diff options
Diffstat (limited to 'net/sctp/objcnt.c')
| -rw-r--r-- | net/sctp/objcnt.c | 142 |
1 files changed, 70 insertions, 72 deletions
diff --git a/net/sctp/objcnt.c b/net/sctp/objcnt.c index 8ff588f0d76..40e7fac96c4 100644 --- a/net/sctp/objcnt.c +++ b/net/sctp/objcnt.c @@ -1,43 +1,38 @@ -/* SCTP kernel reference Implementation +/* SCTP kernel implementation * (C) Copyright IBM Corp. 2001, 2004 - * - * This file is part of the SCTP kernel reference Implementation - * + * + * This file is part of the SCTP kernel 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 + * object allocations/deallocations for types instrumented for this + * via the proc fs. + * + * This SCTP 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 + * + * This SCTP 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. - * + * along with GNU CC; see the file COPYING. If not, see + * <http://www.gnu.org/licenses/>. + * * 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 + * lksctp developers <linux-sctp@vger.kernel.org> * - * Written or modified by: + * 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. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/kernel.h> #include <net/sctp/sctp.h> @@ -58,6 +53,7 @@ SCTP_DBG_OBJCNT(chunk); SCTP_DBG_OBJCNT(addr); SCTP_DBG_OBJCNT(ssnmap); SCTP_DBG_OBJCNT(datamsg); +SCTP_DBG_OBJCNT(keys); /* An array to make it easy to pretty print the debug information * to the proc fs. @@ -73,72 +69,74 @@ static sctp_dbg_objcnt_entry_t sctp_dbg_objcnt[] = { SCTP_DBG_OBJCNT_ENTRY(addr), SCTP_DBG_OBJCNT_ENTRY(ssnmap), SCTP_DBG_OBJCNT_ENTRY(datamsg), + SCTP_DBG_OBJCNT_ENTRY(keys), }; /* 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) +static int sctp_objcnt_seq_show(struct seq_file *seq, void *v) { - 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; + + i = (int)*(loff_t *)v; + seq_setwidth(seq, 127); + seq_printf(seq, "%s: %d", sctp_dbg_objcnt[i].label, + atomic_read(sctp_dbg_objcnt[i].counter)); + seq_pad(seq, '\n'); + return 0; +} + +static void *sctp_objcnt_seq_start(struct seq_file *seq, loff_t *pos) +{ + return (*pos >= ARRAY_SIZE(sctp_dbg_objcnt)) ? NULL : (void *)pos; +} + +static void sctp_objcnt_seq_stop(struct seq_file *seq, void *v) +{ } +static void *sctp_objcnt_seq_next(struct seq_file *seq, void *v, loff_t *pos) +{ + ++*pos; + return (*pos >= ARRAY_SIZE(sctp_dbg_objcnt)) ? NULL : (void *)pos; +} + +static const struct seq_operations sctp_objcnt_seq_ops = { + .start = sctp_objcnt_seq_start, + .next = sctp_objcnt_seq_next, + .stop = sctp_objcnt_seq_stop, + .show = sctp_objcnt_seq_show, +}; + +static int sctp_objcnt_seq_open(struct inode *inode, struct file *file) +{ + return seq_open(file, &sctp_objcnt_seq_ops); +} + +static const struct file_operations sctp_objcnt_ops = { + .open = sctp_objcnt_seq_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; + /* Initialize the objcount in the proc filesystem. */ -void sctp_dbg_objcnt_init(void) +void sctp_dbg_objcnt_init(struct net *net) { struct proc_dir_entry *ent; - ent = create_proc_read_entry("sctp_dbg_objcnt", 0, proc_net_sctp, - sctp_dbg_objcnt_read, NULL); + + ent = proc_create("sctp_dbg_objcnt", 0, + net->sctp.proc_net_sctp, &sctp_objcnt_ops); if (!ent) - printk(KERN_WARNING - "sctp_dbg_objcnt: Unable to create /proc entry.\n"); + pr_warn("sctp_dbg_objcnt: Unable to create /proc entry.\n"); } /* Cleanup the objcount entry in the proc filesystem. */ -void sctp_dbg_objcnt_exit(void) +void sctp_dbg_objcnt_exit(struct net *net) { - remove_proc_entry("sctp_dbg_objcnt", proc_net_sctp); + remove_proc_entry("sctp_dbg_objcnt", net->sctp.proc_net_sctp); } |