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| author | Markus Theil <markus.theil@tu-ilmenau.de> | 2020-01-15 13:55:22 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2020-02-07 12:58:37 +0100 |
| commit | 8c3ed7aa2b9ef666195b789e9b02e28383243fa8 (patch) | |
| tree | 271a9d36a6af297b55b5fb4ecaa08b92db413546 /net/mac80211 | |
| parent | c0058df73309906ef4d5383fbaa10c43ebddc48a (diff) | |
| download | linux-8c3ed7aa2b9ef666195b789e9b02e28383243fa8.tar.gz linux-8c3ed7aa2b9ef666195b789e9b02e28383243fa8.tar.bz2 linux-8c3ed7aa2b9ef666195b789e9b02e28383243fa8.zip | |
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 <markus.theil@tu-ilmenau.de>
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 <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 3 | ||||
| -rw-r--r-- | net/mac80211/tx.c | 3 |
2 files changed, 4 insertions, 2 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 8a49d78ad7c9..da9eaa9ee37e 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1792,7 +1792,8 @@ void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); void ieee80211_clear_fast_xmit(struct sta_info *sta); int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, const u8 *buf, size_t len, - const u8 *dest, __be16 proto, bool unencrypted); + const u8 *dest, const u8 *src, __be16 proto, + bool unencrypted); int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, const u8 *buf, size_t len); diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 4296d9d71311..059c66b6bb5c 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -5285,7 +5285,8 @@ void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, const u8 *buf, size_t len, - const u8 *dest, __be16 proto, bool unencrypted) + const u8 *dest, const u8 *src, __be16 proto, + bool unencrypted) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; |