19
! 7lY>n-je@)F
1ȿ 7
9
734Ϳ 9
Index of /anon_sym/anon/sys/module/kvm_amd/notes
Index of /anon_sym/anon/sys/module/kvm_amd/notes
;ο ;File not found.
=
ѿ ? =/* 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
* interface as the means of communication with the user level.
*
* Definitions for the TCP protocol.
*
* Version: @(#)tcp.h 1.0.2 04/28/93
*
* Author: Fred N. van Kempen,
*/
#ifndef _LINUX_TCP_H
#define _LINUX_TCP_H
#include
#include
#include
#include
#include
#include
static inline struct tcphdr *tcp_hdr(const struct sk_buff *skb)
{
return (struct tcphdr *)skb_transport_header(skb);
}
static inline unsigned int __tcp_hdrlen(const struct tcphdr *th)
{
return th->doff * 4;
}
static inline unsigned int tcp_hdrlen(const struct sk_buff *skb)
{
return __tcp_hdrlen(tcp_hdr(skb));
}
static inline struct tcphdr *inner_tcp_hdr(const struct sk_buff *skb)
{
return (struct tcphdr *)skb_inner_transport_header(skb);
}
static inline unsigned int inner_tcp_hdrlen(const struct sk_buff *skb)
{
return inner_tcp_hdr(skb)->doff * 4;
}
/**
* skb_tcp_all_headers - Returns size of all headers for a TCP packet
* @skb: buffer
*
* Used in TX path, for a packet known to be a TCP one.
*
* if (skb_is_gso(skb)) {
* int hlen = skb_tcp_all_headers(skb);
* ...
*/
static inline int skb_tcp_all_headers(const struct sk_buff *skb)
{
return skb_transport_offset(skb) + tcp_hdrlen(skb);
}
/**
* skb_inner_tcp_all_headers - Returns size of all headers for an encap TCP packet
* @skb: buffer
*
* Used in TX path, for a packet known to be a TCP one.
*
* if (skb_is_gso(skb) && skb->encapsulation) {
* int hlen = skb_inner_tcp_all_headers(skb);
* ...
*/
static inline int skb_inner_tcp_all_headers(const struct sk_buff *skb)
{
return skb_inner_transport_offset(skb) + inner_tcp_hdrlen(skb);
}
static inline unsigned int tcp_optlen(const struct sk_buff *skb)
{
return (tcp_hdr(skb)->doff - 5) * 4;
}
/* TCP Fast Open */
#define TCP_FASTOPEN_COOKIE_MIN 4 /* Min Fast Open Cookie size in bytes */
#define TCP_FASTOPEN_COOKIE_MAX 16 /* Max Fast Open Cookie size in bytes */
#define TCP_FASTOPEN_COOKIE_SIZE 8 /* the size employed by this impl. */
/* TCP Fast Open Cookie as stored in memory */
struct tcp_fastopen_cookie {
__le64 val[DIV_ROUND_UP(TCP_FASTOPEN_COOKIE_MAX, sizeof(u64))];
s8 len;
bool exp; /* In RFC6994 experimental option format */
};
/* This defines a selective acknowledgement block. */
struct tcp_sack_block_wire {
__be32 start_seq;
__be32 end_seq;
};
struct tcp_sack_block {
u32 start_seq;
u32 end_seq;
};
/*These are used to set the sack_ok field in struct tcp_options_received */
#define TCP_SACK_SEEN (1 << 0) /*1 = peer is SACK capable, */
#define TCP_DSACK_SEEN (1 << 2) /*1 = DSACK was received from peer*/
struct tcp_options_received {
/* PAWS/RTTM data */
int ts_recent_stamp;/* Time we stored ts_recent (for aging) */
u32 ts_recent; /* Time stamp to echo next */
u32 rcv_tsval; /* Time stamp value */
u32 rcv_tsecr; /* Time stamp echo reply