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authorBen Greear <greearb@candelatech.com>2016-05-13 11:29:33 -0700
committerJohannes Berg <johannes.berg@intel.com>2016-05-31 13:07:54 +0200
commit0bb7ed426373cebf406ff3ae7b6d2344f2f4364c (patch)
treecf1ed8f2617df4893a3a68d61b3135891b0a3b05 /net/mac80211
parent100cb9ff40e0c9eba1d88e3c9c21e9670faeb896 (diff)
mac80211: add vht cap decode to debugfs
This makes it a lot easier to understand the capabilities used by the station: VHT supported cap: 0x300819b2 MAX-MPDU-11454 80Mhz RXLDPC SHORT-GI-80 TXSTBC RXSTBC_1 SU-BEAMFORMER-CAPABLE SU-BEAMFORMEE-CAPABLE BEAMFORMEE-STS: 0x0 SOUNDING-DIMENSIONS: 0x0 MU-BEAMFORMER-CAPABLE MPDU-LENGTH-EXPONENT: 0x0 LINK-ADAPTATION-VHT-MRQ-MFB: 0x0 RX-ANTENNA-PATTERN TX-ANTENNA-PATTERN RX MCS: fffe TX MCS: fffe Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/debugfs_sta.c78
1 files changed, 76 insertions, 2 deletions
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 33dfcbc2bf9c..fd334133ff45 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -328,14 +328,88 @@ STA_OPS(ht_capa);
static ssize_t sta_vht_capa_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
- char buf[128], *p = buf;
+ char buf[512], *p = buf;
struct sta_info *sta = file->private_data;
struct ieee80211_sta_vht_cap *vhtc = &sta->sta.vht_cap;
p += scnprintf(p, sizeof(buf) + buf - p, "VHT %ssupported\n",
vhtc->vht_supported ? "" : "not ");
if (vhtc->vht_supported) {
- p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.8x\n", vhtc->cap);
+ p += scnprintf(p, sizeof(buf) + buf - p, "cap: %#.8x\n",
+ vhtc->cap);
+#define PFLAG(a, b) \
+ do { \
+ if (vhtc->cap & IEEE80211_VHT_CAP_ ## a) \
+ p += scnprintf(p, sizeof(buf) + buf - p, \
+ "\t\t%s\n", b); \
+ } while (0)
+
+ switch (vhtc->cap & 0x3) {
+ case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
+ p += scnprintf(p, sizeof(buf) + buf - p,
+ "\t\tMAX-MPDU-3895\n");
+ break;
+ case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
+ p += scnprintf(p, sizeof(buf) + buf - p,
+ "\t\tMAX-MPDU-7991\n");
+ break;
+ case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
+ p += scnprintf(p, sizeof(buf) + buf - p,
+ "\t\tMAX-MPDU-11454\n");
+ break;
+ default:
+ p += scnprintf(p, sizeof(buf) + buf - p,
+ "\t\tMAX-MPDU-UNKNOWN\n");
+ };
+ switch (vhtc->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
+ case 0:
+ p += scnprintf(p, sizeof(buf) + buf - p,
+ "\t\t80Mhz\n");
+ break;
+ case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
+ p += scnprintf(p, sizeof(buf) + buf - p,
+ "\t\t160Mhz\n");
+ break;
+ case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
+ p += scnprintf(p, sizeof(buf) + buf - p,
+ "\t\t80+80Mhz\n");
+ break;
+ default:
+ p += scnprintf(p, sizeof(buf) + buf - p,
+ "\t\tUNKNOWN-MHZ: 0x%x\n",
+ (vhtc->cap >> 2) & 0x3);
+ };
+ PFLAG(RXLDPC, "RXLDPC");
+ PFLAG(SHORT_GI_80, "SHORT-GI-80");
+ PFLAG(SHORT_GI_160, "SHORT-GI-160");
+ PFLAG(TXSTBC, "TXSTBC");
+ p += scnprintf(p, sizeof(buf) + buf - p,
+ "\t\tRXSTBC_%d\n", (vhtc->cap >> 8) & 0x7);
+ PFLAG(SU_BEAMFORMER_CAPABLE, "SU-BEAMFORMER-CAPABLE");
+ PFLAG(SU_BEAMFORMEE_CAPABLE, "SU-BEAMFORMEE-CAPABLE");
+ p += scnprintf(p, sizeof(buf) + buf - p,
+ "\t\tBEAMFORMEE-STS: 0x%x\n",
+ (vhtc->cap & IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK) >>
+ IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
+ p += scnprintf(p, sizeof(buf) + buf - p,
+ "\t\tSOUNDING-DIMENSIONS: 0x%x\n",
+ (vhtc->cap & IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK)
+ >> IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT);
+ PFLAG(MU_BEAMFORMER_CAPABLE, "MU-BEAMFORMER-CAPABLE");
+ PFLAG(MU_BEAMFORMEE_CAPABLE, "MU-BEAMFORMEE-CAPABLE");
+ PFLAG(VHT_TXOP_PS, "TXOP-PS");
+ PFLAG(HTC_VHT, "HTC-VHT");
+ p += scnprintf(p, sizeof(buf) + buf - p,
+ "\t\tMPDU-LENGTH-EXPONENT: 0x%x\n",
+ (vhtc->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >>
+ IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
+ PFLAG(VHT_LINK_ADAPTATION_VHT_UNSOL_MFB,
+ "LINK-ADAPTATION-VHT-UNSOL-MFB");
+ p += scnprintf(p, sizeof(buf) + buf - p,
+ "\t\tLINK-ADAPTATION-VHT-MRQ-MFB: 0x%x\n",
+ (vhtc->cap & IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB) >> 26);
+ PFLAG(RX_ANTENNA_PATTERN, "RX-ANTENNA-PATTERN");
+ PFLAG(TX_ANTENNA_PATTERN, "TX-ANTENNA-PATTERN");
p += scnprintf(p, sizeof(buf)+buf-p, "RX MCS: %.4x\n",
le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));