Interface implementation to pass DFS pulse events via nl80211.
Includes
* new command NL80211_CMD_SET_DFS_EVENT
* new attributes NL80211_DFSEVENT_ATTR_{FREQ,TS,WIDTH}
* functions to pass DFS pulse events through netlink interface
---
include/linux/nl80211.h | 6 +++++
include/net/cfg80211.h | 6 +++++
net/wireless/core.c | 11 ++++++++++
net/wireless/nl80211.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++-
net/wireless/nl80211.h | 3 ++
5 files changed, 73 insertions(+), 1 deletions(-)
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 821ffb9..ae3f6ae 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -524,6 +524,8 @@ enum nl80211_commands {
/* add new commands above here */
+ NL80211_CMD_SET_DFS_EVENT,
+
/* used to define NL80211_CMD_MAX below */
__NL80211_CMD_AFTER_LAST,
NL80211_CMD_MAX = __NL80211_CMD_AFTER_LAST - 1
@@ -1076,6 +1078,10 @@ enum nl80211_attrs {
/* add attributes here, update the policy in nl80211.c */
+ NL80211_DFSEVENT_ATTR_FREQ,
+ NL80211_DFSEVENT_ATTR_TS,
+ NL80211_DFSEVENT_ATTR_WIDTH,
+
__NL80211_ATTR_AFTER_LAST,
NL80211_ATTR_MAX = __NL80211_ATTR_AFTER_LAST - 1
};
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 679a049..59ced7a 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2715,6 +2715,12 @@ void cfg80211_cqm_rssi_notify(struct net_device *dev,
void cfg80211_cqm_pktloss_notify(struct net_device *dev,
const u8 *peer, u32 num_packets, gfp_t gfp);
+
+/**
+ * DFS radar pulse reporting
+ */
+void ieee80211_add_radar_pulse(struct wiphy *wiphy, u16 freq, u64 ts, u8 width);
+
/* Logging, debugging and troubleshooting/diagnostic helpers. */
/* wiphy_printk helpers, similar to dev_printk */
diff --git a/net/wireless/core.c b/net/wireless/core.c
index fe01de2..4e62d37 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -944,3 +944,14 @@ static void __exit cfg80211_exit(void)
destroy_workqueue(cfg80211_wq);
}
module_exit(cfg80211_exit);
+
+
+/**
+ * DFS
+ */
+
+void ieee80211_add_radar_pulse(struct wiphy *wiphy, u16 freq, u64 ts, u8 width)
+{
+ return nl80211_send_dfs_event(wiphy, freq, ts, width);
+}
+EXPORT_SYMBOL(ieee80211_add_radar_pulse);
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 864ddfb..8e75f40 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -4015,7 +4015,6 @@ __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
skb = nlmsg_new(approxlen + 100, gfp);
if (!skb)
return NULL;
-
hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
if (!hdr) {
kfree_skb(skb);
@@ -6191,3 +6190,50 @@ void nl80211_exit(void)
netlink_unregister_notifier(&nl80211_netlink_notifier);
genl_unregister_family(&nl80211_fam);
}
+
+
+void nl80211_send_dfs_event(struct wiphy *wiphy, u16 freq, u64 ts, u8 width)
+{
+ struct sk_buff *msg;
+ void *hdr;
+ int wiphy_idx = 0;
+
+ if (wiphy == NULL) {
+ printk(KERN_WARNING "nl80211_send_dfs_event: wiphy=0\n");
+ return;
+ }
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
+ if (!msg)
+ return;
+
+ hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_DFS_EVENT);
+ if (!hdr) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ wiphy_idx = get_wiphy_idx(wiphy);
+
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, wiphy_idx);
+ NLA_PUT_U16(msg, NL80211_DFSEVENT_ATTR_FREQ, freq);
+ NLA_PUT_U64(msg, NL80211_DFSEVENT_ATTR_TS, ts);
+ NLA_PUT_U8(msg, NL80211_DFSEVENT_ATTR_WIDTH, width);
+
+ if (genlmsg_end(msg, hdr) < 0) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ rcu_read_lock();
+ genlmsg_multicast_netns(wiphy_net(wiphy), msg, 0,
+ nl80211_regulatory_mcgrp.id, GFP_ATOMIC);
+ rcu_read_unlock();
+
+ return;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ nlmsg_free(msg);
+}
+
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index e3f7fa8..3d3bbc4 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -98,4 +98,7 @@ nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *peer,
u32 num_packets, gfp_t gfp);
+void nl80211_send_dfs_event(struct wiphy *wiphy, u16 freq, u64 ts, u8 width);
+
+
#endif /* __NET_WIRELESS_NL80211_H */
--
1.7.1
--
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