diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 66cedf6eb5c2421b3fda7339df9290dbb1e3492e..17f2a768e2ada1676fed7e1a76f7d06978f131ba 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1694,6 +1694,23 @@ static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr) return false; } +/** + * ieee80211_is_public_action - check if frame is a public action frame + * @hdr: the frame + * @len: length of the frame + */ +static inline bool ieee80211_is_public_action(struct ieee80211_hdr *hdr, + size_t len) +{ + struct ieee80211_mgmt *mgmt = (void *)hdr; + + if (len < IEEE80211_MIN_ACTION_SIZE) + return false; + if (!ieee80211_is_action(hdr->frame_control)) + return false; + return mgmt->u.action.category == WLAN_CATEGORY_PUBLIC; +} + /** * ieee80211_fhss_chan_to_freq - get channel frequency * @channel: the FHSS channel diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 2a85fdfebde2c2044966c0c0bbf6012106fac196..7d226417ef46286753351db476db1ebaf6b90f1c 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -2797,10 +2797,17 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx, return 0; } else if (!ieee80211_bssid_match(bssid, sdata->vif.addr)) { + /* + * Accept public action frames even when the + * BSSID doesn't match, this is used for P2P + * and location updates. Note that mac80211 + * itself never looks at these frames. + */ + if (!(status->rx_flags & IEEE80211_RX_IN_SCAN) && + ieee80211_is_public_action(hdr, skb->len)) + return 1; if (!(status->rx_flags & IEEE80211_RX_IN_SCAN) && - !ieee80211_is_beacon(hdr->frame_control) && - !(ieee80211_is_action(hdr->frame_control) && - sdata->vif.p2p)) + !ieee80211_is_beacon(hdr->frame_control)) return 0; status->rx_flags &= ~IEEE80211_RX_RA_MATCH; }