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[XFRM]: Define packet dropping statistics.

Browse source 
This statistics is shown factor dropped by transformation
at /proc/net/xfrm_stat for developer.
It is a counter designed from current transformation source code
and defined as linux private MIB.

See Documentation/networking/xfrm_proc.txt for the detail.

Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Masahide NAKAMURA 2007-12-20 20:42:57 -08:00 • committed by David S. Miller
commit 558f82ef6e
7 changed files with 246 additions and 0 deletions
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31
include/linux/snmp.h
View file

@ -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 */

5
include/net/snmp.h
View file

@ -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

18
include/net/xfrm.h
View file

@ -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,