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nl80211: Use helper function for phy_info_handler()

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This allows one level of indentation to be removed by using a helper
function to process each wiphy band.

Signed-hostap: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2013-03-10 16:17:18 +02:00
parent 5f43910727
commit 3cfcad1bb1
1 changed files with 205 additions and 190 deletions
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93
src/drivers/driver_nl80211.c
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@ -5003,14 +5003,9 @@ struct phy_info_arg {
int last_mode, last_chan_idx;
};
static int phy_info_handler(struct nl_msg *msg, void *arg)
static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band)
{
struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct phy_info_arg *phy_info = arg;
struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
[NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
@ -5020,27 +5015,18 @@ static int phy_info_handler(struct nl_msg *msg, void *arg)
[NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
};
struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
[NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] =
{ .type = NLA_FLAG },
};
struct nlattr *nl_band;
struct nlattr *nl_freq;
struct nlattr *nl_rate;
int rem_band, rem_freq, rem_rate;
int rem_freq, rem_rate;
struct hostapd_hw_modes *mode;
int idx;
nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
return NL_SKIP;
nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
if (phy_info->last_mode != nl_band->nla_type) {
mode = os_realloc_array(phy_info->modes,
*phy_info->num_modes + 1,
@ -5069,14 +5055,12 @@ static int phy_info_handler(struct nl_msg *msg, void *arg)
if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
mode->a_mpdu_params |= nla_get_u8(
tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
0x03;
tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) & 0x03;
}
if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
mode->a_mpdu_params |= nla_get_u8(
tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2;
tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) << 2;
}
if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
@ -5101,10 +5085,11 @@ static int phy_info_handler(struct nl_msg *msg, void *arg)
if (tb_band[NL80211_BAND_ATTR_FREQS]) {
int new_channels = 0;
struct hostapd_channel_data *channel;
nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS],
rem_freq) {
nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
nla_data(nl_freq),
nla_len(nl_freq), freq_policy);
nla_data(nl_freq), nla_len(nl_freq),
freq_policy);
if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
continue;
new_channels++;
@ -5113,7 +5098,6 @@ static int phy_info_handler(struct nl_msg *msg, void *arg)
channel = os_realloc_array(mode->channels,
mode->num_channels + new_channels,
sizeof(struct hostapd_channel_data));
if (!channel)
return NL_SKIP;
@ -5122,14 +5106,16 @@ static int phy_info_handler(struct nl_msg *msg, void *arg)
idx = phy_info->last_chan_idx;
nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS],
rem_freq) {
nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
nla_data(nl_freq),
nla_len(nl_freq), freq_policy);
nla_data(nl_freq), nla_len(nl_freq),
freq_policy);
if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
continue;
mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
mode->channels[idx].freq = nla_get_u32(
tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
mode->channels[idx].flag = 0;
/* mode is not set */
@ -5176,8 +5162,7 @@ static int phy_info_handler(struct nl_msg *msg, void *arg)
mode->channels[idx].flag |=
HOSTAPD_CHAN_NO_IBSS;
if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
mode->channels[idx].flag |=
HOSTAPD_CHAN_RADAR;
mode->channels[idx].flag |= HOSTAPD_CHAN_RADAR;
if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
!tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
@ -5190,9 +5175,11 @@ static int phy_info_handler(struct nl_msg *msg, void *arg)
}
if (tb_band[NL80211_BAND_ATTR_RATES]) {
nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
nla_len(nl_rate), rate_policy);
nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES],
rem_rate) {
nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
nla_data(nl_rate), nla_len(nl_rate),
rate_policy);
if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
continue;
mode->num_rates++;
@ -5204,12 +5191,15 @@ static int phy_info_handler(struct nl_msg *msg, void *arg)
idx = 0;
nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
nla_len(nl_rate), rate_policy);
nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES],
rem_rate) {
nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
nla_data(nl_rate), nla_len(nl_rate),
rate_policy);
if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
continue;
mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
mode->rates[idx] = nla_get_u32(
tb_rate[NL80211_BITRATE_ATTR_RATE]);
/* crude heuristic */
if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
@ -5219,11 +5209,36 @@ static int phy_info_handler(struct nl_msg *msg, void *arg)
idx++;
}
}
return NL_OK;
}
static int phy_info_handler(struct nl_msg *msg, void *arg)
{
struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct phy_info_arg *phy_info = arg;
struct nlattr *nl_band;
int rem_band;
nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
return NL_SKIP;
nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band)
{
int res = phy_info_band(phy_info, nl_band);
if (res != NL_OK)
return res;
}
return NL_SKIP;
}
static struct hostapd_hw_modes *
wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
{