The radiotap specification contains a flag to indicate that the sequence
number of an injected frame should not be overwritten. Parse this flag
and define and set a corresponding Tx control flag.
Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@xxxxxxxxxxx>
---
include/net/ieee80211_radiotap.h | 1 +
include/net/mac80211.h | 3 +++
net/mac80211/tx.c | 2 ++
3 files changed, 6 insertions(+)
diff --git a/include/net/ieee80211_radiotap.h b/include/net/ieee80211_radiotap.h
index 459d355f6..19c00d100 100644
--- a/include/net/ieee80211_radiotap.h
+++ b/include/net/ieee80211_radiotap.h
@@ -117,6 +117,7 @@ enum ieee80211_radiotap_tx_flags {
IEEE80211_RADIOTAP_F_TX_CTS = 0x0002,
IEEE80211_RADIOTAP_F_TX_RTS = 0x0004,
IEEE80211_RADIOTAP_F_TX_NOACK = 0x0008,
+ IEEE80211_RADIOTAP_F_TX_NOSEQNO = 0x0010,
};
/* for IEEE80211_RADIOTAP_MCS "have" flags */
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 11d5610d2..6615fe450 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -825,6 +825,8 @@ enum mac80211_tx_info_flags {
* @IEEE80211_TX_CTRL_SKIP_MPATH_LOOKUP: This frame skips mesh path lookup
* @IEEE80211_TX_CTRL_HW_80211_ENCAP: This frame uses hardware encapsulation
* (header conversion)
+ * @IEEE80211_TX_CTRL_NO_SEQNO: Do not overwrite the sequence number that
+ * has already been assigned to this frame.
*
* These flags are used in tx_info->control.flags.
*/
@@ -836,6 +838,7 @@ enum mac80211_tx_control_flags {
IEEE80211_TX_CTRL_FAST_XMIT = BIT(4),
IEEE80211_TX_CTRL_SKIP_MPATH_LOOKUP = BIT(5),
IEEE80211_TX_CTRL_HW_80211_ENCAP = BIT(6),
+ IEEE80211_TX_CTRL_NO_SEQNO = BIT(7),
};
/*
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 62d01ab26..040b0ef18 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -2084,6 +2084,8 @@ static bool ieee80211_parse_tx_radiotap(struct ieee80211_local *local,
txflags = get_unaligned_le16(iterator.this_arg);
if (txflags & IEEE80211_RADIOTAP_F_TX_NOACK)
info->flags |= IEEE80211_TX_CTL_NO_ACK;
+ if (txflags & IEEE80211_RADIOTAP_F_TX_NOSEQNO)
+ info->control.flags |= IEEE80211_TX_CTRL_NO_SEQNO;
break;
case IEEE80211_RADIOTAP_RATE:
--
2.27.0
