#include <linux/rculist_nulls.h>
#include <linux/poll.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
#include <net/dst.h>
#include <net/checksum.h>
#define sk_bind_node __sk_common.skc_bind_node
#define sk_prot __sk_common.skc_prot
#define sk_net __sk_common.skc_net
- kmemcheck_bitfield_begin(flags);
- unsigned int sk_shutdown : 2,
- sk_no_check : 2,
- sk_userlocks : 4,
- sk_protocol : 8,
- sk_type : 16;
- kmemcheck_bitfield_end(flags);
- int sk_rcvbuf;
socket_lock_t sk_lock;
+ struct sk_buff_head sk_receive_queue;
/*
* The backlog queue is special, it is always used with
* the per-socket spinlock held and requires low latency
* access. Therefore we special case it's implementation.
+ * Note : rmem_alloc is in this structure to fill a hole
+ * on 64bit arches, not because its logically part of
+ * backlog.
*/
struct {
- struct sk_buff *head;
- struct sk_buff *tail;
- int len;
+ atomic_t rmem_alloc;
+ int len;
+ struct sk_buff *head;
+ struct sk_buff *tail;
} sk_backlog;
+#define sk_rmem_alloc sk_backlog.rmem_alloc
+ int sk_forward_alloc;
+#ifdef CONFIG_RPS
+ __u32 sk_rxhash;
+#endif
+ atomic_t sk_drops;
+ int sk_rcvbuf;
+
+ struct sk_filter __rcu *sk_filter;
struct socket_wq *sk_wq;
- struct dst_entry *sk_dst_cache;
+
+#ifdef CONFIG_NET_DMA
+ struct sk_buff_head sk_async_wait_queue;
+#endif
+
#ifdef CONFIG_XFRM
struct xfrm_policy *sk_policy[2];
#endif
+ unsigned long sk_flags;
+ struct dst_entry *sk_dst_cache;
spinlock_t sk_dst_lock;
- atomic_t sk_rmem_alloc;
atomic_t sk_wmem_alloc;
atomic_t sk_omem_alloc;
int sk_sndbuf;
- struct sk_buff_head sk_receive_queue;
struct sk_buff_head sk_write_queue;
-#ifdef CONFIG_NET_DMA
- struct sk_buff_head sk_async_wait_queue;
-#endif
+ kmemcheck_bitfield_begin(flags);
+ unsigned int sk_shutdown : 2,
+ sk_no_check : 2,
+ sk_userlocks : 4,
+ sk_protocol : 8,
+ sk_type : 16;
+ kmemcheck_bitfield_end(flags);
int sk_wmem_queued;
- int sk_forward_alloc;
gfp_t sk_allocation;
int sk_route_caps;
int sk_route_nocaps;
int sk_gso_type;
unsigned int sk_gso_max_size;
int sk_rcvlowat;
-#ifdef CONFIG_RPS
- __u32 sk_rxhash;
-#endif
- unsigned long sk_flags;
unsigned long sk_lingertime;
struct sk_buff_head sk_error_queue;
struct proto *sk_prot_creator;
rwlock_t sk_callback_lock;
int sk_err,
sk_err_soft;
- atomic_t sk_drops;
unsigned short sk_ack_backlog;
unsigned short sk_max_ack_backlog;
__u32 sk_priority;
const struct cred *sk_peer_cred;
long sk_rcvtimeo;
long sk_sndtimeo;
- struct sk_filter *sk_filter;
void *sk_protinfo;
struct timer_list sk_timer;
ktime_t sk_stamp;
/* Keeping track of sk's, looking them up, and port selection methods. */
void (*hash)(struct sock *sk);
void (*unhash)(struct sock *sk);
+ void (*rehash)(struct sock *sk);
int (*get_port)(struct sock *sk, unsigned short snum);
/* Keeping track of sockets in use */
/* Memory pressure */
void (*enter_memory_pressure)(struct sock *sk);
- atomic_t *memory_allocated; /* Current allocated memory. */
+ atomic_long_t *memory_allocated; /* Current allocated memory. */
struct percpu_counter *sockets_allocated; /* Current number of sockets. */
/*
* Pressure flag: try to collapse.
* is strict, actions are advisory and have some latency.
*/
int *memory_pressure;
- int *sysctl_mem;
+ long *sysctl_mem;
int *sysctl_wmem;
int *sysctl_rmem;
int max_header;
}
#define SOCK_MIN_SNDBUF 2048
-#define SOCK_MIN_RCVBUF 256
+/*
+ * Since sk_rmem_alloc sums skb->truesize, even a small frame might need
+ * sizeof(sk_buff) + MTU + padding, unless net driver perform copybreak
+ */
+#define SOCK_MIN_RCVBUF (2048 + sizeof(struct sk_buff))
static inline void sk_stream_moderate_sndbuf(struct sock *sk)
{
/**
* sock_tx_timestamp - checks whether the outgoing packet is to be time stamped
- * @msg: outgoing packet
* @sk: socket sending this packet
- * @shtx: filled with instructions for time stamping
+ * @tx_flags: filled with instructions for time stamping
*
* Currently only depends on SOCK_TIMESTAMPING* flags. Returns error code if
* parameters are invalid.
*/
-extern int sock_tx_timestamp(struct msghdr *msg,
- struct sock *sk,
- union skb_shared_tx *shtx);
-
+extern int sock_tx_timestamp(struct sock *sk, __u8 *tx_flags);
/**
* sk_eat_skb - Release a skb if it is no longer needed