nl80211: Split phy_info_band() into smaller helper functions
Signed-hostap: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen
parent
3cfcad1bb1
commit
e62a1d43f9
1 changed files with 191 additions and 168 deletions
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@ -5003,10 +5003,46 @@ struct phy_info_arg {
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int last_mode, last_chan_idx;
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};
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static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band)
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static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa,
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struct nlattr *ampdu_factor,
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struct nlattr *ampdu_density,
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struct nlattr *mcs_set)
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{
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if (capa)
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mode->ht_capab = nla_get_u16(capa);
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if (ampdu_factor)
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mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03;
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if (ampdu_density)
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mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2;
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if (mcs_set && nla_len(mcs_set) >= 16) {
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u8 *mcs;
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mcs = nla_data(mcs_set);
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os_memcpy(mode->mcs_set, mcs, 16);
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}
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}
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static void phy_info_vht_capa(struct hostapd_hw_modes *mode,
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struct nlattr *capa,
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struct nlattr *mcs_set)
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{
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if (capa)
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mode->vht_capab = nla_get_u32(capa);
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if (mcs_set && nla_len(mcs_set) >= 8) {
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u8 *mcs;
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mcs = nla_data(mcs_set);
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os_memcpy(mode->vht_mcs_set, mcs, 8);
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}
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}
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static int phy_info_freqs(struct phy_info_arg *phy_info,
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struct hostapd_hw_modes *mode, struct nlattr *tb)
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{
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struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
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struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
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static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
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[NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
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[NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
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@ -5015,17 +5051,153 @@ static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band)
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[NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
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[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
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};
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struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
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int new_channels = 0;
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struct hostapd_channel_data *channel;
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struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
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struct nlattr *nl_freq;
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int rem_freq, idx;
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if (tb == NULL)
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return NL_OK;
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nla_for_each_nested(nl_freq, tb, rem_freq) {
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nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
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nla_data(nl_freq), nla_len(nl_freq), freq_policy);
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if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
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continue;
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new_channels++;
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}
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channel = os_realloc_array(mode->channels,
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mode->num_channels + new_channels,
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sizeof(struct hostapd_channel_data));
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if (!channel)
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return NL_SKIP;
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mode->channels = channel;
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mode->num_channels += new_channels;
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idx = phy_info->last_chan_idx;
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nla_for_each_nested(nl_freq, tb, rem_freq) {
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nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
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nla_data(nl_freq), nla_len(nl_freq), freq_policy);
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if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
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continue;
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mode->channels[idx].freq = nla_get_u32(
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tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
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mode->channels[idx].flag = 0;
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/* mode is not set */
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if (mode->mode >= NUM_HOSTAPD_MODES) {
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/* crude heuristic */
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if (mode->channels[idx].freq < 4000)
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mode->mode = HOSTAPD_MODE_IEEE80211B;
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else if (mode->channels[idx].freq > 50000)
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mode->mode = HOSTAPD_MODE_IEEE80211AD;
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else
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mode->mode = HOSTAPD_MODE_IEEE80211A;
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}
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switch (mode->mode) {
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case HOSTAPD_MODE_IEEE80211AD:
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mode->channels[idx].chan =
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(mode->channels[idx].freq - 56160) / 2160;
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break;
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case HOSTAPD_MODE_IEEE80211A:
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mode->channels[idx].chan =
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mode->channels[idx].freq / 5 - 1000;
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break;
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case HOSTAPD_MODE_IEEE80211B:
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case HOSTAPD_MODE_IEEE80211G:
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if (mode->channels[idx].freq == 2484)
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mode->channels[idx].chan = 14;
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else
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mode->channels[idx].chan =
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(mode->channels[idx].freq - 2407) / 5;
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break;
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default:
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break;
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}
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if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
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mode->channels[idx].flag |= HOSTAPD_CHAN_DISABLED;
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if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
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mode->channels[idx].flag |= HOSTAPD_CHAN_PASSIVE_SCAN;
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if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
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mode->channels[idx].flag |= HOSTAPD_CHAN_NO_IBSS;
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if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
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mode->channels[idx].flag |= HOSTAPD_CHAN_RADAR;
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if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
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!tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
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mode->channels[idx].max_tx_power =
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nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
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idx++;
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}
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phy_info->last_chan_idx = idx;
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return NL_OK;
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}
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static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb)
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{
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static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
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[NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
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[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] =
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{ .type = NLA_FLAG },
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};
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struct nlattr *nl_freq;
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struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
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struct nlattr *nl_rate;
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int rem_freq, rem_rate;
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int rem_rate, idx;
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if (tb == NULL)
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return NL_OK;
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nla_for_each_nested(nl_rate, tb, rem_rate) {
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nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
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nla_data(nl_rate), nla_len(nl_rate),
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rate_policy);
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if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
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continue;
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mode->num_rates++;
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}
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mode->rates = os_calloc(mode->num_rates, sizeof(int));
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if (!mode->rates)
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return NL_SKIP;
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idx = 0;
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nla_for_each_nested(nl_rate, tb, rem_rate) {
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nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
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nla_data(nl_rate), nla_len(nl_rate),
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rate_policy);
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if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
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continue;
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mode->rates[idx] = nla_get_u32(
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tb_rate[NL80211_BITRATE_ATTR_RATE]);
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/* crude heuristic */
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if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
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mode->rates[idx] > 200)
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mode->mode = HOSTAPD_MODE_IEEE80211G;
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idx++;
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}
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return NL_OK;
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}
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static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band)
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{
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struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
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struct hostapd_hw_modes *mode;
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int idx;
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int ret;
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if (phy_info->last_mode != nl_band->nla_type) {
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mode = os_realloc_array(phy_info->modes,
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@ -5048,167 +5220,18 @@ static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band)
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nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
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nla_len(nl_band), NULL);
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if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
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mode->ht_capab = nla_get_u16(
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tb_band[NL80211_BAND_ATTR_HT_CAPA]);
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}
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if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
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mode->a_mpdu_params |= nla_get_u8(
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tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) & 0x03;
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}
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if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
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mode->a_mpdu_params |= nla_get_u8(
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tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) << 2;
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}
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if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
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nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
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u8 *mcs;
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mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
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os_memcpy(mode->mcs_set, mcs, 16);
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}
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if (tb_band[NL80211_BAND_ATTR_VHT_CAPA]) {
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mode->vht_capab = nla_get_u32(
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tb_band[NL80211_BAND_ATTR_VHT_CAPA]);
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}
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if (tb_band[NL80211_BAND_ATTR_VHT_MCS_SET] &&
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nla_len(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET])) {
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u8 *mcs;
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mcs = nla_data(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]);
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os_memcpy(mode->vht_mcs_set, mcs, 8);
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}
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if (tb_band[NL80211_BAND_ATTR_FREQS]) {
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int new_channels = 0;
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struct hostapd_channel_data *channel;
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nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS],
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rem_freq) {
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nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
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nla_data(nl_freq), nla_len(nl_freq),
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freq_policy);
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if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
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continue;
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new_channels++;
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}
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channel = os_realloc_array(mode->channels,
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mode->num_channels + new_channels,
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sizeof(struct hostapd_channel_data));
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if (!channel)
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return NL_SKIP;
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mode->channels = channel;
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mode->num_channels += new_channels;
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idx = phy_info->last_chan_idx;
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nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS],
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rem_freq) {
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nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
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nla_data(nl_freq), nla_len(nl_freq),
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freq_policy);
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if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
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continue;
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mode->channels[idx].freq = nla_get_u32(
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tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
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mode->channels[idx].flag = 0;
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/* mode is not set */
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if (mode->mode >= NUM_HOSTAPD_MODES) {
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/* crude heuristic */
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if (mode->channels[idx].freq < 4000)
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mode->mode = HOSTAPD_MODE_IEEE80211B;
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else if (mode->channels[idx].freq > 50000)
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mode->mode = HOSTAPD_MODE_IEEE80211AD;
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else
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mode->mode = HOSTAPD_MODE_IEEE80211A;
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}
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switch (mode->mode) {
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case HOSTAPD_MODE_IEEE80211AD:
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mode->channels[idx].chan =
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(mode->channels[idx].freq - 56160) /
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2160;
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break;
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case HOSTAPD_MODE_IEEE80211A:
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mode->channels[idx].chan =
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mode->channels[idx].freq / 5 - 1000;
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break;
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case HOSTAPD_MODE_IEEE80211B:
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case HOSTAPD_MODE_IEEE80211G:
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if (mode->channels[idx].freq == 2484)
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mode->channels[idx].chan = 14;
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else
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mode->channels[idx].chan =
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(mode->channels[idx].freq -
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2407) / 5;
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break;
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default:
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break;
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}
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if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
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mode->channels[idx].flag |=
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HOSTAPD_CHAN_DISABLED;
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if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
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mode->channels[idx].flag |=
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HOSTAPD_CHAN_PASSIVE_SCAN;
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if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
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mode->channels[idx].flag |=
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HOSTAPD_CHAN_NO_IBSS;
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if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
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mode->channels[idx].flag |= HOSTAPD_CHAN_RADAR;
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if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
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!tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
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mode->channels[idx].max_tx_power =
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nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
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idx++;
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}
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phy_info->last_chan_idx = idx;
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}
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if (tb_band[NL80211_BAND_ATTR_RATES]) {
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nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES],
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rem_rate) {
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nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
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nla_data(nl_rate), nla_len(nl_rate),
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rate_policy);
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if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
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continue;
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mode->num_rates++;
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}
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mode->rates = os_calloc(mode->num_rates, sizeof(int));
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if (!mode->rates)
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return NL_SKIP;
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idx = 0;
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nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES],
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rem_rate) {
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nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
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nla_data(nl_rate), nla_len(nl_rate),
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rate_policy);
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if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
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continue;
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mode->rates[idx] = nla_get_u32(
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tb_rate[NL80211_BITRATE_ATTR_RATE]);
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/* crude heuristic */
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if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
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mode->rates[idx] > 200)
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mode->mode = HOSTAPD_MODE_IEEE80211G;
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idx++;
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}
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}
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phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA],
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tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR],
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tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY],
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tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
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phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA],
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tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]);
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ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]);
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if (ret != NL_OK)
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return ret;
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ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]);
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if (ret != NL_OK)
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return ret;
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return NL_OK;
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}
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