
                flags |= QLINK_CHAN_NO_HT40MINUS;

        if (cfgflags & IEEE80211_CHAN_NO_80MHZ)
                flags |= QLINK_CHAN_NO_80MHZ;

        if (cfgflags & IEEE80211_CHAN_NO_160MHZ)
                flags |= QLINK_CHAN_NO_160MHZ;

        return flags;
}

static u32 qtnf_reg_rule_flags_parse(u32 qflags)
{
        u32 flags = 0;

        if (qflags & QLINK_RRF_NO_OFDM)
                flags |= NL80211_RRF_NO_OFDM;

        if (qflags & QLINK_RRF_NO_CCK)
                flags |= NL80211_RRF_NO_CCK;

        if (qflags & QLINK_RRF_NO_INDOOR)
                flags |= NL80211_RRF_NO_INDOOR;

        if (qflags & QLINK_RRF_NO_OUTDOOR)
                flags |= NL80211_RRF_NO_OUTDOOR;

        if (qflags & QLINK_RRF_DFS)
                flags |= NL80211_RRF_DFS;

        if (qflags & QLINK_RRF_PTP_ONLY)
                flags |= NL80211_RRF_PTP_ONLY;

        if (qflags & QLINK_RRF_PTMP_ONLY)
                flags |= NL80211_RRF_PTMP_ONLY;

        if (qflags & QLINK_RRF_NO_IR)
                flags |= NL80211_RRF_NO_IR;

        if (qflags & QLINK_RRF_AUTO_BW)
                flags |= NL80211_RRF_AUTO_BW;

        if (qflags & QLINK_RRF_IR_CONCURRENT)
                flags |= NL80211_RRF_IR_CONCURRENT;

        if (qflags & QLINK_RRF_NO_HT40MINUS)
                flags |= NL80211_RRF_NO_HT40MINUS;

        if (qflags & QLINK_RRF_NO_HT40PLUS)
                flags |= NL80211_RRF_NO_HT40PLUS;

        if (qflags & QLINK_RRF_NO_80MHZ)
                flags |= NL80211_RRF_NO_80MHZ;

        if (qflags & QLINK_RRF_NO_160MHZ)
                flags |= NL80211_RRF_NO_160MHZ;

        return flags;
}

void qlink_utils_regrule_q2nl(struct ieee80211_reg_rule *rule,
                              const struct qlink_tlv_reg_rule *tlv)
{
        rule->freq_range.start_freq_khz = le32_to_cpu(tlv->start_freq_khz);
        rule->freq_range.end_freq_khz = le32_to_cpu(tlv->end_freq_khz);
        rule->freq_range.max_bandwidth_khz =
                le32_to_cpu(tlv->max_bandwidth_khz);
        rule->power_rule.max_antenna_gain = le32_to_cpu(tlv->max_antenna_gain);
        rule->power_rule.max_eirp = le32_to_cpu(tlv->max_eirp);
        rule->dfs_cac_ms = le32_to_cpu(tlv->dfs_cac_ms);
        rule->flags = qtnf_reg_rule_flags_parse(le32_to_cpu(tlv->flags));
}