summaryrefslogtreecommitdiffstats
path: root/net/mac80211/he.c
diff options
context:
space:
mode:
authorKees Cook <kees+treewide@kernel.org>2026-09-02 15:31:14 -0700
committerKees Cook <kees@kernel.org>2026-09-04 21:37:00 -0700
commit3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch)
treec65086f9bdcd48c6360fb7cb4598bca084da1f32 /net/mac80211/he.c
downloadlinux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz
linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook <kees+treewide@kernel.org>
Diffstat (limited to 'net/mac80211/he.c')
-rw-r--r--net/mac80211/he.c359
1 files changed, 359 insertions, 0 deletions
diff --git a/net/mac80211/he.c b/net/mac80211/he.c
new file mode 100644
index 000000000..5acf482c1
--- /dev/null
+++ b/net/mac80211/he.c
@@ -0,0 +1,359 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * HE handling
+ *
+ * Copyright(c) 2017 Intel Deutschland GmbH
+ * Copyright(c) 2019-2026 Intel Corporation
+ */
+
+#include "ieee80211_i.h"
+#include "rate.h"
+
+static void
+ieee80211_update_from_he_6ghz_capa(const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
+ struct link_sta_info *link_sta)
+{
+ struct sta_info *sta = link_sta->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;
+ }
+
+ link_sta->pub->smps_mode = smps_mode;
+ } else {
+ link_sta->pub->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:
+ link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454;
+ break;
+ case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
+ link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991;
+ break;
+ case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
+ default:
+ link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895;
+ break;
+ }
+
+ ieee80211_sta_recalc_aggregates(&sta->sta);
+
+ link_sta->pub->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,
+ const struct ieee80211_sta_he_cap *own_he_cap_ptr,
+ const u8 *he_cap_ie, u8 he_cap_len,
+ const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
+ struct link_sta_info *link_sta)
+{
+ struct ieee80211_sta_he_cap *he_cap = &link_sta->pub->he_cap;
+ struct ieee80211_sta_he_cap own_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 || !own_he_cap_ptr || !own_he_cap_ptr->has_he)
+ return;
+
+ /* NDI station are using the capabilities from the NMI station */
+ if (WARN_ON_ONCE(sdata->vif.type == NL80211_IFTYPE_NAN_DATA))
+ return;
+
+ own_he_cap = *own_he_cap_ptr;
+
+ /* 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;
+
+ if (he_6ghz_capa)
+ ieee80211_update_from_he_6ghz_capa(he_6ghz_capa, link_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_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 link_sta_info *link_sta)
+{
+ const struct ieee80211_sta_he_cap *own_he_cap =
+ ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
+
+ _ieee80211_he_cap_ie_to_sta_he_cap(sdata, own_he_cap, he_cap_ie,
+ he_cap_len,
+ (sband->band == NL80211_BAND_6GHZ) ?
+ he_6ghz_capa : NULL,
+ link_sta);
+}
+
+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;
+
+ he_obss_pd->sr_ctrl = he_spr_ie_elem->he_sr_control;
+ data = he_spr_ie_elem->optional;
+
+ if (he_spr_ie_elem->he_sr_control &
+ IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT)
+ he_obss_pd->non_srg_max_offset = *data++;
+
+ if (he_spr_ie_elem->he_sr_control &
+ IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT) {
+ he_obss_pd->min_offset = *data++;
+ he_obss_pd->max_offset = *data++;
+ memcpy(he_obss_pd->bss_color_bitmap, data, 8);
+ data += 8;
+ memcpy(he_obss_pd->partial_bssid_bitmap, data, 8);
+ he_obss_pd->enable = true;
+ }
+}
+
+bool ieee80211_prepare_rx_omi_bw(struct ieee80211_link_sta *pub_link_sta,
+ enum ieee80211_sta_rx_bandwidth bw)
+{
+ struct sta_info *sta = container_of(pub_link_sta->sta,
+ struct sta_info, sta);
+ struct ieee80211_local *local = sta->sdata->local;
+ struct link_sta_info *link_sta =
+ sdata_dereference(sta->link[pub_link_sta->link_id], sta->sdata);
+ struct ieee80211_link_data *link =
+ sdata_dereference(sta->sdata->link[pub_link_sta->link_id],
+ sta->sdata);
+ struct ieee80211_chanctx_conf *conf;
+ struct ieee80211_chanctx *chanctx;
+ bool ret;
+
+ if (WARN_ON(!link || !link_sta || link_sta->pub != pub_link_sta))
+ return false;
+
+ conf = sdata_dereference(link->conf->chanctx_conf, sta->sdata);
+ if (WARN_ON(!conf))
+ return false;
+
+ trace_api_prepare_rx_omi_bw(local, sta->sdata, link_sta, bw);
+
+ chanctx = container_of(conf, typeof(*chanctx), conf);
+
+ if (link_sta->rx_omi_bw_staging == bw) {
+ ret = false;
+ goto trace;
+ }
+
+ /* must call this API in pairs */
+ if (WARN_ON(link_sta->rx_omi_bw_tx != link_sta->rx_omi_bw_staging ||
+ link_sta->rx_omi_bw_rx != link_sta->rx_omi_bw_staging)) {
+ ret = false;
+ goto trace;
+ }
+
+ if (bw < link_sta->rx_omi_bw_staging) {
+ link_sta->rx_omi_bw_tx = bw;
+ ieee80211_link_sta_update_rc_bw(link, link_sta);
+ } else {
+ link_sta->rx_omi_bw_rx = bw;
+ ieee80211_recalc_chanctx_min_def(local, chanctx);
+ }
+
+ link_sta->rx_omi_bw_staging = bw;
+ ret = true;
+trace:
+ trace_api_return_bool(local, ret);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(ieee80211_prepare_rx_omi_bw);
+
+void ieee80211_finalize_rx_omi_bw(struct ieee80211_link_sta *pub_link_sta)
+{
+ struct sta_info *sta = container_of(pub_link_sta->sta,
+ struct sta_info, sta);
+ struct ieee80211_local *local = sta->sdata->local;
+ struct link_sta_info *link_sta =
+ sdata_dereference(sta->link[pub_link_sta->link_id], sta->sdata);
+ struct ieee80211_link_data *link =
+ sdata_dereference(sta->sdata->link[pub_link_sta->link_id],
+ sta->sdata);
+ struct ieee80211_chanctx_conf *conf;
+ struct ieee80211_chanctx *chanctx;
+
+ if (WARN_ON(!link || !link_sta || link_sta->pub != pub_link_sta))
+ return;
+
+ conf = sdata_dereference(link->conf->chanctx_conf, sta->sdata);
+ if (WARN_ON(!conf))
+ return;
+
+ trace_api_finalize_rx_omi_bw(local, sta->sdata, link_sta);
+
+ chanctx = container_of(conf, typeof(*chanctx), conf);
+
+ if (link_sta->rx_omi_bw_tx != link_sta->rx_omi_bw_staging) {
+ /* rate control in finalize only when widening bandwidth */
+ WARN_ON(link_sta->rx_omi_bw_tx > link_sta->rx_omi_bw_staging);
+ link_sta->rx_omi_bw_tx = link_sta->rx_omi_bw_staging;
+ ieee80211_link_sta_update_rc_bw(link, link_sta);
+ }
+
+ if (link_sta->rx_omi_bw_rx != link_sta->rx_omi_bw_staging) {
+ /* channel context in finalize only when narrowing bandwidth */
+ WARN_ON(link_sta->rx_omi_bw_rx < link_sta->rx_omi_bw_staging);
+ link_sta->rx_omi_bw_rx = link_sta->rx_omi_bw_staging;
+ ieee80211_recalc_chanctx_min_def(local, chanctx);
+ }
+
+ trace_api_return_void(local);
+}
+EXPORT_SYMBOL_GPL(ieee80211_finalize_rx_omi_bw);