Differential D4055 Diff 11335 head/sys/netinet/tcp_var.h

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head/sys/netinet/tcp_var.h

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struct tcptemp {		struct tcptemp {
u_char tt_ipgen[40]; /* the size must be of max ip header, now IPv6 */		u_char tt_ipgen[40]; /* the size must be of max ip header, now IPv6 */
struct tcphdr tt_t;		struct tcphdr tt_t;
};		};

#define tcp6cb tcpcb /* for KAME src sync over BSD's /		#define tcp6cb tcpcb /* for KAME src sync over BSD's /

/*		/*
		* TODO: We yet need to brave plowing in
		* to tcp_input() and the pru_usrreq() block.
		* Right now these go to the old standards which
		* are somewhat ok, but in the long term may
		* need to be changed. If we do tackle tcp_input()
		* then we need to get rid of the tcp_do_segment()
		* function below.
		*/
		/* Flags for tcp functions */
		#define TCP_FUNC_BEING_REMOVED 0x01 /* Can no longer be referenced */
		struct tcpcb;
		struct inpcb;
		struct sockopt;
		struct socket;

		struct tcp_function_block {
		char tfb_tcp_block_name[TCP_FUNCTION_NAME_LEN_MAX];
		int (tfb_tcp_output)(struct tcpcb );
		void (tfb_tcp_do_segment)(struct mbuf , struct tcphdr *,
		struct socket , struct tcpcb ,
		int, int, uint8_t,
		int);
		int (tfb_tcp_ctloutput)(struct socket so, struct sockopt *sopt,
		struct inpcb inp, struct tcpcb tp);
		/* Optional memory allocation/free routine */
		void (tfb_tcp_fb_init)(struct tcpcb );
		void (tfb_tcp_fb_fini)(struct tcpcb );
		/* Optional timers, must define all if you define one */
		int (tfb_tcp_timer_stop_all)(struct tcpcb );
		int (tfb_tcp_timers_left)(struct tcpcb );
		void (tfb_tcp_timer_activate)(struct tcpcb ,
		uint32_t, u_int);
		int (tfb_tcp_timer_active)(struct tcpcb , uint32_t);
		void (tfb_tcp_timer_stop)(struct tcpcb , uint32_t);
		volatile uint32_t tfb_refcnt;
		uint32_t tfb_flags;
		};

		struct tcp_function {
		TAILQ_ENTRY(tcp_function) tf_next;
		struct tcp_function_block *tf_fb;
		};

		TAILQ_HEAD(tcp_funchead, tcp_function);

		/*
* Tcp control block, one per tcp; fields:		* Tcp control block, one per tcp; fields:
* Organized for 16 byte cacheline efficiency.		* Organized for 16 byte cacheline efficiency.
*/		*/
struct tcpcb {		struct tcpcb {
struct tsegqe_head t_segq; /* segment reassembly queue */		struct tsegqe_head t_segq; /* segment reassembly queue */
void t_pspare[2]; / new reassembly queue */		void t_pspare[2]; / new reassembly queue */
int t_segqlen; /* segment reassembly queue length */		int t_segqlen; /* segment reassembly queue length */
int t_dupacks; /* consecutive dup acks recd */		int t_dupacks; /* consecutive dup acks recd */
▲ Show 20 Lines • Show All 101 Lines • ▼ Show 20 Lines	/* SACK related state */
u_int t_keepintvl; /* interval between keepalives */		u_int t_keepintvl; /* interval between keepalives */
u_int t_keepcnt; /* number of keepalives before close */		u_int t_keepcnt; /* number of keepalives before close */

u_int t_tsomax; /* TSO total burst length limit in bytes */		u_int t_tsomax; /* TSO total burst length limit in bytes */
u_int t_tsomaxsegcount; /* TSO maximum segment count */		u_int t_tsomaxsegcount; /* TSO maximum segment count */
u_int t_tsomaxsegsize; /* TSO maximum segment size in bytes */		u_int t_tsomaxsegsize; /* TSO maximum segment size in bytes */
u_int t_pmtud_saved_maxopd; /* pre-blackhole MSS */		u_int t_pmtud_saved_maxopd; /* pre-blackhole MSS */
u_int t_flags2; /* More tcpcb flags storage */		u_int t_flags2; /* More tcpcb flags storage */

uint32_t t_ispare[8]; /* 5 UTO, 3 TBD */		uint32_t t_ispare[8]; /* 5 UTO, 3 TBD */
void t_pspare2[4]; / 1 TCP_SIGNATURE, 3 TBD */		struct tcp_function_block t_fb;/ TCP function call block */
		void t_fb_ptr; / Pointer to t_fb specific data */
		void t_pspare2[2]; / 1 TCP_SIGNATURE, 1 TBD */
#if defined(_KERNEL) && defined(TCPPCAP)		#if defined(_KERNEL) && defined(TCPPCAP)
struct mbufq t_inpkts; /* List of saved input packets. */		struct mbufq t_inpkts; /* List of saved input packets. */
struct mbufq t_outpkts; /* List of saved output packets. */		struct mbufq t_outpkts; /* List of saved output packets. */
#ifdef _LP64		#ifdef _LP64
uint64_t _pad[0]; /* all used! */		uint64_t _pad[0]; /* all used! */
#else		#else
uint64_t _pad[2]; /* 2 are available */		uint64_t _pad[2]; /* 2 are available */
#endif /* _LP64 */		#endif /* _LP64 */
▲ Show 20 Lines • Show All 308 Lines • ▼ Show 20 Lines	struct tcpstat {
uint64_t tcps_sig_err_nosigopt; /* No signature provided by segment */		uint64_t tcps_sig_err_nosigopt; /* No signature provided by segment */

uint64_t _pad[12]; /* 6 UTO, 6 TBD */		uint64_t _pad[12]; /* 6 UTO, 6 TBD */
};		};

#define tcps_rcvmemdrop tcps_rcvreassfull /* compat */		#define tcps_rcvmemdrop tcps_rcvreassfull /* compat */

#ifdef _KERNEL		#ifdef _KERNEL
		#define TI_UNLOCKED 1
		#define TI_RLOCKED 2
#include <sys/counter.h>		#include <sys/counter.h>

VNET_PCPUSTAT_DECLARE(struct tcpstat, tcpstat); /* tcp statistics */		VNET_PCPUSTAT_DECLARE(struct tcpstat, tcpstat); /* tcp statistics */
/*		/*
* In-kernel consumers can use these accessor macros directly to update		* In-kernel consumers can use these accessor macros directly to update
* stats.		* stats.
*/		*/
#define TCPSTAT_ADD(name, val) \		#define TCPSTAT_ADD(name, val) \
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void tcp_fini(void *);		void tcp_fini(void *);
char tcp_log_addrs(struct in_conninfo , struct tcphdr , void ,		char tcp_log_addrs(struct in_conninfo , struct tcphdr , void ,
const void *);		const void *);
char tcp_log_vain(struct in_conninfo , struct tcphdr , void ,		char tcp_log_vain(struct in_conninfo , struct tcphdr , void ,
const void *);		const void *);
int tcp_reass(struct tcpcb , struct tcphdr , int , struct mbuf );		int tcp_reass(struct tcpcb , struct tcphdr , int , struct mbuf );
void tcp_reass_global_init(void);		void tcp_reass_global_init(void);
void tcp_reass_flush(struct tcpcb *);		void tcp_reass_flush(struct tcpcb *);
		void tcp_dooptions(struct tcpopt , u_char , int, int);
		void tcp_dropwithreset(struct mbuf , struct tcphdr ,
		struct tcpcb *, int, int);
		void tcp_pulloutofband(struct socket *,
		struct tcphdr , struct mbuf , int);
		void tcp_xmit_timer(struct tcpcb *, int);
		void tcp_newreno_partial_ack(struct tcpcb , struct tcphdr );
		void cc_ack_received(struct tcpcb tp, struct tcphdr th,
		uint16_t type);
		void cc_conn_init(struct tcpcb *tp);
		void cc_post_recovery(struct tcpcb tp, struct tcphdr th);
		void cc_cong_signal(struct tcpcb tp, struct tcphdr th, uint32_t type);
		void hhook_run_tcp_est_in(struct tcpcb *tp,
		struct tcphdr th, struct tcpopt to);

int tcp_input(struct mbuf *, int , int);		int tcp_input(struct mbuf *, int , int);
		void tcp_do_segment(struct mbuf , struct tcphdr ,
		struct socket , struct tcpcb , int, int, uint8_t,
		int);

		int register_tcp_functions(struct tcp_function_block *blk, int wait);
		int deregister_tcp_functions(struct tcp_function_block *blk);
		struct tcp_function_block find_and_ref_tcp_functions(struct tcp_function_set fs);
		struct tcp_function_block find_and_ref_tcp_fb(struct tcp_function_block blk);
		int tcp_default_ctloutput(struct socket so, struct sockopt sopt, struct inpcb inp, struct tcpcb tp);

u_long tcp_maxmtu(struct in_conninfo , struct tcp_ifcap );		u_long tcp_maxmtu(struct in_conninfo , struct tcp_ifcap );
u_long tcp_maxmtu6(struct in_conninfo , struct tcp_ifcap );		u_long tcp_maxmtu6(struct in_conninfo , struct tcp_ifcap );
void tcp_mss_update(struct tcpcb , int, int, struct hc_metrics_lite ,		void tcp_mss_update(struct tcpcb , int, int, struct hc_metrics_lite ,
struct tcp_ifcap *);		struct tcp_ifcap *);
void tcp_mss(struct tcpcb *, int);		void tcp_mss(struct tcpcb *, int);
int tcp_mssopt(struct in_conninfo *);		int tcp_mssopt(struct in_conninfo *);
struct inpcb *		struct inpcb *
tcp_drop_syn_sent(struct inpcb *, int);		tcp_drop_syn_sent(struct inpcb *, int);
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void tcp_clean_sackreport(struct tcpcb *tp);		void tcp_clean_sackreport(struct tcpcb *tp);
void tcp_sack_adjust(struct tcpcb *tp);		void tcp_sack_adjust(struct tcpcb *tp);
struct sackhole tcp_sack_output(struct tcpcb tp, int *sack_bytes_rexmt);		struct sackhole tcp_sack_output(struct tcpcb tp, int *sack_bytes_rexmt);
void tcp_sack_partialack(struct tcpcb , struct tcphdr );		void tcp_sack_partialack(struct tcpcb , struct tcphdr );
void tcp_free_sackholes(struct tcpcb *tp);		void tcp_free_sackholes(struct tcpcb *tp);
int tcp_newreno(struct tcpcb , struct tcphdr );		int tcp_newreno(struct tcpcb , struct tcphdr );
u_long tcp_seq_subtract(u_long, u_long );		u_long tcp_seq_subtract(u_long, u_long );
int tcp_compute_pipe(struct tcpcb *);		int tcp_compute_pipe(struct tcpcb *);

void cc_cong_signal(struct tcpcb tp, struct tcphdr th, uint32_t type);

static inline void		static inline void
tcp_fields_to_host(struct tcphdr *th)		tcp_fields_to_host(struct tcphdr *th)
{		{

th->th_seq = ntohl(th->th_seq);		th->th_seq = ntohl(th->th_seq);
th->th_ack = ntohl(th->th_ack);		th->th_ack = ntohl(th->th_ack);
th->th_win = ntohs(th->th_win);		th->th_win = ntohs(th->th_win);
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