d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

If rcmd() fails, return immediately instead of trying a bunch of

Browse Source 
setsockopt()'s on a -1 file descriptor.

Remove attempt to decrease TCP MSS; it makes no sense.

Set the IP TOS to IPTOS_THROUGHPUT as an indication that this is an
application sending large blocks of data, as recommended by RFC1700.
This commit is contained in:
Bill Fenner 1996-10-28 23:26:37 +00:00
parent d4788da623
commit d71ba03df8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=19239
1 changed files with 9 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
sbin/dump/dumprmt.c
View File

@ -49,7 +49,8 @@ static char sccsid[] = "@(#)dumprmt.c 8.1 (Berkeley) 6/5/93";
#endif
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <protocols/dumprestore.h>
@ -121,7 +122,7 @@ rmtgetconn()
#endif
char *tuser;
int size;
int maxseg;
int throughput;
if (sp == NULL) {
sp = getservbyname("shell", "tcp");
@ -148,6 +149,8 @@ rmtgetconn()
rmt = _PATH_RMT;
rmtape = rcmd(&rmtpeer, (u_short)sp->s_port, pwd->pw_name, tuser,
rmt, (int *)0);
if (rmtape < 0)
return;
size = ntrec * TP_BSIZE;
if (size > 60 * 1024) /* XXX */
size = 60 * 1024;
@ -157,10 +160,10 @@ rmtgetconn()
setsockopt(rmtape, SOL_SOCKET, SO_SNDBUF, &size, sizeof (size)) < 0)
size -= TP_BSIZE;
(void)setsockopt(rmtape, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size));
maxseg = 1024;
if (setsockopt(rmtape, IPPROTO_TCP, TCP_MAXSEG,
&maxseg, sizeof (maxseg)) < 0)
perror("TCP_MAXSEG setsockopt");
throughput = IPTOS_THROUGHPUT;
if (setsockopt(rmtape, IPPROTO_IP, IP_TOS,
&throughput, sizeof(throughput)) < 0)
perror("IP_TOS:IPTOS_THROUGHPUT setsockopt");
#ifdef notdef
if (setsockopt(rmtape, IPPROTO_TCP, TCP_NODELAY, &on, sizeof (on)) < 0)