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WNM: Allow specifying dialog token for BSS transition request

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Adds the ability to specify the dialog token of a WNM BSS Transition
Management Request frame via the hostapd control interface.

For this, the new 'dialog_token' option can be used with the BSS_TM_REQ
command. It accepts values as an 8 bit unsigned integer. If not
specified, the dialog token is set to 1 like before.

Signed-off-by: David Bauer <mail@david-bauer.net>
This commit is contained in:
David Bauer 2021-10-06 02:21:46 +02:00 • committed by Jouni Malinen
parent 3f6c02f29a
commit 979f197165
3 changed files with 17 additions and 9 deletions
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10
hostapd/ctrl_iface.c
View file

@ -840,7 +840,7 @@ static int hostapd_ctrl_iface_bss_tm_req(struct hostapd_data *hapd,
const char *pos, *end;
int disassoc_timer = 0;
struct sta_info *sta;
u8 req_mode = 0, valid_int = 0x01;
u8 req_mode = 0, valid_int = 0x01, dialog_token = 0x01;
u8 bss_term_dur[12];
char *url = NULL;
int ret;
@ -878,6 +878,12 @@ static int hostapd_ctrl_iface_bss_tm_req(struct hostapd_data *hapd,
valid_int = atoi(pos);
}
pos = os_strstr(cmd, " dialog_token=");
if (pos) {
pos += 14;
dialog_token = atoi(pos);
}
pos = os_strstr(cmd, " bss_term=");
if (pos) {
pos += 10;
@ -984,7 +990,7 @@ static int hostapd_ctrl_iface_bss_tm_req(struct hostapd_data *hapd,
#endif /* CONFIG_MBO */
ret = wnm_send_bss_tm_req(hapd, sta, req_mode, disassoc_timer,
valid_int, bss_term_dur, url,
valid_int, bss_term_dur, dialog_token, url,
nei_len ? nei_rep : NULL, nei_len,
mbo_len ? mbo : NULL, mbo_len);
#ifdef CONFIG_MBO

12
src/ap/wnm_ap.c
View file

@ -788,8 +788,8 @@ int wnm_send_ess_disassoc_imminent(struct hostapd_data *hapd,
int wnm_send_bss_tm_req(struct hostapd_data *hapd, struct sta_info *sta,
u8 req_mode, int disassoc_timer, u8 valid_int,
const u8 *bss_term_dur, const char *url,
const u8 *nei_rep, size_t nei_rep_len,
const u8 *bss_term_dur, u8 dialog_token,
const char *url, const u8 *nei_rep, size_t nei_rep_len,
const u8 *mbo_attrs, size_t mbo_len)
{
u8 *buf, *pos;
@ -797,8 +797,10 @@ int wnm_send_bss_tm_req(struct hostapd_data *hapd, struct sta_info *sta,
size_t url_len;
wpa_printf(MSG_DEBUG, "WNM: Send BSS Transition Management Request to "
MACSTR " req_mode=0x%x disassoc_timer=%d valid_int=0x%x",
MAC2STR(sta->addr), req_mode, disassoc_timer, valid_int);
MACSTR
" req_mode=0x%x disassoc_timer=%d valid_int=0x%x dialog_token=%u",
MAC2STR(sta->addr), req_mode, disassoc_timer, valid_int,
dialog_token);
buf = os_zalloc(1000 + nei_rep_len + mbo_len);
if (buf == NULL)
return -1;
@ -810,7 +812,7 @@ int wnm_send_bss_tm_req(struct hostapd_data *hapd, struct sta_info *sta,
os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
mgmt->u.action.category = WLAN_ACTION_WNM;
mgmt->u.action.u.bss_tm_req.action = WNM_BSS_TRANS_MGMT_REQ;
mgmt->u.action.u.bss_tm_req.dialog_token = 1;
mgmt->u.action.u.bss_tm_req.dialog_token = dialog_token;
mgmt->u.action.u.bss_tm_req.req_mode = req_mode;
mgmt->u.action.u.bss_tm_req.disassoc_timer =
host_to_le16(disassoc_timer);

4
src/ap/wnm_ap.h
View file

@ -20,8 +20,8 @@ int wnm_send_ess_disassoc_imminent(struct hostapd_data *hapd,
int disassoc_timer);
int wnm_send_bss_tm_req(struct hostapd_data *hapd, struct sta_info *sta,
u8 req_mode, int disassoc_timer, u8 valid_int,
const u8 *bss_term_dur, const char *url,
const u8 *nei_rep, size_t nei_rep_len,
const u8 *bss_term_dur, u8 dialog_token,
const char *url, const u8 *nei_rep, size_t nei_rep_len,
const u8 *mbo_attrs, size_t mbo_len);
void ap_sta_reset_steer_flag_timer(void *eloop_ctx, void *timeout_ctx);
int wnm_send_coloc_intf_req(struct hostapd_data *hapd, struct sta_info *sta,