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, 26 deletions

diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 2796a198728f..06d28787945b 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -220,7 +220,6 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 {
 	struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
 	struct ieee80211_local *local = sdata->local;
-	struct ieee80211_supported_band *sband;
 	struct ieee80211_mgmt *mgmt;
 	struct cfg80211_bss *bss;
 	u32 bss_change;
@@ -284,6 +283,11 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 
 	err = cfg80211_chandef_dfs_required(sdata->local->hw.wiphy,
 					    &chandef);
+	if (err < 0) {
+		sdata_info(sdata,
+			   "Failed to join IBSS, invalid chandef\n");
+		return;
+	}
 	if (err > 0) {
 		if (!ifibss->userspace_handles_dfs) {
 			sdata_info(sdata,
@@ -294,7 +298,6 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 	}
 
 	mutex_lock(&local->mtx);
-	ieee80211_vif_release_channel(sdata);
 	if (ieee80211_vif_use_channel(sdata, &chandef,
 				      ifibss->fixed_channel ?
 					IEEE80211_CHANCTX_SHARED :
@@ -303,12 +306,11 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 		mutex_unlock(&local->mtx);
 		return;
 	}
+	sdata->radar_required = radar_required;
 	mutex_unlock(&local->mtx);
 
 	memcpy(ifibss->bssid, bssid, ETH_ALEN);
 
-	sband = local->hw.wiphy->bands[chan->band];
-
 	presp = ieee80211_ibss_build_presp(sdata, beacon_int, basic_rates,
 					   capability, tsf, &chandef,
 					   &have_higher_than_11mbit, NULL);
@@ -318,7 +320,6 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 	rcu_assign_pointer(ifibss->presp, presp);
 	mgmt = (void *)presp->head;
 
-	sdata->radar_required = radar_required;
 	sdata->vif.bss_conf.enable_beacon = true;
 	sdata->vif.bss_conf.beacon_int = beacon_int;
 	sdata->vif.bss_conf.basic_rates = basic_rates;
@@ -386,7 +387,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 					      presp->head_len, 0, GFP_KERNEL);
 	cfg80211_put_bss(local->hw.wiphy, bss);
 	netif_carrier_on(sdata->dev);
-	cfg80211_ibss_joined(sdata->dev, ifibss->bssid, GFP_KERNEL);
+	cfg80211_ibss_joined(sdata->dev, ifibss->bssid, chan, GFP_KERNEL);
 }
 
 static void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
@@ -521,12 +522,6 @@ int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
 	if (old_presp)
 		kfree_rcu(old_presp, rcu_head);
 
-	/* it might not send the beacon for a while. send an action frame
-	 * immediately to announce the channel switch.
-	 */
-	if (csa_settings)
-		ieee80211_send_action_csa(sdata, csa_settings);
-
 	return BSS_CHANGED_BEACON;
  out:
 	return ret;
@@ -536,7 +531,7 @@ int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata)
 {
 	struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
 	struct cfg80211_bss *cbss;
-	int err;
+	int err, changed = 0;
 	u16 capability;
 
 	sdata_assert_lock(sdata);
@@ -568,10 +563,9 @@ int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata)
 	if (err < 0)
 		return err;
 
-	if (err)
-		ieee80211_bss_info_change_notify(sdata, err);
+	changed |= err;
 
-	return 0;
+	return changed;
 }
 
 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata)
@@ -799,6 +793,8 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata,
 	int err;
 	u32 sta_flags;
 
+	sdata_assert_lock(sdata);
+
 	sta_flags = IEEE80211_STA_DISABLE_VHT;
 	switch (ifibss->chandef.width) {
 	case NL80211_CHAN_WIDTH_5:
@@ -995,7 +991,6 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 				  struct ieee802_11_elems *elems)
 {
 	struct ieee80211_local *local = sdata->local;
-	int freq;
 	struct cfg80211_bss *cbss;
 	struct ieee80211_bss *bss;
 	struct sta_info *sta;
@@ -1007,15 +1002,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band];
 	bool rates_updated = false;
 
-	if (elems->ds_params)
-		freq = ieee80211_channel_to_frequency(elems->ds_params[0],
-						      band);
-	else
-		freq = rx_status->freq;
-
-	channel = ieee80211_get_channel(local->hw.wiphy, freq);
-
-	if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
+	channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq);
+	if (!channel)
 		return;
 
 	if (sdata->vif.type == NL80211_IFTYPE_ADHOC &&
@@ -1468,6 +1456,11 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
 	memcpy(((struct ieee80211_mgmt *) skb->data)->da, mgmt->sa, ETH_ALEN);
 	ibss_dbg(sdata, "Sending ProbeResp to %pM\n", mgmt->sa);
 	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
+
+	/* avoid excessive retries for probe request to wildcard SSIDs */
+	if (pos[1] == 0)
+		IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_NO_ACK;
+
 	ieee80211_tx_skb(sdata, skb);
 }