[linux-2.6-block.git] / net / mac80211 / he.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * HE handling
 *
 * Copyright(c) 2017 Intel Deutschland GmbH
 * Copyright(c) 2019 - 2020 Intel Corporation
 */

#include "ieee80211_i.h"

static void
ieee80211_update_from_he_6ghz_capa(const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
				   struct sta_info *sta)
{
	enum ieee80211_smps_mode smps_mode;

	if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
	    sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
		switch (le16_get_bits(he_6ghz_capa->capa,
				      IEEE80211_HE_6GHZ_CAP_SM_PS)) {
		case WLAN_HT_CAP_SM_PS_INVALID:
		case WLAN_HT_CAP_SM_PS_STATIC:
			smps_mode = IEEE80211_SMPS_STATIC;
			break;
		case WLAN_HT_CAP_SM_PS_DYNAMIC:
			smps_mode = IEEE80211_SMPS_DYNAMIC;
			break;
		case WLAN_HT_CAP_SM_PS_DISABLED:
			smps_mode = IEEE80211_SMPS_OFF;
			break;
		}

		sta->sta.smps_mode = smps_mode;
	} else {
		sta->sta.smps_mode = IEEE80211_SMPS_OFF;
	}

	switch (le16_get_bits(he_6ghz_capa->capa,
			      IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) {
	case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
		sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454;
		break;
	case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
		sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991;
		break;
	case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
	default:
		sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895;
		break;
	}

	sta->sta.he_6ghz_capa = *he_6ghz_capa;
}

static void ieee80211_he_mcs_disable(__le16 *he_mcs)
{
	u32 i;

	for (i = 0; i < 8; i++)
		*he_mcs |= cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
}

static void ieee80211_he_mcs_intersection(__le16 *he_own_rx, __le16 *he_peer_rx,
					  __le16 *he_own_tx, __le16 *he_peer_tx)
{
	u32 i;
	u16 own_rx, own_tx, peer_rx, peer_tx;

	for (i = 0; i < 8; i++) {
		own_rx = le16_to_cpu(*he_own_rx);
		own_rx = (own_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;

		own_tx = le16_to_cpu(*he_own_tx);
		own_tx = (own_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;

		peer_rx = le16_to_cpu(*he_peer_rx);
		peer_rx = (peer_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;

		peer_tx = le16_to_cpu(*he_peer_tx);
		peer_tx = (peer_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;

		if (peer_tx != IEEE80211_HE_MCS_NOT_SUPPORTED) {
			if (own_rx == IEEE80211_HE_MCS_NOT_SUPPORTED)
				peer_tx = IEEE80211_HE_MCS_NOT_SUPPORTED;
			else if (own_rx < peer_tx)
				peer_tx = own_rx;
		}

		if (peer_rx != IEEE80211_HE_MCS_NOT_SUPPORTED) {
			if (own_tx == IEEE80211_HE_MCS_NOT_SUPPORTED)
				peer_rx = IEEE80211_HE_MCS_NOT_SUPPORTED;
			else if (own_tx < peer_rx)
				peer_rx = own_tx;
		}

		*he_peer_rx &=
			~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
		*he_peer_rx |= cpu_to_le16(peer_rx << i * 2);

		*he_peer_tx &=
			~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
		*he_peer_tx |= cpu_to_le16(peer_tx << i * 2);
	}
}

void
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,
				  const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
				  struct sta_info *sta)
{
	struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap;
	struct ieee80211_sta_he_cap own_he_cap = sband->iftype_data->he_cap;
	struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie;
	u8 he_ppe_size;
	u8 mcs_nss_size;
	u8 he_total_size;
	bool own_160, peer_160, own_80p80, peer_80p80;

	memset(he_cap, 0, sizeof(*he_cap));

	if (!he_cap_ie || !ieee80211_get_he_sta_cap(sband))
		return;

	/* Make sure size is OK */
	mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap_ie_elem);
	he_ppe_size =
		ieee80211_he_ppe_size(he_cap_ie[sizeof(he_cap->he_cap_elem) +
						mcs_nss_size],
				      he_cap_ie_elem->phy_cap_info);
	he_total_size = sizeof(he_cap->he_cap_elem) + mcs_nss_size +
			he_ppe_size;
	if (he_cap_len < he_total_size)
		return;

	memcpy(&he_cap->he_cap_elem, he_cap_ie, sizeof(he_cap->he_cap_elem));

	/* HE Tx/Rx HE MCS NSS Support Field */
	memcpy(&he_cap->he_mcs_nss_supp,
	       &he_cap_ie[sizeof(he_cap->he_cap_elem)], mcs_nss_size);

	/* Check if there are (optional) PPE Thresholds */
	if (he_cap->he_cap_elem.phy_cap_info[6] &
	    IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT)
		memcpy(he_cap->ppe_thres,
		       &he_cap_ie[sizeof(he_cap->he_cap_elem) + mcs_nss_size],
		       he_ppe_size);

	he_cap->has_he = true;

	sta->cur_max_bandwidth = ieee80211_sta_cap_rx_bw(sta);
	sta->sta.bandwidth = ieee80211_sta_cur_vht_bw(sta);

	if (sband->band == NL80211_BAND_6GHZ && he_6ghz_capa)
		ieee80211_update_from_he_6ghz_capa(he_6ghz_capa, sta);

	ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80,
				      &he_cap->he_mcs_nss_supp.rx_mcs_80,
				      &own_he_cap.he_mcs_nss_supp.tx_mcs_80,
				      &he_cap->he_mcs_nss_supp.tx_mcs_80);

	own_160 = own_he_cap.he_cap_elem.phy_cap_info[0] &
		  IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
	peer_160 = he_cap->he_cap_elem.phy_cap_info[0] &
		   IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;

	if (peer_160 && own_160) {
		ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_160,
					      &he_cap->he_mcs_nss_supp.rx_mcs_160,
					      &own_he_cap.he_mcs_nss_supp.tx_mcs_160,
					      &he_cap->he_mcs_nss_supp.tx_mcs_160);
	} else if (peer_160 && !own_160) {
		ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_160);
		ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_160);
		he_cap->he_cap_elem.phy_cap_info[0] &=
			~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
	}

	own_80p80 = own_he_cap.he_cap_elem.phy_cap_info[0] &
		    IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
	peer_80p80 = he_cap->he_cap_elem.phy_cap_info[0] &
		     IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;

	if (peer_80p80 && own_80p80) {
		ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80p80,
					      &he_cap->he_mcs_nss_supp.rx_mcs_80p80,
					      &own_he_cap.he_mcs_nss_supp.tx_mcs_80p80,
					      &he_cap->he_mcs_nss_supp.tx_mcs_80p80);
	} else if (peer_80p80 && !own_80p80) {
		ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_80p80);
		ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_80p80);
		he_cap->he_cap_elem.phy_cap_info[0] &=
			~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
	}
}

void
ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
			const struct ieee80211_he_operation *he_op_ie)
{
	memset(&vif->bss_conf.he_oper, 0, sizeof(vif->bss_conf.he_oper));
	if (!he_op_ie)
		return;

	vif->bss_conf.he_oper.params = __le32_to_cpu(he_op_ie->he_oper_params);
	vif->bss_conf.he_oper.nss_set = __le16_to_cpu(he_op_ie->he_mcs_nss_set);
}

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;

	memset(he_obss_pd, 0, sizeof(*he_obss_pd));

	if (!he_spr_ie_elem)
		return;
	data = he_spr_ie_elem->optional;

	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;
	}
}
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
41cbb0f5 LC	2	/*
	3	* HE handling
	4	*
	5	* Copyright(c) 2017 Intel Deutschland GmbH
c4d800dc	6	* Copyright(c) 2019 - 2020 Intel Corporation
41cbb0f5 LC	7	*/
	8
	9	#include "ieee80211_i.h"
	10
1bb9a8a4 JB	11	static void
	12	ieee80211_update_from_he_6ghz_capa(const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
	13	struct sta_info *sta)
	14	{
	15	enum ieee80211_smps_mode smps_mode;
	16
	17	if (sta->sdata->vif.type == NL80211_IFTYPE_AP \|\|
	18	sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
	19	switch (le16_get_bits(he_6ghz_capa->capa,
	20	IEEE80211_HE_6GHZ_CAP_SM_PS)) {
	21	case WLAN_HT_CAP_SM_PS_INVALID:
	22	case WLAN_HT_CAP_SM_PS_STATIC:
	23	smps_mode = IEEE80211_SMPS_STATIC;
	24	break;
	25	case WLAN_HT_CAP_SM_PS_DYNAMIC:
	26	smps_mode = IEEE80211_SMPS_DYNAMIC;
	27	break;
	28	case WLAN_HT_CAP_SM_PS_DISABLED:
	29	smps_mode = IEEE80211_SMPS_OFF;
	30	break;
	31	}
	32
	33	sta->sta.smps_mode = smps_mode;
	34	} else {
	35	sta->sta.smps_mode = IEEE80211_SMPS_OFF;
	36	}
	37
	38	switch (le16_get_bits(he_6ghz_capa->capa,
	39	IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) {
	40	case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
	41	sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454;
	42	break;
	43	case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
	44	sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991;
	45	break;
	46	case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
	47	default:
	48	sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895;
	49	break;
	50	}
	51
	52	sta->sta.he_6ghz_capa = *he_6ghz_capa;
	53	}
	54
7f7aa94b WG	55	static void ieee80211_he_mcs_disable(__le16 *he_mcs)
	56	{
	57	u32 i;
	58
	59	for (i = 0; i < 8; i++)
	60	he_mcs \|= cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i 2);
	61	}
	62
	63	static void ieee80211_he_mcs_intersection(__le16 he_own_rx, __le16 he_peer_rx,
	64	__le16 he_own_tx, __le16 he_peer_tx)
	65	{
	66	u32 i;
	67	u16 own_rx, own_tx, peer_rx, peer_tx;
	68
	69	for (i = 0; i < 8; i++) {
	70	own_rx = le16_to_cpu(*he_own_rx);
	71	own_rx = (own_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
	72
	73	own_tx = le16_to_cpu(*he_own_tx);
	74	own_tx = (own_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
	75
	76	peer_rx = le16_to_cpu(*he_peer_rx);
	77	peer_rx = (peer_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
	78
	79	peer_tx = le16_to_cpu(*he_peer_tx);
	80	peer_tx = (peer_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
	81
	82	if (peer_tx != IEEE80211_HE_MCS_NOT_SUPPORTED) {
	83	if (own_rx == IEEE80211_HE_MCS_NOT_SUPPORTED)
	84	peer_tx = IEEE80211_HE_MCS_NOT_SUPPORTED;
	85	else if (own_rx < peer_tx)
	86	peer_tx = own_rx;
	87	}
	88
	89	if (peer_rx != IEEE80211_HE_MCS_NOT_SUPPORTED) {
	90	if (own_tx == IEEE80211_HE_MCS_NOT_SUPPORTED)
	91	peer_rx = IEEE80211_HE_MCS_NOT_SUPPORTED;
	92	else if (own_tx < peer_rx)
	93	peer_rx = own_tx;
	94	}
	95
	96	*he_peer_rx &=
	97	~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
	98	he_peer_rx \|= cpu_to_le16(peer_rx << i 2);
	99
	100	*he_peer_tx &=
	101	~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
	102	he_peer_tx \|= cpu_to_le16(peer_tx << i 2);
	103	}
	104	}
	105
41cbb0f5 LC	106	void
	107	ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
	108	struct ieee80211_supported_band *sband,
	109	const u8 *he_cap_ie, u8 he_cap_len,
1bb9a8a4	110	const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
41cbb0f5 LC	111	struct sta_info *sta)
	112	{
	113	struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap;
7f7aa94b	114	struct ieee80211_sta_he_cap own_he_cap = sband->iftype_data->he_cap;
41cbb0f5 LC	115	struct ieee80211_he_cap_elem he_cap_ie_elem = (void )he_cap_ie;
	116	u8 he_ppe_size;
	117	u8 mcs_nss_size;
	118	u8 he_total_size;
7f7aa94b	119	bool own_160, peer_160, own_80p80, peer_80p80;
41cbb0f5 LC	120
	121	memset(he_cap, 0, sizeof(*he_cap));
	122
	123	if (!he_cap_ie \|\| !ieee80211_get_he_sta_cap(sband))
	124	return;
	125
	126	/* Make sure size is OK */
	127	mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap_ie_elem);
	128	he_ppe_size =
	129	ieee80211_he_ppe_size(he_cap_ie[sizeof(he_cap->he_cap_elem) +
	130	mcs_nss_size],
	131	he_cap_ie_elem->phy_cap_info);
	132	he_total_size = sizeof(he_cap->he_cap_elem) + mcs_nss_size +
	133	he_ppe_size;
	134	if (he_cap_len < he_total_size)
	135	return;
	136
	137	memcpy(&he_cap->he_cap_elem, he_cap_ie, sizeof(he_cap->he_cap_elem));
	138
	139	/* HE Tx/Rx HE MCS NSS Support Field */
	140	memcpy(&he_cap->he_mcs_nss_supp,
	141	&he_cap_ie[sizeof(he_cap->he_cap_elem)], mcs_nss_size);
	142
	143	/* Check if there are (optional) PPE Thresholds */
	144	if (he_cap->he_cap_elem.phy_cap_info[6] &
	145	IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT)
	146	memcpy(he_cap->ppe_thres,
	147	&he_cap_ie[sizeof(he_cap->he_cap_elem) + mcs_nss_size],
	148	he_ppe_size);
	149
	150	he_cap->has_he = true;
cf2c9cc3 JB	151
	152	sta->cur_max_bandwidth = ieee80211_sta_cap_rx_bw(sta);
	153	sta->sta.bandwidth = ieee80211_sta_cur_vht_bw(sta);
1bb9a8a4 JB	154
	155	if (sband->band == NL80211_BAND_6GHZ && he_6ghz_capa)
	156	ieee80211_update_from_he_6ghz_capa(he_6ghz_capa, sta);
7f7aa94b WG	157
	158	ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80,
	159	&he_cap->he_mcs_nss_supp.rx_mcs_80,
	160	&own_he_cap.he_mcs_nss_supp.tx_mcs_80,
	161	&he_cap->he_mcs_nss_supp.tx_mcs_80);
	162
	163	own_160 = own_he_cap.he_cap_elem.phy_cap_info[0] &
	164	IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
	165	peer_160 = he_cap->he_cap_elem.phy_cap_info[0] &
	166	IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
	167
	168	if (peer_160 && own_160) {
	169	ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_160,
	170	&he_cap->he_mcs_nss_supp.rx_mcs_160,
	171	&own_he_cap.he_mcs_nss_supp.tx_mcs_160,
	172	&he_cap->he_mcs_nss_supp.tx_mcs_160);
	173	} else if (peer_160 && !own_160) {
	174	ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_160);
	175	ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_160);
	176	he_cap->he_cap_elem.phy_cap_info[0] &=
	177	~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
	178	}
	179
	180	own_80p80 = own_he_cap.he_cap_elem.phy_cap_info[0] &
	181	IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
	182	peer_80p80 = he_cap->he_cap_elem.phy_cap_info[0] &
	183	IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
	184
	185	if (peer_80p80 && own_80p80) {
	186	ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80p80,
	187	&he_cap->he_mcs_nss_supp.rx_mcs_80p80,
	188	&own_he_cap.he_mcs_nss_supp.tx_mcs_80p80,
	189	&he_cap->he_mcs_nss_supp.tx_mcs_80p80);
	190	} else if (peer_80p80 && !own_80p80) {
	191	ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_80p80);
	192	ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_80p80);
	193	he_cap->he_cap_elem.phy_cap_info[0] &=
	194	~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
	195	}
41cbb0f5	196	}
697f6c50 JC	197
	198	void
	199	ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
60689de4	200	const struct ieee80211_he_operation *he_op_ie)
697f6c50	201	{
60689de4 RM	202	memset(&vif->bss_conf.he_oper, 0, sizeof(vif->bss_conf.he_oper));
60689de4 RM	203	if (!he_op_ie)
697f6c50	204	return;
697f6c50	205
60689de4 RM	206	vif->bss_conf.he_oper.params = __le32_to_cpu(he_op_ie->he_oper_params);
60689de4 RM	207	vif->bss_conf.he_oper.nss_set = __le16_to_cpu(he_op_ie->he_mcs_nss_set);
697f6c50	208	}
1ced169c JC	209
	210	void
	211	ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
	212	const struct ieee80211_he_spr *he_spr_ie_elem)
	213	{
	214	struct ieee80211_he_obss_pd *he_obss_pd =
	215	&vif->bss_conf.he_obss_pd;
5db16ba8	216	const u8 *data;
1ced169c JC	217
	218	memset(he_obss_pd, 0, sizeof(*he_obss_pd));
	219
	220	if (!he_spr_ie_elem)
	221	return;
5db16ba8	222	data = he_spr_ie_elem->optional;
1ced169c JC	223
	224	if (he_spr_ie_elem->he_sr_control &
	225	IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT)
	226	data++;
	227	if (he_spr_ie_elem->he_sr_control &
	228	IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT) {
	229	he_obss_pd->max_offset = *data++;
	230	he_obss_pd->min_offset = *data++;
	231	he_obss_pd->enable = true;
	232	}
	233	}