batman-adv: fix typos in kernel doc & comments

}

/**

 * batadv_dat_entry_free_ref - decrements the dat_entry refcounter and possibly

 * batadv_dat_entry_free_ref - decrement the dat_entry refcounter and possibly

 * free it

 * @dat_entry: the oentry to free

 * @dat_entry: the entry to free

 */

static void batadv_dat_entry_free_ref(struct batadv_dat_entry *dat_entry)

{

}

/**

 * batadv_dat_to_purge - checks whether a dat_entry has to be purged or not

 * batadv_dat_to_purge - check whether a dat_entry has to be purged or not

 * @dat_entry: the entry to check

 *

 * Returns true if the entry has to be purged now, false otherwise

 * Returns true if the entry has to be purged now, false otherwise.

 */

static bool batadv_dat_to_purge(struct batadv_dat_entry *dat_entry)

{

 *	      returns a boolean value: true is the entry has to be deleted,

 *	      false otherwise

 *

 * Loops over each entry in the DAT local storage and delete it if and only if

 * the to_purge function passed as argument returns true

 * Loops over each entry in the DAT local storage and deletes it if and only if

 * the to_purge function passed as argument returns true.

 */

static void __batadv_dat_purge(struct batadv_priv *bat_priv,

			       bool (*to_purge)(struct batadv_dat_entry *))

		spin_lock_bh(list_lock);

		hlist_for_each_entry_safe(dat_entry, node_tmp, head,

					  hash_entry) {

			/* if an helper function has been passed as parameter,

			/* if a helper function has been passed as parameter,

			 * ask it if the entry has to be purged or not

			 */

			if (to_purge && !to_purge(dat_entry))

 * @node: node in the local table

 * @data2: second object to compare the node to

 *

 * Returns 1 if the two entry are the same, 0 otherwise

 * Returns 1 if the two entries are the same, 0 otherwise.

 */

static int batadv_compare_dat(const struct hlist_node *node, const void *data2)

{

 * @skb: ARP packet

 * @hdr_size: size of the possible header before the ARP packet

 *

 * Returns the value of the hw_src field in the ARP packet

 * Returns the value of the hw_src field in the ARP packet.

 */

static uint8_t *batadv_arp_hw_src(struct sk_buff *skb, int hdr_size)

{

 * @skb: ARP packet

 * @hdr_size: size of the possible header before the ARP packet

 *

 * Returns the value of the ip_src field in the ARP packet

 * Returns the value of the ip_src field in the ARP packet.

 */

static __be32 batadv_arp_ip_src(struct sk_buff *skb, int hdr_size)

{

 * @skb: ARP packet

 * @hdr_size: size of the possible header before the ARP packet

 *

 * Returns the value of the hw_dst field in the ARP packet

 * Returns the value of the hw_dst field in the ARP packet.

 */

static uint8_t *batadv_arp_hw_dst(struct sk_buff *skb, int hdr_size)

{

 * @skb: ARP packet

 * @hdr_size: size of the possible header before the ARP packet

 *

 * Returns the value of the ip_dst field in the ARP packet

 * Returns the value of the ip_dst field in the ARP packet.

 */

static __be32 batadv_arp_ip_dst(struct sk_buff *skb, int hdr_size)

{

 * @data: data to hash

 * @size: size of the hash table

 *

 * Returns the selected index in the hash table for the given data

 * Returns the selected index in the hash table for the given data.

 */

static uint32_t batadv_hash_dat(const void *data, uint32_t size)

{

}

/**

 * batadv_dat_entry_hash_find - looks for a given dat_entry in the local hash

 * batadv_dat_entry_hash_find - look for a given dat_entry in the local hash

 * table

 * @bat_priv: the bat priv with all the soft interface information

 * @ip: search key

 *

 * Returns the dat_entry if found, NULL otherwise

 * Returns the dat_entry if found, NULL otherwise.

 */

static struct batadv_dat_entry *

batadv_dat_entry_hash_find(struct batadv_priv *bat_priv, __be32 ip)

	if (hdr_size == 0)

		return;

	/* if the ARP packet is encapsulated in a batman packet, let's print

	 * some debug messages

	 */

	unicast_4addr_packet = (struct batadv_unicast_4addr_packet *)skb->data;

	switch (unicast_4addr_packet->u.header.packet_type) {

 * @candidate: orig_node under evaluation

 * @max_orig_node: last selected candidate

 *

 * Returns true if the node has been elected as next candidate or false othrwise

 * Returns true if the node has been elected as next candidate or false

 * otherwise.

 */

static bool batadv_is_orig_node_eligible(struct batadv_dat_candidate *res,

					 int select, batadv_dat_addr_t tmp_max,

	 */

	cands[select].type = BATADV_DAT_CANDIDATE_NOT_FOUND;

	/* iterate over the originator list and find the node with closest

	/* iterate over the originator list and find the node with the closest

	 * dat_address which has not been selected yet

	 */

	for (i = 0; i < hash->size; i++) {

		rcu_read_lock();

		hlist_for_each_entry_rcu(orig_node, head, hash_entry) {

			/* the dht space is a ring and addresses are unsigned */

			/* the dht space is a ring using unsigned addresses */

			tmp_max = BATADV_DAT_ADDR_MAX - orig_node->dat_addr +

				  ip_key;

}

/**

 * batadv_dat_select_candidates - selects the nodes which the DHT message has to

 * batadv_dat_select_candidates - select the nodes which the DHT message has to

 * be sent to

 * @bat_priv: the bat priv with all the soft interface information

 * @ip_dst: ipv4 to look up in the DHT

 * closest values (from the LEFT, with wrap around if needed) then the hash

 * value of the key. ip_dst is the key.

 *

 * Returns the candidate array of size BATADV_DAT_CANDIDATE_NUM

 * Returns the candidate array of size BATADV_DAT_CANDIDATE_NUM.

 */

static struct batadv_dat_candidate *

batadv_dat_select_candidates(struct batadv_priv *bat_priv, __be32 ip_dst)

 * @ip: the DHT key

 * @packet_subtype: unicast4addr packet subtype to use

 *

 * In this function the skb is copied by means of pskb_copy() and is sent as

 * unicast packet to each of the selected candidates

 * This function copies the skb with pskb_copy() and is sent as unicast packet

 * to each of the selected candidates.

 *

 * Returns true if the packet is sent to at least one candidate, false otherwise

 * Returns true if the packet is sent to at least one candidate, false

 * otherwise.

 */

static bool batadv_dat_send_data(struct batadv_priv *bat_priv,

				 struct sk_buff *skb, __be32 ip,

 * @skb: packet to analyse

 * @hdr_size: size of the possible header before the ARP packet in the skb

 *

 * Returns the ARP type if the skb contains a valid ARP packet, 0 otherwise

 * Returns the ARP type if the skb contains a valid ARP packet, 0 otherwise.

 */

static uint16_t batadv_arp_get_type(struct batadv_priv *bat_priv,

				    struct sk_buff *skb, int hdr_size)

	arphdr = (struct arphdr *)(skb->data + hdr_size + ETH_HLEN);

	/* Check whether the ARP packet carries a valid

	 * IP information

	 */

	/* check whether the ARP packet carries a valid IP information */

	if (arphdr->ar_hrd != htons(ARPHRD_ETHER))

		goto out;

	if (is_zero_ether_addr(hw_src) || is_multicast_ether_addr(hw_src))

		goto out;

	/* we don't care about the destination MAC address in ARP requests */

	/* don't care about the destination MAC address in ARP requests */

	if (arphdr->ar_op != htons(ARPOP_REQUEST)) {

		hw_dst = batadv_arp_hw_dst(skb, hdr_size);

		if (is_zero_ether_addr(hw_dst) ||

 * @skb: packet to check

 *

 * Returns true if the message has been sent to the dht candidates, false

 * otherwise. In case of true the message has to be enqueued to permit the

 * fallback

 * otherwise. In case of a positive return value the message has to be enqueued

 * to permit the fallback.

 */

bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,

					   struct sk_buff *skb)

		batadv_dbg(BATADV_DBG_DAT, bat_priv, "ARP request replied locally\n");

		ret = true;

	} else {

		/* Send the request on the DHT */

		/* Send the request to the DHT */

		ret = batadv_dat_send_data(bat_priv, skb, ip_dst,

					   BATADV_P_DAT_DHT_GET);

	}

 * @skb: packet to check

 * @hdr_size: size of the encapsulation header

 *

 * Returns true if the request has been answered, false otherwise

 * Returns true if the request has been answered, false otherwise.

 */

bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,

					   struct sk_buff *skb, int hdr_size)

	if (!skb_new)

		goto out;

	/* to preserve backwards compatibility, here the node has to answer

	 * using the same packet type it received for the request. This is due

	 * to that if a node is not using the 4addr packet format it may not

	 * support it.

	/* To preserve backwards compatibility, the node has choose the outgoing

	 * format based on the incoming request packet type. The assumption is

	 * that a node not using the 4addr packet format doesn't support it.

	 */

	if (hdr_size == sizeof(struct batadv_unicast_4addr_packet))

		err = batadv_unicast_4addr_send_skb(bat_priv, skb_new,

	batadv_dat_entry_add(bat_priv, ip_dst, hw_dst);

	/* Send the ARP reply to the candidates for both the IP addresses that

	 * the node got within the ARP reply

	 * the node obtained from the ARP reply

	 */

	batadv_dat_send_data(bat_priv, skb, ip_src, BATADV_P_DAT_DHT_PUT);

	batadv_dat_send_data(bat_priv, skb, ip_dst, BATADV_P_DAT_DHT_PUT);

 * DAT storage only

 * @bat_priv: the bat priv with all the soft interface information

 * @skb: packet to check

 * @hdr_size: siaze of the encapsulation header

 * @hdr_size: size of the encapsulation header

 */

bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,

					 struct sk_buff *skb, int hdr_size)

/**

 * batadv_dat_drop_broadcast_packet - check if an ARP request has to be dropped

 * (because the node has already got the reply via DAT) or not

 * (because the node has already obtained the reply via DAT) or not

 * @bat_priv: the bat priv with all the soft interface information

 * @forw_packet: the broadcast packet

 *

 * Returns true if the node can drop the packet, false otherwise

 * Returns true if the node can drop the packet, false otherwise.

 */

bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,

				      struct batadv_forw_packet *forw_packet)