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-rw-r--r--include/net/cfg80211.h24
-rw-r--r--include/uapi/linux/nl80211.h8
-rw-r--r--net/wireless/nl80211.c40
-rw-r--r--net/wireless/rdev-ops.h12
-rw-r--r--net/wireless/trace.h18
5 files changed, 102 insertions, 0 deletions
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 41ae3f500957..c575583b50fb 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2051,6 +2051,18 @@ struct cfg80211_connect_params {
};
/**
+ * enum cfg80211_connect_params_changed - Connection parameters being updated
+ *
+ * This enum provides information of all connect parameters that
+ * have to be updated as part of update_connect_params() call.
+ *
+ * @UPDATE_ASSOC_IES: Indicates whether association request IEs are updated
+ */
+enum cfg80211_connect_params_changed {
+ UPDATE_ASSOC_IES = BIT(0),
+};
+
+/**
* enum wiphy_params_flags - set_wiphy_params bitfield values
* @WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed
* @WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed
@@ -2571,6 +2583,14 @@ struct cfg80211_nan_func {
* cases, the result of roaming is indicated with a call to
* cfg80211_roamed() or cfg80211_roamed_bss().
* (invoked with the wireless_dev mutex held)
+ * @update_connect_params: Update the connect parameters while connected to a
+ * BSS. The updated parameters can be used by driver/firmware for
+ * subsequent BSS selection (roaming) decisions and to form the
+ * Authentication/(Re)Association Request frames. This call does not
+ * request an immediate disassociation or reassociation with the current
+ * BSS, i.e., this impacts only subsequent (re)associations. The bits in
+ * changed are defined in &enum cfg80211_connect_params_changed.
+ * (invoked with the wireless_dev mutex held)
* @disconnect: Disconnect from the BSS/ESS or stop connection attempts if
* connection is in progress. Once done, call cfg80211_disconnected() in
* case connection was already established (invoked with the
@@ -2858,6 +2878,10 @@ struct cfg80211_ops {
int (*connect)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_connect_params *sme);
+ int (*update_connect_params)(struct wiphy *wiphy,
+ struct net_device *dev,
+ struct cfg80211_connect_params *sme,
+ u32 changed);
int (*disconnect)(struct wiphy *wiphy, struct net_device *dev,
u16 reason_code);
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index e21d23dcb588..259c9c77fdc1 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -888,6 +888,12 @@
* This will contain a %NL80211_ATTR_NAN_MATCH nested attribute and
* %NL80211_ATTR_COOKIE.
*
+ * @NL80211_CMD_UPDATE_CONNECT_PARAMS: Update one or more connect parameters
+ * for subsequent roaming cases if the driver or firmware uses internal
+ * BSS selection. This command can be issued only while connected and it
+ * does not result in a change for the current association. Currently,
+ * only the %NL80211_ATTR_IE data is used and updated with this command.
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -1085,6 +1091,8 @@ enum nl80211_commands {
NL80211_CMD_SET_MULTICAST_TO_UNICAST,
+ NL80211_CMD_UPDATE_CONNECT_PARAMS,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 0c9d00c9cef1..bb30fa1969f9 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -1661,6 +1661,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
CMD(add_tx_ts, ADD_TX_TS);
CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
+ CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
}
#undef CMD
@@ -8779,6 +8780,37 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
return err;
}
+static int nl80211_update_connect_params(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct cfg80211_connect_params connect = {};
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+ u32 changed = 0;
+ int ret;
+
+ if (!rdev->ops->update_connect_params)
+ return -EOPNOTSUPP;
+
+ if (info->attrs[NL80211_ATTR_IE]) {
+ if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
+ return -EINVAL;
+ connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
+ connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+ changed |= UPDATE_ASSOC_IES;
+ }
+
+ wdev_lock(dev->ieee80211_ptr);
+ if (!wdev->current_bss)
+ ret = -ENOLINK;
+ else
+ ret = rdev_update_connect_params(rdev, dev, &connect, changed);
+ wdev_unlock(dev->ieee80211_ptr);
+
+ return ret;
+}
+
static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
@@ -12232,6 +12264,14 @@ static const struct genl_ops nl80211_ops[] = {
NL80211_FLAG_NEED_RTNL,
},
{
+ .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
+ .doit = nl80211_update_connect_params,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+ NL80211_FLAG_NEED_RTNL,
+ },
+ {
.cmd = NL80211_CMD_DISCONNECT,
.doit = nl80211_disconnect,
.policy = nl80211_policy,
diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h
index e9ecf23e7942..2f425075ada8 100644
--- a/net/wireless/rdev-ops.h
+++ b/net/wireless/rdev-ops.h
@@ -490,6 +490,18 @@ static inline int rdev_connect(struct cfg80211_registered_device *rdev,
return ret;
}
+static inline int
+rdev_update_connect_params(struct cfg80211_registered_device *rdev,
+ struct net_device *dev,
+ struct cfg80211_connect_params *sme, u32 changed)
+{
+ int ret;
+ trace_rdev_update_connect_params(&rdev->wiphy, dev, sme, changed);
+ ret = rdev->ops->update_connect_params(&rdev->wiphy, dev, sme, changed);
+ trace_rdev_return_int(&rdev->wiphy, ret);
+ return ret;
+}
+
static inline int rdev_disconnect(struct cfg80211_registered_device *rdev,
struct net_device *dev, u16 reason_code)
{
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index 25f8318b3e0b..ea1b47e04fa4 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -1281,6 +1281,24 @@ TRACE_EVENT(rdev_connect,
__entry->wpa_versions, __entry->flags, MAC_PR_ARG(prev_bssid))
);
+TRACE_EVENT(rdev_update_connect_params,
+ TP_PROTO(struct wiphy *wiphy, struct net_device *netdev,
+ struct cfg80211_connect_params *sme, u32 changed),
+ TP_ARGS(wiphy, netdev, sme, changed),
+ TP_STRUCT__entry(
+ WIPHY_ENTRY
+ NETDEV_ENTRY
+ __field(u32, changed)
+ ),
+ TP_fast_assign(
+ WIPHY_ASSIGN;
+ NETDEV_ASSIGN;
+ __entry->changed = changed;
+ ),
+ TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT ", parameters changed: %u",
+ WIPHY_PR_ARG, NETDEV_PR_ARG, __entry->changed)
+);
+
TRACE_EVENT(rdev_set_cqm_rssi_config,
TP_PROTO(struct wiphy *wiphy,
struct net_device *netdev, s32 rssi_thold,
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-26 14:22:50 +0000