This function emits NL80211_CMD_NEW_INTERFACE or
NL80211_CMD_DEL_INTERFACE events. This is meant to be used by the core
to notify userspace applications such as wpa_supplicant when a netdev
related to a wireless device has been added or removed.
---
net/wireless/nl80211.c | 28 ++++++++++++++++++++++++++++
net/wireless/nl80211.h | 3 +++
2 files changed, 31 insertions(+)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index f39fd4d..da03e17 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -11855,6 +11855,34 @@ void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
NL80211_MCGRP_CONFIG, GFP_KERNEL);
}
+void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
+ struct wireless_dev *wdev,
+ enum nl80211_commands cmd)
+{
+ struct sk_buff *msg;
+ bool removal;
+
+ WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
+ cmd != NL80211_CMD_DEL_INTERFACE);
+
+ if (cmd == NL80211_CMD_DEL_INTERFACE)
+ removal = true;
+ else
+ removal = false;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, removal) < 0) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
+ NL80211_MCGRP_CONFIG, GFP_KERNEL);
+}
+
static int nl80211_add_scan_req(struct sk_buff *msg,
struct cfg80211_registered_device *rdev)
{
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index a63f402..6f6b73c 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -7,6 +7,9 @@ int nl80211_init(void);
void nl80211_exit(void);
void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
enum nl80211_commands cmd);
+void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
+ struct wireless_dev *wdev,
+ enum nl80211_commands cmd);
void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev);
struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
--
2.7.3
--
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