Date: Sat, 5 Dec 2009 19:21:58 +0000 (UTC) From: "Bjoern A. Zeeb" <bz@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r200148 - in stable/8: sys/netipsec usr.bin/netstat Message-ID: <200912051921.nB5JLwbx097156@svn.freebsd.org>
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Author: bz Date: Sat Dec 5 19:21:58 2009 New Revision: 200148 URL: http://svn.freebsd.org/changeset/base/200148 Log: MFC r199946: Add more statistics variables for IPcomp. Try to version the struct in a backward compatible way. People asked for the versioning of the stats structs in general before. Note: old netstat binaries, as only consumer, continue to work as they are still using kvm but will not display the new stats. [1] Discussed with: rwatson [1] Modified: stable/8/sys/netipsec/ipcomp_var.h stable/8/sys/netipsec/xform_ipcomp.c stable/8/usr.bin/netstat/ipsec.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/dev/xen/xenpci/ (props changed) stable/8/usr.bin/netstat/ (props changed) Modified: stable/8/sys/netipsec/ipcomp_var.h ============================================================================== --- stable/8/sys/netipsec/ipcomp_var.h Sat Dec 5 19:12:35 2009 (r200147) +++ stable/8/sys/netipsec/ipcomp_var.h Sat Dec 5 19:21:58 2009 (r200148) @@ -41,6 +41,7 @@ */ #define IPCOMP_ALG_MAX 8 +#define IPCOMPSTAT_VERSION 1 struct ipcompstat { u_int32_t ipcomps_hdrops; /* Packet shorter than header shows */ u_int32_t ipcomps_nopf; /* Protocol family not supported */ @@ -58,6 +59,9 @@ struct ipcompstat { u_int32_t ipcomps_pdrops; /* Packet blocked due to policy */ u_int32_t ipcomps_crypto; /* "Crypto" processing failure */ u_int32_t ipcomps_hist[IPCOMP_ALG_MAX];/* Per-algorithm op count */ + u_int32_t version; /* Version of this structure. */ + u_int32_t ipcomps_threshold; /* Packet < comp. algo. threshold. */ + u_int32_t ipcomps_uncompr; /* Compression was useles. */ }; #ifdef _KERNEL Modified: stable/8/sys/netipsec/xform_ipcomp.c ============================================================================== --- stable/8/sys/netipsec/xform_ipcomp.c Sat Dec 5 19:12:35 2009 (r200147) +++ stable/8/sys/netipsec/xform_ipcomp.c Sat Dec 5 19:21:58 2009 (r200148) @@ -345,7 +345,7 @@ ipcomp_output( * See RFC 3173, 2.2. Non-Expansion Policy. */ if (m->m_pkthdr.len <= ipcompx->minlen) { - /* XXX-BZ V_ipcompstat.threshold++; */ + V_ipcompstat.ipcomps_threshold++; return ipsec_process_done(m, isr); } @@ -569,8 +569,10 @@ ipcomp_output_cb(struct cryptop *crp) goto bad; } } else { - /* compression was useless, we have lost time */ - /* XXX add statistic */ + /* Compression was useless, we have lost time. */ + V_ipcompstat.ipcomps_uncompr++; + DPRINTF(("%s: compressions was useless %d - %d <= %d\n", + __func__, crp->crp_ilen, skip, crp->crp_olen)); /* XXX remember state to not compress the next couple * of packets, RFC 3173, 2.2. Non-Expansion Policy */ } @@ -609,3 +611,13 @@ ipcomp_attach(void) } SYSINIT(ipcomp_xform_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_MIDDLE, ipcomp_attach, NULL); + +static void +vnet_ipcomp_attach(const void *unused __unused) +{ + + V_ipcompstat.version = IPCOMPSTAT_VERSION; +} + +VNET_SYSINIT(vnet_ipcomp_xform_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_MIDDLE, + vnet_ipcomp_attach, NULL); Modified: stable/8/usr.bin/netstat/ipsec.c ============================================================================== --- stable/8/usr.bin/netstat/ipsec.c Sat Dec 5 19:12:35 2009 (r200147) +++ stable/8/usr.bin/netstat/ipsec.c Sat Dec 5 19:21:58 2009 (r200148) @@ -418,6 +418,7 @@ esp_stats(u_long off, const char *name, static void print_ipcompstats(const struct ipcompstat *ipcompstat) { + uint32_t version; #define p32(f, m) if (ipcompstat->f || sflag <= 1) \ printf("\t%u" m, (unsigned int)ipcompstat->f, plural(ipcompstat->f)) #define p64(f, m) if (ipcompstat->f || sflag <= 1) \ @@ -425,6 +426,11 @@ print_ipcompstats(const struct ipcompsta #define hist(f, n, t) \ ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t)); +#ifndef IPCOMPSTAT_VERSION + version = 0; +#else + version = ipcompstat->version; +#endif p32(ipcomps_hdrops, " packet%s shorter than header shows\n"); p32(ipcomps_nopf, " packet%s dropped; protocol family not supported\n"); p32(ipcomps_notdb, " packet%s dropped; no TDB\n"); @@ -441,6 +447,10 @@ print_ipcompstats(const struct ipcompsta p32(ipcomps_pdrops, " packet%s blocked due to policy\n"); p32(ipcomps_crypto, " crypto processing failure%s\n"); hist(ipcompstat->ipcomps_hist, ipsec_compnames, "COMP output"); + if (version >= 1) { + p32(ipcomps_threshold, " packet%s sent uncompressed; size < compr. algo. threshold\n"); + p32(ipcomps_uncompr, " packet%s sent uncompressed; compression was useless\n"); + } #undef p32 #undef p64
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