diff options
| -rw-r--r-- | include/net/mac80211.h | 53 | ||||
| -rw-r--r-- | net/mac80211/rx.c | 42 |
2 files changed, 80 insertions, 15 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h index d9cef31f4cbf..edc235c51a68 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -676,21 +676,41 @@ ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info) * @RX_FLAG_HT_GF: This frame was received in a HT-greenfield transmission, if * the driver fills this value it should add %IEEE80211_RADIOTAP_MCS_HAVE_FMT * to hw.radiotap_mcs_details to advertise that fact + * @RX_FLAG_AMPDU_DETAILS: A-MPDU details are known, in particular the reference + * number (@ampdu_reference) must be populated and be a distinct number for + * each A-MPDU + * @RX_FLAG_AMPDU_REPORT_ZEROLEN: driver reports 0-length subframes + * @RX_FLAG_AMPDU_IS_ZEROLEN: This is a zero-length subframe, for + * monitoring purposes only + * @RX_FLAG_AMPDU_LAST_KNOWN: last subframe is known, should be set on all + * subframes of a single A-MPDU + * @RX_FLAG_AMPDU_IS_LAST: this subframe is the last subframe of the A-MPDU + * @RX_FLAG_AMPDU_DELIM_CRC_ERROR: A delimiter CRC error has been detected + * on this subframe + * @RX_FLAG_AMPDU_DELIM_CRC_KNOWN: The delimiter CRC field is known (the CRC + * is stored in the @ampdu_delimiter_crc field) */ enum mac80211_rx_flags { - RX_FLAG_MMIC_ERROR = 1<<0, - RX_FLAG_DECRYPTED = 1<<1, - RX_FLAG_MMIC_STRIPPED = 1<<3, - RX_FLAG_IV_STRIPPED = 1<<4, - RX_FLAG_FAILED_FCS_CRC = 1<<5, - RX_FLAG_FAILED_PLCP_CRC = 1<<6, - RX_FLAG_MACTIME_MPDU = 1<<7, - RX_FLAG_SHORTPRE = 1<<8, - RX_FLAG_HT = 1<<9, - RX_FLAG_40MHZ = 1<<10, - RX_FLAG_SHORT_GI = 1<<11, - RX_FLAG_NO_SIGNAL_VAL = 1<<12, - RX_FLAG_HT_GF = 1<<13, + RX_FLAG_MMIC_ERROR = BIT(0), + RX_FLAG_DECRYPTED = BIT(1), + RX_FLAG_MMIC_STRIPPED = BIT(3), + RX_FLAG_IV_STRIPPED = BIT(4), + RX_FLAG_FAILED_FCS_CRC = BIT(5), + RX_FLAG_FAILED_PLCP_CRC = BIT(6), + RX_FLAG_MACTIME_MPDU = BIT(7), + RX_FLAG_SHORTPRE = BIT(8), + RX_FLAG_HT = BIT(9), + RX_FLAG_40MHZ = BIT(10), + RX_FLAG_SHORT_GI = BIT(11), + RX_FLAG_NO_SIGNAL_VAL = BIT(12), + RX_FLAG_HT_GF = BIT(13), + RX_FLAG_AMPDU_DETAILS = BIT(14), + RX_FLAG_AMPDU_REPORT_ZEROLEN = BIT(15), + RX_FLAG_AMPDU_IS_ZEROLEN = BIT(16), + RX_FLAG_AMPDU_LAST_KNOWN = BIT(17), + RX_FLAG_AMPDU_IS_LAST = BIT(18), + RX_FLAG_AMPDU_DELIM_CRC_ERROR = BIT(19), + RX_FLAG_AMPDU_DELIM_CRC_KNOWN = BIT(20), }; /** @@ -714,17 +734,22 @@ enum mac80211_rx_flags { * HT rates are use (RX_FLAG_HT) * @flag: %RX_FLAG_* * @rx_flags: internal RX flags for mac80211 + * @ampdu_reference: A-MPDU reference number, must be a different value for + * each A-MPDU but the same for each subframe within one A-MPDU + * @ampdu_delimiter_crc: A-MPDU delimiter CRC */ struct ieee80211_rx_status { u64 mactime; u32 device_timestamp; - u16 flag; + u32 ampdu_reference; + u32 flag; u16 freq; u8 rate_idx; u8 rx_flags; u8 band; u8 antenna; s8 signal; + u8 ampdu_delimiter_crc; }; /** diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 0cb4edee6af5..78bf6c7e80c8 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -60,7 +60,9 @@ static inline int should_drop_frame(struct sk_buff *skb, struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb); struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; - if (status->flag & (RX_FLAG_FAILED_FCS_CRC | RX_FLAG_FAILED_PLCP_CRC)) + if (status->flag & (RX_FLAG_FAILED_FCS_CRC | + RX_FLAG_FAILED_PLCP_CRC | + RX_FLAG_AMPDU_IS_ZEROLEN)) return 1; if (unlikely(skb->len < 16 + present_fcs_len)) return 1; @@ -91,6 +93,13 @@ ieee80211_rx_radiotap_len(struct ieee80211_local *local, if (status->flag & RX_FLAG_HT) /* HT info */ len += 3; + if (status->flag & RX_FLAG_AMPDU_DETAILS) { + /* padding */ + while (len & 3) + len++; + len += 8; + } + return len; } @@ -215,6 +224,37 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local, pos++; *pos++ = status->rate_idx; } + + if (status->flag & RX_FLAG_AMPDU_DETAILS) { + u16 flags = 0; + + /* ensure 4 byte alignment */ + while ((pos - (u8 *)rthdr) & 3) + pos++; + rthdr->it_present |= + cpu_to_le32(1 << IEEE80211_RADIOTAP_AMPDU_STATUS); + put_unaligned_le32(status->ampdu_reference, pos); + pos += 4; + if (status->flag & RX_FLAG_AMPDU_REPORT_ZEROLEN) + flags |= IEEE80211_RADIOTAP_AMPDU_REPORT_ZEROLEN; + if (status->flag & RX_FLAG_AMPDU_IS_ZEROLEN) + flags |= IEEE80211_RADIOTAP_AMPDU_IS_ZEROLEN; + if (status->flag & RX_FLAG_AMPDU_LAST_KNOWN) + flags |= IEEE80211_RADIOTAP_AMPDU_LAST_KNOWN; + if (status->flag & RX_FLAG_AMPDU_IS_LAST) + flags |= IEEE80211_RADIOTAP_AMPDU_IS_LAST; + if (status->flag & RX_FLAG_AMPDU_DELIM_CRC_ERROR) + flags |= IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_ERR; + if (status->flag & RX_FLAG_AMPDU_DELIM_CRC_KNOWN) + flags |= IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_KNOWN; + put_unaligned_le16(flags, pos); + pos += 2; + if (status->flag & RX_FLAG_AMPDU_DELIM_CRC_KNOWN) + *pos++ = status->ampdu_delimiter_crc; + else + *pos++ = 0; + *pos++ = 0; + } } /* |