__u32 tcpi_rcv_rtt;
__u32 tcpi_rcv_space;
+
+ __u32 tcpi_total_retrans;
};
#ifdef __KERNEL__
__u32 end_seq;
};
-struct tcp_opt {
+enum tcp_congestion_algo {
+ TCP_RENO=0,
+ TCP_VEGAS,
+ TCP_WESTWOOD,
+ TCP_BIC,
+};
+
+struct tcp_options_received {
+/* PAWS/RTTM data */
+ long 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 */
+ char saw_tstamp; /* Saw TIMESTAMP on last packet */
+ char tstamp_ok; /* TIMESTAMP seen on SYN packet */
+ char sack_ok; /* SACK seen on SYN packet */
+ char wscale_ok; /* Wscale seen on SYN packet */
+ __u8 snd_wscale; /* Window scaling received from sender */
+ __u8 rcv_wscale; /* Window scaling to send to receiver */
+/* SACKs data */
+ __u8 dsack; /* D-SACK is scheduled */
+ __u8 eff_sacks; /* Size of SACK array to send with next packet */
+ __u8 num_sacks; /* Number of SACK blocks */
+ __u8 __pad;
+ __u16 user_mss; /* mss requested by user in ioctl */
+ __u16 mss_clamp; /* Maximal mss, negotiated at connection setup */
+};
+
+struct tcp_sock {
+ /* inet_sock has to be the first member of tcp_sock */
+ struct inet_sock inet;
int tcp_header_len; /* Bytes of tcp header to send */
/*
__u32 pmtu_cookie; /* Last pmtu seen by socket */
__u32 mss_cache; /* Cached effective mss, not including SACKS */
__u16 mss_cache_std; /* Like mss_cache, but without TSO */
- __u16 mss_clamp; /* Maximal mss, negotiated at connection setup */
__u16 ext_header_len; /* Network protocol overhead (IP/IPv6 options) */
__u16 ext2_header_len;/* Options depending on route */
__u8 ca_state; /* State of fast-retransmit machine */
__u8 retransmits; /* Number of unrecovered RTO timeouts. */
+ __u32 frto_highmark; /* snd_nxt when RTO occurred */
__u8 reordering; /* Packet reordering metric. */
__u8 frto_counter; /* Number of new acks after RTO */
- __u32 frto_highmark; /* snd_nxt when RTO occurred */
- __u8 unused_pad;
+ __u8 adv_cong; /* Using Vegas, Westwood, or BIC */
__u8 defer_accept; /* User waits for some data after accept() */
- /* one byte hole, try to pack */
/* RTT measurement */
- __u8 backoff; /* backoff */
- __u32 srtt; /* smothed round trip time << 3 */
+ __u32 srtt; /* smoothed round trip time << 3 */
__u32 mdev; /* medium deviation */
__u32 mdev_max; /* maximal mdev for the last rtt period */
__u32 rttvar; /* smoothed mdev_max */
__u32 rto; /* retransmit timeout */
__u32 packets_out; /* Packets which are "in flight" */
- __u32 left_out; /* Packets which leaved network */
+ __u32 left_out; /* Packets which leaved network */
__u32 retrans_out; /* Retransmitted packets out */
+ __u8 backoff; /* backoff */
+/*
+ * Options received (usually on last packet, some only on SYN packets).
+ */
+ __u8 nonagle; /* Disable Nagle algorithm? */
+ __u8 keepalive_probes; /* num of allowed keep alive probes */
+ __u8 probes_out; /* unanswered 0 window probes */
+ struct tcp_options_received rx_opt;
/*
* Slow start and congestion control (see also Nagle, and Karn & Partridge)
__u32 write_seq; /* Tail(+1) of data held in tcp send buffer */
__u32 pushed_seq; /* Last pushed seq, required to talk to windows */
__u32 copied_seq; /* Head of yet unread data */
-/*
- * Options received (usually on last packet, some only on SYN packets).
- */
- char tstamp_ok, /* TIMESTAMP seen on SYN packet */
- wscale_ok, /* Wscale seen on SYN packet */
- sack_ok; /* SACK seen on SYN packet */
- char saw_tstamp; /* Saw TIMESTAMP on last packet */
- __u8 snd_wscale; /* Window scaling received from sender */
- __u8 rcv_wscale; /* Window scaling to send to receiver */
- __u8 nonagle; /* Disable Nagle algorithm? */
- __u8 keepalive_probes; /* num of allowed keep alive probes */
-
-/* PAWS/RTTM data */
- __u32 rcv_tsval; /* Time stamp value */
- __u32 rcv_tsecr; /* Time stamp echo reply */
- __u32 ts_recent; /* Time stamp to echo next */
- long ts_recent_stamp;/* Time we stored ts_recent (for aging) */
/* SACKs data */
- __u16 user_mss; /* mss requested by user in ioctl */
- __u8 dsack; /* D-SACK is scheduled */
- __u8 eff_sacks; /* Size of SACK array to send with next packet */
struct tcp_sack_block duplicate_sack[1]; /* D-SACK block */
struct tcp_sack_block selective_acks[4]; /* The SACKS themselves*/
__u32 window_clamp; /* Maximal window to advertise */
__u32 rcv_ssthresh; /* Current window clamp */
- __u8 probes_out; /* unanswered 0 window probes */
- __u8 num_sacks; /* Number of SACK blocks */
__u16 advmss; /* Advertised MSS */
__u8 syn_retries; /* num of allowed syn retries */
__u8 ecn_flags; /* ECN status bits. */
__u16 prior_ssthresh; /* ssthresh saved at recovery start */
- __u32 lost_out; /* Lost packets */
+ __u16 __pad1;
+ __u32 lost_out; /* Lost packets */
__u32 sacked_out; /* SACK'd packets */
__u32 fackets_out; /* FACK'd packets */
__u32 high_seq; /* snd_nxt at onset of congestion */
__u8 urg_mode; /* In urgent mode */
__u32 snd_up; /* Urgent pointer */
+ __u32 total_retrans; /* Total retransmits for entire connection */
+
/* The syn_wait_lock is necessary only to avoid proc interface having
* to grab the main lock sock while browsing the listening hash
* (otherwise it's deadlock prone).
__u32 beg_snd_nxt; /* right edge during last RTT */
__u32 beg_snd_una; /* left edge during last RTT */
__u32 beg_snd_cwnd; /* saves the size of the cwnd */
- __u8 do_vegas; /* do vegas for this connection */
__u8 doing_vegas_now;/* if true, do vegas for this RTT */
__u16 cntRTT; /* # of RTTs measured within last RTT */
__u32 minRTT; /* min of RTTs measured within last RTT (in usec) */
} bictcp;
};
-/* WARNING: don't change the layout of the members in tcp_sock! */
-struct tcp_sock {
- struct sock sk;
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
- struct ipv6_pinfo *pinet6;
-#endif
- struct inet_opt inet;
- struct tcp_opt tcp;
-};
-
-static inline struct tcp_opt * tcp_sk(const struct sock *__sk)
+static inline struct tcp_sock *tcp_sk(const struct sock *sk)
{
- return &((struct tcp_sock *)__sk)->tcp;
+ return (struct tcp_sock *)sk;
}
#endif
git://git.onelab.eu / linux-2.6.git / blobdiff