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-rw-r--r--net/core/rtnetlink.c2450
1 files changed, 1643 insertions, 807 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 64289bc98887..b1ed55141d8a 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -53,12 +53,17 @@
#include <net/fib_rules.h>
#include <net/rtnetlink.h>
#include <net/net_namespace.h>
+#include <net/netdev_lock.h>
#include <net/devlink.h>
+#if IS_ENABLED(CONFIG_IPV6)
+#include <net/addrconf.h>
+#endif
+#include <linux/dpll.h>
#include "dev.h"
#define RTNL_MAX_TYPE 50
-#define RTNL_SLAVE_MAX_TYPE 40
+#define RTNL_SLAVE_MAX_TYPE 44
struct rtnl_link {
rtnl_doit_func doit;
@@ -76,11 +81,15 @@ void rtnl_lock(void)
}
EXPORT_SYMBOL(rtnl_lock);
+int rtnl_lock_interruptible(void)
+{
+ return mutex_lock_interruptible(&rtnl_mutex);
+}
+
int rtnl_lock_killable(void)
{
return mutex_lock_killable(&rtnl_mutex);
}
-EXPORT_SYMBOL(rtnl_lock_killable);
static struct sk_buff *defer_kfree_skb_list;
void rtnl_kfree_skbs(struct sk_buff *head, struct sk_buff *tail)
@@ -175,6 +184,176 @@ bool lockdep_rtnl_is_held(void)
EXPORT_SYMBOL(lockdep_rtnl_is_held);
#endif /* #ifdef CONFIG_PROVE_LOCKING */
+#ifdef CONFIG_DEBUG_NET_SMALL_RTNL
+void __rtnl_net_lock(struct net *net)
+{
+ ASSERT_RTNL();
+
+ mutex_lock(&net->rtnl_mutex);
+}
+EXPORT_SYMBOL(__rtnl_net_lock);
+
+void __rtnl_net_unlock(struct net *net)
+{
+ ASSERT_RTNL();
+
+ mutex_unlock(&net->rtnl_mutex);
+}
+EXPORT_SYMBOL(__rtnl_net_unlock);
+
+void rtnl_net_lock(struct net *net)
+{
+ rtnl_lock();
+ __rtnl_net_lock(net);
+}
+EXPORT_SYMBOL(rtnl_net_lock);
+
+void rtnl_net_unlock(struct net *net)
+{
+ __rtnl_net_unlock(net);
+ rtnl_unlock();
+}
+EXPORT_SYMBOL(rtnl_net_unlock);
+
+int rtnl_net_trylock(struct net *net)
+{
+ int ret = rtnl_trylock();
+
+ if (ret)
+ __rtnl_net_lock(net);
+
+ return ret;
+}
+EXPORT_SYMBOL(rtnl_net_trylock);
+
+int rtnl_net_lock_killable(struct net *net)
+{
+ int ret = rtnl_lock_killable();
+
+ if (!ret)
+ __rtnl_net_lock(net);
+
+ return ret;
+}
+
+static int rtnl_net_cmp_locks(const struct net *net_a, const struct net *net_b)
+{
+ if (net_eq(net_a, net_b))
+ return 0;
+
+ /* always init_net first */
+ if (net_eq(net_a, &init_net))
+ return -1;
+
+ if (net_eq(net_b, &init_net))
+ return 1;
+
+ /* otherwise lock in ascending order */
+ return net_a < net_b ? -1 : 1;
+}
+
+int rtnl_net_lock_cmp_fn(const struct lockdep_map *a, const struct lockdep_map *b)
+{
+ const struct net *net_a, *net_b;
+
+ net_a = container_of(a, struct net, rtnl_mutex.dep_map);
+ net_b = container_of(b, struct net, rtnl_mutex.dep_map);
+
+ return rtnl_net_cmp_locks(net_a, net_b);
+}
+
+bool rtnl_net_is_locked(struct net *net)
+{
+ return rtnl_is_locked() && mutex_is_locked(&net->rtnl_mutex);
+}
+EXPORT_SYMBOL(rtnl_net_is_locked);
+
+bool lockdep_rtnl_net_is_held(struct net *net)
+{
+ return lockdep_rtnl_is_held() && lockdep_is_held(&net->rtnl_mutex);
+}
+EXPORT_SYMBOL(lockdep_rtnl_net_is_held);
+#else
+static int rtnl_net_cmp_locks(const struct net *net_a, const struct net *net_b)
+{
+ /* No need to swap */
+ return -1;
+}
+#endif
+
+struct rtnl_nets {
+ /* ->newlink() needs to freeze 3 netns at most;
+ * 2 for the new device, 1 for its peer.
+ */
+ struct net *net[3];
+ unsigned char len;
+};
+
+static void rtnl_nets_init(struct rtnl_nets *rtnl_nets)
+{
+ memset(rtnl_nets, 0, sizeof(*rtnl_nets));
+}
+
+static void rtnl_nets_destroy(struct rtnl_nets *rtnl_nets)
+{
+ int i;
+
+ for (i = 0; i < rtnl_nets->len; i++) {
+ put_net(rtnl_nets->net[i]);
+ rtnl_nets->net[i] = NULL;
+ }
+
+ rtnl_nets->len = 0;
+}
+
+/**
+ * rtnl_nets_add - Add netns to be locked before ->newlink().
+ *
+ * @rtnl_nets: rtnl_nets pointer passed to ->get_peer_net().
+ * @net: netns pointer with an extra refcnt held.
+ *
+ * The extra refcnt is released in rtnl_nets_destroy().
+ */
+static void rtnl_nets_add(struct rtnl_nets *rtnl_nets, struct net *net)
+{
+ int i;
+
+ DEBUG_NET_WARN_ON_ONCE(rtnl_nets->len == ARRAY_SIZE(rtnl_nets->net));
+
+ for (i = 0; i < rtnl_nets->len; i++) {
+ switch (rtnl_net_cmp_locks(rtnl_nets->net[i], net)) {
+ case 0:
+ put_net(net);
+ return;
+ case 1:
+ swap(rtnl_nets->net[i], net);
+ }
+ }
+
+ rtnl_nets->net[i] = net;
+ rtnl_nets->len++;
+}
+
+static void rtnl_nets_lock(struct rtnl_nets *rtnl_nets)
+{
+ int i;
+
+ rtnl_lock();
+
+ for (i = 0; i < rtnl_nets->len; i++)
+ __rtnl_net_lock(rtnl_nets->net[i]);
+}
+
+static void rtnl_nets_unlock(struct rtnl_nets *rtnl_nets)
+{
+ int i;
+
+ for (i = 0; i < rtnl_nets->len; i++)
+ __rtnl_net_unlock(rtnl_nets->net[i]);
+
+ rtnl_unlock();
+}
+
static struct rtnl_link __rcu *__rcu *rtnl_msg_handlers[RTNL_FAMILY_MAX + 1];
static inline int rtm_msgindex(int msgtype)
@@ -265,64 +444,13 @@ unlock:
}
/**
- * rtnl_register_module - Register a rtnetlink message type
- *
- * @owner: module registering the hook (THIS_MODULE)
- * @protocol: Protocol family or PF_UNSPEC
- * @msgtype: rtnetlink message type
- * @doit: Function pointer called for each request message
- * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message
- * @flags: rtnl_link_flags to modify behaviour of doit/dumpit functions
- *
- * Like rtnl_register, but for use by removable modules.
- */
-int rtnl_register_module(struct module *owner,
- int protocol, int msgtype,
- rtnl_doit_func doit, rtnl_dumpit_func dumpit,
- unsigned int flags)
-{
- return rtnl_register_internal(owner, protocol, msgtype,
- doit, dumpit, flags);
-}
-EXPORT_SYMBOL_GPL(rtnl_register_module);
-
-/**
- * rtnl_register - Register a rtnetlink message type
- * @protocol: Protocol family or PF_UNSPEC
- * @msgtype: rtnetlink message type
- * @doit: Function pointer called for each request message
- * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message
- * @flags: rtnl_link_flags to modify behaviour of doit/dumpit functions
- *
- * Registers the specified function pointers (at least one of them has
- * to be non-NULL) to be called whenever a request message for the
- * specified protocol family and message type is received.
- *
- * The special protocol family PF_UNSPEC may be used to define fallback
- * function pointers for the case when no entry for the specific protocol
- * family exists.
- */
-void rtnl_register(int protocol, int msgtype,
- rtnl_doit_func doit, rtnl_dumpit_func dumpit,
- unsigned int flags)
-{
- int err;
-
- err = rtnl_register_internal(NULL, protocol, msgtype, doit, dumpit,
- flags);
- if (err)
- pr_err("Unable to register rtnetlink message handler, "
- "protocol = %d, message type = %d\n", protocol, msgtype);
-}
-
-/**
* rtnl_unregister - Unregister a rtnetlink message type
* @protocol: Protocol family or PF_UNSPEC
* @msgtype: rtnetlink message type
*
* Returns 0 on success or a negative error code.
*/
-int rtnl_unregister(int protocol, int msgtype)
+static int rtnl_unregister(int protocol, int msgtype)
{
struct rtnl_link __rcu **tab;
struct rtnl_link *link;
@@ -338,21 +466,19 @@ int rtnl_unregister(int protocol, int msgtype)
return -ENOENT;
}
- link = rtnl_dereference(tab[msgindex]);
- RCU_INIT_POINTER(tab[msgindex], NULL);
+ link = rcu_replace_pointer_rtnl(tab[msgindex], NULL);
rtnl_unlock();
kfree_rcu(link, rcu);
return 0;
}
-EXPORT_SYMBOL_GPL(rtnl_unregister);
/**
* rtnl_unregister_all - Unregister all rtnetlink message type of a protocol
* @protocol : Protocol family or PF_UNSPEC
*
- * Identical to calling rtnl_unregster() for all registered message types
+ * Identical to calling rtnl_unregister() for all registered message types
* of a certain protocol family.
*/
void rtnl_unregister_all(int protocol)
@@ -364,18 +490,13 @@ void rtnl_unregister_all(int protocol)
BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX);
rtnl_lock();
- tab = rtnl_dereference(rtnl_msg_handlers[protocol]);
+ tab = rcu_replace_pointer_rtnl(rtnl_msg_handlers[protocol], NULL);
if (!tab) {
rtnl_unlock();
return;
}
- RCU_INIT_POINTER(rtnl_msg_handlers[protocol], NULL);
for (msgindex = 0; msgindex < RTM_NR_MSGTYPES; msgindex++) {
- link = rtnl_dereference(tab[msgindex]);
- if (!link)
- continue;
-
- RCU_INIT_POINTER(tab[msgindex], NULL);
+ link = rcu_replace_pointer_rtnl(tab[msgindex], NULL);
kfree_rcu(link, rcu);
}
rtnl_unlock();
@@ -386,46 +507,86 @@ void rtnl_unregister_all(int protocol)
}
EXPORT_SYMBOL_GPL(rtnl_unregister_all);
-static LIST_HEAD(link_ops);
-
-static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind)
+/**
+ * __rtnl_register_many - Register rtnetlink message types
+ * @handlers: Array of struct rtnl_msg_handlers
+ * @n: The length of @handlers
+ *
+ * Registers the specified function pointers (at least one of them has
+ * to be non-NULL) to be called whenever a request message for the
+ * specified protocol family and message type is received.
+ *
+ * The special protocol family PF_UNSPEC may be used to define fallback
+ * function pointers for the case when no entry for the specific protocol
+ * family exists.
+ *
+ * When one element of @handlers fails to register,
+ * 1) built-in: panics.
+ * 2) modules : the previous successful registrations are unwinded
+ * and an error is returned.
+ *
+ * Use rtnl_register_many().
+ */
+int __rtnl_register_many(const struct rtnl_msg_handler *handlers, int n)
{
- const struct rtnl_link_ops *ops;
+ const struct rtnl_msg_handler *handler;
+ int i, err;
- list_for_each_entry(ops, &link_ops, list) {
- if (!strcmp(ops->kind, kind))
- return ops;
+ for (i = 0, handler = handlers; i < n; i++, handler++) {
+ err = rtnl_register_internal(handler->owner, handler->protocol,
+ handler->msgtype, handler->doit,
+ handler->dumpit, handler->flags);
+ if (err) {
+ if (!handler->owner)
+ panic("Unable to register rtnetlink message "
+ "handlers, %pS\n", handlers);
+
+ __rtnl_unregister_many(handlers, i);
+ break;
+ }
}
- return NULL;
+
+ return err;
}
+EXPORT_SYMBOL_GPL(__rtnl_register_many);
-/**
- * __rtnl_link_register - Register rtnl_link_ops with rtnetlink.
- * @ops: struct rtnl_link_ops * to register
- *
- * The caller must hold the rtnl_mutex. This function should be used
- * by drivers that create devices during module initialization. It
- * must be called before registering the devices.
- *
- * Returns 0 on success or a negative error code.
- */
-int __rtnl_link_register(struct rtnl_link_ops *ops)
+void __rtnl_unregister_many(const struct rtnl_msg_handler *handlers, int n)
{
- if (rtnl_link_ops_get(ops->kind))
- return -EEXIST;
+ const struct rtnl_msg_handler *handler;
+ int i;
- /* The check for alloc/setup is here because if ops
- * does not have that filled up, it is not possible
- * to use the ops for creating device. So do not
- * fill up dellink as well. That disables rtnl_dellink.
- */
- if ((ops->alloc || ops->setup) && !ops->dellink)
- ops->dellink = unregister_netdevice_queue;
+ for (i = n - 1, handler = handlers + n - 1; i >= 0; i--, handler--)
+ rtnl_unregister(handler->protocol, handler->msgtype);
+}
+EXPORT_SYMBOL_GPL(__rtnl_unregister_many);
- list_add_tail(&ops->list, &link_ops);
- return 0;
+static DEFINE_MUTEX(link_ops_mutex);
+static LIST_HEAD(link_ops);
+
+static struct rtnl_link_ops *rtnl_link_ops_get(const char *kind, int *srcu_index)
+{
+ struct rtnl_link_ops *ops;
+
+ rcu_read_lock();
+
+ list_for_each_entry_rcu(ops, &link_ops, list) {
+ if (!strcmp(ops->kind, kind)) {
+ *srcu_index = srcu_read_lock(&ops->srcu);
+ goto unlock;
+ }
+ }
+
+ ops = NULL;
+unlock:
+ rcu_read_unlock();
+
+ return ops;
+}
+
+static void rtnl_link_ops_put(struct rtnl_link_ops *ops, int srcu_index)
+{
+ srcu_read_unlock(&ops->srcu, srcu_index);
}
-EXPORT_SYMBOL_GPL(__rtnl_link_register);
/**
* rtnl_link_register - Register rtnl_link_ops with rtnetlink.
@@ -435,6 +596,7 @@ EXPORT_SYMBOL_GPL(__rtnl_link_register);
*/
int rtnl_link_register(struct rtnl_link_ops *ops)
{
+ struct rtnl_link_ops *tmp;
int err;
/* Sanity-check max sizes to avoid stack buffer overflow. */
@@ -442,9 +604,31 @@ int rtnl_link_register(struct rtnl_link_ops *ops)
ops->slave_maxtype > RTNL_SLAVE_MAX_TYPE))
return -EINVAL;
- rtnl_lock();
- err = __rtnl_link_register(ops);
- rtnl_unlock();
+ /* The check for alloc/setup is here because if ops
+ * does not have that filled up, it is not possible
+ * to use the ops for creating device. So do not
+ * fill up dellink as well. That disables rtnl_dellink.
+ */
+ if ((ops->alloc || ops->setup) && !ops->dellink)
+ ops->dellink = unregister_netdevice_queue;
+
+ err = init_srcu_struct(&ops->srcu);
+ if (err)
+ return err;
+
+ mutex_lock(&link_ops_mutex);
+
+ list_for_each_entry(tmp, &link_ops, list) {
+ if (!strcmp(ops->kind, tmp->kind)) {
+ err = -EEXIST;
+ goto unlock;
+ }
+ }
+
+ list_add_tail_rcu(&ops->list, &link_ops);
+unlock:
+ mutex_unlock(&link_ops_mutex);
+
return err;
}
EXPORT_SYMBOL_GPL(rtnl_link_register);
@@ -461,48 +645,20 @@ static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops)
unregister_netdevice_many(&list_kill);
}
-/**
- * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
- * @ops: struct rtnl_link_ops * to unregister
- *
- * The caller must hold the rtnl_mutex and guarantee net_namespace_list
- * integrity (hold pernet_ops_rwsem for writing to close the race
- * with setup_net() and cleanup_net()).
- */
-void __rtnl_link_unregister(struct rtnl_link_ops *ops)
-{
- struct net *net;
-
- for_each_net(net) {
- __rtnl_kill_links(net, ops);
- }
- list_del(&ops->list);
-}
-EXPORT_SYMBOL_GPL(__rtnl_link_unregister);
-
/* Return with the rtnl_lock held when there are no network
* devices unregistering in any network namespace.
*/
static void rtnl_lock_unregistering_all(void)
{
- struct net *net;
- bool unregistering;
DEFINE_WAIT_FUNC(wait, woken_wake_function);
add_wait_queue(&netdev_unregistering_wq, &wait);
for (;;) {
- unregistering = false;
rtnl_lock();
/* We held write locked pernet_ops_rwsem, and parallel
* setup_net() and cleanup_net() are not possible.
*/
- for_each_net(net) {
- if (atomic_read(&net->dev_unreg_count) > 0) {
- unregistering = true;
- break;
- }
- }
- if (!unregistering)
+ if (!atomic_read(&dev_unreg_count))
break;
__rtnl_unlock();
@@ -517,10 +673,22 @@ static void rtnl_lock_unregistering_all(void)
*/
void rtnl_link_unregister(struct rtnl_link_ops *ops)
{
+ struct net *net;
+
+ mutex_lock(&link_ops_mutex);
+ list_del_rcu(&ops->list);
+ mutex_unlock(&link_ops_mutex);
+
+ synchronize_srcu(&ops->srcu);
+ cleanup_srcu_struct(&ops->srcu);
+
/* Close the race with setup_net() and cleanup_net() */
down_write(&pernet_ops_rwsem);
rtnl_lock_unregistering_all();
- __rtnl_link_unregister(ops);
+
+ for_each_net(net)
+ __rtnl_kill_links(net, ops);
+
rtnl_unlock();
up_write(&pernet_ops_rwsem);
}
@@ -577,31 +745,51 @@ static size_t rtnl_link_get_size(const struct net_device *dev)
static LIST_HEAD(rtnl_af_ops);
-static const struct rtnl_af_ops *rtnl_af_lookup(const int family)
+static struct rtnl_af_ops *rtnl_af_lookup(const int family, int *srcu_index)
{
- const struct rtnl_af_ops *ops;
+ struct rtnl_af_ops *ops;
ASSERT_RTNL();
- list_for_each_entry(ops, &rtnl_af_ops, list) {
- if (ops->family == family)
- return ops;
+ rcu_read_lock();
+
+ list_for_each_entry_rcu(ops, &rtnl_af_ops, list) {
+ if (ops->family == family) {
+ *srcu_index = srcu_read_lock(&ops->srcu);
+ goto unlock;
+ }
}
- return NULL;
+ ops = NULL;
+unlock:
+ rcu_read_unlock();
+
+ return ops;
+}
+
+static void rtnl_af_put(struct rtnl_af_ops *ops, int srcu_index)
+{
+ srcu_read_unlock(&ops->srcu, srcu_index);
}
/**
* rtnl_af_register - Register rtnl_af_ops with rtnetlink.
* @ops: struct rtnl_af_ops * to register
*
- * Returns 0 on success or a negative error code.
+ * Return: 0 on success or a negative error code.
*/
-void rtnl_af_register(struct rtnl_af_ops *ops)
+int rtnl_af_register(struct rtnl_af_ops *ops)
{
+ int err = init_srcu_struct(&ops->srcu);
+
+ if (err)
+ return err;
+
rtnl_lock();
list_add_tail_rcu(&ops->list, &rtnl_af_ops);
rtnl_unlock();
+
+ return 0;
}
EXPORT_SYMBOL_GPL(rtnl_af_register);
@@ -616,6 +804,8 @@ void rtnl_af_unregister(struct rtnl_af_ops *ops)
rtnl_unlock();
synchronize_rcu();
+ synchronize_srcu(&ops->srcu);
+ cleanup_srcu_struct(&ops->srcu);
}
EXPORT_SYMBOL_GPL(rtnl_af_unregister);
@@ -836,11 +1026,13 @@ int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id,
.rta_error = error,
.rta_id = id,
};
+ unsigned long delta;
if (dst) {
- ci.rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse);
+ delta = jiffies - READ_ONCE(dst->lastuse);
+ ci.rta_lastuse = jiffies_delta_to_clock_t(delta);
ci.rta_used = dst->__use;
- ci.rta_clntref = atomic_read(&dst->__refcnt);
+ ci.rta_clntref = rcuref_read(&dst->__rcuref);
}
if (expires) {
unsigned long clock;
@@ -853,9 +1045,22 @@ int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id,
}
EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo);
+void netif_set_operstate(struct net_device *dev, int newstate)
+{
+ unsigned int old = READ_ONCE(dev->operstate);
+
+ do {
+ if (old == newstate)
+ return;
+ } while (!try_cmpxchg(&dev->operstate, &old, newstate));
+
+ netif_state_change(dev);
+}
+EXPORT_SYMBOL(netif_set_operstate);
+
static void set_operstate(struct net_device *dev, unsigned char transition)
{
- unsigned char operstate = dev->operstate;
+ unsigned char operstate = READ_ONCE(dev->operstate);
switch (transition) {
case IF_OPER_UP:
@@ -877,12 +1082,7 @@ static void set_operstate(struct net_device *dev, unsigned char transition)
break;
}
- if (dev->operstate != operstate) {
- write_lock(&dev_base_lock);
- dev->operstate = operstate;
- write_unlock(&dev_base_lock);
- netdev_state_change(dev);
- }
+ netif_set_operstate(dev, operstate);
}
static unsigned int rtnl_dev_get_flags(const struct net_device *dev)
@@ -958,24 +1158,30 @@ static inline int rtnl_vfinfo_size(const struct net_device *dev,
nla_total_size(sizeof(struct ifla_vf_rate)) +
nla_total_size(sizeof(struct ifla_vf_link_state)) +
nla_total_size(sizeof(struct ifla_vf_rss_query_en)) +
- nla_total_size(0) + /* nest IFLA_VF_STATS */
- /* IFLA_VF_STATS_RX_PACKETS */
- nla_total_size_64bit(sizeof(__u64)) +
- /* IFLA_VF_STATS_TX_PACKETS */
- nla_total_size_64bit(sizeof(__u64)) +
- /* IFLA_VF_STATS_RX_BYTES */
- nla_total_size_64bit(sizeof(__u64)) +
- /* IFLA_VF_STATS_TX_BYTES */
- nla_total_size_64bit(sizeof(__u64)) +
- /* IFLA_VF_STATS_BROADCAST */
- nla_total_size_64bit(sizeof(__u64)) +
- /* IFLA_VF_STATS_MULTICAST */
- nla_total_size_64bit(sizeof(__u64)) +
- /* IFLA_VF_STATS_RX_DROPPED */
- nla_total_size_64bit(sizeof(__u64)) +
- /* IFLA_VF_STATS_TX_DROPPED */
- nla_total_size_64bit(sizeof(__u64)) +
nla_total_size(sizeof(struct ifla_vf_trust)));
+ if (~ext_filter_mask & RTEXT_FILTER_SKIP_STATS) {
+ size += num_vfs *
+ (nla_total_size(0) + /* nest IFLA_VF_STATS */
+ /* IFLA_VF_STATS_RX_PACKETS */
+ nla_total_size_64bit(sizeof(__u64)) +
+ /* IFLA_VF_STATS_TX_PACKETS */
+ nla_total_size_64bit(sizeof(__u64)) +
+ /* IFLA_VF_STATS_RX_BYTES */
+ nla_total_size_64bit(sizeof(__u64)) +
+ /* IFLA_VF_STATS_TX_BYTES */
+ nla_total_size_64bit(sizeof(__u64)) +
+ /* IFLA_VF_STATS_BROADCAST */
+ nla_total_size_64bit(sizeof(__u64)) +
+ /* IFLA_VF_STATS_MULTICAST */
+ nla_total_size_64bit(sizeof(__u64)) +
+ /* IFLA_VF_STATS_RX_DROPPED */
+ nla_total_size_64bit(sizeof(__u64)) +
+ /* IFLA_VF_STATS_TX_DROPPED */
+ nla_total_size_64bit(sizeof(__u64)));
+ }
+ if (dev->netdev_ops->ndo_get_vf_guid)
+ size += num_vfs * 2 *
+ nla_total_size(sizeof(struct ifla_vf_guid));
return size;
} else
return 0;
@@ -1019,22 +1225,25 @@ static size_t rtnl_xdp_size(void)
static size_t rtnl_prop_list_size(const struct net_device *dev)
{
struct netdev_name_node *name_node;
- size_t size;
+ unsigned int cnt = 0;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(name_node, &dev->name_node->list, list)
+ cnt++;
+ rcu_read_unlock();
- if (list_empty(&dev->name_node->list))
+ if (!cnt)
return 0;
- size = nla_total_size(0);
- list_for_each_entry(name_node, &dev->name_node->list, list)
- size += nla_total_size(ALTIFNAMSIZ);
- return size;
+
+ return nla_total_size(0) + cnt * nla_total_size(ALTIFNAMSIZ);
}
static size_t rtnl_proto_down_size(const struct net_device *dev)
{
size_t size = nla_total_size(1);
- if (dev->proto_down_reason)
- size += nla_total_size(0) + nla_total_size(4);
+ /* Assume dev->proto_down_reason is not zero. */
+ size += nla_total_size(0) + nla_total_size(4);
return size;
}
@@ -1049,16 +1258,25 @@ static size_t rtnl_devlink_port_size(const struct net_device *dev)
return size;
}
+static size_t rtnl_dpll_pin_size(const struct net_device *dev)
+{
+ size_t size = nla_total_size(0); /* nest IFLA_DPLL_PIN */
+
+ size += dpll_netdev_pin_handle_size(dev);
+
+ return size;
+}
+
static noinline size_t if_nlmsg_size(const struct net_device *dev,
u32 ext_filter_mask)
{
- return NLMSG_ALIGN(sizeof(struct ifinfomsg))
+ size_t size;
+
+ size = NLMSG_ALIGN(sizeof(struct ifinfomsg))
+ nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
+ nla_total_size(IFALIASZ) /* IFLA_IFALIAS */
+ nla_total_size(IFNAMSIZ) /* IFLA_QDISC */
+ nla_total_size_64bit(sizeof(struct rtnl_link_ifmap))
- + nla_total_size(sizeof(struct rtnl_link_stats))
- + nla_total_size_64bit(sizeof(struct rtnl_link_stats64))
+ nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
+ nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */
+ nla_total_size(4) /* IFLA_TXQLEN */
@@ -1074,10 +1292,13 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev,
+ nla_total_size(4) /* IFLA_GSO_MAX_SEGS */
+ nla_total_size(4) /* IFLA_GSO_MAX_SIZE */
+ nla_total_size(4) /* IFLA_GRO_MAX_SIZE */
+ + nla_total_size(4) /* IFLA_GSO_IPV4_MAX_SIZE */
+ + nla_total_size(4) /* IFLA_GRO_IPV4_MAX_SIZE */
+ nla_total_size(4) /* IFLA_TSO_MAX_SIZE */
+ nla_total_size(4) /* IFLA_TSO_MAX_SEGS */
+ nla_total_size(1) /* IFLA_OPERSTATE */
+ nla_total_size(1) /* IFLA_LINKMODE */
+ + nla_total_size(1) /* IFLA_NETNS_IMMUTABLE */
+ nla_total_size(4) /* IFLA_CARRIER_CHANGES */
+ nla_total_size(4) /* IFLA_LINK_NETNSID */
+ nla_total_size(4) /* IFLA_GROUP */
@@ -1103,7 +1324,17 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev,
+ rtnl_prop_list_size(dev)
+ nla_total_size(MAX_ADDR_LEN) /* IFLA_PERM_ADDRESS */
+ rtnl_devlink_port_size(dev)
+ + rtnl_dpll_pin_size(dev)
+ + nla_total_size(8) /* IFLA_MAX_PACING_OFFLOAD_HORIZON */
+ + nla_total_size(2) /* IFLA_HEADROOM */
+ + nla_total_size(2) /* IFLA_TAILROOM */
+ 0;
+
+ if (!(ext_filter_mask & RTEXT_FILTER_SKIP_STATS))
+ size += nla_total_size(sizeof(struct rtnl_link_stats)) +
+ nla_total_size_64bit(sizeof(struct rtnl_link_stats64));
+
+ return size;
}
static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev)
@@ -1225,7 +1456,7 @@ static int rtnl_phys_switch_id_fill(struct sk_buff *skb, struct net_device *dev)
struct netdev_phys_item_id ppid = { };
int err;
- err = dev_get_port_parent_id(dev, &ppid, false);
+ err = netif_get_port_parent_id(dev, &ppid, false);
if (err) {
if (err == -EOPNOTSUPP)
return 0;
@@ -1265,7 +1496,7 @@ static noinline_for_stack int rtnl_fill_stats(struct sk_buff *skb,
static noinline_for_stack int rtnl_fill_vfinfo(struct sk_buff *skb,
struct net_device *dev,
int vfs_num,
- struct nlattr *vfinfo)
+ u32 ext_filter_mask)
{
struct ifla_vf_rss_query_en vf_rss_query_en;
struct nlattr *vf, *vfstats, *vfvlanlist;
@@ -1334,7 +1565,7 @@ static noinline_for_stack int rtnl_fill_vfinfo(struct sk_buff *skb,
vf_trust.setting = ivi.trusted;
vf = nla_nest_start_noflag(skb, IFLA_VF_INFO);
if (!vf)
- goto nla_put_vfinfo_failure;
+ return -EMSGSIZE;
if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) ||
nla_put(skb, IFLA_VF_BROADCAST, sizeof(vf_broadcast), &vf_broadcast) ||
nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) ||
@@ -1371,40 +1602,40 @@ static noinline_for_stack int rtnl_fill_vfinfo(struct sk_buff *skb,
goto nla_put_vf_failure;
}
nla_nest_end(skb, vfvlanlist);
- memset(&vf_stats, 0, sizeof(vf_stats));
- if (dev->netdev_ops->ndo_get_vf_stats)
- dev->netdev_ops->ndo_get_vf_stats(dev, vfs_num,
- &vf_stats);
- vfstats = nla_nest_start_noflag(skb, IFLA_VF_STATS);
- if (!vfstats)
- goto nla_put_vf_failure;
- if (nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_PACKETS,
- vf_stats.rx_packets, IFLA_VF_STATS_PAD) ||
- nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_PACKETS,
- vf_stats.tx_packets, IFLA_VF_STATS_PAD) ||
- nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_BYTES,
- vf_stats.rx_bytes, IFLA_VF_STATS_PAD) ||
- nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_BYTES,
- vf_stats.tx_bytes, IFLA_VF_STATS_PAD) ||
- nla_put_u64_64bit(skb, IFLA_VF_STATS_BROADCAST,
- vf_stats.broadcast, IFLA_VF_STATS_PAD) ||
- nla_put_u64_64bit(skb, IFLA_VF_STATS_MULTICAST,
- vf_stats.multicast, IFLA_VF_STATS_PAD) ||
- nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_DROPPED,
- vf_stats.rx_dropped, IFLA_VF_STATS_PAD) ||
- nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_DROPPED,
- vf_stats.tx_dropped, IFLA_VF_STATS_PAD)) {
- nla_nest_cancel(skb, vfstats);
- goto nla_put_vf_failure;
+ if (~ext_filter_mask & RTEXT_FILTER_SKIP_STATS) {
+ memset(&vf_stats, 0, sizeof(vf_stats));
+ if (dev->netdev_ops->ndo_get_vf_stats)
+ dev->netdev_ops->ndo_get_vf_stats(dev, vfs_num,
+ &vf_stats);
+ vfstats = nla_nest_start_noflag(skb, IFLA_VF_STATS);
+ if (!vfstats)
+ goto nla_put_vf_failure;
+ if (nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_PACKETS,
+ vf_stats.rx_packets, IFLA_VF_STATS_PAD) ||
+ nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_PACKETS,
+ vf_stats.tx_packets, IFLA_VF_STATS_PAD) ||
+ nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_BYTES,
+ vf_stats.rx_bytes, IFLA_VF_STATS_PAD) ||
+ nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_BYTES,
+ vf_stats.tx_bytes, IFLA_VF_STATS_PAD) ||
+ nla_put_u64_64bit(skb, IFLA_VF_STATS_BROADCAST,
+ vf_stats.broadcast, IFLA_VF_STATS_PAD) ||
+ nla_put_u64_64bit(skb, IFLA_VF_STATS_MULTICAST,
+ vf_stats.multicast, IFLA_VF_STATS_PAD) ||
+ nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_DROPPED,
+ vf_stats.rx_dropped, IFLA_VF_STATS_PAD) ||
+ nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_DROPPED,
+ vf_stats.tx_dropped, IFLA_VF_STATS_PAD)) {
+ nla_nest_cancel(skb, vfstats);
+ goto nla_put_vf_failure;
+ }
+ nla_nest_end(skb, vfstats);
}
- nla_nest_end(skb, vfstats);
nla_nest_end(skb, vf);
return 0;
nla_put_vf_failure:
nla_nest_cancel(skb, vf);
-nla_put_vfinfo_failure:
- nla_nest_cancel(skb, vfinfo);
return -EMSGSIZE;
}
@@ -1430,25 +1661,28 @@ static noinline_for_stack int rtnl_fill_vf(struct sk_buff *skb,
return -EMSGSIZE;
for (i = 0; i < num_vfs; i++) {
- if (rtnl_fill_vfinfo(skb, dev, i, vfinfo))
+ if (rtnl_fill_vfinfo(skb, dev, i, ext_filter_mask)) {
+ nla_nest_cancel(skb, vfinfo);
return -EMSGSIZE;
+ }
}
nla_nest_end(skb, vfinfo);
return 0;
}
-static int rtnl_fill_link_ifmap(struct sk_buff *skb, struct net_device *dev)
+static int rtnl_fill_link_ifmap(struct sk_buff *skb,
+ const struct net_device *dev)
{
struct rtnl_link_ifmap map;
memset(&map, 0, sizeof(map));
- map.mem_start = dev->mem_start;
- map.mem_end = dev->mem_end;
- map.base_addr = dev->base_addr;
- map.irq = dev->irq;
- map.dma = dev->dma;
- map.port = dev->if_port;
+ map.mem_start = READ_ONCE(dev->mem_start);
+ map.mem_end = READ_ONCE(dev->mem_end);
+ map.base_addr = READ_ONCE(dev->base_addr);
+ map.irq = READ_ONCE(dev->irq);
+ map.dma = READ_ONCE(dev->dma);
+ map.port = READ_ONCE(dev->if_port);
if (nla_put_64bit(skb, IFLA_MAP, sizeof(map), &map, IFLA_PAD))
return -EMSGSIZE;
@@ -1459,13 +1693,15 @@ static int rtnl_fill_link_ifmap(struct sk_buff *skb, struct net_device *dev)
static u32 rtnl_xdp_prog_skb(struct net_device *dev)
{
const struct bpf_prog *generic_xdp_prog;
+ u32 res = 0;
- ASSERT_RTNL();
+ rcu_read_lock();
+ generic_xdp_prog = rcu_dereference(dev->xdp_prog);
+ if (generic_xdp_prog)
+ res = generic_xdp_prog->aux->id;
+ rcu_read_unlock();
- generic_xdp_prog = rtnl_dereference(dev->xdp_prog);
- if (!generic_xdp_prog)
- return 0;
- return generic_xdp_prog->aux->id;
+ return res;
}
static u32 rtnl_xdp_prog_drv(struct net_device *dev)
@@ -1585,7 +1821,8 @@ static int put_master_ifindex(struct sk_buff *skb, struct net_device *dev)
upper_dev = netdev_master_upper_dev_get_rcu(dev);
if (upper_dev)
- ret = nla_put_u32(skb, IFLA_MASTER, upper_dev->ifindex);
+ ret = nla_put_u32(skb, IFLA_MASTER,
+ READ_ONCE(upper_dev->ifindex));
rcu_read_unlock();
return ret;
@@ -1594,10 +1831,10 @@ static int put_master_ifindex(struct sk_buff *skb, struct net_device *dev)
static int nla_put_iflink(struct sk_buff *skb, const struct net_device *dev,
bool force)
{
- int ifindex = dev_get_iflink(dev);
+ int iflink = dev_get_iflink(dev);
- if (force || dev->ifindex != ifindex)
- return nla_put_u32(skb, IFLA_LINK, ifindex);
+ if (force || READ_ONCE(dev->ifindex) != iflink)
+ return nla_put_u32(skb, IFLA_LINK, iflink);
return 0;
}
@@ -1681,7 +1918,7 @@ static int rtnl_fill_alt_ifnames(struct sk_buff *skb,
struct netdev_name_node *name_node;
int count = 0;
- list_for_each_entry(name_node, &dev->name_node->list, list) {
+ list_for_each_entry_rcu(name_node, &dev->name_node->list, list) {
if (nla_put_string(skb, IFLA_ALT_IFNAME, name_node->name))
return -EMSGSIZE;
count++;
@@ -1689,6 +1926,7 @@ static int rtnl_fill_alt_ifnames(struct sk_buff *skb,
return count;
}
+/* RCU protected. */
static int rtnl_fill_prop_list(struct sk_buff *skb,
const struct net_device *dev)
{
@@ -1717,10 +1955,10 @@ static int rtnl_fill_proto_down(struct sk_buff *skb,
struct nlattr *pr;
u32 preason;
- if (nla_put_u8(skb, IFLA_PROTO_DOWN, dev->proto_down))
+ if (nla_put_u8(skb, IFLA_PROTO_DOWN, READ_ONCE(dev->proto_down)))
goto nla_put_failure;
- preason = dev->proto_down_reason;
+ preason = READ_ONCE(dev->proto_down_reason);
if (!preason)
return 0;
@@ -1764,6 +2002,28 @@ nest_cancel:
return ret;
}
+static int rtnl_fill_dpll_pin(struct sk_buff *skb,
+ const struct net_device *dev)
+{
+ struct nlattr *dpll_pin_nest;
+ int ret;
+
+ dpll_pin_nest = nla_nest_start(skb, IFLA_DPLL_PIN);
+ if (!dpll_pin_nest)
+ return -EMSGSIZE;
+
+ ret = dpll_netdev_add_pin_handle(skb, dev);
+ if (ret < 0)
+ goto nest_cancel;
+
+ nla_nest_end(skb, dpll_pin_nest);
+ return 0;
+
+nest_cancel:
+ nla_nest_cancel(skb, dpll_pin_nest);
+ return ret;
+}
+
static int rtnl_fill_ifinfo(struct sk_buff *skb,
struct net_device *dev, struct net *src_net,
int type, u32 pid, u32 seq, u32 change,
@@ -1771,6 +2031,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb,
u32 event, int *new_nsid, int new_ifindex,
int tgt_netnsid, gfp_t gfp)
{
+ char devname[IFNAMSIZ];
struct ifinfomsg *ifm;
struct nlmsghdr *nlh;
struct Qdisc *qdisc;
@@ -1783,39 +2044,54 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb,
ifm = nlmsg_data(nlh);
ifm->ifi_family = AF_UNSPEC;
ifm->__ifi_pad = 0;
- ifm->ifi_type = dev->type;
- ifm->ifi_index = dev->ifindex;
- ifm->ifi_flags = dev_get_flags(dev);
+ ifm->ifi_type = READ_ONCE(dev->type);
+ ifm->ifi_index = READ_ONCE(dev->ifindex);
+ ifm->ifi_flags = netif_get_flags(dev);
ifm->ifi_change = change;
if (tgt_netnsid >= 0 && nla_put_s32(skb, IFLA_TARGET_NETNSID, tgt_netnsid))
goto nla_put_failure;
- qdisc = rtnl_dereference(dev->qdisc);
- if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
- nla_put_u32(skb, IFLA_TXQLEN, dev->tx_queue_len) ||
+ netdev_copy_name(dev, devname);
+ if (nla_put_string(skb, IFLA_IFNAME, devname))
+ goto nla_put_failure;
+
+ if (nla_put_u32(skb, IFLA_TXQLEN, READ_ONCE(dev->tx_queue_len)) ||
nla_put_u8(skb, IFLA_OPERSTATE,
- netif_running(dev) ? dev->operstate : IF_OPER_DOWN) ||
- nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) ||
- nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
- nla_put_u32(skb, IFLA_MIN_MTU, dev->min_mtu) ||
- nla_put_u32(skb, IFLA_MAX_MTU, dev->max_mtu) ||
- nla_put_u32(skb, IFLA_GROUP, dev->group) ||
- nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) ||
- nla_put_u32(skb, IFLA_ALLMULTI, dev->allmulti) ||
- nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) ||
- nla_put_u32(skb, IFLA_GSO_MAX_SEGS, dev->gso_max_segs) ||
- nla_put_u32(skb, IFLA_GSO_MAX_SIZE, dev->gso_max_size) ||
- nla_put_u32(skb, IFLA_GRO_MAX_SIZE, dev->gro_max_size) ||
- nla_put_u32(skb, IFLA_TSO_MAX_SIZE, dev->tso_max_size) ||
- nla_put_u32(skb, IFLA_TSO_MAX_SEGS, dev->tso_max_segs) ||
+ netif_running(dev) ? READ_ONCE(dev->operstate) :
+ IF_OPER_DOWN) ||
+ nla_put_u8(skb, IFLA_LINKMODE, READ_ONCE(dev->link_mode)) ||
+ nla_put_u8(skb, IFLA_NETNS_IMMUTABLE, dev->netns_immutable) ||
+ nla_put_u32(skb, IFLA_MTU, READ_ONCE(dev->mtu)) ||
+ nla_put_u32(skb, IFLA_MIN_MTU, READ_ONCE(dev->min_mtu)) ||
+ nla_put_u32(skb, IFLA_MAX_MTU, READ_ONCE(dev->max_mtu)) ||
+ nla_put_u32(skb, IFLA_GROUP, READ_ONCE(dev->group)) ||
+ nla_put_u32(skb, IFLA_PROMISCUITY, READ_ONCE(dev->promiscuity)) ||
+ nla_put_u32(skb, IFLA_ALLMULTI, READ_ONCE(dev->allmulti)) ||
+ nla_put_u32(skb, IFLA_NUM_TX_QUEUES,
+ READ_ONCE(dev->num_tx_queues)) ||
+ nla_put_u32(skb, IFLA_GSO_MAX_SEGS,
+ READ_ONCE(dev->gso_max_segs)) ||
+ nla_put_u32(skb, IFLA_GSO_MAX_SIZE,
+ READ_ONCE(dev->gso_max_size)) ||
+ nla_put_u32(skb, IFLA_GRO_MAX_SIZE,
+ READ_ONCE(dev->gro_max_size)) ||
+ nla_put_u32(skb, IFLA_GSO_IPV4_MAX_SIZE,
+ READ_ONCE(dev->gso_ipv4_max_size)) ||
+ nla_put_u32(skb, IFLA_GRO_IPV4_MAX_SIZE,
+ READ_ONCE(dev->gro_ipv4_max_size)) ||
+ nla_put_u32(skb, IFLA_TSO_MAX_SIZE,
+ READ_ONCE(dev->tso_max_size)) ||
+ nla_put_u32(skb, IFLA_TSO_MAX_SEGS,
+ READ_ONCE(dev->tso_max_segs)) ||
+ nla_put_uint(skb, IFLA_MAX_PACING_OFFLOAD_HORIZON,
+ READ_ONCE(dev->max_pacing_offload_horizon)) ||
#ifdef CONFIG_RPS
- nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) ||
+ nla_put_u32(skb, IFLA_NUM_RX_QUEUES,
+ READ_ONCE(dev->num_rx_queues)) ||
#endif
put_master_ifindex(skb, dev) ||
nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) ||
- (qdisc &&
- nla_put_string(skb, IFLA_QDISC, qdisc->ops->id)) ||
nla_put_ifalias(skb, dev) ||
nla_put_u32(skb, IFLA_CARRIER_CHANGES,
atomic_read(&dev->carrier_up_count) +
@@ -1823,7 +2099,11 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb,
nla_put_u32(skb, IFLA_CARRIER_UP_COUNT,
atomic_read(&dev->carrier_up_count)) ||
nla_put_u32(skb, IFLA_CARRIER_DOWN_COUNT,
- atomic_read(&dev->carrier_down_count)))
+ atomic_read(&dev->carrier_down_count)) ||
+ nla_put_u16(skb, IFLA_HEADROOM,
+ READ_ONCE(dev->needed_headroom)) ||
+ nla_put_u16(skb, IFLA_TAILROOM,
+ READ_ONCE(dev->needed_tailroom)))
goto nla_put_failure;
if (rtnl_fill_proto_down(skb, dev))
@@ -1834,9 +2114,6 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb,
goto nla_put_failure;
}
- if (rtnl_fill_link_ifmap(skb, dev))
- goto nla_put_failure;
-
if (dev->addr_len) {
if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) ||
nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast))
@@ -1852,7 +2129,8 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb,
if (rtnl_phys_switch_id_fill(skb, dev))
goto nla_put_failure;
- if (rtnl_fill_stats(skb, dev))
+ if (!(ext_filter_mask & RTEXT_FILTER_SKIP_STATS) &&
+ rtnl_fill_stats(skb, dev))
goto nla_put_failure;
if (rtnl_fill_vf(skb, dev, ext_filter_mask))
@@ -1869,9 +2147,6 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb,
goto nla_put_failure;
}
- if (rtnl_fill_link_netnsid(skb, dev, src_net, gfp))
- goto nla_put_failure;
-
if (new_nsid &&
nla_put_s32(skb, IFLA_NEW_NETNSID, *new_nsid) < 0)
goto nla_put_failure;
@@ -1884,12 +2159,18 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb,
goto nla_put_failure;
rcu_read_lock();
+ if (rtnl_fill_link_netnsid(skb, dev, src_net, GFP_ATOMIC))
+ goto nla_put_failure_rcu;
+ qdisc = rcu_dereference(dev->qdisc);
+ if (qdisc && nla_put_string(skb, IFLA_QDISC, qdisc->ops->id))
+ goto nla_put_failure_rcu;
if (rtnl_fill_link_af(skb, dev, ext_filter_mask))
goto nla_put_failure_rcu;
- rcu_read_unlock();
-
+ if (rtnl_fill_link_ifmap(skb, dev))
+ goto nla_put_failure_rcu;
if (rtnl_fill_prop_list(skb, dev))
- goto nla_put_failure;
+ goto nla_put_failure_rcu;
+ rcu_read_unlock();
if (dev->dev.parent &&
nla_put_string(skb, IFLA_PARENT_DEV_NAME,
@@ -1904,6 +2185,9 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb,
if (rtnl_fill_devlink_port(skb, dev))
goto nla_put_failure;
+ if (rtnl_fill_dpll_pin(skb, dev))
+ goto nla_put_failure;
+
nlmsg_end(skb, nlh);
return 0;
@@ -1915,6 +2199,7 @@ nla_put_failure:
}
static const struct nla_policy ifla_policy[IFLA_MAX+1] = {
+ [IFLA_UNSPEC] = { .strict_start_type = IFLA_DPLL_PIN },
[IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 },
[IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
[IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
@@ -1943,7 +2228,7 @@ static const struct nla_policy ifla_policy[IFLA_MAX+1] = {
[IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 },
[IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 },
[IFLA_GSO_MAX_SEGS] = { .type = NLA_U32 },
- [IFLA_GSO_MAX_SIZE] = { .type = NLA_U32 },
+ [IFLA_GSO_MAX_SIZE] = NLA_POLICY_MIN(NLA_U32, MAX_TCP_HEADER + 1),
[IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN },
[IFLA_CARRIER_CHANGES] = { .type = NLA_U32 }, /* ignored */
[IFLA_PHYS_SWITCH_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN },
@@ -1968,6 +2253,11 @@ static const struct nla_policy ifla_policy[IFLA_MAX+1] = {
[IFLA_TSO_MAX_SIZE] = { .type = NLA_REJECT },
[IFLA_TSO_MAX_SEGS] = { .type = NLA_REJECT },
[IFLA_ALLMULTI] = { .type = NLA_REJECT },
+ [IFLA_GSO_IPV4_MAX_SIZE] = NLA_POLICY_MIN(NLA_U32, MAX_TCP_HEADER + 1),
+ [IFLA_GRO_IPV4_MAX_SIZE] = { .type = NLA_U32 },
+ [IFLA_NETNS_IMMUTABLE] = { .type = NLA_REJECT },
+ [IFLA_HEADROOM] = { .type = NLA_REJECT },
+ [IFLA_TAILROOM] = { .type = NLA_REJECT },
};
static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = {
@@ -2021,10 +2311,11 @@ static const struct nla_policy ifla_xdp_policy[IFLA_XDP_MAX + 1] = {
[IFLA_XDP_PROG_ID] = { .type = NLA_U32 },
};
-static const struct rtnl_link_ops *linkinfo_to_kind_ops(const struct nlattr *nla)
+static struct rtnl_link_ops *linkinfo_to_kind_ops(const struct nlattr *nla,
+ int *ops_srcu_index)
{
- const struct rtnl_link_ops *ops = NULL;
struct nlattr *linfo[IFLA_INFO_MAX + 1];
+ struct rtnl_link_ops *ops = NULL;
if (nla_parse_nested_deprecated(linfo, IFLA_INFO_MAX, nla, ifla_info_policy, NULL) < 0)
return NULL;
@@ -2033,7 +2324,7 @@ static const struct rtnl_link_ops *linkinfo_to_kind_ops(const struct nlattr *nla
char kind[MODULE_NAME_LEN];
nla_strscpy(kind, linfo[IFLA_INFO_KIND], sizeof(kind));
- ops = rtnl_link_ops_get(kind);
+ ops = rtnl_link_ops_get(kind, ops_srcu_index);
}
return ops;
@@ -2116,12 +2407,12 @@ static int rtnl_valid_dump_ifinfo_req(const struct nlmsghdr *nlh,
if (strict_check) {
struct ifinfomsg *ifm;
- if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifm))) {
+ ifm = nlmsg_payload(nlh, sizeof(*ifm));
+ if (!ifm) {
NL_SET_ERR_MSG(extack, "Invalid header for link dump");
return -EINVAL;
}
- ifm = nlmsg_data(nlh);
if (ifm->__ifi_pad || ifm->ifi_type || ifm->ifi_flags ||
ifm->ifi_change) {
NL_SET_ERR_MSG(extack, "Invalid values in header for link dump request");
@@ -2154,24 +2445,22 @@ static int rtnl_valid_dump_ifinfo_req(const struct nlmsghdr *nlh,
static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
{
struct netlink_ext_ack *extack = cb->extack;
+ struct rtnl_link_ops *kind_ops = NULL;
const struct nlmsghdr *nlh = cb->nlh;
struct net *net = sock_net(skb->sk);
- struct net *tgt_net = net;
- int h, s_h;
- int idx = 0, s_idx;
- struct net_device *dev;
- struct hlist_head *head;
+ unsigned int flags = NLM_F_MULTI;
struct nlattr *tb[IFLA_MAX+1];
+ struct {
+ unsigned long ifindex;
+ } *ctx = (void *)cb->ctx;
+ struct net *tgt_net = net;
u32 ext_filter_mask = 0;
- const struct rtnl_link_ops *kind_ops = NULL;
- unsigned int flags = NLM_F_MULTI;
+ struct net_device *dev;
+ int ops_srcu_index;
int master_idx = 0;
int netnsid = -1;
int err, i;
- s_h = cb->args[0];
- s_idx = cb->args[1];
-
err = rtnl_valid_dump_ifinfo_req(nlh, cb->strict_check, tb, extack);
if (err < 0) {
if (cb->strict_check)
@@ -2191,7 +2480,9 @@ static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
tgt_net = rtnl_get_net_ns_capable(skb->sk, netnsid);
if (IS_ERR(tgt_net)) {
NL_SET_ERR_MSG(extack, "Invalid target network namespace id");
- return PTR_ERR(tgt_net);
+ err = PTR_ERR(tgt_net);
+ netnsid = -1;
+ goto out;
}
break;
case IFLA_EXT_MASK:
@@ -2201,12 +2492,13 @@ static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
master_idx = nla_get_u32(tb[i]);
break;
case IFLA_LINKINFO:
- kind_ops = linkinfo_to_kind_ops(tb[i]);
+ kind_ops = linkinfo_to_kind_ops(tb[i], &ops_srcu_index);
break;
default:
if (cb->strict_check) {
NL_SET_ERR_MSG(extack, "Unsupported attribute in link dump request");
- return -EINVAL;
+ err = -EINVAL;
+ goto out;
}
}
}
@@ -2215,55 +2507,59 @@ static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
flags |= NLM_F_DUMP_FILTERED;
walk_entries:
- for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
- idx = 0;
- head = &tgt_net->dev_index_head[h];
- hlist_for_each_entry(dev, head, index_hlist) {
- if (link_dump_filtered(dev, master_idx, kind_ops))
- goto cont;
- if (idx < s_idx)
- goto cont;
- err = rtnl_fill_ifinfo(skb, dev, net,
- RTM_NEWLINK,
- NETLINK_CB(cb->skb).portid,
- nlh->nlmsg_seq, 0, flags,
- ext_filter_mask, 0, NULL, 0,
- netnsid, GFP_KERNEL);
-
- if (err < 0) {
- if (likely(skb->len))
- goto out;
-
- goto out_err;
- }
-cont:
- idx++;
- }
+ err = 0;
+ for_each_netdev_dump(tgt_net, dev, ctx->ifindex) {
+ if (link_dump_filtered(dev, master_idx, kind_ops))
+ continue;
+ err = rtnl_fill_ifinfo(skb, dev, net, RTM_NEWLINK,
+ NETLINK_CB(cb->skb).portid,
+ nlh->nlmsg_seq, 0, flags,
+ ext_filter_mask, 0, NULL, 0,
+ netnsid, GFP_KERNEL);
+ if (err < 0)
+ break;
}
-out:
- err = skb->len;
-out_err:
- cb->args[1] = idx;
- cb->args[0] = h;
+
+
cb->seq = tgt_net->dev_base_seq;
nl_dump_check_consistent(cb, nlmsg_hdr(skb));
+
+out:
+
+ if (kind_ops)
+ rtnl_link_ops_put(kind_ops, ops_srcu_index);
if (netnsid >= 0)
put_net(tgt_net);
return err;
}
-int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len,
- struct netlink_ext_ack *exterr)
+int rtnl_nla_parse_ifinfomsg(struct nlattr **tb, const struct nlattr *nla_peer,
+ struct netlink_ext_ack *exterr)
{
- return nla_parse_deprecated(tb, IFLA_MAX, head, len, ifla_policy,
+ const struct ifinfomsg *ifmp;
+ const struct nlattr *attrs;
+ size_t len;
+
+ ifmp = nla_data(nla_peer);
+ attrs = nla_data(nla_peer) + sizeof(struct ifinfomsg);
+ len = nla_len(nla_peer) - sizeof(struct ifinfomsg);
+
+ if (ifmp->ifi_index < 0) {
+ NL_SET_ERR_MSG_ATTR(exterr, nla_peer,
+ "ifindex can't be negative");
+ return -EINVAL;
+ }
+
+ return nla_parse_deprecated(tb, IFLA_MAX, attrs, len, ifla_policy,
exterr);
}
-EXPORT_SYMBOL(rtnl_nla_parse_ifla);
+EXPORT_SYMBOL(rtnl_nla_parse_ifinfomsg);
-struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[])
+static struct net *rtnl_link_get_net_ifla(struct nlattr *tb[])
{
- struct net *net;
+ struct net *net = NULL;
+
/* Examine the link attributes and figure out which
* network namespace we are talking about.
*/
@@ -2271,8 +2567,17 @@ struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[])
net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID]));
else if (tb[IFLA_NET_NS_FD])
net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD]));
- else
+
+ return net;
+}
+
+struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[])
+{
+ struct net *net = rtnl_link_get_net_ifla(tb);
+
+ if (!net)
net = get_net(src_net);
+
return net;
}
EXPORT_SYMBOL(rtnl_link_get_net);
@@ -2368,14 +2673,43 @@ static int rtnl_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[],
struct netlink_ext_ack *extack)
{
- if (dev) {
- if (tb[IFLA_ADDRESS] &&
- nla_len(tb[IFLA_ADDRESS]) < dev->addr_len)
- return -EINVAL;
+ if (tb[IFLA_ADDRESS] &&
+ nla_len(tb[IFLA_ADDRESS]) < dev->addr_len)
+ return -EINVAL;
- if (tb[IFLA_BROADCAST] &&
- nla_len(tb[IFLA_BROADCAST]) < dev->addr_len)
- return -EINVAL;
+ if (tb[IFLA_BROADCAST] &&
+ nla_len(tb[IFLA_BROADCAST]) < dev->addr_len)
+ return -EINVAL;
+
+ if (tb[IFLA_GSO_MAX_SIZE] &&
+ nla_get_u32(tb[IFLA_GSO_MAX_SIZE]) > dev->tso_max_size) {
+ NL_SET_ERR_MSG(extack, "too big gso_max_size");
+ return -EINVAL;
+ }
+
+ if (tb[IFLA_GSO_MAX_SEGS] &&
+ (nla_get_u32(tb[IFLA_GSO_MAX_SEGS]) > GSO_MAX_SEGS ||
+ nla_get_u32(tb[IFLA_GSO_MAX_SEGS]) > dev->tso_max_segs)) {
+ NL_SET_ERR_MSG(extack, "too big gso_max_segs");
+ return -EINVAL;
+ }
+
+ if (tb[IFLA_GRO_MAX_SIZE] &&
+ nla_get_u32(tb[IFLA_GRO_MAX_SIZE]) > GRO_MAX_SIZE) {
+ NL_SET_ERR_MSG(extack, "too big gro_max_size");
+ return -EINVAL;
+ }
+
+ if (tb[IFLA_GSO_IPV4_MAX_SIZE] &&
+ nla_get_u32(tb[IFLA_GSO_IPV4_MAX_SIZE]) > dev->tso_max_size) {
+ NL_SET_ERR_MSG(extack, "too big gso_ipv4_max_size");
+ return -EINVAL;
+ }
+
+ if (tb[IFLA_GRO_IPV4_MAX_SIZE] &&
+ nla_get_u32(tb[IFLA_GRO_IPV4_MAX_SIZE]) > GRO_MAX_SIZE) {
+ NL_SET_ERR_MSG(extack, "too big gro_ipv4_max_size");
+ return -EINVAL;
}
if (tb[IFLA_AF_SPEC]) {
@@ -2383,20 +2717,24 @@ static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[],
int rem, err;
nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) {
- const struct rtnl_af_ops *af_ops;
+ struct rtnl_af_ops *af_ops;
+ int af_ops_srcu_index;
- af_ops = rtnl_af_lookup(nla_type(af));
+ af_ops = rtnl_af_lookup(nla_type(af), &af_ops_srcu_index);
if (!af_ops)
return -EAFNOSUPPORT;
if (!af_ops->set_link_af)
- return -EOPNOTSUPP;
-
- if (af_ops->validate_link_af) {
+ err = -EOPNOTSUPP;
+ else if (af_ops->validate_link_af)
err = af_ops->validate_link_af(dev, af, extack);
- if (err < 0)
- return err;
- }
+ else
+ err = 0;
+
+ rtnl_af_put(af_ops, af_ops_srcu_index);
+
+ if (err < 0)
+ return err;
}
}
@@ -2462,7 +2800,7 @@ static int do_setvfinfo(struct net_device *dev, struct nlattr **tb)
nla_for_each_nested(attr, tb[IFLA_VF_VLAN_LIST], rem) {
if (nla_type(attr) != IFLA_VF_VLAN_INFO ||
- nla_len(attr) < NLA_HDRLEN) {
+ nla_len(attr) < sizeof(struct ifla_vf_vlan_info)) {
return -EINVAL;
}
if (len >= MAX_VLAN_LIST_LEN)
@@ -2595,12 +2933,19 @@ static int do_set_master(struct net_device *dev, int ifindex,
const struct net_device_ops *ops;
int err;
+ /* Release the lower lock, the upper is responsible for locking
+ * the lower if needed. None of the existing upper devices
+ * use netdev instance lock, so don't grab it.
+ */
+
if (upper_dev) {
if (upper_dev->ifindex == ifindex)
return 0;
ops = upper_dev->netdev_ops;
if (ops->ndo_del_slave) {
+ netdev_unlock_ops(dev);
err = ops->ndo_del_slave(upper_dev, dev);
+ netdev_lock_ops(dev);
if (err)
return err;
} else {
@@ -2614,7 +2959,9 @@ static int do_set_master(struct net_device *dev, int ifindex,
return -EINVAL;
ops = upper_dev->netdev_ops;
if (ops->ndo_add_slave) {
+ netdev_unlock_ops(dev);
err = ops->ndo_add_slave(upper_dev, dev, extack);
+ netdev_lock_ops(dev);
if (err)
return err;
} else {
@@ -2640,7 +2987,7 @@ static int do_set_proto_down(struct net_device *dev,
bool proto_down;
int err;
- if (!(dev->priv_flags & IFF_CHANGE_PROTO_DOWN)) {
+ if (!dev->change_proto_down) {
NL_SET_ERR_MSG(extack, "Protodown not supported by device");
return -EOPNOTSUPP;
}
@@ -2664,7 +3011,7 @@ static int do_set_proto_down(struct net_device *dev,
if (pdreason[IFLA_PROTO_DOWN_REASON_MASK])
mask = nla_get_u32(pdreason[IFLA_PROTO_DOWN_REASON_MASK]);
- dev_change_proto_down_reason(dev, mask, value);
+ netdev_change_proto_down_reason_locked(dev, mask, value);
}
if (nl_proto_down) {
@@ -2675,8 +3022,7 @@ static int do_set_proto_down(struct net_device *dev,
NL_SET_ERR_MSG(extack, "Cannot clear protodown, active reasons");
return -EBUSY;
}
- err = dev_change_proto_down(dev,
- proto_down);
+ err = netif_change_proto_down(dev, proto_down);
if (err)
return err;
}
@@ -2687,8 +3033,8 @@ static int do_set_proto_down(struct net_device *dev,
#define DO_SETLINK_MODIFIED 0x01
/* notify flag means notify + modified. */
#define DO_SETLINK_NOTIFY 0x03
-static int do_setlink(const struct sk_buff *skb,
- struct net_device *dev, struct ifinfomsg *ifm,
+static int do_setlink(const struct sk_buff *skb, struct net_device *dev,
+ struct net *tgt_net, struct ifinfomsg *ifm,
struct netlink_ext_ack *extack,
struct nlattr **tb, int status)
{
@@ -2705,30 +3051,22 @@ static int do_setlink(const struct sk_buff *skb,
else
ifname[0] = '\0';
- if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD] || tb[IFLA_TARGET_NETNSID]) {
+ if (!net_eq(tgt_net, dev_net(dev))) {
const char *pat = ifname[0] ? ifname : NULL;
- struct net *net;
int new_ifindex;
- net = rtnl_link_get_net_capable(skb, dev_net(dev),
- tb, CAP_NET_ADMIN);
- if (IS_ERR(net)) {
- err = PTR_ERR(net);
- goto errout;
- }
-
- if (tb[IFLA_NEW_IFINDEX])
- new_ifindex = nla_get_s32(tb[IFLA_NEW_IFINDEX]);
- else
- new_ifindex = 0;
+ new_ifindex = nla_get_s32_default(tb[IFLA_NEW_IFINDEX], 0);
- err = __dev_change_net_namespace(dev, net, pat, new_ifindex);
- put_net(net);
+ err = __dev_change_net_namespace(dev, tgt_net, pat,
+ new_ifindex, extack);
if (err)
- goto errout;
+ return err;
+
status |= DO_SETLINK_MODIFIED;
}
+ netdev_lock_ops(dev);
+
if (tb[IFLA_MAP]) {
struct rtnl_link_ifmap *u_map;
struct ifmap k_map;
@@ -2759,35 +3097,35 @@ static int do_setlink(const struct sk_buff *skb,
}
if (tb[IFLA_ADDRESS]) {
- struct sockaddr *sa;
- int len;
-
- len = sizeof(sa_family_t) + max_t(size_t, dev->addr_len,
- sizeof(*sa));
- sa = kmalloc(len, GFP_KERNEL);
- if (!sa) {
- err = -ENOMEM;
+ struct sockaddr_storage ss = { };
+
+ netdev_unlock_ops(dev);
+
+ /* dev_addr_sem is an outer lock, enforce proper ordering */
+ down_write(&dev_addr_sem);
+ netdev_lock_ops(dev);
+
+ ss.ss_family = dev->type;
+ memcpy(ss.__data, nla_data(tb[IFLA_ADDRESS]), dev->addr_len);
+ err = netif_set_mac_address(dev, &ss, extack);
+ if (err) {
+ up_write(&dev_addr_sem);
goto errout;
}
- sa->sa_family = dev->type;
- memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]),
- dev->addr_len);
- err = dev_set_mac_address_user(dev, sa, extack);
- kfree(sa);
- if (err)
- goto errout;
status |= DO_SETLINK_MODIFIED;
+
+ up_write(&dev_addr_sem);
}
if (tb[IFLA_MTU]) {
- err = dev_set_mtu_ext(dev, nla_get_u32(tb[IFLA_MTU]), extack);
+ err = netif_set_mtu_ext(dev, nla_get_u32(tb[IFLA_MTU]), extack);
if (err < 0)
goto errout;
status |= DO_SETLINK_MODIFIED;
}
if (tb[IFLA_GROUP]) {
- dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP]));
+ netif_set_group(dev, nla_get_u32(tb[IFLA_GROUP]));
status |= DO_SETLINK_NOTIFY;
}
@@ -2797,15 +3135,15 @@ static int do_setlink(const struct sk_buff *skb,
* requested.
*/
if (ifm->ifi_index > 0 && ifname[0]) {
- err = dev_change_name(dev, ifname);
+ err = netif_change_name(dev, ifname);
if (err < 0)
goto errout;
status |= DO_SETLINK_MODIFIED;
}
if (tb[IFLA_IFALIAS]) {
- err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]),
- nla_len(tb[IFLA_IFALIAS]));
+ err = netif_set_alias(dev, nla_data(tb[IFLA_IFALIAS]),
+ nla_len(tb[IFLA_IFALIAS]));
if (err < 0)
goto errout;
status |= DO_SETLINK_NOTIFY;
@@ -2816,6 +3154,13 @@ static int do_setlink(const struct sk_buff *skb,
call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
}
+ if (ifm->ifi_flags || ifm->ifi_change) {
+ err = netif_change_flags(dev, rtnl_dev_combine_flags(dev, ifm),
+ extack);
+ if (err < 0)
+ goto errout;
+ }
+
if (tb[IFLA_MASTER]) {
err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER]), extack);
if (err)
@@ -2823,15 +3168,8 @@ static int do_setlink(const struct sk_buff *skb,
status |= DO_SETLINK_MODIFIED;
}
- if (ifm->ifi_flags || ifm->ifi_change) {
- err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm),
- extack);
- if (err < 0)
- goto errout;
- }
-
if (tb[IFLA_CARRIER]) {
- err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER]));
+ err = netif_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER]));
if (err)
goto errout;
status |= DO_SETLINK_MODIFIED;
@@ -2840,7 +3178,7 @@ static int do_setlink(const struct sk_buff *skb,
if (tb[IFLA_TXQLEN]) {
unsigned int value = nla_get_u32(tb[IFLA_TXQLEN]);
- err = dev_change_tx_queue_len(dev, value);
+ err = netif_change_tx_queue_len(dev, value);
if (err)
goto errout;
status |= DO_SETLINK_MODIFIED;
@@ -2849,11 +3187,6 @@ static int do_setlink(const struct sk_buff *skb,
if (tb[IFLA_GSO_MAX_SIZE]) {
u32 max_size = nla_get_u32(tb[IFLA_GSO_MAX_SIZE]);
- if (max_size > dev->tso_max_size) {
- err = -EINVAL;
- goto errout;
- }
-
if (dev->gso_max_size ^ max_size) {
netif_set_gso_max_size(dev, max_size);
status |= DO_SETLINK_MODIFIED;
@@ -2863,11 +3196,6 @@ static int do_setlink(const struct sk_buff *skb,
if (tb[IFLA_GSO_MAX_SEGS]) {
u32 max_segs = nla_get_u32(tb[IFLA_GSO_MAX_SEGS]);
- if (max_segs > GSO_MAX_SEGS || max_segs > dev->tso_max_segs) {
- err = -EINVAL;
- goto errout;
- }
-
if (dev->gso_max_segs ^ max_segs) {
netif_set_gso_max_segs(dev, max_segs);
status |= DO_SETLINK_MODIFIED;
@@ -2883,17 +3211,33 @@ static int do_setlink(const struct sk_buff *skb,
}
}
+ if (tb[IFLA_GSO_IPV4_MAX_SIZE]) {
+ u32 max_size = nla_get_u32(tb[IFLA_GSO_IPV4_MAX_SIZE]);
+
+ if (dev->gso_ipv4_max_size ^ max_size) {
+ netif_set_gso_ipv4_max_size(dev, max_size);
+ status |= DO_SETLINK_MODIFIED;
+ }
+ }
+
+ if (tb[IFLA_GRO_IPV4_MAX_SIZE]) {
+ u32 gro_max_size = nla_get_u32(tb[IFLA_GRO_IPV4_MAX_SIZE]);
+
+ if (dev->gro_ipv4_max_size ^ gro_max_size) {
+ netif_set_gro_ipv4_max_size(dev, gro_max_size);
+ status |= DO_SETLINK_MODIFIED;
+ }
+ }
+
if (tb[IFLA_OPERSTATE])
set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
if (tb[IFLA_LINKMODE]) {
unsigned char value = nla_get_u8(tb[IFLA_LINKMODE]);
- write_lock(&dev_base_lock);
if (dev->link_mode ^ value)
status |= DO_SETLINK_NOTIFY;
- dev->link_mode = value;
- write_unlock(&dev_base_lock);
+ WRITE_ONCE(dev->link_mode, value);
}
if (tb[IFLA_VFINFO_LIST]) {
@@ -2978,11 +3322,18 @@ static int do_setlink(const struct sk_buff *skb,
int rem;
nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) {
- const struct rtnl_af_ops *af_ops;
+ struct rtnl_af_ops *af_ops;
+ int af_ops_srcu_index;
- BUG_ON(!(af_ops = rtnl_af_lookup(nla_type(af))));
+ af_ops = rtnl_af_lookup(nla_type(af), &af_ops_srcu_index);
+ if (!af_ops) {
+ err = -EAFNOSUPPORT;
+ goto errout;
+ }
err = af_ops->set_link_af(dev, af, extack);
+ rtnl_af_put(af_ops, af_ops_srcu_index);
+
if (err < 0)
goto errout;
@@ -3051,13 +3402,15 @@ static int do_setlink(const struct sk_buff *skb,
errout:
if (status & DO_SETLINK_MODIFIED) {
if ((status & DO_SETLINK_NOTIFY) == DO_SETLINK_NOTIFY)
- netdev_state_change(dev);
+ netif_state_change(dev);
if (err < 0)
net_warn_ratelimited("A link change request failed with some changes committed already. Interface %s may have been left with an inconsistent configuration, please check.\n",
dev->name);
}
+ netdev_unlock_ops(dev);
+
return err;
}
@@ -3079,11 +3432,13 @@ static struct net_device *rtnl_dev_get(struct net *net,
static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
+ struct ifinfomsg *ifm = nlmsg_data(nlh);
struct net *net = sock_net(skb->sk);
- struct ifinfomsg *ifm;
- struct net_device *dev;
- int err;
struct nlattr *tb[IFLA_MAX+1];
+ struct net_device *dev = NULL;
+ struct rtnl_nets rtnl_nets;
+ struct net *tgt_net;
+ int err;
err = nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFLA_MAX,
ifla_policy, extack);
@@ -3094,21 +3449,32 @@ static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh,
if (err < 0)
goto errout;
- err = -EINVAL;
- ifm = nlmsg_data(nlh);
+ tgt_net = rtnl_link_get_net_capable(skb, net, tb, CAP_NET_ADMIN);
+ if (IS_ERR(tgt_net)) {
+ err = PTR_ERR(tgt_net);
+ goto errout;
+ }
+
+ rtnl_nets_init(&rtnl_nets);
+ rtnl_nets_add(&rtnl_nets, get_net(net));
+ rtnl_nets_add(&rtnl_nets, tgt_net);
+
+ rtnl_nets_lock(&rtnl_nets);
+
if (ifm->ifi_index > 0)
dev = __dev_get_by_index(net, ifm->ifi_index);
else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME])
dev = rtnl_dev_get(net, tb);
else
- goto errout;
+ err = -EINVAL;
- if (dev == NULL) {
+ if (dev)
+ err = do_setlink(skb, dev, tgt_net, ifm, extack, tb, 0);
+ else if (!err)
err = -ENODEV;
- goto errout;
- }
- err = do_setlink(skb, dev, ifm, extack, tb, 0);
+ rtnl_nets_unlock(&rtnl_nets);
+ rtnl_nets_destroy(&rtnl_nets);
errout:
return err;
}
@@ -3168,14 +3534,14 @@ EXPORT_SYMBOL_GPL(rtnl_delete_link);
static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
+ struct ifinfomsg *ifm = nlmsg_data(nlh);
struct net *net = sock_net(skb->sk);
u32 portid = NETLINK_CB(skb).portid;
- struct net *tgt_net = net;
- struct net_device *dev = NULL;
- struct ifinfomsg *ifm;
struct nlattr *tb[IFLA_MAX+1];
- int err;
+ struct net_device *dev = NULL;
+ struct net *tgt_net = net;
int netnsid = -1;
+ int err;
err = nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFLA_MAX,
ifla_policy, extack);
@@ -3193,27 +3559,24 @@ static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh,
return PTR_ERR(tgt_net);
}
- err = -EINVAL;
- ifm = nlmsg_data(nlh);
+ rtnl_net_lock(tgt_net);
+
if (ifm->ifi_index > 0)
dev = __dev_get_by_index(tgt_net, ifm->ifi_index);
else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME])
- dev = rtnl_dev_get(net, tb);
+ dev = rtnl_dev_get(tgt_net, tb);
+
+ if (dev)
+ err = rtnl_delete_link(dev, portid, nlh);
+ else if (ifm->ifi_index > 0 || tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME])
+ err = -ENODEV;
else if (tb[IFLA_GROUP])
err = rtnl_group_dellink(tgt_net, nla_get_u32(tb[IFLA_GROUP]));
else
- goto out;
-
- if (!dev) {
- if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME] || ifm->ifi_index > 0)
- err = -ENODEV;
-
- goto out;
- }
+ err = -EINVAL;
- err = rtnl_delete_link(dev, portid, nlh);
+ rtnl_net_unlock(tgt_net);
-out:
if (netnsid >= 0)
put_net(tgt_net);
@@ -3223,7 +3586,7 @@ out:
int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm,
u32 portid, const struct nlmsghdr *nlh)
{
- unsigned int old_flags;
+ unsigned int old_flags, changed;
int err;
old_flags = dev->flags;
@@ -3234,12 +3597,13 @@ int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm,
return err;
}
- if (dev->rtnl_link_state == RTNL_LINK_INITIALIZED) {
- __dev_notify_flags(dev, old_flags, (old_flags ^ dev->flags), portid, nlh);
- } else {
- dev->rtnl_link_state = RTNL_LINK_INITIALIZED;
- __dev_notify_flags(dev, old_flags, ~0U, portid, nlh);
+ changed = old_flags ^ dev->flags;
+ if (dev->rtnl_link_initializing) {
+ dev->rtnl_link_initializing = false;
+ changed = ~0U;
}
+
+ __dev_notify_flags(dev, old_flags, changed, portid, nlh);
return 0;
}
EXPORT_SYMBOL(rtnl_configure_link);
@@ -3253,6 +3617,7 @@ struct net_device *rtnl_create_link(struct net *net, const char *ifname,
struct net_device *dev;
unsigned int num_tx_queues = 1;
unsigned int num_rx_queues = 1;
+ int err;
if (tb[IFLA_NUM_TX_QUEUES])
num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]);
@@ -3288,13 +3653,18 @@ struct net_device *rtnl_create_link(struct net *net, const char *ifname,
if (!dev)
return ERR_PTR(-ENOMEM);
+ err = validate_linkmsg(dev, tb, extack);
+ if (err < 0) {
+ free_netdev(dev);
+ return ERR_PTR(err);
+ }
+
dev_net_set(dev, net);
dev->rtnl_link_ops = ops;
- dev->rtnl_link_state = RTNL_LINK_INITIALIZING;
+ dev->rtnl_link_initializing = true;
if (tb[IFLA_MTU]) {
u32 mtu = nla_get_u32(tb[IFLA_MTU]);
- int err;
err = dev_validate_mtu(dev, mtu, extack);
if (err) {
@@ -3318,30 +3688,106 @@ struct net_device *rtnl_create_link(struct net *net, const char *ifname,
if (tb[IFLA_LINKMODE])
dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
if (tb[IFLA_GROUP])
- dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP]));
+ netif_set_group(dev, nla_get_u32(tb[IFLA_GROUP]));
if (tb[IFLA_GSO_MAX_SIZE])
netif_set_gso_max_size(dev, nla_get_u32(tb[IFLA_GSO_MAX_SIZE]));
if (tb[IFLA_GSO_MAX_SEGS])
netif_set_gso_max_segs(dev, nla_get_u32(tb[IFLA_GSO_MAX_SEGS]));
if (tb[IFLA_GRO_MAX_SIZE])
netif_set_gro_max_size(dev, nla_get_u32(tb[IFLA_GRO_MAX_SIZE]));
+ if (tb[IFLA_GSO_IPV4_MAX_SIZE])
+ netif_set_gso_ipv4_max_size(dev, nla_get_u32(tb[IFLA_GSO_IPV4_MAX_SIZE]));
+ if (tb[IFLA_GRO_IPV4_MAX_SIZE])
+ netif_set_gro_ipv4_max_size(dev, nla_get_u32(tb[IFLA_GRO_IPV4_MAX_SIZE]));
return dev;
}
EXPORT_SYMBOL(rtnl_create_link);
+struct rtnl_newlink_tbs {
+ struct nlattr *tb[IFLA_MAX + 1];
+ struct nlattr *linkinfo[IFLA_INFO_MAX + 1];
+ struct nlattr *attr[RTNL_MAX_TYPE + 1];
+ struct nlattr *slave_attr[RTNL_SLAVE_MAX_TYPE + 1];
+};
+
+static int rtnl_changelink(const struct sk_buff *skb, struct nlmsghdr *nlh,
+ const struct rtnl_link_ops *ops,
+ struct net_device *dev, struct net *tgt_net,
+ struct rtnl_newlink_tbs *tbs,
+ struct nlattr **data,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr ** const linkinfo = tbs->linkinfo;
+ struct nlattr ** const tb = tbs->tb;
+ int status = 0;
+ int err;
+
+ if (nlh->nlmsg_flags & NLM_F_EXCL)
+ return -EEXIST;
+
+ if (nlh->nlmsg_flags & NLM_F_REPLACE)
+ return -EOPNOTSUPP;
+
+ if (linkinfo[IFLA_INFO_DATA]) {
+ if (!ops || ops != dev->rtnl_link_ops || !ops->changelink)
+ return -EOPNOTSUPP;
+
+ err = ops->changelink(dev, tb, data, extack);
+ if (err < 0)
+ return err;
+
+ status |= DO_SETLINK_NOTIFY;
+ }
+
+ if (linkinfo[IFLA_INFO_SLAVE_DATA]) {
+ const struct rtnl_link_ops *m_ops = NULL;
+ struct nlattr **slave_data = NULL;
+ struct net_device *master_dev;
+
+ master_dev = netdev_master_upper_dev_get(dev);
+ if (master_dev)
+ m_ops = master_dev->rtnl_link_ops;
+
+ if (!m_ops || !m_ops->slave_changelink)
+ return -EOPNOTSUPP;
+
+ if (m_ops->slave_maxtype > RTNL_SLAVE_MAX_TYPE)
+ return -EINVAL;
+
+ if (m_ops->slave_maxtype) {
+ err = nla_parse_nested_deprecated(tbs->slave_attr,
+ m_ops->slave_maxtype,
+ linkinfo[IFLA_INFO_SLAVE_DATA],
+ m_ops->slave_policy, extack);
+ if (err < 0)
+ return err;
+
+ slave_data = tbs->slave_attr;
+ }
+
+ err = m_ops->slave_changelink(master_dev, dev, tb, slave_data, extack);
+ if (err < 0)
+ return err;
+
+ status |= DO_SETLINK_NOTIFY;
+ }
+
+ return do_setlink(skb, dev, tgt_net, nlmsg_data(nlh), extack, tb, status);
+}
+
static int rtnl_group_changelink(const struct sk_buff *skb,
- struct net *net, int group,
- struct ifinfomsg *ifm,
- struct netlink_ext_ack *extack,
- struct nlattr **tb)
+ struct net *net, struct net *tgt_net,
+ int group, struct ifinfomsg *ifm,
+ struct netlink_ext_ack *extack,
+ struct nlattr **tb)
{
struct net_device *dev, *aux;
int err;
for_each_netdev_safe(net, dev, aux) {
if (dev->group == group) {
- err = do_setlink(skb, dev, ifm, extack, tb, 0);
+ err = do_setlink(skb, dev, tgt_net, ifm, extack, tb, 0);
if (err < 0)
return err;
}
@@ -3352,14 +3798,21 @@ static int rtnl_group_changelink(const struct sk_buff *skb,
static int rtnl_newlink_create(struct sk_buff *skb, struct ifinfomsg *ifm,
const struct rtnl_link_ops *ops,
+ struct net *tgt_net, struct net *link_net,
+ struct net *peer_net,
const struct nlmsghdr *nlh,
struct nlattr **tb, struct nlattr **data,
struct netlink_ext_ack *extack)
{
unsigned char name_assign_type = NET_NAME_USER;
- struct net *net = sock_net(skb->sk);
+ struct rtnl_newlink_params params = {
+ .src_net = sock_net(skb->sk),
+ .link_net = link_net,
+ .peer_net = peer_net,
+ .tb = tb,
+ .data = data,
+ };
u32 portid = NETLINK_CB(skb).portid;
- struct net *dest_net, *link_net;
struct net_device *dev;
char ifname[IFNAMSIZ];
int err;
@@ -3374,28 +3827,8 @@ static int rtnl_newlink_create(struct sk_buff *skb, struct ifinfomsg *ifm,
name_assign_type = NET_NAME_ENUM;
}
- dest_net = rtnl_link_get_net_capable(skb, net, tb, CAP_NET_ADMIN);
- if (IS_ERR(dest_net))
- return PTR_ERR(dest_net);
-
- if (tb[IFLA_LINK_NETNSID]) {
- int id = nla_get_s32(tb[IFLA_LINK_NETNSID]);
-
- link_net = get_net_ns_by_id(dest_net, id);
- if (!link_net) {
- NL_SET_ERR_MSG(extack, "Unknown network namespace id");
- err = -EINVAL;
- goto out;
- }
- err = -EPERM;
- if (!netlink_ns_capable(skb, link_net->user_ns, CAP_NET_ADMIN))
- goto out;
- } else {
- link_net = NULL;
- }
-
- dev = rtnl_create_link(link_net ? : dest_net, ifname,
- name_assign_type, ops, tb, extack);
+ dev = rtnl_create_link(tgt_net, ifname, name_assign_type, ops, tb,
+ extack);
if (IS_ERR(dev)) {
err = PTR_ERR(dev);
goto out;
@@ -3404,7 +3837,7 @@ static int rtnl_newlink_create(struct sk_buff *skb, struct ifinfomsg *ifm,
dev->ifindex = ifm->ifi_index;
if (ops->newlink)
- err = ops->newlink(link_net ? : net, dev, tb, data, extack);
+ err = ops->newlink(dev, &params, extack);
else
err = register_netdevice(dev);
if (err < 0) {
@@ -3412,25 +3845,22 @@ static int rtnl_newlink_create(struct sk_buff *skb, struct ifinfomsg *ifm,
goto out;
}
+ netdev_lock_ops(dev);
+
err = rtnl_configure_link(dev, ifm, portid, nlh);
if (err < 0)
goto out_unregister;
- if (link_net) {
- err = dev_change_net_namespace(dev, dest_net, ifname);
- if (err < 0)
- goto out_unregister;
- }
if (tb[IFLA_MASTER]) {
err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER]), extack);
if (err)
goto out_unregister;
}
+
+ netdev_unlock_ops(dev);
out:
- if (link_net)
- put_net(link_net);
- put_net(dest_net);
return err;
out_unregister:
+ netdev_unlock_ops(dev);
if (ops->newlink) {
LIST_HEAD(list_kill);
@@ -3442,199 +3872,212 @@ out_unregister:
goto out;
}
-struct rtnl_newlink_tbs {
+static struct net *rtnl_get_peer_net(const struct rtnl_link_ops *ops,
+ struct nlattr *tbp[],
+ struct nlattr *data[],
+ struct netlink_ext_ack *extack)
+{
struct nlattr *tb[IFLA_MAX + 1];
- struct nlattr *attr[RTNL_MAX_TYPE + 1];
- struct nlattr *slave_attr[RTNL_SLAVE_MAX_TYPE + 1];
-};
+ int err;
+
+ if (!data || !data[ops->peer_type])
+ return rtnl_link_get_net_ifla(tbp);
+
+ err = rtnl_nla_parse_ifinfomsg(tb, data[ops->peer_type], extack);
+ if (err < 0)
+ return ERR_PTR(err);
+
+ if (ops->validate) {
+ err = ops->validate(tb, NULL, extack);
+ if (err < 0)
+ return ERR_PTR(err);
+ }
+
+ return rtnl_link_get_net_ifla(tb);
+}
static int __rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
+ const struct rtnl_link_ops *ops,
+ struct net *tgt_net, struct net *link_net,
+ struct net *peer_net,
struct rtnl_newlink_tbs *tbs,
+ struct nlattr **data,
struct netlink_ext_ack *extack)
{
- struct nlattr *linkinfo[IFLA_INFO_MAX + 1];
struct nlattr ** const tb = tbs->tb;
- const struct rtnl_link_ops *m_ops;
- struct net_device *master_dev;
struct net *net = sock_net(skb->sk);
- const struct rtnl_link_ops *ops;
- struct nlattr **slave_data;
- char kind[MODULE_NAME_LEN];
+ struct net *device_net;
struct net_device *dev;
struct ifinfomsg *ifm;
- struct nlattr **data;
bool link_specified;
- int err;
-#ifdef CONFIG_MODULES
-replay:
-#endif
- err = nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFLA_MAX,
- ifla_policy, extack);
- if (err < 0)
- return err;
-
- err = rtnl_ensure_unique_netns(tb, extack, false);
- if (err < 0)
- return err;
+ /* When creating, lookup for existing device in target net namespace */
+ device_net = (nlh->nlmsg_flags & NLM_F_CREATE) &&
+ (nlh->nlmsg_flags & NLM_F_EXCL) ?
+ tgt_net : net;
ifm = nlmsg_data(nlh);
if (ifm->ifi_index > 0) {
link_specified = true;
- dev = __dev_get_by_index(net, ifm->ifi_index);
+ dev = __dev_get_by_index(device_net, ifm->ifi_index);
+ } else if (ifm->ifi_index < 0) {
+ NL_SET_ERR_MSG(extack, "ifindex can't be negative");
+ return -EINVAL;
} else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) {
link_specified = true;
- dev = rtnl_dev_get(net, tb);
+ dev = rtnl_dev_get(device_net, tb);
} else {
link_specified = false;
dev = NULL;
}
- master_dev = NULL;
- m_ops = NULL;
- if (dev) {
- master_dev = netdev_master_upper_dev_get(dev);
- if (master_dev)
- m_ops = master_dev->rtnl_link_ops;
+ if (dev)
+ return rtnl_changelink(skb, nlh, ops, dev, tgt_net, tbs, data, extack);
+
+ if (!(nlh->nlmsg_flags & NLM_F_CREATE)) {
+ /* No dev found and NLM_F_CREATE not set. Requested dev does not exist,
+ * or it's for a group
+ */
+ if (link_specified || !tb[IFLA_GROUP])
+ return -ENODEV;
+
+ return rtnl_group_changelink(skb, net, tgt_net,
+ nla_get_u32(tb[IFLA_GROUP]),
+ ifm, extack, tb);
}
- err = validate_linkmsg(dev, tb, extack);
- if (err < 0)
- return err;
+ if (tb[IFLA_MAP] || tb[IFLA_PROTINFO])
+ return -EOPNOTSUPP;
+
+ if (!ops) {
+ NL_SET_ERR_MSG(extack, "Unknown device type");
+ return -EOPNOTSUPP;
+ }
+
+ return rtnl_newlink_create(skb, ifm, ops, tgt_net, link_net, peer_net, nlh,
+ tb, data, extack);
+}
+
+static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
+ struct netlink_ext_ack *extack)
+{
+ struct net *tgt_net, *link_net = NULL, *peer_net = NULL;
+ struct nlattr **tb, **linkinfo, **data = NULL;
+ struct rtnl_link_ops *ops = NULL;
+ struct rtnl_newlink_tbs *tbs;
+ struct rtnl_nets rtnl_nets;
+ int ops_srcu_index;
+ int ret;
+
+ tbs = kmalloc(sizeof(*tbs), GFP_KERNEL);
+ if (!tbs)
+ return -ENOMEM;
+
+ tb = tbs->tb;
+ ret = nlmsg_parse_deprecated(nlh, sizeof(struct ifinfomsg), tb,
+ IFLA_MAX, ifla_policy, extack);
+ if (ret < 0)
+ goto free;
+ ret = rtnl_ensure_unique_netns(tb, extack, false);
+ if (ret < 0)
+ goto free;
+
+ linkinfo = tbs->linkinfo;
if (tb[IFLA_LINKINFO]) {
- err = nla_parse_nested_deprecated(linkinfo, IFLA_INFO_MAX,
+ ret = nla_parse_nested_deprecated(linkinfo, IFLA_INFO_MAX,
tb[IFLA_LINKINFO],
ifla_info_policy, NULL);
- if (err < 0)
- return err;
- } else
- memset(linkinfo, 0, sizeof(linkinfo));
+ if (ret < 0)
+ goto free;
+ } else {
+ memset(linkinfo, 0, sizeof(tbs->linkinfo));
+ }
if (linkinfo[IFLA_INFO_KIND]) {
+ char kind[MODULE_NAME_LEN];
+
nla_strscpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind));
- ops = rtnl_link_ops_get(kind);
- } else {
- kind[0] = '\0';
- ops = NULL;
+ ops = rtnl_link_ops_get(kind, &ops_srcu_index);
+#ifdef CONFIG_MODULES
+ if (!ops) {
+ request_module("rtnl-link-%s", kind);
+ ops = rtnl_link_ops_get(kind, &ops_srcu_index);
+ }
+#endif
}
- data = NULL;
+ rtnl_nets_init(&rtnl_nets);
+
if (ops) {
- if (ops->maxtype > RTNL_MAX_TYPE)
- return -EINVAL;
+ if (ops->maxtype > RTNL_MAX_TYPE) {
+ ret = -EINVAL;
+ goto put_ops;
+ }
if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) {
- err = nla_parse_nested_deprecated(tbs->attr, ops->maxtype,
+ ret = nla_parse_nested_deprecated(tbs->attr, ops->maxtype,
linkinfo[IFLA_INFO_DATA],
ops->policy, extack);
- if (err < 0)
- return err;
+ if (ret < 0)
+ goto put_ops;
+
data = tbs->attr;
}
+
if (ops->validate) {
- err = ops->validate(tb, data, extack);
- if (err < 0)
- return err;
+ ret = ops->validate(tb, data, extack);
+ if (ret < 0)
+ goto put_ops;
}
- }
-
- slave_data = NULL;
- if (m_ops) {
- if (m_ops->slave_maxtype > RTNL_SLAVE_MAX_TYPE)
- return -EINVAL;
- if (m_ops->slave_maxtype &&
- linkinfo[IFLA_INFO_SLAVE_DATA]) {
- err = nla_parse_nested_deprecated(tbs->slave_attr,
- m_ops->slave_maxtype,
- linkinfo[IFLA_INFO_SLAVE_DATA],
- m_ops->slave_policy,
- extack);
- if (err < 0)
- return err;
- slave_data = tbs->slave_attr;
+ if (ops->peer_type) {
+ peer_net = rtnl_get_peer_net(ops, tb, data, extack);
+ if (IS_ERR(peer_net)) {
+ ret = PTR_ERR(peer_net);
+ goto put_ops;
+ }
+ if (peer_net)
+ rtnl_nets_add(&rtnl_nets, peer_net);
}
}
- if (dev) {
- int status = 0;
-
- if (nlh->nlmsg_flags & NLM_F_EXCL)
- return -EEXIST;
- if (nlh->nlmsg_flags & NLM_F_REPLACE)
- return -EOPNOTSUPP;
-
- if (linkinfo[IFLA_INFO_DATA]) {
- if (!ops || ops != dev->rtnl_link_ops ||
- !ops->changelink)
- return -EOPNOTSUPP;
+ tgt_net = rtnl_link_get_net_capable(skb, sock_net(skb->sk), tb, CAP_NET_ADMIN);
+ if (IS_ERR(tgt_net)) {
+ ret = PTR_ERR(tgt_net);
+ goto put_net;
+ }
- err = ops->changelink(dev, tb, data, extack);
- if (err < 0)
- return err;
- status |= DO_SETLINK_NOTIFY;
- }
+ rtnl_nets_add(&rtnl_nets, tgt_net);
- if (linkinfo[IFLA_INFO_SLAVE_DATA]) {
- if (!m_ops || !m_ops->slave_changelink)
- return -EOPNOTSUPP;
+ if (tb[IFLA_LINK_NETNSID]) {
+ int id = nla_get_s32(tb[IFLA_LINK_NETNSID]);
- err = m_ops->slave_changelink(master_dev, dev, tb,
- slave_data, extack);
- if (err < 0)
- return err;
- status |= DO_SETLINK_NOTIFY;
+ link_net = get_net_ns_by_id(tgt_net, id);
+ if (!link_net) {
+ NL_SET_ERR_MSG(extack, "Unknown network namespace id");
+ ret = -EINVAL;
+ goto put_net;
}
- return do_setlink(skb, dev, ifm, extack, tb, status);
- }
-
- if (!(nlh->nlmsg_flags & NLM_F_CREATE)) {
- /* No dev found and NLM_F_CREATE not set. Requested dev does not exist,
- * or it's for a group
- */
- if (link_specified)
- return -ENODEV;
- if (tb[IFLA_GROUP])
- return rtnl_group_changelink(skb, net,
- nla_get_u32(tb[IFLA_GROUP]),
- ifm, extack, tb);
- return -ENODEV;
- }
-
- if (tb[IFLA_MAP] || tb[IFLA_PROTINFO])
- return -EOPNOTSUPP;
+ rtnl_nets_add(&rtnl_nets, link_net);
- if (!ops) {
-#ifdef CONFIG_MODULES
- if (kind[0]) {
- __rtnl_unlock();
- request_module("rtnl-link-%s", kind);
- rtnl_lock();
- ops = rtnl_link_ops_get(kind);
- if (ops)
- goto replay;
+ if (!netlink_ns_capable(skb, link_net->user_ns, CAP_NET_ADMIN)) {
+ ret = -EPERM;
+ goto put_net;
}
-#endif
- NL_SET_ERR_MSG(extack, "Unknown device type");
- return -EOPNOTSUPP;
}
- return rtnl_newlink_create(skb, ifm, ops, nlh, tb, data, extack);
-}
-
-static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct netlink_ext_ack *extack)
-{
- struct rtnl_newlink_tbs *tbs;
- int ret;
-
- tbs = kmalloc(sizeof(*tbs), GFP_KERNEL);
- if (!tbs)
- return -ENOMEM;
+ rtnl_nets_lock(&rtnl_nets);
+ ret = __rtnl_newlink(skb, nlh, ops, tgt_net, link_net, peer_net, tbs, data, extack);
+ rtnl_nets_unlock(&rtnl_nets);
- ret = __rtnl_newlink(skb, nlh, tbs, extack);
+put_net:
+ rtnl_nets_destroy(&rtnl_nets);
+put_ops:
+ if (ops)
+ rtnl_link_ops_put(ops, ops_srcu_index);
+free:
kfree(tbs);
return ret;
}
@@ -3647,7 +4090,8 @@ static int rtnl_valid_getlink_req(struct sk_buff *skb,
struct ifinfomsg *ifm;
int i, err;
- if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifm))) {
+ ifm = nlmsg_payload(nlh, sizeof(*ifm));
+ if (!ifm) {
NL_SET_ERR_MSG(extack, "Invalid header for get link");
return -EINVAL;
}
@@ -3656,7 +4100,6 @@ static int rtnl_valid_getlink_req(struct sk_buff *skb,
return nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFLA_MAX,
ifla_policy, extack);
- ifm = nlmsg_data(nlh);
if (ifm->__ifi_pad || ifm->ifi_type || ifm->ifi_flags ||
ifm->ifi_change) {
NL_SET_ERR_MSG(extack, "Invalid values in header for get link request");
@@ -3732,10 +4175,18 @@ static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr *nlh,
goto out;
err = -ENOBUFS;
- nskb = nlmsg_new(if_nlmsg_size(dev, ext_filter_mask), GFP_KERNEL);
+ nskb = nlmsg_new_large(if_nlmsg_size(dev, ext_filter_mask));
if (nskb == NULL)
goto out;
+ /* Synchronize the carrier state so we don't report a state
+ * that we're not actually going to honour immediately; if
+ * the driver just did a carrier off->on transition, we can
+ * only TX if link watch work has run, but without this we'd
+ * already report carrier on, even if it doesn't work yet.
+ */
+ linkwatch_sync_dev(dev);
+
err = rtnl_fill_ifinfo(nskb, dev, net,
RTM_NEWLINK, NETLINK_CB(skb).portid,
nlh->nlmsg_seq, 0, 0, ext_filter_mask,
@@ -3855,22 +4306,28 @@ static int rtnl_dellinkprop(struct sk_buff *skb, struct nlmsghdr *nlh,
return rtnl_linkprop(RTM_DELLINKPROP, skb, nlh, extack);
}
-static u32 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh)
+static noinline_for_stack u32 rtnl_calcit(struct sk_buff *skb,
+ struct nlmsghdr *nlh)
{
struct net *net = sock_net(skb->sk);
size_t min_ifinfo_dump_size = 0;
- struct nlattr *tb[IFLA_MAX+1];
u32 ext_filter_mask = 0;
struct net_device *dev;
- int hdrlen;
+ struct nlattr *nla;
+ int hdrlen, rem;
/* Same kernel<->userspace interface hack as in rtnl_dump_ifinfo. */
hdrlen = nlmsg_len(nlh) < sizeof(struct ifinfomsg) ?
sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg);
- if (nlmsg_parse_deprecated(nlh, hdrlen, tb, IFLA_MAX, ifla_policy, NULL) >= 0) {
- if (tb[IFLA_EXT_MASK])
- ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]);
+ if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen))
+ return NLMSG_GOODSIZE;
+
+ nla_for_each_attr_type(nla, IFLA_EXT_MASK,
+ nlmsg_attrdata(nlh, hdrlen),
+ nlmsg_attrlen(nlh, hdrlen), rem) {
+ if (nla_len(nla) == sizeof(u32))
+ ext_filter_mask = nla_get_u32(nla);
}
if (!ext_filter_mask)
@@ -3939,16 +4396,23 @@ static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb)
struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev,
unsigned int change,
u32 event, gfp_t flags, int *new_nsid,
- int new_ifindex, u32 portid, u32 seq)
+ int new_ifindex, u32 portid,
+ const struct nlmsghdr *nlh)
{
struct net *net = dev_net(dev);
struct sk_buff *skb;
int err = -ENOBUFS;
+ u32 seq = 0;
skb = nlmsg_new(if_nlmsg_size(dev, 0), flags);
if (skb == NULL)
goto errout;
+ if (nlmsg_report(nlh))
+ seq = nlmsg_seq(nlh);
+ else
+ portid = 0;
+
err = rtnl_fill_ifinfo(skb, dev, dev_net(dev),
type, portid, seq, change, 0, 0, event,
new_nsid, new_ifindex, -1, flags);
@@ -3960,8 +4424,7 @@ struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev,
}
return skb;
errout:
- if (err < 0)
- rtnl_set_sk_err(net, RTNLGRP_LINK, err);
+ rtnl_set_sk_err(net, RTNLGRP_LINK, err);
return NULL;
}
@@ -3984,7 +4447,7 @@ static void rtmsg_ifinfo_event(int type, struct net_device *dev,
return;
skb = rtmsg_ifinfo_build_skb(type, dev, change, event, flags, new_nsid,
- new_ifindex, portid, nlmsg_seq(nlh));
+ new_ifindex, portid, nlh);
if (skb)
rtmsg_ifinfo_send(skb, dev, flags, portid, nlh);
}
@@ -4025,7 +4488,7 @@ static int nlmsg_populate_fdb_fill(struct sk_buff *skb,
ndm->ndm_ifindex = dev->ifindex;
ndm->ndm_state = ndm_state;
- if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
+ if (nla_put(skb, NDA_LLADDR, dev->addr_len, addr))
goto nla_put_failure;
if (vid)
if (nla_put(skb, NDA_VLAN, sizeof(u16), &vid))
@@ -4039,10 +4502,10 @@ nla_put_failure:
return -EMSGSIZE;
}
-static inline size_t rtnl_fdb_nlmsg_size(void)
+static inline size_t rtnl_fdb_nlmsg_size(const struct net_device *dev)
{
return NLMSG_ALIGN(sizeof(struct ndmsg)) +
- nla_total_size(ETH_ALEN) + /* NDA_LLADDR */
+ nla_total_size(dev->addr_len) + /* NDA_LLADDR */
nla_total_size(sizeof(u16)) + /* NDA_VLAN */
0;
}
@@ -4054,7 +4517,7 @@ static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type,
struct sk_buff *skb;
int err = -ENOBUFS;
- skb = nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC);
+ skb = nlmsg_new(rtnl_fdb_nlmsg_size(dev), GFP_ATOMIC);
if (!skb)
goto errout;
@@ -4186,9 +4649,10 @@ static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
netif_is_bridge_port(dev)) {
struct net_device *br_dev = netdev_master_upper_dev_get(dev);
const struct net_device_ops *ops = br_dev->netdev_ops;
+ bool notified = false;
err = ops->ndo_fdb_add(ndm, tb, dev, addr, vid,
- nlh->nlmsg_flags, extack);
+ nlh->nlmsg_flags, &notified, extack);
if (err)
goto out;
else
@@ -4197,16 +4661,18 @@ static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
/* Embedded bridge, macvlan, and any other device support */
if ((ndm->ndm_flags & NTF_SELF)) {
+ bool notified = false;
+
if (dev->netdev_ops->ndo_fdb_add)
err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr,
vid,
nlh->nlmsg_flags,
- extack);
+ &notified, extack);
else
err = ndo_dflt_fdb_add(ndm, tb, dev, addr, vid,
nlh->nlmsg_flags);
- if (!err) {
+ if (!err && !notified) {
rtnl_fdb_notify(dev, addr, vid, RTM_NEWNEIGH,
ndm->ndm_state);
ndm->ndm_flags &= ~NTF_SELF;
@@ -4243,13 +4709,6 @@ int ndo_dflt_fdb_del(struct ndmsg *ndm,
}
EXPORT_SYMBOL(ndo_dflt_fdb_del);
-static const struct nla_policy fdb_del_bulk_policy[NDA_MAX + 1] = {
- [NDA_VLAN] = { .type = NLA_U16 },
- [NDA_IFINDEX] = NLA_POLICY_MIN(NLA_S32, 1),
- [NDA_NDM_STATE_MASK] = { .type = NLA_U16 },
- [NDA_NDM_FLAGS_MASK] = { .type = NLA_U8 },
-};
-
static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
@@ -4263,15 +4722,14 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
int err;
u16 vid;
- if (!netlink_capable(skb, CAP_NET_ADMIN))
- return -EPERM;
-
if (!del_bulk) {
err = nlmsg_parse_deprecated(nlh, sizeof(*ndm), tb, NDA_MAX,
NULL, extack);
} else {
- err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX,
- fdb_del_bulk_policy, extack);
+ /* For bulk delete, the drivers will parse the message with
+ * policy.
+ */
+ err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL, extack);
}
if (err < 0)
return err;
@@ -4294,6 +4752,10 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
return -EINVAL;
}
addr = nla_data(tb[NDA_LLADDR]);
+
+ err = fdb_vid_parse(tb[NDA_VLAN], &vid, extack);
+ if (err)
+ return err;
}
if (dev->type != ARPHRD_ETHER) {
@@ -4301,25 +4763,22 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
return -EINVAL;
}
- err = fdb_vid_parse(tb[NDA_VLAN], &vid, extack);
- if (err)
- return err;
-
err = -EOPNOTSUPP;
/* Support fdb on master device the net/bridge default case */
if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) &&
netif_is_bridge_port(dev)) {
struct net_device *br_dev = netdev_master_upper_dev_get(dev);
+ bool notified = false;
ops = br_dev->netdev_ops;
if (!del_bulk) {
if (ops->ndo_fdb_del)
- err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid, extack);
+ err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid,
+ &notified, extack);
} else {
if (ops->ndo_fdb_del_bulk)
- err = ops->ndo_fdb_del_bulk(ndm, tb, dev, vid,
- extack);
+ err = ops->ndo_fdb_del_bulk(nlh, dev, extack);
}
if (err)
@@ -4330,22 +4789,24 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
/* Embedded bridge, macvlan, and any other device support */
if (ndm->ndm_flags & NTF_SELF) {
+ bool notified = false;
+
ops = dev->netdev_ops;
if (!del_bulk) {
if (ops->ndo_fdb_del)
- err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid, extack);
+ err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid,
+ &notified, extack);
else
err = ndo_dflt_fdb_del(ndm, tb, dev, addr, vid);
} else {
/* in case err was cleared by NTF_MASTER call */
err = -EOPNOTSUPP;
if (ops->ndo_fdb_del_bulk)
- err = ops->ndo_fdb_del_bulk(ndm, tb, dev, vid,
- extack);
+ err = ops->ndo_fdb_del_bulk(nlh, dev, extack);
}
if (!err) {
- if (!del_bulk)
+ if (!del_bulk && !notified)
rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH,
ndm->ndm_state);
ndm->ndm_flags &= ~NTF_SELF;
@@ -4361,15 +4822,16 @@ static int nlmsg_populate_fdb(struct sk_buff *skb,
int *idx,
struct netdev_hw_addr_list *list)
{
+ struct ndo_fdb_dump_context *ctx = (void *)cb->ctx;
struct netdev_hw_addr *ha;
- int err;
u32 portid, seq;
+ int err;
portid = NETLINK_CB(cb->skb).portid;
seq = cb->nlh->nlmsg_seq;
list_for_each_entry(ha, &list->list, list) {
- if (*idx < cb->args[2])
+ if (*idx < ctx->fdb_idx)
goto skip;
err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, 0,
@@ -4425,12 +4887,12 @@ static int valid_fdb_dump_strict(const struct nlmsghdr *nlh,
struct ndmsg *ndm;
int err, i;
- if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ndm))) {
+ ndm = nlmsg_payload(nlh, sizeof(*ndm));
+ if (!ndm) {
NL_SET_ERR_MSG(extack, "Invalid header for fdb dump request");
return -EINVAL;
}
- ndm = nlmsg_data(nlh);
if (ndm->ndm_pad1 || ndm->ndm_pad2 || ndm->ndm_state ||
ndm->ndm_flags || ndm->ndm_type) {
NL_SET_ERR_MSG(extack, "Invalid values in header for fdb dump request");
@@ -4508,18 +4970,16 @@ static int valid_fdb_dump_legacy(const struct nlmsghdr *nlh,
static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
{
- struct net_device *dev;
- struct net_device *br_dev = NULL;
- const struct net_device_ops *ops = NULL;
- const struct net_device_ops *cops = NULL;
+ const struct net_device_ops *ops = NULL, *cops = NULL;
+ struct ndo_fdb_dump_context *ctx = (void *)cb->ctx;
+ struct net_device *dev, *br_dev = NULL;
struct net *net = sock_net(skb->sk);
- struct hlist_head *head;
int brport_idx = 0;
int br_idx = 0;
- int h, s_h;
- int idx = 0, s_idx;
- int err = 0;
int fidx = 0;
+ int err;
+
+ NL_ASSERT_CTX_FITS(struct ndo_fdb_dump_context);
if (cb->strict_check)
err = valid_fdb_dump_strict(cb->nlh, &br_idx, &brport_idx,
@@ -4538,70 +4998,51 @@ static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
ops = br_dev->netdev_ops;
}
- s_h = cb->args[0];
- s_idx = cb->args[1];
-
- for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
- idx = 0;
- head = &net->dev_index_head[h];
- hlist_for_each_entry(dev, head, index_hlist) {
-
- if (brport_idx && (dev->ifindex != brport_idx))
- continue;
-
- if (!br_idx) { /* user did not specify a specific bridge */
- if (netif_is_bridge_port(dev)) {
- br_dev = netdev_master_upper_dev_get(dev);
- cops = br_dev->netdev_ops;
- }
- } else {
- if (dev != br_dev &&
- !netif_is_bridge_port(dev))
- continue;
+ for_each_netdev_dump(net, dev, ctx->ifindex) {
+ if (brport_idx && (dev->ifindex != brport_idx))
+ continue;
- if (br_dev != netdev_master_upper_dev_get(dev) &&
- !netif_is_bridge_master(dev))
- continue;
- cops = ops;
+ if (!br_idx) { /* user did not specify a specific bridge */
+ if (netif_is_bridge_port(dev)) {
+ br_dev = netdev_master_upper_dev_get(dev);
+ cops = br_dev->netdev_ops;
}
+ } else {
+ if (dev != br_dev &&
+ !netif_is_bridge_port(dev))
+ continue;
- if (idx < s_idx)
- goto cont;
+ if (br_dev != netdev_master_upper_dev_get(dev) &&
+ !netif_is_bridge_master(dev))
+ continue;
+ cops = ops;
+ }
- if (netif_is_bridge_port(dev)) {
- if (cops && cops->ndo_fdb_dump) {
- err = cops->ndo_fdb_dump(skb, cb,
- br_dev, dev,
- &fidx);
- if (err == -EMSGSIZE)
- goto out;
- }
+ if (netif_is_bridge_port(dev)) {
+ if (cops && cops->ndo_fdb_dump) {
+ err = cops->ndo_fdb_dump(skb, cb, br_dev, dev,
+ &fidx);
+ if (err == -EMSGSIZE)
+ break;
}
+ }
- if (dev->netdev_ops->ndo_fdb_dump)
- err = dev->netdev_ops->ndo_fdb_dump(skb, cb,
- dev, NULL,
- &fidx);
- else
- err = ndo_dflt_fdb_dump(skb, cb, dev, NULL,
- &fidx);
- if (err == -EMSGSIZE)
- goto out;
+ if (dev->netdev_ops->ndo_fdb_dump)
+ err = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, NULL,
+ &fidx);
+ else
+ err = ndo_dflt_fdb_dump(skb, cb, dev, NULL, &fidx);
+ if (err == -EMSGSIZE)
+ break;
- cops = NULL;
+ cops = NULL;
- /* reset fdb offset to 0 for rest of the interfaces */
- cb->args[2] = 0;
- fidx = 0;
-cont:
- idx++;
- }
+ /* reset fdb offset to 0 for rest of the interfaces */
+ ctx->fdb_idx = 0;
+ fidx = 0;
}
-out:
- cb->args[0] = h;
- cb->args[1] = idx;
- cb->args[2] = fidx;
+ ctx->fdb_idx = fidx;
return skb->len;
}
@@ -4614,12 +5055,12 @@ static int valid_fdb_get_strict(const struct nlmsghdr *nlh,
struct ndmsg *ndm;
int err, i;
- if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ndm))) {
+ ndm = nlmsg_payload(nlh, sizeof(*ndm));
+ if (!ndm) {
NL_SET_ERR_MSG(extack, "Invalid header for fdb get request");
return -EINVAL;
}
- ndm = nlmsg_data(nlh);
if (ndm->ndm_pad1 || ndm->ndm_pad2 || ndm->ndm_state ||
ndm->ndm_type) {
NL_SET_ERR_MSG(extack, "Invalid values in header for fdb get request");
@@ -4798,7 +5239,7 @@ int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
ifm->__ifi_pad = 0;
ifm->ifi_type = dev->type;
ifm->ifi_index = dev->ifindex;
- ifm->ifi_flags = dev_get_flags(dev);
+ ifm->ifi_flags = netif_get_flags(dev);
ifm->ifi_change = 0;
@@ -4886,12 +5327,12 @@ static int valid_bridge_getlink_req(const struct nlmsghdr *nlh,
if (strict_check) {
struct ifinfomsg *ifm;
- if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifm))) {
+ ifm = nlmsg_payload(nlh, sizeof(*ifm));
+ if (!ifm) {
NL_SET_ERR_MSG(extack, "Invalid header for bridge link dump");
return -EINVAL;
}
- ifm = nlmsg_data(nlh);
if (ifm->__ifi_pad || ifm->ifi_type || ifm->ifi_flags ||
ifm->ifi_change || ifm->ifi_index) {
NL_SET_ERR_MSG(extack, "Invalid values in header for bridge link dump request");
@@ -5047,10 +5488,9 @@ static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh,
struct net *net = sock_net(skb->sk);
struct ifinfomsg *ifm;
struct net_device *dev;
- struct nlattr *br_spec, *attr = NULL;
+ struct nlattr *br_spec, *attr, *br_flags_attr = NULL;
int rem, err = -EOPNOTSUPP;
u16 flags = 0;
- bool have_flags = false;
if (nlmsg_len(nlh) < sizeof(*ifm))
return -EINVAL;
@@ -5068,13 +5508,17 @@ static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh,
br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
if (br_spec) {
nla_for_each_nested(attr, br_spec, rem) {
- if (nla_type(attr) == IFLA_BRIDGE_FLAGS) {
+ if (nla_type(attr) == IFLA_BRIDGE_FLAGS && !br_flags_attr) {
if (nla_len(attr) < sizeof(flags))
return -EINVAL;
- have_flags = true;
+ br_flags_attr = attr;
flags = nla_get_u16(attr);
- break;
+ }
+
+ if (nla_type(attr) == IFLA_BRIDGE_MODE) {
+ if (nla_len(attr) < sizeof(u16))
+ return -EINVAL;
}
}
}
@@ -5112,8 +5556,8 @@ static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh,
}
}
- if (have_flags)
- memcpy(nla_data(attr), &flags, sizeof(flags));
+ if (br_flags_attr)
+ memcpy(nla_data(br_flags_attr), &flags, sizeof(flags));
out:
return err;
}
@@ -5144,15 +5588,14 @@ static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh,
br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
if (br_spec) {
- nla_for_each_nested(attr, br_spec, rem) {
- if (nla_type(attr) == IFLA_BRIDGE_FLAGS) {
- if (nla_len(attr) < sizeof(flags))
- return -EINVAL;
+ nla_for_each_nested_type(attr, IFLA_BRIDGE_FLAGS, br_spec,
+ rem) {
+ if (nla_len(attr) < sizeof(flags))
+ return -EINVAL;
- have_flags = true;
- flags = nla_get_u16(attr);
- break;
- }
+ have_flags = true;
+ flags = nla_get_u16(attr);
+ break;
}
}
@@ -5411,13 +5854,11 @@ static unsigned int
rtnl_offload_xstats_get_size_hw_s_info_one(const struct net_device *dev,
enum netdev_offload_xstats_type type)
{
- bool enabled = netdev_offload_xstats_enabled(dev, type);
-
return nla_total_size(0) +
/* IFLA_OFFLOAD_XSTATS_HW_S_INFO_REQUEST */
nla_total_size(sizeof(u8)) +
/* IFLA_OFFLOAD_XSTATS_HW_S_INFO_USED */
- (enabled ? nla_total_size(sizeof(u8)) : 0) +
+ nla_total_size(sizeof(u8)) +
0;
}
@@ -5783,7 +6224,8 @@ static int rtnl_valid_stats_req(const struct nlmsghdr *nlh, bool strict_check,
{
struct if_stats_msg *ifsm;
- if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifsm))) {
+ ifsm = nlmsg_payload(nlh, sizeof(*ifsm));
+ if (!ifsm) {
NL_SET_ERR_MSG(extack, "Invalid header for stats dump");
return -EINVAL;
}
@@ -5791,8 +6233,6 @@ static int rtnl_valid_stats_req(const struct nlmsghdr *nlh, bool strict_check,
if (!strict_check)
return 0;
- ifsm = nlmsg_data(nlh);
-
/* only requests using strict checks can pass data to influence
* the dump. The legacy exception is filter_mask.
*/
@@ -5863,19 +6303,17 @@ static int rtnl_stats_get(struct sk_buff *skb, struct nlmsghdr *nlh,
static int rtnl_stats_dump(struct sk_buff *skb, struct netlink_callback *cb)
{
struct netlink_ext_ack *extack = cb->extack;
- int h, s_h, err, s_idx, s_idxattr, s_prividx;
struct rtnl_stats_dump_filters filters;
struct net *net = sock_net(skb->sk);
unsigned int flags = NLM_F_MULTI;
struct if_stats_msg *ifsm;
- struct hlist_head *head;
+ struct {
+ unsigned long ifindex;
+ int idxattr;
+ int prividx;
+ } *ctx = (void *)cb->ctx;
struct net_device *dev;
- int idx = 0;
-
- s_h = cb->args[0];
- s_idx = cb->args[1];
- s_idxattr = cb->args[2];
- s_prividx = cb->args[3];
+ int err;
cb->seq = net->dev_base_seq;
@@ -5894,39 +6332,26 @@ static int rtnl_stats_dump(struct sk_buff *skb, struct netlink_callback *cb)
if (err)
return err;
- for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
- idx = 0;
- head = &net->dev_index_head[h];
- hlist_for_each_entry(dev, head, index_hlist) {
- if (idx < s_idx)
- goto cont;
- err = rtnl_fill_statsinfo(skb, dev, RTM_NEWSTATS,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq, 0,
- flags, &filters,
- &s_idxattr, &s_prividx,
- extack);
- /* If we ran out of room on the first message,
- * we're in trouble
- */
- WARN_ON((err == -EMSGSIZE) && (skb->len == 0));
+ for_each_netdev_dump(net, dev, ctx->ifindex) {
+ err = rtnl_fill_statsinfo(skb, dev, RTM_NEWSTATS,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq, 0,
+ flags, &filters,
+ &ctx->idxattr, &ctx->prividx,
+ extack);
+ /* If we ran out of room on the first message,
+ * we're in trouble.
+ */
+ WARN_ON((err == -EMSGSIZE) && (skb->len == 0));
- if (err < 0)
- goto out;
- s_prividx = 0;
- s_idxattr = 0;
- nl_dump_check_consistent(cb, nlmsg_hdr(skb));
-cont:
- idx++;
- }
+ if (err < 0)
+ break;
+ ctx->prividx = 0;
+ ctx->idxattr = 0;
+ nl_dump_check_consistent(cb, nlmsg_hdr(skb));
}
-out:
- cb->args[3] = s_prividx;
- cb->args[2] = s_idxattr;
- cb->args[1] = idx;
- cb->args[0] = h;
- return skb->len;
+ return err;
}
void rtnl_offload_xstats_notify(struct net_device *dev)
@@ -6030,8 +6455,407 @@ static int rtnl_stats_set(struct sk_buff *skb, struct nlmsghdr *nlh,
return 0;
}
+static int rtnl_mdb_valid_dump_req(const struct nlmsghdr *nlh,
+ struct netlink_ext_ack *extack)
+{
+ struct br_port_msg *bpm;
+
+ bpm = nlmsg_payload(nlh, sizeof(*bpm));
+ if (!bpm) {
+ NL_SET_ERR_MSG(extack, "Invalid header for mdb dump request");
+ return -EINVAL;
+ }
+
+ if (bpm->ifindex) {
+ NL_SET_ERR_MSG(extack, "Filtering by device index is not supported for mdb dump request");
+ return -EINVAL;
+ }
+ if (nlmsg_attrlen(nlh, sizeof(*bpm))) {
+ NL_SET_ERR_MSG(extack, "Invalid data after header in mdb dump request");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+struct rtnl_mdb_dump_ctx {
+ long idx;
+};
+
+static int rtnl_mdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ struct rtnl_mdb_dump_ctx *ctx = (void *)cb->ctx;
+ struct net *net = sock_net(skb->sk);
+ struct net_device *dev;
+ int idx, s_idx;
+ int err;
+
+ NL_ASSERT_CTX_FITS(struct rtnl_mdb_dump_ctx);
+
+ if (cb->strict_check) {
+ err = rtnl_mdb_valid_dump_req(cb->nlh, cb->extack);
+ if (err)
+ return err;
+ }
+
+ s_idx = ctx->idx;
+ idx = 0;
+
+ for_each_netdev(net, dev) {
+ if (idx < s_idx)
+ goto skip;
+ if (!dev->netdev_ops->ndo_mdb_dump)
+ goto skip;
+
+ err = dev->netdev_ops->ndo_mdb_dump(dev, skb, cb);
+ if (err == -EMSGSIZE)
+ goto out;
+ /* Moving on to next device, reset markers and sequence
+ * counters since they are all maintained per-device.
+ */
+ memset(cb->ctx, 0, sizeof(cb->ctx));
+ cb->prev_seq = 0;
+ cb->seq = 0;
+skip:
+ idx++;
+ }
+
+out:
+ ctx->idx = idx;
+ return skb->len;
+}
+
+static int rtnl_validate_mdb_entry_get(const struct nlattr *attr,
+ struct netlink_ext_ack *extack)
+{
+ struct br_mdb_entry *entry = nla_data(attr);
+
+ if (nla_len(attr) != sizeof(struct br_mdb_entry)) {
+ NL_SET_ERR_MSG_ATTR(extack, attr, "Invalid attribute length");
+ return -EINVAL;
+ }
+
+ if (entry->ifindex) {
+ NL_SET_ERR_MSG(extack, "Entry ifindex cannot be specified");
+ return -EINVAL;
+ }
+
+ if (entry->state) {
+ NL_SET_ERR_MSG(extack, "Entry state cannot be specified");
+ return -EINVAL;
+ }
+
+ if (entry->flags) {
+ NL_SET_ERR_MSG(extack, "Entry flags cannot be specified");
+ return -EINVAL;
+ }
+
+ if (entry->vid >= VLAN_VID_MASK) {
+ NL_SET_ERR_MSG(extack, "Invalid entry VLAN id");
+ return -EINVAL;
+ }
+
+ if (entry->addr.proto != htons(ETH_P_IP) &&
+ entry->addr.proto != htons(ETH_P_IPV6) &&
+ entry->addr.proto != 0) {
+ NL_SET_ERR_MSG(extack, "Unknown entry protocol");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct nla_policy mdba_get_policy[MDBA_GET_ENTRY_MAX + 1] = {
+ [MDBA_GET_ENTRY] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
+ rtnl_validate_mdb_entry_get,
+ sizeof(struct br_mdb_entry)),
+ [MDBA_GET_ENTRY_ATTRS] = { .type = NLA_NESTED },
+};
+
+static int rtnl_mdb_get(struct sk_buff *in_skb, struct nlmsghdr *nlh,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *tb[MDBA_GET_ENTRY_MAX + 1];
+ struct net *net = sock_net(in_skb->sk);
+ struct br_port_msg *bpm;
+ struct net_device *dev;
+ int err;
+
+ err = nlmsg_parse(nlh, sizeof(struct br_port_msg), tb,
+ MDBA_GET_ENTRY_MAX, mdba_get_policy, extack);
+ if (err)
+ return err;
+
+ bpm = nlmsg_data(nlh);
+ if (!bpm->ifindex) {
+ NL_SET_ERR_MSG(extack, "Invalid ifindex");
+ return -EINVAL;
+ }
+
+ dev = __dev_get_by_index(net, bpm->ifindex);
+ if (!dev) {
+ NL_SET_ERR_MSG(extack, "Device doesn't exist");
+ return -ENODEV;
+ }
+
+ if (NL_REQ_ATTR_CHECK(extack, NULL, tb, MDBA_GET_ENTRY)) {
+ NL_SET_ERR_MSG(extack, "Missing MDBA_GET_ENTRY attribute");
+ return -EINVAL;
+ }
+
+ if (!dev->netdev_ops->ndo_mdb_get) {
+ NL_SET_ERR_MSG(extack, "Device does not support MDB operations");
+ return -EOPNOTSUPP;
+ }
+
+ return dev->netdev_ops->ndo_mdb_get(dev, tb, NETLINK_CB(in_skb).portid,
+ nlh->nlmsg_seq, extack);
+}
+
+static int rtnl_validate_mdb_entry(const struct nlattr *attr,
+ struct netlink_ext_ack *extack)
+{
+ struct br_mdb_entry *entry = nla_data(attr);
+
+ if (nla_len(attr) != sizeof(struct br_mdb_entry)) {
+ NL_SET_ERR_MSG_ATTR(extack, attr, "Invalid attribute length");
+ return -EINVAL;
+ }
+
+ if (entry->ifindex == 0) {
+ NL_SET_ERR_MSG(extack, "Zero entry ifindex is not allowed");
+ return -EINVAL;
+ }
+
+ if (entry->addr.proto == htons(ETH_P_IP)) {
+ if (!ipv4_is_multicast(entry->addr.u.ip4) &&
+ !ipv4_is_zeronet(entry->addr.u.ip4)) {
+ NL_SET_ERR_MSG(extack, "IPv4 entry group address is not multicast or 0.0.0.0");
+ return -EINVAL;
+ }
+ if (ipv4_is_local_multicast(entry->addr.u.ip4)) {
+ NL_SET_ERR_MSG(extack, "IPv4 entry group address is local multicast");
+ return -EINVAL;
+ }
+#if IS_ENABLED(CONFIG_IPV6)
+ } else if (entry->addr.proto == htons(ETH_P_IPV6)) {
+ if (ipv6_addr_is_ll_all_nodes(&entry->addr.u.ip6)) {
+ NL_SET_ERR_MSG(extack, "IPv6 entry group address is link-local all nodes");
+ return -EINVAL;
+ }
+#endif
+ } else if (entry->addr.proto == 0) {
+ /* L2 mdb */
+ if (!is_multicast_ether_addr(entry->addr.u.mac_addr)) {
+ NL_SET_ERR_MSG(extack, "L2 entry group is not multicast");
+ return -EINVAL;
+ }
+ } else {
+ NL_SET_ERR_MSG(extack, "Unknown entry protocol");
+ return -EINVAL;
+ }
+
+ if (entry->state != MDB_PERMANENT && entry->state != MDB_TEMPORARY) {
+ NL_SET_ERR_MSG(extack, "Unknown entry state");
+ return -EINVAL;
+ }
+ if (entry->vid >= VLAN_VID_MASK) {
+ NL_SET_ERR_MSG(extack, "Invalid entry VLAN id");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct nla_policy mdba_policy[MDBA_SET_ENTRY_MAX + 1] = {
+ [MDBA_SET_ENTRY_UNSPEC] = { .strict_start_type = MDBA_SET_ENTRY_ATTRS + 1 },
+ [MDBA_SET_ENTRY] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
+ rtnl_validate_mdb_entry,
+ sizeof(struct br_mdb_entry)),
+ [MDBA_SET_ENTRY_ATTRS] = { .type = NLA_NESTED },
+};
+
+static int rtnl_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *tb[MDBA_SET_ENTRY_MAX + 1];
+ struct net *net = sock_net(skb->sk);
+ struct br_port_msg *bpm;
+ struct net_device *dev;
+ int err;
+
+ err = nlmsg_parse_deprecated(nlh, sizeof(*bpm), tb,
+ MDBA_SET_ENTRY_MAX, mdba_policy, extack);
+ if (err)
+ return err;
+
+ bpm = nlmsg_data(nlh);
+ if (!bpm->ifindex) {
+ NL_SET_ERR_MSG(extack, "Invalid ifindex");
+ return -EINVAL;
+ }
+
+ dev = __dev_get_by_index(net, bpm->ifindex);
+ if (!dev) {
+ NL_SET_ERR_MSG(extack, "Device doesn't exist");
+ return -ENODEV;
+ }
+
+ if (NL_REQ_ATTR_CHECK(extack, NULL, tb, MDBA_SET_ENTRY)) {
+ NL_SET_ERR_MSG(extack, "Missing MDBA_SET_ENTRY attribute");
+ return -EINVAL;
+ }
+
+ if (!dev->netdev_ops->ndo_mdb_add) {
+ NL_SET_ERR_MSG(extack, "Device does not support MDB operations");
+ return -EOPNOTSUPP;
+ }
+
+ return dev->netdev_ops->ndo_mdb_add(dev, tb, nlh->nlmsg_flags, extack);
+}
+
+static int rtnl_validate_mdb_entry_del_bulk(const struct nlattr *attr,
+ struct netlink_ext_ack *extack)
+{
+ struct br_mdb_entry *entry = nla_data(attr);
+ struct br_mdb_entry zero_entry = {};
+
+ if (nla_len(attr) != sizeof(struct br_mdb_entry)) {
+ NL_SET_ERR_MSG_ATTR(extack, attr, "Invalid attribute length");
+ return -EINVAL;
+ }
+
+ if (entry->state != MDB_PERMANENT && entry->state != MDB_TEMPORARY) {
+ NL_SET_ERR_MSG(extack, "Unknown entry state");
+ return -EINVAL;
+ }
+
+ if (entry->flags) {
+ NL_SET_ERR_MSG(extack, "Entry flags cannot be set");
+ return -EINVAL;
+ }
+
+ if (entry->vid >= VLAN_N_VID - 1) {
+ NL_SET_ERR_MSG(extack, "Invalid entry VLAN id");
+ return -EINVAL;
+ }
+
+ if (memcmp(&entry->addr, &zero_entry.addr, sizeof(entry->addr))) {
+ NL_SET_ERR_MSG(extack, "Entry address cannot be set");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct nla_policy mdba_del_bulk_policy[MDBA_SET_ENTRY_MAX + 1] = {
+ [MDBA_SET_ENTRY] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
+ rtnl_validate_mdb_entry_del_bulk,
+ sizeof(struct br_mdb_entry)),
+ [MDBA_SET_ENTRY_ATTRS] = { .type = NLA_NESTED },
+};
+
+static int rtnl_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
+ struct netlink_ext_ack *extack)
+{
+ bool del_bulk = !!(nlh->nlmsg_flags & NLM_F_BULK);
+ struct nlattr *tb[MDBA_SET_ENTRY_MAX + 1];
+ struct net *net = sock_net(skb->sk);
+ struct br_port_msg *bpm;
+ struct net_device *dev;
+ int err;
+
+ if (!del_bulk)
+ err = nlmsg_parse_deprecated(nlh, sizeof(*bpm), tb,
+ MDBA_SET_ENTRY_MAX, mdba_policy,
+ extack);
+ else
+ err = nlmsg_parse(nlh, sizeof(*bpm), tb, MDBA_SET_ENTRY_MAX,
+ mdba_del_bulk_policy, extack);
+ if (err)
+ return err;
+
+ bpm = nlmsg_data(nlh);
+ if (!bpm->ifindex) {
+ NL_SET_ERR_MSG(extack, "Invalid ifindex");
+ return -EINVAL;
+ }
+
+ dev = __dev_get_by_index(net, bpm->ifindex);
+ if (!dev) {
+ NL_SET_ERR_MSG(extack, "Device doesn't exist");
+ return -ENODEV;
+ }
+
+ if (NL_REQ_ATTR_CHECK(extack, NULL, tb, MDBA_SET_ENTRY)) {
+ NL_SET_ERR_MSG(extack, "Missing MDBA_SET_ENTRY attribute");
+ return -EINVAL;
+ }
+
+ if (del_bulk) {
+ if (!dev->netdev_ops->ndo_mdb_del_bulk) {
+ NL_SET_ERR_MSG(extack, "Device does not support MDB bulk deletion");
+ return -EOPNOTSUPP;
+ }
+ return dev->netdev_ops->ndo_mdb_del_bulk(dev, tb, extack);
+ }
+
+ if (!dev->netdev_ops->ndo_mdb_del) {
+ NL_SET_ERR_MSG(extack, "Device does not support MDB operations");
+ return -EOPNOTSUPP;
+ }
+
+ return dev->netdev_ops->ndo_mdb_del(dev, tb, extack);
+}
+
/* Process one rtnetlink message. */
+static int rtnl_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ const bool needs_lock = !(cb->flags & RTNL_FLAG_DUMP_UNLOCKED);
+ rtnl_dumpit_func dumpit = cb->data;
+ int err;
+
+ /* Previous iteration have already finished, avoid calling->dumpit()
+ * again, it may not expect to be called after it reached the end.
+ */
+ if (!dumpit)
+ return 0;
+
+ if (needs_lock)
+ rtnl_lock();
+ err = dumpit(skb, cb);
+ if (needs_lock)
+ rtnl_unlock();
+
+ /* Old dump handlers used to send NLM_DONE as in a separate recvmsg().
+ * Some applications which parse netlink manually depend on this.
+ */
+ if (cb->flags & RTNL_FLAG_DUMP_SPLIT_NLM_DONE) {
+ if (err < 0 && err != -EMSGSIZE)
+ return err;
+ if (!err)
+ cb->data = NULL;
+
+ return skb->len;
+ }
+ return err;
+}
+
+static int rtnetlink_dump_start(struct sock *ssk, struct sk_buff *skb,
+ const struct nlmsghdr *nlh,
+ struct netlink_dump_control *control)
+{
+ if (control->flags & RTNL_FLAG_DUMP_SPLIT_NLM_DONE ||
+ !(control->flags & RTNL_FLAG_DUMP_UNLOCKED)) {
+ WARN_ON(control->data);
+ control->data = control->dump;
+ control->dump = rtnl_dumpit;
+ }
+
+ return netlink_dump_start(ssk, skb, nlh, control);
+}
+
static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
@@ -6076,6 +6900,7 @@ static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh,
}
owner = link->owner;
dumpit = link->dumpit;
+ flags = link->flags;
if (type == RTM_GETLINK - RTM_BASE)
min_dump_alloc = rtnl_calcit(skb, nlh);
@@ -6093,8 +6918,9 @@ static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh,
.dump = dumpit,
.min_dump_alloc = min_dump_alloc,
.module = owner,
+ .flags = flags,
};
- err = netlink_dump_start(rtnl, skb, nlh, &c);
+ err = rtnetlink_dump_start(rtnl, skb, nlh, &c);
/* netlink_dump_start() will keep a reference on
* module if dump is still in progress.
*/
@@ -6209,7 +7035,6 @@ static int __net_init rtnetlink_net_init(struct net *net)
struct netlink_kernel_cfg cfg = {
.groups = RTNLGRP_MAX,
.input = rtnetlink_rcv,
- .cb_mutex = &rtnl_mutex,
.flags = NL_CFG_F_NONROOT_RECV,
.bind = rtnetlink_bind,
};
@@ -6232,6 +7057,41 @@ static struct pernet_operations rtnetlink_net_ops = {
.exit = rtnetlink_net_exit,
};
+static const struct rtnl_msg_handler rtnetlink_rtnl_msg_handlers[] __initconst = {
+ {.msgtype = RTM_NEWLINK, .doit = rtnl_newlink,
+ .flags = RTNL_FLAG_DOIT_PERNET},
+ {.msgtype = RTM_DELLINK, .doit = rtnl_dellink,
+ .flags = RTNL_FLAG_DOIT_PERNET_WIP},
+ {.msgtype = RTM_GETLINK, .doit = rtnl_getlink,
+ .dumpit = rtnl_dump_ifinfo, .flags = RTNL_FLAG_DUMP_SPLIT_NLM_DONE},
+ {.msgtype = RTM_SETLINK, .doit = rtnl_setlink,
+ .flags = RTNL_FLAG_DOIT_PERNET_WIP},
+ {.msgtype = RTM_GETADDR, .dumpit = rtnl_dump_all},
+ {.msgtype = RTM_GETROUTE, .dumpit = rtnl_dump_all},
+ {.msgtype = RTM_GETNETCONF, .dumpit = rtnl_dump_all},
+ {.msgtype = RTM_GETSTATS, .doit = rtnl_stats_get,
+ .dumpit = rtnl_stats_dump},
+ {.msgtype = RTM_SETSTATS, .doit = rtnl_stats_set},
+ {.msgtype = RTM_NEWLINKPROP, .doit = rtnl_newlinkprop},
+ {.msgtype = RTM_DELLINKPROP, .doit = rtnl_dellinkprop},
+ {.protocol = PF_BRIDGE, .msgtype = RTM_GETLINK,
+ .dumpit = rtnl_bridge_getlink},
+ {.protocol = PF_BRIDGE, .msgtype = RTM_DELLINK,
+ .doit = rtnl_bridge_dellink},
+ {.protocol = PF_BRIDGE, .msgtype = RTM_SETLINK,
+ .doit = rtnl_bridge_setlink},
+ {.protocol = PF_BRIDGE, .msgtype = RTM_NEWNEIGH, .doit = rtnl_fdb_add},
+ {.protocol = PF_BRIDGE, .msgtype = RTM_DELNEIGH, .doit = rtnl_fdb_del,
+ .flags = RTNL_FLAG_BULK_DEL_SUPPORTED},
+ {.protocol = PF_BRIDGE, .msgtype = RTM_GETNEIGH, .doit = rtnl_fdb_get,
+ .dumpit = rtnl_fdb_dump},
+ {.protocol = PF_BRIDGE, .msgtype = RTM_NEWMDB, .doit = rtnl_mdb_add},
+ {.protocol = PF_BRIDGE, .msgtype = RTM_DELMDB, .doit = rtnl_mdb_del,
+ .flags = RTNL_FLAG_BULK_DEL_SUPPORTED},
+ {.protocol = PF_BRIDGE, .msgtype = RTM_GETMDB, .doit = rtnl_mdb_get,
+ .dumpit = rtnl_mdb_dump},
+};
+
void __init rtnetlink_init(void)
{
if (register_pernet_subsys(&rtnetlink_net_ops))
@@ -6239,29 +7099,5 @@ void __init rtnetlink_init(void)
register_netdevice_notifier(&rtnetlink_dev_notifier);
- rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink,
- rtnl_dump_ifinfo, 0);
- rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, 0);
- rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, 0);
- rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, 0);
-
- rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, 0);
- rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, 0);
- rtnl_register(PF_UNSPEC, RTM_GETNETCONF, NULL, rtnl_dump_all, 0);
-
- rtnl_register(PF_UNSPEC, RTM_NEWLINKPROP, rtnl_newlinkprop, NULL, 0);
- rtnl_register(PF_UNSPEC, RTM_DELLINKPROP, rtnl_dellinkprop, NULL, 0);
-
- rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, 0);
- rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL,
- RTNL_FLAG_BULK_DEL_SUPPORTED);
- rtnl_register(PF_BRIDGE, RTM_GETNEIGH, rtnl_fdb_get, rtnl_fdb_dump, 0);
-
- rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, 0);
- rtnl_register(PF_BRIDGE, RTM_DELLINK, rtnl_bridge_dellink, NULL, 0);
- rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, 0);
-
- rtnl_register(PF_UNSPEC, RTM_GETSTATS, rtnl_stats_get, rtnl_stats_dump,
- 0);
- rtnl_register(PF_UNSPEC, RTM_SETSTATS, rtnl_stats_set, NULL, 0);
+ rtnl_register_many(rtnetlink_rtnl_msg_handlers);
}
generated by cgit (git 2.34.1) at 2025-12-21 18:37:27 +0000