On 2012-01-26 1:41 PM, Victor Goldenshtein wrote:
> Implement Channel Availability Check (CAC) during initialization
> phase. According to DFS requirements the AP should monitor 'radar
> channels' for potential radar interference for a minimum CAC time
> prior enabling the transmissions.
>
> Add dfs support into hw features, allow the usage of the radar
> channels if ieee80211h is enabled in the hostapd.conf and the
> driver supports radar detection.
>
> Parse and handle driver's DFS capabilities, userspace applications
> must be fully synchronized with device capabilities to detect radar
> patterns in the air which may influence userspace behavior.
>
> Signed-off-by: Boris Presman <boris.presman@xxxxxx>
> Signed-off-by: Victor Goldenshtein <victorg@xxxxxx>
> ---
> src/ap/hostapd.c | 17 +++++++++++------
> src/ap/hw_features.c | 30 ++++++++++++++++++++----------
> src/ap/hw_features.h | 9 +++++++++
> src/drivers/driver.h | 5 +++++
> src/drivers/driver_nl80211.c | 7 +++++++
> src/utils/eloop.c | 4 ++++
> src/utils/eloop.h | 7 +++++++
> 7 files changed, 63 insertions(+), 16 deletions(-)
>
> diff --git a/src/ap/hostapd.c b/src/ap/hostapd.c
> index ce37922..411b681 100644
> --- a/src/ap/hostapd.c
> +++ b/src/ap/hostapd.c
> @@ -733,14 +739,13 @@ int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
> hostapd_hw_mode_txt(hapd->iconf->hw_mode),
> hapd->iconf->channel, iface->freq);
>
> - if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
> - hapd->iconf->channel,
> - hapd->iconf->ieee80211n,
> - hapd->iconf->secondary_channel)) {
> - wpa_printf(MSG_ERROR, "Could not set channel for "
> - "kernel driver");
> + if (hostapd_check_set_freq(hapd)) {
> + wpa_printf(MSG_ERROR, "Couldn't check/set freq");
> return -1;
> }
> +
> + eloop_enable();
> + wpa_printf(MSG_DEBUG, "Continuing with init flow");
> }
>
> if (iface->current_mode) {
This seems like a bit of a hack to me. Wouldn't it be better to prevent
eloop_terminate() from being called instead of adding another function
to override the eloop termination?
- Felix
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