PERFORCE change 157797 for review
Andre Oppermann
andre at FreeBSD.org
Mon Feb 16 08:13:03 PST 2009
http://perforce.freebsd.org/chv.cgi?CH=157797
Change 157797 by andre at andre_flirtbox on 2009/02/16 16:12:36
Refine the segment size calculation in the TSO case.
Affected files ...
.. //depot/projects/tcp_new/netinet/tcp_output.c#3 edit
Differences ...
==== //depot/projects/tcp_new/netinet/tcp_output.c#3 (text+ko) ====
@@ -722,9 +722,11 @@
if (len + optlen + ipoptlen > tp->t_maxopd) {
flags &= ~TH_FIN;
if (tso) {
- if (len > TCP_MAXWIN - hdrlen - optlen) {
- len = TCP_MAXWIN - hdrlen - optlen;
- len = len - (len % (tp->t_maxopd - optlen));
+ int hdrs = max_linkhdr + hdrlen + optlen + ipoptlen;
+
+ if (len > TCP_MAXWIN - hdrs) {
+ len = TCP_MAXWIN - hdrs;
+ len -= len % (tp->t_maxopd - optlen);
sendalot = 1;
} else if (tp->t_flags & TF_NEEDFIN)
sendalot = 1;
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