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DFS offload: Skip user space processing for CAC operations

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If DFS is offloaded to the driver, hostapd should not be performing
these operations. Send the relevant control interface events to provide
information to upper layer software that may use such events to track
DFS/CAC state. This makes the offloaded DFS implementation more
consistent with the DFS-in-hostapd behavior.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Ahmad Kholaif 2015-03-04 16:56:44 -08:00 committed by Jouni Malinen
parent 192ad3d730
commit 5de81d7a7a
1 changed files with 25 additions and 8 deletions
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23
src/ap/dfs.c
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@ -748,12 +748,20 @@ int hostapd_dfs_complete_cac(struct hostapd_iface *iface, int success, int freq,
if (success) {
/* Complete iface/ap configuration */
if (iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) {
/* Complete AP configuration for the first bring up. */
if (iface->state != HAPD_IFACE_ENABLED)
hostapd_setup_interface_complete(iface, 0);
else
iface->cac_started = 0;
} else {
set_dfs_state(iface, freq, ht_enabled, chan_offset,
chan_width, cf1, cf2,
HOSTAPD_CHAN_DFS_AVAILABLE);
iface->cac_started = 0;
hostapd_setup_interface_complete(iface, 0);
}
}
return 0;
}
@ -934,13 +942,17 @@ int hostapd_dfs_radar_detected(struct hostapd_iface *iface, int freq,
{
int res;
if (!iface->conf->ieee80211h)
return 0;
wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, DFS_EVENT_RADAR_DETECTED
"freq=%d ht_enabled=%d chan_offset=%d chan_width=%d cf1=%d cf2=%d",
freq, ht_enabled, chan_offset, chan_width, cf1, cf2);
/* Proceed only if DFS is not offloaded to the driver */
if (iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)
return 0;
if (!iface->conf->ieee80211h)
return 0;
/* mark radar frequency as invalid */
set_dfs_state(iface, freq, ht_enabled, chan_offset, chan_width,
cf1, cf2, HOSTAPD_CHAN_DFS_UNAVAILABLE);
@ -964,6 +976,11 @@ int hostapd_dfs_nop_finished(struct hostapd_iface *iface, int freq,
wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, DFS_EVENT_NOP_FINISHED
"freq=%d ht_enabled=%d chan_offset=%d chan_width=%d cf1=%d cf2=%d",
freq, ht_enabled, chan_offset, chan_width, cf1, cf2);
/* Proceed only if DFS is not offloaded to the driver */
if (iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)
return 0;
/* TODO add correct implementation here */
set_dfs_state(iface, freq, ht_enabled, chan_offset, chan_width,
cf1, cf2, HOSTAPD_CHAN_DFS_USABLE);