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wifi: nl80211: retrieve EHT related elements in AP mode

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Add support to retrieve EHT capabilities and EHT operation elements
passed by the userspace in the beacon template and store the pointers
in struct cfg80211_ap_settings to be used by the drivers.

Co-developed-by: Vikram Kandukuri <quic_vikram@quicinc.com>
Signed-off-by: Vikram Kandukuri <quic_vikram@quicinc.com>
Co-developed-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Link: https://lore.kernel.org/r/20220523064904.28523-1-quic_alokad@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Aloka Dixit 2022-05-22 23:49:04 -07:00 committed by Johannes Berg
parent ecad3b0b99
commit 8bc65d38ee
2 changed files with 28 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/net/cfg80211.h
View File

@ -1296,6 +1296,8 @@ struct cfg80211_unsol_bcast_probe_resp {
* @ht_cap: HT capabilities (or %NULL if HT isn't enabled)
* @vht_cap: VHT capabilities (or %NULL if VHT isn't enabled)
* @he_cap: HE capabilities (or %NULL if HE isn't enabled)
* @eht_cap: EHT capabilities (or %NULL if EHT isn't enabled)
* @eht_oper: EHT operation IE (or %NULL if EHT isn't enabled)
* @ht_required: stations must support HT
* @vht_required: stations must support VHT
* @twt_responder: Enable Target Wait Time
@ -1332,6 +1334,8 @@ struct cfg80211_ap_settings {
const struct ieee80211_vht_cap *vht_cap;
const struct ieee80211_he_cap_elem *he_cap;
const struct ieee80211_he_operation *he_oper;
const struct ieee80211_eht_cap_elem *eht_cap;
const struct ieee80211_eht_operation *eht_oper;
bool ht_required, vht_required, he_required, sae_h2e_required;
bool twt_responder;
u32 flags;

26
net/wireless/nl80211.c
View File

@ -5522,7 +5522,7 @@ static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
* HT/VHT requirements/capabilities, we parse them out of the IEs for the
* benefit of drivers that rebuild IEs in the firmware.
*/
static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
{
const struct cfg80211_beacon_data *bcn = &params->beacon;
size_t ies_len = bcn->tail_len;
@ -5548,6 +5548,26 @@ static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
if (cap && cap->datalen >= sizeof(*params->he_oper) + 1)
params->he_oper = (void *)(cap->data + 1);
cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len);
if (cap) {
if (!cap->datalen)
return -EINVAL;
params->eht_cap = (void *)(cap->data + 1);
if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap,
(const u8 *)params->eht_cap,
cap->datalen - 1))
return -EINVAL;
}
cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len);
if (cap) {
if (!cap->datalen)
return -EINVAL;
params->eht_oper = (void *)(cap->data + 1);
if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper,
cap->datalen - 1))
return -EINVAL;
}
return 0;
}
static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
@ -5873,7 +5893,9 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
goto out_unlock;
}
nl80211_calculate_ap_params(params);
err = nl80211_calculate_ap_params(params);
if (err)
goto out_unlock;
if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS])
params->flags = nla_get_u32(