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Diffstat (limited to 'net/mac80211/util.c')
-rw-r--r--net/mac80211/util.c164
1 files changed, 134 insertions, 30 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 685b55a053f3..1d504c8e6bfc 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -46,6 +46,11 @@ struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
}
EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
+const struct ieee80211_conn_settings ieee80211_conn_settings_unlimited = {
+ .mode = IEEE80211_CONN_MODE_EHT,
+ .bw_limit = IEEE80211_CONN_BW_LIMIT_320,
+};
+
u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
enum nl80211_iftype type)
{
@@ -929,23 +934,31 @@ ieee80211_parse_extension_element(u32 *crc,
switch (elem->data[0]) {
case WLAN_EID_EXT_HE_MU_EDCA:
+ if (params->mode < IEEE80211_CONN_MODE_HE)
+ break;
calc_crc = true;
if (len >= sizeof(*elems->mu_edca_param_set))
elems->mu_edca_param_set = data;
break;
case WLAN_EID_EXT_HE_CAPABILITY:
+ if (params->mode < IEEE80211_CONN_MODE_HE)
+ break;
if (ieee80211_he_capa_size_ok(data, len)) {
elems->he_cap = data;
elems->he_cap_len = len;
}
break;
case WLAN_EID_EXT_HE_OPERATION:
+ if (params->mode < IEEE80211_CONN_MODE_HE)
+ break;
calc_crc = true;
if (len >= sizeof(*elems->he_operation) &&
len >= ieee80211_he_oper_size(data) - 1)
elems->he_operation = data;
break;
case WLAN_EID_EXT_UORA:
+ if (params->mode < IEEE80211_CONN_MODE_HE)
+ break;
if (len >= 1)
elems->uora_element = data;
break;
@@ -958,15 +971,21 @@ ieee80211_parse_extension_element(u32 *crc,
elems->mbssid_config_ie = data;
break;
case WLAN_EID_EXT_HE_SPR:
+ if (params->mode < IEEE80211_CONN_MODE_HE)
+ break;
if (len >= sizeof(*elems->he_spr) &&
len >= ieee80211_he_spr_size(data))
elems->he_spr = data;
break;
case WLAN_EID_EXT_HE_6GHZ_CAPA:
+ if (params->mode < IEEE80211_CONN_MODE_HE)
+ break;
if (len >= sizeof(*elems->he_6ghz_capa))
elems->he_6ghz_capa = data;
break;
case WLAN_EID_EXT_EHT_CAPABILITY:
+ if (params->mode < IEEE80211_CONN_MODE_EHT)
+ break;
if (ieee80211_eht_capa_size_ok(elems->he_cap,
data, len,
params->from_ap)) {
@@ -975,11 +994,15 @@ ieee80211_parse_extension_element(u32 *crc,
}
break;
case WLAN_EID_EXT_EHT_OPERATION:
+ if (params->mode < IEEE80211_CONN_MODE_EHT)
+ break;
if (ieee80211_eht_oper_size_ok(data, len))
elems->eht_operation = data;
calc_crc = true;
break;
case WLAN_EID_EXT_EHT_MULTI_LINK:
+ if (params->mode < IEEE80211_CONN_MODE_EHT)
+ break;
calc_crc = true;
if (ieee80211_mle_size_ok(data, len)) {
@@ -1004,11 +1027,15 @@ ieee80211_parse_extension_element(u32 *crc,
}
break;
case WLAN_EID_EXT_BANDWIDTH_INDICATION:
+ if (params->mode < IEEE80211_CONN_MODE_EHT)
+ break;
if (ieee80211_bandwidth_indication_size_ok(data, len))
elems->bandwidth_indication = data;
calc_crc = true;
break;
case WLAN_EID_EXT_TID_TO_LINK_MAPPING:
+ if (params->mode < IEEE80211_CONN_MODE_EHT)
+ break;
calc_crc = true;
if (ieee80211_tid_to_link_map_size_ok(data, len) &&
elems->ttlm_num < ARRAY_SIZE(elems->ttlm)) {
@@ -1178,24 +1205,32 @@ _ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params,
elems->ext_supp_rates_len = elen;
break;
case WLAN_EID_HT_CAPABILITY:
+ if (params->mode < IEEE80211_CONN_MODE_HT)
+ break;
if (elen >= sizeof(struct ieee80211_ht_cap))
elems->ht_cap_elem = (void *)pos;
else
elem_parse_failed = true;
break;
case WLAN_EID_HT_OPERATION:
+ if (params->mode < IEEE80211_CONN_MODE_HT)
+ break;
if (elen >= sizeof(struct ieee80211_ht_operation))
elems->ht_operation = (void *)pos;
else
elem_parse_failed = true;
break;
case WLAN_EID_VHT_CAPABILITY:
+ if (params->mode < IEEE80211_CONN_MODE_VHT)
+ break;
if (elen >= sizeof(struct ieee80211_vht_cap))
elems->vht_cap_elem = (void *)pos;
else
elem_parse_failed = true;
break;
case WLAN_EID_VHT_OPERATION:
+ if (params->mode < IEEE80211_CONN_MODE_VHT)
+ break;
if (elen >= sizeof(struct ieee80211_vht_operation)) {
elems->vht_operation = (void *)pos;
if (calc_crc)
@@ -1205,6 +1240,8 @@ _ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params,
elem_parse_failed = true;
break;
case WLAN_EID_OPMODE_NOTIF:
+ if (params->mode < IEEE80211_CONN_MODE_VHT)
+ break;
if (elen > 0) {
elems->opmode_notif = pos;
if (calc_crc)
@@ -1264,6 +1301,8 @@ _ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params,
elems->ext_chansw_ie = (void *)pos;
break;
case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
+ if (params->mode < IEEE80211_CONN_MODE_HT)
+ break;
if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
elem_parse_failed = true;
break;
@@ -1279,6 +1318,8 @@ _ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params,
elems->mesh_chansw_params_ie = (void *)pos;
break;
case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
+ if (params->mode < IEEE80211_CONN_MODE_VHT)
+ break;
if (!params->action ||
elen < sizeof(*elems->wide_bw_chansw_ie)) {
elem_parse_failed = true;
@@ -1287,6 +1328,8 @@ _ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params,
elems->wide_bw_chansw_ie = (void *)pos;
break;
case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
+ if (params->mode < IEEE80211_CONN_MODE_VHT)
+ break;
if (params->action) {
elem_parse_failed = true;
break;
@@ -1305,6 +1348,9 @@ _ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params,
elem_parse_failed = true;
}
+ if (params->mode < IEEE80211_CONN_MODE_EHT)
+ break;
+
subelem = cfg80211_find_ext_elem(WLAN_EID_EXT_BANDWIDTH_INDICATION,
pos, elen);
if (subelem) {
@@ -1393,24 +1439,32 @@ _ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params,
elem, elems, params);
break;
case WLAN_EID_S1G_CAPABILITIES:
+ if (params->mode != IEEE80211_CONN_MODE_S1G)
+ break;
if (elen >= sizeof(*elems->s1g_capab))
elems->s1g_capab = (void *)pos;
else
elem_parse_failed = true;
break;
case WLAN_EID_S1G_OPERATION:
+ if (params->mode != IEEE80211_CONN_MODE_S1G)
+ break;
if (elen == sizeof(*elems->s1g_oper))
elems->s1g_oper = (void *)pos;
else
elem_parse_failed = true;
break;
case WLAN_EID_S1G_BCN_COMPAT:
+ if (params->mode != IEEE80211_CONN_MODE_S1G)
+ break;
if (elen == sizeof(*elems->s1g_bcn_compat))
elems->s1g_bcn_compat = (void *)pos;
else
elem_parse_failed = true;
break;
case WLAN_EID_AID_RESPONSE:
+ if (params->mode != IEEE80211_CONN_MODE_S1G)
+ break;
if (elen == sizeof(struct ieee80211_aid_response_ie))
elems->aid_resp = (void *)pos;
else
@@ -1562,6 +1616,7 @@ static void ieee80211_mle_parse_link(struct ieee802_11_elems *elems,
{
struct ieee80211_mle_per_sta_profile *prof;
struct ieee80211_elems_parse_params sub = {
+ .mode = params->mode,
.action = params->action,
.from_ap = params->from_ap,
.link_id = -1,
@@ -1649,6 +1704,7 @@ ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params)
/* Override with nontransmitted profile, if found */
if (nontransmitted_profile_len) {
struct ieee80211_elems_parse_params sub = {
+ .mode = params->mode,
.start = nontransmitted_profile,
.len = nontransmitted_profile_len,
.action = params->action,
@@ -2142,7 +2198,7 @@ static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
if (he_cap &&
cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
IEEE80211_CHAN_NO_HE)) {
- pos = ieee80211_ie_build_he_cap(0, pos, he_cap, end);
+ pos = ieee80211_ie_build_he_cap(NULL, he_cap, pos, end);
if (!pos)
goto out_err;
}
@@ -3201,15 +3257,18 @@ u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
he_cap->he_cap_elem.phy_cap_info);
}
-u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos,
+u8 *ieee80211_ie_build_he_cap(const struct ieee80211_conn_settings *conn,
const struct ieee80211_sta_he_cap *he_cap,
- u8 *end)
+ u8 *pos, u8 *end)
{
struct ieee80211_he_cap_elem elem;
u8 n;
u8 ie_len;
u8 *orig_pos = pos;
+ if (!conn)
+ conn = &ieee80211_conn_settings_unlimited;
+
/* Make sure we have place for the IE */
/*
* TODO: the 1 added is because this temporarily is under the EXTENSION
@@ -3221,18 +3280,15 @@ u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos,
/* modify on stack first to calculate 'n' and 'ie_len' correctly */
elem = he_cap->he_cap_elem;
- if (disable_flags & IEEE80211_CONN_DISABLE_40MHZ)
+ if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_40)
elem.phy_cap_info[0] &=
~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G);
- if (disable_flags & IEEE80211_CONN_DISABLE_160MHZ)
+ if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160)
elem.phy_cap_info[0] &=
- ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
-
- if (disable_flags & IEEE80211_CONN_DISABLE_80P80MHZ)
- elem.phy_cap_info[0] &=
- ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
+ ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
+ IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G);
n = ieee80211_he_mcs_nss_size(&elem);
ie_len = 2 + 1 +
@@ -4367,21 +4423,32 @@ void ieee80211_radar_detected(struct ieee80211_hw *hw)
}
EXPORT_SYMBOL(ieee80211_radar_detected);
-ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
+void ieee80211_chandef_downgrade(struct cfg80211_chan_def *c,
+ struct ieee80211_conn_settings *conn)
{
- ieee80211_conn_flags_t ret;
+ struct ieee80211_conn_settings _ignored = {};
int tmp;
+ /* allow passing NULL if caller doesn't care */
+ if (!conn)
+ conn = &_ignored;
+
switch (c->width) {
+ default:
+ case NL80211_CHAN_WIDTH_20_NOHT:
+ WARN_ON_ONCE(1);
+ fallthrough;
case NL80211_CHAN_WIDTH_20:
c->width = NL80211_CHAN_WIDTH_20_NOHT;
- ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
+ conn->mode = IEEE80211_CONN_MODE_LEGACY;
+ conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20;
break;
case NL80211_CHAN_WIDTH_40:
c->width = NL80211_CHAN_WIDTH_20;
c->center_freq1 = c->chan->center_freq;
- ret = IEEE80211_CONN_DISABLE_40MHZ |
- IEEE80211_CONN_DISABLE_VHT;
+ if (conn->mode == IEEE80211_CONN_MODE_VHT)
+ conn->mode = IEEE80211_CONN_MODE_HT;
+ conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20;
break;
case NL80211_CHAN_WIDTH_80:
tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
@@ -4390,13 +4457,14 @@ ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
/* freq_P40 */
c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
c->width = NL80211_CHAN_WIDTH_40;
- ret = IEEE80211_CONN_DISABLE_VHT;
+ if (conn->mode == IEEE80211_CONN_MODE_VHT)
+ conn->mode = IEEE80211_CONN_MODE_HT;
+ conn->bw_limit = IEEE80211_CONN_BW_LIMIT_40;
break;
case NL80211_CHAN_WIDTH_80P80:
c->center_freq2 = 0;
c->width = NL80211_CHAN_WIDTH_80;
- ret = IEEE80211_CONN_DISABLE_80P80MHZ |
- IEEE80211_CONN_DISABLE_160MHZ;
+ conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80;
break;
case NL80211_CHAN_WIDTH_160:
/* n_P20 */
@@ -4405,8 +4473,7 @@ ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
tmp /= 4;
c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
c->width = NL80211_CHAN_WIDTH_80;
- ret = IEEE80211_CONN_DISABLE_80P80MHZ |
- IEEE80211_CONN_DISABLE_160MHZ;
+ conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80;
break;
case NL80211_CHAN_WIDTH_320:
/* n_P20 */
@@ -4415,30 +4482,28 @@ ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
tmp /= 8;
c->center_freq1 = c->center_freq1 - 80 + 160 * tmp;
c->width = NL80211_CHAN_WIDTH_160;
- ret = IEEE80211_CONN_DISABLE_320MHZ;
- break;
- default:
- case NL80211_CHAN_WIDTH_20_NOHT:
- WARN_ON_ONCE(1);
- c->width = NL80211_CHAN_WIDTH_20_NOHT;
- ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
+ conn->bw_limit = IEEE80211_CONN_BW_LIMIT_160;
break;
case NL80211_CHAN_WIDTH_1:
case NL80211_CHAN_WIDTH_2:
case NL80211_CHAN_WIDTH_4:
case NL80211_CHAN_WIDTH_8:
case NL80211_CHAN_WIDTH_16:
+ WARN_ON_ONCE(1);
+ /* keep c->width */
+ conn->mode = IEEE80211_CONN_MODE_S1G;
+ conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20;
+ break;
case NL80211_CHAN_WIDTH_5:
case NL80211_CHAN_WIDTH_10:
WARN_ON_ONCE(1);
/* keep c->width */
- ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
+ conn->mode = IEEE80211_CONN_MODE_LEGACY;
+ conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20;
break;
}
WARN_ON_ONCE(!cfg80211_chandef_valid(c));
-
- return ret;
}
/*
@@ -5090,3 +5155,42 @@ u8 *ieee80211_ie_build_eht_cap(u8 *pos,
return pos;
}
+
+const char *ieee80211_conn_mode_str(enum ieee80211_conn_mode mode)
+{
+ static const char * const modes[] = {
+ [IEEE80211_CONN_MODE_S1G] = "S1G",
+ [IEEE80211_CONN_MODE_LEGACY] = "legacy",
+ [IEEE80211_CONN_MODE_HT] = "HT",
+ [IEEE80211_CONN_MODE_VHT] = "VHT",
+ [IEEE80211_CONN_MODE_HE] = "HE",
+ [IEEE80211_CONN_MODE_EHT] = "EHT",
+ };
+
+ if (WARN_ON(mode >= ARRAY_SIZE(modes)))
+ return "<out of range>";
+
+ return modes[mode] ?: "<missing string>";
+}
+
+enum ieee80211_conn_bw_limit
+ieee80211_min_bw_limit_from_chandef(struct cfg80211_chan_def *chandef)
+{
+ switch (chandef->width) {
+ case NL80211_CHAN_WIDTH_20_NOHT:
+ case NL80211_CHAN_WIDTH_20:
+ return IEEE80211_CONN_BW_LIMIT_20;
+ case NL80211_CHAN_WIDTH_40:
+ return IEEE80211_CONN_BW_LIMIT_40;
+ case NL80211_CHAN_WIDTH_80:
+ return IEEE80211_CONN_BW_LIMIT_80;
+ case NL80211_CHAN_WIDTH_80P80:
+ case NL80211_CHAN_WIDTH_160:
+ return IEEE80211_CONN_BW_LIMIT_160;
+ case NL80211_CHAN_WIDTH_320:
+ return IEEE80211_CONN_BW_LIMIT_320;
+ default:
+ WARN(1, "unhandled chandef width %d\n", chandef->width);
+ return IEEE80211_CONN_BW_LIMIT_20;
+ }
+}
generated by cgit (git 2.34.1) at 2025-06-05 22:58:00 +0000