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-rw-r--r--include/linux/nl80211.h22
-rw-r--r--include/net/cfg80211.h26
-rw-r--r--net/mac80211/cfg.c82
-rw-r--r--net/mac80211/ieee80211_i.h16
-rw-r--r--net/mac80211/iface.c7
-rw-r--r--net/mac80211/mlme.c52
-rw-r--r--net/wireless/nl80211.c47
7 files changed, 246 insertions, 6 deletions
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 4e7a7986a52..76aae3d8e97 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -133,6 +133,14 @@
* @NL80211_CMD_SET_MESH_PARAMS: Set mesh networking properties for the
* interface identified by %NL80211_ATTR_IFINDEX
*
+ * @NL80211_CMD_SET_MGMT_EXTRA_IE: Set extra IEs for management frames. The
+ * interface is identified with %NL80211_ATTR_IFINDEX and the management
+ * frame subtype with %NL80211_ATTR_MGMT_SUBTYPE. The extra IE data to be
+ * added to the end of the specified management frame is specified with
+ * %NL80211_ATTR_IE. If the command succeeds, the requested data will be
+ * added to all specified management frames generated by
+ * kernel/firmware/driver.
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -178,6 +186,8 @@ enum nl80211_commands {
NL80211_CMD_GET_MESH_PARAMS,
NL80211_CMD_SET_MESH_PARAMS,
+ NL80211_CMD_SET_MGMT_EXTRA_IE,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
@@ -190,6 +200,7 @@ enum nl80211_commands {
* here
*/
#define NL80211_CMD_SET_BSS NL80211_CMD_SET_BSS
+#define NL80211_CMD_SET_MGMT_EXTRA_IE NL80211_CMD_SET_MGMT_EXTRA_IE
/**
* enum nl80211_attrs - nl80211 netlink attributes
@@ -284,6 +295,12 @@ enum nl80211_commands {
* supported interface types, each a flag attribute with the number
* of the interface mode.
*
+ * @NL80211_ATTR_MGMT_SUBTYPE: Management frame subtype for
+ * %NL80211_CMD_SET_MGMT_EXTRA_IE.
+ *
+ * @NL80211_ATTR_IE: Information element(s) data (used, e.g., with
+ * %NL80211_CMD_SET_MGMT_EXTRA_IE).
+ *
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@@ -348,6 +365,9 @@ enum nl80211_attrs {
NL80211_ATTR_KEY_DEFAULT_MGMT,
+ NL80211_ATTR_MGMT_SUBTYPE,
+ NL80211_ATTR_IE,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@@ -363,6 +383,8 @@ enum nl80211_attrs {
#define NL80211_ATTR_WIPHY_TXQ_PARAMS NL80211_ATTR_WIPHY_TXQ_PARAMS
#define NL80211_ATTR_WIPHY_FREQ NL80211_ATTR_WIPHY_FREQ
#define NL80211_ATTR_WIPHY_CHANNEL_TYPE NL80211_ATTR_WIPHY_CHANNEL_TYPE
+#define NL80211_ATTR_MGMT_SUBTYPE NL80211_ATTR_MGMT_SUBTYPE
+#define NL80211_ATTR_IE NL80211_ATTR_IE
#define NL80211_MAX_SUPP_RATES 32
#define NL80211_MAX_SUPP_REG_RULES 32
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index df78abc496f..c7da88fb15b 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -433,6 +433,26 @@ struct ieee80211_txq_params {
u8 aifs;
};
+/**
+ * struct mgmt_extra_ie_params - Extra management frame IE parameters
+ *
+ * Used to add extra IE(s) into management frames. If the driver cannot add the
+ * requested data into all management frames of the specified subtype that are
+ * generated in kernel or firmware/hardware, it must reject the configuration
+ * call. The IE data buffer is added to the end of the specified management
+ * frame body after all other IEs. This addition is not applied to frames that
+ * are injected through a monitor interface.
+ *
+ * @subtype: Management frame subtype
+ * @ies: IE data buffer or %NULL to remove previous data
+ * @ies_len: Length of @ies in octets
+ */
+struct mgmt_extra_ie_params {
+ u8 subtype;
+ u8 *ies;
+ int ies_len;
+};
+
/* from net/wireless.h */
struct wiphy;
@@ -501,6 +521,8 @@ struct ieee80211_channel;
* @set_txq_params: Set TX queue parameters
*
* @set_channel: Set channel
+ *
+ * @set_mgmt_extra_ie: Set extra IE data for management frames
*/
struct cfg80211_ops {
int (*add_virtual_intf)(struct wiphy *wiphy, char *name,
@@ -571,6 +593,10 @@ struct cfg80211_ops {
int (*set_channel)(struct wiphy *wiphy,
struct ieee80211_channel *chan,
enum nl80211_channel_type channel_type);
+
+ int (*set_mgmt_extra_ie)(struct wiphy *wiphy,
+ struct net_device *dev,
+ struct mgmt_extra_ie_params *params);
};
/* temporary wext handlers */
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 72c10691543..d1ac3ab2c51 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1175,6 +1175,87 @@ static int ieee80211_set_channel(struct wiphy *wiphy,
return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
}
+static int set_mgmt_extra_ie_sta(struct ieee80211_if_sta *ifsta, u8 subtype,
+ u8 *ies, size_t ies_len)
+{
+ switch (subtype) {
+ case IEEE80211_STYPE_PROBE_REQ >> 4:
+ kfree(ifsta->ie_probereq);
+ ifsta->ie_probereq = ies;
+ ifsta->ie_probereq_len = ies_len;
+ return 0;
+ case IEEE80211_STYPE_PROBE_RESP >> 4:
+ kfree(ifsta->ie_proberesp);
+ ifsta->ie_proberesp = ies;
+ ifsta->ie_proberesp_len = ies_len;
+ return 0;
+ case IEEE80211_STYPE_AUTH >> 4:
+ kfree(ifsta->ie_auth);
+ ifsta->ie_auth = ies;
+ ifsta->ie_auth_len = ies_len;
+ return 0;
+ case IEEE80211_STYPE_ASSOC_REQ >> 4:
+ kfree(ifsta->ie_assocreq);
+ ifsta->ie_assocreq = ies;
+ ifsta->ie_assocreq_len = ies_len;
+ return 0;
+ case IEEE80211_STYPE_REASSOC_REQ >> 4:
+ kfree(ifsta->ie_reassocreq);
+ ifsta->ie_reassocreq = ies;
+ ifsta->ie_reassocreq_len = ies_len;
+ return 0;
+ case IEEE80211_STYPE_DEAUTH >> 4:
+ kfree(ifsta->ie_deauth);
+ ifsta->ie_deauth = ies;
+ ifsta->ie_deauth_len = ies_len;
+ return 0;
+ case IEEE80211_STYPE_DISASSOC >> 4:
+ kfree(ifsta->ie_disassoc);
+ ifsta->ie_disassoc = ies;
+ ifsta->ie_disassoc_len = ies_len;
+ return 0;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+static int ieee80211_set_mgmt_extra_ie(struct wiphy *wiphy,
+ struct net_device *dev,
+ struct mgmt_extra_ie_params *params)
+{
+ struct ieee80211_sub_if_data *sdata;
+ u8 *ies;
+ size_t ies_len;
+ int ret = -EOPNOTSUPP;
+
+ if (params->ies) {
+ ies = kmemdup(params->ies, params->ies_len, GFP_KERNEL);
+ if (ies == NULL)
+ return -ENOMEM;
+ ies_len = params->ies_len;
+ } else {
+ ies = NULL;
+ ies_len = 0;
+ }
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_ADHOC:
+ ret = set_mgmt_extra_ie_sta(&sdata->u.sta, params->subtype,
+ ies, ies_len);
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+
+ if (ret)
+ kfree(ies);
+ return ret;
+}
+
struct cfg80211_ops mac80211_config_ops = {
.add_virtual_intf = ieee80211_add_iface,
.del_virtual_intf = ieee80211_del_iface,
@@ -1204,4 +1285,5 @@ struct cfg80211_ops mac80211_config_ops = {
.change_bss = ieee80211_change_bss,
.set_txq_params = ieee80211_set_txq_params,
.set_channel = ieee80211_set_channel,
+ .set_mgmt_extra_ie = ieee80211_set_mgmt_extra_ie,
};
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index c9ffadb55d3..5eafd3affe2 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -331,6 +331,22 @@ struct ieee80211_if_sta {
u32 supp_rates_bits[IEEE80211_NUM_BANDS];
int wmm_last_param_set;
+
+ /* Extra IE data for management frames */
+ u8 *ie_probereq;
+ size_t ie_probereq_len;
+ u8 *ie_proberesp;
+ size_t ie_proberesp_len;
+ u8 *ie_auth;
+ size_t ie_auth_len;
+ u8 *ie_assocreq;
+ size_t ie_assocreq_len;
+ u8 *ie_reassocreq;
+ size_t ie_reassocreq_len;
+ u8 *ie_deauth;
+ size_t ie_deauth_len;
+ u8 *ie_disassoc;
+ size_t ie_disassoc_len;
};
struct ieee80211_if_mesh {
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 5d5a029228b..8dc2c2188d9 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -632,6 +632,13 @@ static void ieee80211_teardown_sdata(struct net_device *dev)
kfree(sdata->u.sta.assocreq_ies);
kfree(sdata->u.sta.assocresp_ies);
kfree_skb(sdata->u.sta.probe_resp);
+ kfree(sdata->u.sta.ie_probereq);
+ kfree(sdata->u.sta.ie_proberesp);
+ kfree(sdata->u.sta.ie_auth);
+ kfree(sdata->u.sta.ie_assocreq);
+ kfree(sdata->u.sta.ie_reassocreq);
+ kfree(sdata->u.sta.ie_deauth);
+ kfree(sdata->u.sta.ie_disassoc);
break;
case NL80211_IFTYPE_WDS:
case NL80211_IFTYPE_AP_VLAN:
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index f0d42498c25..43da6227b37 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -131,6 +131,12 @@ u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
/* frame sending functions */
+static void add_extra_ies(struct sk_buff *skb, u8 *ies, size_t ies_len)
+{
+ if (ies)
+ memcpy(skb_put(skb, ies_len), ies, ies_len);
+}
+
/* also used by scanning code */
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
u8 *ssid, size_t ssid_len)
@@ -142,7 +148,8 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
u8 *pos, *supp_rates, *esupp_rates = NULL;
int i;
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200);
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 +
+ sdata->u.sta.ie_probereq_len);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
"request\n", sdata->dev->name);
@@ -189,6 +196,9 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
*pos = rate->bitrate / 5;
}
+ add_extra_ies(skb, sdata->u.sta.ie_probereq,
+ sdata->u.sta.ie_probereq_len);
+
ieee80211_tx_skb(sdata, skb, 0);
}
@@ -202,7 +212,8 @@ static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt;
skb = dev_alloc_skb(local->hw.extra_tx_headroom +
- sizeof(*mgmt) + 6 + extra_len);
+ sizeof(*mgmt) + 6 + extra_len +
+ sdata->u.sta.ie_auth_len);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
"frame\n", sdata->dev->name);
@@ -225,6 +236,7 @@ static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
mgmt->u.auth.status_code = cpu_to_le16(0);
if (extra)
memcpy(skb_put(skb, extra_len), extra, extra_len);
+ add_extra_ies(skb, sdata->u.sta.ie_auth, sdata->u.sta.ie_auth_len);
ieee80211_tx_skb(sdata, skb, encrypt);
}
@@ -235,17 +247,26 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata,
struct ieee80211_local *local = sdata->local;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
- u8 *pos, *ies, *ht_ie;
+ u8 *pos, *ies, *ht_ie, *e_ies;
int i, len, count, rates_len, supp_rates_len;
u16 capab;
struct ieee80211_bss *bss;
int wmm = 0;
struct ieee80211_supported_band *sband;
u64 rates = 0;
+ size_t e_ies_len;
+
+ if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) {
+ e_ies = sdata->u.sta.ie_reassocreq;
+ e_ies_len = sdata->u.sta.ie_reassocreq_len;
+ } else {
+ e_ies = sdata->u.sta.ie_assocreq;
+ e_ies_len = sdata->u.sta.ie_assocreq_len;
+ }
skb = dev_alloc_skb(local->hw.extra_tx_headroom +
sizeof(*mgmt) + 200 + ifsta->extra_ie_len +
- ifsta->ssid_len);
+ ifsta->ssid_len + e_ies_len);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for assoc "
"frame\n", sdata->dev->name);
@@ -436,6 +457,8 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata,
memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs));
}
+ add_extra_ies(skb, e_ies, e_ies_len);
+
kfree(ifsta->assocreq_ies);
ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL);
@@ -453,8 +476,19 @@ static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
+ u8 *ies;
+ size_t ies_len;
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
+ if (stype == IEEE80211_STYPE_DEAUTH) {
+ ies = sdata->u.sta.ie_deauth;
+ ies_len = sdata->u.sta.ie_deauth_len;
+ } else {
+ ies = sdata->u.sta.ie_disassoc;
+ ies_len = sdata->u.sta.ie_disassoc_len;
+ }
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) +
+ ies_len);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for "
"deauth/disassoc frame\n", sdata->dev->name);
@@ -472,6 +506,8 @@ static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
/* u.deauth.reason_code == u.disassoc.reason_code */
mgmt->u.deauth.reason_code = cpu_to_le16(reason);
+ add_extra_ies(skb, ies, ies_len);
+
ieee80211_tx_skb(sdata, skb, ifsta->flags & IEEE80211_STA_MFP_ENABLED);
}
@@ -1473,7 +1509,8 @@ static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
struct ieee80211_supported_band *sband;
union iwreq_data wrqu;
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400 +
+ sdata->u.sta.ie_proberesp_len);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
"response\n", sdata->dev->name);
@@ -1556,6 +1593,9 @@ static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
memcpy(pos, &bss->supp_rates[8], rates);
}
+ add_extra_ies(skb, sdata->u.sta.ie_proberesp,
+ sdata->u.sta.ie_proberesp_len);
+
ifsta->probe_resp = skb;
ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 123d3b160fa..09a5d0f1d6d 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -105,6 +105,10 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
[NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
.len = NL80211_HT_CAPABILITY_LEN },
+
+ [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
+ [NL80211_ATTR_IE] = { .type = NLA_BINARY,
+ .len = IEEE80211_MAX_DATA_LEN },
};
/* message building helper */
@@ -2149,6 +2153,43 @@ static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
}
+static int nl80211_set_mgmt_extra_ie(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ struct mgmt_extra_ie_params params;
+
+ memset(&params, 0, sizeof(params));
+
+ if (!info->attrs[NL80211_ATTR_MGMT_SUBTYPE])
+ return -EINVAL;
+ params.subtype = nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
+ if (params.subtype > 15)
+ return -EINVAL; /* FC Subtype field is 4 bits (0..15) */
+
+ if (info->attrs[NL80211_ATTR_IE]) {
+ params.ies = nla_data(info->attrs[NL80211_ATTR_IE]);
+ params.ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+ }
+
+ err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+ if (err)
+ return err;
+
+ if (drv->ops->set_mgmt_extra_ie) {
+ rtnl_lock();
+ err = drv->ops->set_mgmt_extra_ie(&drv->wiphy, dev, &params);
+ rtnl_unlock();
+ } else
+ err = -EOPNOTSUPP;
+
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
static struct genl_ops nl80211_ops[] = {
{
.cmd = NL80211_CMD_GET_WIPHY,
@@ -2310,6 +2351,12 @@ static struct genl_ops nl80211_ops[] = {
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
},
+ {
+ .cmd = NL80211_CMD_SET_MGMT_EXTRA_IE,
+ .doit = nl80211_set_mgmt_extra_ie,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
};
/* multicast groups */
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-18 05:02:34 +0000