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https://github.com/ipxe/ipxe
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[tcpip] Add IP statistics collection as per RFC 4293
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
@@ -27,6 +27,8 @@ struct fragment {
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size_t hdrlen;
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/** Reassembly timer */
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struct retry_timer timer;
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/** Fragment reassembler */
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struct fragment_reassembler *fragments;
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};
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/** A fragment reassembler */
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@@ -59,6 +61,8 @@ struct fragment_reassembler {
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* @ret more_frags More fragments exist
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*/
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int ( * more_fragments ) ( struct io_buffer *iobuf, size_t hdrlen );
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/** Associated IP statistics */
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struct ip_statistics *stats;
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};
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extern struct io_buffer *
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187
src/include/ipxe/ipstat.h
Normal file
187
src/include/ipxe/ipstat.h
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@@ -0,0 +1,187 @@
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#ifndef _IPXE_IPSTATS_H
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#define _IPXE_IPSTATS_H
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/** @file
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*
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* IP statistics
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <ipxe/tables.h>
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struct io_buffer;
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/** IP system statistics
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*
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* Definitions are taken from the RFC4293 section 5
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* "ipSystemStatsEntry" table.
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*
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* To minimise code size, we use "unsigned long" as the counter
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* variable type regardless of whether this type is 32-bit or 64-bit.
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* On a 32-bit build (e.g. the standard BIOS build), this means that
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* we omit the "high capacity" 64-bit counters (prefixed with "HC").
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* This reduces the code size required to maintain the counter values,
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* and avoids the need to support the "%lld" format in vsprintf.c
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* (which would require dragging in the 64-bit division library on a
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* standard 32-bit build). Since total available memory in a 32-bit
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* environment is limited to 4GB, it is unlikely that we will overflow
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* even the 32-bit octet counters under normal operation.
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*
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* Counters relating to packet forwarding are omitted, since iPXE
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* includes no functionality for acting as a router.
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*
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* Counters related to output fragmentation are omitted, since iPXE
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* has no support for fragmenting transmitted packets.
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*
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* The ipSystemStatsInDiscards and ipSystemStatsOutDiscards counters
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* are omitted, since they will always be zero.
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*
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* Separate octet counters for multicast packets are omitted to save
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* code size.
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*/
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struct ip_statistics {
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/** ipSystemStatsInReceives
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*
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* The total number of input IP datagrams received, including
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* those received in error.
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*/
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unsigned long in_receives;
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/** ipSystemStatsInOctets
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*
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* The total number of octets received in input IP datagrams,
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* including those received in error. Octets from datagrams
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* counted in ipSystemStatsInReceives MUST be counted here.
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*/
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unsigned long in_octets;
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/** ipSystemStatsInHdrErrors
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*
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* The number of input IP datagrams discarded due to errors in
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* their IP headers, including version number mismatch, other
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* format errors, hop count exceeded, errors discovered in
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* processing their IP options, etc.
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*/
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unsigned long in_hdr_errors;
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/** ipSystemStatsInAddrErrors
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*
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* The number of input IP datagrams discarded because the IP
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* address in their IP header's destination field was not a
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* valid address to be received at this entity. This count
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* includes invalid addresses (e.g., ::0). For entities that
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* are not IP routers and therefore do not forward datagrams,
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* this counter includes datagrams discarded because the
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* destination address was not a local address.
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*/
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unsigned long in_addr_errors;
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/** ipSystemStatsInUnknownProtos
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*
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* The number of locally-addressed IP datagrams received
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* successfully but discarded because of an unknown or
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* unsupported protocol.
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*/
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unsigned long in_unknown_protos;
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/** ipSystemStatsInTruncatedPkts
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*
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* The number of input IP datagrams discarded because the
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* datagram frame didn't carry enough data.
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*/
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unsigned long in_truncated_pkts;
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/** ipSystemStatsReasmReqds
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*
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* The number of IP fragments received that needed to be
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* reassembled at this interface.
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*/
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unsigned long reasm_reqds;
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/** ipSystemStatsReasmOks
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*
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* The number of IP datagrams successfully reassembled.
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*/
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unsigned long reasm_oks;
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/** ipSystemStatsReasmFails
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*
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* The number of failures detected by the IP re-assembly
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* algorithm (for whatever reason: timed out, errors, etc.).
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* Note that this is not necessarily a count of discarded IP
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* fragments since some algorithms (notably the algorithm in
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* RFC 815) can lose track of the number of fragments by
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* combining them as they are received.
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*/
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unsigned long reasm_fails;
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/** ipSystemStatsInDelivers
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*
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* The total number of datagrams successfully delivered to IP
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* user-protocols (including ICMP).
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*/
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unsigned long in_delivers;
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/** ipSystemStatsOutRequests
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*
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* The total number of IP datagrams that local IP user-
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* protocols (including ICMP) supplied to IP in requests for
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* transmission.
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*/
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unsigned long out_requests;
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/** ipSystemStatsOutNoRoutes
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*
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* The number of locally generated IP datagrams discarded
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* because no route could be found to transmit them to their
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* destination.
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*/
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unsigned long out_no_routes;
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/** ipSystemStatsOutTransmits
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*
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* The total number of IP datagrams that this entity supplied
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* to the lower layers for transmission. This includes
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* datagrams generated locally and those forwarded by this
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* entity.
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*/
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unsigned long out_transmits;
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/** ipSystemStatsOutOctets
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*
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* The total number of octets in IP datagrams delivered to the
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* lower layers for transmission. Octets from datagrams
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* counted in ipSystemStatsOutTransmits MUST be counted here.
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*/
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unsigned long out_octets;
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/** ipSystemStatsInMcastPkts
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*
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* The number of IP multicast datagrams received.
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*/
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unsigned long in_mcast_pkts;
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/** ipSystemStatsOutMcastPkts
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*
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* The number of IP multicast datagrams transmitted.
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*/
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unsigned long out_mcast_pkts;
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/** ipSystemStatsInBcastPkts
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*
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* The number of IP broadcast datagrams received.
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*/
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unsigned long in_bcast_pkts;
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/** ipSystemStatsOutBcastPkts
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*
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* The number of IP broadcast datagrams transmitted.
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*/
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unsigned long out_bcast_pkts;
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};
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/** An IP system statistics family */
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struct ip_statistics_family {
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/** IP version */
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unsigned int version;
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/** Statistics */
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struct ip_statistics *stats;
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};
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/** IP system statistics family table */
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#define IP_STATISTICS_FAMILIES \
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__table ( struct ip_statistics_family, "ip_statistics_families" )
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/** Declare an IP system statistics family */
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#define __ip_statistics_family( order ) \
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__table_entry ( IP_STATISTICS_FAMILIES, order )
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#define IP_STATISTICS_IPV4 01
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#define IP_STATISTICS_IPV6 02
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#endif /* _IPXE_IPSTATS_H */
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@@ -17,6 +17,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
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struct io_buffer;
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struct net_device;
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struct ip_statistics;
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/** Empty checksum value
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*
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@@ -132,7 +133,8 @@ struct tcpip_net_protocol {
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extern int tcpip_rx ( struct io_buffer *iobuf, struct net_device *netdev,
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uint8_t tcpip_proto, struct sockaddr_tcpip *st_src,
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struct sockaddr_tcpip *st_dest, uint16_t pshdr_csum );
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struct sockaddr_tcpip *st_dest, uint16_t pshdr_csum,
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struct ip_statistics *stats );
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extern int tcpip_tx ( struct io_buffer *iobuf, struct tcpip_protocol *tcpip,
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struct sockaddr_tcpip *st_src,
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struct sockaddr_tcpip *st_dest,
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