Return-path: Received: from wolverine01.qualcomm.com ([199.106.114.254]:58716 "EHLO wolverine01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753684Ab2FZCew (ORCPT ); Mon, 25 Jun 2012 22:34:52 -0400 From: Thomas Pedersen To: CC: , , , Thomas Pedersen Subject: [RFC] cfg80211: support TX error rate CQM Date: Mon, 25 Jun 2012 19:34:48 -0700 Message-ID: <1340678088-5353-1-git-send-email-c_tpeder@qca.qualcomm.com> (sfid-20120626_043456_671811_70B4E690) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: Let the user configure serveral TX error conection quality monitoring parameters: % error rate, survey interval, and # of attempted packets. On exceeding the TX failure rate over the given interval, the driver will send a CQM notify event with the actual TX failure rate and packets attempted. Signed-off-by: Thomas Pedersen --- include/linux/nl80211.h | 14 ++++++++ include/net/cfg80211.h | 20 +++++++++++ net/wireless/mlme.c | 13 +++++++ net/wireless/nl80211.c | 81 +++++++++++++++++++++++++++++++++++++++++++++++ net/wireless/nl80211.h | 5 +++ 5 files changed, 133 insertions(+), 0 deletions(-) diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 970afdf..1477c99 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -2517,6 +2517,17 @@ enum nl80211_ps_state { * @NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT: RSSI threshold event * @NL80211_ATTR_CQM_PKT_LOSS_EVENT: a u32 value indicating that this many * consecutive packets were not acknowledged by the peer + * @NL80211_ATTR_CQM_TXE_RATE: TX error rate in %. Minimum % of TX failures + * during the given %NL80211_ATTR_CQM_TXE_INTVL before an + * %NL80211_CMD_NOTIFY_CQM with reported %NL80211_ATTR_CQM_TXE_RATE and + * %NL80211_ATTR_CQM_TXE_PKTS is generated. + * @NL80211_ATTR_CQM_TXE_PKTS: number of TX attempts in a given + * %NL80211_ATTR_CQM_TXE_INTVL before %NL80211_ATTR_CQM_TXE_RATE is + * checked. + * @NL80211_ATTR_CQM_TXE_INTVL: interval in seconds. Specifies the periodic + * interval in which %NL80211_ATTR_CQM_TXE_PKTS and + * %NL80211_ATTR_CQM_TXE_RATE must be satisfied before generating an + * %NL80211_CMD_NOTIFY_CQM. * @__NL80211_ATTR_CQM_AFTER_LAST: internal * @NL80211_ATTR_CQM_MAX: highest key attribute */ @@ -2526,6 +2537,9 @@ enum nl80211_attr_cqm { NL80211_ATTR_CQM_RSSI_HYST, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, NL80211_ATTR_CQM_PKT_LOSS_EVENT, + NL80211_ATTR_CQM_TXE_RATE, + NL80211_ATTR_CQM_TXE_PKTS, + NL80211_ATTR_CQM_TXE_INTVL, /* keep last */ __NL80211_ATTR_CQM_AFTER_LAST, diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 7319f25..356d031 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1500,6 +1500,8 @@ struct cfg80211_gtk_rekey_data { * @set_power_mgmt: Configure WLAN power management. A timeout value of -1 * allows the driver to adjust the dynamic ps timeout value. * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold. + * @set_cqm_txe_config: Configure connection quality monitor TX error + * thresholds. * @sched_scan_start: Tell the driver to start a scheduled scan. * @sched_scan_stop: Tell the driver to stop an ongoing scheduled * scan. The driver_initiated flag specifies whether the driver @@ -1705,6 +1707,10 @@ struct cfg80211_ops { struct net_device *dev, s32 rssi_thold, u32 rssi_hyst); + int (*set_cqm_txe_config)(struct wiphy *wiphy, + struct net_device *dev, + u32 rate, u32 pkts, u32 intvl); + void (*mgmt_frame_register)(struct wiphy *wiphy, struct net_device *dev, u16 frame_type, bool reg); @@ -3300,6 +3306,20 @@ void cfg80211_cqm_pktloss_notify(struct net_device *dev, const u8 *peer, u32 num_packets, gfp_t gfp); /** + * cfg80211_cqm_txe_notify - TX error rate event + * @dev: network device + * @peer: peer's MAC address + * @num_packets: how many packets were lost + * @rate: % of packets which failed transmission + * @gfp: context flags + * + * Notify userspace when configured % TX failures over number of packets in a + * given interval is exceeded. + */ +void cfg80211_cqm_txe_notify(struct net_device *dev, const u8 *peer, + u32 num_packets, u32 rate, gfp_t gfp); + +/** * cfg80211_gtk_rekey_notify - notify userspace about driver rekeying * @dev: network device * @bssid: BSSID of AP (to avoid races) diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c index da4406f..485698a 100644 --- a/net/wireless/mlme.c +++ b/net/wireless/mlme.c @@ -907,6 +907,19 @@ void cfg80211_cqm_pktloss_notify(struct net_device *dev, } EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); +void cfg80211_cqm_txe_notify(struct net_device *dev, + const u8 *peer, u32 num_packets, + u32 rate, gfp_t gfp) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct wiphy *wiphy = wdev->wiphy; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); + + /* Indicate roaming trigger event to user space */ + nl80211_send_cqm_txe_notify(rdev, dev, peer, num_packets, rate, gfp); +} +EXPORT_SYMBOL(cfg80211_cqm_txe_notify); + void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, const u8 *replay_ctr, gfp_t gfp) { diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 7ae54b8..d7320b7 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -6003,8 +6003,34 @@ nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = { [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, + [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, + [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, + [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, }; +static int nl80211_set_cqm_txe(struct genl_info *info, + u32 rate, u32 pkts, u32 intvl) +{ + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct wireless_dev *wdev; + struct net_device *dev = info->user_ptr[1]; + + if (rate < 0 || rate > 100) + return -EINVAL; + + wdev = dev->ieee80211_ptr; + + if (!rdev->ops->set_cqm_txe_config) + return -EOPNOTSUPP; + + if (wdev->iftype != NL80211_IFTYPE_STATION && + wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) + return -EOPNOTSUPP; + + return rdev->ops->set_cqm_txe_config(wdev->wiphy, dev, + rate, pkts, intvl); +} + static int nl80211_set_cqm_rssi(struct genl_info *info, s32 threshold, u32 hysteresis) { @@ -6052,6 +6078,14 @@ static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); err = nl80211_set_cqm_rssi(info, threshold, hysteresis); + } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] && + attrs[NL80211_ATTR_CQM_TXE_PKTS] && + attrs[NL80211_ATTR_CQM_TXE_INTVL]) { + u32 rate, pkts, intvl; + rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); + pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); + intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); + err = nl80211_set_cqm_txe(info, rate, pkts, intvl); } else err = -EINVAL; @@ -8184,6 +8218,53 @@ void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, } void +nl80211_send_cqm_txe_notify(struct cfg80211_registered_device *rdev, + struct net_device *netdev, const u8 *peer, + u32 num_packets, u32 rate, gfp_t gfp) +{ + struct sk_buff *msg; + struct nlattr *pinfoattr; + void *hdr; + + msg = nlmsg_new(NLMSG_GOODSIZE, gfp); + if (!msg) + return; + + hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); + if (!hdr) { + nlmsg_free(msg); + return; + } + + if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || + nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || + nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) + goto nla_put_failure; + + pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); + if (!pinfoattr) + goto nla_put_failure; + + if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) + goto nla_put_failure; + + if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) + goto nla_put_failure; + + nla_nest_end(msg, pinfoattr); + + genlmsg_end(msg, hdr); + + genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, + nl80211_mlme_mcgrp.id, gfp); + return; + + nla_put_failure: + genlmsg_cancel(msg, hdr); + nlmsg_free(msg); +} + +void nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev, struct net_device *netdev, const u8 *peer, u32 num_packets, gfp_t gfp) diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h index 01a1122..c6b738a 100644 --- a/net/wireless/nl80211.h +++ b/net/wireless/nl80211.h @@ -110,6 +110,11 @@ nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev, struct net_device *netdev, const u8 *peer, u32 num_packets, gfp_t gfp); +void +nl80211_send_cqm_txe_notify(struct cfg80211_registered_device *rdev, + struct net_device *netdev, const u8 *peer, + u32 num_packets, u32 rate, gfp_t gfp); + void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, struct net_device *netdev, const u8 *bssid, const u8 *replay_ctr, gfp_t gfp); -- 1.7.4.1