sys/net/gnrc/transport_layer/tcp/internal/common.h

Internally used defines, macros and variable declarations.

STATUS_PASSIVE

TCB status flags. 

1
(1 << 0)
STATUS_ALLOW_ANY_ADDR
1
(1 << 1)
STATUS_NOTIFY_USER
1
(1 << 2)
STATUS_WAIT_FOR_MSG
1
(1 << 3)
TCP_EVENTLOOP_MSG_QUEUE_SIZE

Defines for “eventloop” thread settings. 

1
(8U)
TCP_EVENTLOOP_PRIO
1
(THREAD_PRIORITY_MAIN - 2U)
TCP_EVENTLOOP_STACK_SIZE
1
(THREAD_STACKSIZE_DEFAULT)
MSK_FIN

Bitmasks for control bit field handling. 

1
(0x0001)
MSK_SYN
1
(0x0002)
MSK_RST
1
(0x0004)
MSK_PSH
1
(0x0008)
MSK_ACK
1
(0x0010)
MSK_URG
1
(0x0020)
MSK_FIN_ACK
1
(0x0011)
MSK_SYN_ACK
1
(0x0012)
MSK_RST_ACK
1
(0x0014)
MSK_SYN_FIN_ACK
1
(0x0013)
MSK_FIN_ACK_PSH
1
(0x0019)
MSK_CTL
1
(0x003F)
MSK_OFFSET
1
(0xF000)
MSG_TYPE_CONNECTION_TIMEOUT

Message types for GNRC TCPs internal message passing. 

1
(GNRC_NETAPI_MSG_TYPE_ACK + 101)
MSG_TYPE_PROBE_TIMEOUT
1
(GNRC_NETAPI_MSG_TYPE_ACK + 102)
MSG_TYPE_USER_SPEC_TIMEOUT
1
(GNRC_NETAPI_MSG_TYPE_ACK + 103)
MSG_TYPE_RETRANSMISSION
1
(GNRC_NETAPI_MSG_TYPE_ACK + 104)
MSG_TYPE_TIMEWAIT
1
(GNRC_NETAPI_MSG_TYPE_ACK + 105)
MSG_TYPE_NOTIFY_USER
1
(GNRC_NETAPI_MSG_TYPE_ACK + 106)
LSS_32_BIT( x, y)

Overflow tolerant comparision operators for sequence and acknowledgement number comparison. 

1
(((int32_t) (x)) - ((int32_t) (y)) <  0)
LEQ_32_BIT( x, y)
1
(((int32_t) (x)) - ((int32_t) (y)) <= 0)
GRT_32_BIT( x, y)
1
(!LEQ_32_BIT(x, y))
GEQ_32_BIT( x, y)
1
(!LSS_32_BOT(x, y))
PORT_UNSPEC

Port number unspecified. 

1
(0)

See also

https://www.ietf.org/rfc/rfc1700.txt

RTO_UNINITIALIZED

Define for marking that time measurement is uninitialized. 

1
(-1)
INSIDE_WND( l_ed, seq_num, r_ed)

Check if a given sequence number falls into receive window. 

1
(LEQ_32_BIT(l_ed, seq_num) && LSS_32_BIT(seq_num, r_ed))
GET_OFFSET( x)

Extract offset value from “offctl” field in TCP header. 

1
(((x) & MSK_OFFSET) >> 12)
kernel_types.h::kernel_pid_t gnrc_tcp_pid

PID of GNRC TCP event handling thread.

tcb.h::gnrc_tcp_tcb_t * _list_tcb_head

Head of linked TCB list.

mutex_t _list_tcb_lock

Mutex to protect TCB list.