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ANQP: Add support to specify frequency in ANQP_GET command

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Previously, wpa_supplicant fetched BSS channel info from scan results to
send ANQP Query frames. If the scan results for the specified BSS are
not available, the ANQP_GET command request was getting rejected.

Add support to send ANQP Query frame on the specified frequency without
requiring the scan results to be available.

The control interface command format:
- ANQP_GET <dst_addr> [freq=<freq in MHz>] <Query ID1>[,<Query ID2>,..]

Signed-off-by: Veerendranath Jakkam <vjakkam@codeaurora.org>
This commit is contained in:
Veerendranath Jakkam 2020-08-11 17:53:17 +05:30 committed by Jouni Malinen
parent 43106e122b
commit 170775232d
3 changed files with 26 additions and 10 deletions
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13
wpa_supplicant/ctrl_iface.c
View file

@ -7466,7 +7466,7 @@ static int ctrl_interworking_connect(struct wpa_supplicant *wpa_s, char *dst,
static int get_anqp(struct wpa_supplicant *wpa_s, char *dst)
{
u8 dst_addr[ETH_ALEN];
int used;
int used, freq = 0;
char *pos;
#define MAX_ANQP_INFO_ID 100
u16 id[MAX_ANQP_INFO_ID];
@ -7480,6 +7480,15 @@ static int get_anqp(struct wpa_supplicant *wpa_s, char *dst)
pos = dst + used;
if (*pos == ' ')
pos++;
if (os_strncmp(pos, "freq=", 5) == 0) {
freq = atoi(pos + 5);
pos = os_strchr(pos, ' ');
if (!pos)
return -1;
pos++;
}
while (num_id < MAX_ANQP_INFO_ID) {
if (os_strncmp(pos, "hs20:", 5) == 0) {
#ifdef CONFIG_HS20
@ -7514,7 +7523,7 @@ static int get_anqp(struct wpa_supplicant *wpa_s, char *dst)
if (num_id == 0 && !subtypes && !mbo_subtypes)
return -1;
return anqp_send_req(wpa_s, dst_addr, id, num_id, subtypes,
return anqp_send_req(wpa_s, dst_addr, freq, id, num_id, subtypes,
mbo_subtypes);
}

21
wpa_supplicant/interworking.c
View file

@ -2750,27 +2750,27 @@ void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s)
}
int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst,
int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, int freq,
u16 info_ids[], size_t num_ids, u32 subtypes,
u32 mbo_subtypes)
{
struct wpabuf *buf;
struct wpabuf *extra_buf = NULL;
int ret = 0;
int freq;
struct wpa_bss *bss;
int res;
bss = wpa_bss_get_bssid(wpa_s, dst);
if (!bss) {
if (!bss && !freq) {
wpa_printf(MSG_WARNING,
"ANQP: Cannot send query to unknown BSS "
MACSTR, MAC2STR(dst));
"ANQP: Cannot send query without BSS freq info");
return -1;
}
wpa_bss_anqp_unshare_alloc(bss);
freq = bss->freq;
if (bss)
wpa_bss_anqp_unshare_alloc(bss);
if (bss && !freq)
freq = bss->freq;
wpa_msg(wpa_s, MSG_DEBUG,
"ANQP: Query Request to " MACSTR " for %u id(s)",
@ -2789,6 +2789,13 @@ int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst,
if (mbo_subtypes) {
struct wpabuf *mbo;
if (!bss) {
wpa_printf(MSG_WARNING,
"ANQP: Cannot send MBO query to unknown BSS "
MACSTR, MAC2STR(dst));
return -1;
}
mbo = mbo_build_anqp_buf(wpa_s, bss, mbo_subtypes);
if (mbo) {
if (wpabuf_resize(&extra_buf, wpabuf_len(mbo))) {

2
wpa_supplicant/interworking.h
View file

@ -11,7 +11,7 @@
enum gas_query_result;
int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst,
int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, int freq,
u16 info_ids[], size_t num_ids, u32 subtypes,
u32 mbo_subtypes);
void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token,