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

Pull networking updates from David Miller:

 1) More iov_iter conversion work from Al Viro.

    [ The "crypto: switch af_alg_make_sg() to iov_iter" commit was
      wrong, and this pull actually adds an extra commit on top of the
      branch I'm pulling to fix that up, so that the pre-merge state is
      ok.   - Linus ]

 2) Various optimizations to the ipv4 forwarding information base trie
    lookup implementation.  From Alexander Duyck.

 3) Remove sock_iocb altogether, from CHristoph Hellwig.

 4) Allow congestion control algorithm selection via routing metrics.
    From Daniel Borkmann.

 5) Make ipv4 uncached route list per-cpu, from Eric Dumazet.

 6) Handle rfs hash collisions more gracefully, also from Eric Dumazet.

 7) Add xmit_more support to r8169, e1000, and e1000e drivers.  From
    Florian Westphal.

 8) Transparent Ethernet Bridging support for GRO, from Jesse Gross.

 9) Add BPF packet actions to packet scheduler, from Jiri Pirko.

10) Add support for uniqu flow IDs to openvswitch, from Joe Stringer.

11) New NetCP ethernet driver, from Muralidharan Karicheri and Wingman
    Kwok.

12) More sanely handle out-of-window dupacks, which can result in
    serious ACK storms.  From Neal Cardwell.

13) Various rhashtable bug fixes and enhancements, from Herbert Xu,
    Patrick McHardy, and Thomas Graf.

14) Support xmit_more in be2net, from Sathya Perla.

15) Group Policy extensions for vxlan, from Thomas Graf.

16) Remove Checksum Offload support for vxlan, from Tom Herbert.

17) Like ipv4, support lockless transmit over ipv6 UDP sockets.  From
    Vlad Yasevich.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1494+1 commits)
  crypto: fix af_alg_make_sg() conversion to iov_iter
  ipv4: Namespecify TCP PMTU mechanism
  i40e: Fix for stats init function call in Rx setup
  tcp: don't include Fast Open option in SYN-ACK on pure SYN-data
  openvswitch: Only set TUNNEL_VXLAN_OPT if VXLAN-GBP metadata is set
  ipv6: Make __ipv6_select_ident static
  ipv6: Fix fragment id assignment on LE arches.
  bridge: Fix inability to add non-vlan fdb entry
  net: Mellanox: Delete unnecessary checks before the function call "vunmap"
  cxgb4: Add support in cxgb4 to get expansion rom version via ethtool
  ethtool: rename reserved1 memeber in ethtool_drvinfo for expansion ROM version
  net: dsa: Remove redundant phy_attach()
  IB/mlx4: Reset flow support for IB kernel ULPs
  IB/mlx4: Always use the correct port for mirrored multicast attachments
  net/bonding: Fix potential bad memory access during bonding events
  tipc: remove tipc_snprintf
  tipc: nl compat add noop and remove legacy nl framework
  tipc: convert legacy nl stats show to nl compat
  tipc: convert legacy nl net id get to nl compat
  tipc: convert legacy nl net id set to nl compat
  ...

1 files changed, 211 insertions, 288 deletions

diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c
index a9e174fc0f9..3e41704832d 100644
--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -1,7 +1,7 @@
 /*
  * net/tipc/bcast.c: TIPC broadcast code
  *
- * Copyright (c) 2004-2006, 2014, Ericsson AB
+ * Copyright (c) 2004-2006, 2014-2015, Ericsson AB
  * Copyright (c) 2004, Intel Corporation.
  * Copyright (c) 2005, 2010-2011, Wind River Systems
  * All rights reserved.
@@ -35,77 +35,14 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "core.h"
-#include "link.h"
 #include "socket.h"
 #include "msg.h"
 #include "bcast.h"
 #include "name_distr.h"
+#include "core.h"
 
 #define	MAX_PKT_DEFAULT_MCAST	1500	/* bcast link max packet size (fixed) */
 #define	BCLINK_WIN_DEFAULT	20	/* bcast link window size (default) */
-#define	BCBEARER		MAX_BEARERS
-
-/**
- * struct tipc_bcbearer_pair - a pair of bearers used by broadcast link
- * @primary: pointer to primary bearer
- * @secondary: pointer to secondary bearer
- *
- * Bearers must have same priority and same set of reachable destinations
- * to be paired.
- */
-
-struct tipc_bcbearer_pair {
-	struct tipc_bearer *primary;
-	struct tipc_bearer *secondary;
-};
-
-/**
- * struct tipc_bcbearer - bearer used by broadcast link
- * @bearer: (non-standard) broadcast bearer structure
- * @media: (non-standard) broadcast media structure
- * @bpairs: array of bearer pairs
- * @bpairs_temp: temporary array of bearer pairs used by tipc_bcbearer_sort()
- * @remains: temporary node map used by tipc_bcbearer_send()
- * @remains_new: temporary node map used tipc_bcbearer_send()
- *
- * Note: The fields labelled "temporary" are incorporated into the bearer
- * to avoid consuming potentially limited stack space through the use of
- * large local variables within multicast routines.  Concurrent access is
- * prevented through use of the spinlock "bclink_lock".
- */
-struct tipc_bcbearer {
-	struct tipc_bearer bearer;
-	struct tipc_media media;
-	struct tipc_bcbearer_pair bpairs[MAX_BEARERS];
-	struct tipc_bcbearer_pair bpairs_temp[TIPC_MAX_LINK_PRI + 1];
-	struct tipc_node_map remains;
-	struct tipc_node_map remains_new;
-};
-
-/**
- * struct tipc_bclink - link used for broadcast messages
- * @lock: spinlock governing access to structure
- * @link: (non-standard) broadcast link structure
- * @node: (non-standard) node structure representing b'cast link's peer node
- * @flags: represent bclink states
- * @bcast_nodes: map of broadcast-capable nodes
- * @retransmit_to: node that most recently requested a retransmit
- *
- * Handles sequence numbering, fragmentation, bundling, etc.
- */
-struct tipc_bclink {
-	spinlock_t lock;
-	struct tipc_link link;
-	struct tipc_node node;
-	unsigned int flags;
-	struct tipc_node_map bcast_nodes;
-	struct tipc_node *retransmit_to;
-};
-
-static struct tipc_bcbearer *bcbearer;
-static struct tipc_bclink *bclink;
-static struct tipc_link *bcl;
 
 const char tipc_bclink_name[] = "broadcast-link";
 
@@ -115,38 +52,50 @@ static void tipc_nmap_diff(struct tipc_node_map *nm_a,
 static void tipc_nmap_add(struct tipc_node_map *nm_ptr, u32 node);
 static void tipc_nmap_remove(struct tipc_node_map *nm_ptr, u32 node);
 
-static void tipc_bclink_lock(void)
+static void tipc_bclink_lock(struct net *net)
 {
-	spin_lock_bh(&bclink->lock);
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
+
+	spin_lock_bh(&tn->bclink->lock);
 }
 
-static void tipc_bclink_unlock(void)
+static void tipc_bclink_unlock(struct net *net)
 {
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
 	struct tipc_node *node = NULL;
 
-	if (likely(!bclink->flags)) {
-		spin_unlock_bh(&bclink->lock);
+	if (likely(!tn->bclink->flags)) {
+		spin_unlock_bh(&tn->bclink->lock);
 		return;
 	}
 
-	if (bclink->flags & TIPC_BCLINK_RESET) {
-		bclink->flags &= ~TIPC_BCLINK_RESET;
-		node = tipc_bclink_retransmit_to();
+	if (tn->bclink->flags & TIPC_BCLINK_RESET) {
+		tn->bclink->flags &= ~TIPC_BCLINK_RESET;
+		node = tipc_bclink_retransmit_to(net);
 	}
-	spin_unlock_bh(&bclink->lock);
+	spin_unlock_bh(&tn->bclink->lock);
 
 	if (node)
 		tipc_link_reset_all(node);
 }
 
+void tipc_bclink_input(struct net *net)
+{
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
+
+	tipc_sk_mcast_rcv(net, &tn->bclink->arrvq, &tn->bclink->inputq);
+}
+
 uint  tipc_bclink_get_mtu(void)
 {
 	return MAX_PKT_DEFAULT_MCAST;
 }
 
-void tipc_bclink_set_flags(unsigned int flags)
+void tipc_bclink_set_flags(struct net *net, unsigned int flags)
 {
-	bclink->flags |= flags;
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
+
+	tn->bclink->flags |= flags;
 }
 
 static u32 bcbuf_acks(struct sk_buff *buf)
@@ -164,31 +113,40 @@ static void bcbuf_decr_acks(struct sk_buff *buf)
 	bcbuf_set_acks(buf, bcbuf_acks(buf) - 1);
 }
 
-void tipc_bclink_add_node(u32 addr)
+void tipc_bclink_add_node(struct net *net, u32 addr)
 {
-	tipc_bclink_lock();
-	tipc_nmap_add(&bclink->bcast_nodes, addr);
-	tipc_bclink_unlock();
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
+
+	tipc_bclink_lock(net);
+	tipc_nmap_add(&tn->bclink->bcast_nodes, addr);
+	tipc_bclink_unlock(net);
 }
 
-void tipc_bclink_remove_node(u32 addr)
+void tipc_bclink_remove_node(struct net *net, u32 addr)
 {
-	tipc_bclink_lock();
-	tipc_nmap_remove(&bclink->bcast_nodes, addr);
-	tipc_bclink_unlock();
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
+
+	tipc_bclink_lock(net);
+	tipc_nmap_remove(&tn->bclink->bcast_nodes, addr);
+	tipc_bclink_unlock(net);
 }
 
-static void bclink_set_last_sent(void)
+static void bclink_set_last_sent(struct net *net)
 {
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
+	struct tipc_link *bcl = tn->bcl;
+
 	if (bcl->next_out)
 		bcl->fsm_msg_cnt = mod(buf_seqno(bcl->next_out) - 1);
 	else
 		bcl->fsm_msg_cnt = mod(bcl->next_out_no - 1);
 }
 
-u32 tipc_bclink_get_last_sent(void)
+u32 tipc_bclink_get_last_sent(struct net *net)
 {
-	return bcl->fsm_msg_cnt;
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
+
+	return tn->bcl->fsm_msg_cnt;
 }
 
 static void bclink_update_last_sent(struct tipc_node *node, u32 seqno)
@@ -203,9 +161,11 @@ static void bclink_update_last_sent(struct tipc_node *node, u32 seqno)
  *
  * Called with bclink_lock locked
  */
-struct tipc_node *tipc_bclink_retransmit_to(void)
+struct tipc_node *tipc_bclink_retransmit_to(struct net *net)
 {
-	return bclink->retransmit_to;
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
+
+	return tn->bclink->retransmit_to;
 }
 
 /**
@@ -215,9 +175,10 @@ struct tipc_node *tipc_bclink_retransmit_to(void)
  *
  * Called with bclink_lock locked
  */
-static void bclink_retransmit_pkt(u32 after, u32 to)
+static void bclink_retransmit_pkt(struct tipc_net *tn, u32 after, u32 to)
 {
 	struct sk_buff *skb;
+	struct tipc_link *bcl = tn->bcl;
 
 	skb_queue_walk(&bcl->outqueue, skb) {
 		if (more(buf_seqno(skb), after)) {
@@ -232,13 +193,11 @@ static void bclink_retransmit_pkt(u32 after, u32 to)
  *
  * Called with no locks taken
  */
-void tipc_bclink_wakeup_users(void)
+void tipc_bclink_wakeup_users(struct net *net)
 {
-	struct sk_buff *skb;
-
-	while ((skb = skb_dequeue(&bclink->link.waiting_sks)))
-		tipc_sk_rcv(skb);
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
 
+	tipc_sk_rcv(net, &tn->bclink->link.wakeupq);
 }
 
 /**
@@ -253,10 +212,12 @@ void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked)
 	struct sk_buff *skb, *tmp;
 	struct sk_buff *next;
 	unsigned int released = 0;
+	struct net *net = n_ptr->net;
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
 
-	tipc_bclink_lock();
+	tipc_bclink_lock(net);
 	/* Bail out if tx queue is empty (no clean up is required) */
-	skb = skb_peek(&bcl->outqueue);
+	skb = skb_peek(&tn->bcl->outqueue);
 	if (!skb)
 		goto exit;
 
@@ -267,43 +228,43 @@ void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked)
 		 * acknowledge sent messages only (if other nodes still exist)
 		 * or both sent and unsent messages (otherwise)
 		 */
-		if (bclink->bcast_nodes.count)
-			acked = bcl->fsm_msg_cnt;
+		if (tn->bclink->bcast_nodes.count)
+			acked = tn->bcl->fsm_msg_cnt;
 		else
-			acked = bcl->next_out_no;
+			acked = tn->bcl->next_out_no;
 	} else {
 		/*
 		 * Bail out if specified sequence number does not correspond
 		 * to a message that has been sent and not yet acknowledged
 		 */
 		if (less(acked, buf_seqno(skb)) ||
-		    less(bcl->fsm_msg_cnt, acked) ||
+		    less(tn->bcl->fsm_msg_cnt, acked) ||
 		    less_eq(acked, n_ptr->bclink.acked))
 			goto exit;
 	}
 
 	/* Skip over packets that node has previously acknowledged */
-	skb_queue_walk(&bcl->outqueue, skb) {
+	skb_queue_walk(&tn->bcl->outqueue, skb) {
 		if (more(buf_seqno(skb), n_ptr->bclink.acked))
 			break;
 	}
 
 	/* Update packets that node is now acknowledging */
-	skb_queue_walk_from_safe(&bcl->outqueue, skb, tmp) {
+	skb_queue_walk_from_safe(&tn->bcl->outqueue, skb, tmp) {
 		if (more(buf_seqno(skb), acked))
 			break;
 
-		next = tipc_skb_queue_next(&bcl->outqueue, skb);
-		if (skb != bcl->next_out) {
+		next = tipc_skb_queue_next(&tn->bcl->outqueue, skb);
+		if (skb != tn->bcl->next_out) {
 			bcbuf_decr_acks(skb);
 		} else {
 			bcbuf_set_acks(skb, 0);
-			bcl->next_out = next;
-			bclink_set_last_sent();
+			tn->bcl->next_out = next;
+			bclink_set_last_sent(net);
 		}
 
 		if (bcbuf_acks(skb) == 0) {
-			__skb_unlink(skb, &bcl->outqueue);
+			__skb_unlink(skb, &tn->bcl->outqueue);
 			kfree_skb(skb);
 			released = 1;
 		}
@@ -311,15 +272,14 @@ void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked)
 	n_ptr->bclink.acked = acked;
 
 	/* Try resolving broadcast link congestion, if necessary */
-	if (unlikely(bcl->next_out)) {
-		tipc_link_push_packets(bcl);
-		bclink_set_last_sent();
+	if (unlikely(tn->bcl->next_out)) {
+		tipc_link_push_packets(tn->bcl);
+		bclink_set_last_sent(net);
 	}
-	if (unlikely(released && !skb_queue_empty(&bcl->waiting_sks)))
+	if (unlikely(released && !skb_queue_empty(&tn->bcl->wakeupq)))
 		n_ptr->action_flags |= TIPC_WAKEUP_BCAST_USERS;
-
 exit:
-	tipc_bclink_unlock();
+	tipc_bclink_unlock(net);
 }
 
 /**
@@ -327,9 +287,12 @@ exit:
  *
  * RCU and node lock set
  */
-void tipc_bclink_update_link_state(struct tipc_node *n_ptr, u32 last_sent)
+void tipc_bclink_update_link_state(struct tipc_node *n_ptr,
+				   u32 last_sent)
 {
 	struct sk_buff *buf;
+	struct net *net = n_ptr->net;
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
 
 	/* Ignore "stale" link state info */
 	if (less_eq(last_sent, n_ptr->bclink.last_in))
@@ -359,18 +322,18 @@ void tipc_bclink_update_link_state(struct tipc_node *n_ptr, u32 last_sent)
 		struct sk_buff *skb = skb_peek(&n_ptr->bclink.deferred_queue);
 		u32 to = skb ? buf_seqno(skb) - 1 : n_ptr->bclink.last_sent;
 
-		tipc_msg_init(msg, BCAST_PROTOCOL, STATE_MSG,
+		tipc_msg_init(tn->own_addr, msg, BCAST_PROTOCOL, STATE_MSG,
 			      INT_H_SIZE, n_ptr->addr);
 		msg_set_non_seq(msg, 1);
-		msg_set_mc_netid(msg, tipc_net_id);
+		msg_set_mc_netid(msg, tn->net_id);
 		msg_set_bcast_ack(msg, n_ptr->bclink.last_in);
 		msg_set_bcgap_after(msg, n_ptr->bclink.last_in);
 		msg_set_bcgap_to(msg, to);
 
-		tipc_bclink_lock();
-		tipc_bearer_send(MAX_BEARERS, buf, NULL);
-		bcl->stats.sent_nacks++;
-		tipc_bclink_unlock();
+		tipc_bclink_lock(net);
+		tipc_bearer_send(net, MAX_BEARERS, buf, NULL);
+		tn->bcl->stats.sent_nacks++;
+		tipc_bclink_unlock(net);
 		kfree_skb(buf);
 
 		n_ptr->bclink.oos_state++;
@@ -383,9 +346,9 @@ void tipc_bclink_update_link_state(struct tipc_node *n_ptr, u32 last_sent)
  * Delay any upcoming NACK by this node if another node has already
  * requested the first message this node is going to ask for.
  */
-static void bclink_peek_nack(struct tipc_msg *msg)
+static void bclink_peek_nack(struct net *net, struct tipc_msg *msg)
 {
-	struct tipc_node *n_ptr = tipc_node_find(msg_destnode(msg));
+	struct tipc_node *n_ptr = tipc_node_find(net, msg_destnode(msg));
 
 	if (unlikely(!n_ptr))
 		return;
@@ -400,17 +363,23 @@ static void bclink_peek_nack(struct tipc_msg *msg)
 	tipc_node_unlock(n_ptr);
 }
 
-/* tipc_bclink_xmit - broadcast buffer chain to all nodes in cluster
+/* tipc_bclink_xmit - deliver buffer chain to all nodes in cluster
  *                    and to identified node local sockets
+ * @net: the applicable net namespace
  * @list: chain of buffers containing message
  * Consumes the buffer chain, except when returning -ELINKCONG
  * Returns 0 if success, otherwise errno: -ELINKCONG,-EHOSTUNREACH,-EMSGSIZE
  */
-int tipc_bclink_xmit(struct sk_buff_head *list)
+int tipc_bclink_xmit(struct net *net, struct sk_buff_head *list)
 {
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
+	struct tipc_link *bcl = tn->bcl;
+	struct tipc_bclink *bclink = tn->bclink;
 	int rc = 0;
 	int bc = 0;
 	struct sk_buff *skb;
+	struct sk_buff_head arrvq;
+	struct sk_buff_head inputq;
 
 	/* Prepare clone of message for local node */
 	skb = tipc_msg_reassemble(list);
@@ -419,32 +388,35 @@ int tipc_bclink_xmit(struct sk_buff_head *list)
 		return -EHOSTUNREACH;
 	}
 
-	/* Broadcast to all other nodes */
+	/* Broadcast to all nodes */
 	if (likely(bclink)) {
-		tipc_bclink_lock();
+		tipc_bclink_lock(net);
 		if (likely(bclink->bcast_nodes.count)) {
-			rc = __tipc_link_xmit(bcl, list);
+			rc = __tipc_link_xmit(net, bcl, list);
 			if (likely(!rc)) {
 				u32 len = skb_queue_len(&bcl->outqueue);
 
-				bclink_set_last_sent();
+				bclink_set_last_sent(net);
 				bcl->stats.queue_sz_counts++;
 				bcl->stats.accu_queue_sz += len;
 			}
 			bc = 1;
 		}
-		tipc_bclink_unlock();
+		tipc_bclink_unlock(net);
 	}
 
 	if (unlikely(!bc))
 		__skb_queue_purge(list);
 
-	/* Deliver message clone */
-	if (likely(!rc))
-		tipc_sk_mcast_rcv(skb);
-	else
+	if (unlikely(rc)) {
 		kfree_skb(skb);
-
+		return rc;
+	}
+	/* Deliver message clone */
+	__skb_queue_head_init(&arrvq);
+	skb_queue_head_init(&inputq);
+	__skb_queue_tail(&arrvq, skb);
+	tipc_sk_mcast_rcv(net, &arrvq, &inputq);
 	return rc;
 }
 
@@ -455,19 +427,21 @@ int tipc_bclink_xmit(struct sk_buff_head *list)
  */
 static void bclink_accept_pkt(struct tipc_node *node, u32 seqno)
 {
+	struct tipc_net *tn = net_generic(node->net, tipc_net_id);
+
 	bclink_update_last_sent(node, seqno);
 	node->bclink.last_in = seqno;
 	node->bclink.oos_state = 0;
-	bcl->stats.recv_info++;
+	tn->bcl->stats.recv_info++;
 
 	/*
 	 * Unicast an ACK periodically, ensuring that
 	 * all nodes in the cluster don't ACK at the same time
 	 */
-	if (((seqno - tipc_own_addr) % TIPC_MIN_LINK_WIN) == 0) {
+	if (((seqno - tn->own_addr) % TIPC_MIN_LINK_WIN) == 0) {
 		tipc_link_proto_xmit(node->active_links[node->addr & 1],
 				     STATE_MSG, 0, 0, 0, 0, 0);
-		bcl->stats.sent_acks++;
+		tn->bcl->stats.sent_acks++;
 	}
 }
 
@@ -476,19 +450,24 @@ static void bclink_accept_pkt(struct tipc_node *node, u32 seqno)
  *
  * RCU is locked, no other locks set
  */
-void tipc_bclink_rcv(struct sk_buff *buf)
+void tipc_bclink_rcv(struct net *net, struct sk_buff *buf)
 {
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
+	struct tipc_link *bcl = tn->bcl;
 	struct tipc_msg *msg = buf_msg(buf);
 	struct tipc_node *node;
 	u32 next_in;
 	u32 seqno;
 	int deferred = 0;
+	int pos = 0;
+	struct sk_buff *iskb;
+	struct sk_buff_head *arrvq, *inputq;
 
 	/* Screen out unwanted broadcast messages */
-	if (msg_mc_netid(msg) != tipc_net_id)
+	if (msg_mc_netid(msg) != tn->net_id)
 		goto exit;
 
-	node = tipc_node_find(msg_prevnode(msg));
+	node = tipc_node_find(net, msg_prevnode(msg));
 	if (unlikely(!node))
 		goto exit;
 
@@ -500,18 +479,18 @@ void tipc_bclink_rcv(struct sk_buff *buf)
 	if (unlikely(msg_user(msg) == BCAST_PROTOCOL)) {
 		if (msg_type(msg) != STATE_MSG)
 			goto unlock;
-		if (msg_destnode(msg) == tipc_own_addr) {
+		if (msg_destnode(msg) == tn->own_addr) {
 			tipc_bclink_acknowledge(node, msg_bcast_ack(msg));
 			tipc_node_unlock(node);
-			tipc_bclink_lock();
+			tipc_bclink_lock(net);
 			bcl->stats.recv_nacks++;
-			bclink->retransmit_to = node;
-			bclink_retransmit_pkt(msg_bcgap_after(msg),
+			tn->bclink->retransmit_to = node;
+			bclink_retransmit_pkt(tn, msg_bcgap_after(msg),
 					      msg_bcgap_to(msg));
-			tipc_bclink_unlock();
+			tipc_bclink_unlock(net);
 		} else {
 			tipc_node_unlock(node);
-			bclink_peek_nack(msg);
+			bclink_peek_nack(net, msg);
 		}
 		goto exit;
 	}
@@ -519,52 +498,54 @@ void tipc_bclink_rcv(struct sk_buff *buf)
 	/* Handle in-sequence broadcast message */
 	seqno = msg_seqno(msg);
 	next_in = mod(node->bclink.last_in + 1);
+	arrvq = &tn->bclink->arrvq;
+	inputq = &tn->bclink->inputq;
 
 	if (likely(seqno == next_in)) {
 receive:
 		/* Deliver message to destination */
 		if (likely(msg_isdata(msg))) {
-			tipc_bclink_lock();
+			tipc_bclink_lock(net);
 			bclink_accept_pkt(node, seqno);
-			tipc_bclink_unlock();
+			spin_lock_bh(&inputq->lock);
+			__skb_queue_tail(arrvq, buf);
+			spin_unlock_bh(&inputq->lock);
+			node->action_flags |= TIPC_BCAST_MSG_EVT;
+			tipc_bclink_unlock(net);
 			tipc_node_unlock(node);
-			if (likely(msg_mcast(msg)))
-				tipc_sk_mcast_rcv(buf);
-			else
-				kfree_skb(buf);
 		} else if (msg_user(msg) == MSG_BUNDLER) {
-			tipc_bclink_lock();
+			tipc_bclink_lock(net);
 			bclink_accept_pkt(node, seqno);
 			bcl->stats.recv_bundles++;
 			bcl->stats.recv_bundled += msg_msgcnt(msg);
-			tipc_bclink_unlock();
+			pos = 0;
+			while (tipc_msg_extract(buf, &iskb, &pos)) {
+				spin_lock_bh(&inputq->lock);
+				__skb_queue_tail(arrvq, iskb);
+				spin_unlock_bh(&inputq->lock);
+			}
+			node->action_flags |= TIPC_BCAST_MSG_EVT;
+			tipc_bclink_unlock(net);
 			tipc_node_unlock(node);
-			tipc_link_bundle_rcv(buf);
 		} else if (msg_user(msg) == MSG_FRAGMENTER) {
 			tipc_buf_append(&node->bclink.reasm_buf, &buf);
 			if (unlikely(!buf && !node->bclink.reasm_buf))
 				goto unlock;
-			tipc_bclink_lock();
+			tipc_bclink_lock(net);
 			bclink_accept_pkt(node, seqno);
 			bcl->stats.recv_fragments++;
 			if (buf) {
 				bcl->stats.recv_fragmented++;
 				msg = buf_msg(buf);
-				tipc_bclink_unlock();
+				tipc_bclink_unlock(net);
 				goto receive;
 			}
-			tipc_bclink_unlock();
-			tipc_node_unlock(node);
-		} else if (msg_user(msg) == NAME_DISTRIBUTOR) {
-			tipc_bclink_lock();
-			bclink_accept_pkt(node, seqno);
-			tipc_bclink_unlock();
+			tipc_bclink_unlock(net);
 			tipc_node_unlock(node);
-			tipc_named_rcv(buf);
 		} else {
-			tipc_bclink_lock();
+			tipc_bclink_lock(net);
 			bclink_accept_pkt(node, seqno);
-			tipc_bclink_unlock();
+			tipc_bclink_unlock(net);
 			tipc_node_unlock(node);
 			kfree_skb(buf);
 		}
@@ -602,14 +583,14 @@ receive:
 		buf = NULL;
 	}
 
-	tipc_bclink_lock();
+	tipc_bclink_lock(net);
 
 	if (deferred)
 		bcl->stats.deferred_recv++;
 	else
 		bcl->stats.duplicates++;
 
-	tipc_bclink_unlock();
+	tipc_bclink_unlock(net);
 
 unlock:
 	tipc_node_unlock(node);
@@ -620,7 +601,7 @@ exit:
 u32 tipc_bclink_acks_missing(struct tipc_node *n_ptr)
 {
 	return (n_ptr->bclink.recv_permitted &&
-		(tipc_bclink_get_last_sent() != n_ptr->bclink.acked));
+		(tipc_bclink_get_last_sent(n_ptr->net) != n_ptr->bclink.acked));
 }
 
 
@@ -633,11 +614,15 @@ u32 tipc_bclink_acks_missing(struct tipc_node *n_ptr)
  * Returns 0 (packet sent successfully) under all circumstances,
  * since the broadcast link's pseudo-bearer never blocks
  */
-static int tipc_bcbearer_send(struct sk_buff *buf, struct tipc_bearer *unused1,
+static int tipc_bcbearer_send(struct net *net, struct sk_buff *buf,
+			      struct tipc_bearer *unused1,
 			      struct tipc_media_addr *unused2)
 {
 	int bp_index;
 	struct tipc_msg *msg = buf_msg(buf);
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
+	struct tipc_bcbearer *bcbearer = tn->bcbearer;
+	struct tipc_bclink *bclink = tn->bclink;
 
 	/* Prepare broadcast link message for reliable transmission,
 	 * if first time trying to send it;
@@ -647,8 +632,8 @@ static int tipc_bcbearer_send(struct sk_buff *buf, struct tipc_bearer *unused1,
 	if (likely(!msg_non_seq(buf_msg(buf)))) {
 		bcbuf_set_acks(buf, bclink->bcast_nodes.count);
 		msg_set_non_seq(msg, 1);
-		msg_set_mc_netid(msg, tipc_net_id);
-		bcl->stats.sent_info++;
+		msg_set_mc_netid(msg, tn->net_id);
+		tn->bcl->stats.sent_info++;
 
 		if (WARN_ON(!bclink->bcast_nodes.count)) {
 			dump_stack();
@@ -677,13 +662,14 @@ static int tipc_bcbearer_send(struct sk_buff *buf, struct tipc_bearer *unused1,
 
 		if (bp_index == 0) {
 			/* Use original buffer for first bearer */
-			tipc_bearer_send(b->identity, buf, &b->bcast_addr);
+			tipc_bearer_send(net, b->identity, buf, &b->bcast_addr);
 		} else {
 			/* Avoid concurrent buffer access */
 			tbuf = pskb_copy_for_clone(buf, GFP_ATOMIC);
 			if (!tbuf)
 				break;
-			tipc_bearer_send(b->identity, tbuf, &b->bcast_addr);
+			tipc_bearer_send(net, b->identity, tbuf,
+					 &b->bcast_addr);
 			kfree_skb(tbuf); /* Bearer keeps a clone */
 		}
 		if (bcbearer->remains_new.count == 0)
@@ -698,15 +684,18 @@ static int tipc_bcbearer_send(struct sk_buff *buf, struct tipc_bearer *unused1,
 /**
  * tipc_bcbearer_sort - create sets of bearer pairs used by broadcast bearer
  */
-void tipc_bcbearer_sort(struct tipc_node_map *nm_ptr, u32 node, bool action)
+void tipc_bcbearer_sort(struct net *net, struct tipc_node_map *nm_ptr,
+			u32 node, bool action)
 {
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
+	struct tipc_bcbearer *bcbearer = tn->bcbearer;
 	struct tipc_bcbearer_pair *bp_temp = bcbearer->bpairs_temp;
 	struct tipc_bcbearer_pair *bp_curr;
 	struct tipc_bearer *b;
 	int b_index;
 	int pri;
 
-	tipc_bclink_lock();
+	tipc_bclink_lock(net);
 
 	if (action)
 		tipc_nmap_add(nm_ptr, node);
@@ -718,7 +707,7 @@ void tipc_bcbearer_sort(struct tipc_node_map *nm_ptr, u32 node, bool action)
 
 	rcu_read_lock();
 	for (b_index = 0; b_index < MAX_BEARERS; b_index++) {
-		b = rcu_dereference_rtnl(bearer_list[b_index]);
+		b = rcu_dereference_rtnl(tn->bearer_list[b_index]);
 		if (!b || !b->nodes.count)
 			continue;
 
@@ -753,7 +742,7 @@ void tipc_bcbearer_sort(struct tipc_node_map *nm_ptr, u32 node, bool action)
 		bp_curr++;
 	}
 
-	tipc_bclink_unlock();
+	tipc_bclink_unlock(net);
 }
 
 static int __tipc_nl_add_bc_link_stat(struct sk_buff *skb,
@@ -807,19 +796,21 @@ msg_full:
 	return -EMSGSIZE;
 }
 
-int tipc_nl_add_bc_link(struct tipc_nl_msg *msg)
+int tipc_nl_add_bc_link(struct net *net, struct tipc_nl_msg *msg)
 {
 	int err;
 	void *hdr;
 	struct nlattr *attrs;
 	struct nlattr *prop;
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
+	struct tipc_link *bcl = tn->bcl;
 
 	if (!bcl)
 		return 0;
 
-	tipc_bclink_lock();
+	tipc_bclink_lock(net);
 
-	hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_v2_family,
+	hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family,
 			  NLM_F_MULTI, TIPC_NL_LINK_GET);
 	if (!hdr)
 		return -EMSGSIZE;
@@ -852,7 +843,7 @@ int tipc_nl_add_bc_link(struct tipc_nl_msg *msg)
 	if (err)
 		goto attr_msg_full;
 
-	tipc_bclink_unlock();
+	tipc_bclink_unlock(net);
 	nla_nest_end(msg->skb, attrs);
 	genlmsg_end(msg->skb, hdr);
 
@@ -863,79 +854,49 @@ prop_msg_full:
 attr_msg_full:
 	nla_nest_cancel(msg->skb, attrs);
 msg_full:
-	tipc_bclink_unlock();
+	tipc_bclink_unlock(net);
 	genlmsg_cancel(msg->skb, hdr);
 
 	return -EMSGSIZE;
 }
 
-int tipc_bclink_stats(char *buf, const u32 buf_size)
+int tipc_bclink_reset_stats(struct net *net)
 {
-	int ret;
-	struct tipc_stats *s;
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
+	struct tipc_link *bcl = tn->bcl;
 
 	if (!bcl)
-		return 0;
-
-	tipc_bclink_lock();
-
-	s = &bcl->stats;
-
-	ret = tipc_snprintf(buf, buf_size, "Link <%s>\n"
-			    "  Window:%u packets\n",
-			    bcl->name, bcl->queue_limit[0]);
-	ret += tipc_snprintf(buf + ret, buf_size - ret,
-			     "  RX packets:%u fragments:%u/%u bundles:%u/%u\n",
-			     s->recv_info, s->recv_fragments,
-			     s->recv_fragmented, s->recv_bundles,
-			     s->recv_bundled);
-	ret += tipc_snprintf(buf + ret, buf_size - ret,
-			     "  TX packets:%u fragments:%u/%u bundles:%u/%u\n",
-			     s->sent_info, s->sent_fragments,
-			     s->sent_fragmented, s->sent_bundles,
-			     s->sent_bundled);
-	ret += tipc_snprintf(buf + ret, buf_size - ret,
-			     "  RX naks:%u defs:%u dups:%u\n",
-			     s->recv_nacks, s->deferred_recv, s->duplicates);
-	ret += tipc_snprintf(buf + ret, buf_size - ret,
-			     "  TX naks:%u acks:%u dups:%u\n",
-			     s->sent_nacks, s->sent_acks, s->retransmitted);
-	ret += tipc_snprintf(buf + ret, buf_size - ret,
-			     "  Congestion link:%u  Send queue max:%u avg:%u\n",
-			     s->link_congs, s->max_queue_sz,
-			     s->queue_sz_counts ?
-			     (s->accu_queue_sz / s->queue_sz_counts) : 0);
-
-	tipc_bclink_unlock();
-	return ret;
-}
-
-int tipc_bclink_reset_stats(void)
-{
-	if (!bcl)
 		return -ENOPROTOOPT;
 
-	tipc_bclink_lock();
+	tipc_bclink_lock(net);
 	memset(&bcl->stats, 0, sizeof(bcl->stats));
-	tipc_bclink_unlock();
+	tipc_bclink_unlock(net);
 	return 0;
 }
 
-int tipc_bclink_set_queue_limits(u32 limit)
+int tipc_bclink_set_queue_limits(struct net *net, u32 limit)
 {
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
+	struct tipc_link *bcl = tn->bcl;
+
 	if (!bcl)
 		return -ENOPROTOOPT;
 	if ((limit < TIPC_MIN_LINK_WIN) || (limit > TIPC_MAX_LINK_WIN))
 		return -EINVAL;
 
-	tipc_bclink_lock();
+	tipc_bclink_lock(net);
 	tipc_link_set_queue_limits(bcl, limit);
-	tipc_bclink_unlock();
+	tipc_bclink_unlock(net);
 	return 0;
 }
 
-int tipc_bclink_init(void)
+int tipc_bclink_init(struct net *net)
 {
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
+	struct tipc_bcbearer *bcbearer;
+	struct tipc_bclink *bclink;
+	struct tipc_link *bcl;
+
 	bcbearer = kzalloc(sizeof(*bcbearer), GFP_ATOMIC);
 	if (!bcbearer)
 		return -ENOMEM;
@@ -954,30 +915,39 @@ int tipc_bclink_init(void)
 	spin_lock_init(&bclink->lock);
 	__skb_queue_head_init(&bcl->outqueue);
 	__skb_queue_head_init(&bcl->deferred_queue);
-	skb_queue_head_init(&bcl->waiting_sks);
+	skb_queue_head_init(&bcl->wakeupq);
 	bcl->next_out_no = 1;
 	spin_lock_init(&bclink->node.lock);
-	__skb_queue_head_init(&bclink->node.waiting_sks);
+	__skb_queue_head_init(&bclink->arrvq);
+	skb_queue_head_init(&bclink->inputq);
 	bcl->owner = &bclink->node;
+	bcl->owner->net = net;
 	bcl->max_pkt = MAX_PKT_DEFAULT_MCAST;
 	tipc_link_set_queue_limits(bcl, BCLINK_WIN_DEFAULT);
 	bcl->bearer_id = MAX_BEARERS;
-	rcu_assign_pointer(bearer_list[MAX_BEARERS], &bcbearer->bearer);
+	rcu_assign_pointer(tn->bearer_list[MAX_BEARERS], &bcbearer->bearer);
 	bcl->state = WORKING_WORKING;
+	bcl->pmsg = (struct tipc_msg *)&bcl->proto_msg;
+	msg_set_prevnode(bcl->pmsg, tn->own_addr);
 	strlcpy(bcl->name, tipc_bclink_name, TIPC_MAX_LINK_NAME);
+	tn->bcbearer = bcbearer;
+	tn->bclink = bclink;
+	tn->bcl = bcl;
 	return 0;
 }
 
-void tipc_bclink_stop(void)
+void tipc_bclink_stop(struct net *net)
 {
-	tipc_bclink_lock();
-	tipc_link_purge_queues(bcl);
-	tipc_bclink_unlock();
+	struct tipc_net *tn = net_generic(net, tipc_net_id);
 
-	RCU_INIT_POINTER(bearer_list[BCBEARER], NULL);
+	tipc_bclink_lock(net);
+	tipc_link_purge_queues(tn->bcl);
+	tipc_bclink_unlock(net);
+
+	RCU_INIT_POINTER(tn->bearer_list[BCBEARER], NULL);
 	synchronize_net();
-	kfree(bcbearer);
-	kfree(bclink);
+	kfree(tn->bcbearer);
+	kfree(tn->bclink);
 }
 
 /**
@@ -1037,50 +1007,3 @@ static void tipc_nmap_diff(struct tipc_node_map *nm_a,
 		}
 	}
 }
-
-/**
- * tipc_port_list_add - add a port to a port list, ensuring no duplicates
- */
-void tipc_port_list_add(struct tipc_port_list *pl_ptr, u32 port)
-{
-	struct tipc_port_list *item = pl_ptr;
-	int i;
-	int item_sz = PLSIZE;
-	int cnt = pl_ptr->count;
-
-	for (; ; cnt -= item_sz, item = item->next) {
-		if (cnt < PLSIZE)
-			item_sz = cnt;
-		for (i = 0; i < item_sz; i++)
-			if (item->ports[i] == port)
-				return;
-		if (i < PLSIZE) {
-			item->ports[i] = port;
-			pl_ptr->count++;
-			return;
-		}
-		if (!item->next) {
-			item->next = kmalloc(sizeof(*item), GFP_ATOMIC);
-			if (!item->next) {
-				pr_warn("Incomplete multicast delivery, no memory\n");
-				return;
-			}
-			item->next->next = NULL;
-		}
-	}
-}
-
-/**
- * tipc_port_list_free - free dynamically created entries in port_list chain
- *
- */
-void tipc_port_list_free(struct tipc_port_list *pl_ptr)
-{
-	struct tipc_port_list *item;
-	struct tipc_port_list *next;
-
-	for (item = pl_ptr->next; item; item = next) {
-		next = item->next;
-		kfree(item);
-	}
-}