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Update Probe Response template on channel switch

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When AP is beaconing only on the 6 GHz band and unsol_bcast_presp
interval is set, AP sends unsolicited broadcast Probe Response frames
for in-band discovery. hostapd sent the Probe Response template for this
frame only when setting a new Beacon frame template.

Extend this to update the Probe Response template during channel switch.

Signed-off-by: Rathees Kumar R Chinannan <quic_rrchinan@quicinc.com>
This commit is contained in:
Rathees Kumar R Chinannan 2024-04-08 12:05:16 +05:30 committed by Jouni Malinen
parent 7d0c08910b
commit 6f1fbebeb6
3 changed files with 18 additions and 0 deletions
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8
src/ap/hostapd.c
View file

@ -4387,6 +4387,11 @@ static int hostapd_fill_csa_settings(struct hostapd_data *hapd,
settings->link_id = hapd->mld_link_id;
#endif /* CONFIG_IEEE80211BE */
#ifdef CONFIG_IEEE80211AX
settings->ubpr.unsol_bcast_probe_resp_tmpl =
hostapd_unsol_bcast_probe_resp(hapd, &settings->ubpr);
#endif /* CONFIG_IEEE80211AX */
return 0;
}
@ -4448,6 +4453,9 @@ int hostapd_switch_channel(struct hostapd_data *hapd,
ret = hostapd_drv_switch_channel(hapd, settings);
free_beacon_data(&settings->beacon_csa);
free_beacon_data(&settings->beacon_after);
#ifdef CONFIG_IEEE80211AX
os_free(settings->ubpr.unsol_bcast_probe_resp_tmpl);
#endif /* CONFIG_IEEE80211AX */
if (ret) {
/* if we failed, clean cs parameters */

3
src/drivers/driver.h
View file

@ -2732,6 +2732,7 @@ struct beacon_data {
* @counter_offset_presp: Offset to the count field in probe resp.
* @punct_bitmap - Preamble puncturing bitmap
* @link_id: Link ID to determine the link for MLD; -1 for non-MLD
* @ubpr: Unsolicited broadcast Probe Response frame data
*/
struct csa_settings {
u8 cs_count;
@ -2746,6 +2747,8 @@ struct csa_settings {
u16 punct_bitmap;
int link_id;
struct unsol_bcast_probe_resp ubpr;
};
/**

7
src/drivers/driver_nl80211.c
View file

@ -11308,6 +11308,13 @@ static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
goto fail;
nla_nest_end(msg, beacon_csa);
#ifdef CONFIG_IEEE80211AX
if (settings->ubpr.unsol_bcast_probe_resp_interval &&
nl80211_unsol_bcast_probe_resp(bss, msg, &settings->ubpr) < 0)
goto fail;
#endif /* CONFIG_IEEE80211AX */
ret = send_and_recv_cmd(drv, msg);
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",