This allows drivers to tell mac80211 whether given
frame is to be processed regularly but skip
monitor interface delivery or vice versa.
Signed-off-by: Grzegorz Bajorski <grzegorz.bajor...@tieto.com>
---
include/net/mac80211.h | 11 +++++++++++
net/mac80211/rx.c | 5 +++--
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 7c30faf..a35e584 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1014,6 +1014,14 @@ ieee80211_tx_info_clear_status(struct ieee80211_tx_info
*info)
* @RX_FLAG_AMPDU_DELIM_CRC_KNOWN: The delimiter CRC field is known (the CRC
* is stored in the @ampdu_delimiter_crc field)
* @RX_FLAG_LDPC: LDPC was used
+ * @RX_FLAG_ONLY_MONITOR: Report frame only to monitor interfaces without
+ * processing it in any regular way.
+ * This is useful if drivers offload some frames but still want to report
+ * them for sniffing purposes.
+ * @RX_FLAG_SKIP_MONITOR: Process and report frame to all interfaces except
+ * monitor interfaces.
+ * This is useful if drivers offload some frames but still want to report
+ * them for sniffing purposes.
* @RX_FLAG_STBC_MASK: STBC 2 bit bitmask. 1 - Nss=1, 2 - Nss=2, 3 - Nss=3
* @RX_FLAG_10MHZ: 10 MHz (half channel) was used
* @RX_FLAG_5MHZ: 5 MHz (quarter channel) was used
@@ -1054,6 +1062,8 @@ enum mac80211_rx_flags {
RX_FLAG_MACTIME_END = BIT(21),
RX_FLAG_VHT = BIT(22),
RX_FLAG_LDPC = BIT(23),
+ RX_FLAG_ONLY_MONITOR = BIT(24),
+ RX_FLAG_SKIP_MONITOR = BIT(25),
RX_FLAG_STBC_MASK = BIT(26) | BIT(27),
RX_FLAG_10MHZ = BIT(28),
RX_FLAG_5MHZ = BIT(29),
@@ -1072,6 +1082,7 @@ enum mac80211_rx_flags {
* @RX_VHT_FLAG_160MHZ: 160 MHz was used
* @RX_VHT_FLAG_BF: packet was beamformed
*/
+
enum mac80211_rx_vht_flags {
RX_VHT_FLAG_80MHZ = BIT(0),
RX_VHT_FLAG_160MHZ = BIT(1),
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 1f82753..43ad7a5 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -122,7 +122,8 @@ static inline bool should_drop_frame(struct sk_buff *skb,
int present_fcs_len,
hdr = (void *)(skb->data + rtap_vendor_space);
if (status->flag & (RX_FLAG_FAILED_FCS_CRC |
- RX_FLAG_FAILED_PLCP_CRC))
+ RX_FLAG_FAILED_PLCP_CRC |
+ RX_FLAG_ONLY_MONITOR))
return true;
if (unlikely(skb->len < 16 + present_fcs_len + rtap_vendor_space))
@@ -507,7 +508,7 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct
sk_buff *origskb,
return NULL;
}
- if (!local->monitors) {
+ if (!local->monitors || (status->flag & RX_FLAG_SKIP_MONITOR)) {
if (should_drop_frame(origskb, present_fcs_len,
rtap_vendor_space)) {
dev_kfree_skb(origskb);
--
2.3.7
--
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