From 8c3ed7aa2b9ef666195b789e9b02e28383243fa8 Mon Sep 17 00:00:00 2001 From: Markus Theil Date: Wed, 15 Jan 2020 13:55:22 +0100 Subject: nl80211: add src and dst addr attributes for control port tx/rx When using control port over nl80211 in AP mode with pre-authentication, APs need to forward frames to other APs defined by their MAC address. Before this patch, pre-auth frames reaching user space over nl80211 control port have no longer any information about the dest attached, which can be used for forwarding to a controller or injecting the frame back to a ethernet interface over a AF_PACKET socket. Analog problems exist, when forwarding pre-auth frames from AP -> STA. This patch therefore adds the NL80211_ATTR_DST_MAC and NL80211_ATTR_SRC_MAC attributes to provide more context information when forwarding. The respective arguments are optional on tx and included on rx. Therefore unaware existing software is not affected. Software which wants to detect this feature, can do so by checking against: NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211_MAC_ADDRS Signed-off-by: Markus Theil Link: https://lore.kernel.org/r/20200115125522.3755-1-markus.theil@tu-ilmenau.de [split into separate cfg80211/mac80211 patches] Signed-off-by: Johannes Berg --- net/wireless/rdev-ops.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'net/wireless/rdev-ops.h') diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h index e853a4fe6f97..39e6c1db3092 100644 --- a/net/wireless/rdev-ops.h +++ b/net/wireless/rdev-ops.h @@ -730,14 +730,14 @@ static inline int rdev_mgmt_tx(struct cfg80211_registered_device *rdev, static inline int rdev_tx_control_port(struct cfg80211_registered_device *rdev, struct net_device *dev, const void *buf, size_t len, - const u8 *dest, __be16 proto, - const bool noencrypt) + const u8 *dest, const u8 *src, + __be16 proto, const bool noencrypt) { int ret; trace_rdev_tx_control_port(&rdev->wiphy, dev, buf, len, - dest, proto, noencrypt); + dest, src, proto, noencrypt); ret = rdev->ops->tx_control_port(&rdev->wiphy, dev, buf, len, - dest, proto, noencrypt); + dest, src, proto, noencrypt); trace_rdev_return_int(&rdev->wiphy, ret); return ret; } -- cgit v1.2.3