diff options
Diffstat (limited to 'src/p2p/p2p_sd.c')
| -rw-r--r-- | src/p2p/p2p_sd.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/p2p/p2p_sd.c b/src/p2p/p2p_sd.c index 4b027fa..3e49fdc 100644 --- a/src/p2p/p2p_sd.c +++ b/src/p2p/p2p_sd.c @@ -15,15 +15,55 @@ #include "p2p.h" +#ifdef CONFIG_WIFI_DISPLAY +static int wfd_wsd_supported(struct wpabuf *wfd) +{ + const u8 *pos, *end; + u8 subelem; + u16 len; + + if (wfd == NULL) + return 0; + + pos = wpabuf_head(wfd); + end = pos + wpabuf_len(wfd); + + while (pos + 3 <= end) { + subelem = *pos++; + len = WPA_GET_BE16(pos); + pos += 2; + if (pos + len > end) + break; + + if (subelem == WFD_SUBELEM_DEVICE_INFO && len >= 6) { + u16 info = WPA_GET_BE16(pos); + return !!(info & 0x0040); + } + + pos += len; + } + + return 0; +} +#endif /* CONFIG_WIFI_DISPLAY */ + struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p, struct p2p_device *dev) { struct p2p_sd_query *q; + int wsd = 0; if (!(dev->info.dev_capab & P2P_DEV_CAPAB_SERVICE_DISCOVERY)) return NULL; /* peer does not support SD */ +#ifdef CONFIG_WIFI_DISPLAY + if (wfd_wsd_supported(dev->info.wfd_subelems)) + wsd = 1; +#endif /* CONFIG_WIFI_DISPLAY */ for (q = p2p->sd_queries; q; q = q->next) { + /* Use WSD only if the peer indicates support or it */ + if (q->wsd && !wsd) + continue; if (q->for_all_peers && !(dev->flags & P2P_DEV_SD_INFO)) return q; if (!q->for_all_peers && @@ -889,6 +929,19 @@ void * p2p_sd_request(struct p2p_data *p2p, const u8 *dst, } +#ifdef CONFIG_WIFI_DISPLAY +void * p2p_sd_request_wfd(struct p2p_data *p2p, const u8 *dst, + const struct wpabuf *tlvs) +{ + struct p2p_sd_query *q; + q = p2p_sd_request(p2p, dst, tlvs); + if (q) + q->wsd = 1; + return q; +} +#endif /* CONFIG_WIFI_DISPLAY */ + + void p2p_sd_service_update(struct p2p_data *p2p) { p2p->srv_update_indic++; |