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-rw-r--r--net/core/dev.c68
1 files changed, 37 insertions, 31 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 0989fea88c44..5d9ec0458998 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5204,6 +5204,7 @@ static inline bool netdev_adjacent_is_neigh_list(struct net_device *dev,
static int __netdev_adjacent_dev_insert(struct net_device *dev,
struct net_device *adj_dev,
+ u16 ref_nr,
struct list_head *dev_list,
void *private, bool master)
{
@@ -5213,7 +5214,7 @@ static int __netdev_adjacent_dev_insert(struct net_device *dev,
adj = __netdev_find_adj(adj_dev, dev_list);
if (adj) {
- adj->ref_nr++;
+ adj->ref_nr += ref_nr;
return 0;
}
@@ -5223,7 +5224,7 @@ static int __netdev_adjacent_dev_insert(struct net_device *dev,
adj->dev = adj_dev;
adj->master = master;
- adj->ref_nr = 1;
+ adj->ref_nr = ref_nr;
adj->private = private;
dev_hold(adj_dev);
@@ -5262,6 +5263,7 @@ free_adj:
static void __netdev_adjacent_dev_remove(struct net_device *dev,
struct net_device *adj_dev,
+ u16 ref_nr,
struct list_head *dev_list)
{
struct netdev_adjacent *adj;
@@ -5274,10 +5276,10 @@ static void __netdev_adjacent_dev_remove(struct net_device *dev,
BUG();
}
- if (adj->ref_nr > 1) {
- pr_debug("%s to %s ref_nr-- = %d\n", dev->name, adj_dev->name,
- adj->ref_nr-1);
- adj->ref_nr--;
+ if (adj->ref_nr > ref_nr) {
+ pr_debug("%s to %s ref_nr-%d = %d\n", dev->name, adj_dev->name,
+ ref_nr, adj->ref_nr-ref_nr);
+ adj->ref_nr -= ref_nr;
return;
}
@@ -5296,21 +5298,22 @@ static void __netdev_adjacent_dev_remove(struct net_device *dev,
static int __netdev_adjacent_dev_link_lists(struct net_device *dev,
struct net_device *upper_dev,
+ u16 ref_nr,
struct list_head *up_list,
struct list_head *down_list,
void *private, bool master)
{
int ret;
- ret = __netdev_adjacent_dev_insert(dev, upper_dev, up_list, private,
- master);
+ ret = __netdev_adjacent_dev_insert(dev, upper_dev, ref_nr, up_list,
+ private, master);
if (ret)
return ret;
- ret = __netdev_adjacent_dev_insert(upper_dev, dev, down_list, private,
- false);
+ ret = __netdev_adjacent_dev_insert(upper_dev, dev, ref_nr, down_list,
+ private, false);
if (ret) {
- __netdev_adjacent_dev_remove(dev, upper_dev, up_list);
+ __netdev_adjacent_dev_remove(dev, upper_dev, ref_nr, up_list);
return ret;
}
@@ -5318,9 +5321,10 @@ static int __netdev_adjacent_dev_link_lists(struct net_device *dev,
}
static int __netdev_adjacent_dev_link(struct net_device *dev,
- struct net_device *upper_dev)
+ struct net_device *upper_dev,
+ u16 ref_nr)
{
- return __netdev_adjacent_dev_link_lists(dev, upper_dev,
+ return __netdev_adjacent_dev_link_lists(dev, upper_dev, ref_nr,
&dev->all_adj_list.upper,
&upper_dev->all_adj_list.lower,
NULL, false);
@@ -5328,17 +5332,19 @@ static int __netdev_adjacent_dev_link(struct net_device *dev,
static void __netdev_adjacent_dev_unlink_lists(struct net_device *dev,
struct net_device *upper_dev,
+ u16 ref_nr,
struct list_head *up_list,
struct list_head *down_list)
{
- __netdev_adjacent_dev_remove(dev, upper_dev, up_list);
- __netdev_adjacent_dev_remove(upper_dev, dev, down_list);
+ __netdev_adjacent_dev_remove(dev, upper_dev, ref_nr, up_list);
+ __netdev_adjacent_dev_remove(upper_dev, dev, ref_nr, down_list);
}
static void __netdev_adjacent_dev_unlink(struct net_device *dev,
- struct net_device *upper_dev)
+ struct net_device *upper_dev,
+ u16 ref_nr)
{
- __netdev_adjacent_dev_unlink_lists(dev, upper_dev,
+ __netdev_adjacent_dev_unlink_lists(dev, upper_dev, ref_nr,
&dev->all_adj_list.upper,
&upper_dev->all_adj_list.lower);
}
@@ -5347,17 +5353,17 @@ static int __netdev_adjacent_dev_link_neighbour(struct net_device *dev,
struct net_device *upper_dev,
void *private, bool master)
{
- int ret = __netdev_adjacent_dev_link(dev, upper_dev);
+ int ret = __netdev_adjacent_dev_link(dev, upper_dev, 1);
if (ret)
return ret;
- ret = __netdev_adjacent_dev_link_lists(dev, upper_dev,
+ ret = __netdev_adjacent_dev_link_lists(dev, upper_dev, 1,
&dev->adj_list.upper,
&upper_dev->adj_list.lower,
private, master);
if (ret) {
- __netdev_adjacent_dev_unlink(dev, upper_dev);
+ __netdev_adjacent_dev_unlink(dev, upper_dev, 1);
return ret;
}
@@ -5367,8 +5373,8 @@ static int __netdev_adjacent_dev_link_neighbour(struct net_device *dev,
static void __netdev_adjacent_dev_unlink_neighbour(struct net_device *dev,
struct net_device *upper_dev)
{
- __netdev_adjacent_dev_unlink(dev, upper_dev);
- __netdev_adjacent_dev_unlink_lists(dev, upper_dev,
+ __netdev_adjacent_dev_unlink(dev, upper_dev, 1);
+ __netdev_adjacent_dev_unlink_lists(dev, upper_dev, 1,
&dev->adj_list.upper,
&upper_dev->adj_list.lower);
}
@@ -5420,7 +5426,7 @@ static int __netdev_upper_dev_link(struct net_device *dev,
list_for_each_entry(j, &upper_dev->all_adj_list.upper, list) {
pr_debug("Interlinking %s with %s, non-neighbour\n",
i->dev->name, j->dev->name);
- ret = __netdev_adjacent_dev_link(i->dev, j->dev);
+ ret = __netdev_adjacent_dev_link(i->dev, j->dev, i->ref_nr);
if (ret)
goto rollback_mesh;
}
@@ -5430,7 +5436,7 @@ static int __netdev_upper_dev_link(struct net_device *dev,
list_for_each_entry(i, &upper_dev->all_adj_list.upper, list) {
pr_debug("linking %s's upper device %s with %s\n",
upper_dev->name, i->dev->name, dev->name);
- ret = __netdev_adjacent_dev_link(dev, i->dev);
+ ret = __netdev_adjacent_dev_link(dev, i->dev, i->ref_nr);
if (ret)
goto rollback_upper_mesh;
}
@@ -5439,7 +5445,7 @@ static int __netdev_upper_dev_link(struct net_device *dev,
list_for_each_entry(i, &dev->all_adj_list.lower, list) {
pr_debug("linking %s's lower device %s with %s\n", dev->name,
i->dev->name, upper_dev->name);
- ret = __netdev_adjacent_dev_link(i->dev, upper_dev);
+ ret = __netdev_adjacent_dev_link(i->dev, upper_dev, i->ref_nr);
if (ret)
goto rollback_lower_mesh;
}
@@ -5453,7 +5459,7 @@ rollback_lower_mesh:
list_for_each_entry(i, &dev->all_adj_list.lower, list) {
if (i == to_i)
break;
- __netdev_adjacent_dev_unlink(i->dev, upper_dev);
+ __netdev_adjacent_dev_unlink(i->dev, upper_dev, i->ref_nr);
}
i = NULL;
@@ -5463,7 +5469,7 @@ rollback_upper_mesh:
list_for_each_entry(i, &upper_dev->all_adj_list.upper, list) {
if (i == to_i)
break;
- __netdev_adjacent_dev_unlink(dev, i->dev);
+ __netdev_adjacent_dev_unlink(dev, i->dev, i->ref_nr);
}
i = j = NULL;
@@ -5475,7 +5481,7 @@ rollback_mesh:
list_for_each_entry(j, &upper_dev->all_adj_list.upper, list) {
if (i == to_i && j == to_j)
break;
- __netdev_adjacent_dev_unlink(i->dev, j->dev);
+ __netdev_adjacent_dev_unlink(i->dev, j->dev, i->ref_nr);
}
if (i == to_i)
break;
@@ -5559,16 +5565,16 @@ void netdev_upper_dev_unlink(struct net_device *dev,
*/
list_for_each_entry(i, &dev->all_adj_list.lower, list)
list_for_each_entry(j, &upper_dev->all_adj_list.upper, list)
- __netdev_adjacent_dev_unlink(i->dev, j->dev);
+ __netdev_adjacent_dev_unlink(i->dev, j->dev, i->ref_nr);
/* remove also the devices itself from lower/upper device
* list
*/
list_for_each_entry(i, &dev->all_adj_list.lower, list)
- __netdev_adjacent_dev_unlink(i->dev, upper_dev);
+ __netdev_adjacent_dev_unlink(i->dev, upper_dev, i->ref_nr);
list_for_each_entry(i, &upper_dev->all_adj_list.upper, list)
- __netdev_adjacent_dev_unlink(dev, i->dev);
+ __netdev_adjacent_dev_unlink(dev, i->dev, i->ref_nr);
call_netdevice_notifiers_info(NETDEV_CHANGEUPPER, dev,
&changeupper_info.info);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-07 08:15:05 +0000