#include <linux/types.h>
#include <asm/byteorder.h>
+#include <linux/socket.h>
struct tcphdr {
- __u16 source;
- __u16 dest;
- __u32 seq;
- __u32 ack_seq;
+ __be16 source;
+ __be16 dest;
+ __be32 seq;
+ __be32 ack_seq;
#if defined(__LITTLE_ENDIAN_BITFIELD)
__u16 res1:4,
doff:4,
#else
#error "Adjust your <asm/byteorder.h> defines"
#endif
- __u16 window;
- __u16 check;
- __u16 urg_ptr;
-};
-
-
-enum {
- TCP_ESTABLISHED = 1,
- TCP_SYN_SENT,
- TCP_SYN_RECV,
- TCP_FIN_WAIT1,
- TCP_FIN_WAIT2,
- TCP_TIME_WAIT,
- TCP_CLOSE,
- TCP_CLOSE_WAIT,
- TCP_LAST_ACK,
- TCP_LISTEN,
- TCP_CLOSING, /* now a valid state */
-
- TCP_MAX_STATES /* Leave at the end! */
-};
-
-#define TCP_STATE_MASK 0xF
-#define TCP_ACTION_FIN (1 << 7)
-
-enum {
- TCPF_ESTABLISHED = (1 << 1),
- TCPF_SYN_SENT = (1 << 2),
- TCPF_SYN_RECV = (1 << 3),
- TCPF_FIN_WAIT1 = (1 << 4),
- TCPF_FIN_WAIT2 = (1 << 5),
- TCPF_TIME_WAIT = (1 << 6),
- TCPF_CLOSE = (1 << 7),
- TCPF_CLOSE_WAIT = (1 << 8),
- TCPF_LAST_ACK = (1 << 9),
- TCPF_LISTEN = (1 << 10),
- TCPF_CLOSING = (1 << 11)
+ __be16 window;
+ __sum16 check;
+ __be16 urg_ptr;
};
/*
*/
union tcp_word_hdr {
struct tcphdr hdr;
- __u32 words[5];
+ __be32 words[5];
};
#define tcp_flag_word(tp) ( ((union tcp_word_hdr *)(tp))->words [3])
#define TCP_WINDOW_CLAMP 10 /* Bound advertised window */
#define TCP_INFO 11 /* Information about this connection. */
#define TCP_QUICKACK 12 /* Block/reenable quick acks */
+#define TCP_CONGESTION 13 /* Congestion control algorithm */
+#define TCP_MD5SIG 14 /* TCP MD5 Signature (RFC2385) */
#define TCPI_OPT_TIMESTAMPS 1
#define TCPI_OPT_SACK 2
__u32 tcpi_rcv_rtt;
__u32 tcpi_rcv_space;
+
+ __u32 tcpi_total_retrans;
+};
+
+/* for TCP_MD5SIG socket option */
+#define TCP_MD5SIG_MAXKEYLEN 80
+
+struct tcp_md5sig {
+ struct __kernel_sockaddr_storage tcpm_addr; /* address associated */
+ __u16 __tcpm_pad1; /* zero */
+ __u16 tcpm_keylen; /* key length */
+ __u32 __tcpm_pad2; /* zero */
+ __u8 tcpm_key[TCP_MD5SIG_MAXKEYLEN]; /* key (binary) */
};
#ifdef __KERNEL__
-#include <linux/config.h>
#include <linux/skbuff.h>
-#include <linux/ip.h>
+#include <linux/dmaengine.h>
#include <net/sock.h>
+#include <net/inet_connection_sock.h>
+#include <net/inet_timewait_sock.h>
/* 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;
+ u32 start_seq;
+ u32 end_seq;
+};
+
+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 */
+ u16 saw_tstamp : 1, /* Saw TIMESTAMP on last packet */
+ tstamp_ok : 1, /* TIMESTAMP seen on SYN packet */
+ dsack : 1, /* D-SACK is scheduled */
+ wscale_ok : 1, /* Wscale seen on SYN packet */
+ sack_ok : 4, /* SACK seen on SYN packet */
+ snd_wscale : 4, /* Window scaling received from sender */
+ rcv_wscale : 4; /* Window scaling to send to receiver */
+/* SACKs data */
+ u8 eff_sacks; /* Size of SACK array to send with next packet */
+ u8 num_sacks; /* Number of SACK blocks */
+ u16 user_mss; /* mss requested by user in ioctl */
+ u16 mss_clamp; /* Maximal mss, negotiated at connection setup */
};
-struct tcp_opt {
- int tcp_header_len; /* Bytes of tcp header to send */
+struct tcp_request_sock {
+ struct inet_request_sock req;
+#ifdef CONFIG_TCP_MD5SIG
+ /* Only used by TCP MD5 Signature so far. */
+ struct tcp_request_sock_ops *af_specific;
+#endif
+ u32 rcv_isn;
+ u32 snt_isn;
+};
+
+static inline struct tcp_request_sock *tcp_rsk(const struct request_sock *req)
+{
+ return (struct tcp_request_sock *)req;
+}
+
+struct tcp_sock {
+ /* inet_connection_sock has to be the first member of tcp_sock */
+ struct inet_connection_sock inet_conn;
+ u16 tcp_header_len; /* Bytes of tcp header to send */
+ u16 xmit_size_goal; /* Goal for segmenting output packets */
/*
* Header prediction flags
* 0x5?10 << 16 + snd_wnd in net byte order
*/
- __u32 pred_flags;
+ __be32 pred_flags;
/*
* RFC793 variables by their proper names. This means you can
* read the code and the spec side by side (and laugh ...)
* See RFC793 and RFC1122. The RFC writes these in capitals.
*/
- __u32 rcv_nxt; /* What we want to receive next */
- __u32 snd_nxt; /* Next sequence we send */
-
- __u32 snd_una; /* First byte we want an ack for */
- __u32 snd_sml; /* Last byte of the most recently transmitted small packet */
- __u32 rcv_tstamp; /* timestamp of last received ACK (for keepalives) */
- __u32 lsndtime; /* timestamp of last sent data packet (for restart window) */
- struct tcp_bind_bucket *bind_hash;
- /* Delayed ACK control data */
- struct {
- __u8 pending; /* ACK is pending */
- __u8 quick; /* Scheduled number of quick acks */
- __u8 pingpong; /* The session is interactive */
- __u8 blocked; /* Delayed ACK was blocked by socket lock*/
- __u32 ato; /* Predicted tick of soft clock */
- unsigned long timeout; /* Currently scheduled timeout */
- __u32 lrcvtime; /* timestamp of last received data packet*/
- __u16 last_seg_size; /* Size of last incoming segment */
- __u16 rcv_mss; /* MSS used for delayed ACK decisions */
- } ack;
+ u32 rcv_nxt; /* What we want to receive next */
+ u32 snd_nxt; /* Next sequence we send */
+
+ u32 snd_una; /* First byte we want an ack for */
+ u32 snd_sml; /* Last byte of the most recently transmitted small packet */
+ u32 rcv_tstamp; /* timestamp of last received ACK (for keepalives) */
+ u32 lsndtime; /* timestamp of last sent data packet (for restart window) */
/* Data for direct copy to user */
struct {
struct iovec *iov;
int memory;
int len;
+#ifdef CONFIG_NET_DMA
+ /* members for async copy */
+ struct dma_chan *dma_chan;
+ int wakeup;
+ struct dma_pinned_list *pinned_list;
+ dma_cookie_t dma_cookie;
+#endif
} ucopy;
- __u32 snd_wl1; /* Sequence for window update */
- __u32 snd_wnd; /* The window we expect to receive */
- __u32 max_window; /* Maximal window ever seen from peer */
- __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. */
-
- __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 queue_shrunk; /* Write queue has been shrunk recently.*/
- __u8 defer_accept; /* User waits for some data after accept() */
+ u32 snd_wl1; /* Sequence for window update */
+ u32 snd_wnd; /* The window we expect to receive */
+ u32 max_window; /* Maximal window ever seen from peer */
+ u32 mss_cache; /* Cached effective mss, not including SACKS */
-/* RTT measurement */
- __u8 backoff; /* backoff */
- __u32 srtt; /* smothed round trip time << 3 */
- __u32 mdev; /* medium deviation */
- __u32 mdev_max; /* maximal mdev for the last rtt period */
- __u32 rttvar; /* smoothed mdev_max */
- __u32 rtt_seq; /* sequence number to update rttvar */
- __u32 rto; /* retransmit timeout */
+ u32 window_clamp; /* Maximal window to advertise */
+ u32 rcv_ssthresh; /* Current window clamp */
- __u32 packets_out; /* Packets which are "in flight" */
- __u32 left_out; /* Packets which leaved network */
- __u32 retrans_out; /* Retransmitted packets out */
+ u32 frto_highmark; /* snd_nxt when RTO occurred */
+ u8 reordering; /* Packet reordering metric. */
+ u8 frto_counter; /* Number of new acks after RTO */
+ u8 nonagle; /* Disable Nagle algorithm? */
+ u8 keepalive_probes; /* num of allowed keep alive probes */
+/* RTT measurement */
+ 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 rtt_seq; /* sequence number to update rttvar */
+
+ u32 packets_out; /* Packets which are "in flight" */
+ u32 left_out; /* Packets which leaved network */
+ u32 retrans_out; /* Retransmitted packets out */
+/*
+ * Options received (usually on last packet, some only on SYN packets).
+ */
+ struct tcp_options_received rx_opt;
/*
* Slow start and congestion control (see also Nagle, and Karn & Partridge)
*/
- __u32 snd_ssthresh; /* Slow start size threshold */
- __u32 snd_cwnd; /* Sending congestion window */
- __u16 snd_cwnd_cnt; /* Linear increase counter */
- __u16 snd_cwnd_clamp; /* Do not allow snd_cwnd to grow above this */
- __u32 snd_cwnd_used;
- __u32 snd_cwnd_stamp;
-
- /* Two commonly used timers in both sender and receiver paths. */
- unsigned long timeout;
- struct timer_list retransmit_timer; /* Resend (no ack) */
- struct timer_list delack_timer; /* Ack delay */
+ u32 snd_ssthresh; /* Slow start size threshold */
+ u32 snd_cwnd; /* Sending congestion window */
+ u16 snd_cwnd_cnt; /* Linear increase counter */
+ u16 snd_cwnd_clamp; /* Do not allow snd_cwnd to grow above this */
+ u32 snd_cwnd_used;
+ u32 snd_cwnd_stamp;
struct sk_buff_head out_of_order_queue; /* Out of order segments go here */
- struct tcp_func *af_specific; /* Operations which are AF_INET{4,6} specific */
- struct sk_buff *send_head; /* Front of stuff to transmit */
-
- __u32 rcv_wnd; /* Current receiver window */
- __u32 rcv_wup; /* rcv_nxt on last window update sent */
- __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) */
+ u32 rcv_wnd; /* Current receiver window */
+ u32 rcv_wup; /* rcv_nxt on last window update sent */
+ 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 */
/* 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 */
- __u32 sacked_out; /* SACK'd packets */
- __u32 fackets_out; /* FACK'd packets */
- __u32 high_seq; /* snd_nxt at onset of congestion */
-
- __u32 retrans_stamp; /* Timestamp of the last retransmit,
+ struct tcp_sack_block recv_sack_cache[4];
+
+ /* from STCP, retrans queue hinting */
+ struct sk_buff* lost_skb_hint;
+
+ struct sk_buff *scoreboard_skb_hint;
+ struct sk_buff *retransmit_skb_hint;
+ struct sk_buff *forward_skb_hint;
+ struct sk_buff *fastpath_skb_hint;
+
+ int fastpath_cnt_hint;
+ int lost_cnt_hint;
+ int retransmit_cnt_hint;
+ int forward_cnt_hint;
+
+ u16 advmss; /* Advertised MSS */
+ u16 prior_ssthresh; /* ssthresh saved at recovery start */
+ 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 */
+
+ u32 retrans_stamp; /* Timestamp of the last retransmit,
* also used in SYN-SENT to remember stamp of
* the first SYN. */
- __u32 undo_marker; /* tracking retrans started here. */
+ u32 undo_marker; /* tracking retrans started here. */
int undo_retrans; /* number of undoable retransmissions. */
- __u32 urg_seq; /* Seq of received urgent pointer */
- __u16 urg_data; /* Saved octet of OOB data and control flags */
- __u8 pending; /* Scheduled timer event */
- __u8 urg_mode; /* In urgent mode */
- __u32 snd_up; /* Urgent pointer */
-
- /* 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).
- * This lock is acquired in read mode only from listening_get_next()
- * and it's acquired in write mode _only_ from code that is actively
- * changing the syn_wait_queue. All readers that are holding
- * the master sock lock don't need to grab this lock in read mode
- * too as the syn_wait_queue writes are always protected from
- * the main sock lock.
- */
- rwlock_t syn_wait_lock;
- struct tcp_listen_opt *listen_opt;
-
- /* FIFO of established children */
- struct open_request *accept_queue;
- struct open_request *accept_queue_tail;
-
- int write_pending; /* A write to socket waits to start. */
+ u32 urg_seq; /* Seq of received urgent pointer */
+ u16 urg_data; /* Saved octet of OOB data and control flags */
+ u8 urg_mode; /* In urgent mode */
+ u8 ecn_flags; /* ECN status bits. */
+ u32 snd_up; /* Urgent pointer */
+
+ u32 total_retrans; /* Total retransmits for entire connection */
+ u32 bytes_acked; /* Appropriate Byte Counting - RFC3465 */
unsigned int keepalive_time; /* time before keep alive takes place */
unsigned int keepalive_intvl; /* time interval between keep alive probes */
unsigned long last_synq_overflow;
+ u32 tso_deferred;
+
/* Receiver side RTT estimation */
struct {
- __u32 rtt;
- __u32 seq;
- __u32 time;
+ u32 rtt;
+ u32 seq;
+ u32 time;
} rcv_rtt_est;
/* Receiver queue space */
struct {
int space;
- __u32 seq;
- __u32 time;
+ u32 seq;
+ u32 time;
} rcvq_space;
-/* TCP Westwood structure */
- struct {
- __u32 bw_ns_est; /* first bandwidth estimation..not too smoothed 8) */
- __u32 bw_est; /* bandwidth estimate */
- __u32 rtt_win_sx; /* here starts a new evaluation... */
- __u32 bk;
- __u32 snd_una; /* used for evaluating the number of acked bytes */
- __u32 cumul_ack;
- __u32 accounted;
- __u32 rtt;
- __u32 rtt_min; /* minimum observed RTT */
- } westwood;
-
-/* Vegas variables */
- struct {
- __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) */
- __u32 baseRTT; /* the min of all Vegas RTT measurements seen (in usec) */
- } vegas;
-
- /* BI TCP Parameters */
+/* TCP-specific MTU probe information. */
struct {
- __u32 cnt; /* increase cwnd by 1 after this number of ACKs */
- __u32 last_max_cwnd; /* last maximium snd_cwnd */
- __u32 last_cwnd; /* the last snd_cwnd */
- } bictcp;
+ u32 probe_seq_start;
+ u32 probe_seq_end;
+ } mtu_probe;
+
+#ifdef CONFIG_TCP_MD5SIG
+/* TCP AF-Specific parts; only used by MD5 Signature support so far */
+ struct tcp_sock_af_ops *af_specific;
+
+/* TCP MD5 Signagure Option information */
+ struct tcp_md5sig_info *md5sig_info;
+#endif
};
-/* 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;
+static inline struct tcp_sock *tcp_sk(const struct sock *sk)
+{
+ return (struct tcp_sock *)sk;
+}
+
+struct tcp_timewait_sock {
+ struct inet_timewait_sock tw_sk;
+ u32 tw_rcv_nxt;
+ u32 tw_snd_nxt;
+ u32 tw_rcv_wnd;
+ u32 tw_ts_recent;
+ long tw_ts_recent_stamp;
+#ifdef CONFIG_TCP_MD5SIG
+ u16 tw_md5_keylen;
+ u8 tw_md5_key[TCP_MD5SIG_MAXKEYLEN];
#endif
- struct inet_opt inet;
- struct tcp_opt tcp;
};
-static inline struct tcp_opt * tcp_sk(const struct sock *__sk)
+static inline struct tcp_timewait_sock *tcp_twsk(const struct sock *sk)
{
- return &((struct tcp_sock *)__sk)->tcp;
+ return (struct tcp_timewait_sock *)sk;
}
#endif
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