From: greearb@candelatech.com
To: linux-wireless@vger.kernel.org
Cc: johannes@sipsolutions.net, Ben Greear <greearb@candelatech.com>
Subject: [PATCH] mac80211: add vht cap decode to debugfs.
Date: Mon, 2 May 2016 14:19:16 -0700 [thread overview]
Message-ID: <1462223956-23384-1-git-send-email-greearb@candelatech.com> (raw)
From: Ben Greear <greearb@candelatech.com>
This makes it a lot easier to understand the capabilities used
by the station:
VHT supported
cap: 0x300819b2
MAX-MPDU-11454
RXLDPC
SHORT-GI-80
TXSTBC
RXSTBC_1
RXSTBC_3
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
RX-ANTENNA-PATTERN
RX MCS: fffe
TX MCS: fffe
Signed-off-by: Ben Greear <greearb@candelatech.com>
---
net/mac80211/debugfs_sta.c | 50 ++++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 48 insertions(+), 2 deletions(-)
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 5d3d2ab..ff9d4dd 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -292,14 +292,60 @@ 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)
+
+ PFLAG(MAX_MPDU_LENGTH_3895, "MAX-MPDU-3895");
+ PFLAG(MAX_MPDU_LENGTH_7991, "MAX-MPDU-7991");
+ PFLAG(MAX_MPDU_LENGTH_11454, "MAX-MPDU-11454");
+ PFLAG(SUPP_CHAN_WIDTH_160MHZ, "160Mhz");
+ PFLAG(SUPP_CHAN_WIDTH_160_80PLUS80MHZ, "160-80+80Mhz");
+ PFLAG(RXLDPC, "RXLDPC");
+ PFLAG(SHORT_GI_80, "SHORT-GI-80");
+ PFLAG(SHORT_GI_160, "SHORT-GI-160");
+ PFLAG(TXSTBC, "TXSTBC");
+ PFLAG(RXSTBC_1, "RXSTBC_1");
+ PFLAG(RXSTBC_2, "RXSTBC_2");
+ PFLAG(RXSTBC_3, "RXSTBC_3");
+ PFLAG(RXSTBC_4, "RXSTBC_4");
+ 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, "RX-ANTENNA-PATTERN");
p += scnprintf(p, sizeof(buf)+buf-p, "RX MCS: %.4x\n",
le16_to_cpu(vhtc->vht_mcs.rx_mcs_map));
--
2.4.3
next reply other threads:[~2016-05-02 21:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-02 21:19 greearb [this message]
2016-05-02 21:23 ` [PATCH] mac80211: add vht cap decode to debugfs Johannes Berg
2016-05-02 21:27 ` Ben Greear
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