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Commit 48b810d9 authored by David S. Miller's avatar David S. Miller
Browse files

Merge tag 'mac80211-for-davem-2015-03-16' of... 

Merge tag 'mac80211-for-davem-2015-03-16' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211



Johannes Berg says:

====================
Here are a few fixes that I'd like to still get in:
 * disable U-APSD for better interoperability, from Michal Kazior
 * drop unencrypted frames in mesh forwarding, from Bob Copeland
 * treat non-QoS/WMM HT stations as non-HT, to fix confusion when
   they connect and then get QoS packets anyway due to HT
 * fix counting interfaces for combination checks, otherwise the
   interface combinations aren't properly enforced (from Andrei)
 * fix pure ECSA by reacting to the IE change
 * ignore erroneous (E)CSA to the current channel which sometimes
   happens due to AP/GO bugs
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents ca00942a f84eaa10

net/mac80211/ieee80211_i.h

+18 −6
Original line number Diff line number Diff line
@@ -58,13 +58,24 @@ struct ieee80211_local; 
#define IEEE80211_UNSET_POWER_LEVEL	INT_MIN



/*

 * Some APs experience problems when working with U-APSD. Decrease the

 * probability of that happening by using legacy mode for all ACs but VO.

 * The AP that caused us trouble was a Cisco 4410N. It ignores our

 * setting, and always treats non-VO ACs as legacy.

 * Some APs experience problems when working with U-APSD. Decreasing the

 * probability of that happening by using legacy mode for all ACs but VO isn't

 * enough.

 *

 * Cisco 4410N originally forced us to enable VO by default only because it

 * treated non-VO ACs as legacy.

 *

 * However some APs (notably Netgear R7000) silently reclassify packets to

 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval

 * clients would never see some frames (e.g. ARP responses) or would fetch them

 * accidentally after a long time.

 *

 * It makes little sense to enable u-APSD queues by default because it needs

 * userspace applications to be aware of it to actually take advantage of the

 * possible additional powersavings. Implicitly depending on driver autotrigger

 * frame support doesn't make much sense.

 */

#define IEEE80211_DEFAULT_UAPSD_QUEUES \

	IEEE80211_WMM_IE_STA_QOSINFO_AC_VO

#define IEEE80211_DEFAULT_UAPSD_QUEUES 0



#define IEEE80211_DEFAULT_MAX_SP_LEN		\

	IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
@@ -453,6 +464,7 @@ struct ieee80211_if_managed { 
	unsigned int flags;



	bool csa_waiting_bcn;

	bool csa_ignored_same_chan;



	bool beacon_crc_valid;

	u32 beacon_crc;

net/mac80211/mlme.c

+15 −1
Original line number Diff line number Diff line
@@ -1150,6 +1150,17 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 
		return;

	}



	if (cfg80211_chandef_identical(&csa_ie.chandef,

				       &sdata->vif.bss_conf.chandef)) {

		if (ifmgd->csa_ignored_same_chan)

			return;

		sdata_info(sdata,

			   "AP %pM tries to chanswitch to same channel, ignore\n",

			   ifmgd->associated->bssid);

		ifmgd->csa_ignored_same_chan = true;

		return;

	}



	mutex_lock(&local->mtx);

	mutex_lock(&local->chanctx_mtx);

	conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
@@ -1210,6 +1221,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 
	sdata->vif.csa_active = true;

	sdata->csa_chandef = csa_ie.chandef;

	sdata->csa_block_tx = csa_ie.mode;

	ifmgd->csa_ignored_same_chan = false;



	if (sdata->csa_block_tx)

		ieee80211_stop_vif_queues(local, sdata,
@@ -2090,6 +2102,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, 


	sdata->vif.csa_active = false;

	ifmgd->csa_waiting_bcn = false;

	ifmgd->csa_ignored_same_chan = false;

	if (sdata->csa_block_tx) {

		ieee80211_wake_vif_queues(local, sdata,

					  IEEE80211_QUEUE_STOP_REASON_CSA);
@@ -3204,7 +3217,8 @@ static const u64 care_about_ies = 
	(1ULL << WLAN_EID_CHANNEL_SWITCH) |

	(1ULL << WLAN_EID_PWR_CONSTRAINT) |

	(1ULL << WLAN_EID_HT_CAPABILITY) |

	(1ULL << WLAN_EID_HT_OPERATION);

	(1ULL << WLAN_EID_HT_OPERATION) |

	(1ULL << WLAN_EID_EXT_CHANSWITCH_ANN);



static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,

				     struct ieee80211_mgmt *mgmt, size_t len,

net/mac80211/rx.c

+3 −0
Original line number Diff line number Diff line
@@ -2214,6 +2214,9 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx) 
	hdr = (struct ieee80211_hdr *) skb->data;

	mesh_hdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);



	if (ieee80211_drop_unencrypted(rx, hdr->frame_control))

		return RX_DROP_MONITOR;



	/* frame is in RMC, don't forward */

	if (ieee80211_is_data(hdr->frame_control) &&

	    is_multicast_ether_addr(hdr->addr1) &&

net/mac80211/util.c

+1 −1
Original line number Diff line number Diff line
@@ -3178,7 +3178,7 @@ int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 
		wdev_iter = &sdata_iter->wdev;



		if (sdata_iter == sdata ||

		    rcu_access_pointer(sdata_iter->vif.chanctx_conf) == NULL ||

		    !ieee80211_sdata_running(sdata_iter) ||

		    local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype))

			continue;

net/wireless/nl80211.c

+10 −0
Original line number Diff line number Diff line
@@ -4400,6 +4400,16 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 
	if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))

		return -EINVAL;



	/* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT

	 * as userspace might just pass through the capabilities from the IEs

	 * directly, rather than enforcing this restriction and returning an

	 * error in this case.

	 */

	if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {

		params.ht_capa = NULL;

		params.vht_capa = NULL;

	}



	/* When you run into this, adjust the code below for the new flag */

	BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);