inet6.c

00001 /*
00002  * lib/route/link/inet6.c       AF_INET6 link operations
00003  *
00004  *      This library is free software; you can redistribute it and/or
00005  *      modify it under the terms of the GNU Lesser General Public
00006  *      License as published by the Free Software Foundation version 2.1
00007  *      of the License.
00008  *
00009  * Copyright (c) 2010 Thomas Graf <tgraf@suug.ch>
00010  */
00011 
00012 #include <netlink-local.h>
00013 #include <netlink/netlink.h>
00014 #include <netlink/attr.h>
00015 #include <netlink/route/rtnl.h>
00016 #include <netlink/route/link/api.h>
00017 
00018 struct inet6_data
00019 {
00020         uint32_t                i6_flags;
00021         struct ifla_cacheinfo   i6_cacheinfo;
00022         uint32_t                i6_conf[DEVCONF_MAX];
00023 };
00024 
00025 static void *inet6_alloc(struct rtnl_link *link)
00026 {
00027         return calloc(1, sizeof(struct inet6_data));
00028 }
00029 
00030 static void *inet6_clone(struct rtnl_link *link, void *data)
00031 {
00032         struct inet6_data *i6;
00033 
00034         if ((i6 = inet6_alloc(link)))
00035                 memcpy(i6, data, sizeof(*i6));
00036 
00037         return i6;
00038 }
00039 
00040 static void inet6_free(struct rtnl_link *link, void *data)
00041 {
00042         free(data);
00043 }
00044 
00045 static struct nla_policy inet6_policy[IFLA_INET6_MAX+1] = {
00046         [IFLA_INET6_FLAGS]      = { .type = NLA_U32 },
00047         [IFLA_INET6_CACHEINFO]  = { .minlen = sizeof(struct ifla_cacheinfo) },
00048         [IFLA_INET6_CONF]       = { .minlen = DEVCONF_MAX * 4 },
00049         [IFLA_INET6_STATS]      = { .minlen = __IPSTATS_MIB_MAX * 8 },
00050         [IFLA_INET6_ICMP6STATS] = { .minlen = __ICMP6_MIB_MAX * 8 },
00051 };
00052 
00053 static int inet6_parse_protinfo(struct rtnl_link *link, struct nlattr *attr,
00054                                 void *data)
00055 {
00056         struct inet6_data *i6 = data;
00057         struct nlattr *tb[IFLA_INET6_MAX+1];
00058         int err;
00059 
00060         err = nla_parse_nested(tb, IFLA_INET6_MAX, attr, inet6_policy);
00061         if (err < 0)
00062                 return err;
00063 
00064         if (tb[IFLA_INET6_FLAGS])
00065                 i6->i6_flags = nla_get_u32(tb[IFLA_INET6_FLAGS]);
00066 
00067         if (tb[IFLA_INET6_CACHEINFO])
00068                 nla_memcpy(&i6->i6_cacheinfo, tb[IFLA_INET6_CACHEINFO],
00069                            sizeof(i6->i6_cacheinfo));
00070 
00071         if (tb[IFLA_INET6_CONF])
00072                 nla_memcpy(&i6->i6_conf, tb[IFLA_INET6_CONF],
00073                            sizeof(i6->i6_conf));
00074 
00075         if (tb[IFLA_INET6_STATS]) {
00076                 uint64_t *cnt = nla_data(tb[IFLA_INET6_STATS]);
00077                 int i;
00078 
00079                 for (i = 1; i < __IPSTATS_MIB_MAX; i++)
00080                         rtnl_link_set_stat(link, RTNL_LINK_IP6_INPKTS + i - 1,
00081                                            cnt[i]);
00082         }
00083 
00084         if (tb[IFLA_INET6_ICMP6STATS]) {
00085                 uint64_t *cnt = nla_data(tb[IFLA_INET6_ICMP6STATS]);
00086                 int i;
00087 
00088                 for (i = 1; i < __ICMP6_MIB_MAX; i++)
00089                         rtnl_link_set_stat(link, RTNL_LINK_ICMP6_INMSGS + i - 1,
00090                                            cnt[i]);
00091         }
00092 
00093         return 0;
00094 }
00095 
00096 /* These live in include/net/if_inet6.h and should be moved to include/linux */
00097 #define IF_RA_OTHERCONF 0x80
00098 #define IF_RA_MANAGED   0x40
00099 #define IF_RA_RCVD      0x20
00100 #define IF_RS_SENT      0x10
00101 #define IF_READY        0x80000000
00102 
00103 static const struct trans_tbl inet6_flags[] = {
00104         __ADD(IF_RA_OTHERCONF, ra_otherconf)
00105         __ADD(IF_RA_MANAGED, ra_managed)
00106         __ADD(IF_RA_RCVD, ra_rcvd)
00107         __ADD(IF_RS_SENT, rs_sent)
00108         __ADD(IF_READY, ready)
00109 };
00110 
00111 static char *inet6_flags2str(int flags, char *buf, size_t len)
00112 {
00113         return __flags2str(flags, buf, len, inet6_flags,
00114                            ARRAY_SIZE(inet6_flags));
00115 }
00116 
00117 static const struct trans_tbl inet6_devconf[] = {
00118         __ADD(DEVCONF_FORWARDING, forwarding)
00119         __ADD(DEVCONF_HOPLIMIT, hoplimit)
00120         __ADD(DEVCONF_MTU6, mtu6)
00121         __ADD(DEVCONF_ACCEPT_RA, accept_ra)
00122         __ADD(DEVCONF_ACCEPT_REDIRECTS, accept_redirects)
00123         __ADD(DEVCONF_AUTOCONF, autoconf)
00124         __ADD(DEVCONF_DAD_TRANSMITS, dad_transmits)
00125         __ADD(DEVCONF_RTR_SOLICITS, rtr_solicits)
00126         __ADD(DEVCONF_RTR_SOLICIT_INTERVAL, rtr_solicit_interval)
00127         __ADD(DEVCONF_RTR_SOLICIT_DELAY, rtr_solicit_delay)
00128         __ADD(DEVCONF_USE_TEMPADDR, use_tempaddr)
00129         __ADD(DEVCONF_TEMP_VALID_LFT, temp_valid_lft)
00130         __ADD(DEVCONF_TEMP_PREFERED_LFT, temp_prefered_lft)
00131         __ADD(DEVCONF_REGEN_MAX_RETRY, regen_max_retry)
00132         __ADD(DEVCONF_MAX_DESYNC_FACTOR, max_desync_factor)
00133         __ADD(DEVCONF_MAX_ADDRESSES, max_addresses)
00134         __ADD(DEVCONF_FORCE_MLD_VERSION, force_mld_version)
00135         __ADD(DEVCONF_ACCEPT_RA_DEFRTR, accept_ra_defrtr)
00136         __ADD(DEVCONF_ACCEPT_RA_PINFO, accept_ra_pinfo)
00137         __ADD(DEVCONF_ACCEPT_RA_RTR_PREF, accept_ra_rtr_pref)
00138         __ADD(DEVCONF_RTR_PROBE_INTERVAL, rtr_probe_interval)
00139         __ADD(DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN, accept_ra_rt_info)
00140         __ADD(DEVCONF_PROXY_NDP, proxy_ndp)
00141         __ADD(DEVCONF_OPTIMISTIC_DAD, optimistic_dad)
00142         __ADD(DEVCONF_ACCEPT_SOURCE_ROUTE, accept_source_route)
00143         __ADD(DEVCONF_MC_FORWARDING, mc_forwarding)
00144         __ADD(DEVCONF_DISABLE_IPV6, disable_ipv6)
00145         __ADD(DEVCONF_ACCEPT_DAD, accept_dad)
00146         __ADD(DEVCONF_FORCE_TLLAO, force_tllao)
00147 };
00148 
00149 static char *inet6_devconf2str(int type, char *buf, size_t len)
00150 {
00151         return __type2str(type, buf, len, inet6_devconf,
00152                           ARRAY_SIZE(inet6_devconf));
00153 }
00154 
00155 
00156 static void inet6_dump_details(struct rtnl_link *link,
00157                                 struct nl_dump_params *p, void *data)
00158 {
00159         struct inet6_data *i6 = data;
00160         char buf[64], buf2[64];
00161         int i, n = 0;
00162 
00163         nl_dump_line(p, "    ipv6 max-reasm-len %s",
00164                 nl_size2str(i6->i6_cacheinfo.max_reasm_len, buf, sizeof(buf)));
00165 
00166         nl_dump(p, " <%s>\n",
00167                 inet6_flags2str(i6->i6_flags, buf, sizeof(buf)));
00168 
00169 
00170         nl_dump_line(p, "      create-stamp %.2fs reachable-time %s",
00171                 (double) i6->i6_cacheinfo.tstamp / 100.,
00172                 nl_msec2str(i6->i6_cacheinfo.reachable_time, buf, sizeof(buf)));
00173 
00174         nl_dump(p, " retrans-time %s\n",
00175                 nl_msec2str(i6->i6_cacheinfo.retrans_time, buf, sizeof(buf)));
00176 
00177         nl_dump_line(p, "      devconf:\n");
00178         nl_dump_line(p, "      ");
00179 
00180         for (i = 0; i < DEVCONF_MAX; i++) {
00181                 uint32_t value = i6->i6_conf[i];
00182                 int x, offset;
00183 
00184                 switch (i) {
00185                 case DEVCONF_TEMP_VALID_LFT:
00186                 case DEVCONF_TEMP_PREFERED_LFT:
00187                         nl_msec2str((uint64_t) value * 1000., buf2, sizeof(buf2));
00188                         break;
00189 
00190                 case DEVCONF_RTR_PROBE_INTERVAL:
00191                 case DEVCONF_RTR_SOLICIT_INTERVAL:
00192                 case DEVCONF_RTR_SOLICIT_DELAY:
00193                         nl_msec2str(value, buf2, sizeof(buf2));
00194                         break;
00195 
00196                 default:
00197                         snprintf(buf2, sizeof(buf2), "%u", value);
00198                         break;
00199                         
00200                 }
00201 
00202                 inet6_devconf2str(i, buf, sizeof(buf));
00203 
00204                 offset = 23 - strlen(buf2);
00205                 if (offset < 0)
00206                         offset = 0;
00207 
00208                 for (x = strlen(buf); x < offset; x++)
00209                         buf[x] = ' ';
00210 
00211                 strncpy(&buf[offset], buf2, strlen(buf2));
00212 
00213                 nl_dump_line(p, "%s", buf);
00214 
00215                 if (++n == 3) {
00216                         nl_dump(p, "\n");
00217                         nl_dump_line(p, "      ");
00218                         n = 0;
00219                 } else
00220                         nl_dump(p, "  ");
00221         }
00222 
00223         if (n != 0)
00224                 nl_dump(p, "\n");
00225 }
00226 
00227 static void inet6_dump_stats(struct rtnl_link *link,
00228                              struct nl_dump_params *p, void *data)
00229 {
00230         double octets;
00231         char *octetsUnit;
00232 
00233         nl_dump(p, "    IPv6:       InPkts           InOctets     "
00234                    "    InDiscards         InDelivers\n");
00235         nl_dump(p, "    %18llu ", link->l_stats[RTNL_LINK_IP6_INPKTS]);
00236 
00237         octets = nl_cancel_down_bytes(link->l_stats[RTNL_LINK_IP6_INOCTETS],
00238                                       &octetsUnit);
00239         if (octets)
00240                 nl_dump(p, "%14.2f %3s ", octets, octetsUnit);
00241         else
00242                 nl_dump(p, "%16llu B ", 0);
00243         
00244         nl_dump(p, "%18llu %18llu\n",
00245                 link->l_stats[RTNL_LINK_IP6_INDISCARDS],
00246                 link->l_stats[RTNL_LINK_IP6_INDELIVERS]);
00247 
00248         nl_dump(p, "               OutPkts          OutOctets     "
00249                    "   OutDiscards        OutForwards\n");
00250 
00251         nl_dump(p, "    %18llu ", link->l_stats[RTNL_LINK_IP6_OUTPKTS]);
00252 
00253         octets = nl_cancel_down_bytes(link->l_stats[RTNL_LINK_IP6_OUTOCTETS],
00254                                       &octetsUnit);
00255         if (octets)
00256                 nl_dump(p, "%14.2f %3s ", octets, octetsUnit);
00257         else
00258                 nl_dump(p, "%16llu B ", 0);
00259 
00260         nl_dump(p, "%18llu %18llu\n",
00261                 link->l_stats[RTNL_LINK_IP6_OUTDISCARDS],
00262                 link->l_stats[RTNL_LINK_IP6_OUTFORWDATAGRAMS]);
00263 
00264         nl_dump(p, "           InMcastPkts      InMcastOctets     "
00265                    "   InBcastPkts     InBcastOctests\n");
00266 
00267         nl_dump(p, "    %18llu ", link->l_stats[RTNL_LINK_IP6_INMCASTPKTS]);
00268 
00269         octets = nl_cancel_down_bytes(link->l_stats[RTNL_LINK_IP6_INMCASTOCTETS],
00270                                       &octetsUnit);
00271         if (octets)
00272                 nl_dump(p, "%14.2f %3s ", octets, octetsUnit);
00273         else
00274                 nl_dump(p, "%16llu B ", 0);
00275 
00276         nl_dump(p, "%18llu ", link->l_stats[RTNL_LINK_IP6_INBCASTPKTS]);
00277         octets = nl_cancel_down_bytes(link->l_stats[RTNL_LINK_IP6_INBCASTOCTETS],
00278                                       &octetsUnit);
00279         if (octets)
00280                 nl_dump(p, "%14.2f %3s\n", octets, octetsUnit);
00281         else
00282                 nl_dump(p, "%16llu B\n", 0);
00283 
00284         nl_dump(p, "          OutMcastPkts     OutMcastOctets     "
00285                    "  OutBcastPkts    OutBcastOctests\n");
00286 
00287         nl_dump(p, "    %18llu ", link->l_stats[RTNL_LINK_IP6_OUTMCASTPKTS]);
00288 
00289         octets = nl_cancel_down_bytes(link->l_stats[RTNL_LINK_IP6_OUTMCASTOCTETS],
00290                                       &octetsUnit);
00291         if (octets)
00292                 nl_dump(p, "%14.2f %3s ", octets, octetsUnit);
00293         else
00294                 nl_dump(p, "%16llu B ", 0);
00295 
00296         nl_dump(p, "%18llu ", link->l_stats[RTNL_LINK_IP6_OUTBCASTPKTS]);
00297         octets = nl_cancel_down_bytes(link->l_stats[RTNL_LINK_IP6_OUTBCASTOCTETS],
00298                                       &octetsUnit);
00299         if (octets)
00300                 nl_dump(p, "%14.2f %3s\n", octets, octetsUnit);
00301         else
00302                 nl_dump(p, "%16llu B\n", 0);
00303 
00304         nl_dump(p, "              ReasmOKs         ReasmFails     "
00305                    "    ReasmReqds       ReasmTimeout\n");
00306         nl_dump(p, "    %18llu %18llu %18llu %18llu\n",
00307                 link->l_stats[RTNL_LINK_IP6_REASMOKS],
00308                 link->l_stats[RTNL_LINK_IP6_REASMFAILS],
00309                 link->l_stats[RTNL_LINK_IP6_REASMREQDS],
00310                 link->l_stats[RTNL_LINK_IP6_REASMTIMEOUT]);
00311 
00312         nl_dump(p, "               FragOKs          FragFails    "
00313                    "    FragCreates\n");
00314         nl_dump(p, "    %18llu %18llu %18llu\n",
00315                 link->l_stats[RTNL_LINK_IP6_FRAGOKS],
00316                 link->l_stats[RTNL_LINK_IP6_FRAGFAILS],
00317                 link->l_stats[RTNL_LINK_IP6_FRAGCREATES]);
00318 
00319         nl_dump(p, "           InHdrErrors      InTooBigErrors   "
00320                    "     InNoRoutes       InAddrErrors\n");
00321         nl_dump(p, "    %18llu %18llu %18llu %18llu\n",
00322                 link->l_stats[RTNL_LINK_IP6_INHDRERRORS],
00323                 link->l_stats[RTNL_LINK_IP6_INTOOBIGERRORS],
00324                 link->l_stats[RTNL_LINK_IP6_INNOROUTES],
00325                 link->l_stats[RTNL_LINK_IP6_INADDRERRORS]);
00326 
00327         nl_dump(p, "       InUnknownProtos     InTruncatedPkts   "
00328                    "    OutNoRoutes\n");
00329         nl_dump(p, "    %18llu %18llu %18llu\n",
00330                 link->l_stats[RTNL_LINK_IP6_INUNKNOWNPROTOS],
00331                 link->l_stats[RTNL_LINK_IP6_INTRUNCATEDPKTS],
00332                 link->l_stats[RTNL_LINK_IP6_OUTNOROUTES]);
00333 
00334         nl_dump(p, "    ICMPv6:     InMsgs           InErrors        "
00335                    "    OutMsgs          OutErrors\n");
00336         nl_dump(p, "    %18llu %18llu %18llu %18llu\n",
00337                 link->l_stats[RTNL_LINK_ICMP6_INMSGS],
00338                 link->l_stats[RTNL_LINK_ICMP6_INERRORS],
00339                 link->l_stats[RTNL_LINK_ICMP6_OUTMSGS],
00340                 link->l_stats[RTNL_LINK_ICMP6_OUTERRORS]);
00341 }
00342 
00343 static const struct nla_policy protinfo_policy = {
00344         .type                   = NLA_NESTED,
00345 };
00346 
00347 static struct rtnl_link_af_ops inet6_ops = {
00348         .ao_family                      = AF_INET6,
00349         .ao_alloc                       = &inet6_alloc,
00350         .ao_clone                       = &inet6_clone,
00351         .ao_free                        = &inet6_free,
00352         .ao_parse_protinfo              = &inet6_parse_protinfo,
00353         .ao_parse_af                    = &inet6_parse_protinfo,
00354         .ao_dump[NL_DUMP_DETAILS]       = &inet6_dump_details,
00355         .ao_dump[NL_DUMP_STATS]         = &inet6_dump_stats,
00356         .ao_protinfo_policy             = &protinfo_policy,
00357 };
00358 
00359 static void __init inet6_init(void)
00360 {
00361         rtnl_link_af_register(&inet6_ops);
00362 }
00363 
00364 static void __exit inet6_exit(void)
00365 {
00366         rtnl_link_af_unregister(&inet6_ops);
00367 }