Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index d2c8f28..668e25a 100644
--- a/include/linux/tcp.h
+++ b/include/linux/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
@@ -8,11 +9,6 @@
* Version: @(#)tcp.h 1.0.2 04/28/93
*
* Author: 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 _LINUX_TCP_H
#define _LINUX_TCP_H
@@ -62,12 +58,7 @@
/* TCP Fast Open Cookie as stored in memory */
struct tcp_fastopen_cookie {
- union {
- u8 val[TCP_FASTOPEN_COOKIE_MAX];
-#if IS_ENABLED(CONFIG_IPV6)
- struct in6_addr addr;
-#endif
- };
+ __le64 val[DIV_ROUND_UP(TCP_FASTOPEN_COOKIE_MAX, sizeof(u64))];
s8 len;
bool exp; /* In RFC6994 experimental option format */
};
@@ -249,6 +240,10 @@
syn_smc:1; /* SYN includes SMC */
u32 tlp_high_seq; /* snd_nxt at the time of TLP retransmit. */
+ u32 tcp_tx_delay; /* delay (in usec) added to TX packets */
+ u64 tcp_wstamp_ns; /* departure time for next sent data packet */
+ u64 tcp_clock_cache; /* cache last tcp_clock_ns() (see tcp_mstamp_refresh()) */
+
/* RTT measurement */
u64 tcp_mstamp; /* most recent packet received/sent */
u32 srtt_us; /* smoothed round trip time << 3 in usecs */
@@ -359,6 +354,8 @@
#define BPF_SOCK_OPS_TEST_FLAG(TP, ARG) 0
#endif
+ u32 rcv_ooopack; /* Received out-of-order packets, for tcpinfo */
+
/* Receiver side RTT estimation */
u32 rcv_rtt_last_tsecr;
struct {
@@ -396,7 +393,7 @@
/* fastopen_rsk points to request_sock that resulted in this big
* socket. Used to retransmit SYNACKs etc.
*/
- struct request_sock *fastopen_rsk;
+ struct request_sock __rcu *fastopen_rsk;
u32 *saved_syn;
};
@@ -437,6 +434,7 @@
u32 tw_last_oow_ack_time;
int tw_ts_recent_stamp;
+ u32 tw_tx_delay;
#ifdef CONFIG_TCP_MD5SIG
struct tcp_md5sig_key *tw_md5_key;
#endif
@@ -449,8 +447,8 @@
static inline bool tcp_passive_fastopen(const struct sock *sk)
{
- return (sk->sk_state == TCP_SYN_RECV &&
- tcp_sk(sk)->fastopen_rsk != NULL);
+ return sk->sk_state == TCP_SYN_RECV &&
+ rcu_access_pointer(tcp_sk(sk)->fastopen_rsk) != NULL;
}
static inline void fastopen_queue_tune(struct sock *sk, int backlog)
@@ -485,4 +483,8 @@
return (user_mss && user_mss < mss) ? user_mss : mss;
}
+
+int tcp_skb_shift(struct sk_buff *to, struct sk_buff *from, int pcount,
+ int shiftlen);
+
#endif /* _LINUX_TCP_H */