summaryrefslogtreecommitdiff
path: root/include/net/ax25.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/net/ax25.h')
-rw-r--r--include/net/ax25.h69
1 files changed, 44 insertions, 25 deletions
diff --git a/include/net/ax25.h b/include/net/ax25.h
index c4a0cf6f0810..a7bba42dde15 100644
--- a/include/net/ax25.h
+++ b/include/net/ax25.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Declarations of AX.25 type objects.
*
@@ -14,6 +15,7 @@
#include <linux/refcount.h>
#include <net/neighbour.h>
#include <net/sock.h>
+#include <linux/seq_file.h>
#define AX25_T1CLAMPLO 1
#define AX25_T1CLAMPHI (30 * HZ)
@@ -137,7 +139,9 @@ enum {
AX25_VALUES_N2, /* Default N2 value */
AX25_VALUES_PACLEN, /* AX.25 MTU */
AX25_VALUES_PROTOCOL, /* Std AX.25, DAMA Slave, DAMA Master */
+#ifdef CONFIG_AX25_DAMA_SLAVE
AX25_VALUES_DS_TIMEOUT, /* DAMA Slave timeout */
+#endif
AX25_MAX_VALUES /* THIS MUST REMAIN THE LAST ENTRY OF THIS LIST */
};
@@ -185,24 +189,24 @@ typedef struct {
typedef struct ax25_route {
struct ax25_route *next;
- refcount_t refcount;
ax25_address callsign;
struct net_device *dev;
ax25_digi *digipeat;
char ip_mode;
} ax25_route;
-static inline void ax25_hold_route(ax25_route *ax25_rt)
+void __ax25_put_route(ax25_route *ax25_rt);
+
+extern rwlock_t ax25_route_lock;
+
+static inline void ax25_route_lock_use(void)
{
- refcount_inc(&ax25_rt->refcount);
+ read_lock(&ax25_route_lock);
}
-void __ax25_put_route(ax25_route *ax25_rt);
-
-static inline void ax25_put_route(ax25_route *ax25_rt)
+static inline void ax25_route_lock_unuse(void)
{
- if (refcount_dec_and_test(&ax25_rt->refcount))
- __ax25_put_route(ax25_rt);
+ read_unlock(&ax25_route_lock);
}
typedef struct {
@@ -214,14 +218,20 @@ typedef struct {
struct ctl_table;
typedef struct ax25_dev {
- struct ax25_dev *next;
+ struct list_head list;
+
struct net_device *dev;
+ netdevice_tracker dev_tracker;
+
struct net_device *forward;
struct ctl_table_header *sysheader;
int values[AX25_MAX_VALUES];
#if defined(CONFIG_AX25_DAMA_SLAVE) || defined(CONFIG_AX25_DAMA_MASTER)
ax25_dama_info dama;
#endif
+ refcount_t refcount;
+ bool device_up;
+ struct rcu_head rcu;
} ax25_dev;
typedef struct ax25_cb {
@@ -229,6 +239,7 @@ typedef struct ax25_cb {
ax25_address source_addr, dest_addr;
ax25_digi *digipeat;
ax25_dev *ax25_dev;
+ netdevice_tracker dev_tracker;
unsigned char iamdigi;
unsigned char state, modulus, pidincl;
unsigned short vs, vr, va;
@@ -252,10 +263,7 @@ struct ax25_sock {
struct ax25_cb *cb;
};
-static inline struct ax25_sock *ax25_sk(const struct sock *sk)
-{
- return (struct ax25_sock *) sk;
-}
+#define ax25_sk(ptr) container_of_const(ptr, struct ax25_sock, sk)
static inline struct ax25_cb *sk_to_ax25(const struct sock *sk)
{
@@ -276,6 +284,16 @@ static __inline__ void ax25_cb_put(ax25_cb *ax25)
}
}
+static inline void ax25_dev_hold(ax25_dev *ax25_dev)
+{
+ refcount_inc(&ax25_dev->refcount);
+}
+
+static inline void ax25_dev_put(ax25_dev *ax25_dev)
+{
+ if (refcount_dec_and_test(&ax25_dev->refcount))
+ kfree_rcu(ax25_dev, rcu);
+}
static inline __be16 ax25_type_trans(struct sk_buff *skb, struct net_device *dev)
{
skb->dev = dev;
@@ -290,7 +308,7 @@ extern spinlock_t ax25_list_lock;
void ax25_cb_add(ax25_cb *);
struct sock *ax25_find_listener(ax25_address *, int, struct net_device *, int);
struct sock *ax25_get_socket(ax25_address *, ax25_address *, int);
-ax25_cb *ax25_find_cb(ax25_address *, ax25_address *, ax25_digi *,
+ax25_cb *ax25_find_cb(const ax25_address *, ax25_address *, ax25_digi *,
struct net_device *);
void ax25_send_to_raw(ax25_address *, struct sk_buff *, int);
void ax25_destroy_socket(ax25_cb *);
@@ -314,13 +332,14 @@ int ax25_addr_size(const ax25_digi *);
void ax25_digi_invert(const ax25_digi *, ax25_digi *);
/* ax25_dev.c */
-extern ax25_dev *ax25_dev_list;
extern spinlock_t ax25_dev_lock;
-static inline ax25_dev *ax25_dev_ax25dev(struct net_device *dev)
+#if IS_ENABLED(CONFIG_AX25)
+static inline ax25_dev *ax25_dev_ax25dev(const struct net_device *dev)
{
- return dev->ax25_ptr;
+ return rcu_dereference_rtnl(dev->ax25_ptr);
}
+#endif
ax25_dev *ax25_addr_ax25dev(ax25_address *);
void ax25_dev_device_up(struct net_device *);
@@ -368,10 +387,11 @@ struct ax25_linkfail {
void ax25_linkfail_register(struct ax25_linkfail *lf);
void ax25_linkfail_release(struct ax25_linkfail *lf);
-int __must_check ax25_listen_register(ax25_address *, struct net_device *);
-void ax25_listen_release(ax25_address *, struct net_device *);
+int __must_check ax25_listen_register(const ax25_address *,
+ struct net_device *);
+void ax25_listen_release(const ax25_address *, struct net_device *);
int(*ax25_protocol_function(unsigned int))(struct sk_buff *, ax25_cb *);
-int ax25_listen_mine(ax25_address *, struct net_device *);
+int ax25_listen_mine(const ax25_address *, struct net_device *);
void ax25_link_failed(ax25_cb *, int);
int ax25_protocol_is_registered(unsigned int);
@@ -385,8 +405,8 @@ netdev_tx_t ax25_ip_xmit(struct sk_buff *skb);
extern const struct header_ops ax25_header_ops;
/* ax25_out.c */
-ax25_cb *ax25_send_frame(struct sk_buff *, int, ax25_address *, ax25_address *,
- ax25_digi *, struct net_device *);
+ax25_cb *ax25_send_frame(struct sk_buff *, int, const ax25_address *,
+ ax25_address *, ax25_digi *, struct net_device *);
void ax25_output(ax25_cb *, int, struct sk_buff *);
void ax25_kick(ax25_cb *);
void ax25_transmit_buffer(ax25_cb *, struct sk_buff *, int);
@@ -396,9 +416,8 @@ int ax25_check_iframes_acked(ax25_cb *, unsigned short);
/* ax25_route.c */
void ax25_rt_device_down(struct net_device *);
int ax25_rt_ioctl(unsigned int, void __user *);
-extern const struct file_operations ax25_route_fops;
+extern const struct seq_operations ax25_rt_seqops;
ax25_route *ax25_get_route(ax25_address *addr, struct net_device *dev);
-int ax25_rt_autobind(ax25_cb *, ax25_address *);
struct sk_buff *ax25_rt_build_path(struct sk_buff *, ax25_address *,
ax25_address *, ax25_digi *);
void ax25_rt_free(void);
@@ -452,7 +471,7 @@ unsigned long ax25_display_timer(struct timer_list *);
extern int ax25_uid_policy;
ax25_uid_assoc *ax25_findbyuid(kuid_t);
int __must_check ax25_uid_ioctl(int, struct sockaddr_ax25 *);
-extern const struct file_operations ax25_uid_fops;
+extern const struct seq_operations ax25_uid_seqops;
void ax25_uid_free(void);
/* sysctl_net_ax25.c */
generated by cgit (git 2.34.1) at 2025-12-25 03:00:28 +0000