Return-path: Received: from cora.hrz.tu-chemnitz.de ([134.109.228.40]:35074 "EHLO cora.hrz.tu-chemnitz.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752648Ab3F0Q7P (ORCPT ); Thu, 27 Jun 2013 12:59:15 -0400 From: Simon Wunderlich To: Johannes Berg Cc: linux-wireless@vger.kernel.org, Mathias Kretschmer , Simon Wunderlich Subject: [PATCHv5 07/18] mac80211: add radiotap flag and handling for 5/10 MHz Date: Thu, 27 Jun 2013 18:58:49 +0200 Message-Id: <1372352340-20663-9-git-send-email-siwu@hrz.tu-chemnitz.de> (sfid-20130627_192030_004890_E840EB59) In-Reply-To: <1372352340-20663-1-git-send-email-siwu@hrz.tu-chemnitz.de> References: <1372352340-20663-1-git-send-email-siwu@hrz.tu-chemnitz.de> Sender: linux-wireless-owner@vger.kernel.org List-ID: Wireshark already defines radiotap channel flags for 5 and 10 MHz, so just use them in Linux radiotap too. Furthermore, add rx status flags to allow drivers to report when they received data on 5 or 10 MHz channels. Signed-off-by: Simon Wunderlich Signed-off-by: Mathias Kretschmer --- include/net/ieee80211_radiotap.h | 4 ++++ include/net/mac80211.h | 4 ++++ net/mac80211/rx.c | 21 ++++++++++++--------- 3 files changed, 20 insertions(+), 9 deletions(-) diff --git a/include/net/ieee80211_radiotap.h b/include/net/ieee80211_radiotap.h index c6d07cb..8b5b714 100644 --- a/include/net/ieee80211_radiotap.h +++ b/include/net/ieee80211_radiotap.h @@ -230,6 +230,10 @@ enum ieee80211_radiotap_type { #define IEEE80211_CHAN_PASSIVE 0x0200 /* Only passive scan allowed */ #define IEEE80211_CHAN_DYN 0x0400 /* Dynamic CCK-OFDM channel */ #define IEEE80211_CHAN_GFSK 0x0800 /* GFSK channel (FHSS PHY) */ +#define IEEE80211_CHAN_GSM 0x1000 /* GSM (900 MHz) */ +#define IEEE80211_CHAN_STURBO 0x2000 /* Static Turbo */ +#define IEEE80211_CHAN_HALF 0x4000 /* Half channel (10 MHz wide) */ +#define IEEE80211_CHAN_QUARTER 0x8000 /* Quarter channel (5 MHz wide) */ /* For IEEE80211_RADIOTAP_FLAGS */ #define IEEE80211_RADIOTAP_F_CFP 0x01 /* sent/received diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 9445f38..ed3dd96 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -809,6 +809,8 @@ 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_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 */ enum mac80211_rx_flags { RX_FLAG_MMIC_ERROR = BIT(0), @@ -837,6 +839,8 @@ enum mac80211_rx_flags { RX_FLAG_80P80MHZ = BIT(24), RX_FLAG_160MHZ = BIT(25), RX_FLAG_STBC_MASK = BIT(26) | BIT(27), + RX_FLAG_10MHZ = BIT(28), + RX_FLAG_5MHZ = BIT(29), }; #define RX_FLAG_STBC_SHIFT 26 diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 90ab888..e62aca1 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -146,6 +146,7 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local, struct ieee80211_radiotap_header *rthdr; unsigned char *pos; u16 rx_flags = 0; + u16 channel_flags = 0; int mpdulen; mpdulen = skb->len; @@ -220,20 +221,22 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local, /* IEEE80211_RADIOTAP_CHANNEL */ put_unaligned_le16(status->freq, pos); pos += 2; + if (status->flag & RX_FLAG_10MHZ) + channel_flags |= IEEE80211_CHAN_HALF; + else if (status->flag & RX_FLAG_5MHZ) + channel_flags |= IEEE80211_CHAN_QUARTER; + if (status->band == IEEE80211_BAND_5GHZ) - put_unaligned_le16(IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ, - pos); + channel_flags |= IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ; else if (status->flag & (RX_FLAG_HT | RX_FLAG_VHT)) - put_unaligned_le16(IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ, - pos); + channel_flags |= IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; else if (rate && rate->flags & IEEE80211_RATE_ERP_G) - put_unaligned_le16(IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ, - pos); + channel_flags |= IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ; else if (rate) - put_unaligned_le16(IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ, - pos); + channel_flags |= IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ; else - put_unaligned_le16(IEEE80211_CHAN_2GHZ, pos); + channel_flags |= IEEE80211_CHAN_2GHZ; + put_unaligned_le16(channel_flags, pos); pos += 2; /* IEEE80211_RADIOTAP_DBM_ANTSIGNAL */ -- 1.7.10.4