From patchwork Mon May 19 19:53:19 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antonio Quartulli X-Patchwork-Id: 4044 Return-Path: Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=178.209.62.157; helo=s3.neomailbox.net; envelope-from=antonio@meshcoding.com; receiver=b.a.t.m.a.n@lists.open-mesh.org Received: from s3.neomailbox.net (s3.neomailbox.net [178.209.62.157]) by open-mesh.org (Postfix) with ESMTPS id 5068B600B67 for ; Mon, 19 May 2014 21:54:31 +0200 (CEST) From: Antonio Quartulli To: Johannes Berg Date: Mon, 19 May 2014 21:53:19 +0200 Message-Id: <1400529201-31500-2-git-send-email-antonio@meshcoding.com> In-Reply-To: <1400529201-31500-1-git-send-email-antonio@meshcoding.com> References: <1400529201-31500-1-git-send-email-antonio@meshcoding.com> Cc: devel@lists.open80211s.org, b.a.t.m.a.n@lists.open-mesh.org, linux-wireless@vger.kernel.org, Antonio Quartulli Subject: [B.A.T.M.A.N.] [PATCHv4 1/3] cfg80211: export expected throughput through get_station() X-BeenThere: b.a.t.m.a.n@lists.open-mesh.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: The list for a Better Approach To Mobile Ad-hoc Networking List-Id: The list for a Better Approach To Mobile Ad-hoc Networking List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 May 2014 19:54:32 -0000 From: Antonio Quartulli Users may need information about the expected throughput towards a given peer. This value is supposed to consider the size overhead generated by the 802.11 header. This value is exported in kbps through the get_station() API by including it into the station_info object. Moreover, it is sent to user space when replying to the nl80211 GET_STATION command. This information will be useful to the batman-adv module which will use it for its new metric computation. Signed-off-by: Antonio Quartulli --- include/net/cfg80211.h | 62 ++++++++++++++++++++++++-------------------- include/uapi/linux/nl80211.h | 3 +++ net/wireless/nl80211.c | 4 +++ 3 files changed, 41 insertions(+), 28 deletions(-) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index fe4fa28..857d647 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -873,36 +873,38 @@ int cfg80211_check_station_change(struct wiphy *wiphy, * @STATION_INFO_NONPEER_PM: @nonpeer_pm filled * @STATION_INFO_CHAIN_SIGNAL: @chain_signal filled * @STATION_INFO_CHAIN_SIGNAL_AVG: @chain_signal_avg filled + * @STATION_INFO_EXPECTED_THROUGHPUT: @expected_throughput filled */ enum station_info_flags { - STATION_INFO_INACTIVE_TIME = 1<<0, - STATION_INFO_RX_BYTES = 1<<1, - STATION_INFO_TX_BYTES = 1<<2, - STATION_INFO_LLID = 1<<3, - STATION_INFO_PLID = 1<<4, - STATION_INFO_PLINK_STATE = 1<<5, - STATION_INFO_SIGNAL = 1<<6, - STATION_INFO_TX_BITRATE = 1<<7, - STATION_INFO_RX_PACKETS = 1<<8, - STATION_INFO_TX_PACKETS = 1<<9, - STATION_INFO_TX_RETRIES = 1<<10, - STATION_INFO_TX_FAILED = 1<<11, - STATION_INFO_RX_DROP_MISC = 1<<12, - STATION_INFO_SIGNAL_AVG = 1<<13, - STATION_INFO_RX_BITRATE = 1<<14, - STATION_INFO_BSS_PARAM = 1<<15, - STATION_INFO_CONNECTED_TIME = 1<<16, - STATION_INFO_ASSOC_REQ_IES = 1<<17, - STATION_INFO_STA_FLAGS = 1<<18, - STATION_INFO_BEACON_LOSS_COUNT = 1<<19, - STATION_INFO_T_OFFSET = 1<<20, - 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, - STATION_INFO_CHAIN_SIGNAL = 1<<26, - STATION_INFO_CHAIN_SIGNAL_AVG = 1<<27, + STATION_INFO_INACTIVE_TIME = BIT(0), + STATION_INFO_RX_BYTES = BIT(1), + STATION_INFO_TX_BYTES = BIT(2), + STATION_INFO_LLID = BIT(3), + STATION_INFO_PLID = BIT(4), + STATION_INFO_PLINK_STATE = BIT(5), + STATION_INFO_SIGNAL = BIT(6), + STATION_INFO_TX_BITRATE = BIT(7), + STATION_INFO_RX_PACKETS = BIT(8), + STATION_INFO_TX_PACKETS = BIT(9), + STATION_INFO_TX_RETRIES = BIT(10), + STATION_INFO_TX_FAILED = BIT(11), + STATION_INFO_RX_DROP_MISC = BIT(12), + STATION_INFO_SIGNAL_AVG = BIT(13), + STATION_INFO_RX_BITRATE = BIT(14), + STATION_INFO_BSS_PARAM = BIT(15), + STATION_INFO_CONNECTED_TIME = BIT(16), + STATION_INFO_ASSOC_REQ_IES = BIT(17), + STATION_INFO_STA_FLAGS = BIT(18), + STATION_INFO_BEACON_LOSS_COUNT = BIT(19), + STATION_INFO_T_OFFSET = BIT(20), + STATION_INFO_LOCAL_PM = BIT(21), + STATION_INFO_PEER_PM = BIT(22), + STATION_INFO_NONPEER_PM = BIT(23), + STATION_INFO_RX_BYTES64 = BIT(24), + STATION_INFO_TX_BYTES64 = BIT(25), + STATION_INFO_CHAIN_SIGNAL = BIT(26), + STATION_INFO_CHAIN_SIGNAL_AVG = BIT(27), + STATION_INFO_EXPECTED_THROUGHPUT = BIT(28), }; /** @@ -1024,6 +1026,8 @@ struct sta_bss_parameters { * @local_pm: local mesh STA power save mode * @peer_pm: peer mesh STA power save mode * @nonpeer_pm: non-peer mesh STA power save mode + * @expected_throughput: expected throughput in kbps (including 802.11 headers) + * towards this station. */ struct station_info { u32 filled; @@ -1062,6 +1066,8 @@ struct station_info { enum nl80211_mesh_power_mode peer_pm; enum nl80211_mesh_power_mode nonpeer_pm; + u32 expected_throughput; + /* * Note: Add a new enum station_info_flags value for each new field and * use it to check which fields are initialized. diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h index 0cfa827..fb0efa1 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -2199,6 +2199,8 @@ enum nl80211_sta_bss_param { * Contains a nested array of signal strength attributes (u8, dBm) * @NL80211_STA_INFO_CHAIN_SIGNAL_AVG: per-chain signal strength average * Same format as NL80211_STA_INFO_CHAIN_SIGNAL. + * @NL80211_STA_EXPECTED_THROUGHPUT: expected throughput considering also the + * 802.11 header (u32, kbps) * @__NL80211_STA_INFO_AFTER_LAST: internal * @NL80211_STA_INFO_MAX: highest possible station info attribute */ @@ -2230,6 +2232,7 @@ enum nl80211_sta_info { NL80211_STA_INFO_TX_BYTES64, NL80211_STA_INFO_CHAIN_SIGNAL, NL80211_STA_INFO_CHAIN_SIGNAL_AVG, + NL80211_STA_INFO_EXPECTED_THROUGHPUT, /* keep last */ __NL80211_STA_INFO_AFTER_LAST, diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 49adf58..62bdb1a 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -3650,6 +3650,10 @@ static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq, nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED, sinfo->tx_failed)) goto nla_put_failure; + if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) && + nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT, + sinfo->expected_throughput)) + goto nla_put_failure; if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) && nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS, sinfo->beacon_loss_count))