summaryrefslogtreecommitdiff
path: root/net/wireless/nl80211.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/wireless/nl80211.c')
-rw-r--r--net/wireless/nl80211.c160
1 files changed, 110 insertions, 50 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 999108cd947c..15158a3d64a3 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -223,8 +223,13 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
[NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
.len = 20-1 },
[NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
+
[NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
+ [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
+ [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
+ [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
+
[NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
[NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
[NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
@@ -1360,35 +1365,13 @@ static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
wdev->iftype == NL80211_IFTYPE_P2P_GO;
}
-static bool nl80211_valid_channel_type(struct genl_info *info,
- enum nl80211_channel_type *channel_type)
-{
- enum nl80211_channel_type tmp;
-
- if (!info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
- return false;
-
- tmp = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
- if (tmp != NL80211_CHAN_NO_HT &&
- tmp != NL80211_CHAN_HT20 &&
- tmp != NL80211_CHAN_HT40PLUS &&
- tmp != NL80211_CHAN_HT40MINUS)
- return false;
-
- if (channel_type)
- *channel_type = tmp;
-
- return true;
-}
-
static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
struct genl_info *info,
struct cfg80211_chan_def *chandef)
{
struct ieee80211_sta_ht_cap *ht_cap;
- struct ieee80211_channel *sc;
- u32 control_freq;
- int offs;
+ struct ieee80211_sta_vht_cap *vht_cap;
+ u32 control_freq, width;
if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
return -EINVAL;
@@ -1396,47 +1379,105 @@ static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
- chandef->_type = NL80211_CHAN_NO_HT;
-
- if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
- !nl80211_valid_channel_type(info, &chandef->_type))
- return -EINVAL;
+ chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
+ chandef->center_freq1 = control_freq;
+ chandef->center_freq2 = 0;
/* Primary channel not allowed */
if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
return -EINVAL;
+ if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
+ enum nl80211_channel_type chantype;
+
+ chantype = nla_get_u32(
+ info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
+
+ switch (chantype) {
+ case NL80211_CHAN_NO_HT:
+ case NL80211_CHAN_HT20:
+ case NL80211_CHAN_HT40PLUS:
+ case NL80211_CHAN_HT40MINUS:
+ cfg80211_chandef_create(chandef, chandef->chan,
+ chantype);
+ break;
+ default:
+ return -EINVAL;
+ }
+ } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
+ chandef->width =
+ nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
+ if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
+ chandef->center_freq1 =
+ nla_get_u32(
+ info->attrs[NL80211_ATTR_CENTER_FREQ1]);
+ if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
+ chandef->center_freq2 =
+ nla_get_u32(
+ info->attrs[NL80211_ATTR_CENTER_FREQ2]);
+ }
+
ht_cap = &rdev->wiphy.bands[chandef->chan->band]->ht_cap;
+ vht_cap = &rdev->wiphy.bands[chandef->chan->band]->vht_cap;
- switch (chandef->_type) {
- case NL80211_CHAN_NO_HT:
+ if (!cfg80211_chan_def_valid(chandef))
+ return -EINVAL;
+
+ switch (chandef->width) {
+ case NL80211_CHAN_WIDTH_20:
+ if (!ht_cap->ht_supported)
+ return -EINVAL;
+ case NL80211_CHAN_WIDTH_20_NOHT:
+ width = 20;
break;
- case NL80211_CHAN_HT40MINUS:
- if (chandef->chan->flags & IEEE80211_CHAN_NO_HT40MINUS)
+ case NL80211_CHAN_WIDTH_40:
+ width = 40;
+ /* quick early regulatory check */
+ if (chandef->center_freq1 < control_freq &&
+ chandef->chan->flags & IEEE80211_CHAN_NO_HT40MINUS)
+ return -EINVAL;
+ if (chandef->center_freq1 > control_freq &&
+ chandef->chan->flags & IEEE80211_CHAN_NO_HT40PLUS)
+ return -EINVAL;
+ if (!ht_cap->ht_supported)
return -EINVAL;
- offs = -20;
- /* fall through */
- case NL80211_CHAN_HT40PLUS:
- if (chandef->_type == NL80211_CHAN_HT40PLUS) {
- if (chandef->chan->flags & IEEE80211_CHAN_NO_HT40PLUS)
- return -EINVAL;
- offs = 20;
- }
if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) ||
ht_cap->cap & IEEE80211_HT_CAP_40MHZ_INTOLERANT)
return -EINVAL;
-
- sc = ieee80211_get_channel(&rdev->wiphy,
- chandef->chan->center_freq + offs);
- if (!sc || sc->flags & IEEE80211_CHAN_DISABLED)
+ break;
+ case NL80211_CHAN_WIDTH_80:
+ width = 80;
+ if (!vht_cap->vht_supported)
return -EINVAL;
- /* fall through */
- case NL80211_CHAN_HT20:
- if (!ht_cap->ht_supported)
+ break;
+ case NL80211_CHAN_WIDTH_80P80:
+ width = 80;
+ if (!vht_cap->vht_supported)
+ return -EINVAL;
+ if (!(vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ))
+ return -EINVAL;
+ break;
+ case NL80211_CHAN_WIDTH_160:
+ width = 160;
+ if (!vht_cap->vht_supported)
+ return -EINVAL;
+ if (!(vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ))
return -EINVAL;
break;
+ default:
+ return -EINVAL;
}
+ if (!cfg80211_secondary_chans_ok(&rdev->wiphy, chandef->center_freq1,
+ width, IEEE80211_CHAN_DISABLED))
+ return -EINVAL;
+ if (chandef->center_freq2 &&
+ !cfg80211_secondary_chans_ok(&rdev->wiphy, chandef->center_freq2,
+ width, IEEE80211_CHAN_DISABLED))
+ return -EINVAL;
+
+ /* TODO: missing regulatory check on bandwidth */
+
return 0;
}
@@ -1800,10 +1841,28 @@ static inline u64 wdev_id(struct wireless_dev *wdev)
static int nl80211_send_chandef(struct sk_buff *msg,
struct cfg80211_chan_def *chandef)
{
+ WARN_ON(!cfg80211_chan_def_valid(chandef));
+
if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
chandef->chan->center_freq))
return -ENOBUFS;
- if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, chandef->_type))
+ switch (chandef->width) {
+ case NL80211_CHAN_WIDTH_20_NOHT:
+ case NL80211_CHAN_WIDTH_20:
+ case NL80211_CHAN_WIDTH_40:
+ if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
+ cfg80211_get_chandef_type(chandef)))
+ return -ENOBUFS;
+ break;
+ default:
+ break;
+ }
+ if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
+ return -ENOBUFS;
+ if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
+ return -ENOBUFS;
+ if (chandef->center_freq2 &&
+ nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
return -ENOBUFS;
return 0;
}
@@ -5447,7 +5506,8 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
if (IS_ERR(connkeys))
return PTR_ERR(connkeys);
- if ((ibss.chandef._type != NL80211_CHAN_NO_HT) && no_ht) {
+ if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
+ no_ht) {
kfree(connkeys);
return -EINVAL;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-25 15:05:19 +0300