This will allow user to configure beacon tx rate (u8) from userspace.
Signed-off-by: Purushottam Kushwaha <pkushwah@xxxxxxxxxxxxxxxx>
---
include/net/cfg80211.h | 25 +++++++++++---------
net/wireless/nl80211.c | 62 +++++++++++++++++++++++++++++++++-----------------
2 files changed, 55 insertions(+), 32 deletions(-)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 9c23f4d3..dd900de 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -676,6 +676,18 @@ struct cfg80211_acl_data {
struct mac_address mac_addrs[];
};
+/*
+ * cfg80211_bitrate_mask - masks for bitrate control
+ */
+struct cfg80211_bitrate_mask {
+ struct {
+ u32 legacy;
+ u8 ht_mcs[IEEE80211_HT_MCS_MASK_LEN];
+ u16 vht_mcs[NL80211_VHT_NSS_MAX];
+ enum nl80211_txrate_gi gi;
+ } control[NUM_NL80211_BANDS];
+};
+
/**
* struct cfg80211_ap_settings - AP configuration
*
@@ -700,6 +712,7 @@ struct cfg80211_acl_data {
* MAC address based access control
* @pbss: If set, start as a PCP instead of AP. Relevant for DMG
* networks.
+ * @beacon_rate: masks for setting user configured beacon tx rate.
*/
struct cfg80211_ap_settings {
struct cfg80211_chan_def chandef;
@@ -719,6 +732,7 @@ struct cfg80211_ap_settings {
bool p2p_opp_ps;
const struct cfg80211_acl_data *acl;
bool pbss;
+ struct cfg80211_bitrate_mask beacon_rate;
};
/**
@@ -2001,17 +2015,6 @@ enum wiphy_params_flags {
WIPHY_PARAM_DYN_ACK = 1 << 5,
};
-/*
- * cfg80211_bitrate_mask - masks for bitrate control
- */
-struct cfg80211_bitrate_mask {
- struct {
- u32 legacy;
- u8 ht_mcs[IEEE80211_HT_MCS_MASK_LEN];
- u16 vht_mcs[NL80211_VHT_NSS_MAX];
- enum nl80211_txrate_gi gi;
- } control[NUM_NL80211_BANDS];
-};
/**
* struct cfg80211_pmksa - PMK Security Association
*
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 46417f9..53e7bf5 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -36,6 +36,8 @@ static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
struct genl_info *info);
static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
struct genl_info *info);
+static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
+ struct cfg80211_bitrate_mask *mask);
/* the netlink family */
static struct genl_family nl80211_fam = {
@@ -3457,6 +3459,11 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
if (err)
return err;
+ if (info->attrs[NL80211_ATTR_TX_RATES]) {
+ err = nl80211_parse_tx_bitrate_mask(info, ¶ms.beacon_rate);
+ if (err)
+ return err;
+ }
/*
* In theory, some of these attributes should be required here
@@ -8696,22 +8703,17 @@ static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
[NL80211_TXRATE_GI] = { .type = NLA_U8 },
};
-static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
- struct genl_info *info)
+static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
+ struct cfg80211_bitrate_mask *mask)
{
struct nlattr *tb[NL80211_TXRATE_MAX + 1];
struct cfg80211_registered_device *rdev = info->user_ptr[0];
- struct cfg80211_bitrate_mask mask;
int rem, i;
- struct net_device *dev = info->user_ptr[1];
struct nlattr *tx_rates;
struct ieee80211_supported_band *sband;
u16 vht_tx_mcs_map;
- if (!rdev->ops->set_bitrate_mask)
- return -EOPNOTSUPP;
-
- memset(&mask, 0, sizeof(mask));
+ memset(mask, 0, sizeof(*mask));
/* Default to all rates enabled */
for (i = 0; i < NUM_NL80211_BANDS; i++) {
sband = rdev->wiphy.bands[i];
@@ -8719,16 +8721,16 @@ static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
if (!sband)
continue;
- mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
- memcpy(mask.control[i].ht_mcs,
+ mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
+ memcpy(mask->control[i].ht_mcs,
sband->ht_cap.mcs.rx_mask,
- sizeof(mask.control[i].ht_mcs));
+ sizeof(mask->control[i].ht_mcs));
if (!sband->vht_cap.vht_supported)
continue;
vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
- vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
+ vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
}
/* if no rates are given set it back to the defaults */
@@ -8754,11 +8756,11 @@ static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
if (err)
return err;
if (tb[NL80211_TXRATE_LEGACY]) {
- mask.control[band].legacy = rateset_to_mask(
+ mask->control[band].legacy = rateset_to_mask(
sband,
nla_data(tb[NL80211_TXRATE_LEGACY]),
nla_len(tb[NL80211_TXRATE_LEGACY]));
- if ((mask.control[band].legacy == 0) &&
+ if ((mask->control[band].legacy == 0) &&
nla_len(tb[NL80211_TXRATE_LEGACY]))
return -EINVAL;
}
@@ -8767,24 +8769,24 @@ static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
sband,
nla_data(tb[NL80211_TXRATE_HT]),
nla_len(tb[NL80211_TXRATE_HT]),
- mask.control[band].ht_mcs))
+ mask->control[band].ht_mcs))
return -EINVAL;
}
if (tb[NL80211_TXRATE_VHT]) {
if (!vht_set_mcs_mask(
sband,
nla_data(tb[NL80211_TXRATE_VHT]),
- mask.control[band].vht_mcs))
+ mask->control[band].vht_mcs))
return -EINVAL;
}
if (tb[NL80211_TXRATE_GI]) {
- mask.control[band].gi =
+ mask->control[band].gi =
nla_get_u8(tb[NL80211_TXRATE_GI]);
- if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
+ if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
return -EINVAL;
}
- if (mask.control[band].legacy == 0) {
+ if (mask->control[band].legacy == 0) {
/* don't allow empty legacy rates if HT or VHT
* are not even supported.
*/
@@ -8793,11 +8795,11 @@ static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
return -EINVAL;
for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
- if (mask.control[band].ht_mcs[i])
+ if (mask->control[band].ht_mcs[i])
goto out;
for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
- if (mask.control[band].vht_mcs[i])
+ if (mask->control[band].vht_mcs[i])
goto out;
/* legacy and mcs rates may not be both empty */
@@ -8806,6 +8808,24 @@ static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
}
out:
+ return 0;
+}
+
+static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct cfg80211_bitrate_mask mask;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
+ int err;
+
+ if (!rdev->ops->set_bitrate_mask)
+ return -EOPNOTSUPP;
+
+ err = nl80211_parse_tx_bitrate_mask(info, &mask);
+ if (err)
+ return err;
+
return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
}
--
1.9.1
--
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