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P2P: Add wfd_dev_info= field for device found event

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This field allows adds enough information into the P2P-DEVICE-FOUND
events to figure out if the peer supports Wi-Fi Display.

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
This commit is contained in:
Dmitry Shmidt 2013-11-25 14:56:38 -08:00 committed by Jouni Malinen
parent e706d2d30d
commit b125c48fce
3 changed files with 56 additions and 3 deletions
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15
wpa_supplicant/p2p_supplicant.c
View file

@ -33,6 +33,7 @@
#include "offchannel.h"
#include "wps_supplicant.h"
#include "p2p_supplicant.h"
#include "wifi_display.h"
/*
@ -1442,18 +1443,28 @@ void wpas_dev_found(void *ctx, const u8 *addr,
#ifndef CONFIG_NO_STDOUT_DEBUG
struct wpa_supplicant *wpa_s = ctx;
char devtype[WPS_DEV_TYPE_BUFSIZE];
char *wfd_dev_info_hex = NULL;
#ifdef CONFIG_WIFI_DISPLAY
wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
WFD_SUBELEM_DEVICE_INFO);
#endif /* CONFIG_WIFI_DISPLAY */
wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
" p2p_dev_addr=" MACSTR
" pri_dev_type=%s name='%s' config_methods=0x%x "
"dev_capab=0x%x group_capab=0x%x",
"dev_capab=0x%x group_capab=0x%x%s%s",
MAC2STR(addr), MAC2STR(info->p2p_device_addr),
wps_dev_type_bin2str(info->pri_dev_type, devtype,
sizeof(devtype)),
info->device_name, info->config_methods,
info->dev_capab, info->group_capab);
info->dev_capab, info->group_capab,
wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
wfd_dev_info_hex ? wfd_dev_info_hex : "");
#endif /* CONFIG_NO_STDOUT_DEBUG */
os_free(wfd_dev_info_hex);
wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
}

41
wpa_supplicant/wifi_display.c
View file

@ -16,6 +16,9 @@
#include "wifi_display.h"
#define WIFI_DISPLAY_SUBELEM_HEADER_LEN 3
int wifi_display_init(struct wpa_global *global)
{
global->wifi_display = 1;
@ -249,3 +252,41 @@ int wifi_display_subelem_get(struct wpa_global *global, char *cmd,
1,
wpabuf_len(global->wfd_subelem[subelem]) - 1);
}
char * wifi_display_subelem_hex(const struct wpabuf *wfd_subelems, u8 id)
{
char *subelem = NULL;
const u8 *buf;
size_t buflen;
size_t i = 0;
u16 elen;
if (!wfd_subelems)
return NULL;
buf = wpabuf_head_u8(wfd_subelems);
if (!buf)
return NULL;
buflen = wpabuf_len(wfd_subelems);
while (i + WIFI_DISPLAY_SUBELEM_HEADER_LEN < buflen) {
elen = WPA_GET_BE16(buf + i + 1);
if (buf[i] == id) {
subelem = os_zalloc(2 * elen + 1);
if (!subelem)
return NULL;
wpa_snprintf_hex(subelem, 2 * elen + 1,
buf + i +
WIFI_DISPLAY_SUBELEM_HEADER_LEN,
elen);
break;
}
i += elen + WIFI_DISPLAY_SUBELEM_HEADER_LEN;
}
return subelem;
}

1
wpa_supplicant/wifi_display.h
View file

@ -16,5 +16,6 @@ void wifi_display_enable(struct wpa_global *global, int enabled);
int wifi_display_subelem_set(struct wpa_global *global, char *cmd);
int wifi_display_subelem_get(struct wpa_global *global, char *cmd,
char *buf, size_t buflen);
char * wifi_display_subelem_hex(const struct wpabuf *wfd_subelems, u8 id);
#endif /* WIFI_DISPLAY_H */