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DFS: Introduce dfs_set_valid_channel() utility routine

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This is a preliminary change to introduce radar/CAC background detection
support.

Tested-by: Owen Peng <owen.peng@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
This commit is contained in:
Lorenzo Bianconi 2021-12-20 16:48:17 +01:00 committed by Jouni Malinen
parent d001b301ba
commit f39765369a
1 changed files with 24 additions and 14 deletions
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38
src/ap/dfs.c
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@ -568,6 +568,29 @@ dfs_get_valid_channel(struct hostapd_iface *iface,
}
static int dfs_set_valid_channel(struct hostapd_iface *iface, int skip_radar)
{
struct hostapd_channel_data *channel;
u8 cf1 = 0, cf2 = 0;
int sec = 0;
channel = dfs_get_valid_channel(iface, &sec, &cf1, &cf2,
skip_radar);
if (!channel) {
wpa_printf(MSG_ERROR, "could not get valid channel");
return -1;
}
iface->freq = channel->freq;
iface->conf->channel = channel->chan;
iface->conf->secondary_channel = sec;
hostapd_set_oper_centr_freq_seg0_idx(iface->conf, cf1);
hostapd_set_oper_centr_freq_seg1_idx(iface->conf, cf2);
return 0;
}
static int set_dfs_state_freq(struct hostapd_iface *iface, int freq, u32 state)
{
struct hostapd_hw_modes *mode;
@ -755,7 +778,6 @@ static unsigned int dfs_get_cac_time(struct hostapd_iface *iface,
*/
int hostapd_handle_dfs(struct hostapd_iface *iface)
{
struct hostapd_channel_data *channel;
int res, n_chans, n_chans1, start_chan_idx, start_chan_idx1;
int skip_radar = 0;
@ -810,22 +832,10 @@ int hostapd_handle_dfs(struct hostapd_iface *iface)
wpa_printf(MSG_DEBUG, "DFS %d chans unavailable - choose other channel: %s",
res, res ? "yes": "no");
if (res) {
int sec = 0;
u8 cf1 = 0, cf2 = 0;
channel = dfs_get_valid_channel(iface, &sec, &cf1, &cf2,
skip_radar);
if (!channel) {
wpa_printf(MSG_ERROR, "could not get valid channel");
if (dfs_set_valid_channel(iface, skip_radar) < 0) {
hostapd_set_state(iface, HAPD_IFACE_DFS);
return 0;
}
iface->freq = channel->freq;
iface->conf->channel = channel->chan;
iface->conf->secondary_channel = sec;
hostapd_set_oper_centr_freq_seg0_idx(iface->conf, cf1);
hostapd_set_oper_centr_freq_seg1_idx(iface->conf, cf2);
}
} while (res);