OpenCloudOS-Kernel/net/ipv4/netlat.h

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/* SPDX-License-Identifier: GPL-2.0-only
*
* add a netlat to monitor tcp -package latency
*
* Author: mengensun <mengensun@tencent.com>
* Copyright (C) 2024 Tencent, Inc
*/
#ifndef H______NETLAT
#define H______NETLAT
#ifdef CONFIG_NETLAT
int netlat_net_init(void);
void netlat_net_exit(void);
void netlat_ack_check(struct sock *sk, struct sk_buff *skb);
void netlat_copy_rtxq_skb(struct sock *sk, struct sk_buff *dst, struct sk_buff *src);
void netlat_tcp_enrtxqueue(struct sock *sk, struct sk_buff *skb);
#define netlat_check(oldest, sk, skb) \
do { \
if (oldest) { \
netlat_ack_check(sk, skb); \
oldest = false; \
} \
} while (0)
void netlat_queue_check(struct sock *sk, struct sk_buff *skb);
void netlat_pick_check(struct sock *sk, struct sk_buff *skb);
#else /* CONFIG_NETLAT */
static __always_inline int netlat_net_init(void) { return 0; };
static __always_inline void netlat_net_exit(void) { };
static __always_inline void netlat_ack_check(struct sock *sk,
struct sk_buff *skb) { };
static __always_inline void netlat_copy_rtxq_skb(struct sock *sk,
struct sk_buff *dst,
struct sk_buff *src) { };
static __always_inline void netlat_tcp_enrtxqueue(struct sock *sk,
struct sk_buff *skb) { };
#define netlat_check(oldest, sk, skb)
#define netlat_queue_check(sk, skb)
#define netlat_pick_check(sk, skb)
#endif /* !CONFIG_NETLAT */
#endif