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mac80211: use ieee80211_bss_get_elem()

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Instead of ieee80211_bss_get_ie(), use the more typed
ieee80211_bss_get_elem().

Link: https://lore.kernel.org/r/20211220113609.56f8e2a70152.Id5a56afb8a4f9b38d10445e5a1874e93e84b5251@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2021-12-20 11:36:10 +01:00
parent 5bc03b28ec
commit b3c1906ed0
1 changed files with 7 additions and 7 deletions
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14
net/mac80211/mlme.c
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@ -4906,7 +4906,7 @@ static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
struct cfg80211_bss *cbss)
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
const u8 *ht_cap_ie, *vht_cap_ie;
const struct element *ht_cap_elem, *vht_cap_elem;
const struct ieee80211_ht_cap *ht_cap;
const struct ieee80211_vht_cap *vht_cap;
u8 chains = 1;
@ -4914,9 +4914,9 @@ static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
return chains;
ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
ht_cap = (void *)(ht_cap_ie + 2);
ht_cap_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_HT_CAPABILITY);
if (ht_cap_elem && ht_cap_elem->datalen >= sizeof(*ht_cap)) {
ht_cap = (void *)ht_cap_elem->data;
chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
/*
* TODO: use "Tx Maximum Number Spatial Streams Supported" and
@ -4927,12 +4927,12 @@ static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
return chains;
vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
vht_cap_elem = ieee80211_bss_get_elem(cbss, WLAN_EID_VHT_CAPABILITY);
if (vht_cap_elem && vht_cap_elem->datalen >= sizeof(*vht_cap)) {
u8 nss;
u16 tx_mcs_map;
vht_cap = (void *)(vht_cap_ie + 2);
vht_cap = (void *)vht_cap_elem->data;
tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
for (nss = 8; nss > 0; nss--) {
if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=