// lwip_tcp_opts.h — hardcoded TCP configuration (no #ifdefs)
#ifndef LWIP_TCP_OPTS_H
#define LWIP_TCP_OPTS_H

#define TCP_MSS               1460
#define TCP_SND_BUF           (16 * TCP_MSS)
#define TCP_WND               (8 * TCP_MSS)
#define TCP_SND_QUEUELEN      (4 * TCP_SND_BUF / TCP_MSS)
#define TCP_SNDLOWAT          (2 * TCP_MSS < TCP_SND_BUF / 2 ? 2 * TCP_MSS : TCP_SND_BUF / 2)

#define TCP_MAXRTX             12
#define TCP_SYNMAXRTX          6
#define TCP_TMR_INTERVAL       250       // ms for tcp_tmr
#define TCP_FAST_INTERVAL      TCP_TMR_INTERVAL
#define TCP_SLOW_INTERVAL      (2 * TCP_TMR_INTERVAL)

#define TCP_FIN_WAIT_TIMEOUT   20000     // ms
#define TCP_SYN_RCVD_TIMEOUT   20000     // ms
#define TCP_MSL                60000     // ms
#define TCP_OOSEQ_TIMEOUT      6         // x RTO

#define TCP_KEEPIDLE_DEFAULT   7200000   // ms (unused, no keepalive)
#define TCP_KEEPINTVL_DEFAULT  75000
#define TCP_KEEPCNT_DEFAULT    9

#define TCP_WND_SCALE          0         // disabled
#define TCP_TIMESTAMPS         0         // disabled
#define TCP_SACK_OUT           0         // disabled
#define TCP_QUEUE_OOSEQ        1
#define TCP_OVERSIZE           0
#define TCP_LISTEN_BACKLOG     0
#define TCP_KEEPALIVE          0
#define TCP_CHECKSUM_ON_COPY   0
#define TCP_CALCULATE_EFF_SEND_MSS 0

#define TCP_LOCAL_PORT_RANGE_START 0xc000
#define TCP_LOCAL_PORT_RANGE_END   0xffff

#if TCP_MSS > 536
#define INITIAL_MSS 536
#else
#define INITIAL_MSS TCP_MSS
#endif

#define TCP_PRIO_MIN    1
#define TCP_PRIO_NORMAL 64
#define TCP_PRIO_MAX    127

#endif