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

Pull networking updates from David Miller:
 "Here is my initial pull request for the networking subsystem during
  this merge window:

   1) Support for ESN in AH (RFC 4302) from Fan Du.

   2) Add full kernel doc for ethtool command structures, from Ben
      Hutchings.

   3) Add BCM7xxx PHY driver, from Florian Fainelli.

   4) Export computed TCP rate information in netlink socket dumps, from
      Eric Dumazet.

   5) Allow IPSEC SA to be dumped partially using a filter, from Nicolas
      Dichtel.

   6) Convert many drivers to pci_enable_msix_range(), from Alexander
      Gordeev.

   7) Record SKB timestamps more efficiently, from Eric Dumazet.

   8) Switch to microsecond resolution for TCP round trip times, also
      from Eric Dumazet.

   9) Clean up and fix 6lowpan fragmentation handling by making use of
      the existing inet_frag api for it's implementation.

  10) Add TX grant mapping to xen-netback driver, from Zoltan Kiss.

  11) Auto size SKB lengths when composing netlink messages based upon
      past message sizes used, from Eric Dumazet.

  12) qdisc dumps can take a long time, add a cond_resched(), From Eric
      Dumazet.

  13) Sanitize netpoll core and drivers wrt.  SKB handling semantics.
      Get rid of never-used-in-tree netpoll RX handling.  From Eric W
      Biederman.

  14) Support inter-address-family and namespace changing in VTI tunnel
      driver(s).  From Steffen Klassert.

  15) Add Altera TSE driver, from Vince Bridgers.

  16) Optimizing csum_replace2() so that it doesn't adjust the checksum
      by checksumming the entire header, from Eric Dumazet.

  17) Expand BPF internal implementation for faster interpreting, more
      direct translations into JIT'd code, and much cleaner uses of BPF
      filtering in non-socket ocntexts.  From Daniel Borkmann and Alexei
      Starovoitov"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1976 commits)
  netpoll: Use skb_irq_freeable to make zap_completion_queue safe.
  net: Add a test to see if a skb is freeable in irq context
  qlcnic: Fix build failure due to undefined reference to `vxlan_get_rx_port'
  net: ptp: move PTP classifier in its own file
  net: sxgbe: make "core_ops" static
  net: sxgbe: fix logical vs bitwise operation
  net: sxgbe: sxgbe_mdio_register() frees the bus
  Call efx_set_channels() before efx->type->dimension_resources()
  xen-netback: disable rogue vif in kthread context
  net/mlx4: Set proper build dependancy with vxlan
  be2net: fix build dependency on VxLAN
  mac802154: make csma/cca parameters per-wpan
  mac802154: allow only one WPAN to be up at any given time
  net: filter: minor: fix kdoc in __sk_run_filter
  netlink: don't compare the nul-termination in nla_strcmp
  can: c_can: Avoid led toggling for every packet.
  can: c_can: Simplify TX interrupt cleanup
  can: c_can: Store dlc private
  can: c_can: Reduce register access
  can: c_can: Make the code readable
  ...

1 files changed, 19 insertions, 12 deletions

diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index d1ed4aebbbb7..7d09a712cb1f 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -659,9 +659,6 @@ static bool cfg80211_combine_bsses(struct cfg80211_registered_device *dev,
 			continue;
 		if (ssidlen && ie[1] != ssidlen)
 			continue;
-		/* that would be odd ... */
-		if (bss->pub.beacon_ies)
-			continue;
 		if (WARN_ON_ONCE(bss->pub.hidden_beacon_bss))
 			continue;
 		if (WARN_ON_ONCE(!list_empty(&bss->hidden_list)))
@@ -680,7 +677,8 @@ static bool cfg80211_combine_bsses(struct cfg80211_registered_device *dev,
 /* Returned bss is reference counted and must be cleaned up appropriately. */
 static struct cfg80211_internal_bss *
 cfg80211_bss_update(struct cfg80211_registered_device *dev,
-		    struct cfg80211_internal_bss *tmp)
+		    struct cfg80211_internal_bss *tmp,
+		    bool signal_valid)
 {
 	struct cfg80211_internal_bss *found = NULL;
 
@@ -765,7 +763,12 @@ cfg80211_bss_update(struct cfg80211_registered_device *dev,
 		}
 
 		found->pub.beacon_interval = tmp->pub.beacon_interval;
-		found->pub.signal = tmp->pub.signal;
+		/*
+		 * don't update the signal if beacon was heard on
+		 * adjacent channel.
+		 */
+		if (signal_valid)
+			found->pub.signal = tmp->pub.signal;
 		found->pub.capability = tmp->pub.capability;
 		found->ts = tmp->ts;
 	} else {
@@ -869,13 +872,14 @@ cfg80211_get_bss_channel(struct wiphy *wiphy, const u8 *ie, size_t ielen,
 /* Returned bss is reference counted and must be cleaned up appropriately. */
 struct cfg80211_bss*
 cfg80211_inform_bss_width(struct wiphy *wiphy,
-			  struct ieee80211_channel *channel,
+			  struct ieee80211_channel *rx_channel,
 			  enum nl80211_bss_scan_width scan_width,
 			  const u8 *bssid, u64 tsf, u16 capability,
 			  u16 beacon_interval, const u8 *ie, size_t ielen,
 			  s32 signal, gfp_t gfp)
 {
 	struct cfg80211_bss_ies *ies;
+	struct ieee80211_channel *channel;
 	struct cfg80211_internal_bss tmp = {}, *res;
 
 	if (WARN_ON(!wiphy))
@@ -885,7 +889,7 @@ cfg80211_inform_bss_width(struct wiphy *wiphy,
 			(signal < 0 || signal > 100)))
 		return NULL;
 
-	channel = cfg80211_get_bss_channel(wiphy, ie, ielen, channel);
+	channel = cfg80211_get_bss_channel(wiphy, ie, ielen, rx_channel);
 	if (!channel)
 		return NULL;
 
@@ -913,7 +917,8 @@ cfg80211_inform_bss_width(struct wiphy *wiphy,
 	rcu_assign_pointer(tmp.pub.beacon_ies, ies);
 	rcu_assign_pointer(tmp.pub.ies, ies);
 
-	res = cfg80211_bss_update(wiphy_to_dev(wiphy), &tmp);
+	res = cfg80211_bss_update(wiphy_to_dev(wiphy), &tmp,
+				  rx_channel == channel);
 	if (!res)
 		return NULL;
 
@@ -929,20 +934,21 @@ EXPORT_SYMBOL(cfg80211_inform_bss_width);
 /* Returned bss is reference counted and must be cleaned up appropriately. */
 struct cfg80211_bss *
 cfg80211_inform_bss_width_frame(struct wiphy *wiphy,
-				struct ieee80211_channel *channel,
+				struct ieee80211_channel *rx_channel,
 				enum nl80211_bss_scan_width scan_width,
 				struct ieee80211_mgmt *mgmt, size_t len,
 				s32 signal, gfp_t gfp)
 {
 	struct cfg80211_internal_bss tmp = {}, *res;
 	struct cfg80211_bss_ies *ies;
+	struct ieee80211_channel *channel;
 	size_t ielen = len - offsetof(struct ieee80211_mgmt,
 				      u.probe_resp.variable);
 
 	BUILD_BUG_ON(offsetof(struct ieee80211_mgmt, u.probe_resp.variable) !=
 			offsetof(struct ieee80211_mgmt, u.beacon.variable));
 
-	trace_cfg80211_inform_bss_width_frame(wiphy, channel, scan_width, mgmt,
+	trace_cfg80211_inform_bss_width_frame(wiphy, rx_channel, scan_width, mgmt,
 					      len, signal);
 
 	if (WARN_ON(!mgmt))
@@ -959,7 +965,7 @@ cfg80211_inform_bss_width_frame(struct wiphy *wiphy,
 		return NULL;
 
 	channel = cfg80211_get_bss_channel(wiphy, mgmt->u.beacon.variable,
-					   ielen, channel);
+					   ielen, rx_channel);
 	if (!channel)
 		return NULL;
 
@@ -983,7 +989,8 @@ cfg80211_inform_bss_width_frame(struct wiphy *wiphy,
 	tmp.pub.beacon_interval = le16_to_cpu(mgmt->u.probe_resp.beacon_int);
 	tmp.pub.capability = le16_to_cpu(mgmt->u.probe_resp.capab_info);
 
-	res = cfg80211_bss_update(wiphy_to_dev(wiphy), &tmp);
+	res = cfg80211_bss_update(wiphy_to_dev(wiphy), &tmp,
+				  rx_channel == channel);
 	if (!res)
 		return NULL;