forked from luck/tmp_suning_uos_patched
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
141 lines
3.9 KiB
C
141 lines
3.9 KiB
C
/* SCTP kernel reference Implementation
|
|
* (C) Copyright IBM Corp. 2001, 2004
|
|
*
|
|
* This file is part of the SCTP kernel reference Implementation
|
|
*
|
|
* Support for memory object debugging. This allows one to monitor the
|
|
* object allocations/deallocations for types instrumented for this
|
|
* via the proc fs.
|
|
*
|
|
* The SCTP reference implementation is free software;
|
|
* you can redistribute it and/or modify it under the terms of
|
|
* the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* The SCTP reference implementation is distributed in the hope that it
|
|
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
|
|
* ************************
|
|
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
* See the GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with GNU CC; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*
|
|
* Please send any bug reports or fixes you make to the
|
|
* email address(es):
|
|
* lksctp developers <lksctp-developers@lists.sourceforge.net>
|
|
*
|
|
* Or submit a bug report through the following website:
|
|
* http://www.sf.net/projects/lksctp
|
|
*
|
|
* Written or modified by:
|
|
* Jon Grimm <jgrimm@us.ibm.com>
|
|
*
|
|
* Any bugs reported given to us we will try to fix... any fixes shared will
|
|
* be incorporated into the next SCTP release.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <net/sctp/sctp.h>
|
|
|
|
/*
|
|
* Global counters to count raw object allocation counts.
|
|
* To add new counters, choose a unique suffix for the variable
|
|
* name as the helper macros key off this suffix to make
|
|
* life easier for the programmer.
|
|
*/
|
|
|
|
SCTP_DBG_OBJCNT(sock);
|
|
SCTP_DBG_OBJCNT(ep);
|
|
SCTP_DBG_OBJCNT(transport);
|
|
SCTP_DBG_OBJCNT(assoc);
|
|
SCTP_DBG_OBJCNT(bind_addr);
|
|
SCTP_DBG_OBJCNT(bind_bucket);
|
|
SCTP_DBG_OBJCNT(chunk);
|
|
SCTP_DBG_OBJCNT(addr);
|
|
SCTP_DBG_OBJCNT(ssnmap);
|
|
SCTP_DBG_OBJCNT(datamsg);
|
|
|
|
/* An array to make it easy to pretty print the debug information
|
|
* to the proc fs.
|
|
*/
|
|
static sctp_dbg_objcnt_entry_t sctp_dbg_objcnt[] = {
|
|
SCTP_DBG_OBJCNT_ENTRY(sock),
|
|
SCTP_DBG_OBJCNT_ENTRY(ep),
|
|
SCTP_DBG_OBJCNT_ENTRY(assoc),
|
|
SCTP_DBG_OBJCNT_ENTRY(transport),
|
|
SCTP_DBG_OBJCNT_ENTRY(chunk),
|
|
SCTP_DBG_OBJCNT_ENTRY(bind_addr),
|
|
SCTP_DBG_OBJCNT_ENTRY(bind_bucket),
|
|
SCTP_DBG_OBJCNT_ENTRY(addr),
|
|
SCTP_DBG_OBJCNT_ENTRY(ssnmap),
|
|
SCTP_DBG_OBJCNT_ENTRY(datamsg),
|
|
};
|
|
|
|
/* Callback from procfs to read out objcount information.
|
|
* Walk through the entries in the sctp_dbg_objcnt array, dumping
|
|
* the raw object counts for each monitored type.
|
|
*
|
|
* This code was modified from similar code in route.c
|
|
*/
|
|
static int sctp_dbg_objcnt_read(char *buffer, char **start, off_t offset,
|
|
int length, int *eof, void *data)
|
|
{
|
|
int len = 0;
|
|
off_t pos = 0;
|
|
int entries;
|
|
int i;
|
|
char temp[128];
|
|
|
|
/* How many entries? */
|
|
entries = ARRAY_SIZE(sctp_dbg_objcnt);
|
|
|
|
/* Walk the entries and print out the debug information
|
|
* for proc fs.
|
|
*/
|
|
for (i = 0; i < entries; i++) {
|
|
pos += 128;
|
|
|
|
/* Skip ahead. */
|
|
if (pos <= offset) {
|
|
len = 0;
|
|
continue;
|
|
}
|
|
/* Print out each entry. */
|
|
sprintf(temp, "%s: %d",
|
|
sctp_dbg_objcnt[i].label,
|
|
atomic_read(sctp_dbg_objcnt[i].counter));
|
|
|
|
sprintf(buffer + len, "%-127s\n", temp);
|
|
len += 128;
|
|
if (pos >= offset+length)
|
|
goto done;
|
|
}
|
|
|
|
done:
|
|
*start = buffer + len - (pos - offset);
|
|
len = pos - offset;
|
|
if (len > length)
|
|
len = length;
|
|
|
|
return len;
|
|
}
|
|
|
|
/* Initialize the objcount in the proc filesystem. */
|
|
void sctp_dbg_objcnt_init(void)
|
|
{
|
|
create_proc_read_entry("sctp_dbg_objcnt", 0, proc_net_sctp,
|
|
sctp_dbg_objcnt_read, NULL);
|
|
}
|
|
|
|
/* Cleanup the objcount entry in the proc filesystem. */
|
|
void sctp_dbg_objcnt_exit(void)
|
|
{
|
|
remove_proc_entry("sctp_dbg_objcnt", proc_net_sctp);
|
|
}
|
|
|
|
|