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mac80211: Allow noack flag overwrite for injected frames 

Allow injected unicast frames to be sent without having to wait
for an ACK.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Helmut Schaa 2011-09-29 13:42:25 +02:00 committed by John W. Linville
parent a5abbcb220
commit 893d73f4a1
2 changed files with 14 additions and 2 deletions
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1
include/net/ieee80211_radiotap.h
View File

@ -251,6 +251,7 @@ enum ieee80211_radiotap_type {
* retries */
#define IEEE80211_RADIOTAP_F_TX_CTS 0x0002 /* used cts 'protection' */
#define IEEE80211_RADIOTAP_F_TX_RTS 0x0004 /* used rts/cts handshake */
#define IEEE80211_RADIOTAP_F_TX_NOACK 0x0008 /* don't expect an ack */
/* For IEEE80211_RADIOTAP_MCS */

15
net/mac80211/tx.c
View File

@ -1054,6 +1054,7 @@ static bool __ieee80211_parse_tx_radiotap(struct ieee80211_tx_data *tx,
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
int ret = ieee80211_radiotap_iterator_init(&iterator, rthdr, skb->len,
NULL);
u16 txflags;
info->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
tx->flags &= ~IEEE80211_TX_FRAGMENTED;
@ -1102,6 +1103,13 @@ static bool __ieee80211_parse_tx_radiotap(struct ieee80211_tx_data *tx,
tx->flags |= IEEE80211_TX_FRAGMENTED;
break;
case IEEE80211_RADIOTAP_TX_FLAGS:
txflags = le16_to_cpu(get_unaligned((__le16*)
iterator.this_arg));
if (txflags & IEEE80211_RADIOTAP_F_TX_NOACK)
info->flags |= IEEE80211_TX_CTL_NO_ACK;
break;
/*
* Please update the file
* Documentation/networking/mac80211-injection.txt
@ -1266,8 +1274,11 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata,
tx->flags |= IEEE80211_TX_UNICAST;
if (unlikely(local->wifi_wme_noack_test))
info->flags |= IEEE80211_TX_CTL_NO_ACK;
else
info->flags &= ~IEEE80211_TX_CTL_NO_ACK;
/*
* Flags are initialized to 0. Hence, no need to
* explicitly unset IEEE80211_TX_CTL_NO_ACK since
* it might already be set for injected frames.
*/
}
if (tx->flags & IEEE80211_TX_FRAGMENTED) {