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mac80211: Add support for tx_control_port

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Signed-off-by: Denis Kenzior <denkenz@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Denis Kenzior 2018-03-26 12:52:50 -05:00 committed by Johannes Berg
parent 1224f5831a
commit 9118064914
3 changed files with 50 additions and 0 deletions
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1
net/mac80211/cfg.c
View file

@ -3791,4 +3791,5 @@ const struct cfg80211_ops mac80211_config_ops = {
.add_nan_func = ieee80211_add_nan_func,
.del_nan_func = ieee80211_del_nan_func,
.set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
.tx_control_port = ieee80211_tx_control_port,
};

3
net/mac80211/ieee80211_i.h
View file

@ -1735,6 +1735,9 @@ void ieee80211_check_fast_xmit(struct sta_info *sta);
void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
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);
/* HT */
void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,

46
net/mac80211/tx.c
View file

@ -4757,3 +4757,49 @@ void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
ieee80211_xmit(sdata, NULL, skb);
local_bh_enable();
}
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)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
struct sk_buff *skb;
struct ethhdr *ehdr;
u32 flags;
/* Only accept CONTROL_PORT_PROTOCOL configured in CONNECT/ASSOCIATE
* or Pre-Authentication
*/
if (proto != sdata->control_port_protocol &&
proto != cpu_to_be16(ETH_P_PREAUTH))
return -EINVAL;
if (unencrypted)
flags = IEEE80211_TX_INTFL_DONT_ENCRYPT;
else
flags = 0;
skb = dev_alloc_skb(local->hw.extra_tx_headroom +
sizeof(struct ethhdr) + len);
if (!skb)
return -ENOMEM;
skb_reserve(skb, local->hw.extra_tx_headroom + sizeof(struct ethhdr));
skb_put_data(skb, buf, len);
ehdr = skb_push(skb, sizeof(struct ethhdr));
memcpy(ehdr->h_dest, dest, ETH_ALEN);
memcpy(ehdr->h_source, sdata->vif.addr, ETH_ALEN);
ehdr->h_proto = proto;
skb->dev = dev;
skb->protocol = htons(ETH_P_802_3);
skb_reset_network_header(skb);
skb_reset_mac_header(skb);
__ieee80211_subif_start_xmit(skb, skb->dev, flags);
return 0;
}