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cfg80211: add checks for beacon rate, extend to mesh

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The previous commit added support for specifying the beacon rate
for AP mode. Add features checks to this, and extend it to also
support the rate configuration for mesh networks. For IBSS it's
not as simple due to joining etc., so that's not yet supported.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2016-09-19 09:44:44 +02:00
parent a7c7fbff6a
commit 8564e38206
3 changed files with 54 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files
net/wireless/nl80211.c
+35 -11
View File
@@ -3569,13 +3569,12 @@ out:
return 0;
}
static int validate_beacon_tx_rate(struct cfg80211_ap_settings *params)
static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
enum nl80211_band band,
struct cfg80211_bitrate_mask *beacon_rate)
{
u32 rate, count_ht, count_vht, i;
enum nl80211_band band;
band = params->chandef.chan->band;
rate = params->beacon_rate.control[band].legacy;
u32 count_ht, count_vht, i;
u32 rate = beacon_rate->control[band].legacy;
/* Allow only one rate */
if (hweight32(rate) > 1)
@@ -3583,9 +3582,9 @@ static int validate_beacon_tx_rate(struct cfg80211_ap_settings *params)
count_ht = 0;
for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
if (hweight8(params->beacon_rate.control[band].ht_mcs[i]) > 1) {
if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
return -EINVAL;
} else if (params->beacon_rate.control[band].ht_mcs[i]) {
} else if (beacon_rate->control[band].ht_mcs[i]) {
count_ht++;
if (count_ht > 1)
return -EINVAL;
@@ -3596,9 +3595,9 @@ static int validate_beacon_tx_rate(struct cfg80211_ap_settings *params)
count_vht = 0;
for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
if (hweight16(params->beacon_rate.control[band].vht_mcs[i]) > 1) {
if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
return -EINVAL;
} else if (params->beacon_rate.control[band].vht_mcs[i]) {
} else if (beacon_rate->control[band].vht_mcs[i]) {
count_vht++;
if (count_vht > 1)
return -EINVAL;
@@ -3610,6 +3609,19 @@ static int validate_beacon_tx_rate(struct cfg80211_ap_settings *params)
if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
return -EINVAL;
if (rate &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
return -EINVAL;
if (count_ht &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_BEACON_RATE_HT))
return -EINVAL;
if (count_vht &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_BEACON_RATE_VHT))
return -EINVAL;
return 0;
}
@@ -3847,7 +3859,8 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
if (err)
return err;
err = validate_beacon_tx_rate(&params);
err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
&params.beacon_rate);
if (err)
return err;
}
@@ -9406,6 +9419,17 @@ static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
return err;
}
if (info->attrs[NL80211_ATTR_TX_RATES]) {
err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
if (err)
return err;
err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
&setup.beacon_rate);
if (err)
return err;
}
return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
}