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cfg80211: allow including station info in delete event
When a station is removed, its statistics may be interesting to userspace, for example for further aggregation of statistics of all stations that ever connected to an AP. Introduce a new cfg80211_del_sta_sinfo() function (and make the cfg80211_del_sta() a static inline calling it) to allow passing a struct station_info along with this, and send the data in the nl80211 event message. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
parent
052536abfa
commit
cf5ead822d
2 changed files with 31 additions and 23 deletions
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@ -4591,6 +4591,16 @@ void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
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void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
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struct station_info *sinfo, gfp_t gfp);
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/**
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* cfg80211_del_sta_sinfo - notify userspace about deletion of a station
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* @dev: the netdev
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* @mac_addr: the station's address
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* @sinfo: the station information/statistics
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* @gfp: allocation flags
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*/
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void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
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struct station_info *sinfo, gfp_t gfp);
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/**
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* cfg80211_del_sta - notify userspace about deletion of a station
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*
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@ -4598,7 +4608,11 @@ void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
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* @mac_addr: the station's address
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* @gfp: allocation flags
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*/
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void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp);
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static inline void cfg80211_del_sta(struct net_device *dev,
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const u8 *mac_addr, gfp_t gfp)
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{
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cfg80211_del_sta_sinfo(dev, mac_addr, NULL, gfp);
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}
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/**
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* cfg80211_conn_failed - connection request failed notification
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@ -3650,8 +3650,8 @@ static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
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return true;
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}
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static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
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int flags,
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static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
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u32 seq, int flags,
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struct cfg80211_registered_device *rdev,
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struct net_device *dev,
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const u8 *mac_addr, struct station_info *sinfo)
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@ -3659,7 +3659,7 @@ static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
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void *hdr;
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struct nlattr *sinfoattr, *bss_param;
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hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
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hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
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if (!hdr)
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return -1;
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@ -3854,7 +3854,7 @@ static int nl80211_dump_station(struct sk_buff *skb,
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if (err)
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goto out_err;
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if (nl80211_send_station(skb,
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if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
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NETLINK_CB(cb->skb).portid,
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cb->nlh->nlmsg_seq, NLM_F_MULTI,
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rdev, wdev->netdev, mac_addr,
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@ -3901,7 +3901,8 @@ static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
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if (!msg)
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return -ENOMEM;
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if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
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if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
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info->snd_portid, info->snd_seq, 0,
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rdev, dev, mac_addr, &sinfo) < 0) {
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nlmsg_free(msg);
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return -ENOBUFS;
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@ -11687,7 +11688,7 @@ void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
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if (!msg)
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return;
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if (nl80211_send_station(msg, 0, 0, 0,
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if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
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rdev, dev, mac_addr, sinfo) < 0) {
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nlmsg_free(msg);
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return;
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@ -11698,12 +11699,16 @@ void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
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}
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EXPORT_SYMBOL(cfg80211_new_sta);
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void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
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void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
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struct station_info *sinfo, gfp_t gfp)
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{
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struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
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struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
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struct sk_buff *msg;
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void *hdr;
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struct station_info empty_sinfo = {};
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if (!sinfo)
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sinfo = &empty_sinfo;
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trace_cfg80211_del_sta(dev, mac_addr);
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@ -11711,27 +11716,16 @@ void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
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if (!msg)
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return;
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hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
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if (!hdr) {
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if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
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rdev, dev, mac_addr, sinfo)) {
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nlmsg_free(msg);
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return;
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}
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if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
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nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
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goto nla_put_failure;
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genlmsg_end(msg, hdr);
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genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
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NL80211_MCGRP_MLME, gfp);
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return;
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nla_put_failure:
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genlmsg_cancel(msg, hdr);
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nlmsg_free(msg);
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}
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EXPORT_SYMBOL(cfg80211_del_sta);
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EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
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void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
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enum nl80211_connect_failed_reason reason,
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