Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:

 1) Add BQL support to via-rhine, from Tino Reichardt.

 2) Integrate SWITCHDEV layer support into the DSA layer, so DSA drivers
    can support hw switch offloading.  From Floria Fainelli.

 3) Allow 'ip address' commands to initiate multicast group join/leave,
    from Madhu Challa.

 4) Many ipv4 FIB lookup optimizations from Alexander Duyck.

 5) Support EBPF in cls_bpf classifier and act_bpf action, from Daniel
    Borkmann.

 6) Remove the ugly compat support in ARP for ugly layers like ax25,
    rose, etc.  And use this to clean up the neigh layer, then use it to
    implement MPLS support.  All from Eric Biederman.

 7) Support L3 forwarding offloading in switches, from Scott Feldman.

 8) Collapse the LOCAL and MAIN ipv4 FIB tables when possible, to speed
    up route lookups even further.  From Alexander Duyck.

 9) Many improvements and bug fixes to the rhashtable implementation,
    from Herbert Xu and Thomas Graf.  In particular, in the case where
    an rhashtable user bulk adds a large number of items into an empty
    table, we expand the table much more sanely.

10) Don't make the tcp_metrics hash table per-namespace, from Eric
    Biederman.

11) Extend EBPF to access SKB fields, from Alexei Starovoitov.

12) Split out new connection request sockets so that they can be
    established in the main hash table.  Much less false sharing since
    hash lookups go direct to the request sockets instead of having to
    go first to the listener then to the request socks hashed
    underneath.  From Eric Dumazet.

13) Add async I/O support for crytpo AF_ALG sockets, from Tadeusz Struk.

14) Support stable privacy address generation for RFC7217 in IPV6.  From
    Hannes Frederic Sowa.

15) Hash network namespace into IP frag IDs, also from Hannes Frederic
    Sowa.

16) Convert PTP get/set methods to use 64-bit time, from Richard
    Cochran.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1816 commits)
  fm10k: Bump driver version to 0.15.2
  fm10k: corrected VF multicast update
  fm10k: mbx_update_max_size does not drop all oversized messages
  fm10k: reset head instead of calling update_max_size
  fm10k: renamed mbx_tx_dropped to mbx_tx_oversized
  fm10k: update xcast mode before synchronizing multicast addresses
  fm10k: start service timer on probe
  fm10k: fix function header comment
  fm10k: comment next_vf_mbx flow
  fm10k: don't handle mailbox events in iov_event path and always process mailbox
  fm10k: use separate workqueue for fm10k driver
  fm10k: Set PF queues to unlimited bandwidth during virtualization
  fm10k: expose tx_timeout_count as an ethtool stat
  fm10k: only increment tx_timeout_count in Tx hang path
  fm10k: remove extraneous "Reset interface" message
  fm10k: separate PF only stats so that VF does not display them
  fm10k: use hw->mac.max_queues for stats
  fm10k: only show actual queues, not the maximum in hardware
  fm10k: allow creation of VLAN on default vid
  fm10k: fix unused warnings
  ...

1 files changed, 132 insertions, 23 deletions

diff --git a/net/mac80211/tdls.c b/net/mac80211/tdls.c
index c9f9752217ac..fff0d864adfa 100644
--- a/net/mac80211/tdls.c
+++ b/net/mac80211/tdls.c
@@ -136,6 +136,24 @@ ieee80211_tdls_add_supp_channels(struct ieee80211_sub_if_data *sdata,
 	*pos = 2 * subband_cnt;
 }
 
+static void ieee80211_tdls_add_oper_classes(struct ieee80211_sub_if_data *sdata,
+					    struct sk_buff *skb)
+{
+	u8 *pos;
+	u8 op_class;
+
+	if (!ieee80211_chandef_to_operating_class(&sdata->vif.bss_conf.chandef,
+						  &op_class))
+		return;
+
+	pos = skb_put(skb, 4);
+	*pos++ = WLAN_EID_SUPPORTED_REGULATORY_CLASSES;
+	*pos++ = 2; /* len */
+
+	*pos++ = op_class;
+	*pos++ = op_class; /* give current operating class as alternate too */
+}
+
 static void ieee80211_tdls_add_bss_coex_ie(struct sk_buff *skb)
 {
 	u8 *pos = (void *)skb_put(skb, 3);
@@ -193,6 +211,17 @@ static void ieee80211_tdls_add_link_ie(struct ieee80211_sub_if_data *sdata,
 	memcpy(lnkid->resp_sta, rsp_addr, ETH_ALEN);
 }
 
+static void
+ieee80211_tdls_add_aid(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
+{
+	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+	u8 *pos = (void *)skb_put(skb, 4);
+
+	*pos++ = WLAN_EID_AID;
+	*pos++ = 2; /* len */
+	put_unaligned_le16(ifmgd->aid, pos);
+}
+
 /* translate numbering in the WMM parameter IE to the mac80211 notation */
 static enum ieee80211_ac_numbers ieee80211_ac_from_wmm(int ac)
 {
@@ -271,21 +300,11 @@ ieee80211_tdls_add_setup_start_ies(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_supported_band *sband;
 	struct ieee80211_sta_ht_cap ht_cap;
+	struct ieee80211_sta_vht_cap vht_cap;
 	struct sta_info *sta = NULL;
 	size_t offset = 0, noffset;
 	u8 *pos;
 
-	rcu_read_lock();
-
-	/* we should have the peer STA if we're already responding */
-	if (action_code == WLAN_TDLS_SETUP_RESPONSE) {
-		sta = sta_info_get(sdata, peer);
-		if (WARN_ON_ONCE(!sta)) {
-			rcu_read_unlock();
-			return;
-		}
-	}
-
 	ieee80211_add_srates_ie(sdata, skb, false, band);
 	ieee80211_add_ext_srates_ie(sdata, skb, false, band);
 	ieee80211_tdls_add_supp_channels(sdata, skb);
@@ -338,6 +357,19 @@ ieee80211_tdls_add_setup_start_ies(struct ieee80211_sub_if_data *sdata,
 		offset = noffset;
 	}
 
+	rcu_read_lock();
+
+	/* we should have the peer STA if we're already responding */
+	if (action_code == WLAN_TDLS_SETUP_RESPONSE) {
+		sta = sta_info_get(sdata, peer);
+		if (WARN_ON_ONCE(!sta)) {
+			rcu_read_unlock();
+			return;
+		}
+	}
+
+	ieee80211_tdls_add_oper_classes(sdata, skb);
+
 	/*
 	 * with TDLS we can switch channels, and HT-caps are not necessarily
 	 * the same on all bands. The specification limits the setup to a
@@ -346,7 +378,9 @@ ieee80211_tdls_add_setup_start_ies(struct ieee80211_sub_if_data *sdata,
 	sband = local->hw.wiphy->bands[band];
 	memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
 
-	if (action_code == WLAN_TDLS_SETUP_REQUEST && ht_cap.ht_supported) {
+	if ((action_code == WLAN_TDLS_SETUP_REQUEST ||
+	     action_code == WLAN_PUB_ACTION_TDLS_DISCOVER_RES) &&
+	    ht_cap.ht_supported) {
 		ieee80211_apply_htcap_overrides(sdata, &ht_cap);
 
 		/* disable SMPS in TDLS initiator */
@@ -368,12 +402,63 @@ ieee80211_tdls_add_setup_start_ies(struct ieee80211_sub_if_data *sdata,
 		ieee80211_ie_build_ht_cap(pos, &ht_cap, ht_cap.cap);
 	}
 
-	rcu_read_unlock();
-
 	if (ht_cap.ht_supported &&
 	    (ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
 		ieee80211_tdls_add_bss_coex_ie(skb);
 
+	ieee80211_tdls_add_link_ie(sdata, skb, peer, initiator);
+
+	/* add any custom IEs that go before VHT capabilities */
+	if (extra_ies_len) {
+		static const u8 before_vht_cap[] = {
+			WLAN_EID_SUPP_RATES,
+			WLAN_EID_COUNTRY,
+			WLAN_EID_EXT_SUPP_RATES,
+			WLAN_EID_SUPPORTED_CHANNELS,
+			WLAN_EID_RSN,
+			WLAN_EID_EXT_CAPABILITY,
+			WLAN_EID_QOS_CAPA,
+			WLAN_EID_FAST_BSS_TRANSITION,
+			WLAN_EID_TIMEOUT_INTERVAL,
+			WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
+			WLAN_EID_MULTI_BAND,
+		};
+		noffset = ieee80211_ie_split(extra_ies, extra_ies_len,
+					     before_vht_cap,
+					     ARRAY_SIZE(before_vht_cap),
+					     offset);
+		pos = skb_put(skb, noffset - offset);
+		memcpy(pos, extra_ies + offset, noffset - offset);
+		offset = noffset;
+	}
+
+	/* build the VHT-cap similarly to the HT-cap */
+	memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
+	if ((action_code == WLAN_TDLS_SETUP_REQUEST ||
+	     action_code == WLAN_PUB_ACTION_TDLS_DISCOVER_RES) &&
+	    vht_cap.vht_supported) {
+		ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
+
+		/* the AID is present only when VHT is implemented */
+		if (action_code == WLAN_TDLS_SETUP_REQUEST)
+			ieee80211_tdls_add_aid(sdata, skb);
+
+		pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
+		ieee80211_ie_build_vht_cap(pos, &vht_cap, vht_cap.cap);
+	} else if (action_code == WLAN_TDLS_SETUP_RESPONSE &&
+		   vht_cap.vht_supported && sta->sta.vht_cap.vht_supported) {
+		/* the peer caps are already intersected with our own */
+		memcpy(&vht_cap, &sta->sta.vht_cap, sizeof(vht_cap));
+
+		/* the AID is present only when VHT is implemented */
+		ieee80211_tdls_add_aid(sdata, skb);
+
+		pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
+		ieee80211_ie_build_vht_cap(pos, &vht_cap, vht_cap.cap);
+	}
+
+	rcu_read_unlock();
+
 	/* add any remaining IEs */
 	if (extra_ies_len) {
 		noffset = extra_ies_len;
@@ -381,7 +466,6 @@ ieee80211_tdls_add_setup_start_ies(struct ieee80211_sub_if_data *sdata,
 		memcpy(pos, extra_ies + offset, noffset - offset);
 	}
 
-	ieee80211_tdls_add_link_ie(sdata, skb, peer, initiator);
 }
 
 static void
@@ -394,6 +478,7 @@ ieee80211_tdls_add_setup_cfm_ies(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	size_t offset = 0, noffset;
 	struct sta_info *sta, *ap_sta;
+	enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
 	u8 *pos;
 
 	rcu_read_lock();
@@ -453,6 +538,21 @@ ieee80211_tdls_add_setup_cfm_ies(struct ieee80211_sub_if_data *sdata,
 		}
 	}
 
+	ieee80211_tdls_add_link_ie(sdata, skb, peer, initiator);
+
+	/* only include VHT-operation if not on the 2.4GHz band */
+	if (band != IEEE80211_BAND_2GHZ && !ap_sta->sta.vht_cap.vht_supported &&
+	    sta->sta.vht_cap.vht_supported) {
+		struct ieee80211_chanctx_conf *chanctx_conf =
+				rcu_dereference(sdata->vif.chanctx_conf);
+		if (!WARN_ON(!chanctx_conf)) {
+			pos = skb_put(skb, 2 +
+				      sizeof(struct ieee80211_vht_operation));
+			ieee80211_ie_build_vht_oper(pos, &sta->sta.vht_cap,
+						    &chanctx_conf->def);
+		}
+	}
+
 	rcu_read_unlock();
 
 	/* add any remaining IEs */
@@ -461,8 +561,6 @@ ieee80211_tdls_add_setup_cfm_ies(struct ieee80211_sub_if_data *sdata,
 		pos = skb_put(skb, noffset - offset);
 		memcpy(pos, extra_ies + offset, noffset - offset);
 	}
-
-	ieee80211_tdls_add_link_ie(sdata, skb, peer, initiator);
 }
 
 static void
@@ -708,8 +806,12 @@ ieee80211_tdls_build_mgmt_packet_data(struct ieee80211_sub_if_data *sdata,
 			       26 + /* max(WMM-info, WMM-param) */
 			       2 + max(sizeof(struct ieee80211_ht_cap),
 				       sizeof(struct ieee80211_ht_operation)) +
+			       2 + max(sizeof(struct ieee80211_vht_cap),
+				       sizeof(struct ieee80211_vht_operation)) +
 			       50 + /* supported channels */
 			       3 + /* 40/20 BSS coex */
+			       4 + /* AID */
+			       4 + /* oper classes */
 			       extra_ies_len +
 			       sizeof(struct ieee80211_tdls_lnkie));
 	if (!skb)
@@ -907,7 +1009,7 @@ ieee80211_tdls_mgmt_setup(struct wiphy *wiphy, struct net_device *dev,
 	if (!is_zero_ether_addr(sdata->u.mgd.tdls_peer) &&
 	    !ether_addr_equal(sdata->u.mgd.tdls_peer, peer)) {
 		ret = -EBUSY;
-		goto exit;
+		goto out_unlock;
 	}
 
 	/*
@@ -922,27 +1024,34 @@ ieee80211_tdls_mgmt_setup(struct wiphy *wiphy, struct net_device *dev,
 		if (!sta_info_get(sdata, peer)) {
 			rcu_read_unlock();
 			ret = -ENOLINK;
-			goto exit;
+			goto out_unlock;
 		}
 		rcu_read_unlock();
 	}
 
 	ieee80211_flush_queues(local, sdata, false);
+	memcpy(sdata->u.mgd.tdls_peer, peer, ETH_ALEN);
+	mutex_unlock(&local->mtx);
 
+	/* we cannot take the mutex while preparing the setup packet */
 	ret = ieee80211_tdls_prep_mgmt_packet(wiphy, dev, peer, action_code,
 					      dialog_token, status_code,
 					      peer_capability, initiator,
 					      extra_ies, extra_ies_len, 0,
 					      NULL);
-	if (ret < 0)
-		goto exit;
+	if (ret < 0) {
+		mutex_lock(&local->mtx);
+		eth_zero_addr(sdata->u.mgd.tdls_peer);
+		mutex_unlock(&local->mtx);
+		return ret;
+	}
 
-	memcpy(sdata->u.mgd.tdls_peer, peer, ETH_ALEN);
 	ieee80211_queue_delayed_work(&sdata->local->hw,
 				     &sdata->u.mgd.tdls_peer_del_work,
 				     TDLS_PEER_SETUP_TIMEOUT);
+	return 0;
 
-exit:
+out_unlock:
 	mutex_unlock(&local->mtx);
 	return ret;
 }