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

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  net: Silence seq_scale() unused warning
  ipv4:correct description for tcp_max_syn_backlog
  pasemi_mac: Fix building as module
  netback: Fix alert message.
  r8169: fix Rx index race between FIFO overflow recovery and NAPI handler.
  r8169: Rx FIFO overflow fixes.
  ipv4: Fix peer validation on cached lookup.
  ipv4: make sure RTO_ONLINK is saved in routing cache
  iwlwifi: change the default behavior of watchdog timer
  iwlwifi: do not re-configure HT40 after associated
  iwlagn: fix HW crypto for TX-only keys
  Revert "mac80211: clear sta.drv_priv on reconfiguration"
  mac80211: fill rate filter for internal scan requests
  cfg80211: amend regulatory NULL dereference fix
  cfg80211: fix race on init and driver registration

Documentation/networking/ip-sysctl.txt

@@ -282,11 +282,11 @@ tcp_max_ssthresh - INTEGER
 	Default: 0 (off)
 
 tcp_max_syn_backlog - INTEGER
-	Maximal number of remembered connection requests, which are
+	Maximal number of remembered connection requests, which have not
-	still did not receive an acknowledgment from connecting client.
+	received an acknowledgment from connecting client.
-	Default value is 1024 for systems with more than 128Mb of memory,
+	The minimal value is 128 for low memory machines, and it will
-	and 128 for low memory machines. If server suffers of overload,
+	increase in proportion to the memory of machine.
-	try to increase this number.
+	If server suffers from overload, try increasing this number.
 
 tcp_max_tw_buckets - INTEGER
 	Maximal number of timewait sockets held by system simultaneously.

drivers/net/ethernet/pasemi/Makefile

@@ -2,4 +2,5 @@
 # Makefile for the A Semi network device drivers.
 #
 
-obj-$(CONFIG_PASEMI_MAC) += pasemi_mac.o pasemi_mac_ethtool.o
+obj-$(CONFIG_PASEMI_MAC) += pasemi_mac_driver.o
+pasemi_mac_driver-objs := pasemi_mac.o pasemi_mac_ethtool.o

drivers/net/ethernet/realtek/r8169.c

@@ -1183,11 +1183,13 @@ static u8 rtl8168d_efuse_read(void __iomem *ioaddr, int reg_addr)
 	return value;
 }
 
-static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
+static void rtl8169_irq_mask_and_ack(struct rtl8169_private *tp)
 {
-	RTL_W16(IntrMask, 0x0000);
+	void __iomem *ioaddr = tp->mmio_addr;
 
-	RTL_W16(IntrStatus, 0xffff);
+	RTL_W16(IntrMask, 0x0000);
+	RTL_W16(IntrStatus, tp->intr_event);
+	RTL_R8(ChipCmd);
 }
 
 static unsigned int rtl8169_tbi_reset_pending(struct rtl8169_private *tp)
@@ -3933,8 +3935,6 @@ static void rtl_hw_reset(struct rtl8169_private *tp)
 			break;
 		udelay(100);
 	}
-
-	rtl8169_init_ring_indexes(tp);
 }
 
 static int __devinit
@@ -4339,7 +4339,7 @@ static void rtl8169_hw_reset(struct rtl8169_private *tp)
 	void __iomem *ioaddr = tp->mmio_addr;
 
 	/* Disable interrupts */
-	rtl8169_irq_mask_and_ack(ioaddr);
+	rtl8169_irq_mask_and_ack(tp);
 
 	rtl_rx_close(tp);
 
@@ -4885,8 +4885,7 @@ static void rtl_hw_start_8168(struct net_device *dev)
 	RTL_W16(IntrMitigate, 0x5151);
 
 	/* Work around for RxFIFO overflow. */
-	if (tp->mac_version == RTL_GIGA_MAC_VER_11 ||
+	if (tp->mac_version == RTL_GIGA_MAC_VER_11) {
-	    tp->mac_version == RTL_GIGA_MAC_VER_22) {
 		tp->intr_event |= RxFIFOOver | PCSTimeout;
 		tp->intr_event &= ~RxOverflow;
 	}
@@ -5076,6 +5075,11 @@ static void rtl_hw_start_8101(struct net_device *dev)
 	void __iomem *ioaddr = tp->mmio_addr;
 	struct pci_dev *pdev = tp->pci_dev;
 
+	if (tp->mac_version >= RTL_GIGA_MAC_VER_30) {
+		tp->intr_event &= ~RxFIFOOver;
+		tp->napi_event &= ~RxFIFOOver;
+	}
+
 	if (tp->mac_version == RTL_GIGA_MAC_VER_13 ||
 	    tp->mac_version == RTL_GIGA_MAC_VER_16) {
 		int cap = pci_pcie_cap(pdev);
@@ -5342,7 +5346,7 @@ static void rtl8169_wait_for_quiescence(struct net_device *dev)
 	/* Wait for any pending NAPI task to complete */
 	napi_disable(&tp->napi);
 
-	rtl8169_irq_mask_and_ack(ioaddr);
+	rtl8169_irq_mask_and_ack(tp);
 
 	tp->intr_mask = 0xffff;
 	RTL_W16(IntrMask, tp->intr_event);
@@ -5389,14 +5393,16 @@ static void rtl8169_reset_task(struct work_struct *work)
 	if (!netif_running(dev))
 		goto out_unlock;
 
+	rtl8169_hw_reset(tp);
+
 	rtl8169_wait_for_quiescence(dev);
 
 	for (i = 0; i < NUM_RX_DESC; i++)
 		rtl8169_mark_to_asic(tp->RxDescArray + i, rx_buf_sz);
 
 	rtl8169_tx_clear(tp);
+	rtl8169_init_ring_indexes(tp);
 
-	rtl8169_hw_reset(tp);
 	rtl_hw_start(dev);
 	netif_wake_queue(dev);
 	rtl8169_check_link_status(dev, tp, tp->mmio_addr);
@@ -5407,11 +5413,6 @@ static void rtl8169_reset_task(struct work_struct *work)
 
 static void rtl8169_tx_timeout(struct net_device *dev)
 {
-	struct rtl8169_private *tp = netdev_priv(dev);
-
-	rtl8169_hw_reset(tp);
-
-	/* Let's wait a bit while any (async) irq lands on */
 	rtl8169_schedule_work(dev, rtl8169_reset_task);
 }
 
@@ -5804,6 +5805,10 @@ static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
 	 */
 	status = RTL_R16(IntrStatus);
 	while (status && status != 0xffff) {
+		status &= tp->intr_event;
+		if (!status)
+			break;
+
 		handled = 1;
 
 		/* Handle all of the error cases first. These will reset
@@ -5818,27 +5823,9 @@ static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
 			switch (tp->mac_version) {
 			/* Work around for rx fifo overflow */
 			case RTL_GIGA_MAC_VER_11:
-			case RTL_GIGA_MAC_VER_22:
-			case RTL_GIGA_MAC_VER_26:
 				netif_stop_queue(dev);
 				rtl8169_tx_timeout(dev);
 				goto done;
-			/* Testers needed. */
-			case RTL_GIGA_MAC_VER_17:
-			case RTL_GIGA_MAC_VER_19:
-			case RTL_GIGA_MAC_VER_20:
-			case RTL_GIGA_MAC_VER_21:
-			case RTL_GIGA_MAC_VER_23:
-			case RTL_GIGA_MAC_VER_24:
-			case RTL_GIGA_MAC_VER_27:
-			case RTL_GIGA_MAC_VER_28:
-			case RTL_GIGA_MAC_VER_31:
-			/* Experimental science. Pktgen proof. */
-			case RTL_GIGA_MAC_VER_12:
-			case RTL_GIGA_MAC_VER_25:
-				if (status == RxFIFOOver)
-					goto done;
-				break;
 			default:
 				break;
 			}

drivers/net/wireless/iwlwifi/iwl-1000.c

@@ -191,6 +191,7 @@ static struct iwl_base_params iwl1000_base_params = {
 	.chain_noise_scale = 1000,
 	.wd_timeout = IWL_DEF_WD_TIMEOUT,
 	.max_event_log_size = 128,
+	.wd_disable = true,
 };
 static struct iwl_ht_params iwl1000_ht_params = {
 	.ht_greenfield_support = true,

drivers/net/wireless/iwlwifi/iwl-5000.c

@@ -364,6 +364,7 @@ static struct iwl_base_params iwl5000_base_params = {
 	.wd_timeout = IWL_LONG_WD_TIMEOUT,
 	.max_event_log_size = 512,
 	.no_idle_support = true,
+	.wd_disable = true,
 };
 static struct iwl_ht_params iwl5000_ht_params = {
 	.ht_greenfield_support = true,

drivers/net/wireless/iwlwifi/iwl-agn-rxon.c

@@ -528,6 +528,24 @@ int iwlagn_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 	return 0;
 }
 
+void iwlagn_config_ht40(struct ieee80211_conf *conf,
+	struct iwl_rxon_context *ctx)
+{
+	if (conf_is_ht40_minus(conf)) {
+		ctx->ht.extension_chan_offset =
+			IEEE80211_HT_PARAM_CHA_SEC_BELOW;
+		ctx->ht.is_40mhz = true;
+	} else if (conf_is_ht40_plus(conf)) {
+		ctx->ht.extension_chan_offset =
+			IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
+		ctx->ht.is_40mhz = true;
+	} else {
+		ctx->ht.extension_chan_offset =
+			IEEE80211_HT_PARAM_CHA_SEC_NONE;
+		ctx->ht.is_40mhz = false;
+	}
+}
+
 int iwlagn_mac_config(struct ieee80211_hw *hw, u32 changed)
 {
 	struct iwl_priv *priv = hw->priv;
@@ -586,19 +604,11 @@ int iwlagn_mac_config(struct ieee80211_hw *hw, u32 changed)
 				ctx->ht.enabled = conf_is_ht(conf);
 
 			if (ctx->ht.enabled) {
-				if (conf_is_ht40_minus(conf)) {
+				/* if HT40 is used, it should not change
-					ctx->ht.extension_chan_offset =
+				 * after associated except channel switch */
-						IEEE80211_HT_PARAM_CHA_SEC_BELOW;
+				if (iwl_is_associated_ctx(ctx) &&
-					ctx->ht.is_40mhz = true;
+				     !ctx->ht.is_40mhz)
-				} else if (conf_is_ht40_plus(conf)) {
+					iwlagn_config_ht40(conf, ctx);
-					ctx->ht.extension_chan_offset =
-						IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
-					ctx->ht.is_40mhz = true;
-				} else {
-					ctx->ht.extension_chan_offset =
-						IEEE80211_HT_PARAM_CHA_SEC_NONE;
-					ctx->ht.is_40mhz = false;
-				}
 			} else
 				ctx->ht.is_40mhz = false;
 

drivers/net/wireless/iwlwifi/iwl-agn-sta.c

@@ -1268,9 +1268,6 @@ int iwl_set_dynamic_key(struct iwl_priv *priv,
 
 	switch (keyconf->cipher) {
 	case WLAN_CIPHER_SUITE_TKIP:
-		keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
-		keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
-
 		if (sta)
 			addr = sta->addr;
 		else /* station mode case only */
@@ -1283,8 +1280,6 @@ int iwl_set_dynamic_key(struct iwl_priv *priv,
 					  seq.tkip.iv32, p1k, CMD_SYNC);
 		break;
 	case WLAN_CIPHER_SUITE_CCMP:
-		keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
-		/* fall through */
 	case WLAN_CIPHER_SUITE_WEP40:
 	case WLAN_CIPHER_SUITE_WEP104:
 		ret = iwlagn_send_sta_key(priv, keyconf, sta_id,

drivers/net/wireless/iwlwifi/iwl-agn.c

@@ -2316,6 +2316,17 @@ static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 		return -EOPNOTSUPP;
 	}
 
+	switch (key->cipher) {
+	case WLAN_CIPHER_SUITE_TKIP:
+		key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
+		/* fall through */
+	case WLAN_CIPHER_SUITE_CCMP:
+		key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
+		break;
+	default:
+		break;
+	}
+
 	/*
 	 * We could program these keys into the hardware as well, but we
 	 * don't expect much multicast traffic in IBSS and having keys
@@ -2599,21 +2610,9 @@ static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
 
 	/* Configure HT40 channels */
 	ctx->ht.enabled = conf_is_ht(conf);
-	if (ctx->ht.enabled) {
+	if (ctx->ht.enabled)
-		if (conf_is_ht40_minus(conf)) {
+		iwlagn_config_ht40(conf, ctx);
-			ctx->ht.extension_chan_offset =
+	else
-				IEEE80211_HT_PARAM_CHA_SEC_BELOW;
-			ctx->ht.is_40mhz = true;
-		} else if (conf_is_ht40_plus(conf)) {
-			ctx->ht.extension_chan_offset =
-				IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
-			ctx->ht.is_40mhz = true;
-		} else {
-			ctx->ht.extension_chan_offset =
-				IEEE80211_HT_PARAM_CHA_SEC_NONE;
-			ctx->ht.is_40mhz = false;
-		}
-	} else
 		ctx->ht.is_40mhz = false;
 
 	if ((le16_to_cpu(ctx->staging.channel) != ch))
@@ -3499,9 +3498,10 @@ MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
 
-module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
+module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
 MODULE_PARM_DESC(wd_disable,
-		"Disable stuck queue watchdog timer (default: 0 [enabled])");
+		"Disable stuck queue watchdog timer 0=system default, "
+		"1=disable, 2=enable (default: 0)");
 
 /*
  * set bt_coex_active to true, uCode will do kill/defer

drivers/net/wireless/iwlwifi/iwl-agn.h

@@ -86,6 +86,8 @@ void iwlagn_bss_info_changed(struct ieee80211_hw *hw,
 			     struct ieee80211_vif *vif,
 			     struct ieee80211_bss_conf *bss_conf,
 			     u32 changes);
+void iwlagn_config_ht40(struct ieee80211_conf *conf,
+			struct iwl_rxon_context *ctx);
 
 /* uCode */
 int iwlagn_rx_calib_result(struct iwl_priv *priv,

drivers/net/wireless/iwlwifi/iwl-core.c

@@ -1810,11 +1810,23 @@ void iwl_setup_watchdog(struct iwl_priv *priv)
 {
 	unsigned int timeout = priv->cfg->base_params->wd_timeout;
 
-	if (timeout && !iwlagn_mod_params.wd_disable)
+	if (!iwlagn_mod_params.wd_disable) {
-		mod_timer(&priv->watchdog,
+		/* use system default */
-			  jiffies + msecs_to_jiffies(IWL_WD_TICK(timeout)));
+		if (timeout && !priv->cfg->base_params->wd_disable)
-	else
+			mod_timer(&priv->watchdog,
-		del_timer(&priv->watchdog);
+				jiffies +
+				msecs_to_jiffies(IWL_WD_TICK(timeout)));
+		else
+			del_timer(&priv->watchdog);
+	} else {
+		/* module parameter overwrite default configuration */
+		if (timeout && iwlagn_mod_params.wd_disable == 2)
+			mod_timer(&priv->watchdog,
+				jiffies +
+				msecs_to_jiffies(IWL_WD_TICK(timeout)));
+		else
+			del_timer(&priv->watchdog);
+	}
 }
 
 /**

drivers/net/wireless/iwlwifi/iwl-core.h

@@ -113,6 +113,7 @@ struct iwl_lib_ops {
  * @shadow_reg_enable: HW shadhow register bit
  * @no_idle_support: do not support idle mode
  * @hd_v2: v2 of enhanced sensitivity value, used for 2000 series and up
+ * wd_disable: disable watchdog timer
  */
 struct iwl_base_params {
 	int eeprom_size;
@@ -134,6 +135,7 @@ struct iwl_base_params {
 	const bool shadow_reg_enable;
 	const bool no_idle_support;
 	const bool hd_v2;
+	const bool wd_disable;
 };
 /*
  * @advanced_bt_coexist: support advanced bt coexist

drivers/net/wireless/iwlwifi/iwl-shared.h

@@ -120,7 +120,7 @@ extern struct iwl_mod_params iwlagn_mod_params;
  * @restart_fw: restart firmware, default = 1
  * @plcp_check: enable plcp health check, default = true
  * @ack_check: disable ack health check, default = false
- * @wd_disable: enable stuck queue check, default = false
+ * @wd_disable: enable stuck queue check, default = 0
  * @bt_coex_active: enable bt coex, default = true
  * @led_mode: system default, default = 0
  * @no_sleep_autoadjust: disable autoadjust, default = true
@@ -141,7 +141,7 @@ struct iwl_mod_params {
 	int restart_fw;
 	bool plcp_check;
 	bool ack_check;
-	bool wd_disable;
+	int  wd_disable;
 	bool bt_coex_active;
 	int led_mode;
 	bool no_sleep_autoadjust;

drivers/net/xen-netback/netback.c

@@ -1668,7 +1668,7 @@ static int __init netback_init(void)
 					     "netback/%u", group);
 
 		if (IS_ERR(netbk->task)) {
-			printk(KERN_ALERT "kthread_run() fails at netback\n");
+			printk(KERN_ALERT "kthread_create() fails at netback\n");
 			del_timer(&netbk->net_timer);
 			rc = PTR_ERR(netbk->task);
 			goto failed_init;

net/core/request_sock.c

@@ -26,10 +26,11 @@
  * but then some measure against one socket starving all other sockets
  * would be needed.
  *
- * It was 128 by default. Experiments with real servers show, that
+ * The minimum value of it is 128. Experiments with real servers show that
  * it is absolutely not enough even at 100conn/sec. 256 cures most
- * of problems. This value is adjusted to 128 for very small machines
+ * of problems.
- * (<=32Mb of memory) and to 1024 on normal or better ones (>=256Mb).
+ * This value is adjusted to 128 for low memory machines,
+ * and it will increase in proportion to the memory of machine.
  * Note : Dont forget somaxconn that may limit backlog too.
  */
 int sysctl_max_syn_backlog = 256;

net/core/secure_seq.c

@@ -19,6 +19,7 @@ static int __init net_secret_init(void)
 }
 late_initcall(net_secret_init);
 
+#ifdef CONFIG_INET
 static u32 seq_scale(u32 seq)
 {
 	/*
@@ -33,6 +34,7 @@ static u32 seq_scale(u32 seq)
 	 */
 	return seq + (ktime_to_ns(ktime_get_real()) >> 6);
 }
+#endif
 
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 __u32 secure_tcpv6_sequence_number(const __be32 *saddr, const __be32 *daddr,

net/ipv4/route.c

@@ -112,7 +112,7 @@
 #include <net/secure_seq.h>
 
 #define RT_FL_TOS(oldflp4) \
-    ((u32)(oldflp4->flowi4_tos & (IPTOS_RT_MASK | RTO_ONLINK)))
+	((oldflp4)->flowi4_tos & (IPTOS_RT_MASK | RTO_ONLINK))
 
 #define IP_MAX_MTU	0xFFF0
 
@@ -1310,7 +1310,7 @@ static void rt_del(unsigned hash, struct rtable *rt)
 	spin_unlock_bh(rt_hash_lock_addr(hash));
 }
 
-static int check_peer_redir(struct dst_entry *dst, struct inet_peer *peer)
+static void check_peer_redir(struct dst_entry *dst, struct inet_peer *peer)
 {
 	struct rtable *rt = (struct rtable *) dst;
 	__be32 orig_gw = rt->rt_gateway;
@@ -1321,21 +1321,19 @@ static int check_peer_redir(struct dst_entry *dst, struct inet_peer *peer)
 	rt->rt_gateway = peer->redirect_learned.a4;
 
 	n = ipv4_neigh_lookup(&rt->dst, &rt->rt_gateway);
-	if (IS_ERR(n))
+	if (IS_ERR(n)) {
-		return PTR_ERR(n);
+		rt->rt_gateway = orig_gw;
+		return;
+	}
 	old_n = xchg(&rt->dst._neighbour, n);
 	if (old_n)
 		neigh_release(old_n);
-	if (!n || !(n->nud_state & NUD_VALID)) {
+	if (!(n->nud_state & NUD_VALID)) {
-		if (n)
+		neigh_event_send(n, NULL);
-			neigh_event_send(n, NULL);
-		rt->rt_gateway = orig_gw;
-		return -EAGAIN;
 	} else {
 		rt->rt_flags |= RTCF_REDIRECTED;
 		call_netevent_notifiers(NETEVENT_NEIGH_UPDATE, n);
 	}
-	return 0;
 }
 
 /* called in rcu_read_lock() section */
@@ -1693,7 +1691,7 @@ static void ip_rt_update_pmtu(struct dst_entry *dst, u32 mtu)
 }
 
 
-static struct rtable *ipv4_validate_peer(struct rtable *rt)
+static void ipv4_validate_peer(struct rtable *rt)
 {
 	if (rt->rt_peer_genid != rt_peer_genid()) {
 		struct inet_peer *peer;
@@ -1708,15 +1706,12 @@ static struct rtable *ipv4_validate_peer(struct rtable *rt)
 			if (peer->redirect_genid != redirect_genid)
 				peer->redirect_learned.a4 = 0;
 			if (peer->redirect_learned.a4 &&
-			    peer->redirect_learned.a4 != rt->rt_gateway) {
+			    peer->redirect_learned.a4 != rt->rt_gateway)
-				if (check_peer_redir(&rt->dst, peer))
+				check_peer_redir(&rt->dst, peer);
-					return NULL;
-			}
 		}
 
 		rt->rt_peer_genid = rt_peer_genid();
 	}
-	return rt;
 }
 
 static struct dst_entry *ipv4_dst_check(struct dst_entry *dst, u32 cookie)
@@ -1725,7 +1720,7 @@ static struct dst_entry *ipv4_dst_check(struct dst_entry *dst, u32 cookie)
 
 	if (rt_is_expired(rt))
 		return NULL;
-	dst = (struct dst_entry *) ipv4_validate_peer(rt);
+	ipv4_validate_peer(rt);
 	return dst;
 }
 
@@ -2380,9 +2375,7 @@ int ip_route_input_common(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 		    rth->rt_mark == skb->mark &&
 		    net_eq(dev_net(rth->dst.dev), net) &&
 		    !rt_is_expired(rth)) {
-			rth = ipv4_validate_peer(rth);
+			ipv4_validate_peer(rth);
-			if (!rth)
-				continue;
 			if (noref) {
 				dst_use_noref(&rth->dst, jiffies);
 				skb_dst_set_noref(skb, &rth->dst);
@@ -2441,11 +2434,11 @@ EXPORT_SYMBOL(ip_route_input_common);
 static struct rtable *__mkroute_output(const struct fib_result *res,
 				       const struct flowi4 *fl4,
 				       __be32 orig_daddr, __be32 orig_saddr,
-				       int orig_oif, struct net_device *dev_out,
+				       int orig_oif, __u8 orig_rtos,
+				       struct net_device *dev_out,
 				       unsigned int flags)
 {
 	struct fib_info *fi = res->fi;
-	u32 tos = RT_FL_TOS(fl4);
 	struct in_device *in_dev;
 	u16 type = res->type;
 	struct rtable *rth;
@@ -2496,7 +2489,7 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
 	rth->rt_genid = rt_genid(dev_net(dev_out));
 	rth->rt_flags	= flags;
 	rth->rt_type	= type;
-	rth->rt_key_tos	= tos;
+	rth->rt_key_tos	= orig_rtos;
 	rth->rt_dst	= fl4->daddr;
 	rth->rt_src	= fl4->saddr;
 	rth->rt_route_iif = 0;
@@ -2546,7 +2539,7 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
 static struct rtable *ip_route_output_slow(struct net *net, struct flowi4 *fl4)
 {
 	struct net_device *dev_out = NULL;
-	u32 tos	= RT_FL_TOS(fl4);
+	__u8 tos = RT_FL_TOS(fl4);
 	unsigned int flags = 0;
 	struct fib_result res;
 	struct rtable *rth;
@@ -2722,7 +2715,7 @@ static struct rtable *ip_route_output_slow(struct net *net, struct flowi4 *fl4)
 
 make_route:
 	rth = __mkroute_output(&res, fl4, orig_daddr, orig_saddr, orig_oif,
-			       dev_out, flags);
+			       tos, dev_out, flags);
 	if (!IS_ERR(rth)) {
 		unsigned int hash;
 
@@ -2758,9 +2751,7 @@ struct rtable *__ip_route_output_key(struct net *net, struct flowi4 *flp4)
 			    (IPTOS_RT_MASK | RTO_ONLINK)) &&
 		    net_eq(dev_net(rth->dst.dev), net) &&
 		    !rt_is_expired(rth)) {
-			rth = ipv4_validate_peer(rth);
+			ipv4_validate_peer(rth);
-			if (!rth)
-				continue;
 			dst_use(&rth->dst, jiffies);
 			RT_CACHE_STAT_INC(out_hit);
 			rcu_read_unlock_bh();

net/mac80211/main.c

@@ -757,6 +757,12 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 	if (!local->int_scan_req)
 		return -ENOMEM;
 
+	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+		if (!local->hw.wiphy->bands[band])
+			continue;
+		local->int_scan_req->rates[band] = (u32) -1;
+	}
+
 	/* if low-level driver supports AP, we also support VLAN */
 	if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
 		hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);

net/mac80211/util.c

@@ -1039,7 +1039,6 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 					     struct ieee80211_sub_if_data,
 					     u.ap);
 
-			memset(&sta->sta.drv_priv, 0, hw->sta_data_size);
 			WARN_ON(drv_sta_add(local, sdata, &sta->sta));
 		}
 	}

net/wireless/reg.c

@@ -57,8 +57,17 @@
 #define REG_DBG_PRINT(args...)
 #endif
 
+static struct regulatory_request core_request_world = {
+	.initiator = NL80211_REGDOM_SET_BY_CORE,
+	.alpha2[0] = '0',
+	.alpha2[1] = '0',
+	.intersect = false,
+	.processed = true,
+	.country_ie_env = ENVIRON_ANY,
+};
+
 /* Receipt of information from last regulatory request */
-static struct regulatory_request *last_request;
+static struct regulatory_request *last_request = &core_request_world;
 
 /* To trigger userspace events */
 static struct platform_device *reg_pdev;
@@ -150,7 +159,7 @@ static char user_alpha2[2];
 module_param(ieee80211_regdom, charp, 0444);
 MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain code");
 
-static void reset_regdomains(void)
+static void reset_regdomains(bool full_reset)
 {
 	/* avoid freeing static information or freeing something twice */
 	if (cfg80211_regdomain == cfg80211_world_regdom)
@@ -165,6 +174,13 @@ static void reset_regdomains(void)
 
 	cfg80211_world_regdom = &world_regdom;
 	cfg80211_regdomain = NULL;
+
+	if (!full_reset)
+		return;
+
+	if (last_request != &core_request_world)
+		kfree(last_request);
+	last_request = &core_request_world;
 }
 
 /*
@@ -175,7 +191,7 @@ static void update_world_regdomain(const struct ieee80211_regdomain *rd)
 {
 	BUG_ON(!last_request);
 
-	reset_regdomains();
+	reset_regdomains(false);
 
 	cfg80211_world_regdom = rd;
 	cfg80211_regdomain = rd;
@@ -1407,7 +1423,8 @@ static int __regulatory_hint(struct wiphy *wiphy,
 	}
 
 new_request:
-	kfree(last_request);
+	if (last_request != &core_request_world)
+		kfree(last_request);
 
 	last_request = pending_request;
 	last_request->intersect = intersect;
@@ -1577,9 +1594,6 @@ static int regulatory_hint_core(const char *alpha2)
 {
 	struct regulatory_request *request;
 
-	kfree(last_request);
-	last_request = NULL;
-
 	request = kzalloc(sizeof(struct regulatory_request),
 			  GFP_KERNEL);
 	if (!request)
@@ -1777,7 +1791,7 @@ static void restore_regulatory_settings(bool reset_user)
 	mutex_lock(&cfg80211_mutex);
 	mutex_lock(&reg_mutex);
 
-	reset_regdomains();
+	reset_regdomains(true);
 	restore_alpha2(alpha2, reset_user);
 
 	/*
@@ -2037,8 +2051,10 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
 	}
 
 	request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx);
-	if (!request_wiphy) {
+	if (!request_wiphy &&
-		reg_set_request_processed();
+	    (last_request->initiator == NL80211_REGDOM_SET_BY_DRIVER ||
+	     last_request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE)) {
+		schedule_delayed_work(&reg_timeout, 0);
 		return -ENODEV;
 	}
 
@@ -2046,7 +2062,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
 		int r;
 
 		if (last_request->initiator != NL80211_REGDOM_SET_BY_DRIVER) {
-			reset_regdomains();
+			reset_regdomains(false);
 			cfg80211_regdomain = rd;
 			return 0;
 		}
@@ -2067,7 +2083,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
 		if (r)
 			return r;
 
-		reset_regdomains();
+		reset_regdomains(false);
 		cfg80211_regdomain = rd;
 		return 0;
 	}
@@ -2092,7 +2108,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
 
 		rd = NULL;
 
-		reset_regdomains();
+		reset_regdomains(false);
 		cfg80211_regdomain = intersected_rd;
 
 		return 0;
@@ -2112,7 +2128,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
 	kfree(rd);
 	rd = NULL;
 
-	reset_regdomains();
+	reset_regdomains(false);
 	cfg80211_regdomain = intersected_rd;
 
 	return 0;
@@ -2265,11 +2281,8 @@ void /* __init_or_exit */ regulatory_exit(void)
 	mutex_lock(&cfg80211_mutex);
 	mutex_lock(&reg_mutex);
 
-	reset_regdomains();
+	reset_regdomains(true);
 
-	kfree(last_request);
-
-	last_request = NULL;
 	dev_set_uevent_suppress(&reg_pdev->dev, true);
 
 	platform_device_unregister(reg_pdev);