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Diffstat (limited to 'net')
-rw-r--r--net/core/devlink.c70
1 files changed, 49 insertions, 21 deletions
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 76f459da6e05..d218f57ad8cf 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -92,7 +92,8 @@ static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_
DEVLINK_PORT_FN_STATE_ACTIVE),
};
-static LIST_HEAD(devlink_list);
+static DEFINE_XARRAY_FLAGS(devlinks, XA_FLAGS_ALLOC);
+#define DEVLINK_REGISTERED XA_MARK_1
/* devlink_mutex
*
@@ -123,6 +124,7 @@ static struct devlink *devlink_get_from_attrs(struct net *net,
struct nlattr **attrs)
{
struct devlink *devlink;
+ unsigned long index;
bool found = false;
char *busname;
char *devname;
@@ -135,7 +137,7 @@ static struct devlink *devlink_get_from_attrs(struct net *net,
lockdep_assert_held(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (strcmp(devlink->dev->bus->name, busname) == 0 &&
strcmp(dev_name(devlink->dev), devname) == 0 &&
net_eq(devlink_net(devlink), net)) {
@@ -1087,11 +1089,12 @@ static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
struct devlink_rate *devlink_rate;
struct devlink *devlink;
int start = cb->args[0];
+ unsigned long index;
int idx = 0;
int err = 0;
mutex_lock(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
@@ -1189,11 +1192,12 @@ static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
{
struct devlink *devlink;
int start = cb->args[0];
+ unsigned long index;
int idx = 0;
int err;
mutex_lock(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
@@ -1251,11 +1255,12 @@ static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
struct devlink *devlink;
struct devlink_port *devlink_port;
int start = cb->args[0];
+ unsigned long index;
int idx = 0;
int err;
mutex_lock(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
@@ -1916,11 +1921,12 @@ static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
struct devlink *devlink;
struct devlink_sb *devlink_sb;
int start = cb->args[0];
+ unsigned long index;
int idx = 0;
int err;
mutex_lock(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
@@ -2067,11 +2073,12 @@ static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
struct devlink *devlink;
struct devlink_sb *devlink_sb;
int start = cb->args[0];
+ unsigned long index;
int idx = 0;
int err = 0;
mutex_lock(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
@@ -2287,11 +2294,12 @@ static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
struct devlink *devlink;
struct devlink_sb *devlink_sb;
int start = cb->args[0];
+ unsigned long index;
int idx = 0;
int err = 0;
mutex_lock(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
@@ -2535,11 +2543,12 @@ devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
struct devlink *devlink;
struct devlink_sb *devlink_sb;
int start = cb->args[0];
+ unsigned long index;
int idx = 0;
int err = 0;
mutex_lock(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
@@ -4611,11 +4620,12 @@ static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
struct devlink_param_item *param_item;
struct devlink *devlink;
int start = cb->args[0];
+ unsigned long index;
int idx = 0;
int err = 0;
mutex_lock(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
@@ -4886,11 +4896,12 @@ static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
struct devlink_port *devlink_port;
struct devlink *devlink;
int start = cb->args[0];
+ unsigned long index;
int idx = 0;
int err = 0;
mutex_lock(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
@@ -5462,11 +5473,12 @@ static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
{
struct devlink *devlink;
int start = cb->args[0];
+ unsigned long index;
int idx = 0;
int err = 0;
mutex_lock(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
@@ -5995,11 +6007,12 @@ static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
{
struct devlink *devlink;
int start = cb->args[0];
+ unsigned long index;
int idx = 0;
int err = 0;
mutex_lock(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
@@ -7176,11 +7189,12 @@ devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
struct devlink_port *port;
struct devlink *devlink;
int start = cb->args[0];
+ unsigned long index;
int idx = 0;
int err;
mutex_lock(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
@@ -7210,7 +7224,7 @@ retry_rep:
devlink_put(devlink);
}
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
@@ -7771,11 +7785,12 @@ static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
struct devlink_trap_item *trap_item;
struct devlink *devlink;
int start = cb->args[0];
+ unsigned long index;
int idx = 0;
int err;
mutex_lock(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
@@ -7997,11 +8012,12 @@ static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
u32 portid = NETLINK_CB(cb->skb).portid;
struct devlink *devlink;
int start = cb->args[0];
+ unsigned long index;
int idx = 0;
int err;
mutex_lock(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
@@ -8310,11 +8326,12 @@ static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
u32 portid = NETLINK_CB(cb->skb).portid;
struct devlink *devlink;
int start = cb->args[0];
+ unsigned long index;
int idx = 0;
int err;
mutex_lock(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
@@ -8899,6 +8916,8 @@ struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
struct device *dev)
{
struct devlink *devlink;
+ static u32 last_id;
+ int ret;
WARN_ON(!ops || !dev);
if (!devlink_reload_actions_valid(ops))
@@ -8908,6 +8927,13 @@ struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
if (!devlink)
return NULL;
+ ret = xa_alloc_cyclic(&devlinks, &devlink->index, devlink, xa_limit_31b,
+ &last_id, GFP_KERNEL);
+ if (ret < 0) {
+ kfree(devlink);
+ return NULL;
+ }
+
devlink->dev = dev;
devlink->ops = ops;
xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
@@ -8940,7 +8966,7 @@ EXPORT_SYMBOL_GPL(devlink_alloc_ns);
int devlink_register(struct devlink *devlink)
{
mutex_lock(&devlink_mutex);
- list_add_tail(&devlink->list, &devlink_list);
+ xa_set_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
devlink_notify(devlink, DEVLINK_CMD_NEW);
mutex_unlock(&devlink_mutex);
return 0;
@@ -8961,7 +8987,7 @@ void devlink_unregister(struct devlink *devlink)
WARN_ON(devlink_reload_supported(devlink->ops) &&
devlink->reload_enabled);
devlink_notify(devlink, DEVLINK_CMD_DEL);
- list_del(&devlink->list);
+ xa_clear_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
mutex_unlock(&devlink_mutex);
}
EXPORT_SYMBOL_GPL(devlink_unregister);
@@ -9023,6 +9049,7 @@ void devlink_free(struct devlink *devlink)
WARN_ON(!list_empty(&devlink->port_list));
xa_destroy(&devlink->snapshot_ids);
+ xa_erase(&devlinks, devlink->index);
kfree(devlink);
}
@@ -11497,13 +11524,14 @@ static void __net_exit devlink_pernet_pre_exit(struct net *net)
{
struct devlink *devlink;
u32 actions_performed;
+ unsigned long index;
int err;
/* In case network namespace is getting destroyed, reload
* all devlink instances from this namespace into init_net.
*/
mutex_lock(&devlink_mutex);
- list_for_each_entry(devlink, &devlink_list, list) {
+ xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
if (!devlink_try_get(devlink))
continue;
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