diff options
| -rw-r--r-- | include/linux/nl80211.h | 10 | ||||
| -rw-r--r-- | include/net/cfg80211.h | 16 | ||||
| -rw-r--r-- | net/wireless/mlme.c | 14 | ||||
| -rw-r--r-- | net/wireless/nl80211.c | 19 | ||||
| -rw-r--r-- | net/wireless/nl80211.h | 2 |
5 files changed, 58 insertions, 3 deletions
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index c29a284c27e6..09474ab7de8c 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -517,7 +517,13 @@ * For the event, the %NL80211_ATTR_MAC attribute carries the TA and * other attributes like the interface index are present. * If used as the command it must have an interface index and you can - * only unsubscribe from the event by closing the socket. + * only unsubscribe from the event by closing the socket. Subscription + * is also for %NL80211_CMD_UNEXPECTED_4ADDR_FRAME events. + * + * @NL80211_CMD_UNEXPECTED_4ADDR_FRAME: Sent as an event indicating that the + * associated station identified by %NL80211_ATTR_MAC sent a 4addr frame + * and wasn't already in a 4-addr VLAN. The event will be sent similarly + * to the %NL80211_CMD_UNEXPECTED_FRAME event, to the same listener. * * @NL80211_CMD_PROBE_CLIENT: Probe an associated station on an AP interface * by sending a null data frame to it and reporting when the frame is @@ -667,6 +673,8 @@ enum nl80211_commands { NL80211_CMD_REGISTER_BEACONS, + NL80211_CMD_UNEXPECTED_4ADDR_FRAME, + /* add new commands above here */ /* used to define NL80211_CMD_MAX below */ diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index d01307f54faa..be3535f0895e 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -3227,6 +3227,22 @@ bool cfg80211_rx_spurious_frame(struct net_device *dev, const u8 *addr, gfp_t gfp); /** + * cfg80211_rx_unexpected_4addr_frame - inform about unexpected WDS frame + * @dev: The device the frame matched to + * @addr: the transmitter address + * @gfp: context flags + * + * This function is used in AP mode (only!) to inform userspace that + * an associated station sent a 4addr frame but that wasn't expected. + * It is allowed and desirable to send this event only once for each + * station to avoid event flooding. + * Returns %true if the frame was passed to userspace (or this failed + * for a reason other than not having a subscription.) + */ +bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, + const u8 *addr, gfp_t gfp); + +/** * cfg80211_probe_status - notify userspace about probe status * @dev: the device the probe was sent on * @addr: the address of the peer diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c index f4d868b1e11c..34891e08c54a 100644 --- a/net/wireless/mlme.c +++ b/net/wireless/mlme.c @@ -1123,3 +1123,17 @@ bool cfg80211_rx_spurious_frame(struct net_device *dev, return nl80211_unexpected_frame(dev, addr, gfp); } EXPORT_SYMBOL(cfg80211_rx_spurious_frame); + +bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, + const u8 *addr, gfp_t gfp) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && + wdev->iftype != NL80211_IFTYPE_P2P_GO && + wdev->iftype != NL80211_IFTYPE_AP_VLAN)) + return false; + + return nl80211_unexpected_4addr_frame(dev, addr, gfp); +} +EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 68b6708b996f..5b659068b020 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -7289,7 +7289,8 @@ void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev, nlmsg_free(msg); } -bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp) +static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, + const u8 *addr, gfp_t gfp) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); @@ -7305,7 +7306,7 @@ bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp) if (!msg) return true; - hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UNEXPECTED_FRAME); + hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); if (!hdr) { nlmsg_free(msg); return true; @@ -7330,6 +7331,20 @@ bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp) return true; } +bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp) +{ + return __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, + addr, gfp); +} + +bool nl80211_unexpected_4addr_frame(struct net_device *dev, + const u8 *addr, gfp_t gfp) +{ + return __nl80211_unexpected_frame(dev, + NL80211_CMD_UNEXPECTED_4ADDR_FRAME, + addr, gfp); +} + int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, struct net_device *netdev, u32 nlpid, int freq, const u8 *buf, size_t len, gfp_t gfp) diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h index d94456e54f4e..12bf4d185abe 100644 --- a/net/wireless/nl80211.h +++ b/net/wireless/nl80211.h @@ -119,5 +119,7 @@ void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp); +bool nl80211_unexpected_4addr_frame(struct net_device *dev, + const u8 *addr, gfp_t gfp); #endif /* __NET_WIRELESS_NL80211_H */ |