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

Pull networking update from David Miller:

 1) Checkpoint/restarted TCP sockets now can properly propagate the TCP
    timestamp offset.  From Andrey Vagin.

 2) VMWARE VM VSOCK layer, from Andy King.

 3) Much improved support for virtual functions and SR-IOV in bnx2x,
    from Ariel ELior.

 4) All protocols on ipv4 and ipv6 are now network namespace aware, and
    all the compatability checks for initial-namespace-only protocols is
    removed.  Thanks to Tom Parkin for helping deal with the last major
    holdout, L2TP.

 5) IPV6 support in netpoll and network namespace support in pktgen,
    from Cong Wang.

 6) Multiple Registration Protocol (MRP) and Multiple VLAN Registration
    Protocol (MVRP) support, from David Ward.

 7) Compute packet lengths more accurately in the packet scheduler, from
    Eric Dumazet.

 8) Use per-task page fragment allocator in skb_append_datato_frags(),
    also from Eric Dumazet.

 9) Add support for connection tracking labels in netfilter, from
    Florian Westphal.

10) Fix default multicast group joining on ipv6, and add anti-spoofing
    checks to 6to4 and 6rd.  From Hannes Frederic Sowa.

11) Make ipv4/ipv6 fragmentation memory limits more reasonable in modern
    times, rearrange inet frag datastructures for better cacheline
    locality, and move more operations outside of locking.  From Jesper
    Dangaard Brouer.

12) Instead of strict master <--> slave relationships, allow arbitrary
    scenerios with "upper device lists".  From Jiri Pirko.

13) Improve rate limiting accuracy in TBF and act_police, also from Jiri
    Pirko.

14) Add a BPF filter netfilter match target, from Willem de Bruijn.

15) Orphan and delete a bunch of pre-historic networking drivers from
    Paul Gortmaker.

16) Add TSO support for GRE tunnels, from Pravin B SHelar.  Although
    this still needs some minor bug fixing before it's %100 correct in
    all cases.

17) Handle unresolved IPSEC states like ARP, with a resolution packet
    queue.  From Steffen Klassert.

18) Remove TCP Appropriate Byte Count support (ABC), from Stephen
    Hemminger.  This was long overdue.

19) Support SO_REUSEPORT, from Tom Herbert.

20) Allow locking a socket BPF filter, so that it cannot change after a
    process drops capabilities.

21) Add VLAN filtering to bridge, from Vlad Yasevich.

22) Bring ipv6 on-par with ipv4 and do not cache neighbour entries in
    the ipv6 routes, from YOSHIFUJI Hideaki.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1538 commits)
  ipv6: fix race condition regarding dst->expires and dst->from.
  net: fix a wrong assignment in skb_split()
  ip_gre: remove an extra dst_release()
  ppp: set qdisc_tx_busylock to avoid LOCKDEP splat
  atl1c: restore buffer state
  net: fix a build failure when !CONFIG_PROC_FS
  net: ipv4: fix waring -Wunused-variable
  net: proc: fix build failed when procfs is not configured
  Revert "xen: netback: remove redundant xenvif_put"
  net: move procfs code to net/core/net-procfs.c
  qmi_wwan, cdc-ether: add ADU960S
  bonding: set sysfs device_type to 'bond'
  bonding: fix bond_release_all inconsistencies
  b44: use netdev_alloc_skb_ip_align()
  xen: netback: remove redundant xenvif_put
  net: fec: Do a sanity check on the gpio number
  ip_gre: propogate target device GSO capability to the tunnel device
  ip_gre: allow CSUM capable devices to handle packets
  bonding: Fix initialize after use for 3ad machine state spinlock
  bonding: Fix race condition between bond_enslave() and bond_3ad_update_lacp_rate()
  ...

1 files changed, 110 insertions, 52 deletions

diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 5e8123ee63f..caddca35d68 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -58,7 +58,7 @@ void cfg80211_send_rx_assoc(struct net_device *dev, struct cfg80211_bss *bss,
 	 */
 	if (status_code != WLAN_STATUS_SUCCESS && wdev->conn &&
 	    cfg80211_sme_failed_reassoc(wdev)) {
-		cfg80211_put_bss(bss);
+		cfg80211_put_bss(wiphy, bss);
 		goto out;
 	}
 
@@ -70,7 +70,7 @@ void cfg80211_send_rx_assoc(struct net_device *dev, struct cfg80211_bss *bss,
 		 * do not call connect_result() now because the
 		 * sme will schedule work that does it later.
 		 */
-		cfg80211_put_bss(bss);
+		cfg80211_put_bss(wiphy, bss);
 		goto out;
 	}
 
@@ -108,7 +108,7 @@ void __cfg80211_send_deauth(struct net_device *dev,
 	if (wdev->current_bss &&
 	    ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) {
 		cfg80211_unhold_bss(wdev->current_bss);
-		cfg80211_put_bss(&wdev->current_bss->pub);
+		cfg80211_put_bss(wiphy, &wdev->current_bss->pub);
 		wdev->current_bss = NULL;
 		was_current = true;
 	}
@@ -164,7 +164,7 @@ void __cfg80211_send_disassoc(struct net_device *dev,
 	    ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) {
 		cfg80211_sme_disassoc(dev, wdev->current_bss);
 		cfg80211_unhold_bss(wdev->current_bss);
-		cfg80211_put_bss(&wdev->current_bss->pub);
+		cfg80211_put_bss(wiphy, &wdev->current_bss->pub);
 		wdev->current_bss = NULL;
 	} else
 		WARN_ON(1);
@@ -324,7 +324,7 @@ int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 	err = rdev_auth(rdev, dev, &req);
 
 out:
-	cfg80211_put_bss(req.bss);
+	cfg80211_put_bss(&rdev->wiphy, req.bss);
 	return err;
 }
 
@@ -432,7 +432,7 @@ out:
 	if (err) {
 		if (was_connected)
 			wdev->sme_state = CFG80211_SME_CONNECTED;
-		cfg80211_put_bss(req.bss);
+		cfg80211_put_bss(&rdev->wiphy, req.bss);
 	}
 
 	return err;
@@ -514,7 +514,7 @@ static int __cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
 	if (wdev->sme_state != CFG80211_SME_CONNECTED)
 		return -ENOTCONN;
 
-	if (WARN_ON(!wdev->current_bss))
+	if (WARN(!wdev->current_bss, "sme_state=%d\n", wdev->sme_state))
 		return -ENOTCONN;
 
 	memset(&req, 0, sizeof(req));
@@ -572,7 +572,7 @@ void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
 
 	if (wdev->current_bss) {
 		cfg80211_unhold_bss(wdev->current_bss);
-		cfg80211_put_bss(&wdev->current_bss->pub);
+		cfg80211_put_bss(&rdev->wiphy, &wdev->current_bss->pub);
 		wdev->current_bss = NULL;
 	}
 }
@@ -988,64 +988,122 @@ void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
 }
 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
 
-void cfg80211_ch_switch_notify(struct net_device *dev,
-			       struct cfg80211_chan_def *chandef)
+void cfg80211_dfs_channels_update_work(struct work_struct *work)
 {
-	struct wireless_dev *wdev = dev->ieee80211_ptr;
-	struct wiphy *wiphy = wdev->wiphy;
-	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+	struct delayed_work *delayed_work;
+	struct cfg80211_registered_device *rdev;
+	struct cfg80211_chan_def chandef;
+	struct ieee80211_supported_band *sband;
+	struct ieee80211_channel *c;
+	struct wiphy *wiphy;
+	bool check_again = false;
+	unsigned long timeout, next_time = 0;
+	int bandid, i;
+
+	delayed_work = container_of(work, struct delayed_work, work);
+	rdev = container_of(delayed_work, struct cfg80211_registered_device,
+			    dfs_update_channels_wk);
+	wiphy = &rdev->wiphy;
+
+	mutex_lock(&cfg80211_mutex);
+	for (bandid = 0; bandid < IEEE80211_NUM_BANDS; bandid++) {
+		sband = wiphy->bands[bandid];
+		if (!sband)
+			continue;
 
-	trace_cfg80211_ch_switch_notify(dev, chandef);
+		for (i = 0; i < sband->n_channels; i++) {
+			c = &sband->channels[i];
 
-	wdev_lock(wdev);
+			if (c->dfs_state != NL80211_DFS_UNAVAILABLE)
+				continue;
 
-	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
-		    wdev->iftype != NL80211_IFTYPE_P2P_GO))
-		goto out;
+			timeout = c->dfs_state_entered +
+				  IEEE80211_DFS_MIN_NOP_TIME_MS;
 
-	wdev->channel = chandef->chan;
-	nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
-out:
-	wdev_unlock(wdev);
-	return;
+			if (time_after_eq(jiffies, timeout)) {
+				c->dfs_state = NL80211_DFS_USABLE;
+				cfg80211_chandef_create(&chandef, c,
+							NL80211_CHAN_NO_HT);
+
+				nl80211_radar_notify(rdev, &chandef,
+						     NL80211_RADAR_NOP_FINISHED,
+						     NULL, GFP_ATOMIC);
+				continue;
+			}
+
+			if (!check_again)
+				next_time = timeout - jiffies;
+			else
+				next_time = min(next_time, timeout - jiffies);
+			check_again = true;
+		}
+	}
+	mutex_unlock(&cfg80211_mutex);
+
+	/* reschedule if there are other channels waiting to be cleared again */
+	if (check_again)
+		queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk,
+				   next_time);
 }
-EXPORT_SYMBOL(cfg80211_ch_switch_notify);
 
-bool cfg80211_rx_spurious_frame(struct net_device *dev,
-				const u8 *addr, gfp_t gfp)
+
+void cfg80211_radar_event(struct wiphy *wiphy,
+			  struct cfg80211_chan_def *chandef,
+			  gfp_t gfp)
 {
-	struct wireless_dev *wdev = dev->ieee80211_ptr;
-	bool ret;
+	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+	unsigned long timeout;
 
-	trace_cfg80211_rx_spurious_frame(dev, addr);
+	trace_cfg80211_radar_event(wiphy, chandef);
 
-	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
-		    wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
-		trace_cfg80211_return_bool(false);
-		return false;
-	}
-	ret = nl80211_unexpected_frame(dev, addr, gfp);
-	trace_cfg80211_return_bool(ret);
-	return ret;
+	/* only set the chandef supplied channel to unavailable, in
+	 * case the radar is detected on only one of multiple channels
+	 * spanned by the chandef.
+	 */
+	cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_UNAVAILABLE);
+
+	timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_NOP_TIME_MS);
+	queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk,
+			   timeout);
+
+	nl80211_radar_notify(rdev, chandef, NL80211_RADAR_DETECTED, NULL, gfp);
 }
-EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
+EXPORT_SYMBOL(cfg80211_radar_event);
 
-bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
-					const u8 *addr, gfp_t gfp)
+void cfg80211_cac_event(struct net_device *netdev,
+			enum nl80211_radar_event event, gfp_t gfp)
 {
-	struct wireless_dev *wdev = dev->ieee80211_ptr;
-	bool ret;
+	struct wireless_dev *wdev = netdev->ieee80211_ptr;
+	struct wiphy *wiphy = wdev->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+	struct cfg80211_chan_def chandef;
+	unsigned long timeout;
 
-	trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
+	trace_cfg80211_cac_event(netdev, event);
 
-	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
-		    wdev->iftype != NL80211_IFTYPE_P2P_GO &&
-		    wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
-		trace_cfg80211_return_bool(false);
-		return false;
+	if (WARN_ON(!wdev->cac_started))
+		return;
+
+	if (WARN_ON(!wdev->channel))
+		return;
+
+	cfg80211_chandef_create(&chandef, wdev->channel, NL80211_CHAN_NO_HT);
+
+	switch (event) {
+	case NL80211_RADAR_CAC_FINISHED:
+		timeout = wdev->cac_start_time +
+			  msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
+		WARN_ON(!time_after_eq(jiffies, timeout));
+		cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_AVAILABLE);
+		break;
+	case NL80211_RADAR_CAC_ABORTED:
+		break;
+	default:
+		WARN_ON(1);
+		return;
 	}
-	ret = nl80211_unexpected_4addr_frame(dev, addr, gfp);
-	trace_cfg80211_return_bool(ret);
-	return ret;
+	wdev->cac_started = false;
+
+	nl80211_radar_notify(rdev, &chandef, event, netdev, gfp);
 }
-EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
+EXPORT_SYMBOL(cfg80211_cac_event);