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-rw-r--r--Documentation/networking/xfrm_proc.txt71
-rw-r--r--include/linux/snmp.h31
-rw-r--r--include/net/snmp.h5
-rw-r--r--include/net/xfrm.h18
-rw-r--r--net/xfrm/Makefile1
-rw-r--r--net/xfrm/xfrm_policy.c24
-rw-r--r--net/xfrm/xfrm_proc.c96
7 files changed, 246 insertions, 0 deletions
diff --git a/Documentation/networking/xfrm_proc.txt b/Documentation/networking/xfrm_proc.txt
new file mode 100644
index 00000000000..ec9045b5c34
--- /dev/null
+++ b/Documentation/networking/xfrm_proc.txt
@@ -0,0 +1,71 @@
+XFRM proc - /proc/net/xfrm_* files
+==================================
+Masahide NAKAMURA <nakam@linux-ipv6.org>
+
+
+Transformation Statistics
+-------------------------
+xfrm_proc is a statistics shown factor dropped by transformation
+for developer.
+It is a counter designed from current transformation source code
+and defined like linux private MIB.
+
+Inbound statistics
+~~~~~~~~~~~~~~~~~~
+XfrmInError:
+ All errors which is not matched others
+XfrmInBufferError:
+ No buffer is left
+XfrmInHdrError:
+ Header error
+XfrmInNoStates:
+ No state is found
+ i.e. Either inbound SPI, address, or IPsec protocol at SA is wrong
+XfrmInStateProtoError:
+ Transformation protocol specific error
+ e.g. SA key is wrong
+XfrmInStateModeError:
+ Transformation mode specific error
+XfrmInSeqOutOfWindow:
+ Sequence out of window
+XfrmInStateExpired:
+ State is expired
+XfrmInStateMismatch:
+ State has mismatch option
+ e.g. UDP encapsulation type is mismatch
+XfrmInStateInvalid:
+ State is invalid
+XfrmInTmplMismatch:
+ No matching template for states
+ e.g. Inbound SAs are correct but SP rule is wrong
+XfrmInNoPols:
+ No policy is found for states
+ e.g. Inbound SAs are correct but no SP is found
+XfrmInPolBlock:
+ Policy discards
+XfrmInPolError:
+ Policy error
+
+Outbound errors
+~~~~~~~~~~~~~~~
+XfrmOutError:
+ All errors which is not matched others
+XfrmOutBundleGenError:
+ Bundle generation error
+XfrmOutBundleCheckError:
+ Bundle check error
+XfrmOutNoStates:
+ No state is found
+XfrmOutStateProtoError:
+ Transformation protocol specific error
+XfrmOutStateModeError:
+ Transformation mode specific error
+ e.g. Outer header space is not enough
+XfrmOutStateExpired:
+ State is expired
+XfrmOutPolBlock:
+ Policy discards
+XfrmOutPolDead:
+ Policy is dead
+XfrmOutPolError:
+ Policy error
diff --git a/include/linux/snmp.h b/include/linux/snmp.h
index 89f0c2b5f40..86d3effb283 100644
--- a/include/linux/snmp.h
+++ b/include/linux/snmp.h
@@ -217,4 +217,35 @@ enum
__LINUX_MIB_MAX
};
+/* linux Xfrm mib definitions */
+enum
+{
+ LINUX_MIB_XFRMNUM = 0,
+ LINUX_MIB_XFRMINERROR, /* XfrmInError */
+ LINUX_MIB_XFRMINBUFFERERROR, /* XfrmInBufferError */
+ LINUX_MIB_XFRMINHDRERROR, /* XfrmInHdrError */
+ LINUX_MIB_XFRMINNOSTATES, /* XfrmInNoStates */
+ LINUX_MIB_XFRMINSTATEPROTOERROR, /* XfrmInStateProtoError */
+ LINUX_MIB_XFRMINSTATEMODEERROR, /* XfrmInStateModeError */
+ LINUX_MIB_XFRMINSEQOUTOFWINDOW, /* XfrmInSeqOutOfWindow */
+ LINUX_MIB_XFRMINSTATEEXPIRED, /* XfrmInStateExpired */
+ LINUX_MIB_XFRMINSTATEMISMATCH, /* XfrmInStateMismatch */
+ LINUX_MIB_XFRMINSTATEINVALID, /* XfrmInStateInvalid */
+ LINUX_MIB_XFRMINTMPLMISMATCH, /* XfrmInTmplMismatch */
+ LINUX_MIB_XFRMINNOPOLS, /* XfrmInNoPols */
+ LINUX_MIB_XFRMINPOLBLOCK, /* XfrmInPolBlock */
+ LINUX_MIB_XFRMINPOLERROR, /* XfrmInPolError */
+ LINUX_MIB_XFRMOUTERROR, /* XfrmOutError */
+ LINUX_MIB_XFRMOUTBUNDLEGENERROR, /* XfrmOutBundleGenError */
+ LINUX_MIB_XFRMOUTBUNDLECHECKERROR, /* XfrmOutBundleCheckError */
+ LINUX_MIB_XFRMOUTNOSTATES, /* XfrmOutNoStates */
+ LINUX_MIB_XFRMOUTSTATEPROTOERROR, /* XfrmOutStateProtoError */
+ LINUX_MIB_XFRMOUTSTATEMODEERROR, /* XfrmOutStateModeError */
+ LINUX_MIB_XFRMOUTSTATEEXPIRED, /* XfrmOutStateExpired */
+ LINUX_MIB_XFRMOUTPOLBLOCK, /* XfrmOutPolBlock */
+ LINUX_MIB_XFRMOUTPOLDEAD, /* XfrmOutPolDead */
+ LINUX_MIB_XFRMOUTPOLERROR, /* XfrmOutPolError */
+ __LINUX_MIB_XFRMMAX
+};
+
#endif /* _LINUX_SNMP_H */
diff --git a/include/net/snmp.h b/include/net/snmp.h
index fbb66663a42..ce2f4850751 100644
--- a/include/net/snmp.h
+++ b/include/net/snmp.h
@@ -118,6 +118,11 @@ struct linux_mib {
unsigned long mibs[LINUX_MIB_MAX];
};
+/* Linux Xfrm */
+#define LINUX_MIB_XFRMMAX __LINUX_MIB_XFRMMAX
+struct linux_xfrm_mib {
+ unsigned long mibs[LINUX_MIB_XFRMMAX];
+};
/*
* 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 eea1c327c93..a79702bcdcd 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 linux_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;
@@ -1139,6 +1153,10 @@ static inline void xfrm6_fini(void)
}
#endif
+#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);
extern struct xfrm_state *xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
diff --git a/net/xfrm/Makefile b/net/xfrm/Makefile
index 45744a3d3a5..332cfb0ff56 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 521cb6e1256..32ddb7b12e7 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -27,11 +27,19 @@
#include <net/dst.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 linux_xfrm_mib, xfrm_statistics) __read_mostly;
+EXPORT_SYMBOL(xfrm_statistics);
+#endif
+
DEFINE_MUTEX(xfrm_cfg_mutex);
EXPORT_SYMBOL(xfrm_cfg_mutex);
@@ -2258,6 +2266,16 @@ static struct notifier_block xfrm_dev_notifier = {
0
};
+#ifdef CONFIG_XFRM_STATISTICS
+static int __init xfrm_statistics_init(void)
+{
+ if (snmp_mib_init((void **)xfrm_statistics,
+ sizeof(struct linux_xfrm_mib)) < 0)
+ return -ENOMEM;
+ return 0;
+}
+#endif
+
static void __init xfrm_policy_init(void)
{
unsigned int hmask, sz;
@@ -2294,9 +2312,15 @@ 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 00000000000..31d035415ec
--- /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@linux-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/snmp.h>
+#include <net/xfrm.h>
+
+static struct snmp_mib xfrm_mib_list[] = {
+ SNMP_MIB_ITEM("XfrmInError", LINUX_MIB_XFRMINERROR),
+ SNMP_MIB_ITEM("XfrmInBufferError", LINUX_MIB_XFRMINBUFFERERROR),
+ SNMP_MIB_ITEM("XfrmInHdrError", LINUX_MIB_XFRMINHDRERROR),
+ SNMP_MIB_ITEM("XfrmInNoStates", LINUX_MIB_XFRMINNOSTATES),
+ SNMP_MIB_ITEM("XfrmInStateProtoError", LINUX_MIB_XFRMINSTATEPROTOERROR),
+ SNMP_MIB_ITEM("XfrmInStateModeError", LINUX_MIB_XFRMINSTATEMODEERROR),
+ SNMP_MIB_ITEM("XfrmInSeqOutOfWindow", LINUX_MIB_XFRMINSEQOUTOFWINDOW),
+ SNMP_MIB_ITEM("XfrmInStateExpired", LINUX_MIB_XFRMINSTATEEXPIRED),
+ SNMP_MIB_ITEM("XfrmInStateMismatch", LINUX_MIB_XFRMINSTATEMISMATCH),
+ SNMP_MIB_ITEM("XfrmInStateInvalid", LINUX_MIB_XFRMINSTATEINVALID),
+ SNMP_MIB_ITEM("XfrmInTmplMismatch", LINUX_MIB_XFRMINTMPLMISMATCH),
+ SNMP_MIB_ITEM("XfrmInNoPols", LINUX_MIB_XFRMINNOPOLS),
+ SNMP_MIB_ITEM("XfrmInPolBlock", LINUX_MIB_XFRMINPOLBLOCK),
+ SNMP_MIB_ITEM("XfrmInPolError", LINUX_MIB_XFRMINPOLERROR),
+ SNMP_MIB_ITEM("XfrmOutError", LINUX_MIB_XFRMOUTERROR),
+ SNMP_MIB_ITEM("XfrmOutBundleGenError", LINUX_MIB_XFRMOUTBUNDLEGENERROR),
+ SNMP_MIB_ITEM("XfrmOutBundleCheckError", LINUX_MIB_XFRMOUTBUNDLECHECKERROR),
+ SNMP_MIB_ITEM("XfrmOutNoStates", LINUX_MIB_XFRMOUTNOSTATES),
+ SNMP_MIB_ITEM("XfrmOutStateProtoError", LINUX_MIB_XFRMOUTSTATEPROTOERROR),
+ SNMP_MIB_ITEM("XfrmOutStateModeError", LINUX_MIB_XFRMOUTSTATEMODEERROR),
+ SNMP_MIB_ITEM("XfrmOutStateExpired", LINUX_MIB_XFRMOUTSTATEEXPIRED),
+ SNMP_MIB_ITEM("XfrmOutPolBlock", LINUX_MIB_XFRMOUTPOLBLOCK),
+ SNMP_MIB_ITEM("XfrmOutPolDead", LINUX_MIB_XFRMOUTPOLDEAD),
+ SNMP_MIB_ITEM("XfrmOutPolError", LINUX_MIB_XFRMOUTPOLERROR),
+ 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;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 05:55:11 +0000