uip_tcp.h File Reference

#include "uip.h"
#include "uip_ip.h"
#include "uip_pbuf.h"

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Classes
struct	uip_tcp_hdr
struct	uip_tcpseg
struct	uip_tcp_pcb
struct	uip_tcp_pcb_listen
union	uip_tcp_listen_pcbs_t

Macros
#define	UIP_TCP_PRIO_MIN   1
#define	UIP_TCP_PRIO_NORMAL   64
#define	UIP_TCP_PRIO_MAX   127
#define	UIP_TCP_KEEPDEFAULT   7200000 /* KEEPALIVE timer in miliseconds */
#define	UIP_TCP_KEEPINTVL   75000 /* Time between KEEPALIVE probes in miliseconds */
#define	UIP_TCP_KEEPCNT   9 /* Counter for KEEPALIVE probes */
#define	UIP_TCP_MAXIDLE   (UIP_TCP_KEEPCNT*UIP_TCP_KEEPINTVL) /* Maximum KEEPALIVE probe time */
#define	UIP_TCP_TMR_INTERVAL   250
#define	UIP_TCP_SLOW_INTERVAL   (2*UIP_TCP_TMR_INTERVAL)
#define	UIP_TCP_OOSEQ_TIMEOUT   6 /* x RTO */
#define	UIP_TCP_MSL   60000 /* The maximum segment lifetime in microseconds */
#define	UIP_TCP_SEQ_LT(a, b)   ((s32_t)((a)-(b)) < 0)
#define	UIP_TCP_SEQ_LEQ(a, b)   ((s32_t)((a)-(b)) <= 0)
#define	UIP_TCP_SEQ_GT(a, b)   ((s32_t)((a)-(b)) > 0)
#define	UIP_TCP_SEQ_GEQ(a, b)   ((s32_t)((a)-(b)) >= 0)
#define	UIP_TCP_SEQ_BETWEEN(a, b, c)   (UIP_TCP_SEQ_GEQ(a,b) && UIP_TCP_SEQ_LEQ(a,c))
#define	UIP_TCP_FIN   0x01U
#define	UIP_TCP_SYN   0x02U
#define	UIP_TCP_RST   0x04U
#define	UIP_TCP_PSH   0x08U
#define	UIP_TCP_ACK   0x10U
#define	UIP_TCP_URG   0x20U
#define	UIP_TCP_ECE   0x40U
#define	UIP_TCP_CWR   0x80U
#define	UIP_TCP_FLAGS   0x3fU
#define	UIP_TCP_HLEN   20
#define	UIP_TCP_FIN_WAIT_TIMEOUT   20000 /* milliseconds */
#define	UIP_TCP_SYN_RCVD_TIMEOUT   20000 /* milliseconds */
#define	UIP_TCPH_OFFSET(phdr)   (ntohs((phdr)->_hdrlen_rsvd_flags) >> 8)
#define	UIP_TCPH_HDRLEN(phdr)   (ntohs((phdr)->_hdrlen_rsvd_flags) >> 12)
#define	UIP_TCPH_FLAGS(phdr)   (ntohs((phdr)->_hdrlen_rsvd_flags) & UIP_TCP_FLAGS)
#define	UIP_TCPH_OFFSET_SET(phdr, offset)   (phdr)->_hdrlen_rsvd_flags = htons(((offset) << 8)|UIP_TCPH_FLAGS(phdr))
#define	UIP_TCPH_HDRLEN_SET(phdr, len)   (phdr)->_hdrlen_rsvd_flags = htons(((len)<<12)|UIP_TCPH_FLAGS(phdr))
#define	UIP_TCPH_FLAGS_SET(phdr, flags)   (phdr)->_hdrlen_rsvd_flags = htons((ntohs((phdr)->_hdrlen_rsvd_flags)&~UIP_TCP_FLAGS)|(flags))
#define	UIP_TCPH_SET_FLAG(phdr, flags)   (phdr)->_hdrlen_rsvd_flags = htons(ntohs((phdr)->_hdrlen_rsvd_flags)|(flags))
#define	UIP_TCPH_UNSET_FLAG(phdr, flags)   (phdr)->_hdrlen_rsvd_flags = htons(ntohs((phdr)->_hdrlen_rsvd_flags)|(UIP_TCPH_FLAGS(phdr)&~(flags)) )
#define	UIP_TCP_TCPLEN(seg)   ((seg)->len+((UIP_TCPH_FLAGS((seg)->tcphdr)&UIP_TCP_FIN || UIP_TCPH_FLAGS((seg)->tcphdr)&UIP_TCP_SYN)?1:0))
#define	UIP_TCP_REG(pcbs, npcb)
#define	UIP_TCP_RMV(pcbs, npcb)
#define	uip_tcp_sndbuf(pcb)   (pcb)->snd_buf
#define	uip_tcp_acknow(pcb)
#define	uip_tcp_ack(pcb)
#define	UIP_TF_ACK_DELAY   (u8_t)0x01U /* Delayed ACK. */
#define	UIP_TF_ACK_NOW   (u8_t)0x02U /* Immediate ACK. */
#define	UIP_TF_INFR   (u8_t)0x04U /* In fast recovery. */
#define	UIP_TF_RESET   (u8_t)0x08U /* Connection was reset. */
#define	UIP_TF_CLOSED   (u8_t)0x10U /* Connection was sucessfully closed. */
#define	UIP_TF_GOT_FIN   (u8_t)0x20U /* Connection was closed by the remote end. */
#define	UIP_TF_NODELAY   (u8_t)0x40U /* Disable Nagle algorithm */

Enumerations
enum	uip_tcp_state {   UIP_CLOSED = 0, UIP_LISTEN = 1, UIP_SYN_SENT = 2, UIP_SYN_RCVD = 3,   UIP_ESTABLISHED = 4, UIP_FIN_WAIT_1 = 5, UIP_FIN_WAIT_2 = 6, UIP_CLOSE_WAIT = 7,   UIP_CLOSING = 8, UIP_LAST_ACK = 9, UIP_TIME_WAIT = 10 }

Functions
void	uip_tcp_tmr ()
void	uip_tcp_slowtmr ()
void	uip_tcp_fasttmr ()
void	uip_tcp_init ()
void	uip_tcp_rst (u32_t seqno, u32_t ackno, struct uip_ip_addr *lipaddr, struct uip_ip_addr *ripaddr, u16_t lport, u16_t rport)
void	uip_tcp_abort (struct uip_tcp_pcb *pcb)
void	uip_tcp_pcbremove (struct uip_tcp_pcb **pcblist, struct uip_tcp_pcb *pcb)
void	uip_tcp_pcbpurge (struct uip_tcp_pcb *pcb)
void	uip_tcp_rexmit (struct uip_tcp_pcb *pcb)
void	uip_tcp_rexmit_rto (struct uip_tcp_pcb *pcb)
void	uip_tcp_accept (struct uip_tcp_pcb *pcb, s8_t(*accept)(void *, struct uip_tcp_pcb *, s8_t))
void	uip_tcp_recved (struct uip_tcp_pcb *pcb, u16_t len)
void	uip_tcp_err (struct uip_tcp_pcb *pcb, void(*errf)(void *, s8_t))
void	uip_tcp_keepalive (struct uip_tcp_pcb *pcb)
void	uip_tcp_arg (struct uip_tcp_pcb *pcb, void *arg)
void	uip_tcp_recv (struct uip_tcp_pcb *pcb, s8_t(*recv)(void *, struct uip_tcp_pcb *, struct uip_pbuf *, s8_t))
void	uip_tcp_sent (struct uip_tcp_pcb *pcb, s8_t(*sent)(void *, struct uip_tcp_pcb *, u16_t))
void	uip_tcp_poll (struct uip_tcp_pcb *pcb, s8_t(*poll)(void *, struct uip_tcp_pcb *), u8_t interval)
s8_t	uip_tcp_close (struct uip_tcp_pcb *pcb)
s8_t	uip_tcp_bind (struct uip_tcp_pcb *pcb, struct uip_ip_addr *ipaddr, u16_t port)
s8_t	uip_tcp_write (struct uip_tcp_pcb *pcb, const void *arg, u16_t len, u8_t copy)
struct uip_tcp_pcb *	uip_tcp_listen (struct uip_tcp_pcb *pcb)
struct uip_tcp_pcb *	uip_tcp_new ()
struct uip_tcp_pcb *	uip_tcp_pcballoc (u8_t prio)
s8_t	uip_tcp_sendctrl (struct uip_tcp_pcb *pcb, u8_t flags)
s8_t	uip_tcpoutput (struct uip_tcp_pcb *pcb)
s8_t	uip_tcpenqueue (struct uip_tcp_pcb *pcb, void *arg, u16_t len, u8_t flags, u8_t copy, u8_t *optdata, u8_t optlen)
u8_t	uip_tcpseg_free (struct uip_tcpseg *seg)
u8_t	uip_tcpsegs_free (struct uip_tcpseg *seg)
u32_t	uip_tcpiss_next ()
void	uip_tcpinput (struct uip_pbuf *p, struct uip_netif *inp)
struct uip_tcpseg *	uip_tcpseg_copy (struct uip_tcpseg *seg)

Variables
PACK_STRUCT_BEGIN struct uip_tcp_hdr	PACK_STRUCT_STRUCT
struct uip_tcp_pcb *	uip_tcp_tmp_pcb
struct uip_tcp_pcb *	uip_tcp_active_pcbs
struct uip_tcp_pcb *	uip_tcp_tw_pcbs
union uip_tcp_listen_pcbs_t	uip_tcp_listen_pcbs

Macro Definition Documentation

UIP_TCP_ACK

#define UIP_TCP_ACK   0x10U

uip_tcp_ack

#define uip_tcp_ack

(

pcb

)

Value:

if((pcb)->flags&UIP_TF_ACK_DELAY) { \
 (pcb)->flags &= ~UIP_TF_ACK_DELAY; \
 (pcb)->flags |= UIP_TF_ACK_NOW; \
 uip_tcpoutput((pcb)); \
 } else { \
 (pcb)->flags |= UIP_TF_ACK_DELAY; \
 }

uip_tcp_acknow

#define uip_tcp_acknow

(

pcb

)

Value:

(pcb)->flags |= UIP_TF_ACK_NOW; \
 uip_tcpoutput((pcb))

UIP_TCP_CWR

#define UIP_TCP_CWR   0x80U

UIP_TCP_ECE

#define UIP_TCP_ECE   0x40U

UIP_TCP_FIN

#define UIP_TCP_FIN   0x01U

UIP_TCP_FIN_WAIT_TIMEOUT

#define UIP_TCP_FIN_WAIT_TIMEOUT   20000 /* milliseconds */

UIP_TCP_FLAGS

#define UIP_TCP_FLAGS   0x3fU

UIP_TCP_HLEN

#define UIP_TCP_HLEN   20

UIP_TCP_KEEPCNT

#define UIP_TCP_KEEPCNT   9 /* Counter for KEEPALIVE probes */

UIP_TCP_KEEPDEFAULT

#define UIP_TCP_KEEPDEFAULT   7200000 /* KEEPALIVE timer in miliseconds */

UIP_TCP_KEEPINTVL

#define UIP_TCP_KEEPINTVL   75000 /* Time between KEEPALIVE probes in miliseconds */

UIP_TCP_MAXIDLE

#define UIP_TCP_MAXIDLE   (UIP_TCP_KEEPCNT*UIP_TCP_KEEPINTVL) /* Maximum KEEPALIVE probe time */

UIP_TCP_MSL

#define UIP_TCP_MSL   60000 /* The maximum segment lifetime in microseconds */

UIP_TCP_OOSEQ_TIMEOUT

#define UIP_TCP_OOSEQ_TIMEOUT   6 /* x RTO */

UIP_TCP_PRIO_MAX

#define UIP_TCP_PRIO_MAX   127

UIP_TCP_PRIO_MIN

#define UIP_TCP_PRIO_MIN   1

UIP_TCP_PRIO_NORMAL

#define UIP_TCP_PRIO_NORMAL   64

UIP_TCP_PSH

#define UIP_TCP_PSH   0x08U

UIP_TCP_REG

#define UIP_TCP_REG	(		pcbs,
			npcb
	)

Value:

do { \
 npcb->next = *pcbs; \
 *(pcbs) = npcb; \
 tcp_tmr_needed(); \
 } while(0)

UIP_TCP_RMV

#define UIP_TCP_RMV	(		pcbs,
			npcb
	)

Value:

do { \
 if(*(pcbs)==npcb) { \
 *(pcbs) = (*pcbs)->next; \
 } else { \
 for(uip_tcp_tmp_pcb=*pcbs;uip_tcp_tmp_pcb!=NULL;uip_tcp_tmp_pcb=uip_tcp_tmp_pcb->next) { \
 if(uip_tcp_tmp_pcb->next!=NULL && uip_tcp_tmp_pcb->next==npcb) { \
 uip_tcp_tmp_pcb->next = npcb->next; \
 break; \
 } \
 } \
 } \
 } while(0)

UIP_TCP_RST

#define UIP_TCP_RST   0x04U

UIP_TCP_SEQ_BETWEEN

#define UIP_TCP_SEQ_BETWEEN	(		a,
			b,
			c
	)		(UIP_TCP_SEQ_GEQ(a,b) && UIP_TCP_SEQ_LEQ(a,c))

UIP_TCP_SEQ_GEQ

#define UIP_TCP_SEQ_GEQ	(		a,
			b
	)		((s32_t)((a)-(b)) >= 0)

UIP_TCP_SEQ_GT

#define UIP_TCP_SEQ_GT	(		a,
			b
	)		((s32_t)((a)-(b)) > 0)

UIP_TCP_SEQ_LEQ

#define UIP_TCP_SEQ_LEQ	(		a,
			b
	)		((s32_t)((a)-(b)) <= 0)

UIP_TCP_SEQ_LT

#define UIP_TCP_SEQ_LT	(		a,
			b
	)		((s32_t)((a)-(b)) < 0)

UIP_TCP_SLOW_INTERVAL

#define UIP_TCP_SLOW_INTERVAL   (2*UIP_TCP_TMR_INTERVAL)

uip_tcp_sndbuf

#define uip_tcp_sndbuf

(

pcb

)

(pcb)->snd_buf

UIP_TCP_SYN

#define UIP_TCP_SYN   0x02U

UIP_TCP_SYN_RCVD_TIMEOUT

#define UIP_TCP_SYN_RCVD_TIMEOUT   20000 /* milliseconds */

UIP_TCP_TCPLEN

#define UIP_TCP_TCPLEN

(

seg

)

((seg)->len+((UIP_TCPH_FLAGS((seg)->tcphdr)&UIP_TCP_FIN || UIP_TCPH_FLAGS((seg)->tcphdr)&UIP_TCP_SYN)?1:0))

UIP_TCP_TMR_INTERVAL

#define UIP_TCP_TMR_INTERVAL   250

UIP_TCP_URG

#define UIP_TCP_URG   0x20U

UIP_TCPH_FLAGS

#define UIP_TCPH_FLAGS

(

phdr

)

(ntohs((phdr)->_hdrlen_rsvd_flags) & UIP_TCP_FLAGS)

UIP_TCPH_FLAGS_SET

#define UIP_TCPH_FLAGS_SET	(		phdr,
			flags
	)		(phdr)->_hdrlen_rsvd_flags = htons((ntohs((phdr)->_hdrlen_rsvd_flags)&~UIP_TCP_FLAGS)|(flags))

UIP_TCPH_HDRLEN

#define UIP_TCPH_HDRLEN

(

phdr

)

(ntohs((phdr)->_hdrlen_rsvd_flags) >> 12)

UIP_TCPH_HDRLEN_SET

#define UIP_TCPH_HDRLEN_SET	(		phdr,
			len
	)		(phdr)->_hdrlen_rsvd_flags = htons(((len)<<12)|UIP_TCPH_FLAGS(phdr))

UIP_TCPH_OFFSET

#define UIP_TCPH_OFFSET

(

phdr

)

(ntohs((phdr)->_hdrlen_rsvd_flags) >> 8)

UIP_TCPH_OFFSET_SET

#define UIP_TCPH_OFFSET_SET	(		phdr,
			offset
	)		(phdr)->_hdrlen_rsvd_flags = htons(((offset) << 8)|UIP_TCPH_FLAGS(phdr))

UIP_TCPH_SET_FLAG

#define UIP_TCPH_SET_FLAG	(		phdr,
			flags
	)		(phdr)->_hdrlen_rsvd_flags = htons(ntohs((phdr)->_hdrlen_rsvd_flags)|(flags))

UIP_TCPH_UNSET_FLAG

#define UIP_TCPH_UNSET_FLAG	(		phdr,
			flags
	)		(phdr)->_hdrlen_rsvd_flags = htons(ntohs((phdr)->_hdrlen_rsvd_flags)|(UIP_TCPH_FLAGS(phdr)&~(flags)) )

UIP_TF_ACK_DELAY

#define UIP_TF_ACK_DELAY   (u8_t)0x01U /* Delayed ACK. */

UIP_TF_ACK_NOW

#define UIP_TF_ACK_NOW   (u8_t)0x02U /* Immediate ACK. */

UIP_TF_CLOSED

#define UIP_TF_CLOSED   (u8_t)0x10U /* Connection was sucessfully closed. */

UIP_TF_GOT_FIN

#define UIP_TF_GOT_FIN   (u8_t)0x20U /* Connection was closed by the remote end. */

UIP_TF_INFR

#define UIP_TF_INFR   (u8_t)0x04U /* In fast recovery. */

UIP_TF_NODELAY

#define UIP_TF_NODELAY   (u8_t)0x40U /* Disable Nagle algorithm */

UIP_TF_RESET

#define UIP_TF_RESET   (u8_t)0x08U /* Connection was reset. */

Enumeration Type Documentation

uip_tcp_state

enum uip_tcp_state

Enumerator
UIP_CLOSED
UIP_LISTEN
UIP_SYN_SENT
UIP_SYN_RCVD
UIP_ESTABLISHED
UIP_FIN_WAIT_1
UIP_FIN_WAIT_2
UIP_CLOSE_WAIT
UIP_CLOSING
UIP_LAST_ACK
UIP_TIME_WAIT

Function Documentation

uip_tcp_abort()

void uip_tcp_abort

(

struct uip_tcp_pcb *

pcb

)

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uip_tcp_accept()

void uip_tcp_accept	(	struct uip_tcp_pcb *	pcb,
		s8_t(*)(void *, struct uip_tcp_pcb *, s8_t)	accept
	)

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uip_tcp_arg()

void uip_tcp_arg	(	struct uip_tcp_pcb *	pcb,
		void *	arg
	)

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uip_tcp_bind()

s8_t uip_tcp_bind	(	struct uip_tcp_pcb *	pcb,
		struct uip_ip_addr *	ipaddr,
		u16_t	port
	)

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uip_tcp_close()

s8_t uip_tcp_close

(

struct uip_tcp_pcb *

pcb

)

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uip_tcp_err()

void uip_tcp_err	(	struct uip_tcp_pcb *	pcb,
		void(*)(void *, s8_t)	errf
	)

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uip_tcp_fasttmr()

void uip_tcp_fasttmr

(

)

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uip_tcp_init()

void uip_tcp_init

(

)

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uip_tcp_keepalive()

void uip_tcp_keepalive

(

struct uip_tcp_pcb *

pcb

)

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uip_tcp_listen()

struct uip_tcp_pcb* uip_tcp_listen

(

struct uip_tcp_pcb *

pcb

)

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uip_tcp_new()

struct uip_tcp_pcb* uip_tcp_new

(

)

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uip_tcp_pcballoc()

struct uip_tcp_pcb* uip_tcp_pcballoc

(

u8_t

prio

)

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uip_tcp_pcbpurge()

void uip_tcp_pcbpurge

(

struct uip_tcp_pcb *

pcb

)

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uip_tcp_pcbremove()

void uip_tcp_pcbremove	(	struct uip_tcp_pcb **	pcblist,
		struct uip_tcp_pcb *	pcb
	)

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uip_tcp_poll()

void uip_tcp_poll	(	struct uip_tcp_pcb *	pcb,
		s8_t(*)(void *, struct uip_tcp_pcb *)	poll,
		u8_t	interval
	)

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uip_tcp_recv()

void uip_tcp_recv	(	struct uip_tcp_pcb *	pcb,
		s8_t(*)(void *, struct uip_tcp_pcb *, struct uip_pbuf *, s8_t)	recv
	)

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uip_tcp_recved()

void uip_tcp_recved	(	struct uip_tcp_pcb *	pcb,
		u16_t	len
	)

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uip_tcp_rexmit()

void uip_tcp_rexmit

(

struct uip_tcp_pcb *

pcb

)

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uip_tcp_rexmit_rto()

void uip_tcp_rexmit_rto

(

struct uip_tcp_pcb *

pcb

)

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uip_tcp_rst()

void uip_tcp_rst	(	u32_t	seqno,
		u32_t	ackno,
		struct uip_ip_addr *	lipaddr,
		struct uip_ip_addr *	ripaddr,
		u16_t	lport,
		u16_t	rport
	)

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uip_tcp_sendctrl()

s8_t uip_tcp_sendctrl	(	struct uip_tcp_pcb *	pcb,
		u8_t	flags
	)

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uip_tcp_sent()

void uip_tcp_sent	(	struct uip_tcp_pcb *	pcb,
		s8_t(*)(void *, struct uip_tcp_pcb *, u16_t)	sent
	)

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uip_tcp_slowtmr()

void uip_tcp_slowtmr

(

)

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uip_tcp_tmr()

void uip_tcp_tmr

(

)

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uip_tcp_write()

s8_t uip_tcp_write	(	struct uip_tcp_pcb *	pcb,
		const void *	arg,
		u16_t	len,
		u8_t	copy
	)

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uip_tcpenqueue()

s8_t uip_tcpenqueue	(	struct uip_tcp_pcb *	pcb,
		void *	arg,
		u16_t	len,
		u8_t	flags,
		u8_t	copy,
		u8_t *	optdata,
		u8_t	optlen
	)

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uip_tcpinput()

void uip_tcpinput	(	struct uip_pbuf *	p,
		struct uip_netif *	inp
	)

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uip_tcpiss_next()

u32_t uip_tcpiss_next

(

)

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uip_tcpoutput()

s8_t uip_tcpoutput

(

struct uip_tcp_pcb *

pcb

)

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uip_tcpseg_copy()

struct uip_tcpseg* uip_tcpseg_copy

(

struct uip_tcpseg *

seg

)

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uip_tcpseg_free()

u8_t uip_tcpseg_free

(

struct uip_tcpseg *

seg

)

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uip_tcpsegs_free()

u8_t uip_tcpsegs_free

(

struct uip_tcpseg *

seg

)

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Variable Documentation

PACK_STRUCT_STRUCT

PACK_STRUCT_BEGIN struct uip_tcp_hdr PACK_STRUCT_STRUCT

uip_tcp_active_pcbs

struct uip_tcp_pcb* uip_tcp_active_pcbs

uip_tcp_listen_pcbs

union uip_tcp_listen_pcbs_t uip_tcp_listen_pcbs

uip_tcp_tmp_pcb

struct uip_tcp_pcb* uip_tcp_tmp_pcb

uip_tcp_tw_pcbs

struct uip_tcp_pcb* uip_tcp_tw_pcbs