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mac80211: separate encoding/bandwidth from flags

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We currently use a lot of flags that are mutually incompatible,
separate this out into actual encoding and bandwidth enum values.

Much of this again done with spatch, with manual post-editing,
mostly to add the switch statements and get rid of the conversions.

@@
expression status;
@@
-status->enc_flags |= RX_ENC_FLAG_80MHZ
+status->bw = RATE_INFO_BW_80
@@
expression status;
@@
-status->enc_flags |= RX_ENC_FLAG_40MHZ
+status->bw = RATE_INFO_BW_40
@@
expression status;
@@
-status->enc_flags |= RX_ENC_FLAG_20MHZ
+status->bw = RATE_INFO_BW_20
@@
expression status;
@@
-status->enc_flags |= RX_ENC_FLAG_160MHZ
+status->bw = RATE_INFO_BW_160
@@
expression status;
@@
-status->enc_flags |= RX_ENC_FLAG_5MHZ
+status->bw = RATE_INFO_BW_5
@@
expression status;
@@
-status->enc_flags |= RX_ENC_FLAG_10MHZ
+status->bw = RATE_INFO_BW_10

@@
expression status;
@@
-status->enc_flags |= RX_ENC_FLAG_VHT
+status->encoding = RX_ENC_VHT
@@
expression status;
@@
-status->enc_flags |= RX_ENC_FLAG_HT
+status->encoding = RX_ENC_HT
@@
expression status;
@@
-status.enc_flags |= RX_ENC_FLAG_VHT
+status.encoding = RX_ENC_VHT
@@
expression status;
@@
-status.enc_flags |= RX_ENC_FLAG_HT
+status.encoding = RX_ENC_HT

@@
expression status;
@@
-(status->enc_flags & RX_ENC_FLAG_HT)
+(status->encoding == RX_ENC_HT)
@@
expression status;
@@
-(status->enc_flags & RX_ENC_FLAG_VHT)
+(status->encoding == RX_ENC_VHT)

@@
expression status;
@@
-(status->enc_flags & RX_ENC_FLAG_5MHZ)
+(status->bw == RATE_INFO_BW_5)
@@
expression status;
@@
-(status->enc_flags & RX_ENC_FLAG_10MHZ)
+(status->bw == RATE_INFO_BW_10)
@@
expression status;
@@
-(status->enc_flags & RX_ENC_FLAG_40MHZ)
+(status->bw == RATE_INFO_BW_40)
@@
expression status;
@@
-(status->enc_flags & RX_ENC_FLAG_80MHZ)
+(status->bw == RATE_INFO_BW_80)
@@
expression status;
@@
-(status->enc_flags & RX_ENC_FLAG_160MHZ)
+(status->bw == RATE_INFO_BW_160)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2017-04-26 12:14:59 +02:00
parent 7fdd69c5af
commit da6a4352e7
40 changed files with 182 additions and 171 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
net/mac80211/rx.c
View File

@@ -156,7 +156,7 @@ ieee80211_rx_radiotap_hdrlen(struct ieee80211_local *local,
/* padding for RX_FLAGS if necessary */
len = ALIGN(len, 2);
if (status->enc_flags & RX_ENC_FLAG_HT) /* HT info */
if (status->encoding == RX_ENC_HT) /* HT info */
len += 3;
if (status->flag & RX_FLAG_AMPDU_DETAILS) {
@@ -164,7 +164,7 @@ ieee80211_rx_radiotap_hdrlen(struct ieee80211_local *local,
len += 8;
}
if (status->enc_flags & RX_ENC_FLAG_VHT) {
if (status->encoding == RX_ENC_VHT) {
len = ALIGN(len, 2);
len += 12;
}
@@ -334,7 +334,7 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
pos++;
/* IEEE80211_RADIOTAP_RATE */
if (!rate || status->enc_flags & (RX_ENC_FLAG_HT | RX_ENC_FLAG_VHT)) {
if (!rate || status->encoding != RX_ENC_LEGACY) {
/*
* Without rate information don't add it. If we have,
* MCS information is a separate field in radiotap,
@@ -345,9 +345,9 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
} else {
int shift = 0;
rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_RATE);
if (status->enc_flags & RX_ENC_FLAG_10MHZ)
if (status->bw == RATE_INFO_BW_10)
shift = 1;
else if (status->enc_flags & RX_ENC_FLAG_5MHZ)
else if (status->bw == RATE_INFO_BW_5)
shift = 2;
*pos = DIV_ROUND_UP(rate->bitrate, 5 * (1 << shift));
}
@@ -356,14 +356,14 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
/* IEEE80211_RADIOTAP_CHANNEL */
put_unaligned_le16(status->freq, pos);
pos += 2;
if (status->enc_flags & RX_ENC_FLAG_10MHZ)
if (status->bw == RATE_INFO_BW_10)
channel_flags |= IEEE80211_CHAN_HALF;
else if (status->enc_flags & RX_ENC_FLAG_5MHZ)
else if (status->bw == RATE_INFO_BW_5)
channel_flags |= IEEE80211_CHAN_QUARTER;
if (status->band == NL80211_BAND_5GHZ)
channel_flags |= IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ;
else if (status->enc_flags & (RX_ENC_FLAG_HT | RX_ENC_FLAG_VHT))
else if (status->encoding != RX_ENC_LEGACY)
channel_flags |= IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ;
else if (rate && rate->flags & IEEE80211_RATE_ERP_G)
channel_flags |= IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ;
@@ -402,7 +402,7 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
put_unaligned_le16(rx_flags, pos);
pos += 2;
if (status->enc_flags & RX_ENC_FLAG_HT) {
if (status->encoding == RX_ENC_HT) {
unsigned int stbc;
rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_MCS);
@@ -410,7 +410,7 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
*pos = 0;
if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
*pos |= IEEE80211_RADIOTAP_MCS_SGI;
if (status->enc_flags & RX_ENC_FLAG_40MHZ)
if (status->bw == RATE_INFO_BW_40)
*pos |= IEEE80211_RADIOTAP_MCS_BW_40;
if (status->enc_flags & RX_ENC_FLAG_HT_GF)
*pos |= IEEE80211_RADIOTAP_MCS_FMT_GF;
@@ -449,7 +449,7 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
*pos++ = 0;
}
if (status->enc_flags & RX_ENC_FLAG_VHT) {
if (status->encoding == RX_ENC_VHT) {
u16 known = local->hw.radiotap_vht_details;
rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_VHT);
@@ -465,14 +465,19 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
*pos |= IEEE80211_RADIOTAP_VHT_FLAG_BEAMFORMED;
pos++;
/* bandwidth */
if (status->enc_flags & RX_ENC_FLAG_80MHZ)
switch (status->bw) {
case RATE_INFO_BW_80:
*pos++ = 4;
else if (status->enc_flags & RX_ENC_FLAG_160MHZ)
break;
case RATE_INFO_BW_160:
*pos++ = 11;
else if (status->enc_flags & RX_ENC_FLAG_40MHZ)
break;
case RATE_INFO_BW_40:
*pos++ = 1;
else /* 20 MHz */
break;
default:
*pos++ = 0;
}
/* MCS/NSS */
*pos = (status->rate_idx << 4) | status->vht_nss;
pos += 4;
@@ -3336,8 +3341,8 @@ static void ieee80211_rx_handlers_result(struct ieee80211_rx_data *rx,
status = IEEE80211_SKB_RXCB((rx->skb));
sband = rx->local->hw.wiphy->bands[status->band];
if (!(status->enc_flags & RX_ENC_FLAG_HT) &&
!(status->enc_flags & RX_ENC_FLAG_VHT))
if (!(status->encoding == RX_ENC_HT) &&
!(status->encoding == RX_ENC_VHT))
rate = &sband->bitrates[status->rate_idx];
ieee80211_rx_cooked_monitor(rx, rate);
@@ -3598,7 +3603,7 @@ static bool ieee80211_accept_frame(struct ieee80211_rx_data *rx)
return false;
if (!rx->sta) {
int rate_idx;
if (status->enc_flags & (RX_ENC_FLAG_HT | RX_ENC_FLAG_VHT))
if (status->encoding != RX_ENC_LEGACY)
rate_idx = 0; /* TODO: HT/VHT rates */
else
rate_idx = status->rate_idx;
@@ -3618,7 +3623,7 @@ static bool ieee80211_accept_frame(struct ieee80211_rx_data *rx)
return false;
if (!rx->sta) {
int rate_idx;
if (status->enc_flags & RX_ENC_FLAG_HT)
if (status->encoding != RX_ENC_LEGACY)
rate_idx = 0; /* TODO: HT rates */
else
rate_idx = status->rate_idx;
@@ -4281,7 +4286,8 @@ void ieee80211_rx_napi(struct ieee80211_hw *hw, struct ieee80211_sta *pubsta,
* we probably can't have a valid rate here anyway.
*/
if (status->enc_flags & RX_ENC_FLAG_HT) {
switch (status->encoding) {
case RX_ENC_HT:
/*
* rate_idx is MCS index, which can be [0-76]
* as documented on:
@@ -4299,14 +4305,19 @@ void ieee80211_rx_napi(struct ieee80211_hw *hw, struct ieee80211_sta *pubsta,
status->rate_idx,
status->rate_idx))
goto drop;
} else if (status->enc_flags & RX_ENC_FLAG_VHT) {
break;
case RX_ENC_VHT:
if (WARN_ONCE(status->rate_idx > 9 ||
!status->vht_nss ||
status->vht_nss > 8,
"Rate marked as a VHT rate but data is invalid: MCS: %d, NSS: %d\n",
status->rate_idx, status->vht_nss))
goto drop;
} else {
break;
default:
WARN_ON_ONCE(1);
/* fall through */
case RX_ENC_LEGACY:
if (WARN_ON(status->rate_idx >= sband->n_bitrates))
goto drop;
rate = &sband->bitrates[status->rate_idx];