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Index of /FSS-OZR/root/sys/devices/virtual/tty/tty20/subsystem/tty46
Index of /FSS-OZR/root/sys/devices/virtual/tty/tty20/subsystem/tty46
* l4(
( fB-
u3_I|+ c /* SPDX-License-Identifier: GPL-2.0 */
/*
* Multipath TCP
*
* Copyright (c) 2017 - 2019, Intel Corporation.
*/
#ifndef __NET_MPTCP_H
#define __NET_MPTCP_H
#include
#include
#include
struct mptcp_info;
struct mptcp_sock;
struct seq_file;
/* MPTCP sk_buff extension data */
struct mptcp_ext {
union {
u64 data_ack;
u32 data_ack32;
};
u64 data_seq;
u32 subflow_seq;
u16 data_len;
__sum16 csum;
u8 use_map:1,
dsn64:1,
data_fin:1,
use_ack:1,
ack64:1,
mpc_map:1,
frozen:1,
reset_transient:1;
u8 reset_reason:4,
csum_reqd:1,
infinite_map:1;
};
#define MPTCPOPT_HMAC_LEN 20
#define MPTCP_RM_IDS_MAX 8
struct mptcp_rm_list {
u8 ids[MPTCP_RM_IDS_MAX];
u8 nr;
};
struct mptcp_addr_info {
u8 id;
sa_family_t family;
__be16 port;
union {
struct in_addr addr;
#if IS_ENABLED(CONFIG_MPTCP_IPV6)
struct in6_addr addr6;
#endif
};
};
struct mptcp_out_options {
#if IS_ENABLED(CONFIG_MPTCP)
u16 suboptions;
struct mptcp_rm_list rm_list;
u8 join_id;
u8 backup;
u8 reset_reason:4,
reset_transient:1,
csum_reqd:1,
allow_join_id0:1;
union {
struct {
u64 sndr_key;
u64 rcvr_key;
u64 data_seq;
u32 subflow_seq;
u16 data_len;
__sum16 csum;
};
struct {
struct mptcp_addr_info addr;
u64 ahmac;
};
struct {
struct mptcp_ext ext_copy;
u64 fail_seq;
};
struct {
u32 nonce;
u32 token;
u64 thmac;
u8 hmac[MPTCPOPT_HMAC_LEN];
};
};
#endif
};
#define MPTCP_SCHED_NAME_MAX 16
#define MPTCP_SUBFLOWS_MAX 8
struct mptcp_sched_data {
bool reinject;
u8 subflows;
struct mptcp_subflow_context *contexts[MPTCP_SUBFLOWS_MAX];
};
struct mptcp_sched_ops {
int (*get_subflow)(struct mptcp_sock *msk,
struct mptcp_sched_data *data);
char name[MPTCP_SCHED_NAME_MAX];
struct module *owner;
struct list_head list;
void (*init)(struct mptcp_sock *msk);
void (*release)(struct mptcp_sock *msk);
} ____cacheline_aligned_in_smp;
#ifdef CONFIG_MPTCP
void mptcp_init(void);
static inline bool sk_is_mptcp(const struct sock *sk)
{
return tcp_sk(sk)->is_mptcp;
}
static inline bool rsk_is_mptcp(const struct request_sock *req)
{
return tcp_rsk(req)->is_mptcp;
}
static inline bool rsk_drop_req(const struct request_sock *req)
{
return tcp_rsk(req)->is_mptcp && tcp_rsk(req)->drop_req;
}
void mptcp_space(const struct sock *ssk, int *space, int *full_space);
bool mptcp_syn_options(struct sock *sk, const struct sk_buff *skb,
unsigned in