diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2021-09-30 14:11:29 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2021-10-21 18:01:18 +0300 |
| commit | 153e2a11c99b7382597614ddb995618c22aa1b5f (patch) | |
| tree | 22909dc6048b5f91adf874c66852b0fd4e951772 /net/wireless/nl80211.c | |
| parent | ba9d0db9a5ccf96029bd16f08e8afbd63590adbb (diff) | |
| download | linux-153e2a11c99b7382597614ddb995618c22aa1b5f.tar.xz | |
nl80211: use element finding functions
The element finding functions are safer, so use them
instead of the "find_ie" functions.
Link: https://lore.kernel.org/r/20210930131130.b838f139cc8e.I2b641262d3fc6e0d498719bf343fdc1c0833b845@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/nl80211.c')
| -rw-r--r-- | net/wireless/nl80211.c | 44 |
1 files changed, 22 insertions, 22 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 3f37e4d5c5d2..e72efe146d58 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -5338,21 +5338,21 @@ nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev, } static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params, - const u8 *rates) + const struct element *rates) { int i; if (!rates) return; - for (i = 0; i < rates[1]; i++) { - if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY) + for (i = 0; i < rates->datalen; i++) { + if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY) params->ht_required = true; - if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY) + if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY) params->vht_required = true; - if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY) + if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY) params->he_required = true; - if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E) + if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E) params->sae_h2e_required = true; } } @@ -5367,27 +5367,27 @@ static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params) const struct cfg80211_beacon_data *bcn = ¶ms->beacon; size_t ies_len = bcn->tail_len; const u8 *ies = bcn->tail; - const u8 *rates; - const u8 *cap; + const struct element *rates; + const struct element *cap; - rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len); + rates = cfg80211_find_elem(WLAN_EID_SUPP_RATES, ies, ies_len); nl80211_check_ap_rate_selectors(params, rates); - rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len); + rates = cfg80211_find_elem(WLAN_EID_EXT_SUPP_RATES, ies, ies_len); nl80211_check_ap_rate_selectors(params, rates); - cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len); - if (cap && cap[1] >= sizeof(*params->ht_cap)) - params->ht_cap = (void *)(cap + 2); - cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len); - if (cap && cap[1] >= sizeof(*params->vht_cap)) - params->vht_cap = (void *)(cap + 2); - cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len); - if (cap && cap[1] >= sizeof(*params->he_cap) + 1) - params->he_cap = (void *)(cap + 3); - cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len); - if (cap && cap[1] >= sizeof(*params->he_oper) + 1) - params->he_oper = (void *)(cap + 3); + cap = cfg80211_find_elem(WLAN_EID_HT_CAPABILITY, ies, ies_len); + if (cap && cap->datalen >= sizeof(*params->ht_cap)) + params->ht_cap = (void *)cap->data; + cap = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, ies, ies_len); + if (cap && cap->datalen >= sizeof(*params->vht_cap)) + params->vht_cap = (void *)cap->data; + cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len); + if (cap && cap->datalen >= sizeof(*params->he_cap) + 1) + params->he_cap = (void *)(cap->data + 1); + 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); } static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, |