* [PATCH V3 1/2] mac80211: HE: add Spatial Reuse IE parsing support
2019-06-18 6:19 [PATCH V3 0/2] mac80211: HE: add SPR/OBSSPD support John Crispin
@ 2019-06-18 6:19 ` John Crispin
2019-06-18 6:19 ` [PATCH V3 2/2] mac80211: allow setting spatial reuse parameters from bss_conf John Crispin
1 sibling, 0 replies; 5+ messages in thread
From: John Crispin @ 2019-06-18 6:19 UTC (permalink / raw)
To: Johannes Berg; +Cc: linux-wireless, John Crispin, Shashidhar Lakkavalli
Add support to mac80211 for parsing SPR IEs as per
P802.11ax_D4.0 section 9.4.2.241.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
---
include/linux/ieee80211.h | 49 ++++++++++++++++++++++++++++++++++++++
net/mac80211/ieee80211_i.h | 1 +
net/mac80211/util.c | 4 ++++
3 files changed, 54 insertions(+)
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 2dbefeffc43c..538d502902c0 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -1628,6 +1628,18 @@ struct ieee80211_he_operation {
u8 optional[0];
} __packed;
+/**
+ * struct ieee80211_he_spr - HE spatial reuse element
+ *
+ * This structure is the "HE spatial reuse element" element as
+ * described in P802.11ax_D4.0 section 9.4.2.241
+ */
+struct ieee80211_he_spr {
+ u8 he_sr_control;
+ /* Optional 0 to 19 bytes: depends on @he_sr_control */
+ u8 optional[0];
+} __packed;
+
/**
* struct ieee80211_he_mu_edca_param_ac_rec - MU AC Parameter Record field
*
@@ -2066,6 +2078,42 @@ ieee80211_he_oper_size(const u8 *he_oper_ie)
return oper_len;
}
+/* HE Spatial Reuse defines */
+#define IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT 0x4
+#define IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT 0x8
+
+/*
+ * ieee80211_he_spr_size - calculate 802.11ax HE Spatial Reuse IE size
+ * @he_spr_ie: byte data of the He Spatial Reuse IE, stating from the the byte
+ * after the ext ID byte. It is assumed that he_spr_ie has at least
+ * sizeof(struct ieee80211_he_spr) bytes, the caller must have validated
+ * this
+ * @return the actual size of the IE data (not including header), or 0 on error
+ */
+static inline u8
+ieee80211_he_spr_size(const u8 *he_spr_ie)
+{
+ struct ieee80211_he_spr *he_spr = (void *)he_spr_ie;
+ u8 spr_len = sizeof(struct ieee80211_he_spr);
+ u32 he_spr_params;
+
+ /* Make sure the input is not NULL */
+ if (!he_spr_ie)
+ return 0;
+
+ /* Calc required length */
+ he_spr_params = le32_to_cpu(he_spr->he_sr_control);
+ if (he_spr_params & IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT)
+ spr_len++;
+ if (he_spr_params & IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT)
+ spr_len += 18;
+
+ /* Add the first byte (extension ID) to the total length */
+ spr_len++;
+
+ return spr_len;
+}
+
/* Authentication algorithms */
#define WLAN_AUTH_OPEN 0
#define WLAN_AUTH_SHARED_KEY 1
@@ -2488,6 +2536,7 @@ enum ieee80211_eid_ext {
WLAN_EID_EXT_HE_OPERATION = 36,
WLAN_EID_EXT_UORA = 37,
WLAN_EID_EXT_HE_MU_EDCA = 38,
+ WLAN_EID_EXT_HE_SPR = 39,
WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME = 52,
WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION = 55,
WLAN_EID_EXT_NON_INHERITANCE = 56,
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 073a8235ae1b..0ee5d82e6734 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1483,6 +1483,7 @@ struct ieee802_11_elems {
const struct ieee80211_meshconf_ie *mesh_config;
const u8 *he_cap;
const struct ieee80211_he_operation *he_operation;
+ const struct ieee80211_he_spr *he_spr;
const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
const u8 *uora_element;
const u8 *mesh_id;
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index cba4633cd6cf..34ce0ed67e59 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1236,6 +1236,10 @@ _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION &&
elen == 3) {
elems->mbssid_config_ie = (void *)&pos[1];
+ } else if (pos[0] == WLAN_EID_EXT_HE_SPR &&
+ elen >= sizeof(*elems->he_spr) &&
+ elen >= ieee80211_he_spr_size(&pos[1])) {
+ elems->he_spr = (void *)&pos[1];
}
break;
default:
--
2.20.1
^ permalink raw reply related [flat|nested] 5+ messages in thread* [PATCH V3 2/2] mac80211: allow setting spatial reuse parameters from bss_conf
2019-06-18 6:19 [PATCH V3 0/2] mac80211: HE: add SPR/OBSSPD support John Crispin
2019-06-18 6:19 ` [PATCH V3 1/2] mac80211: HE: add Spatial Reuse IE parsing support John Crispin
@ 2019-06-18 6:19 ` John Crispin
2019-07-26 11:48 ` Johannes Berg
1 sibling, 1 reply; 5+ messages in thread
From: John Crispin @ 2019-06-18 6:19 UTC (permalink / raw)
To: Johannes Berg; +Cc: linux-wireless, John Crispin, Shashidhar Lakkavalli
Store the OBSS PD parameters inside bss_conf when bringing up an AP and/or
when a station connects to an AP. This allows the driver to configure the
HW accordingly.
Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
---
include/net/cfg80211.h | 15 +++++++++++++
include/net/mac80211.h | 4 ++++
include/uapi/linux/nl80211.h | 27 ++++++++++++++++++++++
net/mac80211/cfg.c | 5 ++++-
net/mac80211/he.c | 24 ++++++++++++++++++++
net/mac80211/ieee80211_i.h | 3 +++
net/mac80211/mlme.c | 1 +
net/wireless/nl80211.c | 43 ++++++++++++++++++++++++++++++++++++
8 files changed, 121 insertions(+), 1 deletion(-)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 2d17e32eb438..49de2c69e63f 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -249,6 +249,19 @@ struct ieee80211_rate {
u16 hw_value, hw_value_short;
};
+/**
+ * struct ieee80211_he_obss_pd - AP settings for spatial reuse
+ *
+ * @enable: is the feature enabled.
+ * @min_offset: minimal tx power offset an associated station shall use
+ * @max_offset: maximum tx power offset an associated station shall use
+ */
+struct ieee80211_he_obss_pd {
+ bool enable;
+ u32 min_offset;
+ u32 max_offset;
+};
+
/**
* struct ieee80211_sta_ht_cap - STA's HT capabilities
*
@@ -899,6 +912,7 @@ enum cfg80211_ap_settings_flags {
* @vht_required: stations must support VHT
* @twt_responder: Enable Target Wait Time
* @flags: flags, as defined in enum cfg80211_ap_settings_flags
+ * @he_obss_pd: OBSS Packet Detection settings
*/
struct cfg80211_ap_settings {
struct cfg80211_chan_def chandef;
@@ -926,6 +940,7 @@ struct cfg80211_ap_settings {
bool ht_required, vht_required;
bool twt_responder;
u32 flags;
+ struct ieee80211_he_obss_pd he_obss_pd;
};
/**
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 4411120e5a9a..1a93ca593c28 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -318,6 +318,7 @@ struct ieee80211_vif_chanctx_switch {
* @BSS_CHANGED_FTM_RESPONDER: fime timing reasurement request responder
* functionality changed for this BSS (AP mode).
* @BSS_CHANGED_TWT: TWT status changed
+ * @BSS_CHANGED_HE_OBSS_PD: OBSS Packet Detection status changed.
*
*/
enum ieee80211_bss_change {
@@ -349,6 +350,7 @@ enum ieee80211_bss_change {
BSS_CHANGED_MCAST_RATE = 1<<25,
BSS_CHANGED_FTM_RESPONDER = 1<<26,
BSS_CHANGED_TWT = 1<<27,
+ BSS_CHANGED_HE_OBSS_PD = 1<<28,
/* when adding here, make sure to change ieee80211_reconfig */
};
@@ -603,6 +605,7 @@ struct ieee80211_ftm_responder_params {
* nontransmitted BSSIDs
* @profile_periodicity: the least number of beacon frames need to be received
* in order to discover all the nontransmitted BSSIDs in the set.
+ * @he_obss_pd: OBSS Packet Detection parameters.
*/
struct ieee80211_bss_conf {
const u8 *bssid;
@@ -664,6 +667,7 @@ struct ieee80211_bss_conf {
u8 bssid_indicator;
bool ema_ap;
u8 profile_periodicity;
+ struct ieee80211_he_obss_pd he_obss_pd;
};
/**
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 8fc3a43cac75..68ee35cbd75e 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -2356,6 +2356,9 @@ enum nl80211_commands {
*
* @NL80211_ATTR_TWT_RESPONDER: Enable target wait time responder support.
*
+ * @NL80211_ATTR_HE_OBSS_PD: nested attribute for OBSS Packet Detection
+ * functionality.
+ *
* @NUM_NL80211_ATTR: total number of nl80211_attrs available
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
@@ -2813,6 +2816,8 @@ enum nl80211_attrs {
NL80211_ATTR_TWT_RESPONDER,
+ NL80211_ATTR_HE_OBSS_PD,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@@ -6488,4 +6493,26 @@ enum nl80211_peer_measurement_ftm_resp {
NL80211_PMSR_FTM_RESP_ATTR_MAX = NUM_NL80211_PMSR_FTM_RESP_ATTR - 1
};
+/**
+ * enum nl80211_he_spr - spatial reuse attributes
+ * @__NL80211_HE_OBSS_PD_ATTR_INVALID: Invalid
+ *
+ * @NL80211_ATTR_HE_OBSS_PD_MIN_OFFSET: the OBSS PD minimum tx power offset.
+ * @NL80211_ATTR_HE_OBSS_PD_MAX_OFFSET: the OBSS PD maximum tx power offset.
+ *
+ * @__NL80211_HE_OBSS_PD_ATTR_LAST: Internal
+ * @NL80211_HE_OBSS_PD_ATTR_MAX: highest spiatl reuse attribute.
+ */
+enum nl80211_he_spr_attributes {
+ __NL80211_HE_OBSS_PD_ATTR_INVALID,
+
+ NL80211_ATTR_HE_OBSS_PD_MIN_OFFSET,
+ NL80211_ATTR_HE_OBSS_PD_MAX_OFFSET,
+
+ /* keep last */
+ __NL80211_ATTR_HE_OBSS_PD_LAST,
+ NL80211_HE_OBSS_PD_ATTR_MAX = __NL80211_ATTR_HE_OBSS_PD_LAST - 1,
+};
+
+
#endif /* __LINUX_NL80211_H */
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index fcf1dfc3a1cc..8a6a38d74878 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -976,7 +976,8 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
BSS_CHANGED_SSID |
BSS_CHANGED_P2P_PS |
BSS_CHANGED_TXPOWER |
- BSS_CHANGED_TWT;
+ BSS_CHANGED_TWT |
+ BSS_CHANGED_HE_OBSS_PD;
int err;
int prev_beacon_int;
@@ -1047,6 +1048,8 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
sdata->vif.bss_conf.enable_beacon = true;
sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
sdata->vif.bss_conf.twt_responder = params->twt_responder;
+ memcpy(&sdata->vif.bss_conf.he_obss_pd, ¶ms->he_obss_pd,
+ sizeof(struct ieee80211_he_obss_pd));
sdata->vif.bss_conf.ssid_len = params->ssid_len;
if (params->ssid_len)
diff --git a/net/mac80211/he.c b/net/mac80211/he.c
index 769078ed5a12..5bb99bd3400c 100644
--- a/net/mac80211/he.c
+++ b/net/mac80211/he.c
@@ -53,3 +53,27 @@ ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
he_cap->has_he = true;
}
+
+void
+ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
+ const struct ieee80211_he_spr *he_spr_ie_elem)
+{
+ struct ieee80211_he_obss_pd *he_obss_pd =
+ &vif->bss_conf.he_obss_pd;
+ const u8 *data = he_spr_ie_elem->optional;
+
+ memset(he_obss_pd, 0, sizeof(*he_obss_pd));
+
+ if (!he_spr_ie_elem)
+ return;
+
+ if (he_spr_ie_elem->he_sr_control &
+ IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT)
+ data++;
+ if (he_spr_ie_elem->he_sr_control &
+ IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT) {
+ he_obss_pd->max_offset = *data++;
+ he_obss_pd->min_offset = *data++;
+ he_obss_pd->enable = true;
+ }
+}
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 0ee5d82e6734..07da9e49db94 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1873,6 +1873,9 @@ ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
struct ieee80211_supported_band *sband,
const u8 *he_cap_ie, u8 he_cap_len,
struct sta_info *sta);
+void
+ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
+ const struct ieee80211_he_spr *he_spr_ie_elem);
/* Spectrum management */
void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index b971b02d0d60..c5fee29ce03c 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -3373,6 +3373,7 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
if (elems.uora_element)
bss_conf->uora_ocw_range = elems.uora_element[0];
+ ieee80211_he_spr_ie_to_bss_conf(&sdata->vif, elems.he_spr);
/* TODO: OPEN: what happens if BSS color disable is set? */
}
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index ff760ba83449..166bc66173f6 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -574,6 +574,7 @@ const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
[NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
.len = SAE_PASSWORD_MAX_LEN },
[NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
+ [NL80211_ATTR_HE_OBSS_PD] = { .type = NLA_NESTED },
};
/* policy for the key attributes */
@@ -4348,6 +4349,40 @@ static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
return 0;
}
+static const struct nla_policy
+ he_spr_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
+ [NL80211_ATTR_HE_OBSS_PD_MIN_OFFSET] = { .type = NLA_U32 },
+ [NL80211_ATTR_HE_OBSS_PD_MAX_OFFSET] = { .type = NLA_U32 },
+};
+
+static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
+ struct ieee80211_he_obss_pd *he_obss_pd)
+{
+ struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
+ int err;
+
+ err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
+ he_spr_policy, NULL);
+ if (err)
+ return err;
+
+ if (!tb[NL80211_ATTR_HE_OBSS_PD_MIN_OFFSET] ||
+ !tb[NL80211_ATTR_HE_OBSS_PD_MAX_OFFSET])
+ return -EINVAL;
+
+ he_obss_pd->min_offset =
+ nla_get_u32(tb[NL80211_ATTR_HE_OBSS_PD_MIN_OFFSET]);
+ he_obss_pd->max_offset =
+ nla_get_u32(tb[NL80211_ATTR_HE_OBSS_PD_MAX_OFFSET]);
+
+ if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
+ return -EINVAL;
+
+ he_obss_pd->enable = true;
+
+ return 0;
+}
+
static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
const u8 *rates)
{
@@ -4632,6 +4667,14 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
params.twt_responder =
nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
+ if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
+ err = nl80211_parse_he_obss_pd(
+ info->attrs[NL80211_ATTR_HE_OBSS_PD],
+ ¶ms.he_obss_pd);
+ if (err)
+ return err;
+ }
+
nl80211_calculate_ap_params(¶ms);
if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
--
2.20.1
^ permalink raw reply related [flat|nested] 5+ messages in thread