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-rw-r--r--include/linux/inetdevice.h188
1 files changed, 110 insertions, 78 deletions
diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h
index b99cd23f3474..5730ba6b1cfa 100644
--- a/include/linux/inetdevice.h
+++ b/include/linux/inetdevice.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_INETDEVICE_H
#define _LINUX_INETDEVICE_H
@@ -5,44 +6,13 @@
#include <linux/bitmap.h>
#include <linux/if.h>
+#include <linux/ip.h>
#include <linux/netdevice.h>
#include <linux/rcupdate.h>
#include <linux/timer.h>
#include <linux/sysctl.h>
#include <linux/rtnetlink.h>
-
-enum
-{
- IPV4_DEVCONF_FORWARDING=1,
- IPV4_DEVCONF_MC_FORWARDING,
- IPV4_DEVCONF_PROXY_ARP,
- IPV4_DEVCONF_ACCEPT_REDIRECTS,
- IPV4_DEVCONF_SECURE_REDIRECTS,
- IPV4_DEVCONF_SEND_REDIRECTS,
- IPV4_DEVCONF_SHARED_MEDIA,
- IPV4_DEVCONF_RP_FILTER,
- IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE,
- IPV4_DEVCONF_BOOTP_RELAY,
- IPV4_DEVCONF_LOG_MARTIANS,
- IPV4_DEVCONF_TAG,
- IPV4_DEVCONF_ARPFILTER,
- IPV4_DEVCONF_MEDIUM_ID,
- IPV4_DEVCONF_NOXFRM,
- IPV4_DEVCONF_NOPOLICY,
- IPV4_DEVCONF_FORCE_IGMP_VERSION,
- IPV4_DEVCONF_ARP_ANNOUNCE,
- IPV4_DEVCONF_ARP_IGNORE,
- IPV4_DEVCONF_PROMOTE_SECONDARIES,
- IPV4_DEVCONF_ARP_ACCEPT,
- IPV4_DEVCONF_ARP_NOTIFY,
- IPV4_DEVCONF_ACCEPT_LOCAL,
- IPV4_DEVCONF_SRC_VMARK,
- IPV4_DEVCONF_PROXY_ARP_PVLAN,
- IPV4_DEVCONF_ROUTE_LOCALNET,
- __IPV4_DEVCONF_MAX
-};
-
-#define IPV4_DEVCONF_MAX (__IPV4_DEVCONF_MAX - 1)
+#include <linux/refcount.h>
struct ipv4_devconf {
void *sysctl;
@@ -54,9 +24,11 @@ struct ipv4_devconf {
struct in_device {
struct net_device *dev;
- atomic_t refcnt;
+ netdevice_tracker dev_tracker;
+
+ refcount_t refcnt;
int dead;
- struct in_ifaddr *ifa_list; /* IP ifaddr chain */
+ struct in_ifaddr __rcu *ifa_list;/* IP ifaddr chain */
struct ip_mc_list __rcu *mc_list; /* IP multicast filter chain */
struct ip_mc_list __rcu * __rcu *mc_hash;
@@ -67,9 +39,11 @@ struct in_device {
unsigned long mr_v1_seen;
unsigned long mr_v2_seen;
unsigned long mr_maxdelay;
- unsigned char mr_qrv;
+ unsigned long mr_qi; /* Query Interval */
+ unsigned long mr_qri; /* Query Response Interval */
+ unsigned char mr_qrv; /* Query Robustness Variable */
unsigned char mr_gq_running;
- unsigned char mr_ifc_count;
+ u32 mr_ifc_count;
struct timer_list mr_gq_timer; /* general query timer */
struct timer_list mr_ifc_timer; /* interface change timer */
@@ -79,13 +53,15 @@ struct in_device {
};
#define IPV4_DEVCONF(cnf, attr) ((cnf).data[IPV4_DEVCONF_ ## attr - 1])
+#define IPV4_DEVCONF_RO(cnf, attr) READ_ONCE(IPV4_DEVCONF(cnf, attr))
#define IPV4_DEVCONF_ALL(net, attr) \
IPV4_DEVCONF((*(net)->ipv4.devconf_all), attr)
+#define IPV4_DEVCONF_ALL_RO(net, attr) READ_ONCE(IPV4_DEVCONF_ALL(net, attr))
-static inline int ipv4_devconf_get(struct in_device *in_dev, int index)
+static inline int ipv4_devconf_get(const struct in_device *in_dev, int index)
{
index--;
- return in_dev->cnf.data[index];
+ return READ_ONCE(in_dev->cnf.data[index]);
}
static inline void ipv4_devconf_set(struct in_device *in_dev, int index,
@@ -93,7 +69,7 @@ static inline void ipv4_devconf_set(struct in_device *in_dev, int index,
{
index--;
set_bit(index, in_dev->cnf.state);
- in_dev->cnf.data[index] = val;
+ WRITE_ONCE(in_dev->cnf.data[index], val);
}
static inline void ipv4_devconf_setall(struct in_device *in_dev)
@@ -107,22 +83,23 @@ static inline void ipv4_devconf_setall(struct in_device *in_dev)
ipv4_devconf_set((in_dev), IPV4_DEVCONF_ ## attr, (val))
#define IN_DEV_ANDCONF(in_dev, attr) \
- (IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr) && \
+ (IPV4_DEVCONF_ALL_RO(dev_net(in_dev->dev), attr) && \
IN_DEV_CONF_GET((in_dev), attr))
#define IN_DEV_NET_ORCONF(in_dev, net, attr) \
- (IPV4_DEVCONF_ALL(net, attr) || \
+ (IPV4_DEVCONF_ALL_RO(net, attr) || \
IN_DEV_CONF_GET((in_dev), attr))
#define IN_DEV_ORCONF(in_dev, attr) \
IN_DEV_NET_ORCONF(in_dev, dev_net(in_dev->dev), attr)
#define IN_DEV_MAXCONF(in_dev, attr) \
- (max(IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr), \
+ (max(IPV4_DEVCONF_ALL_RO(dev_net(in_dev->dev), attr), \
IN_DEV_CONF_GET((in_dev), attr)))
#define IN_DEV_FORWARD(in_dev) IN_DEV_CONF_GET((in_dev), FORWARDING)
#define IN_DEV_MFORWARD(in_dev) IN_DEV_ANDCONF((in_dev), MC_FORWARDING)
+#define IN_DEV_BFORWARD(in_dev) IN_DEV_ANDCONF((in_dev), BC_FORWARDING)
#define IN_DEV_RPFILTER(in_dev) IN_DEV_MAXCONF((in_dev), RP_FILTER)
#define IN_DEV_SRC_VMARK(in_dev) IN_DEV_ORCONF((in_dev), SRC_VMARK)
#define IN_DEV_SOURCE_ROUTE(in_dev) IN_DEV_ANDCONF((in_dev), \
@@ -132,7 +109,7 @@ static inline void ipv4_devconf_setall(struct in_device *in_dev)
#define IN_DEV_LOG_MARTIANS(in_dev) IN_DEV_ORCONF((in_dev), LOG_MARTIANS)
#define IN_DEV_PROXY_ARP(in_dev) IN_DEV_ORCONF((in_dev), PROXY_ARP)
-#define IN_DEV_PROXY_ARP_PVLAN(in_dev) IN_DEV_CONF_GET(in_dev, PROXY_ARP_PVLAN)
+#define IN_DEV_PROXY_ARP_PVLAN(in_dev) IN_DEV_ORCONF((in_dev), PROXY_ARP_PVLAN)
#define IN_DEV_SHARED_MEDIA(in_dev) IN_DEV_ORCONF((in_dev), SHARED_MEDIA)
#define IN_DEV_TX_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), SEND_REDIRECTS)
#define IN_DEV_SEC_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), \
@@ -152,24 +129,31 @@ static inline void ipv4_devconf_setall(struct in_device *in_dev)
|| (!IN_DEV_FORWARD(in_dev) && \
IN_DEV_ORCONF((in_dev), ACCEPT_REDIRECTS)))
+#define IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) \
+ IN_DEV_ORCONF((in_dev), IGNORE_ROUTES_WITH_LINKDOWN)
+
#define IN_DEV_ARPFILTER(in_dev) IN_DEV_ORCONF((in_dev), ARPFILTER)
-#define IN_DEV_ARP_ACCEPT(in_dev) IN_DEV_ORCONF((in_dev), ARP_ACCEPT)
+#define IN_DEV_ARP_ACCEPT(in_dev) IN_DEV_MAXCONF((in_dev), ARP_ACCEPT)
#define IN_DEV_ARP_ANNOUNCE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_ANNOUNCE)
#define IN_DEV_ARP_IGNORE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_IGNORE)
#define IN_DEV_ARP_NOTIFY(in_dev) IN_DEV_MAXCONF((in_dev), ARP_NOTIFY)
+#define IN_DEV_ARP_EVICT_NOCARRIER(in_dev) IN_DEV_ANDCONF((in_dev), \
+ ARP_EVICT_NOCARRIER)
struct in_ifaddr {
- struct hlist_node hash;
- struct in_ifaddr *ifa_next;
+ struct hlist_node addr_lst;
+ struct in_ifaddr __rcu *ifa_next;
struct in_device *ifa_dev;
struct rcu_head rcu_head;
__be32 ifa_local;
__be32 ifa_address;
__be32 ifa_mask;
+ __u32 ifa_rt_priority;
__be32 ifa_broadcast;
unsigned char ifa_scope;
- unsigned char ifa_flags;
unsigned char ifa_prefixlen;
+ unsigned char ifa_proto;
+ __u32 ifa_flags;
char ifa_label[IFNAMSIZ];
/* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */
@@ -179,27 +163,46 @@ struct in_ifaddr {
unsigned long ifa_tstamp; /* updated timestamp */
};
-extern int register_inetaddr_notifier(struct notifier_block *nb);
-extern int unregister_inetaddr_notifier(struct notifier_block *nb);
+struct in_validator_info {
+ __be32 ivi_addr;
+ struct in_device *ivi_dev;
+ struct netlink_ext_ack *extack;
+};
+
+int register_inetaddr_notifier(struct notifier_block *nb);
+int unregister_inetaddr_notifier(struct notifier_block *nb);
+int register_inetaddr_validator_notifier(struct notifier_block *nb);
+int unregister_inetaddr_validator_notifier(struct notifier_block *nb);
-extern void inet_netconf_notify_devconf(struct net *net, int type, int ifindex,
- struct ipv4_devconf *devconf);
+void inet_netconf_notify_devconf(struct net *net, int event, int type,
+ int ifindex, struct ipv4_devconf *devconf);
-extern struct net_device *__ip_dev_find(struct net *net, __be32 addr, bool devref);
+struct net_device *__ip_dev_find(struct net *net, __be32 addr, bool devref);
static inline struct net_device *ip_dev_find(struct net *net, __be32 addr)
{
return __ip_dev_find(net, addr, true);
}
-extern int inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b);
-extern int devinet_ioctl(struct net *net, unsigned int cmd, void __user *);
-extern void devinet_init(void);
-extern struct in_device *inetdev_by_index(struct net *, int);
-extern __be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope);
-extern __be32 inet_confirm_addr(struct in_device *in_dev, __be32 dst, __be32 local, int scope);
-extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix, __be32 mask);
-
-static __inline__ int inet_ifa_match(__be32 addr, struct in_ifaddr *ifa)
+int inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b);
+int devinet_ioctl(struct net *net, unsigned int cmd, struct ifreq *);
+#ifdef CONFIG_INET
+int inet_gifconf(struct net_device *dev, char __user *buf, int len, int size);
+#else
+static inline int inet_gifconf(struct net_device *dev, char __user *buf,
+ int len, int size)
+{
+ return 0;
+}
+#endif
+void devinet_init(void);
+struct in_device *inetdev_by_index(struct net *, int);
+__be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope);
+__be32 inet_confirm_addr(struct net *net, struct in_device *in_dev, __be32 dst,
+ __be32 local, int scope);
+struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix,
+ __be32 mask);
+struct in_ifaddr *inet_lookup_ifaddr_rcu(struct net *net, __be32 addr);
+static inline bool inet_ifa_match(__be32 addr, const struct in_ifaddr *ifa)
{
return !((addr^ifa->ifa_address)&ifa->ifa_mask);
}
@@ -208,25 +211,28 @@ static __inline__ int inet_ifa_match(__be32 addr, struct in_ifaddr *ifa)
* Check if a mask is acceptable.
*/
-static __inline__ int bad_mask(__be32 mask, __be32 addr)
+static __inline__ bool bad_mask(__be32 mask, __be32 addr)
{
__u32 hmask;
if (addr & (mask = ~mask))
- return 1;
+ return true;
hmask = ntohl(mask);
if (hmask & (hmask+1))
- return 1;
- return 0;
+ return true;
+ return false;
}
-#define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \
- for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
-
-#define for_ifa(in_dev) { struct in_ifaddr *ifa; \
- for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
+#define in_dev_for_each_ifa_rtnl(ifa, in_dev) \
+ for (ifa = rtnl_dereference((in_dev)->ifa_list); ifa; \
+ ifa = rtnl_dereference(ifa->ifa_next))
+#define in_dev_for_each_ifa_rtnl_net(net, ifa, in_dev) \
+ for (ifa = rtnl_net_dereference(net, (in_dev)->ifa_list); ifa; \
+ ifa = rtnl_net_dereference(net, ifa->ifa_next))
-#define endfor_ifa(in_dev) }
+#define in_dev_for_each_ifa_rcu(ifa, in_dev) \
+ for (ifa = rcu_dereference((in_dev)->ifa_list); ifa; \
+ ifa = rcu_dereference(ifa->ifa_next))
static inline struct in_device *__in_dev_get_rcu(const struct net_device *dev)
{
@@ -240,7 +246,7 @@ static inline struct in_device *in_dev_get(const struct net_device *dev)
rcu_read_lock();
in_dev = __in_dev_get_rcu(dev);
if (in_dev)
- atomic_inc(&in_dev->refcnt);
+ refcount_inc(&in_dev->refcnt);
rcu_read_unlock();
return in_dev;
}
@@ -250,23 +256,49 @@ static inline struct in_device *__in_dev_get_rtnl(const struct net_device *dev)
return rtnl_dereference(dev->ip_ptr);
}
-extern void in_dev_finish_destroy(struct in_device *idev);
+static inline struct in_device *__in_dev_get_rtnl_net(const struct net_device *dev)
+{
+ return rtnl_net_dereference(dev_net(dev), dev->ip_ptr);
+}
+
+/* called with rcu_read_lock or rtnl held */
+static inline bool ip_ignore_linkdown(const struct net_device *dev)
+{
+ struct in_device *in_dev;
+ bool rc = false;
+
+ in_dev = rcu_dereference_rtnl(dev->ip_ptr);
+ if (in_dev &&
+ IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev))
+ rc = true;
+
+ return rc;
+}
+
+static inline struct neigh_parms *__in_dev_arp_parms_get_rcu(const struct net_device *dev)
+{
+ struct in_device *in_dev = __in_dev_get_rcu(dev);
+
+ return in_dev ? in_dev->arp_parms : NULL;
+}
+
+void in_dev_finish_destroy(struct in_device *idev);
static inline void in_dev_put(struct in_device *idev)
{
- if (atomic_dec_and_test(&idev->refcnt))
+ if (refcount_dec_and_test(&idev->refcnt))
in_dev_finish_destroy(idev);
}
-#define __in_dev_put(idev) atomic_dec(&(idev)->refcnt)
-#define in_dev_hold(idev) atomic_inc(&(idev)->refcnt)
+#define __in_dev_put(idev) refcount_dec(&(idev)->refcnt)
+#define in_dev_hold(idev) refcount_inc(&(idev)->refcnt)
#endif /* __KERNEL__ */
static __inline__ __be32 inet_make_mask(int logmask)
{
if (logmask)
- return htonl(~((1<<(32-logmask))-1));
+ return htonl(~((1U<<(32-logmask))-1));
return 0;
}
generated by cgit (git 2.34.1) at 2025-12-21 21:36:13 +0000