PERFORCE change 195374 for review
Catalin Nicutar
cnicutar at FreeBSD.org
Sun Jun 26 15:59:48 UTC 2011
http://p4web.freebsd.org/@@195374?ac=10
Change 195374 by cnicutar at cnicutar_cronos on 2011/06/26 15:59:08
Limit the value of the received user timeout according to min_timeout
and max_timeout.
Affected files ...
.. //depot/projects/soc2011/cnicutar_tcputo_8/src/sys/netinet/tcp_input.c#3 edit
Differences ...
==== //depot/projects/soc2011/cnicutar_tcputo_8/src/sys/netinet/tcp_input.c#3 (text+ko) ====
@@ -1091,9 +1091,13 @@
tcp_dooptions(&to, optp, optlen, TO_SYN);
if (to.to_flags & TOF_UTO) {
- if (tp->t_flags & TF_RCV_UTO)
+ if (tp->t_flags & TF_RCV_UTO) {
tp->rcv_uto = (to.to_uto & 0x8000) ?
(to.to_uto & 0x7FFF) * 60 : to.to_uto;
+ /* silently make it fit between min-max */
+ tp->rcv_uto = min(V_uto_max_timeout,
+ max(V_uto_min_timeout, tp->rcv_uto));
+ }
/*
* XXX-CN Using option both for send and receive.
@@ -1285,9 +1289,13 @@
(thflags & TH_SYN) ? TO_SYN : 0);
/* Processing received UTO. */
- if ((to.to_flags & TOF_UTO) && (tp->t_flags & TF_RCV_UTO))
+ if ((to.to_flags & TOF_UTO) && (tp->t_flags & TF_RCV_UTO)) {
+ /* convert to seconds if granularity is set */
tp->rcv_uto = (to.to_uto & 0x8000) ?
(to.to_uto & 0x7FFF) * 60 : to.to_uto;
+ tp->rcv_uto = min(V_uto_max_timeout,
+ max(V_uto_min_timeout, tp->rcv_uto));
+ }
/*
* If echoed timestamp is later than the current time,
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