summaryrefslogtreecommitdiffstats
path: root/include/net/sock.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/net/sock.h')
-rw-r--r--include/net/sock.h65
1 files changed, 29 insertions, 36 deletions
diff --git a/include/net/sock.h b/include/net/sock.h
index f97da141d920..48e4d5c38f85 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -66,6 +66,7 @@
#include <linux/poll.h>
#include <linux/atomic.h>
+#include <linux/refcount.h>
#include <net/dst.h>
#include <net/checksum.h>
#include <net/tcp_states.h>
@@ -219,7 +220,7 @@ struct sock_common {
u32 skc_tw_rcv_nxt; /* struct tcp_timewait_sock */
};
- atomic_t skc_refcnt;
+ refcount_t skc_refcnt;
/* private: */
int skc_dontcopy_end[0];
union {
@@ -253,6 +254,7 @@ struct sock_common {
* @sk_ll_usec: usecs to busypoll when there is no data
* @sk_allocation: allocation mode
* @sk_pacing_rate: Pacing rate (if supported by transport/packet scheduler)
+ * @sk_pacing_status: Pacing status (requested, handled by sch_fq)
* @sk_max_pacing_rate: Maximum pacing rate (%SO_MAX_PACING_RATE)
* @sk_sndbuf: size of send buffer in bytes
* @sk_padding: unused element for alignment
@@ -389,14 +391,14 @@ struct sock {
/* ===== cache line for TX ===== */
int sk_wmem_queued;
- atomic_t sk_wmem_alloc;
+ refcount_t sk_wmem_alloc;
unsigned long sk_tsq_flags;
struct sk_buff *sk_send_head;
struct sk_buff_head sk_write_queue;
__s32 sk_peek_off;
int sk_write_pending;
__u32 sk_dst_pending_confirm;
- /* Note: 32bit hole on 64bit arches */
+ u32 sk_pacing_status; /* see enum sk_pacing */
long sk_sndtimeo;
struct timer_list sk_timer;
__u32 sk_priority;
@@ -475,6 +477,12 @@ struct sock {
struct rcu_head sk_rcu;
};
+enum sk_pacing {
+ SK_PACING_NONE = 0,
+ SK_PACING_NEEDED = 1,
+ SK_PACING_FQ = 2,
+};
+
#define __sk_user_data(sk) ((*((void __rcu **)&(sk)->sk_user_data)))
#define rcu_dereference_sk_user_data(sk) rcu_dereference(__sk_user_data((sk)))
@@ -604,7 +612,7 @@ static inline bool __sk_del_node_init(struct sock *sk)
static __always_inline void sock_hold(struct sock *sk)
{
- atomic_inc(&sk->sk_refcnt);
+ refcount_inc(&sk->sk_refcnt);
}
/* Ungrab socket in the context, which assumes that socket refcnt
@@ -612,7 +620,7 @@ static __always_inline void sock_hold(struct sock *sk)
*/
static __always_inline void __sock_put(struct sock *sk)
{
- atomic_dec(&sk->sk_refcnt);
+ refcount_dec(&sk->sk_refcnt);
}
static inline bool sk_del_node_init(struct sock *sk)
@@ -621,7 +629,7 @@ static inline bool sk_del_node_init(struct sock *sk)
if (rc) {
/* paranoid for a while -acme */
- WARN_ON(atomic_read(&sk->sk_refcnt) == 1);
+ WARN_ON(refcount_read(&sk->sk_refcnt) == 1);
__sock_put(sk);
}
return rc;
@@ -643,7 +651,7 @@ static inline bool sk_nulls_del_node_init_rcu(struct sock *sk)
if (rc) {
/* paranoid for a while -acme */
- WARN_ON(atomic_read(&sk->sk_refcnt) == 1);
+ WARN_ON(refcount_read(&sk->sk_refcnt) == 1);
__sock_put(sk);
}
return rc;
@@ -900,7 +908,10 @@ static inline int sk_backlog_rcv(struct sock *sk, struct sk_buff *skb)
static inline void sk_incoming_cpu_update(struct sock *sk)
{
- sk->sk_incoming_cpu = raw_smp_processor_id();
+ int cpu = raw_smp_processor_id();
+
+ if (unlikely(sk->sk_incoming_cpu != cpu))
+ sk->sk_incoming_cpu = cpu;
}
static inline void sock_rps_record_flow_hash(__u32 hash)
@@ -1073,6 +1084,7 @@ struct proto {
bool (*stream_memory_free)(const struct sock *sk);
/* Memory pressure */
void (*enter_memory_pressure)(struct sock *sk);
+ void (*leave_memory_pressure)(struct sock *sk);
atomic_long_t *memory_allocated; /* Current allocated memory. */
struct percpu_counter *sockets_allocated; /* Current number of sockets. */
/*
@@ -1081,7 +1093,7 @@ struct proto {
* All the __sk_mem_schedule() is of this nature: accounting
* is strict, actions are advisory and have some latency.
*/
- int *memory_pressure;
+ unsigned long *memory_pressure;
long *sysctl_mem;
int *sysctl_wmem;
int *sysctl_rmem;
@@ -1133,9 +1145,9 @@ static inline void sk_refcnt_debug_dec(struct sock *sk)
static inline void sk_refcnt_debug_release(const struct sock *sk)
{
- if (atomic_read(&sk->sk_refcnt) != 1)
+ if (refcount_read(&sk->sk_refcnt) != 1)
printk(KERN_DEBUG "Destruction of the %s socket %p delayed, refcnt=%d\n",
- sk->sk_prot->name, sk, atomic_read(&sk->sk_refcnt));
+ sk->sk_prot->name, sk, refcount_read(&sk->sk_refcnt));
}
#else /* SOCK_REFCNT_DEBUG */
#define sk_refcnt_debug_inc(sk) do { } while (0)
@@ -1186,25 +1198,6 @@ static inline bool sk_under_memory_pressure(const struct sock *sk)
return !!*sk->sk_prot->memory_pressure;
}
-static inline void sk_leave_memory_pressure(struct sock *sk)
-{
- int *memory_pressure = sk->sk_prot->memory_pressure;
-
- if (!memory_pressure)
- return;
-
- if (*memory_pressure)
- *memory_pressure = 0;
-}
-
-static inline void sk_enter_memory_pressure(struct sock *sk)
-{
- if (!sk->sk_prot->enter_memory_pressure)
- return;
-
- sk->sk_prot->enter_memory_pressure(sk);
-}
-
static inline long
sk_memory_allocated(const struct sock *sk)
{
@@ -1644,7 +1637,7 @@ void sock_init_data(struct socket *sock, struct sock *sk);
/* Ungrab socket and destroy it, if it was the last reference. */
static inline void sock_put(struct sock *sk)
{
- if (atomic_dec_and_test(&sk->sk_refcnt))
+ if (refcount_dec_and_test(&sk->sk_refcnt))
sk_free(sk);
}
/* Generic version of sock_put(), dealing with all sockets
@@ -1919,7 +1912,7 @@ static inline int skb_copy_to_page_nocache(struct sock *sk, struct iov_iter *fro
*/
static inline int sk_wmem_alloc_get(const struct sock *sk)
{
- return atomic_read(&sk->sk_wmem_alloc) - 1;
+ return refcount_read(&sk->sk_wmem_alloc) - 1;
}
/**
@@ -2034,8 +2027,8 @@ void sk_reset_timer(struct sock *sk, struct timer_list *timer,
void sk_stop_timer(struct sock *sk, struct timer_list *timer);
-int __sk_queue_drop_skb(struct sock *sk, struct sk_buff *skb,
- unsigned int flags,
+int __sk_queue_drop_skb(struct sock *sk, struct sk_buff_head *sk_queue,
+ struct sk_buff *skb, unsigned int flags,
void (*destructor)(struct sock *sk,
struct sk_buff *skb));
int __sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
@@ -2062,7 +2055,7 @@ static inline unsigned long sock_wspace(struct sock *sk)
int amt = 0;
if (!(sk->sk_shutdown & SEND_SHUTDOWN)) {
- amt = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
+ amt = sk->sk_sndbuf - refcount_read(&sk->sk_wmem_alloc);
if (amt < 0)
amt = 0;
}
@@ -2143,7 +2136,7 @@ bool sk_page_frag_refill(struct sock *sk, struct page_frag *pfrag);
*/
static inline bool sock_writeable(const struct sock *sk)
{
- return atomic_read(&sk->sk_wmem_alloc) < (sk->sk_sndbuf >> 1);
+ return refcount_read(&sk->sk_wmem_alloc) < (sk->sk_sndbuf >> 1);
}
static inline gfp_t gfp_any(void)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 03:33:40 +0000