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Config.uk, lwipopts.h: Expose TCP_MSL as configurable option #74

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Config.uk, lwipopts.h: Expose TCP_MSL as configurable option #74

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11 changes: 11 additions & 0 deletions Config.uk
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Original file line number Diff line number Diff line change
Expand Up @@ -267,6 +267,17 @@ config LWIP_NUM_TCPCON
config LWIP_NUM_TCPLISTENERS
int "Maximum number of simultaneous TCP listeners"
default 64

config LWIP_TCP_MSL
int "Maximum segment lifetime (ms)"
default 60000
help
The maximum segment lifetime in milliseconds, used to determine
the TIME_WAIT timeout (2 * TCP_MSL). Connections remain in
TIME_WAIT state for this duration after closing, consuming
resources. Lower values allow faster connection recycling at the
cost of potential duplicate packet issues. Default is 60000 (60s),
resulting in a 120s TIME_WAIT.
endif

config LWIP_ICMP
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1 change: 1 addition & 0 deletions include/lwipopts.h
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Expand Up @@ -162,6 +162,7 @@ void sys_free(void *ptr);

#if LWIP_TCP
#define TCP_MSS CONFIG_LWIP_TCP_MSS
#define TCP_MSL ((u32_t)CONFIG_LWIP_TCP_MSL)
#define TCP_CALCULATE_EFF_SEND_MSS 1
#define IP_FRAG 0

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