Differential D11085 Diff 40591 head/sys/netinet/tcp_var.h

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head/sys/netinet/tcp_var.h

Show First 20 Lines • Show All 73 Lines • ▼ Show 20 Lines	struct sackhint {
int sacked_bytes; /*		int sacked_bytes; /*
* Total sacked bytes reported by the		* Total sacked bytes reported by the
* receiver via sack option		* receiver via sack option
*/		*/
uint32_t _pad1[1]; /* TBD */		uint32_t _pad1[1]; /* TBD */
uint64_t _pad[1]; /* TBD */		uint64_t _pad[1]; /* TBD */
};		};

		STAILQ_HEAD(tcp_log_stailq, tcp_log_mem);

/*		/*
* 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 */
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 94 Lines • ▼ Show 20 Lines	/* SACK related state */
u_int t_keepidle; /* time before keepalive probes begin */		u_int t_keepidle; /* time before keepalive probes begin */
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_flags2; /* More tcpcb flags storage */		u_int t_flags2; /* More tcpcb flags storage */
		int t_logstate; /* State of "black box" logging */
		struct tcp_log_stailq t_logs; /* Log buffer */
		int t_lognum; /* Number of log entries */
		uint32_t t_logsn; /* Log "serial number" */
		struct tcp_log_id_node *t_lin;
		struct tcp_log_id_bucket *t_lib;
		const char t_output_caller; / Function that called tcp_output */
struct tcp_function_block t_fb;/ TCP function call block */		struct tcp_function_block t_fb;/ TCP function call block */
void t_fb_ptr; / Pointer to t_fb specific data */		void t_fb_ptr; / Pointer to t_fb specific data */
uint8_t t_tfo_client_cookie_len; /* TCP Fast Open client cookie length */		uint8_t t_tfo_client_cookie_len; /* TCP Fast Open client cookie length */
unsigned int t_tfo_pending; / TCP Fast Open server pending counter */		unsigned int t_tfo_pending; / TCP Fast Open server pending counter */
union {		union {
uint8_t client[TCP_FASTOPEN_MAX_COOKIE_LEN];		uint8_t client[TCP_FASTOPEN_MAX_COOKIE_LEN];
uint64_t server;		uint64_t server;
} t_tfo_cookie; /* TCP Fast Open cookie to send */		} t_tfo_cookie; /* TCP Fast Open cookie to send */
▲ Show 20 Lines • Show All 62 Lines • ▼ Show 20 Lines	struct tcp_function_block {
void (tfb_tcp_timer_activate)(struct tcpcb ,		void (tfb_tcp_timer_activate)(struct tcpcb ,
uint32_t, u_int);		uint32_t, u_int);
int (tfb_tcp_timer_active)(struct tcpcb , uint32_t);		int (tfb_tcp_timer_active)(struct tcpcb , uint32_t);
void (tfb_tcp_timer_stop)(struct tcpcb , uint32_t);		void (tfb_tcp_timer_stop)(struct tcpcb , uint32_t);
void (tfb_tcp_rexmit_tmr)(struct tcpcb );		void (tfb_tcp_rexmit_tmr)(struct tcpcb );
int (tfb_tcp_handoff_ok)(struct tcpcb );		int (tfb_tcp_handoff_ok)(struct tcpcb );
volatile uint32_t tfb_refcnt;		volatile uint32_t tfb_refcnt;
uint32_t tfb_flags;		uint32_t tfb_flags;
		uint8_t tfb_id;
};		};

struct tcp_function {		struct tcp_function {
TAILQ_ENTRY(tcp_function) tf_next;		TAILQ_ENTRY(tcp_function) tf_next;
char tf_name[TCP_FUNCTION_NAME_LEN_MAX];		char tf_name[TCP_FUNCTION_NAME_LEN_MAX];
struct tcp_function_block *tf_fb;		struct tcp_function_block *tf_fb;
};		};

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/*		/*
* Flags for the t_oobflags field.		* Flags for the t_oobflags field.
*/		*/
#define TCPOOB_HAVEDATA 0x01		#define TCPOOB_HAVEDATA 0x01
#define TCPOOB_HADDATA 0x02		#define TCPOOB_HADDATA 0x02

/*		/*
* Flags for PLPMTU handling, t_flags2		* Flags for the extended TCP flags field, t_flags2
*/		*/
#define TF2_PLPMTU_BLACKHOLE 0x00000001 /* Possible PLPMTUD Black Hole. */		#define TF2_PLPMTU_BLACKHOLE 0x00000001 /* Possible PLPMTUD Black Hole. */
#define TF2_PLPMTU_PMTUD 0x00000002 /* Allowed to attempt PLPMTUD. */		#define TF2_PLPMTU_PMTUD 0x00000002 /* Allowed to attempt PLPMTUD. */
#define TF2_PLPMTU_MAXSEGSNT 0x00000004 /* Last seg sent was full seg. */		#define TF2_PLPMTU_MAXSEGSNT 0x00000004 /* Last seg sent was full seg. */
		#define TF2_LOG_AUTO 0x00000008 /* Session is auto-logging. */

/*		/*
* Structure to hold TCP options that are only used during segment		* Structure to hold TCP options that are only used during segment
* processing (in tcp_input), but not held in the tcpcb.		* processing (in tcp_input), but not held in the tcpcb.
* It's basically used to reduce the number of parameters		* It's basically used to reduce the number of parameters
* to tcp_dooptions and tcp_addoptions.		* to tcp_dooptions and tcp_addoptions.
* The binary order of the to_flags is relevant for packing of the		* The binary order of the to_flags is relevant for packing of the
* options in tcp_addoptions.		* options in tcp_addoptions.
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* Evil hack: declare only if in_pcb.h and sys/socketvar.h have been		* Evil hack: declare only if in_pcb.h and sys/socketvar.h have been
* included. Not all of our clients do.		* included. Not all of our clients do.
*/		*/
#if defined(_NETINET_IN_PCB_H_) && defined(_SYS_SOCKETVAR_H_)		#if defined(_NETINET_IN_PCB_H_) && defined(_SYS_SOCKETVAR_H_)
struct xtcpcb {		struct xtcpcb {
size_t xt_len; /* length of this structure */		size_t xt_len; /* length of this structure */
struct xinpcb xt_inp;		struct xinpcb xt_inp;
char xt_stack[TCP_FUNCTION_NAME_LEN_MAX]; /* (s) */		char xt_stack[TCP_FUNCTION_NAME_LEN_MAX]; /* (s) */
		char xt_logid[TCP_LOG_ID_LEN]; /* (s) */
int64_t spare64[8];		int64_t spare64[8];
int32_t t_state; /* (s,p) */		int32_t t_state; /* (s,p) */
uint32_t t_flags; /* (s,p) */		uint32_t t_flags; /* (s,p) */
int32_t t_sndzerowin; /* (s) */		int32_t t_sndzerowin; /* (s) */
int32_t t_sndrexmitpack; /* (s) */		int32_t t_sndrexmitpack; /* (s) */
int32_t t_rcvoopack; /* (s) */		int32_t t_rcvoopack; /* (s) */
int32_t t_rcvtime; /* (s) */		int32_t t_rcvtime; /* (s) */
int32_t tt_rexmt; /* (s) */		int32_t tt_rexmt; /* (s) */
int32_t tt_persist; /* (s) */		int32_t tt_persist; /* (s) */
int32_t tt_keep; /* (s) */		int32_t tt_keep; /* (s) */
int32_t tt_2msl; /* (s) */		int32_t tt_2msl; /* (s) */
int32_t tt_delack; /* (s) */		int32_t tt_delack; /* (s) */
		int32_t t_logstate; /* (3) */
int32_t spare32[32];		int32_t spare32[32];
} __aligned(8);		} __aligned(8);

#ifdef _KERNEL		#ifdef _KERNEL
void tcp_inptoxtp(const struct inpcb , struct xtcpcb );		void tcp_inptoxtp(const struct inpcb , struct xtcpcb );
#endif		#endif
#endif		#endif

		/*
		* TCP function name-to-id mapping exported to user-land via sysctl(3).
		*/
		struct tcp_function_id {
		uint8_t tfi_id;
		char tfi_name[TCP_FUNCTION_NAME_LEN_MAX];
		};

/*		/*
* Identifiers for TCP sysctl nodes		* Identifiers for TCP sysctl nodes
*/		*/
#define TCPCTL_DO_RFC1323 1 /* use RFC-1323 extensions */		#define TCPCTL_DO_RFC1323 1 /* use RFC-1323 extensions */
#define TCPCTL_MSSDFLT 3 /* MSS default */		#define TCPCTL_MSSDFLT 3 /* MSS default */
#define TCPCTL_STATS 4 /* statistics */		#define TCPCTL_STATS 4 /* statistics */
#define TCPCTL_RTTDFLT 5 /* default RTT estimate */		#define TCPCTL_RTTDFLT 5 /* default RTT estimate */
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