diff options
Diffstat (limited to 'include/net/tcp.h')
| -rw-r--r-- | include/net/tcp.h | 40 |
1 files changed, 29 insertions, 11 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index 0083a14fb64f..573c9e9b0d72 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * INET An implementation of the TCP/IP protocol suite for the LINUX * operating system. INET is implemented using the BSD Socket @@ -9,11 +10,6 @@ * * Authors: Ross Biro * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #ifndef _TCP_H #define _TCP_H @@ -55,6 +51,8 @@ void tcp_time_wait(struct sock *sk, int state, int timeo); #define MAX_TCP_HEADER (128 + MAX_HEADER) #define MAX_TCP_OPTION_SPACE 40 +#define TCP_MIN_SND_MSS 48 +#define TCP_MIN_GSO_SIZE (TCP_MIN_SND_MSS - MAX_TCP_OPTION_SPACE) /* * Never offer a window over 32767 without using window scaling. Some @@ -1632,9 +1630,9 @@ bool tcp_fastopen_defer_connect(struct sock *sk, int *err); /* Fastopen key context */ struct tcp_fastopen_context { - struct crypto_cipher *tfm[TCP_FASTOPEN_KEY_MAX]; - __u8 key[TCP_FASTOPEN_KEY_BUF_LENGTH]; - struct rcu_head rcu; + __u8 key[TCP_FASTOPEN_KEY_MAX][TCP_FASTOPEN_KEY_LENGTH]; + int num; + struct rcu_head rcu; }; extern unsigned int sysctl_tcp_fastopen_blackhole_timeout; @@ -1669,9 +1667,7 @@ bool tcp_fastopen_cookie_match(const struct tcp_fastopen_cookie *foc, static inline int tcp_fastopen_context_len(const struct tcp_fastopen_context *ctx) { - if (ctx->tfm[1]) - return 2; - return 1; + return ctx->num; } /* Latencies incurred by various limits for a sender. They are @@ -2236,4 +2232,26 @@ void clean_acked_data_disable(struct inet_connection_sock *icsk); void clean_acked_data_flush(void); #endif +DECLARE_STATIC_KEY_FALSE(tcp_tx_delay_enabled); +static inline void tcp_add_tx_delay(struct sk_buff *skb, + const struct tcp_sock *tp) +{ + if (static_branch_unlikely(&tcp_tx_delay_enabled)) + skb->skb_mstamp_ns += (u64)tp->tcp_tx_delay * NSEC_PER_USEC; +} + +/* Compute Earliest Departure Time for some control packets + * like ACK or RST for TIME_WAIT or non ESTABLISHED sockets. + */ +static inline u64 tcp_transmit_time(const struct sock *sk) +{ + if (static_branch_unlikely(&tcp_tx_delay_enabled)) { + u32 delay = (sk->sk_state == TCP_TIME_WAIT) ? + tcp_twsk(sk)->tw_tx_delay : tcp_sk(sk)->tcp_tx_delay; + + return tcp_clock_ns() + (u64)delay * NSEC_PER_USEC; + } + return 0; +} + #endif /* _TCP_H */ |