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iwlwifi: mvm: decode HE TB PPDU data

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Decode the HE TB PPDU data that we get in sniffer mode
and use it to populate the HE radiotap information.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Johannes Berg 2018-05-09 11:53:04 +02:00 committed by Luca Coelho
parent 423584dd80
commit 764f9de502
2 changed files with 34 additions and 25 deletions
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21
drivers/net/wireless/intel/iwlwifi/fw/api/rx.h
View File

@ -362,22 +362,27 @@ enum iwl_rx_he_phy {
/* 6 bits reserved */
IWL_RX_HE_PHY_DELIM_EOF = BIT(31),
/* second dword - MU data */
IWL_RX_HE_PHY_SIGB_COMPRESSION = BIT_ULL(32 + 0),
IWL_RX_HE_PHY_SIBG_SYM_OR_USER_NUM_MASK = 0x1e00000000ULL,
/* second dword - common data */
IWL_RX_HE_PHY_HE_LTF_NUM_MASK = 0xe000000000ULL,
IWL_RX_HE_PHY_RU_ALLOC_SEC80 = BIT_ULL(32 + 8),
/* trigger encoded */
IWL_RX_HE_PHY_RU_ALLOC_MASK = 0xfe0000000000ULL,
IWL_RX_HE_PHY_SIGB_MCS_MASK = 0xf000000000000ULL,
/* 1 bit reserved */
IWL_RX_HE_PHY_SIGB_DCM = BIT_ULL(32 + 21),
IWL_RX_HE_PHY_PREAMBLE_PUNC_TYPE_MASK = 0xc0000000000000ULL,
/* 4 bits reserved */
IWL_RX_HE_PHY_INFO_TYPE_MASK = 0xf000000000000000ULL,
IWL_RX_HE_PHY_INFO_TYPE_SU = 0x0,
IWL_RX_HE_PHY_INFO_TYPE_MU = 0x1,
IWL_RX_HE_PHY_INFO_TYPE_MU_EXT_INFO = 0x2,
IWL_RX_HE_PHY_INFO_TYPE_TB_EXT_INFO = 0x3,
/* second dword - MU data */
IWL_RX_HE_PHY_MU_SIGB_COMPRESSION = BIT_ULL(32 + 0),
IWL_RX_HE_PHY_MU_SIBG_SYM_OR_USER_NUM_MASK = 0x1e00000000ULL,
IWL_RX_HE_PHY_MU_SIGB_MCS_MASK = 0xf000000000000ULL,
IWL_RX_HE_PHY_MU_SIGB_DCM = BIT_ULL(32 + 21),
IWL_RX_HE_PHY_MU_PREAMBLE_PUNC_TYPE_MASK = 0xc0000000000000ULL,
/* second dword - TB data */
IWL_RX_HE_PHY_TB_PILOT_TYPE = BIT_ULL(32 + 0),
IWL_RX_HE_PHY_TB_LOW_SS_MASK = 0xe00000000ULL
};
enum iwl_rx_he_sigb_common0 {

38
drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
View File

@ -988,23 +988,23 @@ static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
}
} else if (overload && he_mu && he_phy_data != HE_PHY_DATA_INVAL) {
he_mu->flags1 |=
le16_encode_bits(FIELD_GET(IWL_RX_HE_PHY_SIBG_SYM_OR_USER_NUM_MASK,
he_phy_data),
le16_encode_bits(FIELD_GET(IWL_RX_HE_PHY_MU_SIBG_SYM_OR_USER_NUM_MASK,
he_phy_data),
IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
he_mu->flags1 |=
le16_encode_bits(FIELD_GET(IWL_RX_HE_PHY_SIGB_DCM,
he_phy_data),
le16_encode_bits(FIELD_GET(IWL_RX_HE_PHY_MU_SIGB_DCM,
he_phy_data),
IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
he_mu->flags1 |=
le16_encode_bits(FIELD_GET(IWL_RX_HE_PHY_SIGB_MCS_MASK,
he_phy_data),
le16_encode_bits(FIELD_GET(IWL_RX_HE_PHY_MU_SIGB_MCS_MASK,
he_phy_data),
IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
he_mu->flags2 |=
le16_encode_bits(FIELD_GET(IWL_RX_HE_PHY_SIGB_COMPRESSION,
he_phy_data),
le16_encode_bits(FIELD_GET(IWL_RX_HE_PHY_MU_SIGB_COMPRESSION,
he_phy_data),
IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
he_mu->flags2 |=
le16_encode_bits(FIELD_GET(IWL_RX_HE_PHY_PREAMBLE_PUNC_TYPE_MASK,
le16_encode_bits(FIELD_GET(IWL_RX_HE_PHY_MU_PREAMBLE_PUNC_TYPE_MASK,
he_phy_data),
IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
@ -1049,15 +1049,18 @@ static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
}
if (he_mu) {
if (he_phy_data != HE_PHY_DATA_INVAL &&
(FIELD_GET(IWL_RX_HE_PHY_INFO_TYPE_MASK, he_phy_data) ==
IWL_RX_HE_PHY_INFO_TYPE_MU_EXT_INFO ||
FIELD_GET(IWL_RX_HE_PHY_INFO_TYPE_MASK, he_phy_data) ==
IWL_RX_HE_PHY_INFO_TYPE_TB_EXT_INFO)) {
/*
* Unfortunately, we have to leave the mac80211 data
* incorrect for the case that we receive an HE-MU
* transmission and *don't* have the he_mu pointer,
* i.e. we don't have the phy data (due to the bits
* being used for TSF). This shouldn't happen though
* as management frames where we need the TSF/timers
* are not be transmitted in HE-MU, I think.
* transmission and *don't* have the HE phy data (due
* to the bits being used for TSF). This shouldn't
* happen though as management frames where we need
* the TSF/timers are not be transmitted in HE-MU.
*/
u8 ru = FIELD_GET(IWL_RX_HE_PHY_RU_ALLOC_MASK, he_phy_data);
u8 offs = 0;
@ -1100,10 +1103,11 @@ static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
he->data2 |=
cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN);
if (he_phy_data & IWL_RX_HE_PHY_RU_ALLOC_SEC80) {
if (he_phy_data & IWL_RX_HE_PHY_RU_ALLOC_SEC80)
he->data2 |=
cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);
if (he_mu) {
#define CHECK_BW(bw) \
BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \
RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS)
@ -1111,7 +1115,7 @@ static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
CHECK_BW(40);
CHECK_BW(80);
CHECK_BW(160);
he_mu->flags2 |=
he->data2 |=
le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
rate_n_flags),
IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW);