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mac80211: add control port protocol TX control flag

Browse source 
A lot of drivers check the frame protocol for ETH_P_PAE,
for various reasons (like making those more reliable).
Add a new flags bitmap to the TX control info and a new
flag indicating the control port protocol is in use to
let all drivers also apply such logic to other control
port protocols, should they be configured.

Also use the new flag in the iwlwifi drivers.

Signed-off-by: Johannes Berg <[email protected]>
This commit is contained in:
Johannes Berg 2013-07-02 18:09:12 +02:00
commit af61a16518
7 changed files with 34 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

5
net/mac80211/rc80211_minstrel_ht.c
View file

@ -439,12 +439,13 @@ minstrel_aggr_check(struct ieee80211_sta *pubsta, struct sk_buff *skb)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
u16 tid;
if (unlikely(!ieee80211_is_data_qos(hdr->frame_control)))
return;
if (unlikely(skb->protocol == cpu_to_be16(ETH_P_PAE)))
if (unlikely(info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO))
return;
tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
@ -776,7 +777,7 @@ minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
/* Don't use EAPOL frames for sampling on non-mrr hw */
if (mp->hw->max_rates == 1 &&
txrc->skb->protocol == cpu_to_be16(ETH_P_PAE))
(info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO))
sample_idx = -1;
else
sample_idx = minstrel_get_sample_rate(mp, mi);

8
net/mac80211/tx.c
View file

@ -539,9 +539,11 @@ ieee80211_tx_h_check_control_port_protocol(struct ieee80211_tx_data *tx)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
if (unlikely(tx->sdata->control_port_protocol == tx->skb->protocol &&
tx->sdata->control_port_no_encrypt))
info->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
if (unlikely(tx->sdata->control_port_protocol == tx->skb->protocol)) {
if (tx->sdata->control_port_no_encrypt)
info->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
info->control.flags |= IEEE80211_TX_CTRL_PORT_CTRL_PROTO;
}
return TX_CONTINUE;
}