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-rw-r--r--net/batman-adv/vis.c81
1 files changed, 43 insertions, 38 deletions
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c
index c1fafa3b172f..309493d9128a 100644
--- a/net/batman-adv/vis.c
+++ b/net/batman-adv/vis.c
@@ -53,12 +53,12 @@ static void batadv_free_info(struct kref *ref)
static int batadv_vis_info_cmp(const struct hlist_node *node, const void *data2)
{
const struct vis_info *d1, *d2;
- const struct vis_packet *p1, *p2;
+ const struct batadv_vis_packet *p1, *p2;
d1 = container_of(node, struct vis_info, hash_entry);
d2 = data2;
- p1 = (struct vis_packet *)d1->skb_packet->data;
- p2 = (struct vis_packet *)d2->skb_packet->data;
+ p1 = (struct batadv_vis_packet *)d1->skb_packet->data;
+ p2 = (struct batadv_vis_packet *)d2->skb_packet->data;
return batadv_compare_eth(p1->vis_orig, p2->vis_orig);
}
@@ -68,12 +68,12 @@ static int batadv_vis_info_cmp(const struct hlist_node *node, const void *data2)
static uint32_t batadv_vis_info_choose(const void *data, uint32_t size)
{
const struct vis_info *vis_info = data;
- const struct vis_packet *packet;
+ const struct batadv_vis_packet *packet;
const unsigned char *key;
uint32_t hash = 0;
size_t i;
- packet = (struct vis_packet *)vis_info->skb_packet->data;
+ packet = (struct batadv_vis_packet *)vis_info->skb_packet->data;
key = packet->vis_orig;
for (i = 0; i < ETH_ALEN; i++) {
hash += key[i];
@@ -169,7 +169,7 @@ static ssize_t batadv_vis_data_read_entry(struct seq_file *seq,
}
static void batadv_vis_data_insert_interfaces(struct hlist_head *list,
- struct vis_packet *packet,
+ struct batadv_vis_packet *packet,
struct vis_info_entry *entries)
{
int i;
@@ -187,7 +187,7 @@ static void batadv_vis_data_insert_interfaces(struct hlist_head *list,
static void batadv_vis_data_read_entries(struct seq_file *seq,
struct hlist_head *list,
- struct vis_packet *packet,
+ struct batadv_vis_packet *packet,
struct vis_info_entry *entries)
{
int i;
@@ -214,7 +214,7 @@ static void batadv_vis_seq_print_text_bucket(struct seq_file *seq,
{
struct hlist_node *node;
struct vis_info *info;
- struct vis_packet *packet;
+ struct batadv_vis_packet *packet;
uint8_t *entries_pos;
struct vis_info_entry *entries;
struct if_list_entry *entry;
@@ -223,7 +223,7 @@ static void batadv_vis_seq_print_text_bucket(struct seq_file *seq,
HLIST_HEAD(vis_if_list);
hlist_for_each_entry_rcu(info, node, head, hash_entry) {
- packet = (struct vis_packet *)info->skb_packet->data;
+ packet = (struct batadv_vis_packet *)info->skb_packet->data;
entries_pos = (uint8_t *)packet + sizeof(*packet);
entries = (struct vis_info_entry *)entries_pos;
@@ -334,15 +334,17 @@ static int batadv_recv_list_is_in(struct bat_priv *bat_priv,
* is newer than old entries in the hash.
*/
static struct vis_info *batadv_add_packet(struct bat_priv *bat_priv,
- struct vis_packet *vis_packet,
+ struct batadv_vis_packet *vis_packet,
int vis_info_len, int *is_new,
int make_broadcast)
{
struct vis_info *info, *old_info;
- struct vis_packet *search_packet, *old_packet;
+ struct batadv_vis_packet *search_packet, *old_packet;
struct vis_info search_elem;
- struct vis_packet *packet;
+ struct batadv_vis_packet *packet;
+ struct sk_buff *tmp_skb;
int hash_added;
+ size_t len;
*is_new = 0;
/* sanity check */
@@ -353,15 +355,17 @@ static struct vis_info *batadv_add_packet(struct bat_priv *bat_priv,
search_elem.skb_packet = dev_alloc_skb(sizeof(*search_packet));
if (!search_elem.skb_packet)
return NULL;
- search_packet = (struct vis_packet *)skb_put(search_elem.skb_packet,
- sizeof(*search_packet));
+ len = sizeof(*search_packet);
+ tmp_skb = search_elem.skb_packet;
+ search_packet = (struct batadv_vis_packet *)skb_put(tmp_skb, len);
memcpy(search_packet->vis_orig, vis_packet->vis_orig, ETH_ALEN);
old_info = batadv_vis_hash_find(bat_priv, &search_elem);
kfree_skb(search_elem.skb_packet);
if (old_info) {
- old_packet = (struct vis_packet *)old_info->skb_packet->data;
+ tmp_skb = old_info->skb_packet;
+ old_packet = (struct batadv_vis_packet *)tmp_skb->data;
if (!batadv_seq_after(ntohl(vis_packet->seqno),
ntohl(old_packet->seqno))) {
if (old_packet->seqno == vis_packet->seqno) {
@@ -385,22 +389,21 @@ static struct vis_info *batadv_add_packet(struct bat_priv *bat_priv,
if (!info)
return NULL;
- info->skb_packet = dev_alloc_skb(sizeof(*packet) + vis_info_len +
- ETH_HLEN);
+ len = sizeof(*packet) + vis_info_len;
+ info->skb_packet = dev_alloc_skb(len + ETH_HLEN);
if (!info->skb_packet) {
kfree(info);
return NULL;
}
skb_reserve(info->skb_packet, ETH_HLEN);
- packet = (struct vis_packet *)skb_put(info->skb_packet, sizeof(*packet)
- + vis_info_len);
+ packet = (struct batadv_vis_packet *)skb_put(info->skb_packet, len);
kref_init(&info->refcount);
INIT_LIST_HEAD(&info->send_list);
INIT_LIST_HEAD(&info->recv_list);
info->first_seen = jiffies;
info->bat_priv = bat_priv;
- memcpy(packet, vis_packet, sizeof(*packet) + vis_info_len);
+ memcpy(packet, vis_packet, len);
/* initialize and add new packet. */
*is_new = 1;
@@ -430,7 +433,7 @@ static struct vis_info *batadv_add_packet(struct bat_priv *bat_priv,
/* handle the server sync packet, forward if needed. */
void batadv_receive_server_sync_packet(struct bat_priv *bat_priv,
- struct vis_packet *vis_packet,
+ struct batadv_vis_packet *vis_packet,
int vis_info_len)
{
struct vis_info *info;
@@ -456,11 +459,11 @@ end:
/* handle an incoming client update packet and schedule forward if needed. */
void batadv_receive_client_update_packet(struct bat_priv *bat_priv,
- struct vis_packet *vis_packet,
+ struct batadv_vis_packet *vis_packet,
int vis_info_len)
{
struct vis_info *info;
- struct vis_packet *packet;
+ struct batadv_vis_packet *packet;
int is_new;
int vis_server = atomic_read(&bat_priv->vis_mode);
int are_target = 0;
@@ -482,7 +485,7 @@ void batadv_receive_client_update_packet(struct bat_priv *bat_priv,
goto end;
/* note that outdated packets will be dropped at this point. */
- packet = (struct vis_packet *)info->skb_packet->data;
+ packet = (struct batadv_vis_packet *)info->skb_packet->data;
/* send only if we're the target server or ... */
if (are_target && is_new) {
@@ -511,11 +514,11 @@ static int batadv_find_best_vis_server(struct bat_priv *bat_priv,
struct hlist_node *node;
struct hlist_head *head;
struct orig_node *orig_node;
- struct vis_packet *packet;
+ struct batadv_vis_packet *packet;
int best_tq = -1;
uint32_t i;
- packet = (struct vis_packet *)info->skb_packet->data;
+ packet = (struct batadv_vis_packet *)info->skb_packet->data;
for (i = 0; i < hash->size; i++) {
head = &hash->table[i];
@@ -543,10 +546,10 @@ static int batadv_find_best_vis_server(struct bat_priv *bat_priv,
/* Return true if the vis packet is full. */
static bool batadv_vis_packet_full(const struct vis_info *info)
{
- const struct vis_packet *packet;
+ const struct batadv_vis_packet *packet;
size_t num_items;
- packet = (struct vis_packet *)info->skb_packet->data;
+ packet = (struct batadv_vis_packet *)info->skb_packet->data;
num_items = BATADV_MAX_VIS_PACKET_SIZE / sizeof(struct vis_info_entry);
if (num_items < packet->entries + 1)
@@ -565,13 +568,14 @@ static int batadv_generate_vis_packet(struct bat_priv *bat_priv)
struct orig_node *orig_node;
struct neigh_node *router;
struct vis_info *info = bat_priv->my_vis_info;
- struct vis_packet *packet = (struct vis_packet *)info->skb_packet->data;
+ struct batadv_vis_packet *packet;
struct vis_info_entry *entry;
struct tt_common_entry *tt_common_entry;
int best_tq = -1;
uint32_t i;
info->first_seen = jiffies;
+ packet = (struct batadv_vis_packet *)info->skb_packet->data;
packet->vis_type = atomic_read(&bat_priv->vis_mode);
memcpy(packet->target_orig, batadv_broadcast_addr, ETH_ALEN);
@@ -691,14 +695,14 @@ static void batadv_broadcast_vis_packet(struct bat_priv *bat_priv,
struct hlist_node *node;
struct hlist_head *head;
struct orig_node *orig_node;
- struct vis_packet *packet;
+ struct batadv_vis_packet *packet;
struct sk_buff *skb;
struct hard_iface *hard_iface;
uint8_t dstaddr[ETH_ALEN];
uint32_t i;
- packet = (struct vis_packet *)info->skb_packet->data;
+ packet = (struct batadv_vis_packet *)info->skb_packet->data;
/* send to all routers in range. */
for (i = 0; i < hash->size; i++) {
@@ -745,9 +749,9 @@ static void batadv_unicast_vis_packet(struct bat_priv *bat_priv,
struct orig_node *orig_node;
struct neigh_node *router = NULL;
struct sk_buff *skb;
- struct vis_packet *packet;
+ struct batadv_vis_packet *packet;
- packet = (struct vis_packet *)info->skb_packet->data;
+ packet = (struct batadv_vis_packet *)info->skb_packet->data;
orig_node = batadv_orig_hash_find(bat_priv, packet->target_orig);
if (!orig_node)
@@ -773,13 +777,13 @@ static void batadv_send_vis_packet(struct bat_priv *bat_priv,
struct vis_info *info)
{
struct hard_iface *primary_if;
- struct vis_packet *packet;
+ struct batadv_vis_packet *packet;
primary_if = batadv_primary_if_get_selected(bat_priv);
if (!primary_if)
goto out;
- packet = (struct vis_packet *)info->skb_packet->data;
+ packet = (struct batadv_vis_packet *)info->skb_packet->data;
if (packet->header.ttl < 2) {
pr_debug("Error - can't send vis packet: ttl exceeded\n");
goto out;
@@ -838,10 +842,11 @@ static void batadv_send_vis_packets(struct work_struct *work)
*/
int batadv_vis_init(struct bat_priv *bat_priv)
{
- struct vis_packet *packet;
+ struct batadv_vis_packet *packet;
int hash_added;
unsigned int len;
unsigned long first_seen;
+ struct sk_buff *tmp_skb;
if (bat_priv->vis_hash)
return 0;
@@ -864,8 +869,8 @@ int batadv_vis_init(struct bat_priv *bat_priv)
goto free_info;
skb_reserve(bat_priv->my_vis_info->skb_packet, ETH_HLEN);
- packet = (struct vis_packet *)skb_put(bat_priv->my_vis_info->skb_packet,
- sizeof(*packet));
+ tmp_skb = bat_priv->my_vis_info->skb_packet;
+ packet = (struct batadv_vis_packet *)skb_put(tmp_skb, sizeof(*packet));
/* prefill the vis info */
first_seen = jiffies - msecs_to_jiffies(BATADV_VIS_INTERVAL);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.