The following set of patches add support for new channels on
60GHz band and EDMG channels:
-Nl80211 support for EDMG channels
-Wil6210 support for EDMG channels
Alexei Avshalom Lazar (2):
nl80211: Add support for EDMG channels
wil6210: Add EDMG channel support
drivers/net/wireless/ath/wil6210/cfg80211.c | 205 +++++++++++++++++++++++++--
drivers/net/wireless/ath/wil6210/txrx_edma.c | 2 +
drivers/net/wireless/ath/wil6210/txrx_edma.h | 6 +
drivers/net/wireless/ath/wil6210/wil6210.h | 8 +-
drivers/net/wireless/ath/wil6210/wmi.c | 5 +-
drivers/net/wireless/ath/wil6210/wmi.h | 30 +++-
include/net/cfg80211.h | 39 ++++-
include/uapi/linux/nl80211.h | 19 +++
net/wireless/chan.c | 152 +++++++++++++++++++-
net/wireless/nl80211.c | 33 +++++
net/wireless/util.c | 42 +++++-
11 files changed, 521 insertions(+), 20 deletions(-)
--
1.9.1
Add support for Enhanced Directional Multi-Gigabit (EDMG) channels 9-11.
wil6210 reports it's EDMG capabilities (that are also based on FW
capability) to cfg80211 by filling
wiphy->bands[NL80211_BAND_60GHZ]->edmg_cap.
wil6210 handles edmg_channels and edmg_bw_config requested in connect
and start_ap operations.
Signed-off-by: Alexei Avshalom Lazar <[email protected]>
---
drivers/net/wireless/ath/wil6210/cfg80211.c | 205 +++++++++++++++++++++++++--
drivers/net/wireless/ath/wil6210/txrx_edma.c | 2 +
drivers/net/wireless/ath/wil6210/txrx_edma.h | 6 +
drivers/net/wireless/ath/wil6210/wil6210.h | 8 +-
drivers/net/wireless/ath/wil6210/wmi.c | 5 +-
drivers/net/wireless/ath/wil6210/wmi.h | 30 +++-
6 files changed, 242 insertions(+), 14 deletions(-)
diff --git a/drivers/net/wireless/ath/wil6210/cfg80211.c b/drivers/net/wireless/ath/wil6210/cfg80211.c
index ce68fbc..161d271 100644
--- a/drivers/net/wireless/ath/wil6210/cfg80211.c
+++ b/drivers/net/wireless/ath/wil6210/cfg80211.c
@@ -25,6 +25,22 @@
#define WIL_MAX_ROC_DURATION_MS 5000
+#define WIL_EDMG_CHANNEL_9_SUBCHANNELS (BIT(0) | BIT(1))
+#define WIL_EDMG_CHANNEL_10_SUBCHANNELS (BIT(1) | BIT(2))
+#define WIL_EDMG_CHANNEL_11_SUBCHANNELS (BIT(2) | BIT(3))
+
+/* WIL_EDMG_BW_CONFIGURATION define the allowed channel bandwidth
+ * configurations as defined by IEEE 802.11 section 9.4.2.251, Table 13.
+ * The value 5 allowing CB1 and CB2 of adjacent channels.
+ */
+#define WIL_EDMG_BW_CONFIGURATION 5
+
+/* WIL_EDMG_CHANNELS is a bitmap that indicates the 2.16 GHz channel(s) that
+ * are allowed to be used for EDMG transmissions in the BSS as defined by
+ * IEEE 802.11 section 9.4.2.251.
+ */
+#define WIL_EDMG_CHANNELS (BIT(0) | BIT(1) | BIT(2) | BIT(3))
+
bool disable_ap_sme;
module_param(disable_ap_sme, bool, 0444);
MODULE_PARM_DESC(disable_ap_sme, " let user space handle AP mode SME");
@@ -51,6 +67,39 @@
CHAN60G(4, 0),
};
+/* Rx channel bonding mode */
+enum wil_rx_cb_mode {
+ WIL_RX_CB_MODE_DMG,
+ WIL_RX_CB_MODE_EDMG,
+ WIL_RX_CB_MODE_WIDE,
+};
+
+static int wil_rx_cb_mode_to_n_bonded(u8 cb_mode)
+{
+ switch (cb_mode) {
+ case WIL_RX_CB_MODE_DMG:
+ case WIL_RX_CB_MODE_EDMG:
+ return 1;
+ case WIL_RX_CB_MODE_WIDE:
+ return 2;
+ default:
+ return 1;
+ }
+}
+
+static int wil_tx_cb_mode_to_n_bonded(u8 cb_mode)
+{
+ switch (cb_mode) {
+ case WMI_TX_MODE_DMG:
+ case WMI_TX_MODE_EDMG_CB1:
+ return 1;
+ case WMI_TX_MODE_EDMG_CB2:
+ return 2;
+ default:
+ return 1;
+ }
+}
+
static void
wil_memdup_ie(u8 **pdst, size_t *pdst_len, const u8 *src, size_t src_len)
{
@@ -82,6 +131,12 @@ void update_supported_bands(struct wil6210_priv *wil)
wiphy->bands[NL80211_BAND_60GHZ]->n_channels =
wil_num_supported_channels(wil);
+
+ if (test_bit(WMI_FW_CAPABILITY_CHANNEL_BONDING, wil->fw_capabilities))
+ wiphy->bands[NL80211_BAND_60GHZ]->edmg_cap.channels =
+ WIL_EDMG_CHANNELS;
+ wiphy->bands[NL80211_BAND_60GHZ]->edmg_cap.bw_config =
+ WIL_EDMG_BW_CONFIGURATION;
}
/* Vendor id to be used in vendor specific command and events
@@ -296,6 +351,86 @@ int wil_iftype_nl2wmi(enum nl80211_iftype type)
return -EOPNOTSUPP;
}
+int wil_spec2wmi_ch(u8 spec_ch, u8 *wmi_ch)
+{
+ switch (spec_ch) {
+ case 1:
+ *wmi_ch = WMI_CHANNEL_1;
+ break;
+ case 2:
+ *wmi_ch = WMI_CHANNEL_2;
+ break;
+ case 3:
+ *wmi_ch = WMI_CHANNEL_3;
+ break;
+ case 4:
+ *wmi_ch = WMI_CHANNEL_4;
+ break;
+ case 5:
+ *wmi_ch = WMI_CHANNEL_5;
+ break;
+ case 6:
+ *wmi_ch = WMI_CHANNEL_6;
+ break;
+ case 9:
+ *wmi_ch = WMI_CHANNEL_9;
+ break;
+ case 10:
+ *wmi_ch = WMI_CHANNEL_10;
+ break;
+ case 11:
+ *wmi_ch = WMI_CHANNEL_11;
+ break;
+ case 12:
+ *wmi_ch = WMI_CHANNEL_12;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+int wil_wmi2spec_ch(u8 wmi_ch, u8 *spec_ch)
+{
+ switch (wmi_ch) {
+ case WMI_CHANNEL_1:
+ *spec_ch = 1;
+ break;
+ case WMI_CHANNEL_2:
+ *spec_ch = 2;
+ break;
+ case WMI_CHANNEL_3:
+ *spec_ch = 3;
+ break;
+ case WMI_CHANNEL_4:
+ *spec_ch = 4;
+ break;
+ case WMI_CHANNEL_5:
+ *spec_ch = 5;
+ break;
+ case WMI_CHANNEL_6:
+ *spec_ch = 6;
+ break;
+ case WMI_CHANNEL_9:
+ *spec_ch = 9;
+ break;
+ case WMI_CHANNEL_10:
+ *spec_ch = 10;
+ break;
+ case WMI_CHANNEL_11:
+ *spec_ch = 11;
+ break;
+ case WMI_CHANNEL_12:
+ *spec_ch = 12;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
int wil_cid_fill_sinfo(struct wil6210_vif *vif, int cid,
struct station_info *sinfo)
{
@@ -310,6 +445,7 @@ int wil_cid_fill_sinfo(struct wil6210_vif *vif, int cid,
} __packed reply;
struct wil_net_stats *stats = &wil->sta[cid].stats;
int rc;
+ u8 txflag = RATE_INFO_FLAGS_DMG;
memset(&reply, 0, sizeof(reply));
@@ -322,7 +458,8 @@ int wil_cid_fill_sinfo(struct wil6210_vif *vif, int cid,
" MCS %d TSF 0x%016llx\n"
" BF status 0x%08x RSSI %d SQI %d%%\n"
" Tx Tpt %d goodput %d Rx goodput %d\n"
- " Sectors(rx:tx) my %d:%d peer %d:%d\n""}\n",
+ " Sectors(rx:tx) my %d:%d peer %d:%d\n"
+ " Tx mode %d}\n",
cid, vif->mid, le16_to_cpu(reply.evt.bf_mcs),
le64_to_cpu(reply.evt.tsf), reply.evt.status,
reply.evt.rssi,
@@ -333,7 +470,8 @@ int wil_cid_fill_sinfo(struct wil6210_vif *vif, int cid,
le16_to_cpu(reply.evt.my_rx_sector),
le16_to_cpu(reply.evt.my_tx_sector),
le16_to_cpu(reply.evt.other_rx_sector),
- le16_to_cpu(reply.evt.other_tx_sector));
+ le16_to_cpu(reply.evt.other_tx_sector),
+ reply.evt.tx_mode);
sinfo->generation = wil->sinfo_gen;
@@ -346,9 +484,16 @@ int wil_cid_fill_sinfo(struct wil6210_vif *vif, int cid,
BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC) |
BIT_ULL(NL80211_STA_INFO_TX_FAILED);
- sinfo->txrate.flags = RATE_INFO_FLAGS_DMG;
+ if (wil->use_enhanced_dma_hw && reply.evt.tx_mode != WMI_TX_MODE_DMG)
+ txflag = RATE_INFO_FLAGS_EDMG;
+
+ sinfo->txrate.flags = txflag;
sinfo->txrate.mcs = le16_to_cpu(reply.evt.bf_mcs);
sinfo->rxrate.mcs = stats->last_mcs_rx;
+ sinfo->txrate.n_bonded_ch =
+ wil_tx_cb_mode_to_n_bonded(reply.evt.tx_mode);
+ sinfo->rxrate.n_bonded_ch =
+ wil_rx_cb_mode_to_n_bonded(stats->last_cb_mode_rx);
sinfo->rx_bytes = stats->rx_bytes;
sinfo->rx_packets = stats->rx_packets;
sinfo->rx_dropped_misc = stats->rx_dropped;
@@ -1006,6 +1151,33 @@ static int wil_ft_connect(struct wiphy *wiphy,
return rc;
}
+static int wil_get_wmi_edmg_channel(struct wil6210_priv *wil, u8 edmg_bw_config,
+ u8 edmg_channels, u8 *wmi_ch)
+{
+ if (!edmg_bw_config) {
+ *wmi_ch = 0;
+ return 0;
+ } else if (edmg_bw_config == WIL_EDMG_BW_CONFIGURATION) {
+ /* convert from edmg channel bitmap into edmg channel number */
+ switch (edmg_channels) {
+ case WIL_EDMG_CHANNEL_9_SUBCHANNELS:
+ return wil_spec2wmi_ch(9, wmi_ch);
+ case WIL_EDMG_CHANNEL_10_SUBCHANNELS:
+ return wil_spec2wmi_ch(10, wmi_ch);
+ case WIL_EDMG_CHANNEL_11_SUBCHANNELS:
+ return wil_spec2wmi_ch(11, wmi_ch);
+ default:
+ wil_err(wil, "Unsupported edmg channel bitmap 0x%x\n",
+ edmg_channels);
+ return -EINVAL;
+ }
+ } else {
+ wil_err(wil, "Unsupported EDMG BW configuration %d\n",
+ edmg_bw_config);
+ return -EINVAL;
+ }
+}
+
static int wil_cfg80211_connect(struct wiphy *wiphy,
struct net_device *ndev,
struct cfg80211_connect_params *sme)
@@ -1151,6 +1323,11 @@ static int wil_cfg80211_connect(struct wiphy *wiphy,
memcpy(conn.ssid, ssid_eid+2, conn.ssid_len);
conn.channel = ch - 1;
+ rc = wil_get_wmi_edmg_channel(wil, sme->edmg_bw_config,
+ sme->edmg_channels, &conn.edmg_channel);
+ if (rc < 0)
+ return rc;
+
ether_addr_copy(conn.bssid, bss->bssid);
ether_addr_copy(conn.dst_mac, bss->bssid);
@@ -1707,7 +1884,7 @@ static int _wil_cfg80211_set_ies(struct wil6210_vif *vif,
static int _wil_cfg80211_start_ap(struct wiphy *wiphy,
struct net_device *ndev,
const u8 *ssid, size_t ssid_len, u32 privacy,
- int bi, u8 chan,
+ int bi, u8 chan, u8 wmi_edmg_channel,
struct cfg80211_beacon_data *bcon,
u8 hidden_ssid, u32 pbss)
{
@@ -1770,6 +1947,7 @@ static int _wil_cfg80211_start_ap(struct wiphy *wiphy,
vif->privacy = privacy;
vif->channel = chan;
+ vif->wmi_edmg_channel = wmi_edmg_channel;
vif->hidden_ssid = hidden_ssid;
vif->pbss = pbss;
vif->bi = bi;
@@ -1780,7 +1958,8 @@ static int _wil_cfg80211_start_ap(struct wiphy *wiphy,
if (!wil_has_other_active_ifaces(wil, ndev, false, true))
wil6210_bus_request(wil, WIL_MAX_BUS_REQUEST_KBPS);
- rc = wmi_pcp_start(vif, bi, wmi_nettype, chan, hidden_ssid, is_go);
+ rc = wmi_pcp_start(vif, bi, wmi_nettype, chan, wmi_edmg_channel,
+ hidden_ssid, is_go);
if (rc)
goto err_pcp_start;
@@ -1832,7 +2011,8 @@ void wil_cfg80211_ap_recovery(struct wil6210_priv *wil)
rc = _wil_cfg80211_start_ap(wiphy, ndev,
vif->ssid, vif->ssid_len,
vif->privacy, vif->bi,
- vif->channel, &bcon,
+ vif->channel,
+ vif->wmi_edmg_channel, &bcon,
vif->hidden_ssid, vif->pbss);
if (rc) {
wil_err(wil, "vif %d recovery failed (%d)\n", i, rc);
@@ -1882,7 +2062,8 @@ static int wil_cfg80211_change_beacon(struct wiphy *wiphy,
rc = _wil_cfg80211_start_ap(wiphy, ndev, vif->ssid,
vif->ssid_len, privacy,
wdev->beacon_interval,
- vif->channel, bcon,
+ vif->channel,
+ vif->wmi_edmg_channel, bcon,
vif->hidden_ssid,
vif->pbss);
} else {
@@ -1901,10 +2082,17 @@ static int wil_cfg80211_start_ap(struct wiphy *wiphy,
struct ieee80211_channel *channel = info->chandef.chan;
struct cfg80211_beacon_data *bcon = &info->beacon;
struct cfg80211_crypto_settings *crypto = &info->crypto;
+ u8 wmi_edmg_channel;
u8 hidden_ssid;
wil_dbg_misc(wil, "start_ap\n");
+ rc = wil_get_wmi_edmg_channel(wil, info->chandef.edmg_bw_config,
+ info->chandef.edmg_channels,
+ &wmi_edmg_channel);
+ if (rc < 0)
+ return rc;
+
if (!channel) {
wil_err(wil, "AP: No channel???\n");
return -EINVAL;
@@ -1944,7 +2132,8 @@ static int wil_cfg80211_start_ap(struct wiphy *wiphy,
rc = _wil_cfg80211_start_ap(wiphy, ndev,
info->ssid, info->ssid_len, info->privacy,
info->beacon_interval, channel->hw_value,
- bcon, hidden_ssid, info->pbss);
+ wmi_edmg_channel, bcon, hidden_ssid,
+ info->pbss);
return rc;
}
diff --git a/drivers/net/wireless/ath/wil6210/txrx_edma.c b/drivers/net/wireless/ath/wil6210/txrx_edma.c
index c387738..0c9bb2c 100644
--- a/drivers/net/wireless/ath/wil6210/txrx_edma.c
+++ b/drivers/net/wireless/ath/wil6210/txrx_edma.c
@@ -1006,6 +1006,8 @@ static struct sk_buff *wil_sring_reap_rx_edma(struct wil6210_priv *wil,
stats->rx_per_mcs[stats->last_mcs_rx]++;
}
+ stats->last_cb_mode_rx = wil_rx_status_get_cb_mode(msg);
+
if (!wil->use_rx_hw_reordering && !wil->use_compressed_rx_status &&
wil_check_bar(wil, msg, cid, skb, stats) == -EAGAIN) {
kfree_skb(skb);
diff --git a/drivers/net/wireless/ath/wil6210/txrx_edma.h b/drivers/net/wireless/ath/wil6210/txrx_edma.h
index 343516a..2680ffc 100644
--- a/drivers/net/wireless/ath/wil6210/txrx_edma.h
+++ b/drivers/net/wireless/ath/wil6210/txrx_edma.h
@@ -366,6 +366,12 @@ static inline u8 wil_rx_status_get_mcs(void *msg)
16, 21);
}
+static inline u8 wil_rx_status_get_cb_mode(void *msg)
+{
+ return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d1,
+ 22, 23);
+}
+
static inline u16 wil_rx_status_get_flow_id(void *msg)
{
return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0,
diff --git a/drivers/net/wireless/ath/wil6210/wil6210.h b/drivers/net/wireless/ath/wil6210/wil6210.h
index e1b1039b..d32c0bf 100644
--- a/drivers/net/wireless/ath/wil6210/wil6210.h
+++ b/drivers/net/wireless/ath/wil6210/wil6210.h
@@ -590,6 +590,7 @@ struct wil_net_stats {
unsigned long rx_amsdu_error; /* eDMA specific */
unsigned long rx_csum_err;
u16 last_mcs_rx;
+ u8 last_cb_mode_rx;
u64 rx_per_mcs[WIL_MCS_MAX + 1];
u32 ft_roams; /* relevant in STA mode */
};
@@ -851,6 +852,7 @@ struct wil6210_vif {
DECLARE_BITMAP(status, wil_vif_status_last);
u32 privacy; /* secure connection? */
u16 channel; /* relevant in AP mode */
+ u8 wmi_edmg_channel; /* relevant in AP mode */
u8 hidden_ssid; /* relevant in AP mode */
u32 ap_isolate; /* no intra-BSS communication */
bool pbss;
@@ -1313,7 +1315,7 @@ int wil_cid_fill_sinfo(struct wil6210_vif *vif, int cid,
int wmi_set_mac_address(struct wil6210_priv *wil, void *addr);
int wmi_pcp_start(struct wil6210_vif *vif, int bi, u8 wmi_nettype, u8 chan,
- u8 hidden_ssid, u8 is_go);
+ u8 edmg_chan, u8 hidden_ssid, u8 is_go);
int wmi_pcp_stop(struct wil6210_vif *vif);
int wmi_led_cfg(struct wil6210_priv *wil, bool enable);
int wmi_abort_scan(struct wil6210_vif *vif);
@@ -1389,6 +1391,10 @@ int wmi_start_sched_scan(struct wil6210_priv *wil,
int wmi_mgmt_tx_ext(struct wil6210_vif *vif, const u8 *buf, size_t len,
u8 channel, u16 duration_ms);
+int wil_wmi2spec_ch(u8 wmi_ch, u8 *spec_ch);
+int wil_spec2wmi_ch(u8 spec_ch, u8 *wmi_ch);
+void wil_update_supported_bands(struct wil6210_priv *wil);
+
int reverse_memcmp(const void *cs, const void *ct, size_t count);
/* WMI for enhanced DMA */
diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c
index bda4a97..fe8530d 100644
--- a/drivers/net/wireless/ath/wil6210/wmi.c
+++ b/drivers/net/wireless/ath/wil6210/wmi.c
@@ -2123,8 +2123,8 @@ int wmi_led_cfg(struct wil6210_priv *wil, bool enable)
return rc;
}
-int wmi_pcp_start(struct wil6210_vif *vif,
- int bi, u8 wmi_nettype, u8 chan, u8 hidden_ssid, u8 is_go)
+int wmi_pcp_start(struct wil6210_vif *vif, int bi, u8 wmi_nettype,
+ u8 chan, u8 wmi_edmg_chan, u8 hidden_ssid, u8 is_go)
{
struct wil6210_priv *wil = vif_to_wil(vif);
int rc;
@@ -2134,6 +2134,7 @@ int wmi_pcp_start(struct wil6210_vif *vif,
.network_type = wmi_nettype,
.disable_sec_offload = 1,
.channel = chan - 1,
+ .edmg_channel = wmi_edmg_chan,
.pcp_max_assoc_sta = max_assoc_sta,
.hidden_ssid = hidden_ssid,
.is_go = is_go,
diff --git a/drivers/net/wireless/ath/wil6210/wmi.h b/drivers/net/wireless/ath/wil6210/wmi.h
index b668758..1b39aeb 100644
--- a/drivers/net/wireless/ath/wil6210/wmi.h
+++ b/drivers/net/wireless/ath/wil6210/wmi.h
@@ -95,6 +95,7 @@ enum wmi_fw_capability {
WMI_FW_CAPABILITY_SET_SILENT_RSSI_TABLE = 13,
WMI_FW_CAPABILITY_LO_POWER_CALIB_FROM_OTP = 14,
WMI_FW_CAPABILITY_PNO = 15,
+ WMI_FW_CAPABILITY_CHANNEL_BONDING = 17,
WMI_FW_CAPABILITY_REF_CLOCK_CONTROL = 18,
WMI_FW_CAPABILITY_AP_SME_OFFLOAD_NONE = 19,
WMI_FW_CAPABILITY_MULTI_VIFS = 20,
@@ -355,6 +356,19 @@ enum wmi_connect_ctrl_flag_bits {
#define WMI_MAX_SSID_LEN (32)
+enum wmi_channel {
+ WMI_CHANNEL_1 = 0x00,
+ WMI_CHANNEL_2 = 0x01,
+ WMI_CHANNEL_3 = 0x02,
+ WMI_CHANNEL_4 = 0x03,
+ WMI_CHANNEL_5 = 0x04,
+ WMI_CHANNEL_6 = 0x05,
+ WMI_CHANNEL_9 = 0x06,
+ WMI_CHANNEL_10 = 0x07,
+ WMI_CHANNEL_11 = 0x08,
+ WMI_CHANNEL_12 = 0x09,
+};
+
/* WMI_CONNECT_CMDID */
struct wmi_connect_cmd {
u8 network_type;
@@ -366,8 +380,12 @@ struct wmi_connect_cmd {
u8 group_crypto_len;
u8 ssid_len;
u8 ssid[WMI_MAX_SSID_LEN];
+ /* enum wmi_channel WMI_CHANNEL_1..WMI_CHANNEL_6; for EDMG this is
+ * the primary channel number
+ */
u8 channel;
- u8 reserved0;
+ /* enum wmi_channel WMI_CHANNEL_9..WMI_CHANNEL_12 */
+ u8 edmg_channel;
u8 bssid[WMI_MAC_LEN];
__le32 ctrl_flags;
u8 dst_mac[WMI_MAC_LEN];
@@ -2267,7 +2285,9 @@ struct wmi_notify_req_done_event {
__le32 status;
__le64 tsf;
s8 rssi;
- u8 reserved0[3];
+ /* enum wmi_edmg_tx_mode */
+ u8 tx_mode;
+ u8 reserved0[2];
__le32 tx_tpt;
__le32 tx_goodput;
__le32 rx_goodput;
@@ -2283,8 +2303,12 @@ struct wmi_notify_req_done_event {
/* WMI_CONNECT_EVENTID */
struct wmi_connect_event {
+ /* enum wmi_channel WMI_CHANNEL_1..WMI_CHANNEL_6; for EDMG this is
+ * the primary channel number
+ */
u8 channel;
- u8 reserved0;
+ /* enum wmi_channel WMI_CHANNEL_9..WMI_CHANNEL_12 */
+ u8 edmg_channel;
u8 bssid[WMI_MAC_LEN];
__le16 listen_interval;
__le16 beacon_interval;
--
1.9.1
802.11ay specification defines Enhanced Directional Multi-Gigabit
(EDMG) STA and AP which allow channel bonding of 2 channels and more.
Introduce NL80211_ATTR_WIPHY_EDMG_CHANNELS,
NL80211_ATTR_WIPHY_EDMG_BW_CONFIG, NL80211_BAND_ATTR_EDMG_CHANNELS,
NL80211_BAND_ATTR_EDMG_BW_CONFIG and RATE_INFO_FLAGS_EDMG
that needed for enabling and configuring EDMG support.
Driver is expected to report its EDMG capabilities: whether EDMG
is supported and the supported EDMG channels.
Bitrate calculation is enhanced to take into account EDMG support
according to the 802.11ay specification.
The kernel uses NL80211_BAND_ATTR_EDMG_CHANNELS and
NL80211_BAND_ATTR_EDMG_BW_CONFIG attributes in order to publish
the EDMG capabilities to the userspace.
NL80211_BAND_ATTR_EDMG_CHANNELS is a bitmap field that indicates
the 2.16 GHz channel(s) that are allowed to be used for transmissions
in the BSS.
If NL80211_BAND_ATTR_EDMG_CHANNELS is not set then EDMG not
supported. NL80211_BAND_ATTR_EDMG_BW_CONFIG represent the allowed
channel bandwidth configurations.
NL80211_ATTR_WIPHY_EDMG_CHANNELS and NL80211_ATTR_WIPHY_EDMG_BW_CONFIG
will be used by the userspace for AP configuration and connect command.
Signed-off-by: Alexei Avshalom Lazar <[email protected]>
---
drivers/net/wireless/ath/wil6210/cfg80211.c | 2 +-
include/net/cfg80211.h | 39 ++++++-
include/uapi/linux/nl80211.h | 19 ++++
net/wireless/chan.c | 152 +++++++++++++++++++++++++++-
net/wireless/nl80211.c | 33 ++++++
net/wireless/util.c | 42 +++++++-
6 files changed, 280 insertions(+), 7 deletions(-)
diff --git a/drivers/net/wireless/ath/wil6210/cfg80211.c b/drivers/net/wireless/ath/wil6210/cfg80211.c
index a1e226652..ce68fbc 100644
--- a/drivers/net/wireless/ath/wil6210/cfg80211.c
+++ b/drivers/net/wireless/ath/wil6210/cfg80211.c
@@ -346,7 +346,7 @@ int wil_cid_fill_sinfo(struct wil6210_vif *vif, int cid,
BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC) |
BIT_ULL(NL80211_STA_INFO_TX_FAILED);
- sinfo->txrate.flags = RATE_INFO_FLAGS_60G;
+ sinfo->txrate.flags = RATE_INFO_FLAGS_DMG;
sinfo->txrate.mcs = le16_to_cpu(reply.evt.bf_mcs);
sinfo->rxrate.mcs = stats->last_mcs_rx;
sinfo->rx_bytes = stats->rx_bytes;
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 117691f..f2d2239 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -321,6 +321,23 @@ struct ieee80211_sband_iftype_data {
};
/**
+ * struct ieee80211_sta_edmg_cap - EDMG capabilities
+ *
+ * This structure describes most essential parameters needed
+ * to describe 802.11ay EDMG capabilities
+ *
+ * @channels: bitmap that indicates the 2.16 GHz channel(s)
+ * that are allowed to be used for transmissions in the BSS.
+ * Set to 0 indicate EDMG not supported.
+ * @bw_config: Channel BW Configuration subfield encodes
+ * the allowed channel bandwidth configurations
+ */
+struct ieee80211_sta_edmg_cap {
+ u8 channels;
+ u8 bw_config;
+};
+
+/**
* struct ieee80211_supported_band - frequency band definition
*
* This structure describes a frequency band a wiphy
@@ -336,6 +353,7 @@ struct ieee80211_sband_iftype_data {
* @n_bitrates: Number of bitrates in @bitrates
* @ht_cap: HT capabilities in this band
* @vht_cap: VHT capabilities in this band
+ * @edmg_cap: EDMG capabilities in this band
* @n_iftype_data: number of iftype data entries
* @iftype_data: interface type data entries. Note that the bits in
* @types_mask inside this structure cannot overlap (i.e. only
@@ -350,6 +368,7 @@ struct ieee80211_supported_band {
int n_bitrates;
struct ieee80211_sta_ht_cap ht_cap;
struct ieee80211_sta_vht_cap vht_cap;
+ struct ieee80211_sta_edmg_cap edmg_cap;
u16 n_iftype_data;
const struct ieee80211_sband_iftype_data *iftype_data;
};
@@ -503,12 +522,18 @@ struct key_params {
* @center_freq1: center frequency of first segment
* @center_freq2: center frequency of second segment
* (only with 80+80 MHz)
+ * @edmg_channels: bitmap that indicates the 2.16 GHz channel(s)
+ * that are allowed to be used for transmissions in the BSS.
+ * @edmg_bw_config: Channel BW Configuration subfield encodes
+ * the allowed channel bandwidth configurations
*/
struct cfg80211_chan_def {
struct ieee80211_channel *chan;
enum nl80211_chan_width width;
u32 center_freq1;
u32 center_freq2;
+ u8 edmg_channels;
+ u8 edmg_bw_config;
};
/**
@@ -1144,15 +1169,17 @@ int cfg80211_check_station_change(struct wiphy *wiphy,
* @RATE_INFO_FLAGS_MCS: mcs field filled with HT MCS
* @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS
* @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
- * @RATE_INFO_FLAGS_60G: 60GHz MCS
+ * @RATE_INFO_FLAGS_DMG: 60GHz MCS
* @RATE_INFO_FLAGS_HE_MCS: HE MCS information
+ * @RATE_INFO_FLAGS_EDMG: 60GHz MCS in EDMG mode
*/
enum rate_info_flags {
RATE_INFO_FLAGS_MCS = BIT(0),
RATE_INFO_FLAGS_VHT_MCS = BIT(1),
RATE_INFO_FLAGS_SHORT_GI = BIT(2),
- RATE_INFO_FLAGS_60G = BIT(3),
+ RATE_INFO_FLAGS_DMG = BIT(3),
RATE_INFO_FLAGS_HE_MCS = BIT(4),
+ RATE_INFO_FLAGS_EDMG = BIT(5),
};
/**
@@ -1192,6 +1219,7 @@ enum rate_info_bw {
* @he_dcm: HE DCM value
* @he_ru_alloc: HE RU allocation (from &enum nl80211_he_ru_alloc,
* only valid if bw is %RATE_INFO_BW_HE_RU)
+ * @n_bonded_ch: In case of EDMG the number of bonded channels (1-4)
*/
struct rate_info {
u8 flags;
@@ -1202,6 +1230,7 @@ struct rate_info {
u8 he_gi;
u8 he_dcm;
u8 he_ru_alloc;
+ u8 n_bonded_ch;
};
/**
@@ -2403,6 +2432,10 @@ struct cfg80211_bss_selection {
* @fils_erp_rrk_len: Length of @fils_erp_rrk in octets.
* @want_1x: indicates user-space supports and wants to use 802.1X driver
* offload of 4-way handshake.
+ * @edmg_channels: bitmap that indicates the 2.16 GHz channel(s)
+ * that are allowed to be used for transmissions in the BSS.
+ * @edmg_bw_config: Channel BW Configuration subfield encodes
+ * the allowed channel bandwidth configurations
*/
struct cfg80211_connect_params {
struct ieee80211_channel *channel;
@@ -2436,6 +2469,8 @@ struct cfg80211_connect_params {
const u8 *fils_erp_rrk;
size_t fils_erp_rrk_len;
bool want_1x;
+ u8 edmg_channels;
+ u8 edmg_bw_config;
};
/**
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 25f70dd..f74cce1 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -2324,6 +2324,13 @@ enum nl80211_commands {
* should be picking up the lowest tx power, either tx power per-interface
* or per-station.
*
+ * @NL80211_ATTR_WIPHY_EDMG_CHANNELS: bitmap that indicates the 2.16 GHz
+ * channel(s) that are allowed to be used for EDMG transmissions in the
+ * BSS as defined by IEEE 802.11 section 9.4.2.251.
+ * @NL80211_ATTR_WIPHY_EDMG_BW_CONFIG: Channel BW Configuration subfield encodes
+ * the allowed channel bandwidth configurations as defined by IEEE 802.11
+ * section 9.4.2.251, Table 13.
+ *
* @NUM_NL80211_ATTR: total number of nl80211_attrs available
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
@@ -2777,6 +2784,9 @@ enum nl80211_attrs {
NL80211_ATTR_STA_TX_POWER_SETTING,
NL80211_ATTR_STA_TX_POWER,
+ NL80211_ATTR_WIPHY_EDMG_CHANNELS,
+ NL80211_ATTR_WIPHY_EDMG_BW_CONFIG,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@@ -3385,6 +3395,12 @@ enum nl80211_band_iftype_attr {
* @NL80211_BAND_ATTR_VHT_CAPA: VHT capabilities, as in the HT information IE
* @NL80211_BAND_ATTR_IFTYPE_DATA: nested array attribute, with each entry using
* attributes from &enum nl80211_band_iftype_attr
+ * @NL80211_BAND_ATTR_EDMG_CHANNELS: bitmap that indicates the 2.16 GHz
+ * channel(s) that are allowed to be used for EDMG transmissions in the
+ * BSS as defined by IEEE 802.11 section 9.4.2.251.
+ * @NL80211_BAND_ATTR_EDMG_BW_CONFIG: Channel BW Configuration subfield
+ * encodes the allowed channel bandwidth configurations as defined by
+ * IEEE 802.11 section 9.4.2.251, Table 13.
* @NL80211_BAND_ATTR_MAX: highest band attribute currently defined
* @__NL80211_BAND_ATTR_AFTER_LAST: internal use
*/
@@ -3402,6 +3418,9 @@ enum nl80211_band_attr {
NL80211_BAND_ATTR_VHT_CAPA,
NL80211_BAND_ATTR_IFTYPE_DATA,
+ NL80211_BAND_ATTR_EDMG_CHANNELS,
+ NL80211_BAND_ATTR_EDMG_BW_CONFIG,
+
/* keep last */
__NL80211_BAND_ATTR_AFTER_LAST,
NL80211_BAND_ATTR_MAX = __NL80211_BAND_ATTR_AFTER_LAST - 1
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index 7dc1bbd..d23135c 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -23,6 +23,8 @@ void cfg80211_chandef_create(struct cfg80211_chan_def *chandef,
chandef->chan = chan;
chandef->center_freq2 = 0;
+ chandef->edmg_bw_config = 0;
+ chandef->edmg_channels = 0;
switch (chan_type) {
case NL80211_CHAN_NO_HT:
@@ -47,6 +49,92 @@ void cfg80211_chandef_create(struct cfg80211_chan_def *chandef,
}
EXPORT_SYMBOL(cfg80211_chandef_create);
+static bool cfg80211_edmg_chandef_valid(const struct cfg80211_chan_def *chandef)
+{
+ int max_continuous = 0;
+ int num_of_enabled = 0;
+ int continuous = 0;
+ int i;
+
+ if (!chandef->edmg_channels && !chandef->edmg_bw_config)
+ return true;
+
+ if ((!chandef->edmg_channels && chandef->edmg_bw_config) ||
+ (chandef->edmg_channels && !chandef->edmg_bw_config))
+ return false;
+
+ for (i = 0; i < 6; i++) {
+ if (chandef->edmg_channels & BIT(i)) {
+ continuous++;
+ num_of_enabled++;
+ } else {
+ continuous = 0;
+ }
+
+ max_continuous = max(continuous, max_continuous);
+ }
+ /* basic verification of edmg configuration according to
+ * IEEE802.11 section 9.4.2.251
+ */
+ /* check bw_config against continuous edmg channels */
+ switch (chandef->edmg_bw_config) {
+ case 4:
+ case 8:
+ case 12:
+ if (max_continuous < 1)
+ return false;
+ break;
+ case 5:
+ case 9:
+ case 13:
+ if (max_continuous < 2)
+ return false;
+ break;
+ case 6:
+ case 10:
+ case 14:
+ if (max_continuous < 3)
+ return false;
+ break;
+ case 7:
+ case 11:
+ case 15:
+ if (max_continuous < 4)
+ return false;
+ break;
+
+ default:
+ return false;
+ }
+
+ /* check bw_config against aggregated (non continuous) edmg channels */
+ switch (chandef->edmg_bw_config) {
+ case 4:
+ case 5:
+ case 6:
+ case 7:
+ break;
+ case 8:
+ case 9:
+ case 10:
+ case 11:
+ if (num_of_enabled < 2)
+ return false;
+ break;
+ case 12:
+ case 13:
+ case 14:
+ case 15:
+ if (num_of_enabled < 4 || max_continuous < 2)
+ return false;
+ break;
+ default:
+ return false;
+ }
+
+ return true;
+}
+
bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
{
u32 control_freq;
@@ -112,7 +200,7 @@ bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
return false;
}
- return true;
+ return cfg80211_edmg_chandef_valid(chandef);
}
EXPORT_SYMBOL(cfg80211_chandef_valid);
@@ -721,12 +809,65 @@ static bool cfg80211_secondary_chans_ok(struct wiphy *wiphy,
return true;
}
+/* check if the operating channels are valid and supported */
+static bool cfg80211_edmg_usable(struct wiphy *wiphy, u8 edmg_channels,
+ u8 edmg_bw_config, int primary_channel,
+ struct ieee80211_sta_edmg_cap *edmg_cap)
+{
+ struct ieee80211_channel *chan;
+ int i, freq;
+ int channels_counter = 0;
+
+ if (!edmg_channels && !edmg_bw_config)
+ return true;
+
+ if ((!edmg_channels && edmg_bw_config) ||
+ (edmg_channels && !edmg_bw_config))
+ return false;
+
+ if (!(edmg_channels & BIT(primary_channel - 1)))
+ return false;
+
+ /* 60GHz channels 1..6 */
+ for (i = 0; i < 6; i++) {
+ if (!(edmg_channels & BIT(i)))
+ continue;
+
+ if (!(edmg_cap->channels & BIT(i)))
+ return false;
+
+ channels_counter++;
+
+ freq = ieee80211_channel_to_frequency(i + 1,
+ NL80211_BAND_60GHZ);
+ chan = ieee80211_get_channel(wiphy, freq);
+ if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
+ return false;
+ }
+
+ /* IEEE802.11 allows max 4 channels */
+ if (channels_counter > 4)
+ return false;
+
+ /* check bw_config is a subset of what driver supports
+ * (see IEEE 802.11 section 9.4.2.251, Table 13)
+ */
+ if ((edmg_bw_config % 4) > (edmg_cap->bw_config % 4))
+ return false;
+
+ if (edmg_bw_config > edmg_cap->bw_config)
+ return false;
+
+ return true;
+}
+
bool cfg80211_chandef_usable(struct wiphy *wiphy,
const struct cfg80211_chan_def *chandef,
u32 prohibited_flags)
{
struct ieee80211_sta_ht_cap *ht_cap;
struct ieee80211_sta_vht_cap *vht_cap;
+ struct ieee80211_sta_edmg_cap *edmg_cap;
u32 width, control_freq, cap;
if (WARN_ON(!cfg80211_chandef_valid(chandef)))
@@ -734,6 +875,15 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
ht_cap = &wiphy->bands[chandef->chan->band]->ht_cap;
vht_cap = &wiphy->bands[chandef->chan->band]->vht_cap;
+ edmg_cap = &wiphy->bands[chandef->chan->band]->edmg_cap;
+
+ if (edmg_cap->channels &&
+ !cfg80211_edmg_usable(wiphy,
+ chandef->edmg_channels,
+ chandef->edmg_bw_config,
+ chandef->chan->hw_value,
+ edmg_cap))
+ return false;
control_freq = chandef->chan->center_freq;
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index da3843a..c6d4b44 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -288,6 +288,9 @@ static int validate_ie_attr(const struct nlattr *attr,
[NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
+ [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = { .type = NLA_U8 },
+ [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = { .type = NLA_U8 },
+
[NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
[NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
[NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
@@ -1501,6 +1504,15 @@ static int nl80211_send_band_rateinfo(struct sk_buff *msg,
nla_nest_end(msg, nl_iftype_data);
}
+ /* add EDMG info */
+ if (sband->edmg_cap.channels &&
+ (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
+ sband->edmg_cap.channels) ||
+ nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
+ sband->edmg_cap.bw_config)))
+
+ return -ENOBUFS;
+
/* add bitrates */
nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
if (!nl_rates)
@@ -2560,6 +2572,18 @@ int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
}
+ if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
+ chandef->edmg_channels =
+ nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
+
+ if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
+ chandef->edmg_bw_config =
+ nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
+ } else {
+ chandef->edmg_bw_config = 0;
+ chandef->edmg_channels = 0;
+ }
+
if (!cfg80211_chandef_valid(chandef)) {
NL_SET_ERR_MSG(extack, "invalid channel definition");
return -EINVAL;
@@ -9699,6 +9723,15 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
}
+ if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
+ connect.edmg_channels =
+ nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
+
+ if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
+ connect.edmg_bw_config =
+ nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
+ }
+
if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
connkeys = nl80211_parse_connkeys(rdev, info, NULL);
if (IS_ERR(connkeys))
diff --git a/net/wireless/util.c b/net/wireless/util.c
index cf63b63..7d06dd6 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -1034,7 +1034,7 @@ static u32 cfg80211_calculate_bitrate_ht(struct rate_info *rate)
return (bitrate + 50000) / 100000;
}
-static u32 cfg80211_calculate_bitrate_60g(struct rate_info *rate)
+static u32 cfg80211_calculate_bitrate_dmg(struct rate_info *rate)
{
static const u32 __mcs2bitrate[] = {
/* control PHY */
@@ -1081,6 +1081,40 @@ static u32 cfg80211_calculate_bitrate_60g(struct rate_info *rate)
return __mcs2bitrate[rate->mcs];
}
+static u32 cfg80211_calculate_bitrate_edmg(struct rate_info *rate)
+{
+ static const u32 __mcs2bitrate[] = {
+ /* control PHY */
+ [0] = 275,
+ /* SC PHY */
+ [1] = 3850,
+ [2] = 7700,
+ [3] = 9625,
+ [4] = 11550,
+ [5] = 12512, /* 1251.25 mbps */
+ [6] = 13475,
+ [7] = 15400,
+ [8] = 19250,
+ [9] = 23100,
+ [10] = 25025,
+ [11] = 26950,
+ [12] = 30800,
+ [13] = 38500,
+ [14] = 46200,
+ [15] = 50050,
+ [16] = 53900,
+ [17] = 57750,
+ [18] = 69300,
+ [19] = 75075,
+ [20] = 80850,
+ };
+
+ if (WARN_ON_ONCE(rate->mcs >= ARRAY_SIZE(__mcs2bitrate)))
+ return 0;
+
+ return __mcs2bitrate[rate->mcs] * rate->n_bonded_ch;
+}
+
static u32 cfg80211_calculate_bitrate_vht(struct rate_info *rate)
{
static const u32 base[4][10] = {
@@ -1253,8 +1287,10 @@ u32 cfg80211_calculate_bitrate(struct rate_info *rate)
{
if (rate->flags & RATE_INFO_FLAGS_MCS)
return cfg80211_calculate_bitrate_ht(rate);
- if (rate->flags & RATE_INFO_FLAGS_60G)
- return cfg80211_calculate_bitrate_60g(rate);
+ if (rate->flags & RATE_INFO_FLAGS_DMG)
+ return cfg80211_calculate_bitrate_dmg(rate);
+ if (rate->flags & RATE_INFO_FLAGS_EDMG)
+ return cfg80211_calculate_bitrate_edmg(rate);
if (rate->flags & RATE_INFO_FLAGS_VHT_MCS)
return cfg80211_calculate_bitrate_vht(rate);
if (rate->flags & RATE_INFO_FLAGS_HE_MCS)
--
1.9.1
Alexei Avshalom Lazar <[email protected]> writes:
> The following set of patches add support for new channels on
> 60GHz band and EDMG channels:
> -Nl80211 support for EDMG channels
> -Wil6210 support for EDMG channels
>
> Alexei Avshalom Lazar (2):
> nl80211: Add support for EDMG channels
> wil6210: Add EDMG channel support
Please always add a changelog to help the reviewers:
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches#changelog_missing
--
Kalle Valo
Hi Alexei,
Sorry for the long delay here.
I have a few questions.
Looking at this:
> /**
> + * struct ieee80211_sta_edmg_cap - EDMG capabilities
> + *
> + * This structure describes most essential parameters needed
> + * to describe 802.11ay EDMG capabilities
> + *
> + * @channels: bitmap that indicates the 2.16 GHz channel(s)
> + * that are allowed to be used for transmissions in the BSS.
> + * Set to 0 indicate EDMG not supported.
> + * @bw_config: Channel BW Configuration subfield encodes
> + * the allowed channel bandwidth configurations
> + */
> +struct ieee80211_sta_edmg_cap {
> + u8 channels;
> + u8 bw_config;
> +};
What are the bits actually? Seems you should define some enum or so that
shows which bits are used here?
> * @center_freq1: center frequency of first segment
> * @center_freq2: center frequency of second segment
> * (only with 80+80 MHz)
> + * @edmg_channels: bitmap that indicates the 2.16 GHz channel(s)
> + * that are allowed to be used for transmissions in the BSS.
> + * @edmg_bw_config: Channel BW Configuration subfield encodes
> + * the allowed channel bandwidth configurations
> */
> struct cfg80211_chan_def {
> struct ieee80211_channel *chan;
> enum nl80211_chan_width width;
> u32 center_freq1;
> u32 center_freq2;
> + u8 edmg_channels;
> + u8 edmg_bw_config;
> };
This isn't clear to me. How can the capability and the configuration be
exactly the same? In the capability, you should be able to capture
multiple possible things, and in the setting only choose one?
And if they really are the same, why not use the struct
ieee80211_sta_edmg_cap here? Seems weird to me, but I don't know 11ay.
Also, I think you should describe a bit more how this plays together
with the existing settings. Will ->chan still be set, to something like
the control channel?
> /**
> @@ -1144,15 +1169,17 @@ int cfg80211_check_station_change(struct wiphy *wiphy,
> * @RATE_INFO_FLAGS_MCS: mcs field filled with HT MCS
> * @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS
> * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
> - * @RATE_INFO_FLAGS_60G: 60GHz MCS
> + * @RATE_INFO_FLAGS_DMG: 60GHz MCS
> * @RATE_INFO_FLAGS_HE_MCS: HE MCS information
> + * @RATE_INFO_FLAGS_EDMG: 60GHz MCS in EDMG mode
> */
> enum rate_info_flags {
> RATE_INFO_FLAGS_MCS = BIT(0),
> RATE_INFO_FLAGS_VHT_MCS = BIT(1),
> RATE_INFO_FLAGS_SHORT_GI = BIT(2),
> - RATE_INFO_FLAGS_60G = BIT(3),
> + RATE_INFO_FLAGS_DMG = BIT(3),
> RATE_INFO_FLAGS_HE_MCS = BIT(4),
> + RATE_INFO_FLAGS_EDMG = BIT(5),
> };
>
> /**
> @@ -1192,6 +1219,7 @@ enum rate_info_bw {
> * @he_dcm: HE DCM value
> * @he_ru_alloc: HE RU allocation (from &enum nl80211_he_ru_alloc,
> * only valid if bw is %RATE_INFO_BW_HE_RU)
> + * @n_bonded_ch: In case of EDMG the number of bonded channels (1-4)
> */
> struct rate_info {
> u8 flags;
> @@ -1202,6 +1230,7 @@ struct rate_info {
> u8 he_gi;
> u8 he_dcm;
> u8 he_ru_alloc;
> + u8 n_bonded_ch;
> };
It seems like this is missing corresponding nl80211.h changes?
> @@ -2436,6 +2469,8 @@ struct cfg80211_connect_params {
> const u8 *fils_erp_rrk;
> size_t fils_erp_rrk_len;
> bool want_1x;
> + u8 edmg_channels;
> + u8 edmg_bw_config;
> };
Same question as above, why not embed the struct if it's the same?
Again it seems like it shouldn't be the same though.
> + * @NL80211_ATTR_WIPHY_EDMG_CHANNELS: bitmap that indicates the 2.16 GHz
> + * channel(s) that are allowed to be used for EDMG transmissions in the
> + * BSS as defined by IEEE 802.11 section 9.4.2.251.
> + * @NL80211_ATTR_WIPHY_EDMG_BW_CONFIG: Channel BW Configuration subfield encodes
> + * the allowed channel bandwidth configurations as defined by IEEE 802.11
> + * section 9.4.2.251, Table 13.
This is unclear - "in the BSS" means nothing in this context, since
you're using this to advertise capabilities?
This isn't a BSS attribute, after all.
Ah - but looking further, you use this to *set* the channel, not for
capabilities... I guess that makes sense.
> * @NL80211_BAND_ATTR_VHT_CAPA: VHT capabilities, as in the HT information IE
> * @NL80211_BAND_ATTR_IFTYPE_DATA: nested array attribute, with each entry using
> * attributes from &enum nl80211_band_iftype_attr
> + * @NL80211_BAND_ATTR_EDMG_CHANNELS: bitmap that indicates the 2.16 GHz
> + * channel(s) that are allowed to be used for EDMG transmissions in the
> + * BSS as defined by IEEE 802.11 section 9.4.2.251.
> + * @NL80211_BAND_ATTR_EDMG_BW_CONFIG: Channel BW Configuration subfield
> + * encodes the allowed channel bandwidth configurations as defined by
> + * IEEE 802.11 section 9.4.2.251, Table 13.
> * @NL80211_BAND_ATTR_MAX: highest band attribute currently defined
> * @__NL80211_BAND_ATTR_AFTER_LAST: internal use
And ... that makes more sense than the global attribute I guess?
> +static bool cfg80211_edmg_chandef_valid(const struct cfg80211_chan_def *chandef)
> +{
> + int max_continuous = 0;
> + int num_of_enabled = 0;
> + int continuous = 0;
do you mean "contiguous"? "continuous" doesn't make much sense?
> + int i;
> +
> + if (!chandef->edmg_channels && !chandef->edmg_bw_config)
> + return true;
> +
> + if ((!chandef->edmg_channels && chandef->edmg_bw_config) ||
> + (chandef->edmg_channels && !chandef->edmg_bw_config))
> + return false;
There probably should be some kind of WARN_ON() check that validates you
get here only if the ->chan is actually 60GHz?
> +++ b/net/wireless/nl80211.c
> @@ -288,6 +288,9 @@ static int validate_ie_attr(const struct nlattr *attr,
>
> [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
> [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
> + [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = { .type = NLA_U8 },
> + [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = { .type = NLA_U8 },
You probably want something like NLA_POLICY_RANGE() here? This was only
1-4 IIRC?
> + if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
> + chandef->edmg_channels =
> + nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
> +
> + if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
> + chandef->edmg_bw_config =
> + nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
> + } else {
> + chandef->edmg_bw_config = 0;
> + chandef->edmg_channels = 0;
> + }
> +
> if (!cfg80211_chandef_valid(chandef)) {
So I guess what I suggested above shouldn't actually be a WARN_ON() but
just a check w/o WARN_ON()?
johannes
On 2019-06-14 15:31, Johannes Berg wrote:
> Hi Alexei,
>
> Sorry for the long delay here.
>
> I have a few questions.
>
> Looking at this:
Hi Johannes,
Thank you for the review, comments inline.
Thanks,
Alex.
>
>> /**
>> + * struct ieee80211_sta_edmg_cap - EDMG capabilities
>> + *
>> + * This structure describes most essential parameters needed
>> + * to describe 802.11ay EDMG capabilities
>> + *
>> + * @channels: bitmap that indicates the 2.16 GHz channel(s)
>> + * that are allowed to be used for transmissions in the BSS.
>> + * Set to 0 indicate EDMG not supported.
>> + * @bw_config: Channel BW Configuration subfield encodes
>> + * the allowed channel bandwidth configurations
>> + */
>> +struct ieee80211_sta_edmg_cap {
>> + u8 channels;
>> + u8 bw_config;
>> +};
>
> What are the bits actually? Seems you should define some enum or so
> that
> shows which bits are used here?
Enum is not needed in this case, Each bit in the channels represent
legacy
channel, bit 0 represent channel 1, bit 1 represent channel 2 and so
on...
till bit 5 that represent channel 6.
I will update the description to make it more clear.
>
>> * @center_freq1: center frequency of first segment
>> * @center_freq2: center frequency of second segment
>> * (only with 80+80 MHz)
>> + * @edmg_channels: bitmap that indicates the 2.16 GHz channel(s)
>> + * that are allowed to be used for transmissions in the BSS.
>> + * @edmg_bw_config: Channel BW Configuration subfield encodes
>> + * the allowed channel bandwidth configurations
>> */
>> struct cfg80211_chan_def {
>> struct ieee80211_channel *chan;
>> enum nl80211_chan_width width;
>> u32 center_freq1;
>> u32 center_freq2;
>> + u8 edmg_channels;
>> + u8 edmg_bw_config;
>> };
>
> This isn't clear to me. How can the capability and the configuration be
> exactly the same? In the capability, you should be able to capture
> multiple possible things, and in the setting only choose one?
edmg_channels can specify multiple channels and edmg_bw_config can
specify
multiple bonding options. For example edmg_bw_config = 15 means that
association is allowed/requested with bonding of 1, 2, 3 or 4 channels.
When driver reports capability - it obviously can report multiple
options.
For the setting (connect command or start AP), kernel can request
multiple
options (subset of reported capabilities) and the driver will choose one
of
them, based on BSS configuration and resource availability.
>
> And if they really are the same, why not use the struct
> ieee80211_sta_edmg_cap here? Seems weird to me, but I don't know 11ay.
Good comment, will use the ieee80211_sta_edmg_cap struct.
>
>
> Also, I think you should describe a bit more how this plays together
> with the existing settings. Will ->chan still be set, to something like
> the control channel?
Updated cfg80211.h
wil->chan in case of 11ay is the primary channel and other setting being
ignored.
>
>> /**
>> @@ -1144,15 +1169,17 @@ int cfg80211_check_station_change(struct wiphy
>> *wiphy,
>> * @RATE_INFO_FLAGS_MCS: mcs field filled with HT MCS
>> * @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS
>> * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
>> - * @RATE_INFO_FLAGS_60G: 60GHz MCS
>> + * @RATE_INFO_FLAGS_DMG: 60GHz MCS
>> * @RATE_INFO_FLAGS_HE_MCS: HE MCS information
>> + * @RATE_INFO_FLAGS_EDMG: 60GHz MCS in EDMG mode
>> */
>> enum rate_info_flags {
>> RATE_INFO_FLAGS_MCS = BIT(0),
>> RATE_INFO_FLAGS_VHT_MCS = BIT(1),
>> RATE_INFO_FLAGS_SHORT_GI = BIT(2),
>> - RATE_INFO_FLAGS_60G = BIT(3),
>> + RATE_INFO_FLAGS_DMG = BIT(3),
>> RATE_INFO_FLAGS_HE_MCS = BIT(4),
>> + RATE_INFO_FLAGS_EDMG = BIT(5),
>> };
>>
>> /**
>> @@ -1192,6 +1219,7 @@ enum rate_info_bw {
>> * @he_dcm: HE DCM value
>> * @he_ru_alloc: HE RU allocation (from &enum nl80211_he_ru_alloc,
>> * only valid if bw is %RATE_INFO_BW_HE_RU)
>> + * @n_bonded_ch: In case of EDMG the number of bonded channels (1-4)
>> */
>> struct rate_info {
>> u8 flags;
>> @@ -1202,6 +1230,7 @@ struct rate_info {
>> u8 he_gi;
>> u8 he_dcm;
>> u8 he_ru_alloc;
>> + u8 n_bonded_ch;
>> };
>
>
> It seems like this is missing corresponding nl80211.h changes?
n_bonded_ch not exposed to the userspace, like flags.
>
>> @@ -2436,6 +2469,8 @@ struct cfg80211_connect_params {
>> const u8 *fils_erp_rrk;
>> size_t fils_erp_rrk_len;
>> bool want_1x;
>> + u8 edmg_channels;
>> + u8 edmg_bw_config;
>> };
>
> Same question as above, why not embed the struct if it's the same?
Done.
>
> Again it seems like it shouldn't be the same though.
>
>> + * @NL80211_ATTR_WIPHY_EDMG_CHANNELS: bitmap that indicates the 2.16
>> GHz
>> + * channel(s) that are allowed to be used for EDMG transmissions in
>> the
>> + * BSS as defined by IEEE 802.11 section 9.4.2.251.
>> + * @NL80211_ATTR_WIPHY_EDMG_BW_CONFIG: Channel BW Configuration
>> subfield encodes
>> + * the allowed channel bandwidth configurations as defined by IEEE
>> 802.11
>> + * section 9.4.2.251, Table 13.
>
> This is unclear - "in the BSS" means nothing in this context, since
> you're using this to advertise capabilities?
>
> This isn't a BSS attribute, after all.
>
> Ah - but looking further, you use this to *set* the channel, not for
> capabilities... I guess that makes sense.
You are correct, this is for setting the channel, I've updated the
description.
>
>
>> * @NL80211_BAND_ATTR_VHT_CAPA: VHT capabilities, as in the HT
>> information IE
>> * @NL80211_BAND_ATTR_IFTYPE_DATA: nested array attribute, with each
>> entry using
>> * attributes from &enum nl80211_band_iftype_attr
>> + * @NL80211_BAND_ATTR_EDMG_CHANNELS: bitmap that indicates the 2.16
>> GHz
>> + * channel(s) that are allowed to be used for EDMG transmissions in
>> the
>> + * BSS as defined by IEEE 802.11 section 9.4.2.251.
>> + * @NL80211_BAND_ATTR_EDMG_BW_CONFIG: Channel BW Configuration
>> subfield
>> + * encodes the allowed channel bandwidth configurations as defined by
>> + * IEEE 802.11 section 9.4.2.251, Table 13.
>> * @NL80211_BAND_ATTR_MAX: highest band attribute currently defined
>> * @__NL80211_BAND_ATTR_AFTER_LAST: internal use
>
> And ... that makes more sense than the global attribute I guess?
We feel it belongs to the BAND attributes because for example also VHT
capability is there. There are however 2 other options:
1. Move the attribute to the NL80211_FREQUENCY_ATTR
2. Move them to the global attributes
Any preference?
>
>> +static bool cfg80211_edmg_chandef_valid(const struct
>> cfg80211_chan_def *chandef)
>> +{
>> + int max_continuous = 0;
>> + int num_of_enabled = 0;
>> + int continuous = 0;
>
> do you mean "contiguous"? "continuous" doesn't make much sense?
Updated , contiguous.
>
>> + int i;
>> +
>> + if (!chandef->edmg_channels && !chandef->edmg_bw_config)
>> + return true;
>> +
>> + if ((!chandef->edmg_channels && chandef->edmg_bw_config) ||
>> + (chandef->edmg_channels && !chandef->edmg_bw_config))
>> + return false;
>
> There probably should be some kind of WARN_ON() check that validates
> you
> get here only if the ->chan is actually 60GHz?
Added 60GHz check.
>
>> +++ b/net/wireless/nl80211.c
>> @@ -288,6 +288,9 @@ static int validate_ie_attr(const struct nlattr
>> *attr,
>>
>> [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
>> [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
>> + [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = { .type = NLA_U8 },
>> + [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = { .type = NLA_U8 },
>
> You probably want something like NLA_POLICY_RANGE() here? This was only
> 1-4 IIRC?
Updated to NLA_POLICY_RANGE, the range value is 4-15, align with the
Spec.
>
>> + if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
>> + chandef->edmg_channels =
>> + nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
>> +
>> + if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
>> + chandef->edmg_bw_config =
>> + nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
>> + } else {
>> + chandef->edmg_bw_config = 0;
>> + chandef->edmg_channels = 0;
>> + }
>> +
>> if (!cfg80211_chandef_valid(chandef)) {
>
> So I guess what I suggested above shouldn't actually be a WARN_ON() but
> just a check w/o WARN_ON()?
Added 60GHz check.
>
> johannes
--
Alexei Lazar
Qualcomm Israel, on behalf of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum a
Linux Foundation Collaborative Project
On Tue, 2019-06-25 at 13:21 +0300, Alexei Lazar wrote:
>
> > > * @NL80211_BAND_ATTR_VHT_CAPA: VHT capabilities, as in the HT
> > > information IE
> > > * @NL80211_BAND_ATTR_IFTYPE_DATA: nested array attribute, with each
> > > entry using
> > > * attributes from &enum nl80211_band_iftype_attr
> > > + * @NL80211_BAND_ATTR_EDMG_CHANNELS: bitmap that indicates the 2.16
> > > GHz
> > > + * channel(s) that are allowed to be used for EDMG transmissions in
> > > the
> > > + * BSS as defined by IEEE 802.11 section 9.4.2.251.
> > > + * @NL80211_BAND_ATTR_EDMG_BW_CONFIG: Channel BW Configuration
> > > subfield
> > > + * encodes the allowed channel bandwidth configurations as defined by
> > > + * IEEE 802.11 section 9.4.2.251, Table 13.
> > > * @NL80211_BAND_ATTR_MAX: highest band attribute currently defined
> > > * @__NL80211_BAND_ATTR_AFTER_LAST: internal use
> >
> > And ... that makes more sense than the global attribute I guess?
>
> We feel it belongs to the BAND attributes because for example also VHT
> capability is there. There are however 2 other options:
> 1. Move the attribute to the NL80211_FREQUENCY_ATTR
> 2. Move them to the global attributes
> Any preference?
I think I just got confused. Is this used for capability reporting then?
I guess that'd make sense here, yeah.
johannes