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Create a new branch of the kernel MIB, kern.ipc, to store

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all of the configurables and instrumentation related to
inter-process communication mechanisms.  Some variables,
like mbuf statistics, are instrumented here for the first
time.

For mbuf statistics: also keep track of m_copym() and
m_pullup() failures, and provide for the user's inspection
the compiled-in values of MSIZE, MHLEN, MCLBYTES, and MINCLSIZE.
This commit is contained in:
Garrett Wollman 1997-02-24 20:30:58 +00:00
parent 5d8d8dd3b6
commit 639acc13e2
6 changed files with 82 additions and 26 deletions
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22
sys/kern/uipc_mbuf.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)uipc_mbuf.c 8.2 (Berkeley) 1/4/94
* $Id$
* $Id: uipc_mbuf.c,v 1.28 1997/02/18 20:43:05 wollman Exp $
*/
#include <sys/param.h>
@ -41,6 +41,7 @@
#define MBTYPES
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/syslog.h>
#include <sys/domain.h>
#include <sys/protosw.h>
@ -63,6 +64,15 @@ int max_protohdr;
int max_hdr;
int max_datalen;
SYSCTL_INT(_kern_ipc, KIPC_MAX_LINKHDR, max_linkhdr, CTLFLAG_RW,
&max_linkhdr, 0, "");
SYSCTL_INT(_kern_ipc, KIPC_MAX_PROTOHDR, max_protohdr, CTLFLAG_RW,
&max_protohdr, 0, "");
SYSCTL_INT(_kern_ipc, KIPC_MAX_HDR, max_hdr, CTLFLAG_RW, &max_hdr, 0, "");
SYSCTL_INT(_kern_ipc, KIPC_MAX_DATALEN, max_datalen, CTLFLAG_RW,
&max_datalen, 0, "");
SYSCTL_STRUCT(_kern_ipc, KIPC_MBSTAT, mbstat, CTLFLAG_RW, &mbstat, mbstat, "");
static void m_reclaim __P((void));
/* "number of clusters of pages" */
@ -78,6 +88,12 @@ mbinit(dummy)
int s;
mmbfree = NULL; mclfree = NULL;
mbstat.m_msize = MSIZE;
mbstat.m_mclbytes = MCLBYTES;
mbstat.m_minclsize = MINCLSIZE;
mbstat.m_mlen = MLEN;
mbstat.m_mhlen = MHLEN;
s = splimp();
if (m_mballoc(NMB_INIT, M_DONTWAIT) == 0)
goto bad;
@ -385,7 +401,7 @@ m_prepend(m, len, how)
* continuing for "len" bytes. If len is M_COPYALL, copy to end of mbuf.
* The wait parameter is a choice of M_WAIT/M_DONTWAIT from caller.
*/
static int MCFail;
#define MCFail (mbstat.m_mcfail)
struct mbuf *
m_copym(m, off0, len, wait)
@ -656,7 +672,7 @@ m_adj(mp, req_len)
* If there is room, it will add up to max_protohdr-len extra bytes to the
* contiguous region in an attempt to avoid being called next time.
*/
static int MPFail;
#define MPFail (mbstat.m_mpfail)
struct mbuf *
m_pullup(n, len)

12
sys/kern/uipc_proto.c
View File

@ -31,14 +31,16 @@
* SUCH DAMAGE.
*
* @(#)uipc_proto.c 8.1 (Berkeley) 6/10/93
* $Id$
* $Id: uipc_proto.c,v 1.9 1997/02/22 09:39:27 peter Exp $
*/
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/protosw.h>
#include <sys/kernel.h>
#include <sys/domain.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/un.h>
#include <net/raw_cb.h>
@ -68,3 +70,7 @@ static struct protosw localsw[] = {
struct domain localdomain =
{ AF_LOCAL, "local", 0, unp_externalize, unp_dispose,
localsw, &localsw[sizeof(localsw)/sizeof(localsw[0])] };
SYSCTL_NODE(_net, PF_LOCAL, local, CTLFLAG_RW, 0, "Local domain");
SYSCTL_NODE(_net_local, SOCK_STREAM, stream, CTLFLAG_RW, 0, "SOCK_STREAM");
SYSCTL_NODE(_net_local, SOCK_DGRAM, dgram, CTLFLAG_RW, 0, "SOCK_DGRAM");

19
sys/kern/uipc_sockbuf.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)uipc_socket2.c 8.1 (Berkeley) 6/10/93
* $Id$
* $Id: uipc_socket2.c,v 1.21 1997/02/19 19:15:43 wollman Exp $
*/
#include <sys/param.h>
@ -54,11 +54,8 @@
*/
u_long sb_max = SB_MAX; /* XXX should be static */
SYSCTL_INT(_kern, KERN_MAXSOCKBUF, maxsockbuf, CTLFLAG_RW, &sb_max, 0, "")
static u_long sb_efficiency = 8; /* parameter for sbreserve() */
SYSCTL_INT(_kern, OID_AUTO, sockbuf_waste_factor, CTLFLAG_RW, &sb_efficiency,
0, "");
/*
* Procedures to manipulate state flags of socket
@ -1005,3 +1002,17 @@ pru_sense_null(struct socket *so, struct stat *sb)
sb->st_blksize = so->so_snd.sb_hiwat;
return 0;
}
/*
* Here is the definition of some of the basic objects in the kern.ipc
* branch of the MIB.
*/
SYSCTL_NODE(_kern, KERN_IPC, ipc, CTLFLAG_RW, 0, "IPC");
/* This takes the place of kern.maxsockbuf, which moved to kern.ipc. */
static int dummy;
SYSCTL_INT(_kern, KERN_DUMMY, dummy, CTLFLAG_RW, &dummy, 0, "");
SYSCTL_INT(_kern_ipc, KIPC_MAXSOCKBUF, maxsockbuf, CTLFLAG_RW, &sb_max, 0, "")
SYSCTL_INT(_kern_ipc, KIPC_SOCKBUF_WASTE, sockbuf_waste_factor, CTLFLAG_RW,
&sb_efficiency, 0, "");

5
sys/kern/uipc_socket.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)uipc_socket.c 8.3 (Berkeley) 4/15/94
* $Id$
* $Id: uipc_socket.c,v 1.23 1997/02/22 09:39:28 peter Exp $
*/
#include <sys/param.h>
@ -51,7 +51,8 @@
#include <sys/sysctl.h>
static int somaxconn = SOMAXCONN;
SYSCTL_INT(_kern, KERN_SOMAXCONN, somaxconn, CTLFLAG_RW, &somaxconn, 0, "");
SYSCTL_INT(_kern_ipc, KIPC_SOMAXCONN, somaxconn, CTLFLAG_RW, &somaxconn,
0, "");
/*
* Socket operation routines.

19
sys/kern/uipc_socket2.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)uipc_socket2.c 8.1 (Berkeley) 6/10/93
* $Id$
* $Id: uipc_socket2.c,v 1.21 1997/02/19 19:15:43 wollman Exp $
*/
#include <sys/param.h>
@ -54,11 +54,8 @@
*/
u_long sb_max = SB_MAX; /* XXX should be static */
SYSCTL_INT(_kern, KERN_MAXSOCKBUF, maxsockbuf, CTLFLAG_RW, &sb_max, 0, "")
static u_long sb_efficiency = 8; /* parameter for sbreserve() */
SYSCTL_INT(_kern, OID_AUTO, sockbuf_waste_factor, CTLFLAG_RW, &sb_efficiency,
0, "");
/*
* Procedures to manipulate state flags of socket
@ -1005,3 +1002,17 @@ pru_sense_null(struct socket *so, struct stat *sb)
sb->st_blksize = so->so_snd.sb_hiwat;
return 0;
}
/*
* Here is the definition of some of the basic objects in the kern.ipc
* branch of the MIB.
*/
SYSCTL_NODE(_kern, KERN_IPC, ipc, CTLFLAG_RW, 0, "IPC");
/* This takes the place of kern.maxsockbuf, which moved to kern.ipc. */
static int dummy;
SYSCTL_INT(_kern, KERN_DUMMY, dummy, CTLFLAG_RW, &dummy, 0, "");
SYSCTL_INT(_kern_ipc, KIPC_MAXSOCKBUF, maxsockbuf, CTLFLAG_RW, &sb_max, 0, "")
SYSCTL_INT(_kern_ipc, KIPC_SOCKBUF_WASTE, sockbuf_waste_factor, CTLFLAG_RW,
&sb_efficiency, 0, "");

31
sys/kern/uipc_usrreq.c
View File

@ -31,26 +31,27 @@
* SUCH DAMAGE.
*
* From: @(#)uipc_usrreq.c 8.3 (Berkeley) 1/4/94
* $Id$
* $Id: uipc_usrreq.c,v 1.19 1997/02/22 09:39:29 peter Exp $
*/
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/filedesc.h>
#include <sys/kernel.h>
#include <sys/domain.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/mbuf.h>
#include <sys/namei.h>
#include <sys/proc.h>
#include <sys/protosw.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/unpcb.h>
#include <sys/un.h>
#include <sys/namei.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/mbuf.h>
#include <sys/sysctl.h>
#include <sys/un.h>
#include <sys/unpcb.h>
#include <sys/vnode.h>
/*
* Unix communications domain.
@ -358,6 +359,16 @@ static u_long unpdg_recvspace = 4*1024;
static int unp_rights; /* file descriptors in flight */
SYSCTL_INT(_net_local_stream, OID_AUTO, sendspace, CTLFLAG_RW,
&unpst_sendspace, 0, "");
SYSCTL_INT(_net_local_stream, OID_AUTO, recvspace, CTLFLAG_RW,
&unpst_recvspace, 0, "");
SYSCTL_INT(_net_local_dgram, OID_AUTO, maxdgram, CTLFLAG_RW,
&unpdg_sendspace, 0, "");
SYSCTL_INT(_net_local_dgram, OID_AUTO, recvspace, CTLFLAG_RW,
&unpdg_recvspace, 0, "");
SYSCTL_INT(_net_local, OID_AUTO, inflight, CTLFLAG_RD, &unp_rights, 0, "");
static int
unp_attach(so)
struct socket *so;