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Message-Id: <11930334761787-git-send-email-nakam@linux-ipv6.org>
Date: Mon, 22 Oct 2007 15:11:16 +0900
From: Masahide NAKAMURA <nakam@...ux-ipv6.org>
To: Herbert Xu <herbert@...dor.apana.org.au>,
David Miller <davem@...emloft.net>
Cc: netdev@...r.kernel.org, Masahide NAKAMURA <nakam@...ux-ipv6.org>
Subject: [RFC][PATCH 1/3][XFRM]: Define packet processing statistics.
This statistics is shown as /proc/net/xfrm_stat about transformation
error (or almost error) factor at packet processing for developer.
It is not a SNMP/MIB specification but a counter designed from
current transformation source code.
- Inbound errors
XfrmInError - all errors which is not matched others
XfrmInBufferError - no buffer is left
XfrmInHdrError - header error
XfrmInNoStates - no state is found
XfrmInStateProtoError - error at transformation protocol
XfrmInStateModeError - error at transformation mode
XfrmInSeqOutOfWindow - sequence out of window
XfrmInStateExpired - state is expired
XfrmInStateMismatch - state has mismatch option
XfrmInStateInvalid - state is invalid
XfrmInTmplMismatch - no matching template for states
XfrmInNoPols - no policy is found for states
XfrmInPolBlock - policy discards
XfrmInPolError - policy error
- Outbound errors
XfrmOutError - all errors which is not matched others
XfrmOutLengthError - length error
XfrmOutBundleError - error at bundle
XfrmOutNoStates - no state is found
XfrmOutStateProtoError - error at transformation protocol
XfrmOutStateModeError - error at transformation mode
XfrmOutStateExpired - state expired
XfrmOutPolBlock - policy discards
XfrmOutPolError - policy error
Signed-off-by: Masahide NAKAMURA <nakam@...ux-ipv6.org>
---
include/linux/snmp.h | 30 +++++++++++++++
include/net/snmp.h | 5 ++
include/net/xfrm.h | 17 ++++++++
net/xfrm/Makefile | 1 +
net/xfrm/xfrm_policy.c | 35 +++++++++++++++++
net/xfrm/xfrm_proc.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 184 insertions(+), 0 deletions(-)
diff --git a/include/linux/snmp.h b/include/linux/snmp.h
index 89f0c2b..3fc89f4 100644
--- a/include/linux/snmp.h
+++ b/include/linux/snmp.h
@@ -217,4 +217,34 @@ enum
__LINUX_MIB_MAX
};
+/* xfrm mib definitions */
+enum
+{
+ XFRM_MIB_NUM = 0,
+ XFRM_MIB_INERROR, /* XfrmInError */
+ XFRM_MIB_INBUFFERERROR, /* XfrmInBufferError */
+ XFRM_MIB_INHDRERROR, /* XfrmInHdrError */
+ XFRM_MIB_INNOSTATES, /* XfrmInNoStates */
+ XFRM_MIB_INSTATEPROTOERROR, /* XfrmInStateProtoError */
+ XFRM_MIB_INSTATEMODEERROR, /* XfrmInStateModeError */
+ XFRM_MIB_INSEQOUTOFWINDOW, /* XfrmInSeqOutOfWindow */
+ XFRM_MIB_INSTATEEXPIRED, /* XfrmInStateExpired */
+ XFRM_MIB_INSTATEMISMATCH, /* XfrmInStateMismatch */
+ XFRM_MIB_INSTATEINVALID, /* XfrmInStateInvalid */
+ XFRM_MIB_INTMPLMISMATCH, /* XfrmInTmplMismatch */
+ XFRM_MIB_INNOPOLS, /* XfrmInNoPols */
+ XFRM_MIB_INPOLBLOCK, /* XfrmInPolBlock */
+ XFRM_MIB_INPOLERROR, /* XfrmInPolError */
+ XFRM_MIB_OUTERROR, /* XfrmOutError */
+ XFRM_MIB_OUTLENGTHERROR, /* XfrmOutLengthError */
+ XFRM_MIB_OUTBUNDLEERROR, /* XfrmOutBundleError */
+ XFRM_MIB_OUTNOSTATES, /* XfrmOutNoStates */
+ XFRM_MIB_OUTSTATEPROTOERROR, /* XfrmOutStateProtoError */
+ XFRM_MIB_OUTSTATEMODEERROR, /* XfrmOutStateModeError */
+ XFRM_MIB_OUTSTATEEXPIRED, /* XfrmOutStateExpired */
+ XFRM_MIB_OUTPOLBLOCK, /* XfrmOutPolBlock */
+ XFRM_MIB_OUTPOLERROR, /* XfrmOutPolError */
+ __XFRM_MIB_MAX
+};
+
#endif /* _LINUX_SNMP_H */
diff --git a/include/net/snmp.h b/include/net/snmp.h
index ea206bf..37bcf19 100644
--- a/include/net/snmp.h
+++ b/include/net/snmp.h
@@ -117,6 +117,11 @@ struct linux_mib {
unsigned long mibs[LINUX_MIB_MAX];
};
+/* Xfrm */
+#define XFRM_MIB_MAX __XFRM_MIB_MAX
+struct xfrm_mib {
+ unsigned long mibs[XFRM_MIB_MAX];
+};
/*
* FIXME: On x86 and some other CPUs the split into user and softirq parts
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 688f6f5..679d915 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -19,6 +19,9 @@
#include <net/route.h>
#include <net/ipv6.h>
#include <net/ip6_fib.h>
+#ifdef CONFIG_XFRM_STATISTICS
+#include <net/snmp.h>
+#endif
#define XFRM_PROTO_ESP 50
#define XFRM_PROTO_AH 51
@@ -34,6 +37,17 @@
#define MODULE_ALIAS_XFRM_TYPE(family, proto) \
MODULE_ALIAS("xfrm-type-" __stringify(family) "-" __stringify(proto))
+#ifdef CONFIG_XFRM_STATISTICS
+DECLARE_SNMP_STAT(struct xfrm_mib, xfrm_statistics);
+#define XFRM_INC_STATS(field) SNMP_INC_STATS(xfrm_statistics, field)
+#define XFRM_INC_STATS_BH(field) SNMP_INC_STATS_BH(xfrm_statistics, field)
+#define XFRM_INC_STATS_USER(field) SNMP_INC_STATS_USER(xfrm_statistics, field)
+#else
+#define XFRM_INC_STATS(field)
+#define XFRM_INC_STATS_BH(field)
+#define XFRM_INC_STATS_USER(field)
+#endif
+
extern struct sock *xfrm_nl;
extern u32 sysctl_xfrm_aevent_etime;
extern u32 sysctl_xfrm_aevent_rseqth;
@@ -985,6 +999,9 @@ extern void xfrm_state_init(void);
extern void xfrm4_state_init(void);
extern void xfrm6_state_init(void);
extern void xfrm6_state_fini(void);
+#ifdef CONFIG_XFRM_STATISTICS
+extern int xfrm_proc_init(void);
+#endif
extern int xfrm_state_walk(u8 proto, int (*func)(struct xfrm_state *, int, void*), void *);
extern struct xfrm_state *xfrm_state_alloc(void);
diff --git a/net/xfrm/Makefile b/net/xfrm/Makefile
index 45744a3..332cfb0 100644
--- a/net/xfrm/Makefile
+++ b/net/xfrm/Makefile
@@ -4,5 +4,6 @@
obj-$(CONFIG_XFRM) := xfrm_policy.o xfrm_state.o xfrm_hash.o \
xfrm_input.o xfrm_output.o xfrm_algo.o
+obj-$(CONFIG_XFRM_STATISTICS) += xfrm_proc.o
obj-$(CONFIG_XFRM_USER) += xfrm_user.o
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index b702bd8..e770998 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -25,11 +25,19 @@
#include <linux/cache.h>
#include <net/xfrm.h>
#include <net/ip.h>
+#ifdef CONFIG_XFRM_STATISTICS
+#include <net/snmp.h>
+#endif
#include "xfrm_hash.h"
int sysctl_xfrm_larval_drop __read_mostly;
+#ifdef CONFIG_XFRM_STATISTICS
+DEFINE_SNMP_STAT(struct xfrm_mib, xfrm_statistics) __read_mostly;
+EXPORT_SYMBOL(xfrm_statistics);
+#endif
+
DEFINE_MUTEX(xfrm_cfg_mutex);
EXPORT_SYMBOL(xfrm_cfg_mutex);
@@ -2078,6 +2086,27 @@ static struct notifier_block xfrm_dev_notifier = {
0
};
+#ifdef CONFIG_XFRM_STATISTICS
+static int __init xfrm_statistics_init(void)
+{
+ xfrm_statistics[0] = alloc_percpu(struct xfrm_mib);
+ if (!xfrm_statistics[0])
+ goto err0;
+
+ xfrm_statistics[1] = alloc_percpu(struct xfrm_mib);
+ if (!xfrm_statistics[1])
+ goto err1;
+
+ return 0;
+
+err1:
+ free_percpu(xfrm_statistics[0]);
+ xfrm_statistics[0] = NULL;
+err0:
+ return -ENOMEM;
+}
+#endif
+
static void __init xfrm_policy_init(void)
{
unsigned int hmask, sz;
@@ -2114,9 +2143,15 @@ static void __init xfrm_policy_init(void)
void __init xfrm_init(void)
{
+#ifdef CONFIG_XFRM_STATISTICS
+ xfrm_statistics_init();
+#endif
xfrm_state_init();
xfrm_policy_init();
xfrm_input_init();
+#ifdef CONFIG_XFRM_STATISTICS
+ xfrm_proc_init();
+#endif
}
#ifdef CONFIG_AUDITSYSCALL
diff --git a/net/xfrm/xfrm_proc.c b/net/xfrm/xfrm_proc.c
new file mode 100644
index 0000000..7a44a12
--- /dev/null
+++ b/net/xfrm/xfrm_proc.c
@@ -0,0 +1,96 @@
+/*
+ * xfrm_proc.c
+ *
+ * Copyright (C)2006-2007 USAGI/WIDE Project
+ *
+ * Authors: Masahide NAKAMURA <nakam@...ux-ipv6.org>
+ *
+ * This program 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 of the License, or (at your option) any later version.
+ */
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <net/net_namespace.h>
+#include <net/snmp.h>
+#include <net/xfrm.h>
+
+static struct snmp_mib xfrm_mib_list[] = {
+ SNMP_MIB_ITEM("XfrmInError", XFRM_MIB_INERROR),
+ SNMP_MIB_ITEM("XfrmInBufferError", XFRM_MIB_INBUFFERERROR),
+ SNMP_MIB_ITEM("XfrmInHdrError", XFRM_MIB_INHDRERROR),
+ SNMP_MIB_ITEM("XfrmInNoStates", XFRM_MIB_INNOSTATES),
+ SNMP_MIB_ITEM("XfrmInStateProtoError", XFRM_MIB_INSTATEPROTOERROR),
+ SNMP_MIB_ITEM("XfrmInStateModeError", XFRM_MIB_INSTATEMODEERROR),
+ SNMP_MIB_ITEM("XfrmInSeqOutOfWindow", XFRM_MIB_INSEQOUTOFWINDOW),
+ SNMP_MIB_ITEM("XfrmInStateExpired", XFRM_MIB_INSTATEEXPIRED),
+ SNMP_MIB_ITEM("XfrmInStateMismatch", XFRM_MIB_INSTATEMISMATCH),
+ SNMP_MIB_ITEM("XfrmInStateInvalid", XFRM_MIB_INSTATEINVALID),
+ SNMP_MIB_ITEM("XfrmInTmplMismatch", XFRM_MIB_INTMPLMISMATCH),
+ SNMP_MIB_ITEM("XfrmInNoPols", XFRM_MIB_INNOPOLS),
+ SNMP_MIB_ITEM("XfrmInPolBlock", XFRM_MIB_INPOLBLOCK),
+ SNMP_MIB_ITEM("XfrmInPolError", XFRM_MIB_INPOLERROR),
+ SNMP_MIB_ITEM("XfrmOutError", XFRM_MIB_OUTERROR),
+ SNMP_MIB_ITEM("XfrmOutLengthError", XFRM_MIB_OUTLENGTHERROR),
+ SNMP_MIB_ITEM("XfrmOutBundleError", XFRM_MIB_OUTBUNDLEERROR),
+ SNMP_MIB_ITEM("XfrmOutNoStates", XFRM_MIB_OUTNOSTATES),
+ SNMP_MIB_ITEM("XfrmOutStateProtoError", XFRM_MIB_OUTSTATEPROTOERROR),
+ SNMP_MIB_ITEM("XfrmOutStateModeError", XFRM_MIB_OUTSTATEMODEERROR),
+ SNMP_MIB_ITEM("XfrmOutStateExpired", XFRM_MIB_OUTSTATEEXPIRED),
+ SNMP_MIB_ITEM("XfrmOutPolBlock", XFRM_MIB_OUTPOLBLOCK),
+ SNMP_MIB_ITEM("XfrmOutPolError", XFRM_MIB_OUTPOLERROR),
+ SNMP_MIB_SENTINEL
+};
+
+static unsigned long
+fold_field(void *mib[], int offt)
+{
+ unsigned long res = 0;
+ int i;
+
+ for_each_possible_cpu(i) {
+ res += *(((unsigned long *)per_cpu_ptr(mib[0], i)) + offt);
+ res += *(((unsigned long *)per_cpu_ptr(mib[1], i)) + offt);
+ }
+ return res;
+}
+
+static int xfrm_statistics_seq_show(struct seq_file *seq, void *v)
+{
+ int i;
+ for (i=0; xfrm_mib_list[i].name; i++)
+ seq_printf(seq, "%-24s\t%lu\n", xfrm_mib_list[i].name,
+ fold_field((void **)xfrm_statistics,
+ xfrm_mib_list[i].entry));
+ return 0;
+}
+
+static int xfrm_statistics_seq_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, xfrm_statistics_seq_show, NULL);
+}
+
+static struct file_operations xfrm_statistics_seq_fops = {
+ .owner = THIS_MODULE,
+ .open = xfrm_statistics_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+int __init xfrm_proc_init(void)
+{
+ int rc = 0;
+
+ if (!proc_net_fops_create(&init_net, "xfrm_stat", S_IRUGO,
+ &xfrm_statistics_seq_fops))
+ goto stat_fail;
+
+ out:
+ return rc;
+
+ stat_fail:
+ rc = -ENOMEM;
+ goto out;
+}
--
1.4.4.2
-
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