diff options
Diffstat (limited to 'include/linux/tcp.h')
| -rw-r--r-- | include/linux/tcp.h | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 5f359dbfcdce..eb125a4c30b3 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -243,6 +243,16 @@ 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 */ + +/* TCP Fast Open Cookie as stored in memory */ +struct tcp_fastopen_cookie { + s8 len; + u8 val[TCP_FASTOPEN_COOKIE_MAX]; +}; + /* This defines a selective acknowledgement block. */ struct tcp_sack_block_wire { __be32 start_seq; @@ -339,6 +349,9 @@ struct tcp_sock { u32 rcv_tstamp; /* timestamp of last received ACK (for keepalives) */ u32 lsndtime; /* timestamp of last sent data packet (for restart window) */ + struct list_head tsq_node; /* anchor in tsq_tasklet.head list */ + unsigned long tsq_flags; + /* Data for direct copy to user */ struct { struct sk_buff_head prequeue; @@ -373,7 +386,9 @@ struct tcp_sock { unused : 1; u8 repair_queue; u8 do_early_retrans:1,/* Enable RFC5827 early-retransmit */ - early_retrans_delayed:1; /* Delayed ER timer installed */ + early_retrans_delayed:1, /* Delayed ER timer installed */ + syn_data:1, /* SYN includes data */ + syn_fastopen:1; /* SYN includes Fast Open option */ /* RTT measurement */ u32 srtt; /* smoothed round trip time << 3 */ @@ -478,6 +493,9 @@ struct tcp_sock { u32 probe_seq_start; u32 probe_seq_end; } mtu_probe; + u32 mtu_info; /* We received an ICMP_FRAG_NEEDED / ICMPV6_PKT_TOOBIG + * while socket was owned by user. + */ #ifdef CONFIG_TCP_MD5SIG /* TCP AF-Specific parts; only used by MD5 Signature support so far */ @@ -487,6 +505,9 @@ struct tcp_sock { struct tcp_md5sig_info __rcu *md5sig_info; #endif +/* TCP fastopen related information */ + struct tcp_fastopen_request *fastopen_req; + /* When the cookie options are generated and exchanged, then this * object holds a reference to them (cookie_values->kref). Also * contains related tcp_cookie_transactions fields. @@ -494,6 +515,17 @@ struct tcp_sock { struct tcp_cookie_values *cookie_values; }; +enum tsq_flags { + TSQ_THROTTLED, + TSQ_QUEUED, + TCP_TSQ_DEFERRED, /* tcp_tasklet_func() found socket was owned */ + TCP_WRITE_TIMER_DEFERRED, /* tcp_write_timer() found socket was owned */ + TCP_DELACK_TIMER_DEFERRED, /* tcp_delack_timer() found socket was owned */ + TCP_MTU_REDUCED_DEFERRED, /* tcp_v{4|6}_err() could not call + * tcp_v{4|6}_mtu_reduced() + */ +}; + static inline struct tcp_sock *tcp_sk(const struct sock *sk) { return (struct tcp_sock *)sk; @@ -507,7 +539,7 @@ struct tcp_timewait_sock { u32 tw_ts_recent; long tw_ts_recent_stamp; #ifdef CONFIG_TCP_MD5SIG - struct tcp_md5sig_key *tw_md5_key; + struct tcp_md5sig_key *tw_md5_key; #endif /* Few sockets in timewait have cookies; in that case, then this * object holds a reference to them (tw_cookie_values->kref). |