Merge branch 'tipc-Jun24-2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/net-next-2.6

12 files changed, 276 insertions, 381 deletions

diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c
index fa68d1e9ff4b..759b318b5ffb 100644
--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -552,12 +552,16 @@ static int tipc_bcbearer_send(struct sk_buff *buf,
 	if (likely(!msg_non_seq(buf_msg(buf)))) {
 		struct tipc_msg *msg;
 
-		assert(tipc_bcast_nmap.count != 0);
 		bcbuf_set_acks(buf, tipc_bcast_nmap.count);
 		msg = buf_msg(buf);
 		msg_set_non_seq(msg, 1);
 		msg_set_mc_netid(msg, tipc_net_id);
 		bcl->stats.sent_info++;
+
+		if (WARN_ON(!tipc_bcast_nmap.count)) {
+			dump_stack();
+			return 0;
+		}
 	}
 
 	/* Send buffer over bearers until all targets reached */
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index 85209eadfae6..85eba9c08ee9 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -402,7 +402,6 @@ void tipc_bearer_lock_push(struct tipc_bearer *b_ptr)
 void tipc_continue(struct tipc_bearer *b_ptr)
 {
 	spin_lock_bh(&b_ptr->lock);
-	b_ptr->continue_count++;
 	if (!list_empty(&b_ptr->cong_links))
 		tipc_k_signal((Handler)tipc_bearer_lock_push, (unsigned long)b_ptr);
 	b_ptr->blocked = 0;
diff --git a/net/tipc/bearer.h b/net/tipc/bearer.h
index 31d6172b20fd..5ad70eff1ebf 100644
--- a/net/tipc/bearer.h
+++ b/net/tipc/bearer.h
@@ -107,7 +107,6 @@ struct media {
  * @link_req: ptr to (optional) structure making periodic link setup requests
  * @links: list of non-congested links associated with bearer
  * @cong_links: list of congested links associated with bearer
- * @continue_count: # of times bearer has resumed after congestion or blocking
  * @active: non-zero if bearer structure is represents a bearer
  * @net_plane: network plane ('A' through 'H') currently associated with bearer
  * @nodes: indicates which nodes in cluster can be reached through bearer
@@ -129,7 +128,6 @@ struct tipc_bearer {
 	struct link_req *link_req;
 	struct list_head links;
 	struct list_head cong_links;
-	u32 continue_count;
 	int active;
 	char net_plane;
 	struct tipc_node_map nodes;
diff --git a/net/tipc/core.h b/net/tipc/core.h
index 436dda1159d2..d234a98a460a 100644
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -62,12 +62,6 @@ struct tipc_msg;	/* msg.h */
 struct print_buf;	/* log.h */
 
 /*
- * TIPC sanity test macros
- */
-
-#define assert(i)  BUG_ON(!(i))
-
-/*
  * TIPC system monitoring code
  */
 
diff --git a/net/tipc/link.c b/net/tipc/link.c
index 5ed4b4f7452d..f89570c54f54 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -1572,7 +1572,7 @@ static struct sk_buff *link_insert_deferred_queue(struct link *l_ptr,
 static int link_recv_buf_validate(struct sk_buff *buf)
 {
 	static u32 min_data_hdr_size[8] = {
-		SHORT_H_SIZE, MCAST_H_SIZE, LONG_H_SIZE, DIR_MSG_H_SIZE,
+		SHORT_H_SIZE, MCAST_H_SIZE, NAMED_H_SIZE, BASIC_H_SIZE,
 		MAX_H_SIZE, MAX_H_SIZE, MAX_H_SIZE, MAX_H_SIZE
 		};
 
@@ -2553,7 +2553,7 @@ int tipc_link_recv_fragment(struct sk_buff **pending, struct sk_buff **fb,
 		u32 msg_sz = msg_size(imsg);
 		u32 fragm_sz = msg_data_sz(fragm);
 		u32 exp_fragm_cnt = msg_sz/fragm_sz + !!(msg_sz % fragm_sz);
-		u32 max =  TIPC_MAX_USER_MSG_SIZE + LONG_H_SIZE;
+		u32 max =  TIPC_MAX_USER_MSG_SIZE + NAMED_H_SIZE;
 		if (msg_type(imsg) == TIPC_MCAST_MSG)
 			max = TIPC_MAX_USER_MSG_SIZE + MCAST_H_SIZE;
 		if (msg_size(imsg) > max) {
@@ -2882,7 +2882,7 @@ static int tipc_link_stats(const char *name, char *buf, const u32 buf_size)
 		profile_total = 1;
 	tipc_printf(&pb, "  TX profile sample:%u packets  average:%u octets\n"
 			 "  0-64:%u%% -256:%u%% -1024:%u%% -4096:%u%% "
-			 "-16354:%u%% -32768:%u%% -66000:%u%%\n",
+			 "-16384:%u%% -32768:%u%% -66000:%u%%\n",
 		    l_ptr->stats.msg_length_counts,
 		    l_ptr->stats.msg_lengths_total / profile_total,
 		    percent(l_ptr->stats.msg_length_profile[0], profile_total),
diff --git a/net/tipc/msg.c b/net/tipc/msg.c
index 03e57bf92c73..83d50967910c 100644
--- a/net/tipc/msg.c
+++ b/net/tipc/msg.c
@@ -61,10 +61,8 @@ void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type,
 	msg_set_size(m, hsize);
 	msg_set_prevnode(m, tipc_own_addr);
 	msg_set_type(m, type);
-	if (!msg_short(m)) {
-		msg_set_orignode(m, tipc_own_addr);
-		msg_set_destnode(m, destnode);
-	}
+	msg_set_orignode(m, tipc_own_addr);
+	msg_set_destnode(m, destnode);
 }
 
 /**
diff --git a/net/tipc/msg.h b/net/tipc/msg.h
index 8452454731fa..d93178f2e852 100644
--- a/net/tipc/msg.h
+++ b/net/tipc/msg.h
@@ -68,10 +68,10 @@
  * Message header sizes
  */
 
-#define SHORT_H_SIZE              24	/* Connected, in-cluster messages */
-#define DIR_MSG_H_SIZE            32	/* Directly addressed messages */
-#define LONG_H_SIZE               40	/* Named messages */
-#define MCAST_H_SIZE              44	/* Multicast messages */
+#define SHORT_H_SIZE              24	/* In-cluster basic payload message */
+#define BASIC_H_SIZE              32	/* Basic payload message */
+#define NAMED_H_SIZE              40	/* Named payload message */
+#define MCAST_H_SIZE              44	/* Multicast payload message */
 #define INT_H_SIZE                40	/* Internal messages */
 #define MIN_H_SIZE                24	/* Smallest legal TIPC header size */
 #define MAX_H_SIZE                60	/* Largest possible TIPC header size */
@@ -311,26 +311,6 @@ static inline void msg_set_seqno(struct tipc_msg *m, u32 n)
 }
 
 /*
- * TIPC may utilize the "link ack #" and "link seq #" fields of a short
- * message header to hold the destination node for the message, since the
- * normal "dest node" field isn't present.  This cache is only referenced
- * when required, so populating the cache of a longer message header is
- * harmless (as long as the header has the two link sequence fields present).
- *
- * Note: Host byte order is OK here, since the info never goes off-card.
- */
-
-static inline u32 msg_destnode_cache(struct tipc_msg *m)
-{
-	return m->hdr[2];
-}
-
-static inline void msg_set_destnode_cache(struct tipc_msg *m, u32 dnode)
-{
-	m->hdr[2] = dnode;
-}
-
-/*
  * Words 3-10
  */
 
@@ -377,7 +357,7 @@ static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p)
 
 static inline int msg_short(struct tipc_msg *m)
 {
-	return msg_hdr_sz(m) == 24;
+	return msg_hdr_sz(m) == SHORT_H_SIZE;
 }
 
 static inline u32 msg_orignode(struct tipc_msg *m)
@@ -635,7 +615,7 @@ static inline u32 msg_link_selector(struct tipc_msg *m)
 
 static inline void msg_set_link_selector(struct tipc_msg *m, u32 n)
 {
-	msg_set_bits(m, 4, 0, 1, (n & 1));
+	msg_set_bits(m, 4, 0, 1, n);
 }
 
 /*
@@ -659,7 +639,7 @@ static inline u32 msg_probe(struct tipc_msg *m)
 
 static inline void msg_set_probe(struct tipc_msg *m, u32 val)
 {
-	msg_set_bits(m, 5, 0, 1, (val & 1));
+	msg_set_bits(m, 5, 0, 1, val);
 }
 
 static inline char msg_net_plane(struct tipc_msg *m)
diff --git a/net/tipc/name_distr.c b/net/tipc/name_distr.c
index 80025a1b3bfd..cd356e504332 100644
--- a/net/tipc/name_distr.c
+++ b/net/tipc/name_distr.c
@@ -94,13 +94,13 @@ static void publ_to_item(struct distr_item *i, struct publication *p)
 
 static struct sk_buff *named_prepare_buf(u32 type, u32 size, u32 dest)
 {
-	struct sk_buff *buf = tipc_buf_acquire(LONG_H_SIZE + size);
+	struct sk_buff *buf = tipc_buf_acquire(INT_H_SIZE + size);
 	struct tipc_msg *msg;
 
 	if (buf != NULL) {
 		msg = buf_msg(buf);
-		tipc_msg_init(msg, NAME_DISTRIBUTOR, type, LONG_H_SIZE, dest);
-		msg_set_size(msg, LONG_H_SIZE + size);
+		tipc_msg_init(msg, NAME_DISTRIBUTOR, type, INT_H_SIZE, dest);
+		msg_set_size(msg, INT_H_SIZE + size);
 	}
 	return buf;
 }
diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c
index 205ed4a4e186..46e6b6c2ecc9 100644
--- a/net/tipc/name_table.c
+++ b/net/tipc/name_table.c
@@ -2,7 +2,7 @@
  * net/tipc/name_table.c: TIPC name table code
  *
  * Copyright (c) 2000-2006, Ericsson AB
- * Copyright (c) 2004-2008, Wind River Systems
+ * Copyright (c) 2004-2008, 2010-2011, Wind River Systems
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -44,9 +44,7 @@
 static int tipc_nametbl_size = 1024;		/* must be a power of 2 */
 
 /**
- * struct sub_seq - container for all published instances of a name sequence
- * @lower: name sequence lower bound
- * @upper: name sequence upper bound
+ * struct name_info - name sequence publication info
  * @node_list: circular list of publications made by own node
  * @cluster_list: circular list of publications made by own cluster
  * @zone_list: circular list of publications made by own zone
@@ -59,18 +57,29 @@ static int tipc_nametbl_size = 1024;		/* must be a power of 2 */
  *       (The cluster and node lists may be empty.)
  */
 
-struct sub_seq {
-	u32 lower;
-	u32 upper;
-	struct publication *node_list;
-	struct publication *cluster_list;
-	struct publication *zone_list;
+struct name_info {
+	struct list_head node_list;
+	struct list_head cluster_list;
+	struct list_head zone_list;
 	u32 node_list_size;
 	u32 cluster_list_size;
 	u32 zone_list_size;
 };
 
 /**
+ * struct sub_seq - container for all published instances of a name sequence
+ * @lower: name sequence lower bound
+ * @upper: name sequence upper bound
+ * @info: pointer to name sequence publication info
+ */
+
+struct sub_seq {
+	u32 lower;
+	u32 upper;
+	struct name_info *info;
+};
+
+/**
  * struct name_seq - container for all published instances of a name type
  * @type: 32 bit 'type' value for name sequence
  * @sseq: pointer to dynamically-sized array of sub-sequences of this 'type';
@@ -246,6 +255,7 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
 	struct subscription *st;
 	struct publication *publ;
 	struct sub_seq *sseq;
+	struct name_info *info;
 	int created_subseq = 0;
 
 	sseq = nameseq_find_subseq(nseq, lower);
@@ -258,6 +268,8 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
 			     type, lower, upper);
 			return NULL;
 		}
+
+		info = sseq->info;
 	} else {
 		u32 inspos;
 		struct sub_seq *freesseq;
@@ -292,6 +304,17 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
 			nseq->alloc *= 2;
 		}
 
+		info = kzalloc(sizeof(*info), GFP_ATOMIC);
+		if (!info) {
+			warn("Cannot publish {%u,%u,%u}, no memory\n",
+			     type, lower, upper);
+			return NULL;
+		}
+
+		INIT_LIST_HEAD(&info->node_list);
+		INIT_LIST_HEAD(&info->cluster_list);
+		INIT_LIST_HEAD(&info->zone_list);
+
 		/* Insert new sub-sequence */
 
 		sseq = &nseq->sseqs[inspos];
@@ -301,6 +324,7 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
 		nseq->first_free++;
 		sseq->lower = lower;
 		sseq->upper = upper;
+		sseq->info = info;
 		created_subseq = 1;
 	}
 
@@ -310,33 +334,17 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
 	if (!publ)
 		return NULL;
 
-	sseq->zone_list_size++;
-	if (!sseq->zone_list)
-		sseq->zone_list = publ->zone_list_next = publ;
-	else {
-		publ->zone_list_next = sseq->zone_list->zone_list_next;
-		sseq->zone_list->zone_list_next = publ;
-	}
+	list_add(&publ->zone_list, &info->zone_list);
+	info->zone_list_size++;
 
 	if (in_own_cluster(node)) {
-		sseq->cluster_list_size++;
-		if (!sseq->cluster_list)
-			sseq->cluster_list = publ->cluster_list_next = publ;
-		else {
-			publ->cluster_list_next =
-			sseq->cluster_list->cluster_list_next;
-			sseq->cluster_list->cluster_list_next = publ;
-		}
+		list_add(&publ->cluster_list, &info->cluster_list);
+		info->cluster_list_size++;
 	}
 
 	if (node == tipc_own_addr) {
-		sseq->node_list_size++;
-		if (!sseq->node_list)
-			sseq->node_list = publ->node_list_next = publ;
-		else {
-			publ->node_list_next = sseq->node_list->node_list_next;
-			sseq->node_list->node_list_next = publ;
-		}
+		list_add(&publ->node_list, &info->node_list);
+		info->node_list_size++;
 	}
 
 	/*
@@ -370,9 +378,8 @@ static struct publication *tipc_nameseq_remove_publ(struct name_seq *nseq, u32 i
 						    u32 node, u32 ref, u32 key)
 {
 	struct publication *publ;
-	struct publication *curr;
-	struct publication *prev;
 	struct sub_seq *sseq = nameseq_find_subseq(nseq, inst);
+	struct name_info *info;
 	struct sub_seq *free;
 	struct subscription *s, *st;
 	int removed_subseq = 0;
@@ -380,96 +387,41 @@ static struct publication *tipc_nameseq_remove_publ(struct name_seq *nseq, u32 i
 	if (!sseq)
 		return NULL;
 
-	/* Remove publication from zone scope list */
+	info = sseq->info;
 
-	prev = sseq->zone_list;
-	publ = sseq->zone_list->zone_list_next;
-	while ((publ->key != key) || (publ->ref != ref) ||
-	       (publ->node && (publ->node != node))) {
-		prev = publ;
-		publ = publ->zone_list_next;
-		if (prev == sseq->zone_list) {
+	/* Locate publication, if it exists */
 
-			/* Prevent endless loop if publication not found */
-
-			return NULL;
-		}
-	}
-	if (publ != sseq->zone_list)
-		prev->zone_list_next = publ->zone_list_next;
-	else if (publ->zone_list_next != publ) {
-		prev->zone_list_next = publ->zone_list_next;
-		sseq->zone_list = publ->zone_list_next;
-	} else {
-		sseq->zone_list = NULL;
+	list_for_each_entry(publ, &info->zone_list, zone_list) {
+		if ((publ->key == key) && (publ->ref == ref) &&
+		    (!publ->node || (publ->node == node)))
+			goto found;
 	}
-	sseq->zone_list_size--;
+	return NULL;
+
+found:
+	/* Remove publication from zone scope list */
+
+	list_del(&publ->zone_list);
+	info->zone_list_size--;
 
 	/* Remove publication from cluster scope list, if present */
 
 	if (in_own_cluster(node)) {
-		prev = sseq->cluster_list;
-		curr = sseq->cluster_list->cluster_list_next;
-		while (curr != publ) {
-			prev = curr;
-			curr = curr->cluster_list_next;
-			if (prev == sseq->cluster_list) {
-
-				/* Prevent endless loop for malformed list */
-
-				err("Unable to de-list cluster publication\n"
-				    "{%u%u}, node=0x%x, ref=%u, key=%u)\n",
-				    publ->type, publ->lower, publ->node,
-				    publ->ref, publ->key);
-				goto end_cluster;
-			}
-		}
-		if (publ != sseq->cluster_list)
-			prev->cluster_list_next = publ->cluster_list_next;
-		else if (publ->cluster_list_next != publ) {
-			prev->cluster_list_next = publ->cluster_list_next;
-			sseq->cluster_list = publ->cluster_list_next;
-		} else {
-			sseq->cluster_list = NULL;
-		}
-		sseq->cluster_list_size--;
+		list_del(&publ->cluster_list);
+		info->cluster_list_size--;
 	}
-end_cluster:
 
 	/* Remove publication from node scope list, if present */
 
 	if (node == tipc_own_addr) {
-		prev = sseq->node_list;
-		curr = sseq->node_list->node_list_next;
-		while (curr != publ) {
-			prev = curr;
-			curr = curr->node_list_next;
-			if (prev == sseq->node_list) {
-
-				/* Prevent endless loop for malformed list */
-
-				err("Unable to de-list node publication\n"
-				    "{%u%u}, node=0x%x, ref=%u, key=%u)\n",
-				    publ->type, publ->lower, publ->node,
-				    publ->ref, publ->key);
-				goto end_node;
-			}
-		}
-		if (publ != sseq->node_list)
-			prev->node_list_next = publ->node_list_next;
-		else if (publ->node_list_next != publ) {
-			prev->node_list_next = publ->node_list_next;
-			sseq->node_list = publ->node_list_next;
-		} else {
-			sseq->node_list = NULL;
-		}
-		sseq->node_list_size--;
+		list_del(&publ->node_list);
+		info->node_list_size--;
 	}
-end_node:
 
 	/* Contract subseq list if no more publications for that subseq */
 
-	if (!sseq->zone_list) {
+	if (list_empty(&info->zone_list)) {
+		kfree(info);
 		free = &nseq->sseqs[nseq->first_free--];
 		memmove(sseq, sseq + 1, (free - (sseq + 1)) * sizeof(*sseq));
 		removed_subseq = 1;
@@ -506,12 +458,12 @@ static void tipc_nameseq_subscribe(struct name_seq *nseq, struct subscription *s
 		return;
 
 	while (sseq != &nseq->sseqs[nseq->first_free]) {
-		struct publication *zl = sseq->zone_list;
-		if (zl && tipc_subscr_overlap(s, sseq->lower, sseq->upper)) {
-			struct publication *crs = zl;
+		if (tipc_subscr_overlap(s, sseq->lower, sseq->upper)) {
+			struct publication *crs;
+			struct name_info *info = sseq->info;
 			int must_report = 1;
 
-			do {
+			list_for_each_entry(crs, &info->zone_list, zone_list) {
 				tipc_subscr_report_overlap(s,
 							   sseq->lower,
 							   sseq->upper,
@@ -520,8 +472,7 @@ static void tipc_nameseq_subscribe(struct name_seq *nseq, struct subscription *s
 							   crs->node,
 							   must_report);
 				must_report = 0;
-				crs = crs->zone_list_next;
-			} while (crs != zl);
+			}
 		}
 		sseq++;
 	}
@@ -591,9 +542,10 @@ struct publication *tipc_nametbl_remove_publ(u32 type, u32 lower,
 u32 tipc_nametbl_translate(u32 type, u32 instance, u32 *destnode)
 {
 	struct sub_seq *sseq;
-	struct publication *publ = NULL;
+	struct name_info *info;
+	struct publication *publ;
 	struct name_seq *seq;
-	u32 ref;
+	u32 ref = 0;
 
 	if (!tipc_in_scope(*destnode, tipc_own_addr))
 		return 0;
@@ -606,55 +558,57 @@ u32 tipc_nametbl_translate(u32 type, u32 instance, u32 *destnode)
 	if (unlikely(!sseq))
 		goto not_found;
 	spin_lock_bh(&seq->lock);
+	info = sseq->info;
 
 	/* Closest-First Algorithm: */
 	if (likely(!*destnode)) {
-		publ = sseq->node_list;
-		if (publ) {
-			sseq->node_list = publ->node_list_next;
-found:
-			ref = publ->ref;
-			*destnode = publ->node;
-			spin_unlock_bh(&seq->lock);
-			read_unlock_bh(&tipc_nametbl_lock);
-			return ref;
-		}
-		publ = sseq->cluster_list;
-		if (publ) {
-			sseq->cluster_list = publ->cluster_list_next;
-			goto found;
-		}
-		publ = sseq->zone_list;
-		if (publ) {
-			sseq->zone_list = publ->zone_list_next;
-			goto found;
+		if (!list_empty(&info->node_list)) {
+			publ = list_first_entry(&info->node_list,
+						struct publication,
+						node_list);
+			list_move_tail(&publ->node_list,
+				       &info->node_list);
+		} else if (!list_empty(&info->cluster_list)) {
+			publ = list_first_entry(&info->cluster_list,
+						struct publication,
+						cluster_list);
+			list_move_tail(&publ->cluster_list,
+				       &info->cluster_list);
+		} else {
+			publ = list_first_entry(&info->zone_list,
+						struct publication,
+						zone_list);
+			list_move_tail(&publ->zone_list,
+				       &info->zone_list);
 		}
 	}
 
 	/* Round-Robin Algorithm: */
 	else if (*destnode == tipc_own_addr) {
-		publ = sseq->node_list;
-		if (publ) {
-			sseq->node_list = publ->node_list_next;
-			goto found;
-		}
+		if (list_empty(&info->node_list))
+			goto no_match;
+		publ = list_first_entry(&info->node_list, struct publication,
+					node_list);
+		list_move_tail(&publ->node_list, &info->node_list);
 	} else if (in_own_cluster(*destnode)) {
-		publ = sseq->cluster_list;
-		if (publ) {
-			sseq->cluster_list = publ->cluster_list_next;
-			goto found;
-		}
+		if (list_empty(&info->cluster_list))
+			goto no_match;
+		publ = list_first_entry(&info->cluster_list, struct publication,
+					cluster_list);
+		list_move_tail(&publ->cluster_list, &info->cluster_list);
 	} else {
-		publ = sseq->zone_list;
-		if (publ) {
-			sseq->zone_list = publ->zone_list_next;
-			goto found;
-		}
+		publ = list_first_entry(&info->zone_list, struct publication,
+					zone_list);
+		list_move_tail(&publ->zone_list, &info->zone_list);
 	}
+
+	ref = publ->ref;
+	*destnode = publ->node;
+no_match:
 	spin_unlock_bh(&seq->lock);
 not_found:
 	read_unlock_bh(&tipc_nametbl_lock);
-	return 0;
+	return ref;
 }
 
 /**
@@ -676,6 +630,7 @@ int tipc_nametbl_mc_translate(u32 type, u32 lower, u32 upper, u32 limit,
 	struct name_seq *seq;
 	struct sub_seq *sseq;
 	struct sub_seq *sseq_stop;
+	struct name_info *info;
 	int res = 0;
 
 	read_lock_bh(&tipc_nametbl_lock);
@@ -693,16 +648,13 @@ int tipc_nametbl_mc_translate(u32 type, u32 lower, u32 upper, u32 limit,
 		if (sseq->lower > upper)
 			break;
 
-		publ = sseq->node_list;
-		if (publ) {
-			do {
-				if (publ->scope <= limit)
-					tipc_port_list_add(dports, publ->ref);
-				publ = publ->node_list_next;
-			} while (publ != sseq->node_list);
+		info = sseq->info;
+		list_for_each_entry(publ, &info->node_list, node_list) {
+			if (publ->scope <= limit)
+				tipc_port_list_add(dports, publ->ref);
 		}
 
-		if (sseq->cluster_list_size != sseq->node_list_size)
+		if (info->cluster_list_size != info->node_list_size)
 			res = 1;
 	}
 
@@ -840,16 +792,19 @@ static void subseq_list(struct sub_seq *sseq, struct print_buf *buf, u32 depth,
 {
 	char portIdStr[27];
 	const char *scope_str[] = {"", " zone", " cluster", " node"};
-	struct publication *publ = sseq->zone_list;
+	struct publication *publ;
+	struct name_info *info;
 
 	tipc_printf(buf, "%-10u %-10u ", sseq->lower, sseq->upper);
 
-	if (depth == 2 || !publ) {
+	if (depth == 2) {
 		tipc_printf(buf, "\n");
 		return;
 	}
 
-	do {
+	info = sseq->info;
+
+	list_for_each_entry(publ, &info->zone_list, zone_list) {
 		sprintf(portIdStr, "<%u.%u.%u:%u>",
 			 tipc_zone(publ->node), tipc_cluster(publ->node),
 			 tipc_node(publ->node), publ->ref);
@@ -858,13 +813,9 @@ static void subseq_list(struct sub_seq *sseq, struct print_buf *buf, u32 depth,
 			tipc_printf(buf, "%-10u %s", publ->key,
 				    scope_str[publ->scope]);
 		}
-
-		publ = publ->zone_list_next;
-		if (publ == sseq->zone_list)
-			break;
-
-		tipc_printf(buf, "\n%33s", " ");
-	} while (1);
+		if (!list_is_last(&publ->zone_list, &info->zone_list))
+			tipc_printf(buf, "\n%33s", " ");
+	};
 
 	tipc_printf(buf, "\n");
 }
diff --git a/net/tipc/name_table.h b/net/tipc/name_table.h
index d228bd682655..62d77e5e902e 100644
--- a/net/tipc/name_table.h
+++ b/net/tipc/name_table.h
@@ -2,7 +2,7 @@
  * net/tipc/name_table.h: Include file for TIPC name table code
  *
  * Copyright (c) 2000-2006, Ericsson AB
- * Copyright (c) 2004-2005, Wind River Systems
+ * Copyright (c) 2004-2005, 2010-2011, Wind River Systems
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -61,9 +61,9 @@ struct port_list;
  * @subscr: subscription to "node down" event (for off-node publications only)
  * @local_list: adjacent entries in list of publications made by this node
  * @pport_list: adjacent entries in list of publications made by this port
- * @node_list: next matching name seq publication with >= node scope
- * @cluster_list: next matching name seq publication with >= cluster scope
- * @zone_list: next matching name seq publication with >= zone scope
+ * @node_list: adjacent matching name seq publications with >= node scope
+ * @cluster_list: adjacent matching name seq publications with >= cluster scope
+ * @zone_list: adjacent matching name seq publications with >= zone scope
  *
  * Note that the node list, cluster list, and zone list are circular lists.
  */
@@ -79,9 +79,9 @@ struct publication {
 	struct tipc_node_subscr subscr;
 	struct list_head local_list;
 	struct list_head pport_list;
-	struct publication *node_list_next;
-	struct publication *cluster_list_next;
-	struct publication *zone_list_next;
+	struct list_head node_list;
+	struct list_head cluster_list;
+	struct list_head zone_list;
 };
 
 
diff --git a/net/tipc/port.c b/net/tipc/port.c
index c68dc956a423..54d812a5a4d9 100644
--- a/net/tipc/port.c
+++ b/net/tipc/port.c
@@ -222,7 +222,7 @@ struct tipc_port *tipc_createport_raw(void *usr_handle,
 	p_ptr->max_pkt = MAX_PKT_DEFAULT;
 	p_ptr->ref = ref;
 	msg = &p_ptr->phdr;
-	tipc_msg_init(msg, importance, TIPC_NAMED_MSG, LONG_H_SIZE, 0);
+	tipc_msg_init(msg, importance, TIPC_NAMED_MSG, NAMED_H_SIZE, 0);
 	msg_set_origport(msg, ref);
 	INIT_LIST_HEAD(&p_ptr->wait_list);
 	INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list);
@@ -327,26 +327,23 @@ int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable)
 }
 
 /*
- * port_build_proto_msg(): build a port level protocol
- * or a connection abortion message. Called with
- * tipc_port lock on.
+ * port_build_proto_msg(): create connection protocol message for port
+ *
+ * On entry the port must be locked and connected.
  */
-static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode,
-					    u32 origport, u32 orignode,
-					    u32 usr, u32 type, u32 err,
-					    u32 ack)
+static struct sk_buff *port_build_proto_msg(struct tipc_port *p_ptr,
+					    u32 type, u32 ack)
 {
 	struct sk_buff *buf;
 	struct tipc_msg *msg;
 
-	buf = tipc_buf_acquire(LONG_H_SIZE);
+	buf = tipc_buf_acquire(INT_H_SIZE);
 	if (buf) {
 		msg = buf_msg(buf);
-		tipc_msg_init(msg, usr, type, LONG_H_SIZE, destnode);
-		msg_set_errcode(msg, err);
-		msg_set_destport(msg, destport);
-		msg_set_origport(msg, origport);
-		msg_set_orignode(msg, orignode);
+		tipc_msg_init(msg, CONN_MANAGER, type, INT_H_SIZE,
+			      port_peernode(p_ptr));
+		msg_set_destport(msg, port_peerport(p_ptr));
+		msg_set_origport(msg, p_ptr->ref);
 		msg_set_msgcnt(msg, ack);
 	}
 	return buf;
@@ -358,45 +355,48 @@ int tipc_reject_msg(struct sk_buff *buf, u32 err)
 	struct sk_buff *rbuf;
 	struct tipc_msg *rmsg;
 	int hdr_sz;
-	u32 imp = msg_importance(msg);
+	u32 imp;
 	u32 data_sz = msg_data_sz(msg);
-
-	if (data_sz > MAX_REJECT_SIZE)
-		data_sz = MAX_REJECT_SIZE;
-	if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE))
-		imp++;
+	u32 src_node;
+	u32 rmsg_sz;
 
 	/* discard rejected message if it shouldn't be returned to sender */
-	if (msg_errcode(msg) || msg_dest_droppable(msg)) {
-		buf_discard(buf);
-		return data_sz;
-	}
 
-	/* construct rejected message */
-	if (msg_mcast(msg))
-		hdr_sz = MCAST_H_SIZE;
-	else
-		hdr_sz = LONG_H_SIZE;
-	rbuf = tipc_buf_acquire(data_sz + hdr_sz);
-	if (rbuf == NULL) {
-		buf_discard(buf);
-		return data_sz;
+	if (WARN(!msg_isdata(msg),
+		 "attempt to reject message with user=%u", msg_user(msg))) {
+		dump_stack();
+		goto exit;
 	}
+	if (msg_errcode(msg) || msg_dest_droppable(msg))
+		goto exit;
+
+	/*
+	 * construct returned message by copying rejected message header and
+	 * data (or subset), then updating header fields that need adjusting
+	 */
+
+	hdr_sz = msg_hdr_sz(msg);
+	rmsg_sz = hdr_sz + min_t(u32, data_sz, MAX_REJECT_SIZE);
+
+	rbuf = tipc_buf_acquire(rmsg_sz);
+	if (rbuf == NULL)
+		goto exit;
+
 	rmsg = buf_msg(rbuf);
-	tipc_msg_init(rmsg, imp, msg_type(msg), hdr_sz, msg_orignode(msg));
-	msg_set_errcode(rmsg, err);
-	msg_set_destport(rmsg, msg_origport(msg));
-	msg_set_origport(rmsg, msg_destport(msg));
-	if (msg_short(msg)) {
-		msg_set_orignode(rmsg, tipc_own_addr);
-		/* leave name type & instance as zeroes */
-	} else {
-		msg_set_orignode(rmsg, msg_destnode(msg));
-		msg_set_nametype(rmsg, msg_nametype(msg));
-		msg_set_nameinst(rmsg, msg_nameinst(msg));
+	skb_copy_to_linear_data(rbuf, msg, rmsg_sz);
+
+	if (msg_connected(rmsg)) {
+		imp = msg_importance(rmsg);
+		if (imp < TIPC_CRITICAL_IMPORTANCE)
+			msg_set_importance(rmsg, ++imp);
 	}
-	msg_set_size(rmsg, data_sz + hdr_sz);
-	skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz);
+	msg_set_non_seq(rmsg, 0);
+	msg_set_size(rmsg, rmsg_sz);
+	msg_set_errcode(rmsg, err);
+	msg_set_prevnode(rmsg, tipc_own_addr);
+	msg_swap_words(rmsg, 4, 5);
+	if (!msg_short(rmsg))
+		msg_swap_words(rmsg, 6, 7);
 
 	/* send self-abort message when rejecting on a connected port */
 	if (msg_connected(msg)) {
@@ -411,9 +411,15 @@ int tipc_reject_msg(struct sk_buff *buf, u32 err)
 		tipc_net_route_msg(abuf);
 	}
 
-	/* send rejected message */
+	/* send returned message & dispose of rejected message */
+
+	src_node = msg_prevnode(msg);
+	if (src_node == tipc_own_addr)
+		tipc_port_recv_msg(rbuf);
+	else
+		tipc_link_send(rbuf, src_node, msg_link_selector(rmsg));
+exit:
 	buf_discard(buf);
-	tipc_net_route_msg(rbuf);
 	return data_sz;
 }
 
@@ -449,14 +455,7 @@ static void port_timeout(unsigned long ref)
 	if (p_ptr->probing_state == PROBING) {
 		buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT);
 	} else {
-		buf = port_build_proto_msg(port_peerport(p_ptr),
-					   port_peernode(p_ptr),
-					   p_ptr->ref,
-					   tipc_own_addr,
-					   CONN_MANAGER,
-					   CONN_PROBE,
-					   TIPC_OK,
-					   0);
+		buf = port_build_proto_msg(p_ptr, CONN_PROBE, 0);
 		p_ptr->probing_state = PROBING;
 		k_start_timer(&p_ptr->timer, p_ptr->probing_interval);
 	}
@@ -480,100 +479,94 @@ static void port_handle_node_down(unsigned long ref)
 
 static struct sk_buff *port_build_self_abort_msg(struct tipc_port *p_ptr, u32 err)
 {
-	u32 imp = msg_importance(&p_ptr->phdr);
+	struct sk_buff *buf = port_build_peer_abort_msg(p_ptr, err);
 
-	if (!p_ptr->connected)
-		return NULL;
-	if (imp < TIPC_CRITICAL_IMPORTANCE)
-		imp++;
-	return port_build_proto_msg(p_ptr->ref,
-				    tipc_own_addr,
-				    port_peerport(p_ptr),
-				    port_peernode(p_ptr),
-				    imp,
-				    TIPC_CONN_MSG,
-				    err,
-				    0);
+	if (buf) {
+		struct tipc_msg *msg = buf_msg(buf);
+		msg_swap_words(msg, 4, 5);
+		msg_swap_words(msg, 6, 7);
+	}
+	return buf;
 }
 
 
 static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err)
 {
-	u32 imp = msg_importance(&p_ptr->phdr);
+	struct sk_buff *buf;
+	struct tipc_msg *msg;
+	u32 imp;
 
 	if (!p_ptr->connected)
 		return NULL;
-	if (imp < TIPC_CRITICAL_IMPORTANCE)
-		imp++;
-	return port_build_proto_msg(port_peerport(p_ptr),
-				    port_peernode(p_ptr),
-				    p_ptr->ref,
-				    tipc_own_addr,
-				    imp,
-				    TIPC_CONN_MSG,
-				    err,
-				    0);
+
+	buf = tipc_buf_acquire(BASIC_H_SIZE);
+	if (buf) {
+		msg = buf_msg(buf);
+		memcpy(msg, &p_ptr->phdr, BASIC_H_SIZE);
+		msg_set_hdr_sz(msg, BASIC_H_SIZE);
+		msg_set_size(msg, BASIC_H_SIZE);
+		imp = msg_importance(msg);
+		if (imp < TIPC_CRITICAL_IMPORTANCE)
+			msg_set_importance(msg, ++imp);
+		msg_set_errcode(msg, err);
+	}
+	return buf;
 }
 
 void tipc_port_recv_proto_msg(struct sk_buff *buf)
 {
 	struct tipc_msg *msg = buf_msg(buf);
-	struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg));
-	u32 err = TIPC_OK;
+	struct tipc_port *p_ptr;
 	struct sk_buff *r_buf = NULL;
-	struct sk_buff *abort_buf = NULL;
-
-	if (!p_ptr) {
-		err = TIPC_ERR_NO_PORT;
-	} else if (p_ptr->connected) {
-		if ((port_peernode(p_ptr) != msg_orignode(msg)) ||
-		    (port_peerport(p_ptr) != msg_origport(msg))) {
-			err = TIPC_ERR_NO_PORT;
-		} else if (msg_type(msg) == CONN_ACK) {
-			int wakeup = tipc_port_congested(p_ptr) &&
-				     p_ptr->congested &&
-				     p_ptr->wakeup;
-			p_ptr->acked += msg_msgcnt(msg);
-			if (tipc_port_congested(p_ptr))
-				goto exit;
-			p_ptr->congested = 0;
-			if (!wakeup)
-				goto exit;
-			p_ptr->wakeup(p_ptr);
-			goto exit;
+	u32 orignode = msg_orignode(msg);
+	u32 origport = msg_origport(msg);
+	u32 destport = msg_destport(msg);
+	int wakeable;
+
+	/* Validate connection */
+
+	p_ptr = tipc_port_lock(destport);
+	if (!p_ptr || !p_ptr->connected ||
+	    (port_peernode(p_ptr) != orignode) ||
+	    (port_peerport(p_ptr) != origport)) {
+		r_buf = tipc_buf_acquire(BASIC_H_SIZE);
+		if (r_buf) {
+			msg = buf_msg(r_buf);
+			tipc_msg_init(msg, TIPC_HIGH_IMPORTANCE, TIPC_CONN_MSG,
+				      BASIC_H_SIZE, orignode);
+			msg_set_errcode(msg, TIPC_ERR_NO_PORT);
+			msg_set_origport(msg, destport);
+			msg_set_destport(msg, origport);
 		}
-	} else if (p_ptr->published) {
-		err = TIPC_ERR_NO_PORT;
-	}
-	if (err) {
-		r_buf = port_build_proto_msg(msg_origport(msg),
-					     msg_orignode(msg),
-					     msg_destport(msg),
-					     tipc_own_addr,
-					     TIPC_HIGH_IMPORTANCE,
-					     TIPC_CONN_MSG,
-					     err,
-					     0);
+		if (p_ptr)
+			tipc_port_unlock(p_ptr);
 		goto exit;
 	}
 
-	/* All is fine */
-	if (msg_type(msg) == CONN_PROBE) {
-		r_buf = port_build_proto_msg(msg_origport(msg),
-					     msg_orignode(msg),
-					     msg_destport(msg),
-					     tipc_own_addr,
-					     CONN_MANAGER,
-					     CONN_PROBE_REPLY,
-					     TIPC_OK,
-					     0);
+	/* Process protocol message sent by peer */
+
+	switch (msg_type(msg)) {
+	case CONN_ACK:
+		wakeable = tipc_port_congested(p_ptr) && p_ptr->congested &&
+			p_ptr->wakeup;
+		p_ptr->acked += msg_msgcnt(msg);
+		if (!tipc_port_congested(p_ptr)) {
+			p_ptr->congested = 0;
+			if (wakeable)
+				p_ptr->wakeup(p_ptr);
+		}
+		break;
+	case CONN_PROBE:
+		r_buf = port_build_proto_msg(p_ptr, CONN_PROBE_REPLY, 0);
+		break;
+	default:
+		/* CONN_PROBE_REPLY or unrecognized - no action required */
+		break;
 	}
 	p_ptr->probing_state = CONFIRMED;
+	tipc_port_unlock(p_ptr);
 exit:
-	if (p_ptr)
-		tipc_port_unlock(p_ptr);
 	tipc_net_route_msg(r_buf);
-	tipc_net_route_msg(abort_buf);
 	buf_discard(buf);
 }
 
@@ -889,14 +882,7 @@ void tipc_acknowledge(u32 ref, u32 ack)
 		return;
 	if (p_ptr->connected) {
 		p_ptr->conn_unacked -= ack;
-		buf = port_build_proto_msg(port_peerport(p_ptr),
-					   port_peernode(p_ptr),
-					   ref,
-					   tipc_own_addr,
-					   CONN_MANAGER,
-					   CONN_ACK,
-					   TIPC_OK,
-					   ack);
+		buf = port_build_proto_msg(p_ptr, CONN_ACK, ack);
 	}
 	tipc_port_unlock(p_ptr);
 	tipc_net_route_msg(buf);
@@ -1140,19 +1126,7 @@ int tipc_shutdown(u32 ref)
 	if (!p_ptr)
 		return -EINVAL;
 
-	if (p_ptr->connected) {
-		u32 imp = msg_importance(&p_ptr->phdr);
-		if (imp < TIPC_CRITICAL_IMPORTANCE)
-			imp++;
-		buf = port_build_proto_msg(port_peerport(p_ptr),
-					   port_peernode(p_ptr),
-					   ref,
-					   tipc_own_addr,
-					   imp,
-					   TIPC_CONN_MSG,
-					   TIPC_CONN_SHUTDOWN,
-					   0);
-	}
+	buf = port_build_peer_abort_msg(p_ptr, TIPC_CONN_SHUTDOWN);
 	tipc_port_unlock(p_ptr);
 	tipc_net_route_msg(buf);
 	return tipc_disconnect(ref);
@@ -1238,7 +1212,7 @@ int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain,
 	msg_set_type(msg, TIPC_NAMED_MSG);
 	msg_set_orignode(msg, tipc_own_addr);
 	msg_set_origport(msg, ref);
-	msg_set_hdr_sz(msg, LONG_H_SIZE);
+	msg_set_hdr_sz(msg, NAMED_H_SIZE);
 	msg_set_nametype(msg, name->type);
 	msg_set_nameinst(msg, name->instance);
 	msg_set_lookup_scope(msg, tipc_addr_scope(domain));
@@ -1291,7 +1265,7 @@ int tipc_send2port(u32 ref, struct tipc_portid const *dest,
 	msg_set_origport(msg, ref);
 	msg_set_destnode(msg, dest->node);
 	msg_set_destport(msg, dest->ref);
-	msg_set_hdr_sz(msg, DIR_MSG_H_SIZE);
+	msg_set_hdr_sz(msg, BASIC_H_SIZE);
 
 	if (dest->node == tipc_own_addr)
 		res =  tipc_port_recv_sections(p_ptr, num_sect, msg_sect,
@@ -1331,13 +1305,13 @@ int tipc_send_buf2port(u32 ref, struct tipc_portid const *dest,
 	msg_set_origport(msg, ref);
 	msg_set_destnode(msg, dest->node);
 	msg_set_destport(msg, dest->ref);
-	msg_set_hdr_sz(msg, DIR_MSG_H_SIZE);
-	msg_set_size(msg, DIR_MSG_H_SIZE + dsz);
-	if (skb_cow(buf, DIR_MSG_H_SIZE))
+	msg_set_hdr_sz(msg, BASIC_H_SIZE);
+	msg_set_size(msg, BASIC_H_SIZE + dsz);
+	if (skb_cow(buf, BASIC_H_SIZE))
 		return -ENOMEM;
 
-	skb_push(buf, DIR_MSG_H_SIZE);
-	skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE);
+	skb_push(buf, BASIC_H_SIZE);
+	skb_copy_to_linear_data(buf, msg, BASIC_H_SIZE);
 
 	if (dest->node == tipc_own_addr)
 		res = tipc_port_recv_msg(buf);
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 338837396642..adb2eff4a102 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -36,9 +36,6 @@
 
 #include <net/sock.h>
 
-#include <linux/tipc.h>
-#include <linux/tipc_config.h>
-
 #include "core.h"
 #include "port.h"