}
/**
- * 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)
projects / profile / ivi / kernel-x86-ivi.git / commitdiff