Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-merge

Antonio Quartulli says:

====================
pull request: batman-adv 20160504

In this pull request you have:
- two changes to the MAINTAINERS file where one marks our mailing list
  as moderated and the other adds a missing documentation file
- kernel-doc fixes
- code refactoring and various cleanups
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

MAINTAINERS

@@ -2203,10 +2203,13 @@ BATMAN ADVANCED
 M:	Marek Lindner <mareklindner@neomailbox.ch>
 M:	Simon Wunderlich <sw@simonwunderlich.de>
 M:	Antonio Quartulli <a@unstable.cc>
-L:	b.a.t.m.a.n@lists.open-mesh.org
+L:	b.a.t.m.a.n@lists.open-mesh.org (moderated for non-subscribers)
 W:	https://www.open-mesh.org/
 Q:	https://patchwork.open-mesh.org/project/batman/list/
 S:	Maintained
+F:	Documentation/ABI/testing/sysfs-class-net-batman-adv
+F:	Documentation/ABI/testing/sysfs-class-net-mesh
+F:	Documentation/networking/batman-adv.txt
 F:	net/batman-adv/
 
 BAYCOM/HDLCDRV DRIVERS FOR AX.25

net/batman-adv/bat_iv_ogm.c

@@ -32,6 +32,7 @@
 #include <linux/jiffies.h>
 #include <linux/list.h>
 #include <linux/kref.h>
+#include <linux/lockdep.h>
 #include <linux/netdevice.h>
 #include <linux/pkt_sched.h>
 #include <linux/printk.h>
@@ -175,71 +176,107 @@ static int batadv_iv_ogm_orig_add_if(struct batadv_orig_node *orig_node,
 }
 
 /**
- * batadv_iv_ogm_orig_del_if - change the private structures of the orig_node to
- *  exclude the removed interface
+ * batadv_iv_ogm_drop_bcast_own_entry - drop section of bcast_own
  * @orig_node: the orig_node that has to be changed
  * @max_if_num: the current amount of interfaces
  * @del_if_num: the index of the interface being removed
- *
- * Return: 0 on success, a negative error code otherwise.
  */
-static int batadv_iv_ogm_orig_del_if(struct batadv_orig_node *orig_node,
+static void
+batadv_iv_ogm_drop_bcast_own_entry(struct batadv_orig_node *orig_node,
 				   int max_if_num, int del_if_num)
 {
-	int ret = -ENOMEM;
-	size_t chunk_size, if_offset;
-	void *data_ptr = NULL;
-
-	spin_lock_bh(&orig_node->bat_iv.ogm_cnt_lock);
+	size_t chunk_size;
+	size_t if_offset;
+	void *data_ptr;
 
-	/* last interface was removed */
-	if (max_if_num == 0)
-		goto free_bcast_own;
+	lockdep_assert_held(&orig_node->bat_iv.ogm_cnt_lock);
 
 	chunk_size = sizeof(unsigned long) * BATADV_NUM_WORDS;
 	data_ptr = kmalloc_array(max_if_num, chunk_size, GFP_ATOMIC);
 	if (!data_ptr)
-		goto unlock;
+		/* use old buffer when new one could not be allocated */
+		data_ptr = orig_node->bat_iv.bcast_own;
 
 	/* copy first part */
-	memcpy(data_ptr, orig_node->bat_iv.bcast_own, del_if_num * chunk_size);
+	memmove(data_ptr, orig_node->bat_iv.bcast_own, del_if_num * chunk_size);
 
 	/* copy second part */
 	if_offset = (del_if_num + 1) * chunk_size;
-	memcpy((char *)data_ptr + del_if_num * chunk_size,
+	memmove((char *)data_ptr + del_if_num * chunk_size,
 		(uint8_t *)orig_node->bat_iv.bcast_own + if_offset,
 		(max_if_num - del_if_num) * chunk_size);
 
-free_bcast_own:
+	/* bcast_own was shrunk down in new buffer; free old one */
+	if (orig_node->bat_iv.bcast_own != data_ptr) {
 		kfree(orig_node->bat_iv.bcast_own);
 		orig_node->bat_iv.bcast_own = data_ptr;
+	}
+}
 
-	if (max_if_num == 0)
-		goto free_own_sum;
+/**
+ * batadv_iv_ogm_drop_bcast_own_sum_entry - drop section of bcast_own_sum
+ * @orig_node: the orig_node that has to be changed
+ * @max_if_num: the current amount of interfaces
+ * @del_if_num: the index of the interface being removed
+ */
+static void
+batadv_iv_ogm_drop_bcast_own_sum_entry(struct batadv_orig_node *orig_node,
+				       int max_if_num, int del_if_num)
+{
+	size_t if_offset;
+	void *data_ptr;
+
+	lockdep_assert_held(&orig_node->bat_iv.ogm_cnt_lock);
 
 	data_ptr = kmalloc_array(max_if_num, sizeof(u8), GFP_ATOMIC);
-	if (!data_ptr) {
-		kfree(orig_node->bat_iv.bcast_own);
-		goto unlock;
-	}
+	if (!data_ptr)
+		/* use old buffer when new one could not be allocated */
+		data_ptr = orig_node->bat_iv.bcast_own_sum;
 
-	memcpy(data_ptr, orig_node->bat_iv.bcast_own_sum,
+	memmove(data_ptr, orig_node->bat_iv.bcast_own_sum,
 		del_if_num * sizeof(u8));
 
 	if_offset = (del_if_num + 1) * sizeof(u8);
-	memcpy((char *)data_ptr + del_if_num * sizeof(u8),
+	memmove((char *)data_ptr + del_if_num * sizeof(u8),
 		orig_node->bat_iv.bcast_own_sum + if_offset,
 		(max_if_num - del_if_num) * sizeof(u8));
 
-free_own_sum:
+	/* bcast_own_sum was shrunk down in new buffer; free old one */
+	if (orig_node->bat_iv.bcast_own_sum != data_ptr) {
 		kfree(orig_node->bat_iv.bcast_own_sum);
 		orig_node->bat_iv.bcast_own_sum = data_ptr;
+	}
+}
+
+/**
+ * batadv_iv_ogm_orig_del_if - change the private structures of the orig_node to
+ *  exclude the removed interface
+ * @orig_node: the orig_node that has to be changed
+ * @max_if_num: the current amount of interfaces
+ * @del_if_num: the index of the interface being removed
+ *
+ * Return: 0 on success, a negative error code otherwise.
+ */
+static int batadv_iv_ogm_orig_del_if(struct batadv_orig_node *orig_node,
+				     int max_if_num, int del_if_num)
+{
+	spin_lock_bh(&orig_node->bat_iv.ogm_cnt_lock);
+
+	if (max_if_num == 0) {
+		kfree(orig_node->bat_iv.bcast_own);
+		kfree(orig_node->bat_iv.bcast_own_sum);
+		orig_node->bat_iv.bcast_own = NULL;
+		orig_node->bat_iv.bcast_own_sum = NULL;
+	} else {
+		batadv_iv_ogm_drop_bcast_own_entry(orig_node, max_if_num,
+						   del_if_num);
+		batadv_iv_ogm_drop_bcast_own_sum_entry(orig_node, max_if_num,
+						       del_if_num);
+	}
 
-	ret = 0;
-unlock:
 	spin_unlock_bh(&orig_node->bat_iv.ogm_cnt_lock);
 
-	return ret;
+	return 0;
 }
 
 /**
@@ -1829,9 +1866,8 @@ static void batadv_iv_ogm_orig_print(struct batadv_priv *bat_priv,
 	int batman_count = 0;
 	u32 i;
 
-	seq_printf(seq, "  %-15s %s (%s/%i) %17s [%10s]: %20s ...\n",
-		   "Originator", "last-seen", "#", BATADV_TQ_MAX_VALUE,
-		   "Nexthop", "outgoingIF", "Potential nexthops");
+	seq_puts(seq,
+		 "  Originator      last-seen (#/255)           Nexthop [outgoingIF]:   Potential nexthops ...\n");
 
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
@@ -1911,8 +1947,7 @@ static void batadv_iv_neigh_print(struct batadv_priv *bat_priv,
 	struct batadv_hard_iface *hard_iface;
 	int batman_count = 0;
 
-	seq_printf(seq, "   %10s        %-13s %s\n",
-		   "IF", "Neighbor", "last-seen");
+	seq_puts(seq, "           IF        Neighbor      last-seen\n");
 
 	rcu_read_lock();
 	list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) {

net/batman-adv/bat_v.c

@@ -162,8 +162,8 @@ static void batadv_v_neigh_print(struct batadv_priv *bat_priv,
 	struct batadv_hard_iface *hard_iface;
 	int batman_count = 0;
 
-	seq_printf(seq, "  %-15s %s (%11s) [%10s]\n", "Neighbor",
-		   "last-seen", "throughput", "IF");
+	seq_puts(seq,
+		 "  Neighbor        last-seen ( throughput) [        IF]\n");
 
 	rcu_read_lock();
 	list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) {
@@ -202,9 +202,8 @@ static void batadv_v_orig_print(struct batadv_priv *bat_priv,
 	int batman_count = 0;
 	u32 i;
 
-	seq_printf(seq, "  %-15s %s (%11s) %17s [%10s]: %20s ...\n",
-		   "Originator", "last-seen", "throughput", "Nexthop",
-		   "outgoingIF", "Potential nexthops");
+	seq_puts(seq,
+		 "  Originator      last-seen ( throughput)           Nexthop [outgoingIF]:   Potential nexthops ...\n");
 
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];

net/batman-adv/bat_v_ogm.c

@@ -233,73 +233,6 @@ void batadv_v_ogm_primary_iface_set(struct batadv_hard_iface *primary_iface)
 	ether_addr_copy(ogm_packet->orig, primary_iface->net_dev->dev_addr);
 }
 
-/**
- * batadv_v_ogm_orig_update - update the originator status based on the received
- *  OGM
- * @bat_priv: the bat priv with all the soft interface information
- * @orig_node: the originator to update
- * @neigh_node: the neighbour the OGM has been received from (to update)
- * @ogm2: the received OGM
- * @if_outgoing: the interface where this OGM is going to be forwarded through
- */
-static void
-batadv_v_ogm_orig_update(struct batadv_priv *bat_priv,
-			 struct batadv_orig_node *orig_node,
-			 struct batadv_neigh_node *neigh_node,
-			 const struct batadv_ogm2_packet *ogm2,
-			 struct batadv_hard_iface *if_outgoing)
-{
-	struct batadv_neigh_ifinfo *router_ifinfo = NULL, *neigh_ifinfo = NULL;
-	struct batadv_neigh_node *router = NULL;
-	s32 neigh_seq_diff;
-	u32 neigh_last_seqno;
-	u32 router_last_seqno;
-	u32 router_throughput, neigh_throughput;
-
-	batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
-		   "Searching and updating originator entry of received packet\n");
-
-	/* if this neighbor already is our next hop there is nothing
-	 * to change
-	 */
-	router = batadv_orig_router_get(orig_node, if_outgoing);
-	if (router == neigh_node)
-		goto out;
-
-	/* don't consider neighbours with worse throughput.
-	 * also switch route if this seqno is BATADV_V_MAX_ORIGDIFF newer than
-	 * the last received seqno from our best next hop.
-	 */
-	if (router) {
-		router_ifinfo = batadv_neigh_ifinfo_get(router, if_outgoing);
-		neigh_ifinfo = batadv_neigh_ifinfo_get(neigh_node, if_outgoing);
-
-		/* if these are not allocated, something is wrong. */
-		if (!router_ifinfo || !neigh_ifinfo)
-			goto out;
-
-		neigh_last_seqno = neigh_ifinfo->bat_v.last_seqno;
-		router_last_seqno = router_ifinfo->bat_v.last_seqno;
-		neigh_seq_diff = neigh_last_seqno - router_last_seqno;
-		router_throughput = router_ifinfo->bat_v.throughput;
-		neigh_throughput = neigh_ifinfo->bat_v.throughput;
-
-		if ((neigh_seq_diff < BATADV_OGM_MAX_ORIGDIFF) &&
-		    (router_throughput >= neigh_throughput))
-			goto out;
-	}
-
-	batadv_update_route(bat_priv, orig_node, if_outgoing, neigh_node);
-
-out:
-	if (router_ifinfo)
-		batadv_neigh_ifinfo_put(router_ifinfo);
-	if (neigh_ifinfo)
-		batadv_neigh_ifinfo_put(neigh_ifinfo);
-	if (router)
-		batadv_neigh_node_put(router);
-}
-
 /**
  * batadv_v_forward_penalty - apply a penalty to the throughput metric forwarded
  *  with B.A.T.M.A.N. V OGMs
@@ -347,10 +280,12 @@ static u32 batadv_v_forward_penalty(struct batadv_priv *bat_priv,
 }
 
 /**
- * batadv_v_ogm_forward - forward an OGM to the given outgoing interface
+ * batadv_v_ogm_forward - check conditions and forward an OGM to the given
+ *  outgoing interface
  * @bat_priv: the bat priv with all the soft interface information
  * @ogm_received: previously received OGM to be forwarded
- * @throughput: throughput to announce, may vary per outgoing interface
+ * @orig_node: the originator which has been updated
+ * @neigh_node: the neigh_node through with the OGM has been received
  * @if_incoming: the interface on which this OGM was received on
  * @if_outgoing: the interface to which the OGM has to be forwarded to
  *
@@ -359,28 +294,57 @@ static u32 batadv_v_forward_penalty(struct batadv_priv *bat_priv,
  */
 static void batadv_v_ogm_forward(struct batadv_priv *bat_priv,
 				 const struct batadv_ogm2_packet *ogm_received,
-				 u32 throughput,
+				 struct batadv_orig_node *orig_node,
+				 struct batadv_neigh_node *neigh_node,
 				 struct batadv_hard_iface *if_incoming,
 				 struct batadv_hard_iface *if_outgoing)
 {
+	struct batadv_neigh_ifinfo *neigh_ifinfo = NULL;
+	struct batadv_orig_ifinfo *orig_ifinfo = NULL;
+	struct batadv_neigh_node *router = NULL;
 	struct batadv_ogm2_packet *ogm_forward;
 	unsigned char *skb_buff;
 	struct sk_buff *skb;
 	size_t packet_len;
 	u16 tvlv_len;
 
+	/* only forward for specific interfaces, not for the default one. */
+	if (if_outgoing == BATADV_IF_DEFAULT)
+		goto out;
+
+	orig_ifinfo = batadv_orig_ifinfo_new(orig_node, if_outgoing);
+	if (!orig_ifinfo)
+		goto out;
+
+	/* acquire possibly updated router */
+	router = batadv_orig_router_get(orig_node, if_outgoing);
+
+	/* strict rule: forward packets coming from the best next hop only */
+	if (neigh_node != router)
+		goto out;
+
+	/* don't forward the same seqno twice on one interface */
+	if (orig_ifinfo->last_seqno_forwarded == ntohl(ogm_received->seqno))
+		goto out;
+
+	orig_ifinfo->last_seqno_forwarded = ntohl(ogm_received->seqno);
+
 	if (ogm_received->ttl <= 1) {
 		batadv_dbg(BATADV_DBG_BATMAN, bat_priv, "ttl exceeded\n");
-		return;
+		goto out;
 	}
 
+	neigh_ifinfo = batadv_neigh_ifinfo_get(neigh_node, if_outgoing);
+	if (!neigh_ifinfo)
+		goto out;
+
 	tvlv_len = ntohs(ogm_received->tvlv_len);
 
 	packet_len = BATADV_OGM2_HLEN + tvlv_len;
 	skb = netdev_alloc_skb_ip_align(if_outgoing->net_dev,
 					ETH_HLEN + packet_len);
 	if (!skb)
-		return;
+		goto out;
 
 	skb_reserve(skb, ETH_HLEN);
 	skb_buff = skb_put(skb, packet_len);
@@ -388,15 +352,23 @@ static void batadv_v_ogm_forward(struct batadv_priv *bat_priv,
 
 	/* apply forward penalty */
 	ogm_forward = (struct batadv_ogm2_packet *)skb_buff;
-	ogm_forward->throughput = htonl(throughput);
+	ogm_forward->throughput = htonl(neigh_ifinfo->bat_v.throughput);
 	ogm_forward->ttl--;
 
 	batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
 		   "Forwarding OGM2 packet on %s: throughput %u, ttl %u, received via %s\n",
-		   if_outgoing->net_dev->name, throughput, ogm_forward->ttl,
-		   if_incoming->net_dev->name);
+		   if_outgoing->net_dev->name, ntohl(ogm_forward->throughput),
+		   ogm_forward->ttl, if_incoming->net_dev->name);
 
 	batadv_v_ogm_send_to_if(skb, if_outgoing);
+
+out:
+	if (orig_ifinfo)
+		batadv_orig_ifinfo_put(orig_ifinfo);
+	if (router)
+		batadv_neigh_node_put(router);
+	if (neigh_ifinfo)
+		batadv_neigh_ifinfo_put(neigh_ifinfo);
 }
 
 /**
@@ -493,8 +465,10 @@ static int batadv_v_ogm_metric_update(struct batadv_priv *bat_priv,
  * @neigh_node: the neigh_node through with the OGM has been received
  * @if_incoming: the interface where this packet was received
  * @if_outgoing: the interface for which the packet should be considered
+ *
+ * Return: true if the packet should be forwarded, false otherwise
  */
-static void batadv_v_ogm_route_update(struct batadv_priv *bat_priv,
+static bool batadv_v_ogm_route_update(struct batadv_priv *bat_priv,
 				      const struct ethhdr *ethhdr,
 				      const struct batadv_ogm2_packet *ogm2,
 				      struct batadv_orig_node *orig_node,
@@ -503,14 +477,14 @@ static void batadv_v_ogm_route_update(struct batadv_priv *bat_priv,
 				      struct batadv_hard_iface *if_outgoing)
 {
 	struct batadv_neigh_node *router = NULL;
-	struct batadv_neigh_ifinfo *neigh_ifinfo = NULL;
 	struct batadv_orig_node *orig_neigh_node = NULL;
-	struct batadv_orig_ifinfo *orig_ifinfo = NULL;
 	struct batadv_neigh_node *orig_neigh_router = NULL;
-
-	neigh_ifinfo = batadv_neigh_ifinfo_get(neigh_node, if_outgoing);
-	if (!neigh_ifinfo)
-		goto out;
+	struct batadv_neigh_ifinfo *router_ifinfo = NULL, *neigh_ifinfo = NULL;
+	u32 router_throughput, neigh_throughput;
+	u32 router_last_seqno;
+	u32 neigh_last_seqno;
+	s32 neigh_seq_diff;
+	bool forward = false;
 
 	orig_neigh_node = batadv_v_ogm_orig_get(bat_priv, ethhdr->h_source);
 	if (!orig_neigh_node)
@@ -529,47 +503,57 @@ static void batadv_v_ogm_route_update(struct batadv_priv *bat_priv,
 		goto out;
 	}
 
-	if (router)
-		batadv_neigh_node_put(router);
+	/* Mark the OGM to be considered for forwarding, and update routes
+	 * if needed.
+	 */
+	forward = true;
 
-	/* Update routes, and check if the OGM is from the best next hop */
-	batadv_v_ogm_orig_update(bat_priv, orig_node, neigh_node, ogm2,
-				 if_outgoing);
+	batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
+		   "Searching and updating originator entry of received packet\n");
 
-	orig_ifinfo = batadv_orig_ifinfo_new(orig_node, if_outgoing);
-	if (!orig_ifinfo)
+	/* if this neighbor already is our next hop there is nothing
+	 * to change
+	 */
+	if (router == neigh_node)
 		goto out;
 
-	/* don't forward the same seqno twice on one interface */
-	if (orig_ifinfo->last_seqno_forwarded == ntohl(ogm2->seqno))
+	/* don't consider neighbours with worse throughput.
+	 * also switch route if this seqno is BATADV_V_MAX_ORIGDIFF newer than
+	 * the last received seqno from our best next hop.
+	 */
+	if (router) {
+		router_ifinfo = batadv_neigh_ifinfo_get(router, if_outgoing);
+		neigh_ifinfo = batadv_neigh_ifinfo_get(neigh_node, if_outgoing);
+
+		/* if these are not allocated, something is wrong. */
+		if (!router_ifinfo || !neigh_ifinfo)
 			goto out;
 
-	/* acquire possibly updated router */
-	router = batadv_orig_router_get(orig_node, if_outgoing);
+		neigh_last_seqno = neigh_ifinfo->bat_v.last_seqno;
+		router_last_seqno = router_ifinfo->bat_v.last_seqno;
+		neigh_seq_diff = neigh_last_seqno - router_last_seqno;
+		router_throughput = router_ifinfo->bat_v.throughput;
+		neigh_throughput = neigh_ifinfo->bat_v.throughput;
 
-	/* strict rule: forward packets coming from the best next hop only */
-	if (neigh_node != router)
+		if ((neigh_seq_diff < BATADV_OGM_MAX_ORIGDIFF) &&
+		    (router_throughput >= neigh_throughput))
 			goto out;
-
-	/* only forward for specific interface, not for the default one. */
-	if (if_outgoing != BATADV_IF_DEFAULT) {
-		orig_ifinfo->last_seqno_forwarded = ntohl(ogm2->seqno);
-		batadv_v_ogm_forward(bat_priv, ogm2,
-				     neigh_ifinfo->bat_v.throughput,
-				     if_incoming, if_outgoing);
 	}
 
+	batadv_update_route(bat_priv, orig_node, if_outgoing, neigh_node);
 out:
-	if (orig_ifinfo)
-		batadv_orig_ifinfo_put(orig_ifinfo);
 	if (router)
 		batadv_neigh_node_put(router);
 	if (orig_neigh_router)
 		batadv_neigh_node_put(orig_neigh_router);
 	if (orig_neigh_node)
 		batadv_orig_node_put(orig_neigh_node);
+	if (router_ifinfo)
+		batadv_neigh_ifinfo_put(router_ifinfo);
 	if (neigh_ifinfo)
 		batadv_neigh_ifinfo_put(neigh_ifinfo);
+
+	return forward;
 }
 
 /**
@@ -592,6 +576,7 @@ batadv_v_ogm_process_per_outif(struct batadv_priv *bat_priv,
 			       struct batadv_hard_iface *if_outgoing)
 {
 	int seqno_age;
+	bool forward;
 
 	/* first, update the metric with according sanity checks */
 	seqno_age = batadv_v_ogm_metric_update(bat_priv, ogm2, orig_node,
@@ -610,8 +595,14 @@ batadv_v_ogm_process_per_outif(struct batadv_priv *bat_priv,
 					       ntohs(ogm2->tvlv_len));
 
 	/* if the metric update went through, update routes if needed */
-	batadv_v_ogm_route_update(bat_priv, ethhdr, ogm2, orig_node,
-				  neigh_node, if_incoming, if_outgoing);
+	forward = batadv_v_ogm_route_update(bat_priv, ethhdr, ogm2, orig_node,
+					    neigh_node, if_incoming,
+					    if_outgoing);
+
+	/* if the routes have been processed correctly, check and forward */
+	if (forward)
+		batadv_v_ogm_forward(bat_priv, ogm2, orig_node, neigh_node,
+				     if_incoming, if_outgoing);
 }
 
 /**

net/batman-adv/bridge_loop_avoidance.c

@@ -120,7 +120,7 @@ static int batadv_compare_backbone_gw(const struct hlist_node *node,
 }
 
 /**
- * batadv_compare_backbone_gw - compare address and vid of two claims
+ * batadv_compare_claim - compare address and vid of two claims
  * @node: list node of the first entry to compare
  * @data2: pointer to the second claims
  *
@@ -200,8 +200,8 @@ static void batadv_claim_put(struct batadv_bla_claim *claim)
  *
  * Return: claim if found or NULL otherwise.
  */
-static struct batadv_bla_claim
-*batadv_claim_hash_find(struct batadv_priv *bat_priv,
+static struct batadv_bla_claim *
+batadv_claim_hash_find(struct batadv_priv *bat_priv,
 		       struct batadv_bla_claim *data)
 {
 	struct batadv_hashtable *hash = bat_priv->bla.claim_hash;
@@ -1303,7 +1303,7 @@ static void batadv_bla_periodic_work(struct work_struct *work)
 	struct batadv_hard_iface *primary_if;
 	int i;
 
-	delayed_work = container_of(work, struct delayed_work, work);
+	delayed_work = to_delayed_work(work);
 	priv_bla = container_of(delayed_work, struct batadv_priv_bla, work);
 	bat_priv = container_of(priv_bla, struct batadv_priv, bla);
 	primary_if = batadv_primary_if_get_selected(bat_priv);
@@ -1575,7 +1575,7 @@ int batadv_bla_is_backbone_gw(struct sk_buff *skb,
 }
 
 /**
- * batadv_bla_init - free all bla structures
+ * batadv_bla_free - free all bla structures
  * @bat_priv: the bat priv with all the soft interface information
  *
  * for softinterface free or module unload
@@ -1815,8 +1815,8 @@ int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset)
 		   "Claims announced for the mesh %s (orig %pM, group id %#.4x)\n",
 		   net_dev->name, primary_addr,
 		   ntohs(bat_priv->bla.claim_dest.group));
-	seq_printf(seq, "   %-17s    %-5s    %-17s [o] (%-6s)\n",
-		   "Client", "VID", "Originator", "CRC");
+	seq_puts(seq,
+		 "   Client               VID      Originator        [o] (CRC   )\n");
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
 
@@ -1873,8 +1873,7 @@ int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset)
 		   "Backbones announced for the mesh %s (orig %pM, group id %#.4x)\n",
 		   net_dev->name, primary_addr,
 		   ntohs(bat_priv->bla.claim_dest.group));
-	seq_printf(seq, "   %-17s    %-5s %-9s (%-6s)\n",
-		   "Originator", "VID", "last seen", "CRC");
+	seq_puts(seq, "   Originator           VID   last seen (CRC   )\n");
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
 

net/batman-adv/debugfs.c

@@ -365,14 +365,17 @@ static int batadv_nc_nodes_open(struct inode *inode, struct file *file)
 
 #define BATADV_DEBUGINFO(_name, _mode, _open)		\
 struct batadv_debuginfo batadv_debuginfo_##_name = {	\
-	.attr = { .name = __stringify(_name),		\
-		  .mode = _mode, },			\
-	.fops = { .owner = THIS_MODULE,			\
+	.attr = {					\
+		.name = __stringify(_name),		\
+		.mode = _mode,				\
+	},						\
+	.fops = {					\
+		.owner = THIS_MODULE,			\
 		.open = _open,				\
 		.read	= seq_read,			\
 		.llseek = seq_lseek,			\
 		.release = single_release,		\
-		}					\
+	},						\
 }
 
 /* the following attributes are general and therefore they will be directly

net/batman-adv/distributed-arp-table.c

@@ -152,7 +152,7 @@ static void batadv_dat_purge(struct work_struct *work)
 	struct batadv_priv_dat *priv_dat;
 	struct batadv_priv *bat_priv;
 
-	delayed_work = container_of(work, struct delayed_work, work);
+	delayed_work = to_delayed_work(work);
 	priv_dat = container_of(delayed_work, struct batadv_priv_dat, work);
 	bat_priv = container_of(priv_dat, struct batadv_priv, dat);
 
@@ -720,7 +720,7 @@ void batadv_dat_status_update(struct net_device *net_dev)
 }
 
 /**
- * batadv_gw_tvlv_ogm_handler_v1 - process incoming dat tvlv container
+ * batadv_dat_tvlv_ogm_handler_v1 - process incoming dat tvlv container
  * @bat_priv: the bat priv with all the soft interface information
  * @orig: the orig_node of the ogm
  * @flags: flags indicating the tvlv state (see batadv_tvlv_handler_flags)
@@ -817,8 +817,8 @@ int batadv_dat_cache_seq_print_text(struct seq_file *seq, void *offset)
 		goto out;
 
 	seq_printf(seq, "Distributed ARP Table (%s):\n", net_dev->name);
-	seq_printf(seq, "          %-7s          %-9s %4s %11s\n", "IPv4",
-		   "MAC", "VID", "last-seen");
+	seq_puts(seq,
+		 "          IPv4             MAC        VID   last-seen\n");
 
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];

net/batman-adv/fragmentation.c

@@ -407,8 +407,8 @@ static struct sk_buff *batadv_frag_create(struct sk_buff *skb,
 					  unsigned int mtu)
 {
 	struct sk_buff *skb_fragment;
-	unsigned header_size = sizeof(*frag_head);
-	unsigned fragment_size = mtu - header_size;
+	unsigned int header_size = sizeof(*frag_head);
+	unsigned int fragment_size = mtu - header_size;
 
 	skb_fragment = netdev_alloc_skb(NULL, mtu + ETH_HLEN);
 	if (!skb_fragment)
@@ -444,15 +444,15 @@ bool batadv_frag_send_packet(struct sk_buff *skb,
 	struct batadv_hard_iface *primary_if = NULL;
 	struct batadv_frag_packet frag_header;
 	struct sk_buff *skb_fragment;
-	unsigned mtu = neigh_node->if_incoming->net_dev->mtu;
-	unsigned header_size = sizeof(frag_header);
-	unsigned max_fragment_size, max_packet_size;
+	unsigned int mtu = neigh_node->if_incoming->net_dev->mtu;
+	unsigned int header_size = sizeof(frag_header);
+	unsigned int max_fragment_size, max_packet_size;
 	bool ret = false;
 
 	/* To avoid merge and refragmentation at next-hops we never send
 	 * fragments larger than BATADV_FRAG_MAX_FRAG_SIZE
 	 */
-	mtu = min_t(unsigned, mtu, BATADV_FRAG_MAX_FRAG_SIZE);
+	mtu = min_t(unsigned int, mtu, BATADV_FRAG_MAX_FRAG_SIZE);
 	max_fragment_size = mtu - header_size;
 	max_packet_size = max_fragment_size * BATADV_FRAG_MAX_FRAGMENTS;
 

net/batman-adv/icmp_socket.c

@@ -104,25 +104,21 @@ static int batadv_socket_open(struct inode *inode, struct file *file)
 
 static int batadv_socket_release(struct inode *inode, struct file *file)
 {
-	struct batadv_socket_client *socket_client = file->private_data;
-	struct batadv_socket_packet *socket_packet;
-	struct list_head *list_pos, *list_pos_tmp;
+	struct batadv_socket_client *client = file->private_data;
+	struct batadv_socket_packet *packet, *tmp;
 
-	spin_lock_bh(&socket_client->lock);
+	spin_lock_bh(&client->lock);
 
 	/* for all packets in the queue ... */
-	list_for_each_safe(list_pos, list_pos_tmp, &socket_client->queue_list) {
-		socket_packet = list_entry(list_pos,
-					   struct batadv_socket_packet, list);
-
-		list_del(list_pos);
-		kfree(socket_packet);
+	list_for_each_entry_safe(packet, tmp, &client->queue_list, list) {
+		list_del(&packet->list);
+		kfree(packet);
 	}
 
-	batadv_socket_client_hash[socket_client->index] = NULL;
-	spin_unlock_bh(&socket_client->lock);
+	batadv_socket_client_hash[client->index] = NULL;
+	spin_unlock_bh(&client->lock);
 
-	kfree(socket_client);
+	kfree(client);
 	module_put(THIS_MODULE);
 
 	return 0;
@@ -337,7 +333,7 @@ int batadv_socket_setup(struct batadv_priv *bat_priv)
 }
 
 /**
- * batadv_socket_receive_packet - schedule an icmp packet to be sent to
+ * batadv_socket_add_packet - schedule an icmp packet to be sent to
  *  userspace on an icmp socket.
  * @socket_client: the socket this packet belongs to
  * @icmph: pointer to the header of the icmp packet

net/batman-adv/main.c

@@ -663,8 +663,8 @@ static void batadv_tvlv_handler_put(struct batadv_tvlv_handler *tvlv_handler)
  *
  * Return: tvlv handler if found or NULL otherwise.
  */
-static struct batadv_tvlv_handler
-*batadv_tvlv_handler_get(struct batadv_priv *bat_priv, u8 type, u8 version)
+static struct batadv_tvlv_handler *
+batadv_tvlv_handler_get(struct batadv_priv *bat_priv, u8 type, u8 version)
 {
 	struct batadv_tvlv_handler *tvlv_handler_tmp, *tvlv_handler = NULL;
 
@@ -722,8 +722,8 @@ static void batadv_tvlv_container_put(struct batadv_tvlv_container *tvlv)
  *
  * Return: tvlv container if found or NULL otherwise.
  */
-static struct batadv_tvlv_container
-*batadv_tvlv_container_get(struct batadv_priv *bat_priv, u8 type, u8 version)
+static struct batadv_tvlv_container *
+batadv_tvlv_container_get(struct batadv_priv *bat_priv, u8 type, u8 version)
 {
 	struct batadv_tvlv_container *tvlv_tmp, *tvlv = NULL;
 

net/batman-adv/main.h

@@ -24,7 +24,7 @@
 #define BATADV_DRIVER_DEVICE "batman-adv"
 
 #ifndef BATADV_SOURCE_VERSION
-#define BATADV_SOURCE_VERSION "2016.1"
+#define BATADV_SOURCE_VERSION "2016.2"
 #endif
 
 /* B.A.T.M.A.N. parameters */
@@ -296,7 +296,8 @@ static inline bool batadv_compare_eth(const void *data1, const void *data2)
 }
 
 /**
- * has_timed_out - compares current time (jiffies) and timestamp + timeout
+ * batadv_has_timed_out - compares current time (jiffies) and timestamp +
+ *  timeout
  * @timestamp:		base value to compare with (in jiffies)
  * @timeout:		added to base value before comparing (in milliseconds)
  *

net/batman-adv/multicast.c

@@ -394,7 +394,8 @@ static int batadv_mcast_forw_mode_check(struct batadv_priv *bat_priv,
 }
 
 /**
- * batadv_mcast_want_all_ip_count - count nodes with unspecific mcast interest
+ * batadv_mcast_forw_want_all_ip_count - count nodes with unspecific mcast
+ *  interest
  * @bat_priv: the bat priv with all the soft interface information
  * @ethhdr: ethernet header of a packet
  *
@@ -433,7 +434,7 @@ batadv_mcast_forw_tt_node_get(struct batadv_priv *bat_priv,
 }
 
 /**
- * batadv_mcast_want_forw_ipv4_node_get - get a node with an ipv4 flag
+ * batadv_mcast_forw_ipv4_node_get - get a node with an ipv4 flag
  * @bat_priv: the bat priv with all the soft interface information
  *
  * Return: an orig_node which has the BATADV_MCAST_WANT_ALL_IPV4 flag set and
@@ -460,7 +461,7 @@ batadv_mcast_forw_ipv4_node_get(struct batadv_priv *bat_priv)
 }
 
 /**
- * batadv_mcast_want_forw_ipv6_node_get - get a node with an ipv6 flag
+ * batadv_mcast_forw_ipv6_node_get - get a node with an ipv6 flag
  * @bat_priv: the bat priv with all the soft interface information
  *
  * Return: an orig_node which has the BATADV_MCAST_WANT_ALL_IPV6 flag set
@@ -487,7 +488,7 @@ batadv_mcast_forw_ipv6_node_get(struct batadv_priv *bat_priv)
 }
 
 /**
- * batadv_mcast_want_forw_ip_node_get - get a node with an ipv4/ipv6 flag
+ * batadv_mcast_forw_ip_node_get - get a node with an ipv4/ipv6 flag
  * @bat_priv: the bat priv with all the soft interface information
  * @ethhdr: an ethernet header to determine the protocol family from
  *
@@ -511,7 +512,7 @@ batadv_mcast_forw_ip_node_get(struct batadv_priv *bat_priv,
 }
 
 /**
- * batadv_mcast_want_forw_unsnoop_node_get - get a node with an unsnoopable flag
+ * batadv_mcast_forw_unsnoop_node_get - get a node with an unsnoopable flag
  * @bat_priv: the bat priv with all the soft interface information
  *
  * Return: an orig_node which has the BATADV_MCAST_WANT_ALL_UNSNOOPABLES flag

net/batman-adv/network-coding.c

@@ -714,7 +714,7 @@ static void batadv_nc_worker(struct work_struct *work)
 	struct batadv_priv *bat_priv;
 	unsigned long timeout;
 
-	delayed_work = container_of(work, struct delayed_work, work);
+	delayed_work = to_delayed_work(work);
 	priv_nc = container_of(delayed_work, struct batadv_priv_nc, work);
 	bat_priv = container_of(priv_nc, struct batadv_priv, nc);
 
@@ -793,8 +793,8 @@ static bool batadv_can_nc_with_orig(struct batadv_priv *bat_priv,
  *
  * Return: the nc_node if found, NULL otherwise.
  */
-static struct batadv_nc_node
-*batadv_nc_find_nc_node(struct batadv_orig_node *orig_node,
+static struct batadv_nc_node *
+batadv_nc_find_nc_node(struct batadv_orig_node *orig_node,
 		       struct batadv_orig_node *orig_neigh_node,
 		       bool in_coding)
 {
@@ -835,8 +835,8 @@ static struct batadv_nc_node
  *
  * Return: the nc_node if found or created, NULL in case of an error.
  */
-static struct batadv_nc_node
-*batadv_nc_get_nc_node(struct batadv_priv *bat_priv,
+static struct batadv_nc_node *
+batadv_nc_get_nc_node(struct batadv_priv *bat_priv,
 		      struct batadv_orig_node *orig_node,
 		      struct batadv_orig_node *orig_neigh_node,
 		      bool in_coding)

net/batman-adv/originator.c

@@ -282,7 +282,7 @@ void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node)
 }
 
 /**
- * batadv_orig_node_get_router - router to the originator depending on iface
+ * batadv_orig_router_get - router to the originator depending on iface
  * @orig_node: the orig node for the router
  * @if_outgoing: the interface where the payload packet has been received or
  *  the OGM should be sent to
@@ -1217,7 +1217,7 @@ static void batadv_purge_orig(struct work_struct *work)
 	struct delayed_work *delayed_work;
 	struct batadv_priv *bat_priv;
 
-	delayed_work = container_of(work, struct delayed_work, work);
+	delayed_work = to_delayed_work(work);
 	bat_priv = container_of(delayed_work, struct batadv_priv, orig_work);
 	_batadv_purge_orig(bat_priv);
 	queue_delayed_work(batadv_event_workqueue,

net/batman-adv/packet.h

@@ -501,7 +501,7 @@ struct batadv_coded_packet {
 #pragma pack()
 
 /**
- * struct batadv_unicast_tvlv - generic unicast packet with tvlv payload
+ * struct batadv_unicast_tvlv_packet - generic unicast packet with tvlv payload
  * @packet_type: batman-adv packet type, part of the general header
  * @version: batman-adv protocol version, part of the genereal header
  * @ttl: time to live for this packet, part of the genereal header

net/batman-adv/send.c

@@ -552,7 +552,7 @@ static void batadv_send_outstanding_bcast_packet(struct work_struct *work)
 	struct net_device *soft_iface;
 	struct batadv_priv *bat_priv;
 
-	delayed_work = container_of(work, struct delayed_work, work);
+	delayed_work = to_delayed_work(work);
 	forw_packet = container_of(delayed_work, struct batadv_forw_packet,
 				   delayed_work);
 	soft_iface = forw_packet->if_incoming->soft_iface;
@@ -604,7 +604,7 @@ void batadv_send_outstanding_bat_ogm_packet(struct work_struct *work)
 	struct batadv_forw_packet *forw_packet;
 	struct batadv_priv *bat_priv;
 
-	delayed_work = container_of(work, struct delayed_work, work);
+	delayed_work = to_delayed_work(work);
 	forw_packet = container_of(delayed_work, struct batadv_forw_packet,
 				   delayed_work);
 	bat_priv = netdev_priv(forw_packet->if_incoming->soft_iface);

net/batman-adv/soft-interface.c

@@ -381,6 +381,24 @@ static int batadv_interface_tx(struct sk_buff *skb,
 	return NETDEV_TX_OK;
 }
 
+/**
+ * batadv_interface_rx - receive ethernet frame on local batman-adv interface
+ * @soft_iface: local interface which will receive the ethernet frame
+ * @skb: ethernet frame for @soft_iface
+ * @recv_if: interface on which the batman-adv packet was received
+ * @hdr_size: size of already parsed batman-adv header
+ * @orig_node: originator from which the batman-adv packet was sent
+ *
+ * Sends a ethernet frame to the receive path of the local @soft_iface.
+ * skb->data has still point to the batman-adv header with the size @hdr_size.
+ * The caller has to have parsed this header already and made sure that at least
+ * @hdr_size bytes are still available for pull in @skb.
+ *
+ * The packet may still get dropped. This can happen when the encapsulated
+ * ethernet frame is invalid or contains again an batman-adv packet. Also
+ * unicast packets will be dropped directly when it was sent between two
+ * isolated clients.
+ */
 void batadv_interface_rx(struct net_device *soft_iface,
 			 struct sk_buff *skb, struct batadv_hard_iface *recv_if,
 			 int hdr_size, struct batadv_orig_node *orig_node)
@@ -543,7 +561,7 @@ struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv,
 }
 
 /**
- * batadv_create_vlan - allocate the needed resources for a new vlan
+ * batadv_softif_create_vlan - allocate the needed resources for a new vlan
  * @bat_priv: the bat priv with all the soft interface information
  * @vid: the VLAN identifier
  *

net/batman-adv/translation-table.c

@@ -1010,8 +1010,8 @@ int batadv_tt_local_seq_print_text(struct seq_file *seq, void *offset)
 	seq_printf(seq,
 		   "Locally retrieved addresses (from %s) announced via TT (TTVN: %u):\n",
 		   net_dev->name, (u8)atomic_read(&bat_priv->tt.vn));
-	seq_printf(seq, "       %-13s  %s %-8s %-9s (%-10s)\n", "Client", "VID",
-		   "Flags", "Last seen", "CRC");
+	seq_puts(seq,
+		 "       Client         VID Flags    Last seen (CRC       )\n");
 
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
@@ -1680,9 +1680,8 @@ int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset)
 	seq_printf(seq,
 		   "Globally announced TT entries received via the mesh %s\n",
 		   net_dev->name);
-	seq_printf(seq, "       %-13s  %s  %s       %-15s %s (%-10s) %s\n",
-		   "Client", "VID", "(TTVN)", "Originator", "(Curr TTVN)",
-		   "CRC", "Flags");
+	seq_puts(seq,
+		 "       Client         VID  (TTVN)       Originator      (Curr TTVN) (CRC       ) Flags\n");
 
 	for (i = 0; i < hash->size; i++) {
 		head = &hash->table[i];
@@ -3201,7 +3200,7 @@ static void batadv_tt_purge(struct work_struct *work)
 	struct batadv_priv_tt *priv_tt;
 	struct batadv_priv *bat_priv;
 
-	delayed_work = container_of(work, struct delayed_work, work);
+	delayed_work = to_delayed_work(work);
 	priv_tt = container_of(delayed_work, struct batadv_priv_tt, work);
 	bat_priv = container_of(priv_tt, struct batadv_priv, tt);