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From:   John Crispin <john@phrozen.org>
To:     Johannes Berg <johannes@sipsolutions.net>
Cc:     linux-wireless@vger.kernel.org, John Crispin <john@phrozen.org>,
        Shashidhar Lakkavalli <slakkavalli@datto.com>
Subject: [PATCH] iw: print HE capabilities
Date:   Mon, 20 May 2019 12:54:16 +0200
Message-Id: <20190520105416.27185-1-john@phrozen.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-wireless-owner@vger.kernel.org
Precedence: bulk

Print the HE MAC/PHY capabilities and MCS/NSS sets.

Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
---
 info.c |   6 ++
 iw.h   |   1 +
 util.c | 231 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 238 insertions(+)

diff --git a/info.c b/info.c
index 92c7d1d..e6270c8 100644
--- a/info.c
+++ b/info.c
@@ -162,7 +162,13 @@ static int print_phy_handler(struct nl_msg *msg, void *arg)
 			    tb_band[NL80211_BAND_ATTR_VHT_MCS_SET])
 				print_vht_info(nla_get_u32(tb_band[NL80211_BAND_ATTR_VHT_CAPA]),
 					       nla_data(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]));
+			if (tb_band[NL80211_BAND_ATTR_IFTYPE_DATA]) {
+				struct nlattr *nl_iftype;
+				int rem_band;
 
+				nla_for_each_nested(nl_iftype, tb_band[NL80211_BAND_ATTR_IFTYPE_DATA], rem_band)
+					print_he_info(nl_iftype);
+			}
 			if (tb_band[NL80211_BAND_ATTR_FREQS]) {
 				if (!band_had_freq) {
 					printf("\t\tFrequencies:\n");
diff --git a/iw.h b/iw.h
index ca8a0ff..bc0b3ac 100644
--- a/iw.h
+++ b/iw.h
@@ -197,6 +197,7 @@ void print_ampdu_length(__u8 exponent);
 void print_ampdu_spacing(__u8 spacing);
 void print_ht_capability(__u16 cap);
 void print_vht_info(__u32 capa, const __u8 *mcs);
+void print_he_info(struct nlattr *nl_iftype);
 
 char *channel_width_name(enum nl80211_chan_width width);
 const char *iftype_name(enum nl80211_iftype iftype);
diff --git a/util.c b/util.c
index 2fa0b74..1b5aae1 100644
--- a/util.c
+++ b/util.c
@@ -1101,6 +1101,237 @@ void print_vht_info(__u32 capa, const __u8 *mcs)
 	printf("\t\tVHT TX highest supported: %d Mbps\n", tmp & 0x1fff);
 }
 
+void print_he_info(struct nlattr *nl_iftype)
+{
+	struct nlattr *tb[NL80211_BAND_IFTYPE_ATTR_MAX + 1];
+	struct nlattr *tb_flags[NL80211_IFTYPE_MAX + 1];
+	char *iftypes[NUM_NL80211_IFTYPES] = {
+		"Unspec", "Adhoc", "Station", "AP", "AP/VLAN", "WDS", "Monitor"
+		"Mesh", "P2P/Client", "P2P/Go", "P2P/Device", "OCB", "NAN",
+	};
+	__u16 mac_cap[3] = { 0 };
+	__u16 phy_cap[6] = { 0 };
+	__u16 mcs_set[6] = { 0 };
+	__u8 ppet[25] = { 0 };
+	size_t len;
+	int i;
+
+	#define PRINT_HE_CAP(_var, _idx, _bit, _str) \
+	do { \
+		if (_var[_idx] & BIT(_bit)) \
+			printf("\t\t\t\t" _str "\n"); \
+	} while (0)
+
+	#define PRINT_HE_CAP_MASK(_var, _idx, _shift, _mask, _str) \
+	do { \
+		if ((_var[_idx] >> _shift) & _mask) \
+			printf("\t\t\t\t" _str ": %d\n", (_var[_idx] >> _shift) & _mask); \
+	} while (0)
+
+	#define PRINT_HE_MAC_CAP(...) PRINT_HE_CAP(mac_cap, __VA_ARGS__)
+	#define PRINT_HE_MAC_CAP_MASK(...) PRINT_HE_CAP_MASK(mac_cap, __VA_ARGS__)
+	#define PRINT_HE_PHY_CAP(...) PRINT_HE_CAP(phy_cap, __VA_ARGS__)
+	#define PRINT_HE_PHY_CAP0(_idx, _bit, ...) PRINT_HE_CAP(phy_cap, _idx, _bit + 8, __VA_ARGS__)
+	#define PRINT_HE_PHY_CAP_MASK(...) PRINT_HE_CAP_MASK(phy_cap, __VA_ARGS__)
+
+	nla_parse(tb, NL80211_BAND_IFTYPE_ATTR_MAX,
+		  nla_data(nl_iftype), nla_len(nl_iftype), NULL);
+
+	if (!tb[NL80211_BAND_IFTYPE_ATTR_IFTYPES])
+		return;
+
+	if (nla_parse_nested(tb_flags, NL80211_IFTYPE_MAX,
+			     tb[NL80211_BAND_IFTYPE_ATTR_IFTYPES], NULL))
+		return;
+
+	printf("\t\tHE Iftypes:");
+	for (i = 0; i < NUM_NL80211_IFTYPES; i++)
+		if (nla_get_flag(tb_flags[i]) && iftypes[i])
+			printf(" %s", iftypes[i]);
+	printf("\n");
+
+	if (tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC]) {
+		len = nla_len(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC]);
+		if (len > sizeof(mac_cap))
+			len = sizeof(mac_cap);
+		memcpy(mac_cap,
+		       nla_data(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC]),
+		       len);
+	}
+	printf("\t\t\tHE MAC Capabilities (0x");
+	for (i = 0; i < 3; i++)
+		printf("%04x", mac_cap[i]);
+	printf("):\n");
+
+	PRINT_HE_MAC_CAP(0, 0, "+HTC HE Supported");
+	PRINT_HE_MAC_CAP(0, 1, "TWT Requester");
+	PRINT_HE_MAC_CAP(0, 2, "TWT Responder");
+	PRINT_HE_MAC_CAP_MASK(0, 3, 0x3, "Dynamic BA Fragementation Level");
+	PRINT_HE_MAC_CAP_MASK(0, 5, 0x7, "Maximum number of MSDUS Fragments");
+	PRINT_HE_MAC_CAP_MASK(0, 8, 0x3, "Minimum Payload size of 128 bytes");
+	PRINT_HE_MAC_CAP_MASK(0, 10, 0x3, "Trigger Frame MAC Padding Duration");
+	PRINT_HE_MAC_CAP_MASK(0, 12, 0x7, "Multi-TID Aggregation Support");
+
+	PRINT_HE_MAC_CAP(1, 1, "All Ack");
+	PRINT_HE_MAC_CAP(1, 2, "TRS");
+	PRINT_HE_MAC_CAP(1, 3, "BSR");
+	PRINT_HE_MAC_CAP(1, 4, "Broadcast TWT");
+	PRINT_HE_MAC_CAP(1, 5, "32-bit BA Bitmap");
+	PRINT_HE_MAC_CAP(1, 6, "MU Cascading");
+	PRINT_HE_MAC_CAP(1, 7, "Ack-Enabled Aggregation");
+	PRINT_HE_MAC_CAP(1, 9, "OM Control");
+	PRINT_HE_MAC_CAP(1, 10, "OFDMA RA");
+	PRINT_HE_MAC_CAP_MASK(1, 11, 0x3, "Maximum A-MPDU Length Exponent");
+	PRINT_HE_MAC_CAP(1, 13, "A-MSDU Fragmentation");
+	PRINT_HE_MAC_CAP(1, 14, "Flexible TWT Scheduling");
+	PRINT_HE_MAC_CAP(1, 15, "RX Control Frame to MultiBSS");
+
+	PRINT_HE_MAC_CAP(2, 0, "BSRP BQRP A-MPDU Aggregation");
+	PRINT_HE_MAC_CAP(2, 1, "QTP");
+	PRINT_HE_MAC_CAP(2, 2, "BQR");
+	PRINT_HE_MAC_CAP(2, 3, "SRP Responder Role");
+	PRINT_HE_MAC_CAP(2, 4, "NDP Feedback Report");
+	PRINT_HE_MAC_CAP(2, 5, "OPS");
+	PRINT_HE_MAC_CAP(2, 6, "A-MSDU in A-MPDU");
+	PRINT_HE_MAC_CAP_MASK(2, 7, 7, "Multi-TID Aggregation TX");
+	PRINT_HE_MAC_CAP(2, 10, "HE Subchannel Selective Transmission");
+	PRINT_HE_MAC_CAP(2, 11, "UL 2x996-Tone RU");
+	PRINT_HE_MAC_CAP(2, 12, "OM Control UL MU Data Disable RX");
+
+	if (tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY]) {
+		len = nla_len(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY]);
+
+		if (len > sizeof(phy_cap) - 1)
+			len = sizeof(phy_cap) - 1;
+		memcpy(&((__u8 *)phy_cap)[1],
+		       nla_data(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY]),
+		       len);
+	}
+	printf("\t\t\tHE PHY Capabilities: (0x");
+	for (i = 0; i < 11; i++)
+		printf("%02x", ((__u8 *)phy_cap)[i + 1]);
+	printf("):\n");
+
+	PRINT_HE_PHY_CAP0(0, 1, "HE40/2.4GHz");
+	PRINT_HE_PHY_CAP0(0, 2, "HE40/HE80/5GHz");
+	PRINT_HE_PHY_CAP0(0, 3, "HE160/5GHz");
+	PRINT_HE_PHY_CAP0(0, 4, "HE160/HE80+80/5GHz");
+	PRINT_HE_PHY_CAP0(0, 5, "242 tone RUs/2.4GHz");
+	PRINT_HE_PHY_CAP0(0, 6, "242 tone RUs/5GHz");
+
+	PRINT_HE_PHY_CAP_MASK(1, 0, 0xf, "Punctured Preamble RX");
+	PRINT_HE_PHY_CAP_MASK(1, 4, 0x1, "Device Class");
+	PRINT_HE_PHY_CAP(1, 5, "LDPC Coding in Payload");
+	PRINT_HE_PHY_CAP(1, 6, "HE SU PPDU with 1x HE-LTF and 0.8us GI");
+	PRINT_HE_PHY_CAP_MASK(1, 7, 0x3, "Midamble Rx Max NSTS");
+	PRINT_HE_PHY_CAP(1, 9, "NDP with 4x HE-LTF and 3.2us GI");
+	PRINT_HE_PHY_CAP(1, 10, "STBC Tx <= 80MHz");
+	PRINT_HE_PHY_CAP(1, 11, "STBC Rx <= 80MHz");
+	PRINT_HE_PHY_CAP(1, 12, "Doppler Tx");
+	PRINT_HE_PHY_CAP(1, 13, "Doppler Rx");
+	PRINT_HE_PHY_CAP(1, 14, "Full Bandwidth UL MU-MIMO");
+	PRINT_HE_PHY_CAP(1, 15, "Partial Bandwidth UL MU-MIMO");
+
+	PRINT_HE_PHY_CAP_MASK(2, 0, 0x3, "DCM Max Constellation");
+	PRINT_HE_PHY_CAP_MASK(2, 2, 0x1, "DCM Max NSS Tx");
+	PRINT_HE_PHY_CAP_MASK(2, 3, 0x3, "DCM Max Constellation Rx");
+	PRINT_HE_PHY_CAP_MASK(2, 5, 0x1, "DCM Max NSS Rx");
+	PRINT_HE_PHY_CAP(2, 6, "Rx HE MU PPDU from Non-AP STA");
+	PRINT_HE_PHY_CAP(2, 7, "SU Beamformer");
+	PRINT_HE_PHY_CAP(2, 8, "SU Beamformee");
+	PRINT_HE_PHY_CAP(2, 9, "MU Beamformer");
+	PRINT_HE_PHY_CAP_MASK(2, 10, 0x7, "Beamformee STS <= 80Mhz");
+	PRINT_HE_PHY_CAP_MASK(2, 13, 0x7, "Beamformee STS > 80Mhz");
+
+	PRINT_HE_PHY_CAP_MASK(3, 0, 0x7, "Sounding Dimensions <= 80Mhz");
+	PRINT_HE_PHY_CAP_MASK(3, 3, 0x7, "Sounding Dimensions > 80Mhz");
+	PRINT_HE_PHY_CAP(3, 6, "Ng = 16 SU Feedback");
+	PRINT_HE_PHY_CAP(3, 7, "Ng = 16 MU Feedback");
+	PRINT_HE_PHY_CAP(3, 8, "Codebook Size SU Feedback");
+	PRINT_HE_PHY_CAP(3, 9, "Codebook Size MU Feedback");
+	PRINT_HE_PHY_CAP(3, 10, "Triggered SU Beamforming Feedback");
+	PRINT_HE_PHY_CAP(3, 11, "Triggered MU Beamforming Feedback");
+	PRINT_HE_PHY_CAP(3, 12, "Triggered CQI Feedback");
+	PRINT_HE_PHY_CAP(3, 13, "Partial Bandwidth Extended Range");
+	PRINT_HE_PHY_CAP(3, 14, "Partial Bandwidth DL MU-MIMO");
+	PRINT_HE_PHY_CAP(3, 15, "PPE Threshold Present");
+
+	PRINT_HE_PHY_CAP(4, 0, "SRP-based SR");
+	PRINT_HE_PHY_CAP(4, 1, "Power Boost Factor ar");
+	PRINT_HE_PHY_CAP(4, 2, "HE SU PPDU & HE PPDU 4x HE-LTF 0.8us GI");
+	PRINT_HE_PHY_CAP_MASK(4, 3, 0x7, "Max NC");
+	PRINT_HE_PHY_CAP(4, 6, "STBC Tx > 80MHz");
+	PRINT_HE_PHY_CAP(4, 7, "STBC Rx > 80MHz");
+	PRINT_HE_PHY_CAP(4, 8, "HE ER SU PPDU 4x HE-LTF 0.8us GI");
+	PRINT_HE_PHY_CAP(4, 9, "20MHz in 40MHz HE PPDU 2.4GHz");
+	PRINT_HE_PHY_CAP(4, 10, "20MHz in 160/80+80MHz HE PPDU");
+	PRINT_HE_PHY_CAP(4, 11, "80MHz in 160/80+80MHz HE PPDU");
+	PRINT_HE_PHY_CAP(4, 12, "HE ER SU PPDU 1x HE-LTF 0.8us GI");
+	PRINT_HE_PHY_CAP(4, 13, "Midamble Rx 2x & 1x HE-LTF");
+	PRINT_HE_PHY_CAP_MASK(4, 14, 0x3, "DCM Max BW");
+
+	PRINT_HE_PHY_CAP(5, 0, "Longer Than 16HE SIG-B OFDM Symbols");
+	PRINT_HE_PHY_CAP(5, 1, "Non-Triggered CQI Feedback");
+	PRINT_HE_PHY_CAP(5, 2, "TX 1024-QAM");
+	PRINT_HE_PHY_CAP(5, 3, "RX 1024-QAM");
+	PRINT_HE_PHY_CAP(5, 4, "RX Full BW SU Using HE MU PPDU with Compression SIGB");
+	PRINT_HE_PHY_CAP(5, 5, "RX Full BW SU Using HE MU PPDU with Non-Compression SIGB");
+
+	if (tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET]) {
+		len = nla_len(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET]);
+		if (len > sizeof(mcs_set))
+			len = sizeof(mcs_set);
+		memcpy(mcs_set,
+		       nla_data(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET]),
+		       len);
+	}
+
+	for (i = 0; i < 3; i++) {
+		__u8 phy_cap_support[] = { BIT(1) | BIT(2), BIT(3), BIT(4) };
+		char *bw[] = { "<= 80", "160", "80+80" };
+		int j;
+
+		if ((phy_cap[0] & (phy_cap_support[i] << 8)) == 0)
+			continue;
+
+		for (j = 0; j < 2; j++) {
+			int k;
+			printf("\t\t\tHE %s MCS and NSS set %s MHz\n", j ? "TX" : "RX", bw[i]);
+			for (k = 0; k < 8; k++) {
+				__u16 mcs = mcs_set[(i * 2) + j];
+				mcs >>= k * 2;
+				mcs &= 0x3;
+				printf("\t\t\t\t\t %d streams: ", k + 1);
+				if (mcs == 3)
+					printf("not supported\n");
+				else
+					printf("MCS 0-%d\n", 7 + (mcs * 2));
+			}
+
+		}
+	}
+
+	len = 0;
+	if (tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE]) {
+		len = nla_len(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE]);
+		if (len > sizeof(ppet))
+			len = sizeof(ppet);
+		memcpy(ppet,
+		       nla_data(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE]),
+		       len);
+	}
+
+	if (len && (phy_cap[3] & BIT(15))) {
+		size_t i;
+
+		printf("\t\t\tPPE Threshold ");
+		for (i = 0; i < len; i++)
+			if (ppet[i])
+				printf("0x%02x ", ppet[i]);
+		printf("\n");
+	}
+}
+
 void iw_hexdump(const char *prefix, const __u8 *buf, size_t size)
 {
 	size_t i;
-- 
2.20.1