1ENUM MAC80211_RX_FLA(9) The basic mac80211 driver inte ENUM MAC80211_RX_FLA(9)
2
6 enum_mac80211_rx_flags - receive flags
7
9 enum mac80211_rx_flags {
10 RX_FLAG_MMIC_ERROR,
11 RX_FLAG_DECRYPTED,
12 RX_FLAG_MMIC_STRIPPED,
13 RX_FLAG_IV_STRIPPED,
14 RX_FLAG_FAILED_FCS_CRC,
15 RX_FLAG_FAILED_PLCP_CRC,
16 RX_FLAG_MACTIME_START,
17 RX_FLAG_SHORTPRE,
18 RX_FLAG_HT,
19 RX_FLAG_40MHZ,
20 RX_FLAG_SHORT_GI,
21 RX_FLAG_NO_SIGNAL_VAL,
22 RX_FLAG_HT_GF,
23 RX_FLAG_AMPDU_DETAILS,
24 RX_FLAG_PN_VALIDATED,
25 RX_FLAG_AMPDU_LAST_KNOWN,
26 RX_FLAG_AMPDU_IS_LAST,
27 RX_FLAG_AMPDU_DELIM_CRC_ERROR,
28 RX_FLAG_AMPDU_DELIM_CRC_KNOWN,
29 RX_FLAG_MACTIME_END,
30 RX_FLAG_VHT,
31 RX_FLAG_LDPC,
32 RX_FLAG_STBC_MASK,
33 RX_FLAG_10MHZ,
34 RX_FLAG_5MHZ,
35 RX_FLAG_AMSDU_MORE,
36 RX_FLAG_RADIOTAP_VENDOR_DATA
37 };
38
40 RX_FLAG_MMIC_ERROR
41 Michael MIC error was reported on this frame. Use together with
42 RX_FLAG_MMIC_STRIPPED.
43 RX_FLAG_DECRYPTED
45 This frame was decrypted in hardware.
46 RX_FLAG_MMIC_STRIPPED
48 the Michael MIC is stripped off this frame, verification has been
49 done by the hardware.
50 RX_FLAG_IV_STRIPPED
52 The IV/ICV are stripped from this frame. If this flag is set, the
53 stack cannot do any replay detection hence the driver or hardware
54 will have to do that.
55 RX_FLAG_FAILED_FCS_CRC
57 Set this flag if the FCS check failed on the frame.
58 RX_FLAG_FAILED_PLCP_CRC
60 Set this flag if the PCLP check failed on the frame.
61 RX_FLAG_MACTIME_START
63 The timestamp passed in the RX status (mactime field) is valid and
64 contains the time the first symbol of the MPDU was received. This
65 is useful in monitor mode and for proper IBSS merging.
66 RX_FLAG_SHORTPRE
68 Short preamble was used for this frame
69 RX_FLAG_HT
71 HT MCS was used and rate_idx is MCS index
72 RX_FLAG_40MHZ
74 HT40 (40 MHz) was used
75 RX_FLAG_SHORT_GI
77 Short guard interval was used
78 RX_FLAG_NO_SIGNAL_VAL
80 The signal strength value is not present. Valid only for data
81 frames (mainly A-MPDU)
82 RX_FLAG_HT_GF
84 This frame was received in a HT-greenfield transmission, if the
85 driver fills this value it should add
86 IEEE80211_RADIOTAP_MCS_HAVE_FMT to hw.radiotap_mcs_details to
87 advertise that fact
88 RX_FLAG_AMPDU_DETAILS
90 A-MPDU details are known, in particular the reference number
91 (ampdu_reference) must be populated and be a distinct number for
92 each A-MPDU
93 RX_FLAG_PN_VALIDATED
95 Currently only valid for CCMP/GCMP frames, this flag indicates that
96 the PN was verified for replay protection. Note that this flag is
97 also currently only supported when a frame is also decrypted (ie.
98 RX_FLAG_DECRYPTED must be set)
99 RX_FLAG_AMPDU_LAST_KNOWN
101 last subframe is known, should be set on all subframes of a single
102 A-MPDU
103 RX_FLAG_AMPDU_IS_LAST
105 this subframe is the last subframe of the A-MPDU
106 RX_FLAG_AMPDU_DELIM_CRC_ERROR
108 A delimiter CRC error has been detected on this subframe
109 RX_FLAG_AMPDU_DELIM_CRC_KNOWN
111 The delimiter CRC field is known (the CRC is stored in the
112 ampdu_delimiter_crc field)
113 RX_FLAG_MACTIME_END
115 The timestamp passed in the RX status (mactime field) is valid and
116 contains the time the last symbol of the MPDU (including FCS) was
117 received.
118 RX_FLAG_VHT
120 VHT MCS was used and rate_index is MCS index
121 RX_FLAG_LDPC
123 LDPC was used
124 RX_FLAG_STBC_MASK
126 STBC 2 bit bitmask. 1 - Nss=1, 2 - Nss=2, 3 - Nss=3
127 RX_FLAG_10MHZ
129 10 MHz (half channel) was used
130 RX_FLAG_5MHZ
132 5 MHz (quarter channel) was used
133 RX_FLAG_AMSDU_MORE
135 Some drivers may prefer to report separate A-MSDU subframes instead
136 of a one huge frame for performance reasons. All, but the last MSDU
137 from an A-MSDU should have this flag set. E.g. if an A-MSDU has 3
138 frames, the first 2 must have the flag set, while the 3rd (last)
139 one must not have this flag set. The flag is used to deal with
140 retransmission/duplication recovery properly since A-MSDU subframes
141 share the same sequence number. Reported subframes can be either
142 regular MSDU or singly A-MSDUs. Subframes must not be interleaved
143 with other frames.
144 RX_FLAG_RADIOTAP_VENDOR_DATA
146 This frame contains vendor-specific radiotap data in the skb->data
147 (before the frame) as described by the struct
148 ieee80211_vendor_radiotap.
149
151 These flags are used with the flag member of struct
152 ieee80211_rx_status.
153
155 Johannes Berg <johannes@sipsolutions.net>
156 Author.
157
159Kernel Hackers Manual 2.6. June 2019 ENUM MAC80211_RX_FLA(9)