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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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11
net/wireless/nl80211.c
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@@ -624,6 +624,7 @@ const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
.len = SAE_PASSWORD_MAX_LEN },
[NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
[NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
[NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
};
/* policy for the key attributes */
@@ -3940,6 +3941,10 @@ static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
key.type != NL80211_KEYTYPE_GROUP)
return -EINVAL;
if (key.type == NL80211_KEYTYPE_GROUP &&
info->attrs[NL80211_ATTR_VLAN_ID])
key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
if (!rdev->ops->add_key)
return -EOPNOTSUPP;
@@ -5711,6 +5716,9 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
if (info->attrs[NL80211_ATTR_STA_AID])
params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
if (info->attrs[NL80211_ATTR_VLAN_ID])
params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
params.listen_interval =
nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
@@ -5856,6 +5864,9 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
params.listen_interval =
nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
if (info->attrs[NL80211_ATTR_VLAN_ID])
params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
params.support_p2p_ps =
nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);