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cfg80211: VLAN offload support for set_key and set_sta_vlan

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This provides an alternative mechanism for AP VLAN support where a
single netdev is used with VLAN tagged frames instead of separate
netdevs for each VLAN without tagged frames from the WLAN driver.

By setting NL80211_EXT_FEATURE_VLAN_OFFLOAD flag the driver indicates
support for a single netdev with VLAN tagged frames. Separate
VLAN-specific netdevs can be added using RTM_NEWLINK/IFLA_VLAN_ID
similarly to Ethernet. NL80211_CMD_NEW_KEY (for group keys),
NL80211_CMD_NEW_STATION, and NL80211_CMD_SET_STATION will optionally
specify vlan_id using NL80211_ATTR_VLAN_ID.

Signed-off-by: Gurumoorthi Gnanasambandhan <gguru@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Link: https://lore.kernel.org/r/20191031214640.5012-1-jouni@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Gurumoorthi Gnanasambandhan
2019-10-31 23:46:40 +02:00
committed by Johannes Berg
parent 6912daed05
commit 14f34e36b3
3 changed files with 41 additions and 0 deletions
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26
include/uapi/linux/nl80211.h
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@@ -248,6 +248,22 @@
* %NL80211_ATTR_SAE_PASSWORD.
*/
/**
* DOC: VLAN offload support for setting group keys and binding STAs to VLANs
*
* By setting @NL80211_EXT_FEATURE_VLAN_OFFLOAD flag drivers can indicate they
* support offloading VLAN functionality in a manner where the driver exposes a
* single netdev that uses VLAN tagged frames and separate VLAN-specific netdevs
* can then be added using RTM_NEWLINK/IFLA_VLAN_ID similarly to the Ethernet
* case. Frames received from stations that are not assigned to any VLAN are
* delivered on the main netdev and frames to such stations can be sent through
* that main netdev.
*
* %NL80211_CMD_NEW_KEY (for group keys), %NL80211_CMD_NEW_STATION, and
* %NL80211_CMD_SET_STATION will optionally specify vlan_id using
* %NL80211_ATTR_VLAN_ID.
*/
/**
* enum nl80211_commands - supported nl80211 commands
*
@@ -2381,6 +2397,9 @@ enum nl80211_commands {
* the allowed channel bandwidth configurations. (u8 attribute)
* Defined by IEEE P802.11ay/D4.0 section 9.4.2.251, Table 13.
*
* @NL80211_ATTR_VLAN_ID: VLAN ID (1..4094) for the station and VLAN group key
* (u16).
*
* @NUM_NL80211_ATTR: total number of nl80211_attrs available
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
@@ -2843,6 +2862,8 @@ enum nl80211_attrs {
NL80211_ATTR_WIPHY_EDMG_CHANNELS,
NL80211_ATTR_WIPHY_EDMG_BW_CONFIG,
NL80211_ATTR_VLAN_ID,
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@@ -5492,6 +5513,10 @@ enum nl80211_feature_flags {
* @NL80211_EXT_FEATURE_SAE_OFFLOAD: Device wants to do SAE authentication in
* station mode (SAE password is passed as part of the connect command).
*
* @NL80211_EXT_FEATURE_VLAN_OFFLOAD: The driver supports a single netdev
* with VLAN tagged frames and separate VLAN-specific netdevs added using
* vconfig similarly to the Ethernet case.
*
* @NUM_NL80211_EXT_FEATURES: number of extended features.
* @MAX_NL80211_EXT_FEATURES: highest extended feature index.
*/
@@ -5537,6 +5562,7 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_EXT_KEY_ID,
NL80211_EXT_FEATURE_STA_TX_PWR,
NL80211_EXT_FEATURE_SAE_OFFLOAD,
NL80211_EXT_FEATURE_VLAN_OFFLOAD,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,