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authorJohannes Berg <johannes.berg@intel.com>2018-09-10 14:29:12 +0300
committerJohannes Berg <johannes.berg@intel.com>2018-11-09 13:20:13 +0300
commit9bb7e0f24e7e7d00daa1219b14539e2e602649b2 (patch)
treeba16695740cec99cd4a4af3198cf791b7ca81b70 /net/wireless/nl80211.h
parent801f87469ee8d97af5997ef52188bb0e1908b110 (diff)
downloadlinux-9bb7e0f24e7e7d00daa1219b14539e2e602649b2.tar.xz
cfg80211: add peer measurement with FTM initiator API
Add a new "peer measurement" API, that can be used to measure certain things related to a peer. Right now, only implement FTM (flight time measurement) over it, but the idea is that it'll be extensible to also support measuring the necessary things to calculate e.g. angle-of-arrival for WiGig. The API is structured to have a generic list of peers and channels to measure with/on, and then for each of those a set of measurements (again, only FTM right now) to perform. Results are sent to the requesting socket, including a final complete message. Closing the controlling netlink socket will abort a running measurement. v3: - add a bit to report "final" for partial results - remove list keeping etc. and just unicast out the results to the requester (big code reduction ...) - also send complete message unicast, and as a result remove the multicast group - separate out struct cfg80211_pmsr_ftm_request_peer from struct cfg80211_pmsr_request_peer - document timeout == 0 if no timeout - disallow setting timeout nl80211 attribute to 0, must not include attribute for no timeout - make MAC address randomization optional - change num bursts exponent default to 0 (1 burst, rather rather than the old default of 15==don't care) v4: - clarify NL80211_ATTR_TIMEOUT documentation v5: - remove unnecessary nl80211 multicast/family changes - remove partial results bit/flag, final is sufficient - add max_bursts_exponent, max_ftms_per_burst to capability - rename "frames per burst" -> "FTMs per burst" v6: - rename cfg80211_pmsr_free_wdev() to cfg80211_pmsr_wdev_down() and call it in leave, so the device can't go down with any pending measurements v7: - wording fixes (Lior) - fix ftm.max_bursts_exponent to allow having the limit of 0 (Lior) v8: - copyright statements - minor coding style fixes - fix error path leak Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/nl80211.h')
-rw-r--r--net/wireless/nl80211.h32
1 files changed, 32 insertions, 0 deletions
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index 79e47fe60c35..531c82dcba6b 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -1,4 +1,8 @@
/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Portions of this file
+ * Copyright (C) 2018 Intel Corporation
+ */
#ifndef __NET_WIRELESS_NL80211_H
#define __NET_WIRELESS_NL80211_H
@@ -6,6 +10,30 @@
int nl80211_init(void);
void nl80211_exit(void);
+
+extern const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
+
+void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
+ int flags, u8 cmd);
+bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
+ int attr);
+
+static inline u64 wdev_id(struct wireless_dev *wdev)
+{
+ return (u64)wdev->identifier |
+ ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
+}
+
+int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
+ struct cfg80211_registered_device **rdev,
+ struct wireless_dev **wdev);
+
+int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
+ struct genl_info *info,
+ struct cfg80211_chan_def *chandef);
+int nl80211_parse_random_mac(struct nlattr **attrs,
+ u8 *mac_addr, u8 *mac_addr_mask);
+
void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
enum nl80211_commands cmd);
void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
@@ -95,4 +123,8 @@ void nl80211_send_ap_stopped(struct wireless_dev *wdev);
void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev);
+/* peer measurement */
+int nl80211_pmsr_start(struct sk_buff *skb, struct genl_info *info);
+int nl80211_pmsr_dump_results(struct sk_buff *skb, struct netlink_callback *cb);
+
#endif /* __NET_WIRELESS_NL80211_H */