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nfqws: prepare for +- autottl

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bol-van
2025-04-29 17:45:34 +03:00
parent 68a538daed
commit d21175b4a3
4 changed files with 26 additions and 11 deletions
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11
nfq/darkmagic.c
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@@ -1837,6 +1837,7 @@ bool rawsend_queue(struct rawpacket_tailhead *q)
uint8_t autottl_guess(uint8_t ttl, const autottl *attl)
{
uint8_t orig, path, fake;
int d;
// 18.65.168.125 ( cloudfront ) 255
// 157.254.246.178 128
@@ -1853,11 +1854,13 @@ uint8_t autottl_guess(uint8_t ttl, const autottl *attl)
path = orig - ttl;
fake = path > attl->delta ? path - attl->delta : attl->min;
if (fake<attl->min) fake=attl->min;
else if (fake>attl->max) fake=attl->max;
d = (int)path + attl->delta;
if (d<attl->min) fake=attl->min;
else if (d>attl->max) fake=attl->max;
else fake=(uint8_t)d;
if (fake>=path) return 0;
if (attl->delta<0 && fake>=path || attl->delta>=0 && fake<path)
return 0;
return fake;
}