#include <linux/module.h>
#include <linux/lockdep.h>
#include <linux/netdevice.h>
-#include <linux/pcounter.h>
#include <linux/skbuff.h> /* struct sk_buff */
#include <linux/mm.h>
#include <linux/security.h>
* @sk_err: last error
* @sk_err_soft: errors that don't cause failure but are the cause of a
* persistent failure not just 'timed out'
- * @sk_drops: raw drops counter
+ * @sk_drops: raw/udp drops counter
* @sk_ack_backlog: current listen backlog
* @sk_max_ack_backlog: listen backlog set in listen()
* @sk_priority: %SO_PRIORITY setting
int (*ioctl)(struct sock *sk, int cmd,
unsigned long arg);
int (*init)(struct sock *sk);
- int (*destroy)(struct sock *sk);
+ void (*destroy)(struct sock *sk);
void (*shutdown)(struct sock *sk, int how);
int (*setsockopt)(struct sock *sk, int level,
int optname, char __user *optval,
/* Keeping track of sockets in use */
#ifdef CONFIG_PROC_FS
unsigned int inuse_idx;
- struct pcounter inuse;
#endif
/* Memory pressure */
- void (*enter_memory_pressure)(void);
+ void (*enter_memory_pressure)(struct sock *sk);
atomic_t *memory_allocated; /* Current allocated memory. */
atomic_t *sockets_allocated; /* Current number of sockets. */
/*
#ifdef CONFIG_PROC_FS
-# define DEFINE_PROTO_INUSE(NAME) DEFINE_PCOUNTER(NAME)
-# define REF_PROTO_INUSE(NAME) PCOUNTER_MEMBER_INITIALIZER(NAME, .inuse)
/* Called with local bh disabled */
-extern void sock_prot_inuse_add(struct proto *prot, int inc);
-extern int sock_prot_inuse_get(struct proto *proto);
+extern void sock_prot_inuse_add(struct net *net, struct proto *prot, int inc);
+extern int sock_prot_inuse_get(struct net *net, struct proto *proto);
#else
-# define DEFINE_PROTO_INUSE(NAME)
-# define REF_PROTO_INUSE(NAME)
-static void inline sock_prot_inuse_add(struct proto *prot, int inc)
+static void inline sock_prot_inuse_add(struct net *net, struct proto *prot,
+ int inc)
{
}
#endif
extern void sock_init_data(struct socket *sock, struct sock *sk);
/**
- * sk_filter - run a packet through a socket filter
- * @sk: sock associated with &sk_buff
- * @skb: buffer to filter
- * @needlock: set to 1 if the sock is not locked by caller.
- *
- * Run the filter code and then cut skb->data to correct size returned by
- * sk_run_filter. If pkt_len is 0 we toss packet. If skb->len is smaller
- * than pkt_len we keep whole skb->data. This is the socket level
- * wrapper to sk_run_filter. It returns 0 if the packet should
- * be accepted or -EPERM if the packet should be tossed.
- *
- */
-
-static inline int sk_filter(struct sock *sk, struct sk_buff *skb)
-{
- int err;
- struct sk_filter *filter;
-
- err = security_sock_rcv_skb(sk, skb);
- if (err)
- return err;
-
- rcu_read_lock_bh();
- filter = rcu_dereference(sk->sk_filter);
- if (filter) {
- unsigned int pkt_len = sk_run_filter(skb, filter->insns,
- filter->len);
- err = pkt_len ? pskb_trim(skb, pkt_len) : -EPERM;
- }
- rcu_read_unlock_bh();
-
- return err;
-}
-
-/**
* sk_filter_release: Release a socket filter
* @sk: socket
* @fp: filter to remove
extern int sk_receive_skb(struct sock *sk, struct sk_buff *skb,
const int nested);
+static inline void sk_set_socket(struct sock *sk, struct socket *sock)
+{
+ sk->sk_socket = sock;
+}
+
/* Detach socket from process context.
* Announce socket dead, detach it from wait queue and inode.
* Note that parent inode held reference count on this struct sock,
{
write_lock_bh(&sk->sk_callback_lock);
sock_set_flag(sk, SOCK_DEAD);
- sk->sk_socket = NULL;
+ sk_set_socket(sk, NULL);
sk->sk_sleep = NULL;
write_unlock_bh(&sk->sk_callback_lock);
}
write_lock_bh(&sk->sk_callback_lock);
sk->sk_sleep = &parent->wait;
parent->sk = sk;
- sk->sk_socket = parent;
+ sk_set_socket(sk, parent);
security_sock_graft(sk, parent);
write_unlock_bh(&sk->sk_callback_lock);
}
page = alloc_pages(sk->sk_allocation, 0);
if (!page) {
- sk->sk_prot->enter_memory_pressure();
+ sk->sk_prot->enter_memory_pressure(sk);
sk_stream_moderate_sndbuf(sk);
}
return page;
static inline void sk_change_net(struct sock *sk, struct net *net)
{
put_net(sock_net(sk));
- sock_net_set(sk, net);
+ sock_net_set(sk, hold_net(net));
}
extern void sock_enable_timestamp(struct sock *sk);
#define LIMIT_NETDEBUG(fmt, args...) \
do { if (net_msg_warn && net_ratelimit()) printk(fmt,##args); } while(0)
-/*
- * Macros for sleeping on a socket. Use them like this:
- *
- * SOCK_SLEEP_PRE(sk)
- * if (condition)
- * schedule();
- * SOCK_SLEEP_POST(sk)
- *
- * N.B. These are now obsolete and were, afaik, only ever used in DECnet
- * and when the last use of them in DECnet has gone, I'm intending to
- * remove them.
- */
-
-#define SOCK_SLEEP_PRE(sk) { struct task_struct *tsk = current; \
- DECLARE_WAITQUEUE(wait, tsk); \
- tsk->state = TASK_INTERRUPTIBLE; \
- add_wait_queue((sk)->sk_sleep, &wait); \
- release_sock(sk);
-
-#define SOCK_SLEEP_POST(sk) tsk->state = TASK_RUNNING; \
- remove_wait_queue((sk)->sk_sleep, &wait); \
- lock_sock(sk); \
- }
-
extern __u32 sysctl_wmem_max;
extern __u32 sysctl_rmem_max;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff