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changed hardcoded to systemside clock or ticks. JIFFY_FREQ.

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Noticed slightly better responsive times while reducing timeouts.
This commit is contained in:
Z8Griz 2024-08-27 19:04:03 -06:00
parent e363a0b0b6
commit 295a97bf4c
1 changed files with 18 additions and 8 deletions
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26
src/Home/Net/Protocols/TCP/TCP.HH
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@ -2,20 +2,28 @@
#define TCP_SRTT_ALPHA 0.9
// Transmission Time Out to prevent network slugglish performance
#define TCP_RTO_BETA 2
#define TCP_RTO_MIN 0.2
#define TCP_RTO_MAX 10
#define TCP_RTO_MIN JIFFY_FREQ/5 // (linux TCP.H) should be using system timer/clock instead hardcoded
#define TCP_RTO_MAX 120*JIFFY_FREQ // JIFFY_FREZ = Hz. Hz is software clock ticks
// #define TCP_WINDOW_SIZE 8192 // Should not be static. For now it's okay
U16 WINDOW_SIZE; // Init window size in CTPCPacketAllocate{} ?? Need more study
U16 RECEIVE_WINDOW; // gets host window size. It is not static.
U16 SEND_WINDOW; // gets receive window size from host, then adjust accordingly.
#define TCP_MAX_WINDOW 32676 // Beyond this number, use window_scale(not implemented). 8192 is recommended/default.
U16 WINDOW_SIZE; // Initiate window size in CTPCPacketAllocate{} ?? Need more study
U16 RECEIVE_WINDOW; // gets host window size. It is not static.
U16 SEND_WINDOW; // gets receive window size from host, then adjust accordingly.
U32 RECEIVE_BUFFER; // is 32 too much? receive_buffer holds TCP data that has not yet been processed
U32 RECEIVE_BUFFER; // is 32 too much? receive_buffer holds TCP data that has not yet been processed
#define TCP_MSS 536 // Max Segment Size default
#define TCP_MIN_MSS 88 // Min Segment Size
#define TCP_TIMEOUT 5000
#define TCP_INIT_TIMEOUT 1*JIFFY_FREQ // TODO... Init RTO Value. Not sure if this is needed.
#define TCP_TIMEOUT 20*JIFFY_FREQ // Roughly a minute based on software clock
#define TCP_KEEPALIVE 120*JIFFY_FREQ // TODO... 1 hour
#define TCP_MAX_INCREASEACK 16 //TODO... At Initial start up, it's generally slow. This accelerates the process.
#define TCP_MAX_DELAYACK JIFFY_FREQ/5 //TODO... Delay max time ack
#define TCP_MIN_DELAYACK JIFFY_FREQ/25 //TODO... Delay min time ack
#define TCP_STATE_CLOSED 0
#define TCP_STATE_LISTEN 1
@ -44,6 +52,8 @@ U32 RECEIVE_BUFFER; // is 32 too much? receive_buffer holds TCP data that has no
#define TCPF_ACK (1 << TCPf_ACK)
//#define TCPF_URG (1 << TCPf_URG) // most stacks don't implement URGENT.
// U32 TCP_MAX_DELAYACK(CSocket *Socket); // TODO
class CTCPAckQueue:CQueue
{