cfg80211: add a field for the bitrate of the last rx data packet from a station

Also fix a typo in the STATION_INFO_TX_BITRATE description

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 37 insertions, 19 deletions

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 864ddfbeff2..4ebce4284e9 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -1968,13 +1968,41 @@ static int parse_station_flags(struct genl_info *info,
         return 0;
 }
 
+static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
+                                 int attr)
+{
+        struct nlattr *rate;
+        u16 bitrate;
+
+        rate = nla_nest_start(msg, attr);
+        if (!rate)
+                goto nla_put_failure;
+
+        /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
+        bitrate = cfg80211_calculate_bitrate(info);
+        if (bitrate > 0)
+                NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
+
+        if (info->flags & RATE_INFO_FLAGS_MCS)
+                NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
+        if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
+                NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
+        if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
+                NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
+
+        nla_nest_end(msg, rate);
+        return true;
+
+nla_put_failure:
+        return false;
+}
+
 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
                                 int flags, struct net_device *dev,
                                 const u8 *mac_addr, struct station_info *sinfo)
 {
         void *hdr;
-        struct nlattr *sinfoattr, *txrate;
-        u16 bitrate;
+        struct nlattr *sinfoattr;
 
         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
         if (!hdr)
@@ -2013,24 +2041,14 @@ static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
                 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
                            sinfo->signal_avg);
         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
-                txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
-                if (!txrate)
+                if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
+                                          NL80211_STA_INFO_TX_BITRATE))
+                        goto nla_put_failure;
+        }
+        if (sinfo->filled & STATION_INFO_RX_BITRATE) {
+                if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
+                                          NL80211_STA_INFO_RX_BITRATE))
                         goto nla_put_failure;
-
-                /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
-                bitrate = cfg80211_calculate_bitrate(&sinfo->txrate);
-                if (bitrate > 0)
-                        NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
-
-                if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
-                        NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
-                                    sinfo->txrate.mcs);
-                if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
-                        NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
-                if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
-                        NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
-
-                nla_nest_end(msg, txrate);
         }
         if (sinfo->filled & STATION_INFO_RX_PACKETS)
                 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,