Hi folks,
I have a question about below source code when I study the stack:
if (acked > so->so_snd.sb_cc) {
tp->snd_wnd -= so->so_snd.sb_cc;
====================>
sbdrop_locked(&so->so_snd, (int)so->so_snd.sb_cc);
ourfinisacked = 1;
} else {
sbdrop_locked(&so->so_snd, acked);
tp->snd_wnd -= acked;
=====================>
ourfinisacked = 0;
}
We reduce the snd_wnd by acked number, I investigate the RFC793 and didn't
find tcp will need to do this.
Could you please shed a light on this? Is there any reason freebsd stack
considering doing this? Thanks a lot!
Best Regards,
Ren Maosheng
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