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path: root/net/batman-adv/gateway_client.c
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Diffstat (limited to 'net/batman-adv/gateway_client.c')
-rw-r--r--net/batman-adv/gateway_client.c85
1 files changed, 31 insertions, 54 deletions
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index bb0158620628..e6c8382c79ba 100644
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -27,7 +27,6 @@
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
-#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/netdevice.h>
@@ -153,20 +152,14 @@ batadv_gw_get_best_gw_node(struct batadv_priv *bat_priv)
struct batadv_neigh_node *router;
struct batadv_neigh_ifinfo *router_ifinfo;
struct batadv_gw_node *gw_node, *curr_gw = NULL;
- uint32_t max_gw_factor = 0, tmp_gw_factor = 0;
- uint32_t gw_divisor;
- uint8_t max_tq = 0;
- uint8_t tq_avg;
+ u64 max_gw_factor = 0;
+ u64 tmp_gw_factor = 0;
+ u8 max_tq = 0;
+ u8 tq_avg;
struct batadv_orig_node *orig_node;
- gw_divisor = BATADV_TQ_LOCAL_WINDOW_SIZE * BATADV_TQ_LOCAL_WINDOW_SIZE;
- gw_divisor *= 64;
-
rcu_read_lock();
hlist_for_each_entry_rcu(gw_node, &bat_priv->gw.list, list) {
- if (gw_node->deleted)
- continue;
-
orig_node = gw_node->orig_node;
router = batadv_orig_router_get(orig_node, BATADV_IF_DEFAULT);
if (!router)
@@ -187,7 +180,7 @@ batadv_gw_get_best_gw_node(struct batadv_priv *bat_priv)
tmp_gw_factor = tq_avg * tq_avg;
tmp_gw_factor *= gw_node->bandwidth_down;
tmp_gw_factor *= 100 * 100;
- tmp_gw_factor /= gw_divisor;
+ tmp_gw_factor >>= 18;
if ((tmp_gw_factor > max_gw_factor) ||
((tmp_gw_factor == max_gw_factor) &&
@@ -267,7 +260,8 @@ void batadv_gw_check_client_stop(struct batadv_priv *bat_priv)
void batadv_gw_election(struct batadv_priv *bat_priv)
{
- struct batadv_gw_node *curr_gw = NULL, *next_gw = NULL;
+ struct batadv_gw_node *curr_gw = NULL;
+ struct batadv_gw_node *next_gw = NULL;
struct batadv_neigh_node *router = NULL;
struct batadv_neigh_ifinfo *router_ifinfo = NULL;
char gw_addr[18] = { '\0' };
@@ -351,8 +345,9 @@ void batadv_gw_check_election(struct batadv_priv *bat_priv,
struct batadv_neigh_ifinfo *router_orig_tq = NULL;
struct batadv_neigh_ifinfo *router_gw_tq = NULL;
struct batadv_orig_node *curr_gw_orig;
- struct batadv_neigh_node *router_gw = NULL, *router_orig = NULL;
- uint8_t gw_tq_avg, orig_tq_avg;
+ struct batadv_neigh_node *router_gw = NULL;
+ struct batadv_neigh_node *router_orig = NULL;
+ u8 gw_tq_avg, orig_tq_avg;
curr_gw_orig = batadv_gw_get_selected_orig(bat_priv);
if (!curr_gw_orig)
@@ -439,6 +434,8 @@ static void batadv_gw_node_add(struct batadv_priv *bat_priv,
INIT_HLIST_NODE(&gw_node->list);
gw_node->orig_node = orig_node;
+ gw_node->bandwidth_down = ntohl(gateway->bandwidth_down);
+ gw_node->bandwidth_up = ntohl(gateway->bandwidth_up);
atomic_set(&gw_node->refcount, 1);
spin_lock_bh(&bat_priv->gw.list_lock);
@@ -472,9 +469,6 @@ batadv_gw_node_get(struct batadv_priv *bat_priv,
if (gw_node_tmp->orig_node != orig_node)
continue;
- if (gw_node_tmp->deleted)
- continue;
-
if (!atomic_inc_not_zero(&gw_node_tmp->refcount))
continue;
@@ -524,9 +518,7 @@ void batadv_gw_node_update(struct batadv_priv *bat_priv,
gw_node->bandwidth_down = ntohl(gateway->bandwidth_down);
gw_node->bandwidth_up = ntohl(gateway->bandwidth_up);
- gw_node->deleted = 0;
if (ntohl(gateway->bandwidth_down) == 0) {
- gw_node->deleted = jiffies;
batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
"Gateway %pM removed from gateway list\n",
orig_node->orig);
@@ -534,14 +526,21 @@ void batadv_gw_node_update(struct batadv_priv *bat_priv,
/* Note: We don't need a NULL check here, since curr_gw never
* gets dereferenced.
*/
+ spin_lock_bh(&bat_priv->gw.list_lock);
+ hlist_del_init_rcu(&gw_node->list);
+ spin_unlock_bh(&bat_priv->gw.list_lock);
+
+ batadv_gw_node_free_ref(gw_node);
+
curr_gw = batadv_gw_get_selected_gw_node(bat_priv);
if (gw_node == curr_gw)
batadv_gw_reselect(bat_priv);
+
+ if (curr_gw)
+ batadv_gw_node_free_ref(curr_gw);
}
out:
- if (curr_gw)
- batadv_gw_node_free_ref(curr_gw);
if (gw_node)
batadv_gw_node_free_ref(gw_node);
}
@@ -557,39 +556,18 @@ void batadv_gw_node_delete(struct batadv_priv *bat_priv,
batadv_gw_node_update(bat_priv, orig_node, &gateway);
}
-void batadv_gw_node_purge(struct batadv_priv *bat_priv)
+void batadv_gw_node_free(struct batadv_priv *bat_priv)
{
- struct batadv_gw_node *gw_node, *curr_gw;
+ struct batadv_gw_node *gw_node;
struct hlist_node *node_tmp;
- unsigned long timeout = msecs_to_jiffies(2 * BATADV_PURGE_TIMEOUT);
- int do_reselect = 0;
-
- curr_gw = batadv_gw_get_selected_gw_node(bat_priv);
spin_lock_bh(&bat_priv->gw.list_lock);
-
hlist_for_each_entry_safe(gw_node, node_tmp,
&bat_priv->gw.list, list) {
- if (((!gw_node->deleted) ||
- (time_before(jiffies, gw_node->deleted + timeout))) &&
- atomic_read(&bat_priv->mesh_state) == BATADV_MESH_ACTIVE)
- continue;
-
- if (curr_gw == gw_node)
- do_reselect = 1;
-
- hlist_del_rcu(&gw_node->list);
+ hlist_del_init_rcu(&gw_node->list);
batadv_gw_node_free_ref(gw_node);
}
-
spin_unlock_bh(&bat_priv->gw.list_lock);
-
- /* gw_reselect() needs to acquire the gw_list_lock */
- if (do_reselect)
- batadv_gw_reselect(bat_priv);
-
- if (curr_gw)
- batadv_gw_node_free_ref(curr_gw);
}
/* fails if orig_node has no router */
@@ -653,9 +631,6 @@ int batadv_gw_client_seq_print_text(struct seq_file *seq, void *offset)
rcu_read_lock();
hlist_for_each_entry_rcu(gw_node, &bat_priv->gw.list, list) {
- if (gw_node->deleted)
- continue;
-
/* fails if orig_node has no router */
if (batadv_write_buffer_text(bat_priv, seq, gw_node) < 0)
continue;
@@ -690,7 +665,7 @@ out:
*/
enum batadv_dhcp_recipient
batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len,
- uint8_t *chaddr)
+ u8 *chaddr)
{
enum batadv_dhcp_recipient ret = BATADV_DHCP_NO;
struct ethhdr *ethhdr;
@@ -700,7 +675,7 @@ batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len,
struct vlan_ethhdr *vhdr;
int chaddr_offset;
__be16 proto;
- uint8_t *p;
+ u8 *p;
/* check for ethernet header */
if (!pskb_may_pull(skb, *header_len + ETH_HLEN))
@@ -810,13 +785,15 @@ batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len,
bool batadv_gw_out_of_range(struct batadv_priv *bat_priv,
struct sk_buff *skb)
{
- struct batadv_neigh_node *neigh_curr = NULL, *neigh_old = NULL;
+ struct batadv_neigh_node *neigh_curr = NULL;
+ struct batadv_neigh_node *neigh_old = NULL;
struct batadv_orig_node *orig_dst_node = NULL;
- struct batadv_gw_node *gw_node = NULL, *curr_gw = NULL;
+ struct batadv_gw_node *gw_node = NULL;
+ struct batadv_gw_node *curr_gw = NULL;
struct batadv_neigh_ifinfo *curr_ifinfo, *old_ifinfo;
struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
bool out_of_range = false;
- uint8_t curr_tq_avg;
+ u8 curr_tq_avg;
unsigned short vid;
vid = batadv_get_vid(skb, 0);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.