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#ifndef _IPXE_IPSTATS_H
#define _IPXE_IPSTATS_H
/** @file
*
* IP statistics
*
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <ipxe/tables.h>
struct io_buffer;
/** IP system statistics
*
* Definitions are taken from the RFC4293 section 5
* "ipSystemStatsEntry" table.
*
* To minimise code size, we use "unsigned long" as the counter
* variable type regardless of whether this type is 32-bit or 64-bit.
* On a 32-bit build (e.g. the standard BIOS build), this means that
* we omit the "high capacity" 64-bit counters (prefixed with "HC").
* This reduces the code size required to maintain the counter values,
* and avoids the need to support the "%lld" format in vsprintf.c
* (which would require dragging in the 64-bit division library on a
* standard 32-bit build). Since total available memory in a 32-bit
* environment is limited to 4GB, it is unlikely that we will overflow
* even the 32-bit octet counters under normal operation.
*
* Counters relating to packet forwarding are omitted, since iPXE
* includes no functionality for acting as a router.
*
* Counters related to output fragmentation are omitted, since iPXE
* has no support for fragmenting transmitted packets.
*
* The ipSystemStatsInDiscards and ipSystemStatsOutDiscards counters
* are omitted, since they will always be zero.
*
* Separate octet counters for multicast packets are omitted to save
* code size.
*/
struct ip_statistics {
/** ipSystemStatsInReceives
*
* The total number of input IP datagrams received, including
* those received in error.
*/
unsigned long in_receives;
/** ipSystemStatsInOctets
*
* The total number of octets received in input IP datagrams,
* including those received in error. Octets from datagrams
* counted in ipSystemStatsInReceives MUST be counted here.
*/
unsigned long in_octets;
/** ipSystemStatsInHdrErrors
*
* The number of input IP datagrams discarded due to errors in
* their IP headers, including version number mismatch, other
* format errors, hop count exceeded, errors discovered in
* processing their IP options, etc.
*/
unsigned long in_hdr_errors;
/** ipSystemStatsInAddrErrors
*
* The number of input IP datagrams discarded because the IP
* address in their IP header's destination field was not a
* valid address to be received at this entity. This count
* includes invalid addresses (e.g., ::0). For entities that
* are not IP routers and therefore do not forward datagrams,
* this counter includes datagrams discarded because the
* destination address was not a local address.
*/
unsigned long in_addr_errors;
/** ipSystemStatsInUnknownProtos
*
* The number of locally-addressed IP datagrams received
* successfully but discarded because of an unknown or
* unsupported protocol.
*/
unsigned long in_unknown_protos;
/** ipSystemStatsInTruncatedPkts
*
* The number of input IP datagrams discarded because the
* datagram frame didn't carry enough data.
*/
unsigned long in_truncated_pkts;
/** ipSystemStatsReasmReqds
*
* The number of IP fragments received that needed to be
* reassembled at this interface.
*/
unsigned long reasm_reqds;
/** ipSystemStatsReasmOks
*
* The number of IP datagrams successfully reassembled.
*/
unsigned long reasm_oks;
/** ipSystemStatsReasmFails
*
* The number of failures detected by the IP re-assembly
* algorithm (for whatever reason: timed out, errors, etc.).
* Note that this is not necessarily a count of discarded IP
* fragments since some algorithms (notably the algorithm in
* RFC 815) can lose track of the number of fragments by
* combining them as they are received.
*/
unsigned long reasm_fails;
/** ipSystemStatsInDelivers
*
* The total number of datagrams successfully delivered to IP
* user-protocols (including ICMP).
*/
unsigned long in_delivers;
/** ipSystemStatsOutRequests
*
* The total number of IP datagrams that local IP user-
* protocols (including ICMP) supplied to IP in requests for
* transmission.
*/
unsigned long out_requests;
/** ipSystemStatsOutNoRoutes
*
* The number of locally generated IP datagrams discarded
* because no route could be found to transmit them to their
* destination.
*/
unsigned long out_no_routes;
/** ipSystemStatsOutTransmits
*
* The total number of IP datagrams that this entity supplied
* to the lower layers for transmission. This includes
* datagrams generated locally and those forwarded by this
* entity.
*/
unsigned long out_transmits;
/** ipSystemStatsOutOctets
*
* The total number of octets in IP datagrams delivered to the
* lower layers for transmission. Octets from datagrams
* counted in ipSystemStatsOutTransmits MUST be counted here.
*/
unsigned long out_octets;
/** ipSystemStatsInMcastPkts
*
* The number of IP multicast datagrams received.
*/
unsigned long in_mcast_pkts;
/** ipSystemStatsOutMcastPkts
*
* The number of IP multicast datagrams transmitted.
*/
unsigned long out_mcast_pkts;
/** ipSystemStatsInBcastPkts
*
* The number of IP broadcast datagrams received.
*/
unsigned long in_bcast_pkts;
/** ipSystemStatsOutBcastPkts
*
* The number of IP broadcast datagrams transmitted.
*/
unsigned long out_bcast_pkts;
};
/** An IP system statistics family */
struct ip_statistics_family {
/** IP version */
unsigned int version;
/** Statistics */
struct ip_statistics *stats;
};
/** IP system statistics family table */
#define IP_STATISTICS_FAMILIES \
__table ( struct ip_statistics_family, "ip_statistics_families" )
/** Declare an IP system statistics family */
#define __ip_statistics_family( order ) \
__table_entry ( IP_STATISTICS_FAMILIES, order )
#define IP_STATISTICS_IPV4 01
#define IP_STATISTICS_IPV6 02
#endif /* _IPXE_IPSTATS_H */
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