Merge branch 'master' into for-next

Sync with Linus tree to have 157550ff ("mtd: add GPMI-NAND driver
in the config and Makefile") as I have patch depending on that one.

9 files changed, 114 insertions, 41 deletions

diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index ff3ed60..feb77ea 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -301,7 +301,7 @@ static const struct net_device_ops br_netdev_ops = {
 	.ndo_start_xmit		 = br_dev_xmit,
 	.ndo_get_stats64	 = br_get_stats64,
 	.ndo_set_mac_address	 = br_set_mac_address,
-	.ndo_set_multicast_list	 = br_dev_set_multicast_list,
+	.ndo_set_rx_mode	 = br_dev_set_multicast_list,
 	.ndo_change_mtu		 = br_change_mtu,
 	.ndo_do_ioctl		 = br_dev_ioctl,
 #ifdef CONFIG_NET_POLL_CONTROLLER
@@ -358,6 +358,8 @@ void br_dev_setup(struct net_device *dev)
 	memcpy(br->group_addr, br_group_address, ETH_ALEN);
 
 	br->stp_enabled = BR_NO_STP;
+	br->group_fwd_mask = BR_GROUPFWD_DEFAULT;
+
 	br->designated_root = br->bridge_id;
 	br->bridge_max_age = br->max_age = 20 * HZ;
 	br->bridge_hello_time = br->hello_time = 2 * HZ;
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 68def3b..c8e7861 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -558,19 +558,28 @@ skip:
 
 /* Create new static fdb entry */
 static int fdb_add_entry(struct net_bridge_port *source, const __u8 *addr,
-			 __u16 state)
+			 __u16 state, __u16 flags)
 {
 	struct net_bridge *br = source->br;
 	struct hlist_head *head = &br->hash[br_mac_hash(addr)];
 	struct net_bridge_fdb_entry *fdb;
 
 	fdb = fdb_find(head, addr);
-	if (fdb)
-		return -EEXIST;
+	if (fdb == NULL) {
+		if (!(flags & NLM_F_CREATE))
+			return -ENOENT;
 
-	fdb = fdb_create(head, source, addr);
-	if (!fdb)
-		return -ENOMEM;
+		fdb = fdb_create(head, source, addr);
+		if (!fdb)
+			return -ENOMEM;
+	} else {
+		if (flags & NLM_F_EXCL)
+			return -EEXIST;
+
+		if (flags & NLM_F_REPLACE)
+			fdb->updated = fdb->used = jiffies;
+		fdb->is_local = fdb->is_static = 0;
+	}
 
 	if (state & NUD_PERMANENT)
 		fdb->is_local = fdb->is_static = 1;
@@ -626,7 +635,7 @@ int br_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 	}
 
 	spin_lock_bh(&p->br->hash_lock);
-	err = fdb_add_entry(p, addr, ndm->ndm_state);
+	err = fdb_add_entry(p, addr, ndm->ndm_state, nlh->nlmsg_flags);
 	spin_unlock_bh(&p->br->hash_lock);
 
 	return err;
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 1d420f6..f603e5b 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -13,6 +13,7 @@
 
 #include <linux/kernel.h>
 #include <linux/netdevice.h>
+#include <linux/etherdevice.h>
 #include <linux/netpoll.h>
 #include <linux/ethtool.h>
 #include <linux/if_arp.h>
@@ -33,20 +34,18 @@
  */
 static int port_cost(struct net_device *dev)
 {
-	if (dev->ethtool_ops && dev->ethtool_ops->get_settings) {
-		struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET, };
-
-		if (!dev_ethtool_get_settings(dev, &ecmd)) {
-			switch (ethtool_cmd_speed(&ecmd)) {
-			case SPEED_10000:
-				return 2;
-			case SPEED_1000:
-				return 4;
-			case SPEED_100:
-				return 19;
-			case SPEED_10:
-				return 100;
-			}
+	struct ethtool_cmd ecmd;
+
+	if (!__ethtool_get_settings(dev, &ecmd)) {
+		switch (ethtool_cmd_speed(&ecmd)) {
+		case SPEED_10000:
+			return 2;
+		case SPEED_1000:
+			return 4;
+		case SPEED_100:
+			return 19;
+		case SPEED_10:
+			return 100;
 		}
 	}
 
@@ -325,7 +324,8 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
 
 	/* Don't allow bridging non-ethernet like devices */
 	if ((dev->flags & IFF_LOOPBACK) ||
-	    dev->type != ARPHRD_ETHER || dev->addr_len != ETH_ALEN)
+	    dev->type != ARPHRD_ETHER || dev->addr_len != ETH_ALEN ||
+	    !is_valid_ether_addr(dev->dev_addr))
 		return -EINVAL;
 
 	/* No bridging of bridges */
@@ -353,10 +353,6 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
 	err = kobject_init_and_add(&p->kobj, &brport_ktype, &(dev->dev.kobj),
 				   SYSFS_BRIDGE_PORT_ATTR);
 	if (err)
-		goto err0;
-
-	err = br_fdb_insert(br, p, dev->dev_addr);
-	if (err)
 		goto err1;
 
 	err = br_sysfs_addif(p);
@@ -397,6 +393,9 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
 
 	dev_set_mtu(br->dev, br_min_mtu(br));
 
+	if (br_fdb_insert(br, p, dev->dev_addr))
+		netdev_err(dev, "failed insert local address bridge forwarding table\n");
+
 	kobject_uevent(&p->kobj, KOBJ_ADD);
 
 	return 0;
@@ -406,11 +405,9 @@ err4:
 err3:
 	sysfs_remove_link(br->ifobj, p->dev->name);
 err2:
-	br_fdb_delete_by_port(br, p, 1);
-err1:
 	kobject_put(&p->kobj);
 	p = NULL; /* kobject_put frees */
-err0:
+err1:
 	dev_set_promiscuity(dev, -1);
 put_back:
 	dev_put(dev);
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index f06ee39..5a31731 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -16,6 +16,7 @@
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/netfilter_bridge.h>
+#include <linux/export.h>
 #include "br_private.h"
 
 /* Bridge group multicast address 802.1d (pg 51). */
@@ -162,14 +163,37 @@ rx_handler_result_t br_handle_frame(struct sk_buff **pskb)
 	p = br_port_get_rcu(skb->dev);
 
 	if (unlikely(is_link_local(dest))) {
-		/* Pause frames shouldn't be passed up by driver anyway */
-		if (skb->protocol == htons(ETH_P_PAUSE))
+		/*
+		 * See IEEE 802.1D Table 7-10 Reserved addresses
+		 *
+		 * Assignment		 		Value
+		 * Bridge Group Address		01-80-C2-00-00-00
+		 * (MAC Control) 802.3		01-80-C2-00-00-01
+		 * (Link Aggregation) 802.3	01-80-C2-00-00-02
+		 * 802.1X PAE address		01-80-C2-00-00-03
+		 *
+		 * 802.1AB LLDP 		01-80-C2-00-00-0E
+		 *
+		 * Others reserved for future standardization
+		 */
+		switch (dest[5]) {
+		case 0x00:	/* Bridge Group Address */
+			/* If STP is turned off,
+			   then must forward to keep loop detection */
+			if (p->br->stp_enabled == BR_NO_STP)
+				goto forward;
+			break;
+
+		case 0x01:	/* IEEE MAC (Pause) */
 			goto drop;
 
-		/* If STP is turned off, then forward */
-		if (p->br->stp_enabled == BR_NO_STP && dest[5] == 0)
-			goto forward;
+		default:
+			/* Allow selective forwarding for most other protocols */
+			if (p->br->group_fwd_mask & (1u << dest[5]))
+				goto forward;
+		}
 
+		/* Deliver packet to local host only */
 		if (NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_IN, skb, skb->dev,
 			    NULL, br_handle_local_finish)) {
 			return RX_HANDLER_CONSUMED; /* consumed by filter */
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 857a021..d7d6fb0 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -29,6 +29,11 @@
 
 #define BR_VERSION	"2.3"
 
+/* Control of forwarding link local multicast */
+#define BR_GROUPFWD_DEFAULT	0
+/* Don't allow forwarding control protocols like STP and LLDP */
+#define BR_GROUPFWD_RESTRICTED	0x4007u
+
 /* Path to usermode spanning tree program */
 #define BR_STP_PROG	"/sbin/bridge-stp"
 
@@ -193,6 +198,8 @@ struct net_bridge
 	unsigned long			flags;
 #define BR_SET_MAC_ADDR		0x00000001
 
+	u16				group_fwd_mask;
+
 	/* STP */
 	bridge_id			designated_root;
 	bridge_id			bridge_id;
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index 10eda3c..19308e3 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -12,6 +12,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/kmod.h>
 #include <linux/etherdevice.h>
 #include <linux/rtnetlink.h>
 
diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index 68b893e..c236c0e 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -149,6 +149,39 @@ static ssize_t store_stp_state(struct device *d,
 static DEVICE_ATTR(stp_state, S_IRUGO | S_IWUSR, show_stp_state,
 		   store_stp_state);
 
+static ssize_t show_group_fwd_mask(struct device *d,
+			      struct device_attribute *attr, char *buf)
+{
+	struct net_bridge *br = to_bridge(d);
+	return sprintf(buf, "%#x\n", br->group_fwd_mask);
+}
+
+
+static ssize_t store_group_fwd_mask(struct device *d,
+			       struct device_attribute *attr, const char *buf,
+			       size_t len)
+{
+	struct net_bridge *br = to_bridge(d);
+	char *endp;
+	unsigned long val;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	val = simple_strtoul(buf, &endp, 0);
+	if (endp == buf)
+		return -EINVAL;
+
+	if (val & BR_GROUPFWD_RESTRICTED)
+		return -EINVAL;
+
+	br->group_fwd_mask = val;
+
+	return len;
+}
+static DEVICE_ATTR(group_fwd_mask, S_IRUGO | S_IWUSR, show_group_fwd_mask,
+		   store_group_fwd_mask);
+
 static ssize_t show_priority(struct device *d, struct device_attribute *attr,
 			     char *buf)
 {
@@ -652,6 +685,7 @@ static struct attribute *bridge_attrs[] = {
 	&dev_attr_max_age.attr,
 	&dev_attr_ageing_time.attr,
 	&dev_attr_stp_state.attr,
+	&dev_attr_group_fwd_mask.attr,
 	&dev_attr_priority.attr,
 	&dev_attr_bridge_id.attr,
 	&dev_attr_root_id.attr,
diff --git a/net/bridge/netfilter/ebt_ulog.c b/net/bridge/netfilter/ebt_ulog.c
index bf2a333..5449294 100644
--- a/net/bridge/netfilter/ebt_ulog.c
+++ b/net/bridge/netfilter/ebt_ulog.c
@@ -102,16 +102,15 @@ static struct sk_buff *ulog_alloc_skb(unsigned int size)
 	unsigned int n;
 
 	n = max(size, nlbufsiz);
-	skb = alloc_skb(n, GFP_ATOMIC);
+	skb = alloc_skb(n, GFP_ATOMIC | __GFP_NOWARN);
 	if (!skb) {
-		pr_debug("cannot alloc whole buffer of size %ub!\n", n);
 		if (n > size) {
 			/* try to allocate only as much as we need for
 			 * current packet */
 			skb = alloc_skb(size, GFP_ATOMIC);
 			if (!skb)
-				pr_debug("cannot even allocate "
-					 "buffer of size %ub\n", size);
+				pr_debug("cannot even allocate buffer of size %ub\n",
+					 size);
 		}
 	}
 
diff --git a/net/bridge/netfilter/ebtable_broute.c b/net/bridge/netfilter/ebtable_broute.c
index 1bcaf36..40d8258 100644
--- a/net/bridge/netfilter/ebtable_broute.c
+++ b/net/bridge/netfilter/ebtable_broute.c
@@ -87,14 +87,14 @@ static int __init ebtable_broute_init(void)
 	if (ret < 0)
 		return ret;
 	/* see br_input.c */
-	rcu_assign_pointer(br_should_route_hook,
+	RCU_INIT_POINTER(br_should_route_hook,
 			   (br_should_route_hook_t *)ebt_broute);
 	return 0;
 }
 
 static void __exit ebtable_broute_fini(void)
 {
-	rcu_assign_pointer(br_should_route_hook, NULL);
+	RCU_INIT_POINTER(br_should_route_hook, NULL);
 	synchronize_net();
 	unregister_pernet_subsys(&broute_net_ops);
 }