Return-path: Received: from sabertooth02.qualcomm.com ([65.197.215.38]:25944 "EHLO sabertooth02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754001Ab3BDLx0 (ORCPT ); Mon, 4 Feb 2013 06:53:26 -0500 Cc: Vladimir Kondratiev , , "Luis R . Rodriguez" , Kalle Valo From: Vladimir Kondratiev To: "John W . Linville" , Johannes Berg Subject: [PATCH 1/2] wireless: expand per-station byte counters to 64bit Date: Mon, 4 Feb 2013 13:53:11 +0200 Message-ID: <1359978792-7121-2-git-send-email-qca_vkondrat@qca.qualcomm.com> (sfid-20130204_125330_118178_E755F29A) In-Reply-To: <1359978792-7121-1-git-send-email-qca_vkondrat@qca.qualcomm.com> References: <1359978792-7121-1-git-send-email-qca_vkondrat@qca.qualcomm.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: In per-station statistics, present 32bit counters are too small for practical purposes - with gigabit speeds, it get overlapped every few seconds. Expand counters in the struct station_info to be 64-bit. Driver can still fill only 32-bit and indicate in @filled only bits like STATION_INFO_[TR]X_BYTES; in case driver provides full 64-bit counter, it should also set in @filled bit STATION_INFO_[TR]RX_BYTES64 Netlink sends both 32-bit and 64-bit counters, if present, to not break user space. Signed-off-by: Vladimir Kondratiev --- include/net/cfg80211.h | 12 ++++++++---- include/uapi/linux/nl80211.h | 4 ++++ net/wireless/nl80211.c | 10 +++++++++- 3 files changed, 21 insertions(+), 5 deletions(-) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 36e076e..bcb6b70 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -672,8 +672,10 @@ struct station_parameters { * @STATION_INFO_SIGNAL: @signal filled * @STATION_INFO_TX_BITRATE: @txrate fields are filled * (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs) - * @STATION_INFO_RX_PACKETS: @rx_packets filled - * @STATION_INFO_TX_PACKETS: @tx_packets filled + * @STATION_INFO_RX_PACKETS: @rx_packets filled with 32-bit value + * @STATION_INFO_TX_PACKETS: @tx_packets filled with 32-bit value + * @STATION_INFO_RX_PACKETS64: @rx_packets filled with 64-bit value + * @STATION_INFO_TX_PACKETS64: @tx_packets filled with 64-bit value * @STATION_INFO_TX_RETRIES: @tx_retries filled * @STATION_INFO_TX_FAILED: @tx_failed filled * @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled @@ -714,6 +716,8 @@ enum station_info_flags { STATION_INFO_LOCAL_PM = 1<<21, STATION_INFO_PEER_PM = 1<<22, STATION_INFO_NONPEER_PM = 1<<23, + STATION_INFO_RX_BYTES64 = 1<<24, + STATION_INFO_TX_BYTES64 = 1<<25, }; /** @@ -835,8 +839,8 @@ struct station_info { u32 filled; u32 connected_time; u32 inactive_time; - u32 rx_bytes; - u32 tx_bytes; + u64 rx_bytes; + u64 tx_bytes; u16 llid; u16 plid; u8 plink_state; diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h index 5b7dbc1..5c7d54c 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -1851,6 +1851,8 @@ enum nl80211_sta_bss_param { * @NL80211_STA_INFO_INACTIVE_TIME: time since last activity (u32, msecs) * @NL80211_STA_INFO_RX_BYTES: total received bytes (u32, from this station) * @NL80211_STA_INFO_TX_BYTES: total transmitted bytes (u32, to this station) + * @NL80211_STA_INFO_RX_BYTES64: total received bytes (u64, from this station) + * @NL80211_STA_INFO_TX_BYTES64: total transmitted bytes (u64, to this station) * @NL80211_STA_INFO_SIGNAL: signal strength of last received PPDU (u8, dBm) * @NL80211_STA_INFO_TX_BITRATE: current unicast tx rate, nested attribute * containing info as possible, see &enum nl80211_rate_info @@ -1903,6 +1905,8 @@ enum nl80211_sta_info { NL80211_STA_INFO_LOCAL_PM, NL80211_STA_INFO_PEER_PM, NL80211_STA_INFO_NONPEER_PM, + NL80211_STA_INFO_RX_BYTES64, + NL80211_STA_INFO_TX_BYTES64, /* keep last */ __NL80211_STA_INFO_AFTER_LAST, diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index b5978ab..b3a9c8e 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -3059,10 +3059,18 @@ static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq, goto nla_put_failure; if ((sinfo->filled & STATION_INFO_RX_BYTES) && nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, - sinfo->rx_bytes)) + (u32)sinfo->rx_bytes)) goto nla_put_failure; if ((sinfo->filled & STATION_INFO_TX_BYTES) && nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, + (u32)sinfo->tx_bytes)) + goto nla_put_failure; + if ((sinfo->filled & STATION_INFO_RX_BYTES64) && + nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64, + sinfo->rx_bytes)) + goto nla_put_failure; + if ((sinfo->filled & STATION_INFO_TX_BYTES64) && + nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES64, sinfo->tx_bytes)) goto nla_put_failure; if ((sinfo->filled & STATION_INFO_LLID) && -- 1.7.10.4