diff options
| -rw-r--r-- | include/linux/nl80211.h | 28 | ||||
| -rw-r--r-- | include/net/cfg80211.h | 35 | ||||
| -rw-r--r-- | net/wireless/nl80211.c | 82 |
3 files changed, 144 insertions, 1 deletions
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 85e2d7d1f9e..9fecf902419 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -157,6 +157,9 @@ enum nl80211_commands { * restriction (at most %NL80211_MAX_SUPP_RATES). * @NL80211_ATTR_STA_VLAN: interface index of VLAN interface to move station * to, or the AP interface the station was originally added to to. + * @NL80211_ATTR_STA_STATS: statistics for a station, part of station info + * given for %NL80211_CMD_GET_STATION, nested attribute containing + * info as possible, see &enum nl80211_sta_stats. * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use @@ -190,6 +193,7 @@ enum nl80211_attrs { NL80211_ATTR_STA_LISTEN_INTERVAL, NL80211_ATTR_STA_SUPPORTED_RATES, NL80211_ATTR_STA_VLAN, + NL80211_ATTR_STA_STATS, /* add attributes here, update the policy in nl80211.c */ @@ -252,4 +256,28 @@ enum nl80211_sta_flags { NL80211_STA_FLAG_MAX = __NL80211_STA_FLAG_AFTER_LAST - 1 }; +/** + * enum nl80211_sta_stats - station statistics + * + * These attribute types are used with %NL80211_ATTR_STA_STATS + * when getting information about a station. + * + * @__NL80211_STA_STAT_INVALID: attribute number 0 is reserved + * @NL80211_STA_STAT_INACTIVE_TIME: time since last activity (u32, msecs) + * @NL80211_STA_STAT_RX_BYTES: total received bytes (u32, from this station) + * @NL80211_STA_STAT_TX_BYTES: total transmitted bytes (u32, to this station) + * @__NL80211_STA_STAT_AFTER_LAST: internal + * @NL80211_STA_STAT_MAX: highest possible station stats attribute + */ +enum nl80211_sta_stats { + __NL80211_STA_STAT_INVALID, + NL80211_STA_STAT_INACTIVE_TIME, + NL80211_STA_STAT_RX_BYTES, + NL80211_STA_STAT_TX_BYTES, + + /* keep last */ + __NL80211_STA_STAT_AFTER_LAST, + NL80211_STA_STAT_MAX = __NL80211_STA_STAT_AFTER_LAST - 1 +}; + #endif /* __LINUX_NL80211_H */ diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index df650935e26..bcc480b8892 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -130,6 +130,39 @@ struct station_parameters { u8 supported_rates_len; }; +/** + * enum station_stats_flags - station statistics flags + * + * Used by the driver to indicate which info in &struct station_stats + * it has filled in during get_station(). + * + * @STATION_STAT_INACTIVE_TIME: @inactive_time filled + * @STATION_STAT_RX_BYTES: @rx_bytes filled + * @STATION_STAT_TX_BYTES: @tx_bytes filled + */ +enum station_stats_flags { + STATION_STAT_INACTIVE_TIME = 1<<0, + STATION_STAT_RX_BYTES = 1<<1, + STATION_STAT_TX_BYTES = 1<<2, +}; + +/** + * struct station_stats - station statistics + * + * Station information filled by driver for get_station(). + * + * @filled: bitflag of flags from &enum station_stats_flags + * @inactive_time: time since last station activity (tx/rx) in milliseconds + * @rx_bytes: bytes received from this station + * @tx_bytes: bytes transmitted to this station + */ +struct station_stats { + u32 filled; + u32 inactive_time; + u32 rx_bytes; + u32 tx_bytes; +}; + /* from net/wireless.h */ struct wiphy; @@ -210,6 +243,8 @@ struct cfg80211_ops { u8 *mac); int (*change_station)(struct wiphy *wiphy, struct net_device *dev, u8 *mac, struct station_parameters *params); + int (*get_station)(struct wiphy *wiphy, struct net_device *dev, + u8 *mac, struct station_stats *stats); }; #endif /* __NET_CFG80211_H */ diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 431835126e8..e3a214f63f9 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -750,9 +750,89 @@ static int parse_station_flags(struct nlattr *nla, u32 *staflags) return 0; } +static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq, + int flags, struct net_device *dev, + u8 *mac_addr, struct station_stats *stats) +{ + void *hdr; + struct nlattr *statsattr; + + hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); + if (!hdr) + return -1; + + NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); + NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); + + statsattr = nla_nest_start(msg, NL80211_ATTR_STA_STATS); + if (!statsattr) + goto nla_put_failure; + if (stats->filled & STATION_STAT_INACTIVE_TIME) + NLA_PUT_U32(msg, NL80211_STA_STAT_INACTIVE_TIME, + stats->inactive_time); + if (stats->filled & STATION_STAT_RX_BYTES) + NLA_PUT_U32(msg, NL80211_STA_STAT_RX_BYTES, + stats->rx_bytes); + if (stats->filled & STATION_STAT_TX_BYTES) + NLA_PUT_U32(msg, NL80211_STA_STAT_TX_BYTES, + stats->tx_bytes); + + nla_nest_end(msg, statsattr); + + return genlmsg_end(msg, hdr); + + nla_put_failure: + return genlmsg_cancel(msg, hdr); +} + + static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) { - return -EOPNOTSUPP; + struct cfg80211_registered_device *drv; + int err; + struct net_device *dev; + struct station_stats stats; + struct sk_buff *msg; + u8 *mac_addr = NULL; + + memset(&stats, 0, sizeof(stats)); + + if (!info->attrs[NL80211_ATTR_MAC]) + return -EINVAL; + + mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); + + err = get_drv_dev_by_info_ifindex(info, &drv, &dev); + if (err) + return err; + + if (!drv->ops->get_station) { + err = -EOPNOTSUPP; + goto out; + } + + rtnl_lock(); + err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &stats); + rtnl_unlock(); + + msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); + if (!msg) + goto out; + + if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0, + dev, mac_addr, &stats) < 0) + goto out_free; + + err = genlmsg_unicast(msg, info->snd_pid); + goto out; + + out_free: + nlmsg_free(msg); + + out: + cfg80211_put_dev(drv); + dev_put(dev); + return err; } /* |