One question for tcp_input function

[ren maosheng]

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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One question about tcp_input function

[ren maosheng]

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
___
freebsd-net@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-net
To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"