[XFRM]: Define packet dropping statistics. (558f82ef) · Commits · e / devices / android_kernel_oneplus_sm8150

Documentation/networking/xfrm_proc.txt

0 → 100644

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		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

include/linux/snmp.h

+31 −0

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		@@ -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 */

include/net/snmp.h

+5 −0

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		@@ -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

include/net/xfrm.h

+18 −0

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		@@ -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,

net/xfrm/Makefile

+1 −0

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		@@ -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