From e5eb8bd9429ebd04cf906156d1fe40b52f88e82f Mon Sep 17 00:00:00 2001 From: "John W. Linville" Date: Mon, 4 Jan 2010 15:58:03 -0500 Subject: mac80211: fix typo added by "mac80211: fix propagation of failed..." 'Typo: it's "Hardware", not "Harware". Hmm, sometimes it's hairware :-)"' -- Holger Schurig Reported-by: Holger Schurig Signed-off-by: John W. Linville --- net/mac80211/util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/mac80211') diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 7e38858..29e1acc 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1094,7 +1094,7 @@ int ieee80211_reconfig(struct ieee80211_local *local) if (res) { WARN(local->suspended, "Harware became unavailable " "upon resume. This is could be a software issue" - "prior to suspend or a harware issue\n"); + "prior to suspend or a hardware issue\n"); return res; } -- cgit v1.1 From cf0277e714a0db302a8f80e1b85fd61c32cf00b3 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 5 Jan 2010 18:00:58 +0100 Subject: mac80211: fix skb buffering issue Since I removed the master netdev, we've been keeping internal queues only, and even before that we never told the networking stack above the virtual interfaces about congestion. This means that packets are queued in mac80211 and the upper layers never know, possibly leading to memory exhaustion and other problems. This patch makes all interfaces multiqueue and uses ndo_select_queue to put the packets into queues per AC. Additionally, when the driver stops a queue, we now stop all corresponding queues for the virtual interfaces as well. The injection case will use VO by default for non-data frames, and BE for data frames, but downgrade any data frames according to ACM. It needs to be fleshed out in the future to allow chosing the queue/AC in radiotap. Reported-by: Lennert Buytenhek Signed-off-by: Johannes Berg Cc: stable@kernel.org [2.6.32] Signed-off-by: John W. Linville --- net/mac80211/iface.c | 39 +++++++++++++++++++-- net/mac80211/rx.c | 4 ++- net/mac80211/tx.c | 5 ++- net/mac80211/util.c | 12 +++++++ net/mac80211/wme.c | 96 ++++++++++++++++++++++++++++++++++++++-------------- net/mac80211/wme.h | 8 +++-- 6 files changed, 132 insertions(+), 32 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 80c16f6..c261cdb 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -15,12 +15,14 @@ #include #include #include +#include #include "ieee80211_i.h" #include "sta_info.h" #include "debugfs_netdev.h" #include "mesh.h" #include "led.h" #include "driver-ops.h" +#include "wme.h" /** * DOC: Interface list locking @@ -644,6 +646,12 @@ static void ieee80211_teardown_sdata(struct net_device *dev) WARN_ON(flushed); } +static u16 ieee80211_netdev_select_queue(struct net_device *dev, + struct sk_buff *skb) +{ + return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); +} + static const struct net_device_ops ieee80211_dataif_ops = { .ndo_open = ieee80211_open, .ndo_stop = ieee80211_stop, @@ -652,8 +660,34 @@ static const struct net_device_ops ieee80211_dataif_ops = { .ndo_set_multicast_list = ieee80211_set_multicast_list, .ndo_change_mtu = ieee80211_change_mtu, .ndo_set_mac_address = eth_mac_addr, + .ndo_select_queue = ieee80211_netdev_select_queue, }; +static u16 ieee80211_monitor_select_queue(struct net_device *dev, + struct sk_buff *skb) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + struct ieee80211_hdr *hdr; + struct ieee80211_radiotap_header *rtap = (void *)skb->data; + + if (local->hw.queues < 4) + return 0; + + if (skb->len < 4 || + skb->len < rtap->it_len + 2 /* frame control */) + return 0; /* doesn't matter, frame will be dropped */ + + hdr = (void *)((u8 *)skb->data + rtap->it_len); + + if (!ieee80211_is_data(hdr->frame_control)) { + skb->priority = 7; + return ieee802_1d_to_ac[skb->priority]; + } + + return ieee80211_downgrade_queue(local, skb); +} + static const struct net_device_ops ieee80211_monitorif_ops = { .ndo_open = ieee80211_open, .ndo_stop = ieee80211_stop, @@ -662,6 +696,7 @@ static const struct net_device_ops ieee80211_monitorif_ops = { .ndo_set_multicast_list = ieee80211_set_multicast_list, .ndo_change_mtu = ieee80211_change_mtu, .ndo_set_mac_address = eth_mac_addr, + .ndo_select_queue = ieee80211_monitor_select_queue, }; static void ieee80211_if_setup(struct net_device *dev) @@ -768,8 +803,8 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name, ASSERT_RTNL(); - ndev = alloc_netdev(sizeof(*sdata) + local->hw.vif_data_size, - name, ieee80211_if_setup); + ndev = alloc_netdev_mq(sizeof(*sdata) + local->hw.vif_data_size, + name, ieee80211_if_setup, local->hw.queues); if (!ndev) return -ENOMEM; dev_net_set(ndev, wiphy_net(local->hw.wiphy)); diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 9f2807a..5429699 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1746,7 +1746,9 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx) memset(info, 0, sizeof(*info)); info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING; info->control.vif = &rx->sdata->vif; - ieee80211_select_queue(local, fwd_skb); + skb_set_queue_mapping(skb, + ieee80211_select_queue(rx->sdata, fwd_skb)); + ieee80211_set_qos_hdr(local, skb); if (is_multicast_ether_addr(fwd_hdr->addr1)) IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.mesh, fwded_mcast); diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 27ceaef..ac210b5 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -1512,7 +1512,7 @@ static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, return; } - ieee80211_select_queue(local, skb); + ieee80211_set_qos_hdr(local, skb); ieee80211_tx(sdata, skb, false); rcu_read_unlock(); } @@ -2291,6 +2291,9 @@ void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb) skb_set_network_header(skb, 0); skb_set_transport_header(skb, 0); + /* send all internal mgmt frames on VO */ + skb_set_queue_mapping(skb, 0); + /* * The other path calling ieee80211_xmit is from the tasklet, * and while we can handle concurrent transmissions locking diff --git a/net/mac80211/util.c b/net/mac80211/util.c index dc76267..3848140 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -269,6 +269,7 @@ static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, enum queue_stop_reason reason) { struct ieee80211_local *local = hw_to_local(hw); + struct ieee80211_sub_if_data *sdata; if (WARN_ON(queue >= hw->queues)) return; @@ -281,6 +282,11 @@ static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, if (!skb_queue_empty(&local->pending[queue])) tasklet_schedule(&local->tx_pending_tasklet); + + rcu_read_lock(); + list_for_each_entry_rcu(sdata, &local->interfaces, list) + netif_tx_wake_queue(netdev_get_tx_queue(sdata->dev, queue)); + rcu_read_unlock(); } void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, @@ -305,11 +311,17 @@ static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, enum queue_stop_reason reason) { struct ieee80211_local *local = hw_to_local(hw); + struct ieee80211_sub_if_data *sdata; if (WARN_ON(queue >= hw->queues)) return; __set_bit(reason, &local->queue_stop_reasons[queue]); + + rcu_read_lock(); + list_for_each_entry_rcu(sdata, &local->interfaces, list) + netif_tx_stop_queue(netdev_get_tx_queue(sdata->dev, queue)); + rcu_read_unlock(); } void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c index b19b769..34e6d02 100644 --- a/net/mac80211/wme.c +++ b/net/mac80211/wme.c @@ -44,22 +44,69 @@ static int wme_downgrade_ac(struct sk_buff *skb) } -/* Indicate which queue to use. */ -static u16 classify80211(struct ieee80211_local *local, struct sk_buff *skb) +/* Indicate which queue to use. */ +u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb) { - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; + struct ieee80211_local *local = sdata->local; + struct sta_info *sta = NULL; + u32 sta_flags = 0; + const u8 *ra = NULL; + bool qos = false; - if (!ieee80211_is_data(hdr->frame_control)) { - /* management frames go on AC_VO queue, but are sent - * without QoS control fields */ - return 0; + if (local->hw.queues < 4 || skb->len < 6) { + skb->priority = 0; /* required for correct WPA/11i MIC */ + return min_t(u16, local->hw.queues - 1, + ieee802_1d_to_ac[skb->priority]); + } + + rcu_read_lock(); + switch (sdata->vif.type) { + case NL80211_IFTYPE_AP_VLAN: + rcu_read_lock(); + sta = rcu_dereference(sdata->u.vlan.sta); + if (sta) + sta_flags = get_sta_flags(sta); + rcu_read_unlock(); + if (sta) + break; + case NL80211_IFTYPE_AP: + ra = skb->data; + break; + case NL80211_IFTYPE_WDS: + ra = sdata->u.wds.remote_addr; + break; +#ifdef CONFIG_MAC80211_MESH + case NL80211_IFTYPE_MESH_POINT: + /* + * XXX: This is clearly broken ... but already was before, + * because ieee80211_fill_mesh_addresses() would clear A1 + * except for multicast addresses. + */ + break; +#endif + case NL80211_IFTYPE_STATION: + ra = sdata->u.mgd.bssid; + break; + case NL80211_IFTYPE_ADHOC: + ra = skb->data; + break; + default: + break; } - if (0 /* injected */) { - /* use AC from radiotap */ + if (!sta && ra && !is_multicast_ether_addr(ra)) { + sta = sta_info_get(sdata, ra); + if (sta) + sta_flags = get_sta_flags(sta); } - if (!ieee80211_is_data_qos(hdr->frame_control)) { + if (sta_flags & WLAN_STA_WME) + qos = true; + + rcu_read_unlock(); + + if (!qos) { skb->priority = 0; /* required for correct WPA/11i MIC */ return ieee802_1d_to_ac[skb->priority]; } @@ -68,6 +115,12 @@ static u16 classify80211(struct ieee80211_local *local, struct sk_buff *skb) * data frame has */ skb->priority = cfg80211_classify8021d(skb); + return ieee80211_downgrade_queue(local, skb); +} + +u16 ieee80211_downgrade_queue(struct ieee80211_local *local, + struct sk_buff *skb) +{ /* in case we are a client verify acm is not set for this ac */ while (unlikely(local->wmm_acm & BIT(skb->priority))) { if (wme_downgrade_ac(skb)) { @@ -85,24 +138,17 @@ static u16 classify80211(struct ieee80211_local *local, struct sk_buff *skb) return ieee802_1d_to_ac[skb->priority]; } -void ieee80211_select_queue(struct ieee80211_local *local, struct sk_buff *skb) +void ieee80211_set_qos_hdr(struct ieee80211_local *local, struct sk_buff *skb) { - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; - u16 queue; - u8 tid; - - queue = classify80211(local, skb); - if (unlikely(queue >= local->hw.queues)) - queue = local->hw.queues - 1; - - /* - * Now we know the 1d priority, fill in the QoS header if - * there is one (and we haven't done this before). - */ + struct ieee80211_hdr *hdr = (void *)skb->data; + + /* Fill in the QoS header if there is one. */ if (ieee80211_is_data_qos(hdr->frame_control)) { u8 *p = ieee80211_get_qos_ctl(hdr); - u8 ack_policy = 0; + u8 ack_policy = 0, tid; + tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK; + if (unlikely(local->wifi_wme_noack_test)) ack_policy |= QOS_CONTROL_ACK_POLICY_NOACK << QOS_CONTROL_ACK_POLICY_SHIFT; @@ -110,6 +156,4 @@ void ieee80211_select_queue(struct ieee80211_local *local, struct sk_buff *skb) *p++ = ack_policy | tid; *p = 0; } - - skb_set_queue_mapping(skb, queue); } diff --git a/net/mac80211/wme.h b/net/mac80211/wme.h index d4fd87c..6053b1c 100644 --- a/net/mac80211/wme.h +++ b/net/mac80211/wme.h @@ -20,7 +20,11 @@ extern const int ieee802_1d_to_ac[8]; -void ieee80211_select_queue(struct ieee80211_local *local, - struct sk_buff *skb); +u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb); +void ieee80211_set_qos_hdr(struct ieee80211_local *local, struct sk_buff *skb); +u16 ieee80211_downgrade_queue(struct ieee80211_local *local, + struct sk_buff *skb); + #endif /* _WME_H */ -- cgit v1.1 From 29401f6630c02ce996561bf2667d84ecdfacb823 Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Tue, 29 Dec 2009 12:43:58 +0200 Subject: mac80211: No need to include WEXT headers here Remove the forgotten linux/wireless.h inclusion from mac80211. Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville --- net/mac80211/main.c | 1 - net/mac80211/scan.c | 1 - net/mac80211/util.c | 1 - 3 files changed, 3 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/main.c b/net/mac80211/main.c index d0a14d9..4688291 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -17,7 +17,6 @@ #include #include #include -#include #include #include #include diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index 365f409..a4c63d4 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -12,7 +12,6 @@ * published by the Free Software Foundation. */ -#include #include #include #include diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 29e1acc..4635d4e 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -18,7 +18,6 @@ #include #include #include -#include #include #include #include -- cgit v1.1 From 1990ca6113399be9249433d5ab377a2a444f1dd8 Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Wed, 30 Dec 2009 14:42:20 +0200 Subject: mac80211: fix a warning related to pointer conversion to u64 cookie On a 32 bit system (in this case an omap 3430 system) gcc warned about pointer conversion: net/mac80211/work.c: In function 'ieee80211_remain_on_channel_timeout': net/mac80211/work.c:534: warning: cast from pointer to integer of different size net/mac80211/work.c: In function 'ieee80211_remain_done': net/mac80211/work.c:1030: warning: cast from pointer to integer of different size net/mac80211/work.c: In function 'ieee80211_wk_remain_on_channel': net/mac80211/work.c:1056: warning: cast from pointer to integer of different size net/mac80211/work.c: In function 'ieee80211_wk_cancel_remain_on_channel': net/mac80211/work.c:1072: warning: cast from pointer to integer of different size Fix it by casting the pointers to unsigned long instead. This makes the compiler happy again. Compile-tested only. Cc: Johannes Berg Signed-off-by: Kalle Valo Signed-off-by: John W. Linville --- net/mac80211/work.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/work.c b/net/mac80211/work.c index ea89ed7..5ba7599 100644 --- a/net/mac80211/work.c +++ b/net/mac80211/work.c @@ -531,9 +531,9 @@ ieee80211_remain_on_channel_timeout(struct ieee80211_work *wk) wk->remain.started = true; wk->timeout = jiffies + msecs_to_jiffies(wk->remain.duration); - cfg80211_ready_on_channel(wk->sdata->dev, (u64)wk, wk->chan, - wk->chan_type, wk->remain.duration, - GFP_KERNEL); + cfg80211_ready_on_channel(wk->sdata->dev, (unsigned long) wk, + wk->chan, wk->chan_type, + wk->remain.duration, GFP_KERNEL); return WORK_ACT_NONE; } @@ -1027,7 +1027,7 @@ static enum work_done_result ieee80211_remain_done(struct ieee80211_work *wk, /* * We are done serving the remain-on-channel command. */ - cfg80211_remain_on_channel_expired(wk->sdata->dev, (u64)wk, + cfg80211_remain_on_channel_expired(wk->sdata->dev, (unsigned long) wk, wk->chan, wk->chan_type, GFP_KERNEL); @@ -1053,7 +1053,7 @@ int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata, wk->remain.duration = duration; - *cookie = (u64)wk; + *cookie = (unsigned long) wk; ieee80211_add_work(wk); @@ -1069,7 +1069,7 @@ int ieee80211_wk_cancel_remain_on_channel(struct ieee80211_sub_if_data *sdata, mutex_lock(&local->work_mtx); list_for_each_entry_safe(wk, tmp, &local->work_list, list) { - if ((u64)wk == cookie) { + if ((unsigned long) wk == cookie) { wk->timeout = jiffies; found = true; break; -- cgit v1.1 From fc5f75773c0b3c5b44785e4efcc54c5f496211a9 Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Wed, 30 Dec 2009 15:54:03 +0200 Subject: mac80211: fix ieee80211_change_mac() to use struct sockaddr Setting the mac address from user space was buggy. For example, when executing this command: ip link set wlan0 address 00:1f:df:88:cd:55 mac80211 used the address 01:00:00:1f:df:88 instead. It was shifted two bytes. The reason was that the addr (type of void *) provided to ieee80211_change_mac() is actually of type struct sockaddr, not just the mac address array. Also the call to eth_mac_addr() expects the address to be struct sockaddr. Signed-off-by: Kalle Valo Signed-off-by: John W. Linville --- net/mac80211/iface.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 00a1f4c..7218966 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -63,15 +63,16 @@ static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) static int ieee80211_change_mac(struct net_device *dev, void *addr) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct sockaddr *sa = addr; int ret; if (ieee80211_sdata_running(sdata)) return -EBUSY; - ret = eth_mac_addr(dev, addr); + ret = eth_mac_addr(dev, sa); if (ret == 0) - memcpy(sdata->vif.addr, addr, ETH_ALEN); + memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); return ret; } -- cgit v1.1 From f3f66b69c8ff08b46975d9e99c7ecb92a8b12eda Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Mon, 4 Jan 2010 00:52:56 +0100 Subject: mac80211: fix ampdu_action tx_start ssn The start_seq_num is taken from the station's tid_seq[tid]. This is fine, except tid_seq sequence counter is shifted by 4 bits to accommodate for frame fragmentation. Both (iwlagn & ath9k) were unaffected by this minor glitch, because they don't read the *ssn for the AMPDU_TX_START action. Signed-off-by: Christian Lamparter Signed-off-by: John W. Linville --- net/mac80211/agg-tx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/mac80211') diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c index ceda366..5aa8f4a 100644 --- a/net/mac80211/agg-tx.c +++ b/net/mac80211/agg-tx.c @@ -301,7 +301,7 @@ int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid) * call back right away, it must see that the flow has begun */ *state |= HT_ADDBA_REQUESTED_MSK; - start_seq_num = sta->tid_seq[tid]; + start_seq_num = sta->tid_seq[tid] >> 4; ret = drv_ampdu_action(local, sdata, IEEE80211_AMPDU_TX_START, pubsta, tid, &start_seq_num); -- cgit v1.1 From debde9ea24d5512400456b1b64df361e422f078d Mon Sep 17 00:00:00 2001 From: "John W. Linville" Date: Wed, 6 Jan 2010 15:35:49 -0500 Subject: mac80211: fix-up build breakage in 2.6.33 "mac80211: fix skb buffering issue" is based on what will become 2.6.34, so it includes an incompatible usage of sta_info_get. This patch will need to be effectively reverted when merging for 2.6.34. Signed-off-by: John W. Linville --- net/mac80211/wme.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/mac80211') diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c index 34e6d02..79d887d 100644 --- a/net/mac80211/wme.c +++ b/net/mac80211/wme.c @@ -96,7 +96,7 @@ u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata, } if (!sta && ra && !is_multicast_ether_addr(ra)) { - sta = sta_info_get(sdata, ra); + sta = sta_info_get(local, ra); if (sta) sta_flags = get_sta_flags(sta); } -- cgit v1.1 From 8a5b33f55452c226aa0e47d737e541985ff10e16 Mon Sep 17 00:00:00 2001 From: "John W. Linville" Date: Wed, 6 Jan 2010 15:39:39 -0500 Subject: Revert "mac80211: replace netif_tx_{start,stop,wake}_all_queues" This reverts commit 53623f1a09c7a7d23b74f0f7d93dba0ebde1006b. This was inadvertantly missed in "mac80211: fix skb buffering issue", and is required with that patch to restore proper queue operation. Signed-off-by: John W. Linville --- net/mac80211/iface.c | 4 ++-- net/mac80211/mlme.c | 4 ++-- net/mac80211/scan.c | 10 +++++----- 3 files changed, 9 insertions(+), 9 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index c261cdb..ff762ed 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -316,7 +316,7 @@ static int ieee80211_open(struct net_device *dev) if (sdata->vif.type == NL80211_IFTYPE_STATION) ieee80211_queue_work(&local->hw, &sdata->u.mgd.work); - netif_start_queue(dev); + netif_tx_start_all_queues(dev); return 0; err_del_interface: @@ -345,7 +345,7 @@ static int ieee80211_stop(struct net_device *dev) /* * Stop TX on this interface first. */ - netif_stop_queue(dev); + netif_tx_stop_all_queues(dev); /* * Now delete all active aggregation sessions. diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index c79e59f..3e1eab9 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -942,7 +942,7 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, ieee80211_recalc_ps(local, -1); mutex_unlock(&local->iflist_mtx); - netif_start_queue(sdata->dev); + netif_tx_start_all_queues(sdata->dev); netif_carrier_on(sdata->dev); } @@ -1074,7 +1074,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, * time -- we don't want the scan code to enable queues. */ - netif_stop_queue(sdata->dev); + netif_tx_stop_all_queues(sdata->dev); netif_carrier_off(sdata->dev); rcu_read_lock(); diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index f1a4c71..f934c96 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -353,10 +353,10 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted) if (sdata->vif.type == NL80211_IFTYPE_STATION) { if (sdata->u.mgd.associated) { ieee80211_scan_ps_disable(sdata); - netif_wake_queue(sdata->dev); + netif_tx_wake_all_queues(sdata->dev); } } else - netif_wake_queue(sdata->dev); + netif_tx_wake_all_queues(sdata->dev); /* re-enable beaconing */ if (sdata->vif.type == NL80211_IFTYPE_AP || @@ -411,7 +411,7 @@ static int ieee80211_start_sw_scan(struct ieee80211_local *local) * are handled in the scan state machine */ if (sdata->vif.type != NL80211_IFTYPE_STATION) - netif_stop_queue(sdata->dev); + netif_tx_stop_all_queues(sdata->dev); } mutex_unlock(&local->iflist_mtx); @@ -575,7 +575,7 @@ static void ieee80211_scan_state_leave_oper_channel(struct ieee80211_local *loca continue; if (sdata->vif.type == NL80211_IFTYPE_STATION) { - netif_stop_queue(sdata->dev); + netif_tx_stop_all_queues(sdata->dev); if (sdata->u.mgd.associated) ieee80211_scan_ps_enable(sdata); } @@ -610,7 +610,7 @@ static void ieee80211_scan_state_enter_oper_channel(struct ieee80211_local *loca if (sdata->vif.type == NL80211_IFTYPE_STATION) { if (sdata->u.mgd.associated) ieee80211_scan_ps_disable(sdata); - netif_wake_queue(sdata->dev); + netif_tx_wake_all_queues(sdata->dev); } } mutex_unlock(&local->iflist_mtx); -- cgit v1.1 From 310bc676e314e92c18257bfc916951879451ee32 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Luk=C3=A1=C5=A1=20Turek?= <8an@praha12.net> Date: Mon, 21 Dec 2009 22:50:48 +0100 Subject: mac80211: Add new callback set_coverage_class Mac80211 callback to driver set_coverage_class() sets slot time and ACK timeout for given IEEE 802.11 coverage class. The callback is optional, but it's essential for long distance links. Signed-off-by: Lukas Turek <8an@praha12.net> Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 7 +++++++ net/mac80211/driver-ops.h | 15 +++++++++++++++ net/mac80211/driver-trace.h | 23 +++++++++++++++++++++++ 3 files changed, 45 insertions(+) (limited to 'net/mac80211') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 2e5e841..976014c 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1230,6 +1230,13 @@ static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) struct ieee80211_local *local = wiphy_priv(wiphy); int err; + if (changed & WIPHY_PARAM_COVERAGE_CLASS) { + err = drv_set_coverage_class(local, wiphy->coverage_class); + + if (err) + return err; + } + if (changed & WIPHY_PARAM_RTS_THRESHOLD) { err = drv_set_rts_threshold(local, wiphy->rts_threshold); diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h index 8757ea7..de91d39 100644 --- a/net/mac80211/driver-ops.h +++ b/net/mac80211/driver-ops.h @@ -214,6 +214,21 @@ static inline int drv_set_rts_threshold(struct ieee80211_local *local, return ret; } +static inline int drv_set_coverage_class(struct ieee80211_local *local, + u8 value) +{ + int ret = 0; + might_sleep(); + + if (local->ops->set_coverage_class) + local->ops->set_coverage_class(&local->hw, value); + else + ret = -EOPNOTSUPP; + + trace_drv_set_coverage_class(local, value, ret); + return ret; +} + static inline void drv_sta_notify(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata, enum sta_notify_cmd cmd, diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h index 977cc75..0ea2581 100644 --- a/net/mac80211/driver-trace.h +++ b/net/mac80211/driver-trace.h @@ -491,6 +491,29 @@ TRACE_EVENT(drv_set_rts_threshold, ) ); +TRACE_EVENT(drv_set_coverage_class, + TP_PROTO(struct ieee80211_local *local, u8 value, int ret), + + TP_ARGS(local, value, ret), + + TP_STRUCT__entry( + LOCAL_ENTRY + __field(u8, value) + __field(int, ret) + ), + + TP_fast_assign( + LOCAL_ASSIGN; + __entry->ret = ret; + __entry->value = value; + ), + + TP_printk( + LOCAL_PR_FMT " value:%d ret:%d", + LOCAL_PR_ARG, __entry->value, __entry->ret + ) +); + TRACE_EVENT(drv_sta_notify, TP_PROTO(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata, -- cgit v1.1 From 3dc1de0bf23816ed557ac8addf680cd5ee57e805 Mon Sep 17 00:00:00 2001 From: Zhu Yi Date: Mon, 28 Dec 2009 16:57:15 +0800 Subject: mac80211: quit addba_resp_timer if Tx BA session is torn down Make addba_resp_timer aware the HT_AGG_STATE_REQ_STOP_BA_MSK mask so that when ___ieee80211_stop_tx_ba_session() is issued the timer will quit. Otherwise when suspend happens before the timer expired, the timer handler will be called immediately after resume and messes up driver status. Signed-off-by: Zhu Yi Acked-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/agg-tx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'net/mac80211') diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c index 5aa8f4a..718fbcf 100644 --- a/net/mac80211/agg-tx.c +++ b/net/mac80211/agg-tx.c @@ -179,7 +179,8 @@ static void sta_addba_resp_timer_expired(unsigned long data) /* check if the TID waits for addBA response */ spin_lock_bh(&sta->lock); - if ((*state & (HT_ADDBA_REQUESTED_MSK | HT_ADDBA_RECEIVED_MSK)) != + if ((*state & (HT_ADDBA_REQUESTED_MSK | HT_ADDBA_RECEIVED_MSK | + HT_AGG_STATE_REQ_STOP_BA_MSK)) != HT_ADDBA_REQUESTED_MSK) { spin_unlock_bh(&sta->lock); *state = HT_AGG_STATE_IDLE; -- cgit v1.1 From e00cfce0cb2a397859607bf515c6de9ce064b64a Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Tue, 29 Dec 2009 12:59:19 +0200 Subject: mac80211: Select lowest rate based on basic rate set in AP mode If the basic rate set is configured to not include the lowest rate (e.g., basic rate set = 6, 12, 24 Mbps in IEEE 802.11g mode), the AP should not send out broadcast frames at 1 Mbps. This type of configuration can be used to optimize channel usage in cases where there is no need for backwards compatibility with IEEE 802.11b-only devices. In AP mode, mac80211 was unconditionally using the lowest rate for Beacon frames and similarly, with all rate control algorithms that use rate_control_send_low(), the lowest rate ended up being used for all broadcast frames (and all unicast frames that are sent before association). Change this to take into account the basic rate configuration in AP mode, i.e., use the lowest rate in the basic rate set instead of the lowest supported rate when selecting the rate. Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville --- net/mac80211/rate.c | 25 +++++++++++++++++++++++++ net/mac80211/tx.c | 24 +++++++++++++----------- 2 files changed, 38 insertions(+), 11 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c index b9007f8..6349e7f 100644 --- a/net/mac80211/rate.c +++ b/net/mac80211/rate.c @@ -207,6 +207,27 @@ static bool rc_no_data_or_no_ack(struct ieee80211_tx_rate_control *txrc) return ((info->flags & IEEE80211_TX_CTL_NO_ACK) || !ieee80211_is_data(fc)); } +static void rc_send_low_broadcast(s8 *idx, u32 basic_rates, u8 max_rate_idx) +{ + u8 i; + + if (basic_rates == 0) + return; /* assume basic rates unknown and accept rate */ + if (*idx < 0) + return; + if (basic_rates & (1 << *idx)) + return; /* selected rate is a basic rate */ + + for (i = *idx + 1; i <= max_rate_idx; i++) { + if (basic_rates & (1 << i)) { + *idx = i; + return; + } + } + + /* could not find a basic rate; use original selection */ +} + bool rate_control_send_low(struct ieee80211_sta *sta, void *priv_sta, struct ieee80211_tx_rate_control *txrc) @@ -218,6 +239,10 @@ bool rate_control_send_low(struct ieee80211_sta *sta, info->control.rates[0].count = (info->flags & IEEE80211_TX_CTL_NO_ACK) ? 1 : txrc->hw->max_rate_tries; + if (!sta && txrc->ap) + rc_send_low_broadcast(&info->control.rates[0].idx, + txrc->bss_conf->basic_rates, + txrc->sband->n_bitrates); return true; } return false; diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 140da4a..4961168 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -520,6 +520,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx) txrc.skb = tx->skb; txrc.reported_rate.idx = -1; txrc.max_rate_idx = tx->sdata->max_ratectrl_rateidx; + txrc.ap = tx->sdata->vif.type == NL80211_IFTYPE_AP; /* set up RTS protection if desired */ if (len > tx->local->hw.wiphy->rts_threshold) { @@ -2060,6 +2061,7 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, struct beacon_data *beacon; struct ieee80211_supported_band *sband; enum ieee80211_band band = local->hw.conf.channel->band; + struct ieee80211_tx_rate_control txrc; sband = local->hw.wiphy->bands[band]; @@ -2167,21 +2169,21 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, info = IEEE80211_SKB_CB(skb); info->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; + info->flags |= IEEE80211_TX_CTL_NO_ACK; info->band = band; - /* - * XXX: For now, always use the lowest rate - */ - info->control.rates[0].idx = 0; - info->control.rates[0].count = 1; - info->control.rates[1].idx = -1; - info->control.rates[2].idx = -1; - info->control.rates[3].idx = -1; - info->control.rates[4].idx = -1; - BUILD_BUG_ON(IEEE80211_TX_MAX_RATES != 5); + + memset(&txrc, 0, sizeof(txrc)); + txrc.hw = hw; + txrc.sband = sband; + txrc.bss_conf = &sdata->vif.bss_conf; + txrc.skb = skb; + txrc.reported_rate.idx = -1; + txrc.max_rate_idx = sdata->max_ratectrl_rateidx; + txrc.ap = true; + rate_control_get_rate(sdata, NULL, &txrc); info->control.vif = vif; - info->flags |= IEEE80211_TX_CTL_NO_ACK; info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT; info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ; out: -- cgit v1.1 From 37eb0b164cf9fa9f70c8500926f5cde7c652f48e Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Wed, 6 Jan 2010 13:09:08 +0200 Subject: cfg80211/mac80211: Use more generic bitrate mask for rate control Extend struct cfg80211_bitrate_mask to actually use a bitfield mask instead of just a single fixed or maximum rate index. This change itself does not modify the behavior (except for debugfs files), but it prepares cfg80211 and mac80211 for a new nl80211 command for setting which rates can be used in TX rate control. Since frames are now going through the rate control algorithm unconditionally, the internal IEEE80211_TX_INTFL_RCALGO flag can now be removed. The RC implementations can use the rate_idx_mask value to optimize their behavior if only a single rate is enabled. The old max_rate_idx in struct ieee80211_tx_rate_control is maintained (but commented as deprecated) for backwards compatibility with existing RC implementations. Once these implementations have been updated to use the more generic rate_idx_mask, the max_rate_idx value can be removed. Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 32 +++------------------- net/mac80211/debugfs_netdev.c | 22 ++++++++------- net/mac80211/ieee80211_i.h | 4 +-- net/mac80211/iface.c | 8 ++++-- net/mac80211/rate.c | 63 +++++++++++++++++++++++++++++++++++-------- net/mac80211/rate.h | 5 +--- net/mac80211/tx.c | 12 +++++++-- 7 files changed, 86 insertions(+), 60 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 976014c..e5dda6f 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1406,8 +1406,6 @@ static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); int i; - u32 target_rate; - struct ieee80211_supported_band *sband; /* * This _could_ be supported by providing a hook for @@ -1417,35 +1415,11 @@ static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) return -EOPNOTSUPP; - sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; - - /* - * target_rate = -1, rate->fixed = 0 means auto only, so use all rates - * target_rate = X, rate->fixed = 1 means only rate X - * target_rate = X, rate->fixed = 0 means all rates <= X - */ - sdata->max_ratectrl_rateidx = -1; - sdata->force_unicast_rateidx = -1; - if (mask->fixed) - target_rate = mask->fixed / 100; - else if (mask->maxrate) - target_rate = mask->maxrate / 100; - else - return 0; + for (i = 0; i < IEEE80211_NUM_BANDS; i++) + sdata->rc_rateidx_mask[i] = mask->control[i].legacy; - for (i = 0; i< sband->n_bitrates; i++) { - if (target_rate != sband->bitrates[i].bitrate) - continue; - - /* requested bitrate found */ - sdata->max_ratectrl_rateidx = i; - if (mask->fixed) - sdata->force_unicast_rateidx = i; - return 0; - } - - return -EINVAL; + return 0; } static int ieee80211_remain_on_channel(struct wiphy *wiphy, diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c index 59f6e3b..1481049 100644 --- a/net/mac80211/debugfs_netdev.c +++ b/net/mac80211/debugfs_netdev.c @@ -127,8 +127,10 @@ __IEEE80211_IF_FILE(name, ieee80211_if_write_##name) /* common attributes */ IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC); -IEEE80211_IF_FILE(force_unicast_rateidx, force_unicast_rateidx, DEC); -IEEE80211_IF_FILE(max_ratectrl_rateidx, max_ratectrl_rateidx, DEC); +IEEE80211_IF_FILE(rc_rateidx_mask_2ghz, rc_rateidx_mask[IEEE80211_BAND_2GHZ], + HEX); +IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[IEEE80211_BAND_5GHZ], + HEX); /* STA attributes */ IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC); @@ -264,8 +266,8 @@ IEEE80211_IF_FILE(dot11MeshHWMPRootMode, static void add_sta_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_ADD(drop_unencrypted, sta); - DEBUGFS_ADD(force_unicast_rateidx, sta); - DEBUGFS_ADD(max_ratectrl_rateidx, sta); + DEBUGFS_ADD(rc_rateidx_mask_2ghz, sta); + DEBUGFS_ADD(rc_rateidx_mask_5ghz, sta); DEBUGFS_ADD(bssid, sta); DEBUGFS_ADD(aid, sta); @@ -275,8 +277,8 @@ static void add_sta_files(struct ieee80211_sub_if_data *sdata) static void add_ap_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_ADD(drop_unencrypted, ap); - DEBUGFS_ADD(force_unicast_rateidx, ap); - DEBUGFS_ADD(max_ratectrl_rateidx, ap); + DEBUGFS_ADD(rc_rateidx_mask_2ghz, ap); + DEBUGFS_ADD(rc_rateidx_mask_5ghz, ap); DEBUGFS_ADD(num_sta_ps, ap); DEBUGFS_ADD(dtim_count, ap); @@ -286,8 +288,8 @@ static void add_ap_files(struct ieee80211_sub_if_data *sdata) static void add_wds_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_ADD(drop_unencrypted, wds); - DEBUGFS_ADD(force_unicast_rateidx, wds); - DEBUGFS_ADD(max_ratectrl_rateidx, wds); + DEBUGFS_ADD(rc_rateidx_mask_2ghz, wds); + DEBUGFS_ADD(rc_rateidx_mask_5ghz, wds); DEBUGFS_ADD(peer, wds); } @@ -295,8 +297,8 @@ static void add_wds_files(struct ieee80211_sub_if_data *sdata) static void add_vlan_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_ADD(drop_unencrypted, vlan); - DEBUGFS_ADD(force_unicast_rateidx, vlan); - DEBUGFS_ADD(max_ratectrl_rateidx, vlan); + DEBUGFS_ADD(rc_rateidx_mask_2ghz, vlan); + DEBUGFS_ADD(rc_rateidx_mask_5ghz, vlan); } static void add_monitor_files(struct ieee80211_sub_if_data *sdata) diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index a27921e..3e4ac3f 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -494,8 +494,8 @@ struct ieee80211_sub_if_data { */ struct ieee80211_if_ap *bss; - int force_unicast_rateidx; /* forced TX rateidx for unicast frames */ - int max_ratectrl_rateidx; /* max TX rateidx for rate control */ + /* bitmap of allowed (non-MCS) rate indexes for rate control */ + u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; union { struct ieee80211_if_ap ap; diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 264a6c9..fe140bf 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -856,8 +856,12 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name, INIT_LIST_HEAD(&sdata->key_list); - sdata->force_unicast_rateidx = -1; - sdata->max_ratectrl_rateidx = -1; + for (i = 0; i < IEEE80211_NUM_BANDS; i++) { + struct ieee80211_supported_band *sband; + sband = local->hw.wiphy->bands[i]; + sdata->rc_rateidx_mask[i] = + sband ? (1 << sband->n_bitrates) - 1 : 0; + } /* setup type-dependent data */ ieee80211_setup_sdata(sdata, type); diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c index 6349e7f..c74b7c8 100644 --- a/net/mac80211/rate.c +++ b/net/mac80211/rate.c @@ -249,6 +249,38 @@ bool rate_control_send_low(struct ieee80211_sta *sta, } EXPORT_SYMBOL(rate_control_send_low); +static void rate_idx_match_mask(struct ieee80211_tx_rate *rate, + int n_bitrates, u32 mask) +{ + int j; + + /* See whether the selected rate or anything below it is allowed. */ + for (j = rate->idx; j >= 0; j--) { + if (mask & (1 << j)) { + /* Okay, found a suitable rate. Use it. */ + rate->idx = j; + return; + } + } + + /* Try to find a higher rate that would be allowed */ + for (j = rate->idx + 1; j < n_bitrates; j++) { + if (mask & (1 << j)) { + /* Okay, found a suitable rate. Use it. */ + rate->idx = j; + return; + } + } + + /* + * Uh.. No suitable rate exists. This should not really happen with + * sane TX rate mask configurations. However, should someone manage to + * configure supported rates and TX rate mask in incompatible way, + * allow the frame to be transmitted with whatever the rate control + * selected. + */ +} + void rate_control_get_rate(struct ieee80211_sub_if_data *sdata, struct sta_info *sta, struct ieee80211_tx_rate_control *txrc) @@ -258,6 +290,7 @@ void rate_control_get_rate(struct ieee80211_sub_if_data *sdata, struct ieee80211_sta *ista = NULL; struct ieee80211_tx_info *info = IEEE80211_SKB_CB(txrc->skb); int i; + u32 mask; if (sta) { ista = &sta->sta; @@ -270,23 +303,31 @@ void rate_control_get_rate(struct ieee80211_sub_if_data *sdata, info->control.rates[i].count = 1; } - if (sta && sdata->force_unicast_rateidx > -1) { - info->control.rates[0].idx = sdata->force_unicast_rateidx; - } else { - ref->ops->get_rate(ref->priv, ista, priv_sta, txrc); - info->flags |= IEEE80211_TX_INTFL_RCALGO; - } + ref->ops->get_rate(ref->priv, ista, priv_sta, txrc); /* - * try to enforce the maximum rate the user wanted + * Try to enforce the rateidx mask the user wanted. skip this if the + * default mask (allow all rates) is used to save some processing for + * the common case. */ - if (sdata->max_ratectrl_rateidx > -1) + mask = sdata->rc_rateidx_mask[info->band]; + if (mask != (1 << txrc->sband->n_bitrates) - 1) { + if (sta) { + /* Filter out rates that the STA does not support */ + mask &= sta->sta.supp_rates[info->band]; + } + /* + * Make sure the rate index selected for each TX rate is + * included in the configured mask and change the rate indexes + * if needed. + */ for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { + /* Rate masking supports only legacy rates for now */ if (info->control.rates[i].flags & IEEE80211_TX_RC_MCS) continue; - info->control.rates[i].idx = - min_t(s8, info->control.rates[i].idx, - sdata->max_ratectrl_rateidx); + rate_idx_match_mask(&info->control.rates[i], + txrc->sband->n_bitrates, mask); + } } BUG_ON(info->control.rates[0].idx < 0); diff --git a/net/mac80211/rate.h b/net/mac80211/rate.h index cb9bd1f..669dddd 100644 --- a/net/mac80211/rate.h +++ b/net/mac80211/rate.h @@ -44,10 +44,7 @@ static inline void rate_control_tx_status(struct ieee80211_local *local, struct rate_control_ref *ref = local->rate_ctrl; struct ieee80211_sta *ista = &sta->sta; void *priv_sta = sta->rate_ctrl_priv; - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); - - if (likely(info->flags & IEEE80211_TX_INTFL_RCALGO)) - ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb); + ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb); } diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 4961168..d3a44812 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -519,7 +519,11 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx) txrc.bss_conf = &tx->sdata->vif.bss_conf; txrc.skb = tx->skb; txrc.reported_rate.idx = -1; - txrc.max_rate_idx = tx->sdata->max_ratectrl_rateidx; + txrc.rate_idx_mask = tx->sdata->rc_rateidx_mask[tx->channel->band]; + if (txrc.rate_idx_mask == (1 << sband->n_bitrates) - 1) + txrc.max_rate_idx = -1; + else + txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1; txrc.ap = tx->sdata->vif.type == NL80211_IFTYPE_AP; /* set up RTS protection if desired */ @@ -2178,7 +2182,11 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, txrc.bss_conf = &sdata->vif.bss_conf; txrc.skb = skb; txrc.reported_rate.idx = -1; - txrc.max_rate_idx = sdata->max_ratectrl_rateidx; + txrc.rate_idx_mask = sdata->rc_rateidx_mask[band]; + if (txrc.rate_idx_mask == (1 << sband->n_bitrates) - 1) + txrc.max_rate_idx = -1; + else + txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1; txrc.ap = true; rate_control_get_rate(sdata, NULL, &txrc); -- cgit v1.1 From 7044cc565b45a898c140fb185174a66f2d68a163 Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Tue, 5 Jan 2010 20:16:19 +0200 Subject: mac80211: add functions to create PS Poll and Nullfunc templates Some hardware, for example wl1251 and wl1271, handle the transmission of power save related frames in hardware, but the driver is responsible for creating the templates. It's better to create the templates in mac80211, that way all drivers can benefit from this. Add two new functions, ieee80211_pspoll_get() and ieee80211_nullfunc_get() which drivers need to call to get the frame. Drivers are also responsible for updating the templates after each association. Also new struct ieee80211_hdr_3addr is added to ieee80211.h to make it easy to calculate length of the Nullfunc frame. Signed-off-by: Kalle Valo Signed-off-by: John W. Linville --- net/mac80211/tx.c | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) (limited to 'net/mac80211') diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index d3a44812..055b45b 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -2200,6 +2200,84 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, } EXPORT_SYMBOL(ieee80211_beacon_get_tim); +struct sk_buff *ieee80211_pspoll_get(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ieee80211_sub_if_data *sdata; + struct ieee80211_if_managed *ifmgd; + struct ieee80211_pspoll *pspoll; + struct ieee80211_local *local; + struct sk_buff *skb; + + if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) + return NULL; + + sdata = vif_to_sdata(vif); + ifmgd = &sdata->u.mgd; + local = sdata->local; + + skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*pspoll)); + if (!skb) { + printk(KERN_DEBUG "%s: failed to allocate buffer for " + "pspoll template\n", sdata->name); + return NULL; + } + skb_reserve(skb, local->hw.extra_tx_headroom); + + pspoll = (struct ieee80211_pspoll *) skb_put(skb, sizeof(*pspoll)); + memset(pspoll, 0, sizeof(*pspoll)); + pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL | + IEEE80211_STYPE_PSPOLL); + pspoll->aid = cpu_to_le16(ifmgd->aid); + + /* aid in PS-Poll has its two MSBs each set to 1 */ + pspoll->aid |= cpu_to_le16(1 << 15 | 1 << 14); + + memcpy(pspoll->bssid, ifmgd->bssid, ETH_ALEN); + memcpy(pspoll->ta, vif->addr, ETH_ALEN); + + return skb; +} +EXPORT_SYMBOL(ieee80211_pspoll_get); + +struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ieee80211_hdr_3addr *nullfunc; + struct ieee80211_sub_if_data *sdata; + struct ieee80211_if_managed *ifmgd; + struct ieee80211_local *local; + struct sk_buff *skb; + + if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) + return NULL; + + sdata = vif_to_sdata(vif); + ifmgd = &sdata->u.mgd; + local = sdata->local; + + skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*nullfunc)); + if (!skb) { + printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc " + "template\n", sdata->name); + return NULL; + } + skb_reserve(skb, local->hw.extra_tx_headroom); + + nullfunc = (struct ieee80211_hdr_3addr *) skb_put(skb, + sizeof(*nullfunc)); + memset(nullfunc, 0, sizeof(*nullfunc)); + nullfunc->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | + IEEE80211_STYPE_NULLFUNC | + IEEE80211_FCTL_TODS); + memcpy(nullfunc->addr1, ifmgd->bssid, ETH_ALEN); + memcpy(nullfunc->addr2, vif->addr, ETH_ALEN); + memcpy(nullfunc->addr3, ifmgd->bssid, ETH_ALEN); + + return skb; +} +EXPORT_SYMBOL(ieee80211_nullfunc_get); + void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, const void *frame, size_t frame_len, const struct ieee80211_tx_info *frame_txctl, -- cgit v1.1 From d8cd189e9b1e050629f545e76b21a321f62c29bf Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Tue, 5 Jan 2010 20:16:26 +0200 Subject: mac80211: use PS Poll and Nullfunc templates when sending such frames To avoid duplicate code, use ieee80211_[pspoll|nullfunc]_get() to get templates for PS Poll and Nullfunc frames in mlme.c. Compile-tested only. Signed-off-by: Kalle Valo Signed-off-by: John W. Linville --- net/mac80211/mlme.c | 48 +++++++++--------------------------------------- 1 file changed, 9 insertions(+), 39 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 97bcf22..5484cf9 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -249,30 +249,15 @@ static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, void ieee80211_send_pspoll(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata) { - struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_pspoll *pspoll; struct sk_buff *skb; - u16 fc; - skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*pspoll)); - if (!skb) { - printk(KERN_DEBUG "%s: failed to allocate buffer for " - "pspoll frame\n", sdata->name); + skb = ieee80211_pspoll_get(&local->hw, &sdata->vif); + if (!skb) return; - } - skb_reserve(skb, local->hw.extra_tx_headroom); - - pspoll = (struct ieee80211_pspoll *) skb_put(skb, sizeof(*pspoll)); - memset(pspoll, 0, sizeof(*pspoll)); - fc = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL | IEEE80211_FCTL_PM; - pspoll->frame_control = cpu_to_le16(fc); - pspoll->aid = cpu_to_le16(ifmgd->aid); - /* aid in PS-Poll has its two MSBs each set to 1 */ - pspoll->aid |= cpu_to_le16(1 << 15 | 1 << 14); - - memcpy(pspoll->bssid, ifmgd->bssid, ETH_ALEN); - memcpy(pspoll->ta, sdata->vif.addr, ETH_ALEN); + pspoll = (struct ieee80211_pspoll *) skb->data; + pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; ieee80211_tx_skb(sdata, skb); @@ -283,30 +268,15 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local, int powersave) { struct sk_buff *skb; - struct ieee80211_hdr *nullfunc; - __le16 fc; + struct ieee80211_hdr_3addr *nullfunc; - if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) + skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif); + if (!skb) return; - skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24); - if (!skb) { - printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc " - "frame\n", sdata->name); - return; - } - skb_reserve(skb, local->hw.extra_tx_headroom); - - nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24); - memset(nullfunc, 0, 24); - fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | - IEEE80211_FCTL_TODS); + nullfunc = (struct ieee80211_hdr_3addr *) skb->data; if (powersave) - fc |= cpu_to_le16(IEEE80211_FCTL_PM); - nullfunc->frame_control = fc; - memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); - memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); - memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); + nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; ieee80211_tx_skb(sdata, skb); -- cgit v1.1 From 05e54ea6cce400ac34528d705179b45244f61074 Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Tue, 5 Jan 2010 20:16:38 +0200 Subject: mac80211: create Probe Request template Certain type of hardware, for example wl1251 and wl1271, need a template for the Probe Request. Create a function ieee80211_probereq_get() which creates the template and drivers send it to hardware. Signed-off-by: Kalle Valo Signed-off-by: John W. Linville --- net/mac80211/tx.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) (limited to 'net/mac80211') diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 055b45b..0661e69 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -2278,6 +2278,56 @@ struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw, } EXPORT_SYMBOL(ieee80211_nullfunc_get); +struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + const u8 *ssid, size_t ssid_len, + const u8 *ie, size_t ie_len) +{ + struct ieee80211_sub_if_data *sdata; + struct ieee80211_local *local; + struct ieee80211_hdr_3addr *hdr; + struct sk_buff *skb; + size_t ie_ssid_len; + u8 *pos; + + sdata = vif_to_sdata(vif); + local = sdata->local; + ie_ssid_len = 2 + ssid_len; + + skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*hdr) + + ie_ssid_len + ie_len); + if (!skb) { + printk(KERN_DEBUG "%s: failed to allocate buffer for probe " + "request template\n", sdata->name); + return NULL; + } + + skb_reserve(skb, local->hw.extra_tx_headroom); + + hdr = (struct ieee80211_hdr_3addr *) skb_put(skb, sizeof(*hdr)); + memset(hdr, 0, sizeof(*hdr)); + hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | + IEEE80211_STYPE_PROBE_REQ); + memset(hdr->addr1, 0xff, ETH_ALEN); + memcpy(hdr->addr2, vif->addr, ETH_ALEN); + memset(hdr->addr3, 0xff, ETH_ALEN); + + pos = skb_put(skb, ie_ssid_len); + *pos++ = WLAN_EID_SSID; + *pos++ = ssid_len; + if (ssid) + memcpy(pos, ssid, ssid_len); + pos += ssid_len; + + if (ie) { + pos = skb_put(skb, ie_len); + memcpy(pos, ie, ie_len); + } + + return skb; +} +EXPORT_SYMBOL(ieee80211_probereq_get); + void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, const void *frame, size_t frame_len, const struct ieee80211_tx_info *frame_txctl, -- cgit v1.1 From 7c12ce8b854df346388ea56d684784e3484012cf Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Tue, 5 Jan 2010 20:16:44 +0200 Subject: mac80211: use Probe Request template when sending a direct scan As mac80211 now has a separate function for creating Probe Request templates, better to use it when sending direct Probe Requests to an AP. Only the bssid needs to be updated in the template before sending it. Signed-off-by: Kalle Valo Signed-off-by: John W. Linville --- net/mac80211/util.c | 40 ++++++++++++++++------------------------ 1 file changed, 16 insertions(+), 24 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/util.c b/net/mac80211/util.c index bc73904..72a98e8 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1000,37 +1000,29 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, struct ieee80211_local *local = sdata->local; struct sk_buff *skb; struct ieee80211_mgmt *mgmt; - u8 *pos; - - skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 + - ie_len); - if (!skb) { - printk(KERN_DEBUG "%s: failed to allocate buffer for probe " - "request\n", sdata->name); + size_t buf_len; + u8 *buf; + + /* FIXME: come up with a proper value */ + buf = kmalloc(200 + ie_len, GFP_KERNEL); + if (!buf) { + printk(KERN_DEBUG "%s: failed to allocate temporary IE " + "buffer\n", sdata->name); return; } - skb_reserve(skb, local->hw.extra_tx_headroom); - mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); - memset(mgmt, 0, 24); - mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | - IEEE80211_STYPE_PROBE_REQ); - memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); + buf_len = ieee80211_build_preq_ies(local, buf, ie, ie_len, + local->hw.conf.channel->band); + + skb = ieee80211_probereq_get(&local->hw, &sdata->vif, + ssid, ssid_len, + buf, buf_len); + if (dst) { + mgmt = (struct ieee80211_mgmt *) skb->data; memcpy(mgmt->da, dst, ETH_ALEN); memcpy(mgmt->bssid, dst, ETH_ALEN); - } else { - memset(mgmt->da, 0xff, ETH_ALEN); - memset(mgmt->bssid, 0xff, ETH_ALEN); } - pos = skb_put(skb, 2 + ssid_len); - *pos++ = WLAN_EID_SSID; - *pos++ = ssid_len; - memcpy(pos, ssid, ssid_len); - pos += ssid_len; - - skb_put(skb, ieee80211_build_preq_ies(local, pos, ie, ie_len, - local->hw.conf.channel->band)); IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; ieee80211_tx_skb(sdata, skb); -- cgit v1.1 From 81ac3462d346ee7aaf037a35156b0a7a354e98cf Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 6 Jan 2010 15:30:58 +0100 Subject: mac80211: fix a few work bugs Kalle and Lennert reported problems with the new work code, and at least Kalle's problem I was able to trace to a missing jiffies initialisation. I also ran into a problem where occasionally I couldn't connect, which seems fixed with kicking the work items after scanning. Finally, also add some sanity checking code to verify that we're not adding work items while an interface is down -- that case could lead to something similar to what Lennert was seeing. There still seems to be a race condition that we're trying to figure out separately. Signed-off-by: Johannes Berg Tested-by: Lennert Buytenhek Tested-by: Kalle Valo Signed-off-by: John W. Linville --- net/mac80211/scan.c | 1 + net/mac80211/work.c | 4 ++++ 2 files changed, 5 insertions(+) (limited to 'net/mac80211') diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index a4c63d4..30cb62b 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -284,6 +284,7 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted) ieee80211_mlme_notify_scan_completed(local); ieee80211_ibss_notify_scan_completed(local); ieee80211_mesh_notify_scan_completed(local); + ieee80211_queue_work(&local->hw, &local->work_work); } EXPORT_SYMBOL(ieee80211_scan_completed); diff --git a/net/mac80211/work.c b/net/mac80211/work.c index 5ba7599..7c5d95b 100644 --- a/net/mac80211/work.c +++ b/net/mac80211/work.c @@ -818,6 +818,7 @@ static void ieee80211_work_work(struct work_struct *work) wk->chan == local->tmp_channel && wk->chan_type == local->tmp_channel_type) { wk->started = true; + wk->timeout = jiffies; } if (!wk->started && !local->tmp_channel) { @@ -935,6 +936,9 @@ void ieee80211_add_work(struct ieee80211_work *wk) if (WARN_ON(!wk->done)) return; + if (WARN_ON(!ieee80211_sdata_running(wk->sdata))) + return; + wk->started = false; local = wk->sdata->local; -- cgit v1.1 From d524215f6cad245249df8def19125ae6fd0bcc9b Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 8 Jan 2010 18:06:26 +0100 Subject: mac80211: use nullfunc frames for 4-addr sta detection To detect incoming 4-addr stations, hostapd needs to receive a 4-addr data frame from the remote station, so that it can create the AP VLAN for it. With this patch, the mlme code emits a 4-addr nullfunc frame immediately after assoc. On the AP side it also drops 4-addr nullfunc frames to the cooked monitor mode interface, if the interface hasn't been fully set up to receive 4-addr data frames yet. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- net/mac80211/mlme.c | 39 +++++++++++++++++++++++++++++++++++++++ net/mac80211/rx.c | 12 ++++++++++++ 2 files changed, 51 insertions(+) (limited to 'net/mac80211') diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 5484cf9..0336dbb 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -282,6 +282,38 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local, ieee80211_tx_skb(sdata, skb); } +static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata) +{ + struct sk_buff *skb; + struct ieee80211_hdr *nullfunc; + __le16 fc; + + if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) + return; + + skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30); + if (!skb) { + printk(KERN_DEBUG "%s: failed to allocate buffer for 4addr " + "nullfunc frame\n", sdata->name); + return; + } + skb_reserve(skb, local->hw.extra_tx_headroom); + + nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30); + memset(nullfunc, 0, 30); + fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | + IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); + nullfunc->frame_control = fc; + memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); + memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); + memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); + memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN); + + IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; + ieee80211_tx_skb(sdata, skb); +} + /* spectrum management related things */ static void ieee80211_chswitch_work(struct work_struct *work) { @@ -1090,6 +1122,13 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk, ieee80211_set_associated(sdata, cbss, changed); /* + * If we're using 4-addr mode, let the AP know that we're + * doing so, so that it can create the STA VLAN on its side + */ + if (ifmgd->use_4addr) + ieee80211_send_4addr_nullfunc(local, sdata); + + /* * Start timer to probe the connection to the AP now. * Also start the timer that will detect beacon loss. */ diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index e12f39a..efa6d36 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1111,6 +1111,18 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx) if (ieee80211_is_nullfunc(hdr->frame_control) || ieee80211_is_qos_nullfunc(hdr->frame_control)) { I802_DEBUG_INC(rx->local->rx_handlers_drop_nullfunc); + + /* + * If we receive a 4-addr nullfunc frame from a STA + * that was not moved to a 4-addr STA vlan yet, drop + * the frame to the monitor interface, to make sure + * that hostapd sees it + */ + if (ieee80211_has_a4(hdr->frame_control) && + (rx->sdata->vif.type == NL80211_IFTYPE_AP || + (rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && + !rx->sdata->u.vlan.sta))) + return RX_DROP_MONITOR; /* * Update counter and free packet here to avoid * counting this as a dropped packed. -- cgit v1.1 From 0e5ded5a87c097760abd68521b86f1025dedc7d7 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 8 Jan 2010 18:10:58 +0100 Subject: mac80211: allow station updates on ap interfaces for vlan stations Since the per-vif station changes, sta_info_get on the ap sdata no longer returns entries for stations on ap vlans. This causes issues with hostapd, which currently always passes the ap interface name to nl80211 calls. This patch provides bug compatibility with the earlier versions until hostapd is fixed. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 12 ++++++------ net/mac80211/sta_info.c | 21 +++++++++++++++++++++ net/mac80211/sta_info.h | 3 +++ 3 files changed, 30 insertions(+), 6 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index e5dda6f..dc12e94 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -148,7 +148,7 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, rcu_read_lock(); if (mac_addr) { - sta = sta_info_get(sdata, mac_addr); + sta = sta_info_get_bss(sdata, mac_addr); if (!sta) { ieee80211_key_free(key); err = -ENOENT; @@ -179,7 +179,7 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, if (mac_addr) { ret = -ENOENT; - sta = sta_info_get(sdata, mac_addr); + sta = sta_info_get_bss(sdata, mac_addr); if (!sta) goto out_unlock; @@ -226,7 +226,7 @@ static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, rcu_read_lock(); if (mac_addr) { - sta = sta_info_get(sdata, mac_addr); + sta = sta_info_get_bss(sdata, mac_addr); if (!sta) goto out; @@ -419,7 +419,7 @@ static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, rcu_read_lock(); - sta = sta_info_get(sdata, mac); + sta = sta_info_get_bss(sdata, mac); if (sta) { ret = 0; sta_set_sinfo(sta, sinfo); @@ -775,7 +775,7 @@ static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, if (mac) { rcu_read_lock(); - sta = sta_info_get(sdata, mac); + sta = sta_info_get_bss(sdata, mac); if (!sta) { rcu_read_unlock(); return -ENOENT; @@ -803,7 +803,7 @@ static int ieee80211_change_station(struct wiphy *wiphy, rcu_read_lock(); - sta = sta_info_get(sdata, mac); + sta = sta_info_get_bss(sdata, mac); if (!sta) { rcu_read_unlock(); return -ENOENT; diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index 47da552..f735826 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -119,6 +119,27 @@ struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, return sta; } +/* + * Get sta info either from the specified interface + * or from one of its vlans + */ +struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, + const u8 *addr) +{ + struct ieee80211_local *local = sdata->local; + struct sta_info *sta; + + sta = rcu_dereference(local->sta_hash[STA_HASH(addr)]); + while (sta) { + if ((sta->sdata == sdata || + sta->sdata->bss == sdata->bss) && + memcmp(sta->sta.addr, addr, ETH_ALEN) == 0) + break; + sta = rcu_dereference(sta->hnext); + } + return sta; +} + struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, int idx) { diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index c820823..6f79bba 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -408,6 +408,9 @@ static inline u32 get_sta_flags(struct sta_info *sta) struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, const u8 *addr); +struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, + const u8 *addr); + static inline void for_each_sta_info_type_check(struct ieee80211_local *local, const u8 *addr, -- cgit v1.1 From 3f0e0b220f80075ce15483b20458192c0ac27426 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 8 Jan 2010 18:15:13 +0100 Subject: mac80211: do not transmit frames on unconfigured 4-addr vlan interfaces If frames are transmitted on 4-addr ap vlan interfaces with no station, they end up being transmitted unencrypted, even if the ap interface uses WPA. This patch add some sanity checking to make sure that this does not happen. Signed-off-by: Felix Fietkau Cc: stable@kernel.org Signed-off-by: John W. Linville --- net/mac80211/tx.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'net/mac80211') diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 0661e69..47ca59e 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -1056,8 +1056,11 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata, hdr = (struct ieee80211_hdr *) skb->data; - if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) + if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { tx->sta = rcu_dereference(sdata->u.vlan.sta); + if (!tx->sta && sdata->dev->ieee80211_ptr->use_4addr) + return TX_DROP; + } if (!tx->sta) tx->sta = sta_info_get(sdata, hdr->addr1); -- cgit v1.1 From 90be561b119a9e5439733f09cc70bd4ce9ec8022 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 8 Jan 2010 19:01:07 +0100 Subject: mac80211: fix return from ieee80211_assoc_success sparse pointed out that I made a mistake converting the return value of ieee80211_assoc_success to bool, this place should return false instead of one of the enum values (which would be true). Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/mlme.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/mac80211') diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 0336dbb..8045fd6 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1098,7 +1098,7 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk, if (err) { printk(KERN_DEBUG "%s: failed to insert STA entry for" " the AP (error %d)\n", sdata->name, err); - return RX_MGMT_CFG80211_ASSOC_ERROR; + return false; } if (elems.wmm_param) -- cgit v1.1 From 5e124bd5e00fcf54df555b368c2dafe6886f1df2 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 8 Jan 2010 22:33:38 -0800 Subject: net/mac80211/mlme.c: Remove unnecessary semicolons Signed-off-by: Joe Perches Signed-off-by: John W. Linville --- net/mac80211/mlme.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/mac80211') diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 8045fd6..86f025b 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1783,7 +1783,7 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, if (!wk) return -ENOMEM; - memcpy(wk->filter_ta, req->bss->bssid, ETH_ALEN);; + memcpy(wk->filter_ta, req->bss->bssid, ETH_ALEN); if (req->ie && req->ie_len) { memcpy(wk->ie, req->ie, req->ie_len); -- cgit v1.1 From 678f415fdc534c0a806fce992e4c62df0eff19d2 Mon Sep 17 00:00:00 2001 From: Lennert Buytenhek Date: Sun, 10 Jan 2010 14:07:53 +0100 Subject: mac80211: flush workqueue before calling driver ->stop() method Since commit "mwl8k: handle station database update for AP's sta entry via ->sta_notify()", mwl8k every now and then gets a command timeout when ifconfig'ing a STA interface down. This turns out to be due to mwl8k_stop() being called while the work queue item that was scheduled by mwl8k_sta_notify() to remove the STA entry for the associated AP is still queued, and the former disables interrupts so that when the latter eventually runs, a command completion interrupt is never seen. Fix this by changing ieee80211_stop_device() so that the workqueue is flushed before drv_stop() is called, instead of doing it the other way around as is done now. (As ->stop() is allowed to sleep, there isn't any reason for drivers to queue work from within it.) Signed-off-by: Lennert Buytenhek Signed-off-by: John W. Linville --- net/mac80211/util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/mac80211') diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 72a98e8..a2ba6e2 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1069,9 +1069,9 @@ void ieee80211_stop_device(struct ieee80211_local *local) ieee80211_led_radio(local, false); cancel_work_sync(&local->reconfig_filter); - drv_stop(local); flush_workqueue(local->workqueue); + drv_stop(local); } int ieee80211_reconfig(struct ieee80211_local *local) -- cgit v1.1 From 2d46d7c121436f1dafe91b0a8d9b99e534cfa5f8 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Sun, 10 Jan 2010 17:12:41 +0100 Subject: mac80211: remove unused type argument The type argument to DEBUGFS_ADD() isn't used and can be removed, it's around from before the conversion to debugfs_remove_recursive(). Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/debugfs_netdev.c | 38 +++++++++++++++++++------------------- 1 file changed, 19 insertions(+), 19 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c index 1481049..9affe2c 100644 --- a/net/mac80211/debugfs_netdev.c +++ b/net/mac80211/debugfs_netdev.c @@ -255,7 +255,7 @@ IEEE80211_IF_FILE(dot11MeshHWMPRootMode, #endif -#define DEBUGFS_ADD(name, type) \ +#define DEBUGFS_ADD(name) \ debugfs_create_file(#name, 0400, sdata->debugfs.dir, \ sdata, &name##_ops); @@ -265,40 +265,40 @@ IEEE80211_IF_FILE(dot11MeshHWMPRootMode, static void add_sta_files(struct ieee80211_sub_if_data *sdata) { - DEBUGFS_ADD(drop_unencrypted, sta); - DEBUGFS_ADD(rc_rateidx_mask_2ghz, sta); - DEBUGFS_ADD(rc_rateidx_mask_5ghz, sta); + DEBUGFS_ADD(drop_unencrypted); + DEBUGFS_ADD(rc_rateidx_mask_2ghz); + DEBUGFS_ADD(rc_rateidx_mask_5ghz); - DEBUGFS_ADD(bssid, sta); - DEBUGFS_ADD(aid, sta); + DEBUGFS_ADD(bssid); + DEBUGFS_ADD(aid); DEBUGFS_ADD_MODE(smps, 0600); } static void add_ap_files(struct ieee80211_sub_if_data *sdata) { - DEBUGFS_ADD(drop_unencrypted, ap); - DEBUGFS_ADD(rc_rateidx_mask_2ghz, ap); - DEBUGFS_ADD(rc_rateidx_mask_5ghz, ap); + DEBUGFS_ADD(drop_unencrypted); + DEBUGFS_ADD(rc_rateidx_mask_2ghz); + DEBUGFS_ADD(rc_rateidx_mask_5ghz); - DEBUGFS_ADD(num_sta_ps, ap); - DEBUGFS_ADD(dtim_count, ap); - DEBUGFS_ADD(num_buffered_multicast, ap); + DEBUGFS_ADD(num_sta_ps); + DEBUGFS_ADD(dtim_count); + DEBUGFS_ADD(num_buffered_multicast); } static void add_wds_files(struct ieee80211_sub_if_data *sdata) { - DEBUGFS_ADD(drop_unencrypted, wds); - DEBUGFS_ADD(rc_rateidx_mask_2ghz, wds); - DEBUGFS_ADD(rc_rateidx_mask_5ghz, wds); + DEBUGFS_ADD(drop_unencrypted); + DEBUGFS_ADD(rc_rateidx_mask_2ghz); + DEBUGFS_ADD(rc_rateidx_mask_5ghz); - DEBUGFS_ADD(peer, wds); + DEBUGFS_ADD(peer); } static void add_vlan_files(struct ieee80211_sub_if_data *sdata) { - DEBUGFS_ADD(drop_unencrypted, vlan); - DEBUGFS_ADD(rc_rateidx_mask_2ghz, vlan); - DEBUGFS_ADD(rc_rateidx_mask_5ghz, vlan); + DEBUGFS_ADD(drop_unencrypted); + DEBUGFS_ADD(rc_rateidx_mask_2ghz); + DEBUGFS_ADD(rc_rateidx_mask_5ghz); } static void add_monitor_files(struct ieee80211_sub_if_data *sdata) -- cgit v1.1 From ab13315af97919fae0e014748105fdc2e30afb2d Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Tue, 12 Jan 2010 10:42:31 +0200 Subject: mac80211: add U-APSD client support Add Unscheduled Automatic Power-Save Delivery (U-APSD) client support. The idea is that the data frames from the client trigger AP to send the buffered frames with ACs which have U-APSD enabled. This decreases latency and makes it possible to save even more power. Driver needs to use IEEE80211_HW_UAPSD to enable the feature. The current implementation assumes that firmware takes care of the wakeup and hardware needing IEEE80211_HW_PS_NULLFUNC_STACK is not yet supported. Tested with wl1251 on a Nokia N900 and Cisco Aironet 1231G AP and running various test traffic with ping. Signed-off-by: Kalle Valo Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 7 +++++++ net/mac80211/ieee80211_i.h | 13 ++++++++++++- net/mac80211/main.c | 4 ++++ net/mac80211/mlme.c | 31 ++++++++++++++++++++++++++++--- net/mac80211/scan.c | 18 ++++++++++++++++++ net/mac80211/util.c | 2 ++ net/mac80211/work.c | 12 ++++++++++-- 7 files changed, 81 insertions(+), 6 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index dc12e94..8286df5 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1128,6 +1128,13 @@ static int ieee80211_set_txq_params(struct wiphy *wiphy, p.cw_max = params->cwmax; p.cw_min = params->cwmin; p.txop = params->txop; + + /* + * Setting tx queue params disables u-apsd because it's only + * called in master mode. + */ + p.uapsd = false; + if (drv_conf_tx(local, params->queue, &p)) { printk(KERN_DEBUG "%s: failed to set TX queue " "parameters for queue %d\n", diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 3e4ac3f..3468e37 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -58,6 +58,15 @@ struct ieee80211_local; #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024)) +#define IEEE80211_DEFAULT_UAPSD_QUEUES \ + (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \ + IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \ + IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \ + IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) + +#define IEEE80211_DEFAULT_MAX_SP_LEN \ + IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL + struct ieee80211_fragment_entry { unsigned long first_frag_time; unsigned int seq; @@ -78,6 +87,7 @@ struct ieee80211_bss { u8 dtim_period; bool wmm_used; + bool uapsd_supported; unsigned long last_probe_resp; @@ -285,7 +295,7 @@ struct ieee80211_work { u8 ssid[IEEE80211_MAX_SSID_LEN]; u8 ssid_len; u8 supp_rates_len; - bool wmm_used, use_11n; + bool wmm_used, use_11n, uapsd_used; } assoc; struct { u32 duration; @@ -306,6 +316,7 @@ enum ieee80211_sta_flags { IEEE80211_STA_DISABLE_11N = BIT(4), IEEE80211_STA_CSA_RECEIVED = BIT(5), IEEE80211_STA_MFP_ENABLED = BIT(6), + IEEE80211_STA_UAPSD_ENABLED = BIT(7), }; struct ieee80211_if_managed { diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 4688291..0054bba 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -491,6 +491,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; + WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) + && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), + "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"); + /* * Calculate scan IE length -- we need this to alloc * memory and to subtract from the driver limit. It diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 86f025b..39c27d8 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -569,7 +569,7 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local, struct ieee80211_tx_queue_params params; size_t left; int count; - u8 *pos; + u8 *pos, uapsd_queues = 0; if (local->hw.queues < 4) return; @@ -579,6 +579,10 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local, if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) return; + + if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) + uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; + count = wmm_param[6] & 0x0f; if (count == ifmgd->wmm_last_param_set) return; @@ -593,6 +597,7 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local, for (; left >= 4; left -= 4, pos += 4) { int aci = (pos[0] >> 5) & 0x03; int acm = (pos[0] >> 4) & 0x01; + bool uapsd = false; int queue; switch (aci) { @@ -600,22 +605,30 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local, queue = 3; if (acm) local->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ + if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) + uapsd = true; break; case 2: /* AC_VI */ queue = 1; if (acm) local->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ + if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) + uapsd = true; break; case 3: /* AC_VO */ queue = 0; if (acm) local->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ + if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) + uapsd = true; break; case 0: /* AC_BE */ default: queue = 2; if (acm) local->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ + if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) + uapsd = true; break; } @@ -623,11 +636,14 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local, params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); params.cw_min = ecw2cw(pos[1] & 0x0f); params.txop = get_unaligned_le16(pos + 2); + params.uapsd = uapsd; + #ifdef CONFIG_MAC80211_VERBOSE_DEBUG printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d " - "cWmin=%d cWmax=%d txop=%d\n", + "cWmin=%d cWmax=%d txop=%d uapsd=%d\n", wiphy_name(local->hw.wiphy), queue, aci, acm, - params.aifs, params.cw_min, params.cw_max, params.txop); + params.aifs, params.cw_min, params.cw_max, params.txop, + params.uapsd); #endif if (drv_conf_tx(local, queue, ¶ms) && local->ops->conf_tx) printk(KERN_DEBUG "%s: failed to set TX queue " @@ -1906,6 +1922,15 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, wk->assoc.ht_information_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_INFORMATION); + if (bss->wmm_used && bss->uapsd_supported && + (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)) { + wk->assoc.uapsd_used = true; + ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED; + } else { + wk->assoc.uapsd_used = false; + ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED; + } + ssid = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); memcpy(wk->assoc.ssid, ssid + 2, ssid[1]); wk->assoc.ssid_len = ssid[1]; diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index 30cb62b..9afe2f9 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -54,6 +54,23 @@ void ieee80211_rx_bss_put(struct ieee80211_local *local, cfg80211_put_bss(container_of((void *)bss, struct cfg80211_bss, priv)); } +static bool is_uapsd_supported(struct ieee802_11_elems *elems) +{ + u8 qos_info; + + if (elems->wmm_info && elems->wmm_info_len == 7 + && elems->wmm_info[5] == 1) + qos_info = elems->wmm_info[6]; + else if (elems->wmm_param && elems->wmm_param_len == 24 + && elems->wmm_param[5] == 1) + qos_info = elems->wmm_param[6]; + else + /* no valid wmm information or parameter element found */ + return false; + + return qos_info & IEEE80211_WMM_IE_AP_QOSINFO_UAPSD; +} + struct ieee80211_bss * ieee80211_bss_info_update(struct ieee80211_local *local, struct ieee80211_rx_status *rx_status, @@ -117,6 +134,7 @@ ieee80211_bss_info_update(struct ieee80211_local *local, } bss->wmm_used = elems->wmm_param || elems->wmm_info; + bss->uapsd_supported = is_uapsd_supported(elems); if (!beacon) bss->last_probe_resp = jiffies; diff --git a/net/mac80211/util.c b/net/mac80211/util.c index a2ba6e2..e278f97 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -792,6 +792,8 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata) break; } + qparam.uapsd = false; + drv_conf_tx(local, queue, &qparam); } } diff --git a/net/mac80211/work.c b/net/mac80211/work.c index 7c5d95b..a74fd6e 100644 --- a/net/mac80211/work.c +++ b/net/mac80211/work.c @@ -202,7 +202,7 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, struct ieee80211_local *local = sdata->local; struct sk_buff *skb; struct ieee80211_mgmt *mgmt; - u8 *pos; + u8 *pos, qos_info; const u8 *ies; size_t offset = 0, noffset; int i, len, count, rates_len, supp_rates_len; @@ -375,6 +375,14 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, } if (wk->assoc.wmm_used && local->hw.queues >= 4) { + if (wk->assoc.uapsd_used) { + qos_info = IEEE80211_DEFAULT_UAPSD_QUEUES; + qos_info |= (IEEE80211_DEFAULT_MAX_SP_LEN << + IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); + } else { + qos_info = 0; + } + pos = skb_put(skb, 9); *pos++ = WLAN_EID_VENDOR_SPECIFIC; *pos++ = 7; /* len */ @@ -384,7 +392,7 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, *pos++ = 2; /* WME */ *pos++ = 0; /* WME info */ *pos++ = 1; /* WME ver */ - *pos++ = 0; + *pos++ = qos_info; } /* add any remaining custom (i.e. vendor specific here) IEs */ -- cgit v1.1 From 50ae0cf15c3da2f6a8e4558de5010923e84736b2 Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Tue, 12 Jan 2010 10:42:39 +0200 Subject: mac80211: add debugfs interface for U-APSD queue configuration Because it's not yet decided how to configure which queues are U-APSD enabled, add a debugfs interface for testing purposes. Signed-off-by: Kalle Valo Signed-off-by: John W. Linville --- net/mac80211/debugfs.c | 94 ++++++++++++++++++++++++++++++++++++++++++++++ net/mac80211/ieee80211_i.h | 14 +++++++ net/mac80211/main.c | 2 + net/mac80211/mlme.c | 2 +- net/mac80211/work.c | 4 +- 5 files changed, 113 insertions(+), 3 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c index e4b5409..b3bc32b 100644 --- a/net/mac80211/debugfs.c +++ b/net/mac80211/debugfs.c @@ -158,6 +158,98 @@ static const struct file_operations noack_ops = { .open = mac80211_open_file_generic }; +static ssize_t uapsd_queues_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + int res; + char buf[10]; + + res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_queues); + + return simple_read_from_buffer(user_buf, count, ppos, buf, res); +} + +static ssize_t uapsd_queues_write(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + unsigned long val; + char buf[10]; + size_t len; + int ret; + + len = min(count, sizeof(buf) - 1); + if (copy_from_user(buf, user_buf, len)) + return -EFAULT; + buf[len] = '\0'; + + ret = strict_strtoul(buf, 0, &val); + + if (ret) + return -EINVAL; + + if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) + return -ERANGE; + + local->uapsd_queues = val; + + return count; +} + +static const struct file_operations uapsd_queues_ops = { + .read = uapsd_queues_read, + .write = uapsd_queues_write, + .open = mac80211_open_file_generic +}; + +static ssize_t uapsd_max_sp_len_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + int res; + char buf[10]; + + res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_max_sp_len); + + return simple_read_from_buffer(user_buf, count, ppos, buf, res); +} + +static ssize_t uapsd_max_sp_len_write(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + unsigned long val; + char buf[10]; + size_t len; + int ret; + + len = min(count, sizeof(buf) - 1); + if (copy_from_user(buf, user_buf, len)) + return -EFAULT; + buf[len] = '\0'; + + ret = strict_strtoul(buf, 0, &val); + + if (ret) + return -EINVAL; + + if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) + return -ERANGE; + + local->uapsd_max_sp_len = val; + + return count; +} + +static const struct file_operations uapsd_max_sp_len_ops = { + .read = uapsd_max_sp_len_read, + .write = uapsd_max_sp_len_write, + .open = mac80211_open_file_generic +}; + static ssize_t queues_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { @@ -314,6 +406,8 @@ void debugfs_hw_add(struct ieee80211_local *local) DEBUGFS_ADD(queues); DEBUGFS_ADD_MODE(reset, 0200); DEBUGFS_ADD(noack); + DEBUGFS_ADD(uapsd_queues); + DEBUGFS_ADD(uapsd_max_sp_len); statsd = debugfs_create_dir("statistics", phyd); diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 3468e37..c18f576 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -808,6 +808,20 @@ struct ieee80211_local { int wifi_wme_noack_test; unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ + /* + * Bitmask of enabled u-apsd queues, + * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association + * to take effect. + */ + unsigned int uapsd_queues; + + /* + * Maximum number of buffered frames AP can deliver during a + * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. + * Needs a new association to take effect. + */ + unsigned int uapsd_max_sp_len; + bool pspolling; bool offchannel_ps_enabled; /* diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 0054bba..ec8f767 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -384,6 +384,8 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; local->user_power_level = -1; + local->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; + local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; INIT_LIST_HEAD(&local->interfaces); mutex_init(&local->iflist_mtx); diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 39c27d8..2746391 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -581,7 +581,7 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local, return; if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) - uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; + uapsd_queues = local->uapsd_queues; count = wmm_param[6] & 0x0f; if (count == ifmgd->wmm_last_param_set) diff --git a/net/mac80211/work.c b/net/mac80211/work.c index a74fd6e..81bd5d5 100644 --- a/net/mac80211/work.c +++ b/net/mac80211/work.c @@ -376,8 +376,8 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, if (wk->assoc.wmm_used && local->hw.queues >= 4) { if (wk->assoc.uapsd_used) { - qos_info = IEEE80211_DEFAULT_UAPSD_QUEUES; - qos_info |= (IEEE80211_DEFAULT_MAX_SP_LEN << + qos_info = local->uapsd_queues; + qos_info |= (local->uapsd_max_sp_len << IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); } else { qos_info = 0; -- cgit v1.1 From 5c1b98a52c3af1044c2d3842af8bae9a89502ca9 Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Tue, 12 Jan 2010 10:42:46 +0200 Subject: mac80211: create tx handler for dynamic ps Currently dynamic ps check is in ieee80211_xmit(), but it's cleaner to have a separate tx handler for this. Also this is a prerequisite for U-APSD client mode which needs to know the queue frame is in. Also need_dynamic_ps() function is embedded to the tx handler. No functional changes expect that the code is run in a later phase than originally. Signed-off-by: Kalle Valo Signed-off-by: John W. Linville --- net/mac80211/tx.c | 81 ++++++++++++++++++++++++++++--------------------------- 1 file changed, 41 insertions(+), 40 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 47ca59e..6fcc85a 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -180,6 +180,46 @@ static int inline is_ieee80211_device(struct ieee80211_local *local, } /* tx handlers */ +static ieee80211_tx_result debug_noinline +ieee80211_tx_h_dynamic_ps(struct ieee80211_tx_data *tx) +{ + struct ieee80211_local *local = tx->local; + + /* driver doesn't support power save */ + if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) + return TX_CONTINUE; + + /* hardware does dynamic power save */ + if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) + return TX_CONTINUE; + + /* dynamic power save disabled */ + if (local->hw.conf.dynamic_ps_timeout <= 0) + return TX_CONTINUE; + + /* we are scanning, don't enable power save */ + if (local->scanning) + return TX_CONTINUE; + + if (!local->ps_sdata) + return TX_CONTINUE; + + /* No point if we're going to suspend */ + if (local->quiescing) + return TX_CONTINUE; + + if (local->hw.conf.flags & IEEE80211_CONF_PS) { + ieee80211_stop_queues_by_reason(&local->hw, + IEEE80211_QUEUE_STOP_REASON_PS); + ieee80211_queue_work(&local->hw, + &local->dynamic_ps_disable_work); + } + + mod_timer(&local->dynamic_ps_timer, jiffies + + msecs_to_jiffies(local->hw.conf.dynamic_ps_timeout)); + + return TX_CONTINUE; +} static ieee80211_tx_result debug_noinline ieee80211_tx_h_check_assoc(struct ieee80211_tx_data *tx) @@ -1223,6 +1263,7 @@ static int invoke_tx_handlers(struct ieee80211_tx_data *tx) goto txh_done; \ } while (0) + CALL_TXH(ieee80211_tx_h_dynamic_ps); CALL_TXH(ieee80211_tx_h_check_assoc); CALL_TXH(ieee80211_tx_h_ps_buf); CALL_TXH(ieee80211_tx_h_select_key); @@ -1405,34 +1446,6 @@ static int ieee80211_skb_resize(struct ieee80211_local *local, return 0; } -static bool need_dynamic_ps(struct ieee80211_local *local) -{ - /* driver doesn't support power save */ - if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) - return false; - - /* hardware does dynamic power save */ - if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) - return false; - - /* dynamic power save disabled */ - if (local->hw.conf.dynamic_ps_timeout <= 0) - return false; - - /* we are scanning, don't enable power save */ - if (local->scanning) - return false; - - if (!local->ps_sdata) - return false; - - /* No point if we're going to suspend */ - if (local->quiescing) - return false; - - return true; -} - static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb) { @@ -1443,18 +1456,6 @@ static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, int headroom; bool may_encrypt; - if (need_dynamic_ps(local)) { - if (local->hw.conf.flags & IEEE80211_CONF_PS) { - ieee80211_stop_queues_by_reason(&local->hw, - IEEE80211_QUEUE_STOP_REASON_PS); - ieee80211_queue_work(&local->hw, - &local->dynamic_ps_disable_work); - } - - mod_timer(&local->dynamic_ps_timer, jiffies + - msecs_to_jiffies(local->hw.conf.dynamic_ps_timeout)); - } - rcu_read_lock(); if (unlikely(sdata->vif.type == NL80211_IFTYPE_MONITOR)) { -- cgit v1.1 From 0c74211d19d83729c209ddcd4dc026c2aedeb29e Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Tue, 12 Jan 2010 10:42:53 +0200 Subject: mac80211: check uapsd state for dynamic power save To make U-APSD client mode effective, we must not wake up from dynamic power save when transmitting frames. So if dynamic power save is enabled, it needs check the queue the transmitted packet is in and decide if we need to wake up or not. In a perfect world, where all packets would have correct QoS tags, U-APSD enabled queues should not trigger wakeup from power save. But in the real world, where very few packets have correct QoS tags, this won't work. For example, if only voip class has U-APSD enabled and we send a packet in voip class, but the packets we receive are in best effort class, we would receive the packets with the legacy power save method. And that would increase latencies too much from a voip application point of view. The workaround is to enable U-APSD for all qeueus and still use dynamic ps wakeup for all other queues except voip. That way we can still save power with a voip application and not sacrifice latency. Normal traffic (in background, best effort or video class) would still trigger wakeup from dynamic power save. Signed-off-by: Kalle Valo Signed-off-by: John W. Linville --- net/mac80211/tx.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'net/mac80211') diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 6fcc85a..daf8104 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -184,6 +184,7 @@ static ieee80211_tx_result debug_noinline ieee80211_tx_h_dynamic_ps(struct ieee80211_tx_data *tx) { struct ieee80211_local *local = tx->local; + struct ieee80211_if_managed *ifmgd; /* driver doesn't support power save */ if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) @@ -208,6 +209,30 @@ ieee80211_tx_h_dynamic_ps(struct ieee80211_tx_data *tx) if (local->quiescing) return TX_CONTINUE; + /* dynamic ps is supported only in managed mode */ + if (tx->sdata->vif.type != NL80211_IFTYPE_STATION) + return TX_CONTINUE; + + ifmgd = &tx->sdata->u.mgd; + + /* + * Don't wakeup from power save if u-apsd is enabled, voip ac has + * u-apsd enabled and the frame is in voip class. This effectively + * means that even if all access categories have u-apsd enabled, in + * practise u-apsd is only used with the voip ac. This is a + * workaround for the case when received voip class packets do not + * have correct qos tag for some reason, due the network or the + * peer application. + * + * Note: local->uapsd_queues access is racy here. If the value is + * changed via debugfs, user needs to reassociate manually to have + * everything in sync. + */ + if ((ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) + && (local->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) + && skb_get_queue_mapping(tx->skb) == 0) + return TX_CONTINUE; + if (local->hw.conf.flags & IEEE80211_CONF_PS) { ieee80211_stop_queues_by_reason(&local->hw, IEEE80211_QUEUE_STOP_REASON_PS); -- cgit v1.1 From 93895757df4ebe22c98b9128b98ebf8cec972c60 Mon Sep 17 00:00:00 2001 From: Benoit Papillault Date: Thu, 14 Jan 2010 23:20:31 +0100 Subject: mac80211: Fixed netif_tx_wake_all_queues in IBSS mode When ieee80211_offchannel_return is called, it needs to re-enabled TX queues that have been stopped in ieee80211_offchannel_stop_beaconing or ieee80211_offchannel_stop_station. It happens if we are doing a scan with an IBSS interface. In this case, the interface stopped transmitting. Signed-off-by: Benoit Papillault Signed-off-by: John W. Linville --- net/mac80211/offchannel.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'net/mac80211') diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c index 1facfeb..c36b191 100644 --- a/net/mac80211/offchannel.c +++ b/net/mac80211/offchannel.c @@ -153,9 +153,11 @@ void ieee80211_offchannel_return(struct ieee80211_local *local, if (sdata->vif.type == NL80211_IFTYPE_STATION) { if (sdata->u.mgd.associated) ieee80211_offchannel_ps_disable(sdata); - netif_tx_wake_all_queues(sdata->dev); } + if (sdata->vif.type != NL80211_IFTYPE_MONITOR) + netif_tx_wake_all_queues(sdata->dev); + /* re-enable beaconing */ if (enable_beaconing && (sdata->vif.type == NL80211_IFTYPE_AP || -- cgit v1.1 From 43d3534344bbdcfa9c61a6b38490cd4cbb2f6bb6 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 15 Jan 2010 03:00:48 +0100 Subject: mac80211: force use_short_slot=true for 5GHz Normally 5GHz does not have a concept of long vs short slot time, however the slot time that it ends up using is the same as for 2.4 GHZ and use_short_slot == true Because of that, it makes more sense to force use_short_slot = true whenever 5 GHz is being used, so that this particular check does not have to be in every single driver that uses this flag. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 7 +++++++ net/mac80211/mlme.c | 2 ++ 2 files changed, 9 insertions(+) (limited to 'net/mac80211') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 8286df5..b0102c5 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1085,6 +1085,13 @@ static int ieee80211_change_bss(struct wiphy *wiphy, params->use_short_preamble; changed |= BSS_CHANGED_ERP_PREAMBLE; } + + if (!sdata->vif.bss_conf.use_short_slot && + sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) { + sdata->vif.bss_conf.use_short_slot = true; + changed |= BSS_CHANGED_ERP_SLOT; + } + if (params->use_short_slot_time >= 0) { sdata->vif.bss_conf.use_short_slot = params->use_short_slot_time; diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 2746391..a82564e 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -670,6 +670,8 @@ static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, } use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); + if (sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) + use_short_slot = true; if (use_protection != bss_conf->use_cts_prot) { bss_conf->use_cts_prot = use_protection; -- cgit v1.1 From 145b6d1a56f224d15c61aa7ecfda9a1171b47b6a Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Fri, 15 Jan 2010 21:44:21 +0800 Subject: mac80211: fix memory leak in ieee80211_send_probe_req This patch fixes memory leak in ieee80211_send_probe_req, which is introduced in 7c12ce8b854df346388ea56d684784e3484012cf: mac80211: use Probe Request template when sending a direct scan The patch is against the latest wireless-test tree. Signed-off-by: Ming Lei Reviewed-by: Kalle Valo Signed-off-by: John W. Linville --- net/mac80211/util.c | 1 + 1 file changed, 1 insertion(+) (limited to 'net/mac80211') diff --git a/net/mac80211/util.c b/net/mac80211/util.c index e278f97..ca170b4 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1028,6 +1028,7 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; ieee80211_tx_skb(sdata, skb); + kfree(buf); } u32 ieee80211_sta_get_rates(struct ieee80211_local *local, -- cgit v1.1